TY - JOUR AU - Liu, Z. AU - Blasch, E. AU - John, V. T1 - Statistical comparison of image fusion algorithms: Recommendations. JO - Information Fusion JF - Information Fusion Y1 - 2017/07// VL - 36 M3 - Article SP - 251 EP - 260 SN - 15662535 AB - Pixel-level image fusion has been applied in a variety of applications, including multi-modal medical imaging, remote sensing, industrial inspection, video surveillance, and night vision etc. Various algorithms are being proposed for numerous applications which requires a comprehensive method of assessment to discern which methods provide decision support. Currently, the validation or assessment of newly proposed algorithms is done either subjectively or objectively. A subjective assessment is costly and affected by a number of factors that are difficult to control. On the other hand, an objective assessment is carried out with a fusion performance metric which is defined to evaluate the effectiveness and/or efficiency of the fusion operation. There are a number of fusion metrics proposed for fusion processes taking different perspectives. Most image fusion research presents a comparison of the proposed and existing fusion algorithms with selected fusion metric(s) over multiple image data sets. The proposed algorithm advantage is justified by the relative difference with the best or better metric values. However, the statistical significance of such difference is unknown leading to a misperception of the quantitative differences between methods. This paper proposes the use of non-parametric statistical analysis for comparisons of fusion algorithms along with the Image fusion Toolbox Employing Significance Testing (ImTEST). Strategies to use different tests in varied scenarios are presented and recommended. Experiments with recently published algorithms demonstrate the necessity to adopt the statistical comparison to establish a baseline for image fusion research. [ABSTRACT FROM AUTHOR] AB - Copyright of Information Fusion is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMAGE fusion KW - PIXELS KW - REMOTE sensing KW - DECISION support systems KW - PERFORMANCE evaluation KW - Image fusion KW - Performance assessment KW - Pixel-level fusion KW - Statistical comparison KW - Statistical significance N1 - Accession Number: 121005770; Liu, Z. 1; Email Address: zheng.liu@ieee.org Blasch, E. 2; Email Address: erik.blasch.1@us.af.mil John, V. 3; Email Address: vijayjohn@toyota-ti.ac.jp; Affiliation: 1: School of Engineering, Faculty of Applied Science, University of British Columbia (Okanagan), 1137 Alumni Avenue Kelowna, BC V1V 1V7 Canada 2: Information Directorate, Air Force Research Laboratory, Rome, NY, 13441 USA 3: Toyota Technological Institute, Tenpaku-Ku, Nagoya, 468-8511 Japan; Source Info: Jul2017, Vol. 36, p251; Subject Term: IMAGE fusion; Subject Term: PIXELS; Subject Term: REMOTE sensing; Subject Term: DECISION support systems; Subject Term: PERFORMANCE evaluation; Author-Supplied Keyword: Image fusion; Author-Supplied Keyword: Performance assessment; Author-Supplied Keyword: Pixel-level fusion; Author-Supplied Keyword: Statistical comparison; Author-Supplied Keyword: Statistical significance; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.inffus.2016.12.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121005770&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McDaniel, Sean A. AU - Berry, Patrick A. AU - Cook, Gary AU - Zelmon, David AU - Meissner, Stephanie AU - Meissner, Helmuth AU - Mu, Xaiodong T1 - CW and passively Q-Switched operation of a Ho:YAG waveguide laser. JO - Optics & Laser Technology JF - Optics & Laser Technology Y1 - 2017/06// VL - 91 M3 - Article SP - 1 EP - 6 SN - 00303992 AB - We report the first demonstration of a Ho: YAG crystal fiber waveguide (CFW) laser operating at 2.09 µm. The CFW structure was produced by adhesive free bonding of holmium doped yttrium aluminum garnet core to an undoped yttrium aluminum garnet cladding. The laser produced CW output powers greater than 500 mW with slope efficiency of 17%. The same crystal when passively Q-switched with Cr: ZnSe, produced pulsed output with energies of 1 μJ at a repetition frequency of 442 kHz. [ABSTRACT FROM AUTHOR] AB - Copyright of Optics & Laser Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Q-switching KW - YTTRIUM aluminum garnet KW - WAVEGUIDE lasers KW - CLADDING (Optics) KW - INFRARED lasers KW - Channeled waveguides KW - Ho:YAG KW - Infrared lasers KW - Solid-state lasers N1 - Accession Number: 120926120; McDaniel, Sean A. 1,2; Email Address: sean.a.mcdaniel@leidos.com Berry, Patrick A. 1 Cook, Gary 1 Zelmon, David 1 Meissner, Stephanie 3 Meissner, Helmuth 3 Mu, Xaiodong 3; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, 2241 Avionics Circle, Wright-Patterson AFB, OH 45433, USA 2: Leidos Inc., 3745 Pentagon Blvd, Beavercreek, OH 45431, USA 3: Onyx Optics Inc., 6551 Sierra Lane, Dublin, CA 94568, USA; Source Info: Jun2017, Vol. 91, p1; Subject Term: Q-switching; Subject Term: YTTRIUM aluminum garnet; Subject Term: WAVEGUIDE lasers; Subject Term: CLADDING (Optics); Subject Term: INFRARED lasers; Author-Supplied Keyword: Channeled waveguides; Author-Supplied Keyword: Ho:YAG; Author-Supplied Keyword: Infrared lasers; Author-Supplied Keyword: Solid-state lasers; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.optlastec.2016.12.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120926120&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Berger, M.-H. AU - Back, T. AU - Soukiassian, P. AU - Martinotti, D. AU - Douillard, L. AU - Fairchild, S. AU - Boeckl, J. AU - Filipov, V. AU - Sayir, A. T1 - Local investigation of the emissive properties of LaB-ZrB eutectics. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2017/05/15/ VL - 52 IS - 10 M3 - Article SP - 5537 EP - 5543 SN - 00222461 AB - LaB-ZrB composites obtained by directional solidification at eutectic composition have been investigated by low-energy electron microscopy (LEEM) and thermal emission electron microscopy (ThEEM). The transitions from the mirror electron microscopy mode to the LEEM mode for the hexa- and diborides indicate lower work functions of the two phases when embedded in the composite compared to the corresponding single phases. In the composite, the work function of the ZrB fibers is similar to that of the matrix and ThEEM images display a brighter contrast for the fibers. This is explained by the thermally activated diffusion of La on the fiber surface. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZIRCONIUM boride KW - METALLIC composites KW - ELECTRON microscopy KW - ELECTRON work function KW - SOLIDIFICATION N1 - Accession Number: 121468591; Berger, M.-H. 1; Email Address: marie-helene.berger@mines-paristech.fr Back, T.; Email Address: tyson.back.ctr@us.af.mil Soukiassian, P.; Email Address: patrick.soukiassian@cea.fr Martinotti, D. 2; Email Address: dominique.martinotti@cea.fr Douillard, L. 2; Email Address: ludovic.douillard@cea.fr Fairchild, S. 3; Email Address: steven.fairchild@us.af.mil Boeckl, J. 3; Email Address: john.boeckl@us.af.mil Filipov, V. 4; Email Address: filipov54@gmail.com Sayir, A.; Email Address: ali.sayir.2@us.af.mil; Affiliation: 1: MINES ParisTech, PSL Research University, MAT - Centre des matériaux, CNRS UMR 7633 , 91003 Evry France 2: SPEC, CEA, CNRS , Université Paris-Saclay CEA Saclay , 91191 Gif Sur Yvette France 3: Air Force Research Laboratory , Materials and Manufacturing Directorate , 3005 Hobson Way Wright-Patterson Air Force Base 45433 USA 4: Frantsevitch Institute for Problems of Materials Sciences , National Academy of Sciences of Ukraine , Kiev Ukraine; Source Info: May2017, Vol. 52 Issue 10, p5537; Subject Term: ZIRCONIUM boride; Subject Term: METALLIC composites; Subject Term: ELECTRON microscopy; Subject Term: ELECTRON work function; Subject Term: SOLIDIFICATION; Number of Pages: 7p; Illustrations: 3 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1007/s10853-017-0816-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121468591&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Iurov, Andrii AU - Gumbs, Godfrey AU - Huang, Danhong T1 - Exchange and correlation energies in silicene illuminated by circularly polarized light. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2017/05/15/ VL - 64 IS - 9 M3 - Article SP - 913 EP - 920 SN - 09500340 AB - Both the exchange and correlation energies due to Coulomb and spin-orbit interactions in a monolayer silicene with a buckled honeycomb lattice are calculated. We use Lindhard formalism for the polarizability. Many-body effects in such Dirac-like materials are studied with an emphasis on the influence of on-site potential differencebetween two sublattices. Our calculations have shown that the presence of an energy bandgapleads to a reduced exchange energy, which has some potential applications, such as, tunability of entanglement of electrons for quantum information devices. Since silicene acquires two energy gaps associated with up- and down-pseudospin, we can adjust its electronic properties in a wider range by varying these two bandgaps as compared to graphene. Another way to tune silicene electronic properties is through impurity doping. Our numerical results demonstrate the dependence of exchange and correlation energies on the energy bandgaps, doping and temperature under circularly polarized light. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL polarization KW - SPIN-orbit interactions (Physics) KW - COULOMB excitation KW - OPTICAL lattices KW - SILICON KW - QUANTUM information theory KW - bandgap KW - circularly polarized light KW - dressed states KW - exchange and correlation energies KW - Silicene N1 - Accession Number: 121504661; Iurov, Andrii 1 Gumbs, Godfrey 2,3 Huang, Danhong 1,4; Affiliation: 1: Center for High Technology Materials, University of New Mexico, Albuquerque, NM, USA. 2: Department of Physics and Astronomy, Hunter College of the City University of New York, New York, NY, USA. 3: Donostia International Physics Center (DIPC), San Sebastian, Spain. 4: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, NM, USA.; Source Info: May2017, Vol. 64 Issue 9, p913; Subject Term: OPTICAL polarization; Subject Term: SPIN-orbit interactions (Physics); Subject Term: COULOMB excitation; Subject Term: OPTICAL lattices; Subject Term: SILICON; Subject Term: QUANTUM information theory; Author-Supplied Keyword: bandgap; Author-Supplied Keyword: circularly polarized light; Author-Supplied Keyword: dressed states; Author-Supplied Keyword: exchange and correlation energies; Author-Supplied Keyword: Silicene; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1080/09500340.2016.1241439 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121504661&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gibson, Glen R. AU - Taylor, Nicole L. AU - Lamo, Nolan C. AU - Lackey, Jason K. T1 - Effects of Recent Instability on Cultivated Area Along the Euphrates River in Iraq. JO - Professional Geographer JF - Professional Geographer Y1 - 2017/05// VL - 69 IS - 2 M3 - Article SP - 163 EP - 176 SN - 00330124 AB - We used MODIS NDVI data to determine whether there was a significant change in cultivated area along the Euphrates River in Iraq after the Iraq War compared to before and during the war. Results revealed that mean cultivated area was largest during the pre–Iraq War period (2000–2003) with 99,115 Mha, reduced some during the early Iraq War period (2003–2006) to 83,480 Mha, reduced even further during the late Iraq War period (2007–2011) to 53,813 Mha due to drought, and increased slightly during the post–Iraq War period (2012–2015) to 69,161 Mha, although not returning to previous highs of the pre–Iraq War or early Iraq War periods. Statistical analysis with the Kruskal–Wallis test revealed that the small cultivated area during the post–Iraq War period was more closely related to the late Iraq War and drought period than previous periods, indicating that recent instability, such as political turmoil following the departure of U.S. troops, violent militant extremism, lack of economic investment, and environmental degradation, has had a similar effect on cultivated area as a devastating drought. (English) [ABSTRACT FROM AUTHOR] AB - Utilizamos datos del MODIS NDVI para determinar si en Irak se presentó un cambio significativo en el área cultivada a lo largo del Río Éufrates después de la Guerra de Irak, comparando tal área con la de antes y después de la guerra. Los resultados revelaron que el área media cultivada registró el máximo durante el período de pre–Guerra de Irak (2000–2003) con 99,115 Mha [Mha= millones de hectáreas], reduciéndose algo durante el período inicial de la Guerra de Irak (2003–2006) a 83,480 Mha, mermando un poco más durante el período tardío de la Guerra (2007–2011) hasta 53,813 Mha, debido a la sequía, e incrementándose ligeramente durante el período de pos–Guerra de Irak (2012–2015) hasta 69,161 Mha, pero sin regresar a los picos previos de los períodos pre–Guerra de Irak o el correspondiente a la fase inicial del aquel conflicto. El análisis estadístico con el test de Krustal–Wallis reveló que la pequeña área cultivada durante el período pos­–Guerra de Irak estuvo más estrechamente relacionada con la fase tardía de la Guerra de Irak y con el período de la sequía que con los períodos anteriores, sugiriendo que la inestabilidad reciente, tal como la confusión política que siguió a la salida de las tropas americanas, el violento extremismo militante, la falta de inversión económica y la degradación ambiental, ha tenido un efecto sobre el área cultivada similar al de una sequía devastadora. (French) [ABSTRACT FROM PUBLISHER] AB - Utilizamos datos del MODIS NDVI para determinar si en Irak se presentó un cambio significativo en el área cultivada a lo largo del Río Éufrates después de la Guerra de Irak, comparando tal área con la de antes y después de la guerra. Los resultados revelaron que el área media cultivada registró el máximo durante el período de pre–Guerra de Irak (2000–2003) con 99,115 Mha [Mha= millones de hectáreas], reduciéndose algo durante el período inicial de la Guerra de Irak (2003–2006) a 83,480 Mha, mermando un poco más durante el período tardío de la Guerra (2007–2011) hasta 53,813 Mha, debido a la sequía, e incrementándose ligeramente durante el período de pos–Guerra de Irak (2012–2015) hasta 69,161 Mha, pero sin regresar a los picos previos de los períodos pre–Guerra de Irak o el correspondiente a la fase inicial del aquel conflicto. El análisis estadístico con el test de Krustal–Wallis reveló que la pequeña área cultivada durante el período pos­–Guerra de Irak estuvo más estrechamente relacionada con la fase tardía de la Guerra de Irak y con el período de la sequía que con los períodos anteriores, sugiriendo que la inestabilidad reciente, tal como la confusión política que siguió a la salida de las tropas americanas, el violento extremismo militante, la falta de inversión económica y la degradación ambiental, ha tenido un efecto sobre el área cultivada similar al de una sequía devastadora. (French) [ABSTRACT FROM AUTHOR] AB - Copyright of Professional Geographer is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENVIRONMENTAL degradation KW - WAR -- Environmental aspects KW - DROUGHTS KW - LAND cover KW - GEOMORPHOLOGY KW - EUPHRATES River KW - agriculture KW - conflict KW - Iraq KW - land cover change KW - NDVI KW - agricultura KW - cambio de la cobertura del suelo KW - conflicto KW - Irak N1 - Accession Number: 121505742; Gibson, Glen R. 1 Taylor, Nicole L. 1 Lamo, Nolan C. 1 Lackey, Jason K. 1; Affiliation: 1: United States Air Force Academy; Source Info: May2017, Vol. 69 Issue 2, p163; Subject Term: ENVIRONMENTAL degradation; Subject Term: WAR -- Environmental aspects; Subject Term: DROUGHTS; Subject Term: LAND cover; Subject Term: GEOMORPHOLOGY; Subject Term: EUPHRATES River; Author-Supplied Keyword: agriculture; Author-Supplied Keyword: conflict; Author-Supplied Keyword: Iraq; Author-Supplied Keyword: land cover change; Author-Supplied Keyword: NDVI; Author-Supplied Keyword: agricultura; Author-Supplied Keyword: cambio de la cobertura del suelo; Author-Supplied Keyword: conflicto; Author-Supplied Keyword: Irak; Language of Keywords: English; Language of Keywords: French; Number of Pages: 14p; Document Type: Article L3 - 10.1080/00330124.2016.1194216 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121505742&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dennis, Scott T. AU - Jones, Keith W. T1 - Flexural-torsional vibration of a tapered C-section beam. JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2017/04/14/ VL - 393 M3 - Article SP - 401 EP - 414 SN - 0022460X AB - Previous studies have shown that numerical models of tapered thin-walled C-section beams based on a stepped or piecewise prismatic beam approximation are inaccurate regardless of the number of elements assumed in the discretization. Andrade recently addressed this problem by extending Vlasov beam theory to a tapered geometry resulting in new terms that vanish for the uniform beam. (See One-Dimensional Models for the Spatial Behaviour of Tapered Thin-Walled Bars with Open Cross-Sections: Static, Dynamic and Buckling Analyses, PhD Thesis, University of Coimbra, Portugal, 2012, https://estudogeral.sib.uc.pt ) In this paper, we model the coupled bending-twisting vibration of a cantilevered tapered thin-walled C-section using a Galerkin approximation of Andrade's beam equations resulting in an 8-degree-of-freedom beam element. Experimental natural frequencies and mode shapes for 3 prismatic and 2 tapered channel beams are compared to model predictions. In addition, comparisons are made to detailed shell finite element models and exact solutions for the uniform beams to confirm the validity of the approach. Comparisons to the incorrect stepped model are also presented. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLEXURAL vibrations (Mechanics) KW - TORSIONAL vibration KW - NUMERICAL analysis KW - VIBRATION (Mechanics) KW - GALERKIN methods KW - Beam KW - C-section KW - Taper KW - Thin-wall KW - Vibration KW - Vlasov N1 - Accession Number: 121222547; Dennis, Scott T. 1; Email Address: std1979@gmail.com Jones, Keith W. 1; Affiliation: 1: Department of Engineering Mechanics, United States Air Force Academy, CO 80840, United States; Source Info: Apr2017, Vol. 393, p401; Subject Term: FLEXURAL vibrations (Mechanics); Subject Term: TORSIONAL vibration; Subject Term: NUMERICAL analysis; Subject Term: VIBRATION (Mechanics); Subject Term: GALERKIN methods; Author-Supplied Keyword: Beam; Author-Supplied Keyword: C-section; Author-Supplied Keyword: Taper; Author-Supplied Keyword: Thin-wall; Author-Supplied Keyword: Vibration; Author-Supplied Keyword: Vlasov; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.jsv.2017.01.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121222547&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varshney, Vikas AU - Lee, Jonghoon AU - Li, Deyu AU - Brown, Joshua S. AU - Farmer, Barry L. AU - Voevodin, Andrey A. AU - Roy, Ajit K. T1 - Understanding thermal conductance across multi-wall carbon nanotube contacts: Role of nanotube curvature. JO - Carbon JF - Carbon Y1 - 2017/04// VL - 114 M3 - Article SP - 15 EP - 22 SN - 00086223 AB - Thermal energy transfer at the interconnects in carbon based nanoelectronic devices plays a crucial role towards their performance as well as their reliability. In this study, we investigate such thermal energy transfer across physically interacting multi-wall carbon nanotubes (MWCNTs) as a function of their diameter, length, number of walls, inter-layer chirality differences, and different angular orientation of the cross-contact. Using non-equilibrium molecular dynamics simulations for phonon energy transfer, we predict that MWCNTs' curvature and their number of walls emerge as two critical factors, with each of them determining the limiting value of the thermal conductance across MWCNT contacts in different diameter regimes. For thinner MWCNTs, the curvature determines the limiting value of the conductance and leads to an interesting non-monotonic character, while the number of walls dominates the contact conductance for large diameter MWCNTs. We discuss their respective origins and distinguish their governing regimes using several arguments –focusing of phonons, and confinement of the phonon focusing cone, large mean free path of graphite– and how they modulate radial thermal transport, leading to observed trends of thermal conductance across MWCNT contacts. [ABSTRACT FROM AUTHOR] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL conductivity KW - MULTIWALLED carbon nanotubes KW - NANOELECTRONICS KW - PHONONS KW - CHIRALITY KW - Interface thermal conductance KW - Molecular dynamics KW - MWCNTs KW - Phonon focusing KW - Thermal transport N1 - Accession Number: 120799537; Varshney, Vikas 1,2; Email Address: vikas.varshney.1.ctr@us.af.mil Lee, Jonghoon 1,2 Li, Deyu 3 Brown, Joshua S. 4 Farmer, Barry L. 1 Voevodin, Andrey A. 1 Roy, Ajit K. 1; Email Address: ajit.roy@us.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7500, USA 2: Universal Technology Corporation, 1270 N. Fairfield Rd., Dayton, OH 45432-2600, USA 3: Department of Mechanical Engineering, Vanderbilt University, Nashville, TN 37235-1592, USA 4: Department of Physics, Louisiana Technology University, Ruston, LA 71272, USA; Source Info: Apr2017, Vol. 114, p15; Subject Term: THERMAL conductivity; Subject Term: MULTIWALLED carbon nanotubes; Subject Term: NANOELECTRONICS; Subject Term: PHONONS; Subject Term: CHIRALITY; Author-Supplied Keyword: Interface thermal conductance; Author-Supplied Keyword: Molecular dynamics; Author-Supplied Keyword: MWCNTs; Author-Supplied Keyword: Phonon focusing; Author-Supplied Keyword: Thermal transport; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.carbon.2016.11.056 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120799537&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Andrew, Dallen L. AU - Carlson, Scott S. AU - Macha, John H. AU - Pilarczyk, Robert T. T1 - Investigating and interpreting failure analysis of high strength nuts made from nickel-base superalloy. JO - Engineering Failure Analysis JF - Engineering Failure Analysis Y1 - 2017/04// VL - 74 M3 - Article SP - 35 EP - 53 SN - 13506307 AB - The United States Air Force experienced failures of three separate zero-time, 220 ksi Inconel 718 nuts that were installed on A-10 aircraft. During the investigation, another nut fracture occurred on an operational jet. This bolt/nut combination had very few service hours on it and was well below the expected service life. A thorough review of the procurement data revealed that all the failed nuts had passed lot tests successfully. This led to concerns that the current procurement test requirements were insufficient to identify nuts that could unexpectedly fail in service. Another factor convoluting the situation was evidence of shanking on one of the four failed nuts. In order to determine the risk for potential future nut fractures, a novel experimental approach was developed and executed to evaluate the strength and integrity for all 220 ksi Inconel 718 nut manufacturers and sizes utilized on the A-10 aircraft. These experiments were designed to have a combination of shanking and pre-load and push the nuts to extreme limits with the intent of uncovering sub-par capability. The amount of torque at failure and the distance traveled by the nut were the two measures of performance. In addition to these experiments, a rigorous metallurgical evaluation was performed to determine if there were any metallurgical anomalies within the fractured and tested nuts. The measured torque values were then used to correlate to the metallurgical evaluations and the results are presented. This novel testing method provided quantitative data to determine the impact of the manufacturing process on the performance of the bolt/nut combination and demonstrated that a characterization of the microstructure alone may not provide evidence of corresponding nut performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Engineering Failure Analysis is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BOLTS & nuts -- Fatigue KW - FAILURE analysis (Engineering) KW - NICKEL alloys KW - HEAT resistant alloys KW - SERVICE life (Engineering) KW - Aircraft failures KW - Failure analysis KW - Structural failures KW - Structural integrity KW - Threaded fasteners KW - UNITED States. Air Force N1 - Accession Number: 121133518; Andrew, Dallen L. 1; Email Address: dallen.andrew@swri.org Carlson, Scott S. 2 Macha, John H. 1 Pilarczyk, Robert T. 3; Affiliation: 1: Southwest Research Institute, San Antonio, TX 78238, United States 2: Southwest Research Institute, A-10 Aircraft Structural Integrity Program, Hill AFB, UT 84056-5811, United States 3: United States Air Force, A-10 Aircraft Structural Integrity Program, Hill AFB, UT 84056-5811, United States; Source Info: Apr2017, Vol. 74, p35; Subject Term: BOLTS & nuts -- Fatigue; Subject Term: FAILURE analysis (Engineering); Subject Term: NICKEL alloys; Subject Term: HEAT resistant alloys; Subject Term: SERVICE life (Engineering); Author-Supplied Keyword: Aircraft failures; Author-Supplied Keyword: Failure analysis; Author-Supplied Keyword: Structural failures; Author-Supplied Keyword: Structural integrity; Author-Supplied Keyword: Threaded fasteners; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 928110 National Security; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.engfailanal.2016.12.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121133518&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Idesman, A. AU - Bhuiyan, A. AU - Foley, J.R. T1 - Accurate finite element simulation of stresses for stationary dynamic cracks under impact loading. JO - Finite Elements in Analysis & Design JF - Finite Elements in Analysis & Design Y1 - 2017/04// VL - 126 M3 - Article SP - 26 EP - 38 SN - 0168874X AB - The numerical technique for wave propagation problems recently developed in our papers has been applied to the accurate modeling of stresses in the vicinity of crack tips and the dynamic stress intensity factor (DSIF) for stationary cracks. The numerical technique includes the linear finite elements with reduced dispersion as well as the two-stage time-integration approach that quantifies and filters spurious high-frequency oscillations. Several benchmark problems for stationary cracks at impact loadings have been solved. The accuracy of the stress calculation in the vicinity of the crack tips and the DSIF can be significantly increased by the application of the finite elements with reduced dispersion. Surprisingly, even without a special treatment of singularities at crack tips, the linear finite elements with reduced dispersion (with no crack tip enrichment functions) yield much more accurate results than the XFEM with the special crack tip enrichment functions on comparable meshes. It is also interesting to mention that for the calculation of the DSIF by the finite elements with reduced dispersion there is no necessity in the filtering stage at impact loading (the spurious oscillations in the DSIF are small and decrease with mesh refinement). [ABSTRACT FROM AUTHOR] AB - Copyright of Finite Elements in Analysis & Design is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMPACT loads (Engineering) KW - CRACK propagation (Fracture mechanics) KW - FINITE element method KW - ELASTIC wave propagation KW - OSCILLATIONS KW - Cracks KW - Dynamic stress intensity factor KW - Elastic waves KW - Finite elements KW - Numerical dispersion N1 - Accession Number: 120754818; Idesman, A. 1; Email Address: alexander.idesman@ttu.edu Bhuiyan, A. 1 Foley, J.R. 2; Affiliation: 1: Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409-1021, USA 2: Air Force Research Laboratory, Munitions Directorate, Eglin Air Force Base, FL 32542, USA; Source Info: Apr2017, Vol. 126, p26; Subject Term: IMPACT loads (Engineering); Subject Term: CRACK propagation (Fracture mechanics); Subject Term: FINITE element method; Subject Term: ELASTIC wave propagation; Subject Term: OSCILLATIONS; Author-Supplied Keyword: Cracks; Author-Supplied Keyword: Dynamic stress intensity factor; Author-Supplied Keyword: Elastic waves; Author-Supplied Keyword: Finite elements; Author-Supplied Keyword: Numerical dispersion; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.finel.2016.12.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120754818&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dyakonov, G.S. AU - Mironov, S. AU - Semenova, I.P. AU - Valiev, R.Z. AU - Semiatin, S.L. T1 - The microstructure-strength relationship in severely-deformed commercial-purity titanium. JO - Materials Letters JF - Materials Letters Y1 - 2017/04// VL - 192 M3 - Article SP - 165 EP - 168 SN - 0167577X AB - Electron backscatter diffraction was applied to examine the microstructure developed in commercial-purity titanium subjected to equal channel angular pressing at 200 °C to a true strain of 8.4. The microstructure was characterized by a mean grain size of 0.4 μm and fraction of high-angle boundaries of 55%. However, it also contained a significant fraction of relatively coarse (>1 μm) remnants of original grains. A microstructure-properties analysis indicated that strengthening effect of ECAP was essentially contributed by substructure. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - STRENGTH of materials KW - DEFORMATIONS (Mechanics) KW - TITANIUM KW - ELECTRONS -- Backscattering KW - ELECTRON diffraction KW - Electron back-scatter diffraction KW - Equal channel angular pressing KW - Metals and alloys KW - Microstructure-strength relationship KW - Nanocrystalline materials N1 - Accession Number: 121067408; Dyakonov, G.S. 1,2 Mironov, S. 3; Email Address: smironov@material.tohoku.ac.jp Semenova, I.P. 1 Valiev, R.Z. 1,2 Semiatin, S.L. 4; Affiliation: 1: Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, 12 K. Marx St., Ufa 450000, Russia 2: Laboratory for Mechanics of Bulk Nanostructured Materials, Saint Petersburg State University, 26 Universitetsky Prospect, 198504, Peterhof, Saint Petersburg, Russia 3: Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Sendai 980-8579, Japan 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Apr2017, Vol. 192, p165; Subject Term: MICROSTRUCTURE; Subject Term: STRENGTH of materials; Subject Term: DEFORMATIONS (Mechanics); Subject Term: TITANIUM; Subject Term: ELECTRONS -- Backscattering; Subject Term: ELECTRON diffraction; Author-Supplied Keyword: Electron back-scatter diffraction; Author-Supplied Keyword: Equal channel angular pressing; Author-Supplied Keyword: Metals and alloys; Author-Supplied Keyword: Microstructure-strength relationship; Author-Supplied Keyword: Nanocrystalline materials; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.matlet.2016.12.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121067408&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gillen, Colin P. AU - Veremyev, Alexander AU - Prokopyev, Oleg A. AU - Pasiliao, Eduardo L. T1 - Robustness of solutions to critical node detection problems with imperfect data: a computational study. JO - Optimization Methods & Software JF - Optimization Methods & Software Y1 - 2017/04// VL - 32 IS - 2 M3 - Article SP - 250 EP - 273 SN - 10556788 AB - A class of critical node detection problems based upon the metric of communication efficiency is considered. While both exact integer programming and heuristic centrality-based methods exist for the solution of these problems, previous work has been mostly focused on the case where perfect information about the network is available. In this paper we suppose that some level of misinformation about nodes or edges has been inflicted on the observer's perception of the network, that is, there are hidden elements or fake additional elements. An extensive computational study is conducted to ascertain whether the exact integer-programming-based solutions perform better under imperfect information than heuristic methods. For large networks, exact methods cannot produce a solution in a reasonable amount of time, hence an approximation of the exact method is also considered for such instances. The obtained approximate solutions are again compared to centrality-based heuristics under the presence of imperfect data. [ABSTRACT FROM AUTHOR] AB - Copyright of Optimization Methods & Software is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIRELESS sensor nodes KW - ROBUST statistics KW - MIXED integer linear programming KW - HEURISTIC KW - COMMON fallacies KW - critical node detection KW - distance-based metrics KW - graph efficiency KW - mixed integer programming KW - network interdiction KW - robustness KW - sensitivity N1 - Accession Number: 121015356; Gillen, Colin P. 1 Veremyev, Alexander 2 Prokopyev, Oleg A. 1 Pasiliao, Eduardo L. 3; Affiliation: 1: Industrial Engineering, University of Pittsburgh, 1048 Benedum Hall,Pittsburgh, PA15261, USA 2: Industrial and Systems Engineering, University of Florida, 303 Weil Hall,Gainesville, FL32611, USA 3: Munitions Directorate, Air Force Research Laboratory, Building 13,Eglin AFB, FL32542, USA; Source Info: Apr2017, Vol. 32 Issue 2, p250; Subject Term: WIRELESS sensor nodes; Subject Term: ROBUST statistics; Subject Term: MIXED integer linear programming; Subject Term: HEURISTIC; Subject Term: COMMON fallacies; Author-Supplied Keyword: critical node detection; Author-Supplied Keyword: distance-based metrics; Author-Supplied Keyword: graph efficiency; Author-Supplied Keyword: mixed integer programming; Author-Supplied Keyword: network interdiction; Author-Supplied Keyword: robustness; Author-Supplied Keyword: sensitivity; Number of Pages: 24p; Document Type: Article L3 - 10.1080/10556788.2016.1214958 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121015356&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stozhkov, Vladimir AU - Pastukhov, Grigory AU - Boginski, Vladimir AU - Pasiliao, Eduardo L. T1 - New analytical lower bounds on the clique number of a graph. JO - Optimization Methods & Software JF - Optimization Methods & Software Y1 - 2017/04// VL - 32 IS - 2 M3 - Article SP - 336 EP - 368 SN - 10556788 AB - This paper proposes three new analytical lower bounds on the clique number of a graph and compares these bounds with those previously established in the literature. Two proposed bounds are derived from the well-known Motzkin–Straus quadratic programming formulation for the maximum clique problem. Theoretical results on the comparison of various bounds are established. Computational experiments are performed on random graph models such as the Erdös-Rényi model for uniform graphs and the generalized random graph model for power-law graphs that simulate graphs with different densities and assortativity coefficients. Computational results suggest that the proposed new analytical bounds improve the existing ones on many graph instances. [ABSTRACT FROM AUTHOR] AB - Copyright of Optimization Methods & Software is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CLIQUES (Sociology) KW - BOUNDS (Mathematics) KW - RANDOM graphs KW - QUADRATIC programming KW - PROBLEM solving KW - assortativity coefficient KW - clique number KW - Erdös-Rényi model KW - Motzkin–Straus formulation KW - power-law graphs KW - spectral graph theory N1 - Accession Number: 121015352; Stozhkov, Vladimir 1 Pastukhov, Grigory 2 Boginski, Vladimir 1,3 Pasiliao, Eduardo L. 4; Affiliation: 1: Department of Industrial and Systems Engineering, University of Florida, 303 Weil Hall,Gainesville, FL32611, USA 2: CSX Transportation, 500 Water St,Jacksonville, FL32202, USA 3: Department of Industrial Engineering and Management Systems, University of Central Florida, 12800 Pegasus Dr.,Orlando, FL32816, USA 4: Munitions Directorate, Air Force Research Laboratory, Building 13,Eglin AFB, FL32542, USA; Source Info: Apr2017, Vol. 32 Issue 2, p336; Subject Term: CLIQUES (Sociology); Subject Term: BOUNDS (Mathematics); Subject Term: RANDOM graphs; Subject Term: QUADRATIC programming; Subject Term: PROBLEM solving; Author-Supplied Keyword: assortativity coefficient; Author-Supplied Keyword: clique number; Author-Supplied Keyword: Erdös-Rényi model; Author-Supplied Keyword: Motzkin–Straus formulation; Author-Supplied Keyword: power-law graphs; Author-Supplied Keyword: spectral graph theory; Number of Pages: 33p; Document Type: Article L3 - 10.1080/10556788.2016.1172578 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121015352&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Veremyev, Alexander AU - Prokopyev, Oleg A. AU - Pasiliao, Eduardo L. T1 - Finding groups with maximum betweenness centrality. JO - Optimization Methods & Software JF - Optimization Methods & Software Y1 - 2017/04// VL - 32 IS - 2 M3 - Article SP - 369 EP - 399 SN - 10556788 AB - In this paper we consider the problem of identifying themost influential(orcentral)groupof nodes (of some predefined size) in a network. Such a group has the largest value of betweenness centrality or one of its variants, for example, the length-scaled or the bounded-distance betweenness centralities. We demonstrate that this problem can be modelled as a mixed integer program (MIP) that can be solved for reasonably sized network instances using off-the-shelf MIP solvers. We also discuss interesting relations between the group betweenness and the bounded-distance betweenness centrality concepts. In particular, we exploit these relations in an algorithmic scheme to identify approximate solutions for the original problem of identifying the most central group of nodes. Furthermore, we generalize our approach for identification of not only the most central groups of nodes, but also central groups of graph elements that consists of either nodes or edges exclusively, or their combination according to some pre-specified criteria. If necessary, additional cohesiveness properties can also be enforced, for example, the targeted group should form a clique or aκ-club. Finally, we conduct extensive computational experiments with different types of real-life and synthetic network instances to show the effectiveness and flexibility of the proposed framework. Even more importantly, our experiments reveal some interesting insights into the properties of influential groups of graph elements modelled using the maximum betweenness centrality concept or one of its variations. [ABSTRACT FROM AUTHOR] AB - Copyright of Optimization Methods & Software is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MIXED integer linear programming KW - BOUNDS (Mathematics) KW - APPROXIMATE solutions (Logic) KW - PROBLEM solving KW - ALGORITHMS KW - betweenness centrality KW - bounded-distance betweenness centrality KW - group betweenness centrality KW - mixed integer programming KW - most central groups N1 - Accession Number: 121015351; Veremyev, Alexander 1 Prokopyev, Oleg A. 2 Pasiliao, Eduardo L. 3; Affiliation: 1: Industrial and Systems Engineering, University of Florida, 303 Weil Hall,Gainesville, FL32611, USA 2: Industrial Engineering, University of Pittsburgh, 1048 Benedum Hall,Pittsburgh, PA15261, USA 3: Munitions Directorate, Air Force Research Laboratory, Building 13,Eglin AFB, FL32542, USA; Source Info: Apr2017, Vol. 32 Issue 2, p369; Subject Term: MIXED integer linear programming; Subject Term: BOUNDS (Mathematics); Subject Term: APPROXIMATE solutions (Logic); Subject Term: PROBLEM solving; Subject Term: ALGORITHMS; Author-Supplied Keyword: betweenness centrality; Author-Supplied Keyword: bounded-distance betweenness centrality; Author-Supplied Keyword: group betweenness centrality; Author-Supplied Keyword: mixed integer programming; Author-Supplied Keyword: most central groups; Number of Pages: 31p; Document Type: Article L3 - 10.1080/10556788.2016.1167892 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121015351&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lando-King, Elizabeth A. AU - Malone, Ruth E. AU - Haddock, Christopher K. AU - Carlos Poston, Walker S. AU - Lando, Harry A. AU - Jahnke, Sara A. AU - Hawk, Nita AU - Smith, Elizabeth A. T1 - Consequences of Inconsistency in Air Force Tobacco Control Policy. JO - Tobacco Regulatory Science JF - Tobacco Regulatory Science Y1 - 2017/04//Apr-Jun2017 VL - 3 IS - 2 M3 - Article SP - 232 EP - 238 AB - Objectives: Although the United States Air Force (USAF) has been a leader in efforts to reduce tobacco use among service members, tobacco continues to be a problem and initiatives to decrease tobacco use further require buy-in from leadership. We explored line leaderships' perspectives on tobacco. Methods: A diverse group of 10 senior commissioned and 10 non-commissioned personnel were interviewed. Results: Respondents reported substantial changes in the culture of tobacco use during their years of service, from near ubiquity to restricted use areas. They also perceived mixed messages coming from the USAF, including simultaneous discouragement of and accommodations for tobacco use, and variability in policies and enforcement. Many respondents indicated that allowing tobacco use creates conflict and undermines military discipline and suggested that a tobacco-free policy would be the best way to eliminate these contradictions. Conclusions: Although there has been substantial movement away from a culture of tobacco in the USAF, current policies and variable enforcement of these policies create unnecessary contradictions. Establishing a tobacco-free service would resolve these issues in addition to improving the health of service members and veterans. [ABSTRACT FROM AUTHOR] AB - Copyright of Tobacco Regulatory Science is the property of Tobacco Regulatory Science Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TOBACCO use -- Prevention KW - LEADERSHIP KW - SMOKING policy KW - SMOKING KW - HEALTH aspects KW - enforcement of smoking restrictions KW - smoking accommodations KW - tobacco KW - tobacco control policy KW - United States Air Force KW - UNITED States. Air Force N1 - Accession Number: 121277466; Lando-King, Elizabeth A. 1; Email Address: lando001@umn.edu Malone, Ruth E. 2 Haddock, Christopher K. 3 Carlos Poston, Walker S. 4 Lando, Harry A. 5 Jahnke, Sara A. 6 Hawk, Nita 7 Smith, Elizabeth A. 8; Affiliation: 1: Independent Consultant, Minneapolis, MN 2: Professor, Department of Social and Behavioral Sciences, School of Nursing, University of California, San Francisco, San Francisco, CA 3: Director, Institute for Biobehavioral Health Research, National Development and Research Institutes, Lee's Summit, MO 4: Deputy and Senior Principal Investigator, Institute for Biobehavioral Health Research, National Development and Research Institutes, Inc, New York, NY 5: Professor, Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN 6: Director and Principal Investigator, Center for Fire, Rescue & EMS Health Research, Institute for Biobehavioral Health Research, National Development and Research Institutes, Inc., New York, NY 7: Health Promotion/Fitness Analyst, United States Air Force, HQ/Air Force Medical Operations, San Antonio, TX 8: Professor, Social & Behavioral Sciences, University of California, San Francisco, San Francisco, CA; Source Info: Apr-Jun2017, Vol. 3 Issue 2, p232; Subject Term: TOBACCO use -- Prevention; Subject Term: LEADERSHIP; Subject Term: SMOKING policy; Subject Term: SMOKING; Subject Term: HEALTH aspects; Author-Supplied Keyword: enforcement of smoking restrictions; Author-Supplied Keyword: smoking accommodations; Author-Supplied Keyword: tobacco; Author-Supplied Keyword: tobacco control policy; Author-Supplied Keyword: United States Air Force; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 7p; Document Type: Article L3 - 10.18001/TRS.3.2.11 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121277466&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adebisi, R. A. AU - Sathish, S. AU - Shade, P. A. T1 - Incorporating crystallographic orientation in the development of resonant ultrasound spectroscopy. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/03/20/ VL - 1806 IS - 1 M3 - Article SP - 1 EP - 5 SN - 0094243X AB - Resonant ultrasound spectroscopy (RUS) measures the mechanical resonance of solids and uses the resonance frequencies to extract a complete set of elastic constants of the solid material. One of the advantages of the RUS method is its applicability to small single crystals. In the past two decades, the RUS technique has gained more acceptance as a nondestructive method to measure elastic properties. The inherent assumptions in the conventional RUS algorithm include free boundary condition on the specimen faces and the faces of the specimens are normal/parallel to the principal crystallographic axes. This assumption is fulfilled through a time consuming procedure that typically involves multiple iterations of sample cutting and inspection using an x-ray Laue method. Such an intensive method is not suitable for many samples in engineering applications. To estimate the elastic constants of such samples, a modified RUS algorithm has been developed to incorporate the sample crystallographic orientation expressed in terms of Euler angles. This modified RUS algorithm has been applied to estimate the elastic constants of cubic and hexagonal crystal structure samples with known orientation. The obtained values are comparable to literature values. With the incorporation of crystal orientation into the RUS algorithm, the elastic constants of samples with random crystal orientation were obtained. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALLOGRAPHIC shear KW - RESONANT ultrasound spectroscopy KW - ELASTIC constants KW - SINGLE crystals KW - X-ray astronomy N1 - Accession Number: 121363706; Adebisi, R. A. 1; Email Address: Rasheed.Adebisi@udri.udayton.edu Sathish, S. 1 Shade, P. A. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH 45433, USA; Source Info: 2017, Vol. 1806 Issue 1, p1; Subject Term: CRYSTALLOGRAPHIC shear; Subject Term: RESONANT ultrasound spectroscopy; Subject Term: ELASTIC constants; Subject Term: SINGLE crystals; Subject Term: X-ray astronomy; Number of Pages: 5p; Illustrations: 1 Diagram, 3 Charts; Document Type: Article L3 - 10.1063/1.4974648 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121363706&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Oneida, Erin K. AU - Shell, Eric B. AU - Sabbagh, Harold A. AU - Sabbagh, Elias AU - Murphy, R. Kim AU - Mazdiyasni, Siamack AU - Lindgren, Eric A. AU - Mooers, Ryan D. T1 - Model-based Probe State Estimation and Crack Inverse Methods Addressing Eddy Current Probe Variability. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/03/20/ VL - 1806 IS - 1 M3 - Article SP - 1 EP - 11 SN - 0094243X AB - A model-based calibration process is introduced that estimates the state of the eddy current probe. First, a carefully designed surrogate model was built using VIC-3D® simulations covering the critical range of probe rotation angles, tilt in two directions, and probe offset (liftoff) for both transverse and longitudinal flaw orientations. Some approximations and numerical compromises in the model were made to represent tilt in two directions and reduce simulation time; however, this surrogate model was found to represent the key trends in the eddy current response for each of the four probe properties in experimental verification studies well. Next, this model was incorporated into an iterative inversion scheme during the calibration process, to estimate the probe state while also addressing the amplitude/phase fit and centering the calibration notch indication. Results are presented showing several examples of the blind estimation of tilt and rotation angle for known experimental cases with reasonable agreement. Once the probe state is estimated, the final step is to transform the base crack inversion surrogate model and apply it for crack characterization. Using this process, results are presented demonstrating improved crack inversion performance for extreme probe states. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRACK propagation (Fracture mechanics) KW - EDDY currents (Electric) KW - ITERATIVE methods (Mathematics) KW - SIMULATION methods & models KW - LONGITUDINAL waves N1 - Accession Number: 121363749; Aldrin, John C. 1; Email Address: aldrin@computationaltools.com Oneida, Erin K. 2; Email Address: erin.oneida@wyle.com Shell, Eric B. 2; Email Address: eric.shell@wyle.com Sabbagh, Harold A. 3; Email Address: has@sabbagh.com Sabbagh, Elias 3; Email Address: ehs@sabbagh.com Murphy, R. Kim 3; Email Address: rkmurphy@att.net Mazdiyasni, Siamack 4; Email Address: siamack.mazdiyasni@us.af.mil Lindgren, Eric A. 4; Email Address: eric.lindgren@us.af.mil Mooers, Ryan D. 4; Email Address: ryan.mooers.1@us.af.mil; Affiliation: 1: Computational Tools, 4275 Chatham Avenue, Gurnee, IL 60031, USA 2: KBRwyle, 2700 Indian Ripple Road, Dayton, OH 45440, USA 3: Victor Technologies LLC, Bloomington, IN 47401, USA 4: Air Force Research Laboratory (AFRL/RXCA), Wright-Patterson AFB, OH 45433, USA; Source Info: 2017, Vol. 1806 Issue 1, p1; Subject Term: CRACK propagation (Fracture mechanics); Subject Term: EDDY currents (Electric); Subject Term: ITERATIVE methods (Mathematics); Subject Term: SIMULATION methods & models; Subject Term: LONGITUDINAL waves; Number of Pages: 11p; Illustrations: 2 Diagrams, 5 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.4974691 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121363749&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Hopkins, Deborah AU - Datuin, Marvin AU - Warchol, Mark AU - Warchol, Lyudmila AU - Forsyth, David S. AU - Buynak, Charlie AU - Lindgren, Eric A. T1 - Model Benchmarking and Reference Signals for Angled-beam Shear Wave Ultrasonic Nondestructive Evaluation (NDE) Inspections. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/03/20/ VL - 1806 IS - 1 M3 - Article SP - 1 EP - 10 SN - 0094243X AB - For model benchmark studies, the accuracy of the model is typically evaluated based on the change in response relative to a selected reference signal. The use of a side drilled hole (SDH) in a plate was investigated as a reference signal for angled beam shear wave inspection for aircraft structure inspections of fastener sites. Systematic studies were performed with varying SDH depth and size, and varying the ultrasonic probe frequency, focal depth, and probe height. Increased error was observed with the simulation of angled shear wave beams in the near-field. Even more significant, asymmetry in real probes and the inherent sensitivity of signals in the near-field to subtle test conditions were found to provide a greater challenge with achieving model agreement. To achieve quality model benchmark results for this problem, it is critical to carefully align the probe with the part geometry, to verify symmetry in probe response, and ideally avoid using reference signals from the near-field response. Suggested reference signals for angled beam shear wave inspections include using the 'through hole' corner specular reflection signal and the full skip' signal off of the far wall from the side drilled hole. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - SHEAR waves KW - THEORY of wave motion KW - PLATES (Engineering) KW - SIGNAL processing N1 - Accession Number: 121363782; Aldrin, John C. 1; Email Address: aldrin@computationaltools.com Hopkins, Deborah 2; Email Address: deborah@bercli.net Datuin, Marvin 2; Email Address: marvin@bercli.net Warchol, Mark 3; Email Address: mark.warchol@mfawndt.com Warchol, Lyudmila 3; Email Address: lyudmila.warchol@mfawndt.com Forsyth, David S. 3; Email Address: dforsyth@tri-austin.com Buynak, Charlie 4; Email Address: charles.buynak@us.af.mil Lindgren, Eric A. 4; Email Address: eric.lindgren@us.af.mil; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA 2: Bercli Corp, Berkeley, CA 94703, USA 3: TRI/Austin, Austin, TX 78746, USA 4: Air Force Research Laboratory (AFRL/RXCA), Wright-Patterson AFB, OH 45433, USA; Source Info: 2017, Vol. 1806 Issue 1, p1; Subject Term: NONDESTRUCTIVE testing; Subject Term: SHEAR waves; Subject Term: THEORY of wave motion; Subject Term: PLATES (Engineering); Subject Term: SIGNAL processing; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 332313 Plate Work Manufacturing; Number of Pages: 10p; Illustrations: 1 Diagram, 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1063/1.4974725 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121363782&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Biedermann, Eric AU - Heffernan, Julieanne AU - Mayes, Alexander AU - Gatewood, Garrett AU - Jauriqui, Leanne AU - Goodlet, Brent AU - Pollock, Tresa AU - Torbet, Chris AU - Aldrin, John C. AU - Mazdiyasni, Siamack T1 - Process Compensated Resonance Testing Modeling for Damage Evolution and Uncertainty Quantification. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/03/20/ VL - 1806 IS - 1 M3 - Article SP - 1 EP - 10 SN - 0094243X AB - Process Compensated Resonance Testing (PCRT) is a nondestructive evaluation (NDE) method based on the fundamentals of Resonant Ultrasound Spectroscopy (RUS). PCRT is used for material characterization, defect detection, process control and life monitoring of critical gas turbine engine and aircraft components. Forward modeling and model inversion for PCRT have the potential to greatly increase the method's material characterization capability while reducing its dependence on compiling a large population of physical resonance measurements. This paper presents progress on forward modeling studies for damage mechanisms and defects in common to structural materials for gas turbine engines. Finite element method (FEM) models of single crystal (SX) Ni-based superalloy Mar-M247 dog bones and Ti-6Al-4V cylindrical bars were created, and FEM modal analyses calculated the resonance frequencies for the samples in their baseline condition. Then the frequency effects of superalloy creep (high-temperature plastic deformation) and macroscopic texture (preferred crystallographic orientation of grains detrimental to fatigue properties) were evaluated. A PCRT sorting module for creep damage in Mar-M247 was trained with a virtual database made entirely of modeled design points. The sorting module demonstrated successful discrimination of design points with as little as 1% creep strain in the gauge section from a population of acceptable design points with a range of material and geometric variation. The resonance frequency effects of macro-scale texture in Ti-6Al-4V were quantified with forward models of cylinder samples. FEM-based model inversion was demonstrated for Mar-M247 bulk material properties and variations in crystallographic orientation. PCRT uncertainty quantification (UQ) was performed using Monte Carlo studies for Mar-M247 that quantified the overall uncertainty in resonance frequencies resulting from coupled variation in geometry, material properties, crystallographic orientation and creep damage. A model calibration process was also developed that evaluates inversion fitting to differences from a designated reference sample rather than absolute property values, yielding a reduction in fit error. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. 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KW - NONDESTRUCTIVE testing KW - RESONANT ultrasound spectroscopy KW - GAS turbines KW - FINITE element method KW - DATABASES N1 - Accession Number: 121363707; Biedermann, Eric 1; Email Address: ebiedermann@vibrantndt.com Heffernan, Julieanne 2; Email Address: jheffernan@vibrantndt.com Mayes, Alexander 2; Email Address: amayes@vibrantndt.com Gatewood, Garrett 2; Email Address: ggatewood@vibranndt.com Jauriqui, Leanne 2; Email Address: ljauriqui@vibrantndt.com Goodlet, Brent 3; Email Address: bgoodlet@engineering.ucsb.edu Pollock, Tresa 3; Email Address: pollock@engineering.ucsb.edu Torbet, Chris 3; Email Address: ctorbet@engineering.ucsb.edu Aldrin, John C. 4; Email Address: aldrin@computationaltools.com Mazdiyasni, Siamack 1; Email Address: siamack.mazdiyasni@us.af.mil; Affiliation: 1: Air Force Research Laboratory (AFRL/RXCA), Wright-Patterson AFB, OH, USA 2: Vibrant Corporation, Albuquerque, NM, USA 3: University of California, Santa Barbara, Santa Barbara, CA, USA 4: Computational Tools, Gurnee, IL, USA; Source Info: 2017, Vol. 1806 Issue 1, p1; Subject Term: NONDESTRUCTIVE testing; Subject Term: RESONANT ultrasound spectroscopy; Subject Term: GAS turbines; Subject Term: FINITE element method; Subject Term: DATABASES; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 10p; Illustrations: 2 Diagrams, 3 Charts, 8 Graphs; Document Type: Article L3 - 10.1063/1.4974649 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121363707&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blackshire, James L. T1 - Enhanced Damage Characterization Using Wavefield Imaging Methods. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/03/20/ VL - 1806 IS - 1 M3 - Article SP - 1 EP - 11 SN - 0094243X AB - Wavefield imaging methods are becoming a popular tool for characterizing and studying elastic field interactions in a wide variety of material systems. By using a scanning laser vibrometry detection system, the transient displacement fields generated by an ultrasonic source can be visualized and studied in detail. As a tool for quantitative nondestructive evaluation, the visualization of elastic waves provides a unique opportunity for understanding the scattering of elastic waves from insipient damage, where the detection and characterization of damage features using ultrasound can be enhanced in many instances. In the present effort, the detection and direct imaging of fatigue cracks in metals, and delaminations in composites, is described. An examination of the transient displacement fields near the scattering sites show additional details related to the local damage morphology, which can be difficult to account for using traditional far-field NDE sensing methods. A combination of forward models and experimental wavefield imaging methods were used to explore enhancement opportunities for the full 3-dimensional characterization of surface-breaking cracks and delaminations. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISPLACEMENT (Mechanics) KW - CRACK propagation (Fracture mechanics) KW - ELASTIC waves KW - THEORY of wave motion KW - FATIGUE cracks N1 - Accession Number: 121363710; Blackshire, James L. 1; Email Address: James.Blackshire@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RXCA), Wright-Patterson AFB, OH 45433, USA; Source Info: 2017, Vol. 1806 Issue 1, p1; Subject Term: DISPLACEMENT (Mechanics); Subject Term: CRACK propagation (Fracture mechanics); Subject Term: ELASTIC waves; Subject Term: THEORY of wave motion; Subject Term: FATIGUE cracks; Number of Pages: 11p; Illustrations: 5 Diagrams, 8 Graphs; Document Type: Article L3 - 10.1063/1.4974652 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121363710&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brown, Alexander AU - Eviston, Connor T1 - Model Development and Validation of Geometrically Complex Eddy Current Coils Using Finite Element Methods. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/03/20/ VL - 1806 IS - 1 M3 - Article SP - 1 EP - 8 SN - 0094243X AB - Multiple FEM models of complex eddy current coil geometries were created and validated to calculate the change of impedance due to the presence of a notch. Capable realistic simulations of eddy current inspections are required for model assisted probability of detection (MAPOD) studies, inversion algorithms, experimental verification, and tailored probe design for NDE applications. An FEM solver was chosen to model complex real world situations including varying probe dimensions and orientations along with complex probe geometries. This will also enable creation of a probe model library database with variable parameters. Verification and validation was performed using other commercially available eddy current modeling software as well as experimentally collected benchmark data. Data analysis and comparison showed that the created models were able to correctly model the probe and conductor interactions and accurately calculate the change in impedance of several experimental scenarios with acceptable error. The promising results of the models enabled the start of an eddy current probe model library to give experimenters easy access to powerful parameter based eddy current models for alternate project applications. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - ELECTRIC impedance KW - DATABASES KW - FINITE element method KW - ELECTRIC coils N1 - Accession Number: 121363751; Brown, Alexander 1; Email Address: alexander.brown.31@us.af.mil Eviston, Connor 1; Email Address: connor.eviston.ctr@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: 2017, Vol. 1806 Issue 1, p1; Subject Term: EDDY currents (Electric); Subject Term: ELECTRIC impedance; Subject Term: DATABASES; Subject Term: FINITE element method; Subject Term: ELECTRIC coils; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 8p; Illustrations: 3 Diagrams, 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.4974693 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121363751&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hong, Jonathan AU - Laflamme, Simon AU - Liang Cao AU - Dodson, Jacob T1 - Variable Input Observer for Structural Health Monitoring of High-Rate Systems. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/03/20/ VL - 1806 IS - 1 M3 - Article SP - 1 EP - 9 SN - 0094243X AB - The development of high-rate structural health monitoring methods is intended to provide damage detection on timescales of 10μs-10ms where speed of detection is critical to maintain structural integrity. Here, a novel Variable Input Observer (VIO) coupled with an adaptive observer is proposed as a potential solution for complex high-rate problems. The VIO is designed to adapt its input space based on real-time identification of the system's essential dynamics. By selecting appropriate time-delayed coordinates defined by both a time delay and an embedding dimension, the proper input space is chosen which allows more accurate estimations of the current state and a reduction of the convergence rate. The optimal time-delay is estimated based on mutual information, and the embedding dimension is based on false nearest neighbors. A simulation of the VIO is conducted on a two degree-of-freedom system with simulated damage. Results are compared with an adaptive Luenberger observer, a fixed time-delay observer, and a Kalman Filter. Under its preliminary design, the VIO converges significantly faster than the Luenberger and fixed observer. It performed similarly to the Kalman Filter in terms of convergence, but with greater accuracy. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRUCTURAL health monitoring KW - COMPUTER simulation KW - DEGREES of freedom KW - KALMAN filtering KW - FAULT tolerance (Engineering) N1 - Accession Number: 121363676; Hong, Jonathan 1,2; Email Address: jhong@ara.com Laflamme, Simon 2,3; Email Address: laflamme@iastate.edu Liang Cao 2; Email Address: liangcao@iastate.edu Dodson, Jacob 4; Email Address: jacob.dodson.2@us.af.mil; Affiliation: 1: Applied Research Associates Inc. 956 W. John Sims Pkwy Niceville, FL 32578, USA 2: Deparment of Civil, Construction, and Environmental Engineering, Iowa State University, Ames, IA 50011, USA 3: Center for Nondestructive Evaluation, Iowa State University, Ames, IA 50011, USA 4: Air Force Research Laboratory. 306 W. Eglin Blvd Eglin AFB, FL 32542, USA; Source Info: 2017, Vol. 1806 Issue 1, p1; Subject Term: STRUCTURAL health monitoring; Subject Term: COMPUTER simulation; Subject Term: DEGREES of freedom; Subject Term: KALMAN filtering; Subject Term: FAULT tolerance (Engineering); Number of Pages: 9p; Illustrations: 2 Diagrams, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.4974618 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121363676&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wertz, John AU - Wallentine, Sarah AU - Welter, John AU - Dierken, Josiah AU - Aldrin, John T1 - Volumetric Characterization of Delamination Fields via Angle Longitudinal Wave Ultrasound. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/03/20/ VL - 1806 IS - 1 M3 - Article SP - 1 EP - 7 SN - 0094243X AB - The volumetric characterization of delaminations necessarily precedes rigorous composite damage progression modeling. Yet, inspection of composite structures for subsurface damage remains largely focused on detection, resulting in a capability gap. In response to this need, angle longitudinal wave ultrasound was employed to characterize a composite surrogate containing a simulated three-dimensional delamination field with distinct regions of occluded features (shadow regions). Simple analytical models of the specimen were developed to guide subsequent experimentation through identification of optimal scanning parameters. The ensuing experiments provided visual evidence of the complete delamination field, including indications of features within the shadow regions. The results of this study demonstrate proof-of-principle for the use of angle longitudinal wave ultrasonic inspection for volumetric characterization of threedimensional delamination fields. Furthermore, the techniques developed herein form the foundation of succeeding efforts to characterize impact delaminations within inhomogeneous laminar materials such as polymer matrix composites. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPOSITE materials -- Delamination KW - LONGITUDINAL waves KW - MATERIALS -- Mechanical properties KW - SURFACES (Technology) KW - VOLUMETRIC analysis N1 - Accession Number: 121363708; Wertz, John 1; Email Address: john.wertz.1@us.af.mil Wallentine, Sarah 1; Email Address: sarah.wallentine.1@us.af.mil Welter, John 1 Dierken, Josiah 2 Aldrin, John 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 2: University of Dayton Research Institute, Dayton, OH 45469 3: Computational Tools, Gurnee, IL 60031; Source Info: 2017, Vol. 1806 Issue 1, p1; Subject Term: COMPOSITE materials -- Delamination; Subject Term: LONGITUDINAL waves; Subject Term: MATERIALS -- Mechanical properties; Subject Term: SURFACES (Technology); Subject Term: VOLUMETRIC analysis; Number of Pages: 7p; Illustrations: 4 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1063/1.4974650 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121363708&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beberniss, Timothy J. AU - Ehrhardt, David A. T1 - High-speed 3D digital image correlation vibration measurement: Recent advancements and noted limitations. JO - Mechanical Systems & Signal Processing JF - Mechanical Systems & Signal Processing Y1 - 2017/03/02/Mar2017 Part B VL - 86 M3 - Article SP - 35 EP - 48 SN - 08883270 AB - A review of the extensive studies on the feasibility and practicality of utilizing high-speed 3 dimensional digital image correlation (3D-DIC) for various random vibration measurement applications is presented. Demonstrated capabilities include finite element model updating utilizing full-field 3D-DIC static displacements, modal survey natural frequencies, damping, and mode shape results from 3D-DIC are baselined against laser Doppler vibrometry (LDV), a comparison between foil strain gage and 3D-DIC strain, and finally the unique application to a high-speed wind tunnel fluid–structure interaction study. Results show good agreement between 3D-DIC and more traditional vibration measurement techniques. Unfortunately, 3D-DIC vibration measurement is not without its limitations, which are also identified and explored in this study. The out-of-plane sensitivity required for vibration measurement for 3D-DIC is orders of magnitude less than LDV making higher frequency displacements difficult to sense. Furthermore, the digital cameras used to capture the DIC images have no filter to eliminate temporal aliasing of the digitized signal. Ultimately DIC is demonstrated as a valid alternative means to measure structural vibrations while one unique application achieves success where more traditional methods would fail. [ABSTRACT FROM AUTHOR] AB - Copyright of Mechanical Systems & Signal Processing is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THREE-dimensional imaging KW - DIGITAL image correlation KW - VIBRATION (Mechanics) -- Measurement KW - LASER Doppler velocimetry KW - FINITE element method KW - WIND tunnels KW - Digital image correlation KW - Laser vibrometry KW - Modal analysis KW - Random vibration N1 - Accession Number: 119483416; Beberniss, Timothy J. 1; Email Address: timothy.beberniss@us.af.mil Ehrhardt, David A. 2; Email Address: david.ehrhardt@bristol.ac.uk; Affiliation: 1: Structural Sciences Center, United States Air Force Research Labs, Wright-Patterson AFB, Dayton, OH, USA 2: Department of Mechanical Engineering, University of Bristol, UK; Source Info: Mar2017 Part B, Vol. 86, p35; Subject Term: THREE-dimensional imaging; Subject Term: DIGITAL image correlation; Subject Term: VIBRATION (Mechanics) -- Measurement; Subject Term: LASER Doppler velocimetry; Subject Term: FINITE element method; Subject Term: WIND tunnels; Author-Supplied Keyword: Digital image correlation; Author-Supplied Keyword: Laser vibrometry; Author-Supplied Keyword: Modal analysis; Author-Supplied Keyword: Random vibration; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.ymssp.2016.04.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119483416&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ehrhardt, David A. AU - Allen, Matthew S. AU - Yang, Shifei AU - Beberniss, Timothy J. T1 - Full-field linear and nonlinear measurements using Continuous-Scan Laser Doppler Vibrometry and high speed Three-Dimensional Digital Image Correlation. JO - Mechanical Systems & Signal Processing JF - Mechanical Systems & Signal Processing Y1 - 2017/03/02/Mar2017 Part B VL - 86 M3 - Article SP - 82 EP - 97 SN - 08883270 AB - Spatially detailed dynamic measurements of thin, lightweight structures can be difficult to obtain due to the structure׳s low mass and complicated deformations under certain loading conditions. If traditional contacting sensors, such as accelerometers, strain gauges, displacement transducers, etc., are used, the total number of measurement locations available is limited by the weight added and the effect each sensor has on the local stiffness of the contact area. Other non-contacting sensors, such as Laser Doppler Vibrometers (LDV), laser triangulation sensors, proximity sensors, etc., do not affect the dynamics of a structure, but are limited to single point measurements. In contrast, a few recently developed non-contacting measurement techniques have been shown to be capable of simultaneously measuring the response over a wide measurement field. Two techniques are considered here: Continuous-Scan Laser Doppler Vibrometry (CSLDV) and high speed Three-Dimensional Digital Image Correlation (3D DIC). With the use of these techniques, unprecedented measurement resolution can be achieved. In this work, the linear and nonlinear deformations of a clamped, nominally flat beam and plate under steady state sinusoidal loading will be measured using both techniques. In order to assess their relative merits, the linear natural frequencies, mode shapes, and nonlinear deformation shapes measured with each method are compared. Both measurement systems give comparable results in many cases, although 3D DIC is more accurate for spatially complex deformations at large amplitudes and CSLDV is more accurate at low amplitudes and when the spatial deformation pattern is simpler. [ABSTRACT FROM AUTHOR] AB - Copyright of Mechanical Systems & Signal Processing is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR mechanics KW - DIGITAL image correlation KW - STIFFNESS (Mechanics) KW - LINEAR models (Communication) KW - DEFORMATIONS (Mechanics) KW - LASER Doppler velocimetry KW - Continuous-Scan Laser Doppler Vibrometry KW - Full-field measurement KW - High speed three dimensional digital image correlation KW - Linear mode KW - Nonlinear deformation N1 - Accession Number: 119483420; Ehrhardt, David A. 1; Email Address: dehrhardt@wisc.edu Allen, Matthew S. 1; Email Address: msallen@engr.wisc.edu Yang, Shifei 2; Email Address: shifeiy@gmail.com Beberniss, Timothy J. 3; Affiliation: 1: Department of Engineering Physics, University of Wisconsin-Madison, 534 Engineering Research Building, 1500 Engineering Drive, Madison, WI 53706, United States 2: Praxair Inc., 175 East Park Drive, Tonawanda, NY 14150, United States 3: Aerospace Structures Engineer, Structural Sciences Centers, Aerospace Systems Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, United States; Source Info: Mar2017 Part B, Vol. 86, p82; Subject Term: NONLINEAR mechanics; Subject Term: DIGITAL image correlation; Subject Term: STIFFNESS (Mechanics); Subject Term: LINEAR models (Communication); Subject Term: DEFORMATIONS (Mechanics); Subject Term: LASER Doppler velocimetry; Author-Supplied Keyword: Continuous-Scan Laser Doppler Vibrometry; Author-Supplied Keyword: Full-field measurement; Author-Supplied Keyword: High speed three dimensional digital image correlation; Author-Supplied Keyword: Linear mode; Author-Supplied Keyword: Nonlinear deformation; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.ymssp.2015.12.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119483420&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Farquhar, John T. T1 - Airpower and Irregular War. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2017///Spring2017 VL - 31 IS - 1 M3 - Article SP - 51 EP - 60 PB - Superintendent of Documents SN - 1555385X AB - A review of the article "Why Air Power Alone Won't Beat ISIS [Islamic State Iraq and Syria]," which appeared in the previous issue of "Wall Street Journal" is presented. KW - AIR power (Military science) KW - ISLAMIC State (Organization) N1 - Accession Number: 121510201; Farquhar, John T. 1; Affiliation: 1: associate professor of military and strategic studies at the US Air Force Academy; Source Info: Spring2017, Vol. 31 Issue 1, p51; Subject Term: AIR power (Military science); Company/Entity: ISLAMIC State (Organization); Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121510201&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 121375563 T1 - Convergent Validity of the Patient-Reported Outcomes Measurement Information System's Physical Function Computerized Adaptive Test for the Knee and Shoulder Injury Sports Medicine Patient Population. AU - Robins, Richard Judd AU - Anderson, Mike B. AU - Zhang, Yingying AU - Presson, Angela P. AU - Burks, Robert T. AU - Greis, Patrick E. Y1 - 2017/03// N1 - Accession Number: 121375563. Language: English. Entry Date: In Process. Revision Date: 20170309. Publication Type: journal article. Journal Subset: Biomedical; Peer Reviewed; USA. NLM UID: 8506498. SP - 608 EP - 616 JO - Arthroscopy: The Journal of Arthroscopy & Related Surgery JF - Arthroscopy: The Journal of Arthroscopy & Related Surgery JA - ARTHROSCOPY VL - 33 IS - 3 CY - Philadelphia, Pennsylvania PB - W B Saunders AB - Purpose: To evaluate the convergent validity, precision, and completion times for the Physical Function Computerized Adaptive Test (PF-CAT) in a sports medicine patient population relative to standard measures of knee and shoulder function.Methods: We reviewed all patient visits from April through September 2014 with either knee or shoulder complaints from a university-based sports medicine clinic, during which PF-CAT, Single Assessment Numerical Evaluation (SANE), Simple Shoulder Test (SST), and American Shoulder and Elbow Surgeons (ASES) outcome scores for shoulder patients and PF-CAT, SANE, and International Knee Documentation Committee (IKDC) scores for knee patients were obtained, with an initial visit or one follow-up visit included in the study. Spearman correlation was used to evaluate pairwise agreement among scores. The McNemar χ2 test was used to evaluate a difference in the number of times floor and ceiling values occurred. Wilcoxon signed rank tests were used to compare differences in completion times.Results: In total, 415 shoulder and 450 knee clinical evaluations qualified for inclusion in the study. A high correlation was found between IKDC and PF-CAT scores (r = 0.75, P < .0001), and a moderately high correlation was found between PF-CAT and both SST (r = 0.68, P < .0001) and ASES (r = 0.63, P < .0001) scores. Maximum differences in the sum of floor-ceiling values versus the PF-CAT were 15% for the SST (P < .0001), 2.5% for the ASES (ceiling only, P = .0133), and 5.8% for the shoulder SANE (floor P = .0012, ceiling P = .0269). The PF-CAT had values of 0.4% for the shoulder and 0.6% for the knee. Zero percent of IKDC scores but 6.9% of knee SANE scores hit floor or ceiling values (floor P = .0019, ceiling P = .0007). The PF-CAT median completion time was lower at 55 seconds versus 268 seconds for the IKDC assessment (P < .0001), whereas shoulder patients' times were 61, 139, and 116 seconds for the PF-CAT, SST, and ASES evaluation, respectively (P < .0001).Conclusions: The PF-CAT showed a high correlation with IKDC scores and a moderately high correlation with ASES and SST outcomes. The PF-CAT takes significantly less time to complete and exhibits improved or similar floor and ceiling effects in comparison to IKDC, SST, and ASES scores. The PF-CAT can be used in evaluating sports medicine knee and shoulder patients.Level Of Evidence: Level III, cross-sectional study. SN - 0749-8063 AD - United States Air Force Academy, U.S.A.F. Academy, Colorado, U.S.A. AD - Department of Orthopaedics, University of Utah, Salt Lake City, Utah, U.S.A. AD - Division of Epidemiology, University of Utah, Salt Lake City, Utah, U.S.A. AD - University of Utah Orthopaedic Center, Salt Lake City, Utah, U.S.A. U2 - PMID: 27964968. DO - 10.1016/j.arthro.2016.08.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=121375563&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Tolstykh, Gleb P. AU - Tarango, Melissa AU - Roth, Caleb C. AU - Ibey, Bennett L. T1 - Nanosecond pulsed electric field induced dose dependent phosphatidylinositol-4,5-bisphosphate signaling and intracellular electro-sensitization. JO - BBA - Biomembranes JF - BBA - Biomembranes Y1 - 2017/03// VL - 1859 IS - 3 M3 - Article SP - 438 EP - 445 SN - 00052736 AB - Previously, it was demonstrated that nanometer-sized pores (nanopores) are formed in outer cellular membranes after exposure to nanosecond electric pulses (nsEPs). We reported that plasma membrane nanoporation affects phospholipids of the cell membrane, culminating in cascading phosphoinositide phosphatidylinositol- 4,5 -bisphosphate (PIP 2 ) intracellular signaling. In the current study, we show that nsEPs initiated electric field (EF) dose-dependent PIP 2 hydrolysis and/or depletion from the plasma membrane. This process was confirmed using fluorescent optical probes of PIP 2 hydrolysis: PLCδ-PH-EGFP and GFP-C1-PKCγ-C 1a . The 50% maximum response occurs with a single 600 ns pulse achieving an effective dose (ED 50 ) of EF ~ 8 kV/cm within our model cell system. At 16.2 kV/cm, the ED 50 for the pulse width was 484 ns. Reduction of the pulse width or EF amplitude gradually reduced the observed effect, but twenty 60 ns 16.2 kV/cm pulses produced an effect similar to a single 600 ns pulse of the same amplitude. Propidium iodide (PI) uptake after the nsEP exposure confirmed a strong relationship between EF-induced plasma membrane impact and PIP 2 depletion. These results have expanded our current knowledge of nsEPs dependent cell physiological effects, and serve as a basis for model development of new exposure standards, providing novel tools for drug independent stimulation and approaches to differential modulation of key cellular functions. [ABSTRACT FROM AUTHOR] AB - Copyright of BBA - Biomembranes is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOSPHOINOSITIDES KW - CELLULAR signal transduction KW - PHOSPHOLIPIDS KW - CELL membranes KW - HYDROLYSIS KW - Diacylglycerol KW - Inositol- 1,4,5 -trisphosphate KW - Membrane KW - Nanoporation KW - Nanosecond electric pulses KW - PIP 2 depletion N1 - Accession Number: 120951809; Tolstykh, Gleb P. 1; Email Address: gleb.tolstykh.ctr@us.af.mil Tarango, Melissa 1 Roth, Caleb C. 2 Ibey, Bennett L. 2; Affiliation: 1: General Dynamics Information Technology, 4141 Petroleum Road, JBSA Fort Sam Houston, TX 78234, USA 2: Air Force Research Laboratory, 711th Human Performance Wing, Airman Systems Directorate, Bioeffects Division, Radio Frequency Bioeffects Branch, 4141 Petroleum Road, JBSA Fort Sam Houston, TX 78234, USA; Source Info: Mar2017, Vol. 1859 Issue 3, p438; Subject Term: PHOSPHOINOSITIDES; Subject Term: CELLULAR signal transduction; Subject Term: PHOSPHOLIPIDS; Subject Term: CELL membranes; Subject Term: HYDROLYSIS; Author-Supplied Keyword: Diacylglycerol; Author-Supplied Keyword: Inositol- 1,4,5 -trisphosphate; Author-Supplied Keyword: Membrane; Author-Supplied Keyword: Nanoporation; Author-Supplied Keyword: Nanosecond electric pulses; Author-Supplied Keyword: PIP 2 depletion; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.bbamem.2017.01.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120951809&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McKinley, R. AU - McIntire, L. AU - Tabares, B. AU - Nelson, J. AU - Greier, B. AU - Harshman, S. AU - Goodyear, C. T1 - P174 Effects of transcranial direct current stimulation (tDCS) intensity on vigilance performance. JO - Clinical Neurophysiology JF - Clinical Neurophysiology Y1 - 2017/03// VL - 128 IS - 3 M3 - Article SP - e102 EP - e102 SN - 13882457 AB - Introduction Previously, evidence suggests that transcranial direct current stimulation (tDCS) can preserve vigilance performance for up to 6 h. However, the stimulation paradigm utilized in these studies may not be optimal. For example, Cuypers et al. (2013) found there may be more pronounced performance effects at lower tDCS intensities. The goal was to elucidate these effects and attempt to uncover biomarkers that correlate with performance. Objectives The purpose of this effort was to (1) quantify the effects of transcranial direct current stimulation (tDCS) intensity on vigilance performance, (2) measure the duration of tDCS after effects on vigilance, and (3) survey changes in biomarkers found in breath and establish correlations between biomarkers and tDCS intensity and vigilance performance. Patients & methods A within subjects experimental design was utilized with factor “stimulation intensity level” tested at 6 levels. The levels included tDCS at: (1) 0.5 mA, (2) 1 mA, 3) 1.5 mA, (4) 2 mA, (5) Sham, and (6) no electrodes/stimulation applied for 30 min. Participants performed a vigilance test during each visit. On each visit, they arrived at 0800 and performed the vigilance task while receiving one of the 6 randomized tDCS treatments. They provided breath samples before and after the test. Participants returned at 1600 for follow-up testing (no tDCS) and provided another breath sample. Results A one-way ANOVA revealed there was a significant effect of tDCS intensity on vigilance target detection accuracy ( p < 0.05). Post-hoc t-tests showed that accuracy was greater at 2 mA when compared to the other intensity levels. There were no significant differences in accuracy between tDCS intensity levels during the follow-up test. Concentrations of a substance in breath known as 1-proponol was found to be significantly lower at 2 mA when compared to sham tDCS. Conclusions The evidence suggests tDCS applied at 2 mA significantly improves vigilance performance. However, this effect is completely gone 8 h later. This supports previous evidence suggesting the effect of tDCS on vigilance is approximately 6 h. Additionally, a protein in breath was discovered whose concentrations correlate with performance and tDCS intensity. Hence, this could be a biomarker capable of monitoring operator vigilance state. [ABSTRACT FROM AUTHOR] AB - Copyright of Clinical Neurophysiology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSCRANIAL direct current stimulation KW - VIGILANCE (Psychology) KW - ELECTRODES KW - BRAIN stimulation KW - ANALYSIS of variance N1 - Accession Number: 121276161; McKinley, R. 1 McIntire, L. 1 Tabares, B. 1 Nelson, J. 1 Greier, B. 2 Harshman, S. 2 Goodyear, C. 1; Affiliation: 1: Air Force Reesarch Laboratory, Applied Neuroscience, Wright-Patterson AFB, United States 2: Air Force Research Laboratory, Wright-Patterson AFB, United States; Source Info: Mar2017, Vol. 128 Issue 3, pe102; Subject Term: TRANSCRANIAL direct current stimulation; Subject Term: VIGILANCE (Psychology); Subject Term: ELECTRODES; Subject Term: BRAIN stimulation; Subject Term: ANALYSIS of variance; Number of Pages: 1p; Document Type: Article L3 - 10.1016/j.clinph.2016.10.295 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121276161&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Giordano, James AU - Bikson, Marom AU - Kappenman, Emily S. AU - Clark, Vincent P. AU - Coslett, H. Branch AU - Hamblin, Michael R. AU - Hamilton, Roy AU - Jankord, Ryan AU - Kozumbo, Walter J. AU - McKinley, R. Andrew AU - Nitsche, Michael A. AU - Reilly, J. Patrick AU - Richardson, Jessica AU - Wurzman, Rachel AU - Calabrese, Edward T1 - Mechanisms and Effects of Transcranial Direct Current Stimulation. JO - Dose-Response JF - Dose-Response Y1 - 2017/03// VL - 15 IS - 1 M3 - Article SP - 1 EP - 22 SN - 15593258 AB - The US Air Force Office of Scientific Research convened a meeting of researchers in the fields of neuroscience, psychology, engineering, and medicine to discuss most pressing issues facing ongoing research in the field of transcranial direct current stimulation (tDCS) and related techniques. In this study, we present opinions prepared by participants of the meeting, focusing on the most promising areas of research, immediate and future goals for the field, and the potential for hormesis theory to inform tDCS research. Scientific, medical, and ethical considerations support the ongoing testing of tDCS in healthy and clinical populations, provided best protocols are used to maximize safety. Notwithstanding the need for ongoing research, promising applications include enhancing vigilance/attention in healthy volunteers, which can accelerate training and support learning. Commonly, tDCS is used as an adjunct to training/rehabilitation tasks with the goal of leftward shift in the learning/treatment effect curves. Although trials are encouraging, elucidating the basic mechanisms of tDCS will accelerate validation and adoption. To this end, biomarkers (eg, clinical neuroimaging and findings from animal models) can support hypotheses linking neurobiological mechanisms and behavioral effects. Dosage can be optimized using computational models of current flow and understanding dose-response. Both biomarkers and dosimetry should guide individualized interventions with the goal of reducing variability. Insights from other applied energy domains, including ionizing radiation, transcranial magnetic stimulation, and low-level laser (light) therapy, can be prudently leveraged. [ABSTRACT FROM AUTHOR] AB - Copyright of Dose-Response is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSCRANIAL direct current stimulation KW - HORMESIS KW - NEUROSCIENCES KW - BIOCHEMICAL markers KW - MATHEMATICAL models KW - MEDICAL research KW - biphasic KW - dose-response KW - electrical stimulation KW - hormesis KW - hormetic KW - tDCS N1 - Accession Number: 121232892; Giordano, James 1 Bikson, Marom 2 Kappenman, Emily S. 3 Clark, Vincent P. 4 Coslett, H. Branch 5 Hamblin, Michael R. 6 Hamilton, Roy 5 Jankord, Ryan 7 Kozumbo, Walter J. 8 McKinley, R. Andrew 7 Nitsche, Michael A. 9 Reilly, J. Patrick 10 Richardson, Jessica 11 Wurzman, Rachel 5 Calabrese, Edward 12; Email Address: edwardc@schoolph.umass.edu; Affiliation: 1: Department of Neurology and Biochemistry, Neuroethics Studies Program, Pellegrino Center for Clinical Bioethics, Georgetown University Medical Center, Washington, DC, USA 2: Biomedical Engineering, City College of New York, CUNY, New York, NY, USA 3: San Diego State University, Department of Psychology, San Diego, CA, USA 4: Psychology Clinical Neuroscience Center, Department of Psychology, University of New Mexico, Albuquerque, NM, USA 5: Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA 6: Wellman Center for Photomedicine, Massachusetts General Hospital and Department of Dermatology, Harvard Medical School, Boston, MA, USA 7: United States Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA 8: Hormesis Project, University of Massachusetts, Amherst, MA, USA 9: Department Psychology and Neurosciences, Leibniz Research Center for Working Environmental and Human Factors, Dortmund, Germany 10: Metatec Associates, Silver Spring, MD, USA 11: Department of Speech and Hearing Sciences, University of New Mexico, Albuquerque, NM, USA 12: Environmental Health Sciences, University of Massachusetts, Amherst, MA, USA; Source Info: Mar2017, Vol. 15 Issue 1, p1; Subject Term: TRANSCRANIAL direct current stimulation; Subject Term: HORMESIS; Subject Term: NEUROSCIENCES; Subject Term: BIOCHEMICAL markers; Subject Term: MATHEMATICAL models; Subject Term: MEDICAL research; Author-Supplied Keyword: biphasic; Author-Supplied Keyword: dose-response; Author-Supplied Keyword: electrical stimulation; Author-Supplied Keyword: hormesis; Author-Supplied Keyword: hormetic; Author-Supplied Keyword: tDCS; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 22p; Document Type: Article L3 - 10.1177/1559325816685467 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121232892&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Briones, Alejandro M. AU - Rankin, Brent A. AU - Stouffer, Scott D. AU - Erdmann, Timothy J. AU - Burrus, David L. T1 - Parallelized, Automated, and Predictive Imprint Cooling Model for Combustion Systems. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2017/03// VL - 139 IS - 3 M3 - Article SP - 1 EP - 12 SN - 07424795 AB - A novel parallelized, automated, and predictive imprint cooling model (PAPRICO) was developed for modeling of combustor liners using Reynolds-averaged Navier-Stokes (RANS). The methodology involves removing the film and effusion cooling jet geometry from the liner while retaining the cooling hole imprints on the liner. The PAPRICO can operate under two modalities, viz., two-sided and one-sided. For the two-sided PAPRICO model, the imprints are kept on the plenum and combustor sides of the liner. For the one-sided PAPRICO model, the imprints are retained only on the combustor side of the liner and there is no need for a plenum. The PAPRICO model neither needs a priori knowledge of the cooling flow rates through various combustor liner regions nor specific mesh partitioning. The imprint mass flow rate, momentum, enthalpy, turbulent kinetic energy, and eddy dissipation rate are included in the governing equations as volumetric source terms in cells adjacent to the liner on the combustor side. Additionally, the two-sided PAPRICO model includes corresponding volumetric sinks in cells adjacent to the liner on the plenum side. A referee combustor liner was simulated using PAPRICO under nonreacting flow conditions. The PAPRICO results were compared against predictions of nonreacting flow results of a resolved liner geometry, against a combustor liner with prescribed mass and enthalpy source terms (simplified liner) and against measurements. The results clearly conclude that PAPRICO can qualitatively and quantitatively emulate the local turbulent flow field with a reduced mesh size. The simplified liner fails to emulate the local turbulent flow field. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Combustion chambers KW - Cooling KW - Enthalpy KW - Flow (Dynamics) KW - Geometry KW - Jets KW - Modeling KW - Momentum KW - Turbulence N1 - Accession Number: 121317044; Briones, Alejandro M. 1; Email Address: alejandro.briones@udri.udayton.edu Rankin, Brent A. 2; Email Address: brent.rankin.1@us.af.mil Stouffer, Scott D. 1; Email Address: scott.stouffer.ctr@us.af.mil Erdmann, Timothy J. 3; Email Address: timothy.erdmann.3.ctr@us.af.mil Burrus, David L. 3; Email Address: david.burrus.ctr@us.af.mil; Affiliation: 1: Energy and Environmental Engineering Division, University of Dayton Research Institute, Dayton, OH 45469 2: Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH 45433 3: Innovative Scientific Solutions, Inc., Dayton, OH 45459; Source Info: Mar2017, Vol. 139 Issue 3, p1; Author-Supplied Keyword: Combustion chambers; Author-Supplied Keyword: Cooling; Author-Supplied Keyword: Enthalpy; Author-Supplied Keyword: Flow (Dynamics); Author-Supplied Keyword: Geometry; Author-Supplied Keyword: Jets; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Momentum; Author-Supplied Keyword: Turbulence; Number of Pages: 12p; Document Type: Article L3 - 10.1115/1.4034499 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121317044&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nguyen, Kiet A. AU - Pachter, Ruth AU - Day, Paul N. T1 - Calculations of One- and Two-Photon Absorption Spectra for Molecular Metal Chalcogenide Clusters with Electron-Acceptor Ligands. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2017/03// VL - 121 IS - 8 M3 - Article SP - 1748 EP - 1759 SN - 10895639 AB - We present calculated one- and two-photon absorption (OPA, TPA) spectra for molecular neutral, cation, and anion cadmium chalcogenide nonstoichiometric clusters [CdnE'm'(ER)m, E = S and Se, R = hydrogen, methyl, phenyl, para-nitrophenyl, para-cyanophenyl], ranging from less than 1 nm to more than 2 nm in size with well-defined structures. A systematic treatment of the clusters is carried out to assess the effects of size and ligand on their linear and nonlinear optical properties. Ligands and cluster size were found to have a large influence on the color and intensity of the electronic absorption spectra. TPA cross sections were found to increase linearly with cluster size. Electron-accepting ligands were also found to induce linear enhancement in TPA cross sections. Blue shifts of TPA maxima were observed for the first band with reduced molecular size. The effects of phenyl, para-nitrophenyl, and para-cyanophenyl substitutions, as well as changes in the chalcogenide atom, have been analyzed in detail. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHT absorption KW - MOLECULAR spectra KW - CADMIUM compounds KW - CHALCOGENIDES KW - CLUSTERING of particles KW - NONSTOICHIOMETRIC compounds N1 - Accession Number: 121531937; Nguyen, Kiet A. 1 Pachter, Ruth 1 Day, Paul N. 1,2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, United States 2: UES, Inc. Dayton, Ohio 45432, United States; Source Info: Mar2017, Vol. 121 Issue 8, p1748; Subject Term: LIGHT absorption; Subject Term: MOLECULAR spectra; Subject Term: CADMIUM compounds; Subject Term: CHALCOGENIDES; Subject Term: CLUSTERING of particles; Subject Term: NONSTOICHIOMETRIC compounds; Number of Pages: 12p; Document Type: Article L3 - 10.1021/acs.jpca.6b10955 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121531937&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gortat, D. AU - Murray, P.T. AU - Fairchild, S.B. AU - Sparkes, M. AU - Back, T.C. AU - Gruen, G.J. AU - Cahay, M.M. AU - Lockwood, N.P. AU - O'Neill, W. T1 - Laser surface melting of stainless steel anodes for reduced hydrogen outgassing. JO - Materials Letters JF - Materials Letters Y1 - 2017/03// VL - 190 M3 - Article SP - 5 EP - 8 SN - 0167577X AB - Anodes of 304 stainless steel have been processed by a continuous wave Yb fiber laser with a wavelength of 1.064 μm and subjected to 50 keV electron bombardment in order to determine the extent to which hydrogen outgassing is reduced by the laser surface melting treatment. The results show a reduction in outgassing, by approximately a factor of four compared to that from untreated stainless steel. This is attributed to a reduction in the number of grain boundaries which serve as trapping sites for hydrogen in stainless steel. Such laser treated anodes do not require post-processing to preserve the benefits of the treatment and are excellent candidates for use in high power source devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MELTING KW - METALLIC surfaces KW - STAINLESS steel KW - METALS -- Hydrogen content KW - ELECTRON bombarded semiconductor devices KW - FIBER lasers KW - METALS -- Heat treatment KW - CRYSTAL grain boundaries KW - Grain boundaries KW - Hydrogen KW - Laser processing KW - Metals and alloys KW - Outgassing KW - Vacuum electronics N1 - Accession Number: 121025734; Gortat, D. 1; Email Address: dg458@cam.ac.uk Murray, P.T. 2 Fairchild, S.B. 3 Sparkes, M. 1 Back, T.C. 2 Gruen, G.J. 2 Cahay, M.M. 4 Lockwood, N.P. 5 O'Neill, W. 1; Affiliation: 1: Institute for Manufacturing, University of Cambridge, 17 Charles Babbage Road, Cambridge CB3 0FS, UK 2: Research Institute, University of Dayton, Dayton, OH 45469, USA 3: Air Force Research Laboratory, WPAFB, OH 45433, USA 4: Spintronics and Vacuum Nanoelectronics Laboratory, University of Cincinnati, Cincinnati, OH 45221, USA 5: Directed Energy Directorate, Air Force Research Laboratory, Kirtland, AFB, NM 87117, USA; Source Info: Mar2017, Vol. 190, p5; Subject Term: MELTING; Subject Term: METALLIC surfaces; Subject Term: STAINLESS steel; Subject Term: METALS -- Hydrogen content; Subject Term: ELECTRON bombarded semiconductor devices; Subject Term: FIBER lasers; Subject Term: METALS -- Heat treatment; Subject Term: CRYSTAL grain boundaries; Author-Supplied Keyword: Grain boundaries; Author-Supplied Keyword: Hydrogen; Author-Supplied Keyword: Laser processing; Author-Supplied Keyword: Metals and alloys; Author-Supplied Keyword: Outgassing; Author-Supplied Keyword: Vacuum electronics; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.matlet.2016.12.101 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121025734&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sibomana, Isaie AU - DelRaso, Nicholas AU - Mattie, David AU - Raymer, Michael AU - Reo, Nicholas T1 - Furosemide enhances the sensitivity of urinary metabolomics for assessment of kidney function. JO - Metabolomics JF - Metabolomics Y1 - 2017/03// VL - 13 IS - 3 M3 - Article SP - 1 EP - 17 SN - 15733882 AB - Introduction: The ability of urinary metabolomics to detect meaningful, tissue-specific, biological effects (i.e., toxicity, disease) is compounded by high background variability. We hypothesize that sensitivity can be enhanced by imposing a tissue-targeted metabolic stressor. Objective: We tested whether the sensitivity of metabolomics to assess kidney function is improved under the diuretic stress of furosemide. Methods: To mildly compromise kidney, rats were given a sub-acute dose of d-serine. Then at 24 h postdose, we administered vehicle solution (control) or the diuretic drug, furosemide, and conducted NMR-based urinary metabolomics. Results: Principal Components and OPLS discriminant analyses showed no effects on urinary profiles in rats receiving d-serine alone. However, the effects of d-serine were observable under furosemide-induced stress, as urinary profiles classified separately from rats receiving furosemide alone or vehicle-treated controls (p < 0.001). Furthermore, this profile was uniquely different from a co-treatment effect observed following co-administration of d-serine + furosemide. We identified 24 metabolites to classify the effects of furosemide in normal rats vs. d-serine-compromised rats. Most notably, a furosemide-induced increase in urinary excretion of α-ketoglutarate, creatinine, trigonelline, and tryptophan in control rats, was significantly reduced in d-serine exposed rats (p < 0.05). Interestingly, increased tryptophan metabolism has been shown to correlate with the severity of kidney transplant failure and chronic kidney disease. Conclusions: We attribute these effects to differences in kidney function, which were only detectable under the stress imposed by furosemide. This technique may extend to other organ systems and may provide improved sensitivity for assessment of tissue function or early detection of disease. [ABSTRACT FROM AUTHOR] AB - Copyright of Metabolomics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - URINARY organs -- Physiology KW - METABOLIC profile tests KW - KIDNEY function tests KW - TRYPTOPHAN metabolism KW - FUROSEMIDE KW - KIDNEY transplants KW - SENSITIVITY analysis KW - d-Serine toxicity KW - Furosemide KW - Kidney toxicity KW - Metabolomics assessment of tissue function KW - NMR, metabolomics N1 - Accession Number: 121289122; Sibomana, Isaie DelRaso, Nicholas 1 Mattie, David 1 Raymer, Michael 2 Reo, Nicholas 3; Email Address: Nicholas.reo@wright.edu; Affiliation: 1: Air Force Research Laboratory, 711th Human Performance Wing, Human Effectiveness Directorate , Wright-Patterson Air Force Base , Dayton 45435 USA 2: Department of Computer Science and Engineering , Wright State University , Dayton 45435 USA 3: Department of Biochemistry and Molecular Biology, Magnetic Resonance Laboratory, Boonshoft School of Medicine, 162 Diggs Laboratory , Wright State University , Dayton 45435 USA; Source Info: Mar2017, Vol. 13 Issue 3, p1; Subject Term: URINARY organs -- Physiology; Subject Term: METABOLIC profile tests; Subject Term: KIDNEY function tests; Subject Term: TRYPTOPHAN metabolism; Subject Term: FUROSEMIDE; Subject Term: KIDNEY transplants; Subject Term: SENSITIVITY analysis; Author-Supplied Keyword: d-Serine toxicity; Author-Supplied Keyword: Furosemide; Author-Supplied Keyword: Kidney toxicity; Author-Supplied Keyword: Metabolomics assessment of tissue function; Author-Supplied Keyword: NMR, metabolomics; Number of Pages: 17p; Document Type: Article L3 - 10.1007/s11306-017-1162-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121289122&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gambone Hudson, Angela AU - Curtis, Robert T1 - Before automating the blood bank, evaluate compatibility with existing systems. JO - MLO: Medical Laboratory Observer JF - MLO: Medical Laboratory Observer Y1 - 2017/03// VL - 49 IS - 3 M3 - Article SP - 42 EP - 42 PB - NP Communications, LLC SN - 05807247 AB - The article offers tips on the integration of automation into the blood bank based on the goal that it will increase the efficiency of the testing workflow on the existing clinical laboratory system and ensure the quality of patient care. Topics addressed include the additional laboratory equipment needed, the communication connection requirement of health information technology (HIT), and validations for acquired equipment. A discussion on the laboratory structure is provided. KW - ANIMALS KW - AUTOMATION KW - BLOOD banks KW - COMMUNICATION KW - LABORATORIES KW - LEADERSHIP KW - MEDICAL informatics KW - TECHNOLOGY KW - WORKFLOW KW - ELECTRONIC health records N1 - Accession Number: 121396903; Gambone Hudson, Angela 1 Curtis, Robert 2,3; Affiliation: 1: Lieutenant Colonel, United States Air Force as Commander, Laboratory Flight, Joint Base San Antonio-Ft Sam Houston 2: Major in the United States Air Force 3: Flight Commander, Diagnostics Services, F.E. Warren Air Force Base, Wyoming; Source Info: Mar2017, Vol. 49 Issue 3, p42; Subject Term: ANIMALS; Subject Term: AUTOMATION; Subject Term: BLOOD banks; Subject Term: COMMUNICATION; Subject Term: LABORATORIES; Subject Term: LEADERSHIP; Subject Term: MEDICAL informatics; Subject Term: TECHNOLOGY; Subject Term: WORKFLOW; Subject Term: ELECTRONIC health records; NAICS/Industry Codes: 621991 Blood and Organ Banks; NAICS/Industry Codes: 621990 All other ambulatory health care services; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 621511 Medical Laboratories; NAICS/Industry Codes: 541940 Veterinary Services; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121396903&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 121396903 T1 - Before automating the blood bank, evaluate compatibility with existing systems. AU - Gambone Hudson, Angela AU - Curtis, Robert Y1 - 2017/03// N1 - Accession Number: 121396903. Language: English. Entry Date: 20170227. Revision Date: 20170228. Publication Type: Article. Journal Subset: Allied Health; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 0225602. KW - Blood Banks KW - Automation KW - Animals KW - Laboratories KW - Medical Informatics KW - Workflow KW - Laboratory Automation Systems KW - Communication KW - Technology KW - Leadership KW - Electronic Health Records SP - 42 EP - 42 JO - MLO: Medical Laboratory Observer JF - MLO: Medical Laboratory Observer JA - MLO VL - 49 IS - 3 CY - Sarasota, Florida PB - NP Communications, LLC SN - 0580-7247 AD - Lieutenant Colonel, United States Air Force as Commander, Laboratory Flight, Joint Base San Antonio-Ft Sam Houston AD - Major in the United States Air Force AD - Flight Commander, Diagnostics Services, F.E. Warren Air Force Base, Wyoming UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=121396903&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Selesnick, R.S. AU - Baker, D.N. AU - Kanekal, S.G. T1 - Proton straggling in thick silicon detectors. JO - Nuclear Instruments & Methods in Physics Research Section B JF - Nuclear Instruments & Methods in Physics Research Section B Y1 - 2017/03// VL - 394 M3 - Article SP - 145 EP - 152 SN - 0168583X AB - Straggling functions for protons in thick silicon radiation detectors are computed by Monte Carlo simulation. Mean energy loss is constrained by the silicon stopping power, providing higher straggling at low energy and probabilities for stopping within the detector volume. By matching the first four moments of simulated energy-loss distributions, straggling functions are approximated by a log-normal distribution that is accurate for Vavilov κ ≳ 0.3 . They are verified by comparison to experimental proton data from a charged particle telescope. [ABSTRACT FROM AUTHOR] AB - Copyright of Nuclear Instruments & Methods in Physics Research Section B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAGGLING (Nuclear physics) KW - SILICON radiation detectors KW - PROTONS KW - MONTE Carlo method KW - ENERGY dissipation KW - Protons KW - Radiation detection KW - Straggling N1 - Accession Number: 121132732; Selesnick, R.S. 1; Email Address: richard.selesnick@us.af.mil Baker, D.N. 2 Kanekal, S.G. 3; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117, USA 2: Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80303, USA 3: NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA; Source Info: Mar2017, Vol. 394, p145; Subject Term: STRAGGLING (Nuclear physics); Subject Term: SILICON radiation detectors; Subject Term: PROTONS; Subject Term: MONTE Carlo method; Subject Term: ENERGY dissipation; Author-Supplied Keyword: Protons; Author-Supplied Keyword: Radiation detection; Author-Supplied Keyword: Straggling; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.nimb.2017.01.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121132732&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 121632575 T1 - Readmission and Late Mortality After Critical Illness in Childhood. AU - Hartman, Mary E. AU - Saeed, Mohammed J. AU - Bennett, Tellen AU - Typpo, Katri AU - Matos, Renee AU - Olsen, Margaret A. Y1 - 2017/03// N1 - Accession Number: 121632575. Language: English. Entry Date: In Process. Revision Date: 20170311. Publication Type: journal article. Journal Subset: Biomedical; Peer Reviewed; USA. Grant Information: UL1 TR000448/TR/NCATS NIH HHS/United States. NLM UID: 100954653. SP - e112 EP - e121 JO - Pediatric Critical Care Medicine JF - Pediatric Critical Care Medicine JA - PEDIATR CRIT CARE MED VL - 18 IS - 3 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - Objectives: Little is known about the ongoing mortality risk and healthcare utilization among U.S. children after discharge from a hospitalization involving ICU care. We sought to understand risks for hospital readmission and trends in mortality during the year following ICU discharge.Design: Retrospective observational cohort study.Setting: This study was performed using administrative claims data from 2006-2013 obtained from the Truven Health Analytics MarketScan Database.Subjects: We included all children in the dataset admitted to a U.S. ICU less than or equal to 18 years old.Interventions: The primary outcome was nonelective readmission in the year following discharge. Risk of rehospitalization was determined using a Cox proportional hazards model.Measurements and Main Results: We identified 109,130 children with at least one ICU admission in the dataset. Over three quarters of the index ICU admissions (78.6%) had an ICU length of stay less than or equal to 3 days, and the overall index hospitalization mortality rate was 1.4%. In multivariate analysis, risk of nonelective readmission for children without cancer was higher with longer index ICU admission length of stay, younger age, and several chronic and acute conditions. By the end of the 1-year observation period, 36.0% of children with an index ICU length of stay greater than or equal to 14 days had been readmitted, compared with only 13.9% of children who had an index ICU length of stay equals to 1 day. Mortality in the year after ICU discharge was low overall (106 deaths per 10,000 person-years of observation) but was high among children with an initial index ICU admission length of stay greater than or equal to 14 days (599 deaths per 10,000 person-years).Conclusions: Readmission after ICU care is common. Further research is needed to investigate the potentially modifiable factors affecting likelihood of readmissions after discharge from the ICU. Although late mortality was relatively uncommon overall, it was 10-fold higher in the year after ICU discharge than in the general U.S. pediatric population. SN - 1529-7535 AD - Department of Pediatric Intensive Care, Washington University in St. Louis, St. Louis, MO. AD - Division of Infectious Diseases, Department of Medicine, Washington University in St. Louis, St. Louis, MO. AD - Pediatric Critical Care, University of Colorado School of Medicine and Children’s Hospital Colorado, Aurora, CO. AD - Department of Pediatrics, University of Arizona, Tucson, AZ. AD - San Antonio Military Medical Center, United States Air Force, San Antonio, TX. AD - Division of Public Health Sciences, Department of Surgery, Washington University in St. Louis, St. Louis, MO. U2 - PMID: 28107264. DO - 10.1097/PCC.0000000000001062 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=121632575&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2017-05521-002 AN - 2017-05521-002 AU - Patterson, Robert Earl AU - Eggleston, Robert G. T1 - Intuitive cognition. JF - Journal of Cognitive Engineering and Decision Making JO - Journal of Cognitive Engineering and Decision Making JA - J Cogn Eng Decis Mak Y1 - 2017/03// VL - 11 IS - 1 SP - 5 EP - 22 CY - US PB - Sage Publications SN - 1555-3434 AD - Patterson, Robert Earl, Air Force Research Laboratory, Human Analyst Augmentation Branch, 711 Human Performance Wing, Wright-Patterson AFB, OH, US, 45433 N1 - Accession Number: 2017-05521-002. Partial author list: First Author & Affiliation: Patterson, Robert Earl; Air Force Research Laboratory, Wright-Patterson AFB, OH, US. Release Date: 20170227. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cognition; Decision Making; Intuition; Reasoning; Dual Process Models. Minor Descriptor: Meaning. Classification: Human Factors Engineering (4010). Population: Human (10). Page Count: 18. Issue Publication Date: Mar, 2017. AB - In the naturalistic decision-making literature, intuitive cognition is at the heart of a pattern recognition–based decision model called the recognition-primed decision model. Given the importance of intuitive cognition in naturalistic decision-making theory, we explore the question of what makes intuitive cognition effective for decision making and, in so doing, present an extended empirical and theoretical foundation for the intuitive component in naturalistic decision making. We theorize that intuitive cognition is effective because it (1) possesses a capability for grounded, situational meaning making (sign interpretation); (2) is operative over extended work intervals involving interruptions; and (3) is instrumental in handling situated complexities of everyday living. Other characteristics of intuitive cognition and its foundations are discussed. We propose that intuitive cognition represents the core of cognition—grounded, situational meaning making—whereas analytical cognition represents a form of an intellectual exoskeleton that provides added capabilities (e.g., working memory). (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - intuitive cognition KW - meaning making KW - sense-making KW - reasoning KW - dual-process model KW - 2017 KW - Cognition KW - Decision Making KW - Intuition KW - Reasoning KW - Dual Process Models KW - Meaning KW - 2017 DO - 10.1177/1555343416686476 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2017-05521-002&site=ehost-live&scope=site UR - Robert.Patterson.22@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2017-07961-001 AN - 2017-07961-001 AU - Walsh, Matthew M. AU - Gunzelmann, Glenn AU - Dongen, Hans P. A. T1 - Computational cognitive modeling of the temporal dynamics of fatigue from sleep loss. JF - Psychonomic Bulletin & Review JO - Psychonomic Bulletin & Review JA - Psychon Bull Rev Y1 - 2017/02/16/ CY - Germany PB - Springer SN - 1069-9384 AD - Walsh, Matthew M., TiER1 Performance Solutions, Covington, KY, US N1 - Accession Number: 2017-07961-001. PMID: 28210999 Other Journal Title: Bulletin of the Psychonomic Society. Partial author list: First Author & Affiliation: Walsh, Matthew M.; TiER1 Performance Solutions, Covington, KY, US. Other Publishers: Psychonomic Society. Release Date: 20170223. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Language: English. Major Descriptor: No terms assigned. Classification: Human Experimental Psychology (2300). Copyright Statement: Psychonomic Society, Inc. 2017. AB - Computational models have become common tools in psychology. They provide quantitative instantiations of theories that seek to explain the functioning of the human mind. In this paper, we focus on identifying deep theoretical similarities between two very different models. Both models are concerned with how fatigue from sleep loss impacts cognitive processing. The first is based on the diffusion model and posits that fatigue decreases the drift rate of the diffusion process. The second is based on the Adaptive Control of Thought – Rational (ACT-R) cognitive architecture and posits that fatigue decreases the utility of candidate actions leading to microlapses in cognitive processing. A biomathematical model of fatigue is used to control drift rate in the first account and utility in the second. We investigated the predicted response time distributions of these two integrated computational cognitive models for performance on a psychomotor vigilance test under conditions of total sleep deprivation, simulated shift work, and sustained sleep restriction. The models generated equivalent predictions of response time distributions with excellent goodness-of-fit to the human data. More importantly, although the accounts involve different modeling approaches and levels of abstraction, they represent the effects of fatigue in a functionally equivalent way: in both, fatigue decreases the signal-to-noise ratio in decision processes and decreases response inhibition. This convergence suggests that sleep loss impairs psychomotor vigilance performance through degradation of the quality of cognitive processing, which provides a foundation for systematic investigation of the effects of sleep loss on other aspects of cognition. Our findings illustrate the value of treating different modeling formalisms as vehicles for discovery. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - ACT-R KW - Biomathematical fatigue models KW - Cognitive architecture KW - Diffusion model KW - Leaky accumulator KW - Local sleep KW - Psychomotor vigilance test (PVT) KW - 2017 KW - No terms assigned KW - 2017 DO - 10.3758/s13423-017-1243-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2017-07961-001&site=ehost-live&scope=site UR - mmw188@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Rao, S.I. AU - Varvenne, C. AU - Woodward, C. AU - Parthasarathy, T.A. AU - Miracle, D. AU - Senkov, O.N. AU - Curtin, W.A. T1 - Atomistic simulations of dislocations in a model BCC multicomponent concentrated solid solution alloy. JO - Acta Materialia JF - Acta Materialia Y1 - 2017/02/15/ VL - 125 M3 - Article SP - 311 EP - 320 SN - 13596454 AB - Molecular statics and molecular dynamics simulations are presented for the structure and glide motion of a/2〈111〉 dislocations in a randomly-distributed model-BCC Co 16.67 Fe 36.67 Ni 16.67 Ti 30 alloy. Core structure variations along an individual dislocation line are found for a/2〈111〉 screw and edge dislocations. One reason for the core structure variations is the local variation in composition along the dislocation line. Calculated unstable stacking fault energies on the (110) plane as a function of composition vary significantly, consistent with this assessment. Molecular dynamics simulations of the critical glide stress as a function of temperature show significant strengthening, and much shallower temperature dependence of the strengthening, as compared to pure BCC Fe as well as a reference mean-field BCC alloy material of the same overall composition, lattice and elastic constants as the target alloy. Interpretation of the strength versus temperature in terms of an effective kink-pair activation model shows the random alloy to have a much larger activation energy than the mean-field alloy or BCC Fe. This is interpreted as due to the core structure variations along the dislocation line that are often unfavorable for glide in the direction of the load. The configuration of the gliding dislocation is wavy, and significant debris is left behind, demonstrating the role of local composition and core structure in creating kink pinning (super jogs) and/or deflection of the glide plane of the dislocation. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIMULATION methods & models KW - DISLOCATIONS in crystals KW - MOLECULAR dynamics -- Simulation methods KW - BODY-centered cubic metals KW - SOLID solutions KW - Atomistic simulations KW - BCC crystal KW - Concentrated multicomponent solid solution alloy KW - Dislocations N1 - Accession Number: 121051006; Rao, S.I. 1,2; Email Address: satish.rao@epfl.ch Varvenne, C. 2,3 Woodward, C. 4 Parthasarathy, T.A. 1 Miracle, D. 4 Senkov, O.N. 1 Curtin, W.A. 2; Affiliation: 1: UES Inc, 4401 Dayton-Xenia Road, Dayton, OH, 45432, USA 2: Institute of Mechanical Engineering, EPFL, Lausanne, CH-1015, Switzerland 3: CINaM, UMR 7325 CNRS – Aix-Marseille Univ, F-13288, Marseille, France 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH, 45433, USA; Source Info: Feb2017, Vol. 125, p311; Subject Term: SIMULATION methods & models; Subject Term: DISLOCATIONS in crystals; Subject Term: MOLECULAR dynamics -- Simulation methods; Subject Term: BODY-centered cubic metals; Subject Term: SOLID solutions; Author-Supplied Keyword: Atomistic simulations; Author-Supplied Keyword: BCC crystal; Author-Supplied Keyword: Concentrated multicomponent solid solution alloy; Author-Supplied Keyword: Dislocations; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.actamat.2016.12.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121051006&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Moller, James C. AU - Kedziora, Gary S. AU - Barr, Stephen A. AU - Breitzman, Timothy D. AU - Berry, Rajiv J. T1 - Atomistic prediction of plane stress behavior of glassy thermosets. JO - Computational Materials Science JF - Computational Materials Science Y1 - 2017/02/15/ VL - 128 M3 - Article SP - 257 EP - 277 SN - 09270256 AB - When any covalent bond energy reached a threshold indicative of incipient bond scission, the simulation was stopped. This method was used to examine the responses of three highly-crosslinked epoxy systems. Systems were large enough to include 110 to 480 crosslink sites. Both elastic and yield properties show good agreement with the experiments of others. Continuum yield theories commonly applied to polymers are compared with the data. A Drucker-Prager pressure-dependent yield function applied best in the second and third quadrants of the σ 1 σ 2 domain. In the first quadrant, however, data more closely match a normal-stress-yielding criterion. In biaxial tension and simple tension, plastic behavior and large growth in nano-porosity were observed. Ductility was lowest in simple tension and biaxial compression. In simple tension, the bonds at crosslink sites and in ether linkages were the most highly strained whereas carbon-carbon backbone bonds between phenyl groups were highly strained in other cases. When system energy at imminent bond rupture was divided on a per-atom basis, consistency with Peterlin’s theory for molecular rupture was found. [ABSTRACT FROM AUTHOR] AB - Copyright of Computational Materials Science is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOSETTING plastics KW - EPOXY compounds KW - MOLECULAR dynamics KW - DENSITY functional theory KW - PHENYL group KW - Atomistic simulation KW - Glassy thermosets KW - Plane stress N1 - Accession Number: 120447153; Moller, James C. 1; Email Address: mollerjc@miamioh.edu Kedziora, Gary S. 2 Barr, Stephen A. 3 Breitzman, Timothy D. 3 Berry, Rajiv J. 3; Affiliation: 1: Miami University, Department of Mechanical and Manufacturing Engineering, Oxford, OH 45056, United States 2: Engility Corporation, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, United States 3: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB, OH 45433, United States; Source Info: Feb2017, Vol. 128, p257; Subject Term: THERMOSETTING plastics; Subject Term: EPOXY compounds; Subject Term: MOLECULAR dynamics; Subject Term: DENSITY functional theory; Subject Term: PHENYL group; Author-Supplied Keyword: Atomistic simulation; Author-Supplied Keyword: Glassy thermosets; Author-Supplied Keyword: Plane stress; Number of Pages: 21p; Document Type: Article L3 - 10.1016/j.commatsci.2016.11.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120447153&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Look, David C. AU - Leach, Jacob H. AU - Metzger, Robert T1 - Photo-Hall-effect study of excitation and recombination in Fe-doped GaN. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2017/02/14/ VL - 121 IS - 6 M3 - Article SP - 1 EP - 9 SN - 00218979 AB - The photo-Hall-effect was applied to the study of electron dynamics in semi-insulating Fe-doped GaN. High-powered light-emitting diodes of wavelengths k = 940, 536, 449, 402, and 365 nm were used to excite steady-state free-electron volume concentrations Dn = 105 - 108cm-3, depending on k and intensity I0. Electron lifetime s was determined from the energy E dependence of the excited sheet electron concentration Dns through the relationship Dns = I0sA(E), where the absorbance A(E) is a known function of sample thickness d and absorption coefficient a, and the energy dependence of a is taken from a theory of deep-center photoionization. The major sample impurities were Fe, Si, and C, with [Fe] ⪢ [Si] and [C]. Fitted lifetimes s ranged from 15 to 170 ps, depending on [Fe]. It was found that Dns ∞ I0 for [Si]>[C] and ∞ I01/2 for [Si] < [C]; the latter dependence arises possibly from self-compensation of neutral C impurities by N-vacancy donors. For [Si] > [C], some of the neutral Fe3+ is converted to Fe2+ with ground state Fe2+(5E) and excited state Fe2+(5T2); a fit of n vs. temperature T over the range of 290-325K in the dark establishes E5E with respect to the conduction band: ECB - E5E = 0.564 eV-b5ET, where b5E = 3.6 × 10-4 eV/K. At room temperature, 294K, ECB - E5E = 0.46 eV and ECB - E5T2 = 0.07 eV. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HALL effect KW - ABSORBANCE scale (Spectroscopy) KW - ABSORPTION spectra KW - ELECTRONIC excitation KW - EXCITON theory KW - SEMICONDUCTOR doping N1 - Accession Number: 121303874; Look, David C. 1,2,3 Leach, Jacob H. 4 Metzger, Robert 4; Affiliation: 1: Semiconductor Research Center, Wright State University, Dayton, Ohio 45435, USA 2: Air Force Research Laboratory Sensors Directorate, Wright-Patterson AFB, Ohio 45433, USA 3: Wyle Laboratories, Inc., 2601 Mission Point Blvd., Dayton, Ohio 45431, USA 4: Kyma Technologies Inc., 8829 Midway West Road, Raleigh, North Carolina 27617, USA; Source Info: 2017, Vol. 121 Issue 6, p1; Subject Term: HALL effect; Subject Term: ABSORBANCE scale (Spectroscopy); Subject Term: ABSORPTION spectra; Subject Term: ELECTRONIC excitation; Subject Term: EXCITON theory; Subject Term: SEMICONDUCTOR doping; Number of Pages: 9p; Illustrations: 1 Chart, 11 Graphs; Document Type: Article L3 - 10.1063/1.4975622 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121303874&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kumar, Sanat K. AU - Benicewicz, Brian C. AU - Vaia, Richard A. AU - Winey, Karen I. T1 - 50th Anniversary Perspective: Are Polymer Nanocomposites Practical for Applications? JO - Macromolecules JF - Macromolecules Y1 - 2017/02/14/ VL - 50 IS - 3 M3 - Article SP - 714 EP - 731 SN - 00249297 AB - The field of polymer nanocomposites has been at the forefront of research in the polymer community for the past few decades. Foundational work published in Macromolecules during this time has emphasized the physics and chemistry of the inclusion of nanofillers; remarkable early developments suggested that these materials would create a revolution in the plastics industry. After 25 years of innovative and groundbreaking research, PNCs have enabled many niche solutions. To complement the extensive literature currently available, we focus this Perspective on four case studies of PNCs applications: (i) filled rubbers, (ii) continuous fiber reinforced thermoset composites, (iii) membranes for gas separations, and (iv) dielectrics for capacitors and insulation. After presenting synthetic developments we discuss the application of polymer nanocomposites to each of these topic areas; successes will be noted, and we will finish each section by highlighting the various technological bottlenecks that need to be overcome to take these materials to full-scale practical application. By considering past successes and failures, we will emphasize the critical fundamental science needed to further expand the practical relevance of these materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERIC nanocomposites KW - MACROMOLECULES KW - SOLUTION (Chemistry) KW - RUBBER KW - POLYSTYRENE N1 - Accession Number: 121317236; Kumar, Sanat K. 1; Email Address: sk2794@columbia.edu Benicewicz, Brian C. 2 Vaia, Richard A. 3 Winey, Karen I. 4; Affiliation: 1: Department of Chemical Engineering, Columbia University, New York, New York 10027, United States 2: Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, United States 4: Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States; Source Info: Feb2017, Vol. 50 Issue 3, p714; Subject Term: POLYMERIC nanocomposites; Subject Term: MACROMOLECULES; Subject Term: SOLUTION (Chemistry); Subject Term: RUBBER; Subject Term: POLYSTYRENE; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 326291 Rubber Product Manufacturing for Mechanical Use; NAICS/Industry Codes: 326140 Polystyrene Foam Product Manufacturing; Number of Pages: 18p; Document Type: Article L3 - 10.1021/acs.macromol.6b02330 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121317236&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2017-06823-001 AN - 2017-06823-001 AU - Wisniewski, Matthew G. T1 - Predicting favorable and unfavorable consequences of perceptual learning: Worsening and the peak shift. JF - Experimental Brain Research JO - Experimental Brain Research JA - Exp Brain Res Y1 - 2017/02/11/ CY - Germany PB - Springer SN - 0014-4819 SN - 1432-1106 AD - Wisniewski, Matthew G., U.S. Air Force Research Laboratory, Bldg. 441, Area B, Wright-Patterson Air Force Base, Dayton, OH, US N1 - Accession Number: 2017-06823-001. PMID: 28190080 Partial author list: First Author & Affiliation: Wisniewski, Matthew G.; U.S. Air Force Research Laboratory, Dayton, OH, US. Release Date: 20170216. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Language: English. Major Descriptor: No terms assigned. Classification: Physiological Psychology & Neuroscience (2500). Publication History: Accepted Date: Dec 23, 2016; First Submitted Date: Jul 15, 2016. Copyright Statement: Springer-Verlag Berlin Heidelberg. 2017. AB - Discrimination learning can cause improved and worsened ability to perceive differences. This subsequently affects how stimuli are associated with meanings and behaviors. Here, human listeners were trained with frequency-modulated (FM) tonal sweeps (500–1000 Hz) in a paradigm where one FM rate (8.29 octaves per second) required a ‘Target’ response, while a rate either slower (5.76 octaves per second) or faster (11.94 octaves per second) required a ‘Non-Target’ response. Training led to a shift in ‘Target’ responding along the FM rate dimension away from the ‘Target’ in a direction opposite the trained ‘Non-Target’. This peak shift was paralleled by an asymmetry in acuity along the FM rate dimension in an untrained ABX task (a.k.a. match-to-sample). Performance improved relative to pre-training on trials where the ‘Target’ was contrasted with stimuli nearer the trained ‘Non-Target’. Performance worsened on trials containing stimuli displaced along the FM dimension further from the trained ‘Non-Target’. A connectionist model of perceptual learning containing non-associative representational modification and associative-based task-specific reweighting was able to simulate behavior. Simulations generated novel testable predictions regarding peak shift and worsening as a result of discrimination learning. Data have theoretical and practical consequences for predicting trends in the generalization of learned behaviors and modifiable perceptual acuities. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - Transfer KW - Connectionism KW - Discrimination learning KW - Self-organizing map (SOM) KW - Negative generalization KW - 2017 KW - No terms assigned KW - 2017 DO - 10.1007/s00221-016-4866-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2017-06823-001&site=ehost-live&scope=site UR - matt.g.wisniewski@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Tiley, J.S. AU - Kim, S.L. AU - Parthasarathy, T.A. AU - Loughnane, G.T. AU - Kublik, R. AU - Salem, A.A. T1 - Quantifying the effect of microstructure variability on the yield strength predictions of Ni-base superalloys. JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2017/02/08/ VL - 685 M3 - Article SP - 178 EP - 186 SN - 09215093 AB - Physics-based models for predicting the mechanical behavior of Ni-based superalloys as a function of microstructure features require the use of microstructure data for calibration and verification. Accurate representation of the heterogeneity of microstructure features requires accurate selection of the representative microstructure data size (i.e. image size). Thus, this work is carried out to address the influence of microstructure data size on the accuracy of a discrete dislocation dynamic model in predicting the critical resolved share stress (CRSS) of IN100. Microstructure features from backscattered electron images were extracted using image processing techniques. Single point statistics (e.g. area fraction, precipitate size, and distance between γ` particles) and higher order statistics using two-point correlations were calculated from segmented 2-D images. Modified Bhattacharyya Coefficient analysis techniques were employed to calculate three-dimensional particle size distributions. Results indicate a significant influence of the microstructure data size on the calculated CRSS. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STEREOLOGY KW - MICROSTRUCTURE KW - HEAT resistant alloys KW - HETEROGENEITY KW - HOMOGENEITY KW - Modified Bhattacharyya coefficient analysis KW - Ni-base superalloys KW - Yield strength predictions N1 - Accession Number: 120952707; Tiley, J.S. 1 Kim, S.L. 2 Parthasarathy, T.A. 2 Loughnane, G.T. 3 Kublik, R. 4 Salem, A.A. 4; Affiliation: 1: Air Force Research Laboratory, Wright Patterson AFB, OH 45433, United States 2: UES, Inc., Wright Patterson AFB, OH 45433, United States 3: Wright State University, Dayton, OH 45435, United States 4: Materials Resources LLC, Dayton, OH 45402, United States; Source Info: Feb2017, Vol. 685, p178; Subject Term: STEREOLOGY; Subject Term: MICROSTRUCTURE; Subject Term: HEAT resistant alloys; Subject Term: HETEROGENEITY; Subject Term: HOMOGENEITY; Author-Supplied Keyword: Modified Bhattacharyya coefficient analysis; Author-Supplied Keyword: Ni-base superalloys; Author-Supplied Keyword: Yield strength predictions; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.msea.2016.12.068 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120952707&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lakebrink, Matthew T. AU - Paredes, Pedro AU - Borg, Matthew P. T1 - Toward robust prediction of crossflow-wave instability in hypersonic boundary layers. JO - Computers & Fluids JF - Computers & Fluids Y1 - 2017/02/02/ VL - 144 M3 - Article SP - 1 EP - 9 SN - 00457930 AB - Traveling and stationary crossflow-wave instabilities in a laminar Mach 6 boundary layer are investigated on a 38.1% scale model of the Fifth Hypersonic International Flight Research Experiment (HIFiRE-5) elliptic cone at zero angle of attack and yaw. The Langley Stability and Transition Analysis Code (LASTRAC) was used to analyze the crossflow dominated boundary layer in the mid-span region near the downstream end of the model. Disturbance growth rates, wave angles, and phase speeds are computed with LASTRAC using quasi-parallel Linear Stability Theory (LST), Linear Parabolized StabilityEquations (LPSE), and two-plane or surface marching LPSE (2pLPSE). The predicted wave angles and phase speeds are validated using experimental data, and are found to be in better agreement than previous computations. Further numerical analysis is conducted using the Spatial BiGlobal technique (SBG), which simultaneously accounts for wall-normal and spanwise gradients in the mean boundary layer at a particular axial station. For the first time in the literature, a comparison is made between crossflow wave growth rates computed using LST, LPSE, and 2pLPSE and those computed using SBG, accounting for curvature and geometric divergence of the elliptic cone. The agreement between LST, LPSE, and SBG is fair at best, but excellent agreement is realized between 2pLPSE and SBG. This result constitutes a co-verification of the LASTRAC and SBG stability codes, and provides evidence that 2pLPSE accurately models the physics of the traveling-crossflow instability. [ABSTRACT FROM AUTHOR] AB - Copyright of Computers & Fluids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ROBUST statistics KW - STANDING waves KW - BOUNDARY layer (Aerodynamics) KW - CROSS-flow (Aerodynamics) KW - SQUALL lines KW - HYPERSONIC aerodynamics KW - LAMINAR flow KW - Aerodynamics KW - Boundary layer transition KW - Crossflow waves KW - Hypersonic KW - Stability analysis N1 - Accession Number: 120408849; Lakebrink, Matthew T. 1; Email Address: matthew.t.lakebrink@boeing.com Paredes, Pedro 2 Borg, Matthew P. 3; Affiliation: 1: Boeing Research and Technology, Saint Louis, MO 63042, USA 2: School of Aeronautics, Universidad Politécnica de Madrid, Madrid 28040, Spain 3: Air Force Research Laboratory, WPAFB, OH 45433, USA; Source Info: Feb2017, Vol. 144, p1; Subject Term: ROBUST statistics; Subject Term: STANDING waves; Subject Term: BOUNDARY layer (Aerodynamics); Subject Term: CROSS-flow (Aerodynamics); Subject Term: SQUALL lines; Subject Term: HYPERSONIC aerodynamics; Subject Term: LAMINAR flow; Author-Supplied Keyword: Aerodynamics; Author-Supplied Keyword: Boundary layer transition; Author-Supplied Keyword: Crossflow waves; Author-Supplied Keyword: Hypersonic; Author-Supplied Keyword: Stability analysis; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.compfluid.2016.11.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120408849&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sajith Vandana AU - Vidya Kochat AU - Jonghoon Lee AU - Vikas Varshney AU - Sadegh Yazdi AU - Jianfeng Shen AU - Suppanat Kosolwattana AU - Soumya Vinod AU - Robert Vajtai AU - Ajit K Roy AU - Chandra Sekhar Tiwary AU - P M Ajayan T1 - 2D Heterostructure coatings of hBN-MoS2 layers for corrosion resistance. JO - Journal of Physics: D Applied Physics JF - Journal of Physics: D Applied Physics Y1 - 2017/02/02/ VL - 50 IS - 4 M3 - Article SP - 1 EP - 1 SN - 00223727 AB - Heterostructures of atomically thin 2D materials could have improved physical, mechanical and chemical properties as compared to its individual components. Here we report, the effect of heterostructure coatings of hBN and MoS2 on the corrosion behavior as compared to coatings employing the individual 2D layer compositions. The poor corrosion resistance of MoS2 (widely used as wear resistant coating) can be improved by incorporating hBN sheets. Depending on the atomic stacking of the 2D sheets, we can further engineer the corrosion resistance properties of these coatings. A detailed spectroscopy and microscopy analysis has been used to characterize the different combinations of layered coatings. Detailed DFT based calculation reveals that the effect on the electrical properties due to atomic stacking is one of the major reasons for the improvement seen in corrosion resistance. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: D Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLYBDENUM disulfide KW - HETEROSTRUCTURES KW - CORROSION resistance N1 - Accession Number: 120597677; Sajith Vandana 1,2 Vidya Kochat 1 Jonghoon Lee 3,4 Vikas Varshney 3,4 Sadegh Yazdi 1 Jianfeng Shen 1,5 Suppanat Kosolwattana 1 Soumya Vinod 1 Robert Vajtai 1 Ajit K Roy 3; Email Address: ajit.roy@us.af.mil Chandra Sekhar Tiwary 1; Email Address: cst.iisc@gmail.com P M Ajayan 1; Email Address: ajayan@rice.edu; Affiliation: 1: Materials Science and Nanoengineering, Rice University, Houston, TX 77005, USA 2: School of Nano Science and Technology, National Institute of Technology, Calicut, Kerala, India 3: Nanoelectronics Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 4: Universal Technology Corporation, Dayton, OH 45432, USA 5: Institute of Special Materials and Technology, Fudan University, Shanghai, P. R. China; Source Info: 2/2/2017, Vol. 50 Issue 4, p1; Subject Term: MOLYBDENUM disulfide; Subject Term: HETEROSTRUCTURES; Subject Term: CORROSION resistance; Number of Pages: 1p; Document Type: Article L3 - 10.1088/1361-6463/aa5001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120597677&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hipp, Kyle D. AU - Walker, Michael M. AU - Benton, Stuart I. AU - Bons, Jeffrey P. T1 - Control of Poststall Airfoil Using Leading-Edge Pulsed Jets. JO - AIAA Journal JF - AIAA Journal Y1 - 2017/02// VL - 55 IS - 2 M3 - Article SP - 365 EP - 376 SN - 00011452 AB - The performance of active flow control on a NACA 643-618 laminar airfoil at a poststall angle of attack of 20 deg is evaluated using discrete, wall-normal pulsed jets. The chord Reynolds number is 64,000, and actuation is implemented near the leading edge of the airfoil. For actuation periods equal to one convective period and two convective periods, the average lift coefficient increases monotonically as the actuation duty cycle is reduced, for a given blowing ratio. Flow reattachment is achieved following the termination of a short duration pulse, and the reattachment point propagates toward the trailing edge at a rate three times slower than the convective period of the flow. Extended jet off times can cause full separation to reoccur, should the reattachment point reach the trailing edge; however, optimal jet off times can cause suction pressure to extend over much of the airfoil chord. Higher duty cycle actuation results in a phase shift of the dynamics that appears to be commensurate with the duration of the jet. A disturbance initiated by the termination of the jet causes a delay in the redevelopment of the shear layer and the reattachment of the flow, prohibiting high lift values from being attained. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 121316401; Hipp, Kyle D. 1,2 Walker, Michael M. 1,2 Benton, Stuart I. 1,3 Bons, Jeffrey P. 1,4; Affiliation: 1: The Ohio State University, Columbus, Ohio 43235 2: Graduate Research Assistant, Department of Mechanical and Aerospace Engineering, 2300 West Case Road. Student Member AIAA 3: Currently, NRC Postdoctoral Fellow, Aerospace Systems Directorate, U.S. Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433. Member AIAA 4: Professor, Department of Mechanical and Aerospace Engineering, 2300 West Case Road. Associate Fellow AIAA; Source Info: Feb2017, Vol. 55 Issue 2, p365; Number of Pages: 12p; Document Type: Article L3 - 10.2514/1.J055223 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121316401&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bae, Ha-Rok AU - Daniel, Clark L. AU - Alyanak, Ed T1 - Sequential Subspace Robustness Assessment and Sensitivity Analysis. JO - AIAA Journal JF - AIAA Journal Y1 - 2017/02// VL - 55 IS - 2 M3 - Article SP - 610 EP - 623 SN - 00011452 AB - To avoid an overconservative design and to ensure desired performance in an optimal way, the product quality and robustness are considered in terms of the product-performance mean and variance. In this paper, to facilitate robust design exploration under uncertainty, a new sequential-subspace-robustness-assessment method is presented to assess not only the mean and variance of performance, but also their sensitivities with respect to design parameters. The proposed method is based on the computational framework that integrates the univariate revolving integration and surrogate modeling of univariate integral functions. The proposed framework enables consideration of bivariate-interaction effects approximately by the aggregation of multiple revolving integration terms in a partial set of bivariate subspaces. It is found that the proposed method provides better accuracy with comparable computational cost in assessing the statistical moments and sensitivities of product performance than existing methods, such as dimension-reduction method. Several numerical examples, including mathematical and structural problems, are presented to demonstrate the efficiency and accuracy of the method. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 121316420; Bae, Ha-Rok 1,2 Daniel, Clark L. 1,3 Alyanak, Ed 4,5; Affiliation: 1: Wright State University, Dayton, Ohio 45435 2: Assistant Professor, Department of Mechanical and Materials Engineering. Senior Member AIAA 3: Graduate Student, Department of Mechanical and Materials Engineering. Student Member AIAA 4: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 5: Aerospace Research Engineer. Member AIAA; Source Info: Feb2017, Vol. 55 Issue 2, p610; Number of Pages: 14p; Document Type: Article L3 - 10.2514/1.J055030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121316420&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Burns, Ross A. AU - Danehy, Paul M. AU - Halls, Benjamin R. AU - Naibo Jiang T1 - Femtosecond Laser Electronic Excitation Tagging Velocimetry in a Transonic, Cryogenic Wind Tunnel. JO - AIAA Journal JF - AIAA Journal Y1 - 2017/02// VL - 55 IS - 2 M3 - Article SP - 680 EP - 685 SN - 00011452 N1 - Accession Number: 121316427; Burns, Ross A. 1,2 Danehy, Paul M. 1,3 Halls, Benjamin R. 4,5 Naibo Jiang 4,6; Affiliation: 1: NASA Langley Research Center, Hampton, Virginia 23681 2: Research Engineer, National Institute of Aerospace. Member AIAA 3: Senior Researcher, Advanced Measurements and Data Systems Branch. Associate Fellow AIAA 4: Spectral Energies, LLC, Dayton, Ohio 45431 5: Research Engineer; currently Research Engineer, U.S. Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, OH 45433. Member AIAA 6: Research Scientist. Senior Member AIAA; Source Info: Feb2017, Vol. 55 Issue 2, p680; Number of Pages: 6p; Document Type: Article L3 - 10.2514/1.J055325 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121316427&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - ID - 120924769 T1 - Take My Breath Away. AU - Lyon, Regan F. Y1 - 2017/02// N1 - Accession Number: 120924769. Language: English. Entry Date: In Process. Revision Date: 20170201. Publication Type: editorial. Journal Subset: Allied Health; Biomedical; Peer Reviewed; USA. NLM UID: 8002646. SP - 253 EP - 254 JO - Annals of Emergency Medicine JF - Annals of Emergency Medicine JA - ANN EMERG MED VL - 69 IS - 2 CY - New York, New York PB - Elsevier Science SN - 0196-0644 AD - United States Air Force Emergency Department, Osan Air Base, Republic of Korea U2 - PMID: 28126122. DO - 10.1016/j.annemergmed.2016.07.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=120924769&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Stozhkov, Vladimir AU - Boginski, Vladimir AU - Prokopyev, Oleg AU - Pasiliao, Eduardo T1 - A simple greedy heuristic for linear assignment interdiction. JO - Annals of Operations Research JF - Annals of Operations Research Y1 - 2017/02// VL - 249 IS - 1/2 M3 - Article SP - 39 EP - 53 SN - 02545330 AB - We consider a bilevel extension of the classical linear assignment problem motivated by network interdiction applications. Specifically, given a bipartite graph with two different (namely, the leader's and the follower's) edge costs, the follower solves a linear assignment problem maximizing his/her own profit, whereas the leader is allowed to affect the follower's decisions by eliminating some of the vertices from the graph. The leader's objective is to minimize the total cost given by the cost of the interdiction actions plus the cost of the assignments made by the follower. The considered problem is strongly $${ NP}$$ -hard. First, we formulate this problem as a linear mixed integer program (MIP), which can be solved by commercial MIP solvers. More importantly, we also describe a greedy-based construction heuristic, which provides (under some mild conditions) an optimal solution for the case, where the leader's and the follower's edge costs are equal to one. Finally, we present the results of our computational experiments comparing the proposed heuristic against an MIP solver. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of Operations Research is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEURISTIC algorithms KW - BIPARTITE graphs KW - BILEVEL programming KW - MATHEMATICAL optimization KW - MIXED integer linear programming KW - Assignment interdiction KW - Bilevel programming KW - Linear assignment N1 - Accession Number: 121061376; Stozhkov, Vladimir 1; Email Address: vstozhkov@ufl.edu Boginski, Vladimir; Email Address: vb@ufl.edu Prokopyev, Oleg 2; Email Address: prokopyev@engr.pitt.edu Pasiliao, Eduardo 3; Email Address: pasiliao@eglin.af.mil; Affiliation: 1: Department of Industrial and Systems Engineering , University of Florida , 303 Weil Hall Gainesville 32611 USA 2: Department of Industrial Engineering , University of Pittsburgh , 1048 Benedum Hall Pittburgh 15261 USA 3: Munitions Directorate , Air Force Research Laboratory , 101 W. Eglin Blvd. Eglin AFB 32542 USA; Source Info: Feb2017, Vol. 249 Issue 1/2, p39; Subject Term: HEURISTIC algorithms; Subject Term: BIPARTITE graphs; Subject Term: BILEVEL programming; Subject Term: MATHEMATICAL optimization; Subject Term: MIXED integer linear programming; Author-Supplied Keyword: Assignment interdiction; Author-Supplied Keyword: Bilevel programming; Author-Supplied Keyword: Linear assignment; Number of Pages: 15p; Document Type: Article L3 - 10.1007/s10479-016-2118-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121061376&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, Zhouchun AU - Zheng, Qipeng AU - Pasiliao, Eduardo AU - Simmons, Daniel T1 - Exact algorithms on reliable routing problems under uncertain topology using aggregation techniques for exponentially many scenarios. JO - Annals of Operations Research JF - Annals of Operations Research Y1 - 2017/02// VL - 249 IS - 1/2 M3 - Article SP - 141 EP - 162 SN - 02545330 AB - Network routing problems are often modeled with the assumption that the network structure is deterministic, though they are often subject to uncertainty in many real-life scenarios. In this paper, we study the traveling salesman and the shortest path problems with uncertain topologies modeled by arc failures. We present the formulations that incorporate chance constraints to ensure reliability of the selected route considering all arc failure scenarios. Due to the computational complexity and large scales of these stochastic network optimization problems, we consider two cutting plane methods and a Benders decomposition algorithm to respectively solve them. We also consider to solve the reformulations of the problems obtained by taking the logarithm transformation of the chance constraints. Numerical experiments are performed to obtain results for comparisons among these proposed methods. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of Operations Research is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ROUTING algorithms KW - COMPUTATIONAL complexity KW - MATHEMATICAL optimization KW - DECOMPOSITION (Mathematics) KW - COMPUTER algorithms KW - Arc failures KW - Benders decomposition KW - Compact formulation KW - Reliable routing KW - Shortest path problem KW - Traveling salesman problem N1 - Accession Number: 121061374; Huang, Zhouchun 1; Email Address: Zhouchun.Huang@knights.ucf.edu Zheng, Qipeng 1; Email Address: Qipeng.Zheng@ucf.edu Pasiliao, Eduardo 2 Simmons, Daniel 3; Affiliation: 1: Department of Industrial Engineering and Management Systems , University of Central Florida , Orlando 32816 USA 2: Air Force Research Laboratory , 101 West Eglin Boulevard Eglin AFB 32542 USA 3: Department of Industrial and Management Systems Engineering , West Virginia University , Morgantown 26506 USA; Source Info: Feb2017, Vol. 249 Issue 1/2, p141; Subject Term: ROUTING algorithms; Subject Term: COMPUTATIONAL complexity; Subject Term: MATHEMATICAL optimization; Subject Term: DECOMPOSITION (Mathematics); Subject Term: COMPUTER algorithms; Author-Supplied Keyword: Arc failures; Author-Supplied Keyword: Benders decomposition; Author-Supplied Keyword: Compact formulation; Author-Supplied Keyword: Reliable routing; Author-Supplied Keyword: Shortest path problem; Author-Supplied Keyword: Traveling salesman problem; Number of Pages: 22p; Document Type: Article L3 - 10.1007/s10479-016-2244-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121061374&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wu, Xufei AU - Varshney, Vikas AU - Lee, Jonghoon AU - Pang, Yunsong AU - Roy, Ajit K. AU - Luo, Tengfei T1 - How to characterize thermal transport capability of 2D materials fairly? – Sheet thermal conductance and the choice of thickness. JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2017/02// VL - 669 M3 - Article SP - 233 EP - 237 SN - 00092614 AB - Thermal transport capability of monolayer 2D materials has been under constant spotlight. However, different definitions of thickness in literature have led to ambiguity towards predicting thermal conductivity values and thus in understanding the heat transfer capability of different monolayer 2D materials. We argue that the same thickness should be used and a ‘sheet thermal conductance’ should be defined as an intensive 2D material property when characterizing the heat transfer capability of 2D materials. When converting literature thermal conductivity values of monolayer materials to this new property, some new features that were not displayed when using different thicknesses show up. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL conductivity KW - THICKNESS measurement KW - PHYSICAL constants KW - HEAT transfer KW - MATERIALS -- Analysis N1 - Accession Number: 120671853; Wu, Xufei 1 Varshney, Vikas 2,3 Lee, Jonghoon 2,3 Pang, Yunsong 1 Roy, Ajit K. 2 Luo, Tengfei 1,4; Email Address: tluo@nd.edu; Affiliation: 1: Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, IN 46556, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, United States 3: Universal Technology Corporation, Dayton, OH 45342, United States 4: Center for Sustainable Energy at Notre Dame, Notre Dame, IN 46556, United States; Source Info: Feb2017, Vol. 669, p233; Subject Term: THERMAL conductivity; Subject Term: THICKNESS measurement; Subject Term: PHYSICAL constants; Subject Term: HEAT transfer; Subject Term: MATERIALS -- Analysis; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.cplett.2016.12.054 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120671853&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rankin, Brent A. AU - Richardson, Daniel R. AU - Caswell, Andrew W. AU - Naples, Andrew G. AU - Hoke, John L. AU - Schauer, Frederick R. T1 - Chemiluminescence imaging of an optically accessible non-premixed rotating detonation engine. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2017/02// VL - 176 M3 - Article SP - 12 EP - 22 SN - 00102180 AB - The detonations propagating through the annular channel of an optically accessible rotating detonation engine (RDE) operating on hydrogen–air are visualized using OH * chemiluminescence imaging. The images are useful for observing the instantaneous size and shape of the detonation structure, oblique shock wave, and possible presence of deflagration between the fuel-fill zone and expansion region containing detonation products. The detonation increases in height as the air flow rate is increased for low flow rates, experiences subtle changes for intermediate flow rates, and transitions from one to two waves for higher flow rates. The two detonation waves typically propagate in the same azimuthal direction. Counter-rotating waves resulting in detonation–detonation interactions are observed for some configurations with a reduced number of fuel injection jets. Time-dependent static pressure measurements show that acoustic interactions between the detonation channel and air plenum are important for low air flow rates and large air injection areas. The OH * chemiluminescence images, pressure, and wave speed measurements provide benchmark data that are useful for evaluating RDE models and simulations, improving fundamental understanding of the detonation structure in RDEs, and identifying critical design parameters that influence RDE operation and performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMILUMINESCENCE KW - LUMINESCENCE KW - LUCIGENIN KW - AIR flow KW - FUEL pumps KW - Chemiluminescence imaging KW - Rotating detonation engine N1 - Accession Number: 121050709; Rankin, Brent A. 1; Email Address: brent.a.rankin@gmail.com Richardson, Daniel R. 2 Caswell, Andrew W. 1 Naples, Andrew G. 3 Hoke, John L. 3 Schauer, Frederick R. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, 1790 Loop Road, OH 45433, USA 2: Spectral Energies, Beavercreek, OH 45431, USA 3: Innovative Scientific Solutions Inc., Dayton, OH 45459, USA; Source Info: Feb2017, Vol. 176, p12; Subject Term: CHEMILUMINESCENCE; Subject Term: LUMINESCENCE; Subject Term: LUCIGENIN; Subject Term: AIR flow; Subject Term: FUEL pumps; Author-Supplied Keyword: Chemiluminescence imaging; Author-Supplied Keyword: Rotating detonation engine; NAICS/Industry Codes: 336310 Motor Vehicle Gasoline Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 336320 Motor Vehicle Electrical and Electronic Equipment Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.combustflame.2016.09.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121050709&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hajilou, Mohammadhadi AU - Ombrello, Timothy AU - Won, Sang Hee AU - Belmont, Erica T1 - Experimental and numerical characterization of freely propagating ozone-activated dimethyl ether cool flames. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2017/02// VL - 176 M3 - Article SP - 326 EP - 333 SN - 00102180 AB - Experimental flame characterization is necessary for the development and validation of chemical kinetics models. Low temperature oxidation produces a cool flame, which is a combustion phenomenon resulting from negative temperature coefficient (NTC) behavior. Kinematic stabilization of premixed, freely propagating, ozone-activated, cool flames of dimethyl ether (DME) has been investigated at sub-atmospheric pressure of 7.3 kPa using a laminar flat flame Hencken burner. This platform permits estimation of laminar propagation speed, as well as spatially-resolved temperature and species mole fractions along the burner axis. Stability mapping for a range of equivalence ratios ( ϕ ) was performed to determine the range of ozone concentrations for which a cool flame can be sustained. Based on the results of stability mapping, an ozone concentration of 6.1% in oxygen was chosen to investigate the characteristics of DME cool flames over a range of equivalence ratios from ϕ = 0.4 to 1.4. Two distinct cool flame stabilization modes were observed in experiments: a burner-stabilized mode at low reactant flow rates, and a freely propagating mode at higher flow rates. From the transition between the two modes, cool flame propagation speeds from ϕ = 0.4 to 1.4 were determined. Flame temperatures were measured at these equivalence ratios, with maximum temperatures decreasing from 885 K at ϕ = 0.4 to 779 K at ϕ = 1.4. A single equivalence ratio of ϕ = 0.6 was chosen for detailed investigation of the flame structure, including spatial measurements of temperature and species as a function of height above the burner. Experimental results were compared to numerical simulations of a ϕ = 0.6 cool flame. Experimental propagation speed was found to be within 25% of the numerical value, and significant agreement between experimental and numerical species profiles was observed. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METHYL ether KW - OZONE generators KW - ETHANES KW - ELECTRIC machines KW - AIR pollution KW - Cool flame KW - Dimethyl ether KW - Freely propagating KW - Laminar flame KW - Low temperature oxidation KW - Negative temperature coefficient N1 - Accession Number: 121050749; Hajilou, Mohammadhadi 1 Ombrello, Timothy 2 Won, Sang Hee 3 Belmont, Erica 1; Email Address: ebelmont@uwyo.edu; Affiliation: 1: Department of Mechanical Engineering, University of Wyoming, Laramie, WY, USA 2: Aerospace Systems Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 3: Department of Mechanical Engineering, University of South Carolina, Columbia, SC, USA; Source Info: Feb2017, Vol. 176, p326; Subject Term: METHYL ether; Subject Term: OZONE generators; Subject Term: ETHANES; Subject Term: ELECTRIC machines; Subject Term: AIR pollution; Author-Supplied Keyword: Cool flame; Author-Supplied Keyword: Dimethyl ether; Author-Supplied Keyword: Freely propagating; Author-Supplied Keyword: Laminar flame; Author-Supplied Keyword: Low temperature oxidation; Author-Supplied Keyword: Negative temperature coefficient; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.combustflame.2016.11.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121050749&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sabard, Jérémy AU - Catoire, Laurent AU - Chambreau, Steven D. AU - Vaghjiani, Ghanshyam L. T1 - Method for predicting hypergolic mixture flammability limits: Application for non-ionic liquid based systems. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2017/02// VL - 176 M3 - Article SP - 547 EP - 553 SN - 00102180 AB - A numerical method is demonstrated in which a simple flame temperature criterion of 2700 K is used to map out flammability diagrams as a function of total mixture pressure and equivalence ratio in the hypergolic system, MMH/NTO/He. The computed results are in good agreement with experimentally determined ignition diagrams for MMH/NTO/He. The method is used to predict the lower and upper hypergolicity limits of other mixtures known to be hypergolic at 298 K and 1 atm. Comparisons between available experimental data (mixing ratios) and calculated limits lead to the conclusion that the present numerical method may allow the screening of other fuel/oxidant systems potentially of interest for spacecraft propulsion as well as for the determination of the range of mixing ratios able to ensure auto-ignitibility (hypergolicity) in combustion devices. In the safety field, the same method allows for the rapid assessment of hazards in terms of hypergolicity. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMBUSTION KW - FLAMMABILITY KW - CONDENSED matter -- Thermal properties KW - FLAMMABLE limits KW - IONIC liquids KW - Flammability KW - Hypergolicity KW - Ignition KW - Limits N1 - Accession Number: 121050756; Sabard, Jérémy 1 Catoire, Laurent 1; Email Address: laurent.catoire@ensta-paristech.fr Chambreau, Steven D. 2 Vaghjiani, Ghanshyam L. 3; Affiliation: 1: Department of Chemical Engineering, UCP, ENSTA ParisTech, Université Paris-Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France 2: ERC Incorporated, AFRL/RQRP, 10 E. Saturn Blvd., Edwards AFB, CA 93524, USA 3: Air Force Research Laboratory, Propellants Branch, AFRL/RQRP, 10 E. Saturn Blvd., Edwards AFB, CA 93524, USA; Source Info: Feb2017, Vol. 176, p547; Subject Term: COMBUSTION; Subject Term: FLAMMABILITY; Subject Term: CONDENSED matter -- Thermal properties; Subject Term: FLAMMABLE limits; Subject Term: IONIC liquids; Author-Supplied Keyword: Flammability; Author-Supplied Keyword: Hypergolicity; Author-Supplied Keyword: Ignition; Author-Supplied Keyword: Limits; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.combustflame.2016.11.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121050756&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Berger, Matthew AU - Tagliasacchi, Andrea AU - Seversky, Lee M. AU - Alliez, Pierre AU - Guennebaud, Gaël AU - Levine, Joshua A. AU - Sharf, Andrei AU - Silva, Claudio T. T1 - A Survey of Surface Reconstruction from Point Clouds. JO - Computer Graphics Forum JF - Computer Graphics Forum Y1 - 2017/02// VL - 36 IS - 1 M3 - Article SP - 301 EP - 329 SN - 01677055 AB - The area of surface reconstruction has seen substantial progress in the past two decades. The traditional problem addressed by surface reconstruction is to recover the digital representation of a physical shape that has been scanned, where the scanned data contain a wide variety of defects. While much of the earlier work has been focused on reconstructing a piece-wise smooth representation of the original shape, recent work has taken on more specialized priors to address significantly challenging data imperfections, where the reconstruction can take on different representations-not necessarily the explicit geometry. We survey the field of surface reconstruction, and provide a categorization with respect to priors, data imperfections and reconstruction output. By considering a holistic view of surface reconstruction, we show a detailed characterization of the field, highlight similarities between diverse reconstruction techniques and provide directions for future work in surface reconstruction. [ABSTRACT FROM AUTHOR] AB - Copyright of Computer Graphics Forum is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE reconstruction KW - SHAPE analysis (Computational geometry) KW - GEOMETRIC approach KW - COMPUTER graphics KW - SHAPES KW - 3D acquisition KW - geometry processin KW - shape analysis KW - surface reconstruction N1 - Accession Number: 121530578; Berger, Matthew 1; Email Address: matthew.sh.berger@gmail.com Tagliasacchi, Andrea 2,3; Email Address: andrea.tagliasacchi@gmail.com Seversky, Lee M. 1 Alliez, Pierre 4; Email Address: pierre.alliez@inria.fr Guennebaud, Gaël 5; Email Address: gael.guennebaud@inria.fr Levine, Joshua A. 6; Email Address: levinej@clemson.edu Sharf, Andrei 7; Email Address: asharf@gmail.com Silva, Claudio T. 8; Email Address: csilva@nyu.edu; Affiliation: 1: Air Force Research Laboratory, Information Directorate, Rome, NY, USA 2: Ècole Polytechnique Fédérale de Lausanne (EPFL), Lausannne, Switzerland 3: University of Victoria, Victoria, Canada 4: Inria Sophia Antipolis-Méditerranée, Valbonne, France 5: Inria Bordeaux Sud-Ouest, Talence, France 6: Clemson University, Clemson, SC, USA 7: Ben-Gurion University, Beersheba, Israel 8: New York University, New York, NY, USA; Source Info: Feb2017, Vol. 36 Issue 1, p301; Subject Term: SURFACE reconstruction; Subject Term: SHAPE analysis (Computational geometry); Subject Term: GEOMETRIC approach; Subject Term: COMPUTER graphics; Subject Term: SHAPES; Author-Supplied Keyword: 3D acquisition; Author-Supplied Keyword: geometry processin; Author-Supplied Keyword: shape analysis; Author-Supplied Keyword: surface reconstruction; Number of Pages: 29p; Illustrations: 7 Color Photographs, 11 Diagrams, 1 Chart; Document Type: Article L3 - 10.1111/cgf.12802 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121530578&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Song, Kangwon AU - McGeary, Don AU - Pugh, Mary AU - Kazanis, William AU - Paniagua, Samantha Megan AU - Finley, Erin AU - Garcia, Ashley A. AU - Bebarta, Vikhyat AU - Carnahan, David AU - Potter, Jennifer Sharpe T1 - Opioid therapy misuse factors: A systematic review. JO - Drug & Alcohol Dependence JF - Drug & Alcohol Dependence Y1 - 2017/02// VL - 171 M3 - Article SP - e193 EP - e193 SN - 03768716 KW - OPIOID abuse KW - JOINT pain KW - RANDOMIZED controlled trials KW - SYSTEMATIC reviews (Medical research) KW - TREATMENT KW - RISK factors N1 - Accession Number: 120888672; Song, Kangwon 1,2 McGeary, Don 3 Pugh, Mary 4,5 Kazanis, William 3 Paniagua, Samantha Megan 3 Finley, Erin 4,6 Garcia, Ashley A. 3 Bebarta, Vikhyat 7 Carnahan, David 8,9 Potter, Jennifer Sharpe 3; Affiliation: 1: Pharmacotherapy Education & Research Center, University of Texas Health Sciences Center at Antonio, San Antonio, TX, United States 2: Pharmacy, South Texas Veterans Healthcare System, San Antonio, TX, United States 3: Psychiatry, UT Health Science Center, San Antonio, TX, United States 4: South Texas Veterans Healthcare System, San Antonio, TX, United States 5: Epidemiology & Biostatistics, University of Texas Health Sciences Center at San Antonio, San Antonio, TX, United States 6: Division of Clinical Epidemiololgy, University of Texas Health Sciences Center at San Antonio, San Antonio, TX, United States 7: San Antonio Military Medical Center, San Antonio, TX, United States 8: Defense Health Agency, San Antonio, TX, United States 9: United States Air Force Medical Support Agency, San Antonio, TX, United States; Source Info: Feb2017, Vol. 171, pe193; Subject Term: OPIOID abuse; Subject Term: JOINT pain; Subject Term: RANDOMIZED controlled trials; Subject Term: SYSTEMATIC reviews (Medical research); Subject Term: TREATMENT; Subject Term: RISK factors; Number of Pages: 1p; Document Type: Article L3 - 10.1016/j.drugalcdep.2016.08.529 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120888672&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 120888672 T1 - Opioid therapy misuse factors: A systematic review. AU - Song, Kangwon AU - McGeary, Don AU - Pugh, Mary AU - Kazanis, William AU - Paniagua, Samantha Megan AU - Finley, Erin AU - Garcia, Ashley A. AU - Bebarta, Vikhyat AU - Carnahan, David AU - Potter, Jennifer Sharpe Y1 - 2017/02// N1 - Accession Number: 120888672. Language: English. Entry Date: In Process. Revision Date: 20170126. Publication Type: Article. Journal Subset: Biomedical; Europe; Peer Reviewed; UK & Ireland. NLM UID: 7513587. SP - e193 EP - e193 JO - Drug & Alcohol Dependence JF - Drug & Alcohol Dependence JA - DRUG ALCOHOL DEPENDENCE VL - 171 PB - Elsevier Science SN - 0376-8716 AD - Pharmacotherapy Education & Research Center, University of Texas Health Sciences Center at Antonio, San Antonio, TX, United States AD - Pharmacy, South Texas Veterans Healthcare System, San Antonio, TX, United States AD - Psychiatry, UT Health Science Center, San Antonio, TX, United States AD - South Texas Veterans Healthcare System, San Antonio, TX, United States AD - Epidemiology & Biostatistics, University of Texas Health Sciences Center at San Antonio, San Antonio, TX, United States AD - Division of Clinical Epidemiololgy, University of Texas Health Sciences Center at San Antonio, San Antonio, TX, United States AD - San Antonio Military Medical Center, San Antonio, TX, United States AD - Defense Health Agency, San Antonio, TX, United States AD - United States Air Force Medical Support Agency, San Antonio, TX, United States DO - 10.1016/j.drugalcdep.2016.08.529 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=120888672&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Patterson, Robert Earl T1 - Intuitive Cognition and Models of Human-Automation Interaction. JO - Human Factors JF - Human Factors Y1 - 2017/02// VL - 59 IS - 1 M3 - Article SP - 101 EP - 115 SN - 00187208 AB - Objective: The aim of this study was to provide an analysis of the implications of the dominance of intuitive cognition in human reasoning and decision making for conceptualizing models and taxonomies of human-automation interaction, focusing on the Parasuraman et al. model and taxonomy.Background: Knowledge about how humans reason and make decisions, which has been shown to be largely intuitive, has implications for the design of future human-machine systems.Method: One hundred twenty articles and books cited in other works as well as those obtained from an Internet search were reviewed. Works were deemed eligible if they were published within the past 50 years and common to a given literature.Results: Analysis shows that intuitive cognition dominates human reasoning and decision making in all situations examined. The implications of the dominance of intuitive cognition for the Parasuraman et al. model and taxonomy are discussed. A taxonomy of human-automation interaction that incorporates intuitive cognition is suggested.Application: Understanding the ways in which human reasoning and decision making is intuitive can provide insight for future models and taxonomies of human-automation interaction. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Automation KW - Human-machine systems KW - Cognition KW - Decision making KW - Reasoning (Psychology) KW - decision making KW - human reasoning KW - human-computer interaction KW - intuitive cognition N1 - Accession Number: 121107635; Patterson, Robert Earl 1; Email Address: Robert.Patterson.22@us.af.mil; Affiliations: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio; Issue Info: Feb2017, Vol. 59 Issue 1, p101; Thesaurus Term: Automation; Subject Term: Human-machine systems; Subject Term: Cognition; Subject Term: Decision making; Subject Term: Reasoning (Psychology); Author-Supplied Keyword: decision making; Author-Supplied Keyword: human reasoning; Author-Supplied Keyword: human-computer interaction; Author-Supplied Keyword: intuitive cognition; Number of Pages: 15p; Document Type: Article L3 - 10.1177/0018720816659796 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=121107635&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 121107629 T1 - Between Two Worlds. AU - Hancock, Peter A. AU - Baldwin, Carryl L. AU - Warm, Joel S. AU - Szalma, James L. Y1 - 2017/02// N1 - Accession Number: 121107629. Language: English. Entry Date: In Process. Revision Date: 20170210. Publication Type: Article. Journal Subset: Biomedical; Peer Reviewed; USA. NLM UID: 0374660. SP - 28 EP - 34 JO - Human Factors JF - Human Factors JA - HUM FACTORS VL - 59 IS - 1 PB - Sage Publications Inc. AB - Objective: To provide an evaluative overview of the life and contributions of Raja Parasuraman.Background: From his earliest contributions in clarifying and explaining the problematic area of vigilance to his most recent interdisciplinary advances in understanding how genotype relates to behavior in complex technical environments, Raja Parasuraman was a giant of human factors and ergonomics. Our present exposition articulates and recounts his many contributions to our science and to science in general beyond the confines of our own discipline.Method: We use the history of scientific contributions, biographical analysis, and reported personal experience to accomplish our overall assessment of the man and his work.Results: We conclude that Parasuraman's contributions were unique, substantive, and seminal, and will continue to influence our science for many years to come.Application: This work will serve as a record for those to come who look to make significant contributions to the goals, aims, and aspirations that we set ourselves in human factors and ergonomics in seeking to improve the human condition. SN - 0018-7208 AD - University of Central Florida, Orlando, Florida AD - George Mason University, Fairfax, Virginia AD - Air Force Research Laboratory, WPAFB, University of Dayton Research Institute, Dayton, Ohio U2 - PMID: 28146677. DO - 10.1177/0018720816688604 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=121107629&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 121107631 T1 - Task Engagement and Attentional Resources. AU - Matthews, Gerald AU - Warm, Joel S. AU - Smith, Andrew P. Y1 - 2017/02// N1 - Accession Number: 121107631. Language: English. Entry Date: In Process. Revision Date: 20170210. Publication Type: Article. Journal Subset: Biomedical; Peer Reviewed; USA. NLM UID: 0374660. SP - 44 EP - 61 JO - Human Factors JF - Human Factors JA - HUM FACTORS VL - 59 IS - 1 PB - Sage Publications Inc. AB - Objective: Two studies tested multivariate models of relationships between subjective task engagement and vigilance. The second study included a stress factor (cold infection). Modeling tested relationships between latent factors for task engagement and vigilance, and the role of engagement in mediating effects of cold infection.Background: Raja Parasuraman's research on vigilance identified several key issues, including the roles of task factors, arousal processes, and individual differences, within the framework of resource theory. Task engagement is positively correlated with performance on various attentional tasks and may serve as a marker for resource availability.Method: In the first study, 229 participants performed simultaneous and successive vigilance tasks. In the second study, 204 participants performed a vigilance task and a variable-foreperiod simple reaction-time task on two separate days. On the second day, 96 participants performed while infected with a naturally occurring common cold. Task engagement was assessed in both studies.Results: In both studies, vigilance decrement in hit rate was observed, and task performance led to loss of task engagement. Cold infection also depressed both vigilance and engagement. Fitting structural equation models indicated that simultaneous and successive tasks should be represented by separate latent factors (Study 1), and task engagement fully mediated the impact of cold infection on vigilance but not reaction time (Study 2).Conclusions: Modeling individual differences in task engagement elucidates the role of resources in vigilance and underscores the relevance of Parasuraman's vision of the field.Application: Assessment of task engagement may support diagnostic monitoring of operators performing tasks requiring vigilance. SN - 0018-7208 AD - University of Central Florida, Orlando AD - Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio AD - Cardiff University, United Kingdom U2 - PMID: 28146681. DO - 10.1177/0018720816673782 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=121107631&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 121107632 T1 - The Neuroergonomics of Vigilance. AU - Funke, Matthew E. AU - Warm, Joel S. AU - Matthews, Gerald AU - Funke, Gregory J. AU - Chiu, Peter Y. AU - Shaw, Tyler H. AU - Greenlee, Eric T. Y1 - 2017/02// N1 - Accession Number: 121107632. Language: English. Entry Date: In Process. Revision Date: 20170210. Publication Type: Article. Journal Subset: Biomedical; Peer Reviewed; USA. NLM UID: 0374660. SP - 62 EP - 75 JO - Human Factors JF - Human Factors JA - HUM FACTORS VL - 59 IS - 1 PB - Sage Publications Inc. AB - Objective: The aim of this study was to examine the effects of uncertainty about where in the field of view critical signals for detection appear during a vigilance task (spatial uncertainty) on cerebral blood flow velocity (CBFV) and oculomotor fatigue.Background: Neuroergonomics is a dimension of human factors founded by Raja Parasuraman that studies brain functions underlying performance at work. Neuroergonomic studies have shown that observers in vigilance tasks lose information-processing resources over time and experience oculomotor fatigue as indexed by a temporal decline in CBFV and elevation in eye closure as reflected in the PERCLOS metric. Because spatial uncertainty increases an observer's need for visual scanning relative to a spatial certainty condition, it was anticipated that spatial uncertainty would result in a greater temporal decline in CBFV and increased eye closure in a vigilance session.Method: Observers performed a simulated unmanned aerial vehicle (UAV) control task wherein collision flight paths were the events to be detected. UAV images could appear at random in any one of five locations on the controller's display (spatial uncertainty) or only in a fixed location (spatial certainty).Results: Signal detection was poorer in the spatial-uncertain relative to the certain condition, and predictions regarding CBFV and eye closure were confirmed.Conclusion: Vigilance tasks involving spatial uncertainty are more neurophysiologically taxing than those in which spatial uncertainty is not a factor.Application: The neuroergonomic approach helps in understanding the effects of psychophysical factors in vigilance and to signify when performance aiding is needed. SN - 0018-7208 AD - Naval Medical Research Unit Dayton, Wright-Patterson Air Force Base, Ohio AD - Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio AD - University of Central Florida, Orlando, Florida AD - University of Cincinnati, Cincinnati, Ohio AD - George Mason University, Fairfax, Virginia AD - Texas Tech University, Lubbock U2 - PMID: 28146671. DO - 10.1177/0018720816683121 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=121107632&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 121107635 T1 - Intuitive Cognition and Models of Human-Automation Interaction. AU - Patterson, Robert Earl Y1 - 2017/02// N1 - Accession Number: 121107635. Language: English. Entry Date: In Process. Revision Date: 20170210. Publication Type: Article. Journal Subset: Biomedical; Peer Reviewed; USA. NLM UID: 0374660. SP - 101 EP - 115 JO - Human Factors JF - Human Factors JA - HUM FACTORS VL - 59 IS - 1 PB - Sage Publications Inc. AB - Objective: The aim of this study was to provide an analysis of the implications of the dominance of intuitive cognition in human reasoning and decision making for conceptualizing models and taxonomies of human-automation interaction, focusing on the Parasuraman et al. model and taxonomy.Background: Knowledge about how humans reason and make decisions, which has been shown to be largely intuitive, has implications for the design of future human-machine systems.Method: One hundred twenty articles and books cited in other works as well as those obtained from an Internet search were reviewed. Works were deemed eligible if they were published within the past 50 years and common to a given literature.Results: Analysis shows that intuitive cognition dominates human reasoning and decision making in all situations examined. The implications of the dominance of intuitive cognition for the Parasuraman et al. model and taxonomy are discussed. A taxonomy of human-automation interaction that incorporates intuitive cognition is suggested.Application: Understanding the ways in which human reasoning and decision making is intuitive can provide insight for future models and taxonomies of human-automation interaction. SN - 0018-7208 AD - Air Force Research Laboratory, Wright-Patterson AFB, Ohio U2 - PMID: 28146682. DO - 10.1177/0018720816659796 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=121107635&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Zhen Kan AU - Klotz, Justin R. AU - Shea, John M. AU - Doucette, Emily A. AU - Dixon, Warren E. T1 - Decentralized Rendezvous of Nonholonomic Robots With Sensing and Connectivity Constraints. JO - Journal of Dynamic Systems, Measurement, & Control JF - Journal of Dynamic Systems, Measurement, & Control Y1 - 2017/02// VL - 139 IS - 2 M3 - Article SP - 1 EP - 7 SN - 00220434 AB - A group of wheeled robots with nonholonomic constraints is considered to rendezvous at a common specified setpoint with a desired orientation while maintaining network connectivity and ensuring collision avoidance within the robots. Given communication and sensing constraints for each robot, only a subset of the robots are aware or informed of the global destination, and the remaining robots must move within the network connectivity constraint so that the informed robots (IRs) can guide the group to the goal. The mobile robots are also required to avoid collisions with each other outside a neighborhood of the common rendezvous point. To achieve the rendezvous control objective, decentralized time-varying controllers are developed based on a navigation function framework to steer the robots to perform rendezvous while preserving network connectivity and ensuring collision avoidance. Only local sensing feedback, which includes position feedback from immediate neighbors and absolute orientation measurement, is used to navigate the robots and enables radio silence during navigation. Simulation results demonstrate the performance of the developed approach. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Dynamic Systems, Measurement, & Control is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Collisions (Physics) KW - Control equipment KW - Navigation KW - Robots N1 - Accession Number: 120330544; Zhen Kan 1; Email Address: zhen-kan@uiowa.edu Klotz, Justin R. 2; Email Address: jklotz@ufl.edu Shea, John M. 3; Email Address: jshea@ece.ufl.edu Doucette, Emily A. 4; Email Address: emily.doucette@eglin.af.mil Dixon, Warren E. 2; Email Address: wdixon@ufl.edu; Affiliation: 1: Department of Mechanical and Industrial Engineering, The University of Iowa, Iowa City, IA 52242 2: Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL 32611 3: Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL 32611 4: Munitions Directorate, Air Force Research Laboratory, Eglin Air Force Base, Valparaiso, FL 32542; Source Info: Feb2017, Vol. 139 Issue 2, p1; Author-Supplied Keyword: Collisions (Physics); Author-Supplied Keyword: Control equipment; Author-Supplied Keyword: Navigation; Author-Supplied Keyword: Robots; Number of Pages: 7p; Document Type: Article L3 - 10.1115/1.4034745 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120330544&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - A V Diebold AU - A M Watson AU - S Holcomb AU - C Tabor AU - D Mast AU - M D Dickey AU - J Heikenfeld T1 - Electrowetting-actuated liquid metal for RF applications. JO - Journal of Micromechanics & Microengineering JF - Journal of Micromechanics & Microengineering Y1 - 2017/02// VL - 27 IS - 2 M3 - Article SP - 1 EP - 1 SN - 13616439 AB - Electrowetting is well-established as a fluid manipulation technique in such areas as lab-on-a-chip, visible light optics, and displays, yet has seen far less implementation in the field of radio-frequency (RF) electronics and electromagnetics. This is primarily due to a lack of appropriate materials selection and control in these devices. Low loss RF conductive fluids such as room temperature liquid metals (i.e. Hg, EGaIn, Galinstan) are by far the leading choice of active material due to their superior electrical properties but require high actuating voltages due to their inherently high surface tensions (>400 mN m−1) which often lead to dielectric breakdown. While the toxicity of Hg encourages the pursuit of non-toxic alternatives such as gallium alloys, the native surface oxide formation often prohibits reliable device functionality. Additionally, traditional electrowetting architectures rely on lossy electrode materials which degrade RF transmission efficiencies and result in non-reversible material diffusion at the electrode/liquid metal contact. In this work, we report on approaches to utilize liquid metals in electrowetting on dielectric (EWOD) devices that resolve all of these challenges by judicious choice of novel electrode materials, dielectric fluid, and device architecture. A functional RF device, namely an electromagnetic polarizer, is demonstrated that can be activated on demand through EWOD and provides an average signal attenuation of 12.91 dB in the on state and 1.46 dB in the off state over the range of 8–9.2 GHz, with a switching speed of about 12 ms. These results can be further extended to other RF applications such as tunable antennas, transmission lines, and switchable metasurfaces. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Micromechanics & Microengineering is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID metals KW - RADIO frequency KW - ELECTROMAGNETISM KW - LABS on a chip KW - ELECTRIC potential N1 - Accession Number: 120783268; A V Diebold 1,2 A M Watson 3 S Holcomb 1 C Tabor 3 D Mast 1,4 M D Dickey 5 J Heikenfeld 1; Email Address: heikenjc@ucmail.uc.edu; Affiliation: 1: Novel Devices Laboratory, School of Electronics and Computing Systems, University of Cincinnati, Cincinnati, OH 45221, USA 2: Now located at Department of Electrical and Computer Engineering, Pratt School of Engineering, Duke University, Durham, NC 27708. 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA 4: Department of Physics, University of Cincinnati, Cincinnati, OH 45221, USA 5: Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695, USA; Source Info: Feb2017, Vol. 27 Issue 2, p1; Subject Term: LIQUID metals; Subject Term: RADIO frequency; Subject Term: ELECTROMAGNETISM; Subject Term: LABS on a chip; Subject Term: ELECTRIC potential; Number of Pages: 1p; Document Type: Article L3 - 10.1088/1361-6439/aa556a UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120783268&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 121151393 T1 - Diffusion tensor imaging as a biomarker for assessing neuronal stem cell treatments affecting areas distal to the site of spinal cord injury. AU - Jirjis, Michael B AU - Valdez, Chris AU - Vedantam, Aditya AU - Schmit, Brian D AU - Kurpad, Shekar N Y1 - 2017/02// N1 - Accession Number: 121151393. Language: English. Entry Date: In Process. Revision Date: 20170210. Publication Type: journal article. Journal Subset: Biomedical; USA. NLM UID: 101223545. SP - 243 EP - 251 JO - Journal of Neurosurgery: Spine JF - Journal of Neurosurgery: Spine JA - J NEUROSURG SPINE VL - 26 IS - 2 CY - Rolling Meadows, Illinois PB - American Association of Neurological Surgeons & the Journal of Neurosurgical Publishing Group AB - OBJECTIVE The aims of this study were to determine if the morphological and functional changes induced by neural stem cell (NSC) grafts after transplantation into the rodent spinal cord can be detected using MR diffusion tensor imaging (DTI) and, furthermore, if the DTI-derived mean diffusivity (MD) metric could be a biomarker for cell transplantation in spinal cord injury (SCI). METHODS A spinal contusion was produced at the T-8 vertebral level in 40 Sprague Dawley rats that were separated into 4 groups, including a sham group (injury without NSC injection), NSC control group (injury with saline injection), co-injection control group (injury with Prograf), and the experimental group (injury with NSC and Prograf injection). The NSC injection was completed 1 week after injury into the site of injury and the rats in the experimental group were compared to the rats from the sham, NSC control, and co-injection groups. The DTI index, MD, was assessed in vivo at 2, 5, and 10 weeks and ex vivo at 10 weeks postinjury on a 9.4-T Bruker scanner using a spin-echo imaging sequence. DTI data of the cervical spinal cord from the sham surgery, injury with saline injection, injury with injection of Prograf only, and injury with C17.2 NSC and Prograf injection were examined to evaluate if cellular proliferation induced by intrathoracic C17.2 engraftment was detectable in a noninvasive manner. RESULTS At 5 weeks after injury, the average fractional anisotropy, longitudinal diffusion (LD) and radial diffusion (RD) coefficients, and MD of water (average of the RD and LD eigenvalues in the stem cell line-treated group) increased to an average of 1.44 × 10-3 sec/mm2 in the cervical segments, while the control groups averaged 0.98 × 10-3 s/mm2. Post hoc Tukey's honest significant difference tests demonstrated that the transplanted stem cells had significantly higher MD values than the other groups (p = 0.032 at 5 weeks). In vivo and ex vivo findings at 10 weeks displayed similar results. This statistical difference between the stem cell line and the other groups was maintained at the 10-week postinjury in vivo and ex vivo time points. CONCLUSIONS These results indicate that the DTI-derived MD metric collected from noninvasive imaging techniques may provide useful biomarker indices for transplantation interventions that produce changes in the spinal cord structure and function. Though promising, the results demonstrated here suggest additional work is needed before implementation in a clinical setting. SN - 1547-5654 AD - Department of Biomedical Engineering, Marquette University AD - Air Force Research Laboratory, 711th Human Performance Wing, Human Effectiveness Directorate, Bioeffects Division, Radio Frequency Bioeffects Branch, and AD - National Research Council Research Associateship Program, Joint Base San Antonio, Fort Sam Houston, San Antonio, Texas AD - Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin; and U2 - PMID: 27689421. DO - 10.3171/2016.5.SPINE151319 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=121151393&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Hussein, Ahmed M. AU - Rao, Satish I. AU - Uchic, Michael D. AU - Parthasarathy, Triplicane A. AU - El-Awady, Jaafar A. T1 - The strength and dislocation microstructure evolution in superalloy microcrystals. JO - Journal of the Mechanics & Physics of Solids JF - Journal of the Mechanics & Physics of Solids Y1 - 2017/02// VL - 99 M3 - Article SP - 146 EP - 162 SN - 00225096 AB - In this work, the evolution of the dislocations microstructure in single crystal two-phase superalloy microcrystals under monotonic loading has been studied using the three-dimensional discrete dislocation dynamics (DDD) method. The DDD framework has been extended to properly handle the collective behavior of dislocations and their interactions with large collections of arbitrary shaped precipitates. Few constraints are imposed on the initial distribution of the dislocations or the precipitates, and the extended DDD framework can support experimentally-obtained precipitate geometries. Full tracking of the creation and destruction of anti-phase boundaries (APB) is accounted for. The effects of the precipitate volume fraction, APB energy, precipitate size, and crystal size on the deformation of superalloy microcrystals have been quantified. Correlations between the precipitate microstructure and the dominant deformation features, such as dislocation looping versus precipitate shearing, are also discussed. It is shown that the mechanical strength is independent of the crystal size, increases linearly with increasing the volume fraction, follows a near square-root relationship with the APB energy and an inverse square-root relationship with the precipitate size. Finally, the flow strength in simulations having initial dislocation pair sources show a flow strength that is about one half of that predicted from simulations starting with single dislocation sources. The method developed can be used, with minimal extensions, to simulate dislocation microstructure evolution in general multiphase materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Mechanics & Physics of Solids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRENGTH of materials KW - DISLOCATION structure KW - HEAT resistant alloys KW - MICROSTRUCTURE KW - SINGLE crystals KW - MONOTONIC functions KW - Anti-phase boundary KW - Dislocation dynamics KW - Dislocation microstructure evolution KW - Intrinsic size effects KW - Superalloys N1 - Accession Number: 121068796; Hussein, Ahmed M. 1,2; Email Address: ahussei4@jhu.edu Rao, Satish I. 3 Uchic, Michael D. 2 Parthasarathy, Triplicane A. 4 El-Awady, Jaafar A. 1; Email Address: jelawady@jhu.edu; Affiliation: 1: Department of Mechanical Engineering, Whiting School of Engineering, The Johns Hopkins University, Baltimore, MD 21218-2682, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7817, USA 3: Institute of Mechanical Engineering, EPFL, Lausanne, Switzerland 4: UES Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432-1894, USA; Source Info: Feb2017, Vol. 99, p146; Subject Term: STRENGTH of materials; Subject Term: DISLOCATION structure; Subject Term: HEAT resistant alloys; Subject Term: MICROSTRUCTURE; Subject Term: SINGLE crystals; Subject Term: MONOTONIC functions; Author-Supplied Keyword: Anti-phase boundary; Author-Supplied Keyword: Dislocation dynamics; Author-Supplied Keyword: Dislocation microstructure evolution; Author-Supplied Keyword: Intrinsic size effects; Author-Supplied Keyword: Superalloys; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.jmps.2016.11.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121068796&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fortier, Aleksandra AU - Pecht, Michael G. T1 - A perspective of the IPC report on lead-free electronics in military/aerospace applications. JO - Microelectronics Reliability JF - Microelectronics Reliability Y1 - 2017/02// VL - 69 M3 - Article SP - 66 EP - 70 SN - 00262714 AB - Significant progress towards lead-free technology implementation has been made in the last decade. However, majority of the successful transition has been done within consumer electronics industry while high reliability military/aerospace products are yet to fully transition. This study discusses viewpoint on the recent IPC report published on lead-free electronics in military and aerospace applications. Additionally, reliability considerations are discussed, and guidelines along with standards for robust transition and implementation towards lead-free technology is presented. A “preventive” transition approach based upon more accurate models of failure mechanisms and life prediction than are currently available will be required in order to assess successful implementation within military/aerospace products and for high reliability to be achieved. [ABSTRACT FROM AUTHOR] AB - Copyright of Microelectronics Reliability is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEAD-free ceramics KW - AEROSPACE engineering KW - ELECTRONIC industries KW - RELIABILITY (Engineering) KW - PHASE transformations (Physics) KW - Lead-free electronics KW - Lead-free solders KW - Military/aerospace application KW - Reliability risks KW - RoHS exempt KW - Sn whiskers N1 - Accession Number: 120954140; Fortier, Aleksandra 1; Email Address: drafortier@gmail.com Pecht, Michael G. 2; Affiliation: 1: University of Dayton Research Institute and The Air Force Research Laboratory Wright-Patterson Air Force Base, OH 45433, USA 2: Mechanical Engineering Department, Center for Advanced Life Cycle Engineering (CALCE), University of Maryland, College Park, MD 20742, USA; Source Info: Feb2017, Vol. 69, p66; Subject Term: LEAD-free ceramics; Subject Term: AEROSPACE engineering; Subject Term: ELECTRONIC industries; Subject Term: RELIABILITY (Engineering); Subject Term: PHASE transformations (Physics); Author-Supplied Keyword: Lead-free electronics; Author-Supplied Keyword: Lead-free solders; Author-Supplied Keyword: Military/aerospace application; Author-Supplied Keyword: Reliability risks; Author-Supplied Keyword: RoHS exempt; Author-Supplied Keyword: Sn whiskers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 443143 Appliance, television and other electronics stores; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.microrel.2017.01.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120954140&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - BERMAN, ELIZABETH AU - MASON JR, ROBERT B. T1 - Reducing Cr6 in Military Anodizing Operations. JO - Products Finishing JF - Products Finishing Y1 - 2017/02// VL - 81 IS - 5 M3 - Article SP - 16 EP - 19 PB - Gardner Publications, Inc. SN - 00329940 AB - The article discusses the development of a sealer to replace the dichromate variety at the Ogden Air Logistics Complex (OO-ALC) in Ogden, Utah. It mentions that a dichromate sealer is used by the U.S. Air Force (USAF) for the aluminum landing gear commponents that are anodized to provide wear- and corrosion-resistant surfaces that often contains hexavalent chromium, which is listed as hazardous air pollutant. KW - METALS -- Anodic oxidation KW - ALUMINUM -- Anodic oxidation KW - CHROMIUM KW - HEAT resistant alloys KW - UNITED States. Air Force N1 - Accession Number: 121070721; BERMAN, ELIZABETH 1; MASON JR, ROBERT B. 2; Affiliations: 1: Air Force Research Laboratory at Wright-Patterson Air Force Base in Dayton, Ohio; 2: Concurrent Technologies Corp. in Odessa, Florida; Issue Info: Feb2017, Vol. 81 Issue 5, p16; Subject Term: METALS -- Anodic oxidation; Subject Term: ALUMINUM -- Anodic oxidation; Subject Term: CHROMIUM; Subject Term: HEAT resistant alloys ; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 332813 Electroplating, Plating, Polishing, Anodizing, and Coloring; NAICS/Industry Codes: 928110 National Security; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=121070721&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Kui Liu AU - Sixiao Wei AU - Zhijiang Chen AU - Bin Jia AU - Genshe Chen AU - Haibin Ling AU - Sheaff, Carolyn AU - Blasch, Erik T1 - A Real-Time High Performance Computation Architecture for Multiple Moving Target Tracking Based on Wide-Area Motion Imagery via Cloud and Graphic Processing Units. JO - Sensors (14248220) JF - Sensors (14248220) Y1 - 2017/02// VL - 17 IS - 2 M3 - Article SP - 1 EP - 16 SN - 14248220 AB - This paper presents the first attempt at combining Cloud with Graphic Processing Units (GPUs) in a complementary manner within the framework of a real-time high performance computation architecture for the application of detecting and tracking multiple moving targets based onWide Area Motion Imagery (WAMI). More specifically, the GPU and Cloud Moving Target Tracking (GC-MTT) system applied a front-end web based server to perform the interaction with Hadoop and highly parallelized computation functions based on the Compute Unified Device Architecture (CUDA©). The introduced multiple moving target detection and tracking method can be extended to other applications such as pedestrian tracking, group tracking, and Patterns of Life (PoL) analysis. The cloud and GPUs based computing provides an efficient real-time target recognition and tracking approach as compared to methods when the work flow is applied using only central processing units (CPUs). The simultaneous tracking and recognition results demonstrate that a GC-MTT based approach provides drastically improved tracking with low frame rates over realistic conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Sensors (14248220) is the property of MDPI Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REAL-time computing -- Software KW - COMPUTER architecture KW - MULTIPLE target tracking KW - WIDE area networks (Computer networks) KW - CLOUD computing KW - GRAPHICS processing units (Computers) KW - cloud infrastructure KW - high performance computation KW - target detection KW - target tracking N1 - Accession Number: 121459512; Kui Liu 1; Email Address: kui.liu@intfusiontech.com Sixiao Wei 1; Email Address: sixiao.wei@intfusiontech.com Zhijiang Chen 1; Email Address: zhijiang.chen@intfusiontech.com Bin Jia 1; Email Address: bin.jia@intfusiontech.com Genshe Chen 1; Email Address: gchen@intfusiontech.com Haibin Ling 2; Email Address: hbling@temple.edu Sheaff, Carolyn 3; Email Address: carolyn.sheaff@us.af.mil Blasch, Erik 3; Email Address: erik.blasch.1@us.af.mil; Affiliation: 1: Intelligent Fusion Technology, Inc., Germantown, MD 20876, USA 2: Department of Computer and Information Sciences, Temple University, Philadelphia, PA 19122, USA 3: Air Force Research Laboratory, Information Directorate, Rome, NY 13441, USA; Source Info: Feb2017, Vol. 17 Issue 2, p1; Subject Term: REAL-time computing -- Software; Subject Term: COMPUTER architecture; Subject Term: MULTIPLE target tracking; Subject Term: WIDE area networks (Computer networks); Subject Term: CLOUD computing; Subject Term: GRAPHICS processing units (Computers); Author-Supplied Keyword: cloud infrastructure; Author-Supplied Keyword: high performance computation; Author-Supplied Keyword: target detection; Author-Supplied Keyword: target tracking; NAICS/Industry Codes: 518210 Data Processing, Hosting, and Related Services; Number of Pages: 16p; Document Type: Article L3 - 10.3390/s17020356 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121459512&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2017-05527-002 AN - 2017-05527-002 AU - Hancock, Peter A. AU - Baldwin, Carryl L. AU - Warm, Joel S. AU - Szalma, James L. T1 - Between two worlds: Discourse on the vigilant and sustained contributions of Raja Parasuraman. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2017/02// VL - 59 IS - 1 SP - 28 EP - 34 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Hancock, Peter A., Department of Psychology, University of Central Florida, 4111 Pictor Lane, Psychology Boulevard, Suite 301D, Orlando, FL, US, 32817 N1 - Accession Number: 2017-05527-002. PMID: 28146677 Partial author list: First Author & Affiliation: Hancock, Peter A.; Department of Psychology, University of Central Florida, Orlando, FL, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20170216. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Human Factors Engineering; Vigilance. Minor Descriptor: Genotypes; Life Experiences. Classification: Human Factors Engineering (4010). Population: Human (10); Male (30). Age Group: Adulthood (18 yrs & older) (300). Page Count: 7. Issue Publication Date: Feb, 2017. Publication History: Accepted Date: Dec 15, 2016; First Submitted Date: Dec 21, 2015. Copyright Statement: Human Factors and Ergonomics Society. 2017. AB - Objective: To provide an evaluative overview of the life and contributions of Raja Parasuraman. Background: From his earliest contributions in clarifying and explaining the problematic area of vigilance to his most recent interdisciplinary advances in understanding how genotype relates to behavior in complex technical environments, Raja Parasuraman was a giant of human factors and ergonomics. Our present exposition articulates and recounts his many contributions to our science and to science in general beyond the confines of our own discipline. Method: We use the history of scientific contributions, biographical analysis, and reported personal experience to accomplish our overall assessment of the man and his work. Results: We conclude that Parasuraman’s contributions were unique, substantive, and seminal, and will continue to influence our science for many years to come. Application: This work will serve as a record for those to come who look to make significant contributions to the goals, aims, and aspirations that we set ourselves in human factors and ergonomics in seeking to improve the human condition. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - vigilance KW - neuroergonomics KW - genetics KW - training KW - aging KW - 2017 KW - Human Factors Engineering KW - Vigilance KW - Genotypes KW - Life Experiences KW - 2017 DO - 10.1177/0018720816688604 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2017-05527-002&site=ehost-live&scope=site UR - peter.hancock@ucf.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2017-05527-004 AN - 2017-05527-004 AU - Matthews, Gerald AU - Warm, Joel S. AU - Smith, Andrew P. T1 - Task engagement and attentional resources: Multivariate models for individual differences and stress factors in vigilance. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2017/02// VL - 59 IS - 1 SP - 44 EP - 61 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Matthews, Gerald, Institute for Simulation and Training, University of Central Florida, 3100 Technology Pkwy, Orlando, FL, US, 32826 N1 - Accession Number: 2017-05527-004. PMID: 28146681 Partial author list: First Author & Affiliation: Matthews, Gerald; Institute for Simulation and Training, University of Central Florida, Orlando, FL, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20170216. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Attention; Individual Differences; Vigilance; Psychological Engagement; Task. Minor Descriptor: Stress. Classification: Engineering & Environmental Psychology (4000). Population: Human (10); Male (30); Female (40). Location: United Kingdom; Scotland; US. Age Group: Adolescence (13-17 yrs) (200); Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: Dundee Stress State Questionnaire DOI: 10.1037/t27031-000. Methodology: Empirical Study; Quantitative Study. Page Count: 18. Issue Publication Date: Feb, 2017. Publication History: Accepted Date: Sep 10, 2016; First Submitted Date: Nov 30, 2015. Copyright Statement: Human Factors and Ergonomics Society. 2017. AB - Objective: Two studies tested multivariate models of relationships between subjective task engagement and vigilance. The second study included a stress factor (cold infection). Modeling tested relationships between latent factors for task engagement and vigilance, and the role of engagement in mediating effects of cold infection. Background: Raja Parasuraman’s research on vigilance identified several key issues, including the roles of task factors, arousal processes, and individual differences, within the framework of resource theory. Task engagement is positively correlated with performance on various attentional tasks and may serve as a marker for resource availability. Method: In the first study, 229 participants performed simultaneous and successive vigilance tasks. In the second study, 204 participants performed a vigilance task and a variable-foreperiod simple reaction-time task on two separate days. On the second day, 96 participants performed while infected with a naturally occurring common cold. Task engagement was assessed in both studies. Results: In both studies, vigilance decrement in hit rate was observed, and task performance led to loss of task engagement. Cold infection also depressed both vigilance and engagement. Fitting structural equation models indicated that simultaneous and successive tasks should be represented by separate latent factors (Study 1), and task engagement fully mediated the impact of cold infection on vigilance but not reaction time (Study 2). Conclusions: Modeling individual differences in task engagement elucidates the role of resources in vigilance and underscores the relevance of Parasuraman’s vision of the field. Application: Assessment of task engagement may support diagnostic monitoring of operators performing tasks requiring vigilance. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - vigilance KW - fatigue KW - task engagement KW - cold infection KW - diagnostic monitoring KW - 2017 KW - Attention KW - Individual Differences KW - Vigilance KW - Psychological Engagement KW - Task KW - Stress KW - 2017 DO - 10.1177/0018720816673782 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2017-05527-004&site=ehost-live&scope=site UR - gmatthews@ist.ucf.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2017-05027-008 AN - 2017-05027-008 AU - Walsh, Matthew M. AU - Gunzelmann, Glenn AU - Anderson, John R. T1 - Relationship of P3b single-trial latencies and response times in one, two, and three-stimulus oddball tasks. JF - Biological Psychology JO - Biological Psychology JA - Biol Psychol Y1 - 2017/02// VL - 123 SP - 47 EP - 61 CY - Netherlands PB - Elsevier Science SN - 0301-0511 AD - Walsh, Matthew M., TiER1 Performance Solutions, Covington, KY, US, 41011 N1 - Accession Number: 2017-05027-008. PMID: 27894839 Partial author list: First Author & Affiliation: Walsh, Matthew M.; TiER1 Performance Solutions, Covington, KY, US. Release Date: 20170213. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Walsh, Matthew M. Major Descriptor: Reaction Time; Response Latency; Stimulus Parameters; P300; Task. Classification: Electrophysiology (2530). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: Psychomotor Vigilance Task; 3-Stimulus Task; Radar Task. Methodology: Empirical Study; Quantitative Study. Page Count: 15. Issue Publication Date: Feb, 2017. Publication History: First Posted Date: Nov 25, 2016; Accepted Date: Nov 23, 2016; Revised Date: Nov 22, 2016; First Submitted Date: Sep 1, 2016. Copyright Statement: All rights reserved. Elsevier B.V. 2016. AB - The P300 is one of the most widely studied components of the human event-related potential. According to a longstanding view, the P300, and particularly its posterior subcomponent (i.e., the P3b), is driven by stimulus categorization. Whether the P3b relates to tactical processes involved in immediate responding or strategic processes that affect future behavior remains controversial, however. It is difficult to determine whether variability in P3b latencies relates to variability in response times because of limitations in the methods currently available to quantify the latency of the P3b during single trials. In this paper, we report results from the Psychomotor Vigilance Task (PVT), the Hitchcock Radar Task, and a 3-Stimulus Oddball Task. These represent variants of the one-, two-, and three-stimulus oddball paradigms commonly used to study the P3b. The PVT requires simple detection, whereas the Hitchcock Radar Task and the 3-Stimulus Task require detection and categorization. We apply a novel technique that combines hidden semi-Markov models and multi-voxel pattern analysis (HSMM-MVPA) to data from the three experiments. HSMM-MVPA revealed a processing stage in each task corresponding to the P3b. Trial-bytrial variability in the latency of the processing stage correlated with response times in the Hitchcock Radar Task and the 3-Stimulus Task, but not the PVT. These results indicate that the P3b reflects a stimulus categorization process, and that its latency is strongly associated with response times when the stimulus must be categorized before responding. In addition to those theoretical insights, the ability to detect the onset of the P3b and other components on a single-trial basis using HSMM-MVPA opens the door for new uses of mental chronometry in cognitive neuroscience. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - P300 KW - EEG KW - Hidden semi-Markov models KW - Multi-voxel pattern analysis KW - N1 KW - 2017 KW - Reaction Time KW - Response Latency KW - Stimulus Parameters KW - P300 KW - Task KW - 2017 U1 - Sponsor: Office of Naval Research. Grant: N00014-15-1-2151. Recipients: Walsh, Matthew M. U1 - Sponsor: AFRL, US. Recipients: No recipient indicated DO - 10.1016/j.biopsycho.2016.11.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2017-05027-008&site=ehost-live&scope=site UR - mmw188@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2017-05527-005 AN - 2017-05527-005 AU - Funke, Matthew E. AU - Warm, Joel S. AU - Matthews, Gerald AU - Funke, Gregory J. AU - Chiu, Peter Y. AU - Shaw, Tyler H. AU - Greenlee, Eric T. T1 - The neuroergonomics of vigilance: Effects of spatial uncertainty on cerebral blood flow velocity and oculomotor fatigue. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2017/02// VL - 59 IS - 1 SP - 62 EP - 75 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Funke, Matthew E., Naval Medical Research Unit Dayton, 2624 Q Street, Wright- Patterson Air Force Base, OH, US, 45433 N1 - Accession Number: 2017-05527-005. PMID: 28146671 Partial author list: First Author & Affiliation: Funke, Matthew E.; Naval Medical Research Unit Dayton, Wright-Patterson Air Force Base, OH, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20170216. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cerebral Blood Flow; Fatigue; Spatial Perception; Uncertainty; Vigilance. Minor Descriptor: Human Factors Engineering. Classification: Human Factors Engineering (4010). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Methodology: Empirical Study; Quantitative Study. Page Count: 14. Issue Publication Date: Feb, 2017. Publication History: Accepted Date: Nov 10, 2016; First Submitted Date: Dec 31, 2015. AB - Objective: The aim of this study was to examine the effects of uncertainty about where in the field of view critical signals for detection appear during a vigilance task (spatial uncertainty) on cerebral blood flow velocity (CBFV) and oculomotor fatigue. Background: Neuroergonomics is a dimension of human factors founded by Raja Parasuraman that studies brain functions underlying performance at work. Neuroergonomic studies have shown that observers in vigilance tasks lose information-processing resources over time and experience oculomotor fatigue as indexed by a temporal decline in CBFV and elevation in eye closure as reflected in the PERCLOS metric. Because spatial uncertainty increases an observer’s need for visual scanning relative to a spatial certainty condition, it was anticipated that spatial uncertainty would result in a greater temporal decline in CBFV and increased eye closure in a vigilance session. Method: Observers performed a simulated unmanned aerial vehicle (UAV) control task wherein collision flight paths were the events to be detected. UAV images could appear at random in any one of five locations on the controller’s display (spatial uncertainty) or only in a fixed location (spatial certainty). Results: Signal detection was poorer in the spatial-uncertain relative to the certain condition, and predictions regarding CBFV and eye closure were confirmed. Conclusion: Vigilance tasks involving spatial uncertainty are more neurophysiologically taxing than those in which spatial uncertainty is not a factor. Application: The neuroergonomic approach helps in understanding the effects of psychophysical factors in vigilance and to signify when performance aiding is needed. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - neuroergonomics KW - vigilance KW - spatial uncertainty KW - cerebral hemovelocity KW - transcranial Doppler sonography KW - oculomotor fatigue KW - 2017 KW - Cerebral Blood Flow KW - Fatigue KW - Spatial Perception KW - Uncertainty KW - Vigilance KW - Human Factors Engineering KW - 2017 DO - 10.1177/0018720816683121 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2017-05527-005&site=ehost-live&scope=site UR - matthew.funke.1@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Basun, S. A. AU - Halliburton, L. E. AU - Evans, D. R. T1 - Hyperbolic decay of photo-created Sb2+ ions in Sn2P2S6:Sb crystals detected with electron paramagnetic resonance. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2017/01/30/ VL - 110 IS - 5 M3 - Article SP - 052903-1 EP - 052903-5 SN - 00036951 AB - In this paper, we employed a method that overcomes the known limitations of electron paramagnetic resonance (EPR) to monitor charge trap dynamics over a broad temperature range not normally accessible due to the lifetime broadening of the EPR lines at higher temperatures. This was achieved by measuring the decay of the EPR intensity after thermal annealing by rapid cycling back to low temperatures for the EPR measurement. This technique was used to experimentally demonstrate interesting physics in the form of a direct measurement of the hyperbolic decay 1/(1+t) of a charge trap population, which previously was only considered theoretically. The nontrivial effects of bimolecular recombination are demonstrated in the Sn2S2P6:Sb crystals, providing an explanation of the optical sensitization process observed in photorefractive Sn2P2S6:Sb used for dynamic holography. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTIMONY crystals KW - ELECTRON paramagnetic resonance KW - ANNEALING of metals KW - RECOMBINATION (Chemistry) KW - HOLOGRAPHY KW - TIN N1 - Accession Number: 121127713; Basun, S. A. 1,2 Halliburton, L. E. 2,3 Evans, D. R. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Azimuth Corporation, 4027 Colonel Glenn Highway, Suite 230, Beavercreek, Ohio 45431, USA 3: Department of Physics and Astronomy, West Virginia University, Morgantown, West Virginia 26506, USA; Source Info: 2017, Vol. 110 Issue 5, p052903-1; Subject Term: ANTIMONY crystals; Subject Term: ELECTRON paramagnetic resonance; Subject Term: ANNEALING of metals; Subject Term: RECOMBINATION (Chemistry); Subject Term: HOLOGRAPHY; Subject Term: TIN; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 5p; Illustrations: 1 Color Photograph, 2 Graphs; Document Type: Article L3 - 10.1063/1.4975684 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121127713&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morales Ferreiro, J.O. AU - Diaz-Droguett, D.E. AU - Celentano, D. AU - Reparaz, J.S. AU - Sotomayor Torres, C.M. AU - Ganguli, S. AU - Luo, T. T1 - Effect of the annealing on the power factor of un-doped cold-pressed SnSe. JO - Applied Thermal Engineering JF - Applied Thermal Engineering Y1 - 2017/01/25/ VL - 111 M3 - Article SP - 1426 EP - 1432 SN - 13594311 AB - Tin Selenide (SnSe), a thermoelectric material of the chalcogenide family, has attracted tremendous interest in the past few years due to its unprecedented thermoelectric figure-of-merit, ZT , of 2.6. In this work we have carried out an experimental study of the impact of annealing on the thermoelectric properties of polycrystalline SnSe formed by cold-pressing un-doped SnSe powders with a Hall carrier concentration of 5.37 × 10 17 cm −3 . The crystalline structure and morphology of the samples are characterized and properties, including electrical conductivity, Seebeck coefficient and thermal conductivity, are measured. It is found that thermal annealing has a large impact on both the microstructure and the thermoelectric properties. Notably, annealing leads to re-alignment of crystalline domains, increase in Seebeck coefficient by a factor of as much as 3, and increase in the electrical conductivity. A peak ZT of 0.11 was achieved at 772 K which is smaller than un-doped polycrystalline SnSe. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Thermal Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TIN selenide KW - ANNEALING of metals KW - CHALCOGENIDES KW - THERMOELECTRIC effects KW - DOPING agents (Chemistry) KW - Electrical conductivity KW - Figure-of-merit ZT KW - Seebeck coefficient KW - SEM KW - Thermal conductivity KW - XRD N1 - Accession Number: 120158779; Morales Ferreiro, J.O. 1,2,3; Email Address: jferrei2@nd.edu; Diaz-Droguett, D.E. 4,5; Email Address: dodiaz@fis.puc.cl; Celentano, D. 2,5; Email Address: dcelentano@ing.puc.cl; Reparaz, J.S. 6; Email Address: sebas.reparaz@icn.cat; Sotomayor Torres, C.M. 6,7; Email Address: clivia.sotomayor@icn2.cat; Ganguli, S. 8; Email Address: sabyasachi.ganguli.2@us.af.mil; Luo, T. 1,9; Email Address: tluo@nd.edu; Affiliations: 1: Aerospace and Mechanical Engineering Department, University of Notre Dame, USA; 2: Departamento de Ingeniería Mecánica, Pontificia Universidad Católica de Chile, Chile; 3: School of Industrial Engineering, Universidad Diego Portales, Santiago, Chile; 4: Instituto de Física, Facultad de Física, Pontificia Universidad Católica de Chile, Chile; 5: Centro de Investigación en Nanotecnología y Materiales Avanzados (CIEN-UC), Pontificia Universidad Católica de Chile, Chile; 6: Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain; 7: ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain; 8: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright/Patterson Air Force Base, OH 45433, USA; 9: Center for Sustainable Energy of Notre Dame (cSEND), University of Notre Dame, USA; Issue Info: Jan2017, Vol. 111, p1426; Subject Term: TIN selenide; Subject Term: ANNEALING of metals; Subject Term: CHALCOGENIDES; Subject Term: THERMOELECTRIC effects; Subject Term: DOPING agents (Chemistry); Author-Supplied Keyword: Electrical conductivity; Author-Supplied Keyword: Figure-of-merit ZT; Author-Supplied Keyword: Seebeck coefficient; Author-Supplied Keyword: SEM; Author-Supplied Keyword: Thermal conductivity; Author-Supplied Keyword: XRD; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.applthermaleng.2016.07.198 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=120158779&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Ozturk, D. AU - Pilchak, A.L. AU - Ghosh, S. T1 - Experimentally validated dwell and cyclic fatigue crack nucleation model for α–titanium alloys. JO - Scripta Materialia JF - Scripta Materialia Y1 - 2017/01/15/ VL - 127 M3 - Article SP - 15 EP - 18 SN - 13596462 AB - This paper develops an experimentally calibrated and validated crystal plasticity finite element model with a probabilistic crack nucleation model for predicting dwell and cyclic fatigue crack nucleation in polycrystalline microstructures of titanium or Ti alloys. The nucleation model accounts for load-shedding due to time-dependent plastic flow and variability in crystal strength. The predictions are corroborated with experimental observations of nucleation times for dwell and cyclic loading. Experimental characterization of failed samples reveal that crack initiation on (0001) planes are highly inclined away from the stress axis. The probability distribution of simulated facet orientations are in agreement with experimentally measured orientations. [ABSTRACT FROM AUTHOR] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE cracks KW - CYCLIC fatigue KW - NUCLEATION KW - TITANIUM alloys KW - PLASTICITY KW - Dwell and cyclic loading KW - Experimental observations KW - Image-based crystal plasticity FEM KW - Probabiltiy-based crack nucleation model KW - Ti-7Al alloy N1 - Accession Number: 118849026; Ozturk, D. 1 Pilchak, A.L. 2 Ghosh, S. 1; Email Address: sghosh20@jhu.edu; Affiliation: 1: Departments of Civil and Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, United States 2: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RXCM), Wright Patterson AFB, OH 45433, United States; Source Info: Jan2017, Vol. 127, p15; Subject Term: FATIGUE cracks; Subject Term: CYCLIC fatigue; Subject Term: NUCLEATION; Subject Term: TITANIUM alloys; Subject Term: PLASTICITY; Author-Supplied Keyword: Dwell and cyclic loading; Author-Supplied Keyword: Experimental observations; Author-Supplied Keyword: Image-based crystal plasticity FEM; Author-Supplied Keyword: Probabiltiy-based crack nucleation model; Author-Supplied Keyword: Ti-7Al alloy; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2016.08.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118849026&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Melko, Joshua J. AU - Ard, Shaun G. AU - Lê, Trí AU - Miller, Gregory S. AU - Martinez Jr., Oscar AU - Shuman, Nicholas S. AU - Viggiano, Albert A. T1 - Determining Rate Constants and Mechanisms for Sequential Reactions of Fe+ with Ozone at 500 K. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2017/01/12/ VL - 121 IS - 1 M3 - Article SP - 24 EP - 30 SN - 10895639 AB - We present rate constants and product branching ratios for the reactions of FeOX+ (X = 0-4) with ozone at 500 K. Fe+ is observed to react with ozone at the collision rate to produce FeO+ + O2. The FeO+ in turn reacts with ozone at the collision rate to yield both Fe+ and FeO2+ product channels. Ions up to FeO4+ display similar reactivity patterns. Three-body clustering reactions with O2 prevent us from measuring accurate rate constants at 300 K although the data do suggest that the efficiency is also high. Therefore, it is probable that little to no temperature dependence eXists over this range. Implications of our measurements to the regulation of atmospheric iron and ozone are discussed. Density functional calculations on the reaction of Fe+ with ozone show no substantial kinetic barriers to make the FeO+ + O2 product channel, which is consistent with the reaction's efficiency. While a pathway to make FeO2+ + O is also found to be barrierless, our eXperiments indicate no primary FeO2+ formation for this reaction. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IRON oxides KW - OZONE KW - THREE-body problem (Physics) KW - ATMOSPHERIC iron KW - REACTION mechanisms (Chemistry) KW - COLLISIONS (Physics) KW - DENSITY functionals KW - DENSITY functional theory N1 - Accession Number: 120713820; Melko, Joshua J. 1; Email Address: josh.melko@unf.edu Ard, Shaun G. 1 Lê, Trí 1 Miller, Gregory S. 1 Martinez Jr., Oscar 2 Shuman, Nicholas S. 2 Viggiano, Albert A. 2; Affiliation: 1: Department of Chemistry, University of North Florida, 1 UNF Drive, Jacksonville, Florida 32224, United States 2: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico 87117-5776, United States; Source Info: Jan2017, Vol. 121 Issue 1, p24; Subject Term: IRON oxides; Subject Term: OZONE; Subject Term: THREE-body problem (Physics); Subject Term: ATMOSPHERIC iron; Subject Term: REACTION mechanisms (Chemistry); Subject Term: COLLISIONS (Physics); Subject Term: DENSITY functionals; Subject Term: DENSITY functional theory; Number of Pages: 7p; Document Type: Article L3 - 10.1021/acs.jpca.6b08971 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120713820&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Day, Paul N. AU - Pachter, Ruth AU - Nguyen, Kiet A. T1 - A Theoretical Investigation of the Structure and Optical Properties of a Silver Cluster in Solid Form and in Solution. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2017/01/12/ VL - 121 IS - 1 M3 - Article SP - 326 EP - 333 SN - 10895639 AB - Using density functional theory (DFT) and linear and quadratic response time-dependent DFT, we investigated the structure and optical properties of a silver sulfide cluster with the interesting property of dual emission that was observed when in crystal form but not in solution. Since the dual fluorescence is observed only in the crystal, a supposition of stabilization of a higher-energy excited state by an excimer-like complex was analyzed by calculations for a cluster dimer, formed through π-stacking of aromatic groups bonded to the sulfur atoms. However, because of the complexity of the system, a simple one-dimensional method for dimer optimization, which works moderately well in predicting the red-shifted fluorescence compared to its absorption in a naphthalene dimer, predicts only partially the red shift for the emission energy. Interestingly, calculations of the two-photon absorption (TPA) cross-section on the optimized isolated cluster as well as the crystal structure geometry indicate significant off-resonance TPA. While some materials have significantly larger TPA cross-sections, such a TPA cross-section off-resonance could be useful. The high density of states in the dimer system results in a higher probability for significant resonance enhancement and thus much larger TPA cross-sections. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILVER clusters KW - SOLIDS KW - OPTICAL properties KW - TIME-dependent density functional theory KW - DUAL fluorescence KW - DIMERS KW - NAPHTHALENE KW - LIGHT absorption N1 - Accession Number: 120713842; Day, Paul N. 1,2; Email Address: paul.day.4.ctr@us.af.mil Pachter, Ruth 1; Email Address: ruth.pachter@us.af.mil Nguyen, Kiet A. 1,3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States 2: Universal Technology Corporation, Dayton, Ohio 45432, United States 3: UES, Inc., Dayton, Ohio 45432, United States; Source Info: Jan2017, Vol. 121 Issue 1, p326; Subject Term: SILVER clusters; Subject Term: SOLIDS; Subject Term: OPTICAL properties; Subject Term: TIME-dependent density functional theory; Subject Term: DUAL fluorescence; Subject Term: DIMERS; Subject Term: NAPHTHALENE; Subject Term: LIGHT absorption; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1021/acs.jpca.6b10868 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120713842&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jacob B Schmidt AU - Sukesh Roy AU - Waruna D Kulatilaka AU - Ivan Shkurenkov AU - Igor V Adamovich AU - Walter R Lempert AU - James R Gord T1 - Femtosecond, two-photon-absorption, laser-induced-fluorescence (fs-TALIF) imaging of atomic hydrogen and oxygen in non-equilibrium plasmas. JO - Journal of Physics: D Applied Physics JF - Journal of Physics: D Applied Physics Y1 - 2017/01/11/ VL - 50 IS - 1 M3 - Article SP - 1 EP - 1 SN - 00223727 AB - Femtosecond, two-photon-absorption laser-induced fluorescence (fs-TALIF) is employed to measure space- and time-resolved distributions of atomic hydrogen and oxygen in moderate-pressure, non-equilibrium, nanosecond-duration pulsed-discharge plasmas. Temporally and spatially resolved hydrogen and oxygen TALIF images are obtained over a range of low-temperature plasmas in mixtures of helium and argon at 100 Torr total pressure. The high-peak-intensity, low-average-energy fs pulses combined with the increased spectral bandwidth compared to traditional ns-duration laser pulses provide a large number of photon pairs that are responsible for the two-photon excitation, which results in an enhanced TALIF signal. Krypton and xenon TALIF are used for quantitative calibration of the hydrogen and oxygen concentrations, respectively, with similar excitation schemes being employed. This enables 2D collection of atomic-hydrogen and -oxygen TALIF signals with absolute number densities ranging from 2  ×  1012 cm−3 to 6  ×  1015 cm−3 and 1  ×  1013 cm−3 to 3  ×  1016 cm−3, respectively. These 2D images are the first application of TALIF imaging in moderate-pressure plasma discharges. 1D self-consistent modeling predictions show agreement with experimental results within the estimated experimental error of 25%. The present results can be used to further the development of higher fidelity kinetic models while quantifying plasma-source characteristics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: D Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATOMIC hydrogen KW - LIGHT absorption KW - PHOTONS N1 - Accession Number: 121167071; Jacob B Schmidt 1 Sukesh Roy 1; Email Address: roy.sukesh@gmail.com Waruna D Kulatilaka 1 Ivan Shkurenkov 2 Igor V Adamovich 2 Walter R Lempert 2 James R Gord 3; Affiliation: 1: Spectral Energies LLC, Dayton, OH 45431, USA 2: The Ohio State University, Columbus, OH 43210, USA 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: 1/11/2017, Vol. 50 Issue 1, p1; Subject Term: ATOMIC hydrogen; Subject Term: LIGHT absorption; Subject Term: PHOTONS; Number of Pages: 1p; Document Type: Article L3 - 10.1088/1361-6463/50/1/015204 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121167071&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Diggs, Angela AU - Balachandar, S. T1 - Modeling and Simulation Challenges in Eulerian-Lagrangian Computations of Multiphase Flows. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/01/10/ VL - 1793 M3 - Article SP - 1 EP - 4 SN - 0094243X AB - The present work addresses the numerical methods required for particle-gas and particle-particle interactions in Eulerian-Lagrangian simulations of multiphase flow. Local volume fraction as seen by each particle is the quantity of foremost importance in modeling and evaluating such interactions. We consider a general multiphase flow with a distribution of particles inside a fluid flow discretized on an Eulerian grid. Particle volume fraction is needed both as a Lagrangian quantity associated with each particle and also as an Eulerian quantity associated with the flow. In Grid-Based (GB) methods, the volume fraction is first obtained within each cell as an Eulerian quantity and then interpolated to each particle. In Particle-Based (PB) methods, the particle volume fraction is obtained at each particle and then projected onto the Eulerian grid. Traditionally, GB methods are used in multiphase flow, but sub-grid resolution can be obtained through use of PB methods. By evaluating the total error and its components we compare the performance of GB and PB methods. The standard von Neumann error analysis technique has been adapted for rigorous evaluation of rate of convergence. The methods presented can be extended to obtain accurate field representations of other Lagrangian quantities. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICULATE matter KW - FLOW (Fluid dynamics) KW - MULTIPHASE flow KW - TWO-phase flow KW - FRACTIONS N1 - Accession Number: 120822362; Diggs, Angela 1,2; Email Address: angela.diggs@ufl.edu Balachandar, S. 1; Email Address: bala1s@ufl.edu; Affiliation: 1: Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, 32611 USA 2: Air Force Research Laboratory, Munitions Directorate, Eglin Air Force Base, FL, 32542 USA; Source Info: 1/10/2017, Vol. 1793, p1; Subject Term: PARTICULATE matter; Subject Term: FLOW (Fluid dynamics); Subject Term: MULTIPHASE flow; Subject Term: TWO-phase flow; Subject Term: FRACTIONS; Number of Pages: 4p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.4971737 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120822362&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fajardo, Mario E. AU - Molek, Christopher D. AU - Fossum, Emily C. T1 - Time-of-Flight Mass Spectrometry of Laser Exploding Foil Initiated PETN Samples. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/01/10/ VL - 1793 M3 - Article SP - 1 EP - 7 SN - 0094243X AB - We report the results of time-of-flight mass spectrometry (TOFMS) measurements of the gaseous products of thin-film pentaerythritol tetranitrate [PETN, C(CH2NO3)4] samples reacting in vacuo. The PETN sample spots are produced by masked physical vapor deposition [A.S. Tappan, et al., AIP Conf. Proc. 1426, 677 (2012)] onto a firstsurface aluminum mirror. A pulsed laser beam imaged through the soda lime glass mirror substrate converts the aluminum layer into a high-temperature high-pressure plasma which initiates chemical reactions in the overlying PETN sample. We had previously proposed [E.C. Fossum, et al., AIP Conf. Proc. 1426, 235 (2012)] to exploit differences in gaseous product chemical identities and molecular velocities to provide a chemically-based diagnostic for distinguishing between "detonation-like" and deflagration responses. Briefly: we expect in-vacuum detonations to produce hyperthermal (v ~ 10 km/s) thermodynamically-stable products such as N2, CO2, and H2O, and for deflagrations to produce mostly reaction intermediates, such as NO and NO2, with much slower molecular velocities -- consistent with the expansion-quenched thermal decomposition of PETN. We observe primarily slow reaction intermediates (NO2, CH2NO3) at low laser pulse energies, the appearance of NO at intermediate laser pulse energies, and the appearance of hyperthemal CO/N2 at mass 28 amu at the highest laser pulse energies. However, these results are somewhat ambiguous, as the NO, NO2, and CH2NO3 intermediates persist and all species become hyperthermal at the higher laser pulse energies. Also, the purported CO/N2 signal at 28 amu may be contaminated by silicon ablated from the glass mirror substrate. We plan to mitigate these problems in future experiments by adopting the "Buelow" sample configuration which employs an intermediate foil barrier to shield the energetic material from the laser and the laser driven plasma [S.J. Buelow, et al., AIP Conf. Proc. 706, 1377 (2003)]. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TIME-of-flight mass spectrometry KW - PENTAERYTHRITOL tetranitrate KW - PHYSICAL vapor deposition KW - LASER pulses KW - PULSED lasers KW - LASER beams N1 - Accession Number: 120822115; Fajardo, Mario E. 1; Email Address: mario.fajardo@eglin.af.mil Molek, Christopher D. 1 Fossum, Emily C. 1; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Ordnance Division, Energetic Materials Branch, AFRL/RWME, 2306 Perimeter Road, Eglin AFB, FL 32542-5910, USA; Source Info: 1/10/2017, Vol. 1793, p1; Subject Term: TIME-of-flight mass spectrometry; Subject Term: PENTAERYTHRITOL tetranitrate; Subject Term: PHYSICAL vapor deposition; Subject Term: LASER pulses; Subject Term: PULSED lasers; Subject Term: LASER beams; Number of Pages: 7p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.4971482 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120822115&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fajardo, Mario E. AU - Molek, Christopher D. AU - Vesely, Annamaria L. T1 - Rubidium Atomic Line Filtered (RALF) Doppler Velocimetry. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/01/10/ VL - 1793 M3 - Article SP - 1 EP - 4 SN - 0094243X AB - We report recent improvements to our Rubidium Atomic Line Filtered (RALF) Doppler velocimetry apparatus [M.E. Fajardo, C.D. Molek, and A.L. Vesely, J. Appl. Phys. 118, 144901 (2015)]. RALF is a high-velocity and high-acceleration adaptation of the Doppler Global Velocimetry method for measuring multi-dimensional velocity vector flow fields, which was developed in the 1990s by aerodynamics researchers [H. Komine, U.S. Patent #4,919,536]. Laser velocimetry techniques in common use within the shock physics community (e.g. VISAR, Fabry-Pérot, PDV) decode the Doppler shift of light reflected from a moving surface via interference phenomena. In contrast, RALF employs a completely different physical principle: the frequency-dependent near-resonant optical transmission of a Rb/N2 gas cell, to encode the Doppler shift of reflected λ0 ≈ 780.24 nm light directly onto the transmitted light intensity. Thus, RALF is insensitive to minor changes to the optical pathlengths and transit times of the Doppler shifted light, which promises a number of practical advantages in imaging velocimetry applications. The single-point RALF proof-ofconcept apparatus described here is fiber optic based, and our most recent modifications include the incorporation of a larger bandwidth detection system, and a second 780 nm laser for simultaneous upshifted-PDV (UPDV) measurements. We report results for the laser driven launch of a 10-μm-thick aluminum flyer which show good agreement between the RALF and UPDV velocity profiles, within the limitations of the admittedly poor signal:noise ratio (SNR) RALF data. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RUBIDIUM KW - ALKALI metals KW - DOPPLER velocimetry KW - FLUID dynamic measurements KW - TRANSMISSION of light N1 - Accession Number: 120822376; Fajardo, Mario E. 1; Email Address: mario.fajardo@eglin.af.mil Molek, Christopher D. 1 Vesely, Annamaria L. 1; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Ordnance Division, Energetic Materials Branch, AFRL/RWME, 2306 Perimeter Road, Eglin AFB, FL 32542-5910, USA; Source Info: 1/10/2017, Vol. 1793, p1; Subject Term: RUBIDIUM; Subject Term: ALKALI metals; Subject Term: DOPPLER velocimetry; Subject Term: FLUID dynamic measurements; Subject Term: TRANSMISSION of light; Number of Pages: 4p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.4971751 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120822376&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hardin, D. Barrett AU - Min Zhou AU - Yasuyuki Horie T1 - Ignition Behavior of an Aluminum-Bonded Explosive (ABX). JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/01/10/ VL - 1793 M3 - Article SP - 1 EP - 5 SN - 0094243X AB - We report the results of a study on the ignition behavior of a novel concept and design of a heterogeneous energetic material system called ABX, or aluminum-bonded explosives. The idea is to replace the polymeric binder in polymer-bonded explosives (PBX) with aluminum. The motivation of this study is that a new design may have several desirable attributes, including, among others, electrical conductivity, higher mechanical strength, enhanced integrity, higher energy content, and enhanced thermal stability at elevated temperatures. The analysis carried out concerns the replacement of the Estane binder in a HMX/Estane PBX by aluminum. The HMX volume fraction in the PBX and HMX is approximately 81%. 2D mesoscale simulations are carried out, accounting for elasticity, viscoelasticity, elastoviscoplasticity, fracture, internal friction, and thermal conduction. Results show that, relative to the PBX, the aluminum bonded explosives (ABX) show significantly less heating and lower ignition sensitivity under the same loading conditions. The findings appear to confirm the expected promise of ABX as a next-generation heterogeneous energetic material system with more desirable attributes. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXPLOSIVES KW - ALUMINUM KW - IGNITION temperature KW - POLYMERS KW - THERMAL stability N1 - Accession Number: 120822140; Hardin, D. Barrett 1; Email Address: david.hardin.6@us.af.mil Min Zhou 2; Email Address: min.zhou@me.gatech.edu Yasuyuki Horie 3; Affiliation: 1: Energetic Materials Branch, Air Force Research Laboratory, Eglin AFB, FL. USA 2: The George Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA.USA 3: (Emeritus, retired) Air Force Research Laboratory, Eglin AFB, FL.USA; Source Info: 1/10/2017, Vol. 1793, p1; Subject Term: EXPLOSIVES; Subject Term: ALUMINUM; Subject Term: IGNITION temperature; Subject Term: POLYMERS; Subject Term: THERMAL stability; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325920 Explosives Manufacturing; Number of Pages: 5p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.4971507 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120822140&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hardin, D. Barrett AU - Min Zhou T1 - Effect of Viscoplasticity on Ignition Sensitivity of an HMX Based PBX. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/01/10/ VL - 1793 M3 - Article SP - 1 EP - 5 SN - 0094243X AB - The effect of viscoplastic deformation of the energetic component (HMX) on the mechanical, thermal, and ignition responses of a two-phase (HMX and Estane) PBX is analyzed. PBX microstructures are subjected to impact loading from a constant velocity piston traveling at a rate of 50 to 200 m/s. The analysis uses a 2D cohesive finite element framework, the focus of which is to evaluate the relative ignition sensitivity of the materials to determine the effect of the viscoplasticity of HMX on the responses. To delineate this effect, two sets of calculations are carried out; one set assumes the HMX grains are fully hyperelastic, and the other set assumes the HMX grains are elastic-viscoplastic. Results show that PBX specimens with elastic-viscoplastic HMX grains experience lower average and peak temperature rises, and as a result, show lower numbers of hotspots. An ignition criterion based on a criticality threshold obtained from chemical kinetics is used to quantify the ignition behavior of the materials. The criterion focuses on hotspot size and temperature to determine if a hotspot will undergo thermal runaway. It is found that the viscoplasticity of HMX increases the minimum load duration, mean load duration, threshold loading velocity, and total input energy required for ignition. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VISCOPLASTICITY KW - VISCOSITY KW - MICROSTRUCTURE KW - CHEMICAL kinetics KW - MANUFACTURING processes N1 - Accession Number: 120822241; Hardin, D. Barrett 1; Email Address: david.hardin.6@us.af.mil Min Zhou 2; Email Address: min.zhou@me.gatech.edu; Affiliation: 1: Energetic Materials Branch, Air Force Research Laboratory, Eglin AFB, FL, USA 2: The George Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA; Source Info: 1/10/2017, Vol. 1793, p1; Subject Term: VISCOPLASTICITY; Subject Term: VISCOSITY; Subject Term: MICROSTRUCTURE; Subject Term: CHEMICAL kinetics; Subject Term: MANUFACTURING processes; NAICS/Industry Codes: 333994 Industrial Process Furnace and Oven Manufacturing; NAICS/Industry Codes: 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables; Number of Pages: 5p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.4971611 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120822241&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lindsay, C. Michael AU - Fajardo, Mario E. T1 - The Quest for Greater Chemical Energy Storage in Energetic Materials: Grounding Expectations. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/01/10/ VL - 1793 M3 - Article SP - 1 EP - 10 SN - 0094243X AB - It is well known that the performance of modern energetic materials based on organic chemistry has plateaued, with only ~ 40% improvements realized over the past half century. This fact has stimulated research on alternative chemical energy storage schemes in various U.S. government funded "High Energy Density Materials" (HEDM) programs since the 1950's. These efforts have examined a wide range of phenomena such as free radical stabilization, metallic hydrogen, metastable helium, polynitrogens, extended molecular solids, nanothermites, and others. In spite of the substantial research investments, significant improvements in energetic material performance have not been forthcoming. This paper discusses the lessons learned in the various HEDM programs, the different degrees of freedom in which to store energy in materials, and the fundamental limitations and orders of magnitude of the energies involved. The discussion focuses almost exclusively on the topic of energy density and only mentions in passing other equally important properties of explosives and propellants such as gas generation and reaction rate. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXPLOSIVES KW - CHEMICAL energy KW - ENERGY storage KW - ORGANIC chemistry KW - HYDROGEN N1 - Accession Number: 120822150; Lindsay, C. Michael 1; Email Address: c.lindsay@us.af.mil Fajardo, Mario E. 1; Affiliation: 1: Energetic Materials Branch, Air Force Research Laboratory, 2306 Perimeter Road, Eglin AFB, FL 32542; Source Info: 1/10/2017, Vol. 1793, p1; Subject Term: EXPLOSIVES; Subject Term: CHEMICAL energy; Subject Term: ENERGY storage; Subject Term: ORGANIC chemistry; Subject Term: HYDROGEN; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 10p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.4971517 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120822150&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Molek, C. D. AU - Welle, E. J. AU - Wixom, R. R. AU - Ritchey, M. B. AU - Samuels, P. AU - Horie, Y. T1 - Microstructural Characterization of Pressed HMX Material Sets at Differing Densities. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/01/10/ VL - 1793 M3 - Article SP - 1 EP - 5 SN - 0094243X AB - The detonation physics community has embraced the idea that initiation of high explosives (HE) proceeds from an ignition event through subsequent growth to steady detonation. A weakness of all the commonly used ignition and growth models is the microstructural characteristics of the HE are not explicitly incorporated in their ignition and growth terms. This is the case in spite of a demonstrated, but not well-understood, empirical link between particle morphology and initiation of HE. Morphological effects have been parametrically studied in many ways, the majority of efforts focus on establishing a tie between bulk powder metrics and initiation of the pressed beds. More recently, there has been a shift toward characterizing the microstructure of pressed beds in order to understand the underlying mechanisms governing initiation behavior. In this work, we have characterized the microstructures of two HMX classes pressed at three densities using ion bombardment techniques. We find more significant compaction associated with the larger crystalline material - Class 3 - than the smaller fluid energy milled material. The Class 3 material exhibits evidence of crystal cracking. Finally, we discuss this evidence and our attempt to correlate microstructural features to observed changes in continuum level initiation behavior. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DETONATION waves KW - EXPLOSIVES KW - IGNITION temperature KW - MICROSTRUCTURE KW - INITIATION reactions (Chemistry) N1 - Accession Number: 120822134; Molek, C. D. 1; Email Address: christopher.molek@us.af.mil Welle, E. J. 1 Wixom, R. R. 2 Ritchey, M. B. 2 Samuels, P. 3 Horie, Y. 1; Affiliation: 1: Air Force Research Laboratory 2306 Perimeter Road, Eglin AFB 32542, USA 2: Sandia National Laboratories, USA 3: Army Research Development and Engineering Center, USA; Source Info: 1/10/2017, Vol. 1793, p1; Subject Term: DETONATION waves; Subject Term: EXPLOSIVES; Subject Term: IGNITION temperature; Subject Term: MICROSTRUCTURE; Subject Term: INITIATION reactions (Chemistry); NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 5p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.4971501 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120822134&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Neel, Christopher AU - Lacina, David AU - Johnson, Stephanie T1 - Laser Interferometry and Emission Spectroscopy Measurements of Cold-Sprayed Copper Thermite Shocked to 35 GPa. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/01/10/ VL - 1793 M3 - Article SP - 1 EP - 4 SN - 0094243X AB - Plate impact experiments were conducted on a cold-sprayed Al-CuO thermite at peak stresses between 5-35 GPa to determine the Hugoniot curve and characterize any shock induced energetic reaction. Photon Doppler Velocimetry (PDV) measurements were used to obtain particle velocity histories and shock speed information for both the shock loading and unloading behavior of the material. A jump in shock velocity was observed in the Hugoniot curve when the material was shocked beyond 20 GPa, suggesting a volume-increasing reaction occurs in this shocked Al-CuO thermite near 20 GPa. To better characterize any shock-induced thermite reactions, emission spectroscopy measurements were obtained at stresses above 20 GPa. The best time-resolved spectra obtained thus far, at 25 GPa, does not support the fast thermite reaction hypothesis. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXPLOSIVES KW - EMISSION spectroscopy KW - LASER interferometry KW - VELOCIMETRY KW - SHOCK waves N1 - Accession Number: 120822144; Neel, Christopher 1; Email Address: christopher.neel.1@us.af.mil Lacina, David 2 Johnson, Stephanie 1; Affiliation: 1: Air Force Research Laboratory, Munition Directorate, Eglin AFB, FL 32578, USA 2: University of Dayton Research Institute, USA; Source Info: 1/10/2017, Vol. 1793, p1; Subject Term: EXPLOSIVES; Subject Term: EMISSION spectroscopy; Subject Term: LASER interferometry; Subject Term: VELOCIMETRY; Subject Term: SHOCK waves; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 4p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.4971511 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120822144&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sunhee Yoo AU - Crochet, Michael AU - Pemberton, Steven T1 - Modeling Normal Shock Velocity Curvature Relations for Heterogeneous Explosives. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/01/10/ VL - 1793 M3 - Article SP - 1 EP - 5 SN - 0094243X AB - The theory of Detonation Shock Dynamics (DSD) is, in part, an asymptotic method to model a functional form of the relation between the shock normal, its time rate and shock curvature κ. In addition, the shock polar analysis provides a relation between shock angle θ and the detonation velocity Dn that is dependent on the equations of state (EOS) of two adjacent materials. For the axial detonation of an explosive material confined by a cylinder, the shock angle is defined as the angle between the shock normal and the normal to the cylinder liner, located at the intersection of the shock front and cylinder inner wall. Therefore, given an ideal explosive such as PBX-9501 with two functional models determined, a unique, smooth detonation front shape ψcan be determined that approximates the steady state detonation shock front of the explosive. However, experimental measurements of the Dn(κ) relation for heterogeneous explosives such as PBXN-111 [D. K. Kennedy, 2000] are challenging due to the non-smoothness and asymmetry usually observed in the experimental streak records of explosion fronts. Out of many possibilities the asymmetric character may be attributed to the heterogeneity of the explosives; here, material heterogeneity refers to compositions with multiple components and having a grain morphology that can be modeled statistically. Therefore in extending the formulation of DSD to modern novel explosives, we pose two questions: (1) is there any simple hydrodynamic model that can simulate such an asymmetric shock evolution, and (2) what statistics can be derived for the asymmetry using simulations with defined structural heterogeneity in the unreacted explosive? Saenz, Taylor and Stewart [1] studied constitutive models for derivation of the Dn(κ) relation for porous homogeneous explosives and carried out simulations in a spherical coordinate frame. In this paper we extend their model to account for heterogeneity and present shock evolutions in heterogeneous explosives using 2-D hydrodynamic simulations with some statistical examination. As an initial work, we assume that the heterogeneity comes from the local density variation or porosity only. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHOCK waves KW - ASYMPTOTIC expansions KW - EQUATIONS of state KW - EXPLOSIVES KW - DETONATION waves N1 - Accession Number: 120822111; Sunhee Yoo 1,2; Email Address: sunhee.yoo.ctr@us.af.mil Crochet, Michael 2,3; Email Address: michael.crochet.ctr@us.af.mil Pemberton, Steven 2; Email Address: steven.pemberton.1@us.af.mil; Affiliation: 1: JACOBS/TEAS 2: Air Force Research Laboratory/Munitions Directorate 3: University of Dayton Research Institute; Source Info: 1/10/2017, Vol. 1793, p1; Subject Term: SHOCK waves; Subject Term: ASYMPTOTIC expansions; Subject Term: EQUATIONS of state; Subject Term: EXPLOSIVES; Subject Term: DETONATION waves; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 5p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.4971478 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120822111&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wilson, Dennis AU - Granier, John AU - Johnson, Richard AU - Littrell, Donald T1 - Shock Initiated Reactions of Reactive Multi-phase Blast Explosives. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/01/10/ VL - 1793 M3 - Article SP - 1 EP - 4 SN - 0094243X AB - This paper describes a new class of non-ideal explosive compositions made of perfluoropolyether (PFPE), nanoaluminum, and a micron-size, high mass density, reactive metal. Unlike high explosives, these compositions release energy via a fast self-oxidized combustion wave rather than a true self-sustaining detonation. Their reaction rates are shock dependent and they can be overdriven to change their energy release rate. These compositions are fuel rich and have an extended aerobic energy release phase. The term "reactive multiphase blast" refers to the post-dispersion blast behavior: multiphase in that there are a gas phase that imparts pressure and a solid (particulate) phase that imparts energy and momentum [1]; and reactive in that the hot metal particles react with atmospheric oxygen and the explosive gas products to give an extended pressure pulse. Tantalum-based RMBX formulations were tested in two spherical core-shell configurations - an RMBX shell exploded by a high explosive core, and an RMBX core imploded by a high explosive shell. The fireball and blast characteristics were compared to a C-4 baseline charge. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXPLOSIVES KW - SHOCK waves KW - MASS density gradients KW - PARTICULATE matter KW - BLAST effect N1 - Accession Number: 120822107; Wilson, Dennis 1; Email Address: Dennis.Wilson@empi-inc.com Granier, John 1 Johnson, Richard 1 Littrell, Donald 2; Affiliation: 1: Energetic Materials and Products, Inc., 1413 Brandi Lane, Round Rock, TX 78681 USA 2: Air Force Research Laboratory, Munitions Directorate, 101 W. Eglin Blvd., Eglin Air Force Base, FL 32542 USA; Source Info: 1/10/2017, Vol. 1793, p1; Subject Term: EXPLOSIVES; Subject Term: SHOCK waves; Subject Term: MASS density gradients; Subject Term: PARTICULATE matter; Subject Term: BLAST effect; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 4p; Illustrations: 1 Color Photograph, 4 Diagrams, 1 Graph; Document Type: Article L3 - 10.1063/1.4971474 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120822107&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wilson, Dennis AU - Granier, John AU - Johnson, Richard AU - Littrell, Donald T1 - Characterization of Shock-dependent Reaction Rates in an Aluminum/Perfluoropolyether Pyrolant. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2017/01/10/ VL - 1793 M3 - Article SP - 1 EP - 4 SN - 0094243X AB - Energetic formulations of perfluoropolyether (PFPE) and aluminum are highly non-ideal. They release energy via a fast self-oxidized combustion wave rather than a true self-sustaining detonation. Unlike high explosives, the reactions are shock dependent and can be overdriven to control energy release rate. Reaction rate experiments show that the velocity can vary from 1.25 to 3 km/s. This paper examines the effect of the initial shock conditions upon the reaction rate of the explosive. The following conditions were varied in a series of reaction rate experiments: the high explosive booster mass and geometry; shock attenuation; confinement; and rate stick diameter and length. Several experiments designed to isolate and quantify these dependencies are described and summarized. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL kinetics KW - SHOCK waves KW - EXPLOSIVES KW - VELOCITY KW - ATTENUATION (Physics) N1 - Accession Number: 120822121; Wilson, Dennis 1; Email Address: Dennis.Wilson@empi-inc.com Granier, John 1 Johnson, Richard 1 Littrell, Donald 2; Affiliation: 1: Energetic Materials and Products, Inc., 1413 Brandi Lane, Round Rock, TX 78681 2: Air Force Research Laboratory, Munitions Directorate, 101 W. Eglin Blvd., Eglin Air Force Base, FL 32542; Source Info: 1/10/2017, Vol. 1793, p1; Subject Term: CHEMICAL kinetics; Subject Term: SHOCK waves; Subject Term: EXPLOSIVES; Subject Term: VELOCITY; Subject Term: ATTENUATION (Physics); NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325920 Explosives Manufacturing; Number of Pages: 4p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.4971488 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120822121&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mauger, L. AU - Herriman, J. E. AU - Hellman, O. AU - Tracy, S. J. AU - Lucas, M. S. AU - Muñoz, J. A. AU - Yuming Xiao AU - Li, J. AU - Fultz, B. T1 - Phonons and elasticity of cementite through the Curie temperature. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2017/01/08/ VL - 95 IS - 2 M3 - Article SP - 1 EP - 1 SN - 10980121 AB - Phonon partial densities of states (pDOS) of 57Fe3C were measured from cryogenic temperatures through the Curie transition at 460 K using nuclear resonant inelastic x-ray scattering. The cementite pDOS reveal that low-energy acoustic phonons shift to higher energies (stiffen) with temperature before the magnetic transition. This unexpected stiffening suggests strongly nonharmonic vibrational behavior that impacts the thermodynamics and elastic properties of cementite. Density functional theory calculations reproduced the anomalous stiffening observed experimentally in cementite by accounting for phonon-phonon interactions at finite temperatures. The calculations show that the low-energy acoustic phonon branches with polarizations along the [010] direction are largely responsible for the anomalous thermal stiffening. The effect was further localized to the motions of the FeII site within the orthorhombic structure, which participates disproportionately in the anomalous phonon stiffening. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CURIE temperature KW - CEMENTITE KW - ELASTICITY KW - MAUGER, L. KW - HERRIMAN, J. E. KW - HELLMAN, O. KW - TRACY, S. J. KW - LUCAS, M. S. KW - MUNOZ, J. A. KW - XIAO, Yuming KW - LI, J. KW - PHYSICAL Review (Periodical) N1 - Accession Number: 121180398; Mauger, L. 1 Herriman, J. E. 1 Hellman, O. 1 Tracy, S. J. 1 Lucas, M. S. 2 Muñoz, J. A. 1 Yuming Xiao 3 Li, J. 4 Fultz, B. 1; Affiliation: 1: California Institute of Technology, W. M. Keck Laboratory 138-78, Pasadena, California 91125, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 3: HPCAT, Geophysical Laboratory, Carnegie Institute of Washington, Argonne, Illinois 60439, USA 4: Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA; Source Info: Jan2017, Vol. 95 Issue 2, p1; Subject Term: CURIE temperature; Subject Term: CEMENTITE; Subject Term: ELASTICITY; Reviews & Products: PHYSICAL Review (Periodical); People: MAUGER, L.; People: HERRIMAN, J. E.; People: HELLMAN, O.; People: TRACY, S. J.; People: LUCAS, M. S.; People: MUNOZ, J. A.; People: XIAO, Yuming; People: LI, J.; Number of Pages: 1p; Document Type: Article L3 - 10.1103/PhysRevB.95.024308 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121180398&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CASE AU - Rouse, Christopher AU - Schmidt, Luke AU - Brock, Lee AU - Fagiana, Angela T1 - Congenital Diaphragmatic Hernia Presenting in a 7-Day-Old Infant. JO - Case Reports in Emergency Medicine JF - Case Reports in Emergency Medicine Y1 - 2017/01/04/ M3 - Case Study SP - 1 EP - 3 PB - Hindawi Publishing Corporation SN - 2090648X AB - A 7-day-old male infant presented to the emergency room after respiratory distress was noted at an outpatient well child check. On exam, he was observed to have tachypnea, increased work of breathing, and decreased breath sounds on the left side of the chest. On chest X-ray, he was found to have a left-sided congenital diaphragmatic hernia. The infant was transported to a tertiary care facility where the defect was repaired without complication. Interestingly, the mother had a history of a normal antenatal ultrasound, completed at 19 + 2 weeks of gestational age. This case report summarizes the challenges of diagnosing late-presenting congenital diaphragmatic hernia, associated malformations, possible etiologies, and prognosis. [ABSTRACT FROM AUTHOR] AB - Copyright of Case Reports in Emergency Medicine is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIAPHRAGMATIC hernia KW - INFANT diseases KW - RESPIRATORY distress syndrome KW - OUTPATIENT medical care KW - TACHYPNEA KW - GESTATIONAL age KW - CASE studies N1 - Accession Number: 120551122; Rouse, Christopher 1,2,3 Schmidt, Luke 4 Brock, Lee 5 Fagiana, Angela 5; Affiliation: 1: Department of Pediatrics, Walter Reed National Military Medical Center, Bethesda, MD, USA 2: Department of Pediatrics, Uniformed Services University of Health Sciences, Bethesda, MD, USA 3: 779th Medical Operations Squadron, Joint Base Andrews, Prince George’s County, MD, USA 4: Drexel University College of Medicine, Philadelphia, PA, USA 5: United States Air Force Medical Service, Washington, DC, USA; Source Info: 1/4/2017, p1; Subject Term: DIAPHRAGMATIC hernia; Subject Term: INFANT diseases; Subject Term: RESPIRATORY distress syndrome; Subject Term: OUTPATIENT medical care; Subject Term: TACHYPNEA; Subject Term: GESTATIONAL age; Subject Term: CASE studies; NAICS/Industry Codes: 621494 Community health centres; NAICS/Industry Codes: 621498 All Other Outpatient Care Centers; NAICS/Industry Codes: 621499 All other out-patient care centres; Number of Pages: 3p; Document Type: Case Study L3 - 10.1155/2017/9175710 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120551122&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jewell, Joseph S. AU - Parziale, Nicholaus J. AU - Leyva, Ivett A. AU - Shepherd, Joseph E. T1 - Effects of Shock-Tube Cleanliness on Hypersonic Boundary Layer Transition at High Enthalpy. JO - AIAA Journal JF - AIAA Journal Y1 - 2017/01// VL - 55 IS - 1 M3 - Article SP - 332 EP - 338 SN - 00011452 N1 - Accession Number: 120623804; Jewell, Joseph S. 1 Parziale, Nicholaus J. 2 Leyva, Ivett A. 3 Shepherd, Joseph E. 4; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Stevens Institute of Technology, Hoboken, New Jersey 07030 3: U.S. Air Force Office of Scientific Research, Arlington Air Force Base, Virginia 22203 4: California Institute of Technology, Pasadena, California 91125; Source Info: Jan2017, Vol. 55 Issue 1, p332; Number of Pages: 7p; Document Type: Article L3 - 10.2514/1.J054897 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120623804&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - BRAKEL, YVONNE S. T1 - DEVELOPING BETTER U.S. STATUS OF FORCES PROTECTIONS IN AFRICA. JO - Air Force Law Review JF - Air Force Law Review Y1 - 2017/01// VL - 76 M3 - Article SP - 207 EP - 265 PB - Superintendent of Documents SN - 00948381 AB - The article focuses on the national security and foreign relations of the U.S. and Africa, and mentions developing better U.S. status of forces protections in Africa. Topics discussed include preventing the conclusion of a multilateral status of forces agreement (SOFA) within the Trans-Sahara Counterterrorism Partnership (TSCTP); problems that can arise when sending U.S. forces into countries with which the U.S. has not negotiated a SOFA; and North Atlantic Treaty Organization (NATO) model. KW - NATIONAL security -- United States KW - STATUS of forces agreements KW - ARMED Forces KW - AFRICA -- Foreign relations -- United States KW - NORTH Atlantic Treaty Organization N1 - Accession Number: 121187771; BRAKEL, YVONNE S. 1,2; Affiliation: 1: Air Force judge advocate. 2: Dean of Faculty Department of Law, United States Air Force Academy.; Source Info: 2017, Vol. 76, p207; Subject Term: NATIONAL security -- United States; Subject Term: STATUS of forces agreements; Subject Term: ARMED Forces; Subject Term: AFRICA -- Foreign relations -- United States; Company/Entity: NORTH Atlantic Treaty Organization; NAICS/Industry Codes: 928110 National Security; Number of Pages: 59p; Illustrations: 1 Chart; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121187771&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beran, Philip AU - Stanford, Bret AU - Schrock, Christopher T1 - Uncertainty Quantification in Aeroelasticity. JO - Annual Review of Fluid Mechanics JF - Annual Review of Fluid Mechanics Y1 - 2017/01// VL - 49 IS - 1 M3 - Article SP - 361 EP - 386 SN - 00664189 AB - Physical interactions between a fluid and structure, potentially manifested as self-sustained or divergent oscillations, can be sensitive to many parameters whose values are uncertain. Of interest here are aircraft aeroelastic interactions, which must be accounted for in aircraft certification and design. Deterministic prediction of these aeroelastic behaviors can be difficult owing to physical and computational complexity. New challenges are introduced when physical parameters and elements of the modeling process are uncertain. By viewing aeroelasticity through a nondeterministic prism, where key quantities are assumed stochastic, one may gain insights into how to reduce system uncertainty, increase system robustness, and maintain aeroelastic safety. This article reviews uncertainty quantification in aeroelasticity using traditional analytical techniques not reliant on computational fluid dynamics; compares and contrasts this work with emerging methods based on computational fluid dynamics, which target richer physics; and reviews the state of the art in aeroelastic optimization under uncertainty. Barriers to continued progress, for example, the so-called curse of dimensionality, are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Annual Review of Fluid Mechanics is the property of Annual Reviews Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - aeroelasticity KW - design under uncertainty KW - flutter KW - limit-cycle oscillation KW - polynomial chaos KW - reliability KW - uncertainty quantification N1 - Accession Number: 120571332; Beran, Philip 1 Stanford, Bret 2 Schrock, Christopher 3; Affiliation: 1: Multidisciplinary Science and Technology Center, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; email: 2: Aeroelasticity Branch, NASA Langley Research Center, Hampton, Virginia 23681; email: 3: Computational Sciences Center, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; email:; Source Info: Jan2017, Vol. 49 Issue 1, p361; Author-Supplied Keyword: aeroelasticity; Author-Supplied Keyword: design under uncertainty; Author-Supplied Keyword: flutter; Author-Supplied Keyword: limit-cycle oscillation; Author-Supplied Keyword: polynomial chaos; Author-Supplied Keyword: reliability; Author-Supplied Keyword: uncertainty quantification; Number of Pages: 21p; Document Type: Article L3 - 10.1146/annurev-fluid-122414-034441 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120571332&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Johnson, Stephanie AU - Clemenson, Michael AU - Glumac, Nick T1 - Simultaneous Imaging and Spectroscopy of Detonation Interaction in Reactive and Energetic Materials. JO - Applied Spectroscopy JF - Applied Spectroscopy Y1 - 2017/01// VL - 71 IS - 1 M3 - Article SP - 78 EP - 86 SN - 00037028 AB - A dual framing camera system was coupled with custom-designed ultrafast imaging spectrometer optics to yield simultaneous imaging and imaging spectroscopy of extremely short detonation interaction events in reactive materials. For short exposures of 100 ns or less, spectral resolutions of 2.4Å are achievable, allowing for time-resolved identification of key intermediate species evolving from prompt reaction. Under some circumstances, emission can be fit to a local emission temperature, assuming the optically thin limit. Applications to reactive metal systems involving aluminum, magnesium, titanium, boron, and silicon are demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Spectroscopy is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRUM analysis KW - IMAGING systems KW - ACOUSTIC phenomena in nature KW - SPECTROMETERS KW - ALUMINUM KW - Detonation chemistry KW - energetic materials spectroscopy KW - optical and spectroscopic imaging array KW - reactive materials spectroscopy KW - simultaneous imaging and spectroscopy KW - spatially resolved spectroscopy KW - temporally resolved spectroscopy KW - ultrafast imaging spectrometer N1 - Accession Number: 120717656; Johnson, Stephanie 1; Email Address: stephanie.johnson.20@us.af.mil Clemenson, Michael 2 Glumac, Nick 2; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Eglin Air Force Base, FL, USA 2: Mechanical Science and Engineering Department, University of Illinois, Urbana-Champaign, IL, USA; Source Info: Jan2017, Vol. 71 Issue 1, p78; Subject Term: SPECTRUM analysis; Subject Term: IMAGING systems; Subject Term: ACOUSTIC phenomena in nature; Subject Term: SPECTROMETERS; Subject Term: ALUMINUM; Author-Supplied Keyword: Detonation chemistry; Author-Supplied Keyword: energetic materials spectroscopy; Author-Supplied Keyword: optical and spectroscopic imaging array; Author-Supplied Keyword: reactive materials spectroscopy; Author-Supplied Keyword: simultaneous imaging and spectroscopy; Author-Supplied Keyword: spatially resolved spectroscopy; Author-Supplied Keyword: temporally resolved spectroscopy; Author-Supplied Keyword: ultrafast imaging spectrometer; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1177/0003702816661726 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120717656&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anderson, Jamie E. AU - Neff, Lucas P. AU - Choi, Daniel X. T1 - Breast Disease Treatment in a US Military Hospital in Afghanistan. JO - Breast Journal JF - Breast Journal Y1 - 2017/01//Jan/Feb2017 VL - 23 IS - 1 M3 - Article SP - 116 EP - 117 SN - 1075122X AB - A letter to the editor is presented concerning the treatment of Afghan women undergoing breast surgery from January 23, 2011 to September 17, 2014 at Craig Joint Theater Hospital on Bagram Airfield in Kabul, Afghanistan. KW - BREAST tumors KW - PROGNOSIS KW - CANCER patients -- Medical care KW - MILITARY hospitals KW - TREATMENT effectiveness KW - DATA analysis -- Software KW - DESCRIPTIVE statistics KW - SYMPTOMS KW - AFGHANISTAN N1 - Accession Number: 120533744; Anderson, Jamie E. 1 Neff, Lucas P. 1,2 Choi, Daniel X. 2; Affiliation: 1: Department of General Surgery, University of California, Davis 2: United States Air Force; Source Info: Jan/Feb2017, Vol. 23 Issue 1, p116; Subject Term: BREAST tumors; Subject Term: PROGNOSIS; Subject Term: CANCER patients -- Medical care; Subject Term: MILITARY hospitals; Subject Term: TREATMENT effectiveness; Subject Term: DATA analysis -- Software; Subject Term: DESCRIPTIVE statistics; Subject Term: SYMPTOMS; Subject Term: AFGHANISTAN; NAICS/Industry Codes: 622310 Specialty (except Psychiatric and Substance Abuse) Hospitals; NAICS/Industry Codes: 622111 General (except paediatric) hospitals; Number of Pages: 2p; Document Type: Article L3 - 10.1111/tbj.12698 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120533744&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 120533744 T1 - Breast Disease Treatment in a US Military Hospital in Afghanistan. AU - Anderson, Jamie E. AU - Neff, Lucas P. AU - Choi, Daniel X. Y1 - 2017/01//Jan/Feb2017 N1 - Accession Number: 120533744. Language: English. Entry Date: 20170109. Revision Date: 20170109. Publication Type: Article. Journal Subset: Biomedical; Blind Peer Reviewed; Editorial Board Reviewed; Peer Reviewed; USA. NLM UID: 9505539. KW - Oncologic Care KW - Breast Neoplasms -- Surgery -- Afghanistan KW - Treatment Outcomes KW - Breast Neoplasms -- Prognosis KW - Human KW - Female KW - Adult KW - Middle Age KW - Aged KW - Afghanistan KW - Descriptive Statistics KW - Data Analysis Software KW - Breast Neoplasms -- Symptoms KW - Hospitals, Military -- Afghanistan KW - Inpatients KW - Outpatients SP - 116 EP - 117 JO - Breast Journal JF - Breast Journal JA - BREAST J VL - 23 IS - 1 CY - Malden, Massachusetts PB - Wiley-Blackwell SN - 1075-122X AD - Department of General Surgery, University of California, Davis AD - United States Air Force DO - 10.1111/tbj.12698 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=120533744&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 120700033 T1 - Indices of Effortful Listening Can Be Mined from Existing Electroencephalographic Data. AU - Wisniewski, Matthew G. Y1 - 2017/01//Jan/Feb2017 N1 - Accession Number: 120700033. Language: English. Entry Date: In Process. Revision Date: 20170207. Publication Type: Article. Journal Subset: Allied Health; Biomedical; Peer Reviewed; USA. NLM UID: 8005585. SP - e69 EP - e73 JO - Ear & Hearing (01960202) JF - Ear & Hearing (01960202) JA - EAR HEAR VL - 38 IS - 1 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 0196-0202 AD - U.S. Air Force Research Laboratory, Wright Patterson Air Force Base, OH, USA UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=120700033&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Sutton, M. AU - Matta, F. AU - Rizos, D. AU - Ghorbani, R. AU - Rajan, S. AU - Mollenhauer, D. AU - Schreier, H. AU - Lasprilla, A. T1 - Recent Progress in Digital Image Correlation: Background and Developments since the 2013 W M Murray Lecture. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2017/01// VL - 57 IS - 1 M3 - Article SP - 1 EP - 30 SN - 00144851 AB - Since presentation of the 2013 Murray Lecture focusing on developments in digital image correlation (DIC), the methods have continued to expand internationally and their use has begun to grow in fields where there was less activity in the past. First, a brief history of digital image correlation methods is presented from the perspective of the first author, followed by a discussion of recent trends associated with the use of digital image correlation methods in academics, governmental laboratories and industrial settings. In the remainder of the article, new results are provided in three areas where DIC methods have seen rapid growth; application of StereoDIC or three-dimensional DIC (3D-DIC) to the study of wall structures in civil engineering; the use of Volumetric DIC or Digital Volume Correlation (DVC) to quantify the internal response of a specially-designed composite material and in the area of model validation for another application in civil engineering; transfer length measurements in pre-stressed concrete beams. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIGITAL image correlation KW - FIBROUS composites KW - CIVIL engineering KW - MASONRY KW - COMPOSITE materials KW - Civil engineering structures including pre-stressed concrete beams and confined masonry walls KW - Fiber reinforced composites KW - History of 2D-DIC and StereoDIC KW - StereoDIC or 3D-DIC KW - Volumet ric DIC or DVC N1 - Accession Number: 120689954; Sutton, M. 1; Email Address: sutton@sc.edu Matta, F. 2 Rizos, D. 2 Ghorbani, R. 3 Rajan, S. 1 Mollenhauer, D. 4 Schreier, H. 5 Lasprilla, A. 6; Affiliation: 1: Department of Mechanical Engineering , University of South Carolina , Columbia 29208 USA 2: Department of Civil and Environmental Engineering , University of South Carolina , Columbia 29208 USA 3: Chao and Associates , 7 Clusters Ct Columbia 29210 USA 4: Composites and Hybrids Branch, Nonmetallic Materials Division, Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright Patterson AFB , Dayton USA 5: Correlated Solutions, Incorporated , 121 Dutchman Blvd Irmo 29063 USA 6: Universidad del Norte , Barranquilla Colombia; Source Info: Jan2017, Vol. 57 Issue 1, p1; Subject Term: DIGITAL image correlation; Subject Term: FIBROUS composites; Subject Term: CIVIL engineering; Subject Term: MASONRY; Subject Term: COMPOSITE materials; Author-Supplied Keyword: Civil engineering structures including pre-stressed concrete beams and confined masonry walls; Author-Supplied Keyword: Fiber reinforced composites; Author-Supplied Keyword: History of 2D-DIC and StereoDIC; Author-Supplied Keyword: StereoDIC or 3D-DIC; Author-Supplied Keyword: Volumet ric DIC or DVC; NAICS/Industry Codes: 541330 Engineering Services; NAICS/Industry Codes: 238140 Masonry Contractors; NAICS/Industry Codes: 327310 Cement Manufacturing; Number of Pages: 30p; Document Type: Article L3 - 10.1007/s11340-016-0233-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120689954&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Garcia, Eloy AU - Cao, Yongcan AU - Casbeer, David W. T1 - Periodic Event-Triggered Synchronization of Linear Multi-Agent Systems With Communication Delays. JO - IEEE Transactions on Automatic Control JF - IEEE Transactions on Automatic Control Y1 - 2017/01// VL - 62 IS - 1 M3 - Article SP - 366 EP - 371 SN - 00189286 AB - Multi-agent systems' cooperation to achieve global goals is usually limited by sensing, actuation, and communication issues. At the local level, continuous measurement and actuation is only approximated by the use of digital mechanisms that measure and process information in order to compute and update new control input values at discrete time instants. Interaction with other agents takes place, in general, through a digital communication channel with limited bandwidth where transmission of continuous-time signals is not possible. This technical note considers the problem of consensus (or synchronization of state trajectories) of multi-agent systems that are described by general linear dynamics and are connected using undirected graphs. The proposed event-triggered consensus protocol not only avoids the need for continuous communication between agents but also provides a decentralized method for transmission of information in the presence of time-varying communication delays, where each agent decides its own broadcasting time instants based only on local information. This method gives more flexibility for scheduling information broadcasting compared to periodic and sampled-data implementations. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Automatic Control is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR systems KW - MATHEMATICAL models KW - COMMAND & control systems KW - INDUSTRIAL controls manufacturing KW - PROGRAMMABLE controllers KW - Broadcasting KW - Consensus KW - Current measurement KW - Delays KW - event-triggered control KW - multi-agent system KW - Multi-agent systems KW - Nickel KW - Synchronization N1 - Accession Number: 120459075; Garcia, Eloy 1 Cao, Yongcan 2 Casbeer, David W. 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, OH, USAUSA 2: Department of Electrical and Computer Engineering, University of Texas at San Antonio, San Antonio, TX, USA 3: Control Science Center of Excellence, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Jan2017, Vol. 62 Issue 1, p366; Subject Term: NONLINEAR systems; Subject Term: MATHEMATICAL models; Subject Term: COMMAND & control systems; Subject Term: INDUSTRIAL controls manufacturing; Subject Term: PROGRAMMABLE controllers; Author-Supplied Keyword: Broadcasting; Author-Supplied Keyword: Consensus; Author-Supplied Keyword: Current measurement; Author-Supplied Keyword: Delays; Author-Supplied Keyword: event-triggered control; Author-Supplied Keyword: multi-agent system; Author-Supplied Keyword: Multi-agent systems; Author-Supplied Keyword: Nickel; Author-Supplied Keyword: Synchronization; NAICS/Industry Codes: 335315 Switchgear and switchboard, and relay and industrial control apparatus manufacturing; NAICS/Industry Codes: 335314 Relay and Industrial Control Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TAC.2016.2555484 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120459075&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pavlidis, Georges AU - Pavlidis, Spyridon AU - Heller, Eric R. AU - Moore, Elizabeth A. AU - Vetury, Ramakrishna AU - Graham, Samuel T1 - Characterization of AlGaN/GaN HEMTs Using Gate Resistance Thermometry. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices Y1 - 2017/01// VL - 64 IS - 1 M3 - Article SP - 78 EP - 83 SN - 00189383 AB - In this paper, gate resistance thermometry (GRT) was used to determine the channel temperature of AlGaN/GaN high electron-mobility transistors. Raman thermometry has been used to verify GRT by comparing the channel temperatures measured by both techniques under various bias conditions. To further validate this technique, a thermal finite-element model has been developed to model the heat dissipation throughout the devices. Comparisons show that the GRT method averages the temperature over the gate width, yielding a slightly lower peak temperature than Raman thermography. Overall, this method provides a fast and simple technique to determine the average temperature under both steady-state and pulsed bias conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESISTANCE thermometers KW - THERMOMETRY KW - TEMPERATURE measurements KW - DIGITAL electronics KW - LOGIC circuits KW - Density measurement KW - Electrical resistance measurement KW - GaN KW - gate resistance thermometry (GRT) KW - HEMTs KW - high electron-mobility transistor (HEMT) KW - Logic gates KW - Power system measurements KW - Raman spectroscopy KW - Resistance KW - surface temperature indicators KW - Temperature measurement KW - thermal characterization KW - transient analysis N1 - Accession Number: 120459027; Pavlidis, Georges 1 Pavlidis, Spyridon 2 Heller, Eric R. 3 Moore, Elizabeth A. 4 Vetury, Ramakrishna 5 Graham, Samuel 1; Affiliation: 1: The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA 2: S. Pavlidis is currently with the School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH, USA 4: KBRwyle, Dayton, OH, USA 5: Akoustis Technologies, Inc., Huntsville, NC, USA; Source Info: Jan2017, Vol. 64 Issue 1, p78; Subject Term: RESISTANCE thermometers; Subject Term: THERMOMETRY; Subject Term: TEMPERATURE measurements; Subject Term: DIGITAL electronics; Subject Term: LOGIC circuits; Author-Supplied Keyword: Density measurement; Author-Supplied Keyword: Electrical resistance measurement; Author-Supplied Keyword: GaN; Author-Supplied Keyword: gate resistance thermometry (GRT); Author-Supplied Keyword: HEMTs; Author-Supplied Keyword: high electron-mobility transistor (HEMT); Author-Supplied Keyword: Logic gates; Author-Supplied Keyword: Power system measurements; Author-Supplied Keyword: Raman spectroscopy; Author-Supplied Keyword: Resistance; Author-Supplied Keyword: surface temperature indicators; Author-Supplied Keyword: Temperature measurement; Author-Supplied Keyword: thermal characterization; Author-Supplied Keyword: transient analysis; NAICS/Industry Codes: 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TED.2016.2625264 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120459027&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alyanak, Edward J. AU - Pendleton, Ed T1 - Aeroelastic Tailoring and Active Aeroelastic Wing Impact on a Lambda Wing Configuration. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2017/01// VL - 54 IS - 1 M3 - Article SP - 11 EP - 19 SN - 00218669 AB - Two aeroelastic design approaches are applied to a supersonic lambda wing configuration with the goal of improving the wing's aeroelastic performance. Aeroelastic tailoring and active aeroelastic wing technologies are investigated in a sequential manner to quantify their benefits. Industry-standard tools are used to perform these design studies. First, a finite element model of a lambda wing is developed. Second, eight structural variants of the finite element model are created to study variations in wing stiffness. Finally, two sizing optimization processes are applied. The first is an aeroelastic sizing approach standard to MSC NASTRAN, and the second is an active aeroelastic wing design process, which is presented in this paper. The latter process integrates control and structural sizing design variables together. Both of these processes are used to size all eight structural variants. The optimized variants are compared based on weight and control surface effectiveness. Additionally, the optimal variations in percent ply utilization over the wing for the lightest weight concept are explored. It is found that applying aeroelastic tailoring simultaneously with active aeroelastic wing has the potential to reduce the aircraft gross takeoff weight by 7% in lambda wing configurations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 121703087; Alyanak, Edward J. 1 Pendleton, Ed 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jan2017, Vol. 54 Issue 1, p11; Number of Pages: 9p; Document Type: Article L3 - 10.2514/1.C033040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121703087&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 120604879 T1 - Noninvasive Techniques for the Determination of Burn Severity in Real Time. AU - Burmeister, David M. AU - Cerna, Cesario AU - Becerra, Sandra C. AU - Sloan, Mark AU - Wilmink, Gerald AU - Christy, Robert J. Y1 - 2017/01//Jan/Feb2017 N1 - Accession Number: 120604879. Language: English. Entry Date: In Process. Revision Date: 20170112. Publication Type: journal article. Journal Subset: Allied Health; Biomedical; Peer Reviewed; USA. NLM UID: 101262774. SP - e180 EP - e191 JO - Journal of Burn Care & Research JF - Journal of Burn Care & Research JA - J BURN CARE RES VL - 38 IS - 1 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - Visual diagnosis of second-degree burns has proven inadequate for determining the appropriate treatment regimen. Although multiple noninvasive imaging techniques have shown promise for providing information about burn wound severity, the ideal technology to aid burn wound excision would provide real-time readouts. Herein, the authors examine a high-resolution infrared (IR) camera (thermography) and a multiprobe adapter system (MPAS-6; transepidermal evaporative water loss, colorimetry) to assess their usefulness in predicting burn severity. Contact burn wounds of increasing severity were created in a porcine model. Wounds were assessed for 4 days with an IR camera and MPAS-6. In addition, each day, the burn wounds were biopsied for histological analysis to determine burn depth for correlation with noninvasive measures. Surface temperatures decreased with increasing burn severity, which was associated with increasing transepidermal evaporative water loss. Melanin content correlated with the depth of collagen coagulation and was bimodal, with superficial and full-thickness burns having higher values than deep partial thickness wounds. Erythema content was highest in superficial burns and negatively correlated with necrosis (high-mobility group box protein 1 expression). Importantly, surface temperature taken on every single day after injury was predictive of all histologically determined measurements of burn depth (ie, collagen coagulation, apoptosis, necrosis, vascular occlusion). The results indicate that IR imaging and skin quality probes can be used to support the diagnosis of burn severity. Most importantly, IR measurements gave insight into both the zone of coagulation and the zone of stasis on every postburn day studied. SN - 1559-047X AD - Combat Trauma and Burn Injury Research, United States Army Institute of Surgical Research, JBSA Fort Sam Houston, Texas AD - General Dynamics Information Technology, JBSA Fort Sam Houston, Texas AD - Bioeffects Division, Radio Frequency Bioeffects Branch, Air Force Research Laboratory, Human Effectiveness Directorate, JBSA Fort Sam Houston, Texas U2 - PMID: 27355653. DO - 10.1097/BCR.0000000000000338 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=120604879&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Stavenga, D. AU - Meglič, A. AU - Pirih, P. AU - Koshitaka, H. AU - Arikawa, K. AU - Wehling, M. AU - Belušič, G. T1 - Photoreceptor spectral tuning by colorful, multilayered facet lenses in long-legged fly eyes (Dolichopodidae). JO - Journal of Comparative Physiology A: Neuroethology, Sensory, Neural & Behavioral Physiology JF - Journal of Comparative Physiology A: Neuroethology, Sensory, Neural & Behavioral Physiology Y1 - 2017/01// VL - 203 IS - 1 M3 - Article SP - 23 EP - 33 SN - 03407594 AB - The facet lenses of the compound eyes of long-legged flies (Dolichopodidae) feature a striking, interlaced coloration pattern, existing of alternating rows of green-yellow and orange-red reflecting facets, due to dielectric multilayers located distally in the facet lenses (Bernard and Miller. Invest Ophthalmol 7:416-434 (1968). We investigated this phenomenon in the dolichopodid Dolichopus nitidus by applying microspectrophotometry, electron microscopy and optical modeling. The measured narrow-band reflectance spectra, peaking at ~540 and ~590 nm with bandwidth ~105 nm, are well explained by a refractive index oscillating sinusoidally in six periods around a mean value of about 1.44 with amplitude 0.6. The facet lens reflectance spectra are associated with a spectrally restricted, reduced transmittance, which causes modified spectral sensitivities of the underlying photoreceptors. Based on the modeling and electroretinography of the dolichopodid Condylostylus japonicus we conjecture that the green and orange facets narrow the spectral bandwidths of blue and green central photoreceptors, respectively, thus possibly improving color and/or polarization vision. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Comparative Physiology A: Neuroethology, Sensory, Neural & Behavioral Physiology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTORECEPTORS KW - TUNING (Electronics) KW - LENSES KW - DOLICHOPODIDAE KW - ELECTRORETINOGRAPHY KW - MICROSPECTROPHOTOMETRY KW - Iridescence KW - Photoreceptors KW - Spectral filters KW - Spectral sensitivity KW - Visual pigments N1 - Accession Number: 120927128; Stavenga, D. 1; Email Address: D.G.Stavenga@rug.nl Meglič, A. 2 Pirih, P. 3 Koshitaka, H. 3 Arikawa, K. 3 Wehling, M. 4 Belušič, G. 2; Affiliation: 1: Computational Physics, Zernike Institute for Advanced Materials , University of Groningen , NL9747AG Groningen The Netherlands 2: Biotechnical Faculty , University of Ljubljana , Večna pot 111 1000 Ljubljana Slovenia 3: Laboratory of Neuroethology, Sokendai-Hayama , The Graduate University for Advanced Studies , Hayama 240-0193 Japan 4: Air Force Research Laboratory , Eglin Air Force Base 32542-6810 USA; Source Info: Jan2017, Vol. 203 Issue 1, p23; Subject Term: PHOTORECEPTORS; Subject Term: TUNING (Electronics); Subject Term: LENSES; Subject Term: DOLICHOPODIDAE; Subject Term: ELECTRORETINOGRAPHY; Subject Term: MICROSPECTROPHOTOMETRY; Author-Supplied Keyword: Iridescence; Author-Supplied Keyword: Photoreceptors; Author-Supplied Keyword: Spectral filters; Author-Supplied Keyword: Spectral sensitivity; Author-Supplied Keyword: Visual pigments; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 327215 Glass Product Manufacturing Made of Purchased Glass; Number of Pages: 11p; Document Type: Article L3 - 10.1007/s00359-016-1131-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120927128&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Larrimbe, Laura AU - Pettinà, Michele AU - Nikbin, Kamran AU - Jones, Eric L. AU - Katz, Allan P. AU - Hawkins, Christopher J. AU - DeCerbo, Jennifer AU - Brown, Peter AU - Vandeperre, Luc J. T1 - High Heat Flux Laser Testing of HfB2 Cylinders. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2017/01// VL - 100 IS - 1 M3 - Article SP - 293 EP - 303 SN - 00027820 AB - Hafnium diboride (HfB2) is one of a family of ultra-high temperature ceramics (UHTCs) which are being considered for application in environments with a substantial heat flux such as hypersonic flight. In order to characterize transitions in the material response with heat flux and therefore predict the in-service behavior of UHTCs, a range of tests were conducted in which small cylindrical bars of HfB2 were laser heated using heat fluxes from 25 to 100 MW/m2. After testing, the external damage as well as damage observable in cross sections through the cylinders was characterized using photography, optical, and scanning electron microscopy. Experimental results were compared with finite element modeling of the heat flow, temperature distribution, and phase transition. Heat flux rather than total deposited heat was found to be the strongest determinant of the way in which damage develops in samples; for lower heat fluxes, the main damage mechanism is oxidation, progressing to oxidation-induced melting and finally, at the highest heat fluxes, substantial ablation by melting irrespective of oxidation. The agreement between calculations and experimental observations indicates that such calculations can be used with confidence to guide the design of components. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT flux KW - BORIDES KW - HAFNIUM compounds KW - ULTRA-high-temperature ceramics KW - HYPERSONIC planes KW - LASER heating KW - hafnium diboride KW - laser testing KW - melting KW - oxidation KW - ultra-high temperature ceramics N1 - Accession Number: 120669462; Larrimbe, Laura 1 Pettinà, Michele 2 Nikbin, Kamran 2 Jones, Eric L. 3 Katz, Allan P. 3 Hawkins, Christopher J. 4 DeCerbo, Jennifer 4 Brown, Peter 4 Vandeperre, Luc J. 1; Affiliation: 1: Centre for Advanced Structural Ceramics & Department of Materials, Imperial College London 2: Centre for Advanced Structural Ceramics & Department of Mechanical Engineering, Imperial College London 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base 4: Defence Science and Technology Laboratory; Source Info: Jan2017, Vol. 100 Issue 1, p293; Subject Term: HEAT flux; Subject Term: BORIDES; Subject Term: HAFNIUM compounds; Subject Term: ULTRA-high-temperature ceramics; Subject Term: HYPERSONIC planes; Subject Term: LASER heating; Author-Supplied Keyword: hafnium diboride; Author-Supplied Keyword: laser testing; Author-Supplied Keyword: melting; Author-Supplied Keyword: oxidation; Author-Supplied Keyword: ultra-high temperature ceramics; Number of Pages: 9p; Document Type: Article L3 - 10.1111/jace.14474 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120669462&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CONF AU - Mahoney, Clare T1 - Conference Report on the MRS Meeting 2016. JO - Liquid Crystals Today JF - Liquid Crystals Today Y1 - 2017/01// VL - 26 IS - 1 M3 - Proceeding SP - 14 EP - 16 SN - 1358314X KW - LIQUID crystals KW - RESEARCH KW - NANOTECHNOLOGY KW - MATERIALS -- Research KW - ELECTROOPTICS KW - CONGRESSES N1 - Accession Number: 121290153; Mahoney, Clare 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, USA; Source Info: Jan2017, Vol. 26 Issue 1, p14; Subject Term: LIQUID crystals; Subject Term: RESEARCH; Subject Term: NANOTECHNOLOGY; Subject Term: MATERIALS -- Research; Subject Term: ELECTROOPTICS; Subject Term: CONGRESSES; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 3p; Illustrations: 3 Color Photographs; Document Type: Proceeding L3 - 10.1080/1358314X.2017.1279447 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121290153&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Poling, B.S. AU - Via, G.D. AU - Bole, K.D. AU - Johnson, E.E. AU - McDermott, J.M. T1 - Commercial-off-the-shelf algan/gan hemt device reliability study after exposure to heavy ion radiation. JO - Microelectronics Reliability JF - Microelectronics Reliability Y1 - 2017/01// VL - 68 M3 - Article SP - 13 EP - 20 SN - 00262714 AB - The reliability of commercial-off-the-shelf (COTS) GaN HEMTs was studied after irradiation using heavy ions of Neon (Ne), Silicon (Si), and Argon (Ar). Devices were exposed to heavy ions at a flux of ~ 1.8e 4 ions/cm 2 - sec to a fluence of 1.5e 5 ions/cm 2 and DC characterization measurements taken immediately after exposure exhibited no change. Additionally, no change in device performance was observed in DC or RF characterization taken prior to RF stress testing. Infrared (IR) and electroluminescence (EL) characterization was conducted before irradiation, post irradiation, and following stress testing to assess changes in emissions. After heavy ion exposure, irradiated devices and non-irradiated devices were subjected to an RF stress test at an elevated baseplate temperature. Results imply the irradiated devices degraded at a different rate than the non-irradiated device which suggests potential for confounding effects on long term reliability from heavy ion exposure. Future studies should be conducted using larger sample sizes and different radiation sources to determine if additional stress testing is required for GaN HEMT space qualification. [ABSTRACT FROM AUTHOR] AB - Copyright of Microelectronics Reliability is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MODULATION-doped field-effect transistors KW - IRRADIATION KW - HEAVY ions KW - GALLIUM nitride KW - SILICON KW - RELIABILITY (Engineering) KW - Gallium Nitride (GaN) KW - Heavy Ion KW - High Electron Mobility Transistors (HEMTs) KW - Reliability N1 - Accession Number: 120474949; Poling, B.S. 1; Email Address: brian.poling.2@us.af.mil Via, G.D. 1 Bole, K.D. 2 Johnson, E.E. 2 McDermott, J.M. 3; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson, AFB, OH, United States 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland, AFB, NM, United States 3: Wyle, Dayton, OH, United States; Source Info: Jan2017, Vol. 68, p13; Subject Term: MODULATION-doped field-effect transistors; Subject Term: IRRADIATION; Subject Term: HEAVY ions; Subject Term: GALLIUM nitride; Subject Term: SILICON; Subject Term: RELIABILITY (Engineering); Author-Supplied Keyword: Gallium Nitride (GaN); Author-Supplied Keyword: Heavy Ion; Author-Supplied Keyword: High Electron Mobility Transistors (HEMTs); Author-Supplied Keyword: Reliability; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.microrel.2016.09.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120474949&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 120386217 T1 - Acute partial sleep deprivation due to environmental noise increases weight gain by reducing energy expenditure in rodents. AU - Parrish, Jennifer B. AU - Teske, Jennifer A. Y1 - 2017/01// N1 - Accession Number: 120386217. Language: English. Entry Date: In Process. Revision Date: 20161231. Publication Type: journal article. Journal Subset: Biomedical; USA. NLM UID: 101264860. SP - 141 EP - 146 JO - Obesity (19307381) JF - Obesity (19307381) JA - OBESITY (19307381) VL - 25 IS - 1 CY - Malden, Massachusetts PB - Wiley-Blackwell AB - Objective: Chronic partial sleep deprivation (SD) by environmental noise exposure increases weight gain and feeding in rodents, which contrasts weight loss after acute SD by physical methods. This study tested whether acute environmental noise exposure reduced sleep and its effect on weight gain, food intake, physical activity, and energy expenditure (EE). It was hypothesized that acute exposure would (1) increase weight gain and feeding and (2) reduce sleep, physical activity, and EE (total and individual components); and (3) behavioral changes would persist throughout recovery from SD.Methods: Three-month old male Sprague-Dawley rats slept ad libitum, were noise exposed (12-h light cycle), and allowed to recover (36 h). Weight gain, food intake, sleep/wake, physical activity, and EE were measured.Results: Acute environmental noise exposure had no effect on feeding, increased weight gain (P < 0.01), and reduced sleep (P < 0.02), physical activity (P < 0.03), total EE (P < 0.05), and several components (P < 0.05). Reductions in EE and physical activity persisted during recovery.Conclusions: Reductions in EE during sleep, rest, and physical activity reduce total EE and contribute to weight gain during acute SD and recovery from SD. These data emphasize the importance of increasing physical activity after SD to prevent obesity. SN - 1930-7381 AD - United States Air Force Institute of Technology AD - Physiological Sciences Graduate Interdisciplinary Program, University of Arizona AD - Department of Nutritional Sciences, University of Arizona AD - Neuroscience Graduate Interdisciplinary Program, University of Arizona AD - Minneapolis VA Health Care System AD - Department of Food Science & Nutrition, University of Minnesota AD - Minnesota Obesity Center at the University of Minnesota U2 - PMID: 27896948. DO - 10.1002/oby.21703 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=120386217&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Acute partial sleep deprivation due to environmental noise increases weight gain by reducing energy expenditure in rodents. AU - Parrish, Jennifer B. AU - Teske, Jennifer A. JO - Obesity (19307381) JF - Obesity (19307381) Y1 - 2017/01// VL - 25 IS - 1 SP - 141 EP - 146 SN - 19307381 N1 - Accession Number: 120386217; Author: Parrish, Jennifer B.: 1,2 Author: Teske, Jennifer A.: 2,3,4,5,6,7 ; Author Affiliation: 1 United States Air Force Institute of Technology: 2 Physiological Sciences Graduate Interdisciplinary Program, University of Arizona: 3 Department of Nutritional Sciences, University of Arizona: 4 Neuroscience Graduate Interdisciplinary Program, University of Arizona: 5 Minneapolis VA Health Care System: 6 Department of Food Science & Nutrition, University of Minnesota: 7 Minnesota Obesity Center at the University of Minnesota; No. of Pages: 6; Language: English; Publication Type: journal article; Update Code: 20161228 N2 - Objective: Chronic partial sleep deprivation (SD) by environmental noise exposure increases weight gain and feeding in rodents, which contrasts weight loss after acute SD by physical methods. This study tested whether acute environmental noise exposure reduced sleep and its effect on weight gain, food intake, physical activity, and energy expenditure (EE). It was hypothesized that acute exposure would (1) increase weight gain and feeding and (2) reduce sleep, physical activity, and EE (total and individual components); and (3) behavioral changes would persist throughout recovery from SD.Methods: Three-month old male Sprague-Dawley rats slept ad libitum, were noise exposed (12-h light cycle), and allowed to recover (36 h). Weight gain, food intake, sleep/wake, physical activity, and EE were measured.Results: Acute environmental noise exposure had no effect on feeding, increased weight gain (P < 0.01), and reduced sleep (P < 0.02), physical activity (P < 0.03), total EE (P < 0.05), and several components (P < 0.05). Reductions in EE and physical activity persisted during recovery.Conclusions: Reductions in EE during sleep, rest, and physical activity reduce total EE and contribute to weight gain during acute SD and recovery from SD. These data emphasize the importance of increasing physical activity after SD to prevent obesity. ABSTRACT FROM AUTHOR KW - *SLEEP deprivation KW - *WEIGHT gain KW - *OBESITY KW - *CALORIC expenditure KW - *PHYSICAL activity KW - PHYSIOLOGICAL aspects KW - RISK factors KW - NOISE (Work environment) KW - ANIMAL models UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=120386217&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 120997352 T1 - Acquired Upper Extremity Growth Arrest. AU - GAUGER, ERICH M. AU - CASNOVSKY, LAUREN L. AU - GAUGER, ERICA J. AU - BOHN, DEBORAH C. AU - VAN HEEST, ANN E. Y1 - 2017/01//Jan/Feb2017 N1 - Accession Number: 120997352. Language: English. Entry Date: In Process. Revision Date: 20170130. Publication Type: Article. Journal Subset: Allied Health; Biomedical; Peer Reviewed; USA. NLM UID: 7806107. SP - e95 EP - e103 JO - Orthopedics JF - Orthopedics JA - ORTHOPEDICS VL - 40 IS - 1 CY - Thorofare, New Jersey PB - SLACK Incorporated SN - 0147-7447 AD - US Air Force Academy, 10th Medical Group, Colorado Springs, Colorado AD - Department of Orthopaedic Surgery, University of Minnesota, Minneapolis AD - TRIA Orthopaedic Center, Bloomington, Minnesota DO - 10.3928/01477447-20160926-07 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=120997352&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Strait, Joshua AU - Bolman, Tiffany T1 - Consideration of Personal Adverse Childhood Experiences during Implementation of Trauma-Informed Care Curriculum in Graduate Health Programs. JO - Permanente Journal JF - Permanente Journal Y1 - 2017///Winter2017 VL - 21 IS - 1 M3 - Article SP - 50 EP - 56 SN - 15525767 AB - Context: Scientific findings of adverse childhood experiences (ACEs) and their lifelong graded relationship with leading causes of death are well established. Many health care practitioners, however, have yet to implement ACEs screening in clinical practice. Furthermore, ACEs screening and trauma-informed care (TIC) are not part of standard graduate-level training. Objective: To 1) implement trauma-informed curriculum for multiple graduate health programs, 2) determine student understanding of and willingness to address ACEs, and 3) assess the relationship between students voluntarily evaluating their individual ACE Score and their attitude toward ACEs and TIC. Design: Prospective study with pre- and postcurricular surveys (12-question digital survey administered before and after the curriculum) for 967 graduate students from 9 health professions programs at 2 campuses who received curriculum focused on ACEs and TIC. Main Outcome Measures: Students' understanding of ACEs and TIC, their awareness of personal ACEs, and their willingness to incorporate TIC in practice. Results: Among students who voluntarily completed an ACE questionnaire, there was statistical significance in familiarity with clinical and scientific findings of the ACE Study (p < 0.001) and familiarity with TIC (p < 0.02). A significant intercampus difference in the students' familiarity with the scientific and clinical findings of the ACE Study (p < 0.05) was found. Conclusion: Students and future health care practitioners who voluntarily assess their ACE Score are significantly more likely to understand scientific and clinical findings of the ACE Study as well as TIC. [ABSTRACT FROM AUTHOR] AB - Copyright of Permanente Journal is the property of Permanente Journal and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WOUNDS & injuries -- Treatment KW - CHI-squared test KW - COMPARATIVE studies KW - CURRICULA (Courses of study) KW - EXPERIENCE KW - GRADUATE students KW - LONGITUDINAL method KW - SURVEYS KW - UNIVERSITIES & colleges -- Graduate work KW - WOUNDS & injuries KW - HUMAN services programs KW - DESCRIPTIVE statistics KW - CHILDREN N1 - Accession Number: 120614313; Strait, Joshua 1; Email Address: jstrait@westernu.edu Bolman, Tiffany 2; Email Address: tbolman@westernu.edu; Affiliation: 1: Fourth-Year Medical Student in the Department of Osteopathy at Western University of Health Sciences in Lebanon, OR, and a Commissioned Officer in the United States Air Force 2: Coordinator for Interprofessional Education at Western University of Health Sciences COMP-Northwest in Lebanon, OR; Source Info: Winter2017, Vol. 21 Issue 1, p50; Subject Term: WOUNDS & injuries -- Treatment; Subject Term: CHI-squared test; Subject Term: COMPARATIVE studies; Subject Term: CURRICULA (Courses of study); Subject Term: EXPERIENCE; Subject Term: GRADUATE students; Subject Term: LONGITUDINAL method; Subject Term: SURVEYS; Subject Term: UNIVERSITIES & colleges -- Graduate work; Subject Term: WOUNDS & injuries; Subject Term: HUMAN services programs; Subject Term: DESCRIPTIVE statistics; Subject Term: CHILDREN; NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; Number of Pages: 7p; Document Type: Article L3 - 10.7812/TPP/16-061 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120614313&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patton, Steven T. AU - Chenggang Chen AU - Jianjun Hu AU - Grazulis, Lawrence AU - Schrand, Amanda M. AU - Roy, Ajit K. T1 - Characterization of Thermoplastic Polyurethane (TPU) and Ag-Carbon Black TPU Nanocomposite for Potential Application in Additive Manufacturing. JO - Polymers (20734360) JF - Polymers (20734360) Y1 - 2017/01// VL - 9 IS - 1 M3 - Article SP - 1 EP - 17 SN - 20734360 AB - Electromechanical, adhesion, and viscoelastic properties of polymers and polymer nanocomposites (PNCs) are of interest for additive manufacturing (AM) and flexible electronics. Development/optimization of inks for AM is complex, expensive, and substrate/interface dependent. This study investigates properties of free standing films of a thermoplastic polyurethane (TPU) polymer and an Ag-carbon black (Ag-CB) TPU PNC in a lightly loaded low strain compression contact as a rough measure of their suitability for AM. The TPU exhibited high hysteresis and a large viscoelastic response, and sufficient dwell time was needed for polymer chain relaxation and measurable adhesion. A new discovery is that large enough contact area is needed to allow longer time constant polymer ordering in the contact that led to higher adhesion and better performance/reliability. This has previously unknown implications for interface size relative to polymer chain length in AM design. The standard linear model was found to be a good fit for the viscoelastic behavior of the TPU. The PNC exhibited no adhesion (new result), low electrical resistance, and relatively small viscoelastic response. This implies potential for AM electrical trace as well as switch applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Polymers (20734360) is the property of MDPI Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERIC nanocomposites manufacturing KW - THERMOPLASTIC composites KW - POLYURETHANES KW - CARBON-black KW - SILVER nanoparticles KW - THREE-dimensional printing KW - VISCOELASTICITY KW - ELECTRIC resistance KW - additive manufacturing KW - adhesion KW - chain relaxation/ordering KW - compression KW - electromechanical response KW - nanocomposite KW - thermoplastic polyurethane KW - viscoelasticity N1 - Accession Number: 120988046; Patton, Steven T. 1; Email Address: steven.patton.2.ctr@us.af.mil Chenggang Chen 1; Email Address: chenggang.chen.ctr@us.af.mil Jianjun Hu 1; Email Address: jianjun.hu.1.ctr@us.af.mil Grazulis, Lawrence 1; Email Address: general_info@udri.udayton.edu Schrand, Amanda M. 2; Email Address: amanda.schrand.2@us.af.mil Roy, Ajit K. 3; Email Address: ajit.roy@us.af.mil; Affiliation: 1: Nonstructural Materials Division, University of Dayton Research Institute, Dayton, OH 45469-0050, USA 2: Munitions Directorate, Air Force Research Laboratory, Eglin Air Force Base, Valparaiso, FL 45433-7750, USA 3: Materials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433-7750, USA; Source Info: Jan2017, Vol. 9 Issue 1, p1; Subject Term: POLYMERIC nanocomposites manufacturing; Subject Term: THERMOPLASTIC composites; Subject Term: POLYURETHANES; Subject Term: CARBON-black; Subject Term: SILVER nanoparticles; Subject Term: THREE-dimensional printing; Subject Term: VISCOELASTICITY; Subject Term: ELECTRIC resistance; Author-Supplied Keyword: additive manufacturing; Author-Supplied Keyword: adhesion; Author-Supplied Keyword: chain relaxation/ordering; Author-Supplied Keyword: compression; Author-Supplied Keyword: electromechanical response; Author-Supplied Keyword: nanocomposite; Author-Supplied Keyword: thermoplastic polyurethane; Author-Supplied Keyword: viscoelasticity; Number of Pages: 17p; Illustrations: 4 Diagrams, 9 Graphs; Document Type: Article L3 - 10.3390/polym9010006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120988046&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thomas, Brandon J. AU - Harruff-Miller, Barbara A. AU - Lewis, William K. T1 - Note: A simple detection method for helium droplet spectroscopy experiments. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2017/01// VL - 88 IS - 1 M3 - Article SP - 1 EP - 3 SN - 00346748 AB - Helium droplet methods are currently established as a premier experimental technique for the production and spectroscopic study of novel clusters and complexes. Unfortunately, some of the essential equipment required to perform the experiments, such as the detector used to monitor photon-induced depletion of the helium droplet beam, can be relatively large, complex, and expensive. Most often this detector is a quadrupole mass spectrometer (QMS). In this report, we describe the development and evaluation of an extremely simple, straightforward, small, and inexpensive droplet beam detector for use in helium droplet spectroscopy experiments and compare its performance to that of a QMS by recording the infrared spectra of helium droplets doped with either 13CO2 or CD4. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HELIUM KW - PHOTONS KW - QUADRUPOLE mass analyzers KW - QUANTUM cascade lasers KW - HAMILTONIAN systems N1 - Accession Number: 120929305; Thomas, Brandon J. 1 Harruff-Miller, Barbara A. 2 Lewis, William K. 3; Email Address: William.Lewis.49@us.af.mil; Affiliation: 1: U.S. Food and Drug Administration, Division of Pharmaceutical Analysis, St. Louis, Missouri 63110, USA 2: Energy Technology and Materials Division, University of Dayton Research Institute, Dayton, Ohio 45469, USA 3: U.S. Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, Ohio 45433, USA; Source Info: Jan2017, Vol. 88 Issue 1, p1; Subject Term: HELIUM; Subject Term: PHOTONS; Subject Term: QUADRUPOLE mass analyzers; Subject Term: QUANTUM cascade lasers; Subject Term: HAMILTONIAN systems; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.4973775 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120929305&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bakhtiarinejad, Mahsan AU - Lee, Soobum AU - Joo, James T1 - Component allocation and supporting frame topology optimization using global search algorithm and morphing mesh. JO - Structural & Multidisciplinary Optimization JF - Structural & Multidisciplinary Optimization Y1 - 2017/01// VL - 55 IS - 1 M3 - Article SP - 297 EP - 315 SN - 1615147X AB - This paper proposes a stepwise structural design methodology where the component layout and the supporting frame structure is sequentially found using global search algorithm and topology optimization. In the component layout design step, the genetic algorithm is used to handle system level multiobjective problem where the optimal locations of multiple components are searched. Based on the layout design searched, a new Topology Optimization method based on Morphing Mesh technique (TOMM) is applied to obtain the frame structure topology while adjusting the component locations simultaneously. TOMM is based on the SIMP method with morphable FE mesh, and component relocation and frame design is simultaneously done using two kinds of design variables: topology design variables and morphing design variables. Two examples are studied in this paper. First, TOMM method is applied to a simple cantilever beam problem to validate the proposed design methodology and justify inclusion of morphing design variables. Then the stepwise design methodology is applied to the commercial Boeing 757 aircraft wing design problem for the optimal placement of multiple components (subsystems) and the optimal supporting frame structure around them. Additional constraint on the weight balance is included and the corresponding design sensitivity is formulated. The benefit of using the global search algorithm (genetic algorithm) is discussed in terms of finding the global optimum and independency of initial design guess. It has been proved that the proposed stepwise method can provide innovative design insight for complex modern engineering systems with multi-component structures. [ABSTRACT FROM AUTHOR] AB - Copyright of Structural & Multidisciplinary Optimization is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WING-warping (Aerodynamics) KW - STRUCTURAL optimization KW - SEARCH algorithms KW - TOPOLOGY KW - SENSITIVITY analysis KW - Aircraft wing KW - Component relocation KW - FE morphing KW - SIMP KW - Topology optimization N1 - Accession Number: 120630236; Bakhtiarinejad, Mahsan 1 Lee, Soobum 2; Email Address: sblee@umbc.edu Joo, James 3; Affiliation: 1: Department of Mechanical Engineering , University of Maryland Baltimore County , 1000 Hilltop Circle Baltimore 21250 USA 2: Department of Mechanical Engineering , University of Maryland Baltimore County , 1000 Hilltop Circle, ENG214 Baltimore 21250 USA 3: Design & Analysis Branch, Aerospace Vehicles Division , Air Force Research Laboratory , 2130 8th St. WPAFB 45433 USA; Source Info: Jan2017, Vol. 55 Issue 1, p297; Subject Term: WING-warping (Aerodynamics); Subject Term: STRUCTURAL optimization; Subject Term: SEARCH algorithms; Subject Term: TOPOLOGY; Subject Term: SENSITIVITY analysis; Author-Supplied Keyword: Aircraft wing; Author-Supplied Keyword: Component relocation; Author-Supplied Keyword: FE morphing; Author-Supplied Keyword: SIMP; Author-Supplied Keyword: Topology optimization; Number of Pages: 19p; Document Type: Article L3 - 10.1007/s00158-016-1468-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120630236&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Veksler, Bella Z. AU - Boyd, Rachel AU - Myers, Christopher W. AU - Gunzelmann, Glenn AU - Neth, Hansjörg AU - Gray, Wayne D. T1 - Visual Working Memory Resources Are Best Characterized as Dynamic, Quantifiable Mnemonic Traces. JO - Topics in Cognitive Science JF - Topics in Cognitive Science Y1 - 2017/01// VL - 9 IS - 1 M3 - Article SP - 83 EP - 101 SN - 17568757 AB - Visual working memory (VWM) is a construct hypothesized to store a small amount of accurate perceptual information that can be brought to bear on a task. Much research concerns the construct's capacity and the precision of the information stored. Two prominent theories of VWM representation have emerged: slot-based and continuous-resource mechanisms. Prior modeling work suggests that a continuous resource that varies over trials with variable capacity and a potential to make localization errors best accounts for the empirical data. Questions remain regarding the variability in VWM capacity and precision. Using a novel eye-tracking paradigm, we demonstrate that VWM facilitates search and exhibits effects of fixation frequency and recency, particularly for prior targets. Whereas slot-based memory models cannot account for the human data, a novel continuous-resource model does capture the behavioral and eye tracking data, and identifies the relevant resource as item activation. [ABSTRACT FROM AUTHOR] AB - Copyright of Topics in Cognitive Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VISUAL memory KW - ERRORS KW - COGNITIVE science KW - COGNITIVE psychology KW - PHILOSOPHY of mind KW - ACT-R KW - Eye tracking KW - Resource allocation KW - Visual search KW - Visual working memory N1 - Accession Number: 121000342; Veksler, Bella Z. 1 Boyd, Rachel 1 Myers, Christopher W. 2 Gunzelmann, Glenn 2 Neth, Hansjörg 3 Gray, Wayne D. 4; Affiliation: 1: Oak Ridge Institute for Science & Education at AFRL 2: U.S. Air Force Research Laboratory 3: Department of Psychology University of Konstanz 4: Cognitive Science Department Rensselaer Polytechnic Institute; Source Info: Jan2017, Vol. 9 Issue 1, p83; Subject Term: VISUAL memory; Subject Term: ERRORS; Subject Term: COGNITIVE science; Subject Term: COGNITIVE psychology; Subject Term: PHILOSOPHY of mind; Author-Supplied Keyword: ACT-R; Author-Supplied Keyword: Eye tracking; Author-Supplied Keyword: Resource allocation; Author-Supplied Keyword: Visual search; Author-Supplied Keyword: Visual working memory; Number of Pages: 19p; Document Type: Article L3 - 10.1111/tops.12248 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121000342&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Toet, Alexander AU - Hogervorst, Maarten A. AU - Pinkus, Alan R. T1 - The TRICLOBS Dynamic Multi-Band Image Data Set for the Development and Evaluation of Image Fusion Methods. JO - PLoS ONE JF - PLoS ONE Y1 - 2016/12/30/ VL - 11 IS - 12 M3 - Article SP - 1 EP - 23 PB - Public Library of Science SN - 19326203 AB - The fusion and enhancement of multiband nighttime imagery for surveillance and navigation has been the subject of extensive research for over two decades. Despite the ongoing efforts in this area there is still only a small number of static multiband test images available for the development and evaluation of new image fusion and enhancement methods. Moreover, dynamic multiband imagery is also currently lacking. To fill this gap we present the TRICLOBS dynamic multi-band image data set containing sixteen registered visual (0.4–0.7μm), near-infrared (NIR, 0.7–1.0μm) and long-wave infrared (LWIR, 8–14μm) motion sequences. They represent different military and civilian surveillance scenarios registered in three different scenes. Scenes include (military and civilian) people that are stationary, walking or running, or carrying various objects. Vehicles, foliage, and buildings or other man-made structures are also included in the scenes. This data set is primarily intended for the development and evaluation of image fusion, enhancement and color mapping algorithms for short-range surveillance applications. The imagery was collected during several field trials with our newly developed TRICLOBS (TRI-band Color Low-light OBServation) all-day all-weather surveillance system. This system registers a scene in the Visual, NIR and LWIR part of the electromagnetic spectrum using three optically aligned sensors (two digital image intensifiers and an uncooled long-wave infrared microbolometer). The three sensor signals are mapped to three individual RGB color channels, digitized, and stored as uncompressed RGB (false) color frames. The TRICLOBS data set enables the development and evaluation of (both static and dynamic) image fusion, enhancement and color mapping algorithms. To allow the development of realistic color remapping procedures, the data set also contains color photographs of each of the three scenes. The color statistics derived from these photographs can be used to define color mappings that give the multi-band imagery a realistic color appearance. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMAGE fusion KW - IMAGE color analysis KW - MAPPINGS (Mathematics) KW - IMAGE databases KW - ALGORITHMS KW - Amorphous solids KW - Bioinformatics KW - Biological databases KW - Cameras KW - Database and informatics methods KW - Digital imaging KW - Engineering and technology KW - Equipment KW - Glass KW - Grayscale KW - Imaging techniques KW - Infrared spectroscopy KW - Materials by structure KW - Materials science KW - Near-infrared spectroscopy KW - Optical equipment KW - Physical sciences KW - Research and analysis methods KW - Research Article KW - Sequence analysis KW - Sequence databases KW - Signal processing KW - Spectrum analysis techniques N1 - Accession Number: 120488944; Toet, Alexander 1; Email Address: lextoet@gmail.com Hogervorst, Maarten A. 1 Pinkus, Alan R. 2; Affiliation: 1: TNO, Soesterberg, The Netherlands 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio, United States of America; Source Info: 12/30/2016, Vol. 11 Issue 12, p1; Subject Term: IMAGE fusion; Subject Term: IMAGE color analysis; Subject Term: MAPPINGS (Mathematics); Subject Term: IMAGE databases; Subject Term: ALGORITHMS; Author-Supplied Keyword: Amorphous solids; Author-Supplied Keyword: Bioinformatics; Author-Supplied Keyword: Biological databases; Author-Supplied Keyword: Cameras; Author-Supplied Keyword: Database and informatics methods; Author-Supplied Keyword: Digital imaging; Author-Supplied Keyword: Engineering and technology; Author-Supplied Keyword: Equipment; Author-Supplied Keyword: Glass; Author-Supplied Keyword: Grayscale; Author-Supplied Keyword: Imaging techniques; Author-Supplied Keyword: Infrared spectroscopy; Author-Supplied Keyword: Materials by structure; Author-Supplied Keyword: Materials science; Author-Supplied Keyword: Near-infrared spectroscopy; Author-Supplied Keyword: Optical equipment; Author-Supplied Keyword: Physical sciences; Author-Supplied Keyword: Research and analysis methods; Author-Supplied Keyword: Research Article; Author-Supplied Keyword: Sequence analysis; Author-Supplied Keyword: Sequence databases; Author-Supplied Keyword: Signal processing; Author-Supplied Keyword: Spectrum analysis techniques; Number of Pages: 23p; Document Type: Article L3 - 10.1371/journal.pone.0165016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120488944&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Holmes, Ben AU - Jung, Seung Ho AU - Lu, Jing AU - Wagner, Jessica A. AU - Rubbi, Liudmilla AU - Pellegrini, Matteo AU - Jankord, Ryan T1 - Transcriptomic Modification in the Cerebral Cortex following Noninvasive Brain Stimulation: RNA-Sequencing Approach. JO - Neural Plasticity JF - Neural Plasticity Y1 - 2016/12/29/ M3 - Article SP - 1 EP - 15 SN - 20905904 AB - Transcranial direct current stimulation (tDCS) has been shown to modulate neuroplasticity. Beneficial effects are observed in patients with psychiatric disorders and enhancement of brain performance in healthy individuals has been observed following tDCS. However, few studies have attempted to elucidate the underlying molecular mechanisms of tDCS in the brain. This study was conducted to assess the impact of tDCS on gene expression within the rat cerebral cortex. Anodal tDCS was applied at 3 different intensities followed by RNA-sequencing and analysis. In each current intensity, approximately 1,000 genes demonstrated statistically significant differences compared to the sham group. A variety of functional pathways, biological processes, and molecular categories were found to be modified by tDCS. The impact of tDCS on gene expression was dependent on current intensity. Results show that inflammatory pathways, antidepressant-related pathways (GTP signaling, calcium ion binding, and transmembrane/signal peptide pathways), and receptor signaling pathways (serotonergic, adrenergic, GABAergic, dopaminergic, and glutamate) were most affected. Of the gene expression profiles induced by tDCS, some changes were observed across multiple current intensities while other changes were unique to a single stimulation intensity. This study demonstrates that tDCS can modify the expression profile of various genes in the cerebral cortex and that these tDCS-induced alterations are dependent on the current intensity applied. [ABSTRACT FROM AUTHOR] AB - Copyright of Neural Plasticity is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CEREBRAL cortex -- Physiology KW - BRAIN stimulation KW - RNA-seq KW - NEUROPLASTICITY KW - GENE expression N1 - Accession Number: 120459177; Holmes, Ben 1 Jung, Seung Ho 1 Lu, Jing 2 Wagner, Jessica A. 1 Rubbi, Liudmilla 2 Pellegrini, Matteo 2 Jankord, Ryan 1; Affiliation: 1: Applied Neuroscience, Warfighter Interface Division, 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH 45433, USA 2: Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, CA 90095, USA; Source Info: 12/29/2016, p1; Subject Term: CEREBRAL cortex -- Physiology; Subject Term: BRAIN stimulation; Subject Term: RNA-seq; Subject Term: NEUROPLASTICITY; Subject Term: GENE expression; Number of Pages: 15p; Document Type: Article L3 - 10.1155/2016/5942980 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120459177&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Squires, Matthew B. AU - Olson, Spencer E. AU - Kasch, Brian AU - Stickney, James A. AU - Erickson, Christopher J. AU - Crow, Jonathan A. R. AU - Carlson, Evan J. AU - Burke, John H. T1 - Ex vacuo atom chip Bose-Einstein condensate. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2016/12/26/ VL - 109 IS - 26 M3 - Article SP - 264101-1 EP - 264101-4 SN - 00036951 AB - Ex vacuo atom chips, used in conjunction with a custom thin walled vacuum chamber, have enabled the rapid replacement of atom chips for magnetically trapped cold atom experiments. Atoms were trapped in >2 kHz magnetic traps created using high power atom chips. A thin walled vacuum chamber allowed the atoms to be trapped ≲1mm from the atom chip conductors which were located outside of the vacuum system. Placing the atom chip outside of the vacuum simplified the electrical connections and improved the thermal management. Using a multi-lead Z-wire chip design, a Bose-Einstein condensate was produced with an external atom chip. Vacuum and optical conditions were maintained while replacing the Z-wire chip with an atom chip with a cross-wire design. The atom chips were exchanged and an initial magnetic trap was achieved in less than 3 h. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BOSE-Einstein condensation KW - ATOMIC theory KW - MAGNETIC traps KW - VACUUM chambers KW - INTEGRATED circuits N1 - Accession Number: 120535234; Squires, Matthew B. 1 Olson, Spencer E. 1 Kasch, Brian 1,2 Stickney, James A. 3 Erickson, Christopher J. 1 Crow, Jonathan A. R. 1 Carlson, Evan J. 1 Burke, John H. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA 2: Space Dynamics Laboratory, Kirtland Air Force Base, New Mexico 87117, USA 3: Space Dynamics Laboratory, North Logan, Utah 84341, USA; Source Info: 2016, Vol. 109 Issue 26, p264101-1; Subject Term: BOSE-Einstein condensation; Subject Term: ATOMIC theory; Subject Term: MAGNETIC traps; Subject Term: VACUUM chambers; Subject Term: INTEGRATED circuits; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 4p; Illustrations: 2 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.4971838 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120535234&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Whitlow, Travis AU - Jones, Eric AU - Przybyla, Craig T1 - In-situ damage monitoring of a SiC/SiC ceramic matrix composite using acoustic emission and digital image correlation. JO - Composite Structures JF - Composite Structures Y1 - 2016/12/15/ VL - 158 M3 - Article SP - 245 EP - 251 SN - 02638223 AB - Continuous ceramic fiber reinforced ceramic matrix composites (CMCs) offer an innovative damage tolerant structural material for temperature regimes inaccessible to high temperature metals. However, when subjected to application environments, these materials exhibit damage and degrade over time depending on the severity of those conditions. The ultimate strength of CMCs is dictated by the properties of the load bearing fibers, but matrix cracking weakens the composite and can expose the load bearing fibers to harsh environments. The objective of the work performed was to develop a methodology for linking in situ detection of localized damage to final failure in continuous fiber reinforced CMCs. Initiation and growth of matrix cracking are measured and located linearly along the gage length via acoustic emission (AE) detection. High amplitude events at relatively low static loads can be associated with initiation of large matrix cracks. When there is a localization of high amplitude events in a given area, a measurable effect on the strain field can be observed. Full field surface strain measurements were obtained using digital image correlation (DIC). An estimation of the matrix cracking stress as well as localized areas of initiation were measured in real time. [ABSTRACT FROM AUTHOR] AB - Copyright of Composite Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON carbide KW - CERAMIC materials KW - COMPOSITE materials KW - ACOUSTIC emission KW - DIGITAL images KW - STRUCTURAL stability N1 - Accession Number: 118813919; Whitlow, Travis 1; Email Address: travis.whitlow@udri.udayton.edu Jones, Eric 2 Przybyla, Craig 2; Affiliation: 1: University of Dayton Research Institute, Dayton, OH, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Dec2016, Vol. 158, p245; Subject Term: SILICON carbide; Subject Term: CERAMIC materials; Subject Term: COMPOSITE materials; Subject Term: ACOUSTIC emission; Subject Term: DIGITAL images; Subject Term: STRUCTURAL stability; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.compstruct.2016.09.040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118813919&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, Robert Scott AU - Cambier, Jean-Luc T1 - Octree particle management for DSMC and PIC simulations. JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2016/12/15/ VL - 327 M3 - Article SP - 943 EP - 966 SN - 00219991 AB - The ratio of physical to computationally modeled particles is of critical importance to the fidelity of particle-based simulation methods such as Direct Simulation Monte Carlo (DSMC) and Particle-in-Cell (PIC). Like adaptive mesh refinement for continuum/grid-based simulations, particle remapping enables dynamic control of simulation fidelity in regions of interest so that computational resources can be efficiently distributed within the problem. This is particularly important for simulations involving high dynamic range in the density for one or more species such as problems involving chain-branching reactions like combustion and ionizing breakdown. In this work, a new method of particle remapping is presented which strictly conserves mass, momentum, and energy while simultaneously remaining faithful to the original velocity distribution function through the use of octree binning in velocity space. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTATIONAL physics KW - CONTINUUM (Mathematics) KW - DISTRIBUTION (Probability theory) KW - OCTREES (Computer graphics) KW - PARTICLE methods (Numerical analysis) KW - PLASMA simulation KW - Dynamic weight KW - Octree KW - Particle method KW - Phase-space remapping KW - PIC KW - Plasma simulation N1 - Accession Number: 119076680; Martin, Robert Scott 1; Email Address: robert.martin.81.ctr@us.af.mil Cambier, Jean-Luc 2; Affiliation: 1: ERC Inc., USA 2: In-Space Propulsion Branch, Air Force Research Laboratory, Edwards AFB, CA 93524, USA; Source Info: Dec2016, Vol. 327, p943; Subject Term: COMPUTATIONAL physics; Subject Term: CONTINUUM (Mathematics); Subject Term: DISTRIBUTION (Probability theory); Subject Term: OCTREES (Computer graphics); Subject Term: PARTICLE methods (Numerical analysis); Subject Term: PLASMA simulation; Author-Supplied Keyword: Dynamic weight; Author-Supplied Keyword: Octree; Author-Supplied Keyword: Particle method; Author-Supplied Keyword: Phase-space remapping; Author-Supplied Keyword: PIC; Author-Supplied Keyword: Plasma simulation; Number of Pages: 24p; Document Type: Article L3 - 10.1016/j.jcp.2016.01.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119076680&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rumi, Mariacristina AU - White, Timothy J. AU - Bunning, Timothy J. T1 - Phototropic Guest-Host Liquid Crystal Systems: Environmental Effects on Naphthopyran Kinetics. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2016/12/15/ VL - 120 IS - 49 M3 - Article SP - 12755 EP - 12767 SN - 15206106 AB - Photoinduced isothermal and order-increasing phase transitions can be observed in guest-host liquid crystal mixtures containing naphthopyran derivatives. The changes are attributed to the different geometry and a less energetically favorable interaction with the liquid crystal molecules for the ground state naphthopyran species with respect to the photoproduct. In this study, we have investigated the thermal relaxation of the naphthopyran photoproduct back to the initial species as a function of temperature and excitation conditions. It was found that the thermal relaxation is typically first-order and its characteristic rate has a temperature dependence that is different in the anisotropic and isotropic states of the mesogenic solvents. In particular, the activation energy for thermal relaxation is larger in the ordered phases of mesogenic solvents relative to their isotropic phase. The findings suggests that the naphthopyran relaxation is hindered by the organization of the host environment. These results will be useful to build a more complete understanding of the mutual guest-host interactions in naphthopyran-containing guest-host LC systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHASE transformations (Physics) KW - ISOTHERMAL processes KW - PYRAN -- Derivatives KW - LIQUID crystals KW - PHOTOTROPISM (Chemistry) KW - CHEMICAL kinetics N1 - Accession Number: 120258579; Rumi, Mariacristina 1,2 White, Timothy J. 1; Email Address: timothy.white.24@us.af.mil Bunning, Timothy J. 1; Email Address: timothy.bunning@us.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, United States 2: Azimuth Corporation, 4027 Colonel Glenn Highway, Suite 230, Beavercreek, Ohio 45431, United States; Source Info: Dec2016, Vol. 120 Issue 49, p12755; Subject Term: PHASE transformations (Physics); Subject Term: ISOTHERMAL processes; Subject Term: PYRAN -- Derivatives; Subject Term: LIQUID crystals; Subject Term: PHOTOTROPISM (Chemistry); Subject Term: CHEMICAL kinetics; Number of Pages: 13p; Document Type: Article L3 - 10.1021/acs.jpcb.6b10053 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120258579&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pustovit, Vitaliy N. AU - Urbas, Augustine M. AU - Zelmon, David E. T1 - Surface plasmon amplification by stimulated emission of radiation in hyperbolic metamaterials. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2016/12/15/ VL - 94 IS - 23 M3 - Article SP - 1 EP - 1 SN - 10980121 AB - We study theoretically and numerically spasing conditions and optical dynamics of a composite hyperbolic metamaterial interacting with gain molecules. By combining Maxwell-Bloch equations with Green's function approach, we calculate lasing frequency and threshold population inversion for various gain density in the gain layer. We demonstrate a high level of enhancement for photonic density of states in a spacious spectral range provided by hyperbolic metastructures. We find that direct dipole-dipole interactions between molecules in the gain layer has a negligible effect on spasing conditions. We identify a region of parameters in which spasing can occur considering these effects. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAMATERIALS -- Optical properties KW - SURFACE plasmon resonance KW - DENSITY of states KW - PUSTOVIT, Vitaliy N. KW - URBAS, Augustine M. KW - ZELMON, David E. KW - PHYSICAL Review (Periodical) N1 - Accession Number: 120712411; Pustovit, Vitaliy N. 1 Urbas, Augustine M. 1 Zelmon, David E. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, USA; Source Info: Dec2016, Vol. 94 Issue 23, p1; Subject Term: METAMATERIALS -- Optical properties; Subject Term: SURFACE plasmon resonance; Subject Term: DENSITY of states; Reviews & Products: PHYSICAL Review (Periodical); People: PUSTOVIT, Vitaliy N.; People: URBAS, Augustine M.; People: ZELMON, David E.; Number of Pages: 1p; Document Type: Article L3 - 10.1103/PhysRevB.94.235445 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120712411&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buszek, Robert J. AU - Ridge, Claron J. AU - Emery, Samuel B. AU - Lindsay, C. Michael AU - Boatz, Jerry A. T1 - Theoretical Study of Cu/Mg Core-shell Nanocluster Formation. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2016/12/08/ VL - 120 IS - 48 M3 - Article SP - 9612 EP - 9617 SN - 10895639 AB - In a recently reported helium droplet-mediated deposition experiment to produce copper-coated magnesium core-shell nanoclusters, structural inversion was observed, which resulted in copper in the nanocluster interior, surrounded by oxidized magnesium on the copper surface. This study utilizes density functional theory methods to model the migration of copper atoms into the interior of a magnesium nanocluster to probe the energetics of this process and to compare it to the complementary process of magnesium atom migration into the interior of a copper nanocluster. Potential energy surfaces describing the forced migration of copper (magnesium) atoms into the interior of a 30-atom magnesium (copper) cluster were generated using the B3PW91 hybrid generalized gradient approximation functional with the augmented correlation consistent core-valence polarized triple-ζ basis set for magnesium and a pseudopotential plus valence-only basis set for copper. The estimated barrier for atomic copper to penetrate the surface of Mg30 is 0.6 kcal mol-1. In contrast, the migration of atomic magnesium into the interior of Cu30 crosses an estimated barrier of 6 kcal mol-1. These results are qualitatively consistent with the observed structural inversion of copper-coated magnesium nanoclusters and also suggest that inversion of a magnesium-coated copper cluster is less likely to occur. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNESIUM KW - MICROCLUSTERS KW - NANOSTRUCTURED materials KW - COPPER KW - POTENTIAL energy surfaces KW - PSEUDOPOTENTIAL method N1 - Accession Number: 120092001; Buszek, Robert J. 1 Ridge, Claron J. 2 Emery, Samuel B. 3 Lindsay, C. Michael 2 Boatz, Jerry A. 4; Email Address: jerry.boatz@us.af.mil; Affiliation: 1: ERC, Inc., Edwards Air Force Base, California 93524, United States 2: Air Force Research Laboratory, Munitions Directorate, 2306 Perimeter Road, Eglin Air Force Base, Florida 32542, United States 3: Naval Surface Warfare Center Indian Head EOD Technology Division, 3196 Deep Point Court, Indian Head, Maryland 20640, United States 4: Air Force Research Laboratory, Aerospace Systems Directorate, 10 E. Saturn Boulevard, Edwards Air Force Base, California 93524, United States; Source Info: Dec2016, Vol. 120 Issue 48, p9612; Subject Term: MAGNESIUM; Subject Term: MICROCLUSTERS; Subject Term: NANOSTRUCTURED materials; Subject Term: COPPER; Subject Term: POTENTIAL energy surfaces; Subject Term: PSEUDOPOTENTIAL method; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; Number of Pages: 6p; Document Type: Article L3 - 10.1021/acs.jpca.6b09772 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120092001&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Castelluccio, Gustavo M. AU - Musinski, William D. AU - McDowell, David L. T1 - Computational micromechanics of fatigue of microstructures in the HCF–VHCF regimes. JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2016/12/02/Dec2016 Part 2 VL - 93 M3 - Article SP - 387 EP - 396 SN - 01421123 AB - Advances in higher resolution experimental techniques have shown that metallic materials can develop fatigue cracks under cyclic loading levels significantly below the yield stress. Indeed, the traditional notion of a fatigue limit can be recast in terms of limits associated with nucleation and arrest of fatigue cracks at the microstructural scale. Although fatigue damage characteristically emerges from irreversible dislocation processes at sub-grain scales, the specific microstructure attributes, environment, and loading conditions can strongly affect the apparent failure mode and surface to subsurface transitions. In this paper we discuss multiple mechanisms that occur during fatigue loading in the high cycle fatigue (HCF) to very high cycle fatigue (VHCF) regimes. We compare these regimes, focusing on strategies to bridge experimental and modeling approaches exercised at multiple length scales and discussing particular challenges to modeling and simulation regarding microstructure-sensitive fatigue driving forces and thresholds. We conclude by discussing some of the challenges in predicting the transition of failure mechanisms at different stress and strain amplitudes. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH cycle fatigue (Materials science) KW - FATIGUE cracks KW - MICROMECHANICS KW - CYCLIC loading KW - NUCLEATION KW - MICROSTRUCTURE KW - Failure mechanisms KW - Mesoscale modeling KW - Microstructure effects KW - Very high cycle fatigue N1 - Accession Number: 118499207; Castelluccio, Gustavo M. 1 Musinski, William D. 2 McDowell, David L. 3; Email Address: david.mcdowell@me.gatech.edu; Affiliation: 1: Sandia National Laboratories, Albuquerque, NM, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 3: Georgia Institute of Technology, Atlanta, GA, USA; Source Info: Dec2016 Part 2, Vol. 93, p387; Subject Term: HIGH cycle fatigue (Materials science); Subject Term: FATIGUE cracks; Subject Term: MICROMECHANICS; Subject Term: CYCLIC loading; Subject Term: NUCLEATION; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: Failure mechanisms; Author-Supplied Keyword: Mesoscale modeling; Author-Supplied Keyword: Microstructure effects; Author-Supplied Keyword: Very high cycle fatigue; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijfatigue.2016.05.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118499207&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gresham, Kimberlee C. AU - Palma, Christopher AU - Polsgrove, Daniel E. AU - Chun, Francis K. AU - Della-Rose, Devin J. AU - Tippets, Roger D. T1 - Education and outreach using the falcon telescope network. JO - Acta Astronautica JF - Acta Astronautica Y1 - 2016/12// VL - 129 M3 - Article SP - 130 EP - 134 SN - 00945765 AB - The Falcon Telescope Network (FTN) is a global network of small aperture telescopes developed by the Center for Space Situational Awareness Research in the Department of Physics at the United States Air Force Academy (USAFA). Consisting of commercially available equipment, the FTN is a collaborative effort between USAFA and other educational institutions ranging from two- and four-year colleges to major research universities. USAFA provides the equipment (e.g. telescope, mount, camera, filter wheel, dome, weather station, computers and storage devices) while the educational partners provide the building and infrastructure to support an observatory. The user base includes USAFA along with K-12 and higher education faculty and students. The diversity of the users implies a wide variety of observing interests, and thus the FTN collects images on diverse objects, including satellites, galactic and extragalactic objects, and objects popular for education and public outreach. The raw imagery, all in the public domain, will be accessible to FTN partners and will be archived at USAFA. Currently, there are five Falcon telescopes installed, two in Colorado and one each in Pennsylvania, Chile, and Australia. These five telescopes are in various stages of operational capability but all are remotely operable via a remote desktop application. The FTN team has conducted STEM First Light Projects for three of the U.S. observatories, soliciting proposals from middle and high school students and teachers that suggest and then become what is observed as official STEM first-light objects. Students and teachers learn how to write and submit a proposal as well as how telescopes operate and take data, while university-level students at the U.S. Air Force Academy and The Pennsylvania State University learn how to evaluate proposals and provide feedback to the middle and high school students and teachers. In this paper, we present the current status of the FTN, details of and lessons learned from the STEM First Light Project, and feedback from middle and high school students and teachers. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Astronautica is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VERY large array telescopes KW - ASTRONOMICAL observatories KW - HIGH school students KW - MIDDLE school students KW - HIGH school teachers N1 - Accession Number: 119511122; Gresham, Kimberlee C. 1; Email Address: kgresham@usra.edu Palma, Christopher 2; Email Address: cxp137@psu.edu Polsgrove, Daniel E. 3; Email Address: Daniel.Polsgrove@usafa.edu Chun, Francis K. 3; Email Address: Francis.Chun@usafa.edu Della-Rose, Devin J. 3; Email Address: Devin.Della-Rose@usafa.edu Tippets, Roger D. 3; Email Address: roger.tippets.ctr@usafa.edu; Affiliation: 1: Universities Space Research Association, United States Air Force Academy, Colorado, USA 2: Department of Astronomy and Astrophysics, The Pennsylvania State University, USA 3: Department of Physics, United States Air Force Academy, Colorado, USA; Source Info: Dec2016, Vol. 129, p130; Subject Term: VERY large array telescopes; Subject Term: ASTRONOMICAL observatories; Subject Term: HIGH school students; Subject Term: MIDDLE school students; Subject Term: HIGH school teachers; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.actaastro.2016.09.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119511122&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zherebtsov, S.V. AU - Kudryavtsev, E.A. AU - Salishchev, G.A. AU - Straumal, B.B. AU - Semiatin, S.L. T1 - Microstructure evolution and mechanical behavior of ultrafine Ti[sbnd]6Al[sbnd]4V during low-temperature superplastic deformation. JO - Acta Materialia JF - Acta Materialia Y1 - 2016/12// VL - 121 M3 - Article SP - 152 EP - 163 SN - 13596454 AB - The influence of microstructure evolution on the low-temperature superplasticity of ultrafine Ti 6Al 4V was established. For this purpose, the static and dynamic coarsening response and plastic-flow behavior of the alloy with a mean size of α (sub)grains and β particles of 0.1–0.4 μm were determined via a series of tension tests at temperatures between 450 and 700 °C. Both static and dynamic coarsening exhibited diffusion-controlled ( r 3 -vs-time) kinetics. However, dynamic coarsening was approximately two orders of magnitude faster than the corresponding static behaviors due to enhanced diffusion through the deformed β matrix. A total elongation of 1000% and strain-rate-sensitivity exponent m = 0.48 were obtained at 550 °C and 2 × 10 −4 s −1 . Very limited cavitation was observed in the specimens after superplastic deformation under optimal conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM-aluminum-vanadium alloys KW - METALS -- Microstructure KW - EFFECT of temperature on metals KW - SUPERPLASTICITY KW - DEFORMATIONS (Mechanics) KW - METALS -- Mechanical properties KW - Low-temperature superplasticity KW - Microstructure coarsening KW - Titanium alloy KW - Ultrafine structure N1 - Accession Number: 119002975; Zherebtsov, S.V. 1; Email Address: zherebtsov@bsu.edu.ru Kudryavtsev, E.A. 1 Salishchev, G.A. 1 Straumal, B.B. 2,3 Semiatin, S.L. 4; Affiliation: 1: Laboratory of Bulk Nanostructured Materials, Belgorod State University, 85 Pobeda Str., Belgorod, 308015, Russia 2: Institute of Solid State Physics, Russian Academy of Sciences, Ac. Ossipyan Str. 2, 142432, Chernogolovka, Russia 3: National University of Science and Technology «MISIS», Leninskii Prosp. 4, 119049, Moscow, Russia 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, OH, 45433-7817, USA; Source Info: Dec2016, Vol. 121, p152; Subject Term: TITANIUM-aluminum-vanadium alloys; Subject Term: METALS -- Microstructure; Subject Term: EFFECT of temperature on metals; Subject Term: SUPERPLASTICITY; Subject Term: DEFORMATIONS (Mechanics); Subject Term: METALS -- Mechanical properties; Author-Supplied Keyword: Low-temperature superplasticity; Author-Supplied Keyword: Microstructure coarsening; Author-Supplied Keyword: Titanium alloy; Author-Supplied Keyword: Ultrafine structure; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.actamat.2016.09.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119002975&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - DeCarlo, Erin C. AU - Smarslok, Benjamin P. AU - Mahadevan, Sankaran T1 - Segmented Bayesian Calibration of Multidisciplinary Models. JO - AIAA Journal JF - AIAA Journal Y1 - 2016/12// VL - 54 IS - 12 M3 - Article SP - 3727 EP - 3741 SN - 00011452 AB - This paper investigates Bayesian model calibration for multidisciplinary problems that involve several disciplinary models and multiple sources of data regarding individual and combined physics. A segmented approach is explored as an alternative to simultaneous calibration of the parameters and discrepancy terms of all the component models. Simultaneous Bayesian calibration requires conducting inference on all uncertain parameters using all models and data concurrently. This can lead to significant computational burden and ambiguity regarding each individual model's contribution to the overall prediction uncertainty. Segmented Bayesian model calibration is first investigated with two illustrative mathematical examples and the performance of this strategy is examined for different characteristics of the problem (i.e., model dependence and data availability). The Kullback-Leibler divergence and the Bayes factor metric are used to compare the computational effort and accuracy of the segmented and simultaneous calibration strategies. The segmented approach is observed to yield comparable prediction uncertainty with fewer samples than simultaneous calibration for the multidisciplinary scenarios considered. The strategies are then applied to the estimation of model discrepancy in aerodynamic pressure and heat flux models using high-speed wind-tunnel data. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 120008308; DeCarlo, Erin C. 1,2 Smarslok, Benjamin P. 3,4 Mahadevan, Sankaran 5,6; Affiliation: 1: Graduate Fellow, Civil and Environmental Engineering Department, Vanderbilt University, Nashville, Tennessee 37235 2: Student Member AIAA, Vanderbilt University, Nashville, Tennessee 37235 3: Research Aerospace Engineer, Air Vehicles Directorate, Structural Sciences Center, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 4: Member AIAA, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 5: John R. Murray Senior Professor of Engineering, Civil and Environmental Engineering Department, Vanderbilt University, Nashville, Tennessee 37235 6: Associate Fellow AIAA, Vanderbilt University, Nashville, Tennessee 37235; Source Info: Dec2016, Vol. 54 Issue 12, p3727; Number of Pages: 15p; Document Type: Article L3 - 10.2514/1.J054960 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120008308&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 120175822 T1 - Cumulative effective radiation dose received by blunt trauma patients arriving to a military level I trauma center from point of injury and interhospital transfers. AU - Van Arnem, Kerri A. AU - Jr.Supinski, David P. AU - Tucker, Jonathan E. AU - Varney, Shawn AU - Supinski, David P Jr Y1 - 2016/12// N1 - Accession Number: 120175822. Language: English. Entry Date: In Process. Revision Date: 20170210. Publication Type: journal article. Journal Subset: Allied Health; Biomedical; Double Blind Peer Reviewed; Peer Reviewed; USA. NLM UID: 8309942. SP - 2397 EP - 2401 JO - American Journal of Emergency Medicine JF - American Journal of Emergency Medicine JA - AM J EMERG MED VL - 34 IS - 12 CY - Philadelphia, Pennsylvania PB - Elsevier Inc. AB - Background: Trauma patients sustaining blunt injuries are exposed to multiple radiologic studies. Evidence indicates that the risk of cancer from exposure to ionizing radiation rises in direct proportion to the cumulative effective dose (CED) received. The purpose of this study is to quantify the amount of ionizing radiation accumulated when arriving directly from point of injury to San Antonio Military Medical Center (SAMMC), a level I trauma center, compared with those transferred from other facilities.Methods: A retrospective record review was conducted from 1st January 2010 through 31st December 2012. The SAMMC trauma registry, electronic medical records, and the digital radiology imaging system were searched for possible candidates. The medical records were then analyzed for sex, age, mechanism of injury, received directly from point of injury (direct group), transfer from another medical facility (transfer group), computed tomographic scans received, dose-length product, CED of radiation, and injury severity score. A diagnostic imaging physicist then calculated the estimated CED each subject received based on the dose-length product of each computed tomographic scan.Results: A total of 300 patients were analyzed, with 150 patients in the direct group and 150 patients in the transfer group. Both groups were similar in age and sex. Patients in the transfer group received a significantly greater CED of radiation compared with the direct group (mean, 37.6 mSv vs 28 mSv; P=.001). The radiation received in the direct group correlates with a lifetime attributable risk (LAR) of 1 in 357 compared with the transfer group with an increase in LAR to 1 in 266.Conclusion: Patients transferred to our facility received a 34% increase in ionizing radiation compared with patients brought directly from the injury scene. This increased dose of ionizing radiation contributes to the LAR of cancer and needs to be considered before repeating imaging studies.Level Of Evidence: III. SN - 0735-6757 AD - Department of Emergency Medicine, United States Army, San Antonio Military Medical Center, San Antonio, TX AD - Department of Emergency Medicine, United States Air Force, San Antonio Military Medical Center, San Antonio, TX AD - Department of Radiology, San Antonio Military Medical Center, San Antonio, TX AD - Department of Emergency Medicine, USUHS, San Antonio Military Medical Center, San Antonio, TX U2 - PMID: 27727069. DO - 10.1016/j.ajem.2016.09.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=120175822&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Bojanowski, Caitlin L. AU - Crookes-Goodson, Wendy J. AU - Robinson, Jayne B. T1 - Use of bacteriophage to prevent Pseudomonas aeruginosa contamination and fouling in Jet A aviation fuel. JO - Biofouling JF - Biofouling Y1 - 2016/12// VL - 32 IS - 10 M3 - Article SP - 1163 EP - 1170 SN - 08927014 AB - In the present study, the use of bacteriophages to prevent growth and/or biofouling by Pseudomonas aeruginosa PAO1 was investigated in microcosms containing Jet A aviation fuel as the carbon source. Bacteriophages were found to be effective at preventing biofilm formation but did not always prevent planktonic growth in the microcosms. This result was at odds with experiments conducted in nutrient-rich medium, demonstrating the necessity to test antimicrobial and antifouling strategies under conditions as near as possible to the 'real world'. The success of the bacteriophages at preventing biofilm formation makes them potential candidates as antifouling agents for fuel systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Biofouling is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Bacteriophages KW - FUEL KW - Carbon -- Physiological effect KW - Pseudomonas aeruginosa KW - Fouling KW - Airplanes KW - Microcosm & macrocosm KW - antifouling KW - Bacteriophage KW - biofilm KW - fuel KW - Jet A N1 - Accession Number: 119369089; Bojanowski, Caitlin L. 1; Crookes-Goodson, Wendy J. 2; Robinson, Jayne B. 1; Email Address: JRobinson2@udayton.edu; Affiliations: 1: Department of Biology, University of Dayton, Dayton, OH, USA; 2: Soft Matter Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Issue Info: 2016, Vol. 32 Issue 10, p1163; Thesaurus Term: Bacteriophages; Thesaurus Term: FUEL; Thesaurus Term: Carbon -- Physiological effect; Subject Term: Pseudomonas aeruginosa; Subject Term: Fouling; Subject Term: Airplanes; Subject Term: Microcosm & macrocosm; Author-Supplied Keyword: antifouling; Author-Supplied Keyword: Bacteriophage; Author-Supplied Keyword: biofilm; Author-Supplied Keyword: fuel; Author-Supplied Keyword: Jet A; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 8p; Document Type: Article L3 - 10.1080/08927014.2016.1239084 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=119369089&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Kanel, Sushil R. AU - Misak, Heath AU - Nepal, Dhriti AU - Mall, Shankar AU - Brittle, Seth W. AU - Sizemore, Ioana AU - Kempisty, David M. AU - Goltz, Mark N. T1 - The use of carbon nanotube yarn as a filter medium to treat nitroaromatic-contaminated water. JO - Carbon JF - Carbon Y1 - 2016/12// VL - 110 M3 - Article SP - 522 EP - 522 SN - 00086223 KW - CARBON nanotubes KW - FILTERS & filtration KW - NITROAROMATIC compounds KW - WATER pollution KW - YARN N1 - Accession Number: 118716174; Kanel, Sushil R. 1 Misak, Heath 2 Nepal, Dhriti 3 Mall, Shankar 2 Brittle, Seth W. 4 Sizemore, Ioana 4 Kempisty, David M. 1 Goltz, Mark N. 1; Affiliation: 1: Department of Systems Engineering and Management, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433-7765, USA 2: Department of Aeronautics and Astronautics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433-7765, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7702, USA 4: Department of Chemistry, Wright State University, 3640 Colonel Glen Highway, Dayton, OH 45435, USA; Source Info: Dec2016, Vol. 110, p522; Subject Term: CARBON nanotubes; Subject Term: FILTERS & filtration; Subject Term: NITROAROMATIC compounds; Subject Term: WATER pollution; Subject Term: YARN; NAICS/Industry Codes: 414130 Piece goods, notions and other dry goods merchant wholesalers; NAICS/Industry Codes: 325220 Artificial and Synthetic Fibers and Filaments Manufacturing; NAICS/Industry Codes: 313220 Narrow Fabric Mills and Schiffli Machine Embroidery; NAICS/Industry Codes: 313110 Fiber, Yarn, and Thread Mills; NAICS/Industry Codes: 424310 Piece Goods, Notions, and Other Dry Goods Merchant Wholesalers; Number of Pages: 1p; Document Type: Article L3 - 10.1016/j.carbon.2016.08.069 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118716174&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Machovina, Brian L. AU - Feeley, Kenneth J. AU - Machovina, Brett J. T1 - UAV remote sensing of spatial variation in banana production. JO - Crop & Pasture Science JF - Crop & Pasture Science Y1 - 2016/12// VL - 67 IS - 12 M3 - Article SP - 1281 EP - 1287 SN - 18360947 AB - Remote sensing through Unmanned Aerial Vehicles (UAV) can potentially be used to identify the factors influencing agricultural yield and thereby increase production efficiency. The use of UAV remains largely underutilised in tropical agricultural systems. In this study we tested a fixed-wing UAV system equipped with a sensor system for mapping spatial patterns of photosynthetic activity in banana plantations in Costa Rica. Spatial patterns derived from the Normalised Difference Vegetation Index (NDVI) were compared with spatial patterns of physical soil quality and banana fruit production data. We found spatial patterns of NDVI were significantly positively correlated with spatial patterns of several metrics of fruit yield and quality: bunch weight, number of hands per bunch, length of largest finger, and yield. NDVI was significantly negatively correlated with banana loss (discarded due to low quality). Spatial patterns of NDVI were not correlated with spatial patterns of physical soil quality. These results indicate that UAV systems can be used in banana plantations to help map patterns of fruit quality and yield, potentially aiding investigations of spatial patterns of underlying factors affecting production and thereby helping to increase agricultural efficiency. [ABSTRACT FROM AUTHOR] AB - Copyright of Crop & Pasture Science is the property of CSIRO Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REMOTE sensing KW - BANANAS KW - AGRICULTURAL productivity KW - crop productivity KW - Musa KW - NDVI N1 - Accession Number: 120280454; Machovina, Brian L. 1; Email Address: brianmachovina@gmail.com Feeley, Kenneth J. 1 Machovina, Brett J. 2; Affiliation: 1: Department of Biological Sciences, Florida International University, Miami, FL 33199, USA; and The Fairchild Tropical Botanic Garden, Coral Gables, FL 33156, USA 2: Department of Economics and Geosciences, United States Air Force Academy, CO 97331, USA; Source Info: 2016, Vol. 67 Issue 12, p1281; Subject Term: REMOTE sensing; Subject Term: BANANAS; Subject Term: AGRICULTURAL productivity; Author-Supplied Keyword: crop productivity; Author-Supplied Keyword: Musa; Author-Supplied Keyword: NDVI; NAICS/Industry Codes: 115114 Postharvest Crop Activities (except Cotton Ginning); NAICS/Industry Codes: 413150 Fresh fruit and vegetable merchant wholesalers; NAICS/Industry Codes: 111339 Other Noncitrus Fruit Farming; NAICS/Industry Codes: 111330 Non-citrus fruit and tree nut farming; Number of Pages: 7p; Document Type: Article L3 - 10.1071/CP16135 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120280454&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Greenewald, Kristjan AU - Zelnio, Edmund AU - Hero, Alfred Hero T1 - Robust SAR STAP via Kronecker decomposition. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2016/12// VL - 52 IS - 6 M3 - Article SP - 2612 EP - 2625 SN - 00189251 AB - This paper proposes a spatiotemporal decomposition for the detection of moving targets in multi-antenna synthetic aperture radar (SAR). As a high-resolution radar imaging modality, SAR detects and localizes nonmoving targets accurately, giving it an advantage over lower-resolution ground-moving target indication (GMTI) radars. Moving target detection is more challenging due to target smearing and masking by clutter. Space-time adaptive processing (STAP) is often used to remove the stationary clutter and enhance the moving targets. In this work, it is shown that the performance of STAP can be improved by modeling the clutter covariance as a space versus time Kronecker product with low-rank factors. Based on this model, a low-rank Kronecker product covariance estimation algorithm is proposed, and a novel separable clutter cancelation filter based on the Kronecker covariance estimate is introduced. The proposed method provides orders of magnitude reduction in the required number of training samples as well as improved robustness to corruption of the training data. Simulation results and experiments using the Gotcha SAR GMTI challenge dataset are presented that confirm the advantages of our approach relative to existing techniques. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - KRONECKER delta KW - RADAR KW - SPACE-time adaptive signal processing KW - CLUTTER (Radar) KW - ANALYSIS of covariance KW - Antenna arrays KW - Clutter KW - Robustness KW - Spatiotemporal phenomena KW - Synthetic aperture radar KW - Training N1 - Accession Number: 121340827; Greenewald, Kristjan 1 Zelnio, Edmund 2 Hero, Alfred Hero 3; Affiliation: 1: Student Member, IEEE University of Michigan, Ann Arbor, MI USA 2: Air Force Research Laboratory, Wright Patterson Air Force Base, OH USA 3: Fellow, IEEE University of Michigan, Ann Arbor, MI USA; Source Info: Dec2016, Vol. 52 Issue 6, p2612; Subject Term: KRONECKER delta; Subject Term: RADAR; Subject Term: SPACE-time adaptive signal processing; Subject Term: CLUTTER (Radar); Subject Term: ANALYSIS of covariance; Author-Supplied Keyword: Antenna arrays; Author-Supplied Keyword: Clutter; Author-Supplied Keyword: Robustness; Author-Supplied Keyword: Spatiotemporal phenomena; Author-Supplied Keyword: Synthetic aperture radar; Author-Supplied Keyword: Training; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TAES.2016.150712 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121340827&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Venable, Donald T. AU - Raquet, John F. T1 - Large scale image aided navigation. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2016/12// VL - 52 IS - 6 M3 - Article SP - 2849 EP - 2860 SN - 00189251 AB - Currently, most airborne platforms use an Inertial Measurement Unit (IMU) to provide estimates of aircraft position, velocity, and attitude. Errors in the IMU result in a position solution that drifts over time. In order to counteract IMU drift, platforms typically integrate measurements from Global Navigation Satellite Systems (GNSS). However, many military and civilian scenarios encounter situations where GNSS may be unavailable due to intentional jamming, or when operating in challenging environments. Many solutions have been proposed that use images from an airborne camera to match features against a reference image to compute global position. These techniques require a relatively accurate prior estimate of position to converge. This leads to a situation where platforms being denied GNSS pass a threshold of position error due to IMU drift, from which current image-aided navigation system cannot recover. This paper presents a novel localization algorithm inspired by fusing state of the art Content Based Image Retrieval techniques with nonparametric Bayesian estimation strategies. We outline the framework for performing a search of a large-scale image database in order to provide a rough position estimate to an airborne platform. These techniques are analogous to solving the ?kidnapped-robot? problem, applied to airborne platforms. This framework is evaluated using actual data collected from an airborne camera and navigation system. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LARGE scale systems KW - VELOCITY KW - GLOBAL Positioning System KW - NONPARAMETRIC estimation KW - BAYESIAN analysis KW - Aircraft navigation KW - Algorithm design and analysis KW - Cameras KW - Feature extraction KW - Military aircraft KW - Visualization N1 - Accession Number: 121340844; Venable, Donald T. 1 Raquet, John F. 2; Affiliation: 1: Air Force Research Laboratory Wright Patterson Air Force Base, OH, USA 2: Air Force Institute of Technology Wright Patterson Air Force Base, OH, USA; Source Info: Dec2016, Vol. 52 Issue 6, p2849; Subject Term: LARGE scale systems; Subject Term: VELOCITY; Subject Term: GLOBAL Positioning System; Subject Term: NONPARAMETRIC estimation; Subject Term: BAYESIAN analysis; Author-Supplied Keyword: Aircraft navigation; Author-Supplied Keyword: Algorithm design and analysis; Author-Supplied Keyword: Cameras; Author-Supplied Keyword: Feature extraction; Author-Supplied Keyword: Military aircraft; Author-Supplied Keyword: Visualization; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TAES.2016.150603 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121340844&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Matveev, Igor AU - Ombrello, Timothy T1 - Guest Editorial Introduction to the Special Issue on Plasma-Assisted Technologies December 2016. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2016/12//Dec2016 Part 1 VL - 44 IS - 12 M3 - Article SP - 2938 EP - 2939 SN - 00933813 AB - This is the 11th issue in a series of special issues on plasma-assisted technologies. Herein contains a host of new and exciting applications and refinement of plasma-based systems. The range of material is a testament to the expansion and diversity of possibilities using plasmas, and follows on the success of the ten previous issues. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA chemistry KW - TECHNICAL chemistry KW - PLASMA (Ionized gases) KW - CHEMICAL processes KW - TECHNOLOGY KW - Plasma applications KW - Plasma-assisted combustion KW - Plasmas KW - Special issues and sections N1 - Accession Number: 120167687; Matveev, Igor 1 Ombrello, Timothy 2; Affiliation: 1: Applied Plasma Technologies, LLC, McLean, VA, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Dec2016 Part 1, Vol. 44 Issue 12, p2938; Subject Term: PLASMA chemistry; Subject Term: TECHNICAL chemistry; Subject Term: PLASMA (Ionized gases); Subject Term: CHEMICAL processes; Subject Term: TECHNOLOGY; Author-Supplied Keyword: Plasma applications; Author-Supplied Keyword: Plasma-assisted combustion; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Special issues and sections; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2016.2631758 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120167687&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hoisington, A. AU - Maestre, J. P. AU - Kinney, K. A. AU - Siegel, J. A. T1 - Characterizing the bacterial communities in retail stores in the United States. JO - Indoor Air JF - Indoor Air Y1 - 2016/12// VL - 26 IS - 6 M3 - Article SP - 857 EP - 868 SN - 09056947 AB - The microorganisms present in retail environments have not been studied in detail despite the fact that these environments represent a potentially important location for exposure. In this study, HVAC filter dust samples in 13 US retail stores were collected and analyzed via pyrosequencing to characterize the indoor bacterial communities and to explore potential relationships between these communities and building and environmental parameters. Although retail stores contained a diverse bacterial community of 788 unique genera, over half of the nearly 118K sequences were attributed to the Proteobacteria phylum. Streptophyta, Bacillus, Corynebacterium, Pseudomonas, and Acinetobacter were the most prevalent genera detected. The recovered indoor airborne microbial community was statistically associated with both human oral and skin microbiota, indicating occupants are important contributors, despite a relatively low occupant density per unit volume in retail stores. Bacteria generally associated with outdoor environments were present in the indoor communities with no obvious association with air exchange rate, even when considering relative abundance. No significant association was observed between the indoor bacterial community recovered and store location, store type, or season. However, predictive functional gene profiling showed significant associations between the indoor community and season. The microbiome recovered from multiple samples collected months apart from the same building varied significantly indicating that caution is warranted when trying to characterize the bacterial community with a single sampling event. [ABSTRACT FROM AUTHOR] AB - Copyright of Indoor Air is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Bacterial communities KW - Retail stores KW - Corynebacterium KW - Prediction models KW - United States KW - 16S KW - Bacteria KW - Human microbiome KW - HVAC filter dust KW - Pyrosequencing N1 - Accession Number: 119458746; Hoisington, A. 1; Maestre, J. P. 2; Kinney, K. A. 2; Siegel, J. A. 3,4; Affiliations: 1: Department of Civil and Environmental Engineering, The United States Air Force Academy; 2: Department of Civil, Architectural, and Environmental Engineering, The University of Texas at Austin; 3: Department of Civil Engineering, University of Toronto; 4: Dalla Lana School of Public Health, University of Toronto; Issue Info: Dec2016, Vol. 26 Issue 6, p857; Thesaurus Term: Bacterial communities; Thesaurus Term: Retail stores; Subject Term: Corynebacterium; Subject Term: Prediction models; Subject: United States; Author-Supplied Keyword: 16S; Author-Supplied Keyword: Bacteria; Author-Supplied Keyword: Human microbiome; Author-Supplied Keyword: HVAC filter dust; Author-Supplied Keyword: Pyrosequencing; NAICS/Industry Codes: 452999 All other miscellaneous general merchandise stores; NAICS/Industry Codes: 453999 All other miscellaneous store retailers (except beer and wine-making supplies stores); NAICS/Industry Codes: 453998 All Other Miscellaneous Store Retailers (except Tobacco Stores); NAICS/Industry Codes: 236220 Commercial and Institutional Building Construction; Number of Pages: 12p; Document Type: Article L3 - 10.1111/ina.12273 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=119458746&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Gruenwald, Benjamin C. AU - Wagner, Daniel AU - Yucelen, Tansel AU - Muse, Jonathan A. T1 - Computing actuator bandwidth limits for model reference adaptive control. JO - International Journal of Control JF - International Journal of Control Y1 - 2016/12// VL - 89 IS - 12 M3 - Article SP - 2434 EP - 2452 SN - 00207179 AB - Although model reference adaptive control theory has been used in numerous applications to achieve system performance without excessive reliance on dynamical system models, the presence of actuator dynamics can seriouslylimitthe stability and the achievable performance of adaptive controllers. In this paper, a linear matrix inequalities-based hedging approach is developed and evaluated for model reference adaptive control of uncertain dynamical systems in the presence of actuator dynamics. The hedging method modifies the ideal reference model dynamics in order to allowcorrectadaptation that is not affected by the presence of actuator dynamics. Specifically, wefirstgeneralise the hedging approach to cover a variety of cases in which actuator output and the control effectiveness matrix of the uncertain dynamical system areknownandunknown. Wethenshow the stability of the closed-loop dynamical system using Lyapunov-based stability analysis tools and propose a linear matrix inequality-based framework for the computation of the minimum allowable actuator bandwidth limits such that the closed-loop dynamical system remains stable. Finally, an illustrative numerical example is provided to demonstrate the efficacy of the proposed approach. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Control is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACTUATORS KW - BANDWIDTHS KW - ADAPTIVE control systems KW - DYNAMICAL systems KW - LINEAR matrix inequalities KW - CLOSED loop systems KW - actuator dynamics KW - hedging approach KW - linear matrix inequalities KW - Model reference adaptive control KW - uncertain dynamical systems N1 - Accession Number: 119784418; Gruenwald, Benjamin C. 1 Wagner, Daniel 1 Yucelen, Tansel 1 Muse, Jonathan A. 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, MO, United States 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH, United States; Source Info: Dec2016, Vol. 89 Issue 12, p2434; Subject Term: ACTUATORS; Subject Term: BANDWIDTHS; Subject Term: ADAPTIVE control systems; Subject Term: DYNAMICAL systems; Subject Term: LINEAR matrix inequalities; Subject Term: CLOSED loop systems; Author-Supplied Keyword: actuator dynamics; Author-Supplied Keyword: hedging approach; Author-Supplied Keyword: linear matrix inequalities; Author-Supplied Keyword: Model reference adaptive control; Author-Supplied Keyword: uncertain dynamical systems; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 19p; Document Type: Article L3 - 10.1080/00207179.2016.1161236 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119784418&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Halls, B.R. AU - Roy, S. AU - Gord, J.R. AU - Kastengren, A.L. AU - Meyer, T.R. T1 - Quantitative imaging of single-shot liquid distributions in sprays using broadband flash x-ray radiography. JO - International Journal of Multiphase Flow JF - International Journal of Multiphase Flow Y1 - 2016/12// VL - 87 M3 - Article SP - 241 EP - 249 SN - 03019322 AB - Flash x-ray radiography is used to capture quantitative, two-dimensional line-of-sight averaged, single-shot liquid distribution measurements in impinging jet sprays. The accuracy of utilizing broadband x-ray radiation from compact flash tube sources is investigated for a range of conditions by comparing the data with radiographic high-speed measurements from a narrowband, high-intensity synchrotron x-ray facility at the Advanced Photon Source (APS) of Argonne National Laboratory. The path length of the liquid jets is varied to evaluate the effects of energy dependent x-ray attenuation, also known as spectral beam hardening. The spatial liquid distributions from flash x-ray and synchrotron-based radiography are compared, along with spectral characteristics using Taylor's hypothesis. The results indicate that quantitative, single-shot imaging of liquid distributions can be achieved using broadband x-ray sources with nanosecond temporal resolution. Practical considerations for optimizing the imaging system performance are discussed, including the coupled effects of x-ray bandwidth, contrast, sensitivity, spatial resolution, temporal resolution, and spectral beam hardening. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Multiphase Flow is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLASH radiography KW - WATER jets KW - SYNCHROTRON radiation KW - SPECTRAL imaging KW - PHOTON emission KW - DESIGN & construction KW - Flash x-ray KW - Impinging jet KW - Liquid distribution KW - Spray imaging KW - Synchrotron radiation KW - X-ray radiography N1 - Accession Number: 118542667; Halls, B.R. 1,2 Roy, S. 3 Gord, J.R. 2 Kastengren, A.L. 4 Meyer, T.R. 1,5; Email Address: trmeyer@purdue.edu; Affiliation: 1: Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA 2: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, OH 45433, USA 3: Spectral Energies, LLC, Dayton, OH 45431, USA 4: X-Ray Science Division, Argonne National Laboratory, Argonne, IL 60439, USA 5: School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA; Source Info: Dec2016, Vol. 87, p241; Subject Term: FLASH radiography; Subject Term: WATER jets; Subject Term: SYNCHROTRON radiation; Subject Term: SPECTRAL imaging; Subject Term: PHOTON emission; Subject Term: DESIGN & construction; Author-Supplied Keyword: Flash x-ray; Author-Supplied Keyword: Impinging jet; Author-Supplied Keyword: Liquid distribution; Author-Supplied Keyword: Spray imaging; Author-Supplied Keyword: Synchrotron radiation; Author-Supplied Keyword: X-ray radiography; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijmultiphaseflow.2016.09.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118542667&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wisniewski, Matthew G. AU - Romigh, Griffin D. AU - Kenzig, Stephanie M. AU - Iyer, Nandini AU - Simpson, Brian D. AU - Thompson, Eric R. AU - Rothwell, Clayton D. T1 - Enhanced auditory spatial performance using individualized head-related transfer functions: An event-related potential study. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2016/12// VL - 140 IS - 6 M3 - Article SP - EL539 EP - EL544 SN - 00014966 AB - This study examined event-related potential (ERP) correlates of auditory spatial benefits gained from rendering sounds with individualized head-related transfer functions (HRTFs). Noise bursts with identical virtual elevations (0°-90°) were presented back-to-back in 5-10 burst "runs" in a roving oddball paradigm. Detection of a run's start (i.e., elevation change detection) was enhanced when bursts were rendered with an individualized compared to a non-individualized HRTF. ERPs showed increased P3 amplitudes to first bursts of a run in the individualized HRTF condition. Condition differences in P3 amplitudes and behavior were positively correlated. Data suggests that part of the individualization benefit reflects post-sensory processes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSFER functions (Mathematics) KW - NOISE KW - SOUND KW - CONTROL theory (Mathematics) KW - FUNCTIONS (Mathematics) N1 - Accession Number: 120512916; Wisniewski, Matthew G. 1; Email Address: matt.g.wisniewski@gmail.com Romigh, Griffin D. 1; Email Address: griffin.romigh@us.af.mil Kenzig, Stephanie M. 1; Email Address: stephanie.kenzig.ctr@us.af.mil Iyer, Nandini 1; Email Address: nandini.iyer.2@us.af.mil Simpson, Brian D. 1; Email Address: brian.simpson.4@us.af.mil Thompson, Eric R. 1; Email Address: eric.thompson.28@us.af.mil Rothwell, Clayton D. 2; Email Address: clayton.rothwell.ctr@us.af.mil; Affiliation: 1: 711th Human Performance Wing, United States Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Infoscitex Corporation, Dayton, Ohio 45431, USA; Source Info: Dec2016, Vol. 140 Issue 6, pEL539; Subject Term: TRANSFER functions (Mathematics); Subject Term: NOISE; Subject Term: SOUND; Subject Term: CONTROL theory (Mathematics); Subject Term: FUNCTIONS (Mathematics); Number of Pages: 6p; Document Type: Article L3 - 10.1121/1.4972301 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120512916&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hill, Theresa. Y. AU - Reitz, Thomas L. AU - Huang, Hong T1 - Controlling micro ceramic patterns via multiple/sequential drop-on-demand inkjet printing of dilute colloidal suspensions. JO - Materials Research Bulletin JF - Materials Research Bulletin Y1 - 2016/12// VL - 84 M3 - Article SP - 437 EP - 444 SN - 00255408 AB - Drop-on-demand (DOD) inkjet printing has great potential for fabricating miniature ceramic devices that are currently constructed by more complicated, time consuming, and costly procedures. In this study, micro La 0.6 Sr 0.4 Fe 0.8 Co 0.2 O 3 (LSFC) patterns are crafted via DOD inkjet printing. A dilute solid-solvent colloidal ink suspension composed of LSFC, a common solid oxide fuel cell (SOFC) cathode material, suspended in α-terpineol solvent, was printed with multiple, sequential inkjet passes. Critical process parameters were identified and tuned to achieve acceptable layer to layer deposition accuracy. Micro 0-D dots and micro 1-D lines with x/y dimensions <100 μm and z-axis dimensions <1 μm were demonstrated. Addition of ethyl cellulose to the ink resulted in unique ‘volcano’ features which may benefit miniature SOFCs with a density shift between the feature’s center and ridge. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Research Bulletin is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INK-jet printing KW - DILUTE alloys KW - COLLOIDAL suspensions KW - MICROFABRICATION KW - LANTHANUM compounds KW - SOLVENTS KW - Ceramics KW - Deposition KW - Electrochemical properties KW - Electron microscopy KW - Microstructure KW - Thin films N1 - Accession Number: 118077581; Hill, Theresa. Y. 1,2; Email Address: theresa.hill.2@us.af.mil Reitz, Thomas L. 1; Email Address: thomas.reitz@us.af.mil Huang, Hong 2; Email Address: Hong.huang@wright.edu; Affiliation: 1: Aerospace Systems Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, 45433, USA 2: Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH, 45435, USA; Source Info: Dec2016, Vol. 84, p437; Subject Term: INK-jet printing; Subject Term: DILUTE alloys; Subject Term: COLLOIDAL suspensions; Subject Term: MICROFABRICATION; Subject Term: LANTHANUM compounds; Subject Term: SOLVENTS; Author-Supplied Keyword: Ceramics; Author-Supplied Keyword: Deposition; Author-Supplied Keyword: Electrochemical properties; Author-Supplied Keyword: Electron microscopy; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Thin films; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.materresbull.2016.08.035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118077581&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Annam, Kaushik AU - Kumar Khah, Sunil AU - Dooley, Steven AU - Cerny, Charles AU - Subramanyam, Guru T1 - Experimental design of bandstop filters based on unconventional defected ground structures. JO - Microwave & Optical Technology Letters JF - Microwave & Optical Technology Letters Y1 - 2016/12// VL - 58 IS - 12 M3 - Article SP - 2969 EP - 2973 SN - 08952477 AB - ABSTRACT A modified design of band stop filters using unconventional defected ground structures (DGS) is presented. The new proposed structures have conventional dumbbell DGS and spiral DGS integrated with U-slots. These microstrip structures provide high selectivity and Q-factor. By integrating the U-slot to the conventional structures, the overall capacitance and inductance increase which results in shift of resonance frequency from3.434 GHz to2.323 GHz for modified dumbbell and from 1.818 GHz to 1.702 GHz for modified spiral structure. Sharp transition is achieved from pass band to stop band and reduced ripples in the pass band for the new proposed DGS while the DGS sizes remain the same. The proposed designs were fabricated and tested on a dielectric substrate with dielectric permittivity of 10. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2969-2973, 2016 [ABSTRACT FROM AUTHOR] AB - Copyright of Microwave & Optical Technology Letters is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BANDPASS filters KW - MICROSTRIP filters KW - QUALITY factor meters KW - ELECTRIC capacity KW - PERMITTIVITY KW - band stop filters KW - defected ground structures (DGS) KW - dumbbell U-slot KW - spiral U-slot N1 - Accession Number: 118280782; Annam, Kaushik 1 Kumar Khah, Sunil 2 Dooley, Steven 3 Cerny, Charles 3 Subramanyam, Guru 1; Affiliation: 1: Department of Electrical & Computer Engineering, University of Dayton 2: Electromagnetic Analysis Lab, Jaypee University of Information Technology 3: Air Force Research Laboratory, Sensors Directorate, WPAFB; Source Info: Dec2016, Vol. 58 Issue 12, p2969; Subject Term: BANDPASS filters; Subject Term: MICROSTRIP filters; Subject Term: QUALITY factor meters; Subject Term: ELECTRIC capacity; Subject Term: PERMITTIVITY; Author-Supplied Keyword: band stop filters; Author-Supplied Keyword: defected ground structures (DGS); Author-Supplied Keyword: dumbbell U-slot; Author-Supplied Keyword: spiral U-slot; Number of Pages: 5p; Illustrations: 2 Diagrams, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1002/mop.30192 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118280782&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hui Wan AU - Patnaik, Soumya S. T1 - Suppression of vortex-induced vibration of a circular cylinder using thermal effects. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2016/12// VL - 28 IS - 12 M3 - Article SP - 1 EP - 22 SN - 10706631 AB - Transverse vortex-induced vibration (VIV) of a cylinder with various body-to-fluid density ratio and stiffness is studied. The cylinder is elastically mounted and heated, and the flow direction is aligned with the direction of the thermal induced buoyancy force. Amplitude of VIV can be reduced as the thermal control parameter Richardson number (Ri) increases, or even be fully suppressed when Ri is above a critical value. This critical Richardson number depends on both body-to-fluid density and structural stiffness. A higher critical Richardson is required to fully suppress the VIV of a structure with smaller density ratio. With the same density or mass, a structure with intermediate stiffness vibrating in lock-in regime needs higher critical Ri to suppress VIV than either rigid or flexible structures. Drag experienced by the body is also studied. It is found that for a flexible body, drag gradually increases with the Richardson number. For a body with intermediate stiffness, both drag and amplitude of VIV can be reduced until the Richardson number reaches the critical value, after which drag builds up if the Richardson number is further increased. A drag reduction of 30%-40% can be obtained at the critical Richardson number. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RICHARDSON number KW - BUOYANCY KW - STIFFNESS (Mechanics) KW - FLUX flow KW - THERMAL analysis N1 - Accession Number: 120525596; Hui Wan 1,2; Email Address: hwan@ues.com Patnaik, Soumya S. 1; Email Address: soumya.patnaik.1@us.af.mil; Affiliation: 1: Power and Control Division, Aerospace Systems Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 2: UES, Inc., 4401 Dayton-Xenia Road, Dayton, Ohio 45432, USA; Source Info: 2016, Vol. 28 Issue 12, p1; Subject Term: RICHARDSON number; Subject Term: BUOYANCY; Subject Term: STIFFNESS (Mechanics); Subject Term: FLUX flow; Subject Term: THERMAL analysis; Number of Pages: 22p; Illustrations: 1 Diagram, 8 Charts, 21 Graphs; Document Type: Article L3 - 10.1063/1.4972178 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120525596&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chiang, Sheau-Yun (Dora) AU - Anderson, Richard (Hunter) AU - Wilken, Michael AU - Walecka-Hutchison, Claudia T1 - Practical Perspectives of 1,4-Dioxane Investigation and Remediation. JO - Remediation Journal JF - Remediation Journal Y1 - 2016///Winter2016 VL - 27 IS - 1 M3 - Article SP - 7 EP - 27 SN - 10515658 AB - 1,4-Dioxane (dioxane) is a contaminant of emerging concern that is classified by the U.S. Environmental Protection Agency as a likely human carcinogen. Dioxane has been used as a minor or major ingredient in many applications, and is also generated as an unwanted by-product of industrial processes associated with the manufacturing of polyethylene, nonionic surfactants, and many consumer products (cosmetics, laundry detergents, shampoos, etc.). Dioxane is also a known stabilizer of chlorinated solvents, particularly 1,1,1-trichloroethane, and has been commonly found comingled with chlorinated solvent plumes. Dioxane plumes at chlorinated solvent sites can complicate site closure strategies, which to date have not typically focused on dioxane. Aggressive treatment technologies have greatly advanced and are clearly capable of achieving lower parts per billion cleanup criteria using ex situ advanced oxidation processes and sorption media. In situ chemical oxidation has also been demonstrated to effectively remediate dioxane and chlorinated solvents. Other in situ remedies, such as enhanced bioremediation, phytoremediation, and monitored natural attenuation, have been studied; however, their ability to achieve cleanup levels is still somewhat questionable and is limited by co-occurring contaminants. This article summarizes and provides practical perspectives on dioxane analysis, plume stability relative to other contaminants, and the development of investigation tools and treatment technologies. [ABSTRACT FROM AUTHOR] AB - Copyright of Remediation Journal is the property of John Wiley & Sons, Inc. / Education and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 119974993; Chiang, Sheau-Yun (Dora) 1; Anderson, Richard (Hunter) 2; Wilken, Michael 3; Walecka-Hutchison, Claudia 3; Affiliations: 1: AECOM; 2: U.S. Air Force Civil Engineer Center (AFCEC), San Antonio, Texas; 3: The Dow Chemical Company, Midland, Michigan; Issue Info: Winter2016, Vol. 27 Issue 1, p7; Number of Pages: 21p; Document Type: Article L3 - 10.1002/rem.21494 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=119974993&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Noble, Cortney W. AU - Bono, Jeremy M. AU - Pigage, Helen K. AU - Hale, David W. AU - Pigage, Jon C. T1 - Fine-Scale Genetic Structure in Female Mule Deer ( Odocoileus hemionus). JO - Western North American Naturalist JF - Western North American Naturalist Y1 - 2016/12// VL - 76 IS - 4 M3 - Article SP - 417 EP - 426 PB - Monte L. Bean Life Science Museum SN - 15270904 AB - Fine-scale genetic structure in animal populations can have important consequences for evolutionary processes and can influence conservation and management decisions. Cervids often live in matrilineal social groups, and this spatial grouping can create fine-scale genetic structure among females. We used DNA and radio-location data at Fort Carson Military Reservation in south central Colorado, USA, to determine whether female mule deer ( Odocoileus hemionus) living in close proximity were more likely to be related. Spatial data were obtained over an 18-month period using data transmitted from GPS collars. Average positions for each animal were correlated with relatedness estimates calculated using 7 microsatellite loci. We found significant spatial autocorrelation for females at distances ≤1000 m, which suggests that females were frequently philopatric. In addition, females appeared to occasionally disperse over relatively longer distances, as we found evidence of related females separated by distances up to 28,000 m. Fine-scale genetic structure may have important implications for managing chronic wasting disease, which is relatively common at this site. (English) [ABSTRACT FROM AUTHOR] AB - La estructura genética a escala fina en poblaciones animales puede tener importantes consecuencias en los procesos evolutivos, ya que puede influir en las decisiones de conservación y gestión. A menudo, los cérvidos viven en grupos sociales matrilineales que pueden provocar una estructura genética a escala fina entre las hembras. Utilizamos datos de ADN y de radiolocalización en la Reserva Militar Fort Carson, en el centro-sur de Colorado, Estados Unidos de América, para determinar si las hembras de venado bura ( Odocoileus hemionus) que viven cerca están más relacionadas entre ellas. Obtuvimos datos espaciales durante un período de 18 meses, a partir de transmisores de collares con sistemas de posicionamiento global. Las ubicaciones promedio de cada animal se combinaron con estimaciones de parentesco calculadas a partir de siete loci-microsatélites. Encontramos una autocorrelación espacial significativa entre hembras en distancias ≤1000 m, lo que sugiere que las hembras son filopátricas frecuentemente. Además, las hembras parecían ocasionalmente dispersarse en distancias relativamente largas, ya que encontramos evidencia de hembras emparentadas separadas por distancias de hasta 28,000 metros. La estructura genética a una escala fina puede tener importantes implicaciones en el manejo de la caquexia crónica, que es relativamente común en esta zona. (Spanish) [ABSTRACT FROM AUTHOR] AB - Copyright of Western North American Naturalist is the property of Monte L. Bean Life Science Museum and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANIMAL genome mapping KW - ANIMALS -- Population biology -- Climatic factors KW - WILDLIFE management KW - ANIMAL reproduction KW - MULE deer N1 - Accession Number: 121081954; Noble, Cortney W. 1,2 Bono, Jeremy M. 1 Pigage, Helen K. 1 Hale, David W. 3 Pigage, Jon C. 1,4; Affiliation: 1: Department of Biology, University of Colorado, 1420 Austin Bluffs Parkway, Colorado Springs, CO 80918-3733. 2: Present address: Colorado Parks and Wildlife, 4255 Sinton Road, Colorado Springs, CO 80907. 3: Department of Biology, HQ USAFA/DFB, 2355 Faculty Drive, Suite 2P389, United States Air Force Academy, CO 80840-6226. 4: Corresponding author. E-mail:; Source Info: Dec2016, Vol. 76 Issue 4, p417; Subject Term: ANIMAL genome mapping; Subject Term: ANIMALS -- Population biology -- Climatic factors; Subject Term: WILDLIFE management; Subject Term: ANIMAL reproduction; Subject Term: MULE deer; Number of Pages: 10p; Document Type: Article L3 - 10.3398/064.076.0404 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121081954&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grach, S. M. AU - Sergeev, E. N. AU - Mishin, E. V. AU - Shindin, A. V. T1 - Dynamic properties of ionospheric plasma turbulence driven by high-power high-frequency radiowaves. JO - Physics-Uspekhi JF - Physics-Uspekhi Y1 - 2016/11/30/ VL - 59 IS - 11 M3 - Article SP - 1 EP - 1 SN - 10637869 AB - A review is given of the current state-of-the-art of experimental studies and the theoretical understanding of nonlinear phenomena that occur in the ionospheric F-layer irradiated by high-power high-frequency ground-based transmitters. The main focus is on the dynamic features of high-frequency turbulence (plasma waves) and low-frequency turbulence (density irregularities of various scales) that have been studied in experiments at the Sura and HAARP heating facilities operated in temporal and frequency regimes specially designed with consideration of the characteristic properties of nonlinear processes in the perturbed ionosphere using modern radio receivers and optical instruments. Experimental results are compared with theoretical turbulence models for a magnetized collisional plasma in a high-frequency electromagnetic field, allowing the identification of the processes responsible for the observed features of artificial ionospheric turbulence. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics-Uspekhi is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSPHERIC plasma KW - PLASMA turbulence KW - SHORTWAVE radio KW - NONLINEAR analysis KW - COLLISIONLESS plasmas KW - ELECTROMAGNETIC fields N1 - Accession Number: 121145643; Grach, S. M. 1 Sergeev, E. N. 2 Mishin, E. V. 3 Shindin, A. V. 1; Affiliation: 1: Faculty of Radiophysics, Lobachevsky State University of Nizhni Novgorod 2: Radiophysical Research Institute, Lobachevsky State University of Nizhni Novgorod 3: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland Air Force Base, New Mexico; Source Info: Nov2016, Vol. 59 Issue 11, p1; Subject Term: IONOSPHERIC plasma; Subject Term: PLASMA turbulence; Subject Term: SHORTWAVE radio; Subject Term: NONLINEAR analysis; Subject Term: COLLISIONLESS plasmas; Subject Term: ELECTROMAGNETIC fields; Number of Pages: 1p; Document Type: Article L3 - 10.3367/UFNe.2016.07.037868 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121145643&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2016-58714-001 AN - 2016-58714-001 AU - Nelson, Justin AU - McKinley, Richard A. AU - Phillips, Chandler AU - McIntire, Lindsey AU - Goodyear, Chuck AU - Kreiner, Aerial AU - Monforton, Lanie T1 - The effects of transcranial direct current stimulation (tDCS) on multitasking throughput capacity. JF - Frontiers in Human Neuroscience JO - Frontiers in Human Neuroscience JA - Front Hum Neurosci Y1 - 2016/11/29/ VL - 10 CY - Switzerland PB - Frontiers Media S.A. SN - 1662-5161 AD - Nelson, Justin N1 - Accession Number: 2016-58714-001. PMID: 27965553 Partial author list: First Author & Affiliation: Nelson, Justin; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Other Publishers: Frontiers Research Foundation. Release Date: 20161222. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Electrical Brain Stimulation; Prefrontal Cortex; Transcranial Magnetic Stimulation. Classification: Electrophysiology (2530). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Multi-Attribute Task Battery. Methodology: Empirical Study; Quantitative Study. ArtID: 589. Issue Publication Date: Nov 29, 2016. Publication History: First Posted Date: Nov 29, 2016; Accepted Date: Nov 4, 2016; First Submitted Date: Aug 4, 2016. Copyright Statement: This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. Nelson, McKinley, Phillips, McIntire, Goodyear, Kreiner and Monforton. 2016. AB - Background: Multitasking has become an integral attribute associated with military operations within the past several decades. As the amount of information that needs to be processed during these high level multitasking environments exceeds the human operators’ capabilities, the information throughput capacity reaches an asymptotic limit. At this point, the human operator can no longer effectively process and respond to the incoming information resulting in a plateau or decline in performance. The objective of the study was to evaluate the efficacy of a non-invasive brain stimulation technique known as transcranial direct current stimulation (tDCS) applied to a scalp location over the left dorsolateral prefrontal cortex (lDLPFC) to improve information processing capabilities during a multitasking environment. Methods: The study consisted of 20 participants from Wright-Patterson Air Force Base (16 male and 4 female) with an average age of 31.1 (SD = 4.5). Participants were randomly assigned into two groups, each consisting of eight males and two females. Group one received 2mA of anodal tDCS and group two received sham tDCS over the lDLPFC on their testing day. Results: The findings indicate that anodal tDCS significantly improves the participants’ information processing capability resulting in improved performance compared to sham tDCS. For example, the multitasking throughput capacity for the sham tDCS group plateaued near 1.0 bits/s at the higher baud input (2.0 bits/s) whereas the anodal tDCS group plateaued near 1.3 bits/s. Conclusion: The findings provided new evidence that tDCS has the ability to augment and enhance multitasking capability in a human operator. Future research should be conducted to determine the longevity of the enhancement of transcranial direct current stimulation on multitasking performance, which has yet to be accomplished. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - dorsolateral prefrontal cortex (DLPFC) KW - multi-attribute task battery (MATB) KW - transcranial direct current stimulation (tDCS) KW - information throughput capacity KW - multitasking KW - 2016 KW - Electrical Brain Stimulation KW - Prefrontal Cortex KW - Transcranial Magnetic Stimulation KW - 2016 U1 - Sponsor: Air Force Research Laboratory (AFRL). Recipients: No recipient indicated U1 - Sponsor: US Air Force Office of Scientific Research, US. Grant: 17RHCOR485_v1. Recipients: No recipient indicated UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-58714-001&site=ehost-live&scope=site UR - justin.nelson.15.ctr@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Zhu, Zhu AU - Li, Xiaoning AU - Gu, Wen AU - Wang, Jianlin AU - Huang, Haoliang AU - Peng, Ranran AU - Zhai, XiaoFang AU - Fu, Zhengping AU - Lu, Yalin T1 - Improving photocatalysis and magnetic recyclability in Bi5Fe0.95Co0.05Ti3O15 via europium doping. JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2016/11/25/ VL - 686 M3 - Article SP - 306 EP - 311 SN - 09258388 AB - Nanomaterials with improved photocatalysis and magnetism may enrich their field implementation in actual situations where both high light activity and good room-temperature (RT) magnetic recyclability are required. Previously, composite structures formed by at least one magnetic component with a photocatalysis part are mainly used to realize magnetically retrievable photocatalysts. In this work, europium doped Bi 5 Fe 0.95 Co 0.05 Ti 3 O 15 , in the format of nanoflowers, exhibiting a significant ferromagnetism at the room temperature and the notable UV- and visible-light-driven degradation capability, were synthesized by the hydrothermal method. Both ferromagnetism and photocatalysis properties of the resulting Bi 5− x Eu x Fe 0.95 Co 0.05 Ti 3 O 15 were greatly improved by optimizing the doped europium content. Recyclability of such nanoflower photocatalysts in water solutions was demonstrated by simply applying a magnetic field at the RT environment, while a complete photocatalytic decompose of RhB dye was verified by the Fourier transform infrared spectra. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOCATALYSIS KW - EUROPIUM KW - CATALYTIC doping KW - NANOSTRUCTURED materials KW - FERROMAGNETISM KW - HYDROTHERMAL deposits KW - Ferromagnetism KW - Photocatalyst KW - Recyclability KW - Visible-light N1 - Accession Number: 117733924; Zhu, Zhu 1; Email Address: zhuzhu99@mail.ustc.edu.cn Li, Xiaoning 1; Email Address: lixn@mail.ustc.edu.cn Gu, Wen 1; Email Address: guwen@mail.ustc.edu.cn Wang, Jianlin 2,3; Email Address: wangjl@ustc.edu.cn Huang, Haoliang 1,2; Email Address: hhliang@ustc.edu.cn Peng, Ranran 1,2; Email Address: pengrr@ustc.edu.cn Zhai, XiaoFang 2,4; Email Address: xfzhai@ustc.edu.cn Fu, Zhengping 1,2; Email Address: fuzp@ustc.edu.cn Lu, Yalin 1,2,3,4,5,6; Email Address: yllu@ustc.edu.cn; Affiliation: 1: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, PR China 2: Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei 230026, PR China 3: National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, PR China 4: Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, PR China 5: Hefei Physical Sciences and Technology Center, CAS Hefei Institutes of Physical Sciences, Hefei 230031, Anhui, PR China 6: Laser Optics Research Center, US Air Force Academy, CO 80840, USA; Source Info: Nov2016, Vol. 686, p306; Subject Term: PHOTOCATALYSIS; Subject Term: EUROPIUM; Subject Term: CATALYTIC doping; Subject Term: NANOSTRUCTURED materials; Subject Term: FERROMAGNETISM; Subject Term: HYDROTHERMAL deposits; Author-Supplied Keyword: Ferromagnetism; Author-Supplied Keyword: Photocatalyst; Author-Supplied Keyword: Recyclability; Author-Supplied Keyword: Visible-light; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jallcom.2016.06.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117733924&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chabak, Kelson D. AU - Moser, Neil AU - Green, Andrew J. AU - Walker Jr., Dennis E. AU - Tetlak, Stephen E. AU - Heller, Eric AU - Crespo, Antonio AU - Fitch, Robert AU - McCandless, Jonathan P. AU - Leedy, Kevin AU - Baldini, Michele AU - Wagner, Gunter AU - Galazka, Zbigniew AU - Xiuling Li AU - Jessen, Gregg T1 - Enhancement-mode Ga2O3 wrap-gate fin field-effect transistors on native (100) β'-Ga2O3 substrate with high breakdown voltage. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2016/11/21/ VL - 109 IS - 21 M3 - Article SP - 1 EP - 5 SN - 00036951 AB - Sn-doped gallium oxide (Ga2O3) wrap-gate fin-array field-effect transistors (finFETs) were formed by top-down BCl3 plasma etching on a native semi-insulating Mg-doped (100) β-Ga2O3 substrate. The fin channels have a triangular cross-section and are approximately 300 nm wide and 200 nm tall. FinFETs, with 20 nm Al2O3 gate dielectric and ~2 µm wrap-gate, demonstrate normally-off operation with a threshold voltage between 0 and +1 V during high-voltage operation. The ION IOFF ratio is greater than 105 and is mainly limited by high on-resistance that can be significantly improved. At VG = 0, a finFET with 21 lm gate-drain spacing achieved a three-terminal breakdown voltage exceeding 600V without a field-plate. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM compounds KW - FIELD-effect transistors KW - ELECTRIC potential KW - ALUMINUM compounds KW - DIELECTRICS N1 - Accession Number: 119712963; Chabak, Kelson D. 1,2 Moser, Neil 3 Green, Andrew J. 4 Walker Jr., Dennis E. 1 Tetlak, Stephen E. 1 Heller, Eric 5 Crespo, Antonio 1 Fitch, Robert 1 McCandless, Jonathan P. Leedy, Kevin 1 Baldini, Michele 6 Wagner, Gunter 6 Galazka, Zbigniew 6 Xiuling Li 2 Jessen, Gregg 1; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Ohio 45433, USA 2: Department of Electrical and Computer Engineering, Micro and Nanotechnology Laboratory, University of Illinois-Urbana-Champaign, Urbana, Illinois 61801, USA 3: Department of Electrical and Computer Engineering, George Mason University, Fairfax, Virginia 22030, USA 4: Wyle Laboratories, Inc., 4200 Colonel Glenn Hwy, Beavercreek, Ohio 45431, USA 5: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433, USA 6: Leibniz-Institut für Kristallzüchtung, Max-Born-Str. 2, D-12489 Berlin, Germany; Source Info: 11/21/2016, Vol. 109 Issue 21, p1; Subject Term: GALLIUM compounds; Subject Term: FIELD-effect transistors; Subject Term: ELECTRIC potential; Subject Term: ALUMINUM compounds; Subject Term: DIELECTRICS; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 5p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.4967931 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119712963&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kaspi, R. AU - Luong, S. AU - Yang, C. AU - Lu, C. AU - Newell, T. C. AU - Bate, T. T1 - Extracting fundamental transverse mode operation in broad area quantum cascade lasers. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2016/11/21/ VL - 109 IS - 21 M3 - Article SP - 1 EP - 4 SN - 00036951 AB - Power scaling in broad area quantum cascade lasers results in the operation of high order transverse modes with a far-field profile consisting of two lobes propagating at large angles relative to the optical axis. We report a method of suppressing the high order transverse modes that can extract the fundamental mode and provide emission along the optical axis. By generating a lateral constriction in the waveguide in the form of short trenches defined by the focused ion beam milling technique, we report broad area devices in which most of the power is contained in a near diffraction-limited beam that provides high brightness. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POWER electronics KW - QUANTUM cascade lasers KW - WAVEGUIDES KW - ION beams KW - SHEAR waves N1 - Accession Number: 119712939; Kaspi, R. 1; Email Address: ron.kaspi@us.af.mil Luong, S. 1 Yang, C. 1 Lu, C. 1 Newell, T. C. 1 Bate, T. 1; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Laser Division AFRL/RDLTD, 3550 Aberdeen Ave., Albuquerque, New Mexico 87111, USA; Source Info: 11/21/2016, Vol. 109 Issue 21, p1; Subject Term: POWER electronics; Subject Term: QUANTUM cascade lasers; Subject Term: WAVEGUIDES; Subject Term: ION beams; Subject Term: SHEAR waves; Number of Pages: 4p; Illustrations: 1 Black and White Photograph, 3 Graphs; Document Type: Article L3 - 10.1063/1.4968800 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119712939&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Peng, R. AU - Sonner, Z. AU - Hauke, A. AU - Wilder, E. AU - Kasting, J. AU - Gaillard, T. AU - Swaille, D. AU - Sherman, F. AU - Mao, X. AU - Hagen, J. AU - Murdock, R. AU - Heikenfeld, J. T1 - A new oil/membrane approach for integrated sweat sampling and sensing: sample volumes reduced from μL's to nL's and reduction of analyte contamination from skin. JO - Lab on a Chip - Miniaturisation for Chemistry & Biology JF - Lab on a Chip - Miniaturisation for Chemistry & Biology Y1 - 2016/11/21/ VL - 10 IS - 22 M3 - Article SP - 4415 EP - 4423 SN - 14730197 AB - Wearable sweat biosensensing technology has dominantly relied on techniques which place planar-sensors or fluid-capture materials directly onto the skin surface. This ‘on-skin’ approach can result in sample volumes in the μL regime, due to the roughness of skin and/or due to the presence of hair. Not only does this increase the required sampling time to 10's of minutes or more, but it also increases the time that sweat spends on skin and therefore increases the amount of analyte contamination coming from the skin surface. Reported here is a first demonstration of a new paradigm in sweat sampling and sensing, where sample volumes are reduced from the μL's to nL's regime, and where analyte contamination from skin is reduced or even eliminated. A micro-porous membrane is constructed such that it is porous to sweat only. To complete a working device, first placed onto skin is a cosmetic-grade oil, secondly this membrane, and thirdly the sensors. As a result, spreading of sweat is isolated to only regions above the sweat glands before it reaches the sensors. Best case sampling intervals are on the order of several minutes, and the majority of hydrophilic (low oil solubility) contaminants from the skin surface are blocked. In vitro validation of this new approach is performed with an improved artificial skin including human hair. In vivo tests show strikingly consistent results, and reveal that the oil/membrane is robust enough to even allow horizontal sliding of a sensor. [ABSTRACT FROM AUTHOR] AB - Copyright of Lab on a Chip - Miniaturisation for Chemistry & Biology is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERSPIRATION KW - SAMPLING (Process) KW - WEARABLE technology KW - BIOSENSORS KW - POLYVINYL alcohol N1 - Accession Number: 119191336; Peng, R. 1,2 Sonner, Z. 2 Hauke, A. 2 Wilder, E. 3 Kasting, J. 3 Gaillard, T. 4 Swaille, D. 5 Sherman, F. 5 Mao, X. 5 Hagen, J. 6 Murdock, R. 6 Heikenfeld, J. 2; Affiliation: 1: School of Optical-Elect. and Comp. Engin., Univ. of Shanghai for Sci. and Tech, PR China 2: Novel Devices Lab, Dept. of Electrical Engin. and Computing Sys., Univ. Cincinnati., USA 3: Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH, 45267, USA 4: College of Nursing, University of Cincinnati, Cincinnati, OH, 45267, USA 5: P&G Corp. Technical and Research Centers, Cincinnati, OH, USA 6: Air Force Research Laboratory, 711th Human Performance Wing, Wright Patterson AFB, OH 45433, USA; Source Info: 11/21/2016, Vol. 10 Issue 22, p4415; Subject Term: PERSPIRATION; Subject Term: SAMPLING (Process); Subject Term: WEARABLE technology; Subject Term: BIOSENSORS; Subject Term: POLYVINYL alcohol; Number of Pages: 9p; Document Type: Article L3 - 10.1039/c6lc01013j UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119191336&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mendoza, Blanca AU - Shea, M.A. T1 - Space, geophysical research related to Latin America – Part 2. JO - Advances in Space Research JF - Advances in Space Research Y1 - 2016/11/15/ VL - 58 IS - 10 M3 - Article SP - 1915 EP - 1915 SN - 02731177 KW - SPACE research KW - MAGNETOSPHERE N1 - Accession Number: 119002797; Mendoza, Blanca 1,2,3; Email Address: blanca@geofisica.unam.mx Shea, M.A. 1,2,3; Email Address: sssrc@msn.com; Affiliation: 1: Instituto de Geofísica, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, 04510 México D.F., Mexico 2: Air Force Research Laboratory, Bedford, MA, USA 3: SSSRC, Nashua, NH, USA; Source Info: Nov2016, Vol. 58 Issue 10, p1915; Subject Term: SPACE research; Subject Term: MAGNETOSPHERE; Number of Pages: 1p; Document Type: Article L3 - 10.1016/j.asr.2016.09.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119002797&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Araki, Samuel J. T1 - Fast Computation of High Energy Elastic Collision Scattering Angle for Electric Propulsion Plume Simulation. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/11/15/ VL - 1786 IS - 1 M3 - Article SP - 1 EP - 8 SN - 0094243X AB - In the plumes of Hall thrusters and ion thrusters, high energy ions experience elastic collisions with slow neutral atoms. These collisions involve a process of momentum exchange, altering the initial velocity vectors of the collision pair. In addition to the momentum exchange process, ions and atoms can exchange electrons, resulting in slow charge-exchange ions and fast atoms. In these simulations, it is particularly important to accurately perform computations of ion-atom elastic collisions in determining the plume current profile and assessing the integration of spacecraft components. The existing models are currently capable of accurate calculation but are not fast enough such that the calculation can be a bottleneck of plume simulations. This study investigates methods to accelerate an ion-atom elastic collision calculation that includes both momentum- and charge-exchange processes. The scattering angles are pre-computed through a classical approach with ab initio spin-orbit free potential and are stored in a two-dimensional array as functions of impact parameter and energy. When performing a collision calculation for an ion-atom pair, the scattering angle is computed by a table lookup and multiple linear interpolations, given the relative energy and randomly determined impact parameter. In order to further accelerate the calculations, the number of collision calculations is reduced by properly defining two cut-off cross-sections for the elastic scattering. In the MCC method, the target atom needs to be sampled; however, it is confirmed that initial target atom velocity does not play a significant role in typical electric propulsion plume simulations such that the sampling process is unnecessary. With these implementations, the computational runtime to perform a collision calculation is reduced significantly compared to previous methods, while retaining the accuracy of the high fidelity models. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELASTIC scattering KW - ELECTRIC propulsion KW - PLUMES (Fluid dynamics) KW - COLLISIONS (Physics) KW - COLLOID thrusters KW - ELECTRONS N1 - Accession Number: 119558107; Araki, Samuel J. 1; Affiliation: 1: ERC Inc., In-Space Propulsion Branch, Air Force Research Laboratory, Edwards Air Force Base, CA 93524, USA; Source Info: 2016, Vol. 1786 Issue 1, p1; Subject Term: ELASTIC scattering; Subject Term: ELECTRIC propulsion; Subject Term: PLUMES (Fluid dynamics); Subject Term: COLLISIONS (Physics); Subject Term: COLLOID thrusters; Subject Term: ELECTRONS; Number of Pages: 8p; Illustrations: 2 Diagrams, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.4967668 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119558107&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Burt, Jonathan M. AU - Josyula, Eswar T1 - A Green-Kubo Approach to Reduce Collision Separation Error in the Direct Simulation Monte Carlo Method. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/11/15/ VL - 1786 IS - 1 M3 - Article SP - 1 EP - 8 SN - 0094243X AB - A modification to DSMC collision routines is proposed to eliminate or reduce collision separation error in numerical transport coefficients. This modification follows from earlier DSMC error analysis based on Green-Kubo theory, and is currently limited to the case of a hard sphere monatomic simple gas simulation with approximately isotropic collision separation statistics. Further adjustments to the DSMC collision algorithm are proposed to reduce collision separation error associated with a finite time step interval. It is shown analytically that, for random collision partner selection at the small time step limit with a cell size equal to the mean free path, collision separation error in viscosity is reduced by approximately 37% while thermal conductivity error is completely removed. In a demonstration case involving hypersonic flow over a cylinder, the proposed modification is found to allow for large error reductions in both the total force and heat transfer rate. Although this modification is not intended as a general solution to the problem of DSMC collision separation error, it is hoped that the concept demonstrated here of utilizing Green-Kubo analysis for DSMC error reduction will in the future find more widespread applicability. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLISIONS (Physics) KW - THERMAL conductivity KW - SEPARATION (Technology) KW - SIMULATION methods & models KW - GAS flow N1 - Accession Number: 119558047; Burt, Jonathan M. 1 Josyula, Eswar 1; Affiliation: 1: U.S. Air Force Research Laboratory Wright-Patterson Air Force Base, OH 45433, United States; Source Info: 2016, Vol. 1786 Issue 1, p1; Subject Term: COLLISIONS (Physics); Subject Term: THERMAL conductivity; Subject Term: SEPARATION (Technology); Subject Term: SIMULATION methods & models; Subject Term: GAS flow; Number of Pages: 8p; Illustrations: 1 Chart, 6 Graphs; Document Type: Article L3 - 10.1063/1.4967608 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119558047&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liechty, Derek S. AU - Burt, Jonathan M. T1 - Extension of the Viscous Collision Limiting Direct Simulation Monte Carlo Technique to Multiple Species. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/11/15/ VL - 1786 IS - 1 M3 - Article SP - 1 EP - 8 SN - 0094243X AB - There are many flows fields that span a wide range of length scales where regions of both rarefied and continuum flow exist and neither direct simulation Monte Carlo (DSMC) nor computational fluid dynamics (CFD) provide the appropriate solution everywhere. Recently, a new viscous collision limited (VCL) DSMC technique was proposed to incorporate effects of physical diffusion into collision limiter calculations to make the low Knudsen number regime normally limited to CFD more tractable for an all-particle technique. This original work had been derived for a single-species gas. The current work extends the VCL-DSMC technique to gases with multiple species. Similar derivations were performed to equate numerical and physical transport coefficients. However, a more rigorous treatment of determining the mixture viscosity is applied. In the original work, consideration was given to internal energy nonequilibrium, and this is also extended in the current work to chemical non-equilibrium. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VISCOUS flow KW - IMPACT (Mechanics) KW - COMPUTATIONAL fluid dynamics KW - DIFFUSION KW - KNUDSEN flow KW - GAS flow N1 - Accession Number: 119557997; Liechty, Derek S. 1; Email Address: Derek.S.Liechty@nasa.gov Burt, Jonathan M. 2; Email Address: Jonathan.M.Burt@nasa.gov; Affiliation: 1: NASA Langley Research Center, Aerothermodynamics Branch, MS 408A, Hampton, VA 23681 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433; Source Info: 2016, Vol. 1786 Issue 1, p1; Subject Term: VISCOUS flow; Subject Term: IMPACT (Mechanics); Subject Term: COMPUTATIONAL fluid dynamics; Subject Term: DIFFUSION; Subject Term: KNUDSEN flow; Subject Term: GAS flow; Number of Pages: 8p; Illustrations: 8 Graphs; Document Type: Article L3 - 10.1063/1.4967558 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119557997&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maldonado, C. AU - McHarg, G. AU - Asmolova, O. AU - Andersen, G. AU - Rodrigues, S. AU - Ketsdever, A. T1 - Material Exposure Effects in a Simulated Low-Earth Orbit Environment. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/11/15/ VL - 1786 IS - 1 M3 - Article SP - 1 EP - 8 SN - 0094243X AB - Spacecraft operating in low-Earth orbit (LEO) are subjected to a number of hazardous environmental constituents that can lead to decreased system performance and reduced operational lifetimes. Due to their thermal, optical, and mechanical properties, polymers are used extensively in space systems; however they are particularly susceptible to material erosion and degradation as a result of exposure to the LEO environment. The focus of this research is to examine the material erosion and mass loss experienced by the Novastrat 500 polyimide due to exposure in a simulated LEO environment. In addition to the polymer samples, chrome, silver and gold specimens will be examined to measure the oxidation rate and act as a control specimen, respectively. A magnetically filtered atomic oxygen plasma source has previously been developed and characterized for the purpose of simulating the low-Earth orbit environment. The plasma source can be operated at a variety of discharge currents and gas flow rates, of which the plasma parameters downstream of the source are dependent. The characteristics of the generated plasma were examined as a function of these operating parameters to optimize the production of O+ ions with energy relevant to LEO applications, where the ram energy of the ions due to the motion of the satellite relative to the LEO plasma is high (e.g. 7800 m/s, which corresponds to approximately 5 eV of kinetic energy for O+ ions). The plasma downstream of the source consists of streaming ions with energy of approximately 5 eV and an ion species fraction that is approximately 90% O+. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOW earth orbit satellites KW - SPACE vehicles KW - SIMULATION methods & models KW - OXYGEN KW - PLASMA flow KW - LEO environment KW - spacecraft/atmosphere interactions N1 - Accession Number: 119558058; Maldonado, C. 1; Email Address: carlos.maldonado.ctr@usafa.edu McHarg, G. 1 Asmolova, O. 1 Andersen, G. 1 Rodrigues, S. 2 Ketsdever, A. 2; Affiliation: 1: United States Air Force Academy, Colorado Springs, Colorado, 80840, USA 2: University of Colorado at Colorado Springs, Colorado Springs, Colorado, 80918, USA; Source Info: 2016, Vol. 1786 Issue 1, p1; Subject Term: LOW earth orbit satellites; Subject Term: SPACE vehicles; Subject Term: SIMULATION methods & models; Subject Term: OXYGEN; Subject Term: PLASMA flow; Author-Supplied Keyword: LEO environment; Author-Supplied Keyword: spacecraft/atmosphere interactions; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 8p; Illustrations: 3 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1063/1.4967619 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119558058&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, Robert T1 - Conservative Bin-to-Bin Fractional Collisions. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/11/15/ VL - 1786 IS - 1 M3 - Article SP - 1 EP - 8 SN - 0094243X AB - Particle methods such as direct simulation Monte Carlo (DSMC) and particle-in-cell (PIC) are commonly used to model rarefied kinetic flows for engineering applications because of their ability to efficiently capture non-equilibrium behavior. The primary drawback to these methods relates to the poor convergence properties due to the stochastic nature of the methods which typically rely heavily on high degrees of non-equilibrium and time averaging to compensate for poor signal to noise ratios. For standard implementations, each computational particle represents many physical particles which further exacerbate statistical noise problems for flow with large species density variation such as encountered in flow expansions and chemical reactions. The stochastic weighted particle method (SWPM) introduced by Rjasanow andWagner overcome this difficulty by allowing the ratio of real to computational particles to vary on a per particle basis throughout the flow. The DSMC procedure must also be slightly modified to properly sample the Boltzmann collision integral accounting for the variable particle weights and to avoid the creation of additional particles with negative weight. In this work, the SWPM with necessary modification to incorporate the variable hard sphere (VHS) collision cross section model commonly used in engineering applications is first incorporated into an existing engineering code, the Thermophysics Universal Research Framework. The results and computational efficiency are compared to a few simple test cases using a standard validated implementation of the DSMC method along with the adapted SWPM/VHS collision using an octree based conservative phase space reconstruction. The SWPM method is then further extended to combine the collision and phase space reconstruction into a single step which avoids the need to create additional computational particles only to destroy them again during the particle merge. This is particularly helpful when oversampling the collision integral when compared to the standard DSMC method. However, it is found that the more frequent phase space reconstructions can cause added numerical thermalization with low particle per cell counts due to the coarseness of the octree used. However, the methods are expected to be of much greater utility in transient expansion flows and chemical reactions in the future. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - KINETIC theory of gases KW - FRACTIONAL calculus KW - NONEQUILIBRIUM flow KW - COLLISIONS (Physics) KW - COLLISION integrals N1 - Accession Number: 119558048; Martin, Robert 1; Email Address: robert.martin.101@us.af.mil; Affiliation: 1: ERC Inc., In-Space Propulsion Branch, Air Force Research Laboratory, Edwards AFB, CA 93524 USA; Source Info: 2016, Vol. 1786 Issue 1, p1; Subject Term: KINETIC theory of gases; Subject Term: FRACTIONAL calculus; Subject Term: NONEQUILIBRIUM flow; Subject Term: COLLISIONS (Physics); Subject Term: COLLISION integrals; Number of Pages: 8p; Illustrations: 2 Color Photographs, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.4967609 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119558048&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yun, Yu AU - Huang, Haoliang AU - Meng, Dechao AU - Cui, Zhangzhang AU - Wang, Jianlin AU - Fu, Zhengping AU - Peng, Ranran AU - Zhai, Xiaofang AU - Lu, Yalin T1 - Reduced growth temperature of Bi6FeCoTi3O18 thin films by conductive bottom layers. JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2016/11/15/ VL - 454 M3 - Article SP - 25 EP - 29 SN - 00220248 AB - The Aurivillius layered oxide homologous series attract wide interests due to their room temperature multiferroic properties. Unfortunately, the synthesis of such layered oxide epitaxial thin films has been a major challenge owing to the occurrence of growth defects and narrow growth temperature window. To obtain high quality epitaxial Bi 6 FeCoTi 3 O 18 (BFCTO) thin films, the effects of insulating and conductive bottom layers were studied by laser molecular beam epitaxy. We found that the optimal deposition temperature for growth on conductive bottom layers is more than 90 °C lower than that on insulating bottom layers, which indicates the interface between BFCTO and conductive bottom layers has smaller interfacial energy than the interface between BFCTO and insulating bottom layers. The magnetic and ferroelectric properties of the optimized BFCTO thin films on insulating substrate and conductive bottom layers were studied. This study is important to control the growth of complex layered oxide thin films and exploit the applications for future room temperature multiferroic devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BISMUTH compounds KW - TEMPERATURE effect KW - THIN films KW - OXIDES KW - SYNTHESIS (Chemistry) KW - A1. High resolution x-ray diffraction KW - A1. Substrates KW - A3. Laser epitaxy KW - B1. Oxide N1 - Accession Number: 119157896; Yun, Yu 1 Huang, Haoliang 1,2; Email Address: hhliang@ustc.edu.cn Meng, Dechao 1 Cui, Zhangzhang 1 Wang, Jianlin 2,3 Fu, Zhengping 1,2 Peng, Ranran 1,2 Zhai, Xiaofang 1,2 Lu, Yalin 1,2,3,4; Email Address: yllu@ustc.edu.cn; Affiliation: 1: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering & Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, Anhui, China 2: Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei 230026, Anhui, China 3: National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, Anhui, China 4: Laser Optics Research Center, Department of Physics, United States Air Force Academy, CO 80840, USA; Source Info: Nov2016, Vol. 454, p25; Subject Term: BISMUTH compounds; Subject Term: TEMPERATURE effect; Subject Term: THIN films; Subject Term: OXIDES; Subject Term: SYNTHESIS (Chemistry); Author-Supplied Keyword: A1. High resolution x-ray diffraction; Author-Supplied Keyword: A1. Substrates; Author-Supplied Keyword: A3. Laser epitaxy; Author-Supplied Keyword: B1. Oxide; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jcrysgro.2016.08.053 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119157896&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rottmayer, Michael AU - Singh, Raj AU - Huang, Hong T1 - The influence of microstructure and functional-grading on the electrochemical response of Pt/Yttria-stabilized zirconia nanocomposite thin films in micro-solid oxide fuel cells. JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2016/11/15/ VL - 332 M3 - Article SP - 139 EP - 148 SN - 03787753 AB - The use of microfabricated solid oxide fuel cells (mSOFCs) is a promising technology for a low temperature operation (as low as 300 °C) with reduced start-up time and improved energy density. However, one of the limitations to widespread adoption of this technology has been due to the use of Pt electrodes, which exhibit poor bulk ionic conductivity and suffers from Ostwald ripening. Pt/YSZ is a promising alternative for providing both microstructural and electrochemical stability to the electrode layer. The objective of this research is to investigate the electrochemical performance and long term morphological stability of Pt/YSZ, by tailoring the composition, porosity, thickness, and functional-graded distribution, for use as a high performance mSOFC cathode. The Pt/YSZ cathodes were deposited through a co-sputtering process. An increase in the oxygen reduction reaction (ORR) charge transfer kinetics are observed with the Pt/YSZ cathode versus pure Pt, along with a significantly more stable morphology over a 24hr period. Although the mSOFC performance is found to be sensitive to Pt/YSZ composition at the TPB interface, the mass diffusion of oxygen through the cathode is determined to be the rate limiting step. The increased porosity in the Pt/YSZ led to more efficient oxygen diffusion and higher mSOFC performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - YTTRIA stabilized zirconium oxide KW - THIN films KW - SOLID oxide fuel cells KW - ELECTROCHEMICAL analysis KW - NANOCOMPOSITE materials KW - ENERGY density KW - Functional grading KW - Micro fuel cell KW - Microstructure KW - Pt/YSZ KW - SOFC KW - Thin film N1 - Accession Number: 118739141; Rottmayer, Michael 1; Email Address: Michael.rottmayer@us.af.mil Singh, Raj 2; Email Address: rajns@okstate.edu Huang, Hong 3; Email Address: hong.huang@wright.edu; Affiliation: 1: US Air Force Research Laboratory, Aerospace System Directorate, Power and Control Division, Electrical Systems Branch, WPAFB, OH 45433, USA 2: School of Materials Science and Engineering, Oklahoma State University, Tulsa, OK 74137, USA 3: Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45435, USA; Source Info: Nov2016, Vol. 332, p139; Subject Term: YTTRIA stabilized zirconium oxide; Subject Term: THIN films; Subject Term: SOLID oxide fuel cells; Subject Term: ELECTROCHEMICAL analysis; Subject Term: NANOCOMPOSITE materials; Subject Term: ENERGY density; Author-Supplied Keyword: Functional grading; Author-Supplied Keyword: Micro fuel cell; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Pt/YSZ; Author-Supplied Keyword: SOFC; Author-Supplied Keyword: Thin film; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.jpowsour.2016.09.052 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118739141&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mitchel, W. C. AU - Elhamri, Said AU - Haugan, H. J. AU - Brown, Gail J. AU - Shin Mou AU - Szmulowicz, Frank T1 - Multicarrier transport in InGaSb/InAs superlattice structures. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2016/11/07/ VL - 120 IS - 17 M3 - Article SP - 1 EP - 5 SN - 00218979 AB - The electrical properties of In0.25Ga0.75Sb/InAs superlattices designed for use as very long wavelength infrared detectors were studied with magnetic field dependent transport measurements and multicarrier analysis. Two electron channels and one hole channel were identified. The low concentration, high mobility electron channel was identified with conduction within the superlattice. Residual electron concentrations in the superlattice are found to be in the high 1010 cm-2 range with mobilities on the order of 40 000 cm²/V s. The other electron and hole channels have significantly lower mobilities with concentrations in the 1011 cm-2 range and can have a significant impact on the resistivity, carrier concentration, and mobility as measured at a single magnetic field value in conventional transport measurements. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDIUM arsenide -- Crystallography KW - CRYSTAL lattices KW - WAVELENGTHS KW - INFRARED radiation KW - ELECTRIC conductivity N1 - Accession Number: 119351513; Mitchel, W. C. 1 Elhamri, Said 2 Haugan, H. J. 1 Brown, Gail J. 1 Shin Mou 1 Szmulowicz, Frank 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Department of Physics, University of Dayton, Dayton, Ohio 45469, USA; Source Info: 2016, Vol. 120 Issue 17, p1; Subject Term: INDIUM arsenide -- Crystallography; Subject Term: CRYSTAL lattices; Subject Term: WAVELENGTHS; Subject Term: INFRARED radiation; Subject Term: ELECTRIC conductivity; Number of Pages: 5p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.4966136 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119351513&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Taylor, Brian K. T1 - Validating a model for detecting magnetic field intensity using dynamic neural fields. JO - Journal of Theoretical Biology JF - Journal of Theoretical Biology Y1 - 2016/11/07/ VL - 408 M3 - Article SP - 53 EP - 65 SN - 00225193 AB - Several animals use properties of Earth's magnetic field as a part of their navigation toolkit to accomplish tasks ranging from local homing to continental migration. Studying these behaviors has led to the postulation of both a magnetite-based sense, and a chemically based radical-pair mechanism. Several researchers have proposed models aimed at both understanding these mechanisms, and offering insights into future physiological experiments. The present work mathematically implements a previously developed conceptual model for sensing and processing magnetite-based magnetosensory feedback by using dynamic neural fields, a computational neuroscience tool for modeling nervous system dynamics and processing. Results demonstrate the plausibility of the conceptual model's predictions. Specifically, a population of magnetoreceptors in which each individual can only sense directional information can encode magnetic intensity en masse. Multiple populations can encode both magnetic direction, and intensity, two parameters that several animals use in their navigational toolkits. This work can be expanded to test other magnetoreceptor models. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Theoretical Biology is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC flux density KW - MAGNETIC fields KW - EMIGRATION & immigration KW - MAGNETITE KW - CONCEPTUAL models KW - MAGNETORECEPTORS KW - Alternative navigation KW - Dynamic neural field KW - Magnetic reception KW - Magnetoreception KW - Magnetosensing KW - Navigation N1 - Accession Number: 118268439; Taylor, Brian K. 1; Affiliation: 1: Air Force Research Laboratory – Munitions Directorate, 101 West Eglin Blvd, Ste. 209, Bldg 13 Eglin AFB, FL 32542, USA; Source Info: Nov2016, Vol. 408, p53; Subject Term: MAGNETIC flux density; Subject Term: MAGNETIC fields; Subject Term: EMIGRATION & immigration; Subject Term: MAGNETITE; Subject Term: CONCEPTUAL models; Subject Term: MAGNETORECEPTORS; Author-Supplied Keyword: Alternative navigation; Author-Supplied Keyword: Dynamic neural field; Author-Supplied Keyword: Magnetic reception; Author-Supplied Keyword: Magnetoreception; Author-Supplied Keyword: Magnetosensing; Author-Supplied Keyword: Navigation; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.jtbi.2016.08.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118268439&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heflin, Patrick AU - Levy, David AU - Lane, Chase AU - Prosper, Paul T1 - Lessons Learned from Applying Appreciative Inquiry in a Military Setting. JO - AI Practitioner JF - AI Practitioner Y1 - 2016/11// VL - 18 IS - 4 M3 - Article SP - 66 EP - 76 SN - 17418224 AB - The article discusses observations and lessons from the application of appreciative inquiry in military organizations. Topics covered include world-class socialization and enculturation, the conflict between empowerment and autocracy, the influence of organizational structure on behavior and the concept of problem culture. KW - APPRECIATIVE inquiry KW - ORGANIZATIONAL behavior KW - ORGANIZATIONAL structure KW - APPLIED psychology KW - MILITARY psychology KW - SOCIALIZATION N1 - Accession Number: 119104298; Heflin, Patrick 1; Email Address: Patrick.Heflin@usafa.edu; Levy, David 2; Email Address: david.levy@usafa.edu; Lane, Chase 3; Email Address: david.levy@usafa.edu; Prosper, Paul 1; Email Address: paul.prosper@usafa.edu; Affiliations: 1: Assistant professor of Management at the US Air Force Academy; 2: Professor of Management at the US Air Force Academy; 3: Instructor of Management at the United States Air Force Academy; Issue Info: Nov2016, Vol. 18 Issue 4, p66; Thesaurus Term: APPRECIATIVE inquiry; Thesaurus Term: ORGANIZATIONAL behavior; Thesaurus Term: ORGANIZATIONAL structure; Subject Term: APPLIED psychology; Subject Term: MILITARY psychology; Subject Term: SOCIALIZATION; Number of Pages: 11p; Document Type: Article L3 - 10.12781/978-1-907549-29-8-12 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=119104298&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Cantu, Jody C. AU - Tarango, Melissa AU - Beier, Hope T. AU - Ibey, Bennett L. T1 - The biological response of cells to nanosecond pulsed electric fields is dependent on plasma membrane cholesterol. JO - BBA - Biomembranes JF - BBA - Biomembranes Y1 - 2016/11// VL - 1858 IS - 11 M3 - Article SP - 2636 EP - 2646 SN - 00052736 AB - Previous work from our laboratory demonstrated nanopore formation in cell membranes following exposure to nanosecond pulsed electric fields (nsPEF). We observed differences in sensitivity to nsPEF in both acute membrane injury and 24 h lethality across multiple cells lines. Based on these data, we hypothesize that the biological response of cells to nsPEF is dependent on the physical properties of the plasma membrane (PM), including regional cholesterol content. Results presented in this paper show that depletion of membrane cholesterol disrupts the PM and increases the permeability of cells to small molecules, including propidium iodide and calcium occurring after fewer nsPEF. Additionally, cholesterol depletion concurrently decreases the “dose” of nsPEF required to induce lethality. In summary, the results of the current study suggest that the PM cholesterol composition is an important determinant in the cellular response to nsPEF. [ABSTRACT FROM AUTHOR] AB - Copyright of BBA - Biomembranes is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CELL membranes KW - CHOLESTEROL KW - NANOPORES KW - ELECTRIC field effects KW - PROPIDIUM iodide KW - SMALL molecules KW - STIMULUS & response (Biology) KW - Cholesterol KW - Lipid rafts KW - Nanoporation KW - Nanosecond pulsed electric fields KW - Plasma membrane N1 - Accession Number: 118357758; Cantu, Jody C. 1; Email Address: jody.cantu.ctr@us.af.mil Tarango, Melissa 1 Beier, Hope T. 2 Ibey, Bennett L. 3; Affiliation: 1: General Dynamics Information Technology, JBSA Fort Sam Houston, TX 78234, USA 2: Air Force Research Laboratory, 711th Human Performance Wing, Optical Radiation Branch, JBSA Fort Sam Houston, TX 78234, USA 3: Air Force Research Laboratory, 711th Human Performance Wing, Radio Frequency Radiation Branch, JBSA Fort Sam Houston, TX 78234, USA; Source Info: Nov2016, Vol. 1858 Issue 11, p2636; Subject Term: CELL membranes; Subject Term: CHOLESTEROL; Subject Term: NANOPORES; Subject Term: ELECTRIC field effects; Subject Term: PROPIDIUM iodide; Subject Term: SMALL molecules; Subject Term: STIMULUS & response (Biology); Author-Supplied Keyword: Cholesterol; Author-Supplied Keyword: Lipid rafts; Author-Supplied Keyword: Nanoporation; Author-Supplied Keyword: Nanosecond pulsed electric fields; Author-Supplied Keyword: Plasma membrane; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.bbamem.2016.07.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118357758&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Moen, Erick K. AU - Ibey, Bennett L. AU - Beier, Hope T. AU - Armani, Andrea M. T1 - Quantifying pulsed electric field-induced membrane nanoporation in single cells. JO - BBA - Biomembranes JF - BBA - Biomembranes Y1 - 2016/11// VL - 1858 IS - 11 M3 - Article SP - 2795 EP - 2803 SN - 00052736 AB - Plasma membrane disruption can trigger a host of cellular activities. One commonly observed type of disruption is pore formation. Molecular dynamic (MD) simulations of simplified lipid membrane structures predict that controllably disrupting the membrane via nano-scale poration may be possible with nanosecond pulsed electric fields (nsPEF). Until recently, researchers hoping to verify this hypothesis experimentally have been limited to measuring the relatively slow process of fluorescent markers diffusing across the membrane, which is indirect evidence of nanoporation that could be channel-mediated. Leveraging recent advances in nonlinear optical microscopy, we elucidate the role of pulse parameters in nsPEF-induced membrane permeabilization in live cells. Unlike previous techniques, it is able to directly observe loss of membrane order at the onset of the pulse. We also develop a complementary theoretical model that relates increasing membrane permeabilization to membrane pore density. Due to the significantly improved spatial and temporal resolution possible with our imaging method, we are able to directly compare our experimental and theoretical results. Their agreement provides substantial evidence that nanoporation does occur and that its development is dictated by the electric field distribution. [ABSTRACT FROM AUTHOR] AB - Copyright of BBA - Biomembranes is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIPID membranes KW - CELL membranes KW - NANOPORES KW - ELECTRIC field effects KW - MICROSCOPY KW - MOLECULAR dynamics -- Simulation methods KW - Asymptotic electroporation model KW - Cell circuit model KW - Di-4 Di-4-ANEPPDHQ KW - Electroporation KW - Jurkat Jurkat clone E6-1 human T-lymphocytes KW - Lipid bilayer KW - Nanoporation KW - Nanosecond pulsed electric fields (nsPEF) KW - nsPEF nanosecond pulsed electric field KW - RC resistor-capacitor KW - SE Smoluchowski equation KW - SHG second harmonic generation KW - SNR signal-to-noise N1 - Accession Number: 118357753; Moen, Erick K. 1; Email Address: moen.erick@gmail.com Ibey, Bennett L. 2 Beier, Hope T. 2 Armani, Andrea M. 1; Affiliation: 1: Ming Hsieh Department of Electrical Engineering - Electrophysics, University of Southern California, 920 Bloom Walk, SSC, 502 Los Angeles, CA, USA 2: Bioeffects Division, 711 Human Performance Wing, Air Force Research Laboratory, 4141 Petroleum Rd., JBSA Fort Sam, Houston, TX 78234, USA; Source Info: Nov2016, Vol. 1858 Issue 11, p2795; Subject Term: LIPID membranes; Subject Term: CELL membranes; Subject Term: NANOPORES; Subject Term: ELECTRIC field effects; Subject Term: MICROSCOPY; Subject Term: MOLECULAR dynamics -- Simulation methods; Author-Supplied Keyword: Asymptotic electroporation model; Author-Supplied Keyword: Cell circuit model; Author-Supplied Keyword: Di-4 Di-4-ANEPPDHQ; Author-Supplied Keyword: Electroporation; Author-Supplied Keyword: Jurkat Jurkat clone E6-1 human T-lymphocytes; Author-Supplied Keyword: Lipid bilayer; Author-Supplied Keyword: Nanoporation; Author-Supplied Keyword: Nanosecond pulsed electric fields (nsPEF); Author-Supplied Keyword: nsPEF nanosecond pulsed electric field; Author-Supplied Keyword: RC resistor-capacitor; Author-Supplied Keyword: SE Smoluchowski equation; Author-Supplied Keyword: SHG second harmonic generation; Author-Supplied Keyword: SNR signal-to-noise; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.bbamem.2016.08.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118357753&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Simmons, Jennifer O. AU - Meyers, Erik J. AU - Lien, Wen AU - Banfield, Rosalia L. AU - Roberts, Howard W. AU - Vandewalle, Kraig S. T1 - Effect of surface treatments on the mechanical properties and antimicrobial activity of desiccated glass ionomers. JO - Dental Materials JF - Dental Materials Y1 - 2016/11// VL - 32 IS - 11 M3 - Article SP - 1343 EP - 1351 SN - 01095641 AB - Objectives The purpose of this study was to evaluate the effect of various surface treatments on the mechanical properties and antibacterial activity of desiccated glass-ionomer (GI) and resin-modified glass-ionomer (RMGI) materials. Methods One hundred GI and RMGI specimens were fabricated in a mold, stored in 100% humidity for 24 h, placed in air to desiccate for 24 h, and then stored for one week in one of the five media [casein phosphopeptide–amorphous calcium phosphate (CPP–ACP), chlorhexidine (CHX), sodium fluoride (NaF), cetylpyridinium chloride (CPC), or 100% humidity (control)]. Fifty GI and RMGI specimens were tested in flexure to determine flexural strength and modulus, with the fragments used for Knoop hardness testing. The remaining 50 GI and RMGI specimens were covered with a suspension of Streptococcus mutans and incubated for 24 h. The bacterial suspension was removed and the specimens were washed. Sterile saline was added, vortex mixed, serially diluted, and plated. CFU/mLs were calculated after 3 days of incubation. Results Compared to the 100% humidity control group, surface treatment of the desiccated GI and RMGI materials had a variable effect on the mechanical properties. In general, NaF provided the greatest improvement in flexural strength and modulus. Surface treatment of the desiccated GI or RMGI specimens with CHX or CPC resulted in no growth of the S. mutans . NaF resulted in significantly lower CFU/mL than CPP–ACP, which was significantly lower than the control group. Significance Surface treatment with 5% NaF provides improved antimicrobial and strength properties of desiccated GI or RMGI materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Dental Materials is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE preparation KW - ANTI-infective agents KW - DENTAL glass ionomer cements KW - CHLORHEXIDINE KW - SODIUM fluoride KW - FLEXURAL strength KW - Antimicrobial activity KW - Desiccation KW - Glass ionomers KW - Mechanical properties KW - Surface treatment N1 - Accession Number: 118926287; Simmons, Jennifer O. 1; Email Address: jennifer.simmons.12@us.af.mil Meyers, Erik J. 1; Email Address: erik.meyers.1.ctr@us.af.mil Lien, Wen 2; Email Address: wen.lien.mil@mail.mil Banfield, Rosalia L. 3; Email Address: rosalia.banfield@us.af.mil Roberts, Howard W. 4; Email Address: howard.roberts@us.af.mil Vandewalle, Kraig S. 1; Email Address: kraig.vandewalle.3@us.af.mil; Affiliation: 1: United States Air Force, 1615 Truemper St., Joint Base San Antonio-Lackland, TX 78236, USA 2: United States Air Force, 3650 Chambers Pass, Ft. Sam Houston, TX 78023, USA 3: United States Air Force, 2200 Bergquist Dr., Joint Base San Antonio-Lackland, TX 78233, USA 4: United States Air Force, 301 Fisher St., Keesler AFB, MS 39534, USA; Source Info: Nov2016, Vol. 32 Issue 11, p1343; Subject Term: SURFACE preparation; Subject Term: ANTI-infective agents; Subject Term: DENTAL glass ionomer cements; Subject Term: CHLORHEXIDINE; Subject Term: SODIUM fluoride; Subject Term: FLEXURAL strength; Author-Supplied Keyword: Antimicrobial activity; Author-Supplied Keyword: Desiccation; Author-Supplied Keyword: Glass ionomers; Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Surface treatment; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.dental.2016.08.214 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118926287&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fernandez, Renny E. AU - Sanghavi, Bankim J. AU - Farmehini, Vahid AU - Chávez, Jorge L. AU - Hagen, Joshua AU - Kelley-Loughnane, Nancy AU - Chou, Chia-Fu AU - Swami, Nathan S. T1 - Aptamer-functionalized graphene-gold nanocomposites for label-free detection of dielectrophoretic-enriched neuropeptide Y. JO - Electrochemistry Communications JF - Electrochemistry Communications Y1 - 2016/11// VL - 72 M3 - Article SP - 144 EP - 147 SN - 13882481 AB - We present an electrokinetically enhanced aptamer sensing platform on a disposable plastic chip for label-free detection of neuropeptide Y (NPY), which is a key neurological biomarker. The sensor consists of aptamer-functionalized graphene-gold nanocomposites (Gr-AuNs) patterned inside a nanoslit that is embossed on cyclic olefin copolymer via nanoimprint lithography. Analyte molecules are dielectrophoretically focused through the nanoslit onto aptamer-immobilized Gr-AuNs for rapid and selective electrochemical detection of NPY at picomolar levels. [ABSTRACT FROM AUTHOR] AB - Copyright of Electrochemistry Communications is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEUROPEPTIDE Y KW - APTAMERS KW - DIELECTROPHORESIS KW - DIELECTRIC properties KW - LITHOGRAPHY KW - Aptamer KW - Electrokinetics KW - Graphene KW - Microfluidics KW - Neuropeptide KW - Tyrosine N1 - Accession Number: 119097429; Fernandez, Renny E. 1 Sanghavi, Bankim J. 1 Farmehini, Vahid 1 Chávez, Jorge L. 2 Hagen, Joshua 2 Kelley-Loughnane, Nancy 2 Chou, Chia-Fu 3 Swami, Nathan S. 1; Email Address: nswami@virginia.edu; Affiliation: 1: Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, VA 22904, USA 2: Air Force Research Laboratory, 711th Human Performance Wing, Wright-Patterson Air Force Base, Dayton, OH 45433, USA 3: Institute of Physics, Academia Sinica, Taipei, Taiwan; Source Info: Nov2016, Vol. 72, p144; Subject Term: NEUROPEPTIDE Y; Subject Term: APTAMERS; Subject Term: DIELECTROPHORESIS; Subject Term: DIELECTRIC properties; Subject Term: LITHOGRAPHY; Author-Supplied Keyword: Aptamer; Author-Supplied Keyword: Electrokinetics; Author-Supplied Keyword: Graphene; Author-Supplied Keyword: Microfluidics; Author-Supplied Keyword: Neuropeptide; Author-Supplied Keyword: Tyrosine; NAICS/Industry Codes: 323119 Other printing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.elecom.2016.09.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119097429&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anderson, William C. (Bill) T1 - How Microgrid is Changing the Energy Landscape. JO - Energy Engineering JF - Energy Engineering Y1 - 2016/11// VL - 113 IS - 6 M3 - Article SP - 53 EP - 62 SN - 01998595 AB - For the vast majority of people around the world, their electric power is delivered via a system that relies on centralized power generation coupled with significant transmission and distribution infrastructure to deliver electrical power from the site of generation to the point of use. That system has provided reliable and relatively inexpensive power to much of the world for well over a century. However, a new set of concerns and requirements point us towards an alternative approach to power generation and distribution. That alternative is microgrids. To many, microgrids appear as a new and novel idea. But, in reality the concept dates back to the origins of the electric industry. This old idea that is new again offers promise in terms of tackling some very real and very current energy issues, and promises to change the energy landscape of the future. Microgrid technologies offer real solutions to address the significant issues of (1) accessibility, (2) recovery, (3) resiliency, (4) economy and (5) sustainability. [ABSTRACT FROM AUTHOR] AB - Copyright of Energy Engineering is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Electric power production KW - Infrastructure (Economics) KW - Electric power transmission KW - Electric power distribution grids KW - Electric power systems -- Reliability N1 - Accession Number: 118090800; Anderson, William C. (Bill) 1; Affiliations: 1: United States Air Force for Installations, Environment and Logistics; Issue Info: 2016, Vol. 113 Issue 6, p53; Thesaurus Term: Electric power production; Thesaurus Term: Infrastructure (Economics); Thesaurus Term: Electric power transmission; Subject Term: Electric power distribution grids; Subject Term: Electric power systems -- Reliability; NAICS/Industry Codes: 221112 Fossil Fuel Electric Power Generation; NAICS/Industry Codes: 221121 Electric Bulk Power Transmission and Control; Number of Pages: 10p; Document Type: Article L3 - 10.1080/01998595.2016.11772068 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=118090800&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Marzano, Frank S. AU - Mattioli, Vinia AU - Milani, Luca AU - Magde, Kevin M. AU - Brost, George A. T1 - Sun-Tracking Microwave Radiometry: All-Weather Estimation of Atmospheric Path Attenuation at $Ka$ -, $V$ -, and $W$ -Band. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2016/11// VL - 64 IS - 11 M3 - Article SP - 4815 EP - 4827 SN - 0018926X AB - Sun-tracking (ST) microwave radiometry is a ground-based technique where the Sun is used as a beacon source. The atmospheric antenna noise temperature is measured by alternately pointing toward-the-Sun and off-the-Sun according to a beam switching strategy. By properly developing an ad hoc processing algorithm, we can estimate the atmospheric path attenuation in all-weather conditions. A theoretical framework is proposed to describe the ST radiometric measurements and to evaluate the overall error budget. Two different techniques, based, respectively, on elevation-scanning Langley method and on surface meteorological data method, are proposed and compared to estimate the clear-air reference. Application to available ST radiometric measurements at Ka-, V -, and W -band in Rome (NY, USA) is shown and discussed together with the test of new physically based prediction models for all-weather path attenuation estimation up to about 30 dB at V - and W -band from multichannel microwave radiometric data. Results show an appealing potential of this overall approach in order to overcome the difficulties to perform satellite-to-earth radiopropagation experiments in the unexplored millimeter-wave and submillimeter-wave frequency region, especially where experimental data from beacon receivers are not available. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVE radiometry KW - ANTENNA arrays KW - ANTENNAS (Electronics) KW - PHASED array antennas KW - ANTENNA radiation patterns KW - All-weather path attenuation KW - Atmospheric measurements KW - Attenuation KW - Brightness temperature KW - clouds and precipitation KW - ground-based microwave radiometry KW - microwave and millimeter-wave frequencies KW - Microwave measurement KW - Microwave radiometry KW - Microwave theory and techniques KW - Sun KW - Sun tracking (ST) N1 - Accession Number: 119240908; Marzano, Frank S. 1 Mattioli, Vinia 2 Milani, Luca 1 Magde, Kevin M. 3 Brost, George A. 3; Affiliation: 1: Department of Information Engineering, Sapienza University of Rome, Rome, Italy 2: Center of Excellence CETEMPS, University of L’Aquila, L’Aquila, Italy 3: Air Force Research Laboratory, Rome, NY, USA; Source Info: Nov2016, Vol. 64 Issue 11, p4815; Subject Term: MICROWAVE radiometry; Subject Term: ANTENNA arrays; Subject Term: ANTENNAS (Electronics); Subject Term: PHASED array antennas; Subject Term: ANTENNA radiation patterns; Author-Supplied Keyword: All-weather path attenuation; Author-Supplied Keyword: Atmospheric measurements; Author-Supplied Keyword: Attenuation; Author-Supplied Keyword: Brightness temperature; Author-Supplied Keyword: clouds and precipitation; Author-Supplied Keyword: ground-based microwave radiometry; Author-Supplied Keyword: microwave and millimeter-wave frequencies; Author-Supplied Keyword: Microwave measurement; Author-Supplied Keyword: Microwave radiometry; Author-Supplied Keyword: Microwave theory and techniques; Author-Supplied Keyword: Sun; Author-Supplied Keyword: Sun tracking (ST); NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 13p; Document Type: Article L3 - 10.1109/TAP.2016.2606568 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119240908&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhou, Jin AU - Kwan, Chiman AU - Ayhan, Bulent AU - Eismann, Michael T. T1 - A Novel Cluster Kernel RX Algorithm for Anomaly and Change Detection Using Hyperspectral Images. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2016/11// VL - 54 IS - 11 M3 - Article SP - 6497 EP - 6504 SN - 01962892 AB - The Reed–Xiaoli (RX) algorithm has been widely used as an anomaly detector for hyperspectral images. Recently, kernel RX (KRX) has been proven to yield high performance in anomaly detection and change detection. In this paper, we present a generalization of the KRX algorithm. The novel algorithm is called cluster KRX (CKRX), which becomes KRX under certain conditions. The key idea is to group background pixels into clusters and then apply a fast eigendecomposition algorithm to generate the anomaly detection index. Both global and local versions of CKRX have been implemented. Application to anomaly detection using actual hyperspectral images is included. In addition to anomaly detection, the CKRX algorithm has been integrated with other prediction algorithms for change detection. Spatially registered visible and near-infrared hyperspectral images collected from a tower-based geometry have been used in the anomaly and change detection studies. Receiver operating characteristics curves and actual computation times were used to compare different algorithms. It was demonstrated that CKRX has comparable detection performance as KRX, but with much lower computational requirements. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANOMALY detection (Computer security) KW - HYPERSPECTRAL imaging systems KW - RECEIVER operating characteristic curves KW - LANDSAT satellites KW - KERNEL (Computer software) KW - Anomaly detection KW - Approximation algorithms KW - Change detection algorithms KW - cluster kernel RX (CKRX) KW - Clustering algorithms KW - hyperspectral imaging KW - Kernel KW - kernel RX (KRX) KW - receiver operating characteristics (ROC) KW - Reed?Xiaoli (RX) KW - Signal processing algorithms N1 - Accession Number: 120288794; Zhou, Jin 1 Kwan, Chiman 2 Ayhan, Bulent 2 Eismann, Michael T. 3; Affiliation: 1: Google, Inc., Mountain View, CA, USA 2: Signal Processing, Inc., Rockville, MD, USA 3: Air Force Research Laboratory, Dayton, OH, USA; Source Info: Nov2016, Vol. 54 Issue 11, p6497; Subject Term: ANOMALY detection (Computer security); Subject Term: HYPERSPECTRAL imaging systems; Subject Term: RECEIVER operating characteristic curves; Subject Term: LANDSAT satellites; Subject Term: KERNEL (Computer software); Author-Supplied Keyword: Anomaly detection; Author-Supplied Keyword: Approximation algorithms; Author-Supplied Keyword: Change detection algorithms; Author-Supplied Keyword: cluster kernel RX (CKRX); Author-Supplied Keyword: Clustering algorithms; Author-Supplied Keyword: hyperspectral imaging; Author-Supplied Keyword: Kernel; Author-Supplied Keyword: kernel RX (KRX); Author-Supplied Keyword: receiver operating characteristics (ROC); Author-Supplied Keyword: Reed?Xiaoli (RX); Author-Supplied Keyword: Signal processing algorithms; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TGRS.2016.2585495 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120288794&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sihn, Sangwook AU - Childers, Lawrence B. AU - Walters, Craig T. AU - Forte, Mark S. AU - Roy, Ajit K. AU - Vernon, Jonathan P. T1 - Computational and experimental study on laser heating of a Ni-based metal alloy. JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2016/11// VL - 102 M3 - Article SP - 1034 EP - 1043 SN - 00179310 AB - Both computational and experimental studies were conducted to characterize complex heat transport and damage evolution phenomena in a metal alloy material subjected to laser irradiation. A Ni-based alloy, Inconel 718, was subjected to various irradiances of a flat-top, 4 cm diameter beam of continuous wave, 1.07 μm wavelength light. In this numerical study, a nonlinear transient finite element (FE) analysis, based on conductive, convective and radiative heat transfer, was conducted to predict temperature evolution (i.e., during heating, melting, and cooling conditions), damage initiation, and damage progression. A two-dimensional axisymmetric model was built with experimentally relevant plate geometry. ANSYS, a commercial FE software package, was used to conduct the nonlinear transient analyses. Such analyses employ an element removal feature to predict realistic evolution of the melt front within the laser heated Inconel 718 plates. The element removal scheme ensured that the laser energy supplied to removed elements no longer contributed to heating the rest of the intact material portion, and that the melt elements would not reappear (e.g., during cooling stage). Spanning a wide range of laser irradiance levels (i.e., from 11 W/cm 2 to 828 W/cm 2 ), the numerical model demonstrated good agreement with the experimentally measured temperatures during heating and cooling. After confirming the validity of measured temperature progression, the numerical model provided predictions in good agreement with experimentally measured penetration times and final damage (hole) sizes. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL alloys KW - LASER heating KW - PHYSICS experiments KW - HEAT transfer coefficient KW - HEAT -- Radiation & absorption KW - TEMPERATURE measurements N1 - Accession Number: 117294575; Sihn, Sangwook 1,2 Childers, Lawrence B. 1,3 Walters, Craig T. 1,4 Forte, Mark S. 1 Roy, Ajit K. 1 Vernon, Jonathan P. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright-Patterson Air Force Base, OH, USA 2: University of Dayton Research Institute, Nonstructural Materials Division, Dayton, OH, USA 3: Azimuth Corporation, Dayton, OH, USA 4: Craig Walters Associates, Powell, OH, USA; Source Info: Nov2016, Vol. 102, p1034; Subject Term: NICKEL alloys; Subject Term: LASER heating; Subject Term: PHYSICS experiments; Subject Term: HEAT transfer coefficient; Subject Term: HEAT -- Radiation & absorption; Subject Term: TEMPERATURE measurements; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2016.06.061 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117294575&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cheng, Meng-Dawn AU - Corporan, Edwin T1 - Volatile particles measured by vapor-particle separator. JO - Journal of Aerosol Science JF - Journal of Aerosol Science Y1 - 2016/11// VL - 101 M3 - Article SP - 207 EP - 219 SN - 00218502 AB - Vapor-Particle Separator (VPS) is a new technology developed for characterization of the volatile fraction of particulate matter in a combustion aerosol population. VPS incorporates a novel metallic membrane and operates in a cross-flow filtration mode for separation of vapor and solid (i.e. non-volatile) particles. Demonstration of the VPS technology on aircraft engine-emitted particles has led to the improvement of the technology and increased confidence on the robustness of its field performance. In this study, the performance of the VPS was evaluated against the Particle Measurement Programme (PMP) volatile particle remover (VPR), a standardized device used in heavy duty diesel engines for separation and characterization of non-volatile particulate matter. Using tetracontane particles in the laboratory reveals that the VPS performed reasonably well in removing the volatile species. In the field conditions, a single-mode particle size distribution was found for emitted particles from a T63 turboshaft engine at both idle and cruise engine power conditions. Removal of the volatile T63 engine particles by the VPS was consistent with that of PMP VPR. In tests on an F117 turbofan engine, the size distribution at the idle (4% rated) engine power condition was found to be bimodal, with the first mode consisting of particles smaller than 10 nm, which are believed to be mostly semi-volatile particles, while the second mode of larger size was a mixture of semi-volatile and non-volatile particles. The distribution was single modal at the 33% rated engine power with no secondary mode observed. Overall, for particles emitted by both engines, the removal efficiency of the VPS appears to surpass that of the PMP VPR by 8-10%. This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the US Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ). [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerosol Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICULATE matter KW - SEPARATION (Psychology) KW - MEMBRANES (Technology) KW - COMBUSTION KW - AEROSOLS (Sprays) KW - FILTERS & filtration KW - Engine emissions KW - F117 engine KW - T63 engine KW - Vapor-rarticle separator KW - Volatile particles N1 - Accession Number: 118156889; Cheng, Meng-Dawn 1 Corporan, Edwin 2; Affiliation: 1: Oak Ridge National Laboratory, Environmental Sciences Division, Oak Ridge, TN, USA 2: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson, OH, USA; Source Info: Nov2016, Vol. 101, p207; Subject Term: PARTICULATE matter; Subject Term: SEPARATION (Psychology); Subject Term: MEMBRANES (Technology); Subject Term: COMBUSTION; Subject Term: AEROSOLS (Sprays); Subject Term: FILTERS & filtration; Author-Supplied Keyword: Engine emissions; Author-Supplied Keyword: F117 engine; Author-Supplied Keyword: T63 engine; Author-Supplied Keyword: Vapor-rarticle separator; Author-Supplied Keyword: Volatile particles; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.jaerosci.2016.08.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118156889&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bryson, Dean E. AU - Marks, Christopher R. AU - Miller, Ryan M. AU - Rumpfkeil, Markus P. T1 - Multidisciplinary Design Optimization of Quiet, Hybrid-Electric Small Unmanned Aerial Systems. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2016/11// VL - 53 IS - 6 M3 - Article SP - 1959 EP - 1963 SN - 00218669 N1 - Accession Number: 120389706; Bryson, Dean E. 1 Marks, Christopher R. 2 Miller, Ryan M. 3 Rumpfkeil, Markus P. 4; Affiliation: 1: Research Aerospace Engineer, AFRL/RQVC, Aerospace Systems Directorate, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, 2130 Eighth Street, Ohio 45433 2: Aerospace Engineer, AFRL/RQTT, Aerospace Systems Directorate, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, 2130 Eighth Street, Ohio 45433 3: Chemical Engineer, AFRL/RQQE, Aerospace Systems Directorate, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, 2130 Eighth Street, Ohio 45433 4: Assistant Professor, University of Dayton, 300 College Park, Dayton, Ohio 45469; Source Info: Nov2016, Vol. 53 Issue 6, p1959; Number of Pages: 5p; Document Type: Article L3 - 10.2514/1.C033455 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120389706&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reichman, Brent O. AU - Downing, J. Micah AU - Aubert, Allan AU - Gee, Kent L. AU - Neilsen, Tracianne B. AU - McKinley, Richard L. AU - Wall, Alan T. AU - James, Michael M. T1 - Acoustical Environment During F-35B Vertical Landing Operations. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2016/11// VL - 53 IS - 6 M3 - Article SP - 1975 EP - 1979 SN - 00218669 N1 - Accession Number: 120389709; Reichman, Brent O. 1 Downing, J. Micah 2 Aubert, Allan 3 Gee, Kent L. 4 Neilsen, Tracianne B. 5 McKinley, Richard L. 6 Wall, Alan T. 7 James, Michael M. 8; Affiliation: 1: Ph.D. Candidate, Department of Physics and Astronomy, Brigham Young University, N283 ESC, Provo, Utah 84602 2: Chief Scientist, 29 North Market Street, Blue Ridge Research and Consulting, LLC, Asheville, Suite 700, North Carolina 28801 3: Senior Technical Specialist, Noise and Emissions Team Lead, NAVAIR Propulsion and Power, U.S. Navy, Naval Air Systems Command, Patuxent River, Building 106, Room 229c, 22195 Elmer Road, Maryland 20670 4: Associate Professor, Department of Physics and Astronomy, Brigham Young University, N283 ESC, Provo, Utah 84602 5: Part-Time Assistant Professor, Department of Physics and Astronomy, Brigham Young University, N283 ESC, Provo, Utah 84602 6: F-35 Performance and Specialty Engineering Acoustics Lead, Battlespace Acoustics Branch, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, 2610 Seventh Street, Building 441, Ohio 45433 7: Research Physicist, Battlespace Acoustics Branch, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, 2610 Seventh Street, Building 441, Ohio 45433 8: Senior Principal Engineer, Blue Ridge Research and Consulting, LLC, Asheville, 29 North Market Street, Suite 700, North Carolina 28801; Source Info: Nov2016, Vol. 53 Issue 6, p1975; Number of Pages: 5p; Document Type: Article L3 - 10.2514/1.C033533 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120389709&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Peana, Massimiliano AU - Medici, Serenella AU - Pangburn, Heather A. AU - Lamkin, Thomas J. AU - Ostrowska, Malgorzata AU - Gumienna-Kontecka, Elzbieta AU - Zoroddu, Maria Antonietta T1 - Manganese binding to antioxidant peptides involved in extreme radiation resistance in Deinococcus radiodurans. JO - Journal of Inorganic Biochemistry JF - Journal of Inorganic Biochemistry Y1 - 2016/11// VL - 164 M3 - Article SP - 49 EP - 58 SN - 01620134 AB - A decapeptide, DEHGTAVMLK (DP1), and its random scrambled version, THMVLAKGED (DP2), have been studied for their interactions with manganese. The amino acid composition of the peptides was selected to include the majority of the most prevalent amino acids present in a Deinococcus radiodurans bacterium cell-free extract that contains components capable of conferring extreme resistance to ionizing radiation. The extract appears to be rich in Mn(II) complexes which seem to be responsible for protecting proteins from Reactive Oxygen Species damage. We focused our attention on the interaction of the decapeptides with Mn(II) ion with the aim of obtaining information on the possible complexes formed, by using NMR, EPR, and ESI-MS techniques. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Inorganic Biochemistry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MANGANESE KW - ANTIOXIDANTS KW - PEPTIDES KW - DEINOCOCCUS radiodurans KW - RADIATION KW - Deinococcus radiodurans KW - Manganese KW - Peptides KW - Radiation resistance N1 - Accession Number: 119161335; Peana, Massimiliano 1; Email Address: peana@uniss.it Medici, Serenella 1 Pangburn, Heather A. 2 Lamkin, Thomas J. 3 Ostrowska, Malgorzata 4 Gumienna-Kontecka, Elzbieta 4 Zoroddu, Maria Antonietta 1; Email Address: zoroddu@uniss.it; Affiliation: 1: Department of Chemistry and Pharmacy, University of Sassari, Italy 2: STS on contract to Department of Aeromedical Research, United States Air Force School of Aerospace Medicine, USA 3: Air Force Research Laboratory, 711th HPW/RHXBC, Wright Patterson Air Force Base, OH 45433, USA 4: Faculty of Chemistry, University of Wroclaw, Poland; Source Info: Nov2016, Vol. 164, p49; Subject Term: MANGANESE; Subject Term: ANTIOXIDANTS; Subject Term: PEPTIDES; Subject Term: DEINOCOCCUS radiodurans; Subject Term: RADIATION; Author-Supplied Keyword: Deinococcus radiodurans; Author-Supplied Keyword: Manganese; Author-Supplied Keyword: Peptides; Author-Supplied Keyword: Radiation resistance; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.jinorgbio.2016.08.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119161335&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hasser, Peter J. AU - Malik, Arif S. AU - Langer, Kristina AU - Spradlin, Thomas J. AU - Hatamleh, Mohammad I. T1 - An Efficient Reliability-Based Simulation Method for Optimum Laser Peening Treatment. JO - Journal of Manufacturing Science & Engineering JF - Journal of Manufacturing Science & Engineering Y1 - 2016/11// VL - 138 IS - 11 M3 - Article SP - 111001-1 EP - 111001-14 SN - 10871357 AB - A method is introduced for efficient reliability-based design of laser peening (LP) suiface treatment to extend fatigue life of metal components. The method includes nonparametric probability density estimation, surrogate modeling using a new finite element (FE or FEA) approach, and reliability analysis with correlated random variables (RVs). Efficient LP simulation is achieved via a new technique termed single explicit analysis using time-dependent damping (SEATD), which reduces simulation times by a factor of 6. The example study of a three-point bend coupon reveals that fatigue life reliability significantly affects optimal LP design, as 52 laser spots are needed for 99% reliability versus 44 spots for 95%. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Manufacturing Science & Engineering is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RELIABILITY (Engineering) KW - SIMULATION methods & models KW - LASER peening KW - FATIGUE life (Materials science) KW - PROBABILITY density function KW - damping KW - fatigue life KW - finite element modeling KW - laser peening KW - reliability-based optimization KW - residual stress N1 - Accession Number: 119342633; Hasser, Peter J. 1; Email Address: hasser.peter@gmail.com Malik, Arif S. 2; Email Address: arif.malik@utdallas.edu Langer, Kristina 3; Email Address: kristina.langer@us.af.mil Spradlin, Thomas J. 3; Email Address: thomas.spradlin@us.af.mil Hatamleh, Mohammad I. 4; Email Address: mih150230@utdallas.edu; Affiliation: 1: Parks College of Engineering, Aviation and Technology, Saint Louis University, 3450 Lindell Boulevard, St. Louis, MO 63103. 2: Mem. ASME Mechanical Engineering Department, Erik Jonsson School of Engineering and Computer Science, The University of Texas at Dallas, 800 West Campbell Road, Richardson, TX 75080. 3: Air Force Research Laboratory, AFRL/RQVS, Wright-Patterson AFB, OH 45433. 4: Mechanical Engineering Department, Erik Jonsson School of Engineering and Computer Science, The University of Texas at Dallas, 800 West Campbell Road, Richardson, TX 75080.; Source Info: Nov2016, Vol. 138 Issue 11, p111001-1; Subject Term: RELIABILITY (Engineering); Subject Term: SIMULATION methods & models; Subject Term: LASER peening; Subject Term: FATIGUE life (Materials science); Subject Term: PROBABILITY density function; Author-Supplied Keyword: damping; Author-Supplied Keyword: fatigue life; Author-Supplied Keyword: finite element modeling; Author-Supplied Keyword: laser peening; Author-Supplied Keyword: reliability-based optimization; Author-Supplied Keyword: residual stress; Number of Pages: 14p; Illustrations: 1 Color Photograph, 13 Diagrams, 12 Charts, 13 Graphs; Document Type: Article L3 - 10.1115/1.4033604 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119342633&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yue, Hailing AU - Subramanyam, Guru AU - Cerny, Charles T1 - A novel capacitive loaded structure for miniaturized resonators. JO - Microwave & Optical Technology Letters JF - Microwave & Optical Technology Letters Y1 - 2016/11// VL - 58 IS - 11 M3 - Article SP - 2554 EP - 2557 SN - 08952477 AB - ABSTRACT Miniaturized resonators are designed with variable capacitive loading capability by utilizing both sides of the substrates with Printed Circuit Board technology. The proposed design integrates a spiral-shaped sub-wavelength inductive element with a parallel plate resonant structure of three variations to achieve notch depths of 37, 39, and 48 dB at 94, 138, and 116 MHz respectively within an area of 6.1 by 9.65 cm2 with reduced insertion losses and narrowed bandwidths. The ratio between the largest dimensions of structure to their guided wavelengths at resonance are all <0.05, demonstrating exceptional compactness of the design without sacrificing the performance of band-rejection behavior. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2554-2557, 2016 [ABSTRACT FROM AUTHOR] AB - Copyright of Microwave & Optical Technology Letters is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MINIATURE electronic equipment KW - RESONATORS KW - SUBSTRATES (Materials science) KW - PRINTED circuits KW - WAVELENGTHS KW - band-stop filters KW - spiral structures KW - sub-wavelength resonators N1 - Accession Number: 117719586; Yue, Hailing 1 Subramanyam, Guru 1 Cerny, Charles 2; Affiliation: 1: Department of Electrical and Computer Engineering, University of Dayton 2: Air Force Research Laboratory, Sensors Directorate, WPAFB; Source Info: Nov2016, Vol. 58 Issue 11, p2554; Subject Term: MINIATURE electronic equipment; Subject Term: RESONATORS; Subject Term: SUBSTRATES (Materials science); Subject Term: PRINTED circuits; Subject Term: WAVELENGTHS; Author-Supplied Keyword: band-stop filters; Author-Supplied Keyword: spiral structures; Author-Supplied Keyword: sub-wavelength resonators; NAICS/Industry Codes: 334412 Bare Printed Circuit Board Manufacturing; NAICS/Industry Codes: 334418 Printed Circuit Assembly (Electronic Assembly) Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 4p; Document Type: Article L3 - 10.1002/mop.30100 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117719586&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wilson, C. Brad AU - Harre, Joseph AU - Shaak, Thomas AU - Francis, Joseph AU - McLaughlin, Leslie D. T1 - The Psychological Effects of Rapid Aeromedical Evacuation in a Predator Exposure Animal Model of Post-Traumatic Stress Disorder. JO - Military Medicine JF - Military Medicine Y1 - 2016/11// VL - 181 IS - 11 M3 - journal article SP - e1561 EP - e1568 PB - AMSUS SN - 00264075 AB - Recent conflicts have contributed to an escalation in combat-related psychiatric disorders, including post-traumatic stress disorder (PTSD). Although technological advances have increased the speed from which battlefield injuries reach definitive care, mental health conditions have continued to rise. This study sought to analyze the effects of flight stressors and the lack of a postcombat decompression period on stress-related behavior. We hypothesized that a 1-week decompression period before flight would attenuate stress-related behavior compared to no decompression. PTSD-like effects were induced in male Sprague-Dawley rats. The rats were placed in cages with a cat on two occasions during the 31-day stress regimen. PTSD rats were also subjected to daily cage cohort changes. At the conclusion of the stress regimen, the animals were flown on a military aircraft (WC-130J) for 4 hours. They were subsequently tested via elevated plus-maze and fear conditioning system. The PTSD animals that experienced a decompression period demonstrated decreased anxiety as compared to the no decompression group. In contrast, no difference was noted between the non-PTSD decompression and no decompression flight and no flight groups. The decrease in anxiety between the PTSD flight groups suggests that a decompression period before evacuation may minimize the potential for PTSD development. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POST-traumatic stress disorder -- Treatment KW - POST-traumatic stress disorder -- Diagnosis KW - AERONAUTICS in medicine KW - MILITARY personnel -- Mental health KW - DECOMPRESSION sickness N1 - Accession Number: 119505776; Wilson, C. Brad 1 Harre, Joseph 2 Shaak, Thomas 2 Francis, Joseph 3 McLaughlin, Leslie D. 4; Affiliation: 1: United States Air Force Academy, Department of Biology, Fairchild Hall Consolidated Educational Training Facility, USAFA, CO 80840. 2: 81st Medical Group Clinical Research Laboratory, 301 Fisher Street, Keesler Air Force Base, MS 39534. 3: Comparative Biomedical Sciences, Louisiana State University, School of Veterinary Medicine, Skip Bertman Drive, Baton Rouge, LA 70803. 4: Pathobiological Sciences, Louisiana State University, School of Veterinary Medicine, Skip Bertman Drive, Baton Rouge, LA 70803.; Source Info: Nov2016, Vol. 181 Issue 11, pe1561; Subject Term: POST-traumatic stress disorder -- Treatment; Subject Term: POST-traumatic stress disorder -- Diagnosis; Subject Term: AERONAUTICS in medicine; Subject Term: MILITARY personnel -- Mental health; Subject Term: DECOMPRESSION sickness; Number of Pages: 8p; Illustrations: 3 Graphs; Document Type: journal article L3 - 10.7205/MILMED-D-16-00018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119505776&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 119505776 T1 - The Psychological Effects of Rapid Aeromedical Evacuation in a Predator Exposure Animal Model of Post-Traumatic Stress Disorder. AU - Wilson, C. Brad AU - Harre, Joseph AU - Shaak, Thomas AU - Francis, Joseph AU - McLaughlin, Leslie D. Y1 - 2016/11// N1 - Accession Number: 119505776. Language: English. Entry Date: In Process. Revision Date: 20161124. Publication Type: journal article. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 2984771R. SP - e1561 EP - e1568 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 181 IS - 11 CY - Bethesda, Maryland PB - AMSUS AB - Recent conflicts have contributed to an escalation in combat-related psychiatric disorders, including post-traumatic stress disorder (PTSD). Although technological advances have increased the speed from which battlefield injuries reach definitive care, mental health conditions have continued to rise. This study sought to analyze the effects of flight stressors and the lack of a postcombat decompression period on stress-related behavior. We hypothesized that a 1-week decompression period before flight would attenuate stress-related behavior compared to no decompression. PTSD-like effects were induced in male Sprague-Dawley rats. The rats were placed in cages with a cat on two occasions during the 31-day stress regimen. PTSD rats were also subjected to daily cage cohort changes. At the conclusion of the stress regimen, the animals were flown on a military aircraft (WC-130J) for 4 hours. They were subsequently tested via elevated plus-maze and fear conditioning system. The PTSD animals that experienced a decompression period demonstrated decreased anxiety as compared to the no decompression group. In contrast, no difference was noted between the non-PTSD decompression and no decompression flight and no flight groups. The decrease in anxiety between the PTSD flight groups suggests that a decompression period before evacuation may minimize the potential for PTSD development. SN - 0026-4075 AD - United States Air Force Academy, Department of Biology, Fairchild Hall Consolidated Educational Training Facility, USAFA, CO 80840. AD - 81st Medical Group Clinical Research Laboratory, 301 Fisher Street, Keesler Air Force Base, MS 39534. AD - Comparative Biomedical Sciences, Louisiana State University, School of Veterinary Medicine, Skip Bertman Drive, Baton Rouge, LA 70803. AD - Pathobiological Sciences, Louisiana State University, School of Veterinary Medicine, Skip Bertman Drive, Baton Rouge, LA 70803. U2 - PMID: 27849490. DO - 10.7205/MILMED-D-16-00018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=119505776&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Kandel, Shreedhar R. AU - Chiluwal, Shailendra AU - Jiang, Zhoufeng AU - Tang, Yiteng AU - Roland, Paul J. AU - Subedi, Kamal AU - Dimick, Douglas M. AU - Moroz, Pavel AU - Zamkov, Mikhail AU - Ellingson, Randy AU - Hu, Jianjun AU - Voevodin, Andrey A. AU - Sun, Liangfeng T1 - One-dimensional growth of colloidal PbSe nanorods in chloroalkanes. JO - Physica Status Solidi - Rapid Research Letters JF - Physica Status Solidi - Rapid Research Letters Y1 - 2016/11// VL - 10 IS - 11 M3 - Article SP - 833 EP - 837 SN - 18626254 AB - Catalyst-free, one-pot synthesis of colloidal PbSe nanorods is demonstrated. The co-solvent chloroalkanes play a critical role in driving a one-dimensional growth of PbSe nanorods. The formation of the nanorod is likely governed by the anisotropic growth of the crystal due to the different reactivity of the facets. The photoluminescence quantum yield of the nanorods is above 25%, indicating well-passivated surfaces. (© 2016 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi - Rapid Research Letters is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHLOROALKANES KW - NANORODS KW - LEAD selenide crystals KW - CRYSTAL growth KW - PHOTOLUMINESCENCE KW - chloroalkanes KW - growth KW - lead selenide KW - nanorods KW - photoluminescence N1 - Accession Number: 119575668; Kandel, Shreedhar R. 1 Chiluwal, Shailendra 1 Jiang, Zhoufeng 1,2 Tang, Yiteng 1,2 Roland, Paul J. 3 Subedi, Kamal 1 Dimick, Douglas M. 1 Moroz, Pavel 1,2 Zamkov, Mikhail 1,2 Ellingson, Randy 3 Hu, Jianjun 4 Voevodin, Andrey A. 4,5 Sun, Liangfeng 1,2; Affiliation: 1: Department of Physics and Astronomy, Bowling Green State University 2: Center of Photochemical Sciences, Bowling Green State University 3: Department of Physics and Astronomy, Wright Center for Photovoltaic Innovation and Commercialization, School of Solar and Advanced Renewable Energy, University of Toledo 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base 5: Present address: Department of Materials Science and Engineering, College of Engineering, University of North Texas; Source Info: Nov2016, Vol. 10 Issue 11, p833; Subject Term: CHLOROALKANES; Subject Term: NANORODS; Subject Term: LEAD selenide crystals; Subject Term: CRYSTAL growth; Subject Term: PHOTOLUMINESCENCE; Author-Supplied Keyword: chloroalkanes; Author-Supplied Keyword: growth; Author-Supplied Keyword: lead selenide; Author-Supplied Keyword: nanorods; Author-Supplied Keyword: photoluminescence; Number of Pages: 5p; Document Type: Article L3 - 10.1002/pssr.201600278 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119575668&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Premathilaka, Shashini M. AU - Jiang, Zhoufeng AU - Antu, Antara AU - Leffler, Joey AU - Hu, Jianjun AU - Roy, Ajit AU - Sun, Liangfeng T1 - A robust method for the synthesis of colloidal PbS nanosheets. JO - Physica Status Solidi - Rapid Research Letters JF - Physica Status Solidi - Rapid Research Letters Y1 - 2016/11// VL - 10 IS - 11 M3 - Article SP - 838 EP - 842 SN - 18626254 AB - In the synthesis of colloidal PbS nanosheets, acetic acid - either injected externally or produced during the reaction - has a significant effect on the growth of the nanosheets. When the acetic acid to lead molar ratio is above 1:8, no nanosheets are observed in the product. By replacing lead acetate with lead oxide to prepare the lead precursor for the reaction, the effect of acetic acid is avoided, resulting in a robust synthesis with nearly 100% success rate. In the new synthesis, the purity of trioctylphosphine (the co-solvent for sulfur precursor) has no significant effect on the formation of nanosheets. Thickness tunability is achieved in the acetate-free synthesis by tuning the reaction temperature. (© 2016 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi - Rapid Research Letters is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLOID synthesis KW - LEAD sulfide KW - ACETIC acid KW - CHEMICAL reactions KW - CHEMICAL precursors KW - acetic acid KW - lead sulphide KW - nanosheets KW - robust synthesis N1 - Accession Number: 119575665; Premathilaka, Shashini M. 1,2 Jiang, Zhoufeng 1,2 Antu, Antara 1 Leffler, Joey 1 Hu, Jianjun 3 Roy, Ajit 3 Sun, Liangfeng 1,2; Affiliation: 1: Department of Physics and Astronomy, Bowling Green State University 2: Center for Photochemical Sciences, Bowling Green State University 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base; Source Info: Nov2016, Vol. 10 Issue 11, p838; Subject Term: COLLOID synthesis; Subject Term: LEAD sulfide; Subject Term: ACETIC acid; Subject Term: CHEMICAL reactions; Subject Term: CHEMICAL precursors; Author-Supplied Keyword: acetic acid; Author-Supplied Keyword: lead sulphide; Author-Supplied Keyword: nanosheets; Author-Supplied Keyword: robust synthesis; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1002/pssr.201600294 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119575665&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wainscott, Heidi1, Heidi.Wainscott@usafa.edu T1 - Multiple-Choice Answers: To Change or Not to Change? Perhaps Not Such a Simple Question. JO - Physics Teacher JF - Physics Teacher J1 - Physics Teacher PY - 2016/11// Y1 - 2016/11// VL - 54 IS - 8 CP - 8 M3 - Article SP - 469 EP - 471 SN - 0031921X AB - The article discusses a study investigating trend among students to change their answers from the right answer to the wrong answer in multiple-choice quiz. It revealed that the majority of answer were changed from wrong to right, and that most of the students who changed their answers improved their test scores. KW - Multiple choice examinations KW - Grading & marking (Students) KW - Test scoring KW - Educational tests & measurements KW - Trend analysis N1 - Accession Number: 118996303; Authors:Wainscott, Heidi 1 Email Address: Heidi.Wainscott@usafa.edu; Affiliations: 1: United States Air Force Academy, USAF Acadamy, CO; Subject: Trend analysis; Subject: Multiple choice examinations; Subject: Grading & marking (Students); Subject: Test scoring; Subject: Educational tests & measurements; Number of Pages: 3p; Record Type: Article L3 - 10.1119/1.4965266 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=118996303&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR AU - Yang, Jinshan AU - Downes, Rebekah AU - Schrand, Amanda AU - Park, Jin Gyu AU - Liang, Richard AU - Xu, Chengying T1 - High electrical conductivity and anisotropy of aligned carbon nanotube nanocomposites reinforced by silicon carbonitride. JO - Scripta Materialia JF - Scripta Materialia Y1 - 2016/11// VL - 124 M3 - Article SP - 21 EP - 25 SN - 13596462 AB - Aligned carbon nanotube (CNT) sheets reinforced with silicon carbonitride were prepared by the infiltration and pyrolysis of liquid polysilazane into mechanically stretched CNTs. The resultant nanocomposites contained a high volume fraction of CNTs (60 vol%), and due to alignment, reached an electrical conductivity of up to 2.2 × 10 5 S m − 1 . The electrical conductivity was anisotropic based upon the CNT alignment and changed from 3.3 to 9.2 after the pyrolysis process. The high electrical conductivity of the nanocomposites contributes to their potential application in electromagnetic interference shielding. [ABSTRACT FROM AUTHOR] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON carbide KW - ANISOTROPY KW - CARBON nanotubes KW - NANOCOMPOSITE materials KW - PYROLYSIS KW - POLYMER solutions KW - ELECTROMAGNETIC interference KW - Alignment KW - Carbon nanotubes KW - Ceramic matrix composites KW - Electrical properties KW - Scanning electron microscopy N1 - Accession Number: 117733073; Yang, Jinshan 1 Downes, Rebekah 2 Schrand, Amanda 3 Park, Jin Gyu 2 Liang, Richard 2 Xu, Chengying 1; Email Address: cxu@fsu.edu; Affiliation: 1: Department of Mechanical Engineering, Florida State University, Tallahassee, FL 32310, USA 2: Department of Industrial and Manufacturing Engineering, Florida State University, Tallahassee, FL 32310, USA 3: Air Force Research Laboratory, Munitions Directorate, Fuzes Branch, Eglin AFB, FL 32542, USA; Source Info: Nov2016, Vol. 124, p21; Subject Term: SILICON carbide; Subject Term: ANISOTROPY; Subject Term: CARBON nanotubes; Subject Term: NANOCOMPOSITE materials; Subject Term: PYROLYSIS; Subject Term: POLYMER solutions; Subject Term: ELECTROMAGNETIC interference; Author-Supplied Keyword: Alignment; Author-Supplied Keyword: Carbon nanotubes; Author-Supplied Keyword: Ceramic matrix composites; Author-Supplied Keyword: Electrical properties; Author-Supplied Keyword: Scanning electron microscopy; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.scriptamat.2016.06.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117733073&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Balasubramaniam, K. AU - Henry, T. T1 - Sunspot Numbers from ISOON: A Ten-Year Data Analysis. JO - Solar Physics JF - Solar Physics Y1 - 2016/11// VL - 291 IS - 9/10 M3 - Article SP - 3123 EP - 3138 SN - 00380938 AB - Sunspot numbers are important tracers of historical solar activity. They are important in predicting the oncoming solar maximum, in the design of lifetimes of space assets, and in assessing the extent of solar-radiation impact on the space environment. Historically, sunspot numbers have been obtained visually from sunspot drawings. The availability of digital images from the US Air Force Improved Solar Optical Observing Network (ISOON) prototype telescope concurrent to observer-dependent sunspot numbers recorded at the National Solar Observatory (NSO) has provided a basis for comparing sunspot numbers determined from the two methods. We compare sunspot numbers from visual and digital methods observed nearly simultaneously. The advantages of digital imagery are illustrated. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUNSPOTS KW - DATA analysis KW - SOLAR cycle KW - ASTRONOMICAL observations KW - DIGITAL images KW - Solar cycle KW - Sunspot numbers KW - Sunspots N1 - Accession Number: 119596980; Balasubramaniam, K. 1; Email Address: ks.bala@yahoo.com Henry, T. 2; Affiliation: 1: Air Force Research Laboratory , Space Vehicles Directorate , Kirtland AFB USA 2: Boston College at Air Force Research Laboratory , Kirtland AFB USA; Source Info: Nov2016, Vol. 291 Issue 9/10, p3123; Subject Term: SUNSPOTS; Subject Term: DATA analysis; Subject Term: SOLAR cycle; Subject Term: ASTRONOMICAL observations; Subject Term: DIGITAL images; Author-Supplied Keyword: Solar cycle; Author-Supplied Keyword: Sunspot numbers; Author-Supplied Keyword: Sunspots; Number of Pages: 16p; Document Type: Article L3 - 10.1007/s11207-016-0874-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119596980&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2016-09682-001 AN - 2016-09682-001 AU - Cigrang, Jeffrey A. AU - Cordova, James V. AU - Gray, Tatiana D. AU - Najera, Elizabeth AU - Hawrilenko, Matt AU - Pinkley, Crystal AU - Nielsen, Matthew AU - Tatum, JoLyn AU - Redd, Kristen T1 - The marriage checkup: Adapting and implementing a brief relationship intervention for military couples. JF - Cognitive and Behavioral Practice JO - Cognitive and Behavioral Practice JA - Cogn Behav Pract Y1 - 2016/11// VL - 23 IS - 4 SP - 561 EP - 570 CY - Netherlands PB - Elsevier Science SN - 1077-7229 AD - Cigrang, Jeffrey A., Wright State University, School of Professional Psychology, 9 N. Edwin C. Moses Boulevard, Dayton, OH, US, 45402-8470 N1 - Accession Number: 2016-09682-001. Partial author list: First Author & Affiliation: Cigrang, Jeffrey A.; Wright State University, Dayton, OH, US. Other Publishers: Association for Advancement of Behavior Therapy. Release Date: 20160225. Correction Date: 20161010. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Cigrang, Jeffrey A. Major Descriptor: Couples Therapy; Marital Relations; Marriage; Military Families; Marriage and Family Measures. Classification: Group & Family Therapy (3313); Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: The Marriage Checkup. Methodology: Empirical Study; Qualitative Study. Page Count: 10. Issue Publication Date: Nov, 2016. Publication History: First Posted Date: Feb 4, 2016; Accepted Date: Jan 11, 2016; First Submitted Date: Apr 5, 2015. Copyright Statement: Published by Elsevier Ltd. All rights reserved. Association for Behavioral and Cognitive Therapies. 2016. AB - Given the significant negative impact of relationship distress on the health and well being of members of the military, preventative and accessible care is needed in order to provide crucial relationship support to service members and their families. This paper presents the rationale, key considerations, and feasibility for adapting the Marriage Checkup (MC), a brief intervention for enhancing marital resiliency, for use by internal behavioral health consultants (IBHCs) working in an integrated primary care clinic serving an active duty military population. We detail the adapted MC protocol, which was revised to contain military-centric content and fit into the fast-paced environment of primary care (e.g., streamlined to fit within three 30-minute appointments). IBHCs working in primary care were trained to offer the intervention at two air force bases. Twenty couples and 1 individual have completed the MC and a 1-month follow-up assessment. The MC intervention appeared to be well-received by both couples and IBHCs. In this paper, we provide specific guidance for clinicians and providers who are interested in integrating the Marriage Checkup into their practice. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Marriage Checkup KW - military personnel KW - marital relations KW - couples therapy KW - 2016 KW - Couples Therapy KW - Marital Relations KW - Marriage KW - Military Families KW - Marriage and Family Measures KW - 2016 U1 - Sponsor: US Department of Defense, US. Grant: FA8650-12-D-6280. Recipients: Cigrang, Jeffrey A.; Cordova, James V. DO - 10.1016/j.cbpra.2016.01.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-09682-001&site=ehost-live&scope=site UR - jeffrey.cigrang@wright.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Chen, Tong AU - Li, Zhiang AU - Chen, Jifang AU - Ge, Wen AU - Liu, Min AU - Lu, Yalin T1 - Hydrothermal synthesis and formation mechanism of Aurivillius Bi5Fe0.9Co0.1Ti3O15 nanosheets. JO - CrystEngComm JF - CrystEngComm Y1 - 2016/10/21/ VL - 18 IS - 39 M3 - Article SP - 7449 EP - 7456 SN - 14668033 AB - As potential single-phase multiferroic materials, Aurivillius compounds have attracted much interest in recent years. In this paper, Bi5Fe0.9Co0.1Ti3O15 (BFCTO) nanosheets were first synthesized by a hydrothermal method; lateral length and thickness of them are ∼600 nm and ∼100 nm, respectively. The BFCTO nanosheets were assumed to form by a co-effect of the aggregate process, the oriented attachment of neighboring nanorods, and Ostwald ripening. Besides, an obvious hysteresis loop with 2Mr = ∼0.55 emu g−1 and 2Hc = ∼2600 Oe at 300 K was observed in the final products. Both dielectric permittivity and dielectric loss decrease with the increase of the frequency at room temperature. Our results could serve as guidance to realize a controllable synthesis of Aurivillius nanoparticles and will shed light on designing new nanodevices. [ABSTRACT FROM AUTHOR] AB - Copyright of CrystEngComm is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROTHERMAL synthesis KW - BISMUTH compounds KW - NANORODS KW - OSTWALD ripening KW - DIELECTRIC loss N1 - Accession Number: 118605567; Chen, Tong 1 Li, Zhiang 1 Chen, Jifang 1 Ge, Wen 1 Liu, Min 1,2 Lu, Yalin 1,2,3,4; Affiliation: 1: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, PR China 2: Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei 230026, PR China 3: Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, PR China 4: Laser Optics Research Center, Physics Department, United States Air Force Academy, Colorado 80840, USA; Source Info: 10/21/2016, Vol. 18 Issue 39, p7449; Subject Term: HYDROTHERMAL synthesis; Subject Term: BISMUTH compounds; Subject Term: NANORODS; Subject Term: OSTWALD ripening; Subject Term: DIELECTRIC loss; Number of Pages: 8p; Document Type: Article L3 - 10.1039/c6ce00436a UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118605567&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sarkisov, G. S. AU - Caplinger, J. AU - Parada, F. AU - Sotnikov, V. I. T1 - Breakdown dynamics of electrically exploding thin metal wires in vacuum. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2016/10/21/ VL - 120 IS - 15 M3 - Article SP - 1 EP - 4 SN - 00218979 AB - Using a two-frame intensified charge coupled device (iCCD) imaging system with a 2 ns exposure time, we observed the dynamics of voltage breakdown and corona generation in experiments of fast ns-time exploding fine Ni and stainless-steel (SS) wires in a vacuum. These experiments show that corona generation along the wire surface is subjected to temporal-spatial inhomogeneity. For both metal wires, we observed an initial generation of a bright cathode spot before the ionization of the entire wire length. This cathode spot does not expand with time. For 25.4 μm diameter Ni and SS wire explosions with positive polarity, breakdown starts from the ground anode and propagates to the high voltage cathode with speeds approaching 3500 km/s or approximately one percent of light speed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXPLODING wire phenomena KW - BREAKDOWN voltage KW - CHARGE coupled devices KW - STAINLESS steel KW - NICKEL KW - SPEED of light N1 - Accession Number: 119025916; Sarkisov, G. S. 1 Caplinger, J. 2 Parada, F. 2 Sotnikov, V. I. 2; Affiliation: 1: Raytheon Ktech, Directed Energy Department, 1300 Eubank, Albuquerque, New Mexico 87123, USA 2: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 10/21/2016, Vol. 120 Issue 15, p1; Subject Term: EXPLODING wire phenomena; Subject Term: BREAKDOWN voltage; Subject Term: CHARGE coupled devices; Subject Term: STAINLESS steel; Subject Term: NICKEL; Subject Term: SPEED of light; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 4p; Illustrations: 1 Black and White Photograph, 1 Diagram, 1 Chart, 1 Graph; Document Type: Article L3 - 10.1063/1.4965700 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119025916&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Godman, Nicholas P. AU - Adas, Sonya K. AU - Hellwig, Karl M. AU - Ball, David W. AU - Balaich, Gary J. AU - Iacono, Scott T. T1 - Synthesis, Electrochemical Characterization, and Linear Free Energy Relationship of 1,3-Diphenyl-6-alkyl/arylfulvenes. JO - Journal of Organic Chemistry JF - Journal of Organic Chemistry Y1 - 2016/10/21/ VL - 81 IS - 20 M3 - Article SP - 9630 EP - 9638 SN - 00223263 AB - A series of 1,3-diphenyl-6-alkyl/arylfulvenes was prepared, and the electrochemical properties were investigated. The addition of phenyl groups about the fulvene raised the reduction potential and helped to stabilize the electrochemically generated radical anion. The addition of various functional groups onto the phenyl ring at the 6-position of 1,3,6-triphenylfulvene results in a linear free energy relationship between reduction potential and the Hammett substituent constant, σ. Further extending the conjugation at the 6-position of 1,3-diphenyl-6-arylfulvenes increases the reversibility of the redox reactions, but does not appear to further stabilize the generated radical anion. This in-depth investigation provides evidence that the compounds studied may have utility in light-harvesting applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Organic Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 119050365; Godman, Nicholas P. 1 Adas, Sonya K. 1 Hellwig, Karl M. 1 Ball, David W. 2 Balaich, Gary J. 1; Email Address: gary.balaich@usafa.edu Iacono, Scott T. 1; Email Address: scott.iacono@usafa.edu; Affiliation: 1: Department of Chemistry and Chemistry Research Center, United States Air Force Academy, Colorado Springs, Colorado 80840, United States 2: Department of Chemistry, Cleveland State University, Cleveland, Ohio 44415, United States; Source Info: 10/21/2016, Vol. 81 Issue 20, p9630; Number of Pages: 9p; Document Type: Article L3 - 10.1021/acs.joc.6b01698 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119050365&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heidi Clarke AU - Timothy Brown AU - Jianjun Hu AU - Raj Ganguli AU - Amber Reed AU - Andrey Voevodin AU - Patrick J Shamberger T1 - Microstructure dependent filament forming kinetics in HfO2 programmable metallization cells. JO - Nanotechnology JF - Nanotechnology Y1 - 2016/10/21/ VL - 27 IS - 42 M3 - Article SP - 1 EP - 1 SN - 09574484 AB - Variability remains the principal concern for commercialization of HfO2 based resistance switching devices. Here, we investigate the role of thermal processing conditions on internal structure of atomic layer deposited HfO2 thin films, and the impact of that structure on filament forming kinetics of p+ Si/HfO2/Cu and TiN/HfO2/Cu devices. Regardless of bias polarity or electrode metal, filament formation times are at least one order of magnitude shorter in polycrystalline than in amorphous films, which we attribute to the presence of fast ion migration along grain boundaries. Within polycrystalline films, filament formation times are correlated with degree of crystalline orientation. Inter-device variability in forming time is roughly equivalent across HfO2 film processing conditions. The kinetics of filament forming are shown to be highly dependent on HfO2 microstructure, with possible implications for the inter-device variability of subsequent switching cycles. [ABSTRACT FROM AUTHOR] AB - Copyright of Nanotechnology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - NANOTECHNOLOGY -- Research KW - ATOMIC layer deposition KW - HAFNIUM oxide films KW - POLYCRYSTALLINE semiconductors N1 - Accession Number: 118194893; Heidi Clarke 1 Timothy Brown 1 Jianjun Hu 2,3 Raj Ganguli 2 Amber Reed 2 Andrey Voevodin 4 Patrick J Shamberger 1; Email Address: patrick.shamberger@tamu.edu; Affiliation: 1: Department of Materials Science and Engineering, Dwight Look College of Engineering, Texas A&M University, College Station, TX, 77843, USA 2: Nanoelectronic Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, OH 45459, USA 3: Universal Technology Corporation, Dayton, OH 45459, USA 4: Department of Materials Science and Engineering, College of Engineering, University of North Texas, Denton, TX 76203, USA; Source Info: 10/21/2016, Vol. 27 Issue 42, p1; Subject Term: MICROSTRUCTURE; Subject Term: NANOTECHNOLOGY -- Research; Subject Term: ATOMIC layer deposition; Subject Term: HAFNIUM oxide films; Subject Term: POLYCRYSTALLINE semiconductors; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0957-4484/27/42/425709 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118194893&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chambreau, Steven D. AU - Koh, Christine J. AU - Popolan-Vaida, Denisia M. AU - Gallegos, Christopher J. AU - Hooper, Justin B. AU - Bedrov, Dmitry AU - Vaghjiani, Ghanshyam L. AU - Leone, Stephen R. T1 - Flow-Tube Investigations of Hypergolic Reactions of a Dicyanamide Ionic Liquid Via Tunable Vacuum Ultraviolet Aerosol Mass Spectrometry. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2016/10/20/ VL - 120 IS - 41 M3 - Article SP - 8011 EP - 8023 SN - 10895639 AB - The unusually high heats of vaporization of room-temperature ionic liquids (RTILs) complicate the utilization of thermal evaporation to study ionic liquid reactivity. Although effusion of RTILs into a reaction flow-tube or mass spectrometer is possible, competition between vaporization and thermal decomposition of the RTIL can greatly increase the complexity of the observed reaction products. In order to investigate the reaction kinetics of a hypergolic RTIL, 1-butyl-3-methylimidazolium dicyanamide (BMIM+DCA-) was aerosolized and reacted with gaseous nitric acid, and the products were monitored via tunable vacuum ultraviolet photoionization time-of-flight mass spectrometry at the Chemical Dynamics Beamline 9.0.2 at the Advanced Light Source. Reaction product formation at m/z 42, 43, 44, 67, 85, 126, and higher masses was observed as a function of HNO3 exposure. The identities of the product species were assigned to the masses on the basis of their ionization energies. The observed exposure profile of the m/z 67 signal suggests that the excess gaseous HNO3 initiates rapid reactions near the surface of the RTIL aerosol. Nonreactive molecular dynamics simulations support this observation, suggesting that diffusion within the particle may be a limiting step. The mechanism is consistent with previous reports that nitric acid forms protonated dicyanamide species in the first step of the reaction. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CALCIUM cyanamide KW - IONIC liquids KW - FAR ultraviolet radiation KW - AEROSOLS (Sprays) KW - MASS spectrometry KW - CHEMICAL reactions N1 - Accession Number: 119004014; Chambreau, Steven D. 1 Koh, Christine J. 2 Popolan-Vaida, Denisia M. 2,3 Gallegos, Christopher J. 4 Hooper, Justin B. 5,6 Bedrov, Dmitry 5,6 Vaghjiani, Ghanshyam L. 4; Email Address: ghanshyam.vaghjiani@us.af.mil Leone, Stephen R. 2,3; Affiliation: 1: ERC, Inc., Edwards Air Force Base, California 93524, United States 2: Departments of Chemistry and Physics, University of California, Berkeley, California 94720, United States 3: Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States 4: Propellants Branch, Rocket Propulsion Division, Aerospace Systems Directorate, Air Force Research Laboratory, AFRL/RQRP, Edwards Air Force Base, California, 93524, United States 5: Department of Materials Science and Engineering, University of Utah, 122 South Central Campus Drive, Room 304, Salt Lake City, Utah 84112, United States 6: Wasatch Molecular Inc., 825 North 300 West, Salt Lake City, Utah 84103, United States; Source Info: Oct2016, Vol. 120 Issue 41, p8011; Subject Term: CALCIUM cyanamide; Subject Term: IONIC liquids; Subject Term: FAR ultraviolet radiation; Subject Term: AEROSOLS (Sprays); Subject Term: MASS spectrometry; Subject Term: CHEMICAL reactions; Number of Pages: 13p; Document Type: Article L3 - 10.1021/acs.jpca.6b06289 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119004014&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dias, Alvaro M. AU - Manger, Paul AU - Saniova, Beata AU - Perlovsky, Leonid T1 - Commentary: Free Will and Neuroscience: From Explaining Freedom Away to New Ways of Operationalizing and Measuring It. JO - Frontiers in Human Neuroscience JF - Frontiers in Human Neuroscience Y1 - 2016/10/19/ VL - 10 M3 - Opinion SP - 1 EP - 3 SN - 16625161 AB - The authors reflect on the article "Free Will and Neuroscience: From Explaining Freedom Away to New Ways of Operationalizing and Measuring It," by Andrea Lavazza in the 2016 issue. Topics include the nature of consciousness and the concept of free will, the role of phenomenal consciousness (P-states) in decision-making and efferent commands, and how consciousness functions based on inferences of first order mental states. KW - NEUROSCIENCES KW - FREE will & determinism KW - CONSCIOUSNESS KW - DECISION making KW - EFFERENT pathways KW - INFERENCE (Logic) KW - brain KW - cognitive science KW - consciousness KW - mental states KW - phenomenological psychology N1 - Accession Number: 118954100; Dias, Alvaro M. 1; Email Address: alvaromd@usp.br Manger, Paul 2 Saniova, Beata 3 Perlovsky, Leonid 4; Affiliation: 1: Clinical Neuroscience Lab "LinC", Department of Psychiatry, Federal University of São Paulo, São Paulo, Brazil 2: University of the Witwatersrand, South Africa 3: Comenius University, Slovakia 4: Harvard University and Air Force Research Laboratory, USA; Source Info: 10/19/2016, Vol. 10, p1; Subject Term: NEUROSCIENCES; Subject Term: FREE will & determinism; Subject Term: CONSCIOUSNESS; Subject Term: DECISION making; Subject Term: EFFERENT pathways; Subject Term: INFERENCE (Logic); Author-Supplied Keyword: brain; Author-Supplied Keyword: cognitive science; Author-Supplied Keyword: consciousness; Author-Supplied Keyword: mental states; Author-Supplied Keyword: phenomenological psychology; Number of Pages: 3p; Document Type: Opinion L3 - 10.3389/fnhum.2016.00509 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118954100&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiang, Jie AU - Pachter, Ruth AU - Islam, Ahmad E. AU - Maruyama, Benji AU - Boeckl, John J. T1 - Defect-induced Raman spectroscopy in single-layer graphene with boron and nitrogen substitutional defects by theoretical investigation. JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2016/10/16/ VL - 663 M3 - Article SP - 79 EP - 83 SN - 00092614 AB - Although advances in heteroatom incorporation into the single-layer graphene lattice resulted in films with large carrier densities, careful characterization by Raman spectroscopy is important for assessment of the material’s quality. We investigated theoretically I ( D )/ I ( D ′) Raman intensity ratios induced by B- and N- substitutional doping, demonstrated to be consistent with measurements. Calculated Fermi level shifts showed that for a moderate doping density results are comparable to electrolyte gating, while analytical analysis of the electron-defect scattering provided insight into changes of cross-sections. Effects of doping density on the D band intensity and broadening were quantified, and will assist in graphene characterization. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN spectroscopy KW - GRAPHENE KW - BORON KW - NITROGEN KW - CARRIER density (Semiconductors) N1 - Accession Number: 119000234; Jiang, Jie 1 Pachter, Ruth 1; Email Address: ruth.pachter@us.af.mil Islam, Ahmad E. 1 Maruyama, Benji 1 Boeckl, John J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Oct2016, Vol. 663, p79; Subject Term: RAMAN spectroscopy; Subject Term: GRAPHENE; Subject Term: BORON; Subject Term: NITROGEN; Subject Term: CARRIER density (Semiconductors); NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.cplett.2016.09.067 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119000234&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chia-Suei Hung AU - Sandra Zingarelli AU - Nadeau, Lloyd J. AU - Biffinger, Justin C. AU - Drake, Carrie A. AU - Crouch, Audra L. AU - Barlow, Daniel E. AU - Russell, Jr., John N. AU - Crookes-Goodson, Wendy J. T1 - Carbon Catabolite Repression and Impranil Polyurethane Degradation in Pseudomonas protegens Strain Pf-5. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2016/10/15/ VL - 82 IS - 20 M3 - Article SP - 6080 EP - 6090 SN - 00992240 AB - Polyester polyurethane (PU) coatings are widely used to help protect underlying structural surfaces but are susceptible to biological degradation. PUs are susceptible to degradation by Pseudomonas species, due in part to the degradative activity of secreted hydrolytic enzymes. Microorganisms often respond to environmental cues by secreting enzymes or secondary metabolites to benefit their survival. This study investigated the impact of exposing several Pseudomonas strains to select carbon sources on the degradation of the colloidal polyester polyurethane Impranil DLN (Impranil). The prototypic Pseudomonas protegens strain Pf-5 exhibited Impranil-degrading activities when grown in sodium citrate but not in glucose-containing medium. Glucose also inhibited the induction of Impranil-degrading activity by citrate-fed Pf-5 in a dose-dependent manner. Biochemical and mutational analyses identified two extracellular lipases present in the Pf-5 culture supernatant (PueA and PueB) that were involved in degradation of Impranil. Deletion of the pueA gene reduced Impranil-clearing activities, while pueB deletion exhibited little effect. Removal of both genes was necessary to stop degradation of the polyurethane. Bioinformatic analysis showed that putative Cbr/Hfq/Crc-mediated regulatory elements were present in the intergenic sequences upstream of both pueA and pueB genes. Our results confirmed that both PueA and PueB extracellular enzymes act in concert to degrade Impranil. Furthermore, our data showed that carbon sources in the growth medium directly affected the levels of Impranil-degrading activity but that carbon source effects varied among Pseudomonas strains. This study uncovered an intricate and complicated regulation of P. protegens PU degradation activity controlled by carbon catabolite repression. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON KW - CATABOLITE repression KW - POLYURETHANES KW - PSEUDOMONAS KW - DELETION mutation N1 - Accession Number: 118536491; Chia-Suei Hung 1,2 Sandra Zingarelli 1,2 Nadeau, Lloyd J. 1 Biffinger, Justin C. 3 Drake, Carrie A. 1,2 Crouch, Audra L. 1,2 Barlow, Daniel E. 3 Russell, Jr., John N. 3 Crookes-Goodson, Wendy J. 1; Email Address: wendy.goodson.1@us.af.mil.; Affiliation: 1: Soft Matter Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, USA 2: UES, Inc., Dayton, Ohio, USA 3: Chemistry Division, U.S. Naval Research Laboratory, Washington, DC, USA; Source Info: Oct2016, Vol. 82 Issue 20, p6080; Subject Term: CARBON; Subject Term: CATABOLITE repression; Subject Term: POLYURETHANES; Subject Term: PSEUDOMONAS; Subject Term: DELETION mutation; Number of Pages: 11p; Document Type: Article L3 - 10.1128/AEM.01448-16 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118536491&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Szmulowicz, F. AU - Elhamri, S. AU - Haugan, H. J. AU - Mitchel, W. C. T1 - Hierarchically constrained carrier dynamics in red-LED illuminated type-II InAs/GaSb superlattices. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2016/10/14/ VL - 120 IS - 14 M3 - Article SP - 1 EP - 6 SN - 00218979 AB - We report on positive and negative persistent photo-effects observed in some red light emitting diode (LED)-illuminated type-II InAs/GaSb superlattices (SLs) grown on a p-type GaSb. By analyzing the time dependence of the transverse resistance during and after the illumination, we show that the rise and decay curves are logarithmic, a behavior which points to hierarchically constrained carrier dynamics. Accordingly, negative persistent effects are explained by diffusion and trapping of photo-excited carriers in the p-type buffer layer and their subsequent tunneling back to the SL. On the other hand, positive persistent effects are explained by a low density of majoritycarrier trapping centers in the buffer layer. Hence, persistent photo-effects upon red-LED irradiation provide a diagnostic of the quality of the superlattice-buffer interface. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDIUM arsenide KW - GALLIUM antimonide KW - SUPERLATTICES KW - LIGHT emitting diodes KW - TUNNELING (Physics) KW - PHOTOEXCITATION N1 - Accession Number: 118874017; Szmulowicz, F. 1; Email Address: FrankSzmulowicz@gmail.com Elhamri, S. 2 Haugan, H. J. 3 Mitchel, W. C. 4; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469-0178, USA 2: Department of Physics, University of Dayton, Dayton, Ohio 45469-2314, USA 3: Universal Technology Corporation, Dayton, Ohio 45432, USA 4: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: 2016, Vol. 120 Issue 14, p1; Subject Term: INDIUM arsenide; Subject Term: GALLIUM antimonide; Subject Term: SUPERLATTICES; Subject Term: LIGHT emitting diodes; Subject Term: TUNNELING (Physics); Subject Term: PHOTOEXCITATION; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 6p; Illustrations: 2 Diagrams, 5 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.4964412 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118874017&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gutierrez-Cuevas, Karla G. AU - Wang, Ling AU - Zheng, Zhi-gang AU - Bisoyi, Hari K. AU - Li, Guoqiang AU - Tan, Loon-Seng AU - Vaia, Richard A. AU - Li, Quan T1 - Frequency-Driven Self-Organized Helical Superstructures Loaded with Mesogen-Grafted Silica Nanoparticles. JO - Angewandte Chemie International Edition JF - Angewandte Chemie International Edition Y1 - 2016/10/10/ VL - 55 IS - 42 M3 - Article SP - 13090 EP - 13094 SN - 14337851 AB - Adding colloidal nanoparticles into liquid-crystal media has become a promising pathway either to enhance or to introduce novel properties for improved device performance. Here we designed and synthesized new colloidal hybrid silica nanoparticles passivated with a mesogenic monolayer on the surface to facilitate their organo-solubility and compatibility in a liquid-crystal host. The resulting nanoparticles were identified by 1H NMR spectroscopy, TEM, TGA, and UV/Vis techniques, and the hybrid nanoparticles were doped into a dual-frequency cholesteric liquid-crystal host to appraise both their compatibility with the host and the effect of the doping concentration on their electro-optical properties. Interestingly, the silica-nanoparticle-doped liquid-crystalline nanocomposites were found to be able to dynamically self-organize into a helical configuration and exhibit multi-stability, that is, homeotropic (transparent), focal conic (opaque), and planar states (partially transparent), depending on the frequency applied at sustained low voltage. Significantly, a higher contrast ratio between the transparent state and scattering state was accomplished in the nanoparticle-embedded liquid-crystal systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Angewandte Chemie International Edition is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - COLLOIDAL crystals KW - NANOPARTICLES -- Analysis KW - SOLUBILITY KW - NANOCOMPOSITE materials KW - CHEMICAL reactions KW - frequency dependence KW - helical superstructures KW - liquid crystals KW - self-organization KW - silica nanoparticles KW - tunable transparency N1 - Accession Number: 118553779; Gutierrez-Cuevas, Karla G. 1 Wang, Ling 1 Zheng, Zhi-gang 1 Bisoyi, Hari K. 1 Li, Guoqiang 2 Tan, Loon-Seng 3 Vaia, Richard A. 3 Li, Quan 1; Affiliation: 1: Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University 2: Department of Ophthalmology and Visual Science and Department of Electrical and Computer Engineering, Ohio State University 3: Materials and Manufacturing Directorate, Air Force Research Laboratory; Source Info: 10/10/2016, Vol. 55 Issue 42, p13090; Subject Term: LIQUID crystals; Subject Term: COLLOIDAL crystals; Subject Term: NANOPARTICLES -- Analysis; Subject Term: SOLUBILITY; Subject Term: NANOCOMPOSITE materials; Subject Term: CHEMICAL reactions; Author-Supplied Keyword: frequency dependence; Author-Supplied Keyword: helical superstructures; Author-Supplied Keyword: liquid crystals; Author-Supplied Keyword: self-organization; Author-Supplied Keyword: silica nanoparticles; Author-Supplied Keyword: tunable transparency; Number of Pages: 5p; Document Type: Article L3 - 10.1002/anie.201606895 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118553779&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Golden, E. M. AU - Basun, S. A. AU - Evans, D. R. AU - Grabar, A. A. AU - Stoika, I. M. AU - Giles, N. C. AU - Halliburton, L. E. T1 - Sn vacancies in photorefractive Sn2P2S6 crystals: An electron paramagnetic resonance study of an optically active hole trap. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2016/10/07/ VL - 120 IS - 13 M3 - Article SP - 1 EP - 8 SN - 00218979 AB - Electron paramagnetic resonance (EPR) is used to identify the singly ionized charge state of the Sn vacancy (VSn-) in single crystals of Sn2P2S6 (often referred to as SPS). These vacancies, acting as a hole trap, are expected to be important participants in the photorefractive effect observed in undoped SPS crystals. In as-grown crystals, the Sn vacancies are doubly ionized (VSn2-) with no unpaired spins. They are then converted to a stable EPR-active state when an electron is removed (i.e., a hole is trapped) during an illumination below 100K with 633 nm laser light. The resulting EPR spectrum has g-matrix principal values of 2.0079, 2.0231, and 1.9717. There are resolved hyperfine interactions with two P neighbors and one Sn neighbor. The isotropic portions of these hyperfine matrices are 167 and 79MHz for the two 31P neighbors and 8504 MHz for the one Sn neighbor (this latter value is the average for 117Sn and 119Sn). These VSn- vacancies are shallow acceptors with the hole occupying a diffuse wave function that overlaps the neighboring Sn2+ ion and (P2S6)4- anionic unit. Using a general-order kinetics approach, an analysis of isothermal decay curves of the VSn- EPR spectrum in the 107-115K region gives an activation energy of 283 meV. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON paramagnetic resonance KW - CRYSTALS KW - SULFUR KW - WAVE functions KW - ADDITION polymerization KW - ISOTHERMAL processes N1 - Accession Number: 118704075; Golden, E. M. 1 Basun, S. A. 2,3 Evans, D. R. 3 Grabar, A. A. 4 Stoika, I. M. 4 Giles, N. C. 1 Halliburton, L. E. 2,5; Email Address: Larry.Halliburton@mail.wvu.edu; Affiliation: 1: Department of Engineering Physics, Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Azimuth Corporation, 4027 Colonel Glenn Highway, Suite 230, Beavercreek, Ohio 45431, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 4: Institute of Solid State Physics and Chemistry, Uzhgorod National University, 88 000 Uzhgorod, Ukraine 5: Department of Physics and Astronomy, West Virginia University, Morgantown, West Virginia 26506, USA; Source Info: 10/7/2016, Vol. 120 Issue 13, p1; Subject Term: ELECTRON paramagnetic resonance; Subject Term: CRYSTALS; Subject Term: SULFUR; Subject Term: WAVE functions; Subject Term: ADDITION polymerization; Subject Term: ISOTHERMAL processes; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325320 Pesticide and Other Agricultural Chemical Manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 8p; Illustrations: 1 Diagram, 2 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.4963825 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118704075&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kitjaruwankul, Sunan AU - Khrutto, Channarong AU - Sompornpisut, Pornthep AU - Farmer, B. L. AU - Pandey, R. B. T1 - Asymmetry in structural response of inner and outer transmembrane segments of CorA protein by a coarse-grain model. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2016/10/07/ VL - 145 IS - 13 M3 - Article SP - 1 EP - 7 SN - 00219606 AB - Structure of CorA protein and its inner (i.corA) and outer (o.corA) transmembrane (TM) components are investigated as a function of temperature by a coarse-grained Monte Carlo simulation. Thermal response of i.corA is found to differ considerably from that of the outer component, o.corA. Analysis of the radius of gyration reveals that the inner TM component undergoes a continuous transition from a globular conformation to a random coil structure on raising the temperature. In contrast, the outer transmembrane component exhibits an abrupt (nearly discontinuous) thermal response in a narrow range of temperature. Scaling of the structure factor shows a globular structure of i.corA at a low temperature with an effective dimension D ~ 3 and a random coil at a high temperature with D ~ 2. The residue distribution in o.corA is slightly sparser than that of i.corA in a narrow thermos-responsive regime. The difference in thermos-response characteristics of these components (i.corA and o.corA) may reflect their unique transmembrane functions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTEIN structure KW - MEMBRANE proteins KW - MONTE Carlo method KW - ASYMMETRY (Chemistry) KW - THERMAL analysis N1 - Accession Number: 118716487; Kitjaruwankul, Sunan 1 Khrutto, Channarong 2 Sompornpisut, Pornthep 2; Email Address: pornthep.s@chula.ac.th Farmer, B. L. 3 Pandey, R. B. 4; Affiliation: 1: Faculty of Science at Sriracha, Kasetsart University Sriracha Campus, Chonburi 20230, Thailand 2: Department of Chemistry, Chulalongkorn University, Bangkok 10330, Thailand 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson, Air Force Base, Ohio 45433, USA 4: Department of Physics and Astronomy, University of Southern Mississippi, Hattiesburg, Mississippi 39406, USA; Source Info: 2016, Vol. 145 Issue 13, p1; Subject Term: PROTEIN structure; Subject Term: MEMBRANE proteins; Subject Term: MONTE Carlo method; Subject Term: ASYMMETRY (Chemistry); Subject Term: THERMAL analysis; Number of Pages: 7p; Illustrations: 1 Color Photograph, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.4963807 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118716487&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Murphy, Neil R. AU - Moreno-Tarango, Adbeel J. AU - Ramana, C.V. AU - Sun, Lirong AU - Jones, John G. AU - Grant, John T. T1 - Hybrid co-deposition of molybdenum doped niobium pentoxide (NbxMoyOz) thin films. JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2016/10/05/ VL - 681 M3 - Article SP - 350 EP - 358 SN - 09258388 AB - Mixed valent thin films, consisting of optically absorbing metallic cations within a dielectric matrix, possess a variety of optical and electronic properties that can be tailored through variation of dopant concentration and chemistry. This work details the reactive magnetron co-deposition of mixed valent Nb x Mo y O z thin films, systematically doped with optically absorbing Mo 5+ cations, through adjustment of the molybdenum source power. Control over the concentration the Mo 5+ valence state was achieved through decreases in the oxygen partial pressure facilitated via oxygen chemisorption by the molybdenum sputter flux at power levels of 0, 20, 40, 60, 80, and 100 W, while the Nb source was operated concurrently at a constant sputter power of 200 W. The resulting films, roughly 100 nm in thickness, were characterized using variable angle spectroscopic ellipsometry as well as x-ray photoelectron spectroscopy in order to derive a process-property relationship among molybdenum source power and its effects on the refractive index, extinction coefficient, optical band gap, as influenced by the relative concentrations of Mo 5+ , Mo 6+ , and Nb 5+ cations. Increases in the molybdenum source power from 0 to 100 W allow for tailorability of the refractive index, 2.29 ≤ n 550 ≤ 2.34, extinction coefficient, 0.00 ≤ k 550 ≤ 0.02, and optical band gap, 3.05 ≤ E g ≤ 3.48 eV. The co-deposition procedure used within this work affords the ability to systematically adjust the content of the absorbing Mo 5+ cations, from 0 to 3 at. %, within a dielectric matrix comprised of MoO 3 and Nb 2 O 5 , presenting several opportunities in increasing the design-space for both optical coatings and electrochromic devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROPHORETIC deposition KW - MOLYBDENUM alloys KW - NIOBIUM oxide KW - DOPING agents (Chemistry) KW - THIN films -- Electric properties KW - X-ray photoelectron spectroscopy KW - CHEMICAL vapor deposition KW - Electronic band structure KW - Optical materials KW - Optical properties KW - Oxide materials KW - Thin films KW - Vapor deposition N1 - Accession Number: 115677506; Murphy, Neil R. 1; Email Address: neil.murphy.1@us.af.mil Moreno-Tarango, Adbeel J. 2 Ramana, C.V. 2 Sun, Lirong 3 Jones, John G. 1 Grant, John T. 4; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base (WPAFB), Dayton, OH 45433, USA 2: Department of Mechanical Engineering, University of Texas at El Paso, El Paso, TX 79968, USA 3: General Dynamics Information Technology, 5100 Springfield Street, Dayton, OH 45431, USA 4: Azimuth Corporation, 4027 Colonel Glenn Highway, Beavercreek, OH 45431, USA; Source Info: Oct2016, Vol. 681, p350; Subject Term: ELECTROPHORETIC deposition; Subject Term: MOLYBDENUM alloys; Subject Term: NIOBIUM oxide; Subject Term: DOPING agents (Chemistry); Subject Term: THIN films -- Electric properties; Subject Term: X-ray photoelectron spectroscopy; Subject Term: CHEMICAL vapor deposition; Author-Supplied Keyword: Electronic band structure; Author-Supplied Keyword: Optical materials; Author-Supplied Keyword: Optical properties; Author-Supplied Keyword: Oxide materials; Author-Supplied Keyword: Thin films; Author-Supplied Keyword: Vapor deposition; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jallcom.2016.04.233 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115677506&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Foster, G. M. AU - Faber, G. AU - Yao, Y.-F. AU - Yang, C. C. AU - Heller, E. R. AU - Look, D. C. AU - Brillson, L. J. T1 - Direct measurement of defect and dopant abruptness at high electron mobility ZnO homojunctions. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2016/10/03/ VL - 109 IS - 14 M3 - Article SP - 1 EP - 5 SN - 00036951 AB - Due to a strong Fermi-level mismatch, about 10% of the electrons in a 5-nm-thick highly Ga-doped ZnO (GZO) layer grown by molecular beam epitaxy at 250°C on an undoped ZnO buffer layer transfer to the ZnO (Debye leakage), causing the measured Hall-effect mobility (μH) of the GZO/ZnO combination to remarkably increase from 34 cm²/V s, in thick GZO, to 64 cm²/V s. From previous characterization of the GZO, it is known that ND = [Ga] = 1.04 x 1021 and NA = [VZn] = 1.03 x 1020cm-3, where ND, NA, and [VZn] are the donor, acceptor, and Zn-vacancy concentrations, respectively. In the ZnO, ND = 3.04 x 1019 and NA = 8.10 x 1018 cm-3. Assuming the interface is abrupt, theory predicts μH = 61 cm²/V s, with no adjustable parameters. The assumption of abruptness in [Ga] and [VZn] profiles is confirmed directly with a differential form of depth-resolved cathodoluminescence spectroscopy coupled with X-ray photoelectron spectroscopy. An anneal in Ar at 500°C for 10min somewhat broadens the profiles but causes no appreciable degradation in lH and other electrical properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FERMI level KW - FERMI energy KW - CATHODOLUMINESCENCE KW - PHOTOELECTRON spectroscopy KW - HALL effect N1 - Accession Number: 118683573; Foster, G. M. 1; Email Address: foster.887@buckeyemail.osu.edu Faber, G. 2 Yao, Y.-F. 3 Yang, C. C. 3 Heller, E. R. 4 Look, D. C. 5,6,7 Brillson, L. J. 1,8; Affiliation: 1: Department of Physics, Ohio State University, 191 W. Woodruff Ave., Columbus, Ohio 43210, USA 2: Columbus School for Girls, 56 S. Columbia Ave., Columbus, Ohio 43209, USA 3: Institute of Photonics and Optoelectronics, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan 4: Air Force Research Laboratory Materials and Manufacturing Directorate, 3005 Hobson Way, Wright-Patterson AFB, Ohio 45433, USA 5: Semiconductor Research Center, Wright State University, 3640 Colonel Glenn Hwy., Dayton, Ohio 45435, USA 6: Wyle Laboratories, Inc., 2601 Mission Point Blvd., Dayton, Ohio 45431, USA 7: Air Force Research Laboratory Sensors Directorate, 2241 Avionics Circle, Wright-Patterson AFB, Ohio 45433, USA 8: Department of Electrical and Computer Engineering, Ohio State University, 205 Dreese Lab, 2015 Neil Ave., Columbus, Ohio 43210, USA; Source Info: 10/3/2016, Vol. 109 Issue 14, p1; Subject Term: FERMI level; Subject Term: FERMI energy; Subject Term: CATHODOLUMINESCENCE; Subject Term: PHOTOELECTRON spectroscopy; Subject Term: HALL effect; Number of Pages: 5p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.4963888 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118683573&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CASE AU - Koroscil, Matt AU - Scott, Josh T1 - Wong Type Dermatomyositis Complicated by Interstitial Lung Disease. JO - CHEST JF - CHEST Y1 - 2016/10/02/Oct2016 Supplement VL - 150 M3 - Case Study SP - 485A EP - 485A SN - 00123692 AB - The article presents a case study of a wrong type of dermatomyositis which was complicated by interstitial lung disease in a 39-year-old White male presented to rheumatology clinic with rash, decline in physical endurance, and dry cough. KW - DERMATOMYOSITIS KW - INTERSTITIAL lung diseases KW - DISEASE complications KW - CASE studies N1 - Accession Number: 118540053; Koroscil, Matt 1 Scott, Josh 1; Affiliation: 1: United States Air Force, Beavercreek, OH; Source Info: Oct2016 Supplement, Vol. 150, p485A; Subject Term: DERMATOMYOSITIS; Subject Term: INTERSTITIAL lung diseases; Subject Term: DISEASE complications; Subject Term: CASE studies; Number of Pages: 1p; Document Type: Case Study L3 - 10.1016/j.chest.2016.08.499 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118540053&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CASE AU - Koroscil, Matt AU - Hauser, Timothy T1 - Acute Pulmonary Embolism Leading to Cavitation and Large Pulmonary Abscess: A Rare Complication of Pulmonary Infarction. JO - CHEST JF - CHEST Y1 - 2016/10/02/Oct2016 Supplement VL - 150 M3 - Case Study SP - 1144A EP - 1144A SN - 00123692 AB - The article presents a case study of a 62-year-old male with chest pain and dyspnea who was taken to the emergency department, and was diagnosed with acute pulmonary infarction due to complication of pulmonary embolism. KW - PULMONARY infarction KW - PULMONARY embolism KW - CASE studies N1 - Accession Number: 118541057; Koroscil, Matt 1 Hauser, Timothy 1; Affiliation: 1: United States Air Force, Beavercreek, OH; Source Info: Oct2016 Supplement, Vol. 150, p1144A; Subject Term: PULMONARY infarction; Subject Term: PULMONARY embolism; Subject Term: CASE studies; Number of Pages: 1p; Document Type: Case Study L3 - 10.1016/j.chest.2016.08.1254 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118541057&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - ID - 118540053 T1 - Wong Type Dermatomyositis Complicated by Interstitial Lung Disease. AU - Koroscil, Matt AU - Scott, Josh Y1 - 2016/10/02/Oct2016 Supplement N1 - Accession Number: 118540053. Language: English. Entry Date: In Process. Revision Date: 20161014. Publication Type: Case Study. Supplement Title: Oct2016 Supplement. Journal Subset: Biomedical; Peer Reviewed; USA. NLM UID: 0231335. SP - 485A EP - 485A JO - CHEST JF - CHEST JA - CHEST VL - 150 CY - Glenview, Illinois PB - American College of Chest Physicians SN - 0012-3692 AD - United States Air Force, Beavercreek, OH DO - 10.1016/j.chest.2016.08.499 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=118540053&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - ID - 118541057 T1 - Acute Pulmonary Embolism Leading to Cavitation and Large Pulmonary Abscess: A Rare Complication of Pulmonary Infarction. AU - Koroscil, Matt AU - Hauser, Timothy Y1 - 2016/10/02/Oct2016 Supplement N1 - Accession Number: 118541057. Language: English. Entry Date: In Process. Revision Date: 20161014. Publication Type: Case Study. Supplement Title: Oct2016 Supplement. Journal Subset: Biomedical; Peer Reviewed; USA. NLM UID: 0231335. SP - 1144A EP - 1144A JO - CHEST JF - CHEST JA - CHEST VL - 150 CY - Glenview, Illinois PB - American College of Chest Physicians SN - 0012-3692 AD - United States Air Force, Beavercreek, OH DO - 10.1016/j.chest.2016.08.1254 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=118541057&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Clark Jr., Daniel L. AU - Ha-Rok Bae AU - Gobal, Koorosh AU - Penmetsa, Ravi T1 - Engineering Design Exploration Using Locally Optimized Covariance Kriging. JO - AIAA Journal JF - AIAA Journal Y1 - 2016/10// VL - 54 IS - 10 M3 - Article SP - 3160 EP - 3175 SN - 00011452 AB - Surrogate models are used in many engineering applications where actual function evaluations are computationally expensive. Kriging is a flexible surrogate model best suited for interpolating nonlinear system responses with a limited number of training points. It is commonly used to alleviate the high computational cost associated with design exploration techniques: for example, uncertainty quantification and multidisciplinary design optimization. However, when the underlying function shows varying degrees of nonlinear behavior within a design domain of interest, kriging, with a stationary covariance structure, can result in low-quality predictions and an overly conservative expected mean squared error. This effect is often amplified by data collected adaptively and unevenly during iterative design explorations. In this paper, the locally optimized covariance kriging method is proposed to capture the nonstationarity of the underlying function behavior. In locally optimized covariance kriging, the nonstationary behavior of an underlying function is identified with a statistical test process and approximated by aggregating a finite number of locally optimized stationary covariance structures. Compared to traditional stationary kriging, the proposed method provides an efficient and flexible computational framework capable of capturing transitional system behaviors and imposing physical understanding in building a surrogate model. Practical significance of the proposed method is discussed along with numerical examples. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 118408915; Clark Jr., Daniel L. 1 Ha-Rok Bae 2 Gobal, Koorosh 1 Penmetsa, Ravi 3; Affiliation: 1: Graduate Research Assistant, Department of Mechanical and Materials Engineering, Wright State University, Dayton, Ohio 45435 2: Assistant Professor, Department of Mechanical and Materials Engineering, Wright State University, Dayton, Ohio 45435 3: Senior Mechanical Engineer, Aerospace Systems Directorate, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Oct2016, Vol. 54 Issue 10, p3160; Number of Pages: 16p; Document Type: Article L3 - 10.2514/1.J054860 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118408915&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hallenbeck, P.C. AU - Grogger, M. AU - Mraz, M. AU - Veverka, D. T1 - Solar biofuels production with microalgae. JO - Applied Energy JF - Applied Energy Y1 - 2016/10// VL - 179 M3 - Article SP - 136 EP - 145 SN - 03062619 AB - With impending climate change and ever decreasing supplies of easily extractable fossil fuel, means to produce renewable and sustainable replacement fuels are being sought. Plants or algae appear ideal since they can use sunlight to fix CO 2 into usable fuel or fuel feedstocks. However, as the world population approaches the 10 10 (10 billion) mark, the use of agricultural land to produce fuel instead of food cannot be justified. Microalgal biofuel production is under intense investigation due to its promise as a sustainable, renewable biofuel that can be produced using non-arable land and brackish or non-potable water. Some species accumulate high levels of TAGs (triacylglycerols) that can be converted to fatty acid esters suitable as replacement diesel fuels. However, there are many technical barriers to the practical application of microalgae for biofuel production and thus a number of significant challenges need to be met before microalgal biodiesel production becomes a practical reality. These include developing cost-effective cultivation strategies, low energy requiring harvesting technologies, and energy efficient and sustainable lipid conversion technologies. The large culture volumes that will be necessary dictate that the necessary nutrients come from wastewaters, such as the effluents from secondary treatment of sewage. Economical and energy sparing harvesting will require the development of novel flocculation or floatation strategies and new methods of oil extraction/catalysis that avoid the extensive use of solvents. Recent advances in these critical areas are reviewed and some of the possible strategies for moving forward are outlined. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Energy is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOMASS energy KW - MICROALGAE KW - CLIMATIC changes KW - FOSSIL fuels KW - RENEWABLE energy sources KW - TRIGLYCERIDES KW - Biodiesel KW - Biofuels KW - Hydrogen KW - Methane digestion KW - Microalgae KW - Pyrolysis N1 - Accession Number: 117735330; Hallenbeck, P.C. 1; Email Address: patrick.hallenbeck.ctr@usafa.edu Grogger, M. 1 Mraz, M. 1 Veverka, D. 1; Affiliation: 1: Life Sciences Research Center, Department of Biology, United States Air Force Academy, 2355 Faculty Drive, USAF Academy, CO 80840, USA; Source Info: Oct2016, Vol. 179, p136; Subject Term: BIOMASS energy; Subject Term: MICROALGAE; Subject Term: CLIMATIC changes; Subject Term: FOSSIL fuels; Subject Term: RENEWABLE energy sources; Subject Term: TRIGLYCERIDES; Author-Supplied Keyword: Biodiesel; Author-Supplied Keyword: Biofuels; Author-Supplied Keyword: Hydrogen; Author-Supplied Keyword: Methane digestion; Author-Supplied Keyword: Microalgae; Author-Supplied Keyword: Pyrolysis; NAICS/Industry Codes: 221117 Biomass Electric Power Generation; NAICS/Industry Codes: 221119 Other electric power generation; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.apenergy.2016.06.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117735330&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Merkel, Cory AU - Hasan, Raqibul AU - Soures, Nicholas AU - Kudithipudi, Dhireesha AU - Taha, Tarek AU - Agarwal, Sapan AU - Marinella, Matthew T1 - Neuromemristive Systems: Boosting Efficiency through Brain-Inspired Computing. JO - Computer (00189162) JF - Computer (00189162) Y1 - 2016/10// VL - 49 IS - 10 M3 - Article SP - 56 EP - 64 SN - 00189162 AB - Neuromemristive systems (NMSs) are gaining traction as an alternative to conventional CMOS-based von Neumann systems because of their greater energy and area efficiency. A proposed NMS accelerator for machine-learning tasks reduced power dissipation by five orders of magnitude, relative to a multicore reduced-instruction set computing processor. [ABSTRACT FROM AUTHOR] AB - Copyright of Computer (00189162) is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MACHINE learning KW - ENERGY dissipation KW - MICROPROCESSORS KW - HIGH performance computing KW - COMPUTER systems KW - brain-inspired computing KW - Energy efficiency KW - energy-efficient computing KW - energy-efficient systems KW - high-performance computing KW - Low power electronics KW - low-power design KW - memristors KW - Multicore processing KW - neural network architecture KW - Neural networks KW - Neuromemristive systems KW - neuromorphic systems KW - Neurons KW - power management KW - Power system management KW - Random access memory KW - Switches N1 - Accession Number: 119013855; Merkel, Cory 1 Hasan, Raqibul 2 Soures, Nicholas 3 Kudithipudi, Dhireesha 3 Taha, Tarek 4 Agarwal, Sapan 5 Marinella, Matthew 5; Affiliation: 1: US Air Force Research Laboratory 2: Laboratory for Physical Sciences 3: Rochester Institute of Technology 4: University of Dayton 5: Sandia National Laboratories; Source Info: Oct2016, Vol. 49 Issue 10, p56; Subject Term: MACHINE learning; Subject Term: ENERGY dissipation; Subject Term: MICROPROCESSORS; Subject Term: HIGH performance computing; Subject Term: COMPUTER systems; Author-Supplied Keyword: brain-inspired computing; Author-Supplied Keyword: Energy efficiency; Author-Supplied Keyword: energy-efficient computing; Author-Supplied Keyword: energy-efficient systems; Author-Supplied Keyword: high-performance computing; Author-Supplied Keyword: Low power electronics; Author-Supplied Keyword: low-power design; Author-Supplied Keyword: memristors; Author-Supplied Keyword: Multicore processing; Author-Supplied Keyword: neural network architecture; Author-Supplied Keyword: Neural networks; Author-Supplied Keyword: Neuromemristive systems; Author-Supplied Keyword: neuromorphic systems; Author-Supplied Keyword: Neurons; Author-Supplied Keyword: power management; Author-Supplied Keyword: Power system management; Author-Supplied Keyword: Random access memory; Author-Supplied Keyword: Switches; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); NAICS/Industry Codes: 541512 Computer Systems Design Services; Number of Pages: 9p; Document Type: Article L3 - 10.1109/MC.2016.312 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119013855&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Ryan T1 - Threatcasting. JO - Computer (00189162) JF - Computer (00189162) Y1 - 2016/10// VL - 49 IS - 10 M3 - Article SP - 94 EP - 95 SN - 00189162 AB - Threatcasting and science fiction intersect when people begin to consider the future and hold conversations about the threats we might encounter. [ABSTRACT FROM AUTHOR] AB - Copyright of Computer (00189162) is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPILING (Electronic computers) KW - AUTOMATIC programming (Computer science) KW - COMPILERS (Computer programs) KW - SCIENCE fiction KW - INTERPERSONAL relations KW - education KW - futurecasting KW - military KW - Science Fiction Prototyping KW - Technology forecasting KW - threatcasting N1 - Accession Number: 119013842; Lee, Ryan 1; Affiliation: 1: US Air Force Academy; Source Info: Oct2016, Vol. 49 Issue 10, p94; Subject Term: COMPILING (Electronic computers); Subject Term: AUTOMATIC programming (Computer science); Subject Term: COMPILERS (Computer programs); Subject Term: SCIENCE fiction; Subject Term: INTERPERSONAL relations; Author-Supplied Keyword: education; Author-Supplied Keyword: futurecasting; Author-Supplied Keyword: military; Author-Supplied Keyword: Science Fiction Prototyping; Author-Supplied Keyword: Technology forecasting; Author-Supplied Keyword: threatcasting; Number of Pages: 2p; Document Type: Article L3 - 10.1109/MC.2016.305 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119013842&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Lauria, Michael J AU - Rush, Stephen AU - Weingart, Scott D AU - Brooks, Jason AU - Gallo, Isabelle A T1 - Potential role for psychological skills training in emergency medicine: Part 1 - Introduction and background. JO - Emergency Medicine Australasia JF - Emergency Medicine Australasia Y1 - 2016/10// VL - 28 IS - 5 M3 - Other SP - 607 EP - 610 SN - 17426731 AB - Psychological skills training (PST) is the systematic acquisition and practice of different psychological techniques to improve cognitive and technical performance. This training consists of three phases: education, skills acquisition and practice. Some of the psychological skills developed in this training include relaxation techniques, focusing and concentration skills, positive 'self-suggestion' and visualisation exercises. Since the middle of the 20th century, PST has been successfully applied by athletes, performing artists, business executives, military personnel and other professionals in high-risk occupations. Research in these areas has demonstrated the breadth and depth of the training's effectiveness. Despite the benefits realised in other professions, medicine has only recently begun to explore certain elements of PST. The present paper reviews the history and evidence behind the concept of PST. In addition, it presents some aspects of PST that have already been incorporated into medical training as well as implications for developing more comprehensive programmes to improve delivery of emergency medical care. [ABSTRACT FROM AUTHOR] AB - Copyright of Emergency Medicine Australasia is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABILITY KW - COGNITIVE therapy KW - CONTINUING education KW - EMERGENCY medical services KW - EMERGENCY medicine KW - PSYCHOLOGY of movement KW - RESUSCITATION KW - VISUALIZATION KW - TRAINING KW - MINDFULNESS (Psychology) KW - emergency medicine KW - performance psychology KW - psychological skills training KW - resuscitation KW - stress performance N1 - Accession Number: 118221496; Lauria, Michael J 1 Rush, Stephen 2 Weingart, Scott D 3 Brooks, Jason 4 Gallo, Isabelle A 5; Affiliation: 1: Geisel School of Medicine, Dartmouth College 2: United States Air Force Pararescue, 103 Rescue Squadron, Gabreski Air Base 3: Department of Emergency Medicine, Stony Brook University Hospital 4: Department of Emergency Medicine, University of Manitoba 5: Hofstra University; Source Info: Oct2016, Vol. 28 Issue 5, p607; Subject Term: ABILITY; Subject Term: COGNITIVE therapy; Subject Term: CONTINUING education; Subject Term: EMERGENCY medical services; Subject Term: EMERGENCY medicine; Subject Term: PSYCHOLOGY of movement; Subject Term: RESUSCITATION; Subject Term: VISUALIZATION; Subject Term: TRAINING; Subject Term: MINDFULNESS (Psychology); Author-Supplied Keyword: emergency medicine; Author-Supplied Keyword: performance psychology; Author-Supplied Keyword: psychological skills training; Author-Supplied Keyword: resuscitation; Author-Supplied Keyword: stress performance; NAICS/Industry Codes: 611430 Professional and Management Development Training; NAICS/Industry Codes: 624230 Emergency and Other Relief Services; NAICS/Industry Codes: 913130 Municipal police services; Number of Pages: 4p; Document Type: Other L3 - 10.1111/1742-6723.12606 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118221496&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN ID - 118221496 T1 - Potential role for psychological skills training in emergency medicine: Part 1 - Introduction and background. AU - Lauria, Michael J AU - Rush, Stephen AU - Weingart, Scott D AU - Brooks, Jason AU - Gallo, Isabelle A Y1 - 2016/10// N1 - Accession Number: 118221496. Language: English. Entry Date: 20161005. Revision Date: 20161005. Publication Type: Other. Journal Subset: Australia & New Zealand; Biomedical; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed. Special Interest: Psychiatry/Psychology. NLM UID: 101199824. KW - Psychomotor Performance KW - Education, Continuing KW - Resuscitation KW - Emergency Care KW - Emergency Medicine KW - Cognitive Therapy KW - Guided Imagery KW - Skill Acquisition KW - Mindfulness SP - 607 EP - 610 JO - Emergency Medicine Australasia JF - Emergency Medicine Australasia JA - EMERG MED AUSTRALAS VL - 28 IS - 5 CY - Malden, Massachusetts PB - Wiley-Blackwell SN - 1742-6731 AD - Geisel School of Medicine, Dartmouth College AD - United States Air Force Pararescue, 103 Rescue Squadron, Gabreski Air Base AD - Department of Emergency Medicine, Stony Brook University Hospital AD - Department of Emergency Medicine, University of Manitoba AD - Hofstra University DO - 10.1111/1742-6723.12606 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=118221496&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Kang, Bosung AU - Monga, Vishal AU - Rangaswamy, Muralidhar AU - Abramovich, Yuri T1 - Expected likelihood approach for determining constraints in covariance estimation. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2016/10// VL - 52 IS - 5 M3 - Article SP - 2139 EP - 2156 SN - 00189251 AB - Recent covariance estimation methods for radar space-time adaptive processing exploit practical constraints such as the rank of clutter subspace and the condition number of disturbance covariance to estimate accurate covariance even when training is not generous. While rank and condition number are very effective constraints, often practical nonidealities make it difficult to know them precisely using physical models. Therefore, we propose a method to determine constraints in covariance estimation for radar space-time adaptive processing via an expected likelihood approach. We analyze three cases of constraints: 1) a rank constraint, 2) both rank and noise power constraints, and 3) a condition number constraint. In each case, we formulate precise constraint determination as an optimization problem. For each of the three cases, we derive new analytical results which allow for computationally efficient, practical ways of determining these constraints with formal proofs. Through experimental results from a simulation model and the KASSPER data set, we show that the estimator with optimal constraints obtained by the expected likelihood approach outperforms state-of-the-art alternatives. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COVARIANCE matrices KW - ESTIMATION theory KW - LIKELIHOOD ratio tests KW - RADAR -- Research KW - SPACE-time mathematical models KW - CONSTRAINTS (Physics) KW - Clutter KW - Covariance matrices KW - Maximum likelihood estimation KW - Optimization KW - Radar KW - Training N1 - Accession Number: 120763701; Kang, Bosung 1 Monga, Vishal 1 Rangaswamy, Muralidhar 2 Abramovich, Yuri 3; Affiliation: 1: Pennsylvania State University University Park, PA, USA 2: Air Force Research Laboratory Sensors Directorate Wright-Patterson Air Force Base, OH, USA 3: WR Systems Fairfax, VA, USA; Source Info: Oct2016, Vol. 52 Issue 5, p2139; Subject Term: COVARIANCE matrices; Subject Term: ESTIMATION theory; Subject Term: LIKELIHOOD ratio tests; Subject Term: RADAR -- Research; Subject Term: SPACE-time mathematical models; Subject Term: CONSTRAINTS (Physics); Author-Supplied Keyword: Clutter; Author-Supplied Keyword: Covariance matrices; Author-Supplied Keyword: Maximum likelihood estimation; Author-Supplied Keyword: Optimization; Author-Supplied Keyword: Radar; Author-Supplied Keyword: Training; Number of Pages: 18p; Document Type: Article L3 - 10.1109/TAES.2016.150819 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120763701&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jones, Aaron M. AU - Rigling, Brian AU - Rangaswamy, Muralidhar T1 - Signal-to-interference-plus- noise-ratio analysis for constrained radar waveforms. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2016/10// VL - 52 IS - 5 M3 - Article SP - 2230 EP - 2241 SN - 00189251 AB - To fully appreciate the benefits of arbitrary waveform design capability for transmit adaptive systems, the trade space between constraints (employed to increase the measure of practicality for radar) and the usual performance driver (signal-to-interference-plus-noise ratio) needs to be better defined and understood.We address this issue by developing performance models for radar waveforms with cumulative-modulus and energy constraints. Radar waveforms typically require a constant-modulus (constant-amplitude) transmit signal to efficiently exploit the available transmit power. However, recent hardware advances and the capability for arbitrary (phase and amplitude) designed waveforms have forced a reexamination of this assumption in order to quantify the impact of the nonconstant modulus property.We develop performance models for the signal-to-interference-plus-noise ratio as a function of the cumulative modulus for a random colored interference environment and validate the models against measured data. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIGNAL-to-noise ratio KW - RADAR -- Interference KW - WAVE analysis KW - CONSTRAINTS (Physics) KW - SIGNAL processing KW - Adaptation models KW - Data models KW - Degradation KW - Interference KW - Peak to average power ratio KW - Radar KW - Signal to noise ratio N1 - Accession Number: 120763708; Jones, Aaron M. 1 Rigling, Brian 2 Rangaswamy, Muralidhar 1; Affiliation: 1: Sensor Directorate, Air Force Research Laboratory Wright-Patterson Air Force Base, OH, USA 2: Wright State University Dayton, OH, USA; Source Info: Oct2016, Vol. 52 Issue 5, p2230; Subject Term: SIGNAL-to-noise ratio; Subject Term: RADAR -- Interference; Subject Term: WAVE analysis; Subject Term: CONSTRAINTS (Physics); Subject Term: SIGNAL processing; Author-Supplied Keyword: Adaptation models; Author-Supplied Keyword: Data models; Author-Supplied Keyword: Degradation; Author-Supplied Keyword: Interference; Author-Supplied Keyword: Peak to average power ratio; Author-Supplied Keyword: Radar; Author-Supplied Keyword: Signal to noise ratio; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TAES.2016.150511 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120763708&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stinco, Pietro AU - Greco, Maria S. AU - Gini, Fulvio AU - Himed, Braham T1 - IEEE 802.22 passive radars: multistatic detection and velocity profiler. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2016/10// VL - 52 IS - 5 M3 - Article SP - 2298 EP - 2313 SN - 00189251 AB - This work focuses on a passive coherent location (PCL) system that exploits the signals emitted by IEEE 802.22 devices, referred hereafter as a white-space PCL (WS-PCL) system. To cope with the very low transmitted equivalent isotropically radiated power of the IEEE 802.22 emitters, we focus on the design of a WS-PCL system that exploits all the useful signals, emitted from both the base station and customer-premises equipment, received in each frame. In this work, we study the feasibility of a WS-PCL system by deriving the receiver operating characteristic and defining the multistatic velocity profiling algorithm for the estimation of the target velocity vector. The performance of the proposed receiver is compared to that of a WS-PCL system that exploits only the signal emitted by the base station. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PASSIVE radar KW - SPEED of sound KW - SIGNAL processing KW - IEEE 802 standard KW - RADIO frequency modulation KW - Frequency modulation KW - IEEE 802.22 Standard KW - Indexes KW - OFDM KW - Radar KW - Receivers KW - Surveillance N1 - Accession Number: 120763713; Stinco, Pietro 1 Greco, Maria S. 1 Gini, Fulvio 1 Himed, Braham 2; Affiliation: 1: University of Pisa Pisa, Italy 2: Air Force Research Laboratory Wright-Patterson Air Force Base OH, USA; Source Info: Oct2016, Vol. 52 Issue 5, p2298; Subject Term: PASSIVE radar; Subject Term: SPEED of sound; Subject Term: SIGNAL processing; Subject Term: IEEE 802 standard; Subject Term: RADIO frequency modulation; Author-Supplied Keyword: Frequency modulation; Author-Supplied Keyword: IEEE 802.22 Standard; Author-Supplied Keyword: Indexes; Author-Supplied Keyword: OFDM; Author-Supplied Keyword: Radar; Author-Supplied Keyword: Receivers; Author-Supplied Keyword: Surveillance; Number of Pages: 16p; Document Type: Article L3 - 10.1109/TAES.2016.150363 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120763713&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grabowski, Chris AU - Degnan, James H. AU - Parker, Jerald V. AU - Camacho, J. Frank AU - Coffey, Sean K. AU - Delaney, Rachel K. AU - Domonkos, Matthew T. AU - Intrator, Thomas P. AU - Lynn, Alan G. AU - McCullough, John AU - Ruden, Edward L. AU - Sommars, Wayne AU - Weber, Thomas E. AU - Wurden, Glen A. T1 - Parallel Triggering and Conduction of Rail-Gap Switches in a High-Current Low-Inductance Crowbar Switch. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2016/10//Oct2016 Part 1 VL - 44 IS - 10, Part 1 M3 - Article SP - 1997 EP - 2012 SN - 00933813 AB - The field-reversed configuration heating experiment (FRCHX) was designed to form closed-field-line magnetized target plasmas for magnetoinertial fusion and other high energy density plasma research. These plasmas are in a field-reversed configuration and are formed via a reversed-field theta pinch on an already magnetized background plasma. To extend the duration and temporal uniformity of the pinch, the capacitor bank driving the reversed-field discharge is crowbarred near the current peak. Four parallel rail-gap switches are used on the FRCHX for this application to ensure a low-inductance crowbar discharge path and to accommodate the large magnitude of the discharge current (often greater than 1 MA). Historically, parallel operation of spark gap switches in a crowbarring arrangement has often proved to be difficult due to the very low voltage present on the bank and across the switches at the time of peak current. In a low-inductance design, triggering can be further complicated by the rapid collapse of what little voltage there is across the switches as soon as the first spark gap begins conduction. This paper reports on the efforts that were made to develop a low-inductance crowbar switch for the FRCHX and to ultimately enable successful triggering and operation of the four parallel rail-gap switches used in the crowbar. The design of the low-inductance parallel switch assembly is presented first, followed by a description of the triggering scheme employed to ensure conduction of all four switches. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC switchgear KW - ENERGY density KW - CAPACITORS KW - ELECTRIC inductance KW - ELECTRIC currents KW - Capacitors KW - Discharges (electric) KW - Electrodes KW - Inductance KW - Plasma devices KW - Plasmas KW - pulse power system switches KW - spark gaps KW - Sparks KW - trigger circuits KW - triggering N1 - Accession Number: 118689548; Grabowski, Chris 1 Degnan, James H. 2 Parker, Jerald V. 3 Camacho, J. Frank 3 Coffey, Sean K. 1 Delaney, Rachel K. 4 Domonkos, Matthew T. 2 Intrator, Thomas P. 5 Lynn, Alan G. 6 McCullough, John 2 Ruden, Edward L. 2 Sommars, Wayne 3 Weber, Thomas E. 5 Wurden, Glen A. 5; Affiliation: 1: Sandia National Laboratories, Albuquerque, NM, USA 2: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, NM, USA 3: Leidos, Inc., Albuquerque, NM, USA 4: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, NM, USA 5: Los Alamos National Laboratory, Magnetized Plasma Team, Los Alamos, NM, USA 6: Naval Research Laboratory, Plasma Physics Division, Washington, DC, USA; Source Info: Oct2016 Part 1, Vol. 44 Issue 10, Part 1, p1997; Subject Term: ELECTRIC switchgear; Subject Term: ENERGY density; Subject Term: CAPACITORS; Subject Term: ELECTRIC inductance; Subject Term: ELECTRIC currents; Author-Supplied Keyword: Capacitors; Author-Supplied Keyword: Discharges (electric); Author-Supplied Keyword: Electrodes; Author-Supplied Keyword: Inductance; Author-Supplied Keyword: Plasma devices; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: pulse power system switches; Author-Supplied Keyword: spark gaps; Author-Supplied Keyword: Sparks; Author-Supplied Keyword: trigger circuits; Author-Supplied Keyword: triggering; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 335930 Wiring device manufacturing; NAICS/Industry Codes: 335931 Current-Carrying Wiring Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 335315 Switchgear and switchboard, and relay and industrial control apparatus manufacturing; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 335313 Switchgear and Switchboard Apparatus Manufacturing; Number of Pages: 16p; Document Type: Article L3 - 10.1109/TPS.2016.2572062 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118689548&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Garcia, Eloy AU - Casbeer, David W. AU - Yongcan Cao T1 - Decentralised event-triggered consensus of double integrator multi-agent systems with packet losses and communication delays. JO - IET Control Theory & Applications JF - IET Control Theory & Applications Y1 - 2016/10// VL - 10 IS - 15 M3 - Article SP - 1835 EP - 1843 PB - Institution of Engineering & Technology SN - 17518644 AB - The event-triggered consensus problem with agents described by double integrator dynamics is addressed in this study. The authors consider the problem of non-consistent packet losses where the broadcast channel from one agent to its neighbours can drop the event-triggered packets of information, where the transmitting agent is unaware that the packet was not received and the receiving agents have no knowledge of the transmitted packet. They also consider the constraints associated with communication delays. In this study, they consider directed graphs, and they also relax the consistency on the packet dropouts and the delays. By relaxing the consistency they allow the dropouts and delays for a packet broadcast by one agent to be different for each receiving node. Under these constraints, an event-triggered consensus protocol is designed for the agents to achieve consensus asymptotically while reducing transmissions of measurements. In addition, positive inter-event times are obtained which guarantee that Zeno behaviour does not occur. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Control Theory & Applications is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIAGENT systems KW - DATA packets & packeting KW - PACKET switching (Data transmission) KW - MATHEMATICAL models KW - BROADCAST channels KW - TIME delay systems KW - BANDWIDTHS N1 - Accession Number: 118460083; Garcia, Eloy 1,2 Casbeer, David W. 2 Yongcan Cao 3; Affiliation: 1: Infoscitex Corp. Dayton, OH 45431, USA. 2: Control Science Center of Excellence, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA. 3: Department of Electrical and Computer Engineering, University of Texas at San Antonio, San Antonio, TX 78249, USA.; Source Info: 2016, Vol. 10 Issue 15, p1835; Subject Term: MULTIAGENT systems; Subject Term: DATA packets & packeting; Subject Term: PACKET switching (Data transmission); Subject Term: MATHEMATICAL models; Subject Term: BROADCAST channels; Subject Term: TIME delay systems; Subject Term: BANDWIDTHS; Number of Pages: 9p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1049/iet-cta.2016.0107 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118460083&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hanchak, M.S. AU - Vangsness, M.D. AU - Ervin, J.S. AU - Byrd, L.W. T1 - Transient measurement of thin liquid films using a Shack–Hartmann sensor. JO - International Communications in Heat & Mass Transfer JF - International Communications in Heat & Mass Transfer Y1 - 2016/10// VL - 77 M3 - Article SP - 100 EP - 103 SN - 07351933 AB - A Shack–Hartmann (SH) wavefront sensor was used to measure the thickness of thin liquid films of n–octane on silicon substrates. A SH device consists of an array of microlenses spaced from an image sensor by their effective focal length. A planar wavefront imposed on a SH device would produce uniformly spaced foci on the sensor for each lenslet. A distorted wavefront would then shift the foci by a calculable amount. Typically used for optical system alignment and calibration, the SH device was coupled with magnifying optics to determine the distortion of a planar wavefront source upon refraction through a film and reflection by a polished substrate. Geometrical optics, in the form of ray transfer matrices, were used to determine the location and orientation of rays emanating from the film surface given their positions and angles recorded by the SH device. The SH foci movements were translated into sample coordinates and film slopes, which were subsequently integrated to produce the film profile. [ABSTRACT FROM AUTHOR] AB - Copyright of International Communications in Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID films KW - RESEARCH KW - IMAGE sensors KW - TRANSFER matrix KW - MICROLENSES KW - FOCUS (Optics) KW - Film thickness KW - Meniscus KW - Shack-Hartmann KW - Thin film N1 - Accession Number: 117837351; Hanchak, M.S. 1; Email Address: michael.hanchak@udri.udayton.edu Vangsness, M.D. 1 Ervin, J.S. 1 Byrd, L.W. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469, USA 2: Air Force Research Laboratory, WPAFB, OH 45433, USA; Source Info: Oct2016, Vol. 77, p100; Subject Term: LIQUID films; Subject Term: RESEARCH; Subject Term: IMAGE sensors; Subject Term: TRANSFER matrix; Subject Term: MICROLENSES; Subject Term: FOCUS (Optics); Author-Supplied Keyword: Film thickness; Author-Supplied Keyword: Meniscus; Author-Supplied Keyword: Shack-Hartmann; Author-Supplied Keyword: Thin film; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.icheatmasstransfer.2016.07.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117837351&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kleiser, Geremy AU - Revil-Baudard, Benoit AU - Pasiliao, Crystal L. T1 - High strain-rate plastic deformation of molybdenum: Experimental investigation, constitutive modeling and validation using impact tests. JO - International Journal of Impact Engineering JF - International Journal of Impact Engineering Y1 - 2016/10// VL - 96 M3 - Article SP - 116 EP - 128 SN - 0734743X AB - In this paper, an experimental study on the quasi-static behavior and dynamic behavior of a polycrystalline molybdenum material is presented. Due to the material's limited tensile ductility, successfully acquiring data for impact conditions is very challenging. For the first time, Taylor impact tests were successfully conducted on this material for impact velocities in the range of 140–165 m/s. For impact velocities beyond this range, the very high tensile pressures generated in the specimen immediately after impact lead to failure. A constitutive model accounting for the key features of the Mo plastic behavior, i.e. its tension–compression asymmetry and plastic anisotropy was developed. An implicit solver was used to simulate the impact deformation. A good agreement was obtained between predictions and experimental outlines of the specimens. Furthermore, it was shown that the model can be used to gain understanding of the dynamic deformation process in terms of time evolution of the pressure, the extent of the plastically deformed zone, distribution of the local plastic strain rates, and when the transition to quasi-stable deformation occurs. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Impact Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLYBDENUM KW - POLYCRYSTALS KW - STRAINS & stresses (Mechanics) KW - PLASTICITY KW - IMPACT (Mechanics) KW - TENSILE strength KW - DUCTILITY KW - Constitutive modeling KW - Finite element simulation KW - Polycrystalline molybdenum KW - Taylor impact tests N1 - Accession Number: 116429875; Kleiser, Geremy 1,2 Revil-Baudard, Benoit 1; Email Address: revil@ufl.edu Pasiliao, Crystal L. 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, University of Florida, REEF, 1350 N. Poquito Rd., Shalimar, FL 32579, USA 2: Air Force Research Laboratory, Eglin, FL 32542, USA; Source Info: Oct2016, Vol. 96, p116; Subject Term: MOLYBDENUM; Subject Term: POLYCRYSTALS; Subject Term: STRAINS & stresses (Mechanics); Subject Term: PLASTICITY; Subject Term: IMPACT (Mechanics); Subject Term: TENSILE strength; Subject Term: DUCTILITY; Author-Supplied Keyword: Constitutive modeling; Author-Supplied Keyword: Finite element simulation; Author-Supplied Keyword: Polycrystalline molybdenum; Author-Supplied Keyword: Taylor impact tests; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.ijimpeng.2016.05.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116429875&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - THOMPSON, STEPHEN T1 - Positioning airports for safety management system success. JO - Journal of Airport Management JF - Journal of Airport Management Y1 - 2016///Autumn/Fall2016 VL - 10 IS - 4 M3 - Article SP - 334 EP - 342 SN - 17501938 AB - Safety management systems (SMS) offer airports a new structure and set of tools that enable the enhancement of current safety programmes and facilitate the implementation of initiatives to improve public and employee safety. Whether anticipating future regulatory guidance or voluntarily capitalising on the new methodology, airport operators can position themselves for SMS success. By cultivating stakeholder relationships, proactively managing risk, and maximising the use of available data, airports can realise the scalable advantages of SMS. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Airport Management is the property of Henry Stewart Publications LLP and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPORTS -- Safety measures KW - AIRPORTS -- Management KW - INDUSTRIAL safety KW - PUBLIC safety KW - AIRLINE industry KW - risk management KW - safety KW - safety management system KW - SMS N1 - Accession Number: 119586339; THOMPSON, STEPHEN 1,2,3; Email Address: stephen.thompson@flydenver.com; Affiliation: 1: Denver International Airport 2: Graduate of the US Air Force Academy 3: Master's degree in management from Webster University; Source Info: Autumn/Fall2016, Vol. 10 Issue 4, p334; Subject Term: AIRPORTS -- Safety measures; Subject Term: AIRPORTS -- Management; Subject Term: INDUSTRIAL safety; Subject Term: PUBLIC safety; Subject Term: AIRLINE industry; Author-Supplied Keyword: risk management; Author-Supplied Keyword: safety; Author-Supplied Keyword: safety management system; Author-Supplied Keyword: SMS; NAICS/Industry Codes: 481110 Scheduled air transportation; NAICS/Industry Codes: 481111 Scheduled Passenger Air Transportation; NAICS/Industry Codes: 488119 Other Airport Operations; Number of Pages: 9p; Illustrations: 2 Black and White Photographs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119586339&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kaszynski, Alexander A. AU - Beck, Joseph A. AU - Brown, Jeffrey M. T1 - Harmonic Convergence Estimation Through Strain Energy Superconvergence. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2016/10// VL - 138 IS - 10 M3 - Article SP - 1 EP - 9 SN - 07424795 AB - Grid convergence in finite element analysis (FEA), despite a wide variety of tools available to date, remains an elusive and challenging task. Due to the complex and time-consuming process of remeshing and solving the finite element model (FEM), convergence studies can be a part of the most arduous portion of the modeling process and can even be impossible with FEMs unassociated with CAD. Existing a posteriori methods, such as relative error in the energy norm, provide a near arbitrary indication of the model convergence for eigenfrequencies. This paper proposes a new approach to evaluate the harmonic convergence of an existing model without conducting a convergence study. Strain energy superconvergence (SES) takes advantage of superconvergence points within a FEM and accurately recovers the strain energy within the model using polyharmonic splines, thus providing a more accurate estimate of the system's eigenfrequencies without modification of the FEM. Accurate eigenfrequencies are critical for designing for airfoil resonance avoidance and mistuned rotor response prediction. Traditional error estimation strategies fail to capture harmonic convergence as effectively as SES, potentially leading to a less accurate airfoil resonance and rotor mistuning prediction. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Displacement KW - Errors KW - Finite element analysis KW - Finite element model KW - Interpolation KW - Shapes KW - Splines N1 - Accession Number: 121316939; Kaszynski, Alexander A. 1; Email Address: akascap@gmail.com Beck, Joseph A. 2 Brown, Jeffrey M. 2; Affiliation: 1: Universal Technology Corporation, Dayton, OH 45434 2: Turbine Engine Division, U.S. Air Force Research Laboratory, Wright-Patterson AFB, OH 45431; Source Info: Oct2016, Vol. 138 Issue 10, p1; Author-Supplied Keyword: Displacement; Author-Supplied Keyword: Errors; Author-Supplied Keyword: Finite element analysis; Author-Supplied Keyword: Finite element model; Author-Supplied Keyword: Interpolation; Author-Supplied Keyword: Shapes; Author-Supplied Keyword: Splines; Number of Pages: 9p; Document Type: Article L3 - 10.1115/1.4033059 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121316939&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Steenbergen, E.H. AU - Massengale, J.A. AU - Ariyawansa, G. AU - Zhang, Y.-H. T1 - Evidence of carrier localization in photoluminescence spectroscopy studies of mid-wavelength infrared InAs/InAs1−xSbx type-II superlattices. JO - Journal of Luminescence JF - Journal of Luminescence Y1 - 2016/10// VL - 178 M3 - Article SP - 451 EP - 456 SN - 00222313 AB - The temperature-dependent and excitation-dependent photoluminescence (PL) spectroscopy characterization of mid-wavelength infrared InAs/InAs 1− x Sb x type-II superlattices reveals evidence of carrier localization. Carrier localization is apparent in the 8 meV PL peak position blue shift from 4 K to 60 K while the peak full-width-at-half-maximum is non-monotonic, peaking at 25 K before increasing above 60 K. In addition, competition between two recombination processes is evident in the temperature-dependent behavior of the PL peak integrated intensity under low excitation conditions: the intensity decreases from 4 K to 80 K, increases from 80 K to 160 K, and decreases above 160 K. Excitation-dependent PL studies reveal the dominant recombination mechanism changes from free-to-bound or donor–acceptor-like recombination to excitonic or band-to-band recombination at ~60 K. These findings suggest that carrier localization is occurring below 60 K, and the confined carriers are holes as these are unintentionally doped n -type superlattices. The localization potentials are due to variations in the InAs 1− x Sb x composition, the interfaces, and the InAs and InAs 1− x Sb x layer widths. The width of a Gaussian distribution used to describe the density of states of the band tails due to carrier localization potentials ranges from 2 meV–4 meV. The larger energy corresponds to the smaller period superlattices, indicating the interface compositional variation is more prominent and creates larger localization potentials than in the longer period superlattices. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Luminescence is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDIUM arsenide KW - LUMINESCENCE spectroscopy KW - SUPERLATTICES KW - TEMPERATURE effect KW - ANTIMONIDES KW - InAs/InAsSb KW - Infrared KW - Localization KW - Photoluminescence KW - Superlattice N1 - Accession Number: 118151703; Steenbergen, E.H. 1; Email Address: Elizabeth.Steenbergen.1@us.af.mil Massengale, J.A. 1 Ariyawansa, G. 2 Zhang, Y.-H. 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson Air Force Base, OH 45433, USA 3: Center for Photonics Innovation and School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA; Source Info: Oct2016, Vol. 178, p451; Subject Term: INDIUM arsenide; Subject Term: LUMINESCENCE spectroscopy; Subject Term: SUPERLATTICES; Subject Term: TEMPERATURE effect; Subject Term: ANTIMONIDES; Author-Supplied Keyword: InAs/InAsSb; Author-Supplied Keyword: Infrared; Author-Supplied Keyword: Localization; Author-Supplied Keyword: Photoluminescence; Author-Supplied Keyword: Superlattice; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jlumin.2016.06.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118151703&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hall, Harris J. AU - Green, Andrew AU - Dooley, Sarah AU - Schmidt, Jason D. AU - Starman, LaVern A. AU - Langley, Derrick AU - Coutu Jr., Ronald A. T1 - Mass reduction patterning of silicon-on-oxide-based micromirrors. JO - Journal of Micro/Nanolithography, MEMS & MOEMS JF - Journal of Micro/Nanolithography, MEMS & MOEMS Y1 - 2016/10//Oct-Dec2016 VL - 15 IS - 4 M3 - Article SP - 1 EP - 12 SN - 19325150 AB - It has long been recognized in the design of micromirror-based optical systems that balancing static flatness of the mirror surface through structural design with the system's mechanical dynamic response is challenging. Although a variety of mass reduction approaches have been presented in the literature to address this performance trade, there has been little quantifiable comparison reported. In this work, different mass reduction approaches, some unique to the work, are quantifiably compared with solid plate thinning in both curvature and mass using commercial finite element simulation of a specific square silicon-on-insulator-based micromirror geometry. Other important considerations for micromirror surfaces, including surface profile and smoothness, are also discussed. Fabrication of one of these geometries, a two-dimensional tessellated square pattern, was performed in the presence of a 400-µm-tall central post structure using a simple single mask process. Limited experimental curvature measurements of fabricated samples are shown to correspond well with properly characterized simulation results and indicate ~67% improvement in radius of curvature in comparison to a solid plate design of equivalent mass. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Micro/Nanolithography, MEMS & MOEMS is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON compounds KW - MICROMIRRORS KW - OPTICAL projectors KW - NONMETALS KW - SILICON oxide KW - micro-optics KW - microelectromechanical systems KW - mirrors KW - optomechanical design KW - silicon KW - spatial light modulators N1 - Accession Number: 120697510; Hall, Harris J. 1; Email Address: harris.hall.3@us.af.mil Green, Andrew 1,2 Dooley, Sarah 1 Schmidt, Jason D. 1 Starman, LaVern A. 1 Langley, Derrick 3 Coutu Jr., Ronald A. 3; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, 2241 Avionics Circle, Building 600, Wright-Patterson Air Force Base, Ohio 45433-7734, United States 2: KBRWyle, 2601 Mission Point Boulevard, Dayton, Ohio 45433, United States 3: Air Force Institute of Technology, Department of Electrical and Computer Engineering, 2950 Hobson Way, Building 641, Wright-Patterson Air Force Base, Ohio 45433-7765, United States; Source Info: Oct-Dec2016, Vol. 15 Issue 4, p1; Subject Term: SILICON compounds; Subject Term: MICROMIRRORS; Subject Term: OPTICAL projectors; Subject Term: NONMETALS; Subject Term: SILICON oxide; Author-Supplied Keyword: micro-optics; Author-Supplied Keyword: microelectromechanical systems; Author-Supplied Keyword: mirrors; Author-Supplied Keyword: optomechanical design; Author-Supplied Keyword: silicon; Author-Supplied Keyword: spatial light modulators; Number of Pages: 12p; Document Type: Article L3 - 10.1117/1.JMM.15.4.045501 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120697510&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Syse, Henrik AU - Cook, Martin L. T1 - Editors’ Introduction. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2016/10// VL - 15 IS - 3 M3 - Article SP - 169 EP - 169 SN - 15027570 AB - An introduction is presented in which the editor discusses various reports within the issue on topics including automated weaponry, military ethics, and nuclear weapons. KW - MILITARY ethics KW - NUCLEAR weapons N1 - Accession Number: 120392750; Syse, Henrik 1,2 Cook, Martin L. 3,4; Affiliation: 1: Peace Research Institute Oslo (PRIO), Norway 2: Björknes University College, Oslo, Norway 3: United States Naval War College, Newport, Rhode Island, USA 4: United States Air Force Academy, Colorado Springs, Colorado, USA; Source Info: Oct2016, Vol. 15 Issue 3, p169; Subject Term: MILITARY ethics; Subject Term: NUCLEAR weapons; Number of Pages: 1p; Document Type: Article L3 - 10.1080/15027570.2016.1257850 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120392750&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chapa, Joseph O. AU - Blair, David J. T1 - The Just Warrior Ethos: A Response to Colonel Riza. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2016/10// VL - 15 IS - 3 M3 - Letter to the Editor SP - 170 EP - 186 SN - 15027570 AB - In 2014, Colonel M. Shane Riza published an article in this journal arguing that remotely piloted aircraft (RPA) and robotic weapons threaten the US Air Force’s warrior ethos. Riza has clearly articulated the sentiments of one side of a vibrant debate within our service. This paper presents an alternative view; a view held by some who have experienced these new forms and tools of war, and who have wrestled with their implications first-hand. In this paper, we address some methodological concerns with Riza’s approach and then engage some misunderstandings about RPA’s relationship to military history and to risk. The second part of this paper takes a close look at some of the early Just War thinkers to determine what implications the tradition may have on the warrior ethos. We propose, as an alternative to Riza’s position, a return to an ethos grounded in humility, charity, and a conception of war as a last resort; in short, a return to the Just Warrior Ethos. [ABSTRACT FROM PUBLISHER] AB - Copyright of Journal of Military Ethics is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DRONE aircraft KW - Drone KW - martial virtue KW - RPA KW - UAV KW - warrior ethos KW - UNITED States. Air Force KW - RIZA, M. Shane N1 - Accession Number: 120392745; Chapa, Joseph O. 1 Blair, David J. 2; Affiliation: 1: HQ USAFA/DFPY, Instructor of Philosophy, US Air Force Academy, Colorado, USA 2: US Air Force, New Mexico, USA; Source Info: Oct2016, Vol. 15 Issue 3, p170; Subject Term: DRONE aircraft; Author-Supplied Keyword: Drone; Author-Supplied Keyword: martial virtue; Author-Supplied Keyword: RPA; Author-Supplied Keyword: UAV; Author-Supplied Keyword: warrior ethos; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; People: RIZA, M. Shane; Number of Pages: 17p; Document Type: Letter to the Editor L3 - 10.1080/15027570.2016.1251232 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120392745&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, James L. T1 - Playing to the Edge. American Intelligence in the Age of Terror, by Michael V. Hayden. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2016/10// VL - 15 IS - 3 M3 - Book Review SP - 250 EP - 255 SN - 15027570 KW - MEMOIRS KW - NONFICTION KW - HAYDEN, Michael V. (Michael Vincent), 1945- KW - PLAYING to the Edge: American Intelligence in the Age of Terror (Book) N1 - Accession Number: 120392746; Cook, James L. 1; Affiliation: 1: Department of Philosophy, United States Air Force Academy, USA; Source Info: Oct2016, Vol. 15 Issue 3, p250; Subject Term: MEMOIRS; Subject Term: NONFICTION; Reviews & Products: PLAYING to the Edge: American Intelligence in the Age of Terror (Book); People: HAYDEN, Michael V. (Michael Vincent), 1945-; Number of Pages: 6p; Document Type: Book Review L3 - 10.1080/15027570.2016.1251233 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120392746&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Droz, Nicole C AU - Mathew, Stephanie D T1 - A Case of Idiopathic Retroperitoneal Fibrosis Associated With Sjögren's Syndrome. JO - Military Medicine JF - Military Medicine Y1 - 2016/10// VL - 181 IS - 10 M3 - journal article SP - e1407 EP - e1409 SN - 00264075 AB - After presenting with nonspecific symptoms, a 52-year-old female was found to have a 3.4 × 2.6 cm retroperitoneal mass resulting in hydronephrosis on abdominal computed tomography scan. After extensive workup including surgical debulking, excisional biopsy, and autoimmune panel, she was found to have idiopathic retroperitoneal fibrosis (IRF) with negative staining for immunoglogulin G4 (IgG4). Two years after presentation, the patient developed dyspnea, cough, and xerostomia. Repeat anti-Sjögren Syndrome A and anti-Sjögren Syndrome B titers and labial gland biopsy confirmed the diagnosis of concomitant Sjögren's syndrome (SS). The patient was treated with mycophenolate mofetil with improvement in her symptoms. Most cases of retroperitoneal fibrosis are associated with IgG4-related disease or other autoimmune disease. To our knowledge, this is only the second reported case of SS associated with IRF. Because symptoms of IRF are nonspecific, there is often a delay in diagnosis resulting in end-organ disease such as ureteral obstruction or hydronephrosis. Although IRF is uncommon, it should be considered in patients presenting with abdominal or flank pain, especially in patients with concomitant autoimmune disorders. Early recognition of disease can prevent end-organ damage and, as more cases are diagnosed, its relationship to SS may be elucidated leading to further advances in treatment and surveillance. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 119412912; Droz, Nicole C 1 Mathew, Stephanie D 2; Affiliation: 1: Department of Internal Medicine, Wright State University, 128 East Apple Street, 2nd Floor, Dayton, OH 45409 2: Department of Rheumatology, Wright Patterson Medical Center, United States Air Force, 4881 Sugar Maple Drive, WPAFB, OH 45433; Source Info: Oct2016, Vol. 181 Issue 10, pe1407; Number of Pages: 3p; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119412912&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 119412912 T1 - A Case of Idiopathic Retroperitoneal Fibrosis Associated With Sjögren's Syndrome. AU - Droz, Nicole C AU - Mathew, Stephanie D Y1 - 2016/10// N1 - Accession Number: 119412912. Language: English. Entry Date: In Process. Revision Date: 20161118. Publication Type: journal article. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 2984771R. SP - e1407 EP - e1409 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 181 IS - 10 CY - Bethesda, Maryland PB - AMSUS AB - After presenting with nonspecific symptoms, a 52-year-old female was found to have a 3.4 × 2.6 cm retroperitoneal mass resulting in hydronephrosis on abdominal computed tomography scan. After extensive workup including surgical debulking, excisional biopsy, and autoimmune panel, she was found to have idiopathic retroperitoneal fibrosis (IRF) with negative staining for immunoglogulin G4 (IgG4). Two years after presentation, the patient developed dyspnea, cough, and xerostomia. Repeat anti-Sjögren Syndrome A and anti-Sjögren Syndrome B titers and labial gland biopsy confirmed the diagnosis of concomitant Sjögren's syndrome (SS). The patient was treated with mycophenolate mofetil with improvement in her symptoms. Most cases of retroperitoneal fibrosis are associated with IgG4-related disease or other autoimmune disease. To our knowledge, this is only the second reported case of SS associated with IRF. Because symptoms of IRF are nonspecific, there is often a delay in diagnosis resulting in end-organ disease such as ureteral obstruction or hydronephrosis. Although IRF is uncommon, it should be considered in patients presenting with abdominal or flank pain, especially in patients with concomitant autoimmune disorders. Early recognition of disease can prevent end-organ damage and, as more cases are diagnosed, its relationship to SS may be elucidated leading to further advances in treatment and surveillance. SN - 0026-4075 AD - Department of Internal Medicine, Wright State University, 128 East Apple Street, 2nd Floor, Dayton, OH 45409 AD - Department of Rheumatology, Wright Patterson Medical Center, United States Air Force, 4881 Sugar Maple Drive, WPAFB, OH 45433 U2 - PMID: 27753592. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=119412912&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - North, James M. AU - Hong, Kyung-Soo Jason AU - Cho, Philip Young T1 - Clinical Outcomes of 1 kHz Subperception Spinal Cord Stimulation in Implanted Patients With Failed Paresthesia-Based Stimulation: Results of a Prospective Randomized Controlled Trial. JO - Neuromodulation JF - Neuromodulation Y1 - 2016/10// VL - 19 IS - 7 M3 - Article SP - 731 EP - 737 SN - 10947159 AB - Background Pain relief via spinal cord stimulation (SCS) has historically revolved around producing paresthesia to replace pain, with success measured by the extent of paresthesia-pain overlap. In a recent murine study, by Shechter et al., showed the superior efficacy of high frequency SCS (1 kHz and 10 kHz) at inhibiting the effects of mechanical hypersensitivity compared to sham or 50 Hz stimulation. In the same study, authors report there were no differences in efficacy between 1 kHz and 10 kHz delivered at subperception stimulation strength (80% of motor threshold). Therefore, we designed a randomized, 2 × 2 crossover study of low frequency supra-perception SCS vs. subperception SCS at 1 kHz frequency in order to test whether subperception stimulation at 1 kHz was sufficient to provide effective pain relief in human subjects. Methods Twenty-two subjects with SCS, and inadequate pain relief based on numeric pain rating scale (NPRS) scores (>5) were enrolled, and observed for total of seven weeks (three weeks of treatment, one week wash off, and another three weeks of treatment). Subjects were asked to rate their pain on NPRS as a primary efficacy variable, and complete the Oswestry Disability Index (ODI) and Patient's Global Impression of Change (PGIC) as secondary outcome measures. Results Out of 22 subjects that completed the study, 21 subjects (95%) reported improvements in average, best, and worst pain NPRS scores. All NPRS scores were significantly lower with subperception stimulation compared to paresthesia-based stimulation ( p < 0.01, p < 0.05, and p < 0.05, respectively). As with NPRS scores, the treatment effect of subperception stimulation was significantly greater than that of paresthesia based stimulation on ODI scores ( p = 3.9737 × 10−5) and PGIC scores ( p = 3.0396 × 10−5). [ABSTRACT FROM AUTHOR] AB - Copyright of Neuromodulation is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC stimulation KW - SPINAL cord KW - PARESTHESIA KW - NERVOUS system -- Diseases KW - PATIENTS KW - OUTCOME assessment (Medical care) KW - Axial pain KW - chronic pain KW - high frequency spinal cord stimulation KW - numeric pain rating scale KW - Oswestry disability index KW - paresthesia KW - patient global impression of change KW - spinal cord stimulation KW - subperception stimulation N1 - Accession Number: 118526713; North, James M. 1 Hong, Kyung-Soo Jason 1 Cho, Philip Young 2; Affiliation: 1: The Center for Clinical Research, Carolinas Pain Institute 2: Mathematical Sciences, United States Air Force Academy; Source Info: Oct2016, Vol. 19 Issue 7, p731; Subject Term: ELECTRIC stimulation; Subject Term: SPINAL cord; Subject Term: PARESTHESIA; Subject Term: NERVOUS system -- Diseases; Subject Term: PATIENTS; Subject Term: OUTCOME assessment (Medical care); Author-Supplied Keyword: Axial pain; Author-Supplied Keyword: chronic pain; Author-Supplied Keyword: high frequency spinal cord stimulation; Author-Supplied Keyword: numeric pain rating scale; Author-Supplied Keyword: Oswestry disability index; Author-Supplied Keyword: paresthesia; Author-Supplied Keyword: patient global impression of change; Author-Supplied Keyword: spinal cord stimulation; Author-Supplied Keyword: subperception stimulation; Number of Pages: 6p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1111/ner.12441 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118526713&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vangala, Shivashankar AU - Kimani, Martin AU - Peterson, Rita AU - Stites, Ron AU - Snure, Michael AU - Tassev, Vladimir T1 - Thick orientation-patterned growth of GaP on wafer-fused GaAs templates by hydride vapor phase epitaxy for frequency conversion. JO - Optical Materials JF - Optical Materials Y1 - 2016/10// VL - 60 M3 - Article SP - 62 EP - 66 SN - 09253467 AB - Quasi-phase-matched (QPM) GaP layers up to 300 μm thick have been produced by low-pressure hydride vapor phase epitaxy (LP-HVPE) overgrowth on orientation-patterned GaAs (OPGaAs) templates fabricated using a wafer-fusion bonding technique. The growth on the OPGaAs templates resulted in up to 200 μm thick vertically propagating domains, with a total GaP thickness of 300 μm. The successful thick growth on OPGaAs templates is the first step towards solving the material problems associated with unreliable material quality of commercially available GaP wafers and making the whole process of designing QPM frequency conversion devices molecular beam epitaxy free and more cost-effective. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL orientation KW - CRYSTAL growth KW - GALLIUM phosphide KW - GALLIUM arsenide KW - HYDRIDES KW - EPITAXY KW - GaAs KW - GaP KW - Hydride vapor phase epitaxy KW - Nonlinear optical materials KW - Wafer fusion N1 - Accession Number: 118697302; Vangala, Shivashankar 1,2; Email Address: shivashankar.vangala.ctr@wpafb.af.mil Kimani, Martin 1 Peterson, Rita 1 Stites, Ron 1 Snure, Michael 1 Tassev, Vladimir 1; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright Patterson AFB, OH, 45433, USA 2: SURVICE Engineering, Dayton, OH, 45431, USA; Source Info: Oct2016, Vol. 60, p62; Subject Term: CRYSTAL orientation; Subject Term: CRYSTAL growth; Subject Term: GALLIUM phosphide; Subject Term: GALLIUM arsenide; Subject Term: HYDRIDES; Subject Term: EPITAXY; Author-Supplied Keyword: GaAs; Author-Supplied Keyword: GaP; Author-Supplied Keyword: Hydride vapor phase epitaxy; Author-Supplied Keyword: Nonlinear optical materials; Author-Supplied Keyword: Wafer fusion; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.optmat.2016.07.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118697302&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 118570745 T1 - Anoxic Brain Injury Secondary to Metabolic Encephalopathy. AU - Ferris, Lyndsey M. AU - Engelke, Carla Y1 - 2016/10// N1 - Accession Number: 118570745. Language: English. Entry Date: In Process. Revision Date: 20161007. Publication Type: Article. Journal Subset: Biomedical; Peer Reviewed; USA. NLM UID: 8904931. SP - 1319 EP - 1327 JO - Optometry & Vision Science JF - Optometry & Vision Science JA - OPTOM VISION SCI VL - 93 IS - 10 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 1040-5488 AD - United States Air Force, Wilford Hall Ambulatory Surgical Center, Joint Base San Antonio-Lackland, Texas AD - Southern Arizona Veteran's Affairs Health Care System, Tucson, Arizona AD - Southern California College of Optometry at Marshal B. Ketchum University, Fullerton, California UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=118570745&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Turner, D. B. AU - Kelly, T. D. AU - Peterson, G. R. AU - Reding, J. D. AU - Hengehold, R. L. AU - Mann, J. M. AU - Kolis, J. W. AU - Zhang, X. AU - Dowben, P. A. AU - Petrosky, J. C. T1 - Electronic structure of hydrothermally synthesized single crystal U0.22Th0.78O2. JO - Physica Status Solidi (B) JF - Physica Status Solidi (B) Y1 - 2016/10// VL - 253 IS - 10 M3 - Article SP - 1970 EP - 1976 SN - 03701972 AB - Single crystals of ThO2, UO2, and their solid solutions, U xTh1- xO2, have been obtained through various hydrothermal growth conditions. This technique offers the better of two other growth processes: (i) single crystal purity as by photochemical growth of nanocrystals; and (ii) large/bulk sizes as obtained by the arc melt method. The band gap of the U xTh1- xO2 single crystal solid solution, along with the luminescence transition, have been characterized. The occupied and unoccupied structures are determined using ultraviolet and inverse photoemission spectroscopy and the electronic band gap was measured to be 3-4 eV. The strain of incorporating U into the ThO2 is analyzed through Vegard's law. In this crystal there are defect and impurity sites, likely arising from the kinetic growth process, giving rise to a similar yet slightly different optical gap evident with cathodoluminescence spectroscopy. There is a major luminescence feature spanning the range from 3.18 to 4.96 eV (250-390 nm) with a maximum at 4.09 eV (303 nm), corresponding with the measured electronic band gap. In this paper, the electronic properties of a solid solution U0.22Th0.78O2 are measured and interpreted compared to the pure actinide oxides, ThO2 and UO2. [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi (B) is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SINGLE crystals KW - SOLID solutions KW - PHOTOCHEMISTRY KW - NANOCRYSTALS KW - LUMINESCENCE KW - cathodoluminescence KW - electronic properties KW - inverse photoemission KW - ThO2 KW - ultraviolet photoemission KW - UO2 N1 - Accession Number: 118585802; Turner, D. B. 1 Kelly, T. D. 2 Peterson, G. R. 2 Reding, J. D. 2 Hengehold, R. L. 2 Mann, J. M. 3 Kolis, J. W. 4 Zhang, X. 5 Dowben, P. A. 5 Petrosky, J. C. 2; Affiliation: 1: Oak Ridge Institute for Science and Education 2: Department of Engineering Physics, Air Force Institute of Technology 3: Air Force Research Laboratory, Sensors Directorate 4: Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET), Clemson University 5: Department of Physics and Astronomy, University of Nebraska-Lincoln; Source Info: Oct2016, Vol. 253 Issue 10, p1970; Subject Term: SINGLE crystals; Subject Term: SOLID solutions; Subject Term: PHOTOCHEMISTRY; Subject Term: NANOCRYSTALS; Subject Term: LUMINESCENCE; Author-Supplied Keyword: cathodoluminescence; Author-Supplied Keyword: electronic properties; Author-Supplied Keyword: inverse photoemission; Author-Supplied Keyword: ThO2; Author-Supplied Keyword: ultraviolet photoemission; Author-Supplied Keyword: UO2; Number of Pages: 7p; Document Type: Article L3 - 10.1002/pssb.201600277 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118585802&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hoff, Brad W. AU - Simon, David S. AU - French, David M. AU - Lau, Y. Y. AU - Wong, Patrick T1 - Study of a high power sine waveguide traveling wave tube amplifier centered at 8 GHz. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2016/10// VL - 23 IS - 10 M3 - Article SP - 103102-1 EP - 103102-6 SN - 1070664X AB - Performance of a 20-stage X-band sine waveguide amplifier, driven by a 40 A, 100 kV, cylindrical electron beam, is studied using numerical simulation and interpreted using Pierce’s classical traveling wave tube theory. For an input signal power level of 1.8 kW, particle-in-cell simulations predict gain and bandwidth values exceeding 14 dB and 13%, respectively. For an input signal power level of 7.2 kW, particle-in-cell simulations predict gain and bandwidth values exceeding 12 dB and 15%, respectively, with output power levels exceeding 110kW at peak gain. Also given are: an assessment of the space charge factor (Pierce’s QC parameter) for the complex circuit using simulation data, and an evaluation of the harmonic contents in the beam current. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRAVELING-wave amplifiers KW - PLASMA waveguides KW - ELECTRON beams KW - COMPUTER simulation KW - SPACE charge N1 - Accession Number: 119340461; Hoff, Brad W. 1 Simon, David S. 2 French, David M. 2 Lau, Y. Y. 3 Wong, Patrick 3; Affiliation: 1: Air Force Research Laboratory, Kirtland AFB, Albuquerque, New Mexico 87117, USA. 2: Leidos, 2109 Airpark Road SE, Albuquerque, New Mexico 87106, USA. 3: Nuclear Engineering and Radiological Sciences Department, University of Michigan, Ann Arbor, Michigan 48109, USA.; Source Info: 2016, Vol. 23 Issue 10, p103102-1; Subject Term: TRAVELING-wave amplifiers; Subject Term: PLASMA waveguides; Subject Term: ELECTRON beams; Subject Term: COMPUTER simulation; Subject Term: SPACE charge; Number of Pages: 6p; Illustrations: 1 Diagram, 10 Graphs; Document Type: Article L3 - 10.1063/1.4964141 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119340461&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Demidov, V. I. AU - Adams, S. F. AU - Miles, J. A. AU - Koepke, M. E. AU - Kurlyandskaya, I. P. T1 - Suprathermal electron energy spectrum and nonlocally affected plasma-wall interaction in helium/air micro-plasma at atmospheric pressure. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2016/10// VL - 23 IS - 10 M3 - Article SP - 103508-1 EP - 103508-5 SN - 1070664X AB - Details of ground-state and excited-state neutral atoms and molecules in an atmospheric-pressure micro-discharge plasma may be obtained by plasma electron spectroscopy (PLES), based on a wall probe. The presence and transport of energetic (suprathermal) electrons, having a nonlocal origin, are responsible for electrostatic charging of the plasma boundary surfaces to potentials many times that associated with the ambient electron kinetic energy. The energy-flux distribution function is shown to be controllable for applications involving analysis of composition and processes taking place in a multiphase (plasma-gas-solid), chemically reactive, interaction region. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL electrons KW - PLASMA-wall interactions KW - HELIUM plasmas KW - ATMOSPHERIC pressure KW - ELECTRON spectroscopy KW - PLASMA boundary layers N1 - Accession Number: 119342739; Demidov, V. I. 1,2; Email Address: vladimir.demidov@mail.wvu.edu Adams, S. F. 1 Miles, J. A. 1 Koepke, M. E. 2 Kurlyandskaya, I. P. 3,4; Affiliation: 1: Air Force Research Laboratory, WPAFB, Ohio 45433, USA. 2: Department of Physics and Astronomy, West Virginia University, Morgantown, West Virginia 26506, USA. 3: ITMO University, Kronverkskiy pr. 4: SPbU SFS EMERCOM RF, Murmansk Branch, Murmansk 183040, Russia.; Source Info: 2016, Vol. 23 Issue 10, p103508-1; Subject Term: THERMAL electrons; Subject Term: PLASMA-wall interactions; Subject Term: HELIUM plasmas; Subject Term: ATMOSPHERIC pressure; Subject Term: ELECTRON spectroscopy; Subject Term: PLASMA boundary layers; Number of Pages: 5p; Illustrations: 1 Color Photograph, 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.4964721 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119342739&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cai, Chunpei AU - Cooke, David L. T1 - A simple model for electron temperature in dilute plasma flows. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2016/10// VL - 23 IS - 10 M3 - Article SP - 103513-1 EP - 103513-6 SN - 1070664X AB - In this short note, we present some work on investigating electron temperatures and potentials in steady dilute plasma flows. The analysis is based on the detailed fluid model for electrons. Ionizations, normalized electron number density gradients, and magnetic fields are neglected. The transport properties are assumed as local constants. With these treatments, the partial differential equation for electron temperature degenerates as an ordinary differential equation. Along an electron streamline, two simple formulas for electron temperature and plasma potential are obtained. These formulas offer some insights, e.g., the electron temperature and plasma potential distributions along an electron streamline include two exponential functions, and the one for plasma potential includes an extra linear distribution function. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON temperature KW - PLASMA flow KW - ELECTRON density KW - MAGNETIC fields KW - PARTIAL differential equations N1 - Accession Number: 119342820; Cai, Chunpei 1; Email Address: ccai@mtu.edu Cooke, David L. 2; Affiliation: 1: Department of Mechanical Engineering and Engineering Mechanics, Michigan Technological University, Houghton, Michigan 49931, USA. 2: Air Force Research Laboratory, Space Vehicles Directorate, Albuquerque, New Mexico 87117, USA.; Source Info: 2016, Vol. 23 Issue 10, p103513-1; Subject Term: ELECTRON temperature; Subject Term: PLASMA flow; Subject Term: ELECTRON density; Subject Term: MAGNETIC fields; Subject Term: PARTIAL differential equations; Number of Pages: 6p; Illustrations: 8 Graphs; Document Type: Article L3 - 10.1063/1.4965229 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119342820&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adams, S. F. AU - Demidov, V. I. AU - Bogdanov, E. A. AU - Koepke, M. E. AU - Kudryavtsev, A. A. AU - Kurlyandskaya, I. P. T1 - Erratum: “Control of plasma properties in a short direct-current glow discharge with active boundaries” [Phys. Plasmas 23, 024501 (2016)]. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2016/10// VL - 23 IS - 10 M3 - Correction Notice SP - 109901-1 EP - 109901-1 SN - 1070664X KW - PLASMA (Ionized gases) KW - ELECTRIC discharges KW - PLASMA boundary layers N1 - Accession Number: 119344710; Adams, S. F. 1 Demidov, V. I. 1,2 Bogdanov, E. A. 3,4 Koepke, M. E. 2 Kudryavtsev, A. A. 4,5 Kurlyandskaya, I. P. 5,6; Affiliation: 1: Air Force Research Laboratory, WPAFB, Ohio 45433, USA. 2: West Virginia University, Morgantown, West Virginia 26506, USA. 3: ITMO University, Kronverkskiy pr. 4: St. Petersburg State University, St. Petersburg 199034, Russia. 5: ITMO University, Kronverkskiy pr. 49 , St. Petersburg 197101, Russia. 6: St. Petersburg University of State fire Service of EMERCOM RF, Murmansk Branch, Murmansk 183040, Russia.; Source Info: 2016, Vol. 23 Issue 10, p109901-1; Subject Term: PLASMA (Ionized gases); Subject Term: ELECTRIC discharges; Subject Term: PLASMA boundary layers; Number of Pages: 1p; Document Type: Correction Notice L3 - 10.1063/1.4964670 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119344710&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 118852978 T1 - Kynurenine and Tryptophan Levels in Patients With Schizophrenia and Elevated Antigliadin Immunoglobulin G Antibodies. AU - Okusaga, Olaoluwa AU - Fuchs, Dietmar AU - Reeves, Gloria AU - Ina Giegling AU - Hartmann, Annette M. AU - Konte, Bettina AU - Friedl, Marion AU - Groer, Maureen AU - Cook, Thomas B. AU - Stearns-Yoder, Kelly A. AU - Pandey, Janardan P. AU - Kelly, Deanna L. AU - Hoisington, Andrew J. AU - Lowry, Christopher A. AU - Eaton, William W. AU - Brenner, Lisa A. AU - Rujescu, Dan AU - Postolache, Teodor T. AU - Giegling, Ina Y1 - 2016/10// N1 - Accession Number: 118852978. Language: English. Entry Date: In Process. Revision Date: 20161113. Publication Type: journal article. Journal Subset: Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 0376505. SP - 931 EP - 939 JO - Psychosomatic Medicine JF - Psychosomatic Medicine JA - PSYCHOSOM MED VL - 78 IS - 8 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - Objective: Several studies have reported an association between nonceliac gluten sensitivity and schizophrenia. Immune and kynurenine (KYN) pathways have also been implicated in the pathophysiology of schizophrenia, and certain proinflammatory immune mediators may increase KYN and reduce tryptophan (TRP) levels.Methods: We measured serum antigliadin immunoglobulin G (IgG), KYN, and TRP in 950 patients with schizophrenia. Patients with antibody level at the 90th percentile or higher of control participants (21.9% of all patients) were classified as having elevated antigliadin IgG. Independent t tests and linear regression models were used to compare TRP, KYN, and KYN-TRP ratio (indicator of TRP metabolism) between patients with and those without elevated antigliadin IgG. The correlation between antigliadin IgG and TRP, KYN, and the ratio was also evaluated in the patients.Results: KYN and KYN-TRP ratio were higher in patients with elevated antigliadin IgG (geometric mean [standard deviation {SD}] = 2.65 [0.25] µmol/L versus 2.25 [0.23] µmol/L [p < .001] and 0.05 [0.26] versus 0.04 [0.25; p = .001] respectively), findings robust to adjustment for potential demographic and clinical confounders. Antigliadin IgG positively correlated with KYN and KYN-TRP ratio (r = 0.12, p < .001; r = 0.11, p = .002). TRP did not differ between the two groups and did not correlate with antigliadin IgG.Conclusions: Our results connect nonceliac gluten sensitivity with the KYN pathway of TRP metabolism in psychotic illness and hint toward potential individualized treatment targets. SN - 0033-3174 AD - Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, Maryland AD - Department of Psychiatry and Behavioral Sciences AD - Division of Biological Chemistry, Biocenter Innsbruck Medical University, Innsbruck, Austria AD - Child and Adolescent Psychiatry Division, Department of Psychiatry AD - Department of Psychiatry, University of Halle-Wittenberg, Germany AD - University of South Florida, Tampa, Florida AD - Department of Public Health, Mercyhurst University, Erie, Pennsylvania AD - Rocky Mountain Mental Illness Research Education and Clinical Center, Denver, Colorado AD - Military and Veteran Microbiome Consortium for Research and Education, Denver, Colorado AD - Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, South Carolina AD - Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, Maryland AD - Civil and Environmental Engineering Department, United States Air Force Academy, Colorado Springs, Colorado AD - Department of Integrative Physiology and Center for Neuroscience, University of Colorado Boulder, Boulder, Colorado AD - Johns Hopkins University, Baltimore, Maryland AD - Department of Psychiatry, University of Colorado, Anschutz Medical Campus, Aurora, Colorado AD - Department of Neurology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado AD - Department of Physical Medicine and Rehabilitation, University of Colorado, Anschutz Medical Campus, Aurora, Colorado AD - Veterans Integrated Service Network (VISN) 5, Mental Illness Research Education and Clinical Center, Baltimore, Maryland U2 - PMID: 27359171. DO - 10.1097/PSY.0000000000000352 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=118852978&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 118570364 T1 - UTILITY OF ICU LEVEL VENTILATORS IN AUSTERE ENVIRONMENTS. AU - Blakeman, Thomas AU - Rodriquez, Dario AU - Cox, Daniel AU - Branson, Richard Y1 - 2016/10// N1 - Accession Number: 118570364. Language: English. Entry Date: 20161116. Revision Date: 20161116. Publication Type: Article. Journal Subset: Allied Health; Blind Peer Reviewed; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 7510357. KW - Ventilators, Mechanical -- Utilization KW - Aircraft KW - Safety KW - Tidal Volume KW - Altitude SP - OF39 EP - OF39 JO - Respiratory Care JF - Respiratory Care JA - RESPIR CARE VL - 61 IS - 10 CY - Irving, Texas PB - Daedalus Enterprises, Inc. AB - Background: Despite safeguarding procedures set in place by the U.S. military regarding airworthiness and safety, caregivers may forgo this process in an attempt to use critical assets such as mechanical ventilators with a waiver for one-time use in extenuating circumstances. These devices may be safe for use in the aircraft, but may not have been validated for clinical accuracy when operated at altitude. Methods: We evaluated one device each of two intensive care unit (ICU) level ventilators, Evita XL (Drager Medical, Telford, PA) and Puritan Bennett (PB) 840 (Covidien, Mansfield, MA), in an altitude chamber at sea level and simulated altitudes of 8,000 and 16,000 feet. At sea level and each altitude, ventilators were connected to a test lung and evaluated using a range of settings using normal, restrictive, and obstructive lung models. Airway pressure, flow, and volume were recorded on a breath-to-breath basis for 1 minute after 1 minute of stabilization. Results: In volume-controlled ventilation mode, 75% of the tidal volumes (VTs) were outside the < 10% of set VT ASTM standard with the PB 840 at both altitudes and also at sea level, but the differences were not so great to be considered clinically important. None of the settings delivered with the PB 840 in pressure control ventilation and pressure-regulated volume control modes were adversely affected by altitude. Delivered VT was affected by operation at altitude with the Drager XL (Fig. 1), but no other ventilator settings were affected. Changes in PEEP or lung compliance had no significant effect on delivered VT with either ventilator. Sixty-seven percent of the VTs at all ventilator/lung compliance settings and both altitudes were outside the ASTM standard of ± 10% of set VT with the Drager XL. Additionally, 54% of delivered VTs at altitude were more than 10% larger than delivered VTs at sea level with this device, with 62% of these VT differences being clinically important. Conclusions: Ventilators used in this environment must maintain desired settings, especially VT. The PB 840 did not deliver VTs that were larger than the ASTM standard up to an altitude of 16,000 feet, while the majority of the delivered VTs with the Drager XL were greater than the ASTM standard and were often > 50% larger than set VT at 16,000 feet. This could present a patient safety issue. Caregivers must be aware of the limitations of ICU ventilators when utilized in a hypobaric environment in order to provide safe care. SN - 0020-1324 AD - University of Cincinnati, Cincinnati, OH AD - United States Air Force School of Aerospace Medicine, Wright-Patterson Air Force Base, OH UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=118570364&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - KALYANAM, KRISHNAMOORTHY AU - CASBEER, DAVID W. AU - PACHTER, MEIR T1 - PURSUIT OF A MOVING TARGET WITH KNOWN CONSTANT SPEED ON A DIRECTED ACYCLIC GRAPH UNDER PARTIAL INFORMATION. JO - SIAM Journal on Control & Optimization JF - SIAM Journal on Control & Optimization Y1 - 2016/10// VL - 54 IS - 5 M3 - Article SP - 2259 EP - 2273 SN - 03630129 AB - We consider the optimal control of a \blind" pursuer searching for an evader moving on a road network with fixed speed toward a set of goal locations. To aid the pursuer and provide feedback information, certain roads in the network have been instrumented with unattended ground sensors (UGSs) that detect the evader's motion. When the pursuer arrives at an instrumented node, the UGS therein informs the pursuer whether and when the evader visited that node. The pursuer is also made aware of the evader's speed. Moreover, the embedded graph comprised of the UGSs as vertices and connecting roads as edges is restricted to being a directed acyclic graph (DAG). The pursuer's motion is not restricted to the road network. In addition, the pursuer can choose to wait/loiter for an arbitrary time at any UGS location/node. At time 0, the evader's entry into the road network is registered at UGS 1, the entry node to the graph. The pursuer also arrives at the entry node after some delay d and is thus informed about the presence of the intruder/evader in the network, whereupon the chase is on|the pursuer is tasked with capturing the evader. Capture entails the pursuer and evader being co-located at an UGS location. If this happens, the UGS is triggered, and this information is instantaneously relayed to the pursuer, thereby enabling capture. On the other hand, if the evader reaches one of the exit nodes of the graph without being captured, he is deemed to have escaped. We provide an algorithm that computes the maximum initial delay d for which capture is guaranteed. The algorithm also returns the corresponding optimal pursuit policy. [ABSTRACT FROM AUTHOR] AB - Copyright of SIAM Journal on Control & Optimization is the property of Society for Industrial & Applied Mathematics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACYCLIC model KW - GRAPH theory KW - INFORMATION theory KW - FEEDBACK control systems KW - ROADS -- Design & construction KW - directed acyclic graph KW - dual control KW - dynamic game KW - partial information KW - pursuit-evasion N1 - Accession Number: 119511757; KALYANAM, KRISHNAMOORTHY 1; Email Address: krishnak@ucla.edu CASBEER, DAVID W. 2; Email Address: david.casbeer@us.af.mil PACHTER, MEIR 3; Email Address: meir.pachter@afit.edu; Affiliation: 1: InfoSciTex Corporation, a DCS Company, Dayton, OH 45431 2: Autonomous Control Branch, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433 3: Department of Electrical and Computer Engineering, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH 45433; Source Info: 2016, Vol. 54 Issue 5, p2259; Subject Term: ACYCLIC model; Subject Term: GRAPH theory; Subject Term: INFORMATION theory; Subject Term: FEEDBACK control systems; Subject Term: ROADS -- Design & construction; Author-Supplied Keyword: directed acyclic graph; Author-Supplied Keyword: dual control; Author-Supplied Keyword: dynamic game; Author-Supplied Keyword: partial information; Author-Supplied Keyword: pursuit-evasion; NAICS/Industry Codes: 237310 Highway, Street, and Bridge Construction; Number of Pages: 15p; Document Type: Article L3 - 10.1137/140994216 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119511757&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Crampton, Andrew S. AU - Rötzer, Marian D. AU - Ridge, Claron J. AU - Yoon, Bokwon AU - Schweinberger, Florian F. AU - Landman, Uzi AU - Heiz, Ueli T1 - Assessing the concept of structure sensitivity or insensitivity for sub-nanometer catalyst materials. JO - Surface Science JF - Surface Science Y1 - 2016/10// VL - 652 M3 - Article SP - 7 EP - 19 SN - 00396028 AB - The nature of the nano-catalyzed hydrogenation of ethylene, yielding benchmark information pertaining to the concept of structure sensitivity/insensitivity and its applicability at the bottom of the catalyst particle size-range, is explored with experiments on size-selected Ptn (n = 7–40) clusters soft-landed on MgO, in conjunction with first-principles simulations. As in the case of larger particles both the direct ethylene hydrogenation channel and the parallel hydrogenation–dehydrogenation ethylidyne-producing route must be considered, with the fundamental uncovering that at the < 1 nm size-scale the reaction exhibits characteristics consistent with structure sensitivity, in contrast to the structure insensitivity found for larger particles. In this size-regime, the chemical properties can be modulated and tuned by a single atom, reflected by the onset of low temperature hydrogenation at T > 150 K catalyzed by Pt n (n ≥ 10) clusters, with maximum room temperature reactivity observed for Pt 13 using a pulsed molecular beam technique. Structure insensitive behavior, inherent for specific cluster sizes at ambient temperatures, can be induced in the more active sizes, e.g. Pt 13 , by a temperature increase, up to 400 K, which opens dehydrogenation channels leading to ethylidyne formation. This reaction channel was, however found to be attenuated on Pt 20 , as catalyst activity remained elevated after the 400 K step. Pt 30 displayed behavior which can be understood from extrapolating bulk properties to this size range; in particular the calculated d-band center. In the non-scalable sub-nanometer size regime, however, precise control of particle size may be used for atom-by-atom tuning and manipulation of catalyzed hydrogenation activity and selectivity. [ABSTRACT FROM AUTHOR] AB - Copyright of Surface Science is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CATALYTIC hydrogenation KW - MOLECULAR structure KW - NANOSTRUCTURED materials KW - ETHYLENE KW - PARTICLE size determination KW - METAL clusters KW - MAGNESIUM oxide KW - DENSITY functional theory KW - Clusters KW - DFT calculations KW - Ethylene hydrogenation KW - Model catalysis KW - Platinum KW - Structure sensitivity N1 - Accession Number: 116781104; Crampton, Andrew S. 1 Rötzer, Marian D. 1 Ridge, Claron J. 1,2 Yoon, Bokwon 3 Schweinberger, Florian F. 1 Landman, Uzi 3 Heiz, Ueli 1; Affiliation: 1: Lehrstuhl für Physikalische Chemie, Catalysis Research Center & Chemistry Department, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany 2: Air Force Research Laboratory, Energetic Materials Branch, 2306 Perimeter Rd., Eglin AFB 32542, USA 3: School of Physics, Georgia Institute of Technology, Atlanta, GA 30332-0430, USA; Source Info: Oct2016, Vol. 652, p7; Subject Term: CATALYTIC hydrogenation; Subject Term: MOLECULAR structure; Subject Term: NANOSTRUCTURED materials; Subject Term: ETHYLENE; Subject Term: PARTICLE size determination; Subject Term: METAL clusters; Subject Term: MAGNESIUM oxide; Subject Term: DENSITY functional theory; Author-Supplied Keyword: Clusters; Author-Supplied Keyword: DFT calculations; Author-Supplied Keyword: Ethylene hydrogenation; Author-Supplied Keyword: Model catalysis; Author-Supplied Keyword: Platinum; Author-Supplied Keyword: Structure sensitivity; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 325411 Medicinal and Botanical Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.susc.2016.02.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116781104&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2016-37774-001 AN - 2016-37774-001 AU - Emo, Amanda K. AU - Matthews, Gerald AU - Funke, Gregory J. T1 - The slow and the furious: Anger, stress and risky passing in simulated traffic congestion. JF - Transportation Research Part F: Traffic Psychology and Behaviour JO - Transportation Research Part F: Traffic Psychology and Behaviour JA - Transp Res Part F Traffic Psychol Behav Y1 - 2016/10// VL - 42 IS - Part 1 SP - 1 EP - 14 CY - Netherlands PB - Elsevier Science SN - 1369-8478 SN - 1873-5517 AD - Emo, Amanda K., 734 Potomac View Pkwy, Brunswick, MD, US, 21716 N1 - Accession Number: 2016-37774-001. Partial author list: First Author & Affiliation: Emo, Amanda K.; Federal Railroad Administration, Washington, DC, US. Release Date: 20160808. Correction Date: 20170216. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Anger; Coping Behavior; Driving Behavior. Minor Descriptor: Risk Taking. Classification: Transportation (4090). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Driver Stress Inventory; Driver Coping Questionnaire; Coping In Task Situations; UWIST Mood Adjective Checklist DOI: 10.1037/t25937-000; Dundee Stress State Questionnaire DOI: 10.1037/t27031-000. Methodology: Empirical Study; Quantitative Study. Page Count: 14. Issue Publication Date: Oct, 2016. Publication History: First Posted Date: Jul 28, 2016; Accepted Date: May 30, 2016; Revised Date: Jan 7, 2016; First Submitted Date: May 1, 2015. AB - 112 college students participated in a study of simulated driving to investigate how trait driver aggression, state anger and coping predict risk-taking behaviors such as tailgating and frequency of passing. The simulation scenario, driving in slow traffic, elicited both anger and stress. However, consistent with the transactional model of driver stress, anger and distress were associated with different patterns of coping. Both anger and aggression were associated with dispositional confrontive coping. Drivers were afforded opportunities to pass other traffic, in risky circumstances. Dispositional coping factors, especially confrontive coping, predicted risk-taking behaviors, such as frequent passing and tailgating prior to the pass. However, trait aggression and anger did not predict risky behaviors. Confrontive drivers may have developed habitual behavioral styles that are expressed irrespective of current mood and coping strategy. The findings suggest that stress or anger management may be only a partial solution to dangerous driving in congested conditions. Further investigation of how drivers acquire confrontive behavioral styles is needed. The data also support multivariate approaches to selecting safe drivers in commercial and industrial contexts. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - State anger KW - Trait anger KW - Driver behavior KW - Stress KW - Coping KW - Risk taking KW - 2016 KW - Anger KW - Coping Behavior KW - Driving Behavior KW - Risk Taking KW - 2016 DO - 10.1016/j.trf.2016.05.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-37774-001&site=ehost-live&scope=site UR - amanda.emo@dot.gov DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-55448-001 AN - 2015-55448-001 AU - Stith, Sandra M. AU - Milner, Joel S. AU - Fleming, Matthew AU - Robichaux, Renè J. AU - Travis, Wendy J. T1 - Intimate partner physical injury risk assessment in a military sample. JF - Psychology of Violence JO - Psychology of Violence JA - Psychol Violence Y1 - 2016/10// VL - 6 IS - 4 SP - 529 EP - 541 CY - US PB - Educational Publishing Foundation SN - 2152-0828 SN - 2152-081X AD - Stith, Sandra M., School of Family Studies and Human Services, Kansas State University, 101 Campus Creek Complex, Manhattan, KS, US, 66506 N1 - Accession Number: 2015-55448-001. Partial author list: First Author & Affiliation: Stith, Sandra M.; School of Family Studies and Human Services, Kansas State University, Manhattan, KS, US. Release Date: 20151214. Correction Date: 20161006. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Stith, Sandra M. Major Descriptor: Injuries; Intimate Partner Violence; Measurement; Test Construction; Risk Assessment. Minor Descriptor: Military Personnel; Test Reliability; Test Validity. Classification: Health Psychology Testing (2226); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Spouse Physical Abuse Survey [Appended]; Repeat Incident Survey; Intimate Partner Physical Injury-Risk Assessment Tool. Methodology: Empirical Study; Quantitative Study. Page Count: 13. Issue Publication Date: Oct, 2016. Publication History: First Posted Date: Dec 14, 2015; Accepted Date: Oct 2, 2015; Revised Date: Aug 7, 2015; First Submitted Date: Sep 11, 2014. Copyright Statement: American Psychological Association. 2015. AB - Objectives: This paper describes the development of an actuarial risk assessment instrument (the Intimate Partner Physical Injury-Risk Assessment Tool; IPPI-RAT) designed to be used by military providers to assess the likelihood that an individual who has had an alleged incident of intimate partner violence (IPV) will have a subsequent incident resulting in a physical injury to the victim. Method: Providers used a 58-item structured risk assessment tool to assess individuals with alleged IPV incidents (N = 199). Across a 6-month period, alleged victims were asked to call an automated telephone system to report subsequent incidents of IPV and physical injury (N = 1,082 calls). An item analysis was used to select the items that significantly differentiated the 'physical injury' group from the 'other' group (i.e., comparison group). Results: Fifteen items from the 58-item tool significantly predicted future physical injury and were used to create a 15-item IPPI-RAT scale. The area under the curve (Area Under the Receiver Operator Curve, AUC) value for the tool was .78, 95% CI [.71, .86]. This AUC value indicates there is a 78% chance that a randomly selected member of the physical injury group would have a higher risk score than a randomly selected member of the 'other' (i.e., comparison) group. Conclusions: Findings support the tool’s utility for assessing risk for future physical injury as part of a comprehensive IPV risk assessment in reported IPV incidents in the military. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - military KW - risk assessment KW - intimate partner violence KW - physical injury KW - domestic violence KW - 2016 KW - Injuries KW - Intimate Partner Violence KW - Measurement KW - Test Construction KW - Risk Assessment KW - Military Personnel KW - Test Reliability KW - Test Validity KW - 2016 U1 - Sponsor: United States Department of Agriculture: National Institute of Food and Agriculture, US. Recipients: Stith, Sandra M.; Milner, Joel S. U1 - Sponsor: United States Army, US. Recipients: Stith, Sandra M.; Milner, Joel S. U1 - Sponsor: United States Air Force, US. Recipients: Stith, Sandra M.; Milner, Joel S. U1 - Sponsor: Department of Defense, US. Recipients: Stith, Sandra M.; Milner, Joel S. DO - 10.1037/a0039969 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-55448-001&site=ehost-live&scope=site UR - sstith@ksu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2016-29477-001 AN - 2016-29477-001 AU - Heyler, Scott G. AU - Armenakis, Achilles A. AU - Walker, Alan G. AU - Collier, Donovan Y. T1 - A qualitative study investigating the ethical decision making process: A proposed model. JF - The Leadership Quarterly JO - The Leadership Quarterly JA - Leadersh Q Y1 - 2016/10// VL - 27 IS - 5 SP - 788 EP - 801 CY - Netherlands PB - Elsevier Science SN - 1048-9843 SN - 1873-3409 AD - Heyler, Scott G. N1 - Accession Number: 2016-29477-001. Partial author list: First Author & Affiliation: Heyler, Scott G.; United States Air Force Academy, CO, US. Release Date: 20160616. Correction Date: 20161006. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Decision Making; Ethics; Leadership; Military Veterans. Classification: Management & Management Training (3640); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Semistructured Interview Schedule DOI: 10.1037/t15326-000. Methodology: Empirical Study; Interview; Qualitative Study. Page Count: 14. Issue Publication Date: Oct, 2016. Publication History: First Posted Date: Jun 9, 2016; Accepted Date: May 18, 2016; Revised Date: May 17, 2016; First Submitted Date: May 15, 2015. Copyright Statement: All rights reserved. Elsevier Inc. 2016. AB - We describe the results of a qualitative research study involving senior military and civilian leaders of the Department of Defense. We followed a grounded theory approach in proposing an inductive model which integrates the theories of ethics, decision making, and leadership with the experiences and formal training of our respondents. Our model accomplishes two purposes. First, it illustrates the complex nature of the intervening steps between moral awareness and ethical/unethical decision outcomes. Second, it depicts a process for developing ethical decision making expertise. The proposed model is intended to stimulate educators, training and development professionals, and practicing leaders to design and implement programs to develop ethical leader decision making. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - ethical decision making model KW - leader decision making KW - qualitative research KW - inductive model KW - grounded theory KW - 2016 KW - Decision Making KW - Ethics KW - Leadership KW - Military Veterans KW - 2016 DO - 10.1016/j.leaqua.2016.05.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-29477-001&site=ehost-live&scope=site UR - Dyc0001@auburn.edu UR - Agw0006@auburn.edu UR - armenac@auburn.edu UR - Scott.heyler@usafa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Sarkisov, G. S. AU - Caplinger, J. AU - Parada, F. AU - Sotnikov, V. I. T1 - Electrical explosion of Al and Ag wires in air at different pressures. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2016/09/28/ VL - 120 IS - 12 M3 - Article SP - 123303-1 EP - 123303-4 SN - 00218979 AB - Experiments with electrically exploding fine Al and Ag wires in air demonstrate a strong dependence of the expanding metal core condition and velocity on ambient pressure. Expansion velocity of the wire core varies by 23 times between ∼0.2 km/s and ∼4.6 km/s. The shock-wave velocity at atmospheric pressure is ∼5km/s and increases to ∼6 km/s when the pressure is decreased to 50 Torr. The condition of the metal core is strongly dependent on material and whether it is expanding into vacuum or against ambient air pressure. Expansion velocity of the fine Al and Ag wires for different surrounding pressures in general agree with Paschen's Law for air gap. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - NANOWIRES KW - NANOWIRE optical sensors KW - PLASMA (Ionized gases) KW - STATIC pressure N1 - Accession Number: 118516297; Sarkisov, G. S. 1 Caplinger, J. 2 Parada, F. 2 Sotnikov, V. I. 2; Affiliation: 1: Raytheon Ktech, Directed Energy Department, Albuquerque, New Mexico 87123, USA 2: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 2016, Vol. 120 Issue 12, p123303-1; Subject Term: AERODYNAMICS; Subject Term: NANOWIRES; Subject Term: NANOWIRE optical sensors; Subject Term: PLASMA (Ionized gases); Subject Term: STATIC pressure; Number of Pages: 4p; Illustrations: 2 Black and White Photographs, 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.4963117 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118516297&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stauffer, Hans U. AU - Roy, Sukesh AU - Schmidt, Jacob B. AU - Wrzesinski, Paul J. AU - Gord, James R. T1 - Two-color vibrational, femtosecond, fully resonant electronically enhanced CARS (FREE-CARS) of gas-phase nitric oxide. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2016/09/28/ VL - 145 IS - 12 M3 - Article SP - 1 EP - 14 SN - 00219606 AB - A resonantly enhanced, two-color, femtosecond time-resolved coherent anti-Stokes Raman scattering (CARS) approach is demonstrated and used to explore the nature of the frequency- and time-dependent signals produced by gas-phase nitric oxide (NO). Through careful selection of the input pulse wavelengths, this fully resonant electronically enhanced CARS (FREE-CARS) scheme allows rovibronic-state-resolved observation of time-dependent rovibrational wavepackets propagating on the vibrationally excited ground-state potential energy surface of this diatomic species. Despite the use of broadband, ultrafast time-resolved input pulses, high spectral resolution of gas-phase rovibronic transitions is observed in the FREE-CARS signal, dictated by the electronic dephasing timescales of these states. Analysis and computational simulation of the time-dependent spectra observed as a function of pump-Stokes and Stokes-probe delays provide insight into the rotationally resolved wavepacket motion observed on the excited-state and vibrationally excited ground-state potential energy surfaces of NO, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NITRIC oxide KW - FEMTOSECOND lasers KW - GAS phase reactions KW - VIBRATIONAL spectra KW - RAMAN scattering KW - POTENTIAL energy surfaces N1 - Accession Number: 118582408; Stauffer, Hans U. 1; Email Address: hans.stauffer@gmail.com Roy, Sukesh 1 Schmidt, Jacob B. 1 Wrzesinski, Paul J. 2 Gord, James R. 2; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield St., Suite 301, Dayton, Ohio 45431, USA 2: Aerospace Systems Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: 2016, Vol. 145 Issue 12, p1; Subject Term: NITRIC oxide; Subject Term: FEMTOSECOND lasers; Subject Term: GAS phase reactions; Subject Term: VIBRATIONAL spectra; Subject Term: RAMAN scattering; Subject Term: POTENTIAL energy surfaces; Number of Pages: 14p; Illustrations: 2 Diagrams, 2 Charts, 8 Graphs; Document Type: Article L3 - 10.1063/1.4962834 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118582408&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rafique, Subrina AU - Lu Han AU - Neal, Adam T. AU - Shin Mou AU - Tadjer, Marko J. AU - French, Roger H. AU - Hongping Zhao T1 - Heteroepitaxy of N-type β-Ga2O3 thin films on sapphire substrate by low pressure chemical vapor deposition. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2016/09/26/ VL - 109 IS - 13 M3 - Article SP - 132103-1 EP - 132103-5 SN - 00036951 AB - This paper presents the heteroepitaxial growth of ultrawide bandgap β-Ga2O3 thin films on c-plane sapphire substrates by low pressure chemical vapor deposition. N-type conductivity in silicon (Si)-doped β-Ga2O3 films grown on sapphire substrate is demonstrated. The thin films were synthesized using high purity metallic gallium (Ga) and oxygen (O2) as precursors. The morphology, crystal quality, and properties of the as-grown thin films were characterized and analyzed by field emission scanning electron microscopy, X-ray diffraction, electron backscatter diffraction, photoluminescence and optical, photoluminescence excitation spectroscopy, and temperature dependent van der Pauw/Hall measurement. The optical bandgap is ∼4.76 eV, and room temperature electron mobility of 42.35 cm²/V s was measured for a Si-doped heteroepitaxial β-Ga2O3 film with a doping concentration of 1.32×1018 cm-3. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM (Metal) KW - X-ray diffraction KW - SCANNING electron microscopy KW - THIN films KW - SILICON KW - ELECTRONS -- Backscattering KW - PHOTOLUMINESCENCE N1 - Accession Number: 118506019; Rafique, Subrina 1 Lu Han 1 Neal, Adam T. 2,3 Shin Mou 2 Tadjer, Marko J. 4 French, Roger H. 5 Hongping Zhao 1; Email Address: hongping.zhao@case.edu; Affiliation: 1: Department of Electrical Engineering and Computer Science, Case Western Reserve University, Cleveland, Ohio 44106, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 3: Universal Technology Corporation, Dayton, Ohio 45432, USA 4: United States Naval Research Laboratory, Washington, DC 20375, USA 5: Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, USA; Source Info: 2016, Vol. 109 Issue 13, p132103-1; Subject Term: GALLIUM (Metal); Subject Term: X-ray diffraction; Subject Term: SCANNING electron microscopy; Subject Term: THIN films; Subject Term: SILICON; Subject Term: ELECTRONS -- Backscattering; Subject Term: PHOTOLUMINESCENCE; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 5p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1063/1.4963820 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118506019&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Drummond, Jack D. AU - Reynolds, Odell R. AU - Buckman, Miles D. T1 - The orbit and size of (87) Sylvia’s Romulus from the 2015 apparition. JO - ICARUS JF - ICARUS Y1 - 2016/09/15/ VL - 276 M3 - Article SP - 107 EP - 115 SN - 00191035 AB - Using the US Air Force’s Starfire Optical Range 3.5 meter telescope with adaptive optics and a laser guidestar, we obtained 68 images of asteroid (87) Sylvia and its satellite Romulus over 6 nights in March and May of 2015. Adding an additional 3 images from earlier observations on one night in November 2012, we are able to derive a circular (but not an eccentric) orbit for Romulus, leading to a density for Sylvia of 1.37 ± 0.04 gm/cm 3 . Extending the time base to 14 years by combining our data with previous observations from Keck, HST, and the VLT reported in the literature, we can fit for a new circular orbit and change the density estimate slightly to 1.35 ± 0.04 gm/cm 3 . By fitting a ratio of two Fourier series to the measured magnitude difference between Sylvia (V=12.5) and Romulus, which ranged from 4.1 to 5.0 in the J-band ( λ = 1.2 μ m), and modeling both as triaxial ellipsoids, we are able to derive prolate spheroid equatorial diameters for Romulus of 41(±27) × 30(±16) km. This assumes that Romulus is rotating synchronously with its 3.64 d orbital period. However, decomposing the differential lightcurve between Sylvia and Romulus reveals a much shorter 7.96 hr rotational period, leading to more elongated prolate spheroid diameters of 82(±7) × 21(±2) km. As far as we know, our 3.5 m telescope is the smallest ground-based telescope to ever image any asteroid’s moon. [ABSTRACT FROM AUTHOR] AB - Copyright of ICARUS is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASTEROIDS KW - LASER guide star adaptive optics KW - PLANETARY orbits KW - TELESCOPES KW - FOURIER series KW - ELLIPSOIDS KW - Adaptive optics KW - Image processing KW - Satellites of asteroids N1 - Accession Number: 115824486; Drummond, Jack D. 1; Email Address: jack.drummond.1.ctr@us.af.mil Reynolds, Odell R. 1 Buckman, Miles D. 1; Affiliation: 1: Starfire Optical Range, Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117-5771, USA; Source Info: Sep2016, Vol. 276, p107; Subject Term: ASTEROIDS; Subject Term: LASER guide star adaptive optics; Subject Term: PLANETARY orbits; Subject Term: TELESCOPES; Subject Term: FOURIER series; Subject Term: ELLIPSOIDS; Author-Supplied Keyword: Adaptive optics; Author-Supplied Keyword: Image processing; Author-Supplied Keyword: Satellites of asteroids; NAICS/Industry Codes: 453999 All other miscellaneous store retailers (except beer and wine-making supplies stores); NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.icarus.2016.04.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115824486&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Moen, E. K. AU - Ibey, B. L. AU - Beier, H. T. AU - Armani, A. M. T1 - Investigating membrane nanoporation induced by bipolar pulsed electric fields via second harmonic generation. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2016/09/12/ VL - 109 IS - 11 M3 - Article SP - 113701-1 EP - 113701-4 SN - 00036951 AB - Electric pulses have become an effective tool for transporting cargo (DNA, drugs, etc.) across cell membranes. This enhanced transport is believed to occur through temporary pores formed in the plasma membrane. Traditionally, millisecond duration, monopolar (MP) pulses are used for electroporation, but bipolar (BP) pulses have proven equally effective as MP pulses with the added advantage of less cytotoxicity. With the goal of further reducing cytotoxic effects and inducing non-thermal, intra-cellular effects, researchers began investigating reduced pulse durations, pushing into the nanosecond regime. Cells exposed to these MP, nanosecond pulsed electric fields (nsPEFs) have shown increased repairable membrane permeability and selective channel activation. However, attempts to improve this further by moving to the BP pulse regime has proven unsuccessful. In the present work, we use second harmonic generation imaging to explore the structural effects of bipolar nsPEFs on the plasma membrane. By varying the temporal spacing between the pulse phases over several orders of magnitude and comparing the response to a single MP case, we systematically examine the disparity in cellular response. Our circuit-based model predicts that, as the temporal spacing increases several orders of magnitude, nanoporation increases and eventually exceeds the MP case. On the whole, our experimental data agree with this assertion; however, a detailed analysis of the data sets demonstrates that biological processes may play a larger role in the observed response than previously thought, dominating the effect for temporal spacing up to 5 μs. These findings could ultimately lead to understanding the biophysical mechanism underlying all electroporation. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CELL membranes KW - BIPOLAR cells KW - CELL-mediated cytotoxicity KW - HARMONICS (Electric waves) KW - ELECTRIC fields N1 - Accession Number: 118199481; Moen, E. K. 1; Email Address: emoen@usc.edu Ibey, B. L. 2 Beier, H. T. 2 Armani, A. M. 1; Email Address: armani@usc.edu; Affiliation: 1: Ming Hsieh Department of Electrical Engineering-Electrophysics, University of Southern California, Los Angeles, California 90089, USA 2: Bioeffects Division, 711 Human Performance Wing, Air Force Research Laboratory, 4141 Petroleum Rd., San Antonio, Texas 78234, USA; Source Info: 9/12/2016, Vol. 109 Issue 11, p113701-1; Subject Term: CELL membranes; Subject Term: BIPOLAR cells; Subject Term: CELL-mediated cytotoxicity; Subject Term: HARMONICS (Electric waves); Subject Term: ELECTRIC fields; Number of Pages: 4p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.4962839 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118199481&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aramoon, Amin AU - Breitzman, Timothy D. AU - Woodward, Christopher AU - El-Awady, Jaafar A. T1 - Coarse-Grained Molecular Dynamics Study of the Curing and Properties of Highly Cross-Linked Epoxy Polymers. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2016/09/08/ VL - 120 IS - 35 M3 - Article SP - 9495 EP - 9505 SN - 15206106 AB - In this work, a coarse-grained model is developed for highly cross-linked bisphenol A diglycidyl ether epoxy resin with diaminobutane hardener. In this model, all conformationally relevant coarse-grained degrees of freedom are accounted for by sampling over the free-energy surfaces of the atomic structures using quantum mechanical simulations. The interaction potentials between nonbonded coarse-grained particles are optimized to accurately predict the experimentally measured density and glass-transition temperature of the system. In addition, a new curing algorithm is also developed to model the creation of highly cross-linked epoxy networks. In this algorithm, to create a highly cross-linked network, the reactants are redistributed from regions with an excessive number of reactive molecules to regions with a lower number of reactants to increase the chances of cross-linking. This new algorithm also dynamically controls the rate of cross-linking at each local region to ensure uniformity of the resulting network. The curing simulation conducted using this algorithm is able to develop polymeric networks having a higher average degree of cross-linking, which is more uniform throughout the simulation cell as compared to that in the networks cured using other curing algorithms. The predicted gel point from the current curing algorithm is in the acceptable theoretical and experimental range of measured values. Also, the resulting cross-linked microstructure shows a volume shrinkage of 5%, which is close to the experimentally measured volume shrinkage of the cured epoxy. Finally, the thermal expansion coefficients of materials in the glassy and rubbery states show good agreement with the experimental values. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR dynamics KW - CURING KW - METHODOLOGY KW - EPOXIDATION KW - POLYMERIC composites KW - THERMAL expansion N1 - Accession Number: 118037220; Aramoon, Amin 1; Email Address: aaramoo1@jhu.edu Breitzman, Timothy D. 2 Woodward, Christopher 2 El-Awady, Jaafar A. 1; Email Address: jelawady@jhu.edu; Affiliation: 1: Department of Mechanical Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, United States; Source Info: Sep2016, Vol. 120 Issue 35, p9495; Subject Term: MOLECULAR dynamics; Subject Term: CURING; Subject Term: METHODOLOGY; Subject Term: EPOXIDATION; Subject Term: POLYMERIC composites; Subject Term: THERMAL expansion; Number of Pages: 11p; Document Type: Article L3 - 10.1021/acs.jpcb.6b03809 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118037220&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haoxiang Huang AU - Liang Chen AU - Varshney, Vikas AU - Roy, Ajit K. AU - Kumar, Satish T1 - Investigation of phonon transport and thermal boundary conductance at the interface of functionalized SWCNT and poly (ether-ketone). JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2016/09/07/ VL - 120 IS - 9 M3 - Article SP - 1 EP - 9 SN - 00218979 AB - Carbon nanostructures such as carbon nanotube (CNT), graphene, and carbon fibers can be used as fillers in amorphous polymers to improve their thermal properties. In this study, the effect of covalent bonding of CNT with poly(ether ketone) (PEK) on interfacial thermal interactions is investigated using non-equilibrium molecular dynamics simulations. The number of covalent bonds between (20, 20) CNT and PEK is varied in the range of 0-80 (0%-6.25%), and the thermal boundary conductance is computed. The analysis reveals that covalent functionalization of CNT atoms can enhance the thermal boundary conductance by an order of magnitude compared to the nonfunctionalized CNT-PEK interface at a high degree of CNT functionalization. Besides strengthening the thermal coupling, covalent functionalization is also shown to modify the phonon spectra of CNT. The transient spectral energy analysis shows that the crosslinks cause faster energy exchange from CNT to PEK in different frequency bands. The oxygen atom of hydroxyl group of PEK contributes energy transfer in the low frequency band, while aromatic and carbonyl carbon atoms play a more significant role in high frequency bands. In addition, by analyzing the relaxation time of the spectral temperature of different frequency bands of CNT, it is revealed that with increasing number of bonds, both lower frequency vibrational modes and higher frequency modes efficiently couple across the CNT-PEK interface and contribute in thermal energy transfer from CNT to the matrix. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - GRAPHENE KW - CARBON fibers KW - THERMAL properties KW - ENERGY transfer N1 - Accession Number: 117943854; Haoxiang Huang 1 Liang Chen 2 Varshney, Vikas 3,4 Roy, Ajit K. 3 Kumar, Satish 1; Email Address: satish.kumar@me.gatech.edu; Affiliation: 1: G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA 2: School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, USA 4: Universal Technology Corporation, Dayton, Ohio 45432, USA; Source Info: 9/7/2016, Vol. 120 Issue 9, p1; Subject Term: CARBON nanotubes; Subject Term: GRAPHENE; Subject Term: CARBON fibers; Subject Term: THERMAL properties; Subject Term: ENERGY transfer; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 9p; Illustrations: 3 Diagrams, 1 Chart, 6 Graphs; Document Type: Article L3 - 10.1063/1.4961604 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117943854&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chateau, Denis AU - Liotta, Adrien AU - Lundén, Hampus AU - Lerouge, Frederic AU - Chaput, Frederic AU - Krein, Douglas AU - Cooper, Thomas AU - Lopes, Cesar AU - El-Amay, Ali A. G. AU - Lindgren, Mikael AU - Parola, Stephane T1 - Long Distance Enhancement of Nonlinear Optical Properties Using Low Concentration of Plasmonic Nanostructures in Dye Doped Monolithic Sol-Gel Materials. JO - Advanced Functional Materials JF - Advanced Functional Materials Y1 - 2016/09/06/ VL - 26 IS - 33 M3 - Article SP - 6005 EP - 6014 SN - 1616301X AB - Monolithic sol-gel silica composites incorporating platinum-based chromophores and various types of gold nanoparticles (AuNPs) are prepared and polished to high optical quality. Their photophysical properties are investigated. The glass materials show well-defined localized surface plasmon resonance (SPR) absorbance from the visible to NIR. No redshifts of the AuNP plasmon absorption peaks due to the increase in nanoparticle doping concentration are observed in the glasses, proving that no or very small SPR coupling effects occur between the AuNPs. At 600 nm excitation, but not at 532 nm, the AuNPs improve the nonlinear absorption performance of glasses codoped with 50 × 10−3 m of a Pt-acetylide chromophore. The glasses doped with lower concentrations of AuNPs (2-5 μm average distance) and 50 × 10−3 m in chromophore, show a marked improvement in nonlinear absorption, with no or only small improvement for the more highly AuNP doped glasses. This study shows the importance of excitation wavelength and nanoparticle concentration for composite systems employing AuNPs to improve two-photon absorption of chromophores. [ABSTRACT FROM AUTHOR] AB - Copyright of Advanced Functional Materials is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GOLD nanoparticles -- Synthesis KW - NONLINEAR optics KW - PLASMONS (Physics) KW - NANOSTRUCTURED materials -- Research KW - SOL-gel materials KW - hybrid material KW - nonlinear absorption KW - nonlinear optics KW - plasmon KW - sol-gel N1 - Accession Number: 117901220; Chateau, Denis 1 Liotta, Adrien 1 Lundén, Hampus 2 Lerouge, Frederic 1 Chaput, Frederic 1 Krein, Douglas 3 Cooper, Thomas 3 Lopes, Cesar 2 El-Amay, Ali A. G. 4 Lindgren, Mikael 4 Parola, Stephane 1; Affiliation: 1: Laboratoire de Chimie, Université de Lyon, Ecole Normale Supérieure de Lyon, Université Claude Bernard Lyon 1 2: Electrooptical Systems, Swedish Defence Research Agency (FOI) 3: Air Force Research Laboratory 4: Department on Physics, Norwegian University of Science and Technology; Source Info: 9/6/2016, Vol. 26 Issue 33, p6005; Subject Term: GOLD nanoparticles -- Synthesis; Subject Term: NONLINEAR optics; Subject Term: PLASMONS (Physics); Subject Term: NANOSTRUCTURED materials -- Research; Subject Term: SOL-gel materials; Author-Supplied Keyword: hybrid material; Author-Supplied Keyword: nonlinear absorption; Author-Supplied Keyword: nonlinear optics; Author-Supplied Keyword: plasmon; Author-Supplied Keyword: sol-gel; Number of Pages: 10p; Document Type: Article L3 - 10.1002/adfm.201601646 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117901220&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Demasi, Luciano AU - Santarpia, Enrico AU - Dipace, Antonio AU - Cavallaro, Rauno AU - Gordnier, Raymond E. T1 - Aerodynamic and Structural Studies of a Flapping Wing in Forward Flight. JO - AIAA Journal JF - AIAA Journal Y1 - 2016/09// VL - 54 IS - 9 M3 - Article SP - 2768 EP - 2781 SN - 00011452 AB - Flapping flight is commonly seen in nature at low Reynolds numbers. This work investigates the physical aspects of forward flight for flapping unmanned aerial systems. The kinematics discussed in this paper is based on an anticlockwise figure-8-shaped flapping cycle. The evolution of the complex, unsteady vortical flow system that develops during the flapping motion is presented. Mechanisms for generating the lift and thrust are discussed, with emphasis on the unsteadiness of the flow features during both the downstroke and upstroke phases. A one-way fluid-structure interaction has been investigated, and the relative importance of aerodynamic forces is compared with respect to the inertial forces. The inhomogeneity of the wing in terms of mass distribution is studied, and it is shown that a higher density at the wing root is beneficial in respect to the mechanical power required to achieve the forward flight. Limited benefit is observed when higher material density at the leading edge is adopted. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 117719480; Demasi, Luciano 1 Santarpia, Enrico 1 Dipace, Antonio 1 Cavallaro, Rauno 1 Gordnier, Raymond E. 2; Affiliation: 1: San Diego State University, San Diego, California 92182 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7512; Source Info: Sep2016, Vol. 54 Issue 9, p2768; Number of Pages: 14p; Document Type: Article L3 - 10.2514/1.J054496 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117719480&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cheng Huang AU - Anderson, William E. AU - Harvazinski, Matthew E. AU - Sankaran, Venkateswaran T1 - Analysis of Self-Excited Combustion Instabilities Using Decomposition Techniques. JO - AIAA Journal JF - AIAA Journal Y1 - 2016/09// VL - 54 IS - 9 M3 - Article SP - 2791 EP - 2807 SN - 00011452 AB - Proper orthogonal decomposition and dynamic mode decomposition are evaluated for the study of self-excited longitudinal combustion instabilities in laboratory-scaled single-element gas turbine and rocket combustors. Since each proper orthogonal decomposition mode comprises multiple frequencies, specific modes of the pressure and heat release are not related, which makes the analysis more qualitative and less efficient for identifying physical mechanisms. On the other hand, dynamic mode decomposition analysis generates a global frequency spectrum in which each mode corresponds to a specific discrete frequency so that different dynamics can be correlated. In addition, proper orthogonal decomposition results are found to be inaccurate when only a limited amount of spatial information is provided in contrast with dynamic mode decomposition results, which provide more reliable results. Overall, dynamic mode decomposition analysis proves to be a robust and systematic method that can give consistent interpretations of the periodic physics underlying combustion instabilities. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 117719482; Cheng Huang 1 Anderson, William E. 1 Harvazinski, Matthew E. 2 Sankaran, Venkateswaran 2; Affiliation: 1: Purdue University, West Lafayette, Indiana 47907 2: U.S. Air Force Research Laboratory, Edwards Air Force Base, California 93524; Source Info: Sep2016, Vol. 54 Issue 9, p2791; Number of Pages: 17p; Document Type: Article L3 - 10.2514/1.J054557 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117719482&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reshetnyak, V. Yu. AU - Pinkevych, I. P. AU - Subota, S. I. AU - Evans, D. R. T1 - Two beam energy exchange in hybrid liquid crystal cells with photorefractive field controlled boundary conditions. JO - AIP Advances JF - AIP Advances Y1 - 2016/09// VL - 6 IS - 9 M3 - Article SP - 1 EP - 9 SN - 21583226 AB - We develop a theory describing energy gain when two light beams intersect in a hybrid nematic liquid crystal (LC) cell with photorefractive crystalline substrates. A periodic space-charge field induced by interfering light beams in the photorefractive substrates penetrates into the LC layer and reorients the director. We account for two main mechanisms of the LC director reorientation: the interaction of the photorefractive field with the LC flexopolarization and the director easy axis at the cell boundaries. It is shown that the resulting director grating is a sum of two in-phase gratings: the flexoelectric effect driven grating and the boundary-driven grating. Each light beam diffracts from the induced gratings leading to an energy exchange between beams. We evaluate the signal beam gain coefficient and analyze its dependence on the director anchoring energy and the magnitude of the director easy axis modulation. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Advances is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - PHOTOREFRACTIVE effect KW - FLEXOELECTRICITY N1 - Accession Number: 118531219; Reshetnyak, V. Yu. 1 Pinkevych, I. P. 1; Email Address: ipinkevych@gmail.com Subota, S. I. 1 Evans, D. R. 2; Affiliation: 1: Physics Faculty, National Taras Shevchenko University of Kyiv, Volodymyrska Street 64, Kyiv 01601, Ukraine 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: 2016, Vol. 6 Issue 9, p1; Subject Term: LIQUID crystals; Subject Term: PHOTOREFRACTIVE effect; Subject Term: FLEXOELECTRICITY; Number of Pages: 9p; Document Type: Article L3 - 10.1063/1.4962936 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118531219&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tang, Wilkin W. AU - Shiffler, Donald A. AU - Harris, John R. AU - Jensen, Kevin L. AU - Golby, Ken AU - LaCour, Matthew AU - Knowles, Tim T1 - Field emission characteristics of a small number of carbon fiber emitters. JO - AIP Advances JF - AIP Advances Y1 - 2016/09// VL - 6 IS - 9 M3 - Article SP - 1 EP - 9 SN - 21583226 AB - This paper reports an experiment that studies the emission characteristics of small number of field emitters. The experiment consists of nine carbon fibers in a square configuration. Experimental results showthat the emission characteristics depend strongly on the separation between each emitter, providing evidence of the electric field screening effects. Our results indicate that as the separation between the emitters decreases, the emission current for a given voltage also decreases. The authors compare the experimental results to four carbon fiber emitters in a linear and square configurations as well as to two carbon fiber emitters in a paired array. Voltage-current traces show that the turn-on voltage is always larger for the nine carbon fiber emitters as compared to the two and four emitters in linear configurations, and approximately identical to the four emitters in a square configuration. The observations and analysis reported here, based on Fowler-Nordheim field emission theory, suggest the electric field screening effect depends critically on the number of emitters, the separation between them, and their overall geometric configuration. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Advances is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIELD emission KW - CARBON fibers KW - EMITTER-coupled logic circuits N1 - Accession Number: 118531166; Tang, Wilkin W. 1 Shiffler, Donald A. 1 Harris, John R. 1 Jensen, Kevin L. 2 Golby, Ken 3 LaCour, Matthew 3 Knowles, Tim 4; Affiliation: 1: Air Force Research Laboratory/Directed Energy Directorate, Albuquerque, New Mexico 87117, USA 2: Code 6364, Naval Research Laboratory, Washington, DC 20375, USA 3: Leidos, Inc., Albuquerque, New Mexico 87117, USA 4: Energy Science Laboratories, Inc., San Diego, California 92121, USA; Source Info: 2016, Vol. 6 Issue 9, p1; Subject Term: FIELD emission; Subject Term: CARBON fibers; Subject Term: EMITTER-coupled logic circuits; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1063/1.4962921 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118531166&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Winarski, D. J. AU - Anwand, W. AU - Wagner, A. AU - Saadatkia, P. AU - Selim, F. A. AU - Allen, M. AU - Wenner, B. AU - Leedy, K. AU - Allen, J. AU - Tetlak, S. AU - Look, D. C. T1 - Induced conductivity in sol-gel ZnO films by passivation or elimination of Zn vacancies. JO - AIP Advances JF - AIP Advances Y1 - 2016/09// VL - 6 IS - 9 M3 - Article SP - 1 EP - 9 SN - 21583226 AB - Undoped and Ga- and Al- doped ZnO films were synthesized using sol-gel and spin coating methods and characterized by X-ray diffraction, high-resolution scanning electron microscopy (SEM), optical spectroscopy and Hall-effect measurements. SEM measurements reveal an average grain size of 20 nm and distinct individual layer structure. Measurable conductivity was not detected in the unprocessed films; however, annealing in hydrogen or zinc environment induced significant conductivity (~10-2 Ωcm) in most films. Positron annihilation spectroscopy measurements provided strong evidence that the significant enhancement in conductivity was due to hydrogen passivation of Zn vacancy related defects or elimination of Zn vacancies by Zn interstitials which suppress their role as deep acceptors. Hydrogen passivation of cation vacancies is shown to play an important role in tuning the electrical conductivity of ZnO, similar to its role in passivation of defects at the Si/SiO2 interface that has been essential for the successful development of complementary metal-oxide-semiconductor (CMOS) devices. By comparison with hydrogen effect on other oxides, we suggest that hydrogen may play a universal role in oxides passivating cation vacancies and modifying their electronic properties. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Advances is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOL-gel processes KW - ZINC oxide films KW - X-ray diffraction N1 - Accession Number: 118531163; Winarski, D. J. 1 Anwand, W. 2 Wagner, A. 2 Saadatkia, P. 1 Selim, F. A. 1; Email Address: faselim@bgsu.edu Allen, M. 3 Wenner, B. 4 Leedy, K. 4 Allen, J. 3 Tetlak, S. 4 Look, D. C. 4; Affiliation: 1: Department of Physics and Astronomy, Bowling Green State University, Bowling Green, Ohio 43403, USA 2: Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, 01328 Dresden, Germany 3: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, USA 4: Air Force Research Laboratory Sensors Directorate, Wright-Patterson Air Force Base, Ohio, 45431, USA; Source Info: 2016, Vol. 6 Issue 9, p1; Subject Term: SOL-gel processes; Subject Term: ZINC oxide films; Subject Term: X-ray diffraction; Number of Pages: 9p; Document Type: Article L3 - 10.1063/1.4962658 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118531163&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - BRISSETT, WILSON T1 - JONATHAN EDWARDS'S WHITE THEOLOGY. JO - ELH JF - ELH Y1 - 2016///Fall2016 VL - 83 IS - 3 M3 - Essay SP - 711 EP - 740 SN - 00138304 AB - The essay talks about the book "A History of the Work of Redemption" by Jonathan Edwards, as a literary project in constructing an innovative early evangelical historical imaginary. Topics discussed include this being an alternate way to understand the significance of Edwards for American culture, Edwards being a proto-Emersonian Romantic, and Edwards as an innovator in developing evangelicalism. KW - EVANGELICALISM -- History KW - EVANGELICALISM KW - THEOLOGY KW - UNITED States KW - EDWARDS, Jonathan, 1703-1758 KW - HISTORY of the Work of Redemption, A (Book) N1 - Accession Number: 117972702; BRISSETT, WILSON 1; Affiliation: 1: United States Air Force Academy; Source Info: Fall2016, Vol. 83 Issue 3, p711; Subject Term: EVANGELICALISM -- History; Subject Term: EVANGELICALISM; Subject Term: THEOLOGY; Subject Term: UNITED States; Reviews & Products: HISTORY of the Work of Redemption, A (Book); People: EDWARDS, Jonathan, 1703-1758; Number of Pages: 30p; Document Type: Essay UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117972702&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - O’Hara, P. AU - Duarte, C.A. AU - Eason, T. T1 - A two-scale generalized finite element method for interaction and coalescence of multiple crack surfaces. JO - Engineering Fracture Mechanics JF - Engineering Fracture Mechanics Y1 - 2016/09// VL - 163 M3 - Article SP - 274 EP - 302 SN - 00137944 AB - This paper presents the application of a two-scale generalized finite element method ( GFEM ) which allows for static fracture analyses as well as fatigue crack propagation simulations involving the interaction of multiple crack surfaces on fixed, coarse finite element (FE) meshes. The approach is based on the use of numerically-generated enrichment functions computed on-the-fly through the use of locally-defined boundary value problems (BVPs) in the regions of existing mechanically-short cracks. The two-scale GFEM approach is verified against analytical reference solutions as well as alternative numerical approaches for crack interaction problems, including the coalescence of multiple crack surfaces. The numerical examples demonstrate the ability of the proposed approach to deliver accurate results even in scenarios involving multiple, interacting discontinuities contained within a single computational element. The proposed approach is also applied to a crack shielding/crack arrest problem involving two propagating crack surfaces in a representative panel model similar in complexity to that which may be of interest to the aerospace community. [ABSTRACT FROM AUTHOR] AB - Copyright of Engineering Fracture Mechanics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRACK propagation (Fracture mechanics) KW - COALESCENCE (Chemistry) KW - SURFACES (Physics) KW - FRACTURE mechanics KW - FINITE element method KW - BOUNDARY value problems KW - Crack coalescence KW - Crack interaction KW - Enriched finite element methods KW - G/XFEM KW - Multi-scale methods N1 - Accession Number: 117735723; O’Hara, P. 1; Email Address: patrick.ohara.3.ctr@us.af.mil Duarte, C.A. 2 Eason, T. 3; Affiliation: 1: Universal Technology Corporation, 1270 North Fairfield Rd, Dayton, OH 45432, USA 2: Dept. of Civil and Environmental Engineering, University of Illinois, Newmark Laboratory, 205 North Mathews Avenue, Urbana, IL 61801, USA 3: Structural Sciences Center, Air Force Research Laboratory, WPAFB, OH 45433, USA; Source Info: Sep2016, Vol. 163, p274; Subject Term: CRACK propagation (Fracture mechanics); Subject Term: COALESCENCE (Chemistry); Subject Term: SURFACES (Physics); Subject Term: FRACTURE mechanics; Subject Term: FINITE element method; Subject Term: BOUNDARY value problems; Author-Supplied Keyword: Crack coalescence; Author-Supplied Keyword: Crack interaction; Author-Supplied Keyword: Enriched finite element methods; Author-Supplied Keyword: G/XFEM; Author-Supplied Keyword: Multi-scale methods; Number of Pages: 29p; Document Type: Article L3 - 10.1016/j.engfracmech.2016.06.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117735723&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 117160790 T1 - The Independence and Interdependence of Coacting Observers in Regard to Performance Efficiency, Workload, and Stress in a Vigilance Task. AU - Funke, Gregory J. AU - Warm, Joel S. AU - Baldwin, Carryl L. AU - Garcia, Andre AU - Funke, Matthew E. AU - Dillard, Michael B. AU - Finomore, Victor S. AU - Matthews, Gerald AU - Greenlee, Eric T. Y1 - 2016/09// N1 - Accession Number: 117160790. Language: English. Entry Date: In Process. Revision Date: 20160806. Publication Type: Article. Journal Subset: Biomedical; Peer Reviewed; USA. NLM UID: 0374660. SP - 915 EP - 926 JO - Human Factors JF - Human Factors JA - HUM FACTORS VL - 58 IS - 6 PB - Sage Publications Inc. AB - Objective: We investigated performance, workload, and stress in groups of paired observers who performed a vigilance task in a coactive (independent) manner.Background: Previous studies have demonstrated that groups of coactive observers detect more signals in a vigilance task than observers working alone. Therefore, the use of such groups might be effective in enhancing signal detection in operational situations. However, concern over appearing less competent than one's cohort might induce elevated levels of workload and stress in coactive group members and thereby undermine group performance benefits. Accordingly, we performed the initial experiment comparing workload and stress in observers who performed a vigilance task coactively with those of observers who performed the vigilance task alone.Method: Observers monitored a video display for collision flight paths in a simulated unmanned aerial vehicle control task. Self-reports of workload and stress were secured via the NASA-Task Load Index and the Dundee Stress State Questionnaire, respectively.Results: Groups of coactive observers detected significantly more signals than did single observers. Coacting observers did not differ significantly from those operating by themselves in terms of workload but did in regard to stress; posttask distress was significantly lower for coacting than for single observers.Conclusion: Performing a visual vigilance task in a coactive manner with another observer does not elevate workload above that of observers working alone and serves to attenuate the stress associated with vigilance task performance.Application: The use of coacting observers could be an effective vehicle for enhancing performance efficiency in operational vigilance. SN - 0018-7208 AD - Air Force Research Laboratory, Wright�Patterson Air Force Base, Ohio AD - George Mason University, Fairfax, Virginia AD - Northrop Grumman Corporation, Melbourne, Florida AD - Naval Medical Research Unit Dayton, Wright-Patterson Air Force Base, Ohio AD - Honeywell International, Inc., Golden Valley, Minnesota AD - United States Air Force Academy, Colorado AD - University of Central Florida, Orlando AD - National Research Council, Wright-Patterson Air Force Base, Ohio U2 - PMID: 27150529. DO - 10.1177/0018720816646657 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=117160790&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Yao, Gang AU - Pellizzoni, Rodolfo AU - Bak, Stanley AU - Yun, Heechul AU - Caccamo, Marco T1 - Global Real-Time Memory-Centric Scheduling for Multicore Systems. JO - IEEE Transactions on Computers JF - IEEE Transactions on Computers Y1 - 2016/09// VL - 65 IS - 9 M3 - Article SP - 2739 EP - 2751 SN - 00189340 AB - As the number of cores increases, more master components can simultaneously access main memory. In real-time systems, this ongoing trend is leading to crippling pessimism when computing the worst-case cache miss time, since a memory request could potentially contend with other requests coming from every other core in the system. CPU-centric scheduling policies, therefore, are no longer sufficient to guarantee schedulability without introducing unacceptable pessimism for memory-intensive task sets. For this reason, we believe a shift is needed towards real-time scheduling approaches that can prevent timing interference from memory contention, while still making efficient use of the multicore platform. Previously, we have demonstrated the practicality of the PREM task model, where each job consists of a sequence of phases, some of which access memory and some of which perform only computation on cached data. In this work, we present the first global memory-centric scheduling policy for memory-intensive task sets whose jobs can be modeled as a sequence of memory-intensive (memory phase) and execution-intensive (execution phase) phases. The proposed policy is parameterizable based on the number of cores which are allowed to concurrently access main memory without saturating it. Building upon results from multicore response-time analysis, we introduce the notion of virtual memory cores as a fundamental technique for performing phase-based response time analysis for memory-intensive task sets. Finally, we use synthetic task set generation to demonstrate that proposed scheduling policy and related schedulability bound do indeed better schedule memory-intensive task sets when compared to state-of-art multicore scheduling. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Computers is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER storage devices KW - COMPUTER scheduling KW - CENTRAL processing units (Computers) KW - MULTICORE processors (Computers) KW - MEMORY management (Computer science) KW - Computational modeling KW - global multicore schedulability analysis KW - Interference KW - memory centric scheduling KW - Memory management KW - Multicore processing KW - Processor scheduling KW - Real-time system KW - Real-time systems KW - Time factors N1 - Accession Number: 117371996; Yao, Gang 1 Pellizzoni, Rodolfo 2 Bak, Stanley 3 Yun, Heechul 4 Caccamo, Marco 1; Affiliation: 1: Department of Computer Science, University of Illinois at Urbana-Champaign, Urbana, IL 2: Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON, Canada 3: United States Air Force Research Lab, Rome, NY 4: Department of Electrical Engineering and Computer Science, University of Kansas, Lawrence, KS; Source Info: Sep2016, Vol. 65 Issue 9, p2739; Subject Term: COMPUTER storage devices; Subject Term: COMPUTER scheduling; Subject Term: CENTRAL processing units (Computers); Subject Term: MULTICORE processors (Computers); Subject Term: MEMORY management (Computer science); Author-Supplied Keyword: Computational modeling; Author-Supplied Keyword: global multicore schedulability analysis; Author-Supplied Keyword: Interference; Author-Supplied Keyword: memory centric scheduling; Author-Supplied Keyword: Memory management; Author-Supplied Keyword: Multicore processing; Author-Supplied Keyword: Processor scheduling; Author-Supplied Keyword: Real-time system; Author-Supplied Keyword: Real-time systems; Author-Supplied Keyword: Time factors; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 334112 Computer Storage Device Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1109/TC.2015.2500572 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117371996&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Iskrenova, E.K. AU - Patnaik, S.S. T1 - Solvent effects in the thermal decomposition reaction of ammonium carbamate: A computational molecular dynamics study of the relative solubilities of CO2 and NH3 in water, ethylene glycol, and their mixtures. JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2016/09// VL - 100 M3 - Article SP - 224 EP - 230 SN - 00179310 AB - The endothermic decomposition of ammonium carbamate has been proposed as a novel heat sink mechanism for aircraft thermal management (Johnson et al., 2012). The products of the reversible decomposition are carbon dioxide and ammonia which need to be efficiently removed from the carrier fluid in order to better control the reaction and thus the heat transfer. Molecular dynamics simulations can provide insight into the transport properties of carbon dioxide and ammonia in the carrier fluid. In this work, extensive classical non-reactive molecular dynamics simulations were carried out to explore the solvent effects in the thermal decomposition reaction of ammonium carbamate by studying the temperature and concentration dependence of relative solubility and diffusivity of carbon dioxide and ammonia in water, ethylene glycol, and their mixtures at standard temperature and pressure and at the elevated temperature of the thermal decomposition reaction of ammonium carbamate. This comparative study shows that ammonia is more soluble than carbon dioxide in either water or ethylene glycol and that both carbon dioxide and ammonia are more soluble in ethylene glycol than in water. Our simulations of water–ethylene glycol mixtures show that increasing the molar fraction of ethylene glycol leads to increased solubility of carbon dioxide and ammonia in the mixture. Even though this is a non-reactive study, it is able to capture the general solubility trends. Accounting for the reactions of carbon dioxide and ammonia in the solution would further amplify the observed trends by amplifying the retaining of CO 2 and NH 3 in the solution. We present a low-cost computational procedure for relative solubility evaluation that can be used in a broader engineering design context. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AMMONIUM compounds KW - SOLVENTS KW - DECOMPOSITION (Chemistry) KW - CHEMICAL reactions KW - COMPUTATIONAL chemistry KW - SOLUBILITY KW - CARBON dioxide KW - ETHYLENE glycol KW - Ammonia KW - Ammonium carbamate KW - Carbon dioxide KW - Ethylene glycol KW - Heat exchanger KW - Molecular dynamics simulations KW - Solubility KW - Solvent effects KW - Volume expansion N1 - Accession Number: 115800671; Iskrenova, E.K. 1,2; Email Address: Eugeniya.Iskrenova-Ekiert.1.ctr@us.af.mil Patnaik, S.S. 1; Email Address: Soumya.Patnaik.1@us.af.mil; Affiliation: 1: Aerospace Systems Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA 2: UES, Inc., Dayton, OH 45432, USA; Source Info: Sep2016, Vol. 100, p224; Subject Term: AMMONIUM compounds; Subject Term: SOLVENTS; Subject Term: DECOMPOSITION (Chemistry); Subject Term: CHEMICAL reactions; Subject Term: COMPUTATIONAL chemistry; Subject Term: SOLUBILITY; Subject Term: CARBON dioxide; Subject Term: ETHYLENE glycol; Author-Supplied Keyword: Ammonia; Author-Supplied Keyword: Ammonium carbamate; Author-Supplied Keyword: Carbon dioxide; Author-Supplied Keyword: Ethylene glycol; Author-Supplied Keyword: Heat exchanger; Author-Supplied Keyword: Molecular dynamics simulations; Author-Supplied Keyword: Solubility; Author-Supplied Keyword: Solvent effects; Author-Supplied Keyword: Volume expansion; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2016.04.050 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115800671&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, N. C. AU - Albrecht, J. D. AU - Grupen, M. T1 - Delaunay-Voronoi surface integration: a full-wave electromagnetics discretization for electronic device simulation. JO - International Journal of Numerical Modelling JF - International Journal of Numerical Modelling Y1 - 2016/09//Sep/Oct2016 VL - 29 IS - 5 M3 - Article SP - 817 EP - 830 SN - 08943370 AB - A promising time domain electromagnetics numerical method for treating the highly nonlinear problem of charge transport in electronic devices called Delaunay-Voronoi surface integration is presented. This method couples the rotational electric and magnetic fields governed by Ampere's and Faraday's laws with the electrostatic potential dictated by Poisson's equation in a simultaneous solution. Discretization of the governing equations using dual meshes and the relevant boundary conditions are presented. The engineering application details specific to electronic device simulation are treated, and an example calculation is shown to compare with an analytical solution for propagation in a waveguide. Benchmark results are presented for the rotational equations, Poisson's equation, and the complete set of electromagnetic equations. Copyright © 2016 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Numerical Modelling is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VORONOI polygons KW - SURFACE geometry KW - ELECTROMAGNETIC waves KW - ELECTRONIC apparatus & appliances KW - SIMULATION methods & models KW - Delaunay-Voronoi surface integration KW - electronic device simulation KW - full-wave electromagnetics KW - numerical simulation KW - time-domain KW - unstructured mesh N1 - Accession Number: 117169307; Miller, N. C. 1 Albrecht, J. D. 1 Grupen, M. 2; Affiliation: 1: Department of Electrical and Computer Engineering, Michigan State University 2: Air Force Research Laboratory; Source Info: Sep/Oct2016, Vol. 29 Issue 5, p817; Subject Term: VORONOI polygons; Subject Term: SURFACE geometry; Subject Term: ELECTROMAGNETIC waves; Subject Term: ELECTRONIC apparatus & appliances; Subject Term: SIMULATION methods & models; Author-Supplied Keyword: Delaunay-Voronoi surface integration; Author-Supplied Keyword: electronic device simulation; Author-Supplied Keyword: full-wave electromagnetics; Author-Supplied Keyword: numerical simulation; Author-Supplied Keyword: time-domain; Author-Supplied Keyword: unstructured mesh; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 14p; Document Type: Article L3 - 10.1002/jnm.2146 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117169307&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chatterjee, K. AU - Venkataraman, A. AU - Garbaciak, T. AU - Rotella, J. AU - Sangid, M.D. AU - Beaudoin, A.J. AU - Kenesei, P. AU - Park, J-S. AU - Pilchak, A.L. T1 - Study of grain-level deformation and residual stresses in Ti-7Al under combined bending and tension using high energy diffraction microscopy (HEDM). JO - International Journal of Solids & Structures JF - International Journal of Solids & Structures Y1 - 2016/09// VL - 94/95 M3 - Article SP - 35 EP - 49 SN - 00207683 AB - In-situ high energy diffraction microscopy (HEDM) experiments are carried out to analyze the state of combined bending and tension in a Ti-7Al alloy under room temperature creep. Grain-level elastic strain tensors are evaluated from HEDM data. Atomistic calculations are used to predict elastic constants of Ti-7Al, to be used in determination of stress from strain. The stress gradient and residual stresses are successfully determined, which allows the demarcation between macro-/micro-level residual stresses. A cluster of three neighboring grains are identified that highlight the variation of mean and effective stress between grains. Crystallographic orientations and slip characteristics are analyzed for the selected grains. It is inferred that the interfaces between loaded grains with markedly different stress triaxiality and slip tendency are potential spots for material damage. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Solids & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEFORMATIONS (Mechanics) KW - RESIDUAL stresses KW - STRAINS & stresses (Mechanics) KW - CRYSTALLOGRAPHY KW - ELASTICITY KW - High energy diffraction microscopy KW - Slip tendency KW - Stress gradient KW - Stress triaxiality KW - Ti-7Al alloy N1 - Accession Number: 116002704; Chatterjee, K. 1 Venkataraman, A. 2 Garbaciak, T. 1 Rotella, J. 2 Sangid, M.D. 2 Beaudoin, A.J. 1; Email Address: cabanabeau@gmail.com Kenesei, P. 3 Park, J-S. 3 Pilchak, A.L. 4; Affiliation: 1: Department of Mechanical Science and Engineering, University of Illinois at Urbana Champaign, 1206 W. Green Street, Urbana, IL 61801, USA 2: School of Aeronautics and Astronautics Engineering, Purdue University, 701 W. Stadium Avenue, West Lafayette, IN 47907, USA 3: Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, IL 60439, USA 4: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RXCM), Wright Patterson Air Force Base, OH, 45433, USA; Source Info: Sep2016, Vol. 94/95, p35; Subject Term: DEFORMATIONS (Mechanics); Subject Term: RESIDUAL stresses; Subject Term: STRAINS & stresses (Mechanics); Subject Term: CRYSTALLOGRAPHY; Subject Term: ELASTICITY; Author-Supplied Keyword: High energy diffraction microscopy; Author-Supplied Keyword: Slip tendency; Author-Supplied Keyword: Stress gradient; Author-Supplied Keyword: Stress triaxiality; Author-Supplied Keyword: Ti-7Al alloy; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.ijsolstr.2016.05.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116002704&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rizzetta, Donald P. AU - Visbal, Miguel R. T1 - Simulation of Laminar-Flow Compatible High-Lift Wing Configuration with Flow Control. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2016/09// VL - 53 IS - 5 M3 - Article SP - 1419 EP - 1430 SN - 00218669 AB - Large-eddy simulations were carried out to describe the flow past a high-lift wing section. The configuration consists of a baseline laminar flow geometry, with smoothly deflected leading- and trailing-edge flaps, corresponding to a wind-tunnel model. Both flaps are deployed at a 45 deg angle with respect to the undeflected state, and blowing from internal plenums is employed to mitigate transition, increase attached flow, and enhance lift. Solutions were obtained to the Navier-Stokes equations, at the experimental chord-based Reynolds number of 1×106 and Mach number of 0.14. The numerical method is based upon a high-fidelity scheme and an implicit time-marching approach. Results were generated for two different angles of attack, in freestream conditions and within the confines of wind-tunnel walls. Comparisons are made with available experimental data in terms of surface pressure distributions, and the effect of blowing is quantified by comparison to baseline cases without control. Details of the computations are described, and physical features of the computed flowfields are characterized. Disparities between measurements and computations were attributable to many details of the experimental arrangement that were unknown or that could not be duplicated in the numerical calculations. The large-scale simulations provided much information of a complex flow situation, by capturing detailed physics of the configuration, that could not be obtained through alternative methods. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 118198581; Rizzetta, Donald P. 1,2,3 Visbal, Miguel R. 1,4,5; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512 2: Senior Research Aerospace Engineer, Aerodynamic Technology Branch, RQVA 3: Associate Fellow AIAA 4: Technical Area Leader, Aerodynamic Technology Branch, RQVA 5: Fellow AIAA; Source Info: Sep2016, Vol. 53 Issue 5, p1419; Number of Pages: 12p; Document Type: Article L3 - 10.2514/1.C033596 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118198581&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pettit, Timothy J. AU - Simpson, Natalie C. AU - Hancock, Philip G. AU - Clark, Hayden AU - Haydel, Trevor AU - Pierce, Jordan T1 - EXPLORING OPERATIONAL RESILIENCE IN THE CONTEXT OF MILITARY AVIATION: FINDING THE RIGHT MODE AT THE RIGHT TIME. JO - Journal of Business & Behavioral Sciences JF - Journal of Business & Behavioral Sciences Y1 - 2016///Fall2016 VL - 28 IS - 2 M3 - Article SP - 24 EP - 36 SN - 10995374 AB - Operational resilience is the ability of an organization to avoid disruption, and if unsuccessful in avoidance, to recover as quickly as possible. We begin with an a priori assumption that operational resilience is dependent in part on an organization's ability to change its mode of operation in response to disruptive conditions, and that the antecedents of this ability will be most apparent in organizations that routinely change mode out of necessity. The United States Air Force is one such example of a routinely multi-modal organization, thriving on rapid problem solving and effectiveness in wartime, while striving for cost savings and efficiency in home station operations and peace-time. This project focuses on uncovering those policies and procedures associated with quick and effective transition between operational modes, by examining and contrasting the practices of two Air Force aircraft systems. This exploratory work is the initial phase of a project dedicated to both developing new methods to improve operational resilience and identifying those generalizable principles and practices that may enhance resilience in all types of operations and organizations. Initial results will be presented as several themes of what enhances resilience and what limits resilience with respect to effective transition between modes. Further investigation and analysis are forthcoming. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Business & Behavioral Sciences is the property of American Society of Business & Behavioral Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COST effectiveness KW - MILITARY aeronautics KW - GENERALIZATION KW - PHASE transformations (Physics) KW - Flexibility KW - Operating modes KW - Operations management KW - Resilience KW - Responsiveness KW - UNITED States. Air Force N1 - Accession Number: 120458295; Pettit, Timothy J. 1; Simpson, Natalie C. 2; Hancock, Philip G. 3; Clark, Hayden 4; Haydel, Trevor 4; Pierce, Jordan 4; Affiliations: 1: National University; 2: University at Buffalo (SUNY); 3: Glenochil Associates LLC; 4: United States Air Force Academy; Issue Info: Fall2016, Vol. 28 Issue 2, p24; Thesaurus Term: COST effectiveness; Subject Term: MILITARY aeronautics; Subject Term: GENERALIZATION; Subject Term: PHASE transformations (Physics); Author-Supplied Keyword: Flexibility; Author-Supplied Keyword: Operating modes; Author-Supplied Keyword: Operations management; Author-Supplied Keyword: Resilience; Author-Supplied Keyword: Responsiveness ; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=120458295&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Paduano, Qing AU - Snure, Michael AU - Weyburne, David AU - Kiefer, Arnold AU - Siegel, Gene AU - Hu, Jianjun T1 - Metalorganic chemical vapor deposition of few-layer sp2 bonded boron nitride films. JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2016/09// VL - 449 M3 - Article SP - 148 EP - 155 SN - 00220248 AB - A systematic study of the growth of atomically smooth few-layer sp 2 bonded BN on 50 mm sapphire substrates by metalorganic chemical vapor deposition (MOCVD) using Triethylboron (TEB) and NH 3 as precursors is described. Based on the experimental results obtained using Raman spectroscopy, atomic force microscopy (AFM), X-ray reflectance measurements and transmission electron microscopy, we explored the growth parameter space and identified three different growth modes: random three-dimensional (3D) growth, a self-terminating few-layer growth mode, and a very slow layer-by-layer mode. The growth mode depends on the temperature, pressure, V/III ratio, and surface nitridation conditions, as follows: 3D island growth is dominant in the low V/III range and is characterized by a decreasing growth rate with increasing deposition temperature. When the V/III ratio is increased this 3D island growth mode transitions to a self-terminating few-layer growth mode. An additional transition from self-terminating growth to 3D growth occurs when the growth pressure is increased. Very slow layer by layer growth is found at high temperature and low pressure. Finally, substrate surface nitridation promotes self-terminating growth that results in atomically smooth films. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL organic chemical vapor deposition KW - BORON nitride KW - CRYSTAL growth KW - RAMAN spectroscopy KW - NITRIDATION KW - Low dimensional structures KW - Metalorganic chemical vapor deposition KW - Nitrides KW - Semiconducting III–V materials N1 - Accession Number: 117181855; Paduano, Qing 1; Email Address: cpaduano@gmail.com Snure, Michael 1 Weyburne, David 1 Kiefer, Arnold 1 Siegel, Gene 1,2 Hu, Jianjun 1,3; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH 45433, United States 2: Wyle Laboratories, Inc., 2601 Mission Point Blvd., Dayton, OH 45431, United States 3: University of Dayton Research Institute, University of Dayton, Dayton, OH 45469, United States; Source Info: Sep2016, Vol. 449, p148; Subject Term: METAL organic chemical vapor deposition; Subject Term: BORON nitride; Subject Term: CRYSTAL growth; Subject Term: RAMAN spectroscopy; Subject Term: NITRIDATION; Author-Supplied Keyword: Low dimensional structures; Author-Supplied Keyword: Metalorganic chemical vapor deposition; Author-Supplied Keyword: Nitrides; Author-Supplied Keyword: Semiconducting III–V materials; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jcrysgro.2016.06.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117181855&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Augustine M Urbas AU - Zubin Jacob AU - Luca Dal Negro AU - Nader Engheta AU - A D Boardman AU - P Egan AU - Alexander B Khanikaev AU - Vinod Menon AU - Marcello Ferrera AU - Nathaniel Kinsey AU - Clayton DeVault AU - Jongbum Kim AU - Vladimir Shalaev AU - Alexandra Boltasseva AU - Jason Valentine AU - Carl Pfeiffer AU - Anthony Grbic AU - Evgenii Narimanov AU - Linxiao Zhu AU - Shanhui Fan T1 - Roadmap on optical metamaterials. JO - Journal of Optics JF - Journal of Optics Y1 - 2016/09// VL - 18 IS - 9 M3 - Article SP - 1 EP - 1 SN - 20408978 AB - Optical metamaterials have redefined how we understand light in notable ways: from strong response to optical magnetic fields, negative refraction, fast and slow light propagation in zero index and trapping structures, to flat, thin and perfect lenses. Many rules of thumb regarding optics, such as μ = 1, now have an exception, and basic formulas, such as the Fresnel equations, have been expanded. The field of metamaterials has developed strongly over the past two decades. Leveraging structured materials systems to generate tailored response to a stimulus, it has grown to encompass research in optics, electromagnetics, acoustics and, increasingly, novel hybrid material responses. This roadmap is an effort to present emerging fronts in areas of optical metamaterials that could contribute and apply to other research communities. By anchoring each contribution in current work and prospectively discussing future potential and directions, the authors are translating the work of the field in selected areas to a wider community and offering an incentive for outside researchers to engage our community where solid links do not already exist. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Optics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAMATERIALS KW - COMPOSITE materials KW - MAGNETIC fields KW - OPTICS KW - ELECTROMAGNETISM N1 - Accession Number: 117657748; Augustine M Urbas 1,2; Email Address: augustine.urbas@us.af.mil Zubin Jacob 3,4 Luca Dal Negro 5 Nader Engheta 6 A D Boardman 7 P Egan 7 Alexander B Khanikaev 8 Vinod Menon 9 Marcello Ferrera 4,10 Nathaniel Kinsey 4 Clayton DeVault 4 Jongbum Kim 4 Vladimir Shalaev 4 Alexandra Boltasseva 4 Jason Valentine 11 Carl Pfeiffer 12 Anthony Grbic 12 Evgenii Narimanov 4 Linxiao Zhu 13 Shanhui Fan 13; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force, Base, Ohio 45433, USA 2: Guest editor of the roadmap. 3: Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 2V4, Canada 4: Birck Nanotechnology Center, School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47906, USA 5: Department of Electrical and Computer Engineering & Photonics Center, and Division of Materials Science and Engineering, Boston University, 8 Saint Mary Street, Boston, Massachusetts 02215, USA 6: Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA 7: Joule Physics Laboratory, Institute for Materials Research, University of Salford, Manchester, M5 4WT, UK 8: Queens College and The Graduate Center of The City University of New York, Queens, New York 11367, USA 9: City College and The Graduate Center of The City University of New York, New York, New York 10031, USA 10: School of Engineering and Physical Sciences, Heriot-Watt University, David Brewster Building, Edinburgh, Scotland EH14 4AS, UK 11: Department of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee 37212, USA 12: Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan 48109-2122, USA 13: Department of Electrical Engineering, and Department of Applied Physics, Stanford University, Stanford, California 94305, USA; Source Info: Sep2016, Vol. 18 Issue 9, p1; Subject Term: METAMATERIALS; Subject Term: COMPOSITE materials; Subject Term: MAGNETIC fields; Subject Term: OPTICS; Subject Term: ELECTROMAGNETISM; Number of Pages: 1p; Document Type: Article L3 - 10.1088/2040-8978/18/9/093005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117657748&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sereda, Valentin AU - Ralbovsky, Nicole M. AU - Vasudev, Milana C. AU - Naik, Rajesh R. AU - Lednev, Igor K. T1 - Polarized raman spectroscopy for determining the orientation of di- d-phenylalanine molecules in a nanotube. JO - Journal of Raman Spectroscopy JF - Journal of Raman Spectroscopy Y1 - 2016/09// VL - 47 IS - 9 M3 - Article SP - 1056 EP - 1062 SN - 03770486 AB - Self-assembly of short peptides into nanostructures has become an important strategy for the bottom-up fabrication of nanomaterials. Significant interest to such peptide-based building blocks is due to the opportunity to control the structure and properties of well-structured nanotubes, nanofibrils, and hydrogels. X-ray crystallography and solution nuclear magnetic resonance (NMR), two major tools of structural biology, have significant limitations when applied to peptide nanotubes because of their non-crystalline structure and large weight. Polarized Raman spectroscopy was utilized for structural characterization of well-aligned di- d-diphenylalanine nanotubes. The orientation of selected chemical groups relative to the main axis of the nanotube was determined. Specifically, the C-N bond of CNH3+ groups is oriented parallel to the nanotube axis, the peptides' carbonyl groups are tilted at approximately 54° from the axis, and the COO− groups run perpendicular to the axis. The determined orientation of chemical groups allowed the understanding of the orientation of di- d-diphenylalanine molecule that is consistent with its equilibrium conformation. The obtained data indicate that there is only one orientation of di- d-diphenylalanine molecules with respect to the nanotube main axis. Copyright © 2016 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Raman Spectroscopy is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN spectroscopy KW - PHENYLALANINE KW - NANOTUBES KW - MOLECULAR self-assembly KW - X-ray crystallography KW - NUCLEAR magnetic resonance KW - diphenylalanine KW - nanotube structure KW - orientation distribution function KW - peptide nanotube KW - polarized Raman spectroscopy N1 - Accession Number: 118000463; Sereda, Valentin 1 Ralbovsky, Nicole M. 1 Vasudev, Milana C. 2 Naik, Rajesh R. 3 Lednev, Igor K. 1; Affiliation: 1: Department of Chemistry, University at Albany 2: Department of Bioengineering, University of Massachusetts Dartmouth 3: 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB,; Source Info: Sep2016, Vol. 47 Issue 9, p1056; Subject Term: RAMAN spectroscopy; Subject Term: PHENYLALANINE; Subject Term: NANOTUBES; Subject Term: MOLECULAR self-assembly; Subject Term: X-ray crystallography; Subject Term: NUCLEAR magnetic resonance; Author-Supplied Keyword: diphenylalanine; Author-Supplied Keyword: nanotube structure; Author-Supplied Keyword: orientation distribution function; Author-Supplied Keyword: peptide nanotube; Author-Supplied Keyword: polarized Raman spectroscopy; Number of Pages: 7p; Document Type: Article L3 - 10.1002/jrs.4884 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118000463&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stauffer, Hans U. AU - Wrzesinski, Paul J. AU - Roy, Sukesh AU - Kulatilaka, Waruna D. AU - Gord, James R. T1 - Collision-independent detection of molecular two-photon excitation by time-resolved parametric four-wave mixing. JO - Journal of Raman Spectroscopy JF - Journal of Raman Spectroscopy Y1 - 2016/09// VL - 47 IS - 9 M3 - Article SP - 1124 EP - 1129 SN - 03770486 AB - We report collision-independent detection of gas-phase nitric oxide (NO) via a two-pulse, femtosecond (fs) time-resolved parametric four-wave-mixing (PFWM) optical-probe scheme. This approach exploits the broadband two-photon excitation of rovibrational manifolds associated with resonant electronic molecular transitions, allowing species-specific detection. The observed time-domain fs-PFWM spectral signature associated with this broadband electronic two-photon excitation process is shown to exhibit negligible dependence on colliding-partner concentrations at short (<10 ps) time delays, even in the presence of species that strongly quench excited-state fluorescence. Furthermore, by employing a hybrid fs/ps PFWM scheme, the broadband two-photon absorption spectrum of the molecular species of interest is demonstrated to be resolved in the wavenumber domain without need to scan the probe-pulse delay. Copyright © 2015 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Raman Spectroscopy is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NITRIC oxide -- Analysis KW - EXCITATION spectrum KW - LIGHT absorption KW - FEMTOSECOND pulses KW - LASERS -- Design & construction KW - combustion diagnostics KW - four-wave mixing KW - hybrid fs/ps four-wave mixing KW - ultrafast spectroscopy N1 - Accession Number: 118000466; Stauffer, Hans U. 1 Wrzesinski, Paul J. 1 Roy, Sukesh 1 Kulatilaka, Waruna D. 1 Gord, James R. 2; Affiliation: 1: Spectral Energies, LLC 2: Air Force Research Laboratory, Aerospace Systems Directorate; Source Info: Sep2016, Vol. 47 Issue 9, p1124; Subject Term: NITRIC oxide -- Analysis; Subject Term: EXCITATION spectrum; Subject Term: LIGHT absorption; Subject Term: FEMTOSECOND pulses; Subject Term: LASERS -- Design & construction; Author-Supplied Keyword: combustion diagnostics; Author-Supplied Keyword: four-wave mixing; Author-Supplied Keyword: hybrid fs/ps four-wave mixing; Author-Supplied Keyword: ultrafast spectroscopy; Number of Pages: 6p; Document Type: Article L3 - 10.1002/jrs.4872 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118000466&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pilinski, Marcin D. AU - McNally, Rees L. AU - Bowman, Bruce A. AU - Palo, Scott E. AU - Forbes, Jeffrey M. AU - Davis, Bruce L. AU - Moore, R. Gilbert AU - Kemble, Kyle AU - Koehler, Chris AU - Sanders, Brian T1 - Comparative Analysis of Satellite Aerodynamics and Its Application to Space-Object Identification. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2016/09// VL - 53 IS - 5 M3 - Article SP - 876 EP - 886 SN - 00224650 AB - The accuracy of atmospheric density measurements inferred from satellite drag is limited by errors in drag coefficient estimates. In this work, we use a unique opportunity in which the Drag and Atmospheric Neutral Density Explorer satellite and three Polar Orbiting Passive Atmospheric Calibration Spheres are deployed from a common launch vehicle. Each object flies through similar atmospheric conditions but has a different area-to-mass ratio. This allows aerodynamic analysis that is independent of atmospheric density via comparisons of measured and modeled ballistic coefficient ratios. A test particle method combined with a satellite energy accommodation model is used to model the aerodynamics of these objects. Fitted ballistic coefficients computed as a result of special-perturbations orbit analysis are then compared to the model results. The drag coefficient model and observations agree at the 1-2% level when coefficient ratios are compared. Comparisons of an additional shape with model predictions are made possible when one of the satellites shed its launch adapter. This work validates the aerodynamic model used here and can be applied in future research to improve models of atmospheric density and predictions of satellite drag. Beyond potential improvements to atmospheric models, the technique presented here is shown to identify objects based on their aerodynamic signature. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 119569297; Pilinski, Marcin D. 1 McNally, Rees L. 2 Bowman, Bruce A. 3 Palo, Scott E. 4 Forbes, Jeffrey M. 5 Davis, Bruce L. 6 Moore, R. Gilbert 7 Kemble, Kyle 8 Koehler, Chris 9 Sanders, Brian 10; Affiliation: 1: Deputy Director, Space Systems Division, Atmospheric and Space Technology Research Associates, Boulder, 5777 Central Avenue, Colorado 80301 2: Graduate Research Assistant, Department of Physics, University of Colorado, 440 University Avenue, Boulder, Colorado 80302 3: Research Associate, Space Weather Division, Space Environment Technologies, 1676 Palisades Drive, Palisades, California 90272 4: Victor Charles Schelke Endowed Professor, Associate Dean for Research, Department of Aerospace Engineering Sciences, Colorado Center for Astrodynamics Research, Research and Engineering Center for Unmanned Vehicles, 429 UCB, University of Colorado, Boulder, Colorado 80309 5: Professor, Glenn Murphy Endowed Chair, Department of Aerospace Engineering Sciences, 429 UCB, University of Colorado, Boulder, Colorado 80309 6: Engineer, ROCCOR, Louisville, 500 South Arthur Avenue, Suite 300, Colorado 80027 7: Director, Project POPACS, 3855 Sierra Vista Road, Monument, Colorado 80132 8: Mission Manager, Space Experiments and Programs Branch, Air Force Research Laboratory, Kirtland Air Force Base,3550 Aberdeen Avenue, Southeast, New Mexico 87117 9: Director, Colorado Space Grant Consortium, 520 UCB, 520 UCB Boulder, C0 80309-0520 10: Deputy Director, Colorado Space Grant Consortium, Colorado Space Grant Consortium, Boulder, Colorado Space Grant Consortium, Boulder, Colorado 80309, Colorado 80309, 520 UCB, 520 UCB Boulder, C0 80309-0520; Source Info: Sep2016, Vol. 53 Issue 5, p876; Number of Pages: 11p; Document Type: Article L3 - 10.2514/1.A33482 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119569297&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Banik, Jeremy A. AU - Maji, Arup K. T1 - Structural Scaling Parameters for Rectangular Flexible Blanket Solar Arrays. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2016/09// VL - 53 IS - 5 M3 - Article SP - 936 EP - 951 SN - 00224650 AB - Performance parameters have been used for nearly a century to provide structural designers with simple, rational tools to evaluate competing architectures. Flexible blanket photovoltaic solar arrays of rectangular form are the focus here. Two parameters are created to relate mass of the compression column, photovoltaic blanket, and spreader bar to the loading and geometric quantities. The scaling parameter and scaling index are developed by minimizing array mass and cost through a constraint function and numerical analysis. The scaling parameter provides perspective into the effect of column architecture selection on array performance. The scaling index serves a slightly different purpose because it informs mission planners how the array requirements (acceleration loading, fundamental frequency, and array power) affect the array mass. The greatest opportunity for mass savings comes from reducing length, growing width, and reducing the quantity of beam-column supports. Reducing beam packaged volume has greater payoff than increasing beam mass efficiency. Use of the scaling parameter and index is demonstrated on heritage tensioned blanket systems: Terra, the Milstar constellation, and the International Space Station. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 119569302; Banik, Jeremy A. 1 Maji, Arup K. 2; Affiliation: 1: Senior Research Engineer, Space Vehicles Directorate, U.S. Air Force Research Laboratory, Kirtland Air Force Base, 3550 Aberdeen Avenue SE, New Mexico 87117 2: Professor, Department of Civil Engineering, 210 University Boulevard NE, University of New Mexico, Albuquerque, New Mexico 87131; Source Info: Sep2016, Vol. 53 Issue 5, p936; Number of Pages: 16p; Document Type: Article L3 - 10.2514/1.A32895 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119569302&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Amano, R. S. AU - Yi-Hsin Yen AU - Miller, Timothy C. AU - Ebnit, Adam AU - Lightfoot, Malissa AU - Sankaran, Venke T1 - Study of the Liquid Breakup Process in Solid Rocket Motor. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2016/09// VL - 53 IS - 5 M3 - Article SP - 980 EP - 992 SN - 00224650 AB - In a solid rocket motor, when the aluminum based propellant combusts, the fuel is oxidized into alumina (Al2O3). It tends to agglomerate into molten droplets, impinge on the chamber walls, and then flow along the nozzle wall. Such agglomerates cause erosive damage. The focus of the current research is to characterize the agglomerate flow within the nozzle section by studying the breakup process of the liquid film that flows along the wall of a straight test channel while a relatively higher-speed gas moves over it. We have used an unsteady-flow Reynolds-averaged Navier-Stokes code to investigate the interaction of the liquid film flow with the gas flow. The rate of the wave breakup was characterized by introducing breakup length, Ohnesorge number, and Weber number for various flow conditions. Based on the volume fraction of the liquid, these three numbers are indicators of the level of liquid breakup. We summarize that a larger breakup length relates to a high breakup state of the liquid because the appearance of droplets contributes to a larger total boundary length during calculation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 119569306; Amano, R. S. 1 Yi-Hsin Yen 2 Miller, Timothy C. 3 Ebnit, Adam 3 Lightfoot, Malissa 3 Sankaran, Venke 3; Affiliation: 1: Professor, Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, 115 E. Reindl Way, Glendale, WI 53212, Wisconsin 53211 2: Graduate Student, Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, 115 E. Reindl Way, Glendale, WI 53212 3: Air Force Research Laboratory, Edwards Air Force Base, CA; Source Info: Sep2016, Vol. 53 Issue 5, p980; Number of Pages: 13p; Document Type: Article L3 - 10.2514/1.A33393 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119569306&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - MILLER, SAMUEL T.1,2 T1 - DEFENSE BUDGETS ARE LEAN, BUT WE CAN STILL GO GREEN: USING THIRD-PARTY FINANCING TO MEET THE PRESIDENT'S RENEWABLE ENERGY GOALS. JO - Military Law Review JF - Military Law Review J1 - Military Law Review PY - 2016/09// Y1 - 2016/09// VL - 224 IS - 3 CP - 3 M3 - Article SP - 692 EP - 714 SN - 00264040 N1 - Accession Number: 121616455; Authors:MILLER, SAMUEL T. 1,2; Affiliations: 1: Judge Advocate, United States Air Force; 2: Litigation Branch Chief, United States Air Force Commercial Litigation Field Support Center; Number of Pages: 23p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=121616455&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR AU - Flores, Angel AU - Dajani, Iyad AU - Holten, Roger AU - Ehrenreich, Thomas AU - Anderson, Brian T1 - Multi-kilowatt diffractive coherent combining of pseudorandom-modulated fiber amplifiers. JO - Optical Engineering JF - Optical Engineering Y1 - 2016/09// VL - 55 IS - 9 M3 - Article SP - 096101-1 EP - 096101-6 SN - 00913286 AB - We report efficient coherent beam combining of five kW-class fiber amplifiers seeded with pseudorandom phase-modulated light, using a 1 × 5 diffractive optical element (DOE). Each fiber amplifier channel was path length matched, actively polarized, and provided approximately 1.2 kW of near diffraction-limited output power (M2 < 1.1). A low-power sample of the combined beam after the DOE provided an error signal for active phase stabilization. After phase stabilization, the beams were coherently combined via the DOE. Notably, a total output power of ~5 kW was achieved with 82% combining efficiency and excellent beam quality (M2 < 1.1). The intrinsic DOE splitter loss was 5%. Additional losses due in part to nonideal polarization, amplified spontaneous emission content, uncorrelated wavefront errors, and fractional beam misalignments contributed to the efficiency reduction. Overall, multi-kW beam combining of pseudorandom-modulated fiber amplifiers was demonstrated for the first time. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL amplifiers KW - INTERFEROMETRY KW - OPTICAL measurements KW - fiber amplifiers KW - laser beam combining KW - phase modulation KW - stimulated Brillouin scattering N1 - Accession Number: 119432499; Flores, Angel 1; Email Address: afrl.rdlc.sci.org@kirtland.af.mil Dajani, Iyad 1 Holten, Roger 2 Ehrenreich, Thomas 2 Anderson, Brian 1; Affiliation: 1: Kirtland Air Force Base, Directed Energy Directorate, Air Force Research Laboratory, 3550 Aberdeen Avenue SE, New Mexico 87117, United States 2: Leidos Holdings Inc., 2109 Air Park Road Southeast, Albuquerque, New Mexico 87106, United States; Source Info: Sep2016, Vol. 55 Issue 9, p096101-1; Subject Term: OPTICAL amplifiers; Subject Term: INTERFEROMETRY; Subject Term: OPTICAL measurements; Author-Supplied Keyword: fiber amplifiers; Author-Supplied Keyword: laser beam combining; Author-Supplied Keyword: phase modulation; Author-Supplied Keyword: stimulated Brillouin scattering; Number of Pages: 6p; Document Type: Article L3 - 10.1117/1.OE.55.9.096101 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119432499&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Young, Christopher AU - Petrosky, James AU - Mann, J. Matthew AU - Hunt, Eric M. AU - Turner, David AU - Kelly, Tony T1 - The work function of hydrothermally synthesized UO2 and the implications for semiconductor device fabrication. JO - Physica Status Solidi - Rapid Research Letters JF - Physica Status Solidi - Rapid Research Letters Y1 - 2016/09// VL - 10 IS - 9 M3 - Article SP - 687 EP - 690 SN - 18626254 AB - The photoelectric work function of nearly stoichiometric (111) and (100) hydrothermally grown UO2 was measured to be 6.28 ± 0.36 eV and 5.80 ± 0.36 eV, respectively. Candidate metals for electrical contacts are identified for both rectifying and non-rectifying contacts based on work function, lattice compatibility, and electrical conductivity. [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi - Rapid Research Letters is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - URANIUM oxides KW - SEMICONDUCTOR devices KW - PHOTOELECTRIC devices KW - STOICHIOMETRIC combustion KW - RECTIFYING circuits KW - electrical contacts KW - single crystals KW - UO2 KW - work function KW - X-ray photoemission N1 - Accession Number: 118222148; Young, Christopher 1 Petrosky, James 2 Mann, J. Matthew 3 Hunt, Eric M. 3 Turner, David 2 Kelly, Tony 1; Affiliation: 1: Department of Engineering Physics, Air Force Institute of Technology 2: Air Force Research Laboratory, Wright-Patterson Air Force Base 3: Oak Ridge Institute for Science and Education; Source Info: Sep2016, Vol. 10 Issue 9, p687; Subject Term: URANIUM oxides; Subject Term: SEMICONDUCTOR devices; Subject Term: PHOTOELECTRIC devices; Subject Term: STOICHIOMETRIC combustion; Subject Term: RECTIFYING circuits; Author-Supplied Keyword: electrical contacts; Author-Supplied Keyword: single crystals; Author-Supplied Keyword: UO2; Author-Supplied Keyword: work function; Author-Supplied Keyword: X-ray photoemission; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1002/pssr.201600203 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118222148&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ganguly, Biswa N. AU - Scofield, James D. T1 - Relative electron density distribution in a low nd helium dc discharge. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2016/09// VL - 23 IS - 9 M3 - Article SP - 1 EP - 4 SN - 1070664X AB - The axial and radial variations of the relative electron density distributions have been measured in an obstructed helium dc discharge by a laser collision induced fluorescence (LCIF) from 4 ³D to 2 ³P state at 447 nm. For this 1.75 Torr, 6.5mm gap, 1.6mA helium obstructed gas discharge, the onaxis LCIF intensity is mostly determined by the neutral atom collision. On the basis of this information, we have plotted the LCIF data to obtain a normalized electron density variation in the inter-electrode volume by plotting the ratio, I-Ion-axis/Ion-axis, where I is the radial variation of the LCIF intensity and Ion-axis is the on-axis LCIF intensity. The normalized LCIF data show an annular current density distribution in this obstructed discharge with the current peaking near the radial boundary of the electrodes. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON density KW - HELIUM KW - GLOW discharges KW - ELECTRODES KW - FLUORESCENCE N1 - Accession Number: 118582059; Ganguly, Biswa N. 1 Scofield, James D. 2; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Road, Dayton, Ohio 45432, USA 2: Air Force Research Laboratory, WPAFB, Dayton, Ohio 45433, USA; Source Info: 2016, Vol. 23 Issue 9, p1; Subject Term: ELECTRON density; Subject Term: HELIUM; Subject Term: GLOW discharges; Subject Term: ELECTRODES; Subject Term: FLUORESCENCE; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 4p; Illustrations: 2 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.4962672 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118582059&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Simon, D. H. AU - Lau, Y. Y. AU - Greening, G. AU - Wong, P. AU - Hoff, B. AU - Gilgenbach, R. M. T1 - Stability of Brillouin flow in the presence of slow-wave structure. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2016/09// VL - 23 IS - 9 M3 - Article SP - 1 EP - 9 SN - 1070664X AB - Including a slow-wave structure (SWS) on the anode in the conventional, planar, and inverted magnetron, we systematically study the linear stability of Brillouin flow, which is the prevalent flow in crossed-field devices. The analytic treatment is fully relativistic and fully electromagnetic, and it incorporates the equilibrium density profile, flow profile, and electric field and magnetic field profiles in the linear stability analysis. Using parameters similar to the University of Michigan's recirculating planar magnetron, the numerical data show that the resonant interaction of the vacuum circuit mode and the corresponding smooth-bore diocotron-like mode is the dominant cause for instability. This resonant interaction is far more important than the intrinsic negative (positive) mass property of electrons in the inverted (conventional) magnetron geometry. It is absent in either the smooth-bore magnetron or under the electrostatic assumption, one or both of which was almost always adopted in prior analytical formulation. This resonant interaction severely restricts the wavenumber for instability to the narrow range in which the cold tube frequency of the SWS is within a few percent of the corresponding smooth bore diocotron-like mode in the Brillouin flow. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BRILLOUIN scattering KW - SLOW wave structures KW - MAGNETIC fields KW - ELECTRIC fields KW - STABILITY theory KW - MAGNETRONS N1 - Accession Number: 118581971; Simon, D. H. 1 Lau, Y. Y. 1 Greening, G. 1 Wong, P. 1 Hoff, B. 2 Gilgenbach, R. M. 1; Affiliation: 1: Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109-2104, USA 2: Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, New Mexico 87117, USA; Source Info: 2016, Vol. 23 Issue 9, p1; Subject Term: BRILLOUIN scattering; Subject Term: SLOW wave structures; Subject Term: MAGNETIC fields; Subject Term: ELECTRIC fields; Subject Term: STABILITY theory; Subject Term: MAGNETRONS; Number of Pages: 9p; Illustrations: 2 Diagrams, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1063/1.4961917 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118581971&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kharod, Chetan AU - Bolleter, Scotty AU - Manifold, Craig AU - Wampler, David T1 - Reply to letter: Re: "A randomized control hands-on defibrillation study-Barrier use evaluation" by Wampler D, Kharod C, Bolleter S, Burkett A, Gabehart C, Manifold C [Resuscitation 2016;105:e13]. JO - Resuscitation JF - Resuscitation Y1 - 2016/09// VL - 106 M3 - Article SP - e9 EP - e9 SN - 03009572 KW - ELECTRIC countershock KW - ELECTRICAL energy KW - MEDICAL care -- Research KW - RESUSCITATION KW - MEDICAL research N1 - Accession Number: 117586315; Kharod, Chetan 1,2,3 Bolleter, Scotty 1,2,3 Manifold, Craig 1,2,3 Wampler, David 1,2,3; Email Address: wamplerd@uthscsa.edu; Affiliation: 1: United States Air Force, Military EMS & Disaster Medicine Fellowship, Joint Base San Antonio, San Antonio, TX, United States 2: Bulverde Spring Branch Emergency Services, Centre for Emergency Health Sciences, Spring Branch, TX, United States 3: University of Texas Health Science Center at San Antonio, Department of Emergency Health Sciences, San Antonio, United States; Source Info: Sep2016, Vol. 106, pe9; Subject Term: ELECTRIC countershock; Subject Term: ELECTRICAL energy; Subject Term: MEDICAL care -- Research; Subject Term: RESUSCITATION; Subject Term: MEDICAL research; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 1p; Document Type: Article L3 - 10.1016/j.resuscitation.2016.06.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117586315&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 117586315 T1 - Reply to letter: Re: "A randomized control hands-on defibrillation study-Barrier use evaluation" by Wampler D, Kharod C, Bolleter S, Burkett A, Gabehart C, Manifold C [Resuscitation 2016;105:e13]. AU - Kharod, Chetan AU - Bolleter, Scotty AU - Manifold, Craig AU - Wampler, David Y1 - 2016/09// N1 - Accession Number: 117586315. Language: English. Entry Date: In Process. Revision Date: 20160827. Publication Type: Article. Journal Subset: Biomedical; Europe; UK & Ireland. NLM UID: 0332173. SP - e9 EP - e9 JO - Resuscitation JF - Resuscitation JA - RESUSCITATION VL - 106 PB - Elsevier Science SN - 0300-9572 AD - United States Air Force, Military EMS & Disaster Medicine Fellowship, Joint Base San Antonio, San Antonio, TX, United States AD - Bulverde Spring Branch Emergency Services, Centre for Emergency Health Sciences, Spring Branch, TX, United States AD - University of Texas Health Science Center at San Antonio, Department of Emergency Health Sciences, San Antonio, United States U2 - PMID: 27343813. DO - 10.1016/j.resuscitation.2016.06.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=117586315&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - McCarthy, Patrick AU - Niedbalski, Nicholas AU - McCarthy, Kevin AU - Walters, Eric AU - Cory, Joshua AU - Patnaik, Soumya T1 - A First Principles Based Approach for Dynamic Modeling of Turbomachinery. JO - SAE International Journal of Aerospace JF - SAE International Journal of Aerospace Y1 - 2016/09// VL - 9 IS - 1 M3 - Article SP - 45 EP - 61 SN - 19463855 AB - As the cost and complexity of modern aircraft systems increases, emphasis has been placed on model-based design as a means for reducing development cost and optimizing performance. To facilitate this, an appropriate modeling environment is required that allows developers to rapidly explore a wider design space than can cost effectively be considered through hardware construction and testing. This wide design space can then yield solutions that are far more energy efficient than previous generation designs. In addition, non-intuitive cross-coupled subsystem behavior can also be explored to ensure integrated system stability prior to hardware fabrication and testing. In recent years, optimization of control strategies between coupled subsystems has necessitated the understanding of the integrated system dynamics. To this end, a dynamic vapor cycle modeling toolset known as the AFRL Transient Thermal Management and Optimization (ATTMO) toolset was developed to address two-phase flow systems. This toolset has been further expanded to include components typical of air cycle topologies. Current air-cycle modeling tools rely heavily on user supplied performance maps to predict turbomachinery output. This approach has a variety of limitations. First, at a conceptual design level, modifications to a specific component design requires the generation of a new map; thereby, limiting one's ability to rapidly evaluate and optimize across a wide design space. Second, interpolation routines in map-based approaches fail to yield precise solutions near critical operating points, such as compressor stall lines, due to unknown data outside of the stall point. As a result, development of control strategies around the stall margin of a machine is difficult due to the model induced instabilities or incorrect predictions from interpolation around those operating points. Lastly, modeling startup and shutdown requires torque prediction near or at zero speed, which for map-based approaches is ill-defined. To address these limitations, first principles models of traditional turbomachinery components have been developed and will be discussed in this paper. Conservation of mass, energy, and momentum are applied to capture appropriate volume dynamics relevant to plant and controls engineers. Enthalpy based calculations derived from machine geometry and fluid flow conditions allow for design optimization of machine parameters while still maintaining accurate performance predictions. These approaches have been implemented in the open-source Simulink toolset, ATTMO. Based on user defined system architecture and associated design parameters, a time-domain simulation for an integrated system analyses can be formed. [ABSTRACT FROM AUTHOR] AB - Copyright of SAE International Journal of Aerospace is the property of SAE International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DYNAMIC models KW - DYNAMIC simulation (Engineering) KW - AIRCRAFT industry KW - EQUIPMENT & supplies KW - AIRCRAFT power systems KW - TRANSIENTS (Electricity) KW - UNITED States. National Aeronautics & Space Administration N1 - Accession Number: 118727213; McCarthy, Patrick 1; Email Address: mccarthy@pcka.com Niedbalski, Nicholas 2 McCarthy, Kevin 1 Walters, Eric 1 Cory, Joshua 3 Patnaik, Soumya 4; Affiliation: 1: PC Krause & Associates Inc 2: Air Force Research Laboratory 3: UDRI 4: US Air Force Research Laboratory; Source Info: Sep2016, Vol. 9 Issue 1, p45; Subject Term: DYNAMIC models; Subject Term: DYNAMIC simulation (Engineering); Subject Term: AIRCRAFT industry; Subject Term: EQUIPMENT & supplies; Subject Term: AIRCRAFT power systems; Subject Term: TRANSIENTS (Electricity); Company/Entity: UNITED States. National Aeronautics & Space Administration; NAICS/Industry Codes: 441228 Motorcycle, ATV, and All Other Motor Vehicle Dealers; NAICS/Industry Codes: 441220 Motorcycle, boat and other motor vehicle dealers; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 17p; Document Type: Article L3 - 10.4271/2016-01-1995 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118727213&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Deppen, Timothy AU - Raczkowski, Brian AU - Amrhein, Marco AU - Wells, Jason AU - Walters, Eric AU - Bodie, Mark AU - Patnaik, Soumya T1 - A Specification Analysis Framework for Aircraft Systems. JO - SAE International Journal of Aerospace JF - SAE International Journal of Aerospace Y1 - 2016/09// VL - 9 IS - 1 M3 - Article SP - 82 EP - 90 SN - 19463855 AB - Future aircraft systems are projected to have order of magnitude greater power and thermal demands, along with tighter constraints on the performance of the power and thermal management subsystems. This trend has led to the need for a fully integrated design process where power and thermal systems, and their interactions, are considered simultaneously. To support this new design paradigm, a general framework for codifying and checking specifications and requirements is presented. This framework is domain independent and can be used to translate requirement language into a structured definition that can be quickly queried and applied to simulation and measurement data. It is constructed by generalizing a previously developed power quality analysis framework. The application of this framework is demonstrated through the translation of thermal specifications for airborne electrical equipment, into the SPecification And Requirement Evaluation (SPARE) Tool. The SPARE Tool is a MATLAB toolbox that automates both the thermal and power quality analysis of simulation and experimental data based on the techniques discussed in this paper. The combination of both thermal and power quality analysis into one tool, demonstrates how a single program can be used to analyze requirements across both power and thermal systems. A sample inverter design problem is used to illustrate how the SPARE Tool can be used to analyze thermal requirements and identify potential design compromises between the electrical and thermal domains. This example shows the value of multi-domain analysis programs, like the SPARE Tool. Use of such tools will enhance collaboration, speed up design iterations, and aid engineers and researchers in meeting the design challenges of future aircraft systems. [ABSTRACT FROM AUTHOR] AB - Copyright of SAE International Journal of Aerospace is the property of SAE International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECIFICATIONS KW - AIRCRAFT power systems KW - AIRPLANES -- Equipment & supplies KW - THERMAL management (Electronic packaging) KW - POWER electronics N1 - Accession Number: 118727216; Deppen, Timothy 1; Email Address: tdeppen@pcka.com Raczkowski, Brian 1 Amrhein, Marco 1 Wells, Jason 1 Walters, Eric 1 Bodie, Mark 2 Patnaik, Soumya 2; Affiliation: 1: PC Krause & Associates 2: US Air Force Research Laboratory; Source Info: Sep2016, Vol. 9 Issue 1, p82; Subject Term: SPECIFICATIONS; Subject Term: AIRCRAFT power systems; Subject Term: AIRPLANES -- Equipment & supplies; Subject Term: THERMAL management (Electronic packaging); Subject Term: POWER electronics; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.4271/2016-01-2023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118727216&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liang, Qilian AU - Durrani, Tariq S. AU - Pi, Yiming AU - Samn, Sherwood W. T1 - Signal processing for heterogeneous sensor networks. JO - Signal Processing JF - Signal Processing Y1 - 2016/09// VL - 126 M3 - Article SP - 1 EP - 3 SN - 01651684 KW - SIGNAL processing KW - SENSOR networks KW - MIMO systems KW - ALGORITHMS KW - SPARSE approximations KW - CANONICAL correlation (Statistics) N1 - Accession Number: 114874267; Liang, Qilian 1; Email Address: liang@uta.edu Durrani, Tariq S. 2; Email Address: durrani@strath.ac.uk Pi, Yiming 3; Email Address: ympi@uestc.edu.cn Samn, Sherwood W. 4; Email Address: ssamn0728@yahoo.com; Affiliation: 1: Department of Electrical Engineering, University of Texas at Arlington, USA, Arlington, TX 76019-0016, USA 2: Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow Scotland, UK 3: College of Electronic Engineering, University of Electronic Science and Technology, Chengdu, China 4: Air Force Research Laboratory/RHX, Brooks City Base, San Antonio, TX 78235, USA; Source Info: Sep2016, Vol. 126, p1; Subject Term: SIGNAL processing; Subject Term: SENSOR networks; Subject Term: MIMO systems; Subject Term: ALGORITHMS; Subject Term: SPARSE approximations; Subject Term: CANONICAL correlation (Statistics); Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.sigpro.2016.02.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114874267&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Caruço, Rodrigo M. T1 - IN ORDER TO FORM A MORE PERFECT COURT: A QUANTITATIVE MEASURE OF THE MILITARY’S HIGHEST COURT’S SUCCESS AS A COURT OF LAST RESORT. JO - Vermont Law Review JF - Vermont Law Review Y1 - 2016///Fall2016 VL - 41 IS - 1 M3 - Article SP - 71 EP - 128 SN - 01452908 AB - The article discusses the success of the U.S. Court of Appeals for the Armed Forces (CAAF) as a court of last resort, and it mentions American military law, the U.S. Supreme Court's view of the CAAF, and the supervisory power and authority of the CAAF as of 2016. The inherent powers of the judiciary are examined, along with America's All Writs Act, changes to procedural rules, and various legal decisions issued by the CAAF. The U.S. Department of Defense (DoD) is also assessed. KW - COURTS of last resort KW - SUCCESS KW - JUDICIAL power KW - AUTHORITY KW - JUDGMENTS (Law) KW - PROCEDURE (Law) -- United States KW - UNITED States KW - STATES KW - UNITED States. Court of Appeals for the Armed Forces KW - UNITED States. Supreme Court N1 - Accession Number: 121126868; Caruço, Rodrigo M. 1,2,3; Affiliation: 1: Captain, United States Air Force. 2: B.A., University of Central Florida. 3: J.D., Barry University Dwayne O. Andreas School of Law.; Source Info: Fall2016, Vol. 41 Issue 1, p71; Subject Term: COURTS of last resort; Subject Term: SUCCESS; Subject Term: JUDICIAL power; Subject Term: AUTHORITY; Subject Term: JUDGMENTS (Law); Subject Term: PROCEDURE (Law) -- United States; Subject Term: UNITED States; Subject Term: STATES; Company/Entity: UNITED States. Court of Appeals for the Armed Forces Company/Entity: UNITED States. Supreme Court; Number of Pages: 58p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121126868&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2016-32450-001 AN - 2016-32450-001 AU - Bikson, Marom AU - Grossman, Pnina AU - Thomas, Chris AU - Zannou, Adantchede Louis AU - Jiang, Jimmy AU - Adnan, Tatheer AU - Mourdoukoutas, Antonios P. AU - Kronberg, Greg AU - Truong, Dennis AU - Boggio, Paulo AU - Brunoni, André R. AU - Charvet, Leigh AU - Fregni, Felipe AU - Fritsch, Brita AU - Gillick, Bernadette AU - Hamilton, Roy H. AU - Hampstead, Benjamin M. AU - Jankord, Ryan AU - Kirton, Adam AU - Knotkova, Helena AU - Liebetanz, David AU - Liu, Anli AU - Loo, Colleen AU - Nitsche, Michael A. AU - Reis, Janine AU - Richardson, Jessica D. AU - Rotenberg, Alexander AU - Turkeltaub, Peter E. AU - Woods, Adam J. T1 - Safety of transcranial direct current stimulation: Evidence based update 2016. JF - Brain Stimulation JO - Brain Stimulation JA - Brain Stimul Y1 - 2016/09//Sep-Oct, 2016 VL - 9 IS - 5 SP - 641 EP - 661 CY - Netherlands PB - Elsevier Science SN - 1935-861X SN - 1876-4754 AD - Bikson, Marom N1 - Accession Number: 2016-32450-001. PMID: 27372845 Partial author list: First Author & Affiliation: Bikson, Marom; Department of Biomedical Engineering, City College of New York, New York, NY, US. Release Date: 20160704. Correction Date: 20161128. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Bikson, Marom. Major Descriptor: Electrical Stimulation; Transcranial Magnetic Stimulation; Computational Modeling. Minor Descriptor: Animal Models. Classification: Electrophysiology (2530). Population: Human (10); Animal (20). Methodology: Literature Review. Page Count: 21. Issue Publication Date: Sep-Oct, 2016. Publication History: First Posted Date: Jun 15, 2016; Accepted Date: Jun 12, 2016; Revised Date: Jun 10, 2016; First Submitted Date: Feb 3, 2016. Copyright Statement: All rights reserved. Elsevier Inc. 2016. AB - This review updates and consolidates evidence on the safety of transcranial Direct Current Stimulation (tDCS). Safety is here operationally defined by, and limited to, the absence of evidence for a Serious Adverse Effect, the criteria for which are rigorously defined. This review adopts an evidence-based approach, based on an aggregation of experience from human trials, taking care not to confuse speculation on potential hazards or lack of data to refute such speculation with evidence for risk. Safety data from animal tests for tissue damage are reviewed with systematic consideration of translation to humans. Arbitrary safety considerations are avoided. Computational models are used to relate dose to brain exposure in humans and animals. We review relevant dose–response curves and dose metrics (e.g. current, duration, current density, charge, charge density) for meaningful safety standards. Special consideration is given to theoretically vulnerable populations including children and the elderly, subjects with mood disorders, epilepsy, stroke, implants, and home users. Evidence from relevant animal models indicates that brain injury by Direct Current Stimulation (DCS) occurs at predicted brain current densities (6.3–13 A/m²) that are over an order of magnitude above those produced by conventional tDCS. To date, the use of conventional tDCS protocols in human trials (≤40 min, ≤4 milliamperes, ≤7.2 Coulombs) has not produced any reports of a Serious Adverse Effect or irreversible injury across over 33,200 sessions and 1000 subjects with repeated sessions. This includes a wide variety of subjects, including persons from potentially vulnerable populations. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Safety KW - tDCS KW - Transcranial Direct Current Stimulation KW - Electrical stimulation KW - tDCS safety KW - Mood disorders KW - 2016 KW - Electrical Stimulation KW - Transcranial Magnetic Stimulation KW - Computational Modeling KW - Animal Models KW - 2016 U1 - Sponsor: National Institutes of Health, US. Grant: 5R03EB017410-02; 5R21EB017510-02; 5R01MH092926-05. Recipients: Bikson, Marom U1 - Sponsor: US Department of Defense, US. Grant: FA9550-13-1-0073. Recipients: Bikson, Marom U1 - Sponsor: McKnight Brain Research Foundation. Recipients: Woods, Adam J. U1 - Sponsor: University of Florida, Center for Cognitive Aging and Memory, US. Recipients: Woods, Adam J. U1 - Sponsor: National Institutes of Health, NCATS, US. Grant: UL1 TR000064; KL2 TR000065. Other Details: CTSA grant. Recipients: Woods, Adam J. DO - 10.1016/j.brs.2016.06.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-32450-001&site=ehost-live&scope=site UR - ORCID: 0000-0002-1118-981X UR - ORCID: 0000-0003-4429-9713 UR - UR - bikson@ccny.cuny.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2016-38131-008 AN - 2016-38131-008 AU - Funke, Gregory J. AU - Warm, Joel S. AU - Baldwin, Carryl L. AU - Garcia, Andre AU - Funke, Matthew E. AU - Dillard, Michael B. AU - Finomore, Victor S. Jr. AU - Matthews, Gerald AU - Greenlee, Eric T. T1 - The independence and interdependence of coacting observers in regard to performance efficiency, workload, and stress in a vigilance task. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2016/09// VL - 58 IS - 6 SP - 915 EP - 926 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Funke, Gregory J., Air Force Research Laboratory, Wright–Patterson Air Force Base, 2510 Fifth Street, OH, US, 45433-7951 N1 - Accession Number: 2016-38131-008. PMID: 27150529 Partial author list: First Author & Affiliation: Funke, Gregory J.; Air Force Research Laboratory, Wright– Patterson Air Force Base, OH, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20160818. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Group Performance; Group Structure; Vigilance; Work Load; Task. Minor Descriptor: Stress. Classification: Group & Interpersonal Processes (3020); Engineering & Environmental Psychology (4000). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: Dundee Stress State Questionnaire DOI: 10.1037/t27031-000. Methodology: Empirical Study; Quantitative Study. Page Count: 12. Issue Publication Date: Sep, 2016. Publication History: Accepted Date: Mar 14, 2016; First Submitted Date: Jul 23, 2015. AB - Objective: We investigated performance, workload, and stress in groups of paired observers who performed a vigilance task in a coactive (independent) manner. Background: Previous studies have demonstrated that groups of coactive observers detect more signals in a vigilance task than observers working alone. Therefore, the use of such groups might be effective in enhancing signal detection in operational situations. However, concern over appearing less competent than one’s cohort might induce elevated levels of workload and stress in coactive group members and thereby undermine group performance benefits. Accordingly, we performed the initial experiment comparing workload and stress in observers who performed a vigilance task coactively with those of observers who performed the vigilance task alone. Method: Observers monitored a video display for collision flight paths in a simulated unmanned aerial vehicle control task. Self-reports of workload and stress were secured via the NASA-Task Load Index and the Dundee Stress State Questionnaire, respectively. Results: Groups of coactive observers detected significantly more signals than did single observers. Coacting observers did not differ significantly from those operating by themselves in terms of workload but did in regard to stress; posttask distress was significantly lower for coacting than for single observers. Conclusion: Performing a visual vigilance task in a coactive manner with another observer does not elevate workload above that of observers working alone and serves to attenuate the stress associated with vigilance task performance. Application: The use of coacting observers could be an effective vehicle for enhancing performance efficiency in operational vigilance. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - vigilance KW - coacting groups KW - multiobserver independence/dependence KW - evaluation apprehension KW - workload KW - stress KW - 2016 KW - Group Performance KW - Group Structure KW - Vigilance KW - Work Load KW - Task KW - Stress KW - 2016 DO - 10.1177/0018720816646657 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-38131-008&site=ehost-live&scope=site UR - Gregory.Funke.1@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Zhangzhang Cui AU - Hui Xu AU - Yu Yun AU - Jinghua Guo AU - Yi-De Chuang AU - Haoliang Huang AU - Dechao Meng AU - Jianlin Wang AU - Zhengping Fu AU - Ranran Peng AU - Knize, Randy J. AU - Brown, Gail J. AU - Xiaofang Zhai AU - Yalin Lu T1 - Soft X-ray absorption spectroscopy investigations of Bi6FeCoTi3O18 and LaBi5FeCoTi3O18 epitaxial thin films. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2016/08/28/ VL - 120 IS - 8 M3 - Article SP - 084101-1 EP - 084101-5 SN - 00218979 AB - High-quality single-crystalline Bi6FeCoTi3O18 and LaBi5FeCoTi3O18 thin films were prepared by pulsed laser deposition. X-ray diffraction characterizations indicate a more disordered lattice structure of the LaBi5FeCoTi3O18 film. The magnetic measurement results demonstrated significantly enhanced ferromagnetism in the LaBi5FeCoTi3O18 film. The modulation of oxidation and hybridization states caused by substituting Bi with La was studied using the soft X-ray absorption spectroscopy. The spectroscopic results revealed the reduced concentration of oxygen vacancies and the more distorted lattice structure in the LaBi5FeCoTi3O18 film, which explained the enhanced ferromagnetism. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - X-ray absorption KW - SPECTRUM analysis KW - THIN films KW - FERROMAGNETISM KW - PULSED laser deposition N1 - Accession Number: 117838586; Zhangzhang Cui 1,2 Hui Xu 1 Yu Yun 1 Jinghua Guo 3 Yi-De Chuang 3 Haoliang Huang 1,2 Dechao Meng 1 Jianlin Wang 1,4 Zhengping Fu 1,2 Ranran Peng 1,2 Knize, Randy J. 5 Brown, Gail J. 6 Xiaofang Zhai 1,2; Email Address: xfzhai@ustc.edu.cn Yalin Lu 1,2,4,5; Email Address: yllu@ustc.edu.cn; Affiliation: 1: Hefei National Laboratory for Physical Sciences at Microscale and Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, Anhui, China 2: Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, Anhui, China 3: Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA 4: National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, Anhui, China 5: Laser Optics Research Center, Department of Physics, United States Air Force Academy, Colorado Springs, Colorado 80840, USA 6: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7707, USA; Source Info: 8/28/2016, Vol. 120 Issue 8, p084101-1; Subject Term: X-ray absorption; Subject Term: SPECTRUM analysis; Subject Term: THIN films; Subject Term: FERROMAGNETISM; Subject Term: PULSED laser deposition; Number of Pages: 5p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.4961392 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117838586&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ard, Shaun G. AU - Shuman, Nicholas S. AU - Martinez Jr., Oscar AU - Armentrout, P. B. AU - Viggiano, Albert A. T1 - Chemi-ionization reactions of La, Pr, Tb, and Ho with atomic O and La with N2O from 200 to 450 K. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2016/08/28/ VL - 145 IS - 8 M3 - Article SP - 1 EP - 7 SN - 00219606 AB - The chemi-ionization rate coefficients of La, Pr, Tb, and Ho with O have been measured from 200 to 450 K using a thermalized flow tube apparatus. Both La and Tb were found to react near the calculated hard sphere collision limit, while the Pr and Ho reactions proceeded at roughly 40% of that limit at all temperatures. The efficiencies of these reactions are considered and the near thermoneutral character of the reaction with Ho can explain this case, whereas an explanation for the inefficiency of the Pr reaction remains elusive. The chemi-ionization reaction of La with N2O was also studied and found to proceed roughly 2 orders of magnitude slower than the competing neutral oxidation pathway. The latter result disagrees with previous literature reports. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONIZATION (Atomic physics) -- Kinetics KW - NITROGEN oxides KW - TUBES KW - COLLISIONS (Physics) KW - LANTHANUM KW - PRASEODYMIUM N1 - Accession Number: 117931310; Ard, Shaun G. 1 Shuman, Nicholas S. 1 Martinez Jr., Oscar 1 Armentrout, P. B. 2 Viggiano, Albert A. 1; Email Address: afrl.rvborgmailbox@kirtland.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA 2: Department of Chemistry, University of Utah, 315 South 1400 East Rm 2020, Salt Lake City, Utah 84112, USA; Source Info: 2016, Vol. 145 Issue 8, p1; Subject Term: IONIZATION (Atomic physics) -- Kinetics; Subject Term: NITROGEN oxides; Subject Term: TUBES; Subject Term: COLLISIONS (Physics); Subject Term: LANTHANUM; Subject Term: PRASEODYMIUM; NAICS/Industry Codes: 331210 Iron and Steel Pipe and Tube Manufacturing from Purchased Steel; Number of Pages: 7p; Illustrations: 1 Diagram, 3 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.4961263 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117931310&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mills, Jeffrey D. AU - Ben-Nun, Michal AU - Rollin, Kyle AU - Bromley, Michael W. J. AU - Jiabo Li AU - Hinde, Robert J. AU - Winstead, Carl L. AU - Sheehy, Jeffrey A. AU - Boatz, Jerry A. AU - Langhoff, Peter W. T1 - Atomic Spectral Methods for Ab Initio Molecular Electronic Energy Surfaces: Transitioning From Small-Molecule to Biomolecular-Suitable Approaches. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2016/08/25/ VL - 120 IS - 33 M3 - Article SP - 8321 EP - 8337 SN - 15206106 AB - Continuing attention has addressed incorportation of the electronically dynamical attributes of biomolecules in the largely static first-generation molecular-mechanical force fields commonly employed in molecular-dynamics simulations. We describe here a universal quantum-mechanical approach to calculations of the electronic energy surfaces of both small molecules and large aggregates on a common basis which can include such electronic attributes, and which also seems well-suited to adaptation in ab initio molecular-dynamics applications. In contrast to the more familiar orbital-product-based methodologies employed in traditional small-molecule computational quantum chemistry, the present approach is based on an "ex-post-facto" method in which Hamiltonian matrices are evaluated prior to wave function antisymmetrization, implemented here in the support of a Hilbert space of orthonormal products of many-electron atomic spectral eigenstates familiar from the van der Waals theory of long-range interactions. The general theory in its various forms incorporates the early semiempirical atoms- and diatomics-in-molecules approaches of Moffitt, Ellison, Tully, Kuntz, and others in a comprehensive mathematical setting, and generalizes the developments of Eisenschitz, London, Claverie, and others addressing electron permutation symmetry adaptation issues, completing these early attempts to treat van der Waals and chemical forces on a common basis. Exact expressions are obtained for molecular Hamiltonian matrices and for associated energy eigenvalues as sums of separate atomic and interaction-energy terms, similar in this respect to the forms of classical force fields. The latter representation is seen to also provide a long-missing general definition of the energies of individual atoms and of their interactions within molecules and matter free from subjective additional constraints. A computer code suite is described for calculations of the many-electron atomic eigenspectra and the pairwise-atomic Hamiltonian matrices required for practical applications. These matrices can be retained as functions of scalar atomic-pair separations and employed in assembling aggregate Hamiltonian matrices, with Wigner rotation matrices providing analytical representations of their angular degrees of freedom. In this way, ab initio potential energy surfaces are obtained in the complete absence of repeated evaluations and transformations of the one- and two-electron integrals at different molecular geometries required in most ab inito molecular calculations, with large Hamiltonian matrix assembly simplified and explicit diagonalizations avoided employing partitioning and Brillouin-Wigner or Rayleigh-Schrödinger perturbation theory. Illustrative applications of the important components of the formalism, selected aspects of the scaling of the approach, and aspects of "on-the-fly" interfaces with Monte Carlo and molecular-dynamics methods are described in anticipation of subsequent applications to biomolecules and other large aggregates. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR dynamics -- Simulation methods KW - BIOMOLECULES KW - ATOMIC spectra KW - MOLECULAR electronics KW - SMALL molecules KW - QUANTUM mechanics N1 - Accession Number: 117716541; Mills, Jeffrey D. 1 Ben-Nun, Michal 2 Rollin, Kyle 3 Bromley, Michael W. J. 4 Jiabo Li 5 Hinde, Robert J. 6 Winstead, Carl L. 7 Sheehy, Jeffrey A. 8 Boatz, Jerry A. 1 Langhoff, Peter W. 9; Email Address: planghoff@mail.ucsd.edu; Affiliation: 1: Air Force Research Laboratory, 10 East Saturn Boulevard, Edwards AFB, California 93524-7680, United States 2: Predictive Science, Inc., 9990 Mesa Rim Road #170, San Diego, California 92121, United States 3: Northrup Grumman Corporation, 1 Rancho Carmel Drive, San Diego, California 92128, United States 4: School of Mathematics and Physics, The University of Queensland, Brisbane, Queensland 4072, Australia 5: Accelrys Inc., 10188 Telesis Court #100, San Diego, California 92121-4779, United States 6: Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996-1600, United States 7: A.A. Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125, United States 8: NASA Headquarters, 300 E Street SW, Suite 5R30, Washington, DC 201546, United States 9: Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MS 0365, La Jolla, California 92093-0365, United States; Source Info: Aug2016, Vol. 120 Issue 33, p8321; Subject Term: MOLECULAR dynamics -- Simulation methods; Subject Term: BIOMOLECULES; Subject Term: ATOMIC spectra; Subject Term: MOLECULAR electronics; Subject Term: SMALL molecules; Subject Term: QUANTUM mechanics; Number of Pages: 17p; Document Type: Article L3 - 10.1021/acs.jpcb.6b02021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117716541&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ahn, Suk-kyun AU - Ware, Taylor H. AU - Lee, Kyung Min AU - Tondiglia, Vincent P. AU - White, Timothy J. T1 - Optically Deformable Materials: Photoinduced Topographical Feature Development in Blueprinted Azobenzene-Functionalized Liquid Crystalline Elastomers (Adv. Funct. Mater. 32/2016). JO - Advanced Functional Materials JF - Advanced Functional Materials Y1 - 2016/08/23/ VL - 26 IS - 32 M3 - Article SP - 5818 EP - 5818 SN - 1616301X AB - The article offers information on the report conducted by T. J. White and colleagues about the deformation of azobenzene-functionalized liquid crystalline elastomers wherein ultraviolet (UV) light irradiation was used to transform original sheet to topographical surfaces. KW - AZOBENZENE -- Crystallography KW - ULTRAVIOLET radiation KW - actuators KW - liquid crystals KW - photochemistry KW - polymeric materials KW - stimuli-responsive materials N1 - Accession Number: 117603693; Ahn, Suk-kyun 1,2,3 Ware, Taylor H. 1,2,4 Lee, Kyung Min 1,2 Tondiglia, Vincent P. 1 White, Timothy J. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base 2: Azimuth Corporation 3: Department of Polymer Science and Engineering, Pusan National University 4: Department of Bioengineering, The University of Texas at Dallas; Source Info: 8/23/2016, Vol. 26 Issue 32, p5818; Subject Term: AZOBENZENE -- Crystallography; Subject Term: ULTRAVIOLET radiation; Author-Supplied Keyword: actuators; Author-Supplied Keyword: liquid crystals; Author-Supplied Keyword: photochemistry; Author-Supplied Keyword: polymeric materials; Author-Supplied Keyword: stimuli-responsive materials; Number of Pages: 1p; Document Type: Article L3 - 10.1002/adfm.201670208 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117603693&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ahn, Suk-kyun AU - Ware, Taylor H. AU - Lee, Kyung Min AU - Tondiglia, Vincent P. AU - White, Timothy J. T1 - Photoinduced Topographical Feature Development in Blueprinted Azobenzene-Functionalized Liquid Crystalline Elastomers. JO - Advanced Functional Materials JF - Advanced Functional Materials Y1 - 2016/08/23/ VL - 26 IS - 32 M3 - Article SP - 5819 EP - 5826 SN - 1616301X AB - All-optical deformation and recovery of complex topographical features is demonstrated within elastic sheets composed of main-chain type azobenzene-functionalized liquid crystalline elastomers (azo-LCEs). The azo-LCEs are synthesized via an orthogonal, two-step reaction between commercially available LC monomers and n-butylamine. By employing surface alignment, the local orientation of the nematic director is spatially complex ('blueprinted'). Exposing the blueprinted LCE films to light as an actinic stimulus generates a photomechanical response which yields reversible shape changes between 2D and 3D shapes. The deformation of azo-LCEs strongly depends on the azobenzene concentration as well as the network structure (i.e., crosslink density). Blueprinting complex director profiles within azo-LCEs yield reconfigurable elastic sheets that can be addressed both remotely and selectively which may have benefit in a variety of applications in aerospace, medicine, and optics. [ABSTRACT FROM AUTHOR] AB - Copyright of Advanced Functional Materials is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystal films KW - ELASTOMERS KW - AZOBENZENE KW - DEFORMATIONS (Mechanics) KW - BLUEPRINTING KW - actuators KW - liquid crystals KW - photochemistry KW - polymeric materials KW - stimuli-responsive materials N1 - Accession Number: 117603713; Ahn, Suk-kyun 1,2,3 Ware, Taylor H. 1,2,4 Lee, Kyung Min 1,2 Tondiglia, Vincent P. 1 White, Timothy J. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base 2: Azimuth Corporation 3: Department of Polymer Science and Engineering, Pusan National University 4: Department of Bioengineering, The University of Texas at Dallas; Source Info: 8/23/2016, Vol. 26 Issue 32, p5819; Subject Term: LIQUID crystal films; Subject Term: ELASTOMERS; Subject Term: AZOBENZENE; Subject Term: DEFORMATIONS (Mechanics); Subject Term: BLUEPRINTING; Author-Supplied Keyword: actuators; Author-Supplied Keyword: liquid crystals; Author-Supplied Keyword: photochemistry; Author-Supplied Keyword: polymeric materials; Author-Supplied Keyword: stimuli-responsive materials; NAICS/Industry Codes: 561439 Other Business Service Centers (including Copy Shops); NAICS/Industry Codes: 561430 Business service centres; NAICS/Industry Codes: 325992 Photographic Film, Paper, Plate, and Chemical Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 541340 Drafting Services; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325212 Synthetic Rubber Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1002/adfm.201601090 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117603713&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barlow, Daniel E. AU - Biffinger, Justin C. AU - Cockrell-Zugell, Allison L. AU - Lo, Michael AU - Kjoller, Kevin AU - Cook, Debra AU - Lee, Woo Kyung AU - Pehrsson, Pehr E. AU - Crookes-Goodson, Wendy J. AU - Hung, Chia-Suei AU - Nadeau, Lloyd J. AU - Russell, John N. T1 - The importance of correcting for variable probe–sample interactions in AFM-IR spectroscopy: AFM-IR of dried bacteria on a polyurethane film. JO - Analyst JF - Analyst Y1 - 2016/08/21/ VL - 141 IS - 16 M3 - Article SP - 4848 EP - 4854 SN - 00032654 AB - AFM-IR is a combined atomic force microscopy–infrared spectroscopy method that shows promise for nanoscale chemical characterization of biological–materials interactions. In an effort to apply this method to quantitatively probe mechanisms of microbiologically induced polyurethane degradation, we have investigated monolayer clusters of ∼200 nm thick Pseudomonas protegens Pf-5 bacteria (Pf) on a 300 nm thick polyether–polyurethane (PU) film. Here, the impact of the different biological and polymer mechanical properties on the thermomechanical AFM-IR detection mechanism was first assessed without the additional complication of polymer degradation. AFM-IR spectra of Pf and PU were compared with FTIR and showed good agreement. Local AFM-IR spectra of Pf on PU (Pf–PU) exhibited bands from both constituents, showing that AFM-IR is sensitive to chemical composition both at and below the surface. One distinct difference in local AFM-IR spectra on Pf–PU was an anomalous ∼4× increase in IR peak intensities for the probe in contact with Pf versus PU. This was attributed to differences in probe–sample interactions. In particular, significantly higher cantilever damping was observed for probe contact with PU, with a ∼10× smaller Q factor. AFM-IR chemical mapping at single wavelengths was also affected. We demonstrate ratioing of mapping data for chemical analysis as a simple method to cancel the extreme effects of the variable probe–sample interactions. [ABSTRACT FROM AUTHOR] AB - Copyright of Analyst is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYURETHANES KW - THIN films KW - ATOMIC force microscopy KW - INFRARED spectroscopy KW - MOLECULAR interactions N1 - Accession Number: 117137791; Barlow, Daniel E. 1 Biffinger, Justin C. 1 Cockrell-Zugell, Allison L. 2 Lo, Michael 3 Kjoller, Kevin 3 Cook, Debra 3 Lee, Woo Kyung 1 Pehrsson, Pehr E. 1 Crookes-Goodson, Wendy J. 4 Hung, Chia-Suei 4 Nadeau, Lloyd J. 4 Russell, John N. 1; Affiliation: 1: Chemistry Division, Naval Research Lab, Washington, DC 20375, USA 2: National Research Council Post-doctoral Research Associate, Washington, DC 20001, USA 3: Anasys Instruments, Inc., Santa Barbara, CA, USA 4: Soft Matter Materials Branch, Materials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: 8/21/2016, Vol. 141 Issue 16, p4848; Subject Term: POLYURETHANES; Subject Term: THIN films; Subject Term: ATOMIC force microscopy; Subject Term: INFRARED spectroscopy; Subject Term: MOLECULAR interactions; Number of Pages: 7p; Document Type: Article L3 - 10.1039/c6an00940a UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117137791&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Paranjape, Kiran AU - Leite, Gustavo B. AU - Hallenbeck, Patrick C. T1 - Effect of nitrogen regime on microalgal lipid production during mixotrophic growth with glycerol. JO - Bioresource Technology JF - Bioresource Technology Y1 - 2016/08/15/ VL - 214 M3 - Article SP - 778 EP - 786 SN - 09608524 AB - Mixotrophic growth of microalgae to boost lipid production is currently under active investigation. Such a process could be of practical importance if a cheap source of organic carbon, such as waste glycerol from biodiesel production, could be used. Several previous studies have already demonstrated that this carbon source can be used by different indigenous strains of microalgae. In this study it is shown that different nitrogen limitation strategies can be applied to further increase lipid production during growth with glycerol. In one strategy, cultures were grown in nitrogen replete medium and then resuspended in nitrogen free medium. In a second strategy, cultures were grown with different initial concentrations of nitrate. Lipid production by the two microalgal strains used, Chlorella sorokiniana (PCH02) and Chlorella vulgaris (PCH05), was shown to be boosted by strategies of nitrogen limitation, but they responded differently to how nitrogen limitation was imposed. [ABSTRACT FROM AUTHOR] AB - Copyright of Bioresource Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Microalgae KW - Nitrogen KW - Biodiesel fuels KW - Lipids KW - Algal growth KW - Glycerin KW - Biofuels KW - Lipid production KW - Mixotrophic growth KW - Nitrogen limitation N1 - Accession Number: 115919969; Paranjape, Kiran 1; Leite, Gustavo B. 1; Hallenbeck, Patrick C. 1,2; Email Address: patrick.hallenbeck@umontreal.ca; Affiliations: 1: Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, CP6128 Succursale Centre-ville, Montréal, Québec H3C 3J7, Canada; 2: Life Sciences Research Center, Department of Biology, United States Air Force Academy, 2355 Faculty Drive, USAF Academy, CO 80840, United States; Issue Info: Aug2016, Vol. 214, p778; Thesaurus Term: Microalgae; Thesaurus Term: Nitrogen; Thesaurus Term: Biodiesel fuels; Subject Term: Lipids; Subject Term: Algal growth; Subject Term: Glycerin; Author-Supplied Keyword: Biofuels; Author-Supplied Keyword: Lipid production; Author-Supplied Keyword: Mixotrophic growth; Author-Supplied Keyword: Nitrogen limitation; NAICS/Industry Codes: 325611 Soap and Other Detergent Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.biortech.2016.05.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=115919969&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Turgut, Z. AU - Lucas, M.S. AU - Leontsev, S. AU - Semiatin, S.L. AU - Horwath, J. T1 - Metastable Co3C nanocrystalline powder produced via reactive ball milling: Synthesis and magnetic properties. JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2016/08/15/ VL - 676 M3 - Article SP - 187 EP - 192 SN - 09258388 AB - This study investigates reactive ball milling synthesis of a single phase metastable Co 3 C compound from starting mixtures of cobalt and graphite powders under argon and nitrogen environments. It reports their phase formations, magnetic, and structural properties. Regardless of the starting powder composition (25.0 or 33.3 at.% C) and milling atmosphere, reactive ball milling leads to the formation of the Co 3 C compound with an orthorhombic structure. Coercivities of the starting mixtures first increases with milling time as the Co 3 C compound starts to form and subsequently decreases due to structural defects induced by further milling. Higher graphite containing starting powder mixtures yield higher peak coercivity values and higher transformation rates. The formed Co 3 C compound exhibits a Curie temperature of 563 K and a decomposition temperature around 710 K. Compared to argon milled powders, reactive milling under a nitrogen atmosphere increases the coercivity and decomposition temperature of the Co 3 C compound. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOCRYSTAL synthesis KW - NANOCRYSTALS -- Magnetic properties KW - COBALT compounds KW - MECHANICAL alloying KW - POWDER metallurgy KW - NITROGEN KW - DECOMPOSITION (Chemistry) KW - Coercivity KW - Hard magnets KW - Mechanical alloying KW - Metastable phases KW - Nanocrystalline alloys N1 - Accession Number: 114673996; Turgut, Z. 1 Lucas, M.S. 1; Email Address: matthew.steven.lucas@gmail.com Leontsev, S. 1,2 Semiatin, S.L. 1 Horwath, J. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: University of Dayton Research Institute, Dayton, OH 45469-0170, USA; Source Info: Aug2016, Vol. 676, p187; Subject Term: NANOCRYSTAL synthesis; Subject Term: NANOCRYSTALS -- Magnetic properties; Subject Term: COBALT compounds; Subject Term: MECHANICAL alloying; Subject Term: POWDER metallurgy; Subject Term: NITROGEN; Subject Term: DECOMPOSITION (Chemistry); Author-Supplied Keyword: Coercivity; Author-Supplied Keyword: Hard magnets; Author-Supplied Keyword: Mechanical alloying; Author-Supplied Keyword: Metastable phases; Author-Supplied Keyword: Nanocrystalline alloys; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 332117 Powder Metallurgy Part Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jallcom.2016.03.095 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114673996&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yang, F. C. AU - Muñoz, J. A. AU - Hellman, O. AU - Mauger, L. AU - Lucas, M. S. AU - Tracy, S. J. AU - Stone, M. B. AU - Abernathy, D. L. AU - Yuming Xiao AU - Fultz, B. T1 - Thermally Driven Electronic Topological Transition in FeTi. JO - Physical Review Letters JF - Physical Review Letters Y1 - 2016/08/12/ VL - 117 IS - 7 M3 - Article SP - 1 EP - 1 SN - 00319007 AB - Ab initio molecular dynamics, supported by inelastic neutron scattering and nuclear resonant inelastic x-ray scattering, showed an anomalous thermal softening of the M5- phonon mode in B2-ordered FeTi that could not be explained by phonon-phonon interactions or electron-phonon interactions calculated at low temperatures. A computational investigation showed that the Fermi surface undergoes a novel thermally driven electronic topological transition, in which new features of the Fermi surface arise at elevated temperatures. The thermally induced electronic topological transition causes an increased electronic screening for the atom displacements in the M5- phonon mode and an adiabatic electron-phonon interaction with an unusual temperature dependence. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review Letters is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IRON compounds KW - INELASTIC neutron scattering KW - X-ray scattering KW - YANG, F. C. KW - MUNOZ, J. A. KW - HELLMAN, O. KW - MAUGER, L. KW - LUCAS, M. S. KW - TRACY, S. J. KW - STONE, M. B. KW - ABERNATHY, D. L. KW - PHYSICAL Review Letters (Periodical) N1 - Accession Number: 118978391; Yang, F. C. 1 Muñoz, J. A. 1,2 Hellman, O. 1 Mauger, L. 1 Lucas, M. S. 1,3 Tracy, S. J. 1 Stone, M. B. 4 Abernathy, D. L. 4 Yuming Xiao 5 Fultz, B. 1; Affiliation: 1: Applied Physics and Materials Science, California Institute of Technology, Pasadena, California 91125, USA 2: The Datum Institute, Beaverton, Oregon 97005, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 4: Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 5: HPCAT, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, Illinois 60439, USA; Source Info: 8/12/2016, Vol. 117 Issue 7, p1; Subject Term: IRON compounds; Subject Term: INELASTIC neutron scattering; Subject Term: X-ray scattering; Reviews & Products: PHYSICAL Review Letters (Periodical); NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; People: YANG, F. C.; People: MUNOZ, J. A.; People: HELLMAN, O.; People: MAUGER, L.; People: LUCAS, M. S.; People: TRACY, S. J.; People: STONE, M. B.; People: ABERNATHY, D. L.; Number of Pages: 1p; Document Type: Article L3 - 10.1103/PhysRevLett.117.076402 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118978391&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Joyce, Donna M. AU - Ouchen, Fahima AU - Grote, James G. T1 - Re-engineering the Polymer Capacitor, Layer by Layer. JO - Advanced Energy Materials JF - Advanced Energy Materials Y1 - 2016/08/10/ VL - 6 IS - 15 M3 - Article SP - n/a EP - n/a SN - 16146832 AB - The article focuses on a research about achieving higher energy densities by re-engineering the architecture of polymer capacitors. It provides an overview of the capacitor device which is a layered structure incorporating thin electron and hole blocking layers deposited between the conducting electrodes and the dielectric material. KW - POLYMERS KW - MACROMOLECULES KW - CAPACITORS KW - DIELECTRIC devices KW - ELECTRIC capacity KW - ENERGY storage KW - ELECTRODES KW - blocking layers KW - energy storage KW - high energy density materials KW - polymer capacitors KW - polymers N1 - Accession Number: 117320497; Joyce, Donna M. 1 Ouchen, Fahima 1,2 Grote, James G. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base 2: University of Dayton Research Institute; Source Info: 8/10/2016, Vol. 6 Issue 15, pn/a; Subject Term: POLYMERS; Subject Term: MACROMOLECULES; Subject Term: CAPACITORS; Subject Term: DIELECTRIC devices; Subject Term: ELECTRIC capacity; Subject Term: ENERGY storage; Subject Term: ELECTRODES; Author-Supplied Keyword: blocking layers; Author-Supplied Keyword: energy storage; Author-Supplied Keyword: high energy density materials; Author-Supplied Keyword: polymer capacitors; Author-Supplied Keyword: polymers; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 4p; Document Type: Article L3 - 10.1002/aenm.201600676 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117320497&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Khan, Simeen AU - Zhoufeng Jiang AU - Premathilka, Shashini M. AU - Antara Antu AU - Jianjun Hu AU - Voevodin, Andrey A. AU - Roland, Paul J. AU - Ellingson, Randy J. AU - Liangfeng Sun T1 - Few-Atom-Thick Colloidal PbS/CdS Core/Shell Nanosheets. JO - Chemistry of Materials JF - Chemistry of Materials Y1 - 2016/08/09/ VL - 28 IS - 15 M3 - Article SP - 5342 EP - 5346 SN - 08974756 AB - Emissive PbS/CdS core/shell nanosheets are synthesized using a cation-exchange method. A significant blue-shift of the photoluminescence is observed, indicating a stronger quantum confinement in the PbS core as its thickness is reduced. High resolution transmission-electron-microscopy images of the cross sections of the core/shell nanosheets show atomically sharp interfaces between PbS and CdS. Accurate analysis of the thickness of each layer reveals the relationship between the energy gap and the thickness in the extremely one-dimensionally confined nanostructure. Photoluminescence lifetime of the core/shell nanosheets is significantly longer than the core-only nanosheets, indicating better surface passivation. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemistry of Materials is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEAD sulfide KW - CADMIUM sulfide KW - NANOSTRUCTURED materials -- Synthesis KW - COLLOIDS KW - SEMICONDUCTOR nanoparticles KW - ION exchange (Chemistry) KW - QUANTUM confinement effects N1 - Accession Number: 117401405; Khan, Simeen 1 Zhoufeng Jiang 1,2 Premathilka, Shashini M. 1,2 Antara Antu 1 Jianjun Hu 3 Voevodin, Andrey A. 3 Roland, Paul J. 4 Ellingson, Randy J. 4 Liangfeng Sun 1,2; Email Address: lsun@bgsu.edu; Affiliation: 1: Department of Physics and Astronomy, Bowling Green State University, Bowling Green, Ohio 43403, United States 2: Center of Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, United States 4: Department of Physics and Astronomy, Wright Center for Photovoltaics Innovation and Commercialization, School of Solar and Advanced Renewable Energy, University of Toledo, Toledo, Ohio 43606, United States; Source Info: Aug2016, Vol. 28 Issue 15, p5342; Subject Term: LEAD sulfide; Subject Term: CADMIUM sulfide; Subject Term: NANOSTRUCTURED materials -- Synthesis; Subject Term: COLLOIDS; Subject Term: SEMICONDUCTOR nanoparticles; Subject Term: ION exchange (Chemistry); Subject Term: QUANTUM confinement effects; Number of Pages: 5p; Document Type: Article L3 - 10.1021/acs.chemmater.6b01232 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117401405&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Torres, Ana M. AU - Scheiner, Steve AU - Roy, Ajit K. AU - Garay-Tapia, Andrés M. AU - Bustamante, John AU - Kar, Tapas T1 - Segmentation and additive approach: A reliable technique to study noncovalent interactions of large molecules at the surface of single-wall carbon nanotubes. JO - Journal of Computational Chemistry JF - Journal of Computational Chemistry Y1 - 2016/08/05/ VL - 37 IS - 21 M3 - Article SP - 1953 EP - 1961 SN - 01928651 AB - This investigation explores a new protocol, named Segmentation and Additive approach (SAA), to study exohedral noncovalent functionalization of single-walled carbon nanotubes with large molecules, such as polymers and biomolecules, by segmenting the entire system into smaller units to reduce computational cost. A key criterion of the segmentation process is the preservation of the molecular structure responsible for stabilization of the entire system in smaller segments. Noncovalent interaction of linoleic acid (LA, C18H32O2), a fatty acid, at the surface of a (10,0) zigzag nanotube is considered for test purposes. Three smaller segmented models have been created from the full (10,0)-LA system and interaction energies were calculated for these models and compared with the full system at different levels of theory, namely ωB97XD, LDA. The success of this SAA is confirmed as the sum of the interaction energies is in very good agreement with the total interaction energy. Besides reducing computational cost, another merit of SAA is an estimation of the contributions from different sections of the large system to the total interaction energy which can be studied in-depth using a higher level of theory to estimate several properties of each segment. On the negative side, bulk properties, such as HOMO-LUMO (highest occupied molecular orbital - lowest occupied molecular orbital) gap, of the entire system cannot be estimated by adding results from segment models. © 2016 Wiley Periodicals, Inc. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Computational Chemistry is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SINGLE walled carbon nanotubes KW - MOLECULAR structure KW - BIOMOLECULES KW - FATTY acids KW - LINOLEIC acid KW - WEAK interactions (Nuclear physics) KW - carbon nanotubes KW - DFT KW - fatty acid KW - noncovalent functionalization KW - segmentation and additive approach KW - weak interaction N1 - Accession Number: 116414392; Torres, Ana M. 1,2 Scheiner, Steve 3 Roy, Ajit K. 4 Garay-Tapia, Andrés M. 2 Bustamante, John 1 Kar, Tapas 3; Affiliation: 1: Grupo de Dinámica Cardiovascular, Centro de Bioingeniería, Universidad Pontificia Bolivariana 2: Grupo de Termodinámica Computacional, Centro de Investigaciû°n en Materiales Avanzados (CIMAV), Unidad Monterrey 3: Department of Chemistry and Biochemistry, Utah State University 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base; Source Info: 8/5/2016, Vol. 37 Issue 21, p1953; Subject Term: SINGLE walled carbon nanotubes; Subject Term: MOLECULAR structure; Subject Term: BIOMOLECULES; Subject Term: FATTY acids; Subject Term: LINOLEIC acid; Subject Term: WEAK interactions (Nuclear physics); Author-Supplied Keyword: carbon nanotubes; Author-Supplied Keyword: DFT; Author-Supplied Keyword: fatty acid; Author-Supplied Keyword: noncovalent functionalization; Author-Supplied Keyword: segmentation and additive approach; Author-Supplied Keyword: weak interaction; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1002/jcc.24414 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116414392&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Busa, Kristin M. AU - Rice, Brian E. AU - McDaniel, James C. AU - Goyne, Christopher P. AU - Rockwell, Robert D. AU - Fulton, Jesse A. AU - Edwards, Jack R. AU - Diskin, Glenn S. T1 - Scramjet Combustion Efficiency Measurement via Tomographic Absorption Spectroscopy and Particle Image Velocimetry. JO - AIAA Journal JF - AIAA Journal Y1 - 2016/08// VL - 54 IS - 8 M3 - Article SP - 2463 EP - 2471 SN - 00011452 AB - The combustion efficiency of a scramjet is a metric that evaluates the overall performance of the engine. Until recently, combustion efficiency was measured using indirect approaches such as a one-dimensional control volume calculation or a calorimeter and wall pressure tap measurements. A novel nonintrusive direct approach for the measurement of combustion efficiency is presented that combines the optical diagnostic techniques tunable diode laser absorption tomography and stereoscopic particle image velocimetry. Experimental results are presented for measurements of the University of Virginia's Supersonic Combustion Facility in both the scram and ram-modes of operation. The tunable-diode-laser-absorption-tomography/stereoscopic-particle-image-velocimetry method directly measures the converted hydrogen (via water vapor) mass flow rate exiting the dual-mode scramjet and compares this to the facility-measured injected hydrogen fuel mass flow rate. A complementary computational fluid dynamics study was performed and results are available for the scram-mode operating condition. The results reported show excellent agreement between the tunable-diode-laser-absorption-tomography/stereoscopic-particle-image-velocimetry-measured combustion efficiency and the computational-fluid-dynamics-predicted combustion efficiency for the scram-mode of operation, which are both near 99%. The tunable-diode-laser-absorption-tomography/stereoscopic-particle-image-velocimetry-measured combustion efficiency for the ram-mode of operation is shown to be lower than that of the scram-mode operation: at 79%. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 118057487; Busa, Kristin M. 1 Rice, Brian E. 2 McDaniel, James C. 3 Goyne, Christopher P. 3 Rockwell, Robert D. 3 Fulton, Jesse A. 4 Edwards, Jack R. 5 Diskin, Glenn S. 6; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542 2: U.S. Air Force Research Laboratory, Arnold Air Force Base, Tennessee 37389 3: University of Virginia, Charlottesville, Virginia 22904 4: Sandia National Laboratories, Albuquerque, New Mexico 87185 5: North Carolina State University, Raleigh, North Carolina 27695 6: NASA Langley Research Center, Hampton, Virginia 23681; Source Info: Aug2016, Vol. 54 Issue 8, p2463; Number of Pages: 9p; Document Type: Article L3 - 10.2514/1.J054662 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118057487&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - LeCroy, Gregory E. AU - Yang, Sheng-Tao AU - Yang, Fan AU - Liu, Yamin AU - Fernando, K. A. Shiral AU - Bunker, Christopher E. AU - Hu, Yin AU - Luo, Pengju G. AU - Sun, Ya-Ping T1 - Functionalized carbon nanoparticles: Syntheses and applications in optical bioimaging and energy conversion. JO - Coordination Chemistry Reviews JF - Coordination Chemistry Reviews Y1 - 2016/08// VL - 320 M3 - Article SP - 66 EP - 81 SN - 00108545 AB - Semiconductor quantum dots (QDs) are known for their unique optical properties. In recent years, carbon nanomaterials of surface and/or structural defects have been found to exhibit similar properties after functionalization in various schemes. Among these carbon-based QDs are carbon dots, which are generally defined as small carbon nanoparticles with surface passivation. In fact, carbon dots now represent a rapidly advancing and expanding research field. As measured by the optical properties of carbon dots, the most effective passivation has been the surface functionalization of carbon nanoparticles with organic or polymeric molecules, corresponding to much brighter fluorescence emissions across the visible spectrum and extending into the near-IR. Therefore, carbon dots have been pursued extensively for potential bioimaging and other biomedical applications. The mechanistic framework for carbon dots includes photoinduced redox processes, similar to those found in conventional semiconductor QDs. As a result, carbon dots have also been pursued for their photocatalytic functions. In this article on surface-functionalized carbon nanoparticles or carbon dots, their representative syntheses and demonstrated properties and their potential uses as high-performance yet nontoxic fluorescence probes for bioimaging in vitro and in vivo are highlighted, so is their serving as potent photocatalysts in energy conversion applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Coordination Chemistry Reviews is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES -- Optical properties KW - SEMICONDUCTOR quantum dots KW - ENERGY conversion KW - SURFACES (Technology) -- Defects KW - FLUORESCENCE KW - CARBON KW - Carbon dots KW - Charge transfer KW - Energy conversion KW - Fluorescence KW - Functionalized nanoparticles KW - Optical imaging N1 - Accession Number: 116186560; LeCroy, Gregory E. 1 Yang, Sheng-Tao 2; Email Address: yangst@pku.edu.cn Yang, Fan 1 Liu, Yamin 1 Fernando, K. A. Shiral 3 Bunker, Christopher E. 4; Email Address: christopher.bunker@wpafb.af.mil Hu, Yin 1 Luo, Pengju G. 1 Sun, Ya-Ping 1; Email Address: syaping@clemson.edu; Affiliation: 1: Department of Chemistry and Laboratory for Emerging Materials and Technology, Clemson University, Clemson, SC 29634, USA 2: College of Chemistry and Environment Protection Engineering, Southwest University for Nationalities, Chengdu 610041, China 3: University of Dayton Research Institute, Sensors Technology Office, Dayton, OH 45469, USA 4: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Aug2016, Vol. 320, p66; Subject Term: NANOPARTICLES -- Optical properties; Subject Term: SEMICONDUCTOR quantum dots; Subject Term: ENERGY conversion; Subject Term: SURFACES (Technology) -- Defects; Subject Term: FLUORESCENCE; Subject Term: CARBON; Author-Supplied Keyword: Carbon dots; Author-Supplied Keyword: Charge transfer; Author-Supplied Keyword: Energy conversion; Author-Supplied Keyword: Fluorescence; Author-Supplied Keyword: Functionalized nanoparticles; Author-Supplied Keyword: Optical imaging; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.ccr.2016.02.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116186560&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shukla, R. K. AU - Evans, D. R. AU - Haase, W. T1 - Ferroelectric BaTiO 3 and LiNbO 3 nanoparticles dispersed in ferroelectric liquid crystal mixtures: Electrooptic and dielectric parameters influenced by properties of the host, the dopant and the measuring cell. JO - Ferroelectrics JF - Ferroelectrics Y1 - 2016/08// VL - 500 IS - 1 M3 - Article SP - 141 EP - 152 SN - 00150193 AB - Harvested ferroelectric nanoparticles of BaTiO3and LiNbO3were dispersed in Ferroelectric Liquid Crystals (FLCs) with very high spontaneous polarization (Ps). The electrooptic and dielectric parameters were documented. The dipoles of ferroelectric nanoparticles and those of FLCs are partially cancelled in an antiparallel manner. The role of cell parameters like thickness of the Nylon 6 polymer layer and the change in preparation of the polymer layer due to different mechanical rubbing cycles has been described for one high-PsFLC and for high-PsFLC/BaTiO3nanocolloids. Cell properties depend strongly on anchoring forces which might interact with dipoles both from ferroelectric nanoparticles and high-PsFLCs. [ABSTRACT FROM AUTHOR] AB - Copyright of Ferroelectrics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BARIUM titanate KW - LITHIUM niobate KW - FERROELECTRIC materials KW - METAL nanoparticles KW - FERROELECTRIC liquid crystals KW - ELECTROOPTICS KW - DIELECTRICS KW - Ferroelectric liquid crystals KW - FLC-nanocomposites KW - solid state ferroelectrics KW - surface phenomena N1 - Accession Number: 118836011; Shukla, R. K. 1,2 Evans, D. R. 3 Haase, W. 1; Affiliation: 1: Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Germany 2: Department of Physics, DIT University, Dehradun, Uttarakhand, India 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio, USA; Source Info: 2016, Vol. 500 Issue 1, p141; Subject Term: BARIUM titanate; Subject Term: LITHIUM niobate; Subject Term: FERROELECTRIC materials; Subject Term: METAL nanoparticles; Subject Term: FERROELECTRIC liquid crystals; Subject Term: ELECTROOPTICS; Subject Term: DIELECTRICS; Author-Supplied Keyword: Ferroelectric liquid crystals; Author-Supplied Keyword: FLC-nanocomposites; Author-Supplied Keyword: solid state ferroelectrics; Author-Supplied Keyword: surface phenomena; Number of Pages: 12p; Document Type: Article L3 - 10.1080/00150193.2016.1215206 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118836011&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grupen, Matt T1 - GaN High Electron Mobility Transistor Simulations With Full Wave and Hot Electron Effects. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices Y1 - 2016/08// VL - 63 IS - 8 M3 - Article SP - 3096 EP - 3102 SN - 00189383 AB - The Fermi kinetics transport model is combined with Maxwell’s full wave vector field equations to accurately simulate a GaN high electron mobility transistor’s measured behavior from dc up into the millimeter-wave frequency range. Explicitly including the GaN wurtzite crystal’s electronic band structure and phonon scattering processes as well as electromagnetic wave effects, the simulator can capture the essential physics of this hot electron device and compare favorably with experiment without using adjustable fitting parameters. The simulator is further used to demonstrate how propagating waves and hot electrons are manifest in the measured data. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON mobility KW - ELECTRIC conductivity KW - ELECTRON transport KW - ELECTRONS KW - PHONONS KW - Boltzmann equation KW - Delaunay KW - energy transport KW - Fermi kinetics KW - full wave electromagnetics (EM) KW - Gallium nitride KW - GaN high electron mobility transistor (HEMT) simulation KW - HEMTs KW - hot electrons KW - Isosurfaces KW - Mathematical model KW - Mobile communication KW - Phonons KW - Scattering KW - thermal physics KW - Voronoi N1 - Accession Number: 117001879; Grupen, Matt 1; Affiliation: 1: Air Force Research Laboratory, Senors Directorate, Wright-Patterson AFB, OH, USA; Source Info: Aug2016, Vol. 63 Issue 8, p3096; Subject Term: ELECTRON mobility; Subject Term: ELECTRIC conductivity; Subject Term: ELECTRON transport; Subject Term: ELECTRONS; Subject Term: PHONONS; Author-Supplied Keyword: Boltzmann equation; Author-Supplied Keyword: Delaunay; Author-Supplied Keyword: energy transport; Author-Supplied Keyword: Fermi kinetics; Author-Supplied Keyword: full wave electromagnetics (EM); Author-Supplied Keyword: Gallium nitride; Author-Supplied Keyword: GaN high electron mobility transistor (HEMT) simulation; Author-Supplied Keyword: HEMTs; Author-Supplied Keyword: hot electrons; Author-Supplied Keyword: Isosurfaces; Author-Supplied Keyword: Mathematical model; Author-Supplied Keyword: Mobile communication; Author-Supplied Keyword: Phonons; Author-Supplied Keyword: Scattering; Author-Supplied Keyword: thermal physics; Author-Supplied Keyword: Voronoi; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TED.2016.2581591 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117001879&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Seviour, Rebecca AU - Shiffler, Don AU - Jelonnek, John AU - Grabowski, Chris AU - Hemmady, Sameer AU - Ang, Ricky L. K. T1 - Guest Editorial The Sixteenth Special Issue on High-Power Microwave Generation. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2016/08//Aug2016 Part 1 VL - 44 IS - 8 M3 - Editorial SP - 1257 EP - 1257 SN - 00933813 AB - The publication of this Sixteenth Special Issue on High-Power Microwave (HPM) Generation continues a series first published in December 1985. Since the first volume, the field has witnessed tremendous changes and advances, with research spanning the range of academic institutions, corporate research groups, government laboratories, from across the world. The subject areas addressed have evolved, as well. In 1985, the topics spanned five categories: 1) gyrotrons and cyclotron-resonance devices; 2) free-electron lasers; 3) virtual-cathode and reflex oscillators; 4) Cerenkov radiation generators; and 5) magnetrons, klystrons, and backward-wave oscillators. These areas still remain as active areas of research interest, now augmented by the rapid advance of particle-in-cell codes and electromagnetic solvers as tools to model and help understand HPM devices. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVE power amplifiers KW - MICROWAVE oscillators KW - SUBMILLIMETER wave oscillators KW - BACKWARD wave oscillators KW - MAGNETRONS KW - Gyrotrons KW - High power microwave generation KW - Magnetrons KW - Metamaterials KW - Special issues and sections KW - Three-dimensional printing N1 - Accession Number: 117416230; Seviour, Rebecca 1 Shiffler, Don 2 Jelonnek, John 3 Grabowski, Chris 4 Hemmady, Sameer 5 Ang, Ricky L. K. 6; Affiliation: 1: School of Engineering, University of Huddersfield, Huddersfield, U.K. 2: Division Research Advisor High Power Microwave Division Air Force Research Laboratory Directed Energy Directorate Kirtland AFB, NM, USA 3: Director Institute for Pulsed Power and Microwave Technology (IHM), Karlsruhe Institute for Technology (KIT), Karlsruhe, Germany 4: Principal Research and Development Electrical Engineer, AGT Accelerator Operations Sandia National Laboratories, Albuquerque, NM, USA 5: XL Scientific, Albuquerque, NM, USA 6: Singapore University of Technology and Design, Singapore; Source Info: Aug2016 Part 1, Vol. 44 Issue 8, p1257; Subject Term: MICROWAVE power amplifiers; Subject Term: MICROWAVE oscillators; Subject Term: SUBMILLIMETER wave oscillators; Subject Term: BACKWARD wave oscillators; Subject Term: MAGNETRONS; Author-Supplied Keyword: Gyrotrons; Author-Supplied Keyword: High power microwave generation; Author-Supplied Keyword: Magnetrons; Author-Supplied Keyword: Metamaterials; Author-Supplied Keyword: Special issues and sections; Author-Supplied Keyword: Three-dimensional printing; Number of Pages: 1p; Document Type: Editorial L3 - 10.1109/TPS.2016.2593158 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117416230&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jordan, Nicholas M. AU - Greening, Geoffrey B. AU - Hoff, Brad W. AU - Maestas, Sabrina S. AU - Exelby, Steven C. AU - Gilgenbach, Ronald M. T1 - Additively Manufactured High Power Microwave Anodes. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2016/08//Aug2016 Part 1 VL - 44 IS - 8 M3 - Article SP - 1258 EP - 1264 SN - 00933813 AB - Additively manufactured components were successfully fielded for the first time in a relativistic crossed-field device. Anode structures for a relativistic planar magnetron were 3-D printed from a photopolymer using a stereolithography printing process. One anode was electroplated with copper (RPM-12b), whereas the other was thermal sprayed with copper (RPM-12c). The coating thicknesses at the vane tips were approximately 0.18 and 0.23 mm, respectively. The performance and durability of these structures were evaluated in comparison with a solid aluminum anode (RPM-12a) fabricated via conventional machining. The experimental parameters were cathode voltages between −150 and −300 kV, voltage pulse lengths of 200 to 600 ns, axial magnetic fields of 0.13 to 0.31 T, peak anode currents from 1 to 7 kA, and a base operating pressure of 9 \times 10^-6 torr. The 3-D printed anodes demonstrated microwave performance comparable to the aluminum anode, generating microwave powers in excess of 150 MW, with an average instantaneous peak total efficiency of 27% ± 10%. After 100 shots on each structure, neither anode showed any signs of operationally induced damage. The anodes did, however, have a higher rate of postshot outgassing, emitting 32% and 23% more CO2 per shot, respectively. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THREE-dimensional printing KW - ADDITIVES KW - ANODES KW - METAL-filled plastics KW - MICROWAVE devices KW - PLASTICS KW - 3-D printing KW - additive manufacturing KW - anodes KW - Blades KW - Coatings KW - Copper KW - metallization KW - microwave devices KW - plastics KW - Thermal spraying N1 - Accession Number: 117416223; Jordan, Nicholas M. 1 Greening, Geoffrey B. 1 Hoff, Brad W. 2 Maestas, Sabrina S. 2 Exelby, Steven C. 1 Gilgenbach, Ronald M. 1; Affiliation: 1: University of Michigan, Ann Arbor, MI, USA 2: Air Force Research Laboratory, Kirtlan AFB, NM, USA; Source Info: Aug2016 Part 1, Vol. 44 Issue 8, p1258; Subject Term: THREE-dimensional printing; Subject Term: ADDITIVES; Subject Term: ANODES; Subject Term: METAL-filled plastics; Subject Term: MICROWAVE devices; Subject Term: PLASTICS; Author-Supplied Keyword: 3-D printing; Author-Supplied Keyword: additive manufacturing; Author-Supplied Keyword: anodes; Author-Supplied Keyword: Blades; Author-Supplied Keyword: Coatings; Author-Supplied Keyword: Copper; Author-Supplied Keyword: metallization; Author-Supplied Keyword: microwave devices; Author-Supplied Keyword: plastics; Author-Supplied Keyword: Thermal spraying; NAICS/Industry Codes: 424610 Plastics Materials and Basic Forms and Shapes Merchant Wholesalers; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 326199 All Other Plastics Product Manufacturing; NAICS/Industry Codes: 326198 All other plastic product manufacturing; NAICS/Industry Codes: 326121 Unlaminated Plastics Profile Shape Manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TPS.2016.2565261 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117416223&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hoff, Brad W. AU - French, David M. T1 - Particle-in-Cell Simulations of a Multiple Beam S-Band Disk-on-Rod TWT Amplifier. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2016/08//Aug2016 Part 1 VL - 44 IS - 8 M3 - Article SP - 1287 EP - 1290 SN - 00933813 AB - A high-power, pulsed operation, multibeam, S-band, coaxial disk-on-rod traveling-wave-tube amplifier has been simulated. In this paper, the amplifier, having an 81-period slow wave structure, utilized six 20-A beams. For 800 W input signals at frequencies between 2 to 4 GHz, gain and bandwidth values of 21.6 dB at 8% bandwidth and 15 dB at 15% bandwidth were observed for the beam voltages of 100 and 120 kV, respectively. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON beams KW - HIGH frequency amplifiers KW - RADIO frequency amplifiers KW - VIRTUAL prototypes KW - Bandwidth KW - Data models KW - Electron beams KW - Electron tubes KW - Gain KW - high power amplifiers KW - Power generation KW - Radio frequency KW - radiofrequency amplifiers KW - virtual prototyping N1 - Accession Number: 117416221; Hoff, Brad W. 1 French, David M. 1; Affiliation: 1: Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, NM, USA; Source Info: Aug2016 Part 1, Vol. 44 Issue 8, p1287; Subject Term: ELECTRON beams; Subject Term: HIGH frequency amplifiers; Subject Term: RADIO frequency amplifiers; Subject Term: VIRTUAL prototypes; Author-Supplied Keyword: Bandwidth; Author-Supplied Keyword: Data models; Author-Supplied Keyword: Electron beams; Author-Supplied Keyword: Electron tubes; Author-Supplied Keyword: Gain; Author-Supplied Keyword: high power amplifiers; Author-Supplied Keyword: Power generation; Author-Supplied Keyword: Radio frequency; Author-Supplied Keyword: radiofrequency amplifiers; Author-Supplied Keyword: virtual prototyping; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TPS.2016.2547344 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117416221&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hoff, Brad W. AU - French, David M. T1 - Simulations of a Disk-on-Rod TWT Driven by an NLTL-Modulated Electron Beam. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2016/08//Aug2016 Part 1 Y1 - 2016/08//Aug2016 Part 1 VL - 44 IS - 8 M3 - Article SP - 1265 EP - 1269 SN - 00933813 AB - Using measured waveforms from a synchronous-wave ferrite nonlinear transmission line (NLTL), particle-in-cell simulations demonstrate the potential to emit GW-class electron beams (hundreds of kilovolts, multiple kiloamperes) with current modulations as great as 30% of the average beam current, with modulations occurring at a peak frequency equal to that of the peak NLTL output frequency. The NLTL-modulated beam is then coupled to disk-on-rod slow wave structure (SWS) simulations in which it is shown that the extractable RF generated through interaction of the modulated beam with the SWS is up to ten times greater than that directly extractable from the NLTL itself. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON beams KW - UHF power amplifiers KW - MICROWAVE generation KW - UHF generation KW - SLOW wave structures N1 - Accession Number: 117416217; Source Information: Aug2016 Part 1, Vol. 44 Issue 8, p1265; Subject Term: ELECTRON beams; Subject Term: UHF power amplifiers; Subject Term: MICROWAVE generation; Subject Term: UHF generation; Subject Term: SLOW wave structures; Subject Term: ; Number of Pages: 5p; ; Document Type: Article; L3 - 10.1109/TPS.2016.2519407 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=117416217&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR T1 - If You Can't Pay Them, Play Them: Fan Preferences and Own-Race Bias in the WNBA. AU - Harris, Jill AU - Berri, David J. JO - International Journal of Sport Finance JF - International Journal of Sport Finance Y1 - 2016/08// VL - 11 IS - 3 SP - 247 EP - 261 SN - 15586235 N1 - Accession Number: 118177767; Author: Harris, Jill: 1 Author: Berri, David J.: 2 ; Author Affiliation: 1 United States Air Force Academy: 2 Southern Utah University; No. of Pages: 15; Language: English; Publication Type: Article; Update Code: 20160920 N2 - During the 2010–2014 seasons, non-white players with non-white coaches played 4.81 fewer minutes per game on average than white players in the WNBA. This difference in playing time is not due to player endowments. A control for the percentage of the white population suggests fan preferences could contribute to coaching decisions about playing time allocation. No evidence of own-race bias is found. As the first investigation into bias in the WNBA, this paper contributes to the growing literature on discrimination in professional sports. ABSTRACT FROM AUTHOR KW - *COACHES (Athletics) KW - *ATHLETES KW - *PROFESSIONAL sports KW - WOMEN'S National Basketball Association KW - TIME management KW - employer discrimination KW - racial bias KW - WNBA UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=118177767&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Huang, Yanshi AU - Wu, Qian AU - Huang, Cheryl Y. AU - Su, Yi-Jiun T1 - Thermosphere variation at different altitudes over the northern polar cap during magnetic storms. JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2016/08// VL - 146 M3 - Article SP - 140 EP - 148 SN - 13646826 AB - In this study, we report observations and simulation results of heated neutrals at various altitudes inside the polar cap during two magnetic storms in January 2005. The Poynting flux measurements from the Defense Meteorological Satellite Program (DMSP) satellites show enhanced energy input in the polar cap during the storm main phase, which is underestimated in the TIE-GCM simulation. Neutral temperature measurements at 250 km from the ground-based Fabry-Perot Interferometer (FPI) at Resolute Bay are presented, along with the neutral density observations at 360 km and 470 km from Challenging Minisatellite Payload (CHAMP) and the Gravity Recovery and Climate Experiment (GRACE) satellites, respectively. These data have been analyzed to demonstrate the altitudinal dependence of neutral response to the storm energy input. By comparing the TIE-GCM simulation results and the observations, we demonstrate that Poynting fluxes as well as the thermosphere response were underestimated in the model. The simulated neutral temperature at Resolute Bay increases by approximately 260° and 280° K for the two events, respectively, much lower than the observed temperature enhancements of 750° and 900° K. Neutral density enhancements with more than 30% increase over the background density were also observed at polar latitudes, with no clear distinction between the auroral zone and polar cap. All measurements indicate enhancements at high latitudes poleward of 80° magnetic latitude (MLAT) implying that substantial heating can occur within the polar cap during storms. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOSPHERE KW - METEOROLOGICAL observations KW - FABRY-Perot interferometers KW - CLIMATOLOGY KW - POYNTING theorem KW - DMSP KW - FPI at Resolute Bay KW - Neutral heating KW - Polar cap N1 - Accession Number: 116764693; Huang, Yanshi 1,2; Email Address: huangys@unm.edu Wu, Qian 3 Huang, Cheryl Y. 4 Su, Yi-Jiun 4; Affiliation: 1: Department of Electric and Computer Engineering, University of New Mexico, Albuquerque, New Mexico, USA 2: Configurable Space Microsystems Innovations & Applications Center, Albuquerque, New Mexico, USA 3: High Altitude Observatory, National Center for Atmospheric Research, Boulder, Colorado, USA 4: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico, USA; Source Info: Aug2016, Vol. 146, p140; Subject Term: THERMOSPHERE; Subject Term: METEOROLOGICAL observations; Subject Term: FABRY-Perot interferometers; Subject Term: CLIMATOLOGY; Subject Term: POYNTING theorem; Author-Supplied Keyword: DMSP; Author-Supplied Keyword: FPI at Resolute Bay; Author-Supplied Keyword: Neutral heating; Author-Supplied Keyword: Polar cap; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jastp.2016.06.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116764693&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Torres, David AU - Wang, Tongyu AU - Zhang, Jun AU - Zhang, Xiaoyang AU - Dooley, Sarah AU - Tan, Xiaobo AU - Xie, Huikai AU - Sepulveda, Nelson T1 - VO2-Based MEMS Mirrors. JO - Journal of Microelectromechanical Systems JF - Journal of Microelectromechanical Systems Y1 - 2016/08// VL - 25 IS - 4 M3 - Article SP - 780 EP - 787 SN - 10577157 AB - This paper reports the integration of vanadium dioxide (VO2) thin films in a microelectromechanical systems (MEMS) mirror device, where the actuation is mainly due to the solid-solid phase transition of VO2. The fabrication process described in this paper provides the details that will enable the integration of VO2 thin films at any step during the fabrication of rather complex MEMS devices. The present VO2-based MEMS mirror device is operated electro-thermally through integrated resistive heaters, and its behavior is characterized across the phase transition of VO2, which occurs at a temperature of ~68 °C and spans about 10 °C. The maximum vertical displacement of the mirror platform is 75 \mu \mathrm m and it occurs for an input voltage of 1.1 V. This translates to an average power consumption of 6.5 mW per mirror actuator and a total power consumption of 26.1 mW for the entire device. The studies included in this paper are key for future device improvements and further development of MEMS mirror actuation technology, which could include the use of the hysteresis of VO2 for programming tilting angles in MEMS mirrors. [2016-0016] [ABSTRACT FROM PUBLISHER] AB - Copyright of Journal of Microelectromechanical Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTROMECHANICAL systems KW - VANADIUM dioxide KW - THIN films -- Electric properties KW - PHASE change materials KW - ELECTRIC power consumption -- Mathematical models KW - Actuators KW - Fabrication KW - Metals KW - Microelectromechanical systems (MEMS)-mirrors KW - Micromechanical devices KW - Mirrors KW - phase-change materials KW - Resistance KW - Thermal expansion KW - vanadium dioxide N1 - Accession Number: 117145700; Torres, David 1 Wang, Tongyu 1 Zhang, Jun 2 Zhang, Xiaoyang 3 Dooley, Sarah 4 Tan, Xiaobo 1 Xie, Huikai 3 Sepulveda, Nelson 1; Affiliation: 1: Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI, USA 2: Department of Electrical and Computer Engineering, University of California at San Diego, La Jolla, CA, USA 3: Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL, USA 4: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Source Info: Aug2016, Vol. 25 Issue 4, p780; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: VANADIUM dioxide; Subject Term: THIN films -- Electric properties; Subject Term: PHASE change materials; Subject Term: ELECTRIC power consumption -- Mathematical models; Author-Supplied Keyword: Actuators; Author-Supplied Keyword: Fabrication; Author-Supplied Keyword: Metals; Author-Supplied Keyword: Microelectromechanical systems (MEMS)-mirrors; Author-Supplied Keyword: Micromechanical devices; Author-Supplied Keyword: Mirrors; Author-Supplied Keyword: phase-change materials; Author-Supplied Keyword: Resistance; Author-Supplied Keyword: Thermal expansion; Author-Supplied Keyword: vanadium dioxide; Number of Pages: 8p; Document Type: Article L3 - 10.1109/JMEMS.2016.2562609 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117145700&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cao, W. AU - Zhang, F. AU - Chen, S.-L. AU - Zhang, C. AU - Zhu, J. AU - Semiatin, S. AU - Tiley, J. T1 - Precipitation Modeling of Multi-Component Nickel-Based Alloys. JO - Journal of Phase Equilibria & Diffusion JF - Journal of Phase Equilibria & Diffusion Y1 - 2016/08// VL - 37 IS - 4 M3 - Article SP - 491 EP - 502 SN - 15477037 AB - Computer aided materials design is of increasingly importance and interest because the conventional approach solely relying on experimentation is no longer viable within the constraint of available resources. The CALPHAD approach, which emerged first as an approach for the calculation of phase equilibria and thermodynamic properties of complex multi-component, multi-phase systems, has in recent years been applied to a broader field of materials science and engineering beyond phase diagrams, such as solidification, coating, joining, and phase transformation. This approach, therefore, plays an important role in modern materials design in the framework of Integrated Computational Materials Engineering. In this study, we present a modeling approach that integrates thermodynamic calculation and kinetic simulation to simulate the precipitation kinetics of multi-component alloys. Its applications will be demonstrated by the studies of a number of nickel-based alloys. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Phase Equilibria & Diffusion is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALLOYS KW - COMPUTER-aided design KW - INFORMATION science KW - MATERIALS science KW - COMPUTER simulation KW - alloy design KW - integrated computational materials engineering KW - materials informatics KW - nickel-based alloys KW - precipitation modeling N1 - Accession Number: 117300307; Cao, W. 1 Zhang, F. 1; Email Address: Fan.Zhang@computherm.com Chen, S.-L. 1 Zhang, C. 1 Zhu, J. 1 Semiatin, S. 2 Tiley, J. 2; Affiliation: 1: CompuTherm LLC , 8401 Greenway Blvd., Suite 248 Middleton 53562 USA 2: Air Force Research Laboratory, Materials and Manufacturing Directory, AFRL/RXCM, Wright-Patterson Air Force Base , Dayton 45433 USA; Source Info: Aug2016, Vol. 37 Issue 4, p491; Subject Term: ALLOYS; Subject Term: COMPUTER-aided design; Subject Term: INFORMATION science; Subject Term: MATERIALS science; Subject Term: COMPUTER simulation; Author-Supplied Keyword: alloy design; Author-Supplied Keyword: integrated computational materials engineering; Author-Supplied Keyword: materials informatics; Author-Supplied Keyword: nickel-based alloys; Author-Supplied Keyword: precipitation modeling; NAICS/Industry Codes: 541512 Computer Systems Design Services; Number of Pages: 12p; Document Type: Article L3 - 10.1007/s11669-016-0481-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117300307&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wenndt, Stanley J. T1 - Human recognition of familiar voices. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2016/08// VL - 140 IS - 2 M3 - Article SP - 1172 EP - 1183 SN - 00014966 AB - Recognizing familiar voices is something we do every day. In quiet environments, it is usually easy to recognize a familiar voice. In noisier environments, this can become a difficult task. This paper examines how robust listeners are at identifying familiar voices in noisy, changing environments and what factors may affect their recognition rates. While there is previous research addressing familiar speaker recognition, the research is limited due to the difficulty in obtaining appropriate data that eliminates speaker dependent traits, such as word choice, along with having corresponding listeners who are familiar with the speakers. The data used in this study were collected in such a fashion to mimic conversational, free-flow dialogue, but in a way to eliminate many variables such as word choice, intonation, or non-verbal cues. These data provide some of the most realistic test scenarios to-date for familiar speaker identification. A pure-tone hearing test was used to separate listeners into normal hearing and hearing impaired groups. It is hypothesized that the results of the Normal Hearing Group will be statistically better. Additionally, the aspect of familiar speaker recognition is addressed by having each listener rate his or her familiarity with each speaker. Two statistical approaches showed that the more familiar a listener is with a speaker, the more likely the listener will recognize the speaker. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AUTOMATIC speech recognition KW - PATTERN recognition systems KW - PATTERN perception KW - CLASSIFICATION algorithms KW - COMPUTER vision N1 - Accession Number: 118037576; Wenndt, Stanley J. 1; Email Address: wenndts@gmail.com; Affiliation: 1: Air Force Research Laboratory, 525 Brooks Road, Rome, New York 13441, USA; Source Info: Aug2016, Vol. 140 Issue 2, p1172; Subject Term: AUTOMATIC speech recognition; Subject Term: PATTERN recognition systems; Subject Term: PATTERN perception; Subject Term: CLASSIFICATION algorithms; Subject Term: COMPUTER vision; Number of Pages: 12p; Document Type: Article L3 - 10.1121/1.4958682 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118037576&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Austin, Carlye A. AU - Hinkley, Georgia K. AU - Mishra, Anurag R. AU - Zhang, Qin AU - Umbreit, Thomas H. AU - Betz, Martha W. AU - E. Wildt, Bridget AU - Casey, Brendan J. AU - Francke-Carroll, Sabine AU - Hussain, Saber M. AU - Roberts, Stephen M. AU - Brown, Ken M. AU - Goering, Peter L. T1 - Distribution and accumulation of 10 nm silver nanoparticles in maternal tissues and visceral yolk sac of pregnant mice, and a potential effect on embryo growth. JO - Nanotoxicology JF - Nanotoxicology Y1 - 2016/08// VL - 10 IS - 6 M3 - Article SP - 654 EP - 661 SN - 17435390 AB - We examined the distribution of silver in pregnant mice and embryos/fetuses following intravenous injections of 10 nm silver nanoparticles (AgNPs) or soluble silver nitrate (AgNO3) at dose levels of 0 (citrate buffer control) or 66 µg Ag/mouse to pregnant mice on gestation days (GDs) 7, 8 and 9. Selected maternal tissues and all embryos/fetuses from control, AgNP- and AgNO3-treated groups on GD10 and control and AgNP-treated groups on GD16 were processed for the measurement of silver concentrations, intracellular AgNP localization, histopathology and gross examination of tissue morphology. Inductively-coupled plasma mass spectrometry revealed silver in all examined tissues following either AgNP or AgNO3treatment, with highest concentrations of silver in maternal liver, spleen and visceral yolk sac (VYS), and lowest concentrations in embryos/fetuses. For VYS, mean silver concentration following AgNO3treatment (4.87 ng Ag/mg tissue) was approximately two-fold that following AgNP treatment (2.31 ng Ag/mg tissue); for all other tissues examined, mean silver concentrations following either AgNP or AgNO3treatment were not significantly different from each other (e.g. 2.57 or 2.84 ng Ag/mg tissue in maternal liver and 1.61 or 2.50 ng Ag/mg tissue in maternal spleen following AgNP or AgNO3treatment, respectively). Hyperspectral imaging revealed AgNP aggregates in maternal liver, kidney, spleen and VYS from AgNP-treated mice, but not AgNO3-treated mice. Additionally, one or more embryos collected on GD10 from eight of ten AgNP-treated mice appeared small for their age (i.e. Theiler stage 13 [GD8.5] or younger). In the control group (N = 11), this effect was seen in embryos from only one mouse. In conclusion, intravenous injection of 10 nm AgNPs to pregnant mice resulted in notable silver accumulation in maternal liver, spleen and VYS, and may have affected embryonic growth. Silver accumulation in embryos/fetuses was negligible. [ABSTRACT FROM AUTHOR] AB - Copyright of Nanotoxicology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILVER nanoparticles KW - YOLK sac KW - MICE as laboratory animals KW - PREGNANCY in mammals KW - EMBRYOS -- Physiology KW - Development KW - fetus KW - nanoparticles KW - nanosilver KW - pregnancy KW - toxicity N1 - Accession Number: 118223867; Austin, Carlye A. 1 Hinkley, Georgia K. 2 Mishra, Anurag R. 3 Zhang, Qin 3 Umbreit, Thomas H. 3 Betz, Martha W. 3 E. Wildt, Bridget 3 Casey, Brendan J. 3 Francke-Carroll, Sabine 4 Hussain, Saber M. 5 Roberts, Stephen M. 2 Brown, Ken M. 1 Goering, Peter L. 3; Affiliation: 1: Department of Biological Sciences, George Washington University, Washington, DC, USA, 2: Center for Environmental and Human Toxicology, University of Florida, Gainesville, FL, USA, 3: Center for Devices and Radiological Health, US Food and Drug Administration, Silver Spring, MD, USA, 4: Center for Food Safety and Nutrition, US Food and Drug Administration, College Park, MD, USA, and 5: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, USA; Source Info: Aug2016, Vol. 10 Issue 6, p654; Subject Term: SILVER nanoparticles; Subject Term: YOLK sac; Subject Term: MICE as laboratory animals; Subject Term: PREGNANCY in mammals; Subject Term: EMBRYOS -- Physiology; Author-Supplied Keyword: Development; Author-Supplied Keyword: fetus; Author-Supplied Keyword: nanoparticles; Author-Supplied Keyword: nanosilver; Author-Supplied Keyword: pregnancy; Author-Supplied Keyword: toxicity; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 8p; Document Type: Article L3 - 10.3109/17435390.2015.1107143 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118223867&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Steele, Logan AU - Johnson, James AU - Watts, Logan AU - MacDougall, Alexandra AU - Mumford, Michael AU - Connelly, Shane AU - Lee Williams, T. T1 - A Comparison of the Effects of Ethics Training on International and US Students. JO - Science & Engineering Ethics JF - Science & Engineering Ethics Y1 - 2016/08// VL - 22 IS - 4 M3 - Article SP - 1217 EP - 1244 SN - 13533452 AB - As scientific and engineering efforts become increasingly global in nature, the need to understand differences in perceptions of research ethics issues across countries and cultures is imperative. However, investigations into the connection between nationality and ethical decision-making in the sciences have largely generated mixed results. In Study 1 of this paper, a measure of biases and compensatory strategies that could influence ethical decisions was administered. Results from this study indicated that graduate students from the United States and international graduate students studying in the US are prone to different biases. Based on these findings, recommendations are made for developing ethics education interventions to target these decision-making biases. In Study 2, we employed an ethics training intervention based on ethical sensemaking and used a well-established measure of ethical decision-making that more fully captures the content of ethical judgment. Similar to Study 1, the results obtained in this study suggest differences do exist between graduate students from the US and international graduate students in ethical decision-making prior to taking the research ethics training. However, similar effects were observed for both groups following the completion of the ethics training intervention. [ABSTRACT FROM AUTHOR] AB - Copyright of Science & Engineering Ethics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH -- Moral & ethical aspects KW - DECISION making KW - GRADUATE students -- United States KW - FALSIFICATION of data KW - JUDGMENT (Ethics) KW - Ethical decision-making KW - Ethics training KW - Moral judgment KW - Nationality KW - RCR N1 - Accession Number: 117649494; Steele, Logan 1; Email Address: lmsteele@ou.edu Johnson, James 2; Email Address: jamesfjohn@gmail.com Watts, Logan 1; Email Address: logan.l.watts@ou.edu MacDougall, Alexandra 3; Email Address: macdo3ae@cmich.edu Mumford, Michael 1; Email Address: mmumford@ou.edu Connelly, Shane 1; Email Address: sconnelly@ou.edu Lee Williams, T. 4; Email Address: lwilliams@ou.edu; Affiliation: 1: Department of Psychology, Center for Applied Social Research , University of Oklahoma , 5 Partners Place, 201 Stephenson Pkwy, Suite 4100 Norman 73072 USA 2: Strategic Research and Assessment Branch , United States Air Force , Norman USA 3: Department of Management, College of Business Administration , Central Michigan University , 200 Smith Hall Mount Pleasant 48859 USA 4: Graduate College , University of Oklahoma , Robertson Hall, 731 Elm Ave. Norman 73019 USA; Source Info: Aug2016, Vol. 22 Issue 4, p1217; Subject Term: RESEARCH -- Moral & ethical aspects; Subject Term: DECISION making; Subject Term: GRADUATE students -- United States; Subject Term: FALSIFICATION of data; Subject Term: JUDGMENT (Ethics); Author-Supplied Keyword: Ethical decision-making; Author-Supplied Keyword: Ethics training; Author-Supplied Keyword: Moral judgment; Author-Supplied Keyword: Nationality; Author-Supplied Keyword: RCR; Number of Pages: 28p; Document Type: Article L3 - 10.1007/s11948-015-9678-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117649494&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jensen, J.K. AU - Welk, B.A. AU - Williams, R.E.A. AU - Sosa, J.M. AU - Huber, D.E. AU - Senkov, O.N. AU - Viswanathan, G.B. AU - Fraser, H.L. T1 - Characterization of the microstructure of the compositionally complex alloy Al1Mo0.5Nb1Ta0.5Ti1Zr1. JO - Scripta Materialia JF - Scripta Materialia Y1 - 2016/08// VL - 121 M3 - Article SP - 1 EP - 4 SN - 13596462 AB - Electron microscopy, X-ray energy dispersive spectroscopy, and tomographic reconstructions were used to characterize a high entropy alloy predominantly composed of refractory elements. The intragranular microstructure was found to consist of a periodic two phase mixture, where a disordered bcc phase is aligned orthogonally in an ordered B2 phase. The phases were found to exhibit continuous lattice registry and an orientation relationship given by < 100 > bcc //<100 > B2 , {001} bcc //{001} B2 . X-ray energy dispersive spectroscopy was used to determine the compositions of the phases, and spectral images were used in the tomographic reconstruction of the alloy to reveal the morphology and the elemental partitioning between phases. [ABSTRACT FROM AUTHOR] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - ELECTRON microscopy KW - ENERGY dispersive X-ray spectroscopy KW - COMPOSITE materials KW - ENTROPY KW - HIGH resolution electron microscopy KW - Electron tomography KW - High entropy alloys KW - High resolution electron microscopy KW - Ordered compounds KW - Phase transformations N1 - Accession Number: 115977331; Jensen, J.K. 1 Welk, B.A. 1 Williams, R.E.A. 2 Sosa, J.M. 1 Huber, D.E. 1,2 Senkov, O.N. 3 Viswanathan, G.B. 1 Fraser, H.L. 1; Email Address: fraser.3@osu.edu; Affiliation: 1: Center for the Accelerated Maturation of Materials, Department of Materials Science and Engineering, The Ohio State University, 1305 Kinnear Rd., Columbus, OH 43212, USA 2: Center for Electron Microscopy and Analysis, Department of Materials Science and Engineering, The Ohio State University, 1305 Kinnear Rd., Columbus, OH 43212, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Aug2016, Vol. 121, p1; Subject Term: MICROSTRUCTURE; Subject Term: ELECTRON microscopy; Subject Term: ENERGY dispersive X-ray spectroscopy; Subject Term: COMPOSITE materials; Subject Term: ENTROPY; Subject Term: HIGH resolution electron microscopy; Author-Supplied Keyword: Electron tomography; Author-Supplied Keyword: High entropy alloys; Author-Supplied Keyword: High resolution electron microscopy; Author-Supplied Keyword: Ordered compounds; Author-Supplied Keyword: Phase transformations; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2016.04.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115977331&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kahler, S. AU - Arge, C. AU - Smith, D. T1 - Using the WSA Model to Test the Parker Spiral Approximation for SEP Event Magnetic Connections. JO - Solar Physics JF - Solar Physics Y1 - 2016/08// VL - 291 IS - 6 M3 - Article SP - 1829 EP - 1852 SN - 00380938 AB - In studies of solar energetic ( $E > 10~\mbox{MeV}$) particle (SEP) events the Parker spiral (PS) field approximation, based only on the measured 1 AU solar wind (SW) speed $V$sw, is nearly always used to determine the coronal or photospheric source locations of the 1 AU magnetic fields. There is no objective way to validate that approximation, but here we seek guidelines for optimizing its application. We first review recent SEP studies showing the extensive use of the PS approximation with various assumptions about coronal and photospheric source fields. We then run the Wang-Sheeley-Arge (WSA) model over selected Carrington rotations (CRs) to track both the photospheric and $5~\mbox{R}_{\odot}$ source locations of the forecasted 1 AU SW, allowing us to compare those WSA sources with the PS sources inferred from the WSA $V$sw forecast. We compile statistics of the longitude differences (WSA-PS) for all the CRs and discuss the limitations of using the WSA model to validate the PS approximation. Over nearly all of each CR the PS and WSA source longitudes agree to within several degrees. The agreement is poor only in the slow-fast SW interaction regions characterized by high-speed events (HSEs), where the longitude differences can reach several tens of degrees. This result implies that SEP studies should limit use of the PS approximation around HSEs and use magnetic field polarities as an additional check of solar source connections. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOMATOSENSORY evoked potentials KW - SOLAR energetic particles KW - SOLAR wind spectrometer KW - SOLAR granulation KW - SUN -- Loop prominences KW - Acceleration, magnetic fields KW - Energetic particles KW - Low coronal signatures KW - Models, coronal mass ejections N1 - Accession Number: 117124912; Kahler, S. 1; Email Address: stephen.kahler@kirtland.af.mil Arge, C. 1; Email Address: nick.arge@kirtland.af.mil Smith, D. 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Ave. Kirtland AFB 87117 USA 2: Utah State University, Logan 84322 USA; Source Info: Aug2016, Vol. 291 Issue 6, p1829; Subject Term: SOMATOSENSORY evoked potentials; Subject Term: SOLAR energetic particles; Subject Term: SOLAR wind spectrometer; Subject Term: SOLAR granulation; Subject Term: SUN -- Loop prominences; Author-Supplied Keyword: Acceleration, magnetic fields; Author-Supplied Keyword: Energetic particles; Author-Supplied Keyword: Low coronal signatures; Author-Supplied Keyword: Models, coronal mass ejections; Number of Pages: 24p; Document Type: Article L3 - 10.1007/s11207-016-0934-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117124912&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hause, Michael L. AU - Prince, Benjamin D. AU - Bemish, Raymond J. T1 - Integral cross section measurements and product recoil velocity distributions of Xe2+ + N2 hyperthermal charge-transfer collisions. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2016/07/28/ VL - 145 IS - 4 M3 - Article SP - 1 EP - 10 SN - 00219606 AB - Charge exchange from doubly charged rare gas cations to simple diatomics proceeds with a large cross section and results in populations of many vibrational and electronic product states. The charge exchange between Xe2+ and N2, in particular, is known to create N+2 in both the A and B electronic states. In this work, we present integral charge exchange cross section measurements of the Xe2+ + N2 reaction as well as axial recoil velocity distributions of the Xe+ and N+2 product ions for collision energies between 0.3 and 100 eV in the center-of-mass (COM) frame. Total charge-exchange cross sections decrease from 70 Ų to about 40 Ų with increasing collision energy through this range. Analysis of the axial velocity distributions indicates that a Xe2+ - N2 complex exists at low collision energies but is absent by 17.6 eV COM. Analysis of the axial velocity distributions reveals evidence for complexes with lifetimes comparable to the rotational period at low collision energies. The velocity distributions are consistent with quasi-resonant single charge transfer at high collision energies. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CROSS sections (Nuclear physics) KW - VELOCITY distribution (Statistical mechanics) KW - CHARGE-transfer transitions KW - CHARGE exchange KW - COLLISION integrals N1 - Accession Number: 117149666; Hause, Michael L. 1 Prince, Benjamin D. 2 Bemish, Raymond J. 2; Affiliation: 1: Institute for Scientific Research, Boston College, Chestnut Hill, Massachusetts 02159, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117, USA; Source Info: 2016, Vol. 145 Issue 4, p1; Subject Term: CROSS sections (Nuclear physics); Subject Term: VELOCITY distribution (Statistical mechanics); Subject Term: CHARGE-transfer transitions; Subject Term: CHARGE exchange; Subject Term: COLLISION integrals; Number of Pages: 10p; Illustrations: 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1063/1.4959135 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117149666&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2016-37352-001 AN - 2016-37352-001 AU - Gunzelmann, Glenn AU - Lyon, Don R. T1 - Constructing representations of spatial location from briefly presented displays. JF - Cognitive Processing JO - Cognitive Processing JA - Cogn Process Y1 - 2016/07/27/ CY - Germany PB - Springer SN - 1612-4782 SN - 1612-4790 AD - Gunzelmann, Glenn, Air Force Research Laboratory, Cognitive Models and Agents Branch, Wright Patterson AFB, 2620 Q St. – Building 852, Dayton, OH, US, 45433 N1 - Accession Number: 2016-37352-001. Partial author list: First Author & Affiliation: Gunzelmann, Glenn; Air Force Research Laboratory, Cognitive Models and Agents Branch, Wright Patterson AFB, Dayton, OH, US. Release Date: 20160808. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Language: English. Major Descriptor: No terms assigned. Classification: Intelligent Systems (4100). Publication History: Accepted Date: Jul 12, 2016; First Submitted Date: Aug 17, 2015. Copyright Statement: Marta Olivetti Belardinelli and Springer-Verlag Berlin Heidelberg (outside the USA). 2016. AB - Spatial memory and reasoning rely heavily on allocentric (often map-like) representations of spatial knowledge. While research has documented many ways in which spatial information can be represented in allocentric form, less is known about how such representations are constructed. For example: Are the very early, pre-attentive parts of the process hard-wired, or can they be altered by experience? We addressed this issue by presenting sub-saccadic (53 ms) masked stimuli consisting of a target among one to three reference features. We then shifted the location of the feature array, and asked participants to identify the target’s new relative location. Experience altered feature processing even when the display duration was too short to allow attention re-allocation. The results demonstrate the importance of early perceptual processes in the creation of representations of spatial location, and the malleability of those processes based on experience and expectations. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Spatial attention KW - Frame of reference KW - Spatial encoding KW - Spatial cognition KW - Learning KW - 2016 KW - No terms assigned KW - 2016 DO - 10.1007/s10339-016-0775-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-37352-001&site=ehost-live&scope=site UR - glenn.gunzelmann@us.af.mil DP - EBSCOhost DB - psyh ER - TY - CONF AU - Nĕmeček, Zdenek AU - Shea, M.A. T1 - Preface: Plasma transport across magnetospheric boundaries. JO - Advances in Space Research JF - Advances in Space Research Y1 - 2016/07/15/ VL - 58 IS - 2 M3 - Proceeding SP - 155 EP - 156 SN - 02731177 KW - MAGNETOSPHERIC boundary layer KW - PLASMA transport processes N1 - Accession Number: 115885777; Nĕmeček, Zdenek 1,2,3; Email Address: zdenek.nemecek@mff.cuni.cz Shea, M.A. 1,2,3; Email Address: sssrc@msn.com; Affiliation: 1: Charles University, Faculty of Mathematics and Physics, V Holesovickach 2, 180 00 Prague, Czech Republic 2: Air Force Research Laboratory (Retired), Bedford, MA, USA 3: SSSRC, Nashua, NH, USA; Source Info: Jul2016, Vol. 58 Issue 2, p155; Subject Term: MAGNETOSPHERIC boundary layer; Subject Term: PLASMA transport processes; Number of Pages: 2p; Document Type: Proceeding L3 - 10.1016/j.asr.2016.05.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115885777&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Oganesov, Armen AU - Vahala, George AU - Vahala, Linda AU - Yepez, Jeffrey AU - Soe, Min T1 - Benchmarking the Dirac-generated unitary lattice qubit collision-stream algorithm for 1D vector Manakov soliton collisions. JO - Computers & Mathematics with Applications JF - Computers & Mathematics with Applications Y1 - 2016/07/15/ VL - 72 IS - 2 M3 - Article SP - 386 EP - 393 SN - 08981221 AB - The unitary quantum lattice gas (QLG) algorithm is a mesoscopic unitary perturbative representation that can model the mean field Gross Pitaevskii equation for the evolution of the ground state wave function of Bose Einstein Condensates (BECs). The QLG considered here consists of an interleaved sequence of unitary collide-stream operators, with the collision operator being deduced from that for the Dirac equation, with the nonlinear potentials of the BECs being the mass term in the Dirac equation. Since the unitary collision operator is more accurate one obtains a more accurate representation of the nonlinear terms. Further benchmark QLG simulations are reported here: that for the exactly soluble 1D vector Manakov soliton collisions. It is found that this Dirac-based unitary algorithm permits simulations with vector soliton parameters (soliton amplitudes and speeds) that are considerably greater than those achieved under our previous swap QLG algorithm. [ABSTRACT FROM AUTHOR] AB - Copyright of Computers & Mathematics with Applications is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIRAC equation KW - UNITARY operators KW - QUBITS KW - LATTICE gas KW - SOLITON collisions KW - QUANTUM gases KW - BOSE-Einstein condensation KW - 1D Manakov solitons KW - Qubits KW - Unitary quantum lattice gas N1 - Accession Number: 115978707; Oganesov, Armen 1 Vahala, George 1; Email Address: gvahala@gmail.com Vahala, Linda 2 Yepez, Jeffrey 3,4 Soe, Min 5; Affiliation: 1: Department of Physics, William & Mary, Williamsburg, VA 23185, United States 2: Department of Electrical & Computer Engineering, Old Dominion University, Norfolk, VA 23529, United States 3: Air Force Research Laboratory/Directed Energy, Air Force Maui Optical & Supercomputing Observatory, Kihei, HI 96753, United States 4: Department of Physics and Astronomy, University of Hawai‘i at Manoa Watanabe Hall, 2505 Correa Road, Honolulu, HI 96822, United States 5: Department of Mathematics and Physical Sciences, Rogers State University, Claremore, OK 74017, United States; Source Info: Jul2016, Vol. 72 Issue 2, p386; Subject Term: DIRAC equation; Subject Term: UNITARY operators; Subject Term: QUBITS; Subject Term: LATTICE gas; Subject Term: SOLITON collisions; Subject Term: QUANTUM gases; Subject Term: BOSE-Einstein condensation; Author-Supplied Keyword: 1D Manakov solitons; Author-Supplied Keyword: Qubits; Author-Supplied Keyword: Unitary quantum lattice gas; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.camwa.2015.06.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115978707&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Juul, Nicolai Ytterdal AU - Winther, Grethe AU - Dale, Darren AU - Koker, Margaret K.A. AU - Shade, Paul AU - Oddershede, Jette T1 - Elastic interaction between twins during tensile deformation of austenitic stainless steel. JO - Scripta Materialia JF - Scripta Materialia Y1 - 2016/07/15/ VL - 120 M3 - Article SP - 1 EP - 4 SN - 13596462 AB - In austenite, the twin boundary normal is a common elastically stiff direction shared by the two twins, which may induce special interactions. By means of three-dimensional X-ray diffraction this elastic interaction has been analysed and compared to grains separated by conventional grain boundaries. However, the components of the Type II stress normal to the twin boundary plane exhibit the same large variations as for the grain boundaries. Elastic grain interactions are therefore complex and must involve the entire set of neighbouring grains. The elastic-regime stress along the tensile direction qualitatively depends on the grain orientation, but grain-to-grain variations are large. [ABSTRACT FROM AUTHOR] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AUSTENITIC stainless steel KW - DEFORMATIONS (Mechanics) KW - ELASTICITY KW - TWIN boundaries KW - TENSILE strength KW - GRAIN orientation (Materials) KW - X-ray diffraction KW - Austenitic steels KW - Elastic behaviour KW - Tension test KW - Three-dimensional X-ray diffraction (3DXRD) KW - Twinning N1 - Accession Number: 115366171; Juul, Nicolai Ytterdal 1 Winther, Grethe 1 Dale, Darren 2 Koker, Margaret K.A. 2 Shade, Paul 3 Oddershede, Jette 4; Email Address: jeto@fysik.dtu.dk; Affiliation: 1: Department of Mechanical Engineering, Technical University of Denmark, Produktionstorvet, 2800 Kgs. Lyngby, Denmark 2: Cornell High Energy Synchrotron Source, Ithaca, NY 14853, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 4: Department of Physics, Technical University of Denmark, Fysikvej, 2800 Kgs. Lyngby, Denmark; Source Info: Jul2016, Vol. 120, p1; Subject Term: AUSTENITIC stainless steel; Subject Term: DEFORMATIONS (Mechanics); Subject Term: ELASTICITY; Subject Term: TWIN boundaries; Subject Term: TENSILE strength; Subject Term: GRAIN orientation (Materials); Subject Term: X-ray diffraction; Author-Supplied Keyword: Austenitic steels; Author-Supplied Keyword: Elastic behaviour; Author-Supplied Keyword: Tension test; Author-Supplied Keyword: Three-dimensional X-ray diffraction (3DXRD); Author-Supplied Keyword: Twinning; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2016.03.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115366171&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Byrd, Jason N. AU - Lutz, Jesse J. AU - Yifan Jin AU - Ranasinghe, Duminda S. AU - Montgomery Jr., John A. AU - Perera, Ajith AU - Duan, Xiaofeng F. AU - Burggraf, Larry W. AU - Sanders, Beverly A. AU - Bartlett, Rodney J. T1 - Predictive coupled-cluster isomer orderings for some SinCm (m, n ≤ 12) clusters: A pragmatic comparison between DFT and complete basis limit coupled-cluster benchmarks. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2016/07/14/ VL - 145 IS - 2 M3 - Article SP - 1 EP - 12 SN - 00219606 AB - The accurate determination of the preferred Si12C12 isomer is important to guide experimental efforts directed towards synthesizing SiC nano-wires and related polymer structures which are anticipated to be highly efficient exciton materials for the opto-electronic devices. In order to definitively identify preferred isomeric structures for silicon carbon nano-clusters, highly accurate geometries, energies, and harmonic zero point energies have been computed using coupled-cluster theory with systematic extrapolation to the complete basis limit for set of silicon carbon clusters ranging in size from SiC3 to Si12C12. It is found that post-MBPT(2) correlation energy plays a significant role in obtaining converged relative isomer energies, suggesting that predictions using low rung density functional methods will not have adequate accuracy. Utilizing the best composite coupled-cluster energy that is still computationally feasible, entailing a 3-4 SCF and coupled-cluster theory with singles and doubles extrapolation with triple-ζ (T) correlation, the closo Si12C12 isomer is identified to be the preferred isomer in the support of previous calculations [X. F. Duan and L. W. Burggraf, J. Chem. Phys. 142, 034303 (2015)]. Additionally we have investigated more pragmatic approaches to obtaining accurate silicon carbide isomer energies, including the use of frozen natural orbital coupled-cluster theory and several rungs of standard and double-hybrid density functional theory. Frozen natural orbitals as a way to compute post-MBPT(2) correlation energy are found to be an excellent balance between efficiency and accuracy. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ISOMERS KW - COUPLED-cluster theory KW - SILICON compounds KW - POLYMERS KW - DENSITY functional theory KW - CARBON N1 - Accession Number: 116895224; Byrd, Jason N. 1,2; Email Address: byrd.jason@ensco.com Lutz, Jesse J. 1; Email Address: jesse.lutz.ctr@afit.edu Yifan Jin 1 Ranasinghe, Duminda S. 1 Montgomery Jr., John A. 3 Perera, Ajith 1 Duan, Xiaofeng F. 4,5 Burggraf, Larry W. 4 Sanders, Beverly A. 1,6 Bartlett, Rodney J. 1; Email Address: rodbartl@ufl.edu; Affiliation: 1: Quantum Theory Project, University of Florida, Gainesville, Florida 32611, USA 2: ENSCO, Inc., 4849 North Wickham Road, Melbourne, Florida 32940, USA 3: Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA 4: Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433, USA 5: Air Force Research Laboratory DoD Supercomputing Resource Center, Wright-Patterson Air Force Base, Ohio 45433, USA 6: Department of Computer and Information Science and Engineering, University of Florida, Gainesville, Florida 32611, USA; Source Info: 2016, Vol. 145 Issue 2, p1; Subject Term: ISOMERS; Subject Term: COUPLED-cluster theory; Subject Term: SILICON compounds; Subject Term: POLYMERS; Subject Term: DENSITY functional theory; Subject Term: CARBON; Number of Pages: 12p; Illustrations: 3 Diagrams, 9 Charts, 1 Graph; Document Type: Article L3 - 10.1063/1.4955196 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116895224&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ard, Shaun G. AU - Johnson, Ryan S. AU - Martinez, Jr., Oscar AU - Shuman, Nicholas S. AU - Hua Guo AU - Troe, Jürgen AU - Viggiano, Albert T1 - Analysis of the Pressure and Temperature Dependence of the Complex-Forming Bimolecular Reaction CH3OCH3 + Fe+. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2016/07/14/ VL - 120 IS - 27 M3 - Article SP - 5264 EP - 5273 SN - 10895639 AB - The kinetics of the reaction CH3OCH3 + Fe+ has been studied between 250 and 600 K in the buffer gas He at pressures between 0.4 and 1.6 Torr. Total rate constants and branching ratios for the formation of Fe+O(CH3)2 adducts and of Fe+OCH2 + CH4 products were determined. Quantum-chemical calculations provided the parameters required for an analysis in terms of statistical unimolecular rate theory. The analysis employed a recently developed simplified representation of the rates of complex-forming bimolecular reactions, separating association and chemical activation contributions. Satisfactory agreement between experimental results and kinetic modeling was obtained that allows for an extrapolation of the data over wide ranges of conditions. Possible reaction pathways with or without spin-inversion are discussed in relation to the kinetic modeling results. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UNIMOLECULAR reactions KW - CHEMICAL reactions KW - ACTIVATION (Chemistry) KW - BIMOLECULAR collisions KW - MINIMUM energy reaction path N1 - Accession Number: 116855953; Ard, Shaun G. 1 Johnson, Ryan S. 2 Martinez, Jr., Oscar 1 Shuman, Nicholas S. 1 Hua Guo 2 Troe, Jürgen 3,4; Email Address: shoff@gwdg.de Viggiano, Albert 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117-57776, United States 2: Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States 3: Max-Planck-Institut für Biophysikalische Chemie, Am Fassberg 11, D-37077 Göttingen, Germany 4: Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany; Source Info: Jul2016, Vol. 120 Issue 27, p5264; Subject Term: UNIMOLECULAR reactions; Subject Term: CHEMICAL reactions; Subject Term: ACTIVATION (Chemistry); Subject Term: BIMOLECULAR collisions; Subject Term: MINIMUM energy reaction path; Number of Pages: 10p; Document Type: Article L3 - 10.1021/acs.jpca.6b01125 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116855953&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ariyawansa, Gamini AU - Reyner, Charles J. AU - Duran, Joshua M. AU - Reding, Joshua D. AU - Scheihing, John E. AU - Steenbergen, Elizabeth H. T1 - Unipolar infrared detectors based on InGaAs/InAsSb ternary superlattices. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2016/07/11/ VL - 109 IS - 2 M3 - Article SP - 021112-1 EP - 021112-5 SN - 00036951 AB - Growth and characteristics of mid-wave infrared (MWIR) InGaAs/InAsSb strained layer superlattice (SLS) detectors are reported. InGaAs/InAsSb SLSs, identified as ternary SLSs, not only provide an extra degree of freedom for superlattice strain compensation but also show enhanced absorption properties compared to InAs/InAsSb SLSs. Utilizing In1-yGayAs/InAs0.65Sb0.35 ternary SLSs (y=0, 5, 10, and 20%) designed to have the same bandgap, a set of four unipolar detectors are investigated. These demonstrate an enhancement in the detector quantum efficiency due to the increased absorption coefficient. The detectors exhibit dark current performance within a factor of 10 of Rule 07 at temperatures above 120 K, and external quantum efficiencies in the 15%-25% range. This work demonstrates ternary SLSs are a potential absorber material for future high performance MWIR detectors. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFRARED detectors KW - INDIUM gallium arsenide KW - SUPERLATTICES KW - INDIUM arsenide KW - COEFFICIENTS (Statistics) N1 - Accession Number: 116849919; Ariyawansa, Gamini 1; Email Address: gamini.ariyawansa.2@us.af.mil Reyner, Charles J. 1 Duran, Joshua M. 1 Reding, Joshua D. 1 Scheihing, John E. 1 Steenbergen, Elizabeth H. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117, USA; Source Info: 2016, Vol. 109 Issue 2, p021112-1; Subject Term: INFRARED detectors; Subject Term: INDIUM gallium arsenide; Subject Term: SUPERLATTICES; Subject Term: INDIUM arsenide; Subject Term: COEFFICIENTS (Statistics); Number of Pages: 5p; Illustrations: 1 Diagram, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.4958854 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116849919&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wiebe, R. AU - Spottswood, S.M. T1 - On the dimension of complex responses in nonlinear structural vibrations. JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2016/07/07/ VL - 373 M3 - Article SP - 192 EP - 204 SN - 0022460X AB - The ability to accurately model engineering systems under extreme dynamic loads would prove a major breakthrough in many aspects of aerospace, mechanical, and civil engineering. Extreme loads frequently induce both nonlinearities and coupling which increase the complexity of the response and the computational cost of finite element models. Dimension reduction has recently gained traction and promises the ability to distill dynamic responses down to a minimal dimension without sacrificing accuracy. In this context, the dimensionality of a response is related to the number of modes needed in a reduced order model to accurately simulate the response. Thus, an important step is characterizing the dimensionality of complex nonlinear responses of structures. In this work, the dimensionality of the nonlinear response of a post-buckled beam is investigated. Significant detail is dedicated to carefully introducing the experiment, the verification of a finite element model, and the dimensionality estimation algorithm as it is hoped that this system may help serve as a benchmark test case. It is shown that with minor modifications, the method of false nearest neighbors can quantitatively distinguish between the response dimension of various snap-through, non-snap-through, random, and deterministic loads. The state-space dimension of the nonlinear system in question increased from 2–to–10 as the system response moved from simple, low-level harmonic to chaotic snap-through. Beyond the problem studied herein, the techniques developed will serve as a prescriptive guide in developing fast and accurate dimensionally reduced models of nonlinear systems, and eventually as a tool for adaptive dimension-reduction in numerical modeling. The results are especially relevant in the aerospace industry for the design of thin structures such as beams, panels, and shells, which are all capable of spatio-temporally complex dynamic responses that are difficult and computationally expensive to model. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRUCTURAL dynamics KW - DYNAMIC loads (Mechanics) KW - TECHNOLOGICAL innovations KW - TECHNOLOGICAL complexity KW - FINITE element method KW - ALGORITHMS -- Evaluation KW - BENCHMARK testing (Engineering) KW - Experimental Dynamics KW - Nonlinear dynamics KW - Reduced order modeling KW - Response dimension KW - Structural dynamics N1 - Accession Number: 114629680; Wiebe, R. 1; Email Address: rwiebe@uw.edu Spottswood, S.M. 2; Affiliation: 1: College of Engineering, University of Washington, 201 More Hall, Box 352700, Seattle, WA 98195, United States 2: Structural Sciences Center, Air Force Research Laboratory, 2790 D. Street, Wright-Patterson AFB, OH 45432, United States; Source Info: Jul2016, Vol. 373, p192; Subject Term: STRUCTURAL dynamics; Subject Term: DYNAMIC loads (Mechanics); Subject Term: TECHNOLOGICAL innovations; Subject Term: TECHNOLOGICAL complexity; Subject Term: FINITE element method; Subject Term: ALGORITHMS -- Evaluation; Subject Term: BENCHMARK testing (Engineering); Author-Supplied Keyword: Experimental Dynamics; Author-Supplied Keyword: Nonlinear dynamics; Author-Supplied Keyword: Reduced order modeling; Author-Supplied Keyword: Response dimension; Author-Supplied Keyword: Structural dynamics; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.jsv.2016.03.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114629680&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guenthner, Andrew J. AU - Ramirez, Sean M. AU - Ford, Michael D. AU - Soto, Denisse AU - Boatz, Jerry A. AU - Ghiassi, Kamran B. AU - Mabry, Joseph M. T1 - Organic Crystal Engineering of Thermosetting Cyanate Ester Monomers: Influence of Structure on Melting Point. JO - Crystal Growth & Design JF - Crystal Growth & Design Y1 - 2016/07/06/ VL - 16 IS - 7 M3 - Article SP - 4082 EP - 4093 SN - 15287483 AB - Key principles needed for the rational design of thermosetting monomer crystals, in order to control the melting point, have been elucidated using both theoretical and experimental investigations of cyanate esters. A determination of the thermodynamic properties associated with melting showed that the substitution of silicon for the central quaternary carbon in the di(cyanate ester), 2,2-bis(4-cyanatophenyl)propane, resulted in an increase in the entropy of melting along with a decrease in the enthalpy of melting, leading to a decrease in the melting temperature of 21.8 ± 0.2 K. In contrast, the analogous silicon substitution in the tri(cyanate ester), 1,1,1-tris(4-cyanatophenyl)ethane, resulted in no significant changes to the enthalpy and entropy of melting, accompanied by a small increase of 1.5 ± 0.3 K in the melting point. The crystal structure of 1,1,1-tris(4-cyanatophenyl)ethane was determined via single crystal X-ray diffraction, and the structures of these four di(cyanate esters) and tri(cyanate esters) were examined. Although both the empirical models of Lian and Yalkowsky, as well as Chickos and Acree, provided reasonable estimates of the entropy of melting of 2,2-bis(4-cyanatophenyl)propane, they successfully predicted only certain effects of silicon substitution and did not capture the difference in behavior between the di(cyanate esters) and the tri(cyanate esters). Semiempirical molecular modeling, however, helped to validate an explanation of the mechanism for the increase in the entropy of melting of the silicon-containing di(cyanate ester), while providing insight into the reason for the difference in behavior between the di(cyanate esters) and tri(cyanate esters). Taken together, the results assist in understanding how freedom of molecular motions in the liquid state may control the entropy of melting and can be utilized to guide the development of compounds with optimal melting characteristics for high-performance applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Crystal Growth & Design is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOSETTING composites KW - CYANATES KW - ESTERS KW - MONOMERS KW - MELTING points N1 - Accession Number: 116697933; Guenthner, Andrew J. 1; Email Address: andrew.guenthner@us.af.mil Ramirez, Sean M. 2 Ford, Michael D. 2 Soto, Denisse 3 Boatz, Jerry A. 1 Ghiassi, Kamran B. 1 Mabry, Joseph M. 1; Affiliation: 1: Air Force Research Laboratory, Aerospace Systems Directorate, Edwards AFB, California 93524, United States 2: ERC Incorporated, Edwards AFB, California 93524, United States 3: Naval Surface Warfare Center Indian Head EOD Technology Division, Indian Head, Maryland 20640, United States; Source Info: Jul2016, Vol. 16 Issue 7, p4082; Subject Term: THERMOSETTING composites; Subject Term: CYANATES; Subject Term: ESTERS; Subject Term: MONOMERS; Subject Term: MELTING points; Number of Pages: 12p; Document Type: Article L3 - 10.1021/acs.cgd.6b00612 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116697933&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guenthner, Andrew J. AU - Sahagun, Christopher M. AU - Lamison, Kevin R. AU - Reams, Josiah T. AU - Haddad, Timothy S. AU - Mabry, Joseph M. T1 - Effect of Nanoparticle Functionalization on the Performance of Polycyanurate/Silica Nanocomposites. JO - Industrial & Engineering Chemistry Research JF - Industrial & Engineering Chemistry Research Y1 - 2016/07/06/ VL - 55 IS - 26 M3 - Article SP - 7096 EP - 7107 SN - 08885885 AB - The impact of silica functionalization in determining the performance of polycyanurate networks polymerized from 1,1-bis(4-cyanatophenyl)ethane, known commercially as Primaset LECy, reinforced with modified fumed silica, was elucidated through systematic comparison of the properties of nanocomposite networks in which the silica surface treatment was altered. Three types of surfaces were investigated: moderately acidic (unmodified silanol), neutral (alkylsilane modified), and slightly basic (3-aminopropylsilane modified). In terms of cyanate ester cure, the acidic surface proved to be moderately catalytic, the neutral surface mildly catalytic due to slight residual silanol content, and the basic amino-functional surface mildly inhibitory. In terms of network performance, the amino-functional surface led to significant degradation of the network at elevated temperatures, while the silanol-functional surface outperformed the alkyl-functional surface in terms of protection against hydrolytic degradation. In agreement with expectations, the addition of 2-5 wt% of relatively well-dispersed silica nanoparticles had negligible impact on the fracture toughness of the cyanurate networks. Overall, these results demonstrate that the functionalization of nanoparticle additives for polycyanurate networks is an important determinant of performance and must be taken into consideration in the development of polycyanurate nanocomposites, even at levels that are too low to strongly affect mechanical properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Industrial & Engineering Chemistry Research is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES -- Analysis KW - POLYMERIZATION KW - CHEMICAL processes KW - CATALYTIC activity KW - FRACTURE toughness N1 - Accession Number: 116700858; Guenthner, Andrew J. 1; Email Address: andrew.guenthner@us.af.mil Sahagun, Christopher M. 2 Lamison, Kevin R. 3 Reams, Josiah T. 3 Haddad, Timothy S. 3 Mabry, Joseph M. 1; Affiliation: 1: Aerospace Systems Directorate, Air Force Research Laboratory, Edwards AFB, California 93524, United States 2: National Research Council/Air Force Research Laboratory, Edwards AFB, California 93524, United States 3: ERC Incorporated, Air Force Research Laboratory, Edwards AFB, California 93524, United States; Source Info: Jul2016, Vol. 55 Issue 26, p7096; Subject Term: NANOPARTICLES -- Analysis; Subject Term: POLYMERIZATION; Subject Term: CHEMICAL processes; Subject Term: CATALYTIC activity; Subject Term: FRACTURE toughness; Number of Pages: 12p; Document Type: Article L3 - 10.1021/acs.iecr.6b00498 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116700858&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - MacKunis, W. AU - Leve, F. AU - Patre, P.M. AU - Fitz-Coy, N. AU - Dixon, W.E. T1 - Adaptive neural network-based satellite attitude control in the presence of CMG uncertainty. JO - Aerospace Science & Technology JF - Aerospace Science & Technology Y1 - 2016/07// VL - 54 M3 - Article SP - 218 EP - 228 SN - 12709638 AB - An attitude tracking controller is developed for control moment gyroscope (CMG)-actuated satellites, which is shown to achieve accurate attitude tracking in the presence of unmodeled external disturbance torques, parametric uncertainty, and nonlinear CMG disturbances. Since the disturbances/uncertainties do not all satisfy the typical linear-in-the-parameters (LP) assumption, a neural network (NN) is included in the control development. The innovation of the result is the development of a Lyapunov-based design/analysis that indicates exponential convergence to an arbitrarily small domain. The result is obtained despite the characteristics of the uncertainty; the nonvanishing disturbance terms; and the fact that the control input is premultiplied by a non-square, time-varying, nonlinear, uncertain matrix. In addition to the Lyapunov-based analysis, experimental results demonstrate the performance of the developed controller. [ABSTRACT FROM AUTHOR] AB - Copyright of Aerospace Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADAPTIVE computing systems KW - NEURAL networks (Computer science) KW - GYROSCOPES KW - LINEAR systems KW - STOCHASTIC convergence KW - DESIGN & construction N1 - Accession Number: 115800134; MacKunis, W. 1; Email Address: william.mackunis@erau.edu Leve, F. 2; Email Address: frederick.leve@us.af.mil Patre, P.M. 3; Email Address: parag.patre@gmail.com Fitz-Coy, N. 4; Email Address: nfc@ufl.edu Dixon, W.E. 4; Email Address: wdixon@ufl.edu; Affiliation: 1: Physical Sciences Department, Embry-Riddle Aeronautical University, Daytona Beach, FL 32114, United States 2: Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, NM 87117, United States 3: TE Connectivity, Advanced Manufacturing Technologies Sector, Harrisburg, PA 17111, United States 4: Mechanical and Aerospace Engineering Department, University of Florida, Gainesville, FL 32611-6250, United States; Source Info: Jul2016, Vol. 54, p218; Subject Term: ADAPTIVE computing systems; Subject Term: NEURAL networks (Computer science); Subject Term: GYROSCOPES; Subject Term: LINEAR systems; Subject Term: STOCHASTIC convergence; Subject Term: DESIGN & construction; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ast.2016.04.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115800134&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Leger, Timothy AU - Bisek, Nicholas AU - Poggie, Jonathan T1 - Supersonic Corner Flow Predictions Using the Quadratic Constitutive Relation. JO - AIAA Journal JF - AIAA Journal Y1 - 2016/07// VL - 54 IS - 7 M3 - Article SP - 2077 EP - 2088 SN - 00011452 AB - A series of Reynolds-averaged Navier-Stokes simulations is performed for a supersonic wall-bounded turbulent corner flow. These simulations are compared to a high-order implicit large-eddy simulation for the same geometry and flow conditions. Inclusion of the quadratic constitutive relation in the Reynolds-averaged Navier-Stokes simulation results in significant improvement in qualitative agreement with the large-eddy simulation: specifically, the presence of secondary flow (a counter-rotating vortex pair). The range of valid values for the constant in the quadratic constitutive relation formulation is explored. Additionally, the effects on this range from different turbulence models and momentum thickness Reynolds numbers for the corner are also examined. These effects of the quadratic constitutive relation are explored using both the finite difference fluid solver OVERFLOW and the finite volume fluid solver US3D. The results indicate that the quadratic constitutive relation term directly affects the strength of the vortex pair in the secondary flow and that its influence appears directly dependent on all the aforementioned parameters. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 117719420; Leger, Timothy 1,2 Bisek, Nicholas 1,3 Poggie, Jonathan 4,5; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512 2: Research Scientist; also Ohio Aerospace Institute, Beavercreek, OH 45431; . Senior Member AIAA 3: Research Aerospace Engineer, AFRL/RQHF. Senior Member AIAA 4: Purdue University, West Lafayette, Indiana 47907-2045 5: Professor, School of Aeronautics and Astronautics. Associate Fellow AIAA; Source Info: Jul2016, Vol. 54 Issue 7, p2077; Number of Pages: 12p; Document Type: Article L3 - 10.2514/1.J054732 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117719420&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ha-Rok Bae AU - Alyanak, Ed T1 - Sequential Subspace Reliability Method with Univariate Revolving Integration. JO - AIAA Journal JF - AIAA Journal Y1 - 2016/07// VL - 54 IS - 7 M3 - Article SP - 2160 EP - 2170 SN - 00011452 AB - A new computational framework called the sequential subspace reliability method (SSRM) is presented. This method decomposes the multidimensional random space into multiple two-dimensional subspaces. In this manner, SSRM is able to approximate bivariate interaction effects. When the reliability estimate contribution is calculated subspace by subspace, the final assessment is updated in a progressive manner. The iterative history of sequential reliability assessment can be used to understand the complexity and convergence behavior of the limit state function of interest. In a decision-making situation, the flexibility of the proposed SSRM to provide iterative updates on reliability estimation becomes especially valuable in dealing with large-scale and complex problems under the constraints of limited time and resources. To calculate the individual subspace contributions, a novel univariate revolving integration (URI) method is proposed. The URI method takes advantage of the axisymmetric nature of a joint probability density function and provides an additional layer of flexibility in updating the reliability contribution within each subspace. This flexibility allows the estimation of bivariate and high-order effects to be addressed if resources allow. Additionally, URI is composed of multiple one-dimensional integrals that allow the use of regression models to be used with high confidence. The computational benefits of using the proposed method is demonstrated with several numerical examples of mathematical, structural, and an aircraft conceptual sizing problem. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 117719426; Ha-Rok Bae 1,2 Alyanak, Ed 3,4; Affiliation: 1: Wright State University, Dayton, Ohio 45435 2: Assistant Professor, Department of Mechanical and Materials Engineering. Senior Member AIAA 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 4: Aerospace Research Engineer. Senior Member AIAA; Source Info: Jul2016, Vol. 54 Issue 7, p2160; Number of Pages: 11p; Document Type: Article L3 - 10.2514/1.J054646 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117719426&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - De Sio, Luciano AU - Cataldi, Ugo AU - Bürgi, Thomas AU - Tabiryan, Nelson AU - Bunning, Timothy J. T1 - Control of the plasmonic resonance of a graphene coated plasmonic nanoparticle array combined with a nematic liquid crystal. JO - AIP Advances JF - AIP Advances Y1 - 2016/07// VL - 6 IS - 7 M3 - Article SP - 075114-1 EP - 075114-5 SN - 21583226 AB - We report on the fabrication and characterization of a switchable plasmonic device based on a conductive graphene oxide (cGO) coated plasmonic nanoparticle (NP) array, layered with nematic liquid crystal (NLC) as an active medium. A monolayer of NPs has been immobilized on a glass substrate through electrostatic interaction, and then grown in place using nanochemistry. This monolayer is then coated with a thin (less then 100nm) cGO film which acts simultaneously as both an electro-conductive and active medium. The combination of the conductive NP array with a separate top cover substrate having both cGO and a standard LC alignment layer is used for aligning a NLC film in a hybrid configuration. The system is analysed in terms of morphological and electro-optical properties. The spectral response of the sample characterized after each element is added (air, cGO, NLC) reveals a red-shift of the localized plasmonic resonance (LPR) frequency of approximately 62nm with respect to the NP array surrounded by air. The application of an external voltage (8Vpp) is suitable to modulate (blue shift) the LPR frequency by approximately 22nm. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Advances is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - GRAPHENE KW - LIQUID crystals N1 - Accession Number: 117113942; De Sio, Luciano 1; Email Address: luciano@beamco.com Cataldi, Ugo 2 Bürgi, Thomas 2 Tabiryan, Nelson 1 Bunning, Timothy J. 3; Affiliation: 1: Beam Engineering for Advanced Measurements Company, 1300 Lee Road, Orlando, Florida 32789, USA 2: Département de Chimie Physique, Université de Genève, Quai Ernest-Ansermet 30, 1211 Genève, Switzerland 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7707, USA; Source Info: 2016, Vol. 6 Issue 7, p075114-1; Subject Term: NANOPARTICLES; Subject Term: GRAPHENE; Subject Term: LIQUID crystals; Number of Pages: 5p; Document Type: Article L3 - 10.1063/1.4959869 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117113942&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - AU - Drew Jr., W. E.1 T1 - Wars that changed history: 50 of the world's greatest conflicts. JO - Choice: Current Reviews for Academic Libraries JF - Choice: Current Reviews for Academic Libraries J1 - Choice: Current Reviews for Academic Libraries PY - 2016/07// Y1 - 2016/07// VL - 53 IS - 11 CP - 11 M3 - Book Review SP - 1598 EP - 1598 SN - 00094978 AB - A review of the book "Wars That Changed History: 50 of the World's Greatest Conflicts," by Spencer C. Tucker, is presented. KW - Nonfiction KW - War -- History KW - Tucker, Spencer C. KW - Wars That Changed History: 50 of the World's Greatest Conflicts (Book) N1 - Accession Number: 116435255; Authors: Drew Jr., W. E. 1; Affiliations: 1: Air Force Research Laboratory; Subject: Wars That Changed History: 50 of the World's Greatest Conflicts (Book); Subject: Tucker, Spencer C.; Subject: War -- History; Subject: Nonfiction; Number of Pages: 1/4p; Record Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=116435255&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - Windom, Bret AU - Won, Sang Hee AU - Reuter, Christopher B. AU - Jiang, Bo AU - Ju, Yiguang AU - Hammack, Stephen AU - Ombrello, Timothy AU - Carter, Campbell T1 - Study of ignition chemistry on turbulent premixed flames of n-heptane/air by using a reactor assisted turbulent slot burner. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2016/07// VL - 169 M3 - Article SP - 19 EP - 29 SN - 00102180 AB - The changes in flame structure and burning velocity of premixed n -heptane/air flames associated with ignition chemistry have been investigated in a reactor-assisted turbulent slot (RATS) burner. Two distinct turbulent flame regimes are identified by varying the flow residence time and reactor temperature. A chemically frozen (CF) regime is observed at a reactor temperature of 450 K and a low-temperature ignition (LTI) regime is identified at 650 K. At a reactor temperature of 450 K, the measured turbulent burning velocities ( S T ) exhibit a monotonic trend, proportional only to the turbulent intensity and laminar flame speed ( S L ) calculated with the initial fuel/air mixture. At a reactor temperature of 650 K, S T initially decreases with increasing flow residence times (decreasing turbulent intensity) but then increases once the reactor flow residence time exceeds the LTI delay. Furthermore, S T in the LTI regime exhibits a strong correlation with the extent of low-temperature reactivity (defined by CH 2 O concentration). The species distributions at the exit of the RATS burner after the onset of LTI are quantified by gas sampling-chromatography and used to compute the changes in S L and mixture Lewis number ( Le ), which are shown to substantially change after the onset of LTI. Damköhler's scaling analysis indicates that the increase in S T in the LTI regime originates from an increase in S L , a decrease in Le , and an increase in turbulence intensity due to the heat release from the low-temperature chemistry. To examine the role of ignition chemistry on flame stability, flame flashback measurements have been performed by varying mean jet velocities and n -heptane/air mixture equivalence ratios for reactor temperatures of 450 and 650 K. Measurements at 650 K imply the strong influence of high-temperature ignition on flame stability phenomena. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BURNING velocity KW - TURBULENT heating KW - FLAME stability KW - CHEMICAL reactors KW - COMBUSTION KW - REACTIVITY (Chemistry) KW - Flashback KW - kHz LIF diagnostic KW - Low temperature ignition KW - n -Heptane KW - Turbulent burning velocity N1 - Accession Number: 115978668; Windom, Bret 1,2 Won, Sang Hee 1; Email Address: sangwon@princeton.edu Reuter, Christopher B. 1 Jiang, Bo 1,3 Ju, Yiguang 1 Hammack, Stephen 4 Ombrello, Timothy 5 Carter, Campbell 5; Affiliation: 1: Department of Mechanical and Aerospace Engineering, Princeton University, NJ 08544, USA 2: Department of Mechanical and Aerospace Engineering, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA 3: College of Energy & Power Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, PR China 4: Department of Mechanical Science and Engineering, University of Illinois at Urbana Champaign, IL 61801, USA 5: Air Force Research Laboratory, Aerospace System Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Jul2016, Vol. 169, p19; Subject Term: BURNING velocity; Subject Term: TURBULENT heating; Subject Term: FLAME stability; Subject Term: CHEMICAL reactors; Subject Term: COMBUSTION; Subject Term: REACTIVITY (Chemistry); Author-Supplied Keyword: Flashback; Author-Supplied Keyword: kHz LIF diagnostic; Author-Supplied Keyword: Low temperature ignition; Author-Supplied Keyword: n -Heptane; Author-Supplied Keyword: Turbulent burning velocity; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.combustflame.2016.02.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115978668&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rosenberger, Matthew R. AU - Jones, Jason P. AU - Heller, Eric R. AU - Graham, Samuel AU - King, William P. T1 - Nanometer-Scale Strain Measurements in AlGaN/GaN High-Electron Mobility Transistors During Pulsed Operation. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices Y1 - 2016/07// VL - 63 IS - 7 M3 - Article SP - 2742 EP - 2748 SN - 00189383 AB - Electric, thermal, and mechanical strain fields drive the degradation of AlGaN/GaN high-electron mobility transistors (HEMTs). The resulting mechanical strains within the devices are particularly important. However, a lack of high-resolution measurements of device deformation has limited progress in understanding the related phenomena. This paper presents the atomic force microscope measurements of thermomechanical deformation of AlGaN/GaN HEMT devices during pulsed operation. We investigate the devices with various operating conditions: drain–source voltage, V\mathrm {\mathrm {DS}} , of 0–50 V; drain–source power of 0–6 W/mm; and operating frequency of 55–400 kHz. As V\mathrm {\mathrm {DS}} increases, thermomechanical deformation decreases, especially in the region above the gate. An electrothermomechanical model closely matches with and helps to explain the measurements. According to the model, the maximum periodic tensile thermal stress, which occurs at the drain-side edge of the gate footprint, is 55% larger for V\mathrm {\mathrm {DS}} = 10 V than for V\mathrm {\mathrm {DS}} = 48 V for the same device power. The maximum tensile thermal stress in the device depends on the gate temperature and not the maximum device temperature. As V\mathrm {\mathrm {DS}} increases, the hotspot moves away from the gate, leading to lower gate temperature rise and lower tensile thermal stress. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURED materials KW - STRAINS & stresses (Mechanics) KW - ELECTRON mobility KW - THERMAL strain KW - HIGH electron mobility transistors KW - Aluminum gallium nitride KW - Atomic force microscopy KW - gallium nitride (GaN) KW - HEMTs KW - high-electron mobility transistors (HEMTs) KW - Logic gates KW - MODFETs KW - semiconductor device reliability KW - Strain KW - strain measurement KW - Voltage measurement KW - Wide band gap semiconductors N1 - Accession Number: 116318729; Rosenberger, Matthew R. 1 Jones, Jason P. 2 Heller, Eric R. 3 Graham, Samuel 2 King, William P. 1; Affiliation: 1: Department of Mechanical Science and Engineering, University of Illinois Urbana?Champaign, Urbana, IL, USA 2: The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patternson Air Force Base, OH, USA; Source Info: Jul2016, Vol. 63 Issue 7, p2742; Subject Term: NANOSTRUCTURED materials; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ELECTRON mobility; Subject Term: THERMAL strain; Subject Term: HIGH electron mobility transistors; Author-Supplied Keyword: Aluminum gallium nitride; Author-Supplied Keyword: Atomic force microscopy; Author-Supplied Keyword: gallium nitride (GaN); Author-Supplied Keyword: HEMTs; Author-Supplied Keyword: high-electron mobility transistors (HEMTs); Author-Supplied Keyword: Logic gates; Author-Supplied Keyword: MODFETs; Author-Supplied Keyword: semiconductor device reliability; Author-Supplied Keyword: Strain; Author-Supplied Keyword: strain measurement; Author-Supplied Keyword: Voltage measurement; Author-Supplied Keyword: Wide band gap semiconductors; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TED.2016.2566926 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116318729&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kosai, Hiroyuki AU - Turgut, Zafer AU - Bixel, Tyler AU - Scofield, James T1 - Performance Comparison of Finemet and Metglas Tape Cores Under Non-Sinusoidal Waveforms With DC Bias. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2016/07// VL - 52 IS - 7 M3 - Article SP - 1 EP - 4 SN - 00189464 AB - In a previous paper, we introduced a modified Steinmetz equation to account for dc-bias field effects, which requires only a simple dc permeability measurement to predict total power loss. In this paper, we expanded our investigation to include Finemet nanocrystalline material and found that our modified Steinmetz formalism was effective in predicting dc-bias-related losses for this system as well. In this paper, it was observed that Finemet cores exhibit lower losses than Metglas cores under identical test frequencies and bias fields. In addition, we show that a full characterization of the dc loss component necessitates the consideration of higher order ( $n>1$ ) harmonic components. In order to quantify these higher frequency loss components, a dc–dc converter-based test system was built to intentionally introduce inductor current harmonics by varying the filter capacitance and parasitic inductance of the test system. Both core types were evaluated under fundamental frequencies of 20 to 150 kHz and dc-bias fields of up to 1.3 kA/m, with the inclusion of distorted waveforms obtained by varying filter capacitance. At higher frequencies, the Metglas cores were found to exhibit greater loss fractions associated with the higher order harmonic components. A detailed summary of the measured core loss characteristics for both core types is included and discussed. This paper includes the details of the measurements, the modified Steinmetz relation, and the loss extraction algorithm used for analysis. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC glasses KW - MAGNETIC cores KW - DIRECT currents KW - PERMEABILITY -- Measurement KW - ENERGY dissipation KW - NANOCRYSTALS KW - Amorphous magnetic materials KW - Capacitors KW - core loss KW - DC-DC converter KW - Harmonic analysis KW - inductor KW - Inductors KW - Magnetic cores KW - Power harmonic filters KW - soft magnetic materials N1 - Accession Number: 116435965; Kosai, Hiroyuki 1 Turgut, Zafer 1 Bixel, Tyler 1 Scofield, James 1; Affiliation: 1: , Air Force Research Laboratory, Wright Patterson AFB, OH, USA; Source Info: Jul2016, Vol. 52 Issue 7, p1; Subject Term: METALLIC glasses; Subject Term: MAGNETIC cores; Subject Term: DIRECT currents; Subject Term: PERMEABILITY -- Measurement; Subject Term: ENERGY dissipation; Subject Term: NANOCRYSTALS; Author-Supplied Keyword: Amorphous magnetic materials; Author-Supplied Keyword: Capacitors; Author-Supplied Keyword: core loss; Author-Supplied Keyword: DC-DC converter; Author-Supplied Keyword: Harmonic analysis; Author-Supplied Keyword: inductor; Author-Supplied Keyword: Inductors; Author-Supplied Keyword: Magnetic cores; Author-Supplied Keyword: Power harmonic filters; Author-Supplied Keyword: soft magnetic materials; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TMAG.2015.2512438 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116435965&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lin, Hwaider AU - Gao, Yuan AU - Wang, Xinjun AU - Nan, Tianxiang AU - Liu, Ming AU - Lou, Jing AU - Yang, Guomin AU - Zhou, Ziyao AU - Yang, Xi AU - Wu, Jing AU - Li, Ming AU - Hu, Zhongqiang AU - Sun, Nian Xiang T1 - Integrated Magnetics and Multiferroics for Compact and Power-Efficient Sensing, Memory, Power, RF, and Microwave Electronics. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2016/07// VL - 52 IS - 7 M3 - Article SP - 1 EP - 8 SN - 00189464 AB - The coexistence of electric polarization and magnetization in multiferroic materials provides great opportunities for realizing magnetoelectric (ME) coupling, including electric field control of magnetism, or vice versa, through a strain-mediated ME coupling in layered magnetic/ferroelectric multiferroic heterostructures. Strong ME coupling has been the enabling factor for different multiferroic devices, which, however, has been elusive, particularly at RF/microwave frequencies. In this paper, most recent progress on new integrated multiferroic devices for sensing RF and microwave electronics will be presented, including novel RF Nano-electro-mechanical systems ME resonators with picotesla sensitivity for dc magnetic fields and novel gigahertz magnetic and multiferroic integrated inductors with a wide operation frequency range of $0.3\sim 3$ GHz, a high quality factor close to 20, and a voltage tunable inductance of 50% $\sim 150$ %. At the same time, we will also demonstrate other tunable RF devices, including integrated non-reciprocal tunable bandpass filter with ultrawideband isolation more than 13 dB. These novel magnetics and multiferroic devices show great promise for applications, such as compact, lightweight, and power-efficient sensing, memory, RF, and microwave integrated electronics. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIFERROIC materials KW - RADIO frequency KW - MICROWAVES KW - ELECTRIC polarizability KW - MAGNETOELECTRIC effect KW - MAGNETIC couplings KW - Couplings KW - Electric fields KW - Inductance KW - Magnetization KW - magnetoelectric KW - Magnetoelectric effects KW - magnetometer KW - Multiferroic KW - Q-factor KW - tunable RF N1 - Accession Number: 116435904; Lin, Hwaider 1 Gao, Yuan 1 Wang, Xinjun 1 Nan, Tianxiang 2 Liu, Ming 3 Lou, Jing 1 Yang, Guomin 4 Zhou, Ziyao 5 Yang, Xi 6 Wu, Jing 1 Li, Ming 1 Hu, Zhongqiang 7 Sun, Nian Xiang 1; Affiliation: 1: Department of Electrical and Computer EngineeringW.M. Keck Laboratory for Integrated Ferroics, Northeastern University, Boston, MA, USA 2: , University of Wisconsin?Madison, Madison, WI, USA 3: , Xi?an Jiaotong University, Xi’an, China 4: , Fudan University, Shanghai, China 5: , Argonne National Laboratory, Lemont, IL, USA 6: , Beijing Institute of Technology, Beijing, China 7: , Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Jul2016, Vol. 52 Issue 7, p1; Subject Term: MULTIFERROIC materials; Subject Term: RADIO frequency; Subject Term: MICROWAVES; Subject Term: ELECTRIC polarizability; Subject Term: MAGNETOELECTRIC effect; Subject Term: MAGNETIC couplings; Author-Supplied Keyword: Couplings; Author-Supplied Keyword: Electric fields; Author-Supplied Keyword: Inductance; Author-Supplied Keyword: Magnetization; Author-Supplied Keyword: magnetoelectric; Author-Supplied Keyword: Magnetoelectric effects; Author-Supplied Keyword: magnetometer; Author-Supplied Keyword: Multiferroic; Author-Supplied Keyword: Q-factor; Author-Supplied Keyword: tunable RF; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TMAG.2016.2514982 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116435904&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Turgut, Z. AU - Shen, Y. AU - Leontsev, S. AU - Horwath, J. C. AU - Semiatin, S. L. T1 - Anisotropic \alpha -Fe/Nd–Fe–B Exchange-Spring Magnets Produced by High-Pressure Crystallization. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2016/07// VL - 52 IS - 7 M3 - Article SP - 1 EP - 4 SN - 00189464 AB - A series of Nd–Fe–B + $\alpha $ -Fe nanocomposites was prepared by pressure crystallization of quasi-amorphous rare-earth lean precursors. The crystallization temperature of Nd2Fe14B was determined to be 560 °C. Fully dense compacts crystallized under the pressures of up to 1 GPa exhibited a fully exchange coupled behavior with coercivities ranging from 1.98 to 2.5 kOe, depending on the Nd content. The evolution of coercivity as a function of pressure crystallization time indicated slower crystallization/growth kinetics compared with the ribbons crystallized under atmospheric pressure. All crystallization took place within 5 min and optimum coercivities were obtained after 20 min of holding time. Both the X-ray diffraction and magnetic measurement $M(H)$ results indicated the presence of a crystalline texture. Microstructural characterizations by a transmission electron microscope revealed a layered structure composed of alternating layers of Nd2Fe14B and $\alpha $ -Fe. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC anisotropy KW - CRYSTALLIZATION KW - RARE earths KW - NANOCOMPOSITE materials KW - HIGH pressure (Technology) KW - MAGNETS KW - AMORPHOUS substances KW - Coercive force KW - Crystallization KW - exchange-spring KW - Grain size KW - magnetic anisotropy KW - Magnetic confinement KW - Metals KW - Nd-Fe-B magnets KW - Perpendicular magnetic anisotropy KW - pressure crystallization N1 - Accession Number: 116436004; Turgut, Z. 1 Shen, Y. 1 Leontsev, S. 1 Horwath, J. C. 1 Semiatin, S. L. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Jul2016, Vol. 52 Issue 7, p1; Subject Term: MAGNETIC anisotropy; Subject Term: CRYSTALLIZATION; Subject Term: RARE earths; Subject Term: NANOCOMPOSITE materials; Subject Term: HIGH pressure (Technology); Subject Term: MAGNETS; Subject Term: AMORPHOUS substances; Author-Supplied Keyword: Coercive force; Author-Supplied Keyword: Crystallization; Author-Supplied Keyword: exchange-spring; Author-Supplied Keyword: Grain size; Author-Supplied Keyword: magnetic anisotropy; Author-Supplied Keyword: Magnetic confinement; Author-Supplied Keyword: Metals; Author-Supplied Keyword: Nd-Fe-B magnets; Author-Supplied Keyword: Perpendicular magnetic anisotropy; Author-Supplied Keyword: pressure crystallization; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TMAG.2016.2524547 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116436004&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wiley, Rachel E. T1 - A Case Study of Cognitive Processing Therapy for a Military Medic With Posttraumatic Stress Disorder. JO - Journal of Cognitive Psychotherapy JF - Journal of Cognitive Psychotherapy Y1 - 2016/07// VL - 30 IS - 3 M3 - Article SP - 203 EP - 220 SN - 08898391 AB - Cognitive processing therapy (CPT) is an effective treatment for posttraumatic stress disorder (PTSD) in the active duty and veteran population. This case study provides a thorough example of the use of this therapeutic modality with an active duty military service member who was exposed to several traumatic events. Over the course of 13 sessions, "Master Sergeant Smith," a middle-aged, White male, made significant progress on his treatment plan goals and reductions in PTSD symptoms. This case study describes the theoretical and research basis for treatment and course of treatment and illustrates the use of CPT in an outpatient setting while describing important areas of focus and how to overcome clinical challenges. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Cognitive Psychotherapy is the property of Springer Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COGNITIVE therapy KW - MEDICAL personnel KW - POST-traumatic stress disorder KW - MILITARY personnel KW - TREATMENT effectiveness KW - case study KW - cognitive processing therapy KW - military KW - posttraumatic stress disorder N1 - Accession Number: 121429567; Wiley, Rachel E. 1; Affiliation: 1: United States Air Force; Source Info: 2016, Vol. 30 Issue 3, p203; Subject Term: COGNITIVE therapy; Subject Term: MEDICAL personnel; Subject Term: POST-traumatic stress disorder; Subject Term: MILITARY personnel; Subject Term: TREATMENT effectiveness; Author-Supplied Keyword: case study; Author-Supplied Keyword: cognitive processing therapy; Author-Supplied Keyword: military; Author-Supplied Keyword: posttraumatic stress disorder; Number of Pages: 18p; Document Type: Article L3 - 10.1891/0889-8391.30.3.203 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=121429567&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 121429567 T1 - A Case Study of Cognitive Processing Therapy for a Military Medic With Posttraumatic Stress Disorder. AU - Wiley, Rachel E. Y1 - 2016/07// N1 - Accession Number: 121429567. Language: English. Entry Date: 20170306. Revision Date: 20170306. Publication Type: Article. Journal Subset: Biomedical; Double Blind Peer Reviewed; Peer Reviewed; USA. NLM UID: 8806397. KW - Stress Disorders, Post-Traumatic KW - Cognitive Therapy KW - Male KW - Military Personnel KW - Health Personnel KW - Outpatients KW - Middle Age KW - Treatment Outcomes SP - 203 EP - 220 JO - Journal of Cognitive Psychotherapy JF - Journal of Cognitive Psychotherapy JA - J COGNIT PSYCHOTHER VL - 30 IS - 3 CY - New York, New York PB - Springer Publishing Company, Inc. SN - 0889-8391 AD - United States Air Force DO - 10.1891/0889-8391.30.3.203 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=121429567&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Font, Gabriel I. T1 - Computational acceleration of orbital neutral sensor ionizer simulation through phenomena separation. JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2016/07// VL - 316 M3 - Article SP - 1 EP - 9 SN - 00219991 AB - Simulation of orbital phenomena is often difficult because of the non-continuum nature of the flow, which forces the use of particle methods, and the disparate time scales, which make long run times necessary. In this work, the computational work load has been reduced by taking advantage of the low number of collisions between different species. This allows each population of particles to be brought into convergence separately using a time step size optimized for its particular motion. The converged populations are then brought together to simulate low probability phenomena, such as ionization or excitation, on much longer time scales. The result of this technique has the effect of reducing run times by a factor of 10 3 – 10 4 . The technique was applied to the simulation of a low earth orbit neutral species sensor with an ionizing element. Comparison with laboratory experiments of ion impacts generated by electron flux shows very good agreement. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MESOSCOPIC phenomena (Physics) KW - IONIZATION (Atomic physics) KW - MATHEMATICAL models KW - ORBITAL mechanics KW - NEUTRAL mutations KW - ELECTRON beams KW - Acceleration KW - Computation KW - DSMC KW - Ionosphere KW - Orbital sensor KW - PIC N1 - Accession Number: 115215297; Font, Gabriel I. 1; Email Address: gabriel.font@usafa.edu; Affiliation: 1: Dept. of Physics, US Air Force Academy, United States; Source Info: Jul2016, Vol. 316, p1; Subject Term: MESOSCOPIC phenomena (Physics); Subject Term: IONIZATION (Atomic physics); Subject Term: MATHEMATICAL models; Subject Term: ORBITAL mechanics; Subject Term: NEUTRAL mutations; Subject Term: ELECTRON beams; Author-Supplied Keyword: Acceleration; Author-Supplied Keyword: Computation; Author-Supplied Keyword: DSMC; Author-Supplied Keyword: Ionosphere; Author-Supplied Keyword: Orbital sensor; Author-Supplied Keyword: PIC; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jcp.2016.02.060 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115215297&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, Martin L. AU - Syse, Henrik T1 - Editors' Introduction. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2016/07// VL - 15 IS - 2 M3 - Article SP - 79 EP - 80 SN - 15027570 AB - The author reflects on the military ethics of the U.S. Topics discussed include the Cold War, spread of weapons of mass destruction, and uses of military forces against non-state actors. Also being discussed are violations of the United Nations (UN) Convention on the Law of the Sea, and military technological capability. KW - MILITARY ethics KW - WEAPONS of mass destruction KW - MILITARY technology KW - ARMED Forces KW - UNITED States KW - UNITED Nations N1 - Accession Number: 117808646; Cook, Martin L. 1,2 Syse, Henrik 3,4; Affiliation: 1: Admiral James Bond Stockdale Professor Emeritus of Professional Military Ethics, United States Naval War College, Newport,Rhode Island, USA 2: Distinguished Visiting Professor of Philosophy, United States Air Force Academy, Colorado Springs, Colorado, USA 3: Senior Researcher, Peace Research Institute Oslo (PRIO), Norway 4: Professor of Peace and Conflict Studies, Björknes University College, Oslo, Norway; Source Info: Jul2016, Vol. 15 Issue 2, p79; Subject Term: MILITARY ethics; Subject Term: WEAPONS of mass destruction; Subject Term: MILITARY technology; Subject Term: ARMED Forces; Subject Term: UNITED States; Company/Entity: UNITED Nations; NAICS/Industry Codes: 928120 International Affairs; NAICS/Industry Codes: 919110 International and other extra-territorial public administration; NAICS/Industry Codes: 928110 National Security; Number of Pages: 2p; Document Type: Article L3 - 10.1080/15027570.2016.1214009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117808646&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Semiatin, S. L. AU - Zhang, F. AU - Tiley, J. S. AU - Furrer, D. U. T1 - A comparison of the precipitation behavior in PM γ-γ' nickel-base superalloys. JO - Materials at High Temperatures JF - Materials at High Temperatures Y1 - 2016/07// VL - 33 IS - 4/5 M3 - Article SP - 301 EP - 309 SN - 09603409 AB - The precipitation of γ' in three powder metallurgy nickel-base superalloys during continuous cooling following supersolvus solution treatment was quantified and compared using a fast-acting, mean-field analysis and selected independent experimental observations. The three alloys, LSHR, IN-100 and René 88, were chosen based on the range of γ' solvus temperatures and diffusivities which they exhibit. With its intermediate solvus temperature, LSHR served as the baseline material. For all three alloys, the average size of secondary γ' (), which is formed at higher temperatures, followed a dependence on cooling rate θ of the form = B θ-0.5, in which B is a constant whose value increases with solvus temperature. This behaviour was rationalized on the basis of the narrow range of temperature over which nucleation occurs for secondary γ', and hence the importance of precipitate growth in controlling precipitate size. The simulation results also revealed that the breadth of the distribution of secondary γ' sizes was rather small with the ratio of the standard deviation to near 0.03 in all cases. In contrast to the behaviour for secondary γ', tertiary γ' was predicted to nucleate over a broad, but similar, range of temperatures for all of the alloys. Because nucleation and growth of tertiary γ' occur at relatively low temperatures, and thus lower effective diffusivities, the sizes of these precipitates were predicted to be more than one order of magnitude smaller than that of the secondary γ'. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials at High Temperatures is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT resistant alloys KW - NICKEL KW - PRECIPITATION (Meteorology) KW - NUCLEATION KW - COOLING KW - METALLURGY KW - Coarsening KW - Diffusivity KW - Gamma prime KW - Growth KW - Nucleation KW - Precipitation KW - Superalloys N1 - Accession Number: 118805094; Semiatin, S. L. 1; Email Address: sheldon.semiatin@us.af.mil Zhang, F. 2 Tiley, J. S. 1 Furrer, D. U. 3; Affiliation: 1: Air Force Research Laboratory, AFRL/RXCM, Wright-Patterson Air Force Base, OH 45433-7817, USA 2: CompuTherm, LLC, Madison, WI 53719, USA 3: Pratt & Whitney, 400 Main Street, East Hartford, CT 06118, USA; Source Info: 2016, Vol. 33 Issue 4/5, p301; Subject Term: HEAT resistant alloys; Subject Term: NICKEL; Subject Term: PRECIPITATION (Meteorology); Subject Term: NUCLEATION; Subject Term: COOLING; Subject Term: METALLURGY; Author-Supplied Keyword: Coarsening; Author-Supplied Keyword: Diffusivity; Author-Supplied Keyword: Gamma prime; Author-Supplied Keyword: Growth; Author-Supplied Keyword: Nucleation; Author-Supplied Keyword: Precipitation; Author-Supplied Keyword: Superalloys; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 9p; Illustrations: 1 Diagram, 4 Charts, 7 Graphs; Document Type: Article L3 - 10.1080/09603409.2016.1165449 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=118805094&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Braun, Nicholas J. AU - DeBrosse, Madeleine C. AU - Hussain, Saber M. AU - Comfort, Kristen K. T1 - Modification of the protein corona–nanoparticle complex by physiological factors. JO - Materials Science & Engineering: C JF - Materials Science & Engineering: C Y1 - 2016/07// VL - 64 M3 - Article SP - 34 EP - 42 SN - 09284931 AB - Nanoparticle (NP) effects in a biological system are driven through the formation and structure of the protein corona–NP complex, which is dynamic by nature and dependent upon factors from both the local environment and NP physicochemical parameters. To date, considerable data has been gathered regarding the structure and behavior of the protein corona in blood, plasma, and traditional cell culture medium. However, there exists a knowledge gap pertaining to the protein corona in additional biological fluids and following incubation in a dynamic environment. Using 13 nm gold NPs (AuNPs), functionalized with either polyethylene glycol or tannic acid, we demonstrated that both particle characteristics and the associated protein corona were altered when exposed to artificial physiological fluids and under dynamic flow. Furthermore, the magnitude of observed behavioral shifts were dependent upon AuNP surface chemistry. Lastly, we revealed that exposure to interstitial fluid produced protein corona modifications, reshaping of the nano-cellular interface, modified AuNP dosimetry, and induction of previously unseen cytotoxicity. This study highlights the need to elucidate both NP and protein corona behavior in biologically representative environments in an effort to increase accurate interpretation of data and transfer of this knowledge to efficacy, behavior, and safety of nano-based applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Science & Engineering: C is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTEIN structure KW - CORONA (Surface discharges) KW - BIOLOGICAL systems KW - CELL culture KW - BIOLOGICAL fluid dynamics KW - GOLD nanoparticles KW - INTERFACES (Physical sciences) KW - Cytotoxicity KW - Dynamic flow KW - Gold nanoparticle KW - Interstitial fluid KW - Nano-cellular interface KW - Tannic acid N1 - Accession Number: 114847576; Braun, Nicholas J. 1 DeBrosse, Madeleine C. 1 Hussain, Saber M. 1 Comfort, Kristen K. 2; Email Address: kcomfort1@udayton.edu; Affiliation: 1: Molecular Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, 711 Human Performance Wing, Air Force Research Laboratory, Wright Patterson AFB, 2729 R. St, Bldg 837, Dayton, OH, 45433, USA 2: Department of Chemical and Materials Engineering, University of Dayton, 524 Kettering Laboratories, 300 College Park, Dayton, OH 45469, USA; Source Info: Jul2016, Vol. 64, p34; Subject Term: PROTEIN structure; Subject Term: CORONA (Surface discharges); Subject Term: BIOLOGICAL systems; Subject Term: CELL culture; Subject Term: BIOLOGICAL fluid dynamics; Subject Term: GOLD nanoparticles; Subject Term: INTERFACES (Physical sciences); Author-Supplied Keyword: Cytotoxicity; Author-Supplied Keyword: Dynamic flow; Author-Supplied Keyword: Gold nanoparticle; Author-Supplied Keyword: Interstitial fluid; Author-Supplied Keyword: Nano-cellular interface; Author-Supplied Keyword: Tannic acid; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.msec.2016.03.059 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114847576&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Greenwood, A. D. AU - Hammond, J. F. AU - Zhang, P. AU - Lau, Y. Y. T1 - On relativistic space charge limited current in planar, cylindrical, and spherical diodes. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2016/07// VL - 23 IS - 7 M3 - Article SP - 1 EP - 7 SN - 1070664X AB - This paper revisits the relativistic limiting current in planar, cylindrical, and spherical diodes, with alternative analytic and numerical treatments which are easy to implement. Convenient, approximate expressions for the limited current are presented for gap voltages up to 10 MV. They are accurate to within 1% for planar diode, and to within 4% for both cylindrical and spherical diode in the range 10-5 < rc=ra < 500, where ra and rc are, respectively, the anode and cathode radius. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RELATIVITY (Physics) KW - DIODES KW - ELECTRIC potential KW - ENERGY gaps (Physics) KW - NUMERICAL analysis N1 - Accession Number: 117149081; Greenwood, A. D. 1 Hammond, J. F. 1 Zhang, P. 2 Lau, Y. Y. 2; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, New Mexico 87117-5776, USA 2: Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109-2104, USA; Source Info: 2016, Vol. 23 Issue 7, p1; Subject Term: RELATIVITY (Physics); Subject Term: DIODES; Subject Term: ELECTRIC potential; Subject Term: ENERGY gaps (Physics); Subject Term: NUMERICAL analysis; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 7p; Illustrations: 2 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.4954827 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117149081&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CASE AU - Cleaver, Timothy A. AU - Gutman, Alex J. AU - Martin, Christopher L. AU - Reeder, Mark F. AU - Hill, Raymond R. T1 - Using design of experiments methods for applied computational fluid dynamics: A case study. JO - Quality Engineering JF - Quality Engineering Y1 - 2016/07//Jul-Sep2016 VL - 28 IS - 3 M3 - Case Study SP - 280 EP - 292 SN - 08982112 AB - This article presents an application of design of experiments (DOE) in a computational fluid dynamics (CFD) environment to study forces and moments acting on a missile through various speeds and angles of attack. Researchers employed a four-factor Latin hypercube space-filling design and the Gaussian Process to build a surrogate model of the CFD environment. The surrogate model was used to characterize missile aerodynamic coefficients across the transonic flight regime. The DOE process completed the task with less computational resources than a traditional one-factor-at-a-time (OFAT) approach. To validate the surrogate model, specific OFAT angle of attack sweeps were performed. This provided a direct comparison between the Gaussian Process model and OFAT analysis. In most cases, the surrogate computer model was able to accurately capture the nonlinear response variables. Moreover, the surrogate model enabled a dynamic prediction tool that could investigate untested scenarios, a capability not available with OFAT. The DOE process consequently received support from engineers who do not typically use DOE. [ABSTRACT FROM AUTHOR] AB - Copyright of Quality Engineering is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTATIONAL fluid dynamics KW - EXPERIMENTAL design KW - ANGLE of attack (Aerodynamics) KW - LATIN hypercube sampling KW - GAUSSIAN processes KW - computational fluid dynamics KW - experimental design KW - Gaussian process KW - Latin hypercube KW - one-factor-at-a-time KW - space-filling design N1 - Accession Number: 116268507; Cleaver, Timothy A. 1; Gutman, Alex J. 2; Martin, Christopher L. 3; Reeder, Mark F. 3; Hill, Raymond R. 3; Affiliations: 1: Aerodynamics Validation Branch, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio; 2: The Procter & Gamble Company, Mason, Ohio; 3: Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio; Issue Info: Jul-Sep2016, Vol. 28 Issue 3, p280; Subject Term: COMPUTATIONAL fluid dynamics; Subject Term: EXPERIMENTAL design; Subject Term: ANGLE of attack (Aerodynamics); Subject Term: LATIN hypercube sampling; Subject Term: GAUSSIAN processes; Author-Supplied Keyword: computational fluid dynamics; Author-Supplied Keyword: experimental design; Author-Supplied Keyword: Gaussian process; Author-Supplied Keyword: Latin hypercube; Author-Supplied Keyword: one-factor-at-a-time; Author-Supplied Keyword: space-filling design; Number of Pages: 13p; Document Type: Case Study L3 - 10.1080/08982112.2015.1101645 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=116268507&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Nordeen, C. AU - Schwer, D. AU - Schauer, F. AU - Hoke, J. AU - Barber, T. AU - Cetegen, B. T1 - Role of inlet reactant mixedness on the thermodynamic performance of a rotating detonation engine. JO - Shock Waves JF - Shock Waves Y1 - 2016/07// VL - 26 IS - 4 M3 - Article SP - 417 EP - 428 SN - 09381287 AB - Rotating detonation engines have the potential to achieve the high propulsive efficiencies of detonation cycles in a simple and effective annular geometry. A two-dimensional Euler simulation is modified to include mixing factors to simulate the imperfect mixing of injected reactant streams. Contrary to expectations, mixing is shown to have a minimal impact on performance. Oblique detonation waves are shown to increase local stream thermal efficiency, which compensates for other losses in the flow stream. The degree of reactant mixing is, however, a factor in controlling the stability and existence of rotating detonations. [ABSTRACT FROM AUTHOR] AB - Copyright of Shock Waves is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INLETS KW - SUBSTRATES (Biochemistry) KW - EULER'S numbers KW - THERMAL efficiency KW - DETONATION waves KW - Injection mixing KW - Numerical simulation KW - Rotating detonation engine KW - Thermodynamic performance N1 - Accession Number: 117721790; Nordeen, C. 1; Email Address: n0rd33n@sbcglobal.net Schwer, D. 2; Email Address: Schwer@lcp.nrl.navy.mil Schauer, F. 3; Email Address: frederick.schauer@wpafb.af.mil Hoke, J. 4; Email Address: John.Hoke.ctr@wpafb.af.mil Barber, T. 1; Email Address: barbertj@engr.uconn.edu Cetegen, B. 1; Email Address: cetegen@engr.uconn.edu; Affiliation: 1: University of Connecticut , Storrs Mansfield 06269-3139 USA 2: Naval Research Laboratory , Washington 20375 USA 3: Air Force Research Laboratory , Wright-Patterson AFB Dayton 45433 USA 4: Innovative Scientific Solutions Inc. , Dayton 45440 USA; Source Info: Jul2016, Vol. 26 Issue 4, p417; Subject Term: INLETS; Subject Term: SUBSTRATES (Biochemistry); Subject Term: EULER'S numbers; Subject Term: THERMAL efficiency; Subject Term: DETONATION waves; Author-Supplied Keyword: Injection mixing; Author-Supplied Keyword: Numerical simulation; Author-Supplied Keyword: Rotating detonation engine; Author-Supplied Keyword: Thermodynamic performance; Number of Pages: 12p; Document Type: Article L3 - 10.1007/s00193-015-0570-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117721790&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Nordeen, C. AU - Schwer, D. AU - Schauer, F. AU - Hoke, J. AU - Barber, T. AU - Cetegen, B. T1 - Erratum to: Role of inlet reactant mixedness on the thermodynamic performance of a rotating detonation engine. JO - Shock Waves JF - Shock Waves Y1 - 2016/07// VL - 26 IS - 4 M3 - Erratum SP - 529 EP - 529 SN - 09381287 AB - A correction to the article "Role of inlet reactant mixedness on the thermodynamic performance of a rotating detonation engine" that was published on the July 19, 2016 issue is presented. KW - INLETS KW - SUBSTRATES (Biochemistry) KW - THERMODYNAMICS N1 - Accession Number: 117721780; Nordeen, C. 1; Email Address: n0rd33n@sbcglobal.net Schwer, D. 2; Email Address: Schwer@lcp.nrl.navy.mil Schauer, F. 3; Email Address: frederick.schauer@wpafb.af.mil Hoke, J. 4; Email Address: John.Hoke.ctr@wpafb.af.mil Barber, T. 1; Email Address: barbertj@engr.uconn.edu Cetegen, B. 1; Email Address: cetegen@engr.uconn.edu; Affiliation: 1: University of Connecticut , Storrs Mansfield 06269-3139 USA 2: Naval Research Laboratory , Washington 20375 USA 3: Air Force Research Laboratory , Wright-Patterson AFB , Dayton 45433 USA 4: Innovative Scientific Solutions Inc. , Dayton 45440 USA; Source Info: Jul2016, Vol. 26 Issue 4, p529; Subject Term: INLETS; Subject Term: SUBSTRATES (Biochemistry); Subject Term: THERMODYNAMICS; Number of Pages: 1p; Document Type: Erratum L3 - 10.1007/s00193-016-0681-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117721780&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2016-23911-001 AN - 2016-23911-001 AU - Lyons, Joseph B. AU - Ho, Nhut T. AU - Fergueson, William E. AU - Sadler, Garrett G. AU - Cals, Samantha D. AU - Richardson, Casey E. AU - Wilkins, Mark A. T1 - Trust of an automatic ground collision avoidance technology: A fighter pilot perspective. JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2016/07// VL - 28 IS - 4 SP - 271 EP - 277 CY - US PB - Educational Publishing Foundation SN - 0899-5605 SN - 1532-7876 AD - Lyons, Joseph B., Air Force Research Laboratory, Human Trust and Interaction Branch, Wright-Patterson Air Force Base, 711 Human Performance Wing, Human-Centered ISR Division, 2215 1st Street, Building 33, OH, US, 45433 N1 - Accession Number: 2016-23911-001. Partial author list: First Author & Affiliation: Lyons, Joseph B.; Air Force Research Laboratory, Human Trust and Interaction Branch, Wright-Patterson Air Force Base, OH, US. Other Publishers: Lawrence Erlbaum; Taylor & Francis. Release Date: 20160516. Correction Date: 20160704. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Accident Prevention; Air Force Personnel; Aircraft Pilots; Aviation Safety; Trust (Social Behavior). Minor Descriptor: Aviation; Technology. Classification: Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 7. Issue Publication Date: Jul, 2016. Publication History: First Posted Date: May 16, 2016; Accepted Date: Mar 30, 2016; Revised Date: Mar 15, 2016; First Submitted Date: Nov 11, 2015. AB - The present study examined the antecedents of trust among operational Air Force fighter pilots for an automatic ground collision avoidance technology. This technology offered a platform with high face validity for studying trust in automation because it is an automatic system currently being used in operations by the Air Force. Pilots (N = 142) responded to an online survey which asked about their attitudes toward the technology and assessed a number of psychological factors. Consistent with prior research on trust in automation, a number of trust antecedents were identified which corresponded to human factors, learned trust factors, and situational factors. Implications for the introduction of novel automatic systems into the military are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - trust KW - trust in automation KW - automatic ground collision avoidance system KW - aviation psychology KW - 2016 KW - Accident Prevention KW - Air Force Personnel KW - Aircraft Pilots KW - Aviation Safety KW - Trust (Social Behavior) KW - Aviation KW - Technology KW - 2016 DO - 10.1037/mil0000124 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-23911-001&site=ehost-live&scope=site UR - joseph.lyons.6@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Hong, Gongyi AU - Pachter, Ruth T1 - Bound Flavin-Cytochrome Model of Extracellular Electron Transfer in Shewanella oneidensis: Analysis by Free Energy Molecular Dynamics Simulations. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2016/06/30/ VL - 120 IS - 25 M3 - Article SP - 5617 EP - 5624 SN - 15206106 AB - Flavins are known to enhance extracellular electron transfer (EET) in Shewanella oneidensis MR-1 bacteria, which reduce electron acceptors through outer-membrane (OM) cytochromes c. Free-shuttle and bound-redox cofactor mechanisms were proposed to explain this enhancement, but recent electrochemical reports favor a flavin-bound model, proposing two one-electron reductions of flavin, namely, oxidized (Ox) to semiquinone (Sq) and semiquinone to hydroquinone (Hq), at anodic and cathodic conditions, respectively. In this work, to provide a mechanistic understanding of riboflavin (RF) binding at the multiheme OM cytochrome OmcA, we explored binding configurations at hemes 2, 5, 7, and 10. Subsequently, on the basis of molecular dynamics (MD) simulations, binding free energies and redox potential shifts upon RF binding for the Ox/Sq and Sq/Hq reductions were analyzed. Our results demonstrated an upshift in the Ox/Sq and a downshift in the Sq/Hq redox potentials, consistent with a bound RF-OmcA model. Furthermore, binding free energy MD simulations indicated an RF binding preference at heme 7. MD simulations of the OmcA-MtrC complex interfacing at hemes 5 revealed a small interprotein redox potential difference with an electron transfer rate of 107-108/s. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CYTOCHROMES KW - CHARGE exchange KW - SHEWANELLA oneidensis KW - FREE energy (Thermodynamics) KW - MOLECULAR dynamics N1 - Accession Number: 116597457; Hong, Gongyi 1 Pachter, Ruth 1; Email Address: ruth.pachter@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, United States; Source Info: Jun2016, Vol. 120 Issue 25, p5617; Subject Term: CYTOCHROMES; Subject Term: CHARGE exchange; Subject Term: SHEWANELLA oneidensis; Subject Term: FREE energy (Thermodynamics); Subject Term: MOLECULAR dynamics; Number of Pages: 8p; Document Type: Article L3 - 10.1021/acs.jpcb.6b03851 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116597457&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barr, Stephen A. AU - Kedziora, Gary S. AU - Ecker, Allison M. AU - Moller, James C. AU - Berry, Rajiv J. AU - Breitzman, Tim D. T1 - Bond breaking in epoxy systems: A combined QM/MM approach. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2016/06/28/ VL - 144 IS - 24 M3 - Article SP - 1 EP - 10 SN - 00219606 AB - A novel method to combine quantum mechanics (QM) and molecular mechanics has been developed to accurately and efficiently account for covalent bond breaking in polymer systems under high strain without the use of predetermined break locations. Use of this method will provide a better fundamental understanding of the mechano-chemical origins of fracture in thermosets. Since classical force fields cannot accurately account for bond breaking, and QM is too demanding to simulate large systems, a hybrid approach is required. In the method presented here, strain is applied to the system using a classical force field, and all bond lengths are monitored. When a bond is stretched past a threshold value, a zone surrounding the bond is used in a QM energy minimization to determine which, if any, bonds break. The QM results are then used to reconstitute the system to continue the classical simulation at progressively larger strain until another QM calculation is triggered. In this way, a QM calculation is only computed when and where needed, allowing for efficient simulations. A robust QM method for energy minimization has been determined, as well as appropriate values for the QM zone size and the threshold bond length. Compute times do not differ dramatically from classical molecular mechanical simulations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPOXY compounds KW - SCISSION (Chemistry) KW - QUANTUM mechanics/molecular mechanics KW - COVALENT bonds (Chemistry) KW - FRACTURE mechanics KW - MOLECULAR force constants N1 - Accession Number: 116562024; Barr, Stephen A. 1 Kedziora, Gary S. 2 Ecker, Allison M. 1 Moller, James C. 3 Berry, Rajiv J. 1; Email Address: Rajiv.Berry@us.af.mil Breitzman, Tim D. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, Ohio 45433, USA 2: Engility Corporation, Air Force Research Laboratory, WPAFB, Ohio 45433, USA 3: Miami University, Oxford, Ohio 45056, USA; Source Info: 2016, Vol. 144 Issue 24, p1; Subject Term: EPOXY compounds; Subject Term: SCISSION (Chemistry); Subject Term: QUANTUM mechanics/molecular mechanics; Subject Term: COVALENT bonds (Chemistry); Subject Term: FRACTURE mechanics; Subject Term: MOLECULAR force constants; Number of Pages: 10p; Illustrations: 4 Diagrams, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1063/1.4954507 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116562024&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2016-32155-001 AN - 2016-32155-001 AU - Wang, Qiang AU - Bowling, Nathan A. AU - Tian, Qi-tao AU - Alarcon, Gene M. AU - Kwan, Ho Kwong T1 - Workplace harassment intensity and revenge: Mediation and moderation effects. JF - Journal of Business Ethics JO - Journal of Business Ethics JA - J Bus Ethics Y1 - 2016/06/27/ CY - Germany PB - Springer SN - 0167-4544 SN - 1573-0697 AD - Wang, Qiang, Department of Business Administration, School of Business, East China University of Science and Technology, 130 Meilong Rd., Shanghai, China, 200237 N1 - Accession Number: 2016-32155-001. Partial author list: First Author & Affiliation: Wang, Qiang; Department of Business Administration, School of Business, East China University of Science and Technology, Shanghai, China. Release Date: 20160630. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Language: English. Major Descriptor: No terms assigned. Classification: Industrial & Organizational Psychology (3600). Publication History: Accepted Date: Jun 14, 2016; First Submitted Date: Jan 4, 2016. Copyright Statement: Springer Science+Business Media Dordrecht. 2016. AB - This study examines the mediating role of rumination, state anger, and blame attribution, and the moderating role of trait forgiveness in the relationship between workplace harassment intensity and revenge among employed students at a medium-sized Midwestern U.S. university (N = 310) and full-time employees from various industries in Shanghai, China (N = 251). We tested the proposed model using techniques described by Hayes (Introduction to mediation, moderation, and conditional process analysis, The Guilford Press, New York, 2013). Results within both samples suggested that workplace harassment intensity is positively associated with both major and minor revenge. Results of multiple mediation tests showed that state anger and blame attribution mediated the relationships between workplace harassment intensity and both types of revenge behavior. Furthermore, trait forgiveness moderated the relationship between blame attribution and major revenge. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Anger KW - Blame attribution KW - Forgiveness KW - Revenge KW - Rumination KW - Workplace harassment KW - 2016 KW - No terms assigned KW - 2016 DO - 10.1007/s10551-016-3243-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-32155-001&site=ehost-live&scope=site UR - kwanhokwong@163.com UR - gene.alarcon@wright.edu UR - tianqitao2013@163.com UR - nathan.bowling@wright.edu UR - talenttree@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Ard, Shaun G. AU - Shuman, Nicholas S. AU - Martinez Jr., Oscar AU - Brown, Steven A. AU - Sawyer, Jordan C. AU - Viggiano, Albert A. T1 - Reactivity from excited state 4FeO+ + CO sampled through reaction of ground state 4FeCO+ + N2O. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2016/06/21/ VL - 144 IS - 23 M3 - Article SP - 1 EP - 6 SN - 00219606 AB - The kinetics of the FeCO+ + N2O reaction have been studied at thermal energies (300-600 K) using a variable temperature selected ion flow tube apparatus. Rate constants and product branching fractions are reported. The reaction is modestly inefficient, proceeding with a rate constant of 6.2 ? 10-11 cm³ s-1 at 300 K, with a small negative temperature dependence, declining to 4.4 ? 10-11 cm³ s-1 at 600 K. Both Fe+ and FeO+ products are observed, with a constant branching ratio of approximately 40:60 at all temperatures. Calculation of the stationary points along the reaction coordinate shows that only the ground state quartet surface is initially sampled resulting in N2 elimination; a submerged barrier along this portion of the surface dictates the magnitude and temperature dependence of the total rate constant. The product branching fractions are determined by the behavior of the remaining 4OFeCO+ fragment, and this behavior is compared to that found in the reaction of FeO+ + CO, which initially forms 6OFeCO+. Thermodynamic and kinetic arguments are used to show that the spin-forbidden surface crossing in this region is efficient, proceeding with an average rate constant of greater than 1012 s-1. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REACTIVITY (Chemistry) KW - EXCITED state chemistry KW - CARBON monoxide KW - GROUND state (Quantum mechanics) KW - CHEMICAL reactions N1 - Accession Number: 116392394; Ard, Shaun G. 1 Shuman, Nicholas S. 1 Martinez Jr., Oscar 1 Brown, Steven A. 1 Sawyer, Jordan C. 1 Viggiano, Albert A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA; Source Info: 2016, Vol. 144 Issue 23, p1; Subject Term: REACTIVITY (Chemistry); Subject Term: EXCITED state chemistry; Subject Term: CARBON monoxide; Subject Term: GROUND state (Quantum mechanics); Subject Term: CHEMICAL reactions; Number of Pages: 6p; Illustrations: 2 Diagrams, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.4953553 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116392394&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Musinski, William D. AU - McDowell, David L. T1 - Simulating the effect of grain boundaries on microstructurally small fatigue crack growth from a focused ion beam notch through a three-dimensional array of grains. JO - Acta Materialia JF - Acta Materialia Y1 - 2016/06/15/ VL - 112 M3 - Article SP - 20 EP - 39 SN - 13596454 AB - Microstructurally small crack (MSC) growth strongly depends on local microstructure and often displays oscillatory character in terms of crack growth rate (da/dN) as a function of the conventional stress intensity range due to crack tip/grain boundary interactions of MSCs. A fatigue indicator parameter (FIP)-based MSC growth model is presented for high temperature MSC growth in polycrystalline Ni-base superalloy IN100 that takes into account crack tip/grain boundary interaction. An expression for FIP evolution is evoked based on a sequence of finite element simulations for stationary cracks. The MSC growth model was fit to experiments within the context of a simple 1D crack growth model and then applied to model 3D crack growth from a simulated focused ion beam (FIB) notch. Simulations showed that the MSC growth rate became less oscillatory as the MSC front sampled more grains, and eventually converged to the LEFM response with further crack extension. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL grain boundaries KW - FATIGUE crack growth KW - HEAT resistant alloys KW - SIMULATION methods & models KW - MICROSTRUCTURE KW - FOCUSED ion beams KW - STRESS intensity factors (Fracture mechanics) KW - Crystal plasticity KW - IN100 KW - Microstructurally small crack KW - Ni-base superalloys N1 - Accession Number: 115438531; Musinski, William D. 1; Email Address: william.musinski.1@us.af.mil McDowell, David L. 2,3; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405, USA 3: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, USA; Source Info: Jun2016, Vol. 112, p20; Subject Term: CRYSTAL grain boundaries; Subject Term: FATIGUE crack growth; Subject Term: HEAT resistant alloys; Subject Term: SIMULATION methods & models; Subject Term: MICROSTRUCTURE; Subject Term: FOCUSED ion beams; Subject Term: STRESS intensity factors (Fracture mechanics); Author-Supplied Keyword: Crystal plasticity; Author-Supplied Keyword: IN100; Author-Supplied Keyword: Microstructurally small crack; Author-Supplied Keyword: Ni-base superalloys; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 20p; Document Type: Article L3 - 10.1016/j.actamat.2016.04.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115438531&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Unke, Oliver T. AU - Castro-Palacio, Juan Carlos AU - Bemish, Raymond J. AU - Meuwly, Markus T1 - Collision-induced rotational excitation in N+2(2Σg+, v = 0)-Ar: Comparison of computations and experiment. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2016/06/14/ VL - 144 IS - 22 M3 - Article SP - 224307-1 EP - 224307-8 SN - 00219606 AB - The collisional dynamics of N2+(2Σg+) cations with Ar atoms is studied using quasi-classical simulations. N2+-Ar is a proxy to study cooling of molecular ions and interesting in its own right for molecule-to-atom charge transfer reactions. An accurate potential energy surface (PES) is constructed from a reproducing kernel Hilbert space (RKHS) interpolation based on high-level ab initio data. The global PES including the asymptotics is fully treated within the realm of RKHS. From several ten thousand trajectories, the final state distribution of the rotational quantum number of N2+ after collision with Ar is determined. Contrary to the interpretation of previous experiments which indicate that up to 98% of collisions are elastic and conserve the quantum state, the present simulations find a considerably larger number of inelastic collisions which supports more recent findings. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUCLEAR rotational states KW - COMPUTATIONAL chemistry KW - QUASI-classical trajectory method KW - MOLECULAR beams KW - POTENTIAL energy surfaces KW - SCATTERING N1 - Accession Number: 116183943; Unke, Oliver T. 1 Castro-Palacio, Juan Carlos 1,2 Bemish, Raymond J. 3 Meuwly, Markus 1; Email Address: m.meuwly@unibas.ch; Affiliation: 1: Department of Chemistry, University of Basel, Klingelbergstrasse 80, CH-4056 Basel, Switzerland 2: Department of Earth Sciences & Engineering, Imperial College of London, Exhibition Road, London SW7 2AZ 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117, USA; Source Info: 2016, Vol. 144 Issue 22, p224307-1; Subject Term: NUCLEAR rotational states; Subject Term: COMPUTATIONAL chemistry; Subject Term: QUASI-classical trajectory method; Subject Term: MOLECULAR beams; Subject Term: POTENTIAL energy surfaces; Subject Term: SCATTERING; Number of Pages: 8p; Illustrations: 2 Diagrams, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1063/1.4951697 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116183943&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Allen, Kenneth W. AU - Abolmaali, Farzaneh AU - Duran, Joshua M. AU - Ariyawansa, Gamini AU - Limberopoulos, Nicholaos I. AU - Urbas, Augustine M. AU - Astratov, Vasily N. T1 - Increasing sensitivity and angle-of-view of mid-wave infrared detectors by integration with dielectric microspheres. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2016/06/13/ VL - 108 IS - 24 M3 - Article SP - 1 EP - 5 SN - 00036951 AB - We observed up to 100 times enhancement of sensitivity of mid-wave infrared photodetectors in the 2-5 µm range by using photonic jets produced by sapphire, polystyrene, and soda-lime glass microspheres with diameters in the 90-300 µm range. By finite-difference time-domain (FDTD) method for modeling, we gain insight into the role of the microspheres refractive index, size, and alignment with respect to the detector mesa. A combination of enhanced sensitivity with angle-of-view (AOV) up to 20° is demonstrated for individual photodetectors. It is proposed that integration with microspheres can be scaled up for large focal plane arrays, which should provide maximal light collection efficiencies with wide AOVs, a combination of properties highly attractive for imaging applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTODETECTORS KW - RESEARCH KW - MICROSPHERES KW - FINITE difference time domain method KW - REFRACTIVE index KW - FOCAL plane arrays sensors N1 - Accession Number: 116280943; Allen, Kenneth W. 1,2,3,4; Email Address: kenneth.allen@gtri.gatech.edu Abolmaali, Farzaneh 1 Duran, Joshua M. 2 Ariyawansa, Gamini 2 Limberopoulos, Nicholaos I. 2 Urbas, Augustine M. 5 Astratov, Vasily N. 1,2,3; Email Address: astratov@uncc.edu; Affiliation: 1: Department of Physics and Optical Science, Center for Optoelectronics and Optical Communications, University of North Carolina at Charlotte, Charlotte, North Carolina 28223-0001, USA 2: Air Force Research Laboratory, Sensors Directorate, Wright Patterson AFB, Ohio 45433, USA 3: UES, Dayton, Ohio 45433, USA 4: Advanced Concepts Laboratory, Georgia Tech Research Institute 5: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 2016, Vol. 108 Issue 24, p1; Subject Term: PHOTODETECTORS; Subject Term: RESEARCH; Subject Term: MICROSPHERES; Subject Term: FINITE difference time domain method; Subject Term: REFRACTIVE index; Subject Term: FOCAL plane arrays sensors; Number of Pages: 5p; Illustrations: 3 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.4954190 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116280943&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Xufei Wu AU - Varshney, Vikas AU - Jonghoon Lee AU - Teng Zhang AU - Wohlwend, Jennifer L. AU - Roy, Ajit K. AU - Tengfei Luo T1 - Hydrogenation of Penta-Graphene Leads to Unexpected Large Improvement in Thermal Conductivity. JO - Nano Letters JF - Nano Letters Y1 - 2016/06/08/ VL - 16 IS - 6 M3 - Article SP - 3925 EP - 3935 SN - 15306984 AB - Penta-graphene (PG) has been identified as a novel two-dimensional (2D) material with an intrinsic bandgap, which makes it especially promising for electronics applications. In this work, we use first-principles lattice dynamics and iterative solution of the phonon Boltzmann transport equation (BTE) to determine the thermal conductivity of PG and its more stable derivative, hydrogenated penta-graphene (HPG). As a comparison, we also studied the effect of hydrogenation on graphene thermal conductivity. In contrast to hydrogenation of graphene, which leads to a dramatic decrease in thermal conductivity, HPG shows a notable increase in thermal conductivity, which is much higher than that of PG. Considering the necessity of using the same thickness when comparing thermal conductivity values of different 2D materials, hydrogenation leads to a 63% reduction in thermal conductivity for graphene, while it results in a 76% increase for PG. The high thermal conductivity of HPG makes it more thermally conductive than most other semiconducting 2D materials, such as the transition metal chalcogenides. Our detailed analyses show that the primary reason for the counterintuitive hydrogenation-induced thermal conductivity enhancement is the weaker bond anharmonicity in HPG than PG. This leads to weaker phonon scattering after hydrogenation, despite the increase in the phonon scattering phase space. The high thermal conductivity of HPG may inspire intensive research around HPG and other derivatives of PG as potential materials for future nanoelectronic devices. The fundamental physics understood from this study may open up a new strategy to engineer thermal transport properties of other 2D materials by controlling bond anharmonicity via functionalization. [ABSTRACT FROM AUTHOR] AB - Copyright of Nano Letters is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROGENATION KW - GRAPHENE KW - THERMAL conductivity KW - ENERGY gaps (Physics) KW - LATTICE dynamics KW - BOLTZMANN'S equation KW - PHONONS N1 - Accession Number: 116228052; Xufei Wu 1 Varshney, Vikas 2,3 Jonghoon Lee 2,3 Teng Zhang 1 Wohlwend, Jennifer L. 2,3 Roy, Ajit K. 2 Tengfei Luo 1,4; Email Address: tluo@nd.edu; Affiliation: 1: Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46530, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, United States 3: Universal Technology Corporation, Dayton, Ohio 45342, United States 4: Center for Sustainable Energy at Notre Dame, Notre Dame, Indiana 46530, United States; Source Info: Jun2016, Vol. 16 Issue 6, p3925; Subject Term: HYDROGENATION; Subject Term: GRAPHENE; Subject Term: THERMAL conductivity; Subject Term: ENERGY gaps (Physics); Subject Term: LATTICE dynamics; Subject Term: BOLTZMANN'S equation; Subject Term: PHONONS; Number of Pages: 11p; Document Type: Article L3 - 10.1021/acs.nanolett.6b01536 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116228052&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Clark, Genevieve AU - Schaibley, John R. AU - Ross, Jason AU - Takashi Taniguchi AU - Kenji Watanabe AU - Hendrickson, Joshua R. AU - Shin Mou AU - Wang Yao AU - Xiaodong Xu T1 - Single Defect Light-Emitting Diode in a van der Waals Heterostructure. JO - Nano Letters JF - Nano Letters Y1 - 2016/06/08/ VL - 16 IS - 6 M3 - Article SP - 3944 EP - 3948 SN - 15306984 AB - Single defects in monolayer WSe2 have been shown to be a new class of single photon emitters and have potential applications in quantum technologies. Whereas previous work relied on optical excitation of single defects in isolated WSe2 monolayers, in this work we demonstrate electrically driven single defect light emission by using both vertical and lateral van der Waals heterostructure devices. In both device geometries, we use few layer graphene as the source and drain and hexagonal boron nitride as the dielectric spacer layers for engineered tunneling contacts. In addition, the lateral devices utilize a split back gate design to realize an electrostatically defined p-i-n junction. At low current densities and low temperatures (~5 K), we observe narrow spectral lines in the electroluminescence (EL) whose properties are consistent with optically excited defect bound excitons. We show that the emission originates from spatially localized regions of the sample, and the EL spectrum from single defects has a doublet with the characteristic exchange splitting and linearly polarized selection rules. All are consistent with previously reported single photon-emitters in optical measurements. Our results pave the way for on-chip and electrically driven single photon sources in two-dimensional semiconductors for quantum technology applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Nano Letters is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHT emitting diodes KW - TUNGSTEN selenide KW - VAN der Waals forces KW - HETEROSTRUCTURES KW - SEMICONDUCTORS -- Defects KW - MONOMOLECULAR films KW - PHOTONS KW - GRAPHENE N1 - Accession Number: 116228054; Clark, Genevieve 1 Schaibley, John R. 2 Ross, Jason 1 Takashi Taniguchi 3 Kenji Watanabe 3 Hendrickson, Joshua R. 4 Shin Mou 5 Wang Yao 6 Xiaodong Xu 1,2; Email Address: xuxd@uw.edu; Affiliation: 1: Department of Material Science and Engineering, University of Washington, Seattle, Washington 98195, United States 2: Department of Physics, University of Washington, Seattle, Washington 98195, United States 3: Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan 4: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Ohio 45433, United States 5: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433, United States 6: Department of Physics and Center of Theoretical and Computational Physics, University of Hong Kong, Hong Kong, China; Source Info: Jun2016, Vol. 16 Issue 6, p3944; Subject Term: LIGHT emitting diodes; Subject Term: TUNGSTEN selenide; Subject Term: VAN der Waals forces; Subject Term: HETEROSTRUCTURES; Subject Term: SEMICONDUCTORS -- Defects; Subject Term: MONOMOLECULAR films; Subject Term: PHOTONS; Subject Term: GRAPHENE; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1021/acs.nanolett.6b01580 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116228054&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Uždavinys, T. K. AU - Marcinkevičius, S. AU - Leach, J. H. AU - Evans, K. R. AU - Look, D. C. T1 - Photoexcited carrier trapping and recombination at Fe centers in GaN. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2016/06/07/ VL - 119 IS - 21 M3 - Article SP - 215706-1 EP - 215706-8 SN - 00218979 AB - Fe doped GaN was studied by time-resolved photoluminescence (PL) spectroscopy. The shape of PL transients at different temperatures and excitation powers allowed discrimination between electron and hole capture to Fe3+ and Fe2+ centers, respectively. Analysis of the internal structure of Fe ions and intra-ion relaxation rates suggests that for high repetition rates of photoexciting laser pulses the electron and hole trapping takes place in the excited state rather than the ground state of Fe ions. Hence, the estimated electron and hole capture coefficients of 5.5×10-8 cm³/s and 1.8×10-8 cm³/s should be attributed to excited Fe3+ and Fe2+ states. The difference in electron capture rates determined for high (MHz) and low (Hz) (Fang et al., Appl. Phys. Lett. 107, 051901 (2015)) pulse repetition rates may be assigned to the different Fe states participating in the carrier capture. A weak temperature dependence of the electron trapping rate shows that the potential barrier for the multiphonon electron capture is small. A spectral feature observed at ~420 nm is assigned to the radiative recombination of an electron in the ground Fe2+ state and a bound hole. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOEXCITATION KW - RECOMBINATION (Chemistry) KW - PHOTOLUMINESCENCE KW - POTENTIAL barrier KW - LASER pulses KW - IRON ions KW - GALLIUM nitride N1 - Accession Number: 115973913; Uždavinys, T. K. 1 Marcinkevičius, S. 1,2; Email Address: sm@kth.se Leach, J. H. 3 Evans, K. R. 3 Look, D. C. 4,5,6; Affiliation: 1: Department of Materials and Nano Physics, KTH Royal Institute of Technology, Electrum 229, 16440 Kista, Sweden 2: Materials Department, University of California, Santa Barbara, California 93106, USA 3: Kyma Technologies Inc., 8829 Midway West Road, Raleigh, North Carolina 27617, USA 4: Semiconductor Research Center, Wright State University, Dayton, Ohio 45435, USA 5: Air Force Research Laboratory Sensors Directorate, Wright-Patterson AFB, Ohio 45433, USA 6: Wyle Laboratories, Inc., 2601 Mission Point Blvd., Dayton, Ohio 45431, USA; Source Info: 2016, Vol. 119 Issue 21, p215706-1; Subject Term: PHOTOEXCITATION; Subject Term: RECOMBINATION (Chemistry); Subject Term: PHOTOLUMINESCENCE; Subject Term: POTENTIAL barrier; Subject Term: LASER pulses; Subject Term: IRON ions; Subject Term: GALLIUM nitride; Number of Pages: 8p; Illustrations: 1 Diagram, 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1063/1.4953219 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115973913&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gao, Y. AU - Wang, X. AU - Xie, L. AU - Hu, Z. AU - Lin, H. AU - Zhou, Z. AU - Nan, T. AU - Yang, X. AU - Howe, B. M. AU - Jones, J. G. AU - Brown, G. J. AU - Sun, N. X. T1 - Giant electric field control of magnetism and narrow ferromagnetic resonance linewidth in FeCoSiB/Si/SiO2/PMN-PT multiferroic heterostructures. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2016/06/06/ VL - 108 IS - 23 M3 - Article SP - 232903-1 EP - 232903-5 SN - 00036951 AB - It has been challenging to achieve combined strong magnetoelectric coupling and narrow ferromagnetic resonance (FMR) linewidth in multiferroic heterostructures. Electric field induced large effective field of 175 Oe and narrow FMR linewidth of 40 Oe were observed in FeCoSiB/Si/SiO2/PMN-PT heterostructures with substrate clamping effect minimized through removing the Si substrate. As a comparison, FeCoSiB/PMN-PT heterostructures with FeCoSiB film directly deposited on PMN-PT showed a comparable voltage induced effective magnetic field but a significantly larger FMR linewidth of 283 Oe. These multiferroic heterostructures exhibiting combined giant magnetoelectric coupling and narrow ferromagnetic resonance linewidth offer great opportunities for integrated voltage tunable RF magnetic devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FERROMAGNETIC resonance KW - ELECTRIC fields KW - MAGNETOELECTRIC effect KW - MAGNETIC devices KW - SUBSTRATES (Materials science) N1 - Accession Number: 116093638; Gao, Y. 1 Wang, X. 1 Xie, L. 1 Hu, Z. 2 Lin, H. 1 Zhou, Z. 3 Nan, T. 1 Yang, X. 4 Howe, B. M. 2 Jones, J. G. 2 Brown, G. J. 2 Sun, N. X. 1; Email Address: n.sun@neu.edu; Affiliation: 1: Department of Electrical and Computer Engineering, Northeastern University, Boston, Massachusetts 02115, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, USA 3: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China 4: School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China; Source Info: 2016, Vol. 108 Issue 23, p232903-1; Subject Term: FERROMAGNETIC resonance; Subject Term: ELECTRIC fields; Subject Term: MAGNETOELECTRIC effect; Subject Term: MAGNETIC devices; Subject Term: SUBSTRATES (Materials science); Number of Pages: 5p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.4953456 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116093638&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morajkar, Rohan R. AU - Klomparens, Robin L. AU - Eagle, W. Ethan AU - Driscoll, James F. AU - Gamba, Mirko AU - Benek, John A. T1 - Relationship Between Intermittent Separation and Vortex Structure in a Three-Dimensional Shock/Boundary-Layer Interaction. JO - AIAA Journal JF - AIAA Journal Y1 - 2016/06// VL - 54 IS - 6 M3 - Article SP - 1862 EP - 1880 SN - 00011452 AB - The relationship between the three-dimensional vortex structures and flow-separation zones generated by a shock wave/boundary-layer interaction within a low-aspect-ratio duct was studied using stereoscopic particle imaging velocimetry measurements. In this configuration, the interaction of the incident shock with all walls was important in controlling the flowfield; the three interactions coupled to produce a strongly distorted flowfield. Conditional sampling was used to construct the local probability of reverse flow maps, and thus quantify the distribution of regions of intermittent separation on both bottom-walls and side-walls. The latter regions were found to be significantly larger and more likely to separate than the former. Thus, it was concluded that the sidewall and corner flow interactions dominate in this configuration. A triple decomposition of motion was used to construct a three-dimensional representation of the vortex features generated by the interaction. The results indicated that the flowfield was dominated by three vortex systems: 1) the vortex associated with the sidewall swept-shock interaction; 2) a complex, possibly branched, vortex pair induced on the bottom wall; and 3) a vortex pair induced by the flow at the corner, which coupled the two interactions. The role of the three vortex systems on the onset of flow separation was also explored and discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 115660244; Morajkar, Rohan R. 1 Klomparens, Robin L. 1 Eagle, W. Ethan 1 Driscoll, James F. 1 Gamba, Mirko 1 Benek, John A. 2; Affiliation: 1: University of Michigan, Ann Arbor, Michigan 48109 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jun2016, Vol. 54 Issue 6, p1862; Number of Pages: 19p; Document Type: Article L3 - 10.2514/1.J053905 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115660244&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jensen, Kevin L. AU - Shiffler, Donald A. AU - Harris, John R. AU - Petillo, John J. T1 - Schottky's conjecture, field emitters, and the point charge model. JO - AIP Advances JF - AIP Advances Y1 - 2016/06// VL - 6 IS - 6 M3 - Article SP - 065005-1 EP - 065005-6 SN - 21583226 AB - A Point Charge Model of conical field emitters, in which the emitter is defined by an equipotential surface of judiciously placed charges over a planar conductor, is used to confirm Schottky's conjecture that field enhancement factors are multiplicative for a small protrusion placed on top of a larger base structure. Importantly, it is shown that Schottky's conjecture for conical / ellipsoidal field emitters remains unexpectedly valid even when the dimensions of the protrusion begin to approach the dimensions of the base structure. The model is analytic and therefore the methodology is extensible to other configurations. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Advances is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIELD emitter arrays KW - ELECTRON field emission KW - ELECTRIC conductors N1 - Accession Number: 116601903; Jensen, Kevin L. 1; Email Address: kevin.jensen@nrl.navy.mil Shiffler, Donald A. 2 Harris, John R. 2 Petillo, John J. 3; Affiliation: 1: Code 6364, Naval Research Laboratory, Washington, DC 20375, USA 2: Air Force Research Laboratory / Directed Energy Directorate, Albuquerque, NM 87117, USA 3: Leidos, Billerica, Massachusetts 01821, USA; Source Info: 2016, Vol. 6 Issue 6, p065005-1; Subject Term: FIELD emitter arrays; Subject Term: ELECTRON field emission; Subject Term: ELECTRIC conductors; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.4953813 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116601903&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 116540838 T1 - The Decompensated Neonate in the First Week of Life. AU - Chapman, Silena C. Y1 - 2016/06// N1 - Accession Number: 116540838. Language: English. Entry Date: In Process. Revision Date: 20160705. Publication Type: Article. Journal Subset: Biomedical; USA. NLM UID: 100887300. SP - 134 EP - 139 JO - Clinical Pediatric Emergency Medicine JF - Clinical Pediatric Emergency Medicine JA - CLIN PEDIATR EMERG MED VL - 17 IS - 2 CY - Philadelphia, Pennsylvania PB - Elsevier Inc. SN - 1522-8401 AD - United States Air Force, Medical Corps, Division of Neonatology, US Naval Hospital Okinawa, 18th Medical Group, Kadena Air Base UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=116540838&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Carter, Campbell D. AU - Hammack, Stephen AU - Lee, Tonghun T1 - High-speed flamefront imaging in premixed turbulent flames using planar laser-induced fluorescence of the CH C−X band. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2016/06// VL - 168 M3 - Article SP - 66 EP - 74 SN - 00102180 AB - We describe efforts to develop kHz-rate or high-speed planar laser-induced fluorescence (PLIF) of the CH radical for application to premixed flames. The basic approach used here involves excitation and detection of the CH radial via the C 2 Σ + −X 2 Π ( v ′ = 0, v ″ = 0) band, which has transitions in the wavelength range λ ≈ 310–320 nm. Transitions in this band are generally stronger than those in the A−X and B−X bands of CH and the radiative lifetimes are shorter too. Thus, the C−X band should have advantages with regard to CH detectability in atmospheric flames, and we show that good CH-PLIF signal-to-noise and signal-to-background ratios can be attained at a 10-kHz interrogation rate and that the spatial resolution (of the CH layer) is reasonably good as well. Of course, strong OH lines, from the A 2 Σ + −X 2 Π (0,0) and (1,1) bands, lie nearby the CH C−X lines. While this can create some interference in the detection of CH, we demonstrate that OH lines can be avoided, if desired, or excited, if desired. Indeed, easy access to either CH or OH is a substantial benefit of the method outlined herein. Furthermore, we show that simultaneous imaging of CH and OH—using a single laser system and camera—is possible too. We demonstrate the utility of this approach for resolving the flamefront dynamics with 10-kHz measurements in a turbulent, premixed methane–air Bunsen flame: we see intrusion of flame and products into the reactant-zone, which appears to accelerate the consumption of the reactant core, and fingers of flame and reactants that extend into the product-zone and then pinch off and burn out. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMBUSTION kinetics KW - STATE variables (Thermodynamics) KW - PLANAR waveguides KW - PLANAR laser-induced fluorescence KW - CATHODE rays -- Properties KW - PHOTOLUMINESCENCE KW - CH PLIF KW - kHz diagnostics KW - Turbulent combustion N1 - Accession Number: 115437938; Carter, Campbell D. 1; Email Address: Campbell.carter@us.af.mil Hammack, Stephen 2 Lee, Tonghun 2; Affiliation: 1: U.S. Air Force Research Laboratory (AFRL/RQHF), 1950 Fifth Street, Wright-Patterson AFB, OH 45433, USA 2: Department of Mechanical Science and Engineering, University of Illinois, Urbana, IL 61801, USA; Source Info: Jun2016, Vol. 168, p66; Subject Term: COMBUSTION kinetics; Subject Term: STATE variables (Thermodynamics); Subject Term: PLANAR waveguides; Subject Term: PLANAR laser-induced fluorescence; Subject Term: CATHODE rays -- Properties; Subject Term: PHOTOLUMINESCENCE; Author-Supplied Keyword: CH PLIF; Author-Supplied Keyword: kHz diagnostics; Author-Supplied Keyword: Turbulent combustion; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.combustflame.2016.03.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115437938&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Richardson, Daniel R. AU - Jiang, Naibo AU - Blunck, David L. AU - Gord, James R. AU - Roy, Sukesh T1 - Characterization of inverse diffusion flames in vitiated cross flows via two-photon planar laser-induced fluorescence of CO and 2-D thermometry. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2016/06// VL - 168 M3 - Article SP - 270 EP - 285 SN - 00102180 AB - Two-photon, planar laser-induced fluorescence (PLIF) of carbon-monoxide (CO) and two-dimensional thermometry employing two-color, hydroxyl radical (OH) PLIF are used to characterize atmospheric-pressure inverse diffusion flames. These flames are important tools to aid the understanding of secondary reaction zones that may form in gas turbine engines when film-cooling air reacts with fuel-rich packets from the combustor. For the experiments performed in the present study, exhaust from a propane–air well-stirred reactor is channeled to a test section where three different film-cooling geometries are used to create inverse diffusion flames: (1) a single row of normal cooling holes, (2) a slot cut at an angle of 30° with respect to the wall, and (3) an 5 × 11 array of cooling holes. It is found that CO and H 2 concentrations of a few percent can lead to secondary reaction zones and that different cooling-hole geometries can produce dramatically different secondary reaction-zone shapes. These secondary reaction zone flames have Damköhler numbers greater than unity and are diffusion limited. The PLIF measurements show regions where CO is consumed, OH produced, and the temperature perturbed. For film-cooling flows that remain attached to the wall, the secondary reaction zone is also close to the wall and can cover a relatively long axial length. For film-cooling flows that separate from the wall, the secondary reaction zones protrude farther into the cross flow then quickly mix with the cross flow. By comparing the CO, OH, and temperature fields, three characteristic regions of flows with secondary reaction zones are identified: the injection region where cooling air displaces the vitiated cross flow, the secondary reaction zone region, and the mix-out region where all of the oxygen has been consumed and mixing with the vitiated cross flow controls the local composition and temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLANAR laser-induced fluorescence KW - HYDROXYL group KW - PHOTOLUMINESCENCE KW - CARBON monoxide KW - TEMPERATURE measurements KW - AUTOMOTIVE gas turbines KW - Film cooling KW - Inverse diffusion flames KW - Laser diagnostics KW - Two-photon CO-PLIF N1 - Accession Number: 115437944; Richardson, Daniel R. 1 Jiang, Naibo 1 Blunck, David L. 2 Gord, James R. 2; Email Address: james.gord@us.af.mil Roy, Sukesh 1; Email Address: roy.sukesh@gmail.com; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield St., Suite 301, Dayton, OH 45431, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Source Info: Jun2016, Vol. 168, p270; Subject Term: PLANAR laser-induced fluorescence; Subject Term: HYDROXYL group; Subject Term: PHOTOLUMINESCENCE; Subject Term: CARBON monoxide; Subject Term: TEMPERATURE measurements; Subject Term: AUTOMOTIVE gas turbines; Author-Supplied Keyword: Film cooling; Author-Supplied Keyword: Inverse diffusion flames; Author-Supplied Keyword: Laser diagnostics; Author-Supplied Keyword: Two-photon CO-PLIF; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.combustflame.2016.03.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115437944&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhang, Zhiping AU - Nowak, Michael J. AU - Wicks, Michael AU - Wu, Zhiqiang T1 - Bio-inspired RF steganography via linear chirp radar signals. JO - IEEE Communications Magazine JF - IEEE Communications Magazine Y1 - 2016/06// VL - 54 IS - 6 M3 - Article SP - 82 EP - 86 SN - 01636804 AB - The chirp signal is one of the first bio-inspired signals commonly used in RF applications where the term chirp is a reference to the chirping sound made by birds. It has since been recognized that birds communicate through such chirping sounds to attract other birds of the same species, to transmit an alarm for specific threats, and so on. However, birds of a different species, or sometime even birds in a different social group within a species, are unable to connect a specific meaning to certain calls - they will simply hear a bird chirping. Inspired by such, this article provides a tutorial on a novel RF steganography scheme to conceal digital communication in linear chirp radar signals. We first provide a review of the linear chirp signal and existing communication systems using chirp waveforms. Next we discuss how to implement the RF steganography and hide digitally modulated communication information inside a linear chirp radar signal to prevent an enemy from detecting the existence of such hidden information. A new modulation called reduced phase shift keying is employed to make the modulated chirp waveform almost identical to the unmodulated chirp signal. Furthermore, variable symbol durations are employed to eliminate cyclostationary features that might otherwise be exploited by an enemy to detect the existence of the hidden information. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Communications Magazine is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO frequency KW - CRYPTOGRAPHY KW - CHIRP modulation KW - RADAR signal processing KW - DIGITAL communications N1 - Accession Number: 116342829; Zhang, Zhiping 1 Nowak, Michael J. 2 Wicks, Michael 3 Wu, Zhiqiang 1; Affiliation: 1: Wright State University 2: Air Force Research Laboratory 3: University of Dayton; Source Info: Jun2016, Vol. 54 Issue 6, p82; Subject Term: RADIO frequency; Subject Term: CRYPTOGRAPHY; Subject Term: CHIRP modulation; Subject Term: RADAR signal processing; Subject Term: DIGITAL communications; Number of Pages: 5p; Document Type: Article L3 - 10.1109/MCOM.2016.7497771 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116342829&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Majumder, Uttam AU - Bell, Mark R. AU - Rangaswamy, Muralidhar T1 - Design and analysis of radar waveforms achieving transmit and receive orthogonality. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2016/06// VL - 52 IS - 3 M3 - Article SP - 1056 EP - 1066 SN - 00189251 AB - This paper presents the design and analysis of orthogonal, Doppler-tolerant waveforms for waveform agile radar (e.g. multiple-input multiple-output (MIMO) radar) applications. Previous work has given little consideration to the design of radar waveforms that remain orthogonal when they are received. Our research is focused on: 1) developing sets of waveforms that are orthogonal on both transmit and receive, and 2) ensuring that these waveforms are Doppler tolerant when properly processed. Our proposed solution achieves the above-mentioned goals by incorporating direct sequence spread spectrum (DSSS) coding techniques on linear frequency modulated (LFM) signals. We call this spread spectrum coded LFM (SSCL) signaling. Our transmitted LFM waveforms are rendered orthogonal with a unique spread spectrum (SS) code. At the receiver, the echo signal will be decoded using its spreading code. In this manner, transmitted orthogonal waveforms can be match filtered only with the intended received signals. From analytical expressions of the waveforms we have designed and from simulation results, we found that: 1) cross-ambiguity function (CAF) of two LFM SS coded (orthogonal) waveforms is small for all delays and Dopplers (i.e. transmit and receive signals satisfy near orthogonality constraint); 2) the length of the SS code determines the amount of interference suppression (i.e., complete orthogonal or near orthogonal of the received signal); 3) we can process the same received signal in two different ways; one method can provide LFM signal resolution and the other method can provide ultrahigh resolution; 4) biorthogonal codes can be used to reduce bandwidth when code length is large. Our proposed waveforms inherit multiple attributes (e.g. chirp diversity, code diversity, frequency diversity) of diverse waveforms. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVE analysis KW - DOPPLER radar KW - MIMO radar KW - ORTHOGONAL functions KW - DIRECT sequence spectrum spread (Telecommunications) KW - RADAR transmitters KW - Bandwidth KW - Doppler effect KW - Doppler radar KW - Signal resolution KW - Spread spectrum communication N1 - Accession Number: 116872266; Majumder, Uttam 1 Bell, Mark R. 2 Rangaswamy, Muralidhar 3; Affiliation: 1: Senior Member, IEEE, Air Force Research Laboratory, Information Directorate Rome, NY, USA 2: Fellow, IEEE Purdue University West Lafayette, IN, USA 3: Fellow, IEEE Air Force Research Laboratory Sensors Directorate Wright Patterson Air Force Base, OH, USA; Source Info: Jun2016, Vol. 52 Issue 3, p1056; Subject Term: WAVE analysis; Subject Term: DOPPLER radar; Subject Term: MIMO radar; Subject Term: ORTHOGONAL functions; Subject Term: DIRECT sequence spectrum spread (Telecommunications); Subject Term: RADAR transmitters; Author-Supplied Keyword: Bandwidth; Author-Supplied Keyword: Doppler effect; Author-Supplied Keyword: Doppler radar; Author-Supplied Keyword: Signal resolution; Author-Supplied Keyword: Spread spectrum communication; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TAES.2016.140248 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116872266&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Benson, Stephen AU - Chen, Chien-in H. AU - Lin, David M. AU - Liou, Lihyeh L. T1 - Digital linear chirp receiver for high chirp rates with high resolution time-of-arrival and time-of-departure estimation. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2016/06// VL - 52 IS - 3 M3 - Article SP - 1146 EP - 1154 SN - 00189251 AB - The use of chirp signals in modern radar and ranging systems have numerous benefits. They are extensively used to improve signal-to-noise ratio and range resolution. The performance capabilities of these signals are directly related to their time-bandwidth product, i.e., the duration and bandwidth of the pulse. Ultra-wideband chirp signals are further desirable because they span a large bandwidth, making them resistant to narrowband environmental interference. The accurate detection and measurement of high chirp signals is difficult due to the necessity of a high-sampling analog-digital converter, a target measurement platform with high computational power, and a time-of-arrival (TOA) estimator with high temporal resolution. The difficulty of the problem is further compounded with the requirement that no a priori knowledge of the signal, noise, or operating environment is known. This paper presents a practical approach and implementation of a high linear chirp rate receiver and TOA estimator pair capable of detecting and measuring stationary radio frequency pulses as well as linear chirp rates up to 1.18 GHz in 400 ns. The high-resolution TOA algorithm and linear chirp receiver have been prototyped, synthesized, and placed and routed for a Virtex 6 SX475 FPGA. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHIRP modulation KW - CHIRPLET transform (Signal processing) KW - TIME-of-arrival estimation KW - SIGNAL-to-noise ratio KW - ULTRA-wideband radar KW - ANALOG-to-digital converters KW - RADIO frequency KW - Chirp KW - Delays KW - Receivers KW - Sea measurements KW - Signal resolution KW - Time-frequency analysis N1 - Accession Number: 116872273; Benson, Stephen 1 Chen, Chien-in H. 1 Lin, David M. 2 Liou, Lihyeh L. 2; Affiliation: 1: Wright State University Dayton, OH, USA 2: Air Force Research Laboratory Wright Patterson AFB, OH, USA; Source Info: Jun2016, Vol. 52 Issue 3, p1146; Subject Term: CHIRP modulation; Subject Term: CHIRPLET transform (Signal processing); Subject Term: TIME-of-arrival estimation; Subject Term: SIGNAL-to-noise ratio; Subject Term: ULTRA-wideband radar; Subject Term: ANALOG-to-digital converters; Subject Term: RADIO frequency; Author-Supplied Keyword: Chirp; Author-Supplied Keyword: Delays; Author-Supplied Keyword: Receivers; Author-Supplied Keyword: Sea measurements; Author-Supplied Keyword: Signal resolution; Author-Supplied Keyword: Time-frequency analysis; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TAES.2016.140656 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116872273&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cao, Yongcan AU - Ren, Wei AU - Casbeer, David W. AU - Schumacher, Corey T1 - Finite-Time Connectivity-Preserving Consensus of Networked Nonlinear Agents With Unknown Lipschitz Terms. JO - IEEE Transactions on Automatic Control JF - IEEE Transactions on Automatic Control Y1 - 2016/06// VL - 61 IS - 6 M3 - Article SP - 1700 EP - 1705 SN - 00189286 AB - This technical note studies finite-time consensus problem for a team of networked nonlinear agents with unknown Lipschitz terms under communication constraints, where each agent has a limited sensing range. Because the induced interaction graph is typically state-dependent and dynamic, we propose a distributed nonlinear consensus algorithm that is capable of preserving the initial interaction patterns. By using tools from nonsmooth analysis, sufficient conditions are obtained such that finite-time consensus can be reached. An upper bound of the convergence time is derived via a two-step analysis. The validity of the theoretical result is shown by one simulation example. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Automatic Control is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIPSCHITZ spaces KW - NONLINEAR systems KW - ALGORITHMS KW - STOCHASTIC convergence KW - STOCHASTIC analysis KW - SIMULATION methods & models KW - Algorithm design and analysis KW - Consensus KW - Convergence KW - Cooperative Control KW - Eigenvalues and eigenfunctions KW - Laplace equations KW - Limited Sensing Range KW - Lipschitz Nonlinear Dynamics KW - Nonlinear dynamical systems KW - Sensors KW - Symmetric matrices N1 - Accession Number: 115795772; Cao, Yongcan 1 Ren, Wei 2 Casbeer, David W. 3 Schumacher, Corey 3; Affiliation: 1: Department of Electrical and Computer Engineering, University of Texas, San Antonio, TX, USA 2: Department of Electrical and Computer Engineering, University of California, Riverside, CA, USA 3: Control Science Center of Excellence, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Jun2016, Vol. 61 Issue 6, p1700; Subject Term: LIPSCHITZ spaces; Subject Term: NONLINEAR systems; Subject Term: ALGORITHMS; Subject Term: STOCHASTIC convergence; Subject Term: STOCHASTIC analysis; Subject Term: SIMULATION methods & models; Author-Supplied Keyword: Algorithm design and analysis; Author-Supplied Keyword: Consensus; Author-Supplied Keyword: Convergence; Author-Supplied Keyword: Cooperative Control; Author-Supplied Keyword: Eigenvalues and eigenfunctions; Author-Supplied Keyword: Laplace equations; Author-Supplied Keyword: Limited Sensing Range; Author-Supplied Keyword: Lipschitz Nonlinear Dynamics; Author-Supplied Keyword: Nonlinear dynamical systems; Author-Supplied Keyword: Sensors; Author-Supplied Keyword: Symmetric matrices; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TAC.2015.2479926 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115795772&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chang, Wenmo AU - Ding, Kung-Hau AU - Tsang, Leung AU - Xu, Xiaolan T1 - Microwave Scattering and Medium Characterization for Terrestrial Snow With QCA–Mie and Bicontinuous Models: Comparison Studies. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2016/06// VL - 54 IS - 6 M3 - Article SP - 3637 EP - 3648 SN - 01962892 AB - Comparison studies are made between the QCA–Mie model and the bicontinuous model in microwave scattering from terrestrial snow. Both the scattering properties and the medium characterization are compared. For QCA, we use the multisize and the sticky particle models. For the bicontinuous model, we use the probability distribution function for the wavenumber. We compare the scattering rate and the angular distribution of scattering using the mean cosine of scattering and show that the two models have similar properties. In medium characterization, we use the pair distribution functions used in QCA to derive the correlation functions. We show that both the Percus–Yevick pair functions and the bicontinuous model have tails in the correlation functions that are distinctly different from the traditional exponential correlation functions. The methodologies of using ground measurements of grain size distributions and correlation functions to obtain model parameters are addressed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVE scattering KW - DATA analysis KW - DISTRIBUTION (Probability theory) KW - PARTICLE size distribution KW - MATHEMATICAL models KW - Bicontinuous model KW - Computational modeling KW - Correlation KW - Distribution functions KW - Mathematical model KW - microwave remote sensing KW - Microwave theory and techniques KW - quasi-crystalline approximation (QCA) model KW - Scattering KW - Snow KW - terrestrial snow N1 - Accession Number: 115133629; Chang, Wenmo 1 Ding, Kung-Hau 2 Tsang, Leung 3 Xu, Xiaolan 4; Affiliation: 1: Department of Electrical Engineering, University of Washington, Seattle, WA, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, USA 3: Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA 4: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA; Source Info: Jun2016, Vol. 54 Issue 6, p3637; Subject Term: MICROWAVE scattering; Subject Term: DATA analysis; Subject Term: DISTRIBUTION (Probability theory); Subject Term: PARTICLE size distribution; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: Bicontinuous model; Author-Supplied Keyword: Computational modeling; Author-Supplied Keyword: Correlation; Author-Supplied Keyword: Distribution functions; Author-Supplied Keyword: Mathematical model; Author-Supplied Keyword: microwave remote sensing; Author-Supplied Keyword: Microwave theory and techniques; Author-Supplied Keyword: quasi-crystalline approximation (QCA) model; Author-Supplied Keyword: Scattering; Author-Supplied Keyword: Snow; Author-Supplied Keyword: terrestrial snow; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TGRS.2016.2522438 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115133629&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - AU - Zalewski, Janusz1 AU - Buckley, Ingrid A.1 AU - Czejdo, Bogdan2 AU - Drager, Steven3 AU - Kornecki, Andrew J.4 AU - Subramanian, Nary5 T1 - A Framework for Measuring Security as a System Property in Cyberphysical Systems. JO - Information (2078-2489) JF - Information (2078-2489) J1 - Information (2078-2489) PY - 2016/06// Y1 - 2016/06// VL - 7 IS - 2 CP - 2 M3 - Article SP - 1 EP - 33 SN - 20782489 AB - This paper addresses the challenge of measuring security, understood as a system property, of cyberphysical systems, in the category of similar properties, such as safety and reliability. First, it attempts to define precisely what security, as a system property, really is. Then, an application context is presented, in terms of an attack surface in cyberphysical systems. Contemporary approaches related to the principles of measuring software properties are also discussed, with emphasis on building models. These concepts are illustrated in several case studies, based on previous work of the authors, to conduct experimental security measurements. [ABSTRACT FROM AUTHOR] KW - Computer security KW - Information storage & retrieval systems -- Security measures KW - Software measurement KW - computer security KW - information security KW - security assessment KW - software metrics N1 - Accession Number: 116698633; Authors: Zalewski, Janusz 1; Buckley, Ingrid A. 1; Czejdo, Bogdan 2; Drager, Steven 3; Kornecki, Andrew J. 4; Subramanian, Nary 5; Affiliations: 1: Department of Software Engineering, Florida Gulf Coast University, Ft. Myers, FL 33965, USA; 2: Department of Math & Computer Science, Fayetteville State University, Fayetteville, NC 28301, USA; 3: Air Force Research Laboratory, Rome, NY 13441, USA; 4: Department of Electrical, Computer, Software, and Systems Engineering, Embry-Riddle Aeronautical University, Daytona Beach, FL 32114, USA; 5: Department of Computer Science, University of Texas at Tyler, Tyler, TX 75799, USA; Subject: Computer security; Subject: Information storage & retrieval systems -- Security measures; Subject: Software measurement; Author-Supplied Keyword: computer security; Author-Supplied Keyword: information security; Author-Supplied Keyword: security assessment; Author-Supplied Keyword: software metrics; Number of Pages: 33p; Record Type: Article L3 - 10.3390/info7020033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=116698633&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - Wiens, Justin P. AU - Miller, Thomas M. AU - Shuman, Nicholas S. AU - Ard, Shaun G. AU - Viggiano, Albert A. T1 - Time-of-flight detection coupled to a flowing afterglow: Improvements and characterization. JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2016/06// VL - 403 M3 - Article SP - 27 EP - 31 SN - 13873806 AB - An orthogonally accelerated time-of-flight mass spectrometer has been added to a flowing afterglow–Langmuir probe apparatus, coupled by a rectilinear ion guide. The TOF has improved the signal-to-noise (S/N) ratio by about an order of magnitude over a quadrupole mass filter/electron multiplier detection typical for flow tube instruments of this type and used previously. The improved S/N reduces our data acquisition time commensurately. Additionally, mass discrimination is low enough that it is minimal for ions heavier than ∼10 amu. The lack of mass discrimination not only reduces experiment time but also leads to greater accuracy in the measurement of reaction rate coefficients. Finally, simultaneous detection of both heavy and light ions is improved. H + can now be detected and WF 5 + isotopes can be separated without reducing sensitivity. We have found that discrimination against low-mass ions can occur when certain electron-attaching reactants are used (e.g. SF 6 ), and possibly due to radicals formed after certain other reactants attach electrons. Evidence points to adsorption of these species on surfaces of the ion guide immediately behind the flowing afterglow sampling orifice, which separates the flow tube and TOF region. The adsorption follows a Langmuir isotherm profile and is greatly reduced by heating the gas in the flow tube. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AFTERGLOW (Physics) KW - TIME-of-flight mass spectrometry KW - ACCELERATION (Mechanics) KW - SIGNAL-to-noise ratio KW - QUADRUPOLES KW - PHOTOMULTIPLIERS KW - Flowing afterglow KW - Ions KW - Mass spectrometry KW - Plasma KW - Time-of-flight N1 - Accession Number: 115596820; Wiens, Justin P. 1; Email Address: justin.wiens.1.ctr@us.af.mil Miller, Thomas M. 1 Shuman, Nicholas S. 1 Ard, Shaun G. 1 Viggiano, Albert A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, NM 87117, USA; Source Info: Jun2016, Vol. 403, p27; Subject Term: AFTERGLOW (Physics); Subject Term: TIME-of-flight mass spectrometry; Subject Term: ACCELERATION (Mechanics); Subject Term: SIGNAL-to-noise ratio; Subject Term: QUADRUPOLES; Subject Term: PHOTOMULTIPLIERS; Author-Supplied Keyword: Flowing afterglow; Author-Supplied Keyword: Ions; Author-Supplied Keyword: Mass spectrometry; Author-Supplied Keyword: Plasma; Author-Supplied Keyword: Time-of-flight; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.ijms.2016.03.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115596820&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fitch, Kyle E. AU - Hutchison, Keith D. AU - Bartlett, Kevin S. AU - Wacker, Robert S. AU - Gross, Kevin C. T1 - Assessing VIIRS cloud base height products with data collected at the Department of Energy Atmospheric Radiation Measurement sites. JO - International Journal of Remote Sensing JF - International Journal of Remote Sensing Y1 - 2016/06// VL - 37 IS - 11 M3 - Article SP - 2604 EP - 2620 SN - 01431161 AB - A system-level analysis has been completed to assess the accuracy of cloud base height (CBH) products of lower-altitude water clouds created from Visible Infrared Imaging Radiometer Suite (VIIRS) data collected by the National Aeronautics and Space Administration (NASA) Suomi National Polar-orbiting Partnership (S-NPP) and the National Oceanic and Atmospheric Administration (NOAA) Joint Polar Satellite System (JPSS). While the analysis focused on the CBH products, it necessarily included an assessment of other key, upstream VIIRS cloud products, including VIIRS cloud top height (CTH), VIIRS cloud optical thickness (COT), and VIIRS cloud effective particle size (EPS). The COT and EPS products are used to derive a geometric cloud thickness, which is then subtracted from the CTH product to generate the CBH product. Thus, a system-level analysis is critical to establishing the detailed algorithm error budget needed to identify the major sources of errors in the CBH product and help focus future research efforts to improve this important cloud product. As a consequence, ground-based data collected at the US Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) sites became most useful for conducting this system-level analysis. Therefore, match-up data sets were created between VIIRS cloud products and DOE ARM site data sets from June 2013 to October 2015, and while the primary focus was on the highest-quality data at the Lamont, OK ARM site, data were analysed from a total of four ARM sites. The initial results showed the errors in the VIIRS CBH products, compared to the ARM site data sets, to be large and highly variable; however, errors in VIIRS COT and the derived VIIRS cloud geometric thickness were much smaller. Consequently, the VIIRS CTH products were replaced with the ARM CTH products, which substantially reduced the variability and errors in the VIIRS CBH products. It is concluded that the performance of the VIIRS CBH products is most strongly correlated with errors in the VIIRS CTH products, while errors in COT and geometric cloud thicknesses are acceptable. Thus, future research is needed to reduce the errors in the VIIRS CTH products in order to ensure the VIIRS CBH products are suitable for civilian and military aerodrome operations. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Remote Sensing is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIOMETERS KW - ATMOSPHERIC layers KW - ATMOSPHERIC radiation KW - GEOMETRIC analysis KW - VISSR atmospheric sounder KW - ATMOSPHERIC radioactivity N1 - Accession Number: 115587346; Fitch, Kyle E. 1; Email Address: kyle.fitch@us.af.mil Hutchison, Keith D. 2 Bartlett, Kevin S. 1 Wacker, Robert S. 3 Gross, Kevin C. 1; Affiliation: 1: Department of Engineering Physics, Air Force Institute of Technology, Wright-Patterson AFB, OH, USA 2: Center for Space Research (CSR), University of Texas, Austin, TX, USA 3: Department of Physics, United States Air Force Academy, Colorado Springs, CO, USA; Source Info: Jun2016, Vol. 37 Issue 11, p2604; Subject Term: RADIOMETERS; Subject Term: ATMOSPHERIC layers; Subject Term: ATMOSPHERIC radiation; Subject Term: GEOMETRIC analysis; Subject Term: VISSR atmospheric sounder; Subject Term: ATMOSPHERIC radioactivity; Number of Pages: 17p; Illustrations: 1 Diagram, 13 Charts; Document Type: Article L3 - 10.1080/01431161.2016.1182665 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115587346&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jones, Tiffany AU - Gonzalez, Leonel P. AU - Guha, Shekhar AU - Sheng, Qin T1 - A continuing exploration of a decomposed compact method for highly oscillatory wave problems. JO - Journal of Computational & Applied Mathematics JF - Journal of Computational & Applied Mathematics Y1 - 2016/06// VL - 299 M3 - Article SP - 207 EP - 220 SN - 03770427 AB - This paper concerns a highly effective and decomposed compact scheme for solving a highly oscillatory paraxial Helmholtz problem in radially symmetric fields. The decomposition is utilized in the transverse direction to eliminate the singularity of the differential equation in polar coordinates. Numerical stability of the splitting scheme is investigated. It is shown that the numerical method introduced is not only highly accurate and efficient due to its straightforward algorithmic structure, but also stable under reasonable constraints for practical applications. Computational examples are presented to illustrate our conclusions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Computational & Applied Mathematics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DECOMPOSITION (Mathematics) KW - PROBLEM solving KW - SYMMETRY (Mathematics) KW - STABILITY theory KW - WAVE equation -- Numerical solutions KW - 65M06 KW - 65M12 KW - 65M50 KW - 65Z05 KW - 78A15 KW - 78M20 KW - Compact algorithm KW - Decompositions KW - High oscillations KW - Paraxial wave equation KW - Radial symmetry KW - Stability N1 - Accession Number: 112550507; Jones, Tiffany 1; Email Address: Tiffany_Jones1@baylor.edu Gonzalez, Leonel P. 2 Guha, Shekhar 2 Sheng, Qin 1; Affiliation: 1: Department of Mathematics and Center for Astrophysics, Space Physics and Engineering Research, Baylor University, One Bear Place, Waco, TX 76798-7328, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright–Patterson Air Force Base, OH 45433, USA; Source Info: Jun2016, Vol. 299, p207; Subject Term: DECOMPOSITION (Mathematics); Subject Term: PROBLEM solving; Subject Term: SYMMETRY (Mathematics); Subject Term: STABILITY theory; Subject Term: WAVE equation -- Numerical solutions; Author-Supplied Keyword: 65M06; Author-Supplied Keyword: 65M12; Author-Supplied Keyword: 65M50; Author-Supplied Keyword: 65Z05; Author-Supplied Keyword: 78A15; Author-Supplied Keyword: 78M20; Author-Supplied Keyword: Compact algorithm; Author-Supplied Keyword: Decompositions; Author-Supplied Keyword: High oscillations; Author-Supplied Keyword: Paraxial wave equation; Author-Supplied Keyword: Radial symmetry; Author-Supplied Keyword: Stability; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.cam.2015.11.044 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112550507&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Atahary, Tanvir AU - Taha, Tarek AU - Douglass, Scott T1 - Parallelized mining of domain knowledge on GPGPU and Xeon Phi clusters. JO - Journal of Supercomputing JF - Journal of Supercomputing Y1 - 2016/06// VL - 72 IS - 6 M3 - Article SP - 2132 EP - 2156 SN - 09208542 AB - The cognitively enhanced complex event processing (CECEP) architecture being developed at the US Air Force is an autonomous decision support tool that reasons and learns like humans and enables enhanced agent-based decision making. It has applications in both military and civilian domains. One of the most computationally challenging aspects of CECEP is mining domain knowledge captured in cognitive domain ontologies (CDOs). Real-time agents require massively linked knowledge databases to be searched using a large set of constraints to generate intelligent decisions in run time. This study examines how to parallelize and accelerate the CDO knowledge mining algorithm by converting it into a constraint network that can be solved using a parallelized generate and test exhaustive depth first search algorithm. Our results show that 1 GPGPU can provide speed-ups of 100 times over a Xeon CPU core and almost 8 times over a Xeon Phi processor for the search algorithm. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Supercomputing is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DATA mining KW - GRAPHICS processing units (Computers) KW - KNOWLEDGE management KW - COMPUTER architecture KW - DECISION support systems KW - CSP acceleration KW - GPGPU KW - Knowledge mining KW - Parallel depth first search algorithm (DFS) KW - XEON Phi N1 - Accession Number: 115560622; Atahary, Tanvir 1; Email Address: ataharyt1@udayton.edu Taha, Tarek 1; Email Address: tarek.taha@udayton.edu Douglass, Scott 2; Email Address: scott.douglass@wpafb.af.mil; Affiliation: 1: Department of Electrical and Computer Engineering, University of Dayton, Dayton 45469 USA 2: Air Force Research Laboratory, Wright-Patterson AFB, 711 Human Performance Wing Dayton 45433-7955 USA; Source Info: Jun2016, Vol. 72 Issue 6, p2132; Subject Term: DATA mining; Subject Term: GRAPHICS processing units (Computers); Subject Term: KNOWLEDGE management; Subject Term: COMPUTER architecture; Subject Term: DECISION support systems; Author-Supplied Keyword: CSP acceleration; Author-Supplied Keyword: GPGPU; Author-Supplied Keyword: Knowledge mining; Author-Supplied Keyword: Parallel depth first search algorithm (DFS); Author-Supplied Keyword: XEON Phi; Number of Pages: 25p; Document Type: Article L3 - 10.1007/s11227-016-1712-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115560622&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 115891557 T1 - American Association for the Surgery of Trauma statement on firearm injuries. AU - Streib, Erik AU - Blake, David AU - Christmas, A. Britton AU - Clancy, Keith AU - Cocanour, Christine AU - Cooper, Carnell AU - Driscoll, Robert P. AU - Eastman, Alexander L. AU - Ekeh, Akpofure Peter AU - Gonzalez, Richard AU - Hinsdale, James G. AU - Joseph, Kimberly AU - Kuhls, Deborah A. AU - Thomas, Scott G. AU - Cooper, Zara Y1 - 2016/06// N1 - Accession Number: 115891557. Corporate Author: AAST Prevention Committee. Language: English. Entry Date: In Process. Revision Date: 20160607. Publication Type: journal article. Journal Subset: Biomedical; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 101570622. SP - 849 EP - 849 JO - Journal of Trauma & Acute Care Surgery JF - Journal of Trauma & Acute Care Surgery JA - J TRAUMA ACUTE CARE SURG VL - 80 IS - 6 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 2163-0755 AD - Indiana University School of Medicine, Indianapolis, Indiana AD - United States Air Force, Norfolk, Virginia AD - Carolinas Medical Center, Charlotte, North Carolina AD - UH Case Medical Center, Case Western Reserve University School of Medicine, Beachwood, Ohio AD - UC Davis Medical Center, Sacramento, California AD - South Shore Hospital, Brigham and Women's Hospital, Hingham, Massachusetts AD - UT Southwestern Medical Center, Dallas, Texas AD - Miami Valley Hospital, Wright State University, Dayton, Ohio AD - Loyola University Medical Center, Maywood, Illinois AD - Good Samaritan Hospital, San Jose, California AD - JHS Cook County Hospital, Chicago, Illinois AD - University of Nevada School of Medicine, Las Vegas, Nevada AD - Beacon Trauma & Surgical Services, South Bend, Indiana AD - Center for Surgery and Public Health, Brigham and Women's Hospital, Boston, Massachusetts, Boston, Massachusetts U2 - PMID: 27116407. DO - 10.1097/TA.0000000000001090 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=115891557&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Lei Ying AU - Danhong Huang AU - Ying-Cheng Lai T1 - Multistability, chaos, and random signal generation in semiconductor superlattices. JO - Physical Review E JF - Physical Review E Y1 - 2016/06// VL - 93 IS - 6 M3 - Article SP - 1 EP - 1 SN - 24700045 AB - Historically, semiconductor superlattices, artificial periodic structures of different semiconductor materials, were invented with the purpose of engineering or manipulating the electronic properties of semiconductor devices. A key application lies in generating radiation sources, amplifiers, and detectors in the "unusual" spectral range of subterahertz and terahertz (0.1-10 THz), which cannot be readily realized using conventional radiation sources, the so-called THz gap. Efforts in the past three decades have demonstrated various nonlinear dynamical behaviors including chaos, suggesting the potential to exploit chaos in semiconductor superlattices as random signal sources (e.g., random number generators) in the THz frequency range. We consider a realistic model of hot electrons in semiconductor superlattice, taking into account the induced space charge field. Through a systematic exploration of the phase space we find that, when the system is subject to an external electrical driving of a single frequency, chaos is typically associated with the occurrence of multistability. That is, for a given parameter setting, while there are initial conditions that lead to chaotic trajectories, simultaneously there are other initial conditions that lead to regular motions. Transition to multistability, i.e., the emergence of multistability with chaos as a system parameter passes through a critical point, is found and argued to be abrupt. Multistability thus presents an obstacle to utilizing the superlattice system as a reliable and robust random signal source. However, we demonstrate that, when an additional driving field of incommensurate frequency is applied, multistability can be eliminated, with chaos representing the only possible asymptotic behavior of the system. In such a case, a random initial condition will lead to a trajectory landing in a chaotic attractor with probability 1, making quasiperiodically driven semiconductor superlattices potentially as a reliable device for random signal generation to fill the THz gap. The interplay among noise, multistability, and chaos is also investigated. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHAOS theory KW - SIGNAL processing KW - SEMICONDUCTORS KW - ATTRACTORS (Mathematics) KW - PROBABILITY theory N1 - Accession Number: 119570454; Lei Ying 1 Danhong Huang 2,3 Ying-Cheng Lai 1,4; Email Address: Ying-Cheng.Lai@asu.edu; Affiliation: 1: School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA 3: Center for High Technology Materials, University of New Mexico, 1313 Goddard St. SE, Albuquerque, New Mexico 87106, USA 4: Department of Physics, Arizona State University, Tempe, Arizona 85287, USA; Source Info: Jun2016, Vol. 93 Issue 6, p1; Subject Term: CHAOS theory; Subject Term: SIGNAL processing; Subject Term: SEMICONDUCTORS; Subject Term: ATTRACTORS (Mathematics); Subject Term: PROBABILITY theory; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.1103/PhysRevE.93.062204 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119570454&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Le, Hai P. AU - Cambier, Jean-Luc T1 - Modeling of inelastic collisions in a multifluid plasma: Ionization and recombination. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2016/06// VL - 23 IS - 6 M3 - Article SP - 1 EP - 16 SN - 1070664X AB - A model for ionization and recombination collisions in a multifluid plasma is formulated using the framework introduced in previous work [H. P. Le and J.-L. Cambier, Phys. Plasmas 22, 093512 (2015)]. The exchange source terms for density, momentum, and energy are detailed for the case of electron induced ionization and three body recombination collisions with isotropic scattering. The principle of detailed balance is enforced at the microscopic level. We describe how to incorporate the standard collisional-radiative model into the multifluid equations using the current formulation. Numerical solutions of the collisional-radiative rate equations for atomic hydrogen are presented to highlight the impact of the multifluid effect on the kinetics. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INELASTIC collisions KW - FLUID dynamics KW - IONIZATION (Atomic physics) KW - NUCLEAR physics KW - NUCLEAR density N1 - Accession Number: 116598925; Le, Hai P. 1; Email Address: hai.le@ucla.edu Cambier, Jean-Luc 2; Email Address: jean_luc.cambier@us.af.mil; Affiliation: 1: Department of Mathematics, University of California, Los Angeles, California 90095, USA 2: Air Force Research Laboratory, Edwards AFB, California 93524, USA; Source Info: 2016, Vol. 23 Issue 6, p1; Subject Term: INELASTIC collisions; Subject Term: FLUID dynamics; Subject Term: IONIZATION (Atomic physics); Subject Term: NUCLEAR physics; Subject Term: NUCLEAR density; Number of Pages: 16p; Illustrations: 3 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.4953050 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116598925&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wampler, David AU - Kharod, Chetan AU - Bolleter, Scotty AU - Burkett, Alison AU - Gabehart, Caitlin AU - Manifold, Craig T1 - A randomized control hands-on defibrillation study-Barrier use evaluation. JO - Resuscitation JF - Resuscitation Y1 - 2016/06// VL - 103 M3 - journal article SP - 37 EP - 40 SN - 03009572 AB - Introduction: Chest compressions and defibrillation are the only therapies proven to increase survival in cardiac arrest. Historically, rescuers must remove hands to shock, thereby interrupting chest compressions. This hands-off time results in a zero blood flow state. Pauses have been associated with poorer neurological recovery.Methods: This was a blinded randomized control cadaver study evaluating the detection of defibrillation during manual chest compressions. An active defibrillator was connected to the cadaver in the sternum-apex configuration. The sham defibrillator was not connected to the cadaver. Subjects performed chest compressions using 6 barrier types: barehand, single and double layer nitrile gloves, firefighter gloves, neoprene pad, and a manual chest compression/decompression device. Randomized defibrillations (10 per barrier type) were delivered at 30 joules (J) for bare hand and 360J for all other barriers. After each shock, the subject indicated degree of sensation on a VAS scale.Results: Ten subjects participated. All subjects detected 30j shocks during barehand compressions, with only 1 undetected real shock. All barriers combined totaled 500 shocks delivered. Five (1%) active shocks were detected, 1(0.2%) single layer of Nitrile, 3(0.6%) with double layer nitrile, and 1(0.2%) with the neoprene barrier. One sham shock was reported with the single layer nitrile glove. No shocks were detected with fire gloves or compression decompression device. All shocks detected barely perceptible (0.25(±0.05)cm on 10cm VAS scale).Conclusions: Nitrile gloves and neoprene pad prevent (99%) responder's detection of defibrillation of a cadaver. Fire gloves and compression decompression device prevented detection. [ABSTRACT FROM AUTHOR] AB - Copyright of Resuscitation is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC countershock KW - CPR (First aid) KW - CARDIAC arrest -- Treatment KW - BLOOD flow KW - MEDICAL care KW - RANDOMIZED controlled trials KW - Cardiac arrest KW - Emergency medical services KW - Hands on defibrillation KW - Prehospital medicine N1 - Accession Number: 115243993; Wampler, David 1; Email Address: wamplerd@uthscsa.edu Kharod, Chetan 2 Bolleter, Scotty 3 Burkett, Alison 3 Gabehart, Caitlin 1 Manifold, Craig 1; Affiliation: 1: University of Texas Health Science Center at San Antonio, Department of Emergency Health Sciences, 4201 Medical Dr. Suite 120, San Antonio, TX, 78229, United States 2: United States Air Force, Military EMS & Disaster Medicine Fellowship, Joint Base San Antonio, San Antonio, TX, United States 3: Bulverde Spring Branch Emergency Services, Centre for Emergency Health Sciences, Spring Branch, TX, United States; Source Info: Jun2016, Vol. 103, p37; Subject Term: ELECTRIC countershock; Subject Term: CPR (First aid); Subject Term: CARDIAC arrest -- Treatment; Subject Term: BLOOD flow; Subject Term: MEDICAL care; Subject Term: RANDOMIZED controlled trials; Author-Supplied Keyword: Cardiac arrest; Author-Supplied Keyword: Emergency medical services; Author-Supplied Keyword: Hands on defibrillation; Author-Supplied Keyword: Prehospital medicine; Number of Pages: 4p; Document Type: journal article L3 - 10.1016/j.resuscitation.2016.03.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115243993&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 115243993 T1 - A randomized control hands-on defibrillation study-Barrier use evaluation. AU - Wampler, David AU - Kharod, Chetan AU - Bolleter, Scotty AU - Burkett, Alison AU - Gabehart, Caitlin AU - Manifold, Craig Y1 - 2016/06// N1 - Accession Number: 115243993. Language: English. Entry Date: In Process. Revision Date: 20160517. Publication Type: journal article. Journal Subset: Biomedical; Europe; UK & Ireland. NLM UID: 0332173. SP - 37 EP - 40 JO - Resuscitation JF - Resuscitation JA - RESUSCITATION VL - 103 PB - Elsevier Science AB - Introduction: Chest compressions and defibrillation are the only therapies proven to increase survival in cardiac arrest. Historically, rescuers must remove hands to shock, thereby interrupting chest compressions. This hands-off time results in a zero blood flow state. Pauses have been associated with poorer neurological recovery.Methods: This was a blinded randomized control cadaver study evaluating the detection of defibrillation during manual chest compressions. An active defibrillator was connected to the cadaver in the sternum-apex configuration. The sham defibrillator was not connected to the cadaver. Subjects performed chest compressions using 6 barrier types: barehand, single and double layer nitrile gloves, firefighter gloves, neoprene pad, and a manual chest compression/decompression device. Randomized defibrillations (10 per barrier type) were delivered at 30 joules (J) for bare hand and 360J for all other barriers. After each shock, the subject indicated degree of sensation on a VAS scale.Results: Ten subjects participated. All subjects detected 30j shocks during barehand compressions, with only 1 undetected real shock. All barriers combined totaled 500 shocks delivered. Five (1%) active shocks were detected, 1(0.2%) single layer of Nitrile, 3(0.6%) with double layer nitrile, and 1(0.2%) with the neoprene barrier. One sham shock was reported with the single layer nitrile glove. No shocks were detected with fire gloves or compression decompression device. All shocks detected barely perceptible (0.25(±0.05)cm on 10cm VAS scale).Conclusions: Nitrile gloves and neoprene pad prevent (99%) responder's detection of defibrillation of a cadaver. Fire gloves and compression decompression device prevented detection. SN - 0300-9572 AD - University of Texas Health Science Center at San Antonio, Department of Emergency Health Sciences, 4201 Medical Dr. Suite 120, San Antonio, TX, 78229, United States AD - United States Air Force, Military EMS & Disaster Medicine Fellowship, Joint Base San Antonio, San Antonio, TX, United States AD - Bulverde Spring Branch Emergency Services, Centre for Emergency Health Sciences, Spring Branch, TX, United States U2 - PMID: 27036661. DO - 10.1016/j.resuscitation.2016.03.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=115243993&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Freye, Chris E. AU - Fitz, Brian D. AU - Billingsley, Matthew C. AU - Synovec, Robert E. T1 - Partial least squares analysis of rocket propulsion fuel data using diaphragm valve-based comprehensive two-dimensional gas chromatography coupled with flame ionization detection. JO - Talanta JF - Talanta Y1 - 2016/06// VL - 153 M3 - Article SP - 203 EP - 210 SN - 00399140 AB - The chemical composition and several physical properties of RP-1 fuels were studied using comprehensive two-dimensional (2D) gas chromatography (GC×GC) coupled with flame ionization detection (FID). A “reversed column” GC×GC configuration was implemented with a RTX-wax column on the first dimension ( 1 D), and a RTX-1 as the second dimension ( 2 D). Modulation was achieved using a high temperature diaphragm valve mounted directly in the oven. Using leave-one-out cross-validation (LOOCV), the summed GC×GC–FID signal of three compound-class selective 2D regions (alkanes, cycloalkanes, and aromatics) was regressed against previously measured ASTM derived values for these compound classes, yielding root mean square errors of cross validation (RMSECV) of 0.855, 0.734, and 0.530 mass%, respectively. For comparison, using partial least squares (PLS) analysis with LOOCV, the GC×GC–FID signal of the entire 2D separations was regressed against the same ASTM values, yielding a linear trend for the three compound classes (alkanes, cycloalkanes, and aromatics), yielding RMSECV values of 1.52, 2.76, and 0.945 mass%, respectively. Additionally, a more detailed PLS analysis was undertaken of the compounds classes ( n -alkanes, iso -alkanes, mono-, di-, and tri-cycloalkanes, and aromatics), and of physical properties previously determined by ASTM methods (such as net heat of combustion, hydrogen content, density, kinematic viscosity, sustained boiling temperature and vapor rise temperature). Results from these PLS studies using the relatively simple to use and inexpensive GC×GC–FID instrumental platform are compared to previously reported results using the GC×GC–TOFMS instrumental platform. [ABSTRACT FROM AUTHOR] AB - Copyright of Talanta is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS chromatography/Mass spectrometry (GC-MS) KW - LEAST squares KW - FLAME ionization detectors KW - HIGH temperatures KW - CYCLOALKANES KW - Chemometrics KW - Gas chromatography KW - GC×GC–FID KW - Kerosene KW - PLS KW - RP-1 N1 - Accession Number: 114874298; Freye, Chris E. 1 Fitz, Brian D. 1 Billingsley, Matthew C. 2 Synovec, Robert E. 1; Email Address: synovec@chem.washington.edu; Affiliation: 1: Department of Chemistry, University of Washington, Box 351700, Seattle, WA 98195, USA 2: Air Force Research Laboratory/RQRC, 10 E Saturn Blvd., Edwards AFB, CA 93524, USA; Source Info: Jun2016, Vol. 153, p203; Subject Term: GAS chromatography/Mass spectrometry (GC-MS); Subject Term: LEAST squares; Subject Term: FLAME ionization detectors; Subject Term: HIGH temperatures; Subject Term: CYCLOALKANES; Author-Supplied Keyword: Chemometrics; Author-Supplied Keyword: Gas chromatography; Author-Supplied Keyword: GC×GC–FID; Author-Supplied Keyword: Kerosene; Author-Supplied Keyword: PLS; Author-Supplied Keyword: RP-1; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.talanta.2016.03.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114874298&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wiens, Justin P. AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Viggiano, Albert A. T1 - Mutual neutralization of He+ with the anions Cl-, Br-, I-, and SF6-. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2016/05/28/ VL - 144 IS - 20 M3 - Article SP - 1 EP - 5 SN - 00219606 AB - Mutual neutralization (MN) rate coefficients kMN for He+ with the anions Cl-, Br-, I-, and SF6- are reported from 300 to 500 K. The measured rate coefficients may contain a contribution from transfer ionization, i.e., double ionization of the anion. The large rate coefficient for He+ + SF6- (2.4 × 10-7 cm³ s-1 at 300 K) is consistent with earlier polyatomic MN results found to have a reduced mass dependence of µ-1/2. Neutralization of He+ by the atomic halides follows the trend observed earlier for Ne+, Ar+, Kr+, and Xe+ neutralized by atomic halides, kMN (Cl-) < kMN (Br-) < kMN (I-). Only an upper limit could be measured for the neutralization of He+ by Cl-. Predictions of the rate coefficients from a previously proposed simple model of atomic-atomic MN results are consistent with the present He+-halide rate coefficients. The temperature dependences are modestly negative for Br- and I-, while that for SF6- is small or negligible. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEUTRALIZATION (Chemistry) KW - COEFFICIENTS (Statistics) KW - HELIUM KW - BROMINE KW - CHLORINE KW - ANIONS N1 - Accession Number: 115875742; Wiens, Justin P. 1 Shuman, Nicholas S. 1 Miller, Thomas M. 1 Viggiano, Albert A. 1; Email Address: albert.viggiano@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA; Source Info: 2016, Vol. 144 Issue 20, p1; Subject Term: NEUTRALIZATION (Chemistry); Subject Term: COEFFICIENTS (Statistics); Subject Term: HELIUM; Subject Term: BROMINE; Subject Term: CHLORINE; Subject Term: ANIONS; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325181 Alkali and chlorine manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 5p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.4948637 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115875742&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bannow, Lars C. AU - Rubel, Oleg AU - Badescu, Stefan C. AU - Rosenow, Phil AU - Hader, Jörg AU - Moloney, Jerome V. AU - Tonner, Ralf AU - Koch, Stephan W. T1 - Configuration dependence of band-gap narrowing and localization in dilute GaAs1-xBix alloys. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2016/05/22/ VL - 93 IS - 20 M3 - Article SP - 1 EP - 1 SN - 10980121 AB - Anion substitution with bismuth (Bi) in III-V semiconductors is an effective method for experimental engineering of the band gap Eg at low Bi concentrations (≤2%), in particular in gallium arsenide (GaAs). The inverse Bi-concentration dependence of Eg has been found to be linear at low concentrations x and dominated by a valence band defect level anticrossing between As and Bi occupied p levels. Predictive models for the valence band hybridization require a first-principle understanding which can be obtained by density functional theory with the main challenges being the proper description of Eg and the spin-orbit coupling. By using an efficient method to include these effects, it is shown here that at high concentrations Eg is modified mainly by a Bi-Bi p orbital interaction and by the large Bi atom-induced strain. In particular, we find that at high concentrations, the Bi-Bi interactions depend strongly on model periodic cluster configurations, which are not captured by tight-binding models. Averaging over various configurations supports the defect level broadening picture. This points to the role of different atomic configurations obtained by varying the experimental growth conditions in engineering arsenide band gaps, in particular for telecommunication laser technology. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS periodicals KW - GALLIUM arsenide semiconductors KW - ENERGY gaps (Physics) KW - LOCALIZATION theory KW - BANNOW, Lars C. KW - RUBEL, Oleg KW - BADESCU, Stefan C. KW - ROSENOW, Phil KW - HADER, Jorg KW - MOLONEY, Jerome V. KW - TONNER, Ralf KW - KOCH, Stephan W. N1 - Accession Number: 117525472; Bannow, Lars C. 1; Email Address: lars.bannow@physik.uni-marburg.de Rubel, Oleg 2 Badescu, Stefan C. 3 Rosenow, Phil 4 Hader, Jörg 5 Moloney, Jerome V. 5 Tonner, Ralf 4 Koch, Stephan W. 1; Affiliation: 1: Department of Physics and Material Science Center, Philipps-Universität, 35032 Marburg, Germany 2: Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, Canada L8S 4L8 3: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 4: Department of Chemistry, Philipps-Universität, 35032 Marburg, Germany 5: NLCSTR Inc, 7040 N Montecatina Dr., Tucson, Arizona 85704, USA; Source Info: May2016, Vol. 93 Issue 20, p1; Subject Term: PHYSICS periodicals; Subject Term: GALLIUM arsenide semiconductors; Subject Term: ENERGY gaps (Physics); Subject Term: LOCALIZATION theory; People: BANNOW, Lars C.; People: RUBEL, Oleg; People: BADESCU, Stefan C.; People: ROSENOW, Phil; People: HADER, Jorg; People: MOLONEY, Jerome V.; People: TONNER, Ralf; People: KOCH, Stephan W.; Number of Pages: 1p; Document Type: Article L3 - 10.1103/PhysRevB.93.205202 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117525472&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hartl, Darren J. AU - Frank, Geoffrey J. AU - Baur, Jeffery W. T1 - Effects of microchannels on the mechanical performance of multifunctional composite laminates with unidirectional laminae. JO - Composite Structures JF - Composite Structures Y1 - 2016/05/20/ VL - 143 M3 - Article SP - 242 EP - 254 SN - 02638223 AB - The development of multifunctional composite structures enabled by embedded microvascular networks offers the potential for significant increases in functionality. The addition of active thermal management capability, self-healing, or electromagnetic configurability to a structural composite is attractive. However, the tradeoffs between mechanical performance and extended functionalities remain relatively ill-quantified. Previous studies of the effects of embedded microchannels on structural capability have considered a small number of loading conditions and layups not typically used in aerospace structures. This computational work provides comprehensive structural design guidance by quantifying the negative mechanical effects of parallel and periodic microchannels in aerospace composites, where the results are synthesized from a comprehensive set of analyses performed via rigorous implementation of widely-accepted modeling methods. The impacts of channel orientation, spacing, and channel cross-sectional aspect ratio are all quantified for laminate sequences typical of those used in aerospace structures. [ABSTRACT FROM AUTHOR] AB - Copyright of Composite Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Mechanical properties KW - LAMINATED materials KW - ELECTROMAGNETISM KW - FINITE element method KW - STRUCTURAL design KW - FRACTURE mechanics KW - Composites KW - Damage KW - Design KW - Finite element method KW - Microvascular KW - Multifunctional N1 - Accession Number: 113508391; Hartl, Darren J. 1,2; Email Address: darren.hartl.ctr@us.af.mil Frank, Geoffrey J. 3 Baur, Jeffery W. 1; Affiliation: 1: Materials and Manufacturing Directorate, AFRL/RX, Air Force Research Laboratory, Ohio 45433, USA 2: Universal Technology Corporation, Beavercreek, Ohio 45424, USA 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA; Source Info: May2016, Vol. 143, p242; Subject Term: MATERIALS -- Mechanical properties; Subject Term: LAMINATED materials; Subject Term: ELECTROMAGNETISM; Subject Term: FINITE element method; Subject Term: STRUCTURAL design; Subject Term: FRACTURE mechanics; Author-Supplied Keyword: Composites; Author-Supplied Keyword: Damage; Author-Supplied Keyword: Design; Author-Supplied Keyword: Finite element method; Author-Supplied Keyword: Microvascular; Author-Supplied Keyword: Multifunctional; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.compstruct.2016.01.106 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113508391&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Zheng, Yufeng AU - Blasch, Erik AU - Elmaghraby, Adel S. T1 - Biologically Inspired Methods for Imaging, Cognition, Vision, and Intelligence. JO - Computational Intelligence & Neuroscience JF - Computational Intelligence & Neuroscience Y1 - 2016/05/18/ M3 - Editorial SP - 1 EP - 1 SN - 16875265 KW - BIOLOGICALLY-inspired computing KW - DIAGNOSTIC imaging KW - COMPUTER vision KW - COGNITION KW - COMPUTATIONAL intelligence N1 - Accession Number: 115420100; Zheng, Yufeng 1 Blasch, Erik 2 Elmaghraby, Adel S. 3; Affiliation: 1: Department of Advanced Technologies, Alcorn State University, Lorman, MS 39096, USA 2: US Air Force Research Laboratory (AFRL), Rome, NY 13441, USA 3: Department of Computer Engineering and Computer Science, University of Louisville, Louisville, KY 40292, USA; Source Info: 5/18/2016, p1; Subject Term: BIOLOGICALLY-inspired computing; Subject Term: DIAGNOSTIC imaging; Subject Term: COMPUTER vision; Subject Term: COGNITION; Subject Term: COMPUTATIONAL intelligence; NAICS/Industry Codes: 621512 Diagnostic Imaging Centers; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 1p; Document Type: Editorial L3 - 10.1155/2016/2402067 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115420100&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brawley, Kayla K. AU - Davis, Todd A. T1 - Lewis base catalyzed trialkylsilylcyanide additions to cyclic 2-fluoroketones: nucleophile directed access to both cis- and trans-stereoisomers. JO - Tetrahedron Letters: International Organ for the Rapid Publication of Preliminary Communications in Organic Chemistry JF - Tetrahedron Letters: International Organ for the Rapid Publication of Preliminary Communications in Organic Chemistry Y1 - 2016/05/18/ VL - 57 IS - 20 M3 - Article SP - 2161 EP - 2164 SN - 00404039 AB - An efficient method for the Lewis base-catalyzed addition of trialkylorganosilanes (TMSCN & TBSCN) to cyclic 2-fluoroketones has been developed producing the TMS- or TBS-protected cyanohydrins in good yields and diastereoselectivity. The Lewis base, solvent, and trialkylorganosilane have a dramatic effect on the reaction time and stereoselectivity for these reactions. TMSCN reacted the fastest using DIPEA as the Lewis base, and favored the cis product (up to 22:1), whereas methoxide-catalyzed reactions with TBSCN yielded the trans stereoisomer (up to 18:1). [ABSTRACT FROM AUTHOR] AB - Copyright of Tetrahedron Letters: International Organ for the Rapid Publication of Preliminary Communications in Organic Chemistry is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEWIS bases KW - CYANIDES KW - ADDITION reactions KW - KETONES -- Derivatives KW - NUCLEOPHILES KW - STEREOISOMERS KW - Fluorine KW - Lewis base catalysis KW - Stereoselective synthesis N1 - Accession Number: 114799906; Brawley, Kayla K. 1 Davis, Todd A. 1,2; Email Address: todd.davis@usafa.edu; Affiliation: 1: Department of Chemistry, Campus Box 8023, Idaho State University, Pocatello, ID 83201, United States 2: Department of Chemistry, United States Air Force Academy, Colorado Springs, CO 80840, United States; Source Info: May2016, Vol. 57 Issue 20, p2161; Subject Term: LEWIS bases; Subject Term: CYANIDES; Subject Term: ADDITION reactions; Subject Term: KETONES -- Derivatives; Subject Term: NUCLEOPHILES; Subject Term: STEREOISOMERS; Author-Supplied Keyword: Fluorine; Author-Supplied Keyword: Lewis base catalysis; Author-Supplied Keyword: Stereoselective synthesis; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.tetlet.2016.03.112 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114799906&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Diggs, Angela AU - Balachandar, S. T1 - Evaluation of methods for calculating volume fraction in Eulerian–Lagrangian multiphase flow simulations. JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2016/05/15/ VL - 313 M3 - Article SP - 775 EP - 798 SN - 00219991 AB - The present work addresses numerical methods required to compute particle volume fraction or number density. Local volume fraction of the l th particle, α l , is the quantity of foremost importance in calculating the gas-mediated particle–particle interaction effect in multiphase flows. A general multiphase flow with a distribution of Lagrangian particles inside a fluid flow discretized on an Eulerian grid is considered. Particle volume fraction is needed both as a Lagrangian quantity associated with each particle and also as an Eulerian quantity associated with the grid cell for Eulerian–Lagrangian simulations. In Grid-Based (GB) methods the particle volume fraction is first obtained within each grid cell as an Eulerian quantity and then the local particle volume fraction associated with any Lagrangian particle can be obtained from interpolation. The second class of methods presented are Particle-Based (PB) methods, where particle volume fraction will first be obtained at each particle as a Lagrangian quantity, which then can be projected onto the Eulerian grid. Traditionally, the GB methods are used in multiphase flow, but sub-grid resolution can be obtained through use of the PB methods. By evaluating the total error, and its discretization, bias and statistical error components, the performance of the different PB methods is compared against several common GB methods of calculating volume fraction. The standard von Neumann error analysis technique has been adapted for evaluation of rate of convergence of the different methods. The discussion and error analysis presented focus on the volume fraction calculation, but the methods can be extended to obtain field representations of other Lagrangian quantities, such as particle velocity and temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIPHASE flow KW - LAGRANGIAN mechanics KW - FLOW (Fluid dynamics) KW - CLASSICAL mechanics KW - SIMULATION methods & models KW - Eulerian–Lagrangian simulation of multiphase flow KW - Lagrangian point-particle approach KW - Volume fraction calculation KW - von-Neumann error analysis N1 - Accession Number: 114276575; Diggs, Angela 1,2 Balachandar, S. 1; Email Address: bala1s@ufl.edu; Affiliation: 1: Department of Mechanical & Aerospace Engineering, University of Florida, Gainesville, FL, 32611, United States 2: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL, 32542, United States; Source Info: May2016, Vol. 313, p775; Subject Term: MULTIPHASE flow; Subject Term: LAGRANGIAN mechanics; Subject Term: FLOW (Fluid dynamics); Subject Term: CLASSICAL mechanics; Subject Term: SIMULATION methods & models; Author-Supplied Keyword: Eulerian–Lagrangian simulation of multiphase flow; Author-Supplied Keyword: Lagrangian point-particle approach; Author-Supplied Keyword: Volume fraction calculation; Author-Supplied Keyword: von-Neumann error analysis; Number of Pages: 24p; Document Type: Article L3 - 10.1016/j.jcp.2016.02.066 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114276575&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Joanna S. AU - Wai, Chien M. AU - Brown, Gail J. AU - Apt, Scott D. T1 - Two-Dimensional Nanoparticle Cluster Formation in Supercritical Fluid CO2. JO - Langmuir JF - Langmuir Y1 - 2016/05/10/ VL - 32 IS - 18 M3 - Article SP - 4635 EP - 4642 SN - 07437463 AB - Supercritical fluid carbon dioxide (sc-CO2) is capable of depositing nanoparticles in small structures of silicon substrates because of its gas-like penetration, liquid-like solvation abilities, and near-zero surface tension. In nanometer-sized shallow wells on silicon surface, formation of two-dimensional (2D) monolayer metal nanoparticle (NP) clusters can be achieved using the sc-CO2 deposition method. Nanoparticles tend to fill nanostructured holes first, and then, if sufficient nanoparticles are available, they will continue to cover the flat areas nearby, unless defects or other surface imperfections are available. In addition, SEM images of two-dimensional gold (Au) nanoparticle clusters formed on a flat silicon surface with two to a dozen or more of the nanoparticles are provided to illustrate the patterns of nanoparticle cluster formation in sc-CO2. [ABSTRACT FROM AUTHOR] AB - Copyright of Langmuir is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCRITICAL carbon dioxide KW - GOLD nanoparticles KW - SUBSTRATES (Biochemistry) KW - SOLVATION KW - MICROCLUSTERS N1 - Accession Number: 116176271; Wang, Joanna S. 1; Email Address: joanna.wang.ctr@us.af.mil Wai, Chien M. 2 Brown, Gail J. 1 Apt, Scott D. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7707, United States 2: Department of Chemistry, University of Idaho, Renfrew Hall, Moscow, Idaho 83844, United States; Source Info: 5/10/2016, Vol. 32 Issue 18, p4635; Subject Term: SUPERCRITICAL carbon dioxide; Subject Term: GOLD nanoparticles; Subject Term: SUBSTRATES (Biochemistry); Subject Term: SOLVATION; Subject Term: MICROCLUSTERS; Number of Pages: 8p; Document Type: Article L3 - 10.1021/acs.langmuir.6b01011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116176271&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, David H. AU - McKenzie, Ruel N. AU - Buskohl, Philip R. AU - Vaia, Richard A. AU - Loon-Seng Tan T1 - Hygromorphic Polymers: Synthesis, Retro-Michael Reaction, and Humidity-Driven Actuation of Ester-Sulfonyl Polyimides and Thermally Derived Copolyimides. JO - Macromolecules JF - Macromolecules Y1 - 2016/05/10/ VL - 49 IS - 9 M3 - Article SP - 3286 EP - 3299 SN - 00249297 AB - With a view toward broadening the adaptive capability of polyimide-based systems that have been shown to be mechanically responsive to light, heat, and thermal-electrical stimuli, a simple diamine containing a highly polar ester-sulfonyl (ES) pendant was synthesized via a two-step route. It was polymerized with five common dianhydrides in N-methylpyrrolidinone to afford poly(amic acid), PAA, solutions, which were subsequently converted to a series of amorphous polyimides containing ester-sulfonyl (-CH2CH2SO2Me) pendants, generically designated as PI-ES, by either chemical imidization at room temperature in the same pot or heat treatment of PAA cast film at 175 °C. The chemically imidized polyimide films are tough and creasable, but the thermally imidized ones are brittle because of much lower molecular weights (GPC results). In addition, a series of thermally derived copolymers designated as PI-ES:A, which contains ES and carboxylic acid (A) pendants, were prepared from PI-ES via a retro-Michael reaction at 250 °C, in which A was formed from ES pendant with the concomitant expulsion of vinyl methyl sulfone molecule. For various comparison purposes, the homopolymers, PI-A containing 100% A pendant and nonfunctional PI-N (i.e., without any stimuli-responders), were also prepared from their respective dianhydrido and diamino monomers. In addition to physical/mechanical characterization by FTIR, thermal analysis, WAXD, and DMA, the thin films of PI-ES, PI-A, and PI-ES:A have shown remarkable locomotion and beam-like oscillation under gradient (nonequilibrium) conditions created by humidity (or methanol vapor) while the PI-N, Ultem, and Nafion films were nonresponsive under the same conditions. While the state-of-the-art humidity-driven actuators have illustrated the innovative bilayer designs and clever utilization of responsive polymeric and nanocomposite systems, in which ionic moieties play the critical role in hosting the water molecules, this work shows that a simple, wholly covalent, and amorphous polymer in monolithic form can be hygromorphic and motile, and specifically this newly found humidity-gradient responsivity would enhance the functional versatility of polyimides. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMIDES KW - SULFONYL compounds KW - POLYIMIDES KW - HUMIDITY KW - SYNTHESIS (Chemistry) KW - PYRROLIDINONES N1 - Accession Number: 116161976; Wang, David H. 1 McKenzie, Ruel N. 1 Buskohl, Philip R. 1 Vaia, Richard A. 1 Loon-Seng Tan 1; Email Address: loon.tan@us.af.mil; Affiliation: 1: Functional Materials Division AFRL/RXA, Materials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7750, United States; Source Info: 5/10/2016, Vol. 49 Issue 9, p3286; Subject Term: IMIDES; Subject Term: SULFONYL compounds; Subject Term: POLYIMIDES; Subject Term: HUMIDITY; Subject Term: SYNTHESIS (Chemistry); Subject Term: PYRROLIDINONES; Number of Pages: 14p; Document Type: Article L3 - 10.1021/acs.macromol.6b00250 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116161976&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Putnam, Shawn A. AU - Fairchild, Steven B. AU - Arends, Armando A. AU - Urbas, Augustine M. T1 - All-optical beam deflection method for simultaneous thermal conductivity and thermo-optic coefficient (dn/dT) measurements. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2016/05/07/ VL - 119 IS - 17 M3 - Article SP - 1 EP - 6 SN - 00218979 AB - This work describes an all-optical beam deflection method to simultaneously measure the thermal conductivity (Λ) and thermo-optic coefficient (dn/dT) of materials that are absorbing at λ = 10.6 μm and are transparent to semi-transparent at μ = 632.8 nm. The technique is based on the principle of measuring the beam deflection of a probe beam (632.8 nm) in the frequency-domain due to a spatially and temporally varying index gradient that is thermally induced by 50:50 split pump beam from a CO2 laser (10.6 μm). The technique and analysis methods are validated with measurements of 10 different optical materials having Λ and dn/dT properties ranging between 0.7W/m K≤Λ≤33.5W/mK and -12×10-6K-1≤dn/dT ≤14×10-6K-1, respectively. The described beam deflection technique is highly related to other well-established, all-optical materials characterization methods, namely, thermal lensing and photothermal deflection spectroscopy. Likewise, due to its all-optical, pump-probe nature, it is applicable to materials characterization in extreme environments with minimal errors due to black-body radiation. In addition, the measurement principle can be extended over a broad range of electromagnetic wavelengths (e.g., ultraviolet to THz) provided the required sources, detectors, and focusing elements are available. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMO-optical devices KW - RESEARCH KW - THERMAL conductivity KW - DEFLECTION (Light) KW - PHOTOTHERMAL spectroscopy KW - ELECTROMAGNETIC waves KW - OPTICAL materials KW - FREQUENCY-domain analysis N1 - Accession Number: 115195030; Putnam, Shawn A. 1 Fairchild, Steven B. 2 Arends, Armando A. 1 Urbas, Augustine M. 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, University of Central Florida, Orlando, Florida 32816, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 5/7/2016, Vol. 119 Issue 17, p1; Subject Term: THERMO-optical devices; Subject Term: RESEARCH; Subject Term: THERMAL conductivity; Subject Term: DEFLECTION (Light); Subject Term: PHOTOTHERMAL spectroscopy; Subject Term: ELECTROMAGNETIC waves; Subject Term: OPTICAL materials; Subject Term: FREQUENCY-domain analysis; Number of Pages: 6p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.4948429 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115195030&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brahim Akdim AU - Ruth Pachter AU - Shin Mou T1 - Theoretical analysis of the combined effects of sulfur vacancies and analyte adsorption on the electronic properties of single-layer MoS2. JO - Nanotechnology JF - Nanotechnology Y1 - 2016/05/06/ VL - 27 IS - 18 M3 - Article SP - 1 EP - 1 SN - 09574484 AB - We report a first-principles theoretical investigation on the electronic structure and electron transport of defective single-layer (SL) MoS2, as well as of corresponding structures adsorbed with benzyl viologen (BV), which was shown to provide improved performance of a field effect transistor. O2 adsorption was included to gain an understanding of the response upon air-exposure. Following analysis of the structure and stability of sulfur single vacancy and line defects in SL MoS2, we investigated the local transport at the adsorbed sites via a transport model that mimics a scanning tunneling spectroscopy experiment. Distinct current–voltage characteristics were indicated for adsorbed oxygen species at a sulfur vacancy. The electronic structures of defective MoS2 indicated the emergence of impurity states in the bandgap due to sulfur defects and oxygen adsorption. Electron transport calculations for the MoS2 surface with an extended defect in a device setting demonstrated that physisorption of BV enhances the output current, while facile chemisorption by O2 upon air-exposure causes degradation of electron transport. [ABSTRACT FROM AUTHOR] AB - Copyright of Nanotechnology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC structure -- Research KW - ELECTRON transport KW - RESEARCH KW - VIOLOGENS KW - FIELD-effect transistors KW - DENSITY functional theory KW - SCANNING tunneling microscopy N1 - Accession Number: 113954610; Brahim Akdim 1,2; Email Address: brahim.akdim.ctr@us.af.mil Ruth Pachter 1; Email Address: ruth.pachter@us.af.mil Shin Mou 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate,Wright-Patterson Air Force Base, OH 45433, USA 2: General Dynamics Information Technology, Inc., 500 Springfield Pike, Dayton, OH 454331, USA; Source Info: 5/6/2016, Vol. 27 Issue 18, p1; Subject Term: ELECTRONIC structure -- Research; Subject Term: ELECTRON transport; Subject Term: RESEARCH; Subject Term: VIOLOGENS; Subject Term: FIELD-effect transistors; Subject Term: DENSITY functional theory; Subject Term: SCANNING tunneling microscopy; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0957-4484/27/18/185701 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113954610&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Konkova, Tatyana AU - Mironov, Sergey AU - Korznikov, Alexander AU - Korznikova, Galia AU - Myshlyaev, Mikhail M. AU - Semiatin, S.Lee T1 - Grain growth during annealing of cryogenically-rolled Cu–30Zn brass. JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2016/05/05/ VL - 666 M3 - Article SP - 170 EP - 177 SN - 09258388 AB - The grain-growth behavior of cryogenically-rolled Cu–30Zn brass during isothermal annealing at 900 °C was examined. The observed microstructure coarsening was interpreted in terms of normal grain growth with a grain-growth exponent of ∼4. The relatively slow grain-growth kinetics was attributed to the formation of precipitates at the grain boundaries and the interaction of texture and grain growth. The development of a moderate-strength {110} α fiber texture (∼4 times random) as well as the presence of a limited number of twin variants within the grains suggested the occurrence of variant selection during annealing. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL crystals -- Growth KW - ANNEALING of metals KW - COPPER-zinc alloys KW - BRASS KW - MICROSTRUCTURE KW - PRECIPITATION (Chemistry) KW - Grain boundaries KW - Metal and alloys KW - Metallography KW - Microstructure KW - Scanning electron microscopy N1 - Accession Number: 112868004; Konkova, Tatyana 1,2 Mironov, Sergey 1,3; Email Address: smironov@material.tohoku.ac.jp Korznikov, Alexander 1,4 Korznikova, Galia 1 Myshlyaev, Mikhail M. 5,6 Semiatin, S.Lee 7; Affiliation: 1: Institute for Metals Superplasticity Problems, Russian Academy of Science, 39 Khalturin Str., Ufa, 450001, Russia 2: Advanced Forming Research Centre, University of Strathclyde, 85 Inchinnan Drive, Inchinnan, PA4 9LJ, United Kingdom 3: Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Sendai, 980-8579, Japan 4: National Research Tomsk State University, 36 Lenina av., Tomsk, 634050, Russia 5: Baikov Institute of Metallurgy and Material Science, Russian Academy of Science, 49 Lenin-av., Moscow, 119991, Russia 6: Institute of Solid State Physics, Russian Academy of Sciences, 2 Academic Osypian Str., Chernogolovka, Moscow oblast, 142432, Russia 7: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, OH, 45433-7817, USA; Source Info: May2016, Vol. 666, p170; Subject Term: METAL crystals -- Growth; Subject Term: ANNEALING of metals; Subject Term: COPPER-zinc alloys; Subject Term: BRASS; Subject Term: MICROSTRUCTURE; Subject Term: PRECIPITATION (Chemistry); Author-Supplied Keyword: Grain boundaries; Author-Supplied Keyword: Metal and alloys; Author-Supplied Keyword: Metallography; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Scanning electron microscopy; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jallcom.2016.01.097 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112868004&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ziyao Zhou AU - Grocke, Garrett AU - Yanguas-Gil, Angel AU - Xinjun Wang AU - Yuan Gao AU - Nianxiang Sun AU - Howe, Brandon AU - Xing Chen T1 - CoFe2/Al2O3/PMNPT multiferroic heterostructures by atomic layer deposition. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2016/05/02/ VL - 108 IS - 18 M3 - Article SP - 182907-1 EP - 182907-4 SN - 00036951 AB - Multiferroic materials and applications allow electric bias control of magnetism or magnetic bias control of polarization, enabling fast, compact, energy-efficient devices in RF/microwave communication systems such as filters, shifters, and antennas; electronics devices such as inductors and capacitors; and other magnetic material related applications including sensors and memories. In this manuscript, we utilize atomic layer deposition technology to grow magnetic CoFe metallic thin films onto PMNPT, with a ~110 Oe electric field induced ferromagnetic resonance field shift in the CoFe/Al2O3/PMNPT multiferroic heterostructure. Our work demonstrates an atomic layer deposition fabricated multiferroic heterostructure with significant tunability and shows that the unique thin film growth mechanism will benefit integrated multiferroic application in near future. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIFERROIC materials KW - ATOMIC layer deposition KW - ARCHITECTURE & energy conservation KW - MICROWAVE communication systems KW - FERROMAGNETIC resonance N1 - Accession Number: 115202202; Ziyao Zhou 1 Grocke, Garrett 1 Yanguas-Gil, Angel 1 Xinjun Wang 2 Yuan Gao 2 Nianxiang Sun 2 Howe, Brandon 3 Xing Chen 1; Email Address: xchen@anl.gov; Affiliation: 1: Energy Systems Division, Argonne National Laboratory, Lemont, Illinois 60517, USA 2: Electrical and Computer Engineering, Northeastern University, Boston, Massachusetts 02115, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7707, USA; Source Info: 2016, Vol. 108 Issue 18, p182907-1; Subject Term: MULTIFERROIC materials; Subject Term: ATOMIC layer deposition; Subject Term: ARCHITECTURE & energy conservation; Subject Term: MICROWAVE communication systems; Subject Term: FERROMAGNETIC resonance; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 4p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.4948977 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115202202&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blakeman, Thomas C. AU - Rodriquez Jr., Dario AU - Britton, Tyler J. AU - Johannigman, Jay A. AU - Petro, Michael C. AU - Branson, Richard D. AU - Rodriquez, Dario Jr T1 - Performance of Portable Ventilators Following Storage at Temperature Extremes. JO - Military Medicine JF - Military Medicine Y1 - 2016/05/02/May2016 Supplement VL - 181 M3 - Article SP - 156 EP - 159 PB - AMSUS SN - 00264075 AB - In the current theater of operation, medical devices are often shipped and stored at ambient conditions. The effect of storage at hot and cold temperature extremes on ventilator performance is unknown. We evaluated three portable ventilators currently in use or being evaluated for use by the Department of Defense (731, Impact Instrumentation; T1, Hamilton Medical; and Revel, CareFusion) at temperature extremes in a laboratory setting. The ventilators were stored at temperatures of 60°C and -35°C for 24 hours and were allowed to acclimate to room temperature for 30 minutes before evaluation. The T1 required an extra 15 to 30 minutes of acclimation to room temperature before the ventilator would deliver breaths. All delivered tidal volumes at room temperature and after storage at temperature extremes were less than the ±10% American Society for Testing and Materials standard with the Revel. Delivered tidal volumes at the pediatric settings were less than the ±10% threshold after storage at both temperatures and at room temperature with the 731. Storage at extreme temperature affected the performance of the portable ventilators tested. This study showed that portable ventilators may need an hour or more of acclimation time at room temperature after storage at temperature extremes to operate as intended. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESPIRATORS (Medical equipment) KW - STORAGE KW - TEMPERATURE effect KW - MEDICAL laboratories KW - UNITED States. Dept. of Defense N1 - Accession Number: 115357078; Blakeman, Thomas C. 1 Rodriquez Jr., Dario 2 Britton, Tyler J. 2 Johannigman, Jay A. 1 Petro, Michael C. 2 Branson, Richard D. 1 Rodriquez, Dario Jr 3; Affiliation: 1: Division of Trauma/Critical Care, Department of Surgery, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0558. 2: United States Air Force, Cincinnati Center for Sustainment of Trauma and Readiness Skills (C-STARS), University of Cincinnati Medical Center, 234 Goodman Street, Cincinnati, OH 45219. 3: United States Air Force, Cincinnati Center for Sustainment of Trauma and Readiness Skills (C-STARS), University of Cincinnati Medical Center, 234 Goodman Street, Cincinnati, OH 45219; Source Info: May2016 Supplement, Vol. 181, p156; Subject Term: RESPIRATORS (Medical equipment); Subject Term: STORAGE; Subject Term: TEMPERATURE effect; Subject Term: MEDICAL laboratories; Company/Entity: UNITED States. Dept. of Defense; NAICS/Industry Codes: 621510 Medical and diagnostic laboratories; NAICS/Industry Codes: 621511 Medical Laboratories; NAICS/Industry Codes: 334510 Electromedical and Electrotherapeutic Apparatus Manufacturing; NAICS/Industry Codes: 339110 Medical equipment and supplies manufacturing; NAICS/Industry Codes: 493110 General Warehousing and Storage; NAICS/Industry Codes: 493190 Other Warehousing and Storage; Number of Pages: 4p; Document Type: Article L3 - 10.7205/MILMED-D-15-00135 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115357078&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blakeman, Thomas C. AU - Rodriquez Jr., Dario AU - Britton, Tyler J. AU - Johannigman, Jay A. AU - Petro, Michael C. AU - Branson, Richard D. AU - Rodriquez, Dario Jr T1 - Evaluation of Oxygen Concentrators and Chemical Oxygen Generators at Altitude and Temperature Extremes. JO - Military Medicine JF - Military Medicine Y1 - 2016/05/02/May2016 Supplement VL - 181 M3 - Article SP - 160 EP - 168 PB - AMSUS SN - 00264075 AB - Oxygen cylinders are heavy and present a number of hazards, and liquid oxygen is too heavy and cumbersome to be used in far forward environments. Portable oxygen concentrators (POCs) and chemical oxygen generators (COGs) have been proposed as a solution. We evaluated 3 commercially available POCs and 3 COGs in a laboratory setting. Altitude testing was done at sea level and 8,000, 16,000, and 22,000 ft. Temperature extreme testing was performed after storing devices at 60°C and -35°C for 24 hours. Mean FIO2 decreased after storage at -35°C with Eclipse and iGo POCs and also at the higher volumes after storage at 60°C with the Eclipse. The iGo ceased to operate at 16,000 ft, but the Eclipse and Saros were unaffected by altitude. Oxygen flow, duration of operation, and total oxygen volume varied between COGs and within the same device type. Output decreased after storage at -35°C, but increased at each altitude as compared to sea level. This study showed significant differences in the performance of POCs and COGs after storage at temperature extremes and with the COGs at altitude. Clinicians must understand the performance characteristics of devices in all potential environments. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXYGEN -- Equipment & supplies KW - STORAGE KW - TEMPERATURE effect KW - MILITARY medicine KW - EQUIPMENT & supplies KW - MEDICAL equipment N1 - Accession Number: 115357181; Blakeman, Thomas C. 1 Rodriquez Jr., Dario 2 Britton, Tyler J. 2 Johannigman, Jay A. 1 Petro, Michael C. 2 Branson, Richard D. 1 Rodriquez, Dario Jr 3; Affiliation: 1: Division of Trauma and Critical Care, Department of Surgery, College of Medicine, University of Cincinnati, 231 Albert Sabin Way, Cincinnati, OH 45267-0558. 2: United States Air Force, Cincinnati C-STARS, University of Cincinnati Medical Center, 234 Goodman Street, Cincinnati, OH 45219. 3: United States Air Force, Cincinnati C-STARS, University of Cincinnati Medical Center, 234 Goodman Street, Cincinnati, OH 45219; Source Info: May2016 Supplement, Vol. 181, p160; Subject Term: OXYGEN -- Equipment & supplies; Subject Term: STORAGE; Subject Term: TEMPERATURE effect; Subject Term: MILITARY medicine; Subject Term: EQUIPMENT & supplies; Subject Term: MEDICAL equipment; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 417930 Professional machinery, equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423450 Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers; NAICS/Industry Codes: 339112 Surgical and Medical Instrument Manufacturing; NAICS/Industry Codes: 339110 Medical equipment and supplies manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 493190 Other Warehousing and Storage; NAICS/Industry Codes: 493110 General Warehousing and Storage; Number of Pages: 9p; Document Type: Article L3 - 10.7205/MILMED-D-15-00130 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115357181&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 115357078 T1 - Performance of Portable Ventilators Following Storage at Temperature Extremes. AU - Blakeman, Thomas C. AU - Rodriquez Jr., Dario AU - Britton, Tyler J. AU - Johannigman, Jay A. AU - Petro, Michael C. AU - Branson, Richard D. AU - Rodriquez, Dario Jr Y1 - 2016/05/02/May2016 Supplement N1 - Accession Number: 115357078. Language: English. Entry Date: In Process. Revision Date: 20160521. Publication Type: Article. Supplement Title: May2016 Supplement. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 2984771R. SP - 156 EP - 159 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 181 CY - Bethesda, Maryland PB - AMSUS AB - In the current theater of operation, medical devices are often shipped and stored at ambient conditions. The effect of storage at hot and cold temperature extremes on ventilator performance is unknown. We evaluated three portable ventilators currently in use or being evaluated for use by the Department of Defense (731, Impact Instrumentation; T1, Hamilton Medical; and Revel, CareFusion) at temperature extremes in a laboratory setting. The ventilators were stored at temperatures of 60°C and -35°C for 24 hours and were allowed to acclimate to room temperature for 30 minutes before evaluation. The T1 required an extra 15 to 30 minutes of acclimation to room temperature before the ventilator would deliver breaths. All delivered tidal volumes at room temperature and after storage at temperature extremes were less than the ±10% American Society for Testing and Materials standard with the Revel. Delivered tidal volumes at the pediatric settings were less than the ±10% threshold after storage at both temperatures and at room temperature with the 731. Storage at extreme temperature affected the performance of the portable ventilators tested. This study showed that portable ventilators may need an hour or more of acclimation time at room temperature after storage at temperature extremes to operate as intended. SN - 0026-4075 AD - Division of Trauma/Critical Care, Department of Surgery, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0558. AD - United States Air Force, Cincinnati Center for Sustainment of Trauma and Readiness Skills (C-STARS), University of Cincinnati Medical Center, 234 Goodman Street, Cincinnati, OH 45219. AD - United States Air Force, Cincinnati Center for Sustainment of Trauma and Readiness Skills (C-STARS), University of Cincinnati Medical Center, 234 Goodman Street, Cincinnati, OH 45219 U2 - PMID: 27168567. DO - 10.7205/MILMED-D-15-00135 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=115357078&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 115357181 T1 - Evaluation of Oxygen Concentrators and Chemical Oxygen Generators at Altitude and Temperature Extremes. AU - Blakeman, Thomas C. AU - Rodriquez Jr., Dario AU - Britton, Tyler J. AU - Johannigman, Jay A. AU - Petro, Michael C. AU - Branson, Richard D. AU - Rodriquez, Dario Jr Y1 - 2016/05/02/May2016 Supplement N1 - Accession Number: 115357181. Language: English. Entry Date: In Process. Revision Date: 20160521. Publication Type: Article. Supplement Title: May2016 Supplement. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 2984771R. SP - 160 EP - 168 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 181 CY - Bethesda, Maryland PB - AMSUS AB - Oxygen cylinders are heavy and present a number of hazards, and liquid oxygen is too heavy and cumbersome to be used in far forward environments. Portable oxygen concentrators (POCs) and chemical oxygen generators (COGs) have been proposed as a solution. We evaluated 3 commercially available POCs and 3 COGs in a laboratory setting. Altitude testing was done at sea level and 8,000, 16,000, and 22,000 ft. Temperature extreme testing was performed after storing devices at 60°C and -35°C for 24 hours. Mean FIO2 decreased after storage at -35°C with Eclipse and iGo POCs and also at the higher volumes after storage at 60°C with the Eclipse. The iGo ceased to operate at 16,000 ft, but the Eclipse and Saros were unaffected by altitude. Oxygen flow, duration of operation, and total oxygen volume varied between COGs and within the same device type. Output decreased after storage at -35°C, but increased at each altitude as compared to sea level. This study showed significant differences in the performance of POCs and COGs after storage at temperature extremes and with the COGs at altitude. Clinicians must understand the performance characteristics of devices in all potential environments. SN - 0026-4075 AD - Division of Trauma and Critical Care, Department of Surgery, College of Medicine, University of Cincinnati, 231 Albert Sabin Way, Cincinnati, OH 45267-0558. AD - United States Air Force, Cincinnati C-STARS, University of Cincinnati Medical Center, 234 Goodman Street, Cincinnati, OH 45219. AD - United States Air Force, Cincinnati C-STARS, University of Cincinnati Medical Center, 234 Goodman Street, Cincinnati, OH 45219 U2 - PMID: 27168568. DO - 10.7205/MILMED-D-15-00130 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=115357181&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Roth, Caleb C. AU - Glickman, Randolph D. AU - Tolstykh, Gleb P. AU - Estlack, Larry E. AU - Moen, Erick K. AU - Echchgadda, Ibtissam AU - Beier, Hope T. AU - Jr.Barnes, Ronald A. AU - Ibey, Bennett L. T1 - Evaluation of the Genetic Response of U937 and Jurkat Cells to 10-Nanosecond Electrical Pulses (nsEP). JO - PLoS ONE JF - PLoS ONE Y1 - 2016/05/02/ VL - 11 IS - 5 M3 - Article SP - 1 EP - 24 PB - Public Library of Science SN - 19326203 AB - Nanosecond electrical pulse (nsEP) exposure activates signaling pathways, produces oxidative stress, stimulates hormone secretion, causes cell swelling and induces apoptotic and necrotic death. The underlying biophysical connection(s) between these diverse cellular reactions and nsEP has yet to be elucidated. Using global genetic analysis, we evaluated how two commonly studied cell types, U937 and Jurkat, respond to nsEP exposure. We hypothesized that by studying the genetic response of the cells following exposure, we would gain direct insight into the stresses experienced by the cell and in turn better understand the biophysical interaction taking place during the exposure. Using Ingenuity Systems software, we found genes associated with cell growth, movement and development to be significantly up-regulated in both cell types 4 h post exposure to nsEP. In agreement with our hypothesis, we also found that both cell lines exhibit significant biological changes consistent with mechanical stress induction. These results advance nsEP research by providing strong evidence that the interaction of nsEPs with cells involves mechanical stress. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JAK-STAT pathway KW - OXIDATIVE stress KW - HORMONES KW - BIOPHYSICS KW - GROWTH factors KW - Bioassays and physiological analysis KW - Biochemistry KW - Biology and life sciences KW - Cell biology KW - Cell membranes KW - Cell processes KW - Cell signaling KW - Cellular stress responses KW - Cellular structures and organelles KW - Classical mechanics KW - Gene expression KW - Genetics KW - MAPK signaling cascades KW - Mechanical stress KW - Membrane proteins KW - Microarrays KW - Oxidative stress KW - Physical sciences KW - Physics KW - Proteins KW - Research and analysis methods KW - Research Article KW - Signal transduction KW - Signaling cascades KW - Transmembrane receptors N1 - Accession Number: 115054462; Roth, Caleb C. 1,2; Email Address: rothc@livemail.uthscsa.edu Glickman, Randolph D. 3 Tolstykh, Gleb P. 2 Estlack, Larry E. 2 Moen, Erick K. 4 Echchgadda, Ibtissam 2,5 Beier, Hope T. 6 Jr.Barnes, Ronald A. 7 Ibey, Bennett L. 5; Affiliation: 1: Department of Radiological Sciences, University of Texas Health Science Center San Antonio, San Antonio, Texas 78229, United States of America 2: General Dynamics IT, JBSA Fort Sam Houston, San Antonio, Texas 78234, United States of America 3: Department of Ophthalmology, University of Texas Health Science Center San Antonio, San Antonio, Texas 78229, United States of America 4: Department of Electrical Engineering, University of Southern California, Los Angeles, California, 90089, United States of America 5: Bioeffects Division, Air Force Research Laboratory, Radiofrequency Branch, JBSA Fort Sam Houston, San Antonio, Texas 78234, United States of America 6: Bioeffects Division, Air Force Research Laboratory, Optical Radiation Branch, JBSA Fort Sam Houston, San Antonio, Texas 78234, United States of America 7: National Research Council Research Associateship Program, JBSA Fort Sam Houston, San Antonio, Texas 78234, United States of America; Source Info: 5/2/2016, Vol. 11 Issue 5, p1; Subject Term: JAK-STAT pathway; Subject Term: OXIDATIVE stress; Subject Term: HORMONES; Subject Term: BIOPHYSICS; Subject Term: GROWTH factors; Author-Supplied Keyword: Bioassays and physiological analysis; Author-Supplied Keyword: Biochemistry; Author-Supplied Keyword: Biology and life sciences; Author-Supplied Keyword: Cell biology; Author-Supplied Keyword: Cell membranes; Author-Supplied Keyword: Cell processes; Author-Supplied Keyword: Cell signaling; Author-Supplied Keyword: Cellular stress responses; Author-Supplied Keyword: Cellular structures and organelles; Author-Supplied Keyword: Classical mechanics; Author-Supplied Keyword: Gene expression; Author-Supplied Keyword: Genetics; Author-Supplied Keyword: MAPK signaling cascades; Author-Supplied Keyword: Mechanical stress; Author-Supplied Keyword: Membrane proteins; Author-Supplied Keyword: Microarrays; Author-Supplied Keyword: Oxidative stress; Author-Supplied Keyword: Physical sciences; Author-Supplied Keyword: Physics; Author-Supplied Keyword: Proteins; Author-Supplied Keyword: Research and analysis methods; Author-Supplied Keyword: Research Article; Author-Supplied Keyword: Signal transduction; Author-Supplied Keyword: Signaling cascades; Author-Supplied Keyword: Transmembrane receptors; Number of Pages: 24p; Document Type: Article L3 - 10.1371/journal.pone.0154555 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115054462&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harker, Blaine M. AU - Neilsen, Tracianne B. AU - Gee, Kent L. AU - Wall, Alan T. AU - James, Michael M. T1 - Spatiotemporal-Correlation Analysis of Jet Noise from a High-Performance Military Aircraft. JO - AIAA Journal JF - AIAA Journal Y1 - 2016/05// VL - 54 IS - 5 M3 - Article SP - 1554 EP - 1566 SN - 00011452 AB - Correlation analyses of ground-based acoustic-pressure measurements of noise from a tethered F-22A provide insights into the sound-field characteristics with position and engine condition. Time-scaled single-point (auto)correlation functions show that, to the side of the nozzle exit, the temporal-correlation envelope decays rapidly, whereas the envelope decays more slowly in the maximum radiation region and farther downstream. This type of spatial variation has been previously attributed to a transition from fine- to large-scale mixing noise in laboratory-scale jets. Two-point space-time (cross) correlation functions demonstrate that noise from a single engine operating at intermediate power is similar to that from a heated, convectively subsonic laboratory-scale jet, whereas additional features are seen at afterburner, relative to supersonic laboratory jets. A complementary coherence analysis provides estimates of coherence lengths as a function of frequency and location. Acoustic coherence lengths across the ground microphone array are used to analyze one-dimensional, equivalent-source-coherence lengths obtained from the DAMAS-C beamforming algorithm. The source coherence reaches its maximum downstream of the maximum source level, suggesting that uncorrelated sources meaningfully contribute to the dominant source region. In addition to revealing further the nature of the sound field near an advanced tactical engine, the characteristics seen should be useful as a phenomenological comparison point for those trying to model military-scale results both experimentally and numerically. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JET planes -- Noise KW - CORRELATION (Statistics) KW - SPATIOTEMPORAL processes KW - COHERENCE length KW - MICROPHONE N1 - Accession Number: 115227635; Harker, Blaine M. 1 Neilsen, Tracianne B. 1 Gee, Kent L. 1 Wall, Alan T. 2 James, Michael M. 3; Affiliation: 1: Brigham Young University, Provo, Utah 84602 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 3: Blue Ridge Research and Consulting, LLC, Asheville, North Carolina 28801; Source Info: May2016, Vol. 54 Issue 5, p1554; Subject Term: JET planes -- Noise; Subject Term: CORRELATION (Statistics); Subject Term: SPATIOTEMPORAL processes; Subject Term: COHERENCE length; Subject Term: MICROPHONE; NAICS/Industry Codes: 334310 Audio and Video Equipment Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.2514/1.J054442 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115227635&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Granlund, Kenneth O. AU - Ol, Michael V. AU - Jones, Anya R. T1 - Streamwise Oscillation of Airfoils into Reverse Flow. JO - AIAA Journal JF - AIAA Journal Y1 - 2016/05// VL - 54 IS - 5 M3 - Article SP - 1628 EP - 1636 SN - 00011452 AB - A NACA 0012 airfoil is oscillated in streamwise direction in a constant freestream and at a fixed incidence angle such that reverse flow occurs cyclically. Force measurements reveal that lift is close to unsteady theory while advancing into the freestream, if the angle of attack permits attached flow. Lift is augmented at large angles of attack, where the flow is separated under steady conditions, and does not become appreciatively negative in flow reversal for either attached or separated flow, contrary to one unsteady theory but supported by another. Dye flow visualization reveals a coherent vortical structure upstream of the leading edge before flow reversal, which is believed to attenuate negative lift. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROFOILS KW - OSCILLATIONS KW - FLOW reversal (Fluid dynamics) KW - FLOW separation (Fluid dynamics) KW - FLOW visualization N1 - Accession Number: 115227641; Granlund, Kenneth O. 1 Ol, Michael V. 2 Jones, Anya R. 3; Affiliation: 1: North Carolina State University, Raleigh, North Carolina 27695 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 3: University of Maryland, College Park, Maryland 20742; Source Info: May2016, Vol. 54 Issue 5, p1628; Subject Term: AEROFOILS; Subject Term: OSCILLATIONS; Subject Term: FLOW reversal (Fluid dynamics); Subject Term: FLOW separation (Fluid dynamics); Subject Term: FLOW visualization; Number of Pages: 9p; Document Type: Article L3 - 10.2514/1.J054674 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115227641&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shen, Y. AU - Leontsev, S. AU - Sheets, A. O. AU - Horwath, J. C. AU - Turgut, Z. T1 - Effect of flake thickness on coercivity of nanocrystalline SmCo5 bulk prepared from anisotropic nanoflake powder. JO - AIP Advances JF - AIP Advances Y1 - 2016/05// VL - 6 IS - 5 M3 - Article SP - 1 EP - 7 SN - 21583226 AB - In this study, nanocrystalline SmCo5 bulk magnets were prepared by hot-pressing of nanoflake powders fabricated via surfactant-assisted high energy ball milling. Effect of the flake thickness on magnetic coercivity of the SmCo5 bulk was investigated. Anisotropic SmCo5 nanoflakes with thickness between 100 and 1000 nm were prepared by varying the milling parameter of ball-to-powder weight ratio. XRD analysis revealed that as-milled flake powders possessed nanocrystalline grains with no observable oxide peaks. The coercivity of the flake powders varied between 19.9 and 21.3 kOe for 1000 nm to 100 nm thick flakes, which indicated that the flake thickness in this range had no obvious effect on the coercivity of the powders. However, the coercivity of the bulks showed a strong dependence on the flake thickness. The bulk coercivity value of 10.97 kOe corresponding to the flake thickness of 100 nm, was 80% higher compared to the bulk prepared with the flakes of 1000 nm. XRD results on compacted samples did not show any grain growth, however, Sm2O3 and free Co were detected in SmCo5 bulks and their content increased with reduced flake thickness. Interestingly enough the bulk coercivity was not deteriorated with the presence of Sm oxide and Co. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Advances is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOCRYSTALS KW - RESEARCH KW - SAMARIUM compounds KW - ANISOTROPY N1 - Accession Number: 115891034; Shen, Y. 1,2 Leontsev, S. 1,2 Sheets, A. O. 2,3 Horwath, J. C. 2 Turgut, Z. 2; Affiliation: 1: University of Dayton, Dayton, Ohio 45469, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 3: UES Inc., Dayton, Ohio 45432, USA; Source Info: 2016, Vol. 6 Issue 5, p1; Subject Term: NANOCRYSTALS; Subject Term: RESEARCH; Subject Term: SAMARIUM compounds; Subject Term: ANISOTROPY; Number of Pages: 7p; Document Type: Article L3 - 10.1063/1.4943015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115891034&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cycyota, Cynthia S. AU - Ferrante, Claudia J. AU - Schroeder, Jessica M. T1 - Corporate social responsibility and employee volunteerism: What do the best companies do? JO - Business Horizons JF - Business Horizons Y1 - 2016/05// VL - 59 IS - 3 M3 - Article SP - 321 EP - 329 SN - 00076813 AB - Employee volunteerism as a practice of corporate social responsibility aids corporations by strengthening employee satisfaction and retention internally and by strengthening corporate reputations and connections with stakeholders externally. Of particular interest are the specific practices and procedures used by companies to encourage and support volunteer activities of their employees. We reviewed publicly available documents of Fortune 's 100 Best Companies to Work For ranking to gain insight into how these best companies practice employee volunteerism and whether they link employee volunteerism to their corporate social responsibility strategy. We propose a connection of the position and importance of employee volunteerism in the corporate practices of social responsibility. Our findings suggest that many highly regarded companies specifically link employee volunteerism to their corporate social responsibility strategy. These companies also utilize similar practices to encourage and support employee volunteerism. We highlight the practices that managers could consider to support their corporate social responsibility efforts and offer several suggestions for future consideration. [ABSTRACT FROM AUTHOR] AB - Copyright of Business Horizons is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOCIAL responsibility of business KW - EMPLOYEE retention KW - STAKEHOLDERS KW - CORPORATE image KW - BUSINESS planning KW - VOLUNTEER service KW - Community involvement KW - Corporate reputation KW - Corporate Social Responsibility KW - Employee volunteerism KW - Organizational Citizenship Behavior KW - Stakeholder engagement N1 - Accession Number: 115023978; Cycyota, Cynthia S. 1; Email Address: cynthia.cycyota@usafa.edu; Ferrante, Claudia J. 1; Email Address: claudia.ferrante@usafa.edu; Schroeder, Jessica M. 1; Email Address: jessica.schroeder@usafa.edu; Affiliations: 1: United States Air Force Academy, HQ USAFA/DFM, 2354 Fairchild Drive, Suite 6H-130, USAF Academy, CO 80840, U.S.A.; Issue Info: May2016, Vol. 59 Issue 3, p321; Thesaurus Term: SOCIAL responsibility of business; Thesaurus Term: EMPLOYEE retention; Thesaurus Term: STAKEHOLDERS; Thesaurus Term: CORPORATE image; Thesaurus Term: BUSINESS planning; Subject Term: VOLUNTEER service; Author-Supplied Keyword: Community involvement; Author-Supplied Keyword: Corporate reputation; Author-Supplied Keyword: Corporate Social Responsibility; Author-Supplied Keyword: Employee volunteerism; Author-Supplied Keyword: Organizational Citizenship Behavior; Author-Supplied Keyword: Stakeholder engagement; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.bushor.2016.01.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=115023978&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Anderson, R. Hunter AU - Long, G. Cornell AU - Porter, Ronald C. AU - Anderson, Janet K. T1 - Occurrence of select perfluoroalkyl substances at U.S. Air Force aqueous film-forming foam release sites other than fire-training areas: Field-validation of critical fate and transport properties. JO - Chemosphere JF - Chemosphere Y1 - 2016/05// VL - 150 M3 - Article SP - 678 EP - 685 SN - 00456535 AB - The use of aqueous film-forming foam (AFFF) to extinguish hydrocarbon-based fires is recognized as a significant source of environmental poly- and perfluoroalkyl substances (PFASs). Although the occurrence of select PFASs in soil and groundwater at former fire-training areas (FTAs) at military installations operable since 1970 has been consistently confirmed, studies reporting the occurrence of PFASs at other AFFF-impacted sites (e.g. emergency response locations, AFFF lagoons, hangar-related AFFF storage tanks and pipelines, and fire station testing and maintenance areas) are largely missing from the literature. Further, studies have mostly focused on a single site (i.e., FTAs at military installations) and, thus, lack a comparison of sites with diverse AFFF release history. Therefore, the purpose of this investigation was to evaluate select PFAS occurrence at non-FTA sites on active U.S. Air Force installations with historic AFFF use of varying magnitude. Concentrations of fifteen perfluoroalkyl acids (PFAAs) and perfluorooctane sulfonamide (PFOSA), an important PFOS precursor, were measured from several hundred samples among multiple media (i.e., surface soil, subsurface soil, sediment, surface water, and groundwater) collected from forty AFFF-impacted sites across ten installations between March and September 2014, representing one of the most comprehensive datasets on environmental PFAS occurrence to date. Differences in detection frequencies and observed concentrations due to AFFF release volume are presented along with rigorous data analyses that quantitatively demonstrate phase-dependent (i.e., solid-phase vs aqueous-phase) differences in the chemical signature as a function of carbon chain-length and in situ PFOS (and to a slightly lesser extent PFHxS) formation, presumably due to precursor biotransformation. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemosphere is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GROUNDWATER KW - HYDROCARBONS KW - AIR forces KW - MILITARY bases -- Environmental aspects KW - SULFONAMIDES KW - CHEMOSPHERE KW - AFFF KW - Occurrence KW - PFAS KW - PFNA KW - PFOA KW - PFOS N1 - Accession Number: 113592971; Anderson, R. Hunter 1; Email Address: richard.anderson.55@us.af.mil Long, G. Cornell 1 Porter, Ronald C. 2 Anderson, Janet K. 1; Affiliation: 1: Air Force Civil Engineer Center, San Antonio, TX, USA 2: Noblis, San Antonio, TX, USA; Source Info: May2016, Vol. 150, p678; Subject Term: GROUNDWATER; Subject Term: HYDROCARBONS; Subject Term: AIR forces; Subject Term: MILITARY bases -- Environmental aspects; Subject Term: SULFONAMIDES; Subject Term: CHEMOSPHERE; Author-Supplied Keyword: AFFF; Author-Supplied Keyword: Occurrence; Author-Supplied Keyword: PFAS; Author-Supplied Keyword: PFNA; Author-Supplied Keyword: PFOA; Author-Supplied Keyword: PFOS; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; NAICS/Industry Codes: 325411 Medicinal and Botanical Manufacturing; NAICS/Industry Codes: 928110 National Security; NAICS/Industry Codes: 911110 Defence services; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.chemosphere.2016.01.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113592971&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Singleton, Daniel AU - Carter, Campbell AU - Pendleton, Scott J. AU - Brophy, Christopher AU - Sinibaldi, Jose AU - Luginsland, John W. AU - Brown, Michael AU - Stockman, Emanuel AU - Gundersen, Martin A. T1 - The effect of humidity on hydroxyl and ozone production by nanosecond discharges. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2016/05// VL - 167 M3 - Article SP - 164 EP - 171 SN - 00102180 AB - The interplay of humidity and non-equilibrium, transient plasma was studied via ignition experiments in a C 2 H 4 –air mixture, concentration measurements in humid air, and detailed simulations. Hydroxyl (OH) and ozone (O 3 ) produced via non-equilibrium plasma were characterized in a flowing H 2 O–air mixture at atmospheric pressure with varying the levels of humidity using planar laser-induced fluorescence (PLIF) and UV absorption, respectively. The OH, which was created in the discharge streamers, peaked at a concentration of ∼5 × 10 14 /cm 3 and then decayed below 1 × 10 14 /cm 3 after ∼100 µs. O 3 , which is long lived, peaked at a concentration of 1.4 × 10 15 /cm 3 . An increase in humidity from X H 2 O ≈ 0.2% to 1% resulted in a monotonic increase in the concentration of OH and a 67% decrease in that of O 3 . Zero-dimensional Boltzmann modeling of non-equilibrium plasma discharges in humid air showed qualitative agreement with these results and points to the decrease in O concentration (with increasing humidity) as the reason for the decreased O 3 concentration. In spite the dramatic decline in X O 3 with increased humidity, there was no strong commensurate effect on ignition and flame propagation in C 2 H 4 –air mixtures: Peak pressure rise rate was at its maximum value at X H 2 O = 1% but was only 25% less at X H 2 O = 5%. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONEQUILIBRIUM plasmas KW - SYNTHESIS (Chemistry) KW - HYDROXYL group KW - OZONE KW - PLANAR laser-induced fluorescence KW - Hydroxyl KW - Nanosecond pulsed power KW - Non-equilibrium plasma KW - Ozone KW - Planar laser induced florescence KW - Transient plasma ignition N1 - Accession Number: 114524401; Singleton, Daniel 1; Email Address: dsinglet@usc.edu Carter, Campbell 2 Pendleton, Scott J. 1 Brophy, Christopher 3 Sinibaldi, Jose 3 Luginsland, John W. 4 Brown, Michael 2 Stockman, Emanuel 5 Gundersen, Martin A. 1; Affiliation: 1: University of Southern California, Los Angeles, CA 90089, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433 USA 3: Naval Postgraduate School, Monterey, CA 93943, USA 4: NumerEx, Ithaca, NY 14850, USA 5: Princeton University, Princeton, NJ 08544, USA; Source Info: May2016, Vol. 167, p164; Subject Term: NONEQUILIBRIUM plasmas; Subject Term: SYNTHESIS (Chemistry); Subject Term: HYDROXYL group; Subject Term: OZONE; Subject Term: PLANAR laser-induced fluorescence; Author-Supplied Keyword: Hydroxyl; Author-Supplied Keyword: Nanosecond pulsed power; Author-Supplied Keyword: Non-equilibrium plasma; Author-Supplied Keyword: Ozone; Author-Supplied Keyword: Planar laser induced florescence; Author-Supplied Keyword: Transient plasma ignition; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.combustflame.2016.02.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114524401&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Veremyev, Alexander AU - Prokopyev, Oleg AU - Butenko, Sergiy AU - Pasiliao, Eduardo T1 - Exact MIP-based approaches for finding maximum quasi-cliques and dense subgraphs. JO - Computational Optimization & Applications JF - Computational Optimization & Applications Y1 - 2016/05// VL - 64 IS - 1 M3 - Article SP - 177 EP - 214 SN - 09266003 AB - Given a simple graph and a constant $$\gamma \in (0,1]$$ , a $$\gamma $$ -quasi-clique is defined as a subset of vertices that induces a subgraph with an edge density of at least $$\gamma $$ . This well-known clique relaxation model arises in a variety of application domains. The maximum $$\gamma $$ -quasi-clique problem is to find a $$\gamma $$ -quasi-clique of maximum cardinality in the graph and is known to be NP-hard. This paper proposes new mixed integer programming (MIP) formulations for solving the maximum $$\gamma $$ -quasi-clique problem. The corresponding linear programming (LP) relaxations are analyzed and shown to be tighter than the LP relaxations of the MIP models available in the literature on sparse graphs. The developed methodology is naturally generalized for solving the maximum $$f(\cdot )$$ -dense subgraph problem, which, for a given function $$f(\cdot )$$ , seeks for the largest k such that there is a subgraph induced by k vertices with at least f( k) edges. The performance of the proposed exact approaches is illustrated on real-life network instances with up to 10,000 vertices. [ABSTRACT FROM AUTHOR] AB - Copyright of Computational Optimization & Applications is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - INTEGER programming KW - SUBGRAPHS KW - MIXED integer linear programming KW - SPARSE graphs KW - VERTICES (Geometry) KW - Average s-plex KW - Clique relaxation KW - Dense subgraph KW - Mixed integer programming KW - Quasi-clique KW - s-Defective clique N1 - Accession Number: 114515092; Veremyev, Alexander 1; Email Address: averemyev@ufl.edu; Prokopyev, Oleg 2; Email Address: droleg@pitt.edu; Butenko, Sergiy 3; Email Address: butenko@tamu.edu; Pasiliao, Eduardo 4; Email Address: eduardo.pasiliao@eglin.af.mil; Affiliations: 1: Department of Industrial and Systems Engineering, University of Florida, Gainesville 32611-6595 USA; 2: Department of Industrial Engineering, University of Pittsburgh, Pittsburgh 15261 USA; 3: Department of Industrial and Systems Engineering, Texas A&M University, College Station 77843 USA; 4: Munitions Directorate, Air Force Research Laboratory, Eglin AFB 32542 USA; Issue Info: May2016, Vol. 64 Issue 1, p177; Thesaurus Term: RESEARCH; Thesaurus Term: INTEGER programming; Subject Term: SUBGRAPHS; Subject Term: MIXED integer linear programming; Subject Term: SPARSE graphs; Subject Term: VERTICES (Geometry); Author-Supplied Keyword: Average s-plex; Author-Supplied Keyword: Clique relaxation; Author-Supplied Keyword: Dense subgraph; Author-Supplied Keyword: Mixed integer programming; Author-Supplied Keyword: Quasi-clique; Author-Supplied Keyword: s-Defective clique; Number of Pages: 38p; Document Type: Article L3 - 10.1007/s10589-015-9804-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=114515092&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Osborne, Jeffrey AU - Ramji, Sarah AU - Carter, Campbell AU - Peltier, Scott AU - Hammack, Stephen AU - Lee, Tonghun AU - Steinberg, Adam T1 - Simultaneous 10 kHz TPIV, OH PLIF, and CHO PLIF measurements of turbulent flame structure and dynamics. JO - Experiments in Fluids JF - Experiments in Fluids Y1 - 2016/05// VL - 57 IS - 5 M3 - Article SP - 1 EP - 19 SN - 07234864 AB - Simultaneous 10 kHz repetition-rate tomographic particle image velocimetry, hydroxyl planar laser-induced fluorescence (OH PLIF), and formaldehyde (CH $$_2$$ O) PLIF were used to study the structure and dynamics of turbulent premixed flames. The flames investigated span from the classically defined corrugated flamelet regime to conditions at which broadened and/or broken flamelets are expected. Methods are presented for determining 3D flame topologies from the Mie scattering tomography and for tracking features through space and time using theoretical Lagrangian particles. Substantial broadening of the CH $$_2$$ O region is observed with increasing turbulence intensity. However, OH production remains rapid, and the region of OH and CH $$_2$$ O overlap remains thin. Local flame speeds exceeding three times the laminar flame speed are observed in regions of flame-flame interaction. Furthermore, a method of tracking fluid residence time within the CH $$_2$$ O layer is presented and shows that residence time decreases at higher turbulence intensity despite the broader distribution of the CH $$_2$$ O, indicating an increase in local reaction rate. [ABSTRACT FROM AUTHOR] AB - Copyright of Experiments in Fluids is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TOMOGRAPHY KW - METHODOLOGY KW - PARTICLE image velocimetry KW - LASER-induced fluorescence KW - LAGRANGIAN mechanics KW - TURBULENCE N1 - Accession Number: 117357533; Osborne, Jeffrey 1; Email Address: josborne@utias.utoronto.ca Ramji, Sarah 1; Email Address: sramji@utias.utoronto.ca Carter, Campbell 2; Email Address: campbell.carter@us.af.mil Peltier, Scott 2; Email Address: scott.peltier.5@us.af.mil Hammack, Stephen 3; Email Address: shammac2@illinois.edu Lee, Tonghun 3; Email Address: tonghun@illinois.edu Steinberg, Adam 1; Email Address: adam.steinberg@utoronto.ca; Affiliation: 1: University of Toronto Institute for Aerospace Studies , Toronto Canada 2: Air Force Research Laboratory , Wright-Patterson Air Force Base , Dayton USA 3: Department of Mechanical Science and Engineering , University of Illinois at Urbana-Champaign , Urbana USA; Source Info: May2016, Vol. 57 Issue 5, p1; Subject Term: TOMOGRAPHY; Subject Term: METHODOLOGY; Subject Term: PARTICLE image velocimetry; Subject Term: LASER-induced fluorescence; Subject Term: LAGRANGIAN mechanics; Subject Term: TURBULENCE; Number of Pages: 19p; Document Type: Article L3 - 10.1007/s00348-016-2151-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117357533&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liu, Xiaoxiao AU - Mao, Mengjie AU - Liu, Beiye AU - Li, Boxun AU - Wang, Yu AU - Jiang, Hao AU - Barnell, Mark AU - Wu, Qing AU - Yang, Jianhua AU - Li, Hai AU - Chen, Yiran T1 - Harmonica: A Framework of Heterogeneous Computing Systems With Memristor-Based Neuromorphic Computing Accelerators. JO - IEEE Transactions on Circuits & Systems. Part I: Regular Papers JF - IEEE Transactions on Circuits & Systems. Part I: Regular Papers Y1 - 2016/05// VL - 63 IS - 5 M3 - Article SP - 617 EP - 628 SN - 15498328 AB - Following technology scaling, on-chip heterogeneous architecture emerges as a promising solution to combat the power wall of microprocessors. This work presents Harmonica—aframework of heterogeneous computing system enhanced by memristor-based neuromorphic computing accelerators (NCAs). In Harmonica, a conventional pipeline is augmented with a NCA which is designed to speedup artificial neural network (ANN) relevant executions by leveraging the extremely efficient mixed-signal computation capability of nanoscale memristor-based crossbar (MBC) arrays. With the help of a mixed-signal interconnection network (M-Net), the hierarchically arranged MBC arrays can accelerate the computation of a variety of ANNs. Moreover, an inline calibration scheme is proposed to ensure the computation accuracy degradation incurred by the memristor resistance shifting within an acceptable range during NCA executions. Compared to general-purpose processor, Harmonica can achieve on average 27.06 $\times$ performance speedup and 25.23 $\times$ energy savings when the NCA is configured with auto-associative memory (AAM) implementation. If the NCA is configured with multilayer perception (MLP) implementation, the performance speedup and energy savings can be boosted to 178.41 $\times$ and 184.24 $\times$, respectively, with slightly degraded computation accuracy. Moreover, the performance and power efficiency of Harmonica are superior to the designs with either digital neural processing units (D-NPUs) or MBC arrays cooperating with a digital interconnection network. Compared to the baseline of general-purpose processor, the classification rate degradation of Harmonica in MLP or AAM is less than 8% or 4%, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Circuits & Systems. Part I: Regular Papers is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HETEROGENEOUS computing KW - PARALLEL processing (Electronic computers) KW - MEMRISTORS KW - ELECTRIC resistors KW - COMPUTER systems KW - Active appearance model KW - Artificial neural networks KW - Calibration KW - Heterogeneous system KW - Immune system KW - memristor KW - Memristors KW - neuromorphic computing KW - Neuromorphics KW - Training N1 - Accession Number: 116525262; Liu, Xiaoxiao 1 Mao, Mengjie 1 Liu, Beiye 1 Li, Boxun 2 Wang, Yu 2 Jiang, Hao 3 Barnell, Mark 4 Wu, Qing 4 Yang, Jianhua 5 Li, Hai 1 Chen, Yiran 1; Affiliation: 1: Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA, USA 2: Department of Electronics Engineering, Tsinghua University, Beigjing, China 3: Department of Electrical Engineering, San Francisco State University, San Francisco, CA, USA 4: , Air Force Research Laboratory, Rome, NY, USA 5: Department of Electrical and Computer Engineering, University of Massachusetts, Amherst, MA, USA; Source Info: May2016, Vol. 63 Issue 5, p617; Subject Term: HETEROGENEOUS computing; Subject Term: PARALLEL processing (Electronic computers); Subject Term: MEMRISTORS; Subject Term: ELECTRIC resistors; Subject Term: COMPUTER systems; Author-Supplied Keyword: Active appearance model; Author-Supplied Keyword: Artificial neural networks; Author-Supplied Keyword: Calibration; Author-Supplied Keyword: Heterogeneous system; Author-Supplied Keyword: Immune system; Author-Supplied Keyword: memristor; Author-Supplied Keyword: Memristors; Author-Supplied Keyword: neuromorphic computing; Author-Supplied Keyword: Neuromorphics; Author-Supplied Keyword: Training; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); NAICS/Industry Codes: 541512 Computer Systems Design Services; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TCSI.2016.2529279 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116525262&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schuette, Michael L. AU - Green, Andrew J. AU - Leedy, Kevin AU - Crespo, Antonio AU - Tetlak, Stephen E. AU - Sutherlin, Karynn A. AU - Jessen, Gregg H. T1 - Ionic Metal–Oxide TFTs for Integrated Switching Applications. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices Y1 - 2016/05// VL - 63 IS - 5 M3 - Article SP - 1921 EP - 1927 SN - 00189383 AB - Disordered ionic-bonded transition metal oxide thin-film transistors (TFTs) show promise for a variety of dc and RF switching applications, especially those that can leverage their low-temperature, substrate-agnostic process integration potential. In this paper, enhancement-mode zinc-oxide TFTs were fabricated and their switching performance evaluated. These TFTs exhibit the drain-current density of 0.6 A/mm and minimal frequency dispersion, as evidenced by dynamic current–voltage tests. A high-frequency power switch figure of merit $R_{{\mathrm{\scriptscriptstyle ON}}}Q_{G} of 359 \textm\Omega \,\cdot \, nC was experimentally determined for 0.75- \mu \textm long-channel devices, and through scaling 45.9 \textm\Omega \,\cdot \, nC is achievable for 11 V-rated devices (where R\mathrm{\scriptscriptstyle ON} is ON-state drain–source resistance, and QG is gate charge). An RF switch cutoff frequency fc of 25 GHz was measured for the same 0.75- \mu \textm TFT, whereas fc exceeding 500 GHz and power handling in the tens of watts are projected with optimization. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN film transistors KW - METALLIC oxides KW - SWITCHING circuits KW - CURRENT-voltage characteristics KW - PERFORMANCE evaluation KW - Capacitance KW - Cutoff frequency KW - dc switch KW - gate charge KW - II-VI semiconductor materials KW - ionic semiconductors KW - Logic gates KW - monolithic ICs KW - pulse measurements KW - RF switch KW - Switches KW - Switching circuits KW - Thin film transistors KW - thin-film transistors (TFTs) KW - zinc oxide N1 - Accession Number: 114706490; Schuette, Michael L. 1 Green, Andrew J. 1 Leedy, Kevin 1 Crespo, Antonio 1 Tetlak, Stephen E. 1 Sutherlin, Karynn A. 1 Jessen, Gregg H. 1; Affiliation: 1: Aerospace Components Division, Devices for Sensing Branch, Air Force Research Laboratory, Sensors Directorate, Wright Patterson AFB, OH, USA; Source Info: May2016, Vol. 63 Issue 5, p1921; Subject Term: THIN film transistors; Subject Term: METALLIC oxides; Subject Term: SWITCHING circuits; Subject Term: CURRENT-voltage characteristics; Subject Term: PERFORMANCE evaluation; Author-Supplied Keyword: Capacitance; Author-Supplied Keyword: Cutoff frequency; Author-Supplied Keyword: dc switch; Author-Supplied Keyword: gate charge; Author-Supplied Keyword: II-VI semiconductor materials; Author-Supplied Keyword: ionic semiconductors; Author-Supplied Keyword: Logic gates; Author-Supplied Keyword: monolithic ICs; Author-Supplied Keyword: pulse measurements; Author-Supplied Keyword: RF switch; Author-Supplied Keyword: Switches; Author-Supplied Keyword: Switching circuits; Author-Supplied Keyword: Thin film transistors; Author-Supplied Keyword: thin-film transistors (TFTs); Author-Supplied Keyword: zinc oxide; NAICS/Industry Codes: 335313 Switchgear and Switchboard Apparatus Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TED.2016.2544200 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114706490&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Le, Anhduong Q. AU - Sun, L. Z. AU - Miller, Timothy C. T1 - Health Monitoring and Diagnosis of Solid Rocket Motors with Bore Cracks. JO - Journal of Aerospace Engineering JF - Journal of Aerospace Engineering Y1 - 2016/05// VL - 29 IS - 3 M3 - Article SP - 1 EP - 10 SN - 08931321 AB - A finite-element-based computational model is used to investigate the effects of bore cracking on stress distributions in solid rocket motors (SRMs) at various storage temperatures. Capabilities of a rocket-motor health-monitoring system are assessed based on the assumption that the proposed stress sensors are evenly distributed along the circumference of the inside of the motor case. A quantitative relationship is obtained between the crack depth and the sensor data to inversely estimate the size of bore cracks in the motor. It is shown that the proposed type of sensing system can detect critical bore cracks in SRMs. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerospace Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLID propellants KW - FINITE element method KW - SURFACE cracks KW - TEMPERATURE KW - NUMERICAL analysis KW - Damage detection KW - Rocket propellant KW - Solid rocket motor KW - Stress sensor KW - Structural health monitoring KW - Structural integrity KW - Temperature sensor N1 - Accession Number: 114618833; Le, Anhduong Q. 1 Sun, L. Z. 2 Miller, Timothy C. 3; Email Address: timothy.miller.26@us.af.mil; Affiliation: 1: Dept. of Civil and Environmental Engineering, Univ. of California, Irvine, CA 92697-2175 2: Professor, Dept. of Civil and Environmental Engineering, Univ. of California, Irvine, CA 92697-2175 3: Air Force Research Laboratory, RQRP Branch, 10 East Saturn Blvd., Edwards Air Force Base, CA 93524; Source Info: May2016, Vol. 29 Issue 3, p1; Subject Term: SOLID propellants; Subject Term: FINITE element method; Subject Term: SURFACE cracks; Subject Term: TEMPERATURE; Subject Term: NUMERICAL analysis; Author-Supplied Keyword: Damage detection; Author-Supplied Keyword: Rocket propellant; Author-Supplied Keyword: Solid rocket motor; Author-Supplied Keyword: Stress sensor; Author-Supplied Keyword: Structural health monitoring; Author-Supplied Keyword: Structural integrity; Author-Supplied Keyword: Temperature sensor; Number of Pages: 10p; Document Type: Article L3 - 10.1061/(ASCE)AS.1943-5525.0000556 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114618833&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stewart, Eric C. AU - Patil, Mayuresh J. AU - Canfield, Robert A. AU - Snyder, Richard D. T1 - Aeroelastic Shape Optimization of a Flapping Wing. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2016/05// VL - 53 IS - 3 M3 - Article SP - 636 EP - 650 SN - 00218669 AB - This paper presents the theory and results for the shape and structural optimization of a platelike flapping wing. The aeroelastic system is analyzed by coupling an unsteady vortex lattice aerodynamics model with a plate finite element model. The assumptions in the aerodynamic model allow the system of equations to be calculated with the inversion of a single matrix, greatly reducing the computational cost. The design variables are the shape parameters from the modified Zimmerman method and the polynomial coefficients that describe the wing thickness. The wing shape and structure are optimized using two multiobjective optimization formulations. The first optimization minimizes the input power while maximizing the cycle-averaged thrust. The input power is the secondary objective function and is treated as a nonlinear constraint, whereas the cycle-averaged thrust is the primary objective function. A second multiobjective formulation that treats wing mass as the secondary objective function is also performed. The power-thrust-optimal wing designs minimize the contribution of the wing deformation to the input power over the flapping cycle. The mass-optimal shapes maximize the wingspan and tailor the wing thickness such that the wing deformation adds to the thrust. It is shown that, although thrust benefits from added wing deformation, it also adds to the power required to flap the wing. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 117719807; Stewart, Eric C. 1 Patil, Mayuresh J. 2,3 Canfield, Robert A. 3,4 Snyder, Richard D. 3,5,6; Affiliation: 1: NASA, AST Structural Dynamics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060 2: Associate Professor, Department of Aerospace and Ocean Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060 3: Associate Fellow AIAA, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060 4: Professor, Department of Aerospace and Ocean Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060 5: Senior Research Aerospace Engineer, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060 6: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: May2016, Vol. 53 Issue 3, p636; Number of Pages: 15p; Document Type: Article L3 - 10.2514/1.C033278 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117719807&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Padmanabhan, Madhusudan A. AU - Dowell, Earl H. AU - Thomas, Jeffrey P. AU - Pasiliao, Crystal L. T1 - Store-Induced Limit-Cycle Oscillations Due to Nonlinear Wing-Store Attachment. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2016/05// VL - 53 IS - 3 M3 - Article SP - 778 EP - 789 SN - 00218669 AB - Several high-performance fighter aircraft exhibit store-induced limit-cycle oscillations, leading to pilot discomfort, potential structural fatigue, and flight envelope restrictions. The roles of various aerodynamic and structural factors causing the limit-cycle oscillation are not sufficiently understood, and their numerical exploration via time marching is computationally expensive. In this paper, the effects of nonlinear stiffness and damping in the wing-store attachments of the F-16 aircraft are examined, in the presence of steady flow aerodynamic nonlinearity, using the computationally efficient harmonic balance method. Structural mechanisms including cubic restoring force of both softening and hardening types, freeplay, and Coulomb friction are systematically evaluated, and the most likely among these are identified by comparing the computed limit-cycle oscillation results to flight data. An extension of the harmonic balance method to handle nonlinear unsteady aerodynamics along with structural nonlinearity is also proposed to enable rapid and accurate limit-cycle oscillation assessment of candidate store configurations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 117719819; Padmanabhan, Madhusudan A. 1 Dowell, Earl H. 2,3 Thomas, Jeffrey P. 4 Pasiliao, Crystal L. 5,6; Affiliation: 1: Graduate Student, Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708 2: William Holland Hall Professor, Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708 3: Honorary Fellow AIAA, Duke University, Durham, North Carolina 27708 4: Research Assistant Professor, Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708 5: U.S. Air Force Research Laboratory, Eglin Air Force Base, Florida 32542 6: Research Lead, Munitions Directorate, Aerodynamic Sciences Branch, 101 West Eglin Boulevard, Suite 330; Source Info: May2016, Vol. 53 Issue 3, p778; Number of Pages: 12p; Document Type: Article L3 - 10.2514/1.C033577 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117719819&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Singh, Kumar V. AU - Brown, Richard N. AU - Kolonay, Raymond T1 - Receptance-Based Active Aeroelastic Control with Embedded Control Surfaces Having Actuator Dynamics. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2016/05// VL - 53 IS - 3 M3 - Article SP - 830 EP - 845 SN - 00218669 AB - To implement active aeroelastic control, control surfaces on a given wing configuration are moved using actuators having their own dynamic characteristics. The inclusion of actuator dynamics leads to the coupling of aeroelastic and actuator modes, and may result in instability in the closed-loop coupled aeroservoelastic system. During the design phase, various types of actuators may be considered, and hence, the stability and performance of the coupled system needs to be evaluated. In this research, a simultaneous control for aeroelastic and actuator poles is developed, which allows for the desired pole placement in a coupled aeroservoelastic system. This enables flutter boundary extension and suppression of flutter instabilities. The design of the controller is based on the method of receptances and requires the transfer functions associated with the aeroelastic structure and the actuators. This approach also allows the partial control of some selected aeroelastic modes without influencing the actuator modes, which ensures the stability of a coupled aeroservoelastic system irrespective of the selected actuator model. Different wing models having multiple control surfaces have been considered in the simulation. By using the associated numerical receptances, several examples have also been presented to demonstrate the solution strategy and performance of the controller. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 117719824; Singh, Kumar V. 1 Brown, Richard N. 2 Kolonay, Raymond 3,4; Affiliation: 1: Associate Professor, Miami University, Oxford, Ohio 45056 2: Graduate Student, Miami University, Oxford, Ohio 45056 3: Director, Multidisciplinary Science and Technology Center, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433 4: Associate Fellow AIAA, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433; Source Info: May2016, Vol. 53 Issue 3, p830; Number of Pages: 16p; Document Type: Article L3 - 10.2514/1.C033658 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117719824&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lloyd Soderlund, Laurel AU - McKenna, Elizabeth A. AU - Tastad, Katie AU - Paul, Marika T1 - Prevalence of permanent threshold shifts in the United States Air Force hearing conservation program by career field, 2005–2011. JO - Journal of Occupational & Environmental Hygiene JF - Journal of Occupational & Environmental Hygiene Y1 - 2016/05// VL - 13 IS - 5 M3 - Article SP - 383 EP - 392 SN - 15459624 AB - The purpose of this study was to describe changes in hearing, using the permanent threshold shift metric, among United States Air Force servicemembers, including active duty, Reserve and Air National Guard components, for demographics, job categories, and career fields. In the United States Air Force, only servicemembers who are occupationally exposed routinely to hazardous noise are monitored. Audiogram records and demographic variables were analyzed for servicemembers from 2005–2011 using data from the Department of Defense system that captures occupational hearing tests worldwide. Results suggest that occupational hearing loss was larger in males than females, in officers than enlisted populations, and in Reserve and Air National Guard than in active duty. Compared to similar civilian career fields, active duty has lower prevalence rates for occupational hearing loss overall, although Reserve and Air National Guard prevalence rates were more similar to the civilian reported rates. The proportion of personnel with permanent threshold shifts varied between 4.6–16.7% within active duty career fields, which includes 76% of the population for study timeframe. Permanent threshold shift was larger in small job categories, and in jobs that are not considered exposed to hazardous noise routinely which is comparative with results from civilian data analysis of occupational hearing loss. Further investigation into testing practices for Air Force specific groups, use of the system for nonoccupational hearing testing, and challenges to follow-up compliance is warranted. Increased surveillance procedures for occupational hearing loss are needed to address concerns on the prevalence of servicemember hearing loss, the role of recreational and lifestyle factors to contribute the high reported hearing loss prevalence of veterans compared to nonveterans. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Occupational & Environmental Hygiene is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Hearing conservation KW - hearing loss KW - military KW - noise KW - occupational health KW - public health N1 - Accession Number: 114016910; Lloyd Soderlund, Laurel 1; McKenna, Elizabeth A. 2; Tastad, Katie 2; Paul, Marika 3; Affiliations: 1: The Henry M. Jackson Foundation for the Advancement of Military Medicine, Wright-Patterson Air Force Base, Dayton, Ohio; 2: The Epidemiology Consult Service, The United States Air Force School of Aerospace Medicine, Wright-Patterson Air Force Base, Dayton, Ohio; 3: College of Public Health, The Ohio State University, Columbus, Ohio; Issue Info: May2016, Vol. 13 Issue 5, p383; Author-Supplied Keyword: Hearing conservation; Author-Supplied Keyword: hearing loss; Author-Supplied Keyword: military; Author-Supplied Keyword: noise; Author-Supplied Keyword: occupational health; Author-Supplied Keyword: public health; Number of Pages: 10p; Illustrations: 5 Charts; Document Type: Article L3 - 10.1080/15459624.2015.1123814 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=114016910&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 114016910 T1 - Prevalence of permanent threshold shifts in the United States Air Force hearing conservation program by career field, 2005–2011. AU - Lloyd Soderlund, Laurel AU - McKenna, Elizabeth A. AU - Tastad, Katie AU - Paul, Marika Y1 - 2016/05// N1 - Accession Number: 114016910. Language: English. Entry Date: In Process. Revision Date: 20160929. Publication Type: Article. Journal Subset: Biomedical; Double Blind Peer Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 101189458. SP - 383 EP - 392 JO - Journal of Occupational & Environmental Hygiene JF - Journal of Occupational & Environmental Hygiene JA - J OCCUP ENVIRON HYG VL - 13 IS - 5 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd SN - 1545-9624 AD - The Henry M. Jackson Foundation for the Advancement of Military Medicine, Wright-Patterson Air Force Base, Dayton, Ohio AD - The Epidemiology Consult Service, The United States Air Force School of Aerospace Medicine, Wright-Patterson Air Force Base, Dayton, Ohio AD - College of Public Health, The Ohio State University, Columbus, Ohio DO - 10.1080/15459624.2015.1123814 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=114016910&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - James Schneeloch AU - John C Howell T1 - Introduction to the transverse spatial correlations in spontaneous parametric down-conversion through the biphoton birth zone. JO - Journal of Optics JF - Journal of Optics Y1 - 2016/05// VL - 18 IS - 5 M3 - Article SP - 1 EP - 1 SN - 20408978 AB - As a tutorial to the spatial aspects of spontaneous parametric downconversion (SPDC), we present a detailed first-principles derivation of the transverse correlation width of photon pairs in degenerate collinear SPDC. This width defines the size of a biphoton birth zone, the region where the signal and idler photons are likely to be found when conditioning on the position of the destroyed pump photon. Along the way, we discuss the quantum-optical calculation of the amplitude for the SPDC process, as well as its simplified form for nearly collinear degenerate phase matching. Following this, we show how this biphoton amplitude can be approximated with a double-Gaussian wavefunction, and give a brief discussion of the measurement statistics (and subsequent convenience) of such double-Gaussian wavefunctions. Next, we use this approximation to get a simplified estimation of the transverse correlation width, and compare it to more accurate calculations as well as experimental results. We then conclude with a discussion of the concept of a biphoton birth zone, using it to develop intuition for the tradeoff between the first-order spatial coherence and bipohoton correlations in SPDC. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Optics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARAMETRIC downconversion KW - RESEARCH KW - PHOTON pairs KW - GAUSSIAN function KW - WAVE functions KW - QUANTUM optics N1 - Accession Number: 115152171; James Schneeloch 1,2,3,4; Email Address: jfizzix@gmail.com John C Howell 1,2; Email Address: howell@pas.rochester.edu; Affiliation: 1: Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, USA 2: Center for Coherence and Quantum Optics, University of Rochester, Rochester, NY 14627, USA 3: Air Force Research Laboratory, Information Directorate, Rome, NY, 13441, USA 4: Author to whom any correspondence should be addressed.; Source Info: May2016, Vol. 18 Issue 5, p1; Subject Term: PARAMETRIC downconversion; Subject Term: RESEARCH; Subject Term: PHOTON pairs; Subject Term: GAUSSIAN function; Subject Term: WAVE functions; Subject Term: QUANTUM optics; Number of Pages: 1p; Document Type: Article L3 - 10.1088/2040-8978/18/5/053501 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115152171&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McKenzie, Ruel AU - Vlassopoulos, Dimitris T1 - Rheological diagnostic tools for state transitions. JO - Journal of Rheology JF - Journal of Rheology Y1 - 2016/05//May/Jun2016 VL - 60 IS - 3 M3 - Article SP - 367 EP - 378 SN - 01486055 AB - Thermodynamic or kinetic state transitions of six polymeric systems were probed using rheology in isothermal and nonisothermal isochronal experiments. The polymeric systems were representative of three different types of transitions: Gelation, macrophase separation, and orderdisorder transitions. A phenomenological dimensionless parameter termed the relative elasticity, R, was found to be particularly sensitive to these transitions and was finitely bound by the viscous limit and the elastic limit with values of zero and one, respectively. In addition, the (time or temperature) derivative of R and tan δ (with δ being the phase angle) proved to be more sensitive to transitions as compared to the respective pure values. When compared to other methods found in literature, these new phenomenological protocols are found to be robust while providing a convenient and precise means of detecting transitions. Hence, they may complement existing methods, whereas they are beneficial to industrial or other systems exhibiting multiple transitions due to their high sensitivity. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Rheology is the property of Society of Rheology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORDER-disorder transitions KW - THERMODYNAMICS KW - PHASE transformations (Physics) KW - RHEOLOGY KW - ISOTHERMAL processes KW - GELATION -- Kinetics N1 - Accession Number: 115155054; McKenzie, Ruel 1,2 Vlassopoulos, Dimitris 3,4; Email Address: dvlasso@iesl.forth.gr; Affiliation: 1: Institute of Electronic Structure and Laser, Foundation for Research and Technology--Hellas (FORTH), N. Plastira 100, 70013 Heraklion, Crete, Greece 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH 45433 3: Institute of Electronic Structure and Laser, Foundation for Research and Technology--Hellas (FORTH), N. Plastira 100, 71103 Heraklion, Crete, Greece 4: Department of Materials Science and Technology, University of Crete, P. O. Box 2208, 70013 Heraklion, Crete, Greece; Source Info: May/Jun2016, Vol. 60 Issue 3, p367; Subject Term: ORDER-disorder transitions; Subject Term: THERMODYNAMICS; Subject Term: PHASE transformations (Physics); Subject Term: RHEOLOGY; Subject Term: ISOTHERMAL processes; Subject Term: GELATION -- Kinetics; Number of Pages: 12p; Document Type: Article L3 - 10.1122/1.4943983 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115155054&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ferguson, Dale AU - Crabtree, Peter AU - White, Stephen AU - Vayner, Boris T1 - Anomalous Global Positioning System Power Degradation from Arc-Induced Contamination. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2016/05// VL - 53 IS - 3 M3 - Article SP - 464 EP - 470 SN - 00224650 AB - It is well known that many GPS satellites have experienced power degradation in excess of what would be expected from radiation damage on their solar arrays. Originally, contamination was suspected, based on the time behavior and rate of degradation seen. Calorimeters were included on some satellites, and a temperature rise commensurate with the power loss was detected, but subsequent efforts to eliminate line-of-sight paths from the contamination sources were unfruitful in reducing the power degradation. The hypothesis put forward here is that the contamination is the result of solar array arcing over a GPS lifetime. In this paper, we examine this hypothesis, using known characteristics of space solar array arcs, to place limits on the arc rate that would be sufficient to produce the contamination-induced power losses seen on GPS satellites to date. Comparisons with United States Nuclear Detonation Detection System signals on GPS satellites are consistent with at least some of the United States Nuclear Detonation Detection System events being solar array arcs. If the hypothesis can be confirmed, simple measures to prevent arcing on GPS arrays can lower the contamination rate and either increase end-of-life power or allow reduced beginning-of-life power. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 117719399; Ferguson, Dale 1,2 Crabtree, Peter 1,3 White, Stephen 1,3 Vayner, Boris 4,5; Affiliation: 1: U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117 2: Lead for Spacecaft Charging Science and Technology, Space Vehicles Directorate; . Associate Fellow AIAA 3: Space Vehicles Directorate 4: Ohio Aerospace Institute, Brook Park, Ohio 44135 5: Senior Scientist; . Member AIAA; Source Info: May2016, Vol. 53 Issue 3, p464; Number of Pages: 7p; Document Type: Article L3 - 10.2514/1.A33438 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117719399&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parthasarathy, Triplicane A. AU - Przybyla, Craig P. AU - Hay, Randall S. AU - Cinibulk, Michael K. T1 - Modeling Environmental Degradation of SiC-Based Fibers. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2016/05// VL - 99 IS - 5 M3 - Article SP - 1725 EP - 1734 SN - 00027820 AB - Experimental data on grain growth and oxidation kinetics of SiC-based fibers, as well as the accompanying strength degradation, in argon, air, and moist air are interpreted using a mechanistic model. The grain growth from thermal history is modeled using conventional models, and its influence on strength is modeled assuming that the flaw size scales with grain size. The model for fiber oxidation uses available relevant thermodynamic and kinetic data for reactions, vapor pressures, oxygen permeation, and boundary layer effects to capture scale thickness data reported by several prior works, in static or flowing air, moist air, and steam. The effect of the oxide scale on strength was modeled assuming that the flaw size scaled with scale thickness. The resulting model is compared with experimental data and is shown to capture most of the data in the literature on degradation of HiNicalon™ and HiNicalon™ type S fibers. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON carbide -- Crystallography KW - DECOMPOSITION (Chemistry) KW - CRYSTAL growth KW - STRENGTH of materials KW - THERMODYNAMICS N1 - Accession Number: 114603530; Parthasarathy, Triplicane A. 1,2 Przybyla, Craig P. 1 Hay, Randall S. 1 Cinibulk, Michael K. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB 2: UES, Inc.; Source Info: May2016, Vol. 99 Issue 5, p1725; Subject Term: SILICON carbide -- Crystallography; Subject Term: DECOMPOSITION (Chemistry); Subject Term: CRYSTAL growth; Subject Term: STRENGTH of materials; Subject Term: THERMODYNAMICS; Number of Pages: 10p; Illustrations: 1 Chart, 6 Graphs; Document Type: Article L3 - 10.1111/jace.14086 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114603530&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mostajeran, Cyrus AU - Warner, Mark AU - Ware, Taylor H. AU - White, Timothy J. T1 - Encoding Gaussian curvature in glassy and elastomeric liquid crystal solids. JO - Proceedings of the Royal Society A: Mathematical, Physical & Engineering Sciences JF - Proceedings of the Royal Society A: Mathematical, Physical & Engineering Sciences Y1 - 2016/05//5/1/2016 VL - 472 IS - 2189 M3 - Article SP - 1 EP - 16 SN - 13645021 AB - We describe shape transitions of thin, solid nematic sheets with smooth, preprogrammed, in-plane director fields patterned across the surface causing spatially inhomogeneous local deformations. A metric description of the local deformations is used to study the intrinsic geometry of the resulting surfaces upon exposure to stimuli such as light and heat. We highlight specific patterns that encode constant Gaussian curvature of prescribed sign and magnitude. We present the first experimental results for such programmed solids, and they qualitatively support theory for both positive and negative Gaussian curvature morphing from flat sheets on stimulation by light or heat. We review logarithmic spiral patterns that generate cone/anti-cone surfaces, and introduce spiral director fields that encode nonlocalized positive and negative Gaussian curvature on punctured discs, including spherical caps and spherical spindles. Conditions are derived where these cap-like, photomechanically responsive regions can be anchored in inert substrates by designing solutions that ensure compatibility with the geometric constraints imposed by the surrounding media. This integration of such materials is a precondition for their exploitation in new devices. Finally, we consider the radial extension of such director fields to larger sheets using nematic textures defined on annular domains. [ABSTRACT FROM AUTHOR] AB - Copyright of Proceedings of the Royal Society A: Mathematical, Physical & Engineering Sciences is the property of Royal Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAUSSIAN curvature KW - LIQUID crystals KW - ELASTOMERS KW - DEFORMATIONS (Mechanics) KW - CARTESIAN coordinates N1 - Accession Number: 116261619; Mostajeran, Cyrus 1 Warner, Mark 2; Email Address: mw141@cam.ac.uk Ware, Taylor H. 3,4 White, Timothy J. 3; Affiliation: 1: Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, UK 2: Cavendish Laboratory, University of Cambridge, 19 JJ Thomson Avenue, Cambridge CB3 0HE, UK 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 4: Department of Bioengineering, The University of Texas at Dallas, 800WCampbell Road, Richardson, TX 75080, USA; Source Info: 5/1/2016, Vol. 472 Issue 2189, p1; Subject Term: GAUSSIAN curvature; Subject Term: LIQUID crystals; Subject Term: ELASTOMERS; Subject Term: DEFORMATIONS (Mechanics); Subject Term: CARTESIAN coordinates; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325212 Synthetic Rubber Manufacturing; Number of Pages: 16p; Document Type: Article L3 - 10.1098/rspa.2016.0112 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116261619&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Horan, Victoria AU - Adachi, Steve AU - Bak, Stanley T1 - A comparison of approaches for finding minimum identifying codes on graphs. JO - Quantum Information Processing JF - Quantum Information Processing Y1 - 2016/05// VL - 15 IS - 5 M3 - Article SP - 1827 EP - 1848 SN - 15700755 AB - In order to formulate mathematical conjectures likely to be true, a number of base cases must be determined. However, many combinatorial problems are NP-hard and the computational complexity makes this research approach difficult using a standard brute force approach on a typical computer. One sample problem explored is that of finding a minimum identifying code. To work around the computational issues, a variety of methods are explored and consist of a parallel computing approach using MATLAB, an adiabatic quantum optimization approach using a D-Wave quantum annealing processor, and lastly using satisfiability modulo theory (SMT) and corresponding SMT solvers. Each of these methods requires the problem to be formulated in a unique manner. In this paper, we address the challenges of computing solutions to this NP-hard problem with respect to each of these methods. [ABSTRACT FROM AUTHOR] AB - Copyright of Quantum Information Processing is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM graph theory KW - COMBINATORIAL analysis KW - COMPUTATIONAL complexity KW - SATISFIABILITY (Computer science) KW - QUANTUM computing KW - Graph theory KW - Quantum annealing KW - SMT solvers N1 - Accession Number: 114603770; Horan, Victoria 1; Email Address: victoria.horan.1@us.af.mil Adachi, Steve 2; Email Address: steven.h.adachi@lmco.com Bak, Stanley 1; Email Address: stanley.bak.1@us.af.mil; Affiliation: 1: Air Force Research Laboratory Information Directorate, Rome USA 2: Lockheed Martin, Palo Alto USA; Source Info: May2016, Vol. 15 Issue 5, p1827; Subject Term: QUANTUM graph theory; Subject Term: COMBINATORIAL analysis; Subject Term: COMPUTATIONAL complexity; Subject Term: SATISFIABILITY (Computer science); Subject Term: QUANTUM computing; Author-Supplied Keyword: Graph theory; Author-Supplied Keyword: Quantum annealing; Author-Supplied Keyword: SMT solvers; Number of Pages: 22p; Document Type: Article L3 - 10.1007/s11128-016-1240-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114603770&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - French, David M. AU - Shiffler, Don T1 - High power microwave source with a three dimensional printed metamaterial slow-wave structure. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2016/05// VL - 87 IS - 5 M3 - Article SP - 053308-1 EP - 053308-6 SN - 00346748 AB - For over the last decade, the concept of metamaterials has led to new approaches for considering the interaction of radiation with complex structures. However, practical manifestations of such a device operating at high power densities have proven difficult to achieve due to the resonant nature of metamaterials and the resultant high electric fields, which place severe constraints on manufacturing the slow wave structures. In this paper, we describe the first experimental manifestation of a high power microwave device utilizing a metallic slow wave structure (metamaterial-like) fabricated using additive manufacturing. The feasibility of utilizing additive manufacturing as a technique for building these relatively complicated structures has thus been demonstrated. The MW class microwave source operates in the C-band and shows frequency tunablility with electron beam voltage. The basic electromagnetic characteristics of this device, the construction using additive manufacturing, and the basic performance as a microwave oscillator are considered. Due to the tunable nature of the device, it shows promise not only as an oscillator but also as a microwave amplifier. Therefore, the dispersive characteristics and a discussion of the anticipated gain is included as it relates to an amplifier configuration. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATION KW - MICROWAVES KW - ELECTROMAGNETIC waves KW - METAMATERIALS KW - ELECTRIC fields N1 - Accession Number: 115874554; French, David M. 1 Shiffler, Don 1; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Albuquerque, New Mexico 871117, USA; Source Info: 2016, Vol. 87 Issue 5, p053308-1; Subject Term: RADIATION; Subject Term: MICROWAVES; Subject Term: ELECTROMAGNETIC waves; Subject Term: METAMATERIALS; Subject Term: ELECTRIC fields; Number of Pages: 6p; Illustrations: 1 Black and White Photograph, 1 Diagram, 8 Graphs; Document Type: Article L3 - 10.1063/1.4950904 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115874554&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Murphy, Neil T1 - Personal Note. JO - Surface & Interface Analysis: SIA JF - Surface & Interface Analysis: SIA Y1 - 2016/05// VL - 48 IS - 5 M3 - Other SP - 248 EP - 248 SN - 01422421 AB - An introduction is presented in which the editor discusses various reports within the issue on topics including surface analysis, interfaces, and surfaces of semiconductors. KW - SURFACES (Technology) -- Analysis KW - INTERFACES (Physical sciences) KW - SEMICONDUCTORS -- Surfaces N1 - Accession Number: 114436693; Murphy, Neil 1; Affiliation: 1: Air Force Research Laboratory Optics and Photonics,; Source Info: May2016, Vol. 48 Issue 5, p248; Subject Term: SURFACES (Technology) -- Analysis; Subject Term: INTERFACES (Physical sciences); Subject Term: SEMICONDUCTORS -- Surfaces; Number of Pages: 1p; Document Type: Other L3 - 10.1002/sia.5880 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114436693&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2016-11542-056 AN - 2016-11542-056 AU - Alarcon, Gene M. AU - Lyons, Joseph B. AU - Christensen, James C. T1 - The effect of propensity to trust and familiarity on perceptions of trustworthiness over time. JF - Personality and Individual Differences JO - Personality and Individual Differences JA - Pers Individ Dif Y1 - 2016/05// VL - 94 SP - 309 EP - 315 CY - Netherlands PB - Elsevier Science SN - 0191-8869 AD - Alarcon, Gene M., Air Force Research Laboratory, 2215 First St., Bldg 33, Wright Patterson AFB, OH, US, 45433-7604 N1 - Accession Number: 2016-11542-056. Partial author list: First Author & Affiliation: Alarcon, Gene M.; Air Force Research Laboratory, Wright Patterson AFB, OH, US. Release Date: 20160421. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Familiarity; Trust (Social Behavior). Minor Descriptor: Individual Differences; Models. Classification: Group & Interpersonal Processes (3020). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Trustworthiness Scale; Propensity to Trust Scale; Relationship Closeness Inventory DOI: 10.1037/t03601-000. Methodology: Empirical Study; Interview; Mathematical Model; Quantitative Study. References Available: Y. Page Count: 7. Issue Publication Date: May, 2016. Publication History: First Posted Date: Feb 8, 2016; Accepted Date: Jan 18, 2016; Revised Date: Jan 15, 2016; First Submitted Date: Oct 27, 2015. AB - Research on trust has burgeoned in the last two decades. Despite the growing interest in trust, little is known about the differences in trust between familiar and unfamiliar interactions. The current empirical study explored propensity to trust as predictors of trustworthiness over time in familiar and unfamiliar dyads. Utilizing latent growth modeling we found propensity to trust was related to initial perceptions of trustworthiness in unfamiliar pairs but not in familiar pairs. In addition, familiarity was related to initial perceptions of trustworthiness, but familiarity only influenced the change in integrity. However, there were significant differences in change variances between familiar and unfamiliar pairs. Implications of the findings are also discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Trust KW - Trustworthiness KW - Latent growth modeling KW - Multiple models KW - 2016 KW - Familiarity KW - Trust (Social Behavior) KW - Individual Differences KW - Models KW - 2016 U1 - Sponsor: Intelligence Advanced Research Projects Activity (IARPA), Office of the Director of National Intelligence (ODNI). Other Details: via the Air Force Research Laboratory. Recipients: No recipient indicated DO - 10.1016/j.paid.2016.01.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-11542-056&site=ehost-live&scope=site UR - Gene.alarcon.1@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Tiley, J.S. AU - Mahaffey, D.W. AU - Alam, T. AU - Rojhirunsakool, T. AU - Senkov, O. AU - Parthasarthy, T. AU - Banerjee, R. T1 - Strengthening mechanisms in an inertia friction welded nickel-base superalloy. JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2016/04/26/ VL - 662 M3 - Article SP - 26 EP - 35 SN - 09215093 AB - This research investigated the strengthening mechanisms associated with the as-welded microstructure developed during inertia friction welding of dissimilar superalloys LHSR and Mar-M247. The weld interface and heat affected regions of the sample were analyzed using hardness indentation techniques and subsequently characterized using SEM, TEM and advanced atom probe tomography. The yield strength of the welded joint was modeled to determine the impact of the gradients in the as-welded microstructure on strengthening mechanisms within the LSHR material. Characterization centered on formation of γ′, γ grain size and chemical segregation within the heat affected regions. Results indicate an increased hardness in the vicinity of the weld interface, resulting from the refined dispersion of γ′ and γ grains. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL alloys KW - HEAT resistant alloys KW - INERTIA (Mechanics) KW - METALS -- Mechanical properties KW - STRENGTH of materials KW - FRICTION welding KW - Atom probe tomography KW - Hardness measurement KW - Inertia friction welding KW - Nickel based superalloys KW - Precipitation KW - Strength modeling N1 - Accession Number: 114392804; Tiley, J.S. 1; Email Address: Jaimie.Tiley@us.af.mil Mahaffey, D.W. 1 Alam, T. 2 Rojhirunsakool, T. 2 Senkov, O. 1,3 Parthasarthy, T. 1,3 Banerjee, R. 2; Affiliation: 1: Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA 2: Department of Materials Engineering, University of North Texas, Denton, TX 76203, USA 3: UES, Inc., Dayton, OH 45433, USA; Source Info: Apr2016, Vol. 662, p26; Subject Term: NICKEL alloys; Subject Term: HEAT resistant alloys; Subject Term: INERTIA (Mechanics); Subject Term: METALS -- Mechanical properties; Subject Term: STRENGTH of materials; Subject Term: FRICTION welding; Author-Supplied Keyword: Atom probe tomography; Author-Supplied Keyword: Hardness measurement; Author-Supplied Keyword: Inertia friction welding; Author-Supplied Keyword: Nickel based superalloys; Author-Supplied Keyword: Precipitation; Author-Supplied Keyword: Strength modeling; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.msea.2016.03.030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114392804&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Glavin, Nicholas R. AU - Muratore, Christopher AU - Jespersen, Michael L. AU - Hu, Jianjun AU - Hagerty, Phillip T. AU - Hilton, Al M. AU - Blake, Austin T. AU - Grabowski, Christopher A. AU - Durstock, Michael F. AU - McConney, Michael E. AU - Hilgefort, Drew M. AU - Fisher, Timothy S. AU - Voevodin, Andrey A. T1 - Amorphous Boron Nitride: A Universal, Ultrathin Dielectric For 2D Nanoelectronics. JO - Advanced Functional Materials JF - Advanced Functional Materials Y1 - 2016/04/25/ VL - 26 IS - 16 M3 - Article SP - 2640 EP - 2647 SN - 1616301X AB - Next-generation nanoelectronics based on 2D materials ideally will require reliable, flexible, transparent, and versatile dielectrics for transistor gate barriers, environmental passivation layers, capacitor spacers, and other device elements. Ultrathin amorphous boron nitride of thicknesses from 2 to 17 nm, described in this work, may offer these attributes, as the material is demonstrated to be universal in structure and stoichiometric chemistry on numerous substrates including flexible polydimethylsiloxane, amorphous silicon dioxide, crystalline Al2O3, other 2D materials including graphene, 2D MoS2, and conducting metals and metal foils. The versatile, large area pulsed laser deposition growth technique is performed at temperatures less than 200 °C and without modifying processing conditions, allowing for seamless integration into 2D device architectures. A device-scale dielectric constant of 5.9 ± 0.65 at 1 kHz, breakdown voltage of 9.8 ± 1.0 MV cm−1, and bandgap of 4.5 eV were measured for various thicknesses of the ultrathin a-BN material, representing values higher than previously reported chemical vapor deposited h-BN and nearing single crystal h-BN. [ABSTRACT FROM AUTHOR] AB - Copyright of Advanced Functional Materials is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOELECTRONICS KW - RESEARCH KW - TWO-dimensional materials (Nanotechnology) KW - DIELECTRICS -- Research KW - BORON nitride KW - STOICHIOMETRY KW - CHEMICAL vapor deposition KW - METAL foils KW - 2D KW - boron nitride KW - nanoelectronics KW - ultrathin dielectrics N1 - Accession Number: 114818447; Glavin, Nicholas R. 1,2 Muratore, Christopher 3 Jespersen, Michael L. 1,4 Hu, Jianjun 1,4 Hagerty, Phillip T. 1,4 Hilton, Al M. 1,5 Blake, Austin T. 1 Grabowski, Christopher A. 1,6 Durstock, Michael F. 1 McConney, Michael E. 1 Hilgefort, Drew M. 1,4 Fisher, Timothy S. 2 Voevodin, Andrey A. 7; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB 2: School of Mechanical Engineering and Birck Nanotechnology Center, Purdue University 3: University of Dayton 4: University of Dayton Research Laboratory 5: Wyle Laboratories 6: UES Inc. 7: Materials Science and Engineering, University of North Texas; Source Info: 4/25/2016, Vol. 26 Issue 16, p2640; Subject Term: NANOELECTRONICS; Subject Term: RESEARCH; Subject Term: TWO-dimensional materials (Nanotechnology); Subject Term: DIELECTRICS -- Research; Subject Term: BORON nitride; Subject Term: STOICHIOMETRY; Subject Term: CHEMICAL vapor deposition; Subject Term: METAL foils; Author-Supplied Keyword: 2D; Author-Supplied Keyword: boron nitride; Author-Supplied Keyword: nanoelectronics; Author-Supplied Keyword: ultrathin dielectrics; Number of Pages: 8p; Document Type: Article L3 - 10.1002/adfm.201505455 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114818447&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Glavin, Nicholas R. AU - Muratore, Christopher AU - Jespersen, Michael L. AU - Hu, Jianjun AU - Hagerty, Phillip T. AU - Hilton, Al M. AU - Blake, Austin T. AU - Grabowski, Christopher A. AU - Durstock, Michael F. AU - McConney, Michael E. AU - Hilgefort, Drew M. AU - Fisher, Timothy S. AU - Voevodin, Andrey A. T1 - Nanoelectronics: Amorphous Boron Nitride: A Universal, Ultrathin Dielectric For 2D Nanoelectronics (Adv. Funct. Mater. 16/2016). JO - Advanced Functional Materials JF - Advanced Functional Materials Y1 - 2016/04/25/ VL - 26 IS - 16 M3 - Article SP - 2771 EP - 2771 SN - 1616301X KW - NANOELECTRONICS KW - BORON nitride KW - DIELECTRICS KW - 2D KW - boron nitride KW - nanoelectronics KW - ultrathin dielectrics N1 - Accession Number: 114818454; Glavin, Nicholas R. 1,2 Muratore, Christopher 3 Jespersen, Michael L. 1,4 Hu, Jianjun 1,4 Hagerty, Phillip T. 1,4 Hilton, Al M. 1,5 Blake, Austin T. 1 Grabowski, Christopher A. 1,6 Durstock, Michael F. 1 McConney, Michael E. 1 Hilgefort, Drew M. 1,4 Fisher, Timothy S. 2 Voevodin, Andrey A. 7; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB 2: School of Mechanical Engineering and Birck Nanotechnology Center, Purdue University 3: University of Dayton 4: University of Dayton Research Laboratory 5: Wyle Laboratories 6: UES Inc. 7: Materials Science and Engineering, University of North Texas; Source Info: 4/25/2016, Vol. 26 Issue 16, p2771; Subject Term: NANOELECTRONICS; Subject Term: BORON nitride; Subject Term: DIELECTRICS; Author-Supplied Keyword: 2D; Author-Supplied Keyword: boron nitride; Author-Supplied Keyword: nanoelectronics; Author-Supplied Keyword: ultrathin dielectrics; Number of Pages: 1p; Document Type: Article L3 - 10.1002/adfm.201670102 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114818454&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiao, C.Q. AU - Adams, S.F. T1 - Ion chemistries in triethylborane. JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2016/04/25/ VL - 401 M3 - Article SP - 11 EP - 16 SN - 13873806 AB - The absolute total and partial cross sections of electron ionization on triethylborane (TEB) are measured in an electron energy range of 6.6–200 eV. The total cross section reaches a maximum of 2.2 × 10 −15 cm 2 in 65–85 eV energy region. Product ions from the electron ionization include C 2 H 2–5 + , BCH 4 + , BC 2 H 2,4,6 + , BC 3 H 4,6 + , BC 4 H 8,10 + and BC 6 H 15 + , among which BC 6 H 15 + , BC 4 H 10 + and BC 2 H 6 + are the most abundant ions. Gas-phase reactions between TEB and certain major ions from the electron ionization of TEB are studied. Common products from the ion-molecule reactions are BC 4 H 10 + and BC 2 H 6 + , as well as association products for certain heavy-ion reactions. The mechanisms of forming BC 4 H 10 + and BC 2 H 6 + in ion-molecule reactions are believed to be simple ethide transfer and ethide transfer followed by dissociation (loss of C 2 H 4 ), respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BORANES KW - ELECTRON energy states KW - ELECTRON impact ionization KW - CROSS sections (Nuclear physics) KW - CHEMICAL reactions KW - Electron ionization KW - Ion-molecule reactions KW - Triethylborane (TEB) N1 - Accession Number: 114573194; Jiao, C.Q. 1 Adams, S.F. 2; Email Address: amber.hensley.1.ctr@us.af.mil; Affiliation: 1: UES, Inc., Dayton, OH 45432-1894, United States 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7251, United States; Source Info: Apr2016, Vol. 401, p11; Subject Term: BORANES; Subject Term: ELECTRON energy states; Subject Term: ELECTRON impact ionization; Subject Term: CROSS sections (Nuclear physics); Subject Term: CHEMICAL reactions; Author-Supplied Keyword: Electron ionization; Author-Supplied Keyword: Ion-molecule reactions; Author-Supplied Keyword: Triethylborane (TEB); Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.ijms.2016.02.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114573194&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pustovit, Vitaliy N. AU - Urbas, Augustine M. AU - Chipouline, Arkadi V. AU - Shahbazyan, Tigran V. T1 - Coulomb and quenching effects in small nanoparticle-based spasers. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2016/04/22/ VL - 93 IS - 16 M3 - Article SP - 1 EP - 1 SN - 10980121 AB - We study numerically the effect of mode mixing and direct dipole-dipole interactions between gain molecules on spasing in small composite nanoparticles with a metallic core and a dye-doped dielectric shell. By combining Maxwell-Bloch equations with Green's function formalism, we calculate lasing frequency and threshold population inversion for various gain densities in the shell. We find that gain coupling to nonresonant plasmon modes has a negligible effect on spasing threshold. In contrast, the direct dipole-dipole coupling, by causing random shifts of gain molecules' excitation frequencies, hinders reaching the spasing threshold in small systems. We identify a region of parameter space in which spasing can occur considering these effects. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS periodicals KW - NANOPARTICLES KW - DIPOLE-dipole interactions KW - QUENCHING (Chemistry) KW - PUSTOVIT, Vitaliy N. KW - URBAS, Augustine M. KW - CHIPOULINE, Arkadi V. KW - SHAHBAZYAN, Tigran V. N1 - Accession Number: 117454469; Pustovit, Vitaliy N. 1 Urbas, Augustine M. 1 Chipouline, Arkadi V. 2 Shahbazyan, Tigran V. 3; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, USA 2: Institute for Microelectrotechnics and Photonics, Technical University of Darmstadt, Merckstrasse 25, 64283 Darmstadt, Germany 3: Department of Physics, Jackson State University, Jackson, Mississippi 39217, USA; Source Info: Apr2016, Vol. 93 Issue 16, p1; Subject Term: PHYSICS periodicals; Subject Term: NANOPARTICLES; Subject Term: DIPOLE-dipole interactions; Subject Term: QUENCHING (Chemistry); People: PUSTOVIT, Vitaliy N.; People: URBAS, Augustine M.; People: CHIPOULINE, Arkadi V.; People: SHAHBAZYAN, Tigran V.; Number of Pages: 1p; Document Type: Article L3 - 10.1103/PhysRevB.93.165432 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117454469&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yarnell, James E. AU - McCusker, Catherine E. AU - Leeds, Alexander J. AU - Breaux, Josué M. AU - Castellano, Felix N. T1 - Exposing the Excited-State Equilibrium in an IrIII Bichromophore: A Combined Time Resolved Spectroscopy and Computational Study. JO - European Journal of Inorganic Chemistry JF - European Journal of Inorganic Chemistry Y1 - 2016/04/21/ VL - 2016 IS - 12 M3 - Article SP - 1808 EP - 1818 SN - 14341948 AB - The electronic structure and photophysical properties of a luminescent IrIII bis-cyclometalated complex covalently attached to one 4-piperidinyl-1,8-naphthalimide (PNI) chromophore through a coordinated 1,10-phenanthroline, [Ir(ppy)2(phen-PNI)](PF6), is presented. This bichromophore represents a new class of visible light-harvesting IrIII complexes that exhibit markedly enhanced room-temperature excited-state lifetimes ( τ = 8.8 ms) as a result of intervening ligand-centered triplet states present on the pendant naphthalimide chromophore. In this IrIII complex, the intense singlet fluorescence of the pendant PNI chromophore is nearly quantitatively quenched and was found to sensitize the IrIII metal/ligand-to-ligand charge-transfer (MLLCT) excited state. The excited state ultimately returns to the PNI chromophore as a long-lived excited triplet that disposes of its energy by equilibrating with the photoluminescent IrIII MLLCT excited state. Evidence of the excited-state equilibrium is provided through static and dynamic photoluminescence spectroscopy, transient absorption spectroscopy, and time-dependent density functional theory calculations. [ABSTRACT FROM AUTHOR] AB - Copyright of European Journal of Inorganic Chemistry is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC structure KW - PHOSPHORS KW - EXCITED states KW - CHROMOPHORES KW - CRYSTAL photochemistry KW - DENSITY functional theory KW - Chromophores KW - Density functional calculations KW - Electronic structure KW - Iridium KW - Luminescence KW - Photophysics KW - Transient absorption kinetics KW - Triplet states N1 - Accession Number: 114677354; Yarnell, James E. 1,2 McCusker, Catherine E. 1 Leeds, Alexander J. 2 Breaux, Josué M. 2 Castellano, Felix N. 1; Affiliation: 1: Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, USA, 2: Department of Chemistry & Chemistry Research Center, United States Air Force Academy, Colorado Springs, Colorado 80840-6230 USA; Source Info: Apr2016, Vol. 2016 Issue 12, p1808; Subject Term: ELECTRONIC structure; Subject Term: PHOSPHORS; Subject Term: EXCITED states; Subject Term: CHROMOPHORES; Subject Term: CRYSTAL photochemistry; Subject Term: DENSITY functional theory; Author-Supplied Keyword: Chromophores; Author-Supplied Keyword: Density functional calculations; Author-Supplied Keyword: Electronic structure; Author-Supplied Keyword: Iridium; Author-Supplied Keyword: Luminescence; Author-Supplied Keyword: Photophysics; Author-Supplied Keyword: Transient absorption kinetics; Author-Supplied Keyword: Triplet states; Number of Pages: 11p; Document Type: Article L3 - 10.1002/ejic.201600194 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114677354&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harvey, Benjamin G. AU - Guenthner, Andrew J. AU - Koontz, Thomas A. AU - Storch, Perrin J. AU - Reams, Josiah T. AU - Groshens, Thomas J. T1 - Sustainable hydrophobic thermosetting resins and polycarbonates from turpentine. JO - Green Chemistry JF - Green Chemistry Y1 - 2016/04/21/ VL - 18 IS - 8 M3 - Article SP - 2416 EP - 2423 SN - 14639262 AB - Carvacrol is a renewable phenol that can be derived from abundant components of pine resin. To demonstrate the utility of carvacrol for polymer applications, a bisphenol was synthesized from carvacrol and converted to both a cyanate ester resin (CarvCy) and polycarbonate. A cured resin disk prepared from CarvCy exhibited a Tg of 224 °C and a water uptake of only 0.7% after being immersed in 85 °C water for four days. The wet Tg of the material was only 3 °C lower than the dry Tg showing that the cured resin was virtually unaffected by exposure to hot water. Despite the presence of aliphatic groups on the aromatic rings, the cured resin exhibited good thermal stability with only 5% weight loss at 390 °C. The polycarbonate prepared from carvacrol had Mn = 10 200, Mw/Mn = 1.60, Tg = 119 °C, and even better thermal stability than the cyanate ester with 5% weight loss observed at 421 °C. The results provide compelling evidence that the sustainable phenol carvacrol can be used as a platform molecule for the generation of high performance polymers with exceptional properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Green Chemistry is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROPHOBIC interactions KW - THERMOSETTING composites KW - GUMS & resins KW - TURPENTINE KW - POLYCARBONATES N1 - Accession Number: 114612312; Harvey, Benjamin G. 1 Guenthner, Andrew J. 2 Koontz, Thomas A. 1 Storch, Perrin J. 1 Reams, Josiah T. 3 Groshens, Thomas J. 1; Affiliation: 1: US NAVY, NAWCWD, Research Department, Chemistry Division, China Lake, California 93555, USA 2: Air Force Research Laboratory, Rocket Propulsion Division, Edwards AFB, California 93524, USA 3: ERC, Inc., Air Force Research Laboratory, Rocket Propulsion Division, Edwards AFB, California 93524, USA; Source Info: 4/21/2016, Vol. 18 Issue 8, p2416; Subject Term: HYDROPHOBIC interactions; Subject Term: THERMOSETTING composites; Subject Term: GUMS & resins; Subject Term: TURPENTINE; Subject Term: POLYCARBONATES; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1039/c5gc02893k UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114612312&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kazunobu Kobayashi AU - Moon Soo Bak AU - Hiroki Tanaka AU - Campbell Carter AU - Hyungrok Do T1 - Laser-induced breakdown emission in hydrocarbon fuel mixtures. JO - Journal of Physics: D Applied Physics JF - Journal of Physics: D Applied Physics Y1 - 2016/04/20/ VL - 49 IS - 15 M3 - Article SP - 1 EP - 1 SN - 00223727 AB - Time-resolved emission measurements of laser-induced breakdown plasmas have been carried out to investigate the effect that gas species might have on the kinetics, particularly in excited states, and the resulting plasma properties. For this purpose, fuel–oxygen (O2)–carbon dioxide (CO2) mixtures with either helium (He) or nitrogen (N2) balance are prepared while maintaining their atomic compositions. The fuels tested in this study are methane (CH4), ethylene (C2H4), propane (C3H8), and butane (C4H10). The breakdown is produced in the mixtures (CH4/CO2/O2/He, C2H4/O2/He, C3H8/CO2/O2/He and C4H10/CO2/O2/He or CH4/CO2/O2/N2, C2H4/O2/N2, C3H8/CO2/O2/N2 and C4H10/CO2/O2/N2) at room conditions using the second harmonic of a Q-switched Nd:YAG laser (with pulse duration of 10 ns). The temporal evolution of plasma temperature is deduced from the ratio of two oxygen lines (777 nm and 823 nm) through Boltzmann analysis, while the evolution of electron number density is estimated based on Stark broadening of the Balmer-alpha (Hα) line at 656 nm and the measured plasma temperature. From the results, the temporal evolution of emission spectra and decay rates of atomic line-intensities are found to be almost identical between the breakdown plasma in the different mixtures given balancing gases. Furthermore, the temporal evolution of plasma temperature and electron number density are also found to be independent of the species compositions. Therefore, this behavior—of the breakdown emissions and plasma properties in the different mixtures with identical atomic composition—may be because the breakdown gases reach similar thermodynamic and physiochemical states immediately after the breakdown. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: D Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER-induced breakdown spectroscopy KW - FOSSIL fuels KW - EXCITED states KW - SECOND harmonic generation KW - Q-switched lasers KW - NEODYMIUM lasers N1 - Accession Number: 113954554; Kazunobu Kobayashi 1,2 Moon Soo Bak 3; Email Address: moonsoo@skku.edu Hiroki Tanaka 1 Campbell Carter 4 Hyungrok Do 2,5; Affiliation: 1: Energy Technology Laboratories, Osaka Gas Co., Ltd, Torishima, Konohana-ku, Osaka, Japan 2: Aerospace and Mechanical Engineering Department, University of Notre Dame, Notre Dame, IN, USA 3: School of Mechanical Engineering, Sungkyunkwan University, Suwon-si, Gyeonggi-do, Korea 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, USA 5: Department of Mechanical and Aerospace Engineering, Seoul National University, Korea; Source Info: 4/20/2016, Vol. 49 Issue 15, p1; Subject Term: LASER-induced breakdown spectroscopy; Subject Term: FOSSIL fuels; Subject Term: EXCITED states; Subject Term: SECOND harmonic generation; Subject Term: Q-switched lasers; Subject Term: NEODYMIUM lasers; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0022-3727/49/15/155201 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113954554&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parthasarathy, T.A. AU - Porter, W.J. AU - Buchanan, D.J. AU - John, R. T1 - Development of a microstructure-sensitive design tool for high temperature strain rate sensitive flow stress of IN100 Ni-base superalloy. JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2016/04/20/ VL - 661 M3 - Article SP - 247 EP - 253 SN - 09215093 AB - A physics based microstructure-sensitive design tool that predicts the flow stress of an IN100 superalloy as a function of temperature and strain rate was developed. The model calibration/validation included new experimental data of strain-rate sensitive high temperature flow stress data obtained on an IN100 alloy with a novel microstructure of coarse-grains that include grain boundary primary precipitates of Ni 3 Al(γ′), intragranular coarse secondary γ′ and a high volume fraction of coarse tertiary γ′. The model was realized by extending prior work on an athermal yield model developed using discrete dislocation dynamics simulations along with prior literature data on standard microstructures of IN100. The thermally activated component of the yield model was obtained by including an yield stress dependent creep model formulated originally by Wilshire and Scharning (2009) [1], and by invoking a temperature dependent Anti-Phase Boundary (APB) energy based on a formalism that captures high temperature order parameter of Ni 3 Al. The resultant model was found to capture experimental data on flow stress from current work in addition to reported data on IN100, including the standard subsolvus and supersolvus heat treat conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL alloys KW - METALS -- Microstructure KW - EFFECT of high temperatures on metals KW - STRAIN rate (Materials science) KW - STRAINS & stresses (Mechanics) KW - METALS -- Heat treatment KW - Design tool KW - Flow stress KW - High temperature KW - IN100 KW - Strain-rate sensitive N1 - Accession Number: 114129030; Parthasarathy, T.A. 1; Email Address: triplicane.parthasarathy.ctr@us.af.mil Porter, W.J. 2 Buchanan, D.J. 2 John, R. 3; Affiliation: 1: UES Inc., 4401 Dayton-Xenia Rd, Dayton, OH 45432, United States 2: University of Dayton Research Institute, 300 College Park, 45469 United States 3: Air Force Research Laboratory, AFRL/RXCM, WPAFB, OH 45433, United States; Source Info: Apr2016, Vol. 661, p247; Subject Term: NICKEL alloys; Subject Term: METALS -- Microstructure; Subject Term: EFFECT of high temperatures on metals; Subject Term: STRAIN rate (Materials science); Subject Term: STRAINS & stresses (Mechanics); Subject Term: METALS -- Heat treatment; Author-Supplied Keyword: Design tool; Author-Supplied Keyword: Flow stress; Author-Supplied Keyword: High temperature; Author-Supplied Keyword: IN100; Author-Supplied Keyword: Strain-rate sensitive; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.msea.2016.02.074 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114129030&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Godman, Nicholas P. AU - Balaich, Gary J. AU - Iacono, Scott T. T1 - First preparation of low band gap fulvene-modified polynorbornene via ring-opening metathesis polymerization. JO - Chemical Communications JF - Chemical Communications Y1 - 2016/04/18/ VL - 52 IS - 30 M3 - Article SP - 5242 EP - 5245 SN - 13597345 AB - New polymers containing intact pendant-fulvene moieties have been successfully prepared from 1,3-phenyl-6-norbornenylfulvene via ring-opening metathesis polymerization (ROMP). The prepared polyfulvenes have unique electrochemical and photophysical properties which make them interesting candidates for light harvesting materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemical Communications is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENERGY gaps (Physics) KW - FULVENES KW - NORBORNYL group KW - POLYMERIZATION KW - METATHESIS (Chemistry) N1 - Accession Number: 114250481; Godman, Nicholas P. 1 Balaich, Gary J. 1 Iacono, Scott T. 1; Affiliation: 1: Department of Chemistry and Chemistry Research Center, United States Air Force Academy, Colorado Springs, CO 80840, USA; Source Info: 4/18/2016, Vol. 52 Issue 30, p5242; Subject Term: ENERGY gaps (Physics); Subject Term: FULVENES; Subject Term: NORBORNYL group; Subject Term: POLYMERIZATION; Subject Term: METATHESIS (Chemistry); Number of Pages: 4p; Document Type: Article L3 - 10.1039/c6cc00897f UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114250481&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carles, Sophie AU - Saidani, Ghassen AU - Le Garrec, Jean-Luc AU - Guen, Ngary AU - Mitchell, James B.A. AU - Viggiano, Albert A. AU - Shuman, Nicholas S. T1 - Demonstration of the branching ratio inversion for the electron attachment to phosphoryl chloride POCl3 in the gas phase between 300 and 200 K. JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2016/04/16/ VL - 650 M3 - Article SP - 144 EP - 147 SN - 00092614 AB - Electron attachment to phosphoryl chloride (phosphorus oxychloride) POCl 3 has been studied in the gas phase by mass spectrometry at several low temperatures (47.7, 74.5, 169.7 and 199.5 K) with the CRESU method. By measuring over this temperature range and data from [8] , we have demonstrated the inversion of the branching ratio between the exothermic non-dissociative exit channel POCl 3 − and the thermo-neutral dissociative exit channel POCl 2 − + Cl. A kinetic model in terms of statistical theory is used to fit the experimental data. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BRANCHING ratios (Nuclear physics) KW - GAS phase reactions KW - NUCLEAR electron capture KW - OXYCHLORIDES KW - MASS spectrometry N1 - Accession Number: 114495975; Carles, Sophie 1; Email Address: sophie.carles@univ-rennes1.fr Saidani, Ghassen 1 Le Garrec, Jean-Luc 1 Guen, Ngary 1 Mitchell, James B.A. 1 Viggiano, Albert A. 2 Shuman, Nicholas S. 2; Affiliation: 1: Institut de Physique de Rennes, Département de Physique Moléculaire, Astrophysique de Laboratoire, UMR CNRS 6251, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, Albuquerque, NM 87117, USA; Source Info: Apr2016, Vol. 650, p144; Subject Term: BRANCHING ratios (Nuclear physics); Subject Term: GAS phase reactions; Subject Term: NUCLEAR electron capture; Subject Term: OXYCHLORIDES; Subject Term: MASS spectrometry; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.cplett.2016.02.062 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114495975&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sanghavi, Bankim J. AU - Moore, John A. AU - Chávez, Jorge L. AU - Hagen, Joshua A. AU - Kelley-Loughnane, Nancy AU - Chou, Chia-Fu AU - Swami, Nathan S. T1 - Aptamer-functionalized nanoparticles for surface immobilization-free electrochemical detection of cortisol in a microfluidic device. JO - Biosensors & Bioelectronics JF - Biosensors & Bioelectronics Y1 - 2016/04/15/ VL - 78 M3 - Article SP - 244 EP - 252 SN - 09565663 AB - Monitoring the periodic diurnal variations in cortisol from small volume samples of serum or saliva is of great interest, due to the regulatory role of cortisol within various physiological functions and stress symptoms. Current detection assays are immunologically based and require cumbersome antibody immobilization chemistries, thereby limiting the assay versatility, kinetics, and reproducibility. We present a quantitative aptamer-based detection methodology for cortisol that does not require target labeling, capture probe immobilization on the detection surface or wash steps prior to readout. Using a recognition system of aptamer functionalized gold nanoparticles pre-bound with electro-active triamcinolone, the cortisol level is detected based on its competitive binding to the aptamer by following signal from the displaced triamcinolone using square wave voltammetry at patterned graphene-modified electrodes in a microfluidic or nanoslit device. Due to the 3D analyte diffusion profile at the aptamer interface and the ability to enhance the surface area for cortisol capture, this assay shows signal linearity over a five-log analyte concentration range (10 μg/mL to 30 pg/mL) and exhibits rapid binding kinetics with cortisol versus other glucocorticoids, as apparent from the absence of interferences from estradiol, testosterone and progesterone. The assay is carried out within the biologically relevant range for glucocorticoids in serum and saliva matrices, and benchmarked versus ELISA and radioimmunoassays. Based on absence of cumbersome surface immobilization and wash steps for carrying out this assay, its quantitative signal characteristics and its ability to resist interferences from other glucocorticoids, we envision its application towards routine monitoring of cortisol within bio-fluids. [ABSTRACT FROM AUTHOR] AB - Copyright of Biosensors & Bioelectronics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - APTAMERS KW - NANOPARTICLES KW - ELECTROCHEMICAL sensors KW - HYDROCORTISONE KW - MICROFLUIDIC devices KW - SERUM -- Analysis KW - Aptamer KW - Cortisol KW - Microfluidics KW - Nanoslit KW - Voltammetry N1 - Accession Number: 111497789; Sanghavi, Bankim J. 1 Moore, John A. 1 Chávez, Jorge L. 2 Hagen, Joshua A. 2 Kelley-Loughnane, Nancy 2 Chou, Chia-Fu 3 Swami, Nathan S. 1; Email Address: nswami@virginia.edu; Affiliation: 1: Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, VA 22904, USA 2: Air Force Research Laboratory, Human Effectiveness Directorate, 711th Human Performance Wing, Wright-Patterson Air Force Base, Dayton, OH 45433, USA 3: Institute of Physics, Academia Sinica, Taipei-11529, Taiwan; Source Info: Apr2016, Vol. 78, p244; Subject Term: APTAMERS; Subject Term: NANOPARTICLES; Subject Term: ELECTROCHEMICAL sensors; Subject Term: HYDROCORTISONE; Subject Term: MICROFLUIDIC devices; Subject Term: SERUM -- Analysis; Author-Supplied Keyword: Aptamer; Author-Supplied Keyword: Cortisol; Author-Supplied Keyword: Microfluidics; Author-Supplied Keyword: Nanoslit; Author-Supplied Keyword: Voltammetry; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.bios.2015.11.044 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111497789&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shin, Hee Jung AU - Narayanan, Ram M. AU - Asmuth, Mark A. AU - Rangaswamy, Muralidhar T1 - Ultrawideband Noise Radar Tomography: Principles, Simulation, and Experimental Validation. JO - International Journal of Microwave Science & Technology JF - International Journal of Microwave Science & Technology Y1 - 2016/04/10/ M3 - Article SP - 1 EP - 21 SN - 16875826 AB - The paper introduces the principles, simulation results, and hardware implementation of ultrawideband (UWB) noise radar for obtaining tomographic images of various scenarios of rotating cylindrical objects using independent and identically distributed UWB noise waveforms. A UWB noise radar was designed to transmit multiple UWB random noise waveforms over the 3–5 GHz frequency range and to measure the backward scattering data for the validation of the theoretical analysis and numerical simulation results. The reconstructed tomographic images of the rotating cylindrical objects based on experimental results are seen to be in good agreement with the simulation results, which demonstrates the capability of UWB noise radar for complete two-dimensional tomographic image reconstruction of various shaped metallic and dielectric target objects. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Microwave Science & Technology is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TOMOGRAPHY KW - ULTRA-wideband radar KW - ROTATING discs (Engineering) KW - SIMULATION methods & models KW - WAVE analysis N1 - Accession Number: 114398400; Shin, Hee Jung 1 Narayanan, Ram M. 1 Asmuth, Mark A. 1 Rangaswamy, Muralidhar 2; Affiliation: 1: Pennsylvania State University, University Park, PA 16802, USA 2: Air Force Research Laboratory, WPAFB, Dayton, OH 45433, USA; Source Info: 4/10/2016, p1; Subject Term: TOMOGRAPHY; Subject Term: ULTRA-wideband radar; Subject Term: ROTATING discs (Engineering); Subject Term: SIMULATION methods & models; Subject Term: WAVE analysis; Number of Pages: 21p; Document Type: Article L3 - 10.1155/2016/5787895 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114398400&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Horan, Victoria AU - Stevens, Brett T1 - Locating patterns in the de Bruijn torus. JO - Discrete Mathematics JF - Discrete Mathematics Y1 - 2016/04/06/ VL - 339 IS - 4 M3 - Article SP - 1274 EP - 1282 SN - 0012365X AB - The de Bruijn torus (or grid) problem looks to find an n -by- m binary matrix in which every possible j -by- k submatrix appears exactly once. The existence and construction of these binary matrices were determined in the 70s, with generalizations to d -ary matrices in the 80s and 90s. However, these constructions lacked efficient decoding methods, leading to new constructions in the early 2000s. The new constructions develop cross-shaped patterns (rather than rectangular), and rely on a concept known as a half de Bruijn sequence. In this paper, we further advance this construction beyond cross-shape patterns. Furthermore, we show results for universal cycle grids, based off of the one-dimensional universal cycles introduced by Chung, Diaconis, and Graham, in the 90s. These grids have many applications such as robotic vision, location detection, and projective touch-screen displays. [ABSTRACT FROM AUTHOR] AB - Copyright of Discrete Mathematics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DE Bruijn graph KW - TORUS (Geometry) KW - BINARY system (Mathematics) KW - GEOMETRICAL constructions KW - SEQUENCES (Mathematics) KW - GENERALIZATION KW - de Bruijn torus KW - Pseudorandom arrays KW - Universal cycles N1 - Accession Number: 112219202; Horan, Victoria 1; Email Address: victoria.horan.1@us.af.mil Stevens, Brett 2; Email Address: brett@math.carleton.ca; Affiliation: 1: Air Force Research Laboratory, Information Directorate, USA 2: School of Mathematics and Statistics, Carleton University, Canada; Source Info: Apr2016, Vol. 339 Issue 4, p1274; Subject Term: DE Bruijn graph; Subject Term: TORUS (Geometry); Subject Term: BINARY system (Mathematics); Subject Term: GEOMETRICAL constructions; Subject Term: SEQUENCES (Mathematics); Subject Term: GENERALIZATION; Author-Supplied Keyword: de Bruijn torus; Author-Supplied Keyword: Pseudorandom arrays; Author-Supplied Keyword: Universal cycles; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.disc.2015.11.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112219202&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Satko, Daniel P. AU - Shaffer, Joshua B. AU - Tiley, Jaimie S. AU - Semiatin, S. Lee AU - Pilchak, Adam L. AU - Kalidindi, Surya R. AU - Kosaka, Yoji AU - Glavicic, Michael G. AU - Salem, Ayman A. T1 - Effect of microstructure on oxygen rich layer evolution and its impact on fatigue life during high-temperature application of α/β titanium. JO - Acta Materialia JF - Acta Materialia Y1 - 2016/04// VL - 107 M3 - Article SP - 377 EP - 389 SN - 13596454 AB - The near alpha titanium alloy, Ti-6424S, is utilized in many critical high-temperature aerospace components due to its unique properties. However, oxygen ingress during elevated-temperature exposure induces formation of a subsurface brittle oxygen-rich layer (ORL), resulting in a deterioration of mechanical performance. This paper, for the first time, establishes the effect of the underlying microstructure on the formation and evolution of the ORL in α/β titanium alloys. In addition, models were developed to predict (i) the evolution of ORL as a function of the material microstructure, (ii) the effect of ORL on the critical strain for in-service crack initiation, and (iii) estimates of fatigue life of components made from a specific microstructure during in-service high temperature exposure and formation of ORL. In particular, five different microstructures were produced by tailored heat-treatments and thermally exposed at 650 °C up to 420 h. The base metal and the ORL were quantified using microhardness indentations, optical microscopy, and scanning electron microscopy (electron backscatter diffraction (EBSD), backscattered electron (BSE), and secondary electron (SE) imaging). The effective diffusion coefficients (D eff ) for each microstructure were calculated and then integrated into a critical strain model to predict crack initiation strain as a function of exposure time. The predicted ORL thickness was used to estimate fatigue life using experimentally measured crack growth data. The largest D eff coefficient was observed in a colony microstructure, while a basketweave microstructure showed the smallest D eff . For several bimodal microstructures, D eff was noted to increase with increasing area fraction of secondary alpha colonies. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - METALS -- Microstructure KW - FATIGUE life (Materials science) KW - IMPACT (Mechanics) KW - EFFECT of high temperatures on metals KW - OXYGEN KW - α/β titanium alloys KW - Alpha case KW - Lifing KW - Oxygen-rich layer KW - Thermal protection systems N1 - Accession Number: 113668146; Satko, Daniel P. 1; Email Address: dan.satko@icmrl.net Shaffer, Joshua B. 1 Tiley, Jaimie S. 2 Semiatin, S. Lee 2 Pilchak, Adam L. 2 Kalidindi, Surya R. 3 Kosaka, Yoji 4 Glavicic, Michael G. 5 Salem, Ayman A. 1; Affiliation: 1: Materials Resources LLC, 714 E Monument Ave, Suite 130, Dayton, OH 45402, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH, USA 3: Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA 4: TIMET Henderson Technical Lab, Henderson, NV 89015, USA 5: Rolls-Royce Corporation, Indianapolis, IN 46206, USA; Source Info: Apr2016, Vol. 107, p377; Subject Term: TITANIUM alloys; Subject Term: METALS -- Microstructure; Subject Term: FATIGUE life (Materials science); Subject Term: IMPACT (Mechanics); Subject Term: EFFECT of high temperatures on metals; Subject Term: OXYGEN; Author-Supplied Keyword: α/β titanium alloys; Author-Supplied Keyword: Alpha case; Author-Supplied Keyword: Lifing; Author-Supplied Keyword: Oxygen-rich layer; Author-Supplied Keyword: Thermal protection systems; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.actamat.2016.01.058 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113668146&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Riley, John AU - Gambone, Michael D. T1 - Old Wounds, New Warriors. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 2016/04// VL - 42 IS - 2 M3 - Article SP - 344 EP - 361 SN - 0095327X AB - American overseas military operations have become dependent upon private contractors. Thousands of these individuals have suffered casualties as a consequence of employment in high-risk parts of the world. American policy has consistently failed to meet the medical needs of hundreds of thousands of contractors. The root source of this problem is the nature of contracting itself. It is a system defined by a commercial transaction rather than the common bond shared between a citizen and the state. The current and future of costs of this basic disconnect are significant. Contractor casualties have risen at exponential rates. More broadly, policy makers must also confront the state’s obligations to employees who are assuming the risks of outsourced citizenship, a question that pertains to American contractors returning home as well as the vast majority of local national workers left to their own devices once Washington declares its mission complete. [ABSTRACT FROM AUTHOR] AB - Copyright of Armed Forces & Society (0095327X) is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MEDICAL care KW - MILITARY art & science KW - PRIVATE military companies KW - MILITARY policy KW - ARMED Forces KW - RESEARCH KW - UNITED States KW - health care KW - injuries KW - private contractors KW - reform N1 - Accession Number: 113379228; Riley, John 1 Gambone, Michael D. 2; Affiliation: 1: Department of Political Science, United States Air Force Academy, CO, USA 2: Department of History, Kutztown University of Pennsylvania, Reading, PA, USA; Source Info: Apr2016, Vol. 42 Issue 2, p344; Subject Term: MEDICAL care; Subject Term: MILITARY art & science; Subject Term: PRIVATE military companies; Subject Term: MILITARY policy; Subject Term: ARMED Forces; Subject Term: RESEARCH; Subject Term: UNITED States; Author-Supplied Keyword: health care; Author-Supplied Keyword: injuries; Author-Supplied Keyword: private contractors; Author-Supplied Keyword: reform; Number of Pages: 18p; Document Type: Article; Full Text Word Count: 7469 L3 - 10.1177/0095327X15590387 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113379228&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ma, Lin AU - Wu, Yue AU - Lei, Qingchun AU - Xu, Wenjiang AU - Carter, Campbell D. T1 - 3D flame topography and curvature measurements at 5 kHz on a premixed turbulent Bunsen flame. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2016/04// VL - 166 M3 - Article SP - 66 EP - 75 SN - 00102180 AB - This work reports the measurements of three-dimensional (3D) flame topography and curvature of a premixed turbulent Bunsen flame at a rate of 5 kHz, using a technique combining chemiluminescence and tomography. Line-of-sight images of chemiluminescence (termed projections ) of the target flame were recorded by six cameras from different orientations simultaneously at 5 kHz. Based on these projections, a tomography algorithm reconstructed the 3D flame structure, based on which 3D curvature was then calculated. Due to the 3D nature of the data, statistics of flame properties can then be extracted both in temporal and spatial domains. Probability density function (PDF) of flame topography was extracted from a series of 3D measurements, and the PDFs of the flame at different spatial locations were examined. Furthermore, the instantaneously measured 3D flame topography also enabled the calculation of 3D flame curvature (or 2D curvature along an arbitrary orientation). The PDFs of curvature in 2D and 3D were then extracted and compared. These results provide quantification of the flame surface shape in 3D (cylindrical, elliptic, or hyperbolic), illustrating the utility of 3D diagnostics to fully resolve the dynamics of turbulent flames. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THREE-dimensional imaging KW - TOPOGRAPHY KW - CURVATURE -- Measurement KW - TURBULENT flow KW - CHEMILUMINESCENCE KW - PROBABILITY density function KW - 3D measurement KW - Chemiluminesecence KW - Tomography KW - Turbulent combustion N1 - Accession Number: 113667286; Ma, Lin 1,2; Email Address: Linma@vt.edu Wu, Yue 1 Lei, Qingchun 2 Xu, Wenjiang 1 Carter, Campbell D. 3; Affiliation: 1: Department of Aerospace and Ocean Engineering, Virginia Tech, Blacksburg, VA 24060, USA 2: Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24060, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Apr2016, Vol. 166, p66; Subject Term: THREE-dimensional imaging; Subject Term: TOPOGRAPHY; Subject Term: CURVATURE -- Measurement; Subject Term: TURBULENT flow; Subject Term: CHEMILUMINESCENCE; Subject Term: PROBABILITY density function; Author-Supplied Keyword: 3D measurement; Author-Supplied Keyword: Chemiluminesecence; Author-Supplied Keyword: Tomography; Author-Supplied Keyword: Turbulent combustion; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.combustflame.2015.12.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113667286&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Torres, A. AU - Ganley, J. AU - Maji, A. T1 - Experimental and Analytical Techniques for Studying ZBLAN Crystallization in Microgravity. JO - Experimental Techniques JF - Experimental Techniques Y1 - 2016/04// VL - 40 IS - 2 M3 - Article SP - 501 EP - 512 SN - 07328818 AB - One of the promising new areas of materials research is in the field of microgravity. Microgravity experimentation enables new materials to be developed and traditional materials to be improved, which cannot be completed under terrestrial conditions. Recent experiments on ZBLAN (ZrF-BaF-LaF-AlF -NaF) glass have shown that, when heated, there is a crystallization dependency on gravity. This crystallization dependency limits the optical transmissibility of this material, due to crystallites forming during the fiber drawing process. ZBLAN glass has the theoretical potential for optical transmission in the range of 0.3 -7 μm, which would facilitate much needed mid-infrared (IR) fiber technology. Past researchers have completed ZBLAN crystallizationmicrogravity experiments, with limited details on the experimental technique and analysis methods. This study demonstrates an alternative experimental technique for ZBLAN microgravity testing and postprocessing techniques that reveal crystallinity in the sample. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Techniques is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAVY metals -- Analysis KW - GLASS -- Chemistry KW - CRYSTALLIZATION KW - TRANSMISSION of light KW - REDUCED gravity environments KW - Crystallization KW - Microgravity KW - ZBLAN N1 - Accession Number: 117360634; Torres, A. 1; Email Address: ast36@txstate.edu Ganley, J. 2 Maji, A. 3; Affiliation: 1: Department of Engineering Technology , Texas State University , San Marcos 78666 USA 2: Air Force Research Laboratory, Space Vehicles Directorate , Kirtland AFB , Albuquerque USA 3: Department of Civil Engineering , University of New Mexico , Albuquerque USA; Source Info: Apr2016, Vol. 40 Issue 2, p501; Subject Term: HEAVY metals -- Analysis; Subject Term: GLASS -- Chemistry; Subject Term: CRYSTALLIZATION; Subject Term: TRANSMISSION of light; Subject Term: REDUCED gravity environments; Author-Supplied Keyword: Crystallization; Author-Supplied Keyword: Microgravity; Author-Supplied Keyword: ZBLAN; Number of Pages: 12p; Document Type: Article L3 - 10.1007/s40799-016-0052-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117360634&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jones, Anya AU - Medina, Albert AU - Spooner, Hannah AU - Mulleners, Karen T1 - Characterizing a burst leading-edge vortex on a rotating flat plate wing. JO - Experiments in Fluids JF - Experiments in Fluids Y1 - 2016/04// VL - 57 IS - 4 M3 - Article SP - 1 EP - 16 SN - 07234864 AB - Identifying, characterizing, and tracking incoherent vortices in highly separated flows is of interest for the development of new low-order models for unsteady lift prediction. The current work examines several methods to identify vortex burst and characterize a burst leading-edge vortex. Time-resolved stereoscopic PIV was performed on a rotating flat plate wing at Re = 2500. The burst process was found to occur at mid-span and is characterized by axial flow reversal, the entrainment of opposite-sign vorticity, and a rapid expansion of vortex size. A POD analysis revealed that variations in certain mode coefficients are indicative of the flow state changes characteristics of burst. During burst, the leading-edge vortex evolves to a region of inhomogeneous vorticity distributed over a large area. Several methods of defining the vortex size and circulation are evaluated and a combination of these can be used to characterize the leading-edge vortex both pre- and post-burst. [ABSTRACT FROM AUTHOR] AB - Copyright of Experiments in Fluids is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEADING edges (Aerodynamics) KW - VORTEX motion KW - PLATES (Engineering) KW - FLOW separation (Fluid dynamics) KW - AXIAL flow N1 - Accession Number: 113821883; Jones, Anya 1; Email Address: arjones@umd.edu Medina, Albert 2 Spooner, Hannah Mulleners, Karen; Email Address: karen.mulleners@epfl.ch; Affiliation: 1: Department of Aerospace Engineering, University of Maryland, College Park 20742 USA 2: U.S. Air Force Research Laboratory, Wright-Patterson AFB 45433 USA; Source Info: Apr2016, Vol. 57 Issue 4, p1; Subject Term: LEADING edges (Aerodynamics); Subject Term: VORTEX motion; Subject Term: PLATES (Engineering); Subject Term: FLOW separation (Fluid dynamics); Subject Term: AXIAL flow; NAICS/Industry Codes: 332313 Plate Work Manufacturing; Number of Pages: 16p; Document Type: Article L3 - 10.1007/s00348-016-2143-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113821883&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Keller, Austin T. AU - Regan, Laura A. AU - Lundstrom, Craig C. AU - Bower, Nathan W. T1 - Evaluation of the efficacy of spatiotemporal Pb isoscapes for provenancing of human remains. JO - Forensic Science International JF - Forensic Science International Y1 - 2016/04// VL - 261 M3 - journal article SP - 83 EP - 92 SN - 03790738 AB - Geospatially distributed isotopes (isoscapes) from biogeochemically fractionated processes have been applied in many forensic investigations, such as authentication of food and sourcing of drugs. Provenancing of human remains using isotopes has been hindered by a lack of appropriate isoscapes, by changes in these isoscapes over time, and by various homogenization processes. In this study we create spatiotemporal isoscapes for anthropogenic lead (Pb) for the contiguous United States and Europe using literature data from dated sediments, soils and biological tissues. We compare (206)Pb/(207)Pb isoscapes with isoscapes of δ(13)C, δ(18)O and (87)Sr/(86)Sr to determine their relative efficacy for the forensic identification of human remains. We do this comparison using third molar enamel data from 22 United States Air Force Academy cadets with known life trajectories born between 1983 and 1985. We use these spatiotemporal isoscapes with osteologic analyses, hospital records and isotopic analyses of tooth enamel carbonate from permanent teeth to help identify 32 individuals from unmarked graves found in a forgotten 19th century mental asylum cemetery. [ABSTRACT FROM AUTHOR] AB - Copyright of Forensic Science International is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPATIOTEMPORAL processes KW - LEAD isotopes KW - ANTHROPOLOGY KW - DATA analysis KW - COMPARATIVE studies KW - 206 Pb/ 207 Pb KW - Anthropology KW - Forensic science KW - Isoscape KW - Radiogenic KW - Stable isotope N1 - Accession Number: 113825996; Keller, Austin T. 1; Email Address: austin474@gmail.com Regan, Laura A. 2; Email Address: Laura.Regan@usafa.edu Lundstrom, Craig C. 3; Email Address: lundstro@illinois.edu Bower, Nathan W. 1; Email Address: nbower@coloradocollege.edu; Affiliation: 1: Department of Chemistry and Biochemistry, Colorado College, 14 E. Cache La Poudre, Colorado Springs, CO 80903, United States 2: Department of Biology, 2355 Faculty Drive, Suite 2P389, United States Air Force Academy, Colorado Springs, CO 80840-6226, United States 3: Department of Geology, University of Illinois, 605 E. Springfield, MC-235, Champaign, IL 61820, United States; Source Info: Apr2016, Vol. 261, p83; Subject Term: SPATIOTEMPORAL processes; Subject Term: LEAD isotopes; Subject Term: ANTHROPOLOGY; Subject Term: DATA analysis; Subject Term: COMPARATIVE studies; Author-Supplied Keyword: 206 Pb/ 207 Pb; Author-Supplied Keyword: Anthropology; Author-Supplied Keyword: Forensic science; Author-Supplied Keyword: Isoscape; Author-Supplied Keyword: Radiogenic; Author-Supplied Keyword: Stable isotope; Number of Pages: 10p; Document Type: journal article L3 - 10.1016/j.forsciint.2016.02.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113825996&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Feng, Lu AU - Wiltsche, Clemens AU - Humphrey, Laura AU - Topcu, Ufuk T1 - Synthesis of Human-in-the-Loop Control Protocols for Autonomous Systems. JO - IEEE Transactions on Automation Science & Engineering JF - IEEE Transactions on Automation Science & Engineering Y1 - 2016/04// VL - 13 IS - 2 M3 - Article SP - 450 EP - 462 SN - 15455955 AB - We propose an approach to synthesize control protocols for autonomous systems that account for uncertainties and imperfections in interactions with human operators. As an illustrative example, we consider a scenario involving road network surveillance by an unmanned aerial vehicle (UAV) that is controlled remotely by a human operator but also has a certain degree of autonomy. Depending on the type (i.e., probabilistic and/or nondeterministic) of knowledge about the uncertainties and imperfections in the human–automation interactions, we use abstractions based on Markov decision processes and augment these models to stochastic two-player games. Our approach enables the synthesis of operator-dependent optimal mission plans for the UAV, highlighting the effects of operator characteristics (e.g., workload, proficiency, and fatigue) on UAV mission performance. It can also provide informative feedback (e.g., Pareto curves showing the trade-offs between multiple mission objectives), potentially assisting the operator in decision-making. We demonstrate the applicability of our approach via a detailed UAV mission planning case study. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Automation Science & Engineering is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HUMAN-machine systems KW - DRONE aircraft KW - AUTOMATION KW - MARKOV processes KW - STOCHASTIC processes KW - Control protocol synthesis KW - Fatigue KW - Games KW - human factors KW - human–automation interaction KW - Planning KW - probabilistic models and specifications KW - Protocols KW - Roads KW - Stochastic processes KW - unmanned aerial vehicles (UAVs) N1 - Accession Number: 114532816; Feng, Lu 1 Wiltsche, Clemens 2 Humphrey, Laura 3 Topcu, Ufuk 4; Affiliation: 1: Department of Computer and Information Science, University of Pennsylvania, Philadelphia, PA, USA 2: Department of Computer Science, University of Oxford, UK 3: Control Science Center of Excellence, Air Force Research Laboratory, USA 4: Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, USA; Source Info: Apr2016, Vol. 13 Issue 2, p450; Subject Term: HUMAN-machine systems; Subject Term: DRONE aircraft; Subject Term: AUTOMATION; Subject Term: MARKOV processes; Subject Term: STOCHASTIC processes; Author-Supplied Keyword: Control protocol synthesis; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Games; Author-Supplied Keyword: human factors; Author-Supplied Keyword: human–automation interaction; Author-Supplied Keyword: Planning; Author-Supplied Keyword: probabilistic models and specifications; Author-Supplied Keyword: Protocols; Author-Supplied Keyword: Roads; Author-Supplied Keyword: Stochastic processes; Author-Supplied Keyword: unmanned aerial vehicles (UAVs); Number of Pages: 13p; Document Type: Article L3 - 10.1109/TASE.2016.2530623 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114532816&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhang, Xiaodong AU - Clark, Matthew AU - Rattan, Kudip AU - Muse, Jonathan AU - Khalili, Mohsen T1 - Controller Integrity Monitoring in Adaptive Learning Systems Towards Trusted Autonomy. JO - IEEE Transactions on Automation Science & Engineering JF - IEEE Transactions on Automation Science & Engineering Y1 - 2016/04// VL - 13 IS - 2 M3 - Article SP - 491 EP - 501 SN - 15455955 AB - This paper presents a controller integrity monitoring method for a class of second-order nonlinear uncertain systems incorporating neural network-based adaptive control algorithms. The adaptive neural network model is employed to ensure robust tracking performance in the presence of certain modeling uncertainty under consideration during the offline controller design process. Based on Lyapunov stability analysis, an online controller integrity monitoring scheme is developed to detect the occurrence of controller software/algorithm faults and unanticipated physical component faults, which may lead to unstable learning behaviors and malfunctions of the adaptive controller. Adaptive thresholds for detecting controller malfunctions are derived, ensuring the robustness with respect to modeling uncertainty and neural network approximation error. Additionally, the detectability conditions are investigated, characterizing the class of detectable software faults and unanticipated physical faults. An upper bound on the fault detection time is also established. Simulation results are shown to illustrate the effectiveness of the proposed method. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Automation Science & Engineering is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LYAPUNOV stability KW - NONLINEAR systems KW - NEURAL networks (Computer science) KW - ADAPTIVE control systems KW - ALGORITHMS KW - Adaptation models KW - Adaptive learning systems KW - Adaptive systems KW - Algorithm design and analysis KW - Control systems KW - controller malfunction KW - fault detection KW - Monitoring KW - Neural networks KW - Software KW - verification and validation of adaptive control systems N1 - Accession Number: 114532817; Zhang, Xiaodong 1 Clark, Matthew 2 Rattan, Kudip 1 Muse, Jonathan 2 Khalili, Mohsen 1; Affiliation: 1: Department of Electrical Engineering, Wright State University, Dayton, OH, USA 2: Autonomous Control Branch, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, USA; Source Info: Apr2016, Vol. 13 Issue 2, p491; Subject Term: LYAPUNOV stability; Subject Term: NONLINEAR systems; Subject Term: NEURAL networks (Computer science); Subject Term: ADAPTIVE control systems; Subject Term: ALGORITHMS; Author-Supplied Keyword: Adaptation models; Author-Supplied Keyword: Adaptive learning systems; Author-Supplied Keyword: Adaptive systems; Author-Supplied Keyword: Algorithm design and analysis; Author-Supplied Keyword: Control systems; Author-Supplied Keyword: controller malfunction; Author-Supplied Keyword: fault detection; Author-Supplied Keyword: Monitoring; Author-Supplied Keyword: Neural networks; Author-Supplied Keyword: Software; Author-Supplied Keyword: verification and validation of adaptive control systems; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TASE.2016.2535462 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114532817&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Park, Myoungkuk AU - Kalyanam, Krishnamoorthy AU - Darbha, Swaroop AU - Khargonekar, Pramod P. AU - Pachter, Meir AU - Chandler, Phillip R. T1 - Performance Guarantee of an Approximate Dynamic Programming Policy for Robotic Surveillance. JO - IEEE Transactions on Automation Science & Engineering JF - IEEE Transactions on Automation Science & Engineering Y1 - 2016/04// VL - 13 IS - 2 M3 - Article SP - 564 EP - 578 SN - 15455955 AB - This paper is focused on the development and analysis of suboptimal decision algorithms for a collection of robots that assist a remotely located operator in perimeter surveillance. The operator is tasked with the classification of incursions across the perimeter. whenever there is an incursion into the perimeter, an unattended ground sensor (UGS) in the vicinity, signals an alert. A robot services the alert by visiting the alert location, collecting information, e.g., photo and video imagery, and transmitting it to the operator. The accuracy of operator's classification depends on the volume and freshness of information gathered and provided by the robots at locations where incursions occur. There are two competing objectives for a robot: it needs to spend adequate time at an alert location to collect evidence for aiding the operator in accurate classification but it also needs to service other alerts as soon as possible, so that the evidence collected is relevant. The decision problem is to determine the optimal amount of time a robot must spend servicing an alert. The incursions are stochastic and their statistics are assumed to be known. This problem can be posed as a Markov Decision Problem. However, even for two robots and five UGS locations, the number of states is of the order of billions rendering exact dynamic programming methods intractable. Approximate dynamic programming (ADP) via linear programming (LP) provides a way to approximate the value function and derive suboptimal strategies. The novel feature of this paper is the derivation of a tractable lower bound via LP and the construction of a suboptimal policy whose performance improves upon the lower bound. An illustrative perimeter surveillance example corroborates the results derived in this paper. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Automation Science & Engineering is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DYNAMIC programming KW - MARKOV processes KW - ROBOTS KW - ALGORITHMS KW - APPROXIMATION theory KW - Approximate dynamic programming KW - Dynamic programming KW - Equations KW - linear programming KW - Robot sensing systems KW - robotic surveillance KW - stochastic control KW - Surveillance KW - Upper bound KW - Vectors N1 - Accession Number: 114532759; Park, Myoungkuk 1 Kalyanam, Krishnamoorthy 2 Darbha, Swaroop 1 Khargonekar, Pramod P. 3 Pachter, Meir 4 Chandler, Phillip R. 5; Affiliation: 1: Department of Mechanical Engineering, Texas A&M University, College Station, TX, USA 2: InfoSciTex Corporation, Dayton, OH, USA 3: Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL, USA 4: Department of Electrical Engineering, Air Force Institute of Technology, Dayton, OH, USA 5: Autonomous Control Branch, Air Force Research Laboratory, Dayton, OH, USA; Source Info: Apr2016, Vol. 13 Issue 2, p564; Subject Term: DYNAMIC programming; Subject Term: MARKOV processes; Subject Term: ROBOTS; Subject Term: ALGORITHMS; Subject Term: APPROXIMATION theory; Author-Supplied Keyword: Approximate dynamic programming; Author-Supplied Keyword: Dynamic programming; Author-Supplied Keyword: Equations; Author-Supplied Keyword: linear programming; Author-Supplied Keyword: Robot sensing systems; Author-Supplied Keyword: robotic surveillance; Author-Supplied Keyword: stochastic control; Author-Supplied Keyword: Surveillance; Author-Supplied Keyword: Upper bound; Author-Supplied Keyword: Vectors; Number of Pages: 15p; Document Type: Article L3 - 10.1109/TASE.2014.2366295 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114532759&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hilton, Albert M. AU - Heller, Eric R. AU - Dorsey, Donald L. T1 - Electroluminescence Microscopy of Cross-Sectioned AlGaN/GaN High-Electron Mobility Transistors. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices Y1 - 2016/04// VL - 63 IS - 4 M3 - Article SP - 1459 EP - 1463 SN - 00189383 AB - We report an electroluminescence (EL) microscopy study of operating cross-sectioned AlGaN/GaN high-electron mobility transistors. By examining devices in a cross-sectional view, the distribution and intensity of photons emitted from underneath the optically opaque metal of the gate and drain structures can be studied. The location and the shape of EL bright spots were quantitatively compared with simulated device behavior, revealing a strong correlation between the measured EL intensity and the expected distribution of hot electrons in the channel. Under constant low-power conditions, the bulk of the EL signal migrates from the drain edge of the gate field plate to the drain edge of the source-connected field plate (SCFP) as the drain bias is increased. Hot electrons have been cited as a dominant contributor to device degradation for some devices, so quantifying their location and bias dependence is critical to understanding how this degradation rate might scale with bias and device design. In addition, devices both with and without an SCFP were imaged to quantitatively investigate the influence of the field plate on the EL signal. Finally, a measurement of the spectra of EL signals is used to estimate the temperature of hot electrons in the device. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROLUMINESCENCE KW - GALLIUM nitride -- Electric properties KW - ALUMINUM gallium nitride -- Electric properties KW - LOGIC circuits KW - ENERGY gaps (Physics) KW - AlGaN KW - Aluminum gallium nitride KW - Degradation KW - electrical stress KW - electroluminescence (EL) KW - GaN device modeling KW - HEMTs KW - high-electron mobility transistor (HEMT) KW - hot electrons KW - Logic gates KW - reliability KW - Stress KW - Temperature measurement KW - Wide band gap semiconductors N1 - Accession Number: 114035695; Hilton, Albert M. 1 Heller, Eric R. 2 Dorsey, Donald L. 2; Affiliation: 1: , Wyle Aerospace Group, Dayton, OH, USA 2: Materials Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Apr2016, Vol. 63 Issue 4, p1459; Subject Term: ELECTROLUMINESCENCE; Subject Term: GALLIUM nitride -- Electric properties; Subject Term: ALUMINUM gallium nitride -- Electric properties; Subject Term: LOGIC circuits; Subject Term: ENERGY gaps (Physics); Author-Supplied Keyword: AlGaN; Author-Supplied Keyword: Aluminum gallium nitride; Author-Supplied Keyword: Degradation; Author-Supplied Keyword: electrical stress; Author-Supplied Keyword: electroluminescence (EL); Author-Supplied Keyword: GaN device modeling; Author-Supplied Keyword: HEMTs; Author-Supplied Keyword: high-electron mobility transistor (HEMT); Author-Supplied Keyword: hot electrons; Author-Supplied Keyword: Logic gates; Author-Supplied Keyword: reliability; Author-Supplied Keyword: Stress; Author-Supplied Keyword: Temperature measurement; Author-Supplied Keyword: Wide band gap semiconductors; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TED.2016.2532475 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114035695&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blasch, Kyle AU - Kolivosky, John AU - Hill, Barry T1 - Occupational exposures among personnel working near combined burn pit and incinerator operations at Bagram Airfield, Afghanistan. JO - Inhalation Toxicology JF - Inhalation Toxicology Y1 - 2016/04// VL - 28 IS - 5 M3 - Article SP - 216 EP - 225 SN - 08958378 AB - Occupational air samples were collected at Bagram Airfield Afghanistan for security forces (SF) stationed at the perimeter of the solid waste disposal facility that included a burn pit, air curtain destructors, and solid waste and medical waste incinerators. The objective of the investigation was to quantify inhalation exposures of workers near the disposal facility. Occupational air sample analytes included total particulates not otherwise specified (PNOS), respirable PNOS, acrolein and polyaromatic hydrocarbons (PAH). Exposures were measured for four SF job specialties. Thirty 12-hour shifts were monitored from November 2011 to March 2012. The geometric means for respirable particulate matter and PAH for all job specialties were below the 12-hour adjusted American Conference of Governmental Industrial Hygienists threshold limit value time weighted averages (TLV-TWA). The geometric mean of the respirable particulate matter 12-hour TWAs for the four job specialties ranged from 0.116 to 0.134 mg/m3. One measurement collected at the tower (3.1 mg/m3) position exceeded the TLV-TWA. Naphthalene and pyrene were the only PAHs detected in multiple samples of the 18 PAHs analyzed. The geometric mean concentration for naphthalene was 9.39E-4 mg/m3and the maximum concentration was 0.0051 mg/m3. The geometric mean of acrolein for the four job specialties ranged from 0.021 to 0.047 mg/m3. There were four exceedances of the Occupational Safety and Health Administration 8-hour permissible exposure limit- time weighted average (PEL-TWA), respectively, ranging from 0.13 to 0.32 mg/m3. [ABSTRACT FROM AUTHOR] AB - Copyright of Inhalation Toxicology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Industrial toxicology KW - Polycyclic aromatic hydrocarbons KW - Particulate matter KW - Industrial hygiene KW - Incinerators KW - Waste management KW - Burn pit KW - incinerator KW - inhalation exposure KW - PAH KW - particulate matter KW - American Conference of Governmental Industrial Hygienists N1 - Accession Number: 114678827; Blasch, Kyle 1; Kolivosky, John 2; Hill, Barry 3; Affiliations: 1: USAF, Boise, ID, USA,; 2: US Army Institute for Public Health, Aberdeen Prvoing Ground, MD, USA, and; 3: United States Air Force School of Aerospace Medicine, Wright Patterson AFB, OH, USA; Issue Info: Apr2016, Vol. 28 Issue 5, p216; Thesaurus Term: Industrial toxicology; Thesaurus Term: Polycyclic aromatic hydrocarbons; Thesaurus Term: Particulate matter; Thesaurus Term: Industrial hygiene; Thesaurus Term: Incinerators; Thesaurus Term: Waste management; Author-Supplied Keyword: Burn pit; Author-Supplied Keyword: incinerator; Author-Supplied Keyword: inhalation exposure; Author-Supplied Keyword: PAH; Author-Supplied Keyword: particulate matter ; Company/Entity: American Conference of Governmental Industrial Hygienists; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 236210 Industrial Building Construction; NAICS/Industry Codes: 327390 Other Concrete Product Manufacturing; NAICS/Industry Codes: 333994 Industrial Process Furnace and Oven Manufacturing; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; NAICS/Industry Codes: 562210 Waste treatment and disposal; NAICS/Industry Codes: 562110 Waste collection; NAICS/Industry Codes: 562119 Other Waste Collection; NAICS/Industry Codes: 562212 Solid Waste Landfill; Number of Pages: 10p; Document Type: Article L3 - 10.3109/08958378.2016.1145768 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=114678827&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Martin, Jennifer A. AU - Kwak, Jae AU - Harshman, Sean W. AU - Chan, Karen AU - Fan, Maomian AU - Geier, Brian A. AU - Grigsby, Claude C. AU - Ott, Darrin K. T1 - Field sampling demonstration of portable thermal desorption collection and analysis instrumentation. JO - International Journal of Environmental Analytical Chemistry JF - International Journal of Environmental Analytical Chemistry Y1 - 2016/04// VL - 96 IS - 4 M3 - Article SP - 299 EP - 319 SN - 03067319 AB - The HAPSITE® (Hazardous Air Pollutants on Site) is a portable gas chromatography-mass spectrometry (GC–MS) unit designed to aid air sampling technicians by identifying and quantifying volatile organic compounds from occupational and environmental sampling. The main goal of the present study was to extend prior laboratory-based work with the portable HAPSITE® ER (extended range model) thermal desorption (TD) capability to real-world field samples from both indoor and outdoor environments using different types of active and passive sampling mechanisms. Understanding the performance of the HAPSITE® ER in a realistic field setting will allow air quality sampling technicians to make improved decisions related to sampling and analysis methods in the field. An important finding was that certain charcoal-based TD sorbents were contraindicated for the HAPSITE® ER because of a substantial hydrocarbon bleed which degraded system performance. A novel time series TD sampler (Logistically Enabled Sampling System-Portable [LESS-P]) was validated using Tenax TA TD tubes against standard active sampling across multiple field sampling sites, and the qualitative analytical trends and compound identities were similar between LESS-P replicates analysed via benchtop GC–MS and HAPSITE® ER. Once validated, the LESS-P was used to determine the reference concentrations for passive sampling calculations. The results confirmed the passive sampling methodology within the benchtop system, but highlighted some systemic sensitivity limitations that must be addressed in order for the HAPSITE® to be accurately applied to passive sampling. We propose that the LESS-P time-series sampler may help to alleviate the requirement for sampling technicians to be on-site during active sampling, allowing for automated sampling throughout the duration of a sampling event. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Environmental Analytical Chemistry is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Air sampling KW - Thermal desorption KW - Gas chromatography/Mass spectrometry (GC-MS) KW - Environmental sampling KW - Volatile organic compounds -- Environmental aspects KW - Field sampling KW - GC–MS KW - HAPSITE® ER KW - LESS-P KW - thermal desorption N1 - Accession Number: 114149488; Martin, Jennifer A. 1; Kwak, Jae 2; Harshman, Sean W. 1; Chan, Karen 3; Fan, Maomian 4; Geier, Brian A. 1; Grigsby, Claude C. 4; Ott, Darrin K. 5; Affiliations: 1: UES, Inc., contractor for Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, USA; 2: Research Institute of Wildlife Ecology, University of Veterinary Medicine, Vienna, Austria; 3: METSS, contractor for Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, USA; 4: Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, USA; 5: USAF School of Aerospace Medicine, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, USA; Issue Info: Apr2016, Vol. 96 Issue 4, p299; Thesaurus Term: Air sampling; Thesaurus Term: Thermal desorption; Thesaurus Term: Gas chromatography/Mass spectrometry (GC-MS); Thesaurus Term: Environmental sampling; Thesaurus Term: Volatile organic compounds -- Environmental aspects; Author-Supplied Keyword: Field sampling; Author-Supplied Keyword: GC–MS; Author-Supplied Keyword: HAPSITE® ER; Author-Supplied Keyword: LESS-P; Author-Supplied Keyword: thermal desorption; Number of Pages: 21p; Document Type: Article L3 - 10.1080/03067319.2016.1160384 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=114149488&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Shade, Paul A. AU - Menasche, David B. AU - Bernier, Joel V. AU - Kenesei, Peter AU - Park, Jun-Sang AU - Suter, Robert M. AU - Schuren, Jay C. AU - Turner, Todd J. T1 - Fiducial marker application method for position alignment of in situ multimodal X-ray experiments and reconstructions. JO - Journal of Applied Crystallography JF - Journal of Applied Crystallography Y1 - 2016/04// VL - 49 IS - 2 M3 - Article SP - 700 EP - 704 SN - 00218898 AB - An evolving suite of X-ray characterization methods are presently available to the materials community, providing a great opportunity to gain new insight into material behavior and provide critical validation data for materials models. Two critical and related issues are sample repositioning during an in situ experiment and registration of multiple data sets after the experiment. To address these issues, a method is described which utilizes a focused ion-beam scanning electron microscope equipped with a micromanipulator to apply gold fiducial markers to samples for X-ray measurements. The method is demonstrated with a synchrotron X-ray experiment involving in situ loading of a titanium alloy tensile specimen. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Crystallography is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Research KW - TITANIUM alloys KW - RESEARCH KW - MICROMANIPULATORS KW - MICROELECTROMECHANICAL systems KW - SCANNING electron microscopes KW - fiducial markers KW - HEDM KW - high-energy diffraction microscopy KW - microstructure KW - three-dimensional characterization KW - X-ray diffraction N1 - Accession Number: 115376330; Shade, Paul A. 1 Menasche, David B. 2 Bernier, Joel V. 3 Kenesei, Peter 4 Park, Jun-Sang 4 Suter, Robert M. 2 Schuren, Jay C. 1,5 Turner, Todd J. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: Carnegie Mellon University, Pittsburgh, PA 15213, USA 3: Engineering Directorate, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA 4: Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA 5: Nutonian Inc., Somerville, MA 02144, USA; Source Info: Apr2016, Vol. 49 Issue 2, p700; Subject Term: MATERIALS -- Research; Subject Term: TITANIUM alloys; Subject Term: RESEARCH; Subject Term: MICROMANIPULATORS; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: SCANNING electron microscopes; Author-Supplied Keyword: fiducial markers; Author-Supplied Keyword: HEDM; Author-Supplied Keyword: high-energy diffraction microscopy; Author-Supplied Keyword: microstructure; Author-Supplied Keyword: three-dimensional characterization; Author-Supplied Keyword: X-ray diffraction; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 4p; Document Type: Article L3 - 10.1107/S1600576716001989 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115376330&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beblo, Richard V. AU - Joo, James J. AU - Reich, Gregory W. T1 - Aligning nickel particles for joule heating in epoxy shape memory polymer using a magnetic field and linear vibration. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2016/04// VL - 27 IS - 6 M3 - Article SP - 797 EP - 807 SN - 1045389X AB - One of the major remaining barriers to the widespread adoption of thermally activated shape memory polymer is the method used to heat them. Presented is an investigation into using 5 μm nickel particles aligned into chains as embedded joule heaters for epoxy shape memory polymer. The high density of particle chain heaters reduces the time and energy required to reach transition by minimizing excess heat required due to the low thermal conductivity of the polymer by heating the material more uniformly. The chains are formed by curing the polymer in a uniform magnetic field generated by two sets of N42SH neodymium magnets above and below the sample approximately 57 mm apart. Modeling of the induced magnetic field within and between particles during curing and an analytical model predicting particle mobility in a fluid with respect to vibration frequency and amplitude are presented and discussed in context to this work. Since epoxy resin has a high viscosity, particle mobility is encouraged by sonicating the sample at 300 Hz at an amplitude of approximately 50 μm prior to polymerization using an industrial shaker and Teflon guides. Copper mesh electrodes are attached to the resulting samples using 10% by volume nickel particle shape memory polymer epoxy. Significant particle alignment is confirmed via optical microscope images. Electrical resistivity is measured as low as 57 Ω mm at nickel volume concentrations of 1.0%. Infrared images of the samples during heating are presented, and electrical energy required with respect to sample thermal capacity is estimated. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESISTANCE heating KW - SHAPE memory polymers KW - MAGNETIC fields KW - LINEAR vibration KW - NICKEL compounds KW - PARTICLE density (Nuclear chemistry) KW - reconfigurable structures KW - Shape memory polymer N1 - Accession Number: 114260385; Beblo, Richard V. 1; Email Address: Richard.Beblo@udri.udayton.edu; Joo, James J. 2; Reich, Gregory W. 2; Affiliations: 1: Aerospace Mechanics Division, University of Dayton Research Institute, Dayton, OH, USA; 2: Aerospace Systems Directorate, Air Force Research Laboratory, Dayton, OH, USA; Issue Info: Apr2016, Vol. 27 Issue 6, p797; Subject Term: RESISTANCE heating; Subject Term: SHAPE memory polymers; Subject Term: MAGNETIC fields; Subject Term: LINEAR vibration; Subject Term: NICKEL compounds; Subject Term: PARTICLE density (Nuclear chemistry); Author-Supplied Keyword: reconfigurable structures; Author-Supplied Keyword: Shape memory polymer; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 11p; Document Type: Article; Full Text Word Count: 5983 L3 - 10.1177/1045389X15596625 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=114260385&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Wettemann, Robert T1 - Sacrificing Soldiers on the National Mall. JO - Journal of Military History JF - Journal of Military History Y1 - 2016/04// VL - 80 IS - 2 M3 - Book Review SP - 614 EP - 615 SN - 08993718 KW - WAR memorials KW - NONFICTION KW - WASHINGTON (D.C.) KW - MALL, The (Washington, D.C.) KW - HASS, Kristin Ann KW - SACRIFICING Soldiers on the National Mall (Book) N1 - Accession Number: 113940431; Wettemann, Robert 1; Affiliation: 1: United States Air Force Academy, Colorado Springs, Colorado; Source Info: Apr2016, Vol. 80 Issue 2, p614; Subject Term: WAR memorials; Subject Term: NONFICTION; Subject Term: WASHINGTON (D.C.); Subject Term: MALL, The (Washington, D.C.); Reviews & Products: SACRIFICING Soldiers on the National Mall (Book); People: HASS, Kristin Ann; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113940431&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Butcher, Dennis P. AU - Wadams, Robert C. AU - Drummy, Lawrence AU - Koerner, Hilmar AU - Bailey, Chris AU - Scheltens, Frank AU - Mccomb, David AU - Fabris, Laura AU - Durstock, Michael F. AU - Tabor, Christopher T1 - Controlled dispersion of polystyrene-capped Au nanoparticles in P3 HT: PC61 BM and consequences upon active layer nanostructure. JO - Journal of Polymer Science Part B: Polymer Physics JF - Journal of Polymer Science Part B: Polymer Physics Y1 - 2016/04// VL - 54 IS - 7 M3 - Article SP - 709 EP - 720 SN - 08876266 AB - ABSTRACT Numerous recent publications detail higher absorption and photovoltaic performance within organic photovoltaic (OPV) devices which are loaded with Au or Ag nanoparticles to leverage the light management properties of the localized surface plasmon resonance (LSPR). This report details the impact upon film morphology and polymer/nanoparticle interactions caused by incorporation of polystyrene-coated Au nanoparticles (Au/PS) into the P3HT:PC61BM bulk heterojunction film. Nanostructural analysis by transmission electron microscopy and X-ray scattering reveals tunable Au/PS particle assembly that depends upon the choice of casting solvent, polymer chain length, film drying time, and Au/PS particle loading density. This Au/PS particle assembly has implications on the spectral position of the Au nanoparticle LSPR, which shifts from 535 nm for individually dispersed particles in toluene to 650 nm for particles arranged in large clusters within the P3HT:PC61BM matrix. These results suggest a critical impact from PS/P3HT phase separation, which causes controlled assembly of a separate Au/PS phase in the nanoparticle/OPV composite; controlled Au/PS phase formation provides a blueprint for designing AuNP/OPV hybrid films that impart tunable optical behavior and potentially improve photovoltaic performance. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 709-720 [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Polymer Science Part B: Polymer Physics is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GOLD nanoparticles KW - POLYSTYRENE KW - DISPERSION KW - NANOSTRUCTURED materials KW - PHOTOVOLTAIC power generation KW - SURFACE morphology KW - bulk heterojunction KW - composite KW - localized surface plasmon resonance KW - nanoparticles KW - nanostructure KW - organic photovoltaic KW - plasmonic enhancement KW - self-assembly N1 - Accession Number: 113137384; Butcher, Dennis P. 1 Wadams, Robert C. 2 Drummy, Lawrence 1 Koerner, Hilmar 1 Bailey, Chris 1 Scheltens, Frank 3 Mccomb, David 3 Fabris, Laura 4 Durstock, Michael F. 1 Tabor, Christopher 1; Affiliation: 1: Air Force Research Laboratory 2: Department of Materials Science and Engineering, Nanotechnology for Clean Energy IGERT, Rutgers University 3: Center for Electron Microscopy and AnalysiS (CEMAS), Ohio State University 4: Institute for Advanced Materials Devices and Nanotechnology, Rutgers University; Source Info: Apr2016, Vol. 54 Issue 7, p709; Subject Term: GOLD nanoparticles; Subject Term: POLYSTYRENE; Subject Term: DISPERSION; Subject Term: NANOSTRUCTURED materials; Subject Term: PHOTOVOLTAIC power generation; Subject Term: SURFACE morphology; Author-Supplied Keyword: bulk heterojunction; Author-Supplied Keyword: composite; Author-Supplied Keyword: localized surface plasmon resonance; Author-Supplied Keyword: nanoparticles; Author-Supplied Keyword: nanostructure; Author-Supplied Keyword: organic photovoltaic; Author-Supplied Keyword: plasmonic enhancement; Author-Supplied Keyword: self-assembly; NAICS/Industry Codes: 326140 Polystyrene Foam Product Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1002/polb.23962 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113137384&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chapa, Joseph O. T1 - Reformed Soteriology in Kierkegaard's. JO - Journal of Reformed Theology JF - Journal of Reformed Theology Y1 - 2016/04// VL - 10 IS - 2 M3 - Article SP - 129 EP - 147 SN - 18725163 AB - Johannes Climacus, pseudonymous author of Kierkegaard's Philosophical Fragments, presents to his reader the "absolute paradox." Though initially presented in terms of Socratic and Un-Socratic theories of knowledge, this paper argues that Climacus' paradox is concerned with the tension between soteriological claims about human agency and divine sovereignty. Doesman choose God? Or does God chooseman? Though Climacus draws stark contrasts between the Socratic and the Un-Socratic, he goes to great lengths to retain them both. Through Climacus' synthesis, Kierkegaard demonstrates his acceptance of free will and determinism as an uneasy unity--a kind of unstable equilibrium. This view of Fragments results in an emphasis on human agency that is affirmed in the broader Kierkegaardian corpus: Rather than being paralyzed by one's inability to fathomthe absolute paradox, Kierkegaard insists that onemove forward in spite of the paradox, take the leap, and do Christianity. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Reformed Theology is the property of Brill Academic Publishers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARADOX KW - SALVATION -- Christianity KW - RELIGIOUS aspects KW - absolute paradox KW - Calvinism KW - Climacus KW - Kierkegaard KW - soteriology KW - KIERKEGAARD, Soren, 1813-1855 N1 - Accession Number: 115852774; Chapa, Joseph O. 1; Email Address: joseph.chapa@usafa.edu; Affiliation: 1: US Air Force Academy Colorado Springs, CO, USA; Source Info: 2016, Vol. 10 Issue 2, p129; Subject Term: PARADOX; Subject Term: SALVATION -- Christianity; Subject Term: RELIGIOUS aspects; Author-Supplied Keyword: absolute paradox; Author-Supplied Keyword: Calvinism; Author-Supplied Keyword: Climacus; Author-Supplied Keyword: Kierkegaard; Author-Supplied Keyword: soteriology; People: KIERKEGAARD, Soren, 1813-1855; Number of Pages: 19p; Document Type: Article L3 - 10.1163/15697312-01002014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115852774&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Payne, Brian C. AU - Bredthauer, Jeffery S. AU - Martin, John A. AU - Merrell, Jeffrey C. AD - US Air Force Academy AD - U NE, Omaha AD - US Air Force Academy AD - US Air Force Academy T1 - Minding the Terrazzo Gap between Athletes and Nonathletes: Representativeness, Integration, and Academic Performance at the U.S. Air Force Academy JO - Journal of Sports Economics JF - Journal of Sports Economics Y1 - 2016/04// VL - 17 IS - 3 SP - 302 EP - 320 SN - 15270025 N1 - Accession Number: 1573864; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 201606 N2 - The tension between focusing on collegiate athletic or academic performance has persisted for decades. A recent study finds that recruited athletes in college athletic programs underperform academically, earning lower grades than predicted. It postulates that increased representativeness and integration efforts will enhance the academic value of college athletes' experience. The U.S. Air Force Academy system presents a natural experiment of whether such efforts can affect student-athlete academic performance. In this setting, we find that student-athletes perform comparably to nonathletes after controlling for predicted academic performance. KW - Higher Education; Research Institutions I23 KW - Sports Economics: Industry Studies Z21 L3 - http://jse.sagepub.com/content/by/year UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1573864&site=ehost-live&scope=site UR - http://jse.sagepub.com/content/by/year DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Wall, Alan T. AU - Gee, Kent L. AU - Neilsen, Tracianne B. AU - McKinley, Richard L. AU - James, Michael M. T1 - Military jet noise source imaging using multisource statistically optimized near-field acoustical holography. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2016/04// VL - 139 IS - 4 M3 - Article SP - 1938 EP - 1950 SN - 00014966 AB - The identification of acoustic sources is critical to targeted noise reduction efforts for jets on highperformance tactical aircraft. This paper describes the imaging of acoustic sources from a tactical jet using near-field acoustical holography techniques. The measurement consists of a series of scans over the hologram with a dense microphone array. Partial field decomposition methods are performed to generate coherent holograms. Numerical extrapolation of data beyond the measurement aperture mitigates artifacts near the aperture edges. A multisource equivalent wave model is used that includes the effects of the ground reflection on the measurement. Multisource statistically optimized near-field acoustical holography (M-SONAH) is used to reconstruct apparent source distributions between 20 and 1250 Hz at four engine powers. It is shown that M-SONAH produces accurate field reconstructions for both inward and outward propagation in the region spanned by the physical hologram measurement. Reconstructions across the set of engine powers and frequencies suggests that directivity depends mainly on estimated source location; sources farther downstream radiate at a higher angle relative to the inlet axis. At some frequencies and engine powers, reconstructed fields exhibit multiple radiation lobes originating from overlapped source regions, which is a phenomenon relatively recently reported for full-scale jets. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JET planes -- Noise KW - HOLOGRAPHY KW - NEAR-fields KW - MICROPHONE arrays KW - ACOUSTIC imaging N1 - Accession Number: 114742950; Wall, Alan T. 1; Email Address: alantwall@gmail.com Gee, Kent L. 2 Neilsen, Tracianne B. 2 McKinley, Richard L. 1 James, Michael M. 3; Affiliation: 1: Air Force Research Laboratory, Battlespace Acoustics Branch, Wright-Patterson Air Force Base, Dayton, Ohio 45433, USA 2: Department of Physics and Astronomy, N283 ESC, Brigham Young University, Provo, Utah 84602, USA 3: Blue Ridge Research and Consulting, LLC, Asheville, North Carolina 28801, USA; Source Info: Apr2016, Vol. 139 Issue 4, p1938; Subject Term: JET planes -- Noise; Subject Term: HOLOGRAPHY; Subject Term: NEAR-fields; Subject Term: MICROPHONE arrays; Subject Term: ACOUSTIC imaging; Number of Pages: 13p; Document Type: Article L3 - 10.1121/1.4945719 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114742950&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buffington, Brenda C. AU - Melnyk, Bernadette M. AU - Morales, Shelly AU - Lords, Amanda AU - Zupan, Michael R. T1 - Effects of an energy balance educational intervention and the COPE cognitive behavioral therapy intervention for Division I U.S. Air Force Academy female athletes. JO - Journal of the American Association of Nurse Practitioners JF - Journal of the American Association of Nurse Practitioners Y1 - 2016/04// VL - 28 IS - 4 M3 - Article SP - 181 EP - 187 SN - 23276886 AB - Background and purpose Female athletes struggle harder than male athletes to lose body fat and maintain a leaner physique. The purpose of this study was to determine the effects of an educational and cognitive behavioral therapy (CBT)-based intervention on knowledge, body composition, anxiety, stress, and nutritional intake. Methods A randomized controlled trial was conducted with 153 female athletes from the U.S. Air Force Academy (USAFA). Participants were assigned to one of three groups: (a) a combined energy balance and CBT-based intervention (E1); (b) a CBT-based intervention alone (E2); and (c) a control group (C). Main outcomes included a DXA scan for body composition, a knowledge test, the GAD-7 for anxiety, the brief inventory of perceived stress (BIPS) for stress, and a 24-h food recall. Findings Significant improvement on knowledge of energy balance occurred in all three groups E1 ( p < .001), E2, and C ( p < .05). Significant reductions in percentage of body fat occurred in E1 ( p < .001) and E2 ( p < .05). There also were significant reductions in the percent of fat consumed by E1 ( p < .05) and saturated fat consumed by both E1 and E2 ( p < .05). The control group only demonstrated a significant increase in stress as measured by the BIPS ( p < .05). Conclusions A combined energy balance and CBT-based intervention improves knowledge and body fat. Implications The importance to assess knowledge, anxiety, stress, nutrition intake, and percentage of body fat in female athletes and to deliver evidence-based interventions to improve their health outcomes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Association of Nurse Practitioners is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - cognitive behavioral therapy (CBT) KW - stress KW - stress and coping KW - student health KW - weight management KW - women's health KW - Young adult women N1 - Accession Number: 114679586; Buffington, Brenda C. 1 Melnyk, Bernadette M. 2 Morales, Shelly 3 Lords, Amanda 4 Zupan, Michael R. 5; Affiliation: 1: The Office of the Chief Wellness Officer, College of Nursing, The Ohio State University 2: Department of Pediatrics & Psychiatry, College of Nursing, The Ohio State University 3: United States Air Force Academy 4: CWPX 5: Human Performance Laboratory, United States Air Force Academy; Source Info: Apr2016, Vol. 28 Issue 4, p181; Author-Supplied Keyword: cognitive behavioral therapy (CBT); Author-Supplied Keyword: stress; Author-Supplied Keyword: stress and coping; Author-Supplied Keyword: student health; Author-Supplied Keyword: weight management; Author-Supplied Keyword: women's health; Author-Supplied Keyword: Young adult women; Number of Pages: 7p; Document Type: Article L3 - 10.1002/2327-6924.12359 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114679586&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 114679586 T1 - Effects of an energy balance educational intervention and the COPE cognitive behavioral therapy intervention for Division I U.S. Air Force Academy female athletes. AU - Buffington, Brenda C. AU - Melnyk, Bernadette M. AU - Morales, Shelly AU - Lords, Amanda AU - Zupan, Michael R. Y1 - 2016/04// N1 - Accession Number: 114679586. Language: English. Entry Date: In Process. Revision Date: 20160427. Publication Type: Article. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. NLM UID: 101600770. SP - 181 EP - 187 JO - Journal of the American Association of Nurse Practitioners JF - Journal of the American Association of Nurse Practitioners JA - J AM ASSOC NURSE PRACT VL - 28 IS - 4 CY - Malden, Massachusetts PB - Wiley-Blackwell AB - Background and purpose Female athletes struggle harder than male athletes to lose body fat and maintain a leaner physique. The purpose of this study was to determine the effects of an educational and cognitive behavioral therapy (CBT)-based intervention on knowledge, body composition, anxiety, stress, and nutritional intake. Methods A randomized controlled trial was conducted with 153 female athletes from the U.S. Air Force Academy (USAFA). Participants were assigned to one of three groups: (a) a combined energy balance and CBT-based intervention (E1); (b) a CBT-based intervention alone (E2); and (c) a control group (C). Main outcomes included a DXA scan for body composition, a knowledge test, the GAD-7 for anxiety, the brief inventory of perceived stress (BIPS) for stress, and a 24-h food recall. Findings Significant improvement on knowledge of energy balance occurred in all three groups E1 ( p < .001), E2, and C ( p < .05). Significant reductions in percentage of body fat occurred in E1 ( p < .001) and E2 ( p < .05). There also were significant reductions in the percent of fat consumed by E1 ( p < .05) and saturated fat consumed by both E1 and E2 ( p < .05). The control group only demonstrated a significant increase in stress as measured by the BIPS ( p < .05). Conclusions A combined energy balance and CBT-based intervention improves knowledge and body fat. Implications The importance to assess knowledge, anxiety, stress, nutrition intake, and percentage of body fat in female athletes and to deliver evidence-based interventions to improve their health outcomes. SN - 2327-6886 AD - The Office of the Chief Wellness Officer, College of Nursing, The Ohio State University AD - Department of Pediatrics & Psychiatry, College of Nursing, The Ohio State University AD - United States Air Force Academy AD - CWPX AD - Human Performance Laboratory, United States Air Force Academy DO - 10.1002/2327-6924.12359 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=114679586&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Marasco, Peter L. AU - Bailey, Christopher T1 - Wood lens design philosophy based on a binary additive manufacturing technique. JO - Optical Engineering JF - Optical Engineering Y1 - 2016/04// VL - 55 IS - 4 M3 - Article SP - 040502-1 EP - 040502-4 SN - 00913286 AB - Using additive manufacturing techniques in optical engineering to construct a gradient index (GRIN) optic may overcome a number of limitations of GRIN technology. Such techniques are maturing quickly, yielding additional design degrees of freedom for the engineer. How best to employ these degrees of freedom is not completely clear at this time. This paper describes a preliminary design philosophy, including assumptions, pertaining to a particular printing technique for GRIN optics. It includes an analysis based on simulation and initial component measurement. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THREE-dimensional printing KW - GRADIENT index optics KW - OPTOFLUIDICS KW - REFRACTIVE index KW - MICRORESONATORS (Optoelectronics) KW - gradient-index lens KW - optical path length KW - Wood lens N1 - Accession Number: 115136757; Marasco, Peter L. 1; Email Address: peter.marasco@us.af.mil Bailey, Christopher 2; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, 2241 Avionics Circ., Wright Patterson AFB, Ohio 45433, United States 2: Leidos, 3745 Pentagon Blvd., Beavercreek, Ohio 45431, United States; Source Info: Apr2016, Vol. 55 Issue 4, p040502-1; Subject Term: THREE-dimensional printing; Subject Term: GRADIENT index optics; Subject Term: OPTOFLUIDICS; Subject Term: REFRACTIVE index; Subject Term: MICRORESONATORS (Optoelectronics); Author-Supplied Keyword: gradient-index lens; Author-Supplied Keyword: optical path length; Author-Supplied Keyword: Wood lens; Number of Pages: 4p; Document Type: Article L3 - 10.1117/1.OE.55.4.040502 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115136757&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cheng, Huaining AU - Chung, Soon M. T1 - Orthogonal moment-based descriptors for pose shape query on 3D point cloud patches. JO - Pattern Recognition JF - Pattern Recognition Y1 - 2016/04// VL - 52 M3 - Article SP - 397 EP - 409 SN - 00313203 AB - When 3D sensors such as Light Detection and Ranging (LIDAR) are employed in targeting and recognition of human actions from both ground and aerial platforms, the corresponding point clouds of body shape often comprise low-resolution, disjoint, and irregular patches of points resulted from self-occlusions and viewing angle variations. Many existing 3D shape descriptors designed for shape query and retrieval cannot work effectively with these degenerated point clouds because of their dependency on dense and smooth full-body scans. In this paper, a new degeneracy-tolerable, multi-scale 3D shape descriptor based on the discrete orthogonal Tchebichef moment is proposed as an alternative for single-view partial point cloud representation and characterization. To evaluate the effectiveness of our descriptor, named Tchebichef moment shape descriptor (TMSD), in human shape retrieval, we built a multi-subject pose shape baseline to produce simulated LIDAR captures at different viewing angles and conducted experiments of nearest neighbor search and point cloud reconstruction. The query results show that TMSD performs significantly better than the Fourier descriptor and is slightly better than the wavelet descriptor but more flexible to construct. In addition, we proposed a voxelization scheme that can achieve translation, scale, and resolution invariance, which may be less of a concern in the traditional full-body shape analysis but are crucial requirements for meaningful partial point cloud retrievals. [ABSTRACT FROM AUTHOR] AB - Copyright of Pattern Recognition is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THREE-dimensional imaging KW - CLOUD computing KW - LIDAR (Optics) KW - IMAGE reconstruction KW - WAVELET transforms KW - 3D shape descriptor KW - 3D shape reconstruction KW - 3D shape retrieval KW - Fourier transform KW - LIDAR KW - Point cloud KW - Tchebichef moment KW - Wavelet transform N1 - Accession Number: 111977934; Cheng, Huaining 1,2; Email Address: huaining.cheng@wpafb.af.mil Chung, Soon M. 1,2; Email Address: soon.chung@wright.edu; Affiliation: 1: Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: Department of Computer Science and Engineering, Wright State University, Dayton, OH 45435, USA; Source Info: Apr2016, Vol. 52, p397; Subject Term: THREE-dimensional imaging; Subject Term: CLOUD computing; Subject Term: LIDAR (Optics); Subject Term: IMAGE reconstruction; Subject Term: WAVELET transforms; Author-Supplied Keyword: 3D shape descriptor; Author-Supplied Keyword: 3D shape reconstruction; Author-Supplied Keyword: 3D shape retrieval; Author-Supplied Keyword: Fourier transform; Author-Supplied Keyword: LIDAR; Author-Supplied Keyword: Point cloud; Author-Supplied Keyword: Tchebichef moment; Author-Supplied Keyword: Wavelet transform; NAICS/Industry Codes: 518210 Data Processing, Hosting, and Related Services; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.patcog.2015.09.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111977934&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Connelly, Blair C. AU - Steenbergen, Elizabeth H. AU - Smith, Howard E. AU - Elhamri, Said AU - Mitchel, William C. AU - Mou, Shin AU - Metcalfe, Grace D. AU - Brown, Gail J. AU - Wraback, Michael T1 - Dependence of minority carrier lifetime of Be-doped InAs/InAsSb type-II infrared superlattices on temperature and doping density. JO - Physica Status Solidi (B) JF - Physica Status Solidi (B) Y1 - 2016/04// VL - 253 IS - 4 M3 - Article SP - 630 EP - 634 SN - 03701972 AB - We investigate the minority carrier lifetime of Be-doped InAs/InAsSb type-II superlattices as a function of doping density and temperature using time-resolved photoluminescence (TRPL) to determine if switching the superlattice type from the typical n-type residual carrier concentration to p-type may improve device performance by improving the lifetime-mobility product. The introduction of the Be dopant to the superlattice reduces the carrier lifetime, first by a factor of ∼3 for doping densities near or below the n-type residual carrier concentration, then by an order of magnitude for samples doped well above the residual carrier concentration. Further, the higher-doped p-type samples demonstrate two distinct TRPL decay regimes and two peaks in the PL spectra, suggesting the formation of an additional acceptor-related recombination pathway leading to the observed shorter carrier lifetime. [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi (B) is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - PHOTOLUMINESCENCE KW - GAUSSIAN curvature KW - PHOTODIODES KW - MASS spectrometry KW - beryllium doping KW - InAs KW - minority-carrier lifetime KW - time-resolved photoluminescence KW - type-II superlattices N1 - Accession Number: 114438667; Connelly, Blair C. 1 Steenbergen, Elizabeth H. 2 Smith, Howard E. 3 Elhamri, Said 4 Mitchel, William C. 2 Mou, Shin 2 Metcalfe, Grace D. 1 Brown, Gail J. 2 Wraback, Michael 1; Affiliation: 1: U. S. Army Research Laboratory, Sensors and Electron Devices Directorate 2: U.S. Air Force Research Laboratory, Materials and Manufacturing Directorate 3: University of Dayton Research Institute 4: Department of Physics, University of Dayton; Source Info: Apr2016, Vol. 253 Issue 4, p630; Subject Term: SUPERLATTICES; Subject Term: PHOTOLUMINESCENCE; Subject Term: GAUSSIAN curvature; Subject Term: PHOTODIODES; Subject Term: MASS spectrometry; Author-Supplied Keyword: beryllium doping; Author-Supplied Keyword: InAs; Author-Supplied Keyword: minority-carrier lifetime; Author-Supplied Keyword: time-resolved photoluminescence; Author-Supplied Keyword: type-II superlattices; Number of Pages: 5p; Document Type: Article L3 - 10.1002/pssb.201552497 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114438667&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ngirmang, Gregory K. AU - Orban, Chris AU - Feister, Scott AU - Morrison, John T. AU - Frische, Kyle D. AU - Chowdhury, Enam A. AU - Roquemore, W. M. T1 - Three dimensional particle-in-cell simulations of electron beams created via reflection of intense laser light from a water target. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2016/04// VL - 23 IS - 4 M3 - Article SP - 1 EP - 9 SN - 1070664X AB - We present 3D Particle-in-Cell (PIC) modeling of an ultra-intense laser experiment by the Extreme Light group at the Air Force Research Laboratory using the Large Scale Plasma (LSP) PIC code. This is the first time PIC simulations have been performed in 3D for this experiment which involves an ultra-intense, short-pulse (30 fs) laser interacting with a water jet target at normal incidence. The laser-energy-to-ejected-electron-energy conversion efficiency observed in 2D(3ν) simulations were comparable to the conversion efficiencies seen in the 3D simulations, but the angular distribution of ejected electrons in the 2D(3ν) simulations displayed interesting differences with the 3D simulations' angular distribution; the observed differences between the 2D(3ν) and 3D simulations were more noticeable for the simulations with higher intensity laser pulses. An analytic plane-wave model is discussed which provides some explanation for the angular distribution and energies of ejected electrons in the 2D(3ν) simulations. We also performed a 3D simulation with circularly polarized light and found a significantly higher conversion efficiency and peak electron energy, which is promising for future experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON beams KW - LASER beams KW - WATER -- Analysis KW - ELECTRON energy states KW - ANGULAR distribution (Nuclear physics) KW - PLASMA (Ionized gases) N1 - Accession Number: 115128729; Ngirmang, Gregory K. 1,2; Email Address: ngirmang.1@osu.edu Orban, Chris 1,2 Feister, Scott 1,2 Morrison, John T. 3 Frische, Kyle D. 2 Chowdhury, Enam A. 1,4 Roquemore, W. M. 5; Affiliation: 1: Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA 2: Innovative Scientific Solutions, Inc., Plain City, Ohio 45459, USA 3: National Research Council, Washington, DC 20001, USA 4: Intense Energy Solutions, LLC., Plain City, Ohio 43064, USA 5: Air Force Research Laboratory, WPAFB, Ohio 45433, USA; Source Info: 2016, Vol. 23 Issue 4, p1; Subject Term: ELECTRON beams; Subject Term: LASER beams; Subject Term: WATER -- Analysis; Subject Term: ELECTRON energy states; Subject Term: ANGULAR distribution (Nuclear physics); Subject Term: PLASMA (Ionized gases); Number of Pages: 9p; Illustrations: 3 Diagrams, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.4945739 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115128729&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - J Stephens AU - A Fierro AU - S Beeson AU - G Laity AU - D Trienekens AU - R P Joshi AU - J Dickens AU - A Neuber T1 - Photoionization capable, extreme and vacuum ultraviolet emission in developing low temperature plasmas in air. JO - Plasma Sources Science & Technology JF - Plasma Sources Science & Technology Y1 - 2016/04// VL - 25 IS - 2 M3 - Article SP - 1 EP - 1 SN - 09630252 AB - Experimental observation of photoionization capable extreme ultraviolet and vacuum ultraviolet emission from nanosecond timescale, developing low temperature plasmas (i.e. streamer discharges) in atmospheric air is presented. Applying short high voltage pulses enabled the observation of the onset of plasma formation exclusively by removing the external excitation before spark development was achieved. Contrary to the common assumption that radiative transitions from the b (Birge–Hopfield I) and b (Birge–Hopfield II) singlet states of N2 are the primary contributors to photoionization events, these results indicate that radiative transitions from the c (Carroll–Yoshino) singlet state of N2 are dominant in developing low temperature plasmas in air. In addition to c transitions, photoionization capable transitions from atomic and singly ionized atomic oxygen were also observed. The inclusion of c transitions into a statistical photoionization model coupled with a fluid model enabled streamer growth in the simulation of positive streamers. [ABSTRACT FROM AUTHOR] AB - Copyright of Plasma Sources Science & Technology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOIONIZATION KW - RESEARCH KW - LOW temperature plasmas KW - PLASMA (Ionized gases) -- Research KW - FAR ultraviolet radiation KW - PLASMA physics N1 - Accession Number: 113813162; J Stephens 1 A Fierro 1,2 S Beeson 1,3 G Laity 1,2 D Trienekens 1,4 R P Joshi 1 J Dickens 1 A Neuber 1; Email Address: andreas.neuber@ttu.edu; Affiliation: 1: Texas Tech University Center for Pulsed Power and Power Electronics, Lubbock, TX 79407, USA 2: Sandia National Laboratories, Albuquerque, NM 87123, USA 3: Air Force Research Laboratory, Kirtland AFB, NM 87117, USA 4: Elementary Processes in Gas Discharges, Eindhoven University of Technology, Eindhoven, The Netherlands; Source Info: Apr2016, Vol. 25 Issue 2, p1; Subject Term: PHOTOIONIZATION; Subject Term: RESEARCH; Subject Term: LOW temperature plasmas; Subject Term: PLASMA (Ionized gases) -- Research; Subject Term: FAR ultraviolet radiation; Subject Term: PLASMA physics; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0963-0252/25/2/025024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113813162&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kugblenu, R. K. AU - Paulin, P. S. AU - Tastad, K. J. AU - Okulicz, J. F. T1 - HIV testing patterns for United States Air Force personnel, 2008-2012. JO - Public Health (Elsevier) JF - Public Health (Elsevier) Y1 - 2016/04// VL - 133 M3 - Article SP - 91 EP - 98 SN - 00333506 AB - Objective: This study evaluated 3rd generation human immunodeficiency virus (HIV) test patterns and HIV infection rates in the United States Air Force (USAF). Study design: Retrospective database study. Methods: HIV enzyme-linked immunoassay (ELISA) and Western blot tests were analysed for all USAF personnel from 2008 to 2012. For new HIV cases, unadjusted and adjusted annual rates were calculated per 100,000 persons. Results: In total, 1,608,665 tests were performed in 626,298 individuals, with a reactive ELISA observed in 809 (0.001%) persons. Western blot (n = 1949) results included 378 (19.4%) positive, 1283 (65.8%) negative, and 288 (15.0%) indeterminate (WBi). Unadjusted annual HIV rates were between 16.7 and 20.6 per 100,000 persons during the study period. The overall age-adjusted rate was 14.8 cases per 100,000 persons tested. Blacks/African Americans had the highest risk of HIV (risk ratio 7.9 [95% confidence interval 5.78, 9.95] compared to Whites). Conclusions: WBi results, which can cause delays in determining HIV status, were relatively common with the 3rd generation assay. However, this will be mitigated by a planned transition to a 4th generation assay. Although the overall rate of HIV in the USAF is lower than US civilian adults, HIV prevention efforts targeting young Blacks/African Americans may help to reduce HIV incidence in the USAF. [ABSTRACT FROM AUTHOR] AB - Copyright of Public Health (Elsevier) is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIV infections -- Diagnosis KW - HIV infections -- Epidemiology KW - BLACKS KW - CONFIDENCE intervals KW - ENZYME-linked immunosorbent assay KW - MEDICAL screening KW - WESTERN immunoblotting KW - RETROSPECTIVE studies KW - DESCRIPTIVE statistics KW - UNITED States KW - ELISA KW - HIV incidence KW - HIV infection KW - Indeterminate western blot KW - UNITED States. Air Force N1 - Accession Number: 115445844; Kugblenu, R. K. 1,2 Paulin, P. S. 1 Tastad, K. J. 1 Okulicz, J. F. 3; Email Address: jason.f.okulicz.mil@mail.mil; Affiliation: 1: United States Air Force School of Aerospace Medicine, Public Health and Preventive Medicine Department, Epidemiology Consult Service, Wright-Patterson AFB, OH, USA 2: Oak Ridge Institute for Science and Education, Oak Ridge, TN, USA 3: Infectious Disease Service, San Antonio Military Medical Center, Fort Sam Houston, TX, USA; Source Info: Apr2016, Vol. 133, p91; Subject Term: HIV infections -- Diagnosis; Subject Term: HIV infections -- Epidemiology; Subject Term: BLACKS; Subject Term: CONFIDENCE intervals; Subject Term: ENZYME-linked immunosorbent assay; Subject Term: MEDICAL screening; Subject Term: WESTERN immunoblotting; Subject Term: RETROSPECTIVE studies; Subject Term: DESCRIPTIVE statistics; Subject Term: UNITED States; Author-Supplied Keyword: ELISA; Author-Supplied Keyword: HIV incidence; Author-Supplied Keyword: HIV infection; Author-Supplied Keyword: Indeterminate western blot; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 621999 All Other Miscellaneous Ambulatory Health Care Services; NAICS/Industry Codes: 928110 National Security; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.puhe.2015.11.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115445844&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 115445844 T1 - HIV testing patterns for United States Air Force personnel, 2008-2012. AU - Kugblenu, R. K. AU - Paulin, P. S. AU - Tastad, K. J. AU - Okulicz, J. F. Y1 - 2016/04// N1 - Accession Number: 115445844. Language: English. Entry Date: 20160530. Revision Date: 20160530. Publication Type: Article. Journal Subset: Biomedical; Europe; Peer Reviewed; Public Health; UK & Ireland. NLM UID: 0376507. KW - HIV Infections -- Diagnosis -- United States KW - HIV Infections -- Epidemiology -- United States KW - Health Screening -- Methods -- United States KW - United States Air Force KW - Human KW - United States KW - Retrospective Design KW - Enzyme-Linked Immunosorbent Assay KW - Blotting, Western KW - Descriptive Statistics KW - Blacks KW - Confidence Intervals SP - 91 EP - 98 JO - Public Health (Elsevier) JF - Public Health (Elsevier) JA - PUBLIC HEALTH (ELSEVIER) VL - 133 CY - New York, New York PB - Elsevier Science SN - 0033-3506 AD - United States Air Force School of Aerospace Medicine, Public Health and Preventive Medicine Department, Epidemiology Consult Service, Wright-Patterson AFB, OH, USA AD - Oak Ridge Institute for Science and Education, Oak Ridge, TN, USA AD - Infectious Disease Service, San Antonio Military Medical Center, Fort Sam Houston, TX, USA DO - 10.1016/j.puhe.2015.11.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=115445844&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Cargill, Daniel S. AU - Moore, Richard O. T1 - Incorporating Radiation in Noise-Induced Phase Evolution of Optical Solitons. JO - SIAM Journal on Applied Dynamical Systems JF - SIAM Journal on Applied Dynamical Systems Y1 - 2016/04// VL - 15 IS - 2 M3 - Article SP - 1025 EP - 1061 SN - 15360040 AB - This paper extends the application of importance sampling to include the leading order effect of dispersive radiation on the soliton's phase when simulating bit errors in optical communication systems that use optical solitons as bit carriers. A simple one-parameter model for the radiation is used to account for the most significant effect of radiation on phase, a mean shift that scales with noise bandwidth. This improved model is used to inform optimal biasing of paths used for importance-sampled Monte Carlo simulations, with the resulting numerics demonstrating improved targeting of phase values. [ABSTRACT FROM AUTHOR] AB - Copyright of SIAM Journal on Applied Dynamical Systems is the property of Society for Industrial & Applied Mathematics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL solitons KW - MONTE Carlo method KW - OPTICAL communications KW - BANDWIDTHS KW - NOISE KW - RADIATION KW - importance sampling KW - Monte Carlo simulations KW - nonlinear Schrödinger equation KW - optical fibers KW - radiation KW - solitons N1 - Accession Number: 117047779; Cargill, Daniel S. 1; Email Address: daniel.cargill@us.af.mil Moore, Richard O. 2; Email Address: rmoore@njit.edu; Affiliation: 1: Directed Energy Directorate, Air Force Research Laboratory, Kirtland Air Force Base, NM 87117 2: Department of Mathematical Sciences, New Jersey Institute of Technology, Newark, NJ 07102; Source Info: 2016, Vol. 15 Issue 2, p1025; Subject Term: OPTICAL solitons; Subject Term: MONTE Carlo method; Subject Term: OPTICAL communications; Subject Term: BANDWIDTHS; Subject Term: NOISE; Subject Term: RADIATION; Author-Supplied Keyword: importance sampling; Author-Supplied Keyword: Monte Carlo simulations; Author-Supplied Keyword: nonlinear Schrödinger equation; Author-Supplied Keyword: optical fibers; Author-Supplied Keyword: radiation; Author-Supplied Keyword: solitons; Number of Pages: 37p; Document Type: Article L3 - 10.1137/15M1049592 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117047779&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - WILLKE, TARA1 T1 - THREE WRONGS DO NOT MAKE A RIGHT: FEDERAL SOVEREIGN IMMUNITY, THE FERES DOCTRINE, AND THE DENIAL OF CLAIMS BROUGHT BY MILITARY MOTHERS AND THEIR CHILDREN FOR INJURIES SUSTAINED PRE-BIRTH. JO - Wisconsin Law Review JF - Wisconsin Law Review J1 - Wisconsin Law Review PY - 2016/04// Y1 - 2016/04// VL - 2016 IS - 2 CP - 2 M3 - Article SP - 263 EP - 286 SN - 0043650X AB - The article discusses the denial of claims brought by U.S. military mothers and their children for injuries sustained pre-birth. Topics discussed include female service members who suffer injuries during pregnancy or the birthing process being barred from seeking recovery under the Federal Tort Claims Act, cases involving claims brought by female service members regarding the same, and the perfunctory nature of the dismissal of claims. KW - Claims KW - Women military personnel -- Wounds & injuries KW - Women military personnel -- United States KW - Pregnancy complications KW - United States. Federal Tort Claims Act N1 - Accession Number: 115717210; Authors:WILLKE, TARA 1; Affiliations: 1: Assistant Professor at Duquesne University School of Law and a veteran of the United States Air Force; Subject: Women military personnel -- Wounds & injuries; Subject: Claims; Subject: Women military personnel -- United States; Subject: United States. Federal Tort Claims Act; Subject: Pregnancy complications; Number of Pages: 24p; Court Cases: Costo v. United States; 248 F.3d 863, 864 (9th Cir. 2001); Feres v. United States; 340 U.S. 135 (1950); Statute:Federal Tort Claims Act; 28 U.S.C. § 1346 (2012); Jurisdiction:United States; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=115717210&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR AU - Moon Soo Bak AU - Brendan McGann AU - Campbell Carter AU - Hyungrok Do T1 - Determinants of laser-induced breakdown spectra in N2–O2 mixtures. JO - Journal of Physics: D Applied Physics JF - Journal of Physics: D Applied Physics Y1 - 2016/03/31/ VL - 49 IS - 12 M3 - Article SP - 1 EP - 1 SN - 00223727 AB - Potential determinants of the laser-induced breakdown spectra in N2–O2 mixtures are investigated with varying species concentration, laser energy, and exposure time (equal to the detector’s intensifier gate time). A focused laser beam with pulse energy 29 mJ, 38 mJ, or 46 mJ generates the breakdown plasma in a N2 mixture containing O2 from 0% to 21% in mole fraction. Time-resolved measurements of the breakdown emission spectra with 2 or 10 ns exposure are carried out beginning from the arrival of the laser beam at the focal point up to several μs later. These measurements show the temporal evolution of the instantaneous spectrum in the range 550–825 nm that contains multiple N and O atomic/ionic emission lines. Analyses of the baseline-subtracted spectra, normalized by the peak intensity of the N atomic emission line at 747 nm, indicate that the temporal evolution of each emission line is independent of species concentration and laser energy, though the instantaneous emission line intensity is strongly dependent on the species concentration and exposure time. The plasma temperature, estimated using two atomic oxygen lines and assuming local thermal equilibrium, and its temporal evolution are shown to be independent of the species concentration and a weak function of the laser energy at a given gas density, e.g. atmospheric pressure and room temperature. In addition, thermal equilibrium calculations, for predicting atomic and ionic species concentrations in the plasma, are carried out, and the combined results dictate that the emission-line intensity is linear with the atomic/ionic species concentration because of the consistent plasma temperature and its temporal evolution, independent of species concentration. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: D Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER-induced breakdown spectroscopy KW - NITROGEN dioxide KW - LASER beams KW - ATOMIC emission spectroscopy KW - PLASMA temperature KW - THERMODYNAMIC equilibrium N1 - Accession Number: 113264036; Moon Soo Bak 1 Brendan McGann 2 Campbell Carter 3 Hyungrok Do 4; Email Address: hyungrok@snu.ac.kr; Affiliation: 1: School of Mechanical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, Korea 2: Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, IN 46556, USA 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA 4: Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul, Korea; Source Info: 3/31/2016, Vol. 49 Issue 12, p1; Subject Term: LASER-induced breakdown spectroscopy; Subject Term: NITROGEN dioxide; Subject Term: LASER beams; Subject Term: ATOMIC emission spectroscopy; Subject Term: PLASMA temperature; Subject Term: THERMODYNAMIC equilibrium; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0022-3727/49/12/125202 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113264036&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McCarthy, Michael C. AU - Martinez, Jr., Oscar AU - McGuire, Brett A. AU - Crabtree, Kyle N. AU - Martin-Drumel, Marie-Aline AU - Stanton, John F. T1 - Isotopic studies of trans- and cis-HOCO using rotational spectroscopy: Formation, chemical bonding, and molecular structures. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2016/03/28/ VL - 144 IS - 12 M3 - Article SP - 124304-1 EP - 124304-11 SN - 00219606 AB - HOCO is an important intermediate in combustion and atmospheric processes because the OH + CO → H + CO2 reaction represents the final step for the production of CO2 in hydrocarbon oxidation, and theoretical studies predict that this reaction proceeds via various intermediates, the most important being this radical. Isotopic investigations of trans- and cis-HOCO have been undertaken using Fourier transform microwave spectroscopy and millimeter-wave double resonance techniques in combination with a supersonic molecular beam discharge source to better understand the formation, chemical bonding, and molecular structures of this radical pair. We find that trans- HOCO can be produced almost equally well from either OH + CO or H + CO2 in our discharge source, but cis-HOCO appears to be roughly two times more abundant when starting from H + CO2. Using isotopically labelled precursors, the OH + C18O reaction predominately yields HOC18O for both isomers, but H18OCO is observed as well, typically at the level of 10%-20% that of HOC18O; the opposite propensity is found for the 18OH + CO reaction. DO + C18O yields similar ratios between DOC18O and D18OCO as those found for OH + C18O, suggesting that some fraction of HOCO (or DOCO) may be formed from the back-reaction H + CO2, which, at the high pressure of our gas expansion, can readily occur. The large 13C Fermi-contact term (aF) for trans- and cis-HO13CO implicates significant unpaired electronic density in a σ-type orbital at the carbon atom, in good agreement with theoretical predictions. By correcting the experimental rotational constants for zero-point vibration motion calculated theoretically using second-order vibrational perturbation theory, precise geometrical structures have been derived for both isomers. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBOXYL group KW - SPECTRUM analysis KW - MOLECULAR structure KW - CHEMICAL bonds KW - FOURIER transform spectroscopy N1 - Accession Number: 114171501; McCarthy, Michael C. 1,2; Email Address: mccarthy@cfa.harvard.edu Martinez, Jr., Oscar 1,2,3 McGuire, Brett A. 1,2,4,5 Crabtree, Kyle N. 1,2,6 Martin-Drumel, Marie-Aline 1,2 Stanton, John F. 7; Affiliation: 1: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA 2: School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, Massachusetts 02138, USA 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117, USA 4: National Radio Astronomy Observatory, Charlottesville, Virginia 22901, USA 5: Jansky Fellow of the National Radio Astronomy Observatory 6: Department of Chemistry, University of California, Davis, Davis, CA, USA 7: Department of Chemistry and Biochemistry, The University of Texas at Austin, 1 University Station A5300, Austin, Texas 78712-0165, USA; Source Info: 2016, Vol. 144 Issue 12, p124304-1; Subject Term: CARBOXYL group; Subject Term: SPECTRUM analysis; Subject Term: MOLECULAR structure; Subject Term: CHEMICAL bonds; Subject Term: FOURIER transform spectroscopy; Number of Pages: 11p; Illustrations: 2 Diagrams, 5 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.4944070 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114171501&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Duan, Xiaofeng F. AU - Burggraf, Larry W. T1 - The closo-Si12C12 molecule from cluster to crystal: A theoretical prediction. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2016/03/21/ VL - 144 IS - 11 M3 - Article SP - 114309-1 EP - 114309-11 SN - 00219606 AB - The structure of closo-Si12C12 is unique among stable SinCm isomers (n, m > 4) because of its high symmetry, π-π stacking of C6 rings and unsaturated silicon atoms at symmetrical peripheral positions. Dimerization potential surfaces reveal various dimerization reactions that form between two closo-Si12C12 molecules through Si-Si bonds at unsaturated Si atoms. As a result the closo-Si12C12 molecule is capable of polymerization to form stable 1D polymer chains, 2D crystal layers, and 3D crystals. 2D crystal structures formed by side-side polymerization satisfy eight Si valences on each monomer without large distortion of the monomer structure. 3D crystals are formed by stacking 2D structures in the Z direction, preserving registry of C6 rings in monomer moiety. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ISOMERS KW - RESEARCH KW - SYMMETRY KW - ORGANOSILICON compounds KW - CHAIN scission KW - CRYSTALS N1 - Accession Number: 113932359; Duan, Xiaofeng F. 1,2; Email Address: xiaofeng.duan@wpafb.af.mil Burggraf, Larry W. 2; Email Address: larry.burggraf@us.af.mil; Affiliation: 1: Air Force Research Laboratory DoD Supercomputer Resource Center, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: 2016, Vol. 144 Issue 11, p114309-1; Subject Term: ISOMERS; Subject Term: RESEARCH; Subject Term: SYMMETRY; Subject Term: ORGANOSILICON compounds; Subject Term: CHAIN scission; Subject Term: CRYSTALS; Number of Pages: 11p; Illustrations: 6 Diagrams, 5 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.4943957 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113932359&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Paranjape, Kiran AU - Leite, Gustavo B. AU - Hallenbeck, Patrick C. T1 - Strain variation in microalgal lipid production during mixotrophic growth with glycerol. JO - Bioresource Technology JF - Bioresource Technology Y1 - 2016/03/15/ VL - 204 M3 - Article SP - 80 EP - 88 SN - 09608524 AB - Algal cultivation at high latitudes is challenged by the relatively low annual solar flux. One possible scenario to overcome this limitation is the use of mixotrophic growth to potentially boost biomass and lipid production. Here the effect of glycerol addition on the growth and lipid production by twelve indigenous microalgae was examined. The results show that there is considerable strain dependent variation in the maximum growth rate under mixotrophic conditions with the addition of glycerol causing in some cases up to a 2.4-fold increase in growth rate and a up to a 1.9-fold increase in biomass. In addition, glycerol increased total lipid production 40–60% in some strains. These results also show the value in screening culture collections for desired traits independent of strain identification since here one (PCH02) of the five Chlorella strains showed a large increase in lipid with glycerol. [ABSTRACT FROM AUTHOR] AB - Copyright of Bioresource Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Microalgae KW - Biomass KW - Biomass energy KW - Natural resources KW - Glycerin KW - Chlorella KW - Biofuels KW - Lipid production KW - Mixotrophic growth N1 - Accession Number: 112551898; Paranjape, Kiran 1; Leite, Gustavo B. 1; Hallenbeck, Patrick C. 1,2; Email Address: patrick.hallenbeck@umontreal.ca; Affiliations: 1: Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, CP6128 Succursale Centre-ville, Montréal, Québec H3C 3J7, Canada; 2: Life Sciences Research Center, Department of Biology, United States Air Force Academy, 2355 Faculty Drive, USAF Academy, CO 80840, United States; Issue Info: Mar2016, Vol. 204, p80; Thesaurus Term: Microalgae; Thesaurus Term: Biomass; Thesaurus Term: Biomass energy; Thesaurus Term: Natural resources; Subject Term: Glycerin; Subject Term: Chlorella; Author-Supplied Keyword: Biofuels; Author-Supplied Keyword: Lipid production; Author-Supplied Keyword: Mixotrophic growth; NAICS/Industry Codes: 221119 Other electric power generation; NAICS/Industry Codes: 221117 Biomass Electric Power Generation; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325611 Soap and Other Detergent Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.biortech.2015.12.071 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=112551898&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Altfeder, Igor AU - Hyungwoo Lee AU - Jianjun Hu AU - Naguy, Rachel D. AU - Sehirlioglu, Alp AU - Reed, Amber N. AU - Voevodin, Andrey A. AU - Chang-Beom Eom T1 - Scanning tunneling microscopy of an interfacial two-dimensional electron gas in oxide heterostructures. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2016/03/15/ VL - 93 IS - 11 M3 - Article SP - 1 EP - 1 SN - 10980121 AB - Using an advanced technique combining pulsed laser deposition growth of LaAlO3, LaTiO3, and SrTiO3 we effectively constructed half-integer unit cell number LaAlO3-SrTiO3 heterostructures where all interfaces are of LaO-TiO2 type, and where a two-dimensional electron gas (2DEG) forms a symmetric n-type bilayer. Using ultrahigh-vacuum scanning tunneling microscopy we investigated the properties of the surface 2DEG in these heterostructures. Our results indicate that the surface 2DEG is strongly, within one unit cell, confined at the interface. Tunneling spectroscopy of the surface 2DEG reveals thickness-dependent band-gap changes attributed to the quantum size effect. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS periodicals KW - SCANNING tunneling microscopy KW - TWO-dimensional electron gas KW - HETEROSTRUCTURES KW - ALTFEDER, Igor KW - LEE, Hyungwoo KW - HU, Jianjun KW - NAGUY, Rachel D. KW - SEHIRLIOGLU, Alp KW - REED, Amber N. KW - VOEVODIN, Andrey A. KW - CHANG-Beom Eom N1 - Accession Number: 117488580; Altfeder, Igor 1; Email Address: Igor.Altfeder.Ctr@us.af.mil Hyungwoo Lee 2 Jianjun Hu 1 Naguy, Rachel D. 1 Sehirlioglu, Alp 3 Reed, Amber N. 1 Voevodin, Andrey A. 1 Chang-Beom Eom 2; Affiliation: 1: Nanoelectronic Materials Branch, Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433, USA 2: Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA 3: Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, USA; Source Info: Mar2016, Vol. 93 Issue 11, p1; Subject Term: PHYSICS periodicals; Subject Term: SCANNING tunneling microscopy; Subject Term: TWO-dimensional electron gas; Subject Term: HETEROSTRUCTURES; People: ALTFEDER, Igor; People: LEE, Hyungwoo; People: HU, Jianjun; People: NAGUY, Rachel D.; People: SEHIRLIOGLU, Alp; People: REED, Amber N.; People: VOEVODIN, Andrey A.; People: CHANG-Beom Eom; Number of Pages: 1p; Document Type: Article L3 - 10.1103/PhysRevB.93.115437 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117488580&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Justin Che AU - Kyoungweon Park AU - Christopher A. Grabowski AU - Jawaid, Ali AU - Kelley, John AU - Koerner, Hilmar AU - Vaia, Richard A. T1 - Preparation of Ordered Monolayers of Polymer Grafted Nanoparticles: Impact of Architecture, Concentration, and Substrate Surface Energy. JO - Macromolecules JF - Macromolecules Y1 - 2016/03/08/ VL - 49 IS - 5 M3 - Article SP - 1834 EP - 1847 SN - 00249297 AB - Rapid fabrication of large area, ordered assemblies of polymer grafted (hairy) nanoparticles (PGNs) will enable additive manufacturing of novel membrane, electronic, and photonic elements. Herein, we discuss the relationship between select processing conditions, substrate surface energy, and canopy architecture on the hierarchical structure of sub- to monolayer PGN assemblies. Varying concentrations (10, 20, and 70 nM) of polystyrene (PS) grafted (σ - 1 chain/nm2) gold nanoparticles (AuNP, r0 = 9 nm) were flow-coated onto surface-modified silicon wafers (γs - 20 mN/m, hydrophobic to 80 mN/m, hydrophilic). The profile of an isolated gold-polystyrene (PS) PGN depends on substrate-canopy interface energy. At low substrate-PS interface energy (20 mN/m), the PS canopy spreads to maximize contact with the surface, whereas at high substrate-PS interface energy (80 mN/m), the chains minimize contact area resulting in a more compact, thicker PGN corona. This behavior is translated up to monolayer assemblies, where rougher, less-ordered assemblies with smaller AuNP-surface separation form on substrates with low interface energy. These films are also thinner with greater Au volume fraction, indicating that the segment density within the PS canopy depends on substrate surface energy. The impact of these processing parameters on PGN film formation parallels classic colloidal deposition even though the PS concentration is within the Landau-Levich regime for film formation from linear chains. The factors influencing local morphology, however, resemble those that affect polymer thin films. Using this understanding, we demonstrate fabrication within seconds of large area monolayer films with close-packed order. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONOMOLECULAR films KW - SURFACE energy KW - NANOFABRICS KW - NANOSTRUCTURED materials KW - BIOMACROMOLECULES N1 - Accession Number: 114337499; Justin Che 1,2 Kyoungweon Park 1 Christopher A. Grabowski 1 Jawaid, Ali 1 Kelley, John 1 Koerner, Hilmar 1 Vaia, Richard A. 1; Email Address: richard.vaia@us.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, United States 2: UES, Inc., Dayton, Ohio 45432, United States; Source Info: Mar2016, Vol. 49 Issue 5, p1834; Subject Term: MONOMOLECULAR films; Subject Term: SURFACE energy; Subject Term: NANOFABRICS; Subject Term: NANOSTRUCTURED materials; Subject Term: BIOMACROMOLECULES; Number of Pages: 14p; Document Type: Article L3 - 10.1021/acs.macromol.5b02722 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114337499&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jing Lu AU - Luna, Esperanza AU - Toshihiro Aoki AU - Steenbergen, Elizabeth H. AU - Yong-Hang Zhang AU - Smith, David J. T1 - Evaluation of antimony segregation in InAs/InAs1–xSbx type-II superlattices grown by molecular beam epitaxy. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2016/03/07/ VL - 119 IS - 9 M3 - Article SP - 095702-1 EP - 095702-7 PB - American Institute of Physics SN - 00218979 AB - InAs/InAs1–xSbx type II superlattices designed for mid-wavelength infrared photo-detection have been studied using several electron microscopy methods, with specific attention directed towards interface chemical diffusion caused by Sb segregation. Reciprocal-space image analysis using the geometric phase method showed asymmetric interfacial strain profiles at the InAs-on-InAsSb interface. Measurement of local Sb compositional profiles across the superlattices using electron energy-loss spectroscopy and 002 dark-field imaging confirmed asymmetric Sb distribution, with the InAs-on-InAsSb interface being chemically graded. In contrast, the InAsSb-on-InAs interface showed a small intrinsic interface width. Careful evaluation of the experimental Sb composition profiles using a combined segregation and sigmoidal model reached quantitative agreement. Segregation dominated over the sigmoidal growth at the InAs-on-InAsSb interface, and the segregation probability of 0.81±0.01 obtained from the two microscopy techniques agreed well within experimental error. Thus, 81% of Sb atoms from the topmost layers segregated into the next layer during growth causing the interfaces to be broadened over a length of ~3 nm. This strong Sb segregation occurred throughout the whole superlattice stack, and would likely induce undesirable effects on band-gap engineering, such as blue-shift or broadening of the optical response, as well as weakened absorption. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTIMONY KW - INDIUM arsenide KW - SUPERLATTICES KW - MOLECULAR beam epitaxy KW - ELECTRON microscopy N1 - Accession Number: 113620207; Jing Lu 1,2; Email Address: jinglu2@asu.edu Luna, Esperanza 3 Toshihiro Aoki 4 Steenbergen, Elizabeth H. 1,5,6 Yong-Hang Zhang 1,5 Smith, David J. 1,7; Affiliation: 1: Center for Photonic Innovation, Arizona State University, Tempe, Arizona 85287, USA 2: School of Engineering for Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, USA 3: Paul Drude Institute for Solid State Electronics, D-10117 Berlin, Germany 4: LeRoy Eyring Center for Solid State Science, Arizona State University, Tempe, Arizona 85287, USA 5: School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA 6: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117-5776, USA 7: Department of Physics, Arizona State University, Tempe, Arizona 85287, USA; Source Info: 3/7/2016, Vol. 119 Issue 9, p095702-1; Subject Term: ANTIMONY; Subject Term: INDIUM arsenide; Subject Term: SUPERLATTICES; Subject Term: MOLECULAR beam epitaxy; Subject Term: ELECTRON microscopy; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 7p; Illustrations: 2 Diagrams, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.4942844 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113620207&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dreiling, J. M. AU - Lewis, F. W. AU - Mills, J. D. AU - Gay, T. J. T1 - Anomalously Large Chiral Sensitivity in the Dissociative Electron Attachment of 10-Iodocamphor. JO - Physical Review Letters JF - Physical Review Letters Y1 - 2016/03/04/ VL - 116 IS - 9 M3 - Article SP - 1 EP - 1 SN - 00319007 AB - We have studied dissociative electron attachment (DEA) between low energy (≤0.6 eV) longitudinally polarized electrons and gas-phase chiral targets of 3-bromocamphor (C10H15BrO), 3-iodocamphor (C10H15IO), and 10-iodocamphor. The DEA rate depends on the sign of the incident electron helicity for a given target handedness, and it varies with both the atomic number (Z) and location of the heaviest atom in the molecule. While simple dynamic mechanisms can account for the asymmetry dependence on Z, they fail to explain the large asymmetry variation with the heavy atom location. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review Letters is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CAMPHOR KW - ELECTRONS KW - CHIRALITY KW - DREILING, J. M. KW - LEWIS, F. W. KW - MILLS, J. D. KW - GAY, T. J. KW - PHYSICAL Review Letters (Periodical) N1 - Accession Number: 116938619; Dreiling, J. M. 1,2; Email Address: jmdreiling2@gmail.com Lewis, F. W. 3 Mills, J. D. 4 Gay, T. J. 1; Affiliation: 1: Jorgensen Hall, University of Nebraska, Lincoln, Nebraska 68588-0299, USA 2: National Institute of Standards and Technology (NIST), 100 Bureau Drive, Gaithersburg, Maryland 20899, USA 3: Department of Applied Sciences, Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, NE1 8ST, United Kingdom 4: Air Force Research Laboratory, Aerospace Systems Directorate, Propellants Branch, AFRL/RQRP, Edwards AFB, California 93524, USA; Source Info: Mar2016, Vol. 116 Issue 9, p1; Subject Term: CAMPHOR; Subject Term: ELECTRONS; Subject Term: CHIRALITY; Reviews & Products: PHYSICAL Review Letters (Periodical); NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; People: DREILING, J. M.; People: LEWIS, F. W.; People: MILLS, J. D.; People: GAY, T. J.; Number of Pages: 1p; Document Type: Article L3 - 10.1103/PhysRevLett.116.093201 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116938619&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, Jennifer A. AU - Chushak, Yaroslav AU - Chávez, Jorge L. AU - Hagen, Joshua A. AU - Kelley-Loughnane, Nancy T1 - Microarrays as Model Biosensor Platforms to Investigate the Structure and Affinity of Aptamers. JO - Journal of Nucleic Acids JF - Journal of Nucleic Acids Y1 - 2016/03/03/ M3 - Article SP - 1 EP - 11 SN - 20900201 AB - Immobilization of nucleic acid aptamer recognition elements selected free in solution onto the surface of biosensor platforms has proven challenging. This study investigated the binding of multiple aptamer/target pairs immobilized on a commercially available microarray as a model system mimicking biosensor applications. The results indicate a minimum distance (linker length) from the surface and thymine nucleobase linker provides reproducible binding across varying conditions. An indirect labeling method, where the target was labeled with a biotin followed by a brief Cy3-streptavidin incubation, provided a higher signal-to-noise ratio and over two orders of magnitude improvement in limit of detection, compared to direct Cy3-protein labeling. We also showed that the affinities of the aptamer/target interaction can change between direct and indirect labeling and conditions to optimize for the highest fluorescence intensity will increase the sensitivity of the assay but will not change the overall affinity. Additionally, some sequences which did not initially bind demonstrated binding when conditions were optimized. These results, in combination with studies demonstrating enhanced binding in nonselection buffers, provided insights into the structure and affinity of aptamers critical for biosensor applications and allowed for generalizations in starting conditions for researchers wishing to investigate aptamers on a microarray surface. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nucleic Acids is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - APTAMERS KW - PROTEIN microarrays KW - ENCAPSULATION (Catalysis) KW - SIGNAL-to-noise ratio KW - BIOSENSORS KW - STREPTAVIDIN N1 - Accession Number: 113479655; Martin, Jennifer A. 1,2 Chushak, Yaroslav 1,3 Chávez, Jorge L. 1,2 Hagen, Joshua A. 1 Kelley-Loughnane, Nancy 1; Affiliation: 1: Human Effectiveness Directorate, 711 Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 2: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 3: The Henry M. Jackson Foundation for the Advancement of Military Medicine, 6720A Rockledge Drive, Bethesda, MD 20817, USA; Source Info: 3/3/2016, p1; Subject Term: APTAMERS; Subject Term: PROTEIN microarrays; Subject Term: ENCAPSULATION (Catalysis); Subject Term: SIGNAL-to-noise ratio; Subject Term: BIOSENSORS; Subject Term: STREPTAVIDIN; Number of Pages: 11p; Document Type: Article L3 - 10.1155/2016/9718612 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113479655&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morgan, Philip E. AU - Visbal, Miguel R. T1 - Numerical Investigation of Flow Control for a Flat-Window Cylindrical Turret. JO - AIAA Journal JF - AIAA Journal Y1 - 2016/03// VL - 54 IS - 3 M3 - Article SP - 861 EP - 879 SN - 00011452 AB - This work presents multiple high-fidelity large-eddy simulations of flow over a cylindrical turret with a flat window oriented at two angles, 90 and 100 deg. For the 100 deg case, additional computations were performed to investigate the effectiveness of multiple types of flow control including rows of short pins, tall pins, and steady blowing wall jets inserted upstream of the turret as well as a steady suction slot at the leading edge of the flat window. The large-eddy simulation computations were obtained using a well-validated high-order Navier-Stokes flow solver employing a sixth-order compact spatial discretization in conjunction with an eighth-order low-pass spatial filter. Overall, large-eddy simulation solutions compared favorably to experimental time mean and fluctuating velocity profiles as well as the general flow structure at both angles. Additionally, valuable insight was obtained on how rows of pins, blowing jets, and steady slot suction control flow separation. Slot suction at the upwind aperture lip was determined to be more effective than rows of pins and blowing jets in controlling flow separation, which is critical in reducing aero-optical aberrations. Steady slot suction was capable of eliminating massive separation at a larger look angle of 120 deg. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TURRETS KW - LARGE eddy simulation models KW - WALL jets KW - NAVIER-Stokes equations KW - VELOCITY N1 - Accession Number: 114399319; Morgan, Philip E. 1 Visbal, Miguel R. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512; Source Info: Mar2016, Vol. 54 Issue 3, p861; Subject Term: TURRETS; Subject Term: LARGE eddy simulation models; Subject Term: WALL jets; Subject Term: NAVIER-Stokes equations; Subject Term: VELOCITY; Number of Pages: 19p; Document Type: Article L3 - 10.2514/1.J054282 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114399319&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Limbu, Tej B. AU - Mendoza, Frank AU - Barrionuevo, Danilo AU - Carpena, Jennifer AU - Maruyama, Benji AU - Katiyar, Ram S. AU - Weiner, Brad R. AU - Morell, Gerardo T1 - Study on the optical and electrical properties of tetracyanoethylene doped bilayer graphene stack for transparent conducting electrodes. JO - AIP Advances JF - AIP Advances Y1 - 2016/03// VL - 6 IS - 3 M3 - Article SP - 1 EP - 10 SN - 21583226 AB - We report the optical and electrical properties of chemically-doped bilayer graphene stack by tetracyanoethylene, a strong electron acceptor. The Tetracyanoethylene doping on the bilayer graphene via charge transfer was confirmed by Raman spectroscopy and Infrared Fourier transform spectroscopy. Doped graphene shows a significant increase in the sheet carrier concentration of up to 1.520×1013 cm-2 with a concomitant reduction of the sheet resistance down to 414.1 Ω/sq. The high optical transmittance (ca. 84%) in the visible region in combination with the low sheet resistance of the Tetracyanoethylene-doped bilayer graphene stack opens up the possibility of making transparent conducting electrodes for practical applications. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Advances is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPHENE -- Optical properties KW - GRAPHENE -- Electric properties KW - TETRACYANOETHYLENE N1 - Accession Number: 114310002; Limbu, Tej B. 1,2; Email Address: tejnembang@yahoo.com Mendoza, Frank 1 Barrionuevo, Danilo 1,2 Carpena, Jennifer 3,4 Maruyama, Benji 4 Katiyar, Ram S. 1,2 Weiner, Brad R. 1,5 Morell, Gerardo 1,2; Affiliation: 1: Institute for Functional Nanomaterials, University of Puerto Rico, San Juan, Puerto Rico 00931, United States 2: Department of Physics, University of Puerto Rico, Rio Piedras Campus, San Juan, Puerto Rico 00931, United States 3: National Research Council, Washington D.C. 20001, United States 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States 5: Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, San Juan, Puerto Rico 00931, United States; Source Info: 2016, Vol. 6 Issue 3, p1; Subject Term: GRAPHENE -- Optical properties; Subject Term: GRAPHENE -- Electric properties; Subject Term: TETRACYANOETHYLENE; Number of Pages: 10p; Document Type: Article L3 - 10.1063/1.4945345 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114310002&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brown Jr., C. Q. AU - Fournier, Rick T1 - No Longer the Outlier. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2016///Spring2016 VL - 30 IS - 1 M3 - Opinion SP - 4 EP - 15 PB - Superintendent of Documents SN - 1555385X AB - The author discusses the U.S. air component structure as of 2016 which is noted to be inspired from the Vietnam-era theater air control system (TACS) and is made up of air operations center (AOC) and Air Force forces (AFFOR). Topics mentioned include the commander air force forces (COMAFFOR), air force doctrine update in 2014 and the proposed air component framework. KW - AIR defenses -- United States KW - AIR forces KW - AIR warfare KW - UNITED States. Air Force KW - UNITED States. Dept. of Defense N1 - Accession Number: 113399779; Brown Jr., C. Q. 1,2 Fournier, Rick 3; Affiliation: 1: Commander, US Air Forces Central Command 2: Combined Force Air Component Commander 3: chief, Wargaming and Concepts Branch, Directorate of Plans, Programs, and Requirements, Air Combat Command; Source Info: Spring2016, Vol. 30 Issue 1, p4; Subject Term: AIR defenses -- United States; Subject Term: AIR forces; Subject Term: AIR warfare; Company/Entity: UNITED States. Air Force Company/Entity: UNITED States. Dept. of Defense; NAICS/Industry Codes: 928110 National Security; Number of Pages: 12p; Illustrations: 1 Color Photograph, 3 Diagrams; Document Type: Opinion UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113399779&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - GOLDFEIN, COL PETER AU - ANDRé ADAMSON, WING CDR T1 - A Primer for Developing Future Airpower Cooperation. JO - Air & Space Power Journal: Afrique et Francophonie JF - Air & Space Power Journal: Afrique et Francophonie Y1 - 2016///Spring2016 VL - 7 IS - 1 M3 - Article SP - 5 EP - 13 SN - 1931728X AB - The article discusses the importance of a Trilateral Strategic Initiative (TSI) for air operations. Topics include importance of interoperability during the North Atlantic Treaty Organization, deconfliction measures of the First World War and trilateral exercise by the U.S. Air Force's Air Combat Command at the Langley Air Force Base in Virginia in December 2015. It informs about a practice developed by the U.S. Air Force, Royal Air Force, and French Air Force to coordinate air operations. KW - WORLD War, 1914-1918 KW - AIR bases KW - NORTH Atlantic Treaty Organization KW - UNITED States. Air Force KW - FRANCE. Armee de l'air N1 - Accession Number: 114781092; GOLDFEIN, COL PETER 1 ANDRé ADAMSON, WING CDR 2; Affiliation: 1: UNITED STATES AIR FORCE 2: ROYAL AIR FORCE, PHD; Source Info: Spring2016, Vol. 7 Issue 1, p5; Subject Term: WORLD War, 1914-1918; Subject Term: AIR bases; Company/Entity: NORTH Atlantic Treaty Organization Company/Entity: UNITED States. Air Force Company/Entity: FRANCE. Armee de l'air; NAICS/Industry Codes: 911110 Defence services; NAICS/Industry Codes: 928110 National Security; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114781092&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Youngquist, Robert C. AU - Nurge, Mark A. AU - Starr, Stanley O. AU - Leve, Frederick A. AU - Peck, Mason T1 - A slowly rotating hollow sphere in a magnetic field: First steps to de-spin a space object. JO - American Journal of Physics JF - American Journal of Physics Y1 - 2016/03// VL - 84 IS - 3 M3 - Article SP - 181 EP - 191 SN - 00029505 AB - Modeling the interaction of a slowly rotating hollow conducting sphere in a magnetic field provided an understanding of the dynamics of orbiting space objects moving through the Earth's magnetic field. This analysis, performed in the late 1950s and limited to uniform magnetic fields, was innovative and acknowledged the pioneers who first observed rotary magnetism, in particular, the seminal work of Hertz in 1880. Now, there is interest in using a magnetic field produced by one space object to stop the spin of a second object so that docking can occur. In this paper, we consider, yet again, the interaction of a rotating hollow sphere in a magnetic field. We show that the predicted results can be tested experimentally, making this an interesting advanced student project. This analysis also sheds light on a rich set of previously unaddressed behaviors involving eddy currents. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Physics is the property of American Association of Physics Teachers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY current testing KW - GEOMAGNETISM KW - MAXWELL equations KW - EARTH (Planet) KW - SPACE vehicles -- Docking KW - ATMOSPHERIC physics KW - ORBIT N1 - Accession Number: 113223917; Youngquist, Robert C. 1; Email Address: Robert.C.Yougquist@nasa.gov Nurge, Mark A. 1; Email Address: Mark.A.Nurge@nasa.gov Starr, Stanley O. 1; Email Address: Stanley.O.Starr@nasa.gov Leve, Frederick A. 2; Email Address: frederick.leve@us.af.mil Peck, Mason 3; Email Address: mp336@cornell.edu; Affiliation: 1: National Aeronautics and Space Administration, Mail Code: UBR3, Kennedy Space Center, Florida 32899 2: Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117 3: 208 Upson Hall, Sibley School of Mechanical and Aerospace Engineering, Cornell University, 124 Hoy Road, Ithaca, New York 14853; Source Info: Mar2016, Vol. 84 Issue 3, p181; Subject Term: EDDY current testing; Subject Term: GEOMAGNETISM; Subject Term: MAXWELL equations; Subject Term: EARTH (Planet); Subject Term: SPACE vehicles -- Docking; Subject Term: ATMOSPHERIC physics; Subject Term: ORBIT; Number of Pages: 11p; Document Type: Article L3 - 10.1119/1.4936633 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113223917&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patton, Steven T. AU - Frasca, Albert J. AU - Hu, Jianjun AU - Varshney, Vikas AU - Phillips, Benjamin S. AU - Roy, Ajit K. AU - Voevodin, Andrey A. T1 - Multiphysics characterization of multi-walled carbon nanotube thermoplastic polyurethane polymer nanocomposites during compression. JO - Carbon JF - Carbon Y1 - 2016/03// VL - 98 M3 - Article SP - 638 EP - 648 SN - 00086223 AB - Multiphysics properties of polymer nanocomposites (PNCs) are of interest for polymer-based microelectromechanical systems, tactile sensors, and flexible electronics. Coupling of mechanical (e.g., strain, stiffness, mechanical shock, etc.), electrical (e.g., resistance), and thermal (e.g., thermal expansion) effects has received little previous attention and is critical for performance and reliability. Compression experiments needed for sensitive touch sensors at low force and strain are rare with insufficient understanding of multiphysics mechanisms. This study investigates mechanical, electrical, and thermal properties of multi-walled carbon nanotube (MWCNT)/thermoplastic polyurethane PNCs during localized compression experiments. A novel correlation was established between increased electrical conduction through a spanning path(s) and higher stiffness giving insight into the mechanism of load transfer to MWCNTs. The correlation is attributed to MWCNT shell buckling-induced growth in the real area of contact between the metal contact electrodes and the PNC that occurs when a spanning path is compressed and begins to conduct electric current. Modulating electric current and power dissipation in a contact shows PNC thickness modulation, where higher power results in localized PNC elongation. The observed PNC thickness modulation is attributed to thermal expansion of the polymer. [ABSTRACT FROM AUTHOR] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIWALLED carbon nanotubes KW - THERMOPLASTICS KW - POLYURETHANES KW - NANOCOMPOSITE materials KW - MATERIALS -- Compression testing KW - MICROELECTROMECHANICAL systems KW - THERMAL expansion N1 - Accession Number: 111978330; Patton, Steven T. 1; Email Address: steven.patton.2.ctr@us.af.mil Frasca, Albert J. 2 Hu, Jianjun 1 Varshney, Vikas 2 Phillips, Benjamin S. 3 Roy, Ajit K. 3 Voevodin, Andrey A. 3; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469-0168, USA 2: Universal Technology Corporation, 1270 N. Fairfield Rd., Beavercreek, OH 45432, USA 3: Materials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7750, USA; Source Info: Mar2016, Vol. 98, p638; Subject Term: MULTIWALLED carbon nanotubes; Subject Term: THERMOPLASTICS; Subject Term: POLYURETHANES; Subject Term: NANOCOMPOSITE materials; Subject Term: MATERIALS -- Compression testing; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: THERMAL expansion; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.carbon.2015.11.051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111978330&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ma, Lin AU - Lei, Qingchun AU - Wu, Yue AU - Xu, Wenjiang AU - Ombrello, Timothy M. AU - Carter, Campbell D. T1 - From ignition to stable combustion in a cavity flameholder studied via 3D tomographic chemiluminescence at 20 kHz. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2016/03// VL - 165 M3 - Article SP - 1 EP - 10 SN - 00102180 AB - This work reports the study of the ignition processes in a Mach-2 cavity combustor based on three-dimensional (3D) measurements at 20 kHz. The 3D measurements were obtained by a combination of tomographic chemiluminescence and fiber-based endoscopes. Measurements of 3D flame and flow properties were reported under two fueling conditions of the combustor. The properties included 3D volume, surface area, shape factor, and 3D3C (three-dimensional and three-component) velocity of the ignition kernel. These results clearly distinguished the ignition stage from the stable combustion stage of the combustor and enabled the determination of a transition time to quantify both stages. The analysis of the change of the ignition kernel's shape, when combined with the 3D3C velocity measurements, also illustrated flame-flow interactions in the cavity combustor. These results demonstrated the utility of the 3D diagnostics to overcome some of the limitations of established planar diagnostics and to resolve the dynamics of high-speed combustion devices both spatially and temporally. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMILUMINESCENCE KW - AUTOMOBILE ignition KW - THREE-dimensional flow (Fluid dynamics) KW - COMBUSTION chambers KW - ENDOSCOPES KW - COMBUSTION KW - 3D measurements KW - Fiber based endoscopes KW - Supersonic combustion KW - Tomography N1 - Accession Number: 113236736; Ma, Lin 1,2; Email Address: linma@vt.edu Lei, Qingchun 2 Wu, Yue 1 Xu, Wenjiang 1 Ombrello, Timothy M. 3 Carter, Campbell D. 3; Affiliation: 1: Department of Aerospace and Ocean Engineering, Virginia Tech, Blacksburg, VA 24060, USA 2: Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24060, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Mar2016, Vol. 165, p1; Subject Term: CHEMILUMINESCENCE; Subject Term: AUTOMOBILE ignition; Subject Term: THREE-dimensional flow (Fluid dynamics); Subject Term: COMBUSTION chambers; Subject Term: ENDOSCOPES; Subject Term: COMBUSTION; Author-Supplied Keyword: 3D measurements; Author-Supplied Keyword: Fiber based endoscopes; Author-Supplied Keyword: Supersonic combustion; Author-Supplied Keyword: Tomography; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 562210 Waste treatment and disposal; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.combustflame.2015.08.026 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113236736&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grady, Nathan R. AU - Pitz, Robert W. AU - Carter, Campbell D. AU - Hsu, Kuang-Yu T1 - Raman scattering measurements of mixing and finite-rate chemistry in a supersonic reacting flow over a piloted, ramped cavity. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2016/03// VL - 165 M3 - Article SP - 310 EP - 320 SN - 00102180 AB - UV Raman scattering is applied to measure fuel/air mixing and combustion of a Mach-2 air stream flowing over a step-ramp cavity fueled with 70% methane/30% hydrogen. Average and RMS fluctuations of temperature and major species profiles as well as scatter plots of simultaneous temperature and chemical scalars are determined from single-shot Raman scattering measurements along a 6-mm line transverse to the main supersonic flow. In the fuel-rich regions of the pilot cavity, the 248-nm KrF laser induces broadband fluorescence interference that reduces the number of analyzable Raman spectra; nonetheless, on the whole, a significant fraction of the spectra were reducible. In the cavity, hydrogen fuel reacts quickly resulting in a uniform water concentration in the recirculation zone. Methane reacts slowly to carbon monoxide/carbon dioxide in the cavity, leading to non-uniform concentrations of these species. Mean and instantaneous mixture fraction data inside the shear layer were indicative of oxygen transport across the shear layer. Temperature, water, and oxygen fluctuations are fairly constant throughout the combustor due to recirculation/turbulent transport across the shear layer and the slow reaction of methane. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN scattering KW - ULTRASONICS KW - MIXING KW - CHEMICAL reactions KW - AIR flow KW - RAMAN spectra KW - COMBUSTION chambers KW - Cavity KW - Combustion KW - Diffusion KW - Raman KW - Scramjet KW - Supersonic N1 - Accession Number: 113236718; Grady, Nathan R. 1; Email Address: grady.346@osu.edu Pitz, Robert W. 1 Carter, Campbell D. 2 Hsu, Kuang-Yu 3; Affiliation: 1: Mechanical Engineering Department, Vanderbilt University, Nashville, TN 37235, United States 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, United States 3: Innovative Scientific Solutions, Inc., Dayton, OH 45459, United States; Source Info: Mar2016, Vol. 165, p310; Subject Term: RAMAN scattering; Subject Term: ULTRASONICS; Subject Term: MIXING; Subject Term: CHEMICAL reactions; Subject Term: AIR flow; Subject Term: RAMAN spectra; Subject Term: COMBUSTION chambers; Author-Supplied Keyword: Cavity; Author-Supplied Keyword: Combustion; Author-Supplied Keyword: Diffusion; Author-Supplied Keyword: Raman; Author-Supplied Keyword: Scramjet; Author-Supplied Keyword: Supersonic; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 562210 Waste treatment and disposal; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.combustflame.2015.12.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113236718&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, Oleg N. AU - Isheim, Dieter AU - Seidman, David N. AU - Pilchak, Adam L. T1 - Development of a Refractory High Entropy Superalloy. JO - Entropy JF - Entropy Y1 - 2016/03// VL - 18 IS - 3 M3 - Article SP - 1 EP - 13 SN - 10994300 AB - Microstructure, phase composition and mechanical properties of a refractory high entropy superalloy, AlMo0.5NbTa0.5TiZr, are reported in this work. The alloy consists of a nano-scale mixture of two phases produced by the decomposition from a high temperature body-centered cubic (BCC) phase. The first phase is present in the form of cuboidal-shaped nano-precipitates aligned in rows along <100>-type directions, has a disordered BCC crystal structure with the lattice parameter a1 = 326.9 ± 0.5 pm and is rich in Mo, Nb and Ta. The second phase is present in the form of channels between the cuboidal nano-precipitates, has an ordered B2 crystal structure with the lattice parameter a2 = 330.4 ± 0.5 pm and is rich in Al, Ti and Zr. Both phases are coherent and have the same crystallographic orientation within the former grains. The formation of this modulated nano-phase structure is discussed in the framework of nucleation-and-growth and spinodal decomposition mechanisms. The yield strength of this refractory high entropy superalloy is superior to the yield strength of Ni-based superalloys in the temperature range of 20 °C to 1200 °C. [ABSTRACT FROM AUTHOR] AB - Copyright of Entropy is the property of MDPI Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT resistant alloys KW - RESEARCH KW - ENTROPY KW - BODY-centered cubic metals KW - CRYSTAL structure KW - METALS -- Mechanical properties KW - MICROSTRUCTURE KW - mechanical properties KW - microstructure and phase analysis KW - refractory high entropy alloy KW - superalloy N1 - Accession Number: 114036944; Senkov, Oleg N. 1; Email Address: oleg.senkov.ctr@us.af.mil Isheim, Dieter 2; Email Address: isheim@northwestern.edu Seidman, David N. 2; Email Address: d-seidman@northwestern.edu Pilchak, Adam L. 1; Email Address: adam.pilchak.1@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA 2: Department of Materials Science and Engineering and Northwestern University Center for Atom-Probe Tomography, Northwestern University, 2220 Campus Drive, Evanston, IL 60208, USA; Source Info: 2016, Vol. 18 Issue 3, p1; Subject Term: HEAT resistant alloys; Subject Term: RESEARCH; Subject Term: ENTROPY; Subject Term: BODY-centered cubic metals; Subject Term: CRYSTAL structure; Subject Term: METALS -- Mechanical properties; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: mechanical properties; Author-Supplied Keyword: microstructure and phase analysis; Author-Supplied Keyword: refractory high entropy alloy; Author-Supplied Keyword: superalloy; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.3390/e18030102 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114036944&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - BRIDGEMOHAN, WILLIAM R. T1 - Building Language Skills & Cultural Competencies for the Joint Force 2020 and Beyond. JO - FAOA Journal of International Affairs JF - FAOA Journal of International Affairs J1 - FAOA Journal of International Affairs PY - 2016///Spring2016 Y1 - 2016///Spring2016 VL - 19 IS - 1 M3 - Excerpt SP - 43 EP - 46 PB - Foreign Area Officer Association SN - 15518094 AB - An excerpt from the article "Building Language Skills & Cultural Competencies for the Joint Force 2020 and Beyond," by William R. Bridgemohan that will be published in the Foreign Area Officer Association (FAOA). org website is presented focusing on the language skills of deployed personnel. KW - LANGUAGE & international relations KW - MILITARY personnel -- Language KW - CORE competencies N1 - Accession Number: 116865415; Source Information: Spring2016, Vol. 19 Issue 1, p43; Subject Term: LANGUAGE & international relations; Subject Term: MILITARY personnel -- Language; Subject Term: CORE competencies; Subject Term: ; Number of Pages: 4p; ; Document Type: Excerpt; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=116865415&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Jennings, William W. AU - Payne, Brian C. AD - US Air Force Academy AD - US Air Force Academy T1 - Fees Eat Diversification's Lunch JO - Financial Analysts Journal JF - Financial Analysts Journal Y1 - 2016/03//March-April 2016 VL - 72 IS - 2 SP - 31 EP - 40 SN - 0015198X N1 - Accession Number: 1572113; Keywords: Asset Allocation; Diversification; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 201606 N2 - Although diversification is often spoken of as the only free lunch in investing, the authors show that it is not free and that it must be considered in light of its costs. They also show that fees on diversifying asset classes are high relative to their risk-adjusted diversification benefit, with the more exotic asset classes carrying higher price tags. Because there is meaningful cross-sectional variation, fees need to be considered when making strategic asset allocation decisions. KW - Household Saving; Personal Finance D14 KW - Portfolio Choice; Investment Decisions G11 KW - Pension Funds; Non-bank Financial Institutions; Financial Instruments; Institutional Investors G23 L3 - http://www.cfapubs.org/loi/faj UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1572113&site=ehost-live&scope=site UR - http://www.cfapubs.org/loi/faj DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Carney, Carmen AU - Leslie, Clifford AU - Jones, Eric T1 - Oxidation of SiCf/SiC-HfB2 Composites under Laser Heating. JO - International Journal of Applied Ceramic Technology JF - International Journal of Applied Ceramic Technology Y1 - 2016/03//Mar/Apr2016 VL - 13 IS - 2 M3 - Article SP - 295 EP - 301 SN - 1546542X AB - Ceramic matrix composites with Sylramic TM and CG Nicalon TM SiC fibers and SiC-HfB2 matrices derived from a combination of polymer-derived SiC ceramic and HfB2 particulate slurries were prepared. The composites were tested for oxidation resistance by laser heating at 2 MW/m2 to achieve temperatures near 1600°C. The oxidation resistance was compared between uncoated CG Nicalon TM and BN-coated Sylramic TM fiber-based composites. Oxidation resulted in precipitated nano-sized HfO2 independent of the fibers and fiber coatings. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Applied Ceramic Technology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON carbide -- Oxidation KW - HAFNIUM compounds KW - METALLIC composites KW - LASER heating KW - CERAMIC metals KW - METAL nanoparticles N1 - Accession Number: 113466348; Carney, Carmen 1 Leslie, Clifford 1,2 Jones, Eric 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RXCC) Wright-Patterson Air Force Base 2: National Research Council Research Associateship Program; Source Info: Mar/Apr2016, Vol. 13 Issue 2, p295; Subject Term: SILICON carbide -- Oxidation; Subject Term: HAFNIUM compounds; Subject Term: METALLIC composites; Subject Term: LASER heating; Subject Term: CERAMIC metals; Subject Term: METAL nanoparticles; Number of Pages: 7p; Document Type: Article L3 - 10.1111/ijac.12453 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113466348&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harnish, Delbert A. AU - Heimbuch, Brian K. AU - Balzli, Charles AU - Lumley, April E. AU - Choe, Melanie AU - Shaffer, Ronald E. AU - Wander, Joseph D. T1 - Capture of 0.1-μm aerosol particles containing viable H1N1 influenza virus by N95 filtering facepiece respirators. JO - Journal of Occupational & Environmental Hygiene JF - Journal of Occupational & Environmental Hygiene Y1 - 2016/03// VL - 13 IS - 3 M3 - Article SP - D46 EP - D49 SN - 15459624 AB - Nosocomial infections pose an escalating threat to both patients and healthcare workers (HCWs). A widely recommended device for individual respiratory protection, the N95 filtering facepiece respirator (FFR) has been shown to provide efficient filtration of inert particles larger and smaller than the nominal most-penetrating particle size (MPPS) range, 0.03–0.3 μm. Humans generate respiratory aerosols in the MPPS range, suggesting that short-range disease transmission could occur via small infectious particles. Data presented here show that the N95 FFR will afford a significant measure of protection against infectious particles as small as a bare H1N1 influenza virion, and that the capture mechanism does not discriminate in favor of, or against, biological particles. [ABSTRACT FROM PUBLISHER] AB - Copyright of Journal of Occupational & Environmental Hygiene is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Bioaerosol KW - disease transmission KW - H1N1 KW - infection KW - N95 respirator KW - respiratory N1 - Accession Number: 112815192; Harnish, Delbert A. 1; Heimbuch, Brian K. 1; Balzli, Charles 2; Lumley, April E. 2; Choe, Melanie 3; Shaffer, Ronald E. 4; Wander, Joseph D. 5; Affiliations: 1: Applied Research Associates, Panama City, Florida; 2: Universal Technology Corporation, Beavercreek, Ohio; 3: U.S. Department of Health and Human Services, Office of Assistant Secretary for Preparedness and Response, Biomedical Advanced Research and Development Authority, Washington, DC; 4: National Institute for Occupational Safety and Health, Pittsburgh, Pennsylvania; 5: Air Force Research Laboratory, Tyndall Air Force Base, Florida; Issue Info: Mar2016, Vol. 13 Issue 3, pD46; Author-Supplied Keyword: Bioaerosol; Author-Supplied Keyword: disease transmission; Author-Supplied Keyword: H1N1; Author-Supplied Keyword: infection; Author-Supplied Keyword: N95 respirator; Author-Supplied Keyword: respiratory; Number of Pages: 0p; Document Type: Article L3 - 10.1080/15459624.2015.1116698 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=112815192&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 112815192 T1 - Capture of 0.1-μm aerosol particles containing viable H1N1 influenza virus by N95 filtering facepiece respirators. AU - Harnish, Delbert A. AU - Heimbuch, Brian K. AU - Balzli, Charles AU - Lumley, April E. AU - Choe, Melanie AU - Shaffer, Ronald E. AU - Wander, Joseph D. Y1 - 2016/03// N1 - Accession Number: 112815192. Language: English. Entry Date: In Process. Revision Date: 20160910. Publication Type: Article. Journal Subset: Biomedical; Double Blind Peer Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 101189458. SP - D46 EP - D49 JO - Journal of Occupational & Environmental Hygiene JF - Journal of Occupational & Environmental Hygiene JA - J OCCUP ENVIRON HYG VL - 13 IS - 3 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd SN - 1545-9624 AD - Applied Research Associates, Panama City, Florida AD - Universal Technology Corporation, Beavercreek, Ohio AD - U.S. Department of Health and Human Services, Office of Assistant Secretary for Preparedness and Response, Biomedical Advanced Research and Development Authority, Washington, DC AD - National Institute for Occupational Safety and Health, Pittsburgh, Pennsylvania AD - Air Force Research Laboratory, Tyndall Air Force Base, Florida DO - 10.1080/15459624.2015.1116698 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=112815192&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - COMPERE III, ROBERT L. T1 - REVISIONS OF JOHN A. BROADUS'S CLASSIC WORK, A TREATISE ON THE PREPARATION AND DELIVERY OF SERMONS, MISS THE MARK: DEFINITIONS FOR PREACHING AND ELOQUENCE. JO - Journal of the Evangelical Homiletics Society JF - Journal of the Evangelical Homiletics Society Y1 - 2016/03// VL - 16 IS - 1 M3 - Article SP - 47 EP - 54 SN - 15347478 AB - Jesse B. Weatherspoon's and Vernon L. Stanfield's editions of John A. Broadus's work, A Treaty on the Preparation and Delivery of Sermons, do not fully represent Broadus's views of the definition of preaching and eloquence. Two key components of Broadus's definition of preaching are persuasion and biblical exposition; both Weatherspoon and Stanfield inadequately amend Broadus's definition. Furthermore, neither satisfactorily discusses eloquence; in fact, Weatherspoon deleted a significant portion of Broadus's discussion and Stanfield omitted the section entirely. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Evangelical Homiletics Society is the property of Evangelical Homiletics Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PREACHING KW - ELOQUENCE KW - BROADUS, John A. N1 - Accession Number: 114258123; COMPERE III, ROBERT L. 1; Affiliation: 1: Chaplain, United States Air Force, Castle Hills First Baptist Church, San Antonio, TX; Source Info: Mar2016, Vol. 16 Issue 1, p47; Subject Term: PREACHING; Subject Term: ELOQUENCE; People: BROADUS, John A.; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114258123&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Revil-Baudard, Benoit AU - Cazacu, Oana AU - Flater, Philip AU - Chandola, Nitin AU - Alves, J.L. T1 - Unusual plastic deformation and damage features in titanium: Experimental tests and constitutive modeling. JO - Journal of the Mechanics & Physics of Solids JF - Journal of the Mechanics & Physics of Solids Y1 - 2016/03// VL - 88 M3 - Article SP - 100 EP - 122 SN - 00225096 AB - In this paper, we present an experimental study on plastic deformation and damage of polycrystalline pure HCP Ti, as well as modeling of the observed behavior. Mechanical characterization data were conducted, which indicate that the material is orthotropic and displays tension-compression asymmetry. The ex-situ and in-situ X-ray tomography measurements conducted reveal that damage distribution and evolution in this HCP Ti material is markedly different than in a typical FCC material such as copper. Stewart and Cazacu (2011) anisotropic elastic/plastic damage model is used to describe the behavior. All the parameters involved in this model have a clear physical significance, being related to plastic properties, and are determined from very few simple mechanical tests. It is shown that this model predicts correctly the anisotropy in plastic deformation, and its strong influence on damage distribution and damage accumulation. Specifically, for a smooth axisymmetric specimen subject to uniaxial tension, damage initiates at the center of the specimen, and is diffuse; the level of damage close to failure being very low. On the other hand, for a notched specimen subject to the same loading the model predicts that damage initiates at the outer surface of the specimen, and further grows from the outer surface to the center of the specimen, which corroborates with the in-situ tomography data. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Mechanics & Physics of Solids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASTICITY KW - TITANIUM KW - X-rays KW - ORTHOTROPIC plates KW - COMPRESSION loads KW - α-titanium KW - Constitutive modeling KW - Damage KW - In-situ XCMT KW - Plasticity N1 - Accession Number: 112677577; Revil-Baudard, Benoit 1 Cazacu, Oana 1; Email Address: cazacu@reef.ufl.edu Flater, Philip 1,2 Chandola, Nitin 1 Alves, J.L. 3; Affiliation: 1: Department of Mechanical and Aerospace Engineering, University of Florida, REEF, 1350 N. Poquito Rd., Shalimar, FL, USA 2: Air Force Research Laboratory, Eglin, FL, USA 3: MEMS - Microelectromechanical Systems Research Unit, Department of Mechanical Engineering, University of Minho, Portugal; Source Info: Mar2016, Vol. 88, p100; Subject Term: PLASTICITY; Subject Term: TITANIUM; Subject Term: X-rays; Subject Term: ORTHOTROPIC plates; Subject Term: COMPRESSION loads; Author-Supplied Keyword: α-titanium; Author-Supplied Keyword: Constitutive modeling; Author-Supplied Keyword: Damage; Author-Supplied Keyword: In-situ XCMT; Author-Supplied Keyword: Plasticity; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 23p; Document Type: Article L3 - 10.1016/j.jmps.2016.01.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112677577&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ojo, Anthony AU - Ree, Malcolm James AU - Carretta, Thomas R. T1 - Leadership Style and Leader Power. JO - Leadership & Organizational Management Journal JF - Leadership & Organizational Management Journal Y1 - 2016/03// VL - 2016 IS - 1 M3 - Article SP - 101 EP - 114 PB - Franklin Publishing Company SN - 21528675 AB - The relationships between the constructs of transformational and transactional leadership style and leader power were examined in a sample of 181 adults. Leadership style was measured by the Multifactor Leadership Questionnaire (MLQ 5X) and leadership power by the Rahim Leader Power Inventory (RLPI). Confirmatory factor analyses performed separately for the MLQ and RLPI identified single-factor solutions for each instrument. Next, the two measurement models were estimated jointly, revealing a correlation of .57 between the Leadership Style factor and the Power factor. While these results are contrary to the theoretical structure of both scales as presented by their developers, they are consistent with other studies reporting more parsimonious solutions. These results may be the consequence of the well-defined hierarchical structure of the organization in which the sample of participants was collected. [ABSTRACT FROM AUTHOR] AB - Copyright of Leadership & Organizational Management Journal is the property of Franklin Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSACTIONAL leadership KW - POWER (Social sciences) KW - TRANSFORMATIONAL leadership N1 - Accession Number: 119005908; Ojo, Anthony 1; Ree, Malcolm James 2; Email Address: mjree@lake.ollusa.edu; Carretta, Thomas R. 3; Affiliations: 1: Our Lady of the Lake University, San Antonio, Texas; 2: Professorof Leadership Studies, Our Lady of the Lake University, San Antonio, Texas; 3: Air Force Research Laboratory, Wright-Patterson AFB, Ohio; Issue Info: 2016, Vol. 2016 Issue 1, p101; Thesaurus Term: TRANSACTIONAL leadership; Thesaurus Term: POWER (Social sciences); Subject Term: TRANSFORMATIONAL leadership; Number of Pages: 14p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ent&AN=119005908&site=ehost-live&scope=site DP - EBSCOhost DB - ent ER - TY - JOUR AU - Knize, Randall J. AU - Zhdanov, Boris V. AU - Rotondaro, Matthew D. AU - Shaffer, Michael K. T1 - Experimental study of the Cs diode pumped alkali laser operation with different buffer gases. JO - Optical Engineering JF - Optical Engineering Y1 - 2016/03// VL - 55 IS - 3 M3 - Article SP - 1 EP - 5 SN - 00913286 AB - Cs diode pumped alkali laser (DPAL) operation using ethane, methane, and mixtures of these hydrocarbons with the noble gases He and Ar as a buffer gas for spin-orbit relaxation was studied in this work. The best Cs DPAL performance in continuous wave operation with flowing gain medium was achieved using pure methane, pure ethane, or a mixture of ethane (minimum of 200 Torr) and He with a total buffer gas pressure of 300 Torr. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR lasers -- Pumping KW - RESEARCH KW - DIODES KW - CONTINUOUS wave lasers KW - ETHANES KW - HYDROCARBONS KW - NOBLE gases KW - alkali lasers KW - Cs laser KW - diode pumped alkali laser N1 - Accession Number: 114505019; Knize, Randall J. 1 Zhdanov, Boris V. 1; Email Address: boris.zhdanov.ctr@usafa.edu Rotondaro, Matthew D. 1 Shaffer, Michael K. 1; Affiliation: 1: US Air Force Academy, Laser and Optics Research Center, 2354 Fairchild Drive, Street 2A31, USAF Academy, Colorado 80840, United States; Source Info: Mar2016, Vol. 55 Issue 3, p1; Subject Term: SEMICONDUCTOR lasers -- Pumping; Subject Term: RESEARCH; Subject Term: DIODES; Subject Term: CONTINUOUS wave lasers; Subject Term: ETHANES; Subject Term: HYDROCARBONS; Subject Term: NOBLE gases; Author-Supplied Keyword: alkali lasers; Author-Supplied Keyword: Cs laser; Author-Supplied Keyword: diode pumped alkali laser; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1117/1.OE.55.3.036109 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114505019&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Xihua Zou AU - Szep, Attila AU - Chao Wang T1 - Microwave Photonics: Deep Interactions between Microwaves and Lightwaves. JO - Optical Engineering JF - Optical Engineering Y1 - 2016/03// VL - 55 IS - 3 M3 - Article SP - 1 EP - 2 SN - 00913286 AB - An introduction to the journal is presented which discusses articles on topics including physical layer networking for optical-wireless integration, the application of Brillouin scattering gain bandwidth in high-resolution microwave and optical signal processing, and uplink connection for radio-over fiber systems. KW - BRILLOUIN scattering KW - BANDWIDTHS KW - SIGNAL processing N1 - Accession Number: 114504972; Xihua Zou 1,2; Email Address: zouxihua@swjtu.edu.cn Szep, Attila 3; Email Address: szepata@yahoo.com Chao Wang 4; Email Address: C.Wang@kent.ac.uk; Affiliation: 1: Southwest Jiaotong University, School of Information Science and Technology, Chengdu 610031, China 2: University of Duisburg-Essen, Institute of Optoelectronics, Duisburg 47057, Germany 3: Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433, United States 4: University of Kent, School of Engineering and Digital Arts, Canterbury, CT2 7NT, United Kingdom; Source Info: Mar2016, Vol. 55 Issue 3, p1; Subject Term: BRILLOUIN scattering; Subject Term: BANDWIDTHS; Subject Term: SIGNAL processing; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114504972&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 114150023 T1 - Effect of Microfracture on Meniscal Tear Healing in a Goat (Capra hircus) Model. AU - HOWARTH, WILLIAM R. AU - BROCHARD, KEVIN AU - CAMPBELL, SCOT E. AU - GROGAN, BRIAN F. Y1 - 2016/03//Mar/Apr2016 N1 - Accession Number: 114150023. Language: English. Entry Date: 20160803. Revision Date: 20170104. Publication Type: journal article. Journal Subset: Allied Health; Biomedical; Peer Reviewed; USA. Instrumentation: Galveston Orientation and Amnesia Test (GOAT). NLM UID: 7806107. KW - Femoral Fractures -- Surgery KW - Fracture Fixation -- Methods KW - Fracture Healing KW - Knee Injuries -- Surgery KW - Arthroscopy -- Methods KW - Menisci, Tibial -- Injuries KW - Wound Healing KW - Human KW - Mammals KW - Models, Biological KW - Male KW - Animal Studies KW - Validation Studies KW - Comparative Studies KW - Evaluation Research KW - Multicenter Studies KW - Clinical Assessment Tools SP - 105 EP - 110 JO - Orthopedics JF - Orthopedics JA - ORTHOPEDICS VL - 39 IS - 2 CY - Thorofare, New Jersey PB - SLACK Incorporated AB - Meniscal injuries are an extremely common cause of knee pain. Meniscal repairs performed with concomitant anterior cruciate ligament reconstruction appear to heal at a higher rate than meniscal repairs performed in isolation. This may be due in part to the release of marrow elements into the knee and the time of meniscal repair. In cases of isolated meniscal repair, some orthopedic surgeons use microfracture to release marrow elements into the joint as an adjunct to enhance meniscal healing. This study evaluated rates of meniscal tear healing with or without the performance of microfracture in a goat (Capra hircus) model. Forty castrated young adult male goats underwent either a horizontal or a longitudinal 1.0-cm meniscal tear with or without microfracture. All procedures were performed open, in a bloodless field. Meniscal tears were created in the peripheral half of the body of the medial meniscus. The goats were euthanized at 6 months, and meniscal tears were analyzed and classified as complete healing, partial healing, or no healing by direct visualization. A probe was used as an aid to evaluate and classify the meniscal tears. Twenty (87%) of 23 goat meniscal tears showed at least partial healing when performed with concomitant microfracture. Only 5 (29%) of 17 menisci showed any healing in goats that did not receive microfracture. This difference in healing rates was statistically significant (P<.001). Fifteen (65%) meniscal tears accomplished with microfracture were completely healed, whereas only 2 (12%) menisci showed complete healing without microfracture (P<.001). The results of this study suggest that the release of bone marrow elements into the knee by microfracture improves meniscal healing rates. SN - 0147-7447 AD - Department of Orthopedic Surgery, US Air Force Academy, Colorado Springs, Colorado AD - Department of Orthopedic Surgery, New England Baptist Hospital, Boston, Massachusetts AD - Department of Radiology, Landstuhl Regional Medical Center, Landstuhl, Germany AD - Department of Orthopedics and Rehabilitation, Carl R Darnall Army Medical Center, Fort Hood, Texas U2 - PMID: 26811956. DO - 10.3928/01477447-20160119-04 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=114150023&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Wiens, Justin P. AU - Sawyer, Jordan C. AU - Miller, Thomas M. AU - Shuman, Nicholas S. AU - Viggiano, Albert A. AU - Khamesian, Marjan AU - Kokoouline, Viatcheslav AU - Fabrikant, Ilya I. T1 - Electron attachment to the interhalogen compounds ClF, ICl, and IBr. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2016/03// VL - 93 IS - 3 M3 - Article SP - 1 EP - 1 SN - 10502947 AB - Thermal electron attachment rate coefficients for three interhalogen compounds (ClF, ICl, IBr) have been measured from 300 to 900 K at pressures of 1-2 Torr using a flowing afterglow-Langmuir probe apparatus. ClF attaches somewhat inefficiently (k=7.5?10-9 cm³s-1) at 300 K, with the rate coefficient rising to 1.7?10-8 cm³ s-1 at 700 K. At higher temperatures the apparent rate coefficient falls steeply; however, this is interpreted as an artifact due to decomposition on the walls of the inlet line. ICl attaches with even lower efficiency (k=9.5?10-10 cm³ s-1 at 300 K) and a less steep increase with temperature. Attachment to IBr is too slow to confidently measure with the present experiment, with an upper limit on the rate coefficient of 10-10 cm³ s-1 from 300 to 600 K. Both ClF and ICl attach dissociatively to yield Cl-, likely exclusively, though F- or I- may be produced with limits of <2% and <5%, respectively. The ClF attachment was further explored through ab initio calculation of the ClF and ClF- potential energy curves and R-matrix calculations of the resonance parameters which were used then for calculations of the dissociative attachment cross sections and rate coefficients. While the magnitude of the attachment rate coefficient for ClF is similar to those for both Cl2 and F2, the calculated cross sections show qualitatively different threshold behavior due to the s-wave contribution allowed by the lack of inversion symmetry. The v=1 and 2 vibrational modes of ClF attach about three to four times faster than v=0 and 3 at energies lower than ~0.2eV. The calculated rate coefficients are in good agreement with the experiment at 300 K and increase moderately less steeply with temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS periodicals KW - THERMAL electrons KW - RATE coefficients (Chemistry) KW - CHLORINE trifluoride KW - WIENS, Justin P. KW - SAWYER, Jordan C. KW - MILLER, Thomas M. KW - SHUMAN, Nicholas S. KW - VIGGIANO, Albert A. KW - KHAMESIAN, Marjan KW - KOKOOULINE, Viatcheslav KW - FABRIKANT, Ilya I. N1 - Accession Number: 117404443; Wiens, Justin P. 1 Sawyer, Jordan C. 1 Miller, Thomas M. 1 Shuman, Nicholas S. 1 Viggiano, Albert A. 1; Email Address: afrl.rvborgmailbox@kirtland.af.mil Khamesian, Marjan 2 Kokoouline, Viatcheslav 2 Fabrikant, Ilya I. 3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA 2: Department of Physics, University of Central Florida, Orlando, Florida 32816, USA 3: Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA; Source Info: Mar2016, Vol. 93 Issue 3, p1; Subject Term: PHYSICS periodicals; Subject Term: THERMAL electrons; Subject Term: RATE coefficients (Chemistry); Subject Term: CHLORINE trifluoride; People: WIENS, Justin P.; People: SAWYER, Jordan C.; People: MILLER, Thomas M.; People: SHUMAN, Nicholas S.; People: VIGGIANO, Albert A.; People: KHAMESIAN, Marjan; People: KOKOOULINE, Viatcheslav; People: FABRIKANT, Ilya I.; Number of Pages: 1p; Document Type: Article L3 - 10.1103/PhysRevA.93.032706 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117404443&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Basun, S. A. AU - Evans, D. R. T1 - Identification of the specific Fe centers and associated defect structure responsible for enhanced dynamic holography in photorefractive KNbO3:Fe. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2016/03// VL - 93 IS - 9 M3 - Article SP - 1 EP - 1 SN - 10980121 AB - A multifaceted approach is used to identify the Fe centers associated with KNbO3:Fe, determine the location of energy levels, and conclude which centers play a vital role in the photorefractive effect; with such an understanding, the physical parameters may be modified to provide mature materials for dynamic holographic applications. A correlated study is performed on as-grown and reduced KNbO3:Fe crystals, where a uniform reduction is achieved through a modified electroreduction process. This investigation identifies which Fe centers are reduced and which are unaffected, allowing the existence of both charge donors and acceptors as required for photorefraction, resulting in significant improvements of the photorefractive properties. Available charge transitions as a function of photon energy are identified and associated with conditions necessary for major improvements in beam-coupling efficiencies and response times. The understanding of the dynamics and defect structure is supported by photorefractive beam-coupling data. A revised explanation of the photorefractive dynamics is given as this understanding of the defects in KNbO3:Fe is no longer described by the commonly used standard model. This new fundamental understanding that enables the development of improved materials for dynamic holographic applications may also be transferred to other materials classes for disparate applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS periodicals KW - HOLOGRAPHY KW - PHOTOREFRACTIVE effect KW - ENERGY levels (Quantum mechanics) KW - BASUN, S. A. KW - EVANS, D. R. N1 - Accession Number: 117488385; Basun, S. A. 1,2 Evans, D. R. 1; Email Address: dean.evans@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Azimuth Corporation, 4134 Linden Avenue, Suite 300, Dayton, Ohio 45431, USA; Source Info: Mar2016, Vol. 93 Issue 9, p1; Subject Term: PHYSICS periodicals; Subject Term: HOLOGRAPHY; Subject Term: PHOTOREFRACTIVE effect; Subject Term: ENERGY levels (Quantum mechanics); People: BASUN, S. A.; People: EVANS, D. R.; Number of Pages: 1p; Document Type: Article L3 - 10.1103/PhysRevB.93.094102 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117488385&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rumi, Mariacristina AU - Cazzell, Seth A. AU - Kosa, Tamas AU - Sukhomlinova, Ludmila AU - Taheri, Bahman AU - White, Timothy J. AU - Bunning, Timothy J. T1 - Quantification of photoinduced order increase in liquid crystals with naphthopyran guests. JO - Physical Review E JF - Physical Review E Y1 - 2016/03// VL - 93 IS - 3 M3 - Article SP - 1 EP - 1 SN - 24700045 AB - Photoinduced order-increasing phase transitions can occur in dye-liquid crystal mixtures when the photoproduct of the excitation of the dye molecules is more compatible with the liquid crystalline medium than the initial dye species. A detailed investigation of the photoinduced changes of the phase behavior and optical properties of mixtures of liquid crystals with naphthopyran guests upon exposure to light at 365 nm is presented here. In these guest-host systems, the nematic-to-isotropic phase transition temperature is increased upon irradiation. We show that the nematic range can be extended up to 2.9 °C by illumination in 5CB (4−n-pentyl-4′-cyanobiphenyl) liquid crystal mixtures. The order parameter is significantly increased by illumination at all temperatures within the nematic range and the changes are larger at higher concentrations of the guests. In particular, the illuminated guest-host mixtures exhibit order parameters close to those of the neat liquid crystal host at the same temperature relative to the clearing point. An improved understanding of the photophysical processes taking place at the molecular level in these material systems can inform the design of photoresponsive materials and enhance their potential utility in optical or photonic devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS periodicals KW - LIQUID crystals KW - OPTICAL properties KW - PYRAN KW - RUMI, Mariacristina KW - CAZZELL, Seth A. KW - KOSA, Tamas KW - SUKHOMLINOVA, Ludmila KW - TAHERI, Bahman KW - WHITE, Timothy J. KW - BUNNING, Timothy J. N1 - Accession Number: 117526318; Rumi, Mariacristina 1,2 Cazzell, Seth A. 1,2 Kosa, Tamas 3 Sukhomlinova, Ludmila 3 Taheri, Bahman 3 White, Timothy J. 1; Email Address: timothy.white.24@us.af.mil Bunning, Timothy J. 1; Email Address: timothy.bunning@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Azimuth Corporation, 4027 Colonel Glenn Highway, Suite 230, Beavercreek, Ohio 45431, USA 3: Alpha Micron Inc., 1950 State Route 59, Kent, Ohio 44240, USA; Source Info: Mar2016, Vol. 93 Issue 3, p1; Subject Term: PHYSICS periodicals; Subject Term: LIQUID crystals; Subject Term: OPTICAL properties; Subject Term: PYRAN; People: RUMI, Mariacristina; People: CAZZELL, Seth A.; People: KOSA, Tamas; People: SUKHOMLINOVA, Ludmila; People: TAHERI, Bahman; People: WHITE, Timothy J.; People: BUNNING, Timothy J.; Number of Pages: 1p; Document Type: Article L3 - 10.1103/PhysRevE.93.032701 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117526318&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hoff, Brad W. AU - French, David M. AU - Reid, Remington R. AU - Lawrance, Julie E. AU - Lepell, P. David AU - Maestas, Sabrina S. T1 - Apparatus for generating quasi-free-space microwave-driven plasmas. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2016/03// VL - 87 IS - 3 M3 - Article SP - 033507-1 EP - 033507-6 PB - American Institute of Physics SN - 00346748 AB - An apparatus for generating quasi-free-space microwave-driven plasmas has been designed, constructed, and tested. The plasma is driven by a multi-kW, ~5 GHz microwave beam focused at the center of a vacuum chamber using a Koch-type metal plate lens. Sustained plasma discharges have been generated in argon at pressures ranging from 150 to 200 mTorr, at beam power levels ranging from 5 to 10 kW, and at gas flow rates of approximately 200 SCCM. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVES KW - PLASMA flow KW - ARGON KW - FLOW (Fluid dynamics) KW - HASEGAWA-Mima equation N1 - Accession Number: 114199055; Hoff, Brad W. 1 French, David M. 1 Reid, Remington R. 1 Lawrance, Julie E. 1 Lepell, P. David 2 Maestas, Sabrina S. 1; Affiliation: 1: Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico 87117, USA 2: Leidos, 2109 Air Park Road SE, Albuquerque, New Mexico 87106, USA; Source Info: 2016, Vol. 87 Issue 3, p033507-1; Subject Term: MICROWAVES; Subject Term: PLASMA flow; Subject Term: ARGON; Subject Term: FLOW (Fluid dynamics); Subject Term: HASEGAWA-Mima equation; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 6p; Illustrations: 2 Color Photographs, 4 Diagrams, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.4944865 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114199055&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kuhn, Kellie M. AU - Gienger, C. M. AU - Tracy, C. Richard T1 - Small mammals of Pyramid Lake and Anaho Island (Nevada). JO - Southwestern Naturalist JF - Southwestern Naturalist Y1 - 2016/03// VL - 61 IS - 1 M3 - Article SP - 40 EP - 44 SN - 00384909 AB - We report on a survey of the small mammal communities of Anaho Island and the mainland surrounding Pyramid Lake in the Great Basin of western Nevada. Ten rodent species were detected on the mainland, but only the deer mouse ( Peromyscus maniculatus) was detected on Anaho Island. Although the mean abundance of deer mice on the Pyramid Lake mainland was more than double that of Anaho Island (12.5 ± 10.1 individuals per trap grid compared with 5.0 ± 3.4 individuals per trap grid), we did not detect a significant difference between locations. Deer mice on Anaho Island were significantly larger in body size (mean body length = 86 ± 4 mm) than mainland mice (mean = 75 ± 7 mm), but it is unclear what mechanisms might have produced the observed divergence in body size. (English) [ABSTRACT FROM AUTHOR] AB - Reportamos un estudio de las comunidades de los mamíferos pequeños de la Anaho Island y la tierra firme alrededor del Pyramid Lake en la Great Basin de Nevada occidental. Diez especies de roedores fueron detectadas en la tierra firme, pero solamente el ratón venado ( Peromyscus maniculatus) fue detectado en laAnaho Island. Aunque la cantidad media de los ratones venado en la tierra firme alrededor del Pyramid Lake fue más del doble de la cantidad de la Anaho Island (12.5 ± 10.1 individuos por cuadro de trampas en comparación con 5.0 ± 3.4 individuos por cuadro de trampas), no detectamos una diferencia significativa entre los sitios. Los ratones venado en la Anaho Island fueron significativamente más grandes en tamaño corporal (longitud media del cuerpo = 86 ± 4 mm) que los ratones de la tierra firme (media = 75 ± 7 mm), pero no es claro qué mecanismo podría haber producido la diferencia observada en el tamaño corporal. (Spanish) [ABSTRACT FROM AUTHOR] AB - Copyright of Southwestern Naturalist is the property of Southwestern Association of Naturalists and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAMMAL ecology KW - PEROMYSCUS maniculatus KW - BODY size KW - DIVERGENCE (Biology) KW - PYRAMID Lake (Nev.) N1 - Accession Number: 114325691; Kuhn, Kellie M. 1,2 Gienger, C. M. 1,3 Tracy, C. Richard 1; Affiliation: 1: University of Nevada, Reno, Department of Biology and Program in Ecology, Evolution, and Conservation Biology, Reno, NV 89557 2: Present address of KMK: United States Air Force Academy, Department of Biology, 2355 Faculty Drive, Suite 2P389, USAFA, CO 80840 3: Present address of CMG: Austin Peay State University, Department of Biology and Center of Excellence for Field Biology, P.O. Box 4718, Clarksville, TN 37044; Source Info: Mar2016, Vol. 61 Issue 1, p40; Subject Term: MAMMAL ecology; Subject Term: PEROMYSCUS maniculatus; Subject Term: BODY size; Subject Term: DIVERGENCE (Biology); Subject Term: PYRAMID Lake (Nev.); Number of Pages: 5p; Document Type: Article L3 - 10.1894/0038-4909-61.1.40 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114325691&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2016-03240-001 AN - 2016-03240-001 AU - Barron, Laura G. AU - Carretta, Thomas R. AU - Rose, Mark R. T1 - Aptitude and trait predictors of manned and unmanned aircraft pilot job performance. JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2016/03// VL - 28 IS - 2 SP - 65 EP - 77 CY - US PB - Educational Publishing Foundation SN - 0899-5605 SN - 1532-7876 AD - Barron, Laura G., HQ AFPC/DSYX Strategic Research & Assessmen, 550 C Street West, Randolph AFB, TX, US, 78150-4747 N1 - Accession Number: 2016-03240-001. Partial author list: First Author & Affiliation: Barron, Laura G.; Air Force Personnel Center, Randolph Air Force Base, TX, US. Other Publishers: Lawrence Erlbaum; Taylor & Francis. Release Date: 20160121. Correction Date: 20160310. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Ability; Air Force Personnel; Aircraft Pilots; Job Performance; Personality Traits. Classification: Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Air Force Officer Qualifying Test; Air Force Officer Qualifying Test Form S; Self-Description Inventory; Instrument Comprehension Measure. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 13. Issue Publication Date: Mar, 2016. Publication History: First Posted Date: Jan 21, 2016; Accepted Date: Nov 24, 2015; Revised Date: Oct 14, 2015; First Submitted Date: Jul 21, 2015. Copyright Statement: American Psychological Association. 2016. AB - Previous research has shown that the same aptitude and trait measures that predict success in U.S. Air Force (USAF) manned aircraft pilot training predict remotely piloted aircraft (RPA) pilot training outcomes with generally similar levels of validity (Carretta, 2013; Rose, Barron, Carretta, Arnold, & Howse, 2014). However, because USAF RPA pilots initially train in manned aircraft, validation of aptitude and traits predictive of RPA pilot success has thus far been limited to RPA pilot training outcomes that actually require manned flight. Hence, thus far, there has been no basis for determining the aptitudes and traits predictive of success in environments in which pilots actually fly RPAs. To address this gap, the present study evaluated preaccession trait (Big Five personality domains) and aptitude (spatial, quantitative, and aviation knowledge) measures as predictors of manned and unmanned aircraft pilot performance on-the-job, as measured by supervisor and senior rater stratification on 3 years of Officer Performance Reports (OPRs). Results were generally consistent in showing that the same aptitudes, knowledge, and personality traits that predict successful job performance for manned aircraft pilots also predict successful job performance for RPA pilots. However, results also showed preaccession aviation knowledge to be a stronger predictor of job performance for RPA pilots than for manned aircraft pilots. These findings and their implications for attracting and selecting RPA pilots are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - aviator aptitude and personality traits KW - job performance KW - remotely piloted aircraft KW - unmanned aerial systems KW - 2016 KW - Ability KW - Air Force Personnel KW - Aircraft Pilots KW - Job Performance KW - Personality Traits KW - 2016 DO - 10.1037/mil0000109 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-03240-001&site=ehost-live&scope=site UR - laura.barron@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2014-43652-001 AN - 2014-43652-001 AU - Reiley, Peter J. AU - Jacobs, Rick R. T1 - Ethics matter: Moderating leaders’ power use and followers’ citizenship behaviors. JF - Journal of Business Ethics JO - Journal of Business Ethics JA - J Bus Ethics Y1 - 2016/03// VL - 134 IS - 1 SP - 69 EP - 81 CY - Germany PB - Springer SN - 0167-4544 SN - 1573-0697 AD - Reiley, Peter J. N1 - Accession Number: 2014-43652-001. Partial author list: First Author & Affiliation: Reiley, Peter J.; United States Air Force, USAF Academy, DC, US. Release Date: 20141020. Correction Date: 20160714. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Leadership; Organizational Behavior; Business Ethics. Minor Descriptor: Rewards. Classification: Organizational Behavior (3660). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. Page Count: 13. Issue Publication Date: Mar, 2016. Publication History: First Posted Date: Oct 11, 2014; Accepted Date: Oct 2, 2014; First Submitted Date: Nov 15, 2013. Copyright Statement: Springer Science+Business Media Dordrecht. 2014. AB - Followers’ perceptions of their leaders’ ethics have the potential to impact the way they react to the influence of these leaders. The present study of 365 U.S. Air Force Academy Cadets examined how followers’ perceptions of their leaders’ ethics moderated the relationships found between the leaders’ use of power, as conceptualized by French and Raven (Studies in social power, 1959), and the followers’ contextual performance. Our results indicated that leaders’ use of expert, referent, and reward power was associated with higher levels of organizational citizenship behaviors (OCBs) among their followers when the followers perceived these leaders to be more ethical. Moreover, when followers perceived their leaders to be less ethical, these followers reported lower levels of OCBs when their leaders’ utilized referent power. Practical implications, limitations, and future research are also discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Coercive power KW - Ethical leadership KW - Ethics KW - Expert power KW - Follower KW - Leader’s power use KW - Legitimate power KW - Military KW - Organizational citizenship behavior KW - Perception KW - Performance KW - Power bases KW - Referent power KW - Reward power KW - Social influence KW - 2016 KW - Leadership KW - Organizational Behavior KW - Business Ethics KW - Rewards KW - 2016 DO - 10.1007/s10551-014-2416-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-43652-001&site=ehost-live&scope=site UR - rrj@psu.edu UR - peter.reiley@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2016-09270-009 AN - 2016-09270-009 AU - Carretta, Thomas R. AU - Ree, Malcolm James AU - Teachout, Mark S. T1 - Training affects variability in training performance both within and across jobs. JF - International Journal of Selection and Assessment JO - International Journal of Selection and Assessment Y1 - 2016/03// VL - 24 IS - 1 SP - 71 EP - 76 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0965-075X SN - 1468-2389 AD - Carretta, Thomas R. N1 - Accession Number: 2016-09270-009. Partial author list: First Author & Affiliation: Carretta, Thomas R.; Air Force Research Laboratory, Wright‐Patterson AFB, OH, US. Other Publishers: Blackwell Publishing. Release Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Academic Aptitude; Job Performance; Military Personnel; Personnel Training. Minor Descriptor: Cognitive Ability. Classification: Cognitive Processes (2340); Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Armed Services Vocational Aptitude Battery DOI: 10.1037/t11801-000. Methodology: Empirical Study; Quantitative Study. Page Count: 6. Issue Publication Date: Mar, 2016. Copyright Statement: John Wiley & Sons Ltd. 2016. AB - A partial test of a model of training performance variability was conducted. The current study examined variability in cognitive ability and training performance in job‐specific training. Several studies have found mean score differences in cognitive ability across jobs. Further, the variability in training outcomes among individuals within a job has been shown to vary across jobs. Reduced variability in training outcomes is a measure of training effectiveness. For this study data were grouped by job over several years. Participants were 116,310 enlistees enrolled in 108 US Air Force training specialties. Aptitude was measured by a verbal/math composite derived from the US military enlistment test, the Armed Services Vocational Aptitude Battery. Training performance was assessed by written tests of job‐related knowledge content. Predictive validity of the verbal/math composite ranged from .124 to .836 across jobs with a mean weighted value of 0.691. Substantial differences were observed for mean and variability of aptitude across jobs. Trainees in jobs with high aptitude requirements had higher mean aptitude and were less variable on aptitude than those in jobs with lower aptitude requirements. Further, trainees in high aptitude jobs had higher mean training performance scores and were less variable on performance than those in jobs with lower aptitude requirements. Finally, training performance was much less variable than aptitude. Training had the effect of reducing variability among trainees within jobs. This has the effect of producing a more homogenous set of trainees on trained content, which is beneficial to on‐the‐job training. Support was found for a part of the model. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - training performance KW - cognitive ability KW - aptitude KW - US Air Force training specialties KW - enlistees KW - 2016 KW - Academic Aptitude KW - Job Performance KW - Military Personnel KW - Personnel Training KW - Cognitive Ability KW - 2016 DO - 10.1111/ijsa.12131 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-09270-009&site=ehost-live&scope=site UR - thomas.carretta@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2016-14968-033 AN - 2016-14968-033 AU - Ree, Malcolm James AU - Carretta, Thomas R. AU - Teachout, Mark S. T1 - 'Commentary on Ree, Carretta, and Teachout (2015)': Addendum. JF - Industrial and Organizational Psychology: Perspectives on Science and Practice JO - Industrial and Organizational Psychology: Perspectives on Science and Practice JA - Ind Organ Psychol Y1 - 2016/03// VL - 9 IS - 1 SP - 211 EP - 211 CY - United Kingdom PB - Cambridge University Press SN - 1754-9426 SN - 1754-9434 AD - Ree, Malcolm James, School of Business and Leadership, Our Lady of the Lake University, 411 Southwest 24th Street, San Antonio, TX, US, 78207 N1 - Accession Number: 2016-14968-033. Partial author list: First Author & Affiliation: Ree, Malcolm James; Department of Leadership Studies, School of Business and Leadership, Our Lady of the Lake University, San Antonio, TX, US. Other Publishers: Wiley-Blackwell Publishing Ltd. Release Date: 20160602. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Industrial and Organizational Psychology; Measurement; Organizational Behavior; Personality Traits; Psychodynamics. Minor Descriptor: Test Validity; Organizational and Occupational Measures. Classification: Occupational & Employment Testing (2228); Industrial & Organizational Psychology (3600). Population: Human (10). References Available: Y. Page Count: 1. Issue Publication Date: Mar, 2016. Copyright Statement: Society for Industrial and Organizational Psychology. 2016. AB - This addendum article originally appeared in Industrial and Organizational Psychology: Perspectives on Science and Practice, 2015 8 [3], 409-427. The following abstract of the original article appeared in (see record [rid]2016-05263-020[/rid]). In Industrial and Organizational Psychology volume 8, issue 3, a commentary to the focal article Ree et al. was unfortunately omitted. This commentary, 'I've Found It, but What Does It Mean? On the Importance of Theory in Identifying Dominant General Factors,' by Zhenyu Yuan, is reproduced in the following pages. IOP appreciates the opportunity for clarification and regrets the omission. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - general factors KW - dominant general factors KW - 2016 KW - Industrial and Organizational Psychology KW - Measurement KW - Organizational Behavior KW - Personality Traits KW - Psychodynamics KW - Test Validity KW - Organizational and Occupational Measures KW - 2016 DO - 10.1017/iop.2016.2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-14968-033&site=ehost-live&scope=site UR - malcolmree@att.net DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2016-03092-003 AN - 2016-03092-003 AU - Detzi, Daniel AU - Winkleman, Steven T1 - Hitting them where it hurts: A joint interagency network to disrupt terrorist financing in West Africa. JF - Studies in Conflict & Terrorism JO - Studies in Conflict & Terrorism Y1 - 2016/03// VL - 39 IS - 3 SP - 227 EP - 239 CY - United Kingdom PB - Taylor & Francis SN - 1057-610X SN - 1521-0731 AD - Detzi, Daniel, USAF Academy, 2354 Fairchild Drive, Suite 6K-164, Colorado Springs, CO, US, 80840-6258 N1 - Accession Number: 2016-03092-003. Other Journal Title: Terrorism. Partial author list: First Author & Affiliation: Detzi, Daniel; US Air Force Academy, Colorado Springs, CO, US. Release Date: 20170213. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Group Identity; Terrorism; Violence. Minor Descriptor: Funding. Classification: Social Processes & Social Issues (2900). Population: Human (10). Location: Africa. Page Count: 13. Issue Publication Date: Mar, 2016. Publication History: Accepted Date: Sep 15, 2015; First Submitted Date: Jun 16, 2015. Copyright Statement: Taylor and Francis Group, LLC. 2016. AB - Illicit trafficking networks in West Africa are a major funding source for violent extremist groups in the region. Although the United States has formed interagency constructs in the Caribbean and in Europe to counter illicit trafficking, there is a gap in West Africa. The corridor of smuggling routes from the shores of West Africa into North Africa provides extremist groups with the financing they need to continue their activities. By forming a third interagency organization in West Africa, the United States and its partners could strike a significant blow to violent extremist groups, which continue to threaten U.S. interests in the region. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - extremist groups KW - terrorist financing KW - funding source KW - illicit trafficking networks KW - 2016 KW - Group Identity KW - Terrorism KW - Violence KW - Funding KW - 2016 DO - 10.1080/1057610X.2015.1099994 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-03092-003&site=ehost-live&scope=site UR - daniel.detzi@usafa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Konkova, T. AU - Valeev, I. AU - Mironov, S. AU - Korznikov, A. AU - Korznikova, G. AU - Myshlyaev, M.M. AU - Semiatin, S.L. T1 - Microstructure response of cryogenically-rolled Cu–30Zn brass to electric-current pulsing. JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2016/02/25/ VL - 659 M3 - Article SP - 184 EP - 192 SN - 09258388 AB - The effect of transient electric-current pulses (ECP) on the evolution of microstructure and texture of cryogenically-rolled Cu–30Zn brass was determined. The pulsing was shown to lead to recrystallization followed by grain growth. The mean grain size in the recrystallized material was 0.5 μm, thus indicating that cryogenic rolling coupled with ECP is suitable for the production of an ultrafine-grain microstructure in Cu–30Zn brass. The differences in the recrystallization texture in pulsed versus statically-annealed conditions suggested a distinct recrystallization mechanism during ECP. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - CRYOGENICS KW - ROLLING (Metalwork) KW - COPPER-zinc alloys KW - BRASS KW - ELECTRIC currents KW - Cryogenic deformation KW - Cu-30Zn brass KW - Electric-current pulses KW - Electron backscatter diffraction KW - Grain structure KW - Texture N1 - Accession Number: 111486172; Konkova, T. 1,2 Valeev, I. 1 Mironov, S. 1,3; Email Address: smironov@material.tohoku.ac.jp Korznikov, A. 1,4 Korznikova, G. 1 Myshlyaev, M.M. 5,6 Semiatin, S.L. 7; Affiliation: 1: Institute for Metals Superplasticity Problems, Russian Academy of Science, 39 Khalturin Str., Ufa, 450001, Russia 2: Advanced Forming Research Centre, University of Strathclyde, 85 Inchinnan Drive, Inchinnan, PA4 9LJ, United Kingdom 3: Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Sendai 980-8579, Japan 4: National Research Tomsk State University, 36 Lenina Av., Tomsk 634050, Russia 5: Baikov Institute of Metallurgy and Material Science, Russian Academy of Science, 49 Lenin-Av., Moscow 119991, Russia 6: Institute of Solid State Physics, Russian Academy of Sciences, 2 Academic Osypian Str., Chernogolovka, Moscow Oblast 142432, Russia 7: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Feb2016, Vol. 659, p184; Subject Term: MICROSTRUCTURE; Subject Term: CRYOGENICS; Subject Term: ROLLING (Metalwork); Subject Term: COPPER-zinc alloys; Subject Term: BRASS; Subject Term: ELECTRIC currents; Author-Supplied Keyword: Cryogenic deformation; Author-Supplied Keyword: Cu-30Zn brass; Author-Supplied Keyword: Electric-current pulses; Author-Supplied Keyword: Electron backscatter diffraction; Author-Supplied Keyword: Grain structure; Author-Supplied Keyword: Texture; NAICS/Industry Codes: 331410 Nonferrous Metal (except Aluminum) Smelting and Refining; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331491 Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331315 Aluminum Sheet, Plate, and Foil Manufacturing; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331221 Rolled Steel Shape Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jallcom.2015.11.059 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111486172&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hallenbeck, Patrick C. AU - Liu, Yuan T1 - Recent advances in hydrogen production by photosynthetic bacteria. JO - International Journal of Hydrogen Energy JF - International Journal of Hydrogen Energy Y1 - 2016/02/23/ VL - 41 IS - 7 M3 - Article SP - 4446 EP - 4454 SN - 03603199 AB - The photosynthetic bacteria have a very versatile metabolic repertoire and have been known for decades to produce hydrogen during photofermentative growth. Here, recent advances in hydrogen production by these organisms are reviewed and future directions highlighted. Often used as a second stage in two stage hydrogen production processes; first stage fermentative sugar to hydrogen and organic acids; second stage, organic acids to hydrogen, recent studies have highlighted their ability to directly convert sugars to hydrogen. Several studies have attempted to optimize a single stage batch process and these, and a study with continuous cultures have shown that yields approaching 9 mol H 2 /mol glucose can be obtained. One of the drawbacks of this system is the dependency on light, necessitating the use of photobioreactors, thus potentially greatly adding to the cost of such a system. In another approach which avoids the use of light energy, microaerobic fermentation of organic acids to hydrogen, driven by limited oxidative phosphorylation has been demonstrated in principle. Further advances will probably require the use of metabolic engineering and more sophisticated process controls in order to achieve higher stoichiometries, approaches that might be applied to other, light dependent, hydrogen production process by these organisms. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Hydrogen production KW - Photosynthetic bacteria KW - Organic acids KW - Fermentation KW - Photobioreactors KW - Biological hydrogen production KW - Energy from wastes KW - Improving rates and yields KW - Photofermentation N1 - Accession Number: 113281492; Hallenbeck, Patrick C. 1,2; Email Address: patruck.hallenbeck.ctr@usafa.edu; Liu, Yuan 2; Affiliations: 1: Life Sciences Research Center, Department of Biology, United States Air Force Academy, 2355 Faculty Drive, USAF Academy, CO 80840, USA; 2: Department of Microbiology, Infectious Diseases and Immunology, University of Montreal, CP 6128 Succursale Centre-ville, Montreal, Quebec H3C 3J7, Canada; Issue Info: Feb2016, Vol. 41 Issue 7, p4446; Thesaurus Term: Hydrogen production; Thesaurus Term: Photosynthetic bacteria; Thesaurus Term: Organic acids; Thesaurus Term: Fermentation; Subject Term: Photobioreactors; Author-Supplied Keyword: Biological hydrogen production; Author-Supplied Keyword: Energy from wastes; Author-Supplied Keyword: Improving rates and yields; Author-Supplied Keyword: Photofermentation; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijhydene.2015.11.090 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=113281492&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Ullrich, B. AU - Xi, H. AU - Wang, J. S. T1 - Photoluminescence limiting of colloidal PbS quantum dots. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2016/02/22/ VL - 108 IS - 8 M3 - Article SP - 083110-1 EP - 083110-3 PB - American Institute of Physics SN - 00036951 AB - The exposure of colloidal 2 nm PbS quantum dots to growing continuous wave laser excitation at 532 nm increases the photoluminescence intensity with the square root of the optical stimulus. The results herein in conjunction with previous findings [B. Ullrich and H. Xi, Opt. Lett. 38, 4698 (2013)] advocate the square root trend to be the general limiting function for photo-carrier transport and emission of optically excited nano-sized materials. We further show that the excitation of one electron-hole pair per quantum dot defines the saturation threshold for photoluminescence intensity and dynamic band filling. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOLUMINESCENCE KW - QUANTUM dots KW - EXCITATION spectrum KW - SQUARE root KW - NANOPARTICLES N1 - Accession Number: 113422640; Ullrich, B. 1,2; Email Address: bruno.ullrich@yahoo.com Xi, H. 3 Wang, J. S. 4; Affiliation: 1: Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca, Morelos 62210, Mexico 2: Ullrich Photonics LLC, Wayne, Ohio 43466, USA 3: Department of Physics and Astronomy, Bowling Green State University, Bowling Green, Ohio 43403-0209, USA 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, Ohio 45433-7707, USA; Source Info: 2/22/2016, Vol. 108 Issue 8, p083110-1; Subject Term: PHOTOLUMINESCENCE; Subject Term: QUANTUM dots; Subject Term: EXCITATION spectrum; Subject Term: SQUARE root; Subject Term: NANOPARTICLES; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.4942608 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113422640&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brown, Robert B. AU - Firth, Jordan A. T1 - Analysis of trans-Neptunian objects and a proposed theory to explain their origin. JO - Monthly Notices of the Royal Astronomical Society JF - Monthly Notices of the Royal Astronomical Society Y1 - 2016/02/21/ VL - 456 IS - 2 M3 - Article SP - 1587 EP - 1594 SN - 00358711 AB - Current theories cannot explain how trans-Neptunian objects (TNOs) either formed in situ or how ultrawide trans-Neptunian binaries (TNBs) exist if they were formed closer to the Sun and were later dispersed during Neptune's migration. Furthermore, no theory can adequately explain the documented clustering of ω near 0° for TNOs with a > 150 au. Here, we show that not only is ω clustered for the nine long-period TNOs (LPTNOs) with a > 200 au, but Ω is also grouped almost as closely. Neither of these orbital elements is randomly distributed for any collection of TNOs investigated, including those that are not in resonance with Neptune, those with q > 30 au, q > 44 au, and LPTNOs. Every frequency distribution of ω and Ω indicates that many TNOs were recently affected by Neptune. Based on this study, we propose that TNOs were inside Neptune's orbit in the last few Myr. The TNOs then migrated outwards in a relatively short time period. Ultrawide TNBs never came close to Neptune during this migration, allowing these fragile pairs to remain intact. However, many other TNOs were perturbed as they passed Neptune, resulting in the distribution of orbital elements we see today for all TNOs, including those in the Kuiper belt and the LPTNOs. [ABSTRACT FROM AUTHOR] AB - Copyright of Monthly Notices of the Royal Astronomical Society is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANS-Neptunian objects KW - NEPTUNE (Planet) KW - CELESTIAL mechanics KW - ASTEROIDS KW - SUN KW - celestial mechanics KW - Kuiper belt: general KW - minor planets, asteroids: general N1 - Accession Number: 112479351; Brown, Robert B. 1; Email Address: robert.brown@usafa.edu Firth, Jordan A. 1; Affiliation: 1: US Air Force Academy, Department of Astronautics, 2354 Fairchild Dr, Suite 6H-223, USAF Academy, CO 80840, USA; Source Info: 2/21/2016, Vol. 456 Issue 2, p1587; Subject Term: TRANS-Neptunian objects; Subject Term: NEPTUNE (Planet); Subject Term: CELESTIAL mechanics; Subject Term: ASTEROIDS; Subject Term: SUN; Author-Supplied Keyword: celestial mechanics; Author-Supplied Keyword: Kuiper belt: general; Author-Supplied Keyword: minor planets, asteroids: general; Number of Pages: 8p; Document Type: Article L3 - 10.1093/mnras/stv2818 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112479351&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Andéol, Guillaume AU - Simpson, Brian D. AU - Voss, Patrice T1 - Editorial: How, and Why, Does Spatial-Hearing Ability Differ among Listeners? What is the Role of Learning and Multisensory Interactions? JO - Frontiers in Neuroscience JF - Frontiers in Neuroscience Y1 - 2016/02/16/ M3 - Editorial SP - 1 EP - 3 SN - 16624548 AB - The article discusses individual differences in human perception on the topic of Spatial hearing ability differences and explains how binaural cues, interaural differences in level (ILDs), in time (ITDs) and head-related transfer function (HRTF) affect the spatial hearing ability of a person. KW - HEARING KW - INTERAURAL time delay KW - BRAIN function localization KW - cocktail party KW - HRTF KW - individual differences KW - learning KW - multisensory perception KW - sound localization KW - spatial hearing KW - training N1 - Accession Number: 113170139; Andéol, Guillaume 1 Simpson, Brian D. 2 Voss, Patrice 3; Affiliation: 1: Département Action et Cognition en Situation Opérationnelle, Institut de Recherche Biomédicale des Armées, Brétigny sur Orge, France 2: Air Force Research Laboratory, Dayton, OH, USA 3: McGill University, Canada; Source Info: 2/16/2016, p1; Subject Term: HEARING; Subject Term: INTERAURAL time delay; Subject Term: BRAIN function localization; Author-Supplied Keyword: cocktail party; Author-Supplied Keyword: HRTF; Author-Supplied Keyword: individual differences; Author-Supplied Keyword: learning; Author-Supplied Keyword: multisensory perception; Author-Supplied Keyword: sound localization; Author-Supplied Keyword: spatial hearing; Author-Supplied Keyword: training; Number of Pages: 3p; Document Type: Editorial L3 - 10.3389/fnins.2016.00036 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113170139&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Turgut, Z. AU - Lucas, M. S. AU - Michel, E. AU - Semiatin, S. L. AU - Horwath, J. C. T1 - High Temperature Properties of Highly Electrical Resistive (Fe0.81Co0.19)84Ta9B7 Alloy Cast in Air. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2016/02/15/Feb2016 Part 2 VL - 52 IS - 2 M3 - Article SP - 1 EP - 5 SN - 00189464 AB - This paper presents results from in situ X-ray diffraction (XRD), electrical resistivity, and magnetic measurements on an air-cast, amorphous (Fe0.81Co0.19)84Ta9B7 alloy as a function of temperature. The high temperature magnetic measurements revealed that the Curie temperature of the amorphous phase is 327 °C and crystallization begins at 483 °C. The crystallite sizes determined from the Scherrer analysis of XRD data increased from 13.4 nm at 525 °C to 31.3 nm at 600 °C. XRD data also indicated the presence of two minor metastable phases; one in an as-cast state, which decomposes at temperatures above 400 °C and a second one that starts forming at temperatures above 400 °C and decomposes before the temperature reaches 525 °C. Permeability increased with temperature first, showing a peak value at 125 °C and steadily decreased afterward to values comparable with those of dust cores. Coercivity increased significantly above 200 °C and a peak value of 130 Oe was observed at \sim 400~^\circ \textC . In the as-cast state, the material exhibited an electrical resistivity value of 180 $\mu \Omega $ -cm, which was significantly reduced after crystallization. The material also exhibited a small negative temperature coefficient of resistivity. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - X-ray diffraction KW - RESEARCH KW - ELECTRICAL resistivity KW - COERCIVE fields (Electronics) KW - CURIE temperature KW - MAGNETIC measurements KW - Amorphous alloys KW - Amorphous magnetic materials KW - Coercive force KW - Conductivity KW - crystallization KW - electrical resistivity KW - FeCo alloys KW - Metals KW - Resistance KW - soft magnetic materials KW - Temperature measurement N1 - Accession Number: 112441422; Turgut, Z. 1 Lucas, M. S. 2 Michel, E. 1 Semiatin, S. L. 1 Horwath, J. C. 1; Affiliation: 1: , Air Force Research Laboratory, Dayton, OH, USA 2: , GE Aviation, Evendale, OH, USA; Source Info: Feb2016 Part 2, Vol. 52 Issue 2, p1; Subject Term: X-ray diffraction; Subject Term: RESEARCH; Subject Term: ELECTRICAL resistivity; Subject Term: COERCIVE fields (Electronics); Subject Term: CURIE temperature; Subject Term: MAGNETIC measurements; Author-Supplied Keyword: Amorphous alloys; Author-Supplied Keyword: Amorphous magnetic materials; Author-Supplied Keyword: Coercive force; Author-Supplied Keyword: Conductivity; Author-Supplied Keyword: crystallization; Author-Supplied Keyword: electrical resistivity; Author-Supplied Keyword: FeCo alloys; Author-Supplied Keyword: Metals; Author-Supplied Keyword: Resistance; Author-Supplied Keyword: soft magnetic materials; Author-Supplied Keyword: Temperature measurement; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TMAG.2015.2480738 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112441422&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O.N. AU - Miracle, D.B. T1 - A new thermodynamic parameter to predict formation of solid solution or intermetallic phases in high entropy alloys. JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2016/02/15/ VL - 658 M3 - Article SP - 603 EP - 607 SN - 09258388 AB - A simple thermodynamic criterion is proposed to predict the presence or absence of equilibrium intermetallic phases in a high entropy alloy at a given temperature T. The criterion was verified using 45 currently available HEAs, for which equilibrium phases and respective annealing temperature are reported. The present model shows good correlation with experiment and gives an improved ability to predict formation of solid solution and intermetallic phases compared to earlier models. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERMETALLIC compounds KW - SOLID solutions KW - METALS -- Formability KW - THERMODYNAMIC equilibrium KW - EFFECT of temperature on alloys KW - ANNEALING of metals KW - Equilibrium phases KW - High entropy alloy KW - Phase selection N1 - Accession Number: 111892522; Senkov, O.N. 1; Email Address: oleg.senkov.ctr@us.af.mil Miracle, D.B. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directiorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Feb2016, Vol. 658, p603; Subject Term: INTERMETALLIC compounds; Subject Term: SOLID solutions; Subject Term: METALS -- Formability; Subject Term: THERMODYNAMIC equilibrium; Subject Term: EFFECT of temperature on alloys; Subject Term: ANNEALING of metals; Author-Supplied Keyword: Equilibrium phases; Author-Supplied Keyword: High entropy alloy; Author-Supplied Keyword: Phase selection; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jallcom.2015.10.279 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111892522&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Snure, Michael AU - Paduano, Qing AU - Kiefer, Arnold T1 - Effect of surface nitridation on the epitaxial growth of few-layer sp2 BN. JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2016/02/15/ VL - 436 M3 - Article SP - 16 EP - 22 SN - 00220248 AB - Boron Nitride is a promising 2D dielectric material for use in numerous electronic applications. In order to realize this potential, a process for producing atomically thin layers on microelectronics-compatible substrates is desirable. In this paper we describe an approach to epitaxially grow few-layer sp 2 BN directly on an insulating substrate, using metal-organic chemical vapor deposition (MOCVD). We also elucidate the effect of sapphire surface nitridation on the growth characteristics. We compare the effect of nitridation on the growth rate, surface morphology and structure across a wide range of V/III ratios. Depending on the V/III ratio, two different growth modes were identified: at low V/III 3D island growth is dominant and at high V/III the growth transitions to a self-terminating mode. Under self-terminating growth a film thickness of 1.5 nm is typically achieved. Surface nitridation was found to improve nucleation, promoting self-terminating growth, and resulting in atomically smooth films. Reflection high energy electron diffraction (RHEED) patterns reveal the epitaxial relationship between BN and sapphire to be [1–100]‖[11–20] and [0001]‖[0001]. Growth at low V/III ratios without surface nitridation produced films with large hexagonal holes, which could not be completely filled by extending the growth time. Through surface nitridation, these holes were eliminated, producing continuous smooth films. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NITRIDATION KW - BORON nitride KW - METAL organic chemical vapor deposition KW - CRYSTAL growth KW - DIELECTRIC materials KW - SURFACE chemistry KW - A1. Surface structure KW - A3. Metal organic chemical vapor deposition KW - B1. Nitrides KW - B2. Dielectric materials N1 - Accession Number: 112264243; Snure, Michael 1; Email Address: michael.snure.1@us.af.mil Paduano, Qing 1 Kiefer, Arnold 1; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Feb2016, Vol. 436, p16; Subject Term: NITRIDATION; Subject Term: BORON nitride; Subject Term: METAL organic chemical vapor deposition; Subject Term: CRYSTAL growth; Subject Term: DIELECTRIC materials; Subject Term: SURFACE chemistry; Author-Supplied Keyword: A1. Surface structure; Author-Supplied Keyword: A3. Metal organic chemical vapor deposition; Author-Supplied Keyword: B1. Nitrides; Author-Supplied Keyword: B2. Dielectric materials; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jcrysgro.2015.11.030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112264243&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H.J. AU - Mahalingam, K. AU - Szmulowicz, F. AU - Brown, G.J. T1 - Quantitative study of the effect of deposition temperature on antimony incorporation in InAs/InAsSb superlattices. JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2016/02/15/ VL - 436 M3 - Article SP - 134 EP - 137 SN - 00220248 AB - InAs/InAsSb superlattices (SLs) are being actively explored for infrared detector applications owing to their superior carrier lifetimes. However, antimony (Sb) segregation during growth can alter the properties of the grown material. In this study, using X-ray energy dispersive spectrometry, authors quantify the compositional profile of individual layers and establish epitaxial parameters for high-quality InAs/InAsSb SL materials. Epitaxial conditions are determined for a nominal 7.7 nm InAs/3.5 nm InAs 0.7 Sb 0.3 SL structure tailored for an approximately 6 μm response at 150 K. Since the growth of mixed anion alloys is complicated by the potential reaction of As 2 with Sb surfaces, authors varied the deposition temperature ( T g ) in order to control As 2 surface reactions on Sb surfaces. Authors find that Sb incorporation is suppressed by 21%, with the increase of T g from 395 to 440 °C. This incorporation likely stems from Sb surface segregation during InAsSb layer growth that is driven by the As–Sb exchange mechanism, which can lead to significant compositional and dimensional deviations from the intended design. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTIMONY KW - INDIUM arsenide KW - SUPERLATTICES KW - CRYSTAL growth KW - MOLECULAR beam epitaxy KW - ENERGY dispersive X-ray spectroscopy KW - A. Diffusion KW - A3. Molecular beam epitaxy KW - A3. Superlattices KW - B3. Infrared devices N1 - Accession Number: 112264231; Haugan, H.J. 1; Email Address: heather.haugan.ctr@us.af.mil Mahalingam, K. 1 Szmulowicz, F. 1 Brown, G.J. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Feb2016, Vol. 436, p134; Subject Term: ANTIMONY; Subject Term: INDIUM arsenide; Subject Term: SUPERLATTICES; Subject Term: CRYSTAL growth; Subject Term: MOLECULAR beam epitaxy; Subject Term: ENERGY dispersive X-ray spectroscopy; Author-Supplied Keyword: A. Diffusion; Author-Supplied Keyword: A3. Molecular beam epitaxy; Author-Supplied Keyword: A3. Superlattices; Author-Supplied Keyword: B3. Infrared devices; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jcrysgro.2015.10.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112264231&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yan Wang AU - Zexi Lu AU - Roy, Ajit K. AU - Xiulin Ruan T1 - Effect of interlayer on interfacial thermal transport and hot electron cooling in metal-dielectric systems: An electron-phonon coupling perspective. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2016/02/14/ VL - 119 IS - 6 M3 - Article SP - 1 EP - 7 PB - American Institute of Physics SN - 00218979 AB - It was reported that an interlayer with intermediate phonon spectra between two dielectric materials could reduce the phononic interfacial thermal resistance. In this work, we show that an appropriate choice of interlayer materials with relatively strong electron-phonon coupling could significantly enhance interfacial thermal transport across metal-dielectric interfaces. Our Boltzmann transport simulations demonstrate that such enhancement is achieved by the elimination of electron-phonon nonequilibrium near the original metal-dielectric interface. Moreover, we reveal that interlayer can substantially accelerate hot electron cooling in thin films with weak electron-phonon coupling, for example, Cu, Ag, and Au, supported on a dielectric substrate. At the same time, lattice heating in the thin film is largely reduced. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERFACIAL resistance KW - RESEARCH KW - PHONONS KW - LATTICE dynamics KW - DIELECTRIC materials KW - HOT carriers KW - SPECTRA N1 - Accession Number: 112950510; Yan Wang 1 Zexi Lu 1 Roy, Ajit K. 2 Xiulin Ruan 1; Email Address: ruan@purdue.edu; Affiliation: 1: School of Mechanical Engineering and the Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio 45433, USA; Source Info: 2/14/2016, Vol. 119 Issue 6, p1; Subject Term: INTERFACIAL resistance; Subject Term: RESEARCH; Subject Term: PHONONS; Subject Term: LATTICE dynamics; Subject Term: DIELECTRIC materials; Subject Term: HOT carriers; Subject Term: SPECTRA; Number of Pages: 7p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.4941347 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112950510&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Collins, Michael G. AU - Juvina, Ion AU - Gluck, Kevin A. T1 - Cognitive Model of Trust Dynamics Predicts Human Behavior within and between Two Games of Strategic Interaction with Computerized Confederate Agents. JO - Frontiers in Psychology JF - Frontiers in Psychology Y1 - 2016/02/12/ M3 - Article SP - 1 EP - 17 SN - 16641078 AB - When playing games of strategic interaction, such as iterated Prisoner's Dilemma and iterated Chicken Game, people exhibit specific within-game learning (e.g., learning a game's optimal outcome) as well as transfer of learning between games (e.g., a game's optimal outcome occurring at a higher proportion when played after another game). The reciprocal trust players develop during the first game is thought to mediate transfer of learning effects. Recently, a computational cognitive model using a novel trust mechanism has been shown to account for human behavior in both games, including the transfer between games. We present the results of a study in which we evaluate the model's a priori predictions of human learning and transfer in 16 different conditions. The model's predictive validity is compared against five model variants that lacked a trust mechanism. The results suggest that a trust mechanism is necessary to explain human behavior across multiple conditions, even when a human plays against a non-human agent. The addition of a trust mechanism to the other learning mechanisms within the cognitive architecture, such as sequence learning, instance-based learning, and utility learning, leads to better prediction of the empirical data. It is argued that computational cognitive modeling is a useful tool for studying trust development, calibration, and repair. [ABSTRACT FROM AUTHOR] AB - Copyright of Frontiers in Psychology is the property of Frontiers Media S.A. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SECURITY (Psychology) KW - MALE insecurity KW - KNOWLEDGE acquisition (Expert systems) KW - PREDICTIVE validity KW - PREDICTIVE tests KW - a priori model prediction KW - cognitive modeling KW - social dilemma KW - strategic interaction KW - transfer of learning KW - trust KW - trust dynamics N1 - Accession Number: 112969869; Collins, Michael G. 1,2; Email Address: collins.283@wright.edu Juvina, Ion 2 Gluck, Kevin A. 1; Affiliation: 1: Air Force Research Laboratory, Dayton, OH, USA 2: Adaptive Strategic Thinking and Executive Control of Cognition and Affect, Department of Psychology, Wright State University, Dayton, OH, USA; Source Info: 2/12/2016, p1; Subject Term: SECURITY (Psychology); Subject Term: MALE insecurity; Subject Term: KNOWLEDGE acquisition (Expert systems); Subject Term: PREDICTIVE validity; Subject Term: PREDICTIVE tests; Author-Supplied Keyword: a priori model prediction; Author-Supplied Keyword: cognitive modeling; Author-Supplied Keyword: social dilemma; Author-Supplied Keyword: strategic interaction; Author-Supplied Keyword: transfer of learning; Author-Supplied Keyword: trust; Author-Supplied Keyword: trust dynamics; Number of Pages: 17p; Document Type: Article L3 - 10.3389/fpsyg.2016.00049 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112969869&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liu, R. AU - Lu, R. AU - Roberts, C. AU - Gong, S. AU - Allen, J. W. AU - Allen, M. S. AU - Wenner, B. R. AU - Wasserman, D. T1 - Multiplexed infrared photodetection using resonant radio-frequency circuits. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2016/02/08/ VL - 108 IS - 6 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00036951 AB - We demonstrate a room-temperature semiconductor-based photodetector where readout is achieved using a resonant radio-frequency (RF) circuit consisting of a microstrip split-ring resonator coupled to a microstrip busline, fabricated on a semiconductor substrate. The RF resonant circuits are characterized at RF frequencies as function of resonator geometry, as well as for their response to incident IR radiation. The detectors are modeled analytically and using commercial simulation software, with good agreement to our experimental results. Though the detector sensitivity is weak, the detector architecture offers the potential for multiplexing arrays of detectors on a single readout line, in addition to high speed response for either direct coupling of optical signals to RF circuitry, or alternatively, carrier dynamics characterization of semiconductor, or other, material systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTODETECTORS KW - SEMICONDUCTORS KW - RADIO frequency integrated circuits KW - ELECTRIC resonators KW - COMPUTER simulation N1 - Accession Number: 113011549; Liu, R. 1 Lu, R. 1 Roberts, C. 2 Gong, S. 1 Allen, J. W. 3 Allen, M. S. 3 Wenner, B. R. 4 Wasserman, D. 1; Affiliation: 1: Department of Electrical and Computer Engineering, University of Illinois Urbana Champaign, Urbana, Illinois 61801, USA 2: Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854, USA 3: Air Force Research Laboratory, Munitions Directorate, Eglin Air Force Base, Florida 32542, USA 4: Air Force Research Laboratory, Sensors Directorate, Wright Patterson Air Force Base, Ohio 45433, USA; Source Info: 2/8/2016, Vol. 108 Issue 6, p1; Subject Term: PHOTODETECTORS; Subject Term: SEMICONDUCTORS; Subject Term: RADIO frequency integrated circuits; Subject Term: ELECTRIC resonators; Subject Term: COMPUTER simulation; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 5p; Illustrations: 1 Diagram, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.4941431 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113011549&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adebisi, R. A. AU - Sathish, S. AU - Pilchak, A. L. AU - Shade, P. A. T1 - Elastic Constants of α Ti-7Al Measured Using Resonant Ultrasound Spectroscopy. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 6 PB - American Institute of Physics SN - 0094243X AB - The five independent elastic constants of a single-phase (a, HCP crystal structure) titanium alloy, Ti-7Al, have been measured for the first time using resonant ultrasound spectroscopy (RUS). RUS is a nondestructive evaluation method that mea-sures the mechanical resonance of solids and uses the resonance frequencies to extract a complete set of elastic constants of the solid material. The elastic constants of titanium alloys vary substantially depending on manufacturing history and composition. In addition, available data on the elastic constants of titanium alloys is limited. The elastic constants data for Ti-7Al are presented in this paper and the results are compared to the available data for other titanium alloys that are similar in composition. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - ELASTIC constants KW - RESONANT ultrasound spectroscopy KW - DATA analysis KW - COMPARATIVE studies N1 - Accession Number: 113073545; Adebisi, R. A. 1; Email Address: Rasheed.Adebisi@udri.udayton.edu Sathish, S. 1 Pilchak, A. L. 2 Shade, P. A. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH 45433, USA; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: TITANIUM alloys; Subject Term: ELASTIC constants; Subject Term: RESONANT ultrasound spectroscopy; Subject Term: DATA analysis; Subject Term: COMPARATIVE studies; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 6p; Illustrations: 1 Diagram, 3 Charts, 1 Graph; Document Type: Article L3 - 10.1063/1.4940523 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073545&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Shell, Eric B. AU - Oneida, Erin K. AU - Sabbagh, Harold A. AU - Sabbagh, Elias AU - Murphy, R. Kim AU - Mazdiyasni, Siamack AU - Lindgren, Eric A. T1 - Model-based Inverse Methods for Sizing Surface-breaking Discontinuities with Eddy Current Probe Variability. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 10 PB - American Institute of Physics SN - 0094243X AB - The objective of this work is to demonstrate and validate model-based inversion techniques to characterize length, depth, width and orientation of surface-breaking cracks using eddy current NDE under varying probe conditions. A series of parametric studies of probe characteristics are presented for a fixed set of well-characterized flaws with varying length, depth, opening width and orientation angle. Results show inversion performance differences between probes with the same design specifications. Inversion results were also evaluated for a probe that was selectively controlled for varying probe liftoff, varying tilt in two directions, and orientation. Certain levels of probe tilt and liftoff were found to degrade the performance of the inversion technique. By using a model calibration process that incorporates the matching probe calibration data, better inversion results can be achieved, to a limited degree. There is a need to more appropriately adapt the model through the calibration fit to compensate for varying probe tilt and liftoff. Results are presented for a model transform approach, evaluating scale and phase terms based on the best model fit with the calibration data. The results for certain severe cases of liftoff were improved using the transformed model; however, it does not address all probe conditions. Future work is proposed to use a full model-based transformation approach using more comprehensive meta-model representations. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY current testing KW - INVERSION (Geophysics) KW - DISCONTINUOUS functions KW - PERFORMANCE evaluation KW - CALIBRATION N1 - Accession Number: 113073561; Aldrin, John C. 1; Email Address: aldrin@computationaltools.com Shell, Eric B. 2; Email Address: eric.shell@wyle.com Oneida, Erin K. 2; Email Address: erin.oneida@wyle.com Sabbagh, Harold A. 3; Email Address: has@sabbagh.com Sabbagh, Elias 3; Email Address: ehs@sabbagh.com Murphy, R. Kim 3; Email Address: rkmurphy@att.net Mazdiyasni, Siamack 4; Email Address: siamack.mazdiyasni@us.af.mil Lindgren, Eric A. 4; Email Address: eric.lindgren@us.af.mil; Affiliation: 1: Computational Tools, 4275 Chatham Avenue, Gurnee, IL 60031 2: Wyle, 2700 Indian Ripple Road, Dayton, OH 45440 3: Victor Technologies LLC, Bloomington, IN 47401 4: Air Force Research Laboratory (AFRL/RXCA), Wright-Patterson AFB, OH 45433; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: EDDY current testing; Subject Term: INVERSION (Geophysics); Subject Term: DISCONTINUOUS functions; Subject Term: PERFORMANCE evaluation; Subject Term: CALIBRATION; Number of Pages: 10p; Illustrations: 1 Color Photograph, 6 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.4940539 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073561&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Sabbagh, Harold A. AU - Zhao, Liming AU - Sabbagh, Elias AU - Murphy, R. Kim AU - Keiser, Mark AU - Flores-Lamb, Jennifer AU - Forsyth, David S. AU - Motes, Doyle AU - Lindgren, Eric A. AU - Mooers, Ryan T1 - Model-based Inverse Methods for Sizing Cracks ofVarying Shape and Location in Bolt-hole Eddy Current (BHEC) Inspections. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 11 PB - American Institute of Physics SN - 0094243X AB - A comprehensive approach is presented to perform model-based inversion of crack characteristics using bolt hole eddy current (BHEC) techniques. Data was acquired for a wide range of crack sizes and shapes, including mid-bore, corner and through-thickness crack types, and from both standard eddy current hardware and a prototype BHEC system with z-axis position encoding. Signal processing algorithms were developed to process and extract features from the 2D data sets, and inversion algorithms using VIC-3D generated surrogate models were used for inverting crack size. New model results are presented, which now address the effect of having a corner crack at an edge and a through crack adjacent to two edges. A two-step inversion process was implemented that first evaluates the material layer thickness, crack type and location, in order to select the most appropriate VIC-3D surrogate model for subsequent crack sizing inversion step. Inversion results for select mid-bore, through and corner crack specimens are presented where sizing performance was found to be satisfactory in general, but also depend on the size and location of the flaw. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - INVERSION (Geophysics) KW - FRACTURE mechanics KW - INSPECTION & review KW - THICKNESS measurement KW - SIGNAL processing N1 - Accession Number: 113073579; Aldrin, John C. 1; Email Address: aldrin@computationaltools.com Sabbagh, Harold A. 2; Email Address: has@sabbagh.com Zhao, Liming 2; Email Address: zhou@sabbagh.com Sabbagh, Elias 2; Email Address: ehs@sabbagh.com Murphy, R. Kim 2; Email Address: rkmurphv@att.net Keiser, Mark 3; Email Address: mkeiser@tri-austin.com Flores-Lamb, Jennifer 3; Email Address: ifloreslamb@tri-austin.com Forsyth, David S. 3; Email Address: dforsvth@tri-austin.com Motes, Doyle 3; Email Address: dmotes@tri-austin.com Lindgren, Eric A. 4; Email Address: eric.lindgren@us.af.mil Mooers, Ryan 4; Email Address: rvan.mooers.l@us.af.mil; Affiliation: 1: Computational Tools, 4275 Chatham Avenue, Gurnee, IL 60031 2: Victor Technologies LLC, Bloomington, IN 47401 3: TRI/Austin, Austin, TX 78746 4: Air Force Research Laboratory (AFRL/RXCA), Wright-Patterson AFB, OH 45433; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: EDDY currents (Electric); Subject Term: INVERSION (Geophysics); Subject Term: FRACTURE mechanics; Subject Term: INSPECTION & review; Subject Term: THICKNESS measurement; Subject Term: SIGNAL processing; Number of Pages: 11p; Illustrations: 2 Color Photographs, 2 Diagrams, 4 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.4940557 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073579&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Forsyth, David S. AU - Welter, John T. T1 - Design and Demonstration of Automated Data Analysis Algorithms for Ultrasonic Inspection of Complex Composite Panels with Bonds. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 11 PB - American Institute of Physics SN - 0094243X AB - To address the data review burden and improve the reliability of the ultrasonic inspection of large composite structures, automated data analysis (ADA) algorithms have been developed to make calls on indications that satisfy the detection criteria and minimize false calls. The original design followed standard procedures for analyzing signals for time-of-flight indications and backwall amplitude dropout. However, certain complex panels with varying shape, ply drops and the presence of bonds can complicate this interpretation process. In this paper, enhancements to the automated data analysis algorithms are introduced to address these challenges. To estimate the thickness of the part and presence of bonds without prior information, an algorithm tracks potential backwall or bond-line signals, and evaluates a combination of spatial, amplitude, and time-of-flight metrics to identify bonded sections. Once part boundaries, thickness transitions and bonded regions are identified, feature extraction algorithms are applied to multiple sets of through-thickness and backwall C-scan images, for evaluation of both first layer through thickness and layers under bonds. ADA processing results are presented for a variety of complex test specimens with inserted materials and other test discontinuities. Lastly, enhancements to the ADA software interface are presented, which improve the software usability for final data review by the inspectors and support the certification process. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INSPECTION & review KW - ULTRASONICS KW - COMPOSITE plates KW - DATA analysis KW - RELIABILITY (Engineering) N1 - Accession Number: 113073613; Aldrin, John C. 1; Email Address: aldrin@computationaltools.com Forsyth, David S. 2; Email Address: dforsyth@tri-austin.com Welter, John T. 3; Email Address: john.welter.2@us.af.mil; Affiliation: 1: Computational Tools, Gurnee, IL 60031 2: TRI/Austin, Austin, TX 78746 3: Air Force Research Laboratory (AFRL/RXCA), Wright-Patterson AFB, OH 45433; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: INSPECTION & review; Subject Term: ULTRASONICS; Subject Term: COMPOSITE plates; Subject Term: DATA analysis; Subject Term: RELIABILITY (Engineering); Number of Pages: 11p; Illustrations: 2 Color Photographs, 1 Diagram, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.4940591 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073613&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Annis, Charles AU - Sabbagh, Harold A. AU - Lindgren, Eric A. T1 - Best Practices for Evaluating the Capability of Nondestructive Evaluation (NDE) and Structural Health Monitoring (SHM) Techniques for Damage Characterization. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 10 PB - American Institute of Physics SN - 0094243X AB - A comprehensive approach to NDE and SHM characterization error (CE) evaluation is presented that follows the framework of the 'ahat-versus-a' regression analysis for POD assessment. Characterization capability evaluation is typically more complex with respect to current POD evaluations and thus requires engineering and statistical expertise in the model-building process to ensure all key effects and interactions are addressed. Justifying the statistical model choice with underlying assumptions is key. Several sizing case studies are presented with detailed evaluations of the most appropriate statistical model for each data set. The use of a model-assisted approach is introduced to help assess the reliability of NDE and SHM characterization capability under a wide range of part, environmental and damage conditions. Best practices of using models are presented for both an eddy current NDE sizing and vibration-based SHM case studies. The results of these studies highlight the general protocol feasibility, emphasize the importance of evaluating key application characteristics prior to the study, and demonstrate an approach to quantify the role of varying SHM sensor durability and environmental conditions on characterization performance. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - STRUCTURAL health monitoring KW - REGRESSION analysis KW - STATISTICAL models KW - FRACTURE mechanics N1 - Accession Number: 113073668; Aldrin, John C. 1; Email Address: aldrin@computationaltools.com Annis, Charles 2; Email Address: charles.annis@statisticalengineering.com Sabbagh, Harold A. 3; Email Address: has@sabbagh.com Lindgren, Eric A. 4; Email Address: eric.lindgren@us.af.mil; Affiliation: 1: Computational Tools, 4275 Chatham Avenue, Gurnee, IL 60031 2: Statistical Engineering, Palm Beach Garden, FL 33418 3: Victor Technologies LLC, Bloomington, IN 47401 4: Air Force Research Laboratory (AFRL/RXCA), Wright-Patterson AFB, OH 45433; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: NONDESTRUCTIVE testing; Subject Term: STRUCTURAL health monitoring; Subject Term: REGRESSION analysis; Subject Term: STATISTICAL models; Subject Term: FRACTURE mechanics; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 10p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1063/1.4940646 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073668&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Biedermann, Eric AU - Jauriqui, Leanne AU - Aldrin, John C. AU - Mayes, Alexander AU - Williams, Tom AU - Mazdiyasni, Siamack T1 - Uncertainty Quantification in Modeling and Measuring Components with Resonant Ultrasound Spectroscopy. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 10 PB - American Institute of Physics SN - 0094243X AB - Resonant Ultrasound Spectroscopy (RUS) is a nondestructive evaluation (NDE) method which can be used for material characterization, defect detection, process control and life monitoring for critical components in gas turbine engines, aircraft and other systems. Accurate forward and inverse modeling for RUS requires a proper accounting of the propagation of uncertainty due to the model and measurement sources. A process for quantifying the propagation of uncertainty to RUS frequency results for models and measurements was developed. Epistemic and aleatory sources of uncertainty were identified for forward model parameters, forward model material property and geometry inputs, inverse model parameters, and physical RUS measurements. RUS model parametric studies were then conducted for simple geometric samples to determine the sensitivity of RUS frequencies and model inversion results to the various sources of uncertainty. The results of these parametric studies were used to calculate uncertainty bounds associated with each source. Uncertainty bounds were then compared to assess the relative impact of the various sources of uncertainty, and mitigations were identified. The elastic material property inputs for forward models, such as Young's Modulus, were found to be the most significant source of uncertainty in these studies. The end result of this work was the development of an uncertainty quantification process that can be adapted to a broad range of components and materials. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESONANT ultrasound spectroscopy KW - UNCERTAINTY (Information theory) KW - NONDESTRUCTIVE testing KW - ELASTICITY KW - SENSITIVITY analysis N1 - Accession Number: 113073548; Biedermann, Eric 1; Email Address: ebiedermann@vibrantndt.com Jauriqui, Leanne 1; Email Address: ljauriqui@vibrantndt.com Aldrin, John C. 2; Email Address: aldrin@computationaltools.com Mayes, Alexander 1; Email Address: amayes@vibrantndt.com Williams, Tom 1; Email Address: twilliams@vibrantndt.com Mazdiyasni, Siamack 3; Email Address: siamack.mazdiyasni@us.af.mil; Affiliation: 1: Vibrant Corporation, Albuquerque, NM 87113, USA 2: Computational Tools, Gurnee, IL 60031, USA 3: Air Force Research Laboratory (AFRL/RXCA), Wright-Patterson AFB, OH 45433, USA; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: RESONANT ultrasound spectroscopy; Subject Term: UNCERTAINTY (Information theory); Subject Term: NONDESTRUCTIVE testing; Subject Term: ELASTICITY; Subject Term: SENSITIVITY analysis; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 10p; Illustrations: 2 Color Photographs, 1 Diagram, 1 Chart, 10 Graphs; Document Type: Article L3 - 10.1063/1.4940526 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073548&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blackshire, James L. AU - Na, Jeong K. AU - Freed, Shaun T1 - Root-Cause Estimation of Ultrasonic Scattering Signatures within a Complex Textured Titanium. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 8 PB - American Institute of Physics SN - 0094243X AB - The nondestructive evaluation of polycrystalline materials has been an active area of research for many decades, and continues to be an area of growth in recent years. Titanium alloys in particular have become a critical material system used in modern turbine engine applications, where an evaluation of the local microstructure properties of engine disk/blade components is desired for performance and remaining life assessments. Current NDE methods are often limited to estimating ensemble material properties or detecting localized voids, inclusions, or damage features within a material. Recent advances in computational NDE and material science characterization methods are providing new and unprecedented access to heterogeneous material properties, which permits microstructure-sensing interactions to be studied in detail. In the present research, Integrated Computational Materials Engineering (ICME) methods and tools are being leveraged to gain a comprehensive understanding of root-cause ultrasonic scattering processes occurring within a textured titanium aerospace material. A combination of destructive, nondestructive, and computational methods are combined within the ICME framework to collect, holistically integrate, and study complex ultrasound scattering using realistic 2-dimensional representations of the microstructure properties. Progress towards validating the computational sensing methods are discussed, along with insight into the key scattering processes occurring within the bulk microstructure, and how they manifest in pulse-echo immersion ultrasound measurements. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ROOT cause analysis KW - ULTRASONIC scattering KW - TITANIUM alloys KW - MICROSTRUCTURE KW - AEROSPACE materials N1 - Accession Number: 113073547; Blackshire, James L. 1; Email Address: James.Blackshire@wpafb.af.mil Na, Jeong K. 2 Freed, Shaun 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RXCA), Wright-Patterson AFB, OH 45433 2: WYLE Laboratories, Beavercreek, Ohio, 45433; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: ROOT cause analysis; Subject Term: ULTRASONIC scattering; Subject Term: TITANIUM alloys; Subject Term: MICROSTRUCTURE; Subject Term: AEROSPACE materials; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 8p; Illustrations: 1 Color Photograph, 2 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1063/1.4940525 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073547&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Criner, Amanda K. AU - Schehl, Norman T1 - Analysis of Non-contact Acousto-Thermal Signature Data. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 6 PB - American Institute of Physics SN - 0094243X AB - The non-contact acousto-thermal signature (NCATS) is a nondestructive evaluation technique with potential to detect fatigue in materials such as noisy titanium and polymer matrix composites. The determination of underlying physical mechanisms and properties may be determined by parameter estimation via nonlinear regression. The nonlinear regression analysis formulation, including the underlying models, is discussed. Several models and associated data analyses are given along with the assumptions implicit in the underlying model. The results of these analyses are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL analysis KW - NONDESTRUCTIVE testing KW - MATERIALS -- Fatigue KW - TITANIUM compounds KW - POLYMERIC composites KW - NONLINEAR regression N1 - Accession Number: 113073588; Criner, Amanda K. 1; Email Address: amanda.criner.1@us.af.mil Schehl, Norman 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, OH 45433-7817 2: University of Dayton Research Institute, Structural Integrity Division, 300 College Park, Dayton, OH 45469-0120; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: THERMAL analysis; Subject Term: NONDESTRUCTIVE testing; Subject Term: MATERIALS -- Fatigue; Subject Term: TITANIUM compounds; Subject Term: POLYMERIC composites; Subject Term: NONLINEAR regression; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 6p; Illustrations: 1 Color Photograph, 4 Graphs; Document Type: Article L3 - 10.1063/1.4940566 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073588&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dierken, Josiah AU - Criner, Amanda AU - Zicht, Tyler T1 - Evaluation of Uncertainty in Handheld Terahertz Spectroscopy. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 8 PB - American Institute of Physics SN - 0094243X AB - Advances in terahertz spectroscopy have shown it to be an effective tool for the inspection of polymers and ceramics in laboratory environments. Furthermore, recent work has shown promise that terahertz reflectance spectroscopy may be effectively applied to surface characterization of CMCs and PMCs to investigate chemical changes resulting from thermal degradation. However, even under tightly controlled laboratory conditions, various sources of uncertainty such as surface variability, ambient atmospheric conditions, as well as measurement errors within the system will be present. The analysis of measurement uncertainty is further complicated by the fact that reflectance spectra are constituted by the nonlinear relationship between the dielectric spectra and the reflectance spectra, thereby making model calibration more difficult as compared to transmission and absorbance spectroscopy. As inspections transition from laboratory to field-level applications sources of uncertainty must be considered to properly assess the health of a material with any means of statistical significance. In this study, spectra from terahertz spectroscopy systems are investigated to assess the variation in measurement uncertainty. By characterizing the uncertainty variation, recommendations are proposed for improving inspection procedures in both laboratory and field-level NDE. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TERAHERTZ spectroscopy KW - INSPECTION & review KW - POLYMERS -- Analysis KW - CERAMIC materials KW - REFLECTANCE spectroscopy KW - LABORATORIES N1 - Accession Number: 113073583; Dierken, Josiah 1; Email Address: )josiah.dierken.ctr@us.af.mil Criner, Amanda 2; Email Address: amanda.criner.1@us.af.mil Zicht, Tyler 3; Email Address: tyler.zicht.ctr@us.af.mil; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469 2: Air Force Research Laboratory, WPAFB, OH 45433 3: Universal Technology Corporation, Beavercreek, OH 45432; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: TERAHERTZ spectroscopy; Subject Term: INSPECTION & review; Subject Term: POLYMERS -- Analysis; Subject Term: CERAMIC materials; Subject Term: REFLECTANCE spectroscopy; Subject Term: LABORATORIES; NAICS/Industry Codes: 541940 Veterinary Services; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 621511 Medical Laboratories; Number of Pages: 8p; Illustrations: 1 Diagram, 9 Graphs; Document Type: Article L3 - 10.1063/1.4940561 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073583&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Freed, Shaun AU - Blackshire, James L. AU - Na, Jeong K. T1 - Ultrasound Finite Element Simulation Sensitivity to Anisotropic Titanium Microstructures. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 7 PB - American Institute of Physics SN - 0094243X AB - Analytical wave models are inadequate to describe complex metallic microstructure interactions especially for near field anisotropic property effects and through geometric features smaller than the wavelength. In contrast, finite element ultrasound simulations inherently capture microstructure influences due to their reliance on material definitions rather than wave descriptions. To better understand and quantify heterogeneous crystal orientation effects to ultrasonic wave propagation, a finite element modeling case study has been performed with anisotropic titanium grain structures. A parameterized model has been developed utilizing anisotropic spheres within a bulk material. The resulting wave parameters are analyzed as functions of both wavelength and sphere to bulk crystal mismatch angle. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRASONIC propagation KW - FINITE element method KW - ANISOTROPIC crystals KW - SENSITIVITY analysis KW - MICROSTRUCTURE N1 - Accession Number: 113073554; Freed, Shaun 1; Email Address: shaun.freed@wyle.com Blackshire, James L. 2; Email Address: james.blackshire@us.af.mil Na, Jeong K. 1; Affiliation: 1: Wyle Laboratories, Indian Ripple Rd., Dayton, OH 45440 2: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RXCA), Wright-Patterson AFB, Ohio 45433; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: ULTRASONIC propagation; Subject Term: FINITE element method; Subject Term: ANISOTROPIC crystals; Subject Term: SENSITIVITY analysis; Subject Term: MICROSTRUCTURE; Number of Pages: 7p; Illustrations: 5 Diagrams, 1 Graph; Document Type: Article L3 - 10.1063/1.4940532 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073554&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lindgren, Eric A. T1 - US Air Force Perspective on Validated NDE - Past, Present, and Future. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 9 PB - American Institute of Physics SN - 0094243X AB - The concept of inspection has accompanied aviation since the work of the Wright Brothers. Inspection for both initial quality/materials acceptance and readiness for flight have been coupled with US Air Force (USAF) since its inception as the US Army Signal Corps. Initial nondestructive evaluation work expanded beyond visual inspection to include radiography and magnetic particle in the 1920's and 1930's as air frames transitioned to metal and engines used higher strength steels. Within the USAF Research and Development community, a Nondestructive Test Section was stood up in 1952 and the Nondestructive Evaluation Branch (NDE) was established in 1974. In 2012 the name was changed to the Materials State Awareness Branch. This name change reflects the evolution from a primary focus on inspections for damage and defects in materials to the characterization of the underlying materials structure that governs properties of the materials of interest for Air Force applications. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - RADIOGRAPHY KW - MAGNETIC particles KW - MATERIALS -- Deterioration KW - UNITED States. Air Force N1 - Accession Number: 113073470; Lindgren, Eric A. 1; Email Address: eric.lindgren@us.af.mil; Affiliation: 1: United States Air Force Research Laboratory Materials and Manufacturing Directorate Materials State Awareness Branch Wright-Patterson AFB, OH 45433; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: NONDESTRUCTIVE testing; Subject Term: RADIOGRAPHY; Subject Term: MAGNETIC particles; Subject Term: MATERIALS -- Deterioration; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 928110 National Security; Number of Pages: 9p; Illustrations: 4 Color Photographs, 1 Diagram; Document Type: Article L3 - 10.1063/1.4940448 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073470&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lindgren, Eric A. T1 - SHM Reliability and Implementation - A Personal Military Aviation Perspective. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 6 PB - American Institute of Physics SN - 0094243X AB - Structural Health Monitoring has been proposed as a solution to address the needs of military aviation to reduce the time and cost to perform nondestructive inspections. While the potential to realize significant benefits exist, there are considerations that have to be addressed before such systems can be integrated into military platforms. Some considerations are pervasive to all aviation, such as how to assess the reliability and reproducible capability of these systems. However, there are other challenges unique to military aviation that must be overcome before these types of systems can be used. This presentation and paper are intended as a complement to the review of the outcome of the SAE G-11 SHM committee special workshop on SHM reliability in April of 2015. It will address challenges unique to military aviation that stem from different approaches to managing structural integrity (i.e. safety), frequency of use, design differences, various maintenance practices, and additional descriptions addressing differences in the execution of inspections. The objective of this presentation is to improve the awareness of the research and development community to the different and unique requirements found in military aviation, including the differences between countries, services, and aircraft type. This information should assist the research and development community in identifying and attacking key challenges. It is not intended to be comprehensive overview of all stakeholders' perspectives, but to serve as a launch point for additional discussion and exploration of opportunities to realize the potential of Structural Health Monitoring to assist in the management of military aviation assets. The views expressed in this publication are those of the author and do not reflect the official policy or position of the United States Air Force, Department of Defense, or the United States Government. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - MILITARY aeronautics KW - STRUCTURAL health monitoring KW - RELIABILITY (Engineering) KW - AIRPLANES -- Design & construction N1 - Accession Number: 113073667; Lindgren, Eric A. 1; Email Address: eric.lindgren@us.af.mil; Affiliation: 1: United States Air Force Research Laboratory, Materials and Manufacturing Directorate, Materials State Awareness Branch, Wright-Patterson AFB, OH 45433; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: NONDESTRUCTIVE testing; Subject Term: MILITARY aeronautics; Subject Term: STRUCTURAL health monitoring; Subject Term: RELIABILITY (Engineering); Subject Term: AIRPLANES -- Design & construction; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 6p; Illustrations: 1 Color Photograph, 1 Graph; Document Type: Article L3 - 10.1063/1.4940645 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073667&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McMahan, Jerry A. AU - Criner, Amanda K. T1 - Statistical Flaw Characterization Through Bayesian Shape Inversion from Scattered Wave Observations. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 10 PB - American Institute of Physics SN - 0094243X AB - A method is discussed to characterize the shape of a flaw from noisy far-field measurements of a scattered wave. The scattering model employed is a two-dimensional Helmholtz equation which quantifies scattering due to interrogating signals from various physical phenomena such as acoustics or electromagnetics. The well-known inherent ill-posedness of the inverse scattering problem is addressed via Bayesian regularization. The method is loosely related to the approach described in [1] which uses the framework of [2] to prove the well-posedness of the infinite-dimensional problem and derive estimates of the error for a particular discretization approach. The method computes the posterior probability density for the flaw shape from the scattered field observations, taking into account prior assumptions which are used to describe any a priori knowledge of the flaw. We describe the computational approach to the forward problem as well as the Markov chain Monte Carlo (MCMC) based approach to approximating the posterior. We present simulation results for some hypothetical flaw shapes with varying levels of observation error and arrangement of observation points. The results show how the posterior probability density can be used to visualize the shape of the flaw taking into account the quantitative confidence in the quality of the estimation and how various arrangements of the measurements and interrogating signals affect the estimation. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BAYESIAN analysis KW - SCATTERING (Physics) KW - HELMHOLTZ equation KW - DISCRETIZATION methods KW - ELECTROMAGNETISM KW - MARKOV chain Monte Carlo N1 - Accession Number: 113073630; McMahan, Jerry A. 1; Email Address: jmcmahan1@udayton.edu Criner, Amanda K. 2; Email Address: amanda.criner.1@us.af.mil; Affiliation: 1: University of Dayton Research Institute Structural Integrity Division 300 College Park Dayton, OH 45469-0120 2: Air Force Research Laboratory Materials and Manufacturing Directorate Wright Patterson AFB OH 45433-7817; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: BAYESIAN analysis; Subject Term: SCATTERING (Physics); Subject Term: HELMHOLTZ equation; Subject Term: DISCRETIZATION methods; Subject Term: ELECTROMAGNETISM; Subject Term: MARKOV chain Monte Carlo; Number of Pages: 10p; Illustrations: 7 Graphs; Document Type: Article L3 - 10.1063/1.4940608 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073630&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mooers, Ryan D. AU - Aldrin, John C. T1 - Effects of Angular Variation on Split D Differential Eddy Current Probe Response. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 9 PB - American Institute of Physics SN - 0094243X AB - The complexity of the models used in validation studies over the last few years has increased. Complexity has been included in the probe operation, the core/coil shape, the inclusion of ferrite cores, and the inclusion of dimension and orientation variation. An issue with these validation studies is there is no quantitative understanding of how a small change in a parameter affects the probe response. This study will look at the variation of probe response over a range of variations in multiple orientations. In addition, a sensitivity study will be performed to determine which orientations produce the greatest variations in response and if there are parameter levels where the response is more affected by the variation. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - ELECTRIC coils KW - FERRITES (Magnetic materials) KW - SENSITIVITY analysis KW - ELECTRIC currents N1 - Accession Number: 113073581; Mooers, Ryan D. 1; Email Address: Ryan.Mooers.1@us.af.mil Aldrin, John C. 2; Affiliation: 1: United States Air Force Research Labs, Materials and Manufacturing Directorate, Structural Materials Division, Materials State Awareness and Supportability Branch, 2230 10th Street Bldg. 655 Rm. 165, Wright Patterson AFB, OH, 45433 2: Computational Tool, 4275 Chatham Av. Gurnee, IL 60031; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: EDDY currents (Electric); Subject Term: ELECTRIC coils; Subject Term: FERRITES (Magnetic materials); Subject Term: SENSITIVITY analysis; Subject Term: ELECTRIC currents; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; Number of Pages: 9p; Illustrations: 1 Color Photograph, 2 Diagrams, 6 Graphs; Document Type: Article L3 - 10.1063/1.4940559 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073581&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Murphy, R. Kim AU - Sabbagh, Harold A. AU - Sabbagh, Elias H. AU - Zhou, Liming AU - Bernacchi, William AU - Aldrin, John C. AU - Forsyth, David AU - Lindgren, Eric T1 - Nondestructive Damage Characterization of Complex Aircraft Structures by Inverse Methods: Advances in Multiscale Models. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 9 PB - American Institute of Physics SN - 0094243X AB - The use of coupled integral equations and anomalous currents allows us to efficiently remove 'background effects' in either forward or inverse modeling. This is especially true when computing the change in impedance due to a small flaw in the presence of a larger background anomaly. It is more accurate than simply computing the response with and without the flaw and then subtracting the two nearly equal values to obtain the small difference due to the flaw. The problem that we address in this paper involves a 'SplitD' probe that includes complex, noncircular coils, as well as ferrite cores, inserted within a bolt hole, and exciting both the bolt hole and an adjacent flaw. This introduces three coupled anomalies, each with its on 'scale.' The largest, of course, is the bolt hole, followed (generally) by the probe, and then the flaw. The overall system is represented mathematically by three coupled volume-integral equations. We describe the development of the model and its code, which is a part of the general eddy-current modeling code, VIC-3DR®. We present initial validation results, as well as a number of model computations with flaws located at various places within the bolt hole. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - AIRFRAMES KW - MULTISCALE modeling KW - EDDY current testing KW - ELECTRIC coils N1 - Accession Number: 113073566; Murphy, R. Kim 1; Email Address: kimmurphy1@aristotle.net Sabbagh, Harold A. 1; Email Address: has@sabbagh.com Sabbagh, Elias H. 1; Email Address: ehs@sabbagh.com Zhou, Liming 1; Email Address: zhou@sabbagh.com Bernacchi, William 2; Email Address: bill@minds-edge.com Aldrin, John C. 3; Email Address: aldrin@computationaltools.com Forsyth, David 4; Email Address: )dforsyth@tri-austin.com Lindgren, Eric 5; Email Address: )Eric.Lindgren@us.af.mil; Affiliation: 1: Victor Technologies, LLC PO Box 7706 Bloomington, IN 47404-7706 USA 2: Minds-Edge LLC Indianapolis, IN 46268 USA 3: Computational Tools Gurnee, IL 630031 USA 4: Texas Reserch Institute Austin Austin, TX 78733-6201 USA 5: Air Force Research Laboratory (AFRL /RXLP) Wright Patterson AFB OH 45433-7817 USA; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: NONDESTRUCTIVE testing; Subject Term: AIRFRAMES; Subject Term: MULTISCALE modeling; Subject Term: EDDY current testing; Subject Term: ELECTRIC coils; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 9p; Illustrations: 6 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1063/1.4940544 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073566&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Oneida, Erin K. AU - Shell, Eric B. AU - Aldrin, John C. AU - Sabbagh, Harold A. AU - Sabbagh, Elias H. AU - Murphy, R. Kim AU - Mazdiyasni, Siamack AU - Lindgren, Eric A. T1 - Flaw Characterization using Inversion of Eddy Current Response and the Effect of Filters and Scan Resolution. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 10 PB - American Institute of Physics SN - 0094243X AB - The objective of this work is to expand eddy current inversion methods to enable estimation of flaw dimensions and orientations for data collected using a variety of scan resolutions and filter configurations. Prior work [1, 2] has demonstrated the capability of applying inverse methods to unfiltered, high-fidelity, automated eddy current data. This has shown advantages over a simple amplitude-based analysis of the data. However, to apply this approach to data collected using standard depot inspection settings, additional algorithms must be developed. In addition to including a high-pass filter, standard depot surface inspections often involve a part rotating at a constant angular velocity while a probe moves along a linear path. To expand the current inversion capabilities, two options were investigated. The first option involves re-sampling and filtering the forward model prior to inversion. The second option focuses on post-processing the flaw signal to a) effectively remove or minimize the effect of the filter and b) re-sample the data to have a pre-determined, uniform sample-point spacing. To validate the developed algorithms, data were collected by rotating a part while sampling along a linear path, and a 20 Hz high-pass filter was applied. The complete set of inversion algorithms was then used, and the resulting estimates of flaw length, depth, width, and orientation were in good agreement with the corresponding estimates determined using the original, high-fidelity, unfiltered data. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - HIGHPASS electric filters KW - ESTIMATION theory KW - SIGNAL processing KW - DATA analysis N1 - Accession Number: 113073580; Oneida, Erin K. 1; Email Address: erin.oneida@wyle.com Shell, Eric B. 1; Email Address: eric.shell@wyle.com Aldrin, John C. 2; Email Address: aldrin@computationaltools.com Sabbagh, Harold A. 3; Email Address: has@sabbagh.com Sabbagh, Elias H. 3; Email Address: ehs@sabbagh.com Murphy, R. Kim 3; Email Address: rkmurphy@att.net Mazdiyasni, Siamack 4; Email Address: siamack.mazdiyasni@us.af.mil Lindgren, Eric A. 4; Email Address: eric.lindgren@us.af.mil; Affiliation: 1: Wyle Laboratories, Dayton, OH 45440, USA 2: Computational Tools, Gurnee, IL 60031, USA 3: Victor Technologies LLC, Bloomington, IN 47401, USA 4: Air Force Research Laboratory (AFRL/RXCA), Wright-Patterson AFB, OH 45433, USA; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: EDDY currents (Electric); Subject Term: HIGHPASS electric filters; Subject Term: ESTIMATION theory; Subject Term: SIGNAL processing; Subject Term: DATA analysis; Number of Pages: 10p; Illustrations: 3 Diagrams, 2 Charts, 7 Graphs; Document Type: Article L3 - 10.1063/1.4940558 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073580&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Whitlow, Travis AU - Jones, Eric AU - Przybyla, Craig T1 - Failure Prediction in Ceramic Composites Using Acoustic Emission and Digital Image Correlation. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 9 PB - American Institute of Physics SN - 0094243X AB - The objective of the work performed here was to develop a methodology for linking in-situ detection of localized matrix cracking to the final failure location in continuous fiber reinforced CMCs. First, the initiation and growth of matrix cracking are measured and triangulated via acoustic emission (AE) detection. High amplitude events at relatively low static loads can be associated with initiation of large matrix cracks. When there is a localization of high amplitude events, a measurable effect on the strain field can be observed. Full field surface strain measurements were obtained using digital image correlation (DIC). An analysis using the combination of the AE and DIC data was able to predict the final failure location. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIGITAL image correlation KW - ACOUSTIC emission KW - CERAMIC materials KW - COMPOSITE materials KW - PREDICTION models KW - FRACTURE mechanics KW - STRAINS & stresses (Mechanics) N1 - Accession Number: 113073476; Whitlow, Travis 1; Email Address: travis.whitlow.ctr@us.af.mil Jones, Eric 2; Email Address: eric.jones.50@us.af.mil Przybyla, Craig 2; Email Address: craig.przybyla@us.af.mil; Affiliation: 1: University of Dayton Research Institute, Dayton, OH, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: DIGITAL image correlation; Subject Term: ACOUSTIC emission; Subject Term: CERAMIC materials; Subject Term: COMPOSITE materials; Subject Term: PREDICTION models; Subject Term: FRACTURE mechanics; Subject Term: STRAINS & stresses (Mechanics); Number of Pages: 9p; Illustrations: 10 Graphs; Document Type: Article L3 - 10.1063/1.4940454 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073476&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhou, Liming AU - Sabbagh, Harold A. AU - Sabbagh, Elias H. AU - Murphy, R. Kim AU - Bernacchi, William AU - Aldrin, John C. AU - Forsyth, David AU - Lindgren, Eric T1 - Eddy-Current NDE Inverse Problem with Sparse Grid Algorithm. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2016/02/05/ VL - 1706 IS - 1 M3 - Article SP - 1 EP - 6 PB - American Institute of Physics SN - 0094243X AB - In model-based inverse problems, the unknown parameters (such as length, width, depth) need to be estimated. When the unknown parameters are few, the conventional mathematical methods are suitable. But the increasing number of unknown parameters will make the computation become heavy. To reduce the burden of computation, the sparse grid algorithm was used in our work. As a result, we obtain a powerful interpolation method that requires significantly fewer support nodes than conventional interpolation on a full grid. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - NONDESTRUCTIVE testing KW - INVERSE problems (Differential equations) KW - ALGORITHMS KW - PARAMETER estimation N1 - Accession Number: 113073575; Zhou, Liming 1; Email Address: zhou@sabbagh.com Sabbagh, Harold A. 1; Email Address: has@sabbagh.com Sabbagh, Elias H. 1; Email Address: ehs@sabbagh.com Murphy, R. Kim 1; Email Address: kimmurphyl@aristotle.net Bernacchi, William 2; Email Address: bill@minds-edge.com Aldrin, John C. 3; Email Address: aldrin@computationaltools.com Forsyth, David 4; Email Address: dforsyth@tri-austin.com Lindgren, Eric 5; Email Address: Eric.Lindgren@us.af.mil; Affiliation: 1: Victor Technologies, LLC PO Box 7706 Bloomington, IN 47404-7706 USA 2: Minds-Edge LLC Indianapolis, IN 46268 USA 3: Computational Tools Gurnee, IL 630031 USA 4: Texas Reserch Institute Austin Austin, TX 78733-6201 USA 5: Air Force Research Laboratory (AFRL /RXLP) Wright Patterson AFB OH 45433-7817 USA; Source Info: 2016, Vol. 1706 Issue 1, p1; Subject Term: EDDY currents (Electric); Subject Term: NONDESTRUCTIVE testing; Subject Term: INVERSE problems (Differential equations); Subject Term: ALGORITHMS; Subject Term: PARAMETER estimation; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 6p; Illustrations: 2 Diagrams, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.4940553 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113073575&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Karayan, Ahmad Ivan AU - Jata, Kumar AU - Velez, Michael AU - Castaneda, Homero T1 - On exfoliation corrosion of alloy 2060 T8E30 in an aggressive acid environment. JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2016/02/05/ VL - 657 M3 - Article SP - 546 EP - 558 SN - 09258388 AB - In this study, we investigated exfoliation corrosion (EFC) of the alloy 2060 T3E80 in an aggressive solution, namely EXCO. The pH value increased from 0.25 at the initial time point to 3.45 after 96 h of testing. In Stage 1 (0.25 < pH < 3.00), the pH value increased significantly and the aluminum surface experienced anodic dissolution. During this step, a massive hydrogen evolution reaction was observed, and pits formed due to the galvanic effect between the anodic and cathodic sites. The electrochemical impedance spectroscopy (EIS) test and equivalent analogs suggest that the inductive loop at low Nyquist frequencies and phase angle plots correspond to the adsorbed intermediates in the reduction reaction. In Stage 2 (3.00 < pH < 3.45), the pH value slowly increased. The continuous pits along the grain boundaries produced intergranular corrosion (IGC) during this stage. A small amount of delamination occurred at this stage. In Stage 3, pH remains constant and IGC extensively propagate, allowing the accumulation of white gelatinous corrosion products under the grains. These, along with hydrogen bubbles underneath the grain, exerted pressure to the grain that was attacked by IGC, resulting in a lifting of the grain. The grain lifting at this stage was abundant. It is clear from the cyclic potentiodynamic polarization and scanning electron microscopy images that the pits formed on this alloy surface in the EXCO solution can be attributed to fall-out of particles instead of passive film breakdown. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORROSION & anti-corrosives KW - DISSOLUTION (Chemistry) KW - ALUMINUM alloys KW - METALLIC surfaces KW - HYDROGEN-ion concentration KW - HYDROGEN evolution reactions KW - Alloy 2060 KW - EXCO solution KW - Exfoliation corrosion KW - Intergranular corrosion N1 - Accession Number: 111320130; Karayan, Ahmad Ivan 1 Jata, Kumar 2 Velez, Michael 2 Castaneda, Homero 3; Email Address: hcastaneda@tamu.edu; Affiliation: 1: Department of Chemical and Biomolecular Engineering, the University of Akron, Akron, OH 44304, USA 2: US Air Force Research Laboratory, Dayton, OH 45433, USA 3: Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA; Source Info: Feb2016, Vol. 657, p546; Subject Term: CORROSION & anti-corrosives; Subject Term: DISSOLUTION (Chemistry); Subject Term: ALUMINUM alloys; Subject Term: METALLIC surfaces; Subject Term: HYDROGEN-ion concentration; Subject Term: HYDROGEN evolution reactions; Author-Supplied Keyword: Alloy 2060; Author-Supplied Keyword: EXCO solution; Author-Supplied Keyword: Exfoliation corrosion; Author-Supplied Keyword: Intergranular corrosion; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.jallcom.2015.10.082 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111320130&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harris, J. R. AU - Jensen, K. L. AU - Shiffler, D. A. T1 - Edge enhancement control in linear arrays of ungated field emitters. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2016/02/04/ VL - 119 IS - 4 M3 - Article SP - 1 EP - 8 PB - American Institute of Physics SN - 00218979 AB - In arrays of ungated field emitters, the field enhancement factor of each emitter decreases as the distance between the emitters decreases, an effect known as screening. At the edge of these arrays, emitters experience reduced screening, leading to higher field enhancement factors than emitters at the array center, causing nonuniform emission across the array. Here, we consider this effect in linear arrays of ungated field emitters spaced at distances comparable to their heights, which is the regime that generally maximizes their average current density. A Line Charge Model is used to assess the degree to which these edge effects propagate into the array interior, and to study the impact of varying the height, location, and tip radius of emitters at the ends of an array on the edge enhancement. It is shown that each of these techniques can accomplish this edge enhancement control, but each has advantages and disadvantages that will be discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIELD emission KW - RESEARCH KW - EMITTER-coupled logic circuits KW - CHARGE transfer KW - ELECTRIC charge & distribution KW - ELECTRON beams N1 - Accession Number: 112699817; Harris, J. R. 1 Jensen, K. L. 2 Shiffler, D. A. 3; Affiliation: 1: U.S. Navy Reserve, Navy Operational Support Center New Orleans, New Orleans, Louisiana 70143, USA 2: Code 6364, Naval Research Laboratory, Washington, DC 20375, USA 3: Directed Energy Directorate, Air Force Research Laboratory, Albuquerque, New Mexico 87117, USA; Source Info: 2016, Vol. 119 Issue 4, p1; Subject Term: FIELD emission; Subject Term: RESEARCH; Subject Term: EMITTER-coupled logic circuits; Subject Term: CHARGE transfer; Subject Term: ELECTRIC charge & distribution; Subject Term: ELECTRON beams; Number of Pages: 8p; Illustrations: 2 Color Photographs, 1 Black and White Photograph, 3 Charts, 6 Graphs; Document Type: Article L3 - 10.1063/1.4940410 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112699817&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rasskazov, Ilia L. AU - Karpov, Sergei V. AU - Panasyuk, George Y. AU - Markel, Vadim A. T1 - Overcoming the adverse effects of substrate on the waveguiding properties of plasmonic nanoparticle chains. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2016/02/04/ VL - 119 IS - 4 M3 - Article SP - 1 EP - 8 PB - American Institute of Physics SN - 00218979 AB - We have studied numerically the propagation of surface plasmon polaritons (SPPs) in linear periodic chains of plasmonic nanoparticles of different shapes. The chains are deposited on top of a thick dielectric substrate. While in many commonly considered cases the substrate tends to suppress the SPP propagation, we have found that this adverse effect is practically absent in the case when the nanoparticles have the shape of oblate spheroids with sufficiently small aspect ratio (e.g., nanodisks) whose axes of symmetry coincide with the axis of the chain. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLARITONS KW - RESEARCH KW - SURFACE plasmon resonance KW - PLASMONS (Physics) KW - NANOPARTICLES KW - DIELECTRICS N1 - Accession Number: 112699814; Rasskazov, Ilia L. 1 Karpov, Sergei V. 1,2,3 Panasyuk, George Y. 4 Markel, Vadim A. 5; Email Address: vmarkel@mail.med.upenn.edu; Affiliation: 1: Siberian Federal University, 660041 Krasnoyarsk, Russia 2: L. V. Kirensky Institute of Physics, 660036 Krasnoyarsk, Russia 3: Siberian State Aerospace University, 660014 Krasnoyarsk, Russia 4: Aerospace Systems Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 5: Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel UMR 7249, 13013 Marseille, France; Source Info: 2016, Vol. 119 Issue 4, p1; Subject Term: POLARITONS; Subject Term: RESEARCH; Subject Term: SURFACE plasmon resonance; Subject Term: PLASMONS (Physics); Subject Term: NANOPARTICLES; Subject Term: DIELECTRICS; Number of Pages: 8p; Illustrations: 3 Color Photographs, 6 Graphs; Document Type: Article L3 - 10.1063/1.4940415 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112699814&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Day, Paul N. AU - Pachter, Ruth AU - Nguyen, Kiet A. AU - Bigioni, Terry P. T1 - Linear and Nonlinear Optical Response in Silver Nanoclusters: Insight from a Computational Investigation. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2016/02/04/ VL - 120 IS - 4 M3 - Article SP - 507 EP - 518 SN - 10895639 AB - We report a density functional theory (DFT) and time-dependent DFT (TDDFT) investigation of the thiolated silver nanoclusters [Ag44(SR)30]4-, Ag14(SR)12(PR'3)8, Ag31(SG)19, Ag32(SG)19, and Ag15(SG)11, which were synthesized and for which one-photon absorption (OPA) characterization is available. Our computational investigation based on careful examination of the exchange-correlation functional used in DFT geometry optimization and for the linear optical properties predictions by TDDFT, demonstrated good agreement with the measured linear absorption spectra, however dependent on the applied functional. Following the benchmarking, we evaluated the two-photon absorption (TPA) response using TDDFT, noting that accurate prediction of OPA is important for suppositions on the spectral range for TPA enhancement because of the sensitivity to the excitation energies. Although the TPA cross-section results are complicated by resonance effects and quantifying TPA cross sections for these systems is difficult, our results indicate that the nanoclusters Ag15 and Ag31/32 are likely to have large TPA cross sections. The spherical symmetry of the Ag44 and Ag14 nanoclusters leads to applicability of superatom theory, while it is not as useful for the more oblate geometries of the Ag15 and Ag31/32 systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILVER nanoparticles KW - ATOMIC clusters KW - LIGHT absorption KW - OPTICAL properties KW - TIME-dependent density functional theory KW - NONLINEAR analysis N1 - Accession Number: 113269018; Day, Paul N. 1,2; Email Address: paul.day.4.ctr@us.af.mil Pachter, Ruth 1; Email Address: ruth.pachter@us.af.mil Nguyen, Kiet A. 1,3 Bigioni, Terry P. 4,5; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate Wright-Patterson Air Force Base, Ohio 45433, United States 2: General Dynamics Information Technology, Inc, Dayton Ohio 45431, United States 3: UES, Inc, Dayton Ohio 45432, United States 4: Department of Chemistry, University of Toledo, Toledo, Ohio 43606, United States 5: The School of Solar and Advanced Renewable Energy, University of Toledo, Toledo, Ohio 43606, United States; Source Info: Feb2016, Vol. 120 Issue 4, p507; Subject Term: SILVER nanoparticles; Subject Term: ATOMIC clusters; Subject Term: LIGHT absorption; Subject Term: OPTICAL properties; Subject Term: TIME-dependent density functional theory; Subject Term: NONLINEAR analysis; Number of Pages: 12p; Document Type: Article L3 - 10.1021/acs.jpca.5b09623 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113269018&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 112068154 T1 - Long-acting Reversible Contraception Uptake and Continuation in a Universal Healthcare System. AU - Chiles, Daniel P. AU - Roberts, Timothy A. AU - Klein, David A. Y1 - 2016/02/02/Feb2016 Supplement N1 - Accession Number: 112068154. Language: English. Entry Date: In Process. Revision Date: 20160106. Publication Type: Article. Supplement Title: Feb2016 Supplement. Journal Subset: Allied Health; Nursing; Peer Reviewed; Public Health; USA. NLM UID: 9102136. SP - S79 EP - S80 JO - Journal of Adolescent Health JF - Journal of Adolescent Health JA - J ADOLESC HEALTH VL - 58 IS - 2 CY - New York, New York PB - Elsevier Science SN - 1054-139X AD - United States Army AD - United States Air Force DO - 10.1016/j.jadohealth.2015.10.172 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=112068154&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Kuether, Robert J. AU - Allen, Matthew S. AU - Hollkamp, Joseph J. T1 - Modal Substructuring of Geometrically Nonlinear Finite-Element Models. JO - AIAA Journal JF - AIAA Journal Y1 - 2016/02// VL - 54 IS - 2 M3 - Article SP - 691 EP - 702 SN - 00011452 AB - The efficiency of a modal substructuring method depends on the component modes used to reduce each subcomponent model. Methods such as Craig-Bampton have been used extensively to reduce linear finite-element models with thousands or even millions of degrees of freedom down orders of magnitude while maintaining acceptable accuracy. A novel reduction method is proposed here for geometrically nonlinear finite-element models using the fixed-interface and constraint modes of the linearized system to reduce each subcomponent model. The geometric nonlinearity requires an additional cubic and quadratic polynomial function in the modal equations, and the nonlinear stiffness coefficients are determined by applying a series of static loads and using the finite-element code to compute the response. The geometrically nonlinear, reduced modal equations for each subcomponent are then coupled by satisfying compatibility and force equilibrium. This modal substructuring approach is an extension of the Craig-Bampton method and is readily applied to geometrically nonlinear models built directly within commercial finite-element packages. The efficiency of this new approach is demonstrated on two example problems: one that couples two geometrically nonlinear beams at a shared rotational degree of freedom, and another that couples an axial spring element to the axial degree of freedom of a geometrically nonlinear beam. The nonlinear normal modes of the assembled models are compared with those of a truth model to assess the accuracy of the novel modal substructuring approach. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUBSTRUCTURING techniques KW - NONLINEAR models (Statistics) KW - FINITE element method KW - DEGREES of freedom KW - STIFFNESS (Mechanics) N1 - Accession Number: 114466413; Kuether, Robert J. 1 Allen, Matthew S. 2 Hollkamp, Joseph J. 3,4; Affiliation: 1: Sandia National Laboratories§, Albuquerque, New Mexico 87185 2: Associate Professor, Department of Engineering Physics, 535 Engineering Research Building, 1500 Engineering Drive, University of Wisconsin-Madison, Madison, Wisconsin 53706-1609 3: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 4: Senior Aerospace Engineer, Structural Sciences Center, RQHF, 2790 D Street, Building 65; Source Info: Feb2016, Vol. 54 Issue 2, p691; Subject Term: SUBSTRUCTURING techniques; Subject Term: NONLINEAR models (Statistics); Subject Term: FINITE element method; Subject Term: DEGREES of freedom; Subject Term: STIFFNESS (Mechanics); Number of Pages: 12p; Document Type: Article L3 - 10.2514/1.J054036 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114466413&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Granlund, Kenneth O. AU - Ol, Michael V. AU - Bernal, Luis P. T1 - Nonlinearity of Apparent Mass for Multielement Bodies. JO - AIAA Journal JF - AIAA Journal Y1 - 2016/02// VL - 54 IS - 2 M3 - Article SP - 771 EP - 776 SN - 00011452 KW - NONLINEAR theories KW - MASS transfer KW - PRESSURE KW - VISCOUS flow KW - REYNOLDS number KW - UNSTEADY flow (Fluid dynamics) N1 - Accession Number: 114466421; Granlund, Kenneth O. 1; Email Address: kenneth.granlund@gmail.com Ol, Michael V. 1 Bernal, Luis P. 2; Affiliation: 1: Aerospace Systems Directorate, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Department of Aerospace Engineering, University of Michigan, Ann Arbor, Michigan 48109; Source Info: Feb2016, Vol. 54 Issue 2, p771; Subject Term: NONLINEAR theories; Subject Term: MASS transfer; Subject Term: PRESSURE; Subject Term: VISCOUS flow; Subject Term: REYNOLDS number; Subject Term: UNSTEADY flow (Fluid dynamics); Number of Pages: 6p; Document Type: Article L3 - 10.2514/1.J054214 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114466421&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 113041938 T1 - Methadone overdose causing acute cerebellitis and multi-organ damage. AU - Rando, Jessica AU - Szari, Sofia AU - Kumar, Gogi AU - Lingadevaru, Hemanth Y1 - 2016/02// N1 - Accession Number: 113041938. Language: English. Entry Date: 20160615. Revision Date: 20160622. Publication Type: journal article. Journal Subset: Allied Health; Biomedical; Double Blind Peer Reviewed; Peer Reviewed; USA. NLM UID: 8309942. KW - Methadone -- Poisoning KW - Overdose -- Therapy KW - Cerebellar Diseases -- Therapy KW - Multiple Organ Dysfunction Syndrome -- Therapy KW - Cerebellar Diseases -- Chemically Induced KW - Multiple Organ Dysfunction Syndrome -- Chemically Induced KW - Male KW - Adolescence KW - Tomography, X-Ray Computed KW - Magnetic Resonance Imaging SP - 343.e1 EP - 343.e3 JO - American Journal of Emergency Medicine JF - American Journal of Emergency Medicine JA - AM J EMERG MED VL - 34 IS - 2 CY - Philadelphia, Pennsylvania PB - Elsevier Inc. SN - 0735-6757 AD - Wright State University, 3640 Colonel Glenn Hwy, Dayton, OH AD - Dayton Children's Hospital, 1 Childrens Plz, Dayton, OH; United States Air Force, 1 Wright Patterson Afb #A271, Dayton, OH AD - Dayton Children's Hospital, 1 Childrens Plz, Dayton, OH U2 - PMID: 26164407. DO - 10.1016/j.ajem.2015.06.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=113041938&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Kulatilaka, Waruna AU - Roy, Sukesh AU - Jiang, Naibo AU - Gord, James T1 - Photolytic-interference-free, femtosecond, two-photon laser-induced fluorescence imaging of atomic oxygen in flames. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2016/02// VL - 122 IS - 2 M3 - Article SP - 1 EP - 7 PB - Springer Science & Business Media B.V. SN - 09462171 AB - Ultrashort-pulse lasers are well suited for nonlinear diagnostic techniques such as two-photon laser-induced fluorescence (TPLIF) because the signals generated scale as the laser intensity squared. Furthermore, the broad spectral bandwidths associated with nearly Fourier-transform-limited ultrashort pulses effectively contribute to efficient nonlinear excitation by coupling through a large number of in-phase photon pairs, thereby producing strong fluorescence signals. Additionally, femtosecond (fs)-duration amplified laser systems typically operate at 1-10 kHz repetition rates, enabling high-repetition-rate imaging in dynamic environments. In previous experiments, we have demonstrated utilization of fs pulses for kilohertz (kHz)-rate, interference-free imaging of atomic hydrogen (H) in flames. In the present study, we investigate the utilization of fs-duration pulses to photolytic-interference-free TPLIF imaging of atomic oxygen (O). In TPLIF of O, photodissociation of vibrationally excited carbon dioxide (CO) is known to be the prominent interference that produces additional O atoms in the medium. We have found that through the use of fs excitation, such interferences can be virtually eliminated in premixed laminar methane flames, which paves the way for two-dimensional imaging of O at kHz data rates. Such measurements can provide critical data for validating complex, multidimensional turbulent-combustion models as well as for investigating flame dynamics in practical combustion devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FEMTOSECOND lasers KW - PHOTON beams KW - EXCITATION spectrum KW - LASER-induced fluorescence KW - FLUORESCENCE KW - OXYGEN N1 - Accession Number: 112692600; Kulatilaka, Waruna Roy, Sukesh 1; Email Address: sroy@woh.rr.com Jiang, Naibo 1 Gord, James 2; Email Address: james.gord@us.af.mil; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield Street, Suite 301 Dayton 45431 USA 2: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB 45433 USA; Source Info: Feb2016, Vol. 122 Issue 2, p1; Subject Term: FEMTOSECOND lasers; Subject Term: PHOTON beams; Subject Term: EXCITATION spectrum; Subject Term: LASER-induced fluorescence; Subject Term: FLUORESCENCE; Subject Term: OXYGEN; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1007/s00340-016-6330-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112692600&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Myers, J. AU - Mou, S. AU - Chen, K.-H. AU - Zhuang, Y. T1 - Scanning microwave microscope imaging of micro-patterned monolayer graphene grown by chemical vapor deposition. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2016/02//2/1/2016 VL - 108 IS - 5 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00036951 AB - Characterization of micro-patterned chemical vapor deposited monolayer graphene using a scanning microwave microscope has been presented. Monolayer graphene sheets deposited on a copper substrate were transferred to a variety of substrates and micro-patterned into a periodic array of parallel lines. The measured complex reflection coefficients exhibit a strong dependency on the operating frequency and on the samples' electrical conductivity and permittivity. The experiments show an extremely high sensitivity by detecting image contrast between single and double layer graphene sheets. Correlating the images recorded at the half- and quarter-wavelength resonant frequencies shows that the relative permittivity of the single layer graphene sheet is above 105. The results are in good agreement with the three dimensional numerical electromagnetic simulations. This method may be instrumental for a comprehensive understanding of the scanning microwave microscope image contrast and provide a unique technique to estimate the local electrical properties with nano-meter scale spatial resolution of two dimensional materials at radio frequency. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONOMOLECULAR films KW - RESEARCH KW - CHEMICAL vapor deposition KW - SUBSTRATES (Materials science) KW - ELECTRIC conductivity -- Research KW - PERMITTIVITY KW - RADIO frequency N1 - Accession Number: 112847531; Myers, J. 1 Mou, S. 2 Chen, K.-H. 3 Zhuang, Y. 1; Affiliation: 1: Department of Electrical Engineering, Wright State University, Dayton, Ohio 45435, USA 2: Materials Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 3: Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, Taiwan; Source Info: 2/1/2016, Vol. 108 Issue 5, p1; Subject Term: MONOMOLECULAR films; Subject Term: RESEARCH; Subject Term: CHEMICAL vapor deposition; Subject Term: SUBSTRATES (Materials science); Subject Term: ELECTRIC conductivity -- Research; Subject Term: PERMITTIVITY; Subject Term: RADIO frequency; Number of Pages: 5p; Illustrations: 3 Color Photographs, 2 Graphs; Document Type: Article L3 - 10.1063/1.4940991 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112847531&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - AU - Drew Jr., W. E.1 T1 - Historical dictionary of international intelligence. JO - Choice: Current Reviews for Academic Libraries JF - Choice: Current Reviews for Academic Libraries J1 - Choice: Current Reviews for Academic Libraries PY - 2016/02// Y1 - 2016/02// VL - 53 IS - 6 CP - 6 M3 - Book Review SP - 866 EP - 866 SN - 00094978 KW - Nonfiction KW - Intelligence service -- History KW - West, Nigel KW - Historical Dictionary of International Intelligence (Book) N1 - Accession Number: 112611787; Authors: Drew Jr., W. E. 1; Affiliations: 1: Air Force Research Laboratory; Subject: Historical Dictionary of International Intelligence (Book); Subject: West, Nigel; Subject: Intelligence service -- History; Subject: Nonfiction; Number of Pages: 1/4p; Record Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=112611787&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - Braginsky, M. AU - Przybyla, C.P. T1 - Simulation of crack propagation/deflection in ceramic matrix continuous fiber reinforced composites with weak interphase via the extended finite element method. JO - Composite Structures JF - Composite Structures Y1 - 2016/02// VL - 136 M3 - Article SP - 538 EP - 545 SN - 02638223 AB - Toughness in continuous ceramic fiber reinforced ceramic matrix composites (CMCs) with dense matrices depends on the properties of the fiber coating or interphase. Multiple criteria have been proposed to describe the mechanism of crack propagation/deflection at the filament scale in brittle matrix continuous fiber reinforced composites; however, most of these criteria fail to account for the presence of an interphase of finite thickness and/or employ unrealistic boundary conditions. Recent simulations employing the extended finite element method (XFEM) have shown that variations in interphase thickness and strength relative to the fibers and/or matrix can have a significant influence on the crack propagation/deflection mechanism. It is shown that primary crack deflection most often occurs when conditions favor secondary cracking in the interphase in front of an approaching matrix crack. Although this mechanism is similar to that argued by Cook and Gordon (1964), the simulations here indicate that the conditions for secondary crack initiation and deflection of the primary crack can be much different than that which was originally presented in their analytical model. Variations in the properties of the interphase are simulated to produce large deviations in the local crack growth behavior as a matrix crack grows into interphase. Results are discussed relative to what has been observed experimentally. [ABSTRACT FROM AUTHOR] AB - Copyright of Composite Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRACK propagation (Fracture mechanics) KW - COMPUTER simulation KW - CERAMIC materials KW - FINITE element method KW - FIBROUS composites KW - CERAMIC fibers KW - Ceramic matrix composites KW - Crack deflection KW - Fracture KW - XFEM N1 - Accession Number: 111184903; Braginsky, M. 1,2 Przybyla, C.P. 1; Email Address: craig.przybyla@us.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 2: University of Dayton Research Institute, Dayton, OH, USA; Source Info: Feb2016, Vol. 136, p538; Subject Term: CRACK propagation (Fracture mechanics); Subject Term: COMPUTER simulation; Subject Term: CERAMIC materials; Subject Term: FINITE element method; Subject Term: FIBROUS composites; Subject Term: CERAMIC fibers; Author-Supplied Keyword: Ceramic matrix composites; Author-Supplied Keyword: Crack deflection; Author-Supplied Keyword: Fracture; Author-Supplied Keyword: XFEM; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 327999 All Other Miscellaneous Nonmetallic Mineral Product Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.compstruct.2015.10.038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111184903&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Berke, R. AU - Sebastian, C. AU - Chona, R. AU - Patterson, E. AU - Lambros, J. T1 - High Temperature Vibratory Response of Hastelloy-X: Stereo-DIC Measurements and Image Decomposition Analysis. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2016/02// VL - 56 IS - 2 M3 - Article SP - 231 EP - 243 SN - 00144851 AB - The mechanical behavior of solids in combined high-temperature and vibratory environments, such as those experienced during hypersonic flight, are historically not well explored. In this work on Hastelloy-X plates, elevated temperatures were achieved by induction heating and periodic vibratory loading was applied using a shaker. Surface displacements and strains were measured using stereo digital image correlation (DIC) in the blue spectrum to alleviate issues associated with thermal radiation. Through the use of image decomposition techniques the resultant high-quality experimental data were used to validate numerical simulations of combined thermoacoustic loading. The simulations were based on the deformed shape and the corresponding temperature distributions measured experimentally as well as taking into account the thermal dependence of Hastelloy-X mechanical properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Mechanical properties KW - RESEARCH KW - DIGITAL image correlation KW - VIBRATION (Mechanics) -- Research KW - STRAINS & stresses (Mechanics) KW - INDUCTION heating KW - THERMOACOUSTICS KW - High temperature measurement KW - Image decomposition analysis KW - Induction heating KW - Stereo digital image correlation KW - Thermo-acoustic loading N1 - Accession Number: 112860926; Berke, R.; Email Address: ryan.berke@usu.edu Sebastian, C. 1 Chona, R. 2 Patterson, E. 1 Lambros, J. 3; Affiliation: 1: School of Engineering, University of Liverpool, The Quadrangle, Brownlow Hill Liverpool L69 3GH UK 2: Structural Sciences Center, U.S. Air Force Research Laboratory, Dayton 45433 USA 3: Department of Aerospace Engineering, University of Illinois, Urbana-Champaign, 306 Talbot Lab Urbana 61801 USA; Source Info: Feb2016, Vol. 56 Issue 2, p231; Subject Term: MATERIALS -- Mechanical properties; Subject Term: RESEARCH; Subject Term: DIGITAL image correlation; Subject Term: VIBRATION (Mechanics) -- Research; Subject Term: STRAINS & stresses (Mechanics); Subject Term: INDUCTION heating; Subject Term: THERMOACOUSTICS; Author-Supplied Keyword: High temperature measurement; Author-Supplied Keyword: Image decomposition analysis; Author-Supplied Keyword: Induction heating; Author-Supplied Keyword: Stereo digital image correlation; Author-Supplied Keyword: Thermo-acoustic loading; Number of Pages: 13p; Document Type: Article L3 - 10.1007/s11340-015-0092-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112860926&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kudithipudi, Dhireesha AU - Saleh, Qutaiba AU - Merkel, Cory AU - Thesing, James AU - Wysocki, Bryant AU - Serb, Alexantrou AU - Jie Han T1 - Design and Analysis of a Neuromemristive Reservoir Computing Architecture for Biosignal Processing. JO - Frontiers in Neuroscience JF - Frontiers in Neuroscience Y1 - 2016/02//2/1/2016 M3 - Article SP - 1 EP - 17 SN - 16624548 AB - Reservoir computing (RC) is gaining traction in several signal processing domains, owing to its non-linear stateful computation, spatiotemporal encoding, and reduced training complexity over recurrent neural networks (RNNs). Previous studies have shown the effectiveness of software-based RCs for a wide spectrum of applications. A parallel body of work indicates that realizing RNN architectures using custom integrated circuits and reconfigurable hardware platforms yields significant improvements in power and latency. In this research, we propose a neuromemristive RC architecture, with doubly twisted toroidal structure, that is validated for biosignal processing applications. We exploit the device mismatch to implement the random weight distributions within the reservoir and propose mixed-signal subthreshold circuits for energy efficiency. A comprehensive analysis is performed to compare the efficiency of the neuromemristive RC architecture in both digital(reconfigurable) and subthreshold mixed-signal realizations. Both Electroencephalogram (EEG) and Electromyogram (EMG) biosignal benchmarks are used for validating the RC designs. The proposed RC architecture demonstrated an accuracy of 90 and 84%for epileptic seizure detection and EMG prosthetic finger control, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Frontiers in Neuroscience is the property of Frontiers Media S.A. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIGNAL processing -- Research KW - RECURRENT neural networks KW - EMG signal processing KW - epileptic seizure detection and prediction KW - memristors KW - neuromemristive systems KW - neuromorphic KW - neuromorphic hardware KW - process variations KW - reservoir computing N1 - Accession Number: 112729286; Kudithipudi, Dhireesha 1; Email Address: dxkeec@rit.edu Saleh, Qutaiba 1 Merkel, Cory 1 Thesing, James 1 Wysocki, Bryant 2 Serb, Alexantrou 3 Jie Han 4; Affiliation: 1: NanoComputing Research Laboratory, Department of Computer Engineering, Rochester Institute of Technology, Rochester, NY, USA 2: Information Directorate, Air Force Research Laboratory, Rome, NY, USA 3: University of Southampton, UK 4: University of Alberta, Canada; Source Info: 2/1/2016, p1; Subject Term: SIGNAL processing -- Research; Subject Term: RECURRENT neural networks; Author-Supplied Keyword: EMG signal processing; Author-Supplied Keyword: epileptic seizure detection and prediction; Author-Supplied Keyword: memristors; Author-Supplied Keyword: neuromemristive systems; Author-Supplied Keyword: neuromorphic; Author-Supplied Keyword: neuromorphic hardware; Author-Supplied Keyword: process variations; Author-Supplied Keyword: reservoir computing; Number of Pages: 17p; Document Type: Article L3 - 10.3389/fnins.2015.00502 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112729286&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gorham, Leroy A. AU - Rigling, Brian D. T1 - Scene size limits for polar format algorithm. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2016/02// VL - 52 IS - 1 M3 - Article SP - 73 EP - 84 SN - 00189251 AB - Synthetic aperture radar (SAR) is a form of remote sensing where coherent radar echoes transmitted from a moving platform are processed to form an image of a scene, usually on the ground. There are several algorithms that have been developed with varying levels of complexity and accuracy. In applications with large scene size requirements, the choice of image formation algorithm is important. Exact imaging algorithms like the back-projection algorithm (BPA) can form large images without errors, but they are computationally expensive. Another well-known algorithm is the polar format algorithm (PFA), which is significantly faster than BPA, but it uses approximations that cause image errors in large scenes. In this paper, we evaluate the scene size limitations of the PFA in terms of image defocus. This is caused by residual quadratic phase errors that arise due to approximations in the algorithm. We derive this residual quadratic phase error using a Taylor series expansion in the slow time dimension. Then, we derive simplified expressions for image defocus for two flight paths: circular and linear. We also use the Taylor series expansion to derive accurate corrections for image distortion caused by PFA. These distortion corrections are used in conjunction with the residual quadratic phase errors to derive accurate scene size limitations that are notably different from the circular regions of focus determined in earlier works. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYNTHETIC aperture radar -- Image quality KW - COMPUTER algorithms KW - TAYLOR'S series KW - ERROR analysis (Mathematics) KW - SIGNAL-to-noise ratio KW - Approximation algorithms KW - Distortion KW - Error analysis KW - Imaging KW - Radar imaging KW - Synthetic aperture radar KW - Taylor series N1 - Accession Number: 114283532; Gorham, Leroy A. 1 Rigling, Brian D. 2; Affiliation: 1: Air Force Research Laboratory Wright-Patterson Air Force Base, OH, USA 2: Wright State University Dayton, OH, USA; Source Info: Feb2016, Vol. 52 Issue 1, p73; Subject Term: SYNTHETIC aperture radar -- Image quality; Subject Term: COMPUTER algorithms; Subject Term: TAYLOR'S series; Subject Term: ERROR analysis (Mathematics); Subject Term: SIGNAL-to-noise ratio; Author-Supplied Keyword: Approximation algorithms; Author-Supplied Keyword: Distortion; Author-Supplied Keyword: Error analysis; Author-Supplied Keyword: Imaging; Author-Supplied Keyword: Radar imaging; Author-Supplied Keyword: Synthetic aperture radar; Author-Supplied Keyword: Taylor series; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TAES.2015.140853 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114283532&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Paine, Bruce M. AU - Rust, Thomas AU - Moore, Elizabeth A. T1 - Measurement of Temperature in GaN HEMTs by Gate End-to-End Resistance. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices Y1 - 2016/02// VL - 63 IS - 2 M3 - Article SP - 590 EP - 597 SN - 00189383 AB - We have used the gate end-to-end (GEE) resistance method to measure channel temperatures in GaN HEMTs. This method is appealing for its simplicity and sensitivity to temperature immediately adjacent to the base of the gate, where several important degradation mechanisms occur. This region is not normally accessible with optical measurement techniques, due to shadowing by the gate and field plate overhangs; yet, it is considerably hotter than the regions that can be reached with optics. We found agreement with a finite-difference model, with reasonable inputs for the thermal barrier resistance at the SiC–GaN interface and temperature coefficients. We repeated this successfully for a second GaN HEMT technology with a very different gate geometry. Finally, we conducted micro-Raman measurements on FETs from the first technology and found excellent agreement with the GEE measurement, once it had been adapted to the more-distant location of the micro-Raman laser spot, by means of our finite-difference model. We conclude that GEE is a valuable tool, complementary to micro-Raman, for calibrating thermal models. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TEMPERATURE measurements KW - GALLIUM nitride -- Thermal properties KW - RAMAN effect KW - LASER based sensors KW - OPTICAL sensors KW - Characterization KW - Current measurement KW - Electrical resistance measurement KW - Field effect transistors KW - finite-difference model KW - GaN KW - gate metal thermometry KW - HEMT KW - Logic gates KW - Raman spectrometry KW - Resistance KW - Semiconductor device measurement KW - simulation KW - temperature measurement KW - thermal resistance N1 - Accession Number: 112441654; Paine, Bruce M. 1 Rust, Thomas 2 Moore, Elizabeth A. 3; Affiliation: 1: Technology Qualification Group, Boeing Network and Space Systems, El Segundo, CA, USA 2: Thermal Engineering and Products, Boeing Network and Space Systems, El Segundo, CA, USA 3: Air Force Research Laboratory, Wyle Laboratories, Materials and Manufacturing Directorate, Wright Patterson AFB, OH, USA; Source Info: Feb2016, Vol. 63 Issue 2, p590; Subject Term: TEMPERATURE measurements; Subject Term: GALLIUM nitride -- Thermal properties; Subject Term: RAMAN effect; Subject Term: LASER based sensors; Subject Term: OPTICAL sensors; Author-Supplied Keyword: Characterization; Author-Supplied Keyword: Current measurement; Author-Supplied Keyword: Electrical resistance measurement; Author-Supplied Keyword: Field effect transistors; Author-Supplied Keyword: finite-difference model; Author-Supplied Keyword: GaN; Author-Supplied Keyword: gate metal thermometry; Author-Supplied Keyword: HEMT; Author-Supplied Keyword: Logic gates; Author-Supplied Keyword: Raman spectrometry; Author-Supplied Keyword: Resistance; Author-Supplied Keyword: Semiconductor device measurement; Author-Supplied Keyword: simulation; Author-Supplied Keyword: temperature measurement; Author-Supplied Keyword: thermal resistance; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TED.2015.2510610 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112441654&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roman, Abdeel J. AU - Kreitzer, Paul J. AU - Ervin, Jamie S. AU - Hanchak, Michael S. AU - Byrd, Larry W. T1 - Flow pattern identification of horizontal two-phase refrigerant flow using neural networks. JO - International Communications in Heat & Mass Transfer JF - International Communications in Heat & Mass Transfer Y1 - 2016/02// VL - 71 M3 - Article SP - 254 EP - 264 SN - 07351933 AB - In this work, electrical capacitance tomography (ECT) and neural networks were used to automatically identify two-phase flow patterns for refrigerant R-134a flowing in a horizontal tube. In laboratory experiments, high-speed images were recorded for human classification of liquid–vapor flow patterns. The corresponding permittivity data obtained from tomograms was then used to train feedforward neural networks to recognize flow patterns. An objective was to determine which subsets of data derived from tomograms could be used as input data by a neural network to classify nine liquid–vapor flow patterns. Another objective was to determine which subsets of input data provide high identification success when analyzed by a neural network. Transitional flow patterns associated with common horizontal flow patterns were considered. A unique feature of the current work was the use of the vertical center of mass coordinate in pattern classification. The highest classification success rates occurred using neural network input which included the probability density functions (in time) for both spatially averaged permittivity and center of mass location in addition to the four statistical moments (in time) for spatially averaged permittivity data. The combination of these input data resulted in an average success rate of 98.1% for nine flow patterns. In addition, 99% of the experimental runs were either correctly classified or misclassified by only one flow pattern. [ABSTRACT FROM AUTHOR] AB - Copyright of International Communications in Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TWO-phase flow KW - REFRIGERANTS KW - NEURAL networks (Computer science) KW - ELECTRICAL capacitance tomography KW - TUBES KW - PERMITTIVITY KW - PROBABILITY density function KW - Electrical capacitance tomography KW - Neural network KW - Refrigerant N1 - Accession Number: 113105811; Roman, Abdeel J. 1 Kreitzer, Paul J. 2 Ervin, Jamie S. 3; Email Address: jervin1@udayton.edu Hanchak, Michael S. 3 Byrd, Larry W. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: UES Inc., Dayton, OH 45432, USA 3: University of Dayton Research Institute, Dayton, OH 45469-0044, USA; Source Info: Feb2016, Vol. 71, p254; Subject Term: TWO-phase flow; Subject Term: REFRIGERANTS; Subject Term: NEURAL networks (Computer science); Subject Term: ELECTRICAL capacitance tomography; Subject Term: TUBES; Subject Term: PERMITTIVITY; Subject Term: PROBABILITY density function; Author-Supplied Keyword: Electrical capacitance tomography; Author-Supplied Keyword: Neural network; Author-Supplied Keyword: Refrigerant; NAICS/Industry Codes: 331210 Iron and Steel Pipe and Tube Manufacturing from Purchased Steel; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.icheatmasstransfer.2015.12.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113105811&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lin Ma AU - Wickersham, Andrew J. AU - Wenjiang Xu AU - Peltier, Scott J. AU - Ombrello, Timothy M. AU - Carter, Campbell D. T1 - Multi-angular Flame Measurements and Analysis in a Supersonic Wind Tunnel Using Fiber-Based Endoscopes. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2016/02// VL - 138 IS - 2 M3 - Article SP - 021601-1 EP - 021601-10 SN - 07424795 AB - This paper reports new measurements and analysis made in the Research Cell 19 supersonic wind-tunnel facility housed at the Air Force Research Laboratory. The measurements include planar chemiluminescence from multiple angular positions obtained using fiber-based endoscopes (FBEs) and the accompanying velocity fields obtained using particle image velocimetry (PIV). The measurements capture the flame dynamics from different angles (e.g., the top and both sides) simultaneously. The analysis of such data by proper orthogonal decomposition (POD) will also be reported. Nonintrusive and full-field imaging measurements provide a wealth of information for model validation and design optimization of propulsion systems. However, it is challenging to obtain such measurements due to various implementation difficulties such as optical access, thermal management, and equipment cost. This work therefore explores the application of the FBEs for nonintrusive imaging measurements in the supersonic propulsion systems. The FBEs used in this work are demonstrated to overcome many of the practical difficulties and significantly facilitate the measurements. The FBEs are bendable and have relatively small footprints (compared to high-speed cameras), which facilitates line-of-sight optical access. Also, the FBEs can tolerate higher temperatures than high-speed cameras, ameliorating the thermal management issues. Finally, the FBEs, after customization, can enable the capture of multiple images (e.g., images of the flow fields at multi-angles) onto the same camera chip, greatly reducing the equipment cost of the measurements. The multiangle data sets, enabled by the FBEs as discussed above, were analyzed by POD to extract the dominating flame modes when examined from various angular positions. Similar analysis was performed on the accompanying PIV data to examine the corresponding modes of the flow fields. The POD analysis provides a quantitative measure of the dominating spatial modes of the flame and flow structures, and is an effective mathematical tool to extract key physics from large data sets as the high-speed measurements collected in this study. However, the past POD analysis has been limited to data obtained from one orientation only. The availability of data at multiple angles in this study is expected to provide further insights into the flame and flow structures in high-speed propulsion systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLAME KW - RESEARCH KW - SUPERSONIC wind tunnels KW - ENDOSCOPES KW - PARTICLE image velocimetry KW - PROPER orthogonal decomposition N1 - Accession Number: 113413484; Lin Ma 1,2; Email Address: linma@vt.edu Wickersham, Andrew J. 2; Email Address: ajwickersham@gmail.com Wenjiang Xu 1; Email Address: wjxu@vt.edu Peltier, Scott J. 3; Email Address: scott.peltier.4.ctr@us.af.mil Ombrello, Timothy M. 3; Email Address: timothy.ombrello.1@us.af.mil Carter, Campbell D. 3; Email Address: campbell.carter@us.af.mil; Affiliation: 1: Department of Aerospace and Ocean Engineering, Virginia Tech, Blacksburg, VA 24061 2: Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061 3: Air Force Research Laboratory, Dayton, OH 45433; Source Info: Feb2016, Vol. 138 Issue 2, p021601-1; Subject Term: FLAME; Subject Term: RESEARCH; Subject Term: SUPERSONIC wind tunnels; Subject Term: ENDOSCOPES; Subject Term: PARTICLE image velocimetry; Subject Term: PROPER orthogonal decomposition; Number of Pages: 10p; Document Type: Article L3 - 10.1115/1.4031306 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113413484&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Scott-Emuakpor, Onome AU - Holycross, Casey AU - George, Tommy AU - Knapp, Kevin AU - Beck, Joseph T1 - Fatigue and Strength Studies of Titanium 6AI-4V Fabricated by Direct Metal Laser Sintering. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2016/02// VL - 138 IS - 2 M3 - Article SP - 022101-1 EP - 022101-7 SN - 07424795 AB - Vibratory bending fatigue behavior of titanium 6AI-4V plate specimens manufactured via direct metal laser sintering (DMLS), powder bed fusion additive manufacturing (AM), is assessed. Motivation for the work is based on unprecedented performance demands for sixth-generation gas turbine engine technology that requires complex, lightweight components. Due to cost, schedule, and feasibility limitations associated with conventional manufacturing, AM aims to address ubiquitous component concepts. Though AM has promise in the engine community, process controls necessary for consistent material properties remain an enigma. The following manuscript compares variability of DMLS fatigue and strength to cold-rolled data. Results show discrepancies between DMLS and cold-rolled for fatigue and microstructure characteristics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM -- Fatigue KW - STRENGTH of materials -- Testing KW - DIRECT metal laser sintering KW - THREE-dimensional printing KW - MICROSTRUCTURE N1 - Accession Number: 113413486; Scott-Emuakpor, Onome 1; Email Address: onome.scott-emuakpor.1@us.at.mil Holycross, Casey 1; Email Address: casey.holycross@us.af.mil George, Tommy 1; Email Address: tommy.george@us.af.mil Knapp, Kevin 2; Email Address: kevin.knapp.3@us.af.mil Beck, Joseph 3; Email Address: joe_a_beck@yahoo.com; Affiliation: 1: Mem. ASME Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, OH 45433 2: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, OH 45433 3: Mem. ASME Perceptive Engineering Analytics, Lino Lakes, MN 55014; Source Info: Feb2016, Vol. 138 Issue 2, p022101-1; Subject Term: TITANIUM -- Fatigue; Subject Term: STRENGTH of materials -- Testing; Subject Term: DIRECT metal laser sintering; Subject Term: THREE-dimensional printing; Subject Term: MICROSTRUCTURE; Number of Pages: 7p; Document Type: Article L3 - 10.1115/1.4031271 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113413486&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heimbuch, Brian K. AU - Wallace, William H. AU - Balzli, Charles L. AU - Laning, Michelle L. AU - Harnish, Delbert A. AU - Wander, Joseph D. T1 - Bioaerosol exposure to personnel in a clinical environment absent patients. JO - Journal of Occupational & Environmental Hygiene JF - Journal of Occupational & Environmental Hygiene Y1 - 2016/02// VL - 13 IS - 2 M3 - Article SP - D11 EP - D15 SN - 15459624 AB - Nosocomial infections pose a significant and escalating threat to both patients and healthcare workers (HCWs). By their nature, hospitals induce antibiotic resistance in virulent and commensal strains, leading to increasingly severe hospital-acquired infections. This study measured environmental exposure experienced by domestic staff cleaning vacated patient rooms of a community hospital to bacteria in ambient bioaerosols. While they cleaned the room, participants wore an N95 filtering facepiece respirator (FFR), from which coupons were cut and bacteria were extracted, cultured and enumerated. Extrapolation to the full area of the respirator yielded measured exposures of 0.2–1.4 × 104colony-forming units/hour, of which ∼97% collected on the front layer of the N95, suggesting a possible role for minimal respiratory protection in nonpatient environments. Random resistance testing of 1.6% of the isolates showed that ∼70% of both Gram-positive and Gram-negative organisms exhibited resistance to oxacillin and ∼9% of the Gram-positives displayed resistance to vancomycin. These data provide an estimate for mask bioaerosol loading that can be used in risk modeling and to refine strategies for reuse of FFRs during critical shortages. [ABSTRACT FROM PUBLISHER] AB - Copyright of Journal of Occupational & Environmental Hygiene is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Antibiotic resistance KW - background KW - hospital KW - infection KW - N95 respirator KW - nosocomial N1 - Accession Number: 112262954; Heimbuch, Brian K. 1; Wallace, William H. 1; Balzli, Charles L. 2; Laning, Michelle L. 3; Harnish, Delbert A. 1; Wander, Joseph D. 4; Affiliations: 1: Applied Research Associates, Engineering Science Division, Panama City, Florida; 2: Universal Technology Corporation, Materials and Manufacturing Division, Dayton, Ohio; 3: Air Force Research Laboratory, Tyndall Air Force Base, Florida; 4: Air Force Civil Engineer Center, Tyndall AFB, Florida; Issue Info: Feb2016, Vol. 13 Issue 2, pD11; Author-Supplied Keyword: Antibiotic resistance; Author-Supplied Keyword: background; Author-Supplied Keyword: hospital; Author-Supplied Keyword: infection; Author-Supplied Keyword: N95 respirator; Author-Supplied Keyword: nosocomial; Number of Pages: 1p; Illustrations: 1 Chart; Document Type: Article L3 - 10.1080/15459624.2015.1091966 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=112262954&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 112262954 T1 - Bioaerosol exposure to personnel in a clinical environment absent patients. AU - Heimbuch, Brian K. AU - Wallace, William H. AU - Balzli, Charles L. AU - Laning, Michelle L. AU - Harnish, Delbert A. AU - Wander, Joseph D. Y1 - 2016/02// N1 - Accession Number: 112262954. Language: English. Entry Date: In Process. Revision Date: 20160901. Publication Type: Article. Journal Subset: Biomedical; Double Blind Peer Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 101189458. SP - D11 EP - D15 JO - Journal of Occupational & Environmental Hygiene JF - Journal of Occupational & Environmental Hygiene JA - J OCCUP ENVIRON HYG VL - 13 IS - 2 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd SN - 1545-9624 AD - Applied Research Associates, Engineering Science Division, Panama City, Florida AD - Universal Technology Corporation, Materials and Manufacturing Division, Dayton, Ohio AD - Air Force Research Laboratory, Tyndall Air Force Base, Florida AD - Air Force Civil Engineer Center, Tyndall AFB, Florida DO - 10.1080/15459624.2015.1091966 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=112262954&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Boakye, Emmanuel E. AU - Mogilevsky, Pavel AU - Parthasarathy, Triplicane A. AU - Keller, Kristin A. AU - Hay, Randall S. AU - Cinibulk, Michael K. T1 - Processing and Testing of RE2Si2O7 Fiber-Matrix Interphases for SiC-SiC Composites. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2016/02// VL - 99 IS - 2 M3 - Article SP - 415 EP - 423 PB - Wiley-Blackwell SN - 00027820 AB - Rare-earth disilicates ( RE2Si2O7) are investigated for use as oxidation-resistant alternatives to carbon or BN fiber-matrix interphases in ceramic matrix composites ( CMC). Dense α, β, γ-Y2Si2O7, and γ-Ho2Si2O7 pellets were formed at 64 MPa and 1050°C-1200°C for 1 h using the field-assisted sintering technique ( FAST). Pellet modulus was measured using nanoindentation, and Vickers hardness was measured at loads of 100, 500, and 1000 g. The sliding stress of SCS-0 SiC fibers incorporated in α-, β-, and γ- RE2Si2O7 matrices were measured by fiber push-out. Deformation of RE2Si2O7 after indentation and after fiber push-out was characterized by TEM. Implications of the results for use of RE2Si2O7 as a fiber-matrix interphase in CMCs are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RARE earths KW - SILICON carbide KW - COMPLEX compounds KW - FIBER-matrix interfaces KW - SINTERING KW - NANOINDENTATION KW - LOADS (Mechanics) KW - VICKERS hardness N1 - Accession Number: 112684804; Boakye, Emmanuel E. 1,2 Mogilevsky, Pavel 1,2 Parthasarathy, Triplicane A. 1,2 Keller, Kristin A. 1,2 Hay, Randall S. 1 Cinibulk, Michael K. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory 2: UES, Inc.; Source Info: Feb2016, Vol. 99 Issue 2, p415; Subject Term: RARE earths; Subject Term: SILICON carbide; Subject Term: COMPLEX compounds; Subject Term: FIBER-matrix interfaces; Subject Term: SINTERING; Subject Term: NANOINDENTATION; Subject Term: LOADS (Mechanics); Subject Term: VICKERS hardness; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 212210 Iron Ore Mining; Number of Pages: 9p; Document Type: Article L3 - 10.1111/jace.13935 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112684804&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grabinski, Christin AU - Sharma, Monita AU - Maurer, Elizabeth AU - Sulentic, Courtney AU - Mohan Sankaran, R. AU - Hussain, Saber T1 - The effect of shear flow on nanoparticle agglomeration and deposition in in vitro dynamic flow models. JO - Nanotoxicology JF - Nanotoxicology Y1 - 2016/02// VL - 10 IS - 1 M3 - Article SP - 74 EP - 83 SN - 17435390 AB - Traditionalin vitrotoxicity experiments typically involve exposure of a mono- or co-culture of cells to nanoparticles (NPs) in static conditions with the assumption of 100% deposition (i.e. dose) of well-dispersed particles. However, cellular dose can be affected by agglomeration and the unique transport kinetics of NPs in biological media. We hypothesize that shear flow can address these issues and achieve more predictable dosage. Here, we compare the behavior of gold NPs with diameters of 5, 10 and 30 nm in static and dynamicin vitromodels. We also utilize transport modeling to approximate the shear rate experienced by the cells in dynamic conditions to evaluate physiological relevance. The transport kinetics show that NP behavior is governed by both gravity and diffusion forces in static conditions and only diffusion in dynamic conditions. Our results reveal that dynamic systems are capable of producing a more predictable dose compared to static systems, which has strong implications for improving repeatability in nanotoxicity assessments. [ABSTRACT FROM PUBLISHER] AB - Copyright of Nanotoxicology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHEAR flow KW - RESEARCH KW - NANOPARTICLES -- Research KW - AGGLOMERATION (Materials) KW - SEDIMENTATION & deposition -- Research KW - RADIATION dosimetry KW - Agglomerate density KW - dosimetry KW - exposure methods KW - nanoparticle transport N1 - Accession Number: 113304877; Grabinski, Christin 1,2 Sharma, Monita 1,3 Maurer, Elizabeth 1 Sulentic, Courtney 3 Mohan Sankaran, R. 2 Hussain, Saber 1,3; Affiliation: 1: Molecular Bioeffects Branch, Air Force Research Laboratory, Wright Patterson Air Force Base, OH, USA, 2: Department of Chemical Engineering, Case Western Reserve University, Cleveland, OH, USA, and 3: Department of Pharmacology & Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, OH, USA; Source Info: Feb2016, Vol. 10 Issue 1, p74; Subject Term: SHEAR flow; Subject Term: RESEARCH; Subject Term: NANOPARTICLES -- Research; Subject Term: AGGLOMERATION (Materials); Subject Term: SEDIMENTATION & deposition -- Research; Subject Term: RADIATION dosimetry; Author-Supplied Keyword: Agglomerate density; Author-Supplied Keyword: dosimetry; Author-Supplied Keyword: exposure methods; Author-Supplied Keyword: nanoparticle transport; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 10p; Document Type: Article L3 - 10.3109/17435390.2015.1018978 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113304877&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gruneisen, Mark T. AU - Sickmiller, Brett A. AU - Flanagan, Michael B. AU - Black, James P. AU - Stoltenberg, Kurt E. AU - Duchane, Alexander W. T1 - Adaptive spatial filtering of daytime sky noise in a satellite quantum key distribution downlink receiver. JO - Optical Engineering JF - Optical Engineering Y1 - 2016/02// VL - 55 IS - 2 M3 - Article SP - 1 EP - 11 SN - 00913286 AB - Spatial filtering is an important technique for reducing sky background noise in a satellite quantum key distribution downlink receiver. Atmospheric turbulence limits the extent to which spatial filtering can reduce sky noise without introducing signal losses. Using atmospheric propagation and compensation simulations, the potential benefit of adaptive optics (AO) to secure key generation (SKG) is quantified. Simulations are performed assuming optical propagation from a low-Earth-orbit satellite to a terrestrial receiver that includes AO. Higher-order AO correction is modeled assuming a Shack--Hartmann wavefront sensor and a continuous-face-sheet deformable mirror. The effects of atmospheric turbulence, tracking, and higher-order AO on the photon capture efficiency are simulated using statistical representations of turbulence and a time-domain wave-optics hardware emulator. SKG rates are calculated for a decoy-state protocol as a function of the receiver field of view for various strengths of turbulence, sky radiances, and pointing angles. The results show that at fields of view smaller than those discussed by others, AO technologies can enhance SKG rates in daylight and enable SKG where it would otherwise be prohibited as a consequence of background optical noise and signal loss due to propagation and turbulence effects. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BEAMFORMING KW - RESEARCH KW - ADAPTIVE optics KW - QUANTUM information theory KW - CRYPTOGRAPHY KW - NOISE KW - adaptive optics KW - cryptography KW - decoy states KW - quantum information KW - quantum key distribution KW - sky radiance N1 - Accession Number: 113493171; Gruneisen, Mark T. 1 Sickmiller, Brett A. 2 Flanagan, Michael B. 2 Black, James P. 3 Stoltenberg, Kurt E. 3 Duchane, Alexander W. 1; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, 3550 Aberdeen Avenue S.E., Kirtland Air Force Base, New Mexico 87117-5776, United States 2: Leidos, 2109 Air Park Road S.E., Albuquerque, New Mexico 87106, United States 3: Boeing Company, P.O. Box 5670, Albuquerque, New Mexico 87185, United States; Source Info: Feb2016, Vol. 55 Issue 2, p1; Subject Term: BEAMFORMING; Subject Term: RESEARCH; Subject Term: ADAPTIVE optics; Subject Term: QUANTUM information theory; Subject Term: CRYPTOGRAPHY; Subject Term: NOISE; Author-Supplied Keyword: adaptive optics; Author-Supplied Keyword: cryptography; Author-Supplied Keyword: decoy states; Author-Supplied Keyword: quantum information; Author-Supplied Keyword: quantum key distribution; Author-Supplied Keyword: sky radiance; Number of Pages: 11p; Document Type: Article L3 - 10.1117/1.OE.55.2.026104 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113493171&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhdanov, Boris V. AU - Rotondaro, Matthew D. AU - Shaffer, Michael K. AU - Knize, Randall J. T1 - Low-pressure cesium and potassium diode pumped alkali lasers: pros and cons. JO - Optical Engineering JF - Optical Engineering Y1 - 2016/02// VL - 55 IS - 2 M3 - Article SP - 1 EP - 6 SN - 00913286 AB - This paper presents the results of our experiments on a comparative study of cesium and potassium diode pumped alkali lasers (DPALs) aimed to determine which of these two lasers has more potential to scale to high powers. For both lasers, we have chosen a "low-pressure DPAL approach," which uses buffer gas pressure of about 1 atm for spin-orbit mixing of the excited states of alkali atoms to provide population inversion in the gain medium. The goal of this study was to determine power-limiting effects, which affect the performance of these DPALs, and find out how these limiting effects can be mitigated. We studied the performance of both lasers in CW and pulsed modes using both static and flowing gain medium and pump with different pulse duration. We observed output power degradation in time from the initial value to the level corresponding to the CW mode of operation. As a result of this study, some essential positive and negative features of both DPALs were revealed, which should be taken into account for power-scaling experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CESIUM KW - RESEARCH KW - GAS lasers KW - LASERS KW - DIODES KW - ATOMS KW - atomic gas lasers KW - diode pumped alkali lasers KW - diode-pumped KW - lasers N1 - Accession Number: 113493172; Zhdanov, Boris V. 1; Email Address: boris.zhdanov.ctr@usafa.edu Rotondaro, Matthew D. 1 Shaffer, Michael K. 1 Knize, Randall J. 1; Affiliation: 1: United States Air Force Academy, Laser and Optics Research Center, 2354 Fairchild Drive, Suite 2A31, USAF Academy, Colorado 80840, United States; Source Info: Feb2016, Vol. 55 Issue 2, p1; Subject Term: CESIUM; Subject Term: RESEARCH; Subject Term: GAS lasers; Subject Term: LASERS; Subject Term: DIODES; Subject Term: ATOMS; Author-Supplied Keyword: atomic gas lasers; Author-Supplied Keyword: diode pumped alkali lasers; Author-Supplied Keyword: diode-pumped; Author-Supplied Keyword: lasers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1117/1.OE.55.2.026105 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113493172&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patnaik, Anil K. AU - Roy, Sukesh AU - Gord, James R. T1 - Ultrafast saturation of electronic-resonance-enhanced coherent anti-Stokes Raman scattering and comparison for pulse durations in the nanosecond to femtosecond regime. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2016/02// VL - 93 IS - 2 M3 - Article SP - 1 EP - 1 SN - 10502947 AB - The saturation threshold of a probe pulse in an ultrafast electronic-resonance-enhanced (ERE) coherent anti-Stokes Raman spectroscopy (CARS) configuration is calculated. We demonstrate that while the underdamping condition is a sufficient condition for saturation of ERE-CARS with the long-pulse excitations, a transient gain must be achieved to saturate the ERE-CARS signal for the ultrafast probe regime. We identify that the area under the probe pulse can be used as a definitive parameter to determine the criterion for a saturation threshold for ultrafast ERE-CARS. From a simplified analytical solution and a detailed numerical calculation based on density-matrix equations, the saturation threshold of ERE-CARS is compared for a wide range of probe-pulse durations from the 10-ns to the 10-fs regime. The theory explains both qualitatively and quantitatively the saturation thresholds of resonant transitions and also gives a predictive capability for other pulse duration regimes. The presented criterion for the saturation threshold will be useful in establishing the design parameters for ultrafast ERE-CARS. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS periodicals KW - ANTI-Stokes scattering KW - PICOSECOND pulses KW - FEMTOSECOND pulses KW - PATNAIK, Anil K. KW - ROY, Sukesh KW - GORD, James R. N1 - Accession Number: 117404284; Patnaik, Anil K. 1,2; Email Address: anil.patnaik@wright.edu Roy, Sukesh 3; Email Address: roy.sukesh@gmail.com Gord, James R. 1; Email Address: james.gord@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Department of Physics, Wright State University, Dayton, Ohio 45435, USA 3: Spectral Energies, LLC, 5100 Springfield Street, Dayton, Ohio 45431, USA; Source Info: Feb2016, Vol. 93 Issue 2, p1; Subject Term: PHYSICS periodicals; Subject Term: ANTI-Stokes scattering; Subject Term: PICOSECOND pulses; Subject Term: FEMTOSECOND pulses; People: PATNAIK, Anil K.; People: ROY, Sukesh; People: GORD, James R.; Number of Pages: 1p; Document Type: Article L3 - 10.1103/PhysRevA.93.023812 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117404284&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adams, S. F. AU - Demidov, V. I. AU - Bogdanov, E. A. AU - Koepke, M. E. AU - Kudryavtsev, A. A. AU - Kurlyandskaya, I. P. T1 - Control of plasma properties in a short direct-current glow discharge with active boundaries. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2016/02// VL - 23 IS - 2 M3 - Article SP - 024501-1 EP - 024501-4 PB - American Institute of Physics SN - 1070664X AB - To demonstrate controlling electron/metastable density ratio and electron temperature by applying negative voltages to the active (conducting) discharge wall in a low-pressure plasma with nonlocal electron energy distribution function, modeling has been performed in a short (lacking the positivecolumn region) direct-current glow discharge with a cold cathode. The applied negative voltage can modify the trapping of the low-energy part of the energetic electrons that are emitted from the cathode sheath and that arise from the atomic and molecular processes in the plasma within the device volume. These electrons are responsible for heating the slow, thermal electrons, while production of slow electrons (ions) and metastable atoms is mostly due to the energetic electrons with higher energies. Increasing electron temperature results in increasing decay rate of slow, thermal electrons (ions), while decay rate of metastable atoms and production rates of slow electrons (ions) and metastable atoms practically are unchanged. The result is in the variation of electron/metastable density ratio and electron temperature with the variation of the wall negative voltage. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA (Ionized gases) KW - ELECTRON density KW - ELECTRIC potential KW - ELECTRONS KW - CATHODES N1 - Accession Number: 113488696; Adams, S. F. 1 Demidov, V. I. 1,2; Email Address: vladimir.demidov@mail.wvu.edu Bogdanov, E. A. 3 Koepke, M. E. 2 Kudryavtsev, A. A. 3 Kurlyandskaya, I. P. 4; Affiliation: 1: Air Force Research Laboratory, WPAFB, Ohio 45433, USA 2: West Virginia University, Morgantown, West Virginia 26506, USA 3: St. Petersburg State University, St. Petersburg 199034, Russia 4: St. Petersburg University of State Fire Service of EMERCOM RF, Murmansk Branch, Murmansk 183040, Russia; Source Info: 2016, Vol. 23 Issue 2, p024501-1; Subject Term: PLASMA (Ionized gases); Subject Term: ELECTRON density; Subject Term: ELECTRIC potential; Subject Term: ELECTRONS; Subject Term: CATHODES; Number of Pages: 4p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.4941259 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113488696&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gupta, Amit T1 - Indian is the New Black? The Rise of Indian-Americans on American Television. JO - Round Table JF - Round Table Y1 - 2016/02// VL - 105 IS - 1 M3 - Article SP - 43 EP - 55 SN - 00358533 AB - This article argues that the growing use of Indian-American characters in American television programming results from a combination of societal shifts in the United States as well as changes in the international system—specifically, the increasing ethnic diversity in America as well as the rise of non-western nations as important players in a globalized world that has led to a growing global market for American television programs. Further, the portrayal of such characters also ranges from what the British Broadcasting Corporation calls ‘color-blind casting’ (where the race and ethnicity of characters do not determine or limit the roles they portray) to more stereotypical renderings of the Indian-American community. It concludes by suggesting that changes in demography, as well as market forces within the United States and abroad, will probably lead not only to more Indian-Americans on television but also to their portraying roles that fit into the reality of the Indian-American status and experience in American society. [ABSTRACT FROM AUTHOR] AB - Copyright of Round Table is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TELEVISION programs KW - DEMOGRAPHY KW - MOTION picture industry KW - STEREOTYPES (Social psychology) KW - UNITED States KW - INDIA KW - MUMBAI KW - Bollywood KW - Hollywood KW - Indian-Americans KW - stereotyping KW - television KW - The Simpsons KW - Thugees KW - BRITISH Broadcasting Corp. N1 - Accession Number: 113221427; Gupta, Amit 1; Affiliation: 1: United States Air Force Air War College, Montgomery, USA; Source Info: Feb2016, Vol. 105 Issue 1, p43; Subject Term: TELEVISION programs; Subject Term: DEMOGRAPHY; Subject Term: MOTION picture industry; Subject Term: STEREOTYPES (Social psychology); Subject Term: UNITED States; Subject Term: INDIA; Subject Term: MUMBAI; Author-Supplied Keyword: Bollywood; Author-Supplied Keyword: Hollywood; Author-Supplied Keyword: Indian-Americans; Author-Supplied Keyword: stereotyping; Author-Supplied Keyword: television; Author-Supplied Keyword: The Simpsons; Author-Supplied Keyword: Thugees; Company/Entity: BRITISH Broadcasting Corp. DUNS Number: 877611525; Number of Pages: 13p; Document Type: Article L3 - 10.1080/00358533.2015.1126957 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113221427&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thompson, Gary L. AU - Roth, Caleb C. AU - Kuipers, Marjorie A. AU - Tolstykh, Gleb P. AU - Beier, Hope T. AU - Ibey, Bennett L. T1 - Permeabilization of the nuclear envelope following nanosecond pulsed electric field exposure. JO - Biochemical & Biophysical Research Communications JF - Biochemical & Biophysical Research Communications Y1 - 2016/01/29/ VL - 470 IS - 1 M3 - Article SP - 35 EP - 40 SN - 0006291X AB - Permeabilization of cell membranes occurs upon exposure to a threshold absorbed dose (AD) of nanosecond pulsed electric fields (nsPEF). The ultimate, physiological bioeffect of this exposure depends on the type of cultured cell and environment, indicating that cell-specific pathways and structures are stimulated. Here we investigate 10 and 600 ns duration PEF effects on Chinese hamster ovary (CHO) cell nuclei, where our hypothesis is that pulse disruption of the nuclear envelope membrane leads to observed cell death and decreased viability 24 h post-exposure. To observe short-term responses to nsPEF exposure, CHO cells have been stably transfected with two fluorescently-labeled proteins known to be sequestered for cellular chromosomal function within the nucleus – histone-2b (H2B) and proliferating cell nuclear antigen (PCNA). H2B remains associated with chromatin after nsPEF exposure, whereas PCNA leaks out of nuclei permeabilized by a threshold AD of 10 and 600 ns PEF. A downturn in 24 h viability, measured by MTT assay, is observed at the number of pulses required to induce permeabilization of the nucleus. [ABSTRACT FROM AUTHOR] AB - Copyright of Biochemical & Biophysical Research Communications is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MEMBRANE permeability (Biology) KW - NUCLEAR membranes KW - ABSORBED dose KW - ELECTRIC fields -- Physiological effect KW - CHO cell KW - RESEARCH KW - PROLIFERATING cell nuclear antigen KW - Chromatin KW - Electroporation KW - H2B KW - nsPEF KW - PCNA N1 - Accession Number: 112673571; Thompson, Gary L. 1; Email Address: gary.l.thompson.3@gmail.com Roth, Caleb C. 2 Kuipers, Marjorie A. 3 Tolstykh, Gleb P. 4 Beier, Hope T. 5 Ibey, Bennett L. 3; Affiliation: 1: Oak Ridge Institute for Science & Education, Joint Base San Antonio Fort Sam Houston, TX, 78234, USA 2: Department of Radiological Sciences, University of Texas Health Science Center at San Antonio, TX, 78234, USA 3: Radio Frequency Radiation Branch, Bioeffects Division, Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory, Joint Base San Antonio Fort Sam Houston, TX, 78234, USA 4: General Dynamics IT, Joint Base San Antonio Fort Sam Houston, TX, 78234, USA 5: Optical Radiation Branch, Bioeffects Division, Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory, Joint Base San Antonio Fort Sam Houston, TX, 78234, USA; Source Info: Jan2016, Vol. 470 Issue 1, p35; Subject Term: MEMBRANE permeability (Biology); Subject Term: NUCLEAR membranes; Subject Term: ABSORBED dose; Subject Term: ELECTRIC fields -- Physiological effect; Subject Term: CHO cell; Subject Term: RESEARCH; Subject Term: PROLIFERATING cell nuclear antigen; Author-Supplied Keyword: Chromatin; Author-Supplied Keyword: Electroporation; Author-Supplied Keyword: H2B; Author-Supplied Keyword: nsPEF; Author-Supplied Keyword: PCNA; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.bbrc.2015.12.092 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112673571&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bedford, Nicholas M. AU - Hughes, Zak E. AU - Zhenghua Tang AU - Yue Li AU - Briggs, Beverly D. AU - Yang Ren AU - Swihart, Mark T. AU - Petkov, Valeri G. AU - Naik, Rajesh R. AU - Knecht, Marc R. AU - Walsh, Tiffany R. T1 - Sequence-Dependent Structure/Function Relationships of Catalytic Peptide-Enabled Gold Nanoparticles Generated under Ambient Synthetic Conditions. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2016/01/20/ VL - 138 IS - 2 M3 - Article SP - 540 EP - 548 SN - 00027863 AB - Peptide-enabled nanoparticle (NP) synthesis routes can create and/or assemble functional nanomaterials under environmentally friendly conditions, with properties dictated by complex interactions at the biotic/abiotic interface. Manipulation of this interface through sequence modification can provide the capability for material properties to be tailored to create enhanced materials for energy, catalysis, and sensing applications. Fully realizing the potential of these materials requires a comprehensive understanding of sequence-dependent structure/function relationships that is presently lacking. In this work, the atomic-scale structures of a series of peptidecapped Au NPs are determined using a combination of atomic pair distribution function analysis of high-energy X-ray diffraction data and advanced molecular dynamics (MD) simulations. The Au NPs produced with different peptide sequences exhibit varying degrees of catalytic activity for the exemplar reaction 4-nitrophenol reduction. The experimentally derived atomicscale NP configurations reveal sequence-dependent differences in structural order at the NP surface. Replica exchange with solute-tempering MD simulations are then used to predict the morphology of the peptide overlayer on these Au NPs and identify factors determining the structure/catalytic properties relationship. We show that the amount of exposed Au surface, the underlying surface structural disorder, and the interaction strength of the peptide with the Au surface all influence catalytic performance. A simplified computational prediction of catalytic performance is developed that can potentially serve as a screening tool for future studies. Our approach provides a platform for broadening the analysis of catalytic peptide-enabled metallic NP systems, potentially allowing for the development of rational design rules for property enhancement. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PEPTIDES -- Analysis KW - GOLD nanoparticles KW - DISTRIBUTION (Probability theory) KW - MOLECULAR dynamics KW - NANOSTRUCTURED materials -- Analysis N1 - Accession Number: 112893347; Bedford, Nicholas M. 1,2,3; Email Address: nicholas.bedford@nist.gov Hughes, Zak E. 4 Zhenghua Tang 3,5 Yue Li 6 Briggs, Beverly D. 3,7 Yang Ren 8 Swihart, Mark T. 6 Petkov, Valeri G. 9 Naik, Rajesh R. 2; Email Address: rajesh.naik@us.af.mil Knecht, Marc R. 3; Email Address: knecht@miami.edu Walsh, Tiffany R. 4; Email Address: tiffany.walsh@deakin.edu.au; Affiliation: 1: National Institute of Standards and Technology, Boulder, Colorado 80305, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States 3: Department of Chemistry, University of Miami, Coral Gables, Florida 33146, United States 4: Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia 5: New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China 6: Chemical and Biological Engineering, State University of New York at Buffalo, Buffalo, New York 14260, United States 7: Department of Chemistry, Georgia Southern University, Statesboro, Georgia, 30460, United States 8: Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States 9: Department of Physics, Central Michigan University, Mt. Pleasant, Michigan 48858, United States; Source Info: 1/20/2016, Vol. 138 Issue 2, p540; Subject Term: PEPTIDES -- Analysis; Subject Term: GOLD nanoparticles; Subject Term: DISTRIBUTION (Probability theory); Subject Term: MOLECULAR dynamics; Subject Term: NANOSTRUCTURED materials -- Analysis; Number of Pages: 9p; Document Type: Article L3 - 10.1021/jacs.5b09529 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112893347&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cahay, M. AU - Zhu, W. AU - Fairchild, S. AU - Murray, P. T. AU - Back, T. C. AU - Gruen, G. J. T1 - Multiscale model of heat dissipation mechanisms during field emission from carbon nanotube fibers. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2016/01/18/ VL - 108 IS - 3 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00036951 AB - A multiscale model of field emission (FE) from carbon nanotube fibers (CNFs) is developed, which takes into account Joule heating within the fiber and radiative cooling and the Nottingham effect at the tip of the individual carbon nanotubes (CNTs) in the array located at the fiber tip. The model predicts the fraction of CNTs being destroyed as a function of the applied external electric field and reproduces many experimental features observed in some recently investigated CNFs, such as order of magnitude of the emission current (mA range), low turn on electric field (fraction of V/µm), deviation from pure Fowler-Nordheim behavior at large applied electric field, hysteresis of the FE characteristics, and a spatial variation of the temperature along the CNF axis with a maximum close to its tip of a few hundred °C. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - RESEARCH KW - FIELD emission KW - RESISTANCE heating KW - HEAT losses KW - HYSTERESIS N1 - Accession Number: 112459216; Cahay, M. 1 Zhu, W. 1 Fairchild, S. 2 Murray, P. T. 3,4 Back, T. C. 3,4 Gruen, G. J. 3; Affiliation: 1: Spintronics and Vacuum Nanoelectronics Laboratory, University of Cincinnati, Cincinnati, Ohio 45221, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433, USA 3: Research Institute, University of Dayton, Dayton, Ohio 45469-0170, USA 4: Center of Excellence for Thin Film Research and Surface Engineering, University of Dayton, Dayton, Ohio 45469-0170, USA; Source Info: 1/18/2016, Vol. 108 Issue 3, p1; Subject Term: CARBON nanotubes; Subject Term: RESEARCH; Subject Term: FIELD emission; Subject Term: RESISTANCE heating; Subject Term: HEAT losses; Subject Term: HYSTERESIS; Number of Pages: 5p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.4940390 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112459216&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Koerner, Hilmar AU - Opsitnick, Elizabeth AU - Grabowski, Christopher A. AU - Drummy, Larry F. AU - Hsiao, Ming-Siao AU - Che, Justin AU - Pike, Megan AU - Person, Vernecia AU - Bockstaller, Michael R. AU - Meth, Jeff S. AU - Vaia, Richard A. T1 - Physical aging and glass transition of hairy nanoparticle assemblies. JO - Journal of Polymer Science Part B: Polymer Physics JF - Journal of Polymer Science Part B: Polymer Physics Y1 - 2016/01/15/ VL - 54 IS - 2 M3 - Article SP - 319 EP - 330 SN - 08876266 AB - ABSTRACT Matrix free assemblies of polymer-grafted, 'hairy' nanoparticles (aHNP) exhibit novel morphology, dielectric, and mechanical properties, as well as providing means to overcome dispersion challenges ubiquitous to conventional polymer-inorganic nanocomposite blends. Physical aging of the amorphous polymer glass between the close-packed nanoparticles (NPs) will dominate long-term stability; however, the energetics of volume recovery within the aHNPs is unknown. Herein, we compare glass transition temperature ( Tg) and enthalpy recovery of aHNPs to NP-polymer blends, across different nano-silica loadings (0-50 v/v%) and canopy architecture of polystyrene (PS) grafted silica. For aHNPs, the grafting of PS to silica imposes an additional design constraint between silica volume fraction, graft density, and graft molecular weight. At low and intermediate silica volume fraction, the Tg of blended nanocomposites is independent of silica content, reflecting a neutral polymer-NP interface. For aHNPs, the Tg decreases with silica content, implying that chain tethering decreases local segment density more than the effect of molecular weight or polymer-NP interactions. Additionally, the Tg of the aHNPs is higher than a linear matrix of comparable molecular weight, implying a complementary effect to local segment density that constrains cooperativity. In contrast, enthalpy recovery rate in the blend or aHNP glass is retarded comparably. In addition, a cross-over temperature, Tx, emerges deep within the glass where the enthalpy recovery process of all nanocomposites becomes similar to linear unfilled matrices. Differences between structural recovery in aHNP and blended nanocomposites occur only at the highest silica loadings (∼ 50 v/v%), where enthalpy recovery for aHNPs is substantially suppressed relative to the blended counterparts. The absence of physical aging at these loadings is independent of brush architecture (graft density or molecular weight of tethered chains) and indicates that the impact of chain tethering on effective bulk structural relaxation starts to appear at particle-particle surface separations on the order of the Kuhn length. Overall, these observations can be understood within the context of how three separate structural characteristics impact local segment density and relaxation processes: the dimension and architecture of the tethered polymer chains, the separation between NP surfaces, and the confinement imposed by chain tethering and space filling within the aHNP. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 319-330 [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Polymer Science Part B: Polymer Physics is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAFT copolymers KW - RESEARCH KW - GLASS transitions KW - POLYMERS -- Deterioration KW - POLYMERIC nanocomposites KW - POLYSTYRENE KW - DIELECTRIC properties KW - SURFACE morphology KW - MOLECULAR self-assembly KW - Glass transition temperature KW - Physical aging KW - Polymer grafted nanoparticle KW - Polymer nanocomposite N1 - Accession Number: 111454622; Koerner, Hilmar 1 Opsitnick, Elizabeth 1 Grabowski, Christopher A. 1 Drummy, Larry F. 1 Hsiao, Ming-Siao 1 Che, Justin 1 Pike, Megan 1 Person, Vernecia 2 Bockstaller, Michael R. 3 Meth, Jeff S. 4 Vaia, Richard A. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base 2: Department of Chemistry, Clark Atlanta University 3: Department of Materials Science and Engineering, Carnegie Mellon University 4: DuPont Central Research and Development, E.I. DuPont De Nemours; Source Info: Jan2016, Vol. 54 Issue 2, p319; Subject Term: GRAFT copolymers; Subject Term: RESEARCH; Subject Term: GLASS transitions; Subject Term: POLYMERS -- Deterioration; Subject Term: POLYMERIC nanocomposites; Subject Term: POLYSTYRENE; Subject Term: DIELECTRIC properties; Subject Term: SURFACE morphology; Subject Term: MOLECULAR self-assembly; Author-Supplied Keyword: Glass transition temperature; Author-Supplied Keyword: Physical aging; Author-Supplied Keyword: Polymer grafted nanoparticle; Author-Supplied Keyword: Polymer nanocomposite; NAICS/Industry Codes: 326140 Polystyrene Foam Product Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1002/polb.23931 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111454622&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guy, M.R. AU - Guild, E.M. AU - Young, J.W. AU - Sheets, I.O. AU - Pitz, G.A. T1 - Pressure induced hyperfine shift and broadening rates of the [formula omitted] and [formula omitted] transitions of rubidium with He, Ar, [formula omitted], and [formula omitted]. JO - Journal of Quantitative Spectroscopy & Radiative Transfer JF - Journal of Quantitative Spectroscopy & Radiative Transfer Y1 - 2016/01/15/ VL - 169 M3 - Article SP - 14 EP - 22 SN - 00224073 AB - Pressure induced broadening and spectral shift rates have been resolved for the two ground state hyperfine lines in the 5 2 S 1 / 2 → 6 2 P 1 / 2 and 5 2 S 1 / 2 → 6 2 P 3 / 2 of 85 Rb and 87 Rb in the presence of 5–50 Torr of helium, argon, methane, and ethane. Broadening rates averaged over the hyperfine components, for the P 1 / 2 transition for He, Ar, CH 4 , and C 2 H 6 are 60.2, 45.2, 63.8, and 60.4 MHz/Torr, respectively and 50.4, 42.4, 62.0, and 60.4 MHz/Torr for the P 3 / 2 transition. Average spectral shift rates for the P 1 / 2 transition were found to be 15.7, −11.5, −18.1, and −19.9 MHz/Torr for He, Ar, CH 4 , and C 2 H 6 , respectively, and 3.1, −12.6,−21.8, and −19.9 MHz/Torr for the P 3 / 2 transition. Deviation in broadening and shift rates between hyperfine lines was found to be as high as 16 and 7.6 MHz/Torr respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Quantitative Spectroscopy & Radiative Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERFINE coupling KW - RUBIDIUM KW - TRANSITION metals KW - SPECTRUM analysis KW - LASER beams KW - Diode pumped alkali laser KW - Laser KW - Rubidium KW - Spectroscopy N1 - Accession Number: 111169648; Guy, M.R. 1 Guild, E.M. 2 Young, J.W. 1 Sheets, I.O. 1 Pitz, G.A. 1; Email Address: afrl.rdlaordmailbox@kirtland.af.mil; Affiliation: 1: Air Force Research Laboratory, 3550 Aberdeen Ave SE, Kirtland Air Force Base, NM 87117, United States 2: Leidos, 2109 Air Park Rd SE, Albuquerque, NM 87106, United States; Source Info: Jan2016, Vol. 169, p14; Subject Term: HYPERFINE coupling; Subject Term: RUBIDIUM; Subject Term: TRANSITION metals; Subject Term: SPECTRUM analysis; Subject Term: LASER beams; Author-Supplied Keyword: Diode pumped alkali laser; Author-Supplied Keyword: Laser; Author-Supplied Keyword: Rubidium; Author-Supplied Keyword: Spectroscopy; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jqsrt.2015.09.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111169648&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Iurov, Andrii AU - Gumbs, Godfrey AU - Huang, Danhong AU - Silkin, V. M. T1 - Plasmon dissipation in gapped graphene open systems at finite temperature. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2016/01/15/ VL - 93 IS - 3 M3 - Article SP - 035404-1 EP - 035404-11 SN - 10980121 AB - Numerical and closed-form analytic expressions for plasmon dispersion relations and rates of dissipation are first obtained at finite temperatures for free-standing gapped graphene. These closed-system results are generalized to an open system with Coulomb coupling of graphene electrons to an external electron reservoir. Plasmon modes, as well as plasmon dissipation channels, are found in this open system, including significant modifications arising from the combined effect of thermal excitation of electrons and an energy band gap in gapped graphene. Moreover, the characteristics of the plasmon mode and the additional plasmon dissipation may be fully controlled by adjusting the separation between the graphene layer from the surface of a thick conductor. Numerical results for the thermal shift of plasmon frequency in a doped gapped graphene layer, along with its sensitivity to the local environment, are demonstrated and analyzed. Such phenomenon associated with the frequency shift of plasmons may be applied to direct optical measurement of local electron temperature in transistors and nanoplasmonic structures. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMONS (Physics) KW - TEMPERATURE effect KW - GRAPHENE KW - COULOMB'S law KW - ELECTRONIC excitation N1 - Accession Number: 112717063; Iurov, Andrii 1; Email Address: aiurov@chtm.unm.edu Gumbs, Godfrey 2,3 Huang, Danhong 1,4 Silkin, V. M. 3; Affiliation: 1: Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87106, USA 2: Department of Physics and Astronomy, Hunter College of the City University of New York, 695 Park Avenue, New York, New York 10065, USA 3: Donostia International Physics Center (DIPC), P de Manuel Lardizabal, 4, 20018, San Sebastian, Basque Country, Spain 4: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA; Source Info: Jan2016, Vol. 93 Issue 3, p035404-1; Subject Term: PLASMONS (Physics); Subject Term: TEMPERATURE effect; Subject Term: GRAPHENE; Subject Term: COULOMB'S law; Subject Term: ELECTRONIC excitation; Number of Pages: 11p; Document Type: Article L3 - 10.1103/PhysRevB.93.035404 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112717063&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Penilla, E. H. AU - Hardin, C. L. AU - Kodera, Y. AU - Basun, S. A. AU - Evans, D. R. AU - Garay, J. E. T1 - The role of scattering and absorption on the optical properties of birefringent polycrystalline ceramics: Modeling and experiments on ruby (Cr:Al2O3). JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2016/01/14/ VL - 119 IS - 2 M3 - Article SP - 023106-1 EP - 023106-7 PB - American Institute of Physics SN - 00218979 AB - Light scattering due to birefringence has prevented the use of polycrystalline ceramics with anisotropic optical properties in applications such as laser gain media. However, continued development of processing technology has allowed for very low porosity and fine grains, significantly improving transparency and is paving the way for polycrystalline ceramics to be used in demanding optical applications. We present a method for producing highly transparent Cr3+ doped Al2O3 (ruby) using current activated pressure assisted densification. The one-step doping/densification process produces fine grained ceramics with well integrated (doped) Cr, resulting in good absorption and emission. In order to explain the light transmission properties, we extend the analytical model based on the Rayleigh-Gans-Debye approximation that has been previously used for undoped alumina to include absorption. The model presented captures reflection, scattering, and absorption phenomena in the ceramics. Comparison with measured transmission confirms that the model adequately describes the properties of polycrystalline ruby. In addition the measured emission spectra and emission lifetime are found to be similar to single crystals, confirming the high optical quality of the ceramics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSORPTION KW - SCATTERING (Physics) KW - OPTICAL properties KW - CERAMICS KW - PHYSICS N1 - Accession Number: 112312919; Penilla, E. H. 1 Hardin, C. L. 1 Kodera, Y. 1 Basun, S. A. 2 Evans, D. R. 2 Garay, J. E. 1; Email Address: jegaray@engr.ucr.edu; Affiliation: 1: Materials Science and Engineering Program and Department of Mechanical Engineering, University of California, Riverside, Riverside, California 92521, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, Ohio 45433, USA; Source Info: 2016, Vol. 119 Issue 2, p023106-1; Subject Term: ABSORPTION; Subject Term: SCATTERING (Physics); Subject Term: OPTICAL properties; Subject Term: CERAMICS; Subject Term: PHYSICS; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1063/1.4939090 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112312919&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liang, Qilian AU - Durrani, Tariq S. AU - Pi, Yiming AU - Samn, Sherwood W. T1 - Hybrid Wireless Sensor Networks: Theory and Design. JO - International Journal of Distributed Sensor Networks JF - International Journal of Distributed Sensor Networks Y1 - 2016/01/12/ M3 - Article SP - 1 EP - 2 SN - 15501329 KW - WIRELESS sensor networks KW - DATA transmission systems KW - HYBRID systems KW - WIGNER distribution KW - CEPSTRUM analysis (Mechanics) N1 - Accession Number: 113625685; Liang, Qilian 1 Durrani, Tariq S. 2 Pi, Yiming 3 Samn, Sherwood W. 4; Affiliation: 1: Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX 76019-0016, USA 2: Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow G1 1XQ, UK 3: School of Electronic Engineering, University of Electronic Science and Technology, Chengdu 611731, China 4: Air Force Research Laboratory/RHX, Brooks City Base, San Antonio, TX 78235, USA; Source Info: 1/12/2016, p1; Subject Term: WIRELESS sensor networks; Subject Term: DATA transmission systems; Subject Term: HYBRID systems; Subject Term: WIGNER distribution; Subject Term: CEPSTRUM analysis (Mechanics); Number of Pages: 2p; Document Type: Article L3 - 10.1155/2016/8253168 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113625685&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ariyawansa, Gamini AU - Reyner, Charles J. AU - Steenbergen, Elizabeth H. AU - Duran, Joshua M. AU - Reding, Joshua D. AU - Scheihing, John E. AU - Bourassa, Henry R. AU - Liang, Baolai L. AU - Huffaker, Diana L. T1 - InGaAs/InAsSb strained layer superlattices for mid-wave infrared detectors. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2016/01/11/ VL - 108 IS - 2 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00036951 AB - Investigation of growth and properties of InGaAs/InAsSb strained layer superlattices, identified as ternary strained layer superlattices (ternary SLSs), is reported. The material space for the antimony-based SLS detector development is expanded beyond InAs/InAsSb and InAs/(In)GaSb by incorporating Ga into InAs. It was found that this not only provides support for strain compensation but also enhances the infrared (IR) absorption properties. A unique InGaAs/InAsSb SLS exists when the conduction band of InGaAs aligns with that of InAsSb. The bandgap of this specific InGaAs/InAsSb SLS can then be tuned by adjusting the thickness of both constituents. Due to the enhanced electron-hole wavefunction overlap, a significant increase in the absorption coefficient was theoretically predicted for ternary SLS as compared to current state-of-the-art InAs/InAsSb SLS structures, and an approximately 30%-35% increase in the absorption coefficient was experimentally observed. All the samples examined in this work were designed to have the same bandgap of approximately 0.240 eV (5.6 μm) at 150 K. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDIUM gallium arsenide -- Optical properties KW - STRAINS & stresses (Mechanics) KW - MATERIALS -- Mechanical properties KW - INFRARED radiation KW - EXCITON theory N1 - Accession Number: 112326506; Ariyawansa, Gamini 1; Email Address: gamini.ariyawansa.2@us.af.mil Reyner, Charles J. 1 Steenbergen, Elizabeth H. 1 Duran, Joshua M. 1 Reding, Joshua D. 1 Scheihing, John E. 1 Bourassa, Henry R. 2 Liang, Baolai L. 3 Huffaker, Diana L. 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Department of Physics, University of Dayton, Dayton, Ohio 45469, USA 3: California NanoSystems Institute, University of California, Los Angeles, California 90095, USA; Source Info: 1/11/2016, Vol. 108 Issue 2, p1; Subject Term: INDIUM gallium arsenide -- Optical properties; Subject Term: STRAINS & stresses (Mechanics); Subject Term: MATERIALS -- Mechanical properties; Subject Term: INFRARED radiation; Subject Term: EXCITON theory; Number of Pages: 5p; Illustrations: 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.4939904 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112326506&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - P M Alsing AU - M L Fanto T1 - A discrete analogue for black hole evaporation using approximate analytical solutions of a one-shot decoupling trilinear Hamiltonian. JO - Classical & Quantum Gravity JF - Classical & Quantum Gravity Y1 - 2016/01/07/ VL - 33 IS - 1 M3 - Article SP - 1 EP - 1 SN - 02649381 AB - We present an analytical formulation of the recent one-shot decoupling model of Bràdler and Adami (2015 arXiv:1505.0284) and compute the resulting ‘Page information’ curves, for the reduced density matrices for the evaporating black hole (BH) internal degrees of freedom, and emitted Hawking radiation pairs entangled across the horizon. We argue that BH evaporation/particle production has a very close analogy to the laboratory process of spontaneous parametric down conversion, when the pump is allowed to deplete. [ABSTRACT FROM AUTHOR] AB - Copyright of Classical & Quantum Gravity is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DENSITY matrices KW - RESEARCH KW - KERR black holes KW - QUANTUM entanglement KW - QUANTUM optical phenomena KW - QUANTUM theory N1 - Accession Number: 111541100; P M Alsing 1; Email Address: paul.alsing@us.af.mil M L Fanto 1; Affiliation: 1: Air Force Research Laboratory, Rome, NY, 13441, USA; Source Info: 1/7/2016, Vol. 33 Issue 1, p1; Subject Term: DENSITY matrices; Subject Term: RESEARCH; Subject Term: KERR black holes; Subject Term: QUANTUM entanglement; Subject Term: QUANTUM optical phenomena; Subject Term: QUANTUM theory; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0264-9381/33/1/015005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111541100&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rizzetta, Donald P. AU - Visbal, Miguel R. T1 - Plasma-Based Control of Transition on a Wing with Leading-Edge Excrescence. JO - AIAA Journal JF - AIAA Journal Y1 - 2016/01// VL - 54 IS - 1 M3 - Article SP - 129 EP - 140 SN - 00011452 AB - Large-eddy simulations are carried out to investigate plasma-based flow control that is used to delay transition generated by excrescence on the leading edge of a wing. The wing airfoil section has a geometry that is representative of modern reconnaissance air vehicles and has an appreciable region of laminar flow at design conditions. Modification of the leading edge, which can be caused by the accumulation of debris, insect impacts, microscopic ice crystal formation, damage, or structural fatigue, may result in premature transition and an increase in drag. A dielectric barrier discharge plasma actuator, located downstream of the excrescence, is employed to mitigate transition, decrease drag, and increase energy efficiency. Numerical solutions are obtained to the Navier-Stokes equations that were augmented by source terms used to represent the body force imparted by the plasma actuator on the fluid. A simple phenomenological model provided this force resulting from the electric field generated by the plasma. The numerical method is based upon a high-fidelity numerical scheme and an implicit time-marching approach. An overset mesh system is employed to represent excrescence in the leading-edge region. Solutions are generated for both uniform and distributed excrescence geometries, as well as for the clean wing configuration without leading-edge modification. Results are obtained for two different values of the plasma field strength. Features of the computational flowfields are elucidated, and the effectiveness of control is quantified by comparison with baseline results without plasma actuation. It is found that plasma control can reestablish the laminar flow region lost to excrescence-generated transition and increase the lift-to-drag ratio by up to 8.7%. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA (Ionized gases) KW - PHASE transformations (Physics) KW - AEROFOILS KW - LARGE eddy simulation models KW - PLASMA flow KW - LAMINAR flow N1 - Accession Number: 113072664; Rizzetta, Donald P. 1 Visbal, Miguel R. 2; Affiliation: 1: Senior Research Aerospace Engineer, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512 2: Technical Area Leader, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512; Source Info: Jan2016, Vol. 54 Issue 1, p129; Subject Term: PLASMA (Ionized gases); Subject Term: PHASE transformations (Physics); Subject Term: AEROFOILS; Subject Term: LARGE eddy simulation models; Subject Term: PLASMA flow; Subject Term: LAMINAR flow; Number of Pages: 12p; Document Type: Article L3 - 10.2514/1.J054153 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113072664&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tianxiang Nan AU - Emori, Satoru AU - Bin Peng AU - Xinjun Wang AU - Zhongqiang Hu AU - Li Xie AU - Yuan Gao AU - Hwaider Lin AU - Jie Jiao AU - Haosu Luo AU - Budil, David AU - Jones, John G. AU - Howe, Brandon M. AU - Brown, Gail J. AU - Ming Liu AU - Nian Sun T1 - Control of magnetic relaxation by electric-field-induced ferroelectric phase transition and inhomogeneous domain switching. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2016/01// VL - 108 IS - 1 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00036951 AB - Electric-field modulation of magnetism in strain-mediated multiferroicheterostructures is considered a promising scheme for enabling memory and magnetic microwave devices with ultralow power consumption. However, it is not well understood how electric-field-induced strain influences magnetic relaxation, an important physical process for device applications. Here, we investigate resonant magnetization dynamics in ferromagnet/ferroelectric multiferroicheterostructures, FeGaB/PMN-PT and NiFe/PMN-PT, in two distinct strain states provided by electric-field-induced ferroelectric phase transition. The strain not only modifies magnetic anisotropy but also magnetic relaxation. In FeGaB/PMN-PT, we observe a nearly two-fold change in intrinsic Gilbert damping by electric field, which is attributed to strain-induced tuning of spin-orbit coupling. By contrast, a small but measurable change in extrinsic linewidth broadening is attributed to inhomogeneous ferroelastic domain switching during the phase transition of the PMN-PT substrate. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC relaxation KW - ELECTRIC fields KW - FERROELECTRIC transitions KW - MAGNETISM KW - MICROWAVE devices KW - ELECTRIC power consumption N1 - Accession Number: 112127820; Tianxiang Nan 1 Emori, Satoru 1 Bin Peng 2 Xinjun Wang 1 Zhongqiang Hu 1 Li Xie 1 Yuan Gao 1 Hwaider Lin 1 Jie Jiao 3 Haosu Luo 3 Budil, David 4 Jones, John G. 5 Howe, Brandon M. 5 Brown, Gail J. 5 Ming Liu 2; Email Address: mingliu@mail.xjtu.edu.cn Nian Sun 1; Email Address: n.sun@neu.edu; Affiliation: 1: Department of Electrical and Computer Engineering, Northeastern University, Boston, Massachusetts 02115, USA 2: Electronic Materials Research Laboratory, Xi'an Jiaotong University, Xi'an 710049, China 3: Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China 4: Department of Chemistry, Northeastern University, Boston, Massachusetts 02115, USA 5: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 2016, Vol. 108 Issue 1, p1; Subject Term: MAGNETIC relaxation; Subject Term: ELECTRIC fields; Subject Term: FERROELECTRIC transitions; Subject Term: MAGNETISM; Subject Term: MICROWAVE devices; Subject Term: ELECTRIC power consumption; Number of Pages: 5p; Illustrations: 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.4939441 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112127820&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sculco, Peter AU - Lazaro, Lionel AU - Little, Milton AU - Berkes, Marschall AU - Warner, Stephen AU - Helfet, David AU - Lorich, Dean AU - Sculco, Peter K AU - Lazaro, Lionel E AU - Little, Milton M AU - Berkes, Marschall B AU - Warner, Stephen J AU - Helfet, David L AU - Lorich, Dean G T1 - Dislocation is a risk factor for poor outcome after supination external rotation type ankle fractures. JO - Archives of Orthopaedic & Trauma Surgery JF - Archives of Orthopaedic & Trauma Surgery Y1 - 2016/01// VL - 136 IS - 1 M3 - journal article SP - 9 EP - 15 SN - 09368051 AB - Introduction: Ankle fractures are one of the most common fractures requiring surgical treatment. Ankle fracture-dislocations are significant injuries to the osseous and soft tissue envelope, but studies focused on the effect of dislocation on radiographic and functional outcomes are lacking. The objective of this study was to evaluate the effect of dislocations on postoperative outcomes in SER IV ankle fracture patients.Materials and Methods: From 2004 through 2010, all operative SER IV ankle fractures treated by a single surgeon were enrolled in a prospective database. SER IV ankle fractures were separated into two groups based on clinical or radiographic evidence of dislocation. The primary and secondary functional outcomes measures were the Foot and Ankle Outcome Score (FAOS) and ankle and subtalar range of motion (ROM) with a minimum of 1-year follow-up, respectively.Results: 108 patients with SER IV ankle fractures were identified, with 73 in the non-dislocation group (68%) and 35 patients in the dislocation group (32%). Patient demographics and co-morbidities were similar between the two groups. The incidence of open fractures and the application of an external fixator were significantly higher in the dislocation group (p = 0.037 and p = 0.003, respectively). The dislocation group showed a significant decrease in the accuracy of articular reduction (p = 0.003). At a mean follow-up of 21 months, ankle fracture-dislocation patients had increased pain (p = 0.005) and decreased activities of daily living (p = 0.014) on FAOS outcome measures and significantly worse ankle and subtalar ROM.Conclusions: The results of this study suggest that concurrent dislocation at time of ankle fracture is associated with worse radiographic and functional outcomes, but not an increase in superficial or deep infection. The results from this study may be helpful in counseling patients regarding expected clinical outcomes after ankle fracture-dislocation and in the surgical management of this complex injury. [ABSTRACT FROM AUTHOR] AB - Copyright of Archives of Orthopaedic & Trauma Surgery is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANKLE -- Fractures KW - ANKLE dislocation KW - ANKLE surgery KW - JOINTS (Anatomy) -- Range of motion KW - RADIOGRAPHY KW - Ankle fracture KW - Dislocations KW - Treatment outcome N1 - Accession Number: 112194701; Sculco, Peter 1 Lazaro, Lionel 1 Little, Milton 2 Berkes, Marschall 3 Warner, Stephen 1; Email Address: warners@hss.edu Helfet, David 1 Lorich, Dean 1 Sculco, Peter K 4 Lazaro, Lionel E 4 Little, Milton M 5 Berkes, Marschall B 6 Warner, Stephen J 4 Helfet, David L 4 Lorich, Dean G 4; Affiliation: 1: Department of Orthopedic Surgery, Hospital for Special Surgery, 535 East 70th Street New York 10021 USA 2: Orthopaedic Trauma Service, Cedar Sinai Medical Center, Los Angeles USA 3: United States Air Force, Landstuhl Germany 4: Department of Orthopedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA 5: Orthopaedic Trauma Service, Cedar Sinai Medical Center, Los Angeles, CA, USA 6: United States Air Force, Landstuhl, Germany; Source Info: Jan2016, Vol. 136 Issue 1, p9; Subject Term: ANKLE -- Fractures; Subject Term: ANKLE dislocation; Subject Term: ANKLE surgery; Subject Term: JOINTS (Anatomy) -- Range of motion; Subject Term: RADIOGRAPHY; Author-Supplied Keyword: Ankle fracture; Author-Supplied Keyword: Dislocations; Author-Supplied Keyword: Treatment outcome; Number of Pages: 7p; Illustrations: 2 Black and White Photographs, 2 Charts; Document Type: journal article L3 - 10.1007/s00402-015-2353-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112194701&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 112194701 T1 - Dislocation is a risk factor for poor outcome after supination external rotation type ankle fractures. AU - Sculco, Peter AU - Lazaro, Lionel AU - Little, Milton AU - Berkes, Marschall AU - Warner, Stephen AU - Helfet, David AU - Lorich, Dean AU - Sculco, Peter K AU - Lazaro, Lionel E AU - Little, Milton M AU - Berkes, Marschall B AU - Warner, Stephen J AU - Helfet, David L AU - Lorich, Dean G Y1 - 2016/01// N1 - Accession Number: 112194701. Language: English. Entry Date: 20160826. Revision Date: 20170102. Publication Type: journal article. Journal Subset: Biomedical; Continental Europe; Europe; Peer Reviewed. Instrumentation: Clinical Decision Making in Nursing Scale (CDMNS) (Jenkins); Functional Living Index: Cancer (FLIC) (Schipper et al). NLM UID: 9011043. KW - Fracture Fixation KW - Ankle Joint -- Surgery KW - Dislocations -- Complications KW - Ankle Fractures -- Surgery KW - Human KW - Rotation KW - Dislocations -- Radiography KW - Prospective Studies KW - Ankle Fractures -- Complications KW - Supination KW - Female KW - Aged, 80 and Over KW - Young Adult KW - Range of Motion KW - Adult KW - Treatment Outcomes KW - Middle Age KW - Retrospective Design KW - Ankle Joint -- Radiography KW - Dislocations -- Surgery KW - Ankle Joint -- Physiology KW - Ankle Fractures -- Physiopathology KW - Adolescence KW - Male KW - Case Control Studies KW - Ankle Fractures -- Radiography KW - Risk Factors KW - Aged KW - Recovery KW - Validation Studies KW - Comparative Studies KW - Evaluation Research KW - Multicenter Studies KW - Clinical Assessment Tools KW - Scales SP - 9 EP - 15 JO - Archives of Orthopaedic & Trauma Surgery JF - Archives of Orthopaedic & Trauma Surgery JA - ARCH ORTHOP TRAUMA SURG VL - 136 IS - 1 CY - , PB - Springer Science & Business Media B.V. AB - Introduction: Ankle fractures are one of the most common fractures requiring surgical treatment. Ankle fracture-dislocations are significant injuries to the osseous and soft tissue envelope, but studies focused on the effect of dislocation on radiographic and functional outcomes are lacking. The objective of this study was to evaluate the effect of dislocations on postoperative outcomes in SER IV ankle fracture patients.Materials and Methods: From 2004 through 2010, all operative SER IV ankle fractures treated by a single surgeon were enrolled in a prospective database. SER IV ankle fractures were separated into two groups based on clinical or radiographic evidence of dislocation. The primary and secondary functional outcomes measures were the Foot and Ankle Outcome Score (FAOS) and ankle and subtalar range of motion (ROM) with a minimum of 1-year follow-up, respectively.Results: 108 patients with SER IV ankle fractures were identified, with 73 in the non-dislocation group (68%) and 35 patients in the dislocation group (32%). Patient demographics and co-morbidities were similar between the two groups. The incidence of open fractures and the application of an external fixator were significantly higher in the dislocation group (p = 0.037 and p = 0.003, respectively). The dislocation group showed a significant decrease in the accuracy of articular reduction (p = 0.003). At a mean follow-up of 21 months, ankle fracture-dislocation patients had increased pain (p = 0.005) and decreased activities of daily living (p = 0.014) on FAOS outcome measures and significantly worse ankle and subtalar ROM.Conclusions: The results of this study suggest that concurrent dislocation at time of ankle fracture is associated with worse radiographic and functional outcomes, but not an increase in superficial or deep infection. The results from this study may be helpful in counseling patients regarding expected clinical outcomes after ankle fracture-dislocation and in the surgical management of this complex injury. SN - 0936-8051 AD - Department of Orthopedic Surgery, Hospital for Special Surgery, 535 East 70th Street New York 10021 USA AD - Orthopaedic Trauma Service, Cedar Sinai Medical Center, Los Angeles USA AD - United States Air Force, Landstuhl Germany AD - Department of Orthopedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA AD - Orthopaedic Trauma Service, Cedar Sinai Medical Center, Los Angeles, CA, USA AD - United States Air Force, Landstuhl, Germany U2 - PMID: 26506829. DO - 10.1007/s00402-015-2353-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=112194701&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - O'Hara, P. AU - Hollkamp, J. AU - Duarte, C. AU - Eason, T. T1 - A two-scale generalized finite element method for fatigue crack propagation simulations utilizing a fixed, coarse hexahedral mesh. JO - Computational Mechanics JF - Computational Mechanics Y1 - 2016/01// VL - 57 IS - 1 M3 - Article SP - 55 EP - 74 PB - Springer Science & Business Media B.V. SN - 01787675 AB - This paper presents a two-scale extension of the generalized finite element method (GFEM) which allows for static fracture analyses as well as fatigue crack propagation simulations on fixed, coarse hexahedral meshes. The approach is based on the use of specifically-tailored enrichment functions computed on-the-fly through the use of a fine-scale boundary value problem (BVP) defined in the neighborhood of existing mechanically-short cracks. The fine-scale BVP utilizes tetrahedral elements, and thus offers the potential for the use of a highly adapted fine-scale mesh in the regions of crack fronts capable of generating accurate enrichment functions for use in the coarse-scale hexahedral model. In this manner, automated $$\textit{hp}$$ -adaptivity which can be used for accurate fracture analyses, is now available for use on coarse, uniform hexahedral meshes without the requirements of irregular meshes and constrained approximations. The two-scale GFEM approach is verified and compared against alternative approaches for static fracture analyses, as well as mixed-mode fatigue crack propagation simulations. The numerical examples demonstrate the ability of the proposed approach to deliver accurate results even in scenarios involving multiple discontinuities or sharp kinks within a single computational element. The proposed approach is also applied to a representative panel model similar in design and complexity to that which may be used in the aerospace community. [ABSTRACT FROM AUTHOR] AB - Copyright of Computational Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GENERALIZATION KW - FINITE element method KW - FATIGUE cracks KW - CRACK propagation (Fracture mechanics) KW - SIMULATION methods & models KW - BOUNDARY value problems KW - Computational fracture mechanics KW - Generalized finite elements KW - hp-Methods KW - Multi-scale methods KW - Partition-of-unity methods N1 - Accession Number: 112083882; O'Hara, P. 1; Email Address: patrick.ohara.ctr@wpafb.af.mil Hollkamp, J. 2 Duarte, C. 3 Eason, T. 2; Affiliation: 1: Universal Technology Corporation, 1270 North Fairfield Rd Dayton 45432 USA 2: Air Force Research Laboratory, Structural Sciences Center, WPAFB, Dayton 45433 USA 3: Newmark Laboratory, Department of Civil and Environmental Engineering, University of Illinois, 205 North Mathews Avenue Urbana 61801 USA; Source Info: Jan2016, Vol. 57 Issue 1, p55; Subject Term: GENERALIZATION; Subject Term: FINITE element method; Subject Term: FATIGUE cracks; Subject Term: CRACK propagation (Fracture mechanics); Subject Term: SIMULATION methods & models; Subject Term: BOUNDARY value problems; Author-Supplied Keyword: Computational fracture mechanics; Author-Supplied Keyword: Generalized finite elements; Author-Supplied Keyword: hp-Methods; Author-Supplied Keyword: Multi-scale methods; Author-Supplied Keyword: Partition-of-unity methods; Number of Pages: 20p; Document Type: Article L3 - 10.1007/s00466-015-1221-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112083882&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varshney, Gaiven AU - Kanel, Sushil R. AU - Kempisty, David M. AU - Varshney, Vikas AU - Agrawal, Abinash AU - Sahle-Demessie, Endalkachew AU - Varma, Rajender S. AU - Nadagouda, Mallikarjuna N. T1 - Nanoscale TiO2 films and their application in remediation of organic pollutants. JO - Coordination Chemistry Reviews JF - Coordination Chemistry Reviews Y1 - 2016/01//Jan2016 Part 1 VL - 306 M3 - Article SP - 43 EP - 64 SN - 00108545 AB - Photocatalysis is an advanced process for treatment of air, wastewater, and drinking water, the primary advantage being its ability to mineralize many pollutants. Among several nanoscale arrangements of photocatalysts, there has been a strong push to develop them as thin films because of several advantages when compared to photocatalysts in suspension form. Within this context, the present review aims to provide a comprehensive overview of current knowledge regarding UV/vis and natural solar light photocatalysis of pollutants using titanium dioxide (TiO 2 ) nanoparticles in thin film form. Various synthesis techniques for the assembly of thin films, their characterization and comprehensive experimental results demonstrating their application as photocatalysts for decomposition of organic contaminants are summarized. Finally, current state of the art is discussed with associated challenges for the deployment of thin films for water treatment. [ABSTRACT FROM AUTHOR] AB - Copyright of Coordination Chemistry Reviews is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOCHEMISTRY KW - TITANIUM dioxide films KW - ORGANIC compounds -- Environmental aspects KW - ENVIRONMENTAL remediation KW - PHOTOCATALYSIS KW - WASTEWATER treatment KW - AACVD aerosol-assisted chemical vapor deposition KW - AES Auger electron spectroscopy KW - AFM atomic force microscopy KW - APCVD atmospheric pressure chemical vapor deposition KW - AS atomic spectroscopy KW - AuNp gold nanoparticle KW - CVD chemical vapor deposition KW - Degradation KW - DLS dynamic light scattering KW - Doping KW - Dr- Blade doctor blade method KW - DTA differential thermal analysis KW - EACVD electric field assisted aerosol chemical vapor deposition KW - EDM electrophoretic deposition method KW - EDS X-ray energy dispersive spectroscopy KW - EDX energy dispersive X-ray KW - EPR electron paramagnetic resonance KW - ESCA electron spectroscopy for chemical analysis KW - ESEM environmental scanning electron microscope KW - FESEM field emission scanning electron microscopy KW - FTIR Fourier transform infrared spectroscopy KW - FTO F-doped tin oxide KW - GIXRD high resolution grazing-incidence X-ray diffraction KW - HDM hydrothermal method KW - HOAc acetic acid KW - HRTEM high resolution transmission microscope KW - ITO indium tin oxide KW - LC-MS liquid chromatography mass spectrometry KW - LEIM low energy ion-implantation KW - LIMS laser ionization mass spectrometry KW - MOCVD metal-oxide chemical vapor deposition KW - Natural solar light KW - PACVD photo assisted chemical vapor deposition KW - PCVD plasma chemical vapor deposition KW - PECVD plasma enhanced chemical vapor deposition KW - PEG polyethylene glycol KW - Photocatalysis KW - PL photoluminescence spectra KW - PP polypropylene KW - PV total pore volume KW - PVA polyvinyl alcohol KW - RBS Rutherford backscattering KW - RFPECVD radio frequency plasma enhanced chemical vapor deposition KW - RMS root mean square KW - RSS Raman shift spectroscopy KW - SA surface area KW - SAED selected area electron diffraction KW - sccm standard cubic centimeter per minute KW - SDM Spotter deposition method KW - SEM scanning electron microscope KW - SIMS secondary ion mass spectrometry KW - SM sputtering method KW - SP spray pyrolysis KW - TEM transmission electron microscopy KW - TG thermogravimetric KW - Thin films KW - TiO 2 nanoparticles KW - TiO 2 titanium dioxide KW - TTIP titanium tetraisopropoxide KW - UV–vis ultraviolet and visible light KW - UV-vis-NIR ultraviolet-visible-near infrared KW - UV/visible light KW - XPS X-ray photoelectron spectroscopy KW - XRD X-ray diffraction N1 - Accession Number: 110212995; Varshney, Gaiven 1,2 Kanel, Sushil R. 3; Email Address: sushil.kanel.ctr@afit.edu Kempisty, David M. 3 Varshney, Vikas 4 Agrawal, Abinash 5 Sahle-Demessie, Endalkachew 2 Varma, Rajender S. 2; Email Address: varma.rajender@epa.gov Nadagouda, Mallikarjuna N. 2; Email Address: nadagouda.mallikarjuna@epa.gov; Affiliation: 1: Pegasus Technical Services, 46 East Hollister Street, Cincinnati, OH 45219, USA 2: United States Environmental Protection Agency, National Risk Management Research Laboratory, 26 W. Martin Luther King Dr., Cincinnati, OH 45268, USA 3: Department of Systems Engineering and Management, Air Force Institute of Technology (AFIT), 2950 Hobson Way, Wright-Patterson Air Force Base, OH 45433, USA 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, 2941 Hobson Way, Wright-Patterson Air Force Base, OH 45433, USA 5: Department of Earth & Environmental Sciences, Wright State University, Dayton, OH 45435, USA; Source Info: Jan2016 Part 1, Vol. 306, p43; Subject Term: NANOCHEMISTRY; Subject Term: TITANIUM dioxide films; Subject Term: ORGANIC compounds -- Environmental aspects; Subject Term: ENVIRONMENTAL remediation; Subject Term: PHOTOCATALYSIS; Subject Term: WASTEWATER treatment; Author-Supplied Keyword: AACVD aerosol-assisted chemical vapor deposition; Author-Supplied Keyword: AES Auger electron spectroscopy; Author-Supplied Keyword: AFM atomic force microscopy; Author-Supplied Keyword: APCVD atmospheric pressure chemical vapor deposition; Author-Supplied Keyword: AS atomic spectroscopy; Author-Supplied Keyword: AuNp gold nanoparticle; Author-Supplied Keyword: CVD chemical vapor deposition; Author-Supplied Keyword: Degradation; Author-Supplied Keyword: DLS dynamic light scattering; Author-Supplied Keyword: Doping; Author-Supplied Keyword: Dr- Blade doctor blade method; Author-Supplied Keyword: DTA differential thermal analysis; Author-Supplied Keyword: EACVD electric field assisted aerosol chemical vapor deposition; Author-Supplied Keyword: EDM electrophoretic deposition method; Author-Supplied Keyword: EDS X-ray energy dispersive spectroscopy; Author-Supplied Keyword: EDX energy dispersive X-ray; Author-Supplied Keyword: EPR electron paramagnetic resonance; Author-Supplied Keyword: ESCA electron spectroscopy for chemical analysis; Author-Supplied Keyword: ESEM environmental scanning electron microscope; Author-Supplied Keyword: FESEM field emission scanning electron microscopy; Author-Supplied Keyword: FTIR Fourier transform infrared spectroscopy; Author-Supplied Keyword: FTO F-doped tin oxide; Author-Supplied Keyword: GIXRD high resolution grazing-incidence X-ray diffraction; Author-Supplied Keyword: HDM hydrothermal method; Author-Supplied Keyword: HOAc acetic acid; Author-Supplied Keyword: HRTEM high resolution transmission microscope; Author-Supplied Keyword: ITO indium tin oxide; Author-Supplied Keyword: LC-MS liquid chromatography mass spectrometry; Author-Supplied Keyword: LEIM low energy ion-implantation; Author-Supplied Keyword: LIMS laser ionization mass spectrometry; Author-Supplied Keyword: MOCVD metal-oxide chemical vapor deposition; Author-Supplied Keyword: Natural solar light; Author-Supplied Keyword: PACVD photo assisted chemical vapor deposition; Author-Supplied Keyword: PCVD plasma chemical vapor deposition; Author-Supplied Keyword: PECVD plasma enhanced chemical vapor deposition; Author-Supplied Keyword: PEG polyethylene glycol; Author-Supplied Keyword: Photocatalysis; Author-Supplied Keyword: PL photoluminescence spectra; Author-Supplied Keyword: PP polypropylene; Author-Supplied Keyword: PV total pore volume; Author-Supplied Keyword: PVA polyvinyl alcohol; Author-Supplied Keyword: RBS Rutherford backscattering; Author-Supplied Keyword: RFPECVD radio frequency plasma enhanced chemical vapor deposition; Author-Supplied Keyword: RMS root mean square; Author-Supplied Keyword: RSS Raman shift spectroscopy; Author-Supplied Keyword: SA surface area; Author-Supplied Keyword: SAED selected area electron diffraction; Author-Supplied Keyword: sccm standard cubic centimeter per minute; Author-Supplied Keyword: SDM Spotter deposition method; Author-Supplied Keyword: SEM scanning electron microscope; Author-Supplied Keyword: SIMS secondary ion mass spectrometry; Author-Supplied Keyword: SM sputtering method; Author-Supplied Keyword: SP spray pyrolysis; Author-Supplied Keyword: TEM transmission electron microscopy; Author-Supplied Keyword: TG thermogravimetric; Author-Supplied Keyword: Thin films; Author-Supplied Keyword: TiO 2 nanoparticles; Author-Supplied Keyword: TiO 2 titanium dioxide; Author-Supplied Keyword: TTIP titanium tetraisopropoxide; Author-Supplied Keyword: UV–vis ultraviolet and visible light; Author-Supplied Keyword: UV-vis-NIR ultraviolet-visible-near infrared; Author-Supplied Keyword: UV/visible light; Author-Supplied Keyword: XPS X-ray photoelectron spectroscopy; Author-Supplied Keyword: XRD X-ray diffraction; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 562910 Remediation Services; NAICS/Industry Codes: 221320 Sewage Treatment Facilities; Number of Pages: 22p; Document Type: Article L3 - 10.1016/j.ccr.2015.06.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110212995&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - SSETT, WILSONBRI T1 - Sympathetic Puritans: Calvinist Fellow-Feeling in Early New England. JO - Early American Literature JF - Early American Literature Y1 - 2016/01// VL - 51 IS - 1 M3 - Book Review SP - 215 EP - 219 PB - University of North Carolina Press SN - 00128163 KW - SYMPATHY KW - NONFICTION KW - VAN Engen, Abram C. KW - SYMPATHETIC Puritans: Calvinist Fellow Feeling in Early New England (Book) N1 - Accession Number: 113491075; SSETT, WILSONBRI 1; Affiliation: 1: United States Air Force Academy; Source Info: 2016, Vol. 51 Issue 1, p215; Subject Term: SYMPATHY; Subject Term: NONFICTION; Reviews & Products: SYMPATHETIC Puritans: Calvinist Fellow Feeling in Early New England (Book); People: VAN Engen, Abram C.; Number of Pages: 5p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113491075&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CHAP ID - 2016-02104-011 AN - 2016-02104-011 AU - Cizek, Gregory J. AU - Earnest, Darin S. ED - Lane, Suzanne ED - Raymond, Mark R. ED - Haladyna, Thomas M. ED - Lane, Suzanne, (Ed) ED - Raymond, Mark R., (Ed) ED - Haladyna, Thomas M., (Ed) T1 - Setting performance standards on tests. T2 - Handbook of test development, 2nd ed. Y1 - 2016/// SP - 212 EP - 237 CY - New York, NY, US PB - Routledge/Taylor & Francis Group SN - 978-0-415-62602-6 SN - 978-0-415-62601-9 SN - 978-0-203-10296-1 N1 - Accession Number: 2016-02104-011. Partial author list: First Author & Affiliation: Cizek, Gregory J.; University of North Carolina-Chapel Hill, Chapel Hill, NC, US. Release Date: 20160602. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 978-0-415-62602-6, Paperback; 978-0-415-62601-9, Hardcover; 978-0-203-10296-1, Digital (undefined format). Language: English. Major Descriptor: Test Construction; Test Standardization. Classification: Tests & Testing (2220). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 26. AB - This chapter provides a basic overview of the theoretical and practical aspects of standard setting and is organized into six sections. The first section introduces the concept and theory of standard setting, answering the question, 'What is standard setting?' The second section discusses the contexts of standard setting, emphasizing its importance. The third section provides an overview of relevant professional standards that apply to standard setting. The fourth section comprises a review of common, foundational elements that are part of nearly all standard-setting procedures, whereas the fifth section provides examples of a few standard-setting procedures. The last section suggests areas for future research. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - performance standards KW - standard setting KW - tests KW - 2016 KW - Test Construction KW - Test Standardization KW - 2016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-02104-011&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2016-08558-018 AN - 2016-08558-018 AU - Pelser, Adam C. AU - Roberts, Robert C. ED - Brosch, Tobias ED - Sander, David ED - Brosch, Tobias, (Ed) ED - Sander, David, (Ed) T1 - Religious value and moral psychology. T2 - Handbook of value: Perspectives from economics, neuroscience, philosophy, psychology and sociology. Y1 - 2016/// SP - 375 EP - 394 CY - New York, NY, US PB - Oxford University Press SN - 978-0-19-871660-0 N1 - Accession Number: 2016-08558-018. Partial author list: First Author & Affiliation: Pelser, Adam C.; Department of Philosophy, United States Air Force Academy, CO, US. Release Date: 20160808. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 978-0-19-871660-0, Hardcover. Language: English. Major Descriptor: Morality; Religious Beliefs; Values. Minor Descriptor: Pragmatics. Classification: Religion (2920); Social Psychology (3000). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). Page Count: 20. AB - We begin, in the first section, by offering an account of the concept. We distinguish two senses of 'religious value' and distinguish religious value from various related concepts, inducing moral value, the pragmatic value of religion, and the epistemic value of religious beliefs. We then turn our attention, in the next section, to a consideration of one recent evolutionary account of the psychological origins of religious values and explore some of the ways religion and religions influence the development of religious values. In the find section, we draw on our discussion of the psychological sources of religious values to argue briefly that any adequate moral psychology ought to encourage the cultivation of religious values and that the natural human religious sensitivities that give rise to religious values can serve as evidence in favor of religious truth. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - religious value KW - moral psychology KW - pragmatic value KW - religious beliefs KW - 2016 KW - Morality KW - Religious Beliefs KW - Values KW - Pragmatics KW - 2016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-08558-018&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - van Dongen, Thijs T.C.F. AU - Idenburg, Floris J. AU - Tan, Edward C.T.H. AU - Rasmussen, Todd E. AU - Hamming, Jaap F. AU - Leenen, Luke P.H. AU - Hoencamp, Rigo T1 - Combat related vascular injuries: Dutch experiences from a role 2 MTF in Afghanistan. JO - Injury JF - Injury Y1 - 2016/01// VL - 47 IS - 1 M3 - journal article SP - 94 EP - 98 SN - 00201383 AB - Background: In a combat environment, major vascular trauma endures as the leading cause of death. The Dutch role 2 Medical Treatment Facility (MTF), provided supportive care during the mission in Uruzgan, Afghanistan. Aim of this study was to conduct detailed analysis of the admitted major haemorrhages (vascular injuries) and to compare our findings with NATO coalition partners.Methods: Retrospective, descriptive study. Participants eligible for this study came from the role 2 MTF admission database, where they fitted the criteria 'Major haemorrhage (class 2 haemorrhage or more according to the ATLS(®) classification) between 2006 and 2010'. Results were contrasted with studies from coalition partners.Results: The query revealed 194 casualties sustaining 208 central (60% abdominal, 40% thoracic/neck), and 99 extremity major haemorrhages leading to 1.6 major haemorrhages per casualty. Survival was significantly better (p<0.05) in the peripheral vascular injuries cohort (96% versus 72%). Primary amputation was needed in 73/84 of lower, and in 8/15 of upper extremity major haemorrhages. Vascular repair or vascular Damage Control Surgery techniques (e.g. shunting) were used in 19/84 cases in the lower, and 7/15 in the upper extremity cohort, with a success rate of 69.2 percent. Amputation rates of coalition partners, using different inclusion and exclusion criteria, ranged from 5 to 60 percent.Conclusions: Only in a few cases genuine peripheral vascular surgery was needed (<1%). This limited number of reconstructions does not demonstrate the need for extensive skills in all areas of vascular surgery. Achieved success rate until discharge was almost 70%. Vascular damage control surgery seems effective as initial limb saving skill in a role 2 MTF. The difference in usage of definitions concerning vascular injuries in current literature warrants further assessment. For optimal analysis there is need for detailed (NATO wide) registration with uniform definitions for vascular injuries.Level Of Evidence: Level IV--Epidemiologic study. [ABSTRACT FROM AUTHOR] AB - Copyright of Injury is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BLOOD-vessels -- Wounds & injuries KW - VASCULAR surgery KW - MEDICAL databases KW - WAR casualties KW - MORTALITY KW - Afghanistan KW - Military KW - Reconstruction KW - Repair KW - Shunt KW - Training KW - Vascular N1 - Accession Number: 111929275; van Dongen, Thijs T.C.F. 1; Email Address: thijsvandongen@ziggo.nl Idenburg, Floris J. 2; Email Address: f.idenburg@mchaaglanden.nl Tan, Edward C.T.H. 3; Email Address: edward.tan@radboudumc.nl Rasmussen, Todd E. 4; Email Address: todd.e.rasmussen.mil@mail.mil Hamming, Jaap F. 5; Email Address: J.F.Hamming@lumc.nl Leenen, Luke P.H. 2; Email Address: l.p.h.leenen@umcutrecht.nl Hoencamp, Rigo 2; Email Address: r.hoencamp@lumc.nl; Affiliation: 1: Department of Trauma, Division of Surgery, University Medical Center Utrecht, Utrecht, The Netherlands 2: The Royal Netherlands Navy (R) and Department of Traumatology, Division of Surgery, Medical Center Haaglanden – Bronovo, The Hague, The Netherlands 3: Royal Netherlands Army and Department of Surgery-Trauma, Division of Surgery, Radboud University Medical Center, Nijmegen, The Netherlands 4: United States Air Force and The Norman M. Rich Department of Surgery, The Uniformed Services University of the Health Science, Bethesda, United States 5: Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands; Source Info: Jan2016, Vol. 47 Issue 1, p94; Subject Term: BLOOD-vessels -- Wounds & injuries; Subject Term: VASCULAR surgery; Subject Term: MEDICAL databases; Subject Term: WAR casualties; Subject Term: MORTALITY; Author-Supplied Keyword: Afghanistan; Author-Supplied Keyword: Military; Author-Supplied Keyword: Reconstruction; Author-Supplied Keyword: Repair; Author-Supplied Keyword: Shunt; Author-Supplied Keyword: Training; Author-Supplied Keyword: Vascular; Number of Pages: 5p; Document Type: journal article L3 - 10.1016/j.injury.2015.08.030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111929275&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 111929275 T1 - Combat related vascular injuries: Dutch experiences from a role 2 MTF in Afghanistan. AU - van Dongen, Thijs T.C.F. AU - Idenburg, Floris J. AU - Tan, Edward C.T.H. AU - Rasmussen, Todd E. AU - Hamming, Jaap F. AU - Leenen, Luke P.H. AU - Hoencamp, Rigo Y1 - 2016/01// N1 - Accession Number: 111929275. Language: English. Entry Date: In Process. Revision Date: 20170104. Publication Type: journal article. Journal Subset: Biomedical; Continental Europe; Europe; Peer Reviewed. Instrumentation: Wide Range Achievement Test (WRAT); Center for Epidemiologic Studies Depression Scale (CES-D). NLM UID: 0226040. KW - Military Medicine KW - Amputation -- Statistics and Numerical Data KW - Military Personnel KW - Blood Vessels -- Injuries KW - Blast Injuries -- Surgery KW - Blast Injuries -- Mortality KW - Trauma Severity Indices KW - Netherlands KW - Blast Injuries -- Diagnosis KW - Retrospective Design KW - Afghanistan KW - Multiple Trauma KW - Hospitals, Military KW - Center for Epidemiological Studies Depression Scale SP - 94 EP - 98 JO - Injury JF - Injury JA - INJURY VL - 47 IS - 1 CY - New York, New York PB - Elsevier Science AB - Background: In a combat environment, major vascular trauma endures as the leading cause of death. The Dutch role 2 Medical Treatment Facility (MTF), provided supportive care during the mission in Uruzgan, Afghanistan. Aim of this study was to conduct detailed analysis of the admitted major haemorrhages (vascular injuries) and to compare our findings with NATO coalition partners.Methods: Retrospective, descriptive study. Participants eligible for this study came from the role 2 MTF admission database, where they fitted the criteria 'Major haemorrhage (class 2 haemorrhage or more according to the ATLS(®) classification) between 2006 and 2010'. Results were contrasted with studies from coalition partners.Results: The query revealed 194 casualties sustaining 208 central (60% abdominal, 40% thoracic/neck), and 99 extremity major haemorrhages leading to 1.6 major haemorrhages per casualty. Survival was significantly better (p<0.05) in the peripheral vascular injuries cohort (96% versus 72%). Primary amputation was needed in 73/84 of lower, and in 8/15 of upper extremity major haemorrhages. Vascular repair or vascular Damage Control Surgery techniques (e.g. shunting) were used in 19/84 cases in the lower, and 7/15 in the upper extremity cohort, with a success rate of 69.2 percent. Amputation rates of coalition partners, using different inclusion and exclusion criteria, ranged from 5 to 60 percent.Conclusions: Only in a few cases genuine peripheral vascular surgery was needed (<1%). This limited number of reconstructions does not demonstrate the need for extensive skills in all areas of vascular surgery. Achieved success rate until discharge was almost 70%. Vascular damage control surgery seems effective as initial limb saving skill in a role 2 MTF. The difference in usage of definitions concerning vascular injuries in current literature warrants further assessment. For optimal analysis there is need for detailed (NATO wide) registration with uniform definitions for vascular injuries.Level Of Evidence: Level IV--Epidemiologic study. SN - 0020-1383 AD - Department of Trauma, Division of Surgery, University Medical Center Utrecht, Utrecht, The Netherlands AD - The Royal Netherlands Navy (R) and Department of Traumatology, Division of Surgery, Medical Center Haaglanden – Bronovo, The Hague, The Netherlands AD - Royal Netherlands Army and Department of Surgery-Trauma, Division of Surgery, Radboud University Medical Center, Nijmegen, The Netherlands AD - United States Air Force and The Norman M. Rich Department of Surgery, The Uniformed Services University of the Health Science, Bethesda, United States AD - Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands U2 - PMID: 26358515. DO - 10.1016/j.injury.2015.08.030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=111929275&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Boakye, Emmanuel E. AU - Mogilevsky, Pavel AU - Keller, Kristin A. AU - Lee, HeeDong AU - Godar, Trenton AU - Hay, Randall S. T1 - Processing of 0.7BaTiO3-0.3BiScO3 Solid-Solution Coatings. JO - International Journal of Applied Ceramic Technology JF - International Journal of Applied Ceramic Technology Y1 - 2016/01//Jan/Feb2016 VL - 13 IS - 1 M3 - Article SP - 140 EP - 151 SN - 1546542X AB - Coatings with the 0.7BaTiO3-0.3BiScO3 solid-solution composition were formed on palladium and single-crystal (001) SrTiO3 substrates using a polymeric metal citrate precursor. Solutions of Ti OCl2, Ba( NO3)2, Sc( NO3)3, and Bi( NO3)3 were mixed with citric acid and polymerized with ethylene glycol. Stable mixed-metal citrate solutions were formed at pH > 9 and used for coatings. The phase and composition of powders and coatings were characterized using DTA, TGA, SEM, TEM, and X-ray diffraction. Single-phase cubic 0.7BaTiO3-0.3BiScO3 solid solutions formed at 600°C. Coatings on Pd using precursors doped with 5 wt% lithium nitrate were dense after sintering at 950°C/1 h. Coatings without lithium nitrate required 1050°C/50 h to densify. Coatings on SrTiO3 heat-treated at 1150°C were dense but formed a (Sc,Ti)-rich second phase. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Applied Ceramic Technology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BARIUM titanate KW - BISMUTH compounds KW - SOLID solutions KW - METAL coating KW - CHEMICAL processes KW - SINGLE crystals N1 - Accession Number: 112212596; Boakye, Emmanuel E. 1,2 Mogilevsky, Pavel 1,2 Keller, Kristin A. 1,2 Lee, HeeDong 1,2 Godar, Trenton 1,3 Hay, Randall S. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory 2: UES Inc. 3: Wright State University; Source Info: Jan/Feb2016, Vol. 13 Issue 1, p140; Subject Term: BARIUM titanate; Subject Term: BISMUTH compounds; Subject Term: SOLID solutions; Subject Term: METAL coating; Subject Term: CHEMICAL processes; Subject Term: SINGLE crystals; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 12p; Document Type: Article L3 - 10.1111/ijac.12414 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112212596&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR T1 - Relationships among Movement Reinvestment, Decision-Making Reinvestment, and Perceived Choking. AU - Takehiro Iwatsuki AU - Wright, Perry JO - International Journal of Coaching Science JF - International Journal of Coaching Science Y1 - 2016/01// VL - 10 IS - 1 SP - 25 EP - 35 SN - 19758286 N1 - Accession Number: 112950380; Author: Takehiro Iwatsuki: 1 email: takehiro.iwatsuki@unlv.edu. Author: Wright, Perry: 2 ; Author Affiliation: 1 University of Nevada, Las Vegas, U.S.A: 2 United States Air Force Academy, U.S.A; No. of Pages: 11; Language: English; Publication Type: Article; Update Code: 20160215 N2 - The purpose of this research was to examine the relationships among movement reinvestment, decision-making reinvestment, and perception of choking under pressure with individual and team sport athletes. Participants were 84 male varsity collegiate athletes on tennis, squash, soccer, volleyball, and basketball teams from the NCAA Division III in the United States. Participants completed the Movement Specific Reinvestment Scale (MSRS; Masters, Evans, & Maxwell, 2005), the Decision Specific Reinvestment Scale (DSRS; Kinrade, Jackson, Ashford, & Bishop, 2010a), and perception of choking under pressure. Results indicated that movement self-consciousness predicted athletes' perception of choking under pressure. Results of MANOVA revealed that individual sport athletes had higher perception of choking under pressure than team sport athletes. Movement reinvestment and decision-making reinvestment may serve an important role in the choking under pressure process. ABSTRACT FROM AUTHOR KW - *BODY movement KW - *DECISION making KW - *COLLEGE athletes KW - *PERCEPTION KW - *SPORTS psychology KW - choking under pressure KW - collegiate athletes KW - psychology KW - self-focus UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=112950380&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Hanchak, Michael S. AU - Vangsness, Marlin D. AU - Ervin, Jamie S. AU - Byrd, Larry W. T1 - Model and experiments of the transient evolution of a thin, evaporating liquid film. JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2016/01// VL - 92 M3 - Article SP - 757 EP - 765 SN - 00179310 AB - Experimental thickness profiles of evaporating thin films of n-octane and n-heptane on silicon were recorded using reflectometry. These films ranged from approximately ten nanometers thick in the adsorbed region to several micrometers thick in the meniscus region. For steady-state measurements, the reflectometer was traversed along the film to give thickness versus horizontal distance. For transient measurements, the reflectometer was fixed at several points as thickness was measured over time. While film thickness and substrate temperature measurements are practical, those of the evaporative flux profile and total heat transfer are not. Hence, a numerical model was formulated based on transient lubrication theory and modified to include kinetic evaporation and disjoining pressure. The model uses an ordinary differential equation solver to advance the governing equations in time with staggered finite differences for the spatial derivatives. Good correlation of the transient film thickness was achieved between the simulations and experiments. Thus, we have confidence in the inferred evaporative flux profiles and liquid–vapor interface temperatures. With this information, instantaneous heat transfer coefficients were derived for the entirety of the thin film region. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID films KW - THICKNESS measurement KW - PHYSICS experiments KW - HEPTANE KW - REFLECTOMETRY KW - Disjoining pressure KW - Kinetic evaporation KW - Lubrication theory KW - Reflectometry KW - Thin film KW - Transient N1 - Accession Number: 110512028; Hanchak, Michael S. 1; Email Address: michael.hanchak.ctr@wpafb.af.mil Vangsness, Marlin D. 1 Ervin, Jamie S. 1 Byrd, Larry W. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469, USA 2: Air Force Research Laboratory, WPAFB, OH 45433, USA; Source Info: Jan2016, Vol. 92, p757; Subject Term: LIQUID films; Subject Term: THICKNESS measurement; Subject Term: PHYSICS experiments; Subject Term: HEPTANE; Subject Term: REFLECTOMETRY; Author-Supplied Keyword: Disjoining pressure; Author-Supplied Keyword: Kinetic evaporation; Author-Supplied Keyword: Lubrication theory; Author-Supplied Keyword: Reflectometry; Author-Supplied Keyword: Thin film; Author-Supplied Keyword: Transient; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2015.09.051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110512028&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ricciardi, Anthony P. AU - Canfield, Robert A. AU - Patil, Mayuresh J. AU - Lindsley, Ned T1 - Nonlinear Aeroelastic Scaled-Model Design. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2016/01// VL - 53 IS - 1 M3 - Article SP - 20 EP - 32 SN - 00218669 AB - A systematic approach for aeroelastic scaled-model design is developed. The method optimizes an incremental number of vibration eigenpairs, buckling eigenpairs, and optionally a linear static response of scaled models to match the scaled values of a target full-scale aircraft. A method for matching scaled modal mass, a required scaling parameter, is developed. The sources of local optima are identified and a tiered global-search-optimization procedure is incorporated. The approach is demonstrated on a joined-wing scaled-model-design problem. Costly nonlinear analysis is omitted from the evaluation of the objective function and constraints for optimization. The results produced scaled models that closely replicate the geometrically nonlinear target aeroelastic behavior. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - NONLINEAR systems KW - ENGINEERING design KW - VIBRATION (Mechanics) KW - MATHEMATICAL optimization N1 - Accession Number: 113855166; Ricciardi, Anthony P. 1 Canfield, Robert A. 1 Patil, Mayuresh J. 1 Lindsley, Ned 2; Affiliation: 1: Department of Aerospace and Ocean Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jan2016, Vol. 53 Issue 1, p20; Subject Term: AEROELASTICITY; Subject Term: NONLINEAR systems; Subject Term: ENGINEERING design; Subject Term: VIBRATION (Mechanics); Subject Term: MATHEMATICAL optimization; NAICS/Industry Codes: 541330 Engineering Services; Number of Pages: 13p; Document Type: Article L3 - 10.2514/1.C033171 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113855166&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gabbard, Mark D. AU - Lindsley, Ned J. AU - Kunz, Donald L. T1 - Modeling the Effects of Underwing Missile Canards on F-16 Limit Cycle Oscillations. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2016/01// VL - 53 IS - 1 M3 - Article SP - 202 EP - 216 SN - 00218669 AB - This research evaluated various methods using ZONA's Euler Unsteady Aerodynamic Solver against flight tests previously flown at USAF Test Pilot School, using underwing air-to-air missiles with removable canards, which allows the aerodynamics of the store configuration to be changed while maintaining identical mass properties. ZONA's Euler Unsteady Aerodynamic Solver was employed with various linear flutter and nonlinear time-domain analyses. ZONA's Euler Unsteady Aerodynamic Solver correctly predicted that removing the canards would delay limit cycle oscillation onset. However, all of the methods generally predicted onset earlier than flight test. Consistent with the results found by previous researchers, the nonlinear simulation still predicted divergent classical flutter rather than limit cycle oscillation until nonlinear structural damping was added and tuned to produce limit cycle oscillation. Without known structural damping characteristics, the nonlinear structural damping model needed to be arbitrarily tuned to match flight-test data. This research demonstrated a different tuning method from that had been used by previous researchers. Nonlinear structural damping plays an important role in limit cycle oscillation, but a better understanding of the actual nonlinear aerodynamic and structural effects is needed before reliable limit cycle oscillation predictions can be made for all configurations and throughout the flight envelope. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIMIT cycles KW - UNSTEADY flow (Aerodynamics) KW - OSCILLATIONS KW - EULER force KW - FLIGHT testing N1 - Accession Number: 113855180; Gabbard, Mark D. 1 Lindsley, Ned J. 1 Kunz, Donald L. 2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Department of Aeronautics & Astronautics, U.S. Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jan2016, Vol. 53 Issue 1, p202; Subject Term: LIMIT cycles; Subject Term: UNSTEADY flow (Aerodynamics); Subject Term: OSCILLATIONS; Subject Term: EULER force; Subject Term: FLIGHT testing; Number of Pages: 15p; Document Type: Article L3 - 10.2514/1.C033301 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113855180&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schmidt, Morgan S. AU - Kennedy, Paul K. AU - Noojin, Gary D. AU - Thomas, Robert J. AU - Rockwell, Benjamin A. T1 - Temperature dependence of nanosecond laser pulse thresholds of melanosome and microsphere microcavitation. JO - Journal of Biomedical Optics JF - Journal of Biomedical Optics Y1 - 2016/01// VL - 21 IS - 1 M3 - Article SP - 1 EP - 8 SN - 10833668 AB - Melanosome microcavitation is the threshold-level retinal pigment epithelium (RPE) damage mechanism for nanosecond (ns) pulse exposures in the visible and near-infrared (NIR). Thresholds for microcavitation of isolated bovine RPE melanosomes were determined as a function of temperature (20 to 85°C) using single ns laser pulses at 532 and 1064 nm. Melanosomes were irradiated using a 1064-nm Q-switched Nd:YAG (doubled for 532-nm irradiation). For comparison to melanosome data, a similar temperature (20 to 65°C) dependence study was also performed for 532 nm, ns pulse exposures of black polystyrene microbeads. Results indicated a decrease in the microcavitation average radiant exposure threshold with increasing sample temperature for both 532- and 1064-nm single pulse exposures of melanosomes and microbeads. Threshold data and extrapolated nucleation temperatures were used to estimate melanosome absorption coefficients in the visible and NIR, and microbead absorption coefficients in the visible, indicating that melanin is a better absorber of visible light than black polystyrene. The NIR melanosome absorption coefficients ranged from 3713 cm-1 at 800 nm to 222 cm-1 at 1319 nm. These data represent the first temperature-dependent melanosome microcavitation study in the NIR and provide additional information for understanding melanosome microcavitation threshold dependence on wavelength and ambient temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Biomedical Optics is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TEMPERATURE KW - LASER pulses KW - EPITHELIUM KW - CAVITATION KW - NEAR infrared radiation KW - POLYSTYRENE KW - EXPOSURE dose KW - damage threshold KW - melanosome KW - microcavitation KW - temperature dependence N1 - Accession Number: 112961457; Schmidt, Morgan S. 1; Email Address: morgan.schmidt.ctr@us.af.mil Kennedy, Paul K. 1 Noojin, Gary D. 2 Thomas, Robert J. 1 Rockwell, Benjamin A. 1; Affiliation: 1: Air Force Research Laboratory, Human Effectiveness Directorate, Bioeffects Division, Optical Radiation Bioeffects Branch, 711th Human Performance Wing, 4141 Petroleum Road, JBSA, Fort Sam Houston, Texas 78234, United States 2: Engility Corporation, 4141 Petroleum Road, JBSA, Fort Sam Houston, Texas 78234, United States; Source Info: Jan2016, Vol. 21 Issue 1, p1; Subject Term: TEMPERATURE; Subject Term: LASER pulses; Subject Term: EPITHELIUM; Subject Term: CAVITATION; Subject Term: NEAR infrared radiation; Subject Term: POLYSTYRENE; Subject Term: EXPOSURE dose; Author-Supplied Keyword: damage threshold; Author-Supplied Keyword: melanosome; Author-Supplied Keyword: microcavitation; Author-Supplied Keyword: temperature dependence; NAICS/Industry Codes: 326140 Polystyrene Foam Product Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1117/1.JBO.21.1.015013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112961457&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Terry, Nathan B. AU - Kontur, Frederick J. AU - de La Harpe, Kimberly T1 - The Development of a Learning Gap Between Students With Strong Prerequisite Skills and Students With Weak Prerequisite Skills. JO - Journal of College Science Teaching JF - Journal of College Science Teaching Y1 - 2016/01//Jan/Feb2016 VL - 45 IS - 3 M3 - Article SP - 34 EP - 40 SN - 0047231X AB - This article investigates how mastery of prerequisite course material impacts student learning in follow-on courses. To measure the importance of prerequisite skills, we compare the exam scores of students with a GPA of 3.0 or better in their multidisciplinary prerequisite classes to the exam scores of students with a GPA of less than 3.0 in their interdisciplinary prerequisite courses. As the semester progresses, the learning gap between the well-prepared and the poorly prepared students steadily increases, a finding that is robust over 14 semesters and dozens of different instructors. Comparing these two groups using standardized subject exam scores yields the same conclusion, as do comparisons of the relative exam scores between honors and traditional sections of the course. The learning gap disappears when we group students by their mastery of prior coursework in nonrelated disciplines, showing that prerequisite skills, rather than some generalized idea of intelligence, is critical to subsequent learning. Finally, we consider ways in which academic advising and prerequisite course grade requirements might be structured to better serve our poorly prepared students. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of College Science Teaching is the property of National Science Teachers Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PREREQUISITES (Education) KW - ACADEMIC ability KW - INTELLECTUAL development KW - LEARNING ability KW - INTERDISCIPLINARY research N1 - Accession Number: 111934352; Terry, Nathan B. 1 Kontur, Frederick J. 1 de La Harpe, Kimberly 2; Affiliation: 1: Former assistant professor, Physics Department United States Air Force Academy in Colorado Springs, Colorado 2: Assistant professor, Physics Department United States Air Force Academy in Colorado Springs, Colorado; Source Info: Jan/Feb2016, Vol. 45 Issue 3, p34; Subject Term: PREREQUISITES (Education); Subject Term: ACADEMIC ability; Subject Term: INTELLECTUAL development; Subject Term: LEARNING ability; Subject Term: INTERDISCIPLINARY research; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111934352&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Montgomery, Noel D. AU - Lancaster, Jack L. T1 - Finite difference model of a four-electrode conductivity measurement system. JO - Journal of Electrical Bioimpedance JF - Journal of Electrical Bioimpedance Y1 - 2016/01// VL - 7 IS - 1 M3 - Article SP - 6 EP - 12 SN - 18915469 AB - A finite difference model of a four-electrode tissue conductivity measurement system was developed and shown to be within 10% of theory. The model is useful for explaining the behavior of conductivity measurement electrodes in tissue. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Electrical Bioimpedance is the property of University of Oslo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FINITE difference method KW - ELECTRICAL conductivity measurement KW - ELECTRODES KW - ELECTRIC currents KW - ELECTRIC potential KW - Conductivity measurement KW - current KW - electrodes KW - voltage N1 - Accession Number: 120741859; Montgomery, Noel D. 1,2; Email Address: noel.montgomery@yahoo.com Lancaster, Jack L. 3; Affiliation: 1: Air Force Research Laboratory, Bioeffects Division, Fort Sam Houston, TX 2: Joint UTSA/UTHSCSA Biomedical Engineering Program, San Antonio, TX 3: Research Imaging Institute, University of Texas Health Science Center at San Antonio, San Antonio, TX; Source Info: 2016, Vol. 7 Issue 1, p6; Subject Term: FINITE difference method; Subject Term: ELECTRICAL conductivity measurement; Subject Term: ELECTRODES; Subject Term: ELECTRIC currents; Subject Term: ELECTRIC potential; Author-Supplied Keyword: Conductivity measurement; Author-Supplied Keyword: current; Author-Supplied Keyword: electrodes; Author-Supplied Keyword: voltage; Number of Pages: 7p; Document Type: Article L3 - 10.5617/jeb.2641 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120741859&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Voss, Jameson D. AU - Kugblenu, Richard AU - Salter, Khabira AU - Johnson, Lucas AU - Reeves, Will K. T1 - Case series of 23 deaths from Hymenoptera stings among United States Air Force populations. JO - Journal of Hymenoptera Research JF - Journal of Hymenoptera Research Y1 - 2016/01// IS - 48 M3 - Article SP - 95 EP - 99 SN - 10709428 AB - Medical conditions arising from hymenopteran sting allergy or mass envenomation are a serious health concern, particularly in austere environments. Both practicing allergists and entomological pest control personnel should consider the relevance of stinging insects when responding to problems with Hymenoptera. Recent occupational reviews of civilian deaths from insect bites and stings prompted our review of the US Air Force Mortality Registry to determine the relevance of insect stings and bites as a cause of death in the US Air Force. After reviewing over 40 years of death records we identified 23 death records, among US Air Force Active duty, guard, or retirees that arose directly from hymenopteran stings. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Hymenoptera Research is the property of Pensoft Publishers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INSECT bites & stings KW - RESEARCH KW - HYMENOPTERA KW - INSECT allergy KW - DEATH -- Causes KW - STATISTICS KW - AIRMEN KW - MEDICAL care KW - UNITED States. Air Force KW - Air Force Mortality Registry KW - bees KW - Hymenoptera KW - military KW - mortality KW - stings KW - wasps N1 - Accession Number: 114124192; Voss, Jameson D. 1 Kugblenu, Richard 2 Salter, Khabira 3 Johnson, Lucas 4 Reeves, Will K. 1,5; Email Address: will.reeves@us.af.mil; Affiliation: 1: United States Air Force School of Aerospace Medicine, PHR, 2510 5th Street, Wright-Patterson AFB, OH 45433, USA 2: Oak Ridge Institute for Science and Education, Wright-Patterson AFB, OH 45433, USA 3: Decypher, Wright-Patterson AFB, OH 45433, USA 4: Uniformed Services University of the Health Sciences, Department of Preventive Medicine and Biometrics, Washington D.C. 20814, USA 5: 2510 Fifth Street, Building 840, Wright-Patterson AFB, OH 45433, USA; Source Info: 2016, Issue 48, p95; Subject Term: INSECT bites & stings; Subject Term: RESEARCH; Subject Term: HYMENOPTERA; Subject Term: INSECT allergy; Subject Term: DEATH -- Causes; Subject Term: STATISTICS; Subject Term: AIRMEN; Subject Term: MEDICAL care; Subject Term: UNITED States. Air Force; Author-Supplied Keyword: Air Force Mortality Registry; Author-Supplied Keyword: bees; Author-Supplied Keyword: Hymenoptera; Author-Supplied Keyword: military; Author-Supplied Keyword: mortality; Author-Supplied Keyword: stings; Author-Supplied Keyword: wasps; Number of Pages: 5p; Document Type: Article L3 - 10.3897/JHR.48.7905 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114124192&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wooten, Dennis C. AU - Starr, Clarise R. AU - Lyon, Wanda J. T1 - A plasmid containing the human metallothionein II gene can function as an antibody-assisted electrophoretic biosensor for heavy metals. JO - Journal of Immunotoxicology JF - Journal of Immunotoxicology Y1 - 2016/01// VL - 13 IS - 1 M3 - Article SP - 55 EP - 63 SN - 1547691X AB - Different forms of heavy metals affect biochemical systems in characteristic ways that cannot be detected with typical metal analysis methods like atomic absorption spectrometry. Further, using living systems to analyze interaction of heavy metals with biochemical systems can be laborious and unreliable. To generate a reliable easy-to-use biologically-based biosensor system, the entire human metallothionein-II (MT-II) gene was incorporated into a plasmid (pUC57-MT) easily replicated inEscherichia coli. In this system, a commercial polyclonal antibody raised against human metal-responsive transcription factor-1 protein (MTF-1 protein) could modify the electrophoretic migration patterns (i.e. cause specific decreases in agarose gel electrophoretic mobility) of the plasmid in the presence or absence of heavy metals other than zinc (Zn). In the study here, heavy metals, MTF-1 protein, and polyclonal anti-MTF-1 antibody were used to assess pUC57-MT plasmid antibody-assisted electrophoretic mobility. Anti-MTF-1 antibody bound both MTF-1 protein and pUC57-MT plasmid in a non-competitive fashion such that it could be used to differentiate specific heavy metal binding. The results showed that antibody-inhibited plasmid migration was heavy metal level-dependent. Zinc caused a unique mobility shift pattern opposite to that of other metals tested, i.e. Zn blocked the antibody ability to inhibit plasmid migration, despite a greatly increased affinity for DNA by the antibody when Zn was present. The Zn effect was reversed/modified by adding MTF-1 protein. Additionally, antibody inhibition of plasmid mobility was resistant to heat pre-treatment and trypsinization, indicating absence of residual DNA extraction-resistant bacterial DNA binding proteins. DNA binding by anti-DNA antibodies may be commonly enhanced by xenobiotic heavy metals and elevated levels of Zn, thus making them potentially effective tools for assessment of heavy metal bioavailability in aqueous solutions and fluid obtained from metal implant sites. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Immunotoxicology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Plasmids KW - Metallothionein KW - Biosensors KW - Immunoglobulins KW - Atomic absorption spectroscopy KW - Heavy metals -- Analysis KW - Anti-DNA KW - anti-MTF-1 KW - metal KW - metallothionein KW - MRE KW - MTF-1 KW - plasmid KW - xenobiotic N1 - Accession Number: 110590376; Wooten, Dennis C. 1; Starr, Clarise R. 1; Lyon, Wanda J. 1; Affiliations: 1: United States Air Force School of Aerospace Medicine, Advanced Technology and Genetics Center, Wright-Patterson Air Force Base, OH, USA; Issue Info: Jan2016, Vol. 13 Issue 1, p55; Subject Term: Plasmids; Subject Term: Metallothionein; Subject Term: Biosensors; Subject Term: Immunoglobulins; Subject Term: Atomic absorption spectroscopy; Subject Term: Heavy metals -- Analysis; Author-Supplied Keyword: Anti-DNA; Author-Supplied Keyword: anti-MTF-1; Author-Supplied Keyword: metal; Author-Supplied Keyword: metallothionein; Author-Supplied Keyword: MRE; Author-Supplied Keyword: MTF-1; Author-Supplied Keyword: plasmid; Author-Supplied Keyword: xenobiotic; Number of Pages: 9p; Document Type: Article L3 - 10.3109/1547691X.2014.999295 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=110590376&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Kumar, Jitendra AU - Kichambare, Padmakar AU - Rai, Amarendra K. AU - Bhattacharya, Rabi AU - Rodrigues, Stanley AU - Subramanyam, Guru T1 - A high performance ceramic-polymer separator for lithium batteries. JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2016/01// VL - 301 M3 - Article SP - 194 EP - 198 SN - 03787753 AB - A three-layered (ceramic-polymer-ceramic) hybrid separator was prepared by coating ceramic electrolyte [lithium aluminum germanium phosphate (LAGP)] over both sides of polyethylene (PE) polymer membrane using electron beam physical vapor deposition (EB-PVD) technique. Ionic conductivities of membranes were evaluated after soaking PE and LAGP/PE/LAGP membranes in a 1 Molar (1M) lithium hexafluroarsenate (LiAsF 6 ) electrolyte in ethylene carbonate (EC), dimethyl carbonate (DMC) and ethylmethyl carbonate (EMC) in volume ratio (1:1:1). Scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques were employed to evaluate morphology and structure of the separators before and after cycling performance tests to better understand structure-property correlation. As compared to regular PE separator, LAGP/PE/LAGP hybrid separator showed: (i) higher liquid electrolyte uptake, (ii) higher ionic conductivity, (iii) lower interfacial resistance with lithium and (iv) lower cell voltage polarization during lithium cycling at high current density of 1.3 mA cm −2 at room temperature. The enhanced performance is attributed to higher liquid uptake, LAGP-assisted faster ion conduction and dendrite prevention. Optimization of density and thickness of LAGP layer on PE or other membranes through manipulation of PVD deposition parameters will enable practical applications of this novel hybrid separator in rechargeable lithium batteries with high energy, high power, longer cycle life, and higher safety level. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CERAMIC coating KW - LITHIUM cells KW - POLYMERIC membranes KW - ELECTROLYTES KW - LITHIUM compounds KW - COMPLEX compounds KW - POLYETHYLENE KW - Ceramic/polymer/ceramic hybrid separator KW - Charge-transfer resistance KW - Dendrite proof separator KW - Lithium batteries KW - Lithium plating/stripping KW - Voltage polarization N1 - Accession Number: 110657662; Kumar, Jitendra 1; Email Address: jitendra.kumar@udri.udayton.edu Kichambare, Padmakar 2 Rai, Amarendra K. 3 Bhattacharya, Rabi 3 Rodrigues, Stanley 2 Subramanyam, Guru 4; Affiliation: 1: Electrochemical Energy Systems Laboratory, ETM Division, University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0171, USA 2: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson Air Force Base, OH 45433-7252, USA 3: UES, Inc. 4401 Dayton-Xenia Road, Dayton, OH 45432-1894, USA 4: Electrical and Computer Engineering, University of Dayton, 300 College Park, Dayton, OH 45469-0232, USA; Source Info: Jan2016, Vol. 301, p194; Subject Term: CERAMIC coating; Subject Term: LITHIUM cells; Subject Term: POLYMERIC membranes; Subject Term: ELECTROLYTES; Subject Term: LITHIUM compounds; Subject Term: COMPLEX compounds; Subject Term: POLYETHYLENE; Author-Supplied Keyword: Ceramic/polymer/ceramic hybrid separator; Author-Supplied Keyword: Charge-transfer resistance; Author-Supplied Keyword: Dendrite proof separator; Author-Supplied Keyword: Lithium batteries; Author-Supplied Keyword: Lithium plating/stripping; Author-Supplied Keyword: Voltage polarization; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jpowsour.2015.09.117 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110657662&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bateman, Aaron T1 - The KGB and Its Enduring Legacy. JO - Journal of Slavic Military Studies JF - Journal of Slavic Military Studies Y1 - 2016/01//Jan-Mar2016 VL - 29 IS - 1 M3 - Article SP - 23 EP - 47 SN - 13518046 AB - The creation of theFederal’naia Sluzhba Bezopasnostiin 1995 represented the eighth time that the Russian secret police underwent an organizational transformation since the contemporary service was created in the form of the Cheka in 1917. The post-Soviet Russian security services have been shaped by the early Soviet secret police’s identity as a domestic security service protecting the Bolshevik Party. After the USSR collapsed, the KGB did not die; its power increased to a level not seen since the Andropov era. The FSB is the most direct successor to the KGB’s domestic apparatus and functions as both an intelligence agency and the extrajudicial political police of the Russian Government. The FSB has become the dominant security institution in Russia, which is emblematic of the Russian state’s continuing and historical obsession with domestic security and the use of extrajudicial force to maintain political stability. [ABSTRACT FROM PUBLISHER] AB - Copyright of Journal of Slavic Military Studies is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOVIET Union -- History KW - INTELLIGENCE service -- Russia KW - POLITICAL stability KW - SOVIET Union. Komitet gosudarstvennoi bezopasnosti KW - FEDERALNAIA sluzhba bezopasnosti Rossii N1 - Accession Number: 113082776; Bateman, Aaron 1; Affiliations: 1 : United States Air Force; Source Info: Jan-Mar2016, Vol. 29 Issue 1, p23; Historical Period: 901 to 2012; Subject Term: SOVIET Union -- History; Subject Term: INTELLIGENCE service -- Russia; Subject Term: POLITICAL stability; Number of Pages: 25p; Document Type: Article L3 - 10.1080/13518046.2016.1129863 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hia&AN=113082776&site=ehost-live&scope=site DP - EBSCOhost DB - hia ER - TY - JOUR AU - Wissink, Andrew M. AU - Potsdam, Mark AU - Venkateswaran Sankaran AU - Jayanarayanan Sitaraman AU - Mavriplis, Dimitri T1 - A Dual-Mesh Unstructured Adaptive Cartesian Computational Fluid Dynamics Approach for Hover Prediction. JO - Journal of the American Helicopter Society JF - Journal of the American Helicopter Society Y1 - 2016/01// VL - 61 IS - 1 M3 - Article SP - 012004-1 EP - 012004-19 PB - American Helicopter Society SN - 00028711 AB - A dual-mesh overset computational fluid dynamics (CFD) approach is employed to predict the aerodynamic performance of hovering rotors. Two different CFD solvers are applied in different parts of the computational domain: a body-fitted unstructured solver near the blade surface to capture complex geometry and viscous boundary layer and a high-order block-structured Cartesian solver away from the blade to capture the wake. The Cartesian solver applies adaptive mesh refinement (AMR) to resolve tip vortices. Results are demonstrated for calculations of the Tilt Rotor Aero-acoustics Model (TRAM) isolated rotor. The results show that the dual-mesh scheme is able to compute aerodynamic figure of merit performance to within the experimental error bounds with appropriate mesh resolution. Solution-driven AMR is found to be effective for resolving the vortex wake in an automated manner at significantly less computational cost compared to fixed-grid calculations with the same resolution. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Helicopter Society is the property of American Helicopter Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTATIONAL fluid dynamics KW - AERODYNAMICS KW - ROTORS (Helicopters) KW - NAVIER-Stokes equations KW - COMPUTER-aided design -- Software N1 - Accession Number: 116161439; Wissink, Andrew M. 1; Email Address: andrew.m.wissink.civ@mail.mil Potsdam, Mark 1 Venkateswaran Sankaran 2 Jayanarayanan Sitaraman 3 Mavriplis, Dimitri 3; Affiliation: 1: Aerospace Engineer, U.S. Army Aerodynamics Development Directorate (AMRDEC), Ames Research Center, Moffett Field, CA 2: Senior Scientist, Air Force Research Laboratory, Edwards Air Force Base, CA 3: Department of Mechanical Engineering, University of Wyoming, Laramie, WY; Source Info: Jan2016, Vol. 61 Issue 1, p012004-1; Subject Term: COMPUTATIONAL fluid dynamics; Subject Term: AERODYNAMICS; Subject Term: ROTORS (Helicopters); Subject Term: NAVIER-Stokes equations; Subject Term: COMPUTER-aided design -- Software; NAICS/Industry Codes: 541512 Computer Systems Design Services; Number of Pages: 19p; Document Type: Article L3 - 10.4050/JAHS.61.012004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116161439&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tugce Ozturk AU - Clayton Stein AU - Reeju Pokharel AU - Christopher Hefferan AU - Harris Tucker AU - Sushant Jha AU - Reji John AU - Ricardo A Lebensohn AU - Peter Kenesei AU - Robert M Suter AU - Anthony D Rollett T1 - Simulation domain size requirements for elastic response of 3D polycrystalline materials. JO - Modelling & Simulation in Materials Science & Engineering JF - Modelling & Simulation in Materials Science & Engineering Y1 - 2016/01// VL - 24 IS - 1 M3 - Article SP - 1 EP - 1 SN - 09650393 AB - A fast Fourier transform (FFT) based spectral algorithm is used to compute the full field mechanical response of polycrystalline microstructures. The field distributions in a specific region are used to determine the sensitivity of the method to the number of surrounding grains through quantification of the divergence of the field values from the largest simulation domain, as successively smaller surrounding volumes are included in the simulation. The analysis considers a mapped 3D structure where the location of interest is taken to be a particular pair of surface grains that enclose a small fatigue crack, and synthetically created statistically representative microstructures to further investigate the effect of anisotropy, loading condition, loading direction, and texture. The synthetic structures are generated via DREAM3D and the measured material is a cyclically loaded, Ni-based, low solvus high refractory (LSHR) superalloy that was characterized via 3D high energy x-ray diffraction microscopy (HEDM). Point-wise comparison of distributions in the grain pairs shows that, in order to obtain a Pearson correlation coefficient larger than 99%, the domain must extend to at least the third nearest neighbor. For an elastic FFT calculation, the stress–strain distributions are not sensitive to the shape of the domain. The main result is that convergence can be specified in terms of the number of grains surrounding a region of interest. [ABSTRACT FROM AUTHOR] AB - Copyright of Modelling & Simulation in Materials Science & Engineering is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELASTICITY KW - POLYCRYSTALS KW - FAST Fourier transforms KW - MICROSTRUCTURE KW - SIMULATION methods & models N1 - Accession Number: 111649222; Tugce Ozturk 1; Email Address: tozturk@andrew.cmu.edu Clayton Stein 1 Reeju Pokharel 1,2 Christopher Hefferan 3,4 Harris Tucker 1 Sushant Jha 5 Reji John 6 Ricardo A Lebensohn 2 Peter Kenesei 7 Robert M Suter 3 Anthony D Rollett 1; Affiliation: 1: Carnegie Mellon University, Department of Materials Science and Engineering, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA 2: Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87544, USA 3: Carnegie Mellon University, Department of Physics, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA 4: RJ Lee Group, 350 Hochberg Road, Monroeville, PA 15146, USA 5: Universal Technology Corporation, Dayton, OH 45432, USA 6: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB, OH 45433–7817, USA 7: Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USA; Source Info: Jan2016, Vol. 24 Issue 1, p1; Subject Term: ELASTICITY; Subject Term: POLYCRYSTALS; Subject Term: FAST Fourier transforms; Subject Term: MICROSTRUCTURE; Subject Term: SIMULATION methods & models; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0965-0393/24/1/015006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111649222&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - De Castro, Mauricio T1 - Johann Gregor Mendel: paragon of experimental science. JO - Molecular Genetics & Genomic Medicine JF - Molecular Genetics & Genomic Medicine Y1 - 2016/01// VL - 4 IS - 1 M3 - Article SP - 3 EP - 8 SN - 23249269 AB - The article features Johann Mendel, which is considered the father of modern genetics. He was born on July 20, 1822 in Czech Republic and studied practical and theoretical philosophy and physics at the Philosophical institute of the University of Olmutz. He became a monk under the Augustinian Order at the St. Thomas Monastery in Brno. Details on Mendel's work on heredity traits are presented. KW - GENETICISTS KW - GENETICS KW - HEREDITY KW - MONKS KW - MENDEL, Gregor, 1822-1884 N1 - Accession Number: 112193705; De Castro, Mauricio 1; Affiliation: 1: United States Air Force Medical Genetics Center 81st Medical Group; Source Info: Jan2016, Vol. 4 Issue 1, p3; Subject Term: GENETICISTS; Subject Term: GENETICS; Subject Term: HEREDITY; Subject Term: MONKS; People: MENDEL, Gregor, 1822-1884; Number of Pages: 6p; Document Type: Article L3 - 10.1002/mgg3.199 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112193705&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schneeloch, James AU - Knarr, Samuel H. AU - Lum, Daniel J. AU - Howell, John C. T1 - Position-momentum Bell nonlocality with entangled photon pairs. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2016/01// VL - 93 IS - 1 M3 - Article SP - 1 EP - 1 SN - 10502947 AB - Witnessing continuous-variable Bell nonlocality is a challenging endeavor, but Bell himself showed how one might demonstrate this nonlocality. Although Bell nearly showed a violation using the Clauser-Horne-Shimony-Holt (CHSH) inequality with sign-binned position-momentum statistics of entangled pairs of particles measured at different times, his demonstration is subject to approximations not realizable in a laboratory setting. Moreover, he does not give a quantitative estimation of the maximum achievable violation for the wave function he considers. In this article, we show how his strategy can be reimagined using the transverse positions and momenta of entangled photon pairs measured at different propagation distances, and we find that the maximum achievable violation for the state he considers is actually very small relative to the upper limit of 2√2. Although Bell's wave function does not produce a large violation of the CHSH inequality, other states may yet do so. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS periodicals KW - QUANTUM entanglement KW - PHOTON pairs KW - PARTICLES (Nuclear physics) KW - SCHNEELOCH, James KW - KNARR, Samuel H. KW - LUM, Daniel J. KW - HOWELL, John C. N1 - Accession Number: 117403879; Schneeloch, James 1,2,3 Knarr, Samuel H. 1,2 Lum, Daniel J. 1,2 Howell, John C. 1,2; Affiliation: 1: Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA 2: Center for Coherence and Quantum Optics, University of Rochester, Rochester, New York 14627, USA 3: Air Force Research Laboratory, Information Directorate, Rome, New York 13441, USA; Source Info: Jan2016, Vol. 93 Issue 1, p1; Subject Term: PHYSICS periodicals; Subject Term: QUANTUM entanglement; Subject Term: PHOTON pairs; Subject Term: PARTICLES (Nuclear physics); People: SCHNEELOCH, James; People: KNARR, Samuel H.; People: LUM, Daniel J.; People: HOWELL, John C.; Number of Pages: 1p; Document Type: Article L3 - 10.1103/PhysRevA.93.012105 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117403879&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boyd, Iain D. AU - Josyula, Eswar T1 - Resolution of the vibrational energy distribution function using a direct simulation Monte Carlo-master equation approach. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2016/01// VL - 28 IS - 1 M3 - Article SP - 1 EP - 11 PB - American Institute of Physics SN - 10706631 AB - The direct simulation Monte Carlo (DSMC) method is the primary numerical technique for analysis of rarefied gas flows. While recent progress in computational chemistry is beginning to provide vibrationally resolved transition and reaction cross sections that can be employed inDSMCcalculations, the particle nature of the standard DSMC method makes it difficult to use this information in a statistically significant way. The current study introduces a new technique that makes it possible to resolve all of the vibrational energy levels by using a master equation approach along with temperature-dependent transition rates. The new method is compared to the standard DSMC technique for several heat bath and shock wave conditions and demonstrates the ability to resolve the full vibrational manifold at the expected overall rates of relaxation. The ability of the new master equation approach to the DSMC method for resolving, in particular, the high-energy states addresses a well-known, longstanding deficiency of the standard DSMC method. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VIBRATIONAL redistribution (Molecular physics) KW - COMPUTATIONAL chemistry KW - MONTE Carlo method KW - SHOCK waves KW - TEMPERATURE effect N1 - Accession Number: 112752652; Boyd, Iain D. 1; Email Address: iainboyd@umich.edu Josyula, Eswar 2; Affiliation: 1: Department of Aerospace Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: 2016, Vol. 28 Issue 1, p1; Subject Term: VIBRATIONAL redistribution (Molecular physics); Subject Term: COMPUTATIONAL chemistry; Subject Term: MONTE Carlo method; Subject Term: SHOCK waves; Subject Term: TEMPERATURE effect; Number of Pages: 11p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.4939517 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112752652&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Oganesov, Armen AU - Flint, Christopher AU - Vahala, George AU - Vahala, Linda AU - Yepez, Jeffrey AU - Soe, Min T1 - Imaginary time integration method using a quantum lattice gas approach. JO - Radiation Effects & Defects in Solids: Incorporating Plasma Techniques & Plasma Phenomena JF - Radiation Effects & Defects in Solids: Incorporating Plasma Techniques & Plasma Phenomena Y1 - 2016/01//Jan-Feb2016 VL - 171 IS - 1/2 M3 - Article SP - 96 EP - 102 SN - 10420150 AB - By modifying the collision operator in the quantum lattice gas (QLG) algorithm one can develop an imaginary time (IT) integration to determine the ground state solutions of the Schrödinger equation and its variants. These solutions are compared to those found by other methods (in particular the backward-Euler finite-difference scheme and the quantum lattice Boltzmann). In particular, the ground state of the quantum harmonic oscillator is considered as well as bright solitons in the one-dimensional (1D) non-linear Schrödinger equation. The dark solitons in an external potential are then determined. An advantage of the QLG IT algorithm is the avoidance of any real/complex matrix inversion and that its extension to arbitrary dimensions is straightforward. [ABSTRACT FROM PUBLISHER] AB - Copyright of Radiation Effects & Defects in Solids: Incorporating Plasma Techniques & Plasma Phenomena is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TIME integration scheme KW - GROUND state (Quantum mechanics) KW - QUBITS KW - SCHRODINGER equation KW - QUANTUM harmonic oscillators KW - SOLITONS KW - ground state wave function KW - non-unitarity KW - qubits N1 - Accession Number: 116268118; Oganesov, Armen 1 Flint, Christopher 1 Vahala, George 1 Vahala, Linda 2 Yepez, Jeffrey 3,4 Soe, Min 5; Affiliation: 1: Department of Physics, William & Mary, Williamsburg, VA23185, USA 2: Department of Electrical & Computer Engineering, Old Dominion University, Norfolk, VA23529, USA 3: Air Force Research Laboratory/Directed Energy, Air Force Maui Optical & Supercomputing Observatory, Kihei, HI96753, USA 4: Department of Physics and Astronomy, University of Hawai‘i at Manoa Watanabe Hall, 2505 Correa Road,Honolulu, HI96822, USA 5: Department of Mathematics & Physical Sciences, Rogers State University, Claremore, OK74017, USA; Source Info: Jan-Feb2016, Vol. 171 Issue 1/2, p96; Subject Term: TIME integration scheme; Subject Term: GROUND state (Quantum mechanics); Subject Term: QUBITS; Subject Term: SCHRODINGER equation; Subject Term: QUANTUM harmonic oscillators; Subject Term: SOLITONS; Author-Supplied Keyword: ground state wave function; Author-Supplied Keyword: non-unitarity; Author-Supplied Keyword: qubits; Number of Pages: 7p; Document Type: Article L3 - 10.1080/10420150.2015.1137916 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=116268118&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Salter, W. Bruce AU - Lovingood, Derek D. AU - Creasy, William AU - Owens, Jeffery R. T1 - Analysis of vaporous contaminants including low-volatility analytes permeating textiles at room temperature using headspace solid-phase microextraction GC-MS. JO - Surface & Interface Analysis: SIA JF - Surface & Interface Analysis: SIA Y1 - 2016/01// VL - 48 IS - 1 M3 - Article SP - 47 EP - 50 SN - 01422421 AB - Detection of toxic vapors permeating textiles is an important measure of the efficacy of a protective garment. Here, we demonstrate a method to detect and analyze contaminant vapors as they permeate through cotton textiles. Specifically, we show how this method can be improved upon by the incorporation of solid-phase micro extraction into the sampling process, thereby allowing low-volatility analytes to be sampled at room temperature without significantly influencing the concentration of the contaminant in the headspace. Further more, this technique can be extended to other applications in the development of barrier materials as it lends itself to kinetics as well as direct comparison of materials' total chemical permeation. [ABSTRACT FROM AUTHOR] AB - Copyright of Surface & Interface Analysis: SIA is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COTTON textiles KW - VAPORS KW - TEMPERATURE control KW - THERMAL properties KW - EVAPORATION (Chemistry) KW - chemical warfare agents KW - headspace analysis KW - permeation kinetics KW - SPME GC-MS KW - vapor permeation N1 - Accession Number: 111925142; Salter, W. Bruce 1; Email Address: brucesalter@gmail.com Lovingood, Derek D. 1 Creasy, William 2 Owens, Jeffery R. 3; Affiliation: 1: Universal Technology Corporation, 139 Barnes Drive Suite 2, Tyndall AFB, FL, 32403, USA 2: Leidos, P.O. Box 68 Gunpowder Branch, Aberdeen Proving Ground, MD, 21010, USA 3: Air Force Civil Engineer Center AFCEC/CXAE, Tyndall AFB, FL, 32403, USA; Source Info: Jan2016, Vol. 48 Issue 1, p47; Subject Term: COTTON textiles; Subject Term: VAPORS; Subject Term: TEMPERATURE control; Subject Term: THERMAL properties; Subject Term: EVAPORATION (Chemistry); Author-Supplied Keyword: chemical warfare agents; Author-Supplied Keyword: headspace analysis; Author-Supplied Keyword: permeation kinetics; Author-Supplied Keyword: SPME GC-MS; Author-Supplied Keyword: vapor permeation; NAICS/Industry Codes: 313220 Narrow Fabric Mills and Schiffli Machine Embroidery; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; Number of Pages: 4p; Document Type: Article L3 - 10.1002/sia.5887 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111925142&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Venkatakrishnan, S.V. AU - Drummy, L.F. AU - Jackson, M.A. AU - Bouman, C.A. AU - Simmons, J.P. AU - De Graef, M. T1 - A phantom-based forward projection approach in support of model-based iterative reconstructions for HAADF-STEM tomography. JO - Ultramicroscopy JF - Ultramicroscopy Y1 - 2016/01// VL - 160 M3 - Article SP - 7 EP - 17 SN - 03043991 AB - We introduce a forward model for the computation of high angle annular dark field (HAADF) images of nano-crystalline spherical particles and apply it to image simulations for assemblies of nano-spheres of Al, Cu, and Au with a range of sizes, as well as an artificial bi-sphere, consisting of solid hemispheres of Al and Cu or Al and Au. Comparison of computed intensity profiles with experimental observations on Al spheres at different microscope accelerating voltages provides confidence in the forward model. Simulated tomographic tilt series for both HAADF and bright field (BF) images are then used to illustrate that the model-based iterative reconstruction (MBIR) approach is capable of reconstructing sphere configurations of mixed atomic number, with the correct relative reconstructed intensity ratio proportional to the square of the atomic number ratio. [ABSTRACT FROM AUTHOR] AB - Copyright of Ultramicroscopy is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOCRYSTALS KW - IMAGE reconstruction KW - SCANNING transmission electron microscopy KW - ATOMIC number KW - MATHEMATICAL models KW - ITERATIVE methods (Mathematics) KW - SIMULATION methods & models KW - Forward model KW - High angle annular dark field KW - Image simulation KW - Nano-particles KW - Tomographic reconstruction N1 - Accession Number: 111565557; Venkatakrishnan, S.V. 1; Email Address: svenkata@purdue.edu Drummy, L.F. 2; Email Address: lawrence.drummy@us.af.mil Jackson, M.A. 3; Email Address: mike.jackson@bluequartz.net Bouman, C.A. 1; Email Address: bouman@purdue.edu Simmons, J.P. 2; Email Address: Jeff.Simmons@wpafb.af.mil De Graef, M. 4; Email Address: degraef@cmu.edu; Affiliation: 1: Purdue University, West Lafayette, IN 47907, USA 2: Air Force Research Laboratory, Wright Patterson AFB, OH 45433, USA 3: BlueQuartz Software, Springboro, OH 45066, USA 4: Carnegie Mellon University, Pittsburgh, PA 15213, USA; Source Info: Jan2016, Vol. 160, p7; Subject Term: NANOCRYSTALS; Subject Term: IMAGE reconstruction; Subject Term: SCANNING transmission electron microscopy; Subject Term: ATOMIC number; Subject Term: MATHEMATICAL models; Subject Term: ITERATIVE methods (Mathematics); Subject Term: SIMULATION methods & models; Author-Supplied Keyword: Forward model; Author-Supplied Keyword: High angle annular dark field; Author-Supplied Keyword: Image simulation; Author-Supplied Keyword: Nano-particles; Author-Supplied Keyword: Tomographic reconstruction; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ultramic.2015.09.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111565557&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - BROOKE, NICOLA T1 - The Art of the Interview. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2016/01// VL - 28 M3 - Book Review SP - 1 EP - 11 PB - US Air Force Academy English Department SN - 10466967 KW - MILITARY personnel KW - NONFICTION KW - ALEXIEVICH, Svetlana KW - ZINKY Boys: Soviet Voices From the Afghanistan War (Book) N1 - Accession Number: 119932745; BROOKE, NICOLA 1; Affiliation: 1: Teaches at the United States Air Force Academy; Source Info: 2016, Vol. 28, p1; Subject Term: MILITARY personnel; Subject Term: NONFICTION; Reviews & Products: ZINKY Boys: Soviet Voices From the Afghanistan War (Book); People: ALEXIEVICH, Svetlana; Number of Pages: 11p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119932745&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - HELLMANN, JESSICA T1 - High Skies and Fat Horses. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2016/01// VL - 28 M3 - Literary Criticism SP - 1 EP - 4 PB - US Air Force Academy English Department SN - 10466967 AB - A literary criticism of the novel "High Skies and Fat Horses" by William Wallisch is presented. Topics discussed include the author's comment on the Korean War setting of the novel, her perspective on the Vietnam conflict, and an overview of various cast of characters of the book. Also mentioned is the author's view on character Captain Whitman and his alcoholism. KW - LITERATURE -- History & criticism KW - WAR in literature KW - ALCOHOLISM in literature KW - WALLISCH, William KW - HIGH Skies & Fat Horses (Book) N1 - Accession Number: 119932769; HELLMANN, JESSICA 1; Affiliation: 1: Teaches English at the United States Air Force Academy; Source Info: 2016, Vol. 28, p1; Subject Term: LITERATURE -- History & criticism; Subject Term: WAR in literature; Subject Term: ALCOHOLISM in literature; Reviews & Products: HIGH Skies & Fat Horses (Book); People: WALLISCH, William; Number of Pages: 4p; Document Type: Literary Criticism UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119932769&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - KAHN, MEGAN T1 - Veteran Homecoming Stories. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2016/01// VL - 28 M3 - Interview SP - 1 EP - 13 PB - US Air Force Academy English Department SN - 10466967 AB - An interview with Justin Hudnall, a writer and recipient of San Diego Foundation's Creative Catalyst Fellowship and Rising Arts Leader award, is presented. Topics discussed include his inspiration for starting the project "Incoming: Veteran Writers on Returning Home" as a spin-off literary arts non-profit organization So Say We All, the reason for his decision to privilege the homecoming story over the combat story, and his definition of art for war literature. KW - AUTHORS KW - AUTHORS -- Awards KW - WAR in literature KW - NONPROFIT organizations KW - INTERVIEWS KW - HUDNALL, Justin -- Interviews N1 - Accession Number: 119932775; KAHN, MEGAN 1; Affiliation: 1: Teaching literature at the United States Air Force Academy; Source Info: 2016, Vol. 28, p1; Subject Term: AUTHORS; Subject Term: AUTHORS -- Awards; Subject Term: WAR in literature; Subject Term: NONPROFIT organizations; Subject Term: INTERVIEWS; NAICS/Industry Codes: 711510 Independent Artists, Writers, and Performers; NAICS/Industry Codes: 711513 Independent writers and authors; NAICS/Industry Codes: 813319 Other Social Advocacy Organizations; People: HUDNALL, Justin -- Interviews; Number of Pages: 13p; Document Type: Interview UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119932775&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - PURIO, SEAN T1 - Tongues, Tables, and Ears. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2016/01// VL - 28 M3 - Interview SP - 1 EP - 22 PB - US Air Force Academy English Department SN - 10466967 AB - An interview with poet John Guzlowski is presented. Topics discussed include whether the title of his poetry "Echoes of Tattered Tongues: Memory Unfolded" is emblematic of the entire collection, why he chose to open the collection with the voice of his mother, and thoughts on the overall structure of the poetry. KW - POETS KW - AUTHORS KW - POETRY collections KW - INTERVIEWS KW - GUZLOWSKI, John -- Interviews KW - ECHOES of Tattered Tongues: Memory Unfolded (Poem) N1 - Accession Number: 119932796; PURIO, SEAN 1; Affiliation: 1: Teaching in the Department of English & Fine Arts at the United States Air Force Academy; Source Info: 2016, Vol. 28, p1; Subject Term: POETS; Subject Term: AUTHORS; Subject Term: POETRY collections; Subject Term: INTERVIEWS; Reviews & Products: ECHOES of Tattered Tongues: Memory Unfolded (Poem); NAICS/Industry Codes: 711510 Independent Artists, Writers, and Performers; NAICS/Industry Codes: 711513 Independent writers and authors; People: GUZLOWSKI, John -- Interviews; Number of Pages: 22p; Document Type: Interview UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119932796&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jennings, John M. T1 - Japan 1941: Countdown to Infamy. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2016/01// VL - 28 M3 - Book Review SP - 10 EP - 12 PB - US Air Force Academy English Department SN - 10466967 KW - NONFICTION KW - JAPAN -- Foreign relations -- United States KW - HOTTA, Eri KW - JAPAN 1941: Countdown to Infamy (Book) N1 - Accession Number: 119932799; Jennings, John M. 1; Affiliation: 1: United States Air Force Academy; Source Info: 2016, Vol. 28, p10; Subject Term: NONFICTION; Subject Term: JAPAN -- Foreign relations -- United States; Reviews & Products: JAPAN 1941: Countdown to Infamy (Book); People: HOTTA, Eri; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119932799&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Swain, Kristine T1 - Stalingrad: The City that Defeated the Third Reich. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2016/01// VL - 28 M3 - Book Review SP - 16 EP - 20 PB - US Air Force Academy English Department SN - 10466967 KW - NONFICTION KW - HELLBECK, Jochen KW - TAUCHEN, Christopher KW - BONFIGLIO, Dominici KW - STALINGRAD: The City That Defeated the Third Reich (Book) N1 - Accession Number: 119932801; Swain, Kristine 1; Affiliation: 1: United States Air Force Academy; Source Info: 2016, Vol. 28, p16; Subject Term: NONFICTION; Reviews & Products: STALINGRAD: The City That Defeated the Third Reich (Book); People: HELLBECK, Jochen; People: TAUCHEN, Christopher; People: BONFIGLIO, Dominici; Number of Pages: 5p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=119932801&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2015-59082-003 AN - 2015-59082-003 AU - Ogle, Alan D. AU - Barron, Laura G. AU - Fedotova, Anna V. T1 - Job analysis of United States Air Force military training instructor duty: Identification of screening criteria for instructor candidate suitability. JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2016/01// VL - 28 IS - 1 SP - 50 EP - 63 CY - US PB - Educational Publishing Foundation SN - 0899-5605 SN - 1532-7876 AD - Ogle, Alan D., 559th Medical Group, Military Training Consult Service, United States Air Force Basic Training, Building 6420, Room 119, United States Air Force, 1618 Truemper Street, JBSA-Lackland, TX, US, 78236 N1 - Accession Number: 2015-59082-003. Partial author list: First Author & Affiliation: Ogle, Alan D.; 559th Medical Group, Military Training Consult Service, United States Air Force Basic Training, United States Air Force, Joint Base San Antonio, TX, US. Other Publishers: Lawrence Erlbaum; Taylor & Francis. Release Date: 20160111. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Job Analysis; Job Applicant Screening; Military Training; Teachers. Minor Descriptor: Noncommissioned Officers. Classification: Personnel Management & Selection & Training (3620); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Shipley Institute of Living Scale DOI: 10.1037/t07774-000; Minnesota Multiphasic Personality Inventory-2 DOI: 10.1037/t15120-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 14. Issue Publication Date: Jan, 2016. Publication History: Accepted Date: Nov 7, 2015; Revised Date: Oct 14, 2015; First Submitted Date: May 8, 2014. AB - Initial military training-instructor duty places noncommissioned officers (NCOs) in a critical position of trust to safely, effectively train and transition recruits into military service. In this context, ineffective or inappropriate behavior by instructors has been shown to impact trainee mental health, unit cohesion, and integration (Foran & Adler, 2013). Abuse of power, specifically exploitative and criminally and sexually abusive behavior by even a small number of instructors, as occurred in United States Air Force (USAF) basic military training (BMT) between 2010 and 2012, may result in a broad loss of public trust. Assessment of suitability for these duties is not consistently pursued across military services, with scant empirical work to best target what is necessary for safe, effective service as a BMT instructor. This article describes 3 job-analytic studies conducted to identify criteria for screening NCOs for USAF military training-instructor duty, as well as planned methods for evaluation. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - military training instructor KW - personnel screening KW - job analysis KW - abuse of power KW - sexual assault KW - 2016 KW - Air Force Personnel KW - Job Analysis KW - Job Applicant Screening KW - Military Training KW - Teachers KW - Noncommissioned Officers KW - 2016 DO - 10.1037/mil0000103 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-59082-003&site=ehost-live&scope=site UR - alan.ogle@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2016-52961-001 AN - 2016-52961-001 AU - Barron, Laura G. AU - Carretta, Thomas R. AU - Bonto-Kane, Maria Vincente A. T1 - Relations of personality traits to military aviator performance: It depends on the criterion. JF - Aviation Psychology and Applied Human Factors JO - Aviation Psychology and Applied Human Factors Y1 - 2016/// VL - 6 IS - 2 SP - 57 EP - 67 CY - Germany PB - Hogrefe Publishing SN - 2192-0923 SN - 2192-0931 AD - Barron, Laura G., Air Force Personnel Center, HQ AFPC/DSYX, 550 C Street West, Ste 45, Randolph AFB, TX, US, 78150-4747 N1 - Accession Number: 2016-52961-001. Partial author list: First Author & Affiliation: Barron, Laura G.; Air Force Personnel Center, Randolph AFB, TX, US. Release Date: 20161107. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aerospace Personnel; Job Performance; Military Personnel; Personality Traits. Minor Descriptor: Personnel Selection. Classification: Personnel Evaluation & Job Performance (3630); Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Self-Description Inventory; Air Force Officer Qualifying Test. Methodology: Empirical Study; Quantitative Study. Page Count: 11. Issue Publication Date: 2016. Publication History: Accepted Date: Jun 5, 2016; Revised Date: Jun 1, 2016; First Submitted Date: Jan 15, 2016. Copyright Statement: Hogrefe Publishing. 2016. AB - Most research on cognitive and personality characteristics needed for effective military aircrew has focused on identifying measures that predict initial training outcomes (Carretta & Ree, 2003). While many of the same cognitive aptitudes predictive of military pilot training outcomes are likely to also predict on-the-job technical performance, the strict technical focus of training may make it difficult to fully evaluate the relations of personality to broader job performance criteria. This study evaluated the extent to which pre-accession personality measures were predictive of the stratification (i.e., ranking based on job performance) of early-career US Air Force aviators on Officer Performance Reports in assignments after initial training. Supervisor and senior rater stratifications of aviators on overall job performance were significantly related to pre-accession personality scores. For both pilots and navigators whose job performance was ranked, higher levels of Extraversion and Agreeableness were associated with more favorable supervisory performance rankings (uncorrected r values = .20–.28). (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - aviator personality KW - job performance KW - personnel selection KW - officer performance ratings KW - 2016 KW - Aerospace Personnel KW - Job Performance KW - Military Personnel KW - Personality Traits KW - Personnel Selection KW - 2016 DO - 10.1027/2192-0923/a000100 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-52961-001&site=ehost-live&scope=site UR - Laura.Barron@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-17444-001 AN - 2015-17444-001 AU - Walsh, Matthew M. AU - Gluck, Kevin A. T1 - Verbalization of decision strategies in multiple‐cue probabilistic inference. JF - Journal of Behavioral Decision Making JO - Journal of Behavioral Decision Making JA - J Behav Decis Mak Y1 - 2016/01// VL - 29 IS - 1 SP - 78 EP - 91 CY - US PB - John Wiley & Sons SN - 0894-3257 SN - 1099-0771 AD - Walsh, Matthew M., Air Force Research Laboratory, Cognitive Models and Agents Branch, 711 HPW/RHAC-Cognitive Models and Agents Branch, 2620 Q Street, Building 852, Wright‐Patterson Air Force Base, OH, US, 45433 N1 - Accession Number: 2015-17444-001. Partial author list: First Author & Affiliation: Walsh, Matthew M.; Air Force Research Laboratory, Wright‐Patterson Air Force Base, OH, US. Release Date: 20150420. Correction Date: 20161208. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Decision Making; Oral Communication. Minor Descriptor: Cues; Inference. Classification: Cognitive Processes (2340). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: Multiple‐Cue Probabilistic Inference Task. Methodology: Empirical Study; Quantitative Study. Supplemental Data: Web Sites Internet. Page Count: 14. Issue Publication Date: Jan, 2016. Publication History: First Posted Date: Apr 17, 2015. Copyright Statement: John Wiley & Sons, Ltd. 2015. AB - In multiple‐cue probabilistic inference, people choose between alternatives based on several cues, each of which is differentially associated with an alternative's overall value. Various strategies have been proposed for probabilistic inference (e.g., weighted additive, tally, and take‐the‐best). These strategies differ in how many cue values they require to enact and in how they weight each cue. Do decision makers actually use any of these strategies? Ways to investigate this question include analyzing people's choices and the cues that they reveal. However, different strategies often predict the same decisions, and search behavior says nothing about whether or how people use the information that they acquire. In this research, we attempt to elucidate which strategies participants use in a multiple‐cue probabilistic inference task by examining verbal protocols, a high‐density source of process data. The promise of verbal data is in their utility for testing detailed information processing models. To that end, we apply protocol analysis in conjunction with computational simulations. We find converging evidence across outcome measures, search measures, and verbal reports that most participants use simplifying heuristics, namely take‐the‐best. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - multiple‐cue probabilistic inference KW - verbal protocols KW - process measures KW - take‐the‐best KW - tally KW - weighted additive KW - 2016 KW - Decision Making KW - Oral Communication KW - Cues KW - Inference KW - 2016 U1 - Sponsor: AFRL, US. Recipients: No recipient indicated DO - 10.1002/bdm.1878 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-17444-001&site=ehost-live&scope=site UR - mmw188@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2016-01430-001 AN - 2016-01430-001 AU - Kieras, David E. AU - Wakefield, Gregory H. AU - Thompson, Eric R. AU - Iyer, Nandini AU - Simpson, Brian D. T1 - Modeling two‐channel speech processing with the epic cognitive architecture. JF - Topics in Cognitive Science JO - Topics in Cognitive Science JA - Top Cogn Sci Y1 - 2016/01// VL - 8 IS - 1 SP - 291 EP - 304 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 1756-8757 SN - 1756-8765 AD - Kieras, David E., Electrical Engineering & Computer Science Department, University of Michigan, 2260 Hayward Street, Ann Arbor, MI, US, 48109-2121 N1 - Accession Number: 2016-01430-001. PMID: 26748483 Partial author list: First Author & Affiliation: Kieras, David E.; Electrical Engineering & Computer Science Department, University of Michigan, Ann Arbor, MI, US. Release Date: 20160114. Correction Date: 20160407. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Kieras, David E. Major Descriptor: Cognitive Processes; Speech Characteristics; Speech Perception; Computational Modeling. Classification: Artificial Intelligence & Expert Systems (4120). Population: Human (10). Methodology: Empirical Study; Quantitative Study. Page Count: 14. Issue Publication Date: Jan, 2016. Publication History: Accepted Date: Oct 18, 2015; Revised Date: Oct 18, 2015; First Submitted Date: Jun 15, 2015. Copyright Statement: All rights reserved. Cognitive Science Society, Inc. 2016. AB - An important application of cognitive architectures is to provide human performance models that capture psychological mechanisms in a form that can be 'programmed' to predict task performance of human–machine system designs. Although many aspects of human performance have been successfully modeled in this approach, accounting for multitalker speech task performance is a novel problem. This article presents a model for performance in a two‐talker task that incorporates concepts from psychoacoustics, in particular, masking effects and stream formation. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cognitive architecture KW - two‐channel speech KW - auditory perception KW - auditory streams KW - 2016 KW - Cognitive Processes KW - Speech Characteristics KW - Speech Perception KW - Computational Modeling KW - 2016 U1 - Sponsor: Office of Naval Research, Cognitive Science Program. Grant: N00014-10-1-0152; N00014-13-1-0358. Recipients: Kieras, David E.; Wakefield, Gregory H. U1 - Sponsor: US Air Force Office of Scientific Research. Recipients: Iyer, Nandini; Simpson, Brian D. DO - 10.1111/tops.12180 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-01430-001&site=ehost-live&scope=site UR - kieras@umich.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2016-28394-001 AN - 2016-28394-001 AU - Zheng, Yufeng AU - Blasch, Erik AU - Elmaghraby, Adel S. T1 - Biologically inspired methods for imaging, cognition, vision, and intelligence. JF - Computational Intelligence and Neuroscience JO - Computational Intelligence and Neuroscience JA - Comput Intell Neurosci Y1 - 2016/// VL - 2016 CY - US PB - Hindawi Publishing Corporation SN - 1687-5265 SN - 1687-5273 AD - Zheng, Yufeng, Department of Advanced Technologies, Alcorn State University, Lorman, MS, US, 39096 N1 - Accession Number: 2016-28394-001. PMID: 27293420 Partial author list: First Author & Affiliation: Zheng, Yufeng; Department of Advanced Technologies, Alcorn State University, Lorman, MS, US. Release Date: 20160922. Correction Date: 20160926. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Editorial. Language: English. Major Descriptor: Intelligence; Methodology; Computational Neuroscience. Minor Descriptor: Scientific Communication. Classification: Intelligent Systems (4100). Population: Human (10). ArtID: 2402067. Issue Publication Date: 2016. Publication History: Accepted Date: Nov 2, 2015; First Submitted Date: Nov 1, 2015. Copyright Statement: This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Yufeng Zheng et al. 2016. AB - This editorial provides an overview of the articles published in the current special issue of Computational Intelligence and Neuroscience. This special issue focuses on biologically inspired or nature-driven approaches to computer vision. There were a total of 17 manuscripts received, five of which were accepted for publication. Two papers address computer vision problems: estimation of homographs between two different perspectives and computation of visual saliency. The other three papers present optimization algorithms for pattern recognition using an artificial bee colony approach, a differential evolution method, and a feed-forward neural network. This special issue sheds light on the importance of bioinspired methods. Furthermore, Editors believe that deeper research and development on bioinspired methods will greatly benefit the computational intelligence community. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - computational intelligence KW - neuroscience KW - scientific communication KW - methodology KW - 2016 KW - Intelligence KW - Methodology KW - Computational Neuroscience KW - Scientific Communication KW - 2016 DO - 10.1155/2016/2402067 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-28394-001&site=ehost-live&scope=site UR - ORCID: 0000-0001-5274-8596 UR - UR - yzheng@alcorn.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Webster, P. T. AU - Riordan, N. A. AU - Liu, S. AU - Steenbergen, E. H. AU - Synowicki, R. A. AU - Zhang, Y.-H. AU - Johnson, S. R. T1 - Measurement of InAsSb bandgap energy and InAs/InAsSb band edge positions using spectroscopic ellipsometry and photoluminescence spectroscopy. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2015/12/28/ VL - 118 IS - 24 M3 - Article SP - 245706-1 EP - 245706-9 PB - American Institute of Physics SN - 00218979 AB - The structural and optical properties of lattice-matched InAs0.911Sb0.089 bulk layers and strain-balanced InAs/InAs1-xSbx (x∼0.1-0.4) superlattices grown on (100)-oriented GaSb substrates by molecular beam epitaxy are examined using X-ray diffraction, spectroscopic ellipsometry, and temperature dependent photoluminescence spectroscopy. The photoluminescence and ellipsometry measurements determine the ground state bandgap energy and the X-ray diffraction measurements determine the layer thickness and mole fraction of the structures studied. Detailed modeling of the X-ray diffraction data is employed to quantify unintentional incorporation of approximately 1% Sb into the InAs layers of the superlattices. A Kronig-Penney model of the superlattice miniband structure is used to analyze the valence band offset between InAs and InAsSb, and hence the InAsSb band edge positions at each mole fraction. The resulting composition dependence of the bandgap energy and band edge positions of InAsSb are described using the bandgap bowing model; the respective low and room temperature bowing parameters for bulk InAsSb are 938 and 750 meV for the bandgap, 558 and 383 meV for the conduction band, and -380 and -367 meV for the valence band. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENERGY gaps (Physics) KW - MATHEMATICAL models KW - LATTICE dynamics KW - X-ray diffraction -- Measurement KW - PHOTOLUMINESCENCE KW - SPECTRUM analysis N1 - Accession Number: 112036759; Webster, P. T. 1 Riordan, N. A. 1 Liu, S. 1 Steenbergen, E. H. 2 Synowicki, R. A. 3 Zhang, Y.-H. 1 Johnson, S. R. 1; Email Address: shane.johnson@asu.edu; Affiliation: 1: Center for Photonics Innovation and School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA 2: U. S. Air Force Research Laboratory, AFRL/RXAN, Wright Patterson, Ohio 45433, USA 3: J. A. Woollam Co., Inc., 645 M. Street, Suite 102, Lincoln, Nebraska 68508, USA; Source Info: 2015, Vol. 118 Issue 24, p245706-1; Subject Term: ENERGY gaps (Physics); Subject Term: MATHEMATICAL models; Subject Term: LATTICE dynamics; Subject Term: X-ray diffraction -- Measurement; Subject Term: PHOTOLUMINESCENCE; Subject Term: SPECTRUM analysis; Number of Pages: 9p; Illustrations: 8 Charts, 8 Graphs; Document Type: Article L3 - 10.1063/1.4939293 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112036759&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liu, Ningyu AU - McHarg, Matthew G. AU - Stenbaek-Nielsen, Hans C. T1 - High-altitude electrical discharges associated with thunderstorms and lightning. JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2015/12/15/Dec2015 Part A VL - 136 M3 - Article SP - 98 EP - 118 SN - 13646826 AB - The purpose of this paper is to introduce electrical discharge phenomena known as transient luminous events above thunderstorms to the lightning protection community. Transient luminous events include the upward electrical discharges from thunderstorms known as starters, jets, and gigantic jets, and electrical discharges initiated in the lower ionosphere such as sprites, halos, and elves. We give an overview of these phenomena with a focus on starters, jets, gigantic jets, and sprites, because similar to ordinary lightning, streamers and leaders are basic components of these four types of transient luminous events. We present a few recent observations to illustrate their main properties and briefly review the theories. The research in transient luminous events has not only advanced our understanding of the effects of thunderstorms and lightning in the middle and upper atmosphere, but also improved our knowledge of basic electrical discharge processes critical for sparks and lightning. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHTNING protection KW - ELECTRIC discharges KW - THUNDERSTORMS KW - IONOSPHERE KW - SPARKS KW - ATMOSPHERIC physics KW - Elves KW - Gigantic jets KW - Halos KW - Imaging KW - Jets KW - Leaders KW - Lightning KW - Sprites KW - Starters KW - Streamers KW - Transient luminous events N1 - Accession Number: 111144244; Liu, Ningyu 1; Email Address: nliu@fit.edu McHarg, Matthew G. 2 Stenbaek-Nielsen, Hans C. 3; Affiliation: 1: Department of Physics and Space Sciences, Florida Institute of Technology, Melbourne, FL, United States 2: The United States Air Force Academy, Colorado Spring, CO, United States 3: Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK, United States; Source Info: Dec2015 Part A, Vol. 136, p98; Subject Term: LIGHTNING protection; Subject Term: ELECTRIC discharges; Subject Term: THUNDERSTORMS; Subject Term: IONOSPHERE; Subject Term: SPARKS; Subject Term: ATMOSPHERIC physics; Author-Supplied Keyword: Elves; Author-Supplied Keyword: Gigantic jets; Author-Supplied Keyword: Halos; Author-Supplied Keyword: Imaging; Author-Supplied Keyword: Jets; Author-Supplied Keyword: Leaders; Author-Supplied Keyword: Lightning; Author-Supplied Keyword: Sprites; Author-Supplied Keyword: Starters; Author-Supplied Keyword: Streamers; Author-Supplied Keyword: Transient luminous events; NAICS/Industry Codes: 238299 All other building equipment contractors; Number of Pages: 21p; Document Type: Article L3 - 10.1016/j.jastp.2015.05.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111144244&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Konkova, Tatyana AU - Mironov, Sergey AU - Korznikov, Alexander AU - Korznikova, Galia AU - Myshlyaev, Mikhail AU - Semiatin, Lee T1 - A two-step approach for producing an ultrafine-grain structure in Cu–30Zn brass. JO - Materials Letters JF - Materials Letters Y1 - 2015/12/15/ VL - 161 M3 - Article SP - 1 EP - 4 SN - 0167577X AB - A two-step approach involving cryogenic rolling and subsequent recrystallization annealing was developed to produce an ultrafine-grain structure in Cu–30Zn brass. The material so processed was characterized by a mean grain size of 0.5 μm, fraction of high-angle boundaries of 90 pct., a weak crystallographic texture, and strength twice that of initial material. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYOGENICS KW - RECRYSTALLIZATION (Metallurgy) KW - ANNEALING of crystals KW - CRYSTAL structure KW - GRAIN size KW - MICROSTRUCTURE KW - Copper alloys KW - Cryogenic deformation KW - Electron backscatter diffraction KW - Grain refinement KW - Microstructure KW - Texture N1 - Accession Number: 110659251; Konkova, Tatyana 1 Mironov, Sergey 1,2; Email Address: S-72@mail.ru Korznikov, Alexander 1 Korznikova, Galia 1 Myshlyaev, Mikhail 3,4 Semiatin, Lee 5; Affiliation: 1: Institute for Metals Superplasticity Problems, Russian Academy of Science, 39 Khalturin Str., Ufa 450001, Russia 2: Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Sendai 980-8579, Japan 3: Baikov Institute of Metallurgy and Material Science, Russian Academy of Science, 49 Lenin-av., Moscow 119991, Russia 4: Institute of Solid State Physics, Russian Academy of Sciences, 2 Academic Osypian Str., Chernogolovka, Moscow Oblast 142432, Russia 5: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Dec2015, Vol. 161, p1; Subject Term: CRYOGENICS; Subject Term: RECRYSTALLIZATION (Metallurgy); Subject Term: ANNEALING of crystals; Subject Term: CRYSTAL structure; Subject Term: GRAIN size; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: Copper alloys; Author-Supplied Keyword: Cryogenic deformation; Author-Supplied Keyword: Electron backscatter diffraction; Author-Supplied Keyword: Grain refinement; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Texture; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.matlet.2015.08.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110659251&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shannon Ray AU - Warner A Miller AU - Paul M Alsing AU - Shing-Tung Yau T1 - Adiabatic isometric mapping algorithm for embedding 2-surfaces in Euclidean 3-space. JO - Classical & Quantum Gravity JF - Classical & Quantum Gravity Y1 - 2015/12/10/ VL - 32 IS - 23 M3 - Article SP - 1 EP - 1 SN - 02649381 AB - Alexandrov proved that any simplicial complex homeomorphic to a sphere with strictly non-negative Gaussian curvature at each vertex can be isometrically embedded uniquely in as a convex polyhedron. Due to the nonconstructive nature of his proof, there have yet to be any algorithms, that we know of, that realizes the Alexandrov embedding in polynomial time. Following his proof, we developed the adiabatic isometric mapping (AIM) algorithm. AIM uses a guided adiabatic pull-back procedure on a given polyhedral metric to produce an embedding that approximates the unique Alexandrov polyhedron. Tests of AIM applied to two different polyhedral metrics suggests that its run time is sub cubic with respect to the number of vertices. Although Alexandrov’s theorem specifically addresses the embedding of convex polyhedral metrics, we tested AIM on a broader class of polyhedral metrics that included regions of negative Gaussian curvature. One test was on a surface just outside the ergosphere of a Kerr black hole. [ABSTRACT FROM AUTHOR] AB - Copyright of Classical & Quantum Gravity is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAUSSIAN curvature KW - RESEARCH KW - COMPUTATIONAL geometry KW - HEURISTIC KW - ALGORITHMS KW - EMBEDDING theorems N1 - Accession Number: 111063864; Shannon Ray 1; Email Address: sray11@fau.edu Warner A Miller 1,2 Paul M Alsing 3 Shing-Tung Yau 2; Affiliation: 1: Department of Physics, Florida Atlantic University, Boca Raton FL 33431, USA 2: Department of Mathematics, Harvard University, Cambridge MA 02138, USA 3: Information Directorate, Air Force Research Laboratory, Rome, NY 13441, USA; Source Info: 12/10/2015, Vol. 32 Issue 23, p1; Subject Term: GAUSSIAN curvature; Subject Term: RESEARCH; Subject Term: COMPUTATIONAL geometry; Subject Term: HEURISTIC; Subject Term: ALGORITHMS; Subject Term: EMBEDDING theorems; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0264-9381/32/23/235012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111063864&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bradley S Sommers AU - Steven F Adams T1 - A comparison of gas temperatures measured by ultraviolet laser scattering in atmospheric plasma sources. JO - Journal of Physics: D Applied Physics JF - Journal of Physics: D Applied Physics Y1 - 2015/12/09/ VL - 48 IS - 48 M3 - Article SP - 1 EP - 1 SN - 00223727 AB - A laser scattering system utilizing an ultraviolet laser with a triple grating spectrometer has been assembled in order to measure gas temperature in atmospheric plasma sources. Such laser scattering interactions offer a non-invasive technique for investigating atmospheric microplasma sources, which have potential applications in remote optical sensing, materials processing, and environmental decontamination. This particular system is unique in that it utilizes a ultraviolet laser line (266 nm), which increases the cross section for Rayleigh and Raman scattering by a factor of 16 in comparison to the more common 532 nm laser operating in the visible range. In this work, the laser scattering system is used to directly compare the rotational gas temperature (Tr) and gas kinetic temperature (Tg) in two different atmospheric plasma sources [1]: a direct current plasma jet operating on nitrogen and [2] a conventional pin–pin glow microdischarge in air. Results show agreement between Tr and Tg both in the low temperature afterglow of the plasma jet (300–700 K) and the hot center of the atmospheric glow (1500–2000 K). These observations lend credence to the common assumption of rotational relaxation in atmospheric plasmas and validate the ultraviolet laser diagnostic for future application in atmospheric microplasma sources. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: D Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TEMPERATURE measurements KW - ULTRAVIOLET lasers KW - PLASMA sources KW - RAMAN scattering KW - SPECTROMETERS KW - MICROPLASMAS N1 - Accession Number: 110858293; Bradley S Sommers 1; Email Address: bradley.sommers.1.ctr@us.af.mil Steven F Adams 1; Email Address: steven.adams.11@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: 12/9/2015, Vol. 48 Issue 48, p1; Subject Term: TEMPERATURE measurements; Subject Term: ULTRAVIOLET lasers; Subject Term: PLASMA sources; Subject Term: RAMAN scattering; Subject Term: SPECTROMETERS; Subject Term: MICROPLASMAS; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0022-3727/48/48/485202 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110858293&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jones, Jason P. AU - Heller, Eric AU - Dorsey, Donald AU - Graham, Samuel T1 - Transient stress characterization of AlGaN/GaN HEMTs due to electrical and thermal effects. JO - Microelectronics Reliability JF - Microelectronics Reliability Y1 - 2015/12/02/Dec2015 Part B VL - 55 IS - 12 M3 - Article SP - 2634 EP - 2639 SN - 00262714 AB - In this paper, we present finite element simulation results of the transient stress response of an AlGaN/GaN high electron mobility transistor (HEMT). The modeling technique involves a small-scale electro-thermal model coupled to a large-scale mechanics model to determine the resulting stress distribution within a device operated under radio frequency (RF) conditions. The electrical characteristics of the modeled device were compared to experimental measurements and existing simulation data from literature for validation. The results show critical regions around the gate Schottky contact undergo drastically different transient stresses during pulsed operation. Specifically, stress profiles within the AlGaN layer around the gate foot print (GFP) undergo highly tensile electro-thermal stresses while stresses within the AlGaN outside the gate connected field plate (GCFP) towards the drain contact undergo highly tensile electrical stress and compressive thermoelastic stress. It is shown AlGaN/GaN HEMTs undergo large amounts of cyclic loading during typical transient operation. Based on these findings, transient failure mechanisms may differ from those previously studied under DC operation due to large amount of cyclic loading of a device around the gate structure. [ABSTRACT FROM AUTHOR] AB - Copyright of Microelectronics Reliability is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM gallium nitride KW - MODULATION-doped field-effect transistors KW - FINITE element method KW - STRAINS & stresses (Mechanics) KW - ELECTRON mobility KW - RADIO frequency KW - CYCLIC loading KW - AlGaN/GaN HEMTs KW - Electro-thermo-mechanical simulation. KW - Pulsed devices KW - Transient stress N1 - Accession Number: 111498537; Jones, Jason P. 1 Heller, Eric 2 Dorsey, Donald 2 Graham, Samuel 1; Affiliation: 1: Georgia Institute of Technology, Woodruff School of Mechanical Engineering, United States 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, United States; Source Info: Dec2015 Part B, Vol. 55 Issue 12, p2634; Subject Term: ALUMINUM gallium nitride; Subject Term: MODULATION-doped field-effect transistors; Subject Term: FINITE element method; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ELECTRON mobility; Subject Term: RADIO frequency; Subject Term: CYCLIC loading; Author-Supplied Keyword: AlGaN/GaN HEMTs; Author-Supplied Keyword: Electro-thermo-mechanical simulation.; Author-Supplied Keyword: Pulsed devices; Author-Supplied Keyword: Transient stress; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.microrel.2015.08.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111498537&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Meher, S. AU - Rojhirunsakool, T. AU - Nandwana, P. AU - Tiley, J. AU - Banerjee, R. T1 - Determination of solute site occupancies within γ′ precipitates in nickel-base superalloys via orientation-specific atom probe tomography. JO - Ultramicroscopy JF - Ultramicroscopy Y1 - 2015/12/02/Dec2015 Part 2 VL - 159 M3 - Article SP - 272 EP - 277 SN - 03043991 AB - The analytical limitations in atom probe tomography such as resolving a desired set of atomic planes, for solving complex materials science problems, have been overcome by employing a well-developed unique and reproducible crystallographic technique, involving synergetic coupling of orientation microscopy with atom probe tomography. The crystallographic information in atom probe reconstructions has been utilized to determine the solute site occupancies in Ni–Al–Cr based superalloys accurately. The structural information in atom probe reveals that both Al and Cr occupy the same sub-lattice within the L1 2 -ordered γ′ precipitates to form Ni 3 (Al,Cr) precipitates in a Ni–14Al–7Cr (at%) alloy. Interestingly, the addition of Co, which is a solid solution strengthener, to a Ni–14Al–7Cr alloy results in the partial reversal of Al site occupancy within γ′ precipitates to form (Ni,Al) 3 (Al,Cr,Co) precipitates. This unique evidence of reversal of Al site occupancy, resulting from the introduction of other solutes within the ordered structures, gives insights into the relative energetics of different sub-lattice sites when occupied by different solutes. [ABSTRACT FROM AUTHOR] AB - Copyright of Ultramicroscopy is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL alloys KW - PRECIPITATION (Chemistry) KW - ATOM-probe tomography KW - SOLUTION (Chemistry) KW - CRYSTALLOGRAPHY KW - APT KW - EBSD KW - Nickel-base superalloys KW - SDM KW - Site occupancy N1 - Accession Number: 111528180; Meher, S. 1 Rojhirunsakool, T. 1 Nandwana, P. 1 Tiley, J. 2 Banerjee, R. 1; Email Address: rajarshi.banerjee@unt.edu; Affiliation: 1: Center for Advanced Research and Technology, Department of Materials Science and Engineering, University of North Texas, Denton, TX, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH, USA; Source Info: Dec2015 Part 2, Vol. 159, p272; Subject Term: NICKEL alloys; Subject Term: PRECIPITATION (Chemistry); Subject Term: ATOM-probe tomography; Subject Term: SOLUTION (Chemistry); Subject Term: CRYSTALLOGRAPHY; Author-Supplied Keyword: APT; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: Nickel-base superalloys; Author-Supplied Keyword: SDM; Author-Supplied Keyword: Site occupancy; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.ultramic.2015.04.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111528180&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, S.I. AU - Dimiduk, D.M. AU - El-Awady, J.A. AU - Parthasarathy, T.A. AU - Uchic, M.D. AU - Woodward, C. T1 - Screw dislocation cross slip at cross-slip plane jogs and screw dipole annihilation in FCC Cu and Ni investigated via atomistic simulations. JO - Acta Materialia JF - Acta Materialia Y1 - 2015/12// VL - 101 M3 - Article SP - 10 EP - 15 SN - 13596454 AB - Using atomistic simulations, the effect of jogs on the cross-slip of screw character dislocations and screw-dipole annihilation was examined for both FCC Cu and Ni. The stress-free activation energy for cross-slip at jogs is close to 0.4 eV in Cu, determined using a nudged elastic band method. This value is a factor of 4-to-5 lower than the activation energy for cross-slip of screw dislocations in the absence of a jog. Similar results were obtained for Ni. Molecular dynamics simulations were used to study the annihilation of a jog-containing screw dipole. The critical Escaig stress on the glide plane for dipole annihilation drops quickly from the 0 K value of ∼400 MPa and, dipole annihilation is nearly athermal at room temperature. At 5 K, Escaig stresses on the cross-slip plane are a factor of 1.5 less effective than Escaig stresses on the glide plane and, glide stresses on the cross-slip plane are a factor of 3 less effective for dipole annihilation by cross-slip. The activation volume for cross-slip of screw dislocations at jogs with respect to these three stress components range from 6 to 20 b 3 . These results have been found to be useful in physics-based modeling of bulk cross-slip in higher length scale 3D dislocation dynamics simulations investigating dislocation pattern formation and fatigue structures in FCC crystals. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIPOLE moments KW - ANNIHILATION reactions KW - ACTIVATION energy KW - MATERIALS -- Fatigue KW - RUBBER bands KW - Atomistic simulations KW - Copper KW - Cross-slip KW - Jogs KW - Nickel KW - Screw dipole annihilation N1 - Accession Number: 110386579; Rao, S.I. 1,2; Email Address: raosatish806@gmail.com Dimiduk, D.M. 3 El-Awady, J.A. 4 Parthasarathy, T.A. 1 Uchic, M.D. 5 Woodward, C. 5; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Rd, Dayton, OH 45432-1894, United States 2: Institute of Mechanical Engineering, EPFL, Lausanne 1015, Switzerland 3: BlueQuartz Software, LLC, 400 S. Pioneer Blvd, Springboro, OH 45066, United States 4: Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, United States 5: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, OH 45433-7817, United States; Source Info: Dec2015, Vol. 101, p10; Subject Term: DIPOLE moments; Subject Term: ANNIHILATION reactions; Subject Term: ACTIVATION energy; Subject Term: MATERIALS -- Fatigue; Subject Term: RUBBER bands; Author-Supplied Keyword: Atomistic simulations; Author-Supplied Keyword: Copper; Author-Supplied Keyword: Cross-slip; Author-Supplied Keyword: Jogs; Author-Supplied Keyword: Nickel; Author-Supplied Keyword: Screw dipole annihilation; NAICS/Industry Codes: 326299 All Other Rubber Product Manufacturing; NAICS/Industry Codes: 326290 Other rubber product manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.actamat.2015.08.070 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110386579&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 111056650 T1 - Sterility maintenance study: Dynamic evaluation of sterilized rigid containers and wrapped instrument trays to prevent bacterial ingress. AU - Shaffer, Harry L. AU - Harnish, Delbert A. AU - McDonald, Michael AU - Vernon, Reid A. AU - Heimbuch, Brian K. Y1 - 2015/12// N1 - Accession Number: 111056650. Language: English. Entry Date: 20160310. Revision Date: 20160310. Publication Type: Article. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. Special Interest: Perioperative Care. Grant Information: Halyard Health (formerly Kimberly-Clark Healthcare). NLM UID: 8004854. KW - Cross Infection -- Prevention and Control KW - Asepsis -- Evaluation KW - Sterilization and Disinfection -- Equipment and Supplies KW - Bacterial Contamination -- Evaluation KW - Surgical Instruments KW - Materials Management KW - Funding Source KW - Evaluation Research KW - Comparative Studies KW - Bacteria KW - Colony Count, Microbial KW - Aerosols KW - Air Pollution, Indoor SP - 1336 EP - 1341 JO - American Journal of Infection Control JF - American Journal of Infection Control JA - AM J INFECT CONTROL VL - 43 IS - 12 CY - New York, New York PB - Elsevier Science AB - Background Sterilized packaging systems are designed to maintain the sterility of surgical instruments and devices from the time of sterilization until use. This study evaluated the effectiveness of rigid containers versus wrapped instrument trays, sterilized using North American sterilization protocols, to maintain a sterile internal environment poststerilization when challenged with aerosolized bacteria under dynamic environmental conditions. Methods Using a custom aerosol chamber, 111 rigid containers of various durations of use (unused, used <5 years, used 5-9 years) and 161 wrapped trays using 3 grades of sterilization wrap were challenged with ∼10 2 colony-forming units per liter of air containing aerosolized Micrococcus luteus with a count median particle size of 1 μm, while simultaneously experiencing air volume exchanges due to vacuum cycles–two 1-psi cycles, three 0.7-psi cycles, and three 0.4-psi cycles–to simulate air exchange events occurring during the sterilization, transportation, and storage of sterilized instrument trays in health care facilities. Results Of 111 rigid containers tested, 97 (87%) demonstrated bacterial ingress into the container. Of 161 wrapped trays, 0 (0%) demonstrated bacterial ingress into the tray. Contamination rates of rigid containers increased significantly with increasing duration of use. Conclusions In this study using a dynamic bacterial aerosol challenge, sterilized wrapped trays demonstrated significantly greater protection than sterilized rigid containers against the ingress of airborne bacteria. SN - 0196-6553 AD - Sterilization Consulting Services, LLC, Highlands Ranch, CO AD - Engineering Science Division, Applied Research Associates, Panama City, FL AD - United States Air Force Academy, Colorado Springs, CO DO - 10.1016/j.ajic.2015.07.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=111056650&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Wang, Fangfang AU - Meng, Dechao AU - Li, Xiaoning AU - Zhu, Zhu AU - Fu, Zhengping AU - Lu, Yalin T1 - Influence of annealing temperature on the crystallization and ferroelectricity of perovskite CH3NH3PbI3 film. JO - Applied Surface Science JF - Applied Surface Science Y1 - 2015/12//Dec2015 Part A VL - 357 M3 - Article SP - 391 EP - 396 SN - 01694332 AB - Organometal halide perovskite materials are emerging as solar cell materials, but the understanding of its performance is not yet enough, especially in its ferroelectricity which is important for the separation of photo-generated carriers. In this paper, we report investigations on influences of annealing temperature on the ferroelectricity of solution-processed methylammonium lead triiodide (CH 3 NH 3 PbI 3 ) thin film. It is found that annealing temperature has significant effect on the crystallinity and the crystal size, which further affects the ferroelectricity and the luminescence property. It indicates that the crystallization degree of the thin film and the uniformity of crystal growth are gradually getting better, and the phase contrast of positive polarization areas and negative polarization areas are gradually strengthened. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Surface Science is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANNEALING of metals KW - EFFECT of temperature on metals KW - CRYSTALLIZATION KW - FERROELECTRICITY KW - PEROVSKITE KW - METHYL groups KW - Annealing KW - CH 3 NH 3 PbI 3 KW - Ferroelectricity KW - Photoluminescence N1 - Accession Number: 111440416; Wang, Fangfang 1 Meng, Dechao 1 Li, Xiaoning 1 Zhu, Zhu 1 Fu, Zhengping 1,2; Email Address: fuzp@ustc.edu.cn Lu, Yalin 1,2,3,4; Email Address: yllu@ustc.edu.cn; Affiliation: 1: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, PR China 2: Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei 230026, PR China 3: Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, PR China 4: Laser Optics Research Center, US Air Force Academy, CO 80840, USA; Source Info: Dec2015 Part A, Vol. 357, p391; Subject Term: ANNEALING of metals; Subject Term: EFFECT of temperature on metals; Subject Term: CRYSTALLIZATION; Subject Term: FERROELECTRICITY; Subject Term: PEROVSKITE; Subject Term: METHYL groups; Author-Supplied Keyword: Annealing; Author-Supplied Keyword: CH 3 NH 3 PbI 3; Author-Supplied Keyword: Ferroelectricity; Author-Supplied Keyword: Photoluminescence; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.apsusc.2015.09.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111440416&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sihn, Sangwook AU - Varshney, Vikas AU - Roy, Ajit K. AU - Farmer, Barry L. T1 - Modeling for predicting strength of carbon nanostructures. JO - Carbon JF - Carbon Y1 - 2015/12// VL - 95 M3 - Article SP - 181 EP - 189 SN - 00086223 AB - We have developed a computational scheme to predict stiffness and strength of carbon nanostructures under various loading modes. The prediction method is based on combined molecular mechanics and molecular dynamics simulations to approach a global energy minimum at a given loading level with a preset temperature tolerance of 10 −6 K. We have applied the present method to various carbon nanostructures including carbon nanotubes (CNTs), graphene, CNT with defects, a CNT-graphene junction and pillared graphene nanostructures. For all cases, we have identified the maximum stress and strain at failure of these carbon nanostructures as well as their critical failure modes, and discussed mechanisms that lead to their catastrophic failure. [ABSTRACT FROM AUTHOR] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - STRENGTH of materials KW - PREDICTION models KW - STIFFNESS (Mechanics) KW - MOLECULAR dynamics -- Simulation methods N1 - Accession Number: 110866002; Sihn, Sangwook 1,2; Email Address: sangwook@alumni.stanford.edu Varshney, Vikas 1,3 Roy, Ajit K. 1 Farmer, Barry L. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate AFRL/RXAN, Wright-Patterson AFB, OH, 45433-7749, USA 2: University of Dayton Research Institute, Nonstructural Materials Division, 300 College Park, Dayton, OH, 45469-0050, USA 3: Universal Technology Corporation, 1270 N. Fairfield Rd., Dayton, OH, 45432-2636, USA; Source Info: Dec2015, Vol. 95, p181; Subject Term: CARBON nanotubes; Subject Term: STRENGTH of materials; Subject Term: PREDICTION models; Subject Term: STIFFNESS (Mechanics); Subject Term: MOLECULAR dynamics -- Simulation methods; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.carbon.2015.08.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110866002&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, Rahul AU - Islam, Ahmad E. AU - Pierce, Neal AU - Nikolaev, Pavel AU - Maruyama, Benji T1 - Chiral angle-dependent defect evolution in CVD-grown single-walled carbon nanotubes. JO - Carbon JF - Carbon Y1 - 2015/12// VL - 95 M3 - Article SP - 287 EP - 291 SN - 00086223 AB - Defects are ubiquitous in nanomaterials and it is critical to understand and control defect densities in these materials for electronic, chemical, and mechanical applications. Until now the relationship between nanomaterial structure and defect density during synthesis was limited to theoretical studies with no experimental confirmation of the predictions. Here we study defect evolution during the synthesis of individual single-walled carbon nanotubes (SWCNTs) using in situ Raman spectroscopy. SWCNTs are an important class of nanomaterials, and offer the unique ability to study the effect of their chiral angle on defect evolution during growth – a widely explored theoretical area that still lacks experimental confirmation. Our data reveals the first experimental evidence of chiral angle dependence on the defect density in SWCNTs, with lower defect density for higher chiral angle SWCNTs despite their faster growth rate. Modeling of the kinetics of defect generation reveals formation energy as the critical factor driving steady-state defect densities, with higher formation energies for topological defects in higher chiral angle SWCNTs and lower energies for low chiral angle SWCNTs. [ABSTRACT FROM AUTHOR] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHIRALITY KW - POINT defects KW - CHEMICAL vapor deposition KW - SINGLE walled carbon nanotubes KW - NANOSTRUCTURED materials N1 - Accession Number: 110866011; Rao, Rahul 1,2; Email Address: rahul.rao.ctr.in@us.af.mil Islam, Ahmad E. 1,3 Pierce, Neal 1,4 Nikolaev, Pavel 1,2 Maruyama, Benji 1; Email Address: benji.maruyama@us.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: UES Inc., Dayton, OH 45432, USA 3: National Research Council, Washington, DC 20001, USA 4: University of Dayton Research Institute, Dayton, OH 45469, USA; Source Info: Dec2015, Vol. 95, p287; Subject Term: CHIRALITY; Subject Term: POINT defects; Subject Term: CHEMICAL vapor deposition; Subject Term: SINGLE walled carbon nanotubes; Subject Term: NANOSTRUCTURED materials; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.carbon.2015.08.049 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110866011&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ruggles Gere, Anne1 AU - Swofford, Sarah C.2 AU - Silver, Naomi3 AU - Pugh, Melody4 T1 - Interrogating Disciplines/Disciplinarity in WAC/WID: An Institutional Study. JO - College Composition & Communication JF - College Composition & Communication J1 - College Composition & Communication PY - 2015/12// Y1 - 2015/12// VL - 67 IS - 2 CP - 2 M3 - Article SP - 243 EP - 266 SN - 0010096X AB - Examination of the perspectives and experiences of faculty, graduate student instructors, and undergraduates participating in a WAC/WID program shows how discipline-focused WAC/WID principles are often resisted, interrogated, and subverted by all three groups of stakeholders. New disciplinarity, especially its concepts of borderlands and elasticity, offers a promising focus for WAC/WID. [ABSTRACT FROM AUTHOR] KW - Educational programs KW - Universities & colleges -- Curricula KW - Writing KW - Ethnology KW - University of Michigan N1 - Accession Number: 111941608; Authors:Ruggles Gere, Anne 1; Swofford, Sarah C. 2; Silver, Naomi 3; Pugh, Melody 4; Affiliations: 1: Arthur F. Thurnau Professor and Gertrude Buck Collegiate Professor, University of Michigan; 2: Assistant professor of writing, University of Central Arkansas; 3: Associate director, Sweetland Center for Writing, University of Michigan; 4: Assistant professor of English, United States Air Force Academy; Subject: Educational programs; Subject: Universities & colleges -- Curricula; Subject: Writing; Subject: Ethnology; Subject: University of Michigan; Number of Pages: 24p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=111941608&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR AU - McGann, Brendan AU - Carter, Campbell D. AU - Ombrello, Timothy AU - Do, Hyungrok T1 - Direct spectrum matching of laser-induced breakdown for concentration and gas density measurements in turbulent reacting flows. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2015/12// VL - 162 IS - 12 M3 - Article SP - 4479 EP - 4485 SN - 00102180 AB - A direct spectrum matching method for laser-induced breakdown spectroscopy is proposed to simultaneously measure gas density and concentration in turbulent reacting environments with improved measurement accuracy. The breakdown spectrum recorded in the target flow is directly matched with a spectrum out of a database consisting of various emission spectra recorded under well-defined conditions in a range of gas density and composition. It is shown that the wavelength, intensity and line width of the atom/ion emission lines in the spectrum indicate atom composition and gas density that are independent of parent molecular species in the target flow. Once a matching spectrum (within 550–830 nm containing O, H, N, and C lines) in the database of a known gas condition is found, the concentration and gas density at the location of the breakdown can be accurately derived. A 532-nm Nd:YAG laser with 10-Hz pulse repetition rate is used to induce breakdown in fuel/air mixtures in a variable pressure combustion chamber to build the spectrum database.In addition, it is used in a cavity flameholder of a model supersonic combustor to measure the gas density and concentration fields in a turbulent reacting environment. All the measurements are completed within 100 ns after laser firing, before breakdown affects the flow and the fast evolving environment alters the breakdown spectrum. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROMETES KW - TURBULENCE KW - LASER-induced breakdown spectroscopy KW - MOLECULAR spectroscopy KW - GAS mixtures KW - Concentration KW - Density measurement KW - High-speed turublent combustion KW - Laser breakdown KW - LIBS N1 - Accession Number: 111441774; McGann, Brendan 1 Carter, Campbell D. 2 Ombrello, Timothy 2 Do, Hyungrok 3; Email Address: hyungrok@snu.ac.kr; Affiliation: 1: Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, IL 61801, United States 2: Air Force Research Laboratory (AFRL), Wright-Patterson Air Force Base, OH 45433, United States 3: Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul, South Korea; Source Info: Dec2015, Vol. 162 Issue 12, p4479; Subject Term: AEROMETES; Subject Term: TURBULENCE; Subject Term: LASER-induced breakdown spectroscopy; Subject Term: MOLECULAR spectroscopy; Subject Term: GAS mixtures; Author-Supplied Keyword: Concentration; Author-Supplied Keyword: Density measurement; Author-Supplied Keyword: High-speed turublent combustion; Author-Supplied Keyword: Laser breakdown; Author-Supplied Keyword: LIBS; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.combustflame.2015.08.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111441774&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fotia, Matthew L. AU - Sell, Brian C. AU - Hoke, John AU - Wakefield, Stephen AU - Schauer, Fred T1 - 1 kHz Mid-IR Absorption Spectroscopy for CO and CO 2 Concentration and Temperature Measurement. JO - Combustion Science & Technology JF - Combustion Science & Technology Y1 - 2015/12// VL - 187 IS - 12 M3 - Article SP - 1922 EP - 1936 SN - 00102202 AB - A sensor for in situ combustion gas measurements of concentration and temperature of carbon monoxide (CO) and carbon dioxide (CO2) has been developed and tested on a temperature calibrated diffusion flame burner in order to measure combustion efficiency. The fundamental bands of both molecules are exploited using distributed feedback quantum cascade lasers near 4.40 and 4.58 µm at which the absorption line-strengths are multiple orders of magnitude larger than overtone and combination bands at lower wavelengths. Spectra were taken at a rate of 1 kHz across a 50.8-mm path length of an ethylene (C2H4)-air diffusion flame at heights of 5 to 25 mm above the burner and at equivalence ratios ranging from 0.5 to 1.5. Total combustion efficiency was measured using the concentrations of CO and CO2, and temperature was obtained from relative strengths of multiple CO2absorption lines with differing lower state energies. The results are compared to previous coherent anti-Stokes Raman spectroscopy (CARS) temperature measurements and equilibrium chemical calculations. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Carbon monoxide KW - Carbon dioxide KW - Ethylene KW - Infrared radiation KW - Quantum cascade lasers KW - Anti-Stokes scattering KW - Combustion KW - Diffusion flame KW - Efficiency KW - Laser diagnostics KW - Quantum cascade N1 - Accession Number: 110124159; Fotia, Matthew L. 1; Sell, Brian C. 2; Hoke, John 2; Wakefield, Stephen 3; Schauer, Fred 4; Affiliations: 1: National Research Council, Wright-Patterson AFB, Ohio, USA; 2: Innovative Scientific Solutions Inc.,Dayton, Ohio, USA; 3: Air Force Institute of Technology, Wright-Patterson AFB, Ohio, USA; 4: Air Force Research Laboratory, Wright-Patterson AFB, Ohio, USA; Issue Info: 2015, Vol. 187 Issue 12, p1922; Thesaurus Term: Carbon monoxide; Thesaurus Term: Carbon dioxide; Thesaurus Term: Ethylene; Thesaurus Term: Infrared radiation; Subject Term: Quantum cascade lasers; Subject Term: Anti-Stokes scattering; Author-Supplied Keyword: Combustion; Author-Supplied Keyword: Diffusion flame; Author-Supplied Keyword: Efficiency; Author-Supplied Keyword: Laser diagnostics; Author-Supplied Keyword: Quantum cascade; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 15p; Document Type: Article L3 - 10.1080/00102202.2015.1069281 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=110124159&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Yun, Gun Jin AU - Zhao, Li AU - Iarve, Endel T1 - Probabilistic mesh-independent discrete damage analyses of laminate composites. JO - Composite Structures JF - Composite Structures Y1 - 2015/12// VL - 133 M3 - Article SP - 22 EP - 30 SN - 02638223 AB - In this paper, probabilistic failure response and damage patterns in laminate composites was investigated by considering spatially varying and cross-correlated strength properties. The effect of statistical parameters such as the correlation length, variance and correlation coefficient between normal and shear strength within Discrete Damage Modeling (DDM) framework was examined for the first time. For this purpose, an efficient random field modeling framework for multiple cross-correlated random fields is proposed whereby different sets of uncorrelated random variables in Karhunen–Loève (KL) expansion corresponding to independent auto-correlation functions are generated and transformed to sets of correlated random variables. DDM is performed by means of Regularized eXtended-Finite Element Method (Rx-FEM) where multiple matrix cracks in different plies are modeled simultaneously with interplay delaminations in interactive fashion. Two composite laminates a quasi-isotropic carbon/epoxy [45/90/−45/90] s Hexply IM7/8552 and [45/−45/90] s T300/976 were modeled by using probabilistic DDM. Significant effects of the statistical parameters on the failure behavior and ultimate component strength were observed, manifesting importance of accurate definitions of the statistical properties for predicting probabilistic failure behavior and damage tolerance of laminate composites. The average strength values predicted by probabilistic analysis with spatially correlated strength values were closer to experimental data than the predictions with uncorrelated strength values. [ABSTRACT FROM AUTHOR] AB - Copyright of Composite Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAMINATED materials KW - MATERIALS -- Mechanical properties KW - CONTINUUM damage mechanics KW - STRENGTH of materials KW - SHEAR strength KW - RANDOM variables KW - Discrete Damage Modeling KW - Finite element analysis (FEA) KW - Matrix cracking KW - Polymer–matrix composite (PMCs) KW - Probabilistic failure analysis KW - Random fields N1 - Accession Number: 109955510; Yun, Gun Jin 1; Email Address: gy3@uakron.edu Zhao, Li 1 Iarve, Endel 2,3; Affiliation: 1: Department of Civil Engineering, The University of Akron, Akron, OH 44321, USA 2: Air Force Research Laboratory, 2941 Hobson Way, WPAFB, OH 45433, USA 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA; Source Info: Dec2015, Vol. 133, p22; Subject Term: LAMINATED materials; Subject Term: MATERIALS -- Mechanical properties; Subject Term: CONTINUUM damage mechanics; Subject Term: STRENGTH of materials; Subject Term: SHEAR strength; Subject Term: RANDOM variables; Author-Supplied Keyword: Discrete Damage Modeling; Author-Supplied Keyword: Finite element analysis (FEA); Author-Supplied Keyword: Matrix cracking; Author-Supplied Keyword: Polymer–matrix composite (PMCs); Author-Supplied Keyword: Probabilistic failure analysis; Author-Supplied Keyword: Random fields; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.compstruct.2015.07.083 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109955510&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alexander, Mark H. AU - Cavanaugh, William D. T1 - Sole Source Acquisitions for Foreign Military Sales Customers. JO - DISAM Journal of International Security Assistance Management JF - DISAM Journal of International Security Assistance Management Y1 - 2015///DISAM Annual2015 VL - 4 M3 - Article SP - 35 EP - 38 PB - Defense Institute of Security Assistance Management SN - 15320359 AB - The article discusses the rules on competition requirements under the Competition in Contracting Act of 1984 (CICA) as it applies to Foreign Military Sales (FMS) acquisitions. Topics discussed include the guidance and process for supporting a sole course FMS purchases under the International Agreement exception to CICA and circumstances for the compliance of noncompetitive contracts. KW - DEFENSE contracts -- Law & legislation KW - DEFENSE industries KW - PUBLIC contracts -- United States KW - ARMS transfers -- United States KW - MILITARY policy KW - UNITED States N1 - Accession Number: 115005051; Alexander, Mark H. 1 Cavanaugh, William D. 2; Affiliation: 1: Air Force Material Command 2: Defense Security Cooperation Agency; Source Info: DISAM Annual2015, Vol. 4, p35; Subject Term: DEFENSE contracts -- Law & legislation; Subject Term: DEFENSE industries; Subject Term: PUBLIC contracts -- United States; Subject Term: ARMS transfers -- United States; Subject Term: MILITARY policy; Subject Term: UNITED States; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115005051&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Avrutsky, Ivan AU - Smith, Christian W. AU - Cleary, Justin W. AU - Hendrickson, Joshua R. T1 - Resonant Diffraction Into Symmetry-Prohibited Orders of Metal Gratings. JO - IEEE Journal of Quantum Electronics JF - IEEE Journal of Quantum Electronics Y1 - 2015/12// VL - 51 IS - 12 M3 - Article SP - 1 EP - 9 SN - 00189197 AB - We study, by numerical simulations and experimentally, the resonant diffraction by metal (Ag) gratings in the mid-IR ( \sim 10~\mu \textm ) spectral range. The excitation of surface plasmon-polaritons facilitates narrow-band resonantly enhanced diffraction into symmetry-prohibited diffraction orders. We show that, even though the propagation losses for plasmonic modes are greatly reduced at longer wavelengths, the magnitude of the resonant diffraction peak remains limited due to diffraction into other, normally allowed, diffraction orders. The grating depth dependence of the resonant diffraction spectra indicates that with shallower gratings, the Q -factor of the resonance may become as large as 10^{3} – 10^{4}$ , while the magnitude of the peak is reduced. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Journal of Quantum Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE plasmons KW - DIFFRACTION patterns KW - COMPUTER simulation KW - WAVELENGTHS KW - HARMONIC analysis (Mathematics) KW - SURFACE waves (Fluids) KW - Diffraction KW - Diffraction gratings KW - Gratings KW - Harmonic analysis KW - Infrared KW - Metals KW - Scattering KW - Surface plasmons KW - Surface waves N1 - Accession Number: 112538405; Avrutsky, Ivan 1 Smith, Christian W. 2 Cleary, Justin W. 3 Hendrickson, Joshua R. 3; Affiliation: 1: Department of Electrical and Computer Engineering, Wayne State University, Detroit, MI, USA 2: Department of Physics, University of Central Florida, Orlando, FL, USA 3: , Air Force Research Laboratory, Sensor Directorate, Wright Patterson Air Force Base, OH, USA; Source Info: Dec2015, Vol. 51 Issue 12, p1; Subject Term: SURFACE plasmons; Subject Term: DIFFRACTION patterns; Subject Term: COMPUTER simulation; Subject Term: WAVELENGTHS; Subject Term: HARMONIC analysis (Mathematics); Subject Term: SURFACE waves (Fluids); Author-Supplied Keyword: Diffraction; Author-Supplied Keyword: Diffraction gratings; Author-Supplied Keyword: Gratings; Author-Supplied Keyword: Harmonic analysis; Author-Supplied Keyword: Infrared; Author-Supplied Keyword: Metals; Author-Supplied Keyword: Scattering; Author-Supplied Keyword: Surface plasmons; Author-Supplied Keyword: Surface waves; Number of Pages: 9p; Document Type: Article L3 - 10.1109/JQE.2015.2501642 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112538405&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Monzel, W. Jacob AU - Hoff, Brad W. AU - Maestas, Sabrina S. AU - French, David M. AU - Hayden, Steven C. T1 - Dielectric breakdown of additively manufactured polymeric materials. JO - IEEE Transactions on Dielectrics & Electrical Insulation JF - IEEE Transactions on Dielectrics & Electrical Insulation Y1 - 2015/12// VL - 22 IS - 6 M3 - Article SP - 3543 EP - 3549 SN - 10709878 AB - Dielectric strength testing of selected Polyjet-printed polymer plastics was performed in accordance with ASTM D149. This dielectric strength data is compared to manufacturer-provided dielectric strength data for selected plastics printed using the stereolithography (SLA), fused deposition modeling (FDM), and selective laser sintering (SLS) methods. Tested Polyjet samples demonstrated dielectric strengths as high as 47.5 kV/mm for a 0.5 mm thick sample and 32.1 kV/mm for a 1.0 mm sample. The dielectric strength of the additively manufactured plastics evaluated as part of this study was lower than the majority of non-printed plastics by at least 15% (with the exception of polycarbonate). [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Dielectrics & Electrical Insulation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRIC breakdown KW - THREE-dimensional printing KW - POLYMERS KW - DIELECTRIC strength KW - STEREOLITHOGRAPHY KW - SINTERING KW - additive manufacturing KW - Dielectric breakdown KW - dielectric materials KW - dielectric measurements KW - dielectric strength KW - Electrodes KW - FDM KW - Frequency division multiplexing KW - fused deposition modeling KW - Plastics KW - Polyjet KW - Printing KW - Rapid prototyping KW - Resins KW - SLA KW - SLS KW - Testing N1 - Accession Number: 112245918; Monzel, W. Jacob 1 Hoff, Brad W. 1 Maestas, Sabrina S. 1 French, David M. 1 Hayden, Steven C. 2; Affiliation: 1: Air Force Research Laboratory Kirtland AFB Albuquerque, New Mexico, USA 2: Los Alamos National Laboratory Center for Integrated Nanotechnologies Los Alamos, New Mexico, USA; Source Info: Dec2015, Vol. 22 Issue 6, p3543; Subject Term: DIELECTRIC breakdown; Subject Term: THREE-dimensional printing; Subject Term: POLYMERS; Subject Term: DIELECTRIC strength; Subject Term: STEREOLITHOGRAPHY; Subject Term: SINTERING; Author-Supplied Keyword: additive manufacturing; Author-Supplied Keyword: Dielectric breakdown; Author-Supplied Keyword: dielectric materials; Author-Supplied Keyword: dielectric measurements; Author-Supplied Keyword: dielectric strength; Author-Supplied Keyword: Electrodes; Author-Supplied Keyword: FDM; Author-Supplied Keyword: Frequency division multiplexing; Author-Supplied Keyword: fused deposition modeling; Author-Supplied Keyword: Plastics; Author-Supplied Keyword: Polyjet; Author-Supplied Keyword: Printing; Author-Supplied Keyword: Rapid prototyping; Author-Supplied Keyword: Resins; Author-Supplied Keyword: SLA; Author-Supplied Keyword: SLS; Author-Supplied Keyword: Testing; NAICS/Industry Codes: 212210 Iron Ore Mining; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TDEI.2015.005199 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112245918&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dong, C. F. AU - Zhang, Peng AU - Chernin, David AU - Lau, Y. Y. AU - Hoff, Brad W. AU - Simon, D. H. AU - Wong, Patrick AU - Greening, Geoffrey B. AU - Gilgenbach, Ronald M. T1 - Harmonic Content in the Beam Current in a Traveling-Wave Tube. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices Y1 - 2015/12// VL - 62 IS - 12 M3 - Article SP - 4285 EP - 4292 SN - 00189383 AB - In a klystron, charge overtaking of electrons leads to an infinity of ac current on the electron beam. This paper extends the klystron theory of orbital bunching to a traveling-wave tube (TWT). We calculate the harmonic content of the beam current in a TWT that results from an input signal of a single frequency. We assume that the electron orbits are governed by Pierce’s classical three-wave, linear theory. The crowding of these linear orbits may lead to charge overtaking and, therefore, harmonic generation on the beam current, as in a klystron. We analytically calculate the buildup of harmonic content as a function of tube length from the input, and compare the results with the CHRISTINE code. Good agreement is found. Also found is the surprisingly high level of harmonic contents in the electron beam current, even when the TWT operates in the small signal regime. A dimensionless bunching parameter for a TWT, X=(2P\rm{ in/(Pb C))}^{1/2} , is identified, which characterizes the harmonic content in the ac beam current, where $P_{{\textrm {in}}} is the input power of the signal, Pb is the dc beam power, and C is Pierce’s gain parameter. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON beams KW - HARMONICS (Electric waves) KW - TRAVELING-wave tubes KW - KLYSTRONS KW - SIGNAL detection KW - Electron beam applications KW - Harmonic analysis KW - Klystrons KW - Orbital calculations N1 - Accession Number: 111177482; Dong, C. F. 1 Zhang, Peng 2 Chernin, David 3 Lau, Y. Y. 2 Hoff, Brad W. 4 Simon, D. H. 2 Wong, Patrick 2 Greening, Geoffrey B. 2 Gilgenbach, Ronald M. 2; Affiliation: 1: Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI, USA 2: Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, MI, USA 3: , Leidos Corporation, Reston, VA, USA 4: Air Force Research Laboratory, Kirkland Air Force Base, Albuquerque, NM, USA; Source Info: Dec2015, Vol. 62 Issue 12, p4285; Subject Term: ELECTRON beams; Subject Term: HARMONICS (Electric waves); Subject Term: TRAVELING-wave tubes; Subject Term: KLYSTRONS; Subject Term: SIGNAL detection; Author-Supplied Keyword: Electron beam applications; Author-Supplied Keyword: Harmonic analysis; Author-Supplied Keyword: Klystrons; Author-Supplied Keyword: Orbital calculations; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TED.2015.2490584 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111177482&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, W. AU - Barnaby, H. J. AU - Kozicki, M. N. AU - Edwards, A. H. AU - Gonzalez-Velo, Y. AU - Fang, R. AU - Holbert, K. E. AU - Yu, S. AU - Yu, W. T1 - A Study of Gamma-Ray Exposure of Cu–SiO_2 Programmable Metallization Cells. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2015/12//Dec2015 Part 1 VL - 62 IS - 6a M3 - Article SP - 2404 EP - 2411 SN - 00189499 AB - The Cu–SiO_2 based programmable metallization cell (PMC) is a promising alternative to the Ag-chalcogenide glass PMC because of its low power consumption and CMOS-compatibility. Understanding its total ionizing dose (TID) response helps in assessing the reliability of this technology in ionizing radiation environments and benefits its expansion in the space electronics market. In this paper, the impacts of TID on the switching characteristics of Cu–SiO_2 PMC are investigated for the first time. The devices were step irradiated with ^60Co gamma-rays to a maximum dose of 7.1 Mrad (\ SiO_2). The results show that gamma-ray irradiation has a negligible impact on the virgin-state and on-state resistance of Cu–SiO_2 PMCs. The off-state resistance slightly decreases after the first 1.5 Mrad(\ SiO_2) of exposure, but this reduction saturates after higher levels of TID. Other switching characteristics such as the set voltage, multilevel switching capability and endurance were also studied, all of which did not show observable changes after gamma-ray radiation. The immunity to ionizing radiation is attributed to the suppression of the photo-doping process. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Gamma rays KW - Chalcogenide glass KW - Ionizing radiation KW - Atmospheric radiation KW - Complementary metal oxide semiconductors KW - Space environment KW - CMOS-compatibility KW - Conductive-bridging random access memory (CBRAM) KW - gamma-ray radiation KW - Gamma-rays KW - Ionizing radiation KW - nonvolatile memory KW - programmable metallization cell KW - Radiation effects KW - Resistance KW - resistive switching KW - Silicon compounds KW - Switching circuits KW - \SiO_2 N1 - Accession Number: 115132530; Chen, W. 1; Barnaby, H. J. 1; Kozicki, M. N. 1; Edwards, A. H. 2; Gonzalez-Velo, Y. 1; Fang, R. 1; Holbert, K. E. 1; Yu, S. 1; Yu, W. 1; Affiliations: 1: School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ, USA; 2: Air Force Research Laboratory, Space Vehicles Directorate, New Mexico, Kirtland AFB, USA; Issue Info: Dec2015 Part 1, Vol. 62 Issue 6a, p2404; Thesaurus Term: RESEARCH; Subject Term: Gamma rays; Subject Term: Chalcogenide glass; Subject Term: Ionizing radiation; Subject Term: Atmospheric radiation; Subject Term: Complementary metal oxide semiconductors; Subject Term: Space environment; Author-Supplied Keyword: CMOS-compatibility; Author-Supplied Keyword: Conductive-bridging random access memory (CBRAM); Author-Supplied Keyword: gamma-ray radiation; Author-Supplied Keyword: Gamma-rays; Author-Supplied Keyword: Ionizing radiation; Author-Supplied Keyword: nonvolatile memory; Author-Supplied Keyword: programmable metallization cell; Author-Supplied Keyword: Radiation effects; Author-Supplied Keyword: Resistance; Author-Supplied Keyword: resistive switching; Author-Supplied Keyword: Silicon compounds; Author-Supplied Keyword: Switching circuits; Author-Supplied Keyword: \SiO_2; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TNS.2015.2478883 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=115132530&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Johnston, W. Robert AU - O'Brien, T. Paul AU - Huston, Stuart L. AU - Guild, Timothy B. AU - Ginet, Gregory P. T1 - Recent Updates to the AE9/AP9/SPM Radiation Belt and Space Plasma Specification Model. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2015/12//Dec2015 Part 1 VL - 62 IS - 6a M3 - Article SP - 2760 EP - 2766 SN - 00189499 AB - The AE9/AP9/SPM radiation belt and space plasma specification model has been recently updated with Version 1.20. We review these updates of flux maps and features, discuss validation results, and summarize pending improvements. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Radiation belts KW - Space plasmas KW - Astrophysical radiation KW - Space environment KW - Plasma (Ionized gases) KW - Atmospheric modeling KW - Data models KW - Low earth orbit satellites KW - Measurement uncertainty KW - Monte Carlo methods KW - Plasmas KW - Radiation belt KW - Satellites KW - Space missions KW - space plasma KW - specification models N1 - Accession Number: 115132528; Johnston, W. Robert 1; O'Brien, T. Paul 2; Huston, Stuart L. 3; Guild, Timothy B. 4; Ginet, Gregory P. 5; Affiliations: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, NM, USA; 2: Aerospace Corporation, Chantilly, VA, USA; 3: Atmospheric and Environmental Research, Inc., Lexington, MA, USA; 4: The Aerospace Corporation, Chantilly, VA, USA; 5: Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, MA, USA; Issue Info: Dec2015 Part 1, Vol. 62 Issue 6a, p2760; Thesaurus Term: RESEARCH; Subject Term: Radiation belts; Subject Term: Space plasmas; Subject Term: Astrophysical radiation; Subject Term: Space environment; Subject Term: Plasma (Ionized gases); Author-Supplied Keyword: Atmospheric modeling; Author-Supplied Keyword: Data models; Author-Supplied Keyword: Low earth orbit satellites; Author-Supplied Keyword: Measurement uncertainty; Author-Supplied Keyword: Monte Carlo methods; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Radiation belt; Author-Supplied Keyword: Satellites; Author-Supplied Keyword: Space missions; Author-Supplied Keyword: space plasma; Author-Supplied Keyword: specification models; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TNS.2015.2476470 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=115132528&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Matveev, Igor B. AU - Ombrello, Timothy T1 - Guest Editorial Special Issue on Plasma-Assisted Technologies 2015. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2015/12//Dec2015 Part 1 VL - 43 IS - 12, Part 1 M3 - Article SP - 3961 EP - 3963 SN - 00933813 AB - This is the tenth issue in a series of special issues on plasma-assisted technologies (PATs). Contributions from a growing field with many new multidisciplinary plasma applications have resulted in the largest issue to date. This follows on the success of the nine previous issues, dating back to the original IEEE-TPS Special Issue on Plasma-Assisted Combustion published in December 2006. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TECHNOLOGICAL innovations KW - PLASMA (Ionized gases) KW - IONIZED gases KW - COMBUSTION KW - INTERDISCIPLINARY research N1 - Accession Number: 111881348; Matveev, Igor B. 1 Ombrello, Timothy 2; Affiliation: 1: Applied Plasma Technologies, LLC, McLean, VA, USA 2: , Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Dec2015 Part 1, Vol. 43 Issue 12, Part 1, p3961; Subject Term: TECHNOLOGICAL innovations; Subject Term: PLASMA (Ionized gases); Subject Term: IONIZED gases; Subject Term: COMBUSTION; Subject Term: INTERDISCIPLINARY research; Number of Pages: 3p; Document Type: Article L3 - 10.1109/TPS.2015.2499124 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111881348&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Johnson, Douglas J. AU - Niedbalski, Nicholas P. AU - Ervin, Jamie S. AU - Patnaik, Soumya S. T1 - Ammonium carbamate-based heat exchanger reactor as an endothermic heat sink for thermal management. JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2015/12// VL - 91 M3 - Article SP - 766 EP - 776 SN - 00179310 AB - We present our work on the investigation of a chemical reactor heat sink which used an endothermic reaction to absorb low-grade heat. Ammonium carbamate, which has an enthalpy of decomposition of ∼2 MJ/kg and decomposes over a wide range of temperatures, was used as the endothermic chemical. The objective of the effort was to develop the methods and apparatus required to demonstrate endothermic cooling. Ammonium carbamate (AC) particles were suspended in propylene glycol (PG) and pumped through a heat exchanger, where it chemically reacted and decomposed as it absorbed heat from a hot fluid. Two conditions involving the reactants (AC in PG) were studied: (1) elevated decomposition temperatures occurring at near-ambient pressures and (2) near-ambient decomposition temperatures occurring at low pressures. The influences of reactant pressure, relative reactant temperature, reactant residence time, AC particle size, and AC mass flow rate on the heat absorption rate were investigated. Reaction pressure, residence time, and temperature were found to be the dominant factors. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBAMATES KW - CHEMICAL reactors KW - ENDOTHERMIC reactions KW - HEAT exchangers KW - THERMAL management (Electronic packaging) KW - HEAT sinks (Electronics) KW - Ammonium carbamate KW - Endothermic reaction KW - Heat exchanger (HEX) reactor KW - Low-grade heat KW - Thermal management N1 - Accession Number: 109502266; Johnson, Douglas J. 1; Email Address: johnsond2@udayton.edu Niedbalski, Nicholas P. 2 Ervin, Jamie S. 1 Patnaik, Soumya S. 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park Ave., Dayton, OH 45469, United States 2: Air Force Research Laboratory, Aerospace Systems Directorate, Mechanical and Thermal Systems Branch, 1950 5th St., Wright-Patterson AFB, OH 45433, United States; Source Info: Dec2015, Vol. 91, p766; Subject Term: CARBAMATES; Subject Term: CHEMICAL reactors; Subject Term: ENDOTHERMIC reactions; Subject Term: HEAT exchangers; Subject Term: THERMAL management (Electronic packaging); Subject Term: HEAT sinks (Electronics); Author-Supplied Keyword: Ammonium carbamate; Author-Supplied Keyword: Endothermic reaction; Author-Supplied Keyword: Heat exchanger (HEX) reactor; Author-Supplied Keyword: Low-grade heat; Author-Supplied Keyword: Thermal management; NAICS/Industry Codes: 332410 Power Boiler and Heat Exchanger Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2015.07.073 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109502266&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kleiser, Geremy J. AU - Revil-Baudard, Benoit AU - Cazacu, Oana AU - Pasiliao, Crystal L. T1 - Plastic deformation of polycrystalline molybdenum: Experimental data and macroscopic model accounting for its anisotropy and tension–compression asymmetry. JO - International Journal of Solids & Structures JF - International Journal of Solids & Structures Y1 - 2015/12// VL - 75 M3 - Article SP - 287 EP - 298 SN - 00207683 AB - In this paper a systematic experimental investigation of the room-temperature mechanical response of polycrystalline commercially pure molybdenum (Mo) is presented. It was established that the material has ductility in tension at 10 −5 /s and that the failure strain is strongly dependent on the orientation. A specimen taken along the rolling direction sustains large axial strains (20%), while a specimen taken at an angle of 45° to the rolling direction could only sustain 5% strain. It was observed that irrespective of the loading orientation the yield stress in uniaxial compression is larger than in uniaxial tension. While in tension the material has a strong anisotropy in Lankford coefficients, in uniaxial compression it displays weak strain-anisotropy. An elastic-plastic orthotropic model that accounts for all the specificities of the plastic deformation of the material was developed. Validation of the model was done through comparison with data on notched specimens. Quantitative agreement with both global and local strain fields was obtained. In particular, the effect of loading orientation on the response was very well described. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Solids & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASTICITY KW - POLYCRYSTALS KW - MOLYBDENUM KW - ANISOTROPY KW - SYMMETRY (Physics) KW - PHYSICS experiments KW - DUCTILITY KW - Anisotropic yield criterion KW - Molybdenum KW - Plastic anisotropy KW - Quasi-static tests KW - Tension–compression asymmetry N1 - Accession Number: 110149384; Kleiser, Geremy J. 1,2 Revil-Baudard, Benoit 1 Cazacu, Oana 1; Email Address: cazacu@reef.ufl.edu Pasiliao, Crystal L. 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, University of Florida, REEF, 1350 N. Poquito Rd., Shalimar, FL, USA 2: Air Force Research Laboratory, Eglin AFB, FL, USA; Source Info: Dec2015, Vol. 75, p287; Subject Term: PLASTICITY; Subject Term: POLYCRYSTALS; Subject Term: MOLYBDENUM; Subject Term: ANISOTROPY; Subject Term: SYMMETRY (Physics); Subject Term: PHYSICS experiments; Subject Term: DUCTILITY; Author-Supplied Keyword: Anisotropic yield criterion; Author-Supplied Keyword: Molybdenum; Author-Supplied Keyword: Plastic anisotropy; Author-Supplied Keyword: Quasi-static tests; Author-Supplied Keyword: Tension–compression asymmetry; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.ijsolstr.2015.08.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110149384&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grabinski, Christin M. AU - Hussain, Saber M. AU - Mohan Sankaran, R. T1 - Simulations of submicron aerosol deposition at an air–liquid interface for in vitro toxicology. JO - Journal of Aerosol Science JF - Journal of Aerosol Science Y1 - 2015/12// VL - 90 M3 - Article SP - 87 EP - 102 SN - 00218502 AB - Submicron particles released during the lifecycle of nano-enabled products and as a byproduct of air pollution and occupational processes are a potential health risk. Recent advancements to in vitro model systems have been proposed to assess the toxicity of particulate materials resulting from inhalation. The reliability of these models depends on the introduction and deposition of aerosolized particles on cells at an air–liquid interface. However, chamber geometry, gas flow rate, electric field, and other process parameters significantly impact how particles deposit at this interface. Here, we carried out finite element modeling to describe the transport and deposition of submicron aerosolized particles. Simulations were performed using multiphysics software on a typical in vitro exposure chamber design, and results were compared to analytical approximations for deposition efficiency. Deposition experiments were also systematically carried out to validate the modeling predictions. Our results show how deposition depends on various process parameters. To achieve efficient deposition without focusing, the electric field strength and gas flow rate must be balanced; at high gas flow rates, higher electric fields are required to achieve deposition. Further, we find that AC electric fields at the appropriate frequency can increase deposition above DC fields at similar strengths. Overall, the study establishes simulation approaches for the design of in vitro aerosol deposition chambers and relates key process parameters to deposition, which is critical to controlling the dose of submicron aerosols in in vitro toxicology experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerosol Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROSOLS (Sprays) KW - TOXICITY testing -- In vitro KW - AIR pollution -- Environmental aspects KW - COMPUTER simulation KW - HEALTH risk assessment KW - PARTICULATE matter KW - ENVIRONMENTAL aspects KW - Aerosols KW - Deposition KW - Dosimetry KW - In vitro KW - Submicron particles KW - Toxicity N1 - Accession Number: 110559090; Grabinski, Christin M. 1,2; Email Address: christin.grabinski.1.ctr@us.af.mil Hussain, Saber M. 2 Mohan Sankaran, R. 1; Affiliation: 1: Department of Chemical and Biomolecular Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA 2: Molecular Bioeffects Branch, 711th Human Performance Wing, Air Force Research Laboratory, 2729 R Street, Wright Patterson Air Force Base, OH 45433, USA; Source Info: Dec2015, Vol. 90, p87; Subject Term: AEROSOLS (Sprays); Subject Term: TOXICITY testing -- In vitro; Subject Term: AIR pollution -- Environmental aspects; Subject Term: COMPUTER simulation; Subject Term: HEALTH risk assessment; Subject Term: PARTICULATE matter; Subject Term: ENVIRONMENTAL aspects; Author-Supplied Keyword: Aerosols; Author-Supplied Keyword: Deposition; Author-Supplied Keyword: Dosimetry; Author-Supplied Keyword: In vitro; Author-Supplied Keyword: Submicron particles; Author-Supplied Keyword: Toxicity; NAICS/Industry Codes: 923120 Administration of Public Health Programs; NAICS/Industry Codes: 325413 In-Vitro Diagnostic Substance Manufacturing; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.jaerosci.2015.08.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110559090&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Phelan, Thomas J. AU - Abriola, Linda M. AU - Gibson, Jenny L. AU - Smits, Kathleen M. AU - Christ, John A. T1 - Development and application of a screening model for evaluating bioenhanced dissolution in DNAPL source zones. JO - Journal of Contaminant Hydrology JF - Journal of Contaminant Hydrology Y1 - 2015/12// VL - 183 M3 - Article SP - 1 EP - 15 SN - 01697722 AB - In-situ bioremediation, a widely applied treatment technology for source zones contaminated with dense non-aqueous phase liquids (DNAPLs), has proven economical and reasonably efficient for long-term management of contaminated sites. Successful application of this remedial technology, however, requires an understanding of the complex interaction of transport, mass transfer, and biotransformation processes. The bioenhancement factor, which represents the ratio of DNAPL mass transfer under microbially active conditions to that which would occur under abiotic conditions, is commonly used to quantify the effectiveness of a particular bioremediation remedy. To date, little research has been directed towards the development and validation of methods to predict bioenhancement factors under conditions representative of real sites. This work extends an existing, first-order, bioenhancement factor expression to systems with zero-order and Monod kinetics, representative of many source-zone scenarios. The utility of this model for predicting the bioenhancement factor for previously published laboratory and field experiments is evaluated. This evaluation demonstrates the applicability of these simple bioenhancement factors for preliminary experimental design and analysis, and for assessment of dissolution enhancement in ganglia-contaminated source zones. For ease of application, a set of nomographs is presented that graphically depicts the dependence of bioenhancement factor on physicochemical properties. Application of these nomographs is illustrated using data from a well-documented field site. Results suggest that this approach can successfully capture field-scale, as well as column-scale, behavior. Sensitivity analyses reveal that bioenhanced dissolution will critically depend on in-situ biomass concentrations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Contaminant Hydrology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DENSE nonaqueous phase liquids KW - BIOREMEDIATION KW - BIOTRANSFORMATION (Metabolism) KW - MASS transfer KW - BIOMASS KW - GANGLIA KW - DNAPL KW - Enhanced dissolution KW - Modeling KW - PCE KW - Reductive dechlorination KW - Remediation N1 - Accession Number: 111142427; Phelan, Thomas J. 1; Email Address: thomas.phelan@usafa.edu Abriola, Linda M. 2; Email Address: linda.abriola@tufts.edu Gibson, Jenny L. 3; Email Address: jenny.l.gibson4.mil@mail.mil Smits, Kathleen M. 4; Email Address: ksmits@mines.edu Christ, John A. 1; Email Address: john.christ@usafa.edu; Affiliation: 1: United States Air Force Academy, Department of Civil & Environmental Engineering, 2354 Fairchild Dr. STE 6J-159, USAF Academy, CO 80840-6208, United States 2: Tufts University, School of Engineering, 105 Anderson Hall, 200 College Ave., Medford, MA 02155-5530, United States 3: Headquarters United States Air Force, Directorate of Civil Engineers, 1260 Air Force Pentagon, Washington, DC 20330-1030, United States 4: Colorado School of Mines, Department of Civil & Environmental Engineering, 1500 Illinois St., Golden, CO 80401-1887, United States; Source Info: Dec2015, Vol. 183, p1; Subject Term: DENSE nonaqueous phase liquids; Subject Term: BIOREMEDIATION; Subject Term: BIOTRANSFORMATION (Metabolism); Subject Term: MASS transfer; Subject Term: BIOMASS; Subject Term: GANGLIA; Author-Supplied Keyword: DNAPL; Author-Supplied Keyword: Enhanced dissolution; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: PCE; Author-Supplied Keyword: Reductive dechlorination; Author-Supplied Keyword: Remediation; NAICS/Industry Codes: 562910 Remediation Services; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.jconhyd.2015.10.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111142427&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McCollum, Jena AU - Pantoya, Michelle L. AU - Iacono, Scott T. T1 - Catalyzing aluminum particle reactivity with a fluorine oligomer surface coating for energy generating applications. JO - Journal of Fluorine Chemistry JF - Journal of Fluorine Chemistry Y1 - 2015/12// VL - 180 M3 - Article SP - 265 EP - 271 SN - 00221139 AB - Exothermic surface reaction between fluorine from a fluorine-containing polymer and the alumina (Al 2 O 3 ) monolayer shell surrounding aluminum (Al) fuel particles promotes aluminum reactivity. This study investigates the reactivity of Al when coated with a liquid fluorinated oligomer, specifically perfluoropolyether (PFPE). Flame speeds, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and quadruple mass spectrometry (QMS) were performed for Al-PFPE blends with varying Al particle sizes (i.e., 80, 100, 120 and 5500 nm average diameter). The results show that the combustion performance of these blends is highly dependent on the Al 2 O 3 exposed surface area that catalyzes the decomposition of PFPE. As Al particle diameter increases from 80 to 120 nm, the Al-PFPE blends exhibit an increase in flame speeds by 48% and a corresponding increase in surface exothermic reaction identified as a pre-ignition reaction (PIR) that promotes an increase in the calorific output of the main reaction. But, from 120 to 5500 nm Al-PFPE blends, flame speeds decrease by 93%. The higher activation energy and lower Al-Al 2 O 3 particle surface area to volume ratio for micrometer-scale Al fails to significantly catalyze the PIR and results in reduced overall Al reactivity. These results introduce a new and simplified synthesis approach for catalyzing a PIR in Al that strategically promotes overall Al particle reactivity. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Fluorine Chemistry is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE coatings KW - FLUORINE KW - ALUMINUM KW - LIGHT metals KW - HALOGENS KW - Alumina catalysis KW - Aluminum KW - Aluminum fluoride KW - Catalysis KW - Combustion KW - Flame speeds KW - Fluorine KW - Kinetics KW - Reactivity N1 - Accession Number: 111056102; McCollum, Jena 1 Pantoya, Michelle L. 1; Email Address: michelle.pantoya@ttu.edu Iacono, Scott T. 2; Affiliation: 1: Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409, United States 2: Department of Chemistry and Chemistry Research Center, United States Air Force Academy, 2355 Fairchild Drive, Suite 2N225, USAF Academy, CO 80840, United States; Source Info: Dec2015, Vol. 180, p265; Subject Term: SURFACE coatings; Subject Term: FLUORINE; Subject Term: ALUMINUM; Subject Term: LIGHT metals; Subject Term: HALOGENS; Author-Supplied Keyword: Alumina catalysis; Author-Supplied Keyword: Aluminum; Author-Supplied Keyword: Aluminum fluoride; Author-Supplied Keyword: Catalysis; Author-Supplied Keyword: Combustion; Author-Supplied Keyword: Flame speeds; Author-Supplied Keyword: Fluorine; Author-Supplied Keyword: Kinetics; Author-Supplied Keyword: Reactivity; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jfluchem.2015.10.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111056102&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boroumand Azad, Javaneh AU - Rezadad, Imen AU - Peale, Robert E. AU - Cleary, Justin W. AU - Eyink, Kurt T1 - Ultraviolet-Assisted Release of Microelectromechanical Systems From Polyimide Sacrificial Layer. JO - Journal of Microelectromechanical Systems JF - Journal of Microelectromechanical Systems Y1 - 2015/12// VL - 24 IS - 6 M3 - Article SP - 2027 EP - 2032 SN - 10577157 AB - Process heating of microelectromechanical systems (MEMSs) devices hardens polyimide sacrificial layers, complicating the final release and lowering yield for delicate structures. This paper reports ultraviolet (UV)-assisted release, which is demonstrated on an MEMS cantilever fabricated by an eight-mask photolithographic process. A commercial co-developable polyimide ProLift 100 (Brewer Science) sacrificial layer was used. The process subjects the device to multiple heat treatment steps. Both wet chemical etching and dry reactive ion etching were explored. During the former, large sheets of hardened polyimide floated free of the substrate to damage delicate MEMS structures. The latter is typically slow, so that grass appears during long exposures to plasma ions. The solution reported here is UV exposure prior to release. Optical constants of the sacrificial layer material, which were baked to simulate thermal histories during various fabrication steps, were measured to understand the effectiveness of UV exposure. Wet and dry etch rates were measured as a function of UV dose. Finally, the advantages of UV pretreatment were demonstrated during the release of actual MEMS cantilevers. [2015-0193] [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microelectromechanical Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTROMECHANICAL systems KW - POLYIMIDES KW - ULTRAVIOLET radiation KW - ETCHING KW - PLASMA (Ionized gases) KW - HEAT treatment KW - Fabrication KW - Microelectromechanical systems KW - Micromechanical devices KW - Optical imaging KW - Plasmas KW - polyimides KW - release KW - sacrificial layer KW - semiconductor devices KW - Substrates KW - ultraviolet N1 - Accession Number: 111308255; Boroumand Azad, Javaneh 1 Rezadad, Imen 1 Peale, Robert E. 1 Cleary, Justin W. 2 Eyink, Kurt 2; Affiliation: 1: Department of Physics, University of Central Florida, Orlando, FL, USA 2: Wright-Patterson Air Force Base, Air Force Research Laboratory, Dayton, OH, USA; Source Info: Dec2015, Vol. 24 Issue 6, p2027; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: POLYIMIDES; Subject Term: ULTRAVIOLET radiation; Subject Term: ETCHING; Subject Term: PLASMA (Ionized gases); Subject Term: HEAT treatment; Author-Supplied Keyword: Fabrication; Author-Supplied Keyword: Microelectromechanical systems; Author-Supplied Keyword: Micromechanical devices; Author-Supplied Keyword: Optical imaging; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: polyimides; Author-Supplied Keyword: release; Author-Supplied Keyword: sacrificial layer; Author-Supplied Keyword: semiconductor devices; Author-Supplied Keyword: Substrates; Author-Supplied Keyword: ultraviolet; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 6p; Document Type: Article L3 - 10.1109/JMEMS.2015.2463096 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111308255&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jennings, John M. T1 - Writing War: Soldiers Record the Japanese Empire. JO - Journal of Social History JF - Journal of Social History Y1 - 2015///Winter2015 VL - 49 IS - 2 M3 - Book Review SP - 471 EP - 472 PB - Oxford University Press / USA SN - 00224529 KW - SINO-Japanese War, 1937-1945 KW - NONFICTION KW - MOORE, William Aaron KW - WRITING War: Soldiers Record the Japanese Empire (Book) N1 - Accession Number: 111378246; Jennings, John M. 1; Email Address: john.jennings@usafa.edu; Affiliation: 1: United States Air Force Academy; Source Info: Winter2015, Vol. 49 Issue 2, p471; Subject Term: SINO-Japanese War, 1937-1945; Subject Term: NONFICTION; Reviews & Products: WRITING War: Soldiers Record the Japanese Empire (Book); People: MOORE, William Aaron; Number of Pages: 2p; Document Type: Book Review L3 - 10.1093/jsh/shv007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111378246&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, Hyun Jun AU - Fair, Geoff E. AU - Hart, Allison M. AU - Potticary, Santeri A. AU - Usechak, Nicholas G. AU - Corns, Randall G. AU - Hay, Randall S. T1 - Development of polycrystalline yttrium aluminum garnet (YAG) fibers. JO - Journal of the European Ceramic Society JF - Journal of the European Ceramic Society Y1 - 2015/12// VL - 35 IS - 15 M3 - Article SP - 4251 EP - 4258 SN - 09552219 AB - Polycrystalline yttrium–aluminum garnet (YAG) fibers are attractive for high-power lasers and for high-temperature structural materials. Processing methods for <30 μm diameter polycrystalline YAG fibers suitable for single-mode laser operation are presented. The methods use extrusion of classified YAG powders with binders. Extrusion rheologies and rates, and heat-treatment temperatures, times, and environments that yield the most dense, defect-free fibers were explored. Fiber tensile testing, followed by fractography, was used to identify defects and to guide determination of optimal processing conditions. The effects of processing variables on fiber microstructures and properties are discussed. Advantages and disadvantages of processing methods are compared. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the European Ceramic Society is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - YTTRIUM KW - ALUMINUM alloying KW - FERRIMAGNETIC materials KW - POLYCRYSTALS KW - GARNET KW - Extrusion KW - Mechanical strength KW - Polycrystalline KW - Transparency KW - YAG N1 - Accession Number: 109279787; Kim, Hyun Jun 1,2; Email Address: hyun.kim.2.ctr.kr@us.af.mil Fair, Geoff E. 1 Hart, Allison M. 1 Potticary, Santeri A. 1 Usechak, Nicholas G. 3 Corns, Randall G. 1,2 Hay, Randall S. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA 2: UES, Inc., Dayton, OH 45432, USA 3: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Dec2015, Vol. 35 Issue 15, p4251; Subject Term: YTTRIUM; Subject Term: ALUMINUM alloying; Subject Term: FERRIMAGNETIC materials; Subject Term: POLYCRYSTALS; Subject Term: GARNET; Author-Supplied Keyword: Extrusion; Author-Supplied Keyword: Mechanical strength; Author-Supplied Keyword: Polycrystalline; Author-Supplied Keyword: Transparency; Author-Supplied Keyword: YAG; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jeurceramsoc.2015.07.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109279787&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mehta, S.S. AU - Ton, C. AU - Kan, Z. AU - Curtis, J.W. T1 - Vision-based navigation and guidance of a sensorless missile. JO - Journal of the Franklin Institute JF - Journal of the Franklin Institute Y1 - 2015/12// VL - 352 IS - 12 M3 - Article SP - 5569 EP - 5598 SN - 00160032 AB - The objective of this paper is to develop a vision-based terminal guidance system for sensorless missiles. Specifically, monocular vision-based relative navigation and robust control methods are developed for a sensorless missile to intercept a ground target maneuvering with unknown time-varying velocity. A mobile wireless sensor and actor network is considered wherein a moving airborne monocular camera (e.g., attached to an aircraft) provides image measurements of the missile (actor) while another moving monocular camera (e.g., attached to a small UAV) tracks a ground target. The challenge is to express the unknown time-varying target position in the time-varying missile frame using image feedback from cameras moving with unknown trajectories. In a novel relative navigation approach, assuming the knowledge of a single geometric length on the missile, the time-varying target position is obtained by fusing the daisy-chained image measurements of the missile and the target into a homography-based Euclidean reconstruction method. The three-dimensional interception problem is posed in pursuit guidance, proportional navigation, and the proposed hybrid guidance framework. Interestingly, it will be shown that by appropriately defining the error system a single control structure can be maintained across all the above guidance methods. The control problem is formulated in terms of target dynamics in a ‘virtual’ camera mounted on the missile, which enables design of an adaptive nonlinear visual servo controller that compensates for the unknown time-varying missile–target relative velocity. Stability and zero-miss distance analysis of the proposed controller is presented, and a high-fidelity numerical simulation verifies the performance of the guidance laws. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Franklin Institute is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VISUAL optics KW - DEPTH perception KW - NAUTICAL astronomy KW - MONOCULAR vision KW - OPTICAL instruments N1 - Accession Number: 111303959; Mehta, S.S. 1; Email Address: siddhart@ufl.edu Ton, C. 2 Kan, Z. 3 Curtis, J.W. 4; Affiliation: 1: Department of Industrial and Systems Engineering, University of Florida, Research and Engineering Education Facility, Shalimar, FL 32579, USA 2: National Research Council, Air Force Research Laboratory, Eglin AFB, FL 32542, USA 3: Department of Mechanical and Aerospace Engineering, University of Florida, Research and Engineering Education Facility, Shalimar, FL 32579, USA 4: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, USA; Source Info: Dec2015, Vol. 352 Issue 12, p5569; Subject Term: VISUAL optics; Subject Term: DEPTH perception; Subject Term: NAUTICAL astronomy; Subject Term: MONOCULAR vision; Subject Term: OPTICAL instruments; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 446130 Optical Goods Stores; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 30p; Document Type: Article L3 - 10.1016/j.jfranklin.2015.09.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111303959&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pietz, Jesse AU - Royset, Johannes 0. T1 - Optimal Search and Interdiction Planning. JO - Military Operations Research JF - Military Operations Research J1 - Military Operations Research PY - 2015/12// Y1 - 2015/12// VL - 20 IS - 4 M3 - Article SP - 59 EP - 73 SN - 10825983 AB - International law enforcement organizations around the world endeavor to combat high drug-related mortality rates by seizing illicit drugs in transit over international waters. This mission requires effective plans that route multiple aerial searchers and position surface interdictors through large expanses of geographical areas in the presence of highly uncertain estimates about drug smuggler whereabouts, this high uncertainty combined with the challenge of coordinating search and interdiccion make it particularly difficult to conduct mission planning. We present optimal search and interdiction models that address these important challenges and demonstrate how planners can use these models by applying them to a realistic counterdrug operation scenario. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Operations Research is the property of Military Operations Research Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAW enforcement -- Research KW - DRUG traffic -- Prevention N1 - Accession Number: 112241498; Source Information: 2015, Vol. 20 Issue 4, p59; Subject Term: LAW enforcement -- Research; Subject Term: DRUG traffic -- Prevention; Subject Term: ; Number of Pages: 15p; ; Document Type: Article; L3 - 10.5711/1082598320459 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=112241498&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - D Rowenhorst AU - A D Rollett AU - G S Rohrer AU - M Groeber AU - M Jackson AU - P J Konijnenberg AU - M De Graef T1 - Consistent representations of and conversions between 3D rotations. JO - Modelling & Simulation in Materials Science & Engineering JF - Modelling & Simulation in Materials Science & Engineering Y1 - 2015/12// VL - 23 IS - 8 M3 - Article SP - 1 EP - 1 SN - 09650393 AB - In materials science the orientation of a crystal lattice is described by means of a rotation relative to an external reference frame. A number of rotation representations are in use, including Euler angles, rotation matrices, unit quaternions, Rodrigues–Frank vectors and homochoric vectors. Each representation has distinct advantages and disadvantages with respect to the ease of use for calculations and data visualization. It is therefore convenient to be able to easily convert from one representation to another. However, historically, each representation has been implemented using a set of often tacit conventions; separate research groups would implement different sets of conventions, thereby making the comparison of methods and results difficult and confusing. This tutorial article aims to resolve these ambiguities and provide a consistent set of conventions and conversions between common rotational representations, complete with worked examples and a discussion of the trade-offs necessary to resolve all ambiguities. Additionally, an open source Fortran-90 library of conversion routines for the different representations is made available to the community. [ABSTRACT FROM AUTHOR] AB - Copyright of Modelling & Simulation in Materials Science & Engineering is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL lattices KW - EULER angles KW - DATA modeling KW - ELECTRONS -- Backscattering KW - INFORMATION visualization KW - MATERIALS science N1 - Accession Number: 110745693; D Rowenhorst 1; Email Address: David.Rowenhorst@nrl.navy.mil A D Rollett 2; Email Address: rollett@andrew.cmu.edu G S Rohrer 2; Email Address: rohrer@cmu.edu M Groeber 3; Email Address: mike.groeber@gmail.com M Jackson 4; Email Address: mike.jackson@bluequartz.net P J Konijnenberg 5,6; Email Address: p.konijnenberg@mpie.de M De Graef 2,7; Email Address: degraef@cmu.edu; Affiliation: 1: The US Naval Research Laboratory, 4555 Overlook Ave SW, Washington, DC 20375, USA 2: Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA 3: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright Patterson AFB, OH 45433, USA 4: BlueQuartz Software, 400 S. Pioneer Blvd, Springboro, OH 45066, USA 5: Max-Planck-Inst. für Eisenforschung, Max-Planck-Str 1, 40237 Düsseldorf, Germany 6: Bruker-Nano GmbH, Am Studio 2D, 12489, Berlin, Germany 7: Department of Materials Science and Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213-3980, USA; Source Info: Dec2015, Vol. 23 Issue 8, p1; Subject Term: CRYSTAL lattices; Subject Term: EULER angles; Subject Term: DATA modeling; Subject Term: ELECTRONS -- Backscattering; Subject Term: INFORMATION visualization; Subject Term: MATERIALS science; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0965-0393/23/8/083501 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110745693&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 112037387 T1 - Training, Policy and Procedure Development, Protocol Use, Competency, and Skill Tracking. AU - Laksonen Jr, Richard P. AU - Gasiewicz, Nanci K. Y1 - 2015/12// N1 - Accession Number: 112037387. Language: English. Entry Date: In Process. Revision Date: 20160216. Publication Type: Article. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. NLM UID: 0042033. SP - 771 EP - 785 JO - Nursing Clinics of North America JF - Nursing Clinics of North America JA - NURS CLIN NORTH AM VL - 50 IS - 4 CY - Philadelphia, Pennsylvania PB - W B Saunders SN - 0029-6465 AD - Family Medicine, United States Air Force, 5th Medical Operations Squadron, 5th Medical Group, 5th Bomb Wing, Minot Air Force Base, Minot AFB, ND 58705, USA AD - School of Nursing, Northern Michigan University, 1401 Presque Isle Avenue, Marquette, Ml 49855, USA DO - 10.1016/j.cnur.2015.07.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=112037387&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Skrypka, Yaroslav AU - Shumelyuk, Alexandr AU - Odoulov, Serguey AU - Basun, Sergey AU - Evans, Dean T1 - Light induced absorption and optical sensitizing of Sn2P2S6:Sb. JO - Optics Communications JF - Optics Communications Y1 - 2015/12// VL - 356 M3 - Article SP - 208 EP - 211 SN - 00304018 AB - Photorefractive sensitivity of antimony doped Sn 2 P 2 S 6 can be increased at ambient temperature by preexposure of the sample with an intense auxiliary light beam. It is shown that the largest enhancement of sensitivity occurs if the photon energy of preexposure light is close to the crystal bandgap, it decreases gradually with increasing wavelength. The preexposure gives rise also to a pronounced transient light induced absorption which vanishes approximately one order of magnitude faster than the decay of the sensitized state. [ABSTRACT FROM AUTHOR] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHT absorption KW - OPTICAL sensors KW - TIN compounds KW - PHOTOREFRACTIVE materials KW - ANTIMONY KW - ATMOSPHERIC temperature KW - Light induced absorption KW - Optical sensitizing KW - Photorefractive nonlinearity KW - Tin hypothiodiphosphate N1 - Accession Number: 110865256; Skrypka, Yaroslav 1 Shumelyuk, Alexandr 1 Odoulov, Serguey 1; Email Address: odoulov@iop.kiev.ua Basun, Sergey 2 Evans, Dean 2; Affiliation: 1: Institute of Physics, 46, Science ave., Kyiv 03650, Ukraine 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, Dayton, OH 45433, USA; Source Info: Dec2015, Vol. 356, p208; Subject Term: LIGHT absorption; Subject Term: OPTICAL sensors; Subject Term: TIN compounds; Subject Term: PHOTOREFRACTIVE materials; Subject Term: ANTIMONY; Subject Term: ATMOSPHERIC temperature; Author-Supplied Keyword: Light induced absorption; Author-Supplied Keyword: Optical sensitizing; Author-Supplied Keyword: Photorefractive nonlinearity; Author-Supplied Keyword: Tin hypothiodiphosphate; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.optcom.2015.07.077 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110865256&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Panasyuk, George Y. AU - Yerkes, Kirk L. T1 - Modeling the quasistatic energy transport between nanoparticles. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2015/12// VL - 92 IS - 6-A M3 - Article SP - 1 EP - 11 SN - 15393755 AB - We consider phononic energy transport between nanoparticles mediated by a quantum particle. The nanoparticles are considered as thermal reservoirs described by ensembles of finite numbers of harmonic oscillators within the Drude-Ullersma model having, in general, unequal mode spacings Δ1 and Δ2, which amount to different numbers of atoms in the nanoparticles. The quasistatic energy transport between the nanoparticles on the time scale t ~ 1/Δ1,2 is investigated using the generalized quantum Langevin equation. We find that double degeneracy of system's eigenfrequencies, which occurs in the case of identical nanoparticles, is removed when the mode spacings become unequal. The equations describing the dynamics of the averaged eigenmode energies are derived and solved, and the resulting expression for the energy current between the nanoparticles is obtained and explored. Unlike the case when the thermodynamic limit is assumed resulting in time-independent energy current, finite-size effects result in temporal behavior of the energy current that evinces reversibility features combined with decay and possesses peculiarities at time moments t = 2πn/Δ1 + 2πm/Δ2 for non-negative integers n and m. When Δ1,2 0, an expression for the heat current obtained previously under assumption of the thermodynamic limit is reproduced. The energy current between two platinum nanoparticles mediated by a carbon oxide molecule is considered as an application of the developed model. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES -- Research KW - QUASISTATIC processes KW - HARMONIC oscillators KW - CARBON oxides KW - EIGENANALYSIS N1 - Accession Number: 112443345; Panasyuk, George Y. 1; Email Address: george.panasyuk.1.ctr@us.af.mil Yerkes, Kirk L. 1; Affiliation: 1: Aerospace Systems Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: Dec2015, Vol. 92 Issue 6-A, p1; Subject Term: NANOPARTICLES -- Research; Subject Term: QUASISTATIC processes; Subject Term: HARMONIC oscillators; Subject Term: CARBON oxides; Subject Term: EIGENANALYSIS; Number of Pages: 11p; Document Type: Article L3 - 10.1103/PhysRevE.92.062138 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112443345&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mancini, Peter AU - Manar, Field AU - Granlund, Kenneth AU - Ol, Michael V. AU - Jones, Anya R. T1 - Unsteady aerodynamic characteristics of a translating rigid wing at low Reynolds number. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2015/12// VL - 27 IS - 12 M3 - Article SP - 123102-1 EP - 123102-14 PB - American Institute of Physics SN - 10706631 AB - Rectilinearly surging wings are investigated under several different velocity profiles and incidence angles. The primary wing studied here was an aspect ratio 4 rectangular flat plate. Studies on acceleration distance, ranging from 0.125c to 6c, and incidence angles 5°-45° were performed to obtain a better understanding of the force and moment histories during an extended surge motion over several chord-lengths of travel. Flow visualization and particle image velocimetry were performed to show the flow structures responsible for variations in force and moment coefficients. It was determined that the formation and subsequent shedding of a leading edge vortex correspond to oscillations in force coefficients for wings at high angle of attack. Comparing unsteady lift results to static force measurements, it was determined that for cases with large flow separation, even after 14 chords traveled at a constant velocity, the unsteady forces do not converge to the fully developed values. Forces were then broken up into circulatory and non-circulatory components to identify individual contributors to lift. Although itwas observed that the "fast" and "slow" cases produced nearly identical vortex trajectories, circulation measurements confirmed that the faster acceleration case generates more vorticity in the form of a tighter, more coherent vortex and produces significantly more circulation than the slower acceleration case, which is consistent with the difference in force production. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMIC stability KW - REYNOLDS number KW - PARTICLE image velocimetry KW - FLOW visualization KW - ACCELERATION (Mechanics) N1 - Accession Number: 112030834; Mancini, Peter 1; Email Address: pmancini@umd.edu Manar, Field 1; Email Address: fmanar@umd.edu Granlund, Kenneth 2; Email Address: kenneth.granlund.1.ctr@us.af.mil Ol, Michael V. 2; Email Address: michael.ol@us.af.mil Jones, Anya R. 1; Email Address: arjones@umd.edu; Affiliation: 1: Department of Aerospace Engineering, University of Maryland, College Park, Maryland 20740, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 2015, Vol. 27 Issue 12, p123102-1; Subject Term: AERODYNAMIC stability; Subject Term: REYNOLDS number; Subject Term: PARTICLE image velocimetry; Subject Term: FLOW visualization; Subject Term: ACCELERATION (Mechanics); Number of Pages: 14p; Illustrations: 3 Diagrams, 8 Graphs; Document Type: Article L3 - 10.1063/1.4936396 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112030834&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grotelueschen, Mark E. T1 - Never Call Retreat: Theodore Roosevelt and the Great War. JO - Presidential Studies Quarterly JF - Presidential Studies Quarterly Y1 - 2015/12// VL - 45 IS - 4 M3 - Book Review SP - 825 EP - 827 SN - 03604918 KW - WORLD War, 1914-1918 KW - NONFICTION KW - THOMPSON, J. Lee KW - ROOSEVELT, Theodore, 1858-1919 KW - NEVER Call Retreat: Theodore Roosevelt & the Great War (Book) N1 - Accession Number: 110484150; Grotelueschen, Mark E. 1; Affiliation: 1: United States Air Force Academy; Source Info: Dec2015, Vol. 45 Issue 4, p825; Subject Term: WORLD War, 1914-1918; Subject Term: NONFICTION; Reviews & Products: NEVER Call Retreat: Theodore Roosevelt & the Great War (Book); People: THOMPSON, J. Lee; People: ROOSEVELT, Theodore, 1858-1919; Number of Pages: 2p; Document Type: Book Review L3 - 10.1111/psq.12239 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110484150&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - J Z Wu AU - J J Shi AU - F J Baca AU - R Emergo AU - J Wilt AU - T J Haugan T1 - Controlling BaZrO3 nanostructure orientation in YBa2Cu3O films for a three-dimensional pinning landscape. JO - Superconductor Science & Technology JF - Superconductor Science & Technology Y1 - 2015/12// VL - 28 IS - 12 M3 - Article SP - 1 EP - 1 SN - 09532048 AB - The orientation phase diagram of self-assembled BaZrO3 (BZO) nanostructures in c-oriented YBa2Cu3O (YBCO) films on flat and vicinal SrTiO3 substrates was studied experimentally with different dopant concentrations and vicinal angles and theoretically using a micromechanical model based on the theory of elasticity. The organized BZO nanostructure configuration was found to be tunable, between c-axis to ab-plane alignment, by the dopant concentration in the YBCO film matrix strained via lattice mismatched substrates. The correlation between the local strain caused by the BZO doping and the global strain on the matrix provides a unique approach for controllable growth of dopant nanostructure landscapes. In particular, a mixed phase of the c-axis-aligned nanorods and the ab-plane-aligned planar nanostructures can be obtained, leading to a three-dimensional pinning landscape with single impurity doping and much improved Jc in almost all directions of applied magnetic field. [ABSTRACT FROM AUTHOR] AB - Copyright of Superconductor Science & Technology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BARIUM zirconate KW - NANOSTRUCTURED materials -- Molecular structure KW - YTTRIUM compounds KW - PHASE diagrams KW - SUBSTRATES (Materials science) N1 - Accession Number: 110949586; J Z Wu 1; Email Address: jwu@ku.edu J J Shi 1 F J Baca 1 R Emergo 1 J Wilt 1 T J Haugan 2; Affiliation: 1: Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, USA 2: US Air Force Research Laboratory, Dayton, OH 45433, USA; Source Info: Dec2015, Vol. 28 Issue 12, p1; Subject Term: BARIUM zirconate; Subject Term: NANOSTRUCTURED materials -- Molecular structure; Subject Term: YTTRIUM compounds; Subject Term: PHASE diagrams; Subject Term: SUBSTRATES (Materials science); Number of Pages: 1p; Document Type: Article L3 - 10.1088/0953-2048/28/12/125009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110949586&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nunez, O.R. AU - Moreno Tarango, A.J. AU - Murphy, N.R. AU - Phinney, L.C. AU - Hossain, K. AU - Ramana, C.V. T1 - Physical characterization of sputter-deposited amorphous tungsten oxynitride thin films. JO - Thin Solid Films JF - Thin Solid Films Y1 - 2015/12// VL - 596 M3 - Article SP - 160 EP - 166 SN - 00406090 AB - Tungsten oxynitride (W–O–N) thin films were deposited onto silicon (100) and quartz substrates using direct current (DC) sputtering. Composition variations in the W–O–N films were obtained by varying the nitrogen gas flow rate from 0 to 20 sccm, while keeping the total gas flow constant at 40 sccm using 20 sccm of argon with the balance comprised of oxygen. The resulting crystallinity, optical properties, and chemical composition of the DC sputtered W–O–N films were evaluated. All the W–O–N films measured were shown to be amorphous using X-ray diffraction. Spectrophotometry results indicate that the optical parameters, namely, the transmission magnitude and band gap (E g ), are highly dependent on the nitrogen content in the reactive gas mixture. Within the W–O–N system, E g was able to be precisely tailored between 2.9 eV and 1.9 eV, corresponding to fully stoichiometric WO 3 and highly nitrided W–O–N, respectively. Rutherford backscattering spectrometry (RBS) coupled with X-ray photoelectron spectroscopy (XPS) measurements indicate that the composition of the films varies from WO 3 to W–O–N composite oxynitride films. [ABSTRACT FROM AUTHOR] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TUNGSTEN compounds KW - SPUTTER deposition KW - METALLIC glasses KW - THIN films KW - DC sputtering KW - X-ray photoelectron spectroscopy KW - Band gap KW - Composition KW - Sputtering KW - Tungsten oxynitride N1 - Accession Number: 111419361; Nunez, O.R. 1 Moreno Tarango, A.J. 1 Murphy, N.R. 2 Phinney, L.C. 3 Hossain, K. 3 Ramana, C.V. 1; Email Address: rvchintalapalle@utep.edu; Affiliation: 1: Department of Mechanical Engineering, University of Texas at El Paso, El Paso, TX 79968, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base (WPAFB), Dayton, OH 45433, USA 3: Amethyst Research Inc., 123 Case Circle, Ardmore, OK 73401, USA; Source Info: Dec2015, Vol. 596, p160; Subject Term: TUNGSTEN compounds; Subject Term: SPUTTER deposition; Subject Term: METALLIC glasses; Subject Term: THIN films; Subject Term: DC sputtering; Subject Term: X-ray photoelectron spectroscopy; Author-Supplied Keyword: Band gap; Author-Supplied Keyword: Composition; Author-Supplied Keyword: Sputtering; Author-Supplied Keyword: Tungsten oxynitride; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.tsf.2015.08.066 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111419361&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Snyder, Ryan D. AU - Thomas, Evan L. AU - Voevodin, Andrey A. T1 - Material optimization via combinatorial deposition and analysis for thermoelectric thin films. JO - Thin Solid Films JF - Thin Solid Films Y1 - 2015/12// VL - 596 M3 - Article SP - 233 EP - 241 SN - 00406090 AB - This work presents a custom, high-throughput combinatorial approach for the optimization of thermoelectric thin films consisting of materials with complex chemistry and structures (e.g., the layered misfit cobaltite, Ca 3 Fe x Co 4−x O 9 ). Combinatorial thin films with graded compositions are produced on 100 mm Si wafers from multiple target materials using pulsed laser deposition. Film thickness and composition are mapped as a function of wafer location. Crystal structures are determined using x–y mapping XRD analysis with specially designed algorithms for automated peak location and analysis. Thermoelectric properties, specifically the Seebeck coefficient and the electrical resistivity, are screened using a custom designed automated probe system. By combining the rapid synthesis of many compositions and structures simultaneously using combinatorial deposition and automated analytical tools capable of spatial mapping, trends in material performance are shown to be quickly obtained primarily due to the elimination of one-at-a-time synthesis and analysis. The possible approaches for such complex multivalent combinatorial optimization of thin films are identified and discussed. For the Ca 3 Fe x Co 4−x O 9 system presented, variations to the thermoelectric power factor are dominated by changes in the electrical resistivity. Enhancements to the Seebeck coefficient are observed due to the incorporation of Fe into the Ca 3 Fe x Co 4−x O 9 structure; however, this improvement is overshadowed by increases in the electrical resistivity due to variations in film thickness and the presence of secondary phases (Co 3 O 4 and Ca 2 Fe 2 O 5 ) which result from increasing Fe content and off-axis pulsed laser deposition. [ABSTRACT FROM AUTHOR] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOELECTRICITY KW - COMBINATORIAL analysis KW - THIN films KW - ELECTRICAL resistivity KW - CRYSTAL structure KW - CALCIUM compounds KW - Automated analysis KW - Combinatorial KW - Thermoelectrics KW - Thin films N1 - Accession Number: 111419371; Snyder, Ryan D. 1,2 Thomas, Evan L. 1,3; Email Address: evan.thomas.1.ctr@us.af.mil Voevodin, Andrey A. 2,4; Affiliation: 1: Aerospace Systems Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: University of Dayton, Materials Engineering Dept., 300 College Park, Dayton, OH 45469, USA 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Dec2015, Vol. 596, p233; Subject Term: THERMOELECTRICITY; Subject Term: COMBINATORIAL analysis; Subject Term: THIN films; Subject Term: ELECTRICAL resistivity; Subject Term: CRYSTAL structure; Subject Term: CALCIUM compounds; Author-Supplied Keyword: Automated analysis; Author-Supplied Keyword: Combinatorial; Author-Supplied Keyword: Thermoelectrics; Author-Supplied Keyword: Thin films; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.tsf.2015.08.054 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111419371&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2015-00431-001 AN - 2015-00431-001 AU - Magnuson, Matthew Evan AU - Thompson, Garth John AU - Schwarb, Hillary AU - Pan, Wen-Ju AU - McKinley, Andy AU - Schumacher, Eric H. AU - Keilholz, Shella Dawn T1 - Errors on interrupter tasks presented during spatial and verbal working memory performance are linearly linked to large-scale functional network connectivity in high temporal resolution resting state fMRI. JF - Brain Imaging and Behavior JO - Brain Imaging and Behavior JA - Brain Imaging Behav Y1 - 2015/12// VL - 9 IS - 4 SP - 854 EP - 867 CY - Germany PB - Springer SN - 1931-7557 AD - Keilholz, Shella Dawn, Georgia Institute of Technology and Biomedical Engineering, Emory University, 1760 Haygood Dr, HSRB W230, Atlanta, GA, US, 30322 N1 - Accession Number: 2015-00431-001. Partial author list: First Author & Affiliation: Magnuson, Matthew Evan; Georgia Institute of Technology and Biomedical Engineering, Emory University, Atlanta, GA, US. Release Date: 20150112. Correction Date: 20151228. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Errors; Short Term Memory; Task Analysis; Verbal Memory; Biological Neural Networks. Minor Descriptor: Functional Magnetic Resonance Imaging. Classification: Neuropsychology & Neurology (2520). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Tests & Measures: Psychomotor Vigilance Task; Operation Span Task; Symmetry Span Task; APM Raven’s Advanced Progressive Matrices DOI: 10.1037/t10893-000. Methodology: Empirical Study; Quantitative Study. Page Count: 14. Issue Publication Date: Dec, 2015. Publication History: First Posted Date: Jan 7, 2015. Copyright Statement: Springer Science+Business Media New York. 2015. AB - The brain is organized into networks composed of spatially separated anatomical regions exhibiting coherent functional activity over time. Two of these networks (the default mode network, DMN, and the task positive network, TPN) have been implicated in the performance of a number of cognitive tasks. To directly examine the stable relationship between network connectivity and behavioral performance, high temporal resolution functional magnetic resonance imaging (fMRI) data were collected during the resting state, and behavioral data were collected from 15 subjects on different days, exploring verbal working memory, spatial working memory, and fluid intelligence. Sustained attention performance was also evaluated in a task interleaved between resting state scans. Functional connectivity within and between the DMN and TPN was related to performance on these tasks. Decreased TPN resting state connectivity was found to significantly correlate with fewer errors on an interrupter task presented during a spatial working memory paradigm and decreased DMN/TPN anti-correlation was significantly correlated with fewer errors on an interrupter task presented during a verbal working memory paradigm. A trend for increased DMN resting state connectivity to correlate to measures of fluid intelligence was also observed. These results provide additional evidence of the relationship between resting state networks and behavioral performance, and show that such results can be observed with high temporal resolution fMRI. Because cognitive scores and functional connectivity were collected on nonconsecutive days, these results highlight the stability of functional connectivity/cognitive performance coupling. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Cognitive processing KW - High temporal resolution fMRI KW - Resting state KW - Default mode network KW - Task positive network KW - Working memory KW - Interrupter task KW - 2015 KW - Errors KW - Short Term Memory KW - Task Analysis KW - Verbal Memory KW - Biological Neural Networks KW - Functional Magnetic Resonance Imaging KW - 2015 U1 - Sponsor: Georgia Institute of Technology, Air Force Center of Excellence, Bio-nanoenabled Inorganic/Organic Nanostructures and Improved Cognition (BIONIC), US. Recipients: No recipient indicated U1 - Sponsor: US Department of Energy/DHS, US. Other Details: Scholarship and Fellowship Program, administered by the Oak Ridge Institute for Science and Education (ORISE). Recipients: No recipient indicated DO - 10.1007/s11682-014-9347-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-00431-001&site=ehost-live&scope=site UR - shella.keilholz@bme.gatech.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Ard, Shaun G. AU - Shuman, Nicholas S. AU - Martinez Jr., Oscar AU - Brumbach, Michael T. AU - Viggiano, Albert A. T1 - Kinetics of chemi-ionization reactions of lanthanide metals (Nd, Sm) from 150 to 450 K. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2015/11/28/ VL - 143 IS - 20 M3 - Article SP - 1 EP - 9 PB - American Institute of Physics SN - 00219606 AB - The kinetics of chemi-ionization reactions of neodymium and samarium atoms with an oxygen atom to yield a metal monoxide cation and electron were studied using a flow tube apparatus over a temperature range of 150-450 K. Nd reacts efficiently with O, near the hard-sphere collision limit at all temperatures, with a rate constant of 3 × 10-10 cm3 s-1 at 300 K and a slight positive temperature dependence. No chemi-ionization of Nd with N2O was observed, despite the reaction being exothermic. Chemi-ionization of Sm with O is slow, with a rate constant at 300 K determined to be 7 × 10-12 cm³ s-1, although with large uncertainty. The Sm reaction also shows a slightly positive temperature dependence, described by a small activation energy of 60 meV. Although not definitive, the data suggest that excited states of Sm react efficiently whereas ground state Sm reacts inefficiently. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONIZATION (Atomic physics) KW - CHEMICAL kinetics KW - RARE earth metals KW - NEODYMIUM KW - SAMARIUM KW - TEMPERATURE effect N1 - Accession Number: 111400889; Ard, Shaun G. 1 Shuman, Nicholas S. 1 Martinez Jr., Oscar 1 Brumbach, Michael T. 2 Viggiano, Albert A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA 2: Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185, USA; Source Info: 2015, Vol. 143 Issue 20, p1; Subject Term: IONIZATION (Atomic physics); Subject Term: CHEMICAL kinetics; Subject Term: RARE earth metals; Subject Term: NEODYMIUM; Subject Term: SAMARIUM; Subject Term: TEMPERATURE effect; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 9p; Illustrations: 2 Diagrams, 7 Graphs; Document Type: Article L3 - 10.1063/1.4934995 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111400889&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mehmood, Faisal AU - Pachter, Ruth AU - Murphy, Neil R. AU - Johnson, Walter E. T1 - Electronic and optical properties of titanium nitride bulk and surfaces from first principles calculations. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2015/11/21/ VL - 118 IS - 19 M3 - Article SP - 195302-1 EP - 195302-10 PB - American Institute of Physics SN - 00218979 AB - Prediction of the frequency-dependent dielectric function of thin films poses computational challenges, and at the same time experimental characterization by spectroscopic ellipsometry remains difficult to interpret because of changes in stoichiometry and surface morphology, temperature, thickness of the film, or substrate. In this work, we report calculations for titanium nitride (TiN), a promising material for plasmonic applications because of less loss and other practical advantages compared to noble metals. We investigated structural, electronic, and optical properties of stoichiometric bulk TiN, as well as of the TiN(100), TiN(110), and TiN(111) outermost surfaces. Density functional theory (DFT) and many-body GW methods (Green's (G) function-based approximation with screened Coulomb interaction (W)) were used, ranging from G0W0, GW0 to partially self-consistent sc-GW0, as well as the GW-BSE (Bethe-Salpeter equation) and time-dependent DFT (TDDFT) methods for prediction of the optical properties. Structural parameters and the band structure for bulk TiN were shown to be consistent with previous work. Calculated dielectric functions, plasma frequencies, reflectivity, and the electron energy loss spectrum demonstrated consistency with experiment at the GW0-BSE level. Deviations from experimental data are expected due to varying experimental conditions. Comparison of our results to spectroscopic ellipsometry data for realistic nanostructures has shown that although TDDFT may provide a computationally feasible level of theory in evaluation of the dielectric function, application is subject to validation with GW-BSE calculations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM nitride films KW - RESEARCH KW - TITANIUM -- Electrometallurgy KW - ELECTRO-optical effects KW - PRECIOUS metals KW - DIELECTRIC devices N1 - Accession Number: 111086439; Mehmood, Faisal 1,2 Pachter, Ruth 1; Email Address: ruth.pachter@us.af.mil Murphy, Neil R. 1 Johnson, Walter E. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: General Dynamics Information Technology, Inc., Dayton, Ohio 45433, USA; Source Info: 11/21/2015, Vol. 118 Issue 19, p195302-1; Subject Term: TITANIUM nitride films; Subject Term: RESEARCH; Subject Term: TITANIUM -- Electrometallurgy; Subject Term: ELECTRO-optical effects; Subject Term: PRECIOUS metals; Subject Term: DIELECTRIC devices; NAICS/Industry Codes: 212220 Gold and silver ore mining; NAICS/Industry Codes: 212221 Gold Ore Mining; NAICS/Industry Codes: 418920 Mineral, ore and precious metal merchant wholesalers; NAICS/Industry Codes: 423940 Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers; Number of Pages: 10p; Illustrations: 1 Diagram, 2 Charts, 7 Graphs; Document Type: Article L3 - 10.1063/1.4935813 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111086439&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhi-Yuan Lin AU - Shi Liu AU - Steenbergen, Elizabeth H. AU - Yong-Hang Zhang T1 - Influence of carrier localization on minority carrier lifetime in InAs/InAsSb type-II superlattices. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2015/11/16/ VL - 107 IS - 20 M3 - Article SP - 201107-1 EP - 201107-4 PB - American Institute of Physics SN - 00036951 AB - A long minority carrier lifetime of 12.8 μs in a mid-wavelength infrared InAs/InAsSb type-II superlattice is observed at 15K using time-resolved photoluminescence technique. The long carrier lifetime is due to carrier localization, which is confirmed by a 3 meV blue shift of the photoluminescence peak energy and the monotonic decrease of lifetime with increasing temperature from 15K to 50K, along with an increased photoluminescence linewidth below 40 K. In contrast, no carrier localization is observed in a long-wavelength infrared type-II superlattice at the same temperatures. Modeling results show that carrier localization is stronger in shorter period (9.9 nm) mid-wavelength infrared superlattices as compared to longer period (24.2 nm) long-wavelength infrared superlattices, indicating that the carrier localization originates mainly from InAs/InAsSb interface disorder. Although carrier localization enhances carrier lifetimes, it also adversely affects carrier transport, and thus should be carefully considered in the design and evaluation of InAs/InAsSb type-II superlattice photodetectors. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOLUMINESCENCE KW - SUPERLATTICES KW - PHOTODETECTORS KW - MOLECULAR beam epitaxy KW - SEMICONDUCTORS -- Materials N1 - Accession Number: 111178208; Zhi-Yuan Lin 1 Shi Liu 1 Steenbergen, Elizabeth H. 1,2 Yong-Hang Zhang 1; Email Address: yhzhang@asu.edu; Affiliation: 1: Center for Photonics Innovation and School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, 45433 Ohio, USA; Source Info: 2015, Vol. 107 Issue 20, p201107-1; Subject Term: PHOTOLUMINESCENCE; Subject Term: SUPERLATTICES; Subject Term: PHOTODETECTORS; Subject Term: MOLECULAR beam epitaxy; Subject Term: SEMICONDUCTORS -- Materials; Number of Pages: 4p; Illustrations: 1 Diagram, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.4936109 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111178208&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Uddin, Ahsan AU - Glavin, Nicholas AU - Singh, Amol AU - Naguy, Rachel AU - Jespersen, Michael AU - Voevodin, Andrey AU - Koley, Goutam T1 - Mobility enhancement in graphene transistors on low temperature pulsed laser deposited boron nitride. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2015/11/16/ VL - 107 IS - 20 M3 - Article SP - 203110-1 EP - 203110-5 PB - American Institute of Physics SN - 00036951 AB - Low temperature pulsed laser deposited (PLD) ultrathin boron nitride (BN) on SiO2 was investigated as a dielectric for graphene electronics, and a significant enhancement in electrical transport properties of graphene/PLD BN compared to graphene/SiO2 has been observed. Graphene synthesized by chemical vapor deposition and transferred on PLD deposited and annealed BN exhibited up to three times higher field effect mobility compared to graphene on the SiO2 substrate. Graphene field effect transistor devices fabricated on 5 nm BN/SiO2 (300 nm) yielded maximum hole and electron mobility of 4980 and 4200 cm2/V s, respectively. In addition, significant improvement in carrier homogeneity and reduction in extrinsic doping in graphene on BN has been observed. An average Dirac point of 3.5V and residual carrier concentration of 7.65x1011cm-2 was observed for graphene transferred on 5 nm BN at ambient condition. The overall performance improvement on PLD BN can be attributed to dielectric screening of charged impurities, similar crystal structure and phonon modes, and reduced substrate induced doping. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PULSED laser deposition KW - GRAPHENE -- Electric properties KW - BORON nitride KW - SILICA -- Electric properties KW - TRANSISTORS KW - ELECTRON transport KW - CHEMICAL vapor deposition N1 - Accession Number: 111178256; Uddin, Ahsan 1,2; Email Address: uddin2@email.sc.edu Glavin, Nicholas 3,4 Singh, Amol 2 Naguy, Rachel 3 Jespersen, Michael 3 Voevodin, Andrey 3 Koley, Goutam 1,2; Email Address: gkoley@clemson.edu; Affiliation: 1: Department of Electrical and Computer Engineering and Advanced Materials Research Laboratory, Clemson University, Clemson, South Carolina 29634, USA 2: Department of Electrical Engineering, University of South Carolina, Columbia, South Carolina 29208, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 4: School of Mechanical Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA; Source Info: 2015, Vol. 107 Issue 20, p203110-1; Subject Term: PULSED laser deposition; Subject Term: GRAPHENE -- Electric properties; Subject Term: BORON nitride; Subject Term: SILICA -- Electric properties; Subject Term: TRANSISTORS; Subject Term: ELECTRON transport; Subject Term: CHEMICAL vapor deposition; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 5p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.4936191 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111178256&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mahdavi Pajouh, Foad AU - Walteros, Jose L. AU - Boginski, Vladimir AU - Pasiliao, Eduardo L. T1 - Minimum edge blocker dominating set problem. JO - European Journal of Operational Research JF - European Journal of Operational Research Y1 - 2015/11/16/ VL - 247 IS - 1 M3 - Article SP - 16 EP - 26 SN - 03772217 AB - This paper introduces and studies the minimum edge blocker dominating set problem (EBDP), which is formulated as follows. Given a vertex-weighted undirected graph and r > 0, remove a minimum number of edges so that the weight of any dominating set in the remaining graph is at least r . Dominating sets are used in a wide variety of graph-based applications such as the analysis of wireless and social networks. We show that the decision version of EBDP is NP-hard for any fixed r > 0. We present an analytical lower bound for the value of an optimal solution to EBDP and formulate this problem as a linear 0–1 program with a large number of constraints. We also study the convex hull of feasible solutions to EBDP and identify facet-inducing inequalities for this polytope. Furthermore, we develop the first exact algorithm for solving EBDP, which solves the proposed formulation by a branch-and-cut approach where nontrivial constraints are applied in a lazy fashion. Finally, we also provide the computational results obtained by using our approach on a test-bed of randomly generated instances and real-life power-law graphs. [ABSTRACT FROM AUTHOR] AB - Copyright of European Journal of Operational Research is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOCIAL networks KW - DECISION making KW - SET theory KW - GRAPH theory KW - UNDIRECTED graphs KW - POWER law (Mathematics) KW - Branch-and-cut algorithm KW - Critical elements detection KW - Minimum weighted dominating set KW - Network interdiction KW - NP-hardness N1 - Accession Number: 103690113; Mahdavi Pajouh, Foad 1; Email Address: foad.mahdavi@umb.edu; Walteros, Jose L. 2; Email Address: josewalt@buffalo.edu; Boginski, Vladimir 3; Email Address: vb@ufl.edu; Pasiliao, Eduardo L. 4; Email Address: pasiliao@eglin.af.mil; Affiliations: 1: Management Science and Information Systems Department, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, MA 02125, United States; 2: Department of Industrial and Systems Engineering, University at Buffalo, SUNY, 413 Bell Hall, Buffalo, NY 14260, United States; 3: Department of Industrial and Systems Engineering, University of Florida, 303 Weil Hall, Gainesville, FL 32611, United States; 4: Munitions Directorate, Air Force Research Laboratory, 101 W. Eglin Blvd, Eglin AFB, FL 32542, United States; Issue Info: Nov2015, Vol. 247 Issue 1, p16; Thesaurus Term: SOCIAL networks; Thesaurus Term: DECISION making; Subject Term: SET theory; Subject Term: GRAPH theory; Subject Term: UNDIRECTED graphs; Subject Term: POWER law (Mathematics); Author-Supplied Keyword: Branch-and-cut algorithm; Author-Supplied Keyword: Critical elements detection; Author-Supplied Keyword: Minimum weighted dominating set; Author-Supplied Keyword: Network interdiction; Author-Supplied Keyword: NP-hardness; NAICS/Industry Codes: 624190 Other Individual and Family Services; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ejor.2015.05.037 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=103690113&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Senkov, O.N. AU - Semiatin, S.L. T1 - Microstructure and properties of a refractory high-entropy alloy after cold working. JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2015/11/15/ VL - 649 M3 - Article SP - 1110 EP - 1123 SN - 09258388 AB - A refractory high-entropy alloy HfNbTaTiZr was successfully rolled at room temperature up to 86.4% reduction in thickness (true thickness strain is −2.3). This represents the first successful attempt to cold roll a HEA with a BCC crystal structure. The microstructure and properties of the rolled sheets were determined in the as-rolled condition and after annealing at 800 °C, 1000 °C, and 1200 °C. Cold rolling resulted in extensive grain elongation, formation of deformation bands within the grains, and development of crystallographic textures that depended on the rolling reduction. The 86.4% cold-rolled sheet had true tensile stress of 1295 MPa and tensile ductility of 4.7%. After annealing at 1000 °C and 1200 °C, complete recrystallization of the cold-rolled sheet occurred. After annealing at 1000 °C, the true tensile stress and ductility of the sheet were 1262 MPa and 9.7%, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HAFNIUM compounds KW - METALS -- Microstructure KW - METALS -- Cold working KW - EFFECT of temperature on metals KW - CHEMICAL reduction KW - ROLLING (Metalwork) KW - Annealing KW - Cold rolling KW - High-entropy alloy KW - Microstructure KW - Phase composition KW - Refractory alloy KW - Texture N1 - Accession Number: 109356662; Senkov, O.N. 1,2; Email Address: oleg.senkov.ctr@us.af.mil Semiatin, S.L. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright-Patterson Air Force Base, OH 45433, USA 2: UES, Inc., Dayton, OH 45432, USA; Source Info: Nov2015, Vol. 649, p1110; Subject Term: HAFNIUM compounds; Subject Term: METALS -- Microstructure; Subject Term: METALS -- Cold working; Subject Term: EFFECT of temperature on metals; Subject Term: CHEMICAL reduction; Subject Term: ROLLING (Metalwork); Author-Supplied Keyword: Annealing; Author-Supplied Keyword: Cold rolling; Author-Supplied Keyword: High-entropy alloy; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Phase composition; Author-Supplied Keyword: Refractory alloy; Author-Supplied Keyword: Texture; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331410 Nonferrous Metal (except Aluminum) Smelting and Refining; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331491 Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331315 Aluminum Sheet, Plate, and Foil Manufacturing; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331221 Rolled Steel Shape Manufacturing; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.jallcom.2015.07.209 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109356662&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bertrand, D. AU - Sabelkin, V. AU - Zawada, L. AU - Mall, S. T1 - Fatigue behavior of sylramic-iBN/BN/CVI SiC ceramic matrix composite in combustion environment. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2015/11/15/ VL - 50 IS - 22 M3 - Article SP - 7437 EP - 7447 PB - Springer Science & Business Media B.V. SN - 00222461 AB - Fatigue behavior of Sylramic-iBN/BN/CVI SiC CMC was investigated under tension-tension fatigue using a test facility which simulated simultaneously both loading and combustion conditions of hot-section components of gas turbine engines. Combustion environment was created using a high-velocity oxygen fuel gun to impinge combustion flame on one side of specimen subjected to fatigue to simulate the real situation. The flame-impinged surface of specimen was heated to average temperature of 1250, 1350, or 1480 °C. Ultimate tensile strength of CMC was about 270 MPa at 1480 °C under combustion environment. Fatigue life diagram was established at stress ratio of 0.1 and frequency of 1 Hz. The CMC survived up to 25 h at 46 and 33 % of ultimate tensile strength under combustion at 1250 and 1350 °C, respectively. However, it could not survive 25 h at 1480 °C under combustion fatigue environment even with no stress on the specimen due to degradation/erosion of the material. Microscopic analysis of fracture surface showed oxidation of BN interface, which was more on flame side than other side. Fracture surfaces showed oxide formation over matrix, fibers, and/or fiber/matrix interphase causing embrittlement and thereafter failure of CMC. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Fatigue KW - BORON nitride KW - SILICON carbide KW - SURFACE tension KW - COMBUSTION KW - CERAMIC materials KW - COMPOSITE materials N1 - Accession Number: 109136994; Bertrand, D. Sabelkin, V. 1 Zawada, L. 2 Mall, S. 1; Email Address: Shankar.Mall@afit.edu; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology (AFIT/ENY), Wright-Patterson AFB, Bldg. 640, 2950 Hobson Way Dayton 45433-7765 USA 2: Materials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Dayton 45433-7817 USA; Source Info: Nov2015, Vol. 50 Issue 22, p7437; Subject Term: METALS -- Fatigue; Subject Term: BORON nitride; Subject Term: SILICON carbide; Subject Term: SURFACE tension; Subject Term: COMBUSTION; Subject Term: CERAMIC materials; Subject Term: COMPOSITE materials; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 11p; Illustrations: 1 Color Photograph, 8 Diagrams, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1007/s10853-015-9302-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109136994&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, A. Matthew AU - Alsing, P.M. AU - Lott, G.E. AU - Fanto, M.L. T1 - Translating non-trivial algorithms from the circuit model to the measurement-based quantum computing model. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2015/11/15/ VL - 62 IS - 20 M3 - Article SP - 1746 EP - 1754 SN - 09500340 AB - We provide a set of prescriptions for implementing a circuit model algorithm as measurement-based quantum computing algorithm via a large discrete cluster state constructed sequentially, from qubits implemented as single photons. We describe a large optical discrete graph state capable of searching logical 4 and 8 element lists as an example. To do so we have developed several prescriptions based on analytic evaluation of the evolution of discrete cluster states and graph state equations. We describe the cluster state as a sequence of repeated entanglement and measurement steps using a small number of single photons for each step. These prescriptions can be generalized to implement any logical circuit model operation with appropriate single-photon measurements and feed forward error corrections. Such a cluster state is not guaranteed to be optimal (i.e. minimum number of photons, measurements, run time). [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - QUANTUM computing KW - GENERALIZATION KW - PHOTONS KW - QUANTUM optics KW - discrete cluster state KW - measurement based KW - quantum algorithm KW - quantum computing KW - quantum optics KW - single photon N1 - Accession Number: 110221449; Smith, A. Matthew 1,2 Alsing, P.M. 1 Lott, G.E. 1 Fanto, M.L. 1; Affiliation: 1: Air Force Research Laboratory, Information Directorate, Rome, NY, USA. 2: Oak Ridge National Laboratory, QIS Group, Oak Ridge, TN, USA.; Source Info: Nov2015, Vol. 62 Issue 20, p1746; Subject Term: ALGORITHMS; Subject Term: QUANTUM computing; Subject Term: GENERALIZATION; Subject Term: PHOTONS; Subject Term: QUANTUM optics; Author-Supplied Keyword: discrete cluster state; Author-Supplied Keyword: measurement based; Author-Supplied Keyword: quantum algorithm; Author-Supplied Keyword: quantum computing; Author-Supplied Keyword: quantum optics; Author-Supplied Keyword: single photon; Number of Pages: 9p; Document Type: Article L3 - 10.1080/09500340.2015.1014437 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110221449&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nader, Nima AU - Vangala, Shivashankar AU - Hendrickson, Joshua R. AU - Leedy, Kevin D. AU - Look, David C. AU - Junpeng Guo AU - Cleary, Justin W. T1 - Investigation of plasmon resonance tunneling through subwavelength hole arrays in highly doped conductive ZnO films. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2015/11/14/ VL - 118 IS - 18 M3 - Article SP - 173106-1 EP - 173106-6 PB - American Institute of Physics SN - 00218979 AB - Experimental results pertaining to plasmon resonance tunneling through a highly conductive zinc oxide (ZnO) layer with subwavelength hole-arrays is investigated in the mid-infrared regime. Gallium-doped ZnO layers are pulsed-laser deposited on a silicon wafer. The ZnO has metallic optical properties with a bulk plasma frequency of 214 THz, which is equivalent to a free space wavelength of 1.4 μm. Hole arrays with different periods and hole shapes are fabricated via a standard photolithography process. Resonant mode tunneling characteristics are experimentally studied for different incident angles and compared with surface plasmon theoretical calculations and finite-difference time-domain simulations. Transmission peaks, higher than the baseline predicted by diffraction theory, are observed in each of the samples at wavelengths that correspond to the excitation of surface plasmon modes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE plasmon resonance KW - ZINC oxide films KW - WAVELENGTHS KW - OPTICAL properties KW - PHOTOLITHOGRAPHY N1 - Accession Number: 110836836; Nader, Nima 1,2; Email Address: nima.nader@nist.gov Vangala, Shivashankar 1,2 Hendrickson, Joshua R. 2 Leedy, Kevin D. 2 Look, David C. 2,3,4 Junpeng Guo 5 Cleary, Justin W. 2; Affiliation: 1: Solid State Scientific Corporation, 12 Simon St., Nashua, New Hampshire 03060, USA 2: Air Force Research Laboratory, Sensors Directorate, 2241 Avionics Circle, Wright Patterson AFB, Ohio 45433, USA 3: Wyle Laboratories, Inc., 2601 Mission Point Blvd., Suite 300, Dayton, Ohio 45435, USA 4: Semiconductor Research Center, Wright State University, Dayton, Ohio 45435, USA 5: Department of Electrical and Computer Engineering, University of Alabama in Huntsville, 301 Sparkman Drive, Huntsville, Alabama 35899, USA; Source Info: 2015, Vol. 118 Issue 18, p173106-1; Subject Term: SURFACE plasmon resonance; Subject Term: ZINC oxide films; Subject Term: WAVELENGTHS; Subject Term: OPTICAL properties; Subject Term: PHOTOLITHOGRAPHY; Number of Pages: 6p; Illustrations: 2 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.4934875 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110836836&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhang, Xu A. AU - Bagal, Abhijeet AU - Dandley, Erinn C. AU - Zhao, Junjie AU - Oldham, Christopher J. AU - Wu, Bae-Ian AU - Parsons, Gregory N. AU - Chang, Chih-Hao T1 - Ordered 3D Thin-Shell Nanolattice Materials with Near-Unity Refractive Indices. JO - Advanced Functional Materials JF - Advanced Functional Materials Y1 - 2015/11/11/ VL - 25 IS - 42 M3 - Article SP - 6644 EP - 6649 SN - 1616301X AB - The refractive indices of naturally occurring materials are limited, and there exists an index gap between indices of air and available solid materials. With many photonics and electronics applications, there has been considerable effort in creating artificial materials with optical and dielectric properties similar to air while simultaneously being mechanically stable to bear load. Here, a class of ordered nanolattice materials consisting of periodic thin-shell structures with near-unity refractive index and high stiffness is demonstrated. Using a combination of 3D nanolithography and atomic layer deposition, these ordered nanostructured materials have reduced optical scattering and improved mechanical stability compared to existing randomly porous materials. Using ZnO and Al2O3 as the building materials, refractive indices from 1.3 down to 1.025 are achieved. The experimental data can be accurately described by Maxwell Garnett effective media theory, which can provide a guide for index design. The demonstrated low-index, low-scattering, and high-stiffness materials can serve as high-quality optical films in multilayer photonic structures, waveguides, resonators, and ultra-low- k dielectrics. [ABSTRACT FROM AUTHOR] AB - Copyright of Advanced Functional Materials is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REFRACTION (Optics) KW - RESEARCH KW - PHOTONICS KW - ELECTRONICS research KW - NANOLITHOGRAPHY KW - ATOMIC layer deposition KW - POROUS materials KW - 3D periodic nanostructures KW - atomic layer deposition KW - low-index materials KW - nanolithography KW - porous materials N1 - Accession Number: 111071497; Zhang, Xu A. 1 Bagal, Abhijeet 1 Dandley, Erinn C. 2 Zhao, Junjie 2 Oldham, Christopher J. 2 Wu, Bae-Ian 3 Parsons, Gregory N. 2 Chang, Chih-Hao 1; Affiliation: 1: Department of Mechanical and Aerospace Engineering, North Carolina State University 2: Department of Chemical and Bimolecular Engineering, North Carolina State University 3: Air Force Research Laboratory; Source Info: Nov2015, Vol. 25 Issue 42, p6644; Subject Term: REFRACTION (Optics); Subject Term: RESEARCH; Subject Term: PHOTONICS; Subject Term: ELECTRONICS research; Subject Term: NANOLITHOGRAPHY; Subject Term: ATOMIC layer deposition; Subject Term: POROUS materials; Author-Supplied Keyword: 3D periodic nanostructures; Author-Supplied Keyword: atomic layer deposition; Author-Supplied Keyword: low-index materials; Author-Supplied Keyword: nanolithography; Author-Supplied Keyword: porous materials; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 6p; Document Type: Article L3 - 10.1002/adfm.201502854 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111071497&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dyakonov, G.S. AU - Zemtsova, E. AU - Mironov, S. AU - Semenova, I.P. AU - Valiev, R.Z. AU - Semiatin, S.L. T1 - An EBSD investigation of ultrafine-grain titanium for biomedical applications. JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2015/11/11/ VL - 648 M3 - Article SP - 305 EP - 310 SN - 09215093 AB - High-resolution electron backscatter diffraction (EBSD) was used to examine the grain structure in long rods of ultrafine-grain (UFG) commercial-purity titanium produced for medical implants. The UFG material was obtained by equal channel angular pressing (ECAP) using a Conform scheme followed by rod drawing. The microstructure was found to be bimodal consisting of relatively coarse elongated grains containing well-developed substructure and ultrafine grains. The mean grain size was ~0.3 μm, and the fraction of high-angle boundaries was ~45%. The material had a strong < 10 1 ¯ 0 > -fiber texture. An analysis of the microstructure–properties relationship showed that the increase in material strength developed during severe plastic deformation resulted from grain refinement and substructure evolution in comparable measure. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL grain boundaries KW - TITANIUM KW - BIOMEDICAL materials KW - ELECTRONS -- Backscattering KW - CRYSTAL structure KW - METALS -- Microstructure KW - EBSD KW - Equal channel angular processing KW - Grain refinement KW - Nanostructured materials KW - Titanium alloys N1 - Accession Number: 110385666; Dyakonov, G.S. 1,2 Zemtsova, E. 2,3 Mironov, S. 4; Email Address: smironov@material.tohoku.ac.jp Semenova, I.P. 1 Valiev, R.Z. 2 Semiatin, S.L. 5; Affiliation: 1: Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, 12K Marx St., Ufa 450000, Russia 2: Laboratory for Mechanics of Bulk Nanostructured Materials, Saint Petersburg State University, 26 Universitetsky Prospect, 198504 Peterhof, Saint Petersburg, Russia 3: Institute of Chemistry, Saint Petersburg State University, 26 Universitetsky Prospect, Saint Petersburg 198504, Russia 4: Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Sendai 980-8579, Japan 5: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Nov2015, Vol. 648, p305; Subject Term: CRYSTAL grain boundaries; Subject Term: TITANIUM; Subject Term: BIOMEDICAL materials; Subject Term: ELECTRONS -- Backscattering; Subject Term: CRYSTAL structure; Subject Term: METALS -- Microstructure; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: Equal channel angular processing; Author-Supplied Keyword: Grain refinement; Author-Supplied Keyword: Nanostructured materials; Author-Supplied Keyword: Titanium alloys; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.msea.2015.09.080 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110385666&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Konkova, T. AU - Mironov, S. AU - Korznikov, A. AU - Korznikova, G. AU - Myshlyaev, M.M. AU - Semiatin, S.L. T1 - Annealing behavior of cryogenically-rolled Cu–30Zn brass. JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2015/11/05/ VL - 648 M3 - Article SP - 858 EP - 863 SN - 09258388 AB - The static-annealing behavior of cryogenically-rolled Cu–30Zn brass over a wide range of temperature (100–900 °C) was established. Between 300 and 400 °C, microstructure and texture evolution were dominated by discontinuous recrystallization. At temperatures of 500 °C and higher, annealing was interpreted in terms of normal grain growth. The recrystallized microstructure developed at 400 °C was ultrafine with a mean grain size of 0.8 μm, fraction of high-angle boundaries of 90 pct., and a weak crystallographic texture. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANNEALING of metals KW - CRYOGENICS KW - ROLLING (Metalwork) KW - BRASS KW - MICROSTRUCTURE KW - SURFACE texture KW - Metals and alloys KW - Microstructure KW - Nanofabrications KW - Nanostructured materials KW - Scanning electron microscopy N1 - Accession Number: 109333344; Konkova, T. 1 Mironov, S. 1,2; Email Address: S-72@mail.ru Korznikov, A. 1,3 Korznikova, G. 1 Myshlyaev, M.M. 4,5 Semiatin, S.L. 6; Affiliation: 1: Institute for Metals Superplasticity Problems, Russian Academy of Science, 39 Khalturin Str., Ufa, 450001, Russia 2: Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Sendai, 980-8579, Japan 3: National Research Tomsk State University, 36 Lenina av., Tomsk, 634050, Russia 4: Baikov Institute of Metallurgy and Material Science, Russian Academy of Science, 49 Lenin-av., Moscow, 119991, Russia 5: Institute of Solid State Physics, Russian Academy of Sciences, 2 Academic Osypian Str., Chernogolovka, Moscow oblast, 142432 Russia 6: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, OH, 45433-7817, USA; Source Info: 11/5/2015, Vol. 648, p858; Subject Term: ANNEALING of metals; Subject Term: CRYOGENICS; Subject Term: ROLLING (Metalwork); Subject Term: BRASS; Subject Term: MICROSTRUCTURE; Subject Term: SURFACE texture; Author-Supplied Keyword: Metals and alloys; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Nanofabrications; Author-Supplied Keyword: Nanostructured materials; Author-Supplied Keyword: Scanning electron microscopy; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 331491 Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331315 Aluminum Sheet, Plate, and Foil Manufacturing; NAICS/Industry Codes: 331410 Nonferrous Metal (except Aluminum) Smelting and Refining; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331221 Rolled Steel Shape Manufacturing; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jallcom.2015.05.287 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109333344&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chun-Hu Chen AU - Njagi, Eric C. AU - Sheng-Yu Chen AU - Horvath, Dayton T. AU - Linping Xu AU - Morey, Aimee AU - Mackin, Charles AU - Joesten, Raymond AU - Suib, Steven L. T1 - Structural Distortion of Molybdenum-Doped Manganese Oxide Octahedral Molecular Sieves for Enhanced Catalytic Performance. JO - Inorganic Chemistry JF - Inorganic Chemistry Y1 - 2015/11/02/ VL - 54 IS - 21 M3 - Article SP - 10163 EP - 10171 SN - 00201669 AB - Due to the excellent catalytic performance of manganese oxide (K-OMS-2) in a wide range of applications, incorporation of various dopants has been commonly applied for K-OMS-2 to acquire additional functionality or activities. However, the understanding of its substitution mechanism with respect to the catalytic performance of doped K-OMS-2 materials remains unclear. Here we present the structural distortion (from tetragonal to monoclinic cell) and morphological evolution in K-OMS-2 materials by doping hexavalent molybdenum. With a Mo-to-Mn ratio of 1:20 (R-1:20) in the preparation, the resultant monoclinic K-OMS-2 shows a small equidimensional particle size (∼15 nm), a high surface area of 213 m²g–1, and greatly improved catalytic activity toward CO oxidation with lower onset temperatures (40 °C) than that of pristine K-OMS-2 (above 130 °C). HR-TEM analyses reveal direct evidence of structural distortion on the cross-section of 2 × 2 tunnels with the absence of 4-fold rotation symmetry expected for a tetragonal cell, which are indexed using a monoclinic cell. Our results suggest that substitution of Mo6+ for Mn3+ (rather than Mn4+) coupled with the vacancy generation results in a distorted structure and unique morphology. The weakened Mn–O bonds and Mn vacancies associated with the structural distortion may be mainly responsible for the enhanced catalytic activity of monoclinic K-OMS-2 instead of dopant species. [ABSTRACT FROM AUTHOR] AB - Copyright of Inorganic Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MANGANESE oxides KW - OCTAHEDRAL molecules KW - MOLECULAR sieves KW - CATALYTIC activity KW - MONOCLINIC crystal system N1 - Accession Number: 110840420; Chun-Hu Chen 1,2 Njagi, Eric C. 1 Sheng-Yu Chen 1 Horvath, Dayton T. 1 Linping Xu 1 Morey, Aimee 1,3 Mackin, Charles 1 Joesten, Raymond 1 Suib, Steven L. 1; Email Address: steven.suib@uconn.edu; Affiliation: 1: Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States 2: Department of Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan 80424, United States 3: Department of Chemistry, United States Air Force Academy, Colorado Springs, Colorado 80840, United States; Source Info: 11/2/2015, Vol. 54 Issue 21, p10163; Subject Term: MANGANESE oxides; Subject Term: OCTAHEDRAL molecules; Subject Term: MOLECULAR sieves; Subject Term: CATALYTIC activity; Subject Term: MONOCLINIC crystal system; Number of Pages: 9p; Document Type: Article L3 - 10.1021/acs.inorgchem.5b00906 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110840420&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kuether, Robert J. AU - Deaner, Brandon J. AU - Hollkamp, Joseph J. AU - Allen, Matthew S. T1 - Evaluation of Geometrically Nonlinear Reduced-Order Models with Nonlinear Normal Modes. JO - AIAA Journal JF - AIAA Journal Y1 - 2015/11// VL - 53 IS - 11 M3 - Article SP - 3273 EP - 3285 SN - 00011452 AB - Several reduced-order modeling strategies have been developed to create low-order models of geometrically nonlinear structures from detailed finite element models, allowing one to compute the dynamic response of the structure at a dramatically reduced cost. However, the parameters of these reduced-order models are estimated by applying a series of static loads to the finite element model, and the quality of the reduced-order model can be highly sensitive to the amplitudes of the static load cases used and to the type/number of modes used in the basis. This paper proposes to combine reduced-order modeling and numerical continuation to estimate the nonlinear normal modes of geometrically nonlinear finite element models. Not only does this make it possible to compute the nonlinear normal modes far more quickly than existing approaches, but the nonlinear normal modes are also shown to be an excellent metric by which the quality of the reduced-order model can be assessed. Hence, the second contribution of this work is to demonstrate how nonlinear normal modes can be used as a metric by which nonlinear reduced-order models can be compared. Various reduced-order models with hardening nonlinearities are compared for two different structures to demonstrate these concepts: a clamped-clamped beam model, and a more complicated finite element model of an exhaust panel cover. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REDUCED-order models KW - RESEARCH KW - FINITE element method KW - GIRDERS KW - DEAD loads (Mechanics) KW - STRUCTURAL panels (Construction) N1 - Accession Number: 110966917; Kuether, Robert J. 1,2; Email Address: rkuether@wisc.edu Deaner, Brandon J. 3; Email Address: Brandon.Deaner@mercmarine.com Hollkamp, Joseph J. 4,5; Email Address: Joseph.Hollkamp@us.af.mil Allen, Matthew S. 1,6; Email Address: msallen@engr.wisc.edu; Affiliation: 1: University of Wisconsin-Madison, Madison, Wisconsin 53706-1609 2: Graduate Research Assistant, Engineering Physics Department, 534 Engineering Research Building, 1500 Engineering Drive 3: Mercury Marine, Fond du Lac, Wisconsin 54936 4: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 5: Senior Aerospace Engineer, Structural Sciences Center, AFRL/RQHF, 2790 D Street, Building 65 6: Associate Professor, Engineering Physics Department, 535 Engineering Research Building, 1500 Engineering Drive; Source Info: Nov2015, Vol. 53 Issue 11, p3273; Subject Term: REDUCED-order models; Subject Term: RESEARCH; Subject Term: FINITE element method; Subject Term: GIRDERS; Subject Term: DEAD loads (Mechanics); Subject Term: STRUCTURAL panels (Construction); Number of Pages: 13p; Document Type: Article L3 - 10.2514/1.J053838 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110966917&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Danhong Huang AU - Godfrey Gumbs AU - Yonatan Abranyos AU - Pepper, Michael AU - Kumar, Sanjeev T1 - Quantum ballistic transport by interacting two-electron states in quasi-one-dimensional channels. JO - AIP Advances JF - AIP Advances Y1 - 2015/11// VL - 5 IS - 11 M3 - Article SP - 1 EP - 16 SN - 21583226 AB - For quantum ballistic transport of electrons through a short conduction channel, the role of Coulomb interaction may significantly modify the energy levels of two-electron states at low temperatures as the channel becomes wide. In this regime, the Coulomb effect on the two-electron states is calculated and found to lead to four split energy levels, including two anticrossing-level and two crossing-level states. Moreover, due to the interplay of anticrossing and crossing effects, our calculations reveal that the ground two-electron state will switch from one anticrossing state (strong confinement) to a crossing state (intermediate confinement) as the channel width gradually increases and then back to the original anticrossing state (weak confinement) as the channel width becomes larger than a threshold value. This switching behavior leaves a footprint in the ballistic conductance as well as in the diffusion thermoelectric power of electrons. Such a switching is related to the triple spin degeneracy as well as to the Coulomb repulsion in the central region of the channel, which separates two electrons away and pushes them to different channel edges. The conductance reoccurrence region expands from the weak to the intermediate confinement regime with increasing electron density. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Advances is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BALLISTIC electrons KW - ELECTRON energy states KW - ONE-dimensional conductors N1 - Accession Number: 111550798; Danhong Huang 1,2 Godfrey Gumbs 2 Yonatan Abranyos 3 Pepper, Michael 4,5 Kumar, Sanjeev 4,5; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA 2: Center for High Technology Materials, University of New Mexico, 1313 Goddard St SE, Albuquerque, New Mexico 87106, USA 3: Department of Physics and Astronomy, Hunter College of the City University of New York, 695 Park Avenue, New York, New York 10065, USA 4: Department of Electronic and Electrical Engineering, University College London, London, WC1E 7JE, United Kingdom 5: London Centre for Nanotechnology, 17-19 Gordon Street, London, WC1H 0AH, United Kingdom; Source Info: 2015, Vol. 5 Issue 11, p1; Subject Term: BALLISTIC electrons; Subject Term: ELECTRON energy states; Subject Term: ONE-dimensional conductors; Number of Pages: 16p; Document Type: Article L3 - 10.1063/1.4936187 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111550798&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chao, Pane-Chane AU - Chu, Kenneth AU - Creamer, Carlton AU - Diaz, Jose AU - Yurovchak, Tom AU - Shur, Michael AU - Kallaher, Ray AU - McGray, Craig AU - Via, Glen David AU - Blevins, John D. T1 - Low-Temperature Bonded GaN-on-Diamond HEMTs With 11 W/mm Output Power at 10 GHz. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices Y1 - 2015/11// VL - 62 IS - 11 M3 - Article SP - 3658 EP - 3664 SN - 00189383 AB - We report recent progress on GaN-on-diamond high electron mobility transistors (HEMTs) fabricated using a low-temperature device-transfer process. The devices were first fabricated on a GaN-on-SiC epitaxial wafer and were subsequently separated from the SiC and bonded onto a high-thermal-conductivity diamond substrate at low temperature. The resulting 12 \times 50~\mu \textm GaN-on-diamond HEMTs demonstrated the state-of-the-art electrical characteristics, including a maximum drain current density of 1.2 A/mm and a peak transconductance of 390 mS/mm. CW load-pull measurements at 10 GHz yielded an RF output power density of 11 W/mm with 51% associated power-added efficiency. Device measurements show that the GaN-on-diamond devices maintained slightly lower channel temperatures than their GaN-on-SiC counterparts while delivering 3.6 times higher RF power within the same active area. These results demonstrate that the GaN device-transfer process is capable of preserving intrinsic GaN-on-SiC transistor electrical performance while taking advantage of the excellent thermal properties of diamond substrates. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH electron mobility transistors KW - DIAMONDS KW - TEMPERATURE measurements KW - THERMAL conductivity KW - SUBSTRATES (Materials science) KW - Coefficient of thermal expansion (CTE) KW - Diamonds KW - ELO KW - Gallium nitride KW - GaN-on-diamond KW - GaN-on-Si KW - GaN-on-SiC KW - HEMTs KW - high electron mobility transistors (HEMTs) KW - high thermal conductivity diamond KW - infrared (IR) imaging KW - Logic gates KW - low-temperature bonding KW - MODFETs KW - pulsed I-V KW - Radio frequency KW - RF power capability KW - RF power density KW - Substrates KW - thermal boundary resistance (TBR) KW - thermal modeling KW - thermal resistance N1 - Accession Number: 110652341; Chao, Pane-Chane 1 Chu, Kenneth 1 Creamer, Carlton 1 Diaz, Jose 1 Yurovchak, Tom 1 Shur, Michael 2 Kallaher, Ray 3 McGray, Craig 3 Via, Glen David 4 Blevins, John D. 4; Affiliation: 1: , BAE Systems, Nashua, NH, USA 2: , Rensselaer Polytechnic Institute, Troy, NY, USA 3: , Modern Microsystems, Inc., Silver Spring, MD, USA 4: Air Force Research Laboratory, RYDD, Dayton, OH, USA; Source Info: Nov2015, Vol. 62 Issue 11, p3658; Subject Term: HIGH electron mobility transistors; Subject Term: DIAMONDS; Subject Term: TEMPERATURE measurements; Subject Term: THERMAL conductivity; Subject Term: SUBSTRATES (Materials science); Author-Supplied Keyword: Coefficient of thermal expansion (CTE); Author-Supplied Keyword: Diamonds; Author-Supplied Keyword: ELO; Author-Supplied Keyword: Gallium nitride; Author-Supplied Keyword: GaN-on-diamond; Author-Supplied Keyword: GaN-on-Si; Author-Supplied Keyword: GaN-on-SiC; Author-Supplied Keyword: HEMTs; Author-Supplied Keyword: high electron mobility transistors (HEMTs); Author-Supplied Keyword: high thermal conductivity diamond; Author-Supplied Keyword: infrared (IR) imaging; Author-Supplied Keyword: Logic gates; Author-Supplied Keyword: low-temperature bonding; Author-Supplied Keyword: MODFETs; Author-Supplied Keyword: pulsed I-V; Author-Supplied Keyword: Radio frequency; Author-Supplied Keyword: RF power capability; Author-Supplied Keyword: RF power density; Author-Supplied Keyword: Substrates; Author-Supplied Keyword: thermal boundary resistance (TBR); Author-Supplied Keyword: thermal modeling; Author-Supplied Keyword: thermal resistance; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 414410 Jewellery and watch merchant wholesalers; NAICS/Industry Codes: 423940 Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TED.2015.2480756 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110652341&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Meierbachtol, Collin S. AU - Greenwood, Andrew D. AU - Verboncoeur, John P. AU - Shanker, Balasubramaniam T1 - Conformal Electromagnetic Particle in Cell: A Review. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2015/11// VL - 43 IS - 11 M3 - Article SP - 3778 EP - 3793 SN - 00933813 AB - Conformal (or body-fitted) electromagnetic particle-in-cell (EM-PIC) numerical solution schemes are reviewed. Included is a chronological history of relevant particle physics algorithms often employed in these conformal simulations. Brief mathematical descriptions of particle-tracking algorithms and current weighting schemes are provided, along with a brief summary of major time-dependent electromagnetic solution methods. Several research areas are also highlighted for recommended future development of new conformal EM-PIC methods. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETISM KW - ALGORITHMS KW - ELECTROMAGNETIC fields KW - ELECTROMAGNETIC forces KW - ELECTROMAGNETIC theory KW - Accuracy KW - Computational electromagnetics KW - conformal mesh KW - Finite difference methods KW - Finite element analysis KW - Force KW - Interpolation KW - particle in cell (PIC) KW - plasma simulation KW - reviews KW - Time-domain analysis N1 - Accession Number: 110859427; Meierbachtol, Collin S. 1 Greenwood, Andrew D. 1 Verboncoeur, John P. 2 Shanker, Balasubramaniam 2; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland Air Force Base, NM, USA 2: Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI, USA; Source Info: Nov2015, Vol. 43 Issue 11, p3778; Subject Term: ELECTROMAGNETISM; Subject Term: ALGORITHMS; Subject Term: ELECTROMAGNETIC fields; Subject Term: ELECTROMAGNETIC forces; Subject Term: ELECTROMAGNETIC theory; Author-Supplied Keyword: Accuracy; Author-Supplied Keyword: Computational electromagnetics; Author-Supplied Keyword: conformal mesh; Author-Supplied Keyword: Finite difference methods; Author-Supplied Keyword: Finite element analysis; Author-Supplied Keyword: Force; Author-Supplied Keyword: Interpolation; Author-Supplied Keyword: particle in cell (PIC); Author-Supplied Keyword: plasma simulation; Author-Supplied Keyword: reviews; Author-Supplied Keyword: Time-domain analysis; Number of Pages: 16p; Document Type: Article L3 - 10.1109/TPS.2015.2487522 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110859427&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Young, J. A. AU - Crofton, M. W. AU - Ferguson, D. C. AU - Hoffmann, R. C. AU - Wheelock, A. T. AU - Steele, K. AU - Likar, J. J. AU - Schneider, T. A. AU - Vaughn, J. A. AU - Bodeau, J. M. AU - Noushkam, N. AU - Vayner, B. V. T1 - Preliminary Measurements of ESD Propagation on a Round Robin Coupon. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2015/11// VL - 43 IS - 11 M3 - Article SP - 3939 EP - 3947 SN - 00933813 AB - The propagation dynamics of spacecraft electrostatic discharge (ESD) flashover plasmas have been a topic of increasing interest in the past few years. To investigate ESD propagation and possible contributions from facilities, methodology, and analysis, we performed inverted gradient ESD tests of an International Space Station solar array coupon as part of a U.S.-wide Round-Robin test campaign. Geosynchronous earth orbit charging environments were simulated and current transients were simultaneously measured on ten solar array strings. In addition, images of ESD events were collected by low- and high-speed cameras, and an array of eight Langmuir probes positioned above the coupon was monitored. Preliminary results will be discussed, with special attention given to the effect of different analysis techniques on derived propagation velocity. Comparisons will be made with the results from other labs, and implications for spacecraft ESD events will be discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROSTATIC discharges KW - STATIC electrification KW - ELECTRIC discharges KW - ELECTRON emission KW - Arrays KW - Discharges (electric) KW - Electric potential KW - Electrostatic discharge (ESD) KW - Electrostatic discharges KW - flashover KW - plasma propagation KW - Plasmas KW - Probes KW - solar array KW - Surface discharges KW - vacuum discharge KW - INTERNATIONAL Space Station N1 - Accession Number: 110859428; Young, J. A. 1 Crofton, M. W. 1 Ferguson, D. C. 2 Hoffmann, R. C. 2 Wheelock, A. T. 2 Steele, K. 3 Likar, J. J. 4 Schneider, T. A. 5 Vaughn, J. A. 5 Bodeau, J. M. 6 Noushkam, N. 7 Vayner, B. V. 8; Affiliation: 1: , The Aerospace Corporation, El Segundo, CA, USA 2: , Air Force Research Laboratory, Albuquerque, NM, USA 3: , Alliant Techsystems, Goleta, CA, USA 4: , UTC Aerospace Systems, Danbury, CT, USA 5: , Marshall Space Flight Center, Huntsville, AL, USA 6: , Northrop Grumman Aerospace, Redondo Beach, CA, USA 7: , Orbital Sciences Corporation, El Segundo, CA, USA 8: , Ohio Aerospace Institute, Brookpark, OH, USA; Source Info: Nov2015, Vol. 43 Issue 11, p3939; Subject Term: ELECTROSTATIC discharges; Subject Term: STATIC electrification; Subject Term: ELECTRIC discharges; Subject Term: ELECTRON emission; Author-Supplied Keyword: Arrays; Author-Supplied Keyword: Discharges (electric); Author-Supplied Keyword: Electric potential; Author-Supplied Keyword: Electrostatic discharge (ESD); Author-Supplied Keyword: Electrostatic discharges; Author-Supplied Keyword: flashover; Author-Supplied Keyword: plasma propagation; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Probes; Author-Supplied Keyword: solar array; Author-Supplied Keyword: Surface discharges; Author-Supplied Keyword: vacuum discharge; Company/Entity: INTERNATIONAL Space Station; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TPS.2015.2479188 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110859428&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Al-Rjoub, Marwan F. AU - Roy, Ajit K. AU - Ganguli, Sabyasachi AU - Banerjee, Rupak K. T1 - Enhanced heat transfer in a micro-scale heat exchanger using nano-particle laden electro-osmotic flow. JO - International Communications in Heat & Mass Transfer JF - International Communications in Heat & Mass Transfer Y1 - 2015/11// VL - 68 M3 - Article SP - 228 EP - 235 SN - 07351933 AB - This research presents a multi-channel micro-scale heat exchanger for thermal management of microelectronics hot spots. Electro-osmotic flow (EOF) was implemented to drive the cooling liquid through the micro-channels of the heat exchanger. Various cooling liquids including, deionized water, distilled water, borax buffer, and Al 2 O 3 nano-particle solution, were tested and compared based on their flow rates and increase in cooling liquid temperature. The micro-scale heat exchanger was fabricated using a combination of polydimethylsiloxane (PDMS) and silicon dioxide-coated substrate. A constant heat flux heater was used to simulate the heat generated by microelectronic devices. The flow rate of the cooling liquid and its temperatures at the inlet and the outlet reservoirs were measured. Deionized water produced a flow rate of 30.1 μL/min and 2 °C increase between the inlet and the outlet reservoir temperatures at 1 W heating power and 400 V of EOF. The flow rate and the increase in temperature of distilled water at the same conditions were 22.7 μL/min and 3 °C, respectively. For the borax buffer the flow rate was 33.1 μL/min and the increase in temperature was 2.7 °C. Most notably, there was an increase in temperature of 2.4 °C with a lower flow rate of 20.4 μL/min when the Al 2 O 3 nano-particle solution was used. Among all cooling liquids, the Al 2 O 3 nano-particle solution showed the highest scaled specific heat energy removal with a maximum of ~ 69% increase compared to deionized water. Further, the current micro-scale heat exchanger device was able to produce higher electro-osmotic flow rates due to the use of PDMS on three sides of the micro-channel; thus providing smoother walls and higher zeta-potential while the silicon surface allowed heat transfer to the cooling liquid. The increased flow rate allowed enhanced heat removal from higher heat flux areas (hot spots) of microelectronic devices without the need for high-pressure pumping systems. [ABSTRACT FROM AUTHOR] AB - Copyright of International Communications in Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RUDOLF Clausius statement KW - THERMAL insulation KW - THERMAL conductivity KW - HEAT -- Convection KW - MASS transfer KW - HEAT transfer KW - ENERGY transfer KW - THERMODYNAMICS KW - Al 2 O 3 nano-particles KW - EOF KW - Hot spot cooling KW - Micro-scale heat exchanger N1 - Accession Number: 110599730; Al-Rjoub, Marwan F. 1 Roy, Ajit K. 2 Ganguli, Sabyasachi 2 Banerjee, Rupak K. 1; Email Address: rupak.banerjee@uc.edu; Affiliation: 1: Mechanical and Materials Engineering Department, University of Cincinnati, Cincinnati, OH, USA 2: Nanoelectronic Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, OH, USA; Source Info: Nov2015, Vol. 68, p228; Subject Term: RUDOLF Clausius statement; Subject Term: THERMAL insulation; Subject Term: THERMAL conductivity; Subject Term: HEAT -- Convection; Subject Term: MASS transfer; Subject Term: HEAT transfer; Subject Term: ENERGY transfer; Subject Term: THERMODYNAMICS; Author-Supplied Keyword: Al 2 O 3 nano-particles; Author-Supplied Keyword: EOF; Author-Supplied Keyword: Hot spot cooling; Author-Supplied Keyword: Micro-scale heat exchanger; NAICS/Industry Codes: 423330 Roofing, Siding, and Insulation Material Merchant Wholesalers; NAICS/Industry Codes: 238310 Drywall and Insulation Contractors; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.icheatmasstransfer.2015.09.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110599730&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kolonay, Raymond M. AU - Kobayashi, Marcelo H. T1 - Optimization of Aircraft Lifting Surfaces Using a Cellular Division Method. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2015/11//Nov/Dec2015 VL - 52 IS - 6 M3 - Article SP - 2051 EP - 2063 SN - 00218669 AB - The development of a biologically inspired methodology for topology, shape, sizing, and control surface optimization of aircraft lifting surfaces is presented. The methodology is based on the map L-systems modeling of cellular division to generate the substructure topology. This is combined with variables for aerodynamic shape, structural sizing, and control surfaces (number, size, location, and aeroelastic trimmed settings) and constraints on stiffness, strength, local skin panel buckling, static aeroelastic response (roll performance, pitch rate, trimmed angle of attack), and flutter requirements. A dual-objective function is formulated with weight and L/D and is solved with a bilevel optimization algorithm. The map L-system rules that develop the topology are evolved using a genetic algorithm in the outer optimization loop on L/D and weight, which obtains the optimal parameter settings for topology, shape, and control surfaces, whereas the inner loop performs weight minimization with the structural sizing variables. The methodology is demonstrated on the design of a generic fighter aircraft wing. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BINARY operations KW - MULTIPLICATION KW - MACHINE theory KW - L systems KW - STEREOTYPE content model N1 - Accession Number: 112148562; Kolonay, Raymond M. 1; Email Address: Raymond.Kolonay@us.af.mil Kobayashi, Marcelo H. 2; Email Address: marcelok@hawaii.edu; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: University of Hawaii at Manoa, Honolulu, Hawaii 96822; Source Info: Nov/Dec2015, Vol. 52 Issue 6, p2051; Subject Term: BINARY operations; Subject Term: MULTIPLICATION; Subject Term: MACHINE theory; Subject Term: L systems; Subject Term: STEREOTYPE content model; Number of Pages: 13p; Document Type: Article L3 - 10.2514/1.C033138 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112148562&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Soto-Aquino, D. AU - Rinaldi, C. T1 - Nonlinear energy dissipation of magnetic nanoparticles in oscillating magnetic fields. JO - Journal of Magnetism & Magnetic Materials JF - Journal of Magnetism & Magnetic Materials Y1 - 2015/11// VL - 393 M3 - Article SP - 46 EP - 55 SN - 03048853 AB - The heating of magnetic nanoparticle suspensions subjected to alternating magnetic fields enables a variety of emerging applications such as magnetic fluid hyperthermia and triggered drug release. Rosensweig (2002) [25] obtained a model for the heat dissipation rate of a collection of non-interacting particles. However, the assumptions made in this analysis make it rigorously valid only in the limit of small applied magnetic field amplitude and frequency (i.e., values of the Langevin parameter that are much less than unity and frequencies below the inverse relaxation time). In this contribution we approach the problem from an alternative point of view by solving the phenomenological magnetization relaxation equation exactly for the case of arbitrary magnetic field amplitude and frequency and by solving a more accurate magnetization relaxation equation numerically. We also use rotational Brownian dynamics simulations of non-interacting magnetic nanoparticles subjected to an alternating magnetic field to estimate the rate of energy dissipation and compare the results of the phenomenological theories to the particle-scale simulations. The results are summarized in terms of a normalized energy dissipation rate and show that Rosensweig's expression provides an upper bound on the energy dissipation rate achieved at high field frequency and amplitude. Estimates of the predicted dependence of energy dissipation rate, quantified as specific absorption rate (SAR), on magnetic field amplitude and frequency, and particle core and hydrodynamic diameter, are also given. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Magnetism & Magnetic Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENERGY dissipation KW - MAGNETIC nanoparticles KW - OSCILLATING chemical reactions KW - MAGNETIC fields KW - MAGNETIC fluids KW - Alternating magnetic field KW - Brownian dynamics KW - Energy dissipation KW - Ferrofluids KW - Magnetic nanoparticles KW - Relaxation KW - Specific absorption rate N1 - Accession Number: 103724181; Soto-Aquino, D. 1 Rinaldi, C. 2; Email Address: carlos.rinaldi@bme.ufl.edu; Affiliation: 1: ERC Incorporated, Air Force Research Laboratory, 10 E. Saturn Blvd., Edwards AFB, CA 93524, USA 2: J. Crayton Pruitt Family Department of Biomedical Engineering and Department of Chemical Engineering, University of Florida, PO Box 116131, Gainesville, FL 32611-6131, USA; Source Info: Nov2015, Vol. 393, p46; Subject Term: ENERGY dissipation; Subject Term: MAGNETIC nanoparticles; Subject Term: OSCILLATING chemical reactions; Subject Term: MAGNETIC fields; Subject Term: MAGNETIC fluids; Author-Supplied Keyword: Alternating magnetic field; Author-Supplied Keyword: Brownian dynamics; Author-Supplied Keyword: Energy dissipation; Author-Supplied Keyword: Ferrofluids; Author-Supplied Keyword: Magnetic nanoparticles; Author-Supplied Keyword: Relaxation; Author-Supplied Keyword: Specific absorption rate; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.jmmm.2015.05.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103724181&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Xiaoning AU - Zhu, Zhu AU - Li, Feng AU - Peng, Ranran AU - Zhai, Xiaofang AU - Fu, Zhengping AU - Lu, Yalin T1 - Facile route to prepare grain-oriented multiferroic Bi7Fe3−xCoxTi3O21 ceramics. JO - Journal of the European Ceramic Society JF - Journal of the European Ceramic Society Y1 - 2015/11// VL - 35 IS - 13 M3 - Article SP - 3437 EP - 3443 SN - 09552219 AB - A facile route was developed to fabricate Bi 7 Fe 3− x Co x Ti 3 O 21 (BFCTO) ceramics in which the micrometer sized grains were highly [0 0 1] oriented. The preparation involved dry pressing nanoplates with high aspect ratio under low axial pressure (10 MPa), and subsequently sintering the green compact at high temperature without applied pressure. The formation mechanism and the effects of Co doping on the orientation were investigated. The results indicated that the orientation degree of BFCTO grains was depended on the aspect ratio of nanoplate powder, which increased with the increase of doping amount of Co. The degree of orientation was achieved as high as 0.91 in Bi 7 Fe 2 CoTi 3 O 21 ceramic. The saturation magnetization (2 Ms) values were larger when surfaces of the oriented grains were perpendicular to the direction of applied magnetic field, indicating obvious anisotropic magnetism. This fabrication method provided an economical yet convenient approach to manufacture grain-oriented complex oxide ceramics with improved magnetic property. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the European Ceramic Society is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLE size distribution KW - MULTIFERROIC materials KW - BISMUTH compounds KW - TITANIUM dioxide KW - CERAMIC materials KW - MATERIALS -- Mechanical properties KW - NANOFABRICATION KW - Aurivillius phase KW - Doping KW - Grain-oriented KW - Hydrothermal method KW - Pressureless sintering N1 - Accession Number: 103727771; Li, Xiaoning 1 Zhu, Zhu 1 Li, Feng 1 Peng, Ranran 1,2 Zhai, Xiaofang 2 Fu, Zhengping 1,2; Email Address: fuzp@ustc.edu.cn Lu, Yalin 1,2,3,4; Email Address: yllu@ustc.edu.cn; Affiliation: 1: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, PR China 2: Synergetic Innovation Center of Quantum Information and Quantum Physics & Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, PR China 3: National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, PR China 4: Laser Optics Research Center, US Air Force Academy, Colorado 80840, USA; Source Info: Nov2015, Vol. 35 Issue 13, p3437; Subject Term: PARTICLE size distribution; Subject Term: MULTIFERROIC materials; Subject Term: BISMUTH compounds; Subject Term: TITANIUM dioxide; Subject Term: CERAMIC materials; Subject Term: MATERIALS -- Mechanical properties; Subject Term: NANOFABRICATION; Author-Supplied Keyword: Aurivillius phase; Author-Supplied Keyword: Doping; Author-Supplied Keyword: Grain-oriented; Author-Supplied Keyword: Hydrothermal method; Author-Supplied Keyword: Pressureless sintering; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jeurceramsoc.2015.05.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103727771&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fu, C.H. AU - Lin, Y.H. AU - Lee, W.C. AU - Lin, T.D. AU - Chu, R.L. AU - Chu, L.K. AU - Chang, P. AU - Chen, M.H. AU - Hsueh, W.J. AU - Chen, S.H. AU - Brown, G.J. AU - Chyi, J.I. AU - Kwo, J. AU - Hong, M. T1 - Self-aligned inversion-channel n-InGaAs, p-GaSb, and p-Ge MOSFETs with a common high κ gate dielectric using a CMOS compatible process. JO - Microelectronic Engineering JF - Microelectronic Engineering Y1 - 2015/11// VL - 147 M3 - Article SP - 330 EP - 334 SN - 01679317 AB - Y 2 O 3 , as a common high κ gate dielectric, has been directly deposited on (In)GaAs, GaSb, and Ge using electron beam evaporation in ultra-high vacuum. These semiconductors have distinctly different chemical bonding and surface electronic characteristics. No interfacial passivation layer was employed. High-quality Y 2 O 3 /semiconductor interfaces have been achieved, resulting in low interfacial trap densities and high-temperature thermal stability, essential for the CMOS compatible process. Self-aligned inversion channel n-InGaAs, p-GaSb, and p-Ge MOSFETs have been fabricated with excellent device performances. [ABSTRACT FROM AUTHOR] AB - Copyright of Microelectronic Engineering is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDIUM gallium arsenide KW - SELF-alignment (Materials science) KW - METAL oxide semiconductor field-effect transistors KW - DIELECTRIC devices KW - EVAPORATION (Chemistry) KW - HIGH temperatures KW - CMOS KW - Common gate stacks KW - GaSb KW - Ge KW - III–V KW - Rare earth oxide N1 - Accession Number: 103425537; Fu, C.H. 1 Lin, Y.H. 1 Lee, W.C. 2 Lin, T.D. 1 Chu, R.L. 3 Chu, L.K. 3 Chang, P. 3 Chen, M.H. 4 Hsueh, W.J. 5 Chen, S.H. 6 Brown, G.J. 7 Chyi, J.I. 5; Email Address: chyi@ee.ncu.edu.tw Kwo, J. 2; Email Address: raynien@phys.nthu.edu.tw Hong, M. 1; Email Address: mhong@phys.ntu.edu.tw; Affiliation: 1: Graduate Institute of Applied Physics and Department of Physics, National Taiwan University, Taipei, Taiwan 2: Department of Physics, National Tsing Hua University, Hsinchu, Taiwan 3: Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan 4: Graduate Institute of Electronic Engineering, National Taiwan University, Taipei, Taiwan 5: Department of Electrical Engineering, National Central University, Jhongli, Taiwan 6: National Nano Device Laboratories (NDL), Hsinchu, Taiwan 7: Air Force Research Laboratory (AFRL), Dayton, OH, USA; Source Info: Nov2015, Vol. 147, p330; Subject Term: INDIUM gallium arsenide; Subject Term: SELF-alignment (Materials science); Subject Term: METAL oxide semiconductor field-effect transistors; Subject Term: DIELECTRIC devices; Subject Term: EVAPORATION (Chemistry); Subject Term: HIGH temperatures; Author-Supplied Keyword: CMOS; Author-Supplied Keyword: Common gate stacks; Author-Supplied Keyword: GaSb; Author-Supplied Keyword: Ge; Author-Supplied Keyword: III–V; Author-Supplied Keyword: Rare earth oxide; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.mee.2015.04.098 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103425537&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sasikumar, A. AU - Arehart, A.R. AU - Via, G.D. AU - Winningham, B. AU - Poling, B. AU - Heller, E. AU - Ringel, S.A. T1 - Identification of an RF degradation mechanism in GaN based HEMTs triggered by midgap traps. JO - Microelectronics Reliability JF - Microelectronics Reliability Y1 - 2015/11// VL - 55 IS - 11 M3 - Article SP - 2258 EP - 2262 SN - 00262714 AB - Quantitative defect spectroscopy was performed on low gate leakage operational S-band GaN HEMTs before and after RF accelerated life testing (ALT) to investigate and quantify potential connections between the evolution of observed traps and RF output power loss in these HEMTs after stressing. Constant drain current deep level transient spectroscopy and deep level optical spectroscopy (CI D -DLTS and CI D -DLOS, respectively) were used to interrogate thermally-emitting traps (CI D -DLTS) and deeper optically-stimulated traps (CI D -DLOS) so that the entire bandgap can be probed systematically before and after ALT. Using drain-controlled CI D -DLTS/DLOS, with which traps in the drain access region are resolved, it is found that an increase in the concentration of a broad range of deep states between E C –1.6 to 3.0 eV, detected by CI D -DLOS, causes a persistent increase in on-resistance of ~ 0.22 Ω-mm, which is a likely source for the 1.2 dB reduction in RF output power that was observed after stressing. In contrast, the combined effect of the upper bandgap states at E C –0.57 and E C –0.72 eV, observed by CI D -DLTS, is responsible for only ~ 10% of the on-resistance increase. These results demonstrate the importance of discriminating between traps throughout the entire bandgap with regard to the relative roles of individual traps on degradation of GaN HEMTs after ALT. [ABSTRACT FROM AUTHOR] AB - Copyright of Microelectronics Reliability is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO frequency KW - GALLIUM nitride KW - MODULATION-doped field-effect transistors KW - OPTICAL spectroscopy KW - ENERGY gaps (Physics) KW - DEEP level transient spectroscopy KW - Deep level optical spectroscopy (DLOS) KW - Deep level transient spectroscopy (DLTS) KW - Degradation KW - Gallium nitride KW - High electron mobility transistors (HEMTs) KW - Reliability KW - Traps N1 - Accession Number: 111322027; Sasikumar, A. 1 Arehart, A.R. 1 Via, G.D. 2 Winningham, B. 2 Poling, B. 3 Heller, E. 2 Ringel, S.A. 1; Email Address: ringel.5@osu.edu; Affiliation: 1: The Ohio State University, Columbus, OH 43210, USA 2: Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA 3: Wyle Laboratories, Dayton, OH 45431 USA; Source Info: Nov2015, Vol. 55 Issue 11, p2258; Subject Term: RADIO frequency; Subject Term: GALLIUM nitride; Subject Term: MODULATION-doped field-effect transistors; Subject Term: OPTICAL spectroscopy; Subject Term: ENERGY gaps (Physics); Subject Term: DEEP level transient spectroscopy; Author-Supplied Keyword: Deep level optical spectroscopy (DLOS); Author-Supplied Keyword: Deep level transient spectroscopy (DLTS); Author-Supplied Keyword: Degradation; Author-Supplied Keyword: Gallium nitride; Author-Supplied Keyword: High electron mobility transistors (HEMTs); Author-Supplied Keyword: Reliability; Author-Supplied Keyword: Traps; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.microrel.2015.07.048 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111322027&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 110726441 T1 - Active Duty Women's Perceptions of Breast-Feeding Support in the Military Setting. AU - Martin, Sarah E. AU - Drake, Emily AU - Yoder, Laura AU - Gibson, Mary AU - Litke, Carrie Ann Y1 - 2015/11// N1 - Accession Number: 110726441. Language: English. Entry Date: 20160526. Revision Date: 20160526. Publication Type: journal article. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 2984771R. KW - Breast Feeding -- Psychosocial Factors KW - Work Environment KW - Military Personnel -- Psychosocial Factors KW - Women, Working KW - Perception KW - Adult KW - United States KW - Cross Sectional Studies KW - Female KW - Young Adult KW - Middle Age SP - 1154 EP - 1160 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 180 IS - 11 CY - Bethesda, Maryland PB - AMSUS AB - Background: The purpose of this study is to evaluate the current perceptions of breast-feeding support for active duty women serving in the U.S. Armed Forces.Methods: An online survey based on the Workplace Breastfeeding Support Scale (WBSS) was used to collect data from active duty military mothers. Data were collected and analyzed using SPSS software to evaluate active duty women's perceptions of breast-feeding support in the military.Results: 318 active duty women participated in the online survey. The average WBSS scores for active duty women was 50.20 (SD = 15.75). Comparing WBSS scores and branch of service, women in the Army had significantly lower WBSS scores (M = 45.85) then women in the Air Force (M = 53.96, p < 0.001). Enlisted women had significantly lower scores (M = 47.12) than officers (M = 54.62, p < 0.001). Also noted were significantly lower scores of active duty women who were Hispanic (M = 44.30) and women who had lower levels of education (M = 46.90, p = 0.006).Conclusions: The Department of Defense may be able to improve breast-feeding rates for all active duty mothers by implementing and adhering to lactation policies and focusing support efforts for enlisted women in all branches of service. SN - 0026-4075 AD - United States Air Force, 728 Vandenberg Drive, Biloxi, MS 39531 AD - Department of Family, Community, and Mental Health Systems, School of Nursing, University of Virginia, CMNEB 3007, Charlottesville, VA 22903-3388 AD - Eastern Mennonite University, 1200 Park Road, Harrisonburg, VA 22801 AD - United States Air Force, 1245 Phantom Valley Street, San Antonio, TX 78232 U2 - PMID: 26540707. DO - 10.7205/MILMED-D-14-00498 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=110726441&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - White, Timothy J. AU - Broer, Dirk J. T1 - Programmable and adaptive mechanics with liquid crystal polymer networks and elastomers. JO - Nature Materials JF - Nature Materials Y1 - 2015/11// VL - 14 IS - 11 M3 - Article SP - 1087 EP - 1098 SN - 14761122 AB - Liquid crystals are the basis of a pervasive technology of the modern era. Yet, as the display market becomes commoditized, researchers in industry, government and academia are increasingly examining liquid crystalline materials in a variety of polymeric forms and discovering their fascinating and useful properties. In this Review, we detail the historical development of liquid crystalline polymeric materials, with emphasis on the thermally and photogenerated macroscale mechanical responses - such as bending, twisting and buckling - and on local-feature development (primarily related to topographical control). Within this framework, we elucidate the benefits of liquid crystallinity and contrast them with other stimuli-induced mechanical responses reported for other materials. We end with an outlook of existing challenges and near-term application opportunities. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature Materials is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALLINE polymers KW - RESEARCH KW - LIQUID crystals KW - ELASTOMERS KW - CRYSTALS N1 - Accession Number: 110459416; White, Timothy J. 1 Broer, Dirk J. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Eindhoven University of Technology, Institute for Complex Molecular Systems, Department of Chemical Engineering and Chemistry, Helix Building STO 0.34, PO Box 513, 5600 MB Eindhoven, The Netherlands; Source Info: Nov2015, Vol. 14 Issue 11, p1087; Subject Term: CRYSTALLINE polymers; Subject Term: RESEARCH; Subject Term: LIQUID crystals; Subject Term: ELASTOMERS; Subject Term: CRYSTALS; NAICS/Industry Codes: 325212 Synthetic Rubber Manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; Number of Pages: 12p; Illustrations: 4 Color Photographs, 1 Black and White Photograph, 2 Diagrams; Document Type: Article L3 - 10.1038/nmat4433 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110459416&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhdanov, B.V. AU - Rotondaro, M.D. AU - Shaffer, M.K. AU - Knize, R.J. T1 - Potassium Diode Pumped Alkali Laser demonstration using a closed cycle flowing system. JO - Optics Communications JF - Optics Communications Y1 - 2015/11// VL - 354 M3 - Article SP - 256 EP - 258 SN - 00304018 AB - The first Potassium Diode Pumped Alkali Laser (DPAL) with flowing gain medium in closed cycle system has been demonstrated. A slope efficiency of 31% for continuous wave operation was achieved with a maximum output power 5 W. The flow loop was operated with a helium buffer gas pressure of 800 Torr and an alkali metal temperature of 185 °C. An examination of laser performance vs flow speed demonstrated higher efficiencies with increasing flow speeds. [ABSTRACT FROM AUTHOR] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POTASSIUM KW - DIODES KW - CONTINUOUS wave lasers KW - THERMAL efficiency KW - EFFECT of temperature on metals KW - Alkali lasers KW - DPAL KW - Potassium laser KW - Thermal effects N1 - Accession Number: 108700933; Zhdanov, B.V. 1; Email Address: boris.zhdanov.ctr@usafa.edu Rotondaro, M.D. 1 Shaffer, M.K. 1 Knize, R.J. 1; Affiliation: 1: US Air Force Academy, Laser and Optics Research Center, 2354 Fairchild Drive, Suite 2A31, USAF Academy, CO 80840, USA; Source Info: Nov2015, Vol. 354, p256; Subject Term: POTASSIUM; Subject Term: DIODES; Subject Term: CONTINUOUS wave lasers; Subject Term: THERMAL efficiency; Subject Term: EFFECT of temperature on metals; Author-Supplied Keyword: Alkali lasers; Author-Supplied Keyword: DPAL; Author-Supplied Keyword: Potassium laser; Author-Supplied Keyword: Thermal effects; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.optcom.2015.06.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108700933&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hu, Dehua AU - Liu, Qing AU - Tisdale, Jeremy AU - Nam, Haerim AU - Park, Soo Young AU - Wang, Hsin AU - Urbas, Augustine AU - Hu, Bin T1 - Optically tunable Seebeck effect from intramolecular proton-transfer materials in organic vertical thin-film thermoelectric device. JO - Organic Electronics JF - Organic Electronics Y1 - 2015/11// VL - 26 M3 - Article SP - 117 EP - 120 SN - 15661199 AB - This paper reports Seebeck effects from optically-induced intramolecular proton-transfer HPI-Cbz molecules based on vertical electrode/organic film/electrode thin-film devices. We observed large Seebeck coefficients of 428 μV/K and 390 μV/K from HPI-Cbz based thin-film devices at 60 °C when proton-transfer was induced by the photoexcitation of a 325 nm laser with an intensity of 12 mW/cm 2 and 6 mW/cm 2 respectively. Under dark condition without proton transfer occurring, the Seebeck coefficient was measured to be 342 μV/K at 60 °C. The Seebeck coefficient enhancement by the induced intramolecular charge transfer can be attributed to the enhanced polarization difference between high- and low-temperature surface due to the stronger electron–phonon coupling followed with the proton-transfer in HPI-Cbz under photoexcitation, and the strength of electron–phonon coupling is proportional to the photoexcitation intensity. The enhanced temperature-dependent electrical polarization between the high and low-temperature surfaces acts as an additional driving force to diffuse the majority charge carriers for the development of a large Seebeck effect. Therefore, using intramolecular proton-transfer presents an effective approach of enhancing Seebeck effect in organic materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Organic Electronics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL tuning KW - SEEBECK effect KW - INTRAMOLECULAR proton transfer reactions KW - THERMOELECTRIC apparatus & appliances KW - PROTON transfer reactions KW - Electron–phonon coupling KW - Organic semiconductors KW - Proton-transfer KW - Seebeck effect N1 - Accession Number: 109320398; Hu, Dehua 1,2 Liu, Qing 1 Tisdale, Jeremy 1 Nam, Haerim 3 Park, Soo Young 3 Wang, Hsin 4 Urbas, Augustine 5 Hu, Bin 1; Email Address: bhu@utk.edu; Affiliation: 1: Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN 37996, USA 2: Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, PR China 3: Department of Materials Science and Engineering, ENG445, Seoul National University, San 56-1, Shillim-dong, Kwanak-gu, Seoul 151-744, Republic of Korea 4: Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA 5: Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA; Source Info: Nov2015, Vol. 26, p117; Subject Term: OPTICAL tuning; Subject Term: SEEBECK effect; Subject Term: INTRAMOLECULAR proton transfer reactions; Subject Term: THERMOELECTRIC apparatus & appliances; Subject Term: PROTON transfer reactions; Author-Supplied Keyword: Electron–phonon coupling; Author-Supplied Keyword: Organic semiconductors; Author-Supplied Keyword: Proton-transfer; Author-Supplied Keyword: Seebeck effect; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.orgel.2015.07.029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109320398&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mangina, R. S. AU - Enloe, C. L. AU - Font, G. I. T1 - Dielectric barrier discharge-based plasma actuator operation in artificial atmospheres for validation of modeling and simulation. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2015/11// VL - 22 IS - 11 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 1070664X AB - We present an experimental case study of time-resolved force production by an aerodynamic plasma actuator immersed in various mixtures of electropositive (N2) and electronegative gases (O2 and SF6) at atmospheric pressure using a fixed AC high-voltage input of 16 kV peak amplitude at 200 Hz frequency. We have observed distinct changes in the discharge structures during both negative- and positive-going voltage half-cycles, with corresponding variations in the actuator's force production: a ratio of 4:1 in the impulse produced by the negative-going half-cycle of the discharge among the various gas mixtures we explored, 2:1 in the impulse produced by the positive-going half-cycle, and cases in which the negative-going half-cycle dominates force production (by a ratio of 1.5:1), where the half-cycles produce identical force levels, and where the positive-going half cycle dominates (by a ratio of 1:5). We also present time-resolved experimental evidence for the first time that shows electrons do play a significant role in the momentum coupling to surrounding neutrals during the negative going voltage half-cycle of the N2 discharge. We show that there is sufficient macroscopic variation in the plasma that the predictions of numerical models at the microscopic level can be validated even though the plasma itself cannot be measured directly on those spatial and temporal scales. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRICS KW - PLASMA (Ionized gases) KW - AERODYNAMICS KW - ACTUATORS -- Design & construction KW - ELECTRIC potential N1 - Accession Number: 111400780; Mangina, R. S. 1 Enloe, C. L. 1,2 Font, G. I. 1; Affiliation: 1: Department of Physics, United States Air Force Academy, Colorado 80840, USA 2: Naval Research Laboratory, Washington, DC 20375, USA; Source Info: 215, Vol. 22 Issue 11, p1; Subject Term: DIELECTRICS; Subject Term: PLASMA (Ionized gases); Subject Term: AERODYNAMICS; Subject Term: ACTUATORS -- Design & construction; Subject Term: ELECTRIC potential; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.4935380 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111400780&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jun Oh Kim AU - Zahyun Ku AU - Augustine Urbas AU - Sang Jun Lee T1 - Investigation of the shape of submonolayer quantum dots using a polarization-dependent photocurrent. JO - Semiconductor Science & Technology JF - Semiconductor Science & Technology Y1 - 2015/11// VL - 30 IS - 11 M3 - Article SP - 1 EP - 1 SN - 02681242 AB - Structural and optical characterization of multi-stack InAs/InGaAs submonolayer quantum dots (SML-QDs) grown under the Stranski–Krastanov growth mode was performed via a polarization-dependent study. Various angular in-plane (plane perpendicular to growth direction) and out-of-plane (plane parallel to the 45°-polished facet) polarization-dependent spectral photocurrents were measured to investigate the three-dimensional quantum confinement in multi-stack 0.3 monolayer InAs SML-QDs (the shape of SML-QDs embedded in an SML-QD based photodetector). Scanning transmission electron microscopy images revealed the interdiffusion of indium atoms between SML-QDs and the InGaAs quantum well due to an insufficient amount of indium, which agrees well with the tendency of s- to z-polarized response ratios. [ABSTRACT FROM AUTHOR] AB - Copyright of Semiconductor Science & Technology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM dots KW - SHAPES KW - PHOTOCURRENTS KW - POLARIZATION (Electricity) KW - CRYSTAL growth KW - SEMICONDUCTOR quantum wells N1 - Accession Number: 110949626; Jun Oh Kim 1,2 Zahyun Ku 2,3 Augustine Urbas 3 Sang Jun Lee 1; Email Address: sjlee@kriss.re.kr; Affiliation: 1: Korea Research Institute of Standards and Science, Daejeon, Korea 305-340 2: These authors equally contributed to this work. 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Nov2015, Vol. 30 Issue 11, p1; Subject Term: QUANTUM dots; Subject Term: SHAPES; Subject Term: PHOTOCURRENTS; Subject Term: POLARIZATION (Electricity); Subject Term: CRYSTAL growth; Subject Term: SEMICONDUCTOR quantum wells; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0268-1242/30/11/115005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110949626&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sulym, H. AU - Andrusiv, L. AU - Pasternak, Y. T1 - Interaction of thin inclusion with circular hole in the elastic isotropic medium. JO - ZAMM -- Journal of Applied Mathematics & Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik JF - ZAMM -- Journal of Applied Mathematics & Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik Y1 - 2015/11// VL - 95 IS - 11 M3 - Article SP - 1282 EP - 1289 SN - 00442267 AB - The purpose of this paper is to analyze the interaction of thin elastic inclusions with globular defects in a solid structural element and develop technique to determine fracture parameters when the elastic inclusion of the structure is close to a circular hole and/or to its bonding layers. Procedures for determination of fracture parameters are based on the J-integral relation with generalized stress intensity factors (GSIF) recently obtained by the authors and the boundary element method is adopted for studying thin shapes. The developed techniques, dominating GSIF and mutual integral method, are applied to two specific problems: the interaction of a traction-free hole with a nearby, thin inclusion and the interaction of a constrained hole with the inclusion. The direct numerical solution was obtained for the two principal models which represent two different boundary conditions on the edge of the hole of the structural element. The study shows that if the hole is unstressed, the values of GSIF are approximately the same as the corresponding values of the fracture parameters and the presence of the hole and the rigid inclusion have only a small effect on GSIF. But if the hole is constrained along its boundary, the values of GSIF generally decrease with decreasing the distance between the inclusion and the hole. The stress concentration on the hole substantially depends on the presence of the inclusion and varies significantly with respect to its radius, the distance from the inclusion, and the relative rigidity of the inclusion. [ABSTRACT FROM AUTHOR] AB - Copyright of ZAMM -- Journal of Applied Mathematics & Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INCLUSION compounds KW - STRESS intensity factors (Fracture mechanics) KW - BOUNDARY value problems KW - STRESS concentration KW - RIGIDITY (Geometry) KW - Boundary element method KW - generalized stress intensity factors KW - inclusion KW - J-integral KW - thin shape N1 - Accession Number: 110606371; Sulym, H. 1 Andrusiv, L. 2 Pasternak, Y. 3; Affiliation: 1: Bialystok Technical University 2: United States Air Force Academy 3: Lutsk National Technical University; Source Info: Nov2015, Vol. 95 Issue 11, p1282; Subject Term: INCLUSION compounds; Subject Term: STRESS intensity factors (Fracture mechanics); Subject Term: BOUNDARY value problems; Subject Term: STRESS concentration; Subject Term: RIGIDITY (Geometry); Author-Supplied Keyword: Boundary element method; Author-Supplied Keyword: generalized stress intensity factors; Author-Supplied Keyword: inclusion; Author-Supplied Keyword: J-integral; Author-Supplied Keyword: thin shape; Number of Pages: 8p; Document Type: Article L3 - 10.1002/zamm.201300157 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110606371&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2015-40655-005 AN - 2015-40655-005 AU - Zemla, Jeffrey C. AU - Tossell, Chad C. AU - Kortum, Philip AU - Byrne, Michael D. T1 - A Bayesian approach to predicting website revisitation on mobile phones. JF - International Journal of Human-Computer Studies JO - International Journal of Human-Computer Studies JA - Int J Hum Comput Stud Y1 - 2015/11// VL - 83 SP - 43 EP - 50 CY - Netherlands PB - Elsevier Science SN - 1071-5819 AD - Zemla, Jeffrey C. N1 - Accession Number: 2015-40655-005. Other Journal Title: International Journal of Man-Machine Studies. Partial author list: First Author & Affiliation: Zemla, Jeffrey C.; Department of Cognitive, Linguistic, & Psychological Sciences, Brown University, Providence, RI, US. Release Date: 20150921. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Human Computer Interaction; Websites; Cellular Phones; Computational Modeling. Minor Descriptor: Performance. Classification: Human Factors Engineering (4010). Population: Human (10); Male (30); Female (40). Methodology: Empirical Study; Field Study; Mathematical Model; Quantitative Study. References Available: Y. Page Count: 8. Issue Publication Date: Nov, 2015. Publication History: First Posted Date: Jun 12, 2015; Accepted Date: Jun 4, 2015; Revised Date: Jun 3, 2015; First Submitted Date: Jun 12, 2014. Copyright Statement: All rights reserved. Elsevier Ltd. 2015. AB - Mobile web browsing is highly recurrent, in that a large proportion of user's page requests are to a small set of websites. Despite this, most mobile browsers do not provide an efficient means for revisiting sites. Although significant research exists on prediction in the personal computer realm, little work has been done in the mobile realm where physical constraints of the device and mobile browsing behaviors are vastly different. The current research proposes a Bayesian model approach, based on a cognitive model of memory retrieval that integrates multiple cues in order to predict the next site a user will visit. These cues include frequency of site visitation, the recency of site visitation, and the context in which specific sites are accessed. The model is assessed using previously collected web logs from 24 iPhone users over the course of one year. Our model outperforms simpler models based on frequency or recency, which are sometimes implemented in desktop browsers. Potential applications of the model are discussed with the objective of increasing browsing efficiency on mobile devices. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - World wide web KW - Mobile phones KW - Computational modeling KW - 2015 KW - Human Computer Interaction KW - Websites KW - Cellular Phones KW - Computational Modeling KW - Performance KW - 2015 U1 - Sponsor: National Science Foundation. Grant: IIS/HCC 0803556. Recipients: No recipient indicated DO - 10.1016/j.ijhcs.2015.06.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-40655-005&site=ehost-live&scope=site UR - jzemla@brown.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-44648-001 AN - 2015-44648-001 AU - Nelson, Justin M. AU - McKinley, R. Andy AU - McIntire, Lindsey K. AU - Goodyear, Chuck AU - Walters, Craig T1 - Augmenting visual search performance with transcranial direct current stimulation (tDCS). JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2015/11// VL - 27 IS - 6 SP - 335 EP - 347 CY - US PB - Educational Publishing Foundation SN - 0899-5605 SN - 1532-7876 AD - McKinley, R. Andy, 711th HPW, Applied Neuroscience Branch, U.S. Air Force Research Laboratory, Wright-Patterson AFB, 2510 Fifth Street, Building 840, OH, US, 45433 N1 - Accession Number: 2015-44648-001. Partial author list: First Author & Affiliation: Nelson, Justin M.; Infoscitex Inc., Dayton, OH, US. Other Publishers: Lawrence Erlbaum; Taylor & Francis. Release Date: 20150928. Correction Date: 20151109. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Eye Movements; Military Personnel; Sustained Attention; Transcranial Magnetic Stimulation; Visual Search. Minor Descriptor: Eye (Anatomy); Vigilance. Classification: Military Psychology (3800); Visual Perception (2323). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Vigilance Task; Visual Search Task; Driving Task. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 13. Issue Publication Date: Nov, 2015. Publication History: First Posted Date: Sep 28, 2015; Accepted Date: Jun 22, 2015; Revised Date: Jun 3, 2015; First Submitted Date: Feb 18, 2015. AB - Military personnel endure rigorous and demanding man-hours designated to monitoring and locating targets in tasks such as cyber defense and Unmanned Aerial Vehicle (UAV) operators. These tasks are monotonous and repetitive, which can result in vigilance decrement. The objective of the study was to implement a form of noninvasive brain stimulation known as transcranial DC stimulation (tDCS) over the left frontal eye field (LFEF) region of the scalp to improve cognitive performance. The participants received anodal and cathodal stimulation of 2 mA for 30 min as well as placebo stimulation on 3 separate days while performing the task. The findings suggest that anodal and cathodal stimulation significantly improves detection accuracy. Also, a correlation was detected between percent of eye closure (PERCLOS) and blinking frequency in relation to stimulation condition. Our data suggest that tDCS over the LFEF would be a beneficial countermeasure to mitigate the vigilance decrement and improve visual search performance. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - vigilance KW - frontal eye field (FEF) KW - percent of eye closure (PERCLOS) KW - sustained attention KW - transcranial DC stimulation (tDCS) KW - 2015 KW - Eye Movements KW - Military Personnel KW - Sustained Attention KW - Transcranial Magnetic Stimulation KW - Visual Search KW - Eye (Anatomy) KW - Vigilance KW - 2015 DO - 10.1037/mil0000085 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-44648-001&site=ehost-live&scope=site UR - UR - ORCID: 0000-0003-3092-4805 UR - richard.mckinley.2@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-57184-007 AN - 2015-57184-007 AU - Martin, Sarah E. AU - Drake, Emily AU - Yoder, Laura AU - Gibson, Mary AU - Litke, Carrie Ann T1 - Active duty women’s perceptions of breast-feeding support in the military setting. JF - Military Medicine JO - Military Medicine JA - Mil Med Y1 - 2015/11// VL - 180 IS - 11 SP - 1154 EP - 1160 CY - US PB - Assn of Military Surgeons of the US SN - 0026-4075 SN - 1930-613X AD - Martin, Sarah E., United States Air Force, 728 Vandenberg Drive, Biloxi, MS, US, 39531 N1 - Accession Number: 2015-57184-007. PMID: 26540707 Partial author list: First Author & Affiliation: Martin, Sarah E.; United States Air Force, Biloxi, MS, US. Release Date: 20160915. Correction Date: 20170302. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Breast Feeding; Health Promotion; Military Psychology; Working Women. Minor Descriptor: Human Females; Mothers. Classification: Promotion & Maintenance of Health & Wellness (3365); Military Psychology (3800). Population: Human (10); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Workplace Breastfeeding Support Scale. Methodology: Empirical Study; Quantitative Study. Page Count: 7. Issue Publication Date: Nov, 2015. Copyright Statement: All rights reserved. Association of Military Surgeons of the U.S. AB - Background: The purpose of this study is to evaluate the current perceptions of breast-feeding support for active duty women serving in the U.S. Armed Forces. Methods: An online survey based on the Workplace Breastfeeding Support Scale (WBSS) was used to collect data from active duty military mothers. Data were collected and analyzed using SPSS software to evaluate active duty women’s perceptions of breast-feeding support in the military. Results: 318 active duty women participated in the online survey. The average WBSS scores for active duty women was 50.20 (SD = 15.75). Comparing WBSS scores and branch of service, women in the Army had significantly lower WBSS scores (M = 45.85) then women in the Air Force (M = 53.96, p < 0.001). Enlisted women had significantly lower scores (M = 47.12) than officers (M = 54.62, p < 0.001). Also noted were significantly lower scores of active duty women who were Hispanic (M = 44.30) and women who had lower levels of education (M = 46.90, p = 0.006). Conclusions: The Department of Defense may be able to improve breast-feeding rates for all active duty mothers by implementing and adhering to lactation policies and focusing support efforts for enlisted women in all branches of service. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - breast-feeding support KW - active duty women KW - military mothers KW - lactation policies KW - 2015 KW - Breast Feeding KW - Health Promotion KW - Military Psychology KW - Working Women KW - Human Females KW - Mothers KW - 2015 DO - 10.7205/MILMED-D-14-00498 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-57184-007&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Mohsin Ahmed AU - Mohamad Khawaja AU - Marco Notarianni AU - Bei Wang AU - Dayle Goding AU - Bharati Gupta AU - John J Boeckl AU - Arash Takshi AU - Nunzio Motta AU - Stephen E Saddow AU - Francesca Iacopi T1 - A thin film approach for SiC-derived graphene as an on-chip electrode for supercapacitors. JO - Nanotechnology JF - Nanotechnology Y1 - 2015/10/30/ VL - 26 IS - 43 M3 - Article SP - 1 EP - 1 SN - 09574484 AB - We designed a nickel-assisted process to obtain graphene with sheet resistance as low as 80 Ω square−1 from silicon carbide films on Si wafers with highly enhanced surface area. The silicon carbide film acts as both a template and source of graphitic carbon, while, simultaneously, the nickel induces porosity on the surface of the film by forming silicides during the annealing process which are subsequently removed. As stand-alone electrodes in supercapacitors, these transfer-free graphene-on-chip samples show a typical double-layer supercapacitive behaviour with gravimetric capacitance of up to 65 F g−1. This work is the first attempt to produce graphene with high surface area from silicon carbide thin films for energy storage at the wafer-level and may open numerous opportunities for on-chip integrated energy storage applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Nanotechnology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL KW - RESEARCH KW - GRAPHENE KW - SILICON carbide films KW - ANNEALING of glass KW - GRAVIMETRIC analysis N1 - Accession Number: 110275191; Mohsin Ahmed 1 Mohamad Khawaja 2 Marco Notarianni 2,3,4 Bei Wang 1 Dayle Goding 1 Bharati Gupta 3 John J Boeckl 5 Arash Takshi 2 Nunzio Motta 3 Stephen E Saddow 2 Francesca Iacopi 1; Email Address: f.iacopi@griffith.edu.au; Affiliation: 1: Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, QLD, Australia 2: Electrical Engineering Department, University of South Florida, Tampa, FL, USA 3: Institute for Future Environments, Queensland University of Technology, Brisbane, QLD, Australia 4: Plasma-Therm LLC, 10050 16th St North, St. Petersburg, FL 33716 USA 5: Wright-Patterson AFB, Air Force Research Laboratory, Dayton, OH, USA; Source Info: 10/30/2015, Vol. 26 Issue 43, p1; Subject Term: NICKEL; Subject Term: RESEARCH; Subject Term: GRAPHENE; Subject Term: SILICON carbide films; Subject Term: ANNEALING of glass; Subject Term: GRAVIMETRIC analysis; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0957-4484/26/43/434005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110275191&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Belyea, Dustin D. AU - Lucas, M. S. AU - Michel, E. AU - Horwath, J. AU - Miller, Casey W. T1 - Tunable magnetocaloric effect in transition metal alloys. JO - Scientific Reports JF - Scientific Reports Y1 - 2015/10/30/ M3 - Article SP - 15755 SN - 20452322 AB - The unpredictability of geopolitical tensions and resulting supply chain and pricing instabilities make it imperative to explore rare earth free magnetic materials. As such, we have investigated fully transition metal based 'high entropy alloys' in the context of the magnetocaloric effect. We find the NiFeCoCrPdx family exhibits a second order magnetic phase transition whose critical temperature is tunable from 100 K to well above room temperature. The system notably displays changes in the functionality of the magnetic entropy change depending on x, which leads to nearly 40% enhancement of the refrigerant capacity. A detailed statistical analysis of the universal scaling behavior provides direct evidence that heat treatment and Pd additions reduce the distribution of exchange energies in the system, leading to a more magnetically homogeneous alloy. The general implications of this work are that the parent NiFeCoCr compound can be tuned dramatically with FCC metal additives. Together with their relatively lower cost, their superior mechanical properties that aid manufacturability and their relative chemical inertness that aids product longevity, NiFeCoCr-based materials could ultimately lead to commercially viable magnetic refrigerants. [ABSTRACT FROM AUTHOR] AB - Copyright of Scientific Reports is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETOCALORIC effects KW - TRANSITION metal alloys KW - HEAT treatment KW - MAGNETIC transitions KW - METALS -- Mechanical properties N1 - Accession Number: 110645268; Belyea, Dustin D. 1 Lucas, M. S. Michel, E. Horwath, J. 2 Miller, Casey W. 3; Affiliation: 1: Department of Physics, University of South Florida, 4202 East Fowler Ave, Tampa, FL 33620 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 3: School of Chemistry and Materials Science, Rochester Institute of Technology, 85 Lomb Memorial Drive, Rochester, NY 14623.; Source Info: 10/30/2015, p15755; Subject Term: MAGNETOCALORIC effects; Subject Term: TRANSITION metal alloys; Subject Term: HEAT treatment; Subject Term: MAGNETIC transitions; Subject Term: METALS -- Mechanical properties; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 1p; Document Type: Article L3 - 10.1038/srep15755 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110645268&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tang, Zhi AU - Senkov, Oleg N. AU - Parish, Chad M. AU - Zhang, Chuan AU - Zhang, Fan AU - Santodonato, Louis J. AU - Wang, Gongyao AU - Zhao, Guangfeng AU - Yang, Fuqian AU - Liaw, Peter K. T1 - Tensile ductility of an AlCoCrFeNi multi-phase high-entropy alloy through hot isostatic pressing (HIP) and homogenization. JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2015/10/28/ VL - 647 M3 - Article SP - 229 EP - 240 SN - 09215093 AB - The microstructure and phase composition of an AlCoCrFeNi high-entropy alloy (HEA) were studied in as-cast (AlCoCrFeNi-AC, AC represents as-cast) and homogenized (AlCoCrFeNi-HP, HP signifies hot isostatic pressed and homogenized) conditions. The AlCoCrFeNi-AC ally has a dendritric structure in the consisting primarily of a nano-lamellar mixture of A2 (disordered body-centered-cubic (BCC)) and B2 (ordered BCC) phases, formed by an eutectic reaction. The homogenization heat treatment, consisting of hot isostatic pressed for 1 h at 1100 °C, 207 MPa and annealing at 1150 °C for 50 h, resulted in an increase in the volume fraction of the A1 phase and formation of a Sigma (σ) phase. Tensile properties in as-cast and homogenized conditions are reported at 700 °C. The ultimate tensile strength was virtually unaffected by heat treatment, and was 396±4 MPa at 700 °C. However, homogenization produced a noticeable increase in ductility. The AlCoCrFeNi-AC alloy showed a tensile elongation of only 1.0%, while after the heat-treatment, the elongation of AlCoCrFeNi-HP was 11.7%. Thermodynamic modeling of non-equilibrium and equilibrium phase diagrams for the AlCoCrFeNi HEA gave good agreement with the experimental observations of the phase contents in the AlCoCrFeNi-AC and AlCoCrFeNi-HP. The reasons for the improvement of ductility after the heat treatment and the crack initiation subjected to tensile loading were discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DUCTILITY KW - TENSILE strength KW - ALUMINUM alloys KW - ISOSTATIC pressing KW - ENTROPY KW - Crack initiation KW - Heat treatment KW - High-entropy alloys KW - Microstructures KW - Tensile properties KW - Thermodynamic modeling N1 - Accession Number: 110253453; Tang, Zhi 1,2; Email Address: Zhi.Tang@alcoa.com Senkov, Oleg N. 3 Parish, Chad M. 4 Zhang, Chuan 5 Zhang, Fan 5 Santodonato, Louis J. 1,4 Wang, Gongyao 1 Zhao, Guangfeng 6 Yang, Fuqian 6 Liaw, Peter K. 1; Email Address: pliaw@utk.edu; Affiliation: 1: Department of Materials Science and Engineering, The University of Tennessee, Knoxville, TN 37996, USA 2: Department of Materials Science and Engineering, Virginia Tech, Blacksburg, VA 24061, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 4: Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA 5: CompuTherm LLC, 437 S. Yellowstone Dr., Suite 217, Madison, WI 53719, USA 6: Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, USA; Source Info: Oct2015, Vol. 647, p229; Subject Term: DUCTILITY; Subject Term: TENSILE strength; Subject Term: ALUMINUM alloys; Subject Term: ISOSTATIC pressing; Subject Term: ENTROPY; Author-Supplied Keyword: Crack initiation; Author-Supplied Keyword: Heat treatment; Author-Supplied Keyword: High-entropy alloys; Author-Supplied Keyword: Microstructures; Author-Supplied Keyword: Tensile properties; Author-Supplied Keyword: Thermodynamic modeling; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.msea.2015.08.078 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110253453&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Voevodin, Andrey A. AU - Waite, Adam R. AU - Bultman, John E. AU - Hu, Jianjun AU - Muratore, Christopher T1 - Magnetic field argon ion filtering for pulsed magnetron sputtering growth of two-dimensional MoS2. JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2015/10/25/ VL - 280 M3 - Article SP - 260 EP - 267 SN - 02578972 AB - Plasma assisted physical vapor deposition processes can provide alternative and scalable approaches for synthesis of two-dimensional (2D) materials. While plasma species with high kinetic energies and chemical activities are beneficial for reduced temperature growth of crystalline 2D layers, precise control of these characteristics for reduced defect generation under ion bombardment is one of the main challenges for plasma assisted growth processes. In this study a variable intensity magnetic field was used to control chemistry, energy, and spatial density distribution of plasma produced by pulsed magnetron sputtering of MoS 2 in 2.0 Pa argon. A magnetic coil was used to deflect plasma flux and control electron and ion densities at the substrate surface. Plasma emission and mass-spectrometry studies showed the abundance of excited neutrals and positive ions of Ar, Mo and S with no evidence for MoS radicals and negative S ions. Ar 1 + abundance was several orders of magnitude above that of Mo 1 + and S 1 + and argon ions were therefore the primary source of the substrate bombardment. Wavelength specific plasma imaging and mass/energy analysis demonstrated that the tunable magnetic field can effectively steer ionized Ar species away from the substrate with about a factor of three reduction of their abundance at the condensation surface. Spatial distributions of sputtered Mo and S species were also influenced but to a different degree, which was dependent on their ionization state. Tunable magnetic filtering helped to reduce unnecessary Ar bombardment by maintaining incident ion energies < 8 eV to minimize point defect generation in hexagonal 2D MoS 2 films. The argon ion filtering approach was verified by producing three monolayer thick polycrystalline 2D MoS 2 films over wafer-scale areas allowing for a scalable direct synthesis needed for device manufacturing. [ABSTRACT FROM AUTHOR] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC fields KW - ARGON KW - TWO-dimensional models KW - MOLYBDENUM sulfides KW - MAGNETRON sputtering KW - Magnetic filtering KW - Plasma characterization KW - Pulsed sputtering KW - Two-dimensional film growth N1 - Accession Number: 110324486; Voevodin, Andrey A. 1; Email Address: andrey.voevodin@unt.edu Waite, Adam R. 1,2 Bultman, John E. 1,3 Hu, Jianjun 1,3 Muratore, Christopher 1,4; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: Universal Technology Corporation, Beavercreek, OH 45432, USA 3: University of Dayton Research Institute, Dayton, OH 45469, USA 4: University of Dayton, Dayton, OH 45409, USA; Source Info: Oct2015, Vol. 280, p260; Subject Term: MAGNETIC fields; Subject Term: ARGON; Subject Term: TWO-dimensional models; Subject Term: MOLYBDENUM sulfides; Subject Term: MAGNETRON sputtering; Author-Supplied Keyword: Magnetic filtering; Author-Supplied Keyword: Plasma characterization; Author-Supplied Keyword: Pulsed sputtering; Author-Supplied Keyword: Two-dimensional film growth; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.surfcoat.2015.09.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110324486&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Ling AU - Gutierrez-Cuevas, Karla G. AU - Bisoyi, Hari Krishna AU - Xiang, Jie AU - Singh, Gautam AU - Zola, Rafael S. AU - Kumar, Satyendra AU - Lavrentovich, Oleg D. AU - Urbas, Augustine AU - Li, Quan T1 - NIR light-directing self-organized 3D photonic superstructures loaded with anisotropic plasmonic hybrid nanorods. JO - Chemical Communications JF - Chemical Communications Y1 - 2015/10/18/ VL - 51 IS - 81 M3 - Article SP - 15039 EP - 15042 SN - 13597345 AB - Self-organized 3D photonic superstructures loaded with plasmonic hybrid nanorods were found to undergo structural transformation from body-centered cubic to simple cubic upon NIR-light irradiation resulting from the “photothermal effect” of gold nanorods. Furthermore, dynamic NIR light-directed red, green and blue reflections of the nanocomposites were demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemical Communications is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTONIC crystals KW - NANORODS KW - ANISOTROPY KW - NEAR infrared radiation KW - BODY-centered cubic metals KW - PHASE transformations (Physics) N1 - Accession Number: 110097458; Wang, Ling 1 Gutierrez-Cuevas, Karla G. 1 Bisoyi, Hari Krishna 1 Xiang, Jie 1 Singh, Gautam 2 Zola, Rafael S. 3 Kumar, Satyendra 2 Lavrentovich, Oleg D. 1 Urbas, Augustine 4 Li, Quan 1; Affiliation: 1: Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, Kent, Ohio 44242, USA 2: Department of Physics, Kent State University, Kent, Ohio 44242, USA 3: Departamento de Física, Universidade Tecnológica Federal do Paraná-Apucarana, PR, 86812-460, Brazil 4: Materials and Manufacturing Directorate, Air Force research Laboratory, WPAFB, Dayton, Ohio 45433, USA; Source Info: 10/18/2015, Vol. 51 Issue 81, p15039; Subject Term: PHOTONIC crystals; Subject Term: NANORODS; Subject Term: ANISOTROPY; Subject Term: NEAR infrared radiation; Subject Term: BODY-centered cubic metals; Subject Term: PHASE transformations (Physics); Number of Pages: 4p; Document Type: Article L3 - 10.1039/c5cc06146f UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110097458&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ali, S. AU - Lantz-Mc-Peak, S. AU - Robinson, B. AU - Rosas_Hernandez, H. AU - Gonzalez, C. AU - Trickler, W. AU - Hussain, S. T1 - Engineered Metallic Nanoparticles: Pro-inflammatory response and effects on integrity of Blood–Brain–Barrier. JO - Toxicology Letters JF - Toxicology Letters Y1 - 2015/10/16/Oct2015 Supplement VL - 238 M3 - Article SP - S45 EP - S46 SN - 03784274 KW - METAL nanoparticles KW - BLOOD-brain barrier KW - IMMUNE response KW - CELL-mediated cytotoxicity KW - BIOACCUMULATION KW - ENDOTHELIAL cells KW - ENVIRONMENTAL aspects N1 - Accession Number: 110008298; Ali, S. 1 Lantz-Mc-Peak, S. 1 Robinson, B. 1 Rosas_Hernandez, H. 1 Gonzalez, C. 2 Trickler, W. 1 Hussain, S. 3; Affiliation: 1: NCTR, Division of Neurotoxicology, Jefferson, United States 2: Universidad Autonoma de San Lois Potosi, Coordinacion para la Innovacion y la Aplicacion de la Ciencia y la Tecnologia, San Luis Potosi, Mexico, Mexico 3: WP Air Force Research Laboratory, Applied Biotechnology Branch, Human Effectiveness Directorate, AFB, OH, United States; Source Info: Oct2015 Supplement, Vol. 238, pS45; Subject Term: METAL nanoparticles; Subject Term: BLOOD-brain barrier; Subject Term: IMMUNE response; Subject Term: CELL-mediated cytotoxicity; Subject Term: BIOACCUMULATION; Subject Term: ENDOTHELIAL cells; Subject Term: ENVIRONMENTAL aspects; Number of Pages: 1p; Document Type: Article L3 - 10.1016/j.toxlet.2015.08.126 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110008298&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Borkar, Tushar AU - Mohseni, Hamidreza AU - Hwang, Junyeon AU - Scharf, Thomas W. AU - Tiley, Jaimie S. AU - Hong, Soon H. AU - Banerjee, Rajarshi T1 - Excellent strength–ductility combination in nickel-graphite nanoplatelet (GNP/Ni) nanocomposites. JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2015/10/15/ VL - 646 M3 - Article SP - 135 EP - 144 SN - 09258388 AB - While multiple recent reports have demonstrated enormous enhancements in yield strength in metal matrix nanocomposites reinforced with carbon nanotubes and graphite nanoplatelets (GNP), such composites typically exhibit drastic reductions in tensile ductility. Mechanical mixing of nickel (Ni) powders and GNP powders, followed by spark plasma sintering (SPS), has been used to develop a new class of GNP/Ni nanocomposites that exhibit huge enhancements in tensile yield strength while preserving good ductility. Thus, a Ni-1GNP (1 vol.% GNP) nanocomposite exhibited a tensile yield strength of 370 MPa (about 2.5 times of SPS processed monolithic nickel ∼160 MPa) and an elongation to failure ∼ 40%. Interestingly, while a higher volume fraction of GNPs, such as Ni-2.5GNP (2.5 vol.% GNP) exhibited an enhancement in tensile yield strength due to grain refinement, there was a significant reduction in ductility ∼10%, primarily due to agglomeration of GNPs. The enhancement in the tensile strength and ductility of the Ni-1GNP nanocomposite can be attributed to combined effect of homogeneous dispersion of GNPs and grain refinement, the relative influence of each of these effects has been quantitatively assessed in this paper. Additionally, the strong metal-GNP interfacial bonding helps effectively transfer load across the GNP/metal interface during tensile deformation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRENGTH of materials KW - DUCTILITY KW - NANOCOMPOSITE materials KW - CHEMICAL yield KW - CHEMICAL reduction KW - Mechanical properties KW - Metal matrix composites KW - Microstructure KW - Powder metallurgy KW - Sintering KW - Transmission electron microscopy (TEM) N1 - Accession Number: 109317803; Borkar, Tushar 1 Mohseni, Hamidreza 1 Hwang, Junyeon 2 Scharf, Thomas W. 1 Tiley, Jaimie S. 3 Hong, Soon H. 4 Banerjee, Rajarshi 1; Email Address: Rajarshi.Banerjee@unt.edu; Affiliation: 1: Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203, USA 2: Institute of Advanced Composite Materials, Korea Institute of Science and Technology, Jeonbuk 565-905, Republic of Korea 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH 45433, USA 4: Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305- 701, Republic of Korea; Source Info: Oct2015, Vol. 646, p135; Subject Term: STRENGTH of materials; Subject Term: DUCTILITY; Subject Term: NANOCOMPOSITE materials; Subject Term: CHEMICAL yield; Subject Term: CHEMICAL reduction; Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Metal matrix composites; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Powder metallurgy; Author-Supplied Keyword: Sintering; Author-Supplied Keyword: Transmission electron microscopy (TEM); Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.jallcom.2015.06.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109317803&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - de León, Arxel AU - Arias, Eduardo AU - Moggio, Ivana AU - Gallardo-Vega, Carlos AU - Ziolo, Ronald AU - Rodríguez, Oliverio AU - Trigari, Silvana AU - Giorgetti, Emilia AU - Leibig, Carl AU - Evans, Dean T1 - Synthesis of mercaptopropyl-(phenylene)s-benzoates passivated gold nanoparticles: Implications for plasmonic photovoltaic cells. JO - Journal of Colloid & Interface Science JF - Journal of Colloid & Interface Science Y1 - 2015/10/15/ VL - 456 M3 - Article SP - 182 EP - 189 SN - 00219797 AB - The incorporation of gold nanoparticles in heterojunction solar cells is expected to increase the efficiency due to plasmon effects, but the literature studies are sometimes controversial. In this work, gold nanoparticles passivated with (Ph) n –(CH 2 ) 3 SH ( n = 1, 2, 3) have been synthesized by reduction of tetrachloroauric acid with sodium borohydride in two ways: (1) one-phase where both the thiol and the gold salt are solubilized in a mixture of methanol with acetic acid: Au-s-(Ph) n or (2), two-phase, using tetraoctylammonium bromide (TOAB) to transfer gold from water to toluene where the thiol is solubilized, Au(TOAB)-s-(Ph) n . The morphological, experimental and simulated optical properties were studied and analyzed as a function of the thiol and of the synthetic procedure in order to correlate them with the efficiency of plasmonic hybrid solar cells in the following configuration ITO/PEDOT:PSS/P3HT:PCBM-C60:Au-nanoparticles/Field’s metal, where PEDOT:PSS is poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate), P3HT is poly(3-hexylthiophene-2,5-diyl) and PCBM-C60 is [6,6]-Phenyl C61 butyric acid methyl ester. Our findings indicate that the gold nanoparticles incorporation is affecting the electrical properties of the active layer giving a maximum efficiency for Au-s-(Ph) 3 . Moreover, TOAB, which is usually used in the synthesis of thiol passivated gold nanoparticles, has negative effects in both plasmonic and electrical properties. This result is important for optoelectronic applications of gold nanoparticles prepared with any procedures that involve TOAB. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Colloid & Interface Science is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHENYLENE compounds -- Synthesis KW - BENZOATES -- Synthesis KW - PASSIVATION KW - GOLD nanoparticles -- Synthesis KW - PHOTOVOLTAIC cells KW - AFM KW - EFM KW - Nanoparticles KW - Optical properties KW - Simulation KW - Solar cells KW - Tetraoctylammonium bromide N1 - Accession Number: 103724493; de León, Arxel 1; Email Address: arxelbmx@gmail.com Arias, Eduardo 1; Email Address: eduardo.arias@ciqa.edu.mx Moggio, Ivana 1; Email Address: ivana.moggio@ciqa.edu.mx Gallardo-Vega, Carlos 1; Email Address: carlos.gallardo@ciqa.edu.mx Ziolo, Ronald 1; Email Address: rziolo@cs.com Rodríguez, Oliverio 1; Email Address: oliverio.rodriguez@ciqa.edu.mx Trigari, Silvana 2; Email Address: silvana.trigari@isc.cnr.it Giorgetti, Emilia 2; Email Address: emilia.giorgetti@fi.isc.cnr.it Leibig, Carl 3; Email Address: carl.liebig.1@us.af.mil Evans, Dean 3; Email Address: dean.evans@us.af.mil; Affiliation: 1: Centro de Investigación en Química Aplicada, Boulevard Enrique Reyna 140, 25294 Saltillo, Coahuila, Mexico 2: Istituto dei Sistemi Complessi, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright–Patterson Air Force Base, OH 45433, USA; Source Info: Oct2015, Vol. 456, p182; Subject Term: PHENYLENE compounds -- Synthesis; Subject Term: BENZOATES -- Synthesis; Subject Term: PASSIVATION; Subject Term: GOLD nanoparticles -- Synthesis; Subject Term: PHOTOVOLTAIC cells; Author-Supplied Keyword: AFM; Author-Supplied Keyword: EFM; Author-Supplied Keyword: Nanoparticles; Author-Supplied Keyword: Optical properties; Author-Supplied Keyword: Simulation; Author-Supplied Keyword: Solar cells; Author-Supplied Keyword: Tetraoctylammonium bromide; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jcis.2015.06.029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103724493&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yan, Bokai AU - Caflisch, Russel E. AU - Barekat, Farzin AU - Cambier, Jean-Luc T1 - Analysis and simulation for a model of electron impact excitation/deexcitation and ionization/recombination. JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2015/10/15/ VL - 299 M3 - Article SP - 747 EP - 786 SN - 00219991 AB - This paper describes a kinetic model and a corresponding Monte Carlo simulation method for excitation/deexcitation and ionization/recombination by electron impact in a plasma free of external fields. The atoms and ions in the plasma are represented by continuum densities and the electrons by a particle distribution. A Boltzmann-type equation is formulated and a corresponding H-theorem is formally derived. An efficient Monte Carlo method is developed for an idealized analytic model of the excitation and ionization collision cross sections. To accelerate the simulation, the reduced rejection method and binary search method are used to overcome the singular rate in the recombination process. Numerical results are presented to demonstrate the efficiency of the method on spatially homogeneous problems. The evolution of the electron distribution function and atomic states is studied, revealing the possibility under certain circumstances of system relaxation towards stationary states that are not the equilibrium states, a potential non-ergodic behavior. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIMULATION methods & models KW - ELECTRONIC excitation KW - ELECTRON impact ionization KW - BOLTZMANN'S equation KW - CONTINUUM (Mathematics) KW - Boltzmann equation KW - Excitation–deexcitation KW - H theorem KW - Ionization–recombination KW - Monte Carlo method KW - Singular reaction rates N1 - Accession Number: 108985904; Yan, Bokai 1; Email Address: byan@math.ucla.edu Caflisch, Russel E. 1; Email Address: caflisch@math.ucla.edu Barekat, Farzin 1; Email Address: fbarekat@math.ucla.edu Cambier, Jean-Luc 2; Email Address: jean_luc.cambier@us.af.mil; Affiliation: 1: Mathematics Department, University of California at Los Angeles, Los Angeles, CA 90095-1555, USA 2: Air Force Research Laboratory, Edwards AFB, CA 93524, USA; Source Info: Oct2015, Vol. 299, p747; Subject Term: SIMULATION methods & models; Subject Term: ELECTRONIC excitation; Subject Term: ELECTRON impact ionization; Subject Term: BOLTZMANN'S equation; Subject Term: CONTINUUM (Mathematics); Author-Supplied Keyword: Boltzmann equation; Author-Supplied Keyword: Excitation–deexcitation; Author-Supplied Keyword: H theorem; Author-Supplied Keyword: Ionization–recombination; Author-Supplied Keyword: Monte Carlo method; Author-Supplied Keyword: Singular reaction rates; Number of Pages: 40p; Document Type: Article L3 - 10.1016/j.jcp.2015.07.027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108985904&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2015-29943-001 AN - 2015-29943-001 AU - Shea, Chloe J. A. AU - Carhuatanta, Kimberly A. K. AU - Wagner, Jessica AU - Bechmann, Naomi AU - Moore, Raquel AU - Herman, James P. AU - Jankord, Ryan T1 - Variable impact of chronic stress on spatial learning and memory in BXD mice. JF - Physiology & Behavior JO - Physiology & Behavior JA - Physiol Behav Y1 - 2015/10/15/ VL - 150 SP - 69 EP - 77 CY - Netherlands PB - Elsevier Science SN - 0031-9384 AD - Jankord, Ryan, Wright–Patterson AFB, 711thHuman Performance Wing, OH, US, 45433 N1 - Accession Number: 2015-29943-001. PMID: 26079812 Partial author list: First Author & Affiliation: Shea, Chloe J. A.; Air Force Research Laboratory, Wright–Patterson AFB, OH, US. Release Date: 20150706. Correction Date: 20150907. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Animal Learning; Chronic Stress; Spatial Learning; Spatial Memory. Minor Descriptor: Mice. Classification: Physiological Processes (2540). Population: Animal (20). Tests & Measures: Stress Paradigm; Morris Water Maze Test. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 9. Issue Publication Date: Oct 15, 2015. Publication History: First Posted Date: Jun 14, 2015; Accepted Date: Jun 11, 2015; Revised Date: Jun 4, 2015; First Submitted Date: Oct 14, 2014. AB - The effects of chronic stress on learning are highly variable across individuals. This variability stems from gene–environment interactions. However, the mechanisms by which stress affects genetic predictors of learning are unclear. Thus, we aim to determine whether the genetic pathways that predict spatial memory performance are altered by previous exposure to chronic stress. Sixty-two BXD recombinant inbred strains of mice, as well as parent strains C57BL/6J and DBA/2J, were randomly assigned as behavioral control or to a chronic variable stress paradigm and then underwent behavioral testing to assess spatial memory and learning performance using the Morris water maze. Quantitative trait loci (QTL) mapping was completed for average escape latency times for both control and stress animals. Loci on chromosomes 5 and 10 were found in both control and stress environmental populations; eight additional loci were found to be unique to either the control or stress environment. In sum, results indicate that certain genetic loci predict spatial memory performance regardless of prior stress exposure, while exposure to stress also reveals unique genetic predictors of training during the memory task. Thus, we find that genetic predictors contributing to spatial learning and memory are susceptible to the presence of chronic stress. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - BXD KW - QTL KW - Stress KW - Spatial learning KW - Spatial memory KW - Genetics KW - 2015 KW - Animal Learning KW - Chronic Stress KW - Spatial Learning KW - Spatial Memory KW - Mice KW - 2015 U1 - Sponsor: US Air Force Office of Scientific Research/Air Force Research Laboratory (AFRL)), US. Grant: 14RH08COR. Recipients: No recipient indicated DO - 10.1016/j.physbeh.2015.06.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-29943-001&site=ehost-live&scope=site UR - Ryan.Jankord@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Fajardo, Mario E. AU - Molek, Christopher D. AU - Vesely, Annamaria L. T1 - Coherent optical transients observed in rubidium atomic line filtered Doppler velocimetry experiments. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2015/10/14/ VL - 118 IS - 14 M3 - Article SP - 144901-1 EP - 144901-12 PB - American Institute of Physics SN - 00218979 AB - We report the first successful results from our novel Rubidium Atomic Line Filtered (RALF) Doppler velocimetry apparatus, along with unanticipated oscillatory signals due to coherent optical transients generated within pure Rb vapor cells. RALF is a high-velocity and high-acceleration extension of the well-known Doppler Global Velocimetry (DGV) technique for constructing multi-dimensional flow velocity vector maps in aerodynamics experiments [H. Komine, U.S. Patent No. 4,919,536 (24 April 1990)]. RALF exploits the frequency dependence of pressure-broadened Rb atom optical absorptions in a heated Rb/N2 gas cell to encode the Doppler shift of reflected near-resonant (λ0≈780.24 nm) laser light onto the intensity transmitted by the cell. The present RALF apparatus combines fiber optic and free-space components and was built to determine suitable operating conditions and performance parameters for the Rb/N2 gas cells. It yields single-spot velocities of thin laser-driven-flyer test surfaces and incorporates a simultaneous Photonic Doppler Velocimetry (PDV) channel [Strand et al., Rev. Sci. Instrum. 77, 083108 (2006)] for validation of the RALF results, which we demonstrate here over the v=0 to 1 km/s range. Both RALF and DGV presume the vapor cells to be simple Beer's Law optical absorbers, so we were quite surprised to observe oscillatory signals in experiments employing low pressure pure Rb vapor cells. We interpret these oscillations as interference between the Doppler shifted reflected light and the Free Induction Decay (FID) coherent optical transient produced within the pure Rb cells at the original laser frequency; this is confirmed by direct comparison of the PDV and FID signals. We attribute the different behaviors of the Rb/N2 vs. Rb gas cells to efficient dephasing of the atomic/optical coherences by Rb-N2 collisions. The minimum necessary N2 buffer gas density ≈0.3 amagat translates into a smallest useful velocity range of 0 to 2 km/s, which can readily be extended to cover the 0 to 10 km/s range, and beyond. The recognition that coherent optical transients can be produced within low pressure vapor cells during velocimetry experiments may offer new insights into some quantitative discrepancies reported in earlier DGV studies. Future plans include "line-RALF" experiments with streak camera detection, and two-dimensional surface velocity mapping using pulsed laser illumination and/or gated intensified CCD camera detection. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COHERENT states KW - RUBIDIUM isotopes KW - TRANSIENTS (Electricity) KW - OSCILLATING chemical reactions KW - DOPPLER echocardiography KW - TRANSIENT analysis KW - FLOW velocity N1 - Accession Number: 110348946; Fajardo, Mario E. 1; Email Address: mario.fajardo@eglin.af.mil Molek, Christopher D. 1 Vesely, Annamaria L. 1; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Ordnance Division, Energetic Materials Branch, AFRL/RWME, 2306 Perimeter Road, Eglin AFB, Florida 32542-5910, USA; Source Info: 2015, Vol. 118 Issue 14, p144901-1; Subject Term: COHERENT states; Subject Term: RUBIDIUM isotopes; Subject Term: TRANSIENTS (Electricity); Subject Term: OSCILLATING chemical reactions; Subject Term: DOPPLER echocardiography; Subject Term: TRANSIENT analysis; Subject Term: FLOW velocity; Number of Pages: 12p; Illustrations: 1 Diagram, 1 Chart, 10 Graphs; Document Type: Article L3 - 10.1063/1.4932670 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110348946&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roth, Caleb C. AU - Barnes Jr., Ronald A. AU - Ibey, Bennett L. AU - Beier, Hope T. AU - Mimun, L. Christopher AU - Maswadi, Saher M. AU - Shadaram, Mehdi AU - Glickman, Randolph D. T1 - Characterization of Pressure Transients Generated by Nanosecond Electrical Pulse (nsEP) Exposure. JO - Scientific Reports JF - Scientific Reports Y1 - 2015/10/09/ M3 - Article SP - 1 EP - 15 SN - 20452322 AB - The mechanism(s) responsible for the breakdown (nanoporation) of cell plasma membranes after nanosecond pulse (nsEP) exposure remains poorly understood. Current theories focus exclusively on the electrical field, citing electrostriction, water dipole alignment and/or electrodeformation as the primary mechanisms for pore formation. However, the delivery of a high-voltage nsEP to cells by tungsten electrodes creates a multitude of biophysical phenomena, including electrohydraulic cavitation, electrochemical interactions, thermoelastic expansion, and others. To date, very limited research has investigated non-electric phenomena occurring during nsEP exposures and their potential effect on cell nanoporation. Of primary interest is the production of acoustic shock waves during nsEP exposure, as it is known that acoustic shock waves can cause membrane poration (sonoporation). Based on these observations, our group characterized the acoustic pressure transients generated by nsEP and determined if such transients played any role in nanoporation. In this paper, we show that nsEP exposures, equivalent to those used in cellular studies, are capable of generating high-frequency (2.5 MHz), high-intensity (>13 kPa) pressure transients. Using confocal microscopy to measure cell uptake of YO-PRO®-1 (indicator of nanoporation of the plasma membrane) and changing the electrode geometry, we determined that acoustic waves alone are not responsible for poration of the membrane. [ABSTRACT FROM AUTHOR] AB - Copyright of Scientific Reports is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROSTRICTION KW - RESEARCH KW - CELL membranes KW - SOUND pressure KW - SHOCK waves KW - SOUND waves N1 - Accession Number: 110328092; Roth, Caleb C. 1; Email Address: rothc@livemail.uthscsa.edu Barnes Jr., Ronald A. 2 Ibey, Bennett L. 3 Beier, Hope T. 4 Mimun, L. Christopher 5 Maswadi, Saher M. 2 Shadaram, Mehdi 2 Glickman, Randolph D. 6; Affiliation: 1: School of Medicine, Dept. of Radiological Sciences, University of Texas Health Science Center San Antonio, 7703 Floyd Curl Drive, San Antonio, Texas, USA 78229 2: Dept. of Electrical Engineering, University of Texas San Antonio, 1 UTSA Circle, San Antonio, Texas, USA 78249 3: Radio Frequency Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory, 4141 Petroleum Road, JBSA Fort Sam Houston, Texas, USA 78234 4: Optical Radiation Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory, 4141 Petroleum Road, JBSA Fort Sam Houston, Texas, USA 78234 5: Dept. of Physics, University of Texas San Antonio, 1 UTSA Circle, San Antonio, Texas, USA 78249 6: School of Medicine, Dept. of Ophthalmology, University of Texas Health Science Center San Antonio, 7703 Floyd Curl Drive, San Antonio, Texas, USA 78229; Source Info: 10/9/2015, p1; Subject Term: ELECTROSTRICTION; Subject Term: RESEARCH; Subject Term: CELL membranes; Subject Term: SOUND pressure; Subject Term: SHOCK waves; Subject Term: SOUND waves; Number of Pages: 15p; Document Type: Article L3 - 10.1038/srep15063 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110328092&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mayberry, C. S. AU - Danhong Huang AU - Balakrishnan, G. AU - Kouhestani, C. AU - Islam, N. AU - Brueck, S. R. J. AU - Sharma, A. K. T1 - Characterization of carrier transport properties in strained crystalline Si wall-like structures in the quasi-quantum regime. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2015/10/07/ VL - 118 IS - 13 M3 - Article SP - 134301-1 EP - 134301-11 PB - American Institute of Physics SN - 00218979 AB - We report the transport characteristics of both electrons and holes through narrow constricted crystalline Si "wall-like" long-channels that were surrounded by a thermally grown SiO2 layer. The strained buffering depth inside the Si region (due to Si/SiO2 interfacial lattice mismatch) is where scattering is seen to enhance some modes of the carrier-lattice interaction, while suppressing others, thereby changing the relative value of the effective masses of both electrons and holes, as compared to bulk Si. In the narrowest wall devices, a considerable increase in conductivity was observed as a result of higher carrier mobilities due to lateral constriction and strain. The strain effects, which include the reversal splitting of light- and heavy-hole bands as well as the decrease of conduction-band effective mass by reduced Si bandgap energy, are formulated in our microscopic model for explaining the experimentally observed enhancements in both conduction- and valence-band mobilities with reduced Si wall thickness. Also, the enhancements of the valence-band and conduction-band mobilities are found to be associated with different aspects of theoretical model. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALS KW - ELECTRONS KW - SILICON oxide KW - CONDUCTION band KW - ENERGY gaps (Physics) KW - VALENCE bands N1 - Accession Number: 110231208; Mayberry, C. S. 1 Danhong Huang 1; Email Address: danhong.huang@us.af.mil Balakrishnan, G. 2 Kouhestani, C. 1 Islam, N. 3 Brueck, S. R. J. 2,4 Sharma, A. K. 1,2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA 2: Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico 87106, USA 3: Department of Electrical and Computer Engineering, University of Missouri-Columbia, Columbia, Missouri 65211, USA 4: Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87106, USA; Source Info: 10/7/2015, Vol. 118 Issue 13, p134301-1; Subject Term: CRYSTALS; Subject Term: ELECTRONS; Subject Term: SILICON oxide; Subject Term: CONDUCTION band; Subject Term: ENERGY gaps (Physics); Subject Term: VALENCE bands; Number of Pages: 11p; Illustrations: 3 Black and White Photographs, 3 Diagrams, 2 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.4931151 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110231208&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Körmann, F. AU - Ma, D. AU - Belyea, D. D. AU - Lucas, M. S. AU - Miller, C. W. AU - Grabowski, B. AU - Sluiter, M. H. F. T1 - "Treasure maps" for magnetic high-entropy-alloys from theory and experiment. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2015/10/05/ VL - 107 IS - 14 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00036951 AB - The critical temperature and saturation magnetization for four- and five-component FCC transition metal alloys are predicted using a formalism that combines density functional theory and a magnetic mean-field model. Our theoretical results are in excellent agreement with experimental data presented in both this work and in the literature. The generality and power of this approach allow us to computationally design alloys with well-defined magnetic properties. Among other alloys, the method is applied to CoCrFeNiPd alloys, which have attracted attention recently for potential magnetic applications. The computational framework is able to predict the experimentally measured TC and to explore the dominant mechanisms for alloying trends with Pd. A wide range of ferromagnetic properties and Curie temperatures near room temperature in hitherto unexplored alloys is predicted in which Pd is replaced in varying degrees by, e.g., Ag, Au, and Cu. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC entropy KW - CRITICAL temperature (Chemistry) KW - MAGNETIZATION KW - TRANSITION metal alloys KW - DENSITY functional theory N1 - Accession Number: 110277772; Körmann, F. 1; Email Address: f.h.w.kormann@tudelft.nl Ma, D. 2 Belyea, D. D. 3 Lucas, M. S. 4 Miller, C. W. 5; Email Address: cwmsch@rit.edu Grabowski, B. 2 Sluiter, M. H. F. 1; Affiliation: 1: Department of Materials Science and Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands 2: Max-Planck-Institut für Eisenforschung GmbH, D-40237 Düsseldorf, Germany 3: Department of Physics, University of South Florida, 4202 East Fowler Ave., Tampa, Florida 33620, USA 4: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 5: School of Chemistry and Materials Science, Rochester Institute of Technology, 85 Lomb Memorial Drive, Rochester, New York 14623, USA; Source Info: 2015, Vol. 107 Issue 14, p1; Subject Term: MAGNETIC entropy; Subject Term: CRITICAL temperature (Chemistry); Subject Term: MAGNETIZATION; Subject Term: TRANSITION metal alloys; Subject Term: DENSITY functional theory; Number of Pages: 5p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.4932571 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110277772&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Poggie, Jonathan AU - Bisek, Nicholas J. AU - Gosse, Ryan T1 - Resolution effects in compressible, turbulent boundary layer simulations. JO - Computers & Fluids JF - Computers & Fluids Y1 - 2015/10/05/ VL - 120 M3 - Article SP - 0000 SN - 00457930 AB - This paper presents the first systematic study of resolution in compressible, turbulent boundary simulations, and the best-resolved simulation carried out to date. Direct numerical simulation (DNS) and wall-resolved, implicit large-eddy simulation (ILES-NWR) were carried out for a turbulent boundary layer at a Mach number of M = 2.3 and maximum momentum thickness Reynolds number of Re θ i = 2 × 10 3 . The wall temperature was fixed at a constant value corresponding to the nominal adiabatic wall temperature. The flow was developed spatially from a laminar boundary layer similarity solution specified at the inflow, and transition to turbulence was promoted with an artificial body force trip. The effects of spatial resolution in the range of ILES-NWR, conventional DNS, and very strict DNS were considered. The finest grid in the spatial resolution study consisted of 3.3 × 10 10 points, and maintained max ( Δ x 1 + , Δ x 2 + , Δ x 3 + ) ≤ 1 everywhere. With the resolution at the wall held at ( Δ x 2 + ) w < 1 , statistics characterizing large-scale flow features converged for max ( Δ x i + ) ≤ 10 , and agreed well with experimental data. Velocity spectra in the outer part of the boundary layer agreed well at low wavenumber for all grids in this range of mesh spacing, and increasing resolution acted to fill out the high-wavenumber end of the spectrum. In all cases, the resolved region of the spectrum agreed well with a well-validated model of the spectrum of isotropic turbulence. Thus, ILES-NWR can be concluded to converge seamlessly to DNS as the spatial resolution is increased. The low-wavenumber aspect of spatial resolution was examined by varying the width of the computational domain, with a fixed level of small-scale resolution. The primary influence of increasing domain width was to capture additional spectral content in low spanwise wavenumbers; other statistics were found to be identical. Further, turbulence statistics were found to be essentially independent of the domain width for values between two and eight times the maximum boundary layer thickness. This work predicts computationally, for the first time, the full velocity spectrum in the outer part of the boundary layer. In doing so, it justifies use of the ILES-NWR approach as long as the maximum grid spacing is less than 10 in inner units, and the domain width is at least two times the maximum boundary layer thickness. [ABSTRACT FROM AUTHOR] AB - Copyright of Computers & Fluids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TURBULENT boundary layer KW - COMPRESSIBLE flow (Fluid dynamics) KW - COMPUTER simulation KW - TEMPERATURE effect KW - REYNOLDS number KW - Compressible flow KW - Direct numerical simulation KW - Implicit large-eddy simulation KW - Resolution KW - Turbulent boundary layer N1 - Accession Number: 109180393; Poggie, Jonathan 1; Email Address: jpoggie@purdue.edu Bisek, Nicholas J. 1 Gosse, Ryan 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7512, United States; Source Info: Oct2015, Vol. 120, p0000; Subject Term: TURBULENT boundary layer; Subject Term: COMPRESSIBLE flow (Fluid dynamics); Subject Term: COMPUTER simulation; Subject Term: TEMPERATURE effect; Subject Term: REYNOLDS number; Author-Supplied Keyword: Compressible flow; Author-Supplied Keyword: Direct numerical simulation; Author-Supplied Keyword: Implicit large-eddy simulation; Author-Supplied Keyword: Resolution; Author-Supplied Keyword: Turbulent boundary layer; Number of Pages: 1p; Document Type: Article L3 - 10.1016/j.compfluid.2015.07.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109180393&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Clemens, Michael S. AU - Aden, James K. AU - Heafner, Thomas A. AU - Watson, J. Devin B. AU - Rasmussen, Todd E. AU - Glasgow, Sean C. T1 - Quality of Life (QOL) in United States Veterans with Combat-Related Ostomies from Iraq and Afghanistan. JO - Journal of the American College of Surgeons JF - Journal of the American College of Surgeons Y1 - 2015/10/02/Oct2015 Supplement 1 VL - 221 M3 - Article SP - S35 EP - S35 SN - 10727515 KW - VETERANS KW - OSTOMY KW - QUALITY of life KW - UNITED States KW - IRAQ KW - AFGHANISTAN N1 - Accession Number: 109500748; Clemens, Michael S. 1 Aden, James K. 1 Heafner, Thomas A. 1 Watson, J. Devin B. 1 Rasmussen, Todd E. 1 Glasgow, Sean C. 1; Affiliation: 1: San Antonio Military Medical Center, San Antonio, TX; United States Air Force Center for the Sustainment of Trauma, St. Louis, MO; United States Army Institute of Surgical Research, San Antonio, TX; Source Info: Oct2015 Supplement 1, Vol. 221, pS35; Subject Term: VETERANS; Subject Term: OSTOMY; Subject Term: QUALITY of life; Subject Term: UNITED States; Subject Term: IRAQ; Subject Term: AFGHANISTAN; NAICS/Industry Codes: 923140 Administration of Veterans' Affairs; Number of Pages: 1p; Document Type: Article L3 - 10.1016/j.jamcollsurg.2015.07.068 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109500748&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 109500748 T1 - Quality of Life (QOL) in United States Veterans with Combat-Related Ostomies from Iraq and Afghanistan. AU - Clemens, Michael S. AU - Aden, James K. AU - Heafner, Thomas A. AU - Watson, J. Devin B. AU - Rasmussen, Todd E. AU - Glasgow, Sean C. Y1 - 2015/10/02/Oct2015 Supplement 1 N1 - Accession Number: 109500748. Language: English. Entry Date: In Process. Revision Date: 20160629. Publication Type: Article. Supplement Title: Oct2015 Supplement 1. Journal Subset: Biomedical; USA. NLM UID: 9431305. SP - S35 EP - S35 JO - Journal of the American College of Surgeons JF - Journal of the American College of Surgeons JA - J AM COLL SURG VL - 221 CY - New York, New York PB - Elsevier Science SN - 1072-7515 AD - San Antonio Military Medical Center, San Antonio, TX; United States Air Force Center for the Sustainment of Trauma, St. Louis, MO; United States Army Institute of Surgical Research, San Antonio, TX DO - 10.1016/j.jamcollsurg.2015.07.068 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109500748&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 110211752 T1 - Review of the Fifth Annual Joint Theater Trauma System Trauma Conference. AU - Gross, Kirby R. AU - Rickard, Rory F. AU - Eastridge, Brian J. AU - Curtis, Ryan A. AU - Witte, Stephen M. AU - Shackelford, Stacy A. AU - Bailey, Jeffrey A. AU - Kuncir, Eric J. AU - Paix, Bruce AU - Riley, Keyan D. AU - Burrell, Elizabeth AU - Smith, Michael P. AU - Soliz, Bill A. AU - Remick, Kyle N. Y1 - 2015/10/02/Oct2015 Supplement N1 - Accession Number: 110211752. Language: English. Entry Date: 20160106. Revision Date: 20151009. Publication Type: Article. Supplement Title: Oct2015 Supplement. Journal Subset: Biomedical; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 101570622. SP - S70 EP - S74 JO - Journal of Trauma & Acute Care Surgery JF - Journal of Trauma & Acute Care Surgery JA - J TRAUMA ACUTE CARE SURG CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 2163-0755 AD - USCENTCOM Joint Theater Trauma System, JBSA-Fort Sam Houston AD - Academic Department of Military Surgery and Trauma, Royal Centre for Defence Medicine, ICT Centre, Birmingham, United Kingdom AD - University of Texas Health Science Center San Antonio, San Antonio, Texas AD - Department of Emergency Medicine, CRDAMC Fort Hood AD - 82nd Airborne Division, Fayetteville, North Carolina AD - USAF Center for Sustainment of Trauma and Readiness Skills, Baltimore AD - Kandahar Role 3 Multi-national Medical Unit, Australia AD - Craig Joint Theater Hospital, US Air Force Academy, El Paso County, Colorado AD - Hanscom Air Force Base, Bedford, Massachusetts AD - Task Force 31 US Medical Contingent, UK Role 3 Hospital DO - 10.1097/TA.0000000000000669 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=110211752&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 110211769 T1 - Early in-theater management of combat-related traumatic brain injury: A prospective, observational study to identify opportunities for performance improvement. AU - Fang, Raymond AU - Markandaya, Manjunath AU - Du Bose, Joseph J. AU - Cancio, Leopoldo C. AU - Shackelford, Stacy AU - Blackbourne, Lome H. AU - DuBose, Joseph J AU - Blackbourne, Lorne H Y1 - 2015/10/02/Oct2015 Supplement N1 - Accession Number: 110211769. Language: English. Entry Date: 20160106. Revision Date: 20160106. Publication Type: journal article. Supplement Title: Oct2015 Supplement. Journal Subset: Biomedical; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Instrumentation: Clinical Decision Making in Nursing Scale (CDMNS) (Jenkins); Center for Epidemiologic Studies Depression Scale (CES-D); Schedules for Clinical Assessment in Neuropsychiatry (SCAN); Glasgow Coma Scale (GCS). NLM UID: 101570622. KW - Military Personnel KW - Brain Injuries -- Therapy KW - Military Medicine -- Standards KW - Blast Injuries -- Therapy KW - Glasgow Coma Scale KW - Tomography, X-Ray Computed KW - Risk Factors KW - Blast Injuries -- Mortality KW - Female KW - Oxygen Therapy KW - Male KW - Brain Injuries -- Radiography KW - Quality Improvement KW - Blast Injuries -- Radiography KW - Prospective Studies KW - Brain Injuries -- Mortality KW - United States KW - Center for Epidemiological Studies Depression Scale KW - Scales SP - S181 EP - S187 JO - Journal of Trauma & Acute Care Surgery JF - Journal of Trauma & Acute Care Surgery JA - J TRAUMA ACUTE CARE SURG CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - Background: Combat-related moderate-to-severe traumatic brain injury (CRTBI) is a significant cause of wartime morbidity and mortality. As of August 2014, moderate-to-severe traumatic brain injuries sustained by members of the Department of Defense worldwide since 2000 totaled 32,996 cases. Previously published epidemiologic reviews describe CRTBI management at a "strategic" level, but they lack "tactical" patient-specific data required for performance improvement. In addition, scarce data exist regarding prehospital CRTBI care.Methods: This is a prospective observational study of consecutive CRTBI casualties presenting to US Role 3 medical facilities. Admission variables including demographics, initial clinical findings, and laboratory results were collected. Head computed tomographic scan findings were noted. Interventions in the first 72 postinjury hours were recorded. Early in-theater mortality was noted, but longer-term outcomes were not.Results: Casualties were predominately injured by explosive blasts (78.6%). Penetrating injuries occurred in 42.9%. On arrival, Glasgow Coma Scale (GCS) score was less than 8 for 47.7%. Hypothermia (temperature < 95.0°F) was present in 4.5%, and hypotension (systolic blood pressure < 90 mm Hg) in 21.1%. Hypoxia (O2 saturation < 90%) was observed in 52.5%. Both hypercarbia (Paco2 > 45 mm Hg, 50%) and hypocarbia (Paco2 < 36 mm Hg, 20.3%) were common on presentation. Head computed tomographic scan most commonly found skull fracture (68.9%), subdural hematoma (54.1%), and cerebral contusion (51.4%). Hypertonic saline was administered to 69.7% and factor VIIa to 11.1%. Early in-theater mortality at Role 3 was 19.4%.Conclusion: Avoidance of secondary brain injury by optimizing oxygenation, ventilation, and cerebral perfusion is the primary goal in the contemporary care of moderate-to-severe CRTBI. Ideally, this crucial care must begin as early as possible after injury. Given the frequency of hypotension, hypoxia, and both hypercarbia and hypocarbia upon Role 3 arrival, increased emphasis on prehospital management is indicated.Level Of Evidence: Therapeutic study, level IV; epidemiologic study, level III. SN - 2163-0755 AD - United States Air Force Center for Sustainment of Trauma and Readiness Skills, Baltimore, Maryland AD - R Adams Cowley Shock Trauma Center, University of Maryland Medical Center, Baltimore, Maryland AD - United States Army Institute for Surgical Research, Brooke Army Medical Center, Fort Sam Houston, San Antonio, Texas U2 - PMID: 26406428. DO - 10.1097/TA.0000000000000769 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=110211769&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - DelRaso, Nicholas J. AU - Chan, Victor T. AU - Mauzy, Camilla A. AU - Shiyanov, Pavel A. T1 - Air Force Research Laboratory Integrated Omics Research. JO - Military Medicine JF - Military Medicine Y1 - 2015/10/02/2015 Supplement VL - 180 M3 - journal article SP - 67 EP - 75 PB - AMSUS SN - 00264075 AB - Integrated Omics research capabilities within the Air Force Research Laboratory began in 2003 with the initiation of a Defense Technology Objective project aimed to identify biomarkers of toxicity occurring within the warfighter as a preclinical indicator. Current methods for determining toxic exposures are not responsive enough or created available for deployment to prevent serious health effects. Using Integrated Omics (Genomics/Epigenetics, Proteomics, and Metabonomics) for biomarker discovery, we have identified specific molecular markers which, once validated, could be used for real-time or near-real-time monitoring of the human response to uncharacterized exposures. The determination and use of validated biomarker sets, when installed on a fieldable biomonitor system, could allow fast determination of subclinical organ damage in response to chemical exposures. Since initiation of this program, our group has applied Omics technologies for biomarker discovery in a number of toxicology and human performance projects, including jet fuel exposures and cognitive fatigue. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYSTEMS biology KW - MEDICAL research KW - AIR forces KW - BIOCHEMICAL markers KW - AIRMEN KW - HEALTH KW - CLINICAL indications N1 - Accession Number: 110220239; DelRaso, Nicholas J. 1 Chan, Victor T. 1 Mauzy, Camilla A. 1 Shiyanov, Pavel A. 1; Affiliation: 1: Air Force Research Laboratory, 711 Human Performance Wing, Human Effectiveness Directorate, Bioeffects Division, Molecular Bioeffects Branch (RHDJ), Building 837, 2729 R Street, Wright-Patterson AFB, OH 45433-5707; Source Info: 2015 Supplement, Vol. 180, p67; Subject Term: SYSTEMS biology; Subject Term: MEDICAL research; Subject Term: AIR forces; Subject Term: BIOCHEMICAL markers; Subject Term: AIRMEN; Subject Term: HEALTH; Subject Term: CLINICAL indications; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 9p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: journal article L3 - 10.7205/MILMED-D-15-00051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110220239&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 110220239 T1 - Air Force Research Laboratory Integrated Omics Research. AU - DelRaso, Nicholas J. AU - Chan, Victor T. AU - Mauzy, Camilla A. AU - Shiyanov, Pavel A. Y1 - 2015/10/02/2015 Supplement N1 - Accession Number: 110220239. Language: English. Entry Date: 20161223. Revision Date: 20170104. Publication Type: journal article. Supplement Title: 2015 Supplement. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. Instrumentation: Frenchay Aphasia Screening Test (FAST). NLM UID: 2984771R. KW - Occupational Exposure KW - Military Personnel KW - Biochemistry KW - Genomics KW - Mental Fatigue -- Urine KW - Hydrocarbons KW - Hazardous Materials KW - Epigenomics KW - Proteomics KW - Aerospace Medicine KW - Research, Medical KW - Laboratories KW - Clinical Assessment Tools SP - 67 EP - 75 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 180 CY - Bethesda, Maryland PB - AMSUS AB - Integrated Omics research capabilities within the Air Force Research Laboratory began in 2003 with the initiation of a Defense Technology Objective project aimed to identify biomarkers of toxicity occurring within the warfighter as a preclinical indicator. Current methods for determining toxic exposures are not responsive enough or created available for deployment to prevent serious health effects. Using Integrated Omics (Genomics/Epigenetics, Proteomics, and Metabonomics) for biomarker discovery, we have identified specific molecular markers which, once validated, could be used for real-time or near-real-time monitoring of the human response to uncharacterized exposures. The determination and use of validated biomarker sets, when installed on a fieldable biomonitor system, could allow fast determination of subclinical organ damage in response to chemical exposures. Since initiation of this program, our group has applied Omics technologies for biomarker discovery in a number of toxicology and human performance projects, including jet fuel exposures and cognitive fatigue. SN - 0026-4075 AD - Air Force Research Laboratory, 711 Human Performance Wing, Human Effectiveness Directorate, Bioeffects Division, Molecular Bioeffects Branch (RHDJ), Building 837, 2729 R Street, Wright-Patterson AFB, OH 45433-5707 U2 - PMID: 26444894. DO - 10.7205/MILMED-D-15-00051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=110220239&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Miracle, Daniel B. T1 - Corrigendum to “The density and packing fraction of binary metallic glasses” [Acta Mater. 61 (2013) 3157–3171]. JO - Acta Materialia JF - Acta Materialia Y1 - 2015/10// VL - 98 M3 - Article SP - 433 EP - 436 SN - 13596454 KW - ERRATA (Publishing) KW - BINARY metallic systems KW - METALLIC glasses KW - PACKING fractions KW - MATERIALS science N1 - Accession Number: 109045606; Miracle, Daniel B. 1; Email Address: daniel.miracle@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, OH 45433, USA; Source Info: Oct2015, Vol. 98, p433; Subject Term: ERRATA (Publishing); Subject Term: BINARY metallic systems; Subject Term: METALLIC glasses; Subject Term: PACKING fractions; Subject Term: MATERIALS science; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.actamat.2015.07.065 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109045606&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Macdonald Jr., Paul A. T1 - Hell, the Problem of Evil, and the Perfection of the Universe. JO - American Catholic Philosophical Quarterly: Journal of the American Catholic Philosophical Association JF - American Catholic Philosophical Quarterly: Journal of the American Catholic Philosophical Association Y1 - 2015///Fall2015 VL - 89 IS - 4 M3 - Article SP - 603 EP - 628 SN - 10513558 AB - In this article, I address the question why God would create a world with damned human beings in it when (presumably) he could create a better world without damned human beings. Specifically, I explain and defend what I call the "perfection of the universe argument." According to this argument, which is Augustinian and Thomistic in origin, it is entirely and equally consistent with divine goodness for God to create a world with damned human beings in it or a damnation-free world so long as God ensures that each world is good as a whole. I then respond to two different objections to this argument. Finally, I show how the perfection of the universe argument leaves room for hoping that we live in a world in which no human being is damned and God affords every human being a life that is good as a whole. [ABSTRACT FROM AUTHOR] AB - Copyright of American Catholic Philosophical Quarterly: Journal of the American Catholic Philosophical Association is the property of Philosophy Documentation Center and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GOOD & evil KW - HUMAN beings KW - PERFECTION -- Religious aspects N1 - Accession Number: 110923773; Macdonald Jr., Paul A. 1; Affiliation: 1: United States Air Force Academy USAFA, Colorado; Source Info: Fall2015, Vol. 89 Issue 4, p603; Subject Term: GOOD & evil; Subject Term: HUMAN beings; Subject Term: PERFECTION -- Religious aspects; Number of Pages: 26p; Document Type: Article L3 - 10.5840/acpq20159465 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110923773&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Spera, Christopher AU - Matto, Holly C. AU - Travis, Wendy T1 - Research Note. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 2015/10// VL - 41 IS - 4 M3 - Article SP - 734 EP - 741 SN - 0095327X AB - This study examined whether satisfaction with the Air Force (AF) as way of life increased post-9/11 and whether it has sustained. Using data from 179,309 personnel collected across a period of eight years (2000–2008) in four waves of cross-sectional data collection, we found that satisfaction with the AF as a way of life increased dramatically following 9/11 and since then has declined from the height, but has not returned to pre-9/11 levels. After controlling for time as well as demographics, the best predictors of satisfaction were (1) feeling that the AF is a good environment for bringing up children, (2) a strong a sense of community, and (3) perceived strong unit leader support for members and their families. [ABSTRACT FROM AUTHOR] AB - Copyright of Armed Forces & Society (0095327X) is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEPTEMBER 11 Terrorist Attacks, 2001 KW - MILITARY personnel -- United States KW - PATRIOTISM KW - FAMILIES of military personnel KW - DEMOGRAPHIC surveys KW - retention KW - satisfaction KW - UNITED States. Air Force N1 - Accession Number: 109397689; Spera, Christopher 1 Matto, Holly C. 2 Travis, Wendy 3; Affiliation: 1: George Mason University, Fairfax, VA, USA 2: Abt Associates, Bethesda, MD, USA 3: United States Air Force, San Antonio, TX, USA; Source Info: Oct2015, Vol. 41 Issue 4, p734; Subject Term: SEPTEMBER 11 Terrorist Attacks, 2001; Subject Term: MILITARY personnel -- United States; Subject Term: PATRIOTISM; Subject Term: FAMILIES of military personnel; Subject Term: DEMOGRAPHIC surveys; Author-Supplied Keyword: retention; Author-Supplied Keyword: satisfaction; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 8p; Document Type: Article; Full Text Word Count: 2473 L3 - 10.1177/0095327X14550857 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109397689&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - AU - Drew Jr., W. E.1 T1 - Smartphones as locative media. JO - Choice: Current Reviews for Academic Libraries JF - Choice: Current Reviews for Academic Libraries J1 - Choice: Current Reviews for Academic Libraries PY - 2015/10// Y1 - 2015/10// VL - 53 IS - 2 CP - 2 M3 - Book Review SP - 279 EP - 280 SN - 00094978 KW - Nonfiction KW - Smartphones -- Social aspects KW - Frith, Jordan KW - Smartphones As Locative Media (Book) N1 - Accession Number: 110050703; Authors: Drew Jr., W. E. 1; Affiliations: 1: Air Force Research Laboratory; Subject: Smartphones As Locative Media (Book); Subject: Frith, Jordan; Subject: Smartphones -- Social aspects; Subject: Nonfiction; Number of Pages: 2p; Record Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=110050703&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - Kapaku, Robert K. AU - Rankin, Brent A. AU - Gore, Jay P. T1 - Quantitative imaging of radiation from soot and carbon dioxide in a turbulent ethylene jet diffusion flame. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2015/10// VL - 162 IS - 10 M3 - Article SP - 3704 EP - 3710 SN - 00102180 AB - Quantitative imaging of mid-infrared radiation provides a unique capability to investigate temporally and spatially resolved radiation from gas species and particulates in turbulent flames. The current study reports and analyzes quantitative images of radiation intensity from a turbulent ethylene jet diffusion flame that matches the Reynolds number (15,200) of a non-sooting flame (DLR-A) from the International Workshop on Measurement and Computation of Turbulent Non-premixed Flames. A calibrated high-speed mid-infrared camera with two band-pass filters was used to acquire images of radiation intensity in wavelengths corresponding to soot and carbon dioxide. The measurements, in the wavelength band corresponding to radiation emissions from soot, show thin radiating structures corresponding to soot layers. The normalized probability density functions (PDFs) of soot radiation are skewed by intermittent high intensities while the PDFs of carbon dioxide radiation are more symmetric about the mean. The temporal and spatial integral scales of radiation from soot are up to 30% shorter than the corresponding scales of radiation from carbon dioxide for image centerline locations downstream of initial soot radiation detection. The images and analyses in this work will be compared with results of large eddy simulations rendered in the form of quantitative images of the mid-infrared radiation intensity. Such comparisons support the evaluation of models used in turbulent combustion and radiation simulations. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMAGING systems in chemistry KW - QUANTITATIVE chemical analysis KW - TURBULENT flow KW - CARBON dioxide -- Analysis KW - SOOT -- Analysis KW - Flame radiation KW - Infrared imaging KW - Soot radiation KW - Sooting flame KW - Turbulent nonpremixed flame N1 - Accession Number: 109494638; Kapaku, Robert K. 1 Rankin, Brent A. 2; Email Address: brent.rankin.1@us.af.mil Gore, Jay P. 1; Affiliation: 1: School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA 2: Air Force Research Laboratory, Wright–Patterson AFB, OH 45433, USA; Source Info: Oct2015, Vol. 162 Issue 10, p3704; Subject Term: IMAGING systems in chemistry; Subject Term: QUANTITATIVE chemical analysis; Subject Term: TURBULENT flow; Subject Term: CARBON dioxide -- Analysis; Subject Term: SOOT -- Analysis; Author-Supplied Keyword: Flame radiation; Author-Supplied Keyword: Infrared imaging; Author-Supplied Keyword: Soot radiation; Author-Supplied Keyword: Sooting flame; Author-Supplied Keyword: Turbulent nonpremixed flame; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.combustflame.2015.07.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109494638&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gao, Xiang AU - Zhang, Yao AU - Adusumilli, Sampath AU - Seitzman, Jerry AU - Sun, Wenting AU - Ombrello, Timothy AU - Carter, Campbell T1 - The effect of ozone addition on laminar flame speed. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2015/10// VL - 162 IS - 10 M3 - Article SP - 3914 EP - 3924 SN - 00102180 AB - The effect of ozone (O 3 ) addition on laminar flame speeds ( S L ) across a wide pressure range was investigated experimentally and numerically using three fuels, CH 4 , C 2 H 4 and C 3 H 8 . Enhancement of S L due to O 3 addition was consistently observed for CH 4 and C 3 H 8 mixtures over a range of lean to rich equivalence ratios, based on comparisons of S L measured with and without O 3 addition. For both fuels, simulation results agree with experimental results, with the best predictions at near stoichiometric conditions and the largest discrepancies for fuel-rich cases. A significant increase in the S L enhancement was observed at elevated pressures: the enhancement in the measured S L for a stoichiometric CH 4 /air mixture with 6334 parts per million (ppm) O 3 addition increased from 7.7% at atmospheric pressure to 11% at 2.5 atm. Elevated pressure both promotes O 3 decomposition, which provides O atoms, and suppresses diffusion of H, which reduces the influence of the O 3 +H=OH+O 2 reaction. Together, these lead to the increased S L enhancement with pressure. In contrast to the results for the two saturated hydrocarbons, both detrimental and beneficial effects due to O 3 addition were observed for the unsaturated hydrocarbon fuel, C 2 H 4 in this study. With O 3 addition, C 2 H 4 /air S L decreased at room temperature and pressure, owing to the heat loss induced by the exothermic ozonolysis reaction between O 3 and C 2 H 4 in the mixing process, but increased as the ozonolysis reactions were minimized when reactants were cooled to 200 K or pressure was decreased below 0.66 atm. These experimental results were successfully explained by a numerical model that includes a new ozonolysis sub-mechanism. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OZONE KW - LAMINAR flow KW - NUMERICAL analysis KW - FLAME KW - GAS mixtures KW - OZONOLYSIS KW - CHEMICAL reactions KW - Flame propagation KW - Laminar flame speed KW - Ozone KW - Ozonolysis reactions KW - Pressure effect N1 - Accession Number: 109494610; Gao, Xiang 1 Zhang, Yao 1 Adusumilli, Sampath 1 Seitzman, Jerry 1 Sun, Wenting 1; Email Address: wenting.sun@aerospace.gatech.edu Ombrello, Timothy 2 Carter, Campbell 2; Affiliation: 1: School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA 2: U.S. Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Oct2015, Vol. 162 Issue 10, p3914; Subject Term: OZONE; Subject Term: LAMINAR flow; Subject Term: NUMERICAL analysis; Subject Term: FLAME; Subject Term: GAS mixtures; Subject Term: OZONOLYSIS; Subject Term: CHEMICAL reactions; Author-Supplied Keyword: Flame propagation; Author-Supplied Keyword: Laminar flame speed; Author-Supplied Keyword: Ozone; Author-Supplied Keyword: Ozonolysis reactions; Author-Supplied Keyword: Pressure effect; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.combustflame.2015.07.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109494610&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Geiger II, T. J. AU - Pugh, Melody T1 - Christian Rhetorics: Toward a Hopeful Future. JO - Composition Studies JF - Composition Studies Y1 - 2015///Fall2015 VL - 43 IS - 2 M3 - Book Review SP - 216 EP - 224 PB - Composition Studies SN - 15425894 KW - NONFICTION KW - DEPALMA, Michael-John KW - RINGER, Jeffrey M. KW - LEI, Elizabeth Vander KW - AMOROSE, Thomas KW - DANIELL, Beth KW - GERE, Anne Ruggles KW - MAPPING Christian Rhetorics: Connecting Conversations, Charting New Territories (Book) KW - RENOVATING Rhetoric in Christian Tradition (Book) N1 - Accession Number: 110619833; Geiger II, T. J. 1 Pugh, Melody 2; Affiliation: 1: Lamar Universit 2: United States Air Force Academy; Source Info: Fall2015, Vol. 43 Issue 2, p216; Subject Term: NONFICTION; Reviews & Products: MAPPING Christian Rhetorics: Connecting Conversations, Charting New Territories (Book); Reviews & Products: RENOVATING Rhetoric in Christian Tradition (Book); People: DEPALMA, Michael-John; People: RINGER, Jeffrey M.; People: LEI, Elizabeth Vander; People: AMOROSE, Thomas; People: DANIELL, Beth; People: GERE, Anne Ruggles; Number of Pages: 9p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110619833&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Prater, Ashley AU - Shen, Lixin AU - Suter, Bruce W. T1 - Finding Dantzig selectors with a proximity operator based fixed-point algorithm. JO - Computational Statistics & Data Analysis JF - Computational Statistics & Data Analysis Y1 - 2015/10// VL - 90 M3 - Article SP - 36 EP - 46 SN - 01679473 AB - A simple iterative method for finding the Dantzig selector, designed for linear regression problems, is introduced. The method consists of two stages. The first stage approximates the Dantzig selector through a fixed-point formulation of solutions to the Dantzig selector problem; the second stage constructs a new estimator by regressing data onto the support of the approximated Dantzig selector. The proposed method is compared to an alternating direction method. The results of numerical simulations using both the proposed method and the alternating direction method on synthetic and real-world data sets are presented. The numerical simulations demonstrate that the two methods produce results of similar quality; however the proposed method tends to be significantly faster. [ABSTRACT FROM AUTHOR] AB - Copyright of Computational Statistics & Data Analysis is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPERATOR theory KW - FIXED point theory KW - COMPUTER algorithms KW - ITERATIVE methods (Mathematics) KW - REGRESSION analysis KW - Alternating direction method KW - Dantzig selector KW - Fixed-point algorithm KW - Proximity operator N1 - Accession Number: 103199741; Prater, Ashley 1; Email Address: ashley.prater.3@us.af.mil Shen, Lixin 2; Email Address: lshen03@syr.edu Suter, Bruce W. 1; Email Address: bruce.suter@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Information Directorate, Rome, NY 13441, USA 2: Department of Mathematics, Syracuse University, Syracuse, NY 13244, USA; Source Info: Oct2015, Vol. 90, p36; Subject Term: OPERATOR theory; Subject Term: FIXED point theory; Subject Term: COMPUTER algorithms; Subject Term: ITERATIVE methods (Mathematics); Subject Term: REGRESSION analysis; Author-Supplied Keyword: Alternating direction method; Author-Supplied Keyword: Dantzig selector; Author-Supplied Keyword: Fixed-point algorithm; Author-Supplied Keyword: Proximity operator; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.csda.2015.04.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103199741&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ghaderi, Pooya AU - Dick, Andrew J. AU - Foley, Jason R. AU - Falbo, Gregory T1 - Practical high-fidelity frequency-domain force and location identification. JO - Computers & Structures JF - Computers & Structures Y1 - 2015/10// VL - 158 M3 - Article SP - 30 EP - 41 SN - 00457949 AB - Identifying the force information and location of an impact event is important for predicting and/or monitoring potential damage to the structures. Directly measuring the impact event and/or locating the impact force is not always possible due to the nature of the impact or the structure. In this work, a new force and location identification method is introduced which utilizes a spectral finite element method (SFEM) model of the structure. The identification technique is demonstrated and studied through its application to beam structures in order to identify impulsive loads. Wave propagation data collected with accelerometers placed on the structure are used in order to determine the impact information. When the impact force is applied between the accelerometers, the calculated force is distributed over the two accelerometer positions on either side of the impact location. The location identification process uses the distribution of the identified force information in order to locate the impact position. This method is performed by matching simulated data to the identified force data by tuning the impact location within the numerical model. When a sufficient level of agreement is achieved, the impact location is determined. In order to validate the results of the numerical studies, identified impact forces and locations are calculated for experimental data and good agreement is observed with the measured force information and impact locations. [ABSTRACT FROM AUTHOR] AB - Copyright of Computers & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FINITE element method KW - STRUCTURAL engineering KW - SIMULATION methods & models KW - ACCELEROMETERS KW - THEORY of wave motion KW - Force identification KW - Force localization KW - Impact response KW - Spectral finite element method N1 - Accession Number: 108809385; Ghaderi, Pooya 1 Dick, Andrew J. 1; Email Address: andrew.j.dick@rice.edu Foley, Jason R. 2 Falbo, Gregory 3; Affiliation: 1: Rice University, Department of Mechanical Engineering, Houston, TX, USA 2: Fuzes Branch, Munitions Directorate, Air Force Research Laboratory, Eglin Air Force Base, FL, USA 3: LMS International, A Siemens Business, Troy, MI, USA; Source Info: Oct2015, Vol. 158, p30; Subject Term: FINITE element method; Subject Term: STRUCTURAL engineering; Subject Term: SIMULATION methods & models; Subject Term: ACCELEROMETERS; Subject Term: THEORY of wave motion; Author-Supplied Keyword: Force identification; Author-Supplied Keyword: Force localization; Author-Supplied Keyword: Impact response; Author-Supplied Keyword: Spectral finite element method; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.compstruc.2015.05.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108809385&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Briczinski, S. AU - Bernhardt, P. AU - Siefring, C. AU - Han, S.-M. AU - Pedersen, T. AU - Scales, W. T1 - 'Twisted Beam' SEE Observations of Ionospheric Heating from HAARP. JO - Earth, Moon & Planets JF - Earth, Moon & Planets Y1 - 2015/10// VL - 116 IS - 1 M3 - Article SP - 55 EP - 66 SN - 01679295 AB - Nonlinear interactions of high power HF radio waves in the ionosphere provide aeronomers with a unique space-based laboratory capability. The High-Frequency Active Auroral Research Program (HAARP) in Gakona, Alaska is the world's largest heating facility, yielding effective radiated powers in the gigawatt range. New results are present from HAARP experiments using a 'twisted beam' excitation mode. Analysis of twisted beam heating shows that the SEE results obtained are identical to more traditional patterns. One difference in the twisted beam mode is the heating region produced is in the shape of a ring as opposed to the more traditional 'solid spot' region from a pencil beam. The ring heating pattern may be more conducive to the creation of stable artificial airglow layers because of the horizontal structure of the ring. The results of these runs include artificial layer creation and evolution as pertaining to the twisted beam pattern. The SEE measurements aid the interpretation of the twisted beam interactions in the ionosphere. [ABSTRACT FROM AUTHOR] AB - Copyright of Earth, Moon & Planets is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSPHERIC plasma KW - HEATING KW - RADIO waves KW - ELECTRON beams KW - AIRGLOW KW - Ionospheric modification KW - Orbital angular momentum KW - Twisted beam N1 - Accession Number: 109968587; Briczinski, S. 1 Bernhardt, P. 1; Email Address: bern@ppd.nrl.navy.mil Siefring, C. 1 Han, S.-M. 1 Pedersen, T. 2 Scales, W. 3; Affiliation: 1: Naval Research Laboratory, Plasma Physics Division, Washington 20375 USA 2: Air Force Research Laboratory, Kirtland AFB 86117 USA 3: Department of Electrical Engineering, Virginia Tech, Blacksburg 24061 USA; Source Info: Oct2015, Vol. 116 Issue 1, p55; Subject Term: IONOSPHERIC plasma; Subject Term: HEATING; Subject Term: RADIO waves; Subject Term: ELECTRON beams; Subject Term: AIRGLOW; Author-Supplied Keyword: Ionospheric modification; Author-Supplied Keyword: Orbital angular momentum; Author-Supplied Keyword: Twisted beam; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; Number of Pages: 12p; Document Type: Article L3 - 10.1007/s11038-015-9460-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109968587&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Perry, Lori Davis T1 - Elizabeth Rowe and the Development of the English Novel. JO - Eighteenth Century Fiction JF - Eighteenth Century Fiction Y1 - 2015///Fall2015 VL - 28 IS - 1 M3 - Book Review SP - 192 EP - 194 PB - UTP/Eighteenth Century Fiction SN - 08406286 KW - ENGLISH fiction KW - NONFICTION KW - BACKSCHEIDER, Paula R. KW - ELIZABETH Rowe & the Development of the English Novel (Book) N1 - Accession Number: 110493092; Perry, Lori Davis 1; Affiliation: 1: United States Air Force Academy; Source Info: Fall2015, Vol. 28 Issue 1, p192; Subject Term: ENGLISH fiction; Subject Term: NONFICTION; Reviews & Products: ELIZABETH Rowe & the Development of the English Novel (Book); People: BACKSCHEIDER, Paula R.; Number of Pages: 3p; Document Type: Book Review L3 - 10.3138/ecf.28.1.173 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110493092&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Suthersan, Suthan AU - Carroll, Paul AU - Schnobrich, Matthew AU - Horst, John AU - Potter, Scott AU - Peters, Lynden T1 - Cleaning Up a 3-Mile-Long Groundwater Plume: It Can Be Done. JO - Ground Water Monitoring & Remediation JF - Ground Water Monitoring & Remediation Y1 - 2015/10// VL - 35 IS - 4 M3 - Article SP - 27 EP - 35 PB - Wiley-Blackwell SN - 10693629 AB - The article discusses the site conditions and restoration process that caused into cleaning-up of the Reese Air Force Base (AFB) trichloroethene (TCE) plume in groundwater. Particular focus was given on the key steps of the adaptive approach which include conceptual site model (CSM) refinement, optimization, and implementation of the remedy. Other topics include dynamic groundwater recirculation, engineered reductive dechlorination, and organizational objectives. KW - Trichloroethylene KW - Groundwater recharge KW - Site preparation KW - Plumes (Fluid dynamics) KW - Dechlorination (Chemistry) KW - Organizational goals KW - Reese (Mich.) KW - United States. Air Force N1 - Accession Number: 112361024; Suthersan, Suthan 1; Email Address: suthan.suthersan@arcadis-us.com; Carroll, Paul 2; Email Address: paul.carroll.1@us.af.mil; Schnobrich, Matthew 3; Email Address: matthew.schnobrich@arcadis-us.com; Horst, John 4; Email Address: john.horst@arcadis-us.com; Potter, Scott 5; Email Address: scott.potter@arcadis-us.com; Peters, Lynden 6; Email Address: lynden.peters@arcadis-us.com; Affiliations: 1: Executive Vice President and Chief Technical Officer of ARCADIS N.A., 10 Friends Lane, Suite 200, Newtown, PA 18940; 2: Program Manager for BRAC Execution at the Air Force Civil Engineer Center; 3: Principal Engineer at ARCADIS U.S. and the Director of Remediation for the company; 4: Executive Vice President of Technical Services at ARCADIS N.A., 10 Friends Lane, Suite 200, Newtown, PA 18940; 5: Vice President and Chief Hydrogeologist at ARCADIS U.S., Inc., 10 Friends Lane, Suite 200, Newtown, PA 18940; 6: ARCADIS project manager on this project; Issue Info: 2015, Vol. 35 Issue 4, p27; Thesaurus Term: Trichloroethylene; Thesaurus Term: Groundwater recharge; Subject Term: Site preparation; Subject Term: Plumes (Fluid dynamics); Subject Term: Dechlorination (Chemistry); Subject Term: Organizational goals; Subject: Reese (Mich.) ; Company/Entity: United States. Air Force; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 928110 National Security; NAICS/Industry Codes: 238910 Site Preparation Contractors; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=112361024&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Sacko, David H. T1 - Theory of Unipolar Politics. JO - H-Net Reviews in the Humanities & Social Sciences JF - H-Net Reviews in the Humanities & Social Sciences Y1 - 2015/10// M3 - Book Review SP - 1 EP - 2 SN - 15380661 KW - INTERNATIONAL relations KW - WORLD politics KW - NONFICTION KW - MONTEIRO, Nuno P. KW - THEORY of Unipolar Politics (Book) N1 - Accession Number: 110844464; Sacko, David H. 1; Affiliation: 1: United States Air Force Academy; Source Info: Oct2015, p1; Subject Term: INTERNATIONAL relations; Subject Term: WORLD politics; Subject Term: NONFICTION; Reviews & Products: THEORY of Unipolar Politics (Book); NAICS/Industry Codes: 911410 Foreign affairs; NAICS/Industry Codes: 928120 International Affairs; People: MONTEIRO, Nuno P.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110844464&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liu, Jun AU - Cui, Guolong AU - Li, Hongbin AU - Himed, Braham T1 - On the performance of a persymmetric adaptive matched filter. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2015/10// VL - 51 IS - 4 M3 - Article SP - 2605 EP - 2614 SN - 00189251 AB - We examine the adaptive detection problem in the presence of colored noise with an unknown covariance matrix, by exploiting a persymmetric structure in the received signal. The persymmetric adaptive matched filter (PS-AMF) is used to address this problem, which can significantly alleviate the requirement of secondary data. In G. Pailloux et al. “Persymmetric adaptive radar detectors,” (2011) the probability of false alarm of the PS-AMF has been obtained in terms of the Gaussian hypergeometric function. In this paper, finite-sum expressions for the probability of false alarm of the PS-AMF are derived, which are more convenient to use in calculating the detection threshold. Moreover, the detection probabilities of the PS-AMF for both nonfluctuating and fluctuating target models are derived. In the fluctuating model, the amplitude of the target echoes is described by a generalized Chi distribution that involves the Rayleigh distribution as a special case. These theoretical results are all confirmed using Monte Carlo (MC) simulations. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATCHED filters KW - COVARIANCE matrices KW - NOISE KW - ADAPTIVE radar KW - GAUSSIAN function KW - HYPERGEOMETRIC functions KW - RAYLEIGH model KW - MONTE Carlo method KW - Colored noise KW - Covariance matrices KW - Detectors KW - Probability KW - Radar detection KW - Symmetric matrices KW - Training data N1 - Accession Number: 112245949; Liu, Jun 1 Cui, Guolong 2 Li, Hongbin 3 Himed, Braham 4; Affiliation: 1: National Laboratory of Radar Signal Processing, Xidian University, Xi'an, 710071, China 2: School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, China 3: Stevens Institute of Technology, Department of Electrical and Computer, Engineering, Castle Point on Hudson, Hoboken, NJ 07030, USA 4: Air Force Research Laboratory, Sensors Directorate, 2241 Avionics Circle, WPAFB, OH 45433, USA; Source Info: Oct2015, Vol. 51 Issue 4, p2605; Subject Term: MATCHED filters; Subject Term: COVARIANCE matrices; Subject Term: NOISE; Subject Term: ADAPTIVE radar; Subject Term: GAUSSIAN function; Subject Term: HYPERGEOMETRIC functions; Subject Term: RAYLEIGH model; Subject Term: MONTE Carlo method; Author-Supplied Keyword: Colored noise; Author-Supplied Keyword: Covariance matrices; Author-Supplied Keyword: Detectors; Author-Supplied Keyword: Probability; Author-Supplied Keyword: Radar detection; Author-Supplied Keyword: Symmetric matrices; Author-Supplied Keyword: Training data; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TAES.2015.140633 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112245949&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sherrill, Ryan E. AU - Sinclair, Andrew J. AU - Sinha, S. C. AU - Lovell, T. Alan T1 - Lyapunov-Floquet control of satellite relative motion in elliptic orbits. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2015/10// VL - 51 IS - 4 M3 - Article SP - 2800 EP - 2810 SN - 00189251 AB - This paper proposes a method for continuous-thrust control of satellite formations in elliptic orbits. A previously calculated Lyapunov-Floquet transformation relates the linearized equations of relative motion for elliptic chief orbits to the Hill-Clohessy-Wiltshire equations describing circular chiefs. Using a control law based on Lyapunov-Floquet theory, a time-varying feedback gain is computed that drives a deputy satellite toward rendezvous with an elliptic chief. This control law stabilizes the relative motion across a wide range of chief eccentricities. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORBITS KW - FLOQUET theory KW - LYAPUNOV functions KW - LINEAR equations KW - RELATIVE motion KW - FEEDBACK control systems KW - Elliptic orbits KW - Mathematical model KW - Optimal control KW - Orbits KW - Satellites KW - Space vehicles KW - Thrust control KW - Time-varying systems N1 - Accession Number: 112245963; Sherrill, Ryan E. 1 Sinclair, Andrew J. 2 Sinha, S. C. 3 Lovell, T. Alan 4; Affiliation: 1: Engility Corporation, 51 3rd St., Bldg 9, Shalimar, FL 32579, USA 2: Aerospace Engineering, Auburn University, 211 Davis Hall, AL 36849, USA 3: Mechanical Engineering, Auburn University, 1418 Wiggins Hall, AL 36849, USA 4: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland Air Force Base, NM 87117 USA; Source Info: Oct2015, Vol. 51 Issue 4, p2800; Subject Term: ORBITS; Subject Term: FLOQUET theory; Subject Term: LYAPUNOV functions; Subject Term: LINEAR equations; Subject Term: RELATIVE motion; Subject Term: FEEDBACK control systems; Author-Supplied Keyword: Elliptic orbits; Author-Supplied Keyword: Mathematical model; Author-Supplied Keyword: Optimal control; Author-Supplied Keyword: Orbits; Author-Supplied Keyword: Satellites; Author-Supplied Keyword: Space vehicles; Author-Supplied Keyword: Thrust control; Author-Supplied Keyword: Time-varying systems; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TAES.2015.140281 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112245963&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Metcalf, Justin G. AU - Sahin, Cenk AU - Blunt, Shannon D. AU - Rangaswamy, Muralidhar T1 - Analysis of symbol-design strategies for intrapulse radar-embedded communications. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2015/10// VL - 51 IS - 4 M3 - Article SP - 2914 EP - 2931 SN - 00189251 AB - The design of communication symbols that may be embedded on an intrapulse basis into the backscatter generated by a high-power, pulsed radar is considered. This framework requires the asynchronous detection of transmitted symbols in a high-interference environment that degrades the capabilities of conventional intercept receivers. The impact of symbol design and filter structure upon the successful detection of covert symbols by the intended receiver and a hypothetical partially clairvoyant intercept receiver is examined. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR KW - BACKSCATTERING KW - ACOUSTIC receivers KW - CLAIRVOYANCE KW - CLAIRVOYANTS KW - Bandwidth KW - Clutter KW - Communication symbols KW - Embedded systems KW - Lighting KW - Radar clutter KW - Receivers N1 - Accession Number: 112245972; Metcalf, Justin G. 1 Sahin, Cenk 2 Blunt, Shannon D. 2 Rangaswamy, Muralidhar 1; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, 2241 Avionics Circle, Wright-Patterson Air Force Base, OH 45433, USA 2: University of Kansas, Electrical Engineering and Computer Science, 1520 W. 15th St., Eaton Hall, Lawrence, 66045, USA; Source Info: Oct2015, Vol. 51 Issue 4, p2914; Subject Term: RADAR; Subject Term: BACKSCATTERING; Subject Term: ACOUSTIC receivers; Subject Term: CLAIRVOYANCE; Subject Term: CLAIRVOYANTS; Author-Supplied Keyword: Bandwidth; Author-Supplied Keyword: Clutter; Author-Supplied Keyword: Communication symbols; Author-Supplied Keyword: Embedded systems; Author-Supplied Keyword: Lighting; Author-Supplied Keyword: Radar clutter; Author-Supplied Keyword: Receivers; Number of Pages: 18p; Document Type: Article L3 - 10.1109/TAES.2015.140675 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=112245972&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ghosh Roy, Dilip AU - Mudaliar, Saba T1 - Domain Derivatives in Dielectric Rough Surface Scattering. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2015/10// VL - 63 IS - 10 M3 - Article SP - 4486 EP - 4495 SN - 0018926X AB - The inverse scattering solution of shape and/or material parameter reconstruction is often posed as a problem in nonlinear minimization of an objective function with respect to $N$ (usually large) number of unknown model parameters characterizing the scatterer. The minimization procedures are usually iterative, and require the gradient of the objective function in the unknown model parameter vector in each stage of iteration. For large $N$, finite differencing becomes numerically intensive, and an efficient alternative is domain differentiation in which the full gradient is obtained by solving a single scattering problem of an auxiliary field using the same scattering operator as that of the forward solution. A well-known technique in this direction is the so-called adjoint field method, which obtains the gradient by variationally minimizing an augmented objective function that includes the reduced wave equation via a Lagrange multiplier. Results are reported mostly for compact objects. This paper presents the domain derivative calculation of the gradient for an one-dimensional, locally perturbed, and infinitely long dielectric interface. The method is nonvariational and algebraic in nature in that it evaluates the gradient by directly domain differentiating the scattering equations. The computations are straightforward and easy to follow. The mathematical transformation of the scattering problem into the corresponding problem for the differentiated fields can be visualized explicitly. The formulation of and the motivation behind introducing the auxiliary field are explicitly demonstrated. Closed-form analytic expressions are obtained for the gradients for electromagnetic TE/TM scattering from dielectric rough surfaces and for scalar wave scattering from Neumann and Dirichlet rough surfaces. Results are compared with those of compact scatterers. Finally, the relationship between our results and Lorentz reciprocity is pointed out and clarified. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRIC devices KW - LAGRANGE multiplier KW - DIELECTRIC waveguides KW - DIELECTRIC polarization KW - ELECTROMAGNETIC wave scattering KW - Antennas KW - Boundary conditions KW - dielectric rough surface KW - domain differentiation KW - Electromagnetic scattering KW - Eulerian derivative KW - locally perturbed KW - Rough surfaces KW - Scattering KW - Surface roughness KW - Surface waves N1 - Accession Number: 110172035; Ghosh Roy, Dilip 1 Mudaliar, Saba 2; Affiliation: 1: , Riverside Research Institute, Beavercreek, OH, USA 2: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, USA; Source Info: Oct2015, Vol. 63 Issue 10, p4486; Subject Term: DIELECTRIC devices; Subject Term: LAGRANGE multiplier; Subject Term: DIELECTRIC waveguides; Subject Term: DIELECTRIC polarization; Subject Term: ELECTROMAGNETIC wave scattering; Author-Supplied Keyword: Antennas; Author-Supplied Keyword: Boundary conditions; Author-Supplied Keyword: dielectric rough surface; Author-Supplied Keyword: domain differentiation; Author-Supplied Keyword: Electromagnetic scattering; Author-Supplied Keyword: Eulerian derivative; Author-Supplied Keyword: locally perturbed; Author-Supplied Keyword: Rough surfaces; Author-Supplied Keyword: Scattering; Author-Supplied Keyword: Surface roughness; Author-Supplied Keyword: Surface waves; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TAP.2015.2463682 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110172035&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gao, Xu AU - Sui, Chunchun AU - Hemmady, Sameer AU - Rivera, Joey AU - Yakura, Susumu Joe AU - Pommerenke, David AU - Patnaik, Abhishek AU - Beetner, Daryl G. T1 - Modeling Static Delay Variations in Push–Pull CMOS Digital Logic Circuits Due to Electrical Disturbances in the Power Supply. JO - IEEE Transactions on Electromagnetic Compatibility JF - IEEE Transactions on Electromagnetic Compatibility Y1 - 2015/10// VL - 57 IS - 5 M3 - Article SP - 1179 EP - 1187 SN - 00189375 AB - Soft errors can occur in digital integrated circuits (ICs) as a result of an electromagnetic disturbance, such as might result from an electrical fast transient (EFT). Many soft errors come from changes in propagation delays through digital logic, which are caused by changes in the on-die power supply voltage. An analytical model was developed to predict timing variations in digital logic as a result of variations in the power supply voltage. The derivation of the analytical delay model is reported. The model was validated experimentally by applying EFTs to a ring oscillator built in a test IC. The predicted and measured ring oscillator frequencies (or periods) agreed within a relative error of less than 2.0%. To further validate the approach, the model was applied to test the response of more complex circuits consisting of NAND/NOR logic gates, binary adders, dynamic logic gates, and transmission gates. The circuits were fabricated on a 0.5 μm test IC and simulated on two additional process technologies (0.18 μm and 45 nm). The model performed well in each case with a maximum relative error of 5.6%, verifying the applicability of the model for analyzing complex logic circuits within a variety of process technologies. The proposed delay model can be used by IC design engineers to predict and understand the change in the propagation delay through logic circuits due to the disturbed power supply. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electromagnetic Compatibility is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPLEMENTARY metal oxide semiconductors KW - LOGIC circuits KW - ELECTRIC power KW - INTEGRATED circuits KW - SOFT error (Electronics) KW - ELECTRIC potential KW - TIME delay estimation KW - CMOS integrated circuits (ICs) KW - delay estimation KW - Delays KW - electromagnetic interference KW - electromagnetic transients KW - immunity KW - Integrated circuit modeling KW - Inverters KW - Logic circuits KW - modeling KW - Power supplies KW - Propagation delay N1 - Accession Number: 110356194; Gao, Xu 1 Sui, Chunchun 1 Hemmady, Sameer 2 Rivera, Joey 3 Yakura, Susumu Joe 4 Pommerenke, David 1 Patnaik, Abhishek 1 Beetner, Daryl G. 1; Affiliation: 1: EMC Laboratory, Missouri University of Science and Technology, Rolla, MO, USA 2: TechFlow Scientific, Albuquerque, NM, USA 3: , TechFlow Scientific, Albuquerque, NM, USA 4: , Air Force Research Laboratory, Albuquerque, NM, USA; Source Info: Oct2015, Vol. 57 Issue 5, p1179; Subject Term: COMPLEMENTARY metal oxide semiconductors; Subject Term: LOGIC circuits; Subject Term: ELECTRIC power; Subject Term: INTEGRATED circuits; Subject Term: SOFT error (Electronics); Subject Term: ELECTRIC potential; Subject Term: TIME delay estimation; Author-Supplied Keyword: CMOS integrated circuits (ICs); Author-Supplied Keyword: delay estimation; Author-Supplied Keyword: Delays; Author-Supplied Keyword: electromagnetic interference; Author-Supplied Keyword: electromagnetic transients; Author-Supplied Keyword: immunity; Author-Supplied Keyword: Integrated circuit modeling; Author-Supplied Keyword: Inverters; Author-Supplied Keyword: Logic circuits; Author-Supplied Keyword: modeling; Author-Supplied Keyword: Power supplies; Author-Supplied Keyword: Propagation delay; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TEMC.2015.2428272 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110356194&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cumby, Brad L. AU - Mast, David B. AU - Tabor, Christopher E. AU - Dickey, Michael D. AU - Heikenfeld, Jason T1 - Robust Pressure-Actuated Liquid Metal Devices Showing Reconfigurable Electromagnetic Effects at GHz Frequencies. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques Y1 - 2015/10//Oct2015 Part 1 VL - 63 IS - 10a M3 - Article SP - 3122 EP - 3130 SN - 00189480 AB - Pressure-actuated liquid metal devices are demonstrated for reconfigurable electromagnetic fundamentals at GHz frequencies, including tunable dipole antennas, switchable shielding with 35-dB attenuation, \sim\!\! \30-dB polarizer attenuation, and \sim \!\!\!\!\40^\circ diffraction from a linear grating. In addition to a wide variety of electromagnetic effects, these devices are further advanced by: being highly physically flexible; in use of nontoxic GaInSn (68.5% Ga, 21.5% In, and 10.0% Sn) alloy as enabled by a sealed closed system with an acidic vapor background; and nonalloying/corrosion-resistant carbon inks for electrical connection. Collectively, this work addresses a wide variety of electromagnetic fundamentals, and the device construction advances required for real-world applications. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNAS (Electronics) KW - DIFFRACTION of electromagnetic waves KW - MICROFLUIDIC devices KW - POLARIZATION (Electricity) KW - LIQUID metals KW - Antennas KW - attenuation KW - diffraction KW - Electromagnetic waveguides KW - Electromagnetics KW - liquid metal KW - Liquids KW - Metals KW - microfluidics KW - Microwave devices KW - polarization KW - shielding KW - Switches N1 - Accession Number: 110172059; Cumby, Brad L. 1 Mast, David B. 2 Tabor, Christopher E. 3 Dickey, Michael D. 4 Heikenfeld, Jason 1; Affiliation: 1: Dept. of Electrical Engineering and Computing Systems, University of Cincinnati, Cincinnati, Ohio, USA 2: Department of Physics, University of Cincinnati, Cincinnati, Ohio, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson, Ohio, USA 4: Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina, USA; Source Info: Oct2015 Part 1, Vol. 63 Issue 10a, p3122; Subject Term: ANTENNAS (Electronics); Subject Term: DIFFRACTION of electromagnetic waves; Subject Term: MICROFLUIDIC devices; Subject Term: POLARIZATION (Electricity); Subject Term: LIQUID metals; Author-Supplied Keyword: Antennas; Author-Supplied Keyword: attenuation; Author-Supplied Keyword: diffraction; Author-Supplied Keyword: Electromagnetic waveguides; Author-Supplied Keyword: Electromagnetics; Author-Supplied Keyword: liquid metal; Author-Supplied Keyword: Liquids; Author-Supplied Keyword: Metals; Author-Supplied Keyword: microfluidics; Author-Supplied Keyword: Microwave devices; Author-Supplied Keyword: polarization; Author-Supplied Keyword: shielding; Author-Supplied Keyword: Switches; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TMTT.2015.2470244 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110172059&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Deshmukh, Rohit AU - Culler, Adam J. AU - Miller, Brent A. AU - McNamara, Jack J. T1 - Response of skin panels to combined self- and boundary layer-induced fluctuating pressure. JO - Journal of Fluids & Structures JF - Journal of Fluids & Structures Y1 - 2015/10// VL - 58 M3 - Article SP - 216 EP - 235 SN - 08899746 AB - Fluctuating pressures are a critical consideration in the life-prediction of thin-gauge hot-structures operating in high-speed flow. Sources include both boundary layer turbulence and self-induced components, where the latter arises from panel vibrations. While a considerable body of research is available for the structural response of thin-gauge panels to self-induced pressure fluctuations, the response to boundary layer turbulence is not well-understood due to the complexity in modeling the loads. Important open issues are the degree of coupling between the boundary layer induced fluctuating loads and the thermo-structural response, and also the potential for interactions between a turbulent boundary layer and structural response to result in structural instabilities. This study seeks to address these issues by incorporating a phenomenological model for turbulent boundary layer loads into an aerothermoelastic framework. The enhanced aerothermoelastic model is then used to study the combined effect of self- and boundary layer-induced fluctuating pressures on responses of simple panels, and to characterize features in the turbulent boundary layer loads that can lead to large amplitude structural vibrations. The developed phenomenological model predicts that the magnitude of the boundary layer induced fluctuating pressure increases with increasing panel inclination, and decreases with increasing temperature. Furthermore, it is found that both RMS magnitude and phase angle of the boundary layer induced pressure loads play key roles in panel response. Certain combinations of these features, coupled with the self-induced pressure fluctuations, are found to cause onset of fluid–structural instabilities earlier than observed when pressure fluctuations from the turbulent boundary layer are either neglected or decoupled from the panel response. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TURBULENT boundary layer KW - PREDICTION models KW - VIBRATION (Mechanics) KW - PHENOMENOLOGICAL theory (Physics) KW - TEMPERATURE effect KW - FLUID-structure interaction KW - Aerothermoelasticity KW - Fluid–thermal–structural interaction KW - Panel flutter KW - Turbulence N1 - Accession Number: 110254260; Deshmukh, Rohit 1 Culler, Adam J. 2 Miller, Brent A. 1 McNamara, Jack J. 1; Email Address: mcnamara.190@osu.edu; Affiliation: 1: Mechanical & Aerospace Engineering, The Ohio State University, E440 Scott Laboratory, 201. W 19th Ave., Columbus, OH 43210, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Oct2015, Vol. 58, p216; Subject Term: TURBULENT boundary layer; Subject Term: PREDICTION models; Subject Term: VIBRATION (Mechanics); Subject Term: PHENOMENOLOGICAL theory (Physics); Subject Term: TEMPERATURE effect; Subject Term: FLUID-structure interaction; Author-Supplied Keyword: Aerothermoelasticity; Author-Supplied Keyword: Fluid–thermal–structural interaction; Author-Supplied Keyword: Panel flutter; Author-Supplied Keyword: Turbulence; Number of Pages: 20p; Document Type: Article L3 - 10.1016/j.jfluidstructs.2015.08.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110254260&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, James T1 - A Moral Tower of Babel? JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2015/10//Oct-Dec2015 VL - 14 IS - 3/4 M3 - Article SP - 280 EP - 281 SN - 15027570 AB - The article focuses on extra judicial killings conducted by the Afghan National Police in alliance with U.S. armed forces in the state of Kandahar, Afghanistan. Topics include replacing the fundamentalist group Talibans for Afghan allies in the event of U.S. kinetic attacks, efforts from the government and military in reducing moral compromise. KW - ARMED Forces KW - EXTRAJUDICIAL executions KW - COMPROMISE (Law) -- Moral & ethical aspects KW - AFGHANISTAN KW - AFGHANISTAN -- Foreign relations -- United States KW - TALIBAN -- History -- 21st century N1 - Accession Number: 111969119; Cook, James 1; Affiliation: 1: United States Air Force Academy, Colorado Springs, CO, USA; Source Info: Oct-Dec2015, Vol. 14 Issue 3/4, p280; Subject Term: ARMED Forces; Subject Term: EXTRAJUDICIAL executions; Subject Term: COMPROMISE (Law) -- Moral & ethical aspects; Subject Term: AFGHANISTAN; Subject Term: AFGHANISTAN -- Foreign relations -- United States; Company/Entity: TALIBAN -- History -- 21st century; Number of Pages: 2p; Document Type: Article L3 - 10.1080/15027570.2015.1128665 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111969119&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chapa, Joseph O. T1 - Drones and the Ethics of Targeted Killing. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2015/10//Oct-Dec2015 VL - 14 IS - 3/4 M3 - Book Review SP - 284 EP - 286 SN - 15027570 KW - DRONE aircraft KW - NONFICTION KW - MORAL & ethical aspects KW - HIMES, Kenneth KW - DRONES & the Ethics of Targeted Killing (Book) N1 - Accession Number: 111969116; Chapa, Joseph O. 1; Affiliation: 1: Captain, US Air Force, Department of Philosophy, US Air Force Academy, Colorado, USA; Source Info: Oct-Dec2015, Vol. 14 Issue 3/4, p284; Subject Term: DRONE aircraft; Subject Term: NONFICTION; Subject Term: MORAL & ethical aspects; Reviews & Products: DRONES & the Ethics of Targeted Killing (Book); People: HIMES, Kenneth; Number of Pages: 3p; Document Type: Book Review L3 - 10.1080/15027570.2015.1127719 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111969116&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Klimova, M. AU - Zherebtsov, S. AU - Salishchev, G. AU - Semiatin, S.L. T1 - Influence of deformation on the Burgers orientation relationship between the α and β phases in Ti–5Al–5Mo–5V–1Cr–1Fe. JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2015/10// VL - 645 M3 - Article SP - 292 EP - 297 SN - 09215093 AB - The evolution of microstructure in Ti–5Al–5Mo–5V–1Cr–1Fe with an initial lamellar microstructure during compression to a true strain 1.2 at 800 °C was established via EBSD analysis. The principal features comprised recrystallization of the β matrix and fragmentation/spheroidization of α lamellae. Angular deviations from the Burgers orientation relation (OR) and the kinetics of the spheroidization of lamellar microstructure as a function of strain were quantified. The influence of the deviation from the OR on spheroidization kinetics of the lamellar structure was interpreted. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HAMBURGERS KW - DEFORMATIONS (Mechanics) KW - LAMELLAR ichthyosis KW - RECRYSTALLIZATION (Metallurgy) KW - DYNAMICS KW - EBSD KW - Interfaces KW - Orientation relationships KW - Titanium alloys N1 - Accession Number: 109179905; Klimova, M. 1; Email Address: klimova-margarita@mail.ru Zherebtsov, S. 1 Salishchev, G. 1 Semiatin, S.L. 2; Affiliation: 1: Belgorod State University, 85 Pobeda Street, Belgorod 308015, Russia 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Oct2015, Vol. 645, p292; Subject Term: HAMBURGERS; Subject Term: DEFORMATIONS (Mechanics); Subject Term: LAMELLAR ichthyosis; Subject Term: RECRYSTALLIZATION (Metallurgy); Subject Term: DYNAMICS; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: Interfaces; Author-Supplied Keyword: Orientation relationships; Author-Supplied Keyword: Titanium alloys; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.msea.2015.08.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109179905&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tippets, Roger D. AU - Wakefield, Stephen AU - Shannon Young AU - Ferguson, Ian AU - Earp-Pitkins, Christopher AU - Chun, Francis K. T1 - Slitless spectroscopy of geosynchronous satellites. JO - Optical Engineering JF - Optical Engineering Y1 - 2015/10// VL - 54 IS - 10 M3 - Article SP - 104103-1 EP - 104103-7 SN - 00913286 AB - A preliminary investigation into the use of slitless spectroscopy for characterization of geosynchronous satellites is described. A 100 line/mm diffraction grating is used as the dispersing device, and the spectral data obtained are compared to a model with good results. A method used to collect and calibrate slitless spectral observations accounting for pixel to wavelength conversion, pixel response as a function of wavelength, and solar features is presented. Observations of several geosynchronous satellites throughout a night reveal reflectance with noticeable and different profiles indicating that slitless spectroscopy offers the potential for another modality for identifying and discriminating satellites. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GEOSTATIONARY satellites KW - SPECTROMETRY KW - ALGORITHMS KW - OPTICAL engineering KW - OPTICAL amplifiers KW - satellite characterization KW - slitless spectroscopy KW - space situational awareness N1 - Accession Number: 111431168; Tippets, Roger D. 1; Email Address: roger.tippets.ctr@usafa.edu Wakefield, Stephen 1 Shannon Young 1 Ferguson, Ian 1 Earp-Pitkins, Christopher 1 Chun, Francis K. 1; Affiliation: 1: United States Air Force Academy, Department of Physics, 2354 Fairchild Drive, Suite 2A31, Colorado 80840, United States; Source Info: Oct2015, Vol. 54 Issue 10, p104103-1; Subject Term: GEOSTATIONARY satellites; Subject Term: SPECTROMETRY; Subject Term: ALGORITHMS; Subject Term: OPTICAL engineering; Subject Term: OPTICAL amplifiers; Author-Supplied Keyword: satellite characterization; Author-Supplied Keyword: slitless spectroscopy; Author-Supplied Keyword: space situational awareness; Number of Pages: 7p; Document Type: Article L3 - 10.1117/1.OE.54.10.104103 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111431168&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Demidov, V. I. AU - Adams, S. F. AU - Kaganovich, I. D. AU - Koepke, M. E. AU - Kurlyandskaya, I. P. T1 - Measurements of low-energy electron reflection at a plasma boundary. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2015/10// VL - 22 IS - 10 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 1070664X AB - It is demonstrated that low-energy (<3 eV) electron reflection from a solid surface in contact with a low-temperature plasma can have significant variation with time. An uncontaminated, i.e., "clean," metallic surface (just after heating up to glow) in a plasma environment may have practically no reflection of low-energy incident electrons. However, a contaminated, i.e., "dirty," surface (in some time after cleaning by heating) that has a few monolayers of absorbent can reflect low-energy incident electrons and therefore significantly affect the net electron current collected by the surface. This effect may significantly change plasma properties and should be taken into account in plasma experiments and models. A diagnostic method is demonstrated for measurements of low-energy electron absorption coefficient in plasmas with a mono-energetic electron group. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA boundary layers KW - LOW temperature plasmas KW - REFLECTION (Optics) KW - SURFACES (Technology) KW - METALLIC surfaces KW - PHYSICS experiments N1 - Accession Number: 110719883; Demidov, V. I. 1,2; Email Address: vladimir.demidov@mail.wvu.edu Adams, S. F. 1 Kaganovich, I. D. 3 Koepke, M. E. 2 Kurlyandskaya, I. P. 4,5; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 2: Department of Physics and Astronomy, West Virginia University, Morgantown, West Virginia 26506, USA 3: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA 4: Department of Optics and Spectroscopy, St. Petersburg State University, St. Petersburg 199034, Russia 5: International Laboratory "Nonlocal Plasma in Nanotechnology and Medicine," ITMO University, St. Petersburg 197101, Russia; Source Info: 2015, Vol. 22 Issue 10, p1; Subject Term: PLASMA boundary layers; Subject Term: LOW temperature plasmas; Subject Term: REFLECTION (Optics); Subject Term: SURFACES (Technology); Subject Term: METALLIC surfaces; Subject Term: PHYSICS experiments; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.4933002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110719883&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Biffinger, Justin C. AU - Barlow, Daniel E. AU - Cockrell, Allison L. AU - Cusick, Kathleen D. AU - Hervey, William J. AU - Fitzgerald, Lisa A. AU - Nadeau, Lloyd J. AU - Hung, Chia S. AU - Crookes-Goodson, Wendy J. AU - Jr.Russell, John N. T1 - The applicability of Impranil®DLN for gauging the biodegradation of polyurethanes. JO - Polymer Degradation & Stability JF - Polymer Degradation & Stability Y1 - 2015/10// VL - 120 M3 - Article SP - 178 EP - 185 SN - 01413910 AB - Polyurethane-based polymers and their eventual degradation products pervade modern society. One common method for determining whether a microorganism or protein can degrade this class of polymer is to qualitatively assess its ability to “clear” a polyester-polyurethane colloid branded Impranil ® DLN (Impranil), whose formulation is proprietary. However, its colloidal state has ultimately made Impranil a precarious choice for determining if an organism or enzyme can degrade polyurethanes. In this work, the chemical hydrolysis products from Impranil using 0.1 M HCl or 0.1 M NaOH were identified and compared to the concentration of hydrolysis products formed using three commercial enzymes by proton nuclear magnetic spectroscopy ( 1 H NMR) and Fourier-transform infrared spectroscopy (FT-IR). The differences in the integrated signal intensities from key 1 H NMR signals were used to calculate the amount of Impranil that was hydrolyzed. These data were then correlated with the change in optical density of colloid containing reaction mixtures (termed as “clearing”). The enzymes (a Pseudomonas fluorescens recombinant esterase, Pseudomonas sp. lipase, and Bacillus sp. protease) showed significant esterase activities and partially-cleared, completely-cleared, or aggregated Impranil, respectively. However, only the Pseudomonas sp. lipase significantly degraded Impranil based on NMR and IR data. This study illustrates how Impranil can be used to quantitatively assess biodegradation rather than just be a qualitative “clearing” indicator of biodegradation. [ABSTRACT FROM AUTHOR] AB - Copyright of Polymer Degradation & Stability is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYURETHANES KW - POLYMERS -- Biodegradation KW - POLYESTERS KW - NUCLEAR magnetic resonance KW - HYDROLYSIS KW - COLLOIDS KW - Biodegradation KW - Colloid KW - Hydrolase KW - IR KW - NMR KW - Polyurethane N1 - Accession Number: 109956082; Biffinger, Justin C. 1; Email Address: Justin.biffinger@nrl.navy.mil Barlow, Daniel E. 1 Cockrell, Allison L. 2 Cusick, Kathleen D. 2 Hervey, William J. 3 Fitzgerald, Lisa A. 1 Nadeau, Lloyd J. 4 Hung, Chia S. 4 Crookes-Goodson, Wendy J. 4 Jr.Russell, John N. 1; Affiliation: 1: Chemistry Division, US Naval Research Laboratory, 4555 Overlook Ave., SW, Washington DC 20375, USA 2: NRC Post-doctoral Associate, US Naval Research Laboratory, 4555 Overlook Ave., SW, Washington DC 20375, USA 3: Center for Bio/Molecular Science and Engineering, US Naval Research Laboratory, 4555 Overlook Ave., SW., Washington DC 20375, USA 4: Soft Matter Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Oct2015, Vol. 120, p178; Subject Term: POLYURETHANES; Subject Term: POLYMERS -- Biodegradation; Subject Term: POLYESTERS; Subject Term: NUCLEAR magnetic resonance; Subject Term: HYDROLYSIS; Subject Term: COLLOIDS; Author-Supplied Keyword: Biodegradation; Author-Supplied Keyword: Colloid; Author-Supplied Keyword: Hydrolase; Author-Supplied Keyword: IR; Author-Supplied Keyword: NMR; Author-Supplied Keyword: Polyurethane; NAICS/Industry Codes: 313110 Fiber, Yarn, and Thread Mills; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.polymdegradstab.2015.06.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109956082&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Payne, Brian C. AU - Tresl, Jiri AD - US Air Force Academy AD - U NE T1 - Hedge Fund Replication with a Genetic Algorithm: Breeding a Usable Mousetrap JO - Quantitative Finance JF - Quantitative Finance Y1 - 2015/10// VL - 15 IS - 10 SP - 1705 EP - 1726 SN - 14697688 N1 - Accession Number: 1548298; Keywords: Bond; Hedge Fund; Mutual Fund; Portfolio; Stocks; Geographic Descriptors: Selected Countries; Publication Type: Journal Article; Update Code: 201602 N2 - This study tests the performance of 14 hedge fund index clones created using parsimonious out-of-sample replication portfolios consisting solely of easily accessible assets. We employ a genetic algorithm to integrate two traditional hedge fund replication methods, the factor-based and pay-off distribution replication methods, and evaluate over 4500 commonly held stocks, bonds and mutual funds as replicating portfolio components. In-sample performance indicates that hedge funds have return series similar to portfolios of commonly held assets, and out-of-sample results provide evidence that the in-sample relationships can hold with infrequent rebalancing. This hedge fund replication attempt rates well relatively to prior efforts as 11 replicating portfolios have out-of-sample correlation values of at least 60%. Overall, these results show promise for using a genetic algorithm technique to replicate hedge fund returns. KW - Optimization Techniques; Programming Models; Dynamic Analysis C61 KW - Portfolio Choice; Investment Decisions G11 KW - Asset Pricing; Trading Volume; Bond Interest Rates G12 KW - Pension Funds; Non-bank Financial Institutions; Financial Instruments; Institutional Investors G23 L3 - http://www.tandfonline.com/loi/rquf20 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1548298&site=ehost-live&scope=site UR - http://www.tandfonline.com/loi/rquf20 DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 2016-27609-002 AN - 2016-27609-002 AU - Geiselman, Eric E. AU - Quill, Laurie Larsen AU - Cox, Noel J. AU - Dubois, Jeffrey A. T1 - Airdrop guidance display format for precision airdrop application on an auxiliary display equipped aircraft. JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 2015/10// VL - 25 IS - 3-4 SP - 141 EP - 156 CY - United Kingdom PB - Taylor & Francis SN - 1050-8414 SN - 1532-7108 AD - Quill, Laurie Larsen, Human Factors Solutions, LLC, 432 Winding Way Rd., Dayton, OH, US, 45429 N1 - Accession Number: 2016-27609-002. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Geiselman, Eric E.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Other Publishers: Lawrence Erlbaum. Release Date: 20170112. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Altitude Effects; Graphical Displays; Performance. Classification: Human Factors Engineering (4010). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Interview; Quantitative Study. Page Count: 16. Issue Publication Date: Oct, 2015. Copyright Statement: Taylor & Francis Group, LLC. 2015. AB - Objective: To evaluate a new display format for Airdrop Guidance intended to enhance precision-flight capability for high-altitude single-pass airdrop profiles. Background: Operational military environments are demanding that airdrops are increasingly precise while simultaneously protecting Air Force assets through high-altitude drops. Efforts are underway at the Air Force Research Laboratory to minimize the negative effect of human performance variability on high-altitude airdrop accuracy. Precision guidance to the calculated air release point, as presented through the new display, offers potential reduction in flight performance variability. Method: Four U.S. Air Force pilots, current in the C-17, participated in a within-subjects evaluation of the airdrop guidance display. Each pilot was scheduled to fly a total of 16 trials. The out-the-window scene (presented or blanked) effects were also assessed. Results: Results suggest improved performance over existing methods of airdrop guidance as measured by both aircraft position at green light and the comparison between actual and optimal flightpaths. Conclusion: The airdrop guidance display format, tested for precision flight, could significantly reduce flight performance error associated with high-altitude airdrop missions. Additionally, implementation of the display shows potential for increasing overall airdrop accuracy. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - airdrop guidance KW - display format KW - high altitude KW - auxiliary display KW - pilots aircraft KW - performance KW - 2015 KW - Aircraft Pilots KW - Altitude Effects KW - Graphical Displays KW - Performance KW - 2015 DO - 10.1080/10508414.2015.1162630 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-27609-002&site=ehost-live&scope=site UR - llquill1234@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-51832-007 AN - 2015-51832-007 AU - Mastroianni, George R. T1 - Obedience in perspective: Psychology and the Holocaust. JF - Theory & Psychology JO - Theory & Psychology JA - Theory Psychol Y1 - 2015/10// VL - 25 IS - 5 SP - 657 EP - 669 CY - US PB - Sage Publications SN - 0959-3543 SN - 1461-7447 AD - Mastroianni, George R., US Air Force Academy, Department of Behavioral Sciences and Leadership, DFBL, USAFA, CO, US, 80840 N1 - Accession Number: 2015-51832-007. Partial author list: First Author & Affiliation: Mastroianni, George R.; US Air Force Academy, CO, US. Release Date: 20160317. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Genocide; Holocaust; Obedience; Social Psychology. Classification: Social Processes & Social Issues (2900). Population: Human (10). References Available: Y. Page Count: 13. Issue Publication Date: Oct, 2015. Copyright Statement: The Author(s). 2015. AB - Stanley Milgram’s explanation of the Holocaust in terms of the mechanism of obedience is too narrow. While obedience was one mechanism which contributed to the outcome, the murder of Jews and others was the work of people from a broad swath of German society, from economists who planned mass starvation to ordinary soldiers in the Wehrmacht, often acting without duress or apparent pressures to conform. Psychologists should not ask 'why?' the Holocaust occurred, but 'how?' Much behavior of perpetrators, bystanders, victims, and instigators can be understood as the consequence of normal mechanisms of perception, learning, socialization, and development. What made genocide possible was not the transitory conditions created in a lab in a few hours but a complex of mechanisms that are the product of generations of human experience and of elaborate rational, emotional, and logical justifications. This requires a more complex future psychology than the narrow focus on situationist obedience. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - genocide KW - Holocaust KW - Milgram KW - obedience KW - situationism KW - 2015 KW - Genocide KW - Holocaust KW - Obedience KW - Social Psychology KW - 2015 DO - 10.1177/0959354315608963 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-51832-007&site=ehost-live&scope=site UR - george.mastroianni@usafa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-39654-001 AN - 2015-39654-001 AU - Veksler, Vladislav D. AU - Myers, Christopher W. AU - Gluck, Kevin A. T1 - Model flexibility analysis. JF - Psychological Review JO - Psychological Review JA - Psychol Rev Y1 - 2015/10// VL - 122 IS - 4 SP - 755 EP - 769 CY - US PB - American Psychological Association SN - 0033-295X SN - 1939-1471 AD - Veksler, Vladislav D., DCS Corp, U.S. Army Research Laboratory, Building 417, Aberdeen Proving Ground, Aberdeen, MD, US, 21001 N1 - Accession Number: 2015-39654-001. Partial author list: First Author & Affiliation: Veksler, Vladislav D.; Human Research & Engineering, DCS Corporation, U.S. Army Research Laboratory, Aberdeen Proving Ground, Aberdeen, MD, US. Other Publishers: Macmillan & Company; Psychological Review Company; The Macmillan Company; The Review Publishing Company. Release Date: 20150831. Correction Date: 20151005. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Veksler, Vladislav D. Major Descriptor: Evaluation; Goodness of Fit; Mathematical Modeling. Classification: Statistics & Mathematics (2240). Methodology: Mathematical Model; Scientific Simulation. References Available: Y. Page Count: 15. Issue Publication Date: Oct, 2015. Publication History: First Posted Date: Aug 31, 2015; Accepted Date: Jul 8, 2015; Revised Date: Jun 30, 2015; First Submitted Date: Jul 16, 2014. AB - A good fit of model predictions to empirical data are often used as an argument for model validity. However, if the model is flexible enough to fit a large proportion of potential empirical outcomes, finding a good fit becomes less meaningful. We propose a method for estimating the proportion of potential empirical outcomes that the model can fit: Model Flexibility Analysis (MFA). MFA aids model evaluation by providing a metric for gauging the persuasiveness of a given fit. We demonstrate that MFA can be more informative than merely discounting the fit by the number of free parameters in the model, and show how the number of free parameters does not necessarily correlate with the flexibility of the model. Additionally, we contrast MFA with other flexibility assessment techniques, including Parameter Space Partitioning, Model Mimicry, Minimum Description Length, and Prior Predictive Evaluation. Finally, we provide examples of how MFA can help to inform modeling results and discuss a variety of issues relating to the use of MFA in model validation. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - model evaluation KW - model selection KW - goodness of fit KW - model flexibility KW - parametric complexity KW - 2015 KW - Evaluation KW - Goodness of Fit KW - Mathematical Modeling KW - 2015 U1 - Sponsor: National Research Council. Other Details: Research Associateship Award with the Air Force Research Laboratory’s Cognitive Models and Agents Branch. Recipients: Veksler, Vladislav D. U1 - Sponsor: AFOSR. Grant: 13RH06COR. Recipients: No recipient indicated U1 - Sponsor: Army Research Laboratory. Grant: W911NF-10-D-0002. Other Details: as a DCS Corp contractor. Recipients: Veksler, Vladislav D. U1 - Sponsor: Sponsor name not included. Grant: W911NF-09-2-0053. Other Details: Cooperative Agreement. Recipients: Veksler, Vladislav D. DO - 10.1037/a0039657 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-39654-001&site=ehost-live&scope=site UR - vdv718@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR AU - J R Harris AU - K L Jensen AU - D A Shiffler T1 - Modelling field emitter arrays using line charge distributions. JO - Journal of Physics: D Applied Physics JF - Journal of Physics: D Applied Physics Y1 - 2015/09/30/ VL - 48 IS - 38 M3 - Article SP - 1 EP - 1 SN - 00223727 AB - Field emitter arrays are high-brightness electron sources with important current and future applications in vacuum electronics, particle accelerators, and directed energy. The current produced by individual emitters in these arrays is controlled by the total electric field on their surfaces, which depends on the background field, the space charge field from previously-emitted electrons, and field enhancements due to geometric features at the macro-, meso-, and micro-scales. To facilitate the study of shielding and space charge effects in these arrays, we have developed a mathematical model using tapered line charges to generate equipotential surfaces which approximate the geometry of high aspect ratio field emitters. This model provides an analytic approach for studying contributions to array performance due to macro-scale and meso-scale features such as array geometry, emitter height, and emitter tip radius. Here we present this model and use it to assess the impact of these parameters on the field enhancement factor of individual field emitters and emitters in 1D and 2D arrays. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: D Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIELD emitter arrays KW - ELECTROSTATICS KW - CATHODES KW - ELECTRIC fields KW - SPACE charge N1 - Accession Number: 109322498; J R Harris 1; Email Address: john.r.harris3@navy.mil K L Jensen 2 D A Shiffler 3; Affiliation: 1: U.S. Navy Reserve, Navy Operational Support Center New Orleans, New Orleans, LA 70143, USA 2: Code 6364, Naval Research Laboratory, Washington, DC 20375, USA 3: Directed Energy Directorate, Air Force Research Laboratory, Albuquerque, NM 87117, USA; Source Info: 9/30/2015, Vol. 48 Issue 38, p1; Subject Term: FIELD emitter arrays; Subject Term: ELECTROSTATICS; Subject Term: CATHODES; Subject Term: ELECTRIC fields; Subject Term: SPACE charge; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0022-3727/48/38/385203 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109322498&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H. J. AU - Brown, G. J. AU - Olson, B. V. AU - Kadlec, E. A. AU - Kim, J. K. AU - Shaner, E. A. T1 - Demonstration of long minority carrier lifetimes in very narrow bandgap ternary InAs/GaInSb superlattices. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2015/09/28/ VL - 107 IS - 13 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00036951 AB - Minority carrier lifetimes in very long wavelength infrared (VLWIR) InAs/GaInSb superlattices (SLs) are reported using time-resolved microwave reflectance measurements. A strain-balanced ternary SL absorber layer of 47.0 Å InAs/21.5 Å Ga0.75In0.25Sb, corresponding to a bandgap of ~50 meV, is found to have a minority carrier lifetime of 140±20 ns at ~18 K. This lifetime is extraordinarily long, when compared to lifetime values previously reported for other VLWIR SL detector materials. This enhancement is attributed to the strain-engineered ternary design, which offers a variety of epitaxial advantages and ultimately leads to a reduction of defect-mediated recombination centers. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDIUM arsenide KW - GALLIUM antimonide KW - ENERGY gaps (Physics) KW - INDIUM antimonide KW - HOLE mobility KW - SUPERLATTICES KW - CRYSTAL defects KW - TERNARY semiconductors N1 - Accession Number: 110121587; Haugan, H. J. 1; Email Address: heather.haugan.ctr@us.af.mil Brown, G. J. 1 Olson, B. V. 2 Kadlec, E. A. 2 Kim, J. K. 2 Shaner, E. A. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Sandia National Laboratories, Albuquerque, New Mexico 87185, USA; Source Info: 2015, Vol. 107 Issue 13, p1; Subject Term: INDIUM arsenide; Subject Term: GALLIUM antimonide; Subject Term: ENERGY gaps (Physics); Subject Term: INDIUM antimonide; Subject Term: HOLE mobility; Subject Term: SUPERLATTICES; Subject Term: CRYSTAL defects; Subject Term: TERNARY semiconductors; Number of Pages: 4p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.4932056 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110121587&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Park, Jeongho AU - Back, Tyson AU - Mitchel, William C. AU - Kim, Steve S. AU - Elhamri, Said AU - Boeckl, John AU - Fairchild, Steven B. AU - Naik, Rajesh AU - Voevodin, Andrey A. T1 - Approach to multifunctional device platform with epitaxial graphene on transition metal oxide. JO - Scientific Reports JF - Scientific Reports Y1 - 2015/09/25/ M3 - Article SP - 14374 SN - 20452322 AB - Heterostructures consisting of two-dimensional materials have shown new physical phenomena, novel electronic and optical properties, and new device concepts not observed in bulk material systems or purely three dimensional heterostructures. These new effects originated mostly from the van der Waals interaction between the different layers. Here we report that a new optical and electronic device platform can be provided by heterostructures of 2D graphene with a metal oxide (TiO2). Our novel direct synthesis of graphene/TiO2 heterostructure is achieved by C60 deposition on transition Ti metal surface using a molecular beam epitaxy approach and O2 intercalation method, which is compatible with wafer scale growth of heterostructures. As-grown heterostructures exhibit inherent photosensitivity in the visible light spectrum with high photo responsivity. The photo sensitivity is 25 times higher than that of reported graphene photo detectors. The improved responsivity is attributed to optical transitions between O 2p orbitals in the valence band of TiO2 and C 2p orbitals in the conduction band of graphene enabled by Coulomb interactions at the interface. In addition, this heterostructure provides a platform for realization of bottom gated graphene field effect devices with graphene and TiO2 playing the roles of channel and gate dielectric layers, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Scientific Reports is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPHENE KW - RESEARCH KW - TRANSITION metal oxides KW - HETEROSTRUCTURES KW - MOLECULAR beam epitaxy KW - VAN der Waals forces N1 - Accession Number: 109968183; Park, Jeongho 1 Back, Tyson Mitchel, William C. 1 Kim, Steve S. 1 Elhamri, Said 2 Boeckl, John 1 Fairchild, Steven B. 1 Naik, Rajesh 1 Voevodin, Andrey A. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RXA) Wright-Patterson AFB, OH 45433-7707 2: Departments of Physics, University of Dayton, Dayton, Ohio 45469.; Source Info: 9/25/2015, p14374; Subject Term: GRAPHENE; Subject Term: RESEARCH; Subject Term: TRANSITION metal oxides; Subject Term: HETEROSTRUCTURES; Subject Term: MOLECULAR beam epitaxy; Subject Term: VAN der Waals forces; Number of Pages: 1p; Document Type: Article L3 - 10.1038/srep14374 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109968183&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Galbraith, Marshall C. AU - Benek, John A. AU - Orkwis, Paul D. AU - Turner, Mark G. T1 - A discontinuous Galerkin scheme for Chimera overset viscous meshes on curved geometries. JO - Computers & Fluids JF - Computers & Fluids Y1 - 2015/09/22/ VL - 119 M3 - Article SP - 176 EP - 196 SN - 00457930 AB - The Chimera overset method is a powerful technique for modeling fluid flow associated with complex engineering problems. The use of structured meshes has enabled engineers to develop a number of high-order schemes, such as the WENO and compact differencing schemes. This paper demonstrates a Discontinuous Galerkin (DG) scheme with a Chimera overset method applied to viscous meshes on curved geometries. The small stencil of the DG scheme makes it particularly suitable for Chimera meshes. The small stencil simplifies the hole cutting and partitioning of grids that contain holes. In addition, because the DG scheme represents the solution as cell local polynomials, it does not require an interpolation scheme with a large stencil to establish the inter-grid communication in overlapping regions. Furthermore, the DG scheme is capable of using curved cells to represent geometric features. The curved cells resolve issues associated with linear non-co-located Chimera viscous meshes used for finite volume and finite difference schemes. The DG-Chimera method is demonstrated on a set of viscous Chimera meshes, which would produce erroneous results for a finite volume or finite difference scheme without corrections to the interpolation. [ABSTRACT FROM AUTHOR] AB - Copyright of Computers & Fluids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISCONTINUOUS functions KW - GALERKIN methods KW - SCHEME (Computer program language) KW - VISCOUS flow KW - GEOMETRIC analysis KW - POLYNOMIALS KW - Chimera overset method KW - Discontinuous Galerkin N1 - Accession Number: 108845374; Galbraith, Marshall C. 1; Email Address: Marshall.Galbraith@gmail.com Benek, John A. 2 Orkwis, Paul D. 1 Turner, Mark G. 1; Affiliation: 1: University of Cincinnati, Department of Aerospace Engineering and Engineering Mechanics, Cincinnati, OH 45221, United States 2: U.S. Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson Air Force Base, OH 45433, United States; Source Info: Sep2015, Vol. 119, p176; Subject Term: DISCONTINUOUS functions; Subject Term: GALERKIN methods; Subject Term: SCHEME (Computer program language); Subject Term: VISCOUS flow; Subject Term: GEOMETRIC analysis; Subject Term: POLYNOMIALS; Author-Supplied Keyword: Chimera overset method; Author-Supplied Keyword: Discontinuous Galerkin; Number of Pages: 21p; Document Type: Article L3 - 10.1016/j.compfluid.2015.07.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108845374&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martinez Jr., Oscar AU - Ard, Shaun G. AU - Anyang Li AU - Shuman, Nicholas S. AU - Hua Guo AU - Viggiano, Albert A. T1 - Temperature-dependent kinetic measurements and quasi-classical trajectory studies for the OH+ + H2/D2 → H2O+/HDO+ + H/D reactions. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2015/09/21/ VL - 143 IS - 11 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00219606 AB - We have measured the temperature-dependent kinetics for the reactions of OH+ with H2 and D2 using a selected ion flow tube apparatus. Reaction occurs via atom abstraction to result in H2O+/HDO+ + H/D. Room temperature rate coefficients are in agreement with prior measurements and resulting temperature dependences are T0.11 for the hydrogen and T0.25 for the deuterated reactions. This work is prompted in part by recent theoretical work that mapped a full-dimensional global potential energy surface of H3O+ for the OH+ + H2 → H + H2O+ reaction [A. Li and H. Guo, J. Phys. Chem. A 118, 11168 (2014)], and reported results of quasi-classical trajectory calculations, which are extended to a wider temperature range and initial rotational state specification here. Our experimental results are in excellent agreement with these calculations which accurately predict the isotope effect in addition to an enhancement of the reaction rate constant due to the molecular rotation of OH+. The title reaction is of high importance to astrophysical models, and the temperature dependence of the rate coefficients determined here should now allow for better understanding of this reaction at temperatures more relevant to the interstellar medium. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUASI-classical trajectory method KW - TEMPERATURE measurements KW - HYDROGEN KW - SELECTED ion monitoring KW - POTENTIAL energy surfaces KW - INTERSTELLAR matter N1 - Accession Number: 109972857; Martinez Jr., Oscar 1 Ard, Shaun G. 1 Anyang Li 1,2 Shuman, Nicholas S. 1 Hua Guo 3; Email Address: hguo@unm.edu Viggiano, Albert A. 1; Email Address: afrl.rvborgmailbox@kirtland.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117-5776, USA 2: College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China 3: Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, USA; Source Info: 2015, Vol. 143 Issue 11, p1; Subject Term: QUASI-classical trajectory method; Subject Term: TEMPERATURE measurements; Subject Term: HYDROGEN; Subject Term: SELECTED ion monitoring; Subject Term: POTENTIAL energy surfaces; Subject Term: INTERSTELLAR matter; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 5p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.4931109 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109972857&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2015-43260-010 AN - 2015-43260-010 AU - Rohan, Joyce G. AU - Carhuatanta, Kim A. AU - McInturf, Shawn M. AU - Miklasevich, Molly K. AU - Jankord, Ryan T1 - Modulating hippocampal plasticity with in vivo brain stimulation. JF - The Journal of Neuroscience JO - The Journal of Neuroscience JA - J Neurosci Y1 - 2015/09/16/ VL - 35 IS - 37 SP - 12824 EP - 12832 CY - US PB - Society for Neuroscience SN - 0270-6474 SN - 1529-2401 AD - Rohan, Joyce G., Naval Medical Research Unit Dayton, Area B, Building 837, 2729 R Street, Wright Patterson Air Force Base, OH, US, 45433 N1 - Accession Number: 2015-43260-010. PMID: 26377469 Partial author list: First Author & Affiliation: Rohan, Joyce G.; Naval Medical Research Unit Dayton, Environmental Health Effects Directorate, Wright Patterson Air Force Base, OH, US. Release Date: 20151019. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Hippocampus; Synaptic Plasticity. Minor Descriptor: Motor Performance; Rats; Transcranial Magnetic Stimulation; Long-term Potentiation. Classification: Neuropsychology & Neurology (2520). Population: Animal (20); Male (30). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 9. Issue Publication Date: Sep 16, 2015. Publication History: Accepted Date: Aug 11, 2015; Revised Date: Aug 7, 2015; First Submitted Date: Jul 22, 2015. Copyright Statement: The authors. 2015. AB - Investigations into the use of transcranial direct current stimulation (tDCS) in relieving symptoms of neurological disorders and enhancing cognitive or motor performance have exhibited promising results. However, the mechanisms by which tDCS effects brain function remain under scrutiny. We have demonstrated that in vivo tDCS in rats produced a lasting effect on hippocampal synaptic plasticity, as measured using extracellular recordings. Ex vivo preparations of hippocampal slices from rats that have been subjected to tDCS of 0.10 or 0.25 mA for 30 min followed by 30 min of recovery time displayed a robust twofold enhancement in long-term potentiation (LTP) induction accompanied by a 30% increase in paired-pulse facilitation (PPF). The magnitude of the LTP effect was greater with 0.25 mA compared with 0.10 mA stimulations, suggesting a dose-dependent relationship between tDCS intensity and its effect on synaptic plasticity. To test the persistence of these observed effects, animals were stimulated in vivo for 30 min at 0.25 mA and then allowed to return to their home cage for 24 h. Observation of the enhanced LTP induction, but not the enhanced PPF, continued 24 h after completion of 0.25 mA of tDCS. Addition of the NMDA blocker AP-5 abolished LTP in both control and stimulated rats but maintained the PPF enhancement in stimulated rats. The observation of enhanced LTP and PPF after tDCS demonstrates that non-invasive electrical stimulation is capable of modifying synaptic plasticity. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - brain stimulation KW - extracellular recording KW - hippocampus KW - long term potentiation KW - rat KW - tDCS KW - 2015 KW - Hippocampus KW - Synaptic Plasticity KW - Motor Performance KW - Rats KW - Transcranial Magnetic Stimulation KW - Long-term Potentiation KW - 2015 U1 - Sponsor: Air Force Office of Scientific Research. Grant: 13RH14COR. Recipients: No recipient indicated U1 - Sponsor: National Research Council. Other Details: Postdoctoral fellowship award. Recipients: No recipient indicated U1 - Sponsor: Oak Ridge Institute for Science and Education. Other Details: Through an interagency agreement between the U.S. Department of Energy and NAMRU-D. Recipients: No recipient indicated DO - 10.1523/JNEUROSCI.2376-15.2015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-43260-010&site=ehost-live&scope=site UR - Joyce.Rohan.ctr@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Micci, Michael M. AU - Yepez, Jeffrey T1 - Measurement-based quantum lattice gas model of fluid dynamics in 2+1 dimensions. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2015/09/15/ VL - 92 IS - 3-B M3 - Article SP - 033302-1 EP - 033302-8 SN - 15393755 AB - Presented are quantum simulation results using a measurement-based quantum lattice gas algorithm for Navier-Stokes fluid dynamics in 2+1 dimensions. Numerical prediction of the kinematic viscosity was measured by the decay rate of an initial sinusoidal flow profile. Due to local quantum entanglement in the quantum lattice gas, the minimum kinematic viscosity in the measurement-based quantum lattice gas is lower than achievable in a classical lattice gas. The numerically predicted viscosities precisely match the theoretical predictions obtained with a mean field approximation. Uniform flow profile with double shear layers, on a 16K × 8K lattice, leads to the Kelvin-Helmholtz instability, breaking up the shear layer into pairs of counter-rotating vortices that eventually merge via vortex fusion and dissipate because of the nonzero shear viscosity. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LATTICE gas KW - NAVIER-Stokes equations KW - KINEMATIC viscosity KW - QUANTUM entanglement KW - REYNOLDS number KW - MOLECULAR dynamics N1 - Accession Number: 110497958; Micci, Michael M. 1 Yepez, Jeffrey 2,3; Affiliation: 1: Department of Aerospace Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA 2: Air Force Research Laboratory/Directed Energy, Kihei, Hawaii 96753, USA 3: Department of Physics and Astronomy, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA; Source Info: Sep2015, Vol. 92 Issue 3-B, p033302-1; Subject Term: LATTICE gas; Subject Term: NAVIER-Stokes equations; Subject Term: KINEMATIC viscosity; Subject Term: QUANTUM entanglement; Subject Term: REYNOLDS number; Subject Term: MOLECULAR dynamics; Number of Pages: 8p; Document Type: Article L3 - 10.1103/PhysRevE.92.033302 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110497958&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gianulis, Elena C. AU - Lee, Jimo AU - Jiang, Chunqi AU - Xiao, Shu AU - Ibey, Bennet L. AU - Pakhomov, Andrei G. T1 - Electroporation of mammalian cells by nanosecond electric field oscillations and its inhibition by the electric field reversal. JO - Scientific Reports JF - Scientific Reports Y1 - 2015/09/11/ M3 - Article SP - 13818 SN - 20452322 AB - The present study compared electroporation efficiency of bipolar and unipolar nanosecond electric field oscillations (NEFO). Bipolar NEFO was a damped sine wave with 140 ns first phase duration at 50% height; the peak amplitude of phases 2-4 decreased to 35%, 12%, and 7% of the first phase. This waveform was rectified to produce unipolar NEFO by cutting off phases 2 and 4. Membrane permeabilization was quantified in CHO and GH3 cells by uptake of a membrane integrity marker dye YO-PRO-1 (YP) and by the membrane conductance increase measured by patch clamp. For treatments with 1-20 unipolar NEFO, at 9.6-24 kV/cm, 10 Hz, the rate and amount of YP uptake were consistently 2-3-fold higher than after bipolar NEFO treatments, despite delivering less energy. However, the threshold amplitude was about 7 kV/cm for both NEFO waveforms. A single 14.4 kV/cm unipolar NEFO caused a 1.5-2 times greater increase in membrane conductance (p < 0.05) than bipolar NEFO, along with a longer and less frequent recovery. The lower efficiency of bipolar NEFO was preserved in Ca2+-free conditions and thus cannot be explained by the reversal of electrophoretic flows of Ca2+. Instead, the data indicate that the electric field polarity reversals reduced the pore yield. [ABSTRACT FROM AUTHOR] AB - Copyright of Scientific Reports is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROPORATION KW - RESEARCH KW - DIFFERENTIAL equations -- Oscillation theory KW - CYTOLOGICAL techniques KW - BIOELECTROCHEMISTRY KW - FIELD-effect transistors KW - BIPOLAR transistors N1 - Accession Number: 109412639; Gianulis, Elena C. 1 Lee, Jimo 2 Jiang, Chunqi Xiao, Shu Ibey, Bennet L. 3 Pakhomov, Andrei G. 1; Affiliation: 1: Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA 23508, USA 2: Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, VA 23508, USA 3: Bioeffects Division, 711th Human Performance Wing, Air Force Research Laboratory, Fort Sam Houston, San Antonio, TX 78234, USA; Source Info: 9/11/2015, p13818; Subject Term: ELECTROPORATION; Subject Term: RESEARCH; Subject Term: DIFFERENTIAL equations -- Oscillation theory; Subject Term: CYTOLOGICAL techniques; Subject Term: BIOELECTROCHEMISTRY; Subject Term: FIELD-effect transistors; Subject Term: BIPOLAR transistors; Number of Pages: 1p; Document Type: Article L3 - 10.1038/srep13818 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109412639&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Goff, Gary M. AU - Black, Jonathan T. AU - Beck, Joseph A. T1 - Tracking maneuvering spacecraft with filter-through approaches using interacting multiple models. JO - Acta Astronautica JF - Acta Astronautica Y1 - 2015/09// VL - 114 M3 - Article SP - 152 EP - 163 SN - 00945765 AB - When spacecraft maneuver unknowingly, traditional orbit determination filters diverge. This paper postulates using Interacting Multiple Models and covariance inflation methods to filter-through unknown maneuvers. This work proposes accurate methods for real-time tracking of a non-cooperative, maneuvering spacecraft and compares the performance to traditional techniques. Results show that a filter-through Interacting Multiple Model orbit determination filter can converge on a post-maneuver orbit in real-time with similar performance to off-line Initial Orbit Determination approaches. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Astronautica is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles KW - ORBIT determination KW - REAL-time control KW - ADAPTIVE estimation (Statistics) KW - SPACE situational awareness KW - Adaptive estimation KW - Orbit determination KW - Space situational awareness N1 - Accession Number: 103088487; Goff, Gary M. 1; Email Address: gary.goff@us.af.mil Black, Jonathan T. 1 Beck, Joseph A. 2; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433, United States 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, United States; Source Info: Sep2015, Vol. 114, p152; Subject Term: SPACE vehicles; Subject Term: ORBIT determination; Subject Term: REAL-time control; Subject Term: ADAPTIVE estimation (Statistics); Subject Term: SPACE situational awareness; Author-Supplied Keyword: Adaptive estimation; Author-Supplied Keyword: Orbit determination; Author-Supplied Keyword: Space situational awareness; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.actaastro.2015.05.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103088487&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mirau, Peter AU - Farmer, B. L. AU - Pandey, R. B. T1 - Structural variation of alpha-synuclein with temperature by a coarse-grained approach with knowledge-based interactions. JO - AIP Advances JF - AIP Advances Y1 - 2015/09// VL - 5 IS - 9 M3 - Article SP - 1 EP - 10 SN - 21583226 AB - Despite enormous efforts, our understanding the structure and dynamics of α-synuclein (ASN), a disordered protein (that plays a key role in neurodegenerative disease) is far from complete. In order to better understand sequence-structure-property relationships in α-SYNUCLEIN we have developed a coarse-grained model using knowledge-based residue-residue interactions and used it to study the structure of free ASN as a function of temperature (T) with a large-scale Monte Carlo simulation. Snapshots of the simulation and contour contact maps show changes in structure formation due to self-assembly as a function of temperature. Variations in the residue mobility profiles reveal clear distinction among three segments along the protein sequence. The N-terminal (1-60) and C-terminal (96-140) regions contain the least mobile residues, which are separated by the higher mobility non-amyloid component (NAC) (61-95). Our analysis of the intra-protein contact profile shows a higher frequency of residue aggregation (clumping) in the N-terminal region relative to that in the C-terminal region, with little or no aggregation in the NAC region. The radius of gyration (Rg) of ASN decays monotonically with decreasing the temperature, consistent with the finding of Allison et al. (JACS, 2009). Our analysis of the structure function provides an insight into the mass (N) distribution of ASN, and the dimensionality (D) of the structure as a function of temperature. We find that the globular structure with D ≈ 3 at low T, a random coil, D ≈ 2 at high T and in between (2 ≤ D ≤ 3) at the intermediate temperatures. The magnitudes of D are in agreement with experimental estimates (J. Biological Chem 2002). [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Advances is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYNUCLEINS KW - TEMPERATURE KW - TOXICOLOGICAL interactions N1 - Accession Number: 110105030; Mirau, Peter 1 Farmer, B. L. 1 Pandey, R. B. 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA 2: Department of Physics and Astronomy, University of Southern Mississippi, Hattiesburg, MS 39406, USA; Source Info: 2015, Vol. 5 Issue 9, p1; Subject Term: SYNUCLEINS; Subject Term: TEMPERATURE; Subject Term: TOXICOLOGICAL interactions; Number of Pages: 10p; Document Type: Article L3 - 10.1063/1.4927544 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110105030&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mitchel, W. C. AU - Elhamri, S. AU - Haugan, H. J. AU - Berney, R. AU - Shin Mou AU - Brown, G. J. T1 - Electrical properties of n-type GaSb substrates and p-type GaSb buffer layers for InAs/InGaSb superlattice infrared detectors. JO - AIP Advances JF - AIP Advances Y1 - 2015/09// VL - 5 IS - 9 M3 - Article SP - 1 EP - 8 SN - 21583226 AB - Lightly doped n-type GaSb substrates with p-type GaSb buffer layers are the preferred templates for growth of InAs/InGaSb superlattices used in infrared detector applications because of relatively high infrared transmission and a close lattice match to the superlattices. We report here temperature dependent resistivity and Hall effect measurements of bare substrates and substrate-p-type buffer layer structures grown by molecular beam epitaxy. Multicarrier analysis of the resistivity and Hall coefficient data demonstrate that high temperature transport in the substrates is due to conduction in both the high mobility zone center r band and the low mobility off-center L band. High overall mobility values indicate the absence of close compensation and that improved infrared and transport properties were achieved by a reduction in intrinsic acceptor concentration. Standard transport measurements of the undoped buffer layers show p-type conduction up to 300 K indicating electrical isolation of the buffer layer from the lightly n-type GaSb substrate. However, the highest temperature data indicate the early stages of the expected p to n type conversion which leads to apparent anomalously high carrier concentrations and lower than expected mobilities. Data at 77 K indicate very high quality buffer layers. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Advances is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BUFFER layers KW - SUPERLATTICES KW - INFRARED detectors N1 - Accession Number: 110105130; Mitchel, W. C. 1; Email Address: William.Mitchel.1@us.af.mil Elhamri, S. 2 Haugan, H. J. 1 Berney, R. 2 Shin Mou 1 Brown, G. J. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: University of Dayton, Department of Physics, Dayton, Ohio 45469, USA; Source Info: 2015, Vol. 5 Issue 9, p1; Subject Term: BUFFER layers; Subject Term: SUPERLATTICES; Subject Term: INFRARED detectors; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.4932208 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110105130&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pandey, R. B. AU - Farmer, B. L. AU - Gerstman, Bernard S. T1 - Self-assembly dynamics for the transition of a globular aggregate to a fibril network of lysozyme proteins via a coarse-grained Monte Carlo simulation. JO - AIP Advances JF - AIP Advances Y1 - 2015/09// VL - 5 IS - 9 M3 - Article SP - 1 EP - 12 SN - 21583226 AB - The self-organizing dynamics of lysozymes (an amyloid protein with 148 residues) with different numbers of protein chains, Nc = 1,5,10, and 15 (concentration 0.004 - 0.063) is studied by a coarse-grained Monte Carlo simulation with knowledge- based residue-residue interactions. The dynamics of an isolated lysozyme (Nc = 1) is ultra-slow (quasi-static) at low temperatures and becomes diffusive asymptotically on raising the temperature. In contrast, the presence of interacting proteins leads to concentration induced protein diffusion at low temperatures and concentration- tempering sub-diffusion at high temperatures. Variation of the radius of gyration of the protein with temperature shows a systematic transition from a globular structure (at low T) to a random coil (high T) conformation when the proteins are isolated. The crossover from globular to random coil becomes sharper upon increasing the protein concentration (i.e. with Nc = 5,10), with larger Rg at higher temperatures and concentration; Rg becomes smaller on adding more protein chains (e.g. Nc = 15) a non-monotonic response to protein concentration. Analysis of the structure factor (S(q)) provides an estimate of the effective dimension (D ≥ 3, globular conformation at low temperature, and D ~ 1.7, random coil, at high temperatures) of the isolated protein. With many interacting proteins, the morphology of the self-assembly varies with scale, i.e. at the low temperature (T = 0.015), D ~ 2.9 on the scale comparable to the radius of gyration of the protein, and D ~ 2.3 at the large scale over the entire sample. The global network of fibrils appears at high temperature (T = 0.021) with D ~ 1.7 (i.e. a random coil morphology at large scale) involving tenuous distribution of micro-globules (at small scales). [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Advances is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR self-assembly KW - LYSOZYMES KW - MONTE Carlo method N1 - Accession Number: 110105028; Pandey, R. B. 1 Farmer, B. L. 2,3 Gerstman, Bernard S. 4; Affiliation: 1: Department of Physics and Astronomy, University of Southern Mississippi, Hattiesburg, MS 39406, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA 3: Materials Science and Engineering, North Carolina State University, Raleigh, NC 27606, USA 4: Department of Physics, Florida International University, University Park, Miami, FL 33199, USA; Source Info: 2015, Vol. 5 Issue 9, p1; Subject Term: MOLECULAR self-assembly; Subject Term: LYSOZYMES; Subject Term: MONTE Carlo method; Number of Pages: 12p; Document Type: Article L3 - 10.1063/1.4921074 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110105028&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - DeWees, Brad R. T1 - The (Honest) Truth about Dishonesty: How We Lie to Everyone–Especially Ourselves. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2015/09//Sep/Oct2015 VL - 29 IS - 5 M3 - Book Review SP - 102 EP - 103 PB - Superintendent of Documents SN - 1555385X KW - HONESTY -- Social aspects KW - NONFICTION KW - ARIELY, Dan KW - (HONEST) Truth About Dishonesty: How We Lie to Everyone-Especially to Ourselves, The (Book) N1 - Accession Number: 109237610; DeWees, Brad R. 1; Affiliation: 1: US Air Force Academy Colorado Springs, Colorado; Source Info: Sep/Oct2015, Vol. 29 Issue 5, p102; Subject Term: HONESTY -- Social aspects; Subject Term: NONFICTION; Reviews & Products: (HONEST) Truth About Dishonesty: How We Lie to Everyone-Especially to Ourselves, The (Book); People: ARIELY, Dan; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109237610&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martindale, Michael J. T1 - On Limited Nuclear War in the 21st Century. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2015/09//Sep/Oct2015 VL - 29 IS - 5 M3 - Book Review SP - 106 EP - 107 PB - Superintendent of Documents SN - 1555385X KW - NUCLEAR warfare KW - NONFICTION KW - LARSEN, Jeffrey A. KW - KARTCHNER, Kerry M. KW - ON Limited Nuclear War in the 21st Century (Book) N1 - Accession Number: 109237613; Martindale, Michael J. 1; Affiliation: 1: US Air Force Academy; Source Info: Sep/Oct2015, Vol. 29 Issue 5, p106; Subject Term: NUCLEAR warfare; Subject Term: NONFICTION; Reviews & Products: ON Limited Nuclear War in the 21st Century (Book); People: LARSEN, Jeffrey A.; People: KARTCHNER, Kerry M.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109237613&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bressette, Kyle T1 - Billy Mitchell's War with the Navy: The Interwar Rivalry over Air Power. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2015/09//Sep/Oct2015 VL - 29 IS - 5 M3 - Book Review SP - 107 EP - 108 PB - Superintendent of Documents SN - 1555385X KW - AIR power (Military science) KW - NONFICTION KW - WILDENBERG, Thomas KW - BILLY Mitchell's War With the Navy: The Interwar Rivalry Over Air Power (Book) N1 - Accession Number: 109237614; Bressette, Kyle 1; Affiliation: 1: United States Air Force Weapons School Nellis AFB, Nevada; Source Info: Sep/Oct2015, Vol. 29 Issue 5, p107; Subject Term: AIR power (Military science); Subject Term: NONFICTION; Reviews & Products: BILLY Mitchell's War With the Navy: The Interwar Rivalry Over Air Power (Book); People: WILDENBERG, Thomas; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109237614&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - HOLLIFIELD, FRANK D. T1 - BOYS (AND GIRLS) GONE WILD: THE MISGUIDED DEVELOPMENT OF THE ROBUST LANGUAGE OR DEBATE DOCTRINE UNDER THE FEDERAL LABOR RELATIONS AUTHORITY. JO - Air Force Law Review JF - Air Force Law Review Y1 - 2015/09// VL - 74 M3 - Article SP - 1 EP - 46 PB - Superintendent of Documents SN - 00948381 AB - The article reports the decision of the U.S. Labor Relations Authority's (FLRA) decision in Department of the Air Force v. AFGE case. Topics discussed include FLRA's development of the robust language or debate doctrine in its jurisprudence; laws governing the federal sector unions to engage in threatening, harassing, and vulgar discussion; and robust language or debate doctrine under FLRA jurisprudence. KW - INDUSTRIAL relations KW - UNITED States -- Officials & employees -- Legal status, laws, etc. KW - DEBATES & debating KW - LABOR unions -- Law & legislation KW - UNITED States KW - LAW & legislation KW - MORAL & ethical aspects KW - UNITED States. National Labor Relations Board N1 - Accession Number: 113006054; HOLLIFIELD, FRANK D. 1,2,3,4,5,6; Affiliation: 1: Judge Advocate, United States Air Force (LL.M., Atlanta John Marshall Law School 2: LL.M., The Judge Advocate General Legal Center and School 3: J.D., The University of Alabama 4: M.P.A., The University of Alabama 5: B.A., The University of Alabama 6: Associate General Counsel, Defense Logistics Agency (DLA), Ft. Belvoir, Virginia.; Source Info: 2015, Vol. 74, p1; Subject Term: INDUSTRIAL relations; Subject Term: UNITED States -- Officials & employees -- Legal status, laws, etc.; Subject Term: DEBATES & debating; Subject Term: LABOR unions -- Law & legislation; Subject Term: UNITED States; Subject Term: LAW & legislation; Subject Term: MORAL & ethical aspects; Company/Entity: UNITED States. National Labor Relations Board; NAICS/Industry Codes: 813930 Labor Unions and Similar Labor Organizations; Number of Pages: 46p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113006054&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - FREY, ADAM E. T1 - SERVING TWO MASTERS: A SCHEME FOR ANALYZING RELIGIOUS ACCOMMODATION REQUESTS IN THE MILITARY. JO - Air Force Law Review JF - Air Force Law Review Y1 - 2015/09// VL - 74 M3 - Article SP - 47 EP - 112 PB - Superintendent of Documents SN - 00948381 AB - The article examines the confusion in military related to the First Amendment of the U.S. constitution particularly when the issue involves the religious practices of an individual in military. Topics discussed include Military Religious Freedom Foundation; the U.S. Department of Defense Instruction "Accommodation of Religious Practices Within the Military Services;" and enactment of Religious Freedom Restoration Act. KW - FREEDOM of religion KW - FIRST Amendment protections (United States Constitution) KW - CONSTITUTIONAL law -- United States KW - UNITED States KW - UNITED States. Dept. of Defense KW - RELIGIOUS Freedom Restoration Act of 1993 (U.S.) N1 - Accession Number: 113006055; FREY, ADAM E. 1; Affiliation: 1: Judge Advocate, United States Air Force; Source Info: 2015, Vol. 74, p47; Subject Term: FREEDOM of religion; Subject Term: FIRST Amendment protections (United States Constitution); Subject Term: CONSTITUTIONAL law -- United States; Subject Term: UNITED States; Company/Entity: UNITED States. Dept. of Defense; Reviews & Products: RELIGIOUS Freedom Restoration Act of 1993 (U.S.); Number of Pages: 66p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113006055&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - KING, ISRAEL D. T1 - PRESERVING THE ALLIANCE: THE NEED FOR A NEW COMMITMENT TO COMMON FUNDING IN NATO FINANCING. JO - Air Force Law Review JF - Air Force Law Review Y1 - 2015/09// VL - 74 M3 - Article SP - 113 EP - 132 PB - Superintendent of Documents SN - 00948381 AB - The article offers information on the establishment of a common funding for the North Atlantic Treaty Organization (NATO) allies to pay the operations and infrastructure costs of NATO's civilian and military institutions. It discusses the efforts of U.S. and its allies in NATO to deepen their level of political and military integration. It further examines the strengths and weaknesses of NATO's current common funding scheme. KW - FINANCE KW - INTERNATIONAL economic relations KW - INTERNATIONAL agencies KW - INTERNATIONAL cooperation KW - NORTH Atlantic Treaty Organization KW - UNITED States -- Foreign economic relations N1 - Accession Number: 113006056; KING, ISRAEL D. 1,2; Affiliation: 1: Judge Advocate, United States Air Force 2: Instructor, Operations and International Law, The Judge Advocate General's School, U.S. Air Force, Maxwell Air Force Base, Alabama; Source Info: 2015, Vol. 74, p113; Subject Term: FINANCE; Subject Term: INTERNATIONAL economic relations; Subject Term: INTERNATIONAL agencies; Subject Term: INTERNATIONAL cooperation; Subject Term: NORTH Atlantic Treaty Organization; Subject Term: UNITED States -- Foreign economic relations; NAICS/Industry Codes: 911410 Foreign affairs; NAICS/Industry Codes: 911420 International assistance; Number of Pages: 20p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113006056&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - JACKSON, AARON L. T1 - HUNTING DOWN TERRORISTS "WHEREVER THEY EXIST": ISIL IN SYRIA AND THE LEGAL ARGUMENT FOR UNITED STATES MILITARY OPERATIONS WITHIN THE TERRITORY OF A NON-CONSENTING NATION-STATE. JO - Air Force Law Review JF - Air Force Law Review Y1 - 2015/09// VL - 74 M3 - Article SP - 133 EP - 200 PB - Superintendent of Documents SN - 00948381 AB - The article examines the U.S. legal position regarding current military operations against Islamic State, as of September 2015. Topics discussed include history of extraterritorial military operations waged against non-State actors; legality of the U.S. operations in Syria; and the international efforts for waging military campaigns against ISIL. KW - HISTORY KW - INTERVENTION (International law) KW - SYRIA KW - ANTI-ISIL intervention, 2014- KW - SYRIA -- Foreign relations -- United States KW - CIVIL War, 2011- KW - ISLAMIC State (Organization) N1 - Accession Number: 113006057; JACKSON, AARON L. 1; Affiliation: 1: Judge Advocate, United States Air Force; Source Info: 2015, Vol. 74, p133; Subject Term: HISTORY; Subject Term: INTERVENTION (International law); Subject Term: SYRIA; Subject Term: ANTI-ISIL intervention, 2014-; Subject Term: SYRIA -- Foreign relations -- United States; Subject Term: CIVIL War, 2011-; Company/Entity: ISLAMIC State (Organization); Number of Pages: 68p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113006057&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Valladares, C. E. AU - Pedersen, T. AU - Sheehan, R. T1 - Polar cap patches observed during the magnetic storm of November 2003: observations and modeling. JO - Annales Geophysicae (09927689) JF - Annales Geophysicae (09927689) Y1 - 2015/09// VL - 33 IS - 9 M3 - Article SP - 1117 EP - 1133 SN - 09927689 AB - We present multi-instrumented measurements and multi-technique analysis of polar cap patches observed early during the recovery phase of the major magnetic storm of 20 November 2003 to investigate the origin of the polar cap patches. During this event, the Qaanaaq imager observed elongated polar cap patches, some of which containing variable brightness; the Qaanaaq digisonde detected abrupt NmF2 fluctuations; the Sondrestrom incoherent scatter radar (ISR) measured patches placed close to but poleward of the auroral oval-polar cap boundary; and the DMSPF13 satellite intersected topside density enhancements, corroborating the presence of the patches seen by the imager, the digisonde, and the Sondrestrom ISR. A 2-D cross-correlation analysis was applied to series of two consecutive red-line images, indicating that the magnitude and direction of the patch velocities were in good agreement with the SuperDARN convection patterns. We applied a back-tracing analysis to the patch locations and found that most of the patches seen between 20:41 and 21:29UT were likely transiting the throat region near 19:41 UT. Inspection of the SuperDARN velocities at this time indicates spatial and temporal collocation of a gap region between patches and large (1.7 km s-1) lineof- sight velocities. The variable airglow brightness of the patches observed between 20:33 and 20:43 UT was investigated using the numerical Global Theoretical Ionospheric Model (GTIM) driven by the SuperDARN convection patterns and a variable upward/downward neutral wind. Our numerical results indicate that variations in the airglow intensity up to 265 R can be produced by a constant 70ms-1 downward vertical wind. [ABSTRACT FROM AUTHOR] AB - Copyright of Annales Geophysicae (09927689) is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSPHERIC disturbances KW - IONOSPHERE KW - SPRITES (Atmospheric lightning) KW - GEOMAGNETISM KW - IONOSPHERIC electromagnetic wave propagation KW - Ionosphere (instruments and techniques) N1 - Accession Number: 110117788; Valladares, C. E. 1; Email Address: cesar.valladares@bc.edu Pedersen, T. 2 Sheehan, R. 1; Affiliation: 1: Institute for Scientific Research, Boston College, Chestnut Hill, Massachusetts, USA 2: Space Vehicle Directorate, Air Force Research Laboratory, Kirtland Air Force Base, New Mexico, USA; Source Info: 2015, Vol. 33 Issue 9, p1117; Subject Term: IONOSPHERIC disturbances; Subject Term: IONOSPHERE; Subject Term: SPRITES (Atmospheric lightning); Subject Term: GEOMAGNETISM; Subject Term: IONOSPHERIC electromagnetic wave propagation; Author-Supplied Keyword: Ionosphere (instruments and techniques); Number of Pages: 17p; Document Type: Article L3 - 10.5194/angeo-33-1117-2015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110117788&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ghrist, Michelle AU - Fornberg, Bengt AU - Reeger, Jonah T1 - Stability ordinates of Adams predictor-corrector methods. JO - BIT: Numerical Mathematics JF - BIT: Numerical Mathematics Y1 - 2015/09// VL - 55 IS - 3 M3 - Article SP - 733 EP - 750 SN - 00063835 AB - How far the stability domain of a numerical method for approximating solutions to differential equations extends along the imaginary axis indicates how useful the method is for approximating solutions to wave equations; this maximum extent is termed the imaginary stability boundary, also known as the stability ordinate. It has previously been shown that exactly half of Adams-Bashforth (AB), Adams-Moulton (AM), and staggered Adams-Bashforth methods have nonzero stability ordinates. In this paper, we consider two categories of Adams predictor-corrector methods and prove that they follow a similar pattern. In particular, if $$p$$ is the order of the method, AB $$p$$ -AM $$p$$ methods have nonzero stability ordinate only for $$p = 1, 2, \ 5, 6,\ 9, 10, \ldots $$ , and AB( $$p-$$ 1)-AM $$p$$ methods have nonzero stability ordinates only for $$p = 3, 4, \ 7, 8, \ 11, 12, \ldots $$ . [ABSTRACT FROM AUTHOR] AB - Copyright of BIT: Numerical Mathematics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STABILITY (Mechanics) KW - MATHEMATICAL models KW - DIFFERENTIAL equations KW - STABILITY constants KW - 65L06 KW - 65L12 KW - 65L20 KW - 65M06 KW - 65M12 KW - Adams methods KW - Finite difference methods KW - Imaginary stability boundary KW - Linear multistep methods KW - Predictor-corrector KW - Stability ordinate KW - Stability region N1 - Accession Number: 109967312; Ghrist, Michelle 1; Email Address: michelle.ghrist@usafa.edu Fornberg, Bengt 2; Email Address: fornberg@colorado.edu Reeger, Jonah 3; Email Address: jonah.reeger@afit.edu; Affiliation: 1: Department of Mathematical Sciences, United States Air Force Academy, 2354 Fairchild, Suite 6D2 USAF Academy 80840 USA 2: Department of Applied Mathematics, University of Colorado, Boulder 80309 USA 3: Department of Mathematics and Statistics, Air Force Institute of Technology, 2950 Hobson Way WPAFB 45433 USA; Source Info: Sep2015, Vol. 55 Issue 3, p733; Subject Term: STABILITY (Mechanics); Subject Term: MATHEMATICAL models; Subject Term: DIFFERENTIAL equations; Subject Term: STABILITY constants; Author-Supplied Keyword: 65L06; Author-Supplied Keyword: 65L12; Author-Supplied Keyword: 65L20; Author-Supplied Keyword: 65M06; Author-Supplied Keyword: 65M12; Author-Supplied Keyword: Adams methods; Author-Supplied Keyword: Finite difference methods; Author-Supplied Keyword: Imaginary stability boundary; Author-Supplied Keyword: Linear multistep methods; Author-Supplied Keyword: Predictor-corrector; Author-Supplied Keyword: Stability ordinate; Author-Supplied Keyword: Stability region; Number of Pages: 18p; Document Type: Article L3 - 10.1007/s10543-014-0528-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109967312&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O.N. AU - Miller, J.D. AU - Miracle, D.B. AU - Woodward, C. T1 - Accelerated exploration of multi-principal element alloys for structural applications. JO - CALPHAD JF - CALPHAD Y1 - 2015/09// VL - 50 M3 - Article SP - 32 EP - 48 SN - 03645916 AB - A strategy for accelerated discovery and exploration of multi-principal element alloys was developed and used to identify new alloys within a design window of desired microstructures and properties. As an example, the strategy was applied to analyze thousands of 3- 4-, 5- and 6-component alloys at equiatomic compositions of the alloying elements. Currently available thermodynamic databases were used to assess equilibrium phase diagrams for these alloys. The validity and reliability of the calculated phase diagrams were estimated based on the extent of experimental binary and ternary data used to build the respective thermodynamic databases. Alloys with specific characteristics, such as single-phase solid solution alloys with the use temperature above 1000 °C, were identified using an automated analysis of the calculated phase diagrams. The density, elastic moduli and costs of these alloys were estimated using the rule of mixtures of pure elements and were used as additional criteria for alloy selection. This approach allowed rapid, albeit preliminary, screening of many thousands of alloys and identification of promising candidate compositions, some of which are reported in this paper, for more time intensive experimental validations and assessments. [ABSTRACT FROM AUTHOR] AB - Copyright of CALPHAD is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACCELERATION (Mechanics) KW - THERMODYNAMICS KW - MICROSTRUCTURE KW - PHASE diagrams KW - SOLID solutions KW - Alloy design KW - Calphad KW - High entropy alloys KW - Multi-principal element alloys KW - Structural metals N1 - Accession Number: 108456259; Senkov, O.N. 1 Miller, J.D. 1 Miracle, D.B. 1 Woodward, C. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Sep2015, Vol. 50, p32; Subject Term: ACCELERATION (Mechanics); Subject Term: THERMODYNAMICS; Subject Term: MICROSTRUCTURE; Subject Term: PHASE diagrams; Subject Term: SOLID solutions; Author-Supplied Keyword: Alloy design; Author-Supplied Keyword: Calphad; Author-Supplied Keyword: High entropy alloys; Author-Supplied Keyword: Multi-principal element alloys; Author-Supplied Keyword: Structural metals; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.calphad.2015.04.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108456259&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bogdanor, Michael AU - Oskay, Caglar AU - Clay, Stephen T1 - Multiscale modeling of failure in composites under model parameter uncertainty. JO - Computational Mechanics JF - Computational Mechanics Y1 - 2015/09// VL - 56 IS - 3 M3 - Article SP - 389 EP - 404 PB - Springer Science & Business Media B.V. SN - 01787675 AB - This manuscript presents a multiscale stochastic failure modeling approach for fiber reinforced composites. A homogenization based reduced-order multiscale computational model is employed to predict the progressive damage accumulation and failure in the composite. Uncertainty in the composite response is modeled at the scale of the microstructure by considering the constituent material (i.e., matrix and fiber) parameters governing the evolution of damage as random variables. Through the use of the multiscale model, randomness at the constituent scale is propagated to the scale of the composite laminate. The probability distributions of the underlying material parameters are calibrated from unidirectional composite experiments using a Bayesian statistical approach. The calibrated multiscale model is exercised to predict the ultimate tensile strength of quasi-isotropic open-hole composite specimens at various loading rates. The effect of random spatial distribution of constituent material properties on the composite response is investigated. [ABSTRACT FROM AUTHOR] AB - Copyright of Computational Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIBROUS composites KW - FAILURE mode & effects analysis KW - PARAMETER estimation KW - UNCERTAINTY KW - BAYESIAN analysis KW - Fiber reinforced composites KW - Multiscale models KW - Random material properties KW - Spatial variability KW - Stochastic failure prediction N1 - Accession Number: 108790675; Bogdanor, Michael 1 Oskay, Caglar 1; Email Address: caglar.oskay@vanderbilt.edu Clay, Stephen 2; Affiliation: 1: Department of Civil and Environmental Engineering, Vanderbilt University, VU Station B#351831, 2301 Vanderbilt Place Nashville 37235 USA 2: Aerospace Systems Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base 45433 USA; Source Info: Sep2015, Vol. 56 Issue 3, p389; Subject Term: FIBROUS composites; Subject Term: FAILURE mode & effects analysis; Subject Term: PARAMETER estimation; Subject Term: UNCERTAINTY; Subject Term: BAYESIAN analysis; Author-Supplied Keyword: Fiber reinforced composites; Author-Supplied Keyword: Multiscale models; Author-Supplied Keyword: Random material properties; Author-Supplied Keyword: Spatial variability; Author-Supplied Keyword: Stochastic failure prediction; Number of Pages: 16p; Document Type: Article L3 - 10.1007/s00466-015-1177-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108790675&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Claus, B. AU - Nie, X. AU - Martin, B. AU - Chen, W. T1 - A Side-Impact Torsion Kolsky Bar. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2015/09// VL - 55 IS - 7 M3 - Article SP - 1367 EP - 1374 SN - 00144851 AB - A novel variant of the torsion Kolsky bar which utilizes a side-impact mechanism to achieve a more tractable torsional pulse-shaping technique has been developed. Integration of components from the well-established compression Kolsky bar experimental technique with the torsion Kolsky bar method allows conventional compression techniques to be applied to a torsion experiment. Typical considerations involving striker length, striker velocity, and pulse-shaper geometry, which are used to generate a desired waveform in a compression bar, can be directly applied to the side-impact torsion technique to control pulse length, rotational velocity, and waveform profile. The results from experiments show that the apparatus successfully generates torsional waveforms using conventional pulse shaping techniques. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMPACT (Mechanics) KW - TORSION KW - STRAINS & stresses (Mechanics) KW - FRICTION KW - COMPRESSION loads KW - ROTATIONAL motion KW - WAVE analysis KW - Friction KW - Kolsky Bar KW - Pulse Shaping KW - Side Impact KW - Split Hopkinson Pressure Bar KW - Torsion N1 - Accession Number: 108720317; Claus, B. 1; Email Address: benclaus@purdue.edu Nie, X. 2; Email Address: Xu.Nie@unt.edu Martin, B. 3; Email Address: bradley.martin.11@us.af.mil Chen, W. 1; Email Address: wchen@purdue.edu; Affiliation: 1: Purdue University, 701 W. Stadium Ave West Lafayette 47906 USA 2: University of North Texas, 1155 Union Circle Denton 311098 USA 3: U.S. Air Force Research Laboratory, 101 W. Eglin Blvd. Eglin AFB 32542 USA; Source Info: Sep2015, Vol. 55 Issue 7, p1367; Subject Term: IMPACT (Mechanics); Subject Term: TORSION; Subject Term: STRAINS & stresses (Mechanics); Subject Term: FRICTION; Subject Term: COMPRESSION loads; Subject Term: ROTATIONAL motion; Subject Term: WAVE analysis; Author-Supplied Keyword: Friction; Author-Supplied Keyword: Kolsky Bar; Author-Supplied Keyword: Pulse Shaping; Author-Supplied Keyword: Side Impact; Author-Supplied Keyword: Split Hopkinson Pressure Bar; Author-Supplied Keyword: Torsion; Number of Pages: 8p; Document Type: Article L3 - 10.1007/s11340-015-0032-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108720317&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Scott-Emuakpor, O. AU - Schwartz, J. AU - George, T. AU - Holycross, C. AU - Cross, C. AU - Slater, J. T1 - Bending fatigue life characterisation of direct metal laser sintering nickel alloy 718. JO - Fatigue & Fracture of Engineering Materials & Structures JF - Fatigue & Fracture of Engineering Materials & Structures Y1 - 2015/09// VL - 38 IS - 9 M3 - Article SP - 1105 EP - 1117 PB - Wiley-Blackwell SN - 8756758X AB - Bending fatigue behaviour of direct metal laser sintering (DMLS), Nickel (Ni) Alloy 718 has been assessed as preliminary qualification to additively manufacture advanced gas turbine engine components. Motivation for this work comes from the possibility of using DMLS to improve functionality of hot-section components. By using DMLS, turbine blades and heat exchangers cooling passages can be enhanced, leading to improved engine performance. This study focuses on vibratory high cycle fatigue (HCF) assessment of DMLS Ni Alloy 718 from two suppliers. Specimens were fatigued via vibration-based bending and compared with published rotating bending cold-rolled Ni Alloy 718. Tensile analysis and microscopy were also conducted to understand fatigue and fracture trends. HCF, tensile properties and microscopy comparisons show that fatigue and strength of DMLS Ni may be sensitive to post-fusion treatments. Nonetheless, fatigue performance of DMLS Ni compares well with rotating bending fatigue of cold-rolled Ni. [ABSTRACT FROM AUTHOR] AB - Copyright of Fatigue & Fracture of Engineering Materials & Structures is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL alloys KW - RESEARCH KW - MATERIALS -- Fatigue KW - LASER sintering KW - BENDING (Metalwork) KW - VIBRATION (Mechanics) -- Research KW - bending fatigue KW - nickel base superalloy KW - statistical model strength KW - vibration N1 - Accession Number: 108742361; Scott-Emuakpor, O. 1 Schwartz, J. 1 George, T. 1 Holycross, C. 1 Cross, C. 1 Slater, J. 2; Affiliation: 1: Air Force Research Laboratory, Aerospace Systems Directorate 2: Wright State University Department of Mechanical and Materials Engineering,; Source Info: Sep2015, Vol. 38 Issue 9, p1105; Subject Term: NICKEL alloys; Subject Term: RESEARCH; Subject Term: MATERIALS -- Fatigue; Subject Term: LASER sintering; Subject Term: BENDING (Metalwork); Subject Term: VIBRATION (Mechanics) -- Research; Author-Supplied Keyword: bending fatigue; Author-Supplied Keyword: nickel base superalloy; Author-Supplied Keyword: statistical model strength; Author-Supplied Keyword: vibration; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 12p; Illustrations: 2 Color Photographs, 1 Black and White Photograph, 7 Diagrams, 3 Charts, 6 Graphs; Document Type: Article L3 - 10.1111/ffe.12286 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108742361&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 109645158 T1 - Effects of Stereoscopic Depth on Vigilance Performance and Cerebral Hemodynamics. AU - Greenlee, Eric T AU - Funke, Gregory J AU - Warm, Joel S AU - Finomore Jr, Victor S AU - Patterson, Robert E AU - Barnes, Laura E AU - Funke, Matthew E AU - Vidulich, Michael A AU - Finomore, Victor S Jr Y1 - 2015/09// N1 - Accession Number: 109645158. Language: English. Entry Date: 20150923. Revision Date: 20160831. Publication Type: journal article. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. NLM UID: 0374660. SP - 1063 EP - 1075 JO - Human Factors JF - Human Factors JA - HUM FACTORS VL - 57 IS - 6 PB - Sage Publications Inc. AB - Objective: We tested the possibility that monitoring a display wherein critical signals for detection were defined by a stereoscopic three-dimensional (3-D) image might be more resistant to the vigilance decrement, and to temporal declines in cerebral blood flow velocity (CBFV), than monitoring a display featuring a customary two-dimensional (2-D) image.Background: Hancock has asserted that vigilance studies typically employ stimuli for detection that do not exemplify those that occur in the natural world. As a result, human performance is suboptimal. From this perspective, tasks that better approximate perception in natural environments should enhance performance efficiency. To test that possibility, we made use of stereopsis, an important means by which observers interact with their everyday surroundings.Method: Observers monitored a circular display in which a vertical line was embedded. Critical signals for detection in a 2-D condition were instances in which the line was rotated clockwise from vertical. In a 3-D condition, critical signals were cases in which the line appeared to move outward toward the observer.Results: The overall level of signal detection and the stability of detection over time were greater when observers monitored for 3-D changes in target depth compared to 2-D changes in target orientation. However, the 3-D display did not retard the temporal decline in CBFV.Conclusion: These results provide the initial demonstration that 3-D displays can enhance performance in vigilance tasks.Application: The use of 3-D displays may be productive in augmenting system reliability when operator vigilance is vital. SN - 0018-7208 AD - Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio U2 - PMID: 25850115. DO - 10.1177/0018720815572468 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109645158&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Barton, David A. AU - Beecken, Brian P. AU - Hoglund, Robert M. T1 - Determination of Energy and Charge Deposition Profiles in Elemental Slabs From an Isotropically Equivalent Electron Source Using Monte Carlo Simulations. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2015/09//Sep2015 Part 1 VL - 43 IS - 9, Part 1 M3 - Article SP - 2861 EP - 2868 SN - 00933813 AB - Monte Carlo simulations using the MCNP5 transport code have been made for electrons with 10.0 keV to 5.0 MeV kinetic energies incident on thick slabs of elemental materials with atomic numbers in the range 6–79. An electron point source near the surface of the target slab was used to simulate isotropic incidence, allowing for the inclusion of backscatter and secondary-electron emissions in the simulation. Thus, the results should be uniquely useful for the modeling of deep-dielectric charging in spacecraft over a large range of energies and materials. Due to the minimum electron energy cutoff of MCNP5, accuracy of the simulations decreases at the lowest incident energies. A path has been identified for developing an algorithm that can quickly reproduce and interpolate between the Monte Carlo results for both incident energies and target materials in the ranges studied. Such an algorithm should prove useful to modelers of deep-dielectric charging in realistic spacecraft environments. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONTE Carlo method KW - RESEARCH KW - ELECTRONS -- Research KW - KINETIC energy KW - ELECTRON emission KW - SPACE vehicles KW - Aircraft manufacture KW - Backscatter KW - Charge deposition KW - Data models KW - Dielectrics KW - energy deposition KW - Interpolation KW - isotropic electron incidence KW - Monte Carlo methods KW - Monte Carlo simulations KW - Slabs N1 - Accession Number: 109361986; Barton, David A. 1 Beecken, Brian P. 2 Hoglund, Robert M. 2; Affiliation: 1: Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, NM, USA 2: Department of Physics, Bethel University, St. Paul, MN, USA; Source Info: Sep2015 Part 1, Vol. 43 Issue 9, Part 1, p2861; Subject Term: MONTE Carlo method; Subject Term: RESEARCH; Subject Term: ELECTRONS -- Research; Subject Term: KINETIC energy; Subject Term: ELECTRON emission; Subject Term: SPACE vehicles; Author-Supplied Keyword: Aircraft manufacture; Author-Supplied Keyword: Backscatter; Author-Supplied Keyword: Charge deposition; Author-Supplied Keyword: Data models; Author-Supplied Keyword: Dielectrics; Author-Supplied Keyword: energy deposition; Author-Supplied Keyword: Interpolation; Author-Supplied Keyword: isotropic electron incidence; Author-Supplied Keyword: Monte Carlo methods; Author-Supplied Keyword: Monte Carlo simulations; Author-Supplied Keyword: Slabs; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TPS.2015.2461543 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109361986&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hoffmann, Ryan AU - Ferguson, Dale AU - Patton, James AU - Wheelock, Adrian T. AU - Young, Jason A. AU - Crofton, Mark W. AU - Prebola, John L. AU - Crider, Dustin H. AU - Likar, Justin J. AU - Schneider, Todd A. AU - Vaughn, Jason A. AU - Bodeau, J. Michale AU - Noushkam, Nikki AU - Vayner, Boris V. AU - Hoang, Bao T1 - AFRL Round-Robin Test Results on Plasma Propagation Velocity. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2015/09//Sep2015 Part 1 VL - 43 IS - 9, Part 1 M3 - Article SP - 3006 EP - 3013 SN - 00933813 AB - The speed plasma propagates across a charged solar panel after a primary arc is one of the most important, yet poorly known, quantities in determining Electrostatic Discharge (ESD) currents for spacecraft arcing events. A review of the literature over the last two decades reveals that measured propagation velocity varies by as much as an order of magnitude. To overcome this deficiency, a round-robin set of tests was initiated with partners from industry, academia, NASA and the U.S. Air Force. This paper will provide the most recent results from the Air Force Research Laboratory testing conducted at the Spacecraft Charging and Instrument Calibration Laboratory. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRIC devices KW - RESEARCH KW - ELECTROSTATIC discharges KW - CIRCUIT-breaking arcs KW - SPACE vehicles -- Electrostatic charging KW - FLASHOVER KW - Arrays KW - Current measurement KW - Dielectric KW - Dielectrics KW - discharge KW - Electric potential KW - flashover KW - Plasma measurements KW - Plasmas KW - Space vehicles KW - spacecraft charging N1 - Accession Number: 109361996; Hoffmann, Ryan 1 Ferguson, Dale 1 Patton, James 1 Wheelock, Adrian T. 1 Young, Jason A. 2 Crofton, Mark W. 2 Prebola, John L. 3 Crider, Dustin H. 3 Likar, Justin J. 4 Schneider, Todd A. 5 Vaughn, Jason A. 5 Bodeau, J. Michale 6 Noushkam, Nikki 7 Vayner, Boris V. 8 Hoang, Bao 9; Affiliation: 1: Spacecraft Charging and Instrument Calibration Laboratory, Air Force Research Laboratory, Albuquerque, NM, USA 2: , The Aerospace Corporation, Los Angeles, CA, USA 3: , Aerospace Testing Alliance, Arnold AFB, TN, USA 4: , UTC Aerospace Systems, Charlotte, NC, USA 5: , NASA Marshal Space Flight Center, Huntsville, AL, USA 6: , Northrop Grumman, McLean, VA, USA 7: , Orbital Sciences, Chandler, AZ, USA 8: , Ohio Aerospace Institute, Cleveland, OH, USA 9: , Space Systems Loral, Palo Alto, CA, USA; Source Info: Sep2015 Part 1, Vol. 43 Issue 9, Part 1, p3006; Subject Term: DIELECTRIC devices; Subject Term: RESEARCH; Subject Term: ELECTROSTATIC discharges; Subject Term: CIRCUIT-breaking arcs; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: FLASHOVER; Author-Supplied Keyword: Arrays; Author-Supplied Keyword: Current measurement; Author-Supplied Keyword: Dielectric; Author-Supplied Keyword: Dielectrics; Author-Supplied Keyword: discharge; Author-Supplied Keyword: Electric potential; Author-Supplied Keyword: flashover; Author-Supplied Keyword: Plasma measurements; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Space vehicles; Author-Supplied Keyword: spacecraft charging; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TPS.2015.2465865 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109361996&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ferguson, Dale C. AU - Katz, Ira T1 - The Worst Case GEO Environment and the Frequency of Arcs in GEO. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2015/09//Sep2015 Part 1 VL - 43 IS - 9, Part 1 M3 - Article SP - 3021 EP - 3026 SN - 00933813 AB - Proper spacecraft design and testing depend on a knowledge of the worst case environment and the number of arcs to be endured during the spacecraft lifetime. In this paper, we define the criteria to be used to specify the worst case geosynchronous earth orbit (GEO) charging environment (plasma density and temperature), including the physical constraints on particle and magnetic field energy densities and the relative importance of frame charging and differential charging. A previous estimate of the frequency of arcing (found in the literature and incorporated into an International Standards Organization standard) and the consequent total number of arcs to be encountered in a GEO satellite lifetime are found to be incorrect because they were based on environmental measurements using a faulty algorithm to determine spacecraft charging and plasma density. Using more accurate estimates of the frequency of GEO plasma densities and temperatures, we arrive at a much lower estimate of the total number of arcs during a GEO satellite lifetime. Finally, the worst case GEO charging environment seen to date is determined from Nascap-2k simulations. Our estimates of worst case charging environments and arc frequencies may be more confidently used by GEO spacecraft designers and test engineers. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GEOSYNCHRONOUS orbits KW - RESEARCH KW - SPACE vehicles -- Electrostatic charging KW - EARTH (Planet) KW - GEOSTATIONARY satellites KW - PLASMA astrophysics KW - ORBIT KW - GEO KW - Kinetic energy KW - Magnetosphere KW - Plasma measurements KW - Plasma temperature KW - plasmas KW - Satellites KW - Space vehicles KW - spacecraft charging KW - worst cases N1 - Accession Number: 109361969; Ferguson, Dale C. 1 Katz, Ira 2; Affiliation: 1: , Air Force Research Laboratory, Albuquerque, USA 2: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA; Source Info: Sep2015 Part 1, Vol. 43 Issue 9, Part 1, p3021; Subject Term: GEOSYNCHRONOUS orbits; Subject Term: RESEARCH; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: EARTH (Planet); Subject Term: GEOSTATIONARY satellites; Subject Term: PLASMA astrophysics; Subject Term: ORBIT; Author-Supplied Keyword: GEO; Author-Supplied Keyword: Kinetic energy; Author-Supplied Keyword: Magnetosphere; Author-Supplied Keyword: Plasma measurements; Author-Supplied Keyword: Plasma temperature; Author-Supplied Keyword: plasmas; Author-Supplied Keyword: Satellites; Author-Supplied Keyword: Space vehicles; Author-Supplied Keyword: spacecraft charging; Author-Supplied Keyword: worst cases; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TPS.2015.2432718 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109361969&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ferguson, Dale C. AU - Worden, Simon Peter AU - Hastings, Daniel E. T1 - The Space Weather Threat to Situational Awareness, Communications, and Positioning Systems. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2015/09//Sep2015 Part 1 Y1 - 2015/09//Sep2015 Part 1 VL - 43 IS - 9, Part 1 M3 - Article SP - 3086 EP - 3098 SN - 00933813 AB - A recent space weather headline has cast doubt in the minds of some as to whether space weather is the source of spacecraft anomalies, and thus, whether it is important in the design and operation of critical situational awareness, communications, and positioning systems. In this paper, we reiterate the evidence for the importance of space weather, its role in producing spacecraft and ground anomalies, and the threat it poses to critical systems. In addition, we report new studies broken down by anomaly types and suggest the sources of the anomalies (surface charging or interior charging). Finally, we suggest spacecraft charging and ground effects mitigation strategies for design and operations of systems critical to our modern civilization. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASTRONAUTICAL communication systems KW - SITUATIONAL awareness -- Research KW - SPACE environment -- Research KW - TELECOMMUNICATION systems -- Research KW - ARTIFICIAL satellites -- Accidents N1 - Accession Number: 109361960; Source Information: Sep2015 Part 1, Vol. 43 Issue 9, Part 1, p3086; Subject Term: ASTRONAUTICAL communication systems; Subject Term: SITUATIONAL awareness -- Research; Subject Term: SPACE environment -- Research; Subject Term: TELECOMMUNICATION systems -- Research; Subject Term: ARTIFICIAL satellites -- Accidents; Subject Term: ; Number of Pages: 13p; ; Document Type: Article; L3 - 10.1109/TPS.2015.2412775 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=109361960&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Mancuso, Vincent AU - Buxa, Peter AU - Chi-Hao Cheng AU - David Lin AU - Lihyeh Liou AU - Longbrake, Matthew AU - Pemberton, Thomas T1 - Real-time imbalance compensator for wideband receiver applications. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2015/09// VL - 9 IS - 7 M3 - Article SP - 743 EP - 750 PB - Institution of Engineering & Technology SN - 17518784 AB - To increase the bandwidth of a wideband receiver for surveillance applications, an in-phase/quadrature-phase (I/Q) channel-based receiver is a potential approach. However, the image caused by an imperfect coupler prevents the I/Q channel-based receiver from becoming a reality. Air Force Research Laboratory developed an imbalance compensation method covering two Nyquist zones. In this study, the authors present its implementation with a fieldprogrammable gate array board. Experimental results demonstrate the effectiveness of the proposed imbalance compensation algorithm and its feasibility. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BROADBAND communication systems KW - ELECTRONIC surveillance KW - QUADRATURE amplitude modulation KW - MATHEMATICAL programming KW - AIR Force Research Laboratory (Edwards Air Force Base, Calif.) N1 - Accession Number: 115909716; Mancuso, Vincent 1 Buxa, Peter 2 Chi-Hao Cheng 3; Email Address: chengc@miamioh.edu David Lin 2 Lihyeh Liou 2 Longbrake, Matthew 2 Pemberton, Thomas 2; Affiliation: 1: Northrop Grumman Electronics Systems, Baltimore, Maryland, USA 2: US Air Force Research Laboratory, Sensor Directorate, Dayton, OH, USA 3: Electrical and Computer Engineering, Miami University, Oxford, Ohio, USA; Source Info: 2015, Vol. 9 Issue 7, p743; Subject Term: BROADBAND communication systems; Subject Term: ELECTRONIC surveillance; Subject Term: QUADRATURE amplitude modulation; Subject Term: MATHEMATICAL programming; Company/Entity: AIR Force Research Laboratory (Edwards Air Force Base, Calif.); NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; Number of Pages: 8p; Document Type: Article L3 - 10.1049/iet-rsn.2014.0347 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115909716&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harshman, Sean W. AU - Dershem, Victoria L. AU - Fan, Maomian AU - Watts, Brandy S. AU - Slusher, Grant M. AU - Flory, Laura E. AU - Grigsby, Claude C. AU - Ott, Darrin K. T1 - The stability of Tenax TA thermal desorption tubes in simulated field conditions on the HAPSITE ER. JO - International Journal of Environmental Analytical Chemistry JF - International Journal of Environmental Analytical Chemistry Y1 - 2015/09// VL - 95 IS - 11 M3 - Article SP - 1014 EP - 1029 SN - 03067319 AB - Due to the growing need to monitor aircraft cabin, cockpit and breathing-line air quality, functional assessment of sampling equipment for the specialised field conditions of flight need to be established for both in-flight and ground safety. In this article, we assess the reliability of Tenax TA thermal desorption tubes to perform under various relevant field sampling conditions, such as storage temperature, loading temperature, vibrational velocity, gravitational force (G Force) and altitude pressure with semi-real-time gas chromatograph-mass spectrometer (GC-MS) analysis on the field portable HAPSITE®ER (Hazardous Air Pollutants on Site Extended Range) instrument. First, we show that Tenax TA thermal desorption tubes can handle storage under extreme environmental conditions, 4–77°C, over numerous analytical test cycles. Next, we confirm that extreme loading temperature, both hot (77°C) and cold (4°C), does not affect the analytical reliability of Tenax TA thermal desorption tubes. Then, we illustrate that G Force may have a significant (p ≤ 0.0364) effect on Tenax TA performance while vibrational velocity (p ≤ 0.7265) and low ambient air pressure (p ≤ 0.1753), such as that found at high altitude, do not. Finally, several Tenax TA thermal desorption tubes were flight-tested, demonstrating that the durability of these tubes maybe insufficient for use on military cargo aircraft (p = 0.0107). The results presented here provide a rationale for additional testing of Tenax TA thermal desorption tubes for flight suitability. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Environmental Analytical Chemistry is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Air quality KW - Thermal desorption KW - Gas chromatography/Mass spectrometry (GC-MS) KW - Aircraft cabins KW - Transport planes KW - Porous polymers KW - Gravitation KW - air quality KW - flight KW - HAPSITE® ER KW - Tenax TA KW - thermal desorption N1 - Accession Number: 109463779; Harshman, Sean W. 1; Dershem, Victoria L. 2; Fan, Maomian 3; Watts, Brandy S. 3; Slusher, Grant M. 1; Flory, Laura E. 1; Grigsby, Claude C. 3; Ott, Darrin K. 2; Affiliations: 1: UES Inc., Air Force Research Laboratory, Wright-Patterson AFB, OH45433, USA; 2: The Henry M. Jackson Foundation for the Advancement of Military Medicine, Air Force Research Laboratory, Wright-Patterson AFB, OH45433, USA; 3: Air Force Research Laboratory, Wright-Patterson AFB, OH45433, USA; Issue Info: Sep2015, Vol. 95 Issue 11, p1014; Thesaurus Term: Air quality; Thesaurus Term: Thermal desorption; Thesaurus Term: Gas chromatography/Mass spectrometry (GC-MS); Subject Term: Aircraft cabins; Subject Term: Transport planes; Subject Term: Porous polymers; Subject Term: Gravitation; Author-Supplied Keyword: air quality; Author-Supplied Keyword: flight; Author-Supplied Keyword: HAPSITE® ER; Author-Supplied Keyword: Tenax TA; Author-Supplied Keyword: thermal desorption; NAICS/Industry Codes: 481112 Scheduled Freight Air Transportation; Number of Pages: 16p; Document Type: Article L3 - 10.1080/03067319.2015.1077520 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=109463779&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hu, Xin AU - Wan, Hui AU - Patnaik, Soumya S. T1 - Numerical modeling of heat transfer in open-cell micro-foam with phase change material. JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2015/09// VL - 88 M3 - Article SP - 617 EP - 626 SN - 00179310 AB - The heat transfer behavior of micro-foam impregnated with phase change material (PCM) was investigated. Both microscopic and macroscopic modeling approaches were considered. An open-cell PCM/micro-foam structure under constant heat flux was modeled using an ideal micro-foam structure based on a cubic unit cell with spherical micro-pores arranged in a BCC lattice. Results from direct numerical simulations (DNS) which take into account the intricate foam geometry were compared with those from one- and two-temperature volume-averaged simulations. The enthalpy-porosity method was used for phase change and conjugated heat transfer was applied at the PCM/micro-foam interface. The DNS simulations provided insight into the complicated heat transfer and a three-dimensional PCM melting front and temperature distribution was observed. Along with serving as a benchmark for the less computationally expensive volume average methods, the DNS results were also used to extract thermo-physical parameters such as effective thermal conductivity and interstitial heat transfer coefficients. These coefficients were subsequently used in the volume averaged simulations. The choice of the effective thermal conductivity of the PCM/micro-foam structure was found to be crucial in matching the temperature profile and liquid PCM volume fraction results from volume averaged simulations and DNS. Effective thermal conductivity values based on the nonlinear Progelhoff model with power factor derived from DNS were found to provide an improvement over the more widely used value based on the arithmetic mean. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT transfer KW - FOAM KW - PHASE change materials KW - MATHEMATICAL models KW - MICROSCOPY KW - CRYSTAL structure KW - COMPUTER simulation KW - Direct numerical simulations KW - Micro-foam structure KW - Phase change material KW - Volume-averaged simulations N1 - Accession Number: 103023599; Hu, Xin 1,2 Wan, Hui 1,2 Patnaik, Soumya S. 2; Email Address: soumya.patnaik.1@us.af.mil; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432-1894, USA 2: Mechanical and Thermal Systems Branch, Power and Control Division, Aerospace Systems Directorate, Air Force Research Laboratory, WPAFB, OH 45433, USA; Source Info: Sep2015, Vol. 88, p617; Subject Term: HEAT transfer; Subject Term: FOAM; Subject Term: PHASE change materials; Subject Term: MATHEMATICAL models; Subject Term: MICROSCOPY; Subject Term: CRYSTAL structure; Subject Term: COMPUTER simulation; Author-Supplied Keyword: Direct numerical simulations; Author-Supplied Keyword: Micro-foam structure; Author-Supplied Keyword: Phase change material; Author-Supplied Keyword: Volume-averaged simulations; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2015.04.044 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103023599&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Musinski, William D. AU - McDowell, David L. T1 - On the eigenstrain application of shot-peened residual stresses within a crystal plasticity framework: Application to Ni-base superalloy specimens. JO - International Journal of Mechanical Sciences JF - International Journal of Mechanical Sciences Y1 - 2015/09// VL - 100 M3 - Article SP - 195 EP - 208 SN - 00207403 AB - Shot-peening-induced compressive residual stresses are often introduced in Ni-base superalloy components to help prevent or retard surface fatigue crack initiation and early growth at near surface inclusions. In certain cases these compressive residual stresses can shift the fatigue crack initiation site from surface to sub-surface locations. However, the ability to computationally predict the improvement in fatigue life response and scatter due to induced compressive residual stresses are lightly treated in the literature. To address this issue, a method to incorporate shot-peened residual stresses within a 3D polycrystalline microstructure is introduced in this work. These residual stresses are induced by a distribution of fictitious or quasi-thermal expansion eigenstrain as a function of depth from the specimen surface. Two different material models are used, a J 2 plasticity and a crystal plasticity model. First, the J 2 plasticity model with combined isotropic and kinematic hardening is used to determine the distribution of quasi-thermal expansion eigenstrain as a function of depth from the surface necessary to induce the target residual stress profile within the microstructure. This distribution of quasi-thermal expansion eigenstrain is then used within a crystal plasticity framework to model the effect of microstructure heterogeneity on the variability in residual stresses among multiple instantiations. This model is verified with experimental X-ray diffraction (XRD) data for scatter in residual stresses for both the initial microstructure and after a single load/unload cycle. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Mechanical Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - SHOT peening KW - RESIDUAL stresses KW - PLASTICITY KW - CHROMIUM-cobalt-nickel-molybdenum alloys KW - NICKEL alloys KW - Crystal plasticity KW - Eigenstrain KW - IN100 KW - Ni-base superalloys KW - Residual stresses N1 - Accession Number: 109126609; Musinski, William D. 1,2; Email Address: william.musinski.1@us.af.mil McDowell, David L. 2,3; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA 3: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; Source Info: Sep2015, Vol. 100, p195; Subject Term: STRAINS & stresses (Mechanics); Subject Term: SHOT peening; Subject Term: RESIDUAL stresses; Subject Term: PLASTICITY; Subject Term: CHROMIUM-cobalt-nickel-molybdenum alloys; Subject Term: NICKEL alloys; Author-Supplied Keyword: Crystal plasticity; Author-Supplied Keyword: Eigenstrain; Author-Supplied Keyword: IN100; Author-Supplied Keyword: Ni-base superalloys; Author-Supplied Keyword: Residual stresses; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.ijmecsci.2015.06.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109126609&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buentello-Hernandez, Rodolfo G. AU - Palazotto, Anthony T1 - Development of a Model Considering High-Speed Sliding Wear. JO - Journal of Aerospace Engineering JF - Journal of Aerospace Engineering Y1 - 2015/09// VL - 28 IS - 5 M3 - Article SP - 1 EP - 10 SN - 08931321 AB - Wear is defined as "the removal of material volume through some mechanical process between two surfaces." This paper focuses on the steps necessary to evaluate wear due to dry sliding between two surfaces at high velocity. Currently, there is a need to identify and compare materials that can endure sliding wear under severe conditions such as high velocities. The high costs associated with the field experimentation of systems subject to high-speed sliding have prevented the collection of the necessary data required to characterize this phenomenon. Simulating wear through finite elements (FEs) would enable its prediction and would reduce experimentation. In the aerospace, automotive, and weapon industries, such a model can aid in material selection, design, and/or testing of systems subjected to wear. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerospace Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SLIDING wear KW - SUPERSONIC aerodynamics KW - VISCOPLASTICITY KW - SHOCK waves KW - FINITE element method KW - DAMAGE models KW - Asperity KW - Damage KW - Finite element KW - High velocity KW - Viscoplasticity KW - Wear N1 - Accession Number: 109020053; Buentello-Hernandez, Rodolfo G. 1 Palazotto, Anthony 2; Email Address: palazotto@sbcglobal.net; Affiliation: 1: Major, Branch Chief, Air Force Research Laboratory, Wright- Patterson AFB, OH 45433 2: Distinguished Professor Aerospace Engineering, Aeronautics and Astronautics Dept., Air Force Institute of Technology, Wright-Patterson AFB, OH 45433; Source Info: Sep2015, Vol. 28 Issue 5, p1; Subject Term: SLIDING wear; Subject Term: SUPERSONIC aerodynamics; Subject Term: VISCOPLASTICITY; Subject Term: SHOCK waves; Subject Term: FINITE element method; Subject Term: DAMAGE models; Author-Supplied Keyword: Asperity; Author-Supplied Keyword: Damage; Author-Supplied Keyword: Finite element; Author-Supplied Keyword: High velocity; Author-Supplied Keyword: Viscoplasticity; Author-Supplied Keyword: Wear; Number of Pages: 10p; Document Type: Article L3 - 10.1061/(ASCE)AS.1943-5525.0000455 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109020053&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kaspi, Ron AU - Lu, Chunte AU - Yang, Chi AU - Newell, Timothy C. AU - Luong, Sanh T1 - Desorption mass spectrometry: Revisiting the in-situ calibration technique for mixed group-V alloy MBE growth of ~3.3 µm diode lasers. JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2015/09// VL - 425 M3 - Article SP - 5 EP - 8 SN - 00220248 AB - We apply the desorption mass spectrometry (DMS) technique and analyze the desorbed Sb species in-situ during MBE growth of mixed As/Sb heterostructures. We demonstrate how DMS is useful in pre-growth calibration of the V/III ratio, the group-III ratio, as well as the Sb-content in quaternary or quinary mixed As/Sb alloys. We also apply DMS to the digital alloy growth method. For demonstration purposes, we start with an un-calibrated MBE system, use the DMS technique to calibrate all of the previously undetermined MBE parameters and grow a ~3.3 µm diode laser heterostructure in only one attempt. The results demonstrate that the DMS technique will allow the MBE to quickly converge toward a set of acceptable growth parameters without the need for ex-situ calibration of alloy composition. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA desorption mass spectrometry KW - GROUP 15 elements KW - SEMICONDUCTOR lasers KW - MOLECULAR beam epitaxy KW - HETEROSTRUCTURES KW - A3. Desorption mass spectrometry KW - A3. In-situ monitoring KW - A3. Molecular beam epitaxy KW - B1. Antimonides KW - B2. Semiconducting quaternary alloys KW - B3. Laser diodes N1 - Accession Number: 103403988; Kaspi, Ron 1; Email Address: ron.kaspi@us.af.mil Lu, Chunte 1 Yang, Chi 1 Newell, Timothy C. 1 Luong, Sanh 1; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, AFRL/RDLTD, 3550 Aberdeen Ave. Kirtland AFB, Albuquerque, NM 87117 USA; Source Info: Sep2015, Vol. 425, p5; Subject Term: PLASMA desorption mass spectrometry; Subject Term: GROUP 15 elements; Subject Term: SEMICONDUCTOR lasers; Subject Term: MOLECULAR beam epitaxy; Subject Term: HETEROSTRUCTURES; Author-Supplied Keyword: A3. Desorption mass spectrometry; Author-Supplied Keyword: A3. In-situ monitoring; Author-Supplied Keyword: A3. Molecular beam epitaxy; Author-Supplied Keyword: B1. Antimonides; Author-Supplied Keyword: B2. Semiconducting quaternary alloys; Author-Supplied Keyword: B3. Laser diodes; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jcrysgro.2015.02.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103403988&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H.J. AU - Brown, G.J. AU - Elhamri, S. AU - Grazulis, L. T1 - Control of anion incorporation in the molecular beam epitaxy of ternary antimonide superlattices for very long wavelength infrared detection. JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2015/09// VL - 425 M3 - Article SP - 25 EP - 28 SN - 00220248 AB - Authors discuss how anion incorporation was controlled during the epitaxial growth process to develop InAs/GaInSb superlattice (SL) materials for very long wavelength infrared applications. A SL structure of 47.0 Å InAs/21.5 Å Ga 0.75 In 0.25 Sb was selected to create a very narrow band gap. Although a molecular beam epitaxy growth developed can produce a strain balanced ternary SL structure with a precisely controlled band gap around 50 meV, the material quality of grown SL layers is particularly sensitive to growth defects formed during an anion incorporation process. Since Group III antisites are the dominant structural defects responsible for the low radiative efficiencies, the authors focus on stabilizing III/V incorporation during SL layer growth by manipulating the growth surface condition for a specific anion cracking condition. The optimized ternary SL materials produced an overall strong photoresponse signal with a relatively sharp band edges and a high mobility of ~10,000 cm 2 /V s that is important for developing infrared materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANIONS KW - MOLECULAR beam epitaxy KW - ANTIMONIDES KW - SUPERLATTICES KW - WAVELENGTHS KW - TERNARY alloys KW - A3. Molecular beam epitaxy KW - A3. Superlattices KW - B1. Antimonides KW - B3. Infrared detector N1 - Accession Number: 103403997; Haugan, H.J. 1; Email Address: heather.haugan.ctr@us.af.mil Brown, G.J. 1 Elhamri, S. 2 Grazulis, L. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, United States 2: Department of Physics, University of Dayton, Ohio 45469, United States; Source Info: Sep2015, Vol. 425, p25; Subject Term: ANIONS; Subject Term: MOLECULAR beam epitaxy; Subject Term: ANTIMONIDES; Subject Term: SUPERLATTICES; Subject Term: WAVELENGTHS; Subject Term: TERNARY alloys; Author-Supplied Keyword: A3. Molecular beam epitaxy; Author-Supplied Keyword: A3. Superlattices; Author-Supplied Keyword: B1. Antimonides; Author-Supplied Keyword: B3. Infrared detector; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jcrysgro.2015.03.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103403997&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gibson, Ricky AU - Gehl, Michael AU - Sears, Jasmine AU - Zandbergen, Sander AU - Nader, Nima AU - Keiffer, Patrick AU - Hendrickson, Joshua AU - Arnoult, Alexandre AU - Khitrova, Galina T1 - Molecular beam epitaxy grown indium self-assembled plasmonic nanostructures. JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2015/09// VL - 425 M3 - Article SP - 307 EP - 311 SN - 00220248 AB - We describe molecular beam epitaxy (MBE) growth conditions for self-assembled indium nanostructures, or islands, which allow for the tuning of the density and size of the indium nanostructures. How the plasmonic resonance of indium nanostructures is affected by the island density, size, distribution in sizes, and indium purity of the nanostructures is explored. These self-assembled nanostructures provide a platform for integration of resonant and non-resonant plasmonic structures within a few nm of quantum wells (QWs) or quantum dots (QDs) in a single process. A 4× increase in peak photoluminescence intensity is demonstrated for near-surface QDs resonantly coupled to indium nanostructures. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR beam epitaxy KW - NANOSTRUCTURES KW - QUANTUM dots KW - PHOTOLUMINESCENCE KW - INDIUM arsenide KW - A1. Nanostructures KW - A3. Molecular beam epitaxy KW - B1. Metals KW - B2. Semiconducting III–V materials N1 - Accession Number: 103404009; Gibson, Ricky 1; Email Address: rgibson@optics.arizona.edu Gehl, Michael 1 Sears, Jasmine 1 Zandbergen, Sander 1 Nader, Nima 1,2,3 Keiffer, Patrick 1 Hendrickson, Joshua 2 Arnoult, Alexandre 4 Khitrova, Galina 1; Affiliation: 1: College of Optical Sciences, University of Arizona, 1630 E University Blvd., Tucson, AZ 85721, USA 2: Air Force Research Laboratory, Sensors Directorate, 2241 Avionics Circle, Wright-Patterson AFB, OH 45433, USA 3: Solid State Scientific Corporation, 12 Simon St. Nashua, NH 03060, USA 4: LAAS-CNRS, 7 Avenue du Colonel Roche, 31000, Toulouse, France; Source Info: Sep2015, Vol. 425, p307; Subject Term: MOLECULAR beam epitaxy; Subject Term: NANOSTRUCTURES; Subject Term: QUANTUM dots; Subject Term: PHOTOLUMINESCENCE; Subject Term: INDIUM arsenide; Author-Supplied Keyword: A1. Nanostructures; Author-Supplied Keyword: A3. Molecular beam epitaxy; Author-Supplied Keyword: B1. Metals; Author-Supplied Keyword: B2. Semiconducting III–V materials; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jcrysgro.2015.02.058 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103404009&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yukon, Stanford P. AU - Malomed, Boris A. T1 - Fluxons in a triangular set of coupled long Josephson junctions. JO - Journal of Mathematical Physics JF - Journal of Mathematical Physics Y1 - 2015/09// VL - 56 IS - 9 M3 - Article SP - 1 EP - 26 PB - American Institute of Physics SN - 00222488 AB - We report results of an analysis of the dynamics of magnetic flux solitons in the system of three long Josephson junctions between three bulk superconductors that form a prism. The system is modeled by coupled sine-Gordon equations for the phases of the junctions. The Aharonov-Bohm constraint takes into account the axial magnetic flux enclosed by the prism and reduces the system from three independent phases to two. The equations of motion for the phases include dissipative terms, and a control parameter δ which accounts for the deviation of the enclosed flux from half a quantum. Analyzing the effective potential of the coupled equations, we identify different species of topological and non-topological phase solitons (fluxons) in this system. In particular, subkinks with fractional topological charges ±1/3 and ±2/3, confined inside integer-charge fluxons, may be mapped onto the root diagrams for mesons and baryons in the original quark model of hadrons. Solutions for straight-line kinks and for two types of non-topological solitons are obtained in an explicit analytical form. Numerical tests demonstrate that the former species is unstable against breakup into pairs of separating single-fluxon kinks. The non-topological kinks feature metastability, eventually breaking up into fluxonantifluxon pairs. Free fractional-fluxon kinks, that connect different potential minima and are, accordingly, pulled by the potential difference, are also considered. Using the momentum-balance method, we predict the velocity at which these kinks should move in the presence of the dissipation. Numerical tests demonstrate that the analysis predicts the velocity quite closely. Higher-energy static solutions for all of the stable kink types mentioned above, as well as kinks connecting false vacua, are found by means of the shooting method. Inelastic collisions among the stable fractional and single-fluxon kinks are investigated numerically. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Mathematical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SET theory KW - JOSEPHSON junctions KW - SUPERCONDUCTORS KW - SINE-Gordon equation KW - QUANTUM theory N1 - Accession Number: 110166854; Yukon, Stanford P. 1; Email Address: yukon@alum.mit.edu Malomed, Boris A. 2; Affiliation: 1: Air Force Research Laboratory, USA 2: Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel; Source Info: 2015, Vol. 56 Issue 9, p1; Subject Term: SET theory; Subject Term: JOSEPHSON junctions; Subject Term: SUPERCONDUCTORS; Subject Term: SINE-Gordon equation; Subject Term: QUANTUM theory; Number of Pages: 26p; Illustrations: 2 Color Photographs, 14 Diagrams, 8 Graphs; Document Type: Article L3 - 10.1063/1.4928927 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110166854&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fei Li AU - Choudhari, Meelan AU - Chau-Lyan Chang AU - Kimmel, Roger AU - Adamczak, David AU - Smith, Mark T1 - Transition Analysis for the Ascent Phase of HIFiRE-1 Flight Experiment. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2015/09//Sep/Oct2015 VL - 52 IS - 5 M3 - Article SP - 1283 EP - 1293 SN - 00224650 AB - The HIFiRE-1 flight experiment provided a valuable database for boundary-layer transition over a 7 deg halfangle, circular cone model from supersonic to hypersonic Mach numbers as well as a range of Rey nolds numbers and angles of incidence. This paper reports the findings from a computational analys.s of the measured m-fiightTrans, turn behavior during the ascent phase. Given a nearly zero angle of attack, computations indicate that the most likely cause for transition during the flight window of 19 to 22.5 s is the amplification of second-mode mstabd.t.es in the am.nar boundary layer, except in the vicinity of the cone meridian, where a roughness element was placed midway along the length of the cone. The growth of first-mode instabilities is found to be weak at all trajectory points analyzed from e ascent phase. Based on the time histories of temperature and/or heat flux at transducer locations within the aft portion of the cone, the onset of transition across the aforementioned window is found to correlate with an average linear Afactor, based on parabolized stability equations, of approximately 13.3. For times less than approximately 18 s in o the flight, the peak amplification ratio for second-mode disturbances is too small to cause transition because of the lower Mach numbers at earlier times. Therefore, the observed transition at these times is attributed to an unknown physica mechanism that is potentially related to the step discontinuities in surface height near the changes in surface materia. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERSONIC aerodynamics KW - HYPERSONIC aerodynamics KW - COMPUTATIONAL aerodynamics KW - REYNOLDS equations KW - BOUNDARY layer (Aerodynamics) N1 - Accession Number: 110501617; Fei Li 1,2 Choudhari, Meelan 1,2 Chau-Lyan Chang 1,3 Kimmel, Roger 4,5 Adamczak, David 4,5 Smith, Mark 6,7; Affiliation: 1: NASA Langley Research Center, Hampton, Virginia 23681 2: Aerospace Technologist, Computational AeroSciences Branch, M.S. 128 3: Principal Aerospace Engineer, Aerospace Systems Directorate, 1950 5th Street 4: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 5: Senior Aerospace Engineer, Aerospace Systems Directorate, 1950 5th Street 6: NASA Armstrong Research Center, Edwards, California 93523 7: Aerospace Engineer, Aerodynamics and Propulsion Branch, M.S. 2228; Source Info: Sep/Oct2015, Vol. 52 Issue 5, p1283; Subject Term: SUPERSONIC aerodynamics; Subject Term: HYPERSONIC aerodynamics; Subject Term: COMPUTATIONAL aerodynamics; Subject Term: REYNOLDS equations; Subject Term: BOUNDARY layer (Aerodynamics); Number of Pages: 11p; Document Type: Article L3 - 10.2514/1.A33258 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110501617&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hausgen, Paul E. AU - Carpenter, Bemie T1 - Value of Solar Array Technology Advancement. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2015/09//Sep/Oct2015 VL - 52 IS - 5 M3 - Article SP - 1388 EP - 1394 SN - 00224650 AB - In making investment decisions for spacecraft technology development, it is critical to understand how such advances impact spacecraft budgets such as mass, volume, and power. Beneficial effects on spacecraft budgets translate into improved payload capability and/or reduced spacecraft cost. Reduced cost and improved capability are central goals for the space enterprise, including both military and commercial entities. This work systematically evaluates the effect of increasing solar array performance on spacecraft mass, volume, power, and cost budgets for three assumed missions: low Earth orbit (3 kW), medium Earth orbit (10 kW), and geostationary Earth orbit (20 kW). Solar array metrics used to quantify improved solar array performance are specific power (watts per kilogram), stowed power density (kilowatts per cubic meter), and solar cell efficiency (percent). Changes in solar array metrics are translated into the effect on spacecraft mass, volume, power, and cost budgets for the three assumed missions. Although the results presented are anchored to an assumed mission set with an associated baseline solar array design, the trends are applicable to any mission set and can easily be extended and adjusted based on a different baseline set of solar array design parameters. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR cells KW - TECHNOLOGICAL innovations KW - ELECTRONICS KW - TECHNOLOGICAL risk assessment KW - TECHNOLOGICAL revolution N1 - Accession Number: 110501626; Hausgen, Paul E. 1,2 Carpenter, Bemie 3,4; Affiliation: 1: U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117 2: Senior Research Mechanical Engineer, Space Vehicles Directorate, 3550 Aberdeen Avenue SE 3: Aerospace Corporation, Albuquerque, New Mexico 87110 4: Senior Project Engineer, Space Innovation Directorate, 2155 Louisiana Street NE; Source Info: Sep/Oct2015, Vol. 52 Issue 5, p1388; Subject Term: SOLAR cells; Subject Term: TECHNOLOGICAL innovations; Subject Term: ELECTRONICS; Subject Term: TECHNOLOGICAL risk assessment; Subject Term: TECHNOLOGICAL revolution; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 7p; Document Type: Article L3 - 10.2514/1.A33324 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110501626&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thompson, Eric R. AU - Iyer, Nandini AU - Simpson, Brian D. AU - Wakefield, Gregory H. AU - Kieras, David E. AU - Brungart, Douglas S. T1 - Enhancing listener strategies using a payoff matrix in speech-on-speech masking experiments. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2015/09// VL - 138 IS - 3 M3 - Article SP - 1297 EP - 1304 SN - 00014966 AB - Speech recognition was measured as a function of the target-to-masker ratio (TMR) with syntactically similar speech maskers. In the first experiment, listeners were instructed to report keywords from the target sentence. Data averaged across listeners showed a plateau in performance below 0 dB TMR when masker and target sentences were from the same talker. In this experiment, some listeners tended to report the target words at all TMRs in accordance with the instructions, while others reported keywords from the louder of the sentences, contrary to the instructions. In the second experiment, stimuli were the same as in the first experiment, but listeners were also instructed to avoid reporting the masker keywords, and a payoff matrix penalizing masker keywords and rewarding target keywords was used. In this experiment, listeners reduced the number of reported masker keywords, and increased the number of reported target keywords overall, and the average data showed a local minimum at 0dB TMR with same-talker maskers. The best overall performance with a same-talker masker was obtained with a level difference of 9dB, where listeners achieved near perfect performance when the target was louder, and at least 80% correct performance when the target was the quieter of the two sentences. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AUDITORY masking KW - LISTENING KW - KEYWORDS KW - SENTENCES (Grammar) KW - PERFORMANCE KW - SOUND pressure N1 - Accession Number: 110104415; Thompson, Eric R. 1; Email Address: eric.thompson.28@us.af.mil Iyer, Nandini 1 Simpson, Brian D. 1 Wakefield, Gregory H. 2 Kieras, David E. 2 Brungart, Douglas S. 3; Affiliation: 1: Battlespace Acoustics Branch, Air Force Research Laboratory, 2610 Seventh Street B441, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan 48109, USA 3: Walter Reed National Military Medical Center, 8901 Rockville Pike, Bethesda, Maryland 20889, USA; Source Info: Sep2015, Vol. 138 Issue 3, p1297; Subject Term: AUDITORY masking; Subject Term: LISTENING; Subject Term: KEYWORDS; Subject Term: SENTENCES (Grammar); Subject Term: PERFORMANCE; Subject Term: SOUND pressure; Number of Pages: 8p; Document Type: Article L3 - 10.1121/1.4928395 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110104415&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Winder, S.L. AU - Ruggles-Wrenn, M.B. AU - Parthasarathy, T. AU - Key, T. AU - Carney, C.M. T1 - Thermo-chemical compatibility of hafnium diboride with yttrium aluminum garnet at 1500 °C in air. JO - Journal of the European Ceramic Society JF - Journal of the European Ceramic Society Y1 - 2015/09// VL - 35 IS - 9 M3 - Article SP - 2437 EP - 2444 SN - 09552219 AB - Due to its high thermal conductivity and oxidation resistance at very high temperatures, hafnium diboride (HfB 2 ) is being considered for use as a leading edge material on sharp-bodied reentry vehicles. In structural applications, HfB 2 is likely to operate at elevated temperature in proximity to other refractory materials. The thermo-chemical compatibility of HfB 2 with (1) single-crystal Y 3 Al 5 O 12 (SX YAG) and (2) Al 2 O 3 (alumina) was examined in multiple contact combinations during furnace heat treatment exposures at 1500 °C in air. The reaction products were characterized using optical microscopy, SEM, EDS, and XRD. The results are presented and possible mechanisms are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the European Ceramic Society is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - YTTRIUM KW - ALUMINUM KW - GARNET KW - HEAT treatment KW - MICROSCOPY KW - HfB 2 KW - Stability KW - YAG N1 - Accession Number: 102115291; Winder, S.L. 1 Ruggles-Wrenn, M.B. 1; Email Address: marina.ruggles-wrenn@afit.edu Parthasarathy, T. 2 Key, T. 2 Carney, C.M. 3; Affiliation: 1: Air Force Institute of Technology, Wright-Patterson Air Force Base, OH 45433-7765, United States 2: UES Inc., Dayton, OH 45432, United States 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7817, United States; Source Info: Sep2015, Vol. 35 Issue 9, p2437; Subject Term: YTTRIUM; Subject Term: ALUMINUM; Subject Term: GARNET; Subject Term: HEAT treatment; Subject Term: MICROSCOPY; Author-Supplied Keyword: HfB 2; Author-Supplied Keyword: Stability; Author-Supplied Keyword: YAG; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jeurceramsoc.2015.03.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102115291&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guthrie, O’neil W. AU - Wong, Brian A. AU - McInturf, Shawn M. AU - Reboulet, James E. AU - Ortiz, Pedro A. AU - Mattie, David R. T1 - Inhalation of Hydrocarbon Jet Fuel Suppress Central Auditory Nervous System Function. JO - Journal of Toxicology & Environmental Health: Part A JF - Journal of Toxicology & Environmental Health: Part A Y1 - 2015/09// VL - 78 IS - 18 M3 - Article SP - 1154 EP - 1169 SN - 15287394 AB - More than 800 million L/d of hydrocarbon fuels is used to power cars, boats, and jet airplanes. The weekly consumption of these fuels necessarily puts the public at risk for repeated inhalation exposure. Recent studies showed that exposure to hydrocarbon jet fuel produces lethality in presynaptic sensory cells, leading to hearing loss, especially in the presence of noise. However, the effects of hydrocarbon jet fuel on the central auditory nervous system (CANS) have not received much attention. It is important to investigate the effects of hydrocarbons on the CANS in order to complete current knowledge regarding the ototoxic profile of such exposures. The objective of the current study was to determine whether inhalation exposure to hydrocarbon jet fuel might affect the functions of the CANS. Male Fischer 344 rats were randomly divided into four groups (control, noise, fuel, and fuel + noise). The structural and functional integrity of presynaptic sensory cells was determined in each group. Neurotransmission in both peripheral and central auditory pathways was simultaneously evaluated in order to identify and differentiate between peripheral and central dysfunctions. There were no detectable effects on pre- and postsynaptic peripheral functions. However, the responsiveness of the brain was significantly depressed and neural transmission time was markedly delayed. The development of CANS dysfunctions in the general public and the military due to cumulative exposure to hydrocarbon fuels may represent a significant but currently unrecognized public health issue. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Toxicology & Environmental Health: Part A is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WORD deafness KW - HYDROCARBONS -- Physiological effect KW - JET planes -- Fuel KW - POISONOUS gases -- Toxicology KW - CENTRAL nervous system -- Abnormalities KW - RISK factors N1 - Accession Number: 110360723; Guthrie, O’neil W. 1,2,3 Wong, Brian A. 4 McInturf, Shawn M. 4 Reboulet, James E. 4 Ortiz, Pedro A. 4 Mattie, David R. 5; Affiliation: 1: Cell & Molecular Pathology Laboratory, Department of Communication Sciences and Disorders, Northern Arizona University, Flagstaff, Arizona, USA 2: Research Service, Loma Linda Veterans Affairs Medical Center, Loma Linda, California, USA 3: Department of Otolaryngology and Head & Neck Surgery, School of Medicine, Loma Linda University Medical Center, Loma Linda, California, USA 4: Naval Medical Research Unit–Dayton, Wright-Patterson Air Force Base, Ohio, USA 5: Molecular Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio, USA; Source Info: 2015, Vol. 78 Issue 18, p1154; Subject Term: WORD deafness; Subject Term: HYDROCARBONS -- Physiological effect; Subject Term: JET planes -- Fuel; Subject Term: POISONOUS gases -- Toxicology; Subject Term: CENTRAL nervous system -- Abnormalities; Subject Term: RISK factors; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 16p; Document Type: Article L3 - 10.1080/15287394.2015.1070389 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110360723&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wagner, David E. AU - Neupauer, Roseanna M. AU - Cichowitz, Cody T1 - Adjoint-Based Probabilistic Source Characterization in Water-Distribution Systems with Transient Flows and Imperfect Sensors. JO - Journal of Water Resources Planning & Management JF - Journal of Water Resources Planning & Management Y1 - 2015/09// VL - 141 IS - 9 M3 - Article SP - 1 EP - 11 SN - 07339496 AB - If a contamination event occurs in a water distribution system, sensors in the network may observe water quality changes. The data from these sensors can be used to identify the source of the contamination. The sensors can be binary sensors that record the presence or absence of contamination, fuzzy sensors that measure concentration within a set range, or perfect sensors that measure the exact concentration within the bounds of measurement uncertainty. This work presents an adjoint-based probabilistic approach for identifying the source node, source release time, and source strength for an instantaneous release of contamination based on sensor observations and known system hydraulics. In the adjoint approach, information is propagated upgradient from the sensors to the possible source nodes. EPANET is used to simulate the transient hydraulics of the pipe network and the upgradient propagation of the adjoint state through the network. The resulting adjoint states are related to probability density functions of the source release times at all possible source nodes. For fuzzy or perfect sensors, these probabilities can be used to determine the most likely source node. A hypothetical example is used to show that this method is accurate, even for a small number of sensor observations and complex hydraulics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Water Resources Planning & Management is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WATER -- Distribution KW - UNSTEADY flow (Fluid dynamics) KW - WATER quality -- Mathematical models KW - PROBABILITY theory KW - WATER pollution KW - Adjoint state KW - Mathematical models KW - Probability KW - Water distribution systems KW - Water quality N1 - Accession Number: 108988707; Wagner, David E. 1 Neupauer, Roseanna M. 2; Email Address: neupauer@colorado.edu Cichowitz, Cody 3; Affiliation: 1: Bioenvironmental Engineering Flight Commander, United States Air Force, 280 First St., Holloman Air Force Base, NM 88330 2: Associate Professor, Dept. of Civil, Environmental, and Architectural Engineering, Univ. of Colorado Boulder, 1111 Engineering Dr., Boulder, CO 80309 3: Johns Hopkins Univ. School of Medicine, P.O. Box 850, Buena Vista, CO 81211; Source Info: Sep2015, Vol. 141 Issue 9, p1; Subject Term: WATER -- Distribution; Subject Term: UNSTEADY flow (Fluid dynamics); Subject Term: WATER quality -- Mathematical models; Subject Term: PROBABILITY theory; Subject Term: WATER pollution; Author-Supplied Keyword: Adjoint state; Author-Supplied Keyword: Mathematical models; Author-Supplied Keyword: Probability; Author-Supplied Keyword: Water distribution systems; Author-Supplied Keyword: Water quality; NAICS/Industry Codes: 237110 Water and Sewer Line and Related Structures Construction; NAICS/Industry Codes: 221310 Water Supply and Irrigation Systems; Number of Pages: 11p; Document Type: Article L3 - 10.1061/(ASCE)WR.1943-5452.0000508 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108988707&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - DAVIS III, R. AUBREY1 T1 - THE SEARCH FOR STATUS: CHARTING THE CONTOURS OF COMBATANT STATUS IN THE AGE OF ISIS. JO - Military Law Review JF - Military Law Review J1 - Military Law Review PY - 2015/09// Y1 - 2015/09// VL - 223 IS - 3 CP - 3 M3 - Article SP - 556 EP - 609 SN - 00264040 AB - [T]he lawyer must do his duty regardless of dialectical doubtsthough with a feeling of humility springing from the knowledge that if international law is, in some ways, at the vanishing point of law, the law of war is, perhaps even more conspicuously, at the vanishing point of international law. He must continue to expound and to elucidate the various aspects of the law of war fo r the use of armed forces, of governments, and of others. [ABSTRACT FROM AUTHOR] KW - Unlawful combatants KW - Belligerency KW - Terrorism -- Law & legislation KW - War (International law) KW - Islamic State (Organization) KW - Shabaab (Organization) N1 - Accession Number: 114122583; Authors:DAVIS III, R. AUBREY 1; Affiliations: 1: Judge Advocate, United States Air Force; Subject: Unlawful combatants; Subject: Islamic State (Organization); Subject: Belligerency; Subject: Terrorism -- Law & legislation; Subject: War (International law); Subject: Shabaab (Organization); Number of Pages: 54p; Court Cases: Prosecutor v. Dusko Tadic; Case No. IT-94-1-AR72; Hamdan v. Rumsfeld; 548 U.S. 557, 111 (2006); Prosecutor v. Galić; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=114122583&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR AU - Enloe, C. L. AU - Amatucci, W. E. AU - McHarg, M. G. AU - Balthazor, R. L. T1 - Screens versus microarrays for ruggedized retarding potential analyzers. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2015/09// VL - 86 IS - 9 M3 - Article SP - 1 EP - 6 PB - American Institute of Physics SN - 00346748 AB - An array of highly miniaturized electrostatic lenses is shown to be a viable replacement for meshes or screens in a retarding potential analyzer (RPA) where mechanical ruggedness or the ability to intercept large currents of energetic particles is desirable. Data from a prototype device are presented cross-calibrated with a traditional planar RPA indicating how the so-called microarray configuration avoids energy-dependent transparency (either reduced or enhanced) associated with meshes or screens while providing accurate energy analysis with reasonable energy resolution. In contrast, another ruggedized configuration employing a screen is presented, showing the severity of energy-dependent enhanced transparency, verified by numerical simulation. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROSTATICS KW - RESEARCH KW - ELECTRIC currents -- Research KW - PARTICLES KW - COMPUTER simulation KW - RESOLUTION (Optics) N1 - Accession Number: 110105692; Enloe, C. L. 1 Amatucci, W. E. 2 McHarg, M. G. 1 Balthazor, R. L. 1; Affiliation: 1: United States Air Force Academy, Colorado 80840, USA 2: United States Naval Research Laboratory, Washington, DC 20375, USA; Source Info: 2015, Vol. 86 Issue 9, p1; Subject Term: ELECTROSTATICS; Subject Term: RESEARCH; Subject Term: ELECTRIC currents -- Research; Subject Term: PARTICLES; Subject Term: COMPUTER simulation; Subject Term: RESOLUTION (Optics); Number of Pages: 6p; Illustrations: 4 Color Photographs, 2 Black and White Photographs, 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.4929532 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110105692&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shade, Paul A. AU - Blank, Basil AU - Schuren, Jay C. AU - Turner, Todd J. AU - Kenesei, Peter AU - Goetze, Kurt AU - Suter, Robert M. AU - Bernier, Joel V. AU - Shiu Fai Li AU - Lind, Jonathan AU - Lienert, Ulrich AU - Almer, Jonathan T1 - A rotational and axial motion system load frame insert for in situ high energy x-ray studies. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2015/09// VL - 86 IS - 9 M3 - Article SP - 1 EP - 8 PB - American Institute of Physics SN - 00346748 AB - High energy x-ray characterization methods hold great potential for gaining insight into the behavior of materials and providing comparison datasets for the validation and development of mesoscale modeling tools. A suite of techniques have been developed by the x-ray community for characterizing the 3D structure and micromechanical state of polycrystalline materials; however, combining these techniques with in situ mechanical testing under well characterized and controlled boundary conditions has been challenging due to experimental design requirements, which demand new high-precision hardware as well as access to high-energy x-ray beamlines. We describe the design and performance of a load frame insert with a rotational and axial motion system that has been developed to meet these requirements. An example dataset from a deforming titanium alloy demonstrates the new capability. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ROTATIONAL motion KW - RESEARCH KW - X-rays -- Research KW - POLYCRYSTALS KW - MICROSTRUCTURE KW - STRUCTURAL components N1 - Accession Number: 110105709; Shade, Paul A. 1; Email Address: paul.shade.1@us.af.mil Blank, Basil 2 Schuren, Jay C. 1,3 Turner, Todd J. 1 Kenesei, Peter 4 Goetze, Kurt 4 Suter, Robert M. 5 Bernier, Joel V. 6 Shiu Fai Li 6,7 Lind, Jonathan 5,6 Lienert, Ulrich 4,8 Almer, Jonathan 4; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 2: PulseRay, Beaver Dams, New York 14812, USA 3: Nutonian, Inc., Somerville, Massachusetts 02144, USA 4: Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA 5: Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA 6: Engineering Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, USA 7: Human Diagnosis Project, San Francisco, California 94110, USA 8: DESY, Photon Science, Hamburg, Germany; Source Info: 2015, Vol. 86 Issue 9, p1; Subject Term: ROTATIONAL motion; Subject Term: RESEARCH; Subject Term: X-rays -- Research; Subject Term: POLYCRYSTALS; Subject Term: MICROSTRUCTURE; Subject Term: STRUCTURAL components; Number of Pages: 8p; Illustrations: 5 Color Photographs, 1 Graph; Document Type: Article L3 - 10.1063/1.4927855 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110105709&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Oberly, Charles E. AU - Bash, Michelle AU - Razidlo, Benjamin R. AU - Michalak, Travis E. AU - Rodriguez, Fernando T1 - Integrated Power and Thermal Management System (IPTMS) Demonstration Including Preliminary Results of Rapid Dynamic Loading and Load Shedding at High Power. JO - SAE International Journal of Aerospace JF - SAE International Journal of Aerospace Y1 - 2015/09// VL - 8 IS - 1 M3 - Article SP - 60 EP - 71 SN - 19463855 AB - An IPTMS hardware facility has been established in the laboratories of the Aerospace Systems Directorate of the Air Force Research Laboratory (AFRL) at Wright-Paterson Air Force Base (WPAFB). This hardware capability was established to analyze the transient behavior of a high power Electrical Power System (EPS) coupled virtually to a Thermal Management System (TMS) under fast dynamic loading conditions. The system incorporates the use of dynamic electrical load, engine emulation, energy storage, and emulated thermal loads operated to investigate dynamics under step load conditions. Hardware architecture and control options for the IPTMS are discussed. This paper summarizes the IPTMS laboratory demonstration system, its capabilities, and preliminary test results. [ABSTRACT FROM AUTHOR] AB - Copyright of SAE International Journal of Aerospace is the property of SAE International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL management (Electronic packaging) KW - MATERIALS -- Dynamic testing KW - LOAD shedding (Electric power) KW - ENERGY storage KW - ELECTRIC power KW - AIR Force Research Laboratory (Wright-Patterson Air Force Base, Ohio) N1 - Accession Number: 117561964; Oberly, Charles E. 1 Bash, Michelle 2 Razidlo, Benjamin R. 3 Michalak, Travis E. 3 Rodriguez, Fernando 3; Email Address: fernando.rodriguez.3@us.af.mil; Affiliation: 1: UES Inc. 2: PC Krause & Associates 3: US Air Force Research Laboratory; Source Info: Sep2015, Vol. 8 Issue 1, p60; Subject Term: THERMAL management (Electronic packaging); Subject Term: MATERIALS -- Dynamic testing; Subject Term: LOAD shedding (Electric power); Subject Term: ENERGY storage; Subject Term: ELECTRIC power; Company/Entity: AIR Force Research Laboratory (Wright-Patterson Air Force Base, Ohio); Number of Pages: 12p; Document Type: Article L3 - 10.4271/2015-01-2416 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=117561964&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tun Beltran, Samuel AU - Cutchin, S. AU - White, S. T1 - A New Look at Type-III Bursts and Their Use as Coronal Diagnostics. JO - Solar Physics JF - Solar Physics Y1 - 2015/09// VL - 290 IS - 9 M3 - Article SP - 2423 EP - 2437 PB - Springer Science & Business Media B.V. SN - 00380938 AB - We present meter-wave solar radio spectra of the highest spectro-temporal resolution achieved to date. The observations, obtained with the first station of the Long Wavelength Array (LWA1), show unprecedented detail of solar emissions across a wide bandwidth during a Type-III/IIIb storm. Our flux calibration demonstrates that the LWA1 can detect Type-III bursts much weaker than 1 SFU, much lower than previous observations, and that the distribution of fluxes in these bursts varies with frequency. The high sensitivity and low noise in the data provide strong constraints to models of this type of plasma emission, providing evidence against the idea that Type-IIIb striae are generated from electrons trapped in Langmuir-wave sidebands. The continuous generation of electron beams in the corona revealed by the high density Type-III storm is evidence for ubiquitous magnetic reconnection in the lower corona. Such an abundance of reconnection events not only contributes to the total coronal energy budget, but also provides an engine by which to form the populations of seed particles responsible for proton-rich solar energetic-particle events. An active region (AR) with such levels of reconnection and the accompanying Type-III/IIIb storms is proposed here to be associated with an increase of SEP production if a CME erupts. The data's constraints on existing theories of Type-IIIb production are used to make an association of the observed Type-IIIb storm to specific electron-beam paths with increased inhomogeneities in density, temperature, and/or turbulence. This scenario ties in the observed timing of Type-III and -IIIb storms, constrained theories of Type-III and -IIIb emission, and the ability of the emitting AR to produce a strong SEP event. The result requires but a single observable to cement these ideas, the statistical correlation of Type-III/IIIb activity with SEP-productive AR. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR radio emission KW - SOLAR radio bursts KW - WAVELENGTHS KW - OBSERVATION (Scientific method) KW - SUN -- Active regions KW - Corona, radio emission KW - Radio bursts, dynamic spectrum KW - Radio bursts, type III KW - Waves, plasma N1 - Accession Number: 110547283; Tun Beltran, Samuel 1; Email Address: Samuel.TunBeltran@nrl.navy.mil Cutchin, S. 1 White, S. 2; Affiliation: 1: Naval Research Laboratory, Washington 20375 USA 2: Space Vehicles Division, Air Force Research Laboratory, Albuquerque USA; Source Info: Sep2015, Vol. 290 Issue 9, p2423; Subject Term: SOLAR radio emission; Subject Term: SOLAR radio bursts; Subject Term: WAVELENGTHS; Subject Term: OBSERVATION (Scientific method); Subject Term: SUN -- Active regions; Author-Supplied Keyword: Corona, radio emission; Author-Supplied Keyword: Radio bursts, dynamic spectrum; Author-Supplied Keyword: Radio bursts, type III; Author-Supplied Keyword: Waves, plasma; Number of Pages: 15p; Document Type: Article L3 - 10.1007/s11207-015-0760-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110547283&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Timothy Haugan T1 - Viewpoint on fast track communication by V Selvamanickam et al: Critical current density above 15 MA cm−2 at 30 K, 3 T in 2.2 μm thick heavily-doped (Gd,Y)Ba2Cu3Ox superconductor tapes’. JO - Superconductor Science & Technology JF - Superconductor Science & Technology Y1 - 2015/09// VL - 28 IS - 9 M3 - Opinion SP - 1 EP - 1 SN - 09532048 AB - The author discusses the study Fast Track Communication by researcher V.Selvamanickam, related to flux pinning mechanisms, and processing methodologies. Topics discussed include lack of qualification for the precise volume percentage of the phases formed, no observation in the Y2BaCuO5 'green' phase tied to Yttrium barium copper oxide (YBCO) and requirement of raising the device's operation temperature for increasing current density in applied fields. KW - FLUX pinning KW - RESEARCH KW - PHASES of matter KW - YTTRIUM barium copper oxide KW - ELECTROCHROMIC devices KW - CURRENT density (Electromagnetism) N1 - Accession Number: 108969812; Timothy Haugan 1; Affiliation: 1: The Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Sep2015, Vol. 28 Issue 9, p1; Subject Term: FLUX pinning; Subject Term: RESEARCH; Subject Term: PHASES of matter; Subject Term: YTTRIUM barium copper oxide; Subject Term: ELECTROCHROMIC devices; Subject Term: CURRENT density (Electromagnetism); Number of Pages: 1p; Document Type: Opinion L3 - 10.1088/0953-2048/28/9/090502 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108969812&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - DeCerbo, J.N. AU - Bray, K.R. AU - Merrett, J.N. T1 - Analysis of multilayered, nitrogen-doped aluminum oxide and hafnium oxide dielectric films for wide-temperature capacitor applications. JO - Thin Solid Films JF - Thin Solid Films Y1 - 2015/09// VL - 590 M3 - Article SP - 71 EP - 75 SN - 00406090 AB - Capacitors with stable dielectric properties across a wide temperature range are a vital component in many power conditioning applications. High breakdown strength and low loss are also important for many applications. In this study, the dielectric properties of multilayer nitrogen-doped aluminum oxide and hafnium oxide films were characterized, comparing their properties to single layer films. The films were found to be stable from − 50 to 200 °C and from 20 Hz to 1 MHz. An order of magnitude decrease in leakage current was observed for the bilayer films. Breakdown strength for the multilayer films increased up to 75%. This concurs with the hypothesis that the addition of dielectric interfaces provides area to trap and dissipate runaway charge moving through the dielectric, thus lowering leakage current and increasing the breakdown strength. [ABSTRACT FROM AUTHOR] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM oxide KW - HAFNIUM oxide KW - DIELECTRIC films KW - CAPACITORS KW - DOPING agents (Chemistry) KW - Aluminum oxide KW - Capacitor KW - Dielectric KW - Hafnium oxide KW - Wide temperature N1 - Accession Number: 109357155; DeCerbo, J.N. 1; Email Address: jennifer.decerbo@us.af.mil Bray, K.R. 2 Merrett, J.N. 1; Affiliation: 1: United States Air Force Research Laboratory, Aerospace Systems Directorate, 2130 Eighth St., WPAFB, OH 45433, United States 2: UES, Inc., 4401 Dayton Xenia Rd., Beavercreek, OH 45432, United States; Source Info: Sep2015, Vol. 590, p71; Subject Term: ALUMINUM oxide; Subject Term: HAFNIUM oxide; Subject Term: DIELECTRIC films; Subject Term: CAPACITORS; Subject Term: DOPING agents (Chemistry); Author-Supplied Keyword: Aluminum oxide; Author-Supplied Keyword: Capacitor; Author-Supplied Keyword: Dielectric; Author-Supplied Keyword: Hafnium oxide; Author-Supplied Keyword: Wide temperature; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.tsf.2015.07.047 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109357155&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Murphy, Neil R. AU - Sun, Lirong AU - Jones, John G. AU - Grant, John T. T1 - Hybrid co-deposition of mixed-valent molybdenum–germanium oxides (MoxGeyOz): A route to tunable optical transmission. JO - Thin Solid Films JF - Thin Solid Films Y1 - 2015/09// VL - 590 M3 - Article SP - 248 EP - 259 SN - 00406090 AB - Mixed-valent oxides of molybdenum and germanium were deposited simultaneously using reactive magnetron co-deposition within an oxygen–argon environment. The films' stoichiometry, optical, and physical properties were varied through changes in oxygen partial pressure induced by systematic variation of the potential applied to the molybdenum cathode. The oxygen partial pressure was determined from the drop in pressure as measured by a capacitance manometer, assuming constant argon partial pressure. To facilitate deposition, a constant power of 100 W DC was applied to the germanium cathode, while power was applied to the molybdenum target using a modulated pulse power supply. Modulated pulse power magnetron sputtering was used due to its ability to generate high target power densities, allowing for rapid reduction of oxygen on the surface of the “oxygen poisoned” molybdenum cathode, as well as for its highly metallic plasma resulting in increased oxygen-gettering capability. Changes in the modulated pulse power supply's capacitor bank voltage load, stepped from settings of 300 to 380 V, resulted in films ranging from mixtures of transparent GeO 2 (Ge 4 + ) and MoO 3 (Mo 6 + ) to the introduction of various absorptive ionic species including Mo 5 + , Mo 4 + , Ge 2 + and Ge 0 , as determined from X-ray photoelectron spectroscopy. The presence of each of the aforementioned ions results in characteristic changes in the films' band energies and optical absorption. As deposited Mo x Ge y O z thin films grown using this method have been shown to have optical gap energies that are able to be tailored between 3.57 eV and 0.18 eV, spanning useful ranges for devices operating in the visible and near-infrared. [ABSTRACT FROM AUTHOR] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLYBDENUM compounds KW - GERMANIUM oxide films KW - TRANSMISSION of light KW - PARTIAL pressure KW - STOICHIOMETRY KW - ELECTRIC capacity KW - Ellipsometry KW - Germanium oxide KW - Magnetron sputtering KW - Mixed oxides KW - Molybdenum oxide KW - Optical characterization KW - Thin film KW - X-ray photoelectron spectroscopy N1 - Accession Number: 109357130; Murphy, Neil R. 1; Email Address: neil.murphy.1@us.af.mil Sun, Lirong 2; Email Address: lirong.sun.2.ctr@us.af.mil Jones, John G. 1; Email Address: John.jones.66@us.af.mil Grant, John T. 2; Email Address: john.grant.5.ctr@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base (WPAFB), Dayton, OH 45433, USA 2: General Dynamics Information Technology, 5100 Springfield Street, Dayton, OH 45431, USA; Source Info: Sep2015, Vol. 590, p248; Subject Term: MOLYBDENUM compounds; Subject Term: GERMANIUM oxide films; Subject Term: TRANSMISSION of light; Subject Term: PARTIAL pressure; Subject Term: STOICHIOMETRY; Subject Term: ELECTRIC capacity; Author-Supplied Keyword: Ellipsometry; Author-Supplied Keyword: Germanium oxide; Author-Supplied Keyword: Magnetron sputtering; Author-Supplied Keyword: Mixed oxides; Author-Supplied Keyword: Molybdenum oxide; Author-Supplied Keyword: Optical characterization; Author-Supplied Keyword: Thin film; Author-Supplied Keyword: X-ray photoelectron spectroscopy; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.tsf.2015.08.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109357130&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hussain, Saber M. AU - Warheit, David B. AU - Ng, Sheung P. AU - Comfort, Kristen K. AU - Grabinski, Christin M. AU - Braydich-Stolle, Laura K. T1 - At the Crossroads of Nanotoxicology in vitro: Past Achievements and Current Challenges. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 2015/09// VL - 147 IS - 1 M3 - Article SP - 5 EP - 16 SN - 10966080 AB - The exponential growth in the employment of nanomaterials (NMs) has given rise to the field of nanotoxicology; which evaluates the safety of engineered NMs. Initial nanotoxicological studies were limited by a lack of both available materials and accurate biodispersion characterization tools. However, the years that followed were marked by the development of enhanced synthesis techniques and characterization technologies; which are now standard practice for nanotoxicological evaluation. Paralleling advances in characterization, significant progress was made in correlating specific physical parameters, such as size, morphology, or coating, to resultant physiological responses. Although great strides have been made to advance the field, nanotoxicology is currently at a crossroads and faces a number of obstacles and technical limitations not associated with traditional toxicology. Some of the most pressing and influential challenges include establishing full characterization requirements, standardization of dosimetry, evaluating kinetic rates of ionic dissolution, improving in vitro to in vivo predictive efficiencies, and establishing safety exposure limits. This Review will discuss both the progress and future directions of nanotoxicology: highlighting key previous research successes and exploring challenges plaguing the field today. [ABSTRACT FROM AUTHOR] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURED materials KW - EXPONENTIAL functions KW - EMPLOYMENT (Economic theory) KW - ENVIRONMENTAL toxicology KW - ENVIRONMENTAL exposure KW - RADIATION dosimetry KW - characterization KW - Dosimetry KW - in vitro models KW - nanotoxicology KW - physicochemical parameters KW - safety regulation N1 - Accession Number: 109519922; Hussain, Saber M. 1; Email Address: saber.hussain@us.af.mil Warheit, David B. 2 Ng, Sheung P. 2 Comfort, Kristen K. 3 Grabinski, Christin M. 1 Braydich-Stolle, Laura K. 1; Affiliation: 1: Molecular Bioeffects Branch, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: DuPont Haskell Global Centers for Health and Environmental Sciences, Newark Delaware, 19714 3: Department of Chemical and Materials Engineering, University of Dayton, Dayton, Ohio, 45469; Source Info: Sep2015, Vol. 147 Issue 1, p5; Subject Term: NANOSTRUCTURED materials; Subject Term: EXPONENTIAL functions; Subject Term: EMPLOYMENT (Economic theory); Subject Term: ENVIRONMENTAL toxicology; Subject Term: ENVIRONMENTAL exposure; Subject Term: RADIATION dosimetry; Author-Supplied Keyword: characterization; Author-Supplied Keyword: Dosimetry; Author-Supplied Keyword: in vitro models; Author-Supplied Keyword: nanotoxicology; Author-Supplied Keyword: physicochemical parameters; Author-Supplied Keyword: safety regulation; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 12p; Illustrations: 2 Black and White Photographs, 1 Diagram, 1 Chart; Document Type: Article L3 - 10.1093/toxsci/kfv106 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109519922&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - CARUÇO, RODRIGO M.1 T1 - Treating Members of the Military at Least as Well as Inmates and Students: Determining When Military Necessity Requires Infringing Upon Constitutional Rights in Cases Before the Court of Appeals for the Armed Forces. JO - University of Memphis Law Review JF - University of Memphis Law Review J1 - University of Memphis Law Review PY - 2015///Fall2015 Y1 - 2015///Fall2015 VL - 46 IS - 1 CP - 1 M3 - Article SP - 61 EP - 133 SN - 10808582 AB - The article focuses on the existence of the U.S. Court of Appeals for the Armed Forces (CAAF), a highest court in the military criminal justice system, and how it can supervise the military community as actively as it has in both the inmate and student communities. It mentions that the decision of the U.S. Supreme Court in the case Turner v. Safley which explores the interplay between the Constitution and the inmate community. KW - Military crimes KW - Criminal justice administration -- United States KW - Prisoners -- United States -- Law & legislation KW - Turner v. Safley (Supreme Court case) KW - United States. Court of Appeals for the Armed Forces N1 - Accession Number: 111729562; Authors:CARUÇO, RODRIGO M. 1; Affiliations: 1: Captain, United States Air Force; Subject: United States. Court of Appeals for the Armed Forces; Subject: Military crimes; Subject: Criminal justice administration -- United States; Subject: Prisoners -- United States -- Law & legislation; Subject: Turner v. Safley (Supreme Court case); Number of Pages: 73p; Court Cases: Turner v. Safley; 482 U.S. 78 (1987); O'Callahan v. Parker; 395 U.S. 258, 273-74 (1969); Statute:Uniform Code of Military Justice. Pub. L. No. 81-506, 64 Stat. 107 (1950); Jurisdiction:United States; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=111729562&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR ID - 2015-45281-010 AN - 2015-45281-010 AU - Travis, Wendy J. AU - Heyman, Richard E. AU - Slep, Amy M. Smith T1 - Fighting the battle on the home front: Prevention and intervention of child maltreatment for the military family: The U.S. Air Force Family Advocacy Program seeks to provide safe and nurturing homes for children. JF - Child Abuse & Neglect JO - Child Abuse & Neglect JA - Child Abuse Negl Y1 - 2015/09// VL - 47 SP - 114 EP - 123 CY - Netherlands PB - Elsevier Science SN - 0145-2134 AD - Travis, Wendy J., USAFA, 2354 Fairchild Drive, Suite 6L-145, CO, US, 80840 N1 - Accession Number: 2015-45281-010. PMID: 26051785 Partial author list: First Author & Affiliation: Travis, Wendy J.; United States Air Force Academy, CO, US. Release Date: 20151026. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Advocacy; Child Abuse; Intervention; Military Personnel; Prevention. Minor Descriptor: Air Force Personnel; Military Families. Classification: Health & Mental Health Treatment & Prevention (3300); Military Psychology (3800). Population: Human (10). Location: US. Age Group: Childhood (birth-12 yrs) (100). Page Count: 10. Issue Publication Date: Sep, 2015. AB - This article discusses the prevention and intervention of child maltreatment for the military family and how U.S. Air Force Family Advocacy Program seeks to provide safe and nurturing homes for children. For more than 40 years, the Department of Defense (DoD) has established comprehensive policies and programs to address the problem of child maltreatment within military families. From expansive outreach and targeted prevention programs based on sound science, to collaborative and holistic intervention programs and case determination processes, the DoD has developed research-based solutions that better define child maltreatment and ensure consistent processes for the determination of maltreatment. Future Family Advocacy Program (FAP) research activities are in progress to evaluate the effectiveness of FAP service delivery, and to ensure the integration of evidence-informed strategies in every aspect of the FAP. Clearly, the DoD's commitment to fighting child maltreatment is part of an ongoing, coordinated effort to provide safe and nurturing homes for children of America’s men and women in uniform. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - child maltreatment KW - military KW - Air Force KW - active duty KW - prevention KW - intervention KW - 2015 KW - Advocacy KW - Child Abuse KW - Intervention KW - Military Personnel KW - Prevention KW - Air Force Personnel KW - Military Families KW - 2015 DO - 10.1016/j.chiabu.2015.05.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-45281-010&site=ehost-live&scope=site UR - wendy.travis@usafa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2016-05263-020 AN - 2016-05263-020 AU - Ree, Malcolm James AU - Carretta, Thomas R. AU - Teachout, Mark S. T1 - Pervasiveness of dominant general factors in organizational measurement. JF - Industrial and Organizational Psychology: Perspectives on Science and Practice JO - Industrial and Organizational Psychology: Perspectives on Science and Practice JA - Ind Organ Psychol Y1 - 2015/09// VL - 8 IS - 3 SP - 409 EP - 427 CY - United Kingdom PB - Cambridge University Press SN - 1754-9426 SN - 1754-9434 AD - Ree, Malcolm James, School of Business and Leadership, Our Lady of the Lake University, 411 Southwest 24th Street, San Antonio, TX, US, 78207 N1 - Accession Number: 2016-05263-020. Partial author list: First Author & Affiliation: Ree, Malcolm James; Department of Leadership Studies, School of Business and Leadership, Our Lady of the Lake University, San Antonio, TX, US. Other Publishers: Wiley-Blackwell Publishing Ltd. Release Date: 20160218. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Industrial and Organizational Psychology; Measurement; Organizational Behavior; Personality Traits; Psychodynamics. Minor Descriptor: Test Validity; Organizational and Occupational Measures. Classification: Occupational & Employment Testing (2228); Industrial & Organizational Psychology (3600). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 19. Issue Publication Date: Sep, 2015. Copyright Statement: Society for Industrial and Organizational Psychology. 2015. AB - General factors are found in the measurement of many human traits. The concept of dominant general factors (DGFs) is introduced to represent the magnitude of general factors within numerous content domains. DGFs are defined as coming from the largest sources of reliable variance and influencing every variable measuring the construct. Although these factors are most frequently found in measures of cognitive ability, they are not limited to cognitive abilities. Examples are provided for a variety of construct and content domains along with estimates of their DGF percentages, ranging from 38% to 92%. Several reasons for these results are offered, and a call for concerted research is made. Research that ignores DGFs by treating specific factors or constructs within a domain as if they were distinct and uncorrelated can lead to errors in interpretation. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - general factors KW - dominant general factors KW - 2015 KW - Industrial and Organizational Psychology KW - Measurement KW - Organizational Behavior KW - Personality Traits KW - Psychodynamics KW - Test Validity KW - Organizational and Occupational Measures KW - 2015 DO - 10.1017/iop.2015.16 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2016-05263-020&site=ehost-live&scope=site UR - malcolmree@att.net DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-43953-011 AN - 2015-43953-011 AU - Greenlee, Eric T. AU - Funke, Gregory J. AU - Warm, Joel S. AU - Finomore, Victor S. Jr. AU - Patterson, Robert E. AU - Barnes, Laura E. AU - Funke, Matthew E. AU - Vidulich, Michael A. T1 - Effects of stereoscopic depth on vigilance performance and cerebral hemodynamics. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2015/09// VL - 57 IS - 6 SP - 1063 EP - 1075 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Funke, Gregory J., Air Force Research Laboratory, Wright-Patterson Air Force Base, 2510 Fifth Street, OH, US, 45433 N1 - Accession Number: 2015-43953-011. PMID: 25850115 Partial author list: First Author & Affiliation: Greenlee, Eric T.; University of Alabama, Tuscaloosa, AL, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20151019. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cerebral Blood Flow; Performance; Stereoscopic Vision; Vigilance. Classification: Visual Perception (2323). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: Simulator Sickness Questionnaire-Computerized Version; Vigilance Task. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 13. Issue Publication Date: Sep, 2015. Publication History: Accepted Date: Jan 1, 2015; First Submitted Date: Sep 10, 2014. Copyright Statement: Human Factors and Ergonomics Society. 2015. AB - Objective: We tested the possibility that monitoring a display wherein critical signals for detection were defined by a stereoscopic three-dimensional (3-D) image might be more resistant to the vigilance decrement, and to temporal declines in cerebral blood flow velocity (CBFV), than monitoring a display featuring a customary two-dimensional (2-D) image. Background: Hancock has asserted that vigilance studies typically employ stimuli for detection that do not exemplify those that occur in the natural world. As a result, human performance is suboptimal. From this perspective, tasks that better approximate perception in natural environments should enhance performance efficiency. To test that possibility, we made use of stereopsis, an important means by which observers interact with their everyday surroundings. Method: Observers monitored a circular display in which a vertical line was embedded. Critical signals for detection in a 2-D condition were instances in which the line was rotated clockwise from vertical. In a 3-D condition, critical signals were cases in which the line appeared to move outward toward the observer. Results: The overall level of signal detection and the stability of detection over time were greater when observers monitored for 3-D changes in target depth compared to 2-D changes in target orientation. However, the 3-D display did not retard the temporal decline in CBFV. Conclusion: These results provide the initial demonstration that 3-D displays can enhance performance in vigilance tasks. Application: The use of 3-D displays may be productive in augmenting system reliability when operator vigilance is vital. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - vigilance KW - stereopsis KW - depth perception KW - neuroimaging KW - simulator sickness KW - stress KW - 2015 KW - Cerebral Blood Flow KW - Performance KW - Stereoscopic Vision KW - Vigilance KW - 2015 DO - 10.1177/0018720815572468 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-43953-011&site=ehost-live&scope=site UR - Gregory.Funke.1@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Shiffler, Donald A. AU - Tang, Wilkin AU - Jensen, Kevin L. AU - Golby, Ken AU - LaCour, Matthew AU - Petillo, John J. AU - Harris, John R. T1 - Effective field enhancement factor and the influence of emitted space charge. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2015/08/28/ VL - 118 IS - 8 M3 - Article SP - 083302-1 EP - 083302-6 PB - American Institute of Physics SN - 00218979 AB - Although Fowler and Nordheim developed the basics of field emission nearly one century ago with their introduction of the Fowler-Nordheim equation (FNE), the topic continues to attract research interest particularly with the development of new materials that have been proposed as field emitters. The first order analysis of experiments typically relies upon the FNE for at minimum a basic understand of the physical emission process and its parameters of emission. The three key parameters in the FNE are the work function, emission area, and field enhancement factor, all of which can be difficult to determine under experimental conditions. This paper focuses in particular, on the field enhancement factor β. It is generally understood that β provides an indication of the surface roughness or sharpness of a field emitter cathode. However, in this paper, we experimentally and computationally demonstrate that cathodes with highly similar surface morphologies can manifest quite different field enhancements solely through having different emission regions. This fact can cause one to re-interpret results in which a single sharp emitter is proposed to dominate the emission from a field emitting cathode. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIELD emission KW - SPACE charge KW - ELECTRIC field effects KW - CATHODES KW - SURFACE roughness KW - ELECTRON emission N1 - Accession Number: 109252743; Shiffler, Donald A. 1 Tang, Wilkin 1 Jensen, Kevin L. 2 Golby, Ken 3 LaCour, Matthew 3 Petillo, John J. 4 Harris, John R. 5; Affiliation: 1: Air Force Research Laboratory/Directed Energy Directorate, Albuquerque, New Mexico 87117, USA 2: Code 6364, Naval Research Laboratory, Washington, District of Columbia 20375, USA 3: Leidos, Inc., Albuquerque, New Mexico 87117, USA 4: Leidos, Billerica, Massachusetts 01821, USA 5: US Navy Reserve, New Orleans, Louisiana 70143, USA; Source Info: 8/28/2015, Vol. 118 Issue 8, p083302-1; Subject Term: FIELD emission; Subject Term: SPACE charge; Subject Term: ELECTRIC field effects; Subject Term: CATHODES; Subject Term: SURFACE roughness; Subject Term: ELECTRON emission; Number of Pages: 6p; Illustrations: 4 Black and White Photographs, 3 Diagrams, 1 Chart, 1 Graph; Document Type: Article L3 - 10.1063/1.4929364 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109252743&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Niemtzow, Richard C. AU - Soh, Kwang-Sup AU - Kang, Kyung A. AU - Barker, John H. AU - Luo, He Sheng AU - Ohkuma, Moriya T1 - New Developments in the Primo Vascular System: Imaging and Functions with regard to Acupuncture. JO - Evidence-based Complementary & Alternative Medicine (eCAM) JF - Evidence-based Complementary & Alternative Medicine (eCAM) Y1 - 2015/08/26/ VL - 2015 M3 - Article SP - 1 EP - 2 SN - 1741427X KW - ACUPUNCTURE KW - BLOOD-vessels KW - SERIAL publications KW - STAINS & staining (Microscopy) KW - STOMACH -- Tumors N1 - Accession Number: 109322062; Niemtzow, Richard C. 1; Email Address: n5evmd@gmail.com Soh, Kwang-Sup 2; Email Address: kssoh1@gmail.com Kang, Kyung A. 3; Email Address: kyung.kang@louisville.edu Barker, John H. 4; Email Address: jhb121654@gmail.com Luo, He Sheng 5; Email Address: xhnk@163.com Ohkuma, Moriya 6; Email Address: lymph@w5.dion.ne.jp; Affiliation: 1: United States Air Force Acupuncture Center, Malcolm Grow Medical Clinics and Surgery Center, 1050 W. Perimeter Road, Joint Base Andrews, Prince George’s County, MD 20762, USA 2: Nano Primo Research Center, Advanced Institute of Convergence Technology, Seoul National University, Suwon 443-270, Republic of Korea 3: Department of Chemical Engineering, University of Louisville, Louisville, KY 40292, USA 4: Frankfurt Initiative for Regenerative Medicine (FIRM), Experimental Orthopedics and Trauma Surgery, JW Goethe University Hospital, 60528 Frankfurt am Main, Germany 5: Department of Gastroenterology and Hepatology, Renmin Hospital of Wuhan University and Wuhan University Institute of Digestive and Liver Diseases, Wuhan 430-060, China 6: Department of Dermatology, Sakai Hospital, Kinki University, Sakai, Osaka 590-0132, Japan; Source Info: 8/26/2015, Vol. 2015, p1; Subject Term: ACUPUNCTURE; Subject Term: BLOOD-vessels; Subject Term: SERIAL publications; Subject Term: STAINS & staining (Microscopy); Subject Term: STOMACH -- Tumors; Number of Pages: 2p; Document Type: Article L3 - 10.1155/2015/142705 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109322062&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 109322062 T1 - New Developments in the Primo Vascular System: Imaging and Functions with regard to Acupuncture. AU - Niemtzow, Richard C. AU - Soh, Kwang-Sup AU - Kang, Kyung A. AU - Barker, John H. AU - Luo, He Sheng AU - Ohkuma, Moriya Y1 - 2015/08/26/ N1 - Accession Number: 109322062. Language: English. Entry Date: 20151014. Revision Date: 20151014. Publication Type: Article; editorial. Journal Subset: Alternative/Complementary Therapies; Biomedical; Europe; Peer Reviewed; UK & Ireland. NLM UID: 101215021. KW - Blood Vessels KW - Serial Publications KW - Acupuncture KW - Staining and Labeling KW - Stomach Neoplasms SP - 1 EP - 2 JO - Evidence-based Complementary & Alternative Medicine (eCAM) JF - Evidence-based Complementary & Alternative Medicine (eCAM) JA - EVID BASED COMPLEMENT ALTERN MED VL - 2015 CY - New York, New York PB - Hindawi Publishing Corporation SN - 1741-427X AD - United States Air Force Acupuncture Center, Malcolm Grow Medical Clinics and Surgery Center, 1050 W. Perimeter Road, Joint Base Andrews, Prince George’s County, MD 20762, USA AD - Nano Primo Research Center, Advanced Institute of Convergence Technology, Seoul National University, Suwon 443-270, Republic of Korea AD - Department of Chemical Engineering, University of Louisville, Louisville, KY 40292, USA AD - Frankfurt Initiative for Regenerative Medicine (FIRM), Experimental Orthopedics and Trauma Surgery, JW Goethe University Hospital, 60528 Frankfurt am Main, Germany AD - Department of Gastroenterology and Hepatology, Renmin Hospital of Wuhan University and Wuhan University Institute of Digestive and Liver Diseases, Wuhan 430-060, China AD - Department of Dermatology, Sakai Hospital, Kinki University, Sakai, Osaka 590-0132, Japan DO - 10.1155/2015/142705 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109322062&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Kramb, Ryan C. AU - Buskohl, Philip R. AU - Dalton, Matthew J. AU - Vaia, Richard A. T1 - Belousov-Zhabotinsky Hydrogels: Relationship between Hydrogel Structure and Mechanical Response. JO - Chemistry of Materials JF - Chemistry of Materials Y1 - 2015/08/25/ VL - 27 IS - 16 M3 - Article SP - 5782 EP - 5790 SN - 08974756 AB - The novel chemo-mechanical feedback within autonomic Belousov-Zhabotinsky (BZ) hydrogels mimics the complex adaptivity found in natural systems and inspires soft device concepts for chemical computing, sensing, and actuation. A quantitative relationship between the dynamic response, strain, BZ reagents, and hydrogel constituents, however, is still evolving due to a limited material suite. Using a modular synthesis strategy for free-radical BZ-catalyst monomers, we compare the impact of cross-linker, catalyst, and total polymer concentration on the cyclic strain of PNIPAm- and PAAm-based BZ hydrogels. The oscillator strain of the hydrogel in the BZ solution relative to the difference between equilibrium swelling of the fully oxidized and reduced states highlights the trade-off between BZ reaction kinetics, hydrogel elasticity, and catalyst concentration. For a PNIPAm-based BZ gel, a maximum strain of 20% occurs at a total polymer and [Ru] concentration of 4.8 ± 0.5 µg/mm³ and 1.5 mM due to a complementary balance of Ru content, extended BZ period (33 ± 8 min), and modest network cross-linking. The modular synthesis approach enables formulation studies to identify the BZ hydrogel architecture that provides maximum strain response and robustness, as well as elucidating the interrelationship between hydrogel structure, composition, and reaction conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemistry of Materials is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROGELS KW - BELOUSOV-Zhabotinskii reaction KW - CHEMICAL structure KW - CHEMICAL senses KW - ACTUATORS KW - CHEMICAL tests & reagents N1 - Accession Number: 109138565; Kramb, Ryan C. 1,2 Buskohl, Philip R. 1 Dalton, Matthew J. 1 Vaia, Richard A. 1; Email Address: richard.vaia@us.af.mil; Affiliation: 1: AFRL/RX Materials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States 2: UES, Inc, Dayton, Ohio 45432, United States; Source Info: Aug2015, Vol. 27 Issue 16, p5782; Subject Term: HYDROGELS; Subject Term: BELOUSOV-Zhabotinskii reaction; Subject Term: CHEMICAL structure; Subject Term: CHEMICAL senses; Subject Term: ACTUATORS; Subject Term: CHEMICAL tests & reagents; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1021/acs.chemmater.5b02412 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109138565&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wiens, Justin P. AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Viggiano, Albert A. T1 - Electron attachment and positive ion chemistry of monohydrogenated fluorocarbon radicals. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2015/08/21/ VL - 143 IS - 7 M3 - Article SP - 1 EP - 9 PB - American Institute of Physics SN - 00219606 AB - Rate coefficients and product branching fractions for electron attachment and for reaction with Ar+ are measured over the temperature range 300-585 K for three monohydrogenated fluorocarbon (HFC) radicals (CF3CHF, CHF2CF2, and CF3CHFCF2), as well as their five closed-shell precursors (1-HC2F4I, 2-HC2F4I, 2-HC2F4Br, 1-HC3F6I, 2-HC3F6Br). Attachment to the HFC radicals is always fairly inefficient (between 0.1% and 10% of the Vogt-Wannier capture rate), but generally faster than attachment to analogous perfluorinated carbon radicals. The primary products in all cases are HF-loss to yield CnFm-1- anions, with only a minor branching to F- product. In all cases the temperature dependences are weak. Attachment to the precursor halocarbons is near the capture rate with a slight negative temperature dependence in all cases except for 2-HC2F4Br, which is ~10% efficient at 300 K and becomes more efficient, approaching the capture rate at higher temperatures. All attachment kinetics are successfully reproduced using a kinetic modeling approach. Reaction of the HFC radicals with Ar+ proceeds at or near the calculated collisional rate coefficient in all cases, yielding a wide variety of product ions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUOROCARBONS KW - CATIONS KW - RADICALS (Chemistry) KW - HYDROGENATION KW - RATE coefficients (Chemistry) KW - BRANCHING ratios (Nuclear physics) KW - ARGON N1 - Accession Number: 109093350; Wiens, Justin P. 1 Shuman, Nicholas S. 1 Miller, Thomas M. 1 Viggiano, Albert A. 1; Email Address: afrl.rvborgmailbox@kirtland.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117, USA; Source Info: 2015, Vol. 143 Issue 7, p1; Subject Term: FLUOROCARBONS; Subject Term: CATIONS; Subject Term: RADICALS (Chemistry); Subject Term: HYDROGENATION; Subject Term: RATE coefficients (Chemistry); Subject Term: BRANCHING ratios (Nuclear physics); Subject Term: ARGON; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 9p; Illustrations: 5 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.4928691 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109093350&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sablon, K. AU - Li, Y. AU - Vagidov, N. AU - Mitin, V. AU - Little, J. W. AU - Hier, H. AU - Sergeev, A. T1 - GaAs quantum dot solar cell under concentrated radiation. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2015/08/17/ VL - 107 IS - 7 M3 - Article SP - 073901-1 EP - 073901-5 PB - American Institute of Physics SN - 00036951 AB - Effects of concentrated solar radiation on photovoltaic performance are investigated in well-developed GaAs quantum dot (QD) solar cells with 1-Sun efficiencies of 18%-19%. In these devices, the conversion processes are enhanced by nanoscale potential barriers and/or AlGaAs atomically thin barriers around QDs, which prevent photoelectron capture to QDs. Under concentrated radiation, the short circuit current increases proportionally to the concentration and the open circuit voltage shows the logarithmic increase. In the range up to hundred Suns, the contributions of QDs to the photocurrent are proportional to the light concentration. The ideality factors of 1.1-1.3 found from the VOC-Sun characteristics demonstrate effective suppression of recombination processes in barrier-separated QDs. The conversion efficiency shows the wide maximum in the range of 40-90 Suns and reaches 21.6%. Detailed analysis of I-V-Sun characteristics shows that at low intensities, the series resistance decreases inversely proportional to the concentration and, at ~40 Suns, reaches the plateau determined mainly by the front contact resistance. Improvement of contact resistance would increase efficiency to above 24% at thousand Suns. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM dots KW - GALLIUM arsenide KW - SOLAR radiation KW - SOLAR cells KW - NANOELECTROMECHANICAL systems KW - PHOTOCURRENTS KW - CONTACT resistance (Materials science) N1 - Accession Number: 109042689; Sablon, K. 1 Li, Y. 2 Vagidov, N. 2,3 Mitin, V. 2 Little, J. W. 1 Hier, H. 1 Sergeev, A. 1,2; Affiliation: 1: U.S. Army Research Laboratory, Adelphi, Maryland 20783, USA 2: EE Department, University at Buffalo - SUNY, Buffalo, New York 14260, USA 3: U.S. Air Force Research Laboratory, Kirtland AFB, Albuquerque, New Mexico 87117, USA; Source Info: 2015, Vol. 107 Issue 7, p073901-1; Subject Term: QUANTUM dots; Subject Term: GALLIUM arsenide; Subject Term: SOLAR radiation; Subject Term: SOLAR cells; Subject Term: NANOELECTROMECHANICAL systems; Subject Term: PHOTOCURRENTS; Subject Term: CONTACT resistance (Materials science); NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; Number of Pages: 5p; Illustrations: 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.4928669 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109042689&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiang, Jie AU - Pachter, Ruth AU - Mehmood, Faisal AU - Islam, Ahmad E. AU - Maruyama, Benji AU - Boeckl, John J. T1 - A Raman spectroscopy signature for characterizing defective single-layer graphene: Defect-induced I(D)/I(D′) intensity ratio by theoretical analysis. JO - Carbon JF - Carbon Y1 - 2015/08/15/ VL - 90 M3 - Article SP - 53 EP - 62 SN - 00086223 AB - To distinguish defects in defective single-layer graphene (DSLG), we developed a method combining first principles density functional theory and tight-binding that quantifies defect-induced Raman intensities. Analysis of defect potentials for defects with vacancies and/or bond rotation has shown that on-site variation dominates the scattering, and also quantified effects of oxygen adsorption. Defect potentials for DSLG were subsequently used in calculation of the electron–defect matrix elements and Raman intensities. I ( D )/ I ( D ′) intensity ratios, dependent on defect topology and oxygen impurity adsorption, were elucidated for mono-vacancy, double-vacancy, Stone–Wales, and so-called 555-777 and 5555-6-7777 point defects in single-layer graphene. The results demonstrated for the first time the ability to distinguish between these defect types, also as dependent of oxygen adsorption, and were found consistent with a measured value for vacancies. Importantly, our theoretical prediction of the I ( D )/ I ( D ′) Raman intensity signature metric can assist in experimental characterization of defective realistic graphene samples for any defect type. Finally, analytical analysis of the angular dependence of the electron–defect scattering matrix elements revealed a node effect in intra-valley backscattering but not in inter-valley backscattering, rationalizing the observation that the D ′ band intensity is mostly weaker than that of the D band. [ABSTRACT FROM AUTHOR] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN spectroscopy KW - GRAPHENE KW - CRYSTAL defects KW - DENSITY functional theory KW - OXYGEN KW - ADSORPTION KW - BACKSCATTERING N1 - Accession Number: 102696843; Jiang, Jie 1 Pachter, Ruth 1; Email Address: ruth.pachter@us.af.mil Mehmood, Faisal 1 Islam, Ahmad E. 1 Maruyama, Benji 1 Boeckl, John J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Aug2015, Vol. 90, p53; Subject Term: RAMAN spectroscopy; Subject Term: GRAPHENE; Subject Term: CRYSTAL defects; Subject Term: DENSITY functional theory; Subject Term: OXYGEN; Subject Term: ADSORPTION; Subject Term: BACKSCATTERING; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.carbon.2015.03.049 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102696843&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kaspi, Ron AU - Lu, Chunte A. AU - Newell, Tim C. AU - Yang, Chi AU - Luong, Sanh T1 - GaSb-based >3 µm laser diodes grown with up to 2.4% compressive strain in the quantum wells using strain compensation. JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2015/08/15/ VL - 424 M3 - Article SP - 24 EP - 27 SN - 00220248 AB - We describe the growth of GaSb-based diode lasers with quinary AlInGaAsSb alloy waveguide/barriers and highly strained InGaAsSb type-I quantum wells, designed to emit at ~3.2 µm at room temperature. To increase the compressive strain in the QWs above the pseudomorphic limit, we employ strain compensation in which the lower portion of the quinary alloy waveguide is slightly arsenic-rich as compared to the lattice-matched composition. Using this scheme, we fabricated a set of laser devices with incrementally increasing compressive strain in the quantum wells. With compressive strain reaching as high as ~2.4%, the device performance corroborates the notion that adding compressive strain in the quantum wells helps improve hole confinement and suppresses carrier leakage during operation near room temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM compounds KW - SEMICONDUCTOR lasers KW - CRYSTAL growth KW - COMPRESSIVE strength KW - STRAINS & stresses (Mechanics) KW - QUANTUM chemistry KW - Antimonides KW - Laser diodes KW - Molecular beam epitaxy KW - Semiconducting III–V materials N1 - Accession Number: 103087546; Kaspi, Ron 1; Email Address: ron.kaspi@us.af.mil Lu, Chunte A. 1 Newell, Tim C. 1 Yang, Chi 1 Luong, Sanh 1; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, AFRL/RDLTD, Albuquerque, NM 87117, USA; Source Info: Aug2015, Vol. 424, p24; Subject Term: GALLIUM compounds; Subject Term: SEMICONDUCTOR lasers; Subject Term: CRYSTAL growth; Subject Term: COMPRESSIVE strength; Subject Term: STRAINS & stresses (Mechanics); Subject Term: QUANTUM chemistry; Author-Supplied Keyword: Antimonides; Author-Supplied Keyword: Laser diodes; Author-Supplied Keyword: Molecular beam epitaxy; Author-Supplied Keyword: Semiconducting III–V materials; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jcrysgro.2015.04.043 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103087546&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bjaalie, L. AU - Verma, A. AU - Himmetoglu, B. AU - Janotti, A. AU - Raghavan, S. AU - Protasenko, V. AU - Steenbergen, E. H. AU - Jena, D. AU - Stemmer, S. AU - Van de Walle, C. G. T1 - Determination of the Mott-Hubbard gap in GdTiO3. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2015/08/15/ VL - 92 IS - 8 M3 - Article SP - 1 EP - 5 SN - 10980121 AB - The band gaps of rare-earth titanates are commonly reported to be 0.2-0.7 eV. These values are based on optical reflectivity measurements, from which the onset of optical absorption is derived. Here we report experimental and theoretical results on GdTiO3 (GTO) indicating that the gap is significantly larger. Photoluminescence (PL) measurements show a strong peak near 1.8 eV, consistent with an observed onset in PL excitation (PLE) at about the same energy. First-principles calculations, based either on density-functional theory (DFT) with a hybrid functional or on DFT+U, consistently show that the gap is close to 2 eV. We also propose an interpretation of the previously reported optical absorption spectra. Given the similarities in electronic structure between the rare-earth titanates, our results for GTO have repercussions for the other members of the series. The results also affect the design of complex-oxide heterostructures involving these materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HUBBARD model KW - ENERGY gaps (Physics) KW - RARE earth metals KW - TITANATES KW - LIGHT absorption KW - GADOLINIUM compounds KW - PHOTOLUMINESCENCE -- Measurement KW - ELECTRONIC excitation N1 - Accession Number: 110121857; Bjaalie, L. 1 Verma, A. 2 Himmetoglu, B. 1 Janotti, A. 1 Raghavan, S. 1 Protasenko, V. 2 Steenbergen, E. H. 3 Jena, D. 2 Stemmer, S. 1 Van de Walle, C. G. 1; Affiliation: 1: Materials Department, University of California Santa Barbara, California, USA 2: Department of Electrical Engineering, University of Notre Dame, South Bend, Indiana, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio, USA; Source Info: Aug2015, Vol. 92 Issue 8, p1; Subject Term: HUBBARD model; Subject Term: ENERGY gaps (Physics); Subject Term: RARE earth metals; Subject Term: TITANATES; Subject Term: LIGHT absorption; Subject Term: GADOLINIUM compounds; Subject Term: PHOTOLUMINESCENCE -- Measurement; Subject Term: ELECTRONIC excitation; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 5p; Document Type: Article L3 - 10.1103/PhysRevB.92.085111 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110121857&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ge, Wen AU - Li, Zhiang AU - Lei, Zhiwei AU - Chen, Tong AU - Fu, Zhengping AU - Peng, Ranran AU - Liu, Min AU - Lu, Yalin T1 - Synthesis of hexagonal phase Gd2O2CO3:Yb3+, Er3+ upconversion nanoparticles via SiO2 coating and Nd3+ doping. JO - CrystEngComm JF - CrystEngComm Y1 - 2015/08/14/ VL - 17 IS - 30 M3 - Article SP - 5702 EP - 5709 SN - 14668033 AB - By SiO2 shell coating and Nd3+ doping, layer-structured hexagonal phase Gd2O2CO3:Yb3+, Er3+ nanoparticles were synthesized successfully through a homogeneous precipitation method. The detailed mechanism was investigated and the results indicate that the SiO2 shell and Nd3+ doping ions can effectively prevent hexagonal phase Gd2O2CO3 from decomposing into cubic phase Gd2O3 during heat treatment, because the SiO2 shell limits the diffusion of CO2 gas and the Nd3+ doping increases the decomposition temperature of Gd2O2CO3. Compared with non-layer-structured GdVO4:20%Yb3+, 2%Er3+, 4%Nd3+ particles with similar diameters and morphologies and lower phonon energies, layer-structured Gd2O2CO3:20%Yb3+, 2%Er3+, 4%Nd3+/SiO2 hexagonal phase particles show much a stronger upconversion emission, suggesting that layer-structured materials are more appropriate as upconversion hosts. Furthermore, the paramagnetic properties of Gd2O2CO3:Yb3+, Er3+, Nd3+/SiO2 nanoparticles were also demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of CrystEngComm is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON oxide KW - NANOPARTICLES KW - NANOSTRUCTURED materials KW - ELECTROLYSIS KW - MOLECULAR vibration N1 - Accession Number: 108531403; Ge, Wen 1 Li, Zhiang 1 Lei, Zhiwei 1 Chen, Tong 1 Fu, Zhengping 1,2 Peng, Ranran 1,2 Liu, Min 1,2 Lu, Yalin 1,2,3,4; Affiliation: 1: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, PR China 2: Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei 230026, PR China 3: Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, PR China 4: Laser and Optics Research Center, Physics Department, United States Air Force Academy, Colorado 80840, USA; Source Info: 8/14/2015, Vol. 17 Issue 30, p5702; Subject Term: SILICON oxide; Subject Term: NANOPARTICLES; Subject Term: NANOSTRUCTURED materials; Subject Term: ELECTROLYSIS; Subject Term: MOLECULAR vibration; Number of Pages: 8p; Document Type: Article L3 - 10.1039/c5ce00869g UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108531403&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - ABST AU - Pinchak, Matthew AU - Ombrello, Timothy AU - Carter, Campbell AU - Gutmark, Ephraim AU - Katta, Viswanath T1 - The effects of hydrodynamic stretch on the flame propagation enhancement of ethylene by addition of ozone. JO - Philosophical Transactions of the Royal Society A: Mathematical, Physical & Engineering Sciences JF - Philosophical Transactions of the Royal Society A: Mathematical, Physical & Engineering Sciences Y1 - 2015/08/13/ VL - 373 IS - 2048 M3 - Abstract SP - 9 EP - 9 SN - 1364503X AB - The effect of O3 on C2H4/synthetic-air flame propagation at sub-atmospheric pressure was investigated through detailed experiments and simulations. A Hencken burner provided an ideal platform to interrogate flame speed enhancement, producing a steady, laminar, nearly one-dimensional, minimally curved, weakly stretched, and nearly adiabatic flame that could be accurately compared with simulations. The experimental results showed enhancement of up to 7.5% in flame speed for 11 000 ppm of O3 at stoichiometric conditions. Significantly, the axial stretch rate was also found to affect enhancement. Comparison of the flames for a given burner exit velocity resulted in the enhancement increasing almost 9% over the range of axial stretch rates that was investigated. Two-dimensional simulations agreed well with the experiments in terms of flame speed, as well as the trends of enhancement. Rate of production analysis showed that the primary pathway for O3 consumption was through reaction with H, leading to early heat release and increased production of OH. Higher flame stretch rates resulted in increased flux through the H+O3 reaction to provide increased enhancement, due to the thinning of the flame that accompanies higher stretch, and thus results in decreased distance for the H to diffuse before reacting with O3. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Transactions of the Royal Society A: Mathematical, Physical & Engineering Sciences is the property of Royal Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA (Ionized gases) KW - COMBUSTION KW - OZONE KW - ABSTRACTS KW - combustion KW - flame speed enhancement KW - Hencken flame KW - ozone KW - plasma KW - sub-atmospheric pressure N1 - Accession Number: 108555931; Pinchak, Matthew 1 Ombrello, Timothy 2 Carter, Campbell 2 Gutmark, Ephraim 1 Katta, Viswanath 3; Affiliation: 1: Department of Aerospace Engineering, University of Cincinnati, Cincinnati, OH, USA 2: Aerospace Systems Directorate, US Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA 3: Innovative Scientific Solutions, Inc., Dayton, OH, USA; Source Info: 8/13/2015, Vol. 373 Issue 2048, p9; Subject Term: PLASMA (Ionized gases); Subject Term: COMBUSTION; Subject Term: OZONE; Subject Term: ABSTRACTS; Author-Supplied Keyword: combustion; Author-Supplied Keyword: flame speed enhancement; Author-Supplied Keyword: Hencken flame; Author-Supplied Keyword: ozone; Author-Supplied Keyword: plasma; Author-Supplied Keyword: sub-atmospheric pressure; Number of Pages: 1p; Document Type: Abstract; Full Text Word Count: 315 L3 - 10.1098/rsta.2014.0339 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108555931&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gumbs, Godfrey AU - Iurov, Andrii AU - Danhong Huang AU - Wei Pan T1 - Tunable surface plasmon instability leading to emission of radiation. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2015/08/07/ VL - 118 IS - 5 M3 - Article SP - 054303-1 EP - 054303-10 PB - American Institute of Physics SN - 00218979 AB - We propose a new approach for energy conversion from a dc electric field to tunable terahertz emission based on hybrid semiconductors by combining two-dimensional (2D) crystalline layers and a thick conducting material with possible applications for chemical analysis, security scanning, medical (single-molecule) imaging, and telecommunications. The hybrid nano-structure may consist of a single or pair of sheets of graphene, silicene, or a 2D electron gas. When an electric current is passed through a 2D layer, we discover that two low-energy plasmon branches exhibit a characteristic loop in their dispersion before they merge into an unstable region beyond a critical wave vector qc. This finite qc gives rise to a wavenumber cutoff in the emission dispersion of the surface plasmon induced instability and emission of radiation (spiler). However, there is no instability for a single driven layer far from the conductor, and the instability of an isolated pair of 2D layers occurs without a wavenumber cutoff. The wavenumber cutoff is found to depend on the conductor electron density, layer separation, distances of layers from the conductor surface, and the driving-current strength. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMONS (Physics) KW - RADIATION KW - ENERGY conversion KW - ELECTRIC fields KW - SEMICONDUCTORS N1 - Accession Number: 108805829; Gumbs, Godfrey 1,2 Iurov, Andrii 1,3; Email Address: aiurov@chtm.unm.edu Danhong Huang 4 Wei Pan 5; Affiliation: 1: Department of Physics and Astronomy, Hunter College of the City University of New York, 695 Park Avenue, New York, New York 10065, USA 2: Donostia International Physics Center (DIPC), P de Manuel Lardizabal, 4, 20018 San Sebastian, Basque Country, Spain 3: Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87106, USA 4: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA 5: Sandia National Laboratory, Albuquerque, New Mexico 87185, USA; Source Info: 8/7/2015, Vol. 118 Issue 5, p054303-1; Subject Term: PLASMONS (Physics); Subject Term: RADIATION; Subject Term: ENERGY conversion; Subject Term: ELECTRIC fields; Subject Term: SEMICONDUCTORS; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 10p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.4927101 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108805829&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grier, Benjamin AU - Figliola, Richard AU - Alyanak, Edward AU - Camberos, José T1 - Discontinuous Solutions Using the Method of Manufactured Solutions on Finite Volume Solvers. JO - AIAA Journal JF - AIAA Journal Y1 - 2015/08// VL - 53 IS - 8 M3 - Article SP - 2369 EP - 2378 SN - 00011452 AB - When applying the method of manufactured solutions on computational fluid dynamic software, it is a requirement that all solutions be continuous on the computational domain. This stipulation is limiting for the verification and validation of numerical solutions where discontinuities are frequent. In an effort to adapt the standard method of manufactured solutions procedure, we propose a piecewise approach for modeling solutions with discontinuities. Linearly and quadratically exact transformations are used for determining the exact solutions and source terms for cells split by discontinuities. Upwind manufactured solutions are initialized and a least squares fit is used to solve for solutions downwind of the discontinuity such that the Rankine-Hugoniot conditions are satisfied. The codes used throughout this research are finite volume, 1st and 2nd order, inviscid schemes combined with uniform structured grids. This study shows that a modified method of manufactured solutions procedure can be performed with fully general discontinuous solutions yielding 1st order convergences typically associated with shocks. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FINITE volume method KW - COMPUTATIONAL fluid dynamics KW - DISCRETIZATION methods KW - GAUSSIAN processes KW - FLUID dynamics KW - DIFFERENTIAL equations -- Numerical solutions N1 - Accession Number: 108685226; Grier, Benjamin 1; Email Address: bengrier@gmail.com Figliola, Richard 1; Email Address: fgliola@clemson.edu Alyanak, Edward 2; Email Address: Edward.Alyanak@wpafb.af.mil Camberos, José 2; Email Address: Jose.camberos@wpafb.af.mil; Affiliation: 1: Clemson University, Clemson, South Carolina 29634 2: U.S. Air Force Research Laboratory, Dayton, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Aug2015, Vol. 53 Issue 8, p2369; Subject Term: FINITE volume method; Subject Term: COMPUTATIONAL fluid dynamics; Subject Term: DISCRETIZATION methods; Subject Term: GAUSSIAN processes; Subject Term: FLUID dynamics; Subject Term: DIFFERENTIAL equations -- Numerical solutions; Number of Pages: 10p; Document Type: Article L3 - 10.2514/1.J053725 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108685226&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harris, J. R. AU - Jensen, K. L. AU - Shiffler, D. A. T1 - Dependence of optimal spacing on applied field in ungated field emitter arrays. JO - AIP Advances JF - AIP Advances Y1 - 2015/08// VL - 5 IS - 8 M3 - Article SP - 1 EP - 7 SN - 21583226 AB - In ungated field emitter arrays, the field enhancement factor β of each emitter tip is reduced below the value it would have in isolation due to the presence of adjacent emitters, an effect known as shielding or screening. Reducing the distance b between emitters increases the density of emission sites, but also reduces the emission per site, leading to the existence of an optimal spacing that maximizes the array current. Most researchers have identified that this optimal spacing is comparable to the emitter height h, although there is disagreement about the exact optimization. Here, we develop a procedure to determine the dependence of this optimal spacing on the applied electric field. It is shown that the nature of this dependence is governed by the shape of the β(b) curve, and that for typical curves, the optimal value of the emitter spacing b decreases as the applied field increases. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Advances is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIELD emitter arrays KW - RESEARCH KW - ELECTRIC field effects KW - CURRENT density (Electromagnetism) KW - SURFACE area KW - ASYMPTOTES KW - ELECTROMAGNETIC radiation N1 - Accession Number: 109254593; Harris, J. R. 1 Jensen, K. L. 2 Shiffler, D. A. 3; Affiliation: 1: U.S. Navy Reserve, Navy Operational Support Center New Orleans, New Orleans, LA 70143, USA 2: Code 6364, Naval Research Laboratory, Washington, DC 20375, USA 3: Directed Energy Directorate, Air Force Research Laboratory, Albuquerque, NM 87117, USA; Source Info: 2015, Vol. 5 Issue 8, p1; Subject Term: FIELD emitter arrays; Subject Term: RESEARCH; Subject Term: ELECTRIC field effects; Subject Term: CURRENT density (Electromagnetism); Subject Term: SURFACE area; Subject Term: ASYMPTOTES; Subject Term: ELECTROMAGNETIC radiation; Number of Pages: 7p; Document Type: Article L3 - 10.1063/1.4929983 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109254593&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Allen, Kenneth W. AU - Farahi, Navid AU - Li, Yangcheng AU - Limberopoulos, Nicholaos I. AU - Walker, Dennis E. AU - Urbas, Augustine M. AU - Liberman, Vladimir AU - Astratov, Vasily N. T1 - Super-resolution microscopy by movable thin-films with embedded microspheres: Resolution analysis. JO - Annalen der Physik JF - Annalen der Physik Y1 - 2015/08// VL - 527 IS - 7/8 M3 - Article SP - 513 EP - 522 SN - 00033804 AB - Microsphere-assisted imaging has emerged as an extraordinary simple technique of obtaining optical super-resolution. This work addresses two central problems in developing this technology: i) methodology of the resolution measurements and ii) limited field-of-view provided by each sphere. It is suggested that a standard method of resolution analysis in far-field microscopy based on convolution with the point-spread function can be extended into the super-resolution area. This allows developing a unified approach to resolution measurements, which can be used for comparing results obtained by different techniques. To develop the surface scanning functionality, the high-index ( n ∼ 2) barium titanate glass microspheres were embedded in polydimethylsiloxane (PDMS) thin-films. It is shown that such films adhere to the surface of nanoplasmonic structures so that the tips of embedded spheres experience the objects' optical near-fields. Based on rigorous criteria, the resolution ∼ λ/6- λ/7 (where λ is the illumination wavelength) is demonstrated for arrays of Au dimers and bowties. Such films can be translated along the surface of investigated samples after liquid lubrication. It is shown that just after lubrication the resolution is diffraction limited, however the super-resolution gradually recovers as the lubricant evaporates. [ABSTRACT FROM AUTHOR] AB - Copyright of Annalen der Physik is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - HIGH resolution electron microscopy KW - MICROSPHERES KW - POLYDIMETHYLSILOXANE KW - DIFFRACTION patterns N1 - Accession Number: 108877041; Allen, Kenneth W. 1,2 Farahi, Navid 1,2 Li, Yangcheng 1 Limberopoulos, Nicholaos I. 2 Walker, Dennis E. 2 Urbas, Augustine M. 3 Liberman, Vladimir 4 Astratov, Vasily N. 1,2; Affiliation: 1: Department of Physics and Optical Science, Center for Optoelectronics and Optical Communications, University of North Carolina at Charlotte 2: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB 4: Lincoln Laboratory, Massachusetts Institute of Technology; Source Info: Aug2015, Vol. 527 Issue 7/8, p513; Subject Term: THIN films; Subject Term: HIGH resolution electron microscopy; Subject Term: MICROSPHERES; Subject Term: POLYDIMETHYLSILOXANE; Subject Term: DIFFRACTION patterns; Number of Pages: 10p; Document Type: Article L3 - 10.1002/andp.201500194 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108877041&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gibson, Glen R. AU - Campbell, James B. AU - Zipper, Carl E. T1 - Sociopolitical influences on cropland area change in Iraq, 2001–2012. JO - Applied Geography JF - Applied Geography Y1 - 2015/08// VL - 62 M3 - Article SP - 339 EP - 346 SN - 01436228 AB - Iraq has experienced significant agricultural land use changes throughout its history, including recent changes initiated by the 2003 US-led military invasion, the end of United Nations' economic sanctions and the onset of overt domestic conflict. Conflict and sociopolitical forces are important drivers of land use/land cover change and often have disproportionate impacts on agricultural systems. However, there has been little research to investigate recent changes in agricultural land use/land cover in Iraq over the recent tumultuous period that has included war and the transition of its political system from a dictatorship to an emerging but beleaguered democracy. Our objectives were to (1) determine if cropland area in Iraq changed significantly between 2001 and 2012, (2) identify regional patterns of cropland area change, and (3) identify sociopolitical forces driving those changes. We used MODIS Land Cover Product yearly data to quantify the amount of land cover dedicated to croplands. We regressed cropland area (ha) on time (2001, 2002, 2003,…) and years with drought influence (yes, no). The results revealed significant changes in cropland area for Iraq as a whole, with cropland area decreasing over 30,000 ha per year. Regionally, there were significant decreases in the Kurdish Autonomous Region and central Iraq, and initial increases in the southern marshlands followed by decreases related to drought. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Geography is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAND use KW - FARMS KW - IRAQ War, 2003-2011 KW - POLITICAL systems KW - DICTATORSHIP KW - Agriculture KW - Cultivation KW - Food imports KW - Land use/land cover change KW - MODIS KW - UNITED Nations N1 - Accession Number: 108845289; Gibson, Glen R. 1; Email Address: ggibson@vt.edu Campbell, James B. 2; Email Address: jayhawk@vt.edu Zipper, Carl E. 3; Email Address: czip@vt.edu; Affiliation: 1: Department of Economics and Geosciences, United States Air Force Academy, 2354 Fairchild Dr, Suite 6K118, USAFA, CO 80840, USA 2: Department of Geography, Virginia Tech, 115 Major Williams Hall, Blacksburg, VA 24061, USA 3: Department of Crop and Soil Environmental Sciences, Virginia Tech, 363 Smyth Hall, Blacksburg, VA 24061, USA; Source Info: Aug2015, Vol. 62, p339; Subject Term: LAND use; Subject Term: FARMS; Subject Term: IRAQ War, 2003-2011; Subject Term: POLITICAL systems; Subject Term: DICTATORSHIP; Author-Supplied Keyword: Agriculture; Author-Supplied Keyword: Cultivation; Author-Supplied Keyword: Food imports; Author-Supplied Keyword: Land use/land cover change; Author-Supplied Keyword: MODIS; Company/Entity: UNITED Nations; NAICS/Industry Codes: 919110 International and other extra-territorial public administration; NAICS/Industry Codes: 928120 International Affairs; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.apgeog.2015.05.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108845289&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sahu, Sushant AU - Cao, Li AU - Meziani, Mohammed J. AU - Bunker, Christopher E. AU - Shiral Fernando, K.A. AU - Wang, Ping AU - Sun, Ya-Ping T1 - Carbon dioxide photoconversion driven by visible-light excitation of small carbon nanoparticles in various configurations. JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2015/08// VL - 634 M3 - Article SP - 122 EP - 128 SN - 00092614 AB - In the CO 2 sequestration, a desirable yet challenging option is the photocatalytic conversion with solar irradiation. While nanoscale semiconductors have been at the center of attention in the development of suitable photocatalysts for the CO 2 conversion, carbon nanoparticles have recently emerged as a new class of photoactive materials for harvesting visible photons to drive photocatalytic processes. Results from this study demonstrate that aqueous suspended bare carbon nanoparticles could be excited with visible light to photocatalytically convert CO 2 into formic acid, with the performance competitive to that of widely used semiconductor nanoparticles. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON sequestration KW - PHOTOCATALYSIS KW - NANOPARTICLES KW - VISIBLE spectra KW - SOLAR radiation KW - SEMICONDUCTORS N1 - Accession Number: 108700454; Sahu, Sushant 1 Cao, Li 1 Meziani, Mohammed J. 1 Bunker, Christopher E. 2; Email Address: christopher.bunker@wpafb.af.mil Shiral Fernando, K.A. 3 Wang, Ping 1 Sun, Ya-Ping 1; Email Address: syaping@clemson.edu; Affiliation: 1: Department of Chemistry and Laboratory for Emerging Materials and Technology, Clemson University, Clemson, SC 29634, USA 2: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433, USA 3: University of Dayton Research Institute, Sensors Technology Office, Dayton, OH 45469, USA; Source Info: Aug2015, Vol. 634, p122; Subject Term: CARBON sequestration; Subject Term: PHOTOCATALYSIS; Subject Term: NANOPARTICLES; Subject Term: VISIBLE spectra; Subject Term: SOLAR radiation; Subject Term: SEMICONDUCTORS; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.cplett.2015.05.073 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108700454&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schuren, Jay C. AU - Shade, Paul A. AU - Bernier, Joel V. AU - Li, Shiu Fai AU - Blank, Basil AU - Lind, Jonathan AU - Kenesei, Peter AU - Lienert, Ulrich AU - Suter, Robert M. AU - Turner, Todd J. AU - Dimiduk, Dennis M. AU - Almer, Jonathan T1 - New opportunities for quantitative tracking of polycrystal responses in three dimensions. JO - Current Opinion in Solid State & Materials Science JF - Current Opinion in Solid State & Materials Science Y1 - 2015/08// VL - 19 IS - 4 M3 - Article SP - 235 EP - 244 SN - 13590286 AB - An important advance in understanding the mechanics of solids over the last 50 years has been development of a suite of models that describe the performance of engineering materials while accounting for internal fluctuations and anisotropies (ex., anisotropic response of grains) over a hierarchy of length scales. Only limited engineering adoption of these tools has occurred, however, because of the lack of measured material responses at the length scales where the models are cast. Here, we demonstrate an integrated experimental capability utilizing high energy X-rays that provides an in situ , micrometer-scale probe for tracking evolving microstructure and intergranular stresses during quasi-static mechanical testing. We present first-of-a-kind results that show an unexpected evolution of the intergranular stresses in a titanium alloy undergoing creep deformation. We also discuss the expectation of new discoveries regarding the underlying mechanisms of strength and damage resistance afforded by this rapidly developing X-ray microscopy technique. [ABSTRACT FROM AUTHOR] AB - Copyright of Current Opinion in Solid State & Materials Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYCRYSTALS KW - SOLID mechanics KW - ANISOTROPY KW - MICROSTRUCTURE KW - TITANIUM alloys KW - 3D characterization KW - HEDM KW - Microstructure KW - Plastic deformation KW - Polycrystalline materials KW - Synchrotron radiation KW - X-ray diffraction N1 - Accession Number: 108551773; Schuren, Jay C. 1 Shade, Paul A. 1; Email Address: paul.shade.1@us.af.mil Bernier, Joel V. 2 Li, Shiu Fai 2 Blank, Basil 3 Lind, Jonathan 2,4 Kenesei, Peter 5 Lienert, Ulrich 6 Suter, Robert M. 4 Turner, Todd J. 1 Dimiduk, Dennis M. 1 Almer, Jonathan 5; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: Engineering Directorate, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA 3: PulseRay, Beaver Dams, NY 14812, USA 4: Carnegie Mellon University, Pittsburgh, PA 15213, USA 5: Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA 6: DESY-Petra III, Hamburg, Germany; Source Info: Aug2015, Vol. 19 Issue 4, p235; Subject Term: POLYCRYSTALS; Subject Term: SOLID mechanics; Subject Term: ANISOTROPY; Subject Term: MICROSTRUCTURE; Subject Term: TITANIUM alloys; Author-Supplied Keyword: 3D characterization; Author-Supplied Keyword: HEDM; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Plastic deformation; Author-Supplied Keyword: Polycrystalline materials; Author-Supplied Keyword: Synchrotron radiation; Author-Supplied Keyword: X-ray diffraction; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.cossms.2014.11.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108551773&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lien, Wen AU - Roberts, Howard W. AU - Platt, Jeffrey A. AU - Vandewalle, Kraig S. AU - Hill, Thomas J. AU - Chu, Tien-Min G. T1 - Microstructural evolution and physical behavior of a lithium disilicate glass–ceramic. JO - Dental Materials JF - Dental Materials Y1 - 2015/08// VL - 31 IS - 8 M3 - Article SP - 928 EP - 940 SN - 01095641 AB - Background Elucidating the microstructural responses of the lithium disilicate system like the popular IPS e.max® CAD (LS 2 ), made specifically for computer-aided design and computer-aided manufacturing (CAD-CAM), as a temperature-dependent system unravels new ways to enhance material properties and performance. Objective To study the effect of various thermal processing on the crystallization kinetics, crystallite microstructure, and strength of LS 2 . Methods The control group of the LS 2 samples was heated using the standard manufacturer heating-schedule. Two experimental groups were tested: (1) an extended temperature range (750–840 °C vs. 820–840 °C) at the segment of 30 °C/min heating rate, and (2) a protracted holding time (14 min vs. 7 min) at the isothermal temperature of 840 °C. Five other groups of different heating schedules with lower-targeted temperatures were evaluated to investigate the microstructural changes. For each group, the crystalline phases and morphologies were measured by X-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. Differential scanning calorimeter (DSC) was used to determine the activation energy of LS 2 under non-isothermal conditions. A universal testing machine was used to measure 3-point flexural strength and fracture toughness, and elastic modulus and hardness were measured by a nanoindenter. A one-way ANOVA/Tukey was performed per property (alpha = 0.05). Results DSC, XRD, and SEM revealed three distinct microstructures during LS 2 crystallization. Significant differences were found between the control group, the two aforementioned experimental groups, and the five lower-targeted-temperature groups per property ( p < 0.05). The activation energy for lithium disilicate growth was 667 (±29.0) kJ/mol. Conclusions Groups with the extended temperature range (750–840 °C) and protracted holding time (820–840 °C H14) produced significantly higher elastic-modulus and hardness properties than the control group but showed similar flexural-strength and fracture-toughness properties with the control group. In general, rapid growth of lithium disilicates occurred only when maximum formation of lithium metasilicates had ended. [ABSTRACT FROM AUTHOR] AB - Copyright of Dental Materials is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - LITHIUM silicates KW - CERAMICS KW - CRYSTALLIZATION KW - X-ray diffraction KW - Crystallization KW - Differential scanning calorimetry KW - Glass–ceramic KW - Heating schedule KW - IPS e.max® CAD KW - Lithium disilicate KW - Lithium metasilicate KW - Microstructure KW - Nanoindentation KW - Nucleation KW - Phase transformation KW - Temperature threshold N1 - Accession Number: 103690323; Lien, Wen 1,2; Email Address: wenlien2003@yahoo.com Roberts, Howard W. 3 Platt, Jeffrey A. 2 Vandewalle, Kraig S. 4 Hill, Thomas J. 5 Chu, Tien-Min G. 2; Affiliation: 1: United States Air Force Institute of Technology, Wright-Patterson Air Force Base, OH, USA 2: Indiana University School of Dentistry, Indianapolis, Indiana, USA 3: United States Air Force, Keesler Air Force Base, MS, USA 4: United States Air Force, Joint Base San Antonio, TX, USA 5: Ivoclar Vivadent, Amherst, NY, USA; Source Info: Aug2015, Vol. 31 Issue 8, p928; Subject Term: MICROSTRUCTURE; Subject Term: LITHIUM silicates; Subject Term: CERAMICS; Subject Term: CRYSTALLIZATION; Subject Term: X-ray diffraction; Author-Supplied Keyword: Crystallization; Author-Supplied Keyword: Differential scanning calorimetry; Author-Supplied Keyword: Glass–ceramic; Author-Supplied Keyword: Heating schedule; Author-Supplied Keyword: IPS e.max® CAD; Author-Supplied Keyword: Lithium disilicate; Author-Supplied Keyword: Lithium metasilicate; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Nanoindentation; Author-Supplied Keyword: Nucleation; Author-Supplied Keyword: Phase transformation; Author-Supplied Keyword: Temperature threshold; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.dental.2015.05.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103690323&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lawrance, Julie E. AU - Christodoulou, Christos G. AU - Taha, Mahmoud Reda T1 - A High-Power Microwave Zoom Antenna With Metal-Plate Lenses. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2015/08// VL - 63 IS - 8 M3 - Article SP - 3380 EP - 3389 SN - 0018926X AB - Metal-plate lens antennas were designed and constructed for a high-power microwave zoom antenna concept comprising a pyramidal horn feed antenna and two metal-plate lenses. Good agreement was found between experiment and simulation. This antenna provides true zoom capability with continuously variable collimated beam output, approximately 10% bandwidth, and very high power-handling capability. It can be designed to operate at any frequency in the range of about 100 MHz to 10 GHz. It was found that nano-modified carbon fiber composites could be used instead of metal plates in these lenses; these composites would reduce the weight of the lens significantly and would help to mitigate possible spurious TM modes induced in the lens when it is in the near-field of the feed horn antenna. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVE antennas KW - RESEARCH KW - LENS antennas KW - ANTENNAS (Electronics) KW - CARBON fibers KW - PARALLEL-plate waveguides KW - Antenna feeds KW - Antenna measurements KW - high power microwave zoom antenna KW - Horn antennas KW - Lenses KW - metal plate lenses KW - Metals KW - Microwave antennas KW - parallel plate waveguide lenses KW - Zoom antennas N1 - Accession Number: 108733960; Lawrance, Julie E. 1 Christodoulou, Christos G. 2 Taha, Mahmoud Reda 3; Affiliation: 1: , Air Force Research Laboratory, Albuquerque, NM, USA 2: Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM, USA 3: Department of Mechanical Engineering, University of New Mexico, Albuquerque, NM, USA; Source Info: Aug2015, Vol. 63 Issue 8, p3380; Subject Term: MICROWAVE antennas; Subject Term: RESEARCH; Subject Term: LENS antennas; Subject Term: ANTENNAS (Electronics); Subject Term: CARBON fibers; Subject Term: PARALLEL-plate waveguides; Author-Supplied Keyword: Antenna feeds; Author-Supplied Keyword: Antenna measurements; Author-Supplied Keyword: high power microwave zoom antenna; Author-Supplied Keyword: Horn antennas; Author-Supplied Keyword: Lenses; Author-Supplied Keyword: metal plate lenses; Author-Supplied Keyword: Metals; Author-Supplied Keyword: Microwave antennas; Author-Supplied Keyword: parallel plate waveguide lenses; Author-Supplied Keyword: Zoom antennas; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TAP.2015.2435037 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108733960&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fernandez, Joseph A. AU - Boddeti, Vishnu Naresh AU - Rodriguez, Andres AU - Kumar, B. V. K. Vijaya T1 - Zero-Aliasing Correlation Filters for Object Recognition. JO - IEEE Transactions on Pattern Analysis & Machine Intelligence JF - IEEE Transactions on Pattern Analysis & Machine Intelligence Y1 - 2015/08// VL - 37 IS - 8 M3 - Article SP - 1702 EP - 1715 SN - 01628828 AB - Correlation filters (CFs) are a class of classifiers that are attractive for object localization and tracking applications. Traditionally, CFs have been designed in the frequency domain using the discrete Fourier transform (DFT), where correlation is efficiently implemented. However, existing CF designs do not account for the fact that the multiplication of two DFTs in the frequency domain corresponds to a circular correlation in the time/spatial domain. Because this was previously unaccounted for, prior CF designs are not truly optimal, as their optimization criteria do not accurately quantify their optimization intention. In this paper, we introduce new zero-aliasing constraints that completely eliminate this aliasing problem by ensuring that the optimization criterion for a given CF corresponds to a linear correlation rather than a circular correlation. This means that previous CF designs can be significantly improved by this reformulation. We demonstrate the benefits of this new CF design approach with several important CFs. We present experimental results on diverse data sets and present solutions to the computational challenges associated with computing these CFs. Code for the CFs described in this paper and their respective zero-aliasing versions is available at http://vishnu.boddeti.net/projects/correlation-filters.html [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Pattern Analysis & Machine Intelligence is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OBJECT recognition (Computer vision) KW - DISCRETE Fourier transforms KW - NOISE -- Measurement KW - FREQUENCY-domain analysis KW - MATHEMATICAL optimization KW - Correlation KW - Correlation Filters KW - Discrete Fourier transforms KW - Frequency-domain analysis KW - Noise measurement KW - Object Detection KW - Object Localization KW - Object Recognition KW - Optimization KW - Training KW - Videos N1 - Accession Number: 103665840; Fernandez, Joseph A. 1 Boddeti, Vishnu Naresh 2 Rodriguez, Andres 3 Kumar, B. V. K. Vijaya 1; Affiliation: 1: Department of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburgh, PA 2: Robotics Institute, Carnegie Mellon University, Pittsburgh, PA 3: Air Force Research Laboratory, Dayton, Ohio; Source Info: Aug2015, Vol. 37 Issue 8, p1702; Subject Term: OBJECT recognition (Computer vision); Subject Term: DISCRETE Fourier transforms; Subject Term: NOISE -- Measurement; Subject Term: FREQUENCY-domain analysis; Subject Term: MATHEMATICAL optimization; Author-Supplied Keyword: Correlation; Author-Supplied Keyword: Correlation Filters; Author-Supplied Keyword: Discrete Fourier transforms; Author-Supplied Keyword: Frequency-domain analysis; Author-Supplied Keyword: Noise measurement; Author-Supplied Keyword: Object Detection; Author-Supplied Keyword: Object Localization; Author-Supplied Keyword: Object Recognition; Author-Supplied Keyword: Optimization; Author-Supplied Keyword: Training; Author-Supplied Keyword: Videos; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TPAMI.2014.2375215 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103665840&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - CHAPLEAU, RICHARD R. AU - BALDWIN, JAMES C. T1 - Optical Whole-Genome Restriction Mapping as a Tool for Rapidly Distinguishing and Identifying Bacterial Contaminants in Clinical Samples. JO - Journal of Clinical & Diagnostic Research JF - Journal of Clinical & Diagnostic Research Y1 - 2015/08// VL - 9 IS - 8 M3 - Article SP - 24 EP - 27 SN - 0973709X AB - Introduction: Optical restriction genome mapping is a technology in which a genome is linearized on a surface and digested with specific restriction enzymes, giving an arrangement of the genome with gaps whose order and size are unique for a given organism. Current applications of this technology include assisting with the correct scaffolding and ordering of genomes in conjunction with whole-genome sequencing, observation of genetic drift and evolution using comparative genomics and epidemiological monitoring of the spread of infections. Here, we investigated the suitability of genome mapping for use in clinical labs as a potential diagnostic tool. Materials and Methods: Using whole genome mapping, we investigated the basic performance of the technology for identifying two bacteria of interest for food-safety (Lactobacilli spp. and Enterohemorrhagic Escherichia coli). We further evaluated the performance for identifying multiple organisms from both simple and complex mixtures. Results: We were able to successfully generate optical restriction maps of four Lactobacillus species as well as a strain of Enterohemorrhagic Escherichia coli from within a mixed solution, each distinguished using a common compatible restriction enzyme. Finally, we demonstrated that optical restriction maps were successfully obtained and the correct organism identified within a clinical matrix. Conclusion: With additional development, whole genome mapping may be a useful clinical tool for rapid invitro diagnostics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Clinical & Diagnostic Research is the property of JCDR Research & Publications Private Limited and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GENE mapping KW - ORGANISMS KW - DNA sequencing KW - Assay development KW - Bacterial detection KW - Genome identification KW - Technical evaluation KW - Whole genome mapping N1 - Accession Number: 110182391; CHAPLEAU, RICHARD R. 1; Email Address: richard.chapleau.1@us.af.mil BALDWIN, JAMES C. 1; Affiliation: 1: Applied Technology and Genomics Center, United States Air Force School of Aerospace Medicine, 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB OH; Source Info: Aug2015, Vol. 9 Issue 8, p24; Subject Term: GENE mapping; Subject Term: ORGANISMS; Subject Term: DNA sequencing; Author-Supplied Keyword: Assay development; Author-Supplied Keyword: Bacterial detection; Author-Supplied Keyword: Genome identification; Author-Supplied Keyword: Technical evaluation; Author-Supplied Keyword: Whole genome mapping; Number of Pages: 4p; Document Type: Article L3 - 10.7860/JCDR/2015/13983.6408 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=110182391&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hossain, M. K. AU - Chowdhury, M. M. R. AU - Salam, M. B. A. AU - Jahan, N. AU - Malone, J. AU - Hosur, M. V. AU - Jeelani, S. AU - Bolden, N. W. T1 - Enhanced mechanical properties of carbon fiber/epoxy composites by incorporating XD-grade carbon nanotube. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2015/08// VL - 49 IS - 18 M3 - Article SP - 2251 EP - 2263 SN - 00219983 AB - Carbon fiber-reinforced epoxy composites (CFEC) were fabricated infusing 0–0.40 wt% XD-grade carbon nanotube (XD-CNT) using the compression molding process under 16 kips. XD-CNTs were infused into Epon 862 resin using a mechanical stirrer followed by a high intensity ultrasonic liquid processor. The mixture was then placed in a three-roll milling processor for three successive cycles at 140 rpm. Epikure W curing agent was added to the modified resin and mixed using a high-speed mechanical stirrer. Flexural and tensile properties obtained from the flexural and tensile tests were higher in all nanophased composites compared to those of the conventional one. However, samples with 0.3 wt% CNT loading demonstrated the maximum improvement by 27% and 14% in flexural strength and modulus and 19% and 10% in tensile strength and modulus, respectively. Fracture morphology studied by both scanning electron microscopy and optical microscopy revealed better interfacial bonding in the CNT-loaded CFEC. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON fiber-reinforced plastics KW - RESEARCH KW - CARBON nanotubes KW - COMPRESSION molding KW - ULTRASONIC machining KW - MIXING machinery KW - TENSILE test (Materials) KW - FLEXURAL strength -- Testing KW - SCANNING electron microscopes KW - compression molding KW - mechanical properties KW - nanocomposite KW - sonication KW - three-roll processor KW - XDCNT N1 - Accession Number: 108628011; Hossain, M. K. 1; Email Address: Hossainm@Mytu.Tuskegee.Edu Chowdhury, M. M. R. 1 Salam, M. B. A. 1 Jahan, N. 1 Malone, J. 1 Hosur, M. V. 2 Jeelani, S. 2 Bolden, N. W. 3; Affiliation: 1: Department of Mechanical Engineering, Tuskegee University, Tuskegee, AL, USA 2: Department of Materials Science and Engineering, Tuskegee University, Tuskegee, AL, USA 3: Air Force Research Laboratory Munitions Directorate, Eglin AFB, FL, USA; Source Info: Aug2015, Vol. 49 Issue 18, p2251; Subject Term: CARBON fiber-reinforced plastics; Subject Term: RESEARCH; Subject Term: CARBON nanotubes; Subject Term: COMPRESSION molding; Subject Term: ULTRASONIC machining; Subject Term: MIXING machinery; Subject Term: TENSILE test (Materials); Subject Term: FLEXURAL strength -- Testing; Subject Term: SCANNING electron microscopes; Author-Supplied Keyword: compression molding; Author-Supplied Keyword: mechanical properties; Author-Supplied Keyword: nanocomposite; Author-Supplied Keyword: sonication; Author-Supplied Keyword: three-roll processor; Author-Supplied Keyword: XDCNT; NAICS/Industry Codes: 417220 Mining and oil and gas well machinery, equipment and supplies merchant wholesalers; Number of Pages: 13p; Document Type: Article; Full Text Word Count: 5593 L3 - 10.1177/0021998314545186 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108628011&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gowayed, Y. AU - Ojard, G. AU - Santhosh, U. AU - Jefferson, G. T1 - Modeling of crack density in ceramic matrix composites. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2015/08// VL - 49 IS - 18 M3 - Article SP - 2285 EP - 2294 SN - 00219983 AB - The feasibility of utilizing the shear lag theory to estimate crack density in fabric reinforced composites was investigated. A geometric model was constructed for the fabric and meshed using a hybrid finite element approach. The small segment of the yarn and the surrounding matrix enclosed within each element were treated as a unidirectional composite and the shear lag theory was used to estimate the crack density. Model results were compared to experimental data for a 5-harness satin melt-infiltrated SiC/SiC composite under tension and showed a pattern similar to experimental data with the model starting to accumulate cracks at a stress corresponding to the point of departure from linearity in the stress–strain curve while cracks were experimentally observed around 60 MPa higher. The model and experimental data had a similar value for the crack density at the saturation level. Sensitivity analysis showed that the crack density was highly sensitive to the fiber volume fraction in the load direction followed by the weave angle of the crimped segments of the yarns and the interfacial shear strength between the fibers and the matrix. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIBER-reinforced ceramics KW - RESEARCH KW - SHEAR (Mechanics) KW - GEOMETRIC modeling KW - STRESS corrosion cracking KW - STRAINS & stresses (Mechanics) KW - SENSITIVITY analysis KW - Ceramic matrix composites KW - matrix cracking KW - modeling N1 - Accession Number: 108628013; Gowayed, Y. 1; Email Address: gowayya@auburn.edu Ojard, G. 2 Santhosh, U. 3 Jefferson, G. 4; Affiliation: 1: Department of Polymer and Fiber Engineering, Auburn University, Auburn, AL, USA 2: Pratt & Whitney, East, Hartford, CT, USA 3: Structural Analytics, Inc., Carlsbad, CA, USA 4: Air Force Research Laboratory, AFRL/RXLN, Wright-Patterson AFB, OH, USA; Source Info: Aug2015, Vol. 49 Issue 18, p2285; Subject Term: FIBER-reinforced ceramics; Subject Term: RESEARCH; Subject Term: SHEAR (Mechanics); Subject Term: GEOMETRIC modeling; Subject Term: STRESS corrosion cracking; Subject Term: STRAINS & stresses (Mechanics); Subject Term: SENSITIVITY analysis; Author-Supplied Keyword: Ceramic matrix composites; Author-Supplied Keyword: matrix cracking; Author-Supplied Keyword: modeling; Number of Pages: 10p; Document Type: Article; Full Text Word Count: 5039 L3 - 10.1177/0021998314545188 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108628013&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Manoharan, S. AU - Kalaikadal, D. AU - Manglik, R. M. AU - Jog, M. A. AU - Iskrenova-Ekiert, E. AU - Patnaik, S. S. T1 - Visualization of Multiscale Processes - Bubble Dynamics in Surface Active Colloids. JO - Journal of Heat Transfer JF - Journal of Heat Transfer Y1 - 2015/08//8/1/2015 VL - 137 IS - 8 M3 - Article SP - 1 EP - 1 SN - 00221481 AB - The article focuses on a study based on bubble dynamics in terms of growth of isolated gas bubbles in surface active colloids which has been depicted several images; and mentions that molecular dynamics simulations were incorporated to the volume-of-fluid based macroscale computations. KW - BUBBLE dynamics KW - RESEARCH KW - COLLOIDS KW - MOLECULAR dynamics -- Simulation methods N1 - Accession Number: 109946476; Manoharan, S. 1 Kalaikadal, D. 1 Manglik, R. M. 1 Jog, M. A. 1 Iskrenova-Ekiert, E. 2 Patnaik, S. S. 2; Affiliation: 1: University of Cincinnati 2: Air Force Research Laboratory; Source Info: 8/1/2015, Vol. 137 Issue 8, p1; Subject Term: BUBBLE dynamics; Subject Term: RESEARCH; Subject Term: COLLOIDS; Subject Term: MOLECULAR dynamics -- Simulation methods; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109946476&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sabelkin, V. AU - Zawada, L. AU - Mall, S. T1 - Effects of combustion and salt-fog exposure on fatigue behavior of two ceramic matrix composites and a superalloy. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2015/08// VL - 50 IS - 15 M3 - Article SP - 5204 EP - 5213 PB - Springer Science & Business Media B.V. SN - 00222461 AB - Tension-tension fatigue behavior of two ceramic matrix composites (CMCs), SiC/SiC (Nicalon™/SiC) & oxide/oxide (Nextel™720/AS), and a superalloy (René 41) was characterized under combustion environment as well as under alternate salt-fog exposure for 4 h and combustion fatigue for 6 h. The run-out limit was 25 h (90,000 cycles) of fatigue. Test temperatures were 900, 1050, and 1050 °C for René 41, SiC/SiC, and oxide/oxide CMCs, respectively, and the applied maximum fatigue stress was 62 MPa. All three materials survived up to 25 h under combustion fatigue without any exposure to salt. René 41 and Nicalon™/SiC survived up to 25 h (90,000 cycles) under the alternate exposure of salt-fog and combustion fatigue. However, exposure to salt-fog exposure (5 wt%) had very detrimental effect on the combustion fatigue resistance of Nextel™720/AS. The reduction in salt concentration to 0.5 wt% had less detrimental effect. These tests were supplemented with more tests, where applied stress level, test temperature, and salt concentration were changed. Out of these three gas turbine engine materials, Nicalon™/SiC exhibited better fatigue performance in terms of applied temperature and stress level under combustion condition as well as when exposed to alternate salt-fog and combustion. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON carbide KW - SALT KW - FIBER-reinforced ceramics KW - HEAT resistant alloys KW - TENSION loads KW - METALS -- Fatigue N1 - Accession Number: 102856363; Sabelkin, V. 1 Zawada, L. 2 Mall, S. 1; Email Address: shankar.mall@afit.edu; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology, AFIT/ENY, Bldg. 640, 2950 Hobson Way Wright-Patterson AFB 45433-7765 USA 2: Materials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB 45433-7817 USA; Source Info: Aug2015, Vol. 50 Issue 15, p5204; Subject Term: SILICON carbide; Subject Term: SALT; Subject Term: FIBER-reinforced ceramics; Subject Term: HEAT resistant alloys; Subject Term: TENSION loads; Subject Term: METALS -- Fatigue; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; NAICS/Industry Codes: 311940 Seasoning and dressing manufacturing; NAICS/Industry Codes: 311942 Spice and Extract Manufacturing; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1007/s10853-015-9068-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102856363&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jensen, Mark N. T1 - Is Our Group An Agent? Do We Want It To Be? JO - Journal of Moral Philosophy JF - Journal of Moral Philosophy Y1 - 2015/08// VL - 12 IS - 4 M3 - Article SP - 539 EP - 551 SN - 17404681 AB - Christian List and Philip Pettit's new book, Group Agency: The Possibility, Design, and Status of Corporate Agents, is an interesting, timely, and extremely clever synthesis of the deliverances of th e ir recent technical work on the philosophical, moral an d legal na tu re of group agents. Their meticulously developed ideal group agent provides an excellent starting poin t for analytic reflection on group agency, identity, epistemology, an d responsibility. Insofar as it is th eir in ten t for th eir account to have real world consequences, th e ir model provides a template for political associations, businesses, and civil society organizations. This review essay explains List and Pettit's model and th en points out two unattractive features. First, a bird's eye view of th e conditions required to achieve ideal group agency reveals limitations that may make it impossible to realize. Second, some of these groups, especially businesses and civil society organizations, will find the model unattractive, limiting its real world applicability. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Moral Philosophy is the property of Brill Academic Publishers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMMERCIAL agents KW - AUTONOMY (Philosophy) KW - IDENTITY (Philosophical concept) KW - THEORY of knowledge KW - CIVIL society KW - autonomy KW - discursive dilemma KW - group agency KW - group rationality KW - GROUP Agency: The Possibility, Design & Status of Corporate Agents (Book) KW - IDENTITY & Anxiety: Survival of the Person in Mass Society (Book) N1 - Accession Number: 109194718; Jensen, Mark N. 1; Email Address: mark.jensen@usafa.edu; Affiliation: 1: Department of Philosophy, United States Air Force Academy; Source Info: 2015, Vol. 12 Issue 4, p539; Subject Term: COMMERCIAL agents; Subject Term: AUTONOMY (Philosophy); Subject Term: IDENTITY (Philosophical concept); Subject Term: THEORY of knowledge; Subject Term: CIVIL society; Author-Supplied Keyword: autonomy; Author-Supplied Keyword: discursive dilemma; Author-Supplied Keyword: group agency; Author-Supplied Keyword: group rationality; Reviews & Products: GROUP Agency: The Possibility, Design & Status of Corporate Agents (Book); Reviews & Products: IDENTITY & Anxiety: Survival of the Person in Mass Society (Book); NAICS/Industry Codes: 711410 Agents and Managers for Artists, Athletes, Entertainers, and Other Public Figures; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109194718&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Joseph D. AU - Dedic, Chloe E. AU - Meyer, Terrence R. T1 - Vibrational femtosecond/picosecond coherent anti-Stokes Raman scattering with enhanced temperature sensitivity for flame thermometry from 300 to 2400 K. JO - Journal of Raman Spectroscopy JF - Journal of Raman Spectroscopy Y1 - 2015/08// VL - 46 IS - 8 M3 - Article SP - 702 EP - 707 SN - 03770486 AB - Hybrid femtosecond/picosecond coherent anti-Stokes Raman scattering (fs/ps CARS) of N2 has recently been demonstrated for gas-phase thermometry in reacting flows, enabling frequency-domain detection at high repetition rates with excellent chemical specificity and independence from the effects of collisions and nonresonant background. In this work, we overcome the limited sensitivity of vibrational fs/ps CARS thermometry of N2 below 1200 K by spectrally resolving J-dependent rovibrational coherence revivals that occur 32 ps after initial excitation. The N2 rovibrational coherence is excited using broadband, 100-fs pump and Stokes pulses and probed as a function of time using a narrowband, 5.8-ps probe pulse (bandwidth of 2.5 cm−1). The rovibrational features exhibit sufficient temperature sensitivity below 1200 K for accurate thermometry using a simple, time-dependent phenomenological model. Specifically, three distinct spectral features at a single probe delay of 32.5 ps are analyzed, corresponding to rovibrational revivals with mean rotational quantum numbers of < J> = 3.5, 14, and 28. Good agreement is found between simulated and measured fs/ps CARS spectra in an adiabatic flat-flame burner from 298 to 2400 K. Copyright © 2015 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Raman Spectroscopy is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FEMTOSECOND pulses KW - RAMAN scattering KW - INELASTIC scattering KW - LIGHT -- Scattering KW - ANTI-Stokes scattering KW - coherent anti-Stokes Raman scattering KW - combustion diagnostics KW - thermometry KW - ultrafast spectroscopy N1 - Accession Number: 109077799; Miller, Joseph D. 1,2 Dedic, Chloe E. 2 Meyer, Terrence R. 2; Affiliation: 1: Air Force Research Laboratory Aerospace Systems Directorate, 2: Department of Mechanical Engineering, Iowa State University; Source Info: Aug2015, Vol. 46 Issue 8, p702; Subject Term: FEMTOSECOND pulses; Subject Term: RAMAN scattering; Subject Term: INELASTIC scattering; Subject Term: LIGHT -- Scattering; Subject Term: ANTI-Stokes scattering; Author-Supplied Keyword: coherent anti-Stokes Raman scattering; Author-Supplied Keyword: combustion diagnostics; Author-Supplied Keyword: thermometry; Author-Supplied Keyword: ultrafast spectroscopy; Number of Pages: 6p; Document Type: Article L3 - 10.1002/jrs.4725 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109077799&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - HEIDLER, JEANNE T. T1 - A Companion to the Antebellum Presidents, 1837-1861. JO - Journal of Southern History JF - Journal of Southern History Y1 - 2015/08// VL - 81 IS - 3 M3 - Book Review SP - 715 EP - 716 PB - Southern Historical Association SN - 00224642 KW - PRESIDENTS -- United States KW - HISTORY KW - NONFICTION KW - SILBEY, Joel H. KW - COMPANION to the Antebellum Presidents 1837-1861, A (Book) N1 - Accession Number: 108705324; HEIDLER, JEANNE T. 1; Affiliation: 1: United States Air Force Academy; Source Info: Aug2015, Vol. 81 Issue 3, p715; Subject Term: PRESIDENTS -- United States; Subject Term: HISTORY; Subject Term: NONFICTION; Reviews & Products: COMPANION to the Antebellum Presidents 1837-1861, A (Book); People: SILBEY, Joel H.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108705324&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Min Wang AU - Seaho Jeon AU - Chefu Su AU - Tzuyang Yu AU - Loon-Seng Tan AU - Chiang, Long Y. T1 - Synthesis of Photoswitchable Magnetic Au–Fullerosome Hybrid Nanomaterials for Permittivity Enhancement Applications. JO - Molecules JF - Molecules Y1 - 2015/08// VL - 20 IS - 8 M3 - Article SP - 14746 EP - 14760 SN - 14203049 AB - We designed and synthesized several nanomaterials 3 of three-layered core-shell (γ-FeOx@AuNP)@[C60(>DPAF-C9)1or2]n nanoparticles (NPs). These NPs having e−-polarizable fullerosome structures located at the outer layer were fabricated from highly magnetic core-shell γ-FeOx@AuNPs. Fullerosomic polarization of 3 was found to be capable of causing a large amplification of material permittivity that is also associated with the photoswitching effect in the frequency range of 0.5‒4.0 GHz. Multilayered synthetic construction allows Förster resonance energy transfer (FRET) of photoinduced accumulative surface plasmon resonance (SPR) energy in the gold layer to the partially bilayered C60(>DPAF-C9)1or2-derived fullerosome membrane shell layer in a near-field of direct contact without producing radiation heat, which is commonly associated with SPR. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecules is the property of MDPI Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERMITTIVITY KW - FLUORESCENCE resonance energy transfer KW - SURFACE plasmon resonance KW - NANOPARTICLES KW - LIGHT absorption KW - core-shell nanoparticles KW - fullerenyl chromophore conjugates KW - gold-fullerosome hybrid nanomaterials KW - permittivity KW - relative dielectric constant enhancement N1 - Accession Number: 109108998; Min Wang 1; Email Address: wangmin81@gmail.com Seaho Jeon 1; Email Address: seaho_jeon@uml.edu Chefu Su 2; Email Address: CheFu_Su@student.uml.edu Tzuyang Yu 2; Email Address: TzuYang_Yu@uml.edu Loon-Seng Tan 3; Email Address: Loon-Seng.Tan@wpafb.af.mil Chiang, Long Y. 1; Email Address: Long_Chiang@uml.edu; Affiliation: 1: Department of Chemistry, Institute of Nanoscience and Engineering Technology, University of Massachusetts Lowell, Lowell, MA 01854, USA 2: Department of Civil and Environmental Engineering, University of Massachusetts Lowell, Lowell, MA 01854, USA 3: Functional Materials Division, AFRL/RXA, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: Aug2015, Vol. 20 Issue 8, p14746; Subject Term: PERMITTIVITY; Subject Term: FLUORESCENCE resonance energy transfer; Subject Term: SURFACE plasmon resonance; Subject Term: NANOPARTICLES; Subject Term: LIGHT absorption; Author-Supplied Keyword: core-shell nanoparticles; Author-Supplied Keyword: fullerenyl chromophore conjugates; Author-Supplied Keyword: gold-fullerosome hybrid nanomaterials; Author-Supplied Keyword: permittivity; Author-Supplied Keyword: relative dielectric constant enhancement; Number of Pages: 15p; Illustrations: 3 Diagrams, 4 Graphs; Document Type: Article L3 - 10.3390/molecules200814746 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109108998&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Shannon C. AU - Whitehead, Casserly R. AU - Otte, Clifford N. AU - Wells, Timothy S. AU - Webb, Timothy S. AU - Gore, Russell K. AU - Maynard, Charles T1 - Risk for broad-spectrum neuropsychiatric disorders after mild traumatic brain injury in a cohort of US Air Force personnel. JO - Occupational & Environmental Medicine JF - Occupational & Environmental Medicine Y1 - 2015/08// VL - 72 IS - 8 M3 - Article SP - 560 EP - 566 SN - 13510711 AB - Background Military personnel are at increased risk for traumatic brain injury (TBI) from combat and non-combat exposures. Sequelae of moderate-to-severe TBI are well described, but the literature remains conflicted regarding whether mild TBI (mTBI) results in lasting brain injury and functional impairments. This study assessed risk for a range of neuropsychiatric disorders presenting after mTBI while adjusting for the potential confounds of depression and post-traumatic stress disorder (PTSD). Methods A historical prospective association study was conducted utilising electronic demographic, medical and military-specific data for over 49 000 active duty US Air Force service members (Airmen). This study utilised diagnostic codes considered by an expert panel to be indicative of mTBI to identify cases. Cox proportional hazards modelling calculated HRs for neuropsychiatric outcomes while controlling for varying lengths of follow- up and potentially confounding variables. Results Airmen with mTBI were at increased risk for specific neuropsychiatric disorders compared with a similarly injured non-mTBI control group. HRs for memory loss/amnesia, cognitive disorders, schizophrenia, PTSD, and depression were significantly elevated and remained so for at least 6 months post-mTBI, even after eliminating those with previous neuropsychiatric diagnoses. Conclusions mTBI was positively associated with neuropsychiatric disorders in this population of primarily young adult males; with increased HRs 6 months post- mTBI. The results support that mTBI is distinguished from moderate-to-severe TBI in terms of risk for developing neuropsychiatric disorders. Further, these findings suggest the importance of screening for psychiatric and cognitive disorders post-mTBI in general medical practice. [ABSTRACT FROM AUTHOR] AB - Copyright of Occupational & Environmental Medicine is the property of BMJ Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - HEALTH KW - WOUNDS & injuries KW - Neurobehavioral disorders -- Risk factors KW - Brain injury patients KW - Airmen KW - Brain KW - United States. Air Force N1 - Accession Number: 108588428; Miller, Shannon C. 1,2,3; Whitehead, Casserly R. 4; Email Address: Casserly.Whitehead.ctr@US.AF.MIL; Otte, Clifford N.; Wells, Timothy S. 1,5; Webb, Timothy S.; Gore, Russell K. 1,6; Maynard, Charles 7; Affiliations: 1: Veterans Affairs Medical Center, Cincinnati, Ohio, USA; 2: Addiction Sciences Division, Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati, Cincinnati, Ohio, USA; 3: Vulnerability Analysis Branch, Air Force Research Laboratory, Wright-Patterson AFB, Ohio, USA; 4: Infoscitex Corporation, Dayton, Ohio, USA; 5: Defense Health Program Research Management Division, Plans and Programs Office, WPAFB, Ohio, USA; 6: Sports Concussion Institute, Atlanta, Georgia, USA; 7: Epidemiologic Research & Information Center (ERIC), Seattle, Washington, USA; Issue Info: Aug2015, Vol. 72 Issue 8, p560; Thesaurus Term: RESEARCH; Thesaurus Term: HEALTH; Thesaurus Term: WOUNDS & injuries; Subject Term: Neurobehavioral disorders -- Risk factors; Subject Term: Brain injury patients; Subject Term: Airmen; Subject Term: Brain ; Company/Entity: United States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 7p; Illustrations: 1 Diagram, 2 Charts; Document Type: Article L3 - 10.1136/oemed-2014-102646 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=108588428&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hafiane, Adel AU - Palaniappan, Kannappan AU - Seetharaman, Guna T1 - Joint Adaptive Median Binary Patterns for texture classification. JO - Pattern Recognition JF - Pattern Recognition Y1 - 2015/08// VL - 48 IS - 8 M3 - Article SP - 2609 EP - 2620 SN - 00313203 AB - This paper addresses the challenging problem of the recognition and classification of textured surfaces given a single instance acquired under unknown pose, scale and illumination conditions. We propose a novel texture descriptor, the Adaptive Median Binary Pattern (AMBP) based on an adaptive analysis window of local patterns. The principal idea of the AMBP is to convert a small local image patch to a binary pattern using adaptive threshold selection that switches between the central pixel value as used in the Local Binary Pattern (LBP) and the median as in Median Binary Pattern (MBP), but within a variable sized analysis window depending on the local microstructure of the texture. The variability of the local adaptive window is included as joint information to increase the discriminative properties. A new multiscale scheme is also proposed in this paper to handle the texture resolution problem. AMBP is evaluated in relation to other recent binary pattern techniques and many other texture analysis methods on three large texture corpora with and without noise added, CUReT, Outex_TC00012 and KTH_TIPS2. Generally, the proposed method performs better than the best state-of-the-art techniques in the noiseless case and significantly outperforms all of them in the presence of impulse noise. [ABSTRACT FROM AUTHOR] AB - Copyright of Pattern Recognition is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PATTERN recognition systems KW - BINARY system (Mathematics) KW - TEXTURE analysis (Image processing) KW - CLASSIFICATION KW - PIXELS KW - Adaptive median KW - Impulse noise KW - Local Binary Pattern KW - Multiscale KW - Rotation invariance KW - Texture classification N1 - Accession Number: 102208799; Hafiane, Adel 1; Email Address: adel.hafiane@insa-cvl.fr Palaniappan, Kannappan 2 Seetharaman, Guna 3; Affiliation: 1: INSA Centre Val de Loire, Université d׳Orléans, Laboratoire PRISME, EA 4929, F-18000, Bourges, France 2: Department of Computer Science, University of Missouri, Columbia, MO 65211, USA 3: Information Directorate, Air Force Research Laboratory, Rome, NY 13441, USA; Source Info: Aug2015, Vol. 48 Issue 8, p2609; Subject Term: PATTERN recognition systems; Subject Term: BINARY system (Mathematics); Subject Term: TEXTURE analysis (Image processing); Subject Term: CLASSIFICATION; Subject Term: PIXELS; Author-Supplied Keyword: Adaptive median; Author-Supplied Keyword: Impulse noise; Author-Supplied Keyword: Local Binary Pattern; Author-Supplied Keyword: Multiscale; Author-Supplied Keyword: Rotation invariance; Author-Supplied Keyword: Texture classification; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.patcog.2015.02.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102208799&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fendel, Peter AU - Ganguly, Biswa N. AU - Bletzinger, Peter T1 - Measurement and modeling of electric field and space-charge distributions in obstructed helium discharge. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2015/08// VL - 22 IS - 8 M3 - Article SP - 1 EP - 6 PB - American Institute of Physics SN - 1070664X AB - Axial and radial variations of electric field have been measured in dielectric shielded 0.025m diameter parallel plate electrode with 0.0065m gap for 1.6 mA, 2260V helium dc discharge at 1.75 Torr. The axial and radial electric field profiles have been measured from the Stark splitting of 2¹S→11 ¹P transition through collision induced fluorescence from 4³D→2³P. The electric field values showed a strong radial variation peaking to 500 kV/m near the cathode radial boundary, and decreasing to about 100 kV/m near the anode edge, suggesting the formation of an obstructed discharge for this low nd condition, where n is the gas density and d is the gap distance. The off-axis Stark spectra showed that the electric field vector deviates from normal to the cathode surface which permits longer path electron trajectories in the inter-electrode gap. Also, the on-axis electric field gradient was very small and off-axis electric field gradient was large indicating a radially non-uniform current density. In order to obtain information about the space charge distribution in this obstructed discharge, it was modeled using the 2-d axisymmetric Poisson solver with the COMSOL finite element modeling program. The best fit to the measured electric field distribution was obtained with a space charge variation of q(r)=q0(r/r0)³, where q(r) is the local space charge density, q0=6×10-3 Coulomb/m3, r is the local radial value, and r0 is the radius of the electrode. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE charge KW - HELIUM KW - PLASMA flow KW - ELECTRIC fields KW - FLUORESCENCE spectroscopy N1 - Accession Number: 109346967; Fendel, Peter 1 Ganguly, Biswa N. 2,3 Bletzinger, Peter 2; Affiliation: 1: Thorlabs, 56 Sparta Avenue, Newton, New Jersey 07860, USA 2: Air Force Research Laboratory, WPAFB, Ohio 45433, USA 3: UES, Inc, 4401 Dayton-Xenia Rd., Dayton, Ohio 45432, USA; Source Info: Aug2015, Vol. 22 Issue 8, p1; Subject Term: SPACE charge; Subject Term: HELIUM; Subject Term: PLASMA flow; Subject Term: ELECTRIC fields; Subject Term: FLUORESCENCE spectroscopy; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 6p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1063/1.4928114 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109346967&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Simon, D. H. AU - Lau, Y. Y. AU - Greening, G. AU - Wong, P. AU - Hoff, B. W. AU - Gilgenbach, R. M. T1 - Stability of Brillouin flow in planar, conventional, and inverted magnetrons. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2015/08// VL - 22 IS - 8 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 1070664X AB - The Brillouin flow is the prevalent flow in crossed-field devices. We systematically study its stability in the conventional, planar, and inverted magnetron geometry. To investigate the intrinsic negative mass effect in Brillouin flow, we consider electrostatic modes in a nonrelativistic, smooth bore magnetron. We found that the Brillouin flow in the inverted magnetron is more unstable than that in a planar magnetron, which in turn is more unstable than that in the conventional magnetron. Thus, oscillations in the inverted magnetron may startup faster than the conventional magnetron. This result is consistent with simulations, and with the negative mass property in the inverted magnetron configuration. Inclusion of relativistic effects and electromagnetic effects does not qualitatively change these conclusions. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA stability KW - BRILLOUIN scattering KW - MAGNETRONS KW - NONRELATIVISTIC quantum mechanics KW - SIMULATION methods & models N1 - Accession Number: 109346888; Simon, D. H. 1 Lau, Y. Y. 1 Greening, G. 1 Wong, P. 1 Hoff, B. W. 2 Gilgenbach, R. M. 1; Affiliation: 1: Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109-2104, USA 2: Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, New Mexico 87117, USA; Source Info: Aug2015, Vol. 22 Issue 8, p1; Subject Term: PLASMA stability; Subject Term: BRILLOUIN scattering; Subject Term: MAGNETRONS; Subject Term: NONRELATIVISTIC quantum mechanics; Subject Term: SIMULATION methods & models; Number of Pages: 5p; Illustrations: 4 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.4927798 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109346888&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wu, Jingbo AU - Liou, Jau-Hung AU - Shu, Charles Y. AU - Patel, Yash AU - Menon, Remya AU - Santucci, Cara AU - Iacono, Scott T. AU - Jr.Smith, Dennis W. AU - Novak, Bruce M. T1 - Facile method towards functionalization of partially fluorinated polyarylethers via sequential post-polymerization modification. JO - Reactive & Functional Polymers JF - Reactive & Functional Polymers Y1 - 2015/08// VL - 93 M3 - Article SP - 38 EP - 46 SN - 13815148 AB - A novel partially fluorinated arylene vinylene ether (FAVE) polymer containing ester groups was synthesized, which was used to prepare three reactive FAVE polymers containing carboxylic acid groups, alcohol groups, and acid chloride groups, respectively. Post-polymerization modifications of the FAVE polymer's carboxylic acid groups (via a DCC coupling procedure with the desired alcohol), alcohol groups (via DCC coupling or an acid chloride esterification procedure with the desired carboxylic acid or acid chloride), and acid chloride groups (via an optimized nucleophilic substitution reaction with the desired alcohol or amine) were successfully performed. Several examples have been successfully prepared to demonstrate the versatility of these developed modification methods. FAVE polymers have been prepared with NHS active ester groups, Disperse Red 1 chromophores, benzyl bromide groups, aryl trifluorovinyl ether groups, ATRP initiator groups, vinyl groups, propargyl groups, Disperse Orange 3 chromophores, and benzaldehyde groups. In most cases, analytical data are consistent with a quantitative conversion of the reactive or functional groups. It is demonstrated that no degradation of the FAVE polymer matrix occurs after multistep post-polymerization modification reactions. [ABSTRACT FROM AUTHOR] AB - Copyright of Reactive & Functional Polymers is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERIZATION KW - FLUORINATION KW - ETHYLENE dichloride KW - CARBOXYLIC acids KW - NUCLEOPHILIC reactions KW - Advanced materials KW - Fluoropolymers KW - Polymer synthesis KW - Post-functionalization KW - Thermoplastic N1 - Accession Number: 108808727; Wu, Jingbo 1; Email Address: wjbsioc2013@gmail.com Liou, Jau-Hung 1 Shu, Charles Y. 1 Patel, Yash 2 Menon, Remya 3 Santucci, Cara 1 Iacono, Scott T. 4; Email Address: scott.iacono@usafa.edu Jr.Smith, Dennis W. 1 Novak, Bruce M. 1; Affiliation: 1: Department of Chemistry and the Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas, Richardson, TX 75080, USA 2: Princeton University, 3493 Frist Center, Princeton, NJ 08544, USA 3: Greenhill School, 4141 Spring Valley Rd, Addison, TX 75001, USA 4: Department of Chemistry and Chemistry Research Center, United States Air Force Academy, Colorado Springs, CO 80840, USA; Source Info: Aug2015, Vol. 93, p38; Subject Term: POLYMERIZATION; Subject Term: FLUORINATION; Subject Term: ETHYLENE dichloride; Subject Term: CARBOXYLIC acids; Subject Term: NUCLEOPHILIC reactions; Author-Supplied Keyword: Advanced materials; Author-Supplied Keyword: Fluoropolymers; Author-Supplied Keyword: Polymer synthesis; Author-Supplied Keyword: Post-functionalization; Author-Supplied Keyword: Thermoplastic; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.reactfunctpolym.2015.05.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108808727&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Melko, Joshua J. AU - Ard, Shaun G. AU - Shuman, Nicholas S. AU - Pedder, Randall E. AU - Taormina, Christopher R. AU - Viggiano, Albert A. T1 - Coupling an electrospray source and a solids probe/chemical ionization source to a selected ion flow tube apparatus. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2015/08// VL - 86 IS - 8 M3 - Article SP - 1 EP - 6 PB - American Institute of Physics SN - 00346748 AB - A new ion source region has been constructed and attached to a variable temperature selected ion flow tube. The source features the capabilities of electron impact, chemical ionization, a solids probe, and electrospray ionization. The performance of the instrument is demonstrated through a series of reactions from ions created in each of the new source regions. The chemical ionization source is able to create H3O+, but not as efficiently as similar sources with larger apertures. The ability of this source to support a solids probe, however, greatly expands our capabilities. A variety of rhenium cations and dications are created from the solids probe in sufficient abundance to study in the flow tube. The reaction of Re+ with O2 proceeds with a rate constant that agrees with the literature measurements, while the reaction of Re22+ is found to charge transfer with O2 at about 60% of the collision rate; we have also performed calculations that support the charge transfer pathway. The electrospray source is used to create Ba+, which is reacted with N2O to create BaO+, and we find a rate constant that agrees with the literature. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COUPLING reactions (Chemistry) KW - RESEARCH KW - CHEMICAL reactions KW - ELECTROSPRAY ionization mass spectrometry KW - MASS spectrometry KW - CHEMICAL ionization mass spectrometry N1 - Accession Number: 108825796; Melko, Joshua J. 1,2 Ard, Shaun G. 1 Shuman, Nicholas S. 1 Pedder, Randall E. 3 Taormina, Christopher R. 3 Viggiano, Albert A. 1; Email Address: afrl.rvborgmailbox@kirtland.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117-5776, USA 2: Department of Chemistry, University of North Florida, Jacksonville, Florida 32224, USA 3: Ardara Technologies L.P., 12941 Route 993, Ardara, Pennsylvania 15615, USA; Source Info: 2015, Vol. 86 Issue 8, p1; Subject Term: COUPLING reactions (Chemistry); Subject Term: RESEARCH; Subject Term: CHEMICAL reactions; Subject Term: ELECTROSPRAY ionization mass spectrometry; Subject Term: MASS spectrometry; Subject Term: CHEMICAL ionization mass spectrometry; Number of Pages: 6p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.4927716 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108825796&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Al-Tameemi, Osama AU - Chatterjee, Mainak AU - Kwiat, Kevin T1 - Vector quantization based QoS evaluation in cognitive radio networks. JO - Wireless Networks (10220038) JF - Wireless Networks (10220038) Y1 - 2015/08// VL - 21 IS - 6 M3 - Article SP - 1899 EP - 1911 SN - 10220038 AB - In this paper, we characterize the QoS that secondary users can expect in a cognitive radio network in the presence of primaries. To that end, we first define a $$K$$ -dimensional QoS space where each point in that space characterizes the expected QoS. We show how the operating condition of the system maps to a point in the QoS space, the quality of which is given by the corresponding QoS index. To deal with the real-valued QoS space, we use vector quantization to partition the space into finite number of regions each of which is represented by one QoS index. We argue that any operating condition of the system can be mapped to one of the pre-computed QoS indices using a simple look-up in $$O(log\,N)$$ time-thus avoiding any cumbersome computation for QoS evaluation. The proposed technique takes the power vector as its input from the power control unit which we consider as a black box. Using simulations, we illustrate how a $$K$$ -dimensional QoS space can be constructed. We choose capacity as the QoS metrics and show what the expected capacity would be for a given power vector. We also show the effect of having large number of partitions on the distortion. As for the implementation feasibility of the proposed concept, we implement the QoS space on an 8-bit microcontroller and show how the mathematically intensive operations can be computed in a short time. Further we use binary search to achieve scalability as the dimensionality of the space increases. [ABSTRACT FROM AUTHOR] AB - Copyright of Wireless Networks (10220038) is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VECTOR quantization KW - QUALITY of service KW - COGNITIVE radio (Wireless communication systems) KW - RADIO networks KW - COMPUTER users KW - Capacity KW - Cognitive radio network KW - Quality of service N1 - Accession Number: 108377495; Al-Tameemi, Osama 1; Email Address: osama@eecs.ucf.edu Chatterjee, Mainak 1; Email Address: mainak@eecs.ucf.edu Kwiat, Kevin 2; Email Address: kevin.kwiat@us.af.mil; Affiliation: 1: Electrical Engineering and Computer Science, University of Central Florida, Orlando USA 2: Air Force Research Laboratory, Information Directorate, Rome USA; Source Info: Aug2015, Vol. 21 Issue 6, p1899; Subject Term: VECTOR quantization; Subject Term: QUALITY of service; Subject Term: COGNITIVE radio (Wireless communication systems); Subject Term: RADIO networks; Subject Term: COMPUTER users; Author-Supplied Keyword: Capacity; Author-Supplied Keyword: Cognitive radio network; Author-Supplied Keyword: Quality of service; NAICS/Industry Codes: 515111 Radio Networks; Number of Pages: 13p; Document Type: Article L3 - 10.1007/s11276-014-0886-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108377495&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2015-37291-005 AN - 2015-37291-005 AU - Carretta, Thomas R. AU - King, Raymond E. T1 - Personnel selection influences on remotely piloted aircraft human-system integration. JF - Aerospace Medicine and Human Performance JO - Aerospace Medicine and Human Performance JA - Aerosp Med Hum Perform Y1 - 2015/08// VL - 86 IS - 8 SP - 736 EP - 741 CY - US PB - Aerospace Medical Assn SN - 2375-6314 SN - 2375-6322 AD - Carretta, Thomas R., Air Force Research Laboratory, 711 HPW/RHCI, 2210 8th St., Area B. Bldg. 146, Rm. 122, Wright-Patterson AFB, OH, US, 45433-7511 N1 - Accession Number: 2015-37291-005. PMID: 26387898 Other Journal Title: Aerospace Medicine; Aviation, Space, and Environmental Medicine. Partial author list: First Author & Affiliation: Carretta, Thomas R.; Air Force Research Laboratory, Wright-Patterson AFB, Wright-Patterson AFB, OH, US. Release Date: 20150928. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Human Factors Engineering; Personnel Selection. Minor Descriptor: Systems Design. Classification: Personnel Management & Selection & Training (3620); Engineering & Environmental Psychology (4000). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 6. Issue Publication Date: Aug, 2015. Copyright Statement: The Aerospace Medical Association, Alexandria, VA AB - Human-system Integration (HSI) is a complex process used to design and develop systems that integrate human capabilities and limitations in an effective and affordable manner. Effective HSI incorporates several domains, including manpower, personnel and training, human factors, environment, safety, occupational health, habitabillty, survivability, logistics. Intelligence, mobility, and command and control. To achieve effective HSI, the relationships among these domains must be considered. Although this integrated approach Is well documented, there are many instances where it is not followed. Human factors engineers typically focus on system design with little attention to the skills, abilities, and other characteristics needed by human operators. When problems with fielded systems occur, additional training of personnel is developed and conducted. Personnel selection is seldom considered during the HSI process. Complex systems such as aviation require careful selection of the individuals who will Interact with the system. Personnel selection is a two-stage process Involving select-in and select-out procedures. Select-in procedures determine which candidates have the aptitude to profit from training and represent the best investment. Select-out procedures focus on medical qualification and determine who should not enter training for medical reasons. The current paper discusses the role of personnel selection in the HSI process in the context of remotely piloted aircraft systems. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - remotely piloted aircraft KW - human-system integration KW - personnel selection KW - 2015 KW - Aircraft Pilots KW - Human Factors Engineering KW - Personnel Selection KW - Systems Design KW - 2015 DO - 10.3357/AMHP.4287.2015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-37291-005&site=ehost-live&scope=site UR - thomas.carretta@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-34428-002 AN - 2015-34428-002 AU - Walsh, Matthew M. AU - Gluck, Kevin A. T1 - Mechanisms for robust cognition. JF - Cognitive Science JO - Cognitive Science JA - Cogn Sci Y1 - 2015/08// VL - 39 IS - 6 SP - 1131 EP - 1171 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0364-0213 SN - 1551-6709 AD - Walsh, Matthew M., 711 HPW/RHAC–Cognitive Models and Agents Branch, 2620 Q Street, Building 852, Wright-Patterson AFB, OH, US, 45433 N1 - Accession Number: 2015-34428-002. PMID: 25352094 Partial author list: First Author & Affiliation: Walsh, Matthew M.; Air Force Research Laboratory, Wright‐Patterson AFB, OH, US. Other Publishers: Elsevier Science; Lawrence Erlbaum; Taylor & Francis. Release Date: 20150921. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Walsh, Matthew M. Major Descriptor: Cognitive Science; Human Factors Engineering; Technology. Minor Descriptor: Cognition. Classification: Human Factors Engineering (4010). Population: Human (10). References Available: Y. Page Count: 41. Issue Publication Date: Aug, 2015. Publication History: Accepted Date: May 9, 2014; Revised Date: Mar 14, 2014; First Submitted Date: Sep 27, 2013. Copyright Statement: All rights reserved. Cognitive Science Society, Inc. 2014. AB - To function well in an unpredictable environment using unreliable components, a system must have a high degree of robustness. Robustness is fundamental to biological systems and is an objective in the design of engineered systems such as airplane engines and buildings. Cognitive systems, like biological and engineered systems, exist within variable environments. This raises the question, how do cognitive systems achieve similarly high degrees of robustness? The aim of this study was to identify a set of mechanisms that enhance robustness in cognitive systems. We identify three mechanisms that enhance robustness in biological and engineered systems: system control, redundancy, and adaptability. After surveying the psychological literature for evidence of these mechanisms, we provide simulations illustrating how each contributes to robust cognition in a different psychological domain: psychomotor vigilance, semantic memory, and strategy selection. These simulations highlight features of a mathematical approach for quantifying robustness, and they provide concrete examples of mechanisms for robust cognition. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Robustness KW - System control KW - Redundancy KW - Adaptability KW - Cognitive systems KW - Computer simulation KW - 2015 KW - Cognitive Science KW - Human Factors Engineering KW - Technology KW - Cognition KW - 2015 U1 - Sponsor: National Research Council. Other Details: Research Associateship Award with the Air Force Research Laboratory’s Cognitive Models and Agents Branch. Recipients: Walsh, Matthew M. U1 - Sponsor: AFOSR. Grant: 13RH06COR. Recipients: Gluck, Kevin A. DO - 10.1111/cogs.12192 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-34428-002&site=ehost-live&scope=site UR - mmw188@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Carter, Jennifer L.W. AU - Sosa, John M. AU - Shade, Paul A. AU - Fraser, Hamish L. AU - Uchic, Michael D. AU - Mills, Michael J. T1 - The potential link between high angle grain boundary morphology and grain boundary deformation in a nickel-based superalloy. JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2015/07/29/ VL - 640 M3 - Article SP - 280 EP - 286 SN - 09215093 AB - Focused ion beam (FIB) based serial sectioning was utilized to characterize the morphology of two high angle grain boundaries (HAGB) in a nickel based superalloy, one that experienced grain boundary sliding (GBS) and the other experienced strain accumulation, during elevated temperature constant stress loading conditions. A custom script was utilized to serial section and collect ion-induced secondary electron images from the FIB-SEM system. The MATLAB based MIPAR TM software was utilized to align, segment and reconstruct 3D volumes from the sectioned images. Analysis of the 3D data indicates that the HAGB that exhibited GBS had microscale curvature that was planar in nature, and local serrations on the order of ±150 nm. In contrast, the HAGB that exhibited strain accumulation was not planar and had local serrations an order of magnitude greater than the other grain boundary. It is hypothesized that the serrations and the local grain boundary network are key factors in determining which grain boundaries experience GBS during creep deformation. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL grain boundaries KW - NICKEL alloys KW - DEFORMATIONS (Mechanics) KW - SURFACE morphology KW - HEAT resistant alloys KW - 3D reconstruction KW - Grain boundary sliding KW - Nickel-based superalloys KW - Serial sectioning N1 - Accession Number: 103654241; Carter, Jennifer L.W. 1; Email Address: jennifer.w.carter@case.edu Sosa, John M. 2 Shade, Paul A. 3 Fraser, Hamish L. 2 Uchic, Michael D. 3 Mills, Michael J. 1; Affiliation: 1: Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 44321, USA 2: Center for Accelerated Maturation of Materials, The Ohio State University, Columbus, OH 44321, USA 3: Air Force Research Laboratory, Materials & Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, Dayton, OH 45433, USA; Source Info: Jul2015, Vol. 640, p280; Subject Term: CRYSTAL grain boundaries; Subject Term: NICKEL alloys; Subject Term: DEFORMATIONS (Mechanics); Subject Term: SURFACE morphology; Subject Term: HEAT resistant alloys; Author-Supplied Keyword: 3D reconstruction; Author-Supplied Keyword: Grain boundary sliding; Author-Supplied Keyword: Nickel-based superalloys; Author-Supplied Keyword: Serial sectioning; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.msea.2015.05.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103654241&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jehwan Hwang AU - Jiyeon Jeon AU - Sujin Yoon AU - Byung Soo Kang AU - Deok-Kee Kim AU - Ha Sul Kim AU - Sang-Woo Kang AU - Jun Oh Kim AU - Woo-Yong Jang AU - Augustine Urbas AU - Zahyun Ku AU - Sang Jun Lee T1 - Surface plasmon resonant splitting and merging due to infrared incidence through thermal imaging lens. JO - Electronics Letters JF - Electronics Letters Y1 - 2015/07/23/ VL - 51 IS - 15 M3 - Article SP - 1170 EP - 1172 PB - Institution of Engineering & Technology SN - 00135194 AB - In previous work, the present authors discovered the resonant splitting phenomenon of a plasmonic perforated gold film (PGF), as the incident light comes in the polar angle. However, in reality, the light through the imaging lens could be incident on the PGF not only in the polar angle but also in the azimuth angle. The transmission of a PGF against the incident light is analysed in both polar and azimuth angles in spherical coordinates. To mimic the incidence through the lens, a PGF sample is rotated by simultaneously varying both types of angles as normal incidence arrives. For the measurement, the sample has been fabricated with a PGF on a semi-insulating gallium arsenide (GaAs) substrate. The measured transmission spectra show both resonant splitting and merging under TM and TE polarisations as the azimuth angle is increased. Results drawn from this work will pave the way tofully understanding the interaction between the imaging lens and the plasmonic structure (PGF). [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL imaging cameras KW - SURFACE plasmon resonance KW - GOLD films KW - AZIMUTH KW - GALLIUM arsenide KW - POLARIZATION (Electricity) N1 - Accession Number: 108471296; Jehwan Hwang 1 Jiyeon Jeon 1 Sujin Yoon 1 Byung Soo Kang 1 Deok-Kee Kim 2 Ha Sul Kim 3 Sang-Woo Kang 3 Jun Oh Kim 1 Woo-Yong Jang 4 Augustine Urbas 3 Zahyun Ku 3 Sang Jun Lee 1; Email Address: sjlee@kriss.re.kr; Affiliation: 1: Division of Industrial Metrology, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea 2: Department of Electrical Engineering, Sejong University, Seoul 143-747, Republic of Korea 3: Department of Physics, Chonnam National University, Kwangju 500-757, Republic of Korea 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: 7/23/2015, Vol. 51 Issue 15, p1170; Subject Term: THERMAL imaging cameras; Subject Term: SURFACE plasmon resonance; Subject Term: GOLD films; Subject Term: AZIMUTH; Subject Term: GALLIUM arsenide; Subject Term: POLARIZATION (Electricity); Number of Pages: 2p; Illustrations: 1 Diagram, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1049/el.2015.0481 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108471296&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lancaster, A. AU - Cook, G. AU - McDaniel, S. A. AU - Evans, J. AU - Berry, P. A. AU - Shephard, J. D. AU - Kar, A. K. T1 - Mid-infrared laser emission from Fe:ZnSe cladding waveguides. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2015/07/22/ VL - 107 IS - 3 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00036951 AB - The authors present a mid-IR depressed cladding waveguide laser in Fe:ZnSe. The laser produced a maximum output power of 76 mW at 4122 nm and laser thresholds as low as 154 mW were demonstrated. This represents a 44% reduction in threshold power compared with the bulk laser system demonstrated in this paper. The waveguide laser was found to have a narrow spectral linewidth of 6 nm FHWM compared to the 50 nm typical of bulk Fe:ZnSe lasers. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC selenide KW - IRON ions KW - DOPED semiconductors KW - CLADDING (Optics) KW - WAVEGUIDE lasers KW - INFRARED lasers N1 - Accession Number: 108546780; Lancaster, A. 1 Cook, G. 2 McDaniel, S. A. 3 Evans, J. 2 Berry, P. A. 2 Shephard, J. D. 1 Kar, A. K. 1; Email Address: a.k.kar@hw.ac.uk; Affiliation: 1: Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom 2: Air Force Research Laboratory, Sensors Directorate, Wright Patterson Air Force Base, Ohio 45433, USA 3: Leidos, Inc., 3745 Pentagon Boulevard, Beavercreek, Ohio 45431, USA; Source Info: 2015, Vol. 107 Issue 3, p1; Subject Term: ZINC selenide; Subject Term: IRON ions; Subject Term: DOPED semiconductors; Subject Term: CLADDING (Optics); Subject Term: WAVEGUIDE lasers; Subject Term: INFRARED lasers; Number of Pages: 4p; Illustrations: 2 Color Photographs, 1 Graph; Document Type: Article L3 - 10.1063/1.4927384 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108546780&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - He, Guang S. AU - Prasad, Paras N. AU - Kannan, Ramamurthi AU - Loon-Seng Tan T1 - Highly efficient and two-photon excited stimulated Rayleigh-Bragg scattering in organic solutions. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2015/07/21/ VL - 118 IS - 3 M3 - Article SP - 033102-1 EP - 033102-8 PB - American Institute of Physics SN - 00218979 AB - The properties of backward stimulated Rayleigh-Bragg scattering (SRBS) in three highly two-photon active AF-chromophores solutions in tetrahydrofuran (THF) have been investigated using 816-nm and 8-ns pump laser beam. The nonlinear reflectivity R, spectral structure, temporal behavior, and phase-conjugation capability of the backward SRBS output have been measured, respectively. Under the same experimental condition, the pump threshold for SRBS in three solution samples can be significantly (~one order of magnitude) lower than that for stimulated Brillouin scattering (SBS) in the pure solvent (THF). With the optimized concentration value and at a moderate pump energy (~1.5 mJ) level, the measured nonlinear reflectivity was R?≥?35% for the 2?cm-long solution sample, while for the SBS from a pure solvent sample of the same length was R?≈?4.7%. The peculiar features of very low pump threshold, no spectral shift, tolerant pump spectral linewidth requirement (≤1?cm-1), and phase-conjugation capability are favorable for those nonlinear photonics applications, such as highly efficiency phase-conjugation reflectors for high-brightness laser oscillator/amplifier systems, special imaging through turbid medium, self-adaptive remote optical sensing, as well as for optical rangefinder and lidar systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCANNING electron microscopy KW - RAYLEIGH model KW - RESEARCH KW - CRYSTAL photochemistry KW - PHOTONS KW - MATHEMATICAL models KW - QUANTUM electronics N1 - Accession Number: 108482413; He, Guang S. 1; Email Address: gshe@buffalo.edu Prasad, Paras N. 1 Kannan, Ramamurthi 2 Loon-Seng Tan 2; Affiliation: 1: Institute for Lasers, Photonics and Biophotonics, State University of New York at Buffalo, Buffalo, New York 14260-3000, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright-Patterson AFB, Ohio 45433-7750, USA; Source Info: 2015, Vol. 118 Issue 3, p033102-1; Subject Term: SCANNING electron microscopy; Subject Term: RAYLEIGH model; Subject Term: RESEARCH; Subject Term: CRYSTAL photochemistry; Subject Term: PHOTONS; Subject Term: MATHEMATICAL models; Subject Term: QUANTUM electronics; Number of Pages: 8p; Illustrations: 1 Black and White Photograph, 2 Diagrams, 11 Graphs; Document Type: Article L3 - 10.1063/1.4926993 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108482413&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kwak, Jae AU - Geier, Brian A. AU - Fan, Maomian AU - Gogate, Sanjay A. AU - Rinehardt, Sage A. AU - Watts, Brandy S. AU - Grigsby, Claude C. AU - Ott, Darrin K. T1 - Detection of volatile organic compounds indicative of human presence in the air. JO - Journal of Separation Science JF - Journal of Separation Science Y1 - 2015/07/15/ VL - 38 IS - 14 M3 - Article SP - 2463 EP - 2469 SN - 16159314 AB - Volatile organic compounds were collected and analyzed from a variety of indoor and outdoor air samples to test whether human-derived compounds can be readily detected in the air and if they can be associated with human occupancy or presence. Compounds were captured with thermal desorption tubes and then analyzed by gas chromatography with mass spectrometry. Isoprene, a major volatile organic compound in exhaled breath, was shown to be the best indicator of human presence. Acetone, another major breath-borne compound, was higher in unoccupied or minimally occupied areas than in human-occupied areas, indicating that its majority may be derived from exogenous sources. The association of endogenous skin-derived compounds with human occupancy was not significant. In contrast, numerous compounds that are found in foods and consumer products were detected at elevated levels in the occupied areas. Our results revealed that isoprene and many exogenous volatile organic compounds consumed by humans are emitted at levels sufficient for detection in the air, which may be indicative of human presence. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Separation Science is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS chromatography KW - ISOPRENE KW - VOLATILE organic compounds KW - GAS chromatography/Mass spectrometry (GC-MS) KW - ACETONE KW - THERMAL desorption KW - Gas chromatography with mass spectrometry KW - Human emission KW - Isoprene KW - Volatile organic compounds N1 - Accession Number: 108358802; Kwak, Jae 1,2 Geier, Brian A. 3 Fan, Maomian 4 Gogate, Sanjay A. 5 Rinehardt, Sage A. 6 Watts, Brandy S. 4 Grigsby, Claude C. 4 Ott, Darrin K. 5; Affiliation: 1: The Henry M. Jackson Foundation for the Advancement of Military Medicine, Air Force Research Laboratory 2: Research Institute of Wildlife Ecology, Department of Integrative Biology and Evolution, University of Veterinary Medicine Vienna 3: InfoSciTex Corporation, Air Force Research Laboratory 4: Air Force Research Laboratory 5: Air Force Research Laboratory, U.S. Air Force School of Aerospace Medicine 6: UES, Air Force Research Laboratory; Source Info: Jul2015, Vol. 38 Issue 14, p2463; Subject Term: GAS chromatography; Subject Term: ISOPRENE; Subject Term: VOLATILE organic compounds; Subject Term: GAS chromatography/Mass spectrometry (GC-MS); Subject Term: ACETONE; Subject Term: THERMAL desorption; Author-Supplied Keyword: Gas chromatography with mass spectrometry; Author-Supplied Keyword: Human emission; Author-Supplied Keyword: Isoprene; Author-Supplied Keyword: Volatile organic compounds; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1002/jssc.201500261 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108358802&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adomanis, Bryan M. AU - Watts, Claire M. AU - Koirala, Machhindra AU - Xianliang Liu AU - Tyler, Talmage AU - West, Kevin G. AU - Starr, Tatiana AU - Bringuier, Jonathan N. AU - Starr, Anthony F. AU - Jokerst, Nan Marie AU - Padilla, Willie J. T1 - Bi-layer metamaterials as fully functional near-perfect infrared absorbers. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2015/07/13/ VL - 107 IS - 2 M3 - Article SP - 021107-1 EP - 021107-5 PB - American Institute of Physics SN - 00036951 AB - In this letter, we discuss the design, fabrication, and experimental characterization of a bi-layer fully functional near-perfect metamaterial absorber (MMA) in the long-wavelength infrared (LWIR), which is broadband and generally insensitive to polarization up to a 60° incidence angle. A spectral absorptance of ⩾99% was attained simultaneously at multiple LWIR wavelengths, with a bandwidth of 2 μm where the absorptance is ⩾90%. This remarkable behavior is attributed to the strong mixing of coupling modes between the two resonators and the ground plane in the presence of a lossy dielectric, in which single layer structures do not exhibit. Furthermore, we show, by comparing two different MMA structures, how the absorption can be tailored by design within and across several IR subdivisions through a slight change in geometrical parameters. The bi-layer MMA has the immediate application of a functionally versatile, low-profile thermal sensor or emitter. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAMATERIALS KW - INFRARED absorption KW - LONG wavelength spectrometers KW - POLARIZATION (Electricity) KW - COUPLING reactions (Chemistry) KW - EMITTER-coupled logic circuits N1 - Accession Number: 108428052; Adomanis, Bryan M. 1; Email Address: bryan.adomanis@us.af.mil Watts, Claire M. 2 Koirala, Machhindra 2,3 Xianliang Liu 2 Tyler, Talmage 4 West, Kevin G. 5 Starr, Tatiana 5 Bringuier, Jonathan N. 5 Starr, Anthony F. 5 Jokerst, Nan Marie 4 Padilla, Willie J. 2; Email Address: willie.padilla@duke.edu; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 2: Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, USA 3: Department of Physics and TcSUH, University of Houston, Houston, Texas 77204, USA 4: Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708, USA 5: SensorMetrix, Inc., San Diego, California 92121, USA; Source Info: 7/13/2015, Vol. 107 Issue 2, p021107-1; Subject Term: METAMATERIALS; Subject Term: INFRARED absorption; Subject Term: LONG wavelength spectrometers; Subject Term: POLARIZATION (Electricity); Subject Term: COUPLING reactions (Chemistry); Subject Term: EMITTER-coupled logic circuits; Number of Pages: 5p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.4926416 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108428052&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yu Yun AU - Chao Ma AU - Xiaofang Zhai AU - Haoliang Huang AU - Dechao Meng AU - Jianlin Wang AU - Zhengping Fu AU - Ranran Peng AU - Brown, Gail J. AU - Yalin Lu T1 - Interface engineering in epitaxial growth of layered oxides via a conducting layer insertion. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2015/07/06/ VL - 107 IS - 1 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00036951 AB - There is a long-standing challenge in the fabrication of layered oxide epitaxial films due to their thermodynamic phase-instability and the large stacking layer number. Recently, the demand for high-quality thin films is strongly pushed by their promising room-temperature multiferroic properties. Here, we find that by inserting a conducting and lattice matched LaNiO3 buffer layer, high quality m=5 Bi6FeCoTi3O18 epitaxial films can be fabricated using the laser molecular beam epitaxy, in which the atomic-scale sharp interface between the film and the metallic buffer layer explains the enhanced quality. The magnetic and ferroelectric properties of the high quality Bi6FeCoTi3O18 films are studied. This study demonstrates that insertion of the conducting layer is a powerful method in achieving high quality layered oxide thin films, which opens the door to further understand the underline physics and to develop new devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPITAXY KW - CRYSTAL growth KW - FABRICATION (Manufacturing) KW - THERMODYNAMICS KW - FERROELECTRIC materials N1 - Accession Number: 108372944; Yu Yun 1,2 Chao Ma 1 Xiaofang Zhai 1,3; Email Address: xfzhai@ustc.edu.cn Haoliang Huang 1,2,3 Dechao Meng 1,2 Jianlin Wang 1,2 Zhengping Fu 1,2,3 Ranran Peng 1,2,3 Brown, Gail J. 4 Yalin Lu 1,2,3,5,6; Email Address: yllu@ustc.edu.cn; Affiliation: 1: Hefei National Laboratory for Physical Sciences, Microscale, University of Science and Technology of China, Hefei 230026, Anhui, China 2: Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, Anhui, China 3: Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, Anhui, China 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7707, USA 5: Laser Optics Research Center, Department of Physics, United States Air Force Academy, Colorado 80840, USA 6: National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, Anhui, China; Source Info: 2015, Vol. 107 Issue 1, p1; Subject Term: EPITAXY; Subject Term: CRYSTAL growth; Subject Term: FABRICATION (Manufacturing); Subject Term: THERMODYNAMICS; Subject Term: FERROELECTRIC materials; Number of Pages: 4p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.4926499 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108372944&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roberts, David A. AU - MacManus, David G. AU - Johnson, Rudy A. AU - Grove, James E. AU - Birch, Trevor J. AU - Chaplin, Ross A. T1 - Passive Attenuation of Modal Cavity Aeroacoustics Under Supersonic and Transonic Conditions. JO - AIAA Journal JF - AIAA Journal Y1 - 2015/07// VL - 53 IS - 7 M3 - Article SP - 1861 EP - 1877 SN - 00011452 AB - Open cavities exposed to a grazing flow can exhibit large pressure fluctuations, which may result in damage to stores or components carried within a weapon bay. This study investigates the use of passive resonant absorbers based on Helmholtz resonators to attenuate the problematic pressure fluctuations that arise in cavity flows, under both transonic (0.80 < M < 0.95) and supersonic (M = 1.5) conditions. The experimental investigations indicate that resonant arrays can be used to provide attenuation levels of up to 26 dB within a cavity under supersonic (M = 1.5) conditions. These supersonic designs were based on the properties of transonic devices, which also delivered high attenuation levels, with up to 15 dB attenuation for a single mode at Mach 0.95. A combined configuration with an array installed at both ends of the cavity, under supersonic conditions, provided attenuation levels up to 15 dB for multiple modes simultaneously, as well as a reduction in the broadband noise. This study investigates the attenuation mechanism for these devices, and discusses the effects of the high sound pressure levels, which arise within a resonant cavity, on the operation of the palliatives. A new semi-empirical model for resonant arrays under such acoustic environments is developed, and design guidelines of cavity applications are provided. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATTENUATION (Physics) KW - AEROACOUSTICS KW - SUPERSONIC aerodynamics KW - TRANSONIC aerodynamics KW - RESONATORS N1 - Accession Number: 103590941; Roberts, David A. 1 MacManus, David G. 1,2 Johnson, Rudy A. 3 Grove, James E. 3 Birch, Trevor J. 4 Chaplin, Ross A. 4; Affiliation: 1: Cranfield University, Bedfordshire, England MK43 OAL, United Kingdom 2: Member, AIAA 3: U.S'. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 4: Defence Science and Technology Laboratory, Flampshire, England P017 6AD, United Kingdom; Source Info: Jul2015, Vol. 53 Issue 7, p1861; Subject Term: ATTENUATION (Physics); Subject Term: AEROACOUSTICS; Subject Term: SUPERSONIC aerodynamics; Subject Term: TRANSONIC aerodynamics; Subject Term: RESONATORS; Number of Pages: 17p; Document Type: Article L3 - 10.2514/1.J053564 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103590941&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 115186552 T1 - Stable Dabigatran Levels in Anticoagulation Clinic Patients: An Unexpected Finding! AU - McGlasson, David L. AU - Fritsma, George A. Y1 - 2015///Summer2015 N1 - Accession Number: 115186552. Language: English. Entry Date: In Process. Revision Date: 20160520. Publication Type: Article. Journal Subset: Allied Health; Blind Peer Reviewed; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 8806547. SP - 159 EP - 159 JO - Clinical Laboratory Science JF - Clinical Laboratory Science JA - CLIN LAB SCI VL - 28 IS - 3 CY - Tysons Corner, Virginia PB - American Society for Clinical Laboratory Science SN - 0894-959X AD - 59th Clinical Research Division, United States Air Force, San Antonio, TX AD - Fritsma Factor , Birmingham, AL UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=115186552&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Gowayed, Y. AU - Abouzeida, E. AU - Smyth, I. AU - Ojard, G. AU - Ahmad, J. AU - Santhosh, U. AU - Jefferson, G. T1 - The role of oxidation in time-dependent response of ceramic–matrix composites. JO - Composites: Part B, Engineering JF - Composites: Part B, Engineering Y1 - 2015/07// VL - 76 M3 - Article SP - 20 EP - 30 SN - 13598368 AB - In this work, a model is constructed to account for the effect of oxidation of the fiber, fiber interface coating and surrounding matrix on the stress distribution and strain accumulation in ceramic–matrix composites. The model includes the role of the fabric architecture, the effect of porosity and the distribution of cracks in its formulation and utilizes oxidation rate constants and phenomenological models for the progress of oxidation as reported in literature. Dwell fatigue experiments were carried out for silicon carbide/silicon carbide nitride (SiC/SiNC) and Melt infiltrated silicon carbide/silicon carbide (MI SiC/SiC) composites to evaluate their time-dependent strain accumulation. Strain accumulation due to oxidation calculated by the model was compared to time-dependent strain obtained from experiment and showed that the rate of strain accumulation due to oxidation was low before the fibers were exposed to the environment but drastically increased after that. Such high rate of strain accumulation can be one of the main causes for failure of the composite. Model results showed that strain accumulation in both composites due to oxidation was dependent on the stress level with the SiC/SiNC accumulating more strain at similar stress levels. This can be explained by the higher modulus of the MI SiC/SiC that limits deformation, reducing crack density and accordingly decreasing the chance of oxygen to infiltrate the specimen and oxidize the fibers. Strain accumulation due to oxidation was also dependent on the fabric architecture and stress distribution within the unit cell. Additionally, comparing the effect of the value of the linear and parabolic oxidation rate constants reported by different researchers showed that not only is their absolute value important, but also their ratio to one another. [ABSTRACT FROM AUTHOR] AB - Copyright of Composites: Part B, Engineering is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CERAMIC-matrix composites -- Oxidation KW - STRESS concentration KW - STRAINS & stresses (Mechanics) KW - FRACTURE mechanics KW - SILICON carbide KW - A. Ceramic–matrix composites KW - B. Creep KW - B. Residual/internal stress KW - D. Mechanical testing N1 - Accession Number: 102462585; Gowayed, Y. 1; Email Address: gowayed@auburn.edu Abouzeida, E. 1 Smyth, I. 2 Ojard, G. 3 Ahmad, J. 4 Santhosh, U. 4 Jefferson, G. 5; Affiliation: 1: Department of Polymer and Fiber Engineering, Auburn University, Auburn, AL, USA 2: Pratt & Whitney, East Hartford, CT, USA 3: United Technologies Research Center, East Hartford, CT, USA 4: Structural Analytics, Inc., Carlsbad, CA, USA 5: Air Force Research Laboratory, AFRL/RXLN, Wright-Patterson AFB, OH, USA; Source Info: Jul2015, Vol. 76, p20; Subject Term: CERAMIC-matrix composites -- Oxidation; Subject Term: STRESS concentration; Subject Term: STRAINS & stresses (Mechanics); Subject Term: FRACTURE mechanics; Subject Term: SILICON carbide; Author-Supplied Keyword: A. Ceramic–matrix composites; Author-Supplied Keyword: B. Creep; Author-Supplied Keyword: B. Residual/internal stress; Author-Supplied Keyword: D. Mechanical testing; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.compositesb.2015.02.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102462585&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Quintana, Carolina AU - Millwater, Harry R. AU - Singh, Gulshan AU - Golden, Patrick T1 - Optimal allocation of testing resources for statistical simulations. JO - Engineering Optimization JF - Engineering Optimization Y1 - 2015/07// VL - 47 IS - 7 M3 - Article SP - 979 EP - 993 SN - 0305215X AB - Statistical estimates from simulation involve uncertainty caused by the variability in the input random variables due to limited data. Allocating resources to obtain more experimental data of the input variables to better characterize their probability distributions can reduce the variance of statistical estimates. The methodology proposed determines the optimal number of additional experiments required to minimize the variance of the output moments given single or multiple constraints. The method uses multivariatet-distribution and Wishart distribution to generate realizations of the population mean and covariance of the input variables, respectively, given an amount of available data. This method handles independent and correlated random variables. A particle swarm method is used for the optimization. The optimal number of additional experiments per variable depends on the number and variance of the initial data, the influence of the variable in the output function and the cost of each additional experiment. The methodology is demonstrated using a fretting fatigue example. [ABSTRACT FROM AUTHOR] AB - Copyright of Engineering Optimization is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER simulation KW - ESTIMATION theory KW - DISTRIBUTION (Probability theory) KW - PARTICLE swarm optimization KW - WISHART matrices KW - multivariate t-distribution KW - optimal experiments KW - particle swarm optimization KW - variance reduction KW - Wishart distribution N1 - Accession Number: 102391735; Quintana, Carolina 1 Millwater, Harry R. 1 Singh, Gulshan 2 Golden, Patrick 3; Affiliation: 1: Department of Mechanical Engineering, The University of Texas at San Antonio, San Antonio, Texas, USA 2: Baker Hughes, Tomball, Texas, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, Ohio, USA; Source Info: Jul2015, Vol. 47 Issue 7, p979; Subject Term: COMPUTER simulation; Subject Term: ESTIMATION theory; Subject Term: DISTRIBUTION (Probability theory); Subject Term: PARTICLE swarm optimization; Subject Term: WISHART matrices; Author-Supplied Keyword: multivariate t-distribution; Author-Supplied Keyword: optimal experiments; Author-Supplied Keyword: particle swarm optimization; Author-Supplied Keyword: variance reduction; Author-Supplied Keyword: Wishart distribution; Number of Pages: 15p; Document Type: Article L3 - 10.1080/0305215X.2014.933824 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102391735&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bruns, Jeffery AU - Zearley, Alyssa AU - George, Tommy AU - Scott-Emuakpor, Onome AU - Holycross, Casey T1 - Vibration-Based Bending Fatigue of a Hybrid Insert-Plate System. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2015/07// VL - 55 IS - 6 M3 - Article SP - 1067 EP - 1080 SN - 00144851 AB - A hybrid bending specimen system was developed to reduce material waste when using the vibration-based fatigue method to gather high cycle fatigue (HCF) data. In the vibration-based fatigue method, a base-excited plate specimen is driven into a high frequency resonant mode until failure. Compared to the axial testing methods, vibration-based failure better represents the conditions and surface-initiated cracks experienced by structural components subject to high frequency vibrations, like blades and vanes in gas turbine engines. In addition, the method produces data over 40 times faster than conventional axial testing methods. Only a small portion of the vibration-based bending specimen is needed to determine crack initiation failure. In order to reduce material waste, a hybrid bending system was designed to test a small specimen held in a reusable carrier plate, thereby reducing material costs to gather HCF data. The final optimized design, the Bruns-Zearley plate specimen, produced fatigue data using 95 % less material. The results are comparable tofatigue data acquired from standard vibration-based plate specimen methods within a 95 % confidence interval. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH cycle fatigue (Materials science) KW - GAS turbines KW - CONFIDENCE intervals KW - SINTERING KW - LASER Doppler vibrometer KW - Fatigue KW - Gas turbine engine KW - Materials KW - Testing KW - Vibration N1 - Accession Number: 103002273; Bruns, Jeffery 1 Zearley, Alyssa 1 George, Tommy 2 Scott-Emuakpor, Onome 2; Email Address: onome.scott-emuakpor@wpafb.af.mil Holycross, Casey 2; Affiliation: 1: Universal Technology Corporation, 1270 North Fairfield Road Dayton 45433 USA 2: Air Force Research Laboratory Wright-Patterson AFB, Dayton 45433 USA; Source Info: Jul2015, Vol. 55 Issue 6, p1067; Subject Term: HIGH cycle fatigue (Materials science); Subject Term: GAS turbines; Subject Term: CONFIDENCE intervals; Subject Term: SINTERING; Subject Term: LASER Doppler vibrometer; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Gas turbine engine; Author-Supplied Keyword: Materials; Author-Supplied Keyword: Testing; Author-Supplied Keyword: Vibration; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; NAICS/Industry Codes: 212210 Iron Ore Mining; Number of Pages: 14p; Document Type: Article L3 - 10.1007/s11340-015-0004-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103002273&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hansberger, Jason T1 - China's Hukou System: Markets, Migrants, and Institutional Change. JO - Governance JF - Governance Y1 - 2015/07// VL - 28 IS - 3 M3 - Article SP - 414 EP - 416 PB - Wiley-Blackwell SN - 09521895 KW - SOCIOLOGY in literature KW - NONFICTION KW - YOUNG, Jason KW - CHINA'S Hukou System: Markets, Migrants & Institutional Change (Book) N1 - Accession Number: 103381261; Hansberger, Jason 1; Affiliation: 1: United States Air Force; Source Info: Jul2015, Vol. 28 Issue 3, p414; Subject Term: SOCIOLOGY in literature; Subject Term: NONFICTION; Reviews & Products: CHINA'S Hukou System: Markets, Migrants & Institutional Change (Book); People: YOUNG, Jason; Number of Pages: 2p; Document Type: Article L3 - 10.1111/gove.12157 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103381261&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huie, Lauren M. AU - Fowler, Mark L. T1 - Strategies for information injection for networks estimating emitter location. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2015/07// VL - 51 IS - 3 M3 - Article SP - 1597 EP - 1608 SN - 00189251 AB - This paper considers the problem of emitter location in the presence of an adversary able to inject false information, where both the viewpoints of the adversary and locating network are considered. We begin by developing adversary strategies, which focus on degrading and redirecting the locating network. The locating network uses the time difference of arrival (TDOA) method and estimates the emitter location using both nonlinear least squares (LS) and the robust least median squares (LMS). Specifically, we determine the false sensor position the adversary should inject that maximally impacts the locating network by 1) minimizing the network?s accuracy, and 2) redirecting the network?s emitter location estimate. Similarly, we formulate a network?s strategy for detecting the adversary?s injection and develop a detector able to determine its presence under both adversary strategies. We present both theoretical and numerical results illustrating the effectiveness of the developed strategies. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIRELESS sensor networks KW - WIRELESS sensor nodes KW - LEAST squares KW - WIRELESS communication systems KW - JACOBIAN matrices KW - Accuracy KW - Detectors KW - Jacobian matrices KW - Maximum likelihood estimation KW - Noise KW - Wireless sensor networks N1 - Accession Number: 109994338; Huie, Lauren M. 1 Fowler, Mark L. 2; Affiliation: 1: Air Force Research Laboratory Rome, New York, USA 2: State University of New York at Binghamton, USA; Source Info: Jul2015, Vol. 51 Issue 3, p1597; Subject Term: WIRELESS sensor networks; Subject Term: WIRELESS sensor nodes; Subject Term: LEAST squares; Subject Term: WIRELESS communication systems; Subject Term: JACOBIAN matrices; Author-Supplied Keyword: Accuracy; Author-Supplied Keyword: Detectors; Author-Supplied Keyword: Jacobian matrices; Author-Supplied Keyword: Maximum likelihood estimation; Author-Supplied Keyword: Noise; Author-Supplied Keyword: Wireless sensor networks; NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 12p; Document Type: Article L3 - 10.1109/TAES.2014.120442 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109994338&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - O?connor, Alan AU - Setlur, Pawan AU - Devroye, Natasha T1 - Single-sensor RF emitter localization based on multipath exploitation. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2015/07// VL - 51 IS - 3 M3 - Article SP - 1635 EP - 1651 SN - 00189251 AB - This paper considers the problem of passive localization of a wideband RF emitter by exploiting the multipath interaction of the signal with the environment, as occurs in urban settings. The feasibility of localizing using times of arrival (TOAs) of multipath components is examined. Localization of an emitter with a known waveform in a bounded three-dimensional volume, without prior knowledge of the time of emission, is shown to be possible if there are at least five TOAs corresponding to known propagation paths. The primary contribution is a method to correctly associate measured TOAs with scattering surfaces. This method can cope with some unresolved TOAs, as well as spurious TOA measurements (clutter). Simulations are used to test the effects of scene geometry, clutter, and surface roughness on localization performance. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO frequency KW - TIME-of-arrival estimation KW - MULTIPATH channels KW - RADIO wave propagation KW - SIGNAL-to-noise ratio KW - RADIO transmitter-receivers KW - Clutter KW - Global Positioning System KW - Radio frequency KW - Receivers KW - Scattering KW - Sensors KW - Synchronization N1 - Accession Number: 109994341; O?connor, Alan 1 Setlur, Pawan 2 Devroye, Natasha 3; Affiliation: 1: Air Force Research Laboratory Wright-Patterson AFB, OH, USA 2: Wright State Research Institute Beavercreek, OH, USA 3: University of Illinois Chicago, IL, USA; Source Info: Jul2015, Vol. 51 Issue 3, p1635; Subject Term: RADIO frequency; Subject Term: TIME-of-arrival estimation; Subject Term: MULTIPATH channels; Subject Term: RADIO wave propagation; Subject Term: SIGNAL-to-noise ratio; Subject Term: RADIO transmitter-receivers; Author-Supplied Keyword: Clutter; Author-Supplied Keyword: Global Positioning System; Author-Supplied Keyword: Radio frequency; Author-Supplied Keyword: Receivers; Author-Supplied Keyword: Scattering; Author-Supplied Keyword: Sensors; Author-Supplied Keyword: Synchronization; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 17p; Document Type: Article L3 - 10.1109/TAES.2015.120807 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109994341&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Punnappurath, Abhijith AU - Rajagopalan, Ambasamudram Narayanan AU - Taheri, Sima AU - Chellappa, Rama AU - Seetharaman, Guna T1 - Face Recognition Across Non-Uniform Motion Blur, Illumination, and Pose. JO - IEEE Transactions on Image Processing JF - IEEE Transactions on Image Processing Y1 - 2015/07// VL - 24 IS - 7 M3 - Article SP - 2067 EP - 2082 SN - 10577149 AB - Existing methods for performing face recognition in the presence of blur are based on the convolution model and cannot handle non-uniform blurring situations that frequently arise from tilts and rotations in hand-held cameras. In this paper, we propose a methodology for face recognition in the presence of space-varying motion blur comprising of arbitrarily-shaped kernels. We model the blurred face as a convex combination of geometrically transformed instances of the focused gallery face, and show that the set of all images obtained by non-uniformly blurring a given image forms a convex set. We first propose a non-uniform blur-robust algorithm by making use of the assumption of a sparse camera trajectory in the camera motion space to build an energy function with l1 -norm constraint on the camera motion. The framework is then extended to handle illumination variations by exploiting the fact that the set of all images obtained from a face image by non-uniform blurring and changing the illumination forms a bi-convex set. Finally, we propose an elegant extension to also account for variations in pose. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Image Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HUMAN face recognition (Computer science) KW - NON-uniform motion KW - DIGITAL image processing KW - LIGHTING KW - DIGITAL cameras KW - Cameras KW - Convolution KW - Face KW - Face recognition KW - Image recognition KW - Lighting KW - non-uniform blur KW - Probes KW - sparsity N1 - Accession Number: 101834067; Punnappurath, Abhijith 1 Rajagopalan, Ambasamudram Narayanan 1 Taheri, Sima 2 Chellappa, Rama 2 Seetharaman, Guna 3; Affiliation: 1: Department of Electrical Engineering, IIT Madras, Chennai, India 2: Center for Automation Research, University of Maryland Institute for Advanced Computer Studies, University of Maryland, College Park, MD, USA 3: Information Directorate, Air Force Research Laboratory, Rome, NY, USA; Source Info: Jul2015, Vol. 24 Issue 7, p2067; Subject Term: HUMAN face recognition (Computer science); Subject Term: NON-uniform motion; Subject Term: DIGITAL image processing; Subject Term: LIGHTING; Subject Term: DIGITAL cameras; Author-Supplied Keyword: Cameras; Author-Supplied Keyword: Convolution; Author-Supplied Keyword: Face; Author-Supplied Keyword: Face recognition; Author-Supplied Keyword: Image recognition; Author-Supplied Keyword: Lighting; Author-Supplied Keyword: non-uniform blur; Author-Supplied Keyword: Probes; Author-Supplied Keyword: sparsity; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 335129 Other Lighting Equipment Manufacturing; Number of Pages: 16p; Document Type: Article L3 - 10.1109/TIP.2015.2412379 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101834067&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hannan, Saiful AU - Gallagher, Mark A. AU - Perrin, Anna M. T1 - Military Active and Reserve Component Mix: The Grey Space. JO - Interfaces JF - Interfaces Y1 - 2015/07//Jul/Aug2015 VL - 45 IS - 4 M3 - Article SP - 283 EP - 292 SN - 00922102 AB - The United States Air Force consists of two primary components: regular active and reserves. As a result of different deployment schedules and skill levels of personnel, these components differ in their associated costs and employee abilities. Although active-component service members are full-time employees, the majority of reserve members serve in the military on a part-time basis until activated by volunteering or mobilization. Before retiring from military service, active-component members often transition to the reserve component, resulting in a higher level of experience in these units. This enables the Air Force to retain experienced personnel at relatively lower costs and preserve its operational capability. Military analysts frequently assess policies regarding funding, resource allocation, and the balance between components using the Total Force Enterprise Analytic Framework. The five drivers of this framework are wartime demand and requirements, weapon system inventory, manpower inventory, employment policies, and cost. To simplify the evaluation and communication of component force mix options, we developed a graphical representation of the five-driver framework, which we called the grey space. This approach creates a visual representation of feasible options subject to the trade-off between cost and supply in terms of force structure size and component mix. Our depictions have enabled political constituents to better understand the feasible region. The United States Army and others analyzing the military have also adopted this approach. In this article, we discuss this graphical approach and its applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Interfaces is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FULL-time employment KW - DECISION support systems KW - PART-time employment KW - MILITARY reserve forces KW - allocation KW - decision support KW - demand KW - employment KW - full time KW - graphs KW - military KW - part time KW - resources KW - UNITED States. Air Force N1 - Accession Number: 109452021; Hannan, Saiful 1; Email Address: saiful.hannan@osd.mil; Gallagher, Mark A. 2; Email Address: mark.a.gallagher16.civ@mail.mil; Perrin, Anna M. 3; Email Address: perrina3@msu.edu; Affiliations: 1: Office of the Secretary of Defense, Pentagon, Washington, DC 20301; 2: United States Air Force, Pentagon, Washington, DC 20330; 3: Michigan State University, East Lansing, Michigan 48824; Issue Info: Jul/Aug2015, Vol. 45 Issue 4, p283; Thesaurus Term: FULL-time employment; Thesaurus Term: DECISION support systems; Thesaurus Term: PART-time employment; Subject Term: MILITARY reserve forces; Author-Supplied Keyword: allocation; Author-Supplied Keyword: decision support; Author-Supplied Keyword: demand; Author-Supplied Keyword: employment; Author-Supplied Keyword: full time; Author-Supplied Keyword: graphs; Author-Supplied Keyword: military; Author-Supplied Keyword: part time; Author-Supplied Keyword: resources ; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 10p; Illustrations: 1 Diagram, 2 Charts, 5 Graphs; Document Type: Article L3 - 10.1287/inte.2015.0795 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=109452021&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Okolo, Wendy AU - Dogan, Atilla AU - Blake, William T1 - Effect of Trail Aircraft Trim on Optimum Location in Formation Flight. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2015/07// VL - 52 IS - 4 M3 - Article SP - 1201 EP - 1213 SN - 00218669 AB - Aircraft flight generates vortices that induce nonuniform wind distribution in their wake. A trailing/follower aircraft will experience induced wind components and gradients with various magnitudes and directions, depending on its location relative to the leader. This paper explores two methods of determining the relative location for optimum formation flight, termed the sweet spot. The relative location with the highest lift-to-drag ratio on the follower is denoted as the static sweet spot. In the second method, the trail aircraft is trimmed by adjusting the thrust and control surfaces to maintain its commanded position relative to the lead. The relative location requiring the least thrust is then assigned as the dynamic sweet spot. The results showed that, depending on the trail aircraft size, the static sweet spot might differ from the dynamic sweet spot. The effect of the leader weight and follower size on both static and dynamic sweet spot was also studied. It was discovered that the static and dynamic sweet-spot location changed when the size of the trail aircraft was modified. It was also observed that the static sweet spot remained the same but the dynamic sweet spot changed when the lead aircraft weight was modified. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES -- Design & construction -- Research KW - FLIGHT KW - RESEARCH KW - AERODYNAMICS -- Mathematical models KW - AERONAUTICS -- Research KW - LIFT (Aerodynamics) N1 - Accession Number: 108955911; Okolo, Wendy 1 Dogan, Atilla 1 Blake, William 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, University of Texas at Arlington, Arlington, Texas 76019 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jul2015, Vol. 52 Issue 4, p1201; Subject Term: AIRPLANES -- Design & construction -- Research; Subject Term: FLIGHT; Subject Term: RESEARCH; Subject Term: AERODYNAMICS -- Mathematical models; Subject Term: AERONAUTICS -- Research; Subject Term: LIFT (Aerodynamics); NAICS/Industry Codes: 336411 Aircraft Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.2514/1.C032865 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108955911&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Viswanathan, Sasi P. AU - Sanyal, Amit K. AU - Leve, Frederick AU - McClamroch, N. Harris T1 - Dynamics and Control of Spacecraft With a Generalized Model of Variable Speed Control Moment Gyroscopes. JO - Journal of Dynamic Systems, Measurement, & Control JF - Journal of Dynamic Systems, Measurement, & Control Y1 - 2015/07//7/1/2015 VL - 137 IS - 7 M3 - Article SP - 1 EP - 12 SN - 00220434 AB - The attitude dynamics model for a spacecraft with a variable speed control moment gyroscope (VSCMG) is derived using the principles of variational mechanics. The resulting dynamics model is obtained in the framework of geometric mechanics, relaxing some of the assumptions made in prior literature on control moment gyroscopes (CMGs). These assumptions include symmetry of the rotor and gimbal structure, and no offset between the centers of mass of the gimbal and the rotor. The dynamics equations show the complex nonlinear coupling between the internal degrees-of-freedom associated with the VSCMG and the spacecraft base body's rotational degrees-of-freedom. This dynamics model is then further generalized to include the effects of multiple VSCMGs placed in the spacecraft base body, and sufficient conditions for nonsingular VSCMG configurations are obtained. General ideas on control of the angular momentum of the spacecraft using changes in the momentum variables of a finite number of VSCMGs are provided. A control scheme using a finite number of VSCMGs for attitude stabilization maneuvers in the absence of external torques and when the total angular momentum of the spacecraft is zero is presented. The dynamics model of the spacecraft with a finite number of VSCMGs is then simplified under the assumptions that there is no offset between the centers of mass of the rotor and gimbal, and the rotor is axisymmetric. As an example, the case of three VSCMGs with axisymmetric rotors, placed in a tetrahedron configuration inside the spacecraft, is considered. The control scheme is then numerically implemented using a geometric variational integrator (GVI). Numerical simulation results with zero and nonzero rotor offset between centers of mass of gimbal and rotor are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Dynamic Systems, Measurement, & Control is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles KW - GYROSCOPES -- Automatic control KW - ANGULAR momentum (Mechanics) KW - FINITE element method KW - ROTORS N1 - Accession Number: 108978863; Viswanathan, Sasi P. 1; Email Address: sashi@nmsu.edu Sanyal, Amit K. 2; Email Address: asanyal@nmsu.edu Leve, Frederick 3; Email Address: afrl.rvsv@kirtland.af.mil McClamroch, N. Harris 4; Email Address: nhm@engin.umich.edu; Affiliation: 1: Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, NM 88003 2: Assistant Professor Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, NM 88003 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, Albuquerque, NM 8711 4: Professor Emeritus Aerospace Engineering, University of Michigan, Ann Arbor, MI 48109-2140; Source Info: 7/1/2015, Vol. 137 Issue 7, p1; Subject Term: SPACE vehicles; Subject Term: GYROSCOPES -- Automatic control; Subject Term: ANGULAR momentum (Mechanics); Subject Term: FINITE element method; Subject Term: ROTORS; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1115/1.4029626 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108978863&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 109808735 T1 - Manual Stress Ankle Radiography Has Poor Ability to Predict Deep Deltoid Ligament Integrity in a Supination External Rotation Fracture Cohort. AU - Schottel, Patrick C. AU - Fabricant, Peter D. AU - Berkes, Marschall B. AU - Garner, Matthew R. AU - Little, Milton T.M. AU - Hentel, Keith D. AU - Mintz, Douglas N. AU - Helfet, David L. AU - Lorich, Dean G. Y1 - 2015/07//Jul/Aug2015 N1 - Accession Number: 109808735. Language: English. Entry Date: 20150630. Revision Date: 20150923. Publication Type: Journal Article; diagnostic images; research. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Perioperative Care. NLM UID: 9308427. KW - Ankle Fractures -- Radiography KW - Radiography -- Methods KW - Ligament Injuries -- Radiography KW - Ligament Injuries -- Diagnosis KW - Diagnosis, Differential KW - Supination KW - Rotation KW - Reference Values KW - Magnetic Resonance Imaging KW - Body Weights and Measures KW - Comparative Studies KW - ROC Curve KW - P-Value KW - Sensitivity and Specificity KW - Descriptive Statistics KW - Human SP - 531 EP - 535 JO - Journal of Foot & Ankle Surgery JF - Journal of Foot & Ankle Surgery JA - J FOOT ANKLE SURG VL - 54 IS - 4 CY - Philadelphia, Pennsylvania PB - W B Saunders AB - Stress ankle radiographs are routinely performed to determine deep deltoid ligament integrity in supination external rotation (SER) ankle fractures. However, variability is present in the published data regarding what medial clear space (MCS) value constitutes a positive result. The purposes of the present study were to evaluate the diagnostic accuracy of different MCS cutoff values and determine whether this clinical test could accurately discriminate between patients with and without a deep deltoid ligament disruption. MCS measurements were recorded for stress ankle injury radiographs in an SER ankle fracture cohort. Preoperative ankle magnetic resonance imaging studies, obtained for all patients, were then read independently by 2 musculoskeletal attending radiologists to determine deep deltoid ligament integrity. The MCS measurements were compared with the magnetic resonance imaging diagnosis using receiver operating characteristic analyses to determine the sensitivity, specificity, and optimal data-driven cutoff values. SER II-III patients demonstrated a mean stress MCS distance of 4.3 ± 0.98 mm compared with 5.8 ± 1.76 mm in the SER IV cohort ( p < .001). An analysis of differing MCS positive cutoff thresholds revealed that a stress MCS of 5.0 mm maximized the combined sensitivity and specificity of the external rotation test: 65.8% sensitive and 76.5% specific. Using the receiver operating characteristic curve analysis of the MCS measurement, the calculated area under the curve was 0.77, indicating inadequate discriminative ability for diagnosing SER pattern fractures with or without a deep deltoid ligament tear. Judicious use of additional diagnostic testing in patients with a stress MCS result between 4.0 mm and 5.5 mm is warranted. SN - 1067-2516 AD - Resident, Orthopaedic Trauma Service, Hospital for Special Surgery, New York, NY AD - Department of Orthopaedic Surgery, Landstuhl Regional Medical Center, Landstuhl, Germany (United States Air Force) AD - Fellow, Orthopaedic Trauma Service, Harborview Medical Center, Seattle, WA AD - Chief, Emergency and Musculoskeletal Imaging, and Associate Professor, Department of Clinical Radiology, New York Presbyterian Hospital/Weill Cornell Medical College, New York, NY AD - Associate Attending Physician, Department of Clinical Radiology, Hospital for Special Surgery, New York, NY AD - Director, Orthopaedic Trauma Service, Hospital for Special Surgery and Weill Cornell Medical College, New York Presbyterian Hospital, New York, NY AD - Associate Director, Orthopaedic Trauma Service, Hospital for Special Surgery and Weill Cornell Medical College, New York Presbyterian Hospital, New York, NY U2 - PMID: 25189335. DO - 10.1053/j.jfas.2014.07.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109808735&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Chapa, Joseph O. T1 - Afterwar: Healing the Moral Wounds of Our Soldiers. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2015/07// VL - 14 IS - 2 M3 - Book Review SP - 194 EP - 196 PB - Routledge SN - 15027570 KW - MILITARY personnel KW - NONFICTION KW - SHERMAN, Nancy KW - AFTERWAR: Healing the Moral Wounds of Our Soldiers (Book) N1 - Accession Number: 109140753; Chapa, Joseph O. 1; Affiliation: 1: Captain, US Air Force, Department of Philosophy, US Air Force Academy; Source Info: Jul2015, Vol. 14 Issue 2, p194; Subject Term: MILITARY personnel; Subject Term: NONFICTION; Reviews & Products: AFTERWAR: Healing the Moral Wounds of Our Soldiers (Book); People: SHERMAN, Nancy; Number of Pages: 3p; Document Type: Book Review L3 - 10.1080/15027570.2015.1071948 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109140753&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stout, Trevor A. AU - Gee, Kent L. AU - Neilsen, Tracianne B. AU - Wall, Alan T. AU - James, Michael M. T1 - Acoustic intensity near a high-powered military jet aircraft. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2015/07// VL - 138 IS - 1 M3 - Article SP - EL1 EP - EL7 SN - 00014966 AB - The spatial variation in vector acoustic intensity has been calculated between 100 and 3000 Hz near a high-performance military aircraft. With one engine of a tethered F-22A Raptor operating at military power, a tetrahedral intensity probe was moved to 27 locations in the geometric near and mid-fields to obtain the frequency-dependent intensity vector field. The angles of the maximum intensity region rotate from aft to sideline with increasing frequency, becoming less directional above 800 Hz. Between 100 and 400 Hz, which are principal radiation frequencies, the ray-traced dominant source region rapidly contracts and moves upstream, approaching nearly constant behavior by 1000 Hz. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACOUSTIC intensity KW - RESEARCH KW - MILITARY airplanes -- Research KW - AUDIO frequency KW - SOUND measurement KW - ACOUSTICS (Physical sciences) -- Measurement N1 - Accession Number: 108683658; Stout, Trevor A. 1; Email Address: tstout@byu.edu Gee, Kent L. 1; Email Address: kentgee@byu.edu Neilsen, Tracianne B. 1; Email Address: tbn@byu.edu Wall, Alan T. 2; Email Address: alantwall@gmail.com James, Michael M. 3; Email Address: michael.james@blueridgeresearch.com; Affiliation: 1: Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, USA 2: Air Force Research Laboratory, Battlespace Acoustics Branch, Wright-Patterson AFB, Dayton, Ohio 45433, USA 3: Blue Ridge Research and Consulting, LLC, Asheville, North Carolina 28801, USA; Source Info: Jul2015, Vol. 138 Issue 1, pEL1; Subject Term: ACOUSTIC intensity; Subject Term: RESEARCH; Subject Term: MILITARY airplanes -- Research; Subject Term: AUDIO frequency; Subject Term: SOUND measurement; Subject Term: ACOUSTICS (Physical sciences) -- Measurement; Number of Pages: 7p; Document Type: Article L3 - 10.1121/1.4921746 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108683658&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hay, Randall S. AU - Fair, Geoff E. AU - Keller, Kristin A. AU - Tidball, Travis T1 - Determination of 3-D Alumina Grain Orientation, Size, Shape, and Growth Kinetics from 2-D Data in Nextel™ 610 Fibers. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2015/07// VL - 98 IS - 7 M3 - Article SP - 2295 EP - 2306 PB - Wiley-Blackwell SN - 00027820 AB - Nextel™ 610 alumina fibers were heat-treated at 1100°C-1500°C for 1-100 h in air. Grain size distributions (GSDs) and grain orientation distributions (ODs) with respect to the fiber axis were characterized by analysis of TEM images from longitudinal fiber sections. The 2-D GSDs and ODs were characterized as ellipses. 3-D GSDs and ODs were calculated by fitting distributions of oriented oblate ellipsoids to 2-D GSDs and ODs formed by ellipsoid-section-plane intersections. The standard deviations (SDs) of log-normal GSDs consistently increased with grain size, which is not diagnostic of normal grain growth. The grain aspect ratio (α) and the tendency of the short grain axis to orient perpendicular to the fiber axis also increased with grain size, resulting in more textured fibers at larger grain sizes. Average 3-D grain sizes were larger than 2-D sizes for GSDs with small SDs, but smaller for GSDs with large SDs because of under sampling of small grains. 3-D grain growth kinetics had the same 815 kJ/mol activation energy as that found by 2-D analysis, but the grain growth exponent m of 6.0 was larger and the pre-exponential factor much smaller. Expressions for 3-D log-normal GSDs as a function of heat treatment temperature and time were determined. α-distributions and ODs were determined as a function of grain size. Methods for determining 3-D GSDs are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM oxide KW - GRAIN orientation (Materials) KW - CRYSTAL growth KW - FIBERS KW - PARTICLE size distribution KW - CHEMICAL kinetics N1 - Accession Number: 108336805; Hay, Randall S. 1 Fair, Geoff E. 1 Keller, Kristin A. 1,2 Tidball, Travis 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base 2: UES, Inc 3: Wright State University; Source Info: Jul2015, Vol. 98 Issue 7, p2295; Subject Term: ALUMINUM oxide; Subject Term: GRAIN orientation (Materials); Subject Term: CRYSTAL growth; Subject Term: FIBERS; Subject Term: PARTICLE size distribution; Subject Term: CHEMICAL kinetics; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 12p; Illustrations: 1 Black and White Photograph, 3 Diagrams, 2 Charts, 14 Graphs; Document Type: Article L3 - 10.1111/jace.13572 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108336805&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rasna, M.V. AU - Cmok, L. AU - Evans, D.R. AU - Mertelj, A. AU - Dhara, Surajit T1 - Phase transitions, optical, dielectric and viscoelastic properties of colloidal suspensions of BaTiO 3 nanoparticles and cyanobiphenyl liquid crystals. JO - Liquid Crystals JF - Liquid Crystals Y1 - 2015/07// VL - 42 IS - 7 M3 - Article SP - 1059 EP - 1067 SN - 02678292 AB - We report experimental studies on the phase transitions and physical properties of colloidal suspensions of BaTiO3nanoparticles and two cyanobiphenyl liquid crystals (4-pentyl-4ʹ-cyanobiphenyl and 4-octyl-4ʹ-cyanobiphenyl). From the differential scanning calorimetric measurements, we show that the nanoparticles have antagonistic effect on the isotropic to nematic and nematic to smectic-A phase transitions. The birefringence, dielectric anisotropy and splay elastic constant remain almost unchanged, whereas the bend elastic constant and rotational viscosity decrease considerably. The experimental results are discussed based on the possible contribution of BaTiO3nanoparticles and free surfactant molecules in the suspensions. [ABSTRACT FROM AUTHOR] AB - Copyright of Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHASE transformations (Physics) KW - VISCOELASTICITY KW - BARIUM titanate KW - METAL nanoparticles KW - LIQUID crystals KW - DIFFERENTIAL scanning calorimetry KW - liquid crystals KW - nanoparticles KW - phase transitions KW - viscoelastic properties N1 - Accession Number: 108698617; Rasna, M.V. 1 Cmok, L. 2 Evans, D.R. 3 Mertelj, A. 4 Dhara, Surajit 1; Affiliation: 1: School of Physics, University of Hyderabad, Hyderabad, India 2: Department of Physics, University of Ljubljana, Ljubljana, Slovenia 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH, USA 4: J. Stefan Institute, Ljubljana, Slovenia; Source Info: Jul2015, Vol. 42 Issue 7, p1059; Subject Term: PHASE transformations (Physics); Subject Term: VISCOELASTICITY; Subject Term: BARIUM titanate; Subject Term: METAL nanoparticles; Subject Term: LIQUID crystals; Subject Term: DIFFERENTIAL scanning calorimetry; Author-Supplied Keyword: liquid crystals; Author-Supplied Keyword: nanoparticles; Author-Supplied Keyword: phase transitions; Author-Supplied Keyword: viscoelastic properties; Number of Pages: 9p; Document Type: Article L3 - 10.1080/02678292.2015.1021719 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108698617&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Poling, B.S. AU - Brown, J.L. AU - Heller, E.R. AU - Stumpff, B. AU - Beckman, J.A. AU - Hilton, A.M. T1 - Performance of commercial foundry-level AlGaN/GaN HEMTs after hot electron stressing. JO - Microelectronics Reliability JF - Microelectronics Reliability Y1 - 2015/07// VL - 55 IS - 8 M3 - Article SP - 1187 EP - 1191 SN - 00262714 AB - The performance degradation of commercial foundry level GaN HEMTs placed under a constant-power drain voltage step-stress test has been studied. By utilizing electroluminescence measurement techniques to optimize hot electron stress testing conditions (Meneghini, 2012), no significant permanent changes in saturation current ( I dss ), transconductance (Gm), and threshold voltage ( V th ) can be seen after stress testing of drain voltages from 30 V up to 200 V. We observe little permanent degradation due to hot electron effects in GaN HEMTs at these extreme operating conditions and it is inferred that other considerations, such as key dimensions in channel or peak electric field (Chynoweth, 1958; Zhang and Singh, 2001) [2,3], are more relevant to physics of failure than drain bias alone. [ABSTRACT FROM AUTHOR] AB - Copyright of Microelectronics Reliability is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM gallium nitride KW - MODULATION-doped field-effect transistors KW - THRESHOLD voltage KW - ELECTROLUMINESCENCE KW - HOT carriers KW - Electroluminescence KW - Gallium nitride (GaN) KW - High electron mobility transistors (HEMTs) KW - Hot electron N1 - Accession Number: 108809811; Poling, B.S. 1 Brown, J.L. 2 Heller, E.R. 3 Stumpff, B. 2 Beckman, J.A. 4 Hilton, A.M. 2; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH, United States 2: Wyle, Dayton, OH, United States 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH, United States 4: Southwestern Ohio Council for Higher Education, Dayton, OH, United States; Source Info: Jul2015, Vol. 55 Issue 8, p1187; Subject Term: ALUMINUM gallium nitride; Subject Term: MODULATION-doped field-effect transistors; Subject Term: THRESHOLD voltage; Subject Term: ELECTROLUMINESCENCE; Subject Term: HOT carriers; Author-Supplied Keyword: Electroluminescence; Author-Supplied Keyword: Gallium nitride (GaN); Author-Supplied Keyword: High electron mobility transistors (HEMTs); Author-Supplied Keyword: Hot electron; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.microrel.2015.05.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108809811&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eden, Paul R. AU - Herring III, Cordy F. T1 - Group B streptococcus testing. JO - MLO: Medical Laboratory Observer JF - MLO: Medical Laboratory Observer Y1 - 2015/07// VL - 47 IS - 7 M3 - Article SP - 52 EP - 52 PB - NP Communications, LLC SN - 05807247 AB - The article discusses Group B strep (GBS) or Streptococcus agalactiae testing and improvement of organism discovery and identification with next-generation methods of testing. Topics covered include threats of GBS infection in mothers to the health of their newborn and Centers of Disease Control and Prevention (CDC) advise on vaginal GBS for pregnant women. Also mentioned are traditional GBS procedure using maconkey agar plates, antimicrobials in Todd-Hewitt broth and molecular tests for GBS. KW - COMMUNICABLE diseases -- Prevention KW - FETAL diseases KW - PREGNANCY complications KW - PREVENTION KW - STREPTOCOCCAL diseases -- Prevention KW - STREPTOCOCCAL diseases KW - VERTICAL transmission (Communicable diseases) KW - BACTERIAL meningitis KW - AGGLUTINATION tests KW - GESTATIONAL age KW - HOST-bacteria relationships KW - MICROBIAL sensitivity tests KW - MICROBIOLOGY -- Technique KW - MOLECULAR diagnosis KW - PREGNANT women KW - PRENATAL care KW - STREPTOCOCCUS KW - URINALYSIS KW - PREGNANCY KW - RISK factors KW - TRANSMISSION N1 - Accession Number: 103674314; Eden, Paul R. 1 Herring III, Cordy F. 2; Affiliation: 1: Molecular Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, 711 HPW/RHDJ, Air Force Research Laboratory, Wright Patterson AFB, OH 2: 673d MDSS, SGSL, Elmendorf AFB. 99506-3702, AK; Source Info: Jul2015, Vol. 47 Issue 7, p52; Subject Term: COMMUNICABLE diseases -- Prevention; Subject Term: FETAL diseases; Subject Term: PREGNANCY complications; Subject Term: PREVENTION; Subject Term: STREPTOCOCCAL diseases -- Prevention; Subject Term: STREPTOCOCCAL diseases; Subject Term: VERTICAL transmission (Communicable diseases); Subject Term: BACTERIAL meningitis; Subject Term: AGGLUTINATION tests; Subject Term: GESTATIONAL age; Subject Term: HOST-bacteria relationships; Subject Term: MICROBIAL sensitivity tests; Subject Term: MICROBIOLOGY -- Technique; Subject Term: MOLECULAR diagnosis; Subject Term: PREGNANT women; Subject Term: PRENATAL care; Subject Term: STREPTOCOCCUS; Subject Term: URINALYSIS; Subject Term: PREGNANCY; Subject Term: RISK factors; Subject Term: TRANSMISSION; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103674314&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 109816989 T1 - Group B streptococcus testing. AU - Eden, Paul R. AU - Herring III, Cordy F. Y1 - 2015/07// N1 - Accession Number: 109816989. Language: English. Entry Date: 20150709. Revision Date: 20150923. Publication Type: Journal Article. Journal Subset: Allied Health; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Laboratory Diagnosis; Obstetric Care; Women's Health. NLM UID: 0225602. KW - Streptococcus -- Analysis -- In Pregnancy KW - Streptococcal Infections -- Prevention and Control -- In Pregnancy KW - Pregnancy Complications, Infectious -- Prevention and Control KW - Microbiological Techniques -- In Pregnancy KW - Prenatal Care KW - Pregnancy KW - Female KW - Disease Transmission, Vertical -- Prevention and Control KW - Streptococcal Infections -- Transmission -- In Pregnancy KW - Streptococcus -- Transmission KW - Gestational Age KW - Fetus KW - Infant, Newborn KW - Fetal Diseases -- Risk Factors KW - Meningitis, Bacterial -- Risk Factors KW - Urinalysis KW - Bacterial Colonization KW - Agglutination Tests KW - Molecular Diagnostic Techniques KW - Microbial Culture and Sensitivity Tests KW - Expectant Mothers SP - 52 EP - 52 JO - MLO: Medical Laboratory Observer JF - MLO: Medical Laboratory Observer JA - MLO VL - 47 IS - 7 CY - Sarasota, Florida PB - NP Communications, LLC SN - 0580-7247 AD - Molecular Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, 711 HPW/RHDJ, Air Force Research Laboratory, Wright Patterson AFB, OH AD - 673d MDSS, SGSL, Elmendorf AFB. 99506-3702, AK U2 - PMID: 26299155. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109816989&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Murphy, Neil R. AU - Gallagher, Regina C. AU - Sun, Lirong AU - Jones, John G. AU - Grant, John T. T1 - Optical and chemical properties of mixed-valent rhenium oxide films synthesized by reactive DC magnetron sputtering. JO - Optical Materials JF - Optical Materials Y1 - 2015/07// VL - 45 M3 - Article SP - 191 EP - 196 SN - 09253467 AB - Mixed-valent rhenium oxide thin films were deposited using reactive magnetron sputtering employing a metallic rhenium target within an oxygen–argon environment. The oxygen and argon flow rates were systematically varied, while the extinction coefficient, k , of the deposited layers was monitored using in situ spectroscopic ellipsometry. In situ monitoring was used to identify absorption features specific to ReO 3 , namely, the minimization of k brought on by the gap between interband absorption features in the UV at 310 nm and the onset of free electron absorption at wavelengths above 540 nm. Based on these results, oxygen flow ratios of 50% and 60% were shown to produce films having optical properties characteristic of ReO 3 , and thus, were selected for detailed ex situ characterization. Chemical analysis via X-ray photoelectron spectroscopy confirmed that all films consisted largely of ReO 3 , but had some contributions from Re 2 O 3 , ReO 2 and Re 2 O 7 . Additional monitoring of the chemistry, as a function of environmental exposure time, indicated a correlation between structural instability and the presence of Re 2 O 3 and Re 2 O 7 in the films. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RHENIUM compounds KW - OXIDE coating KW - MAGNETRON sputtering KW - OPTICAL properties KW - MATERIALS science KW - Ellipsometry KW - Magnetron KW - Rhenium oxide KW - Sputtering KW - Thin films KW - XPS N1 - Accession Number: 102099536; Murphy, Neil R. 1; Email Address: neil.murphy.1@us.af.mil Gallagher, Regina C. 2 Sun, Lirong 3 Jones, John G. 1 Grant, John T. 3,4; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base (WPAFB), Dayton, OH 45433, USA 2: Southwestern Ohio Council for Higher Education, 3155 Research Blvd., Suite 204, Dayton, OH 45420, USA 3: General Dynamics Information Technology, 5100 Springfield Street, Dayton, OH 45431, USA 4: Research Institute, University of Dayton, 300 College Park, Dayton, OH 45469, USA; Source Info: Jul2015, Vol. 45, p191; Subject Term: RHENIUM compounds; Subject Term: OXIDE coating; Subject Term: MAGNETRON sputtering; Subject Term: OPTICAL properties; Subject Term: MATERIALS science; Author-Supplied Keyword: Ellipsometry; Author-Supplied Keyword: Magnetron; Author-Supplied Keyword: Rhenium oxide; Author-Supplied Keyword: Sputtering; Author-Supplied Keyword: Thin films; Author-Supplied Keyword: XPS; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.optmat.2015.03.035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102099536&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 109831011 T1 - Biological Perspectives. AU - Kowalski, Peter C. AU - Belcher, David C. AU - Keltner, Norman L. AU - Dowben, Jonathan S. Y1 - 2015/07// N1 - Accession Number: 109831011. Language: English. Entry Date: 20150716. Revision Date: 20160630. Publication Type: Journal Article; case study. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. NLM UID: 0401133. KW - Huntington's Disease -- Complications KW - Dementia -- Risk Factors KW - Depression -- Risk Factors KW - Suicidal Ideation -- Risk Factors KW - Male KW - Adult KW - Paroxetine -- Administration and Dosage KW - Olanzapine -- Administration and Dosage SP - 157 EP - 161 JO - Perspectives in Psychiatric Care JF - Perspectives in Psychiatric Care JA - PERSPECT PSYCHIATR CARE VL - 51 IS - 3 CY - Malden, Massachusetts PB - Wiley-Blackwell SN - 0031-5990 AD - Private Practice AD - Department of Psychiatry, United States Air Force AD - School of Nursing, University of Alabama at Birmingham AD - Pediatric and Behavioral Health Service, Brooke Army Medical Center U2 - PMID: 26010510. DO - 10.1111/ppc.12121 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109831011&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Look, D. C. AU - Leedy, K. D. T1 - Optical measurements and mapping in Ga- and Al-doped ZnO and Sn-doped In2O3. JO - Physica Status Solidi. A: Applications & Materials Science JF - Physica Status Solidi. A: Applications & Materials Science Y1 - 2015/07// VL - 212 IS - 7 M3 - Article SP - 1427 EP - 1432 SN - 18626300 AB - Hall-effect/conductivity measurements in TCO materials such as Ga-doped ZnO (GZO), Al-doped ZnO (AZO), and Sn-doped In2O3 (ITO) determine Hall mobility μH and sheet carrier concentration ns directly by measurements of current, voltage, and magnetic field. If thickness d is known, then ns can be converted into volume concentration n = ns/ d. Optical measurements, on the other hand, determine analogous quantities μopt and nopt indirectly, usually by invoking the Drude model of the dielectric constant. Here we compare μopt and nopt obtained by Drude analysis of reflection, transmission, and spectroscopic-ellipsometry (SE) measurements, with μH and n. Although reasonably good agreement between Hall effect and optical parameters can be obtained with all of these techniques, SE is especially attractive for non-destructive, high-density mapping of μ and n. Moreover, we can use degenerate scattering theory to convert maps of μ and n into maps of donor and acceptor concentration. This new mapping methodology is applied to GZO and ITO. [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi. A: Applications & Materials Science is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL measurements KW - ZINC oxide KW - SPECTRUM analysis KW - DRUDE theory KW - PERMITTIVITY KW - ellipsometry KW - Hall effect KW - In2O3 KW - indium tin oxide KW - ZnO N1 - Accession Number: 103642043; Look, D. C. 1,2,3 Leedy, K. D. 3; Affiliation: 1: Semiconductor Research Center, Wright State University 2: Wyle Laboratories, Inc. 3: Air Force Research Laboratory Sensors Directorate, Wright-Patterson Air Force Base; Source Info: Jul2015, Vol. 212 Issue 7, p1427; Subject Term: OPTICAL measurements; Subject Term: ZINC oxide; Subject Term: SPECTRUM analysis; Subject Term: DRUDE theory; Subject Term: PERMITTIVITY; Author-Supplied Keyword: ellipsometry; Author-Supplied Keyword: Hall effect; Author-Supplied Keyword: In2O3; Author-Supplied Keyword: indium tin oxide; Author-Supplied Keyword: ZnO; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1002/pssa.201532020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103642043&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CASE AU - Galvagno, Samuel M AU - Brayanov, Jordan AU - Corneille, Michael G AU - Voscopoulos, Christopher J AU - Sordo, Salvador AU - Ladd, Diane AU - Freeman, Jenny T1 - Non-invasive respiratory volume monitoring in patients with traumatic thoracic injuries. JO - Trauma JF - Trauma Y1 - 2015/07// VL - 17 IS - 3 M3 - Case Study SP - 219 EP - 223 PB - Sage Publications, Ltd. SN - 14604086 AB - The article presents a case study that monitor non-invasive respiratory volume in patients with traumatic thoracic injuries. Three intensive care unit patients with three or more rib fractures were monitor and it was found that respiratory volume monitor can generate unilateral respiratory tidal measurements and respiratory rate in patients with traumatic thoracic injuries. KW - RESPIRATORY diseases -- Diagnosis KW - ACTIVE oxygen in the body KW - ALGORITHMS KW - BLUNT trauma KW - CHEST (Anatomy) -- Wounds & injuries KW - INTENSIVE care units KW - PATIENT monitoring KW - RESPIRATORY measurements KW - PILOT projects KW - RIBS (Anatomy) -- Fractures KW - DISEASE complications KW - impedance monitoring KW - non-invasive pulmonary monitoring KW - Respiratory monitoring KW - rib fractures KW - thoracic trauma N1 - Accession Number: 103186758; Galvagno, Samuel M 1 Brayanov, Jordan 2 Corneille, Michael G 3 Voscopoulos, Christopher J 4 Sordo, Salvador 3 Ladd, Diane 5 Freeman, Jenny 2; Affiliation: 1: Department of Anesthesiology, University of Maryland School of Medicine, Baltimore, MD, USA, Program in Trauma, Shock Trauma Center Divisions of Trauma Anesthesiology and Critical Care Medicine, University of Maryland School of Medicine, Baltimore, MD, USA, United States Air Force Reserve, Davis Monthan Air Force Base, AZ, USA 2: Respiratory Motion, Inc., Waltham, MA, USA 3: Department of Surgery, University of Texas Health Science Center, San Antonio, TX, USA 4: Department of Anesthesiology, Pain and Perioperative Medicine, Brigham and Woman’s Hospital, Harvard Medical School, Boston, MA, USA 5: Respiratory Motion, Inc., Waltham, MA, USA, West Virginia University, Morgantown, WV, USA dladd@respiratorymotion.com; Source Info: Jul2015, Vol. 17 Issue 3, p219; Subject Term: RESPIRATORY diseases -- Diagnosis; Subject Term: ACTIVE oxygen in the body; Subject Term: ALGORITHMS; Subject Term: BLUNT trauma; Subject Term: CHEST (Anatomy) -- Wounds & injuries; Subject Term: INTENSIVE care units; Subject Term: PATIENT monitoring; Subject Term: RESPIRATORY measurements; Subject Term: PILOT projects; Subject Term: RIBS (Anatomy) -- Fractures; Subject Term: DISEASE complications; Author-Supplied Keyword: impedance monitoring; Author-Supplied Keyword: non-invasive pulmonary monitoring; Author-Supplied Keyword: Respiratory monitoring; Author-Supplied Keyword: rib fractures; Author-Supplied Keyword: thoracic trauma; Number of Pages: 5p; Illustrations: 1 Color Photograph, 1 Chart, 2 Graphs; Document Type: Case Study L3 - 10.1177/1460408614551977 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103186758&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 109798051 T1 - Non-invasive respiratory volume monitoring in patients with traumatic thoracic injuries. AU - Galvagno, Samuel M AU - Brayanov, Jordan AU - Corneille, Michael G AU - Voscopoulos, Christopher J AU - Sordo, Salvador AU - Ladd, Diane AU - Freeman, Jenny Y1 - 2015/07// N1 - Accession Number: 109798051. Language: English. Entry Date: 20150727. Revision Date: 20150923. Publication Type: Journal Article; case study; pictorial; research; tables/charts; tracings. Journal Subset: Biomedical; Europe; UK & Ireland. Special Interest: Emergency Care. NLM UID: 100883690. KW - Thoracic Injuries -- Complications KW - Respiration Disorders -- Diagnosis KW - Tidal Volume KW - Monitoring, Physiologic -- Methods KW - Intensive Care Units KW - Rib Fractures KW - Wounds, Nonpenetrating KW - Algorithms KW - Human KW - Adult KW - Male KW - Middle Age KW - Oxygen Saturation KW - Pilot Studies KW - Respiratory Rate SP - 219 EP - 223 JO - Trauma JF - Trauma JA - TRAUMA VL - 17 IS - 3 CY - PB - Sage Publications, Ltd. SN - 1460-4086 AD - Department of Anesthesiology, University of Maryland School of Medicine, Baltimore, MD, USA, Program in Trauma, Shock Trauma Center Divisions of Trauma Anesthesiology and Critical Care Medicine, University of Maryland School of Medicine, Baltimore, MD, USA, United States Air Force Reserve, Davis Monthan Air Force Base, AZ, USA AD - Respiratory Motion, Inc., Waltham, MA, USA AD - Department of Surgery, University of Texas Health Science Center, San Antonio, TX, USA AD - Department of Anesthesiology, Pain and Perioperative Medicine, Brigham and Woman’s Hospital, Harvard Medical School, Boston, MA, USA AD - Respiratory Motion, Inc., Waltham, MA, USA, West Virginia University, Morgantown, WV, USA dladd@respiratorymotion.com DO - 10.1177/1460408614551977 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109798051&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2015-32024-002 AN - 2015-32024-002 AU - Kowalski, Peter C. AU - Belcher, David C. AU - Keltner, Norman L. AU - Dowben, Jonathan S. T1 - Biological perspectives: Huntington’s disease. JF - Perspectives in Psychiatric Care JO - Perspectives in Psychiatric Care JA - Perspect Psychiatr Care Y1 - 2015/07// VL - 51 IS - 3 SP - 157 EP - 161 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0031-5990 SN - 1744-6163 AD - Keltner, Norman L. N1 - Accession Number: 2015-32024-002. PMID: 26010510 Partial author list: First Author & Affiliation: Kowalski, Peter C.; Private Practice, Fort Worth, TX, US. Other Publishers: Blackwell Publishing. Release Date: 20150914. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Drug Therapy; Huntingtons Disease; Neurodegenerative Diseases; Olanzapine. Minor Descriptor: Psychiatric Symptoms. Classification: Medical Treatment of Physical Illness (3363). Population: Human (10); Male (30). Age Group: Adulthood (18 yrs & older) (300); Thirties (30-39 yrs) (340). Methodology: Clinical Case Study. References Available: Y. Page Count: 5. Issue Publication Date: Jul, 2015. Copyright Statement: Wiley Periodicals, Inc. 2015. AB - This article briefs the ways to understand and treat the cognitive and psychiatric symptoms of Huntington’s Disease (HD). Huntington’s disease, or HD, is a progressive inherited neurodegenerative disorder which causes disturbances in movement; specifically, choreiform or involuntary and non-repetitive dance-like movements. It also causes a specific type of dementia and a variety of psychiatric disturbances such as depression, agitation, irritability, apathy, anxiety, delusions, and hallucinations. HD has an irreversible and fatal course and the underlying condition itself is currently untreatable. A 34-year-old male patient with HD, referred by a movement disorder neurological specialist, presented with suicidal thoughts, anger, irritability, disrupted sleep patterns, forgetfulness, impulsivity which involved stealing money from family members, and gambling away the $4,000 which he had stolen. He displayed general inactivity and social isolation, and had experienced a gradual loss of autonomy and self direction in his functioning. Medication management and supportive psychotherapy were recommended, and he met in bimonthly follow-up sessions. He was prescribed paroxetine, initially at 20 mg/day, and dosing was increased over subsequent visits because of incomplete responsiveness at lower doses. Later, olanzapine at 2.5 mg nightly was added to address sleep and anxiety difficulties, and then increased to 5 mg per night. His mood and irritability improved and participation in HD support groups and end-of-life planning was encouraged, but he was reluctant to undertake these efforts at the time of this report. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - medication management KW - neurodegenerative disorder KW - psychiatric symptoms KW - Huntington’s Disease KW - 2015 KW - Drug Therapy KW - Huntingtons Disease KW - Neurodegenerative Diseases KW - Olanzapine KW - Psychiatric Symptoms KW - 2015 DO - 10.1111/ppc.12121 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-32024-002&site=ehost-live&scope=site UR - normankeltner@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-15891-001 AN - 2015-15891-001 AU - Rowan, Anderson B. AU - Travis, Wendy J. AU - Shwalb, David A. AU - Isler, William C. AU - Park, Jisuk AU - Kimura, Jennifer T1 - Postdeployment psychological health and interpersonal problems among Air Force mental health personnel. JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2015/07// VL - 27 IS - 4 SP - 242 EP - 251 CY - US PB - Educational Publishing Foundation SN - 0899-5605 SN - 1532-7876 AD - Rowan, Anderson B., 48 MDOS/CC, Unit 5115, APO AE 09461, England N1 - Accession Number: 2015-15891-001. Partial author list: First Author & Affiliation: Rowan, Anderson B.; Department of Defense, United States Air Force, Royal Air Force Lakenheath, England. Other Publishers: Lawrence Erlbaum; Taylor & Francis. Release Date: 20150413. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Mental Health; Mental Health Personnel; Military Deployment; Military Personnel; Posttraumatic Stress Disorder. Minor Descriptor: Alcohol Abuse; Conflict; Interpersonal Interaction; Symptoms. Classification: Psychological Disorders (3210); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Post-Deployment Health Re-Assessment; Patient Health Questionnaire-2; Primary Care Posttraumatic Stress Disorder Screen; Alcohol Use Disorders Identification Test-Consumption Measure; Interpersonal Problems Measure [Appended]. Methodology: Empirical Study; Interview; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Jul, 2015. Publication History: First Posted Date: Apr 13, 2015; Accepted Date: Feb 26, 2015; Revised Date: Feb 24, 2015; First Submitted Date: Nov 10, 2014. AB - This study is one of the first to use validated screening measures to examine the rates of self-reported mental health and interpersonal problems following deployment of military mental health personnel (MMHP). Research has examined the impact of deployment on military personnel finding 10.2% to 29.0% screen positive for at least one mental health problem. However, little is known about impacts of deployment among MMHP. Utilizing health data collected three to twelve months post-deployment from a sample of 759 Air Force MMHP, this study examined rates of positive screens for psychological health or interpersonal problems, subsequent confirmation of positive screens by a medical provider upon examination, and the demographic characteristics associated with psychological health or interpersonal problems. The study found 13.9% screened positive for 'possible or probable PTSD,' 4.6% for depressive symptoms, 3.9% for alcohol problems, and 12.6% for interpersonal problems. In total, nearly 26% screened positive for one or more psychological or interpersonal problem. Of those who screened positive, 48.5% of depressive problems, 36.0% of PTSD, 20.0% of alcohol problems and 29.7% of interpersonal problems were confirmed upon subsequent examination by a medical provider. Those who screened positive were more likely to be (a) female, (b) separated, widowed, or divorced, (c) a mental health nurse or psychiatric nurse practitioner, and (d) deployed to Iraq or Afghanistan. The significance, limitations, and implications of the results, along with recommendations for future research are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - military KW - postdeployment KW - mental health personnel KW - posttraumatic stress KW - psychological health KW - 2015 KW - Mental Health KW - Mental Health Personnel KW - Military Deployment KW - Military Personnel KW - Posttraumatic Stress Disorder KW - Alcohol Abuse KW - Conflict KW - Interpersonal Interaction KW - Symptoms KW - 2015 DO - 10.1037/mil0000076 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-15891-001&site=ehost-live&scope=site UR - anderson.rowan@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-25682-004 AN - 2015-25682-004 AU - Tossell, Chad C. AU - Kortum, Philip AU - Shepard, Clayton AU - Rahmati, Ahmad AU - Zhong, Lin T1 - You can lead a horse to water but you cannot make him learn: Smartphone use in higher education. JF - British Journal of Educational Technology JO - British Journal of Educational Technology JA - Br J Educ Technol Y1 - 2015/07// VL - 46 IS - 4 SP - 713 EP - 724 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0007-1013 SN - 1467-8535 AD - Kortum, Philip, Rice University, 6100 Main Street, MS 25, Houston, TX, US, 77005 N1 - Accession Number: 2015-25682-004. Partial author list: First Author & Affiliation: Tossell, Chad C.; Continuous Learning Branch, United States Air Force Research Laboratory, Wright-Patterson AFB, OH, US. Other Publishers: Blackwell Publishing. Release Date: 20150824. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Academic Achievement; Computer Assisted Instruction; Higher Education; Technology; Cellular Phones. Minor Descriptor: Classrooms; Colleges. Classification: Curriculum & Programs & Teaching Methods (3530). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: Jul, 2015. Copyright Statement: British Educational Research Association. 2014. AB - Smartphone technology is penetrating world markets and becoming ubiquitous in most college settings. This study takes a naturalistic approach to explore the use of these devices to support student learning. Students that had never used a smartphone were recruited to participate and reported on their expectations of the value of smartphones to achieve their educational goals. Instrumented iPhones that logged device usage were then distributed to these students to use freely over the course of 1 year. After the study, students again reported on the actual value of their smartphones to support their educational goals. We found that students' reports changed substantially before and after the study; specifically, the utility of the smartphone to help with education was perceived as favorable prior to use, and then, by the end of the study, they viewed their phones as detrimental to their educational goals. Although students used their mobile device for informal learning and access to school resources according to the logged data, they perceived their iPhones as a distraction and a competitor to requisite learning for classroom performance. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - smartphone use KW - higher education KW - student learning KW - educational goals KW - classroom performance KW - 2015 KW - Academic Achievement KW - Computer Assisted Instruction KW - Higher Education KW - Technology KW - Cellular Phones KW - Classrooms KW - Colleges KW - 2015 U1 - Sponsor: National Science Foundation. Grant: HCC/IIS 0803556. Recipients: No recipient indicated DO - 10.1111/bjet.12176 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-25682-004&site=ehost-live&scope=site UR - pkortum@rice.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Seastrand, Simona AU - Serra, Yolande AU - Castro, Christopher AU - Ritchie, Elizabeth T1 - The dominant synoptic-scale modes of North American monsoon precipitation. JO - International Journal of Climatology JF - International Journal of Climatology Y1 - 2015/06/30/ VL - 35 IS - 8 M3 - Article SP - 2019 EP - 2032 PB - John Wiley & Sons, Inc. SN - 08998418 AB - ABSTRACT In this study, we explore the mechanisms of synoptic rainfall variability using observations from the Tropical Rainfall Measuring Mission satellite. Although previously shown to have an important impact on North American monsoon rainfall, tropical cyclones are excluded from this analysis, in order to focus on more frequent synoptic disturbances within the region. A rotated empirical orthogonal function (EOF) analysis of North American monsoon rainfall during June to September 2002-2009 suggests that low-level tropical disturbances contribute to the leading two modes of precipitation variability within this region. These disturbances result in gulf surges or low-level surges of moisture up the Gulf of California, and provide a key moisture source to facilitate the development of organized convection. In the first mode, the low-level trough brings precipitation to lower elevations along the western slopes of the Sierra Madre Occidental south of Hermosillo, Mexico and over the southern Baja Peninsula. In the second mode, the low-level trough interacts with an upper-level inverted trough enhancing precipitation into the southwestern United States and northwest Mexico. In particular, the upper-level trough contributes to the easterly to northeasterly shear across the region, favouring mesoscale convective organization and enhanced deep convection over the Sierra Madre Occidental and higher elevations in southeast Arizona. The EOF methodology offers an objective approach for determining the dominant modes of precipitation for the monsoon region useful for identifying past and monitoring future low-frequency impacts on these modes. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Climatology is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Synoptic climatology KW - Precipitation (Meteorology) KW - Precipitation variability KW - Monsoons -- Environmental aspects KW - North America -- Environmental conditions KW - easterly waves KW - gulf surge KW - mesoscale convective systems KW - North American monsoon KW - upper-level inverted troughs N1 - Accession Number: 103382774; Seastrand, Simona 1,2; Serra, Yolande 3; Castro, Christopher 3; Ritchie, Elizabeth 3; Affiliations: 1: Department of Arid Land Resource Sciences, University of Arizona; 2: 25th Operational Weather Squadron, United States Air Force; 3: Department of Atmospheric Sciences, University of Arizona; Issue Info: Jun2015, Vol. 35 Issue 8, p2019; Thesaurus Term: Synoptic climatology; Thesaurus Term: Precipitation (Meteorology); Thesaurus Term: Precipitation variability; Subject Term: Monsoons -- Environmental aspects; Subject Term: North America -- Environmental conditions; Author-Supplied Keyword: easterly waves; Author-Supplied Keyword: gulf surge; Author-Supplied Keyword: mesoscale convective systems; Author-Supplied Keyword: North American monsoon; Author-Supplied Keyword: upper-level inverted troughs; Number of Pages: 14p; Document Type: Article L3 - 10.1002/joc.4104 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=103382774&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Wolff, Greg AU - Bell, Michael AU - Escobar, James AU - Ruiz, Stefani T1 - Estimates of pertussis vaccine effectiveness in United States air force pediatric dependents. JO - Vaccine JF - Vaccine Y1 - 2015/06/22/ VL - 33 IS - 28 M3 - Article SP - 3228 EP - 3233 SN - 0264410X AB - Background Pertussis vaccination compliance is critical for reduction in the prevalence of disease; however, the current acellular pertussis vaccine may not provide sufficient protection from infection. This study examined acellular pertussis vaccine effectiveness (VE) for Air Force dependents less than 12 years of age. Methods We conducted a case-control study among Air Force pediatric dependents from 2011 to 2013, comparing cases with positive pertussis test results to controls who received the same lab tests with a negative result. Our study population was categorized by age group and vaccination status based on the Centers for Disease Control and Prevention recommended pertussis vaccination schedule. VE was calculated with respect to vaccination status and pertussis lab results. Results We compared 27 pertussis laboratory positive cases with 974 pertussis laboratory negative controls, 2 months to <12 years old. Comparing completely vaccinated to non-vaccinated patients, the overall VE was 78.3% (95% confidence interval (CI): 48.6, 90.8; p < 0.001). VE was highest among those 15 months to <6 years old: 97.6% (95% CI: 78.5, 99.7; p < 0.001). Children 6 to <12 years old had the lowest VE: 48.5% (95% CI: −74.0, 84.7; p = 0.28). Comparing partially vaccinated patients to nonvaccinated patients yielded 64.2% (95% CI: −7.2, 88.1; p = 0.06) overall VE. Conclusions Acellular pertussis vaccination was effective at preventing laboratory confirmed pertussis among our Air Force pediatric dependent population, with highest protection among completely vaccinated, young children. Older children received the lowest amount of protection. Partial vaccination had near significant protection. Our overall calculated pertussis VE corroborates other pertussis VE studies looking at similar age groups. [ABSTRACT FROM AUTHOR] AB - Copyright of Vaccine is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WHOOPING cough -- Vaccination KW - DISEASE prevalence KW - VACCINATION of children KW - VACCINES -- Effectiveness KW - CASE-control method KW - ACIP Advisory Committee on Immunization Practices KW - CDC Centers for Disease Control and Prevention KW - CI confidence interval KW - ClinChem Clinical Chemistry Database KW - Department of defense KW - DFA direct fluorescent antibody KW - DTaP diphtheria, tetanus toxoids, and acellular pertussis KW - Immunization KW - MTF medical treatment facility KW - OR odds ratio KW - PCR polymerase chain reaction KW - Pertussis KW - Tdap tetanus, diphtheria toxoids, and acellular pertussis KW - U.S. United States KW - USAF United States Air Force KW - Vaccine effectiveness KW - VE vaccine effectiveness KW - VPD vaccine preventable disease KW - CENTERS for Disease Control & Prevention (U.S.) N1 - Accession Number: 103116797; Wolff, Greg 1,2; Email Address: greg.wolff.1@us.af.mil Bell, Michael 1 Escobar, James 1 Ruiz, Stefani 1,2; Affiliation: 1: United States Air Force School of Aerospace Medicine, 2510 5th Street, Bldg 840, Wright-Patterson AFB, OH 45433, United States 2: Solutions Through Innovative Technologies, 3152 Presidential Drive, Fairborn, OH 45324, United States; Source Info: Jun2015, Vol. 33 Issue 28, p3228; Subject Term: WHOOPING cough -- Vaccination; Subject Term: DISEASE prevalence; Subject Term: VACCINATION of children; Subject Term: VACCINES -- Effectiveness; Subject Term: CASE-control method; Author-Supplied Keyword: ACIP Advisory Committee on Immunization Practices; Author-Supplied Keyword: CDC Centers for Disease Control and Prevention; Author-Supplied Keyword: CI confidence interval; Author-Supplied Keyword: ClinChem Clinical Chemistry Database; Author-Supplied Keyword: Department of defense; Author-Supplied Keyword: DFA direct fluorescent antibody; Author-Supplied Keyword: DTaP diphtheria, tetanus toxoids, and acellular pertussis; Author-Supplied Keyword: Immunization; Author-Supplied Keyword: MTF medical treatment facility; Author-Supplied Keyword: OR odds ratio; Author-Supplied Keyword: PCR polymerase chain reaction; Author-Supplied Keyword: Pertussis; Author-Supplied Keyword: Tdap tetanus, diphtheria toxoids, and acellular pertussis; Author-Supplied Keyword: U.S. United States; Author-Supplied Keyword: USAF United States Air Force; Author-Supplied Keyword: Vaccine effectiveness; Author-Supplied Keyword: VE vaccine effectiveness; Author-Supplied Keyword: VPD vaccine preventable disease; Company/Entity: CENTERS for Disease Control & Prevention (U.S.); NAICS/Industry Codes: 923120 Administration of Public Health Programs; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.vaccine.2015.04.084 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103116797&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2015-17968-001 AN - 2015-17968-001 AU - Meade, Mitchell L. AU - Hoffmann, Andrea AU - Makley, Meghan K. AU - Snider, Thomas H. AU - Schlager, John J. AU - Gearhart, Jeffery M. T1 - Quantitative proteomic analysis of the brainstem following lethal sarin exposure. JF - Brain Research JO - Brain Research JA - Brain Res Y1 - 2015/06/22/ VL - 1611 SP - 101 EP - 113 CY - Netherlands PB - Elsevier Science SN - 0006-8993 SN - 1872-6240 AD - Meade, Mitchell L., Henry M. Jackson Foundation for the Advancement of Military Medicine, 2729 R Street, Wright Patterson AFB, Dayton, OH, US, 45433 N1 - Accession Number: 2015-17968-001. PMID: 25842371 Partial author list: First Author & Affiliation: Meade, Mitchell L.; Henry M. Jackson Foundation for the Advancement of Military Medicine, Dayton, OH, US. Release Date: 20150427. Correction Date: 20150615. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Brain Stem; Toxins; Biological Neural Networks; Proteomics. Minor Descriptor: Guinea Pigs. Classification: Neuropsychology & Neurology (2520). Population: Animal (20); Female (40). Methodology: Empirical Study; Quantitative Study. Supplemental Data: Experimental Materials Internet. Page Count: 13. Issue Publication Date: Jun 22, 2015. Publication History: First Posted Date: Apr 1, 2015; Accepted Date: Mar 24, 2015. AB - The brainstem represents a major tissue area affected by sarin organophosphate poisoning due to its function in respiratory and cardiovascular control. While the acute toxic effects of sarin on brainstem-related responses are relatively unknown, other brain areas e.g., cortex or cerebellum, have been studied more extensively. The study objective was to analyze the guinea pig brainstem toxicology response following sarin (2 × LD₅₀) exposure by proteome pathway analysis to gain insight into the complex regulatory mechanisms that lead to impairment of respiratory and cardiovascular control. Guinea pig exposure to sarin resulted in the typical acute behavior/physiology outcomes with death between 15 and 25min. In addition, brain and blood acetylcholinesterase activity was significantly reduced in the presence of sarin to 95%, and 89%, respectively, of control values. Isobaric-tagged (iTRAQ) liquid chromatography tandem mass spectrometry (LC–MS/MS) identified 198 total proteins of which 23% were upregulated, and 18% were downregulated following sarin exposure. Direct gene ontology (GO) analysis revealed a sarin-specific broad-spectrum proteomic profile including glutamate-mediated excitotoxicity, calcium overload, energy depletion responses, and compensatory carbohydrate metabolism, increases in ROS defense, DNA damage and chromatin remodeling, HSP response, targeted protein degradation (ubiquitination) and cell death response. With regards to the sarin-dependent effect on respiration, our study supports the potential interference of sarin with CO₂/H+ sensitive chemoreceptor neurons of the brainstem retrotrapezoid nucleus (RTN) that send excitatory glutamergic projections to the respiratory centers. In conclusion, this study gives insight into the brainstem broad-spectrum proteome following acute sarin exposure and the gained information will assist in the development of novel countermeasures. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - sarin KW - brain effect KW - quantitative proteomics KW - cytoscape KW - reactome functional interaction network analysis KW - 2015 KW - Brain Stem KW - Toxins KW - Biological Neural Networks KW - Proteomics KW - Guinea Pigs KW - 2015 U1 - Sponsor: US Department of Defense, Defense Threat Reduction Agency, US. Grant: SP0-700-00-D-3180. Recipients: No recipient indicated DO - 10.1016/j.brainres.2015.03.041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-17968-001&site=ehost-live&scope=site UR - jeffery.gearhart.ctr@us.af.mil UR - john.schlager@us.af.mil UR - snidert@battelle.org UR - meghan.makley.ctr@us.af.mil UR - drahoffmann1@gmail.com UR - mitchell.meade.1@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Nguyen, Kiet A. AU - Pachter, Ruth AU - Day, Paul N. AU - Haibin Su T1 - Theoretical analysis of structures and electronic spectra in molecular cadmium chalcogenide clusters. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2015/06/21/ VL - 142 IS - 23 M3 - Article SP - 1 EP - 11 PB - American Institute of Physics SN - 00219606 AB - We present calculated structural and optical properties of molecular cadmium chalcogenide nonstoichiometric clusters with a size range of less than 1 nm to more than 2 nm with well-defined chemical compositions and structures in comparison to experimental characterization and previous theoretical work. A unified treatment of these clusters to obtain a fundamental understanding of the size, ligand, and solvation effects on their optical properties has not been heretofore presented. The clusters belong to three topological classes, specifically supertetrahedral (Tn), penta-supertetrahedral (Pn), and capped supertetrahedral (Cn), where n is the number of metal layers in each cluster. The tetrahedrally shaped Tn clusters examined in this work are Cd(ER)42- (T1), Cd4(ER)102- (T2), and Cd10E'4(ER)164- (T3), where R is an organic group, E and E' are chalcogen atoms (sulfur or selenium). The first member of the Pn series considered is M8E'(ER)162-. For the Cn series, we consider the first three members, M17E'4(ER)282-, M32E'14(ER)36L4, and M54E'32(ER)48L44- (L = neutral ligand). Mixed ligand clusters with capping ER groups replaced by halogen or neutral ligands were also considered. Ligands and solvent were found to have a large influence on the color and intensity of the electronic absorption spectra of small clusters. Their effects are generally reduced with increasing cluster sizes. Blueshifts were observed for the first electronic transition with reduced size for both cadmium sulfide and cadmium selenide series. Due to weakly absorbing and forbidden transitions underlying the one-photon spectra, more care is needed in interpreting the quantum confinement from the clusters' lowest-energy absorption bands. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC spectra KW - MOLECULAR structure KW - CADMIUM compounds KW - CHALCOGENIDES KW - LIGANDS KW - COMPARATIVE studies N1 - Accession Number: 103412907; Nguyen, Kiet A. 1,2; Email Address: kiet.nguyen.2.ctr@us.af.mil Pachter, Ruth 1; Email Address: ruth.pachter@us.af.mil Day, Paul N. 1,3 Haibin Su 4; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 2: UES, Inc., Dayton, Ohio 45432, USA 3: General Dynamics Information Technology, Inc., Dayton, Ohio 45431, USA 4: Nanyang Technological University, Singapore 639798, Singapore; Source Info: 2015, Vol. 142 Issue 23, p1; Subject Term: ELECTRONIC spectra; Subject Term: MOLECULAR structure; Subject Term: CADMIUM compounds; Subject Term: CHALCOGENIDES; Subject Term: LIGANDS; Subject Term: COMPARATIVE studies; Number of Pages: 11p; Illustrations: 3 Diagrams, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.4922320 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103412907&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ramirez, J. Israel AU - Li, Yuanyuan V. AU - Basantani, Hitesh AU - Leedy, Kevin AU - Bayraktaroglu, Burhan AU - Jessen, Gregg H. AU - Jackson, Thomas N. T1 - Radiation-Hard ZnO Thin Film Transistors. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2015/06/20/6/20/2015 Part 3 VL - 62 IS - 3c M3 - Article SP - 1399 EP - 1404 SN - 00189499 AB - We report effects for up to 100 Mrad (SiO_2) gamma-ray exposure on polycrystalline ZnO thin film transistors (TFTs) deposited by two different techniques. The radiation related TFT changes, either with or without electrical bias during irradiation, are primarily a negative VON shift and a smaller VT shift (\Delta VON\sim - 2.5~\V and \Delta VT\sim - 1.5~\V for 100 Mrad (SiO_2) exposure). Field-effect mobility remains nearly unchanged. Both, VON and VT shifts are nearly completely removed by annealing at 200^\circ C for 1 minute and some recovery is seen even at room temperature. We find that our ZnO TFTs are insensitive to electrical bias during irradiation; that is, unbiased measurements are useful worst case test results. To the best of our knowledge, these are the most radiation-hard thin film transistors reported to date. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Irradiation KW - Gamma-ray scattering KW - Polycrystals KW - Thin film transistors KW - Field-effect devices KW - Annealing furnaces KW - Annealing KW - Cobalt-60 KW - gamma rays KW - irradiation KW - Logic gates KW - oxide semiconductor KW - polycrystalline ZnO KW - Radiation effects KW - radiation-hard KW - Silicon KW - thin film transistors (TFTs) KW - Threshold voltage KW - Zinc oxide KW - ZnO N1 - Accession Number: 103264803; Ramirez, J. Israel 1; Li, Yuanyuan V. 2; Basantani, Hitesh 2; Leedy, Kevin 3; Bayraktaroglu, Burhan 3; Jessen, Gregg H. 3; Jackson, Thomas N. 1; Affiliations: 1: Center for Thin Film Devices and Materials Research Institute, Department of Electrical Engineering, Penn State University, University Park, United States; 2: Intel Corp., University Park, United States; 3: Sensors Directorate, Air Force Research Laboratory, AFRL/RYDD, Wright Patterson AFB, United States; Issue Info: 6/20/2015 Part 3, Vol. 62 Issue 3c, p1399; Thesaurus Term: Irradiation; Subject Term: Gamma-ray scattering; Subject Term: Polycrystals; Subject Term: Thin film transistors; Subject Term: Field-effect devices; Subject Term: Annealing furnaces; Author-Supplied Keyword: Annealing; Author-Supplied Keyword: Cobalt-60; Author-Supplied Keyword: gamma rays; Author-Supplied Keyword: irradiation; Author-Supplied Keyword: Logic gates; Author-Supplied Keyword: oxide semiconductor; Author-Supplied Keyword: polycrystalline ZnO; Author-Supplied Keyword: Radiation effects; Author-Supplied Keyword: radiation-hard; Author-Supplied Keyword: Silicon; Author-Supplied Keyword: thin film transistors (TFTs); Author-Supplied Keyword: Threshold voltage; Author-Supplied Keyword: Zinc oxide; Author-Supplied Keyword: ZnO; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TNS.2015.2417831 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=103264803&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Yu, Kai AU - Phillips, David M AU - Baur, Jeffery W AU - Qi, H Jerry T1 - Analysis of shape-memory polymer composites with embedded microvascular system for fast thermal response. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2015/06/20/ VL - 49 IS - 15 M3 - Article SP - 1881 EP - 1893 SN - 00219983 AB - The microvascular strategy demonstrates unique advantages in shape-memory polymer applications as it can achieve both rapid thermal activation and deactivation during a typical shape-memory cycle. In addition, localized overheating can be avoided in comparison with other heating methods, such as the magnetic and electric heating. In this paper, a finite-element-based computational analysis was performed to study the rapid thermal response of shape-memory polymer composites with an embedded microvascular system. We show that the polymer shape-fixing speed, the shape fixity after a given cooling time, and the shape-recovery rate are significantly enhanced due to the rapid cooling and heating effect of internal microvasculature. The effect of the composite dimensions and microvascular channel arrangement on the activation and deactivation was studied. Typically, reducing the composite thickness and tube spacing increases the shape-recovery speed of the shape-memory polymer composite by effectively reducing the length of the thermal conduction pathways. Strategies for achieving an optimized tube arrangement were also discussed based on the considerations of the system mass and thermal boundary conditions. The results in this paper provide a guideline for further designs and applications of shape-memory polymer composites with embedded microvasculature. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHAPE memory polymers KW - POLYMERIC composites KW - THERMAL conductivity KW - ELECTRIC heating KW - THICKNESS measurement KW - constitutive modeling KW - Microvascular heating system KW - shape-memory effects KW - shape-memory polymers N1 - Accession Number: 103090151; Yu, Kai 1 Phillips, David M 2 Baur, Jeffery W 3 Qi, H Jerry 1; Email Address: Jeffery.Baur@wpafb.af.mil; Affiliation: 1: Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA, School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, OH, USA, Materials & Manufacturing, Universal Technology Corporation, Dayton, OH, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, OH, USA; Source Info: Jun2015, Vol. 49 Issue 15, p1881; Subject Term: SHAPE memory polymers; Subject Term: POLYMERIC composites; Subject Term: THERMAL conductivity; Subject Term: ELECTRIC heating; Subject Term: THICKNESS measurement; Author-Supplied Keyword: constitutive modeling; Author-Supplied Keyword: Microvascular heating system; Author-Supplied Keyword: shape-memory effects; Author-Supplied Keyword: shape-memory polymers; Number of Pages: 13p; Document Type: Article; Full Text Word Count: 6846 L3 - 10.1177/0021998314540194 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103090151&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gutierrez-Cuevas, Karla G. AU - Wang, Ling AU - Xue, Chenming AU - Singh, Gautam AU - Kumar, Satyendra AU - Urbas, Augustine AU - Li, Quan T1 - Near infrared light-driven liquid crystal phase transition enabled by hydrophobic mesogen grafted plasmonic gold nanorods. JO - Chemical Communications JF - Chemical Communications Y1 - 2015/06/18/ VL - 51 IS - 48 M3 - Article SP - 9845 EP - 9848 SN - 13597345 AB - Light-driven phase transition in liquid crystals is a fascinating endeavour from both scientific and technological points of view. Here we demonstrate the proof-of-principle that the photothermal effect of organo-soluble plasmonic gold nanorods can introduce the phase transition of thermotropic liquid crystals upon near infrared laser irradiation. Interestingly, the reverse process occurs when the laser is switched off. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemical Communications is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - PHASE transformations (Physics) KW - HYDROPHOBIC interactions KW - NANORODS KW - GOLD N1 - Accession Number: 103013790; Gutierrez-Cuevas, Karla G. 1 Wang, Ling 1 Xue, Chenming 1 Singh, Gautam 2 Kumar, Satyendra 2 Urbas, Augustine 3 Li, Quan 1; Affiliation: 1: Liquid Crystal Institute, Kent State University, Kent, Ohio, 44242, USA 2: Department of Physics, Kent State University, Kent, Ohio, 44242, USA 3: Materials and Manufacturing Directorate, Air Force Research laboratory WPAFB, Ohio 45433, USA; Source Info: 6/18/2015, Vol. 51 Issue 48, p9845; Subject Term: LIQUID crystals; Subject Term: PHASE transformations (Physics); Subject Term: HYDROPHOBIC interactions; Subject Term: NANORODS; Subject Term: GOLD; Number of Pages: 4p; Document Type: Article L3 - 10.1039/c5cc02127h UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103013790&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Katta, Viswanath R. AU - Blunck, David L. AU - Jiang, Naibo AU - Lynch, Amy AU - Gord, James R. AU - Roy, Sukesh T1 - On flames established with air jet in cross flow of fuel-rich combustion products. JO - Fuel JF - Fuel Y1 - 2015/06/15/ VL - 150 M3 - Article SP - 360 EP - 369 SN - 00162361 AB - Advances in combustor technologies are driving aircraft gas turbine engines to operate at higher pressures, temperatures and equivalence ratios. A viable approach for protecting the combustor from the high-temperature environment is to inject air through the holes drilled on the surfaces. However, it is possible that the air intended for cooling purposes may react with fuel-rich combustion products and may increase heat flux. Air Force Research Laboratory (AFRL) has developed an experimental rig for studying the flames formed between the injected cold air and the cross flow of combustion products. Laser-based OH measurements revealed an upstream shift for the flames when the air injection velocity was increased and downstream shift when the fuel content in the cross flow was increased. As conventional understanding of the flame stability does not explain such shifts in flame anchoring location, a time-dependent, detailed-chemistry computational-fluid-dynamics model is used for identifying the mechanisms that are responsible. Combustion of propane fuel with air is modeled using a chemical-kinetics mechanism involving 52 species and 544 reactions. Calculations reveled that the flames in the film-cooling experiment are formed through autoignition process. Simulations have reproduced the various flame characteristics observed in the experiments. Numerical results are used for explaining the non-intuitive shifts in flame anchoring location to the changes in blowing ratio and equivalence ratio. The higher diffusive mass transfer rate of hydrogen in comparison to the local heat transport enhances H 2 –O 2 mixing compared to thermal dissipation rate, which, in turn, affects the autoignition process. While increasing the blowing ratio abates the differences resulting from non-equal mass and heat transport rates, higher concentrations of hydrogen in the fuel-rich cross flows accelerate those differences. [ABSTRACT FROM AUTHOR] AB - Copyright of Fuel is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIR jets KW - COMBUSTION KW - COMBUSTION chambers KW - AIRCRAFT gas turbines KW - TEMPERATURE effect KW - Autoignition KW - Diffusion flame KW - Film-cooling KW - Jet-in-cross-flow KW - Preferential diffusion KW - AIR Force Research Laboratory (Edwards Air Force Base, Calif.) N1 - Accession Number: 101928003; Katta, Viswanath R. 1; Email Address: vrkatta@gmail.com Blunck, David L. 2 Jiang, Naibo 3 Lynch, Amy 4 Gord, James R. 4 Roy, Sukesh 3; Affiliation: 1: Innovative Scientific Solutions, Inc., Dayton, OH 45459, USA 2: Oregon State University, Corvallis, OR 97331, USA 3: Spectral Energies, LLC, Dayton, OH 45431, USA 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Jun2015, Vol. 150, p360; Subject Term: AIR jets; Subject Term: COMBUSTION; Subject Term: COMBUSTION chambers; Subject Term: AIRCRAFT gas turbines; Subject Term: TEMPERATURE effect; Author-Supplied Keyword: Autoignition; Author-Supplied Keyword: Diffusion flame; Author-Supplied Keyword: Film-cooling; Author-Supplied Keyword: Jet-in-cross-flow; Author-Supplied Keyword: Preferential diffusion; Company/Entity: AIR Force Research Laboratory (Edwards Air Force Base, Calif.); NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; NAICS/Industry Codes: 562210 Waste treatment and disposal; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.fuel.2015.02.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101928003&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Basiri, A. AU - Vitebskiy, I. AU - Kottos, T. T1 - Light scattering in pseudopassive media with uniformly balanced gain and loss. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2015/06/15/ VL - 91 IS - 6-B M3 - Article SP - 1 EP - 5 SN - 10502947 AB - We introduce a class of metamaterials with uniformly balanced gain and loss associated with complex permittivity and permeability constants. The refractive index of such a balanced pseudopassive metamaterial is real. An unbounded uniform pseudopassive medium has transport characteristics similar to those of its truly passive and lossless counterpart with the same real refractive index. However, bounded pseudopassive samples show some unexpected scattering features which can be further emphasized by including such elements in a photonic structure. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHT -- Scattering KW - METAMATERIALS KW - PERMITTIVITY KW - PERMEABILITY KW - PHOTONICS N1 - Accession Number: 108491393; Basiri, A. 1 Vitebskiy, I. 2 Kottos, T. 1; Affiliation: 1: Department of Physics, Wesleyan University, Middletown, Connecticut 06459, USA 2: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: Jun2015, Vol. 91 Issue 6-B, p1; Subject Term: LIGHT -- Scattering; Subject Term: METAMATERIALS; Subject Term: PERMITTIVITY; Subject Term: PERMEABILITY; Subject Term: PHOTONICS; Number of Pages: 5p; Document Type: Article L3 - 10.1103/PhysRevA.91.063843 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108491393&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dastidar, I.G. AU - Khademi, V. AU - Bieler, T.R. AU - Pilchak, A.L. AU - Crimp, M.A. AU - Boehlert, C.J. T1 - The tensile and tensile-creep deformation behavior of Ti–8Al–1Mo–1V(wt%). JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2015/06/11/ VL - 636 M3 - Article SP - 289 EP - 300 SN - 09215093 AB - The deformation behavior of titanium (Ti) can be complex due to the lower crystal symmetry of the hexagonal α phase compared with metals based on cubic phases. The tensile and tensile-creep deformation behavior of a Ti–8Al–1Mo–1V(wt%) alloy with a weak crystallographic texture was investigated in-situ straining scanning electron microscopy. Tensile experiments were performed at room temperature (RT), 260 °C, 455 °C, and 650 °C, while tensile-creep experiments were performed at 370 °C and 455 °C. Electron backscattered diffraction (EBSD) was performed both before and after the deformation, and slip trace analysis was used to identify the activation of the slip modes as a function of temperature and the associated global-stress-state Schmid factors. While extensive slip was characterized during the tensile tests, no twinning was observed. During the RT tensile tests the majority of the slip observed was on prismatic planes, while the relative activity of basal slip increased with temperature, such that at 455 °C, basal slip and prismatic slip were equally active. Some grain boundary and triple point cracking occurred during the elevated-temperature tensile deformation, while less slip activity and more grain boundary ledge formation were observed during the tensile-creep deformation. During tensile-creep, basal slip was more prevalent than prismatic slip and some transgranular cracks formed. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Creep KW - DEFORMATIONS (Mechanics) KW - TITANIUM alloys KW - CRYSTAL symmetry KW - CRYSTAL texture KW - SCANNING electron microscopy KW - Creep KW - Deformation mode KW - EBSD KW - In-situ SEM KW - Tension KW - Titanium alloy N1 - Accession Number: 102719920; Dastidar, I.G. 1 Khademi, V. 1,2 Bieler, T.R. 1 Pilchak, A.L. 3 Crimp, M.A. 1 Boehlert, C.J. 1; Email Address: boehlert@egr.msu.edu; Affiliation: 1: Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI 48824, USA 2: Department of Mechanical Engineering, Michigan State University, East Lansing, MI 48824, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright Patterson Air Force Base, OH 45433, USA; Source Info: Jun2015, Vol. 636, p289; Subject Term: METALS -- Creep; Subject Term: DEFORMATIONS (Mechanics); Subject Term: TITANIUM alloys; Subject Term: CRYSTAL symmetry; Subject Term: CRYSTAL texture; Subject Term: SCANNING electron microscopy; Author-Supplied Keyword: Creep; Author-Supplied Keyword: Deformation mode; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: In-situ SEM; Author-Supplied Keyword: Tension; Author-Supplied Keyword: Titanium alloy; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.msea.2015.03.059 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102719920&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yuyuan Zhang AU - de La Harpe, Kimberly AU - Beckstead, Ashley A. AU - Improta, Roberto AU - Kohler, Bern T1 - UV-Induced Proton Transfer between DNA Strands. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2015/06/10/ VL - 137 IS - 22 M3 - Article SP - 7059 EP - 7062 SN - 00027863 AB - UV radiation creates excited states in DNA that lead to mutagenic photoproducts. Photoexcitation of single-stranded DNA can transfer an electron between stacked bases, but the fate of excited states in the double helix has been intensely debated. Here, photoinduced interstrand proton transfer (PT) triggered by intrastrand electron transfer (ET) is detected for the first time by time-resolved vibrational spectroscopy and quantum mechanical calculations. Long-lived excited states are shown to be oppositely charged base pair radical ions. In two of the duplexes, the base pair radical anions are present as tautomers formed by interstrand PT. Charge recombination occurs on the picosecond time scale preventing the accumulation of damaging radicals or mutagenic tautomers. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DNA KW - ULTRAVIOLET radiation KW - PHOTOEXCITATION KW - EXCITED state energies KW - ATOMIC excitation N1 - Accession Number: 103423814; Yuyuan Zhang 1 de La Harpe, Kimberly 2 Beckstead, Ashley A. 1 Improta, Roberto 3; Email Address: robimp@unina.it Kohler, Bern 1; Email Address: kohler@chemistry.montana.edu; Affiliation: 1: Department of Chemistry and Biochemistry, Montana State University, Bozeman, Montana 59717, United States 2: Department of Physics, United States Air Force Academy, USAF Academy, Colorado 80840, United States 3: Consiglio Nationale delle Ricerche, Istituto di Biostrutture e Bioimmagini, Via Mezzocannone 16, 80136 Naples, Italy; Source Info: 6/10/2015, Vol. 137 Issue 22, p7059; Subject Term: DNA; Subject Term: ULTRAVIOLET radiation; Subject Term: PHOTOEXCITATION; Subject Term: EXCITED state energies; Subject Term: ATOMIC excitation; Number of Pages: 4p; Document Type: Article L3 - 10.1021/jacs.5b03914 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103423814&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wu, Jingbo AU - Iacono, Scott T. AU - McCandless, Gregory T. AU - Smith, Dennis W. AU - Novak, Bruce M. T1 - Utilization of a Meldrum's acid towards functionalized fluoropolymers possessing dual reactivity for thermal crosslinking and post-polymerization modification. JO - Chemical Communications JF - Chemical Communications Y1 - 2015/06/04/ VL - 51 IS - 44 M3 - Article SP - 9220 EP - 9222 SN - 13597345 AB - New thermally cross-linkable and/or post-functionalizable perfluorocyclobutyl (PFCB) polymers containing Meldrum's acid moieties have been successfully prepared via the thermal cyclopolymerization of a new Meldrum's acid functionalized aromatic trifluorovinyl ether (TFVE) monomer. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemical Communications is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUOROPOLYMERS KW - FUNCTIONAL groups KW - POLYMERIZATION KW - REACTIVITY (Chemistry) KW - THERMAL analysis N1 - Accession Number: 102783221; Wu, Jingbo 1 Iacono, Scott T. 2 McCandless, Gregory T. 1 Smith, Dennis W. 1 Novak, Bruce M. 1; Affiliation: 1: Department of Chemistry and the Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas, Richardson, Texas, 75080, USA 2: Department of Chemistry and Chemistry Research Center, United States Air Force Academy, Colorado Springs, Colorado 80840, USA; Source Info: 6/4/2015, Vol. 51 Issue 44, p9220; Subject Term: FLUOROPOLYMERS; Subject Term: FUNCTIONAL groups; Subject Term: POLYMERIZATION; Subject Term: REACTIVITY (Chemistry); Subject Term: THERMAL analysis; Number of Pages: 3p; Document Type: Article L3 - 10.1039/c5cc02382c UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102783221&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ding, Lei AU - Melodia, Tommaso AU - Batalama, Stella N. AU - Matyjas, John D. T1 - Distributed resource allocation in cognitive and cooperative ad hoc networks through joint routing, relay selection and spectrum allocation. JO - Computer Networks JF - Computer Networks Y1 - 2015/06/04/ VL - 83 M3 - Article SP - 315 EP - 331 SN - 13891286 AB - Cooperative relaying and dynamic-spectrum-access/cognitive techniques are promising solutions to increase the capacity and reliability of wireless links by exploiting the spatial and frequency diversity of the wireless channel. Yet, the combined use of cooperative relaying and dynamic spectrum access in multi-hop networks with decentralized control is far from being well understood. We study the problem of network throughput maximization in cognitive and cooperative ad hoc networks through joint optimization of routing, relay assignment and spectrum allocation. We derive a decentralized algorithm that solves the power and spectrum allocation problem for two common cooperative transmission schemes, decode-and-forward (DF) and amplify-and-forward (AF), based on convex optimization and arithmetic–geometric mean approximation techniques. We then propose and design a practical medium access control protocol in which the probability of accessing the channel for a given node depends on a local utility function determined as the solution of the joint routing, relay selection, and dynamic spectrum allocation problem. Therefore, the algorithm aims at maximizing the network throughput through local control actions and with localized information only. Through discrete-event network simulations, we finally demonstrate that the protocol provides significant throughput gains with respect to baseline solutions. [ABSTRACT FROM AUTHOR] AB - Copyright of Computer Networks is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESOURCE allocation KW - WIRELESS communication systems KW - UTILITY functions KW - AD hoc networks (Computer networks) KW - SPECTRUM allocation KW - RELAYING (Electric power systems) KW - Cognitive ad hoc networks KW - Cooperative communications KW - Cross-layer design KW - Dynamic spectrum allocation N1 - Accession Number: 103176620; Ding, Lei 1; Email Address: leiding@buffalo.edu; Melodia, Tommaso 2; Email Address: melodia@ece.neu.edu; Batalama, Stella N. 1; Email Address: batalama@buffalo.edu; Matyjas, John D. 3; Email Address: john.matyjas@rl.af.mil; Affiliations: 1: Department of Electrical Engineering, The State University of New York at Buffalo, NY 14260, USA; 2: Department of Electrical and Computer Engineering, Northeastern University, Boston, MA 02115, USA; 3: The U.S. Air Force Research Laboratory, RIGF, Rome, NY 13441, USA; Issue Info: Jun2015, Vol. 83, p315; Thesaurus Term: RESOURCE allocation; Thesaurus Term: WIRELESS communication systems; Thesaurus Term: UTILITY functions; Subject Term: AD hoc networks (Computer networks); Subject Term: SPECTRUM allocation; Subject Term: RELAYING (Electric power systems); Author-Supplied Keyword: Cognitive ad hoc networks; Author-Supplied Keyword: Cooperative communications; Author-Supplied Keyword: Cross-layer design; Author-Supplied Keyword: Dynamic spectrum allocation; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.comnet.2015.02.027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=103176620&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Adamson, David T. AU - Anderson, R. Hunter AU - Mahendra, Shaily AU - Newell, Charles J. T1 - Evidence of 1,4-Dioxane Attenuation at Groundwater Sites Contaminated with Chlorinated Solvents and 1,4-Dioxane. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2015/06/02/ VL - 49 IS - 11 M3 - Article SP - 6510 EP - 6518 SN - 0013936X AB - There is a critical need to develop appropriate management strategies for 1,4-dioxane (dioxane) due to its widespread occurrence and perceived recalcitrance at groundwater sites where chlorinated solvents are present. A comprehensive evaluation of California state (GeoTracker) and Air Force monitoring records was used to provide significant evidence of dioxane attenuation at field sites. Temporal changes in the site-wide maximum concentrations were used to estimate source attenuation rates at the GeoTracker sites (median length of monitoring period = 6.8 years). While attenuation could not be established at all sites, statistically significant positive attenuation rates were confirmed at 22 sites. At sites where dioxane and chlorinated solvents were present, the median value of all statistically significant dioxane source attenuation rates (equivalent half-life = 31 months; n = 34) was lower than 1,1,1-trichloroethane (TCA) but similar to 1,1-dichloroethene (1,1-DCE) and trichloroethene (TCE). Dioxane attenuation rates were positively correlated with rates for 1,1-DCE and TCE but not TCA At this set of sites, there was little evidence that chlorinated solvent remedial efforts (e.g., chemical oxidation, enhanced bioremediation) impacted dioxane attenuation. Attenuation rates based on well-specific records from the Air Force data set confirmed significant dioxane attenuation (131 out of 441 wells) at a similar frequency and extent (median equivalent half-life = 48 months) as observed at the California sites. Linear discriminant analysis established a positive correlation between dioxane attenuation and increasing concentrations of dissolved oxygen, while the same analysis found a negative correlation with metals and CVOC concentrations. The magnitude and prevalence of dioxane attenuation documented here suggest that natural attenuation may be used to manage some but not necessarily all dioxane-impacted sites. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIOXANE KW - ATTENUATION (Physics) KW - GROUNDWATER -- Pollution KW - SOLVENTS KW - CHLORINE KW - WATER -- Dissolved oxygen KW - DISCRIMINANT analysis N1 - Accession Number: 103409448; Adamson, David T. 1; Email Address: dtadamson@gsi-net.com Anderson, R. Hunter 2 Mahendra, Shaily 3 Newell, Charles J. 1; Affiliation: 1: GSI Environmental Inc., Houston, Texas 77098, United States 2: Air Force Civil Engineer Center, Lackland Air Force Base, San Antonio, Texas 78236 United States 3: Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, United States; Source Info: 6/2/2015, Vol. 49 Issue 11, p6510; Subject Term: DIOXANE; Subject Term: ATTENUATION (Physics); Subject Term: GROUNDWATER -- Pollution; Subject Term: SOLVENTS; Subject Term: CHLORINE; Subject Term: WATER -- Dissolved oxygen; Subject Term: DISCRIMINANT analysis; NAICS/Industry Codes: 325181 Alkali and chlorine manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 9p; Document Type: Article L3 - 10.1021/acs.est.5b00964 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103409448&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jinho Lee AU - Kuo-Cheng Lin AU - Eklund, Dean T1 - Challenges in Fuel Injection for High-Speed Propulsion Systems. JO - AIAA Journal JF - AIAA Journal Y1 - 2015/06// VL - 53 IS - 6 M3 - Article SP - 1405 EP - 1423 SN - 00011452 AB - The article presents a study which investigated the effects of fuel, fuel injection, mixing and combustion on propulsion performance of high-speed airbreathing propulsion systems. Topics covered include the use of fuel penetration and mixing characteristics in the design process for a typical high-speed combustor flowpath, liquid-fuel injectors and insights obtained from latest studies conducted using computational fluid dynamics (CFD). KW - INTERNAL combustion engines KW - PROPULSION systems KW - ENGINEERING systems KW - FUEL KW - COMPUTATIONAL fluid dynamics N1 - Accession Number: 103017308; Jinho Lee 1 Kuo-Cheng Lin 2 Eklund, Dean 3; Affiliation: 1: NASA John H. Glenn Research Center, Cleveland, Ohio 44135 2: Taitech, Inc., Beavercreek, Ohio 45430 3: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jun2015, Vol. 53 Issue 6, p1405; Subject Term: INTERNAL combustion engines; Subject Term: PROPULSION systems; Subject Term: ENGINEERING systems; Subject Term: FUEL; Subject Term: COMPUTATIONAL fluid dynamics; NAICS/Industry Codes: 454310 Fuel Dealers; NAICS/Industry Codes: 454319 Other fuel dealers; NAICS/Industry Codes: 333619 Other engine and power transmission equipment manufacturing; NAICS/Industry Codes: 336310 Motor Vehicle Gasoline Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 333618 Other Engine Equipment Manufacturing; NAICS/Industry Codes: 423830 Industrial Machinery and Equipment Merchant Wholesalers; Number of Pages: 19p; Document Type: Article L3 - 10.2514/1.J053280 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103017308&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rizzetta, Donald P. AU - Visbal, Miguel R. T1 - Plasma-Based Flow Control for Delay of Excrescence-Generated Transition. JO - AIAA Journal JF - AIAA Journal Y1 - 2015/06// VL - 53 IS - 6 M3 - Article SP - 1455 EP - 1467 SN - 00011452 AB - Numerical simulations are carried out to explore flow control that delays transition generated by excrescence on a platelike geometry in subsonic flow. Both forward-facing and rearward-facing steps of small roughness heights are considered in the simulations. These are representative of joints and other surface imperfections on wing sections that disrupt laminar flow, thereby increasing skin friction and drag. Dielectric barrier discharge plasma-based flow control is employed to delay transition and increase the extent of the laminar flow region. Solutions are obtained to the Navier-Stokes equations, which were augmented by source terms used to characterize the body force imparted by a plasma actuator on the fluid. A simple phenomenological model provided these forces resulting from the electric field generated by the plasma. The numerical method is based upon a high-order numerical scheme and an implicit time-marching approach on overset mesh systems used to describe the steps. Very small-amplitude numerical forcing is applied to generate perturbations, which are amplified by the geometric disturbances and result in transition, similar to the physical situation. Both continuous and pulsed operations of actuators are investigated. Features of the flowfields are described, and comparisons are provided between the baseline and control cases. It is found that use of plasma actuators can maintain laminar flow for the entire length of the computational domain, resulting in a reduction of the integrated drag by up to 70%. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUBSONIC flow KW - RESEARCH KW - FLOW (Fluid dynamics) KW - LAMINAR flow KW - DRAG (Aerodynamics) KW - COMPUTER simulation KW - NAVIER-Stokes equations N1 - Accession Number: 103017312; Rizzetta, Donald P. 1 Visbal, Miguel R. 2; Affiliation: 1: Senior Research Aerospace Engineer, Aerodynamic Technology Branch, AFRL/RQVA, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512 2: Technical Area Leader, Aerodynamic Technology Branch, AFRL/RQVA, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512; Source Info: Jun2015, Vol. 53 Issue 6, p1455; Subject Term: SUBSONIC flow; Subject Term: RESEARCH; Subject Term: FLOW (Fluid dynamics); Subject Term: LAMINAR flow; Subject Term: DRAG (Aerodynamics); Subject Term: COMPUTER simulation; Subject Term: NAVIER-Stokes equations; Number of Pages: 13p; Document Type: Article L3 - 10.2514/1.J053289 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103017312&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kan, Zhen AU - Klotz, Justin R. AU - Jr.Pasiliao, Eduardo L. AU - Dixon, Warren E. T1 - Containment control for a social network with state-dependent connectivity. JO - Automatica JF - Automatica Y1 - 2015/06// VL - 56 M3 - Article SP - 86 EP - 92 SN - 00051098 AB - Social interactions influence our thoughts, opinions and actions. In this paper, social interactions are studied within a group of individuals composed of influential social leaders and followers. Each person is assumed to maintain a social state, which can be an emotional state or an opinion. Followers update their social states based on the states of local neighbors, while social leaders maintain a constant desired state. Social interactions are modeled as a general directed graph where each directed edge represents an influence from one person to another. Motivated by the non-local property of fractional-order systems, the social response of individuals in the network are modeled by fractional-order dynamics whose states depend on influences from local neighbors and past experiences. A decentralized influence method is then developed to maintain existing social influence between individuals (i.e., without isolating peers in the group) and to influence the social group to a common desired state (i.e., within a convex hull spanned by social leaders). Mittag-Leffler stability methods are used to prove the asymptotic convergence of the networked fractional-order system. [ABSTRACT FROM AUTHOR] AB - Copyright of Automatica is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOCIAL interaction KW - DIRECTED graphs KW - SOCIAL networks KW - APPROXIMATION theory KW - LEADERS KW - PUBLIC opinion KW - Containment control KW - Fractional-order dynamics KW - Network connectivity KW - Social network N1 - Accession Number: 102462183; Kan, Zhen 1; Email Address: kanzhen0322@ufl.edu Klotz, Justin R. 1; Email Address: jklotz@ufl.edu Jr.Pasiliao, Eduardo L. 2; Email Address: pasiliao@eglin.af.mil Dixon, Warren E. 1; Email Address: wdixon@ufl.edu; Affiliation: 1: Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, USA 2: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, USA; Source Info: Jun2015, Vol. 56, p86; Subject Term: SOCIAL interaction; Subject Term: DIRECTED graphs; Subject Term: SOCIAL networks; Subject Term: APPROXIMATION theory; Subject Term: LEADERS; Subject Term: PUBLIC opinion; Author-Supplied Keyword: Containment control; Author-Supplied Keyword: Fractional-order dynamics; Author-Supplied Keyword: Network connectivity; Author-Supplied Keyword: Social network; NAICS/Industry Codes: 624190 Other Individual and Family Services; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.automatica.2015.03.026 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102462183&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schoenbach, Karl H. AU - Pakhomov, Andrei G. AU - Semenov, Iurii AU - Xiao, Shu AU - Pakhomova, Olga N. AU - Ibey, Bennett L. T1 - Ion transport into cells exposed to monopolar and bipolar nanosecond pulses. JO - Bioelectrochemistry JF - Bioelectrochemistry Y1 - 2015/06// VL - 103 M3 - Article SP - 44 EP - 51 SN - 15675394 AB - Experiments with CHO cells exposed to 60 and 300 ns pulsed electric fields with amplitudes in the range from several kV/cm to tens of kV/cm showed a decrease of the uptake of calcium ions by more than an order of magnitude when, immediately after a first pulse, a second one of opposite polarity was applied. This effect is assumed to be due to the reversal of the electrophoretic transport of ions through the electroporated membrane during the second phase of the bipolar pulse. This assumption, however, is only valid if electrophoresis is the dominant transport mechanism, rather than diffusion. Comparison of calculated calcium ion currents with experimental results showed that for nanosecond pulses, electrophoresis is at least as important as diffusion. By delaying the second pulse with respect to the first one, the effect of reverse electrophoresis is reduced. Consequently, separating nanosecond pulses of opposite polarity by up to approximately hundred microseconds allows us to vary the uptake of ions from very small values to those obtained with two pulses of the same polarity. The measured calcium ion uptake obtained with bipolar pulses also allowed us to determine the membrane pore recovery time. The calculated recovery time constants are on the order of 10 μs. [ABSTRACT FROM AUTHOR] AB - Copyright of Bioelectrochemistry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ION transport (Biology) KW - CALCIUM ions KW - ELECTROPHORESIS KW - MATHEMATICAL constants KW - ELECTROPORATION KW - Diffusion KW - Electrophoresis KW - Electroporation KW - Nanosecond pulses KW - Pore recovery N1 - Accession Number: 101343572; Schoenbach, Karl H. 1; Email Address: kschoenb@odu.edu Pakhomov, Andrei G. 1 Semenov, Iurii 1 Xiao, Shu 1,2 Pakhomova, Olga N. 1 Ibey, Bennett L. 3; Affiliation: 1: Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA 23508, USA 2: Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, VA 23508, USA 3: Bioeffects Division, 711th Human Performance Wing, Air Force Research Laboratory, Fort Sam Houston, San Antonio, TX 78234, USA; Source Info: Jun2015, Vol. 103, p44; Subject Term: ION transport (Biology); Subject Term: CALCIUM ions; Subject Term: ELECTROPHORESIS; Subject Term: MATHEMATICAL constants; Subject Term: ELECTROPORATION; Author-Supplied Keyword: Diffusion; Author-Supplied Keyword: Electrophoresis; Author-Supplied Keyword: Electroporation; Author-Supplied Keyword: Nanosecond pulses; Author-Supplied Keyword: Pore recovery; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.bioelechem.2014.08.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101343572&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Quinton, Betty T. AU - Leedy, Kevin D. AU - Lawson, Jacob W. AU - Tsao, Bang AU - Scofield, James D. AU - Merrett, Joseph N. AU - Zhang, Qiuhong AU - Yost, Kevin AU - Mukhopadhyay, Sharmila M. T1 - Influence of oxide buffer layers on the growth of carbon nanotube arrays on carbon substrates. JO - Carbon JF - Carbon Y1 - 2015/06// VL - 87 M3 - Article SP - 175 EP - 185 SN - 00086223 AB - Controllable growth of carbon nanotube (CNT) arrays on carbon substrates requires an oxide buffer layer material such as Al 2 O 3 and SiO 2 . This research analyzes the influence of these buffer layers on a model carbon substrate composed of pyrolyzed carbon film on flat silicon. Electron microscopy was used to analyze nanocatalyst morphology, particle density, CNT nucleation rate, and CNT morphology for selected growth conditions. It was observed that nanotubes grown on Al 2 O 3 buffer layers had the fastest CNT nucleation rates and more uniform tube diameters, with residual nanocatalyst particles having elongated shapes. In contrast, CNTs formed on SiO 2 buffer layers nucleated slower and had more variation in tube diameters, while the nanocatalyst particles remained spherical. Comparisons among SiO 2 buffer layers deposited using three different techniques—atomic layer deposition, microwave plasma enhanced chemical vapor deposition and thermal oxidation—indicated that surface roughness plays an important role. Silica layers with the highest roughness had the highest catalytic particle density and tallest carpet height for identical growth conditions. These results provide new insight into the importance of buffer layer chemistry and morphology on growth and controllability of CNT arrays. [ABSTRACT FROM AUTHOR] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - OXIDES KW - BUFFER layers KW - SUBSTRATES (Materials science) KW - ALUMINUM oxide KW - SILICA N1 - Accession Number: 101932627; Quinton, Betty T. 1,2; Email Address: betty.quinton@us.af.mil Leedy, Kevin D. 1 Lawson, Jacob W. 3 Tsao, Bang 3 Scofield, James D. 1 Merrett, Joseph N. 1 Zhang, Qiuhong 3 Yost, Kevin 1 Mukhopadhyay, Sharmila M. 2; Affiliation: 1: Air Force Research Laboratory (AFRL), WPAFB, OH 45433, USA 2: Wright State University, Dayton, OH 45420, USA 3: University of Dayton Research Institute (UDRI), Dayton, OH 45469, USA; Source Info: Jun2015, Vol. 87, p175; Subject Term: CARBON nanotubes; Subject Term: OXIDES; Subject Term: BUFFER layers; Subject Term: SUBSTRATES (Materials science); Subject Term: ALUMINUM oxide; Subject Term: SILICA; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 212322 Industrial Sand Mining; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.carbon.2015.02.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101932627&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Clark, Patti J. AU - Newcomer, Jason M. AU - Jones, Angela M. T1 - Overcoming Gender Barriers in Aircraft Maintenance: Women's Perceptions in the United States. JO - Collegiate Aviation Review JF - Collegiate Aviation Review Y1 - 2015///Fall2015 M3 - Article SP - 66 EP - 84 PB - University Aviation Association SN - 15235955 AB - The Federal Aviation Administration's 2014 annual airman certificate demographics report revealed that women comprise roughly 23% of the non-pilot certificated airman in the United States; however, only 2.3% of the certified aircraft mechanic workforce are women. The problem explored in this mixed-methods concurrent triangulation study was the literature gap regarding factors that impact the demographic disparity between men and women in the aircraft maintenance technician field. The purpose of the study was to understand why most women choose not to become aircraft mechanics. A total of 431 female participants completed a 13-question survey containing 5-point Likert and open-ended questions to collect quantitative and qualitative data that addressed the research question. Results indicated that neither motherhood nor marriage were factors that impacted a woman's interest in a career as an aircraft maintenance technician. Furthermore, there was a relationship between a woman's perception of physical limitations as a mechanic, career appropriateness, work environment safety, social acceptance, and advancement opportunities. Finally, the qualitative analysis yielded a substantial amount of informative themes and nodes that illuminated a general lack of women's knowledge regarding the field and a perception of sexual discrimination if one were to start such a career. [ABSTRACT FROM AUTHOR] AB - Copyright of Collegiate Aviation Review is the property of University Aviation Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRLINE maintenance & repair industry KW - WOMEN -- Employment KW - WOMEN -- Psychology KW - FLIGHT attendants KW - SEX discrimination in employment KW - UNITED States KW - UNITED States. Federal Aviation Administration N1 - Accession Number: 111060926; Clark, Patti J. 1 Newcomer, Jason M. 2 Jones, Angela M. 3; Affiliation: 1: Embry-Riddle Aeronautical University--Worldwide 2: United States Air Force, Embry-Riddle Aeronautical University--Worldwide 3: United States Air Force, University of Maryland University College; Source Info: Fall2015, p66; Subject Term: AIRLINE maintenance & repair industry; Subject Term: WOMEN -- Employment; Subject Term: WOMEN -- Psychology; Subject Term: FLIGHT attendants; Subject Term: SEX discrimination in employment; Subject Term: UNITED States; Company/Entity: UNITED States. Federal Aviation Administration; NAICS/Industry Codes: 926120 Regulation and Administration of Transportation Programs; NAICS/Industry Codes: 488190 Other Support Activities for Air Transportation; Number of Pages: 19p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111060926&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Belmont, Erica AU - Ombrello, Timothy AU - Brown, Michael AU - Carter, Campbell AU - Ellzey, Janet T1 - Experimental and numerical investigation of freely propagating flames stabilized on a Hencken Burner. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2015/06// VL - 162 IS - 6 M3 - Article SP - 2679 EP - 2685 SN - 00102180 AB - Detailed flame measurements are necessary for the development of accurate chemical kinetics models. This study characterizes quasi one-dimensional, laminar, nearly adiabatic, and freely propagating flames stabilized over a Hencken flat flame burner. Major reactant and product species in lean premixed methane/oxygen/argon and ethylene/oxygen/argon flames were measured through extractive sampling and absorption spectroscopy to obtain spatially-resolved species profiles of oxygen, methane, ethylene, carbon monoxide and carbon dioxide. Experimental results were compared to numerical simulations of one-dimensional, freely propagating, adiabatic flames. Experimental and numerical results for flame speeds and species concentrations were largely in agreement within calculated uncertainty, indicating that data produced using a Hencken burner at sub-atmospheric pressure can be readily compared to numerical simulations without the need for flame or burner temperatures, which are prone to uncertainty. The influence of the extractive probe on flame structure was also investigated, and results suggest that the structure is less influenced by probe intrusion when the flame is highly stretched. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METHANE KW - CHEMICAL kinetics KW - LAMINAR flow KW - GAS flow KW - BURNERS (Technology) KW - Hencken burner KW - Laminar flames KW - OH PLIF KW - Species profiles KW - Sub-atmospheric pressure N1 - Accession Number: 102495737; Belmont, Erica 1; Email Address: ebelmont@uwyo.edu Ombrello, Timothy 2 Brown, Michael 2 Carter, Campbell 2 Ellzey, Janet 3; Affiliation: 1: The University of Wyoming, Department of Mechanical Engineering, Laramie, WY, USA 2: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, OH, USA 3: The University of Texas at Austin, Department of Mechanical Engineering, Austin, TX, USA; Source Info: Jun2015, Vol. 162 Issue 6, p2679; Subject Term: METHANE; Subject Term: CHEMICAL kinetics; Subject Term: LAMINAR flow; Subject Term: GAS flow; Subject Term: BURNERS (Technology); Author-Supplied Keyword: Hencken burner; Author-Supplied Keyword: Laminar flames; Author-Supplied Keyword: OH PLIF; Author-Supplied Keyword: Species profiles; Author-Supplied Keyword: Sub-atmospheric pressure; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.combustflame.2015.03.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102495737&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martindale, Michael T1 - Evaluating state willingness to pursue space weapons. JO - Defense & Security Analysis JF - Defense & Security Analysis Y1 - 2015/06// VL - 31 IS - 2 M3 - Article SP - 110 EP - 122 SN - 14751798 AB - Many studies exist which evaluate the domain of space from a political perspective in order to advocate for a certain position regarding what states ought to do or not do in space. Few studies exist which address how states actually behave with regard to outer space. In an attempt to fill this gap in the literature, the present study evaluates the determinants of state space behavior. The results identify a blend of the realist pursuit of power and liberal normative restrains acting on state space behavior. [ABSTRACT FROM AUTHOR] AB - Copyright of Defense & Security Analysis is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE weapons KW - ARMS race KW - ARMS control KW - ANTI-satellite weapons testing KW - arms control KW - arms race KW - norms KW - poliheuristic KW - space weapons KW - weaponization KW - CHINA. Zhongguo ren min jie fang jun N1 - Accession Number: 109077022; Martindale, Michael 1; Affiliation: 1: Department of Military and Strategic Studies, United States Air Force Academy, 2354 Fairchild Drive, Suite 2A2, USAF Academy,CO80840-6264, USA; Source Info: Jun2015, Vol. 31 Issue 2, p110; Subject Term: SPACE weapons; Subject Term: ARMS race; Subject Term: ARMS control; Subject Term: ANTI-satellite weapons testing; Author-Supplied Keyword: arms control; Author-Supplied Keyword: arms race; Author-Supplied Keyword: norms; Author-Supplied Keyword: poliheuristic; Author-Supplied Keyword: space weapons; Author-Supplied Keyword: weaponization; Company/Entity: CHINA. Zhongguo ren min jie fang jun; Number of Pages: 13p; Document Type: Article L3 - 10.1080/14751798.2015.1014159 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109077022&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Slayton, Caleb T1 - Underselling Islamist extremism in Sub-Saharan Africa. JO - Defense & Security Analysis JF - Defense & Security Analysis Y1 - 2015/06// VL - 31 IS - 2 M3 - Article SP - 123 EP - 136 SN - 14751798 AB - Islamist extremism as an ideology has seemingly spread in influence in the past few years. The violent Islamist threat may have a singular religious dogma, but that does not mean that it will interact in the same fashion within the various cultures it infests. The Sub-Saharan region is one general context where Islamist extremism is both vividly active and misunderstood. Africa's reaction to: Arabization; the adjustment to post-colonial rule; the perception of secular government institutions; the extent of cultural and religious pluralism; and the local character of Muslim leadership and institutions are all very different from that of the Middle East. Scores of terrorism analysts and even Arab populations only too familiar with the Middle East context superimpose Middle East threats over the Sub-Saharan African cultural landscape. Instead of generalizing the Islamist threats, it might be better to ask why it is that violent Islamist groups have traditionally been challenged to expand their influence in Muslim Sub-Saharan Africa. The underestimated Islamist is using ignorance to its advantage, recruiting through channels unnoticed by its Arab counterparts while creatively catering its message by region. [ABSTRACT FROM AUTHOR] AB - Copyright of Defense & Security Analysis is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADICALISM KW - NATIONAL security KW - TERRORISM KW - INSURGENCY KW - ISLAMISTS KW - AFRICA, Sub-Saharan -- Politics & government KW - AFRICA, Sub-Saharan KW - SAHEL KW - African Islam KW - African security KW - Boko Haram KW - insurgency KW - Islamist extremism KW - Sahel threats KW - terrorism N1 - Accession Number: 109077025; Slayton, Caleb 1; Affiliation: 1: United States Air Force Special Operations School, 357 Tully Avenue,Hurlburt Field, FL32544, USA; Source Info: Jun2015, Vol. 31 Issue 2, p123; Subject Term: RADICALISM; Subject Term: NATIONAL security; Subject Term: TERRORISM; Subject Term: INSURGENCY; Subject Term: ISLAMISTS; Subject Term: AFRICA, Sub-Saharan -- Politics & government; Subject Term: AFRICA, Sub-Saharan; Subject Term: SAHEL; Author-Supplied Keyword: African Islam; Author-Supplied Keyword: African security; Author-Supplied Keyword: Boko Haram; Author-Supplied Keyword: insurgency; Author-Supplied Keyword: Islamist extremism; Author-Supplied Keyword: Sahel threats; Author-Supplied Keyword: terrorism; Number of Pages: 14p; Document Type: Article L3 - 10.1080/14751798.2015.1056933 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109077025&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fajardo, Kevin A. AU - Zorich, Shauna C. AU - Voss, Jameson D. AU - Thervil, Jeffrey W. T1 - Pneumonia Outbreak Caused by Chlamydophila pneumoniae among US Air Force Academy Cadets, Colorado, USA. JO - Emerging Infectious Diseases JF - Emerging Infectious Diseases Y1 - 2015/06// VL - 21 IS - 6 M3 - Article SP - 1049 EP - 1051 PB - Centers for Disease Control & Prevention (CDC) SN - 10806040 AB - During October 2013-May 2014, there were 102 cases of pneumonia diagnosed in US Air Force Academy cadets. A total of 73% of tested nasal washes contained Chlamydophila pneumoniae. This agent can be considered to be present on campus settings during outbreaks with numerous, seemingly disconnected cases of relatively mild pneumonia. [ABSTRACT FROM AUTHOR] AB - Copyright of Emerging Infectious Diseases is the property of Centers for Disease Control & Prevention (CDC) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Disease prevalence KW - Infection KW - Pneumonia KW - Chlamydophila pneumoniae KW - Lung diseases N1 - Accession Number: 102767246; Fajardo, Kevin A. 1; Email Address: kevin.fajardo@us.af.mil; Zorich, Shauna C. 2; Voss, Jameson D. 2; Thervil, Jeffrey W. 2,3; Affiliations: 1: US Air Force Academy, Colorado Springs, Colorado, USA; 2: US Air Force School of Aerospace Medicine, Wright-Patterson Air Force Base, Ohio, USA; 3: Oak Ridge Institute of Science and Education, Oak Ridge, Tennessee, USA; Issue Info: Jun2015, Vol. 21 Issue 6, p1049; Thesaurus Term: RESEARCH; Thesaurus Term: Disease prevalence; Thesaurus Term: Infection; Subject Term: Pneumonia; Subject Term: Chlamydophila pneumoniae; Subject Term: Lung diseases; Number of Pages: 3p; Illustrations: 3 Charts, 1 Graph; Document Type: Article; Full Text Word Count: 2076 L3 - 10.3201/eid2106.141394 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=102767246&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Luo, H. AU - Du, Y. AU - Hu, Z. AU - Cooper, W. AU - Lu, H. T1 - High-Strain Rate Compressive Behavior of Glass Beads Under Confinement. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2015/06// VL - 55 IS - 5 M3 - Article SP - 935 EP - 950 SN - 00144851 AB - Glass beads are often used to examine simulation models for granular materials. The dynamic behavior of glass beads, however, has not been characterized accurately. In this paper, the dynamic behavior is characterized at high strain rates. To describe the beads used in these experiments, the size distribution was measured, and the bead-level mechanical properties were determined by nanoindentation. The dynamic compressive behavior of glass beads under confinement was characterized at strain rates near 400 s using a long split Hopkinson pressure bar. The glass beads were confined inside a hollow cylinder of hardened steel and capped by cemented tungsten carbide cylindrical rods. The assembly was subjected to repeated shaking and tapping to consolidate the glass beads to attain a given bulk mass density. Experiments were conducted on dry unsorted beads at three initial mass densities (1.46, 1.54 and 1.61 g/cm), sorted beads at three sizes (0.30, 0.212, and 0.106 mm), and partially saturated beads with average bead size of 0.212 mm at five water contents (0, 7, 14, 18 and 22 % by weight). Effect of initial mass density, bead size and water content on the dynamic volumetric and deviatoric response was investigated. The impacted beads were sorted for analysis of the particle size distribution. The compressibility was characterized in terms of the void ratio as a function of the axial pressure. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GLASS beads KW - STRAIN rate (Materials science) KW - COMPRESSION loads KW - COMPRESSED air KW - NANOINDENTATION KW - HOPKINSON bars (Testing) KW - TUNGSTEN KW - Compression KW - Confinement KW - Fracture toughness KW - Glass beads KW - Hardness KW - Long split Hopkinson pressure bar (SHPB) KW - Nanoindentation KW - Particle size KW - Water content KW - Young's modulus N1 - Accession Number: 102499128; Luo, H. 1 Du, Y. 1 Hu, Z. 1 Cooper, W. 2 Lu, H. 1; Email Address: hongbing.lu@utdallas.edu; Affiliation: 1: Department of Mechanical Engineering, The University of Texas at Dallas, Richardson 75080 USA 2: Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque 87116 USA; Source Info: Jun2015, Vol. 55 Issue 5, p935; Subject Term: GLASS beads; Subject Term: STRAIN rate (Materials science); Subject Term: COMPRESSION loads; Subject Term: COMPRESSED air; Subject Term: NANOINDENTATION; Subject Term: HOPKINSON bars (Testing); Subject Term: TUNGSTEN; Author-Supplied Keyword: Compression; Author-Supplied Keyword: Confinement; Author-Supplied Keyword: Fracture toughness; Author-Supplied Keyword: Glass beads; Author-Supplied Keyword: Hardness; Author-Supplied Keyword: Long split Hopkinson pressure bar (SHPB); Author-Supplied Keyword: Nanoindentation; Author-Supplied Keyword: Particle size; Author-Supplied Keyword: Water content; Author-Supplied Keyword: Young's modulus; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 16p; Document Type: Article L3 - 10.1007/s11340-015-9995-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102499128&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gockel, B. AU - Caton, M. AU - Jha, S. AU - Szczepanski, C. AU - Rosenberger, A. AU - Burba, M. T1 - Developing the Capability to Monitor Small Fatigue Crack Growth Under Elevated Temperature, Ultra-High Vacuum Conditions. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2015/06// VL - 55 IS - 5 M3 - Article SP - 951 EP - 961 SN - 00144851 AB - It has been reported that the minimum observed fatigue lifetimes in numerous structural alloys are dominated by the small-crack growth behavior. While environmental effects on fatigue crack growth behavior of Ni-base superalloys are well documented within the literature, the published research is largely limited to long crack behavior due to the difficulty of measuring small cracks in a vacuum chamber. A testing capability incorporating optical measurement of small fatigue cracks under ultra-high vacuum (~10 Torr) and at elevated temperatures has been developed. Optical measurement capabilities have been evaluated under laboratory air conditions to determine crack measurement accuracy. A vacuum fatigue test was then completed at 650 °C on a Ni-base superalloy specimen to quantify the effect of vacuum on the propagation life within the small crack regime. The effectiveness of this test capability and considerations for this technique are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE crack growth KW - HIGH temperature physics KW - VACUUM KW - HEAT resistant alloys KW - OPTICAL measurements KW - AEROSPACE industries KW - Environmental effects KW - Fatigue crack growth KW - Ni-base superalloy KW - Small fatigue cracks KW - Ultra-high vacuum N1 - Accession Number: 102499126; Gockel, B.; Email Address: brian.gockel.1@us.af.mil Caton, M. 1 Jha, S. 2 Szczepanski, C. 1 Rosenberger, A. 1 Burba, M.; Affiliation: 1: U. S. Air Force Research Laboratory, Wright-Patterson Air Force Base 45433-7817 USA 2: Universal Technology Corporation, Dayton 45432 USA; Source Info: Jun2015, Vol. 55 Issue 5, p951; Subject Term: FATIGUE crack growth; Subject Term: HIGH temperature physics; Subject Term: VACUUM; Subject Term: HEAT resistant alloys; Subject Term: OPTICAL measurements; Subject Term: AEROSPACE industries; Author-Supplied Keyword: Environmental effects; Author-Supplied Keyword: Fatigue crack growth; Author-Supplied Keyword: Ni-base superalloy; Author-Supplied Keyword: Small fatigue cracks; Author-Supplied Keyword: Ultra-high vacuum; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1007/s11340-015-9998-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102499126&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vongsy, Karmon AU - Eismann, Michael T. AU - Mendenhall, Michael J. T1 - Extension of the Linear Chromodynamics Model for Spectral Change Detection in the Presence of Residual Spatial Misregistration. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2015/06// VL - 53 IS - 6 M3 - Article SP - 3005 EP - 3021 SN - 01962892 AB - A generalized likelihood ratio test (GLRT) statistic for spectral change detection based on the linear chromodynamics model is extended to accommodate unknown residual misregistration between imagery described by a prior probability density function for the spatial misregistration. Using a normal prior distribution leads to a fourth-order polynomial that can be numerically minimized over the unknown misregistration parameters. A more computationally efficient closed-form solution is developed based on a quadratic approximation and provides comparable results to the numerical minimization for the investigated test cases while running 30 times faster. The results applying the method to hyperspectral imagery indicate up to an order of magnitude reduction in false alarms at the same detection rate relative to baseline change detection methods for synthetically misregistered test data particularly in image regions containing edges and fine spatial features. Sensitivity to model parameters is assessed, and the method is compared with a previously published misregistration compensation approach yielding comparable results. Although the GLRT approach appears to exhibit comparable change detection performance, it offers the possibility of tailoring the algorithm to a priori knowledge of expected misregistration errors or to compensate structured misregistration as would occur due to parallax errors due to perspective variations (e.g., image parallax). [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMAGE registration KW - LIKELIHOOD ratio tests KW - PROBABILITY density function KW - APPROXIMATION theory KW - SPECTRAL sensitivity KW - Change detection KW - generalized likelihood ratio test (GLRT) KW - hyperspectral KW - misregistration N1 - Accession Number: 102838722; Vongsy, Karmon 1 Eismann, Michael T. 1; Email Address: michael.eismann@us.af.mil Mendenhall, Michael J. 2; Email Address: mendenmi@gmail.com; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, W--7700 USA 2: Department of Electrical Engineering, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433-7765 USA; Source Info: Jun2015, Vol. 53 Issue 6, p3005; Subject Term: IMAGE registration; Subject Term: LIKELIHOOD ratio tests; Subject Term: PROBABILITY density function; Subject Term: APPROXIMATION theory; Subject Term: SPECTRAL sensitivity; Author-Supplied Keyword: Change detection; Author-Supplied Keyword: generalized likelihood ratio test (GLRT); Author-Supplied Keyword: hyperspectral; Author-Supplied Keyword: misregistration; Number of Pages: 17p; Document Type: Article L3 - 10.1109/TGRS.2014.2367471 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102838722&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Woo-Yong Jang AU - Zahyun Ku AU - Urbas, Augustine AU - Derov, John AU - Noyola, Michael J. T1 - Plasmonic Superpixel Sensor for Compressive Spectral Sensing. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2015/06// VL - 53 IS - 6 M3 - Article SP - 3471 EP - 3480 SN - 01962892 AB - In multispectral and hyperspectral sensing, there is a growing need for a versatile sensor capable of adapting response and improving detection of hard-to-find dynamic targets of interest in contested environments. Such on-the-fly adaptivity in current systems requires significant data resources and computation time for data analysis. In order to implement practical systems with this capability, sensors that reduce data loads and computational requirements while maintaining performance are required. To this end, we report a novel hybrid algorithm sensor method using plasmon-based tunable superpixels and a compressive spectral sensing (CSS) algorithm for the next generation of hyperspectral sensors. The benefit of our hybrid approach is that it enables us to effectively sense a minimal data set and only performs simple arithmetic such as linear superposition to extract spectral features of a target without requiring actual spectral filters. In this paper, we focus on the selection of a minimum basis of plasmonic spectral bands, the configuration of superpixels using selected plasmonic structures, and finally the generalization of a CSS algorithm to process superpixel data for feature extractions. The performance of algorithm-driven superpixels has been successfully demonstrated with the context of reconstructing infrared spectral signatures. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERSPECTRAL imaging systems KW - SURFACE plasmon resonance KW - DATA analysis KW - FEATURE extraction (Data processing) KW - PIXELS KW - Compressive spectral sensing (CSS) KW - spectral reconstruction KW - superpixels KW - surface plasmon N1 - Accession Number: 102838750; Woo-Yong Jang 1; Email Address: jangusc@gmail.com Zahyun Ku 2; Email Address: zahyun.ku.ctr.kr@us.af.mil Urbas, Augustine 2; Email Address: augustine.urbas@us.af.mil Derov, John 3; Email Address: john.derov@us.af.mil Noyola, Michael J. 3; Email Address: michael.noyola@wpafb.af.mil; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433 USA 2: Materials Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433 USA 3: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA; Source Info: Jun2015, Vol. 53 Issue 6, p3471; Subject Term: HYPERSPECTRAL imaging systems; Subject Term: SURFACE plasmon resonance; Subject Term: DATA analysis; Subject Term: FEATURE extraction (Data processing); Subject Term: PIXELS; Author-Supplied Keyword: Compressive spectral sensing (CSS); Author-Supplied Keyword: spectral reconstruction; Author-Supplied Keyword: superpixels; Author-Supplied Keyword: surface plasmon; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TGRS.2014.2377634 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102838750&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mancini, Peter M. AU - Jones, Anya R. AU - Granlund, Kenneth O. AU - Ol, Michael V. T1 - Unsteady Aerodynamic Response of a Rapidly Started Flexible Wing. JO - International Journal of Micro Air Vehicles JF - International Journal of Micro Air Vehicles Y1 - 2015/06// VL - 7 IS - 2 M3 - Article SP - 147 EP - 157 SN - 17568293 AB - Effects of camber and camber-change due to elastic deflection for aspect ratio 4.25 wings were examined for the classical unsteady problem of rectilinear translational acceleration. Direct force measurements and flow visualization by laser illumination of fluorescent dye allowed for the tracking of force history vs. evolution of the flowfield of rigid flat, rigid cambered, and flexible membranous wings. At low incidence (10 degrees and below), Wagner's approximation provides an accurate prediction of the time-evolution of lift for the rigid wings, beyond which flow separation leads to peaks in the force history and the camber-effect is no longer additive to the incidence effect. Both the rigid uncambered and cambered wings reach peak lift at 35 degrees, whereas the flexible wing experiences a form of stall-delay and reaches peak lift at 50 degrees. Due to the aeroelasticity of the flexible membrane, flow over the suction surface remains attached for much higher incidence angles than for the rigid wings. For incidence angles less than 30 degrees, the flexible wing's peak lift is lower than that of its rigid counterparts. However, beyond 30 degrees, the flexible wing experiences an aeroelastically-induced stall delay that allows lift to exceed the rigid analogs. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Micro Air Vehicles is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UNSTEADY flow (Aerodynamics) KW - AIRPLANE wings KW - MICRO air vehicles KW - REYNOLDS number KW - FOURIER transforms N1 - Accession Number: 109563991; Mancini, Peter M. 1 Jones, Anya R. 1 Granlund, Kenneth O. 2 Ol, Michael V. 2; Affiliation: 1: Department of Aerospace Engineering, University of Maryland, College Park, MD 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH; Source Info: Jun2015, Vol. 7 Issue 2, p147; Subject Term: UNSTEADY flow (Aerodynamics); Subject Term: AIRPLANE wings; Subject Term: MICRO air vehicles; Subject Term: REYNOLDS number; Subject Term: FOURIER transforms; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109563991&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - ARADAĞ, Selin AU - SEIDEL, Jurgen AU - CUMMINGS, Russell M. AU - COOK, Layne T1 - AERODYNAMIC ANALYSIS OF A VERTICALLY LANDING LIFTING BODY. T2 - DİKEY İNİŞ YAPAN BİR ARACIN AERODİNAMİK ANALİZİ. JO - Isi Bilimi ve Teknigi Dergisi / Journal of Thermal Science & Technology JF - Isi Bilimi ve Teknigi Dergisi / Journal of Thermal Science & Technology Y1 - 2015/06// VL - 35 IS - 1 M3 - Article SP - 35 EP - 42 SN - 13003615 AB - The vertical landing lifting body (VLLB) is a new concept for reusable launch vehicles, which launches vertically, but re-enters the atmosphere at a high angle of attack (alpha) for its entire flight. The VLLB remains at high angles of attack through all Mach numbers under aerodynamic control until shortly before touchdown. One of the important risk areas for the VLLB concept concerns flight below Mach 2 at high angles of attack where the flow is dominated by separated, highly vortical behavior. The purpose of this study is to investigate the aerodynamic characteristics and control effectiveness of the high-alpha flow of the Hot Eagle Vertically Landing Lifting Body geometry. Several test cases were performed utilizing Detached Eddy Simulations (DES) to both analyze and control the flow over Hot Eagle geometry at different flow conditions. According to results of the time-dependent DES computations, the flow is symmetric and steady at both subsonic and transonic Mach numbers for both 45 and 60 degrees angle of attack. As the angle of attack or the Mach number increases, the vortices get stronger; but the flow remains steady and symmetric. This is probably because of the blunt nature of the nose and its cross-section. Symmetric and asymmetric blowing were performed to control the flow structure around the body. Different blowing rates have been investigated, and the vehicle is found to be controllable with reasonable amounts of blowing. (English) [ABSTRACT FROM AUTHOR] AB - Dikey iniş, yeniden kullanılabilen roketler için oldukça yeni bir konsepttir. Araçlar dikey olarak atılır, atmosfere yüksek hücum açısıyla girer ve uçuşu boyunca, aerodinamik kontrol altında, yüksek hücum açılarında kalır. İnişe çok yakın bir zamana kadar araç, tüm Mach sayıları için yüksek hücum açılarında kalır. Bu konseptle ilgili en önemli risk, Mach 2 altındaki akışlar içindir. Bu Mach sayılarında ve yüksek hücum açılarındaki durumlarda, ayrılmış ve girdaplı akışlar oldukça sık görülür. Bu çalışmanın amacı, yüksek hücum açıları için, dikey iniş yapan Hot Eagle araç geometrisinin aerodinamik özelliklerinin ve kontrol edilebilme stratejilerinin incelenmesidir. Detached Eddy Simulation (DES) yöntemiyle çeşitli test durumları incelenmiş, farklı akış koşulları için araç geometrisinin kontrolü ile ilgili analizler gerçekleştirilmiştir. Zamana bağlı DES sonuçlarına göre, test edilen sesaltı ve transonic Mach sayıları için, 45 ve 60 dercelik hücum açılarında, akış, simetrik ve zamana bağlı değişmeyen akış niteliği göstermektedir. Mach sayısı veya hücum açısı arttıkça, girdaplar güçlenmekte; fakat akışın simetrik ve zamana bağlı değişmeyen tabiatında değişiklik olmamaktadır. Bunun sebebinin aracın uç kısmının küt cisim olma özelliğinden kaynaklandığı düşünülmektedir. Simetrik ve antisimetrik olarak hava üflemenin akış üzerindeki etkileri incelenmiş, çeştli üfleme hızlarında, akışın kontrol edilebilir olduğu gözlemlenmiştir. (Turkish) [ABSTRACT FROM AUTHOR] AB - Copyright of Isi Bilimi ve Teknigi Dergisi / Journal of Thermal Science & Technology is the property of Turkish Society for Thermal Sciences & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - LIFTING bodies (Aeronautics) KW - SIMULATION methods & models KW - FANS (Machinery) KW - FLOW (Fluid dynamics) KW - aerodinamik KW - aerodynamics KW - akış kontrolü KW - blowing KW - computational fluid dynamics KW - dikey iniş KW - flow control KW - hava üfleme KW - hesaplamalı akışkanlar dinamiği KW - vertical landing KW - aerodinamik KW - akış kontrolü KW - dikey iniş KW - hava üfleme KW - hesaplamalı akışkanlar dinamiği N1 - Accession Number: 102345650; ARADAĞ, Selin 1; Email Address: saradag@etu.edu.tr SEIDEL, Jurgen 2 CUMMINGS, Russell M. 2 COOK, Layne 3; Affiliation: 1: TOBB University of Economics and Technology, Ankara, 06560, Turkey 2: United States Air Force Academy, USAF Academy, CO, 80840 3: Universal Space Lines LLC, Broomfield, CO, 80020; Source Info: 2015, Vol. 35 Issue 1, p35; Subject Term: AERODYNAMICS; Subject Term: LIFTING bodies (Aeronautics); Subject Term: SIMULATION methods & models; Subject Term: FANS (Machinery); Subject Term: FLOW (Fluid dynamics); Author-Supplied Keyword: aerodinamik; Author-Supplied Keyword: aerodynamics; Author-Supplied Keyword: akış kontrolü; Author-Supplied Keyword: blowing; Author-Supplied Keyword: computational fluid dynamics; Author-Supplied Keyword: dikey iniş; Author-Supplied Keyword: flow control; Author-Supplied Keyword: hava üfleme; Author-Supplied Keyword: hesaplamalı akışkanlar dinamiği; Author-Supplied Keyword: vertical landing; Author-Supplied Keyword: aerodinamik; Author-Supplied Keyword: akış kontrolü; Author-Supplied Keyword: dikey iniş; Author-Supplied Keyword: hava üfleme; Author-Supplied Keyword: hesaplamalı akışkanlar dinamiği; Language of Keywords: English; Language of Keywords: Turkish; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102345650&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heimbuch, B.K. AU - Harnish, D.A. AU - Balzli, C. AU - Lumley, A. AU - Kinney, K. AU - Wander, J.D. T1 - Aerosol-phase activity of iodine captured from a triiodide resin filter on fine particles containing an infectious virus. JO - Journal of Applied Microbiology JF - Journal of Applied Microbiology Y1 - 2015/06// VL - 118 IS - 6 M3 - Article SP - 1315 EP - 1320 PB - Wiley-Blackwell SN - 13645072 AB - Aims To avoid interference by water-iodine disinfection chemistry and measure directly the effect of iodine, captured from a triiodide complex bound to a filter medium, on viability of penetrating viral particles. Methods and Results Aerosols of MS2 coli phage were passed through control P100 or iodinated High-Efficiency Particulate Air media, collected in plastic bags, incubated for 0-10 min, collected in an impinger containing thiosulphate to consume all unreacted iodine, plated and enumerated. Comparison of viable counts demonstrated antimicrobial activity with an apparent half-life for devitalization in tens of seconds; rate of kill decreased at low humidity and free iodine was captured by the bags. Conclusions The results support the mechanism of near-contact capture earlier proposed; however, the disinfection chemistry in the aerosol phase is very slow on the time scale of inhalation. Significance and Impact of the Study This study shows that disinfection by filter-bound iodine in the aerosol phase is too slow to be clinically significant in individual respiratory protection, but that it might be of benefit to limit airborne transmission of infections in enclosed areas. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Microbiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Atmospheric aerosols KW - Iodine KW - Bacteriophages KW - Disinfection & disinfectants KW - Anti-infective agents KW - Humidity KW - Airborne infection -- Prevention KW - antimicrobials KW - contact-release mechanism KW - iodine KW - MS2 coli phage KW - respiratory protection KW - viruses N1 - Accession Number: 102667495; Heimbuch, B.K. 1; Harnish, D.A. 1; Balzli, C. 2; Lumley, A. 1; Kinney, K. 1; Wander, J.D. 3; Affiliations: 1: Applied Research Associates; 2: Materials and Manufacturing Division, Universal Technology Corporation; 3: Air Force Civil Engineer Center; Issue Info: Jun2015, Vol. 118 Issue 6, p1315; Thesaurus Term: Atmospheric aerosols; Thesaurus Term: Iodine; Thesaurus Term: Bacteriophages; Thesaurus Term: Disinfection & disinfectants; Thesaurus Term: Anti-infective agents; Thesaurus Term: Humidity; Subject Term: Airborne infection -- Prevention; Author-Supplied Keyword: antimicrobials; Author-Supplied Keyword: contact-release mechanism; Author-Supplied Keyword: iodine; Author-Supplied Keyword: MS2 coli phage; Author-Supplied Keyword: respiratory protection; Author-Supplied Keyword: viruses; NAICS/Industry Codes: 325612 Polish and Other Sanitation Good Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1111/jam.12788 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=102667495&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Beck, Joseph A. AU - Brown, Jeffrey M. AU - Kaszynski, Alexander A. AU - Slater, Joseph C. AU - Cross, Charles J. T1 - Mistuned Response Prediction of Dual Flow-Path Integrally Bladed Rotors With Geometric Mistuning. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2015/06// VL - 137 IS - 6 M3 - Article SP - 1 EP - 9 SN - 07424795 AB - The geometric mistuning problem is investigated for dual flow-path integrally bladed rotors (DFIBRs) by outlining two methods that explicitly account for blade geometry surface deviations. The methods result in reduced-order models (ROMs) that are a reduced form of a parent Craig-Bampton component mode synthesis (CB-CMS) model. This is accomplished by performing a secondary modal analysis on different degrees of freedom (DOF) of the parent model. The DFIBR is formulated in cyclic symmetry coordinates with a tuned disk and ring and blades with small geometric deviations. The first method performs an eigen-analysis on the constraint DOF that provides a truncated set of interface modes, while the second method includes the disk and ring fixed interface normal mode in the eigen-analysis to yield a truncated set of ancillary modes. Utilization of tuned modes have the benefit of being solved in cyclic symmetry coordinates and only need to be calculated once, which offers significant computational savings for subsequent mistuning studies. Each geometric mistuning method relies upon the use of geometrically mistimed blade modes in the component mode framework to provide an accurate ROM. Forced response results are compared to both the full finite element model (FEM) solutions and a traditional frequency-based approach outlined in a previous effort. It is shown that the models provide highly accurate results with a significant reduction in solution time compared to the full FEM and parent ROM. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS turbines -- Rotors KW - RESEARCH KW - ROTORS KW - REDUCED-order models KW - DEGREES of freedom KW - GEOMETRY N1 - Accession Number: 103699882; Beck, Joseph A. 1; Email Address: Joseph.Beck.8@us.af.mil Brown, Jeffrey M. 2; Email Address: Jeffrey.Brown.70@us.af.mil Kaszynski, Alexander A. 3; Email Address: Alex.Kaszynski.ctr@us.af.mil Slater, Joseph C. 4; Email Address: Joseph.Slater@wright.edu Cross, Charles J. 5; Email Address: Charles.Cross.1@wpafb.af.mil; Affiliation: 1: Manufacturing and Industrial Technologies Division, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 2: Turbine Engine Division, Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, OH 45433 3: Aerospace Engineer, Turbine Engine Division, Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, OH 45433 4: Professor, Department of Mechanical and Materials Engineering, Wright State University, OH 45435 5: Chief, Turbine Engine Division, Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, OH 45433; Source Info: Jun2015, Vol. 137 Issue 6, p1; Subject Term: GAS turbines -- Rotors; Subject Term: RESEARCH; Subject Term: ROTORS; Subject Term: REDUCED-order models; Subject Term: DEGREES of freedom; Subject Term: GEOMETRY; Number of Pages: 9p; Document Type: Article L3 - 10.1115/1.4028795 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103699882&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 103792973 T1 - Designing for military pararescue: Naturalistic decision-making perspective, methods, and frameworks. AU - Militello, Laura G. AU - Sushereba, Christen E. AU - Branlat, Matthieu AU - Bean, Robert AU - Finomore, Victor Y1 - 2015/06// N1 - Accession Number: 103792973. Language: English. Entry Date: 20150504. Revision Date: 20160531. Publication Type: Journal Article; pictorial; research; tables/charts. Journal Subset: Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Europe; Expert Peer Reviewed; Peer Reviewed; UK & Ireland. Special Interest: Psychiatry/Psychology. Grant Information: This project was sponsored by the Air Force Research Laboratory under Contract No. FA8650-08-D-6801.. NLM UID: 9209845. KW - Decision Making KW - Information Technology KW - Emergency Medical Services KW - Human KW - Natural Environment KW - Conceptual Framework KW - Models, Theoretical KW - Interviews KW - Observational Methods KW - Audit KW - Funding Source SP - 251 EP - 272 JO - Journal of Occupational & Organizational Psychology JF - Journal of Occupational & Organizational Psychology JA - J OCCUP ORGAN PSYCHOL VL - 88 IS - 2 CY - Malden, Massachusetts PB - Wiley-Blackwell AB - Naturalistic decision-making (NDM) research offers important guidance for designing information technology to be used by people who conduct extreme activities in extreme environments, such as military special operators. Recent advances in technology make it possible to deploy information technology in extreme environments (e.g., desert, arctic, high altitude, underwater) to support people who engage in complex and dangerous activities. This practitioner case integrates and operationalizes relevant NDM research including an NDM perspective, methods (cognitive task analysis, staged world exercise, and functional analysis), and frameworks (macrocognition, Laws that Govern Cognitive Work in Action, and Cognitive Performance Indicators) to inform design and identify the potential pitfalls associated with introducing information technology into extreme environments. A project conducted with the United States Air Force pararescue jumpers illustrates the complexity and relevance of NDM research in this challenging design space. Pararescue jumpers are military personnel who specialize in recovering personnel and administering life-saving medical treatment in a wide variety of operational environments. SN - 0963-1798 AD - Applied Decision Science, LLC, Dayton, Ohio, USA AD - 361 Interactive, LLC, Springboro, Ohio, USA AD - U.S. Air Force, 88th Test and Evaluation Squadron, Nellis Air Force Base, Nevada,USA AD - U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, USA DO - 10.1111/joop.12114 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=103792973&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Hay, Randall S. AU - Fair, Geoff E. AU - Tidball, Travis T1 - Fiber Strength After Grain Growth in Nextel™ 610 Alumina Fiber. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2015/06// VL - 98 IS - 6 M3 - Article SP - 1907 EP - 1914 PB - Wiley-Blackwell SN - 00027820 AB - Nextel™ 610 alumina fiber tows were heat-treated at 1100°C-1500°C for 1 to 100 h in air. Tensile strengths and Weibull moduli were measured for 30 filaments after each heat-treatment. 3-D grain size and orientation distributions were described using oblate ellipsoids. The number of grains in a 1 inch gauge length and grains with the largest major and minor ellipsoid-axes were determined from these distributions. The grain with the largest KEFF for mixed-mode fracture was also determined, using the maximum energy release rate criteria from grain-size and orientation distributions. Grain-size dependence of tensile strength and Weibull modulus was evaluated. Strength had no obvious dependence on grain size for fibers with average major-axes smaller than 0.25 μm. For fibers with larger grains, grain-size dependence may involve flaws originating from clumps of grains, rather than a single grain. Possible relationships between strength and grain-size and other causes of strength degradation after heat-treatment are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL crystals -- Growth KW - ALUMINUM oxide KW - METAL fibers KW - HEAT treatment KW - TENSILE strength KW - ELLIPSOIDS N1 - Accession Number: 103105306; Hay, Randall S. 1 Fair, Geoff E. 1 Tidball, Travis 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB 2: Wright State University; Source Info: Jun2015, Vol. 98 Issue 6, p1907; Subject Term: METAL crystals -- Growth; Subject Term: ALUMINUM oxide; Subject Term: METAL fibers; Subject Term: HEAT treatment; Subject Term: TENSILE strength; Subject Term: ELLIPSOIDS; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 8p; Document Type: Article L3 - 10.1111/jace.13523 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103105306&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eden, Paul R. T1 - Laboratory testing and pathological identification of cancer. JO - MLO: Medical Laboratory Observer JF - MLO: Medical Laboratory Observer Y1 - 2015/06// VL - 47 IS - 6 M3 - Article SP - 22 EP - 24 PB - NP Communications, LLC SN - 05807247 AB - The article discusses the role of the laboratory in the pathological identification of cancer. Topics discussed include routine screening tests like complete blood count (CBC), and new tests such as Prostarix metabolic test and ProMark multiple protein biomarker platform, use of diagnostic imaging scans, and pathological analysis including hematological blood smear review, and tissue biopsies. It also mentions histological examination and ancillary testing such as immunohistochemistry (IHC). KW - TUMORS -- Diagnosis KW - BIOPSY KW - CLINICAL pathology KW - IMMUNOHISTOCHEMISTRY KW - MOLECULAR diagnosis KW - EARLY detection of cancer N1 - Accession Number: 103003269; Eden, Paul R. 1; Affiliation: 1: Molecular Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, 711 HPW/ RHDJ, Air Force Research Laboratory, Wright Patterson AFB; Source Info: Jun2015, Vol. 47 Issue 6, p22; Subject Term: TUMORS -- Diagnosis; Subject Term: BIOPSY; Subject Term: CLINICAL pathology; Subject Term: IMMUNOHISTOCHEMISTRY; Subject Term: MOLECULAR diagnosis; Subject Term: EARLY detection of cancer; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103003269&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 109792439 T1 - Laboratory testing and pathological identification of cancer. AU - Eden, Paul R. Y1 - 2015/06// N1 - Accession Number: 109792439. Language: English. Entry Date: 20150608. Revision Date: 20151008. Publication Type: Journal Article; pictorial. Journal Subset: Allied Health; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Laboratory Diagnosis; Oncologic Care. NLM UID: 0225602. KW - Neoplasms -- Diagnosis KW - Diagnosis, Laboratory -- Methods KW - Early Detection of Cancer KW - Biopsy KW - Immunohistochemistry KW - Molecular Diagnostic Techniques KW - Cancer Screening SP - 22 EP - 24 JO - MLO: Medical Laboratory Observer JF - MLO: Medical Laboratory Observer JA - MLO VL - 47 IS - 6 CY - Sarasota, Florida PB - NP Communications, LLC SN - 0580-7247 AD - Molecular Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, 711 HPW/ RHDJ, Air Force Research Laboratory, Wright Patterson AFB UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109792439&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Uskov, D. B. AU - Lougovski, P. AU - Alsing, P. M. AU - Fanto, M. L. AU - Kaplan, L. AU - Smith, A. Matthew T1 - Optimal mode transformations for linear-optical cluster-state generation. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2015/06// VL - 91 IS - 6-A M3 - Article SP - 1 EP - 5 SN - 10502947 AB - We analyze the generation of linear-optical cluster states (LOCSs) via sequential addition of one and two qubits. Existing approaches employ the stochastic linear-optical two-qubit controlled-Z (cz) gate with success rate of 1/9 per operation. The question of optimality of the c z gate with respect to LOCS generation has remained open. We report that there are alternative schemes to the CZ gate that are exponentially more efficient and show that sequential LOCS growth is indeed globally optimal. We find that the optimal cluster growth operation is a state transformation on a subspace of the full Hilbert space. We show that the maximal success rate of postselected entangling n photonic qubits or m Bell pairs into a cluster is (1/2)n-1 and (1/4)m-1, respectively, with no ancilla photons, and we give an explicit optical description of the optimal mode transformations. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTIMAL control theory KW - PHASE transformations (Physics) KW - QUBITS KW - QUANTUM states KW - HILBERT space N1 - Accession Number: 108491262; Uskov, D. B. 1,2; Email Address: dmitry.uskov@brescia.edu Lougovski, P. 3 Alsing, P. M. 4 Fanto, M. L. 4 Kaplan, L. 2 Smith, A. Matthew 3,4; Affiliation: 1: Department of Mathematics and Natural Sciences, Brescia University, Owenshoro, Kentucky 42301, USA 2: Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, USA 3: Quantum Information Science Group, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 4: Air Force Research Laboratory, Information Directorate, Rome, New York 13440, USA; Source Info: Jun2015, Vol. 91 Issue 6-A, p1; Subject Term: OPTIMAL control theory; Subject Term: PHASE transformations (Physics); Subject Term: QUBITS; Subject Term: QUANTUM states; Subject Term: HILBERT space; Number of Pages: 5p; Document Type: Article L3 - 10.1103/PhysRevA.91.062318 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108491262&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tianxiang Nan AU - Emori, Satoru AU - Boone, Carl T. AU - Xinjun Wang AU - Oxholm, Trevor M. AU - Jones, John G. AU - Howe, Brandon M. AU - Brown, Gail J. AU - Sun, Nian X. T1 - Comparison of spin-orbit torques and spin pumping across NiFe/Pt and NiFe/Cu/Pt interfaces. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2015/06// VL - 91 IS - 21 M3 - Article SP - 214416-1 EP - 214416-9 SN - 10980121 AB - We experimentally investigate spin-orbit torques and spin pumping in NiFe/Pt bilayers with direct and interrupted interfaces. The dampinglike and fieldlike torques are simultaneously measured with spin-torque ferromagnetic resonance tuned by a dc-bias current, whereas spin pumping is measured electrically through the inverse spin-Hall effect using a microwave cavity. Insertion of an atomically thin Cu dusting layer at the interface reduces the dampinglike torque, fieldlike torque, and spin pumping by nearly the same factor of ≈1.4. This finding confirms that the observed spin-orbit torques predominantly arise from diffusive transport of spin current generated by the spin-Hall effect. We also find that spin-current scattering at the NiFe/Pt interface contributes to additional enhancement in magnetization damping that is distinct from spin pumping. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPIN-orbit coupling constants KW - BILAYERS (Solid state physics) KW - FERROMAGNETIC resonance KW - HALL effect devices KW - MAGNETIZATION N1 - Accession Number: 108721200; Tianxiang Nan 1 Emori, Satoru 1; Email Address: s.emori@neu.edu Boone, Carl T. 2 Xinjun Wang 1 Oxholm, Trevor M. 1 Jones, John G. 3 Howe, Brandon M. 3 Brown, Gail J. 3 Sun, Nian X. 1; Email Address: n.sun@neu.edu; Affiliation: 1: Department of Electrical and Computer Engineering, Northeastern University, Boston, Massachusetts 02115, USA 2: Department of Physics, Boston University, Boston, Massachusetts 02215, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA; Source Info: Jun2015, Vol. 91 Issue 21, p214416-1; Subject Term: SPIN-orbit coupling constants; Subject Term: BILAYERS (Solid state physics); Subject Term: FERROMAGNETIC resonance; Subject Term: HALL effect devices; Subject Term: MAGNETIZATION; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1103/PhysRevB.91.214416 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108721200&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jacob B Schmidt AU - Brian L Sands AU - Waruna D Kulatilaka AU - Sukesh Roy AU - James Scofield AU - James R Gord T1 - Femtosecond, two-photon laser-induced-fluorescence imaging of atomic oxygen in an atmospheric-pressure plasma jet. JO - Plasma Sources Science & Technology JF - Plasma Sources Science & Technology Y1 - 2015/06// VL - 24 IS - 3 M3 - Article SP - 1 EP - 1 SN - 09630252 AB - Femtosecond, two-photon-absorption laser-induced-fluorescence (fs-TALIF) spectroscopy is employed to measure space- and time-resolved atomic-oxygen distributions in a nanosecond, repetitively pulsed, externally grounded, atmospheric-pressure plasma jet flowing helium with a variable oxygen admixture. The high-peak-intensity, low-average-energy femtosecond pulses result in increased TALIF signal with reduced photolytic inferences. This allows 2D imaging of absolute atomic-oxygen number densities ranging from 5.8   ×   1015 to 2.0   ×   1012cm−3 using a cooled CCD with an external intensifier. Xenon is used for signal and imaging-system calibrations to quantify the atomic-oxygen fluorescence signal. Initial results highlight a transition in discharge morphology from annular to filamentary, corresponding with a change in plasma chemistry from ozone to atomic oxygen production, as the concentration of oxygen in the feed gas is changed at a fixed voltage-pulse-repetition rate. In this configuration, significant concentrations of reactive oxygen species may be remotely generated by sustaining an active discharge beyond the confines of the dielectric capillary, which may benefit applications that require large concentrations of reactive oxygen species such as material processing or biomedical devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Plasma Sources Science & Technology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FEMTOSECOND lasers -- Research KW - LASER-induced fluorescence KW - RESEARCH KW - LASER-induced breakdown spectroscopy KW - OXYGEN KW - ATMOSPHERIC pressure KW - PLASMA jets N1 - Accession Number: 103392711; Jacob B Schmidt 1 Brian L Sands 2 Waruna D Kulatilaka 1 Sukesh Roy 1; Email Address: roy.sukesh@gmail.com James Scofield 3 James R Gord 3; Email Address: james.gord@us.af.mil; Affiliation: 1: Spectral Energies, LLC., Dayton OH 45431, USA 2: UES, Inc., Dayton OH 43432, USA 3: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB OH 45433, USA; Source Info: Jun2015, Vol. 24 Issue 3, p1; Subject Term: FEMTOSECOND lasers -- Research; Subject Term: LASER-induced fluorescence; Subject Term: RESEARCH; Subject Term: LASER-induced breakdown spectroscopy; Subject Term: OXYGEN; Subject Term: ATMOSPHERIC pressure; Subject Term: PLASMA jets; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0963-0252/24/3/032004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103392711&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reames, Donald AU - Cliver, Edward AU - Kahler, Stephen T1 - Temperature of the Source Plasma for Impulsive Solar Energetic Particles. JO - Solar Physics JF - Solar Physics Y1 - 2015/06// VL - 290 IS - 6 M3 - Article SP - 1761 EP - 1774 PB - Springer Science & Business Media B.V. SN - 00380938 AB - The steep power-law dependence of element abundance enhancements on the mass-to-charge ratios [ $A/Q$] of the ions in impulsive solar energetic-particle (SEP) events causes these enhancements to reflect the temperature-dependent pattern of $Q$ of the ions in the source plasma. We searched for SEP events from coronal plasma that is hotter or cooler than the limited region of 2.5 - 3.2 MK previously found to dominate 111 impulsive SEP events. Fifteen new events were found, four (three) originating in 2-MK (4-MK) plasma, but none from outside this temperature range. Although the impulsive SEP events are strongly associated with flares, this result indicates that these ions are not accelerated from flare-heated plasma, which can often exceed 10 MK. Evidently the ions of $2\,\mbox{--}\,20~\mbox{MeV}\,\mbox{amu}^{-1}$ that we observe in space are accelerated from active-region plasma on open magnetic-field lines near the flare, but not from the closed loops of the flare. The power-law dependence of the abundance enhancements on $A/Q$ of the ions is expected from theoretical models of acceleration from regions of magnetic reconnection. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR energetic particles KW - PLASMA temperature KW - MASS-to-charge ratio KW - ACCELERATION (Mechanics) KW - SOLAR flares KW - CORONAL mass ejections KW - Coronal mass ejections KW - Solar energetic particles KW - Solar flares KW - Solar system abundances N1 - Accession Number: 108330339; Reames, Donald 1; Email Address: dvreames@umd.edu Cliver, Edward 2; Email Address: ecliver@nso.edu Kahler, Stephen 3; Email Address: stephen.kahler@kirtland.af.mil; Affiliation: 1: Institute for Physical Science and Technology, University of Maryland, College Park 20742-2431 USA 2: Space Vehicles Directorate, Air Force Research Laboratory, Sunspot 88349 USA 3: Space Vehicles Directorate, Air Force Research Laboratory, 3550 Aberdeen Avenue, Kirtland AFB Albuquerque 87117 USA; Source Info: Jun2015, Vol. 290 Issue 6, p1761; Subject Term: SOLAR energetic particles; Subject Term: PLASMA temperature; Subject Term: MASS-to-charge ratio; Subject Term: ACCELERATION (Mechanics); Subject Term: SOLAR flares; Subject Term: CORONAL mass ejections; Author-Supplied Keyword: Coronal mass ejections; Author-Supplied Keyword: Solar energetic particles; Author-Supplied Keyword: Solar flares; Author-Supplied Keyword: Solar system abundances; Number of Pages: 14p; Document Type: Article L3 - 10.1007/s11207-015-0711-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108330339&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Siefring, Carl AU - Bernhardt, Paul AU - James, H. AU - Parris, Richard T1 - The CERTO Beacon on CASSIOPE/e-POP and Experiments Using High-Power HF Ionospheric Heaters. JO - Space Science Reviews JF - Space Science Reviews Y1 - 2015/06// VL - 189 IS - 1-4 M3 - Article SP - 107 EP - 122 PB - Springer Science & Business Media B.V. SN - 00386308 AB - A new Coherent Electromagnetic Radio Tomography (CERTO) beacon is on the CASSIOPE satellite and part of the enhanced-Polar Outflow Probe (e-POP) suite of scientific instruments. CERTO signals can be used to measure ionospheric Total Electron Content (TEC) and radio scintillations along propagation paths between CERTO and receivers. The combination of CERTO and the array of e-POP in-situ diagnostics form a powerful tool for studying ionospheric plasma processes that have not been previously possible. Of note, the combination CERTO and the Radio Receiver Instrument (RRI), a modern digital receiver, which measures between 10 Hz to 18 MHz in selectable bands allows for innovative High Frequency (HF) radio propagation experiments. The use of high-power HF ionospheric heating facilities for such experiments further allows for repeatable studies of a number of important plasma processes. The new CERTO beacon transmits un-modulated, phase-coherent waves at 150, 400, and 1067 MHz with either right-hand-circular or linear polarization and TEC is measured using either differential phase and/or Faraday rotation. With a linear array of CERTO receivers, TEC data can be used for tomographic imaging of the ionosphere yielding two-dimensional maps of the plasma below the satellite orbit. In addition, the three CERTO frequencies cover a wide range for determination of radio scintillation effects caused by diffraction from propagation through ionospheric irregularities. We will describe the CERTO beacon and several potential innovative experiments using HF heating facilities in conjunction with CERTO, the RRI and other e-POP instruments. [ABSTRACT FROM AUTHOR] AB - Copyright of Space Science Reviews is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COHERENT states KW - MAGNETIC induction tomography KW - SHORTWAVE radio propagation KW - IONOSPHERE KW - TOTAL electron content (Atmosphere) KW - RADIO receiving apparatus KW - CERTO beacon KW - Field aligned irregularities KW - Ionosphere heating KW - Ionospheric physics KW - Ionospheric tomography KW - Radio physics KW - Scintillations KW - Total electron content N1 - Accession Number: 103169036; Siefring, Carl 1; Email Address: carl.siefring@nrl.navy.mil Bernhardt, Paul 1 James, H. 2 Parris, Richard 3; Affiliation: 1: Plasma Physics Division, Naval Research Laboratory, Washington 20375 USA 2: University of Calgary, Calgary T2N 1N4 Canada 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB 67117 USA; Source Info: Jun2015, Vol. 189 Issue 1-4, p107; Subject Term: COHERENT states; Subject Term: MAGNETIC induction tomography; Subject Term: SHORTWAVE radio propagation; Subject Term: IONOSPHERE; Subject Term: TOTAL electron content (Atmosphere); Subject Term: RADIO receiving apparatus; Author-Supplied Keyword: CERTO beacon; Author-Supplied Keyword: Field aligned irregularities; Author-Supplied Keyword: Ionosphere heating; Author-Supplied Keyword: Ionospheric physics; Author-Supplied Keyword: Ionospheric tomography; Author-Supplied Keyword: Radio physics; Author-Supplied Keyword: Scintillations; Author-Supplied Keyword: Total electron content; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 414210 Home entertainment equipment merchant wholesalers; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 334310 Audio and Video Equipment Manufacturing; Number of Pages: 16p; Document Type: Article L3 - 10.1007/s11214-014-0110-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103169036&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - HARRINGTON, KATHLEEN T1 - No Man's War. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2015/06// VL - 27 M3 - Interview SP - 1 EP - 14 PB - US Air Force Academy English Department SN - 10466967 AB - An interview with Angela Rickett, author of the book "No Man's War" is presented. She states that she relied heavily on journals for basic facts and state of mind. She notes that she wrote the book from her gut and not from her heart. She mentions that the book "No Man's War" has entrenched her further into culture and identity that her husband has put in his past. KW - PERIODICALS KW - WRITING KW - WOMEN authors KW - RICKETT, Angela -- Interviews KW - NO Man's War: Irreverent Confessions of an Infantry Wife (Book) N1 - Accession Number: 120090344; HARRINGTON, KATHLEEN 1; Affiliation: 1: Permanent Professor for English and Fine Arts, United States Air Force Academy, Colorado; Source Info: 2015, Vol. 27, p1; Subject Term: PERIODICALS; Subject Term: WRITING; Subject Term: WOMEN authors; Reviews & Products: NO Man's War: Irreverent Confessions of an Infantry Wife (Book); NAICS/Industry Codes: 323119 Other printing; NAICS/Industry Codes: 414420 Book, periodical and newspaper merchant wholesalers; NAICS/Industry Codes: 424920 Book, Periodical, and Newspaper Merchant Wholesalers; NAICS/Industry Codes: 451212 News Dealers and Newsstands; NAICS/Industry Codes: 451310 Book stores and news dealers; People: RICKETT, Angela -- Interviews; Number of Pages: 14p; Document Type: Interview UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120090344&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - PURIO, SEAN T1 - Burned Bones Deserve No Repose Patrick Hicks's The Commandant of Lubizec. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2015/06// VL - 27 M3 - Book Review SP - 1 EP - 14 PB - US Air Force Academy English Department SN - 10466967 KW - HOLOCAUST (1939-1945) KW - NONFICTION KW - HICKS, Patrick KW - COMMANDANT of Lubizec: A Novel of the Holocaust & Operation Reinhard, The (Book) N1 - Accession Number: 120090346; PURIO, SEAN 1; Affiliation: 1: United States Air Force Academy; Source Info: 2015, Vol. 27, p1; Subject Term: HOLOCAUST (1939-1945); Subject Term: NONFICTION; Reviews & Products: COMMANDANT of Lubizec: A Novel of the Holocaust & Operation Reinhard, The (Book); People: HICKS, Patrick; Number of Pages: 14p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120090346&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Swain, Kristine T1 - The Baron's Cloak A History of The Russian Empire in War and Revolution. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2015/06// VL - 27 M3 - Book Review SP - 1 EP - 5 PB - US Air Force Academy English Department SN - 10466967 KW - HISTORY KW - NONFICTION KW - RUSSIA KW - SUNDERLAND, Willard KW - BARON'S Cloak: A History of the Russian Empire in War & Revolution, The (Book) N1 - Accession Number: 120090425; Swain, Kristine 1; Affiliation: 1: United States Air Force Academy; Source Info: 2015, Vol. 27, p1; Subject Term: HISTORY; Subject Term: NONFICTION; Subject Term: RUSSIA; Reviews & Products: BARON'S Cloak: A History of the Russian Empire in War & Revolution, The (Book); People: SUNDERLAND, Willard; Number of Pages: 5p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120090425&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kennedy, Michael David T1 - The Oxford Illustrated History of the First World War. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2015/06// VL - 27 M3 - Book Review SP - 9 EP - 12 PB - US Air Force Academy English Department SN - 10466967 KW - WORLD War, 1914-1918 KW - NONFICTION KW - STRACHAN, Hew KW - OXFORD Illustrated History of the First World War, The (Book) N1 - Accession Number: 120090427; Kennedy, Michael David 1; Affiliation: 1: United States Air Force Academy; Source Info: 2015, Vol. 27, p9; Subject Term: WORLD War, 1914-1918; Subject Term: NONFICTION; Reviews & Products: OXFORD Illustrated History of the First World War, The (Book); People: STRACHAN, Hew; Number of Pages: 4p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120090427&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Copeland, Jeffrey C. T1 - You Are Not Forgotten: The Story of a Lost WWII Pilot and a Twenty-First Century Soldier's Mission to Bring Him Home. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2015/06// VL - 27 M3 - Book Review SP - 23 EP - 25 PB - US Air Force Academy English Department SN - 10466967 KW - AIR pilots KW - NONFICTION KW - BENDER, Brian KW - YOU Are Not Forgotten: The Story of a Lost World War II Pilot & a 21st-Century Soldier's Mission to Bring Him Home (Book) N1 - Accession Number: 120090431; Copeland, Jeffrey C. 1; Affiliation: 1: United States Air Force Academy; Source Info: 2015, Vol. 27, p23; Subject Term: AIR pilots; Subject Term: NONFICTION; Reviews & Products: YOU Are Not Forgotten: The Story of a Lost World War II Pilot & a 21st-Century Soldier's Mission to Bring Him Home (Book); People: BENDER, Brian; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120090431&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jennings, John M. T1 - Japan 1941: Countdown to Infamy. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2015/06// VL - 27 M3 - Book Review SP - 38 EP - 40 PB - US Air Force Academy English Department SN - 10466967 KW - HISTORY KW - NONFICTION KW - JAPAN KW - HOTTA, Eri KW - JAPAN 1941: Countdown to Infamy (Book) N1 - Accession Number: 120090435; Jennings, John M. 1; Affiliation: 1: United States Air Force Academy; Source Info: 2015, Vol. 27, p38; Subject Term: HISTORY; Subject Term: NONFICTION; Subject Term: JAPAN; Reviews & Products: JAPAN 1941: Countdown to Infamy (Book); People: HOTTA, Eri; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=120090435&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2015-24302-001 AN - 2015-24302-001 AU - Blaha, Leslie M. AU - Houpt, Joseph W. T1 - An extension of workload capacity space for systems with more than two channels. JF - Journal of Mathematical Psychology JO - Journal of Mathematical Psychology JA - J Math Psychol Y1 - 2015/06// VL - 66 SP - 1 EP - 5 CY - Netherlands PB - Elsevier Science SN - 0022-2496 SN - 1096-0880 AD - Blaha, Leslie M., Warfighter Interface Division, Air Force Research Laboratory, Wright-Patterson AFB, OH, US, 45433 N1 - Accession Number: 2015-24302-001. Partial author list: First Author & Affiliation: Blaha, Leslie M.; Warfighter Interface Division, Air Force Research Laboratory, Wright-Patterson AFB, OH, US. Release Date: 20150727. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Blaha, Leslie M. Major Descriptor: Cognitive Psychology; Information Processing Model; Mathematical Psychology; Systems; Parallel Distributed Processing. Minor Descriptor: Human Channel Capacity; Time. Classification: Statistics & Mathematics (2240); Intelligent Systems (4100). Population: Human (10). Methodology: Empirical Study; Mathematical Model; Quantitative Study. Page Count: 5. Issue Publication Date: Jun, 2015. Publication History: First Posted Date: Apr 5, 2015; Revised Date: Jan 8, 2015; First Submitted Date: Feb 17, 2014. AB - We provide the n-channel extension of the unified workload capacity space bounds for standard parallel processing models with minimum-time, maximum-time, and single-target self-terminating stopping rules. This extension enables powerful generalizations of this approach to multiple stopping rules and any number of channels of interest. Mapping the bounds onto the unified capacity space enables a single plot to be used to compare the capacity coefficient values to the upper and lower bounds on standard parallel processing in order to make direct inferences about extreme workload capacity. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Workload KW - Capacity KW - Human information processing KW - Race model KW - 2015 KW - Cognitive Psychology KW - Information Processing Model KW - Mathematical Psychology KW - Systems KW - Parallel Distributed Processing KW - Human Channel Capacity KW - Time KW - 2015 U1 - Sponsor: US Air Force Office of Scientific Research, US. Grant: 12RH14COR. Recipients: Blaha, Leslie M. U1 - Sponsor: US Air Force Office of Scientific Research, US. Grant: FA9550-13-1-0087. Recipients: Houpt, Joseph W. DO - 10.1016/j.jmp.2015.01.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-24302-001&site=ehost-live&scope=site UR - joseph.houpt@wright.edu UR - leslie.blaha@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-15428-001 AN - 2015-15428-001 AU - Militello, Laura G. AU - Sushereba, Christen E. AU - Branlat, Matthieu AU - Bean, Robert AU - Finomore, Victor T1 - Designing for military pararescue: Naturalistic decision‐making perspective, methods, and frameworks. JF - Journal of Occupational and Organizational Psychology JO - Journal of Occupational and Organizational Psychology JA - J Occup Organ Psychol Y1 - 2015/06// VL - 88 IS - 2 SP - 251 EP - 272 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0963-1798 SN - 2044-8325 AD - Militello, Laura G., 5335 Far Hills Ave., Suite 217, Dayton, OH, US, 45429 N1 - Accession Number: 2015-15428-001. Other Journal Title: Journal of Occupational Psychology. Partial author list: First Author & Affiliation: Militello, Laura G.; Applied Decision Science, LLC, Dayton, OH, US. Other Publishers: British Psychological Society. Release Date: 20150413. Correction Date: 20150608. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Commissioned Officers; Decision Making; Military Personnel; Rescue Workers. Minor Descriptor: Cognitive Processes; Information Technology. Classification: Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Critical Decision Method; Knowledge Audit. Methodology: Empirical Study; Interview; Quantitative Study. Page Count: 22. Issue Publication Date: Jun, 2015. Publication History: Revised Date: Mar 3, 2015; First Submitted Date: Mar 28, 2014. Copyright Statement: The British Psychological Society. 2015. AB - Naturalistic decision‐making (NDM) research offers important guidance for designing information technology to be used by people who conduct extreme activities in extreme environments, such as military special operators. Recent advances in technology make it possible to deploy information technology in extreme environments (e.g., desert, arctic, high altitude, underwater) to support people who engage in complex and dangerous activities. This practitioner case integrates and operationalizes relevant NDM research including an NDM perspective, methods (cognitive task analysis, staged world exercise, and functional analysis), and frameworks (macrocognition, Laws that Govern Cognitive Work in Action, and Cognitive Performance Indicators) to inform design and identify the potential pitfalls associated with introducing information technology into extreme environments. A project conducted with the United States Air Force pararescue jumpers illustrates the complexity and relevance of NDM research in this challenging design space. Pararescue jumpers are military personnel who specialize in recovering personnel and administering life‐saving medical treatment in a wide variety of operational environments. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - pararescue jumpers KW - military special operators KW - military pararescue KW - cognitive task analysis KW - 2015 KW - Commissioned Officers KW - Decision Making KW - Military Personnel KW - Rescue Workers KW - Cognitive Processes KW - Information Technology KW - 2015 U1 - Sponsor: Air Force Research Laboratory. Grant: FA8650-08-D-6801. Recipients: No recipient indicated DO - 10.1111/joop.12114 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-15428-001&site=ehost-live&scope=site UR - l.militello@applieddecisionscience.com DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Hongyan Sun AU - Vaghjiani, Ghanshyam L. T1 - Ab initio kinetics and thermal decomposition mechanism of mononitrobiuret and 1,5-dinitrobiuret. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2015/05/28/ VL - 142 IS - 20 M3 - Article SP - 1 EP - 14 PB - American Institute of Physics SN - 00219606 AB - Mononitrobiuret (MNB) and 1,5-dinitrobiuret (DNB) are tetrazole-free, nitrogen-rich, energetic compounds. For the first time, a comprehensive ab initio kinetics study on the thermal decomposition mechanisms of MNB and DNB is reported here. In particular, the intramolecular interactions of amine H-atom with electronegative nitro O-atom and carbonyl O-atom have been analyzed for biuret, MNB, and DNB at the M06-2X/aug-cc-pVTZ level of theory. The results show that the MNB and DNB molecules are stabilized through six-member-ring moieties via intramolecular H-bonding with interatomic distances between 1.8 and 2.0 Å, due to electrostatic as well as polarization and dispersion interactions. Furthermore, it was found that the stable molecules in the solid state have the smallest dipole moment amongst all the conformers in the nitrobiuret series of compounds, thus revealing a simple way for evaluating reactivity of fuel conformers. The potential energy surface for thermal decomposition of MNB was characterized by spin restricted coupled cluster theory at the RCCSD(T)/cc-pV∞ Z//M06-2X/aug-cc-pVTZ level. It was found that the thermal decomposition of MNB is initiated by the elimination of HNCO and HNN(O)OH intermediates. Intramolecular transfer of a H-atom, respectively, from the terminal NH2 group to the adjacent carbonyl O-atom via a six-member-ring transition state eliminates HNCO with an energy barrier of 35 kcal/mol and from the central NH group to the adjacent nitro O-atom eliminates HNN(O)OH with an energy barrier of 34 kcal/mol. Elimination of HNN(O)OH is also the primary process involved in the thermal decomposition of DNB, which processes C2v symmetry. The rate coefficients for the primary decomposition channels for MNB and DNB were quantified as functions of temperature and pressure. In addition, the thermal decomposition of HNN(O)OH was analyzed via Rice-Ramsperger-Kassel-Marcus/multiwell master equation simulations, the results of which reveal the formation of (NO2 + H2O) to be the major decomposition path. Furthermore, we provide fundamental interpretations for the experimental results of Klapötke et al. [Combust. Flame 139, 358-366 (2004)] regarding the thermal stability of MNB and DNB, and their decomposition products. Notably, a fundamental understanding of fuel stability, decomposition mechanism, and key reactions leading to ignition is essential in the design and manipulation of molecular systems for the development of new energetic materials for advanced propulsion applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DECOMPOSITION (Chemistry) KW - CHEMICAL kinetics KW - TETRAZOLES KW - INTERMOLECULAR interactions KW - CARBONYL compounds KW - ELECTROSTATICS N1 - Accession Number: 103009745; Hongyan Sun 1; Email Address: hongyan.sun1@gmail.com Vaghjiani, Ghanshyam L. 1; Email Address: ghanshyam.vaghjiani@us.af.mil; Affiliation: 1: Propellants Branch, Rocket Propulsion Division, Aerospace Systems Directorate, Air Force Research Laboratory, AFRL/RQRP, 10 E. Saturn Blvd., Edwards AFB, California 93524, USA; Source Info: 2015, Vol. 142 Issue 20, p1; Subject Term: DECOMPOSITION (Chemistry); Subject Term: CHEMICAL kinetics; Subject Term: TETRAZOLES; Subject Term: INTERMOLECULAR interactions; Subject Term: CARBONYL compounds; Subject Term: ELECTROSTATICS; Number of Pages: 14p; Illustrations: 9 Diagrams, 3 Charts, 6 Graphs; Document Type: Article L3 - 10.1063/1.4921378 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103009745&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Hunton, Donald E. AU - Viggiano, Albert A. T1 - Ambient and Modified Atmospheric Ion Chemistry: From Top to Bottom. JO - Chemical Reviews JF - Chemical Reviews Y1 - 2015/05/27/ VL - 115 IS - 10 M3 - Article SP - 4542 EP - 4570 SN - 00092665 AB - The article focuses on the atmospheric ion chemistry and its effect on environment and air quality. Topics discussed include positive ion composition and chemistry of mesosphere, acid-base chemistry of stratosphere and troposphere and overview of chemistry of exosphere and thermosphere that influence the environment and air quality. KW - ATMOSPHERIC ionization KW - AIR quality -- Environmental aspects KW - MESOSPHERE KW - STRATOSPHERE KW - EXOSPHERE N1 - Accession Number: 108514173; Shuman, Nicholas S. 1 Hunton, Donald E. 1 Viggiano, Albert A. 1; Email Address: afrl.rvborgmailbox@kirtland.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, Albuquerque, New Mexico 87117, United States; Source Info: 5/27/2015, Vol. 115 Issue 10, p4542; Subject Term: ATMOSPHERIC ionization; Subject Term: AIR quality -- Environmental aspects; Subject Term: MESOSPHERE; Subject Term: STRATOSPHERE; Subject Term: EXOSPHERE; Number of Pages: 29p; Document Type: Article L3 - 10.1021/cr5003479 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108514173&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dechao Meng AU - Xiaofang Zhai AU - Chao Ma AU - Haoliang Huang AU - Yu Yun AU - Yan Huang AU - Zhengping Fu AU - Ranran Peng AU - Xiangyu Mao AU - Xiaobing Chen AU - Brown, Gail AU - Yalin Lu T1 - Self-modulated nanostructures in super-large-period Bi11(Fe5CoTi3)10/9O33 epitaxial thin films. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2015/05/25/ VL - 106 IS - 21 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00036951 AB - Super-large-period Aurivillius thin films with a pseudo-period of ten were grown on (0 0 1) SrTiO3 substrates using the pulsed laser deposition method. The as-grown films are found to be coherently strained to the substrate and atomically smooth. X-ray diffraction indicates an average periodicity of ten, while analysis with the high resolution scanning transmission electron microscopy reveals a self-modulated nanostructure in which the periodicity changes as the film thickness increases. Finally, we discuss the magnetic and possible ferroelectric properties of the self-modulated large period Aurivillius films at the room temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BISMUTH iron oxide KW - EPITAXIAL layers KW - STRONTIUM titanate KW - COBALT oxides KW - NANOSTRUCTURED materials -- Analysis KW - TRANSMISSION electron microscopy KW - FERROELECTRIC materials N1 - Accession Number: 102963430; Dechao Meng 1,2 Xiaofang Zhai 1,3,4; Email Address: xfzhai@ustc.edu.cn Chao Ma 1 Haoliang Huang 1,2 Yu Yun 1,2 Yan Huang 1,2 Zhengping Fu 1,2,3 Ranran Peng 1,2,3 Xiangyu Mao 5 Xiaobing Chen 5 Brown, Gail 6 Yalin Lu 1,2,3,7; Email Address: yllu@ustc.edu.cn; Affiliation: 1: Hefei National Laboratory for Physical Sciences, Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China 2: Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China 3: Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China 4: Hefei Physical Sciences and Technology Center, CAS Hefei Institutes of Physical Sciences, Hefei, Anhui 230031, China 5: College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China 6: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 7: Laser Optics Research Center, Department of Physics, United States Air Force Academy, Colorado 80840, USA; Source Info: 5/25/2015, Vol. 106 Issue 21, p1; Subject Term: BISMUTH iron oxide; Subject Term: EPITAXIAL layers; Subject Term: STRONTIUM titanate; Subject Term: COBALT oxides; Subject Term: NANOSTRUCTURED materials -- Analysis; Subject Term: TRANSMISSION electron microscopy; Subject Term: FERROELECTRIC materials; Number of Pages: 5p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.4921966 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102963430&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jensen, Kevin L. AU - Shiftier, Donald A. AU - Rittersdorf, Ian M. AU - Lebowitz, Joel L. AU - Harris, John R. AU - Lau, Y. Y. AU - Petillo, John J. AU - Wilkin Tang AU - Luginsland, John W. T1 - Discrete space charge affected field emission: Flat and hemisphere emitters. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2015/05/21/ VL - 117 IS - 19 M3 - Article SP - 1 EP - 17 PB - American Institute of Physics SN - 00218979 AB - Models of space-charge affected thermal-field emission from protrusions, able to incorporate the effects of both surface roughness and elongated field emitter structures in beam optics codes, are desirable but difficult. The models proposed here treat the meso-scale diode region separate from the micro-scale regions characteristic of the emission sites. The consequences of discrete emission events are given for both one-dimensional (sheets of charge) and three dimensional (rings of charge) models: in the former, results converge to steady state conditions found by theory (e.g., Rokhlenko et al. [J. Appl. Phys. 107, 014904 (2010)]) but show oscillatory structure as they do. Surface roughness or geometric features are handled using a ring of charge model, from which the image charges are found and used to modify the apex field and emitted current. The roughness model is shown to have additional constraints related to the discrete nature of electron charge. The ability of a unit cell model to treat field emitter structures and incorporate surface roughness effects inside a beam optics code is assessed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC field effects KW - FIELD emission KW - FIELD emitter arrays KW - ELECTRON field emission KW - DIODES N1 - Accession Number: 102859597; Jensen, Kevin L. 1; Email Address: kevin.jensen@nrl.navy.mil Shiftier, Donald A. 2 Rittersdorf, Ian M. 3 Lebowitz, Joel L. 4 Harris, John R. 5 Lau, Y. Y. 6 Petillo, John J. 7 Wilkin Tang 2 Luginsland, John W. 8; Affiliation: 1: Code 6854, Naval Research Laboratory, Washington, DC 20375, USA 2: Air Force Research Laboratory, Kirtland AFB, New Mexico 87117, USA 3: Code 6770, Naval Research Laboratory, Washington, DC 20375, USA 4: Department of Mathematics and Department of Physics, Rutgers University, Piscataway, New Jersey 08854-8019, USA 5: U.S. Navy Reserve, New Orleans, Louisiana 70143, USA 6: Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA 7: Leidos, Billerica, Massachusetts 01821, USA 8: Physics and Electronics Directorate, AFOSR, Arlington, Virginia 22203, USA; Source Info: 2015, Vol. 117 Issue 19, p1; Subject Term: ELECTRIC field effects; Subject Term: FIELD emission; Subject Term: FIELD emitter arrays; Subject Term: ELECTRON field emission; Subject Term: DIODES; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 17p; Illustrations: 2 Diagrams, 17 Graphs; Document Type: Article L3 - 10.1063/1.4921186 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102859597&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harris, J. R. AU - Jensen, K. L. AU - Shiffler, D. A. AU - Petillo, J. J. T1 - Shielding in ungated field emitter arrays. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2015/05/18/ VL - 106 IS - 20 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00036951 AB - Cathodes consisting of arrays of high aspect ratio field emitters are of great interest as sources of electron beams for vacuum electronic devices. The desire for high currents and current densities drives the cathode designer towards a denser array, but for ungated emitters, denser arrays also lead to increased shielding, in which the field enhancement factor β of each emitter is reduced due to the presence of the other emitters in the array. To facilitate the study of these arrays, we have developed a method for modeling high aspect ratio emitters using tapered dipole line charges. This method can be used to investigate proximity effects from similar emitters an arbitrary distance away and is much less computationally demanding than competing simulation approaches. Here, we introduce this method and use it to study shielding as a function of array geometry. Emitters with aspect ratios of 10²-104 are modeled, and the shielding-induced reduction in β is considered as a function of tip-to-tip spacing for emitter pairs and for large arrays with triangular and square unit cells. Shielding is found to be negligible when the emitter spacing is greater than the emitter height for the two-emitter array, or about 2.5 times the emitter height in the large arrays, in agreement with previously published results. Because the onset of shielding occurs at virtually the same emitter spacing in the square and triangular arrays, the triangular array is preferred for its higher emitter density at a given emitter spacing. The primary contribution to shielding in large arrays is found to come from emitters within a distance of three times the unit cell spacing for both square and triangular arrays. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIELD emitter arrays KW - CATHODES KW - ELECTRON beams KW - ELECTRONIC apparatus & appliances KW - CURRENT density (Electromagnetism) N1 - Accession Number: 102904846; Harris, J. R. 1 Jensen, K. L. 2 Shiffler, D. A. 3 Petillo, J. J. 4; Affiliation: 1: U.S. Navy Reserve, Navy Operational Support Center New Orleans, New Orleans, Louisiana 70143, USA 2: Code 6854, Naval Research Laboratory, Washington, D.C. 20375, USA 3: Directed Energy Directorate, Air Force Research Laboratory, Albuquerque, New Mexico 87117, USA 4: Leidos, Billerica, Massachusetts 01821, USA; Source Info: 5/18/2015, Vol. 106 Issue 20, p1; Subject Term: FIELD emitter arrays; Subject Term: CATHODES; Subject Term: ELECTRON beams; Subject Term: ELECTRONIC apparatus & appliances; Subject Term: CURRENT density (Electromagnetism); NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; Number of Pages: 4p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.4921709 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102904846&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Franzi, Matthew A. AU - Greening, Geoffrey B. AU - Jordan, Nicholas M. AU - Gilgenbach, Ronald M. AU - Simon, David H. AU - Lau, Y. Y. AU - Hoff, Brad W. AU - Luginsland, John T1 - Microwave Power and Phase Measurements on a Recirculating Planar Magnetron. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2015/05/15/ VL - 43 IS - 5 M3 - Article SP - 1675 EP - 1682 SN - 00933813 AB - Calibrated microwave power and phase measurements are presented for the first recirculating planar magnetron prototype consisting of two coupled six-cavity 1-GHz planar cavity arrays. The results are presented for a solid cathode and two mode-control cathodes (MCCs) with aluminum or velvet electron emitters. The measurements were conducted using a prototype coaxial microwave power extraction scheme. The experimental operating parameters included: pulsed cathode voltages between −250 and −300 kV, voltage pulselengths of 200–600 \mu \texts , axial magnetic fields of 0.1–0.32 T, and entrance currents of 1–10 kA. The results showed improved oscillator frequency locking for the MCCs and increases in power and efficiency using the velvet electron emitter. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVES KW - RESEARCH KW - MAGNETRONS KW - VACUUM KW - ELECTRONS KW - ELECTRIC potential KW - Aluminum KW - Cathodes KW - Cavity magnetron KW - Electromagnetic heating KW - frequency locking KW - high-power microwaves (HPMs) KW - Microwave measurement KW - Microwave oscillators KW - Phase measurement KW - recirculating planar magnetron (RPM) KW - vacuum electronics N1 - Accession Number: 102575853; Franzi, Matthew A. 1 Greening, Geoffrey B. 1 Jordan, Nicholas M. 1 Gilgenbach, Ronald M. 1 Simon, David H. 1 Lau, Y. Y. 1 Hoff, Brad W. 2 Luginsland, John 3; Affiliation: 1: Plasma, Pulsed Power, and Microwave Laboratory, University of Michigan, Ann Arbor, MI, USA 2: Air Force Research Laboratory, Kirtland Air Force Base, Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, NM, USA 3: , Air Force Office of Scientific Research, Arlington, VA, USA; Source Info: Mar2015, Vol. 43 Issue 5, p1675; Subject Term: MICROWAVES; Subject Term: RESEARCH; Subject Term: MAGNETRONS; Subject Term: VACUUM; Subject Term: ELECTRONS; Subject Term: ELECTRIC potential; Author-Supplied Keyword: Aluminum; Author-Supplied Keyword: Cathodes; Author-Supplied Keyword: Cavity magnetron; Author-Supplied Keyword: Electromagnetic heating; Author-Supplied Keyword: frequency locking; Author-Supplied Keyword: high-power microwaves (HPMs); Author-Supplied Keyword: Microwave measurement; Author-Supplied Keyword: Microwave oscillators; Author-Supplied Keyword: Phase measurement; Author-Supplied Keyword: recirculating planar magnetron (RPM); Author-Supplied Keyword: vacuum electronics; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TPS.2015.2417774 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102575853&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lombardi III, J. P. AU - Aga Jr., R. S. AU - Heckman, E. M. AU - Bartsch, C. M. T1 - Characterisation of DNA biopolymer-based UV photodetector fabricated by inkjet printing. JO - Electronics Letters JF - Electronics Letters Y1 - 2015/05/14/ VL - 51 IS - 10 M3 - Article SP - 778 EP - 780 PB - Institution of Engineering & Technology SN - 00135194 AB - The performance of a printable, ultraviolet (UV) photoconducting biopolymer is investigated for UV photodetectors of varying layer thicknesses. The biopolymer is formed from deoxyribonucleic acid (DNA) with the addition of the Clevios P formulation of poly(3,4-ethylenedioxythiophene)- poly(styrenesulphonate) (PEDOT:PSS) and hexadecyltrimethyl- ammonium chloride (CTMA); it is then combined with phenyl-C61-butyric acid methyl (PCBM) to make a printable, UV photoconducting material. The highest measured responsivity of the photodetectors is 1.2 mA/W at 20 V bias using a 260 nm source. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOPOLYMERS KW - PHOTODETECTORS KW - PHOTOMETERS KW - DNA KW - DEOXYRIBONUCLEOTIDES N1 - Accession Number: 102583554; Lombardi III, J. P. 1 Aga Jr., R. S. 2 Heckman, E. M. 2 Bartsch, C. M. 2; Email Address: carrie.bartsch.1@us.af.mil; Affiliation: 1: Department of System Science and Industrial Engineering, Binghamton University, Binghamton, NY, USA 2: Air Force Research Laboratory, Sensors Directorate, WPAFB, OH 45431, USA; Source Info: 5/14/2015, Vol. 51 Issue 10, p778; Subject Term: BIOPOLYMERS; Subject Term: PHOTODETECTORS; Subject Term: PHOTOMETERS; Subject Term: DNA; Subject Term: DEOXYRIBONUCLEOTIDES; NAICS/Industry Codes: 423490 Other Professional Equipment and Supplies Merchant Wholesalers; NAICS/Industry Codes: 417930 Professional machinery, equipment and supplies merchant wholesalers; Number of Pages: 2p; Illustrations: 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1049/el.2015.0577 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102583554&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, Jennifer A. AU - Mirau, Peter A. AU - Chushak, Yaroslav AU - Chávez, Jorge L. AU - Naik, Rajesh R. AU - Hagen, Joshua A. AU - Kelley-Loughnane, Nancy T1 - Single-Round Patterned DNA Library Microarray Aptamer Lead Identification. JO - Journal of Analytical Methods in Chemistry JF - Journal of Analytical Methods in Chemistry Y1 - 2015/05/14/ VL - 2015 M3 - Article SP - 1 EP - 8 PB - Hindawi Publishing Corporation SN - 20908865 AB - A method for identifying an aptamer in a single round was developed using custom DNA microarrays containing computationally derived patterned libraries incorporating no information on the sequences of previously reported thrombin binding aptamers. The DNA library was specifically designed to increase the probability of binding by enhancing structural complexity in a sequence-space confined environment, much like generating lead compounds in a combinatorial drug screening library. The sequence demonstrating the highest fluorescence intensity upon target addition was confirmed to bind the target molecule thrombin with specificity by surface plasmon resonance, and a novel imino proton NMR/2D NOESY combination was used to screen the structure for G-quartet formation. We propose that the lack of G-quartet structure in microarray-derived aptamers may highlight differences in binding mechanisms between surface-immobilized and solution based strategies. This proof-of-principle study highlights the use of a computational driven methodology to create a DNA library rather than a SELEX based approach. This work is beneficial to the biosensor field where aptamers selected by solution based evolution have proven challenging to retain binding function when immobilized on a surface. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Analytical Methods in Chemistry is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DNA microarrays KW - APTAMERS KW - THROMBIN KW - BINDING sites (Biochemistry) KW - SURFACE plasmon resonance N1 - Accession Number: 109225457; Martin, Jennifer A. 1,2; Email Address: jennifer.martin.30.ctr@us.af.mil Mirau, Peter A. 3; Email Address: peter.mirau@us.af.mil Chushak, Yaroslav 1,2; Email Address: yaroslav.chushak.1.ctr@us.af.mil Chávez, Jorge L. 1,4; Email Address: jorge.chavez.ctr.per@us.af.mil Naik, Rajesh R. 3; Email Address: rajesh.naik@us.af.mil Hagen, Joshua A. 1; Email Address: joshua.hagen.1@us.af.mil Kelley-Loughnane, Nancy 1; Email Address: nancy.kelley-loughnane.1@us.af.mil; Affiliation: 1: Human Effectiveness Directorate, 711 Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA 2: The Henry M. Jackson Foundation for the Advancement of Military Medicine, 6720A Rockledge Drive, Bethesda, MD 20817, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 4: UES Inc., 4401 Dayton-Xenia Road, Dayton, Dayton, OH 45433, USA; Source Info: 5/14/2015, Vol. 2015, p1; Subject Term: DNA microarrays; Subject Term: APTAMERS; Subject Term: THROMBIN; Subject Term: BINDING sites (Biochemistry); Subject Term: SURFACE plasmon resonance; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; Number of Pages: 8p; Document Type: Article L3 - 10.1155/2015/137489 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109225457&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Andreas Velten AU - Andreas Schmitt-Sody AU - Jean-Claude Diels AU - Shermineh Rostami AU - Amin Rasoulof AU - Chengyong Feng AU - Ladan Arissian T1 - Videos of light filamentation in air. JO - Journal of Physics: B Atomic Molecular & Optical Physics JF - Journal of Physics: B Atomic Molecular & Optical Physics Y1 - 2015/05/14/ VL - 48 IS - 9 M3 - Article SP - 1 EP - 1 SN - 09534075 AB - Light filaments are of interest for applications in remote sensing, communications, and the control of electronic discharges. Different plasma dynamics and emitted radiation have been observed according to the initial pulse characteristics and beam collimation. To help observing and understanding these observations, a new technique of creating a movie of the moving light pulse and the plasma emission in its wake is presented. Over 1,000 synchronized frames of a streak camera are combined to produce the 4D (2 D space, time in ps and wavelength) movie. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: B Atomic Molecular & Optical Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER pulses KW - PLASMA (Ionized gases) KW - WAVE diffraction KW - EMULSIONS KW - MOLECULAR orientation N1 - Accession Number: 102035541; Andreas Velten 1,2 Andreas Schmitt-Sody 3 Jean-Claude Diels 4; Email Address: jcdiels@unm.edu Shermineh Rostami 4 Amin Rasoulof 4 Chengyong Feng 4 Ladan Arissian 4; Affiliation: 1: Laboratory for Optical and Computational Instrumentation,University of Wisconsin at Madison, USA 2: Morgridge Institute for Research, Madison, WI, USA 3: Air Force Research Laboratory, Kirtland Airforce Base, Albuquerque, NM, USA 4: Center for High Technology Materials, University of New Mexico, Albuquerque, NM, USA; Source Info: 5/14/2015, Vol. 48 Issue 9, p1; Subject Term: LASER pulses; Subject Term: PLASMA (Ionized gases); Subject Term: WAVE diffraction; Subject Term: EMULSIONS; Subject Term: MOLECULAR orientation; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0953-4075/48/9/094020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102035541&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Turgut, Zafer AU - Hiroyuki Kosai AU - Bixel, Tyler AU - Scofield, James AU - Lee Semiatin, S. AU - Horwath, John T1 - Hysteresis loss analysis of soft magnetic materials under direct current bias conditions. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2015/05/07/ VL - 117 IS - 17 M3 - Article SP - 17A508-1 EP - 17A508-4 PB - American Institute of Physics SN - 00218979 AB - Direct current bias related hysteresis loss characteristics of three commercially available magnetic materials: (1) an iron based Metglas tape core, (2) a Sendust powder core, and (3) a Mn-Zn based ferrite in both un-gapped and gapped configurations were studied. The measurements are conducted for a fixed external field Hext, a fixed flux swing (ΔB), and a fixed maximum forward magnetization (Bmax) as a function of the external bias field. In all the measurements, a direct correlation is found between permeability and measured loss values as a function of dc bias field. Increased hysteresis losses are measured in the magnetization rotation region in which classical domain theory predicts minimal losses. The observed trends are discussed within the frame work of classical domain theory. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYSTERESIS KW - MAGNETIC materials KW - MAGNETISM KW - MAGNETIZATION KW - PERMEABILITY N1 - Accession Number: 102606213; Turgut, Zafer 1; Email Address: zafer.turgut.2@us.af.mil Hiroyuki Kosai 1,2 Bixel, Tyler 1,2 Scofield, James 1 Lee Semiatin, S. 1 Horwath, John 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Dayton, Ohio 45433, USA 2: UES, Inc., 4401 Dayton-Xenia Road, Dayton, Ohio 45432, USA; Source Info: 2015, Vol. 117 Issue 17, p17A508-1; Subject Term: HYSTERESIS; Subject Term: MAGNETIC materials; Subject Term: MAGNETISM; Subject Term: MAGNETIZATION; Subject Term: PERMEABILITY; Number of Pages: 4p; Illustrations: 7 Graphs; Document Type: Article L3 - 10.1063/1.4919228 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102606213&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thomas, Brandon J. AU - Harruff-Miller, Barbara A. AU - Bunker, Christopher E. AU - Lewis, William K. T1 - Infrared spectroscopy of Mg-CO2 and Al-CO2 complexes in helium nanodroplets. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2015/05/07/ VL - 142 IS - 17 M3 - Article SP - 1 EP - 10 PB - American Institute of Physics SN - 00219606 AB - The catalytic reduction of CO2 to produce hydrocarbon fuels is a topic that has gained significant attention. Development of efficient catalysts is a key enabler to such approaches, and metal-based catalysts have shown promise towards this goal. The development of a fundamental understanding of the interactions between CO2 molecules and metal atoms is expected to offer insight into the chemistry that occurs at the active site of such catalysts. In the current study, we utilize helium droplet methods to assemble complexes composed of a CO2 molecule and a Mg or Al atom. High-resolution infrared (IR) spectroscopy and optically selected mass spectrometry are used to probe the structure and binding of the complexes, and the experimental observations are compared with theoretical results determined from ab initio calculations. In both the Mg-CO2 and Al-CO2 systems, two IR bands are obtained: one assigned to a linear isomer and the other assigned to a T-shaped isomer. In the case of the Mg-CO2 complexes, the vibrational frequencies and rotational constants associated with the two isomers are in good agreement with theoretical values. In the case of the Al-CO2 complexes, the vibrational frequencies agree with theoretical predictions; however, the bands from both structural isomers exhibit significant homogeneous broadening sufficient to completely obscure the rotational structure of the bands. The broadening is consistent with an upper state lifetime of 2.7 ps for the linear isomer and 1.8 ps for the T-shaped isomer. The short lifetime is tentatively attributed to a prompt photo-induced chemical reaction between the CO2 molecule and the Al atom comprising the complex. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFRARED spectroscopy KW - CATALYTIC reduction KW - CARBON dioxide KW - HELIUM KW - NANOPARTICLES KW - CHEMICAL reactions N1 - Accession Number: 102584536; Thomas, Brandon J. 1 Harruff-Miller, Barbara A. 2 Bunker, Christopher E. 3 Lewis, William K. 3; Email Address: william.lewis.49@us.af.mil; Affiliation: 1: Spectral Energies, LLC, Dayton, Ohio 45431, USA 2: Energy Technology & Materials Division, University of Dayton Research Institute, Dayton, Ohio 45469, USA 3: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: 2015, Vol. 142 Issue 17, p1; Subject Term: INFRARED spectroscopy; Subject Term: CATALYTIC reduction; Subject Term: CARBON dioxide; Subject Term: HELIUM; Subject Term: NANOPARTICLES; Subject Term: CHEMICAL reactions; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 10p; Illustrations: 1 Diagram, 1 Chart, 12 Graphs; Document Type: Article L3 - 10.1063/1.4919693 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102584536&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Akdim, Brahim AU - Pachter, Ruth AU - Naik, Rajesh R. T1 - Self-assembled peptide nanotubes as electronic materials: An evaluation from first-principles calculations. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2015/05/04/ VL - 106 IS - 18 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00036951 AB - In this letter, we report on the evaluation of diphenylalanine (FF), dityrosine (YY), and phenylalaninetryptophan (FW) self-assembled peptide nanotube structures for electronics and photonics applications. Realistic bulk peptide nanotube material models were used in density functional theory calculations to mimic the well-ordered tubular nanostructures. Importantly, validated functionals were applied, specifically by using a London dispersion correction to model intertube interactions and a range-separated hybrid functional for accurate bandgap calculations. Bandgaps were found consistent with available experimental data for FF, and also corroborate the higher conductance reported for FW in comparison to FF peptide nanotubes. Interestingly, the predicted bandgap for the YY tubular nanostructure was found to be slightly higher than that of FW, suggesting higher conductance as well. In addition, the band structure calculations along the high symmetry line of nanotube axis revealed a direct bandgap for FF. The results enhance our understanding of the electronic properties of these material systems and will pave the way into their application in devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOTUBES KW - PEPTIDES KW - MOLECULAR self-assembly KW - ELECTRONIC materials KW - AB-initio calculations KW - PHENYLALANINE KW - TYROSINE KW - TRYPTOPHAN N1 - Accession Number: 102617452; Akdim, Brahim 1,2; Email Address: brahim.akdim.ctr@us.af.mil Pachter, Ruth 1; Email Address: ruth.pachter@us.af.mil Naik, Rajesh R. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: General Dynamics Information Technology, Inc., 500 Springfield Pike, Dayton, Ohio 454331, USA; Source Info: 5/4/2015, Vol. 106 Issue 18, p1; Subject Term: NANOTUBES; Subject Term: PEPTIDES; Subject Term: MOLECULAR self-assembly; Subject Term: ELECTRONIC materials; Subject Term: AB-initio calculations; Subject Term: PHENYLALANINE; Subject Term: TYROSINE; Subject Term: TRYPTOPHAN; Number of Pages: 4p; Illustrations: 1 Diagram, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.4921012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102617452&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Leve, Frederick A. T1 - Scaled control moment gyroscope dynamics effects on performance. JO - Acta Astronautica JF - Acta Astronautica Y1 - 2015/05// VL - 110 M3 - Article SP - 77 EP - 88 SN - 00945765 AB - The majority of the literature that discusses the dynamics of control moment gyroscopes (CMG) contains formulations that are not derived from first principles and make simplifying assumptions early in the derivation, possibly neglecting important contributions. For small satellites, additional dynamics that are no longer negligible are shown to cause an increase in torque error and loss of torque amplification. The goal of the analysis presented here is to provide the reader with a complete and general analytical derivation of the equations for dynamics of a spacecraft with n -CMG and to discuss the performance degradation imposed to CMG actuators when scaling them for small satellites. The paper first derives the equations of motion from first principles for a very general case of a spacecraft with n -CMG. Each contribution of the dynamics is described with its effect on the performance of CMG and its significance on scaled CMG performance is addressed. It is shown analytically and verified numerically, that CMG do not scale properly with performance and care must be taken in their design to trade performance, size, mass, and power when reducing their scale. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Astronautica is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GYROSCOPES KW - ARTIFICIAL satellites -- Attitude control systems KW - ERROR analysis (Mathematics) KW - TORQUE control KW - SPACE vehicles KW - Analytical dynamics KW - Control moment gyro KW - Performance criteria KW - Scaled attitude control system KW - Smallsat N1 - Accession Number: 102054341; Leve, Frederick A. 1; Email Address: AFRL.RVSV@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117, United States; Source Info: May2015, Vol. 110, p77; Subject Term: GYROSCOPES; Subject Term: ARTIFICIAL satellites -- Attitude control systems; Subject Term: ERROR analysis (Mathematics); Subject Term: TORQUE control; Subject Term: SPACE vehicles; Author-Supplied Keyword: Analytical dynamics; Author-Supplied Keyword: Control moment gyro; Author-Supplied Keyword: Performance criteria; Author-Supplied Keyword: Scaled attitude control system; Author-Supplied Keyword: Smallsat; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.actaastro.2015.01.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102054341&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sinclair, Andrew J. AU - Sherrill, Ryan E. AU - Lovell, T. Alan T1 - Geometric interpretation of the Tschauner–Hempel solutions for satellite relative motion. JO - Advances in Space Research JF - Advances in Space Research Y1 - 2015/05// VL - 55 IS - 9 M3 - Article SP - 2268 EP - 2279 SN - 02731177 AB - The fundamental solutions of the Tschauner–Hempel equations, which describe the motion of a deputy satellite relative to a chief satellite with arbitrary eccentricity, are interpreted geometrically as generalizations of the drifting two-by-one ellipse that describes relative motion in circular orbits. General solutions are formed by taking linear combinations of these fundamental solutions. The amplitudes of these fundamental solutions are proposed as a parameterization of relative motion in elliptic orbits. A simple maneuver scheme is also developed to achieve arbitrary desired changes in the fundamental-solution amplitudes. [ABSTRACT FROM AUTHOR] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARTIFICIAL satellites KW - RELATIVE motion KW - ORBITS of artificial satellites KW - ELLIPTICAL orbits KW - LINEAR models (Statistics) KW - GENERALIZATION KW - Elliptic orbits KW - Relative motion KW - Satellite formation flying N1 - Accession Number: 101930986; Sinclair, Andrew J. 1; Email Address: sinclair@auburn.edu Sherrill, Ryan E. 1 Lovell, T. Alan 2; Affiliation: 1: Aerospace Engineering Department, Auburn University, 211 Davis Hall, Auburn, AL 36849, United States 2: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117, United States; Source Info: May2015, Vol. 55 Issue 9, p2268; Subject Term: ARTIFICIAL satellites; Subject Term: RELATIVE motion; Subject Term: ORBITS of artificial satellites; Subject Term: ELLIPTICAL orbits; Subject Term: LINEAR models (Statistics); Subject Term: GENERALIZATION; Author-Supplied Keyword: Elliptic orbits; Author-Supplied Keyword: Relative motion; Author-Supplied Keyword: Satellite formation flying; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.asr.2015.01.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101930986&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wells, Mark K. T1 - Tribal Warfare. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2015/05//May/Jun2015 VL - 29 IS - 3 M3 - Opinion SP - 82 EP - 87 PB - Superintendent of Documents SN - 1555385X AB - The author discusses aspects of the relationship of Native American intertribal warfare across the U.S. He examines the establishment of the national defense through the modern air forces with the members of individual tribes. The author highlights the hierarchical organization of any military member ranks as well as the outcomes of the conflict among the American Indian tribes. KW - NATIVE Americans KW - MILITARY art & science KW - TRIBAL government KW - TRIBES KW - ORGANIZATIONAL structure KW - SOCIETIES, etc. KW - SOCIAL aspects N1 - Accession Number: 103682393; Wells, Mark K. 1; Affiliation: 1: Permanent Professor and head of the Department of History, United States Air Force Academy, Colorado; Source Info: May/Jun2015, Vol. 29 Issue 3, p82; Subject Term: NATIVE Americans; Subject Term: MILITARY art & science; Subject Term: TRIBAL government; Subject Term: TRIBES; Subject Term: ORGANIZATIONAL structure; Subject Term: SOCIETIES, etc.; Subject Term: SOCIAL aspects; Number of Pages: 6p; Document Type: Opinion UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103682393&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harrison, Roger Gran T1 - Cool Hand Brent. JO - American Interest JF - American Interest Y1 - 2015/05//May/Jun2015 VL - 10 IS - 5 M3 - Book Review SP - 88 EP - 92 SN - 15565777 KW - NATIONAL security KW - NONFICTION KW - SPARROW, Bartholomew KW - STRATEGIST: Brent Scowcroft & the Call of National Security, The (Book) N1 - Accession Number: 102256911; Harrison, Roger Gran 1; Affiliation: 1: United States Air Force Academy; Source Info: May/Jun2015, Vol. 10 Issue 5, p88; Subject Term: NATIONAL security; Subject Term: NONFICTION; Reviews & Products: STRATEGIST: Brent Scowcroft & the Call of National Security, The (Book); NAICS/Industry Codes: 928110 National Security; People: SPARROW, Bartholomew; Number of Pages: 5p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102256911&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ma, Lin AU - Lei, Qingchun AU - Wu, Yue AU - Ombrello, Timothy AU - Carter, Campbell T1 - 3D measurements of ignition processes at 20 kHz in a supersonic combustor. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2015/05// VL - 119 IS - 2 M3 - Article SP - 313 EP - 318 PB - Springer Science & Business Media B.V. SN - 09462171 AB - The ignition dynamics in a Mach 2 combustor were investigated using a three-dimensional (3D) diagnostic with 20 kHz temporal resolution. The diagnostic was based on a combination of tomographic chemiluminescence and fiber-based endoscopes (FBEs). Customized FBEs were employed to capture line-of-sight integrated chemiluminescence images (termed projections) of the combustor from eight different orientations simultaneously at 20 kHz. The measured projections were then used in a tomographic algorithm to obtain 3D reconstruction of the sparks, ignition kernel, and stable flame. Processing the reconstructions frame by frame resulted in 4D measurements. Key properties were then extracted to quantify the ignition processes, including 3D volume, surface area, sphericity, and velocity of the ignition kernel. The data collected in this work revealed detailed spatiotemporal dynamics of the ignition kernel, which are not obtainable with planar diagnostics, such as its growth, movement, and development into 'stable' combustion. This work also illustrates the potential for obtaining quantitative 3D measurements using tomographic techniques and the practical utility of FBEs. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCRAMJET engines KW - ENDOSCOPES KW - TOMOGRAPHY KW - CHEMILUMINESCENCE KW - SPATIOTEMPORAL processes N1 - Accession Number: 102273147; Ma, Lin; Email Address: linma@vt.edu Lei, Qingchun 1 Wu, Yue 2 Ombrello, Timothy 3 Carter, Campbell 3; Affiliation: 1: Department of Mechanical Engineering, Virginia Tech, Blacksburg 24060 USA 2: Department of Aerospace and Ocean Engineering, Virginia Tech, Blacksburg 24060 USA 3: Air Force Research Laboratory, Dayton 45433 USA; Source Info: May2015, Vol. 119 Issue 2, p313; Subject Term: SCRAMJET engines; Subject Term: ENDOSCOPES; Subject Term: TOMOGRAPHY; Subject Term: CHEMILUMINESCENCE; Subject Term: SPATIOTEMPORAL processes; Number of Pages: 6p; Illustrations: 1 Color Photograph, 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1007/s00340-015-6066-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102273147&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cao, Yongcan T1 - UAV circumnavigating an unknown target under a GPS-denied environment with range-only measurements. JO - Automatica JF - Automatica Y1 - 2015/05// VL - 55 M3 - Article SP - 150 EP - 158 SN - 00051098 AB - One typical application of unmanned aerial vehicles (UAVs) is the intelligence, surveillance, and reconnaissance mission, where the objective is to improve situation awareness through information acquisition. For example, an efficient way to gather information regarding a target is to deploy UAV in such a way that it orbits around this target at a desired distance. Such a UAV motion is called circumnavigation . The objective of this paper is to design a control algorithm such that this circumnavigation mission is achieved under a GPS-denied environment when only range measurement is used. The control algorithm is constructed in two steps. The first step is to design a control algorithm by assuming the availability of both range and range rate measurements, where the associated control input is always bounded. The second step is to further eliminate the use of range rate measurement by using an estimated range rate, obtained via a sliding-mode estimator based on range measurement, to replace actual range rate measurement. Such a controller design technique is applicable in other UAV navigation and control missions when a GPS-denied environment is considered. [ABSTRACT FROM AUTHOR] AB - Copyright of Automatica is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DRONE aircraft KW - GLOBAL Positioning System KW - RANGE management KW - RECONNAISSANCE operations KW - VOYAGES around the world KW - SLIDING mode control KW - Autonomy KW - GPS-denied environment KW - Joint estimation and control KW - Sliding-mode estimator KW - UAV N1 - Accession Number: 102190103; Cao, Yongcan 1; Email Address: yongcan.cao@gmail.com; Affiliation: 1: Control Science Center of Excellence, Air Force Research Laboratory, United States; Source Info: May2015, Vol. 55, p150; Subject Term: DRONE aircraft; Subject Term: GLOBAL Positioning System; Subject Term: RANGE management; Subject Term: RECONNAISSANCE operations; Subject Term: VOYAGES around the world; Subject Term: SLIDING mode control; Author-Supplied Keyword: Autonomy; Author-Supplied Keyword: GPS-denied environment; Author-Supplied Keyword: Joint estimation and control; Author-Supplied Keyword: Sliding-mode estimator; Author-Supplied Keyword: UAV; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.automatica.2015.03.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102190103&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sonner, Z. AU - Wilder, E. AU - Heikenfeld, J. AU - Kasting, G. AU - Beyette, F. AU - Swaile, D. AU - Sherman, F. AU - Joyce, J. AU - Hagen, J. AU - Kelley-Loughnane, N. AU - Naik, R. T1 - The microfluidics of the eccrine sweat gland, including biomarker partitioning, transport, and biosensing implications. JO - Biomicrofluidics JF - Biomicrofluidics Y1 - 2015/05// VL - 9 IS - 3 M3 - Article SP - 1 EP - 19 PB - American Institute of Physics SN - 19321058 AB - Non-invasive and accurate access of biomarkers remains a holy grail of the biomedical community. Human eccrine sweat is a surprisingly biomarker-rich fluid which is gaining increasing attention. This is especially true in applications of continuous bio-monitoring where other biofluids prove more challenging, if not impossible. However, much confusion on the topic exists as the microfluidics of the eccrine sweat gland has never been comprehensively presented and models of biomarker partitioning into sweat are either underdeveloped and/or highly scattered across literature. Reported here are microfluidic models for eccrine sweat generation and flow which are coupled with review of blood-to-sweat biomarker partition pathways, therefore providing insights such as how biomarker concentration changes with sweat flow rate. Additionally, it is shown that both flow rate and biomarker diffusion determine the effective sampling rate of biomarkers at the skin surface (chronological resolution). The discussion covers a broad class of biomarkers including ions (Na+, Cl-, K+, NH4+), small molecules (ethanol, cortisol, urea, and lactate), and even peptides or small proteins (neuropeptides and cytokines). The models are not meant to be exhaustive for all biomarkers, yet collectively serve as a foundational guide for further development of sweat-based diagnostics and for those beginning exploration of new biomarker opportunities in sweat. [ABSTRACT FROM AUTHOR] AB - Copyright of Biomicrofluidics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROFLUIDICS KW - SWEAT glands KW - PHYSIOLOGY KW - BIOCHEMICAL markers KW - BIOLOGICAL monitoring KW - NEUROPEPTIDES N1 - Accession Number: 103617002; Sonner, Z. 1 Wilder, E. 2 Heikenfeld, J. 1; Email Address: heikenjc@ucmail.uc.edu Kasting, G. 2 Beyette, F. 1 Swaile, D. 3 Sherman, F. 4 Joyce, J. 4 Hagen, J. 5 Kelley-Loughnane, N. 5 Naik, R. 6; Affiliation: 1: Department of Electrical Engineering and Computer Systems, University of Cincinnati, Cincinnati, Ohio 45221, USA 2: Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio 45267, USA 3: P&G Sharon Woods Innovation Center, Cincinnati, Ohio 45241, USA 4: P&G Beckett Ridge Technical Center, West Chester, Ohio 45069, USA 5: 711 Human Performance Wing, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45233, USA 6: Functional Materials Division, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45233, USA; Source Info: 2015, Vol. 9 Issue 3, p1; Subject Term: MICROFLUIDICS; Subject Term: SWEAT glands; Subject Term: PHYSIOLOGY; Subject Term: BIOCHEMICAL markers; Subject Term: BIOLOGICAL monitoring; Subject Term: NEUROPEPTIDES; Number of Pages: 19p; Document Type: Article L3 - 10.1063/1.4921039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103617002&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chang, Jo-Shu AU - Yang, Ji-Won AU - Lee, Duu-Jong AU - Hallenbeck, Patrick C. T1 - Editorial. JO - Bioresource Technology JF - Bioresource Technology Y1 - 2015/05// VL - 183 M3 - Article SP - 1 EP - 1 SN - 09608524 KW - RESEARCH KW - Editorial boards (Publishing) KW - Natural resources KW - Periodical publishing KW - Periodicals -- Articles KW - Publishers & publishing KW - Articles (Published materials) KW - Publications N1 - Accession Number: 101925513; Chang, Jo-Shu 1,2,3,4,5; Email Address: changjs@mail.ncku.edu.tw; Yang, Ji-Won 1,2,3,4,5; Email Address: jwyang@kaist.ac.kr; Lee, Duu-Jong 1,2,3,4,5; Email Address: djlee@ntu.edu.tw; Hallenbeck, Patrick C. 1,2,3,4,5; Email Address: Patrick.hallenbeck.ctr@usafa.edu; Affiliations: 1: Department of Chemical Engineering, National Cheng Kung University, 1 University Road, Tainan 70100, Taiwan; 2: Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea; 3: Department of Chemical Engineering, National Taiwan University, No. 1 Sec. 4 Roosevelt Road, Taipei 10617, Taiwan; 4: Department of Microbiology, Infectiology, and Immunology, University of Montreal, C.P. 6128, Succursale Centre-ville, Montreal, Quebec H3C 3J7, Canada; 5: Life Sciences Research Center, Department of Biology, United States Air Force Academy, 2355 Faculty Drive, USAF Academy, CO 80840, United States; Issue Info: May2015, Vol. 183, p1; Thesaurus Term: RESEARCH; Subject Term: Editorial boards (Publishing); Subject Term: Natural resources; Subject Term: Periodical publishing; Subject Term: Periodicals -- Articles; Subject Term: Publishers & publishing; Subject Term: Articles (Published materials); Subject Term: Publications; NAICS/Industry Codes: 511120 Periodical Publishers; NAICS/Industry Codes: 511130 Book Publishers; NAICS/Industry Codes: 511190 Other publishers; NAICS/Industry Codes: 511199 All Other Publishers; Number of Pages: 1p; Document Type: Article L3 - 10.1016/j.biortech.2015.03.027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=101925513&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hallenbeck, Patrick C. AU - Grogger, Melanie AU - Mraz, Megan AU - Veverka, Donald T1 - Building a better Mousetrap I: Using Design of Experiments with unconfounded ions to discover superior media for growth and lipid production by Chlorella sp. EN1234. JO - Bioresource Technology JF - Bioresource Technology Y1 - 2015/05// VL - 183 M3 - Article SP - 82 EP - 89 SN - 09608524 AB - An unconfounded Scheffe Mix approach was used to probe important ions and their interactions in supporting biomass and lipid production by Chlorella sp. EN1234. Six major cations and anions; NH 4 + , NO 3 − , Na + , K + PO 4 − and Cl − were examined. Piepel plots and RSM analysis showed that in a number of cases, the major media anions PO 4 − and Cl − negatively influence final cell densities, and that maximal cell density is obtained with nitrate over ammonium, with an optimal effect when mixed with equal molar potassium. As well, although it is commonly assumed that lipid content increases in nitrogen deficient media, here little correlation between nitrogen content and total lipid content was found with mixtures that supported high lipid productivity. Thus these mixtures define the composition space within which further R&D might produce the best trade-off between total biomass production and high cellular lipid content. [ABSTRACT FROM AUTHOR] AB - Copyright of Bioresource Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Biomass production KW - PHYSIOLOGY KW - Mousetraps KW - Animal traps -- Design & construction KW - Lipids -- Analysis KW - Chlorella KW - Ions -- Analysis KW - Algae KW - Biofuels KW - Lipid production KW - Medium optimization KW - Unconfounded ion matrix N1 - Accession Number: 101925526; Hallenbeck, Patrick C. 1; Email Address: Patrick.hallenbeck@umontreal.ca; Grogger, Melanie 1; Mraz, Megan 1; Veverka, Donald 1; Affiliations: 1: Life Sciences Research Center, Department of Biology, United States Air Force Academy, 2355 Faculty Drive, USAF Academy, CO 80840, United States; Issue Info: May2015, Vol. 183, p82; Thesaurus Term: Biomass production; Thesaurus Term: PHYSIOLOGY; Subject Term: Mousetraps; Subject Term: Animal traps -- Design & construction; Subject Term: Lipids -- Analysis; Subject Term: Chlorella; Subject Term: Ions -- Analysis; Author-Supplied Keyword: Algae; Author-Supplied Keyword: Biofuels; Author-Supplied Keyword: Lipid production; Author-Supplied Keyword: Medium optimization; Author-Supplied Keyword: Unconfounded ion matrix; NAICS/Industry Codes: 221117 Biomass Electric Power Generation; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.biortech.2014.10.144 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=101925526&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hallenbeck, Patrick C. AU - Grogger, Melanie AU - Mraz, Megan AU - Veverka, Donald T1 - Building a better mousetrap II: Using Design of Experiments with unconfounded ions to compare the growth of different microalgae. JO - Bioresource Technology JF - Bioresource Technology Y1 - 2015/05// VL - 183 M3 - Article SP - 90 EP - 99 SN - 09608524 AB - A large number of unconfounded media variations were used with a Scheffe Mix Model to examine in an unambiguous fashion the effects of variations in six important ions; NH 4 + , NO 3 − , Na + , K + , PO 4 − , and Cl − , on the growth of Chlorella vulgaris . This allows several novel observations on media components, for example, the inhibitory effects of chloride, to be made. Using a side by side comparison, it is shown that two strains of Chlorella show significant physiological and functional differences brought out by this approach. Testing selected formulations with a diverse set of algae demonstrated different effects on both growth and cellular lipid content, in some cases driving significant lipid production. This suggests that future work using a larger portion of media composition space could lead to the development of novel media supporting maximal biomass production and lipid production. [ABSTRACT FROM AUTHOR] AB - Copyright of Bioresource Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSIOLOGY KW - Mousetraps KW - Animal traps -- Design & construction KW - Microalgae KW - Algal growth KW - Ions -- Analysis KW - Chlorella KW - Algae KW - Biofuels KW - Medium optimization unconfounded ions KW - Response surface methodology KW - Scheffe Mix Model N1 - Accession Number: 101925602; Hallenbeck, Patrick C. 1; Email Address: Patrick.hallenbeck@umontreal.ca; Grogger, Melanie 1; Mraz, Megan 1; Veverka, Donald 1; Affiliations: 1: Life Sciences Research Center, Department of Biology, United States Air Force Academy, 2355 Faculty Drive, USAF Academy, CO 80840, United States; Issue Info: May2015, Vol. 183, p90; Thesaurus Term: PHYSIOLOGY; Subject Term: Mousetraps; Subject Term: Animal traps -- Design & construction; Subject Term: Microalgae; Subject Term: Algal growth; Subject Term: Ions -- Analysis; Subject Term: Chlorella; Author-Supplied Keyword: Algae; Author-Supplied Keyword: Biofuels; Author-Supplied Keyword: Medium optimization unconfounded ions; Author-Supplied Keyword: Response surface methodology; Author-Supplied Keyword: Scheffe Mix Model; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.biortech.2014.11.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=101925602&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hallenbeck, Patrick C. AU - Grogger, Melanie AU - Mraz, Megan AU - Veverka, Donald T1 - The use of Design of Experiments and Response Surface Methodology to optimize biomass and lipid production by the oleaginous marine green alga, Nannochloropsis gaditana in response to light intensity, inoculum size and CO2. JO - Bioresource Technology JF - Bioresource Technology Y1 - 2015/05// VL - 183 M3 - Article SP - 161 EP - 168 SN - 09608524 AB - Biodiesel produced from microalgal lipids is being considered as a potential source of renewable energy. However, a number of hurdles will have to be overcome if such a process is to become practical. One important factor is the volumetric production of biomass and lipid that can be achieved. The marine alga Nannochloropsis gaditana is under study since it is known to be highly oleaginous and has a number of other attractive properties. Factors that might be important in biomass and lipid production by this alga are light intensity, inoculum size and CO 2 . Here we have carried out for the first time a RSM–DOE study of the influence of these important culture variables and define conditions that maximize biomass production, lipid content (BODIPY® fluorescence) and total lipid production. Moreover, flow cytometry allowed the examination on a cellular level of changes that occur in cellular populations as they age and accumulate lipids. [ABSTRACT FROM AUTHOR] AB - Copyright of Bioresource Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Biomass production KW - PHYSIOLOGY KW - Carbon dioxide KW - Response surfaces (Statistics) KW - Lipids -- Analysis KW - Green algae KW - Light intensity KW - Algae KW - Biofuels KW - Lipid production KW - Medium optimization KW - Response Surface Methodology N1 - Accession Number: 101925586; Hallenbeck, Patrick C. 1; Email Address: patrick.hallenbeck.ctr@usafa.edu; Grogger, Melanie 1; Mraz, Megan 1; Veverka, Donald 1; Affiliations: 1: Life Sciences Research Center, Department of Biology, United States Air Force Academy, 2355 Faculty Drive, USAF Academy, CO 80840, United States; Issue Info: May2015, Vol. 183, p161; Thesaurus Term: Biomass production; Thesaurus Term: PHYSIOLOGY; Thesaurus Term: Carbon dioxide; Subject Term: Response surfaces (Statistics); Subject Term: Lipids -- Analysis; Subject Term: Green algae; Subject Term: Light intensity; Author-Supplied Keyword: Algae; Author-Supplied Keyword: Biofuels; Author-Supplied Keyword: Lipid production; Author-Supplied Keyword: Medium optimization; Author-Supplied Keyword: Response Surface Methodology; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 221117 Biomass Electric Power Generation; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.biortech.2014.09.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=101925586&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Chandra, Yenny AU - Zhou, Yang AU - Stanciulescu, Ilinca AU - Eason, Thomas AU - Spottswood, Stephen T1 - A robust composite time integration scheme for snap-through problems. JO - Computational Mechanics JF - Computational Mechanics Y1 - 2015/05// VL - 55 IS - 5 M3 - Article SP - 1041 EP - 1056 PB - Springer Science & Business Media B.V. SN - 01787675 AB - A robust time integration scheme for snap-through buckling of shallow arches is proposed. The algorithm is a composite method that consists of three sub-steps. Numerical damping is introduced to the system by employing an algorithm similar to the backward differentiation formulas method in the last sub-step. Optimal algorithmic parameters are established based on stability criteria and minimization of numerical damping. The proposed method is accurate, numerically stable, and efficient as demonstrated through several examples involving loss of stability, large deformation, large displacements and large rotations. [ABSTRACT FROM AUTHOR] AB - Copyright of Computational Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ROBUST control KW - PROBLEM solving KW - NONLINEAR dynamical systems KW - BUCKLING (Mechanics) KW - MATERIALS -- Mechanical properties KW - Backward differentiation formula KW - Nonlinear dynamics KW - Snap-through KW - Time integration N1 - Accession Number: 108394086; Chandra, Yenny 1 Zhou, Yang 1 Stanciulescu, Ilinca 1; Email Address: ilinca.s@rice.edu Eason, Thomas 2 Spottswood, Stephen 2; Affiliation: 1: Department of Civil and Environmental Engineering, Rice University, Houston 77005 USA 2: Air Force Research Laboratory, Structural Sciences Center, 2790 D. Street WPAFB USA; Source Info: May2015, Vol. 55 Issue 5, p1041; Subject Term: ROBUST control; Subject Term: PROBLEM solving; Subject Term: NONLINEAR dynamical systems; Subject Term: BUCKLING (Mechanics); Subject Term: MATERIALS -- Mechanical properties; Author-Supplied Keyword: Backward differentiation formula; Author-Supplied Keyword: Nonlinear dynamics; Author-Supplied Keyword: Snap-through; Author-Supplied Keyword: Time integration; Number of Pages: 16p; Document Type: Article L3 - 10.1007/s00466-015-1152-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108394086&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, Hao AU - Liu, Lingjia AU - Matyjas, John D. AU - Medley, Michael J. T1 - Optimal resource allocation for sensing-based spectrum sharing D2D networks. JO - Computers & Electrical Engineering JF - Computers & Electrical Engineering Y1 - 2015/05// VL - 44 M3 - Article SP - 107 EP - 121 SN - 00457906 AB - To improve the spectral efficiency of a cellular network, sensing based spectrum sharing device-to-device (sensing-based D2D) technique is introduced in this paper. To be specific, efficient algorithms are introduced to find the optimal sensing time and power allocation for single-subband sensing-based D2D systems under cellular link’s rate loss constraint. For multi-subband systems, D2D users may have limited sensing capability where only a part of the subbands can be sensed. Accordingly, a partially observable Markov decision process (POMDP) model is introduced and an efficient algorithm is introduced to address the resource allocation problem. Simulation results suggest that sensing-based D2D outperforms overlay D2D when the transmitter of D2D link is far away from the receiver of cellular link in the single-subband single-subcarrier case. In the single-subband multi-subcarrier case, sensing-based D2D can achieve 15.2% increase in spectral-efficiency over overlay D2D. In the multi-subband case, when D2D users have limited sensing capability, our proposed Separate Principle method can further improve D2D link’s spectral-efficiency by 5 % ∼ 15 % compared to the Greedy algorithm. [ABSTRACT FROM AUTHOR] AB - Copyright of Computers & Electrical Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MARKOV processes KW - RESOURCE allocation KW - TRANSMITTERS (Communication) KW - GREEDY algorithms KW - SIMULATION methods & models KW - Partially observable Markov decision process KW - Power allocation KW - Sensing based spectrum sharing D2D KW - Spectrum sensing N1 - Accession Number: 103238174; Chen, Hao 1 Liu, Lingjia 1; Email Address: lingjialiu@ittc.ku.edu Matyjas, John D. 2 Medley, Michael J. 2; Affiliation: 1: Department of Electrical Engineering and Computer Science, University of Kansas, Lawrence, KS 66044, USA 2: Information Directorate, Air Force Research Laboratory, Rome, NY 13441, USA; Source Info: May2015, Vol. 44, p107; Subject Term: MARKOV processes; Subject Term: RESOURCE allocation; Subject Term: TRANSMITTERS (Communication); Subject Term: GREEDY algorithms; Subject Term: SIMULATION methods & models; Author-Supplied Keyword: Partially observable Markov decision process; Author-Supplied Keyword: Power allocation; Author-Supplied Keyword: Sensing based spectrum sharing D2D; Author-Supplied Keyword: Spectrum sensing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.compeleceng.2014.12.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103238174&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reichenstein, William AU - Horan, Stephen M. AU - Jennings, William W. AD - Baylor U and Retiree Inc AD - CFA Institute, Charlottesville AD - US Air Force Academy, Colorado Springs T1 - Two Key Concepts for Wealth Management and Beyond (2012): Erratum JO - Financial Analysts Journal JF - Financial Analysts Journal Y1 - 2015/05//May-June 2015 VL - 71 IS - 3 SP - 7 EP - 7 SN - 0015198X N1 - Accession Number: 1528732; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 201511 KW - Household Saving; Personal Finance D14 KW - Portfolio Choice; Investment Decisions G11 KW - Pension Funds; Non-bank Financial Institutions; Financial Instruments; Institutional Investors G23 KW - Personal Income and Other Nonbusiness Taxes and Subsidies; includes inheritance and gift taxes H24 KW - Retirement; Retirement Policies J26 L3 - http://www.cfapubs.org/loi/faj UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1528732&site=ehost-live&scope=site UR - http://www.cfapubs.org/loi/faj DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Haugan, H.J. AU - Brown, G.J. AU - Mahalingam, K. AU - Grazulis, L. T1 - Growth optimization studies to develop InAs/GaInSb superlattice materials for very long wavelength infrared detection. JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2015/05// VL - 70 M3 - Article SP - 99 EP - 102 SN - 13504495 AB - In order to develop ternary antimonide-based superlattice (SL) materials for very long wavelength infrared (VLWIR) detection, systematic growth optimization studies were performed to produce high quality ternary materials. For the studies, a SL structure of 47.0 Å InAs/21.5 Å Ga 0.75 In 0.25 Sb was selected to create a very narrow band gap. Results indicate that an epitaxial process developed can produce a precisely controlled band gap around 50 meV, but the material quality of grown SL layers is particularly sensitive to growth defects formed during the growth process. Since Group III antisites and strain-induced dislocations are the dominant structural defects responsible for the low radiative efficiencies, our optimization strategies to eliminate these defects have focused on stabilizing III/V incorporation during surface reconstruction by manipulating the growth surface temperature and balancing the residual strain of the SLs by adjusting the As/Sb flux ratio. The optimized ternary SL materials exhibited an overall strong photoresponse over a wide wavelength range up to ∼15 μm that is important for developing VLWIR detectors. A quantitative analysis of the lattice strain, performed at the atomic scale by aberration corrected transmission electron microscopy, provided valuable information about the strain distribution at the interfaces that was important for optimizing the strain balancing process during SL layer growth. [ABSTRACT FROM AUTHOR] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - WAVELENGTHS KW - INFRARED detectors KW - ANTIMONIDES KW - EPITAXY KW - TEMPERATURE effect KW - Antimonides KW - Infrared detector KW - Molecular beam epitaxy KW - Superlattices N1 - Accession Number: 103136000; Haugan, H.J. 1 Brown, G.J. 1 Mahalingam, K. 1 Grazulis, L. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: May2015, Vol. 70, p99; Subject Term: SUPERLATTICES; Subject Term: WAVELENGTHS; Subject Term: INFRARED detectors; Subject Term: ANTIMONIDES; Subject Term: EPITAXY; Subject Term: TEMPERATURE effect; Author-Supplied Keyword: Antimonides; Author-Supplied Keyword: Infrared detector; Author-Supplied Keyword: Molecular beam epitaxy; Author-Supplied Keyword: Superlattices; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.infrared.2014.09.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103136000&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Novotny, Steven AU - To, Dominic T1 - Characterization of a high-purity germanium (HPGe) detector through Monte Carlo simulation and nonlinear least squares estimation. JO - Journal of Radioanalytical & Nuclear Chemistry JF - Journal of Radioanalytical & Nuclear Chemistry Y1 - 2015/05// VL - 304 IS - 2 M3 - Article SP - 751 EP - 761 SN - 02365731 AB - In this paper, we describe a method for determining the full-energy peak efficiency of a high-purity germanium detector using Monte Carlo MCNP simulation with the detector model refined through nonlinear least-squares optimization using experimental measurements. The approach allows for an accurate determination of efficiency curves in the absence of an accurate characterization of the detector by the manufacturer, usually a prerequisite for reliable Monte Carlo simulations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Radioanalytical & Nuclear Chemistry is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GERMANIUM radiation detectors KW - MONTE Carlo method KW - NONLINEAR theories KW - LEAST squares KW - NUCLEAR physics -- Experiments KW - High-purity germanium detector KW - Monte Carlo simulation KW - Nonlinear least squares estimation N1 - Accession Number: 101762030; Novotny, Steven 1; Email Address: steven.novotny@usafa.edu To, Dominic 2; Affiliation: 1: Department of Physics, US Air Force Academy, 2354 Fairchild Dr. Colorado Springs 80840 USA 2: OLGT AFTAC and CMAFS, 1 Norad Rd. Colorado Springs 80914 USA; Source Info: May2015, Vol. 304 Issue 2, p751; Subject Term: GERMANIUM radiation detectors; Subject Term: MONTE Carlo method; Subject Term: NONLINEAR theories; Subject Term: LEAST squares; Subject Term: NUCLEAR physics -- Experiments; Author-Supplied Keyword: High-purity germanium detector; Author-Supplied Keyword: Monte Carlo simulation; Author-Supplied Keyword: Nonlinear least squares estimation; Number of Pages: 11p; Illustrations: 5 Charts, 4 Graphs; Document Type: Article L3 - 10.1007/s10967-014-3902-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101762030&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanfield, Scott A. AU - Kimmel, Roger L. AU - Adamczak, David AU - Juliano, Thomas J. T1 - Boundary-Layer Transition Experiment During Reentry of HIFiRE-1. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2015/05//May/Jun2015 VL - 52 IS - 3 M3 - Article SP - 637 EP - 649 SN - 00224650 AB - The Hypersonic International Flight Research Experimentation program is a hypersonic flight test program. It successfully measured the three-dimensional transition front on a cone at angle of attack in hypersonic flight during its reentry. The test article consisted of a nonablating, 7 deg half-angle, axisymmetric cone with a small bluntness of 2.5 mm radius. During transition, angle of attack dropped from 13 to 5 deg and freestream unit Reynolds number increased from 2 x 106 to 8 x 106 / m. Mach number during this time was approximately seven. Earliest transition, determined from fluctuating pressures, occurred on the leeward meridian, at Rex = 3.1 x 106, α = 13 deg, and M = 7. Attachment line transition occurred at Rex = 4.7 x 106, α = 9 deg, and M = 7. The latest transition occurred off the windward meridian at Rex = 6.0 x 106 and Φ = 30 and 280 deg. Transition occurred at lower Reynolds numbers than the α = 0 deg transition measured during ascent {Rex = 11 x 106 at M = 5.2). The azimuthally averaged transition Reynolds number determined from thermocouples was Rex = 4.9 x 106. Away from the windward meridian, wind-tunnel transition occurred at lower Reynolds numbers than in flight. However, the decrement in transition Reynolds number due to wind-tunnel noise was not as severe as at zero angle of attack. Windtunnel windward transition occurred at a higher Reynolds number than in flight. It is posited that the destabilizing effects of wall cooling, which was higher in flight (Tw/ T0 = 0.18) than in ground test (Tw / T0 = 0.56), outweighed the effect of wind-tunnel noise on the windward transition. High-bandwidth instrumentation recorded periodic pressure fluctuations approximately midway between the windward and leeward meridians before transition. However, they could not be positively identified as a crossflow instability. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BOUNDARY layer (Aerodynamics) KW - RESEARCH KW - HYPERSONIC aerodynamics KW - MATHEMATICAL models KW - HYPERSONIC planes KW - ANGLE of attack (Aerodynamics) KW - REYNOLDS number N1 - Accession Number: 103282771; Stanfield, Scott A. 1 Kimmel, Roger L. 2 Adamczak, David 2 Juliano, Thomas J. 3; Affiliation: 1: Innovative Scientific Solutions, Inc., Dayton, Ohio 45459 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 3: University of Notre Dame, Notre Dame, Indiana 46556-5684; Source Info: May/Jun2015, Vol. 52 Issue 3, p637; Subject Term: BOUNDARY layer (Aerodynamics); Subject Term: RESEARCH; Subject Term: HYPERSONIC aerodynamics; Subject Term: MATHEMATICAL models; Subject Term: HYPERSONIC planes; Subject Term: ANGLE of attack (Aerodynamics); Subject Term: REYNOLDS number; Number of Pages: 13p; Document Type: Article L3 - 10.2514/1.A33197 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103282771&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Juliano, Thomas J. AU - Adamczak, David AU - Kimmel, Roger L. T1 - HIFiRE-5 Flight Test Results. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2015/05//May/Jun2015 VL - 52 IS - 3 M3 - Article SP - 650 EP - 663 SN - 00224650 AB - The Hypersonic International Flight Research Experimentation (HIFiRE-5) is a hypersonic flight test vehicle designed to investigate the aerothermodynamics of a three-dimensional geometry. It is a 7-deg minor-axis half-angle elliptic cone with a 2 : 1 aspect ratio and 2.5 mm nose radius. The flight test occurred in April 2012, but the upper stage of the sounding rocket failed to ignite, resulting in a peak Mach number of about 3 instead of the target of 7. The instrumentation (almost 300 thermocouples and 50 pressure transducers) performed well and provided a wealth of supersonic aeroheating and boundary-layer transition data. The pressure transducers indicated the expected dependence upon angle of attack and yaw and offer a check for the inertial measurement unit. Heat flux was calculated from paired thermocouples and boundary-layer transition locations were identified from the heating rates. Two boundary-layer transition mechanisms were encountered during the supersonic descent. One mode leads to transition over the acreage of the vehicle and correlates well with Rex; the other mechanism causes the leading-edge boundary-layer transition to advance rapidly over a small range of freestream Re and is suspected to be roughness-induced. The good performance of the instrumentation increases confidence in the success of a repeat flight. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLIGHT testing KW - RESEARCH KW - HYPERSONIC aerodynamics KW - MATHEMATICAL models KW - AEROTHERMODYNAMICS KW - BOUNDARY layer (Aerodynamics) KW - PRESSURE transducers N1 - Accession Number: 103282772; Juliano, Thomas J. 1 Adamczak, David 2 Kimmel, Roger L. 2; Affiliation: 1: University of Notre Dame, Notre Dame, Indiana 46556 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542; Source Info: May/Jun2015, Vol. 52 Issue 3, p650; Subject Term: FLIGHT testing; Subject Term: RESEARCH; Subject Term: HYPERSONIC aerodynamics; Subject Term: MATHEMATICAL models; Subject Term: AEROTHERMODYNAMICS; Subject Term: BOUNDARY layer (Aerodynamics); Subject Term: PRESSURE transducers; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 14p; Document Type: Article L3 - 10.2514/1.A33142 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103282772&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Borg, Matthew P. AU - Kimmel, Roger L. AU - Stanfield, Scott T1 - Traveling Crossflow Instability for the HIFiRE-5 Elliptic Cone. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2015/05//May/Jun2015 VL - 52 IS - 3 M3 - Article SP - 664 EP - 673 SN - 00224650 AB - A 38.1%-scale model of the Hypersonic International Flight Research Experimentation Program's Flight Five 2:1 elliptic cone flight vehicle was used to investigate the traveling crossflow instability in a Mach 6 quiet wind tunnel. Traveling crossflow waves were detected with pressure sensors mounted flush with the model surface. The crossflow instability phase speed and wave angle were calculated from the cross spectra of the three pressure sensors. Both quantities showed good agreement with linear stability theory. Duplicate runs at the same initial conditions showed excellent repeatability in traveling crossflow wave properties. Traveling crossflow waves in quiet flow showed very low levels of nonlinear interactions. No traveling crossflow waves were observed for any Reynolds number for elevated freestream noise levels, but transition occurred for a much lower Reynolds number than in quiet flow. Due to the lack of nonlinear growth in quiet flow and the absence of traveling crossflow waves in noisy flow, it appeared that the traveling crossflow instability was not the primary transition mechanism on the model for quiet or noisy flow in this wind tunnel. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERSONIC aerodynamics KW - MATHEMATICAL models KW - WIND tunnels KW - MACH number KW - PRESSURE sensors KW - RESEARCH KW - REYNOLDS number N1 - Accession Number: 103282773; Borg, Matthew P. 1 Kimmel, Roger L. 1 Stanfield, Scott 2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542 2: Innovative Scientific Solutions, Inc., Dayton, Ohio 45459; Source Info: May/Jun2015, Vol. 52 Issue 3, p664; Subject Term: HYPERSONIC aerodynamics; Subject Term: MATHEMATICAL models; Subject Term: WIND tunnels; Subject Term: MACH number; Subject Term: PRESSURE sensors; Subject Term: RESEARCH; Subject Term: REYNOLDS number; Number of Pages: 10p; Document Type: Article L3 - 10.2514/1.A33145 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103282773&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mah, Tai-Il AU - Keller, Kristin A. AU - Kerans, Ronald J. AU - Cinibulk, Michael K. T1 - Reduced Cracking in Oxide Fiber-Reinforced Oxide Composites via Freeze-Dry Processing. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2015/05// VL - 98 IS - 5 M3 - Article SP - 1437 EP - 1443 PB - Wiley-Blackwell SN - 00027820 AB - Porous oxide matrix composites typically develop significant numbers of matrix cracks during processing. Eliminating such cracks will lead to improved matrix-dominated properties and will also provide a significant step toward producing a dense oxide matrix composite. However, attaining a crack-free oxide matrix composite has been elusive due to the large shrinkages of the matrix in drying and sintering in the presence of the constraints to macro shrinkage imposed by fiber reinforcement, and to direct effects of drying. By utilizing a camphene based freeze-drying process combined with a nonshrinking matrix, the shrinkage cracks in an oxide fiber-reinforced composite can be essentially eliminated. This concept was validated for 2D fabric-reinforced composites. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL reduction KW - FRACTURE mechanics KW - FIBROUS composites KW - CHEMICAL processes KW - POROUS materials N1 - Accession Number: 102166755; Mah, Tai-Il 1,2 Keller, Kristin A. 1,2 Kerans, Ronald J. 1 Cinibulk, Michael K. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate 2: UES Inc.; Source Info: May2015, Vol. 98 Issue 5, p1437; Subject Term: CHEMICAL reduction; Subject Term: FRACTURE mechanics; Subject Term: FIBROUS composites; Subject Term: CHEMICAL processes; Subject Term: POROUS materials; Number of Pages: 7p; Illustrations: 3 Black and White Photographs, 2 Diagrams, 1 Graph; Document Type: Article L3 - 10.1111/jace.13500 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102166755&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Jianlin AU - Li, Lin AU - Peng, Ranran AU - Fu, Zhengping AU - Liu, Min AU - Lu, Yalin T1 - Structural Evolution and Multiferroics in Sr-Doped Bi7Fe1.5Co1.5Ti3O21 Ceramics. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2015/05// VL - 98 IS - 5 M3 - Article SP - 1528 EP - 1535 PB - Wiley-Blackwell SN - 00027820 AB - The ceramics with the composition of Sr xBi7− xFe1.5Co1.5Ti3O21−δ (0 ≤ x ≤ 1, SBFCT) were prepared by a citrate-nitrate combustion method, and the phase evolution with an increasing Sr content was investigated. Pure Aurivillius phase SBFCT with a layer number of n = 6 was obtained when x ≤ 0.25, and then the structure collapsed to 5 layers for x = 0.50, then alternating 4 and 5 layers for x = 0.75, and finally 4 layers for x = 1.00. Meanwhile, secondary phase Sr1− mBi mFe1− iCo iO3−γ appeared when x > 0.25, which is antiferromagnetic ( AFM) and with low resistivity. Enhanced ferromagnetic and ferroelectric properties were observed from single phase SBFCTs at the room temperature, and the ferromagnetic transition temperature ( Tc) increases with the Sr doping level x in the single phase range. The remnant magnetization (2 Mr) is 2.27 emu/g and the remnant polarization (2 Pr) is 2.89 μC/cm2 at an applied electric field of 100 kV/cm for the x = 0.25 sample. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRONTIUM KW - MULTIFERROIC materials KW - DOPING agents (Chemistry) KW - BISMUTH iron oxide KW - CHEMICAL structure KW - CERAMIC metals N1 - Accession Number: 102166736; Wang, Jianlin 1 Li, Lin 1 Peng, Ranran 1,2 Fu, Zhengping 1,2 Liu, Min 1,2 Lu, Yalin 1,2,3,4; Affiliation: 1: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China 2: Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China 3: Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China 4: Laser and Optics Research Center, Department of Physics, United States Air Force Academy; Source Info: May2015, Vol. 98 Issue 5, p1528; Subject Term: STRONTIUM; Subject Term: MULTIFERROIC materials; Subject Term: DOPING agents (Chemistry); Subject Term: BISMUTH iron oxide; Subject Term: CHEMICAL structure; Subject Term: CERAMIC metals; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; Number of Pages: 8p; Illustrations: 2 Black and White Photographs, 2 Charts, 5 Graphs; Document Type: Article L3 - 10.1111/jace.13495 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102166736&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reshetnyak, Victor Yu. AU - Pinkevych, Igor P. AU - Zadorozhnii, Victor I. AU - Evans, Dean R. T1 - Liquid Crystal Control of Surface Plasmon Resonance Sensor Based on Nanorods. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2015/05// VL - 613 IS - 1 M3 - Article SP - 110 EP - 120 SN - 15421406 AB - We analyze a theoretical model of the five layer nanorod-mediated surface plasmon resonance (SPR) sensor comprising a nematic LC layer. The light propagation through the layered system is studied solving the Fresnel equations under SPR conditions. We calculate the light reflectance angular spectrum and show that control of the orientational state of the LC layer enables us to manipulate position of the reflectance curve minimums, their depth and sensitivity. It allows one to choose an interval of the light incidence angles convenient for work without need in angular tuning of sensor at replacing of the analyte. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - SURFACE plasmon resonance KW - REFLECTANCE spectroscopy KW - THIN films KW - LIGHT propagation KW - NANORODS KW - OPTICAL detectors KW - columnar thin film KW - liquid crystal KW - sensing KW - surface plasmons N1 - Accession Number: 103669523; Reshetnyak, Victor Yu. 1 Pinkevych, Igor P. 1 Zadorozhnii, Victor I. 1 Evans, Dean R. 2; Affiliation: 1: Taras Shevchenko National University of Kyiv, Physics Faculty, Kyiv, Ukraine 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio, USA; Source Info: 2015, Vol. 613 Issue 1, p110; Subject Term: LIQUID crystals; Subject Term: SURFACE plasmon resonance; Subject Term: REFLECTANCE spectroscopy; Subject Term: THIN films; Subject Term: LIGHT propagation; Subject Term: NANORODS; Subject Term: OPTICAL detectors; Author-Supplied Keyword: columnar thin film; Author-Supplied Keyword: liquid crystal; Author-Supplied Keyword: sensing; Author-Supplied Keyword: surface plasmons; Number of Pages: 11p; Document Type: Article L3 - 10.1080/15421406.2015.1032080 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103669523&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gajewicz, Agnieszka AU - Schaeublin, Nicole AU - Rasulev, Bakhtiyor AU - Hussain, Saber AU - Leszczynska, Danuta AU - Puzyn, Tomasz AU - Leszczynski, Jerzy T1 - Towards understanding mechanisms governing cytotoxicity of metal oxides nanoparticles: Hints from nano-QSAR studies. JO - Nanotoxicology JF - Nanotoxicology Y1 - 2015/05// VL - 9 IS - 3 M3 - Article SP - 313 EP - 325 SN - 17435390 AB - The production of nanomaterials increases every year exponentially and therefore the probability these novel materials that they could cause adverse outcomes for human health and the environment also expands rapidly. We proposed two types of mechanisms of toxic action that are collectively applied in a nano-QSAR model, which provides governance over the toxicity of metal oxide nanoparticles to the human keratinocyte cell line (HaCaT). The combined experimental-theoretical studies allowed the development of an interpretative nano-QSAR model describing the toxicity of 18 nano-metal oxides to the HaCaT cell line, which is a common in vitro model for keratinocyte response during toxic dermal exposure. The comparison of the toxicity of metal oxide nanoparticles to bacteria Escherichia coli (prokaryotic system) and a human keratinocyte cell line (eukaryotic system), resulted in the hypothesis that different modes of toxic action occur between prokaryotic and eukaryotic systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Nanotoxicology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - METALLIC oxides KW - NANOSTRUCTURED materials KW - KERATINOCYTES KW - CELL lines KW - ESCHERICHIA coli KW - HaCaT KW - nano-metal oxides KW - nano-QSAR KW - nanoparticles KW - toxicity N1 - Accession Number: 102809754; Gajewicz, Agnieszka 1 Schaeublin, Nicole 2 Rasulev, Bakhtiyor 3 Hussain, Saber 2 Leszczynska, Danuta 4 Puzyn, Tomasz 1 Leszczynski, Jerzy 3; Affiliation: 1: Laboratory of Environmental Chemometrics, Institute for Environmental and Human Health Protection, Faculty of Chemistry, University of Gdańsk Gdańsk Poland 2: Biological Interaction of Nanomaterials, Applied Biotechnology Branch, Human Effectiveness Directorate 711th, Human Performance Wing, Air Force Research Laboratory Wright Patterson Air Force Base, OH USA 3: Department of Chemistry and Biochemistry 4: Department of Civil and Environmental Engineering, Interdisciplinary Nanotoxicity Center, Jackson State University Jackson, MS USA; Source Info: May2015, Vol. 9 Issue 3, p313; Subject Term: NANOPARTICLES; Subject Term: METALLIC oxides; Subject Term: NANOSTRUCTURED materials; Subject Term: KERATINOCYTES; Subject Term: CELL lines; Subject Term: ESCHERICHIA coli; Author-Supplied Keyword: HaCaT; Author-Supplied Keyword: nano-metal oxides; Author-Supplied Keyword: nano-QSAR; Author-Supplied Keyword: nanoparticles; Author-Supplied Keyword: toxicity; Number of Pages: 13p; Document Type: Article L3 - 10.3109/17435390.2014.930195 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102809754&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - De Sio, Luciano AU - Placido, Tiziana AU - Comparelli, Roberto AU - Lucia Curri, M. AU - Striccoli, Marinella AU - Tabiryan, Nelson AU - Bunning, Timothy J. T1 - Next-generation thermo-plasmonic technologies and plasmonic nanoparticles in optoelectronics. JO - Progress in Quantum Electronics JF - Progress in Quantum Electronics Y1 - 2015/05// VL - 41 M3 - Article SP - 23 EP - 70 SN - 00796727 AB - Controlling light interactions with matter on the nanometer scale provides for compelling opportunities for modern technology and stretches our understanding and exploitation of applied physics, electronics, and fabrication science. The smallest size to which light can be confined using standard optical elements such as lenses and mirrors is limited by diffraction. Plasmonic nanostructures have the extraordinary capability to control light beyond the diffraction limit through an unique phenomenon called the localized plasmon resonance. This remarkable capability enables unique prospects for the design, fabrication and characterization of highly integrated photonic signal-processing systems, nanoresolution optical imaging techniques and nanoscale electronic circuits. This paper summarizes the basic principles and the main achievements in the practical utilization of plasmonic effects in nanoparticles. Specifically, the paper aims at highlighting the major contributions of nanoparticles to nanoscale temperature monitoring, modern “drug free” medicine and the application of nanomaterials to a new generation of opto-electronics integrated circuits. [ABSTRACT FROM AUTHOR] AB - Copyright of Progress in Quantum Electronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMONICS (Electronics) KW - NANOPARTICLES KW - OPTOELECTRONICS KW - OPTICAL elements KW - SURFACE plasmon resonance KW - SIGNAL processing KW - Nanomaterials KW - Nanomedicine KW - Optoelectronics KW - Plasmonics KW - Soft matter N1 - Accession Number: 102331921; De Sio, Luciano 1,2; Email Address: luciano.desio@fis.unical.it Placido, Tiziana 3,4 Comparelli, Roberto 4 Lucia Curri, M. 4 Striccoli, Marinella 4 Tabiryan, Nelson 1 Bunning, Timothy J. 5; Affiliation: 1: Beam Engineering for Advanced Measurements Company, Winter Park, FL 32789, USA 2: Department of Physics – University of Calabria Centre of Excellence for the Study of Innovative Functional Materials, 87036 Arcavacata di Rende, Italy 3: Università degli Studi di Bari – Dip. Chimica, Via Orabona 4, 70126 Bari, Italy 4: CNR-IPCF Istituto per i Processi Chimici e Fisici, Sez. Bari, c/o Dip. Chimica Via Orabona 4, 70126 Bari, Italy 5: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7707, USA; Source Info: May2015, Vol. 41, p23; Subject Term: PLASMONICS (Electronics); Subject Term: NANOPARTICLES; Subject Term: OPTOELECTRONICS; Subject Term: OPTICAL elements; Subject Term: SURFACE plasmon resonance; Subject Term: SIGNAL processing; Author-Supplied Keyword: Nanomaterials; Author-Supplied Keyword: Nanomedicine; Author-Supplied Keyword: Optoelectronics; Author-Supplied Keyword: Plasmonics; Author-Supplied Keyword: Soft matter; Number of Pages: 48p; Document Type: Article L3 - 10.1016/j.pquantelec.2015.03.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102331921&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - K Ilin AU - K A Yagotintsev AU - C Zhou AU - P Gao AU - J Kosse AU - S J Otten AU - W A J Wessel AU - T J Haugan AU - D C van der Laan AU - A Nijhuis T1 - Experiments and FE modeling of stress–strain state in ReBCO tape under tensile, torsional and transverse load. JO - Superconductor Science & Technology JF - Superconductor Science & Technology Y1 - 2015/05// VL - 28 IS - 5 M3 - Article SP - 1 EP - 1 SN - 09532048 AB - For high current superconductors in high magnet fields with currents in the order of 50 kA, single ReBCO coated conductors must be assembled in a cable. The geometry of such a cable is mostly such that combined torsion, axial and transverse loading states are anticipated in the tapes and tape joints. The resulting strain distribution, caused by different thermal contraction and electromagnetic forces, will affect the critical current of the tapes. Tape performance when subjected to torsion, tensile and transverse loading is the key to understanding limitations for the composite cable performance. The individual tape material components can be deformed, not only elastically but also plastically under these loads. A set of experimental setups, as well as a convenient and accurate method of stress–strain state modeling based on the finite element method have been developed. Systematic measurements on single ReBCO tapes are carried out combining axial tension and torsion as well as transverse loading. Then the behavior of a single tape subjected to the various applied loads is simulated in the model. This paper presents the results of experimental tests and detailed FE modeling of the 3D stress–strain state in a single ReBCO tape under different loads, taking into account the temperature dependence and the elastic-plastic properties of the tape materials, starting from the initial tape processing conditions during its manufacture up to magnet operating conditions. Furthermore a comparison of the simulations with experiments is presented with special attention for the critical force, the threshold where the tape performance becomes irreversibly degraded. We verified the influence of tape surface profile non-uniformity and copper stabilizer thickness on the critical force. The FE models appear to describe the tape experiments adequately and can thus be used as a solid basis for optimization of various cabling concepts. [ABSTRACT FROM AUTHOR] AB - Copyright of Superconductor Science & Technology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH temperature superconductors -- Magnetic properties KW - MAGNETIC tapes KW - FINITE element method KW - STRAIN rate (Materials science) KW - TORSIONAL load KW - ELECTRIC conductors N1 - Accession Number: 102072464; K Ilin 1 K A Yagotintsev 1 C Zhou 1 P Gao 1 J Kosse 1 S J Otten 1 W A J Wessel 1 T J Haugan 2 D C van der Laan 3 A Nijhuis 1; Affiliation: 1: University of Twente, Faculty of Science & Technology, 7522 NB Enschede, The Netherlands 2: US Air Force Research Laboratory, Wright Patterson AFB, OH 45433, USA 3: Advanced Conductor Technologies and University of Colorado, Boulder, CO 80301, USA; Source Info: May2015, Vol. 28 Issue 5, p1; Subject Term: HIGH temperature superconductors -- Magnetic properties; Subject Term: MAGNETIC tapes; Subject Term: FINITE element method; Subject Term: STRAIN rate (Materials science); Subject Term: TORSIONAL load; Subject Term: ELECTRIC conductors; NAICS/Industry Codes: 334610 Manufacturing and reproducing magnetic and optical media; NAICS/Industry Codes: 334613 Blank Magnetic and Optical Recording Media Manufacturing; NAICS/Industry Codes: 334614 Software and Other Prerecorded Compact Disc, Tape, and Record Reproducing; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0953-2048/28/5/055006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102072464&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2015-06015-001 AN - 2015-06015-001 AU - Endsley, Mica R. T1 - Situation awareness: Operationally necessary and scientifically grounded. JF - Cognition, Technology & Work JO - Cognition, Technology & Work JA - Cogn Technol Work Y1 - 2015/05// VL - 17 IS - 2 SP - 163 EP - 167 CY - Germany PB - Springer SN - 1435-5558 SN - 1435-5566 AD - Endsley, Mica R., United States Air Force, Washington, DC, US N1 - Accession Number: 2015-06015-001. Partial author list: First Author & Affiliation: Endsley, Mica R.; United States Air Force, Washington, DC, US. Release Date: 20150216. Correction Date: 20150601. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Comment/Reply. Language: English. Major Descriptor: Awareness; Epistemology; Reality; Responsibility. Classification: Philosophy (2630). Population: Human (10). Page Count: 5. Issue Publication Date: May, 2015. Publication History: First Posted Date: Feb 7, 2015; Accepted Date: Feb 5, 2014; First Submitted Date: Jan 30, 2014. Copyright Statement: Springer-Verlag London (outside the USA). 2015. AB - Comments on an article by S. W. A. Dekker (see record [rid]2015-03379-001[/rid]). Dekker (Cogn Tech Work, doi: 10.1007/s10111-015-0320-8 , 2015) provides a stilted account of situation awareness (SA) in which it is only (or primarily) used to explain away human error. He ignores the large body of work over the past 25 years that has clearly defined SA, builds a strong foundation of cognitive theory on how it works in the brain, and provides a substantial base of scientifically grounded principles for how to improve SA through improvements in display design, automation, and training (see Endsley and Jones, Designing for situation awareness: an approach to human-centered design, 2nd edn. Taylor and Francis, London, 2012). He also ignores work on human error that delves in detail into the reasons for losses of SA in accidents and uses that knowledge to provide needed system improvements. SA is widely recognized by operators and practitioners across aviation, power systems, emergency management, military, medical, and many other domains as being critical to effective decision making and performance. It is incumbent on the human factors profession to respond to this need with improved systems and approaches for enhancing SA in the difficult and complex worlds where it is so essential. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Situation awareness KW - Complacency KW - Constructs KW - Epistemology KW - Operationalism KW - Representationalism KW - 2015 KW - Awareness KW - Epistemology KW - Reality KW - Responsibility KW - 2015 DO - 10.1007/s10111-015-0323-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-06015-001&site=ehost-live&scope=site UR - mica.r.endsley-jones.civ@mail.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Savich, G. R. AU - Sidor, D. E. AU - Du, X. AU - Morath, C. P. AU - Cowan, V. M. AU - Wicks, G. W. T1 - Diffusion current characteristics of defect-limited nBn mid-wave infrared detectors. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2015/04/30/ VL - 106 IS - 17 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00036951 AB - Mid-wave infrared, nBn detectors remain limited by diffusion current generated in the absorber region even when defect concentrations are elevated. In contrast, defect-limited conventional pn-junction based photodiodes are subject to Shockley-Read-Hall generation in the depletion region and subsequent carrier drift. Ideal nBn-architecture devices would be limited by Auger 1 generation; however, typical nBn detectors exhibit defect-dominated performance associated with Shockley-Read-Hall generation in the quasi-neutral absorbing region. Reverse saturation current density characteristics for defect-limited devices depend on the minority carrier diffusion length, absorbing layer thickness, and the dominant minority carrier generation mechanism. Unlike pn-based photodiodes, changes in nBn dark current due to elevated defect concentrations do not manifest at small biases, thus, the zero bias resistance area product, RoA, is not a useful parameter for characterizing nBn-architecture photodetector performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFRARED detectors KW - DIFFUSION currents KW - PHOTODIODES KW - ELECTRIC resistance KW - PERFORMANCE evaluation N1 - Accession Number: 102422251; Savich, G. R. 1 Sidor, D. E. 1 Du, X. 1 Morath, C. P. 2 Cowan, V. M. 2 Wicks, G. W. 1; Email Address: wicks@optics.rochester.edu; Affiliation: 1: Institute of Optics, University of Rochester, 275 Hutchison Rd., Rochester, New York 14627-0186, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Ave. SE, Kirtland AFB, New Mexico 87117, USA; Source Info: 2015, Vol. 106 Issue 17, p1; Subject Term: INFRARED detectors; Subject Term: DIFFUSION currents; Subject Term: PHOTODIODES; Subject Term: ELECTRIC resistance; Subject Term: PERFORMANCE evaluation; Number of Pages: 4p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.4919450 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102422251&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Glavin, Nicholas R. AU - Muratore, Christopher AU - Jespersen, Michael L. AU - Jianjun Hu AU - Fisher, Timothy S. AU - Voevodin, Andrey A. T1 - Temporally and spatially resolved plasma spectroscopy in pulsed laser deposition of ultra-thin boron nitride films. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2015/04/28/ VL - 117 IS - 16 M3 - Article SP - 165305-1 EP - 165305-10 PB - American Institute of Physics SN - 00218979 AB - Physical vapor deposition (PVD) has recently been investigated as a viable, alternative growth technique for two-dimensional materials with multiple benefits over other vapor deposition synthesis methods. The high kinetic energies and chemical reactivities of the condensing species formed from PVD processes can facilitate growth over large areas and at reduced substrate temperatures. In this study, chemistry, kinetic energies, time of flight data, and spatial distributions within a PVD plasma plume ablated from a boron nitride (BN) target by a KrF laser at different pressures of nitrogen gas were investigated. Time resolved spectroscopy and wavelength specific imaging were used to identify and track atomic neutral and ionized species including B+, B*, N+, N*, and molecular species including N2*, N2+, and BN. Formation and decay of these species formed both from ablation of the target and from interactions with the background gas were investigated and provided insights into fundamental growth mechanisms of continuous, amorphous boron nitride thin films. The correlation of the plasma diagnostic results with film chemical composition and thickness uniformity studies helped to identify that a predominant mechanism for BN film formation is condensation surface recombination of boron ions and neutral atomic nitrogen species. These species arrive nearly simultaneously to the substrate location, and BN formation occurs microseconds before arrival of majority of N+ ions generated by plume collisions with background molecular nitrogen. The energetic nature and extended dwelling time of incident N+ ions at the substrate location was found to negatively impact resulting BN film stoichiometry and thickness. Growth of stoichiometric films was optimized at enriched concentrations of ionized boron and neutral atomic nitrogen in plasma near the condensation surface, providing few nanometer thick films with 1:1 BN stoichiometry and good thicknesses uniformity over macroscopic areas. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA spectroscopy KW - REACTIVITY (Chemistry) KW - BORON nitride KW - STOICHIOMETRIC combustion KW - WAVELENGTHS N1 - Accession Number: 102388387; Glavin, Nicholas R. 1,2; Email Address: nicholas.glavin.1@us.af.mil Muratore, Christopher 1,3 Jespersen, Michael L. 1,4 Jianjun Hu 1,4 Fisher, Timothy S. 2 Voevodin, Andrey A. 1; Email Address: andrey.voevodin@us.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 2: School of Mechanical Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA 3: University of Dayton, Dayton, Ohio 45409, USA 4: University of Dayton Research Institute, Dayton, Ohio 45409, USA; Source Info: 2015, Vol. 117 Issue 16, p165305-1; Subject Term: PLASMA spectroscopy; Subject Term: REACTIVITY (Chemistry); Subject Term: BORON nitride; Subject Term: STOICHIOMETRIC combustion; Subject Term: WAVELENGTHS; Number of Pages: 10p; Illustrations: 1 Black and White Photograph, 2 Diagrams, 6 Graphs; Document Type: Article L3 - 10.1063/1.4919068 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102388387&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gentz, Gerald AU - Thelen, Bryce AU - Gholamisheeri, Masumeh AU - Litke, Paul AU - Brown, Adam AU - Hoke, John AU - Toulson, Elisa T1 - A study of the influence of orifice diameter on a turbulent jet ignition system through combustion visualization and performance characterization in a rapid compression machine. JO - Applied Thermal Engineering JF - Applied Thermal Engineering Y1 - 2015/04/25/ VL - 81 M3 - Article SP - 399 EP - 411 SN - 13594311 AB - Turbulent Jet Ignition is a prechamber initiated combustion system that can replace the spark plug in a standard spark ignition engine. The nozzle orifice is critical in a turbulent jet ignition system as it determines the shape and structure of the jet which acts as a distributed ignition source. In this paper, the effect of nozzle diameter and number was studied by performing combustion visualization and characterization for combustion of a premixed propane/air mixture initiated by a turbulent jet ignition system in a Rapid Compression Machine. Color images of the jet ignition process and visualization of the emission of the chemiluminesence of OH ∗ and CH ∗ radicals were performed. Several nozzle configurations were tested which expanded on the limited experimental results that were available in the literature. The performance of the turbulent jet ignition system based on the nozzle orifice diameter was characterized by considering the 0–10% and 10–90% burn durations of the pressure rise due to combustion. In general it was found that for near stoichiometric air to fuel ratios, a nozzle that produced more spatially distributed jets would result in faster combustion progression. However, at leaner conditions a smaller diameter nozzle that produced a faster and more vigorous jet was required to initiate combustion. The Reynolds number of the discharging jet for the single orifice cases was calculated and it was found that increasing the nozzle diameter increased the Reynolds number, and thus the turbulence for λ = 1. The Reynolds number was not found to be sensitive to orifice diameter at the leaner condition of λ = 1.25. Further characterization of the jet development leads to the conclusion that the jet was considered to be in the intermediate flow field, where the transient jet does not have enough time to become fully developed before it reaches the combustion chamber wall. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Thermal Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TURBULENT jets (Fluid dynamics) KW - SPARK ignition engines KW - COMBUSTION chambers KW - SPARK plugs KW - NOZZLES KW - REYNOLDS number KW - Combustion visualization KW - Ignition enhancement KW - Turbulent jet ignition N1 - Accession Number: 102074120; Gentz, Gerald 1; Thelen, Bryce 1; Gholamisheeri, Masumeh 1; Litke, Paul 2; Brown, Adam 3; Hoke, John 3; Toulson, Elisa 1; Email Address: toulson@msu.edu; Affiliations: 1: Department of Mechanical Engineering, Michigan State University, East Lansing, MI 48824, USA; 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; 3: Innovative Scientific Solutions, Inc. (ISSI), 7610 McEwen Rd, Dayton, OH 45459, USA; Issue Info: Apr2015, Vol. 81, p399; Subject Term: TURBULENT jets (Fluid dynamics); Subject Term: SPARK ignition engines; Subject Term: COMBUSTION chambers; Subject Term: SPARK plugs; Subject Term: NOZZLES; Subject Term: REYNOLDS number; Author-Supplied Keyword: Combustion visualization; Author-Supplied Keyword: Ignition enhancement; Author-Supplied Keyword: Turbulent jet ignition; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; NAICS/Industry Codes: 562210 Waste treatment and disposal; NAICS/Industry Codes: 333618 Other Engine Equipment Manufacturing; NAICS/Industry Codes: 333619 Other engine and power transmission equipment manufacturing; NAICS/Industry Codes: 326199 All Other Plastics Product Manufacturing; NAICS/Industry Codes: 326198 All other plastic product manufacturing; NAICS/Industry Codes: 336320 Motor Vehicle Electrical and Electronic Equipment Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.applthermaleng.2015.02.026 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=102074120&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Konkova, T. AU - Mironov, S. AU - Korznikov, A. AU - Korznikova, G. AU - Myshlyaev, M.M. AU - Semiatin, S.L. T1 - Grain structure evolution during cryogenic rolling of alpha brass. JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2015/04/25/ VL - 629 M3 - Article SP - 140 EP - 147 SN - 09258388 AB - High-resolution electron backscatter diffraction (EBSD) was used to study grain structure development during cryogenic rolling of Cu–29.5Zn brass. Microstructure evolution was found to be broadly similar to that occurring during rolling at room temperature. Specifically, favorably-oriented grains (Copper {1 1 2}〈1 1 1〉 and S {1 2 3}〈6 3 4〉) experienced profuse deformation twinning followed by extensive shear banding. This eventually produced an ultrafine structure with a mean grain size of ∼0.2 μm. On the other hand, grains with crystallographic orientations close to Brass {1 1 0}〈1 1 2〉 and Goss {1 1 0}〈1 0 0〉 were found to be stable against twinning/shear banding and thus showed no significant grain refinement. As a result, the final structure developed in heavily-rolled material was distinctly inhomogeneous consisting of mm-scale remnants of original grains with poorly developed substructure and ultra-fine grain domains. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALPHA brass KW - ROLLING (Metalwork) KW - CRYSTAL grain boundaries KW - CRYSTAL structure KW - CRYOGENICS KW - ELECTRONS -- Backscattering KW - Grain boundaries KW - Microstructure KW - Nanofabrication KW - Nanostructured materials KW - Scanning electron microscopy N1 - Accession Number: 101000312; Konkova, T. 1 Mironov, S. 2 Korznikov, A. 1,3 Korznikova, G. 1 Myshlyaev, M.M. 4 Semiatin, S.L. 5; Affiliation: 1: Institute for Metals Superplasticity Problems, Rssian Academy of Science, 39 Khalturin Str., Ufa 450001, Russia 2: Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Sendai 980-8579, Japan 3: National Research Tomsk State University, 36 Lenina av., Tomsk 634050, Russia 4: Baikov Institute of Metallurgy and Material Science, Russian Academy of Science, 49 Lenin-av., Moscow 119991, Russia 5: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Apr2015, Vol. 629, p140; Subject Term: ALPHA brass; Subject Term: ROLLING (Metalwork); Subject Term: CRYSTAL grain boundaries; Subject Term: CRYSTAL structure; Subject Term: CRYOGENICS; Subject Term: ELECTRONS -- Backscattering; Author-Supplied Keyword: Grain boundaries; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Nanofabrication; Author-Supplied Keyword: Nanostructured materials; Author-Supplied Keyword: Scanning electron microscopy; NAICS/Industry Codes: 331315 Aluminum Sheet, Plate, and Foil Manufacturing; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331410 Nonferrous Metal (except Aluminum) Smelting and Refining; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331491 Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331221 Rolled Steel Shape Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jallcom.2014.12.241 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101000312&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jarrett, Jeremy W. AU - Xiaoying Liu AU - Nealey, Paul F. AU - Vaia, Richard A. AU - Cerullo, Giulio AU - Knappenberger Jr., Kenneth L. T1 - Communication: SHG-detected circular dichroism imaging using orthogonal phase-locked laser pulses. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2015/04/21/ VL - 142 IS - 15 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00219606 AB - We demonstrate a novel method for second harmonic generation-detected circular dichroism (CD) imaging based on the use of phase-locked, temporally delayed femtosecond laser pulses. The polarization state of the fundamental wave was controllably changed over 2μ rad by using a birefringent delay line, which provided attosecond inter-pulse delays for orthogonal phase-locked replicas; the achievable phase stability was 14 as. By introducing either a positive or negative delay of ~667 as, we induced a ±μ/2 phase shift between the orthogonally polarized pulses, resulting in left circularly polarized or right circularly polarized light. CD imaging performance using the pulse sequence was compared to results obtained for plasmonic nanoantennas using a rotating quarter-wave plate. The pulse sequence is expected to simplify polarization-resolved optical imaging by reducing experimental artifacts and decreasing image acquisition times. This method can be easily extended to other CD spectroscopy measurements. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SECOND harmonic generation KW - FEMTOSECOND lasers KW - OPTICAL antennas KW - MODE-locked lasers KW - PHASE transformations (Physics) KW - ATTOSECOND pulses KW - CIRCULAR dichroism KW - IMAGING systems N1 - Accession Number: 102233100; Jarrett, Jeremy W. 1 Xiaoying Liu 2 Nealey, Paul F. 2 Vaia, Richard A. 3 Cerullo, Giulio 4 Knappenberger Jr., Kenneth L. 1; Email Address: klk@chem.fsu.edu; Affiliation: 1: Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, USA 2: Institute for Molecular Engineering, University of Chicago, Chicago, Illinois 60637, USA 3: Air Force Research Laboratory, 2941 Hobson Way, Wright Patterson Air Force Base, Dayton, Ohio 45433, USA 4: IFN-CNR, Dipartimento di Fisica, Politecnio di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy; Source Info: 2015, Vol. 142 Issue 15, p1; Subject Term: SECOND harmonic generation; Subject Term: FEMTOSECOND lasers; Subject Term: OPTICAL antennas; Subject Term: MODE-locked lasers; Subject Term: PHASE transformations (Physics); Subject Term: ATTOSECOND pulses; Subject Term: CIRCULAR dichroism; Subject Term: IMAGING systems; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; Number of Pages: 5p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.4918972 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102233100&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martinez Jr., Oscar AU - Sanchez, Jenny C. AU - Ard, Shaun G. AU - Anyang Li AU - Melko, Joshua J. AU - Shuman, Nicholas S. AU - Hua Guo AU - Viggiano, Albert A. T1 - Selected-ion flow tube temperature-dependent measurements for the reactions of O2+ with N atoms and N2+ with O atoms. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2015/04/21/ VL - 142 IS - 15 M3 - Article SP - 1 EP - 6 PB - American Institute of Physics SN - 00219606 AB - The temperature variation of rate constants has been measured for the gas phase reactions of the oxycation O2+ with N atoms and of N2+ with O atoms from 120 to 400 K using a variable temperatureselected ion flow tube. Measured room temperature rate constants, 0.75 × 10-10 cm³ s-1 (±30%) for O2+ with N and 1.4 × 10-10 cm³ s-1 (±30%) for N2+ with O, are in agreement with previously reported values. A temperature dependence of T-0.7(±0.3) is observed for the O2+ + N reaction; however, theN2+ + O reaction is found to be independent of temperature. Calculations at varying levels of theory were used in tandem with experiments to evaluate likely pathways in potential energy surfaces for the reactions of concern. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS phase reactions KW - TEMPERATURE effect KW - OXYGEN KW - NITROGEN KW - SELECTED ion monitoring KW - TUBES N1 - Accession Number: 102233050; Martinez Jr., Oscar 1 Sanchez, Jenny C. 1 Ard, Shaun G. 1 Anyang Li 2 Melko, Joshua J. 1,3 Shuman, Nicholas S. 1 Hua Guo 2 Viggiano, Albert A. 1; Email Address: afrl.rvborgmailbox@kirtland.af.mil; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico 87117-5776, USA 2: Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, USA 3: Department of Chemistry, University of North Florida, Jacksonville, FL 32224, USA; Source Info: 2015, Vol. 142 Issue 15, p1; Subject Term: GAS phase reactions; Subject Term: TEMPERATURE effect; Subject Term: OXYGEN; Subject Term: NITROGEN; Subject Term: SELECTED ion monitoring; Subject Term: TUBES; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 331210 Iron and Steel Pipe and Tube Manufacturing from Purchased Steel; Number of Pages: 6p; Illustrations: 2 Diagrams, 4 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.4916913 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102233050&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rivin, Oleg AU - Broide, Amir AU - Maskova, Silvie AU - Lucas, Matthew AU - Hen, Amir AU - Orion, Itzhak AU - Salhov, Shai AU - Shandalov, Michael AU - Moreira Dos Santos, Antonio AU - Molaison, Jamie AU - Chen, Zhiqiang AU - Halevy, Itzhak T1 - High pressure neutron powder diffraction study of FeCr with and without hydrogen exposure. JO - Hyperfine Interactions JF - Hyperfine Interactions Y1 - 2015/04/15/ VL - 231 IS - 1-3 M3 - Article SP - 29 EP - 36 SN - 03043843 AB - The crystal structure of FeCr(x = 0, 0.2 and 0.4) materials, with and without exposure to Hydrogen, is investigated using neutron powder diffraction under the applied external high-pressure. Above a certain applied pressure, P, a structural phase transition, from cubic to hexagonal symmetry, is observed, in agreement with previous x-ray diffraction results. The P values exhibit an increase with x increase. The possibility for an evolution of a magnetic structure with pressure, x and Hydrogen exposure, is examined. Finally, a broadening of the angular profile of the (200) reflection (cubic phase) is identified and reported. [ABSTRACT FROM AUTHOR] AB - Copyright of Hyperfine Interactions is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEUTRON diffraction KW - HIGH pressure (Science) KW - HYDROGEN KW - IRON compounds KW - PHASE transformations (Physics) KW - MAGNETIC structure KW - Fe-Cr KW - High-Pressure KW - Hydrogen exposure KW - Neutron diffraction N1 - Accession Number: 101831311; Rivin, Oleg 1; Email Address: drorivin@gmail.com Broide, Amir Maskova, Silvie 2 Lucas, Matthew 3 Hen, Amir Orion, Itzhak 4 Salhov, Shai 1 Shandalov, Michael 1 Moreira Dos Santos, Antonio 5 Molaison, Jamie 5 Chen, Zhiqiang 6 Halevy, Itzhak; Affiliation: 1: Department of Physics, Nuclear Research Centre-Negev, P.O. Box 9001 Beer-Sheva Israel 2: Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, KeKarlovu 5 12116 Prague 2 Czech Republic 3: Air Force Research Laboratory, Dayton USA 4: Nuclear Engineering Departments, Ben Gurion University, Beer-Sheva Israel 5: BL3, Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge USA 6: NSLS, Brookhaven National Laboratory, Upton 11973 USA; Source Info: Apr2015, Vol. 231 Issue 1-3, p29; Subject Term: NEUTRON diffraction; Subject Term: HIGH pressure (Science); Subject Term: HYDROGEN; Subject Term: IRON compounds; Subject Term: PHASE transformations (Physics); Subject Term: MAGNETIC structure; Author-Supplied Keyword: Fe-Cr; Author-Supplied Keyword: High-Pressure; Author-Supplied Keyword: Hydrogen exposure; Author-Supplied Keyword: Neutron diffraction; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1007/s10751-014-1104-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101831311&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhdanov, B.V. AU - Rotondaro, M.D. AU - Shaffer, M.K. AU - Knize, R.J. T1 - Power degradation due to thermal effects in Potassium Diode Pumped Alkali Laser. JO - Optics Communications JF - Optics Communications Y1 - 2015/04/15/ VL - 341 M3 - Article SP - 97 EP - 100 SN - 00304018 AB - This paper presents results of our study of the performance of a Potassium DPAL operating in pulsed mode with pump pulses from 0.05 to 5 ms long at different pump powers and alkali cell temperatures. The experiments showed the DPAL output power degradation in time with a characteristic time in the range from 0.5 ms to 4.5 ms. We attribute the power degradation to heating of the vapor. The recorded spectrum of the side fluorescence indicates that multi-photon excitation, energy pooling collisions and ionization are also present. [ABSTRACT FROM AUTHOR] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS -- Pumping KW - THERMAL analysis KW - POTASSIUM KW - DIODES KW - ALKALI metals KW - FLUORESCENCE KW - Alkali lasers KW - DPAL KW - Potassium laser KW - Thermal effects N1 - Accession Number: 100654277; Zhdanov, B.V. 1; Email Address: boris.zhdanov.ctr@usafa.edu Rotondaro, M.D. 1 Shaffer, M.K. 1 Knize, R.J. 1; Affiliation: 1: US Air Force Academy, Laser and Optics Research Center, 2354 Fairchild Dr., Ste. 2A31, CO 80840, USA; Source Info: Apr2015, Vol. 341, p97; Subject Term: LASERS -- Pumping; Subject Term: THERMAL analysis; Subject Term: POTASSIUM; Subject Term: DIODES; Subject Term: ALKALI metals; Subject Term: FLUORESCENCE; Author-Supplied Keyword: Alkali lasers; Author-Supplied Keyword: DPAL; Author-Supplied Keyword: Potassium laser; Author-Supplied Keyword: Thermal effects; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.optcom.2014.12.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100654277&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Makri, Eleana AU - Kottos, Tsampikos AU - Vitebskiy, Ilya T1 - Reflective optical limiter based on resonant transmission. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2015/04/15/ VL - 91 IS - 4-B M3 - Article SP - 1 EP - 6 SN - 10502947 AB - Optical limiters transmit low-level radiation while blocking electromagnetic pulses with excessively high energy (energy limiters) or with excessively high peak intensity (power limiters). A typical optical limiter absorbs most of the high-level radiation, which can cause its overheating and destruction. Here we introduce the concept of a reflective energy limiter which blocks electromagnetic pulses with excessively high total energy by reflecting them back to space, rather than absorbing them. The idea is to use a defect layer with temperature-dependent loss tangent embedded in a low-loss photonic structure. The low-energy pulses with central frequency close to that of the localized defect mode will pass through. But if the cumulative energy carried by the pulse exceeds certain level, the entire photonic structure becomes highly reflective (not absorptive) within a broad frequency range. The underlying physical mechanism is based on self-regulated impedance mismatch which increases dramatically with the cumulative energy carried by the pulse. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL limiters KW - RESEARCH KW - OPTICAL devices KW - OPTICAL resonance KW - TRANSMISSION of light KW - REFLECTIVE materials KW - ELECTROMAGNETIC pulses N1 - Accession Number: 102749989; Makri, Eleana 1 Kottos, Tsampikos 1 Vitebskiy, Ilya 2; Affiliation: 1: Department of Physics, Wesleyan University, Middletown, Connecticut 06459, USA 2: Air Force Research Laboratory, Sensors Directorate, Wright Patterson Air Force Base, Ohio 45433, USA; Source Info: Apr2015, Vol. 91 Issue 4-B, p1; Subject Term: OPTICAL limiters; Subject Term: RESEARCH; Subject Term: OPTICAL devices; Subject Term: OPTICAL resonance; Subject Term: TRANSMISSION of light; Subject Term: REFLECTIVE materials; Subject Term: ELECTROMAGNETIC pulses; Number of Pages: 6p; Document Type: Article L3 - 10.1103/PhysRevA.91.043838 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102749989&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Look, David C. AU - Heller, Eric R. AU - Yu-Feng Yao AU - Yang, C. C. T1 - Significant mobility enhancement in extremely thin highly doped ZnO films. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2015/04/13/ VL - 106 IS - 15 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00036951 AB - Highly Ga-doped ZnO (GZO) films of thicknesses d = 5, 25, 50, and 300 nm, grown on 160-nm ZnO buffer layers by molecular beam epitaxy, had 294-K Hall-effect mobilities μH of 64.1, 43.4, 37.0, and 34.2 cm²/V-s, respectively. This extremely unusual ordering of μH vs d is explained by the existence of a very high-mobility Debye tail in the ZnO, arising from the large Fermi-level mismatch between the GZO and the ZnO. Scattering theory in conjunction with Poisson analysis predicts a Debye-tail mobility of 206 cm²/V-s at the interface (z = d), falling to 58 cm²/V-s at z = d + 2 nm. Excellent fits to μH vs d and sheet concentration ns vs d are obtained with no adjustable parameters. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide thin films KW - DOPED semiconductors KW - GALLIUM (Metal) KW - MOLECULAR beam epitaxy KW - HALL effect KW - SCATTERING (Mathematics) N1 - Accession Number: 102164678; Look, David C. 1,2,3; Email Address: david.look@wright.edu Heller, Eric R. 4 Yu-Feng Yao 5 Yang, C. C. 5; Email Address: ccycc@ntu.edu.tw; Affiliation: 1: Semiconductor Research Center, Wright State University, 3640 Colonel Glenn Hwy., Dayton, Ohio 45435, USA 2: Wyle Laboratories, Inc., 2601 Mission Point Blvd., Dayton, Ohio 45431, USA 3: Air Force Research Laboratory Sensors Directorate, 2241 Avionics Circle, Wright-Patterson AFB, Ohio 45433, USA 4: Air Force Research Laboratory Materials and Manufacturing Directorate, 3005 Hobson Way, Wright-Patterson AFB, Ohio 45433, USA 5: Institute of Photonics and Optoelectronics, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan; Source Info: 2015, Vol. 106 Issue 15, p1; Subject Term: ZINC oxide thin films; Subject Term: DOPED semiconductors; Subject Term: GALLIUM (Metal); Subject Term: MOLECULAR beam epitaxy; Subject Term: HALL effect; Subject Term: SCATTERING (Mathematics); Number of Pages: 4p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.4917561 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102164678&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Paul M Alsing T1 - Parametric down conversion with a depleted pump as a model for classical information transmission capacity of quantum black holes. JO - Classical & Quantum Gravity JF - Classical & Quantum Gravity Y1 - 2015/04/09/ VL - 32 IS - 7 M3 - Article SP - 1 EP - 1 SN - 02649381 AB - In this paper we extend the investigation of Adami and Ver Steeg (2014 Class. Quantum Grav.31 075015) to treat the process of black hole (BH) particle emission effectively as the analogous quantum optical process of parametric down conversion with a dynamical (depleted versus non-depleted) ‘pump’ source mode which models the evaporating BH energy degree of freedom. We investigate both the short time (non-depleted pump) and long time (depleted pump) regimes of the quantum state and its impact on the Holevo channel capacity for commu.nicating information from the far past to the far future in the presence of Hawking radiation. The new feature introduced in this work is the coupling of the emitted Hawking radiation modes through the common BH ‘source pump’ mode which phenomenologically represents a quantized energy degree of freedom of the gravitational field. This (zero-dimensional) model serves as a simplified arena to explore BH particle production/evaporation and back-action effects under an explicitly unitary evolution that enforces quantized energy/particle conservation. Within our analogous quantum optical model we examine the entanglement between two emitted particle/anti-particle and anti-particle/particle pairs coupled via the BH evaporating ‘pump’ source. We also analytically and dynamically verify the ‘Page information time’ for our model, which refers to the conventionally held belief that the information in the BH radiation becomes significant after the BH has evaporated half its initial energy into the outgoing radiation. Lastly, we investigate the effect of BH particle production/evaporation on two modes in the exterior region of the BH event horizon that are initially maximally entangled, when one mode falls inward and interacts with the BH, and the other remains forever outside and non-interacting. [ABSTRACT FROM AUTHOR] AB - Copyright of Classical & Quantum Gravity is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM optics KW - PARTICLE emissions KW - HAWKING radiation KW - DEGREES of freedom KW - QUANTUM states KW - QUANTUM entanglement N1 - Accession Number: 101640558; Paul M Alsing 1; Email Address: paul.alsing@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Information Directorate, Rome, NY, USA; Source Info: 4/9/2015, Vol. 32 Issue 7, p1; Subject Term: QUANTUM optics; Subject Term: PARTICLE emissions; Subject Term: HAWKING radiation; Subject Term: DEGREES of freedom; Subject Term: QUANTUM states; Subject Term: QUANTUM entanglement; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0264-9381/32/7/075010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101640558&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cox, Richard M. AU - JungSoo Kim AU - Armentrout, P. B. AU - Bartlett, Joshua AU - VanGundy, Robert A. AU - Heaven, Michael C. AU - Ard, Shaun G. AU - Melko, Joshua J. AU - Shuman, Nicholas S. AU - Viggiano, Albert A. T1 - Evaluation of the exothermicity of the chemi-ionization reaction Sm + O → SmO+ + e-. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2015/04/07/ VL - 142 IS - 13 M3 - Article SP - 1 EP - 11 PB - American Institute of Physics SN - 00219606 AB - The exothermicity of the chemi-ionization reaction Sm + O → SmO+ + e- has been re-evaluated through the combination of several experimental methods. The thermal reactivity (300-650 K) of Sm+ and SmO+ with a range of species measured using a selected ion flow tube-mass spectrometer apparatus is reported and provides limits for the bond strength of SmO+, 5.661 eV ≤ D0(Sm+-O) ≤ 6.500 eV. A more precise value is measured to be 5.725 ± 0.07 eV, bracketed by the observed reactivity of Sm+ and SmO+ with several species using a guided ion beam tandem mass spectrometer (GIBMS). Combined with the established Sm ionization energy (IE), this value indicates an exothermicity of the title reaction of 0.08 ± 0.07 eV, ~0.2 eV smaller than previous determinations. In addition, the ionization energy of SmO has been measured by resonantly enhanced two-photon ionization and pulsed-field ionization zero kinetic energy photoelectron spectroscopy to be 5.7427 ± 0.0006 eV, significantly higher than the literature value. Combined with literature bond energies of SmO, this value indicates an exothermicity of the title reaction of 0.14 ± 0.17 eV, independent from and in agreement with the GIBMS result presented here. The evaluated thermochemistry also suggests that D0(SmO) = 5.83 ± 0.07 eV, consistent with but more precise than the literature values. Implications of these results for interpretation of chemical release experiments in the thermosphere are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXOTHERMIC reactions KW - IONIZATION (Atomic physics) KW - CHEMICAL reactions KW - SAMARIUM KW - SPECTROMETERS KW - BOND strengths N1 - Accession Number: 102027872; Cox, Richard M. 1 JungSoo Kim 1 Armentrout, P. B. 1; Email Address: armentrout@chem.utah.edu Bartlett, Joshua 2 VanGundy, Robert A. 2 Heaven, Michael C. 2; Email Address: mheaven@emory.edu Ard, Shaun G. 3 Melko, Joshua J. 4 Shuman, Nicholas S. 3 Viggiano, Albert A. 3; Email Address: albert.viggiano@us.af.mil; Affiliation: 1: Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, USA 2: Department of Chemistry, Emory University, Atlanta, Georgia 30322, USA 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, Albuquerque, New Mexico 87117, USA 4: Department of Chemistry, University of North Florida, Jacksonville, Florida 32224, USA; Source Info: 2015, Vol. 142 Issue 13, p1; Subject Term: EXOTHERMIC reactions; Subject Term: IONIZATION (Atomic physics); Subject Term: CHEMICAL reactions; Subject Term: SAMARIUM; Subject Term: SPECTROMETERS; Subject Term: BOND strengths; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 11p; Illustrations: 1 Diagram, 3 Charts, 9 Graphs; Document Type: Article L3 - 10.1063/1.4916396 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102027872&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Juliano, Thomas J. AU - Borg, Matthew P. AU - Schneider, Steven P. T1 - Quiet Tunnel Measurements of HIFiRE-5 Boundary-Layer Transition. JO - AIAA Journal JF - AIAA Journal Y1 - 2015/04// VL - 53 IS - 4 M3 - Article SP - 832 EP - 846 SN - 00011452 AB - The Hypersonic International Flight Research Experimentation (HIFiRE) program is a hypersonic flight test program executed by the Air Force Research Laboratory and Australian Defence Science and Technology Organisation. The principal goal of HIFiR E flight five is to measure hypersonic boundary-layer transition on a three-dimensional body. The HIFiRE flight tests are supported by a ground test campaign; this paper presents measurements of heat flux and boundary-layer transition in the Boeing/AFOSR Mach-6 Quiet Tunnel. This facility has been developed to provide quiet flow at high Reynolds number, with low noise levels comparable to flight. This tunnel's good optical access enabled global measurement of the heat flux by means of temperature-sensitive paint. Two modes of transition were observed: transition along the centerline, suspected to arise from the amplification of second-mode waves in the boundary layer, and transition roughly halfway between the centerline and leading edges, probably due to the breakdown of crossflow vortices. Reducing the noise level from conventional to quiet substantially delayed both transition modes. Increasing the angle of attack from 0 to 4 deg delayed the crossflow transition mode on the windward side. Transition moved forward as freestream unit Reynolds number increased from 2.6 ⋅ 106/m to 11.9 106/m. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERSONICS KW - RESEARCH KW - HYPERSONIC aerodynamics KW - AIRPLANES -- Flight testing KW - HYPERSONIC planes KW - BOUNDARY layer (Aerodynamics) KW - REYNOLDS number N1 - Accession Number: 102613503; Juliano, Thomas J. 1 Borg, Matthew P. 1 Schneider, Steven P. 2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542 2: Purdue University, West Lafayette, Indiana 47907-1282; Source Info: Apr2015, Vol. 53 Issue 4, p832; Subject Term: HYPERSONICS; Subject Term: RESEARCH; Subject Term: HYPERSONIC aerodynamics; Subject Term: AIRPLANES -- Flight testing; Subject Term: HYPERSONIC planes; Subject Term: BOUNDARY layer (Aerodynamics); Subject Term: REYNOLDS number; NAICS/Industry Codes: 488190 Other Support Activities for Air Transportation; Number of Pages: 15p; Document Type: Article L3 - 10.2514/1.J053189 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102613503&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - BRAMSCHREIBER, TERRY AU - WESTMORELAND, DAVID T1 - Preparing Students For Science in the Face of Social Controversy. JO - American Biology Teacher (University of California Press) JF - American Biology Teacher (University of California Press) Y1 - 2015/04// VL - 77 IS - 4 M3 - Article SP - 284 EP - 288 SN - 00027685 AB - Science educators often teach topics that are largely resolved in the scientific community yet remain controversial in broader society. In such cases, students may perceive the teacher as biased. We present two exercises that foster more objective learning about the scientific underpinnings of socially controversial topics. The first exercise clarifies why the scientific resolution of an issue does not necessarily align with social perception. The second applies this concept by having students discriminate science-based claims from other claims. [ABSTRACT FROM AUTHOR] AB - Copyright of American Biology Teacher (University of California Press) is the property of University of California Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCIENCE -- Study & teaching KW - SOCIAL perception KW - PSEUDOSCIENCE KW - RATIONALISM KW - EMPIRICISM KW - STUDENTS -- Psychology KW - empiricism KW - Nature of science KW - pseudoscience KW - rationalism KW - skepticism N1 - Accession Number: 101882073; BRAMSCHREIBER, TERRY 1; Email Address: terry.bramschreiber@asd20.org WESTMORELAND, DAVID 2; Email Address: david.westmoreland@usafa.edu; Affiliation: 1: Administrator Discovery Canyon Campus, 1810 North Gate Blvd., Colorado Springs, CO 80921 2: Professor of Biology, United States Air Force Academy, 2355 Faculty Dr., USAFA, CO 80908; Source Info: Apr2015, Vol. 77 Issue 4, p284; Subject Term: SCIENCE -- Study & teaching; Subject Term: SOCIAL perception; Subject Term: PSEUDOSCIENCE; Subject Term: RATIONALISM; Subject Term: EMPIRICISM; Subject Term: STUDENTS -- Psychology; Author-Supplied Keyword: empiricism; Author-Supplied Keyword: Nature of science; Author-Supplied Keyword: pseudoscience; Author-Supplied Keyword: rationalism; Author-Supplied Keyword: skepticism; Number of Pages: 5p; Document Type: Article L3 - 10.1525/abt.2015.77.4.8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101882073&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parco, James E. AU - Levy, David A. AU - Spears, Sarah R. T1 - Transgender Military Personnel in the Post-DADT Repeal Era: A Phenomenological Study. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 2015/04// VL - 41 IS - 2 M3 - Article SP - 221 EP - 242 SN - 0095327X AB - This study is the first to systematically inquire into the lives of transgender men and women currently serving across the branches of the US military in the post-“Don’t Ask, Don’t Tell” (DADT) repeal era. We employed an interview protocol from a stratified convenience sample (n = 14) of clandestinely serving active duty, guard and reserve military members from the US Army, Navy, Air Force, and Marine Corps who self-identified as transgender or transsexual. Using phenomenology as a methodological foundation, we present a revelatory case study based on lived experiences from firsthand accounts furthering the collective understanding of gender dysphoria in a contemporary military context. [ABSTRACT FROM PUBLISHER] AB - Copyright of Armed Forces & Society (0095327X) is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSGENDER military personnel KW - RESEARCH KW - DON'T Ask, Don't Tell (Military policy) KW - GAY military personnel -- United States -- Government policy KW - LGBT people in the military -- Law & legislation KW - GENDER dysphoria KW - gender dysphoria KW - LGBT KW - military KW - phenomenology KW - transgender N1 - Accession Number: 101601585; Parco, James E. 1 Levy, David A. 2 Spears, Sarah R. 3; Affiliation: 1: Colorado College, Colorado Springs, CO, USA jim.parco@coloradocollege.edu 2: US Air Force Academy, Colorado Springs, CO, USA 3: American Civil Liberties Union of Colorado, Denver, CO, USA; Source Info: Apr2015, Vol. 41 Issue 2, p221; Subject Term: TRANSGENDER military personnel; Subject Term: RESEARCH; Subject Term: DON'T Ask, Don't Tell (Military policy); Subject Term: GAY military personnel -- United States -- Government policy; Subject Term: LGBT people in the military -- Law & legislation; Subject Term: GENDER dysphoria; Author-Supplied Keyword: gender dysphoria; Author-Supplied Keyword: LGBT; Author-Supplied Keyword: military; Author-Supplied Keyword: phenomenology; Author-Supplied Keyword: transgender; Number of Pages: 22p; Document Type: Article; Full Text Word Count: 9709 L3 - 10.1177/0095327X14530112 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101601585&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 103788445 T1 - Neurologically-related sequelae associated with mild traumatic brain injury. AU - Webb, Timothy S. AU - Whitehead, Casserly R. AU - Wells, Timothy S. AU - Gore, Russell K. AU - Otte, Clifford N. Y1 - 2015/04// N1 - Accession Number: 103788445. Language: English. Entry Date: 20150415. Revision Date: 20160922. Publication Type: Journal Article; research; tables/charts. Journal Subset: Allied Health; Biomedical; Europe; Peer Reviewed; UK & Ireland. Special Interest: Military/Uniformed Services. Grant Information: Defense Center of Excellence for Psychological Health and Traumatic Brain Injury. NLM UID: 8710358. KW - Brain Injuries -- Complications KW - Brain Injuries -- Physiopathology KW - Postconcussion Syndrome -- Epidemiology -- United States KW - Epilepsy -- Epidemiology -- United States KW - Chronic Pain -- Epidemiology -- United States KW - Cognition Disorders -- Epidemiology -- United States KW - Sleep Disorders -- Epidemiology -- United States KW - Military Personnel KW - Human KW - Funding Source KW - Prospective Studies KW - Record Review KW - United States Air Force KW - Brain Injuries -- Classification KW - Cox Proportional Hazards Model KW - Comparative Studies KW - Clinical Information Systems KW - Outpatients KW - International Classification of Diseases KW - Socioeconomic Factors KW - Comorbidity KW - Confidence Intervals KW - Data Analysis Software KW - Descriptive Statistics KW - Chi Square Test KW - Male KW - Female KW - Adult KW - Middle Age KW - Kappa Statistic KW - United States SP - 430 EP - 437 JO - Brain Injury JF - Brain Injury JA - BRAIN INJ VL - 29 IS - 4 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - Objective: Mild traumatic brain injury (mTBI) accounts for more than 75% of traumatic brain injuries every year. This study examines the temporal association between non-blast mTBI and the onset of neurologic sequelae to illuminate risks of post-concussive syndrome, epilepsy and chronic pain. Methods: A large historical prospective study was conducted utilizing electronically-recorded demographic, medical and military-specific data for over half a million active duty US Air Force Airmen. This study utilized diagnostic codes to identify mTBI exposures, two control groups and three post-mTBI time periods. Adjusted hazard ratios (HRs) were calculated using Cox proportional hazards modelling. Results: HRs were higher when mTBI exposed Airmen were compared with the full cohort and lower when compared with the other injured group. When compared to the other injured group, mTBI was positively associated with epilepsy/recurrent seizure outcomes, post-concussive syndrome and pain disorders. HRs tended to be highest within the first 30 days and decreased over time. Conclusions: Findings support that mTBI may have a prolonged neurological impact. Findings are also likely generalizable to young adult populations with exposure to non-blast related mTBI, including civilians, as those included in this study were young adults with a high prevalence of recreational/sports and motor vehicle injuries. SN - 0269-9052 AD - Vulnerability Analysis Branch, Air Force Research Laboratory Wright-Patterson AFB, OH USA AD - Infoscitex Corporation Dayton, OH USA AD - Department of Neurology, Emory University School of Medicine Atlanta, GA USA AD - Plans and Programs Office, Defense Health Program Research Management Division, Wright-Patterson AFB, OH, USA U2 - PMID: 25541640. DO - 10.3109/02699052.2014.989904 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=103788445&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Kumar, Anurag AU - Maschmann, Matthew R. AU - Hodson, Stephen L. AU - Baur, Jeffery AU - Fisher, Timothy S. T1 - Carbon nanotube arrays decorated with multi-layer graphene-nanopetals enhance mechanical strength and durability. JO - Carbon JF - Carbon Y1 - 2015/04// VL - 84 M3 - Article SP - 236 EP - 245 SN - 00086223 AB - We report growth of a hierarchical nanostructure consisting of multi-layer graphene-petals decorating individual carbon nanotubes in a vertically aligned CNT array. The structure obtained by post-growth treatment of the CNT array in a microwave plasma chemical vapor deposition process leads to a remarkable increase in array stability, stiffness, elastic recovery and energy absorption capacity and a decrease in stress softening. Further, the change in properties can be tuned by controlling the petal growth time. For a 50 μm tall array, growth of graphene petals increases the buckling load and energy absorbed in load–unload cycles by a factor of about 60. The petal-coated CNT arrays also retain their morphology during solvent immersion and evaporation cycles, while arrays without petals coalesce into highly dense regions. The results open a new pathway towards tuning mechanical behavior of any arbitrary CNT array and also demonstrate the importance of structural hierarchy in tailoring the behavior of nanostructures. [ABSTRACT FROM AUTHOR] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - MULTILAYERS KW - GRAPHENE KW - STRENGTH of materials KW - DURABILITY KW - MICROWAVE plasmas KW - CHEMICAL vapor deposition N1 - Accession Number: 100512721; Kumar, Anurag 1,2 Maschmann, Matthew R. 3,4,5 Hodson, Stephen L. 1,2 Baur, Jeffery 4 Fisher, Timothy S. 1,2; Email Address: tsfisher@purdue.edu; Affiliation: 1: School of Mechanical Engineering, Purdue University, Lafayette, IN 47907, USA 2: Birck Nanotechnology Center, Purdue University, Lafayette, IN 47907, USA 3: Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO, USA 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright-Patterson Air Force Base, OH 45433, USA 5: Universal Technology Corporation, Beavercreek, OH 45432, USA; Source Info: Apr2015, Vol. 84, p236; Subject Term: CARBON nanotubes; Subject Term: MULTILAYERS; Subject Term: GRAPHENE; Subject Term: STRENGTH of materials; Subject Term: DURABILITY; Subject Term: MICROWAVE plasmas; Subject Term: CHEMICAL vapor deposition; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.carbon.2014.11.060 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100512721&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 109798174 T1 - Reliability and Validity Analyses of the Self-Management Questionnaire. AU - Sherman, Julie AU - Tarnow, Jay AU - Peacock, Walker AU - Walker, Jerry V. Y1 - 2015/04//Apr-Jun2015 N1 - Accession Number: 109798174. Language: English. Entry Date: 20150617. Revision Date: 20150923. Publication Type: Journal Article; questionnaire/scale; research; tables/charts. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Pediatric Care; Psychiatry/Psychology. Instrumentation: Self-Management Questionnaire, Third Edition (SMQ); Conners 3 (Conners). NLM UID: 8302769. KW - Self Regulation -- In Infancy and Childhood KW - Child Behavior Disorders -- Diagnosis KW - Diagnosis, Differential -- In Infancy and Childhood KW - Self Care -- In Infancy and Childhood KW - Human KW - Validation Studies KW - Instrument Validation KW - Private Practice KW - Factor Analysis KW - Attention Deficit Hyperactivity Disorder -- Diagnosis KW - Depression -- Diagnosis KW - Child Development Disorders, Pervasive -- Diagnosis KW - Child, Preschool KW - Diagnosis, Differential KW - Child KW - Adolescence KW - Male KW - Female KW - Southeastern United States KW - Urban Areas KW - Mental Health Services KW - Descriptive Statistics KW - Coefficient Alpha KW - Logistic Regression KW - Anxiety Disorders -- Diagnosis KW - Self Care KW - Reference Values KW - Questionnaires KW - Clinical Assessment Tools SP - 114 EP - 137 JO - Child & Family Behavior Therapy JF - Child & Family Behavior Therapy JA - CHILD FAM BEHAV THER VL - 37 IS - 2 PB - Taylor & Francis Ltd AB - The authors developed a parent-report measure to enhance findings for diagnoses and evaluations, and therefore, improve on the assessments currently being widely used for this purpose. Data were gathered on 322 clients (4–18 years old) seeking treatment at a private practice setting. Factor analysis revealed 18 subscales. Scores were internally consistent and distinct from other subscales. In addition, the questionnaire showed good diagnostic utility for depression, Oppositional Defiant Disorder (ODD), and Pervasive Developmental Disorder (PDD). This study provides sufficient evidence of the reliability and validity of the Self-Management Questionnaire (SMQ) to recommend its use for skills and needs assessment with children and adolescents. SN - 0731-7107 AD - Southeast Texas Behavioral Solutions, Beaumont, Texas, USA AD - Tarnow Center for Self-Management, Houston, Texas, USA AD - Langley Air Force Base, United States Air Force, Hampton, Virginia, USA DO - 10.1080/07317107.2015.1035987 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109798174&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Rankin, Brent A. AU - Ihme, Matthias AU - Gore, Jay P. T1 - Quantitative model-based imaging of mid-infrared radiation from a turbulent nonpremixed jet flame and plume. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2015/04// VL - 162 IS - 4 M3 - Article SP - 1275 EP - 1283 SN - 00102180 AB - Current understanding of turbulent reacting flows can be improved by novel quantitative comparisons using highly scalable visualization methods based on volume rendering of time-dependent mid-infrared intensities in the form of images with multiple view angles. In this work, the effects of radiation and buoyancy in a turbulent nonpremixed flame and plume are studied by quantitatively comparing measured and computed images of the mid-infrared radiation intensity. To this end, a turbulent nonpremixed jet flame (Reynolds number 15,200 and CH 4 /H 2 /N 2 fuel composition) is considered, representing a benchmark flame configuration of the International Workshop on Measurement and Computation of Turbulent Nonpremixed Flames (TNF Workshop). Quantitative images of the radiation intensity from the flame are acquired using a calibrated high-speed mid-infrared camera and band-pass filters. The camera and filters enable time-dependent measurements of radiation from water vapor and carbon dioxide over the entire flame length and beyond. Results of the solution to the radiative transfer equation are rendered in the form of images using scalar values from large eddy simulations (LES) and a narrowband radiation model. Planar images obtained from experiments and simulations for the radiation intensity display qualitatively comparable features, including localized regions of high and low intensity that are characteristic of turbulent flames. The quantitative comparison of the measured and computed temperature profiles and radiation intensities, particularly in the plume region downstream of the stoichiometric flame length, indicate that including radiation heat loss is important even for weakly radiating flames. The results demonstrate that quantitative experimental and model-based imaging of mid-infrared radiation intensity is useful for assessing the results of narrowband radiation and combustion models. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFRARED radiation KW - TURBULENCE KW - FLAME KW - PLUMES (Fluid dynamics) KW - BUOYANCY KW - Buoyancy KW - Flame radiation KW - Infrared imaging KW - Large eddy simulations KW - Non-intrusive measurements KW - Turbulent nonpremixed flame N1 - Accession Number: 101498479; Rankin, Brent A. 1,2; Email Address: brent.rankin.ctr@us.af.mil Ihme, Matthias 3 Gore, Jay P. 1; Affiliation: 1: School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA 2: National Research Council, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 3: Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, USA; Source Info: Apr2015, Vol. 162 Issue 4, p1275; Subject Term: INFRARED radiation; Subject Term: TURBULENCE; Subject Term: FLAME; Subject Term: PLUMES (Fluid dynamics); Subject Term: BUOYANCY; Author-Supplied Keyword: Buoyancy; Author-Supplied Keyword: Flame radiation; Author-Supplied Keyword: Infrared imaging; Author-Supplied Keyword: Large eddy simulations; Author-Supplied Keyword: Non-intrusive measurements; Author-Supplied Keyword: Turbulent nonpremixed flame; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.combustflame.2014.10.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101498479&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Henkels, Karen M. AU - Mallets, Elizabeth R. AU - Dennis, Patrick B. AU - Gomez-Cambronero, Julian T1 - S6K is a morphogenic protein with a mechanism involving Filamin-A phosphorylation and phosphatidic acid binding. JO - FASEB Journal JF - FASEB Journal Y1 - 2015/04// VL - 29 IS - 4 M3 - Article SP - 1299 EP - 1313 AB - Change of cell shape in vivo plays many roles that are central to life itself, such as embryonic development, inflammation, wound healing, and pathologic processes such as cancer metastasis. Nonetheless, the spatiotemporal mechanisms that control the concerted regulation of cell shape remain understudied. Here, we show that ribosomal S6K, which is normally considered a protein involved in protein translation, is a morphogenic protein. Its presence in cells alters the overall organization of the cell surface and cell circularity [(4π x area)/(perimeter)²] from 0.47±0.06 units in mock-treated cells to 0.09 ± 0.03 units in S6K-overexpressing macrophages causing stellation and arborization of cell shape. This effect was partially reversed in cells expressing a kinase-inactive S6K mutant and was fully reversed in cells silenced with small interference RNA. Equally important is that S6K is itself regulated by phospholipids, specifically phosphatidic acid, whereby 300 nM 1,2-dioleoyl-sn-glycero-3-phosphate (DOPA), but not the control 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC), binds directly to S6K and causes an ~2.9-fold increase in S6K catalytic activity. This was followed by an increase in Filamin A (FLNA) functionality as measured by phospho-FLNA (S2152) expression and by a subsequent elevation of actin nucleation. This reliance of S6K on phosphatidic acid (PA), a curvature-inducing phospholipid, explained the extra-large perimeter of cells that overexpressed S6K. Furthermore, the diversity of the response to S6K in several unrelated cell types (fibroblasts, leukocytes, and invasive cancer cells) that we report here indicates the existence of an underlying common mechanism in mammalian cells. This new signaling set, PA-S6K-FLNA-actin, sheds light for the first time into the morphogenic pathway of cytoskeletal structures that are crucial for adhesion and cell locomotion during inflammation and metastasis. [ABSTRACT FROM AUTHOR] AB - Copyright of FASEB Journal is the property of Federation of American Society for Experimental Biology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CYTOSKELETON KW - RESEARCH KW - CELL morphology KW - MORPHOGENESIS KW - BREAST cancer -- Research KW - CANCER cell growth KW - CANCER invasiveness KW - breast cancer KW - cell invasion KW - cell morphology KW - cytoskeleton signaling KW - morphogenesis N1 - Accession Number: 101914409; Henkels, Karen M. 1 Mallets, Elizabeth R. 1 Dennis, Patrick B. 2 Gomez-Cambronero, Julian 1; Email Address: julian.cambronero@wright.edu; Affiliation: 1: Wright State University School of Medicine, Department of Biochemistry and Molecular Biology, Dayton, Ohio, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, USA; Source Info: Apr2015, Vol. 29 Issue 4, p1299; Subject Term: CYTOSKELETON; Subject Term: RESEARCH; Subject Term: CELL morphology; Subject Term: MORPHOGENESIS; Subject Term: BREAST cancer -- Research; Subject Term: CANCER cell growth; Subject Term: CANCER invasiveness; Author-Supplied Keyword: breast cancer; Author-Supplied Keyword: cell invasion; Author-Supplied Keyword: cell morphology; Author-Supplied Keyword: cytoskeleton signaling; Author-Supplied Keyword: morphogenesis; Number of Pages: 15p; Document Type: Article L3 - 10.1096/fj.14-260992 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101914409&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lanzerotti, M. Y. AU - Cerny, C. L. AU - Martin, R. K. T1 - Theoretical phase calculation approach for N simultaneous signals. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2015/04// VL - 51 IS - 2 M3 - Article SP - 878 EP - 883 SN - 00189251 AB - This paper presents a generalized theoretical analysis of Tsui's phase measurement approach for the situation in which there are N simultaneous signals, where one of the signals is strong and N - 1 signals are weak. Signal amplitudes are normalized to the amplitude of the strongest signal. This approach provides the capability to extract values of the signal parameters. The capability for up to N = 4 simultaneous signals is desired in the design goal for electronic warfare receivers. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AMPLITUDE estimation KW - SIGNAL processing KW - PARAMETERS (Statistics) KW - COMPUTER simulation KW - ELECTRIC oscillators KW - Approximation methods KW - Local oscillators KW - Receivers KW - Sensors KW - Signal detection KW - Time-frequency analysis N1 - Accession Number: 103431687; Lanzerotti, M. Y. 1 Cerny, C. L. 2 Martin, R. K. 1; Affiliation: 1: Air Force Institute of Technology Wright-Patterson Air Force Base, OH, USA 2: Air Force Research Laboratory Sensors Directorate Wright-Patterson Air Force Base, OH, USA; Source Info: Apr2015, Vol. 51 Issue 2, p878; Subject Term: AMPLITUDE estimation; Subject Term: SIGNAL processing; Subject Term: PARAMETERS (Statistics); Subject Term: COMPUTER simulation; Subject Term: ELECTRIC oscillators; Author-Supplied Keyword: Approximation methods; Author-Supplied Keyword: Local oscillators; Author-Supplied Keyword: Receivers; Author-Supplied Keyword: Sensors; Author-Supplied Keyword: Signal detection; Author-Supplied Keyword: Time-frequency analysis; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TAES.2014.130687 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103431687&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dunik, Jindrich AU - Straka, Ondrej AU - Simandl, Miroslav AU - Blasch, Erik T1 - Random-point-based filters: analysis and comparison in target tracking. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2015/04// VL - 51 IS - 2 M3 - Article SP - 1403 EP - 1421 SN - 00189251 AB - This paper compares state estimation techniques for nonlinear stochastic dynamic systems, which are important for target tracking. Recently, several methods for nonlinear state estimation have appeared utilizing various random-point-based approximations for global filters (e.g., particle filter and ensemble Kalman filter) and local filters (e.g., Monte-Carlo Kalman filter and stochastic integration filters). A special emphasis is placed on derivations, algorithms, and commonalities of these filters. All filters described are put into a common framework, and it is proved that within a single iteration, they provide asymptotically equivalent results. Additionally, some deterministic-point-based filters (e.g., unscented Kalman filter, cubature Kalman filter, and quadrature Kalman filter) are shown to be special cases of a random-point-based filter. The paper demonstrates and compares the filters in three examples, a random variable transformation, re-entry vehicle tracking, and bearings-only tracking. The results show that the stochastic integration filter provides better accuracy than the Monte-Carlo Kalman filter and the ensemble Kalman filter with lower computational costs. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FILTERS & filtration KW - OBSERVABILITY (Control theory) KW - STOCHASTIC processes KW - KALMAN filtering KW - MONTE Carlo method KW - Approximation methods KW - Bayes methods KW - Covariance matrices KW - Kalman filters KW - Prediction algorithms KW - State estimation KW - Target tracking N1 - Accession Number: 103431729; Dunik, Jindrich 1 Straka, Ondrej 1 Simandl, Miroslav 1 Blasch, Erik 2; Affiliation: 1: University of West Bohemia Czech Republic 2: Air Force Research Laboratory Rome, NY, USA; Source Info: Apr2015, Vol. 51 Issue 2, p1403; Subject Term: FILTERS & filtration; Subject Term: OBSERVABILITY (Control theory); Subject Term: STOCHASTIC processes; Subject Term: KALMAN filtering; Subject Term: MONTE Carlo method; Author-Supplied Keyword: Approximation methods; Author-Supplied Keyword: Bayes methods; Author-Supplied Keyword: Covariance matrices; Author-Supplied Keyword: Kalman filters; Author-Supplied Keyword: Prediction algorithms; Author-Supplied Keyword: State estimation; Author-Supplied Keyword: Target tracking; Number of Pages: 19p; Document Type: Article L3 - 10.1109/TAES.2014.130136 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103431729&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morath, Christian P. AU - Cowan, Vincent M. AU - Treider, Laura A. AU - Jenkins, Geoffrey D. AU - Hubbs, John E. T1 - Proton Irradiation Effects on the Performance of III-V-Based, Unipolar Barrier Infrared Detectors. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2015/04// VL - 62 IS - 2 M3 - Article SP - 512 EP - 519 SN - 00189499 AB - An examination of the collective results from recent experiments quantifying the performance degradation rates of III-V-based, unipolar barrier infrared detectors with various designs and materials, cutoff wavelengths and operating conditions due to 63 MeV proton irradiation is presented. Empirical relationships were established between the radiation damage factors for dark current density, lateral optical collection length, and quantum efficiency and the inverse product of the detectors’ cutoff wavelength and operating temperature. Fitting the dark current density damage factor’s empirical relationship reflected these detectors’ tendency to remain diffusion-limited during irradiation, which was previously established using Arrhenius-analysis of the post-irradiation, temperature-dependent dark current measurements on each. Collectively, the results affirmed the performance degradation stemmed from a reduction of the minority carrier recombination lifetime via generation of additional defects by proton-induced displacement damage. For comparing detector’s radiation-tolerance, the results indicated that damage factors alone were not ideal, but their empirical relationships would serve as heuristics in this role. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Irradiation KW - Decomposition (Chemistry) KW - Protons KW - Infrared detectors KW - Carrier lifetime (Semiconductors) KW - Damage factor KW - Dark current KW - Degradation KW - Detectors KW - infrared detector KW - Materials KW - minority carrier lifetime KW - nBn KW - proton irradiation KW - Radiation effects KW - unipolar barrier detector N1 - Accession Number: 102086784; Morath, Christian P. 1; Cowan, Vincent M. 1; Treider, Laura A. 1; Jenkins, Geoffrey D. 1; Hubbs, John E. 2; Affiliations: 1: Air Force Research Lab, Kirtland AFB, NM, USA; 2: Infrared Radiation Effects Laboratory at the Air Force Research Laboratory, Kirtland AFB, NM, USA; Issue Info: Apr2015, Vol. 62 Issue 2, p512; Thesaurus Term: Irradiation; Thesaurus Term: Decomposition (Chemistry); Subject Term: Protons; Subject Term: Infrared detectors; Subject Term: Carrier lifetime (Semiconductors); Author-Supplied Keyword: Damage factor; Author-Supplied Keyword: Dark current; Author-Supplied Keyword: Degradation; Author-Supplied Keyword: Detectors; Author-Supplied Keyword: infrared detector; Author-Supplied Keyword: Materials; Author-Supplied Keyword: minority carrier lifetime; Author-Supplied Keyword: nBn; Author-Supplied Keyword: proton irradiation; Author-Supplied Keyword: Radiation effects; Author-Supplied Keyword: unipolar barrier detector; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TNS.2015.2392695 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=102086784&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - CONF AU - Shiffler, Don AU - Schumer, Joe AU - Jiang, Chungqi T1 - Guest Editorial: Special Issue on Plenary and Invited Papers from ICOPS-BEAMS 2014. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2015/04//Apr2015 Part 1 VL - 43 IS - 4 M3 - Proceeding SP - 913 EP - 913 SN - 00933813 AB - The 41st IEEE International Conference on Plasma Science (ICOPS14) and the 20th IEEE International Conference on High-Power Particle Beams (Beams14) combined for the first time in 2014 as the IEEE ICOPS/Beams meeting. This scientific meeting took place from May 25 to May 29, 2014, in Washington, DC, at the historical Marriott Wardman Park hotel in Northwest DC. Participation included a broad range of scientific attendance, with a total of 566 researchers from 36 countries, with scientists from China, Russia, and Japan making the largest contribution to the international contingent. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA (Ionized gases) KW - PARTICLE beams KW - ENERGY density KW - CONGRESSES KW - Awards activities KW - Conferences KW - Engineering profession KW - Meetings KW - Particle beams KW - Plasmas KW - Special issues and sections KW - INSTITUTE of Electrical & Electronics Engineers Inc. -- Congresses KW - BARKER, Robert N1 - Accession Number: 102120448; Shiffler, Don 1 Schumer, Joe 2 Jiang, Chungqi 3; Affiliation: 1: ICOPS 2014 Technical Chair Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, NM, USA 2: ICOPS 2014 General Chair, Naval Research Laboratory, Code 6770, Washington, DC, USA 3: Frank Reidy Center for Bioelectrics, Old Dominion University, Norfolk, VA, USA; Source Info: Apr2015 Part 1, Vol. 43 Issue 4, p913; Subject Term: PLASMA (Ionized gases); Subject Term: PARTICLE beams; Subject Term: ENERGY density; Subject Term: CONGRESSES; Author-Supplied Keyword: Awards activities; Author-Supplied Keyword: Conferences; Author-Supplied Keyword: Engineering profession; Author-Supplied Keyword: Meetings; Author-Supplied Keyword: Particle beams; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Special issues and sections; Company/Entity: INSTITUTE of Electrical & Electronics Engineers Inc. -- Congresses DUNS Number: 001651855; People: BARKER, Robert; Number of Pages: 1p; Document Type: Proceeding L3 - 10.1109/TPS.2015.2419411 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102120448&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Cole T1 - Space Age Conceptions of Time in Alfred Hitchcock's Vertigo. JO - Interdisciplinary Humanities JF - Interdisciplinary Humanities Y1 - 2015///Spring2015 VL - 32 IS - 1 M3 - Article SP - 79 EP - 89 PB - Humanities Education & Research Association SN - 10566139 AB - The article offers a criticism about the space age conceptions of time in the film "Vertigo" by film director Alfred Hitchcock. The author talks about the most distinctive qualities of Hitchcock's 1958 film. He also tackles the idea that the film is an adaptation of Ambrose Bierce's short story "An Occurrence at Owl Creek Bridge." KW - MOTION picture producers & directors KW - MOTION pictures -- Production & direction KW - HITCHCOCK, Alfred, 1899-1980 KW - BIERCE, Ambrose, 1842-ca. 1914 KW - OCCURRENCE at Owl Creek Bridge, An (Short story) N1 - Accession Number: 108356922; Smith, Cole 1; Affiliation: 1: Missile Officer--United States Air Force; Source Info: Spring2015, Vol. 32 Issue 1, p79; Subject Term: MOTION picture producers & directors; Subject Term: MOTION pictures -- Production & direction; Reviews & Products: OCCURRENCE at Owl Creek Bridge, An (Short story); NAICS/Industry Codes: 711512 Independent actors, comedians and performers; NAICS/Industry Codes: 711510 Independent Artists, Writers, and Performers; NAICS/Industry Codes: 512110 Motion Picture and Video Production; People: HITCHCOCK, Alfred, 1899-1980; People: BIERCE, Ambrose, 1842-ca. 1914; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108356922&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 109780649 T1 - Bilateral lower extremity inflammatory lymphedema in Air Force basic trainees: clinical and epidemiologic study of a new disease entity. AU - Fajardo, Kevin A AU - Keller, Patrick AU - Kobayashi, Todd AU - Hivnor, Chad M AU - Webber, Bryant J AU - Federinko, Susan P AU - Tchandja, Juste Y1 - 2015/04// N1 - Accession Number: 109780649. Language: English. Entry Date: 20150619. Revision Date: 20160526. Publication Type: journal article; research. Journal Subset: Biomedical; USA. NLM UID: 101589530. KW - Gravitation KW - Inflammation -- Etiology KW - Lymphedema -- Etiology KW - Military Personnel KW - Female KW - Human KW - Incidence KW - Inflammation -- Epidemiology KW - Inflammation -- Pathology KW - Lower Extremity KW - Lymphedema -- Epidemiology KW - Lymphedema -- Pathology KW - Male KW - Risk Factors KW - Shoes KW - Time Factors KW - United States SP - 395 EP - 400 JO - JAMA Dermatology JF - JAMA Dermatology JA - JAMA DERMATOL VL - 151 IS - 4 CY - Chicago, Illinois PB - American Medical Association AB - Importance: This observational study characterizes a new clinical condition identified in 55 military trainees.Objective: To determine the incidence and underlying cause of bilateral lower extremity inflammatory lymphedema in Air Force basic trainees.Design, Setting, and Participants: An observational study was conducted at Lackland Air Force Base in San Antonio, Texas. Participants included 14 243 Air Force basic trainees who entered training between September 2011 and January 2012 and the 55 trainees (0.4%) who developed bilateral lower extremity inflammatory lymphedema that occurred during the 8½-week basic training course. Two modifiable risk factors were evaluated: vaccine reaction and newly issued military footwear (combat boots and boot socks).Interventions: During November 2011, all new trainees wore only white socks and running shoes rather than the issued military footwear. During December 2011 and January 2012, the scheduled administration of tetanus/diphtheria/acellular pertussis and meningococcal vaccines, respectively, was delayed by 1 week for all new trainees. A full medical record review was conducted for every confirmed case of bilateral lower extremity inflammatory lymphedema.Main Outcomes and Measures: Identification of incident cases, symptom onset, antimicrobial treatment, immunization reaction, laboratory studies, specialty referral, and biopsy.Results: Fifty-four of the 55 incident cases (98%) of bilateral lower extremity inflammatory lymphedema occurred during the first 120 hours of training. Alterations in the timing of the military footwear used and selected vaccine administration had no effect on the incidence of new cases. Two participants (4%) experienced symptom onset before receipt of the vaccines. Oral antimicrobial medications were not found to speed symptom resolution compared with conservative treatment measures (P = .34). One incident case was diagnosed as leukocytoclastic vasculitis by tissue examination.Conclusions and Relevance: Multiple training-related risk factors were ruled out as sources of bilateral lower extremity inflammatory lymphedema. Cases are likely secondary to prolonged standing with resultant gravity-dependent venous congestion and inflammatory vasculitis. The potential roles of undiagnosed venous reflux disease and the military physical training environment in these cases remain to be elucidated. SN - 2168-6068 AD - 10th Aeromedical Squadron, US Air Force Academy, Colorado Springs, Colorado. AD - US Air Force Medical Support Agency, San Antonio, Texas. AD - 59th Medical Wing Dermatology Clinic, Joint Base San Antonio, Lackland Air Force Base, San Antonio, Texas. AD - 559th Medical Operations Squadron, Joint Base San Antonio, Lackland Air Force Base, San Antonio, Texas. U2 - PMID: 25607253. DO - 10.1001/jamadermatol.2014.3794 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109780649&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Lan, Yucheng AU - Lin, Feng AU - Li, Yang AU - Dias, Yasmin AU - Wang, Hui AU - Liu, Yuan AU - Yang, Zhen AU - Zhou, Haiqing AU - Lu, Yalin AU - Bao, Jiming AU - Ren, Zhifeng AU - Crimp, Martin A. T1 - Gallium nitride porous microtubules self-assembled from wurtzite nanorods. JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2015/04// VL - 415 M3 - Article SP - 139 EP - 145 SN - 00220248 AB - Wurtzite gallium nitride microscale tubules were synthesized through chemical vapor deposition method. The tubules were self-assembled from nanorods without any templates. The self-assemblies were up to 100 μm long and 10 μm in diameter. The tubules were porous. The unique structures of the tubules caused red-shifts of Raman modes and yellow band in photoluminescence spectra. A possible growth mechanism of the porous microtubules was proposed based on experimental observations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - MICROTUBULES KW - POROUS materials KW - MOLECULAR self-assembly KW - CHEMICAL vapor deposition KW - WURTZITE KW - NANORODS KW - A1. Crystal morphology KW - A1. Growth models KW - A1. Low dimensional structures KW - A1. Nanostructures KW - B2. Semiconducting III–V materials N1 - Accession Number: 101036695; Lan, Yucheng 1,2; Email Address: yucheng.lan@morgan.edu Lin, Feng 3; Email Address: linf@pku.edu.cn Li, Yang 4 Dias, Yasmin 1 Wang, Hui 2 Liu, Yuan 2 Yang, Zhen 2 Zhou, Haiqing 2 Lu, Yalin 5 Bao, Jiming 4 Ren, Zhifeng 2 Crimp, Martin A. 6; Affiliation: 1: Department of Physics and Engineering Physics, Morgan State University, Baltimore, MD 21251, USA 2: Department of Physics and Texas Center for Superconductivity, University of Houston, Houston, TX 77024, USA 3: School of Physics, State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871, China 4: Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204, USA 5: Laser Optics Research Center, US Air Force Academy, Colorado Springs, CO 80840, USA 6: Department of Chemical Engineering and Material Sciences, Michigan State University, East Lansing, MI 48824, USA; Source Info: Apr2015, Vol. 415, p139; Subject Term: GALLIUM nitride; Subject Term: MICROTUBULES; Subject Term: POROUS materials; Subject Term: MOLECULAR self-assembly; Subject Term: CHEMICAL vapor deposition; Subject Term: WURTZITE; Subject Term: NANORODS; Author-Supplied Keyword: A1. Crystal morphology; Author-Supplied Keyword: A1. Growth models; Author-Supplied Keyword: A1. Low dimensional structures; Author-Supplied Keyword: A1. Nanostructures; Author-Supplied Keyword: B2. Semiconducting III–V materials; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jcrysgro.2014.12.037 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101036695&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vishwakarma, Vinod AU - Sinha, Alok AU - Bhartiya, Yasharth AU - Brown, Jeffery M. T1 - Modified Modal Domain Analysis of a Bladed Rotor Using Coordinate Measurement Machine Data on Geometric Mistuning. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2015/04// VL - 137 IS - 4 M3 - Article SP - 1 EP - 8 SN - 07424795 AB - Modified modal domain analysis (MMDA), a reduced order modeling technique, is applied to a geometrically mistimed integrally bladed rotor to obtain its natural frequencies. mode shapes, and forced response. The geometric mistuning of blades is described in terms of proper orthogonal decomposition (POD) of the coordinate measurement machine (CMM) data. Results from MMDA are compared to those from the full (360 deg) rotor ansys model. It is found that the MMDA can accurately predict natural frequencies, mode shapes, and forced response. The effects of the number of POD features and the number of tuned modes used as bases for model reduction are examined. Results from frequency mistuning approaches, fundamental mistuning model (FMM) and subset of nominal modes (SNM), are also generated and compared to those from full (360 deg) rotor ansys model. It is clearly seen that FMM and SNM are unable to yield accurate results whereas MMDA yields highly accurate results. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JET engines KW - TUNING (Machinery) KW - RESEARCH KW - TRANSONIC aerodynamics KW - ROTORS -- Dynamics KW - PROPER orthogonal decomposition KW - BLADES N1 - Accession Number: 102473516; Vishwakarma, Vinod 1; Email Address: vinod.vish@gmail.com Sinha, Alok 1; Email Address: axs22@psu.edu Bhartiya, Yasharth 2; Email Address: yasharth@gmail.com Brown, Jeffery M. 3; Email Address: jeffrey.brown.70@us.af.mil; Affiliation: 1: Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802 2: ANSYS, Inc., Canonsburg, PA 15317 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433; Source Info: Apr2015, Vol. 137 Issue 4, p1; Subject Term: JET engines; Subject Term: TUNING (Machinery); Subject Term: RESEARCH; Subject Term: TRANSONIC aerodynamics; Subject Term: ROTORS -- Dynamics; Subject Term: PROPER orthogonal decomposition; Subject Term: BLADES; Number of Pages: 8p; Document Type: Article L3 - 10.1115/1.4028615 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102473516&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brown, Joel N. T1 - The Bombers and the Bombed: Allied Air War over Europe, 1940–1945. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2015/04// VL - 14 IS - 1 M3 - Book Review SP - 101 EP - 102 PB - Routledge SN - 15027570 KW - BOMBERS (Airplanes) KW - NONFICTION KW - OVERY, Richard KW - BOMBERS & the Bombed: Allied Air War Over Europe 1940-1945, The (Book) N1 - Accession Number: 102702560; Brown, Joel N. 1; Affiliation: 1: Department of Philosophy, US Air Force Academy Colorado Springs, CO, USA; Source Info: Apr2015, Vol. 14 Issue 1, p101; Subject Term: BOMBERS (Airplanes); Subject Term: NONFICTION; Reviews & Products: BOMBERS & the Bombed: Allied Air War Over Europe 1940-1945, The (Book); People: OVERY, Richard; Number of Pages: 2p; Document Type: Book Review L3 - 10.1080/15027570.2015.1033889 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102702560&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pelser, Adam C. T1 - The Emotions: A Philosophical Introduction. JO - Journal of Moral Philosophy JF - Journal of Moral Philosophy Y1 - 2015/04// VL - 12 IS - 2 M3 - Book Review SP - 239 EP - 242 SN - 17404681 KW - EMOTIONS (Philosophy) KW - NONFICTION KW - DEONNA, Julien A. KW - TERONI, Fabrice KW - EMOTIONS: A Philosophical Introduction, The (Book) N1 - Accession Number: 101865425; Pelser, Adam C. 1; Email Address: adam.pelser@usafa.edu; Affiliation: 1: United States Air Force Academy; Source Info: 2015, Vol. 12 Issue 2, p239; Subject Term: EMOTIONS (Philosophy); Subject Term: NONFICTION; Reviews & Products: EMOTIONS: A Philosophical Introduction, The (Book); People: DEONNA, Julien A.; People: TERONI, Fabrice; Number of Pages: 4p; Document Type: Book Review L3 - 10.1163/17455243-01202003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101865425&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eliasson, B. AU - Milikh, G. AU - Shao, X. AU - Mishin, E. V. AU - Papadopoulos, K. T1 - Incidence angle dependence of Langmuir turbulence and artificial ionospheric layers driven by high-power HF-heating. JO - Journal of Plasma Physics JF - Journal of Plasma Physics Y1 - 2015/04// VL - 81 IS - 2 M3 - Article SP - N.PAG00 SN - 00223778 AB - We have numerically investigated the development of strong Langmuir turbulence (SLT) and associated electron acceleration at different angles of incidence of ordinary (O) mode pump waves. For angles of incidence within the Spitze cone, the turbulence initially develops within the first maximum of the Airy pattern near the plasma resonance altitude. After a few milliseconds, the turbulent layer shifts downwards by about 1 km. For injections outside the Spitze region, the turning point of the pump wave is at lower altitudes. Yet, an Airy-like pattern forms here, and the turbulence development is quite similar to that for injections within the Spitze. SLT leads to the acceleration of 10–20 eV electrons that ionize the neutral gas thereby creating artificial ionospheric layers. Our numerical modeling shows that most efficient electron acceleration and ionization occur at angles between the magnetic and geographic zenith, where SLT dominates over weak turbulence. Possible effects of the focusing of the electromagnetic beam on magnetic field-aligned density irregularities and the finite heating beam width at the magnetic zenith are also discussed. The results have relevance to ionospheric heating experiments using ground-based, high-power radio transmitters to heat the overhead plasma, where recent observations of artificial ionization layers have been made. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Plasma Physics is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON accelerators KW - PLASMA frequencies KW - TURBULENCE KW - RADIO transmitters & transmission KW - IONOSPHERIC plasma KW - MAGNETIC fields N1 - Accession Number: 101807565; Eliasson, B. 1,2 Milikh, G. 1 Shao, X. 1 Mishin, E. V. 3 Papadopoulos, K. 1; Affiliation: 1: Departments of Physics and Astronomy, University of Maryland, College Park, Maryland, USA 2: SUPA, Physics Department, University of Strathclyde, Glasgow, Scotland, UK 3: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, Albuquerque, NM, USA; Source Info: Apr2015, Vol. 81 Issue 2, pN.PAG00; Subject Term: ELECTRON accelerators; Subject Term: PLASMA frequencies; Subject Term: TURBULENCE; Subject Term: RADIO transmitters & transmission; Subject Term: IONOSPHERIC plasma; Subject Term: MAGNETIC fields; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; Number of Pages: 1p; Document Type: Article L3 - 10.1017/S0022377814000968 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101807565&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Merriam, Eric1,2 T1 - NON-UNIFORM JUSTICE: AN EQUAL PROTECTION ANALYSIS OF VETERANS TREATMENT COURTS' EXCLUSIONARY QUALIFICATION REQUIREMENTS. JO - Mississippi Law Journal JF - Mississippi Law Journal J1 - Mississippi Law Journal PY - 2015/04// Y1 - 2015/04// VL - 84 IS - 3 CP - 3 M3 - Article SP - 685 EP - 745 SN - 00266280 AB - The article presents an equal protection analysis of the exclusionary qualification requirements off the Veterans Treatment Courts in the U.S. KW - Equal rights -- United States KW - Veterans -- Services for -- United States KW - United States. Court of Appeals for Veterans Claims N1 - Accession Number: 102476732; Authors:Merriam, Eric 1,2; Affiliations: 1: Lieutenant Colonel, United States Air Force; 2: Assistant Professor of Law, United States Air Force Academy; Subject: Equal rights -- United States; Subject: United States. Court of Appeals for Veterans Claims; Subject: Veterans -- Services for -- United States; Number of Pages: 61p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=102476732&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR AU - Stevans, Joel M . AU - Bise, Christopher G. AU - McGee, John C. AU - Miller, Debora L. AU - Rockar Jr., Paul AU - Delitto, Anthony T1 - Knowledge Translation and Implementation Special Series. Evidence-Based Practice Implementation: Case Report of the Evolution of a Quality Improvement Program in a Multicenter Physical Therapy Organization. JO - Physical Therapy JF - Physical Therapy Y1 - 2015/04// VL - 95 IS - 4 M3 - Article SP - 588 EP - 599 PB - American Physical Therapy Association SN - 00319023 AB - Background and Purpose. Our nation's suboptimal health care quality and unsustainable costs can be linked to the failure to implement evidence-based interventions. Implementation is the bridge between the decision to adopt a strategy and its sustained use in practice. The purpose of this case report is threefold: (1) to outline the historical implementation of an evidence-based quality improvement project, (2) to describe the program's future direction using a systems perspective to identify implementation barriers, and (3) to provide implications for the profession as it works toward closing the evidence-to-practice gap. Case Description . The University of Pittsburgh Medical Center (UPMC) Centers for Rehab Services is a large, multicenter physical therapy organization. In 2005, they implemented a Low Back Initiative utilizing evidence-based protocols to guide clinical decision making. Outcomes. The initial implementation strategy used a multifaceted approach. Formative evaluations were used repeatedly to identify barriers to implementation. Barriers may exist outside the organization, they can be created internally, they may result from personnel, or they may be a direct function of the research evidence. Since the program launch, 3 distinct improvement cycles have been utilized to address identified implementation barriers. Discussion. Implementation is an iterative process requiring evaluation, measurement, and refinement. During this period, behavior change is actualized as clinicians become increasingly proficient and committed to their use of new evidence. Successfully incorporating evidence into routine practice requires a systems perspective to account for the complexity of the clinical setting. The value the profession provides can be enhanced by improving the implementation of evidence-based strategies. Achieving this outcome will require a concerted effort in all areas of the profession. New skills will be needed by leaders, researchers, managers, and clinicians. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Therapy is the property of American Physical Therapy Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICAL therapy KW - AUDITING KW - BACKACHE KW - MEDICAL care -- Evaluation KW - QUALITY assurance KW - EVIDENCE-based medicine KW - HUMAN services programs -- Evaluation KW - SOCIETIES, etc. N1 - Accession Number: 102061956; Stevans, Joel M . 1; Email Address: jms36B@pitt.edu Bise, Christopher G. 2 McGee, John C. 3 Miller, Debora L. 2,4 Rockar Jr., Paul 5 Delitto, Anthony 2,5; Affiliation: 1: Department of Physical Therapy, University of Pittsburgh, 100 Technology Dr, Ste 210, Pittsburgh, PA 15219 (USA) 2: Department of Physical Therapy, University of Pittsburgh 3: Department of Biology, US Air Force Academy, Colorado Springs, Colorado. 4: University of Pittsburgh Medical Center (UPMC) Centers for Rehab Services, Pittsburgh, Pennsylvania. 5: UPMC Centers for Rehab Services.; Source Info: Apr2015, Vol. 95 Issue 4, p588; Subject Term: PHYSICAL therapy; Subject Term: AUDITING; Subject Term: BACKACHE; Subject Term: MEDICAL care -- Evaluation; Subject Term: QUALITY assurance; Subject Term: EVIDENCE-based medicine; Subject Term: HUMAN services programs -- Evaluation; Subject Term: SOCIETIES, etc.; Number of Pages: 12p; Document Type: Article L3 - 10.2522/ptj.20130541 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102061956&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 103788573 T1 - Knowledge Translation and Implementation Special Series. Evidence-Based Practice Implementation: Case Report of the Evolution of a Quality Improvement Program in a Multicenter Physical Therapy Organization. AU - Stevans, Joel M . AU - Bise, Christopher G. AU - McGee, John C. AU - Miller, Debora L. AU - Rockar Jr., Paul AU - Delitto, Anthony Y1 - 2015/04// N1 - Accession Number: 103788573. Language: English. Entry Date: 20150414. Revision Date: 20150820. Publication Type: Journal Article; case study; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. Special Interest: Evidence-Based Practice; Physical Therapy. NLM UID: 0022623. KW - Quality Improvement KW - Program Evaluation KW - Low Back Pain KW - Physical Therapy Practice, Evidence-Based KW - Physical Therapy -- Organizations KW - Outcomes (Health Care) KW - Audit KW - Feedback SP - 588 EP - 599 JO - Physical Therapy JF - Physical Therapy JA - PHYS THER VL - 95 IS - 4 CY - Alexandria, Virginia PB - American Physical Therapy Association AB - Background and Purpose. Our nation's suboptimal health care quality and unsustainable costs can be linked to the failure to implement evidence-based interventions. Implementation is the bridge between the decision to adopt a strategy and its sustained use in practice. The purpose of this case report is threefold: (1) to outline the historical implementation of an evidence-based quality improvement project, (2) to describe the program's future direction using a systems perspective to identify implementation barriers, and (3) to provide implications for the profession as it works toward closing the evidence-to-practice gap. Case Description . The University of Pittsburgh Medical Center (UPMC) Centers for Rehab Services is a large, multicenter physical therapy organization. In 2005, they implemented a Low Back Initiative utilizing evidence-based protocols to guide clinical decision making. Outcomes. The initial implementation strategy used a multifaceted approach. Formative evaluations were used repeatedly to identify barriers to implementation. Barriers may exist outside the organization, they can be created internally, they may result from personnel, or they may be a direct function of the research evidence. Since the program launch, 3 distinct improvement cycles have been utilized to address identified implementation barriers. Discussion. Implementation is an iterative process requiring evaluation, measurement, and refinement. During this period, behavior change is actualized as clinicians become increasingly proficient and committed to their use of new evidence. Successfully incorporating evidence into routine practice requires a systems perspective to account for the complexity of the clinical setting. The value the profession provides can be enhanced by improving the implementation of evidence-based strategies. Achieving this outcome will require a concerted effort in all areas of the profession. New skills will be needed by leaders, researchers, managers, and clinicians. SN - 0031-9023 AD - Department of Physical Therapy, University of Pittsburgh, 100 Technology Dr, Ste 210, Pittsburgh, PA 15219 (USA) AD - Department of Physical Therapy, University of Pittsburgh AD - Department of Biology, US Air Force Academy, Colorado Springs, Colorado. AD - Department of Physical Therapy, University of Pittsburgh; University of Pittsburgh Medical Center (UPMC) Centers for Rehab Services, Pittsburgh, Pennsylvania. AD - UPMC Centers for Rehab Services. AD - Department of Physical Therapy, University of Pittsburgh; UPMC Centers for Rehab Services. DO - 10.2522/ptj.20130541 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=103788573&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Harvazinski, Matthew E. AU - Cheng Huang AU - Sankaran, Venkateswaran AU - Feldman, Thomas W. AU - Anderson, William E. AU - Merkle, Charles L. AU - Talley, Douglas G. T1 - Coupling between hydrodynamics, acoustics, and heat release in a self-excited unstable combustor. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2015/04// VL - 27 IS - 4 M3 - Article SP - 1 EP - 27 PB - American Institute of Physics SN - 10706631 AB - The unsteady gas dynamic field in a closed combustor is determined by the nonlinear interactions between chamber acoustics, hydrodynamics, and turbulent combustion that can energize these modes. These interactions are studied in detail using hybrid RANS/large eddy simulations (RANS = Reynolds Averaged Navier-Stokes) of a nonpremixed, high-pressure laboratory combustor that produces self-excited longitudinal instabilities. The main variable in the study is the relative acoustic length between the combustion chamber and the tube that injects oxidizer into the combustor. Assuming a half-wave (closed-closed) combustion chamber, the tube lengths approximately correspond to quarter-, 3/8-, and half-wave resonators that serve to vary the phasing between the acoustic modes in the tube and the combustion chamber. The simulation correctly predicts the relatively stable behavior measured with the shortest tube and the very unstable behavior measured with the intermediate tube. Unstable behavior is also predicted for the longest tube, a case for which bifurcated stability behavior was measured in the experiment. In the first (stable) configuration, fuel flows into the combustor uninterrupted, and heat release is spatially continuous with a flame that remains attached to the back step. In the second (unstable) configuration, a cyclic process is apparent comprising a disruption in the fuel flow, subsequent detachment of the flame from the back step, and accumulation of fuel in the recirculation zone that ignites upon arrival of a compression wave reflected from the downstream boundary of the combustion chamber. The third case (mixed stable/unstable) shares features with both of the other cases. The major difference between the two cases predicted to be unstable is that, in the intermediate length tube, a pressure wave reflection inside the tube pushes unburnt fuel behind the back step radially outward, leading to a post-coupled reignition mechanism, while in the case of the longest tube, the reignition is promoted by vortex convection and combustor-wall interaction. Other flow details indicated by the simulation include the relative phase between flow resonances in the tube and the combustor, increased mixing due to baroclinic torque, and the presence of an unsteady triple flame. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDRODYNAMICS KW - COMBUSTION chambers KW - GAS dynamics KW - NONLINEAR theories KW - LARGE eddy simulation models N1 - Accession Number: 102449015; Harvazinski, Matthew E. 1 Cheng Huang 2 Sankaran, Venkateswaran 1 Feldman, Thomas W. 2 Anderson, William E. 2 Merkle, Charles L. 2 Talley, Douglas G. 1; Affiliation: 1: Air Force Research Laboratory, Edwards AFB, California 93524, USA 2: Purdue University, West Lafayette, Indiana 47907, USA; Source Info: 2015, Vol. 27 Issue 4, p1; Subject Term: HYDRODYNAMICS; Subject Term: COMBUSTION chambers; Subject Term: GAS dynamics; Subject Term: NONLINEAR theories; Subject Term: LARGE eddy simulation models; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 562210 Waste treatment and disposal; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; Number of Pages: 27p; Document Type: Article L3 - 10.1063/1.4916673 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102449015&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morrison, J. T. AU - Chowdhury, E. A. AU - Frische, K. D. AU - Feister, S. AU - Ovchinnikov, V. M. AU - Nees, J. A. AU - Orban, C. AU - Freeman, R. R. AU - Roquemore, W. M. T1 - Backward-propagating MeV electrons from 1018W/cm² laser interactions with water. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2015/04// VL - 22 IS - 4 M3 - Article SP - 1 EP - 8 PB - American Institute of Physics SN - 1070664X AB - We present an experimental study of the generation of ~MeV electrons opposite to the direction of laser propagation following the relativistic interaction at normal incidence of a ~3 mJ, 1018 W/cm² short pulse laser with a flowing 30 μm diameter water column target. Faraday cup measurements record hundreds of pC charge accelerated to energies exceeding 120 keV, and energy-resolved measurements of secondary x-ray emissions reveal an x-ray spectrum peaking above 800 keV, which is significantly higher energy than previous studies with similar experimental conditions and more than five times the ~110 keV ponderomotive energy scale for the laser. We show that the energetic x-rays generated in the experiment result from backward-going, high-energy electrons interacting with the focusing optic, and vacuum chamber walls with only a small component of x-ray emission emerging from the target itself. We also demonstrate that the high energy radiation can be suppressed through the attenuation of the nanosecond-scale pre-pulse. These results are supported by 2D particle-in-cell simulations of the laser-plasma interaction, which exhibit beam-like backward-propagating MeV electrons. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON plasma KW - THEORY of wave motion KW - LASER beams KW - X-ray emission spectroscopy KW - COMPUTER simulation KW - PLASMA interactions N1 - Accession Number: 102449095; Morrison, J. T. 1 Chowdhury, E. A. 2,3 Frische, K. D. 4 Feister, S. 2,4; Email Address: feister.7@osu.edu Ovchinnikov, V. M. 4 Nees, J. A. 4,5 Orban, C. 2,4 Freeman, R. R. 2 Roquemore, W. M. 6; Affiliation: 1: National Research Council, Washington, District of Columbia 20001, USA 2: Department of Physics, Ohio State University, Columbus, Ohio 43210, USA 3: Intense Energy Solutions, LLC, Plain City, Ohio 43064, USA 4: Innovative Scientific Solutions, Inc., Dayton Ohio 45459, USA 5: Center for Ultra-fast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA 6: Air Force Research Laboratory, Dayton, Ohio 45433, USA; Source Info: 2015, Vol. 22 Issue 4, p1; Subject Term: ELECTRON plasma; Subject Term: THEORY of wave motion; Subject Term: LASER beams; Subject Term: X-ray emission spectroscopy; Subject Term: COMPUTER simulation; Subject Term: PLASMA interactions; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.4916493 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102449095&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - S F Adams AU - J E Caplinger AU - B S Sommers T1 - Spatial temperature mapping of an atmospheric microdischarge using ultraviolet Rayleigh scatter imaging. JO - Plasma Sources Science & Technology JF - Plasma Sources Science & Technology Y1 - 2015/04// VL - 24 IS - 2 M3 - Article SP - 1 EP - 1 SN - 09630252 AB - Spatially resolved temperature measurements within a microdischarge in atmospheric pressure air have been conducted using Rayleigh scattering of a pulsed ultraviolet laser. Rayleigh scatter images were used to generate highly resolved 1D and 2D profiles of translational temperature, with the analysis based on the ideal gas inverse relationship between temperature and gas density. The technique was shown to be practical to an upper gas temperature limit of approximately 2000 K. Rayleigh scattering results were compared to standard optical emission spectral analyses of bands, where the calculated rotational temperatures from emission agreed consistently with the peak translational temperatures within the microdischarge measured by Rayleigh laser scatter analyses. The results provide distinctive support of the assumption commonly applied for discharges that the excited state has an identical rotational energy distribution as the ground state. The microdischarge investigated in this study was found to follow another common assumption for non-thermal discharges; that the translation and rotational temperatures are approximately equal to each other and the vibrational temperature is of a much higher value. [ABSTRACT FROM AUTHOR] AB - Copyright of Plasma Sources Science & Technology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON temperature KW - RAYLEIGH scattering KW - ULTRAVIOLET lasers KW - NITROGEN plasmas KW - DIRECT currents KW - EMISSION spectroscopy KW - PLASMA flow N1 - Accession Number: 102035575; S F Adams 1; Email Address: steven.adams.11@us.af.mil J E Caplinger 2 B S Sommers 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: UES Inc., Dayton, OH 45432, USA; Source Info: Apr2015, Vol. 24 Issue 2, p1; Subject Term: ELECTRON temperature; Subject Term: RAYLEIGH scattering; Subject Term: ULTRAVIOLET lasers; Subject Term: NITROGEN plasmas; Subject Term: DIRECT currents; Subject Term: EMISSION spectroscopy; Subject Term: PLASMA flow; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0963-0252/24/2/025031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102035575&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Larson, Marilynn A. AU - Nalbantoglu, Ufuk AU - Sayood, Khalid AU - Zentz, Emily B. AU - Bartling, Amanda M. AU - Francesconi, Stephen C. AU - Fey, Paul D. AU - Dempsey, Michael P. AU - Hinrichs, Steven H. T1 - Francisella tularensis Subtype A.II Genomic Plasticity in Comparison with Subtype A.I. JO - PLoS ONE JF - PLoS ONE Y1 - 2015/04// VL - 10 IS - 4 M3 - Article SP - 1 EP - 21 PB - Public Library of Science SN - 19326203 AB - Although Francisella tularensis is considered a monomorphic intracellular pathogen, molecular genotyping and virulence studies have demonstrated important differences within the tularensis subspecies (type A). To evaluate genetic variation within type A strains, sequencing and assembly of a new subtype A.II genome was achieved for comparison to other completed F. tularensis type A genomes. In contrast with the F. tularensis A.I strains (SCHU S4, FSC198, NE061598, and TI0902), substantial genomic variation was observed between the newly sequenced F. tularensis A.II strain (WY-00W4114) and the only other publically available A.II strain (WY96-3418). Genome differences between WY-00W4114 and WY96-3418 included three major chromosomal translocations, 1580 indels, and 286 nucleotide substitutions of which 159 were observed in predicted open reading frames and 127 were located in intergenic regions. The majority of WY-00W4114 nucleotide deletions occurred in intergenic regions, whereas most of the insertions and substitutions occurred in predicted genes. Of the nucleotide substitutions, 48 (30%) were synonymous and 111 (70%) were nonsynonymous. WY-00W4114 and WY96-3418 nucleotide polymorphisms were predominantly G/C to A/T allelic mutations, with WY-00W4114 having more A+T enrichment. In addition, the A.II genomes contained a considerably higher number of intact genes and longer repetitive sequences, including transposon remnants than the A.I genomes. Together these findings support the premise that F. tularensis A.II may have a fitness advantage compared to the A.I subtype due to the higher abundance of functional genes and repeated chromosomal sequences. A better understanding of the selective forces driving F. tularensis genetic diversity and plasticity is needed. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRANCISELLA tularensis KW - BACTERIAL genomes KW - INTRACELLULAR pathogens KW - BACTERIAL genetics KW - NUCLEOTIDES KW - Research Article N1 - Accession Number: 102400496; Larson, Marilynn A. 1; Email Address: malarson@unmc.edu Nalbantoglu, Ufuk 2 Sayood, Khalid 2 Zentz, Emily B. 3 Bartling, Amanda M. 1 Francesconi, Stephen C. 4 Fey, Paul D. 1 Dempsey, Michael P. 5 Hinrichs, Steven H. 1; Affiliation: 1: Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska, United States of America 2: Department of Electrical Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, United States of America 3: OpGen Inc., Gaithersburg, Maryland, United States of America 4: Naval Medical Research Center, Fort Detrick, Maryland, United States of America 5: United States Air Force School of Aerospace Medicine, Wright-Patterson Air Force Base, Ohio, United States of America; Source Info: Apr2015, Vol. 10 Issue 4, p1; Subject Term: FRANCISELLA tularensis; Subject Term: BACTERIAL genomes; Subject Term: INTRACELLULAR pathogens; Subject Term: BACTERIAL genetics; Subject Term: NUCLEOTIDES; Author-Supplied Keyword: Research Article; Number of Pages: 21p; Document Type: Article L3 - 10.1371/journal.pone.0124906 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102400496&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, C. AU - Arge, C. AU - Odstrcil, D. AU - Millward, G. AU - Pizzo, V. AU - Lugaz, N. T1 - Ensemble Modeling of Successive Halo CMEs: A Case Study. JO - Solar Physics JF - Solar Physics Y1 - 2015/04// VL - 290 IS - 4 M3 - Article SP - 1207 EP - 1229 PB - Springer Science & Business Media B.V. SN - 00380938 AB - The Wang-Sheeley-Arge (WSA)-Enlil cone modeling system is used for making routine arrival-time forecasts of Earth-directed halo coronal mass ejections (CMEs), since they typically produce the most geoeffective events. A major objective of this work is to better understand the sensitivity of the WSA-Enlil modeling results to input model parameters and how these parameters contribute to the overall model uncertainty and performance. In this study, ensemble-modeling results for a succession of three halo CME events that occurred on 2 - 4 August 2011 are presented. We investigate the sensitivity of the modeled CME arrival times to small variations in the input-cone properties by creating ensemble sets of numerical simulations for each CME event, based on multiple sets of cone parameters. We find that the accuracy of the modeled CME arrival times not only depends on the small variations to the initial input geometry, but also on the reliable specification of the background solar wind, which is driven by the input maps of the photospheric magnetic field. The accuracy in the arrival-time predictions also depends on whether the cone parameters for all three CMEs are specified in a single WSA-Enlil simulation. The inclusion or exclusion of one or two of the preceding CMEs affects the solar-wind conditions through which the succeeding CME propagates. Although the accuracy of the modeled arrival times is sensitive to the input maps that are used to drive the background solar wind, the spread in the modeling ensemble remains mostly unchanged when different input maps are used. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORONAL mass ejections KW - PARAMETER estimation KW - PERFORMANCE evaluation KW - SOLAR wind KW - PHYSICS research KW - Coronal mass ejections, modeling KW - Ensemble modeling KW - Solar wind, modeling KW - Solar wind, observations N1 - Accession Number: 101989388; Lee, C. 1; Email Address: clee@ssl.berkeley.edu Arge, C. 2 Odstrcil, D. 3 Millward, G. 4 Pizzo, V. 4 Lugaz, N. 5; Affiliation: 1: Space Sciences Laboratory, University of California, Berkeley USA 2: Air Force Research Laboratory/Space Vehicles Directorate, Kirtland Air Force Base USA 3: George Mason University, Fairfax USA 4: NOAA Space Weather Prediction Center, Boulder USA 5: Space Science Center and Department of Physics, University of New Hampshire, Durham USA; Source Info: Apr2015, Vol. 290 Issue 4, p1207; Subject Term: CORONAL mass ejections; Subject Term: PARAMETER estimation; Subject Term: PERFORMANCE evaluation; Subject Term: SOLAR wind; Subject Term: PHYSICS research; Author-Supplied Keyword: Coronal mass ejections, modeling; Author-Supplied Keyword: Ensemble modeling; Author-Supplied Keyword: Solar wind, modeling; Author-Supplied Keyword: Solar wind, observations; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; Number of Pages: 23p; Document Type: Article L3 - 10.1007/s11207-015-0667-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101989388&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2015-26800-003 AN - 2015-26800-003 AU - Sherman, Julie AU - Tarnow, Jay AU - Peacock, Walker AU - Walker, Jerry V. T1 - Reliability and validity analyses of the self-management questionnaire. JF - Child & Family Behavior Therapy JO - Child & Family Behavior Therapy JA - Child Fam Behav Ther Y1 - 2015/04// VL - 37 IS - 2 SP - 114 EP - 137 CY - United Kingdom PB - Taylor & Francis SN - 0731-7107 SN - 1545-228X AD - Sherman, Julie, Southeast Texas Behavioral Solutions, 80 Interstate 10 N., Suite 205, Beaumont, TX, US, 77702 N1 - Accession Number: 2015-26800-003. Partial author list: First Author & Affiliation: Sherman, Julie; Southeast Texas Behavioral Solutions, Beaumont, TX, US. Other Publishers: Haworth Press. Release Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Diagnosis; Evaluation; Parents; Questionnaires; Self-Management. Minor Descriptor: Self-Analysis; Test Construction; Test Reliability; Test Validity. Classification: Health Psychology Testing (2226); Affective Disorders (3211). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Childhood (birth-12 yrs) (100); Preschool Age (2-5 yrs) (160); School Age (6-12 yrs) (180); Adolescence (13-17 yrs) (200); Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Tests & Measures: Self-Management Questionnaire Third Edition; Conners 3rd Edition DOI: 10.1037/t04956-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 24. Issue Publication Date: Apr, 2015. Publication History: Accepted Date: Oct 11, 2013; Revised Date: Oct 5, 2013; First Submitted Date: Jun 22, 2013. Copyright Statement: Taylor & Francis Group, LLC AB - The authors developed a parent-report measure to enhance findings for diagnoses and evaluations, and therefore, improve on the assessments currently being widely used for this purpose. Data were gathered on 322 clients (4–18 years old) seeking treatment at a private practice setting. Factor analysis revealed 18 subscales. Scores were internally consistent and distinct from other subscales. In addition, the questionnaire showed good diagnostic utility for depression, Oppositional Defiant Disorder (ODD), and Pervasive Developmental Disorder (PDD). This study provides sufficient evidence of the reliability and validity of the Self-Management Questionnaire (SMQ) to recommend its use for skills and needs assessment with children and adolescents. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - adolescents KW - assessment KW - autism KW - children KW - depression KW - Oppositional Defiant Disorder (ODD) KW - psychology KW - self-management KW - 2015 KW - Diagnosis KW - Evaluation KW - Parents KW - Questionnaires KW - Self-Management KW - Self-Analysis KW - Test Construction KW - Test Reliability KW - Test Validity KW - 2015 DO - 10.1080/07317107.2015.1035987 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-26800-003&site=ehost-live&scope=site UR - drsherman4@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-16714-003 AN - 2015-16714-003 AU - Webb, Timothy S. AU - Whitehead, Casserly R. AU - Wells, Timothy S. AU - Gore, Russell K. AU - Otte, Clifford N. T1 - Neurologically-related sequelae associated with mild traumatic brain injury. JF - Brain Injury JO - Brain Injury JA - Brain Inj Y1 - 2015/04// VL - 29 IS - 4 SP - 430 EP - 437 CY - United Kingdom PB - Taylor & Francis SN - 0269-9052 SN - 1362-301X AD - Whitehead, Casserly R., Infoscitex Corporation, 4027 Colonel Glenn Highway, Suite 210, Dayton, OH, US, 45431-1672 N1 - Accession Number: 2015-16714-003. PMID: 25541640 Partial author list: First Author & Affiliation: Webb, Timothy S.; Vulnerability Analysis Branch, Air Force Research Laboratory, Wright-Patterson AFBoh, OH, US. Other Publishers: Informa Healthcare. Release Date: 20150511. Correction Date: 20151207. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Traumatic Brain Injury; Risk Assessment. Minor Descriptor: Brain Concussion; Chronic Pain; Epilepsy; Sequelae. Classification: Neurological Disorders & Brain Damage (3297); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Longitudinal Study; Prospective Study; Quantitative Study. References Available: Y. Page Count: 8. Issue Publication Date: Apr, 2015. Publication History: First Posted Date: Dec 24, 2014; Accepted Date: Nov 17, 2014; Revised Date: Sep 12, 2014; First Submitted Date: Feb 6, 2014. Copyright Statement: Informa UK Ltd. 2015. AB - Objective: Mild traumatic brain injury (mTBI) accounts for more than 75% of traumatic brain injuries every year. This study examines the temporal association between non-blast mTBI and the onset of neurologic sequelae to illuminate risks of post-concussive syndrome, epilepsy and chronic pain. Methods: A large historical prospective study was conducted utilizing electronically-recorded demographic, medical and military-specific data for over half a million active duty US Air Force Airmen. This study utilized diagnostic codes to identify mTBI exposures, two control groups and three post-mTBI time periods. Adjusted hazard ratios (HRs) were calculated using Cox proportional hazards modelling. Results: HRs were higher when mTBI exposed Airmen were compared with the full cohort and lower when compared with the other injured group. When compared to the other injured group, mTBI was positively associated with epilepsy/recurrent seizure outcomes, post-concussive syndrome and pain disorders. HRs tended to be highest within the first 30 days and decreased over time. Conclusions: Findings support that mTBI may have a prolonged neurological impact. Findings are also likely generalizable to young adult populations with exposure to non-blast related mTBI, including civilians, as those included in this study were young adults with a high prevalence of recreational/sports and motor vehicle injuries. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Concussion KW - mild brain injury KW - neurological KW - post-concussional syndrome. KW - 2015 KW - Air Force Personnel KW - Traumatic Brain Injury KW - Risk Assessment KW - Brain Concussion KW - Chronic Pain KW - Epilepsy KW - Sequelae KW - 2015 U1 - Sponsor: Defense Center of Excellence for Psychological Health and Traumatic Brain Injury. Recipients: No recipient indicated DO - 10.3109/02699052.2014.989904 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-16714-003&site=ehost-live&scope=site UR - casserly.whitehead.ctr@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Reed, A.N. AU - Shamberger, P.J. AU - Hu, J.J. AU - Muratore, C. AU - Bultman, J.E. AU - Voevodin, A.A. T1 - Microstructure of ZnO thin films deposited by high power impulse magnetron sputtering. JO - Thin Solid Films JF - Thin Solid Films Y1 - 2015/03/31/ VL - 579 M3 - Article SP - 30 EP - 37 SN - 00406090 AB - High power impulse magnetron sputtering was used to deposit thin (~ 100 nm) zinc oxide (ZnO) films from a ceramic ZnO target onto substrates heated to 150 °C. The resulting films had strong crystallinity, highly aligned (002) texture and low surface roughness (root mean square roughness less than 10 nm), as determined by X-ray diffraction, transmission electron microscopy, scanning electron microscopy and atomic force spectroscopy measurements. Deposition pressure and target–substrate distance had the greatest effect on film microstructure. The degree of alignment in the films was strongly dependent on the gas pressure. Deposition at pressures less than 0.93 Pa resulted in a bimodal distribution of grain sizes. An initial growth layer with preferred orientations (101) and (002) parallel to the interface was observed at the film–substrate interface under all conditions examined here; the extent of that competitive region was dependent on growth conditions. Time-resolved current measurements of the target and ion energy distributions, determined using energy resolved mass spectrometry, were correlated to film microstructure in order to investigate the effect of plasma conditions on film nucleation and growth. [ABSTRACT FROM AUTHOR] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRON sputtering KW - THIN films KW - ZINC oxide KW - CRYSTALLINITY KW - TRANSMISSION electron microscopy KW - SCANNING electron microscopy KW - HiPIMS KW - Low-temperature deposition KW - Microstructure KW - Sputtering KW - ZnO N1 - Accession Number: 101920630; Reed, A.N. 1,2; Email Address: amber.reed.5@us.af.mil Shamberger, P.J. 3 Hu, J.J. 1,4 Muratore, C. 2 Bultman, J.E. 1,4 Voevodin, A.A. 1; Email Address: andrey.voevodin@us.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, 3005 Hobson Way, Wright Patterson Air Force Base, OH 45433, USA 2: Department of Chemical and Materials Engineering, University of Dayton, Dayton, OH 45469, USA 3: Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA 4: University of Dayton Research Institute, University of Dayton, Dayton, OH 45469, USA; Source Info: Mar2015, Vol. 579, p30; Subject Term: MAGNETRON sputtering; Subject Term: THIN films; Subject Term: ZINC oxide; Subject Term: CRYSTALLINITY; Subject Term: TRANSMISSION electron microscopy; Subject Term: SCANNING electron microscopy; Author-Supplied Keyword: HiPIMS; Author-Supplied Keyword: Low-temperature deposition; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Sputtering; Author-Supplied Keyword: ZnO; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.tsf.2015.02.048 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101920630&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jianlin Wang AU - Haoliang Huang AU - Changhui Liu AU - Zhengping Fu AU - Xiaofang Zhai AU - Ranran Peng AU - Yalin Lu T1 - Platinum-induced structural collapse in layered oxide polycrystalline films. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2015/03/30/ VL - 106 IS - 13 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00036951 AB - Effect of a platinum bottom electrode on the SrBi5Fe1-xCoxTi4O18 layered oxide polycrystalline films was systematically studied. The doped cobalt ions react with the platinum to form a secondary phase of PtCoO2, which has a typical Delafossite structure with a weak antiferromagnetism and an exceptionally high in-plane electrical conductivity. Formation of PtCoO2 at the interface partially consumes the cobalt dopant and leads to the structural collapsing from 5 to 4 layers, which was confirmed by X-ray diffraction and high resolution transmission electron microscopy measurements. Considering the weak magnetic contribution from PtCoO2, the observed ferromagnetism should be intrinsic of the Aurivillius compounds. Ferroelectric properties were also indicated by the piezoresponse force microscopy. In this work, the platinum induced secondary phase at the interface was observed, which has a strong impact on Aurivillius structural configuration and thus the ferromagnetic and ferroelectric properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLATINUM electrodes KW - POLYCRYSTALS KW - STRONTIUM compounds KW - METALS -- Electric properties KW - METALS -- Magnetic properties KW - ANTIFERROMAGNETISM N1 - Accession Number: 101977354; Jianlin Wang 1 Haoliang Huang 1,2 Changhui Liu 1 Zhengping Fu 1,2,3 Xiaofang Zhai 2,3 Ranran Peng 1,2,3; Email Address: pengrr@ustc.edu.cn Yalin Lu 1,2,3,4; Email Address: yllu@ustc.edu.cn; Affiliation: 1: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, People's Republic of China 2: Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, People's Republic of China 3: Hefei National Laboratory for Physical Sciences, Microscale, University of Science and Technology of China, Hefei 230026, People's Republic of China 4: Laser and Optics Research Center, Department of Physics, United States Air Force Academy, Colorado 80840, USA; Source Info: 2015, Vol. 106 Issue 13, p1; Subject Term: PLATINUM electrodes; Subject Term: POLYCRYSTALS; Subject Term: STRONTIUM compounds; Subject Term: METALS -- Electric properties; Subject Term: METALS -- Magnetic properties; Subject Term: ANTIFERROMAGNETISM; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 4p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.4915507 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101977354&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schmitt-Sody, Andreas AU - French, David AU - White, William AU - Lucero, Adrian AU - Roach, William P. AU - Hasson, Victor T1 - The importance of corona generation and leader formation during laser filament guided discharges in air. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2015/03/23/ VL - 106 IS - 12 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00036951 AB - Images taken with an intensified CCD camera show the dynamics during filament guided discharge events. The images reveal that filament initiated corona plays a role in the presented results. Furthermore, the images show the formation of leaders, propagating and eventually bridging the gap between the high voltage (HV) electrodes. Analysis of the images and comparison to oscilloscope traces of voltage and current dynamics reveal the origin of the delay between the filament and HV discharge and allows for a probability of discharge analysis. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORONA (Electricity) KW - ELECTRIC discharges KW - CHARGE coupled devices KW - HIGH voltages KW - ELECTRODES N1 - Accession Number: 101828480; Schmitt-Sody, Andreas 1 French, David 1 White, William 1 Lucero, Adrian 2 Roach, William P. 3 Hasson, Victor 4; Affiliation: 1: Air Force Research Laboratory, Kirtland AFB, New Mexico 87117, USA 2: Boeing DES, Kirtland AFB, New Mexico 87117, USA 3: Air Force Office of Science and Research, Arlington, Virginia 22203, USA 4: College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA; Source Info: 2015, Vol. 106 Issue 12, p1; Subject Term: CORONA (Electricity); Subject Term: ELECTRIC discharges; Subject Term: CHARGE coupled devices; Subject Term: HIGH voltages; Subject Term: ELECTRODES; Number of Pages: 4p; Illustrations: 2 Black and White Photographs, 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.4916219 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101828480&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wiens, Justin P. AU - Shuman, Nicholas S. AU - Viggiano, Albert A. T1 - Dissociative recombination and mutual neutralization of heavier molecular ions: C10H8+, WF5+, and CnFm+. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2015/03/21/ VL - 142 IS - 11 M3 - Article SP - 1 EP - 7 PB - American Institute of Physics SN - 00219606 AB - Dissociative recombination (DR) rate coefficients for the naphthalene cation, C10H8+, and WF5+, and mutual neutralization (MN) rate coefficients for these species and five CnFm+ ions, were determined at 300 K using variable electron and neutral density attachment mass spectrometry (VENDAMS). DR proceeds at 9 ± 3 × 10-7 cm³ s-1 for C10H8+ and at 6.1 ± 1.4 × 10-7 cm³ s-1 for WF5+. Consistent with previous results, MN for the polyatomic cations with the halide anions Cl-, Br-, and I- exhibits an approximate μ-1/2 reduced mass dependence of the reactant partners, demonstrating that ion collision velocities influence the rate coefficients. This work is an extension of VENDAMS to systems, where low reactant concentrations are necessary to avoid significant reaction of product ions with the neutral precursor, i.e., conditions not suitable for traditional flowing afterglow measurements, as well as to ions of masses > - 100 Da, which are not amenable to the study of DR in magnetic storage rings. Our results expand the sparse literature on DR and MN of heavier ions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEUTRALIZATION (Chemistry) KW - IONS KW - NAPHTHALENE KW - CARBON compounds KW - HALIDES KW - COLLISIONS (Physics) N1 - Accession Number: 101718088; Wiens, Justin P. 1 Shuman, Nicholas S. 1 Viggiano, Albert A. 1; Email Address: afrl.rvborgmailbox@kirtland.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117, USA; Source Info: 2015, Vol. 142 Issue 11, p1; Subject Term: NEUTRALIZATION (Chemistry); Subject Term: IONS; Subject Term: NAPHTHALENE; Subject Term: CARBON compounds; Subject Term: HALIDES; Subject Term: COLLISIONS (Physics); NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; Number of Pages: 7p; Illustrations: 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.4913829 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101718088&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lu, C. A. AU - Newell, T. C. AU - Glebov, L. AU - Balakrishnan, G. T1 - Wavelength beam combining of VECSELs using multiplexed volume Bragg gratings in a compound cavity. JO - Electronics Letters JF - Electronics Letters Y1 - 2015/03/19/ VL - 51 IS - 6 M3 - Article SP - 508 EP - 510 PB - Institution of Engineering & Technology SN - 00135194 AB - A method of wavelength beam combining to enhance the total output brightness of vertical external cavity surface emitting lasers (VECSELs) using multiplexed volume Bragg gratings (MVBGs) is presented. The MVBGs are designed to introduce wavelength-specific feedback for the 1020 nm near-infrared wavelength VECSELs to achieve both spectral stabilisation and beam combining effects. In conjunction with the compound cavity arrangement, a combined output of >6 W is achieved with >98% combining efficiency using two VECSELs. The beam combining scheme produces near-diffraction limited output with enhanced spectral density and wavelength-stabilised characteristics. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVELENGTH division multiplexing KW - SURFACE emitting lasers KW - NEAR infrared radiation KW - SPECTRUM analysis KW - SPECTRAL energy distribution N1 - Accession Number: 101549174; Lu, C. A. 1; Email Address: chunte.lu@kirtland.af.mil Newell, T. C. 1 Glebov, L. 2 Balakrishnan, G. 3; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, NM 87117, USA 2: CREOL/College of Optics and Photonics, University of Central Florida, Orlando, FL 32816, USA 3: Center for High Technology Materials, University of New Mexico, Albuquerque, NM 87117, USA; Source Info: 3/19/2015, Vol. 51 Issue 6, p508; Subject Term: WAVELENGTH division multiplexing; Subject Term: SURFACE emitting lasers; Subject Term: NEAR infrared radiation; Subject Term: SPECTRUM analysis; Subject Term: SPECTRAL energy distribution; Number of Pages: 3p; Illustrations: 2 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1049/el.2014.4111 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101549174&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davenport, Eddie AU - Palileo, Edwin AU - Rupp, Karen AU - Jones, Samuel AU - Alvarado, Rosalinda AU - Haynes, Jared T1 - WOLFF-PARKINSON-WHITE PATTERN IN ASYMPTOMATIC UNITED STATES AIR FORCE AVIATORS: ARE THEY SAFE TO FLY? JO - Journal of the American College of Cardiology (JACC) JF - Journal of the American College of Cardiology (JACC) Y1 - 2015/03/18/Mar2015 Supplement VL - 65 M3 - Article SP - A375 EP - A375 SN - 07351097 KW - WOLFF-Parkinson-White syndrome -- Treatment KW - AIR pilots KW - MEDICAL care -- United States KW - AIR forces KW - AEROSPACE industries N1 - Accession Number: 101497436; Davenport, Eddie 1 Palileo, Edwin 1 Rupp, Karen 1 Jones, Samuel 1 Alvarado, Rosalinda 1 Haynes, Jared 1; Affiliation: 1: United States Air Force School of Aerospace Medicine, Wright-Patterson AFB, OH, USA; Source Info: Mar2015 Supplement, Vol. 65, pA375; Subject Term: WOLFF-Parkinson-White syndrome -- Treatment; Subject Term: AIR pilots; Subject Term: MEDICAL care -- United States; Subject Term: AIR forces; Subject Term: AEROSPACE industries; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; NAICS/Industry Codes: 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.1016/S0735-1097(15)60375-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101497436&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davenport, Eddie AU - Palileo, Edwin AU - Kruyer, William AU - Strader, James T1 - SCREENING WITH ECHOCARDIOGRAPHY OR STRESS TESTING IN ASYMPTOMATIC USAF AVIATORS- NOT EFFICACIOUS. JO - Journal of the American College of Cardiology (JACC) JF - Journal of the American College of Cardiology (JACC) Y1 - 2015/03/18/Mar2015 Supplement VL - 65 M3 - Article SP - A1454 EP - A1454 SN - 07351097 KW - ECHOCARDIOGRAPHY KW - STRESS (Physiology) KW - SYMPTOMS KW - CARDIOLOGY -- Periodicals KW - PUBLISHERS & publishing N1 - Accession Number: 101495911; Davenport, Eddie 1 Palileo, Edwin 1 Kruyer, William 1 Strader, James 1; Affiliation: 1: United States Air Force School of Aerospace Medicine, Wright-Patterson AFB, OH, USA; Source Info: Mar2015 Supplement, Vol. 65, pA1454; Subject Term: ECHOCARDIOGRAPHY; Subject Term: STRESS (Physiology); Subject Term: SYMPTOMS; Subject Term: CARDIOLOGY -- Periodicals; Subject Term: PUBLISHERS & publishing; NAICS/Industry Codes: 511190 Other publishers; NAICS/Industry Codes: 511199 All Other Publishers; NAICS/Industry Codes: 511130 Book Publishers; Number of Pages: 1p; Document Type: Article L3 - 10.1016/S0735-1097(15)61454-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101495911&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Burns, J.T. AU - Bush, R.W. AU - Ai, J.H. AU - Jones, J.L. AU - Lee, Y. AU - Gangloff, R.P. T1 - Effect of water vapor pressure on fatigue crack growth in Al–Zn–Cu–Mg over wide-range stress intensity factor loading. JO - Engineering Fracture Mechanics JF - Engineering Fracture Mechanics Y1 - 2015/03/15/ VL - 137 M3 - Article SP - 34 EP - 55 SN - 00137944 AB - Investigation of the deleterious effect of high purity water vapor on fatigue crack growth rate (d a /d N ) in 7075-T651 shows that growth rate declines with decreasing water vapor pressure ( P H2O ) over a wide range of stress intensity range (Δ K ). Decreasing Δ K experiments exhibit a novel minimum in d a /d N for intermediate P H2O and low Δ K . This minimum and testing protocol dependent environmental-fatigue behavior are explained by crack wake fracture morphology and R -dependent crack opening displacement effects on molecular flow to the crack tip. This environmentally-based mechanism leads to the onset and reversal of a non-conservative and false high threshold stress intensity range. [ABSTRACT FROM AUTHOR] AB - Copyright of Engineering Fracture Mechanics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WATER vapor KW - FATIGUE crack growth KW - STRESS intensity factors (Fracture mechanics) KW - VAPOR pressure KW - ALUMINUM alloys KW - DISPLACEMENT (Mechanics) KW - Environment enhanced fatigue KW - Fatigue KW - Hydrogen embrittlement KW - Threshold KW - Vacuum KW - Water vapor pressure N1 - Accession Number: 102114933; Burns, J.T. 1; Email Address: jtb5r@virginia.edu Bush, R.W. 2 Ai, J.H. 1 Jones, J.L. 1 Lee, Y. 1,2 Gangloff, R.P. 1; Affiliation: 1: University of Virginia, Charlottesville, VA 22904, United States 2: United States Air Force Academy, USAF Academy, CO 80841, United States; Source Info: Mar2015, Vol. 137, p34; Subject Term: WATER vapor; Subject Term: FATIGUE crack growth; Subject Term: STRESS intensity factors (Fracture mechanics); Subject Term: VAPOR pressure; Subject Term: ALUMINUM alloys; Subject Term: DISPLACEMENT (Mechanics); Author-Supplied Keyword: Environment enhanced fatigue; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Hydrogen embrittlement; Author-Supplied Keyword: Threshold; Author-Supplied Keyword: Vacuum; Author-Supplied Keyword: Water vapor pressure; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; Number of Pages: 22p; Document Type: Article L3 - 10.1016/j.engfracmech.2014.11.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102114933&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Galyon Dorman, Sarah E. AU - Reid, Timothy A. AU - Hoff, Benjamin K. AU - Henning, Daniel H. AU - Collins, Sarah E. T1 - The effect of corrosion inhibitors on environmental fatigue crack growth in Al–Zn–Mg–Cu. JO - Engineering Fracture Mechanics JF - Engineering Fracture Mechanics Y1 - 2015/03/15/ VL - 137 M3 - Article SP - 56 EP - 63 SN - 00137944 AB - Researchers have shown that high levels of chromate added to corrosion fatigue tests on 7xxx series aluminum alloys slows the fatigue crack growth rate (Gasem and Gangloff, 2001; Lui et al., 2003). Corrosion fatigue testing was completed with polymer coating leaching rate relevant inhibitor concentrations to determine the effect on fatigue damage. These results were compared to inhibition by the bacteria Ralstonia pickettii . For the test conditions, the bacteria showed better inhibition than the ionic inhibitors. More research is needed to quantify the mechanical load range and atmospheric corrosion conditions over which ionic inhibition will occur with the low levels of inhibitors available from coatings. [ABSTRACT FROM AUTHOR] AB - Copyright of Engineering Fracture Mechanics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM-zinc-magnesium-copper alloys KW - CORROSION & anti-corrosives KW - CRACK propagation (Fracture mechanics) KW - FATIGUE testing machines KW - SURFACE coatings KW - LEACHING KW - AA7075 KW - Chromate KW - Corrosion fatigue inhibition KW - Inhibitor leaching KW - Microbial influenced corrosion KW - Molybdate N1 - Accession Number: 102114938; Galyon Dorman, Sarah E. 1; Email Address: sgd@saf-engineering.com Reid, Timothy A. 2 Hoff, Benjamin K. 1 Henning, Daniel H. 1 Collins, Sarah E. 1; Affiliation: 1: Center for Aircraft Structural Life Extension, 2354 Fairchild Drive, Suite 2J2, USAF Academy, CO 80840, United States 2: United States Air Force Academy, Department of Biology, 2355 Faculty Drive, Suite 2P389, USAF Academy, CO 80840, United States; Source Info: Mar2015, Vol. 137, p56; Subject Term: ALUMINUM-zinc-magnesium-copper alloys; Subject Term: CORROSION & anti-corrosives; Subject Term: CRACK propagation (Fracture mechanics); Subject Term: FATIGUE testing machines; Subject Term: SURFACE coatings; Subject Term: LEACHING; Author-Supplied Keyword: AA7075; Author-Supplied Keyword: Chromate; Author-Supplied Keyword: Corrosion fatigue inhibition; Author-Supplied Keyword: Inhibitor leaching; Author-Supplied Keyword: Microbial influenced corrosion; Author-Supplied Keyword: Molybdate; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; NAICS/Industry Codes: 212291 Uranium-Radium-Vanadium Ore Mining; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.engfracmech.2014.12.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102114938&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Joanna S. AU - Smith, Howard E. AU - Brown, Gail J. T1 - Stability and aging studies of lead sulfide quantum dot films: Photoabsorption, morphology, and chemical state characteristics. JO - Materials Chemistry & Physics JF - Materials Chemistry & Physics Y1 - 2015/03/15/ VL - 154 M3 - Article SP - 44 EP - 52 SN - 02540584 AB - The stability of colloidal PbS quantum dot (QD) films deposited on glass substrates was studied over a short term and a long term periods, when left unprotected in air under ambient conditions. Two deposition approaches were used, traditional solvent deposition method (SDM) and supercritical fluid CO 2 deposition (SFD). To track possible changes to the QDs over time, near infrared (NIR) spectrometry, X-ray photoelectron spectroscopy (XPS), powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and optical microscopy, were employed. Evidence points towards initial oxidation-induced shrinking of the active QD volume causing a blue shift of the absorption over the first four months, and then experiencing competition from oxidation and sintering/ripening of the QDs, resulting in a red shift. The presented studies have important consequences for the long term reliability of light emitters based on PbS QDs. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Chemistry & Physics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEAD sulfide KW - SERVICE life (Engineering) KW - LIGHT absorption KW - QUANTUM dots KW - SUPERCRITICAL fluids KW - SURFACE morphology KW - X-ray photoelectron spectroscopy KW - Optical properties KW - Oxidation KW - Thin films KW - X-ray photoelectron spectroscopy (XPS) N1 - Accession Number: 100946694; Wang, Joanna S. 1; Email Address: jswang@uidaho.edu Smith, Howard E. 1,2 Brown, Gail J. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright Patterson AFB, OH 45433-7707, USA 2: University of Dayton Research Institute, Dayton, OH 45469-0071, USA; Source Info: Mar2015, Vol. 154, p44; Subject Term: LEAD sulfide; Subject Term: SERVICE life (Engineering); Subject Term: LIGHT absorption; Subject Term: QUANTUM dots; Subject Term: SUPERCRITICAL fluids; Subject Term: SURFACE morphology; Subject Term: X-ray photoelectron spectroscopy; Author-Supplied Keyword: Optical properties; Author-Supplied Keyword: Oxidation; Author-Supplied Keyword: Thin films; Author-Supplied Keyword: X-ray photoelectron spectroscopy (XPS); Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.matchemphys.2015.01.043 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100946694&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - S B Fairchild AU - J Boeckl AU - J B Ferguson AU - H Koerner AU - B Maruyama AU - K L Averett AU - T C Back AU - P T Murray AU - M A Lange AU - G Gruen AU - M M Cahay AU - N Behabtu AU - C C Young AU - M Pasquali AU - D E Tsentalovich AU - N P Lockwood T1 - Morphology dependent field emission of acid-spun carbon nanotube fibers. JO - Nanotechnology JF - Nanotechnology Y1 - 2015/03/13/ VL - 26 IS - 10 M3 - Article SP - 1 EP - 1 SN - 09574484 AB - Acid spun carbon nanotube (CNT) fibers were investigated for their field emission properties and performance was determined to be dependent on fiber morphology. The fibers were fabricated by wet-spinning of pre-made CNTs. Fiber morphology was controlled by a fabrication method and processing conditions, as well as purity, size, and type of the CNT starting material. The internal fiber structure consisted of CNT fibrils held together by van der Waals forces. Alignment and packing density of the CNTs affects the fiber’s electrical and thermal conductivity. Fibers with similar diameters and differing morphology were compared, and those composed of the most densely packed and well aligned CNTs were the best field emitters as exhibited by a lower turn-on voltage and a larger field enhancement factor. Fibers with higher electrical and thermal conductivity demonstrated higher maximum current before failure and longer lifetimes. A stable emission current at 3 mA was obtained for 10 h at a field strength of <1 V μm−1. This stable high current operation makes these CNT fibers excellent candidates for use as low voltage electron sources for vacuum electronic devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Nanotechnology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - RESEARCH KW - FIELD emission KW - FIBERS KW - ELECTRIC conductivity KW - THERMAL conductivity N1 - Accession Number: 101147914; S B Fairchild 1 J Boeckl 1 J B Ferguson 1 H Koerner 1 B Maruyama 1 K L Averett 1 T C Back 2 P T Murray 2 M A Lange 3 G Gruen 3 M M Cahay 4 N Behabtu 5 C C Young 5 M Pasquali 5 D E Tsentalovich 5 N P Lockwood 6; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 2: Research Institute, University of Dayton, Dayton, OH 45469, USA 3: TechFlow Scientific, Albuquerque, NM 87110, USA 4: Spintronics and Vacuum Nanoelectronics Laboratory, University of Cincinnati, Cincinnati, OH 45221, USA 5: Department of Chemical and Biomolecular Engineering and Department of Chemistry, The Smalley Institute for Nanoscale Science and Technology, Rice University, Houston, TX 77005, USA 6: Directed Energy Directorate, Air Force Research Laboratory, Kirtland Air Force Base, NM 87117, USA; Source Info: 3/13/2015, Vol. 26 Issue 10, p1; Subject Term: CARBON nanotubes; Subject Term: RESEARCH; Subject Term: FIELD emission; Subject Term: FIBERS; Subject Term: ELECTRIC conductivity; Subject Term: THERMAL conductivity; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0957-4484/26/10/105706 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101147914&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gongyi Hong AU - Pachter, Ruth. T1 - Photoactivation of Cryptochromes from Drosophila melanogaster and Sylvia borin: Insight into the Chemical Compass Mechanism by Computational Investigation. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2015/03/12/ VL - 119 IS - 10 M3 - Article SP - 3883 EP - 3892 SN - 15206106 AB - Although behavioral studies demonstrated light-induced magnetoreception in the insect Drosophila melanogaster, gaining insight into the possibility that a radical-pair mechanism accounts for the magnetic response of the cryptochrome (DmCry1) is complicated by a number of factors. In addition, the mechanism of magnetoreception for the cryptochrome from the garden warbler bird Sylvia borin (gwCry1a), which demonstrated a long-lived radical pair by transient optical absorption measurements, has also not been rationalized. To assess potential feasibility of a radical-pair mechanism in DmCry1 and gwCry1a, formed by excitation and electron transfer between a Trp-triad and flavin adenine dinucleotide (FAD), further separated by electron transfer within the triad, we applied a combination of theoretical methods, including homology modeling and molecular dynamics (MD) for structure refinement, high-level ab initio theory, and MD simulations using a polarizable force-field for prediction of pKa and the electron transfer rate. Calculated excitation energies, followed by electron transfer in model compounds of DmCry1 that assume proton transfer in conjunction with electron transfer from Trp (W420) to FAD and the predicted pKa for the proximate residue to FAD (Cys416), support a radical-pair mechanism. Furthermore, free-energy and reorganization energies for the Trp-triad in DmCry1 demonstrate facile electron transfer, explained by the local protein environment and exposure to solvent, which in turn enables a large enough distance separation for the radical-pair partners. Results for gwCry1a demonstrated the importance of accounting for relaxed excited-state geometries in validating the first stage of a radical-pair mechanism. This work provides insight into the so-called chemical compass mechanism to explain magnetic-field sensing in DmCry1 and gwCry1a, expanding on previous work on the cyrptochrome from the plant Arabidopsis thaliana (Solov'yov et al. J. Am. Chem. Soc. 2012, 134, 18046-18052. Solov'yov et al., Sci. Rep. 2014, 4, 1-8.). [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOACTIVATION KW - CRYPTOCHROMES KW - DROSOPHILA melanogaster KW - GARDEN warbler KW - COMPUTATIONAL chemistry KW - MAGNETORECEPTION N1 - Accession Number: 101625875; Gongyi Hong 1,2 Pachter, Ruth. 1; Email Address: ruth.pachter@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, AFRL/RX, 3005 Hobson Way, Dayton, Ohio 45433, United States 2: General Dynamics Information Technology, Inc., 5100 Springfield Pike, Dayton, Ohio 45433, United States; Source Info: Mar2015, Vol. 119 Issue 10, p3883; Subject Term: PHOTOACTIVATION; Subject Term: CRYPTOCHROMES; Subject Term: DROSOPHILA melanogaster; Subject Term: GARDEN warbler; Subject Term: COMPUTATIONAL chemistry; Subject Term: MAGNETORECEPTION; Number of Pages: 10p; Document Type: Article L3 - 10.1021/jp508871h UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101625875&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Biswas, Sushmita AU - Xiaoying Liu AU - Jarrett, Jeremy W. AU - Brown, Dean AU - Pustovit, Vitaliy AU - Urbas, Augustine AU - Knappenberger Jr., Kenneth L. AU - Nealey, Paul F. AU - Vaia, Richard A. T1 - Nonlinear Chiro-Optical Amplification by Plasmonic Nanolens Arrays Formed via Directed Assembly of Gold Nanoparticles. JO - Nano Letters JF - Nano Letters Y1 - 2015/03/11/ VL - 15 IS - 3 M3 - Article SP - 1836 EP - 1842 SN - 15306984 AB - Metal nanoparticle assemblies are promising materials for nanophotonic applications due to novel linear and nonlinear optical properties arising from their plasmon modes. However, scalable fabrication approaches that provide both precision nano- and macroarchitectures, and performance commensurate with design and model predictions, have been limiting. Herein, we demonstrate controlled and efficient nanofocusing of the fundamental and second harmonic frequencies of incident linearly and circularly polarized light using reduced symmetry gold nanoparticle dimers formed by surface-directed assembly of colloidal nanoparticles. Large ordered arrays (<100) of these C 8v heterodimers (ratio of radii R 1/R 2 = 150 nm/50 nm = 3; gap distance l = 1 ± 0.5 nm) exhibit second harmonic generation and structure-dependent chiro-optic activity with the circular dichroism ratio of individual heterodimers varying less than 20% across the array, demonstrating precision and uniformity at a large scale. These nonlinear optical properties were mediated by interparticle plasmon coupling. Additionally, the versatility of the fabrication is demonstrated on a variety of substrates including flexible polymers. Numerical simulations guide architecture design as well as validating the experimental results, thus confirming the ability to optimize second harmonic yield and induce chiro-optical responses for compact sensors, optical modulators, and tunable light sources by rational design and fabrication of the nanostructures. [ABSTRACT FROM AUTHOR] AB - Copyright of Nano Letters is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GOLD nanoparticles KW - DIMERS KW - NONLINEAR optics KW - MOLECULAR self-assembly KW - SURFACE plasmons KW - NANOPHOTONICS KW - circular dichroism KW - Directed assembly KW - gold heterodimers KW - nanolens KW - second harmonic generation N1 - Accession Number: 101562045; Biswas, Sushmita 1 Xiaoying Liu 2 Jarrett, Jeremy W. 3 Brown, Dean 1 Pustovit, Vitaliy 1 Urbas, Augustine 1 Knappenberger Jr., Kenneth L. 3 Nealey, Paul F. 2 Vaia, Richard A. 1; Email Address: Richard.Vaia@us.af.mil; Affiliation: 1: Air Force Research Laboratory, 2941 Hobson Way, Wright Patterson Air Force Base, Ohio 45433, United States 2: Institute for Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States 3: Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States; Source Info: Mar2015, Vol. 15 Issue 3, p1836; Subject Term: GOLD nanoparticles; Subject Term: DIMERS; Subject Term: NONLINEAR optics; Subject Term: MOLECULAR self-assembly; Subject Term: SURFACE plasmons; Subject Term: NANOPHOTONICS; Author-Supplied Keyword: circular dichroism; Author-Supplied Keyword: Directed assembly; Author-Supplied Keyword: gold heterodimers; Author-Supplied Keyword: nanolens; Author-Supplied Keyword: second harmonic generation; Number of Pages: 7p; Document Type: Article L3 - 10.1021/nl504613q UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101562045&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yuanda Gao AU - Ren-Jye Shiue AU - Xuetao Gan AU - Luozhou Li AU - Cheng Peng AU - Meric, Inanc AU - Lei Wang AU - Szep, Attila AU - Walker Jr., Dennis AU - Hone, James AU - Englund, Dirk T1 - High-Speed Electro-Optic Modulator Integrated with Graphene-Boron Nitride Heterostructure and Photonic Crystal Nanocavity. JO - Nano Letters JF - Nano Letters Y1 - 2015/03/11/ VL - 15 IS - 3 M3 - Article SP - 2001 EP - 2005 SN - 15306984 AB - Nanoscale and power-efficient electro-optic (EO) modulators are essential components for optical interconnects that are beginning to replace electrical wiring for intra- and interchip communications.1-4 Silicon-based EO modulators show sufficient figures of merits regarding device footprint, speed, power consumption, and modulation depth.5-11 However, the weak electro-optic effect of silicon still sets a technical bottleneck for these devices, motivating the development of modulators based on new materials. Graphene, a two-dimensional carbon allotrope, has emerged as an alternative active material for optoelectronic applications owing to its exceptional optical and electronic properties.12-14 Here, we demonstrate a high-speed graphene electro-optic modulator based on a graphene-boron nitride (BN) heterostructure integrated with a silicon photonic crystal nanocavity. Strongly enhanced light-matter interaction of graphene in a submicron cavity enables efficient electrical tuning of the cavity reflection. We observe a modulation depth of 3.2 dB and a cutoff frequency of 1.2 GHz. [ABSTRACT FROM AUTHOR] AB - Copyright of Nano Letters is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRO-optical modulators KW - PHOTONIC crystals KW - SILICON KW - BORON nitride KW - OPTOELECTRONICS KW - HETEROSTRUCTURES KW - GRAPHENE KW - boron nitride KW - electro-optic modulator KW - graphene KW - Optoelectronics KW - photonic crystal N1 - Accession Number: 101562069; Yuanda Gao 1; Email Address: simpleyg2221@columbia.edu Ren-Jye Shiue 2 Xuetao Gan 3 Luozhou Li 2 Cheng Peng 2 Meric, Inanc 3 Lei Wang 1 Szep, Attila 4 Walker Jr., Dennis 4 Hone, James 1; Email Address: jh2228@columbia.edu Englund, Dirk 2; Email Address: englund@mit.edu; Affiliation: 1: Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States 2: Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States 3: Department of Electrical Engineering, Columbia University, New York, New York 10027, United States 4: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Ohio, 45433, United States; Source Info: Mar2015, Vol. 15 Issue 3, p2001; Subject Term: ELECTRO-optical modulators; Subject Term: PHOTONIC crystals; Subject Term: SILICON; Subject Term: BORON nitride; Subject Term: OPTOELECTRONICS; Subject Term: HETEROSTRUCTURES; Subject Term: GRAPHENE; Author-Supplied Keyword: boron nitride; Author-Supplied Keyword: electro-optic modulator; Author-Supplied Keyword: graphene; Author-Supplied Keyword: Optoelectronics; Author-Supplied Keyword: photonic crystal; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1021/nl504860z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101562069&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Castro-Palacio, Juan Carlos AU - Bemish, Raymond J. AU - Meuwly, Markus T1 - Communication: Equilibrium rate coefficients from atomistic simulations: The O(³P) + NO(²∏) → O2(X³∑-g) + N(4S) reaction at temperatures relevant to the hypersonic flight regime. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2015/03/07/ VL - 142 IS - 9 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00219606 AB - The O(³P) + NO(²∏) → O2(X³∑-g) + N(4S) reaction among the N- and O- involving reactions that dominate the energetics of the reactive air flow around spacecraft during hypersonic atmospheric re-entry. In this regime, the temperature in the bow shock typically ranges from 1000 to 20000 K. The forward and reverse rate coefficients for this reaction derived directly from trajectory calculations over this range of temperature are reported in this letter. Results compare well with the established equilibrium constants for the same reaction from thermodynamic quantities derived from spectroscopy in the gas phase which paves the way for large-scale in silico investigations of equilibrium rates under extreme conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL equilibrium KW - COMPUTER simulation KW - OXYGEN KW - NITROGEN oxides KW - TEMPERATURE effect KW - CHEMICAL reactions N1 - Accession Number: 101475118; Castro-Palacio, Juan Carlos 1 Bemish, Raymond J. 2 Meuwly, Markus 1,3; Email Address: m.meuwly@unibas.ch; Affiliation: 1: Department of Chemistry, University of Basel, Klingelbergstrasse 80, 4056 Basel, Switzerland 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117, USA 3: Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA; Source Info: 2015, Vol. 142 Issue 9, p1; Subject Term: CHEMICAL equilibrium; Subject Term: COMPUTER simulation; Subject Term: OXYGEN; Subject Term: NITROGEN oxides; Subject Term: TEMPERATURE effect; Subject Term: CHEMICAL reactions; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 4p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.4913975 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101475118&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ullery, Jody C. AU - Tarango, Melissa AU - Roth, Caleb C. AU - Ibey, Bennett L. T1 - Activation of autophagy in response to nanosecond pulsed electric field exposure. JO - Biochemical & Biophysical Research Communications JF - Biochemical & Biophysical Research Communications Y1 - 2015/03/06/ VL - 458 IS - 2 M3 - Article SP - 411 EP - 417 SN - 0006291X AB - Previous work demonstrated significant changes in cellular membranes following exposure of cells to nanosecond pulsed electric fields (nsPEF), including nanoporation and increases in intracellular calcium concentration. While it is known that nsPEF exposure can cause cell death, how cells repair and survive nsPEF-induced cellular damage is not well understood. In this paper, we investigated whether autophagy is stimulated following nsPEF exposure to repair damaged membranes, proteins, and/or organelles in a pro-survival response. We hypothesized that autophagy is activated to repair nsPEF-induced plasma membrane damage and overwhelming this compensatory mechanism results in cell death. Activation of autophagy and subsequent cell death pathways were assessed measuring toxicity, gene and protein expression of autophagy markers, and by monitoring autophagosome formation and maturation using fluorescent microscopy. Results show that autophagy is activated at subtoxic nsPEF doses, as a compensatory mechanism to repair membrane damage. However, prolonged exposure results in increased cell death and a concomitant decrease in autophagic markers. These results suggest that cells take an active role in membrane repair, through autophagy, following exposure to nsPEF. [ABSTRACT FROM AUTHOR] AB - Copyright of Biochemical & Biophysical Research Communications is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AUTOPHAGIC vacuoles KW - BIOCHEMICAL markers KW - CELL death KW - CELL membranes KW - ELECTRIC fields -- Physiological effect KW - PROTEIN expression KW - Autophagy KW - CHO KW - Nanosecond electric pulse N1 - Accession Number: 101249550; Ullery, Jody C. 1; Email Address: jody.ullery.ctr@us.af.mil Tarango, Melissa 1 Roth, Caleb C. 2 Ibey, Bennett L. 3; Affiliation: 1: General Dynamics Information Technology, JBSA Fort Sam Houston, TX, USA 2: School of Medicine, Department of Radiological Sciences, University of Texas Health Science Center San Antonio, San Antonio, TX 78229, USA 3: Air Force Research Laboratory, 711th Human Performance Wing, Human Effectiveness Directorate, Bioeffects Division, Radio Frequency Bioeffects Branch, JBSA Fort Sam Houston, TX, USA; Source Info: Mar2015, Vol. 458 Issue 2, p411; Subject Term: AUTOPHAGIC vacuoles; Subject Term: BIOCHEMICAL markers; Subject Term: CELL death; Subject Term: CELL membranes; Subject Term: ELECTRIC fields -- Physiological effect; Subject Term: PROTEIN expression; Author-Supplied Keyword: Autophagy; Author-Supplied Keyword: CHO; Author-Supplied Keyword: Nanosecond electric pulse; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.bbrc.2015.01.131 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101249550&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bridges, Elizabeth AU - Dukes, Susan AU - Serres, Jennifer T1 - Assessment of Pain in Less Severely III and Injured Aeromedical Evacuation Patients: A Prospective Field Study. JO - Military Medicine JF - Military Medicine Y1 - 2015/03/02/Mar2015 Supplement M3 - Article SP - 44 EP - 49 PB - AMSUS SN - 00264075 AB - Pain management is vitally important to injured patients being evacuated from the warzone. A prospective assessment of real-time ratings of pain acceptability, intensity, and satisfaction of a convenience sample of 114 less severely ill and injured U.S. military patients being evacuated on Aeromedical Evacuation (AE) missions from Ramstein Air Field, Germany, to Andrews Air Force Base, Maryland, was conducted. Data were collected before and during 12 AE flights in December 2012 and May 2013. Acceptable pain intensity was a median of 6/10 (range 2-9), with 76% of patients indicating an acceptable pain intensity greater than 4. During AE transport, 75% of patients reported at least one pain score ≥4. Despite these high pain ratings, there was documentation of administration for only 58% of routine and 48% for as-needed analgesics/adjuvants. Over 47% of patients experienced pain that exceeded their acceptable intensity level, but of those patients with pain that was more severe than acceptable, only 10% rated their satisfaction with their pain management as poor or fair. This is the first study to provide real-time concurrent assessment of pain and pain management during en route care. The worst pain was reported for the hospital to aircraft arrival, suggesting the need for interventions to safely optimize pain management during this handoff period. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PAIN measurement KW - RESEARCH KW - MILITARY personnel -- Wounds & injuries KW - MILITARY personnel -- Diseases KW - WAR -- Relief of sick & wounded KW - PAIN management KW - PATIENT satisfaction N1 - Accession Number: 101464864; Bridges, Elizabeth 1 Dukes, Susan 2 Serres, Jennifer 2; Affiliation: 1: University of Washington School of Nursing/Headquarters AF (SG1N), 1959 NE Pacific Box 357266, Seattle, WA 98195 2: Aeromedical Research Department, United States Air Force School of Aerospace Medicine, 2510 5th Street, Building 840, Wright-Patterson AFB, OH 45433; Source Info: Mar2015 Supplement, p44; Subject Term: PAIN measurement; Subject Term: RESEARCH; Subject Term: MILITARY personnel -- Wounds & injuries; Subject Term: MILITARY personnel -- Diseases; Subject Term: WAR -- Relief of sick & wounded; Subject Term: PAIN management; Subject Term: PATIENT satisfaction; Number of Pages: 6p; Illustrations: 4 Charts; Document Type: Article L3 - 10.7205/MILMED-D-14-00407 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101464864&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Greschik, Gyula AU - Mejia-Ariza, Juan M. AU - Murphey, Thomas M. AU - Jeon, Sungeun K. T1 - Error Suppression via Tension for Flexible Square Antenna Panels and Panel Arrays. JO - AIAA Journal JF - AIAA Journal Y1 - 2015/03// VL - 53 IS - 3 M3 - Article SP - 513 EP - 531 SN - 00011452 AB - The concept of passive surface error control via tension is explored for flexible square panels and for a rectangular array of such panels suspended with four catenaries. The panels are 1 nun thick 1 m square graphite-epoxy composite plates with a four-ply symmetric layup. Individual panel response to a uniform through-thickness temperature gradient field both alone and combined with in-plane tension (stretch) are examined. When integrated into a 2 x 5 grid (a simple phased array configuration), the effects of a transient slew are considered. Characteristic responses are identified and studied symbolically as well as numerically. The results demonstrate the feasibility of combined global and component-level error suppression for the considered structure, exercised singularly by global prestress that also maintains the integrity of the tension structure. Limited attention is paid to mission-specific issues such as stowage and deployment. Assuming an X-band radar context, surface errors are related to a 1 mm limit. Out-of-flatness is evaluated with three metrics relevant to different aspects of signal processing: the maximum depth of the deformed surface, its maximum lateral deviation from the best-fit plane, and the phased-array radiometric rms surface error. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ERROR analysis (Mathematics) KW - RESEARCH KW - AIRPLANES -- Design & construction -- Research KW - COMPOSITE plates KW - AEROSPACE engineering -- Research KW - AEROSPACE materials KW - COMPOSITE materials -- Research N1 - Accession Number: 102656671; Greschik, Gyula 1; Email Address: greschik@teguec.com Mejia-Ariza, Juan M. 2 Murphey, Thomas M. 3 Jeon, Sungeun K. 4; Affiliation: 1: Structural Engineer, TentGuild Engineering Company, Inc., Boulder, Colorado 80305 2: Senior Mechanical/Aerospace Engineer, L'Garde, Inc., Tustin, California 92780 3: Engineer, U.S. Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, New Mexico 87116 4: Project Engineer, Moog CSA Engineering, Albuquerque, New Mexico 87123; Source Info: Mar2015, Vol. 53 Issue 3, p513; Subject Term: ERROR analysis (Mathematics); Subject Term: RESEARCH; Subject Term: AIRPLANES -- Design & construction -- Research; Subject Term: COMPOSITE plates; Subject Term: AEROSPACE engineering -- Research; Subject Term: AEROSPACE materials; Subject Term: COMPOSITE materials -- Research; NAICS/Industry Codes: 336411 Aircraft Manufacturing; Number of Pages: 19p; Document Type: Article L3 - 10.2514/1.J052691 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102656671&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bhatia, Manav AU - Beran, Philip T1 - h-Adaptive Stabilized Finite-Element Solver for Calculation of Generalized Aerodynamic Forces. JO - AIAA Journal JF - AIAA Journal Y1 - 2015/03// VL - 53 IS - 3 M3 - Article SP - 554 EP - 572 SN - 00011452 AB - A finite-element method based on the streamline-upwind/Petrov-Galerkin stabilization technique is developed to solve the compressible Euler equations. The method is extended for computing unsteady small disturbances in the flow domain as a result of boundary motion, which is applied through the linearized solid-wall boundary condition. The method is able to calculate the frequency-dependent generalized aerodynamic forces without any need for deformation of mesh inside the flow' domain. Error estimates are used to drive automated h-refinement of mesh for steady-state and frequency-domain calculations. Steady-state solutions and generalized aerodynamic forces are compared to benchmark data for transonic and supersonic Mach numbers. The results show that the presence of shocks in the flow makes it difficult to use a single mesh for all computations, including the linearized flow. The h-refinement procedure is shown to be an effective way of ensuring reliable computations for the nonlinear and linearized solvers. Some associated challenges with the refinement procedure are also highlighted. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMIC load KW - RESEARCH KW - AERODYNAMICS -- Research KW - LIVE loads KW - LOADS (Mechanics) KW - FINITE element method N1 - Accession Number: 102656674; Bhatia, Manav 1,2; Email Address: manav.bhatia.ctr@wpafb.af.mil Beran, Philip 3; Email Address: philip.beran@wpafb.af.mil; Affiliation: 1: Research Engineer, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433 2: Assistant Professor, Department of Aerospace Engineering, Mississippi State University, 501 Hardy Rd., P.O. Drawer A, Mississippi State, MS 39762 3: Principal Research Aerospace Engineer, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433; Source Info: Mar2015, Vol. 53 Issue 3, p554; Subject Term: AERODYNAMIC load; Subject Term: RESEARCH; Subject Term: AERODYNAMICS -- Research; Subject Term: LIVE loads; Subject Term: LOADS (Mechanics); Subject Term: FINITE element method; Number of Pages: 19p; Document Type: Article L3 - 10.2514/1.J053128 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102656674&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martindale, Michael J. T1 - Evidence from Earth Observation Satellites: Emerging Legal Issues. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2015/03//Mar/Apr2015 VL - 29 IS - 2 M3 - Book Review SP - 183 EP - 185 PB - Superintendent of Documents SN - 1555385X KW - ARTIFICIAL satellites in earth sciences KW - NONFICTION KW - PURDY, Ray KW - LEUNG, Denise KW - EVIDENCE From Earth Observation Satellites: Emerging Legal Issues (Book) N1 - Accession Number: 101612247; Martindale, Michael J. 1; Affiliation: 1: US Air Force Academy; Source Info: Mar/Apr2015, Vol. 29 Issue 2, p183; Subject Term: ARTIFICIAL satellites in earth sciences; Subject Term: NONFICTION; Reviews & Products: EVIDENCE From Earth Observation Satellites: Emerging Legal Issues (Book); People: PURDY, Ray; People: LEUNG, Denise; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101612247&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martindale, Michael J. T1 - Evidence from Earth Observation Satellites: Emerging Legal Issues. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2015/03//Mar/Apr2015 Y1 - 2015/03//Mar/Apr2015 VL - 29 IS - 2 M3 - Book Review SP - 183 EP - 185 PB - Superintendent of Documents SN - 1555385X KW - EVIDENCE From Earth Observation Satellites: Emerging Legal Issues (Book) KW - PURDY, Ray KW - LEUNG, Denise KW - ARTIFICIAL satellites in earth sciences KW - NONFICTION N1 - Accession Number: 101612247; Source Information: Mar/Apr2015, Vol. 29 Issue 2, p183; Subject Term: EVIDENCE From Earth Observation Satellites: Emerging Legal Issues (Book); Subject Term: PURDY, Ray; Subject Term: LEUNG, Denise; Subject Term: ARTIFICIAL satellites in earth sciences; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=101612247&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - Gleason, Carolyn AU - Bennett, Mike T1 - What is AFIMSC and How Does it Fit into the Air Force's 30-Year Strategy? JO - Air Force Comptroller JF - Air Force Comptroller J1 - Air Force Comptroller PY - 2015///Spring2015 Y1 - 2015///Spring2015 VL - 48 IS - 1 M3 - Interview SP - 12 EP - 15 PB - United States Department of Defense SN - 00022365 AB - An interview with Major General Theresa C. Carter, commander of the U.S. Air Force is presented. She highlights the changes experience by the military members in different levels of service along with the support of multiple mission partners. She discusses the importance of installation and mission support activities in various military operations. She cites the concept of the Air Force Basic Doctrine in align with new defense strategy for power protection. KW - CARTER, Theresa C. -- Interviews KW - UNITED States. Air Force KW - MILITARY operations other than war -- Social aspects KW - STRATEGIC forces KW - MILITARY personnel -- Interviews N1 - Accession Number: 102885408; Source Information: Spring2015, Vol. 48 Issue 1, p12; Subject Term: CARTER, Theresa C. -- Interviews; Subject Term: UNITED States. Air Force; Subject Term: MILITARY operations other than war -- Social aspects; Subject Term: STRATEGIC forces; Subject Term: MILITARY personnel -- Interviews; Subject Term: ; Number of Pages: 4p; ; Document Type: Interview; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=102885408&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Michael, Chiaramonte AU - Jeffery, Cochran AU - David, Caswell T1 - Nurse preference rostering using agents and iterated local search. JO - Annals of Operations Research JF - Annals of Operations Research Y1 - 2015/03// VL - 226 IS - 1 M3 - Article SP - 443 EP - 461 SN - 02545330 AB - This study presents an iterative local search (ILS) framework used within an agent-based nurse rostering system. This agent based system with the ILS (CNR-ILS) is used to improve nurse rosters with respect to nurse preferences. The system is a heuristic that considers a variety of nurse considerations including informal requested days off, preferences for days-of-the-week off, and preferences for specific numbers of consecutive days off. Since our implementation is not subject to the complexity of mathematical programs, it includes more preference considerations. The system is extensively tested in a federal hospital and is compared to both an integer programming solution from the literature and the scheduling methodology currently used at the test facility. When nurses are surveyed, the solutions found by this system are consistently favored over the solutions from the integer program and hospital's current scheduling practice. Furthermore the variation of those ratings is significantly less. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of Operations Research is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCHEDULING KW - ITERATED integrals KW - INTEGER programming KW - NURSES -- Job descriptions KW - COMPUTATIONAL complexity KW - HEURISTIC programming KW - Agent programming KW - Agent scheduling KW - Iterated local search KW - Nurse rostering KW - Nurse scheduling KW - Staff scheduling N1 - Accession Number: 101005739; Michael, Chiaramonte 1; Email Address: michael.chiaramonte@gmail.com Jeffery, Cochran 2 David, Caswell 1; Affiliation: 1: Department of Computer Science, United States Air Force Academy, Colorado Springs 80840 USA 2: Department of Operational Sciences, Air Force Institute of Technology, WPAFB, Dayton 45433-7765 USA; Source Info: Mar2015, Vol. 226 Issue 1, p443; Subject Term: SCHEDULING; Subject Term: ITERATED integrals; Subject Term: INTEGER programming; Subject Term: NURSES -- Job descriptions; Subject Term: COMPUTATIONAL complexity; Subject Term: HEURISTIC programming; Author-Supplied Keyword: Agent programming; Author-Supplied Keyword: Agent scheduling; Author-Supplied Keyword: Iterated local search; Author-Supplied Keyword: Nurse rostering; Author-Supplied Keyword: Nurse scheduling; Author-Supplied Keyword: Staff scheduling; Number of Pages: 19p; Document Type: Article L3 - 10.1007/s10479-014-1701-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101005739&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Loukitcheva, M. AU - Solanki, S. K. AU - Carlsson, M. AU - White, S. M. T1 - Millimeter radiation from a 3D model of the solar atmosphere I. Diagnosing chromospheric thermal structure. JO - Astronomy & Astrophysics / Astronomie et Astrophysique JF - Astronomy & Astrophysics / Astronomie et Astrophysique Y1 - 2015/03// VL - 575 M3 - Article SP - 1 EP - 12 SN - 00046361 AB - Aims. We use advanced 3D non-local thermodynamic equilibrium radiative magnetohydrodynamic simulations of the solar atmosphere to carry out detailed tests of chromospheric diagnostics at millimeter and submillimeter wavelengths. Methods. We focused on the diagnostics of the thermal structure of the chromosphere in the wavelength bands from 0.4 mm up to 9.6 mm that can be accessed with the Atacama Large Millimeter/Submillimeter Array (ALMA) and investigated how these diagnostics are affected by the instrumental resolution. Results. We find that the formation height range of the millimeter radiation depends on the location in the simulation domain and is related to the underlying magnetic structure. Nonetheless, the brightness temperature is a reasonable measure of the gas temperature at the effective formation height at a given location on the solar surface. There is considerable scatter in this relationship, but this is significantly reduced when very weak magnetic fields are avoided. Our results indicate that although instrumental smearing reduces the correlation between brightness and temperature, millimeter brightness can still be used to reliably diagnose electron temperature up to a resolution of 1''. If the resolution is more degraded, then the value of the diagnostic diminishes rapidly. Conclusions. We conclude that millimeter brightness can image the chromospheric thermal structure at the height at which the radiation is formed. Thus multiwavelength observations with ALMA with a narrow step in wavelength should provide sufficient information for a tomographic imaging of the chromosphere. [ABSTRACT FROM AUTHOR] AB - Copyright of Astronomy & Astrophysics / Astronomie et Astrophysique is the property of EDP Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR radiation KW - SOLAR atmosphere KW - SOLAR chromosphere KW - THERMODYNAMIC equilibrium KW - MAGNETOHYDRODYNAMICS KW - ASTRONOMICAL observations KW - Sun: atmosphere KW - Sun: chromosphere KW - Sun: magnetic fields KW - Sun: radio radiation N1 - Accession Number: 101964522; Loukitcheva, M. 1,2; Email Address: marija@peterlink.ru Solanki, S. K. 1,3 Carlsson, M. 4 White, S. M. 5; Affiliation: 1: Max-Planck-Institut for Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077 Göttingen, Germany 2: Astronomical Institute, St. Petersburg University, Universitetskii pr. 28, 198504 St. Petersburg, Russia 3: School of Space Research, Kyung Hee University, Yongin, 446-701 Gyeonggi, Korea 4: Institute of Theoretical Astrophysics, University of Oslo, PO Box 1029, Blindern, 0315 Oslo, Norway 5: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, NM, USA; Source Info: Mar2015, Vol. 575, p1; Subject Term: SOLAR radiation; Subject Term: SOLAR atmosphere; Subject Term: SOLAR chromosphere; Subject Term: THERMODYNAMIC equilibrium; Subject Term: MAGNETOHYDRODYNAMICS; Subject Term: ASTRONOMICAL observations; Author-Supplied Keyword: Sun: atmosphere; Author-Supplied Keyword: Sun: chromosphere; Author-Supplied Keyword: Sun: magnetic fields; Author-Supplied Keyword: Sun: radio radiation; Number of Pages: 12p; Document Type: Article L3 - 10.1051/0004-6361/201425238 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101964522&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - AU - CARPENTER, MEGAN M.1 AU - GARNER, MARY2,3,4,5 T1 - NSFW: AN EMPIRICAL STUDY OF SCANDALOUS TRADEMARKS. JO - Cardozo Arts & Entertainment Law Journal JF - Cardozo Arts & Entertainment Law Journal J1 - Cardozo Arts & Entertainment Law Journal PY - 2015/03// Y1 - 2015/03// VL - 33 IS - 2 CP - 2 M3 - Article SP - 321 EP - 365 SN - 07367694 AB - This project is an empirical analysis of trademarks that have received rejections based on their "scandalous " nature. It is the first of its kind. The Lanham Act bars registration for trademarks that are "scandalous" and "immoral." While much has been written on the morality provisions in the Lanham Act, this piece is the first scholarly project that engages an empirical analysis of the Section 2(a) rejections based on scandalousness; it contains a look behind the scenes at how the morality provisions are applied throughout the trademark registration process. This study analyzes which marks are being rejected, what evidence is being used to reject them, and who the applicants are. Our data pays particularly close attention to the evidence used to determine whether a mark is scandalous. We also consider whether this bar is effective at removing these marks from the consumer marketplace. [ABSTRACT FROM AUTHOR] KW - Trademarks -- Law & legislation KW - Marketplaces KW - Consumption (Economics) KW - Counterfeits & counterfeiting KW - Consumer behavior N1 - Accession Number: 112135593; Authors: CARPENTER, MEGAN M. 1; GARNER, MARY 2,3,4,5; Affiliations: 1: Professor of Law and Director, Center for Law and Intellectual Property (CLIP), Texas A&M University School of Law; 2: B.S. Computer Science, Texas A&M University; 3: M.A. IT Management, Webster University; 4: Captain, United States Air Force; 5: Texas A&M University School of Law; Subject: Trademarks -- Law & legislation; Subject: Marketplaces; Subject: Consumption (Economics); Subject: Counterfeits & counterfeiting; Subject: Consumer behavior; Number of Pages: 45p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=asu&AN=112135593&site=ehost-live&scope=site DP - EBSCOhost DB - asu ER - TY - JOUR AU - Estepp, Justin R. AU - Christensen, James C. T1 - Electrode replacement does not affect classification accuracy in dual-session use of a passive brain-computer interface for assessing cognitive workload. JO - Frontiers in Neuroscience JF - Frontiers in Neuroscience Y1 - 2015/03// VL - 9 M3 - Article SP - 1 EP - 20 SN - 16624548 AB - The passive brain-computer interface (pBCI) framework has been shown to be a very promising construct for assessing cognitive and affective state in both individuals and teams. There is a growing body of work that focuses on solving the challenges of transitioning pBCI systems from the research laboratory environment to practical, everyday use. An interesting issue is what impact methodological variability may have on the ability to reliably identify (neuro)physiological patterns that are useful for state assessment. This work aimed at quantifying the effects of methodological variability in a pBCI design for detecting changes in cognitive workload. Specific focus was directed toward the effects of replacing electrodes over dual sessions (thus inducing changes in placement, electromechanical properties, and/or impedance between the electrode and skin surface) on the accuracy of several machine learning approaches in a binary classification problem. In investigating these methodological variables, it was determined that the removal and replacement of the electrode suite between sessions does not impact the accuracy of a number of learning approaches when trained on one session and tested on a second. This finding was confirmed by comparing to a control group for which the electrode suite was not replaced between sessions. This result suggests that sensors (both neurological and peripheral) may be removed and replaced over the course of many interactions with a pBCI system without affecting its performance. Future work on multi-session and multi-day pBCI system use should seek to replicate this (lack of) effect between sessions in other tasks, temporal time courses, and data analytic approaches while also focusing on non-stationarity and variable classification performance due to intrinsic factors. [ABSTRACT FROM AUTHOR] AB - Copyright of Frontiers in Neuroscience is the property of Frontiers Media S.A. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRODES KW - BRAIN-computer interfaces KW - COGNITIVE analysis KW - AFFECTIVE neuroscience KW - MACHINE learning KW - cognitive state KW - electroencephalography KW - machine learning KW - non-stationarity KW - passive brain computer interface N1 - Accession Number: 102325121; Estepp, Justin R. 1; Email Address: justin.estepp@us.af.mil Christensen, James C. 1; Affiliation: 1: Applied Neuroscience Branch, Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Mar2015, Vol. 9, p1; Subject Term: ELECTRODES; Subject Term: BRAIN-computer interfaces; Subject Term: COGNITIVE analysis; Subject Term: AFFECTIVE neuroscience; Subject Term: MACHINE learning; Author-Supplied Keyword: cognitive state; Author-Supplied Keyword: electroencephalography; Author-Supplied Keyword: machine learning; Author-Supplied Keyword: non-stationarity; Author-Supplied Keyword: passive brain computer interface; Number of Pages: 20p; Document Type: Article L3 - 10.3389/fnins.2015.00054 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102325121&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rajendran, Jeyavijayan AU - Karri, Ramesh AU - Rose, Garrett S. T1 - Improving Tolerance to Variations in Memristor-Based Applications Using Parallel Memristors. JO - IEEE Transactions on Computers JF - IEEE Transactions on Computers Y1 - 2015/03// VL - 64 IS - 3 M3 - Article SP - 733 EP - 746 SN - 00189340 AB - Memristors are being explored for a wide variety of applications such as neuromorphic computing, memory and digital logic. However, they suffer from process variations like any other nanodevice, which in turn impacts their applicability. The effect of process variations, specifically variation in thickness, is highly non-linear on memristors; the effect is greater near the lower memristance region (near Mon) than in the higher memristance region (near Moff). Due to this non-linear effect, many applications do not use the lower memristance values. Consequently, the application's functionality and performance is affected. In this work, we propose a technique called parallel memristors. In this technique, instead of using a single memristor, the application uses several memristors connected in parallel. Each memristor in this parallel structure is programmed to a higher memristance value to tolerate variations. Since many memristors are connected in parallel, the effective memristance value can be near the Mon value, thereby achieving high-speed operation. We evaluate the parallel memristor technique in two different applications—memristor-based threshold logic and memristor-based memory. We also perform various optimizations to tradeoff between variation tolerance, power, delay, and area. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Computers is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MEMRISTORS KW - NEURAL networks (Computer science) KW - COMPUTER logic KW - PARALLEL programming (Computer science) KW - LOGIC circuits KW - TECHNOLOGICAL innovations KW - Delays KW - Emerging technologies KW - logic design KW - Logic gates KW - memory design KW - Memristors KW - Optimization KW - Performance evaluation KW - Redundancy KW - reliability N1 - Accession Number: 100948935; Rajendran, Jeyavijayan 1 Karri, Ramesh 1 Rose, Garrett S. 2; Affiliation: 1: Electrical and Computer Engineering Department, Polytechnic Institute of New York University, Brooklyn, 11209 2: Trusted Systems Branch, Air Force Research Laboratory, Rome,; Source Info: Mar2015, Vol. 64 Issue 3, p733; Subject Term: MEMRISTORS; Subject Term: NEURAL networks (Computer science); Subject Term: COMPUTER logic; Subject Term: PARALLEL programming (Computer science); Subject Term: LOGIC circuits; Subject Term: TECHNOLOGICAL innovations; Author-Supplied Keyword: Delays; Author-Supplied Keyword: Emerging technologies; Author-Supplied Keyword: logic design; Author-Supplied Keyword: Logic gates; Author-Supplied Keyword: memory design; Author-Supplied Keyword: Memristors; Author-Supplied Keyword: Optimization; Author-Supplied Keyword: Performance evaluation; Author-Supplied Keyword: Redundancy; Author-Supplied Keyword: reliability; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TC.2014.2308189 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100948935&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hanson, Colin Q. AU - Kunz, Donald L. AU - Lindsley, Ned J. T1 - Investigation of Missile Control Surface Effects on F-16 Limit-Cycle Oscillation. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2015/03//Mar/Apr2015 VL - 52 IS - 2 M3 - Article SP - 462 EP - 470 SN - 00218669 AB - Tactical aircraft with thin wings and heavy external wing stores are susceptible to aeroelastic limit-cycle oscillations. This investigation applies both frequency-domain and time-domain solutions using aeroelastic computational models to predict limit-cycle oscillation onset, frequency, and amplitude on an F-16. The test configuration uses missile shapes with reconfigurable aerodynamic and mass properties. Statistical analysis of flight-test results identifies significant experimental variables of missile aerodynamic configuration, flight condition, and aircraft fuel state. Furthermore, statistical analysis permits the normalization of flight-test results for direct comparison to aeroelastic models. Results of the comparison show that flight-test data analysis mostly supports the prediction trends, but the magnitude of the aerodynamic effects due to the canards and fins is much less significant in the test data. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GUIDED missiles -- Control systems KW - RESEARCH KW - FLIGHT control KW - F-16 (Jet fighter plane) KW - OSCILLATIONS KW - LIMIT cycles KW - DIFFERENTIABLE dynamical systems N1 - Accession Number: 102200069; Hanson, Colin Q. 1 Kunz, Donald L. 1 Lindsley, Ned J. 2; Affiliation: 1: U.S. Air Force Institute of Technology, Wright-Patterson AFB, Ohio 45433 2: U.S. Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433; Source Info: Mar/Apr2015, Vol. 52 Issue 2, p462; Subject Term: GUIDED missiles -- Control systems; Subject Term: RESEARCH; Subject Term: FLIGHT control; Subject Term: F-16 (Jet fighter plane); Subject Term: OSCILLATIONS; Subject Term: LIMIT cycles; Subject Term: DIFFERENTIABLE dynamical systems; Number of Pages: 9p; Document Type: Article L3 - 10.2514/1.C032741 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102200069&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davis, James AU - Kim, Nam H. AU - Lind, Rick T1 - Control of the Flexural Axis of a Wing with Piezoelectric Actuation. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2015/03//Mar/Apr2015 VL - 52 IS - 2 M3 - Article SP - 584 EP - 594 SN - 00218669 AB - Through aeroelastic effects, the various structural parameters of a wing can have significant effects on the flight dynamics of any size of aerial vehicle. If these parameters could be manipulated in flight, the aeroelastic interactions could, in turn, be leveraged for control purposes. If done properly, this approach has the potential to yield a significant improvement over conventional control surfaces for highly aeroelastic vehicles in terms of maneuverability. In this paper, the preliminary analysis of a proposed structural system with this capability is presented. The proposed system is a combination of a highly flexible conventionally configured wing structure, piezoelectric actuation, and a feedback loop. This system embeds a haptic system into the rear spar of the wing, the effects of which are adjustable by means of a gain parameter. The analysis presented in this paper shows the feasibility of the design and effectiveness of an unoptimized configuration, relocating the flexural axis by approximately 22%. This preliminary analysis establishes that the presented structural-parameter-actuation design, termed flexural-axis control, is practical and realizable. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLEXURAL strength KW - RESEARCH KW - AIRPLANE wings KW - AIRFRAMES KW - PIEZOELECTRIC actuators KW - ACTUATORS -- Research N1 - Accession Number: 102200079; Davis, James 1; Email Address: james.davis.20@us.af.mil Kim, Nam H. 2; Email Address: nkim@ufl.edu Lind, Rick 2; Email Address: ricklind@ufl.edu; Affiliation: 1: U.S. Air Force Research Laboratory, Eglin Air Force Base, Florida 32542 2: University of Florida, Gainesville, Florida 32611; Source Info: Mar/Apr2015, Vol. 52 Issue 2, p584; Subject Term: FLEXURAL strength; Subject Term: RESEARCH; Subject Term: AIRPLANE wings; Subject Term: AIRFRAMES; Subject Term: PIEZOELECTRIC actuators; Subject Term: ACTUATORS -- Research; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.2514/1.C032776 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102200079&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hashemi, Araz AU - Yongcan Cao AU - Casbeer, David W. AU - George Yin T1 - Unmanned Aerial Vehicle Circumnavigation Using Noisy Range-Based Measurements Without Global Positioning System Information. JO - Journal of Dynamic Systems, Measurement, & Control JF - Journal of Dynamic Systems, Measurement, & Control Y1 - 2015/03// VL - 137 IS - 3 M3 - Article SP - 1 EP - 10 SN - 00220434 AB - This work develops and analyzes a control algorithm for an unmanned aerial vehicle (UAV) to circumnavigate an unknown target at a fixed radius when the UAV is unable to determine its location and heading. Using a relationship between range-rate and bearing angle (from the target), we formulate a control algorithm that uses the range-rate as a proxy for the bearing angle and adjusts the heading of the UAV accordingly. We consider the addition of measurement errors and model the system with a stochastic differential equation to carry out the analysis. A recurrence result is proven, establishing that the UAV will reach a neighborhood of the desired orbit infinite time, and a mollified control is presented to eliminate a portion of the recurrent set about the origin. Simulation studies are presented to support the analysis and compare the performance against other algorithms for the circumnavigation task. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Dynamic Systems, Measurement, & Control is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DRONE aircraft KW - RESEARCH KW - GLOBAL Positioning System KW - NOISE -- Measurement KW - COMPUTER algorithms KW - STOCHASTIC differential equations KW - VOYAGES around the world N1 - Accession Number: 102234085; Hashemi, Araz 1; Email Address: araz.hasheml@gmail.com Yongcan Cao 2 Casbeer, David W. 2 George Yin 3; Affiliation: 1: Department of Mathematics, Wayne State University, Detroit, Ml 48202 2: Control Science Center of Excellence, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 3: Professor Department of Mathematics, Wayne State University, Detroit, Ml 48202; Source Info: Mar2015, Vol. 137 Issue 3, p1; Subject Term: DRONE aircraft; Subject Term: RESEARCH; Subject Term: GLOBAL Positioning System; Subject Term: NOISE -- Measurement; Subject Term: COMPUTER algorithms; Subject Term: STOCHASTIC differential equations; Subject Term: VOYAGES around the world; Number of Pages: 10p; Document Type: Article L3 - 10.1115/1.4027979 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102234085&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhang, Liangmin AU - Steckling, Benjamin AU - Lucero, Adrian AU - Schmitt-Sody, Andreas AU - White, William AU - Shiffler, Donald T1 - Third-order optical nonlinearity effect of DNA- and polyvinylpyrrolidone-functionalized carbon nanotubes. JO - Journal of Nonlinear Optical Physics & Materials JF - Journal of Nonlinear Optical Physics & Materials Y1 - 2015/03// VL - 24 IS - 1 M3 - Article SP - -1 PB - World Scientific Publishing Company SN - 02188635 AB - We have used single-stranded DNA (ssDNA) and polyvinylpyrrolidone (PVP) to disperse multiwalled carbon nanotubes (MWNTs) in water solution through sonication and centrifuge procedures. The advantage of these two polymers is that they do not need toxic organic solvents to distribute the carbon nanotubes. The scanning electron microscope (SEM) technique has been used to investigate the interaction between polymer molecules and MWNTs. The images show that MWNTs can be distributed effectively into the two polymer solutions. The third-order optical susceptibility, nonlinear optical absorption coefficient and optical power limiting of these dispersions have been characterized experimentally using a femtosecond laser system with a tunable range of 750-850 nm. The imaginary part of the third-order optical susceptibility has also been computed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nonlinear Optical Physics & Materials is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR optics KW - SINGLE-stranded DNA KW - POVIDONE KW - MULTIWALLED carbon nanotubes KW - SONICATION KW - CENTRIFUGES KW - Multiwalled carbon nanotube KW - nonlinear optical absorption KW - optical power limiting KW - third-order optical nonlinear susceptibility KW - z-scan technique N1 - Accession Number: 103001079; Zhang, Liangmin 1 Steckling, Benjamin 2 Lucero, Adrian 3 Schmitt-Sody, Andreas 3 White, William 3 Shiffler, Donald 3; Affiliation: 1: Department of Physics, Physical Sciences and Geology, California State University - Stanislaus, Turlock, California 95382, USA 2: Arkansas Center for Laser Applications and Science, Department of Chemistry and Physics, Arkansas State University, State University, Arkansas 72467, USA 3: Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, New Mexico 87117, USA; Source Info: Mar2015, Vol. 24 Issue 1, p-1; Subject Term: NONLINEAR optics; Subject Term: SINGLE-stranded DNA; Subject Term: POVIDONE; Subject Term: MULTIWALLED carbon nanotubes; Subject Term: SONICATION; Subject Term: CENTRIFUGES; Author-Supplied Keyword: Multiwalled carbon nanotube; Author-Supplied Keyword: nonlinear optical absorption; Author-Supplied Keyword: optical power limiting; Author-Supplied Keyword: third-order optical nonlinear susceptibility; Author-Supplied Keyword: z-scan technique; NAICS/Industry Codes: 333999 All Other Miscellaneous General Purpose Machinery Manufacturing; NAICS/Industry Codes: 333990 All other general-purpose machinery manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1142/S0218863515500083 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103001079&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bergman, Michael S. AU - He, Xinjian AU - Joseph, Michael E. AU - Zhuang, Ziqing AU - Heimbuch, Brian K. AU - Shaffer, Ronald E. AU - Choe, Melanie AU - Wander, Joseph D. T1 - Correlation of Respirator Fit Measured on Human Subjects and a Static Advanced Headform. JO - Journal of Occupational & Environmental Hygiene JF - Journal of Occupational & Environmental Hygiene Y1 - 2015/03// VL - 12 IS - 3 M3 - Article SP - 163 EP - 171 PB - Taylor & Francis Ltd SN - 15459624 AB - This study assessed the correlation of N95 filtering facepiece respirator (FFR) fit between a Static Advanced Headform (StAH) and 10 human test subjects. Quantitative fit evaluations were performed on test subjects who made three visits to the laboratory. On each visit, one fit evaluation was performed on eight different FFRs of various model/size variations. Additionally, subject breathing patterns were recorded. Each fit evaluation comprised three two-minute exercises: “Normal Breathing,” “Deep Breathing,” and again “Normal Breathing.” The overall test fit factors (FF) for human tests were recorded. The same respirator samples were later mounted on the StAH and the overall test manikin fit factors (MFF) were assessed utilizing the recorded human breathing patterns. Linear regression was performed on the mean log10-transformedFFandMFFvalues to assess the relationship between the values obtained from humans and the StAH. This is the first study to report a positive correlation of respirator fit between a headform and test subjects. The linear regression by respirator resulted inR2= 0.95, indicating a strong linear correlation betweenFFandMFF. For all respirators the geometric mean (GM)FFvalues were consistently higher than those of the GMMFF. For 50% of respirators, GMFFand GMMFFvalues were significantly different between humans and the StAH. For data grouped by subject/respirator combinations, the linear regression resulted inR2= 0.49. A weaker correlation (R2= 0.11) was found using only data paired by subject/respirator combination where both the test subject and StAH had passed a real-time leak check before performing the fit evaluation. For six respirators, the difference in passing rates between the StAH and humans was < 20%, while two respirators showed a difference of 29% and 43%. For data by test subject, GMFFand GMMFFvalues were significantly different for 40% of the subjects. Overall, the advanced headform system has potential for assessing fit for some N95 FFR model/sizes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Occupational & Environmental Hygiene is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Factor analysis KW - Occupational hazards KW - Breathing apparatus -- Evaluation KW - Environmental exposure -- Prevention KW - Medical protocols KW - Regression analysis KW - Breathing apparatus KW - Product design KW - Quantitative research KW - Data analysis -- Software KW - Pennsylvania KW - advanced headform KW - filtering facepiece respirator KW - fit test KW - N95 N1 - Accession Number: 100717928; Bergman, Michael S. 1; He, Xinjian 1,2; Joseph, Michael E. 1; Zhuang, Ziqing 1; Heimbuch, Brian K. 3; Shaffer, Ronald E. 1; Choe, Melanie 4; Wander, Joseph D. 5; Affiliations: 1: National Personal Protective Technology Laboratory, National Institute for Occupational Safety and Health, Pittsburgh, Pennsylvania; 2: Department of Industrial and Management Systems Engineering, West Virginia University, Morgantown, West Virginia; 3: Applied Research Associates, Inc., Panama City, Florida; 4: Office of Assistant Secretary for Preparedness and Response, Biomedical Advanced Research and Development Authority, U.S. Department of Health and Human Services, Washington, DC; 5: Air Force Civil Engineer Center, Tyndall Air Force Base, Florida; Issue Info: Mar2015, Vol. 12 Issue 3, p163; Thesaurus Term: Factor analysis; Thesaurus Term: Occupational hazards; Subject Term: Breathing apparatus -- Evaluation; Subject Term: Environmental exposure -- Prevention; Subject Term: Medical protocols; Subject Term: Regression analysis; Subject Term: Breathing apparatus; Subject Term: Product design; Subject Term: Quantitative research; Subject Term: Data analysis -- Software; Subject: Pennsylvania; Author-Supplied Keyword: advanced headform; Author-Supplied Keyword: filtering facepiece respirator; Author-Supplied Keyword: fit test; Author-Supplied Keyword: N95; NAICS/Industry Codes: 541420 Industrial Design Services; Number of Pages: 9p; Illustrations: 3 Diagrams, 3 Charts, 4 Graphs; Document Type: Article L3 - 10.1080/15459624.2014.957832 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=100717928&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 103748382 T1 - Correlation of Respirator Fit Measured on Human Subjects and a Static Advanced Headform. AU - Bergman, Michael S. AU - He, Xinjian AU - Joseph, Michael E. AU - Zhuang, Ziqing AU - Heimbuch, Brian K. AU - Shaffer, Ronald E. AU - Choe, Melanie AU - Wander, Joseph D. Y1 - 2015/03// N1 - Accession Number: 103748382. Language: English. Entry Date: 20150209. Revision Date: 20160822. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Double Blind Peer Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 101189458. KW - Respiratory Protective Devices -- Utilization KW - Respiratory Protective Devices -- Evaluation KW - Occupational Exposure -- Prevention and Control KW - Equipment Design KW - Simulations KW - Human KW - Pennsylvania KW - Data Analysis Software KW - Quantitative Studies KW - Linear Regression KW - Factor Analysis KW - Respiratory Protective Devices -- Classification KW - Protocols SP - 163 EP - 171 JO - Journal of Occupational & Environmental Hygiene JF - Journal of Occupational & Environmental Hygiene JA - J OCCUP ENVIRON HYG VL - 12 IS - 3 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - This study assessed the correlation of N95 filtering facepiece respirator (FFR) fit between a Static Advanced Headform (StAH) and 10 human test subjects. Quantitative fit evaluations were performed on test subjects who made three visits to the laboratory. On each visit, one fit evaluation was performed on eight different FFRs of various model/size variations. Additionally, subject breathing patterns were recorded. Each fit evaluation comprised three two-minute exercises: “Normal Breathing,” “Deep Breathing,” and again “Normal Breathing.” The overall test fit factors (FF) for human tests were recorded. The same respirator samples were later mounted on the StAH and the overall test manikin fit factors (MFF) were assessed utilizing the recorded human breathing patterns. Linear regression was performed on the mean log10-transformedFFandMFFvalues to assess the relationship between the values obtained from humans and the StAH. This is the first study to report a positive correlation of respirator fit between a headform and test subjects. The linear regression by respirator resulted inR2= 0.95, indicating a strong linear correlation betweenFFandMFF. For all respirators the geometric mean (GM)FFvalues were consistently higher than those of the GMMFF. For 50% of respirators, GMFFand GMMFFvalues were significantly different between humans and the StAH. For data grouped by subject/respirator combinations, the linear regression resulted inR2= 0.49. A weaker correlation (R2= 0.11) was found using only data paired by subject/respirator combination where both the test subject and StAH had passed a real-time leak check before performing the fit evaluation. For six respirators, the difference in passing rates between the StAH and humans was < 20%, while two respirators showed a difference of 29% and 43%. For data by test subject, GMFFand GMMFFvalues were significantly different for 40% of the subjects. Overall, the advanced headform system has potential for assessing fit for some N95 FFR model/sizes. SN - 1545-9624 AD - National Personal Protective Technology Laboratory, National Institute for Occupational Safety and Health, Pittsburgh, Pennsylvania AD - National Personal Protective Technology Laboratory, National Institute for Occupational Safety and Health, Pittsburgh, Pennsylvania; Department of Industrial and Management Systems Engineering, West Virginia University, Morgantown, West Virginia AD - Applied Research Associates, Inc., Panama City, Florida AD - Office of Assistant Secretary for Preparedness and Response, Biomedical Advanced Research and Development Authority, U.S. Department of Health and Human Services, Washington, DC AD - Air Force Civil Engineer Center, Tyndall Air Force Base, Florida U2 - PMID: 25265037. DO - 10.1080/15459624.2014.957832 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=103748382&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Diseati, Lori AU - Scheinfeldt, Laura B. AU - Kasper, Rachel S. AU - Zhaoyang, Ruixue AU - Gharani, Neda AU - Schmidlen, Tara J. AU - Gordon, Erynn S. AU - Sessions, Cecili K. AU - Delaney, Susan K. AU - Jarvis, Joseph P. AU - Gerry, Norman AU - Christman, Michael T1 - Common Genetic Risk for Melanoma Encourages Preventive Behavior Change. JO - Journal of Personalized Medicine JF - Journal of Personalized Medicine Y1 - 2015/03// VL - 5 IS - 1 M3 - Article SP - 36 EP - 49 SN - 20754426 AB - There is currently great interest in using genetic risk estimates for common disease in personalized healthcare. Here we assess melanoma risk-related preventive behavioral change in the context of the Coriell Personalized Medicine Collaborative (CPMC). As part of on-going reporting activities within the project, participants received a personalized risk assessment including information related to their own self-reported family history of melanoma and a genetic risk variant showing a moderate effect size (1.7, 3.0 respectively for heterozygous and homozygous individuals). Participants who opted to view their report were sent an optional outcome survey assessing risk perception and behavioral change in the months that followed. Participants that report family history risk, genetic risk, or both risk factors for melanoma were significantly more likely to increase skin cancer preventive behaviors when compared to participants with neither risk factor (ORs = 2.04, 2.79, 4.06 and p-values = 0.02, 2.86 × 10-5, 4.67 × 10-5, respectively), and we found the relationship between risk information and behavior to be partially mediated by anxiety. Genomic risk assessments appear to encourage positive behavioral change in a manner that is complementary to family history risk information and therefore may represent a useful addition to standard of care for melanoma prevention. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Personalized Medicine is the property of MDPI Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MELANOMA KW - NEUROENDOCRINE tumors KW - GENETICS KW - DISEASES KW - INDIVIDUALIZED medicine KW - MEDICAL care KW - BEHAVIOR modification KW - genetic KW - melanoma KW - prevention N1 - Accession Number: 101851010; Diseati, Lori 1; Email Address: lori.diseati@us.af.mil Scheinfeldt, Laura B. 2; Email Address: lscheinfeldt@coriell.org Kasper, Rachel S. 2; Email Address: rskasper@comcast.net Zhaoyang, Ruixue 2; Email Address: rzhaoyang@coriell.org Gharani, Neda 2; Email Address: gharani.consulting@gmail.com Schmidlen, Tara J. 2; Email Address: tschmidlen@coriell.org Gordon, Erynn S. 2,3; Email Address: egordon@23andme.com Sessions, Cecili K. 1; Email Address: cecili.sessions@us.af.mil Delaney, Susan K. 2; Email Address: sdelaney@coriell.org Jarvis, Joseph P. 2; Email Address: jjarvis@coriell.org Gerry, Norman 2; Email Address: ngerry@coriell.org Christman, Michael 2; Email Address: christman@coriell.org; Affiliation: 1: United States Air Force Medical Services, 7700 Arlington Boulevard, Falls Church, VA 22042, USA 2: Coriell Institute for Medical Research, 403 Haddon Ave, Camden, NJ 08103, USA 3: 23 and Me, Inc., 1390 Shorebird Way, Mountain View, CA 94043, USA; Source Info: 2015, Vol. 5 Issue 1, p36; Subject Term: MELANOMA; Subject Term: NEUROENDOCRINE tumors; Subject Term: GENETICS; Subject Term: DISEASES; Subject Term: INDIVIDUALIZED medicine; Subject Term: MEDICAL care; Subject Term: BEHAVIOR modification; Author-Supplied Keyword: genetic; Author-Supplied Keyword: melanoma; Author-Supplied Keyword: prevention; Number of Pages: 14p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101851010&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ferguson, Dale C. AU - Hilmer, Robert V. AU - Davis, Victoria A. T1 - Best Geosynchronous Earth Orbit Daytime Spacecraft Charging Index. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2015/03//Mar/Apr2015 VL - 52 IS - 2 M3 - Article SP - 526 EP - 543 SN - 00224650 AB - Recently, the debate on what is the best daytime Geosynchronous Earth Orbit spacecraft charging index has been reopened. In this paper, the conclusions of one of the recent papers on the subject are verified by comparing Nascap-2k results with charging and fluxes measured on the Spacecraft Charging at the High Altitudes, Intelsat, Defense Satellite Communications System, and Los Alamos National Laboratory Geosynchronous Earth Orbit satellites. In addition, a refined measure of charging is presented as the total thermal electron flux above a certain minimum energy that is well above the second crossover point in secondary electron emission. The use of this type of index is justified by correlations between Nascap-2k simulation results and total fluxes above a range of energies. The best minimum energy to use is determined for spacecraft of different design and surface materials. Finally, the optimum Geosynchronous Earth Orbit daytime spacecraft charging index is obtained, and its use for predicting and resolving spacecraft anomalies in real time is justified. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GEOSYNCHRONOUS orbits KW - RESEARCH KW - GEOSTATIONARY satellites KW - SPACE vehicles research KW - ARTIFICIAL satellites in telecommunication -- Research KW - ORBITS of artificial satellites N1 - Accession Number: 102071071; Ferguson, Dale C. 1 Hilmer, Robert V. 1 Davis, Victoria A. 2; Affiliation: 1: U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117 2: Leidos, Inc., San Diego, California 92121; Source Info: Mar/Apr2015, Vol. 52 Issue 2, p526; Subject Term: GEOSYNCHRONOUS orbits; Subject Term: RESEARCH; Subject Term: GEOSTATIONARY satellites; Subject Term: SPACE vehicles research; Subject Term: ARTIFICIAL satellites in telecommunication -- Research; Subject Term: ORBITS of artificial satellites; NAICS/Industry Codes: 517410 Satellite Telecommunications; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 18p; Document Type: Article L3 - 10.2514/1.A32959 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102071071&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ardelean, Emil V. AU - Babuška, Vít AU - Goodding, James C. AU - Coombs, Douglas M. AU - Robertson III, Lawrence M. AU - Lane, Steven A. T1 - Cable Effects Study: Tangents, Rabbit Holes, Dead Ends, and Valuable Results. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2015/03//Mar/Apr2015 VL - 52 IS - 2 M3 - Article SP - 569 EP - 583 SN - 00224650 AB - Lessons learned during a study on the effects that electrical power and signal wiring harness cables introduce on the dynamic response of precision spacecraft is presented, along with the most significant results. The study was a three year effort to discover a set of practical approaches for updating well-defined dynamic models of harness-free structures where knowledge of the cable type, position, and tie-down method are known. Although cables are found on every satellite, the focus was on precision, low damping, and very flexible structures. Obstacles encountered, classified as tangents, rabbit holes, and dead ends, offer practical lessons for structural dynamics research. The paper traces the historical, experiential progression of the project, describing how the obstacles affected the project. First, methods were developed to estimate cable properties. Problems were encountered because of the flexible, highly damped nature of cables. A beam was used as a test article to validate experimentally derived cable properties and to refine the assumptions regarding boundary conditions. A spacecraft bus-like panel with cables attached was designed, and finite element models were developed and validated through experiment. Various paths were investigated at each stage before a consistent test and analysis methodology was developed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles research KW - ELECTRIC power -- Research KW - FINITE element method KW - RESEARCH KW - BOUNDARY value problems KW - DAMPING (Mechanics) N1 - Accession Number: 102071075; Ardelean, Emil V. 1 Babuška, Vít 2,3; Email Address: vbabusk@sandia.gov Goodding, James C. 4 Coombs, Douglas M. 4; Email Address: dcoombs@csaengineering.com Robertson III, Lawrence M. 5; Email Address: lawrence.robertson@us.af.mi Lane, Steven A. 5; Email Address: steven.lane.1@us.af.mil; Affiliation: 1: Schafer Corporation, Albuquerque, New Mexico 87106 2: Sandia National Laboratories, Albuquerque, New Mexico 87185 3: Senior Engineer/Scientist, 2309 Renard Place SE, Suite 300. Senior Member AIAA 4: Moog CSA Engineering, Albuquerque, New Mexico 87123 5: U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117; Source Info: Mar/Apr2015, Vol. 52 Issue 2, p569; Subject Term: SPACE vehicles research; Subject Term: ELECTRIC power -- Research; Subject Term: FINITE element method; Subject Term: RESEARCH; Subject Term: BOUNDARY value problems; Subject Term: DAMPING (Mechanics); NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 15p; Document Type: Article L3 - 10.2514/1.A32792 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102071075&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anneken, David AU - Striebich, Richard AU - DeWitt, Matthew J. AU - Klingshirn, Christopher AU - Corporan, Edwin T1 - Development of methodologies for identification and quantification of hazardous air pollutants from turbine engine emissions. JO - Journal of the Air & Waste Management Association (Taylor & Francis Ltd) JF - Journal of the Air & Waste Management Association (Taylor & Francis Ltd) Y1 - 2015/03// VL - 65 IS - 3 M3 - Article SP - 336 EP - 346 SN - 10962247 AB - Aircraft turbine engines are a significant source of particulate matter (PM) and gaseous emissions in the vicinity of airports and military installations. Hazardous air pollutants (HAPs) (e.g., formaldehyde, benzene, naphthalene and other compounds) associated with aircraft emissions are an environmental concern both in flight and at ground level. Therefore, effective sampling, identification, and accurate measurement of these trace species are important to assess their environmental impact. This effort evaluates two established ambient air sampling and analysis methods, U.S. Environmental Protection Agency (EPA) Method TO-11A and National Institute for Occupational Safety and Health (NIOSH) Method 1501, for potential use to quantify HAPs from aircraft turbine engines. The techniques were used to perform analysis of the exhaust from a T63 turboshaft engine, and were examined using certified gas standards transferred through the heated sampling systems used for engine exhaust gaseous emissions measurements. Test results show that the EPA Method TO-11A (for aldehydes) and NIOSH Method 1501 (for semivolatile hydrocarbons) were effective techniques for the sampling and analysis of most HAPs of interest. Both methods showed reasonable extraction efficiencies of HAP species from the sorbent tubes, with the exception of acrolein, styrene, and phenol, which were not well quantified. Formaldehyde measurements using dinitrophenylhydrazine (DNPH) tubes (EPA method TO-11A) were accurate for gas-phase standards, and compared favorably to measurements using gas-phase Fourier-transform infrared (FTIR) spectroscopy. In general, these two standard methodologies proved to be suitable techniques for field measurement of turbine engine HAPs within a reasonable (5–10 minutes) sampling period. Details of the tests, the analysis methods, calibration procedures, and results from the gas standards and T63 engine tested using a conventional JP-8 jet fuel are provided. Implications: HAPs from aviation-related sources are important because of their adverse health and environmental impacts in and around airports and flight lines. Simpler, more convenient techniques to measure the important HAPs, especially aldehydes and volatile organic HAPs, are needed to provide information about their occurrence and assist in the development of engines that emit fewer harmful emissions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Air & Waste Management Association (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIR pollutants KW - TURBINES KW - EMISSIONS (Air pollution) KW - PARTICULATE matter KW - ENVIRONMENTAL impact analysis KW - FOURIER transform infrared spectroscopy KW - UNITED States. Environmental Protection Agency KW - NATIONAL Institute for Occupational Safety & Health N1 - Accession Number: 101101714; Anneken, David 1 Striebich, Richard 1 DeWitt, Matthew J. 1 Klingshirn, Christopher 1 Corporan, Edwin 2; Affiliation: 1: University of Dayton Research Institute, Dayton, OH, USA 2: Air Force Research Laboratory, Fuels Branch AFRL/RQTF, WPAFB, Dayton, OH, USA; Source Info: Mar2015, Vol. 65 Issue 3, p336; Subject Term: AIR pollutants; Subject Term: TURBINES; Subject Term: EMISSIONS (Air pollution); Subject Term: PARTICULATE matter; Subject Term: ENVIRONMENTAL impact analysis; Subject Term: FOURIER transform infrared spectroscopy; Company/Entity: UNITED States. Environmental Protection Agency Company/Entity: NATIONAL Institute for Occupational Safety & Health; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; NAICS/Industry Codes: 924110 Administration of Air and Water Resource and Solid Waste Management Programs; Number of Pages: 11p; Document Type: Article L3 - 10.1080/10962247.2014.991855 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101101714&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bianchini, Alessandra AU - Gonzalez, Carlos R. T1 - Reformulation of the Design Procedure for Aggregate-Surfaced Airfield Pavements. JO - Journal of Transportation Engineering JF - Journal of Transportation Engineering Y1 - 2015/03// VL - 141 IS - 3 M3 - Article SP - 04014086 EP - 04014086 SN - 0733947X AB - During military contingency operations, aircraft are required to land, taxi, and takeoff on unpaved surfaces. In some cases, operational time limitations do not allow for the construction of paved surfaces to establish airfield operations. The original flexible pavement design procedure for paved surfaces, which is based on the California Bearing Ratio (CBR) and the -factor (Alpha-factor), was extended and applied to the design and evaluation of aggregate-surfaced pavements. With the reformulation of the CBR-Alpha for the design of flexible pavements, efforts were also directed at defining a new equation for the design of aggregate-surfaced airfields. This paper focuses on the development of a new CBR-Beta procedure for the design and evaluation of aggregate-surfaced airfields. Data from previous studies conducted on aggregate-surfaced full-scale test sections were used for this purpose. The new performance curve proposed in this paper for aggregate-surfaced airfields has the same format as the equation that was proposed and accepted for flexible pavements. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Transportation Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PAVEMENTS -- Design & construction KW - AIRPORTS KW - REFORMULATION (Mathematical programming) KW - SPECIAL operations (Military science) KW - FLEXIBLE pavements KW - CALIFORNIA KW - Airfield pavement KW - Design procedure KW - Fröhlich stress distribution KW - Unsurfaced pavement N1 - Accession Number: 101024481; Bianchini, Alessandra 1 Gonzalez, Carlos R. 2; Affiliation: 1: Airbase Recovery and Acquisition Subject Matter Expert, Air Force Civil Engineer Center (AFCEC/CXAE), 139 Barnes Dr., Suite 2, Tyndall Air Force Base, FL 32403; formerly, Research Civil Engineer, U.S. Army Engineer Research and Development Center, Vicksburg, MS 39180-6199 (corresponding author). E-mail: 2: Research Civil Engineer, U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Rd., Vicksburg, MS 39180-6199. E-mail:; Source Info: Mar2015, Vol. 141 Issue 3, p04014086; Subject Term: PAVEMENTS -- Design & construction; Subject Term: AIRPORTS; Subject Term: REFORMULATION (Mathematical programming); Subject Term: SPECIAL operations (Military science); Subject Term: FLEXIBLE pavements; Subject Term: CALIFORNIA; Author-Supplied Keyword: Airfield pavement; Author-Supplied Keyword: Design procedure; Author-Supplied Keyword: Fröhlich stress distribution; Author-Supplied Keyword: Unsurfaced pavement; NAICS/Industry Codes: 488119 Other Airport Operations; NAICS/Industry Codes: 237310 Highway, Street, and Bridge Construction; NAICS/Industry Codes: 238990 All Other Specialty Trade Contractors; Number of Pages: 12p; Document Type: Article L3 - 10.1061/(ASCE)TE.1943-5436.0000752 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101024481&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Yangcheng AU - Maslov, Alexey V. AU - Limberopoulos, Nicholaos I. AU - Urbas, Augustine M. AU - Astratov, Vasily N. T1 - Spectrally resolved resonant propulsion of dielectric microspheres. JO - Laser & Photonics Reviews JF - Laser & Photonics Reviews Y1 - 2015/03// VL - 9 IS - 2 M3 - Article SP - 263 EP - 273 SN - 18638880 AB - Use of resonant light forces opens up a unique approach to high-volume sorting of microspherical resonators with much higher uniformity of resonances compared to that in coupled-cavity structures obtained by the best semiconductor technologies. In this work, the spectral response of the propulsion forces exerted on polystyrene microspheres near tapered microfibers is directly observed. The measurements are based on the control of the detuning between the tunable laser and internal resonances in each sphere with accuracy higher than the width of the resonances. The measured spectral shape of the propulsion forces correlates well with the whispering-gallery mode resonances in the microspheres. The existence of a stable radial trap for the microspheres propelled along the taper is demonstrated. The giant force peaks observed for 20-μm spheres are found to be in a good agreement with a model calculation demonstrating an efficient use of the light momentum for propelling the microspheres. [ABSTRACT FROM AUTHOR] AB - Copyright of Laser & Photonics Reviews is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRICS -- Research KW - PROPULSION systems KW - RESEARCH KW - RESONATORS KW - MICROSPHERES KW - SEMICONDUCTORS -- Research KW - cavity optomechanics KW - microspheres KW - optical propulsion KW - tapered microfiber KW - whispering-gallery modes N1 - Accession Number: 101588425; Li, Yangcheng 1 Maslov, Alexey V. 2 Limberopoulos, Nicholaos I. 3 Urbas, Augustine M. 4 Astratov, Vasily N. 1,3; Affiliation: 1: Department of Physics and Optical Science, Center for Optoelectronics and Optical Communications, University of North Carolina at Charlotte 2: Department of Radiophysics, University of Nizhny Novgorod 3: Air Force Research Laboratory, Sensors Directorate 4: Air Force Research Laboratory, Materials and Manufacturing Directorate; Source Info: Mar2015, Vol. 9 Issue 2, p263; Subject Term: DIELECTRICS -- Research; Subject Term: PROPULSION systems; Subject Term: RESEARCH; Subject Term: RESONATORS; Subject Term: MICROSPHERES; Subject Term: SEMICONDUCTORS -- Research; Author-Supplied Keyword: cavity optomechanics; Author-Supplied Keyword: microspheres; Author-Supplied Keyword: optical propulsion; Author-Supplied Keyword: tapered microfiber; Author-Supplied Keyword: whispering-gallery modes; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1002/lpor.201400237 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101588425&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Konkova, T. AU - Mironov, S. AU - Korznikov, A. AU - Korznikova, G. AU - Myshlyaev, M.M. AU - Semiatin, S.L. T1 - An EBSD investigation of cryogenically-rolled Cu–30%Zn brass. JO - Materials Characterization JF - Materials Characterization Y1 - 2015/03// VL - 101 M3 - Article SP - 173 EP - 179 SN - 10445803 AB - Electron backscatter diffraction was used to study grain structure development in heavily cryogenically-rolled Cu–30%Zn brass. The produced microstructure was found to be very inhomogeneous. At a relatively coarse scale, it consisted of texture bands having crystallographic orientations close to the α- and γ-fibers. The texture bands contained internal structure comprising shear bands, mechanical twins, and low-angle boundaries. Such features were more pronounced within the γ-fiber, and this resulted in a heterogeneous ultrafine grain structure. The cryogenic rolling was concluded to be not straightforward for production of nanocrystalline grain structure in Cu–30%Zn brass. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Characterization is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COPPER-zinc alloys KW - ELECTRONS -- Backscattering KW - ELECTRON diffraction KW - CRYOGENICS KW - BRASS KW - MICROSTRUCTURE KW - Cryogenic deformation KW - Cu–30Zn brass KW - Electron backscatter diffraction KW - Grain refinement KW - Grain structure KW - Texture N1 - Accession Number: 103024283; Konkova, T. 1 Mironov, S. 1,2; Email Address: smironov@material.tohoku.ac.jp Korznikov, A. 1,3 Korznikova, G. 1 Myshlyaev, M.M. 4 Semiatin, S.L. 5; Affiliation: 1: Institute for Metals Superplasticity Problems, Russian Academy of Science, 39 Khalturin Str., Ufa 450001, Russia 2: Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Sendai 980-8579, Japan 3: National Research Tomsk State University, 36 Lenina av., Tomsk 634050, Russia 4: Baikov Institute of Metallurgy and Material Science, Russian Academy of Science, 49 Lenin-av., Moscow 119991, Russia 5: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Mar2015, Vol. 101, p173; Subject Term: COPPER-zinc alloys; Subject Term: ELECTRONS -- Backscattering; Subject Term: ELECTRON diffraction; Subject Term: CRYOGENICS; Subject Term: BRASS; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: Cryogenic deformation; Author-Supplied Keyword: Cu–30Zn brass; Author-Supplied Keyword: Electron backscatter diffraction; Author-Supplied Keyword: Grain refinement; Author-Supplied Keyword: Grain structure; Author-Supplied Keyword: Texture; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.matchar.2015.02.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103024283&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lim, Hyung Jin AU - Sohn, Hoon AU - De Simio, Martin P. AU - Brown, Kevin T1 - Corrigendum to “Reference-free fatigue crack detection using nonlinear ultrasonic modulation under various temperature and loading conditions” [Mech. Syst. Signal Process. 45 (2) (2014) 468–478]. JO - Mechanical Systems & Signal Processing JF - Mechanical Systems & Signal Processing Y1 - 2015/03// VL - 54/55 M3 - Article SP - 506 EP - 506 SN - 08883270 KW - ERRATA (Publishing) KW - FATIGUE cracks KW - TEMPERATURE effect KW - NONLINEAR analysis KW - LOADS (Mechanics) KW - MODULATION (Electronics) N1 - Accession Number: 99831446; Lim, Hyung Jin 1 Sohn, Hoon 1; Email Address: hoonsohn@kaist.ac.kr De Simio, Martin P. 2 Brown, Kevin 3; Affiliation: 1: Department of Civil and Environmental Engineering, KAIST, Daejeon 305-701, South Korea 2: University of Dayton Research Institute, Dayton, OH 45469, United States 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45430, United States; Source Info: Mar2015, Vol. 54/55, p506; Subject Term: ERRATA (Publishing); Subject Term: FATIGUE cracks; Subject Term: TEMPERATURE effect; Subject Term: NONLINEAR analysis; Subject Term: LOADS (Mechanics); Subject Term: MODULATION (Electronics); Number of Pages: 1p; Document Type: Article L3 - 10.1016/j.ymssp.2014.08.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99831446&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nam-Goo Kang AU - Ken Kokubo AU - Seaho Jeon AU - Min Wang AU - Chang-Lyoul Lee AU - Canteenwala, Taizoon AU - Loon-Seng Tan AU - Chiang, Long Y. T1 - Synthesis and Photoluminescent Properties of Geometrically Hindered cis-Tris(diphenylaminofluorene) as Precursors to Light-Emitting Devices. JO - Molecules JF - Molecules Y1 - 2015/03// VL - 20 IS - 3 M3 - Article SP - 4635 EP - 4654 SN - 14203049 AB - A novel highly luminescent tris-fluorenyl ring-interconnected chromophore tris(DPAF-C9) was synthesized using a C3 symmetrical triaminobenzene core as the synthon. This structure bears three light-harvesting 2-diphenylamino-9,9-dialkylfluorenyl (DPAF) ring moieties with each attached by two branched 3',5',5'-trimethylhexyl (C9) arms. A major stereoisomer was chromatographically isolated and characterized to possess a 3D structural configuration of cis-conformer in a cup-form. Molecular calculation at B3LYP/6-31G* level revealed the unexpected stability of this cis-cup-conformer of tris(DPAF-C9) better than that of the stereoisomer in a propeller-form and the trans-conformer. The structural geometry is proposed to be capable of minimizing the aggregation related self-quenching effect in the condensed phase. Fluorescence emission wavelength of tris(DPAF-C9) was found to be in a close range to that of PVK that led to its potential uses as the secondary blue hole-transporting material for enhancing the device property toward the modulation of PLED performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecules is the property of MDPI Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHROMOPHORES -- Synthesis KW - SYNTHESIS (Chemistry) KW - PHOTOLUMINESCENCE KW - LIGHT emitting diodes KW - QUENCHING (Chemistry) KW - cis-tris(diphenylaminofluorene) KW - geometrically hindered diphenylaminofluorene KW - light emitting chromophore KW - light-harvesting nanostructure KW - nonplanar stereoisomer N1 - Accession Number: 101771028; Nam-Goo Kang 1; Email Address: papyrus92@gmail.com Ken Kokubo 2; Email Address: kokubo@chem.eng.osaka-u.ac.jp Seaho Jeon 1; Email Address: seaho_jeon@uml.edu Min Wang 1; Email Address: wangmin81@gmail.com Chang-Lyoul Lee 3; Email Address: vsepr@gist.ac.kr Canteenwala, Taizoon 1; Email Address: taizoonc@hotmail.com Loon-Seng Tan 4; Email Address: Loon-Seng.Tan@wpafb.af.mil Chiang, Long Y. 1; Email Address: Long_Chiang@uml.edu; Affiliation: 1: Department of Chemistry, Institute of Nanoscience and Engineering Technology, University of Massachusetts Lowell, Lowell, MA 01854, USA 2: Division of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan 3: Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, Gwangju 500-712, Korea 4: AFRL/RXBN, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: 2015, Vol. 20 Issue 3, p4635; Subject Term: CHROMOPHORES -- Synthesis; Subject Term: SYNTHESIS (Chemistry); Subject Term: PHOTOLUMINESCENCE; Subject Term: LIGHT emitting diodes; Subject Term: QUENCHING (Chemistry); Author-Supplied Keyword: cis-tris(diphenylaminofluorene); Author-Supplied Keyword: geometrically hindered diphenylaminofluorene; Author-Supplied Keyword: light emitting chromophore; Author-Supplied Keyword: light-harvesting nanostructure; Author-Supplied Keyword: nonplanar stereoisomer; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 20p; Illustrations: 3 Diagrams, 3 Charts, 5 Graphs; Document Type: Article L3 - 10.3390/molecules20034635 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101771028&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rabb, David AU - Marron, Joseph T1 - Computational Approaches to Imaging LADAR. JO - Optical Engineering JF - Optical Engineering Y1 - 2015/03// VL - 54 IS - 3 M3 - Article SP - 1 EP - 1 SN - 00913286 AB - An introduction to the journal is presented in which the guest editors discuss computational approaches to imaging LADAR, the technique of feature-specific imaging and multireturn compressed gated range imaging. KW - IMAGING systems KW - OPTICAL engineering N1 - Accession Number: 102116731; Rabb, David 1; Email Address: david.rabb@wpafb.af.mil Marron, Joseph 2; Email Address: joseph.marron@raytheon.com; Affiliation: 1: Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433 2: Raytheon Space and Airborne Systems, El Segundo, California 90245; Source Info: Mar2015, Vol. 54 Issue 3, p1; Subject Term: IMAGING systems; Subject Term: OPTICAL engineering; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102116731&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhemchuzhna, Liubov AU - Gumbs, Godfrey AU - Iurov, Andrii AU - Danhong Huang AU - Bo Gao T1 - Coulomb excitations for a short linear chain of metallic shells. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2015/03// VL - 22 IS - 3 M3 - Article SP - 1 EP - 9 PB - American Institute of Physics SN - 1070664X AB - A self-consistent-field theory is given for the electronic collective modes of a chain containing a finite number, N, of Coulomb-coupled spherical two-dimensional electron gases arranged with their centers along a straight line, for simulating electromagnetic response of a narrow-ribbon of metallic shells. The separation between nearest-neighbor shells is arbitrary and because of the quantization of the electron energy levels due to their confinement to the spherical surface, all angular momenta L of the Coulomb excitations, as well as their projections M on the quantization axis, are coupled. However, for incoming light with a given polarization, only one angular momentum quantum number is usually required. Therefore, the electromagnetic response of the narrow-ribbon of metallic shells is expected to be controlled externally by selecting different polarizations for incident light. We show that, when N?=?3, the next-nearest-neighbor Coulomb coupling is larger than its value if they are located at opposite ends of a right-angle triangle forming the triad. Additionally, the frequencies of the plasma excitations are found to depend on the orientation of the line joining them with respect to the axis of quantization since the magnetic field generated from the induced oscillating electric dipole moment on one sphere can couple to the induced magnetic dipole moment on another. Although the transverse inter-shell electromagnetic coupling can be modeled by an effective dynamic medium, the longitudinal inter-shell Coulomb coupling, on the other hand, can still significantly modify the electromagnetic property of this effective medium between shells. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COULOMB excitation KW - SELF-consistent field theory KW - STRUCTURAL shells KW - MODULES (Algebra) KW - ELECTRON gas KW - QUANTIZATION (Physics) N1 - Accession Number: 101902258; Zhemchuzhna, Liubov 1,2; Email Address: lzhemchuzhna@unm.edu Gumbs, Godfrey 1,3 Iurov, Andrii 2 Danhong Huang 4 Bo Gao 1; Affiliation: 1: Department of Physics and Astronomy, Hunter College, City University of New York, 695 Park Avenue, New York, New York 10065, USA 2: Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87106, USA 3: Donostia International Physics Center (DIPC), P de Manuel Lardizabal, 4, 20018 San Sebastian, Basque Country, Spain 4: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA; Source Info: 2015, Vol. 22 Issue 3, p1; Subject Term: COULOMB excitation; Subject Term: SELF-consistent field theory; Subject Term: STRUCTURAL shells; Subject Term: MODULES (Algebra); Subject Term: ELECTRON gas; Subject Term: QUANTIZATION (Physics); Number of Pages: 9p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.4916063 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101902258&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rogowski, Danielle1,2 T1 - Quis Custodiet Ipsos Custodies? The Current State of Sexual Assault Reform Within the U.S. Military and the Need for the Use of a Formal Decisionmaking Process in Further Reform. JO - Seattle University Law Review JF - Seattle University Law Review J1 - Seattle University Law Review PY - 2015///Spring2015 Y1 - 2015///Spring2015 VL - 38 IS - 3 CP - 3 M3 - Article SP - 1139 EP - 1173 SN - 10781927 AB - The article offers information on the sexual assault reform within the U.S. military and need for using formal decision-making process by the U.S. Congress for future reforms. Topics discussed include prevention of sexual assault in the U.S. armed forces by reforms to military justice system, prioritizing national security concerns in civil litigation on individual interests, and the U.S. Uniform Code of Military Justice. KW - Sexual assault -- Prevention -- Law & legislation KW - Military personnel -- United States -- Crimes against KW - Courts-martial & courts of inquiry -- United States KW - United States -- Armed Forces KW - United States. Uniform Code of Military Justice N1 - Accession Number: 109169069; Authors:Rogowski, Danielle 1,2; Affiliations: 1: Seattle University School of Law; 2: Aircraft Maintenance Officer, United States Air Force; Subject: Sexual assault -- Prevention -- Law & legislation; Subject: Military personnel -- United States -- Crimes against; Subject: United States. Uniform Code of Military Justice; Subject: Courts-martial & courts of inquiry -- United States; Subject: United States -- Armed Forces; Number of Pages: 35p; Court Cases: Feres v. United States; 340 U.S. 135 (1950); Stanley v. CIA; 639 F.2d 1146, 1149 (5th Cir. 1981); Chappell v. Wallace; 462 U.S. 296, 301 (1983); Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=109169069&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR ID - 2015-08787-002 AN - 2015-08787-002 AU - Endsley, Mica R. T1 - Situation awareness misconceptions and misunderstandings. JF - Journal of Cognitive Engineering and Decision Making JO - Journal of Cognitive Engineering and Decision Making JA - J Cogn Eng Decis Mak Y1 - 2015/03// VL - 9 IS - 1 SP - 4 EP - 32 CY - US PB - Sage Publications SN - 1555-3434 AD - Endsley, Mica R., United States Air Force, Pentagon, 4E130, Washington, DC, US, 20330 N1 - Accession Number: 2015-08787-002. Partial author list: First Author & Affiliation: Endsley, Mica R.; United States Air Force, Washington, DC, US. Release Date: 20150316. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Human Factors Engineering; Information Technology; Short Term Memory. Minor Descriptor: Awareness. Classification: Human Factors Engineering (4010). Population: Human (10). Methodology: Literature Review. References Available: Y. Page Count: 29. Issue Publication Date: Mar, 2015. AB - Situation awareness (SA) has become a widely used construct within the human factors community, the focus of considerable research over the past 25 years. This research has been used to drive the development of advanced information displays, the design of automated systems, information fusion algorithms, and new training approaches for improving SA in individuals and teams. In recent years, a number of papers criticized the Endsley model of SA on various grounds. I review those criticisms here and show them to be based on misunderstandings of the model. I also review several new models of SA, including situated SA, distributed SA, and sensemaking, in light of this discussion and show how they compare to existing models of SA in individuals and teams. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - situation awareness KW - sensemaking KW - working memory KW - situation assessment KW - team situation awareness KW - 2015 KW - Human Factors Engineering KW - Information Technology KW - Short Term Memory KW - Awareness KW - 2015 DO - 10.1177/1555343415572631 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-08787-002&site=ehost-live&scope=site UR - mica.r.endsley-jones.civ@mail.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-08787-012 AN - 2015-08787-012 AU - Vidulich, Michael A. AU - Tsang, Pamela S. T1 - The confluence of situation awareness and mental workload for adaptable human–machine systems. JF - Journal of Cognitive Engineering and Decision Making JO - Journal of Cognitive Engineering and Decision Making JA - J Cogn Eng Decis Mak Y1 - 2015/03// VL - 9 IS - 1 SP - 95 EP - 97 CY - US PB - Sage Publications SN - 1555-3434 AD - Vidulich, Michael A., Air Force Research Laboratory, 711 HPW/RHCP, Bldg. 840 Rm. W200, 2510 Fifth Street, WPAFB, OH, US, 45433-7951 N1 - Accession Number: 2015-08787-012. Partial author list: First Author & Affiliation: Vidulich, Michael A.; Air Force Research Laboratory, Human Effectiveness Directorate, Wright-Patterson Air Force Base, OH, US. Release Date: 20150316. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Comment/Reply. Language: English. Major Descriptor: Automation; Human Computer Interaction; Computational Modeling. Minor Descriptor: Awareness; Work Load. Classification: Human Factors Engineering (4010). Population: Human (10). References Available: Y. Page Count: 3. Issue Publication Date: Mar, 2015. Copyright Statement: Human Factors and Ergonomics Society. 2014. AB - Comments on an article by R. Parasuraman et al. (see record [rid]2014-12697-004[/rid]). In this paper, we argue that the use of the SA construct in conjunction with that of mental workload can further help specify the constraints and account for variance in human–system performance, especially that of heavily automated systems. More specifically, we argue that the extent to which the SA and mental workload measures associate or the manner by which they dissociate can provide valuable insights concerning the human–system operational efficacy. Later in the paper, an emerging approach that attempts to use both workload and SA measures to engage adaptive system changes will be described. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - situation awareness KW - automation KW - mental workload KW - computational modeling KW - human-system performance KW - 2015 KW - Automation KW - Human Computer Interaction KW - Computational Modeling KW - Awareness KW - Work Load KW - 2015 DO - 10.1177/1555343414554805 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-08787-012&site=ehost-live&scope=site UR - michael.vidulich@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-08787-014 AN - 2015-08787-014 AU - Endsley, Mica R. T1 - Final reflections: Situation awareness models and measures. JF - Journal of Cognitive Engineering and Decision Making JO - Journal of Cognitive Engineering and Decision Making JA - J Cogn Eng Decis Mak Y1 - 2015/03// VL - 9 IS - 1 SP - 101 EP - 111 CY - US PB - Sage Publications SN - 1555-3434 AD - Endsley, Mica R., United States Air Force, Pentagon, 4E130, Washington, DC, US, 20330 N1 - Accession Number: 2015-08787-014. Partial author list: First Author & Affiliation: Endsley, Mica R.; United States Air Force, Washington, DC, US. Release Date: 20150316. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Awareness; Decision Making. Minor Descriptor: Cognitive Ability. Classification: Cognitive Processes (2340). Population: Human (10). References Available: Y. Page Count: 11. Issue Publication Date: Mar, 2015. AB - A response is provided to the many authors who commented on my initial paper for this special issue on situation awareness (SA) addressing remaining questions and observations on the Endsley 1995 model of SA. A discussion on historical perspectives on cognitive engineering and SA is included, along with future research needs for the construct. New models on sensemaking, distributed SA, and situated SA are also discussed, with remaining comments on their differences with the Endsley 1995 model of SA. Finally, a short discussion of SA measurement approaches is provided, addressing key issues raised in the commentaries. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - situation awareness KW - metrics KW - models KW - team situation awareness KW - 2015 KW - Awareness KW - Decision Making KW - Cognitive Ability KW - 2015 DO - 10.1177/1555343415573911 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-08787-014&site=ehost-live&scope=site UR - mica.r.endsley-jones.civ@mail.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-12335-012 AN - 2015-12335-012 AU - Gunzelmann, Glenn AU - Veksler, Bella Z. AU - Walsh, Matthew M. AU - Gluck, Kevin A. T1 - Understanding and predicting the cognitive effects of sleep loss through simulation. T3 - The Science of Sleep JF - Translational Issues in Psychological Science JO - Translational Issues in Psychological Science JA - Trans Issues Psychol Sci Y1 - 2015/03// VL - 1 IS - 1 SP - 106 EP - 115 CY - US PB - Educational Publishing Foundation SN - 2332-2136 SN - 2332-2179 SN - 1-4338-2059-5 SN - 978-1-4338-2059-5 AD - Gunzelmann, Glenn, Cognitive Models and Agents Branch, Air Force Research Laboratory, 2620 Q Street – Building 852, Wright Patterson AFB, OH, US, 45433 N1 - Accession Number: 2015-12335-012. Partial author list: First Author & Affiliation: Gunzelmann, Glenn; Cognitive Models and Agents Branch, Air Force Research Laboratory, Wright Patterson AFB, OH, US. Release Date: 20150323. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. ISBN: 1-4338-2059-5; 978-1-4338-2059-5. Language: English. Major Descriptor: Cognitive Processes; Fatigue; Mathematical Modeling; Simulation; Sleep Deprivation. Minor Descriptor: Computational Modeling. Classification: Physical & Somatoform & Psychogenic Disorders (3290). Population: Human (10). Tests & Measures: Two-Alternative Forced Choice Task; Simple Reaction Time Task. Supplemental Data: Tables and Figures Internet. References Available: Y. Page Count: 10. Issue Publication Date: Mar, 2015. Publication History: Accepted Date: Oct 16, 2014; Revised Date: Oct 14, 2014; First Submitted Date: Mar 30, 2014. AB - Sleep loss impacts cognitive functioning, and the resulting performance changes can have dramatic consequences in the real world. The increased risk to property and human life has motivated decades of empirical research on fatigue and its effects on performance. Models now exist that can predict the general time course and magnitude of changes in cognitive function caused by fatigue. These models have enabled the development of tools that are useful for shift work and sleep scheduling to improve safety. However, these models are incapable of making a priori predictions regarding the precise, task-specific effects that sleep loss and circadian rhythms will have on performance. Such a capability would make it possible to perform simulation-based risk assessments by conducting systematic evaluations over spaces of system designs, training approaches, policy interventions, and sleep/work schedules. It would also support monitoring technologies to detect behavioral evidence of fatigue. To develop such applications, computational process models that run in simulation are needed to produce behavior predictions in the domains of interest. In this article we review and summarize research committed to precisely this goal, we assess progress to date, and we describe remaining challenges on the path to application. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - fatigue KW - simulation KW - sleep KW - cognitive architecture KW - computational model KW - 2015 KW - Cognitive Processes KW - Fatigue KW - Mathematical Modeling KW - Simulation KW - Sleep Deprivation KW - Computational Modeling KW - 2015 U1 - Sponsor: Air Force Office of Scientific Research (AFOSR), US. Grant: 07HE01COR; 10RH04COR. Recipients: No recipient indicated DO - 10.1037/tps0000017 L3 - 10.1037/tps0000017.supp (Supplemental) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-12335-012&site=ehost-live&scope=site UR - glenn.gunzelmann@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Blackshire, James L. AU - Pilchak, Adam T1 - Computational NDE as an Integrated Component of ICME. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2015/02/28/ VL - 1650 IS - 1 M3 - Article SP - 75 EP - 82 PB - American Institute of Physics SN - 0094243X AB - A current area of intense research involves the development and use of integrated computational materials engineering (ICME) approaches, which promise to develop next-generation material systems with significant cost and time savings. At its core, ICME synergistically combines material-centric models related to materials development, processing, manufacturing, and property/performance assessment, where key material property information is shared between the various models to enhance process and product outcomes. The integration of computational NDE models within the ICME framework represents an additional opportunity to advance material science and engineering processes through the development of advanced material state awareness (MSA) sensing methods. In particular, nondestructive sensing methods are needed for ICME model and process validation at all stages of the material development process. Several examples of this are presented, which show model-driven sensing for in-process monitoring, microstructure quality assurance, and damage state sensing in a dynamic loading environment. The results illustrate opportunities, challenges, and key linking opportunities for NDE and MSA within the ICME framework. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - PERFORMANCE evaluation KW - MATERIALS -- Dynamic testing KW - QUALITY assurance KW - MICROSTRUCTURE KW - MATERIALS science N1 - Accession Number: 101902452; Blackshire, James L. 1; Email Address: James.Blackshire@wpafb.af.mil Pilchak, Adam 1; Email Address: Adam.Pilchak@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RXCA), Wright-Patterson AFB, OH 45433; Source Info: 2015, Vol. 1650 Issue 1, p75; Subject Term: NONDESTRUCTIVE testing; Subject Term: PERFORMANCE evaluation; Subject Term: MATERIALS -- Dynamic testing; Subject Term: QUALITY assurance; Subject Term: MICROSTRUCTURE; Subject Term: MATERIALS science; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Illustrations: 2 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.4914596 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101902452&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patsora, Iryna AU - Hillmann, Susanne AU - Heuer, Henning AU - Foos, Bryan C. AU - Calzada, Juan G. T1 - High-Frequency Eddy Current Based Impedance Spectroscopy for Characterization of the Percolation Process of Wet Conductive Coatings. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2015/02/28/ VL - 1650 IS - 1 M3 - Article SP - 414 EP - 423 PB - American Institute of Physics SN - 0094243X AB - Coatings based on wet particles containing pastes are currently used in many industries, such as automotive, aircraft and/or wind-power plants, to protect carbon-fiber reinforced plastic against damages caused by electrical effects, such as a lightning strike. In order to understand and control the percolation behavior during the drying, a non-contact Eddy Current based Impedance Spectroscopy can be used. This technique can be applied in the wet state of the coating and it works non-destructively. Percolation behaviors of the wet conductive coatings are strongly affected by the type of particles used as a filling and the thickness of the coating. Experimental results of Eddy Current measurements on wet conductive coatings based on different conductive particles and deposited with different thicknesses are discussed. Based on High-Frequency Eddy Current measurements, a prognosis of the coating parameters after final curing during the wet state becomes conceivable. This, for example, offers a wide opportunity for process control and repairs. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRCRAFT industry KW - EDDY currents (Electric) KW - IMPEDANCE spectroscopy KW - SURFACE coatings KW - ELECTRIC conductivity KW - REINFORCED plastics N1 - Accession Number: 101902493; Patsora, Iryna 1; Email Address: patsyora@avt.et.tu-dresden.de Hillmann, Susanne 2 Heuer, Henning 2 Foos, Bryan C. 3 Calzada, Juan G. 3; Affiliation: 1: Technische Universität Dresden, Fakultät Elektrotechnik und Informationstechnik, Institut für Aufbau- und Verbindungstechnik, Dresden, Germany 2: Fraunhofer Institute for Ceramic Technologies and Systems, Branch for Material Diagnosis (IKTS-MD), Dresden, Germany 3: Air Force Research Laboratory, Dayton, Ohio; Source Info: 2015, Vol. 1650 Issue 1, p414; Subject Term: AIRCRAFT industry; Subject Term: EDDY currents (Electric); Subject Term: IMPEDANCE spectroscopy; Subject Term: SURFACE coatings; Subject Term: ELECTRIC conductivity; Subject Term: REINFORCED plastics; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 441228 Motorcycle, ATV, and All Other Motor Vehicle Dealers; NAICS/Industry Codes: 441220 Motorcycle, boat and other motor vehicle dealers; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 10p; Illustrations: 2 Diagrams, 3 Charts, 11 Graphs; Document Type: Article L3 - 10.1063/1.4914637 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101902493&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shell, Eric B. AU - Aldrin, John C. AU - Sabbagh, Harold A. AU - Sabbagh, Elias AU - Murphy, R. Kim AU - Mazdiyasni, Siamack AU - Lindgren, Eric A. T1 - Demonstration of Model-Based Inversion of Electromagnetic Signals for Crack Characterization. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2015/02/28/ VL - 1650 IS - 1 M3 - Article SP - 484 EP - 493 PB - American Institute of Physics SN - 0094243X AB - The objective of this work is to demonstrate model-based inversion techniques to characterize the length, depth, width, and orientation of surface-breaking cracks using eddy current (EC) NDE. The paper presents experimental testing to acquire high fidelity automated eddy current data, enhancements made in VIC-3D® to improve both speed and accuracy, benchmark studies demonstrating model accuracy, improved data registration and reduction methods, and surrogate models and model calibration schemes to ensure the fastest and highest quality models are used for inversion. Initial inversion results indicate the potential to accurately size cracks and EDM notches over a wide range of flaw characteristics and probe orientations. Insight into EC variability for POD crack sets is presented using inversion results for crack length and depth. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - SURFACE cracks KW - PROBES (Electronic instruments) KW - AUTOMATION KW - CALIBRATION KW - BENCHMARK testing (Engineering) N1 - Accession Number: 101902501; Shell, Eric B. 1; Email Address: eric.shell@wyle.com Aldrin, John C. 2; Email Address: aldrin@computationaltools.com Sabbagh, Harold A. 3; Email Address: has@sabbagh.com Sabbagh, Elias 3; Email Address: ehs@sabbagh.com Murphy, R. Kim 3; Email Address: rkmurphy@att.net Mazdiyasni, Siamack 4; Email Address: siamack.mazdiyasni@us.af.mil Lindgren, Eric A. 4; Email Address: eric.lindgren@us.af.mil; Affiliation: 1: Wyle, 2700 Indian Ripple Road, Dayton, OH 45440 2: Computational Tools, 4275 Chatham Avenue, Gurnee, IL 60031 3: Victor Technologies LLC, Bloomington, IN 47401 4: Air Force Research Laboratory (AFRL/RXCA), Wright-Patterson AFB, OH 45433; Source Info: 2015, Vol. 1650 Issue 1, p484; Subject Term: EDDY currents (Electric); Subject Term: SURFACE cracks; Subject Term: PROBES (Electronic instruments); Subject Term: AUTOMATION; Subject Term: CALIBRATION; Subject Term: BENCHMARK testing (Engineering); Number of Pages: 10p; Illustrations: 1 Diagram, 1 Chart, 10 Graphs; Document Type: Article L3 - 10.1063/1.4914645 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101902501&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Biedermann, Eric AU - Jauriqui, Leanne AU - Aldrin, John C. AU - Goodlet, Brent AU - Pollock, Tresa AU - Torbet, Chris AU - Mazdiyasni, Siamack T1 - Resonance Ultrasound Spectroscopy Forward Modeling and Inverse Characterization of Nickel-based Superalloys. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2015/02/28/ VL - 1650 IS - 1 M3 - Article SP - 835 EP - 844 PB - American Institute of Physics SN - 0094243X AB - The objective of this paper is to investigate Resonance Ultrasound Spectroscopy (RUS) measurement models to more precisely connect changes in the resonance frequencies of nickel-based super-alloy material to the macro/microscopic state. RUS models using analytical solutions and the finite element method (FEM) were developed to address varying elastic properties, grain structures and creep. Experimental studies were performed investigating the effect of exposure to high temperatures and stress for varying part shape and three grain structure classes: single crystals, directionally-solidified and polycrystalline structures. Inversion using both traditional analytical models was enhanced in order to simultaneously estimate varying material properties and changes in part geometry due to creep. Inversion using surrogate models from FEM simulations was also developed, addressing varying crystal orientation and complex geometries. Results are presented comparing the forward model trends and inversion results with nickel alloy parts under various test conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESONANCE KW - ULTRASONIC imaging KW - SPECTROMETRY KW - NICKEL KW - HEAT resistant alloys KW - ELASTICITY KW - CRYSTAL orientation KW - FINITE element method N1 - Accession Number: 101902543; Biedermann, Eric 1; Email Address: ebiedermann@vibrantndt.com Jauriqui, Leanne 1; Email Address: ljauriqui@vibrantndt.com Aldrin, John C. 2; Email Address: aldrin@computationaltools.com Goodlet, Brent 3; Email Address: bgoodlet@engineering.ucsb.edu Pollock, Tresa 3; Email Address: pollock@engineering.ucsb.edu Torbet, Chris 3; Email Address: ctorbet@engineering.ucsb.edu Mazdiyasni, Siamack 4; Email Address: siamack.mazdiyasni@us.af.mil; Affiliation: 1: Vibrant Corporation, Albuquerque, NM 87113, USA 2: Computational Tools, Gurnee, IL 60031, USA 3: University of California, Santa Barbara, Santa Barbara, CA 93106, USA 4: Air Force Research Laboratory (AFRL/RXCA), Wright-Patterson AFB, OH 45433, USA; Source Info: 2015, Vol. 1650 Issue 1, p835; Subject Term: RESONANCE; Subject Term: ULTRASONIC imaging; Subject Term: SPECTROMETRY; Subject Term: NICKEL; Subject Term: HEAT resistant alloys; Subject Term: ELASTICITY; Subject Term: CRYSTAL orientation; Subject Term: FINITE element method; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 10p; Illustrations: 2 Color Photographs, 3 Diagrams, 7 Graphs; Document Type: Article L3 - 10.1063/1.4914687 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101902543&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Annis, Charles AU - Sabbagh, Harold A. AU - Shell, Eric B. AU - Knopp, Jeremy AU - Lindgren, Eric A. T1 - Case Study on NDE Characterization Metrics for Optimization, Validation and Quality Control. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2015/02/28/ VL - 1650 IS - 1 M3 - Article SP - 845 EP - 855 PB - American Institute of Physics SN - 0094243X AB - This paper introduces different data analysis strategies and characterization metrics for (1) designing and optimizing NDE characterization techniques, (2) validating NDE characterization performance and (3) ensuring in-service quality control. Rather than discard data that lack perfect knowledge of the flaw state, it is proposed to use it appropriately in order to optimize the inversion process. For example, such cracks of uncertain depth can be repeatedly scanned at different orientations and with different probe, and the inversion process can be designed to minimize the variance in the depth estimates under the varying conditions. To address validation of NDE characterization capability, the use of a finite number of real cracks that are destructively characterized in conjunction with a broader notch specimen set and simulated data is proposed. Lastly, inversion metrics are reviewed when no prior knowledge of the crack state is available. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - QUALITY control KW - MATHEMATICAL optimization KW - DATA analysis KW - SURFACE cracks KW - SIMULATION methods & models N1 - Accession Number: 101902544; Aldrin, John C. 1; Email Address: aldrin@computationaltools.com Annis, Charles 2; Email Address: has@sabbagh.com Sabbagh, Harold A. 3; Email Address: charles.annis@statisticalengineering.com Shell, Eric B. 4; Email Address: eric.shell@wyle.com Knopp, Jeremy 5; Email Address: jeremy.knopp@us.af.mil Lindgren, Eric A. 5; Email Address: eric.lindgren@us.af.mil; Affiliation: 1: Computational Tools, 4275 Chatham Avenue, Gurnee, IL 60031 2: Statistical Engineering, Palm Beach Garden, FL 33418 3: Victor Technologies LLC, Bloomington, IN 47401 4: Wyle, 2700 Indian Ripple Road, Dayton, OH 45440 5: Air Force Research Laboratory (AFRL/RXCA), Wright-Patterson AFB, OH 45433; Source Info: 2015, Vol. 1650 Issue 1, p845; Subject Term: NONDESTRUCTIVE testing; Subject Term: QUALITY control; Subject Term: MATHEMATICAL optimization; Subject Term: DATA analysis; Subject Term: SURFACE cracks; Subject Term: SIMULATION methods & models; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 11p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1063/1.4914688 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101902544&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Forsyth, David S. AU - Welter, John T. T1 - Progress on Automated Data Analysis Algorithms for Ultrasonic Inspection of Composites. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2015/02/28/ VL - 1650 IS - 1 M3 - Article SP - 1091 EP - 1101 PB - American Institute of Physics SN - 0094243X AB - Progress is presented on the development and demonstration of automated data analysis (ADA) software to address the burden in interpreting ultrasonic inspection data for large composite structures. The automated data analysis algorithm is presented in detail, which follows standard procedures for analyzing signals for time-of-flight indications and backwall amplitude dropout. New algorithms have been implemented to reliably identify indications in time-of-flight images near the front and back walls of composite panels. Adaptive call criteria have also been applied to address sensitivity to variation in backwall signal level, panel thickness variation, and internal signal noise. ADA processing results are presented for a variety of test specimens that include inserted materials and discontinuities produced under poor manufacturing conditions. Software tools have been developed to support both ADA algorithm design and certification, producing a statistical evaluation of indication results and false calls using a matching process with predefined truth tables. Parametric studies were performed to evaluate detection and false call results with respect to varying algorithm settings. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRASONIC waves KW - TIME-of-flight mass spectroscopy KW - THICKNESS measurement KW - SIGNAL-to-noise ratio KW - AUTOSATE N1 - Accession Number: 101902574; Aldrin, John C. 1; Email Address: aldrin@computationaltools.com Forsyth, David S. 2; Email Address: dforsyth@tri-austin.com Welter, John T. 3; Email Address: john.welter.2@us.af.mil; Affiliation: 1: Computational Tools, Gurnee, IL 60031 2: TRI/Austin, Austin, TX 78746 3: Air Force Research Laboratory (AFRL/RXCA), Wright-Patterson AFB, OH 45433; Source Info: 2015, Vol. 1650 Issue 1, p1091; Subject Term: ULTRASONIC waves; Subject Term: TIME-of-flight mass spectroscopy; Subject Term: THICKNESS measurement; Subject Term: SIGNAL-to-noise ratio; Subject Term: AUTOSATE; Number of Pages: 11p; Illustrations: 2 Color Photographs, 2 Diagrams, 3 Charts, 1 Graph; Document Type: Article L3 - 10.1063/1.4914718 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101902574&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sabbagh, Elias H. AU - Sabbagh, Harold A. AU - Murphy, R. Kim AU - Aldrin, John C. AU - Annis, Charles AU - Knopp, Jeremy S. T1 - STOCHASTIC INVERSE PROBLEMS: MODELS AND METRICS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2015/02/28/ VL - 1650 IS - 1 M3 - Article SP - 1865 EP - 1872 PB - American Institute of Physics SN - 0094243X AB - In past work, we introduced model-based inverse methods, and applied them to problems in which the anomaly could be reasonably modeled by simple canonical shapes, such as rectangular solids. In these cases the parameters to be inverted would be length, width and height, as well as the occasional probe lift-off or rotation. We are now developing a formulation that allows more flexibility in modeling complex flaws. The idea consists of expanding the flaw in a sequence of basis functions, and then solving for the expansion coefficients of this sequence, which are modeled as independent random variables, uniformly distributed over their range of values. There are a number of applications of such modeling: 1. Connected cracks and multiple half-moons, which we have noted in a POD set. Ideally we would like to distinguish connected cracks from one long shallow crack. 2. Cracks of irregular profile and shape which have appeared in cold work holes during bolt-hole eddy-current inspection. One side of such cracks is much deeper than other. 3. L or C shaped crack profiles at the surface, examples of which have been seen in bolt-hole cracks. By formulating problems in a stochastic sense, we are able to leverage the stochastic global optimization algorithms in NLSE, which is resident in VIC-3D®, to answer questions of global minimization and to compute confidence bounds using the sensitivity coefficient that we get from NLSE. We will also address the issue of surrogate functions which are used during the inversion process, and how they contribute to the quality of the estimation of the bounds. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STOCHASTIC processes KW - INVERSE problems (Differential equations) KW - EDDY current testing KW - SURFACE cracks KW - PARAMETERS (Statistics) KW - ROTATIONAL motion KW - RANDOM variables N1 - Accession Number: 101902668; Sabbagh, Elias H. 1 Sabbagh, Harold A. 1 Murphy, R. Kim 1 Aldrin, John C. 2 Annis, Charles 3 Knopp, Jeremy S. 4; Affiliation: 1: Victor Technologies, LLC, Bloomington, IN 47407-7706 USA 2: Computational Tools Gurnee, IL 60031 USA 3: Statistical Engineering, Palm Beach Gardens, FL 33418 USA 4: Air Force Research Laboratory (AFRL/RXCA), Wright Patterson AFB OH 45433-7817 USA; Source Info: 2015, Vol. 1650 Issue 1, p1865; Subject Term: STOCHASTIC processes; Subject Term: INVERSE problems (Differential equations); Subject Term: EDDY current testing; Subject Term: SURFACE cracks; Subject Term: PARAMETERS (Statistics); Subject Term: ROTATIONAL motion; Subject Term: RANDOM variables; Number of Pages: 8p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.4914812 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101902668&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Sabbagh, Harold A. AU - Annis, Charles AU - Shell, Eric B. AU - Knopp, Jeremy AU - Lindgren, Eric A. T1 - Assessing Inversion Performance and Uncertainty in Eddy Current Crack Characterization Applications. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2015/02/28/ VL - 1650 IS - 1 M3 - Article SP - 1873 EP - 1883 PB - American Institute of Physics SN - 0094243X AB - When performing inverse-methods for the characterization of cracks, there is a need to assess the quality of the result without prior knowledge of the flaw state. This paper investigates the use of two estimation metrics, confidence intervals on parameter estimates and the frequency that the global solution was achieved, for assessing inversion performance. A case study on eddy current inversion of surface-breaking cracks was used to evaluate the viability of these metrics. While these metrics were found to have benefit, the parameter confidence intervals were found to not be conservative. As well, when there are problems with convergence to the global minima, residual error plots and mean square error maps were found to provide more information on model quality and the true bounds on the parameter estimates. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - INVERSIONS (Geometry) KW - SURFACE cracks KW - PARAMETER estimation KW - CONFIDENCE intervals KW - MEAN square algorithms KW - STOCHASTIC processes N1 - Accession Number: 101902669; Aldrin, John C. 1; Email Address: aldrin@computationaltools.com Sabbagh, Harold A. 2; Email Address: has@sabbagh.com Annis, Charles 3; Email Address: charles.annis@statisticalengineering.com Shell, Eric B. 4; Email Address: eric.shell@wyle.com Knopp, Jeremy 5; Email Address: jeremy.knopp@us.af.mil Lindgren, Eric A. 5; Email Address: eric.lindgren@us.af.mil; Affiliation: 1: Computational Tools, 4275 Chatham Avenue, Gurnee, IL 60031 2: Victor Technologies LLC, Bloomington, IN 47401 3: Statistical Engineering, Palm Beach Garden, FL 33418 4: Wyle, 2700 Indian Ripple Road, Dayton, OH 45440 5: Air Force Research Laboratory (AFRL/RXCA), Wright-Patterson AFB, OH 45433; Source Info: 2015, Vol. 1650 Issue 1, p1873; Subject Term: EDDY currents (Electric); Subject Term: INVERSIONS (Geometry); Subject Term: SURFACE cracks; Subject Term: PARAMETER estimation; Subject Term: CONFIDENCE intervals; Subject Term: MEAN square algorithms; Subject Term: STOCHASTIC processes; Number of Pages: 11p; Illustrations: 1 Diagram, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.4914813 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101902669&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Criner, A. K. AU - Cherry, A. J. AU - Cooney, A. T. AU - Katter, T. D. AU - Banks, H. T. AU - Shuhua Hu AU - Catenacci, Jared T1 - Identification of Thermal Degradation Using Probabilistic Models in Reflectance Spectroscopy. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2015/02/28/ VL - 1650 IS - 1 M3 - Article SP - 1898 EP - 1906 PB - American Institute of Physics SN - 0094243X AB - Different probabilistic models of molecular vibration modes are considered to model the reflectance spectra of chemical species through the dielectric constant. We discuss probability measure estimators in parametric and nonparametric models. Analyses of ceramic matrix composite samples that have been heat treated for different amounts of times are compared. We finally compare these results with the analysis of vitreous silica using nonparametric models. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REFLECTANCE spectroscopy KW - DECOMPOSITION (Chemistry) KW - MOLECULAR vibration KW - CHEMICAL species KW - PROBABILISTIC number theory KW - PERMITTIVITY KW - HEAT treatment N1 - Accession Number: 101902672; Criner, A. K. 1 Cherry, A. J. 2 Cooney, A. T. 3 Katter, T. D. 4 Banks, H. T. 5 Shuhua Hu 5 Catenacci, Jared 5; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469, USA 2: Southwestern Ohio Council for Higher Education, Dayton, OH 45420, USA 3: Materials State Awareness & Supportability Branch, Air Force Research Laboratory, WPAFB 45433, USA 4: Universal Technologies Corporation, Dayton, OH 45432, USA 5: North Carolina State University, Box 8212, Raleigh, NC 27695; Source Info: 2015, Vol. 1650 Issue 1, p1898; Subject Term: REFLECTANCE spectroscopy; Subject Term: DECOMPOSITION (Chemistry); Subject Term: MOLECULAR vibration; Subject Term: CHEMICAL species; Subject Term: PROBABILISTIC number theory; Subject Term: PERMITTIVITY; Subject Term: HEAT treatment; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 9p; Illustrations: 2 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.4914816 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101902672&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Emery, S. B. AU - Xin, Y. AU - Ridge, C. J. AU - Buszek, R. J. AU - Boatz, J. A. AU - Boyle, J. M. AU - Little, B. K. AU - Lindsay, C. M. T1 - Unusual behavior in magnesium-copper cluster matter produced by helium droplet mediated deposition. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2015/02/28/ VL - 142 IS - 8 M3 - Article SP - 1 EP - 7 PB - American Institute of Physics SN - 00219606 AB - We demonstrate the ability to produce core-shell nanoclusters of materials that typically undergo intermetallic reactions using helium droplet mediated deposition. Composite structures of magnesium and copper were produced by sequential condensation of metal vapors inside the 0.4 K helium droplet baths and then gently deposited onto a substrate for analysis. Upon deposition, the individual clusters, with diameters ~5 nm, form a cluster material which was subsequently characterized using scanning and transmission electron microscopies. Results of this analysis reveal the following about the deposited cluster material: it is in the un-alloyed chemical state, it maintains a stable core-shell 5 nm structure at sub-monolayer quantities, and it aggregates into unreacted structures of ~75 nm during further deposition. Surprisingly, high angle annular dark field scanning transmission electron microscopy images revealed that the copper appears to displace the magnesium at the core of the composite cluster despite magnesium being the initially condensed species within the droplet. This phenomenon was studied further using preliminary density functional theory which revealed that copper atoms, when added sequentially to magnesium clusters, penetrate into the magnesium cores. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNESIUM alloys KW - TRANSMISSION electron microscopes KW - COMPOSITE materials KW - INTERMETALLIC compounds KW - MICROCLUSTERS KW - HELIUM N1 - Accession Number: 101308575; Emery, S. B. 1,2,3; Email Address: samuel.emery@navy.mil Xin, Y. 4 Ridge, C. J. 2 Buszek, R. J. 5 Boatz, J. A. 5 Boyle, J. M. 3,6 Little, B. K. 1,2 Lindsay, C. M. 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469, USA 2: Air Force Research Laboratory, Munitions Directorate, 2306 Perimeter Rd., Eglin AFB, Florida 32542, USA 3: Naval Surface Warfare Center Indian Head Explosive Ordnance Technology Division, Indian Head, Maryland 20640, USA 4: National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA 5: ERC Inc., Edwards AFB, California 93524, USA 6: Dublin School, 18 LehmannWay, Dublin, New Hampshire 03444, USA; Source Info: 2015, Vol. 142 Issue 8, p1; Subject Term: MAGNESIUM alloys; Subject Term: TRANSMISSION electron microscopes; Subject Term: COMPOSITE materials; Subject Term: INTERMETALLIC compounds; Subject Term: MICROCLUSTERS; Subject Term: HELIUM; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 7p; Illustrations: 1 Color Photograph, 1 Black and White Photograph, 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1063/1.4913210 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101308575&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ware, Taylor H. AU - McConney, Michael E. AU - Jeong Jae Wie AU - Tondiglia, Vincent P. AU - White, Timothy J. T1 - Voxelated liquid crystal elastomers. JO - Science JF - Science Y1 - 2015/02/27/ VL - 347 IS - 6225 M3 - Article SP - 982 EP - 984 SN - 00368075 AB - The article focuses on research into voxelated liquid crystal elastomers, which are soft materials capable of programmable shape change which can provide devices with multifunctionality. It states that the molecular order direction (MOD) is written into voxels and mentions that MOD controls the material's inherent mechanical response. It talks about how chemical or thermal stimuli can change flat sheets into three-dimensional objects through controlled stretching and bending. KW - Elastomers KW - Voxel-based morphology KW - Liquid crystals KW - Stretching of materials KW - Flexure KW - Molecular shapes N1 - Accession Number: 101194320; Ware, Taylor H. 1,2; McConney, Michael E. 1; Jeong Jae Wie 1,2; Tondiglia, Vincent P. 1,3; White, Timothy J. 1; Email Address: timothy.white.24@us.af.mil; Affiliations: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH, USA; 2: Azimuth Corporation, Dayton, OH, USA; 3: Leidos, Dayton, OH, USA; Issue Info: 2/27/2015, Vol. 347 Issue 6225, p982; Thesaurus Term: Elastomers; Subject Term: Voxel-based morphology; Subject Term: Liquid crystals; Subject Term: Stretching of materials; Subject Term: Flexure; Subject Term: Molecular shapes; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325212 Synthetic Rubber Manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1126/science.1261019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=101194320&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - PhilipR. Buskohl AU - Ryan C. Kramb AU - Richard A. Vaia T1 - Synchronicity in CompositeHydrogels: Belousov–Zhabotinsky(BZ) Active Nodes in Gelatin. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2015/02/26/ VL - 119 IS - 8 M3 - Article SP - 3595 EP - 3602 SN - 15206106 AB - Synchronization ofmotion, task, or communication is responsiblefor the successful function of many living systems. Composite Belousov–Zhabotinsky(BZ) self-oscillating hydrogels exhibit a sufficiently complex chemical-mechanicalfeedback to develop synchrony and other dynamical behaviors. In thecontext of BZ gels, synchrony is the sustained, oscillating oxidationwith constant phase of two or more catalyst-immobilized gel segments.However, design criteria to control chemical-mechanical synchronizationthrough patterning of the reaction catalyst are lacking. To characterizethe fundamental units of composite device design, the periodic oxidationbehavior of isolated nodes, node pairs, and multinode systems wereinvestigated. Isolated nodes of Ru-immobilized gelatin exhibited threedistinct, volume-dependent, regimes of oscillation: (i) long period(10–40 min), (ii) biperiod (mix of long and short), and (iii)short period (2.5 min). Node pairs and multinode grids of Ru gelatinwere embedded in plain gelatin through a film stacking or 3D printingtechnique. The fraction of synchronized node pairs decreased withincreasing interspace distance. Embedment increased the probabilityof synchronization, with 100% synchronization for interspace distancesof less than 10 times the characteristic length of the reaction–diffusionprocess. The phase difference between synchronized node pairs transitionedfrom in-phase at small interspace distances to antiphase at largedistances, providing the first experimental verification of antiphasesynchrony in composite BZ gels. From these design criteria and fabricationtechniques, the chemical-mechanical feedback of BZ composites canbe programmed through strategic patterning of the catalyst to buildBZ devices for sensor, trigger, or chemical computing applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPOSITE materials KW - HYDROGELS KW - BELOUSOV-Zhabotinskii reaction KW - GELATIN KW - APPLICATION software N1 - Accession Number: 101209573; PhilipR. Buskohl 1 Ryan C. Kramb 1 Richard A. Vaia 1; Affiliation: 1: †AFRL/RXMaterials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States; Source Info: Feb2015, Vol. 119 Issue 8, p3595; Subject Term: COMPOSITE materials; Subject Term: HYDROGELS; Subject Term: BELOUSOV-Zhabotinskii reaction; Subject Term: GELATIN; Subject Term: APPLICATION software; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 541511 Custom Computer Programming Services; NAICS/Industry Codes: 511210 Software Publishers; NAICS/Industry Codes: 311999 All Other Miscellaneous Food Manufacturing; NAICS/Industry Codes: 311990 All other food manufacturing; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101209573&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - JeongJae Wie AU - Kyung Min Lee AU - Taylor H. Ware AU - Timothy J. White T1 - Twists and Turns in Glassy, Liquid Crystalline PolymerNetworks. JO - Macromolecules JF - Macromolecules Y1 - 2015/02/24/ VL - 48 IS - 4 M3 - Article SP - 1087 EP - 1092 SN - 00249297 AB - Three-dimensional shape control isan enabler of dexterous motionin nature. Herein, we report on the thermally initiated out-of-plane(torsional) responses observed in a series of glassy, liquid crystallinepolymer networks prepared with a range of cross-link densities. Thethree-dimensional shape of these materials is strongly dictated byboth cross-link density as well as the preparation conditions (polymerizationtemperature). All of the materials examined herein undergo torsionalinversion of the handedness with increasing temperature. The temperatureat which the material flattens (crossover between handedness inversion)can be positioned by the polymerization temperature. Monoliths preparedwith either multimaterial composition or multidirector orientationsare shown to exhibit spatial variation in shape adaptivity. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC glasses KW - POLYMER liquid crystals KW - CROSSLINKING (Polymerization) KW - SPATIAL variation KW - MONOLITHIC reactors KW - HANDEDNESS KW - TORSIONAL constant N1 - Accession Number: 101146747; JeongJae Wie 1 Kyung Min Lee 1 Taylor H. Ware 1 Timothy J. White 1; Affiliation: 1: Air Force Research Laboratory, Materialsand Manufacturing Directorate, Wright-PattersonAir Force Base, Ohio 45433-7750, United States; Source Info: Feb2015, Vol. 48 Issue 4, p1087; Subject Term: METALLIC glasses; Subject Term: POLYMER liquid crystals; Subject Term: CROSSLINKING (Polymerization); Subject Term: SPATIAL variation; Subject Term: MONOLITHIC reactors; Subject Term: HANDEDNESS; Subject Term: TORSIONAL constant; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101146747&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sinha, V. AU - Gengler, J. J. AU - Muratore, C. AU - Spowart, J. E. T1 - Effects of disorder state and interfacial layer on thermal transport in copper/diamond system. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2015/02/21/ VL - 117 IS - 7 M3 - Article SP - 074305-1 EP - 074305-8 PB - American Institute of Physics SN - 00218979 AB - The characterization of Cu/diamond interface thermal conductance (hc) along with an improved understanding of factors affecting it are becoming increasingly important, as Cu-diamond composites are being considered for electronic packaging applications. In this study, ∼90 nm thick Cu layers were deposited on synthetic and natural single crystal diamond substrates. In several specimens, a Ti-interface layer of thickness ⩽3.5 nm was sputtered between the diamond substrate and the Cu top layer. The hc across Cu/diamond interfaces for specimens with and without a Tiinterface layer was determined using time-domain thermoreflectance. The hc is ∼2× higher for similar interfacial layers on synthetic versus natural diamond substrate. The nitrogen concentration of synthetic diamond substrate is four orders of magnitude lower than natural diamond. The difference in nitrogen concentration can lead to variations in disorder state, with a higher nitrogen content resulting in a higher level of disorder. This difference in disorder state potentially can explain the variations in hc. Furthermore, hc was observed to increase with an increase of Ti-interface layer thickness. This was attributed to an increased adhesion of Cu top layer with increasing Ti-interface layer thickness, as observed qualitatively in the current study. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADMITTANCE (Electricity) KW - ELECTRONIC packaging KW - SINGLE crystals KW - NITROGEN KW - SUBSTRATES (Biochemistry) N1 - Accession Number: 101135874; Sinha, V. 1,2; Email Address: vikas.sinha.1.ctr@us.af.mil Gengler, J. J. 1,3 Muratore, C. 1,4 Spowart, J. E. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: UES, Inc., 4401 Dayton-Xenia Road, Dayton, Ohio 45432, USA 3: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, Ohio 45431, USA 4: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469, USA; Source Info: 2015, Vol. 117 Issue 7, p074305-1; Subject Term: ADMITTANCE (Electricity); Subject Term: ELECTRONIC packaging; Subject Term: SINGLE crystals; Subject Term: NITROGEN; Subject Term: SUBSTRATES (Biochemistry); NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 8p; Illustrations: 1 Black and White Photograph, 2 Diagrams, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.4906958 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101135874&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hause, Michael L. AU - Prince, Benjamin D. AU - Bemish, Raymond J. T1 - A guided-ion beam study of the collisions and reactions of I+ and I+2 with I2. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2015/02/21/ VL - 142 IS - 7 M3 - Article SP - 1 EP - 11 PB - American Institute of Physics SN - 00219606 AB - Growing interest in developing and testing iodine Hall effect thrusters requires measurements of the cross sections of reactions that generate low energy plasma following discharge. Limited experimental and theoretical work necessitates a decisive experiment to elucidate the charge exchange and collision-induced dissociation channels. To this end, we have used guided-ion beam techniques to measure cross sections for both I+ + I2 and I+ + I2 collisions. We present total collision cross sections as well as collision-induced dissociation cross sections for center-of-mass collision energies ranging from 0.5 to 200 eV for molecular iodine cations. Similarly, we present total collision cross section and charge-exchange cross sections for atomic iodine cations for center-of-mass collision energies ranging from 0.67 to 167 eV. Time-of-flight measurements of the collision products allow determination of velocity distributions, which show evidence of complex formation of I3+ from the I+ + I2 reaction at collision energies below 6 eV. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ION beams KW - RESEARCH KW - CHEMICAL reactions KW - IODINE KW - HALL effect KW - CROSS-sectional method N1 - Accession Number: 101117342; Hause, Michael L. 1 Prince, Benjamin D. 2 Bemish, Raymond J. 2; Affiliation: 1: Institute for Scientific Research, Boston College, Chestnut Hill, Massachusetts 02159, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, Albuquerque, New Mexico 87117, USA; Source Info: 2015, Vol. 142 Issue 7, p1; Subject Term: ION beams; Subject Term: RESEARCH; Subject Term: CHEMICAL reactions; Subject Term: IODINE; Subject Term: HALL effect; Subject Term: CROSS-sectional method; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 11p; Illustrations: 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1063/1.4907602 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101117342&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hussein, Ahmed M. AU - Rao, Satish I. AU - Uchic, Michael D. AU - Dimiduk, Dennis M. AU - El-Awady, Jaafar A. T1 - Microstructurally based cross-slip mechanisms and their effects on dislocation microstructure evolution in fcc crystals. JO - Acta Materialia JF - Acta Materialia Y1 - 2015/02/15/ VL - 85 M3 - Article SP - 180 EP - 190 SN - 13596454 AB - Three newly identified cross-slip mechanisms from atomistic simulations of fcc crystals, namely surface, bulk and intersection cross-slip types, were hierarchically informed into discrete dislocation dynamics simulations. The influence of each cross-slip type on the evolution of the dislocation microstructure in face-centered cubic microcrystals having different crystal sizes and initial dislocation densities was investigated. Dislocation pattern formation, surface slip localization and initial strain hardening were observed, in agreement with experimental observations, and possible explanations are given in the light of these simulations. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FACE centered cubic structure KW - MICROSTRUCTURE KW - DISLOCATIONS in crystals KW - EVOLUTIONARY theories KW - STRAIN hardening KW - SLIPS (Material science) KW - Cross-slip KW - Dislocation dynamics KW - Dislocation patterning KW - Strain hardening N1 - Accession Number: 100365292; Hussein, Ahmed M. 1; Email Address: ahussei4@jhu.edu Rao, Satish I. 2,3 Uchic, Michael D. 4 Dimiduk, Dennis M. 4 El-Awady, Jaafar A. 1; Email Address: jelawady@jhu.edu; Affiliation: 1: Department of Mechanical Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD 21218-2682, USA 2: UES Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432-1894, USA 3: Institute of Mechanical Engineering, EPFL, Lausanne, Switzerland 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Feb2015, Vol. 85, p180; Subject Term: FACE centered cubic structure; Subject Term: MICROSTRUCTURE; Subject Term: DISLOCATIONS in crystals; Subject Term: EVOLUTIONARY theories; Subject Term: STRAIN hardening; Subject Term: SLIPS (Material science); Author-Supplied Keyword: Cross-slip; Author-Supplied Keyword: Dislocation dynamics; Author-Supplied Keyword: Dislocation patterning; Author-Supplied Keyword: Strain hardening; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.actamat.2014.10.067 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100365292&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eyet, Nicole AU - Melko, Joshua J. AU - Ard, Shaun G. AU - Viggiano, Albert A. T1 - Effect of higher order solvation and temperature on SN2 and E2 reactivity. JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2015/02/15/ VL - 378 M3 - Article SP - 54 EP - 58 SN - 13873806 AB - The reactivity of microsolvated fluoride ions, F − (CH 3 OH) 0–2 , with methyl, ethyl, n -propyl, and t -butyl bromide is evaluated over a broad range of temperatures. Significant decreases in reactivity are observed as either solvation or temperature increases. Increasing solvation increases sensitivity to the reaction barrier as revealed by a larger temperature dependence. These reactions are dominated by an S N 2 mechanism for the methyl bromide reaction, while the S N 2 and E2 mechanisms compete for the reactions with ethyl and n -propyl bromide reactions. The elimination mechanism, with some association, dominates the t -butyl bromide reactions. In all cases the unsolvated bromide ion is the primary ionic product. Branching ratios are discussed in both qualitative and quantitative terms for all reactions at 300 K. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLVATION KW - NUCLEOPHILIC reactions KW - TEMPERATURE effect KW - REACTIVITY (Chemistry) KW - FLUORIDES KW - METHANOL KW - Elimination KW - Microsolvation KW - SIFT KW - Substitution N1 - Accession Number: 101911473; Eyet, Nicole 1; Email Address: neyet@anselm.edu Melko, Joshua J. 2 Ard, Shaun G. 2 Viggiano, Albert A. 2; Email Address: albert.viggiano@us.af.mil; Affiliation: 1: Department of Chemistry, St. Anselm College, 100 Saint Anselm Drive, Manchester, NH 03102, United States 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, NM 87117-5776, United States; Source Info: Feb2015, Vol. 378, p54; Subject Term: SOLVATION; Subject Term: NUCLEOPHILIC reactions; Subject Term: TEMPERATURE effect; Subject Term: REACTIVITY (Chemistry); Subject Term: FLUORIDES; Subject Term: METHANOL; Author-Supplied Keyword: Elimination; Author-Supplied Keyword: Microsolvation; Author-Supplied Keyword: SIFT; Author-Supplied Keyword: Substitution; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.ijms.2014.07.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101911473&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sawyer, Jordan C. AU - Shuman, Nicholas S. AU - Wiens, Justin P. AU - Viggiano, Albert A. T1 - Kineticsand Product Branching Fractions of Reactionsbetween a Cation and a Radical: Ar++ CH3andO2++ CH3. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2015/02/12/ VL - 119 IS - 6 M3 - Article SP - 952 EP - 958 SN - 10895639 AB - A novel technique is described forthe measurement of rate constantsand product branching fractions of thermal reactions between cationand radical species. The technique is a variant of the variable electronand neutral density attachment mass spectrometry (VENDAMS) method,employing a flowing afterglow–Langmuir probe apparatus. A radicalspecies is produced in situvia dissociative electronattachment to a neutral precursor; this allows for a quantitativederivation of the radical concentration and, as a result, a quantitativedetermination of rate constants. The technique is applied to the reactionsof Ar+and O2+with CH3at 300 K. The Ar++ CH3reaction proceedsnear the collisional rate constant of 1.1 × 10–9cm3s–1and has three product channels:→ CH3++ Ar (k= 5 ±2 × 10–10cm3s–1), → CH2++ H + Ar (k= 7 ± 2 × 10–10cm3s–1), → CH++ H2+ Ar (k= 5 ± 3 × 10–11cm3s–1). The O2++ CH3reaction is also efficient, with direct charge transfer yieldingCH3+as the primary product channel. Severalresults needed to support these measurements are reported, includingthe kinetics of Ar+and O2+withCH3I, electron attachment to CH3I, and mutualneutralization of CH3+and CH2+with I–. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL kinetics KW - BRANCHING ratios (Nuclear physics) KW - CHEMICAL reactions KW - METHYL groups KW - CATIONS -- Analysis KW - RADICALS (Chemistry) KW - ARGON -- Analysis N1 - Accession Number: 108582595; Sawyer, Jordan C. 1 Shuman, Nicholas S. 1 Wiens, Justin P. 1 Viggiano, Albert A. 1; Affiliation: 1: Air Force Research Laboratory,Space Vehicles Directorate, KirtlandAFB, New Mexico 87117, United States; Source Info: Feb2015, Vol. 119 Issue 6, p952; Subject Term: CHEMICAL kinetics; Subject Term: BRANCHING ratios (Nuclear physics); Subject Term: CHEMICAL reactions; Subject Term: METHYL groups; Subject Term: CATIONS -- Analysis; Subject Term: RADICALS (Chemistry); Subject Term: ARGON -- Analysis; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108582595&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fan, Jing AU - Li, Yannian AU - Bisoyi, Hari Krishna AU - Zola, Rafael S. AU - Yang, Deng-ke AU - Bunning, Timothy J. AU - Weitz, David A. AU - Li, Quan T1 - Light-Directing Omnidirectional Circularly Polarized Reflection from Liquid-Crystal Droplets. JO - Angewandte Chemie JF - Angewandte Chemie Y1 - 2015/02/09/ VL - 127 IS - 7 M3 - Article SP - 2188 EP - 2192 SN - 00448249 AB - Constructing and tuning self-organized three-dimensional (3D) superstructures with tailored functionality is crucial in the nanofabrication of smart molecular devices. Herein we fabricate a self-organized, phototunable 3D photonic superstructure from monodisperse droplets of one-dimensional cholesteric liquid crystal (CLC) containing a photosensitive chiral molecular switch with high helical twisting power. The droplets are obtained by a glass capillary microfluidic technique by dispersing into PVA solution that facilitates planar anchoring of the liquid-crystal molecules at the droplet surface, as confirmed by the observation of normal incidence selective circular polarized reflection in all directions from the core of individual droplet. Photoirradiation of the droplets furnishes dynamic reflection colors without thermal relaxation, whose wavelength can be tuned reversibly by variation of the irradiation time. The results provided clear evidence on the phototunable reflection in all directions. [ABSTRACT FROM AUTHOR] AB - Copyright of Angewandte Chemie is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystal devices KW - NANOFABRICATION KW - DROPS KW - CHOLESTERIC liquid crystals KW - IRRADIATION KW - Farbe KW - Flüssigkristalltröpfchen KW - Mikrofluidik KW - Photonische Kristalle KW - Selektive Reflexion N1 - Accession Number: 100800815; Fan, Jing 1 Li, Yannian 2 Bisoyi, Hari Krishna 2 Zola, Rafael S. 3 Yang, Deng-ke 2 Bunning, Timothy J. 4 Weitz, David A. 1,5 Li, Quan 2; Affiliation: 1: School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138 (USA) 2: Liquid Crystal Institute and Chemical Physics, Interdisciplinary Program, Kent State University, Kent, OH 44242 (USA) 3: Departamento de Física, Universidade Tecnológica Federal do Paraná-Apucarana, PR 86812-460 (Brazil) 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Dayton, OH 45433 (USA) 5: Department of Physics, Harvard University, Cambridge, MA 02138 (USA); Source Info: Feb2015, Vol. 127 Issue 7, p2188; Subject Term: LIQUID crystal devices; Subject Term: NANOFABRICATION; Subject Term: DROPS; Subject Term: CHOLESTERIC liquid crystals; Subject Term: IRRADIATION; Author-Supplied Keyword: Farbe; Author-Supplied Keyword: Flüssigkristalltröpfchen; Author-Supplied Keyword: Mikrofluidik; Author-Supplied Keyword: Photonische Kristalle; Author-Supplied Keyword: Selektive Reflexion; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1002/ange.201410788 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100800815&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Webster, P. T. AU - Riordan, N. A. AU - Liu, S. AU - Steenbergen, E. H. AU - Synowicki, R. A. AU - Zhang, Y.-H. AU - Johnson, S. R. T1 - Absorption properties of type-II InAs/InAsSb superlattices measured by spectroscopic ellipsometry. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2015/02/09/ VL - 106 IS - 6 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00036951 AB - Strain-balanced InAs/InAsSb superlattices offer access to the mid- to long-wavelength infrared region with what is essentially a ternary material system at the GaSb lattice constant. The absorption coefficients of InAs/InAsSb superlattices grown by molecular beam epitaxy on (100)-oriented GaSb substrates are measured at room temperature over the 30 to 800 meV photon energy range using spectroscopic ellipsometry, and the miniband structure of each superlattice is calculated using a Kronig-Penney model. The InAs/InAsSb conduction band offset is used as a fitting parameter to align the calculated superlattice ground state transition energy to the measured absorption onset at room temperature and to the photoluminescence peak energy at low temperature. It is observed that the ground state absorption coefficient and transition strength are proportional to the square of the wavefunction overlap and the ground state absorption coefficient approaches a maximum value of around 5780 cm-1 as the wavefunction overlap approaches 100%. The absorption analysis of these samples indicates that the optical joint density of states is weakly dependent on the period thickness and Sb content of the superlattice, and that wavefunction overlap is the principal design parameter in terms of obtaining strong absorption in these structures. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - INDIUM arsenide antimonide KW - INDIUM arsenide KW - ABSORPTION KW - ELLIPSOMETRY N1 - Accession Number: 101021722; Webster, P. T. 1 Riordan, N. A. 1 Liu, S. 1 Steenbergen, E. H. 2 Synowicki, R. A. 3 Zhang, Y.-H. 1 Johnson, S. R. 1; Email Address: shane.johnson@asu.edu; Affiliation: 1: Center for Photonics Innovation and School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA 2: U.S. Air Force Research Laboratory, AFRL/RXAN, Wright Patterson, Ohio 45433, USA 3: J. A. Woollam Co., Inc., 645 M. Street, Suite 102, Lincoln, Nebraska 68508, USA; Source Info: 2015, Vol. 106 Issue 6, p1; Subject Term: SUPERLATTICES; Subject Term: INDIUM arsenide antimonide; Subject Term: INDIUM arsenide; Subject Term: ABSORPTION; Subject Term: ELLIPSOMETRY; Number of Pages: 5p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.4908255 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101021722&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beck, Joseph A. AU - Brown, Jeffrey M. AU - Scott-Emuakpor, Onome E. AU - Cross, Charles J. AU - Slater, Joseph C. T1 - Dynamic response characteristics of dual flow-path integrally bladed rotors. JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2015/02/03/ VL - 336 M3 - Article SP - 150 EP - 163 SN - 0022460X AB - New turbine engine designs requiring secondary flow compression often look to dual flow-path integrally bladed rotors (DFIBRs) since these stages have the ability to perform work on the secondary, or bypassed, flow-field. While analogous to traditional integrally bladed rotor stages, DFIBR designs have many differences that result in unique dynamic response characteristics that must be understood to avoid fatigue. This work investigates these characteristics using reduced-order models (ROMs) that incorporate mistuning through perturbations to blade frequencies. This work provides an alternative to computationally intensive geometric-mistuning approaches for DFIBRs by utilizing tuned blade mode reductions and substructure coupling in cyclic coordinates. Free and forced response results are compared to full finite element model (FEM) solutions to determine if any errors are related to the reduced-order model formulation reduction methods. It is shown that DFIBRs have many more frequency veering regions than their single flow-path integrally blade rotor (IBR) counterparts. Modal families are shown to transition between system, inner-blade, and outer-blade motion. Furthermore, findings illustrate that while mode localization of traditional IBRs is limited to a single or small subset of blades, DFIBRs can have modal energy localized to either an inner- or outer-blade set resulting in many blades responding above tuned levels. Lastly, ROM forced response predictions compare well to full FEM predictions for the two test cases shown. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TURBINES -- Design & construction KW - PATH integrals KW - COMPRESSION loads KW - ROTORS KW - REDUCED-order models KW - COMPUTATIONAL fluid dynamics N1 - Accession Number: 99513752; Beck, Joseph A. 1; Email Address: Joseph.Beck.8@us.af.mil Brown, Jeffrey M. 1; Email Address: Jeffrey.Brown.70@us.af.mil Scott-Emuakpor, Onome E. 1; Email Address: Onome.Scott-Emuakpor.1@us.af.mil Cross, Charles J. 1; Email Address: Charles.Cross.1@us.af.mil Slater, Joseph C. 2; Email Address: Joseph.Slater@wright.edu; Affiliation: 1: Aerospace Systems Directorate, Air Force Research Laboratory, 1950 5th Street, Wright-Patterson Air Force Base, OH 45433, USA 2: Department of Mechanical and Materials Engineering, 3640 Colonel Glenn Hwy, Dayton, OH 45435, USA; Source Info: Feb2015, Vol. 336, p150; Subject Term: TURBINES -- Design & construction; Subject Term: PATH integrals; Subject Term: COMPRESSION loads; Subject Term: ROTORS; Subject Term: REDUCED-order models; Subject Term: COMPUTATIONAL fluid dynamics; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.jsv.2014.10.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99513752&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martinez, Oscar AU - Crabtree, Kyle N. AU - Gottlieb, Carl A. AU - Stanton, John F. AU - McCarthy, Michael C. T1 - An Accurate Molecular Structure of Phenyl, the Simplest Aryl Radical. JO - Angewandte Chemie JF - Angewandte Chemie Y1 - 2015/02/02/ VL - 127 IS - 6 M3 - Article SP - 1828 EP - 1831 SN - 00448249 AB - The phenyl radical (C6H5.) is the prototypical σ-type aryl radical and one of the most common aromatic building blocks for larger ring molecules. Using a combination of rotational spectroscopy of singly substituted isotopic species and vibrational corrections calculated theoretically, an extremely accurate molecular structure has been determined. Relative to benzene, the phenyl radical has a substantially larger C-Cipso-C bond angle [125.8(3)° vs. 120°], and a shorter distance [2.713(3) Å vs. 2.783(2) Å] between the ipso and para carbon atoms. [ABSTRACT FROM AUTHOR] AB - Copyright of Angewandte Chemie is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARYL radicals KW - MOLECULAR structure KW - PHENYL compounds KW - CARBON-hydrogen bonds (Chemistry) KW - SUBSTITUENTS (Chemistry) KW - AB initio methods (Quantum mechanics) KW - Ab-initio-Rechnungen KW - Molekülstruktur KW - Rotationsspektroskopie N1 - Accession Number: 100766944; Martinez, Oscar 1,2 Crabtree, Kyle N. 1,3 Gottlieb, Carl A. 1 Stanton, John F. 4 McCarthy, Michael C. 1; Affiliation: 1: Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (USA) 2: Present address: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, NM 87117 (USA) 3: Present address: Department of Chemistry, University of California-Davis, Davis, CA 95616 (USA) 4: Institute for Theoretical Chemistry, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712 (USA); Source Info: Feb2015, Vol. 127 Issue 6, p1828; Subject Term: ARYL radicals; Subject Term: MOLECULAR structure; Subject Term: PHENYL compounds; Subject Term: CARBON-hydrogen bonds (Chemistry); Subject Term: SUBSTITUENTS (Chemistry); Subject Term: AB initio methods (Quantum mechanics); Author-Supplied Keyword: Ab-initio-Rechnungen; Author-Supplied Keyword: Molekülstruktur; Author-Supplied Keyword: Rotationsspektroskopie; Number of Pages: 4p; Document Type: Article L3 - 10.1002/ange.201409896 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100766944&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gottlieb, Carl A. AU - McCarthy, Michael C. AU - Martinez, Oscar AU - Crabtree, Kyle N. AU - Stanton, John F. T1 - An Accurate Molecular Structure of Phenyl, the Simplest Aryl Radical. JO - Angewandte Chemie International Edition JF - Angewandte Chemie International Edition Y1 - 2015/02/02/ VL - 54 IS - 6 M3 - Article SP - 1808 EP - 1811 SN - 14337851 AB - The phenyl radical (C6H5.) is the prototypical σ-type aryl radical and one of the most common aromatic building blocks for larger ring molecules. Using a combination of rotational spectroscopy of singly substituted isotopic species and vibrational corrections calculated theoretically, an extremely accurate molecular structure has been determined. Relative to benzene, the phenyl radical has a substantially larger C-Cipso-C bond angle [125.8(3)° vs. 120°], and a shorter distance [2.713(3) Å vs. 2.783(2) Å] between the ipso and para carbon atoms. [ABSTRACT FROM AUTHOR] AB - Copyright of Angewandte Chemie International Edition is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHENYL compounds KW - RESEARCH KW - MOLECULAR structure KW - ARYL radicals KW - BENZENE compounds KW - ISOTOPES -- Analysis KW - SPECTRUM analysis KW - ab initio calculations KW - molecular structure KW - rotational spectroscopy N1 - Accession Number: 100765756; Gottlieb, Carl A. 1 McCarthy, Michael C. 1 Martinez, Oscar 1,2 Crabtree, Kyle N. 1,3 Stanton, John F. 4; Affiliation: 1: Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (USA) 2: Present address: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, NM 87117 (USA) 3: Present address: Department of Chemistry, University of California-Davis, Davis, CA 95616 (USA) 4: Institute for Theoretical Chemistry, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712 (USA); Source Info: Feb2015, Vol. 54 Issue 6, p1808; Subject Term: PHENYL compounds; Subject Term: RESEARCH; Subject Term: MOLECULAR structure; Subject Term: ARYL radicals; Subject Term: BENZENE compounds; Subject Term: ISOTOPES -- Analysis; Subject Term: SPECTRUM analysis; Author-Supplied Keyword: ab initio calculations; Author-Supplied Keyword: molecular structure; Author-Supplied Keyword: rotational spectroscopy; Number of Pages: 4p; Document Type: Article L3 - 10.1002/anie.201409896 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100765756&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shamberger, Patrick J. AU - O’Malley, Matthew J. T1 - Heterogeneous nucleation of thermal storage material LiNO3·3H2O from stable lattice-matched nucleation catalysts. JO - Acta Materialia JF - Acta Materialia Y1 - 2015/02// VL - 84 M3 - Article SP - 265 EP - 274 SN - 13596454 AB - Promoting heterogeneous nucleation in liquid to solid phase transformations decreases undercooling (Δ T ) and can dramatically alter the microstructure of a material. However, the design of material-specific nucleation catalysts remains non-trivial, especially for phases with complex structures. Here, we investigate heterogeneous nucleation in the technologically important thermal energy storage material LiNO 3 ·3H 2 O (LNH), and demonstrate a close correlation of Δ T with lattice mismatch between planes of closely packed coordination polyhedra in a number of potential nucleation catalysts. This result supports extending the planar matching model for nucleation catalyst design to more complex structures by focusing on lattice matching of planes containing closely packed coordination polyhedra. In particular, Cu 3 (OH) 5 (NO 3 )·2(H 2 O) (CHNH) has a lattice mismatch of δa = −0.03, δc = −0.01 for the orientation (0 1 0) LNH ||(1 0 0) CHNH and [1 0 0] LNH ||[0 1 0] CHNH , and decreases Δ T by up to 66% over previously known catalyst phases. CHNH has a layered structure which delaminates along (1 0 0) CHNH , maximizing the number of potential nucleation sites for LNH along this lattice-matched plane and potentially contributing to the nucleation catalyst activity of this phase. Mixtures of LNH/CHNH are quite stable despite large numbers of cycles ( N > 900 cycles), and aging at elevated temperature for extended periods of time ( t > 250 days). [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LITHIUM compounds KW - HETEROGENOUS nucleation KW - HEAT storage KW - METAL catalysts KW - PHASE transformations (Physics) KW - SOLID-liquid interfaces KW - METALS -- Microstructure KW - Crystallization KW - Heteroepitaxy KW - Nucleation of phase transformations KW - Undercooling N1 - Accession Number: 100025035; Shamberger, Patrick J. 1; Email Address: patrick.shamberger@tamu.edu O’Malley, Matthew J. 2; Affiliation: 1: Department of Materials Science and Engineering, Dwight Look College of Engineering, Texas A&M University, College Station, TX 77843, USA 2: Composites Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH 45433, USA; Source Info: Feb2015, Vol. 84, p265; Subject Term: LITHIUM compounds; Subject Term: HETEROGENOUS nucleation; Subject Term: HEAT storage; Subject Term: METAL catalysts; Subject Term: PHASE transformations (Physics); Subject Term: SOLID-liquid interfaces; Subject Term: METALS -- Microstructure; Author-Supplied Keyword: Crystallization; Author-Supplied Keyword: Heteroepitaxy; Author-Supplied Keyword: Nucleation of phase transformations; Author-Supplied Keyword: Undercooling; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.actamat.2014.10.051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100025035&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gobal, Koorosh AU - Grandhi, Ramana V. AU - Kolonay, Raymond M. T1 - Continuum Sensitivity Analysis for Structural Shape Design Variables Using Finite-Volume Method. JO - AIAA Journal JF - AIAA Journal Y1 - 2015/02// VL - 53 IS - 2 M3 - Article SP - 347 EP - 355 SN - 00011452 AB - Two of the most important requirements when using gradient-based optimization for fluid-structure interaction problems are efficiency and accuracy in calculating the sensitivities. As a result, analytical continuum sensitivity formulations are finding their place due to their lower cost and accuracy. However, the necessary computation of mesh sensitivities in shape optimization is becoming a bottleneck, especially when handling complex geometries. In this research, an algorithm based on continuum sensitivity analysis for structural shape design variables is developed. In the proposed method, regularized Heaviside functions are used to modify the properties of mesh cells. Therefore, mesh dependency is removed from the sensitivity equations. This method does not require moving or modifying the mesh to handle the shape changes. This method is applied to two different validation cases where continuum sensitivity equations are formulated and solved. Validation cases are selected as a structural and thermal problem to show the applicability of this method for different physics. The results demonstrate the efficiency of the proposed algorithm for design-optimization framework. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUID structure KW - RESEARCH KW - FLUIDS -- Properties KW - SENSITIVITY analysis KW - MATHEMATICAL optimization KW - CONTINUUM (Mathematics) N1 - Accession Number: 102656555; Gobal, Koorosh 1; Email Address: gobal.2@wright.edu Grandhi, Ramana V. 2 Kolonay, Raymond M. 3; Affiliation: 1: Graduate Research Assistant, Department of Mechanical and Materials Engineering, Wright State University, Dayton, Ohio 45435 2: Distinguished Professor, Department of Mechanical and Materials Engineering, Wright State University, Dayton, Ohio 45435 3: Director, Multidisciplinary Science and Technology Center, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Feb2015, Vol. 53 Issue 2, p347; Subject Term: FLUID structure; Subject Term: RESEARCH; Subject Term: FLUIDS -- Properties; Subject Term: SENSITIVITY analysis; Subject Term: MATHEMATICAL optimization; Subject Term: CONTINUUM (Mathematics); Number of Pages: 9p; Document Type: Article L3 - 10.2514/1J053146 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102656555&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chapleau, Richard R. AU - Frey, Jeanette S. AU - Riddle, David S. AU - Ruiz, Oscar N. AU - Mauzy, Camilla A. T1 - Measuring Single-Domain Antibody Interactions with Epitopes in Jet Fuel Using Microscale Thermophoresis. JO - Analytical Letters JF - Analytical Letters Y1 - 2015/02// VL - 48 IS - 3 M3 - Article SP - 526 EP - 530 PB - Taylor & Francis Ltd SN - 00032719 AB - Widely recognized as the gold standard for biological recognition, antibodies have been used to develop bioscavengers, enzyme-like catalytic therapies, and highly specific diagnostic clinical tests. The discovery of camelid antibodies in the 1990s has extended the useful range of antibodies into pH extremes, high temperature, and high salt conditions due to increased stability. However, determining the binding properties of these molecules prior to use under these conditions has not been widely employed because the most precise biophysical methods, surface plasmon resonance, and isothermal titration calorimetry, are not compatible with highly complex matrices. Herein, we demonstrate the use of microscale thermophoresis as a rapid, simple method to detect binding of a single-domain antibody in the presence of jet fuel/water mixes; a complex, harsh environment. This work provides key data to quantifying binding for the development of a sensor for detection of microbial growth in fuel. [ABSTRACT FROM AUTHOR] AB - Copyright of Analytical Letters is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMMUNOGLOBULINS KW - JET planes -- Fuel KW - ANTIGENIC determinants KW - THERMOPHORESIS KW - PH effect KW - HIGH temperatures KW - Microscale thermophoresis KW - Nanobody KW - Single domain antibody KW - VHH-domain N1 - Accession Number: 99744400; Chapleau, Richard R. 1,2; Email Address: richard.chapleau.ctr@us.af.mil Frey, Jeanette S. 1,2 Riddle, David S. 1,2 Ruiz, Oscar N. 3 Mauzy, Camilla A. 1; Affiliation: 1: Molecular Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio, USA 2: Henry M. Jackson Foundation for the Advancement of Military Medicine, Wright Patterson Air Force Base, Ohio, USA 3: Fuels and Energy Branch, Turbine Engine Division, Aerospace Systems Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio, USA; Source Info: 2015, Vol. 48 Issue 3, p526; Subject Term: IMMUNOGLOBULINS; Subject Term: JET planes -- Fuel; Subject Term: ANTIGENIC determinants; Subject Term: THERMOPHORESIS; Subject Term: PH effect; Subject Term: HIGH temperatures; Author-Supplied Keyword: Microscale thermophoresis; Author-Supplied Keyword: Nanobody; Author-Supplied Keyword: Single domain antibody; Author-Supplied Keyword: VHH-domain; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 5p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1080/00032719.2014.947535 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99744400&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Crafton, Jim AU - Forlines, Alan AU - Palluconi, Steve AU - Hsu, Kuang-Yu AU - Carter, Campbell AU - Gruber, Mark T1 - Investigation of transverse jet injections in a supersonic crossflow using fast-responding pressure-sensitive paint. JO - Experiments in Fluids JF - Experiments in Fluids Y1 - 2015/02// VL - 56 IS - 2 M3 - Article SP - 1 EP - 15 SN - 07234864 AB - Traditional pressure-sensitive paint (PSP) systems can provide data with high spatial resolution; however, the bandwidth is limited to a few Hz by the response time of the paint. Fast-responding paints have demonstrated response times of up to 100 kHz. Ultra-bright LEDs and fast-framing cameras combined with a porous polymer PSP can be used to produce a system capable of both high spatial resolution and high temporal bandwidth. Measurements of mean and unsteady pressure have been acquired on an experimental setup composed of a Mach-2 channel flow with transverse jet injection. The unsteady pressure data clearly resolve structures not present in the mean pressure data, including multiple lambda shocks upstream of a strong bow shock, high-frequency perturbations in the location of these shocks, and significant deformations of the bow shock structure. Time series of data can be extracted at each pixel, and the spectral content and phase relationship of the flow can be presented as maps of pressure fluctuations at specific frequencies or as correlation coefficients between a control point and the remaining flow. This type of map can be created using arrays of fast pressure transducers; here, we present data representing an array of over 26,000 fast pressure transducers. [ABSTRACT FROM AUTHOR] AB - Copyright of Experiments in Fluids is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRESSURE-sensitive paint KW - RESEARCH KW - PAINT KW - POROUS polymers KW - PRESSURE transducers KW - AIR pressure -- Measurement -- Equipment & supplies N1 - Accession Number: 100710621; Crafton, Jim 1; Email Address: jwcrafton@innssi.com Forlines, Alan 1 Palluconi, Steve 1 Hsu, Kuang-Yu 1 Carter, Campbell 2 Gruber, Mark 2; Affiliation: 1: Innovative Scientific Solutions, Inc., Dayton USA 2: Air Force Research Laboratory, Wright-Patterson AFB, Dayton USA; Source Info: Feb2015, Vol. 56 Issue 2, p1; Subject Term: PRESSURE-sensitive paint; Subject Term: RESEARCH; Subject Term: PAINT; Subject Term: POROUS polymers; Subject Term: PRESSURE transducers; Subject Term: AIR pressure -- Measurement -- Equipment & supplies; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 424950 Paint, Varnish, and Supplies Merchant Wholesalers; NAICS/Industry Codes: 444120 Paint and Wallpaper Stores; NAICS/Industry Codes: 416340 Paint, glass and wallpaper merchant wholesalers; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 15p; Document Type: Article L3 - 10.1007/s00348-014-1877-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100710621&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - HERNANDEZ, ELIZABETH CAMERON T1 - Is ''Mandatory Justice'' Right for the Military? JO - Federal Sentencing Reporter JF - Federal Sentencing Reporter Y1 - 2015/02// VL - 27 IS - 3 M3 - Article SP - 131 EP - 142 SN - 10539867 AB - The article offers information on the history, opportunities and challenges of the mandatory minimum punishments regime passed by the U.S. Congress for addressing the misconduct and indiscipline by military personnel under the Uniform Code of Military Justice in 1950. It informs that allegations of rape, sexual assault, and forcible sodomy are referred to a General Court-Martial, the most serious type of court-martial under the National Defense Authorization Act for Fiscal Year 2014. KW - MANDATORY minimum sentences KW - MILITARY personnel -- United States KW - COURTS-martial & courts of inquiry -- United States KW - SODOMY KW - SEXUAL assault -- Law & legislation KW - RAPE KW - LEGAL status, laws, etc. KW - UNITED States KW - LAW & legislation KW - UNITED States. Uniform Code of Military Justice KW - UNITED States. Congress N1 - Accession Number: 101681437; HERNANDEZ, ELIZABETH CAMERON 1; Affiliation: 1: United States Air Force, Judge Advocate General's Corps; Source Info: Feb2015, Vol. 27 Issue 3, p131; Subject Term: MANDATORY minimum sentences; Subject Term: MILITARY personnel -- United States; Subject Term: COURTS-martial & courts of inquiry -- United States; Subject Term: SODOMY; Subject Term: SEXUAL assault -- Law & legislation; Subject Term: RAPE; Subject Term: LEGAL status, laws, etc.; Subject Term: UNITED States; Subject Term: LAW & legislation; Company/Entity: UNITED States. Uniform Code of Military Justice Company/Entity: UNITED States. Congress; NAICS/Industry Codes: 921120 Legislative Bodies; Number of Pages: 12p; Document Type: Article L3 - 10.1525/fsr.2015.27.3.131 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101681437&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harvey, Benjamin G. AU - Meylemans, Heather A. AU - Haines, Shannon R. L. AU - Groshens, Thomas J. AU - Cambrea, Lee R. AU - Davis, Matthew C. AU - Lai, William W. AU - Guenthner, Andrew J. AU - Lamison, Kevin R. T1 - Renewable thermosetting resins and thermoplastics from vanillin. JO - Green Chemistry JF - Green Chemistry Y1 - 2015/02// VL - 17 IS - 2 M3 - Article SP - 1249 EP - 1258 SN - 14639262 AB - Two cyanate ester resins and a polycarbonate thermoplastic have been synthesized from vanillin. The bisphenol precursors were prepared by both an electrochemical route as well as by a McMurry coupling reaction. 1,2-Bis(4-cyanato-3-methoxyphenyl)ethene (6) had a high melting point of 237 °C and did not cure completely under a standard cure protocol. In contrast, the reduced version, 1,2-bis(4-cyanato-3-methoxyphenyl)ethane (7) melted at 190 °C and underwent complete cure to form a thermoset material with Tg = 202 °C. 7 showed thermal stability up to 335 °C and decomposed via formation of phenolics and isocyanic acid. A polycarbonate was then synthesized from the reduced bisphenol by a transesterification reaction with diphenylcarbonate. The polymer had Mn = 3588, Mw/Mn = 1.9, and a Tg of 86 °C. TGA/FTIR data suggested that the polycarbonate decomposed via formation of benzodioxolones with concomitant elimination of methane. The results show that vanillin is a useful precursor to both thermosetting resins and thermoplastics without significant modification. [ABSTRACT FROM AUTHOR] AB - Copyright of Green Chemistry is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOSETTING polymers KW - VANILLIN KW - THERMOPLASTICS KW - POLYCARBONATE resins KW - METHANE N1 - Accession Number: 100937979; Harvey, Benjamin G. 1 Meylemans, Heather A. 1 Haines, Shannon R. L. 1 Groshens, Thomas J. 1 Cambrea, Lee R. 1 Davis, Matthew C. 1 Lai, William W. 1 Guenthner, Andrew J. 2 Lamison, Kevin R. 3; Affiliation: 1: US NAVY, NAWCWD, Research Department, Chemistry Division, China Lake, California 93555, USA 2: Air Force Research Laboratory, Rocket Propulsion Division, Edwards AFB, California 93524, USA 3: ERC, Inc., Air Force Research Laboratory, Rocket Propulsion Division, Edwards AFB, California 93524, USA; Source Info: 2015, Vol. 17 Issue 2, p1249; Subject Term: THERMOSETTING polymers; Subject Term: VANILLIN; Subject Term: THERMOPLASTICS; Subject Term: POLYCARBONATE resins; Subject Term: METHANE; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1039/c4gc01825g UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100937979&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guo, Lilin AU - Deng, Hai AU - Himed, Braham AU - Ma, Tan AU - Geng, Zhe T1 - Waveform Optimization for Transmit Beamforming With MIMO Radar Antenna Arrays. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2015/02// VL - 63 IS - 2 M3 - Article SP - 543 EP - 552 SN - 0018926X AB - For coherent MIMO radar the optimal target signal processing can be achieved for any transmitted waveforms or radiation beam pattern, making transmit beamforming through waveform design possible without degrading target detection performance. In this work, an innovative waveform optimization approach termed phase-only variable metric method (POVMM) is proposed for coherent MIMO radar waveform design to form a desired transmit beam pattern such as one with radiation nulls in certain directions. The waveform design is carried out by minimizing the radiation powers of the MIMO radar antenna in the selected directions with optimization variables constrained to the waveform phases only. The gradient function of the cost function with regard to waveform phases is analytically derived for the optimization and the POVMM is developed based on the variable metric methods with a flexible search step sizing strategy for improving optimization efficiency. The proposed approach is validated with various designs and simulations. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MIMO radar KW - SIGNAL processing KW - MATHEMATICAL optimization KW - ANTENNA radiation patterns KW - RADAR antennas KW - Antenna array KW - Antenna arrays KW - Array signal processing KW - Cost function KW - optimization algorithm KW - phased arrays KW - Radar antennas KW - transmit beamforming KW - Vectors KW - waveform design N1 - Accession Number: 100776943; Guo, Lilin 1 Deng, Hai 1 Himed, Braham 2 Ma, Tan 1 Geng, Zhe 1; Affiliation: 1: Department of Electrical and Computer Engineering, Florida International University, Miami, FL, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Feb2015, Vol. 63 Issue 2, p543; Subject Term: MIMO radar; Subject Term: SIGNAL processing; Subject Term: MATHEMATICAL optimization; Subject Term: ANTENNA radiation patterns; Subject Term: RADAR antennas; Author-Supplied Keyword: Antenna array; Author-Supplied Keyword: Antenna arrays; Author-Supplied Keyword: Array signal processing; Author-Supplied Keyword: Cost function; Author-Supplied Keyword: optimization algorithm; Author-Supplied Keyword: phased arrays; Author-Supplied Keyword: Radar antennas; Author-Supplied Keyword: transmit beamforming; Author-Supplied Keyword: Vectors; Author-Supplied Keyword: waveform design; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TAP.2014.2382637 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100776943&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ren, Saiyu AU - Abraham, Isaac AU - Hong, Seng T1 - A 1-6 GHz analog radio frequency power driver in 90 nm complementary metal-oxide semiconductor technology for wireless applications. JO - International Journal of Circuit Theory & Applications JF - International Journal of Circuit Theory & Applications Y1 - 2015/02// VL - 43 IS - 2 M3 - Article SP - 263 EP - 276 SN - 00989886 AB - One of the most challenging subsystems for integrated radio frequency (RF) complementary metal-oxide semiconductor (CMOS) solutions is the power amplifier. A 1-6 GHz RF power driver (RFPD) in 90 nm CMOS technology is presented, which receives signals from on-chip RF signal chain components at −12 dBm power levels and produces a 0 dBm signal to on-chip or off-chip 50 Ω loads. A unique unit cell design is developed for the RFPD to offset issues associated with very wide multi-fingered transistors. The RF driver was fabricated as a stand-alone sub-circuit on a 90 nm CMOS die with other sub-circuits. Experimental tests confirmed that the on-chip RFPD operates up to 6 GHz and is able to drive 50 Ω loads to the desired 0 dBm power level. Spur free dynamic range exceeded 70 dB. The measured power gain was 11.6 dB at 3 GHz. The measured 1 dB compression point and input third-order intercept point (IIP3) were −4.7 dBm and −0.5 dBm, respectively. Also, included are modeling, simulation, and measured results addressing issues associated with interfacing the die to a package with pinouts and the package to a printed circuit test fixture. The simulations were made through direct current (DC), alternating current (AC), and transient analysis with Cadence Analog Design Environment. The stability was also verified on the basis of phase margin simulations from extracted circuit net-lists. Copyright © 2013 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Circuit Theory & Applications is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO frequency KW - METAL oxide semiconductors KW - ANALOG CMOS integrated circuits KW - WIRELESS communication systems KW - DIRECT currents KW - ALTERNATING currents KW - CMOS analog circuit KW - CMOS RF power amplifier KW - RF power amplifier measurements KW - RF power driver KW - wireless communication N1 - Accession Number: 100641063; Ren, Saiyu 1 Abraham, Isaac 2 Hong, Seng 3; Affiliation: 1: Department of Electrical Engineering, Wright State University 2: Intel Corp 3: Air Force Research Laboratory; Source Info: Feb2015, Vol. 43 Issue 2, p263; Subject Term: RADIO frequency; Subject Term: METAL oxide semiconductors; Subject Term: ANALOG CMOS integrated circuits; Subject Term: WIRELESS communication systems; Subject Term: DIRECT currents; Subject Term: ALTERNATING currents; Author-Supplied Keyword: CMOS analog circuit; Author-Supplied Keyword: CMOS RF power amplifier; Author-Supplied Keyword: RF power amplifier measurements; Author-Supplied Keyword: RF power driver; Author-Supplied Keyword: wireless communication; NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 14p; Document Type: Article L3 - 10.1002/cta.1941 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100641063&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rizzetta, D.P. AU - Visbal, M.R. T1 - Delay of finite-span excrescence-induced transition using plasma-based control. JO - International Journal of Computational Fluid Dynamics JF - International Journal of Computational Fluid Dynamics Y1 - 2015/02// VL - 29 IS - 2 M3 - Article SP - 161 EP - 179 SN - 10618562 AB - Direct numerical simulations are carried out to explore the use of flow control that delays transition generated by excrescence on a plate-like geometry in subsonic flow. Both forward-facing and rearward-facing steps of small roughness heights are considered in the investigation. These are representative of joints and other surface imperfections on wing sections that disrupt laminar flow, thereby increasing skin friction and configuration drag. Unlike previous studies, the steps have a finite lateral extent, such that sharp edges occur in both the spanwise and streamwise directions, and provide a more realistic characterisation of misaligned panels in aerodynamic configurations. The effect of spanwise corners upon transition is examined, and dielectric barrier discharge plasma-based flow control is applied to delay transition and increase the extent of the laminar flow region. Solutions are obtained to the Navier– Stokes equations that were augmented by source terms used to represent body forces imparted by plasma actuators on the fluid. A simple phenomenological model provided these forces resulting from the electric field generated by the plasma. The numerical method is based upon a high-fidelity scheme and an implicit time-marching approach, on an overset mesh system that is used to represent the finite-span steps. Very small-amplitude numerical forcing is employed to generate perturbations, which are amplified by the geometric disturbances and result in transition, similar to the physical situation. Both continuous and pulsed operations of actuators are considered, and the effectiveness of the control is quantified. Transition with the forward-facing step is considerably exacerbated by the presence of a spanwise edge. Plasma control is minimally effective, even with the use of multiple actuators and increased applied force. For the rearward-facing step, transition is substantially delayed by plasma control with small force application. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Computational Fluid Dynamics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER simulation KW - SKIN friction (Aerodynamics) KW - FLOW control (Data transmission systems) KW - SURFACE roughness KW - ELECTRIC fields KW - PLASMA confinement KW - direct numerical simulation KW - excrescence-generated transition KW - high-order numerical method KW - large-eddy simulation KW - plasma-based control N1 - Accession Number: 102014492; Rizzetta, D.P. 1 Visbal, M.R. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, USA; Source Info: Feb2015, Vol. 29 Issue 2, p161; Subject Term: COMPUTER simulation; Subject Term: SKIN friction (Aerodynamics); Subject Term: FLOW control (Data transmission systems); Subject Term: SURFACE roughness; Subject Term: ELECTRIC fields; Subject Term: PLASMA confinement; Author-Supplied Keyword: direct numerical simulation; Author-Supplied Keyword: excrescence-generated transition; Author-Supplied Keyword: high-order numerical method; Author-Supplied Keyword: large-eddy simulation; Author-Supplied Keyword: plasma-based control; Number of Pages: 19p; Document Type: Article L3 - 10.1080/10618562.2015.1025766 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102014492&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Poggie, J. T1 - Multi-fluid modelling of pulsed discharges for flow control applications. JO - International Journal of Computational Fluid Dynamics JF - International Journal of Computational Fluid Dynamics Y1 - 2015/02// VL - 29 IS - 2 M3 - Article SP - 180 EP - 191 SN - 10618562 AB - Experimental evidence suggests that short-pulse dielectric barrier discharge actuators are effective for speeds corresponding to take-off and approach of large aircraft, and thus are a fruitful direction for flow control technology development. Large-eddy simulations have reproduced some of the main fluid dynamic effects. The plasma models used in such simulations are semi-empirical, however, and need to be tuned for each flowfield under consideration. In this paper, the discharge physics is examined in more detail with multi-fluid modelling, comparing a five-moment model (continuity, momentum, and energy equations) to a two-moment model (continuity and energy equations). A steady-state, one-dimensional discharge was considered first, and the five-moment model was found to predict significantly lower ionisation rates and number densities than the two-moment model. A two-dimensional, transient discharge problem with an elliptical cathode was studied next. Relative to the two-moment model, the five-moment model predicted a slower response to the activation of the cathode, and lower electron velocities and temperatures as the simulation approached steady-state. The primary reason for the differences in the predictions of the two models can be attributed to the effects of particle inertia, particularly electron inertia in the cathode layer. The computational cost of the five-moment model is only about twice that of the simpler variant, suggesting that it may be feasible to use the more sophisticated model in practical calculations for flow control actuator design. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Computational Fluid Dynamics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC discharges KW - FLOW (Fluid dynamics) KW - ACTUATORS KW - LARGE eddy simulation models KW - TWO-dimensional models KW - STEADY-state flow KW - flow control actuator KW - multi-fluid model KW - particle inertia KW - plasma KW - pulsed electrical discharge N1 - Accession Number: 102014491; Poggie, J. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, USA; Source Info: Feb2015, Vol. 29 Issue 2, p180; Subject Term: ELECTRIC discharges; Subject Term: FLOW (Fluid dynamics); Subject Term: ACTUATORS; Subject Term: LARGE eddy simulation models; Subject Term: TWO-dimensional models; Subject Term: STEADY-state flow; Author-Supplied Keyword: flow control actuator; Author-Supplied Keyword: multi-fluid model; Author-Supplied Keyword: particle inertia; Author-Supplied Keyword: plasma; Author-Supplied Keyword: pulsed electrical discharge; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1080/10618562.2015.1021694 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102014491&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ard, Shaun G. AU - Melko, Joshua J. AU - Jr.Martinez, Oscar AU - Shuman, Nicholas S. AU - Pedder, Randall E. AU - Taormina, Christopher R. AU - Viggiano, Albert A. T1 - Incorporating time-of-flight detection on a selected ion flow tube apparatus. JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2015/02// VL - 377 M3 - Article SP - 479 EP - 483 SN - 13873806 AB - A new ion detection scheme incorporating both time-of-flight and quadrupole instrumentation has been implemented on a variable temperature selected ion flow tube and is described here. The new detection region retains typical quadrupole detection for the study of most systems, and adds time-of-flight capability to study systems over a wide mass range while minimizing the effects of mass discrimination. Experiments verify the accuracy of the kinetics obtained with time-of-flight detection. We find excellent agreement with previously published rate constants and product branching for the reactions of Ar + with SF 6 and C 2 H 4 . Additionally, new results are presented for the reaction of Ar + with WF 6 , observing a rate constant of 1.23 × 10 −9 cm 3 s −1 , with product branching of 0.9 and 0.1 to WF 5 + and WF 6 + respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TIME-of-flight spectrometry KW - ION flow dynamics KW - QUADRUPOLES KW - TEMPERATURE effect KW - CHEMICAL kinetics KW - ION-molecule collisions KW - Flow tube KW - Ion-molecule reaction KW - Kinetics KW - Time-of-flight N1 - Accession Number: 101928634; Ard, Shaun G. 1 Melko, Joshua J. 1 Jr.Martinez, Oscar 1 Shuman, Nicholas S. 1 Pedder, Randall E. 2 Taormina, Christopher R. 2 Viggiano, Albert A. 1; Email Address: afrl.rvborgmailbox@kirtland.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, NM 87117-5776, USA 2: Ardara Technologies L.P., 12941 Route 993, Ardara, PA 15615, USA; Source Info: Feb2015, Vol. 377, p479; Subject Term: TIME-of-flight spectrometry; Subject Term: ION flow dynamics; Subject Term: QUADRUPOLES; Subject Term: TEMPERATURE effect; Subject Term: CHEMICAL kinetics; Subject Term: ION-molecule collisions; Author-Supplied Keyword: Flow tube; Author-Supplied Keyword: Ion-molecule reaction; Author-Supplied Keyword: Kinetics; Author-Supplied Keyword: Time-of-flight; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.ijms.2014.04.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101928634&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zeng, W. AU - Larsen, J.M. AU - Liu, G.R. T1 - Smoothing technique based crystal plasticity finite element modeling of crystalline materials. JO - International Journal of Plasticity JF - International Journal of Plasticity Y1 - 2015/02// VL - 65 M3 - Article SP - 250 EP - 268 SN - 07496419 AB - The smoothed finite element method (S-FEM) is known for its outstanding performance for solid mechanics problems, and working effectively with triangular or tetrahedral mesh that can be generated automatically for complicated geometries. In this work, a framework of S-FEM for modeling anisotropic crystalline plasticity is presented to simulate the mechanical behavior with rate-independence. The strain smoothing technique is extended to deal with finite strains in a nonlinear incremental integration procedure based on the Newton–Raphson scheme. The constitutive model utilizes a hyperelastic-based multiplicative plasticity method, which involves a local multiplicative decomposition of the deformation gradient into an elastic and a plastic part. The stress updates for a planar double-slip model exploit the return-mapping method with exponential map algorithm. The capability of the simulations to capture the strain localization and to handle plastic incompressibility of single crystal are demonstrated in representative examples. The proposed formulations and algorithms are also implemented to explore the mesoscopic and macroscopic elasto-plastic behavior of polycrystalline aggregates through modeling the synthetic microstructure constructed by Voronoi tessellation technique. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Plasticity is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASTICITY KW - PLASTIC crystals KW - CRYSTALLINE polymers KW - SOLID mechanics KW - ANISOTROPIC crystals KW - FINITE element method KW - SMOOTHING (Statistics) KW - B. Constitutive behaviour KW - B. Crystal plasticity KW - B. Finite strain KW - B. Polycrystalline material KW - Smoothed finite element method N1 - Accession Number: 115244551; Zeng, W. 1; Email Address: zengwe@mail.uc.edu Larsen, J.M. 2 Liu, G.R. 1; Affiliation: 1: CEAS-School of Aerospace Systems, University of Cincinnati, 2851 Woodside Dr, Cincinnati, OH 45221, USA 2: US Air Force Research Laboratory, AFRL/RX, WrightPatterson AFB, OH 45433, USA; Source Info: Feb2015, Vol. 65, p250; Subject Term: PLASTICITY; Subject Term: PLASTIC crystals; Subject Term: CRYSTALLINE polymers; Subject Term: SOLID mechanics; Subject Term: ANISOTROPIC crystals; Subject Term: FINITE element method; Subject Term: SMOOTHING (Statistics); Author-Supplied Keyword: B. Constitutive behaviour; Author-Supplied Keyword: B. Crystal plasticity; Author-Supplied Keyword: B. Finite strain; Author-Supplied Keyword: B. Polycrystalline material; Author-Supplied Keyword: Smoothed finite element method; NAICS/Industry Codes: 326198 All other plastic product manufacturing; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.ijplas.2014.09.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115244551&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sajo, Erno AU - Wallace, William AU - Lumley, April AU - Heimbuch, Brian AU - Donahue, Kristian AU - Nielsen, Bruce AU - Owens, Jeffery AU - Wander, Joseph T1 - Capture of aerosolized spores from air streams impinging onto fabrics. JO - Journal of Aerosol Science JF - Journal of Aerosol Science Y1 - 2015/02// VL - 80 M3 - Article SP - 75 EP - 85 SN - 00218502 AB - The zero-volume airlock concept minimizes the volume of air in and transiting through the airlock by effusing air from the clean area through spaces between deformable air bladders. An individual transiting through the airlock into a shelter displaces the bladders and creates ephemeral regions of varying dimensions and air velocities, which affect deposition and reaerosolization of particles. Properties of the aerosols and bladder surfaces are also influences, so the airlock may be treated to shed or retain particles and possibly to promote decontamination of them; the uniform material determines the protection from or exposure to these particles that the wearer experiences. To initiate evolution of a predictive computational model for the deposition and disposition of airborne particles in an airlock, this study presents measurements of deposition rates of Bacillus atrophaeus spores, a common simulant for anthrax spores, on a variety of fabrics as a function of airspeed and angle of incidence at ~22 °C and ~55% RH in a laboratory-scale aerosol tunnel. A computational model using inert surface properties consistently underpredicted experimental results by a factor of 2–10, suggesting that the variation in results across the test panel can be exploited to generate empirical parameters that can be substituted into the model to improve its predictive capability. Factors and possible approaches to computational descriptions are considered. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerosol Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROSOLS (Sprays) KW - BOUNDARY layer (Aerodynamics) KW - FLUID dynamics KW - PARTICLE physics KW - SURFACES (Technology) KW - Aerosol KW - Airlock KW - Boundary layer KW - Deposition KW - Modeling KW - Spores N1 - Accession Number: 100236307; Sajo, Erno 1 Wallace, William 2 Lumley, April 2 Heimbuch, Brian 2 Donahue, Kristian 3 Nielsen, Bruce 4 Owens, Jeffery 5 Wander, Joseph 5; Email Address: joseph.wander@us.af.mil; Affiliation: 1: Department of Physics, University of Massachusetts, Lowell, MA 01854, USA 2: Applied Research Associates Inc., Panama City, FL 32401, USA 3: US Army, RDECOM, Natick, MA 01760, USA 4: Air Force Research Laboratory, Tyndall Air Force Base, FL 32403 5: Air Force Civil Engineer Center, Tyndall Air Force Base, FL 32403, USA; Source Info: Feb2015, Vol. 80, p75; Subject Term: AEROSOLS (Sprays); Subject Term: BOUNDARY layer (Aerodynamics); Subject Term: FLUID dynamics; Subject Term: PARTICLE physics; Subject Term: SURFACES (Technology); Author-Supplied Keyword: Aerosol; Author-Supplied Keyword: Airlock; Author-Supplied Keyword: Boundary layer; Author-Supplied Keyword: Deposition; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Spores; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.jaerosci.2014.10.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100236307&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, David H. AU - Kurish, Brian A. AU - Treufeld, Imre AU - Zhu, Lei AU - Tan, Loon-Seng T1 - Synthesis and characterization of high nitrile content polyimides as dielectric films for electrical energy storage. JO - Journal of Polymer Science Part A: Polymer Chemistry JF - Journal of Polymer Science Part A: Polymer Chemistry Y1 - 2015/02// VL - 53 IS - 3 M3 - Article SP - 422 EP - 436 SN - 0887624X AB - ABSTRACT Three new isomeric diamines containing three, oxy-linked benzonitriles (3BCN), one of which is asymmetric (meta, para, or m, p), are synthesized in a 3-step sequence. Polycondensation of these diamines and four common dianhydrides (6FDA, OPDA, BTDA, and PMDA) in N,N-dimethylacetamide via poly(amic acid) precursors and thermal curing at temperatures up to 300 °C lead to three series of tough, creasable polyimide (PI) films (tensile moduli = 1.63 − 2.86 GPa). Among these PIs, two PMDA-based PIs possess relatively high crystallinity and two OPDA-based PIs, low crystallinity, whereas all 6FDA- and BTDA-based PIs, and m,m-3BCN-OPDA-PI are amorphous, readily soluble in common polar aprotic solvents. Thermally stable and having high Tg (216 − 341 °C), these PIs lose 5% weight around 493-503 °C in air and 463-492 °C in nitrogen. Dielectric properties have been evaluated by broadband dielectric spectroscopy (BDS) and electric displacement-electric-field (D-E) loop measurements. D-E loop results show an increase in high temperature permittivity (at 190 °C/1 kHz) from 2.9 (for parent PI CP2 with no nitrile group) to as high as 4.9 for these PIs, while keeping their dielectric loss relatively low. Thus, an increase in dipole moment density by the presence of three neighboring CN per repeat unit can increase the overall permittivity, which could be further enhanced by sub- Tg mobility of para-phenylene linkages (BDS results). Published 2014. J. Polym. Sci., Part A: Polym. Chem. 2014 J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 422-436 [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Polymer Science Part A: Polymer Chemistry is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIAMINES KW - RESEARCH KW - DIELECTRIC properties KW - ELECTRICAL energy KW - ENERGY storage KW - MONOMERS KW - benzonitrile KW - diamine synthesis KW - dielectric properties KW - differential scanning calorimetry (DSC) KW - FT-IR KW - monomers KW - NMR KW - polyimides KW - sub- Tg transitions KW - synthesis KW - thermogravimetric analysis (TGA) KW - WAXD N1 - Accession Number: 100083185; Wang, David H. 1,2 Kurish, Brian A. 1,2 Treufeld, Imre 3 Zhu, Lei 3 Tan, Loon-Seng 1; Affiliation: 1: Materials and Manufacturing Directorate, Soft Matter Materials Branch (AFRL/RXAS), Air Force Research Laboratory, Wright-Patterson Air Force Base 2: UES, Inc. 4401 Dayton-Xenia Road Dayton 3: Department of Macromolecular Science and Engineering, Case Western Reserve University; Source Info: Feb2015, Vol. 53 Issue 3, p422; Subject Term: DIAMINES; Subject Term: RESEARCH; Subject Term: DIELECTRIC properties; Subject Term: ELECTRICAL energy; Subject Term: ENERGY storage; Subject Term: MONOMERS; Author-Supplied Keyword: benzonitrile; Author-Supplied Keyword: diamine synthesis; Author-Supplied Keyword: dielectric properties; Author-Supplied Keyword: differential scanning calorimetry (DSC); Author-Supplied Keyword: FT-IR; Author-Supplied Keyword: monomers; Author-Supplied Keyword: NMR; Author-Supplied Keyword: polyimides; Author-Supplied Keyword: sub- Tg transitions; Author-Supplied Keyword: synthesis; Author-Supplied Keyword: thermogravimetric analysis (TGA); Author-Supplied Keyword: WAXD; Number of Pages: 16p; Document Type: Article L3 - 10.1002/pola.27445 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100083185&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 103872260 T1 - Individual Differences in Facial Emotion Processing: Trait Emotional Intelligence, Cognitive Ability, or Transient Stress? AU - Matthews, Gerald AU - Pérez-González, Juan-Carlos AU - Fellner, Angela N. AU - Funke, Gregory J. AU - Emo, Amanda K. AU - Zeidner, Moshe AU - Roberts, Richard D. Y1 - 2015/02// N1 - Accession Number: 103872260. Language: English. Entry Date: 20150122. Revision Date: 20150710. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. Instrumentation: Toronto Alexithymia Scale (TAS); Wong and Law Emotional Intelligence Scale (WLEIS); Coping Inventory for Task Situations (CITS); Trait Meta-Mood Scale (TMMS); Mood Awareness Scale (MAS); Trait Emotional Intelligence Qustionnaire (TEIQue); Dundee Stress State Questionnaire (DSSQ); Micro Expression Training Tool (METT). NLM UID: 8405006. KW - Emotional Intelligence KW - Personality KW - Cognition KW - Stress, Psychological KW - Human KW - Students, Undergraduate KW - Emotions KW - Male KW - Female KW - Adolescence KW - Adult KW - Descriptive Statistics KW - Factor Analysis KW - Analysis of Variance KW - Repeated Measures KW - Reaction Time KW - Questionnaires KW - Psychological Tests KW - Personality Tests KW - Scales SP - 68 EP - 82 JO - Journal of Psychoeducational Assessment JF - Journal of Psychoeducational Assessment JA - J PSYCHOEDUC ASSESS VL - 33 IS - 1 CY - Thousand Oaks, California PB - Sage Publications Inc. SN - 0734-2829 AD - University of Central Florida, Orlando, USA AD - Universidad Nacional de Educación a Distancia, Madrid, Spain AD - TriHealth Hatton Research Institute, Cincinnati, OH, USA AD - Air Force Research Laboratory, Dayton, OH, USA AD - Federal Railroad Administration, Washington, DC, USA AD - University of Haifa, Israel AD - Professional Examination Service, New York, NY, USA DO - 10.1177/0734282914550386 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=103872260&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - HEIDLER, JEANNE T. T1 - Andrew Jackson, Southerner. JO - Journal of Southern History JF - Journal of Southern History Y1 - 2015/02// VL - 81 IS - 1 M3 - Book Review SP - 183 EP - 184 PB - Southern Historical Association SN - 00224642 KW - NONFICTION KW - CHEATHEM, Mark R. KW - JACKSON, Andrew, 1767-1845 KW - ANDREW Jackson, Southerner (Book) N1 - Accession Number: 100840839; HEIDLER, JEANNE T. 1; Affiliation: 1: United States Air Force Academy; Source Info: Feb2015, Vol. 81 Issue 1, p183; Subject Term: NONFICTION; Reviews & Products: ANDREW Jackson, Southerner (Book); People: CHEATHEM, Mark R.; People: JACKSON, Andrew, 1767-1845; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100840839&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bernstein, Joshua G. W. AU - Iyer, Nandini AU - Brungart, Douglas S. T1 - Release from informational masking in a monaural competingspeech task with vocoded copies of the maskers presented contralaterally. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2015/02// VL - 137 IS - 2 M3 - Article SP - 702 EP - 713 SN - 00014966 AB - Single-sided deafness prevents access to the binaural cues that help normal-hearing listeners extract target speech from competing voices. Little is known about how listeners with one normal-hearing ear might benefit from access to severely degraded audio signals that preserve only envelope information in the second ear. This study investigated whether vocoded masker-envelope information presented to one ear could improve performance for normal-hearing listeners in a multi-talker speech-identification task presented to the other ear. Target speech and speech or non-speech maskers were presented unprocessed to the left ear. The right ear received no signal, or either an unprocessed or eight-channel noise-vocoded copy of the maskers. Presenting the vocoded maskers contralaterally yielded significant masking release from same-gender speech maskers, albeit less than in the unprocessed case, but not from opposite-gender speech, stationary-noise, or modulated noise maskers. Unmasking also occurred with as few as two vocoder channels and when an attenuated copy of the target signal was added to the maskers before vocoding. These data show that delivering masker-envelope information contralaterally generates masking release in situations where target-masker similarity impedes monaural speech-identification performance. By delivering speech-envelope information to a deaf ear, cochlear implants for single-sided deafness have the potential to produce a similar effect. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEAFNESS -- Research KW - AUDIOLOGY KW - EAR diseases KW - SPEECH KW - LANGUAGE & languages N1 - Accession Number: 101077417; Bernstein, Joshua G. W. 1; Email Address: joshua.g.bernstein.civ@mail.mil Iyer, Nandini 2 Brungart, Douglas S. 1; Affiliation: 1: National Military Audiology and Speech Pathology Center, Walter Reed National Military Medical Center, Bethesda, Maryland 20889 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433; Source Info: Feb2015, Vol. 137 Issue 2, p702; Subject Term: DEAFNESS -- Research; Subject Term: AUDIOLOGY; Subject Term: EAR diseases; Subject Term: SPEECH; Subject Term: LANGUAGE & languages; Number of Pages: 12p; Document Type: Article L3 - 10.1121/1.4906167 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101077417&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wall, Alan T. AU - Gee, Kent L. AU - Neilsen, Tracianne B. T1 - Multisource statistically optimized near-field acoustical holography. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2015/02// VL - 137 IS - 2 M3 - Article SP - 963 EP - 975 SN - 00014966 AB - This paper presents a reduced-order approach to near-field acoustical holography (NAH) that allows the user to account for sound fields generated by multiple spatially separated sources. In this method, an equivalent wave model (EWM) of a given field is formulated to include combinations of planar, cylindrical, spherical, or other elementary wave functions in contrast to an EWM restricted to a single separable coordinate system. This can alleviate the need for higher-order functions, reduce the number of measurements, and decrease error. The statistically optimized near-field acoustical holography (SONAH) algorithm is utilized to perform the NAH projection after the formulation of the multisource EWM. The combined process is called multisource statistically optimized near-field acoustical holography (M-SONAH). This method is used to reconstruct simulated sound fields generated by combinations of a vibrating piston in a sphere and linear arrays of monopole sources. It is shown that M-SONAH can reconstruct near-field pressures in multisource environments with lower errors and fewer measurements than a strictly plane or cylindrical-wave formulation using the same simulated measurement. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACOUSTIC holography KW - RESEARCH KW - ACOUSTIC imaging KW - HOLOGRAPHY KW - INTERFERENCE (Sound) KW - INTERFEROMETRY N1 - Accession Number: 101077440; Wall, Alan T. 1,2; Email Address: alantwall@gmail.com Gee, Kent L. 1 Neilsen, Tracianne B. 1; Affiliation: 1: N243 Eyring Science Center, Brigham Young University, Provo, Utah 84602 2: Air Force Research Laboratory, Battlespace Acoustics Branch, Wright-Patterson AFB, Dayton, OH 45433; Source Info: Feb2015, Vol. 137 Issue 2, p963; Subject Term: ACOUSTIC holography; Subject Term: RESEARCH; Subject Term: ACOUSTIC imaging; Subject Term: HOLOGRAPHY; Subject Term: INTERFERENCE (Sound); Subject Term: INTERFEROMETRY; Number of Pages: 13p; Document Type: Article L3 - 10.1121/1.4906585 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101077440&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Best, Virginia AU - Mason, Christine R. AU - Kidd Jr., Gerald AU - Iyer, Nandini AU - Brungart, Douglas S. T1 - Better-ear glimpsing in hearing-impaired listeners. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2015/02// VL - 137 IS - 2 M3 - Article SP - EL213 EP - EL219 SN - 00014966 AB - When competing speech sounds are spatially separated, listeners can make use of the ear with the better target-to-masker ratio. Recent studies showed that listeners with normal hearing are able to efficiently make use of this "better-ear," even when it alternates between left and right ears at different times in different frequency bands, which may contribute to the ability to listen in spatialized speech mixtures. In the present study, better-ear glimpsing in listeners with bilateral sensorineural hearing impairment, who perform poorly in spatialized speech mixtures, was investigated. The results suggest that this deficit is not related to better-ear glimpsing. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEAF KW - RESEARCH KW - HEARING impaired KW - DEAFNESS KW - LISTENING KW - ATTENTION N1 - Accession Number: 101077464; Best, Virginia 1; Email Address: ginbest@bu.edu Mason, Christine R. 1; Email Address: cmason@bu.edu Kidd Jr., Gerald 1; Email Address: gkidd@bu.edu Iyer, Nandini 2; Email Address: nandini.iyer.2@us.af.mil Brungart, Douglas S. 3; Email Address: Douglas.S.Brungart.civ@health.mil; Affiliation: 1: Department of Speech, Language and Hearing Sciences and Hearing Research Center, Boston University, Boston, Massachusetts 02215 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433 3: Walter Reed National Military Medical Center, Bethesda, Maryland 20889; Source Info: Feb2015, Vol. 137 Issue 2, pEL213; Subject Term: DEAF; Subject Term: RESEARCH; Subject Term: HEARING impaired; Subject Term: DEAFNESS; Subject Term: LISTENING; Subject Term: ATTENTION; Number of Pages: 7p; Document Type: Article L3 - 10.1121/1.4907737 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101077464&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hall, R AU - Gajendran, H AU - Masud, A T1 - Diffusion of chemically reacting fluids through nonlinear elastic solids: mixture model and stabilized methods. JO - Mathematics & Mechanics of Solids JF - Mathematics & Mechanics of Solids Y1 - 2015/02// VL - 20 IS - 2 M3 - Article SP - 204 EP - 227 SN - 10812865 AB - This paper presents a stabilized mixed finite element method for advection-diffusion-reaction phenomena that involve an anisotropic viscous fluid diffusing and chemically reacting with an anisotropic elastic solid. The reactive fluid–solid mixture theory of Hall and Rajagopal (Diffusion of a fluid through an anisotropically chemically reacting thermoelastic body within the context of mixture theory. Math Mech Solid 2012; 17: 131–164) is employed wherein energy and entropy production relations are captured via an equation describing the Lagrange multiplier that results from imposing the constraint of maximum rate of entropy production. The primary partial differential equations are thus reduced to the balance of mass and balance of linear momentum equations for the fluid and the solid, together with an equation for the Lagrange multiplier. Present implementation considers a simplification of the full system of governing equations in the context of isothermal problems, although anisothermal studies are being investigated. The method is applied to problems involving Fickian diffusion, oxidation of PMR-15 polyimide resin, and slurry infiltration, within a one-dimensional finite element context. Results of the oxidation modeling of Tandon et al. (Modeling of oxidative development in PMR-15 resin. Polym Degrad Stab 2006; 91: 1861–1869) are recovered by employing the reaction kinetics model and properties assumed there; the only additional assumed properties are two constants describing coupled chemomechanical and purely chemical dissipation, and standard values for viscosity of air and PMR-15 stiffness properties. The present model provides the individual constituent kinematic and kinetic behaviors, thus adding rich detail to the interpretation of the process in comparison to the original treatment. The last problem considered is slurry infiltration that demonstrates the applicability of the model to account for the imposed mass deposition process and consequent effects on the kinematic and kinetic behaviors of the constituents. [ABSTRACT FROM PUBLISHER] AB - Copyright of Mathematics & Mechanics of Solids is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUIDS KW - RESEARCH KW - FLUID mechanics KW - MECHANICS (Physics) KW - ELASTIC solids KW - ELASTICITY KW - Mixture theory KW - oxidation KW - PMR-15 resin KW - slurry infiltration KW - stabilized method KW - variational multiscale method N1 - Accession Number: 100562956; Hall, R 1 Gajendran, H 2 Masud, A 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, OH, USA 2: Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA; Source Info: Feb2015, Vol. 20 Issue 2, p204; Subject Term: FLUIDS; Subject Term: RESEARCH; Subject Term: FLUID mechanics; Subject Term: MECHANICS (Physics); Subject Term: ELASTIC solids; Subject Term: ELASTICITY; Author-Supplied Keyword: Mixture theory; Author-Supplied Keyword: oxidation; Author-Supplied Keyword: PMR-15 resin; Author-Supplied Keyword: slurry infiltration; Author-Supplied Keyword: stabilized method; Author-Supplied Keyword: variational multiscale method; Number of Pages: 24p; Document Type: Article; Full Text Word Count: 8425 L3 - 10.1177/1081286514544852 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100562956&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hall, Richard B T1 - A mixture-compatible theory of chemothermal deposition and expansion in n-constituent finitely deforming composite materials with initially circularly cylindrical microstructures. JO - Mathematics & Mechanics of Solids JF - Mathematics & Mechanics of Solids Y1 - 2015/02// VL - 20 IS - 2 M3 - Article SP - 228 EP - 248 SN - 10812865 AB - A multiscale approach to growth and recession is adopted that is compatible with the theory of mixtures. The growth may result from chemical reactions or infiltrations, or combinations thereof. The emphasis of the work is on the construction of approximate constituent elastic deformation gradients, associated with an arbitrary overall deformation, that reflect an initially circularly cylindrical geometry relative to which growth occurs. A decomposition of the deformation into cylindrical and non-cylindrical parts is employed. A cylindrically symmetric reference configuration for a given constituent is adopted in which chemical growth, chemothermal (and/or equivalently moisture) expansion, and appearance or disappearance of the constituent may occur; the reference configuration of a constituent thus possesses evolving spatial dimensions but fixed geometric and material symmetries. The traditional composite micromechanics assumption of common radial stress is adopted, in combination with the assumptions of either common axial deformation rate or common axial deformation, for the cylindrical component of deformation. Elastic deformations of constituents are obtained through comparison, of the actual deformation, to the assumed stress-free deposition configurations and subsequent chemothermal stress-free expansions. The requirement that the local and homogenized cylindrical deformations (or rates) match in the axial and outermost radial directions is used to define a homogenized non-cylindrical component that is applied across the local constituents to couple the cylindrical deformation to the overall deformation. The general objective of the study may be stated as incorporating ordered microstructure-based stresses incorporating growth, chemothermal expansion, inhomogeneous natural states, and applied deformations into a mixture theory-compatible framework to provide an important refinement to the assessments of constituent states. The model is intended to enable a new efficiency of multiscale representation in the modeling of composite materials with evolving microstructures, considering both manufacturing processes and environmental influences. [ABSTRACT FROM PUBLISHER] AB - Copyright of Mathematics & Mechanics of Solids is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPOSITE materials -- Research KW - MATERIALS KW - MICROMECHANICS KW - MICROSTRUCTURE KW - MICROPHYSICS KW - chemical KW - composite KW - cylindrical KW - deposition KW - finite deformation KW - growth KW - microstructure KW - Mixture theory KW - recession KW - thermal N1 - Accession Number: 100562957; Hall, Richard B 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Feb2015, Vol. 20 Issue 2, p228; Subject Term: COMPOSITE materials -- Research; Subject Term: MATERIALS; Subject Term: MICROMECHANICS; Subject Term: MICROSTRUCTURE; Subject Term: MICROPHYSICS; Author-Supplied Keyword: chemical; Author-Supplied Keyword: composite; Author-Supplied Keyword: cylindrical; Author-Supplied Keyword: deposition; Author-Supplied Keyword: finite deformation; Author-Supplied Keyword: growth; Author-Supplied Keyword: microstructure; Author-Supplied Keyword: Mixture theory; Author-Supplied Keyword: recession; Author-Supplied Keyword: thermal; Number of Pages: 21p; Document Type: Article; Full Text Word Count: 8504 L3 - 10.1177/1081286514544853 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100562957&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bostani, Maryam AU - Mueller, Jonathon W. AU - McMillan, Kyle AU - Cody, Dianna D. AU - Cagnon, Chris H. AU - DeMarco, John J. AU - McNitt-Gray, Michael F. T1 - Accuracy of Monte Carlo simulations compared to in-vivo MDCT dosimetry. JO - Medical Physics JF - Medical Physics Y1 - 2015/02// VL - 42 IS - 2 M3 - Article SP - 1080 EP - 1086 SN - 00942405 AB - Purpose: The purpose of this study was to assess the accuracy of a Monte Carlo simulation-based method for estimating radiation dose from multidetector computed tomography (MDCT) by comparing simulated doses in ten patients to in-vivo dose measurements. Methods: MD Anderson Cancer Center Institutional Review Board approved the acquisition of in-vivo rectal dose measurements in a pilot study of ten patients undergoing virtual colonoscopy. The dose measurements were obtained by affixing TLD capsules to the inner lumen of rectal catheters. Voxelized patient models were generated from the MDCT images of the ten patients, and the dose to the TLD for all exposures was estimated using Monte Carlo based simulations. The Monte Carlo simulation results were compared to the in-vivo dose measurements to determine accuracy. Results: The calculated mean percent difference between TLD measurements and Monte Carlo simulations was -4.9% with standard deviation of 8.7% and a range of -22.7% to 5.7%. Conclusions: The results of this study demonstrate very good agreement between simulated and measured doses in-vivo. Taken together with previous validation efforts, this work demonstrates that the Monte Carlo simulation methods can provide accurate estimates of radiation dose in patients undergoing CT examinations. [ABSTRACT FROM AUTHOR] AB - Copyright of Medical Physics is the property of American Association of Physicists in Medicine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATION dosimetry KW - MULTIDETECTOR computed tomography KW - COLON (Anatomy) -- Tomography KW - MONTE Carlo method KW - STANDARD deviations KW - dosimetry KW - in vivo KW - MDCT KW - Monte Carlo KW - radiation dose KW - TLD KW - validation KW - VC N1 - Accession Number: 100836693; Bostani, Maryam 1; Email Address: mbostani@mednet.ucla.edu Mueller, Jonathon W. 2 McMillan, Kyle 1 Cody, Dianna D. 3 Cagnon, Chris H. 1 DeMarco, John J. 1 McNitt-Gray, Michael F. 1; Affiliation: 1: Department of Biomedical Physics and Radiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California 90024 2: United States Air Force, Keesler Air Force Base, Biloxi, Mississippi 39534 3: University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030; Source Info: Feb2015, Vol. 42 Issue 2, p1080; Subject Term: RADIATION dosimetry; Subject Term: MULTIDETECTOR computed tomography; Subject Term: COLON (Anatomy) -- Tomography; Subject Term: MONTE Carlo method; Subject Term: STANDARD deviations; Author-Supplied Keyword: dosimetry; Author-Supplied Keyword: in vivo; Author-Supplied Keyword: MDCT; Author-Supplied Keyword: Monte Carlo; Author-Supplied Keyword: radiation dose; Author-Supplied Keyword: TLD; Author-Supplied Keyword: validation; Author-Supplied Keyword: VC; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 7p; Document Type: Article L3 - 10.1118/1.4906178 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100836693&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mark T Gruneisen AU - James P Black AU - Raymond C Dymale AU - Kurt E Stoltenberg T1 - Holography-based quantum projector in a state space of linear photon momentum. JO - New Journal of Physics JF - New Journal of Physics Y1 - 2015/02// VL - 17 IS - 2 M3 - Article SP - 1 EP - 1 SN - 13672630 AB - A transmission volume hologram is evaluated as a quantum projector operating on linear momentum states of individual photons in a four-dimensional state space. A state space is defined by four momentum vectors that are either efficiently diffracted or transmitted by the hologram. The influence of the volume hologram on the complex amplitudes of the basis states is modeled using coupled-wave theory. Measurement probabilities obtained with a second hologram introduced as a state-space analyzer are compared to measurement probabilities associated with a projection operator in quantum mechanics. A compact sequential hologram configuration for projecting superposition states onto all of the basis states is demonstrated for individual photons prepared in all 20 states of the five mutually unbiased bases of the four-dimensional state space. The complex amplitudes associated with superpositions of the basis states are imparted to individual photons via computer-generated holography and a liquid-crystal spatial light modulator. The coupled-wave theory analysis indicates that relative phase relationships in transmitted superposition states can be preserved to within 1/28th of an optical cycle and measured detection probabilities compare favorably to those associated with a quantum projector in a basis of discrete orthonormal states. Small departures of the measured statistics from theoretical expectations are quantified and attributed to imperfections in the hologram and experimental setup. [ABSTRACT FROM AUTHOR] AB - Copyright of New Journal of Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER-generated holography KW - QUANTUM information science KW - QUANTUM mechanics KW - PHOTONS KW - EIGENFUNCTIONS KW - BRAGG'S law (Physics) N1 - Accession Number: 101147780; Mark T Gruneisen 1 James P Black 2 Raymond C Dymale 2 Kurt E Stoltenberg 2; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, NM 87117, USA 2: The Boeing Company, PO Box 5670, Albuquerque NM 87185, USA; Source Info: Feb2015, Vol. 17 Issue 2, p1; Subject Term: COMPUTER-generated holography; Subject Term: QUANTUM information science; Subject Term: QUANTUM mechanics; Subject Term: PHOTONS; Subject Term: EIGENFUNCTIONS; Subject Term: BRAGG'S law (Physics); Number of Pages: 1p; Document Type: Article L3 - 10.1088/1367-2630/17/2/023059 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101147780&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Orban, Chris AU - Morrison, John T. AU - Chowdhury, Enam A. AU - Nees, John A. AU - Frische, Kyle AU - Feister, Scott AU - Roquemore, W. M. T1 - Backward-propagating MeV electrons in ultra-intense laser interactions: Standing wave acceleration and coupling to the reflected laser pulse. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2015/02// VL - 22 IS - 2 M3 - Article SP - 1 EP - 16 PB - American Institute of Physics SN - 1070664X AB - Laser-accelerated electron beams have been created at a kHz repetition rate from the reflection of intense (~1018W/cm²), ~40 fs laser pulses focused on a continuous water-jet in an experiment at the Air Force Research Laboratory. This paper investigates Particle-in-Cell simulations of the laser-target interaction to identify the physical mechanisms of electron acceleration in this experiment. We find that the standing-wave pattern created by the overlap of the incident and reflected laser is particularly important because this standing wave can "inject" electrons into the reflected laser pulse where the electrons are further accelerated. We identify two regimes of standing wave acceleration: a highly relativistic case (a0 ≥ 1), and a moderately relativistic case (a0 ~ 0.5) which operates over a larger fraction of the laser period. In previous studies, other groups have investigated the highly relativistic case for its usefulness in launching electrons in the forward direction. We extend this by investigating electron acceleration in the specular (back reflection) direction and over a wide range of intensities (1017-1019W cm-2). [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STANDING waves KW - LASER pulses KW - ELECTRON beams KW - ELECTRON accelerators KW - RELATIVISTIC astrophysics N1 - Accession Number: 101336968; Orban, Chris 1,2; Email Address: orban@physics.osu.edu Morrison, John T. 3,4 Chowdhury, Enam A. 1,5 Nees, John A. 2,4 Frische, Kyle 2 Feister, Scott 1,2 Roquemore, W. M. 6; Affiliation: 1: Department of Physics, Ohio State University, Columbus, Ohio 43210, USA 2: Innovative Scientific Solutions, Inc., Dayton, Ohio 45459, USA 3: National Research Council, Washington, DC 20001, USA 4: Intense Energy Solutions, LLC, Plain City, Ohio 43064, USA 5: Center for Ultra-Fast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA 6: Air Force Research Laboratory, Dayton, Ohio 45433, USA; Source Info: 2015, Vol. 22 Issue 2, p1; Subject Term: STANDING waves; Subject Term: LASER pulses; Subject Term: ELECTRON beams; Subject Term: ELECTRON accelerators; Subject Term: RELATIVISTIC astrophysics; Number of Pages: 16p; Illustrations: 3 Diagrams, 1 Chart, 10 Graphs; Document Type: Article L3 - 10.1063/1.4913225 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101336968&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2015-01446-006 AN - 2015-01446-006 AU - Matthews, Gerald AU - Pérez-González, Juan-Carlos AU - Fellner, Angela N. AU - Funke, Gregory J. AU - Emo, Amanda K. AU - Zeidner, Moshe AU - Roberts, Richard D. T1 - Individual differences in facial emotion processing: Trait emotional intelligence, cognitive ability, or transient stress? JF - Journal of Psychoeducational Assessment JO - Journal of Psychoeducational Assessment JA - J Psychoeduc Assess Y1 - 2015/02// VL - 33 IS - 1 SP - 68 EP - 82 CY - US PB - Sage Publications SN - 0734-2829 SN - 1557-5144 AD - Matthews, Gerald, Institute of Simulation and Training, University of Central Florida, 3100 Technology Parkway, Orlando, FL, US, 32826 N1 - Accession Number: 2015-01446-006. Partial author list: First Author & Affiliation: Matthews, Gerald; University of Central Florida, Orlando, FL, US. Other Publishers: Clinical Psychology Publishing Co.; Grune & Stratton, Inc.; Psychoeducational Corp. Release Date: 20150223. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Emotional Intelligence; Facial Expressions; Personality Traits. Minor Descriptor: Attention; Cognitive Ability; Emotions; Individual Differences; Stress. Classification: Personality Traits & Processes (3120); Motivation & Emotion (2360). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: Mood Awareness Scale; Mini Markers Measure; Coping Inventory for Task Situations; Micro Expression Training Tool; Dundee Stress State Questionnaire DOI: 10.1037/t27031-000; Trait Meta-Mood Scale DOI: 10.1037/t01392-000; Twenty-item Toronto Alexithymia Scale DOI: 10.1037/t01318-000; Trait Emotional Intelligence Questionnaire DOI: 10.1037/t04889-000; Wong and Law Emotional Intelligence Scale DOI: 10.1037/t07398-000. Methodology: Empirical Study; Quantitative Study. Page Count: 15. Issue Publication Date: Feb, 2015. Copyright Statement: SAGE Publications. 2014. AB - This study tested whether trait emotional intelligence (TEI) measures of narrow bandwidth predict perception of facial emotion, using two tasks: identification of microexpressions of emotion and controlled visual search for target emotions. A total of 129 undergraduates completed multiple scales for TEI, as well as cognitive ability, personality, and stress measures. TEI was associated with a reduced stress response, but failed to predict performance on either task, contrary to the initial hypothesis. However, performance related significantly to higher cognitive intelligence, subjective task engagement, and use of task-focused coping. Individual differences in attentional resources may support processing of both emotive and non-emotive stimuli. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - trait emotional intelligence KW - emotion perception KW - facial emotion KW - microexpressions KW - attention KW - task engagement KW - stress KW - 2015 KW - Emotional Intelligence KW - Facial Expressions KW - Personality Traits KW - Attention KW - Cognitive Ability KW - Emotions KW - Individual Differences KW - Stress KW - 2015 DO - 10.1177/0734282914550386 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-01446-006&site=ehost-live&scope=site UR - gmatthews@ist.ucf.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2014-48739-001 AN - 2014-48739-001 AU - Boedigheimer, Ralph AU - Ghrist, Michelle AU - Peterson, Dale AU - Kallemyn, Benjamin T1 - Individual oral exams in mathematics courses: 10 years of experience at the Air Force Academy. JF - PRIMUS: Problems, Resources, and Issues in Mathematics Undergraduate Studies JO - PRIMUS: Problems, Resources, and Issues in Mathematics Undergraduate Studies Y1 - 2015/02// VL - 25 IS - 2 SP - 99 EP - 120 CY - United Kingdom PB - Taylor & Francis SN - 1051-1970 SN - 1935-4053 AD - Ghrist, Michelle, Department of Mathematical Sciences, United States Air Force Academy (USAF Academy), 2354 Fairchild Dr., CO, US, 80840 N1 - Accession Number: 2014-48739-001. Partial author list: First Author & Affiliation: Boedigheimer, Ralph; University of Toledo, Toledo, OH, US. Release Date: 20150112. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Curriculum; Educational Measurement; Mathematics. Minor Descriptor: Educational Personnel. Classification: Educational Psychology (3500); Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 22. Issue Publication Date: Feb, 2015. AB - Over the last 10 years faculty members in the Department of Mathematical Sciences at the United States Air Force Academy have incorporated individual oral exams into mathematics courses. We have experimented with various approaches, shared results and ideas with other department members, and refined our techniques. We have found that this alternative assessment gives the instructor considerable insight into students’ understanding, and, in general, students value the opportunity to demonstrate their abilities via this kind of assessment. In this paper, we provide suggestions on successfully administering oral exams and offer evidence supporting their use in mathematics courses. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Oral exams KW - assessment KW - oral communication KW - alternative forms of assessment KW - 2015 KW - Air Force Personnel KW - Curriculum KW - Educational Measurement KW - Mathematics KW - Educational Personnel KW - 2015 DO - 10.1080/10511970.2014.906008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-48739-001&site=ehost-live&scope=site UR - michelle.ghrist@usafa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-09610-015 AN - 2015-09610-015 AU - Shia, Regina M. AU - Hagen, Josh A. AU - McIntire, Lindsey K. AU - Goodyear, Chuck D. AU - Dykstra, Leanne N. AU - Narayanan, Latha T1 - Individual differences in biophysiological toughness: Sustaining working memory during physical exhaustion. JF - Military Medicine JO - Military Medicine JA - Mil Med Y1 - 2015/02// VL - 180 IS - 2 SP - 230 EP - 236 CY - US PB - Assn of Military Surgeons of the US SN - 0026-4075 SN - 1930-613X AD - Shia, Regina M., Warfighter Interface Division, Air Force Research Laboratory, Wright Patterson AFB, OH, US, 45433 N1 - Accession Number: 2015-09610-015. PMID: 25643392 Partial author list: First Author & Affiliation: Shia, Regina M.; Warfighter Interface Division, Air Force Research Laboratory, Wright Patterson AFB, OH, US. Release Date: 20150427. Correction Date: 20170302. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Individual Differences; Military Personnel; Short Term Memory. Minor Descriptor: Fatigue; Stress. Classification: Military Psychology (3800). Population: Human (10); Male (30). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Tests & Measures: Working Memory Test; Psychomotor Vigilance Task; Maximal Treadmill Test; Spatial Orientation Task; Continuous Memory Test; Visual Analogue Scale. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 7. Issue Publication Date: Feb, 2015. Copyright Statement: All rights reserved. Association of Military Surgeons of the U.S. AB - Recent evidence suggests that increased dehydroepiandrosterone sulfate (DHEAS), in combination with decreased cortisol levels have been correlated with enhanced performance outcomes in stressful military environments. This study was implemented to replicate these findings in a group of active duty Air Force members to provide information on the usefulness of these biomarkers indices in the training and operational environment. Seventeen active duty males participated in the 4 sessions of this study. Sessions 1 and 2 were training days for the cognitive testing. Session 3 was a baseline measure of physical fitness, utilizing the VO₂ Maximal Treadmill test. Session 4 was centered around a modified-Astrand treadmill protocol designed to induce physical exhaustion. Blood draws for biomarker analysis, cognitive testing (NovaScan), psychomotor vigilance, and physiological measures were collected before, during, and following the treadmill protocol. Results showed that prolonged increases in cortisol negatively correlate with working memory performance. DHEAS release from baseline to poststress was negatively related to the changes in cortisol for 20 minutes following stress. These results indicate that the ratio of DHEAS to cortisol buffers, the effect of cortisol increases that are related to poor working memory performance because of physical exhaustion. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - physical exhaustion KW - working memory KW - individual differences KW - biophysical toughness KW - 2015 KW - Individual Differences KW - Military Personnel KW - Short Term Memory KW - Fatigue KW - Stress KW - 2015 U1 - Sponsor: Air Force Research Laboratory, "Venture Fund" Program. Recipients: No recipient indicated DO - 10.7205/MILMED-D-14-00363 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-09610-015&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Attal, N. AU - Ramaprabhu, P. AU - Hossain, J. AU - Karkhanis, V. AU - Uddin, M. AU - Gord, J.R. AU - Roy, S. T1 - Development and validation of a chemical reaction solver coupled to the FLASH code for combustion applications. JO - Computers & Fluids JF - Computers & Fluids Y1 - 2015/01/31/ VL - 107 M3 - Article SP - 59 EP - 76 SN - 00457930 AB - We report on modifications to the widely used astrophysical code, FLASH (Fryxell, Olson et al., 2000) that enable accurate simulations of chemically reacting flows with heat addition. The enhancements to FLASH include the implementation of extensive hydrogen–air and methane–air chemistry through multiple, detailed mechanisms (Smooke, 1991; Katta and Roquemore, 1995; Mueller, Kim et al., 1999; Billet, 2005), accomplished by building on the existing infrastructure of nuclear reaction network solvers. The chemical reaction network is represented as a system of coupled ODEs, that are then solved either through the Kaps–Rentrop (Rosenbrok) method (Kaps and Rentrop, 1979) or the Bader–Deuflhard method (Bader and Deuflhard, 1983), supplemented by a sparse matrix package for solving linear systems of equations. Furthermore, an existing gamma-law equation of state solver was modified to describe multiple species, each with temperature-dependent properties necessary for realistic simulations of combustion applications. The calculation of temperature-dependent transport properties of constituent species is accomplished through a comprehensive expansion of the materials database. We take advantage of the capability in FLASH to handle the diffusion of heat, mass, and momentum either through an update of the fluxes of each quantity across cell faces, or by directly solving a diffusion equation for each, and the relative merits of each approach for reacting flows are discussed. The capabilities of the modified tool are extensive and in some instances unique, and are documented in detail, along with numerical properties. We also present results from validation of the above capabilities through comparison with analytical solutions, and published numerical and experimental data of chemically reacting flows. Our validation cases include comparison of temporal evolution of species and temperature in a well stirred reactor, comparison of adiabatic flame temperature data, advection of reacting and non-reacting 1D fronts, 2D laminar premixed methane–air flame in a Bunsen burner configuration, shock-driven combustion of an initially circular hydrogen bubble, and a reacting Richtmyer–Meshkov instability not studied previously. [ABSTRACT FROM AUTHOR] AB - Copyright of Computers & Fluids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL reactions KW - COMBUSTION KW - COMPUTER simulation KW - METHANE KW - LAMINAR flow KW - RICHTMYER-Meshkov instability KW - Code development and validation KW - Implicit Large Eddy Simulations KW - Laminar flame KW - Reacting Richtmyer–Meshkov instability KW - Shock-flame interaction N1 - Accession Number: 100134602; Attal, N. 1 Ramaprabhu, P. 1; Email Address: pramapra@uncc.edu Hossain, J. 2 Karkhanis, V. 1 Uddin, M. 1 Gord, J.R. 3 Roy, S. 4; Affiliation: 1: Department of Mechanical Engineering and Engineering Sciences, University of North Carolina at Charlotte, NC 28223-0001, USA 2: Department of Mechanical and Aerospace Engineering, University of Central Florida, Orlando, FL 32816, USA 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 4: Spectral Energies LLC, 5100 Springfield Street, Suite 301, Dayton, OH 45431, USA; Source Info: Jan2015, Vol. 107, p59; Subject Term: CHEMICAL reactions; Subject Term: COMBUSTION; Subject Term: COMPUTER simulation; Subject Term: METHANE; Subject Term: LAMINAR flow; Subject Term: RICHTMYER-Meshkov instability; Author-Supplied Keyword: Code development and validation; Author-Supplied Keyword: Implicit Large Eddy Simulations; Author-Supplied Keyword: Laminar flame; Author-Supplied Keyword: Reacting Richtmyer–Meshkov instability; Author-Supplied Keyword: Shock-flame interaction; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 18p; Document Type: Article L3 - 10.1016/j.compfluid.2014.09.051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100134602&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Duan, Xiaofeng F. AU - Burggraf, Larry W. T1 - Theoretical investigation of stabilities and optical properties of Si12C12 clusters. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2015/01/21/ VL - 142 IS - 3 M3 - Article SP - 1 EP - 10 PB - American Institute of Physics SN - 00219606 AB - By sorting through hundreds of globally stable Si12C12 isomers using a potential surface search and using simulated annealing, we have identified low-energy structures. Unlike isomers knit together by Si-C bonds, the lowest energy isomers have segregated carbon and silicon regions that maximize stronger C-C bonding. Positing that charge separation between the carbon and silicon regions would produce interesting optical absorption in these cluster molecules, we used time-dependent density functional theory to compare the calculated optical properties of four isomers representing structural classes having different types of silicon and carbon segregation regions. Absorptions involving charge transfer between segregated carbon and silicon regions produce lower excitation energies than do structures having alternating Si-C bonding for which frontier orbital charge transfer is exclusively from separated carbon atoms to silicon atoms. The most stable Si12C12 isomer at temperatures below 1100 K is unique as regards its high symmetry and large optical oscillator strength in the visible blue. Its high-energy and low-energy visible transitions (1.15 eV and 2.56 eV) are nearly pure one-electron silicon-to-carbon transitions, while an intermediate energy transition (1.28 eV) is a nearly pure carbon-to-silicon one-electron charge transfer. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON carbide -- Optical properties KW - CARBON-carbon bonds KW - CLUSTERING of particles KW - ISOMERS KW - CHARGE transfer KW - STABILITY theory N1 - Accession Number: 100645013; Duan, Xiaofeng F. 1,2 Burggraf, Larry W. 2; Email Address: larry.burggraf@us.af.mil; Affiliation: 1: Air Force Research Laboratory DoD Supercomputer Resource Center, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: 2015, Vol. 142 Issue 3, p1; Subject Term: SILICON carbide -- Optical properties; Subject Term: CARBON-carbon bonds; Subject Term: CLUSTERING of particles; Subject Term: ISOMERS; Subject Term: CHARGE transfer; Subject Term: STABILITY theory; Number of Pages: 10p; Illustrations: 1 Diagram, 5 Charts, 9 Graphs; Document Type: Article L3 - 10.1063/1.4905542 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100645013&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2015-09186-008 AN - 2015-09186-008 AU - Wisniewski, Matthew G. AU - Thompson, Eric R. AU - Iyer, Nandini AU - Estepp, Justin R. AU - Goder-Reiser, Max N. AU - Sullivan, Sarah C. T1 - Frontal midline θ power as an index of listening effort. JF - NeuroReport: For Rapid Communication of Neuroscience Research JO - NeuroReport: For Rapid Communication of Neuroscience Research JA - Neuroreport Y1 - 2015/01/21/ VL - 26 IS - 2 SP - 94 EP - 99 CY - US PB - Lippincott Williams & Wilkins SN - 0959-4965 SN - 1473-558X AD - Wisniewski, Matthew G., Air Force Research Laboratory, Building 441, Area B, 711th Human Performance Wing, Wright-Patterson Air Force Base, OH, US, 45433 N1 - Accession Number: 2015-09186-008. PMID: 25536119 Other Journal Title: Neuroreport: An International Journal for the Rapid Communication of Research in Neuroscience. Partial author list: First Author & Affiliation: Wisniewski, Matthew G.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Release Date: 20150330. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Auditory Evoked Potentials; Auditory Perception; Physiological Correlates; Cingulate Cortex. Minor Descriptor: Theta Rhythm. Classification: Physiological Psychology & Neuroscience (2500). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. Supplemental Data: Video Internet. References Available: Y. Page Count: 6. Issue Publication Date: Jan 21, 2015. Publication History: Accepted Date: Nov 27, 2014; First Submitted Date: Nov 3, 2014. Copyright Statement: All rights reserved. Wolters Kluwer Health, Inc. 2015. AB - Attempts to identify physiological correlates of listening effort have mainly focused on peripheral measures (e.g. pupillometry) and auditory-evoked/event-related potentials. Although nonauditory studies have suggested that sustained time–frequency electroencephalographic (EEG) features in the θ-band (4–7 Hz) are correlated with domain-general mental effort, little work has characterized such features during effortful listening. Here, high-density EEG data was collected while listeners performed a sentence-recognition task in noise, the signal-to-noise ratio (SNR) of which varied across blocks. Frontal midline θ (Fmθ), largely driven by sources localized in or near the medial frontal cortex, showed greater power with decreasing SNR and was positively correlated with self-reports of effort. Increased Fmθ was present before speech onset and during speech presentation. Fmθ power also differed across SNRs when including only trials in which all words were recognized, suggesting that the effects were unrelated to performance differences. Results suggest that frontal cortical networks play a larger role in listening as acoustic signals are increasingly masked. Further, sustained time–frequency EEG features may usefully supplement previously used peripheral and event-related potential measures in psychophysiological investigations of effortful listening. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - anterior cingulate cortex KW - audiological rehabilitation KW - auditory KW - event-related spectral perturbation KW - independent components analysis KW - 2015 KW - Auditory Evoked Potentials KW - Auditory Perception KW - Physiological Correlates KW - Cingulate Cortex KW - Theta Rhythm KW - 2015 U1 - Sponsor: US Air Force Research Laboratory, Student Research Participant Program, US. Other Details: Oak Ridge Institute for Science and Education. Recipients: No recipient indicated DO - 10.1097/WNR.0000000000000306 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-09186-008&site=ehost-live&scope=site UR - matt.g.wisniewski@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Zhou, Ziyao AU - Brown, Gail J. AU - Nan, Tianxiang AU - Liu, Ming AU - Mahalingam, Krishnamurthy AU - Chen, Xing AU - Howe, Brandon M. AU - Sun, Nian X. T1 - Interfacial charge-mediated non-volatile magnetoelectric coupling in Co0.3Fe0.7/Ba0.6Sr0.4TiO3/Nb:SrTiO3 multiferroic heterostructures. JO - Scientific Reports JF - Scientific Reports Y1 - 2015/01/16/ M3 - Article SP - 7740 SN - 20452322 AB - The central challenge in realizing non-volatile, E-field manipulation of magnetism lies in finding an energy efficient means to switch between the distinct magnetic states in a stable and reversible manner. In this work, we demonstrate using electrical polarization-induced charge screening to change the ground state of magnetic ordering in order to non-volatilely tune magnetic properties in ultra-thin Co0.3Fe0.7/Ba0.6Sr0.4TiO3/Nb:SrTiO3 (001) multiferroic heterostructures. A robust, voltage-induced, non-volatile manipulation of out-of-plane magnetic anisotropy up to 40 Oe is demonstrated and confirmed by ferromagnetic resonance measurements. This discovery provides a framework for realizing charge-sensitive order parameter tuning in ultra-thin multiferroic heterostructures, demonstrating great potential for delivering compact, lightweight, reconfigurable, and energy-efficient electronic devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Scientific Reports is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETOELECTRIC effect KW - MULTIFERROIC materials KW - HETEROSTRUCTURES KW - ELECTRIC fields KW - ANISOTROPY KW - FERROMAGNETIC resonance KW - MAGNETISM N1 - Accession Number: 100521686; Zhou, Ziyao 1 Brown, Gail J. 2 Nan, Tianxiang 3 Liu, Ming 2 Mahalingam, Krishnamurthy 2 Chen, Xing 4 Howe, Brandon M. 2 Sun, Nian X. 3; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 45433-7707 2: Energy Systems Division, Argonne National Laboratory, Lemont, IL, USA, 60439 3: 1] Department of Electrical and Computer Engineering, Northeastern University, Boston, MA, USA, 02115 [2] Energy Systems Division, Argonne National Laboratory, Lemont, IL, USA, 60439 4: Department of Electrical and Computer Engineering, Northeastern University, Boston, MA, USA, 02115; Source Info: 1/16/2015, p7740; Subject Term: MAGNETOELECTRIC effect; Subject Term: MULTIFERROIC materials; Subject Term: HETEROSTRUCTURES; Subject Term: ELECTRIC fields; Subject Term: ANISOTROPY; Subject Term: FERROMAGNETIC resonance; Subject Term: MAGNETISM; Number of Pages: 1p; Document Type: Article L3 - 10.1038/srep07740 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100521686&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lin, Hwaider AU - Lou, Jing AU - Gao, Yuan AU - Hasegawa, Ryusuke AU - Liu, Ming AU - Howe, Brandon AU - Jones, John AU - Brown, Gail AU - Sun, Nian X. T1 - Voltage Tunable Magnetoelectric Inductors With Improved Operational Frequency and Quality Factor for Power Electronics. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2015/01/15/Jan2015 Part 2 VL - 51 IS - 1 M3 - Article SP - 1 EP - 5 SN - 00189464 AB - Inductors find widespread use in various applications. Inductors with a large tunability of inductance and quality factor would lead to new paradigm on circuit designs. In this paper, we investigated the effect of ferromagnetic layer thickness on the performance of a magnetoelectric tunable inductor. Using chemical etching, the thickness of Metglas ribbons (2605SA1) can be reduced from 24 to about 8 \mu m, which dramatically reduces the eddy-current loss at higher frequencies. With the same total thickness, compared with inductor constructed with unthinned Metglas layers (2605CO), the maximum quality factor can be increased for 80%, and the operational frequency range can be extended for 10\times to the >10 MHz range. An inductance tunable range of L \mathrm {max} / L\mathrm {min}= 370{\%} was also achieved together with a significantly enhanced quality factor by $\sim 3.$ Furthermore, with an inductor constructed with single thin Metglas (2605HB1M) layer, the maximum quality factor can be increased by 150% with single PZT slab and by 235% with double PZT slabs, and the operational frequency range can be extended by $100\times $ with single slab and by $200\times $ with double slabs, which makes these metallic magnetic ribbons tunable inductors competitive with ferrite materials in adaptive inductive power supply systems. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC potential KW - MAGNETOELECTRIC effect KW - ELECTRIC inductors KW - QUALITY factor KW - POWER electronics KW - ELECTRIC circuits -- Design & construction KW - Amorphous magnetic materials KW - Electric fields KW - Inductance KW - Inductors KW - Magnetoelectric effects KW - Q-factor KW - Slabs N1 - Accession Number: 100871699; Lin, Hwaider 1 Lou, Jing 1 Gao, Yuan 1 Hasegawa, Ryusuke 2 Liu, Ming 3 Howe, Brandon 3 Jones, John 3 Brown, Gail 3 Sun, Nian X. 1; Affiliation: 1: Department of Electrical and Computer Engineering, Northeastern University, Boston, MA, USA 2: , Metglas Inc., Conway, SC, USA 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Source Info: Jan2015 Part 2, Vol. 51 Issue 1, p1; Subject Term: ELECTRIC potential; Subject Term: MAGNETOELECTRIC effect; Subject Term: ELECTRIC inductors; Subject Term: QUALITY factor; Subject Term: POWER electronics; Subject Term: ELECTRIC circuits -- Design & construction; Author-Supplied Keyword: Amorphous magnetic materials; Author-Supplied Keyword: Electric fields; Author-Supplied Keyword: Inductance; Author-Supplied Keyword: Inductors; Author-Supplied Keyword: Magnetoelectric effects; Author-Supplied Keyword: Q-factor; Author-Supplied Keyword: Slabs; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TMAG.2014.2326619 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100871699&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiao, C.Q. AU - Adams, S.F. T1 - Electron ionization of 1,3-cyclohexadiene and 1,4-cyclohexadiene. JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2015/01/15/ VL - 376 M3 - Article SP - 35 EP - 38 SN - 13873806 AB - Electron ionization of the two cyclohexadiene isomers has been found to produce similar ion populations with comparable total cross sections. The total cross sections for 1,3-cyclohexadiene and 1,4-cyclohexadiene were measured to be at maxima of 1.42 × 10 −15 and 1.41 × 10 −15 cm 2 , respectively, at 80 eV. Results show that the major product ions are the four largest ions, C 6 H 5–8 + , with combined intensities contributing more than three quarters of the ion populations. Minor product ions include C 5 H 3,5 + , C 4 H 2–6 + , C 3 H 2,3,5 + and C 2 H 3 + . The branching ratios for the major product ions from the two isomers match each other well at low energies near thresholds but differ slightly at elevated energies; while the branching ratios for the minor ions are approximately identical between the two isomers within error limits. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON impact ionization KW - CYCLOHEXADIENE KW - ISOMERS KW - CROSS sections (Nuclear physics) KW - DAUGHTER ions KW - APPROXIMATION theory KW - 1,3-Cyclohexadiene KW - 1,4-Cyclohexadiene KW - Cross sections KW - Electron ionization KW - Major fragment ions KW - Thresholds N1 - Accession Number: 100538646; Jiao, C.Q. 1 Adams, S.F. 2; Email Address: steven.adams.11@us.af.mil; Affiliation: 1: UES, Inc., Dayton, OH 45432-1894, United States 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7251, United States; Source Info: Jan2015, Vol. 376, p35; Subject Term: ELECTRON impact ionization; Subject Term: CYCLOHEXADIENE; Subject Term: ISOMERS; Subject Term: CROSS sections (Nuclear physics); Subject Term: DAUGHTER ions; Subject Term: APPROXIMATION theory; Author-Supplied Keyword: 1,3-Cyclohexadiene; Author-Supplied Keyword: 1,4-Cyclohexadiene; Author-Supplied Keyword: Cross sections; Author-Supplied Keyword: Electron ionization; Author-Supplied Keyword: Major fragment ions; Author-Supplied Keyword: Thresholds; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.ijms.2014.11.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100538646&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Sukesh AU - Jia-Chen Hua AU - Barnhill, Will AU - Gunaratne, Gemunu H. AU - Gord, James R. T1 - Deconvolution of reacting-flow dynamics using proper orthogonal and dynamic mode decompositions. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2015/01/15/ VL - 91 IS - 1-B M3 - Article SP - 1 EP - 16 SN - 15393755 AB - Analytical and computational studies of reacting flows are extremely challenging due in part to nonlinearities of the underlying system of equations and long-range coupling mediated by heat and pressure fluctuations. However, many dynamical features of the flow can be inferred through low-order models if the flow constituents (e.g., eddies or vortices) and their symmetries, as well as the interactions among constituents, are established. Modal decompositions of high-frequency, high-resolution imaging, such as measurements of species-concentration fields through planar laser-induced florescence and of velocity fields through particle-image velocimetry, are the first step in the process. A methodology is introduced for deducing the flow constituents and their dynamics following modal decomposition. Proper orthogonal (POD) and dynamic mode (DMD) decompositions of two classes of problems are performed and their strengths compared. The first problem involves a cellular state generated in a flat circular flame front through symmetry breaking. The state contains two rings of cells that rotate clockwise at different rates. Both POD and DMD can be used to deconvolve the state into the two rings. In POD the contribution of each mode to the flow is quantified using the energy. Each DMD mode can be associated with an energy as well as a unique complex growth rate. Dynamic modes with the same spatial symmetry but different growth rates are found to be combined into a single POD mode. Thus, a flow can be approximated by a smaller number of POD modes. On the other hand, DMD provides a more detailed resolution of the dynamics. Two classes of reacting flows behind symmetric bluff bodies are also analyzed. In the first, symmetric pairs of vortices are released periodically from the two ends of the bluff body. The second flow contains von Karman vortices also, with a vortex being shed from one end of the bluff body followed by a second shedding from the opposite end. The way in which DMD can be used to deconvolve the second flow into symmetric and von Karman vortices is demonstrated. The analyses performed illustrate two distinct advantages of DMD: (1) Unlike proper orthogonal modes, each dynamic mode is associated with a unique complex growth rate. By comparing DMD spectra from multiple nominally identical experiments, it is possible to identify "reproducible" modes in a flow. We also find that although most high-energy modes are reproducible, some are not common between experimental realizations; in the examples considered, energy fails to differentiate between reproducible and nonreproducible modes. Consequently, it may not be possible to differentiate reproducible and nonreproducible modes in POD. (2) Time-dependent coefficients of dynamic modes are complex. Even in noisy experimental data, the dynamics of the phase of these coefficients (but not their magnitude) are highly regular. The phase represents the angular position of a rotating ring of cells and quantifies the downstream displacement of vortices in reacting flows. Thus, it is suggested that the dynamical characterizations of complex flows are best made through the phase dynamics of reproducible DMD modes. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DECONVOLUTION (Mathematics) KW - ORTHOGONAL decompositions KW - DYNAMICAL systems KW - NONLINEAR theories KW - EDDIES KW - FLUID dynamics N1 - Accession Number: 101201700; Roy, Sukesh 1; Email Address: sroy@woh.rr.com Jia-Chen Hua 2 Barnhill, Will 2 Gunaratne, Gemunu H. 2 Gord, James R. 3; Affiliation: 1: Spectral Energies, LLC, Dayton, Ohio 45431, USA 2: Department of Physics, University of Houston, Houston, Texas 77204, USA 3: Aerospace Systems Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433, USA; Source Info: Jan2015, Vol. 91 Issue 1-B, p1; Subject Term: DECONVOLUTION (Mathematics); Subject Term: ORTHOGONAL decompositions; Subject Term: DYNAMICAL systems; Subject Term: NONLINEAR theories; Subject Term: EDDIES; Subject Term: FLUID dynamics; Number of Pages: 16p; Document Type: Article L3 - 10.1103/PhysRevE.91.013001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101201700&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Emori, Satoru AU - Nan, Tianxiang AU - Oxholm, Trevor M. AU - Boone, Carl T. AU - Jones, John G. AU - Howe, Brandon M. AU - Brown, Gail J. AU - Budil, David E. AU - Sun, Nian X. T1 - Quantification of the spin-Hall anti-damping torque with a resonance spectrometer. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2015/01/12/ VL - 106 IS - 2 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00036951 AB - We present a simple technique using a cavity-based resonance spectrometer to quantify the anti-damping torque due to the spin Hall effect. Modification of ferromagnetic resonance is observed as a function of small DC current in sub-mm-wide strips of bilayers, consisting of magnetically soft FeGaB and strong spin-Hall metal Ta. From the detected current-induced linewidth change, we obtain an effective spin Hall angle of 0.08-0.09 independent of the magnetic layer thickness. Our results demonstrate that a sensitive resonance spectrometer can be a general tool to investigate spin Hall effects in various material systems, even those with vanishingly low conductivity and magnetoresistance. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPIN transfer torque KW - RESEARCH KW - DAMPING (Mechanics) KW - SPIN Hall effect KW - SPECTROMETERS KW - FERROMAGNETIC resonance KW - BILAYERS (Solid state physics) N1 - Accession Number: 100571972; Emori, Satoru 1; Email Address: s.emori@neu.edu Nan, Tianxiang 1 Oxholm, Trevor M. 1 Boone, Carl T. 1 Jones, John G. 2 Howe, Brandon M. 2 Brown, Gail J. 2 Budil, David E. 3 Sun, Nian X. 1; Email Address: n.sun@neu.edu; Affiliation: 1: Department of Electrical and Computer Engineering, Northeastern University, Boston, Massachusetts 02115, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 3: Department of Chemistry, Northeastern University, Boston, Massachusetts 02115, USA; Source Info: 1/12/2015, Vol. 106 Issue 2, p1; Subject Term: SPIN transfer torque; Subject Term: RESEARCH; Subject Term: DAMPING (Mechanics); Subject Term: SPIN Hall effect; Subject Term: SPECTROMETERS; Subject Term: FERROMAGNETIC resonance; Subject Term: BILAYERS (Solid state physics); NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 5p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.4906062 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100571972&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Domonkos, Matthew T. AU - W. Struve, Kenneth T1 - Guest Editorial Introduction to the Special Issue on Megagauss Magnetic Fields: Production & Application. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2015/01/02/Jan2015 Part 2 VL - 43 IS - 1 M3 - Article SP - 333 EP - 334 SN - 00933813 AB - This Special Issue on Megagauss Magnetic Fields serves as a focal point for the documentation of recent research achievements and advances from around the world in high magnetic field generation and utilization to produce extreme states of matter. The Megagauss Conferences began in 1965 and have provided an international venue for communication of scientific advances related to the production and use of very high magnetic fields. The most recent Megagauss Conference was held in October 2012, in Maui, Hawaii, and this Special Issue represents a selection of the topics presented. We hope you will find this Special Issue both interesting and informative. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC fields KW - RESEARCH KW - ELECTROMAGNETIC theory KW - GAUSSIAN sums KW - EXPONENTIAL sums KW - FIELD theory (Physics) KW - Educational institutions KW - Laboratories KW - Magnetic resonance KW - Materials KW - Physics KW - Plasmas KW - Production N1 - Accession Number: 100348437; Domonkos, Matthew T. 1 W. Struve, Kenneth 2; Affiliation: 1: , Air Force Research Laboratory, Kirtland AFB, NM, USA 2: , Sandia National Laboratories, Albuquerque, NM, USA; Source Info: Jan2015 Part 2, Vol. 43 Issue 1, p333; Subject Term: MAGNETIC fields; Subject Term: RESEARCH; Subject Term: ELECTROMAGNETIC theory; Subject Term: GAUSSIAN sums; Subject Term: EXPONENTIAL sums; Subject Term: FIELD theory (Physics); Author-Supplied Keyword: Educational institutions; Author-Supplied Keyword: Laboratories; Author-Supplied Keyword: Magnetic resonance; Author-Supplied Keyword: Materials; Author-Supplied Keyword: Physics; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Production; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2014.2378532 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100348437&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Domonkos, Matthew T. AU - Degnan, James H. AU - Adamson, Paul E. AU - Amdahl, David J. AU - Blasy, Brian AU - Cooksey, Rufus AU - Grabowski, Theodore Chris AU - Lehr, Frederick Mark AU - Robinson, Paul Randy AU - Ruden, Edward L. AU - White, William M. AU - Frese, Michael H. AU - Frese, Sherry D. AU - Coffey, Sean K. AU - Camacho, J. Frank AU - Makhin, Vladimir AU - Roderick, Norman AU - Parker, Jerald V. AU - Lerma, Al AU - Gale, Donald T1 - Experimental Studies of an Ultrahigh-Speed Plasma Flow. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2015/01/02/Jan2015 Part 2 VL - 43 IS - 1 M3 - Article SP - 374 EP - 388 SN - 00933813 AB - In 1991, Turchi et al. reported evidence for a 2000 km/s aluminum plasma that originated from the upstream boundary of a wire array armature in a plasma flow switch (PFS). The 2008 article by Turchi et al. posits that if such high $Z$ plasma could instead be composed of deuterium or a deuterium–tritium mixture, then the resultant multi-keV plasma would make an effective target for magnetized plasma compression to fusion conditions. This report documents several experiments executed in an effort to achieve an ultrahigh-speed flow in a deuterium plasma. The first phase of this research concentrated on extension of the earlier work to a lower current system that would emulate the PFS used in series with an imploding liner load. The apparatus was also modified to permit pulsed injection of deuterium gas along the insulated coaxial electrodes between the PFS armature and the vacuum power feed. The experiments met with limited success, exhibiting evidence of a 550 km/s plasma flow which convected a small fraction of the total magnetic field. Two subsequent tests were conducted using foam armatures. In both cases, current prematurely shunted upstream in the vacuum feed. Several possible causes were explored for the shunting of the current. Among the modifications implemented, the gas injection system was altered to increase both the quantity of gas adjacent to the armature while facilitating an increased pressure gradient between the armature and the current feed. A series of low-energy shots were conducted to examine the impact of several proposed design modifications on current delivery to the armature. These experiments demonstrated that the hardware assembled for this investigation was unlikely to forestall breakdown in the injected gas as required by Turchi et al. Nevertheless, two experiments were conducted to evaluate performance with foam armatures. Both experiments exhibited good current delivery to the armature, behaving initially like the low-energy experiments. The magnetic flux convected downstream was greater than in any of the prior experiments, though significant work remains to demonstrate the ultrahigh-speed plasma flow concept. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA flow KW - RESEARCH KW - FLOW (Fluid dynamics) KW - FLUID dynamics KW - PLASMA jets KW - PLASMA focus KW - Aluminum KW - Arrays KW - Controlled fusion KW - Deuterium KW - Feeds KW - imploding liners KW - magnetized plasma compression KW - Plasmas KW - Probes KW - pulsed power KW - Wires N1 - Accession Number: 100348430; Domonkos, Matthew T. 1 Degnan, James H. 1 Adamson, Paul E. 1 Amdahl, David J. 1 Blasy, Brian 1 Cooksey, Rufus 1 Grabowski, Theodore Chris 1 Lehr, Frederick Mark 1 Robinson, Paul Randy 1 Ruden, Edward L. 1 White, William M. 1 Frese, Michael H. 2 Frese, Sherry D. 2 Coffey, Sean K. 2 Camacho, J. Frank 2 Makhin, Vladimir 2 Roderick, Norman 2 Parker, Jerald V. 3 Lerma, Al 3 Gale, Donald 3; Affiliation: 1: , Air Force Research Laboratory, Kirtland AFB, NM, USA 2: , NumerEx LLC, Albuquerque, NM, USA 3: , SAIC, Albuquerque, NM, USA; Source Info: Jan2015 Part 2, Vol. 43 Issue 1, p374; Subject Term: PLASMA flow; Subject Term: RESEARCH; Subject Term: FLOW (Fluid dynamics); Subject Term: FLUID dynamics; Subject Term: PLASMA jets; Subject Term: PLASMA focus; Author-Supplied Keyword: Aluminum; Author-Supplied Keyword: Arrays; Author-Supplied Keyword: Controlled fusion; Author-Supplied Keyword: Deuterium; Author-Supplied Keyword: Feeds; Author-Supplied Keyword: imploding liners; Author-Supplied Keyword: magnetized plasma compression; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Probes; Author-Supplied Keyword: pulsed power; Author-Supplied Keyword: Wires; Number of Pages: 15p; Document Type: Article L3 - 10.1109/TPS.2014.2360648 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100348430&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jauchem, James R. T1 - Exposures to Conducted Electrical Weapons (Including TASER® Devices): How Many and for How Long are Acceptable? JO - Journal of Forensic Sciences (Wiley-Blackwell) JF - Journal of Forensic Sciences (Wiley-Blackwell) Y1 - 2015/01/02/Jan2015 Supplement VL - 60 M3 - Article SP - S116 EP - S129 SN - 00221198 AB - TASER® conducted electrical weapons ( CEWs) are an important law-enforcement tool. The purposes of this study are a) to review recent literature regarding potential pathophysiological responses to applications of CEWs, and other related issues and b) to evaluate whether enough data exist to determine the acceptability of longer-duration (or repeated) exposures. This is a narrative review, using a multidisciplinary approach of analyzing reports from physiological, legal-medical, and police-strategy literature sources. In general, short-duration exposures to CEWs result in limited effects. Longer-duration or repeated exposures may be utilized with caution, although there are currently not enough data to determine the acceptability of all types of exposures. Data examined in the literature have inherent limitations. Appropriateness of specific types of CEW usage may be determined by individual police agencies, applying risk/benefit analyses unique to each organization. While more research is recommended, initial concepts of potential future long-duration or repeated CEW applications are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Forensic Sciences (Wiley-Blackwell) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STUN guns KW - LAW enforcement KW - PATHOLOGICAL physiology KW - WEAPONS KW - DEATH KW - conducted electrical weapon KW - conducted energy weapon KW - electromuscular disruption KW - electronic control device KW - forensic science KW - TASER N1 - Accession Number: 100631413; Jauchem, James R. 1; Affiliation: 1: Bio-effects Division, Human Effectiveness Directorate, 711th Human Performance Wing, U.S. Air Force Research Laboratory; Source Info: Jan2015 Supplement, Vol. 60, pS116; Subject Term: STUN guns; Subject Term: LAW enforcement; Subject Term: PATHOLOGICAL physiology; Subject Term: WEAPONS; Subject Term: DEATH; Author-Supplied Keyword: conducted electrical weapon; Author-Supplied Keyword: conducted energy weapon; Author-Supplied Keyword: electromuscular disruption; Author-Supplied Keyword: electronic control device; Author-Supplied Keyword: forensic science; Author-Supplied Keyword: TASER; NAICS/Industry Codes: 922120 Police Protection; NAICS/Industry Codes: 922190 Other Justice, Public Order, and Safety Activities; Number of Pages: 14p; Document Type: Article L3 - 10.1111/1556-4029.12672 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100631413&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jha, Sushant K. AU - Szczepanski, Christopher J. AU - John, Reji AU - Larsen, James M. T1 - Deformation heterogeneities and their role in life-limiting fatigue failures in a two-phase titanium alloy. JO - Acta Materialia JF - Acta Materialia Y1 - 2015/01// VL - 82 M3 - Article SP - 378 EP - 395 SN - 13596454 AB - Fatigue crack-initiation sites in Ti–6Al–2Sn–4Zr–6Mo (Ti–6–2–4–6), an α + β titanium alloy used in turbine engine applications, were characterized with emphasis on distinguishing the microstructural neighborhoods and mechanisms that produce the life-limiting failures vs. those that promote the mean-lifetime behavior. The characterization methods included quantitative tilt fractography, focused ion beam milling across crack-initiation facets, and electron backscattered diffraction analysis. The motivation for discerning between the life-limiting and the mean-dominating crack-initiation microstructural neighborhoods stemmed from the previously developed understanding that the mean and the life-limiting behaviors respond differently to stress level (and many other variables), leading to an increasing separation between the two subpopulations as the stress level is decreased, thereby increasing the variability in lifetime. The different rates of response of the two behaviors was found to arise because the life-limiting mechanism was dominated by the crack-growth lifetime, with microstructural-scale crack-initiation occurring within the first few fatigue cycles, whereas the mean behavior was increasingly dominated by the crack-initiation lifetime as the stress level was decreased. Representative specimens for 2-D characterization of crack-initiation neighborhoods were selected from life-limiting and mean-dominating populations generated by fatigue tests on a duplex α + β phase microstructure of Ti–6–2–4–6 under a narrow range of applied stress amplitudes. A compilation of data on the crack-initiation facet and the neighborhood of the faceted grain from multiple specimens pointed to at least four categories of critical microstructural configurations, each representing a set of necessary (but perhaps not sufficient) conditions for crack-initiation in this alloy. Based on this characterization, a hypothesis for the life-limiting fatigue behavior is presented. The hypothesis invokes the concept of hierarchy of fatigue deformation heterogeneities, which is suggested to develop within the first few fatigue cycles. The deformation heterogeneity is suggested to be linked to the underlying randomness and hierarchy in the microstructural arrangements. This hypothesis appears to explain the occurrence of crack-growth-lifetime-dominated, life-limiting failures in the regime of high-cycle fatigue, as shown in this study, and suggests a probability of occurrence of such failures even in the very-high-cycle fatigue regime, although with diminishing probability as the stress level is decreased. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEFORMATIONS (Mechanics) KW - FATIGUE cracks KW - CRACK initiation (Fracture mechanics) KW - MICROSTRUCTURE KW - FRACTOGRAPHY KW - ION beams KW - Crack-initiation neighborhood KW - Fatigue life KW - Hierarchy of deformation heterogeneities KW - Life-limiting mechanism KW - Ti–6Al–2Sn–4Zr–6Mo N1 - Accession Number: 99512491; Jha, Sushant K. 1,2; Email Address: sushantjha@hotmail.com Szczepanski, Christopher J. 3 John, Reji 1 Larsen, James M. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson Air Force Base, OH 45433, USA 2: Universal Technology Corporation, Dayton, OH 45432, USA 3: Special Metals Corporation, New Hartford, NY 13413, USA; Source Info: Jan2015, Vol. 82, p378; Subject Term: DEFORMATIONS (Mechanics); Subject Term: FATIGUE cracks; Subject Term: CRACK initiation (Fracture mechanics); Subject Term: MICROSTRUCTURE; Subject Term: FRACTOGRAPHY; Subject Term: ION beams; Author-Supplied Keyword: Crack-initiation neighborhood; Author-Supplied Keyword: Fatigue life; Author-Supplied Keyword: Hierarchy of deformation heterogeneities; Author-Supplied Keyword: Life-limiting mechanism; Author-Supplied Keyword: Ti–6Al–2Sn–4Zr–6Mo; Number of Pages: 18p; Document Type: Article L3 - 10.1016/j.actamat.2014.08.034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99512491&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McNamara, Leo F. AU - Thompson, Donald C. T1 - Validation of COSMIC values of foF2 and M(3000)F2 using ground-based ionosondes. JO - Advances in Space Research JF - Advances in Space Research Y1 - 2015/01// VL - 55 IS - 1 M3 - Article SP - 163 EP - 169 SN - 02731177 AB - The COSMIC radio occultation values of the ionospheric F2 region peak parameters are a potential source of ground-truth data for validation of global ionospheric models. They should therefore be validated against reliable ground-truth observations such as manually scaled ionograms from ground-based vertical incidence (VI) ionosondes. We have therefore used the manually scaled hourly ionospheric characteristics from the Australian ionosonde network for this purpose. A comparison of the COSMIC F2 peak density, NmF2, against the values of the maximum plasma frequency, foF2, scaled from the Australian ionosondes showed very good agreement, with an RMS error in foF2 at mid latitudes of ∼0.5 MHz. The ionograms from the Australian ionosondes are manually processed so the plasma frequency profile and the value of hmF2, the altitude corresponding to foF2, are not routinely provided. However, the ionograms do provide observations of M(3000)F2, the obliquity factor for a 3000 km communications circuit, which is well correlated with hmF2. We have therefore compared observed and COSMIC values of M(3000)F2. The latter are derived from numerical ionograms calculated for the COSMIC profiles. Because of the known uncertainties in the COSMIC profiles, we have applied some stringent acceptance procedures to them, especially for the M(3000)F2 analysis. These acceptance procedures are all automated, reducing the possibility of biased data selection. [ABSTRACT FROM AUTHOR] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSONDES KW - OCCULTATIONS (Astronomy) KW - IONOSPHERE KW - IONOGRAMS KW - ELECTRON distribution KW - NUMERICAL analysis KW - COSMIC radio occultation KW - Electron density profile KW - Ionosphere KW - Validation KW - Vertical incidence ionosonde N1 - Accession Number: 100005954; McNamara, Leo F. 1; Email Address: leo.mcnamara@us.af.mil Thompson, Donald C. 1; Affiliation: 1: Air Force Research Laboratory, AFRL/RVBXI, Kirtland AFB, NM 87117, United States; Source Info: Jan2015, Vol. 55 Issue 1, p163; Subject Term: IONOSONDES; Subject Term: OCCULTATIONS (Astronomy); Subject Term: IONOSPHERE; Subject Term: IONOGRAMS; Subject Term: ELECTRON distribution; Subject Term: NUMERICAL analysis; Author-Supplied Keyword: COSMIC radio occultation; Author-Supplied Keyword: Electron density profile; Author-Supplied Keyword: Ionosphere; Author-Supplied Keyword: Validation; Author-Supplied Keyword: Vertical incidence ionosonde; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.asr.2014.07.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100005954&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Poggie, Jonathan AU - Bisek, Nicholas J. AU - Kimmel, Roger L. AU - Stanfield, Scott A. T1 - Spectral Characteristics of Separation Shock Unsteadiness. JO - AIAA Journal JF - AIAA Journal Y1 - 2015/01// VL - 53 IS - 1 M3 - Article SP - 200 EP - 214 SN - 00011452 AB - Spectra of wall-pressure fluctuations caused by separation shock unsteadiness were compared for data obtained from wind-tunnel experiments, the Hypersonic International Flight Research Experimentation flight test 1, and large-eddy simulations. The results were found to be in generally good agreement, despite differences in Mach number and two orders of magnitude difference in Reynolds number. Relatively good agreement was obtained between these spectra and the predictions of a theory developed by Plotkin. The predictions of this theory are also qualitatively consistent with the results of experiments in which the shock motion was synchronized to controlled perturbations. The results presented here support the idea that separation unsteadiness has common features across a broad range of compressible flows and that it behaves as a selective amplifier of large-scale disturbances in the incoming flow. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIND tunnel testing KW - RESEARCH KW - HYPERSONIC aerodynamics KW - SHOCK waves KW - BOUNDARY layer (Aerodynamics) KW - TURBULENT boundary layer N1 - Accession Number: 102654777; Poggie, Jonathan 1 Bisek, Nicholas J. 2 Kimmel, Roger L. 3 Stanfield, Scott A. 4; Affiliation: 1: Senior Aerospace Engineer, RQHF, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Research Aerospace Engineer, RQHF, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 3: Principal Aerospace Engineer, RQHF, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 4: Research Scientist, Spectral Energies LLC, Dayton, Ohio 45431; Source Info: Jan2015, Vol. 53 Issue 1, p200; Subject Term: WIND tunnel testing; Subject Term: RESEARCH; Subject Term: HYPERSONIC aerodynamics; Subject Term: SHOCK waves; Subject Term: BOUNDARY layer (Aerodynamics); Subject Term: TURBULENT boundary layer; Number of Pages: 15p; Document Type: Article L3 - 10.2514/1.J053029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102654777&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - DESON, JASON S. T1 - AUTOMATING THE RIGHT STUFF? THE HIDDEN RAMIFICATIONS OF ENSURING AUTONOMOUS AERIAL WEAPON SYSTEMS COMPLY WITH INTERNATIONAL HUMANITARIAN LAW. JO - Air Force Law Review JF - Air Force Law Review Y1 - 2015/01// VL - 72 M3 - Article SP - 85 EP - 122 PB - Superintendent of Documents SN - 00948381 AB - The article focuses on the dangers of replacing the human pilot with a robot pilot in the autonomous aerial weapon system in context with international humanitarian law. It mentions that the International Committee of the Red Cross (ICRC) with autonomous weapon systems and the situational awareness related to the drones aircraft in the U.S. It also mentions the role of U.S. Department of Defense (DoD) to regulate the autonomous weapon systems. KW - AUTOMATIC pilot (Airplanes) KW - AERIAL weapons KW - SITUATIONAL awareness KW - DRONE aircraft KW - INTERNATIONAL Committee of the Red Cross KW - UNITED States. Dept. of Defense N1 - Accession Number: 103605206; DESON, JASON S. 1,2; Affiliation: 1: Judge Advocate, United States Air Force 2: Associate Professor, International and Operational Law Department, Judge Advocate General's Legal Center and School, United States Army, Charlottesville, Virginia. J.D.; Source Info: 2015, Vol. 72, p85; Subject Term: AUTOMATIC pilot (Airplanes); Subject Term: AERIAL weapons; Subject Term: SITUATIONAL awareness; Subject Term: DRONE aircraft; Company/Entity: INTERNATIONAL Committee of the Red Cross Company/Entity: UNITED States. Dept. of Defense; Number of Pages: 38p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103605206&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kehimkar, Benjamin AU - Parsons, Brendon AU - Hoggard, Jamin AU - Billingsley, Matthew AU - Bruno, Thomas AU - Synovec, Robert T1 - Modeling RP-1 fuel advanced distillation data using comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry and partial least squares analysis. JO - Analytical & Bioanalytical Chemistry JF - Analytical & Bioanalytical Chemistry Y1 - 2015/01// VL - 407 IS - 1 M3 - Article SP - 321 EP - 330 PB - Springer Science & Business Media B.V. SN - 16182642 AB - Recent efforts in predicting rocket propulsion (RP-1) fuel performance through modeling put greater emphasis on obtaining detailed and accurate fuel properties, as well as elucidating the relationships between fuel compositions and their properties. Herein, we study multidimensional chromatographic data obtained by comprehensive two-dimensional gas chromatography combined with time-of-flight mass spectrometry (GC × GC-TOFMS) to analyze RP-1 fuels. For GC × GC separations, RTX-Wax (polar stationary phase) and RTX-1 (non-polar stationary phase) columns were implemented for the primary and secondary dimensions, respectively, to separate the chemical compound classes (alkanes, cycloalkanes, aromatics, etc.), providing a significant level of chemical compositional information. The GC × GC-TOFMS data were analyzed using partial least squares regression (PLS) chemometric analysis to model and predict advanced distillation curve (ADC) data for ten RP-1 fuels that were previously analyzed using the ADC method. The PLS modeling provides insight into the chemical species that impact the ADC data. The PLS modeling correlates compositional information found in the GC × GC-TOFMS chromatograms of each RP-1 fuel, and their respective ADC, and allows prediction of the ADC for each RP-1 fuel with good precision and accuracy. The root-mean-square error of calibration (RMSEC) ranged from 0.1 to 0.5 °C, and was typically below ∼0.2 °C, for the PLS calibration of the ADC modeling with GC × GC-TOFMS data, indicating a good fit of the model to the calibration data. Likewise, the predictive power of the overall method via PLS modeling was assessed using leave-one-out cross-validation (LOOCV) yielding root-mean-square error of cross-validation (RMSECV) ranging from 1.4 to 2.6 °C, and was typically below ∼2.0 °C, at each % distilled measurement point during the ADC analysis. [Figure not available: see fulltext.] [ABSTRACT FROM AUTHOR] AB - Copyright of Analytical & Bioanalytical Chemistry is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISTILLATION KW - GAS chromatography KW - TIME-of-flight mass spectrometry KW - LEAST squares KW - AIRPLANES -- Rocket engines KW - CHEMOMETRICS KW - Advanced distillation curve (ADC) KW - Gas chromatography KW - GC × GC-TOFMS KW - Partial least squares (PLS) analysis KW - RP-1 fuel KW - Two-dimensional N1 - Accession Number: 100209514; Kehimkar, Benjamin 1 Parsons, Brendon 1 Hoggard, Jamin 1 Billingsley, Matthew 2 Bruno, Thomas 3 Synovec, Robert 1; Email Address: synovec@chem.washington.edu; Affiliation: 1: Department of Chemistry, University of Washington, Seattle 98195 USA 2: Air Force Research Laboratory/RQRC, 10 E Saturn Blvd Edwards AFB 93524 USA 3: Applied Chemicals and Materials Division, National Institute of Standards and Technology, Boulder 80305 USA; Source Info: Jan2015, Vol. 407 Issue 1, p321; Subject Term: DISTILLATION; Subject Term: GAS chromatography; Subject Term: TIME-of-flight mass spectrometry; Subject Term: LEAST squares; Subject Term: AIRPLANES -- Rocket engines; Subject Term: CHEMOMETRICS; Author-Supplied Keyword: Advanced distillation curve (ADC); Author-Supplied Keyword: Gas chromatography; Author-Supplied Keyword: GC × GC-TOFMS; Author-Supplied Keyword: Partial least squares (PLS) analysis; Author-Supplied Keyword: RP-1 fuel; Author-Supplied Keyword: Two-dimensional; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1007/s00216-014-8233-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100209514&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CHAP ID - 2014-29521-005 AN - 2014-29521-005 AU - Endsley, Mica R. ED - Boehm-Davis, Deborah A. ED - Durso, Francis T. ED - Lee, John D. ED - Boehm-Davis, Deborah A., (Ed) ED - Durso, Francis T., (Ed) ED - Lee, John D., (Ed) T1 - Human systems integration requirements analysis. T2 - APA handbook of human systems integration. T3 - APA handbooks in psychology Y1 - 2015/// SP - 63 EP - 80 CY - Washington, DC, US PB - American Psychological Association SN - 1-4338-1828-0 SN - 978-1-4338-1828-8 N1 - Accession Number: 2014-29521-005. Partial author list: First Author & Affiliation: Endsley, Mica R.; United States Air Force, Washington, DC, US. Release Date: 20150413. Correction Date: 20170227. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 1-4338-1828-0, Hardcover; 978-1-4338-1828-8, Hardcover. Language: English. Major Descriptor: Human Factors Engineering. Minor Descriptor: Human Machine Systems; Human Machine Systems Design. Classification: Human Factors Engineering (4010). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 18. AB - The development of good requirements is arguably one of the most important stages of the system development process. Requirements form the main driver for the design of new technologies. With inadequate or poorly articulated requirements, the odds of achieving a successful technological implementation that performs the desired functions decreases dramatically. Yet, establishing a set of clear, robust requirements can be one of the most challenging steps of the development process, and it frequently is performed inadequately. In fact, in many system development efforts, the human systems integration (HSI) requirements for effective human use are almost completely missing, or they are so vague as to be useless. Though it follows logically that good requirements provide the roadmap that guides the development process, requirements also provide another important function. In some development efforts, requirements are set by an organization that then goes on to develop the product itself. In many cases, however, the requirements form the basis for a contract to develop the product that is fulfilled by another organization. Most military systems, for example, are made by companies that contract to the government. In other cases, software companies or component manufacturers may develop a system under contract to another company. One simple method of establishing requirements for system design is to specify that the system conform to one of the above standards. Such an approach saves a great deal of work in spelling out each and every human factors design criterion that should be followed in the design. These documents do a fairly good job of laying out requirements for physical systems, such as the design of gauges and dials, the location and functioning of physical controls, the layout of workstations, and the dimensions of access spaces for maintenance across various user population anthropometrics. They also include detailed information on the perceptual characteristics for information displays, such as icon and text heights and color contrast ratios to ensure good readability of information, and decibel level requirements for ensuring that alarms are salient within a given ambient noise environment. There are a number of shortcomings to this approach, however. First, these general human factors designs standards do not include sufficient guidance for the design of computer information displays. Existing standards also do not provide needed support for rapidly developing technologies, such as mobile computing devices, voice recognition systems, or head mounted displays. In general, it is incumbent on the requirements analyst to scour relevant research to determine the best requirements to support human use of newly developing technologies. Most important, none of these standards address the functionality that is needed to support human work in the system or the information requirements for supporting high levels of situation awareness (SA) and decision making, all of which are specific to the application being developed. In fact, a significant amount of the requirements specification process focuses on establishing the system interfaces, training systems, and other infrastructure needed to support the physical, perceptual, and cognitive tasks required of the operator and maintainer. In the remainder of this chapter, I focus on methods for establishing those requirements. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - human systems integration KW - requirement analysis KW - human factors design KW - 2015 KW - Human Factors Engineering KW - Human Machine Systems KW - Human Machine Systems Design KW - 2015 DO - 10.1037/14528-005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-29521-005&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2015-00709-005 AN - 2015-00709-005 AU - Burque, Brandi AU - Baker, Monty T. AU - Van Hasselt, Vincent B. AU - Couwels, Judy ED - Clevenger, Sharon M. Freeman ED - Miller, Laurence ED - Moore, Bret A. ED - Freeman, Arthur ED - Clevenger, Sharon M. Freeman, (Ed) ED - Miller, Laurence, (Ed) ED - Moore, Bret A., (Ed) ED - Freeman, Arthur, (Ed) T1 - Critical incident stress debriefing: What is the state of the science? T2 - Behind the badge: A psychological treatment handbook for law enforcement officers. Y1 - 2015/// SP - 70 EP - 98 CY - New York, NY, US PB - Routledge/Taylor & Francis Group SN - 978-0-415-89229-2 SN - 978-1-138-81890-3 SN - 978-1-315-74492-6 N1 - Accession Number: 2015-00709-005. Partial author list: First Author & Affiliation: Burque, Brandi; San Antonio Police Department, Psychological Services, San Antonio, TX, US. Release Date: 20150615. Correction Date: 20160811. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 978-0-415-89229-2, Hardcover; 978-1-138-81890-3, Paperback; 978-1-315-74492-6, Digital (undefined format). Language: English. Major Descriptor: Crisis Intervention; Debriefing (Psychological); Law Enforcement Personnel; Occupational Stress; Resilience (Psychological). Classification: Police & Legal Personnel (4290). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 29. AB - Officers are called upon to handle situations that civilians do not expect to encounter in their daily lives. The job entails responding to calls in which distress, misery, and human suffering are readily apparent. Indeed, stressors are present across the board for the officer, from organizational practices, the daily calls for service, to personal and family life. Not surprisingly, first responder populations, in general, are at a higher risk for stress-related physical and psychological disorders. Therefore, developing and implementing stress management programs are important steps toward mitigating stress reactions and facilitating recovery. This chapter will focus on the rationale for crisis intervention in law enforcement and the extant literature on the issue. Specifically this chapter will provide a brief overview of law enforcement stress, a presentation of terminology associated with the field of crisis intervention, a review of the literature on the use of crisis intervention in victim populations and law enforcement, a discussion of the key issues in this area, and a presentation of factors associated with stress resiliency, with case examples. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - law enforcement stress KW - critical incident stress debriefing KW - crisis intervention KW - stress resiliency KW - 2015 KW - Crisis Intervention KW - Debriefing (Psychological) KW - Law Enforcement Personnel KW - Occupational Stress KW - Resilience (Psychological) KW - 2015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-00709-005&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2015-00709-008 AN - 2015-00709-008 AU - Brockman, Andrea M. AU - Burque, Brandi AU - Van Hasselt, Vincent B. AU - Baker, Monty T. ED - Clevenger, Sharon M. Freeman ED - Miller, Laurence ED - Moore, Bret A. ED - Freeman, Arthur ED - Clevenger, Sharon M. Freeman, (Ed) ED - Miller, Laurence, (Ed) ED - Moore, Bret A., (Ed) ED - Freeman, Arthur, (Ed) T1 - Law enforcement in corrections. T2 - Behind the badge: A psychological treatment handbook for law enforcement officers. Y1 - 2015/// SP - 145 EP - 167 CY - New York, NY, US PB - Routledge/Taylor & Francis Group SN - 978-0-415-89229-2 SN - 978-1-138-81890-3 SN - 978-1-315-74492-6 N1 - Accession Number: 2015-00709-008. Partial author list: First Author & Affiliation: Brockman, Andrea M.; Center for Psychological Studies, Nova Southeastern University, FL, US. Release Date: 20150615. Correction Date: 20160811. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 978-0-415-89229-2, Hardcover; 978-1-138-81890-3, Paperback; 978-1-315-74492-6, Digital (undefined format). Language: English. Major Descriptor: Correctional Institutions; Law Enforcement; Prisons; Working Conditions; Corrections Officers. Minor Descriptor: Dangerousness; Occupational Stress; Violence. Classification: Police & Legal Personnel (4290). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). Tests & Measures: Prison Social Climate Survey; Work Stress Scale for Correctional Officers; Correctional Officer Stress Survey; Law Enforcement Officer Stress Survey DOI: 10.1037/t20713-000. References Available: Y. Page Count: 23. AB - In this chapter, the authors bring the reader into the rarely seen, or discussed, world of law enforcement officers in correctional settings. Prisons are universally accepted as dangerous settings, for any job in that environment. The authors provide us with an overview of specific areas of stress, danger, violence, and role strain in this highly specialized setting. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - law enforcement KW - corrections KW - corrections officer KW - prisons KW - stress KW - job environment KW - danger KW - violence KW - role strain KW - 2015 KW - Correctional Institutions KW - Law Enforcement KW - Prisons KW - Working Conditions KW - Corrections Officers KW - Dangerousness KW - Occupational Stress KW - Violence KW - 2015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-00709-008&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2015-07832-004 AN - 2015-07832-004 AU - Boals, Adriel AU - Schuettler, Darnell AU - Southard-Dobbs, Shana ED - Watson, Lynn A. ED - Bernsten, Dorthe ED - Watson, Lynn A., (Ed) ED - Bernsten, Dorthe, (Ed) T1 - Construing trauma as a double-edged sword: How narrative components of autobiographical memory relate to devastation and growth from trauma. T2 - Clinical perspectives on autobiographical memory. Y1 - 2015/// SP - 65 EP - 84 CY - New York, NY, US PB - Cambridge University Press SN - 978-1-107-03987-2 N1 - Accession Number: 2015-07832-004. Partial author list: First Author & Affiliation: Boals, Adriel; University of North Texas, Denton, TX, US. Release Date: 20150511. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-1-107-03987-2, Hardcover. Language: English. Major Descriptor: Autobiographical Memory; Narratives; Posttraumatic Stress Disorder; Posttraumatic Growth. Minor Descriptor: Cognitions. Classification: Neuroses & Anxiety Disorders (3215). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 20. AB - This chapter discusses how narrative components of autobiographical memory relate to devastation and growth from trauma. The narrative an individual creates regarding a traumatic experience plays a key role in the types of trauma outcomes experienced. If the event is construed as having low centrality and does not challenge one's core views and beliefs, the event will have a limited psychological impact on the individual. But if a negative event is constituted as central to one's identity and life story, it causes a reexamination of values and beliefs. This reexamination sets the stage for the possibility of devastation. For instance, subsequent construals such as a negative perspective of the event, negative post-trauma cognitions of the self and world, and intrusive ruminations likely contribute to the development of posttraumatic stress disorder (PTSD) symptoms. However, the reexamination also sets the stage for the possibility of growth. Subsequent construals such as positive perspectives of the event, a lack of negative posttraumatic cognitions about the self and world, and deliberate rumination likely contribute to posttraumatic growth (PTG). Understanding the narrative features that differentiate pathways to PTSD symptoms and PTG can help therapists not only reduce negative trauma outcomes such as PTSD symptoms, but also assist the individual to go beyond mere symptom reduction by also fostering growth. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - narrative components KW - autobiographical memory KW - posttraumatic growth KW - cognitions KW - 2015 KW - Autobiographical Memory KW - Narratives KW - Posttraumatic Stress Disorder KW - Posttraumatic Growth KW - Cognitions KW - 2015 DO - 10.1017/CBO9781139626767.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-07832-004&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2015-42079-011 AN - 2015-42079-011 AU - Swindler, Stephanie AU - Eschleman, Kevin J. ED - Karanika-Murray, Maria ED - Biron, Caroline ED - Karanika-Murray, Maria, (Ed) ED - Biron, Caroline, (Ed) T1 - In line for takeoff...and waiting: Challenges with getting a wellness intervention started in the military. T2 - Derailed organizational interventions for stress and well-being: Confessions of failure and solutions for success. Y1 - 2015/// SP - 101 EP - 106 CY - New York, NY, US PB - Springer Science + Business Media SN - 978-94-017-9866-2 SN - 978-94-017-9867-9 AD - Swindler, Stephanie, Air Force Research Laboratory, Kirtland, NM, US N1 - Accession Number: 2015-42079-011. Partial author list: First Author & Affiliation: Swindler, Stephanie; Air Force Research Laboratory, Kirtland, NM, US. Release Date: 20160317. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-94-017-9866-2, Hardcover; 978-94-017-9867-9, Digital (undefined format). Language: English. Major Descriptor: Intervention; Military Personnel; Well Being. Minor Descriptor: Health; Leadership; Morale; Organizational Structure. Classification: Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 6. AB - Due to increased military efforts over die last decade, a multitude of wellness challenges have hit the home front within the military (Allen, Armed Forces J, May 2011; Griffith, Suicide Life Threat Behav 42:453-469, 2012). Both military personnel and civilian employees have experienced an increase in workload, overtime worked and stricter policies within the workplace, all culminating in a tremendous amount of operational demands and employee strain during this time. In addition, a recent APA assessment of military health barriers indicate that there is growing concern of the availability, acceptability and accessibility of mental health resources (Johnson et al., The psychological needs of US military service members and their families: a preliminary report. American Psychological Association Presidential Task Force on Military Deployment Services for Youth, Families and Service Members, 2007). Indicators of these issues were being reported on several Air Force (AF) bases and a team of researchers was called upon to determine specific stressors and possible solutions to alleviate the issues. Many interviews, observations, and focus groups were conducted and resulted in the identification of a wellness intervention strategy to improve morale and workplace conditions; however, the intervention was not implemented. This chapter discusses present strategies for overcoming leadership challenges in a military environment. Most importantly, how to work with leadership to help them understand their role and impact in the intervention, as well as, the importance of having an appropriate infrastructure in place to facilitate implementation of the intervention and greatly impact employee morale and well-being. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Leadership KW - Morale KW - Well-being KW - Organizational structure KW - 2015 KW - Intervention KW - Military Personnel KW - Well Being KW - Health KW - Leadership KW - Morale KW - Organizational Structure KW - 2015 DO - 10.1007/978-94-017-9867-9_11 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-42079-011&site=ehost-live&scope=site UR - steph_swindler@yahoo.com DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2015-42079-016 AN - 2015-42079-016 AU - Eschleman, Kevin J. AU - Amaya, David AU - Swindler, Stephanie ED - Karanika-Murray, Maria ED - Biron, Caroline ED - Karanika-Murray, Maria, (Ed) ED - Biron, Caroline, (Ed) T1 - 'I object!' Overcoming obstacles between organizational researchers and legal advisors. T2 - Derailed organizational interventions for stress and well-being: Confessions of failure and solutions for success. Y1 - 2015/// SP - 143 EP - 149 CY - New York, NY, US PB - Springer Science + Business Media SN - 978-94-017-9866-2 SN - 978-94-017-9867-9 AD - Eschleman, Kevin J., Department of Psychology, San Francisco State University, San Francisco, CA, US N1 - Accession Number: 2015-42079-016. Partial author list: First Author & Affiliation: Eschleman, Kevin J.; Department of Psychology, San Francisco State University, San Francisco, CA, US. Release Date: 20160317. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-94-017-9866-2, Hardcover; 978-94-017-9867-9, Digital (undefined format). Language: English. Major Descriptor: Business Organizations; Goals; Leadership; Well Being. Minor Descriptor: Intervention; Laws; Military Personnel; Stress. Classification: Management & Management Training (3640). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 7. AB - There are unique obstacles that face researchers when a health intervention has full endorsement of senior leadership. Full endorsement results in the availability of all organizational resources, which often include experts in an array of disciplines. With these resources come high expectations, strict timelines, competing goals, and differing concerns that may lead to unforeseen deviations to the initial intervention strategy. We have found that one of the biggest hurdles to overcome in this process is attaining the intervention endorsement from the legal advisor. Thus, this chapter will focus on the communication obstacles encountered between organizational researchers and legal advisors. The lessons learned involve the necessity for a better understanding of the legal advisors' goals and common legal issues. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Well-being KW - Stress KW - Intervention KW - Military KW - Air Force KW - Legal KW - 2015 KW - Business Organizations KW - Goals KW - Leadership KW - Well Being KW - Intervention KW - Laws KW - Military Personnel KW - Stress KW - 2015 DO - 10.1007/978-94-017-9867-9_16 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-42079-016&site=ehost-live&scope=site UR - steph_swindler@yahoo.com UR - damaya@laborlawyers.com UR - kesch@sfsu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Macdonell, Scott AU - Mastronardi, Nick T1 - Waging simple wars: a complete characterization of two-battlefield Blotto equilibria. JO - Economic Theory JF - Economic Theory Y1 - 2015/01// VL - 58 IS - 1 M3 - Article SP - 183 EP - 216 PB - Springer Science & Business Media B.V. SN - 09382259 AB - We analyze the strategic allocation of resources across two contests as in the canonical Colonel Blotto game. In the games we study, two players simultaneously allocate their forces across two fields of battle. The larger force on each battlefield wins that battle, and the payoff to a player is the sum of the values of battlefields won. We completely characterize the set of Nash equilibria of all two-battlefield Blotto games and provide the unique equilibrium payoffs. We also show how to extend our characterization to cover previously unstudied games with nonlinear resource constraints. [ABSTRACT FROM AUTHOR] AB - Copyright of Economic Theory is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESOURCE allocation KW - EQUILIBRIUM (Economics) KW - ZERO sum games KW - AUCTIONS KW - NASH equilibrium KW - BATTLEFIELDS KW - All-pay auction KW - C72 KW - Colonel Blotto game KW - D7 KW - H56 KW - Multi-unit auction KW - Warfare KW - Zero-sum game N1 - Accession Number: 100240879; Macdonell, Scott 1; Email Address: macdonells@cna.org; Mastronardi, Nick 2; Email Address: nick.mastronardi@usafa.edu; Affiliations: 1: CNA, 4825 Mark Center Drive Alexandria 22311 USA; 2: US Air Force Academy (USAFA), 2354 Fairchild Dr, Suite 6K118 US Air Force Academy 80840 USA; Issue Info: Jan2015, Vol. 58 Issue 1, p183; Thesaurus Term: RESOURCE allocation; Thesaurus Term: EQUILIBRIUM (Economics); Thesaurus Term: ZERO sum games; Thesaurus Term: AUCTIONS; Thesaurus Term: NASH equilibrium; Subject Term: BATTLEFIELDS; Author-Supplied Keyword: All-pay auction; Author-Supplied Keyword: C72; Author-Supplied Keyword: Colonel Blotto game; Author-Supplied Keyword: D7; Author-Supplied Keyword: H56; Author-Supplied Keyword: Multi-unit auction; Author-Supplied Keyword: Warfare; Author-Supplied Keyword: Zero-sum game; NAICS/Industry Codes: 712120 Historical Sites; Number of Pages: 34p; Document Type: Article L3 - 10.1007/s00199-014-0807-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=100240879&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Alsid, Scott AU - Serna, Mario T1 - Unifying Geometrical Representations of Gauge Theory. JO - Foundations of Physics JF - Foundations of Physics Y1 - 2015/01// VL - 45 IS - 1 M3 - Article SP - 75 EP - 103 PB - Springer Science & Business Media B.V. SN - 00159018 AB - We unify three approaches within the vast body of gauge-theory research that have independently developed distinct representations of a geometrical surface-like structure underlying the vector-potential. The three approaches that we unify are: those who use the compactified dimensions of Kaluza-Klein theory, those who use Grassmannian models (also called gauge theory embedding or $$CP^{N-1}$$ models) to represent gauge fields, and those who use a hidden spatial metric to replace the gauge fields. In this paper we identify a correspondence between the geometrical representations of the three schools. Each school was mostly independently developed, does not compete with other schools, and attempts to isolate the gauge-invariant geometrical surface-like structures that are responsible for the resulting physics. By providing a mapping between geometrical representations, we hope physicists can now isolate representation-dependent physics from gauge-invariant physical results and share results between each school. We provide visual examples of the geometrical relationships between each school for $$U(1)$$ electric and magnetic fields. We highlight a first new result: in all three representations a static electric field (electric field from a fixed ring of charge or a sphere of charge) has a hidden gauge-invariant time dependent surface that is underlying the vector potential. [ABSTRACT FROM AUTHOR] AB - Copyright of Foundations of Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAUGE field theory KW - GEOMETRIC analysis KW - GRASSMANN manifolds KW - GAUGE invariance KW - MAPPINGS (Mathematics) KW - Field theoretical model: $$CP^{N-1}$$ KW - Gauge field theory: composite KW - Gauge geometry embedding KW - Grassmannian models KW - Hidden-spatial geometry KW - Kaluza Klein N1 - Accession Number: 100237777; Alsid, Scott 1; Email Address: c15scott.alsid@usafa.edu Serna, Mario 1; Email Address: mario.serna@usafa.edu; Affiliation: 1: Department of Physics, United States Air Force Academy, 2354 Fairchild Drive USAF Academy 80840 USA; Source Info: Jan2015, Vol. 45 Issue 1, p75; Subject Term: GAUGE field theory; Subject Term: GEOMETRIC analysis; Subject Term: GRASSMANN manifolds; Subject Term: GAUGE invariance; Subject Term: MAPPINGS (Mathematics); Author-Supplied Keyword: Field theoretical model: $$CP^{N-1}$$; Author-Supplied Keyword: Gauge field theory: composite; Author-Supplied Keyword: Gauge geometry embedding; Author-Supplied Keyword: Grassmannian models; Author-Supplied Keyword: Hidden-spatial geometry; Author-Supplied Keyword: Kaluza Klein; Number of Pages: 29p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1007/s10701-014-9841-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100237777&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, Zhu AU - Li, Hongbin AU - Rangaswamy, Muralidhar T1 - Conjugate gradient adaptive matched filter. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2015/01// VL - 51 IS - 1 M3 - Article SP - 178 EP - 191 SN - 00189251 AB - We consider an adaptive reduced-rank detector, referred to as the CG-AMF detector, which is obtained by using the conjugate gradient (CG) algorithm to solve for the weight vector of the adaptive matched filter (AMF). The CG is a computationally efficient iterative algorithm, which finds the projection of the AMF weight vector to the Krylov subspace with a dimension growing with the CG iterations. This effectively leads to a family of reduced-rank detectors indexed by the number of CG iterations. The main purpose of this paper is to examine the output signal-to-interference-and-noise ratio (SINR) of the CG-AMF detector in the presence of strong clutter/interference. Specifically, by exploiting a connection between the CG algorithm and the Lanczos algorithm, we show the output SINR can be asymptotically expressed in a simple form involving a Ritz vector of the sample covariance matrix. The probability density function (pdf) and expected value of the output SINR are then obtained based on this approximation. Our theoretical analysis of the CG-AMF detector is verified by computer simulation. Numerical comparisons are also made with several popular reduced-rank detectors using either data-independent or data-dependent rank reduction approaches. Our results show that for a fixed training size, the CG-AMF detector often reaches its peak output SINR with a lower rank compared with the other reduced-rank detectors, which implies that the CG-AMF detector has lower computational complexity and less training requirement. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONJUGATE gradient methods KW - MATCHED filters KW - KRYLOV subspace KW - LANCZOS method KW - PROBABILITY density function KW - COMPUTATIONAL complexity KW - COVARIANCE matrices KW - Approximation algorithms KW - Covariance matrices KW - Detectors KW - Eigenvalues and eigenfunctions KW - Interference KW - Signal to noise ratio KW - Vectors N1 - Accession Number: 102086851; Chen, Zhu 1 Li, Hongbin 1 Rangaswamy, Muralidhar 2; Affiliation: 1: Stevens Institute of Technology Hoboken, NJ, USA 2: Air Force Research Laboratory Wright Patterson Air Force Base, OH, USA; Source Info: Jan2015, Vol. 51 Issue 1, p178; Subject Term: CONJUGATE gradient methods; Subject Term: MATCHED filters; Subject Term: KRYLOV subspace; Subject Term: LANCZOS method; Subject Term: PROBABILITY density function; Subject Term: COMPUTATIONAL complexity; Subject Term: COVARIANCE matrices; Author-Supplied Keyword: Approximation algorithms; Author-Supplied Keyword: Covariance matrices; Author-Supplied Keyword: Detectors; Author-Supplied Keyword: Eigenvalues and eigenfunctions; Author-Supplied Keyword: Interference; Author-Supplied Keyword: Signal to noise ratio; Author-Supplied Keyword: Vectors; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TAES.2014.130419 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102086851&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shastry, Mahesh AU - Narayanan, Ram AU - Rangaswamy, Muralidhar T1 - Sparsity-based signal processing for noise radar imaging. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2015/01// VL - 51 IS - 1 M3 - Article SP - 314 EP - 325 SN - 00189251 AB - Noise radar systems transmitting incoherent signal sequences have been proposed as powerful candidates for implementing compressively sampled detection and imaging systems. This paper presents an analysis of compressively sampled noise radar systems by formulating ultrawideband (UWB) compressive noise radar imaging as a problem of inverting ill-posed linear systems with circulant system matrices. The nonlinear nature of compressive signal recovery presents challenges in characterizing the performance of radar imaging systems. The suitability of noise waveforms for compressive radar is demonstrated using phase transition diagrams and transform point spread functions (TPSFs). The numerical simulations are designed to provide a compelling validation of the system. Nonidealities occurring in practical compressive noise radar systems are addressed by studying the properties of the transmit waveform. The results suggest that waveforms and system matrices that arise in practical noise radar systems are suitable for compressive signal recovery. Field imaging experiments on various target scenarios using a UWB millimeter wave noise radar validate our analytical results and the theoretical guarantees of compressive sensing. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIGNAL processing -- Digital techniques KW - ELECTRONIC systems KW - COMPRESSED sensing (Signal processing) KW - AEROSPACE engineering KW - Bandwidth KW - Compressed sensing KW - Imaging KW - Noise KW - Radar imaging KW - Radar signal processing KW - MATLAB (Computer software) N1 - Accession Number: 102086861; Shastry, Mahesh 1 Narayanan, Ram 2 Rangaswamy, Muralidhar 3; Affiliation: 1: 3M Corporate Research Labs St. Paul,MN, USA 2: The Pennsylvania State University University Park, PA, USA 3: Air Force Research Laboratory Sensors Directorate Wright Patterson Air Force Base, OH, USA; Source Info: Jan2015, Vol. 51 Issue 1, p314; Subject Term: SIGNAL processing -- Digital techniques; Subject Term: ELECTRONIC systems; Subject Term: COMPRESSED sensing (Signal processing); Subject Term: AEROSPACE engineering; Author-Supplied Keyword: Bandwidth; Author-Supplied Keyword: Compressed sensing; Author-Supplied Keyword: Imaging; Author-Supplied Keyword: Noise; Author-Supplied Keyword: Radar imaging; Author-Supplied Keyword: Radar signal processing; Reviews & Products: MATLAB (Computer software); Number of Pages: 12p; Document Type: Article L3 - 10.1109/TAES.2014.130733 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102086861&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liu, Jun AU - Li, Hongbin AU - Himed, Braham T1 - Persymmetric adaptive target detection with distributed MIMO radar. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2015/01// VL - 51 IS - 1 M3 - Article SP - 372 EP - 382 SN - 00189251 AB - Based on persymmetric structures in received signals, we consider the adaptive detection problem in colored Gaussian noise with unknown persymmetric covariance matrix in a multiple-input, multiple-output (MIMO) radar with spatially dispersed antennas. To this end, a set of secondary data for each transmit-receive pair is assumed to be available. A MIMO version of the persymmetric generalized likelihood ratio test (MIMO-PGLRT) detector is proposed. A closed-form expression for the probability of false alarm of this detector is derived. In addition, a MIMO version of the persymmetric sample matrix inversion (MIMO-PSMI) detector is also developed. Compared to the MIMO-PGLRT detector, MIMO-PSMI has a simpler form and is computationally more efficient. Numerical examples are provided to demonstrate that the proposed two detection algorithms can significantly alleviate the requirement of the amount of secondary data and allow for a noticeable improvement in detection performance. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RANDOM noise theory KW - ELECTRONIC systems -- Software KW - ALGORITHMS -- Software KW - DETECTORS KW - NUMERICAL analysis -- Software KW - MONTE Carlo method KW - Covariance matrices KW - Detectors KW - MIMO radar KW - Noise KW - Radar antennas KW - Training data KW - Vectors N1 - Accession Number: 102086865; Liu, Jun 1 Li, Hongbin 2 Himed, Braham 3; Affiliation: 1: Xidian University, China 2: Stevens Institute of Technology Hoboken, NJ, USA 3: Air Force Research Laboratory Wright Patterson Air Force Base, OH, USA; Source Info: Jan2015, Vol. 51 Issue 1, p372; Subject Term: RANDOM noise theory; Subject Term: ELECTRONIC systems -- Software; Subject Term: ALGORITHMS -- Software; Subject Term: DETECTORS; Subject Term: NUMERICAL analysis -- Software; Subject Term: MONTE Carlo method; Author-Supplied Keyword: Covariance matrices; Author-Supplied Keyword: Detectors; Author-Supplied Keyword: MIMO radar; Author-Supplied Keyword: Noise; Author-Supplied Keyword: Radar antennas; Author-Supplied Keyword: Training data; Author-Supplied Keyword: Vectors; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TAES.2014.130652 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102086865&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kang, Bosung AU - Monga, Vishal AU - Rangaswamy, Muralidhar T1 - Computationally efficient toeplitz approximation of structured covariance under a rank constraint. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2015/01// VL - 51 IS - 1 M3 - Article SP - 775 EP - 785 SN - 00189251 AB - Disturbance covariance estimation is a centrally important problem in radar space-time adaptive processing (STAP). Because training is invariably scarce, estimators that exploit inherent structure and physical radar constraints are needed in practice. This paper develops a new computationally efficient estimator that obtains a Toeplitz approximation of the structured interference covariance under a rank constraint. Previous work has shown that exact maximum likelihood (ML) estimation of Toeplitz covariance matrix has no closed-form solution, and most versions of this problem result in iterative estimators that are computationally expensive. Our proposed solution focuses on a computationally efficient approximation and involves a cascade of two closed-form solutions. First, we obtain the rank-constrained ML estimator whose merits have recently been established firmly for radar STAP. The central contribution of this paper is the rank-preserving Toeplitz approximation, which we demonstrate can be modeled as an equality-constrained quadratic program and also admits a closed form. Extensive performance evaluation on both simulated and knowledge-aided sensor signal processing and expert reasoning data confirms that the proposed estimator yields unbeatable performance for radar STAP under the previously stated conditions of rank and Toeplitz constraints. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TOEPLITZ matrices KW - ANALYSIS of covariance KW - CONSTRAINT algorithms KW - SPACE-time adaptive signal processing KW - MAXIMUM likelihood statistics KW - Approximation methods KW - Covariance matrices KW - Estimation KW - Interference KW - Optimization KW - Radar KW - Training N1 - Accession Number: 102086899; Kang, Bosung 1 Monga, Vishal 1 Rangaswamy, Muralidhar 2; Affiliation: 1: The Pennsylvania State University Electrical Engineering 104 EE East University Park, PA 16802, USA 2: Air Force Research Laboratory Sensors Directorate Radar Signal Processing 2241 Avionics Circle Wright Patterson Air Force Base, OH 45433-7132, USA; Source Info: Jan2015, Vol. 51 Issue 1, p775; Subject Term: TOEPLITZ matrices; Subject Term: ANALYSIS of covariance; Subject Term: CONSTRAINT algorithms; Subject Term: SPACE-time adaptive signal processing; Subject Term: MAXIMUM likelihood statistics; Author-Supplied Keyword: Approximation methods; Author-Supplied Keyword: Covariance matrices; Author-Supplied Keyword: Estimation; Author-Supplied Keyword: Interference; Author-Supplied Keyword: Optimization; Author-Supplied Keyword: Radar; Author-Supplied Keyword: Training; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TAES.2014.130647 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102086899&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sekerak, Michael J. AU - Longmier, Benjamin W. AU - Gallimore, Alec D. AU - Brown, Daniel L. AU - Hofer, Richard R. AU - Polk, James E. T1 - Azimuthal Spoke Propagation in Hall Effect Thrusters. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2015/01//Jan2015 Part 1 VL - 43 IS - 1 M3 - Article SP - 72 EP - 85 SN - 00933813 AB - Spokes are azimuthally propagating perturbations in the plasma discharge of Hall effect thrusters (HETs) that travel in the E \times B direction. The mechanisms for spoke formation are unknown, but their presence has been associated with improved thruster performance in some thrusters motivating a detailed investigation. The propagation of azimuthal spokes are investigated in a 6 kW HET by using high-speed imaging and azimuthally spaced probes. The spoke velocity is determined from high-speed image analysis using three methods with similar results. The spoke velocity for three discharge voltages (300, 400, and 450 V) and three anode mass flow rates (14.7, 19.5, and 25.2 mg/s) are between 1500 and 2200 m/s across a range of magnetic field settings. The spoke velocity is inversely dependent on magnetic field strength for lower B-fields and asymptotes at higher B-fields. Spoke velocities calculated from the probes are consistently higher by 30% or more. An empirically approximated dispersion relation of \omega ^\alpha = {v}_{\rm ch}^\alpha k_{\theta }^\alpha - \omega _{\rm ch}^\alpha where \alpha \ge 1$ yields a characteristic velocity that matches the ion acoustic speed for $\sim 5$ eV electrons which exist in the near-anode and near-field plume regions of the discharge. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HALL effect thruster KW - RESEARCH KW - PERTURBATION (Quantum dynamics) KW - PLASMA flow KW - MAGNETIC fields KW - HALL effect devices KW - Aerospace industry KW - Discharges (electric) KW - hall effect devices KW - Magnetic resonance imaging KW - Magnetic separation KW - Magnetoacoustic effects KW - Oscillators KW - plasma diagnostics KW - plasma measurements KW - plasma waves KW - Plasmas KW - Probes KW - satellites KW - space technology N1 - Accession Number: 100348408; Sekerak, Michael J. 1 Longmier, Benjamin W. 1 Gallimore, Alec D. 1 Brown, Daniel L. 2 Hofer, Richard R. 3 Polk, James E. 4; Affiliation: 1: Department of Aerospace EngineeringPlasmadynamics and Electric Propulsion Laboratory, University of Michigan, Ann Arbor, MI, USA 2: , U.S. Air Force Research Laboratory, Edwards AFB, CA, USA 3: Electric Propulsion Group, Jet Propulsion Laboratory, Pasadena, CA, USA 4: Propulsion and Materials Engineering Section, Jet Propulsion Laboratory, Pasadena, CA, USA; Source Info: Jan2015 Part 1, Vol. 43 Issue 1, p72; Subject Term: HALL effect thruster; Subject Term: RESEARCH; Subject Term: PERTURBATION (Quantum dynamics); Subject Term: PLASMA flow; Subject Term: MAGNETIC fields; Subject Term: HALL effect devices; Author-Supplied Keyword: Aerospace industry; Author-Supplied Keyword: Discharges (electric); Author-Supplied Keyword: hall effect devices; Author-Supplied Keyword: Magnetic resonance imaging; Author-Supplied Keyword: Magnetic separation; Author-Supplied Keyword: Magnetoacoustic effects; Author-Supplied Keyword: Oscillators; Author-Supplied Keyword: plasma diagnostics; Author-Supplied Keyword: plasma measurements; Author-Supplied Keyword: plasma waves; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Probes; Author-Supplied Keyword: satellites; Author-Supplied Keyword: space technology; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TPS.2014.2355223 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100348408&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buchanan, Austin AU - Je Sang Sung AU - Butenko, Sergiy AU - Pasiliao, Eduardo L. T1 - An Integer Programming Approach for Fault-Tolerant Connected Dominating Sets. JO - INFORMS Journal on Computing JF - INFORMS Journal on Computing Y1 - 2015///Winter2015 VL - 27 IS - 1 M3 - Article SP - 178 EP - 188 SN - 10919856 AB - This paper considers the minimum k-connected d-dominating set problem, which is a fault-tolerant generalization of the minimum connected dominating set (MCDS) problem. Three integer programming formulations based on vertex cuts are proposed (depending on whether d < k, d D k, or d > k) and their integer hulls are studied. The separation problem for the vertex-cut inequalities is a weighted vertex-connectivity problem and is polytime solvable, meaning that the LP relaxation can be solved in polytime despite having exponentially many constraints. A new class of valid inequalities-r-robust vertex-cut inequalities-is introduced and is shown to induce exponentially many facets. Finally, a lazy-constraint approach is shown to compare favorably with existing approaches for the MCDS problem (the case k D d D 1), and is in fact the fastest in literature for standard test instances. A key subroutine is an algorithm for finding an inclusion-wise minimal vertex cut in linear time. Computational results for 4k1 d5D421 151 421 251 431 351 441 45 are provided as well. [ABSTRACT FROM AUTHOR] AB - Copyright of INFORMS Journal on Computing is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTEGER programming KW - FAULT tolerance (Engineering) KW - SET theory KW - INEQUALITIES (Mathematics) KW - ROBUST control KW - connected dominating set KW - fault-tolerant KW - integer programming KW - k-connected m-dominating set N1 - Accession Number: 109480064; Buchanan, Austin 1; Email Address: buchanan@tamu.edu Je Sang Sung 1; Email Address: je.sung@tamu.edu Butenko, Sergiy 1; Email Address: butenko@tamu.edu Pasiliao, Eduardo L. 2; Email Address: eduardo.pasiliao@eglin.af.mil; Affiliation: 1: Industrial and Systems Engineering, Texas A&M University, College Station, Texas 77843 2: Air Force Research Laboratory, Munitions Directorate, Eglin, Florida 32542; Source Info: Winter2015, Vol. 27 Issue 1, p178; Subject Term: INTEGER programming; Subject Term: FAULT tolerance (Engineering); Subject Term: SET theory; Subject Term: INEQUALITIES (Mathematics); Subject Term: ROBUST control; Author-Supplied Keyword: connected dominating set; Author-Supplied Keyword: fault-tolerant; Author-Supplied Keyword: integer programming; Author-Supplied Keyword: k-connected m-dominating set; Number of Pages: 11p; Document Type: Article L3 - 10.1287/ijoc.2014.0619 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109480064&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ruiz, Oscar N. AU - Brown, Nicholas A. AU - Shiral Fernando, K.A. AU - Harruff-Miller, Barbara A. AU - Gunasekera, Thusitha S. AU - Bunker, Christopher E. T1 - Graphene oxide-based nanofilters efficiently remove bacteria from fuel. JO - International Biodeterioration & Biodegradation JF - International Biodeterioration & Biodegradation Y1 - 2015/01// VL - 97 M3 - Article SP - 168 EP - 178 SN - 09648305 AB - This study examined the applicability of graphene oxide (GO) nanomaterial as an efficient filtration medium for removing bacteria from fuel. It was shown that GO columns efficiently trapped bacteria and allowed fuel to flow freely. Scanning electron microscopy and fluorescent microscopy confirmed that bacterial cells were trapped within the GO filter matrix and binding strength tests showed that cells were strongly bound to the GO matrix. Additionally, silver-decorated GO (Ag-GO) in the form of free-standing films and coatings were shown to be antimicrobial against Gram positive and Gram negative bacteria. Ag-GO filter columns maintained the same filtration efficiency as undecorated GO, although some Ag-GO leached into the fuel. However, the positive results observed with Ag-GO present the possibility of combining GO with Ag-GO to increase the service life of the nanofilter by killing bacteria on contact. These findings significantly increase our understanding of the properties of GO and provide a new bioengineering application for the purification of fuel and non-polar solvents. [ABSTRACT FROM AUTHOR] AB - Copyright of International Biodeterioration & Biodegradation is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPHENE oxide KW - NANOSTRUCTURED materials KW - FILTERS & filtration KW - SCANNING electron microscopy KW - BACTERIAL cells KW - GRAM-negative bacteria KW - Antimicrobial KW - Biocompatible KW - Filtration KW - Fuels KW - Graphene oxide KW - Nanofilter KW - Nanomaterial KW - Silver-coated graphene oxide N1 - Accession Number: 100156684; Ruiz, Oscar N. 1; Email Address: oscar.ruiz@us.af.mil Brown, Nicholas A. 2 Shiral Fernando, K.A. 2 Harruff-Miller, Barbara A. 2 Gunasekera, Thusitha S. 2 Bunker, Christopher E. 1; Affiliation: 1: Air Force Research Laboratory, Aerospace Systems Directorate, Fuels and Energy Branch, Wright-Patterson AFB, OH 45433, USA 2: University of Dayton Research Institute, Dayton, OH 45469, USA; Source Info: Jan2015, Vol. 97, p168; Subject Term: GRAPHENE oxide; Subject Term: NANOSTRUCTURED materials; Subject Term: FILTERS & filtration; Subject Term: SCANNING electron microscopy; Subject Term: BACTERIAL cells; Subject Term: GRAM-negative bacteria; Author-Supplied Keyword: Antimicrobial; Author-Supplied Keyword: Biocompatible; Author-Supplied Keyword: Filtration; Author-Supplied Keyword: Fuels; Author-Supplied Keyword: Graphene oxide; Author-Supplied Keyword: Nanofilter; Author-Supplied Keyword: Nanomaterial; Author-Supplied Keyword: Silver-coated graphene oxide; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ibiod.2014.10.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100156684&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Leslie, Clifford J. AU - Boakye, Emmanuel E. AU - Keller, Kristin A. AU - Cinibulk, Michael K. T1 - Development and Characterization of Continuous SiC Fiber-Reinforced HfB2-Based UHTC Matrix Composites Using Polymer Impregnation and Slurry Infiltration Techniques. JO - International Journal of Applied Ceramic Technology JF - International Journal of Applied Ceramic Technology Y1 - 2015/01// VL - 12 IS - 1 M3 - Article SP - 235 EP - 244 SN - 1546542X AB - This paper discusses the development of continuous SiC fiber-reinforced HfB2-SiC composite laminates. A range of techniques, based on resin-based precursors and slurries, for infiltrating porous SiC preforms with HfB2 powder were developed. While resin-based precursors proved to be ineffective due to low HfB2 yield and poor adhesion, the slurry infiltration techniques were effective to varying degrees. The greatest pore filling and composite densities were achieved using pressure and vibration-assisted pressure infiltration techniques. SiCf/HfB2-SiC laminates were subsequently developed via lamination, cure and pyrolysis of fabrics using a HfB2-loaded polymeric SiC precursor, followed by HfB2 slurry infiltration and preceramic polymer infiltration and pyrolysis ( PIP). Repeated PIP processing, for 6-10 cycles, resulted in density increases, from the 3.03-3.22 g/cm3 range after HfB2 slurry infiltration, to 3.97-4.03 g/cm3 after PIP processing. Correspondingly, there was a decrease in open porosity from approximately 52% to less than 11%. The matrix consisted of discreet, lightly sintered HfB2 particles dispersed in SiC. The PIP SiC matrix was primarily nanocrystalline after 1300°C pyrolysis, but experienced grain growth with further heat treatment at 1600°C. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Applied Ceramic Technology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON carbide KW - FIBROUS composites KW - HAFNIUM compounds KW - EFFECT of high temperatures on metals KW - METALLIC composites KW - POLYMER-impregnated concrete KW - SLURRY KW - LAMINATED materials N1 - Accession Number: 100299255; Leslie, Clifford J. 1,2 Boakye, Emmanuel E. 1,3 Keller, Kristin A. 1,3 Cinibulk, Michael K. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base 2: National Research Council Research Associateship Program 3: UES, Inc.; Source Info: Jan2015, Vol. 12 Issue 1, p235; Subject Term: SILICON carbide; Subject Term: FIBROUS composites; Subject Term: HAFNIUM compounds; Subject Term: EFFECT of high temperatures on metals; Subject Term: METALLIC composites; Subject Term: POLYMER-impregnated concrete; Subject Term: SLURRY; Subject Term: LAMINATED materials; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1111/ijac.12279 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100299255&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carretta, Thomas R. AU - Rose, Mark R. AU - Barron, Laura G. T1 - Predictive Validity of UAS/RPA Sensor Operator Training Qualification Measures. JO - International Journal of Aviation Psychology JF - International Journal of Aviation Psychology Y1 - 2015/01//Jan-Mar2015 VL - 25 IS - 1 M3 - Article SP - 3 EP - 13 PB - Taylor & Francis Ltd SN - 10508414 AB - U.S. Air Force sensor operators (SOs) are enlisted aviators who work side-by-side with unmanned aerial systems/remotely piloted aircraft (UAS/RPA) pilots, providing assistance with all aspects of aircraft employment and sensor management. SO training qualification includes medical, citizenship, and security standards and aptitude requirements. The current study examined the validity of the Armed Services Vocational Aptitude Battery (ASVAB) for predicting grades of students in three SO courses. The ASVAB composites used for SO training qualification (General and Electronics) demonstrated good predictive validity for all three courses (corrected for range restriction and criterion unreliability): Basic Sensor Operator Course, n = 461,r= .541 and .535; MQ-1 Initial Qualification/Requalification Training, n = 430,r= .583 and .553; MQ-9 Initial Qualification/Requalification Training, n = 249,r= .357 and .334). Although current selection methods are effective, based on results of UAS/RPA job/task analyses, the Air Force is examining the utility of other measures to supplement the ASVAB. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aviation Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DRONE aircraft KW - AIR forces KW - PREDICTIVE validity KW - AIR pilots KW - REMOTE sensing KW - ARMED Services Vocational Aptitude Battery N1 - Accession Number: 100696747; Carretta, Thomas R. 1 Rose, Mark R. 2 Barron, Laura G. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, USA 2: Air Force Personnel Center, Randolph Air Force Base, Texas, USA; Source Info: Jan-Mar2015, Vol. 25 Issue 1, p3; Subject Term: DRONE aircraft; Subject Term: AIR forces; Subject Term: PREDICTIVE validity; Subject Term: AIR pilots; Subject Term: REMOTE sensing; Subject Term: ARMED Services Vocational Aptitude Battery; Number of Pages: 11p; Illustrations: 2 Charts; Document Type: Article L3 - 10.1080/10508414.2015.981487 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100696747&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - STARR, CLARISE R. AU - VILLAZANA, ELIA T. AU - CHAPLEAU, RICHARD R. AU - MASSERANG, DAVID L. T1 - Optimizing the Roche LightCycler(R) for Single-Tube Multiplexed RT-PCR Assays. JO - Journal of Clinical & Diagnostic Research JF - Journal of Clinical & Diagnostic Research Y1 - 2015/01// VL - 9 IS - 1 M3 - Article SP - 1 EP - 3 SN - 0973709X AB - The article discusses the Roche Diagnostics LightCycler® (LC) optimization for single-tube multiplexed reverse transcription-polymerase chain reaction (RT-PCR) assays which targets influenza A. Topics mentioned include the employing of a probe using the Biosearch Technologies fluorophore Pulsar® 650, the potential on detecting deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) and save sample, time and reagents, and the increased throughput for clinical detection. KW - REVERSE transcriptase polymerase chain reaction KW - INTERFERON gamma release tests KW - INFLUENZA A virus KW - FLUOROPHORES KW - RNA -- Molecular structure KW - DNA structure KW - Duplex molecular assay KW - Duplex PCR KW - LightCycler KW - Real-time RT-PCR N1 - Accession Number: 101632746; STARR, CLARISE R. 1; Email Address: clarise.starr@us.af.mil VILLAZANA, ELIA T. 1 CHAPLEAU, RICHARD R. 1 MASSERANG, DAVID L. 1; Affiliation: 1: Applied Technology & Genomics Center, United States Air Force School of Aerospace Medicine, 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB OH; Source Info: Jan2015, Vol. 9 Issue 1, p1; Subject Term: REVERSE transcriptase polymerase chain reaction; Subject Term: INTERFERON gamma release tests; Subject Term: INFLUENZA A virus; Subject Term: FLUOROPHORES; Subject Term: RNA -- Molecular structure; Subject Term: DNA structure; Author-Supplied Keyword: Duplex molecular assay; Author-Supplied Keyword: Duplex PCR; Author-Supplied Keyword: LightCycler; Author-Supplied Keyword: Real-time RT-PCR; Number of Pages: 3p; Document Type: Article L3 - 10.7860/JCDR/2015/9819.5361 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101632746&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Payne, Brian C. AU - Geppert, John M. AD - US Air Force Academy, Colorado Springs AD - U NE T1 - Health Care and the Cross-Section of US Stock Returns JO - Journal of Economics and Finance JF - Journal of Economics and Finance Y1 - 2015/01// VL - 39 IS - 1 SP - 153 EP - 170 SN - 10550925 N1 - Accession Number: 1485032; Keywords: Beta; Consumer; Cost; Expenditure; Health; Health Care; Households; Inflation; Stock Market; Stock Returns; Stocks; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 201503 N2 - Health care costs represent a large and growing component of business and consumer expenditures in the US. Medical inflation represents these costs, and it differs from aggregate inflation and other market factors with respect to its rate of growth, statistical properties and the extent to which it can be hedged by households and firms. Using multiple model specifications for the 25-year period from 1985 to 2009, we find medical inflation is robustly priced in the cross-section of US stock returns. It commands a risk premium of between 31 and 51 basis points per annum per unit change in beta. Medical inflation is also unique in that it represents the only inflationary component that robustly explains the cross-section of stock returns in this manner and is not subsumed by other common factors in the literature. These results quantify the health care industry's unique and significant role in the US economy and stock market, further rationalizing the substantial attention this industry receives. KW - Consumer Economics: Empirical Analysis D12 KW - Production; Cost; Capital; Capital, Total Factor, and Multifactor Productivity; Capacity D24 KW - Price Level; Inflation; Deflation E31 KW - Asset Pricing; Trading Volume; Bond Interest Rates G12 KW - Asset Pricing; Trading Volume; Bond Interest Rates G12 KW - Analysis of Health Care Markets I11 KW - Analysis of Health Care Markets I11 L3 - http://link.springer.com/journal/volumesAndIssues/12197 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1485032&site=ehost-live&scope=site UR - http://dx.doi.org/10.1007/s12197-013-9255-1 UR - http://link.springer.com/journal/volumesAndIssues/12197 DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Mathur, Vaibhav AU - Vangala, Shiva AU - Khoury, Jed T1 - Fabrication and characterization of an all optically addressed micromirror array. JO - Journal of Micro/Nanolithography, MEMS & MOEMS JF - Journal of Micro/Nanolithography, MEMS & MOEMS Y1 - 2015/01//Jan-Mar2015 VL - 14 IS - 1 M3 - Article SP - 015501-1 EP - 015501-9 SN - 19325150 AB - We describe the fabrication process for an optically addressed adaptive optics array. The device consists of a micromirror array cascaded directly on wafer fused gallium arsenide (GaAs)-gallium phosphide (GaP) photodiodes. Optically addressing a photodiode generates a photocurrent which in turn causes a voltage drop across the cascaded mirror via an integrated thin film resistor. This architecture allows parallel optical addressing of individual elements without the need for wire bonding each pixel, which can enable higher density segmented type arrays. We first describe a fabrication process for releasing a free-standing array of low stress SixN micromirrors on an indium phosphide (InP) support substrate. We then present a process for transferring GaAs p-i-n photodiodes on a transparent GaP support substrate using a specially designed wafer fusion fixture. The two samples when stacked together and electrically connected via a specially formulated and patterned semiconductive SU-8 resist form the final device. We report mirror displacements of up to 500 nm using this technique while requiring an optical signal as low as 150 μW. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Micro/Nanolithography, MEMS & MOEMS is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTROMECHANICAL systems KW - THIN film resistors KW - INTEGRATED circuits -- Wafer-scale integration KW - ADAPTIVE optics KW - MICROMIRRORS KW - GALLIUM arsenide KW - adaptive optics KW - MEMS KW - thin film resistors KW - wafer fusion N1 - Accession Number: 102146261; Mathur, Vaibhav 1; Email Address: vaibhav_mathur@yahoo.com Vangala, Shiva 2,3 Khoury, Jed 3; Affiliation: 1: University of Massachusetts Lowell, Photonics Center, Lowell, Massachusetts 01854, United States 2: Solid State Scientific Corporation, Nashua, New Hampshire 03060, United States 3: Air Force Research Laboratory, Sensors Directorate, WPAFB, Ohio 45433, United States; Source Info: Jan-Mar2015, Vol. 14 Issue 1, p015501-1; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: THIN film resistors; Subject Term: INTEGRATED circuits -- Wafer-scale integration; Subject Term: ADAPTIVE optics; Subject Term: MICROMIRRORS; Subject Term: GALLIUM arsenide; Author-Supplied Keyword: adaptive optics; Author-Supplied Keyword: MEMS; Author-Supplied Keyword: thin film resistors; Author-Supplied Keyword: wafer fusion; Number of Pages: 9p; Document Type: Article L3 - 10.1117/1.JMM.14.1.015501 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102146261&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Herzog, Catherine M. AU - Chao, Susan Y. AU - Eilerman, Patricia A. AU - Luce, Beverly K. AU - Carnahan, David H. T1 - Metabolic Syndrome in the Military Health System Based on Electronic Health Data, 2009-2012. JO - Military Medicine JF - Military Medicine Y1 - 2015/01// VL - 180 IS - 1 M3 - Article SP - 83 EP - 90 PB - AMSUS SN - 00264075 AB - Metabolic syndrome prevalence in the United States rose from 27% to 34.2% between 1999-2000 and 1999-2006. However, prevalence has not been determined in the Military Health System. This retrospective descriptive study included enrolled Military Health System adults during fiscal years 2009-2012. We explored three populations (nonactive duty, active duty, and Air Force active duty) and their metabolic syndrome components (body mass index or waist circumference, blood glucose test, triglyceride, high density lipoprotein, and blood pressure). The active duty sample (who had all five components measured) was representative of its population, but the nonactive duty sample was not. Therefore, we reported component-wise prevalence for both nonactive and active duty populations, but only reported prevalence of metabolic syndrome for active duty. A decreasing trend, greater in men, was seen. Crude prevalence in 2012 was higher among men and highest among males and females aged 45-64. Only Air Force active duty data contained waist circumference measurements, enabling comparison to the United States. This subgroup prevalence was significantly lower than the United States prevalence in 2010 for both genders in every age group. Although decreasing metabolic syndrome prevalence is promising, prevalence is still high and future research should explore policies to help lower the prevalence. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METABOLIC syndrome KW - MILITARY personnel -- United States KW - HEALTH KW - BODY mass index KW - TRIGLYCERIDES KW - BLOOD pressure N1 - Accession Number: 100389765; Herzog, Catherine M. 1 Chao, Susan Y. 1 Eilerman, Patricia A. 1 Luce, Beverly K. 1 Carnahan, David H. 1; Affiliation: 1: United States Air Force Medical Support Agency, Healthcare Informatics Division. 3515 S General McMullen Suite 200, San Antonio, TX 78226; Source Info: Jan2015, Vol. 180 Issue 1, p83; Subject Term: METABOLIC syndrome; Subject Term: MILITARY personnel -- United States; Subject Term: HEALTH; Subject Term: BODY mass index; Subject Term: TRIGLYCERIDES; Subject Term: BLOOD pressure; Number of Pages: 8p; Illustrations: 5 Charts; Document Type: Article L3 - 10.7205/MILMED-D-14-00039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100389765&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - FIKSEL, JOSEPH AU - POLYVIOU, MIKAELLA AU - CROXTON, KEELY L. AU - PETTIT, TIMOTHY J. T1 - From Risk to Resilience: Learning to Deal With Disruption. JO - MIT Sloan Management Review JF - MIT Sloan Management Review Y1 - 2015///Winter2015 VL - 56 IS - 2 M3 - Article SP - 79 EP - 86 SN - 15329194 AB - The article discusses the impact of several factors to the business operation including volatility, low costs and natural disaster wherein it can cause significant financial losses for companies and may affect the shareholder value. It highlights the popularity of enterprise risk management (ERM) which help enhance domestic job creation and business revenue. It cites the importance to set a standard in managing a supply chain. KW - TREND analysis in business KW - RISK management in business KW - BUSINESS losses KW - EMPLOYMENT (Economic theory) KW - ORGANIZATIONAL performance KW - STANDARD-setting organizations N1 - Accession Number: 102487160; FIKSEL, JOSEPH 1; Email Address: smrfeedback@mit.edu.; POLYVIOU, MIKAELLA; Email Address: smrfeedback@mit.edu.; CROXTON, KEELY L. 2; Email Address: smrfeedback@mit.edu.; PETTIT, TIMOTHY J. 3; Email Address: smrfeedback@mit.edu.; Affiliations: 1: Executive director, Center for Resilience, Ohio State University in Columbus, Ohio; 2: Associate professor of logistics at Ohio State's Fisher College of Business; 3: Assistant professor of management, United States Air Force Academy in Colorado; Issue Info: Winter2015, Vol. 56 Issue 2, p79; Thesaurus Term: TREND analysis in business; Thesaurus Term: RISK management in business; Thesaurus Term: BUSINESS losses; Thesaurus Term: EMPLOYMENT (Economic theory); Thesaurus Term: ORGANIZATIONAL performance; Thesaurus Term: STANDARD-setting organizations; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=102487160&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Pritchett, Timothy M. AU - Ferry, Michael J. AU - Mott, Andrew G. AU - IIIShensky, William AU - Haley, Joy E. AU - Liu, Rui AU - Sun, Wenfang T1 - Long-lifetime reverse saturable absorption in a bipyridyl platinum(II) complex bearing naphthalimidylethynyl-substituted fluorenylacetylide ligands. JO - Optical Materials JF - Optical Materials Y1 - 2015/01// VL - 39 M3 - Article SP - 195 EP - 198 SN - 09253467 AB - By fitting femtosecond transient difference absorption time series at multiple wavelengths, the singlet excited-state lifetime of a particular platinum(II) 2,2′-bipyridyl complex bearing naphthalimidylethynyl-substituted fluorenyl-acetylide ligands was determined to be 83.5 ± 39 ps in toluene solution. A triplet quantum yield of 0.06 was measured using relative actinometry. Excited-state absorption cross sections of 5.6 × 10 −17 cm 2 (singlet) and 7.8 × 10 −16 cm 2 (triplet) at 532 nm were obtained by using a five-level dynamic model to fit open-aperture Z scans at picosecond and nanosecond pulse widths and a variety of pulse energies. Most significantly, fits of nanosecond transient difference absorption decay data yield a value of 16.3 μs for the triplet excited-state lifetime of the complex in deoxygenated toluene solution, longer by a factor of almost 20 than the lifetime of the analogous complex with benzothiazolyl-substituted ligands. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSORPTION KW - METAL complexes KW - BIPYRIDINE KW - ACETYLIDES KW - LIGANDS -- Analysis KW - TOLUENE KW - Reverse saturable absorption KW - Z scan N1 - Accession Number: 100080796; Pritchett, Timothy M. 1; Email Address: timothy.m.pritchett.civ@mail.mil Ferry, Michael J. 1 Mott, Andrew G. 1 IIIShensky, William 1 Haley, Joy E. 2 Liu, Rui 3 Sun, Wenfang 3; Affiliation: 1: U.S. Army Research Laboratory, Attn: RDRL-SEE-L, 2800 Powder Mill Road, Adelphi, MD 20783-1138, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA 3: Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108-6050, USA; Source Info: Jan2015, Vol. 39, p195; Subject Term: ABSORPTION; Subject Term: METAL complexes; Subject Term: BIPYRIDINE; Subject Term: ACETYLIDES; Subject Term: LIGANDS -- Analysis; Subject Term: TOLUENE; Author-Supplied Keyword: Reverse saturable absorption; Author-Supplied Keyword: Z scan; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.optmat.2014.11.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100080796&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lan, Yucheng AU - Wang, Hui AU - Skula, Nitin AU - Chen, Xiaoyuan AU - Lu, Yalin AU - Chen, Gang AU - Ren, Zhifeng T1 - Determination of Thermal History by Photoluminescence of Core-Shelled Quantum Dots Going Through Heating Events. JO - Particle & Particle Systems Characterization JF - Particle & Particle Systems Characterization Y1 - 2015/01// VL - 32 IS - 1 M3 - Article SP - 65 EP - 71 SN - 09340866 AB - A kind of novel thermal history nanosensors are theoretically designed and experimentally demonstrated to permanently record thermal events. The photoluminescence (PL) spectrum of core-shelled quantum dots (QDs) CdSe/ZnS irreversibly shifts with heating histories (temperature and duration) of thermal events. The induced PL shift of the QDs CdSe/ZnS is employed to permanently record thermal histories. We further model a kind of thermal history nanosensor based on the thermal-induced phenomena of core-shelled QDs to permanently record thermal histories at microscale and demonstrate to reconstruct temperature and duration of heating events simultaneously from PL spectra of the QDs. The physical mechanism of the sensors is discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Particle & Particle Systems Characterization is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM dots KW - PHOTOLUMINESCENCE KW - HEATING KW - MICRO & nano-engineered sensors KW - THERMOMETRY KW - ZINC sulfide KW - CADMIUM selenide KW - quantum dots KW - sensors KW - spectrum KW - thermometry N1 - Accession Number: 100373121; Lan, Yucheng 1,2 Wang, Hui 1 Skula, Nitin 3 Chen, Xiaoyuan 3 Lu, Yalin 4 Chen, Gang 3 Ren, Zhifeng 1; Affiliation: 1: Department of Physics and Texas Center for Superconductivity, University of Houston 2: Department of Physics and Engineering Physics, Morgan State University 3: Department of Mechanical Engineering, Massachusetts Institute of Technology 4: Laser Optics Research Center, US Air Force Academy; Source Info: Jan2015, Vol. 32 Issue 1, p65; Subject Term: QUANTUM dots; Subject Term: PHOTOLUMINESCENCE; Subject Term: HEATING; Subject Term: MICRO & nano-engineered sensors; Subject Term: THERMOMETRY; Subject Term: ZINC sulfide; Subject Term: CADMIUM selenide; Author-Supplied Keyword: quantum dots; Author-Supplied Keyword: sensors; Author-Supplied Keyword: spectrum; Author-Supplied Keyword: thermometry; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1002/ppsc.201400100 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100373121&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barnes, Caleb J. AU - Visbal, Miguel R. AU - Gordnier, Raymond E. T1 - Analysis of streamwise-oriented vortex interactions for two wings in close proximity. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2015/01// VL - 27 IS - 1 M3 - Article SP - 1 EP - 22 PB - American Institute of Physics SN - 10706631 AB - This investigation addresses the impingement of the trailing vortex provided by a leader-wing upon a follower-wing operating in close proximity. Exploration of the relative spacing between the two wings reveals several distinct flow regimes occur within a small range of lateral positions of the incident vortex. These changes effectively alter the evolution of the follower-wing wake via mutual induction between the incident and trailing vortices. Several unsteady mechanisms impact the general flow field in each regime. The incident vortex for an inboard impingement rapidly decays over the wing due to transition to turbulence. A tip-aligned vortex results in a highly unsteady interaction and generates enhanced surface pressure fluctuations beneath the tip vortex. Placing the incident vortex outboard elicits mutual instability between the leader and follower-wing trailing vortices. While lift-enhancement was found to be dominated by an inviscid increase in effective angle of attack, viscous effects in the near-tip region alter the local surface force distribution and influence the rolling moment coefficient. These flow variations which occur over a small range of lateral positions could generate buffeting loads in the presence of a wandering streamwise vortex. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VORTEX motion KW - SURFACE pressure KW - FLUCTUATIONS (Physics) KW - ROLLING (Aerodynamics) KW - TURBULENCE N1 - Accession Number: 100780109; Barnes, Caleb J. 1; Email Address: caleb.barnes.1@us.af.mil Visbal, Miguel R. 1 Gordnier, Raymond E. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 2015, Vol. 27 Issue 1, p1; Subject Term: VORTEX motion; Subject Term: SURFACE pressure; Subject Term: FLUCTUATIONS (Physics); Subject Term: ROLLING (Aerodynamics); Subject Term: TURBULENCE; Number of Pages: 22p; Illustrations: 2 Color Photographs, 6 Charts, 15 Graphs; Document Type: Article L3 - 10.1063/1.4905479 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100780109&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Oganesov, Armen AU - Vahala, George AU - Vahala, Linda AU - Yepez, Jeffrey AU - Soe, Min AU - Zhang, Bo T1 - Unitary quantum lattice gas algorithm generated from the Dirac collision operator for 1D soliton–soliton collisions. JO - Radiation Effects & Defects in Solids: Incorporating Plasma Techniques & Plasma Phenomena JF - Radiation Effects & Defects in Solids: Incorporating Plasma Techniques & Plasma Phenomena Y1 - 2015/01// VL - 170 IS - 1 M3 - Article SP - 55 EP - 64 PB - Taylor & Francis Ltd SN - 10420150 AB - A new unitary quantum lattice gas (QLG) algorithm is proposed as a mesoscopic unitary perturbative representation of the mean field Gross Pitaevskii equation for Bose–Einstein Condensates (BECs). This consists of an interleaved sequence of unitary collide-stream operators and is tested on the 1D nonlinear Schrödinger (NLS) equation since exact soliton solutions are well known. An earlier QLG algorithm, based on thecollision operator has been found to have limited application to spinor-BECs. Here, a new unitary collision operator, based on the recent QLG of Yepez for the Dirac particle, is used to model the 1D NLS soliton–soliton problem. It is found that this new unitary algorithm can handle parameters (soliton amplitudes and speeds) a factor of over 20 greater than those under the previousalgorithm.[Re: (v.07) To be submitted to special issue ‘Plasma and Fluid Dynamics: Computational, Experimental and Theoretical Advancement’] [ABSTRACT FROM PUBLISHER] AB - Copyright of Radiation Effects & Defects in Solids: Incorporating Plasma Techniques & Plasma Phenomena is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LATTICE gas KW - QUANTUM computing KW - BOSE-Einstein condensation KW - SUPERFLUIDITY KW - GROSS-Pitaevskii equations KW - OCEAN waves KW - Bose–Einstein Condensate KW - Gross–Pitaevskii equation KW - quantum algorithm KW - quantum computation KW - quantum Kelvin wave cascade KW - quantum lattice gas KW - quantum turbulence KW - quantum vortex KW - superfluid N1 - Accession Number: 101736649; Oganesov, Armen 1 Vahala, George 1 Vahala, Linda 2 Yepez, Jeffrey 3,4 Soe, Min 5 Zhang, Bo 6; Affiliation: 1: Department of Physics, William & Mary, Williamsburg, VA23185, USA 2: Department of Electrical & Computer Engineering, Old Dominion University, Norfolk, VA23529, USA 3: Air Force Research Laboratory/Directed Energy, Kihei, HI96753, USA 4: Department of Physics and Astronomy, University of Hawai‘i at Manoa Watanabe Hall, 2505 Correa Road,Honolulu, HI96822, USA 5: Department of Mathematics and Physical Sciences, Rogers State University, Claremore, OK 74017, USA 6: Institute for Fusion Research, University of Texas, Austin, TX78712, USA; Source Info: Jan2015, Vol. 170 Issue 1, p55; Subject Term: LATTICE gas; Subject Term: QUANTUM computing; Subject Term: BOSE-Einstein condensation; Subject Term: SUPERFLUIDITY; Subject Term: GROSS-Pitaevskii equations; Subject Term: OCEAN waves; Author-Supplied Keyword: Bose–Einstein Condensate; Author-Supplied Keyword: Gross–Pitaevskii equation; Author-Supplied Keyword: quantum algorithm; Author-Supplied Keyword: quantum computation; Author-Supplied Keyword: quantum Kelvin wave cascade; Author-Supplied Keyword: quantum lattice gas; Author-Supplied Keyword: quantum turbulence; Author-Supplied Keyword: quantum vortex; Author-Supplied Keyword: superfluid; Number of Pages: 10p; Document Type: Article L3 - 10.1080/10420150.2014.988625 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101736649&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fu, Katherine AU - Murphy, Jeremy AU - Yang, Maria AU - Otto, Kevin AU - Jensen, Dan AU - Wood, Kristin T1 - Design-by-analogy: experimental evaluation of a functional analogy search methodology for concept generation improvement. JO - Research in Engineering Design JF - Research in Engineering Design Y1 - 2015/01// VL - 26 IS - 1 M3 - Article SP - 77 EP - 95 PB - Springer Science & Business Media B.V. SN - 09349839 AB - Design-by-analogy is a growing field of study and practice, due to its power to augment and extend traditional concept generation methods by expanding the set of generated ideas using similarity relationships from solutions to analogous problems. This paper presents the results of experimentally testing a new method for extracting functional analogies from general data sources, such as patent databases, to assist designers in systematically seeking and identifying analogies. In summary, the approach produces significantly improved results on the novelty of solutions generated and no significant change in the total quantity of solutions generated. Computationally, this design-by-analogy facilitation methodology uses a novel functional vector space representation to quantify the functional similarity between represented design problems and, in this case, patent descriptions of products. The mapping of the patents into the functional analogous words enables the generation of functionally relevant novel ideas that can be customized in various ways. Overall, this approach provides functionally relevant novel sources of design-by-analogy inspiration to designers and design teams. [ABSTRACT FROM AUTHOR] AB - Copyright of Research in Engineering Design is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENGINEERING design KW - FUNCTIONAL analysis KW - SYSTEMS design KW - DATA analysis KW - VECTOR spaces KW - Design cognition KW - Design-by-analogy KW - Function-based analogy N1 - Accession Number: 100208381; Fu, Katherine; Email Address: kfu@me.gatech.edu Murphy, Jeremy 1 Yang, Maria 2 Otto, Kevin 3 Jensen, Dan 4 Wood, Kristin 3; Affiliation: 1: Schlumberger Limited, Sugarland USA 2: Massachusetts Institute of Technology, Cambridge USA 3: Engineering Product Development Pillar, Singapore University of Technology and Design, Singapore Republic of Singapore 4: United States Air Force Academy, Colorado Springs USA; Source Info: Jan2015, Vol. 26 Issue 1, p77; Subject Term: ENGINEERING design; Subject Term: FUNCTIONAL analysis; Subject Term: SYSTEMS design; Subject Term: DATA analysis; Subject Term: VECTOR spaces; Author-Supplied Keyword: Design cognition; Author-Supplied Keyword: Design-by-analogy; Author-Supplied Keyword: Function-based analogy; NAICS/Industry Codes: 541330 Engineering Services; Number of Pages: 19p; Document Type: Article L3 - 10.1007/s00163-014-0186-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100208381&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CHAP ID - 2015-10759-013 AN - 2015-10759-013 AU - Warm, Joel S. AU - Finomore, Victor S. AU - Vidulich, Michael A. AU - Funke, Matthew E. ED - Hoffman, Robert R. ED - Hancock, Peter A. ED - Scerbo, Mark W. ED - Parasuraman, Raja ED - Szalma, James L. ED - Hoffman, Robert R., (Ed) ED - Hancock, Peter A., (Ed) ED - Scerbo, Mark W., (Ed) ED - Parasuraman, Raja, (Ed) ED - Szalma, James L., (Ed) T1 - Vigilance: A perceptual challenge. T2 - The Cambridge handbook of applied perception research, Vol. I. T3 - Cambridge handbooks in psychology Y1 - 2015/// SP - 241 EP - 283 CY - New York, NY, US PB - Cambridge University Press SN - 978-1-107-07290-9 SN - 978-1-107-09640-0 SN - 978-1-139-99125-4 N1 - Accession Number: 2015-10759-013. Partial author list: First Author & Affiliation: Warm, Joel S.; Air Force Research Laboratory, OH, US. Release Date: 20150413. Correction Date: 20150720. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 978-1-107-07290-9, Hardcover; 978-1-107-09640-0, Set; 978-1-139-99125-4, Set. Language: English. Major Descriptor: Applied Psychology; Observers; Sustained Attention; Vigilance. Classification: Intelligent Systems (4100). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 43. AB - Vigilance or sustained attention/vigilant attention refers to the ability of observers to maintain their focus of attention and remain alert to stimuli over prolonged periods. A variety of psychophysical factors affect the quality of vigilance performance and vigilance tasks are mentally demanding and stressful. After considering the historical roots and current importance of vigilance research, this chapter will describe the psychophysical, workload, and stress elements associated with the maintenance of sustained attention and consider recent developments in theoretical models used to account for vigilance performance. The chapter will conclude with some suggestions for the translation of basic research knowledge to vigilance performance in operational settings. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - vigilance performance KW - sustained attention KW - applied perception KW - 2015 KW - Applied Psychology KW - Observers KW - Sustained Attention KW - Vigilance KW - 2015 DO - 10.1017/CBO9780511973017.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-10759-013&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Meher, S. AU - Nandwana, P. AU - Rojhirunsakool, T. AU - Tiley, J. AU - Banerjee, R. T1 - Probing the crystallography of ordered Phases by coupling of orientation microscopy with atom probe tomography. JO - Ultramicroscopy JF - Ultramicroscopy Y1 - 2015/01// VL - 148 M3 - Article SP - 67 EP - 74 SN - 03043991 AB - The determination of atomic scale structural and compositional information using atom probe tomography is currently limited to elemental solids and dilute alloys. In the present article, a unique coupling of orientation microscopy and atom probe tomography successfully facilitates the crystallographic study of non-dilute alloy systems, with high evaporation fields. This reproducible methodology affords a new perspective to the conventional atom probe tomography of ordered precipitate strengthened superalloys. The high accuracy in crystallographic site-specific sample preparation results in high spatial resolution in APT, which has been demonstrated in Co-base superalloys. The practical applications of this technique can be extended to accurately characterize the nature of buried order/disorder interfaces at the atomic scale, as well as the site occupancies associated with different solute atoms in multi-component superalloys. [ABSTRACT FROM AUTHOR] AB - Copyright of Ultramicroscopy is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DILUTE alloys KW - CRYSTALLOGRAPHY KW - ATOM-probe tomography KW - HEAT resistant alloys KW - SAMPLE preparation (Chemistry) KW - RESOLUTION (Optics) KW - MICROSCOPY KW - APT KW - EBSD KW - Field evaporation KW - Ordered phases KW - SDM KW - Superalloys N1 - Accession Number: 99791954; Meher, S. 1 Nandwana, P. 1 Rojhirunsakool, T. 1 Tiley, J. 2 Banerjee, R. 1; Email Address: rajarshi.banerjee@unt.edu; Affiliation: 1: Center for Advanced Research and Technology and Department of Materials Science and Engineering, University of North Texas, Denton, TX, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH, USA; Source Info: Jan2015, Vol. 148, p67; Subject Term: DILUTE alloys; Subject Term: CRYSTALLOGRAPHY; Subject Term: ATOM-probe tomography; Subject Term: HEAT resistant alloys; Subject Term: SAMPLE preparation (Chemistry); Subject Term: RESOLUTION (Optics); Subject Term: MICROSCOPY; Author-Supplied Keyword: APT; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: Field evaporation; Author-Supplied Keyword: Ordered phases; Author-Supplied Keyword: SDM; Author-Supplied Keyword: Superalloys; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.ultramic.2014.09.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99791954&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - BONNER, JR., THOMAS T1 - Front Lines. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2015/01// VL - 27 M3 - Short Story SP - 1 EP - 5 PB - US Air Force Academy English Department SN - 10466967 KW - ARMIES KW - BONNER, Thomas KW - FRONT Lines (Short story) N1 - Accession Number: 115168569; BONNER, JR., THOMAS 1; Affiliation: 1: Professor Emeritus at Xavier University of Louisiana, twice served as Distinguished Visiting Professor at the United States Air Force Academy; Source Info: 2015, Vol. 27, p1; Subject Term: ARMIES; Reviews & Products: FRONT Lines (Short story); People: BONNER, Thomas; Number of Pages: 5p; Document Type: Short Story UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=115168569&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CHAP ID - 2015-21472-014 AN - 2015-21472-014 AU - Ghahramanlou-Holloway, Marjan AU - George, Brianne AU - Carreno-Ponce, Jaime T. AU - Garrick, Jacqueline ED - Ritchie, Elspeth Cameron ED - Naclerio, Anne L. ED - Ritchie, Elspeth Cameron, (Ed) ED - Naclerio, Anne L., (Ed) T1 - Suicide-related ideation and behaviors in military women. T2 - Women at war. Y1 - 2015/// SP - 243 EP - 265 CY - New York, NY, US PB - Oxford University Press SN - 978-0-19-934453-6 N1 - Accession Number: 2015-21472-014. Partial author list: First Author & Affiliation: Ghahramanlou-Holloway, Marjan; Department of Medical and Clinical Psychology, Uniformed Services University of the Health Sciences (USUHS), Bethesda, MD, US. Release Date: 20150803. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-0-19-934453-6, Hardcover. Language: English. Major Descriptor: Human Females; Military Personnel; Suicide. Minor Descriptor: Ideation. Classification: Behavior Disorders & Antisocial Behavior (3230); Military Psychology (3800). Population: Human (10); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 23. AB - This chapter provides an overview of suicide-related ideation and behaviors among military women and a series of recommendations for behavioral healthcare providers and scientists. From recruits to veterans, women are expanding their ranks in our nation's military history. As the nature of women's involvement in the military evolves, providers across various Department of Defense (DoD), Veteran's Administration, and civilian healthcare settings have an increasing responsibility to recognize, understand, and respond to the psychological issues these women encounter. While efforts to address behavioral healthcare needs of military Service members as a whole have been outstanding, there is still a great deal of mental health research disparity in relation to issues pertaining to military women. Providers, researchers, and policymakers within the DoD are strongly encouraged to pay closer attention to the unique needs of this subgroup. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - military women KW - behavioral healthcare KW - suicide-related ideation KW - 2015 KW - Human Females KW - Military Personnel KW - Suicide KW - Ideation KW - 2015 DO - 10.1093/med/9780199344536.003.0014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-21472-014&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-04375-003 AN - 2015-04375-003 AU - Carretta, Thomas R. AU - Rose, Mark R. AU - Barron, Laura G. T1 - Predictive validity of UAS/RPA sensor operator training qualification measures. JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 2015/01// VL - 25 IS - 1 SP - 3 EP - 13 CY - United Kingdom PB - Taylor & Francis SN - 1050-8414 SN - 1532-7108 AD - Carretta, Thomas R., 711 HPW/RHCI, 2210 8th Street, Area B, Building 146, Room 122, Wright-Patterson AFB, OH, US, 45433-7511 N1 - Accession Number: 2015-04375-003. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Carretta, Thomas R.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Other Publishers: Lawrence Erlbaum. Release Date: 20150316. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Military Personnel; Military Training; Psychometrics; Statistical Validity. Minor Descriptor: Test Reliability. Classification: Occupational & Employment Testing (2228); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Armed Services Vocational Aptitude Battery DOI: 10.1037/t11801-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 11. Issue Publication Date: Jan, 2015. AB - U.S. Air Force sensor operators (SOs) are enlisted aviators who work side-by-side with unmanned aerial systems/remotely piloted aircraft (UAS/RPA) pilots, providing assistance with all aspects of aircraft employment and sensor management. SO training qualification includes medical, citizenship, and security standards and aptitude requirements. The current study examined the validity of the Armed Services Vocational Aptitude Battery (ASVAB) for predicting grades of students in three SO courses. The ASVAB composites used for SO training qualification (General and Electronics) demonstrated good predictive validity for all three courses (corrected for range restriction and criterion unreliability): Basic Sensor Operator Course, n = 461, r = .541 and .535; MQ-1 Initial Qualification/Requalification Training, n = 430, r = .583 and .553; MQ-9 Initial Qualification/Requalification Training, n = 249, r = .357 and .334). Although current selection methods are effective, based on results of UAS/RPA job/task analyses, the Air Force is examining the utility of other measures to supplement the ASVAB. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - Armed Services Vocational Aptitude Battery KW - predictive validity KW - psychometrics KW - Air Force sensor operator training KW - 2015 KW - Air Force Personnel KW - Military Personnel KW - Military Training KW - Psychometrics KW - Statistical Validity KW - Test Reliability KW - 2015 DO - 10.1080/10508414.2015.981487 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-04375-003&site=ehost-live&scope=site UR - thomas.carretta@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Golden, E. M. AU - Basun, S. A. AU - Grabar, A. A. AU - Stoika, I. M. AU - Giles, N. C. AU - Evans, D. R. AU - Halliburton, L. E. T1 - Sulfur vacancies in photorefractive Sn2P2S6 crystals. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2014/12/28/ VL - 116 IS - 24 M3 - Article SP - 244107-1 EP - 244107-8 PB - American Institute of Physics SN - 00218979 AB - A photoinduced electron paramagnetic resonance (EPR) spectrum in single crystals of Sn2P2S6 (SPS) is assigned to an electron trapped at a sulfur vacancy. These vacancies are unintentionally present in undoped SPS crystals and are expected to play an important role in the photorefractive behavior of the material. Nonparamagnetic sulfur vacancies are formed during the initial growth of the crystal. Subsequent illumination below 100K with 442 nm laser light easily converts these vacancies to EPR-active defects. The resulting S=1/2 spectrum shows well-resolved and nearly isotropic hyperfine interactions with two P ions and two Sn ions. Partially resolved interactions with four additional neighboring Sn ions are also observed. Principal values of the g matrix are 1.9700, 1.8946, and 1.9006, with the corresponding principal axes along the a, b, and c directions in the crystal. The isotropic parts of the two primary 31P hyperfine interactions are 19.5 and 32.6MHz and the isotropic parts of the two primary Sn hyperfine interactions are 860 and 1320MHz (the latter values are each an average for 117Sn and 119Sn). These hyperfine results suggest that singly ionized sulfur vacancies have a diffuse wave function in SPS crystals, and thus are shallow donors. Before illumination, sulfur vacancies are in the doubly ionized charge state because of compensation by unidentified acceptors. They then trap an electron during illumination. The EPR spectrum from the sulfur vacancy is destroyed when a crystal is heated above 120K in the dark and reappears when the crystal is illuminated again at low temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON paramagnetic resonance KW - PHOTOINDUCED electron transfer KW - CHALCOGENS KW - CRYSTAL gazing KW - CRYSTALLINITY N1 - Accession Number: 100226418; Golden, E. M. 1 Basun, S. A. 2,3 Grabar, A. A. 4 Stoika, I. M. 4 Giles, N. C. 1 Evans, D. R. 2 Halliburton, L. E. 3,5; Email Address: Larry.Halliburton@mail.wvu.edu; Affiliation: 1: Department of Engineering Physics, Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 3: Azimuth Corporation, 4134 Linden Avenue, Suite 300, Dayton, Ohio 45431, USA 4: Institute of Solid State Physics and Chemistry, Uzhgorod National University, 88 000 Uzhgorod, Ukraine 5: Department of Physics and Astronomy, West Virginia University, Morgantown, West Virginia 26506, USA; Source Info: 12/28/2014, Vol. 116 Issue 24, p244107-1; Subject Term: ELECTRON paramagnetic resonance; Subject Term: PHOTOINDUCED electron transfer; Subject Term: CHALCOGENS; Subject Term: CRYSTAL gazing; Subject Term: CRYSTALLINITY; Number of Pages: 8p; Illustrations: 2 Diagrams, 3 Charts, 6 Graphs; Document Type: Article L3 - 10.1063/1.4904927 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100226418&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Borkar, Tushar AU - Nag, Soumya AU - Ren, Yang AU - Tiley, Jaimie AU - Banerjee, Rajarshi T1 - Reactive spark plasma sintering (SPS) of nitride reinforced titanium alloy composites. JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2014/12/25/ VL - 617 M3 - Article SP - 933 EP - 945 SN - 09258388 AB - Coupled in situ alloying and nitridation of titanium–vanadium alloys, has been achieved by introducing reactive nitrogen gas during the spark plasma sintering (SPS) of blended titanium and vanadium elemental powders, leading to a new class of nitride reinforced titanium alloy composites. The resulting microstructure includes precipitates of the δ-TiN phase with the NaCl structure, equiaxed (or globular) precipitates of a nitrogen enriched hcp α(Ti,N) phase with a c/a ratio more than what is expected for pure hcp Ti, and fine scale plate-shaped precipitates of hcp α-Ti, distributed within a bcc β matrix. During SPS processing, the δ-TiN phase appears to form at a temperature of 1400 °C, while only hcp α(Ti,N) and α-Ti phases form at lower processing temperatures. Consequently, the highest microhardness is exhibited by the composite processed at 1400 °C while those processed at 1300 °C or below exhibit lower values. Processing at temperatures below 1300 °C, resulted in an incomplete alloying of the blend of titanium and vanadium powders. These δ-TiN precipitates act as heterogeneous nucleation sites for the α(Ti,N) precipitates that appear to engulf and exhibit an orientation relationship with the nitride phase at the center. Furthermore, fine scale α-Ti plates are precipitated within the nitride precipitates, presumably resulting from the retrograde solubility of nitrogen in titanium. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SINTERING KW - TITANIUM-vanadium alloys KW - NITRIDES KW - COMPOSITE materials KW - NITRIDATION KW - REACTIVE nitrogen species KW - MICROSTRUCTURE KW - Metal–matrix composites (MMCs) KW - Microstructure KW - Sintering KW - Synchrotron radiation KW - Transmission electron microscopy (TEM) N1 - Accession Number: 98575383; Borkar, Tushar 1 Nag, Soumya 1,2 Ren, Yang 3 Tiley, Jaimie 4 Banerjee, Rajarshi 1; Email Address: Rajarshi.Banerjee@unt.edu; Affiliation: 1: Center for Advanced Research and Technology and Department of Materials Science and Engineering, University of North Texas, Denton 76203, USA 2: CMT Structural and Functional Metals Lab, GE Global Research Center-Niskayuna, NY 12309, USA 3: X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, IL 60439, USA 4: Materials and Manufacturing Directorate, Air Force Research laboratory, Dayton, OH 45433, USA; Source Info: Dec2014, Vol. 617, p933; Subject Term: SINTERING; Subject Term: TITANIUM-vanadium alloys; Subject Term: NITRIDES; Subject Term: COMPOSITE materials; Subject Term: NITRIDATION; Subject Term: REACTIVE nitrogen species; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: Metal–matrix composites (MMCs); Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Sintering; Author-Supplied Keyword: Synchrotron radiation; Author-Supplied Keyword: Transmission electron microscopy (TEM); NAICS/Industry Codes: 212210 Iron Ore Mining; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.jallcom.2014.08.049 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98575383&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sergei Shenogin AU - Jonghoon Lee AU - Voevodin, Andrey A. AU - Roy, Ajit K. T1 - The effect of molecular mobility on electronic transport in carbon nanotube-polymer composites and networks. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2014/12/21/ VL - 116 IS - 23 M3 - Article SP - 233704-1 EP - 233704-10 PB - American Institute of Physics SN - 00218979 AB - A multiscale modeling approach to the prediction of electrical conductivity in carbon nanotube (CNT)-polymer composite materials is developed, which takes into account thermally activated molecular mobility of the matrix and the CNTs. On molecular level, a tight-binding density functional theory and non-equilibrium Green's function method are used to calculate the static electron transmission function in the contact between two metallic carbon nanotubes that corresponds to electron transport at 0K. For higher temperatures, the statistical distribution of effective contact resistances is considered that originates from thermal fluctuations of intermolecular distances caused by molecular mobility of carbon nanotube and the polymer matrix. Based on this distribution and using effective medium theory, the temperature dependence of macroscopic electrical resistivity for CNT-polymer composites and CNT mats is calculated. The predicted data indicate that the electrical conductivity of the CNT-polymer composites increases linearly with temperature above 50 K, which is in a quantitative agreement with the experiments. Our model predicts a slight nonlinearity in temperature dependence of electric conductivity at low temperatures for percolated composites with small CNT loading. The model also explains the effect of glass transition and other molecular relaxation processes in the polymer matrix on the composite electrical conductivity. The developed multiscale approach integrates the atomistic charge transport mechanisms in percolated CNT-polymer composites with the macroscopic response and thus enables direct comparison of the prediction with the measurements of macroscopic material properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - INTERMOLECULAR interactions KW - COMPOSITE materials KW - ELECTRICAL conductivity transitions KW - GRAPHENE N1 - Accession Number: 100097296; Sergei Shenogin 1,2; Email Address: sergei.shenogin.ctr.ru@us.af.mil Jonghoon Lee 1,3 Voevodin, Andrey A. 1 Roy, Ajit K. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, 2941 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433, USA 2: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469, USA 3: UTC, Inc., 1270 N Fairfield Rd, Dayton, Ohio 45432, USA; Source Info: 2014, Vol. 116 Issue 23, p233704-1; Subject Term: CARBON nanotubes; Subject Term: INTERMOLECULAR interactions; Subject Term: COMPOSITE materials; Subject Term: ELECTRICAL conductivity transitions; Subject Term: GRAPHENE; Number of Pages: 10p; Illustrations: 2 Diagrams, 1 Chart, 10 Graphs; Document Type: Article L3 - 10.1063/1.4904759 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100097296&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Derrick M. AU - Cheng, Shan AU - Wang, Wenda AU - Bunning, Timothy J. AU - Li, Christopher Y. T1 - Polymer electrolyte membranes with exceptional conductivity anisotropy via holographic polymerization. JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2014/12/20/ VL - 271 M3 - Article SP - 597 EP - 603 SN - 03787753 AB - Polymer electrolyte membranes using an ionic liquid as electrolyte with an ionic conductivity anisotropy of ∼5000 have been fabricated using a holographic polymerization nanomanufacturing technique. The resultant structure is referred to as holographic polymer electrolyte membranes (hPEMs), which are comprised of alternating nanolayers of a room temperature ionic liquid and crosslinked polymer resin, confirmed under TEM imaging. These hPEMs also show no reduction in room temperature conductivity with respect to the loaded ionic liquid when characterized in the plane of ionic liquid nanolayers. At elevated temperatures with the optimal electrolyte volume loading, calculation shows that the free ion concentration is higher than the pure ionic liquid, suggesting that the photopolymer dual-functionalizes as a loadbearing scaffold and an ion-complexing agent, allowing for more ions to participate in charge transfer. These hPEMs provide a promising solution to decoupling mechanical enhancement and ion transport in polymer electrolyte membranes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTON exchange membrane fuel cells KW - ANISOTROPY KW - IONIC liquids KW - IONIC conductivity KW - CROSSLINKING (Polymerization) KW - Holographic polymerization KW - Ion conducting KW - Ionic liquid KW - Photopolymerization KW - Polymer electrolyte membrane KW - Solid polymer electrolytes N1 - Accession Number: 98141497; Smith, Derrick M. 1 Cheng, Shan 1 Wang, Wenda 1 Bunning, Timothy J. 2 Li, Christopher Y. 1; Email Address: chrisli@drexel.edu; Affiliation: 1: Department of Material Science and Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, 19104 PA, USA 2: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Dec2014, Vol. 271, p597; Subject Term: PROTON exchange membrane fuel cells; Subject Term: ANISOTROPY; Subject Term: IONIC liquids; Subject Term: IONIC conductivity; Subject Term: CROSSLINKING (Polymerization); Author-Supplied Keyword: Holographic polymerization; Author-Supplied Keyword: Ion conducting; Author-Supplied Keyword: Ionic liquid; Author-Supplied Keyword: Photopolymerization; Author-Supplied Keyword: Polymer electrolyte membrane; Author-Supplied Keyword: Solid polymer electrolytes; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jpowsour.2014.07.172 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98141497&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boyang Zhang AU - Hendrickson, Joshua AU - Nader, Nima AU - Hou-Tong Chen AU - Junpeng Guo T1 - Metasurface optical antireflection coating. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/12/15/ VL - 105 IS - 24 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00036951 AB - Light reflection at the boundary of two different media is one of the fundamental phenomena in optics, and reduction of reflection is highly desirable in many optical systems. Traditionally, optical antireflection has been accomplished using single- or multiple-layer dielectric films and graded index surface structures in various wavelength ranges. However, these approaches either impose strict requirements on the refractive index matching and film thickness, or involve complicated fabrication processes and non-planar surfaces that are challenging for device integration. Here, we demonstrate an antireflection coating strategy, both experimentally and numerically, by using metasurfaces with designer optical properties in the mid-wave infrared. Our results show that the metasurface antireflection is capable of eliminating reflection and enhancing transmission over a broad spectral band and a wide incidence angle range. The demonstrated antireflection technique has no requirement on the choice of materials and is scalable to other wavelengths. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICS KW - RESEARCH KW - DIELECTRICS -- Research KW - ANTIREFLECTIVE coatings KW - REFLECTION (Optics) KW - REFRACTIVE index N1 - Accession Number: 100074579; Boyang Zhang 1 Hendrickson, Joshua 2 Nader, Nima 2,3 Hou-Tong Chen 4 Junpeng Guo 1; Email Address: guoj@uah.edu; Affiliation: 1: Department of Electrical and Computer Engineering, University of Alabama in Huntsville, Huntsville, Alabama 35899, USA 2: Sensors Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, USA 3: Solid State Scientific Corporation, Nashua, New Hampshire 03060, USA 4: Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA; Source Info: 2014, Vol. 105 Issue 24, p1; Subject Term: OPTICS; Subject Term: RESEARCH; Subject Term: DIELECTRICS -- Research; Subject Term: ANTIREFLECTIVE coatings; Subject Term: REFLECTION (Optics); Subject Term: REFRACTIVE index; Number of Pages: 5p; Illustrations: 1 Color Photograph, 2 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.4904827 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100074579&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wie, Jeong Jae AU - Wang, David H. AU - Tondiglia, Vincent P. AU - Tabiryan, Nelson V. AU - Vergara-Toloza, Rafael O. AU - Tan, Loon-Seng AU - White, Timothy J. T1 - Macromol. Rapid Commun. 24/2014. JO - Macromolecular Rapid Communications JF - Macromolecular Rapid Communications Y1 - 2014/12/15/ VL - 35 IS - 24 M3 - Article SP - 2045 EP - 2045 SN - 10221336 AB - The cover page of the journal "Macromolecular Rapid Communications" is presented. KW - MACROMOLECULES -- Periodicals KW - CHEMICALS KW - azobenzene KW - energy harvesting KW - piezoelectric polymer polyvinylidene fluoride KW - polyimide N1 - Accession Number: 99963045; Wie, Jeong Jae 1,2 Wang, David H. 1,3 Tondiglia, Vincent P. 1,4 Tabiryan, Nelson V. 5 Vergara-Toloza, Rafael O. 5 Tan, Loon-Seng 1 White, Timothy J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base 2: Azimuth Corporation 3: UES Inc. 4: Leidos Inc. 5: BEAM Engineering for Advanced Measurements Company; Source Info: Dec2014, Vol. 35 Issue 24, p2045; Subject Term: MACROMOLECULES -- Periodicals; Subject Term: CHEMICALS; Author-Supplied Keyword: azobenzene; Author-Supplied Keyword: energy harvesting; Author-Supplied Keyword: piezoelectric polymer polyvinylidene fluoride; Author-Supplied Keyword: polyimide; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 1p; Document Type: Article L3 - 10.1002/marc.201470087 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99963045&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wie, Jeong Jae AU - Wang, David H. AU - Tondiglia, Vincent P. AU - Tabiryan, Nelson V. AU - Vergara-Toloza, Rafael O. AU - Tan, Loon-Seng AU - White, Timothy J. T1 - Photopiezoelectric Composites of Azobenzene-Functionalized Polyimides and Polyvinylidene Fluoride. JO - Macromolecular Rapid Communications JF - Macromolecular Rapid Communications Y1 - 2014/12/15/ VL - 35 IS - 24 M3 - Article SP - 2050 EP - 2056 SN - 10221336 AB - Light is a readily available and sustainable energy source. Transduction of light into mechanical work or electricity in functional materials, composites, or systems has other potential advantages derived from the ability to remotely, spatially, and temporally control triggering by light. Toward this end, this work examines photoinduced piezoelectric (photopiezoelectric) effects in laminate composites prepared from photoresponsive polymeric materials and the piezoelectric polymer polyvinylidene fluoride (PVDF). In the geometry studied here, photopiezoelectric conversion is shown to strongly depend on the photomechanical properties inherent to the azobenzene-functionalized polyimides. Based on prior examinations of photomechanical effects in azobenzene-functionalized polyimides, this investigation focuses on amorphous materials and systematically varies the concentration of azobenzene in the copolymers. The baseline photomechanical response of the set of polyimides is characterized in cantilever deflection experiments. To improve the photomechanical response of the materials and enhance the electrical conversion, the polyimides are drawn to increase the magnitude of the deflection as well as photogenerated stress. In laminate composites, the photomechanical response of the materials in sequenced light exposure is shown to transduce light energy into electrical energy. The frequency of the photopiezoelectric response of the composite can match the frequency of the sequenced light exposing the films. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecular Rapid Communications is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PIEZOELECTRIC composites KW - POLYIMIDES KW - POLYVINYLIDENE fluoride KW - LAMINATED materials KW - AZOBENZENE KW - RENEWABLE energy sources KW - azobenzene KW - energy harvesting KW - piezoelectric polymer polyvinylidene fluoride KW - polyimide N1 - Accession Number: 99963052; Wie, Jeong Jae 1,2 Wang, David H. 1,3 Tondiglia, Vincent P. 1,4 Tabiryan, Nelson V. 5 Vergara-Toloza, Rafael O. 5 Tan, Loon-Seng 1 White, Timothy J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base 2: Azimuth Corporation 3: UES Inc. 4: Leidos Inc. 5: BEAM Engineering for Advanced Measurements Company; Source Info: Dec2014, Vol. 35 Issue 24, p2050; Subject Term: PIEZOELECTRIC composites; Subject Term: POLYIMIDES; Subject Term: POLYVINYLIDENE fluoride; Subject Term: LAMINATED materials; Subject Term: AZOBENZENE; Subject Term: RENEWABLE energy sources; Author-Supplied Keyword: azobenzene; Author-Supplied Keyword: energy harvesting; Author-Supplied Keyword: piezoelectric polymer polyvinylidene fluoride; Author-Supplied Keyword: polyimide; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1002/marc.201400455 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99963052&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patnaik, Anil K. AU - Roy, Sukesh AU - Gord, James R. T1 - Ultrafast saturation of resonant optical processes. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2014/12/15/ VL - 90 IS - 6-B M3 - Article SP - 1 EP - 8 SN - 10502947 AB - A generalized formulation is presented for determining the saturation thresholds for optical processes excited by ultrafast pulses based on the pulse area of the excitation pulse. It is demonstrated that the threshold of driving-pulse intensity for absorption and fluorescence saturation in a two-level system is inversely proportional to the square of the duration of the excitation pulse. These results are obtained from both a simplified analytical solution assuming a Gaussian excitation pulse shape and a detailed numerical calculation based on density-matrix equations. The calculation is generalized further to obtain the saturation condition for a two-photon Raman process by defining a two-photon pulse area both analytically and numerically. These results not only provide predictive capabilities for determining thresholds of signal saturation using ultrashort durations with arbitrary pulse shapes and durations but also open up possibilities for predetermining the threshold intensities of various resonant nonlinear processes. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PICOSECOND pulses KW - OPTICAL resonance KW - EXCITATION spectrum KW - NONLINEAR analysis KW - TIME-resolved spectroscopy KW - SINGLE photon generation KW - RAMAN scattering N1 - Accession Number: 100644438; Patnaik, Anil K. 1,2; Email Address: anil.patnaik@wright.edu Roy, Sukesh 3 Gord, James R. 1; Affiliation: 1: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, Ohio 45433, USA 2: Department of Physics, Wright State University, Dayton, Ohio 45435, USA 3: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, Ohio 45431, USA; Source Info: Dec2014, Vol. 90 Issue 6-B, p1; Subject Term: PICOSECOND pulses; Subject Term: OPTICAL resonance; Subject Term: EXCITATION spectrum; Subject Term: NONLINEAR analysis; Subject Term: TIME-resolved spectroscopy; Subject Term: SINGLE photon generation; Subject Term: RAMAN scattering; Number of Pages: 8p; Document Type: Article L3 - 10.1103/PhysRevA.90.063813 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100644438&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ard, Shaun G. AU - Li, Anyang AU - Martinez, Oscar AU - Shuman, Nicholas S. AU - Viggiano, Albert A. AU - Guo, Hua T1 - Experimentaland Theoretical Kinetics for the H2O++ H2/D2→ H3O+/H2DO++ H/D Reactions:Observation of the Rotational Effect in the Temperature Dependence. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2014/12/11/ VL - 118 IS - 49 M3 - Article SP - 11485 EP - 11489 SN - 10895639 AB - Thermal rate coefficients for thetitle reactions computed usinga quasi-classical trajectory method on an accurate global potentialenergy surface fitted to ∼81,000 high-level ab initio pointsare compared with experimental values measured between 100 and 600K using a variable temperature selected ion flow tube instrument.Excellent agreement is found across the entire temperature range,showing a subtle, but unusual temperature dependence of the rate coefficients.For both reactions the temperature dependence has a maximum around350 K, which is a result of H2O+rotations increasingthe reactivity, while kinetic energy is decreasing the reactivity.A strong isotope effect is found, although the calculations slightlyoverestimate the kinetic isotope effect. The good experiment–theoryagreement not only validates the accuracy of the potential energysurface but also provides more accurate kinetic data over a largetemperature range. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - KINETIC energy KW - HYDROGEN KW - RATE coefficients (Chemistry) KW - POTENTIAL energy surfaces KW - ION flow dynamics KW - ROTATIONAL motion N1 - Accession Number: 108582380; Ard, Shaun G. 1 Li, Anyang 1 Martinez, Oscar 1 Shuman, Nicholas S. 1 Viggiano, Albert A. 1 Guo, Hua 1; Affiliation: 1: †SpaceVehicle Directorate, Air Force Research Laboratory, Kirtland AFB, Albuquerque, New Mexico 87117, United States; Source Info: Dec2014, Vol. 118 Issue 49, p11485; Subject Term: KINETIC energy; Subject Term: HYDROGEN; Subject Term: RATE coefficients (Chemistry); Subject Term: POTENTIAL energy surfaces; Subject Term: ION flow dynamics; Subject Term: ROTATIONAL motion; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108582380&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ouskova, Elena AU - De Sio, Luciano AU - Vergara, Rafael AU - White, Timothy J. AU - Tabiryan, Nelson AU - Bunning, Timothy J. T1 - Ultra-fast solid state electro-optical modulator based on liquid crystal polymer and liquid crystal composites. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/12/08/ VL - 105 IS - 23 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00036951 AB - A different generation of polymer-dispersed liquid crystals (PDLCs) based on a liquid crystalline polymer host is reported wherein the fluid behavior of the reactive mesogenic monomer is an enabler to concentration windows (liquid crystal polymer/liquid crystal) (and subsequent morphologies) not previously explored. These liquid crystal (LC) polymer/LC composites, LCPDLCs, exhibit excellent optical and electro-optical properties with negligible scattering losses in both the ON and OFF states. These systems thus have application in systems where fast phase modulation of optical signal instead of amplitude control is needed. Polarized optical microscopy and high resolution scanning electron microscopy confirm a bicontinuous morphology composed of aligned LC polymer coexisting with a phase separated LC fluid. Operating voltages, switching times, and spectra of LCPDLCs compare favourably to conventional PDLC films. The LCPDLCs exhibit a low switching voltage (4-5 V/µm), symmetric and submillisecond (200 µs) on/off response times, and high transmission in both the as formed and switched state in a phase modulation geometry. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMER-dispersed liquid crystals KW - SOLID state electronics KW - LIQUID crystals KW - ELECTRO-optical modulators KW - PHASE modulation KW - SCANNING electron microscopy N1 - Accession Number: 99976971; Ouskova, Elena 1 De Sio, Luciano 1; Email Address: luciano@beamco.com Vergara, Rafael 1 White, Timothy J. 2 Tabiryan, Nelson 1 Bunning, Timothy J. 2; Affiliation: 1: Beam Engineering for Advanced. Measurements Company, Winter Park, Florida 32789, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7707, USA; Source Info: 2014, Vol. 105 Issue 23, p1; Subject Term: POLYMER-dispersed liquid crystals; Subject Term: SOLID state electronics; Subject Term: LIQUID crystals; Subject Term: ELECTRO-optical modulators; Subject Term: PHASE modulation; Subject Term: SCANNING electron microscopy; Number of Pages: 4p; Illustrations: 1 Color Photograph, 2 Graphs; Document Type: Article L3 - 10.1063/1.4904214 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99976971&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Matveev, Igor B. AU - Ombrello, Timothy T1 - Guest Editorial Introduction to the Special Issue on Plasma-Assisted Technologies December 2014. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2014/12/02/Dec2014 Part 2 VL - 42 IS - 12 M3 - Article SP - 3873 EP - 3875 SN - 00933813 AB - This is the ninth issue in a series of special issues on plasma-assisted combustion (PAC), following the success of the first IEEE-TPS Special Issue on PAC (December 2006). [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA (Ionized gases) KW - PERIODICALS KW - PLASMA engineering KW - COMBUSTION kinetics KW - COMBUSTION KW - INSTITUTE of Electrical & Electronics Engineers N1 - Accession Number: 100028490; Matveev, Igor B. 1 Ombrello, Timothy 2; Affiliation: 1: , Applied Plasma Technologies, LLC, McLean, VA, (USA) 2: , Air Force Research Laboratory, Wright-Patterson AFB, OH, (USA); Source Info: Dec2014 Part 2, Vol. 42 Issue 12, p3873; Subject Term: PLASMA (Ionized gases); Subject Term: PERIODICALS; Subject Term: PLASMA engineering; Subject Term: COMBUSTION kinetics; Subject Term: COMBUSTION; Company/Entity: INSTITUTE of Electrical & Electronics Engineers DUNS Number: 001651855; Number of Pages: 3p; Document Type: Article L3 - 10.1109/TPS.2014.2367866 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100028490&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - O׳Hara, Patrick J. AU - Hollkamp, Joseph J. T1 - Modeling vibratory damage with reduced-order models and the generalized finite element method. JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2014/12/02/ VL - 333 IS - 24 M3 - Article SP - 6637 EP - 6650 SN - 0022460X AB - This paper investigates a coupled computational analysis framework that uses reduced-order models and the generalized finite element method to model vibratory induced stress near local defects. The application area of interest is the life prediction of thin gauge structural components exhibiting nonlinear, path-dependent dynamic response. Full-order finite element models of these structural components can require prohibitively large amounts of processor time. Recent developments in nonlinear reduced-order models have demonstrated efficient computation of the dynamic response. These models are relatively insensitive to small imperfections. Conversely, the generalized finite element method provides the ability to model local defects without geometric dependency on the mesh. A more robust version of the method, with numerically built enrichment functions, provides a multiple-scale modeling capability through direct coupling of global and local finite element models. Replacing the component finite element model with a reduced-order model allows for efficient computation of dynamic response while providing the necessary information to drive local, solid analyses which can zoom in on regions containing stress risers or cracks. This paper describes the coupling of these approaches to enable fatigue and crack propagation predictions. Numerical/experimental examples are provided. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VIBRATION (Mechanics) KW - FINITE element method KW - COMPUTATIONAL mechanics KW - GAUGE field theory KW - NONLINEAR analysis KW - NUMERICAL analysis N1 - Accession Number: 97848594; O׳Hara, Patrick J. 1; Email Address: Patrick.Ohara.3.ctr@us.af.mil Hollkamp, Joseph J. 2; Affiliation: 1: Universal Technology Corporation, 1270 North Fairfield Road, Dayton, OH 45432, USA 2: Structural Sciences Center, Air Force Research Laboratory, AFRL/RQHF, Wright-Patterson AFB, OH 45433, USA; Source Info: Dec2014, Vol. 333 Issue 24, p6637; Subject Term: VIBRATION (Mechanics); Subject Term: FINITE element method; Subject Term: COMPUTATIONAL mechanics; Subject Term: GAUGE field theory; Subject Term: NONLINEAR analysis; Subject Term: NUMERICAL analysis; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.jsv.2014.07.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97848594&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dickens, Jonathan F. AU - Owens, Brett D. AU - Cameron, Kenneth L. AU - Kilcoyne, Kelly AU - Allred, C. Dain AU - Svoboda, Steven J. AU - Sullivan, Robert AU - Tokish, John M. AU - Peck, Karen Y. AU - Rue, John-Paul T1 - Return to Play and Recurrent Instability After In-Season Anterior Shoulder Instability: A Prospective Multicenter Study. JO - American Journal of Sports Medicine JF - American Journal of Sports Medicine Y1 - 2014/12// VL - 42 IS - 12 M3 - Article SP - 2842 EP - 2850 SN - 03635465 AB - The article focuses on the potential of in-season athletes who underwent treatment for treatment for anterior should instability to return to sport, with a focus on the role played by injury factors and patient-reported outcome scores. Topics discussed include the methodology and results of the author's cohort study of 45 contact intercollegiate athletes including percentage of athletes who were able to return to play and the state of their shoulder after their return. KW - COLLEGE athletes KW - CONFIDENCE intervals KW - FISHER exact test KW - FORECASTING KW - JOINTS (Anatomy) -- Hypermobility KW - LONGITUDINAL method KW - MEDICAL cooperation KW - MEDICAL rehabilitation KW - OBSERVATION (Scientific method) KW - PROBABILITY theory KW - REGRESSION analysis KW - RESEARCH KW - RESEARCH -- Evaluation KW - SHOULDER -- Wounds & injuries KW - SHOULDER dislocations KW - SPORTS injuries KW - STATISTICS KW - T-test (Statistics) KW - TIME KW - WOUNDS & injuries KW - LOGISTIC regression analysis KW - SPORTS participation KW - SUBLUXATION KW - DATA analysis -- Software KW - FUNCTIONAL assessment KW - DESCRIPTIVE statistics KW - ODDS ratio KW - COLORADO KW - MARYLAND KW - NEW York (State) KW - anterior instability KW - glenohumeral KW - in season KW - return N1 - Accession Number: 99684686; Dickens, Jonathan F. 1 Owens, Brett D. 2 Cameron, Kenneth L. 3 Kilcoyne, Kelly 4 Allred, C. Dain 5 Svoboda, Steven J. 2 Sullivan, Robert 5 Tokish, John M. 6 Peck, Karen Y. 3 Rue, John-Paul 7; Affiliation: 1: Uniformed Services University of Health Sciences, Bethesda, Maryland, USA, John A. Feagin Jr Sports Medicine Fellowship, Keller Army Hospital, United States Military Academy, West Point, New York, USA, jon.f.dickens@gmail.com 2: Uniformed Services University of Health Sciences, Bethesda, Maryland, USA, John A. Feagin Jr Sports Medicine Fellowship, Keller Army Hospital, United States Military Academy, West Point, New York, USA 3: John A. Feagin Jr Sports Medicine Fellowship, Keller Army Hospital, United States Military Academy, West Point, New York, USA 4: Uniformed Services University of Health Sciences, Bethesda, Maryland, USA, Walter Reed National Military Medical Center, Bethesda, Maryland, USA 5: United States Air Force Academy, Colorado Springs, Colorado, USA 6: Uniformed Services University of Health Sciences, Bethesda, Maryland, USA, Tripler Army Medical Center, Honolulu, Hawaii, USA 7: Naval Heath Clinic Annapolis, United States Naval Academy, Annapolis, Maryland, USA; Source Info: Dec2014, Vol. 42 Issue 12, p2842; Subject Term: COLLEGE athletes; Subject Term: CONFIDENCE intervals; Subject Term: FISHER exact test; Subject Term: FORECASTING; Subject Term: JOINTS (Anatomy) -- Hypermobility; Subject Term: LONGITUDINAL method; Subject Term: MEDICAL cooperation; Subject Term: MEDICAL rehabilitation; Subject Term: OBSERVATION (Scientific method); Subject Term: PROBABILITY theory; Subject Term: REGRESSION analysis; Subject Term: RESEARCH; Subject Term: RESEARCH -- Evaluation; Subject Term: SHOULDER -- Wounds & injuries; Subject Term: SHOULDER dislocations; Subject Term: SPORTS injuries; Subject Term: STATISTICS; Subject Term: T-test (Statistics); Subject Term: TIME; Subject Term: WOUNDS & injuries; Subject Term: LOGISTIC regression analysis; Subject Term: SPORTS participation; Subject Term: SUBLUXATION; Subject Term: DATA analysis -- Software; Subject Term: FUNCTIONAL assessment; Subject Term: DESCRIPTIVE statistics; Subject Term: ODDS ratio; Subject Term: COLORADO; Subject Term: MARYLAND; Subject Term: NEW York (State); Author-Supplied Keyword: anterior instability; Author-Supplied Keyword: glenohumeral; Author-Supplied Keyword: in season; Author-Supplied Keyword: return; Number of Pages: 9p; Document Type: Article; Full Text Word Count: 6153 L3 - 10.1177/0363546514553181 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99684686&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 103859481 T1 - Return to Play and Recurrent Instability After In-Season Anterior Shoulder Instability: A Prospective Multicenter Study. AU - Dickens, Jonathan F. AU - Owens, Brett D. AU - Cameron, Kenneth L. AU - Kilcoyne, Kelly AU - Allred, C. Dain AU - Svoboda, Steven J. AU - Sullivan, Robert AU - Tokish, John M. AU - Peck, Karen Y. AU - Rue, John-Paul Y1 - 2014/12// N1 - Accession Number: 103859481. Language: English. Entry Date: 20141211. Revision Date: 20150710. Publication Type: Journal Article; research; tables/charts. Journal Subset: Allied Health; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services; Perioperative Care; Physical Therapy; Sports Medicine. Instrumentation: American Shoulder and Elbow Society Scoring System (ASES); Simple Shoulder Test (SST); Single Assessment Numeric Evaluation (SANE); Western Ontario Shoulder Instability Index (WOSI). NLM UID: 7609541. KW - Shoulder Instability, Anterior KW - Athletic Injuries KW - Sports Re-Entry KW - Forecasting KW - Time Factors KW - Human KW - Maryland KW - New York KW - Colorado KW - Multicenter Studies KW - Prospective Studies KW - Athletes, College KW - Shoulder Instability, Anterior -- Rehabilitation KW - Rehabilitation, Athletic KW - Reinjury KW - Shoulder Dislocation KW - Subluxation KW - Logistic Regression KW - Clinical Assessment Tools KW - Odds Ratio KW - Confidence Intervals KW - P-Value KW - Functional Assessment KW - Nonexperimental Studies KW - Validity KW - Descriptive Statistics KW - Fisher's Exact Test KW - T-Tests KW - Kruskal-Wallis Test KW - Linear Regression KW - Data Analysis Software KW - Male KW - Female KW - Young Adult SP - 2842 EP - 2850 JO - American Journal of Sports Medicine JF - American Journal of Sports Medicine JA - AM J SPORTS MED VL - 42 IS - 12 CY - Thousand Oaks, California PB - Sage Publications Inc. SN - 0363-5465 AD - Uniformed Services University of Health Sciences, Bethesda, Maryland, USA, John A. Feagin Jr Sports Medicine Fellowship, Keller Army Hospital, United States Military Academy, West Point, New York, USA, jon.f.dickens@gmail.com AD - Uniformed Services University of Health Sciences, Bethesda, Maryland, USA, John A. Feagin Jr Sports Medicine Fellowship, Keller Army Hospital, United States Military Academy, West Point, New York, USA AD - John A. Feagin Jr Sports Medicine Fellowship, Keller Army Hospital, United States Military Academy, West Point, New York, USA AD - Uniformed Services University of Health Sciences, Bethesda, Maryland, USA, Walter Reed National Military Medical Center, Bethesda, Maryland, USA AD - United States Air Force Academy, Colorado Springs, Colorado, USA AD - Uniformed Services University of Health Sciences, Bethesda, Maryland, USA, Tripler Army Medical Center, Honolulu, Hawaii, USA AD - Naval Heath Clinic Annapolis, United States Naval Academy, Annapolis, Maryland, USA U2 - PMID: 25378207. DO - 10.1177/0363546514553181 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=103859481&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Chávez, Jorge L. AU - Leny, Juliann K. AU - Witt, Suzanne AU - Slusher, Grant M. AU - Hagen, Joshua A. AU - Kelley-Loughnane, Nancy T1 - Plasmonic aptamer–gold nanoparticle sensors for small molecule fingerprint identification. JO - Analyst JF - Analyst Y1 - 2014/12// VL - 139 IS - 23 M3 - Article SP - 6214 EP - 6222 SN - 00032654 AB - The utilization of the plasmonic response of aptamer–gold nanoparticle conjugates (Apt–AuNPs) to design cross-reactive arrays for fingerprint identification of small molecular targets was demonstrated for the first time. Four aptamers with different structural features previously selected to bind different targets were used in combination with AuNPs by adsorbing the DNA on the AuNPs surface. The optimized response of the Apt–AuNPs to the analytes showed that, depending on the specific aptamer used, target binding by the aptamer could result in an increase or decrease of Apt–AuNPs stability. These Apt–AuNPs showed the ability to recognize different analytes with different affinities, generating fingerprints that allowed unambiguous analyte identification with response times in less than fifteen minutes. Importantly, it was observed that it was not necessary to select an aptamer per analyte of interest to generate differentiable signatures, but a subset of aptamers could be used to identify a larger number of analytes. The data was analyzed using principal component analysis, showing efficient clustering of the different datasets for qualitative and quantitative identification. This work opens the door to using these Apt–AuNPs in point of care diagnostics applications where fast sensors with easy to read outputs are needed. [ABSTRACT FROM AUTHOR] AB - Copyright of Analyst is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMONICS (Electronics) KW - GOLD nanoparticles KW - FINGERPRINTS KW - DNA KW - PRINCIPAL components analysis KW - APTAMERS N1 - Accession Number: 100393791; Chávez, Jorge L. 1 Leny, Juliann K. 1 Witt, Suzanne 1 Slusher, Grant M. 1 Hagen, Joshua A. 1 Kelley-Loughnane, Nancy 1; Affiliation: 1: Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: 2014, Vol. 139 Issue 23, p6214; Subject Term: PLASMONICS (Electronics); Subject Term: GOLD nanoparticles; Subject Term: FINGERPRINTS; Subject Term: DNA; Subject Term: PRINCIPAL components analysis; Subject Term: APTAMERS; Number of Pages: 9p; Document Type: Article L3 - 10.1039/c4an01376j UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100393791&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tolstykh, Gleb P. AU - Beier, Hope T. AU - Roth, Caleb C. AU - Thompson, Gary L. AU - Ibey, Bennett L. T1 - 600 ns pulse electric field-induced phosphatidylinositol4,5-bisphosphate depletion. JO - Bioelectrochemistry JF - Bioelectrochemistry Y1 - 2014/12// VL - 100 M3 - Article SP - 80 EP - 87 SN - 15675394 AB - The interaction between nsPEF-induced Ca 2 + release and nsPEF-induced phosphatidylinositol 4,5 -bisphosphate (PIP 2 ) hydrolysis is not well understood. To better understand this interrelation we monitored intracellular calcium changes, in cells loaded with Calcium Green-1 AM, and generation of PIP 2 hydrolysis byproducts (inositol-1,4,5-trisphosphate (IP 3 ) and diacylglycerol (DAG)) in cells transfected with one of two fluorescent reporter genes: PLCδ-PH-EGFP or GFP-C 1 -PKCγ-C 1a . The percentage fluorescence differences (ΔF %) after exposures were determined. Upon nsPEF impact, we found that in the absence of extracellular Ca 2 + the population of IP 3 liberated during nsPEF exposure (ΔF 6% ± 3, n = 22), is diminished compared to the response in the presence of calcium (ΔF 84% ± 15, n = 20). The production of DAG in the absence of extracellular Ca 2 + (ΔF 29% ± 5, n = 25), as well as in cells exposed to thapsigargin (ΔF 40% ± 12, n = 15), was not statistically different from cells exposed in the presence of extracellular calcium (ΔF 22 ± 6%, n = 18). This finding suggests that the change in intracellular calcium concentration is not solely driving the observed response. Interestingly, the DAG produced in the absence of Ca 2 + is the strongest near the membrane regions facing the electrodes, whereas the presence of extracellular Ca 2 + leads to a whole cell response. The reported observations of Ca 2 + dynamics combined with IP 3 and DAG production suggest that nsPEF may cause a direct effect on the phospholipids within the plasma membrane. [ABSTRACT FROM AUTHOR] AB - Copyright of Bioelectrochemistry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CELLS -- Electric properties KW - ELECTRIC fields -- Physiological effect KW - PHOSPHATIDYLINOSITOLS KW - PHOSPHATES -- Physiological effect KW - PHOSPHOLIPASE C KW - Calcium KW - Electric pulse KW - Nanopore KW - Phospholipase C KW - PIP 2 depletion N1 - Accession Number: 98601618; Tolstykh, Gleb P. 1,2; Email Address: gtolstykh@gmail.com Beier, Hope T. 3 Roth, Caleb C. 4 Thompson, Gary L. 1 Ibey, Bennett L. 3; Affiliation: 1: National Research Council, Oak Ridge Institute for Science and Education, JBSA Fort Sam Houston, TX 78234, USA 2: General Dynamics Information Technology, Fort Sam Houston, San Antonio, TX, USA 3: Air Force Research Laboratory, 711th Human Performance Wing, Human Effectiveness Directorate, Bioeffects Division, JBSA Fort Sam Houston, TX 78234, USA 4: Department of Radiology, University of Texas Health Science Center San Antonio, TX 78229, USA; Source Info: Dec2014, Vol. 100, p80; Subject Term: CELLS -- Electric properties; Subject Term: ELECTRIC fields -- Physiological effect; Subject Term: PHOSPHATIDYLINOSITOLS; Subject Term: PHOSPHATES -- Physiological effect; Subject Term: PHOSPHOLIPASE C; Author-Supplied Keyword: Calcium; Author-Supplied Keyword: Electric pulse; Author-Supplied Keyword: Nanopore; Author-Supplied Keyword: Phospholipase C; Author-Supplied Keyword: PIP 2 depletion; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.bioelechem.2014.01.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98601618&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pakhomov, Andrei G. AU - Xiao, Shu AU - Pakhomova, Olga N. AU - Semenov, Iurii AU - Kuipers, Marjorie A. AU - Ibey, Bennett L. T1 - Disassembly of actin structures by nanosecond pulsed electric field is a downstream effect of cell swelling. JO - Bioelectrochemistry JF - Bioelectrochemistry Y1 - 2014/12// VL - 100 M3 - Article SP - 88 EP - 95 SN - 15675394 AB - Disruption of the actin cytoskeleton structures was reported as one of the characteristic effects of nanosecond-duration pulsed electric field (nsPEF) in both mammalian and plant cells. We utilized CHO cells that expressed the monomeric fluorescent protein (mApple) tagged to actin to test if nsPEF modifies the cell actin directly or as a consequence of cell membrane permeabilization. A train of four 600-ns pulses at 19.2 kV/cm (2 Hz) caused immediate cell membrane poration manifested by YO-PRO-1 dye uptake, gradual cell rounding and swelling. Concurrently, bright actin features were replaced by dimmer and uniform fluorescence of diffuse actin. To block the nsPEF-induced swelling, the bath buffer was isoosmotically supplemented with an electropore-impermeable solute (sucrose). A similar addition of a smaller, electropore-permeable solute (adonitol) served as a control. We demonstrated that sucrose efficiently blocked disassembly of actin features by nsPEF, whereas adonitol did not. Sucrose also attenuated bleaching of mApple-tagged actin in nsPEF-treated cells (as integrated over the cell volume), although did not fully prevent it. We conclude that disintegration of the actin cytoskeleton was a result of cell swelling, which, in turn, was caused by cell permeabilization by nsPEF and transmembrane diffusion of solutes which led to the osmotic imbalance. [ABSTRACT FROM AUTHOR] AB - Copyright of Bioelectrochemistry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CYTOSKELETON KW - ACTIN KW - ELECTRIC fields KW - EDEMA KW - CELL membranes KW - ELECTROPORATION KW - Cytoskeleton KW - DIC differential interference contrast KW - Electric pulses KW - Electroporation KW - Nanopores KW - nsPEF nanosecond pulsed electric field KW - Plasma membrane KW - ROS reactive oxygen species N1 - Accession Number: 98601601; Pakhomov, Andrei G. 1; Email Address: 2andrei@pakhomov.net Xiao, Shu 1,2 Pakhomova, Olga N. 1 Semenov, Iurii 1 Kuipers, Marjorie A. 3 Ibey, Bennett L. 3; Affiliation: 1: Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, USA 2: Dept. of Electrical and Computer Engineering, Old Dominion University, Norfolk, VA, USA 3: Radio Frequency Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory, Fort Sam Houston, TX, USA; Source Info: Dec2014, Vol. 100, p88; Subject Term: CYTOSKELETON; Subject Term: ACTIN; Subject Term: ELECTRIC fields; Subject Term: EDEMA; Subject Term: CELL membranes; Subject Term: ELECTROPORATION; Author-Supplied Keyword: Cytoskeleton; Author-Supplied Keyword: DIC differential interference contrast; Author-Supplied Keyword: Electric pulses; Author-Supplied Keyword: Electroporation; Author-Supplied Keyword: Nanopores; Author-Supplied Keyword: nsPEF nanosecond pulsed electric field; Author-Supplied Keyword: Plasma membrane; Author-Supplied Keyword: ROS reactive oxygen species; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.bioelechem.2014.01.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98601601&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Navas, Hugo AU - Maruyama, Benji AU - Weaver, Kent AU - Paillet, Matthieu AU - Zahab, Ahmed-Azmi AU - Fossard, Frédéric AU - Loiseau, Annick AU - Quesnel, Etienne AU - Anglaret, Eric AU - Jourdain, Vincent T1 - Interplay of interfacial compounds, catalyst thickness and carbon precursor supply in the selectivity of single-walled carbon nanotube growth. JO - Carbon JF - Carbon Y1 - 2014/12// VL - 80 M3 - Article SP - 599 EP - 609 SN - 00086223 AB - This study is devoted to elucidate the interplay of catalyst thickness and growth conditions in the activation and selectivity of single-walled carbon nanotube growth using cobalt deposited on Si/SiO 2 as a model system. In situ Raman studies reveal that thin catalyst layers require a higher pressure of carbon precursor to initiate nanotube growth. However, if the catalysts are pre-reduced, all catalyst thicknesses display the same low threshold pressure and a higher yield of single-walled carbon nanotubes. To explain these results, catalysts formed from a gradient of cobalt thickness are studied. Surface analyses show that during the catalyst preparation, catalyst atoms at the interface with silica form small and hard-to-reduce silicate nanoparticles while the catalyst in excess leads to the formation of large oxide particles. Weakly-reducing conditions of pretreatment or synthesis are sufficient to reduce the large oxide particles and to lead to the growth of large-diameter multi-walled carbon nanostructures. However, highly-reducing conditions are required to reduce the small silicate domains into small cobalt particles able to grow single-walled carbon nanotubes. These results show that reaction of the catalyst with the support to form more refractory compounds greatly impact the nucleation yield and the growth selectivity of single-walled carbon nanotubes. [ABSTRACT FROM AUTHOR] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SINGLE walled carbon nanotubes KW - CHEMICAL precursors KW - CRYSTAL growth KW - ACTIVATION (Chemistry) KW - SILICA N1 - Accession Number: 98668124; Navas, Hugo 1,2 Maruyama, Benji 3 Weaver, Kent 3 Paillet, Matthieu 1,2 Zahab, Ahmed-Azmi 1,2 Fossard, Frédéric 4 Loiseau, Annick 4 Quesnel, Etienne 5 Anglaret, Eric 1,2 Jourdain, Vincent 1,2; Email Address: vincent.jourdain@um2.fr; Affiliation: 1: Université Montpellier 2, Laboratoire Charles Coulomb UMR 5221, F-34095 Montpellier, France 2: CNRS, Laboratoire Charles Coulomb UMR 5221, F-34095 Montpellier, France 3: US Air Force Research Laboratory, Materials & Manufacturing Directorate, RXAS, WPAFB, OH 45387, USA 4: Laboratoire d’Études des Microstructures, ONERA-CNRS, F-92322 Châtillon, France 5: CEA, Liten, DTNM, 17 rue des martyrs, 38054 Grenoble cedex 9, France; Source Info: Dec2014, Vol. 80, p599; Subject Term: SINGLE walled carbon nanotubes; Subject Term: CHEMICAL precursors; Subject Term: CRYSTAL growth; Subject Term: ACTIVATION (Chemistry); Subject Term: SILICA; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.carbon.2014.09.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98668124&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Yannian AU - Wang, Mengfei AU - Wang, Hao AU - Urbas, Augustine AU - Li, Quan T1 - Rationally Designed Axially Chiral Diarylethene Switches with High Helical Twisting Power. JO - Chemistry - A European Journal JF - Chemistry - A European Journal Y1 - 2014/12// VL - 20 IS - 49 M3 - Article SP - 16286 EP - 16292 SN - 09476539 AB - Three rationally designed axially chiral diarylethene switches were synthesized and their application as chiral dopants for phototunable cholesteric liquid crystal devices was investigated. Design of these molecules was based on the combination of photochromic dithienylcyclopentene core with bridged binaphthyl units as chiral precursors. Aromatic groups were introduced to the molecules at 6,6′-positions of binaphthyls through a Suzuki-Miyaura coupling reaction. Their helical twisting powers (HTPs) are significantly higher than those of the known chiral diarylethenes reported as chiral dopants so far. Photocyclization of these molecules upon light irradiation brought out dramatic variation in HTPs between different states. The primary colors, red, green, and blue, were obtained in reflection on light irradiation and with thermal stability. Moreover, a multi-switchable photodisplay was demonstrated using one of these chiral molecular switches. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemistry - A European Journal is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHIRALITY KW - LIQUID crystals KW - PHOTOCHROMIC materials KW - HELICAL structure (Molecules) KW - PHYSICAL & theoretical chemistry KW - axial chirality KW - liquid crystals KW - molecular switches KW - photochromism KW - reflection color N1 - Accession Number: 99598356; Li, Yannian 1 Wang, Mengfei 1 Wang, Hao 1 Urbas, Augustine 2 Li, Quan 1; Affiliation: 1: Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, Kent, OH, 44240 (USA), Fax: (+1) 330-672-2796 2: Materials and Manufacturing Directorate, Air Force Research Laboratory WPAFB, OH, 45433 (USA); Source Info: Dec2014, Vol. 20 Issue 49, p16286; Subject Term: CHIRALITY; Subject Term: LIQUID crystals; Subject Term: PHOTOCHROMIC materials; Subject Term: HELICAL structure (Molecules); Subject Term: PHYSICAL & theoretical chemistry; Author-Supplied Keyword: axial chirality; Author-Supplied Keyword: liquid crystals; Author-Supplied Keyword: molecular switches; Author-Supplied Keyword: photochromism; Author-Supplied Keyword: reflection color; Number of Pages: 7p; Document Type: Article L3 - 10.1002/chem.201403705 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99598356&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Horan, Victoria AU - Hurlbert, Glenn T1 - Gray codes and overlap cycles for restricted weight words. JO - Discrete Mathematics, Algorithms & Applications JF - Discrete Mathematics, Algorithms & Applications Y1 - 2014/12// VL - 6 IS - 4 M3 - Article SP - -1 SN - 17938309 AB - A Gray code is a listing structure for a set of combinatorial objects such that some consistent (usually minimal) change property is maintained throughout adjacent elements in the list. While Gray codes for m-ary strings have been considered in the past, we provide a new, simple Gray code for fixed-weight m-ary strings. In addition, we consider a relatively new type of Gray code known as overlap cycles and prove basic existence results concerning overlap cycles for fixed-weight and weight-range m-ary words. [ABSTRACT FROM AUTHOR] AB - Copyright of Discrete Mathematics, Algorithms & Applications is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAY codes KW - OVERLAP integral KW - ADJACENT re-entry model KW - BINARY system (Mathematics) KW - CODING theory KW - fixed weight KW - Gray code KW - overlap cycle KW - weight range N1 - Accession Number: 98836580; Horan, Victoria 1 Hurlbert, Glenn 2; Affiliation: 1: Air Force Research Laboratory, Information Directorate, New York, USA 2: School of Mathematical and Statistical Sciences, Arizona State University, Arizona, USA; Source Info: Dec2014, Vol. 6 Issue 4, p-1; Subject Term: GRAY codes; Subject Term: OVERLAP integral; Subject Term: ADJACENT re-entry model; Subject Term: BINARY system (Mathematics); Subject Term: CODING theory; Author-Supplied Keyword: fixed weight; Author-Supplied Keyword: Gray code; Author-Supplied Keyword: overlap cycle; Author-Supplied Keyword: weight range; Number of Pages: 12p; Document Type: Article L3 - 10.1142/S1793830914500621 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98836580&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Veremyev, Alexander AU - Prokopyev, Oleg A. AU - Boginski, Vladimir AU - Pasiliao, Eduardo L. T1 - Finding maximum subgraphs with relatively large vertex connectivity. JO - European Journal of Operational Research JF - European Journal of Operational Research Y1 - 2014/12// VL - 239 IS - 2 M3 - Article SP - 349 EP - 362 SN - 03772217 AB - We consider a clique relaxation model based on the concept of relative vertex connectivity. It extends the classical definition of a k-vertex-connected subgraph by requiring that the minimum number of vertices whose removal results in a disconnected (or a trivial) graph is proportional to the size of this subgraph, rather than fixed at k. Consequently, we further generalize the proposed approach to require vertex-connectivity of a subgraph to be some function f of its size. We discuss connections of the proposed models with other clique relaxation ideas from the literature and demonstrate that our generalized framework, referred to as f-vertex-connectivity, encompasses other known vertex-connectivity-based models, such as s-bundle and k-block. We study related computational complexity issues and show that finding maximum subgraphs with relatively large vertex connectivity is NP-hard. An interesting special case that extends the R-robust 2-club model recently introduced in the literature, is also considered. In terms of solution techniques, we first develop general linear mixed integer programming (MIP) formulations. Then we describe an effective exact algorithm that iteratively solves a series of simpler MIPs, along with some enhancements, in order to obtain an optimal solution for the original problem. Finally, we perform computational experiments on several classes of random and real-life networks to demonstrate performance of the developed solution approaches and illustrate some properties of the proposed clique relaxation models. [ABSTRACT FROM AUTHOR] AB - Copyright of European Journal of Operational Research is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - SUBGRAPHS KW - RELAXATION methods (Mathematics) KW - COMPUTATIONAL complexity KW - MIXED integer linear programming KW - ROBUST programming KW - 2-Club KW - Clique relaxations KW - Computational complexity KW - Mixed integer programming KW - Vertex connectivity N1 - Accession Number: 97120557; Veremyev, Alexander 1,2; Prokopyev, Oleg A. 3; Email Address: droleg@pitt.edu; Boginski, Vladimir 2; Pasiliao, Eduardo L. 1; Affiliations: 1: Munitions Directorate, Air Force Research Laboratory, Eglin AFB, FL, USA; 2: Department of Industrial and Systems Engineering, University of Florida, Gainesville, FL, USA; 3: Department of Industrial Engineering, University of Pittsburgh, Pittsburgh, PA, USA; Issue Info: Dec2014, Vol. 239 Issue 2, p349; Thesaurus Term: ALGORITHMS; Subject Term: SUBGRAPHS; Subject Term: RELAXATION methods (Mathematics); Subject Term: COMPUTATIONAL complexity; Subject Term: MIXED integer linear programming; Subject Term: ROBUST programming; Author-Supplied Keyword: 2-Club; Author-Supplied Keyword: Clique relaxations; Author-Supplied Keyword: Computational complexity; Author-Supplied Keyword: Mixed integer programming; Author-Supplied Keyword: Vertex connectivity; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.ejor.2014.05.041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=97120557&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Jauchem, James AU - Cerna, Cesario AU - Lim, Tiffany AU - Seaman, Ronald T1 - Exposures of Sus scrofa to a TASER conducted electrical weapon: no effects on 2-dimensional gel electrophoresis patterns of plasma proteins. JO - Forensic Science, Medicine & Pathology JF - Forensic Science, Medicine & Pathology Y1 - 2014/12// VL - 10 IS - 4 M3 - Article SP - 526 EP - 534 SN - 1547769X AB - In an earlier study, we found significant changes in red-blood-cell, leukocyte, and platelet counts, and in red-blood-cell membrane proteins, following exposures of anesthetized pigs to a conducted electrical weapon. In the current study, we examined potential changes in plasma proteins [analyzed via two-dimensional gel electrophoresis (2-DGE)] following two 30 s exposures of anesthetized pigs ( Sus scrofa) to a TASER C2 conducted electrical weapon. Patterns of proteins, separated by 2-DGE, were consistent and reproducible between animals and between times of sampling. We determined that the blood plasma collection, handling, storage, and processing techniques we used are suitable for swine blood. There were no statistically significant changes in plasma proteins following the conducted-electrical-weapon exposures. Overall gel patterns of fibrinogen were similar to results of other studies of both pigs and humans (in control settings, not exposed to conducted electrical weapons). The lack of significant changes in plasma proteins may be added to the body of evidence regarding relative safety of TASER C2 device exposures. [ABSTRACT FROM AUTHOR] AB - Copyright of Forensic Science, Medicine & Pathology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BLOOD proteins -- Separation KW - GEL electrophoresis KW - SWINE as laboratory animals KW - WILD boar KW - ELECTRIC apparatus & appliances KW - FIBRINOGEN KW - Conducted electrical weapon KW - Conducted energy weapon KW - Electro-muscular disruption KW - Electronic control device KW - Muscle contraction KW - Plasma proteins KW - TASER KW - Two-dimensional gel electrophoresis N1 - Accession Number: 99254852; Jauchem, James 1; Email Address: jjauchem@satx.rr.com Cerna, Cesario 2 Lim, Tiffany 1 Seaman, Ronald 2; Affiliation: 1: Bio-Effects Division, Human Effectiveness Directorate, 711th Human Performance Wing, US Air Force Research Laboratory, 711 HPW/RHDR, 4141 Petroleum Road Fort Sam Houston 78234 USA 2: General Dynamics Information Technology, Fort Sam Houston 78234 USA; Source Info: Dec2014, Vol. 10 Issue 4, p526; Subject Term: BLOOD proteins -- Separation; Subject Term: GEL electrophoresis; Subject Term: SWINE as laboratory animals; Subject Term: WILD boar; Subject Term: ELECTRIC apparatus & appliances; Subject Term: FIBRINOGEN; Author-Supplied Keyword: Conducted electrical weapon; Author-Supplied Keyword: Conducted energy weapon; Author-Supplied Keyword: Electro-muscular disruption; Author-Supplied Keyword: Electronic control device; Author-Supplied Keyword: Muscle contraction; Author-Supplied Keyword: Plasma proteins; Author-Supplied Keyword: TASER; Author-Supplied Keyword: Two-dimensional gel electrophoresis; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; NAICS/Industry Codes: 335990 All other electrical equipment and component manufacturing; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 811412 Appliance Repair and Maintenance; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 112999 All other miscellaneous animal production; Number of Pages: 9p; Document Type: Article L3 - 10.1007/s12024-014-9606-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99254852&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Romigh, Griffin D. AU - Simpson, Brian D. T1 - Do you hear where I hear?: isolating the individualized sound localization cues. JO - Frontiers in Neuroscience JF - Frontiers in Neuroscience Y1 - 2014/12// VL - 8 M3 - Article SP - 1 EP - 8 SN - 16624548 AB - It is widely acknowledged that individualized head-related transfer function (HRTF) measurements are needed to adequately capture all of the 3D spatial hearing cues. However, many perceptual studies have shown that localization accuracy in the lateral dimension is only minimally decreased by the use of non-individualized head-related transfer functions. This evidence supports the idea that the individualized components of an HRTF could be isolated from those that are more general in nature. In the present study we decomposed the HRTF at each location into average, lateral and intraconic spectral components, along with an ITD in an effort to isolate the sound localization cues that are responsible for the inter-individual differences in localization performance. HRTFs for a given listener were then reconstructed systematically with components that were both individualized and non-individualized in nature, and the effect of each modification was analyzed via a virtual localization test where brief 250ms noise bursts were rendered with the modified HRTFs. Results indicate that the cues important for individualization of HRTFs are contained almost exclusively in the intraconic portion of the HRTF spectra and localization is only minimally affected by introducing non-individualized cues into the other HRTF components. These results provide new insights into what specific inter-individual differences in head-related acoustical features are most relevant to sound localization, and provide a framework for how future human-machine interfaces might be more effectively generalized and/or individualized. [ABSTRACT FROM AUTHOR] AB - Copyright of Frontiers in Neuroscience is the property of Frontiers Media S.A. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACOUSTIC localization KW - INDIVIDUAL differences KW - AUDIO equipment KW - AUDITORY displays KW - HUMAN-machine systems KW - auditory display KW - head-related transfer function KW - individual differences KW - spatial hearing N1 - Accession Number: 101662725; Romigh, Griffin D. 1; Email Address: griffin.romigh@us.af.mil Simpson, Brian D. 1; Affiliation: 1: Air Force Research Laboratory, Dayton, OH, USA; Source Info: Dec2014, Vol. 8, p1; Subject Term: ACOUSTIC localization; Subject Term: INDIVIDUAL differences; Subject Term: AUDIO equipment; Subject Term: AUDITORY displays; Subject Term: HUMAN-machine systems; Author-Supplied Keyword: auditory display; Author-Supplied Keyword: head-related transfer function; Author-Supplied Keyword: individual differences; Author-Supplied Keyword: spatial hearing; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; Number of Pages: 8p; Document Type: Article L3 - 10.3389/fnins.2014.00370 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101662725&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wisniewski, Matthew G. AU - Mercado, III., Eduardo AU - Church, Barbara A. AU - Gramann, Klaus AU - Makeig, Scott T1 - Brain dynamics that correlate with effects of learning on auditory distance perception. JO - Frontiers in Neuroscience JF - Frontiers in Neuroscience Y1 - 2014/12// VL - 8 M3 - Article SP - 1 EP - 15 SN - 16624548 AB - Accuracy in auditory distance perception can improve with practice and varies for sounds differing in familiarity. Here, listeners were trained to judge the distances of English, Bengali, and backwards speech sources pre-recorded at near (2-m) and far (30-m) distances. Listeners' accuracy was tested before and after training. Improvements from pre-test to post-test were greater for forward speech, demonstrating a learning advantage for forward speech sounds. Independent component (IC) processes identified in electroencephalographic (EEG) data collected during pre- and post-testing revealed three clusters of ICs across subjects with stimulus-locked spectral perturbations related to learning and accuracy. One cluster exhibited a transient stimulus-locked increase in 4-8 Hz power (theta event-related synchronization; ERS) that was smaller after training and largest for backwards speech. For a left temporal cluster, 8-12 Hz decreases in power (alpha event-related desynchronization; ERD) were greatest for English speech and less prominent after training. In contrast, a cluster of IC processes centered at or near anterior portions of the medial frontal cortex showed learning-related enhancement of sustained increases in 10-16 Hz power (upper-alpha/low-beta ERS). The degree of this enhancement was positively correlated with the degree of behavioral improvements. Results suggest that neural dynamics in non-auditory cortical areas support distance judgments. Further, frontal cortical networks associated with attentional and/or working memory processes appear to play a role in perceptual learning for source distance. [ABSTRACT FROM AUTHOR] AB - Copyright of Frontiers in Neuroscience is the property of Frontiers Media S.A. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERCEPTUAL learning KW - SHORT-term memory KW - ELECTROENCEPHALOGRAPHY KW - BRAIN diseases -- Diagnosis KW - BIOMEDICAL signal processing KW - EVOKED potentials (Electrophysiology) KW - electroencephalography (EEG) KW - event-related spectral perturbation (ERSP) KW - familiarity KW - independent component analysis (ICA) KW - perceptual learning KW - ranging N1 - Accession Number: 101662740; Wisniewski, Matthew G. 1,2; Email Address: matt.g.wisniewski@gmail.com Mercado, III., Eduardo 2 Church, Barbara A. 2 Gramann, Klaus 3 Makeig, Scott 4; Affiliation: 1: 711th Human Performance Wing, U. S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA 2: Department of Psychology, University at Buffalo, The State University of New York, Buffalo, NY, USA 3: Biological Psychology and Neuroergonomics, Berlin Institute of Technology, Berlin, Germany 4: Swartz Center for Computational Neuroscience, Institute for Neural Computation, University of California, San Diego, San Diego, CA, USA; Source Info: Dec2014, Vol. 8, p1; Subject Term: PERCEPTUAL learning; Subject Term: SHORT-term memory; Subject Term: ELECTROENCEPHALOGRAPHY; Subject Term: BRAIN diseases -- Diagnosis; Subject Term: BIOMEDICAL signal processing; Subject Term: EVOKED potentials (Electrophysiology); Author-Supplied Keyword: electroencephalography (EEG); Author-Supplied Keyword: event-related spectral perturbation (ERSP); Author-Supplied Keyword: familiarity; Author-Supplied Keyword: independent component analysis (ICA); Author-Supplied Keyword: perceptual learning; Author-Supplied Keyword: ranging; Number of Pages: 15p; Document Type: Article L3 - 10.3389/fnins.2014.00396 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101662740&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blunt, Shannon D. AU - Mccormick, Patrick AU - Higgins, Thomas AU - Rangaswamy, Muralidhar T1 - Physical emission of spatially-modulated radar. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2014/12// VL - 8 IS - 9 M3 - Article SP - 1234 EP - 1246 PB - Institution of Engineering & Technology SN - 17518784 AB - Leveraging the recent development of a physical implementation of arbitrary polyphase codes as spectrally well-contained waveforms, the notion of spatial modulation is developed whereby a time-varying beampattern is incorporated into the physical emission of an individual pulse. This subset of the broad category of MIMO radar is inspired by the operation of fixational eye movement within the human eye to enhance visual acuity and also subsumes the notion of the frequency-diverse array for application to pulsed radar. From this spatial modulation framework, some specific emission examples are evaluated in terms of resolution and sidelobe levels for the delay and angle domains. The impact of spatial modulation upon spectral content is also considered and possible joint delay-angle emission design criteria are suggested. Simulation results of selected target arrangements demonstrate the promise of enhanced discrimination and the basis for the development of future cognitive radar capabilities that may mimic salient aspects of the visual cortex. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR KW - DETECTORS KW - ELECTRONIC systems KW - RADIO technology KW - ELECTRONIC pulse techniques N1 - Accession Number: 100031052; Blunt, Shannon D. 1; Email Address: sdblunt@ittc.ku.edu Mccormick, Patrick 1 Higgins, Thomas 2 Rangaswamy, Muralidhar 3; Affiliation: 1: Electrical Engineering & Computer Science Department, University of Kansas, 2335 Irving Hill Road, Lawrence, KS 66045, USA 2: Radar Division, US Naval Research Laboratory, Building 60, 4555 Overlook Ave. SW, Washington, DC 20375, USA 3: Sensors Directorate, US Air Force Research Laboratory, Building 620, 2241 Avionics Circle, Wright-Patterson AFB, OH 45433, USA; Source Info: 2014, Vol. 8 Issue 9, p1234; Subject Term: RADAR; Subject Term: DETECTORS; Subject Term: ELECTRONIC systems; Subject Term: RADIO technology; Subject Term: ELECTRONIC pulse techniques; Number of Pages: 13p; Document Type: Article L3 - 10.1049/iet-rsn.2014.0057 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100031052&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Garmatyuk, Dmitriy AU - Jameson, Brian AU - Cole, Robert AU - Yu Tong Morton AU - Mudaliar, Saba T1 - Target scene frequency diversity exploitation with ultra-wideband orthogonal frequency division multiplexing radar. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2014/12// VL - 8 IS - 9 M3 - Article SP - 1247 EP - 1254 PB - Institution of Engineering & Technology SN - 17518784 AB - This paper concerns experimental investigation of the frequency-domain approach to target scene sensing using ultra-wideband orthogonal frequency division multiplexing software-defined radar. Individual spectral components of the radar signal (sub-carriers) are analysed with the aim of performing their adaptive selection and establishing similarity of the observed response to the previously collected responses of various target scenes. By performing this analysis, the authors are effectively utilising frequency diversity of targets for detection purposes. A low-power, short-range radar system built at Miami University is used to apply this approach to target detection with generalised-likelihood ratio test (GLRT) and frequency profile matching (FPM). Experimental results indicate good promise of FPM, which performed equally to, or outperformed GLRT in all scenarios. Results of correct detection and false alarm rates are shown and discussed, along with theoretical descriptions of the detection approaches. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE & time KW - RADAR KW - DETECTORS KW - ELECTRONIC systems KW - COMPUTER software N1 - Accession Number: 100030932; Garmatyuk, Dmitriy 1; Email Address: garmatd@miamiOH.edu Jameson, Brian 2 Cole, Robert 1 Yu Tong Morton 1,3 Mudaliar, Saba 4; Affiliation: 1: Department of Electrical and Computer Engineering, Miami University, Oxford, OH 45056, USA 2: Kranze Technology Solutions, Inc., Prospect Heights, IL 60070, USA 3: Department of ECE, Colorado State University, Fort Collins, CO 80523, USA 4: Air Force Research Laboratory, WPAFB, OH 45433, USA; Source Info: 2014, Vol. 8 Issue 9, p1247; Subject Term: SPACE & time; Subject Term: RADAR; Subject Term: DETECTORS; Subject Term: ELECTRONIC systems; Subject Term: COMPUTER software; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; Number of Pages: 8p; Document Type: Article L3 - 10.1049/iet-rsn.2014.0024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100030932&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stevens, Sean R. AU - Jackson, Julie Ann T1 - Emitter selection criteria for passive multistatic synthetic aperture radar imaging. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2014/12// VL - 8 IS - 9 M3 - Article SP - 1267 EP - 1279 PB - Institution of Engineering & Technology SN - 17518784 AB - Passive radar provides a means of spectrum sharing in a congested environment. In passive radar, the radar design problem is one of emitter selection, rather than waveform optimisation. This study combines relevant criteria (signal-to-noise ratio, ambiguity function integrated sidelobes, effective multistatic resolution area and contrast ratio) in a multiobjective optimisation to select subsets of available emitters for passive multistatic synthetic aperture radar (SAR). Extensions to well-known monostatic and bistatic performance criteria are defined for the multistatic SAR case. Assumed limitations in the number of available receiver channels constrain the emitter selection. The proposed emitter selection framework is demonstrated for a simulated scenario of 24 analogue and digital emitters, with a constraint of four receiver channels. Results indicate that the proposed ranking successfully differentiates between emitter sets resulting in good images and those sets resulting in poor images, providing a first step towards formulating a general image quality equation for multistatic SAR [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYNTHETIC apertures KW - IMAGING systems KW - RADAR KW - DETECTORS KW - ELECTRONIC systems N1 - Accession Number: 100030916; Stevens, Sean R. 1 Jackson, Julie Ann 2; Email Address: julie.jackson@afit.edu; Affiliation: 1: Air Force Research Laboratory, Dayton, OH 45433, USA 2: Department of Electrical and Computer Engineering, Air Force Institute of Technology, Dayton, OH 45433, USA; Source Info: 2014, Vol. 8 Issue 9, p1267; Subject Term: SYNTHETIC apertures; Subject Term: IMAGING systems; Subject Term: RADAR; Subject Term: DETECTORS; Subject Term: ELECTRONIC systems; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1049/iet-rsn.2014.0014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100030916&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Michalak, Travis AU - Emo, Stephen AU - Ervin, Jamie T1 - Control strategy for aircraft vapor compression system operation. JO - International Journal of Refrigeration JF - International Journal of Refrigeration Y1 - 2014/12// VL - 48 M3 - Article SP - 10 EP - 18 SN - 01407007 AB - Future, high-performance military aircraft will likely use vapor compression systems to manage the temperatures of multiple loads which are time-varying, dissimilar, and have high-turndown ratios. Experiments were performed using a scaled vapor compression system over a hypothetical flight profile to compare the temperature control performance and energy consumption of a superheat and capacity control strategy (Method A) against those of an alternate cycle-based strategy (Method B). Method B modulated the compressor speed to control the saturated suction temperature (SST) and modulated the expansion valves to directly control the evaporator heat load outlet temperature. The vapor compression system used two evaporators with dynamic and dissimilar heat loads. Method B offered better temperature control performance for the profile examined. The coefficient of performance (COP) of Method B was slightly greater than that of Method A. However if the overcooling produced by Method A was penalized, the useful COP of Method B would be meaningfully higher. Lastly, Method B did not require back pressure control valves. The use of fewer components is important for aircraft weight and reliability concerns. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Refrigeration is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VAPOR compression cycle KW - LOADS (Mechanics) KW - PRESSURE control KW - RELIABILITY (Engineering) KW - AIRPLANES KW - Aircraft KW - Avion KW - Control KW - Gestion thermique KW - Régulation KW - Système à compression de vapeur KW - Thermal management KW - Vapor compression system N1 - Accession Number: 99898311; Michalak, Travis 1 Emo, Stephen 2 Ervin, Jamie 2; Email Address: jervin1@udayton.edu; Affiliation: 1: Air Force Research Laboratory, 1950 5th St., Wright-Patterson AFB, OH 45433-7251, USA 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0044, USA; Source Info: Dec2014, Vol. 48, p10; Subject Term: VAPOR compression cycle; Subject Term: LOADS (Mechanics); Subject Term: PRESSURE control; Subject Term: RELIABILITY (Engineering); Subject Term: AIRPLANES; Author-Supplied Keyword: Aircraft; Author-Supplied Keyword: Avion; Author-Supplied Keyword: Control; Author-Supplied Keyword: Gestion thermique; Author-Supplied Keyword: Régulation; Author-Supplied Keyword: Système à compression de vapeur; Author-Supplied Keyword: Thermal management; Author-Supplied Keyword: Vapor compression system; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijrefrig.2014.08.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99898311&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR T1 - Tai Chi and meditation-plus-exercise benefit neural substrates of executive function: a cross-sectional, controlled study. AU - Hawkes, Teresa D. AU - Manselle, Wayne AU - Woollacott, Marjorie H. JO - Journal of Complementary & Integrative Medicine JF - Journal of Complementary & Integrative Medicine Y1 - 2014/12// VL - 11 IS - 4 SP - 279 EP - 288 SN - 15533840 N1 - Accession Number: 99344494; Author: Hawkes, Teresa D.: 1 Author: Manselle, Wayne: 2 Author: Woollacott, Marjorie H.: 2 ; Author Affiliation: 1 711 Human Performance Wing, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH; University of Oklahoma, 455 W. Lindsey St., Dale Hall Tower 705, Norman, OK 73019, USA: 2 University of Oregon, Eugene, OR, USA; No. of Pages: 10; Language: English; Publication Type: Article; Update Code: 20141111 N2 - Background: We report the first controlled study of Tai Chi effects on the P300 event-related potential, a neuroelectric index of human executive function. Tai Chi is a form of exercise and moving meditation. Exercise and meditation have been associated with enhanced executive function. This cross-sectional, controlled study utilized the P300 event-related potential (ERP) to compare executive network neural function between self-selected long-term Tai Chi, meditation, aerobic fitness, and sedentary groups. We hypothesized that because Tai Chi requires moderate aerobic and mental exertion, this group would show similar or better executive neural function compared to meditation and aerobic exercise groups. We predicted all health training groups would outperform sedentary controls. Methods: Fifty-four volunteers (Tai Chi, n=10; meditation, n=16; aerobic exercise, n=16; sedentary, n=12) were tested with the Rockport 1-mile walk (estimated VO2 Max), a well-validated measure of aerobic capacity, and an ecologically valid visuo-spatial, randomized, alternating runs Task Switch test during dense-array electroencephalographic (EEG) recording. Results: Only Tai Chi and meditation plus exercise groups demonstrated larger P3b ERP switch trial amplitudes compared to sedentary controls. Conclusions: Our results suggest long-term Tai Chi practice, and meditation plus exercise may benefit the neural substrates of executive function. ABSTRACT FROM AUTHOR KW - *COGNITION KW - *EXERCISE KW - *MEDITATION KW - *NEUROPHYSIOLOGY KW - *TAI chi KW - *TREATMENT effectiveness KW - ANALYSIS of covariance KW - MULTIVARIATE analysis KW - OBSERVATION (Scientific method) KW - RESEARCH -- Finance KW - STATISTICS KW - DATA analysis KW - CONTROL groups (Research) KW - CROSS-sectional method KW - DATA analysis -- Software KW - DESCRIPTIVE statistics KW - OREGON KW - aging KW - executive function KW - exercise effects on cognition KW - meditation KW - P3b KW - Tai Chi UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=99344494&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 103915915 T1 - Tai Chi and meditation-plus-exercise benefit neural substrates of executive function: a cross-sectional, controlled study. AU - Hawkes, Teresa D. AU - Manselle, Wayne AU - Woollacott, Marjorie H. Y1 - 2014/12// N1 - Accession Number: 103915915. Language: English. Entry Date: 20141115. Revision Date: 20150710. Publication Type: Journal Article; research; tables/charts. Journal Subset: Alternative/Complementary Therapies; Biomedical; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Grant Information: This work supported by a Francisco J. Varela Research Award, Mind & Life Institute, 2007, and an NIH T-32 Systems Training Grant Appointment (Grant # T32-GM07257), Institute of Neuroscience, University of Oregon, 2008.. KW - Meditation KW - Tai Chi KW - Exercise KW - Cognition KW - Treatment Outcomes KW - Nervous System Physiology KW - Cross Sectional Studies KW - Oregon KW - Human KW - Male KW - Female KW - Observational Methods KW - Aged KW - Middle Age KW - Adult KW - Descriptive Statistics KW - Data Analysis Software KW - Post Hoc Analysis KW - Multivariate Analysis of Covariance KW - Funding Source KW - Control Group SP - 279 EP - 288 JO - Journal of Complementary & Integrative Medicine JF - Journal of Complementary & Integrative Medicine JA - J COMPLEMENT INTEGR MED VL - 11 IS - 4 CY - , PB - De Gruyter AB - Background: We report the first controlled study of Tai Chi effects on the P300 event-related potential, a neuroelectric index of human executive function. Tai Chi is a form of exercise and moving meditation. Exercise and meditation have been associated with enhanced executive function. This cross-sectional, controlled study utilized the P300 event-related potential (ERP) to compare executive network neural function between self-selected long-term Tai Chi, meditation, aerobic fitness, and sedentary groups. We hypothesized that because Tai Chi requires moderate aerobic and mental exertion, this group would show similar or better executive neural function compared to meditation and aerobic exercise groups. We predicted all health training groups would outperform sedentary controls. Methods: Fifty-four volunteers (Tai Chi, n=10; meditation, n=16; aerobic exercise, n=16; sedentary, n=12) were tested with the Rockport 1-mile walk (estimated VO2 Max), a well-validated measure of aerobic capacity, and an ecologically valid visuo-spatial, randomized, alternating runs Task Switch test during dense-array electroencephalographic (EEG) recording. Results: Only Tai Chi and meditation plus exercise groups demonstrated larger P3b ERP switch trial amplitudes compared to sedentary controls. Conclusions: Our results suggest long-term Tai Chi practice, and meditation plus exercise may benefit the neural substrates of executive function. SN - 1553-3840 AD - 711 Human Performance Wing, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH; University of Oklahoma, 455 W. Lindsey St., Dale Hall Tower 705, Norman, OK 73019, USA AD - University of Oregon, Eugene, OR, USA DO - 10.1515/jcim-2013-0031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=103915915&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Grier, Benjamin AU - Alyanak, Edward AU - White, Michael AU - Camberos, José AU - Figliola, Richard T1 - Numerical integration techniques for discontinuous manufactured solutions. JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2014/12// VL - 278 M3 - Article SP - 193 EP - 203 SN - 00219991 AB - When applying the method of manufactured solutions (MMS) on computational fluid dynamic software, determining the exact solutions and source terms for finite volume codes where the stored value is an integrated average over the control volume is non-trivial and not frequently discussed. MMS with discontinuities further complicates the problem of determining these values. In an effort to adapt the standard MMS procedure to solutions that contain discontinuities we show that Newton–Cotes and Gauss quadrature numerical integration methods exhibit high error, first order limitations. We propose a new method for determining the exact solutions and source terms on a uniform structured grid containing shock discontinuities by performing linearly and quadratically exact transformations on split cells. Transformations are performed on triangular and quadrilateral elements of a systematically divided discontinuous cell. Using a quadratic transformation in conjunction with a nine point Gauss quadrature method, a minimum of 4th order accuracy is achieved for fully general solutions and shock shapes. A linear approximation of curved shocks is also experimentally shown to be 2nd order accurate. The numerical integration method is then applied to a CFD code using simple discontinuous manufactured solutions which return consistent 1st order convergence values. The result is an important step towards being able to use MMS to verify solutions with discontinuities. This work also highlights the use of higher order numerical integration techniques for continuous and discontinuous solutions that are required for MMS on higher order finite volume codes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MANUFACTURING industries KW - COMPUTATIONAL fluid dynamics KW - FINITE volume method KW - QUADRILATERALS KW - APPROXIMATION theory KW - Discontinuity KW - Method of manufactured solutions KW - Numerical integration N1 - Accession Number: 108294352; Grier, Benjamin 1; Email Address: bgrier@clemson.edu Alyanak, Edward 2; Email Address: Edward.Alyanak@wpafb.af.mil White, Michael 2; Email Address: Michael.White.ctr@wpafb.af.mil Camberos, José 2; Email Address: jose.camberos@wpafb.af.mil Figliola, Richard 1; Email Address: fgliola@clemson.edu; Affiliation: 1: Mechanical Engineering, Clemson University, Clemson, SC 29634, USA 2: U.S. Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: Dec2014, Vol. 278, p193; Subject Term: MANUFACTURING industries; Subject Term: COMPUTATIONAL fluid dynamics; Subject Term: FINITE volume method; Subject Term: QUADRILATERALS; Subject Term: APPROXIMATION theory; Author-Supplied Keyword: Discontinuity; Author-Supplied Keyword: Method of manufactured solutions; Author-Supplied Keyword: Numerical integration; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.jcp.2014.08.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108294352&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cox, Geofrey S. AU - Palazotto, Anthony N. AU - Brown, Jeffrey M. AU - George, Tommy J. T1 - Traveling Wave Excitation: A Method to Produce Consistent Experimental Results. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2014/12// VL - 136 IS - 12 M3 - Article SP - 1 EP - 8 SN - 07424795 AB - This paper describes the experimental framework to establish consistent, repeatable results associated with a traveling wave excitation system. The experiment is employed to ascertain the forced response and mistuning patterns for rotors. Several items attributing to existing experimental inconsistencies were identified and their effects were realized during this research. These experimental items were signal input locations, response measurement locations, and rotor alignment position. Accounting for these experimental variables, this paper develops a process which enables consistent rotor forced response results, independent of its orientation on the test stand. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRAVELING waves (Physics) KW - RESEARCH KW - WAVES (Physics) KW - STANDING waves KW - ROTORS KW - ROTATING machinery N1 - Accession Number: 99862421; Cox, Geofrey S. 1; Email Address: geofrey.cox@afit.edu Palazotto, Anthony N. 2; Email Address: anthony.palazotto@afit.edu Brown, Jeffrey M. 3; Email Address: jeffrey.brown.70@us.af.mil George, Tommy J. 3; Email Address: tommy.george@us.af.mil; Affiliation: 1: Major, United States Air Force, Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433 2: Distinguished Professor of Aeronautical Engineering, Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433 3: Engine Integrity, Turbine Engine Division, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433; Source Info: Dec2014, Vol. 136 Issue 12, p1; Subject Term: TRAVELING waves (Physics); Subject Term: RESEARCH; Subject Term: WAVES (Physics); Subject Term: STANDING waves; Subject Term: ROTORS; Subject Term: ROTATING machinery; Number of Pages: 8p; Document Type: Article L3 - 10.1115/1.4027744 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99862421&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CASE AU - Bertha, Carlos T1 - Engineering Ethics in a Combat Environment: The LNQA Timecard Dilemma. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2014/12// VL - 13 IS - 4 M3 - Case Study SP - 381 EP - 383 PB - Routledge SN - 15027570 AB - The article describes the case of timecard management submitted by Local National Quality Assurance (LNQA) representatives in Afghanistan to the Resident Engineer (RE) of the U.S. Army Corps of Engineers (USACE). The RE investigated the veracity of the timecards submitted and found several lapses including similar work hours for all LNQA, the relationship of LNQA with civilian contractors of the USACE projects, and the solutions adopted by the RE to change the LNQA reporting. KW - AMERICAN military assistance KW - CIVIL-military relations KW - MILITARY engineering KW - MILITARY engineers KW - AFGHANISTAN KW - UNITED States. Army. Corps of Engineers N1 - Accession Number: 100438949; Bertha, Carlos 1; Affiliation: 1: United States Air Force Academy, Colorado, USA; Source Info: Dec2014, Vol. 13 Issue 4, p381; Subject Term: AMERICAN military assistance; Subject Term: CIVIL-military relations; Subject Term: MILITARY engineering; Subject Term: MILITARY engineers; Subject Term: AFGHANISTAN; Company/Entity: UNITED States. Army. Corps of Engineers; NAICS/Industry Codes: 237990 Other Heavy and Civil Engineering Construction; Number of Pages: 3p; Document Type: Case Study L3 - 10.1080/15027570.2014.994981 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100438949&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, James L. T1 - Case Study Commentary and Analysis: Rules, Consequences, Virtues, and Engineering Ethics. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2014/12// VL - 13 IS - 4 M3 - Opinion SP - 384 EP - 385 PB - Routledge SN - 15027570 AB - The article describes the case of timecard management submitted by Local National Quality Assurance (LNQA) representatives in Afghanistan to the Resident Engineer (RE) of the U.S. Army Corps of Engineers (USACE). The author cites several issues in this case including corruption in the way military contracts are given to civilians, the necessity of contract experts and the payment given to LNQA to stop corruption. The importance of applying ethical considerations in contracts is emphasized. KW - AMERICAN military assistance KW - DEFENSE contracts KW - CIVIL-military relations KW - ARMED Forces -- Corrupt practices KW - AFGHANISTAN KW - CORRUPT practices KW - UNITED States. Army. Corps of Engineers N1 - Accession Number: 100438950; Cook, James L. 1; Affiliation: 1: United States Air Force Academy, Colorado, USA; Source Info: Dec2014, Vol. 13 Issue 4, p384; Subject Term: AMERICAN military assistance; Subject Term: DEFENSE contracts; Subject Term: CIVIL-military relations; Subject Term: ARMED Forces -- Corrupt practices; Subject Term: AFGHANISTAN; Subject Term: CORRUPT practices; Company/Entity: UNITED States. Army. Corps of Engineers; Number of Pages: 2p; Document Type: Opinion L3 - 10.1080/15027570.2014.994987 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100438950&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 107805306 T1 - Cast saw burns: evaluation of simple techniques for reducing the risk of thermal injury. AU - Puddy, Alan C AU - Sunkin, Jon A AU - Aden, James K AU - Walick, Kristina S AU - Hsu, Joseph R Y1 - 2014/12//2014 Dec N1 - Accession Number: 107805306. Language: English. Entry Date: 20150612. Revision Date: 20150712. Publication Type: Journal Article; research. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Pediatric Care. NLM UID: 8109053. KW - Burns -- Prevention and Control KW - Orthopedic Fixation Devices KW - Device Removal -- Adverse Effects KW - Device Removal -- Methods KW - Heat -- Adverse Effects KW - Propanols KW - Burns -- Etiology KW - Gels KW - Human KW - Patient Safety KW - Ultrasonography KW - Water SP - e63 EP - 6 JO - Journal of Pediatric Orthopedics JF - Journal of Pediatric Orthopedics JA - J PEDIATR ORTHOP VL - 34 IS - 8 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 0271-6798 AD - *Department of Orthopaedics and Rehabilitation, San Antonio Military Medical Center, United States Air Force Medical Corps tUnited States Army Institute of Surgical Research tCarolinas Medical Center Department of Orthopaedic Surgery, Charlotte, NC. U2 - PMID: 25075891. DO - 10.1097/BPO.0000000000000274 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107805306&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Naito, Clay AU - Beacraft, Mark AU - Hoemann, John AU - Shull, Jonathan AU - Salim, Hani AU - Bewick, Bryan T1 - Blast Performance of Single-Span Precast Concrete Sandwich Wall Panels. JO - Journal of Structural Engineering JF - Journal of Structural Engineering Y1 - 2014/12// VL - 140 IS - 12 M3 - Article SP - 1 SN - 07339445 AB - A research program was conducted to assess the capability of conventional non-load-bearing insulated precast concrete exterior wall panels to withstand blast loadings. Typical construction details from the tilt-up and prestressed concrete industries were examined. The sensitivity of insulation type, reinforcement, foam thickness, and shear tie type on the flexural resistance was assessed. Forty-two single-span static experiments were conducted on 14 different panel designs. From the results of these experiments, resistance functions and deformation limits for insulated concrete sandwich panels were determined. The resistance functions were used to develop predictive dynamic models for panels subjected to blast demands. The models were found to be accurate in comparison to measurements from four full-scale blast detonations. The findings of the research indicate that both prestressed and non-prestressed insulated concrete wall panels meet current rotational limits defined by the U.S. Army Corps of Engineers for protective structures. Simplified methods for modeling the pressure-deformation characteristics of insulated panels can be used to approximate the peak dynamic deformation and reaction loads. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Structural Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRECAST concrete construction KW - RESEARCH KW - BLAST effect KW - WALL panels -- Design & construction KW - PRECAST concrete KW - SANDWICH construction (Materials) KW - SANDWICH construction (Materials) -- Testing KW - Blasting KW - Composite beams KW - Dynamic tests KW - Prestressed concrete KW - Sandwich panels KW - Shock and vibratory effects N1 - Accession Number: 99458563; Naito, Clay 1 Beacraft, Mark 2 Hoemann, John 3 Shull, Jonathan 4 Salim, Hani 5 Bewick, Bryan 6; Affiliation: 1: Associate Professor, Dept. of Civil and Environmental Engineering, Lehigh Univ. ATLSS Center, 117 ATLSS Dr., Bethlehem, PA 18015 (corresponding author). E-mail: 2: Graduate Student Researcher, Dept. of Civil and Environmental Engineering, Lehigh Univ. ATLSS Center, 117 ATLSS Dr., Bethlehem, PA 18015. E-mail: 3: Research Civil Engineer, U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Rd., CEERD-GS-V, Bldg. 5001, Vicksburg, MS 39180-6199; formerly, Air Force Research Laboratory Support Contractor, Applied Research Associates, Inc., Tyndall AFB, FL. 4: Structural Engineer, Black & Veatch, Federal Service Division, 1805 Meadow Moor Dr., Webb City, MO 64870. 5: Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of Missouri, E2509 Lafferre Hall, Columbia, MO 65211-2200. 6: Project Engineer, Protection Engineering Consultants, 14144 Trautwein Rd., Austin, TX 78737; formerly, Air Force Research Laboratory, Tyndall AFB, Panama City, FL 32403.; Source Info: Dec2014, Vol. 140 Issue 12, p1; Subject Term: PRECAST concrete construction; Subject Term: RESEARCH; Subject Term: BLAST effect; Subject Term: WALL panels -- Design & construction; Subject Term: PRECAST concrete; Subject Term: SANDWICH construction (Materials); Subject Term: SANDWICH construction (Materials) -- Testing; Author-Supplied Keyword: Blasting; Author-Supplied Keyword: Composite beams; Author-Supplied Keyword: Dynamic tests; Author-Supplied Keyword: Prestressed concrete; Author-Supplied Keyword: Sandwich panels; Author-Supplied Keyword: Shock and vibratory effects; NAICS/Industry Codes: 238130 Framing Contractors; NAICS/Industry Codes: 327390 Other Concrete Product Manufacturing; NAICS/Industry Codes: 321992 Prefabricated Wood Building Manufacturing; NAICS/Industry Codes: 238120 Structural Steel and Precast Concrete Contractors; Number of Pages: 1p; Document Type: Article L3 - 10.1061/(ASCE)ST.1943-541X.0001020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99458563&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zarras, Peter AU - Buhrmaster, Diane AU - Webber, Cindy AU - Anderson, Nicole AU - Stenger-Smith, John D. AU - Goodman, Paul A. T1 - Poly(2,5-bis(N-Methyl-N-Hexylamino)Phenylene Vinylene) (BAM-PPV) as Pretreatment Coating for Aerospace Applications: Laboratory and Field Studies. JO - Materials (1996-1944) JF - Materials (1996-1944) Y1 - 2014/12// VL - 7 IS - 12 M3 - Article SP - 8088 EP - 8104 SN - 19961944 AB - In this study, an electroactive polymer (EAP), poly(2,5-bis(N-methyl-Nhexylamino) phenylene vinylene) (BAM-PPV) was investigated as a potential alternative surface pretreatment for hexavalent chromium (Cr(VI))-based aerospace coatings. BAM-PPV was tested as a pretreatment coating on an aerospace aluminum alloy (AA2024-T3) substrate in combination with a non-Cr(VI) epoxy primer and a polyurethane Advanced Performance Coating (APC) topcoat. This testing was undertaken to determine BAM-PPV's adhesion, corrosion-inhibition, compatibility and survivability in laboratory testing and during outdoor field-testing. BAM-PPV showed excellent adhesion and acceptable corrosion performance in laboratory testing. The BAM-PPV aerospace coating system (BAM-PPV, non-Cr(VI) epoxy primer and polyurethane APC topcoat) was field tested for one year on the rear hatch door of the United States Air Force C-5 cargo plane. After one year of field testing there was no evidence of delamination or corrosion of the BAM-PPV aerospace coating system. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials (1996-1944) is the property of MDPI Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONDUCTING polymers KW - SURFACE coatings KW - SURFACE preparation KW - CHROMIUM KW - ALUMINUM alloys KW - CORROSION & anti-corrosives -- Prevention KW - ADHESION KW - 5-bis(N-methyl-N-hexylamino)phenylene vinylene) (BAM-PPV) KW - accelerated weathering tests KW - field studies KW - hexavalent chromium (CrVI) KW - passivation KW - poly(2 N1 - Accession Number: 100139682; Zarras, Peter 1; Email Address: peter.zarras@navy.mil Buhrmaster, Diane 2; Email Address: diane.buhrmaster.ctr@us.af.mil Webber, Cindy 1; Email Address: cynthia.webber@navy.mil Anderson, Nicole 1; Email Address: nicole.anderson@navy.mil Stenger-Smith, John D. 1; Email Address: john.stenger-smith@navy.mil Goodman, Paul A. 1; Email Address: paul.goodman@navy.mil; Affiliation: 1: Naval Air Warfare Center Weapons Division (NAWCWD), Polymer Science & Engineering Branch (Code 4L4200D), 1900 N. Knox Road (Stop 6303), China Lake, CA 93555, USA 2: Air Force Research Laboratory/Logistics Systems Support Branch Coatings Technology Integration Office, UDRI Contractor Support, Bldg 1661, Rm C-110, Wright-Patterson AFB, University of Dayton Research Institute, Nonstructural Materials Division, 300 College Park, Dayton, OH 45469, USA; Source Info: 2014, Vol. 7 Issue 12, p8088; Subject Term: CONDUCTING polymers; Subject Term: SURFACE coatings; Subject Term: SURFACE preparation; Subject Term: CHROMIUM; Subject Term: ALUMINUM alloys; Subject Term: CORROSION & anti-corrosives -- Prevention; Subject Term: ADHESION; Author-Supplied Keyword: 5-bis(N-methyl-N-hexylamino)phenylene vinylene) (BAM-PPV); Author-Supplied Keyword: accelerated weathering tests; Author-Supplied Keyword: field studies; Author-Supplied Keyword: hexavalent chromium (CrVI); Author-Supplied Keyword: passivation; Author-Supplied Keyword: poly(2; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 238320 Painting and Wall Covering Contractors; Number of Pages: 17p; Illustrations: 3 Color Photographs, 1 Diagram, 7 Charts; Document Type: Article L3 - 10.3390/ma7128088 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100139682&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gallagher, Mark A. AU - Caswell, David J. AU - Hanlon, Brian AU - Hill, Justin M. T1 - Rethinking the Hierarchy of Analytic Models and Simulations for Conflicts. JO - Military Operations Research JF - Military Operations Research J1 - Military Operations Research PY - 2014/12// Y1 - 2014/12// VL - 19 IS - 4 M3 - Article SP - 15 EP - 24 SN - 10825983 AB - The article focuses on the need of change in hierarchy of analytic models and simulations (M&S) used by analysts to support defense decisions and conflicts management. Topics discussed include incorporation of additional defense enterprises, government and non-government powers into hierarchy, hierarchy of simulation including high and low resolution models and importance of analytical simulations. KW - ANALYTIC hierarchy process KW - SIMULATION methods & models KW - DECISION making in military policy KW - CONFLICT management KW - DEFENSE industries N1 - Accession Number: 100461035; Source Information: 2014, Vol. 19 Issue 4, p15; Subject Term: ANALYTIC hierarchy process; Subject Term: SIMULATION methods & models; Subject Term: DECISION making in military policy; Subject Term: CONFLICT management; Subject Term: DEFENSE industries; Subject Term: ; Number of Pages: 10p; ; Document Type: Article; L3 - 10.5711/1082598319415 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=100461035&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - C Jiang AU - C Carter T1 - Absolute atomic oxygen density measurements for nanosecond-pulsed atmospheric-pressure plasma jets using two-photon absorption laser-induced fluorescence spectroscopy. JO - Plasma Sources Science & Technology JF - Plasma Sources Science & Technology Y1 - 2014/12// VL - 23 IS - 6 M3 - Article SP - 1 EP - 1 SN - 09630252 AB - Nanosecond-pulsed plasma jets that are generated under ambient air conditions and free from confinement of electrodes have become of great interest in recent years due to their promising applications in medicine and dentistry. Reactive oxygen species that are generated by nanosecond-pulsed, room-temperature non-equilibrium He–O2 plasma jets among others are believed to play an important role during the bactericidal or sterilization processes. We report here absolute measurements of atomic oxygen density in a 1 mm-diameter He/(1%)O2 plasma jet at atmospheric pressure using two-photon absorption laser-induced fluorescence spectroscopy. Oxygen number density on the order of 1013 cm−3 was obtained in a 150 ns, 6 kV single-pulsed plasma jet for an axial distance up to 5 mm above the device nozzle. Temporally resolved O density measurements showed that there are two maxima, separated in time by 60–70 µs, and a total pulse duration of 260−300 µs. Electrostatic modeling indicated that there are high-electric-field regions near the nozzle exit that may be responsible for the observed temporal behavior of the O production. Both the field-distribution-based estimation of the time interval for the O number density profile and a pulse-energy-dependence study confirmed that electric-field-dependent, direct and indirect electron-induced processes play important roles for O production. [ABSTRACT FROM AUTHOR] AB - Copyright of Plasma Sources Science & Technology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXYGEN -- Analysis KW - ATMOSPHERIC pressure KW - PLASMA jets KW - FLUORESCENCE spectroscopy KW - TWO-photon-spectroscopy KW - ACTIVE oxygen KW - TEMPERATURE effect N1 - Accession Number: 99789064; C Jiang 1,2; Email Address: cjiang@odu.edu C Carter 3; Affiliation: 1: Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, VA, USA 2: Ming Hsieh Department of Electrical Engineering-Electrophysics, University of Southern California, Los Angeles, CA, USA 3: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson Air Force Base, OH,USA; Source Info: Dec2014, Vol. 23 Issue 6, p1; Subject Term: OXYGEN -- Analysis; Subject Term: ATMOSPHERIC pressure; Subject Term: PLASMA jets; Subject Term: FLUORESCENCE spectroscopy; Subject Term: TWO-photon-spectroscopy; Subject Term: ACTIVE oxygen; Subject Term: TEMPERATURE effect; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0963-0252/23/6/065006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99789064&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - J B Schmidt AU - N Jiang AU - B N Ganguly T1 - Nitric oxide PLIF measurement in a point-to-plane pulsed discharge in vitiated air of a propane/air flame. JO - Plasma Sources Science & Technology JF - Plasma Sources Science & Technology Y1 - 2014/12// VL - 23 IS - 6 M3 - Article SP - 1 EP - 1 SN - 09630252 AB - The effect of a point-to-plane pulsed discharge on the vitiated downstream of a propane/air flame has been investigated by phase-locked NO planar laser-induced-fluorescence (PLIF) measurements. Phase-locked NO PLIF measurements with the variation of pulsed plasma energy, equivalence ratio and applied voltage rise time have been performed. Fast rise time (25 ns) and slower rise time (150 ns) high-voltage pulsers are used to produce NO radical densities greater than the ambient flame-produced NO radicals in lean, balanced and rich premixed flames. The pulsed plasma produced excess NO radical densities were found to decay to 50% level with time constants greater than 250 µs in the burnt gas regions with gas temperatures greater than 1000 K. The super-equilibrium NO populations were dependent on energy deposited and overall equivalence ratio, but independent of voltage pulse rise time for similar energy deposition per pulse. Due to long NO radical density decay lifetimes, super-equilibrium NO populations are convected away from production regions with the ambient flow and observed in downstream exhaust gas regions. [ABSTRACT FROM AUTHOR] AB - Copyright of Plasma Sources Science & Technology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER-induced fluorescence KW - NITRIC oxide -- Analysis KW - ELECTRIC discharges KW - PROPANE KW - NITROGEN oxides -- Analysis KW - FLAME N1 - Accession Number: 99789105; J B Schmidt 1; Email Address: JSchmidt@SpectralEnergies.com N Jiang 1 B N Ganguly 2; Affiliation: 1: Spectral Energies, LLC, Dayton OH 45433, USA 2: Air Force Research Laboratory, WPAFB OH 45433, USA; Source Info: Dec2014, Vol. 23 Issue 6, p1; Subject Term: LASER-induced fluorescence; Subject Term: NITRIC oxide -- Analysis; Subject Term: ELECTRIC discharges; Subject Term: PROPANE; Subject Term: NITROGEN oxides -- Analysis; Subject Term: FLAME; NAICS/Industry Codes: 454312 Liquefied petroleum gas (bottled gas) dealers; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 424710 Petroleum Bulk Stations and Terminals; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0963-0252/23/6/065005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99789105&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Christensen, James C. AU - Shiyanov, Pavel A. AU - Estepp, Justin R. AU - Schlager, John J. T1 - Lack of Association between Human Plasma Oxytocin and Interpersonal Trust in a Prisoner’s Dilemma Paradigm. JO - PLoS ONE JF - PLoS ONE Y1 - 2014/12// VL - 9 IS - 12 M3 - Article SP - 1 EP - 22 PB - Public Library of Science SN - 19326203 AB - Expanding interest in oxytocin, particularly the role of endogenous oxytocin in human social behavior, has created a pressing need for replication of results and verification of assay methods. In this study, we sought to replicate and extend previous results correlating plasma oxytocin with trust and trustworthy behavior. As a necessary first step, the two most commonly used commercial assays were compared in human plasma via the addition of a known quantity of exogenous oxytocin, with and without sample extraction. Plasma sample extraction was found to be critical in obtaining repeatable concentrations of oxytocin. In the subsequent trust experiment, twelve samples in duplicate, from each of 82 participants, were collected over approximately six hours during the performance of a Prisoner’s Dilemma task paradigm that stressed human interpersonal trust. We found no significant relationship between plasma oxytocin concentrations and trusting or trustworthy behavior. In light of these findings, previous published work that used oxytocin immunoassays without sample extraction should be reexamined and future research exploring links between endogenous human oxytocin and trust or social behavior should proceed with careful consideration of methods and appropriate biofluids for analysis. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BLOOD plasma KW - INTERPERSONAL relations KW - OXYTOCIN KW - NEUROCHEMISTRY KW - PRISONERS KW - DILEMMA KW - Altruistic behavior KW - Behavior KW - Behavioral economics KW - Behavioral neuroscience KW - Biochemistry KW - Biology and life sciences KW - Cognitive neuroscience KW - Cognitive psychology KW - Cognitive science KW - Deception KW - Neurochemistry KW - Neuroendocrinology KW - Neuroscience KW - Psychology KW - Research Article KW - Social cognition KW - Social sciences N1 - Accession Number: 100187864; Christensen, James C. 1 Shiyanov, Pavel A. 2 Estepp, Justin R. 1 Schlager, John J. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, United States of America 2: Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, Maryland, United States of America; Source Info: Dec2014, Vol. 9 Issue 12, p1; Subject Term: BLOOD plasma; Subject Term: INTERPERSONAL relations; Subject Term: OXYTOCIN; Subject Term: NEUROCHEMISTRY; Subject Term: PRISONERS; Subject Term: DILEMMA; Author-Supplied Keyword: Altruistic behavior; Author-Supplied Keyword: Behavior; Author-Supplied Keyword: Behavioral economics; Author-Supplied Keyword: Behavioral neuroscience; Author-Supplied Keyword: Biochemistry; Author-Supplied Keyword: Biology and life sciences; Author-Supplied Keyword: Cognitive neuroscience; Author-Supplied Keyword: Cognitive psychology; Author-Supplied Keyword: Cognitive science; Author-Supplied Keyword: Deception; Author-Supplied Keyword: Neurochemistry; Author-Supplied Keyword: Neuroendocrinology; Author-Supplied Keyword: Neuroscience; Author-Supplied Keyword: Psychology; Author-Supplied Keyword: Research Article; Author-Supplied Keyword: Social cognition; Author-Supplied Keyword: Social sciences; NAICS/Industry Codes: 414510 Pharmaceuticals and pharmacy supplies merchant wholesalers; Number of Pages: 22p; Document Type: Article L3 - 10.1371/journal.pone.0116172 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100187864&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reames, Donald AU - Cliver, Edward AU - Kahler, Stephen T1 - Variations in Abundance Enhancements in Impulsive Solar Energetic-Particle Events and Related CMEs and Flares. JO - Solar Physics JF - Solar Physics Y1 - 2014/12// VL - 289 IS - 12 M3 - Article SP - 4675 EP - 4689 PB - Springer Science & Business Media B.V. SN - 00380938 AB - We study event-to-event variations in the abundance enhancements of the elements He through Pb for Fe-rich impulsive solar energetic-particle (SEP) events, and their relationship with properties of associated coronal mass ejections (CMEs) and solar flares. Using a least-squares procedure we fit the power-law enhancement of element abundances as a function of their mass-to-charge ratio A/ Q to determine both the power and the coronal temperature (which determines Q) in each of 111 impulsive SEP events identified previously. Individual SEP events with the steepest element enhancements, e.g. ∼ ( A/ Q), tend to be smaller, lower-fluence events with steeper energy spectra that are associated with B- and C-class X-ray flares, with cooler (∼ 2.5 MK) coronal plasma, and with narrow (< 100), slower (< 700 km s) CMEs. On the other hand, higher-fluence SEP events have flatter energy spectra, less-dramatic heavy-element enhancements, e.g. ∼ ( A/ Q), and come from somewhat hotter coronal plasma (∼ 3.2 MK) associated with C-, M-, and even X-class X-ray flares and with wider CMEs. Enhancements in He/He are uncorrelated with those in heavy elements. However, events with He/He≥0.1 are even more strongly associated with narrow, slow CMEs, with cooler coronal plasma, and with B- and C-class X-ray flares than are other Fe-rich impulsive SEP events with smaller enhancements of He. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR energetic particles KW - CORONAL mass ejections KW - SOLAR flares KW - LEAST squares KW - MASS-to-charge ratio KW - SOLAR system KW - Coronal mass ejections KW - Solar energetic particles KW - Solar flares KW - Solar system abundances N1 - Accession Number: 99218877; Reames, Donald 1; Email Address: dvreames@umd.edu Cliver, Edward 2; Email Address: ecliver@nso.edu Kahler, Stephen 3; Email Address: stephen.kahler@kirtland.af.mil; Affiliation: 1: Institute for Physical Science and Technology, University of Maryland, College Park 20742-2431 USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Sunspot 88349 USA 3: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Avenue Kirtland AFB 87117 USA; Source Info: Dec2014, Vol. 289 Issue 12, p4675; Subject Term: SOLAR energetic particles; Subject Term: CORONAL mass ejections; Subject Term: SOLAR flares; Subject Term: LEAST squares; Subject Term: MASS-to-charge ratio; Subject Term: SOLAR system; Author-Supplied Keyword: Coronal mass ejections; Author-Supplied Keyword: Solar energetic particles; Author-Supplied Keyword: Solar flares; Author-Supplied Keyword: Solar system abundances; Number of Pages: 15p; Document Type: Article L3 - 10.1007/s11207-014-0589-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99218877&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Paul, R. AU - Zemlyanov, D. AU - Voevodin, A.A. AU - Roy, A.K. AU - Fisher, T.S. T1 - Methanol wetting enthalpy on few-layer graphene decorated hierarchical carbon foam for cooling applications. JO - Thin Solid Films JF - Thin Solid Films Y1 - 2014/12// VL - 572 M3 - Article SP - 169 EP - 175 SN - 00406090 AB - Vertical few-layer thick graphene petals are grown on macro-porous carbon foam surfaces having an intrinsic open porosity of 75%. This provides a hierarchical porous structure with a potential for surface adsorption/desorption or wetting/dewetting based thermal energy storage applications. Carbon foams have a combined advantage of large surface area and high thermal conductivity critical for thermal energy storage, but they are prone to oxidation and exhibit low adsorption enthalpies for lightweight hydrocarbons. Here we report graphene petal decoration of carbon foam surfaces and subsequent chemical modification through boron nitride incorporation in hexagonal carbon planes of both carbon foams and graphene petals. This chemically reactive hierarchical structure is characterized with FESEM, Raman, XRD, and XPS measurements. Methanol wetting enthalpy of this three-dimensional hierarchical material was measured with a solution calorimeter, and had shown a six fold increase (from 78 to 522 J/g of foam) as compared to the carbon foam prior to the surface modification. Influences of petal decoration on the surface morphology of carbon foam, BN chemical modification, structure and stoichiometry of the hierarchical material surface, and methanol wetting enthalpy improvement are discussed in detail. The applicability of this hierarchical porous material for thermal energy applications is established. [ABSTRACT FROM AUTHOR] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METHANOL KW - WETTING KW - ENTHALPY KW - GRAPHENE KW - CARBON foams KW - COOLING KW - Carbon foam KW - Few layer graphene petal KW - Specific surface area KW - Wetting enthalpy KW - X-ray photoelectron spectroscopy N1 - Accession Number: 99897397; Paul, R. 1; Email Address: paul24@purdue.edu Zemlyanov, D. 1 Voevodin, A.A. 2 Roy, A.K. 2 Fisher, T.S. 1,3; Affiliation: 1: Birck Nanotechnolgy Center, Purdue University, West Lafayette, IN 47907, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, OH 45433, USA 3: Department of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA; Source Info: Dec2014, Vol. 572, p169; Subject Term: METHANOL; Subject Term: WETTING; Subject Term: ENTHALPY; Subject Term: GRAPHENE; Subject Term: CARBON foams; Subject Term: COOLING; Author-Supplied Keyword: Carbon foam; Author-Supplied Keyword: Few layer graphene petal; Author-Supplied Keyword: Specific surface area; Author-Supplied Keyword: Wetting enthalpy; Author-Supplied Keyword: X-ray photoelectron spectroscopy; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.tsf.2014.08.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99897397&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Glavin, Nicholas R. AU - Jespersen, Michael L. AU - Check, Michael H. AU - Hu, Jianjun AU - Hilton, Al M. AU - Fisher, Timothy S. AU - Voevodin, Andrey A. T1 - Synthesis of few-layer, large area hexagonal-boron nitride by pulsed laser deposition. JO - Thin Solid Films JF - Thin Solid Films Y1 - 2014/12// VL - 572 M3 - Article SP - 245 EP - 250 SN - 00406090 AB - Pulsed laser deposition (PLD) has been investigated as a technique for synthesis of ultra-thin, few-layer hexagonal boron nitride ( h -BN) thin films on crystalline highly ordered pyrolytic graphite (HOPG) and sapphire (0001) substrates. The plasma-based processing technique allows for increased excitations of deposited atoms due to background nitrogen gas collisional ionizations and extended resonance time of the energetic species presence at the condensation surface. These processes permit growth of thin, polycrystalline h -BN at 700 °C, a much lower temperature than that required by traditional growth methods. Analysis of the as-deposited films reveals epitaxial-like growth on the nearly lattice matched HOPG substrate, resulting in a polycrystalline h -BN film, and amorphous BN ( a -BN) on the sapphire substrates, both with thicknesses of 1.5–2 nm. Stoichiometric films with boron-to-nitrogen ratios of unity were achieved by adjusting the background pressure within the deposition chamber and distance between the target and substrate. The reduction in deposition temperature and formation of stoichiometric, large-area h -BN films by PLD provide a process that is easily scaled-up for two-dimensional dielectric material synthesis and also present a possibility to produce very thin and uniform a -BN. [ABSTRACT FROM AUTHOR] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BORON nitride -- Synthesis KW - PULSED laser deposition KW - THIN films KW - SUBSTRATES (Materials science) KW - PYROLYTIC graphite KW - POLYCRYSTALS KW - Hexagonal-boron nitride KW - Nanoelectronics KW - Two dimensional materials N1 - Accession Number: 99897375; Glavin, Nicholas R. 1,2 Jespersen, Michael L. 1,3 Check, Michael H. 1 Hu, Jianjun 1,3 Hilton, Al M. 1,4 Fisher, Timothy S. 2 Voevodin, Andrey A. 1; Affiliation: 1: Nanoelectronic Materials Branch, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH 45433, USA 2: School of Mechanical Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, USA 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA 4: Wyle Laboratories, Dayton, OH 45433, USA; Source Info: Dec2014, Vol. 572, p245; Subject Term: BORON nitride -- Synthesis; Subject Term: PULSED laser deposition; Subject Term: THIN films; Subject Term: SUBSTRATES (Materials science); Subject Term: PYROLYTIC graphite; Subject Term: POLYCRYSTALS; Author-Supplied Keyword: Hexagonal-boron nitride; Author-Supplied Keyword: Nanoelectronics; Author-Supplied Keyword: Two dimensional materials; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.tsf.2014.07.059 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99897375&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wallace, R. M. AU - Stanek, D. AU - Griese, S. AU - Krulak, D. AU - Vora, N. M. AU - Pacha, L. AU - Kan, V. AU - Said, M. AU - Williams, C. AU - Burgess, T. H. AU - Clausen, S. S. AU - Austin, C. AU - Gabel, J. AU - Lehman, M. AU - Finelli, L. N. AU - Selvaggi, G. AU - Joyce, P. AU - Gordin, F. AU - Benator, D. AU - Bettano, A. T1 - A Large-scale, Rapid Public Health Response to Rabies in an Organ Recipient and the Previously Undiagnosed Organ Donor. JO - Zoonoses & Public Health JF - Zoonoses & Public Health Y1 - 2014/12// VL - 61 IS - 8 M3 - Article SP - 560 EP - 570 PB - Wiley-Blackwell SN - 18631959 AB - This article describes and contrasts the public health response to two human rabies cases: one organ recipient diagnosed within days of symptom onset and the transplant donor who was diagnosed 18 months post-symptom onset. In response to an organ-transplant-related rabies case diagnosed in 2013, organ donor and recipient investigations were conducted by multiple public health agencies. Persons with potential exposure to infectious patient materials were assessed for rabies virus exposure. An exposure investigation was conducted to determine the source of the organ donor's infection. Over 100 persons from more than 20 agencies spent over 2700 h conducting contact investigations in healthcare, military and community settings. The 564 persons assessed include 417 healthcare workers [5.8% recommended for post-exposure prophylaxis ( PEP)], 96 community contacts (15.6% recommended for PEP), 30 autopsy personnel (50% recommended for PEP), and 21 other persons (4.8% recommended for PEP). Donor contacts represented 188 assessed with 20.2% recommended for PEP, compared with 5.6% of 306 recipient contacts recommended for PEP. Human rabies cases result in substantial use of public health and medical resources, especially when diagnosis is delayed. Although rare, clinicians should consider rabies in cases of encephalitis of unexplained aetiology, particularly for cases that may result in organ donation. [ABSTRACT FROM AUTHOR] AB - Copyright of Zoonoses & Public Health is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PUBLIC health KW - RABIES virus KW - RABIES -- Diagnosis KW - ORGAN donors KW - DONATION of organs, tissues, etc. KW - DISEASES -- Causes & theories of causation N1 - Accession Number: 99452190; Wallace, R. M. 1,2 Stanek, D. 3 Griese, S. 2,4 Krulak, D. 5 Vora, N. M. 1,2 Pacha, L. 6 Kan, V. 7,8 Said, M. 2,9 Williams, C. 4 Burgess, T. H. 10 Clausen, S. S. 10 Austin, C. 11 Gabel, J. 12 Lehman, M. 13 Finelli, L. N. 14 Selvaggi, G. 15 Joyce, P. 7 Gordin, F. 7,8 Benator, D. 7,8 Bettano, A. 13; Affiliation: 1: Poxvirus and Rabies Branch, Division of High-Consequence Pathogens and Pathology (DHCPP), Centers for Disease Control and Prevention 2: Epidemic Intelligence Service, Centers for Disease Control and Prevention 3: Florida Department of Health 4: North Carolina Department of Health 5: Naval Hospital Pensacola 6: U.S. Army Public Health Command 7: Washington DC Veterans Affairs Medical Center 8: George Washington University 9: Maryland Department of Health and Mental Hygiene 10: Walter Reed National Military Medical Center 11: Illinois Department of Health 12: Georgia Department of Health 13: United States Air Force School of Aerospace Medicine 14: Office of the Armed Forces Medical Examiner 15: Broward County Hospital; Source Info: Dec2014, Vol. 61 Issue 8, p560; Subject Term: PUBLIC health; Subject Term: RABIES virus; Subject Term: RABIES -- Diagnosis; Subject Term: ORGAN donors; Subject Term: DONATION of organs, tissues, etc.; Subject Term: DISEASES -- Causes & theories of causation; NAICS/Industry Codes: 525120 Health and Welfare Funds; Number of Pages: 11p; Document Type: Article L3 - 10.1111/zph.12105 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99452190&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2014-49210-003 AN - 2014-49210-003 AU - Dillard, Michael B. AU - Warm, Joel S. AU - Funke, Gregory J. AU - Funke, Matthew E. AU - Finomore, Victor S. Jr. AU - Matthews, Gerald AU - Shaw, Tyler H. AU - Parasuraman, Raja T1 - The sustained attention to response task (SART) does not promote mindlessness during vigilance performance. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2014/12// VL - 56 IS - 8 SP - 1364 EP - 1379 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Funke, Gregory J., Air Force Research Laboratory, 2510 Fifth Street, Wright-Patterson Air Force Base, OH, US, 45433-7951 N1 - Accession Number: 2014-49210-003. PMID: 25509819 Partial author list: First Author & Affiliation: Dillard, Michael B.; National Research Council, Washington, DC, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20150119. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Performance; Responses; Sustained Attention; Vigilance. Minor Descriptor: Eye Fixation; Models. Classification: Human Factors Engineering (4010). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Multiple Resource Questionnaire; Nearest Neighbor Index; Sustained Attention to Response Task DOI: 10.1037/t28308-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 16. Issue Publication Date: Dec, 2014. Publication History: Accepted Date: Apr 15, 2014; First Submitted Date: Jun 14, 2013. Copyright Statement: Human Factors and Ergonomics Society. 2014. AB - Objective: In this study, we evaluated the validity of the Sustained Attention to Response Task (SART) as a means for promoting mindlessness in vigilance performance. Background: Vigilance tasks typically require observers to respond to critical signals and to withhold responding to neutral events. The SART features the opposite response requirements, which supposedly leads it to promote a mindless, nonthoughtful approach to the vigilance task. To test that notion, we compared the SART to the traditional vigilance format (TVF) in terms of diagnostic accuracy assessed through decision theory measures of positive and negative predictive power (PPP and NPP), perceived mental workload indexed by the Multiple Resource Questionnaire, and oculomotor activity reflected in the Nearest Neighbor Index and fixation dwell times. Method: Observers in TVF and SART conditions monitored a video display for collision flight paths in a simulated air traffic control task. Results: Diagnostic accuracy in terms of NPP was high in both format conditions. While PPP was poorer in the SART than in the TVF, that result could be accounted for by a loss of motor control rather than a lack of mindfulness. Identical high levels of workload were generated by the TVF and SART tasks, and observers in both conditions showed similar dynamic scanning of the visual scene. Conclusion: The data indicate that the SART is not an engine of mindlessness. Application: The results challenge the widespread use of the SART to support a model in which mindlessness is considered to be the principal root of detection failures in vigilance. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - vigilance KW - SART KW - mental workload KW - mindlessness model KW - resource model KW - MRQ KW - oculometrics KW - gaze control KW - positive predictive power KW - negative predictive power KW - 2014 KW - Performance KW - Responses KW - Sustained Attention KW - Vigilance KW - Eye Fixation KW - Models KW - 2014 DO - 10.1177/0018720814537521 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-49210-003&site=ehost-live&scope=site UR - Gregory.Funke.1@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-56426-001 AN - 2015-56426-001 AU - Lajiness-O'Neill, Renée AU - Richard, Annette E. AU - Moran, John E. AU - Olszewski, Amy AU - Pawluk, Lesley AU - Jacobson, Daniel AU - Mansour, Alfred AU - Vogt, Kelly AU - Erdodi, Laszlo A. AU - Moore, Aimee M. AU - Bowyer, Susan M. T1 - Neural synchrony examined with magnetoencephalography (MEG) during eye gaze processing in autism spectrum disorders: Preliminary findings. JF - Journal of Neurodevelopmental Disorders JO - Journal of Neurodevelopmental Disorders JA - J Neurodev Disord Y1 - 2014/12// VL - 6 CY - United Kingdom PB - BioMed Central Limited SN - 1866-1947 SN - 1866-1955 AD - Lajiness-O'Neill, Renée N1 - Accession Number: 2015-56426-001. PMID: 24976870 Partial author list: First Author & Affiliation: Lajiness-O'Neill, Renée; Eastern Michigan University, Ypsilanti, MI, US. Other Publishers: Springer. Release Date: 20160111. Correction Date: 20170306. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Lajiness-O'Neill, Renée. Major Descriptor: Autism Spectrum Disorders; Eye Fixation; Magnetoencephalography; Neurology. Minor Descriptor: Social Cognition; Synchrony. Classification: Neuropsychology & Neurology (2520); Developmental Disorders & Autism (3250). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adolescence (13-17 yrs) (200); Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Tests & Measures: Autism Diagnostic Interview-Revised DOI: 10.1037/t18128-000; Wechsler Abbreviated Scale of Intelligence DOI: 10.1037/t15170-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. ArtID: 14. Issue Publication Date: Dec, 2014. Publication History: First Posted Date: Jun 17, 2014; Accepted Date: Jun 4, 2014; First Submitted Date: Aug 28, 2013. Copyright Statement: This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. Lajiness-O¿Neill et al.; licensee BioMed Central Ltd. 2014. AB - Background: Gaze processing deficits are a seminal, early, and enduring behavioral deficit in autism spectrum disorder (ASD); however, a comprehensive characterization of the neural processes mediating abnormal gaze processing in ASD has yet to be conducted. Methods: This study investigated whole-brain patterns of neural synchrony during passive viewing of direct and averted eye gaze in ASD adolescents and young adults (MAge = 16.6) compared to neurotypicals (NT) (MAge = 17.5) while undergoing magnetoencephalography. Coherence between each pair of 54 brain regions within each of three frequency bands (low frequency (0 to 15 Hz), beta (15 to 30 Hz), and low gamma (30 to 45 Hz)) was calculated. Results: Significantly higher coherence and synchronization in posterior brain regions (temporo-parietal-occipital) across all frequencies was evident in ASD, particularly within the low 0 to 15 Hz frequency range. Higher coherence in fronto-temporo-parietal regions was noted in NT. A significantly higher number of low frequency cross-hemispheric synchronous connections and a near absence of right intra-hemispheric coherence in the beta frequency band were noted in ASD. Significantly higher low frequency coherent activity in bilateral temporo-parieto-occipital cortical regions and higher gamma band coherence in right temporo-parieto-occipital brain regions during averted gaze was related to more severe symptomology as reported on the Autism Diagnostic Interview-Revised (ADI-R). Conclusions: The preliminary results suggest a pattern of aberrant connectivity that includes higher low frequency synchronization in posterior cortical regions, lack of long-range right hemispheric beta and gamma coherence, and decreased coherence in fronto-temporo-parietal regions necessary for orienting to shifts in eye gaze in ASD; a critical behavior essential for social communication. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - Autism spectrum disorder KW - Eye gaze KW - Neural synchrony KW - Coherence KW - Magnetoencephalography KW - Social cognition KW - 2014 KW - Autism Spectrum Disorders KW - Eye Fixation KW - Magnetoencephalography KW - Neurology KW - Social Cognition KW - Synchrony KW - 2014 U1 - Sponsor: Eastern Michigan University, US. Other Details: New faculty award (NFA), Faculty Research Fellowship Award (FRF). Recipients: Lajiness-O'Neill, Renée DO - 10.1186/1866-1955-6-15 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-56426-001&site=ehost-live&scope=site UR - rlajines@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR AU - C Q Jiao AU - S F Adams T1 - Electron ionization of cyclohexene. JO - Journal of Physics: B Atomic Molecular & Optical Physics JF - Journal of Physics: B Atomic Molecular & Optical Physics Y1 - 2014/11/28/ VL - 47 IS - 22 M3 - Article SP - 1 EP - 1 SN - 09534075 AB - The absolute total cross section of electron ionization on cyclohexene (CHE) and the branching ratios of the product ions are measured in an electron energy range of 10–200 eV. The total cross section reaches a maximum of 1.5 × 10−15 cm2 at 80 eV. Sixteen noteworthy product ions are observed from the ionization of CHE that have partial cross sections greater than 5 × 10−18 cm2 at 50 eV: C2H3+, C3H3,5+, C4H2–7+, C5H5–7+, and C6H5,7,9,10+, where branching ratios are reported for each. The most abundant ions within the electron energy range studied are the parent ion C6H10+ and fragment ions C5H7+ and C4H6+, with combined abundance accounting more than half of the ion population. The reaction pathways forming certain fragment ions at energies near their thresholds are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: B Atomic Molecular & Optical Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CYCLOHEXENE KW - ELECTRON impact ionization KW - ELECTRON energy states KW - DAUGHTER ions KW - ELECTRONIC excitation KW - IONIZATION (Atomic physics) N1 - Accession Number: 99331690; C Q Jiao 1 S F Adams 2; Email Address: steven.adams.11@us.af.mil; Affiliation: 1: UES, Inc., Dayton, OH 45432-1894, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7251, USA; Source Info: 11/28/2014, Vol. 47 Issue 22, p1; Subject Term: CYCLOHEXENE; Subject Term: ELECTRON impact ionization; Subject Term: ELECTRON energy states; Subject Term: DAUGHTER ions; Subject Term: ELECTRONIC excitation; Subject Term: IONIZATION (Atomic physics); Number of Pages: 1p; Document Type: Article L3 - 10.1088/0953-4075/47/22/225203 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99331690&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nathan D Zameroski AU - Gordon D Hager AU - Christopher J Erickson AU - John H Burke T1 - Pressure broadening and frequency shift of the 5S1/2 → 5D5/2 and 5S1/2 → 7S1/2 two photon transitions in 85Rb by the noble gases and N2. JO - Journal of Physics: B Atomic Molecular & Optical Physics JF - Journal of Physics: B Atomic Molecular & Optical Physics Y1 - 2014/11/28/ VL - 47 IS - 22 M3 - Article SP - 1 EP - 1 SN - 09534075 AB - Doppler free two photon absorption spectroscopy was employed to measure the pressure broadening and frequency shift rates of the 5S1/2 (F = 3) → 5D5/2 (F = 5, 4, 3, 2, 1) (778.105 nm) and the 5S1/2 (F = 2) → 7S1/2 (F = 2) (760.126 nm) two photon transitions in 85Rb by the noble gases and N2. To our knowledge, these rates are reported on for the first time. The self-broadening and shift rate of the 5S1/2 (F = 3) → 5D5/2 (F = 5, 4, 3, 2, 1) transition and self -broadening rate of the 5S1/2 (F = 2) → 7S1/2 (F = 2) transition were also measured. The temperature dependence of the self-frequency shift (Rb-Rb collisions) of these transitions is presented. Helium diffusion rates through Quartz and Pyrex cells are also calculated and the implication of helium diffusion through glass vapor cells is discussed in regards to atomic frequency standards based on these transitions. Experimental pressure broadening and shift rates are compared to theoretically calculated rates assuming a 6, 8 or 6, 8, 10 difference potential and pseudo potential model. Reasonable agreement is achieved between experimental and theoretical values. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: B Atomic Molecular & Optical Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHT absorption KW - BUYS-Ballot's laws KW - ISOBARIC processes KW - NOBLE gases KW - ATOMIC frequency standards N1 - Accession Number: 99331709; Nathan D Zameroski 1; Email Address: ndz103@hotmail.com Gordon D Hager 2 Christopher J Erickson 3 John H Burke 3; Affiliation: 1: Space Dynamics Laboratory, Logan, UT 84341, USA 2: Department of Engineering Physics, Air Force Institute of Technology, Wright Patterson Air Force Base, OH 45433, USA 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, NM 87117, USA; Source Info: 11/28/2014, Vol. 47 Issue 22, p1; Subject Term: LIGHT absorption; Subject Term: BUYS-Ballot's laws; Subject Term: ISOBARIC processes; Subject Term: NOBLE gases; Subject Term: ATOMIC frequency standards; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0953-4075/47/22/225205 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99331709&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gomez, Eliot F. AU - Venkatraman, Vishak AU - Grote, James G. AU - Steckl, Andrew J. T1 - DNA Bases Thymine and Adenine in Bio-Organic Light Emitting Diodes. JO - Scientific Reports JF - Scientific Reports Y1 - 2014/11/28/ M3 - Article SP - 1 EP - 5 SN - 20452322 AB - We report on the use of nucleic acid bases (NBs) in organic light emitting diodes (OLEDs). NBs are small molecules that are the basic building blocks of the larger DNA polymer. NBs readily thermally evaporate and integrate well into the vacuum deposited OLED fabrication. Adenine (A) and thymine (T) were deposited as electron-blocking/hole-transport layers (EBL/HTL) that resulted in increases in performance over the reference OLED containing the standard EBL material NPB. A-based OLEDs reached a peak current efficiency and luminance performance of 48 cd/A and 93,000 cd/m2, respectively, while T-based OLEDs had a maximum of 76 cd/A and 132,000 cd/m2. By comparison, the reference OLED yielded 37 cd/A and 113,000 cd/m2. The enhanced performance of T-based devices is attributed to a combination of energy levels and structured surface morphology that causes more efficient and controlled hole current transport to the emitting layer. [ABSTRACT FROM AUTHOR] AB - Copyright of Scientific Reports is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THYMINE KW - DNA KW - ADENINE KW - NUCLEIC acids KW - ORGANIC light emitting diodes N1 - Accession Number: 100048095; Gomez, Eliot F. 1 Venkatraman, Vishak 1 Grote, James G. 2 Steckl, Andrew J. 1; Email Address: a.steckl@uc.edu; Affiliation: 1: Nanoelectronics Laboratory, University of Cincinnati, Cincinnati, OH 45221-0030 USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7707 USA; Source Info: 11/28/2014, p1; Subject Term: THYMINE; Subject Term: DNA; Subject Term: ADENINE; Subject Term: NUCLEIC acids; Subject Term: ORGANIC light emitting diodes; Number of Pages: 5p; Document Type: Article L3 - 10.1038/srep07105 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100048095&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Snure, Michael AU - Paduano, Qing AU - Hamilton, Merle AU - Shoaf, Jodie AU - Mann, J. Matthew T1 - Optical characterization of nanocrystalline boron nitride thin films grown by atomic layer deposition. JO - Thin Solid Films JF - Thin Solid Films Y1 - 2014/11/28/Nov2014 Part 1 VL - 571 M3 - Article SP - 51 EP - 55 SN - 00406090 AB - Boron nitride thin films were grown on sapphire and Si substrates by atomic layer deposition from triethylborane (TEB) and NH 3 precursors in the temperature range of 500 to 900 °C. By varying the TEB exposure the film thickness can be controlled with< 1 nm precision. At 600 °C the process is self-limiting, but films are found to be amorphous. Films grown at higher temperatures were identified as sp 2 BN, but the process is no longer self-limiting. From Raman and IR absorption spectroscopy films deposited at 900 °C were identified as nanocrystalline sp 2 BN with crystallite sizes in the range of 3 to 8 nm depending on the NH 3 dosage. Films deposited at lower temperatures had broad red shifted IR absorption peaks indicating the lack of long range ordering. The visible and UV optical properties of these films were characterized by UV–Vis transmission measurements over the range of 800 to 190 nm. Nanocrystalline films are highly transparent over this range up to the band gap, which was measured to be in the range of 5.83 to 5.65 eV depending on the NH 3 dosage. [ABSTRACT FROM AUTHOR] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BORON nitride KW - NANOCRYSTALS KW - THIN films -- Analysis KW - ATOMIC layer deposition KW - TEMPERATURE effect KW - CHEMICAL precursors KW - Atomic layer deposition KW - Boron nitride KW - Fourier-transform infrared spectroscopy KW - Raman spectroscopy KW - Thin films N1 - Accession Number: 108341181; Snure, Michael 1; Email Address: michael.snure.1@us.af.mil Paduano, Qing 1 Hamilton, Merle 1 Shoaf, Jodie 2 Mann, J. Matthew 1; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH, USA 2: Wyle Laboratories, Inc., Wright-Patterson AFB, OH, USA; Source Info: Nov2014 Part 1, Vol. 571, p51; Subject Term: BORON nitride; Subject Term: NANOCRYSTALS; Subject Term: THIN films -- Analysis; Subject Term: ATOMIC layer deposition; Subject Term: TEMPERATURE effect; Subject Term: CHEMICAL precursors; Author-Supplied Keyword: Atomic layer deposition; Author-Supplied Keyword: Boron nitride; Author-Supplied Keyword: Fourier-transform infrared spectroscopy; Author-Supplied Keyword: Raman spectroscopy; Author-Supplied Keyword: Thin films; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.tsf.2014.09.065 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108341181&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chambreau, Steven D. AU - Schenk, Adam C. AU - Sheppard, Anna J. AU - Yandek, Gregory R. AU - Vaghjiani, Ghanshyam L. AU - Maciejewski, John AU - Koh, Christine J. AU - Golan, Amir AU - Leone, Stephen R. T1 - ThermalDecomposition Mechanisms of AlkylimidazoliumIonic Liquids with Cyano-Functionalized Anions. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2014/11/26/ VL - 118 IS - 47 M3 - Article SP - 11119 EP - 11132 SN - 10895639 AB - Because of the unusually high heatsof vaporization of room-temperatureionic liquids (RTILs), volatilization of RTILs through thermal decompositionand vaporization of the decomposition products can be significant.Upon heating of cyano-functionalized anionic RTILs in vacuum, theirgaseous products were detected experimentally via tunable vacuum ultravioletphotoionization mass spectrometry performed at the Chemical DynamicsBeamline 9.0.2 at the Advanced Light Source. Experimental evidencefor di- and trialkylimidazolium cations and cyano-functionalized anionicRTILs confirms thermal decomposition occurs primarily through twopathways: deprotonation of the cation by the anion and dealkylationof the imidazolium cation by the anion. Secondary reactions includepossible cyclization of the cation and C2 substitution on the imidazolium,and their proposed reaction mechanisms are introduced here. Additionalevidence supporting these mechanisms was obtained using thermal gravimetricanalysis–mass spectrometry, gas chromatography–massspectrometry, and temperature-jump infrared spectroscopy. In orderto predict the overall thermal stability in these ionic liquids, theability to accurately calculate both the basicity of the anions andtheir nucleophilicity in the ionic liquid is critical. Both gas phaseand condensed phase (generic ionic liquid (GIL) model) density functionaltheory calculations support the decomposition mechanisms, and theGIL model could provide a highly accurate means to determine thermalstabilities for ionic liquids in general. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL analysis KW - DECOMPOSITION (Chemistry) KW - IMIDAZOLINES KW - ALKYL compounds KW - ANIONS -- Analysis KW - VAPORIZATION KW - CHEMISTRY experiments N1 - Accession Number: 108582345; Chambreau, Steven D. 1 Schenk, Adam C. 1 Sheppard, Anna J. 1 Yandek, Gregory R. 1 Vaghjiani, Ghanshyam L. 1 Maciejewski, John 1 Koh, Christine J. 1 Golan, Amir 1 Leone, Stephen R. 1; Affiliation: 1: †ERC,Inc., and ‡Propellants Branch, Aerospace Systems Directorate, Air Force Research Laboratory, AFRL/RQRP, Edwards Air Force Base, California 93524, United States; Source Info: Nov2014, Vol. 118 Issue 47, p11119; Subject Term: THERMAL analysis; Subject Term: DECOMPOSITION (Chemistry); Subject Term: IMIDAZOLINES; Subject Term: ALKYL compounds; Subject Term: ANIONS -- Analysis; Subject Term: VAPORIZATION; Subject Term: CHEMISTRY experiments; Number of Pages: 14p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108582345&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guenthner, Andrew J. AU - Wright, Michael E. AU - Chafin, Andrew P. AU - Reams, Josiah T. AU - Lamison, Kevin R. AU - Ford, Michael D. AU - Kirby, Shawn P. J. AU - Zavala, Jacob J. AU - Mabry, Joseph M. T1 - Mechanisms of Decreased Moisture Uptake in Ortho-Methylated Di(cyanate ester) Networks. JO - Macromolecules JF - Macromolecules Y1 - 2014/11/25/ VL - 47 IS - 22 M3 - Article SP - 7691 EP - 7700 SN - 00249297 AB - Decreases of up to 50% in the moistureuptake of polycyanuratenetworks based on 2,2-bis(4-cyanatophenyl)propane (BADCy) and 1,1-bis(4-cyanatophenyl)ethane(LECy) were observed when analogous networks containing a single methylgroup ortho- to each aryl–cyanurate linkagewere prepared by reduction and acid-catalyzed coupling of salicylicacid followed by treatment with cyanogen bromide and subsequent cyclotrimerization.The differences in water uptake were observed despite similar decreasesin packing fraction as conversion proceeded in all networks studied.Conversely, the presence or absence of methyl groups at arylene bridges,remote from the cyanurate oxygen, had no influence on water uptake.Vitrification during cure had little effect on either free volumedevelopment or moisture uptake. These results confirm that sterichindrance from ortho-methyl groups inhibits absorptionof water presumably by decreasing the thermodynamic favorability ofsterically permitted interaction with the cyanurate oxygen. A furtherexamination of the effect of two different catalysts, 2 parts perhundred of a 30:1 by weight mixture of nonylphenol and copper(II)acetylacetonate and 500 ppm of dibutyltin dilaurate (DBTDL), comparedto analogous uncatalyzed networks, showed that hydrolytic stabilitywas dramatically affected by catalyst choice, while thermochemicalstability was also impacted. These results provide important insightsinto the mechanisms that determine structure–property relationshipsin polycyanurate networks. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ESTERS -- Analysis KW - POLYMER networks KW - METHYLATION KW - MOISTURE -- Measurement KW - CHEMICAL reduction KW - ACID catalysts N1 - Accession Number: 99725667; Guenthner, Andrew J. 1 Wright, Michael E. 1 Chafin, Andrew P. 1 Reams, Josiah T. 1 Lamison, Kevin R. 1 Ford, Michael D. 1 Kirby, Shawn P. J. 1 Zavala, Jacob J. 1 Mabry, Joseph M. 1; Affiliation: 1: †Aerospace SystemsDirectorate and ‡ERC Incorporated, Air Force Research Laboratory, Edwards AFB, California 93524, United States; Source Info: Nov2014, Vol. 47 Issue 22, p7691; Subject Term: ESTERS -- Analysis; Subject Term: POLYMER networks; Subject Term: METHYLATION; Subject Term: MOISTURE -- Measurement; Subject Term: CHEMICAL reduction; Subject Term: ACID catalysts; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99725667&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alam, Tarek AU - Baoming Wang AU - Pulavarthy, Raghu AU - Haque, M. A. AU - Muratore, Christopher AU - Glavin, Nicholas AU - Roy, Ajit K. AU - Voevodin, Andrey A. T1 - Domain engineering of physical vapor deposited two-dimensional materials. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/11/24/ VL - 105 IS - 21 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00036951 AB - Physical vapor deposited two-dimensional (2D) materials span larger areas compared to exfoliated flakes, but suffer from very small grain or domain sizes. In this letter, we fabricate freestanding molybdenum disulfide (MoS2) and amorphous boron nitride (BN) specimens to expose both surfaces. We performed in situ heating in a transmission electron microscope to observe the domain restructuring in real time. The freestanding MoS2 specimens showed up to 100× increase in domain size, while the amorphous BN transformed in to polycrystalline hexagonal BN (h-BN) at temperatures around 600 °C much lower than the 850-1000 °C range cited in the literature. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLYBDENUM disulfide KW - RESEARCH KW - BORON nitride KW - PHYSICAL vapor deposition KW - TWO-dimensional models KW - TRANSMISSION electron microscopy N1 - Accession Number: 99728669; Alam, Tarek 1 Baoming Wang 1 Pulavarthy, Raghu 1 Haque, M. A. 1; Email Address: mah37@psu.edu Muratore, Christopher 2 Glavin, Nicholas 3 Roy, Ajit K. 3 Voevodin, Andrey A. 3; Affiliation: 1: Department of Mechanical and Nuclear Engineering, Pennsylvania State University, 314, Leonhard Building, University Park, Pennsylvania 16802, USA 2: Kettering Laboratories, Department of Chemical and Materials Engineering, University of Dayton, Room 508A, Ohio 45469, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, 3005 Hobson Way, Building 651/253, Ohio 45433, USA; Source Info: 2014, Vol. 105 Issue 21, p1; Subject Term: MOLYBDENUM disulfide; Subject Term: RESEARCH; Subject Term: BORON nitride; Subject Term: PHYSICAL vapor deposition; Subject Term: TWO-dimensional models; Subject Term: TRANSMISSION electron microscopy; Number of Pages: 5p; Illustrations: 1 Color Photograph, 2 Graphs; Document Type: Article L3 - 10.1063/1.4902937 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99728669&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sujin Yoon AU - Jeongwoo Hwang AU - Jong Su Kim AU - Jun Oh Kim AU - Sang-Woo Kang AU - Woo-Yong Jang AU - Noyola, Michael AU - Urbas, Augustine AU - Zahyun Ku AU - Sang Jun Lee T1 - Incident angular dependence of surface plasmon polariton modes for thermal imaging. JO - Electronics Letters JF - Electronics Letters Y1 - 2014/11/20/ VL - 50 IS - 24 M3 - Article SP - 1862 EP - 1863 PB - Institution of Engineering & Technology SN - 00135194 AB - In the authors' previous work, the effect of a plasmonic metal hole array (MHA) as integrated on the infrared (IR) photodetector was demonstrated and its performance particularly at a normal incidence was analysed. However, in IR imaging, the associated optics or lens focuses and collimates the light to the detector, which in turn causes the incident light to bend with various angles. Since the MHA is integrated on top of the detector, it is critical to investigate its sensitivity against the angle of incidence and how it impacts the overall sensing capability. The splitting of the surface plasmon polariton (SPP) resonances due to MHA is reported here, since the incident angle varies. In the experiment, the SPP structure has been fabricated by a two-dimensional (2D) square array of subwavelength circular holes penetrating the gold film. The transmission spectra of the SPP structure in a mid-IR range have been measured for various incident angles. An interesting phenomenon is observed here, that is, the first- and second-order bimodal plasmonic spectra split into three or more peaks as the incident angle increases. Consistency in the experimental results with the simulation is found. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEPENDENCE (Statistics) KW - SURFACE plasmon resonance KW - POLARITONS KW - THERMOGRAPHY KW - PHOTODETECTORS N1 - Accession Number: 99701300; Sujin Yoon 1 Jeongwoo Hwang 2 Jong Su Kim 1,3 Jun Oh Kim 1 Sang-Woo Kang 1 Woo-Yong Jang 4 Noyola, Michael 4 Urbas, Augustine 4 Zahyun Ku 4 Sang Jun Lee 1; Email Address: sjlee@kriss.re.kr; Affiliation: 1: Division of Industrial Metrology, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea 2: Department of Applied Physics, Kyung Hee University, Yongin 446-701, Republic of Korea 3: Department of Physics, Yeungnam University, Gyeongsan 712-749, Republic of Korea 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: 11/20/2014, Vol. 50 Issue 24, p1862; Subject Term: DEPENDENCE (Statistics); Subject Term: SURFACE plasmon resonance; Subject Term: POLARITONS; Subject Term: THERMOGRAPHY; Subject Term: PHOTODETECTORS; Number of Pages: 2p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1049/el.2014.3153 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99701300&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Brian Tilston AU - Faircloth, Brant C. AU - Glenn, Travis C. AU - Brumfield, Robb T. AU - McCormack, John E. AU - Derryberry, Elizabeth P. AU - Cuervo, Andrés M. AU - Burney, Curtis W. AU - Hickerson, Michael. J. AU - Aleixo, Alexandre AU - Cadena, Carlos Daniel AU - Pérez-Emán, Jorge AU - Xie, Xiaoou AU - Harvey, Michael G. AU - Prejean, Jesse AU - Fields, Samantha T1 - The drivers of tropical speciation. JO - Nature JF - Nature Y1 - 2014/11/20/ VL - 515 IS - 7527 M3 - Article SP - 406 EP - 409 PB - Nature Publishing Group SN - 00280836 AB - Since the recognition that allopatric speciation can be induced by large-scale reconfigurations of the landscape that isolate formerly continuous populations, such as the separation of continents by plate tectonics, the uplift of mountains or the formation of large rivers, landscape change has been viewed as a primary driver of biological diversification. This process is referred to in biogeography as vicariance. In the most species-rich region of the world, the Neotropics, the sundering of populations associated with the Andean uplift is ascribed this principal role in speciation. An alternative model posits that rather than being directly linked to landscape change, allopatric speciation is initiated to a greater extent by dispersal events, with the principal drivers of speciation being organism-specific abilities to persist and disperse in the landscape. Landscape change is not a necessity for speciation in this model. Here we show that spatial and temporal patterns of genetic differentiation in Neotropical birds are highly discordant across lineages and are not reconcilable with a model linking speciation solely to landscape change. Instead, the strongest predictors of speciation are the amount of time a lineage has persisted in the landscape and the ability of birds to move through the landscape matrix. These results, augmented by the observation that most species-level diversity originated after episodes of major Andean uplift in the Neogene period, suggest that dispersal and differentiation on a matrix previously shaped by large-scale landscape events was a major driver of avian speciation in lowland Neotropical rainforests. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECIATION (Biology) KW - LANDSCAPE changes KW - RESEARCH KW - VICARIANCE KW - SPECIES diversity KW - LATIN America N1 - Accession Number: 99573567; Smith, Brian Tilston 1 Faircloth, Brant C. 2 Glenn, Travis C. 3 Brumfield, Robb T. 4 McCormack, John E. 5 Derryberry, Elizabeth P. 5 Cuervo, Andrés M. 5 Burney, Curtis W. 5 Hickerson, Michael. J. 5 Aleixo, Alexandre 5 Cadena, Carlos Daniel 5 Pérez-Emán, Jorge 5 Xie, Xiaoou 5 Harvey, Michael G. 5 Prejean, Jesse 5 Fields, Samantha 5; Affiliation: 1: 1] Museum of Natural Science, Louisiana State University, Baton Rouge, Louisiana 70803, USA [2] Department of Ornithology, American Museum of Natural History, New York, New York 10024, USA [3] 2: 1] Department of Ecology and Evolutionary Biology, University of California, Los Angeles, California 90095, USA [2] Moore Laboratory of Zoology, Occidental College, 1600 Campus Road, Los Angeles, California 90041, USA (J.E.M.); Department of Ecology and Evolutionary Biology, Tulane University, New Orleans, Louisiana 70118, USA (A.M.C. &E.P.D.); Department of Biology, 2355 Faculty Drive, Suite 2P483, United States Air Force Academy, Colorado 80840, USA (C.W.B.); Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana 70803, USA (B.C.F.). 3: Department of Environmental Health Science, University of Georgia, Athens, Georgia 30602, USA 4: 1] Museum of Natural Science, Louisiana State University, Baton Rouge, Louisiana 70803, USA [2] Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana 70803, USA [3] 5: Department of Cell Biology, New York University Medical Center, New York, New York, U.S.A; Source Info: 11/20/2014, Vol. 515 Issue 7527, p406; Subject Term: SPECIATION (Biology); Subject Term: LANDSCAPE changes; Subject Term: RESEARCH; Subject Term: VICARIANCE; Subject Term: SPECIES diversity; Subject Term: LATIN America; Number of Pages: 4p; Illustrations: 1 Color Photograph, 1 Chart, 1 Graph, 1 Map; Document Type: Article L3 - 10.1038/nature13687 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99573567&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yin, Zhiyao AU - Carter, Campbell AU - Lempert, Walter T1 - Effects of signal corrections on measurements of temperature and OH concentrations using laser-induced fluorescence. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2014/11/15/ VL - 117 IS - 2 M3 - Article SP - 707 EP - 721 PB - Springer Science & Business Media B.V. SN - 09462171 AB - Temperature and OH concentrations derived from OH laser-induced fluorescence (LIF) are known to be susceptible to effects such as collisional quenching, laser absorption, and fluorescence trapping. In this paper, a set of analytical and easy-to-implement methods is presented for treating these effects. The significance of these signal corrections on inferred temperature and absolute OH concentration is demonstrated in an atmospheric-pressure, near-stoichiometric CH-air flame stabilized on a Hencken burner, for laser excitation of both the AΣ←XΠ (0,0) and (1,0) bands. It is found that the combined effect of laser attenuation and fluorescence trapping can cause considerable error in the OH number density and temperature if not accounted for, even with A-X(1,0) excitation. The validity of the assumptions used in signal correction (that the excited-state distribution is either thermalized or frozen) is examined using time-dependent modeling of the ro-vibronic states during and after laser excitation. These assumptions are shown to provide good bounding approximations for treating transition-dependent issues in OH LIF, especially for an unknown collisional environment, and it is noted that the proposed methods are generally applicable to LIF-based measurements. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER-induced fluorescence KW - TEMPERATURE measurements KW - HYDROXIDES KW - QUENCHING (Chemistry) KW - EXCITED state chemistry KW - FLAME stability KW - SIGNALS & signaling N1 - Accession Number: 98836782; Yin, Zhiyao 1; Email Address: yin.67@osu.edu Carter, Campbell 2 Lempert, Walter 1; Affiliation: 1: Michael A. Chaszeyka Nonequilibrium Thermodynamics Laboratories, Department of Mechanical Engineering, The Ohio State University, W090 Scott Lab, 201. W 19th Ave Columbus 43210 USA 2: Air Force Research Laboratory, Wright-Patterson AFB, Dayton 45433 USA; Source Info: Nov2014, Vol. 117 Issue 2, p707; Subject Term: LASER-induced fluorescence; Subject Term: TEMPERATURE measurements; Subject Term: HYDROXIDES; Subject Term: QUENCHING (Chemistry); Subject Term: EXCITED state chemistry; Subject Term: FLAME stability; Subject Term: SIGNALS & signaling; Number of Pages: 15p; Document Type: Article L3 - 10.1007/s00340-014-5886-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98836782&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baker, Peter A. AU - Goltz, Mark N. AU - Schrand, Amanda M. AU - Yoon, Do Young AU - Kim, Dong-Shik T1 - Organophosphate vapor detection on gold electrodes using peptide nanotubes. JO - Biosensors & Bioelectronics JF - Biosensors & Bioelectronics Y1 - 2014/11/15/ VL - 61 M3 - Article SP - 119 EP - 123 SN - 09565663 AB - Peptide nanotubes (PNTs) encapsulating horseradish peroxidase and surface coated with acetylcholinesterase (AChE) were attached to gold screen printed electrodes to construct a novel gas phase organophosphate (OP) biosensor. When the sensor with the AChE enzyme is put in contact with acetylthiocholine (ATCh), the ATCh is hydrolyzed to produce thiocholine, which is then oxidized by horseradish peroxidase (HRP). Direct electron transfer between HRP and electrode is achieved through PNTs. The signal produced by the electron transfer is measured with cyclic voltammetry (CV). The presence of an OP compound inhibits this signal by binding with the AChE enzyme. In this study, gas phase malathion was used as a model OP due to the fact that it displays the identical binding mechanism with acetylcholinesterase (AChE) as its more potent counterparts such as sarin and VX, but has low toxicity, making it more practical and safer to handle. The CV signal was proportionally inhibited by malathion vapor concentrations as low as 12 ppbv. Depending on the method used in their preparation, the electrodes maintained their activity for up to 45 days. This research demonstrates the potential of applying nano-modified biosensors for the detection of low levels of OP vapor, an important development in countering weaponized organophosphate nerve agents and detecting commercially-used OP pesticides. [ABSTRACT FROM AUTHOR] AB - Copyright of Biosensors & Bioelectronics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GOLD electrodes KW - NANOTUBES KW - PEPTIDES KW - ACETYLCHOLINESTERASE KW - HORSERADISH peroxidase KW - CYCLIC voltammetry KW - Acetylcholinesterase KW - Cyclic voltammetry KW - Horseradish peroxidase KW - Malathion KW - Organophosphate vapor KW - Peptide nanotubes N1 - Accession Number: 97081157; Baker, Peter A. 1 Goltz, Mark N. 1; Email Address: mark.goltz@afit.edu Schrand, Amanda M. 2 Yoon, Do Young 3 Kim, Dong-Shik 4; Affiliation: 1: Department of Systems Engineering and Management, Air Force Institute of Technology, WPAFB, OH 45433, USA 2: Energetic Materials Branch, Munitions Directorate, Air Force Research Laboratory, Eglin AFB, FL 32542, USA 3: Department of Chemical Engineering, Kwangwoon University, South Korea 4: Department of Chemical and Environmental Engineering, University of Toledo, Toledo, OH 43606, USA; Source Info: Nov2014, Vol. 61, p119; Subject Term: GOLD electrodes; Subject Term: NANOTUBES; Subject Term: PEPTIDES; Subject Term: ACETYLCHOLINESTERASE; Subject Term: HORSERADISH peroxidase; Subject Term: CYCLIC voltammetry; Author-Supplied Keyword: Acetylcholinesterase; Author-Supplied Keyword: Cyclic voltammetry; Author-Supplied Keyword: Horseradish peroxidase; Author-Supplied Keyword: Malathion; Author-Supplied Keyword: Organophosphate vapor; Author-Supplied Keyword: Peptide nanotubes; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.bios.2014.04.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97081157&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Esguerra, David F. AU - Hoffman, Wesley P. AU - Thies, Mark C. T1 - Liquid crystallinity in trimer oligomers isolated from petroleum and pyrene pitches. JO - Carbon JF - Carbon Y1 - 2014/11/15/ VL - 79 M3 - Article SP - 265 EP - 273 SN - 00086223 AB - The first unsubstituted, monodisperse polycyclic aromatic hydrocarbon (PAH) to form a liquid crystalline phase (100% mesophase) has been isolated. With a molecular weight of 598 Da and consisting of only 14 aromatic rings, this pyrene trimer is also the lowest molecular weight (mol wt) PAH species for which the existence of liquid crystallinity has been reported. Multiple isomers of the pyrene trimer exist, providing the melting-point depression (mpt = 290 °C) necessary for the existence of a liquid phase and the possibility of mesophase formation. The trimer cut of M-50 pitch (mol wt = 645–890 Da; mpt = 330 °C) has also been isolated and was found to consist of ∼40% mesophase. This trimer is the lowest average mol wt carbonaceous pitch for which significant mesophase formation has been reported. Both trimers were isolated from their starting pitches via packed-column supercritical extraction, using toluene and N-methylpyrrolidone (NMP) mixtures as the extractive solvent. Mass spectrometry and UV–vis and fluorescence spectroscopy were used for molecular characterization. The results of this study indicate that for PAHs, the molecular weight for which liquid crystallinity occurs can be significantly reduced by creating PAH oligomers with lower polydispersity and increased monomer-unit homogeneity. [ABSTRACT FROM AUTHOR] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - PYRENE (Chemical) KW - POLYCYCLIC aromatic hydrocarbons KW - OLIGOMERS KW - PETROLEUM -- Analysis KW - MESOPHASES N1 - Accession Number: 98145187; Esguerra, David F. 1 Hoffman, Wesley P. 2 Thies, Mark C. 1; Email Address: mcths@clemson.edu; Affiliation: 1: Department of Chemical and Biomolecular Engineering, Center for Advanced Engineering Fibers and Films, Clemson University, Clemson, SC 29634-0909, USA 2: Air Force Research Laboratory, AFRL/RQRC, 10 E. Saturn Blvd. Edwards, CA 93524-7680, USA; Source Info: Nov2014, Vol. 79, p265; Subject Term: LIQUID crystals; Subject Term: PYRENE (Chemical); Subject Term: POLYCYCLIC aromatic hydrocarbons; Subject Term: OLIGOMERS; Subject Term: PETROLEUM -- Analysis; Subject Term: MESOPHASES; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.carbon.2014.07.067 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98145187&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pakhomov, Andrei AU - Semenov, Iurii AU - Xiao, Shu AU - Pakhomova, Olga AU - Gregory, Betsy AU - Schoenbach, Karl AU - Ullery, Jody AU - Beier, Hope AU - Rajulapati, Sambasiva AU - Ibey, Bennett T1 - Cancellation of cellular responses to nanoelectroporation by reversing the stimulus polarity. JO - Cellular & Molecular Life Sciences JF - Cellular & Molecular Life Sciences Y1 - 2014/11/15/ VL - 71 IS - 22 M3 - Article SP - 4431 EP - 4441 SN - 1420682X AB - Nanoelectroporation of biomembranes is an effect of high-voltage, nanosecond-duration electric pulses (nsEP). It occurs both in the plasma membrane and inside the cell, and nanoporated membranes are distinguished by ion-selective and potential-sensitive permeability. Here we report a novel phenomenon of bioeffects cancellation that puts nsEP cardinally apart from the conventional electroporation and electrostimulation by milli- and microsecond pulses. We compared the effects of 60- and 300-ns monopolar, nearly rectangular nsEP on intracellular Ca mobilization and cell survival with those of bipolar 60 + 60 and 300 + 300 ns pulses. For diverse endpoints, exposure conditions, pulse numbers (1-60), and amplitudes (15-60 kV/cm), the addition of the second phase cancelled the effects of the first phase. The overall effect of bipolar pulses was profoundly reduced, despite delivering twofold more energy. Cancellation also took place when two phases were separated into two independent nsEP of opposite polarities; it gradually tapered out as the interval between two nsEP increased, but was still present even at a 10-µs interval. The phenomenon of cancellation is unique for nsEP and has not been predicted by the equivalent circuit, transport lattice, and molecular dynamics models of electroporation. The existing paradigms of membrane permeabilization by nsEP will need to be modified. Here we discuss the possible involvement of the assisted membrane discharge, two-step oxidation of membrane phospholipids, and reverse transmembrane ion transport mechanisms. Cancellation impacts nsEP applications in cancer therapy, electrostimulation, and biotechnology, and provides new insights into effects of more complex waveforms, including pulsed electromagnetic emissions. [ABSTRACT FROM AUTHOR] AB - Copyright of Cellular & Molecular Life Sciences is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROPORATION KW - STIMULUS & response (Biology) KW - POLARITY (Biology) KW - BIOLOGICAL membranes KW - HIGH voltages KW - CELL membranes KW - Ablation KW - Bipolar pulses KW - Cell membrane KW - Electropermeabilization KW - Electroporation KW - Nanosecond pulsed electric field N1 - Accession Number: 99019249; Pakhomov, Andrei 1; Email Address: 2andrei@pakhomov.net Semenov, Iurii 1 Xiao, Shu Pakhomova, Olga 1 Gregory, Betsy 1 Schoenbach, Karl Ullery, Jody 2 Beier, Hope 3 Rajulapati, Sambasiva 4 Ibey, Bennett 3; Affiliation: 1: Frank Reidy Research Center for Bioelectrics, Old Dominion University, 4211 Monarch Way, Suite 300 Norfolk 23508 USA 2: General Dynamics Information Technology, Fort Sam Houston San Antonio 78234 USA 3: Bioeffects Division, 711th Human Performance Wing, Air Force Research Laboratory, Fort Sam Houston San Antonio 78234 USA 4: Department of Electrical and Computer Engineering, Old Dominion University, Norfolk 23508 USA; Source Info: Nov2014, Vol. 71 Issue 22, p4431; Subject Term: ELECTROPORATION; Subject Term: STIMULUS & response (Biology); Subject Term: POLARITY (Biology); Subject Term: BIOLOGICAL membranes; Subject Term: HIGH voltages; Subject Term: CELL membranes; Author-Supplied Keyword: Ablation; Author-Supplied Keyword: Bipolar pulses; Author-Supplied Keyword: Cell membrane; Author-Supplied Keyword: Electropermeabilization; Author-Supplied Keyword: Electroporation; Author-Supplied Keyword: Nanosecond pulsed electric field; Number of Pages: 11p; Document Type: Article L3 - 10.1007/s00018-014-1626-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99019249&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parker, Jason T. AU - Schniter, Philip AU - Cevher, Volkan T1 - Bilinear Generalized Approximate Message Passing—Part I: Derivation. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing Y1 - 2014/11/15/ VL - 62 IS - 22 M3 - Article SP - 5839 EP - 5853 SN - 1053587X AB - In this paper, we extend the generalized approximate message passing (G-AMP) approach, originally proposed for high-dimensional generalized-linear regression in the context of compressive sensing, to the generalized-bilinear case, which enables its application to matrix completion, robust PCA, dictionary learning, and related matrix-factorization problems. Here, in Part I of a two-part paper, we derive our Bilinear G-AMP (BiG-AMP) algorithm as an approximation of the sum-product belief propagation algorithm in the high-dimensional limit, where central-limit theorem arguments and Taylor-series approximations apply, and under the assumption of statistically independent matrix entries with known priors. In addition, we propose an adaptive damping mechanism that aids convergence under finite problem sizes, an expectation-maximization (EM)-based method to automatically tune the parameters of the assumed priors, and two rank-selection strategies. In Part II of the paper, we will discuss the specializations of EM-BiG-AMP to the problems of matrix completion, robust PCA, and dictionary learning, and we will present the results of an extensive empirical study comparing EM-BiG-AMP to state-of-the-art algorithms on each problem. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MESSAGE passing (Computer science) KW - REGRESSION analysis KW - TAYLOR'S series KW - EXPECTATION-maximization algorithms KW - APPROXIMATION theory KW - Approximate message passing KW - belief propagation KW - bilinear estimation KW - Context KW - Dictionaries KW - dictionary learning KW - Manganese KW - matrix completion KW - matrix factorization KW - Principal component analysis KW - Random variables KW - robust principal components analysis KW - Robustness KW - Signal processing algorithms N1 - Accession Number: 99082877; Parker, Jason T. 1 Schniter, Philip 2 Cevher, Volkan 3; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Dayton, 2: The Ohio State University, Columbus, 3: École Polytechnique Fédérale de Lausanne,; Source Info: Nov2014, Vol. 62 Issue 22, p5839; Subject Term: MESSAGE passing (Computer science); Subject Term: REGRESSION analysis; Subject Term: TAYLOR'S series; Subject Term: EXPECTATION-maximization algorithms; Subject Term: APPROXIMATION theory; Author-Supplied Keyword: Approximate message passing; Author-Supplied Keyword: belief propagation; Author-Supplied Keyword: bilinear estimation; Author-Supplied Keyword: Context; Author-Supplied Keyword: Dictionaries; Author-Supplied Keyword: dictionary learning; Author-Supplied Keyword: Manganese; Author-Supplied Keyword: matrix completion; Author-Supplied Keyword: matrix factorization; Author-Supplied Keyword: Principal component analysis; Author-Supplied Keyword: Random variables; Author-Supplied Keyword: robust principal components analysis; Author-Supplied Keyword: Robustness; Author-Supplied Keyword: Signal processing algorithms; Number of Pages: 15p; Document Type: Article L3 - 10.1109/TSP.2014.2357776 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99082877&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parker, Jason T. AU - Schniter, Philip AU - Cevher, Volkan T1 - Bilinear Generalized Approximate Message Passing—Part II: Applications. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing J1 - IEEE Transactions on Signal Processing PY - 2014/11/15/ Y1 - 2014/11/15/ VL - 62 IS - 22 M3 - Article SP - 5854 EP - 5867 SN - 1053587X AB - In this paper, we extend the generalized approximate message passing (G-AMP) approach, originally proposed for high-dimensional generalized-linear regression in the context of compressive sensing, to the generalized-bilinear case. In Part I of this two-part paper, we derived our Bilinear G-AMP (BiG-AMP) algorithm as an approximation of the sum-product belief propagation algorithm in the high-dimensional limit, and proposed an adaptive damping mechanism that aids convergence under finite problem sizes, an expectation-maximization (EM)-based method to automatically tune the parameters of the assumed priors, and two rank-selection strategies. Here, in Part II, we discuss the specializations of BiG-AMP to the problems of matrix completion, robust PCA, and dictionary learning, and present the results of an extensive empirical study comparing BiG-AMP to state-of-the-art algorithms on each problem. Our numerical results, using both synthetic and real-world datasets, demonstrate that EM-BiG-AMP yields excellent reconstruction accuracy (often best in class) while maintaining competitive runtimes. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MESSAGE passing (Computer science) -- Research KW - REGRESSION analysis KW - PRINCIPAL component analysis -- Research KW - EXPECTATION-maximization algorithms KW - NUMERICAL analysis N1 - Accession Number: 99082876; Source Information: Nov2014, Vol. 62 Issue 22, p5854; Subject Term: MESSAGE passing (Computer science) -- Research; Subject Term: REGRESSION analysis; Subject Term: PRINCIPAL component analysis -- Research; Subject Term: EXPECTATION-maximization algorithms; Subject Term: NUMERICAL analysis; Subject Term: ; Number of Pages: 14p; ; Document Type: Article; L3 - 10.1109/TSP.2014.2357773 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=99082876&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Pandey, R. B. AU - Farmer, B. L. T1 - Aggregation and network formation in self-assembly of protein (H3.1) by a coarse-grained Monte Carlo simulation. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2014/11/07/ VL - 141 IS - 17 M3 - Article SP - 1 EP - 9 PB - American Institute of Physics SN - 00219606 AB - Multi-scale aggregation to network formation of interacting proteins (H3.1) are examined by a knowledge-based coarse-grained Monte Carlo simulation as a function of temperature and the num-ber of protein chains, i.e., the concentration of the protein. Self-assembly of corresponding homo- polymers of constitutive residues (Cys, Thr, and Glu) with extreme residue-residue interactions, i.e., attractive (Cys-Cys), neutral (Thr-Thr), and repulsive (Glu-Glu), are also studied for comparison with the native protein. Visual inspections show contrast and similarity in morphological evolutions of protein assembly, aggregation of small aggregates to a ramified network from low to high tem-perature with the aggregation of a Cys-polymer, and an entangled network of Glu and Thr polymers. Variations in mobility profiles of residues with the concentration of the protein suggest that the seg- mental characteristic of proteins is altered considerably by the self-assembly from that in its isolated state. The global motion of proteins and Cys polymer chains is enhanced by their interacting network at the low temperature where isolated chains remain quasi-static. Transition from globular to random coil transition, evidenced by the sharp variation in the radius of gyration, of an isolated protein is smeared due to self-assembly of interacting networks of many proteins. Scaling of the structure fac-tor S(q) with the wave vector q provides estimates of effective dimension D of the mass distribution at multiple length scales in self-assembly. Crossover from solid aggregates (D ∼ 3) at low temperature to a ramified fibrous network (D ∼ 2) at high temperature is observed for the protein H3.1 and Cys polymers in contrast to little changes in mass distribution (D ∼ 1.6) of fibrous Glu- and Thr-chain configurations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTEINS KW - CLUSTERING of particles KW - MOLECULAR self-assembly KW - OSTWALD ripening KW - MONTE Carlo method KW - TEMPERATURE effect KW - POLYMERS N1 - Accession Number: 99389861; Pandey, R. B. 1 Farmer, B. L. 2,3; Affiliation: 1: Department of Physics and Astronomy, University of Southern Mississippi, Hattiesburg, Mississippi 39406, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, USA 3: Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27606, USA; Source Info: 11/7/2014, Vol. 141 Issue 17, p1; Subject Term: PROTEINS; Subject Term: CLUSTERING of particles; Subject Term: MOLECULAR self-assembly; Subject Term: OSTWALD ripening; Subject Term: MONTE Carlo method; Subject Term: TEMPERATURE effect; Subject Term: POLYMERS; Number of Pages: 9p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1063/1.4901129 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99389861&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chu, R. L. AU - Chiang, T. H. AU - Hsueh, W. J. AU - Chen, K. H. AU - Lin, K. Y. AU - Brown, G. J. AU - Chyi, J. I. AU - Kwo, J. AU - Hong, M. T1 - Passivation of GaSb using molecular beam epitaxy Y2O3 to achieve low interfacial trap density and high-performance self-aligned inversion-channel p-metal-oxide-semiconductor field-effect-transistors. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/11/05/ VL - 105 IS - 18 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00036951 AB - Molecular beam epitaxy deposited rare-earth oxide of Y2O3 has effectively passivated GaSb, leading to low interfacial trap densities of (1-4) x 1012 cm-2 eV-1 across the energy bandgap of GaSb. A high saturation drain current density of 130µA/µm, a peak transconductance of 90 µS/µm, a low subthreshold slope of 147 mV/decade, and a peak field-effect hole mobility of 200 cm² /V-s were obtained in 1 µm-gate-length self-aligned inversion-channel GaSb p-Metal-Oxide-Semiconductor Field-Effect-Transistors (MOSFETs). In this work, high-κ/GaSb interfacial properties were better in samples with a high substrate temperature of 200 °C than in those with high κ'S deposited at room temperature, in terms of the interfacial electrical properties, particularly, the reduction of interfacial trap densities near the conduction band and the MOSFET device performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PASSIVATION KW - RESEARCH KW - MOLECULAR beam epitaxy KW - GALLIUM antimonide KW - METAL oxide semiconductor field-effect transistors KW - CONDUCTION band N1 - Accession Number: 99329917; Chu, R. L. 1 Chiang, T. H. 1 Hsueh, W. J. 2 Chen, K. H. 3 Lin, K. Y. 3 Brown, G. J. 4 Chyi, J. I. 2 Kwo, J. 5; Email Address: raynien@phys.nthu.edu.tw Hong, M. 3; Email Address: mhong@phys.ntu.edu.tw; Affiliation: 1: Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan 2: Department of Electrical Engineering, National Central University, Jhongli 32001, Taiwan 3: Graduate Institute of Applied Physics and Department of Physics, National Taiwan University, Taipei 10617, Taiwan 4: Air Force Research Laboratory (AFRL), Dayton, Ohio 45433, USA 5: Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan; Source Info: 2014, Vol. 105 Issue 18, p1; Subject Term: PASSIVATION; Subject Term: RESEARCH; Subject Term: MOLECULAR beam epitaxy; Subject Term: GALLIUM antimonide; Subject Term: METAL oxide semiconductor field-effect transistors; Subject Term: CONDUCTION band; Number of Pages: 5p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.4901100 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99329917&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Akdim, Brahim AU - Pachter, Ruth AU - Vaia, Richard A. T1 - Tunability in electron transport of molybdenum chalcogenide nanowires by theoretical prediction. JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2014/11/05/ VL - 615 M3 - Article SP - 99 EP - 104 SN - 00092614 AB - Transition metal chalcogenide nanowires could comprise an alternative for nanoelectronics application, yet this class of materials is not well-characterized. Here we predict tunability in I – V characteristics of MoX (X = S, Se) nanowires, dependent on chalcogen atom, Li doping, type of electrode, and morphology. We show an intrinsic negative differential resistance (NDR)-like behavior for Mo 6 S 6 nanowires, explained by bands mismatch in the electronic structure calculated by density functional theory (DFT) within the non-equilibrium Green's function formalism. The NDR-like behavior is suppressed upon Li intercalation or for gold leads. The electron transport results are based on optimized configurations using a non-empirical London dispersion-corrected DFT functional. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON transport KW - MOLYBDENUM compounds KW - CHALCOGENIDES KW - NANOWIRES KW - DENSITY functional theory KW - DOPING agents (Chemistry) N1 - Accession Number: 99209663; Akdim, Brahim 1,2; Email Address: brahim.akdim.ctr@us.af.mil Pachter, Ruth 1; Email Address: ruth.pachter@us.af.mil Vaia, Richard A. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, United States 2: General Dynamics Information Technology, Inc., Dayton, OH 45433, United States; Source Info: Nov2014, Vol. 615, p99; Subject Term: ELECTRON transport; Subject Term: MOLYBDENUM compounds; Subject Term: CHALCOGENIDES; Subject Term: NANOWIRES; Subject Term: DENSITY functional theory; Subject Term: DOPING agents (Chemistry); Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.cplett.2014.10.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99209663&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wie, Jeong Jae AU - Chatterjee, Sourav AU - Wang, David H. AU - Tan, Loon-Seng AU - Ravi Shankar, M. AU - White, Timothy J. T1 - Azobenzene-functionalized polyimides as wireless actuators. JO - Polymer JF - Polymer Y1 - 2014/11/05/ VL - 55 IS - 23 M3 - Article SP - 5915 EP - 5923 SN - 00323861 AB - Wireless transduction of light into mechanical work manifested as shape-changing surfaces, adaptive structures, or actuators is a topic of considerable recent interest. In the work reported here, the photomechanical responses of a new series of crosslinked azobenzene-functionalized polyimides prepared with increasing backbone rigidity over a range of crosslinker concentrations are examined. The baseline properties of the materials were characterized with X-ray diffraction, thermal analysis, and photomechanical examination including cantilever bending experiments and tensile tests. Increasing the rigidity of the backbone repeat unit reduces the magnitude of the shape change (observed as cantilever deflection) but increases the magnitude of photogenerated stress (in tensile tests). The promise of these materials as wireless actuators was examined in photoinitiated snap-through experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AZOBENZENE KW - POLYIMIDES KW - ACTUATORS KW - PHOTOMECHANICAL processes KW - CROSSLINKED polymers KW - X-ray diffraction KW - TENSILE test (Materials) KW - Azobenzene KW - Photomechanical KW - Polyimide N1 - Accession Number: 99232176; Wie, Jeong Jae 1,2 Chatterjee, Sourav 3 Wang, David H. 1,4 Tan, Loon-Seng 1; Email Address: loon.tan@us.af.mil Ravi Shankar, M. 3; Email Address: ravishm@pitt.edu White, Timothy J. 1; Email Address: timothy.white.24@us.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, 3005 Hobson Way, Wright-Patterson Air Force Base, OH 45433, USA 2: Azimuth Corporation, 4134 Linden Avenue, Dayton, OH 45432, USA 3: University of Pittsburgh, Department of Industrial Engineering, 3700 O'Hara Street, Pittsburgh, PA 15261, USA 4: UES Inc., 4401 Dayton Xenia Road, Beavercreek, OH 45432, USA; Source Info: Nov2014, Vol. 55 Issue 23, p5915; Subject Term: AZOBENZENE; Subject Term: POLYIMIDES; Subject Term: ACTUATORS; Subject Term: PHOTOMECHANICAL processes; Subject Term: CROSSLINKED polymers; Subject Term: X-ray diffraction; Subject Term: TENSILE test (Materials); Author-Supplied Keyword: Azobenzene; Author-Supplied Keyword: Photomechanical; Author-Supplied Keyword: Polyimide; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.polymer.2014.06.084 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99232176&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Biffinger, Justin C. AU - Barlow, Daniel E. AU - Pirlo, Russell K. AU - Babson, David M. AU - Fitzgerald, Lisa A. AU - Zingarelli, Sandra AU - Nadeau, Lloyd J. AU - Crookes-Goodson, Wendy J. AU - Jr.Russell, John N. T1 - A direct quantitative agar-plate based assay for analysis of Pseudomonas protegens Pf-5 degradation of polyurethane films. JO - International Biodeterioration & Biodegradation JF - International Biodeterioration & Biodegradation Y1 - 2014/11/02/Nov2014 Part B VL - 95 M3 - Article SP - 311 EP - 319 SN - 09648305 AB - A quantitative assay was developed for the direct measurement of polymer film degradation from bacterial colonies on agar plates. Small (1 mm diameter) colonies of Pseudomonas protegens Pf-5 (formerly Pseudomonas fluorescens Pf-5) were used for this work. Interactions between the Pf-5 colonies and thin polyurethane (PU) coatings on ZnSe coupons were evaluated for degradation using infrared spectroscopy. Three different coatings were analyzed and were formed from 1) a colloidal, aqueous – based polyester PU (Impranil ® DLN); 2) an organic solvent – based polyester PU (Irogran); and 3) an organic solvent – based polyether PU (AS-P108). Over a 24 h time period at 30 °C, citrate exposed Pf-5 cultures rapidly degraded Impranil coatings, consistent with analogous zone clearing assays. However, the Irogran and AS-P108 PU's, which are not directly compatible with zone clearing assays, showed no measureable degradation by the coating assay under identical conditions. These results demonstrated the capability to evaluate any variety of polymer formulation as solid films under identical biological conditions. The results also show that rapid microbial degradation of colloidal polyurethanes such as Impranil are not necessarily representative of activity towards other PU materials. [ABSTRACT FROM AUTHOR] AB - Copyright of International Biodeterioration & Biodegradation is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOLOGICAL assay KW - PSEUDOMONAS KW - BIODEGRADATION KW - POLYURETHANES KW - BIOFILMS KW - BACTERIAL colonies KW - INFRARED spectroscopy KW - Biodegradation KW - Citrate KW - FTIR spectroscopy KW - Impranil KW - Polyurethane KW - Pseudomonas biofilms N1 - Accession Number: 99231146; Biffinger, Justin C. 1 Barlow, Daniel E. 1; Email Address: daniel.barlow@nrl.navy.mil Pirlo, Russell K. 1 Babson, David M. 2 Fitzgerald, Lisa A. 1 Zingarelli, Sandra 3 Nadeau, Lloyd J. 3 Crookes-Goodson, Wendy J. 3 Jr.Russell, John N. 1; Affiliation: 1: Chemistry Division, US Naval Research Laboratory, 4555 Overlook Ave. SW., Washington, DC 20375, USA 2: Nova Research, Incorporated, 1900 Elkin Street, Alexandria, VA 22308, USA 3: Soft Matter Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Nov2014 Part B, Vol. 95, p311; Subject Term: BIOLOGICAL assay; Subject Term: PSEUDOMONAS; Subject Term: BIODEGRADATION; Subject Term: POLYURETHANES; Subject Term: BIOFILMS; Subject Term: BACTERIAL colonies; Subject Term: INFRARED spectroscopy; Author-Supplied Keyword: Biodegradation; Author-Supplied Keyword: Citrate; Author-Supplied Keyword: FTIR spectroscopy; Author-Supplied Keyword: Impranil; Author-Supplied Keyword: Polyurethane; Author-Supplied Keyword: Pseudomonas biofilms; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ibiod.2014.09.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99231146&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tumer, Irem Y. AU - Lewis, Kemper AU - Ghosh, Sourobh AU - Devendorf, Erich T1 - Exploring the effectiveness of parallel systems in distributed design processes subjected to stochastic disruptions. JO - AI EDAM JF - AI EDAM Y1 - 2014/11// VL - 28 IS - 4 M3 - Article SP - 399 EP - 412 SN - 08900604 AB - During the design of complex systems, a design process may be subjected to stochastic disruptions, interruptions, and changes, which can be described broadly as “design impulses.” These impulses can have a significant impact on the transient response and converged equilibrium for the design system. We distinguish this research by focusing on the interactions between local and architectural impulses in the form of designer mistakes and dissolution, division, and combination impulses, respectively, for a distributed design case study. We provide statistical support for the “parallel character hypothesis,” which asserts that parallel arrangements generally best mitigate dissolution and division impulses. We find that local impulses tend to slow convergence, but systems also subjected to dissolution or division impulses still favor parallel arrangements. We statistically uphold the conclusion that the strategy to mitigate combination impulses is unaffected by the presence of local impulses. [ABSTRACT FROM AUTHOR] AB - Copyright of AI EDAM is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYSTEMS engineering KW - PARALLEL processing (Electronic computers) KW - STOCHASTIC convergence KW - STATISTICS KW - INDUSTRIAL engineering KW - MECHANICAL engineering KW - Collaborative Engineering KW - Complex Systems KW - Design Architecture KW - Distributed Design KW - Impulses KW - Process Modeling N1 - Accession Number: 98595067; Tumer, Irem Y. Lewis, Kemper 1 Ghosh, Sourobh 2 Devendorf, Erich 3; Affiliation: 1: Department of Mechanical and Aerospace Engineering, University at Buffalo, SUNY, Buffalo, New York, USA 2: Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA 3: Information Directorate, Air Force Research Laboratory, Rome, New York, USA; Source Info: Nov2014, Vol. 28 Issue 4, p399; Subject Term: SYSTEMS engineering; Subject Term: PARALLEL processing (Electronic computers); Subject Term: STOCHASTIC convergence; Subject Term: STATISTICS; Subject Term: INDUSTRIAL engineering; Subject Term: MECHANICAL engineering; Author-Supplied Keyword: Collaborative Engineering; Author-Supplied Keyword: Complex Systems; Author-Supplied Keyword: Design Architecture; Author-Supplied Keyword: Distributed Design; Author-Supplied Keyword: Impulses; Author-Supplied Keyword: Process Modeling; NAICS/Industry Codes: 541330 Engineering Services; Number of Pages: 14p; Document Type: Article L3 - 10.1017/S0890060414000559 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98595067&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Flaherty, W. AU - Reedy, Todd M. AU - Elliott, Gregory S. AU - Austin, J. M. AU - Schmit, Ryan F. AU - Crafton, J. T1 - Investigation of Cavity Flow Using Fast-Response Pressure-Sensitive Paint. JO - AIAA Journal JF - AIAA Journal Y1 - 2014/11// VL - 52 IS - 11 M3 - Article SP - 2462 EP - 2470 SN - 00011452 AB - An experimental study was conducted to investigate the pressure fluctuations on the entire sidewall of a rectangular cavity with an L/D of 5.67 using fast-response pressure-sensitive paint. Additionally, the performance of four different passive flow-control devices was quantified. Experiments were conducted in the Trisonic Gasdynamics Facility at the Air Force Research Laboratory at Mach 0.7 and 1.5. The frequency spectrum (including Rossiter tones) and sound pressure levels obtained from the pressure-sensitive paint measurements are validated against data taken with conventional dynamic pressure sensors. The complex flow phenomena over the cavity wall were visualized, and full-wall pressure spectra were calculated. The rod in crossflow showed the best peak suppression, followed closely by the flat spoiler. The large triangular steps showed moderate peak suppression, whereas the ridges did not suppress the peaks at all. High-resolution measurements of both temporal and spatial pressure fluctuations on the wall allowed for the visualization of sound pressure level distribution over the entire cavity wall. This revealed a strong dependence between the Rossiter tone modes and the spatial distribution of sound pressure levels that was not possible to resolve with traditional discrete pressure transducers. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRESSURE-sensitive paint KW - RESEARCH KW - FLUCTUATIONS (Physics) KW - MACH number KW - SOUND pressure KW - AIR Force Research Laboratory (Edwards Air Force Base, Calif.) N1 - Accession Number: 99262902; Flaherty, W. 1 Reedy, Todd M. 1 Elliott, Gregory S. 1 Austin, J. M. 1 Schmit, Ryan F. 2 Crafton, J. 3; Affiliation: 1: University of Illinois at Urbana-Champaign, Champaign, Illinois 61801 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 3: Innovative Scientific Solutions, Inc., Dayton, Ohio 45440; Source Info: Nov2014, Vol. 52 Issue 11, p2462; Subject Term: PRESSURE-sensitive paint; Subject Term: RESEARCH; Subject Term: FLUCTUATIONS (Physics); Subject Term: MACH number; Subject Term: SOUND pressure; Company/Entity: AIR Force Research Laboratory (Edwards Air Force Base, Calif.); Number of Pages: 9p; Document Type: Article L3 - 10.2514/1.J052864 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99262902&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Allison, Thomas P. T1 - Robot Futures. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2014/11//Nov/Dec2014 VL - 28 IS - 6 M3 - Book Review SP - 148 EP - 150 PB - Superintendent of Documents SN - 1555385X KW - ROBOTICS KW - NONFICTION KW - NOURBAKHSH, Illah Reza KW - ROBOT Futures (Book) N1 - Accession Number: 99434197; Allison, Thomas P. 1; Affiliation: 1: US Air Force Academy, Colorado; Source Info: Nov/Dec2014, Vol. 28 Issue 6, p148; Subject Term: ROBOTICS; Subject Term: NONFICTION; Reviews & Products: ROBOT Futures (Book); People: NOURBAKHSH, Illah Reza; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99434197&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Comfort, Kristen K. AU - Maurer, Elizabeth I. AU - Hussain, Saber M. T1 - Slow release of ions from internalized silver nanoparticles modifies the epidermal growth factor signaling response. JO - Colloids & Surfaces B: Biointerfaces JF - Colloids & Surfaces B: Biointerfaces Y1 - 2014/11// VL - 123 M3 - Article SP - 136 EP - 142 SN - 09277765 AB - Due to their distinctive physiochemical properties, including a robust antibacterial activity and plasmonic capability, hundreds of consumer and medical products contain colloidal silver nanoparticles (AgNPs). However, even at sub-toxic dosages, AgNPs are able to disrupt cell functionality, through a yet unknown mechanism. Moreover, internalized AgNPs have the potential to prolong this disruption, even after the removal of excess particles. In the present study, we evaluated the impact, mechanism of action, and continual effects of 50 nm AgNP exposure on epidermal growth factor (EGF) signal transduction within a human keratinocyte (HaCaT) cell line. After AgNP expose, EGF signaling was initially obstructed due to the dissolution of particles into silver ions. However, at longer durations, the internalized AgNPs increased EGF signaling activity. This latter behavior correlated to sustained HaCaT stress, believed to be maintained through the continual dissolution of internalized AgNPs. This study raises concerns that even after exposure ceases, the retained nanomaterials are capable of acting as a slow-release mechanism for metallic ions; continually stressing and modifying normal cellular functionality. [ABSTRACT FROM AUTHOR] AB - Copyright of Colloids & Surfaces B: Biointerfaces is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILVER nanoparticles KW - EPIDERMAL growth factor KW - CELLULAR signal transduction KW - ANTIBACTERIAL agents KW - MEDICAL supplies KW - KERATINOCYTES KW - EGF signaling KW - Ionic dissolution KW - Lysosomal fluid KW - Silver nanoparticle KW - Stress response N1 - Accession Number: 99826410; Comfort, Kristen K. 1; Email Address: kcomfort1@udayton.edu Maurer, Elizabeth I. 2 Hussain, Saber M. 2; Affiliation: 1: University of Dayton, Department of Chemical and Materials Engineering, Dayton, OH 45469, USA 2: Molecular Bioeffects Branch, Human Effectiveness Directorate, Air Force Research Laboratory, Wright Patterson AFB, OH 45433, USA; Source Info: Nov2014, Vol. 123, p136; Subject Term: SILVER nanoparticles; Subject Term: EPIDERMAL growth factor; Subject Term: CELLULAR signal transduction; Subject Term: ANTIBACTERIAL agents; Subject Term: MEDICAL supplies; Subject Term: KERATINOCYTES; Author-Supplied Keyword: EGF signaling; Author-Supplied Keyword: Ionic dissolution; Author-Supplied Keyword: Lysosomal fluid; Author-Supplied Keyword: Silver nanoparticle; Author-Supplied Keyword: Stress response; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; NAICS/Industry Codes: 417930 Professional machinery, equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423450 Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.colsurfb.2014.09.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99826410&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hall, Carl A. AU - Kulatilaka, Waruna D. AU - Gord, James R. AU - Pitz, Robert W. T1 - Quantitative atomic hydrogen measurements in premixed hydrogen tubular flames. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2014/11// VL - 161 IS - 11 M3 - Article SP - 2924 EP - 2932 SN - 00102180 AB - Quantitative measurements of atomic hydrogen are reported in laminar premixed tubular flames using femtosecond two-photon laser-induced fluorescence. The H-atom fluorescence is corrected for collisional quenching by using local values of major-species concentrations and temperature measured by spontaneous Raman scattering. Lean hydrogen flames are sustained with two different diluents (N 2 , CO 2 ) to investigate low–Lewis number flames under high curvature. When compared to planar stretched flames, the curved tubular flames enhance the H-atom concentration and temperature through increased preferential diffusion. Peak H-atom number densities on the order of 10 15 per cm 3 are measured, and absolute H-atom profiles show differences up to 40% in peak number density and flame radial position when compared to the pseudo one-dimensional flame model with detailed chemistry and transport. Although the overall agreement in absolute H-atom profiles is “good” considering the relative uncertainties in the model and experiment, the differences suggest the ability for this flame geometry to provide evidence for revision of molecular transport and chemical kinetic modeling in flames with substantial preferential diffusion. Peak absolute H-atom concentrations vary up to 30% depending on the assumed temperature dependency for the collisional quenching factors pointing to the need for high-temperature data for H-atom collisional quenching. Relative H-atom profiles in the flames are minimally affected by the collisional quenching. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATOMIC hydrogen KW - QUANTITATIVE research KW - FLAME KW - FEMTOSECOND lasers KW - FLUORESCENCE KW - TEMPERATURE effect KW - RAMAN scattering KW - Femtosecond two-photon LIF KW - Hydrogen atom KW - Premixed tubular flame KW - Raman spectroscopy N1 - Accession Number: 98577161; Hall, Carl A. 1; Email Address: carl.a.hall@vanderbilt.edu Kulatilaka, Waruna D. 2 Gord, James R. 3 Pitz, Robert W. 1; Affiliation: 1: Mechanical Engineering Department, Vanderbilt University, Box 1592 Station B, Nashville, TN 37235, USA 2: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, OH 45431, USA 3: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Nov2014, Vol. 161 Issue 11, p2924; Subject Term: ATOMIC hydrogen; Subject Term: QUANTITATIVE research; Subject Term: FLAME; Subject Term: FEMTOSECOND lasers; Subject Term: FLUORESCENCE; Subject Term: TEMPERATURE effect; Subject Term: RAMAN scattering; Author-Supplied Keyword: Femtosecond two-photon LIF; Author-Supplied Keyword: Hydrogen atom; Author-Supplied Keyword: Premixed tubular flame; Author-Supplied Keyword: Raman spectroscopy; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.combustflame.2014.05.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98577161&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gallagher, Mark A. AU - Sorice, Justin E. T1 - Considering Alternative Nuclear Targeting Strategies. JO - Comparative Strategy JF - Comparative Strategy Y1 - 2014/11//Nov/Dec2014 VL - 33 IS - 5 M3 - Article SP - 451 EP - 465 SN - 01495933 AB - We construct an analysis framework for nuclear force structure where the ends are deterrence objectives, the ways are viable targeting strategies, and the means are nuclear forces. Deterring adversaries requires both capability and will that convinces them not to act. A country's will is perceived as credible only if the war plans and targeting strategies are consistent with a nuclear power's principles, such as the Just War Doctrine. The United States currently applies a counter-force targeting strategy; however, hardening, mobility, deceptions, and defensive systems continue to challenge the ability to target another's nuclear weapons. Alternative strategies, such as counter-economic (energy, transportation, financial center, or communications) and counter-leadership may be feasible. However, with fewer nuclear weapons, fewer targeting strategies are viable. [ABSTRACT FROM AUTHOR] AB - Copyright of Comparative Strategy is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUCLEAR terrorism KW - DETERRENCE (Military strategy) KW - NUCLEAR weapons KW - COMMAND of troops KW - UNITED States N1 - Accession Number: 99525368; Gallagher, Mark A. 1 Sorice, Justin E. 1; Affiliation: 1: Air Force Studies, Analyses, & Assessments Headquarters, United States Air Force, Washington, DC, USA; Source Info: Nov/Dec2014, Vol. 33 Issue 5, p451; Subject Term: NUCLEAR terrorism; Subject Term: DETERRENCE (Military strategy); Subject Term: NUCLEAR weapons; Subject Term: COMMAND of troops; Subject Term: UNITED States; Number of Pages: 15p; Document Type: Article L3 - 10.1080/01495933.2014.962964 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99525368&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhou, Zhong AU - Gill, Amrinder AU - Telang, Abhishek AU - Mannava, Seetha AU - Langer, Kristina AU - Vasudevan, Vijay AU - Qian, Dong T1 - Experimental and Finite Element Simulation Study of Thermal Relaxation of Residual Stresses in Laser Shock Peened IN718 SPF Superalloy. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2014/11// VL - 54 IS - 9 M3 - Article SP - 1597 EP - 1611 SN - 00144851 AB - An integrated experimental and modeling/simulation approach was developed to investigate and secure a quantified knowledge of the impact of high temperature exposures on the stability of residual stresses in a laser shock peened (LSP) high temperature aero-engine alloy, IN718 SPF (super-plastically formed). Single dimple LSP and overlap LSP treatments were carried out utilizing a Nd:Glass laser ( λ = 1.052 μm), and subsequent heat treatments on the LSP-treated coupons were conducted at different temperatures between 550 and 700 °C. A 3-D nonlinear finite element (FE) computational model and the rate-dependent Johnson-Cook material model were calibrated using the experimental results of residual stress from the single dimple LSP and thermal relaxation treatments, and were further extended to the overlap LSP treatment case. Both experimental and FE simulations show that: a) a high level of compressive residual stress (~700 MPa at surface) and residual stress depth (~0.4-0.6 mm) were achieved following LSP, and b) the overlap LSP treatment gave higher residual stress and greater depth. The magnitudes of the initial residual stress (and plastic strain), heating temperature and exposure time were identified as the key parameters controlling the thermal relaxation behavior. The stress relaxation mainly occurs initially before 20 min exposure and the extent of relaxation increases with an increase in temperature and a higher magnitude of the initial as-peened residual stress. In addition, in regions deeper than ~300 μm or after initial thermal exposure where the residual stress was lower than ~300 MPa, stress relaxation was found to be negligible. Kinetic analysis of the experimental thermal relaxation data based on Zener-Wert-Avrami model gave an activation enthalpy of 2.87 to 3.77 eV, which is near that reported in the literatures for volume and/or substitutional solute diffusion in Nickel. These results suggest that thermal relaxation of the LSP-induced residual stress occurs by a creep-like mechanism involving recovery, rearrangement and annihilation of dislocations by climb. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FINITE element method KW - NUMERICAL analysis KW - STRESS relieving (Materials) KW - RESIDUAL stresses KW - STRENGTH of materials KW - STRAINS & stresses (Mechanics) KW - IN718 SPF alloy KW - Laser shock peening KW - Residual stress KW - Thermal relaxation KW - X-ray diffraction N1 - Accession Number: 98980949; Zhou, Zhong 1 Gill, Amrinder 2 Telang, Abhishek 2 Mannava, Seetha 2 Langer, Kristina 3 Vasudevan, Vijay 2 Qian, Dong; Email Address: dong.qian@utdallas.edu; Affiliation: 1: Department of Mechanical Engineering, University of Texas at Dallas, 800 West Campbell Road Richardson 75080 USA 2: Department of Mechanical and Materials Engineering, University of Cincinnati, Cincinnati 45221 USA 3: Air Force Research Laboratory/RQSS, Wright Patterson Air Force Base, Dayton 45433 USA; Source Info: Nov2014, Vol. 54 Issue 9, p1597; Subject Term: FINITE element method; Subject Term: NUMERICAL analysis; Subject Term: STRESS relieving (Materials); Subject Term: RESIDUAL stresses; Subject Term: STRENGTH of materials; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: IN718 SPF alloy; Author-Supplied Keyword: Laser shock peening; Author-Supplied Keyword: Residual stress; Author-Supplied Keyword: Thermal relaxation; Author-Supplied Keyword: X-ray diffraction; Number of Pages: 15p; Document Type: Article L3 - 10.1007/s11340-014-9940-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98980949&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rojhirunsakool, T. AU - Singh, A. R. P. AU - Nag, S. AU - Hwang, J. Y. AU - Tiley, J. AU - Banerjee, R. T1 - Temporal evolution of non-equilibrium γ' precipitates in a rapidly quenched nickel base superalloy. JO - Intermetallics JF - Intermetallics Y1 - 2014/11// VL - 54 M3 - Article SP - 218 EP - 224 SN - 09669795 AB - The temporal evolution of non-equilibrium γ' precipitates in a rapidly quenched and isothermally annealed commercial nickel base superalloy has been investigated by coupling transmission electron microscopy and atom probe tomography. When subjected to rapid quenching from above the γ' solvus temperature, the supersaturated single phase γ matrix appears to undergo compositional phase separation possibly via spinodal decomposition to form solute-rich and solute-depleted regions. The regions that have a depletion in Cr and Co undergo an ordering process resulting in the γ' domains which exhibit a far-from equilibrium composition. Upon isothermal annealing, the γ/γ' interface sharpens and the compositions of both γ and γ' phases approach equilibrium. The influence of a non-classical mechanism of γ' precipitation on the size distribution of precipitates as well as the precipitate and matrix compositions, and its subsequent evolution during isothermal annealing has been discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Intermetallics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NON-equilibrium reactions KW - PRECIPITATION (Chemistry) KW - METALS -- Quenching KW - HEAT resistant alloys KW - NICKEL alloys KW - ANNEALING of metals KW - B. Annealing KW - B. Order/disorder transformation KW - B. Phase transformation KW - D. Microstructure KW - F. Atom probe KW - F. Electron microscopy transmission N1 - Accession Number: 97386585; Rojhirunsakool, T. 1 Singh, A. R. P. 1 Nag, S. 2 Hwang, J. Y. 3 Tiley, J. 4 Banerjee, R. 1; Email Address: banerjee@unt.edu; Affiliation: 1: Center for Advanced Research and Technology, Department of Materials Science and Engineering, University of North Texas, Denton, TX, USA 2: CMT Structural and Functional Metals Lab, GE Global Research Center, Niskayuna, NY, USA 3: Carbon Convergence Materials Research Center, Korean Institute of Science and Technology, Korea 4: Air Force Research Laboratory, Dayton, OH, USA; Source Info: Nov2014, Vol. 54, p218; Subject Term: NON-equilibrium reactions; Subject Term: PRECIPITATION (Chemistry); Subject Term: METALS -- Quenching; Subject Term: HEAT resistant alloys; Subject Term: NICKEL alloys; Subject Term: ANNEALING of metals; Author-Supplied Keyword: B. Annealing; Author-Supplied Keyword: B. Order/disorder transformation; Author-Supplied Keyword: B. Phase transformation; Author-Supplied Keyword: D. Microstructure; Author-Supplied Keyword: F. Atom probe; Author-Supplied Keyword: F. Electron microscopy transmission; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.intermet.2014.06.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97386585&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yi, H. AU - Tipton, J. AU - Kihm, K.D. AU - Pratt, D.M. AU - Swanson, A.D. AU - Rawal, S. T1 - Effect of disjoining pressure (Π) on multi-scale modeling for evaporative liquid metal (Na) capillary. JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2014/11// VL - 78 M3 - Article SP - 137 EP - 149 SN - 00179310 AB - This work presents a new multiscale model of an evaporating liquid metal capillary meniscus under nonequilibrium evaporation sustaining a nonisothermal interface. The primary investigation is elaborated on to examine the critical role of the disjoining pressure, which consists of both the traditional van der Waals component and a new electronic pressure component, for the case of liquid metals. The fully extended dispersion force is modeled along with an electronic disjoining pressure component that is unique to liquid metals attributing to their abundant free electrons. For liquid sodium (Na), as a favorable coolant for high temperature two-phase devices, the extended meniscus thin film model (sub-microscale) is coupled to a CFD model of the evaporating bulk meniscus (sub-millimeter scale). Two extreme cases are compared, i.e. with or without incorporation of the electronic disjoining pressure component. It is shown that the existence of electronic component of the disjoining pressure leads towards larger total capillary meniscus surface areas and larger net evaporative mass flow rates. Furthermore, the net evaporative mass flux in the bulk meniscus region is needed to be accounted for to obtain a true picture of the total capillary evaporation transport. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRESSURE KW - MULTISCALE modeling KW - EVAPORATION (Chemistry) KW - LIQUID metals KW - CAPILLARY flow (Fluid dynamics) KW - NONEQUILIBRIUM flow KW - Capillary meniscus KW - Disjoining pressure KW - Electronic degeneration KW - Evaporative thin film KW - Liquid metal (sodium) KW - Work function N1 - Accession Number: 97845314; Yi, H. 1 Tipton, J. 1 Kihm, K.D. 1; Email Address: kkihm@utk.edu Pratt, D.M. 2 Swanson, A.D. 2 Rawal, S. 3; Affiliation: 1: The University of Tennessee, Knoxville, TN 37996, USA 2: Air Force Research Laboratory, WPAFB, OH 45433, USA 3: Lockheed Martin Space Systems Company, Denver, CO 80201, USA; Source Info: Nov2014, Vol. 78, p137; Subject Term: PRESSURE; Subject Term: MULTISCALE modeling; Subject Term: EVAPORATION (Chemistry); Subject Term: LIQUID metals; Subject Term: CAPILLARY flow (Fluid dynamics); Subject Term: NONEQUILIBRIUM flow; Author-Supplied Keyword: Capillary meniscus; Author-Supplied Keyword: Disjoining pressure; Author-Supplied Keyword: Electronic degeneration; Author-Supplied Keyword: Evaporative thin film; Author-Supplied Keyword: Liquid metal (sodium); Author-Supplied Keyword: Work function; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2014.06.042 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97845314&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dalle, Derek J. AU - Torrez, Sean M. AU - Driscoll, James F. AU - Bolender, Michael A. AU - Bowcutt, Kevin G. T1 - Minimum-Fuel Ascent of a Hypersonic Vehicle Using Surrogate Optimization. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2014/11//Nov/Dec2014 VL - 51 IS - 6 M3 - Article SP - 1971 EP - 1986 SN - 00218669 AB - A general strategy is identified to compute the minimum fuel required for the ascent of a generic hypersonic vehicle that is propelled by a dual-mode ramjet-scramjet engine with hydrogen fuel. The study addresses the ascent of an accelerator vehicle rather than a high-speed cruiser. Two general types of ascent trajectories are considered: acceleration within scramjet mode, and acceleration across the ramjet-scramjet transition boundary maximum acceleration and maximum dynamic pressure (lowest allowed altitude) were shown to be near optimum for scramjetmode trajectories, but optimized trajectories were found to be more complex when both modes are considered. The first-principles model used in this paper computes the combustion efficiency using fmite-rate chemistry and a fuel-air mixing model. It also computes the inlet efficiency with a shock wave interaction code, and thus avoids empirical formulas for efficiency that were used in previous models. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERSONIC aerodynamics KW - RESEARCH KW - HYPERSONIC flow KW - HYPERSONIC planes KW - AIRPLANES -- Ramjet engines KW - SHOCK waves N1 - Accession Number: 100108787; Dalle, Derek J. 1 Torrez, Sean M. 1 Driscoll, James F. 1 Bolender, Michael A. 2 Bowcutt, Kevin G. 3; Affiliation: 1: University of Michigan, Ann Arbor, Michigan 48109 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 3: Boeing Company, Huntington Beach, California 92647; Source Info: Nov/Dec2014, Vol. 51 Issue 6, p1971; Subject Term: HYPERSONIC aerodynamics; Subject Term: RESEARCH; Subject Term: HYPERSONIC flow; Subject Term: HYPERSONIC planes; Subject Term: AIRPLANES -- Ramjet engines; Subject Term: SHOCK waves; NAICS/Industry Codes: 336411 Aircraft Manufacturing; Number of Pages: 14p; Document Type: Article L3 - 10.2514/1.C032617 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100108787&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Knoerzer, Timm A.1, timm.knoerzer@usafa.edu AU - Balaich, Gary J.1 AU - Miller, Hannah A.1 AU - Iacono, Scott T.1, scott.iacono@usafa.edu T1 - An Integrated Laboratory Approach toward the Preparation of Conductive Poly(phenylenevinylene) Polymers. JO - Journal of Chemical Education JF - Journal of Chemical Education J1 - Journal of Chemical Education PY - 2014/11// Y1 - 2014/11// VL - 91 IS - 11 CP - 11 M3 - Article SP - 1976 EP - 1980 SN - 00219584 AB - Poly(phenylene vinylene) (PPV) represents an important class of conjugated, conducting polymers that have been readily exploited in the preparation of organic electronic materials. In this experiment, students prepare a PPV polymer via a facile multistep synthetic sequence with robust spectroscopic evaluation of synthetic intermediates and the final product. The synthetic sequence could be applied by university instructors as a capstone project for an undergraduate organic chemistry laboratory or as a centerpiece project for either a polymer or integrated laboratory course. The initial synthetic step could be segmented and used as a modular piece in the traditional introductory organic chemistry laboratory. In either case, the resultant PPV polymer is analyzed by UV-- vis and fluorescence spectroscopy to determine the quantum yield which promotes enhanced student understanding of the photophysical properties of the material. In addition, GPC analysis is completed to reveal the molecular weight and polydispersity of the polymer. Students completing this experiment gain valuable experience in organic/polymer synthesis and structural characterization utilizing GC/MS, GPC, NMR, UV-vis, and fluorescence spectroscopy, as well as in the mechanistic aspects and practical application of some of the classic transformations in organic chemistry including the SN2 reaction, nucleophilic acyl substitution, organometallic chemistry, and Wittig reaction. [ABSTRACT FROM AUTHOR] KW - Organic chemistry -- Study & teaching (Higher) KW - Conducting polymers -- Research KW - Polyphenylene vinylene -- Research KW - Molecular weights -- Research KW - Polymers -- Study & teaching N1 - Accession Number: 99807915; Authors:Knoerzer, Timm A. 1 Email Address: timm.knoerzer@usafa.edu; Balaich, Gary J. 1; Miller, Hannah A. 1; Iacono, Scott T. 1 Email Address: scott.iacono@usafa.edu; Affiliations: 1: Department of Chemistry, United States Air Force Academy, USAF Academy, Colorado 80840, United States; Subject: Conducting polymers -- Research; Subject: Polyphenylene vinylene -- Research; Subject: Molecular weights -- Research; Subject: Polymers -- Study & teaching; Subject: Organic chemistry -- Study & teaching (Higher); Author-Supplied Keyword: Chromatography; Author-Supplied Keyword: Hands-On Learning/Manipulatives; Author-Supplied Keyword: Laboratory Instruction; Author-Supplied Keyword: NMR Spectroscopy; Author-Supplied Keyword: Organic Chemistry; Author-Supplied Keyword: Polymer Chemistry; Author-Supplied Keyword: Synthesis; Author-Supplied Keyword: Upper-Division Undergraduate; Author-Supplied Keyword: UV-Vis Spectroscopy; Number of Pages: 5p; Record Type: Article L3 - 10.1021/ed50022m UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=99807915&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR AU - Chatterjee, Kausik AU - Roadcap, John R. AU - Singh, Surendra T1 - A new Green's function Monte Carlo algorithm for the solution of the two-dimensional nonlinear Poisson–Boltzmann equation: Application to the modeling of the communication breakdown problem in space vehicles during re-entry. JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2014/11// VL - 276 M3 - Article SP - 479 EP - 485 SN - 00219991 AB - The objective of this paper is the exposition of a recently-developed, novel Green's function Monte Carlo (GFMC) algorithm for the solution of nonlinear partial differential equations and its application to the modeling of the plasma sheath region around a cylindrical conducting object, carrying a potential and moving at low speeds through an otherwise neutral medium. The plasma sheath is modeled in equilibrium through the GFMC solution of the nonlinear Poisson–Boltzmann (NPB) equation. The traditional Monte Carlo based approaches for the solution of nonlinear equations are iterative in nature, involving branching stochastic processes which are used to calculate linear functionals of the solution of nonlinear integral equations. Over the last several years, one of the authors of this paper, K. Chatterjee has been developing a philosophically-different approach, where the linearization of the equation of interest is not required and hence there is no need for iteration and the simulation of branching processes. Instead, an approximate expression for the Green's function is obtained using perturbation theory, which is used to formulate the random walk equations within the problem sub-domains where the random walker makes its walks. However, as a trade-off, the dimensions of these sub-domains have to be restricted by the limitations imposed by perturbation theory. The greatest advantage of this approach is the ease and simplicity of parallelization stemming from the lack of the need for iteration, as a result of which the parallelization procedure is identical to the parallelization procedure for the GFMC solution of a linear problem. The application area of interest is in the modeling of the communication breakdown problem during a space vehicle's re-entry into the atmosphere. However, additional application areas are being explored in the modeling of electromagnetic propagation through the atmosphere/ionosphere in UHF/GPS applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GREEN'S functions KW - MONTE Carlo method KW - ALGORITHMS KW - TWO-dimensional models KW - NONLINEAR equations KW - POISSON'S equation -- Numerical solutions KW - BOLTZMANN'S equation KW - SPACE vehicles KW - Communication breakdown problem KW - Green's function KW - Monte Carlo KW - Nonlinear Poisson–Boltzmann equation KW - Plasma sheath modeling KW - Random walk KW - Re-entry vehicle KW - UHF/GPS applications N1 - Accession Number: 97843406; Chatterjee, Kausik 1,2; Email Address: kausik.chatterjee.2@gmail.com Roadcap, John R. 3; Email Address: john.roadcap@us.af.mil Singh, Surendra 4; Email Address: surendra-singh@utulsa.edu; Affiliation: 1: Strategic and Military Space Division, Space Dynamics Laboratory, North Logan, UT 84341, United States 2: Center for Atmospheric and Space Sciences, Utah State University, Logan, UT 84322, United States 3: Air Force Research Laboratory, Kirtland AFB, NM 87117, United States 4: Department of Electrical Engineering, The University of Tulsa, Tulsa, OK 74104, United States; Source Info: Nov2014, Vol. 276, p479; Subject Term: GREEN'S functions; Subject Term: MONTE Carlo method; Subject Term: ALGORITHMS; Subject Term: TWO-dimensional models; Subject Term: NONLINEAR equations; Subject Term: POISSON'S equation -- Numerical solutions; Subject Term: BOLTZMANN'S equation; Subject Term: SPACE vehicles; Author-Supplied Keyword: Communication breakdown problem; Author-Supplied Keyword: Green's function; Author-Supplied Keyword: Monte Carlo; Author-Supplied Keyword: Nonlinear Poisson–Boltzmann equation; Author-Supplied Keyword: Plasma sheath modeling; Author-Supplied Keyword: Random walk; Author-Supplied Keyword: Re-entry vehicle; Author-Supplied Keyword: UHF/GPS applications; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jcp.2014.07.042 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97843406&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bialy, B. J. AU - Pasiliao, Crystal L. AU - Dinh, H. T. AU - Dixon, W. E. T1 - Tracking Control of Limit Cycle Oscillations in an Aero-Elastic System. JO - Journal of Dynamic Systems, Measurement, & Control JF - Journal of Dynamic Systems, Measurement, & Control Y1 - 2014/11// VL - 136 IS - 6 M3 - Article SP - 1 EP - 5 SN - 00220434 AB - Limit cycle oscillations (LCOs) affect current fighter aircraft and are expected to be present on next generation fighter aircraft. Current efforts in control systems designed to suppress LCO behavior have either used a linear model, restricting the flight regime, require exact knowledge of the system dynamics, or require uncertainties in the system dynamics to be linear-in-the-parameters and only present in the torsional stiffness. Furthermore, the aerodynamic model used in prior research efforts neglects nonlinear effects. This paper presents the development of a controller consisting of a continuous robust integral of the sign of the error (RISE) feedback term with a neural network (NN) feedforward term to achieve asymptotic tracking of uncertainties that do not satisfy the linear-in-the-parameters assumption. Simulation results are presented to validate the performance of the developed controller. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Dynamic Systems, Measurement, & Control is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIMIT cycles KW - RESEARCH KW - OSCILLATIONS KW - FIGHTER planes KW - FLIGHT control KW - TORSIONAL stiffness N1 - Accession Number: 99593816; Bialy, B. J. 1; Email Address: bialybj@ufl.edu Pasiliao, Crystal L. 2; Email Address: crystal.pasiliao@eglin.af.mil Dinh, H. T. 1; Email Address: huyentdinh@ufl.edu Dixon, W. E. 1; Email Address: wdixon@ufl.edu; Affiliation: 1: Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL 32611 2: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542; Source Info: Nov2014, Vol. 136 Issue 6, p1; Subject Term: LIMIT cycles; Subject Term: RESEARCH; Subject Term: OSCILLATIONS; Subject Term: FIGHTER planes; Subject Term: FLIGHT control; Subject Term: TORSIONAL stiffness; Number of Pages: 5p; Document Type: Article L3 - 10.1115/1.4027946 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99593816&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Michael Gehl AU - Sander Zandbergen AU - Ricky Gibson AU - Muriel Béchu AU - Nima Nader AU - Joshua Hendrickson AU - Jasmine Sears AU - Patrick Keiffer AU - Martin Wegener AU - Galina Khitrova T1 - Spectroscopic studies of resonant coupling of silver optical antenna arrays to a near-surface quantum well. JO - Journal of Optics JF - Journal of Optics Y1 - 2014/11// VL - 16 IS - 11 M3 - Article SP - 1 EP - 1 SN - 20408978 AB - The coupling of radiation emitted on semiconductor inter-band transitions to resonant optical-antenna arrays allows for enhanced light–matter interaction via the Purcell effect. Semiconductor optical gain also potentially allows for loss reduction in metamaterials. Here we extend our previous work on optically pumped individual near-surface InGaAs quantum wells coupled to silver split-ring-resonator arrays to wire and square-antenna arrays. By comparing the transient pump-probe experimental results with the predictions of a simple model, we find that the effective coupling is strongest for the split rings, even though the split rings have the weakest dipole moment. The effect of the latter must thus be overcompensated by a smaller effective mode volume of the split rings. Furthermore, we also present a systematic variation of the pump-pulse energy, which was fixed in our previous experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Optics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRUM analysis KW - MAGNETIC couplings KW - OPTICAL antennas KW - SILVER KW - ANTENNA arrays KW - QUANTUM wells KW - SURFACE plasmons KW - SEMICONDUCTOR optical amplifiers N1 - Accession Number: 99227446; Michael Gehl 1; Email Address: mgehl@optics.arizona.edu Sander Zandbergen 1 Ricky Gibson 1 Muriel Béchu 2 Nima Nader 1,3,4 Joshua Hendrickson 3 Jasmine Sears 1 Patrick Keiffer 1 Martin Wegener 2 Galina Khitrova 1; Affiliation: 1: College of Optical Sciences, University of Arizona, Tucson, AZ-85721 USA 2: Institut für Angewandte Physik, Institut für Nanotechnologie, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany 3: Air Force Research Laboratory, Sensors Directorate, Wright Patterson AFB, OH-45433, USA 4: Solid State Scientific Corporation, 12 Simon St. Nashua, NH-03060, USA; Source Info: Nov2014, Vol. 16 Issue 11, p1; Subject Term: SPECTRUM analysis; Subject Term: MAGNETIC couplings; Subject Term: OPTICAL antennas; Subject Term: SILVER; Subject Term: ANTENNA arrays; Subject Term: QUANTUM wells; Subject Term: SURFACE plasmons; Subject Term: SEMICONDUCTOR optical amplifiers; Number of Pages: 1p; Document Type: Article L3 - 10.1088/2040-8978/16/11/114016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99227446&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vitaliy N Pustovit AU - Augustine M Urbas AU - Tigran V Shahbazyan T1 - Energy transfer in plasmonic systems. JO - Journal of Optics JF - Journal of Optics Y1 - 2014/11// VL - 16 IS - 11 M3 - Article SP - 1 EP - 1 SN - 20408978 AB - We present our results on energy transfer between donor and acceptor molecules or quantum dots near a plasmonic nanoparticle. In such systems, the Förster resonance energy transfer is strongly modified due to plasmon-mediated coupling between donors and acceptors. The transfer efficiency is determined by a competition between transfer, radiation and dissipation that depends sensitively on system parameters. When donor and accepror spectral bands overlap with dipole surface plasmon resonance, the dominant transfer mechanism is through plasmon-enhanced radiative coupling. When transfer takes place from an ensemble of donors to an acceptor, a cooperative amplification of energy transfer takes place in a wide range of system parameters. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Optics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENERGY transfer KW - PLASMONICS (Electronics) KW - QUANTUM dots KW - NANOPARTICLES KW - SURFACE plasmon resonance KW - SPIN-spin interactions N1 - Accession Number: 99227456; Vitaliy N Pustovit 1 Augustine M Urbas 1 Tigran V Shahbazyan 2; Email Address: shahbazyan@jsums.edu; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, USA 2: Department of Physics, Jackson State University, Jackson, MS 39217, USA; Source Info: Nov2014, Vol. 16 Issue 11, p1; Subject Term: ENERGY transfer; Subject Term: PLASMONICS (Electronics); Subject Term: QUANTUM dots; Subject Term: NANOPARTICLES; Subject Term: SURFACE plasmon resonance; Subject Term: SPIN-spin interactions; Number of Pages: 1p; Document Type: Article L3 - 10.1088/2040-8978/16/11/114015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99227456&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vitaliy Pustovit AU - Sushmita Biswas AU - Richard Vaia AU - Augustine Urbas T1 - A nanolens-type enhancement in the linear and second harmonic response of a metallic dimer. JO - Journal of Optics JF - Journal of Optics Y1 - 2014/11// VL - 16 IS - 11 M3 - Article SP - 1 EP - 1 SN - 20408978 AB - In this paper we explore the linear and second-order nonlinear response of gold nanoparticle pairs (dimers). Despite that even-order nonlinear processes are forbidden in bulk centrosymmetric media like metals, second order nonlinear response exhibits a high degree of sensitivity for spherical nanoparticles where inversion symmetry is broken at the surface. Recent experiments demonstrate significant dependence of linear response and second-harmonic surface nonlinear response arising from the local fundamental field distribution in a dimer configuration. Our calculations are carried out taking into account high order multipolar interactions between metal nanoparticles, and demonstrate that linear and nonlinear optical responses of the dimer exhibit periodic behavior dependent on the separation distance between nanoparticles. This response increases for dimers with a large difference between particle sizes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Optics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GOLD nanoparticles KW - DIMERS KW - HARMONICS (Electric waves) KW - NONLINEAR optics KW - SYMMETRY (Physics) KW - SURFACE plasmon resonance KW - EXPERIMENTS N1 - Accession Number: 99227441; Vitaliy Pustovit 1; Email Address: vitaliy.pustovit.ctr@us.af.mil Sushmita Biswas 1 Richard Vaia 1 Augustine Urbas 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH-45433, USA; Source Info: Nov2014, Vol. 16 Issue 11, p1; Subject Term: GOLD nanoparticles; Subject Term: DIMERS; Subject Term: HARMONICS (Electric waves); Subject Term: NONLINEAR optics; Subject Term: SYMMETRY (Physics); Subject Term: SURFACE plasmon resonance; Subject Term: EXPERIMENTS; Number of Pages: 1p; Document Type: Article L3 - 10.1088/2040-8978/16/11/114010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99227441&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 103910400 T1 - An investigation of heat transfer to the implant-bone interface when drilling through a zirconia crown attached to a titanium or zirconia abutment. AU - Mason, Amy G. AU - Sutton, Alan AU - Turkyilmaz, Ilser Y1 - 2014/11// N1 - Accession Number: 103910400. Language: English. Entry Date: 20141030. Revision Date: 20150710. Publication Type: Journal Article; research. Journal Subset: Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Dental Care. NLM UID: 0376364. KW - Crowns KW - Titanium KW - Dental Implantation KW - Human KW - Analysis of Variance KW - Mann-Whitney U Test KW - Nonparametric Statistics SP - 1119 EP - 1125 JO - Journal of Prosthetic Dentistry JF - Journal of Prosthetic Dentistry JA - J PROSTHET DENT VL - 112 IS - 5 CY - New York, New York PB - Elsevier Science AB - Statement of problem Thermal injury to the implant-bone interface may lead to bone necrosis and loss of osseointegration. This is a concern during manipulation of the implant throughout the restorative phase of treatment. The risk of heat transfer to the implant-bone interface during abutment preparation or prosthesis removal should be considered. Purpose The purpose of the study was to examine the amount of heat transferred to the implant-bone interface when a zirconia crown is drilled to access the screw channel or section a crown with a high-speed dental handpiece. Material and methods Of the 64 ceramic-veneered zirconia crowns fabricated, 32 had a coping thickness of 0.5 mm and 32 had a coping thickness of 1.0 mm. The crowns were cemented on either titanium stock abutments or zirconia stock abutments. Each group was further subdivided to evaluate heat transfer when the screw channel was accessed or the crown was sectioned with a high-speed handpiece with or without irrigation. Temperature change was recorded for each specimen at the cervical and apical aspect of the implant with thermocouples and a logging thermometer. ANOVA was used to assess the statistical significance in temperature change between the test combinations, and nonparametric Mann-Whitney U tests were used to evaluate the findings. Results The use of irrigation during both crown removal processes yielded an average temperature increase of 3.59 ±0.35°C. Crown removal in the absence of irrigation yielded an average temperature increase of 18.76 ±3.09°C. When all parameter combinations in the presence of irrigation were evaluated, the maximum temperature change was below the threshold of thermal injury to bone. The maximum temperature change was above the threshold for thermal injury at the coronal aspect of the implant and below the threshold at the apical aspect in the absence of irrigation. Conclusions Within the limitations of this investigation, the use of irrigation with a high-speed dental handpiece to remove a ceramic-veneered zirconia crown results in a temperature increase at the implant-bone interface insufficient to cause irreversible damage. Conversely, a lack of irrigation may yield a temperature increase capable of producing irreversible damage at the coronal aspect of the implant. SN - 0022-3913 AD - Resident, United States Air Force Postgraduate Dental School, Lackland Air Force Base, Joint Base San Antonio, San Antonio, Texas AD - Director of Maxillofacial Prosthetics, United States Air Force Postgraduate Dental School, Lackland Air Force Base, Joint Base San Antonio, San Antonio, Texas AD - Assistant Professor and Director, Dental School Implant Clinic, Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, Texas DO - 10.1016/j.prosdent.2014.04.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=103910400&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 103910388 T1 - An investigation of the effect of scaling-induced surface roughness on bacterial adhesion in common fixed dental restorative materials. AU - Checketts, Matthew R. AU - Turkyilmaz, Ilser AU - Asar, Neset Volkan Y1 - 2014/11// N1 - Accession Number: 103910388. Language: English. Entry Date: 20141030. Revision Date: 20150710. Publication Type: Journal Article; research. Journal Subset: Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Dental Care. NLM UID: 0376364. KW - Dental Restoration, Permanent KW - Bacterial Colonization KW - Dental Scaling KW - Dental Plaque KW - Human KW - Dental Prophylaxis KW - Microscopy, Electron, Scanning KW - Repeated Measures KW - Post Hoc Analysis KW - Analysis of Variance SP - 1265 EP - 1270 JO - Journal of Prosthetic Dentistry JF - Journal of Prosthetic Dentistry JA - J PROSTHET DENT VL - 112 IS - 5 CY - New York, New York PB - Elsevier Science AB - Statement of problem Bacterial plaque must be routinely removed from teeth, adjacent structures, and prostheses. However, the removal of this plaque can inadvertently increase the risk of future bacterial adhesion. Purpose The purpose of this investigation was to assess the change in the surface roughness of 3 different surfaces after dental prophylactic instrumentation and how this influenced bacterial adhesion. Material and methods Forty specimens each of Type III gold alloy, lithium disilicate, and zirconia were fabricated in the same dimensions. The specimens were divided into 4 groups: ultrasonic scaler, stainless steel curette, prophylaxis cup, and control. Pretreatment surface roughness measurements were made with a profilometer. Surface treatments in each group were performed with a custom mechanical scaler. Posttreatment surface roughness values were measured. In turn, the specimens were inoculated with Streptococcus mutans , Lactobacillus acidophilus , and Actinomyces viscosus . Bacterial adhesion was assessed by rinsing the specimens with sterile saline to remove unattached cells. The specimens were then placed in sterile tubes with 1 mL of sterile saline. The solution was plated and quantified. Scanning electron microscopy was performed. The statistical analysis of surface roughness was completed by using repeated-measures single-factor ANOVA with a Bonferroni correction. Results The surface roughness values for gold alloy specimens increased as a result of prophylaxis cup treatment (0.221 to 0.346 Ra) ( P <.01) and stainless steel curette treatment (0.264 to 1.835 Ra) ( P <.01). The results for bacterial adhesion to gold alloy proved inconclusive. A quantitative comparison indicated no statistically significant differences in pretreatment and posttreatment surface roughness values for lithium disilicate and zirconia specimens. In spite of these similarities, the overall bacterial adherence values for lithium disilicate were significantly greater than those recorded for gold alloy or zirconia ( P <.05). Instrumentation of the lithium disilicate and zirconia with the stainless steel curette significantly increased bacterial adhesion compared with the control ( P <.05). Conclusions The results of this investigation indicate that Type III gold alloy exhibited increased surface roughness values after stainless steel curette and prophylaxis cup treatments. Zirconia was less susceptible to bacterial adhesion than lithium disilicate, and greater bacterial adhesion was found for the stainless steel curette than the other instrumentation methods. SN - 0022-3913 AD - Resident, United States Air Force, Lackland Air Force Base, Joint Base San Antonio, San Antonio, Texas AD - Assistant Professor, Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, Texas AD - Assistant Professor, Department of Prosthodontics, Dental School, Gazi University, Ankara, Turkey DO - 10.1016/j.prosdent.2014.04.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=103910388&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Ferguson, Dale C. AU - Murray-Krczai, Jeremy AU - Barton, David A. AU - Dennison, J. R. AU - Gregory, Stephen A. T1 - Feasibility of Detecting Spacecraft Charging and Arcing by Remote Sensing. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2014/11//Nov/Dec2014 VL - 51 IS - 6 M3 - Article SP - 1907 EP - 1913 SN - 00224650 AB - More than 50 years after the dawn of the space age, most spacecraft still do not have sensors onboard capable of detecting whether they are at potentials likely to put them at risk of severe charging and the concomitant arcing, or, indeed, even capable of detecting when or if they undergo arcing. As a result, anomaly resolution has often been hit or miss, and false diagnoses arc probably common. In this paper, a few remote sensing techniques that could be applied for remotely detecting spacecraft charging and/or arcing, and their feasibility, are examined: surface glows from high-energy electron impact, x-rays from bremsstrahlung, and radio and optical emission from arcs and after arcing. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles -- Electrostatic charging KW - REMOTE sensing KW - CIRCUIT-breaking arcs KW - ASTRONAUTICS & civilization KW - ARTIFICIAL satellites in remote sensing N1 - Accession Number: 100203351; Ferguson, Dale C. 1; Email Address: dale.ferguson.l@us.af.mi Murray-Krczai, Jeremy 1 Barton, David A. 1 Dennison, J. R. 2 Gregory, Stephen A. 3; Affiliation: 1: Space Vehicles Directorate, U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117 2: Utah State University, Logan, Utah 84322 3: Boeing LTS Inc., Kirtland Air Force Base, New Mexico 87117; Source Info: Nov/Dec2014, Vol. 51 Issue 6, p1907; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: REMOTE sensing; Subject Term: CIRCUIT-breaking arcs; Subject Term: ASTRONAUTICS & civilization; Subject Term: ARTIFICIAL satellites in remote sensing; Number of Pages: 7p; Document Type: Article L3 - 10.2514/1.A32958 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100203351&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shriver, Patrick AU - Gay, Shawn AU - Gustafson, Tim AU - Cogburn, Chad AU - Davis, Joel AU - Montoya, Jeremiah AU - Bump, Stephen T1 - Probabilistic Risk Analysis Methodology on Inadvertent Laser Illumination of Satellite Optical Systems. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2014/11//Nov/Dec2014 VL - 51 IS - 6 M3 - Article SP - 1994 EP - 2007 SN - 00224650 AB - As the numbers and applications of laser systems grow worldwide, the potential risks to satellite optical systems from inadvertent ground-based laser operations are a growing cause for concern. Although the hazards from United States Department of Defense laser program operations are mitigated with a formal predictive avoidance process, all satellite owners and operators are implicitly accepting risks from other domestic and foreign lasers. Yet, these risks are generally not well known in space communities. To better understand these risks, a probabilistic risk analysis methodology has been developed to quantify the risks posed to all or a select group of satellite optical payloads by a single laser or classes of laser systems. The methodology uses a Monte Carlo approach to account for factors relating to the chance that a satellite can be illuminated, the probability the optical sensor is "looking" at the laser, the uncertainties related to atmospheric effects on the beam, and the probability of exceeding the damage-onset threshold for a single pixel of a given detector material. A Poisson process models the risk as a function of the number of laser operations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - ARTIFICIAL satellites KW - PAYLOADS (Aerospace engineering) KW - OPTICAL sensors KW - UNITED States. Dept. of Defense N1 - Accession Number: 100203359; Shriver, Patrick 1 Gay, Shawn 1 Gustafson, Tim 1 Cogburn, Chad 1 Davis, Joel 2 Montoya, Jeremiah 2 Bump, Stephen 3; Affiliation: 1: Metatech Corporation, Albuquerque, New Mexico 87106 2: Ball Aerospace and Technologies Corporation, Albuquerque, New Mexico 87106 3: U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117; Source Info: Nov/Dec2014, Vol. 51 Issue 6, p1994; Subject Term: LASERS; Subject Term: ARTIFICIAL satellites; Subject Term: PAYLOADS (Aerospace engineering); Subject Term: OPTICAL sensors; Company/Entity: UNITED States. Dept. of Defense; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 14p; Document Type: Article L3 - 10.2514/1.A32852 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100203359&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dodson, Jacob C. AU - Inman, Daniel J. T1 - Investigating the thermally induced acoustoelastic effect in isotropic media with Lamb waves. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2014/11// VL - 136 IS - 5 M3 - Article SP - 2532 EP - 2543 SN - 00014966 AB - Elastic wave velocities in metallic structures are affected by variations in environmental conditions such as changing temperature. This paper extends the theory of acoustoelasticity by allowing thermally induced strains in unconstrained isotropic media, and it experimentally examines the velocity variation of Lamb waves in aluminum plates (AL-6061) due to isothermal temperature deviations. This paper presents both thermally induced acoustoelastic constants and thermally varying effective Young's modulus and Poisson's ratio which include the third order elastic material constants. The experimental thermal sensitivity of the phase velocity ∂vP/∂vθ) for both the symmetric and antisymmetric modes are bounded by two theories, the acoustoelastic Lamb wave theory with thermo-acoustoelastic tensors and the thermoelastic Lamb wave theory using an effective thermo-acoustoelastic moduli. This paper shows the theoretical thermally induced acoustoelastic Lamb wave thermal sensitivity (∂vP/∂vθ) is an upper bound approximation of the experimental thermal changes, but the acoustoelastic Lamb wave theory is not valid for predicting the antisymmetric (A0) phase velocity at low frequency-thickness values, <1.55MHz mm for various temperatures. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAMB waves KW - RESEARCH KW - ACOUSTOELASTICITY KW - ALUMINUM plates KW - YOUNG'S modulus KW - METALS -- Research N1 - Accession Number: 99265150; Dodson, Jacob C. 1; Email Address: jacob.dodson.2@us.af.mil Inman, Daniel J. 2; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Fuzes Branch, Eglin Air Force Base, Florida 32542 2: Aerospace Engineering Department, University of Michigan, Ann Arbor, Michigan 48109; Source Info: Nov2014, Vol. 136 Issue 5, p2532; Subject Term: LAMB waves; Subject Term: RESEARCH; Subject Term: ACOUSTOELASTICITY; Subject Term: ALUMINUM plates; Subject Term: YOUNG'S modulus; Subject Term: METALS -- Research; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331315 Aluminum Sheet, Plate, and Foil Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1121/1.4897310 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99265150&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Yi AU - Qian, Jing AU - Song, Hongjun AU - Pant, Kapil AU - Yang, HQ AU - Li, Xiang AU - Grismer, Matthew AU - Camberos, José AU - Fahroo, Fariba T1 - Feature extraction from massive, dynamic computational data based on proper orthogonal decomposition and feature mining. JO - Journal of Visualization JF - Journal of Visualization Y1 - 2014/11// VL - 17 IS - 4 M3 - Article SP - 363 EP - 372 SN - 13438875 AB - Proper orthogonal decomposition (POD) has been widely used to extract dominant modes and structures from massive dynamic computational data to improve the understanding and discovery of the phenomena as well as to guide experimental design and control. This paper presents a framework and data mining technique that directly identifies the region of interest (ROI) from the POD modes and determines relevant feature for targeted visualization and learning. Two key elements in the procedure are described, including (1) POD to reduce data dimensions and to decouple the time-averaged and time-varying flow structures in high-fidelity Computational Fluid Dynamics (CFD) data with non-uniform grids, and (2) feature mining, including clustering-based data mining and filtering to detect both mean and unsteady flow features in the ROI. The rationale and benefits of our POD-compatible feature detection for fast scalable feature extraction are discussed. Case studies of vortex extraction are undertaken to validate the present approach. The POD accurately captures the characteristic flow structures and provides useful insight into the underlying flow phenomena. The feature mining module is capable of identifying key features in the ROI (3-10 % of the original data) for focused visualization, discovery, and learning. Graphical Abstract: [Figure not available: see fulltext.] [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Visualization is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Data mining KW - Flow feature KW - Massive data KW - Proper orthogonal decomposition N1 - Accession Number: 98949883; Wang, Yi 1; Email Address: yxw@cfdrc.com Qian, Jing 1 Song, Hongjun 1 Pant, Kapil 1 Yang, HQ 1 Li, Xiang 2 Grismer, Matthew 3 Camberos, José 3 Fahroo, Fariba 4; Affiliation: 1: CFD Research Corporation, 701 McMillian Way NW Huntsville 35806 USA 2: Information Technology and Systems Center, University of Alabama in Huntsville, Huntsville 35899 USA 3: Design and Analysis Branch, Air Force Research Laboratory, 2210 Eighth Street Wright-Patterson Air Force Base 4543 USA 4: Air Force Office of Scientific Research, 875 North Randolph Street Arlington 22203 USA; Source Info: Nov2014, Vol. 17 Issue 4, p363; Author-Supplied Keyword: Data mining; Author-Supplied Keyword: Flow feature; Author-Supplied Keyword: Massive data; Author-Supplied Keyword: Proper orthogonal decomposition; Number of Pages: 10p; Document Type: Article L3 - 10.1007/s12650-014-0214-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98949883&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maurer, Elizabeth I. AU - Sharma, Monita AU - Schlager, John J. AU - Hussain, Saber M. T1 - Systematic analysis of silver nanoparticle ionic dissolution by tangential flow filtration: toxicological implications. JO - Nanotoxicology JF - Nanotoxicology Y1 - 2014/11// VL - 8 IS - 7 M3 - Article SP - 718 EP - 727 SN - 17435390 AB - In the field of toxicology of nanomaterials, scientists have not clearly determined if the observed toxicological events are due to the nanoparticles (NPs) themselves or the dissolution of ions released into the biophysiological environment or both phenomenon participate in combination based upon their bioregional and temporal occurrence during exposure conditions. Consequently, research involving the toxicological analysis of silver NPs (Ag-NPs) has shifted towards assessment of 'nanosized' silver in comparison to its solvated 'ionic' counterpart. Current literature suggests that dissolution of ions from Ag-NPs may play a key role in toxicity; however, the present assessment methodology to separate ions from NPs still requires improvement before a definitive cause of toxicity can be determined. Recently, centrifugation-based techniques have been employed to obtain solvated ions from the NP solution, but this approach leads to NP agglomeration, making further toxicological analysis difficult to assess. Additionally, extremely small NPs are retained in the supernatant even after ultracentrifugation, leading to incomplete separation of ions from their respective NPs. To address these complex toxicology issues we applied enhanced separation techniques with the aim to study levels of ions originating from the Ag-NP using separation by a recirculating tangential flow filtration system. This system uses a unique diffusion-driven filtration method that retains large particles within the continuous flow path, while allowing the solution (ions) to pass through molecular filters by lateral diffusion separation. Use of this technique provides reproducible NP separation from their solvated ions which permits for further quantification using an inductively coupled plasma mass spectrometry or comparison use in bioassay exposures to biological systems. In this study, we thoroughly characterised NPs in biologically relevant solutions to understand the dissolution of Ag-NPs (10 and 50 nm) over time. Our results suggest that the ion dissolution from Ag-NPs is dependent on parameters such as exposure time, chemical composition and temperature of the exposure solution. Further, the well-characterised separated ionic and NP solutions were exposed to a lung epithelial cell line (A549) to evaluate the toxicity of each fraction. Results suggest that although Ag-NPs (unseparated) show concentration-dependent toxicity, dissolution of ions appears to exacerbate the toxicological effect. This finding adds data to the set of probable toxic exposure mechanisms elicited by metallic nanomaterials and provides important consideration when assessing findings of key cell function modulation. [ABSTRACT FROM AUTHOR] AB - Copyright of Nanotoxicology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLUTION (Chemistry) KW - CENTRIFUGATION KW - EPITHELIAL cells KW - CELL culture KW - CELL lines KW - Ag-NP dissolution KW - lung epithelial cell, tangential filtration KW - silver ions KW - silver nanoparticles N1 - Accession Number: 92867573; Maurer, Elizabeth I. 1 Sharma, Monita 1 Schlager, John J. 1 Hussain, Saber M. 1; Affiliation: 1: 711 Human Performance Wing/RHDJ, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio, USA; Source Info: Nov2014, Vol. 8 Issue 7, p718; Subject Term: SOLUTION (Chemistry); Subject Term: CENTRIFUGATION; Subject Term: EPITHELIAL cells; Subject Term: CELL culture; Subject Term: CELL lines; Author-Supplied Keyword: Ag-NP dissolution; Author-Supplied Keyword: lung epithelial cell, tangential filtration; Author-Supplied Keyword: silver ions; Author-Supplied Keyword: silver nanoparticles; Number of Pages: 10p; Document Type: Article L3 - 10.3109/17435390.2013.824127 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92867573&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - SCIABICA, JOE T1 - Battle Ready, Built Right: Air Force Seeks Partnerships to Develop Reliable and Sustainable Energy Sources. JO - Power Engineering JF - Power Engineering Y1 - 2014/11// VL - 118 IS - 11 M3 - Article SP - 140 EP - 149 PB - PennWell Corporation SN - 00325961 AB - The article discusses the search of the U.S. Air Force to seek partnerships to come up with sustainable and reliable sources of energy. Topics covered include the aim of the Air Force to convert wind energy into electricity and implement a power massive groundwater cleanup. Also mentioned is the importance of energy to the training and other operations of the Air Force. KW - SUSTAINABILITY KW - POWER resources KW - ELECTRICITY KW - WIND power KW - UNITED States. Air Force N1 - Accession Number: 99717375; SCIABICA, JOE 1; Affiliation: 1: AIR FORCE CIVIL ENGINEER CENTER; Source Info: Nov2014, Vol. 118 Issue 11, p140; Subject Term: SUSTAINABILITY; Subject Term: POWER resources; Subject Term: ELECTRICITY; Subject Term: WIND power; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; NAICS/Industry Codes: 221115 Wind Electric Power Generation; NAICS/Industry Codes: 221119 Other electric power generation; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99717375&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Feister, S. AU - Nees, J. A. AU - Morrison, J. T. AU - Frische, K. D. AU - Orban, C. AU - Chowdhury, E. A. AU - Roquemore, W. M. T1 - A novel femtosecond-gated, high-resolution, frequency-shifted shearing interferometry technique for probing pre-plasma expansion in ultra-intense laser experiments. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2014/11// VL - 85 IS - 11 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00346748 AB - Ultra-intense laser-matter interaction experiments (>1018 W/cm²) with dense targets are highly sensitive to the effect of laser "noise" (in the form of pre-pulses) preceding the main ultra-intense pulse. These system-dependent pre-pulses in the nanosecond and/or picosecond regimes are often intense enough to modify the target significantly by ionizing and forming a plasma layer in front of the target before the arrival of the main pulse. Time resolved interferometry offers a robust way to characterize the expanding plasma during this period. We have developed a novel pump-probe interferometry system for an ultra-intense laser experiment that uses two short-pulse amplifiers synchronized by one ultra-fast seed oscillator to achieve 40-fs time resolution over hundreds of nanoseconds, using a variable delay line and other techniques. The first of these amplifiers acts as the pump and delivers maximal energy to the interaction region. The second amplifier is frequency shifted and then frequency doubled to generate the femtosecond probe pulse. After passing through the laser-target interaction region, the probe pulse is split and recombined in a laterally sheared Michelson interferometer. Importantly, the frequency shift in the probe allows strong plasma self-emission at the second harmonic of the pump to be filtered out, allowing plasma expansion near the critical surface and elsewhere to be clearly visible in the interferograms. To aid in the reconstruction of phase dependent imagery from fringe shifts, three separate 120° phase-shifted (temporally sheared) interferograms are acquired for each probe delay. Three-phase reconstructions of the electron densities are then inferred by Abel inversion. This interferometric system delivers precise measurements of pre-plasma expansion that can identify the condition of the target at the moment that the ultra-intense pulse arrives. Such measurements are indispensable for correlating laser pre-pulse measurements with instantaneous plasma profiles and for enabling realistic Particle-in-Cell simulations of the ultra-intense laser-matter interaction. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER beams -- Research KW - INTERFEROMETERS KW - RESEARCH KW - SIMULATION methods & models KW - ELECTRONIC amplifiers KW - PLASMA (Ionized gases) -- Research N1 - Accession Number: 99683117; Feister, S. 1,2; Email Address: feister.7@osu.edu Nees, J. A. 2,3 Morrison, J. T. 4 Frische, K. D. 2 Orban, C. 1,2 Chowdhury, E. A. 5 Roquemore, W. M. 6; Affiliation: 1: Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA 2: Innovative Scientific Solutions, Inc., Dayton, Ohio 45459, USA 3: Center for Ultra-Fast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA 4: Fellow, National Research Council, Washington, D.C. 20001, USA 5: Intense Energy Solutions, LLC., Plain City, Ohio 43064, USA 6: Air Force Research Laboratory, Dayton, Ohio 45433, USA; Source Info: 2014, Vol. 85 Issue 11, p1; Subject Term: LASER beams -- Research; Subject Term: INTERFEROMETERS; Subject Term: RESEARCH; Subject Term: SIMULATION methods & models; Subject Term: ELECTRONIC amplifiers; Subject Term: PLASMA (Ionized gases) -- Research; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; Number of Pages: 4p; Illustrations: 2 Color Photographs, 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1063/1.4886955 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99683117&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - BAYRAKTAROĞLU, Burhan AU - LEEDY, Kevin T1 - Self-assembled nanocrystalline ZnO thin film transistor performance optimization for high speed applications. JO - Turkish Journal of Physics JF - Turkish Journal of Physics Y1 - 2014/11// VL - 38 IS - 3 M3 - Article SP - 375 EP - 390 PB - Scientific and Technical Research Council of Turkey SN - 13000101 AB - ZnO nanocrystals grown at relatively low temperatures using various vacuum deposition techniques can yield semiconducting thin films of self-assembled nanocolumns 20-50 nm in diameter. Such films are suitable for the fabrication of high speed and transparent thin film transistors (TFTs). Unlike amorphous TFTs, the performance of ZnO transistors depends both on the crystal quality of nanocrystals and the electrical properties of boundary layers between them. We investigated the use of radio frequency sputtering, atomic layer deposition, and pulsed laser deposition techniques to fabricate self-assembled nanocrystalline thin films and determined the influence of deposition conditions on the performance of transistors. Device design and fabrication parameters were also optimized to demonstrate TFTs with high current density and high speed performance comparable to single crystalline-based transistors. [ABSTRACT FROM AUTHOR] AB - Copyright of Turkish Journal of Physics is the property of Scientific and Technical Research Council of Turkey and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR self-assembly KW - NANOCRYSTALS KW - THIN films KW - ZINC oxide KW - PROCESS optimization KW - THIN film transistors KW - atomic layer deposition KW - nanocolumns KW - nanocrystalline KW - pulsed layer deposition KW - Self-assembly KW - thin film transistors KW - ZnO N1 - Accession Number: 99503945; BAYRAKTAROĞLU, Burhan 1; Email Address: burhan.bayraktaroglu@us.af.mil LEEDY, Kevin 1; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, AFRL/RYDD Wright Patterson AFB, Ohio, USA; Source Info: 2014, Vol. 38 Issue 3, p375; Subject Term: MOLECULAR self-assembly; Subject Term: NANOCRYSTALS; Subject Term: THIN films; Subject Term: ZINC oxide; Subject Term: PROCESS optimization; Subject Term: THIN film transistors; Author-Supplied Keyword: atomic layer deposition; Author-Supplied Keyword: nanocolumns; Author-Supplied Keyword: nanocrystalline; Author-Supplied Keyword: pulsed layer deposition; Author-Supplied Keyword: Self-assembly; Author-Supplied Keyword: thin film transistors; Author-Supplied Keyword: ZnO; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 16p; Illustrations: 1 Color Photograph, 2 Black and White Photographs, 2 Diagrams, 10 Graphs; Document Type: Article L3 - 10.3906/fiz-1404-20 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99503945&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2014-45679-009 AN - 2014-45679-009 AU - Sawyer, Ben D. AU - Finomore, Victor S. AU - Calvo, Andres A. AU - Hancock, P. A. T1 - Google Glass: A driver distraction cause or cure? JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2014/11// VL - 56 IS - 7 SP - 1307 EP - 1321 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Sawyer, Ben D., U Central Florida, 4111 Pictor Lane, Psychology Building, Ste. 320, Orlando, FL, US, 32816 N1 - Accession Number: 2014-45679-009. Partial author list: First Author & Affiliation: Sawyer, Ben D.; U Central Florida, Orlando, FL, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20141110. Correction Date: 20151207. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Distraction; Driving Behavior; Electronic Communication. Minor Descriptor: Drivers; Messages; Multitasking; Driver Distraction. Classification: Transportation (4090). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. Page Count: 15. Issue Publication Date: Nov, 2014. Publication History: Accepted Date: Sep 12, 2014; First Submitted Date: May 9, 2014. Copyright Statement: Human Factors and Ergonomics Society. 2014. AB - Objective: We assess the driving distraction potential of texting with Google Glass (Glass), a mobile wearable platform capable of receiving and sending short-message-service and other messaging formats. Background: A known roadway danger, texting while driving has been targeted by legislation and widely banned. Supporters of Glass claim the head-mounted wearable computer is designed to deliver information without concurrent distraction. Existing literature supports the supposition that design decisions incorporated in Glass might facilitate messaging for drivers. Method: We asked drivers in a simulator to drive and use either Glass or a smartphone-based messaging interface, then interrupted them with an emergency brake event. Both the response event and subsequent recovery were analyzed. Results: Glass-delivered messages served to moderate but did not eliminate distracting cognitive demands. A potential passive cost to drivers merely wearing Glass was also observed. Messaging using either device impaired driving as compared to driving without multitasking. Conclusion: Glass in not a panacea as some supporters claim, but it does point the way to design interventions that effect reduced load in multitasking. Application: Discussions of these identified benefits are framed within the potential of new in-vehicle systems that bring both novel forms of distraction and tools for mitigation into the driver’s seat. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - attention KW - mobile KW - wearable KW - SMS KW - texting KW - 2014 KW - Distraction KW - Driving Behavior KW - Electronic Communication KW - Drivers KW - Messages KW - Multitasking KW - Driver Distraction KW - 2014 DO - 10.1177/0018720814555723 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-45679-009&site=ehost-live&scope=site UR - sawyer@inhumanfactors.com DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Guiru Gu AU - Neda Mojaverian AU - Jarrod Vaillancourt AU - Xuejun Lu T1 - Surface plasmonic resonance induced near-field vectors and their contribution to quantum dot infrared photodetector enhancement. JO - Journal of Physics: D Applied Physics JF - Journal of Physics: D Applied Physics Y1 - 2014/10/29/ VL - 47 IS - 43 M3 - Article SP - 1 EP - 1 SN - 00223727 AB - In this paper, we analyse surface plasmonic resonance (SPR) induced near-field electric-field vector distribution in the quantum dot (QD) region and determine their roles in quantum dot infrared photodetector (QDIP) enhancement. SPR can be excited in metallic two-dimensional subwavelength hole arrays (2DSHAs) when illuminated at resonant wavelengths. The SPR induced near-field vectors (Ez, Ex and Ey) and their distributions and overlaps with the QD active region are simulated. A long-wave infrared (LWIR) QDIP is fabricated with the 2DSHA plasmonic structure to experimentally measure the SPR enhancement spectrum and compare it with the near-field vector components and their distribution in QDs. We found that QDIP enhancement is closely related to the near-field intensity overlap integral in the QD region. The large near-field overlap integral corresponds to high QDIP enhancement. Such near-field overlap integral dependent plasmonic enhancement is attributed to the interaction of and the electric-dipole interaction in QDs. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: D Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE plasmon resonance KW - QUANTUM dots KW - INFRARED radiation KW - PHOTODETECTORS KW - DIPOLE moments N1 - Accession Number: 98752151; Guiru Gu 1 Neda Mojaverian 1,2 Jarrod Vaillancourt 3 Xuejun Lu 1; Email Address: xuejun_lu@uml.edu; Affiliation: 1: Department of Electrical and Computer Engineering, University of Massachusetts Lowell, One University Avenue, Lowell, MA 01854, USA 2: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH 45433, USA 3: Applied NanoFemto Technologies, LLC, 181 Stedman St. #2, Lowell, MA 01851, USA; Source Info: 10/29/2014, Vol. 47 Issue 43, p1; Subject Term: SURFACE plasmon resonance; Subject Term: QUANTUM dots; Subject Term: INFRARED radiation; Subject Term: PHOTODETECTORS; Subject Term: DIPOLE moments; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0022-3727/47/43/435106 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98752151&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bhatia, Ankush AU - Roy, Subrata AU - Gosse, Ryan T1 - Effect of dielectric barrier discharge plasma actuators on non-equilibrium hypersonic flows. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2014/10/28/ VL - 116 IS - 16 M3 - Article SP - 164904-1 EP - 164904-16 PB - American Institute of Physics SN - 00218979 AB - A numerical study employing discontinuous Galerkin method demonstrating net surface heat reduction for a cylindrical body in Mach 17 hypersonic flow is presented. This application focuses on using sinusoidal dielectric barrier discharge plasma actuators to inject momentum near the stagnation point. A 5 species finite rate air chemistry model completes the picture by analyzing the effect of the actuator on the flow chemistry. With low velocity near the stagnation point, the plasma actuator sufficiently modifies the fluid momentum. This results in redistribution of the integrated surface heating load on the body. Specifically, a particular configuration of normally pinching plasma actuation is predicted to reduce the surface heat flux at the stagnation point. An average reduction of 0.246% for the integrated and a maximum reduction of 7.68% are reported for the surface heat flux. The temperature contours in the fluid flow (with maximum temperature over 12 000 K) are pinched away from the stagnation point, thus resulting in reduced thermal load. Plasma actuation in this configuration also affects the species concentration distribution near the wall, in addition to the temperature gradient. The combined effect of both, thus results in an average reduction of 0.0986% and a maximum reduction of 4.04% for nonequilibrium calculations. Thus, this study successfully demonstrates the impact of sinusoidal dielectric barrier discharge plasma actuation on the reduction of thermal load on a hypersonic body. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACTUATORS KW - DIELECTRIC devices KW - HYPERSONIC flow KW - EQUILIBRIUM KW - TEMPERATURE N1 - Accession Number: 99211276; Bhatia, Ankush 1 Roy, Subrata 1 Gosse, Ryan 2; Affiliation: 1: Applied Physics Research Group, Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville 32611, USA 2: Computational Sciences Center of Excellence, Air Force Research Laboratory, AFRL/RQHV, Bldg 146B, 2210 Eighth St., WPAFB, Ohio 45433-7512, USA; Source Info: 2014, Vol. 116 Issue 16, p164904-1; Subject Term: ACTUATORS; Subject Term: DIELECTRIC devices; Subject Term: HYPERSONIC flow; Subject Term: EQUILIBRIUM; Subject Term: TEMPERATURE; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 16p; Illustrations: 6 Diagrams, 1 Chart, 19 Graphs; Document Type: Article L3 - 10.1063/1.4898862 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99211276&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Castro-Palacio, Juan Carlos AU - Nagy, Tibor AU - Bemish, Raymond J. AU - Meuwly, Markus T1 - Computational study of collisions between O(³P) and NO(2Π) at temperatures relevant to the hypersonic flight regime. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2014/10/28/ VL - 141 IS - 16 M3 - Article SP - 1 EP - 11 PB - American Institute of Physics SN - 00219606 AB - Reactions involving N and O atoms dominate the energetics of the reactive air flow around spacecraft when reentering the atmosphere in the hypersonic flight regime. For this reason, the thermal rate coefficients for reactive processes involving O(³P) and NO(²Π) are relevant over a wide range of temperatures. For this purpose, a potential energy surface (PES) for the ground state of the NO2 molecule is constructed based on high-level ab initio calculations. These ab initio energies are represented using the reproducible kernel Hilbert space method and Legendre polynomials. The global PES of NO2 in the ground state is constructed by smoothly connecting the surfaces of the grids of various channels around the equilibrium NO2 geometry by a distance-dependent weighting function. The rate coefficients were calculated using Monte Carlo integration. The results indicate that at high temperatures only the lowest A-symmetry PES is relevant. At the highest temperatures investigated (20 000 K), the rate coefficient for the "O1O2+N" channel becomes comparable (to within a factor of around three) to the rate coefficient of the oxygen exchange reaction. A state resolved analysis shows that the smaller the vibrational quantum number of NO in the reactants, the higher the relative translational energy required to open it and conversely with higher vibrational quantum number, less translational energy is required. This is in accordance with Polanyi's rules. However, the oxygen exchange channel (NO2+O1) is accessible at any collision energy. Finally, this work introduces an efficient computational protocol for the investigation of three-atom collisions in general. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NITROGEN oxides KW - COLLISIONS (Physics) KW - TEMPERATURE measurements KW - NUCLEAR reactions KW - AIR flow KW - POTENTIAL energy surfaces KW - HILBERT space N1 - Accession Number: 99235351; Castro-Palacio, Juan Carlos 1 Nagy, Tibor 1,2 Bemish, Raymond J. 3 Meuwly, Markus 1; Email Address: m.meuwly@unibas.ch; Affiliation: 1: Department of Chemistry, University of Basel, Klingelbergstrasse 80, CH-4056 Basel, Switzerland 2: Institute of Materials and Environmental Chemistry, MTA Research Centre for Natural Sciences, Budapest, Hungary, Magyar tudósok körútja 2, Budapest, 1117 Hungary 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117, USA; Source Info: 10/28/2014, Vol. 141 Issue 16, p1; Subject Term: NITROGEN oxides; Subject Term: COLLISIONS (Physics); Subject Term: TEMPERATURE measurements; Subject Term: NUCLEAR reactions; Subject Term: AIR flow; Subject Term: POTENTIAL energy surfaces; Subject Term: HILBERT space; Number of Pages: 11p; Illustrations: 1 Diagram, 2 Charts, 9 Graphs; Document Type: Article L3 - 10.1063/1.4897263 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99235351&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cahay, M. AU - Murray, P. T. AU - Back, T. C. AU - Fairchild, S. AU - Boeckl, J. AU - Bulmer, J. AU - Koziol, K. K. K. AU - Gruen, G. AU - Sparkes, M. AU - Orozco, F. AU - O'Neill, W. T1 - Hysteresis during field emission from chemical vapor deposition synthesized carbon nanotube fibers. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/10/27/ VL - 105 IS - 17 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00036951 AB - Hysteresis in the field emission (FE) data of a chemical vapor synthesized carbon nanotube fiber cathode is analyzed in the regime where self-heating effects are negligible. In both the forward and reverse applied field sweeps, various FE modes of operation are identified: including Fowler- Nordheim (FN) tunneling and space-charge limited emission from the fiber tip and FN emission from the fiber sidewall. Hysteresis in the FE data is linked to the difference in the field enhancement factors in the different FE modes of operation in the forward and reverse sweeps and related to changes in the fiber morphology. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanofibers KW - HYSTERESIS loop KW - CARBON nanotubes -- Synthesis KW - FIELD emission KW - CHEMICAL vapor deposition N1 - Accession Number: 99273750; Cahay, M. 1 Murray, P. T. 2,3 Back, T. C. 2,3 Fairchild, S. 4 Boeckl, J. 4 Bulmer, J. 5 Koziol, K. K. K. 5 Gruen, G. 6 Sparkes, M. 7 Orozco, F. 7 O'Neill, W. 7; Affiliation: 1: Spintronics and Vacuum Nanoelectronics Laboratory, University of Cincinnati, Cincinnati, Ohio 45221, USA 2: Research Institute, University of Dayton, Dayton, Ohio 45469-0170, USA 3: Center of Excellence for Thin Film Research and Surface Engineering, University of Dayton, Dayton, Ohio 45469-0170, USA 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433, USA 5: Department of Materials Science, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, United Kingdom 6: TechFlow Scientific, 2155 Louisiana Blvd. NE, Albuquerque New Mexico 87110, USA 7: Institute for Manufacturing, University of Cambridge, 17 Charles Babbage Road, Cambridge, United Kingdom; Source Info: 10/27/2014, Vol. 105 Issue 17, p1; Subject Term: CARBON nanofibers; Subject Term: HYSTERESIS loop; Subject Term: CARBON nanotubes -- Synthesis; Subject Term: FIELD emission; Subject Term: CHEMICAL vapor deposition; Number of Pages: 5p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.4900787 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99273750&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Voevodin, A.A. AU - Muratore, C. AU - Aouadi, S.M. T1 - Hard coatings with high temperature adaptive lubrication and contact thermal management: review. JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2014/10/25/ VL - 257 M3 - Article SP - 247 EP - 265 SN - 02578972 AB - Progress in the design and exploration of hard coatings with high temperature adaptive behavior in tribological contacts is reviewed. When coupled with most recent surface engineering strategies for high temperature contact thermal management, this progress opens a huge opportunity for adaptive coating applications on machine parts, where oils and coolants are commonly used. The adaptive mechanisms discussed here include metal diffusion and formation of lubricant phases at worn surfaces, thermally- and mechanically-induced phase transitions in hexagonal solids, contact surface tribo-chemical evolutions to form phases with low melting point, formation of easy to shear solid oxides, and others. All of these adaptive mechanisms are combined in nanocomposite coatings with synergistic self-adaptation of surface structure and chemistry to lubricate from ambient temperatures to 1000 °C and provide surface chemical and structural reversibility during temperature cycling to maintain low friction coefficients. The review also highlights emerging surface adaptive concepts, where advances with ab initio modeling of intrinsically layered solids point to new compositions for thermally stable, easy to shear ceramic coatings, load- and temperature-adaptive surfaces with arrays of compliant carbon and boron nitride nanotubes as well as low friction two-dimensional structures. Approaches for self-regulation of coating thermal conductivity, heat flow, and thermal spike mitigations are discussed in the context of surface structure evolution and phase transitions. Future progress is linked to the development of in situ exploration techniques, capable of identifying adaptive surface chemistry and structural evolutions in broad temperature regimes. When combined with predictive modeling, such approaches drastically accelerate adaptive coating developments. The review identifies opportunities, strategies, and challenges for designs and applications of hard coatings with high temperature adaptive lubrication and contact thermal management. [ABSTRACT FROM AUTHOR] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE coatings KW - LUBRICATION & lubricants KW - THERMAL management (Electronic packaging) KW - TRIBOLOGY KW - SURFACE structure KW - HIGH temperatures KW - CERAMIC coating KW - Adaptive KW - Hard coating KW - High temperature KW - Solid lubrication KW - Thermal management KW - Tribology N1 - Accession Number: 99063396; Voevodin, A.A. 1; Email Address: andrey.voevodin@us.af.mil Muratore, C. 2 Aouadi, S.M. 3; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 2: Department of Chemical and Materials Engineering, University of Dayton, Dayton, OH 45469, USA 3: Department of Materials Science and Engineering, University of North Texas, Denton, TX 76207, USA; Source Info: Oct2014, Vol. 257, p247; Subject Term: SURFACE coatings; Subject Term: LUBRICATION & lubricants; Subject Term: THERMAL management (Electronic packaging); Subject Term: TRIBOLOGY; Subject Term: SURFACE structure; Subject Term: HIGH temperatures; Subject Term: CERAMIC coating; Author-Supplied Keyword: Adaptive; Author-Supplied Keyword: Hard coating; Author-Supplied Keyword: High temperature; Author-Supplied Keyword: Solid lubrication; Author-Supplied Keyword: Thermal management; Author-Supplied Keyword: Tribology; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 324191 Petroleum Lubricating Oil and Grease Manufacturing; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.surfcoat.2014.04.046 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99063396&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - French, David M. AU - Hoff, Brad W. T1 - Spatially Dispersive Ferrite Nonlinear Transmission Line With Axial Bias. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2014/10/20/Oct2014 Part 3 VL - 42 IS - 10 M3 - Article SP - 3387 EP - 3390 SN - 00933813 AB - A spatially dispersive nonlinear transmission line (NLTL) using axially biased ferrite as the nonlinear medium has been developed. The NLTL is frequency tunable from 0.95 to 1.45 GHz with adjustment of the axial biasing field. A circuit model describing the dispersion of the line has been developed and compared with experimental measurements and time and frequency domain simulations. Instantaneous peak power levels exceeding 100 MW and average power levels of 10s of MW with durations from 4 to 17 ns have been observed. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FERRITES (Magnetic materials) KW - RESEARCH KW - FERRIMAGNETIC materials KW - MICROWAVE generation KW - PULSED power systems KW - ELECTRIC power transmission KW - Dispersion KW - Electric shock KW - Ferrites KW - High power microwave generation KW - nonlinear circuits KW - Power transmission lines KW - pulse power systems KW - Radio frequency KW - Transmission line measurements KW - Voltage measurement N1 - Accession Number: 99059034; French, David M. 1 Hoff, Brad W. 1; Affiliation: 1: , Air Force Research Laboratory, Albuquerque, NM, USA; Source Info: Oct2014 Part 3, Vol. 42 Issue 10, p3387; Subject Term: FERRITES (Magnetic materials); Subject Term: RESEARCH; Subject Term: FERRIMAGNETIC materials; Subject Term: MICROWAVE generation; Subject Term: PULSED power systems; Subject Term: ELECTRIC power transmission; Author-Supplied Keyword: Dispersion; Author-Supplied Keyword: Electric shock; Author-Supplied Keyword: Ferrites; Author-Supplied Keyword: High power microwave generation; Author-Supplied Keyword: nonlinear circuits; Author-Supplied Keyword: Power transmission lines; Author-Supplied Keyword: pulse power systems; Author-Supplied Keyword: Radio frequency; Author-Supplied Keyword: Transmission line measurements; Author-Supplied Keyword: Voltage measurement; NAICS/Industry Codes: 221121 Electric Bulk Power Transmission and Control; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TPS.2014.2348492 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99059034&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Olson, Spencer E. AU - Raithel, Georg AU - Christlieb, Andrew J. T1 - Pressure-driven evaporative cooling in atom guides. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2014/10/15/ VL - 90 IS - 4-B M3 - Article SP - 1 EP - 4 SN - 10502947 AB - We study steady-state evaporation in an atom guide via Monte Carlo simulations. The evaporation surface follows a specific profile as a function of longitudinal guide location. We demonstrate that the choice of evaporation profile significantly impacts the performance of the evaporation. Our simulations also demonstrate a significant performance boost in the evaporation when using a longitudinally compressed guide. We show that for a purely pressure-driven atom beam, it should be possible to reach degeneracy within a 0.5 m guide for experimentally feasible, albeit challenging, loading conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONTINUOUS wave lasers KW - RESEARCH KW - MONTE Carlo method KW - BOSE-Einstein condensation KW - BOLTZMANN factor KW - NAVAL Research Laboratory (U.S.) N1 - Accession Number: 99602699; Olson, Spencer E. 1 Raithel, Georg 2 Christlieb, Andrew J. 3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Ave. SE, Kirtland Air Force Base, New Mexico 87117, USA 2: Physics Department, University of Michigan, 2477 Randall Lab, 450 Church Street, Ann Arbor, Michigan 48109, USA 3: Mathematics Department, Michigan State University, D304 Wells Hall, East Lansing, Michigan 48824, USA; Source Info: Oct2014, Vol. 90 Issue 4-B, p1; Subject Term: CONTINUOUS wave lasers; Subject Term: RESEARCH; Subject Term: MONTE Carlo method; Subject Term: BOSE-Einstein condensation; Subject Term: BOLTZMANN factor; Company/Entity: NAVAL Research Laboratory (U.S.); Number of Pages: 4p; Document Type: Article L3 - 10.1103/PhysRevA.90.043612 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99602699&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yue Wu AU - Zhili Zhang AU - Naibo Jiang AU - Sukesh Roy AU - Gord, James R. T1 - Resonant- and avalanche-ionization amplification of laser-induced plasma in air. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2014/10/14/ VL - 116 IS - 14 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00218979 AB - Amplification of laser-induced plasma in air is demonstrated utilizing resonant laser ionization and avalanche ionization. Molecular oxygen in air is ionized by a low-energy laser pulse employing (2 + 1) resonance-enhanced multi-photon ionization (REMPI) to generate seed electrons. Subsequent avalanche ionization of molecular oxygen and nitrogen significantly amplifies the laser-induced plasma. In this plasma-amplification effect, three-body attachments to molecular oxygen dominate the electron-generation and -loss processes, while either nitrogen or argon acts as the third body with low electron affinity. Contour maps of the electron density within the plasma obtained in O2/ N2 and O2/Ar gas mixtures are provided to show relative degrees of plasma amplification with respect to gas pressure and to verify that the seed electrons generated by O2 2 + 1 REMPI are selectively amplified by avalanche ionization of molecular nitrogen in a relatively low-pressure condition (≤100 Torr). Such plasma amplification occurring in air could be useful in aerospace applications at high altitude [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER plasmas KW - ELECTRON density KW - AMPLIFICATION (Physics) KW - OXYGEN KW - NITROGEN KW - IONIZATION (Atomic physics) N1 - Accession Number: 98937894; Yue Wu 1 Zhili Zhang 1; Email Address: zzhang24@utk.edu Naibo Jiang 2 Sukesh Roy 2 Gord, James R. 3; Affiliation: 1: Department of Mechanical, Aerospace and Biomedical Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA 2: Spectral Energies, LLC, 5100 Springfield St., Suite 301, Dayton, Ohio 45431, USA 3: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: 2014, Vol. 116 Issue 14, p1; Subject Term: LASER plasmas; Subject Term: ELECTRON density; Subject Term: AMPLIFICATION (Physics); Subject Term: OXYGEN; Subject Term: NITROGEN; Subject Term: IONIZATION (Atomic physics); NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 5p; Illustrations: 1 Color Photograph, 6 Graphs; Document Type: Article L3 - 10.1063/1.4896789 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98937894&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Selesnick, R. S. T1 - Optimal performance of charged particle telescopes in space. JO - Nuclear Instruments & Methods in Physics Research Section A JF - Nuclear Instruments & Methods in Physics Research Section A Y1 - 2014/10/11/ VL - 761 M3 - Article SP - 34 EP - 38 SN - 01689002 AB - A Bayesian probabilistic data analysis method for energetic proton and ion data from charged particle telescopes in space is described. The telescope is assumed to consist of only a series of planar silicon detectors with graduated thicknesses. The method is based on a range-straggling function and makes optimal use of energy loss measurements in each detector. It provides accurate incidence angle estimates for particles stopping in the telescope, allowing accurate element identification and possible isotope identification. It also provides energy estimates for high-energy particles going through the telescope without stopping. Examples are shown for simulated telescope design performance tests and application to real space-particle data. [ABSTRACT FROM AUTHOR] AB - Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERFORMANCE evaluation KW - SPACE telescopes KW - PARTICLES (Nuclear physics) KW - BAYESIAN analysis KW - PROBABILITY theory KW - STABLE isotopes KW - Bayesian KW - Charged particle telescope KW - Data analysis N1 - Accession Number: 96928576; Selesnick, R. S. 1; Email Address: richard.selesnick@us.af.mil; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117, USA; Source Info: Oct2014, Vol. 761, p34; Subject Term: PERFORMANCE evaluation; Subject Term: SPACE telescopes; Subject Term: PARTICLES (Nuclear physics); Subject Term: BAYESIAN analysis; Subject Term: PROBABILITY theory; Subject Term: STABLE isotopes; Author-Supplied Keyword: Bayesian; Author-Supplied Keyword: Charged particle telescope; Author-Supplied Keyword: Data analysis; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.nima.2014.05.109 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96928576&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buchanan, Dennis J. AU - John, Reji T1 - Residual stress redistribution in shot peened samples subject to mechanical loading. JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2014/10/06/ VL - 615 M3 - Article SP - 70 EP - 78 SN - 09215093 AB - Shot peening is a well-established surface treatment process that imparts large compressive residual stresses onto the surface and at shallow depths to retard initiation and growth of fatigue cracks. The plastic deformation developed during the surface treatment sets up a constraint that retains compressive stresses on the surface balanced by tensile residual stresses in the interior. However, component service histories that produce subsequent plastic deformation may redistribute these residual stresses. In most engineering components, this additional plastic deformation is localized to stress concentration sites such as holes, notches, and fillets. In the case of gross plastic deformation where the entire cross section experiences material yielding the residual stress profile may redistribute, resulting in tensile stresses on the outside surface balanced by compression in the interior. This paper describes a series of experiments combined with models to explain the redistribution in residual stress depth profiles subject to applied stresses producing gross plastic strains in shot peened laboratory specimens. The initial room temperature residual stress and plastic strain profiles provide initial conditions for predictions. Model predictions correlate well with experimental results on shot peened dogbone specimens subject to single cycle and fatigue loading conditions at elevated temperature. Experiments on shot peened notched specimens do not exhibit the same stress redistribution even for larger applied stresses. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESIDUAL stresses KW - PEENING (Metalwork) KW - SURFACE preparation KW - COMPRESSIVE strength KW - METALS -- Fatigue KW - PLASTICITY KW - Mechanical behavior KW - Nickel-base superalloy KW - Residual stress KW - Shot peen N1 - Accession Number: 98356862; Buchanan, Dennis J. 1; Email Address: dennis.buchanan@udri.udayton.edu John, Reji 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0020, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory (AFRL/RXCM), Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Oct2014, Vol. 615, p70; Subject Term: RESIDUAL stresses; Subject Term: PEENING (Metalwork); Subject Term: SURFACE preparation; Subject Term: COMPRESSIVE strength; Subject Term: METALS -- Fatigue; Subject Term: PLASTICITY; Author-Supplied Keyword: Mechanical behavior; Author-Supplied Keyword: Nickel-base superalloy; Author-Supplied Keyword: Residual stress; Author-Supplied Keyword: Shot peen; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.msea.2014.06.118 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98356862&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wenjing Wang AU - Chatterjee, Mainak AU - Kwiat, Kevin AU - Qing Li T1 - A game theoretic approach to detect and co-exist with malicious nodes in wireless networks. JO - Computer Networks JF - Computer Networks Y1 - 2014/10/04/ VL - 71 M3 - Article SP - 63 EP - 83 SN - 13891286 AB - Identification and isolation of malicious nodes in a distributed system is a challenging problem. This problem is further aggravated in a wireless network because the unreliable channel hides the actions of each node from one another. Therefore, a regular node can only construct a belief about a malicious node through monitoring and observation. In this paper, we use game theory to study the interactions between regular and malicious nodes in a wireless network. We model the malicious node detection process as a Bayesian game with imperfect information and show that a mixed strategy perfect Bayesian Nash Equilibrium (also a sequential equilibrium) is attainable. While the equilibrium in the detection game ensures the identification of the malicious nodes, we argue that it might not be profitable to isolate the malicious nodes upon detection. As a matter of fact, malicious nodes can co-exist with regular nodes as long as the destruction they bring is less than the contribution they make. To show how we can utilize the malicious nodes, a post-detection game between the malicious and regular nodes is formalized. Solution to this game shows the existence of a subgame perfect Nash Equilibrium and reveals the conditions that are necessary to achieve the equilibrium. Further, we show how a malicious node can construct a belief about the belief held by a regular node. By employing the belief about the belief system, a Markov Perfect Bayes-Nash Equilibrium is reached and the equilibrium postpones the detection of the malicious node. Simulation results and their discussions are provided to illustrate the properties of the derived equilibria. The integration of the detection game and the post-detection is also studied and it is shown that the former one can transit into the latter one when the malicious node actively adjusts its strategies. [ABSTRACT FROM AUTHOR] AB - Copyright of Computer Networks is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAME theory KW - MALWARE (Computer software) KW - COMPUTER networks -- Monitoring KW - NASH equilibrium KW - WIRELESS sensor networks KW - CHANNEL capacity (Telecommunications) KW - Bayesian games KW - Coexistence KW - Game theory KW - Malicious node KW - Markov Bayes-Nash Equilibrium N1 - Accession Number: 97401740; Wenjing Wang 1; Email Address: wenjing.wang@bluecoat.com; Chatterjee, Mainak 2; Email Address: mainak@eecs.ucf.edu; Kwiat, Kevin 3; Email Address: kevin.kwiat@rl.af.mil; Qing Li 1; Email Address: qing.li@bluecoat.com; Affiliations: 1: Blue Coat Systems, Inc., Sunnyvale, CA, United States; 2: EECS, University of Central Florida, Orlando, FL, United States; 3: Air Force Research Laboratory, Rome, NY, United States; Issue Info: Oct2014, Vol. 71, p63; Thesaurus Term: GAME theory; Thesaurus Term: MALWARE (Computer software); Thesaurus Term: COMPUTER networks -- Monitoring; Thesaurus Term: NASH equilibrium; Subject Term: WIRELESS sensor networks; Subject Term: CHANNEL capacity (Telecommunications); Author-Supplied Keyword: Bayesian games; Author-Supplied Keyword: Coexistence; Author-Supplied Keyword: Game theory; Author-Supplied Keyword: Malicious node; Author-Supplied Keyword: Markov Bayes-Nash Equilibrium; Number of Pages: 21p; Document Type: Article L3 - 10.1016/j.comnet.2014.06.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=97401740&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - French, David B. AU - Mazzoleni, Andre P. T1 - Modeling tether–ballast asteroid diversion systems, including tether mass and elasticity. JO - Acta Astronautica JF - Acta Astronautica Y1 - 2014/10// VL - 103 M3 - Article SP - 282 EP - 306 SN - 00945765 AB - The risk of an impact between a large asteroid and the Earth has been significant enough to attract the attention of many researchers. This paper focuses on a mitigation technique that involves the use of a long tether and ballast mass to divert an asteroid. When such a tether is modeled as massless and inelastic, results show that the method may be viable for diverting asteroids away from a collision with the Earth; the next step towards demonstrating the viability of the approach is to conduct a study which uses a more realistic tether model. This paper presents such a study, in which the tether models include tether mass and elasticity. These models verify that a tether–ballast system is capable of diverting Earth-threatening asteroids. Detailed parametric studies are presented which illustrate how system performance depends on tether mass and elasticity. Also, case studies are presented which show how more realistic models can aid in the design of tether–ballast asteroid mitigation systems. Key findings include the dangers imposed by periods during which the tether goes slack and ways to preclude this. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Astronautica is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASTEROIDS KW - MASS (Physics) KW - ELASTICITY KW - EARTH (Planet) KW - NEAR-Earth objects KW - Asteroid KW - Diversion KW - Mitigation KW - Near earth object (NEO) KW - Potentially hazardous asteroid (PHA) KW - Tether N1 - Accession Number: 97846988; French, David B. 1; Email Address: french.usaf@gmail.com Mazzoleni, Andre P. 2; Email Address: a_mazzoleni@ncsu.edu; Affiliation: 1: Department of Astronautics, United States Air Force Academy, CO 80921, United States 2: Mechanical and Aerospace Engineering, North Carolina State University, Associate Fellow of AIAA, Raleigh, NC 27695, United States; Source Info: Oct2014, Vol. 103, p282; Subject Term: ASTEROIDS; Subject Term: MASS (Physics); Subject Term: ELASTICITY; Subject Term: EARTH (Planet); Subject Term: NEAR-Earth objects; Author-Supplied Keyword: Asteroid; Author-Supplied Keyword: Diversion; Author-Supplied Keyword: Mitigation; Author-Supplied Keyword: Near earth object (NEO); Author-Supplied Keyword: Potentially hazardous asteroid (PHA); Author-Supplied Keyword: Tether; Number of Pages: 25p; Document Type: Article L3 - 10.1016/j.actaastro.2014.04.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97846988&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schmit, Ryan F. AU - Grove, James E. AU - Semmelmayer, Frank AU - Haverkamp, Mitchell T1 - Nonlinear Feedback Mechanisms Inside a Rectangular Cavity. JO - AIAA Journal JF - AIAA Journal Y1 - 2014/10// VL - 52 IS - 10 M3 - Article SP - 2127 EP - 2142 SN - 00011452 AB - An examination of a rectangular cavity with a length-to-depth ratio of 5.67 was tested at Mach 0.7 and 1.5 with corresponding Reynolds numbers of 6.49 x 106 and 7.35 x 106/m, respectively. High-speed shadowgraph movies were simultaneously sampled with dynamic pressure sensors at 75 kHz. From the high-speed shadowgraph movies, observations of the cavity flowfield indicate that linear models like Rossiter's equation and Helmholtz resonance may be too simplistic to correctly model rectangular cavity flow physics. Some of the observations are as follows. In the cavity's shear layer, large-scale vortices have been found to be nonperiodic. The shear-layer convection velocity was determined to be 0.6U∞ at both Mach numbers, which is significantly higher than Rossiter's equation predicts for correct peak frequency matching. Shear-layer entrainment of freestream flow starts and feeds the acoustic cycle inside the cavity. There are more acoustic wave in the cavity at any one time than has been considered before, which produce the discrete acoustic tones throughout the frequency spectrum. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CAVITIES (Airplanes) KW - RESEARCH KW - COMPUTATIONAL fluid dynamics KW - MACH number KW - REYNOLDS number KW - AERONAUTICS -- Research N1 - Accession Number: 98723883; Schmit, Ryan F. 1,2 Grove, James E. 1,3 Semmelmayer, Frank 1,4 Haverkamp, Mitchell 1,4; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Aerospace Engineer, Aerospace Systems Directorate, Aerospace Vehicles Division, Integrated Systems Branch (RQVI), 2130 8th Street, Associate Fellow AIAA 3: Weapons Integration Team Lead, Aerospace Systems Directorate, Aerospace Vehicles Division, Integrated Systems Branch (RQVI), 2310 8th Street 4: Test Engineer, Aerospace Systems Directorate, Aerospace Vehicles Division, Aero Validation Branch (RQVX), 2130 8th Street; Source Info: Oct2014, Vol. 52 Issue 10, p2127; Subject Term: CAVITIES (Airplanes); Subject Term: RESEARCH; Subject Term: COMPUTATIONAL fluid dynamics; Subject Term: MACH number; Subject Term: REYNOLDS number; Subject Term: AERONAUTICS -- Research; Number of Pages: 16p; Document Type: Article L3 - 10.2514/1.J052804 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98723883&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Padmanabhan, Madhusudan A. AU - Pasiliao, Crystal L. AU - Dowell, Earl H. T1 - Simulation of Aeroelastic Limit-Cycle Oscillations of Aircraft Wings with Stores. JO - AIAA Journal JF - AIAA Journal Y1 - 2014/10// VL - 52 IS - 10 M3 - Article SP - 2291 EP - 2299 SN - 00011452 AB - Aircraft wings carrying stores are susceptible to nonlinear aeroelastic limit-cycle oscillations, which can lead to reduced flight and mission performance. Limit-cycle-oscillation dynamics and control simulation studies, although of great importance, are often based on simplified typical-section airfoil models. In this work, the more accurate beam-rod representation is used to capture the spanwise varying displacement of a wing with store. The spanwise variation of wing geometry and structural properties, as well as the presence of multiple stores on rigid or flexible mounts, is efficiently modeled by the primitive-modes approach. Aeroelastic limit-cycle oscillation due to structural nonlinearity is demonstrated via time-marching simulations, as well as the computationally more efficient harmonic-balance method. Some novel forms of limit-cycle-oscillation behavior are observed as the model parameters are varied, and these are explained in terms of the flutter/divergence properties of the base linear aeroelastic system. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - RESEARCH KW - AEROELASTICITY KW - LIMIT cycles KW - FLIGHT KW - AERONAUTICS -- Research N1 - Accession Number: 98723896; Padmanabhan, Madhusudan A. 1 Pasiliao, Crystal L. 2 Dowell, Earl H. 1; Affiliation: 1: Duke University, Durham, North Carolina 27708 2: U.S. Air Force Research Laboratory, Eglin Air Force Base, Florida 32542; Source Info: Oct2014, Vol. 52 Issue 10, p2291; Subject Term: AIRPLANE wings; Subject Term: RESEARCH; Subject Term: AEROELASTICITY; Subject Term: LIMIT cycles; Subject Term: FLIGHT; Subject Term: AERONAUTICS -- Research; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.2514/1.J052843 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98723896&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cao, Yongcan AU - Ren, Wei T1 - Finite-time consensus for multi-agent networks with unknown inherent nonlinear dynamics. JO - Automatica JF - Automatica Y1 - 2014/10// VL - 50 IS - 10 M3 - Article SP - 2648 EP - 2656 SN - 00051098 AB - The objective of this paper is to analyze the finite-time convergence of a nonlinear but continuous consensus algorithm for multi-agent networks with unknown inherent nonlinear dynamics. Due to the existence of the unknown inherent nonlinear dynamics, the stability analysis and the finite-time convergence analysis are more challenging than those under the well-studied consensus algorithms for known linear systems. For this purpose, we propose a novel comparison based tool. By using this tool, it is shown that the proposed nonlinear consensus algorithm can guarantee finite-time convergence if the directed switching interaction graph has a directed spanning tree at each time interval. Specifically, the finite-time convergence is shown by comparing the closed-loop system under the proposed consensus algorithm with some well-designed closed-loop system whose stability properties are easier to obtain. Moreover, the stability and the finite-time convergence of the closed-loop system using the proposed consensus algorithm under a (general) directed switching interaction graph can even be guaranteed by the stability and the finite-time convergence of some well-designed nonlinear closed-loop system under some special directed switching interaction graph. This provides a stimulating example for the potential applications of the proposed comparison based tool in the stability analysis of linear/nonlinear closed-loop systems by making use of known results in linear/nonlinear systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Automatica is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIAGENT systems KW - COMPUTER networks KW - NONLINEAR dynamical systems KW - STOCHASTIC convergence KW - COOPERATIVE control systems KW - Consensus KW - Cooperative control KW - Finite-time convergence KW - Multi-agent systems KW - Nonlinear dynamics N1 - Accession Number: 98852748; Cao, Yongcan 1; Email Address: yongcan.cao.ctr.cn@us.af.mil Ren, Wei 2; Email Address: ren@ee.ucr.edu; Affiliation: 1: Control Science Center of Excellence, Air Force Research Laboratory, United States 2: Department of Electrical Engineering, University of California, Riverside, United States; Source Info: Oct2014, Vol. 50 Issue 10, p2648; Subject Term: MULTIAGENT systems; Subject Term: COMPUTER networks; Subject Term: NONLINEAR dynamical systems; Subject Term: STOCHASTIC convergence; Subject Term: COOPERATIVE control systems; Author-Supplied Keyword: Consensus; Author-Supplied Keyword: Cooperative control; Author-Supplied Keyword: Finite-time convergence; Author-Supplied Keyword: Multi-agent systems; Author-Supplied Keyword: Nonlinear dynamics; NAICS/Industry Codes: 541512 Computer Systems Design Services; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.automatica.2014.08.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98852748&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Veremyev, Alexander AU - Tsyurmasto, Peter AU - Uryasev, Stan AU - Rockafellar, R. Tyrrell AD - U FL and National Research Council-Air Force Research Laboratory, Eglin, FL AD - U FL AD - U FL AD - U WA T1 - Calibrating Probability Distributions with Convex-Concave-Convex Functions: Application to CDO Pricing JO - Computational Management Science JF - Computational Management Science Y1 - 2014/10// VL - 11 IS - 4 SP - 341 EP - 364 SN - 1619697X N1 - Accession Number: 1467851; Keywords: Arbitrage; Geographic Descriptors: Selected Countries; Publication Type: Journal Article; Update Code: 201412 N2 - This paper considers a class of functions referred to as convex-concave-convex (CCC) functions to calibrate unimodal or multimodal probability distributions. In discrete case, this class of functions can be expressed by a system of linear constraints and incorporated into an optimization problem. We use CCC functions for calibrating a risk-neutral probability distribution of obligors default intensities (hazard rates) in collateral debt obligations (CDO). The optimal distribution is calculated by maximizing the entropy function with no-arbitrage constraints given by bid and ask prices of CDO tranches. Such distribution reflects the views of market participants on the future market environments. We provide an explanation of why CCC functions may be applicable for capturing a non-data information about the considered distribution. The numerical experiments conducted on market quotes for the iTraxx index with different maturities and starting dates support our ideas and demonstrate that the proposed approach has stable performance. Distribution generalizations with multiple humps and their applications in credit risk are also discussed. KW - Specific Distributions; Specific Statistics C46 KW - Asset Pricing; Trading Volume; Bond Interest Rates G12 KW - Information and Market Efficiency; Event Studies; Insider Trading G14 L3 - http://link.springer.com/journal/volumesAndIssues/10287 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1467851&site=ehost-live&scope=site UR - http://dx.doi.org/10.1007/s10287-013-0176-4 UR - http://link.springer.com/journal/volumesAndIssues/10287 DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Medeiros, Esdras AU - Doraiswamy, Harish AU - Berger, Matthew AU - Silva, Claudio T. T1 - Using physically Based Rendering to Benchmark Structured Light Scanners. JO - Computer Graphics Forum JF - Computer Graphics Forum Y1 - 2014/10// VL - 33 IS - 7 M3 - Article SP - 71 EP - 80 PB - Wiley-Blackwell SN - 01677055 AB - Structured light scanning is ubiquituous in 3D acquisition. It is capable of capturing high geometric detail at a low cost under a variety of challenging scene conditions. Recent methods have demonstrated robustness in the presence of artifacts due to global illumination, such as inter-reflections and sub-surface scattering, as well as imperfections caused by projector defocus. For comparing approaches, however, the quantitative evaluation of structured lighting schemes is hindered by the challenges in obtaining ground truth data, resulting in a poor understanding for these methods across a wide range of shapes, materials, and lighting configurations. In this paper, we present a benchmark to study the performance of structured lighting algorithms in the presence of errors caused due to the above properties of the scene. In order to do this, we construct a synthetic structured lighting scanner that uses advanced physically based rendering techniques to simulate the point cloud acquisition process. We show that, under conditions similar to that of a real scanner, our synthetic scanner replicates the same artifacts found in the output of a real scanner. Using this synthetic scanner, we perform a quantitative evaluation of four different structured lighting techniques - gray-code patterns, micro-phase shifting, ensemble codes, and unstructured light scanning. The evaluation, performed on a variety of scenes, demonstrate that no one method is capable of adequately handling all sources of error - each method is appropriate for addressing distinct sources of error. [ABSTRACT FROM AUTHOR] AB - Copyright of Computer Graphics Forum is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCANNING systems KW - OPTICAL scanners KW - LIGHTING KW - ALGORITHMS KW - SPECTRAL reflectance KW - DIGITAL image processing KW - Categories and Subject Descriptors (according to ACM CCS) KW - I.3.7 [Computer Graphics]: Raytracing- KW - I.4.1 [Digitization and Image Capture]: Reflectance-Scanning N1 - Accession Number: 99086744; Medeiros, Esdras 1 Doraiswamy, Harish 2 Berger, Matthew 3 Silva, Claudio T. 2; Affiliation: 1: Universidade Federal do Ceará, 2: New York University, 3: Air Force Research Laboratory,; Source Info: Oct2014, Vol. 33 Issue 7, p71; Subject Term: SCANNING systems; Subject Term: OPTICAL scanners; Subject Term: LIGHTING; Subject Term: ALGORITHMS; Subject Term: SPECTRAL reflectance; Subject Term: DIGITAL image processing; Author-Supplied Keyword: Categories and Subject Descriptors (according to ACM CCS); Author-Supplied Keyword: I.3.7 [Computer Graphics]: Raytracing-; Author-Supplied Keyword: I.4.1 [Digitization and Image Capture]: Reflectance-Scanning; NAICS/Industry Codes: 335129 Other Lighting Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; Number of Pages: 10p; Illustrations: 1 Color Photograph, 2 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1111/cgf.12475 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99086744&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heard, W. AU - Martin, B. AU - Nie, X. AU - Slawson, T. AU - Basu, P. T1 - Annular Pulse Shaping Technique for Large-Diameter Kolsky Bar Experiments on Concrete. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2014/10// VL - 54 IS - 8 M3 - Article SP - 1343 EP - 1354 SN - 00144851 AB - The goal of this study is to design a novel annular pulse shaping technique for large-diameter Kolsky bars for investigating the dynamic compressive response of concretes. The purpose of implementing an annular pulse shaper design is to alleviate inertia-induced stresses in the pulse shaper material that would otherwise superpose unwanted oscillations on the incident wave. This newly developed pulse shaping technique led to well-controlled testing conditions enabling dynamic stress equilibrium, uniform deformation, and constant strain-rate in the testing of a chosen concrete material. The observed dynamic deformation rate of the concrete is highly consistent (8 % variation) with the stress in the specimen well equilibrated confirming the validity of this new technique. Experimental results at both quasi-static (10 s) and dynamic (100 s, 240 s) strain rates showed that the failure strength of this concrete is rate-sensitive. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONCRETE KW - PULSE shaping (Digital communications) KW - COMPRESSIVE strength KW - STRAINS & stresses (Mechanics) KW - DEFORMATIONS (Mechanics) KW - FAILURE analysis (Engineering) KW - High rate KW - High strength concrete KW - Large kolsky bar KW - Pulse shaper KW - Split-hopkinson pressure bar N1 - Accession Number: 97903695; Heard, W. 1; Email Address: William.F.Heard@usace.army.mil Martin, B. 2; Email Address: bradley.martin@eglin.af.mil Nie, X. 3; Email Address: Xu.Nie@unt.edu Slawson, T. 1 Basu, P. 4; Email Address: p.k.basu@vanderbilt.edu; Affiliation: 1: U.S. Army Engineer Research and Development Center, 39180 Vicksburg USA 2: Air Force Research Laboratory, 32542 Eglin AFB USA 3: Department of Mechanical and Energy Engineering, University of North Texas, 76203 Denton USA 4: Department of Civil and Environmental Engineering, Vanderbilt University Nashville, 37240 Nashville USA; Source Info: Oct2014, Vol. 54 Issue 8, p1343; Subject Term: CONCRETE; Subject Term: PULSE shaping (Digital communications); Subject Term: COMPRESSIVE strength; Subject Term: STRAINS & stresses (Mechanics); Subject Term: DEFORMATIONS (Mechanics); Subject Term: FAILURE analysis (Engineering); Author-Supplied Keyword: High rate; Author-Supplied Keyword: High strength concrete; Author-Supplied Keyword: Large kolsky bar; Author-Supplied Keyword: Pulse shaper; Author-Supplied Keyword: Split-hopkinson pressure bar; NAICS/Industry Codes: 327999 All Other Miscellaneous Nonmetallic Mineral Product Manufacturing; NAICS/Industry Codes: 327320 Ready-Mix Concrete Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1007/s11340-014-9899-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97903695&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wong-Ng, W. AU - Yan, Y. AU - Martin, J. AU - Otani, M. AU - Thomas, E. L. AU - Tang, X. F. AU - Green, M. L. T1 - Development and Applications of Non-destructive Screening Tools for Thermoelectric Materials at NIST. JO - Ferroelectrics JF - Ferroelectrics Y1 - 2014/10// VL - 470 IS - 1 M3 - Article SP - 241 EP - 259 SN - 00150193 AB - The increased research and development of thermoelectric materials for energy conversion applications is driven primarily by the need for improved efficiency in the global utilization of energy resources. To facilitate the search for higher efficiency thermoelectric materials, we have developed a suite of complimentary high-throughput screening systems for performing thermoelectric metrology on combinatorial thin films. These custom capabilities include a facility for combinatorial thin film synthesis and suite of tools for screening the Seebeck coefficient, electrical resistance, and thermal conductivity of combinatorial films. The room temperature Seebeck coefficient and resistance are measured via an automated multiprobe apparatus, thus obtaining the power factor,S2σ(whereS= Seebeck coefficient,σ= electrical conductivity). In addition, we are developing a high temperature (>300 K) power factor screening tool. Thermal effusivity (to calculate the thermal conductivity) is measured using a frequency domain thermo-reflectance technique. Using these tools, we are capable of performing power factor and thermal conductivity measurements on 1000 distinct sample-points within 6 hours for each instrument. This paper will detail several application examples using these tools on thermoelectric materials, including composition-spread films, conventional thin films, bulk ceramics, ribbons/tapes, and on single crystals. [ABSTRACT FROM AUTHOR] AB - Copyright of Ferroelectrics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - THERMOELECTRIC materials KW - ENERGY conversion KW - POWER resources KW - ENERGY consumption KW - THIN films KW - applications of thermoelectric screening tools KW - combinatorial films KW - high throughput thermoelectric screening tools KW - thermoelectric materials KW - Thermoelectric properties N1 - Accession Number: 99001138; Wong-Ng, W. 1 Yan, Y. 1 Martin, J. 1 Otani, M. 1 Thomas, E. L. 2 Tang, X. F. 3 Green, M. L. 1; Affiliation: 1: Ceramics Division, National Institute of Standards and Technology, Gaithersburg, MD20899 2: Energy Technologies and Materials Division, University of Dayton Research Institute/Air Force Research Laboratory, Dayton, OH45469 3: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei430070, China; Source Info: Oct2014, Vol. 470 Issue 1, p241; Subject Term: NONDESTRUCTIVE testing; Subject Term: THERMOELECTRIC materials; Subject Term: ENERGY conversion; Subject Term: POWER resources; Subject Term: ENERGY consumption; Subject Term: THIN films; Author-Supplied Keyword: applications of thermoelectric screening tools; Author-Supplied Keyword: combinatorial films; Author-Supplied Keyword: high throughput thermoelectric screening tools; Author-Supplied Keyword: thermoelectric materials; Author-Supplied Keyword: Thermoelectric properties; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 19p; Document Type: Article L3 - 10.1080/00150193.2014.923725 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99001138&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Idesman, A. AU - Pham, D. AU - Foley, J.R. AU - Schmidt, M. T1 - Accurate solutions of wave propagation problems under impact loading by the standard, spectral and isogeometric high-order finite elements. Comparative study of accuracy of different space-discretization techniques. JO - Finite Elements in Analysis & Design JF - Finite Elements in Analysis & Design Y1 - 2014/10// VL - 88 M3 - Article SP - 67 EP - 89 SN - 0168874X AB - Abstract: For the first time, accurate numerical solutions to impact problems have been obtained with the standard, spectral, and isogeometric high-order finite elements. Spurious high-frequency oscillations appearing in numerical results are quantified and filtered out by the two-stage time-integration approach. We also use the 1-D impact problem with a simple analytical solution for the comparison of accuracy of the different space-discretization techniques used for transient acoustics and elastodynamics problems. The numerical results show the computational efficiency of the linear finite elements with reduced dispersion compared with other space-discretization techniques used for elastodynamics with implicit and explicit time-integration methods. We also show that for all space-discretization methods considered (except the linear finite elements with the lumped mass matrix), very small time increments which are much smaller than stability limit should be used in basic computations at large observation times. We should note that the size of time increments used at the filtering stage and calculated according to the special formulas defines the range of actual frequencies and can be used as a quantitative measure for the comparison and prediction of the accuracy of different space-discretization techniques. We also show that the new findings are valid in the multidimensional case. [Copyright &y& Elsevier] AB - Copyright of Finite Elements in Analysis & Design is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THEORY of wave motion KW - ISOGEOMETRIC analysis KW - FINITE element method KW - DISCRETIZATION methods KW - ELASTODYNAMICS KW - NUMERICAL analysis KW - Accuracy KW - Elastic and acoustics waves KW - Finite elements KW - Isogeometric elements KW - Spectral elements N1 - Accession Number: 96786370; Idesman, A. 1; Email Address: alexander.idesman@ttu.edu Pham, D. 1 Foley, J.R. 2 Schmidt, M. 2; Affiliation: 1: Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409-1021, USA 2: Air Force Research Laboratory, Munitions Directorate, Eglin Air Force Base, FL 32542, USA; Source Info: Oct2014, Vol. 88, p67; Subject Term: THEORY of wave motion; Subject Term: ISOGEOMETRIC analysis; Subject Term: FINITE element method; Subject Term: DISCRETIZATION methods; Subject Term: ELASTODYNAMICS; Subject Term: NUMERICAL analysis; Author-Supplied Keyword: Accuracy; Author-Supplied Keyword: Elastic and acoustics waves; Author-Supplied Keyword: Finite elements; Author-Supplied Keyword: Isogeometric elements; Author-Supplied Keyword: Spectral elements; Number of Pages: 23p; Document Type: Article L3 - 10.1016/j.finel.2014.05.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96786370&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carhuatanta, Kimberly A. K. AU - Shea, Chloe J. A. AU - Herman, James P. AU - Jankord, Ryan T1 - Unique genetic loci identified for emotional behavior in control and chronic stress conditions. JO - Frontiers in Behavioral Neuroscience JF - Frontiers in Behavioral Neuroscience Y1 - 2014/10// VL - 8 M3 - Article SP - 1 EP - 11 SN - 16625153 AB - An individual's genetic background affects their emotional behavior and response to stress. Although studies have been conducted to identify genetic predictors for emotional behavior or stress response, it remains unknown how prior stress history alters the interaction between an individual's genome and their emotional behavior. Therefore, the purpose of this study is to identify chromosomal regions that affect emotional behavior and are sensitive to stress exposure. We utilized the BXD behavioral genetics mouse model to identify chromosomal regions that predict fear learning and emotional behavior following exposure to a control or chronic stress environment. 62 BXD recombinant inbred strains and C57BL/6 and DBA/2 parental strains underwent behavioral testing including a classical fear conditioning paradigm and the elevated plus maze. Distinct quantitative trait loci (QTLs) were identified for emotional learning, anxiety and locomotion in control and chronic stress populations. Candidate genes, including those with already known functions in learning and stress were found to reside within the identified QTLs. Our data suggest that chronic stress history reveals novel genetic predictors of emotional behavior. [ABSTRACT FROM AUTHOR] AB - Copyright of Frontiers in Behavioral Neuroscience is the property of Frontiers Media S.A. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMOTIONS (Psychology) KW - STRESS (Physiology) KW - LOCUS (Genetics) KW - BEHAVIOR genetics KW - NEUROSCIENCES KW - anxiety KW - BXD KW - emotional behavior KW - fear learning KW - genetics KW - QTL KW - stress N1 - Accession Number: 100078803; Carhuatanta, Kimberly A. K. 1,2 Shea, Chloe J. A. 1 Herman, James P. 3 Jankord, Ryan 1; Email Address: ryan.jankord@us.af.mil; Affiliation: 1: Applied Neuroscience, 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA 2: Research Associate Program, National Research Council, National Academies of Sciences, Washington, DC, USA 3: Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati, Cincinnati, OH, USA; Source Info: Oct2014, Vol. 8, p1; Subject Term: EMOTIONS (Psychology); Subject Term: STRESS (Physiology); Subject Term: LOCUS (Genetics); Subject Term: BEHAVIOR genetics; Subject Term: NEUROSCIENCES; Author-Supplied Keyword: anxiety; Author-Supplied Keyword: BXD; Author-Supplied Keyword: emotional behavior; Author-Supplied Keyword: fear learning; Author-Supplied Keyword: genetics; Author-Supplied Keyword: QTL; Author-Supplied Keyword: stress; Number of Pages: 11p; Document Type: Article L3 - 10.3389/fnbeh.2014.00341 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100078803&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Xia AU - Hu, Zhen AU - Qiu, Robert AU - Wu, Zhiqiang AU - Browning, James AU - Wicks, Michael T1 - Demonstration of cognitive radar for target localization under interference. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2014/10// VL - 50 IS - 4 M3 - Article SP - 2440 EP - 2455 SN - 00189251 AB - An ultrawideband (UWB) multiple input/multiple output (MIMO) cognitive radar has been developed and demonstrated for the first time. Field-programmable gate array (FPGA) is used for waveform-level computing, while waveform optimization is accomplished in CPU. Working as a closed loop, convex optimization is applied to jointly design (arbitrary) transmitted waveforms and the receiving filters in response to the varying wireless environment. Multiple targets localization in the presence of interference is demonstrated. Shown in the experiment, performance improvement is obvious in all interference patterns. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR -- Interference KW - ULTRA-wideband radar KW - MIMO radar KW - WIRELESS localization KW - FIELD programmable gate arrays KW - ARBITRARY waveform generators KW - Correlation KW - Interference KW - Radar KW - Receiving antennas KW - Transmitting antennas N1 - Accession Number: 100028183; Li, Xia 1 Hu, Zhen 1 Qiu, Robert 1 Wu, Zhiqiang 2 Browning, James 3 Wicks, Michael 4; Affiliation: 1: Tennessee Technological University Cookeville, Tennessee, USA 2: Wright State University Dayton, Ohio, USA 3: U.S. Air Force Research Laboratory Dayton, Ohio, USA 4: University of Dayton Research Institute Dayton, Ohio, USA; Source Info: Oct2014, Vol. 50 Issue 4, p2440; Subject Term: RADAR -- Interference; Subject Term: ULTRA-wideband radar; Subject Term: MIMO radar; Subject Term: WIRELESS localization; Subject Term: FIELD programmable gate arrays; Subject Term: ARBITRARY waveform generators; Author-Supplied Keyword: Correlation; Author-Supplied Keyword: Interference; Author-Supplied Keyword: Radar; Author-Supplied Keyword: Receiving antennas; Author-Supplied Keyword: Transmitting antennas; Number of Pages: 16p; Document Type: Article L3 - 10.1109/TAES.2014.120567 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100028183&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CASE AU - Kim, Byoung AU - Goodman, Douglas AU - Li, Mingyang AU - Liu, Jian AU - Li, Jing T1 - Improved reliability-based decision support methodology applicable in system-level failure diagnosis and prognosis. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2014/10// VL - 50 IS - 4 M3 - Case Study SP - 2630 EP - 2641 SN - 00189251 AB - Reliability modeling and troubleshooting reasoning involving complex component interactions in complex systems are an active research topic and a critical challenge to be overcome in decision support. In this paper, we propose an innovative concept of decision support methodology for system failure diagnosis and prognosis in complex systems. Advanced causal structure, incorporating domain and engineering knowledge, and a new Bayesian network (BN) representation of system structure and component interaction are proposed. Based on the BN representation, a Bayesian framework is developed to analyze and fuse the multisource information from different hierarchical levels of a system. This capability supports higher-fidelity modeling and assessing of the reliability of the components, the subsystems, and the system as a whole. The feasibility of our advanced causal structure approach has been proven with implementation using test data acquired from electromechanical actuator systems. A case study is successfully conducted to demonstrate the effectiveness of the proposed methodology. The proposed decision support process in integrated system health management will enable enhancements in flight safety and condition-based maintenance by increasing availability and mission effectiveness while reducing maintenance costs. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYSTEM failures (Engineering) KW - RELIABILITY (Engineering) KW - DECISION support systems KW - HIERARCHICAL Bayes model KW - BAYESIAN analysis KW - Bayes methods KW - Cognition KW - Hierarchical systems KW - Knowledge engineering KW - Prognostics and health management KW - Reliability KW - Uncertainty N1 - Accession Number: 100028197; Kim, Byoung 1 Goodman, Douglas 2 Li, Mingyang 3 Liu, Jian 3 Li, Jing 4; Affiliation: 1: U.S. Air Force Research Laboratory, WPAFB, Ohio, USA 2: Ridgetop Group, Tucson, Arizona, USA 3: University of Arizona, Tucson, Arizona, USA 4: Arizona State University, Tempe, Arizona, USA; Source Info: Oct2014, Vol. 50 Issue 4, p2630; Subject Term: SYSTEM failures (Engineering); Subject Term: RELIABILITY (Engineering); Subject Term: DECISION support systems; Subject Term: HIERARCHICAL Bayes model; Subject Term: BAYESIAN analysis; Author-Supplied Keyword: Bayes methods; Author-Supplied Keyword: Cognition; Author-Supplied Keyword: Hierarchical systems; Author-Supplied Keyword: Knowledge engineering; Author-Supplied Keyword: Prognostics and health management; Author-Supplied Keyword: Reliability; Author-Supplied Keyword: Uncertainty; Number of Pages: 12p; Document Type: Case Study L3 - 10.1109/TAES.2014.120637 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100028197&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Burfeindt, Matthew J. AU - Shea, Jacob D. AU - Van Veen, Barry D. AU - Hagness, Susan C. T1 - Beamforming-Enhanced Inverse Scattering for Microwave Breast Imaging. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2014/10// VL - 62 IS - 10 M3 - Article SP - 5126 EP - 5132 SN - 0018926X AB - We present a focal-beamforming-enhanced formulation of the distorted Born iterative method (DBIM) for microwave breast imaging. Incorporating beamforming into the imaging algorithm has the potential to mitigate the effect of noise on the image reconstruction. We apply the focal-beamforming-enhanced DBIM algorithm to simulated array measurements from two MRI-derived, anatomically realistic numerical breast phantoms and compare its performance to that of the DBIM formulated with two non-focal schemes. The first scheme simply averages scattered field data from reciprocal antenna pairs while the second scheme discards reciprocal pairs. Images of the dielectric properties are reconstructed for signal-to-noise ratios (SNR) ranging from 35 dB down to 0 dB. We show that, for low SNR, the focal beamforming algorithm creates reconstructions that are of higher fidelity with respect to the exact dielectric profiles of the phantoms as compared to reconstructions created using the non-focal schemes. At high SNR, the focal and non-focal reconstructions are of comparable quality. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BEAMFORMING KW - RESEARCH KW - MICROWAVE imaging in medicine KW - BREAST -- Imaging KW - INVERSE scattering transform KW - MAMMOGRAMS KW - PHANTOMS (Radiology) KW - Array signal processing KW - Beamforming KW - biomedical imaging KW - Breast KW - breast imaging KW - Image reconstruction KW - inverse problems KW - inverse scattering KW - mammography KW - microwave imaging KW - Phantoms KW - Signal to noise ratio KW - Vectors N1 - Accession Number: 98736853; Burfeindt, Matthew J. 1 Shea, Jacob D. 2 Van Veen, Barry D. 2 Hagness, Susan C. 2; Affiliation: 1: Air Force Research Laboratory, Eglin AFB, FL, USA 2: Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI, USA; Source Info: Oct2014, Vol. 62 Issue 10, p5126; Subject Term: BEAMFORMING; Subject Term: RESEARCH; Subject Term: MICROWAVE imaging in medicine; Subject Term: BREAST -- Imaging; Subject Term: INVERSE scattering transform; Subject Term: MAMMOGRAMS; Subject Term: PHANTOMS (Radiology); Author-Supplied Keyword: Array signal processing; Author-Supplied Keyword: Beamforming; Author-Supplied Keyword: biomedical imaging; Author-Supplied Keyword: Breast; Author-Supplied Keyword: breast imaging; Author-Supplied Keyword: Image reconstruction; Author-Supplied Keyword: inverse problems; Author-Supplied Keyword: inverse scattering; Author-Supplied Keyword: mammography; Author-Supplied Keyword: microwave imaging; Author-Supplied Keyword: Phantoms; Author-Supplied Keyword: Signal to noise ratio; Author-Supplied Keyword: Vectors; NAICS/Industry Codes: 621512 Diagnostic Imaging Centers; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TAP.2014.2344096 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98736853&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hu, Miao AU - Li, Hai AU - Chen, Yiran AU - Wu, Qing AU - Rose, Garrett S. AU - Linderman, Richard W. T1 - Memristor Crossbar-Based Neuromorphic Computing System: A Case Study. JO - IEEE Transactions on Neural Networks & Learning Systems JF - IEEE Transactions on Neural Networks & Learning Systems Y1 - 2014/10// VL - 25 IS - 10 M3 - Article SP - 1864 EP - 1878 SN - 2162237X AB - By mimicking the highly parallel biological systems, neuromorphic hardware provides the capability of information processing within a compact and energy-efficient platform. However, traditional Von Neumann architecture and the limited signal connections have severely constrained the scalability and performance of such hardware implementations. Recently, many research efforts have been investigated in utilizing the latest discovered memristors in neuromorphic systems due to the similarity of memristors to biological synapses. In this paper, we explore the potential of a memristor crossbar array that functions as an autoassociative memory and apply it to brain-state-in-a-box (BSB) neural networks. Especially, the recall and training functions of a multianswer character recognition process based on the BSB model are studied. The robustness of the BSB circuit is analyzed and evaluated based on extensive Monte Carlo simulations, considering input defects, process variations, and electrical fluctuations. The results show that the hardware-based training scheme proposed in the paper can alleviate and even cancel out the majority of the noise issue. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Neural Networks & Learning Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEURAL networks (Neurobiology) KW - COMPUTER systems KW - VON Neumann architecture (Computers) KW - COMPUTERS KW - SYNAPSES KW - FLUCTUATIONS (Physics) KW - CASE studies KW - Arrays KW - Associative memory KW - Biological neural networks KW - brain-state-in-a-box (BSB) KW - crossbar array KW - Hardware KW - memristor KW - Memristors KW - neuromorphic hardware KW - Neuromorphics KW - Neurons KW - Training N1 - Accession Number: 98708731; Hu, Miao 1 Li, Hai 1 Chen, Yiran 1 Wu, Qing 2 Rose, Garrett S. 2 Linderman, Richard W. 2; Affiliation: 1: Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA, USA 2: Air Force Research Laboratory, Information Directorate, Rome, NY, USA; Source Info: Oct2014, Vol. 25 Issue 10, p1864; Subject Term: NEURAL networks (Neurobiology); Subject Term: COMPUTER systems; Subject Term: VON Neumann architecture (Computers); Subject Term: COMPUTERS; Subject Term: SYNAPSES; Subject Term: FLUCTUATIONS (Physics); Subject Term: CASE studies; Author-Supplied Keyword: Arrays; Author-Supplied Keyword: Associative memory; Author-Supplied Keyword: Biological neural networks; Author-Supplied Keyword: brain-state-in-a-box (BSB); Author-Supplied Keyword: crossbar array; Author-Supplied Keyword: Hardware; Author-Supplied Keyword: memristor; Author-Supplied Keyword: Memristors; Author-Supplied Keyword: neuromorphic hardware; Author-Supplied Keyword: Neuromorphics; Author-Supplied Keyword: Neurons; Author-Supplied Keyword: Training; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 334111 Electronic Computer Manufacturing; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443142 Electronics Stores; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); Number of Pages: 15p; Document Type: Article L3 - 10.1109/TNNLS.2013.2296777 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98708731&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Agarwal, Ankur AU - Shiffler, Don AU - Lu, Xinpei AU - White, William AU - Sankaran, Mohan T1 - Guest Editorial 7th Triennial Special Issue on Images in Plasma Science. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2014/10//Oct2014 Part 1 VL - 42 IS - 10 M3 - Article SP - 2327 EP - 2327 SN - 00933813 AB - The adage “A picture is worth a thousand words,” while used to the point of being trite, conveys a deep truth. Humans remain a highly visually driven species, using images to convey information in all areas of endeavour, ranging from the arts and humanities to hard science. As an added benefit, much as in the photography of natural scenes, such as mountain ranges or alpine lakes, scientific images can convey great and profound beauty. Thus, images from the Hubble Space Telescope inspire awe and admiration as well as convey scientific truths about the origin and evolution of the universe. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA physics KW - RESEARCH KW - PHYSICS KW - PHOTOGRAPHY KW - LANDSCAPES KW - Editorials KW - Educational institutions KW - Image color analysis KW - Imaging KW - Laboratories KW - Plasmas KW - Special issues and sections KW - HUBBLE Space Telescope (Spacecraft) N1 - Accession Number: 99058934; Agarwal, Ankur 1 Shiffler, Don 2 Lu, Xinpei 3 White, William 2 Sankaran, Mohan 4; Affiliation: 1: , Applied Materials Sunnyvale, CA, USA 2: Air Force Research Laboratory, Directed Energy Directorate Kirtland AFB, NM, USA 3: College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, China 4: Department of Chemical Engineering, Case Western Reserve University, Cleveland, OH, USA; Source Info: Oct2014 Part 1, Vol. 42 Issue 10, p2327; Subject Term: PLASMA physics; Subject Term: RESEARCH; Subject Term: PHYSICS; Subject Term: PHOTOGRAPHY; Subject Term: LANDSCAPES; Author-Supplied Keyword: Editorials; Author-Supplied Keyword: Educational institutions; Author-Supplied Keyword: Image color analysis; Author-Supplied Keyword: Imaging; Author-Supplied Keyword: Laboratories; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Special issues and sections; Company/Entity: HUBBLE Space Telescope (Spacecraft); Number of Pages: 1p; Document Type: Article L3 - 10.1109/TPS.2014.2347751 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99058934&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tang, Wilkin AU - Golby, Ken AU - LaCour, Matthew AU - Knowles, Timothy T1 - Experimental Study of Electric Field Screening of Four Carbon Fiber Cathodes in a Linear Array Configuration. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2014/10//Oct2014 Part 1 VL - 42 IS - 10 M3 - Article SP - 2580 EP - 2581 SN - 00933813 AB - Electric field screening caused by the proximity of individual field emitters in a field emitter array influences the current that can be obtained. This paper describes the image with four carbon fiber field emitters at a \(500~\mu \) m separation in a linear configuration to isolate and quantify the effect of electric field screening. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC fields -- Research KW - CARBON fibers KW - RESEARCH KW - FIELD emission cathodes KW - FIELD emission KW - ELECTRON emission KW - Arrays KW - Carbon dioxide KW - Carbon fiber cathode KW - Cathodes KW - electric field screening KW - field emission KW - Image edge detection KW - Microwave imaging KW - Scanning electron microscopy KW - Voltage measurement N1 - Accession Number: 99058772; Tang, Wilkin 1 Golby, Ken 2 LaCour, Matthew 2 Knowles, Timothy 3; Affiliation: 1: , Air Force Research Laboratory, Albuquerque, NM, USA 2: , SAIC, Albuquerque, NM, USA 3: , Energy Science Laboratories, Inc., San Diego, CA, USA; Source Info: Oct2014 Part 1, Vol. 42 Issue 10, p2580; Subject Term: ELECTRIC fields -- Research; Subject Term: CARBON fibers; Subject Term: RESEARCH; Subject Term: FIELD emission cathodes; Subject Term: FIELD emission; Subject Term: ELECTRON emission; Author-Supplied Keyword: Arrays; Author-Supplied Keyword: Carbon dioxide; Author-Supplied Keyword: Carbon fiber cathode; Author-Supplied Keyword: Cathodes; Author-Supplied Keyword: electric field screening; Author-Supplied Keyword: field emission; Author-Supplied Keyword: Image edge detection; Author-Supplied Keyword: Microwave imaging; Author-Supplied Keyword: Scanning electron microscopy; Author-Supplied Keyword: Voltage measurement; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2014.2322996 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99058772&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jones, John G. AU - Sun, Lirong AU - Murphy, Neil R. AU - Jakubiak, Rachel T1 - Optical Multichannel Imaging of Pulsed Laser Deposition of ZnO. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2014/10//Oct2014 Part 1 VL - 42 IS - 10 M3 - Article SP - 2590 EP - 2591 SN - 00933813 AB - Pulsed laser deposition is an efficient technique to obtain stoichiometric material transfer from target to substrate and has been used by researchers and in industry for depositing materials for use in applications ranging from hard coatings and superconductors to optical materials. The images detailed here will demonstrate the unique plume evolution that occurs and the high-speed ionic species, and slow-speed neutral and molecular species that travel from target material to substrate. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PULSED laser deposition KW - RESEARCH KW - COATING processes KW - LASER deposition KW - ZINC oxide KW - OXIDES KW - High-speed optical techniques KW - Imaging KW - materials preparation KW - Optical imaging KW - Optical pulses KW - Pulsed laser deposition KW - Substrates KW - Zinc Oxide N1 - Accession Number: 99058919; Jones, John G. 1 Sun, Lirong 2 Murphy, Neil R. 1 Jakubiak, Rachel 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 2: , General Dynamics Information Technology, Dayton, OH, USA USA; Source Info: Oct2014 Part 1, Vol. 42 Issue 10, p2590; Subject Term: PULSED laser deposition; Subject Term: RESEARCH; Subject Term: COATING processes; Subject Term: LASER deposition; Subject Term: ZINC oxide; Subject Term: OXIDES; Author-Supplied Keyword: High-speed optical techniques; Author-Supplied Keyword: Imaging; Author-Supplied Keyword: materials preparation; Author-Supplied Keyword: Optical imaging; Author-Supplied Keyword: Optical pulses; Author-Supplied Keyword: Pulsed laser deposition; Author-Supplied Keyword: Substrates; Author-Supplied Keyword: Zinc Oxide; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2014.2342159 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99058919&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liu, David AU - Huffman, Richard E. AU - Branam, Richard D. AU - Hargus, William A. T1 - Ultrahigh Speed Images of Hall Thruster Azimuthal Instabilities. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2014/10//Oct2014 Part 1 VL - 42 IS - 10 M3 - Article SP - 2656 EP - 2657 SN - 00933813 AB - Visible emission of the azimuthal plasma instabilities were observed within the plume of a low-power Hall thruster utilizing ultrahigh speed imaging. The captured images provide time-dependent and spatial information on the azimuthal instability in the axial-radial plane of the thruster, which have not been well characterized. These images are then compared with observations made based on their probe measurements of azimuthal instabilities termed spoke instabilities. Data from the images show that the spoke instabilities are more complex than originally described and have additional features not detectable with probe measurements in a single plane. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HALL effect thruster KW - RESEARCH KW - HALL effect KW - ELECTRIC propulsion KW - ELECTRIC fields -- Research KW - HALL effect devices KW - Anodes KW - Cathodes KW - Extraterrestrial measurements KW - Hall thruster instabilities KW - Ionization KW - optical emission KW - Plasmas KW - Probes KW - Shape N1 - Accession Number: 99058861; Liu, David 1 Huffman, Richard E. 1 Branam, Richard D. 1 Hargus, William A. 2; Affiliation: 1: Department of Aeronautical and Astronautical Engineering, Air Force Institute of Technology, Wright-Patterson AFB, OH, USA 2: , Air Force Research Laboratory, Propulsion Directorate, Edwards AFB, CA, USA; Source Info: Oct2014 Part 1, Vol. 42 Issue 10, p2656; Subject Term: HALL effect thruster; Subject Term: RESEARCH; Subject Term: HALL effect; Subject Term: ELECTRIC propulsion; Subject Term: ELECTRIC fields -- Research; Subject Term: HALL effect devices; Author-Supplied Keyword: Anodes; Author-Supplied Keyword: Cathodes; Author-Supplied Keyword: Extraterrestrial measurements; Author-Supplied Keyword: Hall thruster instabilities; Author-Supplied Keyword: Ionization; Author-Supplied Keyword: optical emission; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Probes; Author-Supplied Keyword: Shape; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2014.2325799 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99058861&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Meyer, John K. AU - Merlino, Robert L. AU - Heinrich, Jonathon R. AU - Kim, Su-Hyun T1 - Flow of Dusty Plasma Around an Obstacle. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2014/10//Oct2014 Part 1 VL - 42 IS - 10 M3 - Article SP - 2690 EP - 2691 SN - 00933813 AB - Single frame video images of dusty plasmas flowing around a conducting wire are presented in this paper. The images were obtained by laser illumination of the dust suspension with the reflected light recorded using a fast video camera. The images from two different configurations are shown. The first image records the formation of a bow shock formed when a supersonic dust cloud impinges on a thin-wire biased to repel the negatively charged dust. The second image shows the deflection of a thin stream of dust particles around a negatively charged wire. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DUSTY plasmas KW - RESEARCH KW - PLASMA (Ionized gases) -- Research KW - LASERS -- Research KW - BOW shock (Astrophysics) KW - CAMCORDERS KW - Anodes KW - Cameras KW - Dusty plasmas KW - Electric shock KW - Streaming media KW - Wires N1 - Accession Number: 99058686; Meyer, John K. 1 Merlino, Robert L. 1 Heinrich, Jonathon R. 2 Kim, Su-Hyun 3; Affiliation: 1: Department of Physics and Astronomy, University of Iowa, Iowa City, IA, USA 2: , Air Force Research Laboratory, Kirtland AFB, NM, USA 3: Mathematical and Science Division, Columbia Basin College, Pasco, WA, USA; Source Info: Oct2014 Part 1, Vol. 42 Issue 10, p2690; Subject Term: DUSTY plasmas; Subject Term: RESEARCH; Subject Term: PLASMA (Ionized gases) -- Research; Subject Term: LASERS -- Research; Subject Term: BOW shock (Astrophysics); Subject Term: CAMCORDERS; Author-Supplied Keyword: Anodes; Author-Supplied Keyword: Cameras; Author-Supplied Keyword: Dusty plasmas; Author-Supplied Keyword: Electric shock; Author-Supplied Keyword: Streaming media; Author-Supplied Keyword: Wires; NAICS/Industry Codes: 334310 Audio and Video Equipment Manufacturing; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2014.2302374 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99058686&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schmitt-Sody, Andreas AU - Lucero, Adrian AU - Kamer, Brian AU - French, David T1 - Plasma Generation by Laser Filamentation in Air. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2014/10//Oct2014 Part 1 VL - 42 IS - 10 M3 - Article SP - 2692 EP - 2693 SN - 00933813 AB - Streak cameras, with high-temporal resolution, are a powerful tool to image light propagation and plasma dynamics. Here, we present the image of a 2.2-TW peak power, 50-fs laser pulse, propagating in a nonlinear fashion over a distance of 1.3 m, leaving behind plasma. A direct measurement of the Rayleigh scattering of the pulse and the plasma emission are presented here. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA light propagation KW - RESEARCH KW - LASER pulses KW - PLASMA dynamics KW - LIGHT propagation KW - RAYLEIGH scattering KW - Cameras KW - Laser beams KW - Laser theory KW - Mirrors KW - Nonlinear optics KW - Particle beams KW - Plasma measurements KW - Plasmas KW - ultrafast optics N1 - Accession Number: 99058691; Schmitt-Sody, Andreas 1 Lucero, Adrian 1 Kamer, Brian 1 French, David 1; Affiliation: 1: , Air Force Research Laboratory, Kirtland AFB, NM, USA; Source Info: Oct2014 Part 1, Vol. 42 Issue 10, p2692; Subject Term: PLASMA light propagation; Subject Term: RESEARCH; Subject Term: LASER pulses; Subject Term: PLASMA dynamics; Subject Term: LIGHT propagation; Subject Term: RAYLEIGH scattering; Author-Supplied Keyword: Cameras; Author-Supplied Keyword: Laser beams; Author-Supplied Keyword: Laser theory; Author-Supplied Keyword: Mirrors; Author-Supplied Keyword: Nonlinear optics; Author-Supplied Keyword: Particle beams; Author-Supplied Keyword: Plasma measurements; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: ultrafast optics; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2014.2307172 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99058691&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Campos, Raymond AU - Mansur, Aleksander A. AU - Cook, Chloe H. AU - Batchelor, Benjamin AU - Iacono, Scott T. AU - Jr.Smith, Dennis W. T1 - AB-type monomers for the preparation of perfluorocycloalkene (PFCA) aryl ether polymers. JO - Journal of Fluorine Chemistry JF - Journal of Fluorine Chemistry Y1 - 2014/10// VL - 166 M3 - Article SP - 60 EP - 68 SN - 00221139 AB - A method for the preparation of AB-type monomers with complimentary fluoro-olefin and phenol functionalities is described. The three-step process is amenable to commercial scale up and uses widely-available, commercial reagents including bisphenols and perfluorocycloalkene (PFCA) compounds. Title compounds and intermediates were characterized via multi-nuclear NMR and FT-IR spectroscopy providing structural and mechanistic elucidation of PFCA step-growth polymerizations. The formation of vinyl and allyl substituted products were quantified and shown to be dependent on PFCA ring size and reaction medium. Nearly equal amounts of vinyl- and allyl-substituted products were observed with perfluorocyclohexene (PFCH) while 2–11% allyl-substitution was observed with perfluorocyclopentene (PFCP), depending on reaction medium polarity. Previous PFCA research and characterization of title compounds suggests that fluoride-catalyzed rearrangement is primarily responsible the formation of two substitution products. Polymerization of an AB-type monomer derived from bisphenol A is demonstrated and was shown to reproducibly result in film-forming polymers with higher molecular weights than previously described methods. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Fluorine Chemistry is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONOMERS KW - CYCLOALKENES KW - POLYMERS KW - ALKENES KW - MOLECULAR weights KW - POLYMERIZATION KW - AB type monomers KW - Fluoroolefin monomers KW - Nucleophilic vinylic substitution KW - Perfluorocycloalkene KW - Semi-fluorinated polymers KW - Step-growth polymerization N1 - Accession Number: 98598285; Campos, Raymond 1 Mansur, Aleksander A. 1 Cook, Chloe H. 2 Batchelor, Benjamin 1 Iacono, Scott T. 3; Email Address: scott.iacono@usafa.edu Jr.Smith, Dennis W. 1; Email Address: dwsmith@utdallas.edu; Affiliation: 1: Department of Chemistry and The Alan G. MacDiarmid Nano Tech Institute, The University of Texas at Dallas, Richardson, TX 75080, United States 2: The Woodlands High School, 6101 Research Forest Drive, The Woodlands, TX 77381, United States 3: Department of Chemistry and Chemistry Research Center, United States Air Force Academy, 2355 Fairchild Drive, Suite 2N225, Colorado Springs, CO 80840, United States; Source Info: Oct2014, Vol. 166, p60; Subject Term: MONOMERS; Subject Term: CYCLOALKENES; Subject Term: POLYMERS; Subject Term: ALKENES; Subject Term: MOLECULAR weights; Subject Term: POLYMERIZATION; Author-Supplied Keyword: AB type monomers; Author-Supplied Keyword: Fluoroolefin monomers; Author-Supplied Keyword: Nucleophilic vinylic substitution; Author-Supplied Keyword: Perfluorocycloalkene; Author-Supplied Keyword: Semi-fluorinated polymers; Author-Supplied Keyword: Step-growth polymerization; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jfluchem.2014.07.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98598285&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Naito, Clay AU - States, Joe AU - Jackson, Christopher AU - Bewick, Bryan T1 - Assessment of Crumb Rubber Concrete for Flexural Structural Members. JO - Journal of Materials in Civil Engineering JF - Journal of Materials in Civil Engineering Y1 - 2014/10// VL - 26 IS - 10 M3 - Article SP - 1 EP - 8 SN - 08991561 AB - To address the ever-increasing quantity of scrap tires produced in the United States, a study is conducted on the use of crumb rubber in concrete for enhancement of structures against blast effects. Crumb-rubber concrete (CRC) is produced by replacing a volume percentage of the traditional coarse and/or fine aggregate with crumb-rubber particles. Crumb rubber is produced in various gradations from used vehicle tires. The research program characterizes the mechanical properties of CRC and provides an assessment of the capability of CRC in providing flexural resistance for structural applications. The experimental and analytical investigation found the following four results: (1) crumb rubber replacement of coarse and fine aggregate is done at a cost premium of approximately 0.75 times the replacement percentage; (2) the addition of crumb rubber results in a decrease in unit weight, compression strength, splitting tensile strength, and elastic modulus, which are linearly related to the addition of rubber; (3) the modulus of rupture was not sensitive to replacement of up to 40% rubber aggregate; and (4) flexural failure modes occur at lower demand levels due to the use of rubber replacement. The reductions are consistent with the material property conclusions previously discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials in Civil Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRUMB rubber KW - BLAST effect KW - FLEXURAL strength KW - MATERIALS -- Compression testing KW - PORTLAND cement KW - CONCRETE -- Research KW - Aggregates KW - Blast response KW - Blasting KW - Constitutive properties KW - Constitutive relations KW - Flexural strength KW - Recycled material KW - Recycling KW - Rubber KW - Rubber aggregate KW - Structural members N1 - Accession Number: 98256859; Naito, Clay 1; Email Address: cjn3@lehigh.edu States, Joe 2; Email Address: J.States@gaiconsultants.com Jackson, Christopher 3; Email Address: Christopher.Jackson.ctr@tyndall.af.mil Bewick, Bryan 4; Email Address: bbewick@protectionconsultants.com; Affiliation: 1: Associate Professor, Dept. of Civil and Environmental Engineering, Lehigh Univ., ATLSS Center, 117 ATLSS Dr., Bethlehem, PA 18015 2: Senior Structural Engineer-in-Training, GAI Consultants, Inc., 385 E. Waterfront Dr., Homestead, PA 15120 3: Air Force Research Laboratory Support Contractor, Applied Research Associates, Inc., Tyndall AFB, FL 32403 4: Project Engineer, Protection Engineering Consultants, 14144 Trautwein Rd., Austin, TX 78737; Source Info: Oct2014, Vol. 26 Issue 10, p1; Subject Term: CRUMB rubber; Subject Term: BLAST effect; Subject Term: FLEXURAL strength; Subject Term: MATERIALS -- Compression testing; Subject Term: PORTLAND cement; Subject Term: CONCRETE -- Research; Author-Supplied Keyword: Aggregates; Author-Supplied Keyword: Blast response; Author-Supplied Keyword: Blasting; Author-Supplied Keyword: Constitutive properties; Author-Supplied Keyword: Constitutive relations; Author-Supplied Keyword: Flexural strength; Author-Supplied Keyword: Recycled material; Author-Supplied Keyword: Recycling; Author-Supplied Keyword: Rubber; Author-Supplied Keyword: Rubber aggregate; Author-Supplied Keyword: Structural members; NAICS/Industry Codes: 327999 All Other Miscellaneous Nonmetallic Mineral Product Manufacturing; NAICS/Industry Codes: 327320 Ready-Mix Concrete Manufacturing; NAICS/Industry Codes: 327310 Cement Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1061/(ASCE)MT.1943-5533.0000986 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98256859&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, James L. T1 - The Wrong Enemy: America in Afghanistan, 2001–2014. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2014/10// VL - 13 IS - 3 M3 - Book Review SP - 298 EP - 300 PB - Routledge SN - 15027570 KW - AFGHAN War, 2001- KW - NONFICTION KW - GALL, Carlotta KW - WRONG Enemy: America in Afghanistan 2001-2014, The (Book) N1 - Accession Number: 99546186; Cook, James L. 1; Affiliation: 1: Professor of Philosophy, US Air Force Academy; Source Info: Oct2014, Vol. 13 Issue 3, p298; Subject Term: AFGHAN War, 2001-; Subject Term: NONFICTION; Reviews & Products: WRONG Enemy: America in Afghanistan 2001-2014, The (Book); People: GALL, Carlotta; Number of Pages: 3p; Document Type: Book Review L3 - 10.1080/15027570.2014.975942 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99546186&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gambone Hudson, Angela AU - Curtis, Robert T1 - Automation in the blood bank: things to think about. JO - MLO: Medical Laboratory Observer JF - MLO: Medical Laboratory Observer Y1 - 2014/10// VL - 46 IS - 10 M3 - Article SP - 10 EP - 12 PB - NP Communications, LLC SN - 05807247 AB - The article discusses the factors considered by medical institutions when automating the blood bank. Topics covered include the advantages of a manual method of blood testing such as faster release of results, the need for blood bank directors to define their workload and the importance of considering the personnel aspects of automation. Also mentioned is the lack of confidence in the testing results that may come from differing results from the day and night shift personnel. KW - AUTOMATION KW - BLOOD banks KW - COMMERCIAL products -- Evaluation KW - DECISION making KW - LABORATORIES KW - CONTINUING education units N1 - Accession Number: 98691776; Gambone Hudson, Angela 1 Curtis, Robert 2; Affiliation: 1: Lieutenant colonel, United States Air Force; Chief , Air Force Blood Program 2: Major, U.S. Air Force; Deputy Chief and QA, Air Force Blood Program; Source Info: Oct2014, Vol. 46 Issue 10, p10; Subject Term: AUTOMATION; Subject Term: BLOOD banks; Subject Term: COMMERCIAL products -- Evaluation; Subject Term: DECISION making; Subject Term: LABORATORIES; Subject Term: CONTINUING education units; NAICS/Industry Codes: 621991 Blood and Organ Banks; NAICS/Industry Codes: 621990 All other ambulatory health care services; NAICS/Industry Codes: 523130 Commodity Contracts Dealing; NAICS/Industry Codes: 523140 Commodity Contracts Brokerage; NAICS/Industry Codes: 541940 Veterinary Services; NAICS/Industry Codes: 621511 Medical Laboratories; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98691776&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 107832308 T1 - Automation in the blood bank: things to think about...Here are some nuts-and-bolts considerations for blood bank leaders. AU - Gambone Hudson, Angela AU - Curtis, Robert Y1 - 2014/10// N1 - Accession Number: 107832308. Language: English. Entry Date: 20141008. Revision Date: 20150820. Publication Type: Journal Article. Note: For CE see Supplement pages 16. Journal Subset: Allied Health; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Laboratory Diagnosis. NLM UID: 0225602. KW - Blood Banks KW - Automation, Laboratory KW - Decision Making KW - Product Evaluation KW - Education, Continuing (Credit) SP - 10 EP - 12 JO - MLO: Medical Laboratory Observer JF - MLO: Medical Laboratory Observer JA - MLO VL - 46 IS - 10 CY - Sarasota, Florida PB - NP Communications, LLC SN - 0580-7247 AD - Lieutenant colonel, United States Air Force; Chief , Air Force Blood Program AD - Major, U.S. Air Force; Deputy Chief and QA, Air Force Blood Program U2 - PMID: 25665239. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107832308&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 103895445 T1 - Provision of Nutrition Support Therapies in the Recent Iraq and Afghanistan Conflicts. AU - Stankorb, Susan M. AU - Ramsey, Casside AU - Clark, Heidi AU - Osgood, Tamara Y1 - 2014/10// N1 - Accession Number: 103895445. Language: English. Entry Date: 20141029. Revision Date: 20150820. Publication Type: Journal Article; case study. Journal Subset: Allied Health; Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services; Nutrition. NLM UID: 8606733. KW - Nutritional Support -- Ethical Issues KW - Iraq KW - Afghanistan KW - War KW - Military Medicine KW - Terminal Care KW - Dietitians KW - Wounds and Injuries SP - 605 EP - 611 JO - Nutrition in Clinical Practice JF - Nutrition in Clinical Practice JA - NUTR CLIN PRACT VL - 29 IS - 5 CY - Thousand Oaks, California PB - Sage Publications Inc. SN - 0884-5336 AD - Brooke Army Medical Center, San Antonio, Texas, U.S. Military Baylor-Graduate Program in Nutrition, San Antonio, Texas, United States Army AD - United States Army, Landstuhl Regional Medical Center, Landstuhl, Germany AD - U.S. Military Baylor-Graduate Program in Nutrition, San Antonio, Texas, United States Air Force AD - United States Army, Evans Army Community Hospital, Ft Carson, Colorado U2 - PMID: 25606636. DO - 10.1177/0884533614543329 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=103895445&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Reames, Donald AU - Cliver, Edward AU - Kahler, Stephen T1 - Abundance Enhancements in Impulsive Solar Energetic-Particle Events with Associated Coronal Mass Ejections. JO - Solar Physics JF - Solar Physics Y1 - 2014/10// VL - 289 IS - 10 M3 - Article SP - 3817 EP - 3841 PB - Springer Science & Business Media B.V. SN - 00380938 AB - We study the abundances of the elements He through Pb in Fe-rich impulsive solar energetic-particle (SEP) events with measurable abundances of ions with atomic number Z>2 observed on the Wind spacecraft, and their relationship with coronal mass ejections (CMEs) observed by the Large Angle and Spectrometric Coronagraph (LASCO) onboard the Solar and Heliospheric Observatory (SOHO). On an average the element abundances in these events are similar to coronal abundances at low Z but, for heavier elements, enhancements rise as a power law in the mass-to-charge ratio A/ Q of the ions (at coronal temperatures of 2.5 - 3 MK) to a factor of 3 at Ne, 9 at Fe, and 900 for 76≤ Z≤82. Energy dependences of abundances are minimal in the 2 - 15 MeV amu range. The 111 of these Fe-rich impulsive SEP events we found, between November 1994 and August 2013 using the Wind spacecraft, have a 69 % association rate with CMEs. The CMEs are narrow with a median width of 75, are characteristically from western longitudes on the Sun, and have a median speed of ≈ 600 km s. Nearly all SEP onsets occur within 1.5 - 5 h of the CME onset. The faster (> 700 km s), wider CMEs in our sample are related to SEPs with coronal abundances indicating hot coronal plasma with fully ionized He, C, N and O and moderate enhancements of heavier elements, relative to He, but slower (< 700 km s), narrower CMEs emerge from cooler plasma where higher SEP mass-to-charge ratios, A/ Q, yield much greater abundance enhancements, even for C/He and O/He. Apparently, the open magnetic-reconnection region where the impulsive SEPs are accelerated also provides the energy to drive out CME plasma, accounting for a strong, probably universal, impulsive SEP-CME association. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR energetic particles KW - CORONAL mass ejections KW - ATOMIC number KW - HELIOSPHERE (Astrophysics) KW - POWER law (Mathematics) KW - HIGH temperature plasmas KW - Coronal mass ejections KW - Shock waves KW - Solar energetic particles KW - Solar system abundances N1 - Accession Number: 97029916; Reames, Donald 1; Email Address: dvreames@umd.edu Cliver, Edward 2; Email Address: ecliver@nso.edu Kahler, Stephen 3; Email Address: stephen.kahler@kirtland.af.mil; Affiliation: 1: Institute for Physical Science and Technology, University of Maryland, College Park 20742-2431 USA 2: Space Vehicles Directorate, Air Force Research Laboratory, Sunspot 88349 USA 3: Space Vehicles Directorate, Air Force Research Laboratory, 3550 Aberdeen Avenue Kirtland AFB 87117 USA; Source Info: Oct2014, Vol. 289 Issue 10, p3817; Subject Term: SOLAR energetic particles; Subject Term: CORONAL mass ejections; Subject Term: ATOMIC number; Subject Term: HELIOSPHERE (Astrophysics); Subject Term: POWER law (Mathematics); Subject Term: HIGH temperature plasmas; Author-Supplied Keyword: Coronal mass ejections; Author-Supplied Keyword: Shock waves; Author-Supplied Keyword: Solar energetic particles; Author-Supplied Keyword: Solar system abundances; Number of Pages: 25p; Document Type: Article L3 - 10.1007/s11207-014-0547-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97029916&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lyons, Joseph B. AU - Luginsland, John W. T1 - White Papers and Beyond: Reflections From Former Grants Officers. JO - TIP: The Industrial-Organizational Psychologist JF - TIP: The Industrial-Organizational Psychologist Y1 - 2014/10// VL - 52 IS - 2 M3 - Opinion SP - 129 EP - 135 SN - 07391110 AB - In this article the authors reflect on several areas of grant writing process including the role of program officers (POs), the whitepaper process and tips on how to get follow-on funding. The authors mention the key duties of a PO including making funding decisions for proposals and aligning the research portfolio to organizational objectives. Suggestions on how to deal with a rejection notice and what to do after receiving an acceptance notice are also offered. KW - TECHNICAL writing KW - RESEARCH grants KW - GRANTS (Money) KW - ORGANIZATIONAL goals KW - REJECTION (Psychology) N1 - Accession Number: 98571448; Lyons, Joseph B. 1 Luginsland, John W. 1; Affiliation: 1: Air Force Research Laboratory; Source Info: Oct2014, Vol. 52 Issue 2, p129; Subject Term: TECHNICAL writing; Subject Term: RESEARCH grants; Subject Term: GRANTS (Money); Subject Term: ORGANIZATIONAL goals; Subject Term: REJECTION (Psychology); NAICS/Industry Codes: 813219 Other Grantmaking and Giving Services; NAICS/Industry Codes: 711510 Independent Artists, Writers, and Performers; Number of Pages: 7p; Document Type: Opinion UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98571448&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Drummy, Lawrence F. T1 - Electron microscopy of organic-inorganic interfaces: Advantages of low voltage. JO - Ultramicroscopy JF - Ultramicroscopy Y1 - 2014/10// VL - 145 M3 - Article SP - 74 EP - 79 SN - 03043991 AB - Low voltage electron microscopy has been applied to many types of materials in the last several decades with great success. The extremely strong interaction of the low voltage electrons with the sample gives high scattering contrast, however it can also result in significant damage of the specimen. Irreparable damage to several types of organic materials results from their large cross section for ionization, or radiolysis, at low voltage. Knock-on damage, which is significant at high voltages for many ceramics, semiconductors, minerals and ordered carbonaceous material such as graphene, is often reduced at low voltages. For organics which damage by radiolysis, measured beam stability increases at higher voltages, but the mass-thickness contrast is also reduced. An increased defocus can be used to generate phase contrast at higher voltages, although it comes at the expense of resolution, as the first zero in the contrast transfer function moves toward larger length scales with increasing defocus. Several examples of low and high voltage (5 kV up to 300 kV) experimental TEM images of organic-inorganic interfaces are used to demonstrate these phenomena. [ABSTRACT FROM AUTHOR] AB - Copyright of Ultramicroscopy is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERFACES (Physical sciences) KW - LOW voltage systems KW - ELECTRON microscopy KW - SCATTERING (Physics) KW - RADIOLYSIS KW - IONIZATION (Atomic physics) KW - Beam damage KW - Contrast KW - Low voltage KW - Nanoparticles KW - Organic materials KW - Organic/inorganic interfaces N1 - Accession Number: 97449503; Drummy, Lawrence F. 1; Email Address: lawrence.drummy.1@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, 2941 Hobson Way, Wright Patterson Air Force Base, OH 45433, USA; Source Info: Oct2014, Vol. 145, p74; Subject Term: INTERFACES (Physical sciences); Subject Term: LOW voltage systems; Subject Term: ELECTRON microscopy; Subject Term: SCATTERING (Physics); Subject Term: RADIOLYSIS; Subject Term: IONIZATION (Atomic physics); Author-Supplied Keyword: Beam damage; Author-Supplied Keyword: Contrast; Author-Supplied Keyword: Low voltage; Author-Supplied Keyword: Nanoparticles; Author-Supplied Keyword: Organic materials; Author-Supplied Keyword: Organic/inorganic interfaces; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.ultramic.2014.05.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97449503&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thompson, Greg J. T1 - VICTIMS’ RIGHTS IN THE MILITARY: EMPOWERING SEXUAL ASSAULT VICTIMS WITH A MEANINGFUL DOD VICTIMS’ BILL OF RIGHTS. JO - Virginia Journal of Social Policy & the Law JF - Virginia Journal of Social Policy & the Law Y1 - 2014/10// VL - 21 IS - 3 M3 - Article SP - 423 EP - 470 SN - 10687955 AB - The Department of Defense (DoD) has spent decades attempting to formulate a meaningful policy for victims’ rights in the military courts-martial system. The result has been less than helpful to the victims, as the scales of justice have weighed heavily in favor of the accused. Although current DoD policy affords victims’ rights, they lack specific actionable meaning. Up until December 26, 2013, with the passage of the Fiscal Year 2014 National Defense Authorization Act (FY14 NDAA), DoD victims’ rights were not written into the Manual for Courts- Martial; they did not give victims standing to make a statement to the court; they did not give victims power to deny interviews with defense attorneys; they did not give victims a right to be heard at many proceedings; and as a result, in many cases, these so-called victims’ rights did not afford victims the day in court that they not only deserved, but that justice required. Although the FY14 NDAA provides measures to remedy this imbalance, it does not go far enough. This article proposes a set of legal rights that would move the DoD further along on a path to correct the imbalance a victim suffers when injected into the military courts-martial process. These proposed rights have all been recognized in either state constitutions, legal precedent, or legislative act. Although these proposed victim rights cut against time honored DoD tradition, they are necessary, as the media continues to identify that the military system, while fair, has room for improvement, especially when it comes to handling sexual assault cases and particularly in addressing the fact that victims in the military system feel they lack power and a voice. This set of proposed legal rights offers that back to them, while ensuring the constitutional rights of the accused are protected. [ABSTRACT FROM AUTHOR] AB - Copyright of Virginia Journal of Social Policy & the Law is the property of Virginia Journal of Social Policy & the Law and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEXUAL assault -- Law & legislation KW - SEX crimes KW - COURTS-martial & courts of inquiry KW - DEFENSE attorneys KW - LEGAL rights KW - UNITED States KW - LAW & legislation KW - UNITED States. Dept. of Defense N1 - Accession Number: 97314999; Thompson, Greg J. 1; Affiliation: 1: United States Air Force Judge Advocate; Source Info: 2014, Vol. 21 Issue 3, p423; Subject Term: SEXUAL assault -- Law & legislation; Subject Term: SEX crimes; Subject Term: COURTS-martial & courts of inquiry; Subject Term: DEFENSE attorneys; Subject Term: LEGAL rights; Subject Term: UNITED States; Subject Term: LAW & legislation; Company/Entity: UNITED States. Dept. of Defense; Number of Pages: 48p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97314999&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2014-42072-002 AN - 2014-42072-002 AU - Carretta, Thomas R. AU - Teachout, Mark S. AU - Ree, Malcolm James AU - Barto, Erica L. AU - King, Raymond E. AU - Michaels, Charles F. T1 - Consistency of the relations of cognitive ability and personality traits to pilot training performance. JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 2014/10// VL - 24 IS - 4 SP - 247 EP - 264 CY - United Kingdom PB - Taylor & Francis SN - 1050-8414 SN - 1532-7108 AD - Carretta, Thomas R., Wright-Patterson AFB, AFMC 711th HPW, 2210 8th Street, Area B, Bldg. 146, Room 122, Wright-Patterson AFB, OH, US, 45433-7511 N1 - Accession Number: 2014-42072-002. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Carretta, Thomas R.; Air Force Research Laboratory, Wright-Patterson Air Force Base, Wright-Patterson AFB, OH, US. Other Publishers: Lawrence Erlbaum. Release Date: 20141208. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Cognitive Ability; Military Personnel; Military Training; Personality Traits. Minor Descriptor: Ability; Job Performance. Classification: Professional Education & Training (3410). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Wechsler Adult Intelligence Scale–Revised; Full-Scale Intelligence Quotient; Multidimensional Aptitude Battery-II; Revised NEO Personality Inventory DOI: 10.1037/t03907-000. Methodology: Empirical Study; Quantitative Study. Page Count: 18. Issue Publication Date: Oct, 2014. Copyright Statement: Taylor & Francis Group, LLC. 2014. AB - The predictive validity of cognitive ability and personality traits was examined in large samples of U.S. Air Force pilot trainees. Criterion data were collected between 1995 and 2008 from 4 training bases across 3 training tracks. Analyses also examined consistency in pilot aptitude and training outcomes. Results were consistent with previous research indicating cognitive ability is the best predictor of pilot training performance. There were few differences across training tracks, bases, and years, and none was large. Overall, results illustrated the consistency of the quality of pilot trainees as assessed by cognitive ability and personality trait measures, and the consistency of these measures in predicting training performance over time. This consistency results in a more stable training system, enabling greater efficiency and effectiveness. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - cognitive ability KW - personality traits KW - pilot training performance KW - pilot aptitude KW - 2014 KW - Aircraft Pilots KW - Cognitive Ability KW - Military Personnel KW - Military Training KW - Personality Traits KW - Ability KW - Job Performance KW - 2014 DO - 10.1080/10508414.2014.949200 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-42072-002&site=ehost-live&scope=site UR - Thomas.Carretta@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-06301-002 AN - 2015-06301-002 AU - Mansour, Alfred AU - Bowyer, Susan M. AU - Richard, Annette E. AU - Moran, John E. AU - Erdodi, Laszlo A. AU - Olszewski, Amy AU - Pawluk, Lesley AU - Jacobson, Daniel AU - Vogt, Kelly AU - Moore, Aimee M. AU - Lajiness-O'Neill, Renée T1 - Magnetoencephalography coherence source imaging in dyslexia: Activation of working memory pathways. JF - Psychology JO - Psychology JA - Psychology (Irvine) Y1 - 2014/10// VL - 5 IS - 16 SP - 1879 EP - 1910 CY - US PB - Scientific Research Publishing, Inc. SN - 2152-7180 SN - 2152-7199 AD - Mansour, Alfred N1 - Accession Number: 2015-06301-002. Partial author list: First Author & Affiliation: Mansour, Alfred; Department of Psychology, Eastern Michigan University, Ypsilanti, MI, US. Release Date: 20150629. Correction Date: 20170302. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Dyslexia; Short Term Memory. Minor Descriptor: Learning Disabilities; Learning Disorders; Magnetoencephalography; Neural Networks; Reading Disabilities. Classification: Learning Disorders (3253). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Visual Working Memory Test; Spatial Working Memory DOI: 10.1037/t05447-000; Wechsler Abbreviated Scale of Intelligence DOI: 10.1037/t15170-000. Methodology: Brain Imaging; Empirical Study; Quantitative Study. References Available: Y. Page Count: 32. Issue Publication Date: Oct, 2014. Publication History: Accepted Date: Sep 29, 2014; Revised Date: Sep 5, 2014; First Submitted Date: Aug 13, 2014. Copyright Statement: This work is licensed under the Creative Commons Attribution International License (CC BY). Authors and Scientific Research Publishing Inc. 2014. AB - This study investigates the functional connectivity of neuronal networks critical for working memory in individuals with dyslexia by means of magnetoenchephalographic (MEG) coherence imaging. Individuals with dyslexia showed an early onset of activation in anterior cortical regions (precentral gyrus and the superior frontal gyrus), which differed from controls where activation initiated in posterior cortical regions (supramarginal gyrus and superior temporal gyrus). Further, individuals with dyslexia showed lower brain activity in the right superior temporal gyrus and right middle temporal gyrus than controls during a spatial working memory (SWM) task. In contrast, during a verbal working memory (VWM) task, individuals with dyslexia showed lower activity in the right insular cortex and right superior temporal gyrus and higher, likely compensatory, activity in the right fusiform gyrus, left parahippocampal gyrus, and left precentral gyrus. When performing a SWM task, individuals with dyslexia showed significantly lower coherent activity and synchronization in 1) right frontal connectivity, 2) right fronto-temporal connectivity, 3) left and right frontal connectivity, 4) left temporal and right frontal connectivity, and 5) left occipital and right frontal connectivity. MEG coherence source imaging (CSI) by frequency bands showed lower mean coherence values in individuals with dyslexia compared to controls for each frequency range during the SWM task. In contrast, during the VWM task, individuals with dyslexia showed higher coherent low frequency (3-15 Hz) and lower coherent high frequency (30-45 Hz) synchronization than control subjects. Logistic regression of coherent activity by group membership was significant, with an overall predictive success of 84.4% (88.9% for controls and 77.8% for dyslexia). Coherence between the right lateral orbitofrontal and middle orbitofrontal gyri pair substantially contributed to group membership. The results suggest a pattern of aberrant connectivity as evidenced by the early onset and reliance on prefrontal cortical areas, the differential activation of fronto-temporal brain systems, and an altered pattern of functional connectivity in the frontotemporal pathways mediating these behaviors. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - Dyslexia KW - Reading Disorder KW - Learning Disorder KW - Magnetoencephalography KW - Functional Brain Imaging KW - 2014 KW - Dyslexia KW - Short Term Memory KW - Learning Disabilities KW - Learning Disorders KW - Magnetoencephalography KW - Neural Networks KW - Reading Disabilities KW - 2014 DO - 10.4236/psych.2014.516193 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-06301-002&site=ehost-live&scope=site UR - rlajines@gmail.com UR - amansour@emich.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Harvey, Benjamin G. AU - Guenthner, Andrew J. AU - Yandek, Gregory R. AU - Cambrea, Lee R. AU - Meylemans, Heather A. AU - Baldwin, Lawrence C. AU - Reams, Josiah T. T1 - Synthesis and characterization of a renewable cyanate ester/polycarbonate network derived from eugenol. JO - Polymer JF - Polymer Y1 - 2014/09/26/ VL - 55 IS - 20 M3 - Article SP - 5073 EP - 5079 SN - 00323861 AB - A homogenous polycarbonate/cyanate ester network has been prepared from a renewable, eugenol-derived bisphenol. The pure polycarbonate exhibited a T g of 71 °C, M n = 8360, and polydispersity of 1.88. An 80:20 blend of cyanate ester: polycarbonate was prepared and thermally cured. The presence of the polycarbonate had no significant effect on the cure behavior of the cyanate ester. Small Angle Laser Light Scattering (SALLS) and DSC were used to analyze the blend and no phase separation was observed either during or after cure, suggesting that a homogenous network was generated. TMA of the resulting composite material revealed a single T g of 132 °C (tan δ ), roughly 55 °C lower than the T g of the pure polycyanurate and 60 °C higher than the polycarbonate. A solvent extraction study showed that the polycarbonate could be quantitatively separated from the thermoset matrix after cure. This result proved that no chemical grafting occured under the cure conditions employed. The excellent miscibility of the polycarbonate and cyanate ester coupled with the efficient cure of the blend to a homogenous network suggests that these types of blends may have applications for fabrication of toughened composite structures. [ABSTRACT FROM AUTHOR] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CYANATES KW - THERMOSETTING composites KW - POLYCARBONATES KW - EUGENOL KW - BISPHENOLS KW - LIGHT -- Scattering KW - COMPOSITE materials KW - Cyanate ester KW - Homogenous network KW - Renewable polymer N1 - Accession Number: 98401849; Harvey, Benjamin G. 1; Email Address: benjamin.g.harvey@navy.mil Guenthner, Andrew J. 2 Yandek, Gregory R. 2 Cambrea, Lee R. 1 Meylemans, Heather A. 1 Baldwin, Lawrence C. 1 Reams, Josiah T. 3; Affiliation: 1: US NAVY, NAWCWD, Research Department, Chemistry Division, China Lake, CA 93555, USA 2: Air Force Research Laboratory, Rocket Propulsion Division, Edwards AFB, CA 93524, USA 3: ERC, Inc., Air Force Research Laboratory, Rocket Propulsion Division, Edwards AFB, CA 93524, USA; Source Info: Sep2014, Vol. 55 Issue 20, p5073; Subject Term: CYANATES; Subject Term: THERMOSETTING composites; Subject Term: POLYCARBONATES; Subject Term: EUGENOL; Subject Term: BISPHENOLS; Subject Term: LIGHT -- Scattering; Subject Term: COMPOSITE materials; Author-Supplied Keyword: Cyanate ester; Author-Supplied Keyword: Homogenous network; Author-Supplied Keyword: Renewable polymer; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.polymer.2014.08.034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98401849&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wie, Jeong Jae AU - Wang, David H. AU - Lee, Kyung Min AU - Tan, Loon-Seng AU - White, Timothy J. T1 - Molecular Engineering of Azobenzene-FunctionalizedPolyimides To Enhance Both Photomechanical Work and Motion. JO - Chemistry of Materials JF - Chemistry of Materials Y1 - 2014/09/23/ VL - 26 IS - 18 M3 - Article SP - 5223 EP - 5230 SN - 08974756 AB - Photomechanicaleffects in polymeric materials directly convertinput photonic energy into a macroscopic mechanical output. The photoinitiatedmechanical output of these materials is typically dominated by classicalmechanics, primarily derived from the material stiffness and samplegeometry. Accordingly, large magnitude shape change (e.g., motion)is typically traded for large magnitude force generation. Here, wereport on the systematic preparation and comparison of photomechanicaleffects in a set of isomerically varied linear and cross-linked azobenzene-functionalizedmaterials that demonstrate the critical role of segmental mobility(evident in the magnitude of the β-transition) to assimilatethe typically exclusive properties of large force generation and largeshape change in a single material. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemistry of Materials is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AZOBENZENE KW - POLYIMIDES KW - PHOTOMECHANICAL processes KW - ISOMERIZATION KW - CROSSLINKED polymers KW - AZO compounds N1 - Accession Number: 98490126; Wie, Jeong Jae 1 Wang, David H. 1 Lee, Kyung Min 1 Tan, Loon-Seng 1 White, Timothy J. 1; Affiliation: 1: Materials & ManufacturingDirectorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7750, United States; Source Info: Sep2014, Vol. 26 Issue 18, p5223; Subject Term: AZOBENZENE; Subject Term: POLYIMIDES; Subject Term: PHOTOMECHANICAL processes; Subject Term: ISOMERIZATION; Subject Term: CROSSLINKED polymers; Subject Term: AZO compounds; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98490126&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brieland-Shoultz, Anna AU - Park, Sei Jin AU - Bedewy, Mostafa AU - Tawfick, Sameh AU - Hart, A. John AU - Maschmann, Matthew R. AU - Baur, Jeffery W. T1 - Scaling the Stiffness, Strength, and Toughness of Ceramic-Coated Nanotube Foams into the Structural Regime. JO - Advanced Functional Materials JF - Advanced Functional Materials Y1 - 2014/09/20/ VL - 24 IS - 36 M3 - Article SP - 5728 EP - 5735 SN - 1616301X AB - Natural materials such as bone and tooth achieve precisely tuned mechanical and interfacial properties by varying the concentration and orientation of their nanoscale constituents. However, the realization of such control in engineered foams is limited by manufacturing-driven tradeoffs among the size, order, and dispersion uniformity of the building blocks. It is demonstrated how to manufacture nanocomposite foams with precisely controllable mechanical properties via aligned carbon nanotube (CNT) growth followed by atomic layer deposition (ALD). By starting with a low density CNT forest and varying the ALD coating thickness, we realize predictable ≈1000-fold control of Young's modulus (14 MPa to 20 GPa, where E ∼ ρ2.8), ultimate compressive strength (0.8 MPa to 0.16 GPa), and energy absorption (0.4 to 400 J cm-3). Owing to the continuous, long CNTs within the ceramic nanocomposite, the compressive strength and toughness of the new material are 10-fold greater than commercially available aluminum foam over the same density range. Moreover, the compressive stiffness and strength equal that of compact bone at 10% lower density. Along with emerging technologies for scalable patterning and roll-to-roll manufacturing and lamination of CNT films, coated CNT foams may be especially suited to multifunctional applications such as catalysis, filtration, and thermal protection. [ABSTRACT FROM AUTHOR] AB - Copyright of Advanced Functional Materials is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes -- Synthesis KW - RESEARCH KW - NANOCOMPOSITE materials -- Manufacture KW - ATOMIC layer deposition KW - CARBON foams KW - CATALYSIS KW - carbon nanotube KW - ceramic KW - foam KW - mechanics KW - nanocomposite N1 - Accession Number: 98372114; Brieland-Shoultz, Anna 1 Park, Sei Jin 1 Bedewy, Mostafa 1 Tawfick, Sameh 1,2 Hart, A. John 2 Maschmann, Matthew R. 3 Baur, Jeffery W. 3; Affiliation: 1: Department of Mechanical Engineering, University of Michigan 2: Department of Mechanical Engineering, Massachusetts Institute of Technology 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright Patterson Air Force Base; Source Info: Sep2014, Vol. 24 Issue 36, p5728; Subject Term: CARBON nanotubes -- Synthesis; Subject Term: RESEARCH; Subject Term: NANOCOMPOSITE materials -- Manufacture; Subject Term: ATOMIC layer deposition; Subject Term: CARBON foams; Subject Term: CATALYSIS; Author-Supplied Keyword: carbon nanotube; Author-Supplied Keyword: ceramic; Author-Supplied Keyword: foam; Author-Supplied Keyword: mechanics; Author-Supplied Keyword: nanocomposite; Number of Pages: 8p; Document Type: Article L3 - 10.1002/adfm.201400851 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98372114&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wiebe, R. AU - Spottswood, S.M. T1 - Co-existing responses and stochastic resonance in post-buckled structures: A combined numerical and experimental study. JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2014/09/14/ VL - 333 IS - 19 M3 - Article SP - 4682 EP - 4694 SN - 0022460X AB - Abstract: Much of what is known about co-existing responses in nonlinear systems under both deterministic and random dynamic loading is limited to phenomenological investigations of discrete systems, most commonly, the Duffing equation. From these results alone, it is difficult to extrapolate the behavior of the distributed nonlinear systems more commonly seen in real structures such as buckled beams and curved panels. This is because, beyond the simple increase in dimension, real systems bring with them imperfections and more complex forms of energy dissipation. The possibility of co-existing responses, particularly in the case of simultaneous “safe” and “unsafe” solutions (e.g. snap-through and non-snap-through), poses potential problems for engineers as it multiplies the workload, since one must be very careful to ensure that a particular simulation or experiment has captured the most critical response. Even in the case where random forces dominate the overall loading of a system, a situation in which one might anticipate an equally random response, a very small harmonic component can have an influence beyond its proportion. This effect, known as stochastic resonance, is quite counterintuitive to the analyst more familiar with linear systems where the principles of superposition and scalar multiplication of solutions make this impossible. In this paper, the effect of the damping and noise level on the number of co-existing responses in nonlinear systems is investigated. Stochastic resonance is also demonstrated, first with a double-well Duffing oscillator, and then it is shown to exist experimentally, we believe for the first time, on a macroscopic structure, that being, an (imperfect) buckled beam. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STOCHASTIC analysis KW - BUCKLING (Mechanics) KW - STRUCTURAL engineering KW - NUMERICAL analysis KW - LOADS (Mechanics) KW - ENERGY dissipation N1 - Accession Number: 96406282; Wiebe, R. 1; Email Address: rwiebe@co.utcdayton.com Spottswood, S.M. 1; Affiliation: 1: Structural Sciences Center, Air Force Research Laboratory, WPAFB, OH 45433, United States; Source Info: Sep2014, Vol. 333 Issue 19, p4682; Subject Term: STOCHASTIC analysis; Subject Term: BUCKLING (Mechanics); Subject Term: STRUCTURAL engineering; Subject Term: NUMERICAL analysis; Subject Term: LOADS (Mechanics); Subject Term: ENERGY dissipation; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.jsv.2014.04.055 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96406282&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Islam, A. E. AU - Nikolaev, P. AU - Amama, P. B. AU - Saber, S. AU - Zakharov, D. AU - Huffman, D. AU - Erford, M. AU - Sargent, G. AU - Semiatin, S. L. AU - Stach, E. A. AU - Maruyama, B. T1 - Engineering the Activity and Lifetime of HeterogeneousCatalysts for Carbon Nanotube Growth via Substrate Ion Beam Bombardment. JO - Nano Letters JF - Nano Letters Y1 - 2014/09/10/ VL - 14 IS - 9 M3 - Article SP - 4997 EP - 5003 SN - 15306984 AB - We demonstrate that argon ion bombardment of single crystal sapphireleads to the creation of substrates that support the growth of verticallyaligned carbon nanotubes from iron catalysts with a density, height,and quality equivalent to those grown on conventional, disorderedalumina supports. We quantify the evolution of the catalyst usinga range of surface characterization techniques and demonstrate theability to engineer and pattern the catalyst support through controlof ion beam bombardment parameters. [ABSTRACT FROM AUTHOR] AB - Copyright of Nano Letters is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - HETEROGENEOUS catalysis KW - SUBSTRATES (Materials science) KW - ION beams KW - CRYSTAL growth KW - IRON catalysts KW - BOMBARDMENT N1 - Accession Number: 98249610; Islam, A. E. 1 Nikolaev, P. 1 Amama, P. B. 1 Saber, S. 1 Zakharov, D. 1 Huffman, D. 1 Erford, M. 1 Sargent, G. 1 Semiatin, S. L. 1 Stach, E. A. 1 Maruyama, B. 1; Affiliation: 1: †Materials andManufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States; Source Info: Sep2014, Vol. 14 Issue 9, p4997; Subject Term: CARBON nanotubes; Subject Term: HETEROGENEOUS catalysis; Subject Term: SUBSTRATES (Materials science); Subject Term: ION beams; Subject Term: CRYSTAL growth; Subject Term: IRON catalysts; Subject Term: BOMBARDMENT; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98249610&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kettwich, Sharon C. AU - Kappagantula, Keerti AU - Kusel, Bradley S. AU - Avjian, Eryn K. AU - Danielson, Seth T. AU - Miller, Hannah A. AU - Pantoya, Michelle L. AU - Iacono, Scott T. T1 - Thermal investigations of nanoaluminum/perfluoropolyether core–shell impregnated composites for structural energetics. JO - Thermochimica Acta JF - Thermochimica Acta Y1 - 2014/09/10/ VL - 591 M3 - Article SP - 45 EP - 50 SN - 00406031 AB - An operationally simple blendable approach to producing structural energetic composites loaded with nanoaluminum (n-Al) particles coated by perfluoropolyethers (PFPE) yields shape moldable, structurally flexible materials. The epoxide system of poly(ethylene glycol) diglycidyl ether (PEG-DGE) and triethylenetetramine (TETA) are partially cured with an energetic blend of n-Al/PFPE core–shell particles and mechanically mixed and produce a homogeneous composite material whereby energetic potency is indefinitely shelf-stable. The composites are characterized by a suite of thermal techniques using DSC, TGA, and SDT in addition to open flame burn rate and heat of combustion measurements. This composite system may further expand the use of energetic materials with tailorable exothermic properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Thermochimica Acta is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOCHEMISTRY KW - NANOSTRUCTURED materials KW - POLYETHERS KW - COMPOSITE materials KW - STRUCTURAL analysis (Engineering) KW - POLYETHYLENE glycol KW - Composite materials KW - Energetic materials KW - Epoxides KW - Hybrid materials KW - Nanoparticles N1 - Accession Number: 97585903; Kettwich, Sharon C. 1; Email Address: ckettwich@gmail.com Kappagantula, Keerti 2 Kusel, Bradley S. 1 Avjian, Eryn K. 1 Danielson, Seth T. 1 Miller, Hannah A. 1 Pantoya, Michelle L. 2 Iacono, Scott T. 1; Email Address: scott.iacono@usafa.edu; Affiliation: 1: Department of Chemistry and Chemistry Research Center, United States Air Force Academy, 2355 Fairchild Drive, Suite 2N225, Colorado Springs, CO 80840, USA 2: Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409, USA; Source Info: Sep2014, Vol. 591, p45; Subject Term: THERMOCHEMISTRY; Subject Term: NANOSTRUCTURED materials; Subject Term: POLYETHERS; Subject Term: COMPOSITE materials; Subject Term: STRUCTURAL analysis (Engineering); Subject Term: POLYETHYLENE glycol; Author-Supplied Keyword: Composite materials; Author-Supplied Keyword: Energetic materials; Author-Supplied Keyword: Epoxides; Author-Supplied Keyword: Hybrid materials; Author-Supplied Keyword: Nanoparticles; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.tca.2014.07.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97585903&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 107799708 T1 - Performance of portable ventilators at altitude. AU - Blakeman, Thomas AU - Britton, Tyler AU - Rodriquez Jr, Dario AU - Branson, Richard Y1 - 2014/09/03/Sep2014 Supplement II N1 - Accession Number: 107799708. Language: English. Entry Date: 20150123. Revision Date: 20150712. Publication Type: Journal Article; research. Supplement Title: Sep2014 Supplement II. Journal Subset: Biomedical; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Critical Care; Emergency Care. NLM UID: 101570622. KW - Altitude KW - Ventilators, Mechanical -- Standards KW - Human KW - Models, Biological KW - Clinical Information Systems -- Standards KW - Positive End-Expiratory Pressure KW - Tidal Volume SP - S151 EP - 5 JO - Journal of Trauma & Acute Care Surgery JF - Journal of Trauma & Acute Care Surgery JA - J TRAUMA ACUTE CARE SURG VL - 77 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - BACKGROUND: Aeromedical transport of critically ill patients requires continued, accurate performance of equipment at altitude. Changes in barometric pressure can affect the performance of mechanical ventilators calibrated for operation at sea level. Deploying ventilators that can maintain a consistent tidal volume (VT) delivery at various altitudes is imperative for lung protection when transporting wounded war fighters to each echelon of care. METHODS: Three ventilators (Impact 731, Hamilton T1, and CareFusion Revel) were tested at pediatric (50 and 100 mL) and adult (250-750 mL) tidal VTs at 0 and 20 cm H2O positive end expiratory pressure and at inspired oxygen of 0.21 and 1.0. Airway pressure, volume, and flow were measured at sea level as well as at 8,000, 16,000, and 22,000 ft (corresponding to barometric pressures of 760, 564, 412, and 321 mm Hg) using a calibrated pneumotachograph connected to a training test lung in an altitude chamber. Set VT and delivered VT as well as changes in VT at each altitude were compared by t test. RESULTS: The T1 delivered VT within 10% of set VT at 8,000 ft. The mean VT was less than set VT at sea level as a result of circuit compressible volume with the Revel and the 731. Changes in VT varied widely among the devices at sea level and at altitude. Increasing altitudes resulted in larger VT than set for the Revel and the T1. The 731 compensated for changes in altitude delivered VT within 10% at the adult settings at all altitudes. CONCLUSION: Altitude compensation is an active software algorithm. Only the 731 actively accounts for changes in barometric pressure to maintain the set VT at all tested altitudes. SN - 2163-0755 AD - From the University of Cincinnati (T.Bl., R.B.), Cincinnati, Ohio; and United States Air Force (T.Br., D.R.J.). U2 - PMID: 25159349. DO - 10.1097/TA.0000000000000379 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107799708&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Monroe, A.T. AU - Reddy, S.C. AU - Peddada, A.V. T1 - Dorsal Vagal Complex of the Brainstem: Conformal Avoidance to Reduce Nausea. JO - International Journal of Radiation Oncology, Biology, Physics JF - International Journal of Radiation Oncology, Biology, Physics Y1 - 2014/09/02/Sep2014 Supplement VL - 90 IS - 1 M3 - Article SP - S550 EP - S550 SN - 03603016 KW - HEAD & neck cancer -- Treatment KW - BRAIN stem KW - NAUSEA KW - INTENSITY modulated radiotherapy KW - RADIOTHERAPY treatment planning KW - RADIATION -- Dosage N1 - Accession Number: 108320738; Monroe, A.T. 1 Reddy, S.C. 2 Peddada, A.V. 3; Affiliation: 1: Penrose Cancer Center, Colorado Springs, CO 2: US Air Force Academy, Colorado Springs, CO 3: Penrose Hospital, Colorado Springs, CO; Source Info: Sep2014 Supplement, Vol. 90 Issue 1, pS550; Subject Term: HEAD & neck cancer -- Treatment; Subject Term: BRAIN stem; Subject Term: NAUSEA; Subject Term: INTENSITY modulated radiotherapy; Subject Term: RADIOTHERAPY treatment planning; Subject Term: RADIATION -- Dosage; Number of Pages: 1p; Document Type: Article L3 - 10.1016/j.ijrobp.2014.05.1668 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108320738&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bevilacqua, Riccardo AU - Lovell, Thomas Alan T1 - Analytical guidance for spacecraft relative motion under constant thrust using relative orbit elements. JO - Acta Astronautica JF - Acta Astronautica Y1 - 2014/09// VL - 102 M3 - Article SP - 47 EP - 61 SN - 00945765 AB - Proximity control of modern nano-spacecraft often relies on low and discrete thrust engines that are characterized by low consumption, and generate on-off force profiles. New guidance solutions must take into account the nature of this type of orbital engines. This paper introduces novel analytical guidance solutions for spacecraft relative motion considering continuous, on-off thrust, and using relative orbit elements as a geometrical representation of the dynamics. The solutions provide the relative state vector at any given time, accommodating any thrust magnitude along the three directions of the relative frame, as well as generic activation times and durations. Relative orbit elements geometrically interpret key aspects of the relative motion, including for example, the relative ellipse size, and the evolution of its center in time. The new solutions provide the guidance designer with a direct visualization of the thrust effects on the relative motion geometry, offering new possibilities for analytical guidance in the presence of continuous thrust engines, such as low thrust engines on nano-spacecraft. The paper presents the analytical solutions, and tests their effectiveness using a sample thrust profile based on input-shaping, previously developed by one of the authors using classical Cartesian coordinates. The use of relative orbit elements shows substantial benefits and added simplicity with respect to Cartesian-based approaches, holding the promise for straightforward onboard spacecraft implementation. The software developed for this research will be available open source, to be used by spacecraft guidance designers as trajectory design tool. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Astronautica is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles KW - RELATIVE motion KW - THRUST KW - DYNAMICAL systems KW - CARTESIAN coordinates KW - Analytical guidance KW - Input-shaping KW - On-off thrust KW - Relative orbit elements KW - Spacecraft relative motion N1 - Accession Number: 97314339; Bevilacqua, Riccardo 1; Email Address: bevilr@rpi.edu Lovell, Thomas Alan 2; Affiliation: 1: Mechanical, Aerospace, and Nuclear Engineering Department, Rensselaer Polytechnic Institute, 110 8th street, Troy, NY 12180, USA 2: Research Aerospace Engineer, Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, NM, USA; Source Info: Sep2014, Vol. 102, p47; Subject Term: SPACE vehicles; Subject Term: RELATIVE motion; Subject Term: THRUST; Subject Term: DYNAMICAL systems; Subject Term: CARTESIAN coordinates; Author-Supplied Keyword: Analytical guidance; Author-Supplied Keyword: Input-shaping; Author-Supplied Keyword: On-off thrust; Author-Supplied Keyword: Relative orbit elements; Author-Supplied Keyword: Spacecraft relative motion; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.actaastro.2014.05.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97314339&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Quarrie, L. T1 - Theoretical simulations of protective thin film Fabry-Pōrot filters for integrated optical elements of diode pumped alkali lasers (DPAL). JO - AIP Advances JF - AIP Advances Y1 - 2014/09// VL - 4 IS - 9 M3 - Article SP - 1 EP - 11 SN - 21583226 AB - The lifetime of Diode-Pumped Alkali Lasers (DPALs) is limited by damage initiated by reaction of the glass envelope of its gain medium with rubidium vapor. Rubidium is absorbed into the glass and the rubidium cations diffuse through the glass structure, breaking bridging Si-O bonds. A damage-resistant thin film was developed enhancing high-optical transmission at natural rubidium resonance input and output laser beam wavelengths of 780 nm and 795 nm, while protecting the optical windows of the gain cell in a DPAL. The methodology developed here can be readily modified for simulation of expected transmission performance at input pump and output laser wavelengths using different combination of thin film materials in a DPAL. High coupling efficiency of the light through the gas cell was accomplished by matching the air-glass and glass-gas interfaces at the appropriate wavelengths using a dielectric stack of high and low index of refraction materials selected to work at the laser energies and protected from the alkali metal vapor in the gain cell. Thin films as oxides of aluminum, zirconium, tantalum, and silicon were selected allowing the creation of Fabry-Perot optical filters on the optical windows achieving close to 100% laser transmission in a solid optic combination of window and highly reflective mirror. This approach allows for the development of a new whole solid optic laser. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Advances is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS -- Research KW - RUBIDIUM KW - RESEARCH KW - THIN films -- Research KW - DIELECTRIC devices KW - WAVELENGTHS N1 - Accession Number: 98680200; Quarrie, L. 1,2; Email Address: Lindsay.Quarrie@l-3com.com; Affiliation: 1: New Mexico Institute of Mining and Technology, Department of Materials Engineering, 801 LeRoy Place, Socorro, NM 87801, United States 2: Air Force Research Laboratory, AFRL/RDLC Laser CoE, 3550 Aberdeen Avenue SE, Kirtland AFB, NM 87117-5776, United States; Source Info: 2014, Vol. 4 Issue 9, p1; Subject Term: LASERS -- Research; Subject Term: RUBIDIUM; Subject Term: RESEARCH; Subject Term: THIN films -- Research; Subject Term: DIELECTRIC devices; Subject Term: WAVELENGTHS; Number of Pages: 11p; Document Type: Article L3 - 10.1063/1.4895108 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98680200&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davis, Robert D. T1 - Forward Arming and Refueling Points for Fighter Aircraft. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2014/09//Sep/Oct2014 VL - 28 IS - 5 M3 - Article SP - 5 EP - 28 PB - Superintendent of Documents SN - 1555385X AB - The article offers information related to power projection in U.S. Department of Defense. Topics discussed include the role of U.S. Air Force for the department, various factors that must be considered related to power projection including space superiority, intelligence, surveillance, and reconnaissance (ISR), and global strike, and the potential of rapid employment of fighter aircraft through forward arming and refueling points (FARP). KW - MILITARY surveillance KW - RECONNAISSANCE operations KW - MILITARY airplanes KW - AIRPLANES -- Refueling KW - UNITED States. Dept. of Defense KW - UNITED States. Air Force N1 - Accession Number: 97896108; Davis, Robert D. 1; Affiliation: 1: executive officer, commander of Air Combat Command, Joint Base Langley-Eustis, Virginia; Source Info: Sep/Oct2014, Vol. 28 Issue 5, p5; Subject Term: MILITARY surveillance; Subject Term: RECONNAISSANCE operations; Subject Term: MILITARY airplanes; Subject Term: AIRPLANES -- Refueling; Company/Entity: UNITED States. Dept. of Defense Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 488190 Other Support Activities for Air Transportation; NAICS/Industry Codes: 928110 National Security; Number of Pages: 24p; Illustrations: 4 Color Photographs, 2 Charts, 1 Graph, 2 Maps; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97896108&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carter, Campbell AU - Hammack, Stephen AU - Lee, Tonghun T1 - High-speed planar laser-induced fluorescence of the CH radical using the $$C^{ 2} \varSigma ^{ + } {-}X^{ 2} \varPi \left( {0,0} \right)$$ band. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2014/09// VL - 116 IS - 3 M3 - Article SP - 515 EP - 519 PB - Springer Science & Business Media B.V. SN - 09462171 AB - The potential for kHz-rate or high- speed planar laser-induced fluorescence (PLIF) of the Methylidyne (CH) radical using its $$C^{ 2} \varSigma ^{ + } {-}X^{ 2} \varPi$$ ( v′ = 0, v′′ = 0) band was investigated. We show that due to its strength and the excitation wavelength (~314 nm), which is conveniently generated by a dye laser operating with a red dye, the C- X(0,0) band is a good choice for CH LIF studies wherein suppression of background scattering is not required. While interference from polycyclic aromatic hydrocarbons is small, that caused by hydroxyl (OH) can be significant. Nonetheless, the OH lines can be avoided, and we observe good CH image fidelity. Most importantly, we show that due to the favorable properties of the CH C- X band (i.e., good signal strength and convenient wavelength), it can be used for PLIF at kHz acquisition rates using a continuously pulsing laser system. This is demonstrated in laminar and turbulent CH-air flames with a laser system operating at 10 kHz and delivering ~0.2 mJ/pulse at 314 nm. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBYNES KW - PLANAR laser-induced fluorescence KW - RADICALS (Chemistry) KW - POLYCYCLIC aromatic hydrocarbons KW - LAMINAR flow N1 - Accession Number: 97545642; Carter, Campbell 1; Email Address: Campbell.Carter@wpafb.af.mil Hammack, Stephen 2 Lee, Tonghun 2; Affiliation: 1: Air Force Research Laboratory (AFRL/RQHF), 1950 Fifth St. Wright-Patterson AFB 45433 USA 2: Department of Mechanical Science and Engineering, University of Illinois, Urbana 61801 USA; Source Info: Sep2014, Vol. 116 Issue 3, p515; Subject Term: CARBYNES; Subject Term: PLANAR laser-induced fluorescence; Subject Term: RADICALS (Chemistry); Subject Term: POLYCYCLIC aromatic hydrocarbons; Subject Term: LAMINAR flow; Number of Pages: 5p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1007/s00340-014-5899-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97545642&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Pelser, Adam C. T1 - Irrigating Deserts: Thinking with C. S. Lewis about Educating for Emotional Formation. JO - Christian Scholar's Review JF - Christian Scholar's Review Y1 - 2014///Fall2014 VL - 44 IS - 1 M3 - Essay SP - 27 EP - 43 SN - 00172251 AB - An essay is presented on the need for emotional formation as part of moral education. It explains C. S. Lewis' views of emotions in his trilogy of essays in "The Abolition of Man," with insights drawn from philosophy and psychology. It highlights Lewis' warning that an incorrect view of the nature of emotions could ultimately lead to the devolution of human society. It suggests applications of his view of emotions to moral education and spiritual formation in Christian higher education. KW - EMOTIONS (Psychology) KW - MORAL education KW - PSYCHOLOGY & philosophy KW - SPIRITUAL formation KW - CHRISTIAN education KW - LEWIS, C. S. (Clive Staples), 1898-1963 KW - ABOLITION of Man, The (Book) N1 - Accession Number: 99096265; Pelser, Adam C. 1; Affiliation: 1: Assistant Professor of Philosophy, United States Air Force Academy; Source Info: Fall2014, Vol. 44 Issue 1, p27; Subject Term: EMOTIONS (Psychology); Subject Term: MORAL education; Subject Term: PSYCHOLOGY & philosophy; Subject Term: SPIRITUAL formation; Subject Term: CHRISTIAN education; Reviews & Products: ABOLITION of Man, The (Book); People: LEWIS, C. S. (Clive Staples), 1898-1963; Number of Pages: 17p; Document Type: Essay UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99096265&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Richard Moore, L. AU - Gunzelmann, Glenn T1 - An interpolation approach for fitting computationally intensive models. JO - Cognitive Systems Research JF - Cognitive Systems Research Y1 - 2014/09// VL - 29-30 M3 - Article SP - 53 EP - 65 SN - 13890417 AB - Abstract: Computational cognitive modeling has been established as a useful methodology for exploring and validating quantitative theories about human cognitive processing and behavior. In some cases, however, complex models can create challenges for parameter exploration and estimation due to extended execution times and limited computing capacity. To address this challenge, some modelers have turned to intelligent search algorithms and/or large-scale computational resources. For an emerging class of models, epitomized by attempts to predict the time course effects of cognitive moderators, even these techniques may not be sufficient. In this paper, we present a new methodology and associated software that allows modelers to instantiate a model proxy that can quickly interpolate predictions of model performance anywhere within a defined parameter space. The software integrates with the R statistics environment and is compatible with many of the fitting algorithms therein. To illustrate the utility of these capabilities, we describe a case study where we are using the methodology in our own research. [Copyright &y& Elsevier] AB - Copyright of Cognitive Systems Research is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COGNITIVE ability KW - INTERPOLATION KW - SEARCH algorithms KW - COMPUTER algorithms KW - COMPUTER software KW - PARAMETER estimation KW - Cognitive model KW - Cognitive moderator KW - Mathematical model KW - Model proxy N1 - Accession Number: 95389776; Richard Moore, L. 1; Email Address: lrmoorejr@gmail.com Gunzelmann, Glenn 2; Email Address: glenn.gunzelmann@us.af.mil; Affiliation: 1: L3 Communications, 5950 East Sossaman Road, Suite 121, Mesa, AZ 85212, United States 2: Cognitive Models and Agents Branch, Air Force Research Laboratory, 2620 Q St., Building 852, Wright Patterson AFB, OH 45434, United States; Source Info: Sep2014, Vol. 29-30, p53; Subject Term: COGNITIVE ability; Subject Term: INTERPOLATION; Subject Term: SEARCH algorithms; Subject Term: COMPUTER algorithms; Subject Term: COMPUTER software; Subject Term: PARAMETER estimation; Author-Supplied Keyword: Cognitive model; Author-Supplied Keyword: Cognitive moderator; Author-Supplied Keyword: Mathematical model; Author-Supplied Keyword: Model proxy; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.cogsys.2013.09.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95389776&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nordeen, C. AU - Schwer, D. AU - Schauer, F. AU - Hoke, J. AU - Barber, Th. AU - Cetegen, B. T1 - Thermodynamic model of a rotating detonation engine. JO - Combustion, Explosion, & Shock Waves JF - Combustion, Explosion, & Shock Waves Y1 - 2014/09// VL - 50 IS - 5 M3 - Article SP - 568 EP - 577 PB - Springer Science & Business Media B.V. SN - 00105082 AB - The conventional Zel'dovich-von Neumann-Döring (ZND) detonation theory is modified with two-dimensional velocity vectors to account for the performance and steady-state flow features of a rotating detonation engine. The developed analytical model explains many of the steady-state features of the rotating detonation and its thermodynamics. The generation of swirl is shown to be the primary mechanism of energy transfer. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion, Explosion, & Shock Waves is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMODYNAMICS -- Mathematical models KW - TWO-dimensional models KW - STEADY-state flow KW - THERMODYNAMICS KW - EULER equations (Fluid dynamics) KW - TURBINES KW - DETONATION waves KW - continuous detonation KW - Euler turbine equation KW - rotating detonation engine KW - swirl KW - thermodynamic model KW - velocity triangles KW - ZND model N1 - Accession Number: 98837381; Nordeen, C. 1; Email Address: can03005@engr.uconn.edu Schwer, D. 2 Schauer, F. 3 Hoke, J. 4 Barber, Th. 1 Cetegen, B. 1; Affiliation: 1: Mechanical Engineering Department, University of Connecticut, Storrs 06269-3139 USA 2: Naval Research Laboratory Center for Reactive Flow and Dynamical Systems, Washington, DC 20375 USA 3: Air Force Research Laboratory Propulsion Directorate, Wright-Patterson AFB 45433 USA 4: Innovative Scientific Solutions Inc., Dayton USA; Source Info: Sep2014, Vol. 50 Issue 5, p568; Subject Term: THERMODYNAMICS -- Mathematical models; Subject Term: TWO-dimensional models; Subject Term: STEADY-state flow; Subject Term: THERMODYNAMICS; Subject Term: EULER equations (Fluid dynamics); Subject Term: TURBINES; Subject Term: DETONATION waves; Author-Supplied Keyword: continuous detonation; Author-Supplied Keyword: Euler turbine equation; Author-Supplied Keyword: rotating detonation engine; Author-Supplied Keyword: swirl; Author-Supplied Keyword: thermodynamic model; Author-Supplied Keyword: velocity triangles; Author-Supplied Keyword: ZND model; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1134/S0010508214050128 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98837381&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hodge, Michael D. AU - Heller, Eric R. AU - Vetury, Ramakrishna AU - Shealy, Jeffrey B. T1 - Analysis of Time Dependent Electric Field Degradation in AlGaN/GaN HEMTs. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices Y1 - 2014/09// VL - 61 IS - 9 M3 - Article SP - 3145 EP - 3151 SN - 00189383 AB - The authors report on an electrical and optical analysis of AlGaN/GaN HEMTs stressed under high electric field conditions into a state of permanent degradation, evidenced by an increase in OFF-state leakage current and a reduction in breakdown voltage. A method of stress testing AlGaN/GaN HEMTs to voltages close to breakdown while protecting the device from catastrophic failure is presented. Using this stress method, a detailed study was performed to observe device degradation that limits safe operation in the OFF-state. Electrical analysis reveals that quantitatively the Schottky properties of the gate diode are degraded by the stress and suggests a localized defect. An optical analysis confirms localized degradation via electroluminescence (EL) spots on the stressed side of the gate finger. It is shown that the dominant EL site in the degraded device may be observed prior to the application of stress. Finally, it is confirmed that the localized EL emission of the stressed device is the dominant gate leakage path via thermal imaging. These results suggest a method for identifying and understanding the failure mechanisms that limit the safe operating area of GaN HEMTs. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MODULATION-doped field-effect transistors KW - RESEARCH KW - ALUMINUM gallium nitride KW - GALLIUM nitride KW - ELECTROLUMINESCENCE KW - SEMICONDUCTOR device reliability KW - ELECTRIC fields -- Research KW - Aluminum gallium nitride KW - Degradation KW - Electric breakdown KW - Gallium nitride KW - HEMTs KW - Leakage currents KW - Logic gates KW - Schottky diodes KW - semiconductor device reliability KW - Stress KW - transistors N1 - Accession Number: 97616203; Hodge, Michael D. 1 Heller, Eric R. 2 Vetury, Ramakrishna 3 Shealy, Jeffrey B. 3; Affiliation: 1: Department of Electrical and Computer Engineering, University of North Carolina at Charlotte, Charlotte, NC, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA 3: , RF Micro Devices, Charlotte, NC, USA; Source Info: Sep2014, Vol. 61 Issue 9, p3145; Subject Term: MODULATION-doped field-effect transistors; Subject Term: RESEARCH; Subject Term: ALUMINUM gallium nitride; Subject Term: GALLIUM nitride; Subject Term: ELECTROLUMINESCENCE; Subject Term: SEMICONDUCTOR device reliability; Subject Term: ELECTRIC fields -- Research; Author-Supplied Keyword: Aluminum gallium nitride; Author-Supplied Keyword: Degradation; Author-Supplied Keyword: Electric breakdown; Author-Supplied Keyword: Gallium nitride; Author-Supplied Keyword: HEMTs; Author-Supplied Keyword: Leakage currents; Author-Supplied Keyword: Logic gates; Author-Supplied Keyword: Schottky diodes; Author-Supplied Keyword: semiconductor device reliability; Author-Supplied Keyword: Stress; Author-Supplied Keyword: transistors; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TED.2014.2336248 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97616203&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chi-Hao Cheng AU - Liou, Lee L. AU - Lin, David M. AU - Tsui, James B. AU - Heng-Ming Tai T1 - Wideband in-phase/quadrature imbalance compensation using finite impulse response filter. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2014/09// VL - 8 IS - 7 M3 - Article SP - 797 EP - 804 PB - Institution of Engineering & Technology SN - 17518784 AB - The authors proposed an in-phase/quadrature (I/Q) imbalance compensation technique for wideband digital receiver applications. An I/Q channel-based receiver can double the receiver working bandwidth. However, the amplitude/phase imbalance of an imperfect hybrid coupler can generate image signals thus reducing the receiver's instantaneous dynamic range. They developed a finite impulse response filter-based technique to mitigate deleterious effects because of the amplitude/phase imbalance. Both simulations and experiments were conducted to verify validity of the developed algorithm. The simulation and experiment results show that the proposed imbalance mitigation technique can reduce image signal powers by more than 24 dB or down to noise level. A receiver system level simulation is also conducted to demonstrate the practicality of the proposed imbalance mitigation method. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BROADBAND communication systems KW - FINITE impulse response filters (Signal processing) KW - ALGORITHMS KW - ELECTRONIC noise KW - BANDWIDTHS N1 - Accession Number: 97312418; Chi-Hao Cheng 1; Email Address: chengc@miamioh.edu Liou, Lee L. 2 Lin, David M. 2 Tsui, James B. 2 Heng-Ming Tai 3; Affiliation: 1: Department of Electrical and Computer Engineering, Miami University, Oxford, OH, USA 2: Sensor Directorate, US Air Force Research Laboratory, Dayton, OH, USA 3: Department of Electrical Engineering, University of Tulsa, Tulsa, OK, USA; Source Info: 2014, Vol. 8 Issue 7, p797; Subject Term: BROADBAND communication systems; Subject Term: FINITE impulse response filters (Signal processing); Subject Term: ALGORITHMS; Subject Term: ELECTRONIC noise; Subject Term: BANDWIDTHS; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; Number of Pages: 8p; Document Type: Article L3 - 10.1049/iet-rsn.2013.0123 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97312418&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Striebich, Richard C. AU - Smart, Caitlin E. AU - Gunasekera, Thusitha S. AU - Mueller, Susan S. AU - Strobel, Ellen M. AU - McNichols, Brett W. AU - Ruiz, Oscar N. T1 - Characterization of the F-76 diesel and Jet-A aviation fuel hydrocarbon degradation profiles of Pseudomonas aeruginosa and Marinobacter hydrocarbonoclasticus. JO - International Biodeterioration & Biodegradation JF - International Biodeterioration & Biodegradation Y1 - 2014/09// VL - 93 M3 - Article SP - 33 EP - 43 SN - 09648305 AB - To better understand the process of fuel biodeterioration, Jet-A and F-76 diesel fuel were exposed to Pseudomonas aeruginosa, a common fuel contaminant, and Marinobacter hydrocarbonoclasticus, a marine hydrocarbon degrader, and the extent of hydrocarbon decomposition produced by these bacteria determined. Degradation assays containing fuel-minimal media mixtures and bacteria were analyzed by gas chromatography (GC) to discern the consumption of fuel hydrocarbons. Experiments were conducted in closed systems to prevent evaporation of hydrocarbons and allow accurate quantitation. Results indicated that P. aeruginosa preferred to consume mid-range normal alkanes (C12-C18) followed by higher chain n-alkanes (C19-C23). Cycloparaffins were consumed at much lower rates, while aromatic and isoparaffins were not consumed. However, M. hydrocarbonoclasticus showed a different profile with preferential degradation of shorter n-alkanes (C8-C11) and specific aromatic compounds. Both types of bacteria were incapable of degrading branched alkanes. During larger scale bioreactor tests, bacteria were able to degrade similar hydrocarbons. This study clearly demonstrated that the effects of fuel biodeterioration can go well beyond corrosion and filter fouling, with different bacteria metabolizing different fuel hydrocarbons and presenting the possibility for microbes to directly change fuel composition and properties. Results are discussed in light of the use of newer alternative fuels which can have dramatically different hydrocarbon profiles compared to conventional petroleum fuels. [ABSTRACT FROM AUTHOR] AB - Copyright of International Biodeterioration & Biodegradation is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES -- Fuel KW - HYDROCARBONS -- Biodegradation KW - PSEUDOMONAS aeruginosa KW - GAS chromatography KW - ALKANES KW - AROMATIC compounds KW - Alternative fuels KW - Bacteria KW - Biodegradation KW - Biodeterioration KW - Biofuels KW - Biorremediation KW - Diesel KW - F-76 KW - Fuel KW - Gas chromatorgraphy KW - Hydrocarbons KW - Jet fuel KW - Jet-A N1 - Accession Number: 97223524; Striebich, Richard C. 1 Smart, Caitlin E. 2 Gunasekera, Thusitha S. 1 Mueller, Susan S. 1 Strobel, Ellen M. 2 McNichols, Brett W. 2 Ruiz, Oscar N. 2; Email Address: oscar.ruiz@us.af.mil; Affiliation: 1: University of Dayton Research Institute (UDRI), 300 College Park, Dayton, OH 45469-0043, USA 2: Air Force Research Laboratory, Aerospace Systems Directorate, Fuels and Energy Branch, Wright-Patterson AFB, OH 45433, USA; Source Info: Sep2014, Vol. 93, p33; Subject Term: AIRPLANES -- Fuel; Subject Term: HYDROCARBONS -- Biodegradation; Subject Term: PSEUDOMONAS aeruginosa; Subject Term: GAS chromatography; Subject Term: ALKANES; Subject Term: AROMATIC compounds; Author-Supplied Keyword: Alternative fuels; Author-Supplied Keyword: Bacteria; Author-Supplied Keyword: Biodegradation; Author-Supplied Keyword: Biodeterioration; Author-Supplied Keyword: Biofuels; Author-Supplied Keyword: Biorremediation; Author-Supplied Keyword: Diesel; Author-Supplied Keyword: F-76; Author-Supplied Keyword: Fuel; Author-Supplied Keyword: Gas chromatorgraphy; Author-Supplied Keyword: Hydrocarbons; Author-Supplied Keyword: Jet fuel; Author-Supplied Keyword: Jet-A; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ibiod.2014.04.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97223524&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hutson, Alisha L. AU - Jha, Sushant K. AU - Porter, William J. AU - Larsen, James M. T1 - Activation of life-limiting fatigue damage mechanisms in Ti–6Al–2Sn–4Zr–6Mo. JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2014/09// VL - 66 M3 - Article SP - 1 EP - 10 SN - 01421123 AB - Highlights: [•] Fatigue life data were analyzed for bimodal (FCG or initiation-dominated) behavior. [•] Short life populations were observed preferentially under more aggressive conditions. [•] Short lives were consistent with FCP lives, supported by micro-notched tests. [•] Relative sampling of two mechanisms affected accuracy of uni-modal predictions. [•] Crack growth-dominated lives were most readily assessed via electropolished samples. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE KW - AGGRESSION (Psychology) KW - PREDICTION theory KW - FRACTURE mechanics KW - ELECTROLYTIC polishing KW - DATA analysis KW - Fatigue KW - Life prediction KW - Probabilistic analysis KW - Residual stresses KW - Titanium alloys N1 - Accession Number: 96347840; Hutson, Alisha L. 1; Email Address: Alisha.hutson.ctr@us.af.mil Jha, Sushant K. 2 Porter, William J. 1 Larsen, James M. 3; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0020, USA 2: Universal Technology Corporation, 1270 N. Fairfield Road, Dayton, OH 45432, USA 3: US Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Sep2014, Vol. 66, p1; Subject Term: FATIGUE; Subject Term: AGGRESSION (Psychology); Subject Term: PREDICTION theory; Subject Term: FRACTURE mechanics; Subject Term: ELECTROLYTIC polishing; Subject Term: DATA analysis; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Life prediction; Author-Supplied Keyword: Probabilistic analysis; Author-Supplied Keyword: Residual stresses; Author-Supplied Keyword: Titanium alloys; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijfatigue.2014.02.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96347840&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bobko, Philip AU - Barelka, Alex AU - Hirshfield, Leanne AU - Lyons, Joseph T1 - Invited Article: The Construct of Suspicion and How It Can Benefit Theories and Models in Organizational Science. JO - Journal of Business & Psychology JF - Journal of Business & Psychology Y1 - 2014/09// VL - 29 IS - 3 M3 - Article SP - 335 EP - 342 SN - 08893268 AB - This article introduces the construct of suspicion to researchers in business and applied psychology, provides a literature-based definition of state suspicion and an initial self-report measure of that construct, and encourages research on this important topic. The construct of suspicion is under-researched in business and applied psychology, yet has wide application for both researchers and practitioners. These applications occur across many content domains (e.g., consumer psychology, leadership), as well as at varying levels of analysis (e.g., individual, group, organizational). To motivate research on this construct, possible studies are delineated/suggested by way of example and a Call for Papers also appears. The organizational sciences will benefit from the incorporation of suspicion-based constructs in theoretical and explanatory models. Organizations might also function more efficiently because of these efforts -as decision makers assess, understand, and better manage appropriate levels of suspicion in their employees and work groups. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Business & Psychology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDUSTRIAL psychology -- Research KW - APPLIED psychology -- Research KW - SUSPICION KW - RESEARCH KW - DECISION making KW - TEAMS in the workplace -- Research KW - EMPLOYEES KW - Call for papers KW - Special issue KW - Suspicion N1 - Accession Number: 97411911; Bobko, Philip 1; Email Address: pbobko@gettysburg.edu Barelka, Alex 2; Email Address: ajbarel@ilstu.edu Hirshfield, Leanne 3; Email Address: lmhirshf@syr.edu Lyons, Joseph 4; Email Address: joseph.lyons.6@us.af.mil; Affiliation: 1: Departments of Management and Psychology, Gettysburg College, Gettysburg USA 2: Department of Management and Quantitative Methods, Illinois State University, Normal USA 3: Newhouse School of Communications, Syracuse University, Syracuse USA 4: US Air Force Research Laboratory, 711 Human Performance Wing, Dayton USA; Source Info: Sep2014, Vol. 29 Issue 3, p335; Subject Term: INDUSTRIAL psychology -- Research; Subject Term: APPLIED psychology -- Research; Subject Term: SUSPICION; Subject Term: RESEARCH; Subject Term: DECISION making; Subject Term: TEAMS in the workplace -- Research; Subject Term: EMPLOYEES; Author-Supplied Keyword: Call for papers; Author-Supplied Keyword: Special issue; Author-Supplied Keyword: Suspicion; Number of Pages: 8p; Document Type: Article L3 - 10.1007/s10869-014-9360-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97411911&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Bobko, Philip AU - Barelka, Alex AU - Hirshfield, Leanne AU - Lyons, Joseph T1 - Call for Papers: Embedding the Concept of Suspicion in Research on Business and Applied Psychology. JO - Journal of Business & Psychology JF - Journal of Business & Psychology Y1 - 2014/09// VL - 29 IS - 3 M3 - Editorial SP - 495 EP - 497 SN - 08893268 AB - The article announces the periodical's call for papers about the concept of suspicion in business and applied psychology research. KW - INDUSTRIAL psychology -- Research KW - SUSPICION KW - APPLIED psychology -- Research N1 - Accession Number: 97411910; Bobko, Philip 1; Email Address: pbobko@gettysburg.edu Barelka, Alex 2; Email Address: ajbarel@ilstu.edu Hirshfield, Leanne 3; Email Address: lmhirshf@syr.edu Lyons, Joseph 4; Email Address: joseph.lyons.6@us.af.mil; Affiliation: 1: Gettysburg College, Gettysburg USA 2: Illinois State University, Normal USA 3: Syracuse University, Syracuse USA 4: US Air Force Research Laboratory, Dayton USA; Source Info: Sep2014, Vol. 29 Issue 3, p495; Subject Term: INDUSTRIAL psychology -- Research; Subject Term: SUSPICION; Subject Term: APPLIED psychology -- Research; Number of Pages: 3p; Document Type: Editorial L3 - 10.1007/s10869-014-9362-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97411910&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 107800571 T1 - Adenovirus 36 antibodies associated with clinical diagnosis of overweight/obesity but not BMI gain: a military cohort study. AU - Voss, Jameson D AU - Burnett, Daniel G AU - Olsen, Cara H AU - Haverkos, Harry W AU - Atkinson, Richard L Y1 - 2014/09//2014 Sep N1 - Accession Number: 107800571. Language: English. Entry Date: 20150206. Revision Date: 20161222. Publication Type: journal article; research. Journal Subset: Biomedical; USA. Grant Information: Y01 AI005072/AI/NIAID NIH HHS/United States. NLM UID: 0375362. KW - Viruses -- Immunology KW - DNA Virus Infections -- Epidemiology KW - DNA Virus Infections -- Immunology KW - Antibodies, Viral -- Blood KW - Body Mass Index KW - Obesity -- Diagnosis KW - Obesity -- Epidemiology KW - Obesity KW - Adipose Tissue Distribution KW - Adolescence KW - Prospective Studies KW - Human KW - Male KW - Military Personnel KW - Predictive Value of Tests KW - Cox Proportional Hazards Model KW - Retrospective Design KW - Epidemiological Research KW - Young Adult SP - E1708 EP - 12 JO - Journal of Clinical Endocrinology & Metabolism JF - Journal of Clinical Endocrinology & Metabolism JA - J CLIN ENDOCRINOL METAB VL - 99 IS - 9 PB - Oxford University Press / USA AB - Context: Obesity is a public health priority, which also threatens national security. Adenovirus 36 (Adv36) increases adiposity in animals and Adv36 antibody status is associated with human obesity, but it is unknown whether infection predicts the development of human adiposity.Objective: The objective of the study was to assess infection status and subsequent weight gain.Design: The study had a retrospective cohort design.Setting: The study was conducted at Air Force fitness testing and clinical encounters.Participants: PARTICIPANTS included Air Force male enlistees, aged 18-22 years, with a baseline body mass index (BMI) of 20-30 kg/m(2) followed up from enlistment (beginning in 1995) until 2012 or separation from the Air Force.Exposure: EXPOSURE included Adv36 infection status at the time of entry.Main Outcome Measure: Follow-up BMI, the primary outcome, and diagnosis of overweight/obesity by the International Classification of Diseases, ninth revision V85.25+ and 278.0* series (secondary outcome) were recorded.Results: The last recorded follow-up BMI was similar among infected and uninfected, 26.4 and 27.2 kg/m(2), respectively (P > .05). However, infected individuals had a higher hazard of a medical provider's diagnosis of overweight/obese over time (hazard ratio 1.8, 95% confidence interval 1.0-3.1, P = .04), adjusted for baseline BMI. Additionally, infected individuals who were lean at baseline (BMI of 22.5 kg/m(2)) had a 3.9 times greater hazard of developing an overweight/obese clinical diagnosis (95% confidence interval 1.5-9.7, P = .004) compared with uninfected lean individuals after adjusting for interaction (P = .03) between infection and baseline BMI.Conclusions: The presence of Adv36 antibodies was not associated with higher BMI at baseline or follow-up within this military population. However, being infected was associated with developing a clinical diagnosis of overweight/obesity, especially among those lean at baseline. SN - 0021-972X AD - Epidemiology Consult Service (J.D.V.), United States Air Force School of Aerospace Medicine, Wright Patterson Air Force Base, Ohio 45433; Department of Preventive Medicine and Biometrics (J.D.V., D.G.B., C.H.O., H.W.H.), Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814; Obetech Obesity Research Center (R.L.A.), Richmond, Virginia 23219; and Virginia Commonwealth University (R.L.A.), Richmond, Virginia 23298. U2 - PMID: 24971666. DO - 10.1210/jc.2014-1863 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107800571&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Alekseenko, A. AU - Josyula, E. T1 - Deterministic solution of the spatially homogeneous Boltzmann equation using discontinuous Galerkin discretizations in the velocity space. JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2014/09// VL - 272 M3 - Article SP - 170 EP - 188 SN - 00219991 AB - Abstract: We present a new deterministic approach for the solution of the spatially homogeneous Boltzmann kinetic equation based on nodal discontinuous Galerkin (DG) discretizations in the velocity space. In the new approach the collision operator has the form of a bilinear operator with a pre-computed kernel; its evaluation requires operations at every point of the phase space where n is the number of degrees of freedom in one velocity dimension. The method is generalized to any molecular potential. Results of numerical simulations are presented for the problem of spatially homogeneous relaxation for the hard spheres potential. Comparison with the method of Direct Simulation Monte Carlo showed excellent agreement. [Copyright &y& Elsevier] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BOLTZMANN'S equation KW - TRANSPORT theory (Mathematics) KW - GALERKIN methods KW - DISCRETIZATION methods KW - FLUID velocity measurements KW - SIMULATION methods & models KW - Boltzmann collision operator KW - Deterministic solution KW - Discontinuous Galerkin methods N1 - Accession Number: 96325803; Alekseenko, A. 1,2; Email Address: Alexander.Alekseenko@csun.edu Josyula, E. 2; Email Address: Eswar.Josyula@us.af.mil; Affiliation: 1: Department of Mathematics, California State University Northridge, Northridge, CA, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Sep2014, Vol. 272, p170; Subject Term: BOLTZMANN'S equation; Subject Term: TRANSPORT theory (Mathematics); Subject Term: GALERKIN methods; Subject Term: DISCRETIZATION methods; Subject Term: FLUID velocity measurements; Subject Term: SIMULATION methods & models; Author-Supplied Keyword: Boltzmann collision operator; Author-Supplied Keyword: Deterministic solution; Author-Supplied Keyword: Discontinuous Galerkin methods; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.jcp.2014.03.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96325803&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blunck, David L. AU - Shouse, Dale T. AU - Neuroth, Craig AU - Lynch, Amy AU - Erdmann Jr., Timothy J. AU - Burrus, David L. AU - Zelina, Joseph AU - Richardson, Daniel AU - Caswell, Andrew T1 - Experimental Studies of Cavity and Core Flow Interactions With Application to Ultra-Compact Combustors. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2014/09// VL - 136 IS - 9 M3 - Article SP - 1 EP - 8 SN - 07424795 AB - Reducing the weight and decreasing pressure losses of aviation gas turbine engines improves the thrust-to-weight ratio and improves efficiency. In ultra-compact combustors (UCC), engine length is reduced and pressure losses are decreased by merging a combustor with adjacent components using a systems engineering approach. High-pressure turbine inlet vanes can be placed in a combustor to form a UCC. In this work, experiments were performed to understand the performance and associated physics within a UCC. Experiments were performed using a combustor operating at pressures in the range of 520-1030 kPa (75-150 psia) and inlet temperature equal to 480-620 K (865 R-1120R). The primary reaction zone is in a single trapped-vortex cavity where the equivalence ratio was varied from 0.7 to 1.8. Combustion efficiencies and NOx emissions were measured and exit temperature profiles were obtained for various air loadings, cavity equivalence ratios, and configurations with and without representative turbine inlet vanes. A combined diffuser-flameholder (CDF) was used to study the interaction of cavity and core flows. Discrete jets of air immediately above the cavity result in the highest combustion efficiencies. The air jets reinforce the vortex structure within the cavity, as confirmed through coherent structure velocimetry of high-speed images. The combustor exit temperature profile is peaked away from the cavity when a CDF is used. Testing of a CDF with vanes showed that combustion efficiencies greater than 99.5% are possible for 0.8 ≤ Φcavity ≤ 1.8. Temperature profiles at the exit of the UCC with vanes agreed within 10% of the average value. Exit-averaged emission indices of NOx ranged from 3.5 to 6.5 g/kgfuel for all test conditions. Increasing the air loading enabled greater mass flow rates of fuel with equivalent combustion efficiencies. This corresponds to increased vortex strength within the cavity due to the greater momentum of the air driver jets. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS turbines -- Efficiency KW - GAS turbines -- Combustion chambers KW - GAS turbines -- Combustion KW - COMBUSTION chambers KW - COMBUSTION N1 - Accession Number: 98387554; Blunck, David L. 1,2; Email Address: david.blunck@oregonstate.edu Shouse, Dale T. 1; Email Address: dale.shouse@us.af.mil Neuroth, Craig 1; Email Address: craig.neuroth@us.af.mil Lynch, Amy 1; Email Address: amy.lynch.1@us.af.mil Erdmann Jr., Timothy J. 3; Email Address: timothy.erdmann.3.ctr@us.af.mil Burrus, David L. 3; Email Address: david.burrus.1.ctr@us.af.mil Zelina, Joseph 4; Email Address: joseph.zelina@ge.com Richardson, Daniel 5; Email Address: daniel.richardson.26.ctr@us.af.mil Caswell, Andrew 6; Email Address: andrew.caswell.2.ctr@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 2: School of Mechanical, Industrial, and Manufacturing Engineering, Oregon State University 3: Innovative Scientific Solutions Inc., Dayton, OH 45459 4: GE Aviation, Evendale, OH 45241 5: NRC Research Associate, Wright-Patterson AFB, OH 45433 6: Spectral Energies, LLC, Dayton, OH 45431; Source Info: Sep2014, Vol. 136 Issue 9, p1; Subject Term: GAS turbines -- Efficiency; Subject Term: GAS turbines -- Combustion chambers; Subject Term: GAS turbines -- Combustion; Subject Term: COMBUSTION chambers; Subject Term: COMBUSTION; NAICS/Industry Codes: 562210 Waste treatment and disposal; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 8p; Document Type: Article L3 - 10.1115/1.4026975 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98387554&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Naito, Clay AU - States, Joe AU - Jackson, Christopher AU - Bewick, Bryan T1 - Crumb Rubber Concrete Performance under Near-Field Blast and Ballistic Demands. JO - Journal of Materials in Civil Engineering JF - Journal of Materials in Civil Engineering Y1 - 2014/09// VL - 26 IS - 9 M3 - Article SP - 1 EP - 10 SN - 08991561 AB - To address the ever-increasing quantity of scrap tires produced in the United States, a study is conducted on the use of crumb rubber in concrete for use in structures against near-field blast and ballistic demands. Crumb rubber concrete (CRC) is produced by replacing a volume percentage of the traditional coarse and/or fine aggregate with crumb rubber particles. Crumb rubber is produced in various gradations from used vehicle tires through a variety of shredding processes. The influence of crumb rubber on the constitutive and structural performance of concrete under quasi-static loading has been examined in past research. CRC has been shown to have decreased strength and stiffness while still being a useable structural material. This research study examines the use of CRC for the specialized application of blast and ballistic protection. The program characterizes resistance of CRC to contact and near-contact high explosive detonations, and examines depth of penetration, and perforation using V50 methods. The results of the experimental and analytical investigation found that (1) the addition of crumb rubber results in decreased resistance to ballistic demands and near-field blast loads, (2) the reduction is less than that estimated by accepted predictor methods, and (3) when normalized by weight rather than thickness, the use of CRC results in an improvement in resistance to ballistic and near-field blast demands. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials in Civil Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRUMB rubber KW - NEAR-fields KW - BALLISTICS KW - QUASISTATIC processes KW - BUILDING materials KW - CONCRETE -- Research KW - BLAST effect KW - Ballistic KW - Blast KW - Blasting KW - Concrete KW - Crumb rubber concrete KW - Material tests KW - Rubber KW - Spall KW - Test N1 - Accession Number: 97504165; Naito, Clay 1; Email Address: cjn3@lehigh.edu States, Joe 2; Email Address: J.States@gaiconsultants.com Jackson, Christopher 3; Email Address: Christopher.Jackson.ctr@tyndall.af.mil Bewick, Bryan 4; Email Address: bbewick@protection-consultants.com; Affiliation: 1: Associate Professor, Dept. of Civil and Environmental Engineering, Lehigh Univ., 13 E. Packer Ave., Bethlehem, PA 18015 2: Senior Structural EIT, GAI Consultants, Inc., 385 E. Waterfront Dr., Homestead, PA 15120 3: Air Force Research Laboratory Support Contractor, Applied Research Associates, Inc., P.O. Box 40128, Tyndall Air Force Base, FL 32403 4: Project Engineer, Protection Engineering Consultants, 14144 Trautwein Rd., Austin, TX 78737; Source Info: Sep2014, Vol. 26 Issue 9, p1; Subject Term: CRUMB rubber; Subject Term: NEAR-fields; Subject Term: BALLISTICS; Subject Term: QUASISTATIC processes; Subject Term: BUILDING materials; Subject Term: CONCRETE -- Research; Subject Term: BLAST effect; Author-Supplied Keyword: Ballistic; Author-Supplied Keyword: Blast; Author-Supplied Keyword: Blasting; Author-Supplied Keyword: Concrete; Author-Supplied Keyword: Crumb rubber concrete; Author-Supplied Keyword: Material tests; Author-Supplied Keyword: Rubber; Author-Supplied Keyword: Spall; Author-Supplied Keyword: Test; NAICS/Industry Codes: 423390 Other Construction Material Merchant Wholesalers; NAICS/Industry Codes: 416390 Other specialty-line building supplies merchant wholesalers; NAICS/Industry Codes: 416310 General-line building supplies merchant wholesalers; NAICS/Industry Codes: 444190 Other Building Material Dealers; NAICS/Industry Codes: 327320 Ready-Mix Concrete Manufacturing; NAICS/Industry Codes: 327999 All Other Miscellaneous Nonmetallic Mineral Product Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1061/(ASCE)MT.1943-5533.0000957 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97504165&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eschleman, Kevin J. AU - Madsen, Jamie AU - Alarcon, Gene AU - Barelka, Alex T1 - Benefiting from creative activity: The positive relationships between creative activity, recovery experiences, and performance-related outcomes. JO - Journal of Occupational & Organizational Psychology JF - Journal of Occupational & Organizational Psychology Y1 - 2014/09// VL - 87 IS - 3 M3 - Article SP - 579 EP - 598 PB - Wiley-Blackwell SN - 09631798 AB - Employees have limited personal time to engage in activities that enable them to recover from a demanding work environment and perform at a high level. To evaluate the importance of non-work creative activity, we conducted two studies that examine the relationships between non-work creative activity, recovery experiences, and performance-related behaviours at work. Study 1 included employees who provided self-rated performance-related outcomes, whereas Study 2 included employees with other-rated (co-workers and subordinates) performance-related outcomes. Creative activity was positively associated with recovery experiences (i.e., mastery, control, and relaxation) and performance-related outcomes (i.e., job creativity and extra-role behaviours). The mediating effects of recovery experiences were examined to better understand the underlying processes involved in the relationship between creative activity and performance-related outcomes. Creative activity was found to have both indirect effects and direct effects on performance-related outcomes, but the effects varied by the type of performance-related outcome. The results indicate that organizations may benefit from encouraging employees to consider creative activities in their efforts to recover from work. Practitioner points Organizations should increase employee awareness of the benefits of creative activity on recovery. Many companies already provide information to employees regarding the importance of specific activities (e.g., eating habits, exercise) on physical health. Information on activities that influence recovery - a psychological health consequence - should be included in the informational resource provided to employees., Organizations may consider professional development opportunities for employees that involve creative activities while away from work. Creative activities are likely to provide valuable experiences of mastery and control, but may also provide employees experiences of discovery that uniquely influence performance-related outcomes. Opportunities used by large organizations, such as Zappos Inc., include employees bringing their artwork to work to decorate their offices. Other options include memberships to art studios, creative writing resources, and access to musical instruments. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Occupational & Organizational Psychology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHI-squared test KW - CREATIVE ability KW - JOB stress KW - LABOR supply KW - PERSONALITY KW - PROBABILITY theory KW - QUESTIONNAIRES KW - SELF-evaluation KW - JOB performance KW - STRUCTURAL equation modeling KW - DESCRIPTIVE statistics KW - creative activity KW - job creativity KW - organizational citizenship behaviours KW - performance KW - recovery experiences N1 - Accession Number: 97055356; Eschleman, Kevin J. 1 Madsen, Jamie 1 Alarcon, Gene 2 Barelka, Alex 3; Affiliation: 1: Department of Psychology, San Francisco State University 2: Air Force Research Laboratory 3: Department of Management and Quantitative Methods, Illinois State University; Source Info: Sep2014, Vol. 87 Issue 3, p579; Subject Term: CHI-squared test; Subject Term: CREATIVE ability; Subject Term: JOB stress; Subject Term: LABOR supply; Subject Term: PERSONALITY; Subject Term: PROBABILITY theory; Subject Term: QUESTIONNAIRES; Subject Term: SELF-evaluation; Subject Term: JOB performance; Subject Term: STRUCTURAL equation modeling; Subject Term: DESCRIPTIVE statistics; Author-Supplied Keyword: creative activity; Author-Supplied Keyword: job creativity; Author-Supplied Keyword: organizational citizenship behaviours; Author-Supplied Keyword: performance; Author-Supplied Keyword: recovery experiences; NAICS/Industry Codes: 561320 Temporary Help Services; Number of Pages: 20p; Illustrations: 2 Diagrams, 2 Charts; Document Type: Article L3 - 10.1111/joop.12064 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97055356&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 103973542 T1 - Benefiting from creative activity: The positive relationships between creative activity, recovery experiences, and performance-related outcomes. AU - Eschleman, Kevin J. AU - Madsen, Jamie AU - Alarcon, Gene AU - Barelka, Alex Y1 - 2014/09// N1 - Accession Number: 103973542. Language: English. Entry Date: 20140725. Revision Date: 20150901. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Europe; Expert Peer Reviewed; Peer Reviewed; UK & Ireland. Special Interest: Psychiatry/Psychology. NLM UID: 9209845. KW - Creativeness -- Evaluation KW - Workforce -- Psychosocial Factors KW - Stress, Occupational -- Therapy KW - Human KW - Self Report KW - Descriptive Statistics KW - Questionnaires KW - Personality KW - Chi Square Test KW - Structural Equation Modeling KW - P-Value KW - Job Performance -- Evaluation SP - 579 EP - 598 JO - Journal of Occupational & Organizational Psychology JF - Journal of Occupational & Organizational Psychology JA - J OCCUP ORGAN PSYCHOL VL - 87 IS - 3 CY - Malden, Massachusetts PB - Wiley-Blackwell AB - Employees have limited personal time to engage in activities that enable them to recover from a demanding work environment and perform at a high level. To evaluate the importance of non-work creative activity, we conducted two studies that examine the relationships between non-work creative activity, recovery experiences, and performance-related behaviours at work. Study 1 included employees who provided self-rated performance-related outcomes, whereas Study 2 included employees with other-rated (co-workers and subordinates) performance-related outcomes. Creative activity was positively associated with recovery experiences (i.e., mastery, control, and relaxation) and performance-related outcomes (i.e., job creativity and extra-role behaviours). The mediating effects of recovery experiences were examined to better understand the underlying processes involved in the relationship between creative activity and performance-related outcomes. Creative activity was found to have both indirect effects and direct effects on performance-related outcomes, but the effects varied by the type of performance-related outcome. The results indicate that organizations may benefit from encouraging employees to consider creative activities in their efforts to recover from work. Practitioner points Organizations should increase employee awareness of the benefits of creative activity on recovery. Many companies already provide information to employees regarding the importance of specific activities (e.g., eating habits, exercise) on physical health. Information on activities that influence recovery - a psychological health consequence - should be included in the informational resource provided to employees., Organizations may consider professional development opportunities for employees that involve creative activities while away from work. Creative activities are likely to provide valuable experiences of mastery and control, but may also provide employees experiences of discovery that uniquely influence performance-related outcomes. Opportunities used by large organizations, such as Zappos Inc., include employees bringing their artwork to work to decorate their offices. Other options include memberships to art studios, creative writing resources, and access to musical instruments. SN - 0963-1798 AD - Department of Psychology, San Francisco State University AD - Air Force Research Laboratory AD - Department of Management and Quantitative Methods, Illinois State University DO - 10.1111/joop.12064 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=103973542&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 103883260 T1 - Evaluation of the sealing capability of implants to titanium and zirconia abutments against Porphyromonas gingivalis, Prevotella intermedia, and Fusobacterium nucleatum under different screw torque values. AU - Smith, Nicole A. AU - Turkyilmaz, Ilser Y1 - 2014/09// N1 - Accession Number: 103883260. Language: English. Entry Date: 20140908. Revision Date: 20150710. Publication Type: Journal Article; research. Journal Subset: Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Dental Care. NLM UID: 0376364. KW - Dental Implants KW - Bacteria KW - Prosthesis Retention KW - Human KW - Analysis of Variance -- Utilization SP - 561 EP - 567 JO - Journal of Prosthetic Dentistry JF - Journal of Prosthetic Dentistry JA - J PROSTHET DENT VL - 112 IS - 3 CY - New York, New York PB - Elsevier Science AB - Statement of problem When evaluating long-term implant success, clinicians have always been concerned with the gap at the implant-abutment junction, where bacteria can accumulate and cause marginal bone loss. However, little information regarding bacterial leakage at the implant-abutment junction, or microgap, is available. Purpose The purpose of this study was to evaluate sealing at 2 different implant-abutment interfaces under different screw torque values. Material and methods Twenty sterile zirconia abutments and 20 sterile titanium abutments were screwed into 40 sterile implants and placed in test tubes. The ability of a bacterial mixture of Prevotella intermedia, Porphyromonas gingivalis, and Fusobacterium nucleatum to leak through an implant-titanium abutment seal under 20 and 35 Ncm torque values and an implant-zirconia abutment seal under 20 and 35 Ncm torque values was evaluated daily until leakage was noted. Once a unit demonstrated leakage, a specimen was plated. After 4 days, the number of colonies on each plate was counted with an electronic colony counter. Plating was used to verify whether or not bacterial leakage occurred and when leakage first occurred. The implant-abutment units were removed and rinsed with phosphate buffered saline solution and evaluated with a stereomicroscope. The marginal gap between the implant and the abutment was measured and correlated with the amount of bacterial leakage. The data were analyzed with ANOVA. Results Bacterial leakage was noted in all specimens, regardless of material or screw torque value. With titanium abutments, changing the screw torque value from 20 to 35 Ncm did not significantly affect the amount of bacterial leakage. However, with zirconia abutments, changing the screw torque value from 20 to 35 Ncm was statistically significant ( P <.017). Overall, the marginal gap noted was larger at the zirconia-abutment interface (5.25 ±1.99 μm) than the titanium-abutment interface (12.38 ±3.73 μm), irrespective of the screw torque value. Stereomicroscopy revealed a nonuniform marginal gap in all specimens. Conclusion The results of this study showed that, over time, bacteria will leak through the implant-abutment microgap at the implant-abutment interface. Implants with a titanium abutment demonstrate a smaller microgap than implants with a zirconia abutment. Tightening the zirconia abutment screw from 20 to 35 Ncm decreases the size of the microgap, which suggests a more intimate fit between the implant and the abutment. SN - 0022-3913 AD - Resident, United States Air Force, Joint Base San Antonio, Lackland AFB, San Antonio, Texas AD - Assistant Professor, Director, Dental School Implant Clinic, Department of Comprehensive Dentistry, The University of Texas Health Science Center, San Antonio, Texas U2 - PMID: 24656409. DO - 10.1016/j.prosdent.2013.11.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=103883260&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Hay, R.S. AU - Armani, C.J. AU - Ruggles-Wrenn, M.B. AU - Fair, G.E. T1 - Creep mechanisms and microstructure evolution of Nextel™ 610 fiber in air and steam. JO - Journal of the European Ceramic Society JF - Journal of the European Ceramic Society Y1 - 2014/09// VL - 34 IS - 10 M3 - Article SP - 2413 EP - 2426 SN - 09552219 AB - Creep rates of Nextel™ 610 alumina fibers were measured at 1100°C and 100–500MPa in air and steam. Steam increased creep rates and reduced fiber lifetimes. Fiber microstructures were characterized by TEM. The small amounts of grain growth, fiber-axis grain elongation, and pore growth that occur during creep were quantified. To separate the effects of stress and temperature on microstructural evolution, grain growth and elongation were also quantified for fibers heat-treated for 1–100h in air at 1100–1500°C. Grain growth laws were determined. The contributions of pore growth and grain elongation to creep strain were quantified. Grain elongation accounts for a large fraction of the strain during creep in air, but little in steam. Pore growth was more pronounced in steam, but does not create significant creep strain. Creep and failure mechanisms consistent with the observed microstructural changes are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the European Ceramic Society is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CREEP (Materials) KW - MICROSTRUCTURE KW - ALUMINUM oxide KW - TRANSMISSION electron microscopy KW - GRAIN size KW - STRAINS & stresses (Mechanics) KW - Alumina KW - Creep KW - Fibers KW - Microstructure KW - Steam N1 - Accession Number: 95621899; Hay, R.S. 1; Email Address: Randall.Hay@wpafb.af.mil Armani, C.J. 2 Ruggles-Wrenn, M.B. 2 Fair, G.E. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7817, United States 2: Air Force Institute of Technology, Wright-Patterson Air Force Base, OH 45433-7765, United States; Source Info: Sep2014, Vol. 34 Issue 10, p2413; Subject Term: CREEP (Materials); Subject Term: MICROSTRUCTURE; Subject Term: ALUMINUM oxide; Subject Term: TRANSMISSION electron microscopy; Subject Term: GRAIN size; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: Alumina; Author-Supplied Keyword: Creep; Author-Supplied Keyword: Fibers; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Steam; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.jeurceramsoc.2014.01.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95621899&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Portada III, Robert A. AU - Riley, John H. AU - Gambone, Michael D. T1 - SECURITY SECTOR REFORM IN SOUTH SUDAN: IDENTIFYING ROLES FOR PRIVATE MILITARY AND SECURITY COMPANIES. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 2014///Fall2014 VL - 31 IS - 2 M3 - Article SP - 151 EP - 178 SN - 87553449 AB - The article examines the state of South Sudan's security services and the operations of private military and security companies (PMSCs) in the country. Topics discussed include the tendency of PMSCs, like Blackwater, to commit human rights violations and the advantages of integrating PMSCs into the securty sector reform (SSR) process. Information is al presented on the threats to South Sudanese security and the state of SSR in the country. KW - PRIVATE military companies KW - PRIVATE security services KW - MERCENARY troops KW - DEFENSE contracts KW - NATIONAL security KW - SOUTH Sudan -- History KW - BLACKWATER USA N1 - Accession Number: 102179589; Portada III, Robert A. 1; Email Address: rportada79@gmail.com; Riley, John H. 2,3; Gambone, Michael D. 4; Affiliations: 1 : Assistant Professor, Department of Political Science, Kutztown University; 2 : Distinguished Visiting Professor, Department of Political Science, United States Air Force Academy; 3 : Associate Professor, Department of Political Science, Kutztown University; 4 : Professor, Department of History, Kutztown University, Pennsylvania; Source Info: Fall2014, Vol. 31 Issue 2, p151; Historical Period: ca 2011 to ca 2014; Subject Term: PRIVATE military companies; Subject Term: PRIVATE security services; Subject Term: MERCENARY troops; Subject Term: DEFENSE contracts; Subject Term: NATIONAL security; Subject Term: SOUTH Sudan -- History; Number of Pages: 28p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hia&AN=102179589&site=ehost-live&scope=site DP - EBSCOhost DB - hia ER - TY - JOUR AU - Hills, Susan L. AU - Stoltey, Juliet AU - Martínez, Diana AU - Kim, Paul Y. AU - Sheriff, Heather AU - Zangeneh, Ana AU - Eilerman, Sally R. AU - Fischer, Marc T1 - A Case Series of Three US Adults With Japanese Encephalitis, 2010–2012. JO - Journal of Travel Medicine JF - Journal of Travel Medicine Y1 - 2014/09//Sep/Oct2014 VL - 21 IS - 5 M3 - Article SP - 310 EP - 313 SN - 11951982 AB - Background. Japanese encephalitis (JE) virus is the leading cause of vaccine-preventable encephalitis in Asia. Although the risk for acquiring JE for most travelers to Asia is low, it varies based on the destination, season, trip duration, and activities. Methods. We present case reports of three US adults who were infected with JE virus while traveling or residing in Asia. Results. Among the three JE patients, the first made a 10-day trip to mainland China and participated in outdoor activities in a rural area, the second had been resident in Taiwan for 4 months, and the third, fatal case was an expatriate living in South Korea. Conclusions. JE should be considered in the differential diagnosis for any patient with an acute neurologic infection, who has recently been in a JE-endemic country. Health-care providers should assess the itineraries of travelers to JE-endemic countries, provide guidance on personal protective measures to prevent vector-borne diseases, and consider recommending JE vaccine for travelers at increased risk for JE virus infection. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Travel Medicine is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JAPANESE B encephalitis KW - EXPATRIATION KW - DIFFERENTIAL diagnosis KW - ANIMALS as carriers of disease KW - TRAVEL -- Health aspects KW - CASE studies N1 - Accession Number: 103450883; Hills, Susan L. 1; Email Address: shills@cdc.gov Stoltey, Juliet 2 Martínez, Diana 3 Kim, Paul Y. 4 Sheriff, Heather 5 Zangeneh, Ana 3 Eilerman, Sally R. 6 Fischer, Marc 1; Affiliation: 1: Arboviral Diseases Branch, Centers for Disease Control and Prevention, Fort Collins, CO, USA 2: Department of Medicine, University of California San Francisco, San Francisco, CA, USA 3: Harris County Public Health and Environmental Services, Texas Department of State Health Services, Houston, TX, USA 4: 51st Aerospace Medicine Squadron, United States Air Force, Pyeongtaek, South Korea 5: California Department of Public Health, Richmond, CA, USA 6: 51st Medical Operations Squadron, United States Air Force, Pyeongtaek, South Korea; Source Info: Sep/Oct2014, Vol. 21 Issue 5, p310; Subject Term: JAPANESE B encephalitis; Subject Term: EXPATRIATION; Subject Term: DIFFERENTIAL diagnosis; Subject Term: ANIMALS as carriers of disease; Subject Term: TRAVEL -- Health aspects; Subject Term: CASE studies; Number of Pages: 4p; Document Type: Article L3 - 10.1111/jtm.12127 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103450883&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yamazaki, T. Gayle1 AU - Packard, Gary1 AU - Lindsay, Douglas1 AU - Edmondson, Edie1 AU - Gibb, Randall1 AU - Sanders, Joseph1 AU - Schwenn, Heidi1 AU - Walchli, Scott1 AU - Jones, Steven1 AU - Gibson, Lorne1 AU - O'Donnell, Kathleen1 AU - Katayama, Andrew D.1, Andrew.Katayama@usafa.edu T1 - Debunking the Myths Commonly Believed to Affect Test Performance among College Students. JO - Learning Assistance Review (TLAR) JF - Learning Assistance Review (TLAR) J1 - Learning Assistance Review (TLAR) PY - 2014///Fall2014 Y1 - 2014///Fall2014 VL - 19 IS - 2 CP - 2 M3 - Article SP - 7 EP - 16 SN - 10870059 AB - Although the perception of taking a quiz via paper-and-pencil vs. taking a quiz via a Classroom Response System (CRS) may vary substantially, performance on such quizzes may be less substantiated than originally perceived. In this experiment, we set out to gather data to investigate if such perceptions are true regarding quiz-taking methods. We also were interested in seeing if the time of day (morning vs. afternoon quizzes) had any effect on performance. To evaluate the differences between quiz taking methods and time of day factors, randomly assigned students to sections were created by the registrar's office. A total of 404 college freshman enrolled in an introductory psychology class took part in this study. Data were analyzed to see if the myths commonly believed to affect college student test performance really exists and the results are discussed. [ABSTRACT FROM AUTHOR] KW - College students -- Research KW - Student response systems -- Research KW - Educational tests & measurements -- Research KW - Instructional systems -- Research KW - College freshmen -- Research N1 - Accession Number: 99397596; Authors:Yamazaki, T. Gayle 1; Packard, Gary 1; Lindsay, Douglas 1; Edmondson, Edie 1; Gibb, Randall 1; Sanders, Joseph 1; Schwenn, Heidi 1; Walchli, Scott 1; Jones, Steven 1; Gibson, Lorne 1; O'Donnell, Kathleen 1; Katayama, Andrew D. 1 Email Address: Andrew.Katayama@usafa.edu; Affiliations: 1: United States Air Force Academy, CO; Subject: Student response systems -- Research; Subject: Educational tests & measurements -- Research; Subject: College students -- Research; Subject: Instructional systems -- Research; Subject: College freshmen -- Research; Number of Pages: 10p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=99397596&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR AU - Holtom, Brooks C. AU - Lindsay, Douglas R. AU - Smith, Daryl R. AU - Burton, James P. T1 - The Relative Strength of Job Attitudes and Job Embeddedness in Predicting Turnover in a U.S. Military Academy. JO - Military Psychology (American Psychological Association) JF - Military Psychology (American Psychological Association) Y1 - 2014/09// VL - 26 IS - 5/6 M3 - Article SP - 397 EP - 408 SN - 08995605 AB - This longitudinal study explored the relative strength of job satisfaction, components of organizational commitment, dimensions of job embeddedness and person-organization fit as predictors of voluntary turnover at the U.S. Air Force Academy. Using survey data from 643 first- and second-year cadets, we found that job satisfaction, affective commitment, on-the-job embeddedness, and person-organization fit were significantly negatively related to turnover. Based on relative weights analysis, we found the most powerful predictor of cadet turnover was person-organization fit, which has important implications for military leaders. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (American Psychological Association) is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMMITMENT (Psychology) KW - SCHOOL dropouts KW - JOB satisfaction KW - LONGITUDINAL method KW - MILITARY personnel KW - SURVEYS KW - job embeddedness KW - job satisfaction KW - organizational commitment KW - person-organization fit KW - turnover KW - UNITED States. Air Force N1 - Accession Number: 103170487; Holtom, Brooks C. 1; Email Address: bch6@georgetown.edu Lindsay, Douglas R. 2 Smith, Daryl R. 3 Burton, James P. 4; Affiliation: 1: Georgetown University 2: United States Air Force Academy 3: Mount St. Joseph University 4: Northern Illinois University; Source Info: 2014, Vol. 26 Issue 5/6, p397; Subject Term: COMMITMENT (Psychology); Subject Term: SCHOOL dropouts; Subject Term: JOB satisfaction; Subject Term: LONGITUDINAL method; Subject Term: MILITARY personnel; Subject Term: SURVEYS; Author-Supplied Keyword: job embeddedness; Author-Supplied Keyword: job satisfaction; Author-Supplied Keyword: organizational commitment; Author-Supplied Keyword: person-organization fit; Author-Supplied Keyword: turnover; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 12p; Document Type: Article L3 - 10.1037/mil0000055 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103170487&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Domonkos, M. T. AU - Watrous, J. AU - Parker, J. V. AU - Cavazos, T. AU - Slenes, K. AU - Heidger, S. AU - Brown, D. AU - Wilson, D. T1 - Analysis of folded pulse forming line operation. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2014/09// VL - 85 IS - 9 M3 - Article SP - 1 EP - 8 PB - American Institute of Physics SN - 00346748 AB - A compact pulse forming line (CPFL) concept based on a folded transmission line and high-breakdown strength dielectric was explored through an effort combining proof-of-principle experiments with electromagnetic modeling. A small-scale folded CPFL was fabricated using surface-mount ceramic multilayer capacitors. The line consisted of 150 capacitors close-packed in parallel and delivered a 300 ns flat-top pulse. The concept was carried to a 10 kV class device using a polymer-ceramic nanocomposite dielectric with a permittivity of 37.6. The line was designed for a 161 ns FWHM length pulse into a matched load. The line delivered a 110 ns FWHM pulse, and the pulse peak amplitude exceeded the matched load ideal. Transient electromagnetic analysis using the particle-in-cell code ICEPIC was conducted to examine the nature of the unexpected pulse shortening and distortion. Two-dimensional analysis failed to capture the anomalous behavior. Three-dimensional analysis replicated the pulse shape and revealed that the bends were largely responsible for the pulse shortening. The bends not only create the expected reflection of the incident TEM wave but also produce a non-zero component of the Poynting vector perpendicular to the propagation direction of the dominant electromagnetic wave, resulting in power flow largely external to the PFL. This analysis explains both the pulse shortening and the amplitude of the pulse. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PULSE modulation (Electronics) KW - RESEARCH KW - ELECTRIC lines KW - DIELECTRICS KW - CAPACITORS KW - AMPLITUDE modulation N1 - Accession Number: 98652558; Domonkos, M. T. 1 Watrous, J. 2 Parker, J. V. 3 Cavazos, T. 3 Slenes, K. 4 Heidger, S. 1 Brown, D. 3 Wilson, D. 5; Affiliation: 1: Air Force Research Laboratory, KirtlandAFB, New Mexico 87117, USA 2: TechFlow, 2155 Louisiana Blvd. NE, Albuquerque, New Mexico 87110, USA 3: Leidos, 2109 Air Park Rd. SE, Albuquerque, New Mexico 87106, USA 4: TPL, Inc., 3921 Academy Parkway North NE, Albuquerque, New Mexico 87109, USA 5: Voss Scientific, 418 Washington St. SE, Albuquerque, New Mexico 87108, USA; Source Info: 2014, Vol. 85 Issue 9, p1; Subject Term: PULSE modulation (Electronics); Subject Term: RESEARCH; Subject Term: ELECTRIC lines; Subject Term: DIELECTRICS; Subject Term: CAPACITORS; Subject Term: AMPLITUDE modulation; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238910 Site Preparation Contractors; Number of Pages: 8p; Illustrations: 1 Color Photograph, 1 Black and White Photograph, 1 Diagram, 2 Charts, 9 Graphs; Document Type: Article L3 - 10.1063/1.4895768 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98652558&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lewis, William K. AU - Harruff-Miller, Barbara A. AU - Leatherman, Peter AU - Gord, Michael A. AU - Bunker, Christopher E. T1 - Helium droplet calorimetry of strongly bound species: Carbon clusters from C2 to C12. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2014/09// VL - 85 IS - 9 M3 - Article SP - 1 EP - 10 PB - American Institute of Physics SN - 00346748 AB - Helium droplet beam methods are a versatile technique that can be used to assemble a wide variety of atomic and molecular clusters. In recent years, methods have been developed to utilize helium droplets as nano-calorimeters to measure the binding energies of weakly bound complexes assembled within the droplet. In the current investigation we extend the helium droplet calorimetry approach to the study of a very strongly bound system: carbon clusters which are bound by several eV per atom. We utilize laser heating of bulk carbon samples to dope the helium droplets with evaporated carbon species. Depending on the laser target, the vaporization plume is found to consist primarily of C3 alone or C2 and C3. These species are sequentially captured by the droplet and assembled into larger carbon clusters in a stepwise manner. The assembled Cn clusters are detected via mass spec-trometry of the doped droplets and the droplet sizes required to detect the various carbon clusters observed are used to estimate the reaction energies of the associated assembly pathways. The helium droplet data qualitatively reflect the trends in assembly energetics, but at first glance appear to yield energies that differ dramatically from theoretical values. Statistical modeling of the helium droplet calorimetry experiment reconciles the differences quantitatively. Our modeling also generates a calibration curve that relates the assembly/reaction energy and threshold mean droplet size over a range of energies from van der Waals interactions to chemical bonding, enabling helium droplet calorimetry methods to be applied quantitatively to a large number of systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CALORIMETRY KW - RESEARCH KW - HELIUM KW - ATOMIC clusters KW - MOLECULAR clusters KW - CARBON N1 - Accession Number: 98652545; Lewis, William K. 1; Email Address: william.lewis.49@us.af.mil Harruff-Miller, Barbara A. 2 Leatherman, Peter 2 Gord, Michael A. 2 Bunker, Christopher E. 1; Email Address: christopher.bunker@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Energy Technology & Materials Division, University of Dayton Research Institute, Dayton, Ohio 45469, USA; Source Info: 2014, Vol. 85 Issue 9, p1; Subject Term: CALORIMETRY; Subject Term: RESEARCH; Subject Term: HELIUM; Subject Term: ATOMIC clusters; Subject Term: MOLECULAR clusters; Subject Term: CARBON; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 10p; Illustrations: 1 Color Photograph, 2 Charts, 7 Graphs; Document Type: Article L3 - 10.1063/1.4895670 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98652545&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chalise, Batu K. AU - Zhang, Yimin D. AU - Amin, Moeness G. AU - Himed, Braham T1 - Target localization in a multi-static passive radar system through convex optimization. JO - Signal Processing JF - Signal Processing Y1 - 2014/09// VL - 102 M3 - Article SP - 207 EP - 215 SN - 01651684 AB - Abstract: We propose efficient target localization methods for a passive radar system using time-of-arrival (TOA) information of the signals received from multiple illuminators, where the position of the receiver is subject to random errors. Since the maximum likelihood (ML) formulation of this target localization problem is a non-convex optimization problem, semi-definite relaxation (SDR)-based optimization methods in general do not provide satisfactory performance. As a result, approximated ML optimization problems are proposed and solved with SDR plus bisection methods. For the case without position error, it is shown that the relaxation guarantees a rank-one solution. The optimization problem for the case with position error involves only a relaxation of a scalar quadratic term. Simulation results show that the proposed algorithms outperform existing methods and provide root mean-square error performance very close to the Cramer–Rao lower bound. [Copyright &y& Elsevier] AB - Copyright of Signal Processing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR KW - CONVEX domains KW - MATHEMATICAL optimization KW - SIGNAL processing KW - ERRORS KW - MEAN square algorithms KW - Convex optimization KW - Passive radar KW - Radar signal processing KW - Semi-definite relaxation KW - Target localization N1 - Accession Number: 96186338; Chalise, Batu K. 1 Zhang, Yimin D. 1; Email Address: yimin.zhang@villanova.edu Amin, Moeness G. 1 Himed, Braham 2; Affiliation: 1: Wireless Communications and Positioning Laboratory, Center for Advanced Communications, Villanova University, Villanova, PA 19085, USA 2: Air Force Research Laboratory, AFRL/RYMD, Dayton, OH 45433, USA; Source Info: Sep2014, Vol. 102, p207; Subject Term: RADAR; Subject Term: CONVEX domains; Subject Term: MATHEMATICAL optimization; Subject Term: SIGNAL processing; Subject Term: ERRORS; Subject Term: MEAN square algorithms; Author-Supplied Keyword: Convex optimization; Author-Supplied Keyword: Passive radar; Author-Supplied Keyword: Radar signal processing; Author-Supplied Keyword: Semi-definite relaxation; Author-Supplied Keyword: Target localization; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.sigpro.2014.02.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96186338&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Clark, Michael D. AU - Maschmann, Matthew R. AU - Patel, Romesh J. AU - Leever, Benjamin J. T1 - Scratch resistance and durability enhancement of bulk heterojunction organic photovoltaics using ultra-thin alumina layers. JO - Solar Energy Materials & Solar Cells JF - Solar Energy Materials & Solar Cells Y1 - 2014/09// VL - 128 M3 - Article SP - 178 EP - 183 SN - 09270248 AB - Atomic layer deposition (ALD) was studied for ultra-thin (≤100 nm) barrier coating deposition onto organic photovoltaics (OPVs) to enhance device lifetime. Herein, we report the first known investigation of the mechanical characteristics of AlO x encapsulated OPVs using nanoindentation and scratch testing with deposition temperature as a tunable parameter. The higher organic content in the AlO x film, grown at lower temperatures, enhanced the interfacial bonding at the AlO x –OPV interface and provided modulus and hardness performance exceeding that of a common polymer encapsulant. Furthermore, AlO x ׳s organic content impeded fracture propagation, confirming the durability enhancement associated with this approach. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Energy Materials & Solar Cells is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM oxide KW - BULK solids KW - HETEROJUNCTIONS KW - PHOTOVOLTAIC power generation KW - DURABILITY KW - ATOMIC layer deposition KW - Atomic layer deposition KW - Encapsulation KW - Mechanical properties KW - Nanoindentation KW - Organic photovoltaics N1 - Accession Number: 98736218; Clark, Michael D. 1,2 Maschmann, Matthew R. 1,3 Patel, Romesh J. 1,2 Leever, Benjamin J. 1; Email Address: Benjamin.Leever@us.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: UES Inc., 4401 Dayton-Xenia Rd., Dayton, OH 45432, USA 3: Universal Technology Corporation, 1270 N. Fairfield Rd., Dayton, OH 45432, USA; Source Info: Sep2014, Vol. 128, p178; Subject Term: ALUMINUM oxide; Subject Term: BULK solids; Subject Term: HETEROJUNCTIONS; Subject Term: PHOTOVOLTAIC power generation; Subject Term: DURABILITY; Subject Term: ATOMIC layer deposition; Author-Supplied Keyword: Atomic layer deposition; Author-Supplied Keyword: Encapsulation; Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Nanoindentation; Author-Supplied Keyword: Organic photovoltaics; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 484222 Dry bulk materials trucking, local; NAICS/Industry Codes: 484232 Dry bulk materials trucking, long distance; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.solmat.2014.05.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98736218&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR T1 - Reported Concussion Rates for Three Division I Football Programs: An Evaluation of the New NCAA Concussion Policy. AU - Kilcoyne, Kelly G. AU - Dickens, Jonathan F. AU - Svoboda, Steven J. AU - Owens, Brett D. AU - Cameron, Kenneth L. AU - Sullivan, Robert T. AU - Rue, John-Paul JO - Sports Health: A Multidisciplinary Approach JF - Sports Health: A Multidisciplinary Approach Y1 - 2014/09// VL - 6 IS - 5 SP - 402 EP - 405 SN - 19417381 N1 - Accession Number: 97518198; Author: Kilcoyne, Kelly G.: 1 Author: Dickens, Jonathan F.: 2 Author: Svoboda, Steven J.: 3 Author: Owens, Brett D.: 3 Author: Cameron, Kenneth L.: 3 Author: Sullivan, Robert T.: 4 Author: Rue, John-Paul: 5 ; Author Affiliation: 1 Walter Reed National Military Medical Center, Bethesda, Maryland, Kelly.g.kilcoyne@us.army.mil: 2 Walter Reed National Military Medical Center, Bethesda, Maryland: 3 United States Military Academy, John A. Feagin, Jr. Sports Medicine Fellowship, Keller Army Hospital, West Point, New York: 4 United States Air Force Academy, Colorado Springs, Colorado: 5 United States Naval Academy, Annapolis, Maryland; No. of Pages: 4; Language: English; Publication Type: Article; Update Code: 20140819 N2 - The article focuses on a study that determine the number of concussions that occurred on 3 collegiate Division I military academy football teams prior and following changes in the National Collegiate Athletic Association (NCAA). Study reviewed injury reports from 3 Division I military academy football teams and found that combined concussion incidence rate doubled from 0.57 per 1000 athlete exposures. KW - *FOOTBALL teams KW - *SPORTS -- Societies, etc. KW - *FOOTBALL injuries KW - NATIONAL Collegiate Athletic Association KW - SOCIAL groups KW - concussion KW - incidence KW - mild traumatic brain injury KW - NCAA UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=97518198&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 2014-36378-001 AN - 2014-36378-001 AU - Poisson, Robert J. AU - Miller, Michael E. T1 - Spatial disorientation mishap trends in the U.S. Air Force 1993-2013. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2014/09// VL - 85 IS - 9 SP - 919 EP - 924 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Miller, Michael E., Department of Systems Engineering and Management, Air Force Institute of Technology, (AFIT), Wright Patterson AFB, OH, US, 45385 N1 - Accession Number: 2014-36378-001. PMID: 25197890 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Poisson, Robert J.; Air Education and Training Command, Columbus Air Force Base, Columbus, OH, US. Release Date: 20151207. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Aviation; Spatial Orientation (Perception). Minor Descriptor: Trends. Classification: Engineering & Environmental Psychology (4000). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. Page Count: 6. Issue Publication Date: Sep, 2014. Copyright Statement: Aerospace Medical Association, Alexandria, VA AB - Background: Spatial disorientation is a significant factor in a large percentage of military Class A aviation mishaps. While previous studies have analyzed accident statistics, they often suffer from methodological flaws, which lead to questionable conclusions. Methods: The current study relied upon the Air Force Safety Automated System to document U.S. Air Force Class A mishap investigations during the past 21 yr. Human Factors Analysis and Classification System codes were used to determine mishaps involving pilot spatial disorientation. The data were combined with data from the Reliability and Maintainability Information System to determine the accident rate per flight hour. Results: There were 72 spatial disorientation (SD) mishaps analyzed, resulting in loss of 101 lives and 65 aircraft since fiscal year (FY) 1993 for a total monetary cost of 2.32 billion. Class A mishaps involving spatial disorientation had a higher rate as a function of hours flown for helicopter and fighter/attack fixed wing aircraft than other aircraft. Additionally, mishap rates for F-16 fighter/attack aircraft were marginally larger than for other fighter/attack aircraft. Although SD mishaps at night had similar mishap rates to daytime SD mishaps when adjusted by flight hours, SD mishaps account for a larger percent of Class A mishaps during the night than during the day. Discussion: SD mishaps were analyzed in terms of Class A mishaps per million flight hours. Results indicate that future SD research should be focused on fighter/attack and helicopter platforms. Updates to the Air Force safety center database are recommended. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Aircraft mishaps KW - situation awareness KW - HFACS KW - 2014 KW - Air Force Personnel KW - Aviation KW - Spatial Orientation (Perception) KW - Trends KW - 2014 DO - 10.3357/ASEM.3971.2014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-36378-001&site=ehost-live&scope=site UR - ORCID: 0000-0001-6306-3437 UR - UR - michael.miller@afit.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Davis, Bradley AU - Welch, Katherine AU - Walsh-Hart, Sharon AU - Hanseman, Dennis AU - Petro, Michael AU - Gerlach, Travis AU - Dorlac, Warren AU - Collins, Jocelyn AU - Pritts, Timothy T1 - Effective Teamwork and Communication Mitigate Task Saturation in Simulated Critical Care Air Transport Team Missions. JO - Military Medicine JF - Military Medicine Y1 - 2014/08/02/Aug2014 Supplement VL - 179 IS - 8 M3 - Article SP - 19 EP - 23 PB - AMSUS SN - 00264075 AB - Background: Critical Care Air Transport Teams (CCATTs) are a critical component of the United States Air Force evacuation paradigm. This study was conducted to assess the incidence of task saturation in simulated CCATT missions and to determine if there are predictable performance domains. Methods: Sixteen CCATTs were studied over a 6-month period. Performance was scored using a tool assessing eight domains of performance. Teams were also assessed during critical events to determine the presence or absence of task saturation and its impact on patient care. Results: Sixteen simulated missions were reviewed and 45 crisis events identified. Task saturation was present in 22/45 (49%) of crisis events. Scoring demonstrated that task saturation was associated with poor performance in teamwork (odds ratio [OR] = 1.96), communication (OR = 2.08), and mutual performance monitoring (OR = 1.9), but not maintenance of guidelines, task management, procedural skill, and equipment management. We analyzed the effect of task saturation on adverse patient outcomes during crisis events. Adverse outcomes occurred more often when teams were task saturated as compared to non-task-saturated teams (91% vs. 23%; RR 4.1, p < 0.0001). Conclusions: Task saturation is observed in simulated CCATT missions. Nontechnical skills correlate with task saturation. Task saturation is associated with worsening physiologic derangements in simulated patients. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRITICAL care medicine -- Research KW - CIVILIAN evacuation -- Research KW - HEALTH care teams -- Research KW - TEAMS in the workplace -- Research KW - MISSIONARY medicine N1 - Accession Number: 97441831; Davis, Bradley 1; Welch, Katherine 1; Walsh-Hart, Sharon 2; Hanseman, Dennis 1; Petro, Michael 2; Gerlach, Travis 2; Dorlac, Warren 1; Collins, Jocelyn 1; Pritts, Timothy 1; Source Information: Aug2014 Supplement, Vol. 179 Issue 8, p19; Subject: CRITICAL care medicine -- Research; Subject: CIVILIAN evacuation -- Research; Subject: HEALTH care teams -- Research; Subject: TEAMS in the workplace -- Research; Subject: MISSIONARY medicine; Number of Pages: 5p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.7205/MILMED-D-13-00240 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=97441831&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Chterev, I. AU - Foley, C. W. AU - Foti, D. AU - Kostka, S. AU - Caswell, A. W. AU - Jiang, N. AU - Lynch, A. AU - Noble, D. R. AU - Menon, S. AU - Seitzman, J. M. AU - Lieuwen, T. C. T1 - Flame and Flow Topologies in an Annular Swirling Flow. JO - Combustion Science & Technology JF - Combustion Science & Technology Y1 - 2014/08// VL - 186 IS - 8 M3 - Article SP - 1041 EP - 1074 SN - 00102202 AB - This article describes an investigation of flame shapes and flow configurations in a premixed, swirl-stabilized dump combustor. High swirl, annular nozzle flows of this nature enable a variety of different flame configurations and heat release distributions with their associated flow fields. These differences are significant, since each of these configurations, in turn, has different thermoacoustic sensitivities and influences on combustor emissions, nozzle lifetime, and liner heating. These different configurations arise because multiple flame stabilization locations are present, associated with the inner and outer shear layers of the annulus, and the stagnation point of the vortex breakdown region. We present results from high-speed luminosity imaging, particle image velocimetry (PIV), and OH-planar laser induced fluorescence (PLIF) to illustrate time-averaged and instantaneous flame shapes and flow fields associated with the different configuration “families.” Selected cases are compared with large eddy simulations (LES). Particular emphasis is given to the distinctly different flame and flow topologies that exist in these flows, and their sensitivity to geometric (such as centerbody size and shape, combustor diameter, exhaust contraction) and operational (e.g., bulkhead temperature, preheat temperature, fuel/air ratio) parameters. We particularly emphasize the importance of the centerbody shape, and its associated impact on the structure of the central recirculating flow, as differentiating between two different families of flame shapes. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Combustion chambers KW - Flame KW - Topology KW - Annular flow (Fluid dynamics) KW - Swirling flow KW - Aerodynamics KW - Aerodynamically spiked centerbody KW - Annular swirl combustor KW - Bluff centerbody KW - OH-PLIF KW - PIV N1 - Accession Number: 96796447; Chterev, I. 1; Foley, C. W. 1; Foti, D. 1; Kostka, S. 2; Caswell, A. W. 2; Jiang, N. 2; Lynch, A. 3; Noble, D. R. 1; Menon, S. 1; Seitzman, J. M. 1; Lieuwen, T. C. 1; Affiliations: 1: Ben T. Zinn Combustion Laboratory, Georgia Institute of Technology, Atlanta, Georgia, USA; 2: Spectral Energies LLC, Dayton, Ohio, USA; 3: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, Ohio, USA; Issue Info: Aug2014, Vol. 186 Issue 8, p1041; Thesaurus Term: Combustion chambers; Subject Term: Flame; Subject Term: Topology; Subject Term: Annular flow (Fluid dynamics); Subject Term: Swirling flow; Subject Term: Aerodynamics; Author-Supplied Keyword: Aerodynamically spiked centerbody; Author-Supplied Keyword: Annular swirl combustor; Author-Supplied Keyword: Bluff centerbody; Author-Supplied Keyword: OH-PLIF; Author-Supplied Keyword: PIV; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 562210 Waste treatment and disposal; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; Number of Pages: 34p; Document Type: Article L3 - 10.1080/00102202.2014.882916 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=96796447&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Greenwood, Andrew D. AU - Christlieb, Andrew J. AU - Hoff, Brad W. AU - Heidger, Susan L. T1 - FDTD/Flux-Corrected Transport Model for Highly Non-Linear Dielectrics. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2014/08// Y1 - 2014/08// VL - 62 IS - 8 M3 - Article SP - 4365 EP - 4368 SN - 0018926X AB - Non-linear ferro-electric materials exhibit electromagnetic shock-forming properties which can be a challenge for electromagnetic modeling algorithms such as finite-difference time-domain (FDTD). If the material response time is sufficiently fast, the shock fronts steepen until the Nyquist sampling criteria is violated, and the resulting aliasing leads to spurious grid oscillations. A flux corrected transport (FCT) algorithm is adapted for use on the staggered FDTD mesh and effectively removes the spurious oscillations. Numerical results demonstrate the effectiveness of the algorithm. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FERROELECTRIC materials KW - ELECTROMAGNETIC waves KW - FINITE difference time domain method KW - REACTION time KW - SAMPLING theorem N1 - Accession Number: 97379591; Source Information: Aug2014, Vol. 62 Issue 8, p4365; Subject Term: FERROELECTRIC materials; Subject Term: ELECTROMAGNETIC waves; Subject Term: FINITE difference time domain method; Subject Term: REACTION time; Subject Term: SAMPLING theorem; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1109/TAP.2014.2322908 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=97379591&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - TILEY, J.S. AU - SHIVELEY, A.R. AU - PILCHAK, A.L. AU - SHADE, P.A. AU - GROEBER, M.A. T1 - 3D reconstruction of prior β grains in friction stir-processed Ti-6Al-4V. JO - Journal of Microscopy JF - Journal of Microscopy Y1 - 2014/08// VL - 255 IS - 2 M3 - Article SP - 71 EP - 77 SN - 00222720 AB - The prior β grain structure and orientations in the central stir zone of friction stir-processed Ti-6Al-4V were reconstructed from measured α phase orientations obtained by three-dimensional serial sectioning in a dual-beam focused ion beam scanning electron microscope. The data were processed to obtain the α colony and β grain size distributions in the volume. Several β grains were individually analysed to determine the total number of unique α variants and the respective volume fractions of each. The analysis revealed that some grains experienced overwhelming variant selection (i.e. one variant dominated) whereas other β grains contained a more evenly distributed mixture of all 12 variants. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microscopy is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMAGE reconstruction KW - FRICTION KW - TITANIUM-aluminum-vanadium alloys KW - ION beams KW - SCANNING electron microscopy KW - PARTICLE size distribution KW - 3D reconstruction KW - EBSD characterization KW - titanium alloys N1 - Accession Number: 97319766; TILEY, J.S. 1; SHIVELEY, A.R. 1,2; PILCHAK, A.L. 1; SHADE, P.A. 1; GROEBER, M.A. 1; Source Information: Aug2014, Vol. 255 Issue 2, p71; Subject: IMAGE reconstruction; Subject: FRICTION; Subject: TITANIUM-aluminum-vanadium alloys; Subject: ION beams; Subject: SCANNING electron microscopy; Subject: PARTICLE size distribution; Author-Supplied Keyword: 3D reconstruction; Author-Supplied Keyword: EBSD characterization; Author-Supplied Keyword: titanium alloys; Number of Pages: 7p; Illustrations: 1 Black and White Photograph, 5 Graphs; Document Type: Article L3 - 10.1111/jmi.12137 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=97319766&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 2014-45330-006 AN - 2014-45330-006 AU - Thomas, Robin D. AU - Moses, Nathan C. AU - Semple, Erin A. AU - Strang, Adam J. T1 - An efficient algorithm for the computation of average mutual information: Validation and implementation in Matlab. JF - Journal of Mathematical Psychology JO - Journal of Mathematical Psychology JA - J Math Psychol Y1 - 2014/08// VL - 61 SP - 45 EP - 59 CY - Netherlands PB - Elsevier Science SN - 0022-2496 SN - 1096-0880 AD - Thomas, Robin D., Department of Psychology, Miami University, OH, US N1 - Accession Number: 2014-45330-006. Partial author list: First Author & Affiliation: Thomas, Robin D.; Department of Psychology, Miami University, OH, US. Release Date: 20141117. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Algorithms; Information Processing Model; Statistical Estimation; Statistical Tests; Test Validity. Minor Descriptor: Mathematical Modeling; Normal Distribution; Random Sampling. Classification: Statistics & Mathematics (2240). Population: Human (10). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 15. Issue Publication Date: Aug, 2014. Publication History: Revised Date: Aug 20, 2014; First Submitted Date: Sep 14, 2012. Copyright Statement: Elsevier Inc. 2014. AB - Average mutual information (AMI) measures the dependence between pairs of random variables. It has been used in many applications including blind source separation, data mining, neural synchronicity assessment, and state space reconstruction in human movement studies. Presently, several algorithms and computational code exist to estimate AMI. However, most are difficult to use and/or understand the manner by which AMI is calculated. We offer a straightforward and implementable function in Matlab (Mathworks, Inc.) for the computation of AMI in relatively modest sized data streams ( N < ∼15,000 ). Our algorithm incorporates some best practices for statistical estimation that improves accuracy over other readily available options. We present three validation tests: (i) recovery of a known theoretical expected mutual information in a bivariate Gaussian random variable, (ii) invariance with respect to marginal distribution characteristics, and (iii) optimum time-delay selection in state space reconstruction. ©2014 Elsevier Inc. All rights reserved. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Mutual information KW - Numerical computation KW - Copula modeling KW - State-space reconstruction KW - 2014 KW - Algorithms KW - Information Processing Model KW - Statistical Estimation KW - Statistical Tests KW - Test Validity KW - Mathematical Modeling KW - Normal Distribution KW - Random Sampling KW - 2014 DO - 10.1016/j.jmp.2014.09.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-45330-006&site=ehost-live&scope=site UR - thomasrd@miamioh.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2014-33622-002 AN - 2014-33622-002 AU - Parasuraman, Raja AU - McKinley, Richard A. T1 - Using noninvasive brain stimulation to accelerate learning and enhance human performance. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2014/08// VL - 56 IS - 5 SP - 816 EP - 824 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Parasuraman, Raja, George Mason University, 4400 University Drive, Fairfax, VA, US, 22030-4444 N1 - Accession Number: 2014-33622-002. PMID: 25141590 Partial author list: First Author & Affiliation: Parasuraman, Raja; George Mason University, Fairfax, VA, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20140818. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Parasuraman, Raja. Major Descriptor: Cognition; Learning; Neural Plasticity; Transcranial Magnetic Stimulation. Classification: Specialized Interventions (3350). Population: Human (10). Tests & Measures: Threat Detection Task; Image Analysis Task. References Available: Y. Page Count: 9. Issue Publication Date: Aug, 2014. Publication History: Accepted Date: May 11, 2014; First Submitted Date: Mar 22, 2014. Copyright Statement: Human Factors and Ergonomics Society. 2014. AB - Objective: The authors evaluate the effectiveness of noninvasive brain stimulation, in particular, transcranial direct current stimulation (tDCS), for accelerating learning and enhancing human performance on complex tasks. Background: Developing expertise in complex tasks typically requires extended training and practice. Neuroergonomics research has suggested new methods that can accelerate learning and boost human performance. TDCS is one such method. It involves the application of a weak DC current to the scalp and has the potential to modulate brain networks underlying the performance of a perceptual, cognitive, or motor task. Method: Examples of tDCS studies of declarative and procedural learning are discussed. This mini-review focuses on studies employing complex simulations representative of surveillance and security operations, intelligence analysis, and procedural learning in complex monitoring. Results: The evidence supports the view that tDCS can accelerate learning and enhance performance in a range of complex cognitive tasks. Initial findings also suggest that such benefits can be retained over time, but additional research is needed on training schedules and transfer of training. Conclusion: Noninvasive brain stimulation can accelerate skill acquisition in complex tasks and may provide an alternative or addition to other training methods. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - noninvasive brain stimulation KW - transcranial direct current stimulation KW - procedural and declarative learning KW - cognition KW - cognitive work tasks KW - brain plasticity KW - 2014 KW - Cognition KW - Learning KW - Neural Plasticity KW - Transcranial Magnetic Stimulation KW - 2014 U1 - Sponsor: Air Force Office of Scientific Research (AFSOR), US. Grant: FA9550-10-1-0385. Recipients: Parasuraman, Raja U1 - Sponsor: Air Force Office of Scientific Research (AFSOR). Grant: 14RH03COR. Recipients: McKinley, Richard A. DO - 10.1177/0018720814538815 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-33622-002&site=ehost-live&scope=site UR - rparasur@gmu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2014-33622-012 AN - 2014-33622-012 AU - Campbell, Bryan A. AU - Tossell, Chad C. AU - Byrne, Michael D. AU - Kortum, Philip T1 - Toward more usable electronic voting: Testing the usability of a smartphone voting system. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2014/08// VL - 56 IS - 5 SP - 973 EP - 985 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Byrne, Michael D., Rice University, Psychology Department, MS-25, 6100 Main St., Houston, TX, US, 77005 N1 - Accession Number: 2014-33622-012. PMID: 25141600 Partial author list: First Author & Affiliation: Campbell, Bryan A.; Rice University, Houston, TX, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20140818. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Human Machine Systems Design; Voting Behavior; Cellular Phones. Classification: Human Factors Engineering (4010). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360); Aged (65 yrs & older) (380). Tests & Measures: System Usability Scale. Methodology: Empirical Study; Quantitative Study. Supplemental Data: Other Internet. References Available: Y. Page Count: 13. Issue Publication Date: Aug, 2014. Publication History: Accepted Date: Nov 13, 2013; First Submitted Date: Jul 21, 2012. Copyright Statement: Human Factors and Ergonomics Society. 2014. AB - Objective: The goal of this research was to assess the usability of a voting system designed for smartphones. Background: Smartphones offer remote participation in elections through the use of pervasive technology. Voting on these devices could, among other benefits, increase voter participation while allowing voters to use familiar technology. However, the usability of these systems has not been assessed. Method: A mobile voting system optimized for use on a smartphone was designed and tested against traditional voting platforms for usability. Results: There were no reliable differences between the smartphone-based system and other voting methods in efficiency and perceived usability. More important, though, smartphone owners committed fewer errors on the mobile voting system than on the traditional voting systems. Conclusion: Even with the known limitations of small mobile platforms in both displays and controls, a carefully designed system can provide a usable voting method. Much of the concern about mobile voting is in the area of security; therefore, although these results are promising, security concerns and usability issues arising from mitigating them must be strongly considered. Application: The results of this experiment may help to inform current and future election and public policy officials about the benefits of allowing voters to vote with familiar hardware. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - interface KW - usability KW - smartphones KW - voting system KW - 2014 KW - Human Machine Systems Design KW - Voting Behavior KW - Cellular Phones KW - 2014 U1 - Sponsor: National Science Foundation, US. Grant: CNS-0524211; CNS-1049723. Recipients: No recipient indicated DO - 10.1177/0018720813519266 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-33622-012&site=ehost-live&scope=site UR - byrne@rice.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Miller, Warner AU - McDonald, Jonathan AU - Alsing, Paul AU - Gu, David AU - Yau, Shing-Tung T1 - Simplicial Ricci Flow. JO - Communications in Mathematical Physics JF - Communications in Mathematical Physics J1 - Communications in Mathematical Physics PY - 2014/07/15/ Y1 - 2014/07/15/ VL - 329 IS - 2 M3 - Article SP - 579 EP - 608 PB - Springer Science & Business Media B.V. SN - 00103616 AB - We construct a discrete form of Hamilton's Ricci flow (RF) equations for a d-dimensional piecewise flat simplicial geometry, $${{\mathcal S}}$$ . These new algebraic equations are derived using the discrete formulation of Einstein's theory of general relativity known as Regge calculus. A Regge-Ricci flow (RRF) equation can be associated to each edge, ℓ, of a simplicial lattice. In defining this equation, we find it convenient to utilize both the simplicial lattice $${{\mathcal S}}$$ and its circumcentric dual lattice, $${{\mathcal S}^*}$$ . In particular, the RRF equation associated to ℓ is naturally defined on a d-dimensional hybrid block connecting ℓ with its ( d−1)-dimensional circumcentric dual cell, ℓ. We show that this equation is expressed as the proportionality between (1) the simplicial Ricci tensor, Rc, associated with the edge $${\ell\in{\mathcal S}}$$ , and (2) a certain volume weighted average of the fractional rate of change of the edges, $${\lambda\in \ell^*}$$ , of the circumcentric dual lattice, $${{\mathcal S}^*}$$ , that are in the dual of ℓ. The inherent orthogonality between elements of $${\mathcal S}$$ and their duals in $${{\mathcal S}^*}$$ provide a simple geometric representation of Hamilton's RF equations. In this paper we utilize the well established theories of Regge calculus, or equivalently discrete exterior calculus, to construct these equations. We solve these equations for a few illustrative examples. [ABSTRACT FROM AUTHOR] AB - Copyright of Communications in Mathematical Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RICCI flow KW - ALGEBRAIC equations KW - EINSTEIN'S theory of solids KW - GENERAL relativity (Physics) KW - PIECEWISE linear topology KW - LATTICE theory N1 - Accession Number: 96151681; Source Information: Jul2014, Vol. 329 Issue 2, p579; Subject Term: RICCI flow; Subject Term: ALGEBRAIC equations; Subject Term: EINSTEIN'S theory of solids; Subject Term: GENERAL relativity (Physics); Subject Term: PIECEWISE linear topology; Subject Term: LATTICE theory; Subject Term: ; Number of Pages: 30p; ; Document Type: Article; L3 - 10.1007/s00220-014-1911-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=96151681&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Holcomb, Trae T1 - Constructing 2 × 2 Bricks from Unitary Numerical Semigroups. JO - Communications in Algebra JF - Communications in Algebra J1 - Communications in Algebra PY - 2014/07// Y1 - 2014/07// VL - 42 IS - 7 M3 - Article SP - 2928 EP - 2938 PB - Taylor & Francis Ltd SN - 00927872 AB - This paper investigates numerical semigroups that yield 2 × 2 bricks. We demonstrate the existence of an infinite family of 2 × 2 bricks that includes all of the perfect 2 × 2 bricks. We provide a formula for the Frobenius numbers of these semigroups as well as a necessary and sufficient condition for the semigroups to be symmetric. [ABSTRACT FROM AUTHOR] AB - Copyright of Communications in Algebra is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UNITARY groups KW - NUMERICAL analysis KW - EXISTENCE theorems KW - INFINITE groups KW - FROBENIUS algebras KW - SEMIGROUPS (Algebra) KW - SET theory N1 - Accession Number: 94908835; Source Information: Jul2014, Vol. 42 Issue 7, p2928; Subject Term: UNITARY groups; Subject Term: NUMERICAL analysis; Subject Term: EXISTENCE theorems; Subject Term: INFINITE groups; Subject Term: FROBENIUS algebras; Subject Term: SEMIGROUPS (Algebra); Subject Term: SET theory; Subject Term: ; Number of Pages: 11p; ; Document Type: Article; L3 - 10.1080/00927872.2013.774408 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=94908835&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Bohn, Scott T1 - Russia's Afghanistan Policy: An Irresolute Strategy for an Uncertain Future. JO - Comparative Strategy JF - Comparative Strategy Y1 - 2014/07//Jul/Aug2014 VL - 33 IS - 3 M3 - Article SP - 205 EP - 221 SN - 01495933 AB - Russia's policy toward Afghanistan is at a critical juncture. This article aims to explain the evolution of Moscow's policy since 2001, and to assess its future options. The findings of this article are twofold. Moscow attempted to balance two overarching objectives: stabilize Afghanistan and maintain Russia's hegemony in Central Asia. Russian fluctuations toward Afghanistan since 2001 stemmed from changes in its perceived interests and its prioritization of these two objectives. Furthermore, Moscow is becoming increasingly concerned about Afghanistan. However, it has relatively few realistic policy options to address challenges that may develop once international military forces cease major combat operations. [ABSTRACT FROM PUBLISHER] AB - Copyright of Comparative Strategy is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERNATIONAL relations KW - RUSSIA -- Foreign relations -- 1991- KW - AFGHANISTAN -- Foreign relations KW - HEGEMONY KW - ARMED Forces N1 - Accession Number: 97226518; Bohn, Scott 1; Affiliations: 1: United States Air Force Reserve, Washington, DC, USA; Issue Info: Jul/Aug2014, Vol. 33 Issue 3, p205; Thesaurus Term: INTERNATIONAL relations; Subject Term: RUSSIA -- Foreign relations -- 1991-; Subject Term: AFGHANISTAN -- Foreign relations; Subject Term: HEGEMONY; Subject Term: ARMED Forces; NAICS/Industry Codes: 928120 International Affairs; NAICS/Industry Codes: 911410 Foreign affairs; Number of Pages: 17p; Document Type: Article L3 - 10.1080/01495933.2014.926718 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=97226518&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Kammerdiner, A.R. AU - Pasiliao, E.L. T1 - In and out forests on combinatorial landscapes. JO - European Journal of Operational Research JF - European Journal of Operational Research Y1 - 2014/07// VL - 236 IS - 1 M3 - Article SP - 78 EP - 84 SN - 03772217 AB - Highlights: [•] We model fitness landscape of combinatorial optimization problem as a digraph. [•] We study in forests and out forests of the combinatorial landscape’s digraph. [•] We extend earlier digraph result to include out forests and column Laplacians. [•] We establish the relation of local optima and the weak components of forests. [•] We prove local optima numbers equal eigenvalue multiplicities of forest Laplacians. [ABSTRACT FROM AUTHOR] AB - Copyright of European Journal of Operational Research is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPERATIONS research KW - COMBINATORIAL optimization KW - DIRECTED graphs KW - LAPLACIAN matrices KW - EIGENVALUES KW - LANDSCAPES KW - Directed graph KW - Fitness landscape KW - In forest (spanning converging forest) KW - Local optima KW - Local search KW - Out forest (spanning diverging forest) N1 - Accession Number: 94788613; Kammerdiner, A.R. 1; Email Address: alla@nmsu.edu; Pasiliao, E.L. 2; Affiliations: 1: Department of Industrial Engineering, New Mexico State University, Las Cruces, NM 88003, United States; 2: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, United States; Issue Info: Jul2014, Vol. 236 Issue 1, p78; Thesaurus Term: OPERATIONS research; Subject Term: COMBINATORIAL optimization; Subject Term: DIRECTED graphs; Subject Term: LAPLACIAN matrices; Subject Term: EIGENVALUES; Subject Term: LANDSCAPES; Author-Supplied Keyword: Directed graph; Author-Supplied Keyword: Fitness landscape; Author-Supplied Keyword: In forest (spanning converging forest); Author-Supplied Keyword: Local optima; Author-Supplied Keyword: Local search; Author-Supplied Keyword: Out forest (spanning diverging forest); NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ejor.2013.11.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=94788613&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Park, James AU - Johnson, Joel AU - Majurec, Ninoslav AU - Frankford, Mark AU - Stewart, Kyle AU - Smith, Graeme AU - Westbrook, Lamar T1 - Simulation and analysis of polarimetric radar signatures of human gaits. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2014/07// VL - 50 IS - 3 M3 - Article SP - 2164 EP - 2175 SN - 00189251 AB - Radar observations of human activities have a variety of applications in security, defense, and rescue operations. Range-Doppler signatures of human motions are a useful tool for retrieving information on observed activities but require an understanding of the scattering processes involved to enable interpretation. This paper presents a study of human Doppler signatures using simulations, in particular focusing on the impact of the polarization to enable an understanding of any advantages in the use of polarimetric radar. The simulation model utilized is based on an approximate scattering approach combined with a 12-cylinder description of the human body. A comparison with single polarization co-pol measurements is used to show that the model provides reasonable first-order predictions of human signatures. Further simulations for polarimetric signatures illustrate the differing contributions of individual body parts to micro-Doppler returns and suggest that multi-polarization measurements can be useful in future micro-Doppler radar systems for human observation. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFORMATION retrieval KW - RADAR polarimetry KW - GAIT in humans KW - DOPPLER radar KW - COMPUTER simulation KW - Computational modeling KW - Doppler effect KW - Doppler radar KW - Legged locomotion KW - Predictive models KW - Radar polarimetry N1 - Accession Number: 100028153; Park, James 1; Johnson, Joel 2; Majurec, Ninoslav 2; Frankford, Mark 2; Stewart, Kyle 2; Smith, Graeme 2; Westbrook, Lamar 1; Affiliations: 1: Air Force Research Laboratory; 2: The Ohio State University, Electrical and Computer Engineering; Issue Info: Jul2014, Vol. 50 Issue 3, p2164; Thesaurus Term: INFORMATION retrieval; Subject Term: RADAR polarimetry; Subject Term: GAIT in humans; Subject Term: DOPPLER radar; Subject Term: COMPUTER simulation; Author-Supplied Keyword: Computational modeling; Author-Supplied Keyword: Doppler effect; Author-Supplied Keyword: Doppler radar; Author-Supplied Keyword: Legged locomotion; Author-Supplied Keyword: Predictive models; Author-Supplied Keyword: Radar polarimetry; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TAES.2014.120792 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=100028153&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Musselman, Randall L. AU - Norgard, John D. T1 - Semi-Analytic Solution to Forward Scattering From a Long Conductive Strip. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2014/07// Y1 - 2014/07// VL - 62 IS - 7 M3 - Article SP - 3702 EP - 3713 SN - 0018926X AB - A semi-analytic model is developed that accurately describes the scattered electromagnetic field (including both reflection and diffraction) from a long conductive strip, which is on the order of a wavelength wide. When the dimension of this conductor is on the order of a wavelength, the gross approximations used for ray-tracing models cannot be used, because the scattering object does not satisfy the assumption that it is electrically large, resulting in a vanishing wavelength. Unlike ray-tracing techniques, this model completely describes the field diffracted around and behind the conductive obstruction, creating the null that is commonly called the “shadow” from an illuminated object. The only assumption made is that the strip is relatively long, compared to its width and to the wavelength. When simulations from this analytic model are compared to simulations from an established numerical model, it is found that this analytic model provides accuracy comparable to numeric methods, without the extensive computational intensity involved in numerical solutions. Furthermore, simulated field patterns from this analytic diffraction model are compared to 2-D measured patterns, resulting in close agreement. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL diffraction -- Research KW - ELECTROMAGNETIC wave scattering -- Research KW - HUYGENS' principle -- Research KW - THEORY of wave motion -- Research KW - ELECTROMAGNETIC fields -- Research N1 - Accession Number: 97010923; Source Information: Jul2014, Vol. 62 Issue 7, p3702; Subject Term: OPTICAL diffraction -- Research; Subject Term: ELECTROMAGNETIC wave scattering -- Research; Subject Term: HUYGENS' principle -- Research; Subject Term: THEORY of wave motion -- Research; Subject Term: ELECTROMAGNETIC fields -- Research; Subject Term: ; Number of Pages: 12p; ; Document Type: Article; L3 - 10.1109/TAP.2014.2317473 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=97010923&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Stanford, Bret T1 - Three-Dimensional Topologies of Compliant Flapping Mechanisms. JO - Journal of Aerospace Engineering JF - Journal of Aerospace Engineering J1 - Journal of Aerospace Engineering PY - 2014/07//Jul/Aug2014 Y1 - 2014/07//Jul/Aug2014 VL - 27 IS - 4 M3 - Article SP - 1 EP - 7 SN - 08931321 AB - This paper outlines the use of a three-dimensional topology optimization scheme for the conceptual design of compliant flapping micro air vehicle mechanisms. Each trilinear finite element within the design domain is assigned to a density variable that smoothly interpolates between 0 (void) and 1 (solid), using a well-known methodology. A mechanism topology is found that converts a series of sinusoidal actuation point loads along the lower surface into a dynamic structural deformation, which in turn provides the desired flapping kinematics. Specifically, a mechanism is desired that can independently control more than one flapping rotation (i.e., flapping and feathering) at the same time. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerospace Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICRO air vehicles KW - MATHEMATICAL optimization KW - FINITE element method KW - AXIAL loads KW - DEFORMATIONS (Mechanics) N1 - Accession Number: 96698449; Source Information: Jul/Aug2014, Vol. 27 Issue 4, p1; Subject Term: MICRO air vehicles; Subject Term: MATHEMATICAL optimization; Subject Term: FINITE element method; Subject Term: AXIAL loads; Subject Term: DEFORMATIONS (Mechanics); Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1061/(ASCE)AS.1943-5525.0000347 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=96698449&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Harnish, D. AU - Heimbuch, B.K. AU - McDonald, M. AU - Kinney, K. AU - Dion, M. AU - Stote, R. AU - Rastogi, V. AU - Smith, L. AU - Wallace, L. AU - Lumley, A. AU - Schreuder-Gibson, H. AU - Wander, J.D. T1 - Standard method for deposition of dry, aerosolized, silica-coated Bacillus spores onto inanimate surfaces. JO - Journal of Applied Microbiology JF - Journal of Applied Microbiology Y1 - 2014/07// VL - 117 IS - 1 M3 - Article SP - 40 EP - 49 PB - Wiley-Blackwell SN - 13645072 AB - Aims To evaluate a standard aerosolization method for uniformly depositing threat-representative spores onto surfaces. Methods and Results Lyophilized Bacillus anthracis ΔSterne spores, coated in silica, were aerosolized into a containment chamber and deposited onto nine surface types by two independent laboratories. Laboratory A produced a mean loading concentration of 1·78 × 105 CFU cm−2; coefficient of variation ( CV) was <40% for 96% of samples. Laboratory B produced a mean loading concentration of 7·82 × 106 CFU cm−2; 68% of samples demonstrated CV <40%. Conclusions This method has been shown to meet the goal of loading threat-representative spores onto surfaces with low variability at concentrations relevant to the Department of Defense. Significance and Impact of the Study As demonstrated in 2001, a biological attack using anthrax disseminated as a dry powder is a credible threat. This method will provide a means to load spores onto surfaces that mimic a 'real-world' scenario of an aerosolized anthrax attack. The method has utility for evaluating sporicidal technologies and for nondecontamination studies, for example fate and transport or reaerosolization. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Microbiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Bacillus anthracis KW - Biotechnology KW - Aerosols (Sprays) KW - Sedimentation & deposition KW - Bacillus (Bacteria) KW - Data analysis -- Methodology KW - aerosol KW - anthrax KW - antimicrobial KW - Bacillus KW - bioaerosol KW - deposition KW - infectious agents KW - spores N1 - Accession Number: 96533779; Harnish, D. 1; Heimbuch, B.K. 1; McDonald, M. 1; Kinney, K. 1; Dion, M. 2; Stote, R. 2; Rastogi, V. 3; Smith, L. 3; Wallace, L. 3; Lumley, A. 1; Schreuder-Gibson, H. 2; Wander, J.D. 4; Affiliations: 1: Engineering Science Division, Applied Research Associates; 2: U.S. Army Natick Soldier Research, Development, and Engineering Center; 3: Biodefense Branch, Edgewood Chemical Biological Center; 4: Air Force Research Laboratory,; Issue Info: Jul2014, Vol. 117 Issue 1, p40; Thesaurus Term: RESEARCH; Thesaurus Term: Bacillus anthracis; Thesaurus Term: Biotechnology; Subject Term: Aerosols (Sprays); Subject Term: Sedimentation & deposition; Subject Term: Bacillus (Bacteria); Subject Term: Data analysis -- Methodology; Author-Supplied Keyword: aerosol; Author-Supplied Keyword: anthrax; Author-Supplied Keyword: antimicrobial; Author-Supplied Keyword: Bacillus; Author-Supplied Keyword: bioaerosol; Author-Supplied Keyword: deposition; Author-Supplied Keyword: infectious agents; Author-Supplied Keyword: spores; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 10p; Illustrations: 2 Diagrams, 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1111/jam.12509 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=96533779&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 103965409 T1 - Evaluation of Lauge-Hansen Designation of Weber C Fractures. AU - Hinds, Richard M. AU - Schottel, Patrick C. AU - Berkes, Marschall B. AU - Little, Milton T.M. AU - Helfet, David L. AU - Lorich, Dean G. Y1 - 2014/07//Jul/Aug2014 N1 - Accession Number: 103965409. Language: English. Entry Date: 20140703. Revision Date: 20150710. Publication Type: Journal Article; research. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Perioperative Care. Instrumentation: Lauge-Hansen Classification. NLM UID: 9308427. KW - Ankle Fractures -- Classification KW - Pronation KW - Supination KW - Ankle Fractures -- Surgery KW - Clinical Assessment Tools KW - Scales KW - Retrospective Design KW - Record Review KW - Comparative Studies KW - Descriptive Statistics KW - P-Value KW - Female KW - Male KW - Human SP - 434 EP - 439 JO - Journal of Foot & Ankle Surgery JF - Journal of Foot & Ankle Surgery JA - J FOOT ANKLE SURG VL - 53 IS - 4 CY - Philadelphia, Pennsylvania PB - W B Saunders AB - Abstract: Associations between Weber C ankle fractures and pronation external rotation (PER) injuries of the Lauge-Hansen classification have often been incorrectly correlated. The purpose of the present study was to evaluate the Lauge-Hansen designation of Weber C fractures by establishing the proportion of Weber C fractures that are supination external rotation (SER), supination adduction (SA), pronation abduction (PA), PER, and hyperplantarflexion variant fractures. A clinical database of operative ankle fractures treated by the senior author (D.G.L.) was reviewed. The inclusion criteria were patient age older than 16 years, preoperative ankle radiographs, and Weber C fracture designation. A total of 132 patients met the inclusion criteria, and the proportion of PA, PER, SER, SA, and variant fractures among the Weber C fractures was analyzed. PA fractures accounted for 0.8% (n = 1), PER fractures 56.8% (n = 75), SER fractures 35.6% (n = 47), and hyperplantarflexion variant fractures 6.8% (n = 9) of the 132 Weber C fractures. Patients with Weber C-PER fractures were more commonly male (p = .005) and younger (p = .003) and demonstrated a greater fibular fracture height (p < .001) than those with Weber C-SER and Weber C-variant fractures. Our study quantitatively demonstrated that not all Weber C fractures occur secondary to pronation injuries. This distinction is important, because all pronation injuries will demonstrate medial ankle injury, but SER and variant fractures might not. We therefore recommend careful evaluation of the fibular fracture characteristics, including the direction of fracture propagation and the distance from the tibial plafond, when classifying Weber C fractures using the Lauge-Hansen system, because correct classification is vital in preparation for appropriate operative treatment. SN - 1067-2516 AD - Research Fellow, Orthopaedic Trauma Service, Hospital for Special Surgery, New York, NY AD - Orthopaedic Resident, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY AD - Orthopaedic Surgeon, United States Air Force, Landstuhl Regional Medical Center, Landstuhl, Germany AD - Orthopaedic Trauma Fellow, Harborview Medical Center, Seattle, WA AD - Director, Orthopaedic Trauma Service, Hospital for Special Surgery, New York, NY AD - Associate Director, Orthopaedic Trauma Service, Hospital for Special Surgery and New York Presbyterian Hospital, New York, NY U2 - PMID: 24795207. DO - 10.1053/j.jfas.2014.03.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=103965409&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Bateman, Aaron T1 - The Political Influence of the Russian Security Services. JO - Journal of Slavic Military Studies JF - Journal of Slavic Military Studies Y1 - 2014/07//Jul-Sep2014 VL - 27 IS - 3 M3 - Article SP - 380 EP - 403 SN - 13518046 AB - The Komitet gosudarstvennoy bezopasnosti (KGB)has been preserved under the new names of the post-Soviet security services, particularly the Federal’naia sluzhba bezopasnosti (FSB).The continuities between the Soviet and post-Soviet security institutions, coupled with the chaos following the collapse of the Soviet Union, have produced a post-Soviet Russia that has strayed away from democracy and developed into a counterintelligence state. Former Soviet security services officers are the ruling elite in modern Russia. The post-Soviet security apparatus is one of the most influential institutions in the formation of Russia’s foreign policy, and the domestic security situation in Russia directly affects its foreign policy toward the United States. The post-Soviet security apparatus has significantly influenced Russia’s departure from democracy and pursuance of a hostile foreign policy toward the United States. [ABSTRACT FROM PUBLISHER] AB - Copyright of Journal of Slavic Military Studies is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTELLIGENCE service -- Russia KW - INTELLIGENCE officers KW - INFLUENCE (Psychology) KW - CONTROL (Psychology) KW - POWER (Social sciences) KW - RUSSIA -- Foreign relations -- United States KW - SOVIET Union. Komitet gosudarstvennoi bezopasnosti KW - FEDERALNAIA sluzhba bezopasnosti Rossii N1 - Accession Number: 97130091; Bateman, Aaron 1; Affiliations: 1 : United States Air Force; Source Info: Jul-Sep2014, Vol. 27 Issue 3, p380; Historical Period: 1991 to 2014; Subject Term: INTELLIGENCE service -- Russia; Subject Term: INTELLIGENCE officers; Subject Term: INFLUENCE (Psychology); Subject Term: CONTROL (Psychology); Subject Term: POWER (Social sciences); Subject Term: RUSSIA -- Foreign relations -- United States; Number of Pages: 24p; Document Type: Article L3 - 10.1080/13518046.2014.932626 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hia&AN=97130091&site=ehost-live&scope=site DP - EBSCOhost DB - hia ER - TY - JOUR AU - Skrabut, Stanley A.1,2 T1 - Digital Leadership: Changing Paradigms for Changing Times. JO - MPAEA Journal of Adult Education JF - MPAEA Journal of Adult Education J1 - MPAEA Journal of Adult Education PY - 2014/07// Y1 - 2014/07// VL - 43 IS - 2 CP - 2 M3 - Book Review SP - 26 EP - 27 SN - 00904244 KW - Educational technology KW - Nonfiction KW - Sheninger, E. C. KW - Digital Leadership: Changing Paradigms for Changing Times (Book) N1 - Accession Number: 111483377; Authors:Skrabut, Stanley A. 1,2; Affiliations: 1: United States Air Force, Hobart and William Smith Colleges; 2: University of Wyoming; Subject: Digital Leadership: Changing Paradigms for Changing Times (Book); Subject: Sheninger, E. C.; Subject: Educational technology; Subject: Nonfiction; Number of Pages: 2p; Record Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=111483377&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR AU - Flores-Abad, Angel AU - Ma, Ou AU - Pham, Khanh AU - Ulrich, Steve T1 - A review of space robotics technologies for on-orbit servicing. JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences J1 - Progress in Aerospace Sciences PY - 2014/07// Y1 - 2014/07// VL - 68 M3 - Article SP - 1 EP - 26 SN - 03760421 AB - Abstract: Space robotics is considered one of the most promising approaches for on-orbit servicing (OOS) missions such as docking, berthing, refueling, repairing, upgrading, transporting, rescuing, and orbital debris removal. Many enabling techniques have been developed in the past two decades and several technology demonstration missions have been completed. A number of manned on-orbit servicing missions were successfully accomplished but unmanned, fully autonomous, servicing missions have not been done yet. Furthermore, all previous unmanned technology demonstration missions were designed to service cooperative targets only. Robotic servicing of a non-cooperative satellite is still an open research area facing many technical challenges. One of the greatest challenges is to ensure the servicing spacecraft safely and reliably docks with the target spacecraft or capture the target to stabilize it for subsequent servicing. This is especially important if the target has an unknown motion and kinematics/dynamics properties. Obviously, further research and development of the enabling technologies are needed. To motivate and facilitate such research and development, this paper provides a literature review of the recently developed technologies related to the kinematics, dynamics, control and verification of space robotic systems for manned and unmanned on-orbit servicing missions. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE robotics KW - SPACE vehicles -- Orbital assembly KW - SPACE flights KW - SPACE debris KW - SPACE vehicles -- Docking KW - KINEMATICS N1 - Accession Number: 95721903; Source Information: Jul2014, Vol. 68, p1; Subject Term: SPACE robotics; Subject Term: SPACE vehicles -- Orbital assembly; Subject Term: SPACE flights; Subject Term: SPACE debris; Subject Term: SPACE vehicles -- Docking; Subject Term: KINEMATICS; Subject Term: ; Number of Pages: 26p; ; Document Type: Article; L3 - 10.1016/j.paerosci.2014.03.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=95721903&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2014-34232-007 AN - 2014-34232-007 AU - Smith, Tyler C. AU - LeardMann, Cynthia A. AU - Smith, Besa AU - Jacobson, Isabel G. AU - Miller, Shannon C. AU - Wells, Timothy S. AU - Boyko, Edward J. AU - Ryan, Margaret A. K. T1 - Longitudinal assessment of mental disorders, smoking, and hazardous drinking among a population-based cohort of US service members. JF - Journal of Addiction Medicine JO - Journal of Addiction Medicine JA - J Addict Med Y1 - 2014/07//Jul-Aug, 2014 VL - 8 IS - 4 SP - 271 EP - 281 CY - US PB - Lippincott Williams & Wilkins SN - 1932-0620 SN - 1935-3227 AD - LeardMann, Cynthia A., Deployment Health Research Department, Naval Health Research Center, 140 Sylvester Rd., San Diego, CA, US, 92106 N1 - Accession Number: 2014-34232-007. PMID: 24950137 Partial author list: First Author & Affiliation: Smith, Tyler C.; Deployment Health Research Department, Naval Health Research Center, San Diego, CA, US. Release Date: 20140929. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Alcohol Abuse; Mental Disorders; Tobacco Smoking. Minor Descriptor: Military Personnel. Classification: Psychological Disorders (3210); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Alcohol Use Disorders Identification Test DOI: 10.1037/t01528-000; Patient Health Questionnaire DOI: 10.1037/t02598-000; PTSD Checklist—Civilian Version DOI: 10.1037/t02622-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 11. Issue Publication Date: Jul-Aug, 2014. Publication History: Accepted Date: Apr 28, 2014; First Submitted Date: Jan 29, 2014. Copyright Statement: Unauthorized reproduction of this article is prohibited. American Society of Addiction Medicine. 2014. AB - Objectives: Combat exposure is known to increase the risk for mental disorders; however, less is known about the temporal relationship between mental disorders and alcohol misuse or smoking. To better understand these interrelationships, this study investigated mental disorders in association with hazardous drinking and cigarette smoking. Methods: Using data from a large population-based military cohort, standardized instruments were used to screen for posttraumatic stress disorder, depression, panic, and other anxiety syndromes. Self-reported use of cigarettes and hazardous drinking was also assessed. Subjects were classified as having 'new-onset,' 'persistent,' or 'resolved' mental disorders and health risk behaviors on the basis of screening results from baseline to follow-up (n = 50,028). Multivariable logistic regression models were used to investigate temporal patterns between the development of mental disorders and the uptake of smoking or hazardous drinking. Results: The strongest associations of new-onset mental disorders were among those who newly reported smoking or hazardous drinking (odds ratio [OR], 1.82; 95% confidence interval [CI], 1.28-2.59 and OR, 2.49; 95% CI, 2.15-2.89, respectively), even after adjustment for combat deployment experience. In addition, persistent smokers and hazardous drinkers had elevated odds for developing a mental disorder at follow-up. Conclusions: This study demonstrates a positive association between the onset of mental disorders with the uptake of smoking and hazardous drinking and the likelihood that multiple temporal sequence patterns exist to explain the relationship between mental disorders and hazardous drinking and smoking. Clinical approaches to mitigate deployment-related mental disorders should include alcohol and tobacco-related assessments and interventions. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - mental disorders KW - cigarette smoking KW - hazardous drinking KW - service members KW - 2014 KW - Alcohol Abuse KW - Mental Disorders KW - Tobacco Smoking KW - Military Personnel KW - 2014 DO - 10.1097/ADM.0000000000000050 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-34232-007&site=ehost-live&scope=site UR - cynthia.leardmann@med.navy.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2014-23141-020 AN - 2014-23141-020 AU - Billock, Vincent A. AU - Tsou, Brian H. T1 - Bridging the divide between sensory integration and binding theory: Using a binding-like neural synchronization mechanism to model sensory enhancements during multisensory interactions. JF - Journal of Cognitive Neuroscience JO - Journal of Cognitive Neuroscience JA - J Cogn Neurosci Y1 - 2014/07// VL - 26 IS - 7 SP - 1587 EP - 1599 CY - US PB - MIT Press SN - 0898-929X SN - 1530-8898 AD - Billock, Vincent A., College of Optometry, Ohio State University, 338 W. 10th Ave., Columbus, OH, US, 43210 N1 - Accession Number: 2014-23141-020. Partial author list: First Author & Affiliation: Billock, Vincent A.; Ohio State University, Columbus, OH, US. Release Date: 20141110. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Neurons; Sensory Integration; Cognitive Neuroscience. Minor Descriptor: Models; Snakes; Theories. Classification: Neuropsychology & Neurology (2520). Population: Animal (20). Methodology: Empirical Study; Mathematical Model; Quantitative Study; Scientific Simulation. Page Count: 13. Issue Publication Date: Jul, 2014. Copyright Statement: Massachusetts Institute of Technology. 2014. AB - Neural information combination problems are ubiquitous in cognitive neuroscience. Two important disciplines, although conceptually similar, take radically different approaches to these problems. Sensory binding theory is largely grounded in synchronization of neurons responding to different aspects of a stimulus, resulting in a coherent percept. Sensory integration focuses more on the influences of the senses on each other and is largely grounded in the study of neurons that respond to more than one sense. It would be desirable to bridge these disciplines, so that insights gleaned from either could be harnessed by the other. To link these two fields, we used a binding-like oscillatory synchronization mechanism to simulate neurons in rattlesnake that are driven by one sense but modulated by another. Mutual excitatory coupling produces synchronized trains of action potentials with enhanced firing rates. The same neural synchronization mechanism models the behavior of a population of cells in cat visual cortex that are modulated by auditory activation. The coupling strength of the synchronizing neurons is crucial to the outcome; a criterion of strong coupling (kept weak enough to avoid seriously distorting action potential amplitude) results in intensity-dependent sensory enhancement—the principle of inverse effectiveness—a key property of sensory integration. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - sensory integration KW - binding theory KW - neural synchronization KW - model sensory enhancements KW - multisensory interactions KW - neurons KW - rattlesnake KW - 2014 KW - Neurons KW - Sensory Integration KW - Cognitive Neuroscience KW - Models KW - Snakes KW - Theories KW - 2014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-23141-020&site=ehost-live&scope=site UR - billock.3@osu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Walteros, Jose L. AU - Vogiatzis, Chrysafis AU - Pasiliao, Eduardo L. AU - Pardalos, Panos M. T1 - Integer programming models for the multidimensional assignment problem with star costs. JO - European Journal of Operational Research JF - European Journal of Operational Research Y1 - 2014/06/16/ VL - 235 IS - 3 M3 - Article SP - 553 EP - 568 SN - 03772217 AB - Highlights: [•] We introduce a continuous nonlinear program for solving the multidimensional star assignment problem (MSAP). [•] We transform the initial formulation into a mixed integer linear optimization program. [•] We propose valid inequalities to improve the lower bound of the proposed formulation. [•] We reformulate the MSAP as a set partitioning problem, and solve it via branch and price. [•] We test our approach by solving several MSAP instances of different sizes. [ABSTRACT FROM AUTHOR] AB - Copyright of European Journal of Operational Research is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTEGER programming KW - PROBLEM solving KW - MATHEMATICAL optimization KW - TRANSFORMATIONS (Mathematics) KW - MIXED integer linear programming KW - SET theory KW - Branch and price KW - Combinatorial optimization KW - Graph partitioning KW - Multi-sensor multi-target tracking problem KW - Multidimensional assignment problem KW - Star covering N1 - Accession Number: 94569105; Walteros, Jose L. 1; Email Address: jwalteros@ufl.edu; Vogiatzis, Chrysafis 1; Email Address: chvogiat@ufl.edu; Pasiliao, Eduardo L. 2; Email Address: pasiliao@eglin.af.mil; Pardalos, Panos M. 1; Email Address: pardalos@ufl.edu; Affiliations: 1: Center for Applied Optimization (CAO), Department of Industrial and Systems Engineering, University of Florida, 303 Weil Hall, P.O. Box 116595, Gainesville, FL 32611-6595, USA; 2: AFRL Munitions Directorate, Air Force Research Laboratory, Building 13, Eglin AFB, FL 32542, USA; Issue Info: Jun2014, Vol. 235 Issue 3, p553; Thesaurus Term: INTEGER programming; Thesaurus Term: PROBLEM solving; Thesaurus Term: MATHEMATICAL optimization; Subject Term: TRANSFORMATIONS (Mathematics); Subject Term: MIXED integer linear programming; Subject Term: SET theory; Author-Supplied Keyword: Branch and price; Author-Supplied Keyword: Combinatorial optimization; Author-Supplied Keyword: Graph partitioning; Author-Supplied Keyword: Multi-sensor multi-target tracking problem; Author-Supplied Keyword: Multidimensional assignment problem; Author-Supplied Keyword: Star covering; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.ejor.2013.10.048 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=94569105&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Janeczko, Allen K. AU - Walters, Edward B. AU - Schuldt, Steven J. AU - Magnuson, Matthew L. AU - Willison, Stuart A. AU - Brown, Lisa M. AU - Ruiz, Oscar N. AU - Felker, Daniel L. AU - Racz, LeeAnn T1 - Fate of malathion and a phosphonic acid in activated sludge with varying solids retention times. JO - Water Research JF - Water Research Y1 - 2014/06/15/ VL - 57 M3 - Article SP - 127 EP - 139 SN - 00431354 AB - Abstract: This study examined the ability of activated sludge (AS) to sorb and biodegrade ethylmethylphosphonic acid (EMPA) and malathion, a degradation product and surrogate, respectively, for an organophosphate chemical warfare agent. Sorption equilibrium isotherm experiments indicate that sorption of EMPA and malathion to AS is negligible. EMPA at a concentration of 1 mg L−1 degraded by approximately 30% with apparent first-order kinetics, possibly via co-metabolism from nitrification. Heterotrophic bacteria and abiotic mechanisms, however, are largely responsible for malathion degradation also with apparent first-order kinetics. EMPA did not inhibit chemical oxygen demand (COD) oxidation or nitrification activity, although malathion did appear to induce a stress response resulting in inhibition of COD oxidation. The study also included a 30-day experiment in which malathion, at a concentration of 5 mg L−1, was repeatedly fed to AS in bench-scale sequencing batch reactors (SBRs) operating at different solids retention times (SRTs). Peak malathion concentrations occurred at day 4.5, with the longer SRTs yielding greater peak malathion concentrations. The AS reduced the malathion concentrations to nearly zero by day 10 for all SRTs, even when the malathion concentration in the influent increased to 20.8 mg L−1. The data suggest a biodegradation pathway for malathion involving an oxygenase. Phylogenetic analyses revealed that all samples had an abundance of Zoogloea, though there was greater bacterial diversity in the SBR with the SRT of 50 days. The SBR with an SRT of 9.5 days had an apparent reduction in the diversity of the bacterial community. [Copyright &y& Elsevier] AB - Copyright of Water Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Phosphonic acids KW - Activated sludge process (Sewage purification) KW - BIODEGRADATION KW - Chemical oxygen demand KW - Malathion KW - RF values (Chromatography) KW - Sewage sludge KW - Activated sludge KW - Ethylmethylphosphonic acid KW - Organophosphate KW - Solids retention time N1 - Accession Number: 96186601; Janeczko, Allen K. 1; Email Address: allen.janeczko.1@us.af.mil; Walters, Edward B. 1; Email Address: edward.walters@us.af.mil; Schuldt, Steven J. 1; Email Address: steven.schuldt@us.af.mil; Magnuson, Matthew L. 2; Email Address: magnuson.matthew@epa.gov; Willison, Stuart A. 2; Email Address: willison.stuart@epa.gov; Brown, Lisa M. 3; Email Address: lisa.brown@udri.udayton.edu; Ruiz, Oscar N. 4; Email Address: oscar.ruiz@us.af.mil; Felker, Daniel L. 1; Email Address: daniel.felker@us.af.mil; Racz, LeeAnn 1; Email Address: leeann.racz@us.af.mil; Affiliations: 1: Air Force Institute of Technology, Department of Systems Engineering and Management, 2950 Hobson Way, Wright-Patterson AFB, OH 45433, USA; 2: US Environmental Protection Agency, National Homeland Security Research Center, 26 W. Martin Luther King Drive, Mailstop NG-16, Cincinnati, OH 45268, USA; 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA; 4: Air Force Research Laboratory, Aerospace Systems Directorate, Fuels and Energy Branch, Wright-Patterson AFB, OH 45433, USA; Issue Info: Jun2014, Vol. 57, p127; Thesaurus Term: Phosphonic acids; Thesaurus Term: Activated sludge process (Sewage purification); Thesaurus Term: BIODEGRADATION; Thesaurus Term: Chemical oxygen demand; Subject Term: Malathion; Subject Term: RF values (Chromatography); Subject Term: Sewage sludge; Author-Supplied Keyword: Activated sludge; Author-Supplied Keyword: Ethylmethylphosphonic acid; Author-Supplied Keyword: Organophosphate; Author-Supplied Keyword: Solids retention time; NAICS/Industry Codes: 325320 Pesticide and Other Agricultural Chemical Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.watres.2014.03.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=96186601&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Watkins, Tracey T1 - The Essence of Portfolio Analysis: A MAJCOM Perspective. JO - Air Force Comptroller JF - Air Force Comptroller J1 - Air Force Comptroller PY - 2014///Summer2014 Y1 - 2014///Summer2014 VL - 47 IS - 2 M3 - Opinion SP - 7 EP - 10 PB - United States Department of Defense SN - 00022365 AB - The article presents the author's views on about portfolio analysis and what it means to us in the U.S. Air Force financial management (FM) community. Portfolio analysis is stated to be the macro level of Every Dollar Counts (EDC). The author states that the evolution of the career field started when they began focusing more on the decision support they provide. KW - UNITED States. Air Force KW - INVESTMENT analysis KW - FINANCIAL management KW - CAREER development KW - UNITED States N1 - Accession Number: 98667897; Source Information: Summer2014, Vol. 47 Issue 2, p7; Subject Term: UNITED States. Air Force; Subject Term: INVESTMENT analysis; Subject Term: FINANCIAL management; Subject Term: CAREER development; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 4p; ; Document Type: Opinion; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=98667897&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - REIN, CHRISTOPHER T1 - "Our First Duty Was to God and Our Next to Our Country". JO - Great Plains Quarterly JF - Great Plains Quarterly Y1 - 2014///Summer2014 VL - 34 IS - 3 M3 - Article SP - 217 EP - 238 SN - 02757664 AB - The article focuses on the conflict between Native Americans and white Coloradans known as the Sand Creek Massacre, which took place in 1864. The author explores the religious aspects of the Massacre, particularly Methodism and the idea of manifest destiny, examines how the U.S. Civil War influenced the violence, and discusses the role of Colorado territorial governor John Evans. KW - SAND Creek Massacre, Colo., 1864 KW - MASSACRES -- Colorado KW - NATIVE Americans -- Colorado KW - VIOLENCE -- Religious aspects -- History KW - METHODISM -- History KW - MANIFEST destiny (U.S.) KW - COLORADO -- History -- Civil War, 1861-1865 KW - American Indians KW - Colorado KW - manifest destiny KW - Methodism KW - religion KW - US Army KW - EVANS, John, 1814-1897 N1 - Accession Number: 97295618; REIN, CHRISTOPHER 1; Affiliations: 1 : Associate professor of history, US Air Force Academy in Colorado Springs, Colorado; Source Info: Summer2014, Vol. 34 Issue 3, p217; Historical Period: 1864; Subject Term: SAND Creek Massacre, Colo., 1864; Subject Term: MASSACRES -- Colorado; Subject Term: NATIVE Americans -- Colorado; Subject Term: VIOLENCE -- Religious aspects -- History; Subject Term: METHODISM -- History; Subject Term: MANIFEST destiny (U.S.); Subject Term: COLORADO -- History -- Civil War, 1861-1865; Author-Supplied Keyword: American Indians; Author-Supplied Keyword: Colorado; Author-Supplied Keyword: manifest destiny; Author-Supplied Keyword: Methodism; Author-Supplied Keyword: religion; Author-Supplied Keyword: US Army; Number of Pages: 22p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ahl&AN=97295618&site=ehost-live&scope=site DP - EBSCOhost DB - ahl ER - TY - JOUR AU - Wu, Yeqing AU - Kumar, Sunil AU - Hu, Fei AU - Zhu, Yingying AU - Matyjas, John D. T1 - Cross-Layer Forward Error Correction Scheme Using Raptor and RCPC Codes for Prioritized Video Transmission Over Wireless Channels. JO - IEEE Transactions on Circuits & Systems for Video Technology JF - IEEE Transactions on Circuits & Systems for Video Technology Y1 - 2014/06// VL - 24 IS - 6 M3 - Article SP - 1047 EP - 1060 SN - 10518215 AB - The unequal error protection (UEP) has shown promising results for transmitting video over error-prone wireless channels. In this paper, we investigate the cross-layer design of forward error correction (FEC) schemes by using the UEP Raptor codes at the application layer (AL) and UEP rate compatible punctured convolutional (RCPC) codes at physical layer (PHY) for prioritized video packets. The video packets are prioritized based on their contribution to the received video quality. A genetic algorithm (GA)-based optimization algorithm is proposed to find the optimal parameters for both Raptor and RCPC codes, to minimize the video distortion and maximize the peak signal-to-noise-ratio for the given video bit rates and channel constraints (i.e., SNR and available bandwidth). We evaluate the performance of four combinations of the UEP schemes for H.264/AVC encoded video sequences over the AWGN and Rayleigh fading channels and show the superiority of the optimized cross-layer UEP FEC scheme. For Rayleigh fading channel, the proposed cross-layer optimization uses two different time-scales at AL and PHY which allows PHY to adapt faster to the changing channel quality. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Circuits & Systems for Video Technology is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIRELESS communication systems KW - ERROR correction (Information theory) KW - VIDEO coding (Computer science) KW - GENETIC algorithms KW - DATA packets & packeting KW - RADIO transmitters & transmission -- Fading KW - Bandwidth KW - Decoding KW - Encoding KW - Forward error correction KW - Optimization KW - PSNR KW - Streaming media N1 - Accession Number: 96381436; Wu, Yeqing 1; Kumar, Sunil 2; Hu, Fei 1; Zhu, Yingying 3; Matyjas, John D. 4; Affiliations: 1: Electrical and Computer Engineering Department, University of Alabama, Tuscaloosa, AL, USA; 2: Electrical and Computer Engineering Department, San Diego State University, San Diego, CA, USA; 3: Electrical and Computer Engineering Department, University of California, Riverside, CA, USA; 4: , Air Force Research Laboratory, Rome, NY, USA; Issue Info: Jun2014, Vol. 24 Issue 6, p1047; Thesaurus Term: WIRELESS communication systems; Subject Term: ERROR correction (Information theory); Subject Term: VIDEO coding (Computer science); Subject Term: GENETIC algorithms; Subject Term: DATA packets & packeting; Subject Term: RADIO transmitters & transmission -- Fading; Author-Supplied Keyword: Bandwidth; Author-Supplied Keyword: Decoding; Author-Supplied Keyword: Encoding; Author-Supplied Keyword: Forward error correction; Author-Supplied Keyword: Optimization; Author-Supplied Keyword: PSNR; Author-Supplied Keyword: Streaming media; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TCSVT.2014.2302151 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=96381436&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Banerjee, Tania AU - Sahni, Sartaj AU - Seetharaman, Gunasekaran T1 - PC-DUOS+: A TCAM Architecture for Packet Classifiers. JO - IEEE Transactions on Computers JF - IEEE Transactions on Computers Y1 - 2014/06// VL - 63 IS - 6 M3 - Article SP - 1527 EP - 1540 SN - 00189340 AB - We propose algorithms for distributing the classifier rules to two ternary content addressable memories (TCAMs) and for incrementally updating the TCAMs. The performance of our scheme is compared against the prevalent scheme of storing classifier rules in a single TCAM in priority order. Our scheme results in an improvement in average lookup speed by up to 49% and an improvement in update performance by up to 3.84 times in terms of the number of TCAM writes. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Computers is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER architecture KW - COMPUTER algorithms KW - RANDOM access memory KW - COMPUTER network protocols KW - DATA packets & packeting KW - SCHEME (Computer program language) KW - Computer architecture KW - Encoding KW - Indexes KW - Packet classifiers KW - Protocols KW - Random access memory KW - ternary content addressable memories (TCAMs) KW - Throughput KW - updates N1 - Accession Number: 96647913; Banerjee, Tania 1; Sahni, Sartaj 1; Seetharaman, Gunasekaran 2; Affiliations: 1: Department of Computer and Information Science and Engineering, University of Florida, Gainesville,; 2: Air Force Research Laboratory (AFRL), Rome,; Issue Info: Jun2014, Vol. 63 Issue 6, p1527; Thesaurus Term: COMPUTER architecture; Thesaurus Term: COMPUTER algorithms; Thesaurus Term: RANDOM access memory; Thesaurus Term: COMPUTER network protocols; Subject Term: DATA packets & packeting; Subject Term: SCHEME (Computer program language); Author-Supplied Keyword: Computer architecture; Author-Supplied Keyword: Encoding; Author-Supplied Keyword: Indexes; Author-Supplied Keyword: Packet classifiers; Author-Supplied Keyword: Protocols; Author-Supplied Keyword: Random access memory; Author-Supplied Keyword: ternary content addressable memories (TCAMs); Author-Supplied Keyword: Throughput; Author-Supplied Keyword: updates; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TC.2012.287 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=96647913&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Greenwood, Andrew D. AU - Lehr, F. Mark AU - Nanni, Emilio A. T1 - Guest Editorial The Fifteenth Special Issue on High-Power Microwave Generation. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2014/06//Jun2014 Part 1 Y1 - 2014/06//Jun2014 Part 1 VL - 42 IS - 6 M3 - Article SP - 1481 EP - 1481 SN - 00933813 AB - The publication this year of the Fifteenth Special Issue on High-Power Microwave Generation continues a tradition in the field dating back to 1985. While the editors are concerned with the somewhat sparse selection of papers in this issue, the diversity of authorship both geographically and across research institutions is gratifying. The body of work represented by this volume emphasizes a clear continuation, in fact acceleration, of the use computational tools, which has represented a consistent trend in recent issues. Most notable are Particle in Cell (PIC) codes, which have enabled the optimization and virtual prototyping of a variety of High Power Microwave (HPM) sources. The overwhelming success of modern computational tools has all but eliminated the need for empirical iteration in the hardware realization of a given source design. Instead, any iteration proceeds during a virtual, numerical design process, and the final design is the only one built, saving both time and money. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVE generation KW - VIRTUAL prototypes KW - ELECTROMAGNETISM N1 - Accession Number: 96423334; Source Information: Jun2014 Part 1, Vol. 42 Issue 6, p1481; Subject Term: MICROWAVE generation; Subject Term: VIRTUAL prototypes; Subject Term: ELECTROMAGNETISM; Subject Term: ; Number of Pages: 1p; ; Document Type: Article; L3 - 10.1109/TPS.2014.2323679 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=96423334&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Galvagno, Samuel M. AU - Dubose, Joseph J. AU - Grissom, Thomas E. AU - Fang, Raymond AU - Smith, Richard AU - Bebarta, Vikhyat S. AU - Shackelford, Stacy AU - Scalea, Thomas M. T1 - The Epidemiology of Critical Care Air Transport Team Operations in Contemporary Warfare. JO - Military Medicine JF - Military Medicine Y1 - 2014/06// VL - 179 IS - 6 M3 - Article SP - 612 EP - 618 PB - AMSUS SN - 00264075 AB - Critical Care Air Transport Teams (CCATTs) have evolved as a vital component of the U.S. Air Force's aeromedical evacuation system. Previous epidemiological research in this area is limited. The objective of this commentary is to highlight the importance of obtaining robust epidemiological data regarding patients transported by CCATTs. A limited epidemiological analysis was performed to describe CCATT patients transported during Operation Enduring Freedom and the waning months of Operation Iraqi Freedom. CCATT transports for the calendar year 2011 were examined as recorded in the U.S. Transportation Command Regulating and Command and Control (C2) Evacuation System database. As many as 290 CCATT primary patient transport records were reviewed. Of these, 58.6% of patients had multiple injuries, 15.9% of patients had traumatic brain injury, 7% had acute coronary syndromes, and 24.8% of all transports were for nonbattle-related injuries. The most common International Classification of Disease, 9th Edition. Clinical Modification coded injury was bilateral lower extremity amputation (40%). Explosive blasts were the top mechanism of injury for patients requiring CCAT. The distribution of injuries and illnesses requiring CCAT appear to have changed compared to previous conventional conflicts. Understanding the epidemiology of casualties evacuated by CCATT during modern warfare is a prerequisite for the development of effective predeployment training to ensure optimal outcomes for critically ill and injured warriors. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRITICAL care medicine -- Research KW - MILITARY medicine -- Research KW - EPIDEMIOLOGY -- Research KW - MILITARY personnel -- Wounds & injuries -- Research KW - WAR casualties -- Research N1 - Accession Number: 96442609; Galvagno, Samuel M. 1,2; Dubose, Joseph J. 3,4; Grissom, Thomas E. 1,2; Fang, Raymond 3,4; Smith, Richard 5; Bebarta, Vikhyat S. 6; Shackelford, Stacy 3,4; Scalea, Thomas M. 3; Source Information: Jun2014, Vol. 179 Issue 6, p612; Subject: CRITICAL care medicine -- Research; Subject: MILITARY medicine -- Research; Subject: EPIDEMIOLOGY -- Research; Subject: MILITARY personnel -- Wounds & injuries -- Research; Subject: WAR casualties -- Research; Number of Pages: 7p; Illustrations: 3 Charts, 2 Graphs; Document Type: Article L3 - 10.7205/MILMED-D-13-00474 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=96442609&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Nowadly, Craig D. AU - David, Jason W. AU - M. Grogger, Melanie L. AU - Demkowicz, Erik R. AU - Atchley, Daniel H. AU - Veverka, Donald V. T1 - Characterization of the Effects of Heat Stress on the DNA-Intercalating Dye EvaGreen for Potential Use With the Joint Biological Agent Identification and Diagnostic System. JO - Military Medicine JF - Military Medicine Y1 - 2014/06// VL - 179 IS - 6 M3 - Article SP - 626 EP - 632 PB - AMSUS SN - 00264075 AB - Although advances in real-time polymerase chain reaction (PCR) technology and equipment have facilitated field research, only a limited selection of reagents do not require cold storage. This study explored the temperature stability of the commercially available DNA-intercalating dye EvaGreen after exposure to a spectrum of temperatures for 176 days by analyzing quantification cycle (Cq) and end fluorescence levels during amplification of the invA gene of Salmonella typhimurium. To further characterize potential dye stability, the effects of small differences in dye volume were examined and dye samples were subjected to an Air Force deployment to the Middle East. Significant differences in Cq and end fluorescence were found; however, the magnitude of mean Cq differences was less than one cycle and the magnitude of mean fluorescence differences was less than that attributable to a difference of 0.25 μL of dye per 25 μL reaction. Liquid EvaGreen dye may thus be stable at temperatures as high as 65 °C for up to 6 months for use in real-time PCR. These results warrant further investigation by using liquid EvaGreen dye to adapt traditional lab-based real-time PCR assays for Joint Biological Agent Identification and Diagnostic System use and testing the assays in the field. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERASE chain reaction -- Research KW - SALMONELLA typhimurium -- Research KW - MILITARY medicine -- Research KW - MEDICAL technology -- Research KW - BIOLOGICAL assay -- Research N1 - Accession Number: 96442615; Nowadly, Craig D. 1; David, Jason W. 1; M. Grogger, Melanie L. 1; Demkowicz, Erik R. 1; Atchley, Daniel H. 2; Veverka, Donald V. 1; Source Information: Jun2014, Vol. 179 Issue 6, p626; Subject: POLYMERASE chain reaction -- Research; Subject: SALMONELLA typhimurium -- Research; Subject: MILITARY medicine -- Research; Subject: MEDICAL technology -- Research; Subject: BIOLOGICAL assay -- Research; Number of Pages: 7p; Illustrations: 2 Charts, 4 Graphs; Document Type: Article L3 - 10.7205/MILMED-D-13-00515 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=96442615&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR T1 - Working With Coaches Who Want to Drastically Change the Training Plan You Have Designed for Their Athletes. AU - Greener, Trent AU - Petersen, Drew AU - Pinske, Kim JO - Strength & Conditioning Journal (Lippincott Williams & Wilkins) JF - Strength & Conditioning Journal (Lippincott Williams & Wilkins) Y1 - 2014/06// VL - 36 IS - 3 SP - 97 EP - 99 SN - 15241602 N1 - Accession Number: 96516942; Author: Greener, Trent: 1 Author: Petersen, Drew: 2 Author: Pinske, Kim: 3 ; Author Affiliation: 1 Athletic Department, University of Wyoming, Laramie, WY: 2 Athletic Department, Humboldt State University, Arcata, CA: 3 Athletic Department, United States Air Force Academy, Colorado Springs, CO; No. of Pages: 3; Language: English; Publication Type: Article; Update Code: 20140614 N2 - The article discusses how to strength and conditioning coaches can effectively work with head sports coaches who alter training programs that have been designed by them. Topics include the need for the sports coach to determine why changes should be made, the importance of basing the new program on solid research, and practical advice on dealing with the situation from Coaches Trent Greener and Drew Petersen. KW - *PHYSICAL training & conditioning KW - *COACHES (Athletics) KW - *ATHLETICS UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=96516942&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 2014-21523-001 AN - 2014-21523-001 AU - Houpt, Joseph W. AU - Blaha, Leslie M. AU - McIntire, John P. AU - Havig, Paul R. AU - Townsend, James T. T1 - Systems factorial technology with R. JF - Behavior Research Methods JO - Behavior Research Methods JA - Behav Res Methods Y1 - 2014/06// VL - 46 IS - 2 SP - 307 EP - 330 CY - Germany PB - Springer SN - 1554-351X SN - 1554-3528 AD - Houpt, Joseph W., Department of Psychology, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH, US, 45435 N1 - Accession Number: 2014-21523-001. PMID: 24019062 Other Journal Title: Behavior Research Methods & Instrumentation; Behavior Research Methods, Instruments & Computers. Partial author list: First Author & Affiliation: Houpt, Joseph W.; Department of Psychology, Wright State University, Dayton, OH, US. Other Publishers: Psychonomic Society. Release Date: 20140616. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Processes; Statistics; Technology; Computational Modeling. Minor Descriptor: Mathematical Psychology. Classification: Statistics & Mathematics (2240). Population: Human (10). Tests & Measures: Visual Detection Task; Dot Task; Global–Local Object Discrimination Task; Cognitive Decision-Making Task. References Available: Y. Page Count: 24. Issue Publication Date: Jun, 2014. Publication History: First Posted Date: Sep 10, 2013. Copyright Statement: Psychonomic Society, Inc. 2013. AB - Systems factorial technology (SFT) comprises a set of powerful nonparametric models and measures, together with a theory-driven experiment methodology termed the double factorial paradigm (DFP), for assessing the cognitive information-processing mechanisms supporting the processing of multiple sources of information in a given task (Townsend and Nozawa, Journal of Mathematical Psychology 39:321–360, 1995). We provide an overview of the model-based measures of SFT, together with a tutorial on designing a DFP experiment to take advantage of all SFT measures in a single experiment. Illustrative examples are given to highlight the breadth of applicability of these techniques across psychology. We further introduce and demonstrate a new package for performing SFT analyses using R for statistical computing. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - systems factorial technology KW - nonparametric models & measures KW - double factorial paradigm KW - cognitive information-processing mechanisms KW - R package KW - statistical computing KW - mathematical psychology KW - 2014 KW - Cognitive Processes KW - Statistics KW - Technology KW - Computational Modeling KW - Mathematical Psychology KW - 2014 DO - 10.3758/s13428-013-0377-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-21523-001&site=ehost-live&scope=site UR - joseph.houpt@wright.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-44904-001 AN - 2013-44904-001 AU - Friedrich, Tamara L. AU - Vessey, William B. AU - Schuelke, Matthew J. AU - Mumford, Michael D. AU - Yammarino, Francis J. AU - Ruark, Gregory A. T1 - Collectivistic leadership and George C. Marshall: A historiometric analysis of career events. JF - The Leadership Quarterly JO - The Leadership Quarterly JA - Leadersh Q Y1 - 2014/06// VL - 25 IS - 3 SP - 449 EP - 467 CY - Netherlands PB - Elsevier Science SN - 1048-9843 AD - Friedrich, Tamara L., Warwick Business School, University of Warwick, Coventry, United Kingdom, CV4 7AL N1 - Accession Number: 2013-44904-001. Partial author list: First Author & Affiliation: Friedrich, Tamara L.; University of Warwick, Coventry, United Kingdom. Release Date: 20131223. Correction Date: 20140616. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Group Dynamics; Leadership; Military Personnel; Teams. Minor Descriptor: Military Psychology. Classification: Organizational Behavior (3660); Military Psychology (3800). Population: Human (10); Male (30). Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Problem Solving Task; Leadership Scale; Performance Scale; Historiometric Content Coding Scale; Leadership Behavior Scale; Leader Member Exchange Score. Methodology: Empirical Study; Nonclinical Case Study; Quantitative Study. References Available: Y. Page Count: 19. Issue Publication Date: Jun, 2014. Publication History: Accepted Date: Oct 29, 2013; Revised Date: Oct 28, 2013; First Submitted Date: Apr 6, 2011. Copyright Statement: All rights reserved. Elsevier Inc. 2013. AB - Many of the prevailing approaches to understanding leadership assume that leadership operates as an individual-level phenomenon, in which one person takes on the role of a leader. However, a number of recently developed leadership models now describe leadership as a shared process. These collectivistic theories present leadership as a dynamic process in which a leader may selectively utilize the skills of followers and distribute elements of the leadership role among these followers as the situation demands. In this study, we conduct an investigation into the viability of core elements of the collectivistic theories through a historiometric analysis of events from the career of a notable leader, George C. Marshall. One hundred and two events from Marshall's career were identified from historical biographies and were then content coded and analyzed with regard to the components of a collectivistic leadership model. The results of this historiometric analysis indicated that there are key antecedents to collectivistic leadership and that the use of this form of leadership can result in positive team outcomes. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - military leadership KW - military personnel KW - career events KW - historical biographies KW - collective leadership KW - historiometric methods KW - team leadership KW - network leadership KW - 2014 KW - Group Dynamics KW - Leadership KW - Military Personnel KW - Teams KW - Military Psychology KW - 2014 U1 - Sponsor: US Army Research Institute, US. Grant: W91WAW-09-C-0090. Recipients: No recipient indicated DO - 10.1016/j.leaqua.2013.10.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-44904-001&site=ehost-live&scope=site UR - tamara.friedrich@wbs.ac.uk DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2014-20188-012 AN - 2014-20188-012 AU - Parasuraman, Raja AU - Kidwell, Brian AU - Olmstead, Ryan AU - Lin, Ming-Kuan AU - Jankord, Ryan AU - Greenwood, Pamela T1 - Interactive effects of the COMT gene and training on individual differences in supervisory control of unmanned vehicles. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2014/06// VL - 56 IS - 4 SP - 760 EP - 771 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Parasuraman, Raja, Center of Excellence in Neuroergonomics, Technology, and Cognition (CENTEC), George Mason University, MS 3F5, 4400 University Drive, Fairfax, VA, US, 22030 N1 - Accession Number: 2014-20188-012. PMID: 25029900 Partial author list: First Author & Affiliation: Parasuraman, Raja; George Mason University, Fairfax, VA, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20140526. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Parasuraman, Raja. Major Descriptor: Genes; Individual Differences. Minor Descriptor: Motor Vehicles; Training. Classification: Human Factors Engineering (4010). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: Jun, 2014. Publication History: Accepted Date: Oct 3, 2013; First Submitted Date: May 22, 2013. Copyright Statement: Human Factors and Ergonomics Society. 2013. AB - Objective: We examined whether a gene known to influence dopamine availability in the prefrontal cortex is associated with individual differences in learning a supervisory control task. Background: Methods are needed for selection and training of human operators who can effectively supervise multiple unmanned vehicles (UVs). Compared to the valine (Val) allele, the methionine (Met) allele of the COMT gene has been linked to superior executive function, but it is not known whether it is associated with training-related effects in multi-UV supervisory control performance. Method: Ninety-nine healthy adults were genotyped for the COMT Val158Met single nucleotide polymorphism (rs4680) and divided into Met/Met, Val/Met, and Val/Val groups. Participants supervised six UVs in an air defense mission requiring them to attack incoming enemy aircraft and protect a no-fly zone from intruders in conditions of low and high task load (numbers of enemy aircraft). Training effects were examined across four blocks of trials in each task load condition. Results: Compared to the Val/Met and Val/Val groups, Met/Met individuals exhibited a greater increase in enemy targets destroyed and greater reduction in enemy red zone incursions across training blocks. Conclusion: Individuals with the COMT Met/Met genotype can acquire skill in executive function tasks, such as multi-UV supervisory control, to a higher level and/or faster than other genotype groups. Application: Potential applications of this research include the development of individualized training methods for operators of multi-UV systems and selecting personnel for complex supervisory control tasks. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - COMT gene KW - individual differences KW - supervisory control of unmanned vehicles KW - training KW - 2014 KW - Genes KW - Individual Differences KW - Motor Vehicles KW - Training KW - 2014 U1 - Sponsor: AFOSR/AFRL. Grant: FA9550-10-1-0385. Recipients: Parasuraman, Raja U1 - Sponsor: Center of Excellence in Neuroergonomics, Technology, and Cognition. Recipients: No recipient indicated DO - 10.1177/0018720813510736 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-20188-012&site=ehost-live&scope=site UR - rparasur@gmu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2014-22371-005 AN - 2014-22371-005 AU - Matthews, Gerald AU - Warm, Joel S. AU - Shaw, Tyler H. AU - Finomore, Victor S. T1 - Predicting battlefield vigilance: A multivariate approach to assessment of attentional resources. JF - Ergonomics JO - Ergonomics JA - Ergonomics Y1 - 2014/06// VL - 57 IS - 6 SP - 856 EP - 875 CY - United Kingdom PB - Taylor & Francis SN - 0014-0139 SN - 1366-5847 AD - Matthews, Gerald N1 - Accession Number: 2014-22371-005. PMID: 24678837 Partial author list: First Author & Affiliation: Matthews, Gerald; Institute of Simulation and Training, University of Central Florida, Orlando, FL, US. Release Date: 20140616. Correction Date: 20160616. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Sustained Attention; Test Construction; Vigilance. Minor Descriptor: Cognitive Ability; Innovation; Stress. Classification: Tests & Testing (2220); Human Factors Engineering (4010). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Educational Testing Service (ETS) Kit of Factor-Referenced Cognitive Tests; O-LIFE Schizotypy Scale; Coping in Task Situations Questionnaire; Short Vigilance Task; Cognitive Failures Questionnaire DOI: 10.1037/t00791-000; I-7 Impulsiveness Questionnaire DOI: 10.1037/t04851-000; Dundee Stress State Questionnaire DOI: 10.1037/t27031-000; Sensation Seeking Scale; Pittsburgh Sleep Quality Index DOI: 10.1037/t05178-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 20. Issue Publication Date: Jun, 2014. Publication History: Accepted Date: Feb 21, 2014; First Submitted Date: Sep 2, 2013. Copyright Statement: Taylor & Francis. 2014. AB - Technological innovation increasingly requires operators in various applied settings to maintain vigilance for extended periods. However, standard psychometric tests typically predict less than 10% of performance variance. The present study (N = 462) aimed to apply the resource theory of sustained attention to construct a multivariate test battery for predicting battlefield vigilance. The battery included cognitive ability tests, a high-workload short vigilance task and subjective measures of stress response. Four versions of a 60- min simulated military battlefield monitoring task were constructed to represent different operational requirements. The test battery predicted 24–44% of criterion variance, depending on task version, suggesting that it may identify vigilant operators in military and other applied contexts. A multiple-groups path analysis showed that relationships between ability and vigilance were moderated by working memory demands. Findings are consistent with a diffuse theoretical concept of ‘resources’ in which performance energisation depends on multiple, loosely coupled processes. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - attentional resources KW - cognitive ability KW - fatigue KW - military performance KW - stress KW - vigilance KW - test construction KW - 2014 KW - Sustained Attention KW - Test Construction KW - Vigilance KW - Cognitive Ability KW - Innovation KW - Stress KW - 2014 DO - 10.1080/00140139.2014.899630 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-22371-005&site=ehost-live&scope=site UR - gmatthews@ist.ucf.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Huang, H Sam AU - Ganguli, Sabyasachi AU - Roy, Ajit K T1 - Prediction of the transverse thermal conductivity of pitch-based carbon fibers. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2014/05/15/ VL - 48 IS - 11 M3 - Article SP - 1383 EP - 1390 SN - 00219983 AB - In this paper, we utilized a bottom-up method to predict the transverse thermal conductivity of pitched-based carbon fibers. We used molecular dynamics simulations with Green-Kubo formalism to calculate the in-plane thermal conductivity and out-of-plane thermal conductivity of the graphite sheets. The effects of waviness on the thermal conductivity of the graphite sheets were studied by MD simulations. The calculated in-plane thermal conductivity and out-of-plane thermal conductivity of graphite sheets from MD simulations were then used for the prediction of transverse thermal conductivity of the pitch fibers by finite element method. In the finite element simulations, the waviness in the graphite sheets was found to decrease the transverse thermal conductivity of pitch fibers, though not significantly. The defects observed in the pitch fibers were simulated by the damage elements in the finite element analysis. The simulation results showed that the proposed model, in which 12.5% of damage was included, predicted the effective transverse thermal conductivity well compared to the value measured from experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL conductivity KW - THERMAL conductivity measurement KW - CARBON fibers KW - MOLECULAR dynamics KW - SIMULATION methods & models KW - FINITE element method KW - finite element KW - molecular dynamics simulations KW - Pitch fiber KW - thermal conductivity N1 - Accession Number: 95970228; Huang, H Sam 1; Ganguli, Sabyasachi 2; Roy, Ajit K 3; Source Information: May2014, Vol. 48 Issue 11, p1383; Subject: THERMAL conductivity; Subject: THERMAL conductivity measurement; Subject: CARBON fibers; Subject: MOLECULAR dynamics; Subject: SIMULATION methods & models; Subject: FINITE element method; Author-Supplied Keyword: finite element; Author-Supplied Keyword: molecular dynamics simulations; Author-Supplied Keyword: Pitch fiber; Author-Supplied Keyword: thermal conductivity; Number of Pages: 8p; Document Type: Article; Full Text Word Count: 3700 L3 - 10.1177/0021998313486501 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=95970228&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Darnell III, Walter J. T1 - The Royal Air Force in Texas: Training British Pilots in Terrell during World War II. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2014/05//May/Jun2014 Y1 - 2014/05//May/Jun2014 VL - 28 IS - 2 M3 - Book Review SP - 189 EP - 192 PB - Superintendent of Documents SN - 1555385X KW - ROYAL Air Force in Texas: Training British Pilots in Terrell During World War II, The (Book) KW - KILLEBREW, Tom KW - GREAT Britain. Royal Air Force KW - NONFICTION N1 - Accession Number: 95895994; Source Information: May/Jun2014, Vol. 28 Issue 2, p189; Subject Term: ROYAL Air Force in Texas: Training British Pilots in Terrell During World War II, The (Book); Subject Term: KILLEBREW, Tom; Subject Term: GREAT Britain. Royal Air Force; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 4p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=95895994&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Vogiatzis, Chrysafis AU - Pasiliao, Eduardo AU - Pardalos, Panos T1 - Graph partitions for the multidimensional assignment problem. JO - Computational Optimization & Applications JF - Computational Optimization & Applications Y1 - 2014/05// VL - 58 IS - 1 M3 - Article SP - 205 EP - 224 SN - 09266003 AB - In this paper, we consider two decomposition schemes for the graph theoretical description of the axial Multidimensional Assignment Problem (MAP). The problem is defined as finding n disjoint cliques of size m with minimum total cost in K, which is an m-partite graph with n elements per dimension. Even though the 2-dimensional assignment problem is solvable in polynomial time, extending the problem to include n≥3 dimensions renders it $\mathcal{NP}$-hard. We propose two novel decomposition schemes for partitioning a MAP into disjoint subproblems, that can then be recombined to provide both upper and lower bounds to the original problem. For each of the partitioning schemes, we investigate and compare the efficiency of distinct exact and heuristic methodologies, namely augmentation and partitioning. Computational results for the methods, along with a hybrid one that consists of both partitioning schemes, are presented to depict the success of our approaches on large-scale instances. [ABSTRACT FROM AUTHOR] AB - Copyright of Computational Optimization & Applications is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPH theory KW - PARTITIONS (Mathematics) KW - ASSIGNMENT problems (Programming) KW - DECOMPOSITION (Mathematics) KW - SCHEMES (Algebraic geometry) KW - PARALLEL computers KW - Graph decomposition KW - Multi-sensor multi-target tracking problem KW - Multidimensional assignment problem KW - Parallel computing N1 - Accession Number: 95487387; Vogiatzis, Chrysafis 1; Email Address: chvogiat@ufl.edu; Pasiliao, Eduardo 2; Email Address: pasiliao@eglin.af.mil; Pardalos, Panos 1; Email Address: pardalos@ufl.edu; Affiliations: 1: Department of Industrial and Systems Engineering, University of Florida, Gainesville USA; 2: Munitions Directorate, Air Force Research Laboratory, Eglin AFB 32542 USA; Issue Info: May2014, Vol. 58 Issue 1, p205; Subject Term: GRAPH theory; Subject Term: PARTITIONS (Mathematics); Subject Term: ASSIGNMENT problems (Programming); Subject Term: DECOMPOSITION (Mathematics); Subject Term: SCHEMES (Algebraic geometry); Subject Term: PARALLEL computers; Author-Supplied Keyword: Graph decomposition; Author-Supplied Keyword: Multi-sensor multi-target tracking problem; Author-Supplied Keyword: Multidimensional assignment problem; Author-Supplied Keyword: Parallel computing; Number of Pages: 20p; Document Type: Article L3 - 10.1007/s10589-013-9619-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=95487387&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Park, Joon S. AU - Kwiat, Kevin A. AU - Kamhoua, Charles A. AU - White, Jonathan AU - Kim, Sookyung T1 - Trusted Online Social Network (OSN) services with optimal data management. JO - Computers & Security JF - Computers & Security Y1 - 2014/05// VL - 42 M3 - Article SP - 116 EP - 136 SN - 01674048 AB - Abstract: Online Social Network (OSN) services have rapidly grown into a wide network and offer users a variety of benefits. However, they also bring new threats and privacy issues to the community. Unfortunately, there are attackers that attempt to expose OSN users' private information or conceal the information that the user desire to share with other users. Therefore, in this research we develop a framework that can provide trusted data management in OSN services. We first define the data types in OSN services and the states of shared data with respect to Optimal, Under-shared, Over-shared, and Hybrid states. We also identify the facilitating, detracting, and preventive parameters that are responsible for the state transition of the data. In a reliable OSN service, we address that a user should be able to set up his or her desired level of information sharing with a certain group of other users. However, it is not always clear to the ordinary users how to determine how much information they should reveal to others. In order to support such a decision, we propose an approach for helping OSN users to determine their optimum levels of information sharing, taking into consideration the payoffs (potential Reward or Cost) based on the Markov decision process (MDP). As an extension of the MDP-based approach, we also introduce a game theoretic approach, considering the interactions of OSN users and attackers with conflicting interests whose decisions affect each other's. Finally, after developing the framework for the optimal data sharing on OSNs, we conduct several experiments with attack simulation based on the proposed ideas and discuss the results. Our proposed approach has the capability to allow a large amount of variables to be altered to suit particular setups that an organization might have. [Copyright &y& Elsevier] AB - Copyright of Computers & Security is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTIMAL control theory KW - DATA analysis KW - COMPUTER security KW - INFORMATION theory KW - ONLINE social networks KW - COMPUTER users KW - Online social networks KW - OSNs KW - Privacy protection KW - Security KW - Trusted data management N1 - Accession Number: 95216234; Park, Joon S. 1; Email Address: jspark@syr.edu; Kwiat, Kevin A. 2; Email Address: kevin.kwiat@us.af.mil; Kamhoua, Charles A. 2; Email Address: charles.kamhoua.1@us.af.mil; White, Jonathan 3; Email Address: white@harding.edu; Kim, Sookyung 1; Email Address: sk52@syr.edu; Affiliations: 1: School of Information Studies, Syracuse University, Syracuse, NY, USA; 2: Information Directorate, US Air Force Research Laboratory (AFRL), Rome, NY, USA; 3: Department of Engineering and Physics, Harding University, Searcy, AR, USA; Issue Info: May2014, Vol. 42, p116; Thesaurus Term: OPTIMAL control theory; Thesaurus Term: DATA analysis; Thesaurus Term: COMPUTER security; Thesaurus Term: INFORMATION theory; Subject Term: ONLINE social networks; Subject Term: COMPUTER users; Author-Supplied Keyword: Online social networks; Author-Supplied Keyword: OSNs; Author-Supplied Keyword: Privacy protection; Author-Supplied Keyword: Security; Author-Supplied Keyword: Trusted data management; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; Number of Pages: 21p; Document Type: Article L3 - 10.1016/j.cose.2014.02.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=95216234&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - MARTINEZ-MEDINA, LUISA A. T1 - Meeting and Exceeding Our Personal Expectations. JO - Contract Management JF - Contract Management Y1 - 2014/05// VL - 54 IS - 5 M3 - Article SP - 10 EP - 10 SN - 01903063 AB - The article discusses the ethical aspects of contract management. The importance of the fifth standard in the Contract Management Code of Ethics established by the National Contract Management Association (NCMA) is emphasized. The significance of professional training in the acquisition of knowledge, skills and competence is highlighted. KW - CONTRACTS KW - MANAGEMENT KW - PROFESSIONAL ethics KW - PROFESSIONAL employees KW - CODES of ethics KW - TRAINING of KW - NATIONAL Contract Management Association (Organization) N1 - Accession Number: 95752788; MARTINEZ-MEDINA, LUISA A. 1; Affiliations: 1: contract specialist, U.S. Air Force Research Laboratory; Issue Info: May2014, Vol. 54 Issue 5, p10; Thesaurus Term: CONTRACTS; Thesaurus Term: MANAGEMENT; Thesaurus Term: PROFESSIONAL ethics; Thesaurus Term: PROFESSIONAL employees; Subject Term: CODES of ethics; Subject Term: TRAINING of ; Company/Entity: NATIONAL Contract Management Association (Organization) DUNS Number: 072662562; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=95752788&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Elabd, S. AU - Balasubramanian, S. AU - Wu, Q. AU - Quach, T. AU - Mattamana, A. AU - Khalil, W. T1 - Analytical and Experimental Study of Wide Tuning Range mm-Wave CMOS LC-VCOs. JO - IEEE Transactions on Circuits & Systems. Part I: Regular Papers JF - IEEE Transactions on Circuits & Systems. Part I: Regular Papers J1 - IEEE Transactions on Circuits & Systems. Part I: Regular Papers PY - 2014/05// Y1 - 2014/05// VL - 61 IS - 5 M3 - Article SP - 1343 EP - 1354 SN - 15498328 AB - The unprecedented interest in high bandwidth applications in the mm-wave range has set off a wave of research exploring techniques that enable wide tuning range voltage-controlled oscillators (VCOs). Low frequency CMOS LC-VCOs (< 10 GHz) have been well studied in the literature and several approaches have been developed to optimize their performance. However, there lie several interesting challenges in the mm-wave space, specifically close to the f_T/f\max, that motivate the need for analyzing the tuning range and phase noise in mm-wave VCOs. This paper presents a detailed analysis of the ultimate performance bound in simultaneously achieving low phase noise and wide tuning range in CMOS VCOs. The analysis is conducted on a 130 nm CMOS process, and confirmed by measurement results on three VCOs at 26 GHz, 34 GHz and 40 GHz. Finally, the impact of CMOS technology scaling (from 130 nm down to 45 nm), on the achievable performance bounds is analyzed and presented. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Circuits & Systems. Part I: Regular Papers is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPLEMENTARY metal oxide semiconductors KW - VOLTAGE-controlled oscillators KW - TUNING (Electronics) KW - WAVE analysis KW - PERFORMANCE evaluation KW - ELECTRIC oscillators N1 - Accession Number: 98013668; Source Information: May2014, Vol. 61 Issue 5, p1343; Subject Term: COMPLEMENTARY metal oxide semiconductors; Subject Term: VOLTAGE-controlled oscillators; Subject Term: TUNING (Electronics); Subject Term: WAVE analysis; Subject Term: PERFORMANCE evaluation; Subject Term: ELECTRIC oscillators; Subject Term: ; Number of Pages: 12p; ; Document Type: Article; L3 - 10.1109/TCSI.2014.2309862 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=98013668&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Gao, Yuan AU - Zardareh, Saba Zare AU - Yang, Xi AU - Nan, Tian Xiang AU - Zhou, Zi Yao AU - Onabajo, Marvin AU - Liu, Ming AU - Aronow, Andrew AU - Mahalingam, Krishnamurthy AU - Howe, Brandon M. AU - Brown, Gail J. AU - Sun, Nian X. T1 - Significantly Enhanced Inductance and Quality Factor of GHz Integrated Magnetic Solenoid Inductors With FeGaB/ Al2O3 Multilayer Films. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices J1 - IEEE Transactions on Electron Devices PY - 2014/05// Y1 - 2014/05// VL - 61 IS - 5 M3 - Article SP - 1470 EP - 1476 SN - 00189383 AB - We report new high quality factor (Q) integrated GHz magnetic inductors based on solenoid structures with FeGaB/ Al2O3 multilayer films, which show significantly enhanced inductance and quality factor at GHz frequencies over their air core counterparts. These inductors show an excellent high-frequency performance with a wide operation frequency range 0.5–2.5 GHz, in which the inductance is flat and the peak quality factor can reach \sim20 . The inductance of the magnetic inductor shows >100\% enhancement compared with that of the same size air core inductor. These novel GHz inductors with high inductance and Q enhancement show great promise for applications in radio frequency integrated circuits. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC induction KW - ELECTRIC inductance KW - QUALITY factor KW - SOLENOIDS KW - IRON compounds KW - ALUMINUM oxide KW - MULTILAYERS KW - MAGNETIC anisotropy N1 - Accession Number: 95697115; Source Information: May2014, Vol. 61 Issue 5, p1470; Subject Term: MAGNETIC induction; Subject Term: ELECTRIC inductance; Subject Term: QUALITY factor; Subject Term: SOLENOIDS; Subject Term: IRON compounds; Subject Term: ALUMINUM oxide; Subject Term: MULTILAYERS; Subject Term: MAGNETIC anisotropy; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TED.2014.2313095 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=95697115&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Chen, P. C. AU - Ritz, Erich AU - Lindsley, Ned T1 - Nonlinear Flutter Analysis for the Scaled F-35 with Horizontal-Tail Free Play. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2014/05//May/Jun2014 Y1 - 2014/05//May/Jun2014 VL - 51 IS - 3 M3 - Article SP - 883 EP - 889 SN - 00218669 AB - A nonlinear tlutter analysis is performed to study the limit-cycle-oscillation characteristics of an F-35 wind-tunnel model with horizontal-tail free-play effects using a direct simulation method. The result of this study is first validated with the wind-tunnel data. Then, a set of free-play design charts is generated to investigate the limit-cycle-oscillation-occurrence domain at various free-play angles and hinge moments of the horizontal tail. It is found that, as long as the horizontal tail is unloaded, the limit-cycle oscillation is inevitable even with a very small free-play angle. Furthermore, the free-play angle cannot be the only significant parameter involved in the free-play criteria. Therefore, it is suggested that an improved military specification for free-play limits of all-movable control surfaces be established. This effort will make a substantial impact on the control-surface design that may lead to a paradigm shift in the design criteria of aircraft structure. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUTTER (Aerodynamics) -- Research KW - NONLINEAR oscillations -- Research KW - LIMIT cycles KW - F-35 (Military aircraft) KW - JET fighter planes -- Wind tunnel testing N1 - Accession Number: 96976273; Source Information: May/Jun2014, Vol. 51 Issue 3, p883; Subject Term: FLUTTER (Aerodynamics) -- Research; Subject Term: NONLINEAR oscillations -- Research; Subject Term: LIMIT cycles; Subject Term: F-35 (Military aircraft); Subject Term: JET fighter planes -- Wind tunnel testing; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.2514/1.C032501 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=96976273&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Stanford, Bret AU - Beran, Philip AU - Bhatia, Manav T1 - Aeroelastic Topology Optimization of Blade-Stiffened Panels. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2014/05//May/Jun2014 Y1 - 2014/05//May/Jun2014 VL - 51 IS - 3 M3 - Article SP - 938 EP - 944 SN - 00218669 AB - Metallic blade-stiffened panels are optimized for various eigenvalue metrics of interest to the aerospace community. This is done via solid isotropic material with penalization-based topology optimization: the stiffeners are discretized into finite elements, and each element is assigned a design variable, which may vary from 0 (void) to 1 (solid). A known issue with eigenvalue-based optimization is discontinuities due to mode switching, which may be avoided through a series of eigenvalue separation constraints, or (more challenging, but less restrictive) a bound method with mode tracking. Both methods are demonstrated to obtain optimal stiffener topologies for panel buckling, but only the former is used for aeroelastic panel-flutter problems. Satisfactory flutter optimal results are obtained, but the work concludes with a discussion of the challenges associated with the use of a bound method for aeroelastic problems, with specific complications posed by the advent of hump modes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY -- Research KW - EIGENVALUES KW - BUCKLING (Mechanics) -- Research KW - FLUTTER (Aerodynamics) -- Research KW - ISOTROPIC properties N1 - Accession Number: 96976278; Source Information: May/Jun2014, Vol. 51 Issue 3, p938; Subject Term: AEROELASTICITY -- Research; Subject Term: EIGENVALUES; Subject Term: BUCKLING (Mechanics) -- Research; Subject Term: FLUTTER (Aerodynamics) -- Research; Subject Term: ISOTROPIC properties; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.2514/1.C032500 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=96976278&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Eilerman, Patricia A. AU - Herzog, Catherine M. AU - Luce, Beverly K. AU - Chao, Susan Y. AU - Walker, Sandra M. AU - Zarzabal, Lee A. AU - Carnahan, David H. T1 - A Comparison of Obesity Prevalence: Military Health System and United States Populations, 2009-2012. JO - Military Medicine JF - Military Medicine Y1 - 2014/05// VL - 179 IS - 5 M3 - Article SP - 462 EP - 470 PB - AMSUS SN - 00264075 AB - Overweight and obesity prevalence has increased over the past 30 years. Few studies have looked at the enrolled Military Health System (MHS) population (2.2 million per year). This descriptive study examined trends in overweight and obesity in both children and adults from fiscal years 2009 to 2012 and compared them to the U.S. population. Prevalence in MHS children decreased over time for overweight (14.2–13.8%) and obesity (11.7–10.9%). Active duty adults showed an increase in overweight prevalence (52.7–53.4%) and a decrease in obesity prevalence (18.9–18.3%). For nonactive duty, both overweight and obesity prevalence remained relatively unchanged around 33%. For both children and adults, overweight and obesity prevalence increased with age, except for obesity in the nonactive duty ≥65 subgroup. When compared to the United States by gender and age, MHS children generally had a lower overweight and obesity prevalence, active duty adults had higher overweight and lower obesity prevalence, and nonactive duty adults had comparable overweight and obesity prevalence, except for obesity in both men in the 40 to 59 subgroup and women in ≥60 subgroup. More research on the MHS population is needed to identify risk factors and modifiable health behaviors that could defeat the disease of obesity. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OBESITY in children -- Research KW - OVERWEIGHT children -- Research KW - OVERWEIGHT persons -- Research KW - OBESITY -- Risk factors -- Research KW - DISEASE prevalence -- Research KW - DISEASES -- Causes & theories of causation -- Research N1 - Accession Number: 96010786; Eilerman, Patricia A. 1; Herzog, Catherine M. 1; Luce, Beverly K. 1; Chao, Susan Y. 1; Walker, Sandra M. 1; Zarzabal, Lee A. 1,2; Carnahan, David H. 1; Source Information: May2014, Vol. 179 Issue 5, p462; Subject: OBESITY in children -- Research; Subject: OVERWEIGHT children -- Research; Subject: OVERWEIGHT persons -- Research; Subject: OBESITY -- Risk factors -- Research; Subject: DISEASE prevalence -- Research; Subject: DISEASES -- Causes & theories of causation -- Research; Number of Pages: 9p; Illustrations: 5 Charts, 2 Graphs; Document Type: Article L3 - 10.7205/MILMED-D-13-00430 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=96010786&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Kontur, Frederick J.1, Frederick.Kontur@usafa.edu AU - Terry, Nathan B.1 T1 - Motivating Students to Do Homework. JO - Physics Teacher JF - Physics Teacher J1 - Physics Teacher PY - 2014/05// Y1 - 2014/05// VL - 52 IS - 5 CP - 5 M3 - Article SP - 295 EP - 297 SN - 0031921X AB - The article discusses several aspects of motivating student for their homework. It states that some instructors make students' homework scores a significant percentage of the final course grade whereas some instructors just rely on students' intrinsic motivation to learn the course material. Information on motivation from course credit, homework quizzes and intrinsic sources is also offered. KW - Motivation in education KW - Homework KW - College teachers KW - Intrinsic motivation KW - Educational tests & measurements N1 - Accession Number: 95848589; Authors:Kontur, Frederick J. 1 Email Address: Frederick.Kontur@usafa.edu; Terry, Nathan B. 1; Affiliations: 1: United States Air Force Academy, USAF Academy, CO; Subject: Motivation in education; Subject: Homework; Subject: College teachers; Subject: Intrinsic motivation; Subject: Educational tests & measurements; Number of Pages: 3p; Record Type: Article L3 - 10.1119/1.4872413 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=95848589&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR ID - 2014-38600-005 AN - 2014-38600-005 AU - Trippe, D. Matthew AU - Moriarty, Karen O. AU - Russell, Teresa L. AU - Carretta, Thomas R. AU - Beatty, Adam S. T1 - Development of a cyber/information technology knowledge test for military enlisted technical training qualification. T3 - Selected New Developments in Military Enlistment Testing JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2014/05// VL - 26 IS - 3 SP - 182 EP - 198 CY - US PB - Educational Publishing Foundation SN - 0899-5605 SN - 1532-7876 SN - 1-4338-1903-1 AD - Trippe, D. Matthew, 0503 Timberwood Circle, Suite 101, Louisville, KY, US, 40223 N1 - Accession Number: 2014-38600-005. Partial author list: First Author & Affiliation: Trippe, D. Matthew; Human Resources Research Organization, Alexandria, VA, US. Other Publishers: Lawrence Erlbaum; Taylor & Francis. Release Date: 20140922. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. ISBN: 1-4338-1903-1. Language: English. Major Descriptor: Armed Services Vocational Aptitude Battery; Military Personnel; Personnel Selection; Test Construction. Minor Descriptor: Cognitive Psychology; Information Technology; Military Enlistment; Personnel Placement; Test Reliability; Test Validity. Classification: Occupational & Employment Testing (2228); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Armed Forces Qualification Test; Armed Services Vocational Aptitude Battery DOI: 10.1037/t11801-000. References Available: Y. Page Count: 17. Issue Publication Date: May, 2014. Copyright Statement: American Psychological Association. 2014. AB - An Armed Services Vocational Aptitude Battery (ASVAB) Review Panel, with expertise in personnel selection, job classification, psychometrics, and cognitive psychology developed recommendations for changes to the military enlistment test battery. One recommendation was to develop and evaluate a test of cyber/information and communications technology literacy to supplement current ASVAB content. This article summarizes a multiphased Cyber Test development process: (a) a review of information/computer technology literacy definitions and measures, (b) development and pilot testing of a cyber knowledge measure, (c) validation of test scores against final school grades (FSGs) for selected technical training courses, (d) development of an operational reporting metric and subgroup norms, and (e) examination of construct validity. Results indicate the Cyber Test has predictive validity versus technical training school grades and incremental validity comparable to the ASVAB technical knowledge tests when used with the ASVAB Armed Forces Qualification Test (AFQT) verbal/math composite as a baseline. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cyber KW - information and communications technology KW - technical knowledge KW - selection and classification KW - Armed Services Vocational Aptitude Battery KW - test development KW - reliability KW - validity KW - 2014 KW - Armed Services Vocational Aptitude Battery KW - Military Personnel KW - Personnel Selection KW - Test Construction KW - Cognitive Psychology KW - Information Technology KW - Military Enlistment KW - Personnel Placement KW - Test Reliability KW - Test Validity KW - 2014 DO - 10.1037/mil0000042 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-38600-005&site=ehost-live&scope=site UR - mtrippe@humrro.org DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2014-38600-006 AN - 2014-38600-006 AU - Held, Janet D. AU - Carretta, Thomas R. AU - Rumsey, Michael G. T1 - Evaluation of tests of perceptual speed/accuracy and spatial ability for use in military occupational classification. T3 - Selected New Developments in Military Enlistment Testing JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2014/05// VL - 26 IS - 3 SP - 199 EP - 220 CY - US PB - Educational Publishing Foundation SN - 0899-5605 SN - 1532-7876 SN - 1-4338-1903-1 AD - Held, Janet D., Navy Personnel Research, Studies, and Technology, Bureau of Naval Personnel, 5720 Integrity Drive, Millington, TN, US, 38055-1000 N1 - Accession Number: 2014-38600-006. Partial author list: First Author & Affiliation: Held, Janet D.; Navy Personnel Research, Studies, and Technology, Bureau of Naval Personnel, Millington, TN, US. Other Publishers: Lawrence Erlbaum; Taylor & Francis. Release Date: 20140922. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. ISBN: 1-4338-1903-1. Language: English. Major Descriptor: Aptitude Measures; Armed Services Vocational Aptitude Battery; Military Personnel; Spatial Ability; Test Validity. Minor Descriptor: Personnel Placement; Personnel Selection. Classification: Occupational & Employment Testing (2228); Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Armed Forces Qualification Test; Armed Services Vocational Aptitude Battery DOI: 10.1037/t11801-000. References Available: Y. Page Count: 22. Issue Publication Date: May, 2014. Copyright Statement: American Psychological Association. 2014. AB - With the exception of Assembling Objects (AO), a spatial ability test used only by the Navy in enlisted occupational classification, the Armed Services Vocational Aptitude Battery (ASVAB) is academic and knowledge-based, somewhat limiting its utility for occupational classification. This article presents the case for integrating the AO test into military classification composites and for expanding the breadth of ASVAB content by including a former ASVAB speed/accuracy test, Coding Speed (CS). Empirical evidence is presented that shows AO and CS (a) increment the validity of the ASVAB in predicting training grades for a broad array of occupations, (b) reduce adverse impact defined as test score barriers for women and minorities, and (c) improve classification in terms of matching recruits to occupations. Some cognitive theory is presented to support AO and CS, as well as nonverbal reasoning and working memory tests for inclusion in or adjuncts to the ASVAB. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - ASVAB KW - incremental validity KW - adverse impact KW - classification effectiveness KW - coding speed KW - assembling objects KW - 2014 KW - Aptitude Measures KW - Armed Services Vocational Aptitude Battery KW - Military Personnel KW - Spatial Ability KW - Test Validity KW - Personnel Placement KW - Personnel Selection KW - 2014 DO - 10.1037/mil0000043 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-38600-006&site=ehost-live&scope=site UR - janet.held@navy.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-37927-001 AN - 2013-37927-001 AU - Mezulis, Amy AU - Salk, Rachel H. AU - Hyde, Janet Shibley AU - Priess-Groben, Heather A. AU - Simonson, Jordan L. T1 - Affective, biological, and cognitive predictors of depressive symptom trajectories in adolescence. JF - Journal of Abnormal Child Psychology JO - Journal of Abnormal Child Psychology JA - J Abnorm Child Psychol Y1 - 2014/05// VL - 42 IS - 4 SP - 539 EP - 550 CY - Germany PB - Springer SN - 0091-0627 SN - 1573-2835 AD - Mezulis, Amy N1 - Accession Number: 2013-37927-001. PMID: 24158642 Partial author list: First Author & Affiliation: Mezulis, Amy; Department of Clinical Psychology, Seattle Pacific University, Seattle, WA, US. Release Date: 20131104. Correction Date: 20140602. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Salk, Rachel H. Major Descriptor: Biology; Cognitive Style; Disease Course; Emotional States; Major Depression. Minor Descriptor: Puberty; Risk Factors; Symptoms. Classification: Affective Disorders (3211). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Childhood (birth-12 yrs) (100); School Age (6-12 yrs) (180); Adolescence (13-17 yrs) (200); Adulthood (18 yrs & older) (300). Tests & Measures: Ruminative Response Scale; Response Style Questionnaire; Children’s Cognitive Style Questionnaire; Children's Depression Inventory; Kiddie Schedule for Affective Disorders and Schizophrenia; Infant Behavior Questionnaire DOI: 10.1037/t07209-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: May, 2014. Publication History: First Posted Date: Oct 26, 2013. Copyright Statement: Springer Science+Business Media New York. 2013. AB - Heterogeneity in the longitudinal course of depressive symptoms was examined using latent growth mixture modeling among a community sample of 382 U.S. youth from ages 11 to 18 (52.1 % female). Three latent trajectory classes were identified: Stable Low (51 %; displayed low depressive symptoms at all assessments), Increasing (37 %; reported low depressive symptoms at age 11, but then significantly higher depressive symptoms than the Stable Low class at ages 13, 15, and 18), and Early High (12 %; reported high early depressive symptoms at age 11, followed by symptoms that declined over time yet remained significantly higher than those of the Stable Low class at ages 13, 15, and 18). By age 15, rates of Major Depressive Disorder diagnoses among the Early High (25.0 %) and Increasing (20.4 %) classes were more than twice that observed among the Stable Low class (8.8 %). Affective (negative affectivity), biological (pubertal timing, sex) and cognitive (cognitive style, rumination) factors were examined as predictors of class membership. Results indicated general risk factors for both high-risk trajectories as well as specific risk factors unique to each trajectory. Being female and high infant negative affectivity predicted membership in the Increasing class. Early puberty, high infant negative affectivity for boys, and high rumination for girls predicted membership in the Early High class. Results highlight the importance of examining heterogeneity in depression trajectories in adolescence as well as simultaneously considering risk factors across multiple domains. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - depressive symptoms KW - negative affectivity KW - cognitive style KW - biology KW - risk factors KW - puberty KW - symptom trajectories KW - 2014 KW - Biology KW - Cognitive Style KW - Disease Course KW - Emotional States KW - Major Depression KW - Puberty KW - Risk Factors KW - Symptoms KW - 2014 U1 - Sponsor: National Science Foundation. Grant: DGE- 071823. Other Details: Graduate Research Fellowship. Recipients: Salk, Rachel H. U1 - Sponsor: National Institute of Mental Health. Grant: F31MH084476. Recipients: Priess-Groben, Heather A. U1 - Sponsor: National Institute of Mental Health. Grant: R01MH44340. Recipients: Hyde, Janet Shibley U1 - Sponsor: University of Wisconsin. Other Details: Graduate School Grant. Recipients: Hyde, Janet Shibley DO - 10.1007/s10802-013-9812-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-37927-001&site=ehost-live&scope=site UR - jordan.simonson.1@us.af.mil UR - heather.groben@simpson.edu UR - jshyde@wisc.edu UR - rsalk@wisc.edu UR - mezulis@spu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Grabowski, Chris AU - Degnan, James H. AU - Amdahl, David J. AU - Domonkos, Matthew AU - Ruden, Edward L. AU - White, William AU - Wurden, Glen A. AU - Frese, Michael H. AU - Frese, Sherry D. AU - Camacho, Frank AU - Coffey, Sean K. AU - Kiuttu, Gerald F. AU - Kostora, Mark AU - McCullough, John AU - Sommars, Wayne AU - Lynn, Alan G. AU - Yates, Kevin AU - Bauer, Bruno S. AU - Fuelling, Stephan AU - Siemon, Richard E. T1 - Addressing Short Trapped-Flux Lifetime in High-Density Field-Reversed Configuration Plasmas in FRCHX. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2014/04/15/Apr2014 Part 2 Y1 - 2014/04/15/Apr2014 Part 2 VL - 42 IS - 5 M3 - Article SP - 1179 EP - 1188 SN - 00933813 AB - The objective of the field-reversed configuration heating experiment (FRCHX) is to obtain a better understanding of the fundamental scientific issues associated with high-energy density laboratory plasmas (HEDLPs) in strong, closed-field-line magnetic fields. These issues have relevance to such topics as magneto-inertial fusion, laboratory astrophysical research, and intense radiation sources, among others. To create HEDLP conditions, a field-reversed configuration (FRC) plasma of moderate density is first formed via reversed-field theta pinch. It is then translated into a cylindrical aluminum flux conserver (solid liner), where it is trapped between two magnetic mirrors and then compressed by the magnetically driven implosion of the solid liner. A requirement is that, once the FRC is stopped within the solid liner, the trapped flux inside the FRC must persist while the compression process is completed. With the present liner dimensions and implosion drive bank parameters, the total time required for implosion is \sim25~\mus . Lifetime measurements of recent FRCHX FRCs indicate that trapped lifetimes following capture are now approaching \sim14~\mus (and therefore, total lifetimes after formation are now approaching \sim19~\mus ). By separating the mirror and translation coil banks into two so that the mirror fields can be set lower initially, the liner compression can now be initiated 7–9 \mus before the FRC is formed. A discussion of FRC lifetime-limiting mechanisms and various experimental approaches to extending the FRC lifetime will be presented. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIELD-reversed configuration -- Research KW - HIGH-density plasmas -- Research KW - INERTIAL confinement fusion -- Research KW - MAGNETIC confinement -- Research KW - PLASMA production -- Research KW - PLASMA (Ionized gases) -- Research KW - MAGNETIC mirrors -- Research N1 - Accession Number: 95969831; Source Information: Apr2014 Part 2, Vol. 42 Issue 5, p1179; Subject Term: FIELD-reversed configuration -- Research; Subject Term: HIGH-density plasmas -- Research; Subject Term: INERTIAL confinement fusion -- Research; Subject Term: MAGNETIC confinement -- Research; Subject Term: PLASMA production -- Research; Subject Term: PLASMA (Ionized gases) -- Research; Subject Term: MAGNETIC mirrors -- Research; Subject Term: ; Number of Pages: 10p; ; Document Type: Article; L3 - 10.1109/TPS.2014.2305402 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=95969831&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 103870622 T1 - Caring as Emancipatory Nursing Praxis. AU - Ray, Marilyn A. AU - Turkel, Marian C. Y1 - 2014/04//Apr-Jun2014 N1 - Accession Number: 103870622. Language: English. Entry Date: 20150107. Revision Date: 20150710. Publication Type: Journal Article; review. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. NLM UID: 7809992. KW - Caring KW - Nursing Practice KW - Social Justice KW - Human Rights KW - Nursing Theory KW - Social Responsibility KW - Leadership KW - Health Care Delivery KW - Research, Nursing KW - Education, Nursing KW - Ethics, Nursing KW - Health Care Costs KW - Nursing Administration SP - 132 EP - 146 JO - Advances in Nursing Science JF - Advances in Nursing Science JA - ANS VL - 37 IS - 2 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - In the culture of health care, nurses are challenged to understand their values and beliefs as humanistic within complex technical and economically driven bureaucratic systems. This article outlines the language of social justice and human rights and the advance of a Theory of Relational Caring Complexity, which offers insights into caring as emancipatory nursing praxis. Recommendations provide knowledge of the struggle to balance economics, technology, and caring. As nurses practice from a value-driven, philosophical, and ethical social justice framework, they will find “their voice” and realize the full potential that the power of caring has on patient and organizational outcomes. SN - 0161-9268 AD - United States Air Force Nurse Corps; The Christine E. Lynn College of Nursing, Florida Atlantic University, Boca Raton, Florida AD - Professional Nursing Practice, Albert Einstein Healthcare Network, Philadelphia, Pennsylvania U2 - PMID: 24786202. DO - 10.1097/ANS.0000000000000024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=103870622&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Veksler, Vladislav D. AU - Myers, Christopher W. AU - Gluck, Kevin A. T1 - SA wS u: An Integrated Model of Associative and Reinforcement Learning. JO - Cognitive Science JF - Cognitive Science Y1 - 2014/04// VL - 38 IS - 3 M3 - Article SP - 580 EP - 598 SN - 03640213 AB - Successfully explaining and replicating the complexity and generality of human and animal learning will require the integration of a variety of learning mechanisms. Here, we introduce a computational model which integrates associative learning (AL) and reinforcement learning (RL). We contrast the integrated model with standalone AL and RL models in three simulation studies. First, a synthetic grid-navigation task is employed to highlight performance advantages for the integrated model in an environment where the reward structure is both diverse and dynamic. The second and third simulations contrast the performances of the three models in behavioral experiments, demonstrating advantages for the integrated model in accounting for behavioral data. [ABSTRACT FROM AUTHOR] AB - Copyright of Cognitive Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REINFORCEMENT learning KW - LEARNING ability KW - ASSOCIATIVE learning KW - PAIRED associate learning KW - LEARNING KW - Associative learning KW - Cognitive modeling KW - Cognitive system KW - Decision making KW - Integrated models KW - Learning KW - Reinforcement learning N1 - Accession Number: 95616509; Veksler, Vladislav D. 1; Myers, Christopher W. 1; Gluck, Kevin A. 1; Affiliations: 1: Air Force Research Laboratory; Issue Info: Apr2014, Vol. 38 Issue 3, p580; Subject Term: REINFORCEMENT learning; Subject Term: LEARNING ability; Subject Term: ASSOCIATIVE learning; Subject Term: PAIRED associate learning; Subject Term: LEARNING; Author-Supplied Keyword: Associative learning; Author-Supplied Keyword: Cognitive modeling; Author-Supplied Keyword: Cognitive system; Author-Supplied Keyword: Decision making; Author-Supplied Keyword: Integrated models; Author-Supplied Keyword: Learning; Author-Supplied Keyword: Reinforcement learning; Number of Pages: 19p; Document Type: Article L3 - 10.1111/cogs.12103 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=95616509&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Vu, Tran Manh AU - Won, Sang Hee AU - Ombrello, Timothy AU - Cha, Min Suk T1 - Stability enhancement of ozone-assisted laminar premixed Bunsen flames in nitrogen co-flow. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2014/04// VL - 161 IS - 4 M3 - Article SP - 917 EP - 926 SN - 00102180 AB - Abstract: Ozone (O3) is known as one of the strongest oxidizers and therefore is widely used in many applications. Typically in the combustion field, a combination of non-thermal plasma and combustion systems have been studied focusing on the effects of ozone on flame propagation speeds and ignition characteristics. Here, we experimentally investigated the effects of ozone on blowoff of premixed methane/air and propane/air flames over a full range of equivalence ratios at room temperature and atmospheric pressure by using a co-flow burner and a dielectric barrier discharge. The results with ozone showed that a nozzle exit jet velocity at the moment of flame blowoff (blowoff velocity) significantly increased, and flammability limits for both fuel-lean and rich mixtures were also extended. Ozone had stronger effects of percent enhancement in the blowoff velocity for off-stoichiometric mixtures, while minimum enhancements could be observed around stoichiometric conditions for both fuels showing linear positive dependence on a tested range of ozone concentration up to 3810ppm. Through chemical kinetic simulations, the experimentally observed trends of the enhancement in blowoff velocity were identified as a result of the modification of the laminar burning velocity. Two ozone decomposition pathways of O3 +N2 →O+O2 +N2 and O3 +H→O2 +OH were identified as the most controlling steps. These reactions, coupled with fuel consumption characteristics of each fuel determined the degree of promotion in laminar burning velocities, supporting experimental observations on blowoff velocities with ozone addition. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Ozone KW - Nitrogen KW - Laminar flow KW - Bunsen burner KW - Chemical stability KW - Gas flow KW - Thermal plasmas KW - Blowoff velocity KW - Dielectric barrier discharge KW - Plasma assisted combustion N1 - Accession Number: 94569740; Vu, Tran Manh 1; Won, Sang Hee 2; Ombrello, Timothy 3; Cha, Min Suk 1; Email Address: min.cha@kaust.edu.sa; Affiliations: 1: Clean Combustion Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia; 2: Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, United States; 3: Air Force Research Laboratory, Aerospace Systems Directorate, 1950 Fifth Street, Wright-Patterson AFB, OH 45433, United States; Issue Info: Apr2014, Vol. 161 Issue 4, p917; Thesaurus Term: Ozone; Thesaurus Term: Nitrogen; Subject Term: Laminar flow; Subject Term: Bunsen burner; Subject Term: Chemical stability; Subject Term: Gas flow; Subject Term: Thermal plasmas; Author-Supplied Keyword: Blowoff velocity; Author-Supplied Keyword: Dielectric barrier discharge; Author-Supplied Keyword: Plasma assisted combustion; NAICS/Industry Codes: 339113 Surgical Appliance and Supplies Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.combustflame.2013.09.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=94569740&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 95567126 T1 - Effects of a Vibratory Device on Pain from Anesthetic Injections. AU - DiFelice, Michael G. AU - Vandewalle, Kraig S. AU - Maller, Steven C. AU - Raymond H. Hancock Y1 - 2014/04// N1 - Accession Number: 95567126. Language: English. Entry Date: 20150923. Revision Date: 20140417. Publication Type: Article. Journal Subset: Biomedical; USA. NLM UID: 9600713. SP - 246 EP - 253 JO - Compendium of Continuing Education in Dentistry (15488578) JF - Compendium of Continuing Education in Dentistry (15488578) JA - COMPENDIUM CONT EDUC DENT VL - 35 IS - 4 CY - Newtown, Pennsylvania PB - AEGIS Communications, LLC AB - BACKGROUND: A randomized block, split-mouth design was used to determine the effectiveness of a vibratory device with topical anesthetic compared to topical anesthetic only in reducing the pain experienced during an inferior alveolar nerve block. METHODS: Twenty participants each received two inferior alveolar injections with a 5-minute interval between injections, one with topical anesthetic and one with topical anesthetic and a vibratory device. Each injection included a 2-minute application of topical anesthetic gel at the injection site. Local anesthetic was administered bilaterally using a 27-gauge needle with or without the vibratory device. Participants rated the pain they experienced after each injection by using a visual analog scale (VAS). A mean VAS score and standard deviation was determined per group. Data was analyzed with a paired t test (α = 0.05). RESULTS: The group receiving the vibratory device with topical anesthetic had a mean VAS score of 21.2 mm ±18.6 mm, and the group receiving the topical anesthetic alone had a VAS score of 38.7mm ± 23.3 mm. CONCLUSION: The use of the vibratory device and topical anesthetic significantly reduced the pain experienced during the administration of a local anesthetic injection compared with the use of topical anesthetic alone (P= 0.006). SN - 1548-8578 AD - Major, United States Air Force, DC, General Dentistry, Aviano Air Force Base, Aviano, Italy AD - Colonel, United States Air Force, DC, Director, Dental Research, Advanced Education in General Dentistry Residency Program, Dunn Dental Clinic, Joint Base, San Antonio-Lackland, Texas AD - Air Force Postgraduate Dental School, Uniformed Services University of the Health Sciences, Bethesda, Maryland UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=95567126&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Kichambare, Padmakar D. AU - Howell, Thomas AU - Rodrigues, Stanley T1 - Sol-Gel-Derived Lithium Superionic Conductor Li1.5Al0.5Ge1.5(PO4)3 Electrolyte for Solid-State Lithium-Oxygen Batteries. JO - Energy Technology JF - Energy Technology Y1 - 2014/04// VL - 2 IS - 4 M3 - Article SP - 391 EP - 396 PB - Wiley-Blackwell SN - 21944288 AB - Lithium aluminium germanium phosphate (LAGP) is attracting a great deal of attention as a solid electrolyte for lithium-oxygen (Li-O2) batteries due to its high ionic conductivity. In this study, LAGP is prepared by a sol-gel process using comparatively low-cost GeCl2 as one of the reactants. The final product (LAGP) is obtained by sintering the dry precursor gel at 900 °C for 6 h. The influence of the duration of water evaporation during polymerization on the microstructure of LAGP has been examined. The structure, morphology, and electrochemical properties of LAGP are investigated by employing X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen adsorption-desorption analysis, and electrochemical impedance spectroscopy. XRD studies confirm the formation of Li1.5Al0.5Ge1.5(PO4)3 as a primary phase along with small amounts of AlPO4 and Li2O as impurity phases. LAGP specimens have ionic conductivities in the range of 10−4 to 10−5 S cm−1 at room temperature. In addition, LAGP also exhibits electrocatalytic activity towards the oxygen-reduction and evolution reactions. These results demonstrate the potential of LAGP prepared by sol-gel processes as a solid electrolyte for lithium-ion conduction in solid-state lithium-oxygen batteries. [ABSTRACT FROM AUTHOR] AB - Copyright of Energy Technology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Lithium KW - Ceramic materials -- Synthesis KW - Sol-gel processes KW - Superionic conductors KW - Electric conductors KW - LAGP KW - lithium-oxygen batteries KW - sol-gel processing KW - solid electrolytes KW - superionic conductors N1 - Accession Number: 95626327; Kichambare, Padmakar D. 1; Howell, Thomas 1,2; Rodrigues, Stanley 1; Affiliations: 1: Aerospace Systems Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7252 (USA); 2: GE Aviation, Cincinnati, Ohio 45215 (USA); Issue Info: Apr2014, Vol. 2 Issue 4, p391; Thesaurus Term: RESEARCH; Thesaurus Term: Lithium; Subject Term: Ceramic materials -- Synthesis; Subject Term: Sol-gel processes; Subject Term: Superionic conductors; Subject Term: Electric conductors; Author-Supplied Keyword: LAGP; Author-Supplied Keyword: lithium-oxygen batteries; Author-Supplied Keyword: sol-gel processing; Author-Supplied Keyword: solid electrolytes; Author-Supplied Keyword: superionic conductors; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; Number of Pages: 6p; Document Type: Article L3 - 10.1002/ente.201300139 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=95626327&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 104059079 T1 - Comparison of Clinical Outcome of Pronation External Rotation versus Supination External Rotation Ankle Fractures. AU - Schottel, Patrick C. AU - Berkes, Marschall B. AU - Little, Milton T. M. AU - Garner, Matthew R. AU - Fabricant, Peter D. AU - Lazaro, Lionel E. AU - Helfet, David L. AU - Lorich, Dean G. Y1 - 2014/04// N1 - Accession Number: 104059079. Language: English. Entry Date: 20140407. Revision Date: 20150710. Publication Type: Journal Article; diagnostic images; research; tables/charts. Commentary: Schottel Patrick C., Lorich Dean G. Author Response. (FOOT ANKLE INT) Aug2014; 35 (8): 841-841. Journal Subset: Biomedical; Peer Reviewed; USA. Instrumentation: Foot and Ankle Outcome Score (FAOS). NLM UID: 9433869. KW - Ankle Fractures -- Surgery KW - Rotation KW - Treatment Outcomes KW - Ankle Fractures -- Classification KW - Human KW - Prospective Studies KW - Ankle -- Radiography KW - Tomography, X-Ray Computed KW - Clinical Assessment Tools KW - Range of Motion KW - Descriptive Statistics KW - Adult KW - Magnetic Resonance Imaging KW - Middle Age KW - Aged KW - Aged, 80 and Over KW - Male KW - Female KW - Adolescence KW - Chi Square Test KW - T-Tests KW - Fisher's Exact Test KW - Data Analysis Software KW - Post Hoc Analysis SP - 353 EP - 359 JO - Foot & Ankle International JF - Foot & Ankle International JA - FOOT ANKLE INT VL - 35 IS - 4 CY - Thousand Oaks, California PB - Sage Publications Inc. SN - 1071-1007 AD - Orthopaedic Trauma Service, Hospital for Special Surgery, New York, NY, USA AD - United States Air Force, Landstuhl Regional Medical Center, Landstuhl, Germany AD - Orthopaedic Trauma Service, Harborview Medical Center, Seattle, WA AD - Orthopaedic Trauma Service, Hospital for Special Surgery, New York, NY, USA, Weill Cornell Medical College, New York Presbyterian Hospital, New York, NY, USA U2 - PMID: 24459203. DO - 10.1177/1071100714520694 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104059079&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Comparison of Clinical Outcome of Pronation External Rotation versus Supination External Rotation Ankle Fractures. AU - Schottel, Patrick C. AU - Berkes, Marschall B. AU - Little, Milton T. M. AU - Garner, Matthew R. AU - Fabricant, Peter D. AU - Lazaro, Lionel E. AU - Helfet, David L. AU - Lorich, Dean G. JO - Foot & Ankle International JF - Foot & Ankle International Y1 - 2014/04// VL - 35 IS - 4 SP - 353 EP - 359 SN - 10711007 N1 - Accession Number: 95319416; Author: Schottel, Patrick C.: 1 Author: Berkes, Marschall B.: 2 Author: Little, Milton T. M.: 3 Author: Garner, Matthew R.: 1 Author: Fabricant, Peter D.: 1 Author: Lazaro, Lionel E.: 1 Author: Helfet, David L.: 4 Author: Lorich, Dean G.: 4 ; Author Affiliation: 1 Orthopaedic Trauma Service, Hospital for Special Surgery, New York, NY, USA: 2 United States Air Force, Landstuhl Regional Medical Center, Landstuhl, Germany: 3 Orthopaedic Trauma Service, Harborview Medical Center, Seattle, WA: 4 Orthopaedic Trauma Service, Hospital for Special Surgery, New York, NY, USA, Weill Cornell Medical College, New York Presbyterian Hospital, New York, NY, USA; No. of Pages: 7; Language: English; Publication Type: Article; Update Code: 20140402 N2 - The article discusses research which aims to compare the clinical outcomes of operatively treated pronation external rotation IV (PER IV) ankle fractures and with a similarly treated cohort of supination external rotation IV (SER IV) ankle fractures. The study reveals no significant difference in the rate of fracture nonunion, wound complications, or loss of reduction between the two groups. However, it shows that the PER IV cohort has a significantly higher rate of syndesmotic malreduction. KW - *ANKLE KW - *RADIOGRAPHY KW - *ANKLE -- Fractures KW - *JOINTS (Anatomy) -- Range of motion KW - *MAGNETIC resonance imaging KW - *TOMOGRAPHY KW - *TREATMENT effectiveness KW - CHI-squared test KW - FISHER exact test KW - LONGITUDINAL method KW - OUTCOME assessment (Medical care) KW - ROTATIONAL motion KW - STATISTICS KW - T-test (Statistics) KW - DATA analysis KW - DATA analysis -- Software KW - DESCRIPTIVE statistics KW - ankle fracture KW - malleolar fracture KW - patient-reported outcomes KW - prognosis KW - pronation external rotation KW - supination external rotation UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=95319416&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Abdelhakim, Mai AU - Lightfoot, Leonard E. AU - Ren, Jian AU - Li, Tongtong T1 - Distributed Detection in Mobile Access Wireless Sensor Networks under Byzantine Attacks. JO - IEEE Transactions on Parallel & Distributed Systems JF - IEEE Transactions on Parallel & Distributed Systems J1 - IEEE Transactions on Parallel & Distributed Systems PY - 2014/04// Y1 - 2014/04// VL - 25 IS - 4 M3 - Article SP - 950 EP - 959 SN - 10459219 AB - This paper explores reliable data fusion in mobile access wireless sensor networks under Byzantine attacks. We consider the q-out-of-m rule, which is popular in distributed detection and can achieve a good tradeoff between the miss detection probability and the false alarm rate. However, a major limitation with it is that the optimal scheme parameters can only be obtained through exhaustive search, making it infeasible for large networks. In this paper, first, by exploiting the linear relationship between the scheme parameters and the network size, we propose simple but effective sub-optimal linear approaches. Second, for better flexibility and scalability, we derive a near-optimal closed-form solution based on the central limit theorem. Third, subjecting to a miss detection constraint, we prove that the false alarm rate of q-out-of-m diminishes exponentially as the network size increases, even if the percentage of malicious nodes remains fixed. Finally, we propose an effective malicious node detection scheme for adaptive data fusion under time-varying attacks; the proposed scheme is analyzed using the entropy-based trust model, and shown to be optimal from the information theory point of view. Simulation examples are provided to illustrate the performance of proposed approaches under both static and dynamic attacks. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Parallel & Distributed Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIRELESS sensor networks KW - MOBILE communication systems KW - MOBILE computing KW - DATA integration (Computer science) KW - ENTROPY KW - ALGORITHMS N1 - Accession Number: 94763966; Source Information: Apr2014, Vol. 25 Issue 4, p950; Subject Term: WIRELESS sensor networks; Subject Term: MOBILE communication systems; Subject Term: MOBILE computing; Subject Term: DATA integration (Computer science); Subject Term: ENTROPY; Subject Term: ALGORITHMS; Subject Term: ; Number of Pages: 10p; ; Document Type: Article; L3 - 10.1109/TPDS.2013.74 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=94763966&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Wang, Li AU - Ren, Shangping AU - Korel, Bogdan AU - Kwiat, Kevin A. AU - Salerno, Eric T1 - Improving System Reliability Against Rational Attacks Under Given Resources. JO - IEEE Transactions on Systems, Man & Cybernetics. Systems JF - IEEE Transactions on Systems, Man & Cybernetics. Systems J1 - IEEE Transactions on Systems, Man & Cybernetics. Systems PY - 2014/04// Y1 - 2014/04// VL - 44 IS - 4 M3 - Article SP - 446 EP - 456 SN - 21682216 AB - System reliability has always been a challenging issue for many systems. In order to achieve high reliability, redundancy and voting schemes are often used to tolerate unintentional component failures. For unintentional failures caused by, for instance, normal wear-outs, hardware failures, or software bugs, etc., adding more redundancies often improves a system's reliability. However, when attack-caused failures exist, the number of redundant components and the number of participating voting entities may not be positively proportional to system reliability. In this paper, we study system reliability and system defense strategies when the system is under rational attacks. In particular, we analyze how defense and attack strategies may impact system reliability when both the defender and attacker are given a fixed amount of resources that can only be used for adding camouflaging components or enhancing existing components' cyber protection by defenders, or selecting a subset of components to attack by attackers, respectively. We also present an algorithm to decide the optimal defense strategy in fighting against rational attacks. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Systems, Man & Cybernetics. Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RELIABILITY (Engineering) KW - MAINTAINABILITY (Engineering) KW - SYSTEMS engineering KW - RESOURCE allocation KW - INTERNET security KW - ELECTRONIC systems KW - ALGORITHMS N1 - Accession Number: 94956971; Source Information: Apr2014, Vol. 44 Issue 4, p446; Subject Term: RELIABILITY (Engineering); Subject Term: MAINTAINABILITY (Engineering); Subject Term: SYSTEMS engineering; Subject Term: RESOURCE allocation; Subject Term: INTERNET security; Subject Term: ELECTRONIC systems; Subject Term: ALGORITHMS; Subject Term: ; Number of Pages: 11p; ; Document Type: Article; L3 - 10.1109/TSMC.2013.2263126 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=94956971&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Cook, Dr. James L. T1 - The Future of the Just War: New Critical Essays. JO - Journal of Military Ethics JF - Journal of Military Ethics J1 - Journal of Military Ethics PY - 2014/04// Y1 - 2014/04// VL - 13 IS - 2 M3 - Book Review SP - 203 EP - 210 PB - Routledge SN - 15027570 KW - FUTURE of the Just War: New Critical Essays, The (Book) KW - GENTRY, Caron E. KW - ECKERT, Amy E. KW - JUST war doctrine KW - NONFICTION N1 - Accession Number: 97901785; Source Information: 2014, Vol. 13 Issue 2, p203; Subject Term: FUTURE of the Just War: New Critical Essays, The (Book); Subject Term: GENTRY, Caron E.; Subject Term: ECKERT, Amy E.; Subject Term: JUST war doctrine; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 8p; ; Document Type: Book Review; L3 - 10.1080/15027570.2014.943035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=97901785&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR T1 - College Coaches Corner-CrossFit. AU - Petersen, Drew AU - Pinske, Kim AU - Greener, Trent JO - Strength & Conditioning Journal (Lippincott Williams & Wilkins) JF - Strength & Conditioning Journal (Lippincott Williams & Wilkins) Y1 - 2014/04// VL - 36 IS - 2 SP - 56 EP - 58 SN - 15241602 N1 - Accession Number: 95527976; Author: Petersen, Drew: 1 Author: Pinske, Kim: 2 Author: Greener, Trent: 3 ; Author Affiliation: 1 Department of Athletics, Humboldt State University, Arcata, California: 2 Department of Athletics, United States Air Force Academy, Colorado Springs, Colorado: 3 Department of Athletics, University of Wyoming, Laramie, Wyoming; No. of Pages: 3; Language: English; Publication Type: Article; Update Code: 20140412 N2 - The article presents the opinion of strength and conditioning coaches regarding the applicability of crossfit as a training method for athletes. United States Air Force Academy Assistant Strength and Conditioning Coach Kim Pinske does not recommend Crossfit as a viable program. University of Wyoming Head Strength and Conditioning Coach Trent Greener recommends separating and individually training the metabolic demands that make up power sports. KW - *CROSS-training (Sports) KW - *ATHLETIC trainers KW - *PHYSICAL training & conditioning KW - UNITED States Air Force Academy UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=95527976&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 2014-19840-006 AN - 2014-19840-006 AU - Ray, Marilyn A. AU - Turkel, Marian C. T1 - Caring as emancipatory nursing praxis: The theory of relational caring complexity. JF - Advances in Nursing Science JO - Advances in Nursing Science JA - ANS Adv Nurs Sci Y1 - 2014/04//Apr-Jun, 2014 VL - 37 IS - 2 SP - 132 EP - 146 CY - US PB - Lippincott Williams & Wilkins SN - 0161-9268 SN - 1550-5014 AD - Ray, Marilyn A., US Air Force, Nurse Corps., Christine E. Lynn College of Nursing, Florida Atlantic University, 777 Glades Road, Boca Raton, FL, US, 33431 N1 - Accession Number: 2014-19840-006. PMID: 24786202 Partial author list: First Author & Affiliation: Ray, Marilyn A.; United States Air Force, Nurse Corps., Florida Atlantic University, Boca Raton, FL, US. Release Date: 20141006. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Health Personnel Attitudes; Nurses; Nursing; Primary Health Care; Social Justice. Minor Descriptor: Childrearing Practices; Humanism; Theories. Classification: Home Care & Hospice (3375); Professional Personnel Attitudes & Characteristics (3430). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 15. Issue Publication Date: Apr-Jun, 2014. Copyright Statement: Unauthorized reproduction of this article is prohibited. Wolters Kluwer Health | Lippincott Williams & Wilkins. 2014. AB - In the culture of health care, nurses are challenged to understand their values and beliefs as humanistic within complex technical and economically driven bureaucratic systems. This article outlines the language of social justice and human rights and the advance of a Theory of Relational Caring Complexity, which offers insights into caring as emancipatory nursing praxis. Recommendations provide knowledge of the struggle to balance economics, technology, and caring. As nurses practice from a value-driven, philosophical, and ethical social justice framework, they will find 'their voice' and realize the full potential that the power of caring has on patient and organizational outcomes. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - health care KW - human rights KW - nursing praxis KW - social justice KW - nurses practice KW - relational caring complexity KW - 2014 KW - Health Personnel Attitudes KW - Nurses KW - Nursing KW - Primary Health Care KW - Social Justice KW - Childrearing Practices KW - Humanism KW - Theories KW - 2014 DO - 10.1097/ANS.0000000000000024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-19840-006&site=ehost-live&scope=site UR - mray@fau.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-20584-001 AN - 2013-20584-001 AU - Thomsen, Cynthia J. AU - Rabenhorst, Mandy M. AU - McCarthy, Randy J. AU - Milner, Joel S. AU - Travis, Wendy J. AU - Foster, Rachel E. AU - Copeland, Carol W. T1 - Child maltreatment before and after combat-related deployment among active-duty United States Air Force maltreating parents. JF - Psychology of Violence JO - Psychology of Violence Y1 - 2014/04// VL - 4 IS - 2 SP - 143 EP - 155 CY - US PB - Educational Publishing Foundation SN - 2152-0828 SN - 2152-081X AD - Thomsen, Cynthia J., Behavioral Science and Epidemiology Department, Naval Health Research Center, 140 Sylvester Road, San Diego, CA, US, 92106-3521 N1 - Accession Number: 2013-20584-001. Partial author list: First Author & Affiliation: Thomsen, Cynthia J.; Center for the Study of Family Violence and Sexual Assault, Northern Illinois University, IL, US. Release Date: 20130617. Correction Date: 20140414. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Rabenhorst, Mandy M. Major Descriptor: Air Force Personnel; Child Abuse; Combat Experience; Military Deployment; Parents. Classification: Criminal Behavior & Juvenile Delinquency (3236); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 13. Issue Publication Date: Apr, 2014. Publication History: First Posted Date: Jun 17, 2013; Accepted Date: Jan 3, 2013; Revised Date: Dec 26, 2012; First Submitted Date: Jul 8, 2012. Copyright Statement: American Psychological Association. 2013. AB - Objective: To conduct the first population-based study comparing the frequency of child maltreatment among active-duty United States Air Force (USAF) maltreating parents before and after combat-related deployment. Method: By combining archival databases, we identified 2,287 children with a total of 2,563 substantiated maltreatment incidents perpetrated by USAF parents who deployed during an 85-month study period during Operation Iraqi Freedom/Operation Enduring Freedom. Results: Contrary to expectations, overall the frequency of child maltreatment was significantly lower after than before deployment, and this pattern did not vary as a function of the number of combat-related deployments. Further, the frequency of child maltreatment was lower postdeployment relative to predeployment for emotional abuse, mild neglect, and maltreatment not involving alcohol, but the frequency was higher postdeployment for child sexual abuse and severe child neglect, particularly when severe child neglect involved alcohol. Conclusions: In general, among children who experienced parental maltreatment by a deploying USAF parent, milder forms of child maltreatment were less common postdeployment, whereas severe types of child maltreatment were more common. Possible explanations implicate predeployment differences in resources and functioning or postdeployment differences in posttraumatic growth and maturation between parental perpetrators of mild versus more severe maltreatment. Postdeployment child maltreatment surveillance efforts should be vigilant for signs of severe forms of child maltreatment, which appear to be most likely to increase. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Air Force KW - Operation Enduring Freedom KW - Operation Iraqi Freedom KW - child maltreatment KW - deployment KW - parents KW - 2014 KW - Air Force Personnel KW - Child Abuse KW - Combat Experience KW - Military Deployment KW - Parents KW - 2014 U1 - Sponsor: United States Air Force, Family Advocacy Program. Other Details: through a subcontract awarded to the second and fourth authors by Kansas State University and the National Institute of Food and Agriculture.. Recipients: Rabenhorst, Mandy M.; Milner, Joel S. DO - 10.1037/a0031766 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-20584-001&site=ehost-live&scope=site UR - cynthia.thomsen@med.navy.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2014-12853-012 AN - 2014-12853-012 AU - Rose, Mark R. AU - Barron, Laura G. AU - Carretta, Thomas R. AU - Arnold, Richard D. AU - Howse, William R. T1 - 'Early identification of unmanned aircraft pilots using measures of personality and aptitude': Corrigenda. JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 2014/04// VL - 24 IS - 2 SP - 153 EP - 153 CY - United Kingdom PB - Taylor & Francis SN - 1050-8414 SN - 1532-7108 AD - Rose, Mark R., HQ Air Force Personnel Center, Randolph AFB, TX, US, 78150 N1 - Accession Number: 2014-12853-012. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Rose, Mark R.; Air Force Personnel Center, Randolph Air Force Base, TX, US. Other Publishers: Lawrence Erlbaum. Release Date: 20140901. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Erratum/Correction. Language: English. Major Descriptor: Air Force Personnel; Aircraft Pilots; Military Training; Personality Measures; Psychometrics. Minor Descriptor: Aircraft. Classification: Occupational & Employment Testing (2228); Military Psychology (3800). Population: Human (10). Page Count: 1. Issue Publication Date: Apr, 2014. Copyright Statement: Taylor & Francis Group, LLC. 2014. AB - Reports an error in 'Early identification of unmanned aircraft pilots using measures of personality and aptitude' by Mark R. Rose, Laura G. Barron, Thomas R. Carretta, Richard D. Arnold and William R. Howse (The International Journal of Aviation Psychology, 2014[Jan], Vol 24[1], 36-52). The article was printed with the incorrect manuscript received date. However, it was received in June 2012. (The following abstract of the original article appeared in record [rid]2014-00458-005[/rid]). This study evaluated the extent to which personality measures (Self-Description Inventory+) could improve prediction of remotely piloted aircraft (RPA) training outcomes, beyond currently used cognitive, psychomotor, and aviation knowledge and experience predictors included in the U.S. Air Force (USAF) Pilot Candidate Selection Method 2.0. Participants were 170 USAF officers with RPA Initial Flight Screening (RFS) outcomes and 110 USAF officers with RPA Instrument Qualification (RIQ) outcomes. Both RFS and RIQ emphasize development of skills traditionally required for manned aircraft pilots, also considered essential for USAF RPA pilots. Results showed significant negative relationships between the Big Five personality trait of Openness and several RPA training outcomes, and significant incremental variance explained by Openness beyond other predictors. Additionally, RFS and RIQ training outcomes were generally predicted by measures traditionally used for selection into manned aircraft pilot training courses and careers. Together, these findings suggest that personality, specifically Openness scores, and scores on traditional pilot selection measures, can serve as useful indicators in the early identification of RPA pilot talent. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - Self-Description Inventory KW - aircraft training KW - Air Force KW - military training KW - psychometrics KW - personality measures KW - remotely piloted aircraft KW - drone operation KW - 2014 KW - Air Force Personnel KW - Aircraft Pilots KW - Military Training KW - Personality Measures KW - Psychometrics KW - Aircraft KW - 2014 DO - 10.1080/10508414.2014.899011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-12853-012&site=ehost-live&scope=site UR - Mark.Rose.7@US.AF.Mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2014-12853-013 AN - 2014-12853-013 AU - Rose, Mark R. AU - Barron, Laura G. AU - Carretta, Thomas R. AU - Arnold, Richard D. AU - Howse, William R. T1 - 'Commentary on the article by Rose et al.: Search for the right stuff': Corrigenda. JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 2014/04// VL - 24 IS - 2 SP - 153 EP - 153 CY - United Kingdom PB - Taylor & Francis SN - 1050-8414 SN - 1532-7108 AD - Rose, Mark R., HQ Air Force Personnel Center, Randolph AFB, TX, US, 78150 N1 - Accession Number: 2014-12853-013. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Rose, Mark R.; Air Force Personnel Center, Randolph Air Force Base, TX, US. Other Publishers: Lawrence Erlbaum. Release Date: 20140901. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Erratum/Correction. Language: English. Major Descriptor: Air Force Personnel; Aircraft Pilots; Military Training; Personality Measures; Psychometrics. Minor Descriptor: Aircraft. Classification: Occupational & Employment Testing (2228); Military Psychology (3800). Population: Human (10). Page Count: 1. Issue Publication Date: Apr, 2014. Copyright Statement: Taylor & Francis Group, LLC. 2014. AB - Reports an error in 'Commentary on the article by Rose et al.: Search for the right stuff' by Anthony P. Tvaryanas (The International Journal of Aviation Psychology, 2014[Jan], Vol 24[1], 57-60). The original article was printed with the incorrect manuscript received dates. (The following abstract of the original article appeared in record [rid]2014-00458-007[/rid]). Comments on an article by Mark R. Rose et al. (see record [rid]2014-00458-005[/rid]). The exponential progress in unmanned aviation and the emergence of the remotely piloted aircraft (RPA) pilot over the past decade raise the specter of a potential new class of virtual warriors. Mark R. Rose and colleagues add a valuable piece to the RPA pilot selection puzzle regarding the potential efficacy of personality testing. the contributions and gaps in the study by Rose and colleagues are clearer. A particular strength of their study was its confirmatory design; that is, the investigators offered an a priori hypothesis about the correlation of Openness with training performance. Interestingly, the investigators proposed a negative correlation, which is opposite in directionality of the general meta-analytic finding that Openness is an acceptable predictor of training performance. Nevertheless, the study results affirmed the hypothesis, illustrating the aforementioned need to carefully consider context and task dependency in predicting correlations between personality and performance indexes. Putting the issue of associative directionality aside, the magnitude of the correlation for Openness was consistent with that reported in the meta-analytic studies. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - Self-Description Inventory KW - aircraft training KW - Air Force KW - military training KW - psychometrics KW - personality measures KW - remotely piloted aircraft KW - drone operation KW - 2014 KW - Air Force Personnel KW - Aircraft Pilots KW - Military Training KW - Personality Measures KW - Psychometrics KW - Aircraft KW - 2014 DO - 10.1080/10508414.2014.899011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-12853-013&site=ehost-live&scope=site UR - Mark.Rose.7@US.AF.Mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2014-14301-008 AN - 2014-14301-008 AU - Veksler, Vladislav D. AU - Myers, Christopher W. AU - Gluck, Kevin A. T1 - SAwSu: An integrated model of associative and reinforcement learning. JF - Cognitive Science JO - Cognitive Science JA - Cogn Sci Y1 - 2014/04// VL - 38 IS - 3 SP - 580 EP - 598 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0364-0213 SN - 1551-6709 AD - Veksler, Vladislav D., Air Force Research Laboratory, Wright-Patterson AFB, OH, US, 45433 N1 - Accession Number: 2014-14301-008. PMID: 24460979 Partial author list: First Author & Affiliation: Veksler, Vladislav D.; Air Force Research Laboratory, Wright-Patterson AFB, OH, US. Other Publishers: Elsevier Science; Lawrence Erlbaum; Taylor & Francis. Release Date: 20140915. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Conference Information: Annual Meeting of the Cognitive Science Society (CogSci2012), 34th. Conference Note: Earlier versions of subsets of this research were reported in the proceedings of the aforementioned conference. Major Descriptor: Associative Processes; Cognition; Decision Making; Reinforcement. Minor Descriptor: Models. Classification: Human Experimental Psychology (2300). Population: Human (10). References Available: Y. Page Count: 19. Issue Publication Date: Apr, 2014. Publication History: Accepted Date: Mar 28, 2013; Revised Date: Mar 13, 2013; First Submitted Date: Jun 26, 2012. Copyright Statement: All rights reserved. Cognitive Science Society, Inc. 2014. AB - Abstract Successfully explaining and replicating the complexity and generality of human and animal learning will require the integration of a variety of learning mechanisms. Here, we introduce a computational model which integrates associative learning (AL) and reinforcement learning (RL). We contrast the integrated model with standalone AL and RL models in three simulation studies. First, a synthetic grid‐navigation task is employed to highlight performance advantages for the integrated model in an environment where the reward structure is both diverse and dynamic. The second and third simulations contrast the performances of the three models in behavioral experiments, demonstrating advantages for the integrated model in accounting for behavioral data. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - associative learning KW - cognitive modeling KW - cognitive system KW - decision making KW - integrated models KW - learning KW - reinforcement learning KW - 2014 KW - Associative Processes KW - Cognition KW - Decision Making KW - Reinforcement KW - Models KW - 2014 DO - 10.1111/cogs.12103 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-14301-008&site=ehost-live&scope=site UR - vdv718@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Gonzales, Ashley E. AU - Koo, Justin W. AU - Hargus, William A. T1 - Comparison of Numerical and Experimental Time-Resolved Near-Field Hall Thruster Plasma Properties. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2014/03/15/Mar2014 Part 2 Y1 - 2014/03/15/Mar2014 Part 2 VL - 42 IS - 3 M3 - Article SP - 806 EP - 812 SN - 00933813 AB - Breathing mode oscillations of a xenon 600 W Hall effect thruster have been studied using temporally resolved experimental data and numerical modeling. Fluctuations in xenon neutral near infrared (810–835 nm) emission in the near field thruster plume have been measured at 1-\mus resolution using a high speed, phase-matched intensified charge coupled device. Oscillations in electron temperature, 3–9 eV, have been inferred using a collisional-radiative model and a two-line ratio method. The time-resolved emission and electron temperature measurements are then used to assess the accuracy of the numerical model HPHall. Although simulations were able to accurately predict the time averaged thruster behavior, the model greatly under predicts the magnitude of the oscillations. General phase trends between the discharge current and emission as well as electron temperature are consistent with observations, suggesting that the model is capable of capturing some of the oscillatory behavior despite the dampening of the oscillations. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HALL effect in ionized gases KW - PLASMA (Ionized gases) KW - XENON KW - OSCILLATIONS KW - NUMERICAL analysis KW - NEAR-fields N1 - Accession Number: 94892209; Source Information: Mar2014 Part 2, Vol. 42 Issue 3, p806; Subject Term: HALL effect in ionized gases; Subject Term: PLASMA (Ionized gases); Subject Term: XENON; Subject Term: OSCILLATIONS; Subject Term: NUMERICAL analysis; Subject Term: NEAR-fields; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TPS.2014.2301038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=94892209&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 104035370 T1 - Cleaning of filtering facepiece respirators contaminated with mucin and Staphylococcus aureus. AU - Heimbuch, Brian K. AU - Kinney, Kimberly AU - Lumley, April E. AU - Harnish, Delbert A. AU - Bergman, Michael AU - Wander, Joseph D. Y1 - 2014/03// N1 - Accession Number: 104035370. Language: English. Entry Date: 20140228. Revision Date: 20150710. Publication Type: Journal Article; research. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. NLM UID: 8004854. KW - Respiratory Protective Devices KW - Equipment Contamination KW - Microbial Contamination KW - Cross Infection -- Prevention and Control KW - Sterilization and Disinfection -- Evaluation KW - Disinfectants KW - Equipment Reuse KW - Models, Structural KW - Aerosols KW - Evaluation Research KW - Staphylococcus Aureus KW - Glycoproteins SP - 265 EP - 270 JO - American Journal of Infection Control JF - American Journal of Infection Control JA - AM J INFECT CONTROL VL - 42 IS - 3 CY - New York, New York PB - Elsevier Science AB - Background: Decontamination, cleaning, and reuse of filtering facepiece respirators (FFRs) has been proposed to mitigate an acute FFR shortage during a public health emergency. Our study evaluates the ability of commercially available wipe products to clean FFRs contaminated with either infectious or noninfectious aerosols. Methods: Three models of surgical N95 FFRs were contaminated with aerosols of mucin or viable Staphylococcus aureus then cleaned with hypochlorite, benzalkonium chloride, or nonantimicrobial wipes. After cleaning, FFRs were separated into components (nose pad, fabrics, and perforated strip), and contaminants were extracted and quantified. Filtration performance was assessed for cleaned FFRs. Results: Mucin removal was <1 log for all wipe products on all components. Inert wipes achieved ∼1-log attenuation in viable S aureus on fabrics from all FFR models—removal was less effective from nose pads and perforated edges. Both antimicrobial wipes achieved 3-5-log attenuation on most components, with smaller reductions on nose pads and greater reductions on perforated strips. Particle penetration following cleaning yielded mean values <5%. The highest penetrations were observed in FFRs cleaned with benzalkonium chloride wipes. Conclusions: FFRs can be disinfected using antimicrobial wipe products, but not effectively cleaned with the wipes evaluated in this study. This study provides informative data for the development of better FFRs and applicable cleaning products. SN - 0196-6553 AD - Applied Research Associates, Panama City, FL AD - National Institute for Occupational Safety and Health, Pittsburgh, PA AD - Air Force Research Laboratory, Tyndall Air Force Base, FL U2 - PMID: 24462175. DO - 10.1016/j.ajic.2013.09.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104035370&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Lipke, David W. AU - Ushakov, Sergey V. AU - Navrotsky, Alexandra AU - Hoffman, Wesley P. T1 - Ultra-high temperature oxidation of a hafnium carbide-based solid solution ceramic composite. JO - Corrosion Science JF - Corrosion Science Y1 - 2014/03// VL - 80 M3 - Article SP - 402 EP - 407 SN - 0010938X AB - Highlights: [•] Cr3C2 is a useful transient liquid phase sintering agent for carbide-based ceramics. [•] Low atomic mass cations (e.g., Cr or Ti) can rapidly diffuse through oxide scales. [•] Minor second phase additions can promote limited liquid formation for pore filling. [•] Oxycarbide interlayer may comprise nanocrystalline graphite in amorphous oxide. [ABSTRACT FROM AUTHOR] AB - Copyright of Corrosion Science is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Oxidation KW - Solid solutions KW - High temperatures KW - Hafnium compounds KW - Ceramic materials KW - Sintering KW - Graphite KW - Chromium compounds KW - A. Ceramic KW - C. High temperature corrosion KW - C. Oxidation N1 - Accession Number: 93590867; Lipke, David W. 1; Email Address: lipke@alfred.edu; Ushakov, Sergey V. 2; Navrotsky, Alexandra 2; Hoffman, Wesley P. 1; Affiliations: 1: Air Force Research Laboratory, AFRL/RQRC, Edwards AFB, CA 93524, USA; 2: Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California at Davis, Davis, CA 95616, USA; Issue Info: Mar2014, Vol. 80, p402; Thesaurus Term: Oxidation; Thesaurus Term: Solid solutions; Subject Term: High temperatures; Subject Term: Hafnium compounds; Subject Term: Ceramic materials; Subject Term: Sintering; Subject Term: Graphite; Subject Term: Chromium compounds; Author-Supplied Keyword: A. Ceramic; Author-Supplied Keyword: C. High temperature corrosion; Author-Supplied Keyword: C. Oxidation; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; NAICS/Industry Codes: 212210 Iron Ore Mining; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.corsci.2013.11.049 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=93590867&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Aguilar, Suzette M. AU - Al-Joumayly, Mudar A. AU - Burfeindt, Matthew J. AU - Behdad, Nader AU - Hagness, Susan C. T1 - Multiband Miniaturized Patch Antennas for a Compact, Shielded Microwave Breast Imaging Array. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2014/03// Y1 - 2014/03// VL - 62 IS - 3 M3 - Article SP - 1221 EP - 1231 SN - 0018926X AB - We present a comprehensive study of a class of multiband miniaturized patch antennas designed for use in a 3-D enclosed sensor array for microwave breast imaging. Miniaturization and multiband operation are achieved by loading the antenna with nonradiating slots at strategic locations along the patch. This results in symmetric radiation patterns and similar radiation characteristics at all frequencies of operation. Prototypes were fabricated and tested in a biocompatible immersion medium. Excellent agreement was obtained between simulations and measurements. The tradeoff between miniaturization and radiation efficiency within this class of patch antennas is explored via a numerical analysis of the effects of the location and number of slots, as well as the thickness and permittivity of the dielectric substrate, on the resonant frequencies and gain. Additionally, we compare 3-D quantitative microwave breast imaging performance achieved with two different enclosed arrays of slot-loaded miniaturized patch antennas. Simulated array measurements were obtained for a 3-D anatomically realistic numerical breast phantom. The reconstructed breast images generated from miniaturized patch array data suggest that, for the realistic noise power levels assumed in this study, the variations in gain observed across this class of multiband patch antennas do not significantly impact the overall image quality. We conclude that these miniaturized antennas are promising candidates as compact array elements for shielded, multifrequency microwave breast imaging systems. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRIP antennas -- Research KW - MICROWAVE imaging in medicine KW - BREAST -- Imaging -- Research KW - ANTENNAS (Electronics) -- Research KW - DIAGNOSTIC imaging -- Research N1 - Accession Number: 94764026; Source Information: Mar2014, Vol. 62 Issue 3, p1221; Subject Term: MICROSTRIP antennas -- Research; Subject Term: MICROWAVE imaging in medicine; Subject Term: BREAST -- Imaging -- Research; Subject Term: ANTENNAS (Electronics) -- Research; Subject Term: DIAGNOSTIC imaging -- Research; Subject Term: ; Number of Pages: 11p; ; Document Type: Article; L3 - 10.1109/TAP.2013.2295615 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=94764026&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Williams, Dylan F. AU - Corson, Phillip AU - Sharma, Jahnavi AU - Krishnaswamy, Harish AU - Tai, Wei AU - George, Zacharias AU - Ricketts, David S. AU - Watson, Paul M. AU - Dacquay, Eric AU - Voinigescu, Sorin P. T1 - Calibrations for Millimeter-Wave Silicon Transistor Characterization. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques Y1 - 2014/03// VL - 62 IS - 3 M3 - Article SP - 658 EP - 668 SN - 00189480 AB - This paper compares on-wafer thru-reflect-line (TRL) and off-wafer short-open-load-thru (SOLT) and line-reflect-reflect-match (LRRM) vector-network-analyzer probe-tip calibrations for amplifier characterization and parasitic-extraction calibrations for transistor characterization on silicon integrated circuits at millimeter-wave frequencies. We show that on-wafer calibrations generally outperform off-wafer and LRRM probe-tip calibrations at millimeter-wave frequencies. However, certain parasitic-extraction algorithms designed specifically to remove contact pads, transmission-lines, and access vias correct for much of the error in off-wafer calibrations. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTEGRATED circuits KW - ELECTRIC network analyzers KW - POWER amplifiers KW - FIELD-effect transistors KW - ELECTRIC lines KW - ELECTRIC measurements KW - Calibration KW - measurement KW - millimeter wave KW - Power transmission lines KW - Probes KW - scattering parameters KW - Silicon KW - Substrates KW - transistor KW - Transistors KW - Transmission line measurements KW - vector network analyzer (VNA) N1 - Accession Number: 94842647; Williams, Dylan F. 1; Corson, Phillip 2; Sharma, Jahnavi 3; Krishnaswamy, Harish 3; Tai, Wei 4; George, Zacharias 4; Ricketts, David S. 4; Watson, Paul M. 5; Dacquay, Eric 6; Voinigescu, Sorin P. 6; Affiliations: 1: National Institute of Standards and Technology, Boulder, CO, USA; 2: IBM Semiconductor Research and Development Center, Essex Junction,; 3: Department of Electrical Engineering, Columbia University, New York, New York, USA; 4: Electrical and Computer Engineering Department, Carnegie Mellon University, Pittsburgh, PA, USA; 5: Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio, USA; 6: Electrical and Computer Engineering Department, University of Toronto, Toronto, Canada; Issue Info: Mar2014, Vol. 62 Issue 3, p658; Thesaurus Term: INTEGRATED circuits; Subject Term: ELECTRIC network analyzers; Subject Term: POWER amplifiers; Subject Term: FIELD-effect transistors; Subject Term: ELECTRIC lines; Subject Term: ELECTRIC measurements; Author-Supplied Keyword: Calibration; Author-Supplied Keyword: measurement; Author-Supplied Keyword: millimeter wave; Author-Supplied Keyword: Power transmission lines; Author-Supplied Keyword: Probes; Author-Supplied Keyword: scattering parameters; Author-Supplied Keyword: Silicon; Author-Supplied Keyword: Substrates; Author-Supplied Keyword: transistor; Author-Supplied Keyword: Transistors; Author-Supplied Keyword: Transmission line measurements; Author-Supplied Keyword: vector network analyzer (VNA); NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238910 Site Preparation Contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TMTT.2014.2300839 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=94842647&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 109589856 T1 - Comparison of high-volume air sampling equipment for viral aerosol sampling during emergency response. AU - Cooper, Casey AU - Slagley, Jeremy AU - Lohaus Jr, James AU - Escamilla, Elizabeth AU - Bliss, Christopher AU - Semler, Diana AU - Felker, Daniel AU - Smith, David AU - Ott, Darrin Y1 - 2014/03//Mar/Apr2014 N1 - Accession Number: 109589856. Language: English. Entry Date: 20150923. Revision Date: 20150923. Publication Type: Journal Article. Journal Subset: Allied Health; Double Blind Peer Reviewed; Editorial Board Reviewed; Peer Reviewed; USA. Special Interest: Emergency Care. NLM UID: 101284695. SP - 161 EP - 170 JO - Journal of Emergency Management JF - Journal of Emergency Management JA - J EMERG MANAGE VL - 12 IS - 2 CY - Weston, Massachusetts PB - Weston Medical Publishing, LLC SN - 1543-5865 AD - 19th Aerospace Medicine Squadron, Little Rock Air Force Base, Arkansas AD - Assistant Professor, Department of Safety Sciences, Indiana University of Pennsylvania, Indiana, Pennsylvania AD - Department of Veterans Affairs Medical Center, Long Beach, California AD - United States Air Force School of Aerospace Medicine, Wright-Patterson AFB, Ohio AD - Dycor Technologies Ltd., Edmonton, Alberta, Canada AD - Air Force Institute of Technology, Wright-Patterson AFB, Ohio AD - Air Force Medical Support Agency, Rossyln, Virginia DO - 10.5055/jem.2014.0170 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109589856&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Guthrie, O'neil W. AU - Xu, Helen AU - Wong, Brian A. AU - McInturf, Shawn M. AU - Reboulet, Jim E. AU - Ortiz, Pedro A. AU - Mattie, David R. T1 - Exposure to Low Levels of Jet-Propulsion Fuel Impairs Brainstem Encoding of Stimulus Intensity. JO - Journal of Toxicology & Environmental Health: Part A JF - Journal of Toxicology & Environmental Health: Part A Y1 - 2014/03// VL - 77 IS - 5 M3 - Article SP - 261 EP - 280 SN - 15287394 AB - Jet propulsion fuel-8 (JP-8) is a kerosene-based fuel that is used in military jets. The U.S. Armed Services and North Atlantic Treaty Organization countries adopted JP-8 as a standard fuel source and the U.S. military alone consumes more than 2.5 billion gallons annually. Preliminary epidemiologic data suggested that JP-8 may interact with noise to induce hearing loss, and animal studies revealed damage to presynaptic sensory cells in the cochlea. In the current study, Long-Evans rats were divided into four experimental groups: control, noise only, JP-8 only, and JP-8 + noise. A subototoxic level of JP-8 was used alone or in combination with a nondamaging level of noise. Functional and structural assays of the presynaptic sensory cells combined with neurophysiologic studies of the cochlear nerve revealed that peripheral auditory function was not affected by individual exposures and there was no effect when the exposures were combined. However, the central auditory nervous system exhibited impaired brainstem encoding of stimulus intensity. These findings may represent important and major shifts in the theoretical framework that governs current understanding of jet fuel and/or jet fuel + noise-induced ototoxicity. From an epidemiologic perspective, results indicate that jet fuel exposure may exert consequences on auditory function that may be more widespread and insidious than what was previously shown. It is possible that a large population of military personnel who are suffering from the effects of jet fuel exposure may be misidentified because they would exhibit normal hearing thresholds but harbor a “hidden” brainstem dysfunction. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Toxicology & Environmental Health: Part A is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUEL KW - Kerosene as fuel KW - Jet propulsion KW - Jet planes KW - Brain stem KW - North Atlantic Treaty Organization N1 - Accession Number: 94757952; Guthrie, O'neil W. 1,2; Email Address: O'neil.Guthrie@va.gov; Xu, Helen 2; Wong, Brian A. 3; McInturf, Shawn M. 3; Reboulet, Jim E. 3; Ortiz, Pedro A. 3; Mattie, David R. 4; Affiliations: 1: Research Service-151, Loma Linda Veterans Affairs Medical Center, Loma Linda, California, USA; 2: Department of Otolaryngology and Head & Neck Surgery, School of Medicine, Loma Linda University Medical Center, Loma Linda, California, USA; 3: Naval Medical Research Unit–Dayton, Wright-Patterson, Air Force Base, Ohio, USA; 4: Molecular Bioeffects Branch, Bioeffects Division, 711 Human Performance Wing, Human Effectiveness Directorate, Air Force Research Laboratory (711 HPW/RHDJ), Wright-Patterson Air Force Base, Ohio, USA; Issue Info: Mar2014, Vol. 77 Issue 5, p261; Thesaurus Term: FUEL; Thesaurus Term: Kerosene as fuel; Subject Term: Jet propulsion; Subject Term: Jet planes; Subject Term: Brain stem ; Company/Entity: North Atlantic Treaty Organization; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 20p; Document Type: Article L3 - 10.1080/15287394.2013.862892 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=94757952&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2014-06651-006 AN - 2014-06651-006 AU - Helton, William S. AU - Funke, Gregory J. AU - Knott, Benjamin A. T1 - Measuring workload in collaborative contexts: Trait versus state perspectives. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2014/03// VL - 56 IS - 2 SP - 322 EP - 332 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Helton, William S., Department of Psychology University of Canterbury, Private Bag 4800, Christchurch, New Zealand, 8140 N1 - Accession Number: 2014-06651-006. PMID: 24689251 Partial author list: First Author & Affiliation: Helton, William S.; University of Canterbury, Christchurch, New Zealand. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20140310. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Collaboration; Disasters; Simulation; Teams; Work Load. Classification: Human Factors Engineering (4010). Population: Human (10); Male (30); Female (40). Location: New Zealand. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: NASA Task Load Index-Modified Version. Methodology: Empirical Study; Quantitative Study; Scientific Simulation. References Available: Y. Page Count: 11. Issue Publication Date: Mar, 2014. Publication History: Accepted Date: Apr 24, 2013; First Submitted Date: Jun 21, 2012. Copyright Statement: Human Factors and Ergonomics Society. 2013. AB - Objective: In the present study, we explored the state versus trait aspects of measures of task and team workload in a disaster simulation. Background: There is often a need to assess workload in both individual and collaborative settings. Researchers in this field often use the NASA Task Load Index (NASA-TLX) as a global measure of workload by aggregating the NASA-TLX’s component items. Using this practice, one may overlook the distinction between traits and states. Method: Fifteen dyadic teams (11 inexperienced, 4 experienced) completed five sessions of a tsunami disaster simulator. After every session, individuals completed a modified version of the NASA-TLX that included team workload measures. We then examined the workload items by using a between-subjects and within-subjects perspective. Results: Between-subjects and within-subjects correlations among the items indicated the workload items are more independent within subjects (as states) than between subjects (as traits). Correlations between the workload items and simulation performance were also different at the trait and state levels. Conclusion: Workload may behave differently at trait (between-subjects) and state (within-subjects) levels. Application: Researchers interested in workload measurement as a state should take a within-subjects perspective in their analyses. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - team workload KW - trait versus state perspectives KW - disaster simulation KW - collaborative contexts KW - 2014 KW - Collaboration KW - Disasters KW - Simulation KW - Teams KW - Work Load KW - 2014 DO - 10.1177/0018720813490727 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-06651-006&site=ehost-live&scope=site UR - Deak.Helton@canterbury.ac.nz DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-23791-001 AN - 2013-23791-001 AU - Walsh, Matthew M. AU - Anderson, John R. T1 - Navigating complex decision spaces: Problems and paradigms in sequential choice. JF - Psychological Bulletin JO - Psychological Bulletin JA - Psychol Bull Y1 - 2014/03// VL - 140 IS - 2 SP - 466 EP - 486 CY - US PB - American Psychological Association SN - 0033-2909 SN - 1939-1455 AD - Walsh, Matthew M., Air Force Research Laboratory, Wright-Patterson Air Force Base, 711 HPW/RHAC—Cognitive Models and Agents Branch, 2620 Q Street, Building 852, OH, US, 45433 N1 - Accession Number: 2013-23791-001. PMID: 23834192 Partial author list: First Author & Affiliation: Walsh, Matthew M.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Other Publishers: Psychological Review Company; The Macmillan Company; The Review Publishing Company. Release Date: 20130708. Correction Date: 20140224. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Walsh, Matthew M. Major Descriptor: Choice Behavior; Decision Making; Reinforcement; Sequential Learning. Classification: Learning & Memory (2343). Population: Human (10). Methodology: Mathematical Model. References Available: Y. Page Count: 21. Issue Publication Date: Mar, 2014. Publication History: First Posted Date: Jul 8, 2013; Accepted Date: May 8, 2013; Revised Date: May 2, 2013; First Submitted Date: Jun 17, 2012. Copyright Statement: American Psychological Association. 2013. AB - To behave adaptively, we must learn from the consequences of our actions. Doing so is difficult when the consequences of an action follow a delay. This introduces the problem of temporal credit assignment. When feedback follows a sequence of decisions, how should the individual assign credit to the intermediate actions that comprise the sequence? Research in reinforcement learning provides 2 general solutions to this problem: model-free reinforcement learning and model-based reinforcement learning. In this review, we examine connections between stimulus–response and cognitive learning theories, habitual and goal-directed control, and model-free and model-based reinforcement learning. We then consider a range of problems related to temporal credit assignment. These include second-order conditioning and secondary reinforcers, latent learning and detour behavior, partially observable Markov decision processes, actions with distributed outcomes, and hierarchical learning. We ask whether humans and animals, when faced with these problems, behave in a manner consistent with reinforcement learning techniques. Throughout, we seek to identify neural substrates of model-free and model-based reinforcement learning. The former class of techniques is understood in terms of the neurotransmitter dopamine and its effects in the basal ganglia. The latter is understood in terms of a distributed network of regions including the prefrontal cortex, medial temporal lobes, cerebellum, and basal ganglia. Not only do reinforcement learning techniques have a natural interpretation in terms of human and animal behavior but they also provide a useful framework for understanding neural reward valuation and action selection. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - reinforcement learning KW - sequential choice KW - temporal credit assignment KW - 2014 KW - Choice Behavior KW - Decision Making KW - Reinforcement KW - Sequential Learning KW - 2014 U1 - Sponsor: National Institute of Mental Health. Grant: T32MH019983. Other Details: Training Grant. Recipients: Walsh, Matthew M. U1 - Sponsor: National Institute of Mental Health. Grant: MH068243. Recipients: Anderson, John R. DO - 10.1037/a0033455 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-23791-001&site=ehost-live&scope=site UR - matthew.walsh.ctr@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Hearn, John AU - Eichler, Jeffery AU - Hare, Christopher AU - Henley, Michael T1 - Effect of soil moisture on chlorine deposition. JO - Journal of Hazardous Materials JF - Journal of Hazardous Materials Y1 - 2014/02/28/ VL - 267 M3 - Article SP - 81 EP - 87 SN - 03043894 AB - Highlights: [•] Moisture increases chlorine's reaction rate with soil constituents. [•] Moisture decreases chlorine's transport rate through the soil. [•] Cl2 deposition rate is maximized when water filled 30–50% of the soil void space. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Hazardous Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Soil moisture KW - Sedimentation & deposition KW - Soil composition KW - Chlorine in soils KW - Soil testing KW - Chemical reactions KW - Chlorine deposition KW - Toxic industrial chemical N1 - Accession Number: 94578460; Hearn, John 1; Email Address: jhearn@leeuniversity.edu; Eichler, Jeffery 2; Hare, Christopher 1; Henley, Michael 3; Affiliations: 1: Air Force Research Laboratory, Airbase Technologies Division, 139 Barnes Dr. Suite 2, Tyndall AFB, FL 32403, United States; 2: Universal Technology Corporation, 139 Barnes Dr. Suite 2, Tyndall AFB, FL 32403, United States; 3: Air Force Civil Engineer Center, 139 Barnes Dr. Suite 2, Tyndall AFB, FL 32403, United States; Issue Info: Feb2014, Vol. 267, p81; Thesaurus Term: Soil moisture; Thesaurus Term: Sedimentation & deposition; Thesaurus Term: Soil composition; Thesaurus Term: Chlorine in soils; Thesaurus Term: Soil testing; Subject Term: Chemical reactions; Author-Supplied Keyword: Chlorine deposition; Author-Supplied Keyword: Toxic industrial chemical; NAICS/Industry Codes: 238910 Site Preparation Contractors; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jhazmat.2013.12.044 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=94578460&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Medwell, Paul R. AU - Blunck, David L. AU - Dally, Bassam B. T1 - The role of precursors on the stabilisation of jet flames issuing into a hot environment. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2014/02// VL - 161 IS - 2 M3 - Article SP - 465 EP - 474 SN - 00102180 AB - Abstract: This paper seeks to address unusual flame stabilisation behaviour observed in experimental jet flames which issue into a hot coflow. It has been observed that increasing the temperature and/or oxygen concentration in the coflow can lead to an increase in flame liftoff height. The paper isolates the role of chemistry, and in particular flame intermediates, on the observed phenomenon with a view to better understand how the behaviour changes over a range of conditions. A descriptive theory for this behaviour is proposed, which is based on the well-established theory that a build-up of radicals and intermediate species is responsible for autoignition of these flames. This paper systematically examines the role of these precursors with a view to better understanding of the chemical kinetics and to assess if the observed behaviour is chemistry-dominated. To this end, laminar flame calculations and ignition delay curves are presented, and the findings are validated with experiments. The results indicate that chemical effects alone are insufficient to fully explain the observations, but the calculations support the general trends noted in the experiments and highlight the importance and relative effects of some key precursors. In particular, the production and consumption of formaldehyde in a low oxygen environment supports the unusual flame behaviour observed experimentally. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Chemical precursors KW - Formaldehyde KW - Flame KW - Temperature effect KW - Chemical models KW - Chemical kinetics KW - Hot coflow KW - Jet in hot coflow burner KW - Lifted flames KW - Vitiated coflow burner N1 - Accession Number: 93267595; Medwell, Paul R. 1; Email Address: paul.medwell@adelaide.edu.au; Blunck, David L. 2; Dally, Bassam B. 1; Affiliations: 1: School of Mechanical Engineering, The University of Adelaide, SA 5005, Australia; 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, USA; Issue Info: Feb2014, Vol. 161 Issue 2, p465; Thesaurus Term: Chemical precursors; Thesaurus Term: Formaldehyde; Subject Term: Flame; Subject Term: Temperature effect; Subject Term: Chemical models; Subject Term: Chemical kinetics; Author-Supplied Keyword: Hot coflow; Author-Supplied Keyword: Jet in hot coflow burner; Author-Supplied Keyword: Lifted flames; Author-Supplied Keyword: Vitiated coflow burner; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.combustflame.2013.08.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=93267595&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Veremyev, Alexander AU - Sorokin, Alexey AU - Boginski, Vladimir AU - Pasiliao, Eduardo L. T1 - Minimum vertex cover problem for coupled interdependent networks with cascading failures. JO - European Journal of Operational Research JF - European Journal of Operational Research Y1 - 2014/02// VL - 232 IS - 3 M3 - Article SP - 499 EP - 511 SN - 03772217 AB - Highlights: [•] Minimum vertex cover problem is extended to the framework of interdependent networks. [•] Cascading failure mechanisms in coupled interdependent networks are considered. [•] NP-completeness of all introduced problems is shown. [•] Linear 0–1 formulations are developed; generalized LP approximation ratio is derived. [•] The concept of “depth of cascade” is proposed and analyzed. [ABSTRACT FROM AUTHOR] AB - Copyright of European Journal of Operational Research is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LINEAR programming KW - PROBLEM solving KW - APPROXIMATION theory KW - COMPLETENESS theorem KW - GENERALIZATION KW - Cascading failures KW - Depth of cascade KW - Interdependent networks KW - Linear 0–1 formulations KW - LP approximation KW - Minimum vertex cover N1 - Accession Number: 90422051; Veremyev, Alexander 1,2; Email Address: averemyev@ufl.edu; Sorokin, Alexey 2; Email Address: sorokin@ufl.edu; Boginski, Vladimir 2; Email Address: vb@ufl.edu; Pasiliao, Eduardo L. 1; Email Address: pasiliao@eglin.af.mil; Affiliations: 1: Munitions Directorate, Air Force Research Laboratory, 101 W. Eglin Blvd, Eglin AFB, FL 32542, United States; 2: Department of Industrial and Systems Engineering, University of Florida, 303 Weil Hall, Gainesville, FL 32611, United States; Issue Info: Feb2014, Vol. 232 Issue 3, p499; Thesaurus Term: LINEAR programming; Thesaurus Term: PROBLEM solving; Thesaurus Term: APPROXIMATION theory; Subject Term: COMPLETENESS theorem; Subject Term: GENERALIZATION; Author-Supplied Keyword: Cascading failures; Author-Supplied Keyword: Depth of cascade; Author-Supplied Keyword: Interdependent networks; Author-Supplied Keyword: Linear 0–1 formulations; Author-Supplied Keyword: LP approximation; Author-Supplied Keyword: Minimum vertex cover; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.ejor.2013.08.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=90422051&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Bergman, Michael S. AU - Zhuang, Ziqing AU - Hanson, David AU - Heimbuch, Brian K. AU - McDonald, Michael J. AU - Palmiero, Andrew J. AU - Shaffer, Ronald E. AU - Harnish, Delbert AU - Husband, Michael AU - Wander, Joseph D. T1 - Development of an Advanced Respirator Fit-Test Headform. JO - Journal of Occupational & Environmental Hygiene JF - Journal of Occupational & Environmental Hygiene Y1 - 2014/02// VL - 11 IS - 2 M3 - Article SP - 117 EP - 125 PB - Taylor & Francis Ltd SN - 15459624 AB - Improved respirator test headforms are needed to measure the fit of N95 filtering facepiece respirators (FFRs) for protection studies against viable airborne particles. A Static (i.e., non-moving, non-speaking) Advanced Headform (StAH) was developed for evaluating the fit of N95 FFRs. The StAH was developed based on the anthropometric dimensions of a digital headform reported by the National Institute for Occupational Safety and Health (NIOSH) and has a silicone polymer skin with defined local tissue thicknesses. Quantitative fit factor evaluations were performed on seven N95 FFR models of various sizes and designs. Donnings were performed with and without a pre-test leak checking method. For each method, four replicate FFR samples of each of the seven models were tested with two donnings per replicate, resulting in a total of 56 tests per donning method. Each fit factor evaluation was comprised of three 86-sec exercises: “Normal Breathing” (NB, 11.2 liters per min (lpm)), “Deep Breathing” (DB, 20.4 lpm), then NB again. A fit factor for each exercise and an overall test fit factor were obtained. Analysis of variance methods were used to identify statistical differences among fit factors (analyzed as logarithms) for different FFR models, exercises, and testing methods. For each FFR model and for each testing method, the NB and DB fit factor data were not significantly different (P> 0.05). Significant differences were seen in the overall exercise fit factor data for the two donning methods among all FFR models (pooled data) and in the overall exercise fit factor data for the two testing methods within certain models. Utilization of the leak checking method improved the rate of obtaining overall exercise fit factors ≥100. The FFR models, which are expected to achieve overall fit factors ≥ 100 on human subjects, achieved overall exercise fit factors ≥ 100 on the StAH. Further research is needed to evaluate the correlation of FFRs fitted on the StAH to FFRs fitted on people. [Supplementary materials are available for this article. Go to the publisher's online edition ofJournal of Occupational and Environmental Hygienefor the following free supplemental resource: a file providing detailed information on the advanced head form design and fabrication process.] [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Occupational & Environmental Hygiene is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Quality control -- Equipment & supplies KW - Breathing apparatus -- Evaluation KW - Analysis of variance KW - Head KW - Human anatomical models (Objects) KW - New product development KW - Research -- Finance KW - Quantitative research KW - Data analysis -- Software KW - Florida KW - advanced headform KW - fit-test KW - headform KW - N95 KW - N95 respirator N1 - Accession Number: 93351068; Bergman, Michael S. 1; Zhuang, Ziqing 1; Email Address: zaz3@cdc.gov; Hanson, David 2; Heimbuch, Brian K. 3; McDonald, Michael J. 3; Palmiero, Andrew J. 1; Shaffer, Ronald E. 1; Harnish, Delbert 3; Husband, Michael 4; Wander, Joseph D. 5; Affiliations: 1: National Personal Protective Technology Laboratory, National Institute for Occupational Safety and Health, Pittsburgh, Pennsylvania; 2: Hanson Robotics, Inc., Plano, Texas; 3: Applied Research Associates, Inc., Panama City, Florida; 4: Office of Assistant Secretary for Preparedness and Response, Biomedical Advanced Research and Development Authority, U.S. Department of Health and Human Services, Washington, D.C.; 5: Air Force Research Laboratory, Tyndall Air Force Base, Florida; Issue Info: Feb2014, Vol. 11 Issue 2, p117; Subject Term: Quality control -- Equipment & supplies; Subject Term: Breathing apparatus -- Evaluation; Subject Term: Analysis of variance; Subject Term: Head; Subject Term: Human anatomical models (Objects); Subject Term: New product development; Subject Term: Research -- Finance; Subject Term: Quantitative research; Subject Term: Data analysis -- Software; Subject: Florida; Author-Supplied Keyword: advanced headform; Author-Supplied Keyword: fit-test; Author-Supplied Keyword: headform; Author-Supplied Keyword: N95; Author-Supplied Keyword: N95 respirator; NAICS/Industry Codes: 541613 Marketing Consulting Services; Number of Pages: 9p; Document Type: Article L3 - 10.1080/15459624.2013.816434 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=93351068&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 104126783 T1 - Development of an Advanced Respirator Fit-Test Headform. AU - Bergman, Michael S. AU - Zhuang, Ziqing AU - Hanson, David AU - Heimbuch, Brian K. AU - McDonald, Michael J. AU - Palmiero, Andrew J. AU - Shaffer, Ronald E. AU - Harnish, Delbert AU - Husband, Michael AU - Wander, Joseph D. Y1 - 2014/02// N1 - Accession Number: 104126783. Language: English. Entry Date: 20131231. Revision Date: 20150727. Publication Type: Journal Article; pictorial; research; tables/charts. Journal Subset: Biomedical; Double Blind Peer Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Occupational Therapy. Grant Information: U.S.Department of Health and Human Services, the Office of Assistant Secretary for Preparedness and Response (ASPR), Biomedical Advanced Research and Development Authority (BARDA) through an interagency agreement with the Air Force Research Laboratory (AFRL).. NLM UID: 101189458. KW - Respiratory Protective Devices -- Evaluation KW - Quality Control (Technology) -- Equipment and Supplies KW - Product Development KW - Human KW - Florida KW - Head KW - Models, Anatomic KW - Quantitative Studies KW - Analysis of Variance KW - Data Analysis Software KW - Funding Source SP - 117 EP - 125 JO - Journal of Occupational & Environmental Hygiene JF - Journal of Occupational & Environmental Hygiene JA - J OCCUP ENVIRON HYG VL - 11 IS - 2 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - Improved respirator test headforms are needed to measure the fit of N95 filtering facepiece respirators (FFRs) for protection studies against viable airborne particles. A Static (i.e., non-moving, non-speaking) Advanced Headform (StAH) was developed for evaluating the fit of N95 FFRs. The StAH was developed based on the anthropometric dimensions of a digital headform reported by the National Institute for Occupational Safety and Health (NIOSH) and has a silicone polymer skin with defined local tissue thicknesses. Quantitative fit factor evaluations were performed on seven N95 FFR models of various sizes and designs. Donnings were performed with and without a pre-test leak checking method. For each method, four replicate FFR samples of each of the seven models were tested with two donnings per replicate, resulting in a total of 56 tests per donning method. Each fit factor evaluation was comprised of three 86-sec exercises: “Normal Breathing” (NB, 11.2 liters per min (lpm)), “Deep Breathing” (DB, 20.4 lpm), then NB again. A fit factor for each exercise and an overall test fit factor were obtained. Analysis of variance methods were used to identify statistical differences among fit factors (analyzed as logarithms) for different FFR models, exercises, and testing methods. For each FFR model and for each testing method, the NB and DB fit factor data were not significantly different (P> 0.05). Significant differences were seen in the overall exercise fit factor data for the two donning methods among all FFR models (pooled data) and in the overall exercise fit factor data for the two testing methods within certain models. Utilization of the leak checking method improved the rate of obtaining overall exercise fit factors ≥100. The FFR models, which are expected to achieve overall fit factors ≥ 100 on human subjects, achieved overall exercise fit factors ≥ 100 on the StAH. Further research is needed to evaluate the correlation of FFRs fitted on the StAH to FFRs fitted on people. [Supplementary materials are available for this article. Go to the publisher's online edition ofJournal of Occupational and Environmental Hygienefor the following free supplemental resource: a file providing detailed information on the advanced head form design and fabrication process.] SN - 1545-9624 AD - National Personal Protective Technology Laboratory, National Institute for Occupational Safety and Health, Pittsburgh, Pennsylvania AD - Hanson Robotics, Inc., Plano, Texas AD - Applied Research Associates, Inc., Panama City, Florida AD - Office of Assistant Secretary for Preparedness and Response, Biomedical Advanced Research and Development Authority, U.S. Department of Health and Human Services, Washington, D.C. AD - Air Force Research Laboratory, Tyndall Air Force Base, Florida U2 - PMID: 24369934. DO - 10.1080/15459624.2013.816434 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104126783&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 107881971 T1 - Estimating patient dose from x-ray tube output metrics: automated measurement of patient size from CT images enables large-scale size-specific dose estimates. AU - Ikuta, Ichiro AU - Warden, Graham I AU - Andriole, Katherine P AU - Khorasani, Ramin AU - Sodickson, Aaron Y1 - 2014/02//2014 Feb N1 - Accession Number: 107881971. Language: English. Entry Date: 20140411. Revision Date: 20161117. Publication Type: journal article. Journal Subset: Biomedical; USA. Special Interest: Diagnostic Imaging. Grant Information: R01LM010679/LM/NLM NIH HHS/United States. NLM UID: 0401260. KW - Radiation Dosage KW - Tomography, X-Ray Computed -- Methods KW - Adult KW - Body Size KW - Female KW - Male KW - Radiography, Abdominal KW - Radiography, Thoracic KW - X-Rays SP - 472 EP - 480 JO - Radiology JF - Radiology JA - RADIOLOGY VL - 270 IS - 2 CY - Oak Brook, Illinois PB - Radiological Society of North America AB - Purpose: To test the hypothesis that patient size can be accurately calculated from axial computed tomographic (CT) images, including correction for the effects of anatomy truncation that occur in routine clinical CT image reconstruction.Materials and Methods: Institutional review board approval was obtained for this HIPAA-compliant study, with waiver of informed consent. Water-equivalent diameter (D(W)) was computed from the attenuation-area product of each image within 50 adult CT scans of the thorax and of the abdomen and pelvis and was also measured for maximal field of view (FOV) reconstructions. Linear regression models were created to compare D(W) with the effective diameter (D(eff)) used to select size-specific volume CT dose index (CTDI(vol)) conversion factors as defined in report 204 of the American Association of Physicists in Medicine. Linear regression models relating reductions in measured D(W) to a metric of anatomy truncation were used to compensate for the effects of clinical image truncation.Results: In the thorax, D(W)versus D(eff) had an R(2) of 0.51 (n = 200, 50 patients at four anatomic locations); in the abdomen and pelvis, R(2) was 0.90 (n = 150, 50 patients at three anatomic locations). By correcting for image truncation, the proportion of clinically reconstructed images with an extracted D(W) within ±5% of the maximal FOV D(W) increased from 54% to 90% in the thorax (n = 3602 images) and from 95% to 100% in the abdomen and pelvis (6181 images).Conclusion: The D(W) extracted from axial CT images is a reliable measure of patient size, and varying degrees of clinical image truncation can be readily corrected. Automated measurement of patient size combined with CT radiation exposure metrics may enable patient-specific dose estimation on a large scale. SN - 0033-8419 AD - From the Department of Radiology and Center for Evidence Based Imaging, Brigham and Women's Hospital, 75 Francis St, Boston, MA 02115 (I.I., G.I.W., K.P.A., R.K., A.S.); Harvard Medical School, Boston, Mass (I.I., G.I.W., K.P.A., R.K., A.S.); Department of Radiology, Norwalk Hospital, Norwalk, Conn (I.I.); and United States Air Force, Washington, DC (G.I.W.). U2 - PMID: 24086075. DO - 10.1148/radiol.13122727 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107881971&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Jones-Farmer, L. Allison AU - Ezell, Jeremy D. AU - Hazen, Benjamin T. T1 - Applying Control Chart Methods to Enhance Data Quality. JO - Technometrics JF - Technometrics Y1 - 2014/02// VL - 56 IS - 1 M3 - Article SP - 29 EP - 41 SN - 00401706 AB - As the volume and variety of available data continue to proliferate, organizations increasingly turn to analytics in order to enhance business decision-making and ultimately, performance. However, the decisions made as a result of the analytics process are only as good as the data on which they are based. In this article, we examine the data quality problem and propose the use of control charting methods as viable tools for data quality monitoring and improvement. We motivate our discussion using an integrated case study example of a real aircraft maintenance database. We include discussions of the measures of multiple data quality dimensions in this online process. We highlight the lack of appropriate statistical methods for the analysis of this type of problem and suggest opportunities for research in control chart methods within the data quality environment. This article has supplementary material online. [ABSTRACT FROM AUTHOR] AB - Copyright of Technometrics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOFTWARE analytics KW - DECISION making in business KW - DATA acquisition systems KW - PROCESS control -- Statistical methods KW - DATABASES KW - DATA extraction KW - Attributes control chart KW - Data analytics KW - Data production process KW - Process improvement KW - Quality management N1 - Accession Number: 94574064; Jones-Farmer, L. Allison 1; Email Address: jde009@auburn.edu; Ezell, Jeremy D. 1; Hazen, Benjamin T. 2; Email Address: benjamin.hazen@us.af.mil; Affiliations: 1: Department of Aviation and Supply Chain Management, Auburn University, Auburn, AL, 36849; 2: 916th Maintenance Squadron, United States Air Force Seymour Johnson Air Force Base, NC, 27531; Issue Info: Feb2014, Vol. 56 Issue 1, p29; Thesaurus Term: SOFTWARE analytics; Thesaurus Term: DECISION making in business; Thesaurus Term: DATA acquisition systems; Thesaurus Term: PROCESS control -- Statistical methods; Thesaurus Term: DATABASES; Subject Term: DATA extraction; Author-Supplied Keyword: Attributes control chart; Author-Supplied Keyword: Data analytics; Author-Supplied Keyword: Data production process; Author-Supplied Keyword: Process improvement; Author-Supplied Keyword: Quality management; Number of Pages: 13p; Document Type: Article L3 - 10.1080/00401706.2013.804437 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=94574064&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 2014-05728-008 AN - 2014-05728-008 AU - Whitehead, Casserly R. AU - Webb, Timothy S. AU - Wells, Timothy S. AU - Hunter, Kari L. T1 - Airmen with mild traumatic brain injury (mTBI) at increased risk for subsequent mishaps. JF - Journal of Safety Research JO - Journal of Safety Research JA - J Safety Res Y1 - 2014/02// VL - 48 SP - 43 EP - 47 CY - Netherlands PB - Elsevier Science SN - 0022-4375 AD - Whitehead, Casserly R., Infoscitex Corporation, 4027 Colonel Glenn Highway, Suite 210, Dayton, OH, US, 45431 N1 - Accession Number: 2014-05728-008. PMID: 24529090 Partial author list: First Author & Affiliation: Whitehead, Casserly R.; Infoscitex Corporation, Dayton, OH, US. Release Date: 20140224. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Military Duty Status; Risk Factors; Traumatic Brain Injury. Classification: Neurological Disorders & Brain Damage (3297); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 5. Issue Publication Date: Feb, 2014. Publication History: First Posted Date: Dec 7, 2013; Accepted Date: Nov 26, 2013; Revised Date: Oct 3, 2013; First Submitted Date: Jun 3, 2013. Copyright Statement: All rights reserved. National Safety Council and Elsevier Ltd. 2013. AB - Background: Little is known regarding long-term performance decrements associated with mild Traumatic Brain Injury (mTBI). The goal of this study was to determine if individuals with an mTBI may be at increased risk for subsequent mishaps. Methods: Cox proportional hazards modeling was utilized to calculate hazard ratios for 518,958 active duty U.S. Air Force service members (Airmen) while controlling for varying lengths of followup and potentially confounding variables. Two non-mTBI comparison groups were used; the second being a subset of the original, both without head injuries two years prior to study entrance. Results: Hazard ratios indicate that the causes of increased risk associated with mTBI do not resolve quickly. Additionally, outpatient mTBI injuries do not differ from other outpatient bodily injuries in terms of subsequent injury risk. Conclusions: These findings suggest that increased risk for subsequent mishaps are likely due to differences shared among individuals with any type of injury, including risk-taking behaviors, occupations, and differential participation in sports activities. Therefore, individuals who sustain an mTBI or injury have a long-term risk of additional mishaps. Practical applications: Differences shared among those who seek medical care for injuries may include risk-taking behaviors (Cherpitel, 1999; Turner & McClure, 2004; Turner, McClure, & Pirozzo, 2004), occupations, and differential participation in sports activities, among others. Individuals with an mTBI should be educated that they are at risk for subsequent injury. Historical data supported no lingering effects of mTBI, but more recent data suggest longer lasting effects. This study further adds that one of the longer term sequelae of mTBI may be an increased risk for subsequent mishap. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - airmen KW - mild traumatic brain injury KW - risk factors KW - subsequent mishaps KW - 2014 KW - Air Force Personnel KW - Military Duty Status KW - Risk Factors KW - Traumatic Brain Injury KW - 2014 U1 - Sponsor: Defense Center of Excellence for Psychological Health and Traumatic Brain Injury. Recipients: No recipient indicated DO - 10.1016/j.jsr.2013.11.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-05728-008&site=ehost-live&scope=site UR - Kari.Hunter@Kirtland.AF.MIL UR - tmlbwells@wowway.com UR - Timothy.Webb@WPAFB.AF.MIL UR - Casserly.Whitehead.ctr@WPAFB.AF.MIL DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-28189-001 AN - 2013-28189-001 AU - Ilin, Roman AU - Zhang, Jun AU - Perlovsky, Leonid AU - Kozma, Robert T1 - Vague-to-crisp dynamics of percept formation modeled as operant (selectionist) process. JF - Cognitive Neurodynamics JO - Cognitive Neurodynamics JA - Cogn Neurodyn Y1 - 2014/02// VL - 8 IS - 1 SP - 71 EP - 80 CY - Germany PB - Springer SN - 1871-4080 SN - 1871-4099 AD - Zhang, Jun, Department of Psychology, University of Michigan, 530 Church Street, Ann Arbor, MI, US N1 - Accession Number: 2013-28189-001. PMID: 24465287 Partial author list: First Author & Affiliation: Ilin, Roman; Air Force Research Laboratory, WPAFB, OH, US. Release Date: 20130812. Correction Date: 20140407. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Processes; Mathematical Modeling; Operant Conditioning; Stochastic Modeling. Classification: Statistics & Mathematics (2240); Cognitive Processes (2340). Population: Human (10). Methodology: Mathematical Model; Scientific Simulation. References Available: Y. Page Count: 10. Issue Publication Date: Feb, 2014. Publication History: First Posted Date: Aug 4, 2013; Accepted Date: Jun 26, 2013; First Submitted Date: Oct 15, 2012. Copyright Statement: Springer Science+Business Media Dordrecht. 2013. AB - We model the vague-to-crisp dynamics of forming percepts in the brain by combining two methodologies: dynamic logic (DL) and operant learning process. Forming percepts upon the presentation of visual inputs is likened to model selection based on sampled evidence. Our framework utilizes the DL in selecting the correct 'percept' among competing ones, but uses an intrinsic reward mechanism to allow stochastic online update in lieu of performing the optimization step of the DL framework. We discuss the connection of our framework with cognitive processing and the intentional neurodynamic cycle. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - percept formation KW - operant process KW - operant learning KW - mathematical modeling KW - mixture models KW - stochastic online update KW - 2014 KW - Cognitive Processes KW - Mathematical Modeling KW - Operant Conditioning KW - Stochastic Modeling KW - 2014 U1 - Sponsor: United Stated Air Force Office of Scientific Research, Department of the Air Force, US. Grant: 11RY06COR. Recipients: No recipient indicated DO - 10.1007/s11571-013-9262-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-28189-001&site=ehost-live&scope=site UR - rkozma@memphis.edu UR - leonid.perlovsky@wpafb.af.mil UR - junz@umich.edu UR - roman.ilin@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-19661-001 AN - 2013-19661-001 AU - Strang, Adam J. AU - Funke, Gregory J. AU - Russell, Sheldon M. AU - Dukes, Allen W. AU - Middendorf, Matthew S. T1 - Physio-behavioral coupling in a cooperative team task: Contributors and relations. JF - Journal of Experimental Psychology: Human Perception and Performance JO - Journal of Experimental Psychology: Human Perception and Performance JA - J Exp Psychol Hum Percept Perform Y1 - 2014/02// VL - 40 IS - 1 SP - 145 EP - 158 CY - US PB - American Psychological Association SN - 0096-1523 SN - 1939-1277 AD - Strang, Adam J., 2510 Fifth St., Area B, Bldg. 840, E200.14, Wright-Patterson AFB, OH, US, 45433 N1 - Accession Number: 2013-19661-001. PMID: 23750969 Partial author list: First Author & Affiliation: Strang, Adam J.; Consortium Research Fellows Program, Alexandria, VA, US. Release Date: 20130610. Correction Date: 20140127. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Behavior; Cooperation; Interpersonal Interaction; Physiology; Teams. Classification: Group & Interpersonal Processes (3020). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 14. Issue Publication Date: Feb, 2014. Publication History: First Posted Date: Jun 10, 2013; Accepted Date: Apr 25, 2013; Revised Date: Mar 27, 2013; First Submitted Date: Oct 4, 2012. Copyright Statement: In the public domain. 2013. AB - Research indicates that coactors performing cooperative tasks often exhibit spontaneous and unintended similarities in their physiological and behavioral responses—a phenomenon referred to here as physio-behavioral coupling (PBC). The purpose of this research was to identify contributors to PBC; examine relationships between PBC, team performance, and perceived team attributes (e.g., cohesion, trust); and compare a set of time-series measures(cross-correlation [CC], cross-recurrence quantification analysis [CRQA], and cross-fuzzy entropy [CFEn]) in their characterization of PBC across comparisons. To accomplish this, PBC was examined in human postural sway (PS) and cardiac interbeat intervals (IBIs) from dyadic teams performing a fast-paced puzzle task (Quadra—a variant of the video game Tetris). Results indicated that observed levels of PBC were not a chance occurrence, but instead driven by features of the team-task environment, and that PBC was likely influenced by similar individual task demands and interpersonal coordination dynamics that were not 'unique' to a particular team. Correlation analysis revealed that PBC exhibited negative relationships with team performance and team attributes, which were interpreted to reflect complementary coordination (as opposed to mimicry) during task performance, potentially due to differentiated team roles. Finally, qualitative comparison of time-series measures used to characterize PBC indicated that CRQA percent recurrence and CFEn (both nonlinear measures) settled on mostly analogous characterizations, whereas linear CC did not. The disparity observed between the linear and nonlinear measures highlights underlying computational and interpretational differences between the two families of statistics and supports the use of multiple metrics for characterizing PBC. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cooperative KW - coordination KW - coupling KW - interpersonal KW - team KW - physio-behavioral coupling KW - 2014 KW - Behavior KW - Cooperation KW - Interpersonal Interaction KW - Physiology KW - Teams KW - 2014 U1 - Sponsor: Air Force Office of Scientific Research (AFOSR). Recipients: No recipient indicated DO - 10.1037/a0033125 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-19661-001&site=ehost-live&scope=site UR - adam.strang.ctr@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Kehimkar, Benjamin AU - Hoggard, Jamin C. AU - Marney, Luke C. AU - Billingsley, Matthew C. AU - Fraga, Carlos G. AU - Bruno, Thomas J. AU - Synovec, Robert E. T1 - Correlation of rocket propulsion fuel properties with chemical composition using comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry followed by partial least squares regression analysis. JO - Journal of Chromatography A JF - Journal of Chromatography A Y1 - 2014/01/31/ VL - 1327 M3 - Article SP - 132 EP - 140 SN - 00219673 AB - Highlights: [•] A ‘reversed column’ GC×GC format was used to separate ten RP-1 fuels. [•] Partial least squares (PLS) analysis was used to analyze the GC×GC–TOFMS data. [•] Replicate data sets were separately analyzed using leave-one-out cross validation. [•] Connections between fuel composition and physical properties were investigated. [•] Compounds that appeared most influential for physical properties were identified. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chromatography A is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Fuel KW - Gas chromatography/Mass spectrometry (GC-MS) KW - Airplanes -- Rocket engines KW - Two-dimensional models KW - Time-of-flight mass spectrometry KW - Least squares KW - Regression analysis KW - Chemometrics KW - Gas chromatography KW - GC×GC–TOFMS KW - Kerosene KW - PLS KW - RP-1 N1 - Accession Number: 94051108; Kehimkar, Benjamin 1; Hoggard, Jamin C. 1; Marney, Luke C. 1; Billingsley, Matthew C. 2; Fraga, Carlos G. 3; Bruno, Thomas J. 4; Synovec, Robert E. 1; Email Address: synovec@chem.washington.edu; Affiliations: 1: Department of Chemistry, Box 351700, University of Washington, Seattle, WA 98195, USA; 2: Air Force Research Laboratory/RQRC, 10 E Saturn Boulevard, Edwards AFB, CA 93524, USA; 3: Pacific Northwest National Laboratory, PO Box 999, MS P7-50, Richland, WA 99352, USA; 4: Applied Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, CO 80305, USA; Issue Info: Jan2014, Vol. 1327, p132; Thesaurus Term: Fuel; Thesaurus Term: Gas chromatography/Mass spectrometry (GC-MS); Subject Term: Airplanes -- Rocket engines; Subject Term: Two-dimensional models; Subject Term: Time-of-flight mass spectrometry; Subject Term: Least squares; Subject Term: Regression analysis; Author-Supplied Keyword: Chemometrics; Author-Supplied Keyword: Gas chromatography; Author-Supplied Keyword: GC×GC–TOFMS; Author-Supplied Keyword: Kerosene; Author-Supplied Keyword: PLS; Author-Supplied Keyword: RP-1; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 454319 Other fuel dealers; NAICS/Industry Codes: 454310 Fuel Dealers; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.chroma.2013.12.060 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=94051108&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2013-01491-001 AN - 2013-01491-001 AU - Nelson, Jeremy T. AU - McKinley, R. Andy AU - Golob, Edward J. AU - Warm, Joel S. AU - Parasuraman, Raja T1 - Enhancing vigilance in operators with prefrontal cortex transcranial direct current stimulation (tDCS). JF - NeuroImage JO - NeuroImage JA - Neuroimage Y1 - 2014/01/15/ VL - 85 IS - Part 3 SP - 909 EP - 917 CY - Netherlands PB - Elsevier Science SN - 1053-8119 SN - 1095-9572 AD - McKinley, R. Andy, Air Force Research Laboratory, 2510 Fifth Street, Bldg. 840, Wright-Patterson AFB, OH, US, 45433-7951 N1 - Accession Number: 2013-01491-001. Partial author list: First Author & Affiliation: Nelson, Jeremy T.; Neuroscience Program, Tulane University, New Orleans, LA, US. Release Date: 20130121. Correction Date: 20140428. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Attention; Prefrontal Cortex; Transcranial Magnetic Stimulation; Vigilance. Minor Descriptor: Mental Disorders. Classification: Physiological Psychology & Neuroscience (2500). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Vigilance Task; Mood Questionnaire. Methodology: Brain Imaging; Empirical Study; Quantitative Study. References Available: Y. Page Count: 9. Issue Publication Date: Jan 15, 2014. Publication History: First Posted Date: Dec 9, 2012; Accepted Date: Nov 28, 2012. AB - Sustained attention, often referred to as vigilance in humans, is the ability to maintain goal-directed behavior for extended periods of time and respond to intermittent targets in the environment. With greater time-on-task the ability to detect targets decreases and reaction time increases—a phenomenon termed the vigilance decrement. The purpose of this study was to examine the role of dorsolateral prefrontal cortex in the vigilance decrement. Subjects (n = 19) received prefrontal transcranial direct current stimulation (tDCS) at one of two different time points during a vigilance task (early or late). The impact of tDCS was examined using measures of behavior, hemispheric blood flow velocity, and regional blood oxygenation relative to sham stimulation. In the sham condition greater time-on-task was accompanied by fewer target detections and slower reaction times, indicating a vigilance decrement, and decreased blood flow velocity. tDCS significantly altered baseline task-induced physiologic and behavioral changes, dependent on the time of stimulation administration and electrode configuration (determining polarity of stimulation). Compared to the sham condition, with more time-on-task blood flow velocity decreased less and cerebral oxygenation increased more in the tDCS condition. Behavioral measures showed a significant improvement in target detection performance with tDCS compared to the sham stimulation. Signal detection analysis revealed a significant change in operator discriminability and response bias with increased time-on-task, as well as interactions between time of stimulation administration and electrode configuration. Current density modeling of tDCS showed high densities in the medial prefrontal cortex and anterior cingulate cortex. These findings confirm that cerebral hemodynamic measures provide an index of resource utilization and point to the central role of the frontal cortex in vigilance. Further, they suggest that modulation of the frontal cortices—and connected structures—influences the availability of vigilance resources. These findings indicate that tDCS may be well-suited to mitigate performance degradation in work settings requiring sustained attention or as a possible treatment for neurological or psychiatric disorders involving sustained attention. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - vigilance KW - prefrontal cortex KW - transcranial direct current stimulation KW - attention KW - psychiatric disorders KW - cingulate cortex KW - 2014 KW - Attention KW - Prefrontal Cortex KW - Transcranial Magnetic Stimulation KW - Vigilance KW - Mental Disorders KW - 2014 U1 - Sponsor: City College of New York of CUNY, Neural Engineering Lab, US. Recipients: No recipient indicated DO - 10.1016/j.neuroimage.2012.11.061 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-01491-001&site=ehost-live&scope=site UR - andy.mckinley@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Welsh III, General Mark A. AU - Carlisle, General Hawk T1 - Strengthening Understanding and Engagement with China's Air Force. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2014/01//Jan/Feb2014 Y1 - 2014/01//Jan/Feb2014 VL - 28 IS - 1 M3 - Opinion SP - 4 EP - 10 PB - Superintendent of Documents SN - 1555385X AB - The authors offer their views on the visit of the U.S. Air Force to China on September 24-30, 2013 aimed to improve understanding between two armed forces and to reduce military-to-military friction. They agree with the general opinion that constructive relationship between the U.S. and China is important to the continued stability and prosperity of the Asia-Pacific and the world. They believe on the need for the exchange of airpower concepts between the two air forces. KW - CHINA -- Military relations KW - UNITED States -- Military relations KW - UNITED States. Air Force KW - FRICTION (Military science) KW - AIR power (Military science) KW - CHINA. Kong jun N1 - Accession Number: 93664164; Source Information: Jan/Feb2014, Vol. 28 Issue 1, p4; Subject Term: CHINA -- Military relations; Subject Term: UNITED States -- Military relations; Subject Term: UNITED States. Air Force; Subject Term: FRICTION (Military science); Subject Term: AIR power (Military science); Subject Term: CHINA. Kong jun; Subject Term: ; Number of Pages: 7p; ; Document Type: Opinion; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=93664164&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - JOHNSON, ERIC M.1 T1 - EXAMINING BLASPHEMY: INTERNATIONAL LAW, NATIONAL SECURITY AND THE U.S. FOREIGN POLICY REGARDING FREE SPEECH. JO - Air Force Law Review JF - Air Force Law Review J1 - Air Force Law Review PY - 2014/01// Y1 - 2014/01// VL - 71 M3 - Article SP - 25 EP - 67 SN - 00948381 AB - The article focuses on the instability caused by blasphemy across the world and the U.S. foreign policy on the freedom of expression. Topics discussed include the freedom of expression in international law including the Universal Declaration of Human Rights and the International Covenant on Civil and Political Rights, the U.S foreign policy regarding free speech and comparison of the blasphemy and freedom of expression laws in the U.S, Tunisia, and Egypt. KW - Blasphemy -- Law & legislation KW - Freedom of speech -- International cooperation KW - Freedom of speech -- United States KW - National security -- United States KW - United Nations. General Assembly. Universal Declaration of Human Rights KW - International Covenant on Civil & Political Rights (1966) N1 - Accession Number: 98679436; Authors:JOHNSON, ERIC M. 1; Affiliations: 1: Judge Advocate, United States Air Force; Subject: Blasphemy -- Law & legislation; Subject: Freedom of speech -- International cooperation; Subject: Freedom of speech -- United States; Subject: National security -- United States; Subject: United Nations. General Assembly. Universal Declaration of Human Rights; Subject: International Covenant on Civil & Political Rights (1966); Number of Pages: 43p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=98679436&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR AU - AUGUSTINE, ZACHARY P.1 T1 - CYBER NEUTRALITY: A TEXTUAL ANALYSIS OF TRADITIONAL JUS IN BELLO NEUTRALITY RULES THROUGH A PURPOSEBASED LENS. JO - Air Force Law Review JF - Air Force Law Review J1 - Air Force Law Review PY - 2014/01// Y1 - 2014/01// VL - 71 M3 - Article SP - 69 EP - 106 SN - 00948381 AB - The article focuses on the importance of neutrality rules in cyberspace, and its application to a belligerent's cyber operations. Topics discussed include the Hague Conventions of 1899 and 1907, the international standards of attribution and the challenges in application of neutrality rules to cyber activities, and the neutrality consequences of malicious cyber activities. It mentions the neutrality rules that limits misleading cyber practices in an armed conflict and the belligerency concept. KW - Armed neutrality KW - Computer fraud -- Law & legislation KW - Unlawful combatants KW - Belligerency KW - International Peace Conference (1st: 1899: Hague, Netherlands) KW - International Peace Conference (2nd : 1907 : Hague, Netherlands) N1 - Accession Number: 98679437; Authors:AUGUSTINE, ZACHARY P. 1; Affiliations: 1: Judge Advocate, United States Air Force; Subject: Armed neutrality; Subject: Computer fraud -- Law & legislation; Subject: Unlawful combatants; Subject: International Peace Conference (1st: 1899: Hague, Netherlands); Subject: International Peace Conference (2nd : 1907 : Hague, Netherlands); Subject: Belligerency; Number of Pages: 38p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=98679437&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR AU - Beyersdorf, A. J. AU - Timko, M. T. AU - Ziemba, L. D. AU - Bulzan, D. AU - Corporan, E. AU - Herndon, S. C. AU - Howard, R. AU - Miake-Lye, R. AU - Thornhill, K. L. AU - Winstead, E. AU - Wey, C. AU - Z. Yu AU - Anderson, B. E. T1 - Reductions in aircraft particulate emissions due to the use of Fischer-Tropsch fuels. JO - Atmospheric Chemistry & Physics JF - Atmospheric Chemistry & Physics Y1 - 2014/01// VL - 14 IS - 1 M3 - Article SP - 11 EP - 23 PB - Copernicus Gesellschaft mbH SN - 16807316 AB - The use of alternative fuels for aviation is likely to increase due to concerns over fuel security, price stability, and the sustainability of fuel sources. Concurrent reductions in particulate emissions from these alternative fuels are expected because of changes in fuel composition including reduced sulfur and aromatic content. The NASA Alternative Aviation Fuel Experiment (AAFEX) was conducted in January-February 2009 to investigate the effects of synthetic fuels on gas-phase and particulate emissions. Standard petroleum JP-8 fuel, pure synthetic fuels produced from natural gas and coal feedstocks using the Fischer-Tropsch (FT) process, and 50% blends of both fuels were tested in the CFM-56 engines on a DC-8 aircraft. To examine plume chemistry and particle evolution with time, samples were drawn from inlet probes positioned 1, 30, and 145m downstream of the aircraft engines. No significant alteration to engine performance was measured when burning the alternative fuels. However, leaks in the aircraft fuel system were detected when operated with the pure FT fuels as a result of the absence of aromatic compounds in the fuel. Dramatic reductions in soot emissions were measured for both the pure FT fuels (reductions in mass of 86% averaged over all powers) and blended fuels (66 %) relative to the JP- 8 baseline with the largest reductions at idle conditions. At 7% power, this corresponds to a reduction from 7.6 mg kg-1 for JP-8 to 1.2 mg kg-1 for the natural gas FT fuel. At full To study the formation of volatile aerosols (defined as any aerosol formed as the plume ages) in more detail, tests were performed at varying ambient temperatures (-4 to 20 °C). At idle, particle number and volume emissions were reduced linearly with increasing ambient temperature, with best fit slopes corresponding to -8×1014 particles (kg fuel)-1 °C-1 for particle number emissions and -10mm3 (kg fuel)-1 °C-1 for particle volume emissions. The temperature dependency of aerosol formation can have large effects on local air quality surrounding airports in cold regions. Aircraft-produced aerosols in these regions will be much larger than levels expected based solely on measurements made directly at the engine exit plane. The majority (90% at idle) of the volatile aerosol mass formed as nucleation-mode aerosols, with a smaller fraction as a soot coating. Conversion efficiencies of up to 2.8% were measured for the partitioning of gas-phase precursors (unburned hydrocarbons and SO2) to form volatile aerosols. Highest conversion efficiencies were measured at 45% power. [ABSTRACT FROM AUTHOR] AB - Copyright of Atmospheric Chemistry & Physics is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - FUEL KW - Air quality management KW - Fischer-Tropsch process KW - Alternative fuels KW - Airplanes KW - ENVIRONMENTAL aspects KW - Aircraft exhaust emissions -- Environmental aspects KW - Emissions (Air pollution) -- Prevention N1 - Accession Number: 93739905; Beyersdorf, A. J. 1; Email Address: andreas.j.beyersdorf@nasa.gov; Timko, M. T. 2,3; Ziemba, L. D. 1; Bulzan, D. 4; Corporan, E. 5; Herndon, S. C. 2; Howard, R. 6; Miake-Lye, R. 2; Thornhill, K. L. 1,7; Winstead, E. 1,7; Wey, C. 4; Z. Yu 2; Anderson, B. E. 1; Affiliations: 1: NASA Langley Research Center, Hampton, Virginia, USA; 2: Aerodyne Research, Inc., Billerica, Massachusetts, USA; 3: Worcester Polytechnic Institute, Worcester, Massachusetts, USA; 4: NASA Glenn Research Center, Cleveland, Ohio, USA; 5: Air Force Research Laboratory, Wright Patterson AFB, Ohio, USA; 6: Arnold Engineering Development Center, Arnold AFB, Tennessee, USA; 7: Science Systems and Applications, Inc., Hampton, Virginia, USA; Issue Info: 2014, Vol. 14 Issue 1, p11; Thesaurus Term: RESEARCH; Thesaurus Term: FUEL; Thesaurus Term: Air quality management; Thesaurus Term: Fischer-Tropsch process; Subject Term: Alternative fuels; Subject Term: Airplanes; Subject Term: ENVIRONMENTAL aspects; Subject Term: Aircraft exhaust emissions -- Environmental aspects; Subject Term: Emissions (Air pollution) -- Prevention; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 454310 Fuel Dealers; NAICS/Industry Codes: 454319 Other fuel dealers; Number of Pages: 13p; Illustrations: 1 Diagram, 1 Chart, 12 Graphs; Document Type: Article L3 - 10.5194/acp-14-11-2014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=93739905&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - CHAP ID - 2013-32136-011 AN - 2013-32136-011 AU - Novack, Jerry AU - Edwards, Scott A. ED - Rochlen, Aaron B. ED - Rabinowitz, Fredric E. ED - Rochlen, Aaron B., (Ed) ED - Rabinowitz, Fredric E., (Ed) T1 - A holistic approach to counseling military men. T2 - Breaking barriers in counseling men: Insights and innovations. T3 - The Routledge series on counseling and psychotherapy with boys and men Y1 - 2014/// SP - 123 EP - 134 CY - New York, NY, US PB - Routledge/Taylor & Francis Group SN - 978-0-415-83934-1 SN - 978-0-415-53289-1 SN - 978-0-203-11463-6 AD - Novack, Jerry N1 - Accession Number: 2013-32136-011. Partial author list: First Author & Affiliation: Novack, Jerry; United States Air Force, Biomedical Science Corps, US. Release Date: 20140714. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-0-415-83934-1, Hardcover; 978-0-415-53289-1, Paperback; 978-0-203-11463-6, PDF. Language: English. Major Descriptor: Counseling; Holistic Health; Military Personnel; Posttraumatic Stress Disorder; Social Support. Classification: Military Psychology (3800). Population: Human (10); Male (30). Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 12. AB - In this chapter, we have shared our experiences using a strength-based approach that assumes military experiences always impact men, but it does not assume they necessarily impact men negatively. It is an approach that discards the notions that difficult experiences are equivalent to a posttraumatic stress disorder (PTSD) diagnosis; that all symptoms overlapping with PTSD must be treated with a trauma-focused approach, and that posttraumatic growth (PTG) is an exception. We have examined how issues of masculinity might influence counseling with military men and offered suggestions for treatment. The importance of individual identity factors, family, and social supports and possibilities for strengthening those supports were stressed. Finally, we have explored the value of both resilience and PTG in pre- and post-deployment therapy. It has been our experience that creative, strength-based approaches to individual and family therapy will help mliitary service men feel welcomed and comfortable Ui treatment and achieve wellness beyond what they might have imagined possible. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - holistic approach KW - counseling military men KW - strength-based approach KW - social supports KW - posttraumatic stress disorder KW - posttraumatic growth KW - 2014 KW - Counseling KW - Holistic Health KW - Military Personnel KW - Posttraumatic Stress Disorder KW - Social Support KW - 2014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-32136-011&site=ehost-live&scope=site UR - gerald.novack@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 104130432 T1 - An Integrated Review of Simulation Use in Aeromedical Evacuation Training. AU - O'Connell, Karen M. AU - De Jong, Marla J. AU - Dufour, Karey M. AU - Millwater, Teresa L. AU - Dukes, Susan F. AU - Winik, Connie L. Y1 - 2014/01// N1 - Accession Number: 104130432. Language: English. Entry Date: 20140110. Revision Date: 20150710. Publication Type: Journal Article; research; systematic review; tables/charts. Journal Subset: Core Nursing; Nursing; USA. Special Interest: Critical Care; Emergency Care; Evidence-Based Practice; Military/Uniformed Services; Nursing Education. NLM UID: 101486408. KW - Aeromedical Transport -- Education KW - Simulations KW - Human KW - Systematic Review KW - Military Medicine -- Education KW - Flight Nursing -- Education KW - PubMed KW - CINAHL Database KW - ERIC Database KW - Emergency Medicine -- Education KW - Education, Medical KW - Education, Nursing KW - Aviation -- Education KW - United States Coast Guard KW - United States Air Force KW - Military Personnel -- Education SP - e11 EP - 8 JO - Clinical Simulation in Nursing JF - Clinical Simulation in Nursing JA - CLIN SIMULATION NURS VL - 10 IS - 1 CY - New York, New York PB - Elsevier Science SN - 1876-1399 AD - Nursing Research, Wright-Patterson Medical Center, 4881 Sugar Maple Drive, Wright-Patterson AFB, OH 45433 USA AD - United States Air Force School of Aerospace Medicine, 2510 5th Street, Wright-Patterson AFB, OH 45433 USA AD - STARS-P Program, Wright-Patterson Medical Center, 4881 Sugar Maple Drive, Wright-Patterson AFB, OH 45433 USA AD - ICF International Technical Specialist WPAFB, AFMMAST Simulation Coordinator, Wright-Patterson Medical Center, 4881 Sugar Maple Drive, Wright-Patterson AFB, OH 45433 USA AD - Aeromedical Research Department, United States Air Force School of Aerospace Medicine, 2510 5th Street, Wright-Patterson AFB, OH 45433 USA AD - AFEMSI, Education Coordinator, United States Air Force School of Aerospace Medicine, 2510 5th Street, Wright-Patterson AFB, OH 45433 USA DO - 10.1016/j.ecns.2013.07.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104130432&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 107878643 T1 - Consortium for health and military performance and american college of sports medicine summit: utility of functional movement assessment in identifying musculoskeletal injury risk. AU - Teyhen, Deydre AU - Bergeron, Michael F AU - Deuster, Patricia AU - Baumgartner, Neal AU - Beutler, Anthony I AU - de la Motte, Sarah J AU - Jones, Bruce H AU - Lisman, Peter AU - Padua, Darin A AU - Pendergrass, Timothy L AU - Pyne, Scott W AU - Schoomaker, Eric AU - Sell, Timothy C AU - O'Connor, Francis Y1 - 2014/01//2014 Jan-Feb N1 - Accession Number: 107878643. Language: English. Entry Date: 20141003. Revision Date: 20150712. Publication Type: Journal Article. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Sports Medicine. NLM UID: 101134380. KW - Bone and Bones -- Injuries KW - Military Medicine -- Methods KW - Muscle, Skeletal -- Injuries KW - Occupational Diseases -- Diagnosis KW - Occupational Diseases -- Prevention and Control KW - Risk Assessment -- Methods KW - Sports Medicine -- Methods SP - 52 EP - 63 JO - Current Sports Medicine Reports (American College of Sports Medicine) JF - Current Sports Medicine Reports (American College of Sports Medicine) JA - CURR SPORTS MED REP VL - 13 IS - 1 CY - Indianapolis, Indiana PB - American College of Sports Medicine SN - 1537-890X AD - 1U.S. Army-Baylor University, Ft Sam Houston, TX; 2National Youth Sports Health and Safety Institute, Department of Pediatrics, Sanford USD School of Medicine, Sioux Falls, SD; 3Department of Military and Emergency Medicine, Consortium of Health and Military Performance, Uniformed Services University of the Health Sciences, Bethesda, MD; 4Headquarters Air Education and Training Command, Randolph Air Force Base, TX; 5Department of Family Medicine, Uniformed Services University, Bethesda, MD; 6Army Institute of Public Health, U.S. Army Public Health Command, Aberdeen Proving Grounds, MD; 7Department of Kinesiology, Towson University, Towson, MD; 8Department of Exercise and Sport Science, University of North Carolina, Chapel Hill, NC; 9Office of the Surgeon General, U.S. Army Medical Command, Falls Church, VA; 10Team Physician, United States Naval Academy, Annapolis, MD; 11Uniformed Services University of the Health Sciences, Bethesda, MD; and 12Department of Sports Medicine and Nutrition, School of H U2 - PMID: 24412892. DO - 10.1249/JSR.0000000000000023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107878643&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Consortium for Health and Military Performance and American College of Sports Medicine Summit: Utility of Functional Movement Assessment in Identifying Musculoskeletal Injury Risk. AU - Teyhen, Deydre AU - Bergeron, Michael F. AU - Deuster, Patricia AU - Baumgartner, Neal AU - Beutler, Anthony I. AU - de la Motte, Sarah J. AU - Jones, Bruce H. AU - Lisman, Peter AU - Padua, Darin A. AU - Pendergrass, Timothy L. AU - Pyne, Scott W. AU - Schoomaker, Eric AU - Sell, Timothy C. AU - O'Connor, Francis JO - Current Sports Medicine Reports (Lippincott Williams & Wilkins) JF - Current Sports Medicine Reports (Lippincott Williams & Wilkins) Y1 - 2014/01//Jan/Feb2014 VL - 13 IS - 1 SP - 52 EP - 63 SN - 1537890X N1 - Accession Number: 93917107; Author: Teyhen, Deydre: 1 email: deydre.s.teyhen.mil@mail.mil. Author: Bergeron, Michael F.: 2 Author: Deuster, Patricia: 3 Author: Baumgartner, Neal: 4 Author: Beutler, Anthony I.: 5 Author: de la Motte, Sarah J.: 5 Author: Jones, Bruce H.: 6 Author: Lisman, Peter: 5,7 Author: Padua, Darin A.: 8 Author: Pendergrass, Timothy L.: 9 Author: Pyne, Scott W.: 10 Author: Schoomaker, Eric: 11 Author: Sell, Timothy C.: 12 Author: O'Connor, Francis: 3 ; Author Affiliation: 1 U.S. Army-Baylor University, Ft Sam Houston, TX: 2 National Youth Sports Health and Safety Institute, Department of Pediatrics, Sanford USD School of Medicine, Sioux Falls, SD: 3 Department of Military and Emergency Medicine, Consortium of Health and Military Performance, Uniformed Services University of the Health Sciences, Bethesda, MD: 4 Headquarters Air Education and Training Command, Randolph Air Force Base, TX: 5 Department of Family Medicine, Uniformed Services University, Bethesda, MD: 6 Army Institute of Public Health, U.S. Army Public Health Command, Aberdeen Proving Grounds, MD: 7 Department of Kinesiology, Towson University, Towson, MD: 8 Department of Exercise and Sport Science, University of North Carolina, Chapel Hill, NC: 9 Office of the Surgeon General, U.S. Army Medical Command, Falls Church, VA: 10 Team Physician, United States Naval Academy, Annapolis, MD: 11 Uniformed Services University of the Health Sciences, Bethesda, MD: 12 Department of Sports Medicine and Nutrition, School of Health and Rehabilitation Sciences, University of Pittsburgh, Pittsburgh, PA; No. of Pages: 12; Language: English; Publication Type: Proceeding; Update Code: 20140124 N2 - The article presents the findings of a convention hosted by the Consortium for Health and Military Performance which was held at the Uniformed Services University in Bethesda, Maryland on September 10-11, 2012, aimed at developing a more unified approach for dealing with musculoskeletal injuries (MSKI). It details the results of the tasks assigned to the expert panel members from various research institutions and strategies for improving functional movement assessment and mitigating MSKI risk. KW - *HEALTH KW - *MUSCULOSKELETAL system -- Wounds & injuries KW - *MUSCLES KW - BETHESDA (Md.) KW - MARYLAND UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=93917107&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Davis, Kevin J. AU - Levy, David A. AU - Parco, James E. AD - US Air Force Academy, Colorado Springs AD - US Air Force Academy, Colorado Springs AD - CO College T1 - Leadership Development as Identity Change: An Analysis of the Impact of a Deliberate Leadership Development Program JO - European Journal of Management JF - European Journal of Management Y1 - 2014/// VL - 14 IS - 3 SP - 39 EP - 52 SN - 15554015 N1 - Accession Number: 1528689; Keywords: Skill; Women; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 201511 N2 - According to Ibarra, et al (2010) leadership development requires re-creation of identity. For this article we examined a leadership development program, searching for evidence that identity change had occurred. Specifically, we collected data at a military academy where leadership development was the focal point of the institution's mission. Using leadership behaviors and skills suggested by Yukl (2008) we were able to show how the perceived importance of these skills changed as students progressed through the program. We also found that the perceived importance of certain leadership skills depended on a student's "change readiness." Finally, we searched for evidence that women value relationship-oriented leadership skills more highly than men. KW - Higher Education; Research Institutions I23 KW - Economics of Gender; Non-labor Discrimination J16 KW - Human Capital; Skills; Occupational Choice; Labor Productivity J24 KW - Business Administration: General M10 L3 - http://www.iabe.org/domains/iabeX/journalinfo.aspx?JournalID=EJM UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1528689&site=ehost-live&scope=site UR - http://www.iabe.org/domains/iabeX/journalinfo.aspx?JournalID=EJM DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Kiefer, Kip AU - Miller, Justin I. T1 - DO SUPERORDINATE IDENTITIES ALTER ENTREPRENEURIAL OPPORTUNITY RECOGNITION. JO - Frontiers of Entrepreneurship Research JF - Frontiers of Entrepreneurship Research Y1 - 2014/01//2014/2015 VL - 34 IS - 1 M3 - Article SP - 1 EP - 1 PB - Babson College SN - 07407416 AB - The article focuses on a study related to effect of social identity of an individual on entrepreneurial opportunity recognition in entrepreneurs and non-entrepreneurs. KW - ENTREPRENEURSHIP KW - BUSINESSPEOPLE KW - GROUP identity N1 - Accession Number: 120089384; Kiefer, Kip 1; Email Address: kip.kiefer@usafa.edu; Miller, Justin I. 2; Affiliations: 1: United States Air Force Academy, USA; 2: The Ohio State University, USA; Issue Info: 2014/2015, Vol. 34 Issue 1, p1; Thesaurus Term: ENTREPRENEURSHIP; Thesaurus Term: BUSINESSPEOPLE; Subject Term: GROUP identity; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ent&AN=120089384&site=ehost-live&scope=site DP - EBSCOhost DB - ent ER - TY - JOUR AU - Cao, Siyang AU - Zheng, Yuan F. AU - Ewing, Robert L. T1 - Wavelet-Based Waveform for Effective Sidelobe Suppression in Radar Signal. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2014/01// VL - 50 IS - 1 M3 - Article SP - 265 EP - 284 SN - 00189251 AB - A new radar waveform based on wavelets is proposed. The waveform shows significant advantages over conventional linear frequency modulated (LFM) and Costas waveforms for effective sidelobe suppression. Another benefit comes from the wavelet packets, each of which occupies a subband in the frequency domain. Subband adaptation of the waveform in both magnitude and phase becomes flexible, responding to varying target and environmental conditions. The latter facilitates the development of powerful cognitive radars. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVE analysis KW - RADAR signal processing KW - WAVELET transforms KW - RADIO frequency modulation KW - DOPPLER effect KW - FILTER banks N1 - Accession Number: 95894585; Cao, Siyang 1; Zheng, Yuan F. 1; Ewing, Robert L. 2; Affiliations: 1: The Ohio State University, Columbus, OH 43210; 2: Air Force Research Laboratory, Dayton, OH 45433; Issue Info: Jan2014, Vol. 50 Issue 1, p265; Subject Term: WAVE analysis; Subject Term: RADAR signal processing; Subject Term: WAVELET transforms; Subject Term: RADIO frequency modulation; Subject Term: DOPPLER effect; Subject Term: FILTER banks; Number of Pages: 20p; Document Type: Article L3 - 10.1109/TAES.2013.120067 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=95894585&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Kang, Bosung AU - Monga, Vishal AU - Rangaswamy, Muralidhar T1 - Rank-Constrained Maximum Likelihood Estimation of Structured Covariance Matrices. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2014/01// VL - 50 IS - 1 M3 - Article SP - 501 EP - 515 SN - 00189251 AB - This paper develops and analyzes the performance of a structured covariance matrix estimate for the important practical problem of radar space-time adaptive processing in the face of severely limited training data. Traditional maximum likelihood (ML) estimators are effective when training data are abundant, but they lead to poor estimates, degraded false alarm rates, and detection loss in the realistic regime of limited training. The problem is exacerbated by recent advances, which have led to high-dimensionalof the observations arising from increased antenna elements, as well as higher temporal resolution (time epochs and finally=). This work addresses the problem by incorporating constraints in the ML estimation problem obtained from the geometry and physics of the airborne phased array radar scenario. In particular, we exploit the structure of the disturbance covariance and, importantly, knowledge of the clutter rank to derive a new rank-constrained maximum likelihood (RCML) estimator of clutter and disturbance covariance. We demonstrate that despite the presence of the challenging rank constraint, the estimation can be transformed to a convex problem and derive closed-form expressions for the estimated covariance matrix. Performance analysis using the knowledge-aided sensor signal processing and expert reasoning data set (where ground truth covariance is made available) shows that the proposed estimator outperforms state-of-the-art alternatives in the sense of a higher normalized signal-to-interference and noise ratio. Crucially, the RCML estimator excels for low training, including the notoriously difficult regime of K≤N training samples. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAXIMUM likelihood statistics KW - COVARIANCE matrices KW - RADAR signal processing KW - SPACE-time adaptive signal processing KW - ANTENNAS (Electronics) KW - SIGNAL-to-noise ratio N1 - Accession Number: 95894601; Kang, Bosung 1; Monga, Vishal 1; Rangaswamy, Muralidhar 2; Affiliations: 1: The Pennsylvania State University, University Park, PA 16802; 2: Air Force Research Laboratory, OH; Issue Info: Jan2014, Vol. 50 Issue 1, p501; Subject Term: MAXIMUM likelihood statistics; Subject Term: COVARIANCE matrices; Subject Term: RADAR signal processing; Subject Term: SPACE-time adaptive signal processing; Subject Term: ANTENNAS (Electronics); Subject Term: SIGNAL-to-noise ratio; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; Number of Pages: 15p; Document Type: Article L3 - 10.1109/TAES.2013.120389 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=95894601&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Woodburn, David AU - Wu, Thomas AU - Zhou, Lei AU - Hu, Yang AU - Lin, Yeong-Ren AU - Chow, Louis AU - Leland, Quinn T1 - High-Performance Electromechanical Actuator Dynamic Heat Generation Modeling. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2014/01// VL - 50 IS - 1 M3 - Article SP - 530 EP - 541 SN - 00189251 AB - All-electric aircraft is a high-priority goal in the avionics community. Both increased reliability and efficiency are the promised implications of this move. But, thermal management has become a significant problem that must be resolved before reaching this goal. Electromechanical actuators (EMAs) are of special concern. Advanced analysis technologies such as the finite element method (FEM) and intelligent control systems such as field-oriented control (FOC) are being used to better understand the source of the heat and to eliminate as much of it as possible. This paper describes the nonlinear, lumped-element, integrated modeling of a permanent magnet (PM) motor used in an EMA. The parameters, including nonlinear inductance, rotor flux linkage, and thermal resistances and capacitances, are tuned using FEM models of a real, commercial actuator. The FOC scheme and the lumped-element thermal model are also described. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES KW - RELIABILITY (Engineering) KW - THERMAL management (Electronic packaging) KW - FINITE element method KW - AVIONICS KW - FIELD orientation principle (Electrical engineering) N1 - Accession Number: 95894603; Woodburn, David 1; Wu, Thomas 2; Zhou, Lei 3; Hu, Yang 2; Lin, Yeong-Ren 3; Chow, Louis 3; Leland, Quinn 4; Affiliations: 1: General Electric, Dayton, OH; 2: University of Central Florida, Orlando, FL 32816; 3: Air Force Research Laboratory, Orlando, FL 32816; 4: Air Force Research Laboratory, OH; Issue Info: Jan2014, Vol. 50 Issue 1, p530; Thesaurus Term: AIRPLANES; Thesaurus Term: RELIABILITY (Engineering); Thesaurus Term: THERMAL management (Electronic packaging); Thesaurus Term: FINITE element method; Subject Term: AVIONICS; Subject Term: FIELD orientation principle (Electrical engineering); NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TAES.2013.120338 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=95894603&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Wang, Rui AU - Black, Richard J. AU - Moslehi, Behzad AU - Behbahani, Alireza R. AU - Mukherjee, Biswananth T1 - Optical Control Network for Avionics Applications Using a WDM Packet Ring. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2014/01// VL - 50 IS - 1 M3 - Article SP - 637 EP - 648 SN - 00189251 AB - We propose aviation real-time adaptive ring (AVATAR) as a potential solution for the integrated communication infrastructure for future aero-engine control systems. AVATAR features an Ethernet-over-WDM (wavelength-division multiplexing) architecture. It employs reconfigurable optical add/drop multiplexer (ROADM) as node technology. Compared with existing serialized data bus, e.g., time-triggered protocol (TTP), AVATAR exploits multi-wavelength and spatial reuse properties of an optical WDM ring through sophisticated packet scheduling. To quantitatively evaluate the advantages over existing avionic networks, and to understand the architectural parameters of AVATAR, optimal scheduling methods using mixed integer linear programming (MILP), as well as a simple, near-optimal heuristic, are presented. Numerical results demonstrate the superiority of AVATAR, with a simple two-channel configuration more than doubling the capacity of TTP. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES KW - COMPUTER network protocols KW - OPTICAL control KW - AVIONICS KW - MOTORS KW - WAVELENGTH division multiplexing KW - REAL-time control KW - COMMUNICATION infrastructure N1 - Accession Number: 95894610; Wang, Rui 1; Black, Richard J. 2; Moslehi, Behzad 2; Behbahani, Alireza R. 3; Mukherjee, Biswananth 1; Affiliations: 1: University of California, Davis, CA 95616; 2: Intelligent Fiber Optic Systems Corporation (IFOS), Santa Clara, CA 95054; 3: Air Force Research Laboratory, OH 45433; Issue Info: Jan2014, Vol. 50 Issue 1, p637; Thesaurus Term: AIRPLANES; Thesaurus Term: COMPUTER network protocols; Subject Term: OPTICAL control; Subject Term: AVIONICS; Subject Term: MOTORS; Subject Term: WAVELENGTH division multiplexing; Subject Term: REAL-time control; Subject Term: COMMUNICATION infrastructure; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TAES.2013.110758 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=95894610&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Horgan, Casey1 AU - Herzinger, Kurt1 T1 - A further investigation of using Theon’s ladder to find roots of quadratic equations. JO - International Journal of Mathematical Education in Science & Technology JF - International Journal of Mathematical Education in Science & Technology J1 - International Journal of Mathematical Education in Science & Technology PY - 2014/01// Y1 - 2014/01// VL - 45 IS - 1 CP - 1 M3 - Article SP - 150 EP - 158 SN - 0020739X AB - Theon’s ladder is an ancient method for easily approximatingroots of a real numberk. We extend previous work in this area by analysing a modification of this method for approximating roots of polynomials of the formx2+cx+d. In particular, we will focus on establishing to which root the ladder will converge. We use techniques from real analysis such as monotone sequences and continuity of rational functions to prove the main results. [ABSTRACT FROM PUBLISHER] KW - Mathematics -- Problems, exercises, etc. KW - Roots of equations KW - Recursion theory KW - Polynomials KW - Sequences (Mathematics) KW - Quadratic equations N1 - Accession Number: 92983067; Authors:Horgan, Casey 1; Herzinger, Kurt 1; Affiliations: 1: Department of Mathematical Sciences, United States Air Force Academy (USAF Academy), 2354 Fairchild Dr Suite 6D124,CO80840-6252, USA; Subject: Roots of equations; Subject: Recursion theory; Subject: Polynomials; Subject: Sequences (Mathematics); Subject: Quadratic equations; Subject: Mathematics -- Problems, exercises, etc.; Author-Supplied Keyword: bounded sequences; Author-Supplied Keyword: converging sequences; Author-Supplied Keyword: polynomials; Author-Supplied Keyword: recursion; Author-Supplied Keyword: root finding; Number of Pages: 9p; Record Type: Article L3 - 10.1080/0020739X.2013.822579 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=92983067&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR ID - 103781497 T1 - Development of a Perfused Cadaver Model of Exsanguinating Hemorrhage for Procedural Training and Device Evaluation. AU - Morgan, T. L. AU - De Lorenzo, R. A. AU - Ward, J. A. AU - White, C. E. AU - Husaini, S. H. AU - Kragh Jr., J. F. AU - Dawson, P. E. Y1 - 2014/01// N1 - Accession Number: 103781497. Language: English. Entry Date: 20150406. Revision Date: 20150710. Publication Type: Journal Article. Journal Subset: Biomedical; Editorial Board Reviewed; Peer Reviewed; USA. Special Interest: Critical Care; Emergency Care. KW - Hemorrhage -- Prevention and Control KW - Emergency Medical Technicians -- Education KW - Physicians -- Education KW - Models, Biological KW - Cadaver SP - 1 EP - 1 JO - Internet Journal of Medical Simulation JF - Internet Journal of Medical Simulation JA - INTERNET J MED SIMULATION VL - 5 IS - 1 CY - Sugar Land, Texas PB - Internet Scientific Publications LLC AB - Introduction: We demonstrate a novel perfused cadaver model with realistic tissue feel, true anatomy, and replicating key local physiologic parameters of acute life-threatening hemorrhage. Validation of fidelity is accomplished through measurement of hemodynamics and video confirmation of hemorrhage control. Methods: A pulsatile pump was attached to the ascending and descending aorta of a fresh or fresh-frozen cadaver via plastic tubing. The pump provided forward flow at 60 beats per minute of water with red coloring, simulating circulation. Flow probes were attached to arteries immediately proximal to an injury/transection site, with pressure probes cannulated in a contralateral artery that indicated systemic pressure. Hemorrhage control was performed using three different devices, with cessation of hemorrhage confirmed via physiologic data as well as visually. Results: Physiologic data confirmed that hemorrhage control was obtained under expected parameters. Flow immediately proximal to the injury site was negligible after hemorrhage control was attempted, while systemic pressure increased. When the hemorrhage control device was released, bleeding resumed and flow increased as measured proximal to the wound. Video recordings served as visual confirmation of hemorrhage control obtained using various devices. Conclusions: Our perfused cadaver model offers realistic tissue feel and simulated blood flow with a pulse, with hemorrhage control correlating to realistic physiologic parameters. The result is an accurate representation of visual, tactile, and physiologic modeling for acute life-threatening limb hemorrhage control. SN - 1559-4734 AD - Emergency Services, United States Air Force Wright-Patterson AFB, OH AD - Department of Emergency Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA; US Army Institute of Surgical Research Fort Sam Houston, Texas, USA AD - Department of Clinical Investigation, San Antonio Military Medical Center Fort Sam Houston, Texas, USA AD - US Army Institute of Surgical Research Fort Sam Houston, Texas, USA DO - 10.5580/IJMS.22234 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=103781497&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Lamorte, Nicolas AU - Friedmann, Peretz P. AU - Glaz, Bryan AU - Culler, Adam J. AU - Crowell, Andrew R. AU - McNamara, Jack J. T1 - Uncertainty Propagation in Hypersonic Aerothermoelastic Analysis. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2014/01//Jan/Feb2014 Y1 - 2014/01//Jan/Feb2014 VL - 51 IS - 1 M3 - Article SP - 192 EP - 203 SN - 00218669 AB - A framework for uncertainty propagation in hypersonic aeroelastic and aerothermoelastic analyses is presented. First, the aeroelastic stability of a typical section representative of a control surface on a hypersonic vehicle is examined. Variability in the uncoupled natural frequencies of the system is modeled using beta probability distributions. Uncertainty in the flutter Mach number is computed using stochastic collocation. Next, the stability of an aerodynamically heated panel representing a component of the skin of a hypersonic vehicle is considered. In this case, uncertainty is due to the location of transition from laminar to turbulent flow and the heat flux prediction. The effect of propagating these uncertainties on vehicle behavior is determined. For both cases, uncertainty is treated using stochastic collocation, which is a new and effective approach for incorporating uncertainty in this class of problems. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY -- Research KW - HYPERSONIC aerodynamics -- Research KW - HYPERSONIC planes KW - MACH number KW - LAMINAR flow KW - TURBULENT flow N1 - Accession Number: 94901892; Source Information: Jan/Feb2014, Vol. 51 Issue 1, p192; Subject Term: AEROELASTICITY -- Research; Subject Term: HYPERSONIC aerodynamics -- Research; Subject Term: HYPERSONIC planes; Subject Term: MACH number; Subject Term: LAMINAR flow; Subject Term: TURBULENT flow; Subject Term: ; Number of Pages: 12p; ; Document Type: Article; L3 - 10.2514/1.C032233 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=94901892&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Singh, Kumar V. AU - McDonough, Laura A. AU - Kolonay, Raymond AU - Coopers, Jonathan E. T1 - Receptance-Based Active Aeroelastic Control Using Multiple Control Surfaces. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2014/01//Jan/Feb2014 Y1 - 2014/01//Jan/Feb2014 VL - 51 IS - 1 M3 - Article SP - 335 EP - 342 SN - 00218669 AB - The article discusses a study which developed a multiple-input state and output feedback control strategy associated with wings that have multiple control surfaces based on the method of receptances. An aeroelastic model for a flexible wing and feedback control schemes are formulated for increasing flutter velocities by pole placement. It is noted that the control gains are dependent upon the open-loop transfer functions. KW - FEEDBACK control systems -- Research KW - AIRPLANE wings -- Research KW - AEROELASTICITY -- Research KW - AERODYNAMICS -- Research KW - FLUTTER (Aerodynamics) -- Research N1 - Accession Number: 94901907; Source Information: Jan/Feb2014, Vol. 51 Issue 1, p335; Subject Term: FEEDBACK control systems -- Research; Subject Term: AIRPLANE wings -- Research; Subject Term: AEROELASTICITY -- Research; Subject Term: AERODYNAMICS -- Research; Subject Term: FLUTTER (Aerodynamics) -- Research; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.2514/1.C032183 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=94901907&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Cook, James L. T1 - Killing without Heart: Limits on Robotic Warfare in an Age of Persistent Conflict. JO - Journal of Military Ethics JF - Journal of Military Ethics J1 - Journal of Military Ethics PY - 2014/01// Y1 - 2014/01// VL - 13 IS - 1 M3 - Book Review SP - 106 EP - 111 PB - Routledge SN - 15027570 KW - KILLING Without Heart: Limits on Robotic Warfare in an Age of Persistent Conflict (Book) KW - RIZA, M. Shane KW - ROBOTICS KW - NONFICTION N1 - Accession Number: 96067955; Source Information: 2014, Vol. 13 Issue 1, p106; Subject Term: KILLING Without Heart: Limits on Robotic Warfare in an Age of Persistent Conflict (Book); Subject Term: RIZA, M. Shane; Subject Term: ROBOTICS; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 6p; ; Document Type: Book Review; L3 - 10.1080/15027570.2014.910017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=96067955&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Cook, James L. T1 - Duty. JO - Journal of Military Ethics JF - Journal of Military Ethics J1 - Journal of Military Ethics PY - 2014/01// Y1 - 2014/01// VL - 13 IS - 1 M3 - Book Review SP - 112 EP - 115 PB - Routledge SN - 15027570 KW - DUTY (Book) KW - GATES, Robert Michael, 1943- KW - CABINET officers KW - NONFICTION N1 - Accession Number: 96067956; Source Information: 2014, Vol. 13 Issue 1, p112; Subject Term: DUTY (Book); Subject Term: GATES, Robert Michael, 1943-; Subject Term: CABINET officers; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 4p; ; Document Type: Book Review; L3 - 10.1080/15027570.2014.910018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=96067956&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 103877138 T1 - High-Resolution In Vivo Imaging of Regimes of Laser Damage to the Primate Retina. AU - Pocock, Ginger M. AU - Oliver, Jeffrey W. AU - Specht, Charles S. AU - Estep, J. Scot AU - Noojin, Gary D. AU - Schuster, Kurt AU - Rockwell, Benjamin A. Y1 - 2014/01// N1 - Accession Number: 103877138. Language: English. Entry Date: 20150129. Revision Date: 20150710. Publication Type: Journal Article; pictorial; research; tables/charts. Journal Subset: Biomedical; USA. NLM UID: 101524199. KW - Retina -- Injuries KW - Lasers -- Adverse Effects KW - Human KW - In Vivo Studies KW - Microscopy -- Methods KW - Tomography, Optical Coherence KW - Paired T-Tests SP - 1 EP - 14 JO - Journal of Ophthalmology JF - Journal of Ophthalmology JA - J OPHTHALMOL CY - New York, New York PB - Hindawi Publishing Corporation SN - 2090-004X AD - U.S. Air Force Research Laboratory, 711 HPW/RHDO, 4141 Petroleum Road, JBSA Fort Sam Houston, TX 78234, USA; Department of Biomedical Engineering, University of Texas at Austin, University Station No. C0800, Austin, TX 78712, USA AD - U.S. Air Force Research Laboratory, 711 HPW/RHDO, 4141 Petroleum Road, JBSA Fort Sam Houston, TX 78234, USA AD - Penn State Hershey Anatomic Pathology, 500 University Drive, Hershey, PA 17033, USA AD - U.S. Army Veterinary Corps at Tri-Services Research Laboratory, 4141 Petroleum Road, JBSA Fort Sam Houston, TX 78234, USA AD - TASC Inc., Biomedical Sciences and Technologies Department, JBSA Fort Sam Houston, TX 78234, USA DO - 2014/516854 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=103877138&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - AU - Knapp, Kenneth J.1 AU - Ferrante, Claudia J.2 T1 - Information Security Program Effectiveness in Organizations: The Moderating Role of Task Interdependence. JO - Journal of Organizational & End User Computing JF - Journal of Organizational & End User Computing J1 - Journal of Organizational & End User Computing PY - 2014/01//Jan-Mar2014 Y1 - 2014/01//Jan-Mar2014 VL - 26 IS - 1 CP - 1 M3 - Article SP - 27 EP - 46 SN - 15462234 AB - This research investigates the moderating role of task interdependence on factors influencing information security effectiveness in organizations. Drawing on the literature, the authors develop a theoretical model depicting top management support and awareness & training support as predictors of information security program effectiveness. Further, the model shows security culture as a partial mediator between the predictor and criterion variables. The authors then apply task interdependence as a moderator to the model. Results from a survey given to a sample of 371 certified information security professionals find support for the model while showing certain paths to be significant only under high task interdependence while others only under low task interdependence. In high task interdependence environments, security culture did not mediate the relationships between the predictor and criterion variables suggesting that managers focus on providing greater structural support to maximize security effectiveness. However, in low task interdependence, security culture fully mediated the relationships between the predictor and criterion variables suggesting that the role of culture is amplified and central in those environments. [ABSTRACT FROM AUTHOR] KW - Information storage & retrieval systems -- Security measures KW - Information services KW - Computer security KW - Security management KW - Social integration KW - Awareness & Training KW - Information Security KW - Security Culture KW - Structural Equation Modeling KW - Task Interdependence KW - Top Management Support N1 - Accession Number: 96426770; Authors: Knapp, Kenneth J. 1; Ferrante, Claudia J. 2; Affiliations: 1: Associate Professor and Chair, Information & Technology Management Department, University of Tampa, Florida; 2: Professor of Management, Director of Strategic Curriculum for Management, Department of Management, United States Air Force Academy; Subject: Information storage & retrieval systems -- Security measures; Subject: Security management; Subject: Information services; Subject: Social integration; Subject: Computer security; Author-Supplied Keyword: Awareness & Training; Author-Supplied Keyword: Information Security; Author-Supplied Keyword: Security Culture; Author-Supplied Keyword: Structural Equation Modeling; Author-Supplied Keyword: Task Interdependence; Author-Supplied Keyword: Top Management Support; Number of Pages: 20p; Record Type: Article L3 - 10.4018/joeuc.2014010102 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=96426770&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - Compton, Jonathan1,2 T1 - The Peril of Imposing the Rule of Law: Lessons From Liberia. JO - Minnesota Journal of International Law JF - Minnesota Journal of International Law J1 - Minnesota Journal of International Law PY - 2014///Winter2014 Y1 - 2014///Winter2014 VL - 23 IS - 1 CP - 1 M3 - Article SP - 47 EP - 78 SN - 19440294 AB - The article focuses on the imposition of a Western justice system in Liberia as a source of conflict. Topics discussed include the rule of law adopted by the U.S and the United Nations, the components of Liberia's formal and customary justice systems along with their strengths and weaknesses and Liberia's approach to the rule of law reform after the civil war. It also discusses Liberia's new approach focusing on strengthening the rule of law and reaching international standards. KW - Civil war KW - Administrative law reform KW - Justice administration -- United States KW - Rule of law -- United States KW - Liberia -- Politics & government N1 - Accession Number: 95438106; Authors:Compton, Jonathan 1,2; Affiliations: 1: Assistant Professor of Law, United States Air Force Academy; 2: Judge Advocate, United States Air Force; Subject: Justice administration -- United States; Subject: Rule of law -- United States; Subject: Civil war; Subject: Administrative law reform; Subject: Liberia -- Politics & government; Number of Pages: 32p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=95438106&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - GEN AU - HARRINGTON, KATHLEEN T1 - Sparta: a conversation with Roxana Robinson. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2014/01// Y1 - 2014/01// VL - 26 M3 - Interview SP - 1 EP - 13 PB - US Air Force Academy English Department SN - 10466967 AB - An interview with author Roxana Robinson is presented. Robinson discusses her novel "Sparta," her views about the American culture's behavior towards Sparta-Athens and her reasons for choosing a man to be the central character in her book. She also talks about the clarity that soldiers need before they commit to military service and the aspects of a soldier's military experiences that she considers too personal for literature. KW - ROBINSON, Roxana -- Interviews KW - WOMEN authors KW - SPARTA: A Novel (Book : Robinson) KW - MILITARY personnel KW - MILITARY service N1 - Accession Number: 102372711; Source Information: 2014, Vol. 26, preceding p1; Subject Term: ROBINSON, Roxana -- Interviews; Subject Term: WOMEN authors; Subject Term: SPARTA: A Novel (Book : Robinson); Subject Term: MILITARY personnel; Subject Term: MILITARY service; Subject Term: ; Number of Pages: 14p; ; Document Type: Interview; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=102372711&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - PIPES, CANDICE L. T1 - The Impossibility of Home. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2014/01// Y1 - 2014/01// VL - 26 M3 - Essay SP - 1 EP - 15 PB - US Air Force Academy English Department SN - 10466967 AB - An essay about African Americans' war participation as depicted in the book "Home" by Toni Morrison is presented. It discusses Morrison's portrayal of the difficulties faced by veterans in accepting the concept of home after the war is done and the way African American veterans were treated by the U.S. public when they return from the Korean War. It also analyzes the concept of racism in Morrison's novel. KW - HOME (Book : Morrison) KW - MORRISON, Toni, 1931- KW - AFRICAN American military personnel KW - VETERANS KW - RACISM in literature N1 - Accession Number: 102372773; Source Information: 2014, Vol. 26, p1; Subject Term: HOME (Book : Morrison); Subject Term: MORRISON, Toni, 1931-; Subject Term: AFRICAN American military personnel; Subject Term: VETERANS; Subject Term: RACISM in literature; Subject Term: ; Number of Pages: 15p; ; Document Type: Essay; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=102372773&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - PLICHTA, KATHERINE T1 - The Most Vital Phenomena. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2014/01// Y1 - 2014/01// VL - 26 M3 - Literary Criticism SP - 1 EP - 6 PB - US Air Force Academy English Department SN - 10466967 AB - A literary criticism of the book "A Constellation of Vital Phenomena" by Anthony Marra is presented. Topics discussed include the ways that Marra portrays the impact of the Second Chechen War war on several families, the ways that wars make it difficult for people not to succumb to moral depravity and the different ways that Marra's characters try to survive the war. KW - CONSTELLATION of Vital Phenomena, A (Book) KW - MARRA, Anthony KW - CHECHNIA (Russia) -- History -- Civil War, 1994- KW - WAR in literature KW - WAR & families N1 - Accession Number: 102372774; Source Information: 2014, Vol. 26, preceding p1; Subject Term: CONSTELLATION of Vital Phenomena, A (Book); Subject Term: MARRA, Anthony; Subject Term: CHECHNIA (Russia) -- History -- Civil War, 1994-; Subject Term: WAR in literature; Subject Term: WAR & families; Subject Term: ; Number of Pages: 7p; ; Document Type: Literary Criticism; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=102372774&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - VARGISH, THOMAS T1 - Postmodern Authority. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2014/01// Y1 - 2014/01// VL - 26 M3 - Essay SP - 1 EP - 28 PB - US Air Force Academy English Department SN - 10466967 AB - An essay about the values that support the exercise of authority in 21st century culture is presented. It examines how values have changed in the 21st century, the factors that influence people's decision on whether to accept an authority or not and the relationship between authority and leadership. It also analyzes the ways of translating authority into leadership. KW - VALUES (Ethics) KW - AUTHORITY KW - LEADERSHIP KW - PSYCHOLOGY KW - POLITICAL science N1 - Accession Number: 102372788; Source Information: 2014, Vol. 26, p1; Subject Term: VALUES (Ethics); Subject Term: AUTHORITY; Subject Term: LEADERSHIP; Subject Term: PSYCHOLOGY; Subject Term: POLITICAL science; Subject Term: ; Number of Pages: 28p; ; Document Type: Essay; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=102372788&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Swain, Kristine T1 - Glorious Misadventures: Nicholai Rezanov and the Dream of a Russian America. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2014/01// Y1 - 2014/01// VL - 26 M3 - Book Review SP - 15 EP - 18 PB - US Air Force Academy English Department SN - 10466967 KW - GLORIOUS Misadventures: Nikolai Rezanov & the Dream of a Russian America (Book) KW - MATTHEWS, Owen KW - ADVENTURE & adventurers KW - NONFICTION N1 - Accession Number: 102372723; Source Information: 2014, Vol. 26, p15; Subject Term: GLORIOUS Misadventures: Nikolai Rezanov & the Dream of a Russian America (Book); Subject Term: MATTHEWS, Owen; Subject Term: ADVENTURE & adventurers; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 4p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=102372723&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Crane, Mike T1 - Our Lives, Our Fortunes, and Our Sacred Honor: The Forging of American Independence, 1774-1776. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2014/01// Y1 - 2014/01// VL - 26 M3 - Book Review SP - 19 EP - 21 PB - US Air Force Academy English Department SN - 10466967 KW - OUR Lives, Our Fortunes & Our Sacred Honor: The Forging of American Independence 1774-1776 (Book) KW - BEEMAN, Richard R. KW - AUTONOMY (Political science) KW - NONFICTION N1 - Accession Number: 102372724; Source Information: 2014, Vol. 26, p19; Subject Term: OUR Lives, Our Fortunes & Our Sacred Honor: The Forging of American Independence 1774-1776 (Book); Subject Term: BEEMAN, Richard R.; Subject Term: AUTONOMY (Political science); Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=102372724&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - McClure, Jason T1 - Engineers of Victory: The Problem Solvers Who Turned the Tide in the Second World War. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2014/01// Y1 - 2014/01// VL - 26 M3 - Book Review SP - 21 EP - 24 PB - US Air Force Academy English Department SN - 10466967 KW - ENGINEERS of Victory: The Problem Solvers Who Turned the Tide in the Second World War (Book) KW - KENNEDY, Paul KW - WORLD War, 1939-1945 KW - NONFICTION N1 - Accession Number: 102372725; Source Information: 2014, Vol. 26, p21; Subject Term: ENGINEERS of Victory: The Problem Solvers Who Turned the Tide in the Second World War (Book); Subject Term: KENNEDY, Paul; Subject Term: WORLD War, 1939-1945; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 4p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=102372725&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Nort, Andrea Trocha-Van T1 - The Elizabethans. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2014/01// Y1 - 2014/01// VL - 26 M3 - Book Review SP - 25 EP - 28 PB - US Air Force Academy English Department SN - 10466967 KW - ELIZABETHANS, The (Book : Wilson) KW - WILSON, A. N., 1950- KW - GREAT Britain -- History -- Elizabeth, 1558-1603 KW - NONFICTION N1 - Accession Number: 102372726; Source Information: 2014, Vol. 26, p25; Subject Term: ELIZABETHANS, The (Book : Wilson); Subject Term: WILSON, A. N., 1950-; Subject Term: GREAT Britain -- History -- Elizabeth, 1558-1603; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 4p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=102372726&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2014-07516-004 AN - 2014-07516-004 AU - McIntire, John P. AU - Havig, Paul R. AU - Geiselman, Eric E. T1 - Stereoscopic 3D displays and human performance: A comprehensive review. JF - Displays JO - Displays JA - Displays Y1 - 2014/01// VL - 35 IS - 1 SP - 18 EP - 26 CY - Netherlands PB - Elsevier Science SN - 0141-9382 AD - McIntire, John P. N1 - Accession Number: 2014-07516-004. Partial author list: First Author & Affiliation: McIntire, John P.; 711th Human Performance Wing, US Air Force Research Laboratory, Dayton, OH, US. Release Date: 20140616. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Human Computer Interaction; Human Factors Engineering; Visual Displays. Classification: Human Factors Engineering (4010). Population: Human (10). Methodology: Literature Review. References Available: Y. Page Count: 9. Issue Publication Date: Jan, 2014. Publication History: First Posted Date: Nov 7, 2013; Accepted Date: Oct 28, 2013; Revised Date: Aug 7, 2013; First Submitted Date: Dec 4, 2012. AB - To answer the question: 'what is 3D good for?' we reviewed the body of literature concerning the performance implications of stereoscopic 3D (S3D) displays versus non-stereo (2D or monoscopic) displays. We summarized results of over 160 publications describing over 180 experiments spanning 51 years of research in various fields including human factors psychology/engineering, human–computer interaction, vision science, visualization, and medicine. Publications were included if they described at least one task with a performance-based experimental evaluation of an S3D display versus a non-stereo display under comparable viewing conditions. We classified each study according to the experimental task(s) of primary interest: (a) judgments of positions and/or distances; (b) finding, identifying, or classifying objects; (c) spatial manipulations of real or virtual objects; (d) navigation; (e) spatial understanding, memory, or recall and (f) learning, training, or planning. We found that S3D display viewing improved performance over traditional non-stereo (2D) displays in 60% of the reported experiments. In 15% of the experiments, S3D either showed a marginal benefit or the results were mixed or unclear. In 25% of experiments, S3D displays offered no benefit over non-stereo 2D viewing (and in some rare cases, harmed performance). From this review, stereoscopic 3D displays were found to be most useful for tasks involving the manipulation of objects and for finding/identifying/classifying objects or imagery. We examine instances where S3D did not support superior task performance. We discuss the implications of our findings with regard to various fields of research concerning stereoscopic displays within the context of the investigated tasks. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - three-dimensional display KW - stereoscopic implications KW - human computer interaction KW - human factors engineering KW - 2014 KW - Human Computer Interaction KW - Human Factors Engineering KW - Visual Displays KW - 2014 DO - 10.1016/j.displa.2013.10.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-07516-004&site=ehost-live&scope=site UR - john.mcintire.1@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2014-00458-005 AN - 2014-00458-005 AU - Rose, Mark R. AU - Barron, Laura G. AU - Carretta, Thomas R. AU - Arnold, Richard D. AU - Howse, William R. T1 - Early identification of unmanned aircraft pilots using measures of personality and aptitude. T3 - Pilot selection JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 2014/01// VL - 24 IS - 1 SP - 36 EP - 52 CY - United Kingdom PB - Taylor & Francis SN - 1050-8414 SN - 1532-7108 AD - Rose, Mark R., HQ Air Force Personnel Center, Randolph AFB, TX, US, 78150 N1 - Accession Number: 2014-00458-005. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Rose, Mark R.; Air Force Personnel Center, Randolph Air Force Base, TX, US. Other Publishers: Lawrence Erlbaum. Release Date: 20140519. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Aircraft Pilots; Military Training; Personality Measures; Psychometrics. Minor Descriptor: Aircraft. Classification: Occupational & Employment Testing (2228); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Pilot Candidate Selection Method; Air Force Officer Qualifying Test; Test of Basic Aviation Skills; Prior Flying Experience Measure; Self-Description Inventory. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 17. Issue Publication Date: Jan, 2014. Copyright Statement: Taylor & Francis Group, LLC. 2014. AB - [Correction Notice: An Erratum for this article was reported in Vol 24(2) of The International Journal of Aviation Psychology (see record [rid]2014-12853-012[/rid]). The article was printed with the incorrect manuscript received date. However, it was received in June 2012.] This study evaluated the extent to which personality measures (Self-Description Inventory+) could improve prediction of remotely piloted aircraft (RPA) training outcomes, beyond currently used cognitive, psychomotor, and aviation knowledge and experience predictors included in the U.S. Air Force (USAF) Pilot Candidate Selection Method 2.0. Participants were 170 USAF officers with RPA Initial Flight Screening (RFS) outcomes and 110 USAF officers with RPA Instrument Qualification (RIQ) outcomes. Both RFS and RIQ emphasize development of skills traditionally required for manned aircraft pilots, also considered essential for USAF RPA pilots. Results showed significant negative relationships between the Big Five personality trait of Openness and several RPA training outcomes, and significant incremental variance explained by Openness beyond other predictors. Additionally, RFS and RIQ training outcomes were generally predicted by measures traditionally used for selection into manned aircraft pilot training courses and careers. Together, these findings suggest that personality, specifically Openness scores, and scores on traditional pilot selection measures, can serve as useful indicators in the early identification of RPA pilot talent. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - Self-Description Inventory KW - aircraft training KW - Air Force KW - military training KW - psychometrics KW - personality measures KW - remotely piloted aircraft KW - drone operation KW - 2014 KW - Air Force Personnel KW - Aircraft Pilots KW - Military Training KW - Personality Measures KW - Psychometrics KW - Aircraft KW - 2014 DO - 10.1080/10508414.2014.860849 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-00458-005&site=ehost-live&scope=site UR - Mark.Rose.7@US.AF.Mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Davis, V. A. AU - Mandell, M. J. AU - Cooke, D. C. AU - Wheelock, A. AU - Mateo-Velez, J.-C. AU - Roussel, J.-F. AU - Payan, D. AU - Cho, M. AU - Koga, K. T1 - Comparison of Low Earth Orbit Wake Current Collection Simulations Using Nascap-2k, SPIS, and MUSCAT Computer Codes. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2013/12/10/Dec2013 Part 2 Y1 - 2013/12/10/Dec2013 Part 2 VL - 41 IS - 12 M3 - Article SP - 3303 EP - 3309 SN - 00933813 AB - The structure of the wake generated by an object immersed in a dense, low temperature, drifting plasma is simulated using three different spacecraft charging software tools, Nascap-2k, the Spacecraft Plasma Interaction Software (SPIS), and the Multi-Utility Spacecraft Charging Analysis Tool (MUSCAT). Each tool uses different algorithms to simulate the particle dynamics, the space charge effect on the electric field, and the currents collected by the object. The system modeled is a plate with a high negative potential on the wake side. The results from the different simulations agree with each other and with experiments conducted on the same configuration. In particular, the nontrivial shape of the collected current density map is correctly simulated by all the codes. The comparison illustrates the strengths of the various approaches. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles -- Electrostatic charging KW - LOW temperature plasmas KW - PARTICLES (Nuclear physics) KW - ELECTRIC fields KW - ANALYTICAL mechanics N1 - Accession Number: 92943634; Source Information: Dec2013 Part 2, Vol. 41 Issue 12, p3303; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: LOW temperature plasmas; Subject Term: PARTICLES (Nuclear physics); Subject Term: ELECTRIC fields; Subject Term: ANALYTICAL mechanics; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TPS.2013.2247424 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=92943634&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ferguson, Dale C. AU - Vayner, Boris V. T1 - Flashover Current Pulse Formation and the Perimeter Theory. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2013/12/10/Dec2013 Part 2 Y1 - 2013/12/10/Dec2013 Part 2 VL - 41 IS - 12 M3 - Article SP - 3393 EP - 3401 SN - 00933813 AB - Electrostatic discharges on the spacecraft solar array surfaces have been studied for over 40 years. Multiple tests in many laboratories have been performed to reveal the mechanisms of current pulse formation, to determine plasma expansion speed and dimensions of neutralized surface area, and to define the parameters of the electric circuits to be able to adequately simulate space discharges in plasma chambers. Initially, a thorough analysis of all the available experimental data is performed to achieve progress in the creation of a satisfactory theoretical description of pulse wave forms and surface neutralization processes. It is shown that there are two main reasons for the significant variations observed in pulse wave forms, durations, and amplitudes; differences in test arrangements and pure statistical variations caused by the random nature of arc inception and development. Then, the theoretical model of flashover current pulse formation due to coverglass charge neutralization at the plasma perimeter is carefully considered and confronted with existing experimental data. It is found that this theory contains some appropriate elements but cannot be applied for quantitative explanation of pulse wave forms. The comparison of theoretical results and experimental data clearly shows that there is no (and there cannot be) such thing as a standard pulse. To estimate the possibility of detrimental effects from primary arcs, these events must be studied and analyzed statistically. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLASHOVER KW - DIRECT currents KW - ELECTRIC fields KW - SPACE vehicles -- Electrostatic charging KW - ELECTROSTATIC discharges N1 - Accession Number: 92943651; Source Information: Dec2013 Part 2, Vol. 41 Issue 12, p3393; Subject Term: FLASHOVER; Subject Term: DIRECT currents; Subject Term: ELECTRIC fields; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: ELECTROSTATIC discharges; Subject Term: ; Number of Pages: 9p; ; Document Type: Article; L3 - 10.1109/TPS.2013.2279760 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=92943651&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ferguson, Dale C. AU - Cooke, David AU - Pfaff, Robert AU - Rowland, Douglas AU - Klenzing, Jeffrey AU - Freudenreich, Henry T1 - Ram/Wake and Surface Layer Effects on DC Electric Field Measurements in LEO. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2013/12/10/Dec2013 Part 2 Y1 - 2013/12/10/Dec2013 Part 2 VL - 41 IS - 12 M3 - Article SP - 3459 EP - 3470 SN - 00933813 AB - The USAF Communication/Navigation Outage Forecast System satellite, launched into an eccentric low earth orbit (401 km perigee by 867 km apogee) of 13^\circ inclination on April 16, 2008, has a set of dc electric field probes that constitute part of the Vector Electric Field Investigation (VEFI). In order to obtain the ambient electric field, the v\times B component of electric field must be subtracted from the VEFI measurements. After this subtraction and the subtraction of the ambient dc electric components, a residual dc offset directed toward the spacecraft wake is still observed, which varies somewhat within an orbit and on longer timescales. One of the interesting features of these offsets is that when the satellite is occasionally rotated, the offsets are reset to their baseline values, only to come back within a month or so. Various hypotheses have been proposed to explain the residual dc offsets. In this paper, we explore the possibilities that either the influence of the spacecraft wake on the sensors or that modified surface layers on the probe surfaces are producing the offsets. Nascap-2k and EWB models are used to show the various influences of the wake and of surface materials. Finally, a hypothesis is produced that quantitatively explains many of the salient features of the offsets. The feasibility of using dc electric field probes in space is reaffirmed. Recommendations for probe construction on future spacecraft to ameliorate spurious effects are presented. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOW earth orbit satellites -- Research KW - ELECTRIC fields KW - DIRECT currents -- Research KW - SPACE vehicles -- Electrostatic charging KW - FIELD theory (Physics) N1 - Accession Number: 92943648; Source Information: Dec2013 Part 2, Vol. 41 Issue 12, p3459; Subject Term: LOW earth orbit satellites -- Research; Subject Term: ELECTRIC fields; Subject Term: DIRECT currents -- Research; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: FIELD theory (Physics); Subject Term: ; Number of Pages: 12p; ; Document Type: Article; L3 - 10.1109/TPS.2013.2278615 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=92943648&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Gunasekera, Thusitha S. AU - Striebich, Richard C. AU - Mueller, Susan S. AU - Strobel, Ellen M. AU - Ruiz, Oscar N. T1 - Transcriptional Profiling Suggests that Multiple Metabolic Adaptations are Required for Effective Proliferation of Pseudomonas aeruginosa in Jet Fuel. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2013/12/03/ VL - 47 IS - 23 M3 - Article SP - 13449 EP - 13458 SN - 0013936X AB - Fuel is a harsh environment for microbial growth. However, some bacteria can grow well due to their adaptive mechanisms. Our goal was to characterize the adaptations required for Pseudomonas aeruginosa proliferation in fueL We have used DNA-microarrays and RT-PCR to characterize the transcriptional response of P. aeruginosa to fuel. Transcriptomics revealed that genes essential for medium- and long-chain n- alkane degradation including alkBl and alkB2 were transcriptionally induced. Gas chromatography confirmed that P. aeruginosa possesses pathways to degrade different length n-alkanes, favoring the use of s-C11-18. Furthermore, a gamut of synergistic metabolic pathways, including porins, efflux pumps, biofllm formation, and iron transport, were transcriptionally regulated. Bioassays confirmed that efflux pumps and biofllm formation were required for growth in jet fueL Furthermore, cell homeostasis appeared to be carefully maintained by the regulation of porins and efflux pumps. The Mex RND efflux pumps were required for fuel tolerance; blockage of these pumps precluded growth in fuel. This study provides a global understanding of the multiple metabolic adaptations required by bacteria for survival and proliferation in fuel-containing environments. This information can be applied to improve the fuel bioremediation properties of bacteria. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Microbial growth KW - Bacteria KW - Pseudomonas aeruginosa KW - Pseudomonas KW - Gas chromatography N1 - Accession Number: 95311839; Gunasekera, Thusitha S. 1; Striebich, Richard C. 1; Mueller, Susan S. 1; Strobel, Ellen M. 2; Ruiz, Oscar N. 2; Email Address: oscar.ruiz@us.af.mil; Affiliations: 1: University of Dayton Research Jnstitute, University of Dayton, Dayton Ohio 45469, United States; 2: Aerospace Systems Directorate, Fuels and Energy Branch, Air Force Research Laboratory, 1790 Loop Road, Bldg. 490, Wright-Patterson AFB, Ohio 45433, United States; Issue Info: 12/3/2013, Vol. 47 Issue 23, p13449; Thesaurus Term: RESEARCH; Subject Term: Microbial growth; Subject Term: Bacteria; Subject Term: Pseudomonas aeruginosa; Subject Term: Pseudomonas; Subject Term: Gas chromatography; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 10p; Document Type: Article L3 - 10.1021/es403163k UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=95311839&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Schmidt, Jacob AU - Ganguly, Biswa T1 - Effect of pulsed, sub-breakdown applied electric field on propane/air flame through simultaneous OH/acetone PLIF. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2013/12// VL - 160 IS - 12 M3 - Article SP - 2820 EP - 2826 SN - 00102180 AB - Abstract: The effects of chemi-ion current induced flow perturbations in a premixed, laminar propane/air flame at atmospheric pressure have been measured with 30ms-wide applied pulsed voltages. Single-shot OH and acetone planar laser-induced fluorescence (PLIF) images have been collected to measure the spatio-temporal structural changes to a laminar flame with incoming flow speed of 2m/s in response to positive polarity voltage pulses of 2.8kV over a 20mm electrode gap. OH and acetone PLIF are specifically chosen to measure reaction zone modification as the flame undergoes large-scale, stochastic changes. These large-scale changes of flame structure are observed after the flame becomes fully crushed and unstable behavior occurs lasting until the end of the applied voltage pulse. The experimental results of combined OH and acetone PLIF presented in this paper show a significant widening of the reaction zone observed during this unstable behavior. This widening of the reaction zone is indicative of a flame brush normally observed in turbulent flames, demonstrating the ability of the sub-breakdown applied voltage to cause a laminar flame to a transitioning-to-turbulent behavior. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Acetone KW - Flame KW - Propane KW - Electric fields KW - Laser-induced fluorescence KW - Stochastic analysis KW - Electric field KW - Hydrocarbon combustion KW - Laser diagnostics KW - Premixed laminar flame N1 - Accession Number: 90629855; Schmidt, Jacob 1; Email Address: jschmidt@spectralenergies.com; Ganguly, Biswa 2; Affiliations: 1: Spectral Energies, LLC, 5100 Springfield Street, Dayton, OH 45431, United States; 2: Air Force Research Laboratory, WPAFB, OH 45433, United States; Issue Info: Dec2013, Vol. 160 Issue 12, p2820; Thesaurus Term: Acetone; Subject Term: Flame; Subject Term: Propane; Subject Term: Electric fields; Subject Term: Laser-induced fluorescence; Subject Term: Stochastic analysis; Author-Supplied Keyword: Electric field; Author-Supplied Keyword: Hydrocarbon combustion; Author-Supplied Keyword: Laser diagnostics; Author-Supplied Keyword: Premixed laminar flame; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 424710 Petroleum Bulk Stations and Terminals; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 454312 Liquefied petroleum gas (bottled gas) dealers; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.combustflame.2013.06.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=90629855&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Coutu, Ronald A. AU - Ostrow, Scott A. T1 - Microelectromechanical Systems (MEMS) Resistive Heaters as Circuit Protection Devices. JO - IEEE Transactions on Components, Packaging & Manufacturing Technology JF - IEEE Transactions on Components, Packaging & Manufacturing Technology Y1 - 2013/12// VL - 3 IS - 12 M3 - Article SP - 2174 EP - 2179 SN - 21563950 AB - With increased opportunities for the exploitation (i.e., reverse engineering) of vulnerable electronic components and systems, circuit protection has become a critical issue. Circuit protection techniques are generally software-based and include cryptography (encryption/decryption), obfuscation of codes, and software guards. Examples of hardware-based circuit protection include protective coatings on integrated circuits, trusted foundries, and macro-sized components that self-destruct, thus destroying critical components. This paper is the first to investigate the use of microelectromechanical systems (MEMS) to provide hardware-based protection of critical electronic components to prevent reverse engineering or other exploitation attempts. Specifically, surface-micromachined polycrystalline silicon to be used as meandering resistive heaters were designed analytically and fabricated using a commercially available MEMS prototyping service (i.e., PolyMUMPs), and integrated with representative components potentially at risk for exploitation, in this case pseudomorphic high-electron mobility transistors (pHEMTs). The MEMS heaters were initiated to self-destruct, destroying a critical circuit component and thwart a reverse engineering attempt. Tests revealed reliable self-destruction of the MEMS heaters with approximately 25 V applied, resulting in either complete operational failure or severely altering the pHEMT device physics. The prevalent failure mechanism was metallurgical, in that the material on the surface of the device was changed, and the specific failure mode was the creation of a short-circuit. Another failure mode was degraded device operation due to permanently altered device physics related to either dopant diffusion or ohmic contact degradation. The results, in terms of the failure of a targeted electronic component, demonstrate the utility of using MEMS devices to protect critical components which are otherwise vulnerable to exploitation. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Components, Packaging & Manufacturing Technology is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTEGRATED circuits KW - CRYPTOGRAPHY KW - COMPUTER software KW - MICROELECTROMECHANICAL systems KW - HEATING KW - THERMAL conductivity KW - REVERSE engineering KW - Circuit protection KW - Intellectual property KW - Microelectromechanical systems KW - microelectromechanical systems (MEMS) KW - PHEMTs KW - Resistance KW - resistive heaters KW - Reverse engineering KW - Thermal conductivity N1 - Accession Number: 92943456; Coutu, Ronald A. 1; Ostrow, Scott A. 2; Affiliations: 1: Department of Electrical Engineering, the Air Force Institute of Technology, Wright-Patterson Air Force Base, OH, USA; 2: United States Air Force, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH, USA; Issue Info: Dec2013, Vol. 3 Issue 12, p2174; Thesaurus Term: INTEGRATED circuits; Thesaurus Term: CRYPTOGRAPHY; Thesaurus Term: COMPUTER software; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: HEATING; Subject Term: THERMAL conductivity; Subject Term: REVERSE engineering; Author-Supplied Keyword: Circuit protection; Author-Supplied Keyword: Intellectual property; Author-Supplied Keyword: Microelectromechanical systems; Author-Supplied Keyword: microelectromechanical systems (MEMS); Author-Supplied Keyword: PHEMTs; Author-Supplied Keyword: Resistance; Author-Supplied Keyword: resistive heaters; Author-Supplied Keyword: Reverse engineering; Author-Supplied Keyword: Thermal conductivity; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TCPMT.2013.2282362 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=92943456&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Domonkos, Matthew AU - O'Loughlin, James T1 - Marxed transmission lines for compact pulsed power. JO - IEEE Transactions on Dielectrics & Electrical Insulation JF - IEEE Transactions on Dielectrics & Electrical Insulation Y1 - 2013/12// VL - 20 IS - 6 M3 - Article SP - 2350 EP - 2354 SN - 10709878 AB - The Marxed Blumlein line is a concept that has been touted as a highly compact pulsed power system because it combines the functions of energy storage, voltage scaling, and pulse shaping into a single sub-system. Inherent voltage reversal is compounded in a Marxed arrangement. The voltage reversal and transients induced by the switch jitter in a Marxed configuration require significant derating of the dielectric strength. Consequently, the system must be operated much below the intrinsic dielectric energy density, compromising efforts to design a compact pulsed power system. This paper presents the conclusion that for all practical configurations, the Marxed transmission line is the more compact architecture. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Dielectrics & Electrical Insulation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POWER transmission KW - ELECTRIC lines KW - PULSED power systems KW - ENERGY storage KW - POWER aware computing KW - VOLTAGE reversal KW - electrical insulation KW - Marxed operation KW - pulse forming line KW - Repetitive pulsed power KW - solid dielectric KW - transmission line N1 - Accession Number: 92943548; Domonkos, Matthew 1; O'Loughlin, James 1; Affiliations: 1: Air Force Research Laboratory 3550 Aberdeen Ave SE Kirtland AFB, NM 87117, USA; Issue Info: Dec2013, Vol. 20 Issue 6, p2350; Subject Term: POWER transmission; Subject Term: ELECTRIC lines; Subject Term: PULSED power systems; Subject Term: ENERGY storage; Subject Term: POWER aware computing; Subject Term: VOLTAGE reversal; Author-Supplied Keyword: electrical insulation; Author-Supplied Keyword: Marxed operation; Author-Supplied Keyword: pulse forming line; Author-Supplied Keyword: Repetitive pulsed power; Author-Supplied Keyword: solid dielectric; Author-Supplied Keyword: transmission line; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238910 Site Preparation Contractors; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TDEI.2013.6678889 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=92943548&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Edwards, Arthur H. AU - Barnaby, Hugh AU - Pineda, Andrew C. AU - Schultz, Peter A. T1 - Interface Effects on Total Energy Calculations for Radiation-Induced Defects. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2013/12//Dec2013 Part 1 VL - 60 IS - 6 M3 - Article SP - 4109 EP - 4115 SN - 00189499 AB - We present a new, approximate technique for estimating the polarization energy of point defects near interfaces in layered systems using semiconductor device simulation combined with a finite element quadrature technique. We show that we recapture the original, spherical Jost approximation in a homogeneous, infinite solid, as well as reproducing the exact result for a point charge near the interface of two dielectrics. We apply this technique to the silicon-silicon dioxide system for doped substrates, and for devices under bias. We show that the correction to calculated, bulk defect levels depends mildly on the distance from the interface. It depends more strongly on the substrate doping density. Finally, there is a significant dependence on gate bias. These results must be considered for proposed models for negative bias temperature instability (NBTI) that invoke tunneling from the silicon band edges into localized oxide traps. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Point defects KW - Ionizing radiation -- Dosage KW - Semiconductor devices KW - Electronic structure KW - Finite element method KW - Approximation methods KW - Boundary conditions KW - Doping KW - Electronic Structure KW - Finite element analysis KW - radiation-induced point defects KW - Substrates KW - Tunneling N1 - Accession Number: 93280950; Edwards, Arthur H. 1; Barnaby, Hugh 2; Pineda, Andrew C. 3; Schultz, Peter A. 4; Affiliations: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico; 2: Department of Electrical and Computer Engineering, Arizona State University, Tempe, AZ, USA; 3: Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM, USA; 4: Advanced Device Technlologies Department, Sandia National Laboratories, Albuquerque, NM, USA; Issue Info: Dec2013 Part 1, Vol. 60 Issue 6, p4109; Thesaurus Term: RESEARCH; Subject Term: Point defects; Subject Term: Ionizing radiation -- Dosage; Subject Term: Semiconductor devices; Subject Term: Electronic structure; Subject Term: Finite element method; Author-Supplied Keyword: Approximation methods; Author-Supplied Keyword: Boundary conditions; Author-Supplied Keyword: Doping; Author-Supplied Keyword: Electronic Structure; Author-Supplied Keyword: Finite element analysis; Author-Supplied Keyword: radiation-induced point defects; Author-Supplied Keyword: Substrates; Author-Supplied Keyword: Tunneling; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TNS.2013.2287882 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=93280950&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Ingalls, J. David AU - Gadlage, Matthew J. AU - Duncan, Adam R. AU - Kay, Matthew J. AU - Cole, Patrick L. AU - Hunt, Ken K. T1 - Implications of the Logical Decode on the Radiation Response of a Multi-Level Cell NAND Flash Memory. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2013/12//Dec2013 Part 1 VL - 60 IS - 6 M3 - Article SP - 4451 EP - 4456 SN - 00189499 AB - The radiation response of a multi-level cell (MLC) NAND flash is used to determine the organization of logical states as they correspond to floating gate charge levels of constituent bit cell transistors. This “logical decode” is then used to demonstrate how an MLC device can be used to emulate a single-level cell (SLC) flash with total dose radiation sensitivity equivalent to and even surpassing that of a comparable actual SLC device. In addition, it is shown that the logical decode must be taken into account when performing radiation testing on MLC flash devices so as to gather accurate worst case response data. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Flash memories (Computers) KW - Ionizing radiation -- Dosage KW - Effect of radiation on transistors KW - Field-effect transistors KW - Gray codes KW - Flash memories KW - Flash memory KW - floating gate KW - heavy ion KW - Logic gates KW - multi-level cell (MLC) KW - Nonvolatile memory KW - Radiation effects KW - single-level cell (SLC) KW - total ionizing dose KW - x-ray KW - X-ray scattering N1 - Accession Number: 93280959; Ingalls, J. David 1; Gadlage, Matthew J. 1; Duncan, Adam R. 1; Kay, Matthew J. 1; Cole, Patrick L. 1; Hunt, Ken K. 2; Affiliations: 1: NSWC Crane, Crane, IN, USA; 2: Air Force Research Laboratory (Retired), Albuquerque, NM, USA; Issue Info: Dec2013 Part 1, Vol. 60 Issue 6, p4451; Thesaurus Term: RESEARCH; Subject Term: Flash memories (Computers); Subject Term: Ionizing radiation -- Dosage; Subject Term: Effect of radiation on transistors; Subject Term: Field-effect transistors; Subject Term: Gray codes; Author-Supplied Keyword: Flash memories; Author-Supplied Keyword: Flash memory; Author-Supplied Keyword: floating gate; Author-Supplied Keyword: heavy ion; Author-Supplied Keyword: Logic gates; Author-Supplied Keyword: multi-level cell (MLC); Author-Supplied Keyword: Nonvolatile memory; Author-Supplied Keyword: Radiation effects; Author-Supplied Keyword: single-level cell (SLC); Author-Supplied Keyword: total ionizing dose; Author-Supplied Keyword: x-ray; Author-Supplied Keyword: X-ray scattering; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TNS.2013.2282699 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=93280959&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hammack, Stephen AU - Kostka, Stanislav AU - Lynch, Amy AU - Carter, Campbell AU - Lee, Tonghun T1 - Simultaneous 10-kHz PLIF and Chemiluminescence Imaging of OH Radicals in a Microwave Plasma-Enhanced Flame. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2013/12//Dec2013 Part 1 Y1 - 2013/12//Dec2013 Part 1 VL - 41 IS - 12 M3 - Article SP - 3279 EP - 3286 SN - 00933813 AB - This paper examines the structure of microwave (MW)-enhanced flames through 10-kHz imaging. High repetition rate laser diagnostic methods are used to simultaneously record 2-D images of OH laser-induced fluorescence and chemiluminescence within an atmospheric plasma-enhanced flame. Collecting both OH planar laser-induced fluorescence and chemiluminescence allows for observation of OH radicals in the plane of the thin laser sheet as well as volume-integrated excited state emission. A tunable, MW waveguide plasma source—operating at 2.45 GHz and delivering 90–130 W to the flowfield—ignites and sustains a CH4/air flame, whereas laser-induced fluorescence and chemiluminescence are acquired at a sustained framing rate of 10 kHz, using two intensified CMOS cameras and a synchronized laser. Multiple geometries and flames (premixed and nonpremixed) are studied by adjusting gas flow compositions and the plasma applicator nozzle components. A stoichiometric premixed flame configuration produces a divergent flame with large-scale fluctuations and vortex shedding into ambient air and is capable of feedstock flow velocities >20~m/s for combustion-to-plasma power ratios >10:1. Another arrangement produces plasma along the initial mixing layer of a nonpremixed flame, yielding a thin cylindrical reaction zone of coincident chemiluminescence and fluorescence. Replacing the fuel with rich premixed gases produces a narrow conical flame anchored by the circular plasma discharge with a little flamefront fluctuation. The high-speed diagnostics capture OH signals in cinematic sequences, providing new understanding of the plasma-assisted flame holding mechanism and allowing for the tracking of individual flow feature development. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROXIDES KW - RADICALS (Chemistry) KW - CHEMILUMINESCENCE KW - MICROWAVE plasmas KW - GAS dynamics N1 - Accession Number: 92943621; Source Information: Dec2013 Part 1, Vol. 41 Issue 12, p3279; Subject Term: HYDROXIDES; Subject Term: RADICALS (Chemistry); Subject Term: CHEMILUMINESCENCE; Subject Term: MICROWAVE plasmas; Subject Term: GAS dynamics; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.1109/TPS.2013.2280729 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=92943621&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ranatunga, Vipul AU - Clay, Stephen B T1 - Cohesive modeling of damage growth in z-pinned laminates under mode-I loading. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2013/12// VL - 47 IS - 26 M3 - Article SP - 3269 EP - 3283 SN - 00219983 AB - In this paper, a traction-separation-based cohesive modeling approach is proposed to predict the effect of z-pinning on laminated composites. A detailed experimental characterization of the z-pin pullout process using the flatwise tension test is presented. Utilizing these flatwise tension results, numerical simulation of the progressive damage due to delaminations in a double cantilever beam with z-pinning has been performed. Experimental details of the z-pinned double cantilever beams are presented for IM7/977-3 graphite/epoxy. The approach taken in this study utilizing the cohesive elements within the Abaqus® finite element software has proven that the models can predict the behavior of z-pinned composites close to experimental observations. It was found that the discretization of the fracture resistance curve along the z-pin field is essential to capture the dynamics of the delamination accurately. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COHESIVE strength (Mechanics) KW - FRACTURE mechanics KW - CRYSTAL growth KW - LAMINATED materials KW - LOADS (Mechanics) KW - COMPOSITE materials -- Delamination KW - cohesive zone modeling KW - delamination KW - fracture KW - Z-pinning N1 - Accession Number: 92036463; Ranatunga, Vipul 1; Email Address: ranatupv@muohio.edu; Clay, Stephen B 2; Source Information: Dec2013, Vol. 47 Issue 26, p3269; Subject: COHESIVE strength (Mechanics); Subject: FRACTURE mechanics; Subject: CRYSTAL growth; Subject: LAMINATED materials; Subject: LOADS (Mechanics); Subject: COMPOSITE materials -- Delamination; Author-Supplied Keyword: cohesive zone modeling; Author-Supplied Keyword: delamination; Author-Supplied Keyword: fracture; Author-Supplied Keyword: Z-pinning; Number of Pages: 15p; Document Type: Article; Full Text Word Count: 5893 L3 - 10.1177/0021998312464078 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=92036463&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Jensen, Mark N. T1 - Hard Moral Choices in the Military. JO - Journal of Military Ethics JF - Journal of Military Ethics J1 - Journal of Military Ethics PY - 2013/12// Y1 - 2013/12// VL - 12 IS - 4 M3 - Article SP - 341 EP - 356 PB - Routledge SN - 15027570 AB - Integrating and building on the constitutional ethics paradigm proposed by Paul Roush and the neo-intuitionist moral decision-making scheme proposed by Robert Audi, I defend a novel decision-making procedure for hard moral choices in the military. The key to Roush's model of justifiable disobedience is a soldier's ability to recognize when an ostensibly legal order constitutes a ‘fundamental violation of justice’. However, the nature and structure of this act of moral recognition requires more elucidation than Roush has provided. In order to avoid grounding moral recognition and decision-making on a narrowly partisan account of moral theory (e.g. deontology or consequentialism), I appeal to Audi's neo-intuitionist account ofprima faciemoral duties. I then repurpose and develop further a decision procedure that Audi proposed for the business context. When faced with an ethical dilemma in military service, a soldier should (1) classify his/her obligations; (2) identify the conflicts between his/her obligations; (3) assess the weightiness of his/her obligations; (4) determine ethically viable options; and then (5) make a decision. I close the discussion with an examination of the practical problems one might face in adopting the proposal. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Military Ethics is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARMED Forces -- Moral & ethical aspects KW - MILITARY morale KW - ROUSH, Paul KW - DECISION making -- Moral & ethical aspects KW - AUDI, Robert, 1941- KW - ETHICAL intuitionism N1 - Accession Number: 93799007; Source Information: Dec2013, Vol. 12 Issue 4, p341; Subject Term: ARMED Forces -- Moral & ethical aspects; Subject Term: MILITARY morale; Subject Term: ROUSH, Paul; Subject Term: DECISION making -- Moral & ethical aspects; Subject Term: AUDI, Robert, 1941-; Subject Term: ETHICAL intuitionism; Subject Term: ; Number of Pages: 16p; ; Document Type: Article; L3 - 10.1080/15027570.2013.869897 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=93799007&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Sanders, David M. AU - Schuster, Anthony L. AU - Wesley McCardle, P. AU - Strey, Otto F. AU - Blankenship, Terry L. AU - Teel, Pete D. T1 - Ixodid ticks associated with feral swine in Texas. JO - Journal of Vector Ecology JF - Journal of Vector Ecology Y1 - 2013/12// VL - 38 IS - 2 M3 - Article SP - 361 EP - 373 PB - Society for Vector Ecology SN - 10811710 AB - Ixodid ticks were collected from feral swine in eight Texas ecoregions from 2008-2011. Sixty-two percent of 806 feral swine were infested with one or more of the following species: Amblyomma americanum, A. cajennense, A. maculatum, Dermacentor albipictus, D. halli, D. variabilis, and Ixodes scapularis. Juvenile and adult feral swine of both sexes were found to serve as host to ixodid ticks. Longitudinal surveys of feral swine at four geographic locations show persistent year-round tick infestations of all gender-age classes for tick species common to their respective geographic locations and ecoregions. Amblyomma americanum, A. cajennense, A. maculatum and D. variabilis were collected from 66% of feral swine harvested through an abatement program in seven ecoregions from March to October in 2009. These results indicate westward geographic expansion of D. variabilis. Summary results show feral swine are competent hosts for ixodid species responsible for the transmission of pathogens and diminished well-being in livestock, wildlife, and humans. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Vector Ecology is the property of Society for Vector Ecology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Ticks KW - Ticks as carriers of disease KW - Feral swine KW - Amblyomma americanum KW - Amblyomma KW - Winter tick KW - Ixodes scapularis KW - feral swine KW - Ixodidae KW - pigs KW - Ticks N1 - Accession Number: 91641203; Sanders, David M. 1; Schuster, Anthony L. 2; Wesley McCardle, P. 2; Strey, Otto F. 3; Blankenship, Terry L. 4; Teel, Pete D. 3; Email Address: pteel@tamu.edu; Affiliations: 1: U.S. Air Force Research Laboratory/USAFSAM, Wright-Patterson AFB, OH 45433-7408, U.S.A.; 2: U.S. Army Medical Component, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand; 3: Department of Entomology, Texas A&M AgriLife Research, Texas A&M University, College Station, TX 77843-2475, U.S.A.; 4: Welder Wildlife Foundation, P.O. Box 1400, Sinton, TX 78387-1400, U.S.A.; Issue Info: Dec2013, Vol. 38 Issue 2, p361; Thesaurus Term: RESEARCH; Subject Term: Ticks; Subject Term: Ticks as carriers of disease; Subject Term: Feral swine; Subject Term: Amblyomma americanum; Subject Term: Amblyomma; Subject Term: Winter tick; Subject Term: Ixodes scapularis; Author-Supplied Keyword: feral swine; Author-Supplied Keyword: Ixodidae; Author-Supplied Keyword: pigs; Author-Supplied Keyword: Ticks; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=91641203&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Bernardoni, Brandon J. T1 - Using Social Network Analysis to Inform Stabilization Efforts. JO - Military Operations Research JF - Military Operations Research J1 - Military Operations Research PY - 2013/12// Y1 - 2013/12// VL - 18 IS - 4 M3 - Article SP - 37 EP - 60 SN - 10825983 AB - The article presents a study which examines the use of social network analysis (SNA) in informing stabilization activities in failed and failing states. The mechanism of informing stabilization activities based on the SNA structural holes theory is outlined. The influence of the SNA structural holes on the security, stabilization, transition and reconstruction (SSTRO) operations of a government is highlighted. KW - SOCIAL networks KW - NATION building KW - FAILED states KW - PEACEBUILDING KW - NATIONAL security N1 - Accession Number: 93745018; Source Information: 2013, Vol. 18 Issue 4, p37; Subject Term: SOCIAL networks; Subject Term: NATION building; Subject Term: FAILED states; Subject Term: PEACEBUILDING; Subject Term: NATIONAL security; Subject Term: ; Number of Pages: 24p; ; Document Type: Article; L3 - 10.5711/1082598318437 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=93745018&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR T1 - Recovery. AU - Greener, Trent AU - Pinske, Kim AU - Petersen, Andrew JO - Strength & Conditioning Journal (Lippincott Williams & Wilkins) JF - Strength & Conditioning Journal (Lippincott Williams & Wilkins) Y1 - 2013/12// VL - 35 IS - 6 SP - 86 EP - 88 SN - 15241602 N1 - Accession Number: 93359354; Author: Greener, Trent: 1 Author: Pinske, Kim: 2 Author: Petersen, Andrew: 3 ; Author Affiliation: 1 Athletic Department, University of Wyoming, Laramie, Wyoming: 2 Athletic Department, United States Air Force Academy, Colorado Springs, Colorado: 3 Athletic Department, Humboldt State University, Arcata, California; No. of Pages: 3; Language: English; Publication Type: Article; Update Code: 20131228 N2 - The article observes that the demands on collegiate athletes are significant which include training and improved athletic performance, classroom demands and time for a social life. It suggests that it is imperative for strength and conditioning (S&C) coaches to include recovery program that promotes recovery from training. It also presents how several S&C coaches build recovery into the training programs they provide their athletes. KW - *COLLEGE athletes KW - *STRENGTH training KW - *PHYSICAL training & conditioning KW - *ATHLETES KW - *COACHES (Athletics) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=93359354&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 2013-32706-001 AN - 2013-32706-001 AU - Saxby, Dyani J. AU - Matthews, Gerald AU - Warm, Joel S. AU - Hitchcock, Edward M. AU - Neubauer, Catherine T1 - Active and passive fatigue in simulated driving: Discriminating styles of workload regulation and their safety impacts. JF - Journal of Experimental Psychology: Applied JO - Journal of Experimental Psychology: Applied JA - J Exp Psychol Appl Y1 - 2013/12// VL - 19 IS - 4 SP - 287 EP - 300 CY - US PB - American Psychological Association SN - 1076-898X SN - 1939-2192 AD - Matthews, Gerald, Institute for Simulation and Training, ACTIVE Lab, University of Central Florida, 3100 Technology Pkwy., Orlando, FL, US, 32826 N1 - Accession Number: 2013-32706-001. PMID: 24041288 Partial author list: First Author & Affiliation: Saxby, Dyani J.; Department of Psychology, University of Cincinnati, Cincinnati, OH, US. Release Date: 20130916. Correction Date: 20151123. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Drivers; Driving Behavior; Fatigue; Safety. Minor Descriptor: Automation. Classification: Attention (2346). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: NASA-Task Load Index; Coping Inventory for Task Situations; Appraisal of Life Events Scale DOI: 10.1037/t25745-000; Dundee Stress State Questionnaire DOI: 10.1037/t27031-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 14. Issue Publication Date: Dec, 2013. Publication History: First Posted Date: Sep 16, 2013; Accepted Date: Jul 16, 2013; Revised Date: Jul 1, 2013; First Submitted Date: Dec 1, 2012. Copyright Statement: American Psychological Association. 2013. AB - Despite the known dangers of driver fatigue, it is a difficult construct to study empirically. Different forms of task-induced fatigue may differ in their effects on driver performance and safety. Desmond and Hancock (2001) defined active and passive fatigue states that reflect different styles of workload regulation. In 2 driving simulator studies we investigated the multidimensional subjective states and safety outcomes associated with active and passive fatigue. Wind gusts were used to induce active fatigue, and full vehicle automation to induce passive fatigue. Drive duration was independently manipulated to track the development of fatigue states over time. Participants were undergraduate students. Study 1 (N = 108) focused on subjective response and associated cognitive stress processes, while Study 2 (N = 168) tested fatigue effects on vehicle control and alertness. In both studies the 2 fatigue manipulations produced different patterns of subjective response reflecting different styles of workload regulation, appraisal, and coping. Active fatigue was associated with distress, overload, and heightened coping efforts, whereas passive fatigue corresponded to large-magnitude declines in task engagement, cognitive underload, and reduced challenge appraisal. Study 2 showed that only passive fatigue reduced alertness, operationalized as speed of braking and steering responses to an emergency event. Passive fatigue also increased crash probability, but did not affect a measure of vehicle control. Findings support theories that see fatigue as an outcome of strategies for managing workload. The distinction between active and passive fatigue is important for assessment of fatigue and for evaluating automated driving systems which may induce dangerous levels of passive fatigue. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - automation KW - driving scenarios KW - fatigue KW - performance KW - simulated driving KW - active fatigue KW - passive fatigue KW - 2013 KW - Drivers KW - Driving Behavior KW - Fatigue KW - Safety KW - Automation KW - 2013 DO - 10.1037/a0034386 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-32706-001&site=ehost-live&scope=site UR - gmatthews@ist.ucf.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-43049-012 AN - 2013-43049-012 AU - McKinley, R. Andy AU - McIntire, Lindsey AU - Bridges, Nathaniel AU - Goodyear, Charles AU - Bangera, Nitin B. AU - Weisend, Michael P. T1 - Acceleration of image analyst training with transcranial direct current stimulation. JF - Behavioral Neuroscience JO - Behavioral Neuroscience JA - Behav Neurosci Y1 - 2013/12// VL - 127 IS - 6 SP - 936 EP - 946 CY - US PB - American Psychological Association SN - 0735-7044 SN - 1939-0084 AD - McKinley, R. Andy, Applied Neuroscience Branch, 2947 5th Street, BLDG 20840, Room E200.05, Wright-Patterson AFB, OH, US N1 - Accession Number: 2013-43049-012. PMID: 24341718 Partial author list: First Author & Affiliation: McKinley, R. Andy; Air Force Research Laboratory, Applied Neuroscience Branch, Wright-Patterson AFB, OH, US. Release Date: 20131216. Correction Date: 20150126. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Imagery; Military Personnel; Training; Transcranial Magnetic Stimulation. Minor Descriptor: Cognitive Processes; Learning. Classification: Neuropsychology & Neurology (2520); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Synthetic Aperture Radar Target Learning Task. Methodology: Brain Imaging; Empirical Study; Quantitative Study. References Available: Y. Page Count: 11. Issue Publication Date: Dec, 2013. Publication History: Accepted Date: Oct 7, 2013; Revised Date: Oct 4, 2013; First Submitted Date: Aug 12, 2013. AB - [Correction Notice: An Erratum for this article was reported in Vol 129(1) of Behavioral Neuroscience (see record [rid]2015-03147-003[/rid]). Nitin B. Bangera was omitted as a coauthor. The online version of this article has been corrected.] Humans today are routinely and increasingly presented with vast quantities of data that challenge their capacity for efficient processing. To restore the balance between man and machine, it is worthwhile to explore new methods for enhancing or accelerating this capacity. This study was designed to investigate the efficacy of transcranial DC stimulation (tDCS) to reduce training time and increase proficiency in spatial recognition using a simulated synthetic aperture radar (SAR) task. Twenty-seven Air Force active duty members volunteered to participate in the study. Each participant was assigned to 1 of 3 stimulation groups and received two, 90-min training sessions on a target search and identification task using SAR imagery followed by a test. The tDCS anode was applied to site F10 according to the 10–20 electroencephalographic electrode convention while the cathode was placed on the contralateral bicep. Group 1 received anodal tDCS at 2 mA for 30 min in the first training session and sham tDCS in the second session. Group 2 received the stimulation conditions in the opposite order. Group 3 did not receive stimulation at all. Results showed that participants receiving training plus tDCS attained visual search accuracies ∼25% higher than those provided with sham stimulation or no stimulation. However, a corresponding performance improvement was not found in the first training session for the change detection portion of the task. This indicates that experience with the imagery is important in the tDCS-elicited performance improvements in change detection. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cognitive performance KW - learning KW - military KW - noninvasive brain stimulation KW - tDCS KW - transcranial direct current stimulation KW - image analyst training KW - 2013 KW - Imagery KW - Military Personnel KW - Training KW - Transcranial Magnetic Stimulation KW - Cognitive Processes KW - Learning KW - 2013 U1 - Sponsor: Defense Advanced Research Projects Agency, US. Recipients: No recipient indicated U1 - Sponsor: Wright-Patterson AFB, 711th Human Performance Wing, US. Recipients: No recipient indicated DO - 10.1037/a0034975 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-43049-012&site=ehost-live&scope=site UR - andy.mckinley@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-44922-002 AN - 2013-44922-002 AU - Finomore, Victor S. Jr. AU - Shaw, Tyler H. AU - Warm, Joel S. AU - Matthews, Gerald AU - Boles, David B. T1 - Viewing the workload of vigilance through the lenses of the NASA-TLX and the MRQ. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2013/12// VL - 55 IS - 6 SP - 1044 EP - 1063 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Finomore, Victor S. Jr., Air Force Research Laboratory, 2610 Seventh St., Wright-Patterson, OH, US, 45433 N1 - Accession Number: 2013-44922-002. PMID: 24745198 Partial author list: First Author & Affiliation: Finomore, Victor S. Jr.; Warfighter Interface Division, 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, Wright-Patterson, OH, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20140203. Correction Date: 20150720. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Processes; Psychometrics; Test Reliability; Test Validity; Visual Perception. Minor Descriptor: Questionnaires; Task Analysis. Classification: Tests & Testing (2220); Human Experimental Psychology (2300). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: NASA Task Load Index; Multiple Resources Questionnaire DOI: 10.1037/t21877-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 20. Issue Publication Date: Dec, 2013. Publication History: Accepted Date: Feb 27, 2013; First Submitted Date: Jun 25, 2012. AB - Objective: The aim of this study was to compare the effectiveness of a new index of perceived mental workload, the Multiple Resource Questionnaire (MRQ), with the standard measure of workload used in the study of vigilance, the NASA Task Load Index (NASA-TLX). Background: The NASA-TLX has been used extensively to demonstrate that vigilance tasks impose a high level of workload on observers. However, this instrument does not specify the information-processing resources needed for task performance. The MRQ offers a tool to measure the workload associated with vigilance assignments in which such resources can be identified. Method: Two experiments were performed in which factors known to influence task demand were varied. Included were the detection of stimulus presence or absence, detecting critical signals by means of successive-type (absolute judgment) and simultaneous-type (comparative judgment) discriminations, and operating under multitask vs. single-task conditions. Results: The MRQ paralleled the NASA-TLX in showing that vigilance tasks generally induce high levels of workload and that workload scores are greater in detecting stimulus absence than presence and in making successive as compared to simultaneous-type discriminations. Additionally, the MRQ was more effective than the NASA-TLX in reflecting higher workload in the context of multitask than in single-task conditions. The resource profiles obtained with MRQ fit well with the nature of the vigilance tasks employed, testifying to the scale’s content validity. Conclusion: The MRQ may be a meaningful addition to the NASA-TLX for measuring the workload of vigilance assignments. Application: By uncovering knowledge representation associated with different tasks, the MRQ may aid in designing operational vigilance displays. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Multiple Resource Questionnaire KW - NASA Task Load Index KW - information-processing KW - test reliability KW - test validity KW - psychometrics KW - visual processing KW - 2013 KW - Cognitive Processes KW - Psychometrics KW - Test Reliability KW - Test Validity KW - Visual Perception KW - Questionnaires KW - Task Analysis KW - 2013 DO - 10.1177/0018720813484498 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-44922-002&site=ehost-live&scope=site UR - victor.finomore@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-37882-013 AN - 2013-37882-013 AU - Thompson, Garth John AU - Magnuson, Matthew Evan AU - Merritt, Michael Donelyn AU - Schwarb, Hillary AU - Pan, Wen‐Ju AU - McKinley, Andrew AU - Tripp, Lloyd D. AU - Schumacher, Eric H. AU - Keilholz, Shella Dawn T1 - Short‐time windows of correlation between large‐scale functional brain networks predict vigilance intraindividually and interindividually. JF - Human Brain Mapping JO - Human Brain Mapping JA - Hum Brain Mapp Y1 - 2013/12// VL - 34 IS - 12 SP - 3280 EP - 3298 CY - US PB - John Wiley & Sons SN - 1065-9471 SN - 1097-0193 AD - Keilholz, Shella Dawn, Emory University, 101 Woodruff Circle WMB 2001, Atlanta, GA, US, 30322 N1 - Accession Number: 2013-37882-013. PMID: 22736565 Partial author list: First Author & Affiliation: Thompson, Garth John; Georgia Institute of Technology, Atlanta, GA, US. Release Date: 20131202. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Brain; Biological Neural Networks. Minor Descriptor: Behavior; Functional Analysis; Vigilance. Classification: Neuropsychology & Neurology (2520). Population: Human (10); Male (30); Female (40). Location: Georgia. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Tests & Measures: Psychomotor Vigilance Task; Flanker Task. Methodology: Brain Imaging; Empirical Study; Quantitative Study. References Available: Y. Page Count: 19. Issue Publication Date: Dec, 2013. Publication History: First Posted Date: Jun 27, 2012; Accepted Date: May 14, 2012; Revised Date: Mar 22, 2012; First Submitted Date: Jun 24, 2011. Copyright Statement: Wiley Periodicals, Inc. 2012. AB - A better understanding of how behavioral performance emerges from interacting brain systems may come from analysis of functional networks using functional magnetic resonance imaging. Recent studies comparing such networks with human behavior have begun to identify these relationships, but few have used a time scale small enough to relate their findings to variation within a single individual's behavior. In the present experiment we examined the relationship between a psychomotor vigilance task and the interacting default mode and task positive networks. Two time‐localized comparative metrics were calculated: difference between the two networks' signals at various time points around each instance of the stimulus (peristimulus times) and correlation within a 12.3‐s window centered at each peristimulus time. Correlation between networks was also calculated within entire resting‐state functional imaging runs from the same individuals. These metrics were compared with response speed on both an intraindividual and an interindividual basis. In most cases, a greater difference or more anticorrelation between networks was significantly related to faster performance. While interindividual analysis showed this result generally, using intraindividual analysis it was isolated to peristimulus times 4 to 8 s before the detected target. Within that peristimulus time span, the effect was stronger for individuals who tended to have faster response times. These results suggest that the relationship between functional networks and behavior can be better understood by using shorter time windows and also by considering both intraindividual and interindividual variability. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - brain networks KW - vigilance KW - human behavior KW - functional analysis KW - 2013 KW - Brain KW - Biological Neural Networks KW - Behavior KW - Functional Analysis KW - Vigilance KW - 2013 U1 - Sponsor: Georgia Institute of Technology, Bio-nano-enabled Inorganic/Organic Nanostructures and Improved Cognition (BIONIC), Air Force Center of Excellence, US. Recipients: No recipient indicated DO - 10.1002/hbm.22140 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-37882-013&site=ehost-live&scope=site UR - shella.keilholz@bme.gatech.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Rhodes, Albert N. AU - Fulthorpe, Roberta R. AU - Tiedje, James M. T1 - Probing the Functional Diversity of Global Pristine Soil Communities with 3-Chlorobenzoate Reveals that Communities of Generalists Dominate Catabolic Transformation. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2013/11/15/ VL - 79 IS - 22 M3 - Article SP - 6932 EP - 6940 SN - 00992240 AB - Understanding of functional diversity of microbial populations has lagged description of their molecular diversity. Differences in substrate specificity, kinetics, products, and regulation can dramatically influence phenotypic variation among closely related strains, features that are missed when the strains studied are the fastest-growing and most easily isolated from serial enrichments. To investigate the broader bacterial diversity underlying degradation of anthropogenic chemicals in nature, we studied the 3-chlorobenzoate (3-CBA) degradation rate in a collection of aerobic 3-CBA degraders previously isolated from undisturbed soils in two representative ecosystems: (i) Mediterranean sclerophyllous woodlands in California, Chile, South Africa, and Australia and (ii) boreal forests in Canada and Russia. The majority of isolates degraded 3-CBA slowly and did not completely mineralize 1.0mM3-CBA within 1 week. Those with intermediate degradation rates had incomplete degradation pathways and produced colored intermediates indicative of chlorocatechol, a product likely metabolized by other members of the community. About 10% of the isolates grew rapidly and mineralized greater than 90% of the 3-CBA, but because of population heterogeneity in soil, they are likely not large contributors to a soil's total transformation capacity. This suggests that xenobiotic degradation in nature is carried out by a community of cometabolic generalists and not by the efficient specialists that have been traditionally studied in the laboratory. A subset of 58 genotypically distinct strains able to degrade>80% of the 3-CBA was examined for their catabolic versatility using 45 different compounds: mono- and dichlorinated benzoates, phenols, anilines, toluenes, nitrobenzenes, chlorobenzenes, and 2,4-dichlorophenoxyacetic acid. The isolates degraded from 2 to more than 30 compounds with a median of 7, but there was no correlation to habitat of isolation or 3-CBA activity. However, these findings were indicative of finer-scale functional diversity. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Chlorobenzoates KW - Bacterial diversity KW - Anthropogenic soils KW - Taigas KW - Xenobiotics KW - Aerobic bacteria KW - Chlorocatechols N1 - Accession Number: 91508203; Rhodes, Albert N. 1; Fulthorpe, Roberta R. 2; Tiedje, James M. 3; Email Address: tiedjej@msu.edu; Affiliations: 1: Air Force Research Laboratory, Airbase Technologies Division, Tyndall Air Force Base, Florida, USA; 2: Physical Sciences Division, University of Toronto, Scarborough, Ontario, Canada; 3: Department of Plant, Soil and Microbial Sciences and Center for Microbial Ecology, Michigan State University, East Lansing, Michigan, USA; Issue Info: Nov2013, Vol. 79 Issue 22, p6932; Thesaurus Term: Chlorobenzoates; Thesaurus Term: Bacterial diversity; Thesaurus Term: Anthropogenic soils; Thesaurus Term: Taigas; Thesaurus Term: Xenobiotics; Thesaurus Term: Aerobic bacteria; Subject Term: Chlorocatechols; Number of Pages: 9p; Document Type: Article L3 - 10.1128/AEM.01905-13 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=91508203&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Seaver, Mark AU - Chattopadhyay, Aditi AU - Papandreou-Suppapola, Antonia AU - Kim, Seung B AU - Kovvali, Narayan AU - Farrar, Charles R AU - Triplett, Matt H AU - Derriso, Mark M T1 - Workshop on transitioning structural health monitoring technology to military platforms. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2013/11/15/ VL - 24 IS - 17 M3 - Article SP - 2063 EP - 2073 SN - 1045389X AB - Interest in structural health monitoring/management is attracting lots of attention across a spectrum that ranges from sensor developers to end users. The US military, in particular, is making a concerted effort to implement condition-based maintenance as a means of reducing the life cycle costs and improving availability of various weapon platforms. Despite this effort, the majority of installed health monitoring systems are limited to rotating machinery such as engines, transmissions, and other gear boxes. The goal of this workshop was to bring together representatives from military, industry, and academia covering the spectrum from hardware developers to end users and platform managers and have them discuss issues that must be addressed as structural health monitoring systems mature to the point that managers will implement them. This article describes those discussions and highlights important issues that need to be addressed as structural health monitoring systems make the transition from laboratory scale demonstrations to real-world use. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MANAGEMENT KW - ARTIFICIAL intelligence KW - LIFE cycle costing KW - COMPUTER input-output equipment KW - MEDICAL technology KW - EMBEDDED computer systems KW - ARMED Forces KW - UNITED States KW - control KW - embedded intelligence KW - Structural health monitoring N1 - Accession Number: 91256218; Seaver, Mark 1; Chattopadhyay, Aditi 2; Papandreou-Suppapola, Antonia 3; Kim, Seung B 4; Kovvali, Narayan 3; Farrar, Charles R 5; Triplett, Matt H 6; Derriso, Mark M 7; Affiliations: 1: Code 5673, Naval Research Laboratory, Washington, DC, 20375, USA; 2: School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ, 85287, USA; 3: School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, AZ, 85287, USA; 4: School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ, 85287, USA, United Technologies Research Center, East Hartford, CT, 06118, USA; 5: The Engineering Institute, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA; 6: AMSRD-AMR-PS-AM, Redstone Arsenal, AL, 35898, USA; 7: Air Vehicles Directorate, Air Force Research Laboratory, Wright–Patterson Air Force Base, OH, 45433, USA; Issue Info: Nov2013, Vol. 24 Issue 17, p2063; Thesaurus Term: MANAGEMENT; Thesaurus Term: ARTIFICIAL intelligence; Thesaurus Term: LIFE cycle costing; Thesaurus Term: COMPUTER input-output equipment; Subject Term: MEDICAL technology; Subject Term: EMBEDDED computer systems; Subject Term: ARMED Forces; Subject: UNITED States; Author-Supplied Keyword: control; Author-Supplied Keyword: embedded intelligence; Author-Supplied Keyword: Structural health monitoring; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 334111 Electronic Computer Manufacturing; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; Number of Pages: 11p; Document Type: Article; Full Text Word Count: 8044 L3 - 10.1177/1045389X12440753 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=91256218&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Soine, Andrew AU - Harker, James AU - Heminger, Alan R. AU - Scherrer, Joseph H. T1 - Deployed Communications in an Austere Environment A Delphi Study. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2013/11//Nov/Dec2013 Y1 - 2013/11//Nov/Dec2013 VL - 27 IS - 6 M3 - Article SP - 82 EP - 94 PB - Superintendent of Documents SN - 1555385X AB - The article presents a study commissioned by the U.S. Air Force's 689th Combat Communications Wing to forecast the future of mobile information and communications technology (ICT) in military operations in austere environments. According to the Delphi technology, the technologies it describes may be in place within the next 10 to 20 years. KW - COMMUNICATION & technology KW - UNITED States. Air Force KW - COMMAND of troops KW - SPECIAL operations (Military science) KW - UNITED States N1 - Accession Number: 91985863; Source Information: Nov/Dec2013, Vol. 27 Issue 6, p82; Subject Term: COMMUNICATION & technology; Subject Term: UNITED States. Air Force; Subject Term: COMMAND of troops; Subject Term: SPECIAL operations (Military science); Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 13p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=91985863&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Titus, James T1 - The Art of Air Power: Sun Tzu Revisited. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2013/11//Nov/Dec2013 Y1 - 2013/11//Nov/Dec2013 VL - 27 IS - 6 M3 - Book Review SP - 135 EP - 137 PB - Superintendent of Documents SN - 1555385X AB - The article reviews the book "Art of Air Power: Sun Tzu Revisited," by Sanu Kainikara. KW - ART of Air Power: Sun Tzu Revisited, The (Book) KW - KAINIKARA, Sanu KW - AIR power (Military science) KW - NONFICTION N1 - Accession Number: 91985871; Source Information: Nov/Dec2013, Vol. 27 Issue 6, p135; Subject Term: ART of Air Power: Sun Tzu Revisited, The (Book); Subject Term: KAINIKARA, Sanu; Subject Term: AIR power (Military science); Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=91985871&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Pruitt, Kristopher A. AU - Braun, Robert J. AU - Newman, Alexandra M. T1 - Establishing conditions for the economic viability of fuel cell-based, combined heat and power distributed generation systems. JO - Applied Energy JF - Applied Energy Y1 - 2013/11// VL - 111 M3 - Article SP - 904 EP - 920 SN - 03062619 AB - Highlights: [•] We derive conditions for the economic viability of a distributed generation technology. [•] We demonstrate these conditions for fuel cell-based systems in various commercial building scenarios. [•] Results indicate that building, market, and configuration significantly impact economic viability. [•] Impact of fuel cell efficiency and carbon tax on emissions on viability are examined. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Energy is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Cogeneration of electric power & heat KW - Electric power production KW - Buildings -- Energy conservation KW - Carbon taxes KW - Emissions (Air pollution) KW - Fuel cells -- Economic aspects KW - Carbon tax KW - Combined heat and power KW - Distributed generation KW - Economic viability KW - Fuel cell KW - Mixed integer programming N1 - Accession Number: 90011904; Pruitt, Kristopher A. 1; Braun, Robert J. 2; Email Address: rbraun@mines.edu; Newman, Alexandra M. 3; Affiliations: 1: Department of Mathematical Sciences, United States Air Force Academy, Colorado Springs, CO 80840, United States; 2: Department of Mechanical Engineering, Colorado School of Mines, Golden, CO 80401, United States; 3: Division of Economics and Business, Colorado School of Mines, Golden, CO 80401, United States; Issue Info: Nov2013, Vol. 111, p904; Thesaurus Term: Cogeneration of electric power & heat; Thesaurus Term: Electric power production; Thesaurus Term: Buildings -- Energy conservation; Thesaurus Term: Carbon taxes; Thesaurus Term: Emissions (Air pollution); Subject Term: Fuel cells -- Economic aspects; Author-Supplied Keyword: Carbon tax; Author-Supplied Keyword: Combined heat and power; Author-Supplied Keyword: Distributed generation; Author-Supplied Keyword: Economic viability; Author-Supplied Keyword: Fuel cell; Author-Supplied Keyword: Mixed integer programming; NAICS/Industry Codes: 221112 Fossil Fuel Electric Power Generation; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.apenergy.2013.06.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=90011904&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Zhang, Jie AU - Prater, Edmund L. AU - Lipkin, Ilya T1 - Feedback reviews and bidding in online auctions: An integrated hedonic regression and fuzzy logic expert system approach. JO - Decision Support Systems JF - Decision Support Systems Y1 - 2013/11// VL - 55 IS - 4 M3 - Article SP - 894 EP - 902 SN - 01679236 AB - Abstract: In online auctions, user-generated feedback reviews provide first-hand information on the trustworthiness of transaction partners to the community. To examine how the feedback reviews are taken into account of the buyers' bidding decisions and thus affect the final winning price of an auction, we thoroughly examine how buyers mentally interpret the seller's reviews and adjust the bids accordingly. With ample bidding results data from a popular auction website eBay.com, this paper adopts an integrated approach of Fuzzy Logic Expert System (FLES) model and a statistical hedonic regression model to examine the research question. In particular, we use the hedonic regression approach to select key variables, which are then entered into a FLES analysis to generate knowledge base regarding the relationships between variables such as item characteristics, auction characteristics and review scores, and the final winning price. This integrated approach combines the advantages of both methods, and also overcomes their own limitations. In addition, we also present the insights gained from bidding behaviors utilizing each of the approaches. [Copyright &y& Elsevier] AB - Copyright of Decision Support Systems is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXPERT systems (Computer science) KW - REGRESSION analysis KW - INTERNET auctions KW - COMMERCIAL products -- Reviews KW - BIDDING strategies KW - FUZZY logic KW - Bidding behavior KW - Fuzzy logic KW - Hedonic regression KW - Online auction N1 - Accession Number: 90203397; Zhang, Jie 1; Email Address: jiezhang@uta.edu; Prater, Edmund L. 1; Email Address: eprater@uta.edu; Lipkin, Ilya 2; Affiliations: 1: College of Business Administration, University of Texas at Arlington, Box 19437, Arlington, TX 76019, USA; 2: Predator/Reaper Simulator program, United States Air Force, Wright Patterson AFB, Dayton, OH 45433, USA; Issue Info: Nov2013, Vol. 55 Issue 4, p894; Thesaurus Term: EXPERT systems (Computer science); Thesaurus Term: REGRESSION analysis; Thesaurus Term: INTERNET auctions; Thesaurus Term: COMMERCIAL products -- Reviews; Thesaurus Term: BIDDING strategies; Subject Term: FUZZY logic; Author-Supplied Keyword: Bidding behavior; Author-Supplied Keyword: Fuzzy logic; Author-Supplied Keyword: Hedonic regression; Author-Supplied Keyword: Online auction; NAICS/Industry Codes: 454110 Electronic shopping and mail-order houses; NAICS/Industry Codes: 454112 Electronic Auctions; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.dss.2012.12.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=90203397&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Zhao, Yuan AU - Xu, Rui AU - Zhang, Xuanru AU - Hu, Xiang AU - Knize, Randall J. AU - Lu, Yalin T1 - Simulation of smart windows in the ZnO/VO2/ZnS sandwiched structure with improved thermochromic properties. JO - Energy & Buildings JF - Energy & Buildings Y1 - 2013/11// VL - 66 M3 - Article SP - 545 EP - 552 SN - 03787788 AB - Highlights: [•] New ZnO/VO2/ZnS smart window was modeled with concurrent improvement on T lum and ΔT sol. [•] High ΔT sol of 13.01% was predicted for 3/4-1/4-3/4 waved ZnO/VO2/ZnS films. [•] High T lum of 63.24% and 57.39% were modeled in semiconducting and metallic states. [ABSTRACT FROM AUTHOR] AB - Copyright of Energy & Buildings is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Electrochromic windows KW - Simulation methods & models KW - Zinc compounds KW - Buildings -- Energy conservation KW - Sandwich construction (Materials) KW - Thermochromism KW - Antireflection KW - Sandwich KW - Smart window KW - Thin film KW - Transparent material KW - Vanadium dioxide N1 - Accession Number: 90523774; Zhao, Yuan 1; Xu, Rui 2; Zhang, Xuanru 3; Hu, Xiang 3; Knize, Randall J. 4; Lu, Yalin 1,3,4; Email Address: yllu@ustc.edu.cn; Affiliations: 1: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, PR China; 2: Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, PR China; 3: Advanced Applied Research Center, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Anhui 230026, PR China; 4: Laser Optics Research Center, Physics Department, United States Air Force Academy, CO 80840, USA; Issue Info: Nov2013, Vol. 66, p545; Thesaurus Term: Electrochromic windows; Thesaurus Term: Simulation methods & models; Thesaurus Term: Zinc compounds; Thesaurus Term: Buildings -- Energy conservation; Subject Term: Sandwich construction (Materials); Subject Term: Thermochromism; Author-Supplied Keyword: Antireflection; Author-Supplied Keyword: Sandwich; Author-Supplied Keyword: Smart window; Author-Supplied Keyword: Thin film; Author-Supplied Keyword: Transparent material; Author-Supplied Keyword: Vanadium dioxide; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.enbuild.2013.07.071 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=90523774&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Anderson, Richard H. AU - Farrar, David B. AU - Zodrow, Jean M. T1 - Terrestrial Metals Bioavailability: A Comprehensive Review and Literature-Derived Decision Rule for Ecological Risk Assessment. JO - Human & Ecological Risk Assessment JF - Human & Ecological Risk Assessment Y1 - 2013/11// VL - 19 IS - 6 M3 - Article SP - 1488 EP - 1513 SN - 10807039 AB - Interstudy variation among bioavailability studies is a primary deterrent to a universal methodology to assess metals bioavailability to soil-dwelling organisms and is largely the result of specific experimental conditions unique to independent studies. Accordingly, two datasets were established from relevant literature; one includes data from studies related to bioaccumulation (total obs = 520), while the other contains data from studies related to toxicity (total obs = 1264). Experimental factors that affected toxicity and bioaccumulation independent of the effect of soil chemical/physical properties were statistically apportioned from the variation attributed to soil chemical/physical properties for both datasets using a linear mixed model. Residual bioaccumulation data were then used to develop a non-parametric regression tree whereby bootstrap and cross-validation techniques were used to internally validate the resulting decision rule. A similar approach was employed with the toxicity dataset as an independent external validation. A validated decision rule is presented as a quantitative assessment tool that characterizes typical aerobic soils in terms of their potential to sequester common divalent cationic metal contaminants and mitigate their bioavailability to soil-dwelling biota. [ABSTRACT FROM AUTHOR] AB - Copyright of Human & Ecological Risk Assessment is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Metals KW - Bioavailability KW - Ecological risk assessment KW - Bioaccumulation KW - Toxicity testing KW - bioavailability KW - decision rule KW - ecological risk assessment. KW - metals N1 - Accession Number: 89077051; Anderson, Richard H. 1; Email Address: richard.anderson.55@us.af.mil; Farrar, David B. 2; Zodrow, Jean M. 3,4; Affiliations: 1: Air Force Civil Engineer Center (AFCEC), Department of the U.S. Air Force , Lackland AFB , TX , USA; 2: National Center for Environmental Assessment (NCEA), U.S. Environmental Protection Agency , Cincinnati , OH , USA; 3: Superfund Division, Region 10, U.S. Environmental Protection Agency , Seattle , WA , USA; 4: Arcadia U.S., Inc. , Lakewood , CO , USA; Issue Info: Nov2013, Vol. 19 Issue 6, p1488; Thesaurus Term: Metals; Thesaurus Term: Bioavailability; Thesaurus Term: Ecological risk assessment; Thesaurus Term: Bioaccumulation; Thesaurus Term: Toxicity testing; Author-Supplied Keyword: bioavailability; Author-Supplied Keyword: decision rule; Author-Supplied Keyword: ecological risk assessment.; Author-Supplied Keyword: metals; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 26p; Document Type: Article L3 - 10.1080/10807039.2012.708269 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=89077051&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Dogan, Atilla AU - Blake, William AU - Haag, Christian T1 - Bow Wave Effect in Aerial Refueling: Computational Analysis and Modeling. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2013/11//Nov-Dec2013 Y1 - 2013/11//Nov-Dec2013 VL - 50 IS - 6 M3 - Article SP - 1856 EP - 1868 SN - 00218669 AB - Mechanisms contributing to the "bow wave" effect of a receiver on a tanker are investigated, and a modeling method for dynamic simulation is developed. Vortex lattice and Cart3D codes are used to calculate the aerodynamic forces and moments for a C-141B behind a KC-135. The vortex lattice code significantly underpredicts the bow wave effect, whereas the Cart3D code shows good agreement with available flight data. The modeling method uses stream functions for inviscid flow around solid bodies. The flowfield induced by the presence of aircraft bodies is superimposed on the flowfield generated by horseshoe vortices. The resultant flowfield is approximated by the effective uniform translational and rotational velocity components, which are used in the buildup equations for the aerodynamic force and moment coefficients of both tanker and receiver aircraft. This method applied to a flying wing behind a KC135 shows good agreement with Cart3D results. It is concluded that the major contribution to the "bow wave" effect is the effect of the displacement of air due to the volume of the receiver and not upwash from the bound vortex due to the lift of the receiver. This disagrees with earlier studies that did not have the benefit of flight data to use as a benchmark. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMIC load -- Research KW - DYNAMIC simulation (Engineering) -- Research KW - AIRPLANES -- Refueling KW - VORTEX lattice method -- Research KW - INVISCID flow -- Research N1 - Accession Number: 93368429; Source Information: Nov-Dec2013, Vol. 50 Issue 6, p1856; Subject Term: AERODYNAMIC load -- Research; Subject Term: DYNAMIC simulation (Engineering) -- Research; Subject Term: AIRPLANES -- Refueling; Subject Term: VORTEX lattice method -- Research; Subject Term: INVISCID flow -- Research; Subject Term: ; Number of Pages: 13p; ; Document Type: Article; L3 - 0.2514/1.C032165 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=93368429&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ross, Michael1 T1 - Fundamental Orthopedic Management for the Physical Therapist Assistant, 3rd Edition. JO - Medicine & Science in Sports & Exercise JF - Medicine & Science in Sports & Exercise J1 - Medicine & Science in Sports & Exercise PY - 2013/11// Y1 - 2013/11// VL - 45 IS - 11 CP - 11 M3 - Book Review SP - 2204 EP - 2204 SN - 01959131 AB - The article reviews the book "Fundamental Orthopedic Management for the Physical Therapy Assistant," third edition edited by Gary A. Shankman and Robert C. Manske. KW - Orthopedics KW - Physical therapy assistants N1 - Accession Number: 91553590; Authors:Ross, Michael 1; Affiliations: 1: United States Air Force; Subject: Orthopedics; Subject: Physical therapy assistants; Number of Pages: 1/2p; Record Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=91553590&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR ID - 107933241 T1 - Fundamental Orthopedic Management for the Physical Therapist Assistant, 3rd Edition. AU - Ross, Michael Y1 - 2013/11// N1 - Accession Number: 107933241. Language: English. Entry Date: 20131023. Revision Date: 20150712. Publication Type: Journal Article; book review. Journal Subset: Allied Health; Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Physical Therapy; Sports Medicine. NLM UID: 8005433. KW - Orthopedics KW - Physical Therapist Assistants SP - 2204 EP - 2204 JO - Medicine & Science in Sports & Exercise JF - Medicine & Science in Sports & Exercise JA - MED SCI SPORTS EXERC VL - 45 IS - 11 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 0195-9131 AD - United States Air Force UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107933241&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - GEN AU - HARRINGTON, KATHLEEN T1 - Fire and Forget. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2013/11// Y1 - 2013/11// VL - 25 M3 - Short Story SP - 131 EP - 136 PB - US Air Force Academy English Department SN - 10466967 AB - The short story "Fire and Forget," by Kathleen Harrington is presented. KW - FIRE & Forget (Short story) KW - HARRINGTON, Kathleen KW - VETERANS in literature N1 - Accession Number: 90667157; Source Information: 2013, Vol. 25, p131; Subject Term: FIRE & Forget (Short story); Subject Term: HARRINGTON, Kathleen; Subject Term: VETERANS in literature; Subject Term: ; Number of Pages: 6p; ; Document Type: Short Story; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=90667157&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - PIPES, CANDICE L. T1 - Flashes of War: a conversation with Katey Schultz. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2013/11// Y1 - 2013/11// VL - 25 M3 - Interview SP - 139 EP - 147 PB - US Air Force Academy English Department SN - 10466967 AB - An interview with author Katey Schultz is presented. She relates what motivated her to write "Flashes of War," a collection of short stories about war and whether she sees herself as an activist. Schultz discusses the difference between fiction and journalism, and what she thinks fiction can offer in terms of the truth about war. KW - SCHULTZ, Katey -- Interviews KW - WOMEN authors -- Interviews KW - FLASHES of War (Book) KW - WAR in literature KW - JOURNALISM KW - FICTION N1 - Accession Number: 90667158; Source Information: 2013, Vol. 25, p139; Subject Term: SCHULTZ, Katey -- Interviews; Subject Term: WOMEN authors -- Interviews; Subject Term: FLASHES of War (Book); Subject Term: WAR in literature; Subject Term: JOURNALISM; Subject Term: FICTION; Subject Term: ; Number of Pages: 9p; ; Document Type: Interview; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=90667158&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - Lawrence, David T1 - FOBBIT. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2013/11// Y1 - 2013/11// VL - 25 M3 - Interview SP - 160 EP - 170 PB - US Air Force Academy English Department SN - 10466967 AB - An interview with author David Abrams is presented. He talks about his war novel "Fobbit" and comments on critics who say that his novel has similarities with the classic "Catch-22," by Joseph Heller. Abrams cites the reasons behind the phenomenon of the publication of war novels emerging from operations in Iraq and Afghanistan. He also comments on his attack on the West Point in his book. KW - ABRAMS, David -- Interviews KW - AUTHORS -- Interviews KW - FOBBIT (Book) KW - WAR stories KW - BATTLE of West Point, Ga., 1865 N1 - Accession Number: 90667160; Source Information: 2013, Vol. 25, p160; Subject Term: ABRAMS, David -- Interviews; Subject Term: AUTHORS -- Interviews; Subject Term: FOBBIT (Book); Subject Term: WAR stories; Subject Term: BATTLE of West Point, Ga., 1865; Subject Term: ; Number of Pages: 11p; ; Document Type: Interview; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=90667160&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - Sukach, M. K. T1 - WAR REPORTER. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2013/11// Y1 - 2013/11// VL - 25 M3 - Interview SP - 172 EP - 182 PB - US Air Force Academy English Department SN - 10466967 AB - An interview with author Dan O'Brien is presented. He talks about his book "War Reporter," his debut collection of poems based in part on the memoir "Where War Lives," by war journalist Paul Watson. O'Brien comments on the complex anthropological and existential questions addressed in the book. When asked what differentiates poems from photos, he says that poetry is personal and that are so much about consciousness, memory, the internal life of a man who's lived an externalized life. KW - O'BRIEN, Dan -- Interviews KW - AUTHORS -- Interviews KW - WAR Reporter (Book) KW - POETRY (Literary form) KW - WATSON, Paul KW - MEMOIRS N1 - Accession Number: 90667161; Source Information: 2013, Vol. 25, p172; Subject Term: O'BRIEN, Dan -- Interviews; Subject Term: AUTHORS -- Interviews; Subject Term: WAR Reporter (Book); Subject Term: POETRY (Literary form); Subject Term: WATSON, Paul; Subject Term: MEMOIRS; Subject Term: ; Number of Pages: 11p; ; Document Type: Interview; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=90667161&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - SUKACH, M. K. T1 - Eye of the Needle. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2013/11// Y1 - 2013/11// VL - 25 M3 - Poem SP - 262 EP - 262 PB - US Air Force Academy English Department SN - 10466967 AB - The poem "Eye of the Needle," by M. K. Sukach is presented. First Line: That's bullshit, man. No one wants; Last Line: safe passage through the aperture of your sight. KW - EYE of the Needle (Poem) KW - SUKACH, M. K. N1 - Accession Number: 90667196; Source Information: 2013, Vol. 25, p262; Subject Term: EYE of the Needle (Poem); Subject Term: SUKACH, M. K.; Subject Term: ; Number of Pages: 1p; ; Document Type: Poem; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=90667196&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - SUKACH, M. K. T1 - War Story. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2013/11// Y1 - 2013/11// VL - 25 M3 - Poem SP - 263 EP - 263 PB - US Air Force Academy English Department SN - 10466967 AB - The poem "War Story," by M. K. Sukach is presented. First Line: "What used to get me were the guys that been, maybe, once. Last Line: while he stood fumbling to find the spot for the Star over his heart." KW - WAR Story (Poem) KW - SUKACH, M. K. N1 - Accession Number: 90667197; Source Information: 2013, Vol. 25, p263; Subject Term: WAR Story (Poem); Subject Term: SUKACH, M. K.; Subject Term: ; Number of Pages: 1p; ; Document Type: Poem; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=90667197&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - SUKACH, M. K. T1 - Platoon. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2013/11// Y1 - 2013/11// VL - 25 M3 - Poem SP - 264 EP - 264 PB - US Air Force Academy English Department SN - 10466967 AB - The poem "Platoon," by M. K. Sukach is presented. First Line: That's the gunner, with his drinking paycheck already half spent; Last Line: saying something that quiets the crew, who turn, eyes up, ready. KW - PLATOON (Poem) KW - SUKACH, M. K. N1 - Accession Number: 90667198; Source Information: 2013, Vol. 25, p264; Subject Term: PLATOON (Poem); Subject Term: SUKACH, M. K.; Subject Term: ; Number of Pages: 1p; ; Document Type: Poem; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=90667198&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - HONEYWELL, CLAUDIA T1 - Street Life. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2013/11// Y1 - 2013/11// VL - 25 M3 - Article SP - 274 EP - 280 PB - US Air Force Academy English Department SN - 10466967 AB - The article focuses on the challenges facing homeless war veterans in the U.S. It discusses "The Callapse of American Criminal Justice," a seminal work by Harvard Law School professor William Stuntz which focuses on the criminal justice system's prioritizing of procedure over principle and which has implications for the legalities of federal assistance programs like the U.S. Department of Veterans Affairs (VA). KW - HOMELESS veterans KW - STUNTZ, William KW - CRIMINAL law -- United States KW - CRIMINAL justice administration -- United States KW - UNITED States. Dept. of Veterans Affairs N1 - Accession Number: 90667205; Source Information: 2013, Vol. 25, p274; Subject Term: HOMELESS veterans; Subject Term: STUNTZ, William; Subject Term: CRIMINAL law -- United States; Subject Term: CRIMINAL justice administration -- United States; Subject Term: UNITED States. Dept. of Veterans Affairs; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=90667205&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2013-28505-001 AN - 2013-28505-001 AU - Schneider, Tamera R. AU - Lyons, Joseph B. AU - Khazon, Steven T1 - Emotional intelligence and resilience. JF - Personality and Individual Differences JO - Personality and Individual Differences JA - Pers Individ Dif Y1 - 2013/11// VL - 55 IS - 8 SP - 909 EP - 914 CY - Netherlands PB - Elsevier Science SN - 0191-8869 AD - Schneider, Tamera R., Wright State University, Department of Psychology, 335 Fawcett, Dayton, OH, US, 45435 N1 - Accession Number: 2013-28505-001. Partial author list: First Author & Affiliation: Schneider, Tamera R.; Wright State University, Dayton, OH, US. Release Date: 20130812. Correction Date: 20140120. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Emotional Intelligence; Personality Traits; Psychological Stress; Resilience (Psychological); Responses. Minor Descriptor: Physiology. Classification: Personality Traits & Processes (3120). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Positive and Negative Affect Scale DOI: 10.1037/t06070-000; Mayer-Salovey-Caruso Emotional Intelligence Test DOI: 10.1037/t05047-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 6. Issue Publication Date: Nov, 2013. Publication History: First Posted Date: Aug 6, 2013; Accepted Date: Jul 15, 2013; Revised Date: Jul 10, 2013; First Submitted Date: Jan 30, 2013. Copyright Statement: All rights reserved. Elsevier Ltd. 2013. AB - This study examined the relationship between emotional intelligence (EI) and the stress process. Participants (N = 126) completed an ability-based measure of EI and then engaged with two stressors. We assessed stressor appraisals, emotions, and physiological stress responses over time. We expected that higher EI would facilitate stress responses in the direction of challenge, rather than threat. As expected, EI facets were related to lower threat appraisals, more modest declines in positive affect, less negative affect and challenge physiological responses to stress. However, findings differed for men and women. This study provides predictive validity that EI facilitates stress resilience. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - emotional intelligence KW - resilience KW - psychological stress process KW - responses KW - threat KW - physiology KW - 2013 KW - Emotional Intelligence KW - Personality Traits KW - Psychological Stress KW - Resilience (Psychological) KW - Responses KW - Physiology KW - 2013 DO - 10.1016/j.paid.2013.07.460 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-28505-001&site=ehost-live&scope=site UR - tamera.schneider@wright.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-35230-015 AN - 2013-35230-015 AU - Walsh, Matthew M. AU - Anderson, John R. T1 - Electrophysiological responses to feedback during the application of abstract rules. JF - Journal of Cognitive Neuroscience JO - Journal of Cognitive Neuroscience JA - J Cogn Neurosci Y1 - 2013/11// VL - 25 IS - 11 SP - 1986 EP - 2002 CY - US PB - MIT Press SN - 0898-929X SN - 1530-8898 AD - Walsh, Matthew M., Air Force Research Laboratory, 711 HPW/RHAC-Cognitive Models and Agents Branch, 2620 Q Street, Building 852, Wright-Patterson AFB, OH, US, 45433 N1 - Accession Number: 2013-35230-015. PMID: 23915052 Partial author list: First Author & Affiliation: Walsh, Matthew M.; Air Force Research Laboratory, Wright-Patterson Air Force Base, Wright-Patterson AFB, OH, US. Release Date: 20140217. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Walsh, Matthew M. Major Descriptor: Electrophysiology; Evoked Potentials; Feedback; Mismatch Negativity. Minor Descriptor: Abstraction; Responses. Classification: Electrophysiology (2530). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 17. Issue Publication Date: Nov, 2013. Copyright Statement: Massachusetts Institute of Technology. 2013. AB - Much research focuses on how people acquire concrete stimulus–response associations from experience; however, few neuroscientific studies have examined how people learn about and select among abstract rules. To address this issue, we recorded ERPs as participants performed an abstract rule-learning task. In each trial, they viewed a sample number and two test numbers. Participants then chose a test number using one of three abstract mathematical rules they freely selected from: greater than the sample number, less than the sample number, or equal to the sample number. No one rule was always rewarded, but some rules were rewarded more frequently than others. To maximize their earnings, participants needed to learn which rules were rewarded most frequently. All participants learned to select the best rules for repeating and novel stimulus sets that obeyed the overall reward probabilities. Participants differed, however, in the extent to which they overgeneralized those rules to repeating stimulus sets that deviated from the overall reward probabilities. The feedback-related negativity (FRN), an ERP component thought to reflect reward prediction error, paralleled behavior. The FRN was sensitive to item-specific reward probabilities in participants who detected the deviant stimulus set, and the FRN was sensitive to overall reward probabilities in participants who did not. These results show that the FRN is sensitive to the utility of abstract rules and that the individualʼs representation of a taskʼs states and actions shapes behavior as well as the FRN. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - electrophysiological responses KW - feedback KW - abstract rules KW - event related potentials KW - feedback-related negativity KW - 2013 KW - Electrophysiology KW - Evoked Potentials KW - Feedback KW - Mismatch Negativity KW - Abstraction KW - Responses KW - 2013 U1 - Sponsor: National Institute of Mental Health, US. Grant: T32MH019983. Other Details: Training grant. Recipients: Walsh, Matthew M. U1 - Sponsor: National Institute of Mental Health, US. Grant: MH068243. Recipients: Anderson, John R. DO - 10.1162/jocn_a_00454 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-35230-015&site=ehost-live&scope=site UR - mmwl88@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-43260-001 AN - 2013-43260-001 AU - Xu, Yang AU - D'Lauro, Christopher AU - Pyles, John A. AU - Kass, Robert E. AU - Tarr, Michael J. T1 - Fine-grained temporal coding of visually-similar categories in the ventral visual pathway and prefrontal cortex. JF - Frontiers in Psychology JO - Frontiers in Psychology JA - Front Psychol Y1 - 2013/10/17/ VL - 4 CY - Switzerland PB - Frontiers Media S.A. SN - 1664-1078 AD - Xu, Yang, Machine Learning Department, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA, US, 15232 N1 - Accession Number: 2013-43260-001. Partial author list: First Author & Affiliation: Xu, Yang; Machine Learning Department, Carnegie Mellon University, Pittsburgh, PA, US. Other Publishers: Frontiers Research Foundation. Release Date: 20140224. Correction Date: 20160919. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Xu, Yang. Major Descriptor: Classification (Cognitive Process); Magnetoencephalography; Prefrontal Cortex; Temporal Lobe; Visual Cortex. Classification: Neuropsychology & Neurology (2520). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adolescence (13-17 yrs) (200); Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Brain Imaging; Empirical Study; Quantitative Study. References Available: Y. ArtID: 684. Issue Publication Date: Oct 17, 2013. Publication History: First Posted Date: Oct 17, 2013; Accepted Date: Sep 10, 2013; First Submitted Date: Jul 5, 2013. Copyright Statement: This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. Xu, D’Lauro, Pyles, Kass and Tarr. 2013. AB - Humans are remarkably proficient at categorizing visually-similar objects. To better understand the cortical basis of this categorization process, we used magnetoencephalography (MEG) to record neural activity while participants learned–with feedback–to discriminate two highly-similar, novel visual categories. We hypothesized that although prefrontal regions would mediate early category learning, this role would diminish with increasing category familiarity and that regions within the ventral visual pathway would come to play a more prominent role in encoding category-relevant information as learning progressed. Early in learning we observed some degree of categorical discriminability and predictability in both prefrontal cortex and the ventral visual pathway. Predictability improved significantly above chance in the ventral visual pathway over the course of learning with the left inferior temporal and fusiform gyri showing the greatest improvement in predictability between 150 and 250 ms (M200) during category learning. In contrast, there was no comparable increase in discriminability in prefrontal cortex with the only significant post-learning effect being a decrease in predictability in the inferior frontal gyrus between 250 and 350 ms (M300). Thus, the ventral visual pathway appears to encode learned visual categories over the long term. At the same time these results add to our understanding of the cortical origins of previously reported signature temporal components associated with perceptual learning. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - temporal coding KW - visually similar categories KW - visual pathway KW - prefrontal cortex KW - categorization process KW - magnetoencephalography KW - 2013 KW - Classification (Cognitive Process) KW - Magnetoencephalography KW - Prefrontal Cortex KW - Temporal Lobe KW - Visual Cortex KW - 2013 U1 - Sponsor: UPMC Brain Mapping Center, MEG. Other Details: Pilot Seed Fund. Recipients: No recipient indicated U1 - Sponsor: Pennsylvania Department of Health, Commonwealth Universal Research Enhancement Program, US. Recipients: No recipient indicated U1 - Sponsor: National Institute of Mental Health, US. Grant: MH064537. Recipients: No recipient indicated U1 - Sponsor: National Institutes of Health, US. Grant: R01MH064537; R90DA023426. Recipients: No recipient indicated U1 - Sponsor: Perceptual Expertise Network. Grant: 15573-S6. Recipients: No recipient indicated U1 - Sponsor: James S. McDonnell Foundation. Other Details: Collaborative award. Recipients: No recipient indicated U1 - Sponsor: National Science Foundation. Grant: SMA-1041755. Other Details: Temporal Dynamics of Learning Center at UCSD. Recipients: No recipient indicated U1 - Sponsor: National Science Foundation, Science of Learning Center. Grant: SBE-0542013. Recipients: No recipient indicated U1 - Sponsor: Richard King Mellon. Other Details: Fellowship. Recipients: Xu, Yang U1 - Sponsor: National Institutes of Health, US. Grant: 1R01MH084195-01. Other Details: EUREKA Award. Recipients: Tarr, Michael J. DO - 10.3389/fpsyg.2013.00684 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-43260-001&site=ehost-live&scope=site UR - christopher.dlauro@gmail.com UR - yx1@cs.cmu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Dorn, Ronald I. AU - Gordon, Steven J. AU - Allen, Casey D. AU - Cerveny, Niccole AU - Dixon, John C. AU - Groom, Kaelin M. AU - Hall, Kevin AU - Harrison, Emma AU - Mol, Lisa AU - Paradise, Thomas R. AU - Sumner, Paul AU - Thompson, Tyler AU - Turkington, Alice V. T1 - The role of fieldwork in rock decay research: Case studies from the fringe. JO - Geomorphology JF - Geomorphology Y1 - 2013/10/15/ VL - 200 M3 - Article SP - 59 EP - 74 SN - 0169555X AB - Abstract: Researchers exploring rock decay hail from chemistry, engineering, geography, geology, paleoclimatology, soil science, and other disciplines and use laboratory, microscopic, theoretical, and field-based strategies. We illustrate here how the tradition of fieldwork forms the core knowledge of rock decay and continues to build on the classic research of Blackwelder, Bryan, Gilbert, Jutson, King, Linton, Twidale, and von Humboldt. While development of nonfield-based investigation has contributed substantially to our understanding of processes, the wide range of environments, stone types, and climatic variability encountered raises issues of temporal and spatial scales too complex to fit into attempts at universal modeling. Although nonfield methods are immensely useful for understanding overarching processes, they can miss subtle differences in factors that ultimately shape rock surfaces. We, therefore, illustrate here how the tradition of fieldwork continues today alongside laboratory and computer-based investigations and contributes to our understanding of rock decay processes. This includes the contribution of fieldwork to the learning process of undergraduates, the calculation of activation energies of plagioclase and olivine dissolution, the high Arctic, the discovery of a new global carbon sink, the influence of plant roots, an analysis of the need for protocols, tafoni development, stone monuments, and rock coatings. These compiled vignettes argue that, despite revolutionary advances in instrumentation, rock decay research must remain firmly footed in the field. [Copyright &y& Elsevier] AB - Copyright of Geomorphology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Paleoclimatology KW - Soil science KW - Rocks KW - Geomorphology KW - Olivine KW - Dissolution (Chemistry) KW - Chemical weathering KW - Education KW - Fieldwork KW - Geomorphology KW - Physical weathering KW - Weathering N1 - Accession Number: 90522446; Dorn, Ronald I. 1; Email Address: ronald.dorn@asu.edu; Gordon, Steven J. 2; Allen, Casey D. 3; Cerveny, Niccole 4; Dixon, John C. 5; Groom, Kaelin M. 5; Hall, Kevin 6; Harrison, Emma 1; Mol, Lisa 7; Paradise, Thomas R. 5; Sumner, Paul 8; Thompson, Tyler 1; Turkington, Alice V. 9; Affiliations: 1: School of Geographical Sciences and Urban Planning, Box 875302, Arizona State University, Tempe, AZ 85287–5302, USA; 2: Department of Economics and Geography, United States Air Force Academy, 2354 Fairchild Drive, Colorado Springs, CO 80840–6299, USA; 3: Department of Geography and Environmental Sciences, University of Colorado Denver, P.O. Box 173364, Campus Box 172, Denver, CO 80217–3364, USA; 4: Cultural Sciences Department, Mesa Community College, 7110 East McKellips Road, Mesa, AZ 85207, USA; 5: Department of Geosciences, University of Arkansas, Fayetteville, AR 72701, USA; 6: Department of Geography, University of Northern British Columbia, Prince George, British Columbia, Canada V2N 4Z9; 7: School of Geography and the Environment, South Parks Road, University of Oxford, OX1 3QY, UK; 8: Department of Geography, Geoinfomatics and Meteorology, University of Pretoria, South Africa; 9: Department of Geography, University of Kentucky, 1457 Patterson Office Tower, Lexington, KY 40506–0027, USA; Issue Info: Oct2013, Vol. 200, p59; Thesaurus Term: RESEARCH; Thesaurus Term: Paleoclimatology; Thesaurus Term: Soil science; Subject Term: Rocks; Subject Term: Geomorphology; Subject Term: Olivine; Subject Term: Dissolution (Chemistry); Author-Supplied Keyword: Chemical weathering; Author-Supplied Keyword: Education; Author-Supplied Keyword: Fieldwork; Author-Supplied Keyword: Geomorphology; Author-Supplied Keyword: Physical weathering; Author-Supplied Keyword: Weathering; NAICS/Industry Codes: 212325 Clay and Ceramic and Refractory Minerals Mining; NAICS/Industry Codes: 212326 Shale, clay and refractory mineral mining and quarrying; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.geomorph.2012.12.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=90522446&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Abdelaziz, Ahmed E.M. AU - Leite, Gustavo B. AU - Hallenbeck, Patrick C. T1 - Addressing the challenges for sustainable production of algal biofuels: I. Algal strains and nutrient supply. JO - Environmental Technology JF - Environmental Technology Y1 - 2013/10// VL - 34 IS - 13/14 M3 - Article SP - 1783 EP - 1805 SN - 09593330 AB - Microalgae hold promise for the production of sustainable replacement of fossil fuels due to their high growth rates, ability to grow on non-arable land and their high content, under the proper conditions, of high energy compounds that can be relatively easily chemically converted to fuels using existing technology. However, projected large-scale algal production raises a number of sustainability concerns concerning land use, net energy return, water use and nutrient supply. The state-of-the-art of algal production of biofuels is presented with emphasis on some possible avenues to provide answers to the sustainability questions that have been raised. Here, issues concerning algal strains and supply of nutrients for large-scale production are discussed. Since sustainability concerns necessitate the use of wastewaters for supply of bulk nutrients, emphasis is placed on the composition and suitability of different wastewater streams. At the same time, algal cultivation has proven useful in waste treatment processes, and thus this aspect is also treated in some detail. [ABSTRACT FROM PUBLISHER] AB - Copyright of Environmental Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Biomass energy KW - Biomass production KW - Wastewater treatment KW - Biodiesel fuels KW - Algal biofuels KW - algae KW - biodiesel KW - biofuels KW - harvesting KW - nutrients KW - oil extraction KW - sustainability KW - wastewater KW - wastewater treatment N1 - Accession Number: 90608384; Abdelaziz, Ahmed E.M. 1; Leite, Gustavo B. 1; Hallenbeck, Patrick C. 1,2; Email Address: patrick.hallenbeck@umontreal.ca; Affiliations: 1: Département de microbiologie et immunologie, Université de Montréal, CP 6128, Centre-ville, Montréal, Canada, PQ, H3C 3J7; 2: Department of Biology, Life Sciences Research Center, United States Air Force Academy, 2355 Faculty Drive, USAF Academy, CO, 80840, USA; Issue Info: 2013, Vol. 34 Issue 13/14, p1783; Thesaurus Term: RESEARCH; Thesaurus Term: Biomass energy; Thesaurus Term: Biomass production; Thesaurus Term: Wastewater treatment; Thesaurus Term: Biodiesel fuels; Subject Term: Algal biofuels; Author-Supplied Keyword: algae; Author-Supplied Keyword: biodiesel; Author-Supplied Keyword: biofuels; Author-Supplied Keyword: harvesting; Author-Supplied Keyword: nutrients; Author-Supplied Keyword: oil extraction; Author-Supplied Keyword: sustainability; Author-Supplied Keyword: wastewater; Author-Supplied Keyword: wastewater treatment; NAICS/Industry Codes: 221117 Biomass Electric Power Generation; NAICS/Industry Codes: 221119 Other electric power generation; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 221320 Sewage Treatment Facilities; Number of Pages: 23p; Document Type: Article L3 - 10.1080/09593330.2013.827748 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=90608384&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Abdelaziz, Ahmed E.M. AU - Leite, Gustavo B. AU - Hallenbeck, Patrick C. T1 - Addressing the challenges for sustainable production of algal biofuels: II. Harvesting and conversion to biofuels. JO - Environmental Technology JF - Environmental Technology Y1 - 2013/10// VL - 34 IS - 13/14 M3 - Article SP - 1807 EP - 1836 SN - 09593330 AB - In order to ensure the sustainability of algal biofuel production, a number of issues need to be addressed. Previously, we reviewed some of the questions in this area involving algal species and the important challenges of nutrient supply and how these might be met. Here, we take up issues involving harvesting and the conversion of biomass to biofuels. Advances in both these areas are required if these third-generation fuels are to have a sufficiently high net energy ratio and a sustainable footprint. A variety of harvesting technologies are under investigation and recent studies in this area are presented and discussed. A number of different energy uses are available for algal biomass, each with their own advantages as well as challenges in terms of efficiencies and yields. Recent advances in these areas are presented and some of the especially promising conversion processes are highlighted. [ABSTRACT FROM PUBLISHER] AB - Copyright of Environmental Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Biomass energy KW - Biomass production KW - Wastewater treatment KW - Renewable energy sources KW - Algal biofuels KW - algae KW - biodiesel KW - biofuels KW - harvesting KW - nutrients KW - oil extraction KW - sustainability KW - wastewater treatment N1 - Accession Number: 90608389; Abdelaziz, Ahmed E.M. 1; Leite, Gustavo B. 1; Hallenbeck, Patrick C. 1,2; Email Address: patrick.hallenbeck@umontreal.ca; Affiliations: 1: Département de microbiologie et immunologie, Université de Montréal, CP 6128 Centre-Ville, Montréal, Quebec, Canada, PQ H3C 3J7; 2: Life Sciences Research Center, Department of Biology, 2355 Faculty Drive, United States Air Force Academy, CO, 80840, USA; Issue Info: 2013, Vol. 34 Issue 13/14, p1807; Thesaurus Term: RESEARCH; Thesaurus Term: Biomass energy; Thesaurus Term: Biomass production; Thesaurus Term: Wastewater treatment; Thesaurus Term: Renewable energy sources; Subject Term: Algal biofuels; Author-Supplied Keyword: algae; Author-Supplied Keyword: biodiesel; Author-Supplied Keyword: biofuels; Author-Supplied Keyword: harvesting; Author-Supplied Keyword: nutrients; Author-Supplied Keyword: oil extraction; Author-Supplied Keyword: sustainability; Author-Supplied Keyword: wastewater treatment; NAICS/Industry Codes: 221117 Biomass Electric Power Generation; NAICS/Industry Codes: 221119 Other electric power generation; NAICS/Industry Codes: 221320 Sewage Treatment Facilities; Number of Pages: 30p; Document Type: Article L3 - 10.1080/09593330.2013.831487 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=90608389&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Abdelaziz, Ahmed E.M. AU - Leite, Gustavo B. AU - Hallenbeck, Patrick C. T1 - Addressing the challenges for sustainable production of algal biofuels: II. Harvesting and conversion to biofuels. JO - Environmental Technology JF - Environmental Technology Y1 - 2013/10// VL - 34 IS - 13/14 M3 - Article SP - 1807 EP - 1836 SN - 09593330 AB - In order to ensure the sustainability of algal biofuel production, a number of issues need to be addressed. Previously, we reviewed some of the questions in this area involving algal species and the important challenges of nutrient supply and how these might be met. Here, we take up issues involving harvesting and the conversion of biomass to biofuels. Advances in both these areas are required if these third-generation fuels are to have a sufficiently high net energy ratio and a sustainable footprint. A variety of harvesting technologies are under investigation and recent studies in this area are presented and discussed. A number of different energy uses are available for algal biomass, each with their own advantages as well as challenges in terms of efficiencies and yields. Recent advances in these areas are presented and some of the especially promising conversion processes are highlighted. [ABSTRACT FROM PUBLISHER] AB - Copyright of Environmental Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Biomass energy KW - Biomass production KW - Wastewater treatment KW - Renewable energy sources KW - Algal biofuels -- Research KW - algae KW - biodiesel KW - biofuels KW - harvesting KW - nutrients KW - oil extraction KW - sustainability KW - wastewater treatment N1 - Accession Number: 90608389; Abdelaziz, Ahmed E.M. 1; Leite, Gustavo B. 1; Hallenbeck, Patrick C. 1,2; Email Address: patrick.hallenbeck@umontreal.ca; Affiliations: 1 : Département de microbiologie et immunologie, Université de Montréal, CP 6128 Centre-Ville, Montréal, Quebec, Canada, PQ H3C 3J7; 2 : Life Sciences Research Center, Department of Biology, 2355 Faculty Drive, United States Air Force Academy, CO, 80840, USA; Source Info: 2013, Vol. 34 Issue 13/14, p1807; Thesaurus Term: Biomass energy; Thesaurus Term: Biomass production; Thesaurus Term: Wastewater treatment; Thesaurus Term: Renewable energy sources; Subject Term: Algal biofuels -- Research; Author-Supplied Keyword: algae; Author-Supplied Keyword: biodiesel; Author-Supplied Keyword: biofuels; Author-Supplied Keyword: harvesting; Author-Supplied Keyword: nutrients; Author-Supplied Keyword: oil extraction; Author-Supplied Keyword: sustainability; Author-Supplied Keyword: wastewater treatment; Number of Pages: 30p; Document Type: Article L3 - 10.1080/09593330.2013.831487 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=8gh&AN=90608389&site=ehost-live&scope=site DP - EBSCOhost DB - 8gh ER - TY - JOUR ID - 109863570 T1 - Coadaptive aiding and automation enhance operator performance. AU - Christensen, James C AU - Estepp, Justin R Y1 - 2013/10// N1 - Accession Number: 109863570. Language: English. Entry Date: 20150724. Revision Date: 20170228. Publication Type: journal article; research; randomized controlled trial. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. NLM UID: 0374660. KW - Adaptation, Physiological -- Physiology KW - Aviation KW - Technology KW - Task Performance and Analysis KW - User-Computer Interface KW - Adult KW - Automation KW - Female KW - Human KW - Male KW - Neuronal Plasticity -- Physiology KW - Workload KW - Young Adult SP - 965 EP - 975 JO - Human Factors JF - Human Factors JA - HUM FACTORS VL - 55 IS - 5 PB - Sage Publications Inc. AB - Objective: In this work, we expand on the theory of adaptive aiding by measuring the effectiveness of coadaptive aiding, wherein we explicitly allow for both system and user to adapt to each other.Background: Adaptive aiding driven by psychophysiological monitoring has been demonstrated to be a highly effective means of controlling task allocation and system functioning. Psychophysiological monitoring is uniquely well suited for coadaptation, as malleable brain activity may be used as a continuous input to the adaptive system.Method: To establish the efficacy of the coadaptive system, physiological activation of adaptation was directly compared with manual activation or no activation of the same automation and cuing systems. We used interface adaptations and automation that are plausible for real-world operations, presented in the context of a multi-remotely piloted aircraft control simulation. Each participant completed 3 days of testing during 1 week. Performance was assessed via proportion of targets successfully engaged.Results: In the first 2 days of testing, there were no significant differences in performance between the conditions. However, in the third session, physiological adaptation produced the highest performance.Conclusion: By extending the data collection across multiple days, we offered enough time and repeated experience for user adaptation as well as online system adaptation, hence demonstrating coadaptive aiding.Application: The results of this work may be employed to implement more effective adaptive workstations in a variety of work domains. SN - 0018-7208 AD - Air Force Research Laboratory, 2510 Fifth Street B840, Wright-Patterson AFB, OH 45433, USA. james.christensen@wpafb.af.mil U2 - PMID: 24218905. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109863570&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Raghavan, R. T1 - Analysis of Steering Vector Mismatch on Adaptive Noncoherent Integration. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2013/10// VL - 49 IS - 4 M3 - Article SP - 2496 EP - 2508 SN - 00189251 AB - Amplitude and phase errors can cause mismatches between the hypothesized signal vector and the steering vector of an antenna array. A generalized likelihood ratio test (GLRT) for signal detection with multiple coherent processing intervals (CPIs) in unknown interference is derived. The detection performance of the resulting adaptive noncoherent integration (NCI) algorithm is analyzed along with the effect of steering vector mismatch on detection performance. Detection performance and the effect of steering vector mismatch are illustrated with results for both a nonfluctuating signal model and a CPI-to-CPI fluctuating signal model. It is shown that a signal-to-interference-plus-noise ratio (SINR) loss factor inherent to the algorithm in effect limits the performance gain due to NCI of mismatched signals. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNA arrays KW - SIGNAL detection KW - LIKELIHOOD ratio tests KW - SIGNAL-to-noise ratio KW - RADAR signal processing KW - TRACKING algorithms N1 - Accession Number: 90678121; Raghavan, R. 1; Affiliations: 1: Air Force Research Laboratory; Issue Info: Oct2013, Vol. 49 Issue 4, p2496; Subject Term: ANTENNA arrays; Subject Term: SIGNAL detection; Subject Term: LIKELIHOOD ratio tests; Subject Term: SIGNAL-to-noise ratio; Subject Term: RADAR signal processing; Subject Term: TRACKING algorithms; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1109/TAES.2013.6621831 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=90678121&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Kim, Kristopher T. AU - Kramer, Brad A. T1 - Direct Determination of the T-Matrix From a MoM Impedance Matrix Computed Using the Rao-Wilton-Glisson Basis Function. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2013/10// Y1 - 2013/10// VL - 61 IS - 10 M3 - Article SP - 5324 EP - 5327 SN - 0018926X AB - We present an explicit and numerically exact method for determining the T matrix of an arbitrarily shaped PEC object directly from a MoM impedance matrix that is generated with the Rao-Wilton-Glisson basis function for use in multiple-scattering calculations. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - T-matrix KW - IMPEDANCE matrices KW - RADIAL basis functions KW - MULTIPLE scattering (Physics) -- Mathematical models KW - NUMERICAL analysis N1 - Accession Number: 90678240; Source Information: Oct2013, Vol. 61 Issue 10, p5324; Subject Term: T-matrix; Subject Term: IMPEDANCE matrices; Subject Term: RADIAL basis functions; Subject Term: MULTIPLE scattering (Physics) -- Mathematical models; Subject Term: NUMERICAL analysis; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1109/TAP.2013.2273485 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=90678240&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Rossler, Carl W. AU - Patton, Lee Kenneth AU - Himed, Braham T1 - Rapid, near-optimal waveform adaptation: precompute and lookup via hash functions. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2013/10// VL - 7 IS - 8 M3 - Article SP - 925 EP - 932 SN - 17518784 AB - The authors propose a novel library-based waveform adaptation method which allows rapid, near-optimal, waveform adaptation for a broad set of applications. The authors refer to their method as precompute-and-lookup (PAL). In contrast to existing library-based methods, which must evaluate each waveform in the library in order to determine the most suitable waveform, the authors' method employs hash functions. With the authors' method, the computational complexity of waveform adaptation is solely determined by the chosen hash function, and does not grow with library size. The authors apply PAL to the problem of waveform adaptation for target detection in the presence of additive coloured Gaussian noise under practical constraints. Monte Carlo simulations show that PAL is capable of producing near-optimal waveforms. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONTE Carlo method KW - WAVE analysis KW - RADAR KW - RANDOM noise theory KW - COMPUTATIONAL complexity N1 - Accession Number: 97414280; Rossler, Carl W. 1; Email Address: rossler.3@osu.edu; Patton, Lee Kenneth 2; Himed, Braham 3; Affiliations: 1: Electrical and Computer Engineering, Ohio State University, 2015 Neil Avenue, Columbus, OH 43210, USA; 2: Matrix Research & Engineering, 1300 Research Park Drive, Dayton, OH 45432, USA; 3: RYMD, Air Force Research Laboratory, 2241 Avionics Circle, Bldg 620, Dayton, OH 45433, USA; Issue Info: Oct2013, Vol. 7 Issue 8, p925; Thesaurus Term: MONTE Carlo method; Subject Term: WAVE analysis; Subject Term: RADAR; Subject Term: RANDOM noise theory; Subject Term: COMPUTATIONAL complexity; Number of Pages: 8p; Document Type: Article L3 - 10.1049/iet-rsn.2012.0316 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=97414280&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 104229504 T1 - Automated Extraction of BI-RADS Final Assessment Categories from Radiology Reports with Natural Language Processing. AU - Sippo, Dorothy AU - Warden, Graham AU - Andriole, Katherine AU - Lacson, Ronilda AU - Ikuta, Ichiro AU - Birdwell, Robyn AU - Khorasani, Ramin Y1 - 2013/10// N1 - Accession Number: 104229504. Language: English. Entry Date: 20131004. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Allied Health; Biomedical; Computer/Information Science; Double Blind Peer Reviewed; Peer Reviewed; USA. Special Interest: Diagnostic Imaging. NLM UID: 9100529. KW - Algorithms KW - Mammography KW - Natural Language Processing KW - Reports KW - Human KW - Confidence Intervals KW - Cross Sectional Studies KW - Precision KW - Breast Neoplasms -- Diagnosis KW - Patient Record Systems KW - Breast -- Radiography KW - Software KW - Data Analysis Software KW - Data Collection SP - 989 EP - 994 JO - Journal of Digital Imaging JF - Journal of Digital Imaging JA - J DIGIT IMAGING VL - 26 IS - 5 CY - , PB - Springer Science & Business Media B.V. AB - The objective of this study is to evaluate a natural language processing (NLP) algorithm that determines American College of Radiology Breast Imaging Reporting and Data System (BI-RADS) final assessment categories from radiology reports. This HIPAA-compliant study was granted institutional review board approval with waiver of informed consent. This cross-sectional study involved 1,165 breast imaging reports in the electronic medical record (EMR) from a tertiary care academic breast imaging center from 2009. Reports included screening mammography, diagnostic mammography, breast ultrasound, combined diagnostic mammography and breast ultrasound, and breast magnetic resonance imaging studies. Over 220 reports were included from each study type. The recall (sensitivity) and precision (positive predictive value) of a NLP algorithm to collect BI-RADS final assessment categories stated in the report final text was evaluated against a manual human review standard reference. For all breast imaging reports, the NLP algorithm demonstrated a recall of 100.0 % (95 % confidence interval (CI), 99.7, 100.0 %) and a precision of 96.6 % (95 % CI, 95.4, 97.5 %) for correct identification of BI-RADS final assessment categories. The NLP algorithm demonstrated high recall and precision for extraction of BI-RADS final assessment categories from the free text of breast imaging reports. NLP may provide an accurate, scalable data extraction mechanism from reports within EMRs to create databases to track breast imaging performance measures and facilitate optimal breast cancer population management strategies. SN - 0897-1889 AD - Medical Corp, United States Air Force, CMR 402 BOX 142, APO AE 09180-0002 Washington USA AD - Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St Boston 02115 USA AD - Department of Radiology, Norwalk Hospital, Yale School of Medicine, 34 Maple Street Norwalk 06856 USA U2 - PMID: 23868515. DO - 10.1007/s10278-013-9616-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104229504&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 107916393 T1 - Pulsed dosed delivery of oxygen in mechanically ventilated pigs with acute lung injury. AU - Gustafson, Joshua D AU - Yang, Sung AU - Blakeman, Thomas Chris AU - Dorlac, Warren C AU - Branson, Richard Y1 - 2013/10// N1 - Accession Number: 107916393. Language: English. Entry Date: 20150213. Revision Date: 20150712. Publication Type: Journal Article; research. Journal Subset: Biomedical; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Critical Care; Emergency Care. NLM UID: 101570622. KW - Acute Lung Injury -- Therapy KW - Oxygen -- Administration and Dosage KW - Oxygen Therapy -- Methods KW - Respiration, Artificial -- Methods KW - Animals KW - Crossover Design KW - Models, Biological KW - Swine KW - Treatment Outcomes SP - 775 EP - 779 JO - Journal of Trauma & Acute Care Surgery JF - Journal of Trauma & Acute Care Surgery JA - J TRAUMA ACUTE CARE SURG VL - 75 IS - 4 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - BACKGROUND: Acute lung injury (ALI) is a condition that leads to impaired oxygen delivery. We demonstrated previously that using a portable oxygen concentrator (POC) with pulsed dose delivery of oxygen is an alternative option to conserve oxygen while still maintaining adequate oxygen delivery in a mechanical model. We hypothesized that using a modified POC, pulsed dose oxygen delivery can provide adequate oxygenation in an animal model. METHODS: In a crossover study, we induced ALI in 15 pigs using an oleic acid model. We ventilated the pigs using equipment that is used by Critical Care Air Transport Teams of the US Air Force. We compared oxygen delivery using a POC in both continuous flow and pulsed dose modes, while in both volume-control and pressure-control mechanical ventilation. RESULTS: The PaO2/FIO2 ratios were increased in both the continuous flow and pulsed dose delivery for volume control and pressure control. In volume control, the pulsed dose demonstrated a significant increase in the PaO2/FIO2 ratio (168.8 [96.1] vs. 91.7 [65.4], p = 0.002) compared with continuous flow. However, this was not seen in pressure-control ventilation (89.0 [74.5] vs. 79.1 [65.4], p = 0.67). CONCLUSION: We were able to demonstrate that oxygen delivery using a POC in mechanically ventilated pigs with ALI is feasible. We were also able to demonstrate that pulsed dose delivery from a POC is superior to continuous flow oxygen delivery for oxygenation in ALI, when using volume control. We propose that this is a safe alternative to conserve oxygen in the transport of critically ill patients. SN - 2163-0755 AD - From the Wright-Patterson Air Force Base (J.G.), United States Air Force; Department of Surgery (J.G.), Wright State University Boonshoft School of Medicine; University of Cincinnati School of Medicine (S.Y.), Cincinnati, Ohio; Division of Trauma and Critical Care (C.B., W.D., R.B.), Department of Surgery, University of Cincinnati School of Medicine, Cincinnati, Ohio. U2 - PMID: 24158194. DO - 10.1097/TA.0b013e3182a9252e UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107916393&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2013-34481-005 AN - 2013-34481-005 AU - Slabakova, Roumyana AU - Cabrelli Amaro, Jennifer AU - Kang, Sang Kyun T1 - Regular and novel metonymy in native Korean, Spanish, and English: Experimental evidence for various acceptability. JF - Metaphor and Symbol JO - Metaphor and Symbol JA - Metaphor Symb Y1 - 2013/10// VL - 28 IS - 4 SP - 275 EP - 293 CY - United Kingdom PB - Taylor & Francis SN - 1092-6488 SN - 1532-7868 AD - Slabakova, Roumyana, Department of Modern Languages, University of Southampton, Building 65, Avenue Campus, Highfield, Southampton, United Kingdom, SO17 1BF N1 - Accession Number: 2013-34481-005. Other Journal Title: Metaphor & Symbolic Activity. Partial author list: First Author & Affiliation: Slabakova, Roumyana; University of Southampton, Southampton, United Kingdom. Other Publishers: Lawrence Erlbaum. Release Date: 20140106. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Comprehension; Figurative Language; Psycholinguistics. Classification: Linguistics & Language & Speech (2720). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Paraphrase Task; Acceptability Judgment Task. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 19. Issue Publication Date: Oct, 2013. Copyright Statement: Taylor & Francis Group, LLC AB - This article presents results of two off-line comprehension tasks, investigating the acceptability of novel and regular metonymy by speakers of English, Korean, and Spanish. We are interested in uncovering regular–novel metonymy computation discrepancies, and whether they are treated differently in the different languages. The distinction between novel and regular metonymy is discussed by the existing theoretical treatments of metonymy as well as in psycholinguistic research. The findings of this study constitute further experimental support for the psychological reality of this distinction. In addition, it is demonstrated that the speakers of the three languages treat novel and regular metonymy differently. Significant findings are the acceptability of novel metonymy in Korean and the relative lack of conventionalization effect for regular metonymy in Korean and Spanish. We conclude that current theoretical approaches to metonymy should focus more on cross-linguistic differences and that further language comparisons are warranted and needed, in comprehension as well as in processing. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - metonymy KW - language KW - theoretical treatments KW - psycholinguistics KW - 2013 KW - Comprehension KW - Figurative Language KW - Psycholinguistics KW - 2013 DO - 10.1080/10926488.2013.826556 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-34481-005&site=ehost-live&scope=site UR - r.slabakova@soton.ac.uk DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-31572-001 AN - 2013-31572-001 AU - Rabenhorst, Mandy M. AU - McCarthy, Randy J. AU - Thomsen, Cynthia J. AU - Milner, Joel S. AU - Travis, Wendy J. AU - Foster, Rachel E. AU - Copeland, Carol W. T1 - Spouse abuse among United States Air Force personnel who deployed in support of Operation Iraqi Freedom/Operation Enduring Freedom. JF - Journal of Family Psychology JO - Journal of Family Psychology JA - J Fam Psychol Y1 - 2013/10// VL - 27 IS - 5 SP - 754 EP - 761 CY - US PB - American Psychological Association SN - 0893-3200 SN - 1939-1293 AD - Rabenhorst, Mandy M., Center for the Study of Family Violence and Sexual Assault, Northern Illinois University, 125 Presidents Blvd, DeKalb, IL, US N1 - Accession Number: 2013-31572-001. PMID: 24015706 Partial author list: First Author & Affiliation: Rabenhorst, Mandy M.; Center for the Study of Family Violence and Sexual Assault, Northern Illinois University, DeKalb, IL, US. Other Publishers: Sage Periodicals Press; Sage Publications. Release Date: 20130909. Correction Date: 20131007. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Rabenhorst, Mandy M. Major Descriptor: Air Force Personnel; Combat Experience; Intimate Partner Violence; Military Deployment; Partner Abuse. Classification: Behavior Disorders & Antisocial Behavior (3230); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 8. Issue Publication Date: Oct, 2013. Publication History: First Posted Date: Sep 9, 2013; Accepted Date: Jul 26, 2013; Revised Date: Jul 25, 2013; First Submitted Date: Nov 12, 2012. Copyright Statement: American Psychological Association. 2013. AB - The authors examined spouse abuse perpetration among all married U.S. Air Force personnel who deployed in support of Operation Iraqi Freedom/Operation Enduring Freedom. Using Poisson and conditional Poisson regression, they compared rates of spouse abuse perpetration predeployment and postdeployment in the population of married U.S. Air Force personnel who had a combat-related deployment between October 1, 2001 and October 31, 2008 (N = 156,296). Just over 2% (n = 3,524) of deployers perpetrated at least one substantiated incident of spouse physical or emotional abuse within the 308,197,653 days at risk for abuse during the study period. Male deployers perpetrated spouse abuse at approximately twice the rate of female deployers. Regarding changes in rates of spouse abuse perpetration postdeployment versus predeployment among all deployers, the authors found no differences overall; however, several deployer and incident-related characteristics moderated this effect. Rates of emotional abuse, mild abuse, and abuse not involving alcohol were significantly lower postdeployment, whereas rates of moderate/severe abuse and abuse involving alcohol were significantly higher postdeployment. Although the majority of U.S. Air Force deployers did not perpetrate any substantiated incidents of spouse abuse, there was variability in the impact of deployment on spouse abuse rates before versus after deployment. The finding that rates of moderate/severe spouse abuse incidents involving alcohol were higher postdeployment suggests a need for focused prevention/intervention efforts. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Operation Enduring Freedom KW - Operation Iraqi Freedom KW - combat deployment KW - intimate partner violence KW - spouse abuse KW - United States Air Force personnel KW - 2013 KW - Air Force Personnel KW - Combat Experience KW - Intimate Partner Violence KW - Military Deployment KW - Partner Abuse KW - 2013 U1 - Sponsor: United States Air Force Family Advocacy Program, US. Other Details: Through a subcontract awarded by Kansas State University and the National Institute of Food and Agriculture, United States Department of Agriculture.. Recipients: Rabenhorst, Mandy M.; Milner, Joel S. DO - 10.1037/a0034283 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-31572-001&site=ehost-live&scope=site UR - mrabenho@niu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-34199-007 AN - 2013-34199-007 AU - Christensen, James C. AU - Estepp, Justin R. T1 - Coadaptive aiding and automation enhance operator performance. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2013/10// VL - 55 IS - 5 SP - 965 EP - 975 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Christensen, James C., Air Force Research Laboratory, 2510 Fifth Street B840, Wright- Patterson AFB, OH, US, 45433 N1 - Accession Number: 2013-34199-007. PMID: 24218905 Partial author list: First Author & Affiliation: Christensen, James C.; Air Force Research Laboratory, Dayton, OH, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20131104. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Adaptive Testing; Automation; Human Computer Interaction; Monitoring; Performance. Minor Descriptor: Psychophysiology. Classification: Human Factors Engineering (4010). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Tests & Measures: NASA–Task Load Index. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 11. Issue Publication Date: Oct, 2013. Publication History: Accepted Date: Jan 7, 2013; First Submitted Date: Jun 6, 2012. AB - Objective: In this work, we expand on the theory of adaptive aiding by measuring the effectiveness of coadaptive aiding, wherein we explicitly allow for both system and user to adapt to each other. Background:Adaptive aiding driven by psycho- physiological monitoring has been demonstrated to be a highly effective means of controlling task allocation and system functioning. Psychophysiological monitoring is uniquely well suited for coadaptation, as malleable brain activity may be used as a continuous input to the adaptive system. Method: To establish the efficacy of the coadaptive system, physiological activation of adaptation was directly compared with manual activation or no activation of the same automation and cuing systems. We used interface adaptations and automation that are plausible for real-world operations, presented in the context of a multi–remotely piloted aircraft control simulation. Each participant completed 3 days of testing during 1 week. Performance was assessed via proportion of targets successfully engaged. Results: In the first 2 days of testing, there were no significant differences in performance between the conditions. However, in the third session, physiological adaptation produced the highest performance. Conclusion: By extending the data collection across multiple days, we offered enough time and repeated experience for user adaptation as well as online system adaptation, hence demonstrating coadaptive aiding. Application: The results of this work may be employed to implement more effective adaptive works-tations in a variety of work domains. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - automation KW - operator performance KW - psychophysiological monitoring KW - adaptive aiding KW - human computer interaction KW - 2013 KW - Adaptive Testing KW - Automation KW - Human Computer Interaction KW - Monitoring KW - Performance KW - Psychophysiology KW - 2013 U1 - Sponsor: Air Force Office of Scientific Research. Recipients: No recipient indicated DO - 10.1177/0018720813476883 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-34199-007&site=ehost-live&scope=site UR - ORCID: 0000-0001-8049-9582 UR - ORCID: 0000-0003-4539-5467 UR - james.christensen@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Traversa, Andreina AU - Loffredo, Elisabetta AU - Palazzo, Antonio J. AU - Bashore, Terry L. AU - Senesi, Nicola T1 - Enhancement of Germination and Growth of Slickspot Peppergrass in a New Medium with Two Compost Organic Fractions. JO - Communications in Soil Science & Plant Analysis JF - Communications in Soil Science & Plant Analysis Y1 - 2013/09/25/ VL - 44 IS - 17 M3 - Article SP - 2636 EP - 2646 SN - 00103624 AB - Slickspot peppergrass (Lepidium papilliferum) is an herbaceous biennal or possibly perennial “rare” endemic plant of the southwestern Idaho high desert listed as a threatened species. This plant establishes perennial seed banks, with seeds remaining dormant and viable for several years. This study aimed to enhance the germination and early growth of this plant by adopting a new medium, a nutrient-enriched agar solution, also added with humic acid (HA) and water-extractable organic matter (WEOM) fractions isolated from a green compost (GC) and a mixed compost (MC). The germination percentage of slickspot peppergrass in this new medium was much greater than that obtained in previous studies. Further, the addition of GC-HA in the medium enhanced significantly the germination and early growth of this plant. The addition of GC-WEOM and MC-WEOM were beneficial only on plant growth for at least 7 months. [ABSTRACT FROM AUTHOR] AB - Copyright of Communications in Soil Science & Plant Analysis is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Germination KW - Endemic plants KW - Humic acid KW - Plant species KW - Plant growth KW - Lepidium papilliferum KW - Idaho, Southwestern KW - Compost KW - humic acid KW - slickspot peppergrass KW - water-extractable organic matter N1 - Accession Number: 90091817; Traversa, Andreina 1; Loffredo, Elisabetta 1; Email Address: loffredo@agr.uniba.it; Palazzo, Antonio J. 2; Bashore, Terry L. 3; Senesi, Nicola 1; Affiliations: 1: Dipartimento di Biologia e Chimica Agro-forestale e Ambientale, University of Bari, Bari, Italy; 2: Engineer Research and Development Center- Cold Regions Research and Engineering Laboratory, Hanover, New Hampshire, USA; 3: Headquarters Air Combat Command/Airspace, Ranges, Airfield Operations Division, Langley Air Force Base, Virginia, USA; Issue Info: Sep2013, Vol. 44 Issue 17, p2636; Thesaurus Term: Germination; Thesaurus Term: Endemic plants; Thesaurus Term: Humic acid; Thesaurus Term: Plant species; Thesaurus Term: Plant growth; Subject Term: Lepidium papilliferum; Subject: Idaho, Southwestern; Author-Supplied Keyword: Compost; Author-Supplied Keyword: humic acid; Author-Supplied Keyword: slickspot peppergrass; Author-Supplied Keyword: water-extractable organic matter; NAICS/Industry Codes: 111422 Floriculture Production; Number of Pages: 11p; Document Type: Article L3 - 10.1080/00103624.2013.811523 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=90091817&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Yin, Zhiyao AU - Montello, Aaron AU - Carter, Campbell D. AU - Lempert, Walter R. AU - Adamovich, Igor V. T1 - Measurements of temperature and hydroxyl radical generation/decay in lean fuel–air mixtures excited by a repetitively pulsed nanosecond discharge. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2013/09// VL - 160 IS - 9 M3 - Article SP - 1594 EP - 1608 SN - 00102180 AB - Abstract: OH Laser Induced Fluorescence (LIF) and picosecond (ps), broadband Coherent Anti-Stokes Raman Spectroscopy (CARS) are used for time-resolved temperature and time-resolved, absolute OH number density measurements in lean H2-air, CH4-air, C2H4-air, and C3H8-air mixtures in a nanosecond (ns) pulse discharge cell/plasma flow reactor. The premixed fuel–air flow in the reactor, initially at T 0 =500K and P =100torr, is excited by a repetitive ns pulse discharge in a plane-to-plane geometry (peak voltage 28kV, discharge gap 10mm, estimated pulse energy 1.25mJ/pulse), operated in burst mode at 10kHz pulse repetition rate. In most measurements, burst duration is limited to 50 pulses, to preclude plasma-assisted ignition. The discharge uniformity in air and fuel–air flows is verified using sub-ns-gated images (employing an intensified charge-coupled device camera). Temperatures measured at the end of the discharge burst are in the range of T =550–600K, using both OH LIF and CARS, and remain essentially unchanged for up to 10ms after the burst. Time-resolved temperature measured by CARS during plasma-assisted ignition of H2-air is in good agreement with kinetic model predictions. Based on CARS measurement, vibrational nonequilibrium is not a significant factor at the present conditions. Time-resolved, absolute OH number density, measured after the discharge burst, demonstrates that OH concentration in C2H4-air, C3H8-air, and CH4 is highest in lean mixtures. In H2-air, OH concentration is nearly independent of the equivalence ratio. In C2H4-air and C3H8-air, unlike in CH4-air and in H2-air, transient OH-concentration overshoot after the discharge is detected. In C2H4-air and C3H8-air, OH decays after the discharge on the time scale of ∼0.02–0.1ms, suggesting little accumulation during the burst of pulses repeated at 10kHz. In CH4-air and H2-air, OH concentration decays within ∼0.1–1.0ms and 0.5–1.0ms, respectively, showing that it may accumulate during the burst. The experimental results are compared with kinetic modeling calculations using plasma/fuel chemistry model employing several H2-air and hydrocarbon-air chemistry mechanisms. Kinetic mechanisms for H2-air, CH4-air, and C2H4-air developed by A. Konnov provide the best overall agreement with OH measurements. In C3H8-air, none of the hydrocarbon chemistry mechanisms agrees well with the data. The results show the need for development of an accurate, predictive low-temperature plasma chemistry/fuel chemistry kinetic model applicable to fuels C3 and higher. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Lean combustion KW - Temperature measurements KW - Glow discharges KW - Hydroxyl group KW - Mixtures KW - Laser-induced fluorescence KW - Raman spectroscopy KW - Anti-Stokes scattering KW - Kinetic modeling KW - Laser Induced Fluorescence KW - Low temperature plasmas KW - Nanosecond pulse discharge KW - Plasma assisted combustion N1 - Accession Number: 89134891; Yin, Zhiyao 1; Email Address: yin.67@osu.edu; Montello, Aaron 1; Carter, Campbell D. 2; Lempert, Walter R. 1; Adamovich, Igor V. 1; Affiliations: 1: Michael A. Chaszeyka Nonequilibrium Thermodynamics Laboratories, Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210, United States; 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, United States; Issue Info: Sep2013, Vol. 160 Issue 9, p1594; Thesaurus Term: Lean combustion; Subject Term: Temperature measurements; Subject Term: Glow discharges; Subject Term: Hydroxyl group; Subject Term: Mixtures; Subject Term: Laser-induced fluorescence; Subject Term: Raman spectroscopy; Subject Term: Anti-Stokes scattering; Author-Supplied Keyword: Kinetic modeling; Author-Supplied Keyword: Laser Induced Fluorescence; Author-Supplied Keyword: Low temperature plasmas; Author-Supplied Keyword: Nanosecond pulse discharge; Author-Supplied Keyword: Plasma assisted combustion; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.combustflame.2013.03.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=89134891&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Abboud, Jacques E. AU - Jiang, Naibo AU - Zhang, Zhili AU - Roy, Sukesh AU - Gord, James R. T1 - Spatial and temporal control of on-demand propane–air flame ignition by active photothermal effect of aluminum nanoenergetics. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2013/09// VL - 160 IS - 9 M3 - Article SP - 1842 EP - 1847 SN - 00102180 AB - Abstract: Active photothermal effects of aluminum nanoenergetics are demonstrated to control spatially and temporally the ignition of propane/air flames. High-speed chemiluminescence images of hydroxyl (OH*) and methylidyne (CH*) radicals and aluminum oxide (AlO) are employed to confirm the local flame ignition and propagation by activation of the nanoenergetics through the use of a single exposure from a xenon flash lamp. The photothermal effects of the nanoenergetics can efficiently activate the localized exothermal aluminum oxidation reactions, leading to sequential flame ignition. Most of the energy required for ignition is provided by the oxidation reaction of the aluminum nanoparticles such that the photothermal MIE (Minimum Ignition Energy) is at least 67 times less than that from regular spark ignition. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Combustion KW - Aluminum KW - Propane KW - Flame KW - Photothermal effect KW - Spark ignition engines KW - Metal nanoparticles KW - Carbynes KW - Active photothermal KW - Ignition KW - On-demand KW - Plasmon resonance N1 - Accession Number: 89134913; Abboud, Jacques E. 1; Jiang, Naibo 2; Zhang, Zhili 1; Email Address: zzhang24@utk.edu; Roy, Sukesh 2; Gord, James R. 3; Affiliations: 1: Mechanical, Aerospace and Biomedical Engineering Department, University of Tennessee, Knoxville, TN 37996, USA; 2: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, OH 45431, USA; 3: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Issue Info: Sep2013, Vol. 160 Issue 9, p1842; Thesaurus Term: Combustion; Thesaurus Term: Aluminum; Subject Term: Propane; Subject Term: Flame; Subject Term: Photothermal effect; Subject Term: Spark ignition engines; Subject Term: Metal nanoparticles; Subject Term: Carbynes; Author-Supplied Keyword: Active photothermal; Author-Supplied Keyword: Ignition; Author-Supplied Keyword: On-demand; Author-Supplied Keyword: Plasmon resonance; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 333618 Other Engine Equipment Manufacturing; NAICS/Industry Codes: 333619 Other engine and power transmission equipment manufacturing; NAICS/Industry Codes: 424710 Petroleum Bulk Stations and Terminals; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 454312 Liquefied petroleum gas (bottled gas) dealers; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.combustflame.2013.03.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=89134913&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 107930841 T1 - Air Force Dental Personnel Improving Their Communities. AU - Magill, Lacey L. Y1 - 2013/09//Sep/Oct2013 N1 - Accession Number: 107930841. Language: English. Entry Date: 20131010. Revision Date: 20150712. Publication Type: Journal Article; anecdote; pictorial; tables/charts. Journal Subset: Allied Health; Blind Peer Reviewed; Peer Reviewed; USA. Special Interest: Dental Care; Military/Uniformed Services. NLM UID: 16520250R. KW - United States Air Force KW - Dental Assistants KW - Community-Institutional Relations KW - Volunteer Workers KW - Medically Underserved SP - 26 EP - 48 JO - Dental Assistant JF - Dental Assistant JA - DENT ASSIST VL - 82 IS - 5 CY - Chicago, Illinois PB - American Dental Assistant Association SN - 1088-3886 AD - 10th Dental Squadron, United States Air Force Academy, CO U2 - PMID: 24228322. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107930841&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Wu, Yongpeng AU - Xiao, Chengshan AU - Gao, Xiqi AU - Matyjas, John D. AU - Ding, Zhi T1 - Linear Precoder Design for MIMO Interference Channels with Finite-Alphabet Signaling. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2013/09// VL - 61 IS - 9 M3 - Article SP - 3766 EP - 3780 SN - 00906778 AB - This paper investigates the linear precoder design for K-user interference channels of multiple-input multiple-output (MIMO) transceivers under finite alphabet inputs. We first obtain general explicit expressions of the achievable rate for users in the MIMO interference channel systems. We study optimal transmission strategies in both low and high signal-to-noise ratio (SNR) regions. Given finite alphabet inputs, we show that a simple power allocation design achieves optimal performance at high SNR whereas the well-known interference alignment technique for Gaussian inputs only utilizes a partial interference-free signal space for transmission and leads to a constant rate loss when applied naively to finite-alphabet inputs. Moreover, we establish necessary conditions for the linear precoder design to achieve weighted sum-rate maximization. We also present an efficient iterative algorithm for determining precoding matrices of all the users. Our numerical results demonstrate that the proposed iterative algorithm achieves considerably higher sum-rate under practical QAM inputs than other known methods. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Radio transmitter-receivers KW - PERFORMANCE KW - Signal-to-noise ratio KW - Mobile communication systems -- Research KW - Interference channels (Telecommunications) KW - MIMO systems KW - Transmitters (Communication) KW - Finite alphabet KW - interference channel KW - Interference channels KW - linear precoding KW - MIMO KW - Receivers KW - Signal to noise ratio KW - Transmitters KW - Vectors N1 - Accession Number: 90677771; Wu, Yongpeng 1; Xiao, Chengshan 2; Gao, Xiqi 1; Matyjas, John D. 3; Ding, Zhi 4; Affiliations: 1: National Mobile Communications Research Laboratory, Southeast University, Nanjing, 210096, P. R. China; 2: Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA; 3: Air Force Research Laboratory/RIT, Rome, NY 13441, USA; 4: Department of Electrical and Computer Engineering, University of California, Davis, CA 95616, USA; Issue Info: Sep2013, Vol. 61 Issue 9, p3766; Thesaurus Term: Radio transmitter-receivers; Thesaurus Term: PERFORMANCE; Thesaurus Term: Signal-to-noise ratio; Subject Term: Mobile communication systems -- Research; Subject Term: Interference channels (Telecommunications); Subject Term: MIMO systems; Subject Term: Transmitters (Communication); Author-Supplied Keyword: Finite alphabet; Author-Supplied Keyword: interference channel; Author-Supplied Keyword: Interference channels; Author-Supplied Keyword: linear precoding; Author-Supplied Keyword: MIMO; Author-Supplied Keyword: Receivers; Author-Supplied Keyword: Signal to noise ratio; Author-Supplied Keyword: Transmitters; Author-Supplied Keyword: Vectors; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 15p; Document Type: Article L3 - 10.1109/TCOMM.2013.072213.130132 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=90677771&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Yang, Guo-Min AU - Wu, Jing AU - Lou, Jing AU - Liu, Ming AU - Sun, Nian X. T1 - Low-Loss Magnetically Tunable Bandpass Filters With YIG Films. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2013/09// VL - 49 IS - 9 M3 - Article SP - 5063 EP - 5068 SN - 00189464 AB - A magnetically tunable bandpass filter (BPF) with a yttrium iron garnet (YIG) film deposited on the gadolinium gallium garnet (GGG) substrate have been designed, fabricated, and characterized. Single-crystal YIG films at their ferromagnetic resonance were adopted as the resonator, which was coupled to a T-shaped microstrip coupling structure to form a bandpass filter design. The operating frequency of the BPF can be tuned via a bias magnetic field, and a large tunability of the operation frequency of 190–840 MHz with relatively small bias fields of 50–250 Oe, together with a low insertion loss of < 2 dB. This is equivalent to 12%–54% of the central frequency of the bandpass filter. Double-sided YIG films were used to enhance the filter bandwidth, and a maximum 3-dB bandwidth of 57 MHz was realized with the bias field of 155 Oe. These demonstrated magnetically tunable bandpass filters are very compact and energy efficient, which could have many applications in radio frequency (RF) front and other microwave circuits. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BANDPASS filters KW - GADOLINIUM KW - THIN films KW - YTTRIUM iron garnet KW - SUBSTRATES (Materials science) KW - MICROFABRICATION KW - FERROMAGNETIC resonance KW - Ferromagnetic resonance KW - magnetically tunable bandpass filters KW - yttrium iron garnet (YIG)–gadolinium gallium garnet (YIG-GGG) N1 - Accession Number: 89927238; Yang, Guo-Min 1; Wu, Jing 2; Lou, Jing 3; Liu, Ming 4; Sun, Nian X. 5; Affiliations: 1: Key Laboratory of Wave Scattering and Remote Sensing Information, Department of Communication Science and Engineering, Fudan University, Shanghai, China; 2: Boston Scientific, Natick, MA, USA; 3: Hitachi Global Storage Technologies, San Jose, CA, USA; 4: Air Force Research Laboratory, Dayton, OH, USA; 5: Department of Electrical and Computer Engineering, Northeastern University, Boston, MA, USA; Issue Info: Sep2013, Vol. 49 Issue 9, p5063; Subject Term: BANDPASS filters; Subject Term: GADOLINIUM; Subject Term: THIN films; Subject Term: YTTRIUM iron garnet; Subject Term: SUBSTRATES (Materials science); Subject Term: MICROFABRICATION; Subject Term: FERROMAGNETIC resonance; Author-Supplied Keyword: Ferromagnetic resonance; Author-Supplied Keyword: magnetically tunable bandpass filters; Author-Supplied Keyword: yttrium iron garnet (YIG)–gadolinium gallium garnet (YIG-GGG); Number of Pages: 6p; Document Type: Article L3 - 10.1109/TMAG.2013.2253114 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=89927238&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Payne, Brian C. AU - Bredthauer, Jeffery T1 - The LSI or DCA decision: investing strategies for the lump sum averse. JO - International Journal of Financial Services Management JF - International Journal of Financial Services Management Y1 - 2013/09// VL - 6 IS - 4 M3 - Article SP - 263 EP - 272 SN - 14606712 AB - A recent study finds that a Lump Sum Investing (LSI) strategy outperformed a Dollar Cost Averaging (DCA) strategy approximately two-thirds of the time between January 1927 and December 2011 using multiple DCA periods and adjusting for risk. This study extends these findings by examining other risk adjustment measures as well as analysing shorter DCA periods and timing considerations. Focusing on the US stock market for the past 20 years, the LSI strategy does not dominate DCA as strongly as the prior results indicate. Instead, the decision is sensitive to the DCA duration, the timing of strategy implementation and the risk-adjustment method considered. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Financial Services Management is the property of Inderscience Enterprises Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LUMP sum distributions (Pensions) KW - DOLLAR cost averaging KW - PORTFOLIO management (Investments) KW - INVESTMENTS KW - FINANCIAL services industry KW - DCA KW - dollar cost averaging KW - investment strategies KW - LSI KW - lump sum averse KW - lump sum investing KW - market timing KW - risk adjustment KW - United States KW - USA N1 - Accession Number: 94741416; Payne, Brian C. 1; Bredthauer, Jeffery 2; Affiliations: 1: Department of Management, United States Air Force Academy, CO, USA; 2: Department of Finance, Banking and Real Estate, College of Business Administration, University of Nebraska-Omaha, Mammel Hall, NE, USA; Issue Info: 2013, Vol. 6 Issue 4, p263; Thesaurus Term: LUMP sum distributions (Pensions); Thesaurus Term: DOLLAR cost averaging; Thesaurus Term: PORTFOLIO management (Investments); Thesaurus Term: INVESTMENTS; Thesaurus Term: FINANCIAL services industry; Author-Supplied Keyword: DCA; Author-Supplied Keyword: dollar cost averaging; Author-Supplied Keyword: investment strategies; Author-Supplied Keyword: LSI; Author-Supplied Keyword: lump sum averse; Author-Supplied Keyword: lump sum investing; Author-Supplied Keyword: market timing; Author-Supplied Keyword: risk adjustment; Author-Supplied Keyword: United States; Author-Supplied Keyword: USA; NAICS/Industry Codes: 522291 Consumer Lending; NAICS/Industry Codes: 523930 Investment Advice; NAICS/Industry Codes: 523999 Miscellaneous Financial Investment Activities; NAICS/Industry Codes: 523920 Portfolio Management; Number of Pages: 10p; Document Type: Article L3 - 10.1504/IJFSM.2013.059603 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=94741416&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Kastenberg, Joshua1,2 T1 - NEARING THIRTY YEARS: THE BURGER COURT, STRICKLAND V. WASHINGTON, AND THE PARAMETERS OF THE RIGHT TO COUNSEL. JO - Journal of Appellate Practice & Process JF - Journal of Appellate Practice & Process J1 - Journal of Appellate Practice & Process PY - 2013///Fall2013 Y1 - 2013///Fall2013 VL - 14 IS - 2 CP - 2 M3 - Article SP - 215 EP - 265 SN - 15334724 AB - The article discusses the legal history of the U.S Supreme Court case Strickland v. Washington dealing with the judicial standards governing ineffective-assistance assertions. Topics discussed include the Supreme Court case Powell v. Alabama involving claims of ineffective counsel, the U.S Court of Appeals for the 11th Circuit case United States v. DeCoster, and Supreme Court case Miranda v. Arizona. It informs that the Court denied certiorari in cases involving claims of ineffective counsel. KW - Right to counsel KW - Miranda v. Arizona (Supreme Court case) KW - Strickland v. Washington (Supreme Court case) KW - Powell v. Alabama (Supreme Court case) KW - Right to counsel -- United States -- Lawsuits & claims KW - United States. Supreme Court KW - United States. Court of Appeals (11th Circuit) N1 - Accession Number: 96906947; Authors:Kastenberg, Joshua 1,2; Affiliations: 1: Lieutenant Colonel, United States Air Force; 2: Military Judge, United States Air Force, Trial Judiciary; Subject: United States. Supreme Court; Subject: Strickland v. Washington (Supreme Court case); Subject: Powell v. Alabama (Supreme Court case); Subject: Right to counsel; Subject: Right to counsel -- United States -- Lawsuits & claims; Subject: United States. Court of Appeals (11th Circuit); Subject: Miranda v. Arizona (Supreme Court case); Number of Pages: 51p; Court Cases: Strickland v. Washington; Powell v. Alabama; United States v. DeCoster; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=96906947&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR AU - Alway-Cooper, Rebecca M AU - Theodore, Merlin AU - Anderson, David P AU - Ogale, Amod A T1 - Transient heat flow in unidirectional fiber–polymer composites during laser flash analysis: Experimental measurements and finite element modeling. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2013/09// VL - 47 IS - 19 M3 - Article SP - 2399 EP - 2411 SN - 00219983 AB - Laser flash analysis (LFA), an unsteady-state technique originally developed for measuring the thermal diffusivity of homogenous materials, was used to estimate the thermal conductivity of carbon fibers consolidated in an epoxy matrix to form axially aligned unidirectional composites. Experimental studies were conducted for P-25 and K-1100 mesophase pitch-based carbon fibers whose conductivity values bracket almost two orders of magnitude (∼10 and 1000 W/m·K). Experimentally determined fiber thermal conductivity values were generally consistent with those cited in the literature after appropriate corrections were applied to account for the extremely high conductivity (low thermal resistance) of highly graphitic fibers, relative to the graphite coating. Finite element analysis was used to simulate heat flow patterns that may occur in a uniaxial fiber–polymer composite due to the large differences in the thermal conductivities of carbon fibers and polymer matrices. Simulations reveal that fiber thermal conductivity is accurately determined from composite response for high volume fraction of fibers (≥0.6) regardless of fiber conductivity, or for lower conductivity fibers (10–100 W/m·K) regardless of volume fractions. However, for composites containing high thermal conductivity fibers (100–1000 W/m·K) at low volume fractions (≤0.2), fiber thermal conductivity may not be accurately determined due to transverse heat flow within the graphite layers that channel heat through the highly conductive fiber. Thus, under certain conditions, heat flow paths deviate from the one-dimensional heat flow assumption inherent to laser flash analysis and rule-of-mixtures. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON fibers KW - THERMAL conductivity KW - FINITE element method KW - THERMAL diffusivity KW - HEAT equation KW - Carbon fiber KW - finite element analysis KW - laser flash analysis KW - thermal conductivity N1 - Accession Number: 89629928; Alway-Cooper, Rebecca M 1; Theodore, Merlin 2; Anderson, David P 3; Ogale, Amod A 4; Source Information: Sep2013, Vol. 47 Issue 19, p2399; Subject: CARBON fibers; Subject: THERMAL conductivity; Subject: FINITE element method; Subject: THERMAL diffusivity; Subject: HEAT equation; Author-Supplied Keyword: Carbon fiber; Author-Supplied Keyword: finite element analysis; Author-Supplied Keyword: laser flash analysis; Author-Supplied Keyword: thermal conductivity; Number of Pages: 13p; Document Type: Article; Full Text Word Count: 6603 L3 - 10.1177/0021998312458130 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=89629928&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Chao, Susan Y. AU - Zarzabal, Lee A. AU - Walker, Sandra M. AU - Herzog, Catherine M. AU - Eilerman, Patricia A. AU - Luce, Beverly K. AU - Carnahan, David H. T1 - Estimating Diabetes Prevalence in the Military Health System Population From 2006 to 2010. JO - Military Medicine JF - Military Medicine Y1 - 2013/09// VL - 178 IS - 9 M3 - Article SP - 986 EP - 993 PB - AMSUS SN - 00264075 AB - Evidence-based articles have demonstrated an increase in diabetes prevalence, but diabetes prevalence in the enrolled Military Health System population was previously understudied. Variability in diabetes prevalence rates calculated from 5 groups of algorithms was examined in the Military Health System population (3 million enrollees per year) from fiscal years 2006 to 2010. Time trend analysis and rate comparisons to the U.S. population were also performed. Increasing linear trends in diabetes prevalence from 2006 to 2010 were seen in all algorithms, though considerable rate variation was observed within each study year. Prevalence increased with age, except for a slight decrease in those ≥75 years. Overall diagnosed diabetes prevalence ranged from 7.26% to 11.22% in 2006 and from 8.29% to 13.55% in 2010. Prevalence among active duty members remained stable, but a significant upward trend was observed among nonactive duty members across study years. Age-standardized rates among nonactive duty females were higher than the U.S. population rates from 2006 to 2010. This study demonstrates prevalence rate variability because of differing case algorithms and shows evidence of a growing diabetes population in the Military Health System, specifically within the nonactive duty 45 years and older demographic groups. Further research of this population should focus on validation of case definitions. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIABETES -- Research KW - MILITARY medicine -- Research KW - MILITARY personnel -- Diseases KW - MILITARY personnel -- Health KW - POPULATION N1 - Accession Number: 90276639; Chao, Susan Y. 1; Zarzabal, Lee A. 1,2; Walker, Sandra M. 1; Herzog, Catherine M. 1; Eilerman, Patricia A. 1; Luce, Beverly K. 1; Carnahan, David H. 1; Source Information: Sep2013, Vol. 178 Issue 9, p986; Subject: DIABETES -- Research; Subject: MILITARY medicine -- Research; Subject: MILITARY personnel -- Diseases; Subject: MILITARY personnel -- Health; Subject: POPULATION; Number of Pages: 8p; Illustrations: 3 Charts, 2 Graphs; Document Type: Article L3 - 10.7205/M1LMED-D-13-00147 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=90276639&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 107911542 T1 - Estimating diabetes prevalence in the military health system population from 2006 to 2010. AU - Chao, Susan Y AU - Zarzabal, Lee A AU - Walker, Sandra M AU - Herzog, Catherine M AU - Eilerman, Patricia A AU - Luce, Beverly K AU - Carnahan, David H Y1 - 2013/09// N1 - Accession Number: 107911542. Language: English. Entry Date: 20140620. Revision Date: 20150712. Publication Type: Journal Article; research. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services. NLM UID: 2984771R. KW - Diabetes Mellitus -- Epidemiology KW - Health Benefit Plans, Employee -- Statistics and Numerical Data KW - Military Personnel -- Statistics and Numerical Data KW - Adolescence KW - Adult KW - Aged KW - Algorithms KW - Female KW - Human KW - Male KW - Middle Age KW - Prevalence KW - United States KW - Young Adult SP - 986 EP - 993 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 178 IS - 9 CY - Bethesda, Maryland PB - AMSUS AB - Evidence-based articles have demonstrated an increase in diabetes prevalence, but diabetes prevalence in the enrolled Military Health System population was previously understudied. Variability in diabetes prevalence rates calculated from 5 groups of algorithms was examined in the Military Health System population (3 million enrollees per year) from fiscal years 2006 to 2010. Time trend analysis and rate comparisons to the U.S. population were also performed. Increasing linear trends in diabetes prevalence from 2006 to 2010 were seen in all algorithms, though considerable rate variation was observed within each study year. Prevalence increased with age, except for a slight decrease in those >=75 years. Overall diagnosed diabetes prevalence ranged from 7.26% to 11.22% in 2006 and from 8.29% to 13.55% in 2010. Prevalence among active duty members remained stable, but a significant upward trend was observed among nonactive duty members across study years. Age-standardized rates among nonactive duty females were higher than the U.S. population rates from 2006 to 2010. This study demonstrates prevalence rate variability because of differing case algorithms and shows evidence of a growing diabetes population in the Military Health System, specifically within the nonactive duty 45 years and older demographic groups. Further research of this population should focus on validation of case definitions. SN - 0026-4075 AD - Healthcare Informatics Division, United States Air Force Medical Support Agency, 3515 S General McMullen Suite 200, San Antonio, TX 78226. U2 - PMID: 24005548. DO - 10.7205/MILMED-D-13-00147 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107911542&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Reid, Michael R. AU - Scharfe, David B. AU - Webb, Rebecca N. T1 - Computational evaluation of a latent heat energy storage system. JO - Solar Energy JF - Solar Energy Y1 - 2013/09// VL - 95 M3 - Article SP - 99 EP - 105 SN - 0038092X AB - Abstract: A system capable of receiving, absorbing, and converting solar energy was designed for use on a satellite in low Earth orbit. The proposed system, an alternative to conventional photovoltaic panels paired with electrochemical batteries, has at the core of its design a latent heat based energy storage system that employs silicon as the phase change material. Thermal to electric conversion is achieved by thermophotovoltaic cells that then provide electrical power for various satellite components. The system was evaluated computationally. Through prediction of the melt and solidification fronts the amount of solar irradiation required to fully utilize the phase change material was determined to be between 4 and 5kW depending on the orbit. The average temperature of the emitter, used to power the thermophotovoltaic cells, was also predicted throughout an orbit. The emitter temperature range, 1450–1850K, is well-suited for use with commercially available gallium antimony cells. [Copyright &y& Elsevier] AB - Copyright of Solar Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Heat storage KW - Antimony KW - Latent heat KW - Thermophotovoltaic cells KW - Phase change materials KW - Prediction models KW - Phase change material KW - Radiative heat transfer KW - Thermal energy storage KW - Thermophotovoltaic cell N1 - Accession Number: 89615290; Reid, Michael R. 1; Scharfe, David B. 2; Webb, Rebecca N. 3; Email Address: rwebb@uccs.edu; Affiliations: 1: United States Air Force, Colorado Springs, CO, USA; 2: ERC, Inc., Edwards AFB, CA, USA; 3: Department of Mechanical and Aerospace Engineering, University of Colorado Colorado Springs, Colorado Springs, CO, USA; Issue Info: Sep2013, Vol. 95, p99; Thesaurus Term: Heat storage; Thesaurus Term: Antimony; Subject Term: Latent heat; Subject Term: Thermophotovoltaic cells; Subject Term: Phase change materials; Subject Term: Prediction models; Author-Supplied Keyword: Phase change material; Author-Supplied Keyword: Radiative heat transfer; Author-Supplied Keyword: Thermal energy storage; Author-Supplied Keyword: Thermophotovoltaic cell; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.solener.2013.06.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=89615290&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Clark, Michael D. AU - Leever, Benjamin J. T1 - Analysis of ITO cleaning protocol on surface properties and polymer: Fullerene bulk heterojunction solar cell performance. JO - Solar Energy Materials & Solar Cells JF - Solar Energy Materials & Solar Cells Y1 - 2013/09// VL - 116 M3 - Article SP - 270 EP - 274 SN - 09270248 AB - Abstract: In the traditional organic solar cell architecture, indium tin oxide (ITO) serves as the transparent electrode and substrate for solution-cast device layers. Hydrophobic contaminants are known to modify ITO wettability and other properties, making selection of an effective cleaning scheme essential. In this work, we demonstrate that certain solvent-based routines provide essentially equivalent surface properties as coupled solvent+UV-ozone protocols reported in literature. Surface energy analysis further reveals that solvent selection can effectively tune ITO charge transport. Fabricated devices showed comparable performance, indicating that interfacial resistances are not limiting factors in the model OSC system and that UV-ozone exposure could be eliminated to reduce commercialization costs. [Copyright &y& Elsevier] AB - Copyright of Solar Energy Materials & Solar Cells is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Solar cells KW - Solvents KW - Fullerenes KW - Indium tin oxide KW - Electrodes KW - Heterojunctions KW - Polymers KW - Cleaning KW - Organic electronics KW - Substrate cleaning KW - Surface energy KW - UV-ozone KW - X-ray photoelectron spectroscopy N1 - Accession Number: 89310406; Clark, Michael D. 1; Leever, Benjamin J. 1; Email Address: Benjamin.Leever@wpafb.af.mil; Affiliations: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Issue Info: Sep2013, Vol. 116, p270; Thesaurus Term: Solar cells; Thesaurus Term: Solvents; Thesaurus Term: Fullerenes; Subject Term: Indium tin oxide; Subject Term: Electrodes; Subject Term: Heterojunctions; Subject Term: Polymers; Subject Term: Cleaning; Author-Supplied Keyword: Organic electronics; Author-Supplied Keyword: Substrate cleaning; Author-Supplied Keyword: Surface energy; Author-Supplied Keyword: UV-ozone; Author-Supplied Keyword: X-ray photoelectron spectroscopy; NAICS/Industry Codes: 561720 Janitorial Services; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.solmat.2013.05.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=89310406&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2014-13513-006 AN - 2014-13513-006 AU - Rußwinkel, Nele AU - Moore, L. Richard Jr. AU - Gunzelmann, Glenn ED - Rußwinkel, Nele T1 - Task artifacts and strategic adaptation in the change signal task. JF - Cognitive Systems Research JO - Cognitive Systems Research JA - Cogn Syst Res Y1 - 2013/09// VL - 24 SP - 35 EP - 42 CY - Netherlands PB - Elsevier Science SN - 2214-4366 SN - 1389-0417 AD - Moore, L. Richard Jr., L3 Communications, 5950 East Sossaman Road, Suite 121, Mesa, AZ, US, 85212 N1 - Accession Number: 2014-13513-006. Partial author list: First Author & Affiliation: Rußwinkel, Nele; L3 Communications, Mesa, AZ, US. Release Date: 20140630. Correction Date: 20160407. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Conference Information: International Conference on Cognitive Modeling, 11th, 2012, Berlin, Germany. Conference Note: The results described here were originally presented at the aforementioned conference. Major Descriptor: Cognitive Processes; Cognitive Science; Task Analysis. Minor Descriptor: Models; Statistical Regression. Classification: Cognitive Processes (2340). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Change Signal Task; Two-Alternative Forced-Choice Task; Reaction Time Task; Psychomotor Vigilance Task. Methodology: Empirical Study; Experimental Replication; Quantitative Study. References Available: Y. Page Count: 8. Issue Publication Date: Sep, 2013. Publication History: First Posted Date: Jan 7, 2013. Copyright Statement: All rights reserved. Elsevier B.V. 2013. AB - The change signal task is a variant of a two-alternative forced-choice (2AFC) task where the initial stimulus is superseded with the alternative stimulus (the change signal) at a delay on a proportion of trials. Taking advantage of the overlap in task requirements, we present a single model that can perform both tasks, and we validate the model using the empirical data from participants who performed them sequentially. The results confirmed the existence of a dynamic hedging strategy in the change signal task, and provided evidence against a role for cognitive fatigue in producing the slower response times with increased time on task. When fitting the 2AFC task, the model required adjustment to one architectural parameter while the rest were left to defaults. That parameter was then constrained while fitting the remaining three task-specific parameters for the change signal task. This effectively reduced a degree of freedom in the model fitting process, and increased confidence in the model as it closely matched human performance in multiple tasks. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - change signal KW - cognitive model KW - two-alternative forced-choice KW - task artifacts KW - cognitive processes KW - 2013 KW - Cognitive Processes KW - Cognitive Science KW - Task Analysis KW - Models KW - Statistical Regression KW - 2013 U1 - Sponsor: Air Force Office of Scientific Research. Grant: 10RH04COR. Recipients: No recipient indicated DO - 10.1016/j.cogsys.2012.12.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-13513-006&site=ehost-live&scope=site UR - larry.moore@L-3com.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-33230-001 AN - 2013-33230-001 AU - Walsh, Matthew M. AU - Einstein, Evan H. AU - Gluck, Kevin A. T1 - A quantification of robustness. JF - Journal of Applied Research in Memory and Cognition JO - Journal of Applied Research in Memory and Cognition JA - J Appl Res Mem Cogn Y1 - 2013/09// VL - 2 IS - 3 SP - 137 EP - 148 CY - Netherlands PB - Elsevier Science SN - 2211-3681 AD - Walsh, Matthew M., Cognitive Models and Agents Branch, 711 HPW/RHAC, 2620 Q Street, Building 852, Wright-Patterson AFB, OH, US, 45433 N1 - Accession Number: 2013-33230-001. Partial author list: First Author & Affiliation: Walsh, Matthew M.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Release Date: 20131216. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Science; Decision Making; Heuristics; Human Factors Engineering; Computational Modeling. Classification: Human Factors Engineering (4010); Artificial Intelligence & Expert Systems (4120). Population: Human (10). Methodology: Empirical Study; Mathematical Model; Quantitative Study; Scientific Simulation. References Available: Y. Page Count: 12. Issue Publication Date: Sep, 2013. Publication History: First Posted Date: Aug 9, 2013; Accepted Date: Jul 23, 2013; Revised Date: Jul 19, 2013; First Submitted Date: Sep 20, 2012. Copyright Statement: Published by Elsevier Inc. All rights reserved. Society for Applied Research in Memory and Cognition. 2013. AB - Robustness is an important construct in domains as diverse as evolutionary biology, structural engineering, and decision-making. Unfortunately, in many domains, most relevantly cognitive science, considerations of robustness end with vague semantic references. Little attention is paid to formal analysis. The aim of this paper is to initiate a discussion in the scientific community regarding methods for quantifying and analyzing robustness. To this end, we propose a means for assessing robustness that may supplant the current ambiguous use of the term. We demonstrate our quantitative approach using examples of heuristic-based decision processes, selected due to their explicit association with robustness in the psychological literature. These examples serve to illustrate basic properties of our general methodology for quantifying robustness. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - robustness quantification KW - cognitive science KW - heuristics KW - structural engineering KW - decision processes KW - computational models KW - 2013 KW - Cognitive Science KW - Decision Making KW - Heuristics KW - Human Factors Engineering KW - Computational Modeling KW - 2013 DO - 10.1016/j.jarmac.2013.07.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-33230-001&site=ehost-live&scope=site UR - mmw188@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-25676-001 AN - 2013-25676-001 AU - Zhou, Zhi-Hua AU - Lee, Wee Sun AU - Hoi, Steven C. H. AU - Buntine, Wray AU - Motoda, Hiroshi T1 - Introduction: Special issue of selected papers of ACML 2012. JF - Machine Learning JO - Machine Learning JA - Mach Learn Y1 - 2013/09// VL - 92 IS - 2-3 SP - 221 EP - 223 CY - Germany PB - Springer SN - 0885-6125 SN - 1573-0565 AD - Zhou, Zhi-Hua, National Key Laboratory for Novel Software Technology, Nanjing University, Nanjing, China, 210023 N1 - Accession Number: 2013-25676-001. Partial author list: First Author & Affiliation: Zhou, Zhi-Hua; National Key Laboratory for Novel Software Technology, Nanjing University, Nanjing, China. Release Date: 20130819. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Editorial. Language: English. Major Descriptor: Graphical Displays; Machine Learning; Normal Distribution. Minor Descriptor: Models; Probability. Classification: Artificial Intelligence & Expert Systems (4120). Page Count: 3. Issue Publication Date: Sep, 2013. Publication History: First Posted Date: May 18, 2013; Accepted Date: May 8, 2013; First Submitted Date: Apr 26, 2013. Copyright Statement: The Author(s). 2013. AB - This editorial provides an overview of the articles selected for the fourth Asian Conference on Machine Learning which was held in Singapore, during November 2012. One of the papers presented a full Bayesian approach to object matching in the context where no distance measure is available and the objects are represented by a feature vector. A latent binary permutation matrix for alignment is combined with a Bayesian Canonical Correlation Analysis as a basis for a distance measure. Another article presented a probabilistic approach to reconstructing Gaussian graphical models by extending the central Wishart model to using a likelihood depending only on pairwise distances. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - machine learning KW - permutation matrix KW - probabilistic approach KW - Gaussian graphical models KW - 2013 KW - Graphical Displays KW - Machine Learning KW - Normal Distribution KW - Models KW - Probability KW - 2013 DO - 10.1007/s10994-013-5384-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-25676-001&site=ehost-live&scope=site UR - ORCID: 0000-0001-9292-1015 UR - UR - motoda@ar.sanken.osaka-u.ac.jp UR - Wray.Buntine@nicta.com.au UR - chhoi@ntu.edu.sg UR - leews@comp.nus.edu.sg UR - zhouzh@lamda.nju.edu.cn DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-22014-002 AN - 2013-22014-002 AU - Taylor, Daniel J. AU - Bramoweth, Adam D. AU - Grieser, Emily A. AU - Tatum, Jolyn I. AU - Roane, Brandy M. T1 - Epidemiology of insomnia in college students: Relationship with mental health, quality of life, and substance use difficulties. JF - Behavior Therapy JO - Behavior Therapy JA - Behav Ther Y1 - 2013/09// VL - 44 IS - 3 SP - 339 EP - 348 CY - Netherlands PB - Elsevier Science SN - 0005-7894 AD - Taylor, Daniel J., University of North Texas, Department of Psychology, 1155 Union Circle #311280, Denton, TX, US, 76203-5017 N1 - Accession Number: 2013-22014-002. PMID: 23768662 Partial author list: First Author & Affiliation: Taylor, Daniel J.; University of North Texas, Denton, TX, US. Other Publishers: Association for Advancement of Behavior Therapy. Release Date: 20130722. Correction Date: 20160616. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Taylor, Daniel J. Major Descriptor: College Students; Drug Abuse; Epidemiology; Insomnia; Mental Health. Minor Descriptor: Fatigue; Major Depression; Quality of Life. Classification: Psychological & Physical Disorders (3200). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Quick Inventory of Depressive Symptomatology; Insomnia Severity Index; State-Trait Anxiety Inventory, Trait Scale; Quality of Life Enjoyment and Satisfaction Questionnaire–Short Form; Marijuana Problem Scale; Alcohol Use Disorders Identification Test DOI: 10.1037/t01528-000; State-Trait Anxiety Inventory for Adults DOI: 10.1037/t06496-000; Sleep Diary DOI: 10.1037/t15896-000; Health Questionnaire; Multidimensional Fatigue Inventory DOI: 10.1037/t15271-000; Epworth Sleepiness Scale DOI: 10.1037/t07081-000; Perceived Stress Scale DOI: 10.1037/t02889-000; Pittsburgh Sleep Quality Index DOI: 10.1037/t05178-000; Quality of Life. Methodology: Empirical Study; Interview; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Sep, 2013. Publication History: First Posted Date: Dec 19, 2012; Accepted Date: Dec 6, 2012; First Submitted Date: Jun 20, 2012. Copyright Statement: Published by Elsevier Ltd. All rights reserved. Association for Behavioral and Cognitive Therapies. 2012. AB - The purpose of this study was to evaluate the prevalence and correlates of insomnia using rigorous diagnostic criteria and a comprehensive assessment battery. In a large sample (N=1,074) of college students (mean age 20.39 years), participants were asked to complete a week-long sleep diary and comprehensive questionnaire packet assessing recommended daytime functioning domains (i.e., fatigue, quality of life, depression, anxiety, stress, academic performance, substance use) during the academic year. A significant portion of this sample of college students met proposed DSM-5 criteria for chronic insomnia (9.5%). The chronic insomnia group reported significantly worse sleep, fatigue, depression, anxiety, stress, and quality of life, and greater hypnotic and stimulant use for sleep problems. There were no differences between groups on excessive daytime sleepiness, academic performance, or substance use. This was a rigorous and comprehensive assessment of the prevalence and psychosocial correlates of insomnia. Insomnia is a significant problem in college students and should be regularly assessed. More research is also needed to guide treatment in this population. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - epidemiology KW - insomnia KW - college students KW - mental health KW - quality of life KW - substance use difficulties KW - fatigue KW - depression KW - 2013 KW - College Students KW - Drug Abuse KW - Epidemiology KW - Insomnia KW - Mental Health KW - Fatigue KW - Major Depression KW - Quality of Life KW - 2013 U1 - Sponsor: University of North Texas, US. Grant: G69250. Recipients: Taylor, Daniel J. U1 - Sponsor: National Institute of Allergy and Infectious Diseases, US. Grant: A1085558. Recipients: Taylor, Daniel J. DO - 10.1016/j.beth.2012.12.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-22014-002&site=ehost-live&scope=site UR - ORCID: 0000-0002-3535-0292 UR - UR - djtaylor@unt.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-36605-031 AN - 2013-36605-031 AU - Kwak, Jae AU - Grigsby, Claude C. AU - Preti, George AU - Rizki, Mateen M. AU - Yamazaki, Kunio AU - Beauchamp, Gary K. T1 - Changes in volatile compounds of mouse urine as it ages: Their interactions with water and urinary proteins. JF - Physiology & Behavior JO - Physiology & Behavior JA - Physiol Behav Y1 - 2013/08/15/ VL - 120 SP - 211 EP - 219 CY - Netherlands PB - Elsevier Science SN - 0031-9384 AD - Kwak, Jae, Human Signatures Branch, Forecasting Division, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, US, 45433 N1 - Accession Number: 2013-36605-031. PMID: 23958471 Partial author list: First Author & Affiliation: Kwak, Jae; Monell Chemical Senses Center, Philadelphia, PA, US. Release Date: 20131118. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Chemicals; Social Interaction; Urine. Minor Descriptor: Mice; Proteins. Classification: Psychopharmacology (2580). Population: Animal (20); Male (30); Female (40). Methodology: Empirical Study; Quantitative Study. Supplemental Data: Other Internet. References Available: Y. Page Count: 9. Issue Publication Date: Aug 15, 2013. Publication History: Accepted Date: Aug 7, 2013; Revised Date: Apr 6, 2013; First Submitted Date: Oct 4, 2012. Copyright Statement: All rights reserved. Elsevier Inc. 2013. AB - Mice release a variety of chemical signals, particularly through urine, which mediate social interactions and endocrine function. Studies have been conducted to investigate the stability of urinary chemosignals in mice. Neuroendocrine and behavioral responses of mice to urine samples of male and female conspecifics which have aged for different amounts of time have been examined, demonstrating that the quality and intensity of signaling molecules in urine change over time. In this study, we monitored changes in volatile organic compounds (VOCs) released from male and female mouse urine following aging the urine samples. Substantial amounts of some VOCs were lost during the aging process of urine, whereas other VOCs increased. Considerable portions of the VOCs which exhibited the increased release were shown to have previously been dissolved in water and subsequently released as the urine dried. We also demonstrated that some VOCs decreased slightly due to their binding with the major urinary proteins (MUPs) and identified MUP ligands whose headspace concentrations increased as the urine aged. Our results underscore the important role of MUPs and the hydration status in the release of VOCs in urine, which may largely account for the changes in the quality and intensity of urinary signals over time. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - volatile compounds KW - mice KW - urine proteins KW - social interactions KW - chemical signals KW - 2013 KW - Chemicals KW - Social Interaction KW - Urine KW - Mice KW - Proteins KW - 2013 U1 - Sponsor: Air Force, UES. Grant: FA8650-10-C-6152. Recipients: No recipient indicated U1 - Sponsor: US Army Research Office, US. Grant: W911NF-11-1-0087. Recipients: No recipient indicated DO - 10.1016/j.physbeh.2013.08.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-36605-031&site=ehost-live&scope=site UR - UR - ORCID: 0000-0003-4216-2019 UR - beauchamp@monell.org UR - mateen.rizki@wright.edu UR - preti@pobox.upenn.edu UR - Claude.Grigsby@wpafb.af.mil UR - jaekwak@hotmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Garrett, Teresa L. AU - Joshi, Kaushal AU - Rapp, Christine M. AU - Chapleau, Molly AU - Cool, David R. AU - Schlager, John J. AU - Lucot, James B. T1 - The effects of 8-OH-DPAT on neuroinflammation after sarin exposure in mice. JO - Toxicology JF - Toxicology Y1 - 2013/08/09/ VL - 310 M3 - Article SP - 22 EP - 28 SN - 0300483X AB - Highlights: [•] DPAT decreased GFAP staining while other 5-HT1A agonists did not. [•] DPAT remained effective when administered up to 2h after the toxic challenge. [•] DPAT reversed the increase in IL-1β but did not reduce positive TUNEL staining. [•] WAY-100635, a silent 5-HT1A antagonist had no effect on DPAT afforded protection. [•] The effects produced by DPAT appear to lie within its secondary pharmacology. [ABSTRACT FROM AUTHOR] AB - Copyright of Toxicology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISEASES KW - Sarin KW - Toxicology KW - Pharmacology KW - Neurons KW - Inflammation -- Animal models KW - Serotonin antagonists KW - Glial fibrillary acidic protein KW - Mice as laboratory animals KW - 5-HT1A agonist KW - Chemical warfare agent KW - Neuroinflammation KW - Organophosphate KW - Protection N1 - Accession Number: 89510803; Garrett, Teresa L. 1; Joshi, Kaushal 1; Rapp, Christine M. 1; Chapleau, Molly 1; Cool, David R. 1; Schlager, John J. 2; Lucot, James B. 1; Email Address: james.lucot@wright.edu; Affiliations: 1: Pharmacology & Toxicology, Boonshoft School of Medicine, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH 45435, USA; 2: Molecular Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH 45433, USA; Issue Info: Aug2013, Vol. 310, p22; Thesaurus Term: DISEASES; Thesaurus Term: Sarin; Thesaurus Term: Toxicology; Thesaurus Term: Pharmacology; Subject Term: Neurons; Subject Term: Inflammation -- Animal models; Subject Term: Serotonin antagonists; Subject Term: Glial fibrillary acidic protein; Subject Term: Mice as laboratory animals; Author-Supplied Keyword: 5-HT1A agonist; Author-Supplied Keyword: Chemical warfare agent; Author-Supplied Keyword: Neuroinflammation; Author-Supplied Keyword: Organophosphate; Author-Supplied Keyword: Protection; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.tox.2013.05.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=89510803&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Potyrailo, Radislav AU - Naik, Rajesh R. T1 - Bionanomaterials and Bioinspired Nanostructures for Selective Vapor Sensing. JO - Annual Review of Materials Research JF - Annual Review of Materials Research Y1 - 2013/08// VL - 43 IS - 1 M3 - Article SP - 307 EP - 334 SN - 15317331 AB - At present, monitoring of air at the workplace, in urban environments, and on battlefields; exhaled air from medical patients; air in packaged food containers; and so forth can be accomplished with different types of analytical instruments. Vapor sensors have their niche in these measurements when an unobtrusive, low-power, and cost-sensitive technical solution is required. Unfortunately, existing vapor sensors often degrade their vapor-quantitation accuracy in the presence of high levels of interferences and cannot quantitate several components in complex gas mixtures. Thus, new sensing approaches with improved sensor selectivity are required. This technological task can be accomplished by the careful design of sensing materials with new performance properties and by coupling these materials with the suitable physical transducers. This review is focused on the assessment of the capabilities of bionanomaterials and bioinspired nanostructures for selective vapor sensing. We demonstrate that these sensing materials can operate with diverse transducers based on electrical, mechanical, and optical readout principles and can provide vapor-response selectivity previously unattainable by using other sensing materials. This ability for selective vapor sensing provides opportunities to significantly impact the major directions in development and application scenarios of vapor sensors. [ABSTRACT FROM AUTHOR] AB - Copyright of Annual Review of Materials Research is the property of Annual Reviews Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WORK environment KW - NANOSTRUCTURED materials KW - MATERIALS science KW - NANOSTRUCTURES KW - GAS mixtures KW - battery-independent sensor operation KW - bioinspired nanostructures KW - bionanomaterials KW - distributed sensor networks KW - multivariable individual sensors KW - unobtrusive sensors KW - vapor sensors KW - wireless sensing N1 - Accession Number: 88907071; Potyrailo, Radislav 1; Naik, Rajesh R. 2; Affiliations: 1: Chemistry and Chemical Engineering, General Electric Global Research Center, Niskayuna, New York 12309; email:; 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Issue Info: 2013, Vol. 43 Issue 1, p307; Thesaurus Term: WORK environment; Subject Term: NANOSTRUCTURED materials; Subject Term: MATERIALS science; Subject Term: NANOSTRUCTURES; Subject Term: GAS mixtures; Author-Supplied Keyword: battery-independent sensor operation; Author-Supplied Keyword: bioinspired nanostructures; Author-Supplied Keyword: bionanomaterials; Author-Supplied Keyword: distributed sensor networks; Author-Supplied Keyword: multivariable individual sensors; Author-Supplied Keyword: unobtrusive sensors; Author-Supplied Keyword: vapor sensors; Author-Supplied Keyword: wireless sensing; Number of Pages: 26p; Document Type: Article L3 - 10.1146/annurev-matsci-071312-121710 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=88907071&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Crookes-Goodson, Wendy J. AU - Bojanowski, Caitlin L. AU - Kay, Michelle L. AU - Lloyd, Pamela F. AU - Blankemeier, Andrew AU - Hurtubise, Jennifer M. AU - Singh, Kristi M. AU - Barlow, Daniel E. AU - Ladouceur, Harold D. AU - Matt Eby, D. AU - Johnson, Glenn R. AU - Mirau, Peter A. AU - Pehrsson, Pehr E. AU - Fraser, Hamish L. AU - Russell, John N. T1 - The impact of culture medium on the development and physiology of biofilms of Pseudomonas fluorescens formed on polyurethane paint. JO - Biofouling JF - Biofouling Y1 - 2013/08// VL - 29 IS - 6 M3 - Article SP - 601 EP - 615 SN - 08927014 AB - Microbial biofilms cause the deterioration of polymeric coatings such as polyurethanes (PUs). In many cases, microbes have been shown to use the PU as a nutrient source. The interaction between biofilms and nutritive substrata is complex, since both the medium and the substratum can provide nutrients that affect biofilm formation and biodeterioration. Historically, studies of PU biodeterioration have monitored the planktonic cells in the medium surrounding the material, not the biofilm. This study monitored planktonic and biofilm cell counts, and biofilm morphology, in long-term growth experiments conducted withPseudomonas fluorescensunder different nutrient conditions. Nutrients affected planktonic and biofilm cell numbers differently, and neither was representative of the system as a whole. Microscopic examination of the biofilm revealed the presence of intracellular storage granules in biofilms grown in M9 but not yeast extract salts medium. These granules are indicative of nutrient limitation and/or entry into stationary phase, which may impact the biodegradative capability of the biofilm. [ABSTRACT FROM AUTHOR] AB - Copyright of Biofouling is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSIOLOGY KW - Polyurethanes KW - Biodegradation KW - Phosphates KW - Biofilms KW - Pseudomonas fluorescens KW - Microscopy KW - biodeterioration KW - biofilms KW - phosphate storage KW - polyurethane N1 - Accession Number: 88429099; Crookes-Goodson, Wendy J. 1; Email Address: wendy.goodson@wpafb.af.mil; Bojanowski, Caitlin L. 1; Kay, Michelle L. 1; Lloyd, Pamela F. 1; Blankemeier, Andrew 2; Hurtubise, Jennifer M. 2; Singh, Kristi M. 1; Barlow, Daniel E. 3; Ladouceur, Harold D. 3; Matt Eby, D. 4; Johnson, Glenn R. 4; Mirau, Peter A. 1; Pehrsson, Pehr E. 3; Fraser, Hamish L. 2; Russell, John N. 3; Affiliations: 1: Soft Matter Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; 2: Department of Materials Science and Engineering, Center for Accelerated Maturation of Materials, The Ohio State University, Columbus, OH, USA; 3: Surface Chemistry Branch, US Naval Research Laboratory, Washington, DC, USA; 4: Applied Microbiology and Biochemistry Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Tyndall AFB, FL, USA; Issue Info: 2013, Vol. 29 Issue 6, p601; Thesaurus Term: PHYSIOLOGY; Thesaurus Term: Polyurethanes; Thesaurus Term: Biodegradation; Thesaurus Term: Phosphates; Subject Term: Biofilms; Subject Term: Pseudomonas fluorescens; Subject Term: Microscopy; Author-Supplied Keyword: biodeterioration; Author-Supplied Keyword: biofilms; Author-Supplied Keyword: phosphate storage; Author-Supplied Keyword: polyurethane; Number of Pages: 15p; Document Type: Article L3 - 10.1080/08927014.2013.783906 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=88429099&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 104226953 T1 - Using cerebral hemovelocity to measure workload during a spatialised auditory vigilance task in novice and experienced observers. AU - Shaw, Tyler H. AU - Satterfield, Kelly AU - Ramirez, Raul AU - Finomore, Victor Y1 - 2013/08// N1 - Accession Number: 104226953. Language: English. Entry Date: 20130923. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Europe; Peer Reviewed; UK & Ireland. Instrumentation: NASA-TLX. NLM UID: 0373220. KW - Workload KW - Cognition KW - Ultrasonography, Doppler KW - Attention KW - Military Personnel KW - Human KW - Radio KW - Right Brain Hemisphere KW - Adolescence KW - Adult KW - Male KW - Female KW - Analysis of Variance KW - Clinical Assessment Tools SP - 1251 EP - 1263 JO - Ergonomics JF - Ergonomics JA - ERGONOMICS VL - 56 IS - 8 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - This experiment was designed to assess cognitive load using transcranial Doppler sonography during the performance of a 40-min communication vigilance task in which messages were presented in different spatial locations or across a single monaural radio channel. In addition, some observers received 14 hours of practice to determine whether the neurophysiological measure was sensitive to a potential attenuation of workload. Critical messages were detected more frequently in the spatialised audio presentation mode condition, but there were no performance differences between experienced and novice observers. Neurophysiological data show that activation was greater in the novice condition than in the experienced condition, suggesting that novice observers expended greater effort. Furthermore, the neurophysiological measure showed more activation in the monaural radio condition than in the spatialised audio condition. The results support a resource account of vigilance and suggest that cerebral blood flow velocity can be used to diagnose the degree of attentional resource utilisation during vigilance tasks. Practitioner Summary: Due to high workload experienced during vigilance tasks, displays and methods are sought which enhance performance. This study shows that spatialising auditory communications in a monitoring task enhances performance and attenuates mental workload. Also, experience mitigates excessive workload, and cerebral hemovelocity can be used to diagnose attentional resource utilisation. SN - 0014-0139 AD - Department of Psychology, George Mason University, 4400 University Drive, Fairfax, VA, 22030, USA AD - Air Force Research Laboratory, Warfighter Interface Division, 711th Human Performance Wing, Wright-Patterson Air Force Base, OH, 45433, USA U2 - PMID: 23789766. DO - 10.1080/00140139.2013.809154 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104226953&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Chen, Mingjie AU - Abriola, Linda M. AU - Amos, Benjamin K. AU - Suchomel, Eric J. AU - Pennell, Kurt D. AU - Löffler, Frank E. AU - Christ, John A. T1 - Microbially enhanced dissolution and reductive dechlorination of PCE by a mixed culture: Model validation and sensitivity analysis. JO - Journal of Contaminant Hydrology JF - Journal of Contaminant Hydrology Y1 - 2013/08// VL - 151 M3 - Article SP - 117 EP - 130 SN - 01697722 AB - Abstract: Reductive dechlorination catalyzed by organohalide-respiring bacteria is often considered for remediation of non-aqueous phase liquid (NAPL) source zones due to cost savings, ease of implementation, regulatory acceptance, and sustainability. Despite knowledge of the key dechlorinators, an understanding of the processes and factors that control NAPL dissolution rates and detoxification (i.e., ethene formation) is lacking. A recent column study demonstrated a 5-fold cumulative enhancement in tetrachloroethene (PCE) dissolution and ethene formation (Amos et al., 2009). Spatial and temporal monitoring of key geochemical and microbial (i.e., Geobacter lovleyi and Dehalococcoides mccartyi strains) parameters in the column generated a data set used herein as the basis for refinement and testing of a multiphase, compositional transport model. The refined model is capable of simulating the reactive transport of multiple chemical constituents produced and consumed by organohalide-respiring bacteria and accounts for substrate limitations and competitive inhibition. Parameter estimation techniques were used to optimize the values of sensitive microbial kinetic parameters, including maximum utilization rates, biomass yield coefficients, and endogenous decay rates. Comparison and calibration of model simulations with the experimental data demonstrate that the model is able to accurately reproduce measured effluent concentrations, while delineating trends in dechlorinator growth and reductive dechlorination kinetics along the column. Sensitivity analyses performed on the optimized model parameters indicate that the rates of PCE and cis-1,2-dichloroethene (cis-DCE) transformation and Dehalococcoides growth govern bioenhanced dissolution, as long as electron donor (i.e., hydrogen flux) is not limiting. Dissolution enhancements were shown to be independent of cis-DCE accumulation; however, accumulation of cis-DCE, as well as column length and flow rate (i.e., column residence time), strongly influenced the extent of reductive dechlorination. When cis-DCE inhibition was neglected, the model over-predicted ethene production ten-fold, while reductions in residence time (i.e., a two-fold decrease in column length or two-fold increase in flow rate) resulted in a more than 70% decline in ethene production. These results suggest that spatial and temporal variations in microbial community composition and activity must be understood to model, predict, and manage bioenhanced NAPL dissolution. [Copyright &y& Elsevier] AB - Copyright of Journal of Contaminant Hydrology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Model validation KW - Tetrachloroethylene KW - Nonaqueous phase liquids KW - Dissolution (Chemistry) KW - Dechlorination (Chemistry) KW - Mixed culture (Microbiology) KW - Sensitivity analysis KW - Microbial respiration KW - Enhanced dissolution KW - Model verification KW - Modeling KW - NAPL KW - PCE KW - Reductive dechlorination N1 - Accession Number: 89432888; Chen, Mingjie 1; Abriola, Linda M. 2; Amos, Benjamin K. 3; Suchomel, Eric J. 4; Pennell, Kurt D. 2; Löffler, Frank E. 5,6,7; Christ, John A. 8; Email Address: john.christ@usafa.edu; Affiliations: 1: Atmospheric, Earth and Energy Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, United States; 2: Department of Civil and Environmental Engineering, Tufts University, Medford, MA 02155, United States; 3: Geosyntec Consultants, Kennesaw, GA 30144, United States; 4: Geosyntec Consultants, San Francisco, CA 94105, United States; 5: Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, TN 37996, United States; 6: Department of Microbiology, University of Tennessee, Knoxville, TN 37996, United States; 7: Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States; 8: Department of Civil and Environmental Engineering, US Air Force Academy, CO 80840, United States; Issue Info: Aug2013, Vol. 151, p117; Thesaurus Term: Model validation; Thesaurus Term: Tetrachloroethylene; Thesaurus Term: Nonaqueous phase liquids; Subject Term: Dissolution (Chemistry); Subject Term: Dechlorination (Chemistry); Subject Term: Mixed culture (Microbiology); Subject Term: Sensitivity analysis; Subject Term: Microbial respiration; Author-Supplied Keyword: Enhanced dissolution; Author-Supplied Keyword: Model verification; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: NAPL; Author-Supplied Keyword: PCE; Author-Supplied Keyword: Reductive dechlorination; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.jconhyd.2013.05.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=89432888&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 107909355 T1 - A culture of patient safety in military medicine. AU - Wyman, Daniel O Y1 - 2013/08// N1 - Accession Number: 107909355. Language: English. Entry Date: 20140516. Revision Date: 20150712. Publication Type: Journal Article. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services. NLM UID: 2984771R. KW - Military Medicine KW - Patient Safety KW - Organizational Culture KW - Multidisciplinary Care Team KW - Professional Role SP - 825 EP - 826 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 178 IS - 8 CY - Bethesda, Maryland PB - AMSUS SN - 0026-4075 AD - Headquarters Air Combat Command, 162 Dodd Boulevard, Langley AFB, VA 23665, USA. U2 - PMID: 23929040. DO - 10.7205/MILMED-D-13-00183 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107909355&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Wyman, Daniel O. T1 - A Culture of Patient Safety in Military Medicine. JO - Military Medicine JF - Military Medicine Y1 - 2013/08// VL - 178 IS - 8 M3 - Opinion SP - 825 EP - 826 PB - AMSUS SN - 00264075 AB - The article presents a commentary on the state of patient safety in military medicine in the U.S. in 2013. A report from the Institute of Medicine in 1999 revealed 44,000 to 98,000 deaths in U.S. hospitals because of preventable medical errors. Medical guidelines and policies are recognized for improving the efficiency, effectiveness and safety of the delivery of medical care. The role of health care teams in the execution of health care standards is also described. KW - PATIENTS -- Safety measures KW - MILITARY medicine KW - MEDICAL errors -- Statistics KW - INSTITUTE of Medicine (U.S.) KW - MEDICAL policy -- United States KW - MEDICAL care -- United States KW - HEALTH care teams N1 - Accession Number: 89767690; Wyman, Daniel O. 1; Source Information: Aug2013, Vol. 178 Issue 8, p825; Subject: PATIENTS -- Safety measures; Subject: MILITARY medicine; Subject: MEDICAL errors -- Statistics; Subject: INSTITUTE of Medicine (U.S.); Subject: MEDICAL policy -- United States; Subject: MEDICAL care -- United States; Subject: HEALTH care teams; Number of Pages: 2p; Document Type: Opinion L3 - 10.7205/MILMED-D-13-00183 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=89767690&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 2013-26486-006 AN - 2013-26486-006 AU - Shaw, Tyler H. AU - Funke, Matthew E. AU - Dillard, Michael AU - Funke, Gregory J. AU - Warm, Joel S. AU - Parasuraman, Raja T1 - Event-related cerebral hemodynamics reveal target-specific resource allocation for both 'go' and 'no-go' response-based vigilance tasks. JF - Brain and Cognition JO - Brain and Cognition JA - Brain Cogn Y1 - 2013/08// VL - 82 IS - 3 SP - 265 EP - 273 CY - Netherlands PB - Elsevier Science SN - 0278-2626 AD - Shaw, Tyler H., 4400 University Drive, MS3F5, Fairfax, VA, US, 22030-4444 N1 - Accession Number: 2013-26486-006. PMID: 23727665 Partial author list: First Author & Affiliation: Shaw, Tyler H.; Center of Excellence in Neuroergonomics, Technology, and Cognition (CENTEC), George Mason University, Department of Psychology, Fairfax, VA, US. Release Date: 20130826. Correction Date: 20140519. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Parasuraman, Raja. Major Descriptor: Cerebral Blood Flow; Evoked Potentials; Resource Allocation; Sustained Attention; Vigilance. Classification: Physiological Psychology & Neuroscience (2500). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Tests & Measures: Go Nogo Task; Sustained Attention to Response Task DOI: 10.1037/t28308-000; Edinburgh Handedness Inventory DOI: 10.1037/t23111-000. Methodology: Quantitative Study. References Available: Y. Page Count: 9. Issue Publication Date: Aug, 2013. Publication History: First Posted Date: May 31, 2013; Accepted Date: May 5, 2013. Copyright Statement: All rights reserved. Elsevier Inc. 2013. AB - Transcranial Doppler sonography was used to measure cerebral blood flow velocity (CBFV) in the right and left cerebral hemispheres during the performance of a 50-min visual vigilance session. Observers monitored a simulated flight of unmanned aerial vehicles for cases in which one of the vehicles was flying in an inappropriate direction relative to its cohorts. Two types of vigilance tasks were employed: a traditional task in which observers made button press ('go') responses to critical signals, and a modification of the traditional task called the Sustained Attention to Response Task (SART) in which 'go' responses acknowledged nonsignal events and response withholding ('no-go') signified signal detection. Signal detections and global CBFV scores declined over time. In addition, fine-grained event-related analyses revealed that the detection of signals was accompanied by an elevation of CBFV that was not present with missed signals. As was the case with the global scores, the magnitude of the transient CBFV increments associated with signal detection also declined over time, and these findings were independent of task type. The results support the view of CBFV as an index of the cognitive evaluation of stimulus significance, and a resource model of vigilance in which the need for continuous attention produces a depletion of information-processing assets that are not replenished as the task progresses. Further, temporal declines in the magnitude of event-related CBFV in response to critical signals only is evidence that the decrement function in vigilance is due to attentional processing and not specific task elements such as the required response format. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cerebral hemodynamics KW - vigilance KW - attentional resource theory KW - cerebral blood flow velocity KW - event related potentials KW - sustained attention KW - 2013 KW - Cerebral Blood Flow KW - Evoked Potentials KW - Resource Allocation KW - Sustained Attention KW - Vigilance KW - 2013 U1 - Sponsor: US Air Force Office of Scientific Research, US. Grant: FA9550-10-1-0385. Recipients: Parasuraman, Raja (Prin Inv) DO - 10.1016/j.bandc.2013.05.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-26486-006&site=ehost-live&scope=site UR - tshaw4@gmu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-27700-002 AN - 2013-27700-002 AU - McKinley, Richard A. AU - Gallimore, Jennie J. T1 - Computational model of sustained acceleration effects on human cognitive performance. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2013/08// VL - 84 IS - 8 SP - 780 EP - 788 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - McKinley, Richard A., Applied Neuroscience Branch, Air Force Research Laboratory, 2510 Fifth Street, Bldg .840, Wright-Patterson AFB, OH, US, 45433-7951 N1 - Accession Number: 2013-27700-002. Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: McKinley, Richard A.; Applied Neuroscience Branch, Air Force Research Laboratory, Wright-Patterson AFB, OH, US. Release Date: 20140324. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Acceleration Effects; Aircraft; Cognitive Ability. Minor Descriptor: Computational Modeling. Classification: Human Experimental Psychology (2300). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Mathematical Model; Quantitative Study. References Available: Y. Page Count: 9. Issue Publication Date: Aug, 2013. Copyright Statement: The Aerospace Medical Association, Alexandria, VA AB - Introduction: Extreme acceleration maneuvers encountered in modern agile fighter aircraft can wreak havoc on human physiology, thereby significantly influencing cognitive task performance. As oxygen content declines under acceleration stress, the activity of high order cortical tissue reduces to ensure sufficient metabolic resources are available for critical life-sustaining autonomic functions. Consequently, cognitive abilities reliant on these affected areas suffer significant performance degradations. The goal was to develop and validate a model capable of predicting human cognitive performance under acceleration stress. Methods: Development began with creation of a proportional control cardiovascular model-that produced predictions of several hemodynamic parameters, including eye-level blood pressure and regional cerebral oxygen saturation (rSo₂). An algorithm was derived td relate changes in rS0₂ within specific brain structures to performance on cognitive tasks that require engagement of different brain areas. Data from the 'precision timing' experiment were then used to validate the model predicting cognitive performance as a function of Gz profile. Results: The following are value ranges. Results showed high agreement between the measured and predicted values for the rS02 (correlation coefficient: 0.7483-0.8687; linear best-fit slope: 0.5760-0.9484; mean percent error: 0.75-3.33) and cognitive performance models (motion inference task—correlation coefficient: 0.7103-0.9451; linear best-fit slope: 0.7416-0.9144; mean percent error: 6.35-38.21; precision timing task—correlation coefficient: 0.6856-0.9726; linear best-fit slope: 0.5795-1.027; mean percent error: 6.30-1 7.28). Discussion: The evidence suggests that the model is capable of accurately predicting cognitive performance of simplistic tasks under high acceleration stress. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - computational models KW - sustained acceleration effects KW - human cognitive performance KW - aircraft KW - 2013 KW - Acceleration Effects KW - Aircraft KW - Cognitive Ability KW - Computational Modeling KW - 2013 DO - 10.3357/ASEM.2584.2013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-27700-002&site=ehost-live&scope=site UR - andy.mckinley@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-33688-005 AN - 2013-33688-005 AU - Shaw, Tyler H. AU - Satterfield, Kelly AU - Ramirez, Raul AU - Finomore, Victor T1 - Using cerebral hemovelocity to measure workload during a spatialised auditory vigilance task in novice and experienced observers. JF - Ergonomics JO - Ergonomics JA - Ergonomics Y1 - 2013/08// VL - 56 IS - 8 SP - 1251 EP - 1263 CY - United Kingdom PB - Taylor & Francis SN - 0014-0139 SN - 1366-5847 AD - Shaw, Tyler H., Department of Psychology, George Mason University, 4400 University Drive, Fairfax, VA, US, 22030 N1 - Accession Number: 2013-33688-005. PMID: 23789766 Partial author list: First Author & Affiliation: Shaw, Tyler H.; Department of Psychology, George Mason University, Fairfax, VA, US. Release Date: 20131028. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Human Channel Capacity; Human Machine Systems Design; Spatial Ability; Vigilance; Work Load. Minor Descriptor: Cerebral Blood Flow; Radio. Classification: Human Factors Engineering (4010). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: NASA-Task Load Index. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 13. Issue Publication Date: Aug, 2013. Publication History: Revised Date: May 22, 2013; First Submitted Date: Jun 29, 2012. Copyright Statement: Taylor & Francis. 2013. AB - This experiment was designed to assess cognitive load using transcranial Doppler sonography during the performance of a 40-min communication vigilance task in which messages were presented in different spatial locations or across a single monaural radio channel. In addition, some observers received 14 hours of practice to determine whether the neurophysiological measure was sensitive to a potential attenuation of workload. Critical messages were detected more frequently in the spatialised audio presentation mode condition, but there were no performance differences between experienced and novice observers. Neurophysiological data show that activation was greater in the novice condition than in the experienced condition, suggesting that novice observers expended greater effort. Furthermore, the neurophysiological measure showed more activation in the monaural radio condition than in the spatialised audio condition. The results support a resource account of vigilance and suggest that cerebral blood flow velocity can be used to diagnose the degree of attentional resource utilisation during vigilance tasks. Practitioner Summary: Due to high workload experienced during vigilance tasks, displays and methods are sought which enhance performance. This study shows that spatialising auditory communications in a monitoring task enhances performance and attenuates mental workload. Also, experience mitigates excessive workload, and cerebral hemovelocity can be used to diagnose attentional resource utilisation. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cerebral hemovelocity KW - workload KW - auditory vigilance KW - spatial ability KW - radio KW - cognitive load KW - automated system design KW - 2013 KW - Human Channel Capacity KW - Human Machine Systems Design KW - Spatial Ability KW - Vigilance KW - Work Load KW - Cerebral Blood Flow KW - Radio KW - 2013 DO - 10.1080/00140139.2013.809154 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-33688-005&site=ehost-live&scope=site UR - tshaw4@gmu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-29329-012 AN - 2013-29329-012 AU - Alarcon, Gene M. AU - Edwards, Jean M. AU - Clark, Patrick C. T1 - Coping strategies and first year performance in postsecondary education. JF - Journal of Applied Social Psychology JO - Journal of Applied Social Psychology JA - J Appl Soc Psychol Y1 - 2013/08// VL - 43 IS - 8 SP - 1676 EP - 1685 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0021-9029 SN - 1559-1816 AD - Alarcon, Gene M., Department of Psychology, Wright State University, Dayton, OH, US, 45435 N1 - Accession Number: 2013-29329-012. Partial author list: First Author & Affiliation: Alarcon, Gene M.; Air Force Research Laboratory, OH, US. Other Publishers: Blackwell Publishing. Release Date: 20130902. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Academic Achievement; Cognitive Ability; Conscientiousness; Coping Behavior; Secondary Education. Classification: Academic Learning & Achievement (3550). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: American College Test; COPE Scale; SAT ( Scholastic Aptitude Test). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Aug, 2013. Copyright Statement: Wiley Periodicals, Inc. 2013. AB - Coping was hypothesized to explain additional variance in first year grade point averages (GPAs) controlling for cognitive ability and conscientiousness. First year GPAs were assessed as criterion for performance in the first year. Results indicate active coping, denial, behavioral disengagement, and alcohol disengagement are related to first year GPA. Denial and alcohol disengagement coping strategies were significant predictors and negatively related to first year GPA in the final regression equation controlling for cognitive ability and conscientiousness. Latent growth modeling analysis demonstrated cognitive ability predicted both the intercept and slope of first year GPA. Conscientiousness was a predictor of initial GPA but not change. Lastly, coping was a significant predictor of change in GPA. Implications for research and theory are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - coping strategies KW - first year performance KW - postsecondary education KW - grade point averages KW - cognitive ability KW - conscientiousness KW - 2013 KW - Academic Achievement KW - Cognitive Ability KW - Conscientiousness KW - Coping Behavior KW - Secondary Education KW - 2013 DO - 10.1111/jasp.12120 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-29329-012&site=ehost-live&scope=site UR - gene.alarcon@wright.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Fuller, Dane F. AU - Saville, Michael A. T1 - A High-Frequency Multipeak Model for Wide-Angle SAR Imagery. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2013/07/15/Jul2013 Part 2 VL - 51 IS - 7 M3 - Article SP - 4279 EP - 4291 SN - 01962892 AB - A new modeling method for representing distributed scattering centers in wide-angle synthetic aperture radar (SAR) is presented. The proposed multipeak model approximates amplitudes of localized image peaks that typically appear at a single pixel or as an in-line set of pixels in a SAR image. In this way, the multipeak model is an improvement over existing peak models which poorly represent distributed canonical scatterers, such as the common dihedral with a fold line oriented parallel to the imaging plane. The model is derived from a wide-angle approximation of the well-known attributed scattering center or parametric models when under the action of a linear imaging operator. It is shown that, under typical imaging conditions of 10^ \circ or more in the synthetic aperture, the multipeak model approximates the image peak amplitudes due to distributed canonical scatterers as if they are due to an equivalent point scatterer with an azimuth-independent dispersive amplitude function in the spectral domain. This improves parameter estimation and scatterer classification, and it is also shown that the imaging relative error due to the approximation is less than 2% for other common image processing conditions such as tapered windowing in azimuth and when the canonical scatterer is at least ten wavelengths in size. A distinct advantage of the multipeak model over point scatterer models is that parameter estimation and scatterer classification can be performed solely in the spatial domain on a pixel-by-pixel basis and efficiently integrated within a linear SAR imaging process. To illustrate the benefits and limitations of the approach, parameter estimation and scatterer classification experiments are presented using simulated SAR data. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARAMETRIC modeling KW - SYNTHETIC aperture radar KW - IMAGE processing KW - AZIMUTH KW - PARAMETRIC downconversion KW - Apertures KW - Approximation methods KW - Azimuth KW - Distributed scatterer model KW - History KW - Imaging KW - joint frequency–polarization scatter classification KW - parametric scattering model KW - Scattering KW - Synthetic aperture radar KW - synthetic aperture radar (SAR) KW - wide-angle SAR N1 - Accession Number: 95451655; Fuller, Dane F. 1; Saville, Michael A. 1; Affiliations: 1: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Issue Info: Jul2013 Part 2, Vol. 51 Issue 7, p4279; Thesaurus Term: PARAMETRIC modeling; Subject Term: SYNTHETIC aperture radar; Subject Term: IMAGE processing; Subject Term: AZIMUTH; Subject Term: PARAMETRIC downconversion; Author-Supplied Keyword: Apertures; Author-Supplied Keyword: Approximation methods; Author-Supplied Keyword: Azimuth; Author-Supplied Keyword: Distributed scatterer model; Author-Supplied Keyword: History; Author-Supplied Keyword: Imaging; Author-Supplied Keyword: joint frequency–polarization scatter classification; Author-Supplied Keyword: parametric scattering model; Author-Supplied Keyword: Scattering; Author-Supplied Keyword: Synthetic aperture radar; Author-Supplied Keyword: synthetic aperture radar (SAR); Author-Supplied Keyword: wide-angle SAR; NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 812922 One-Hour Photofinishing; Number of Pages: 13p; Document Type: Article L3 - 10.1109/TGRS.2012.2226732 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=95451655&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Roy, Jared N. AU - Luckarift, Heather R. AU - Sizemore, Susan R. AU - Farrington, Karen E. AU - Lau, Carolin AU - Johnson, Glenn R. AU - Atanassov, Plamen T1 - Microbial-enzymatic-hybrid biological fuel cell with optimized growth conditions for Shewanella oneidensis DSP-10. JO - Enzyme & Microbial Technology JF - Enzyme & Microbial Technology Y1 - 2013/07/10/ VL - 53 IS - 2 M3 - Article SP - 123 EP - 127 SN - 01410229 AB - Highlights: [•] Hybrid biological fuel cell based on the oxidation of lactate by microorganisms at the anode and oxygen reduction by enzymatic cathode including initial material investigation of the anode. [•] Shewanella oneidensis DSP-10 anode and Laccase air breathing cathode. [•] Varying growth conditions of microorganisms for optimized current density and discussion of observed growth condition for biofilm formation. [•] Silica encapsulation of biomass for device development and study. [ABSTRACT FROM AUTHOR] AB - Copyright of Enzyme & Microbial Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Microbial growth KW - Biofilms KW - Microbial enzymes KW - Microbial fuel cells KW - Mathematical optimization KW - Shewanella oneidensis KW - Current density (Electromagnetism) KW - Laccase KW - Biofilm KW - Enzymatic cathode KW - Microbial fuel cell KW - Novel electrode materials N1 - Accession Number: 89118398; Roy, Jared N. 1; Luckarift, Heather R. 2,3; Sizemore, Susan R. 2,3; Farrington, Karen E. 2,3; Lau, Carolin 1; Johnson, Glenn R. 3; Atanassov, Plamen 1; Email Address: plamen@unm.edu; Affiliations: 1: Department of Chemical & Nuclear Engineering, Center for Emerging Energy Technologies, The University of New Mexico, Albuquerque, New Mexico 87131, USA; 2: Universal Technology Corporation, Dayton, Ohio 45432, USA; 3: Airbase Technologies Division, Air Force Research Laboratory, Tyndall Air Force Base, Florida 32043, USA; Issue Info: Jul2013, Vol. 53 Issue 2, p123; Thesaurus Term: Microbial growth; Thesaurus Term: Biofilms; Subject Term: Microbial enzymes; Subject Term: Microbial fuel cells; Subject Term: Mathematical optimization; Subject Term: Shewanella oneidensis; Subject Term: Current density (Electromagnetism); Subject Term: Laccase; Author-Supplied Keyword: Biofilm; Author-Supplied Keyword: Enzymatic cathode; Author-Supplied Keyword: Microbial fuel cell; Author-Supplied Keyword: Novel electrode materials; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.enzmictec.2013.03.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=89118398&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - MOORE-RUSSO, DEBORAH1 AU - CORMIER, PHILLIP1 AU - LEWIS, KEMPER1 AU - DEVENDORF, ERICH2 T1 - Incorporating a Product Archaeology Paradigm Across the Mechanical Engineering Curriculum. JO - Advances in Engineering Education JF - Advances in Engineering Education J1 - Advances in Engineering Education PY - 2013///Summer2013 Y1 - 2013///Summer2013 VL - 3 IS - 4 CP - 4 M3 - Article SP - 1 EP - 29 SN - 19411766 AB - Historically, the teaching of design theory in an engineering curriculum has been relegated to a senior capstone design experience. Presently, however, engineering design concepts and courses can be found through the entirety of most engineering programs. Educators have recognized that engineering design provides a foundational platform that can be used to develop educational strategies for a wide array of engineering science principles. More recently, educators have found that product archaeology provides an effective platform to develop scalable learning materials, strategies, and educational innovations across these design courses. This paper presents and discusses how product archaeology has been incorporated at a large research university in two design-related courses for mechanical engineering students: (1) a sophomore-level course and (2) a senior-level class. More specifically, details are reported regarding how and how easily global, societal, economic, and environmental factors were emphasized in the curricula of these courses. Next, the paper shares the qualitative and quantitative assessment tools and methods used to determine the impact of incorporating a product archaeology paradigm in the courses. Finally, the results are reported which demonstrate a significant increase in the students' perceptions across a number of skill and knowledge areas related to ABET-required Outcome h without negatively impacting other important academic areas. Results demonstrate a significant increase in student perception across a number of skill and knowledge areas critical to the next generation of engineers. [ABSTRACT FROM AUTHOR] KW - Universities & colleges -- Curricula KW - Capstone courses KW - Outcome assessment (Education) KW - Mechanical engineering -- Study & teaching (Higher) KW - Engineering design N1 - Accession Number: 95057796; Authors:MOORE-RUSSO, DEBORAH 1; CORMIER, PHILLIP 1; LEWIS, KEMPER 1; DEVENDORF, ERICH 2; Affiliations: 1: University at Buffalo - SUNY, Buffalo, NY; 2: Air Force Research Laboratory Information Directorate, Rome, NY; Subject: Mechanical engineering -- Study & teaching (Higher); Subject: Engineering design; Subject: Universities & colleges -- Curricula; Subject: Capstone courses; Subject: Outcome assessment (Education); Author-Supplied Keyword: design theory; Author-Supplied Keyword: product archaeology; Number of Pages: 29p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=95057796&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR AU - Kalesnik, Frank T1 - Master of the Air: William Tunner and the Success of Military Airlift. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2013/07//Jul/Aug2013 Y1 - 2013/07//Jul/Aug2013 VL - 27 IS - 4 M3 - Book Review SP - 140 EP - 142 PB - Superintendent of Documents SN - 1555385X AB - The article reviews the book "Master of the Air: William Tunner and the Success of Military Airlift" by Robert A. Slayton. KW - MASTER of the Air: William Tunner & the Success of Military Airlift (Book) KW - SLAYTON, Robert A. KW - TUNNER, William H. KW - MILITARY airlift -- United States KW - NONFICTION N1 - Accession Number: 89005449; Source Information: Jul/Aug2013, Vol. 27 Issue 4, p140; Subject Term: MASTER of the Air: William Tunner & the Success of Military Airlift (Book); Subject Term: SLAYTON, Robert A.; Subject Term: TUNNER, William H.; Subject Term: MILITARY airlift -- United States; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=89005449&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR T1 - Testing Maccoby's Theory of Productive Narcissism with US Presidents: Global Competitiveness and Dark Triad Implications. AU - Wilhelm, Paul G. AU - Wilhelm, Jana P. AU - Wilhelm, Timothy G. JO - Competition Forum JF - Competition Forum Y1 - 2013/07// VL - 11 IS - 2 SP - 289 EP - 296 SN - 15452581 N1 - Accession Number: 110314820; Author: Wilhelm, Paul G.: 1 Author: Wilhelm, Jana P.: 2 Author: Wilhelm, Timothy G.: 3 ; Author Affiliation: 1 Kentucky State University: 2 University of Kentucky: 3 United States Air Force; No. of Pages: 8; Language: English; Publication Type: Article; Update Code: 20151014 N2 - The strengths and weaknesses of productive and destructive narcissists are contrasted as a continuum and linked to Dark Triad theory and US Presidential performance. Past research on US Presidential historical ratings was reviewed and a five variable model of productive or moderate narcissism (forcefulness+ achievement drive + wit +intellectual brilliance + poise and polish) was found predictive. Maccoby (2007), and research on personalities of US Presidents, including narcissism, are used to test if destructive or severe narcissism (Machiavellianism + pettiness + inflexibility - friendliness - moderation) predicts performance in office. It did not and the two measures of productive versus destructive narcissism were found to be independent of each other. ABSTRACT FROM AUTHOR KW - *NARCISSISM KW - *PERFORMANCE evaluation KW - PRESIDENTS -- United States KW - MACHIAVELLIANISM (Psychology) KW - FRIENDSHIP KW - Dark triad KW - Global competitiveness KW - Productive versus destructive narcissism KW - US Presidential historical ratings UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=110314820&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Keller, Brandon AU - Wirthlin, J. Robert T1 - Current Barriers to Successful Implementation of FIST Principles. JO - Defense Acquisition Research Journal: A Publication of the Defense Acquisition University JF - Defense Acquisition Research Journal: A Publication of the Defense Acquisition University Y1 - 2013/07// VL - 20 IS - 2 M3 - Article SP - 194 EP - 217 SN - 21568391 AB - The Fast, Inexpensive, Simple, and Tiny (FIST) framework proposes a broad set of organizational values, but provides limited guidance on practical implementation. Implementing FIST principles requires clarifying the definitions of "fast," "inexpensive," and "simple," recognizing where FIST does and does not apply. Additionally, a subset of the FIST heuristics was expanded upon to increase their usefulness for practitioners. The primary research findings are that FIST principles are less conducive for highly complex or novel systems, immature technologies, future needs, acquisitions in early development phases, or when performance is the foremost value. FIST principles were also found to be constrained by the acquisition process, the requirements process, and oversight. [ABSTRACT FROM AUTHOR] AB - Copyright of Defense Acquisition Research Journal: A Publication of the Defense Acquisition University is the property of Defense Acquisition University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANIZATIONAL ideology KW - INNOVATIONS in business KW - ORGANIZATIONAL performance KW - ORGANIZATIONAL change KW - HEURISTIC programming KW - ORGANIZATIONAL research KW - Fast KW - Heuristics KW - Inexpensive KW - Innovation KW - Oversight KW - Program Management KW - Simple KW - Tiny (FIST) N1 - Accession Number: 89737988; Keller, Brandon 1; Email Address: brandon.keller@rl.af.mil; Wirthlin, J. Robert 2; Email Address: joseph.wirthlin@afit.edu; Affiliations: 1: Program Manager, Space Command and Control, Air Force Research Laboratory Information Directorate; 2: Assistant professor of Engineering Systems, AFIT; Issue Info: Jul2013, Vol. 20 Issue 2, p194; Thesaurus Term: ORGANIZATIONAL ideology; Thesaurus Term: INNOVATIONS in business; Thesaurus Term: ORGANIZATIONAL performance; Thesaurus Term: ORGANIZATIONAL change; Thesaurus Term: HEURISTIC programming; Thesaurus Term: ORGANIZATIONAL research; Author-Supplied Keyword: Fast; Author-Supplied Keyword: Heuristics; Author-Supplied Keyword: Inexpensive; Author-Supplied Keyword: Innovation; Author-Supplied Keyword: Oversight; Author-Supplied Keyword: Program Management; Author-Supplied Keyword: Simple; Author-Supplied Keyword: Tiny (FIST); Number of Pages: 24p; Illustrations: 3 Color Photographs, 1 Diagram, 2 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=89737988&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Yang, Chun AU - Kaplan, Lance AU - Blasch, Erik AU - Bakich, Michael T1 - Optimal Placement of Heterogeneous Sensors for Targets with Gaussian Priors. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2013/07// VL - 49 IS - 3 M3 - Article SP - 1637 EP - 1653 SN - 00189251 AB - An optimal strategy for geometric sensor placement to enhance target tracking performance is developed. Recently, a considerable amount of work has been published on optimal conditions for single-update placement of homogeneous sensors (same type and same measurement quality) in which the targets are either assumed perfectly known or the target location uncertainty is averaged out via the expected value of the determinant of the Fisher information matrix (FIM). We derive conditions for optimal placement of heterogeneous sensors based on maximization of the information matrix to be updated by the heterogeneous sensors from an arbitrary Gaussian prior characterizing the uncertainty about the initial target location. The heterogeneous sensors can be of the same or different types (ranging sensors, bearing-only sensors, or both). The sensors can also make, over several time steps, multiple independent measurements of different qualities. Placement strategies are derived and their performance is illustrated via simulation examples. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFORMATION theory KW - MATHEMATICAL optimization KW - DETECTORS KW - FISHER information KW - MATRICES KW - Covariance matrices KW - Eigenvalues and eigenfunctions KW - Equations KW - Sensor phenomena and characterization KW - Target tracking KW - Uncertainty N1 - Accession Number: 89108600; Yang, Chun 1; Kaplan, Lance 2; Blasch, Erik 3; Bakich, Michael 3; Affiliations: 1: Sigtem Technology, Inc.; 2: U.S. Army Research Laboratory; 3: Air Force Research Laboratory; Issue Info: Jul2013, Vol. 49 Issue 3, p1637; Thesaurus Term: INFORMATION theory; Thesaurus Term: MATHEMATICAL optimization; Subject Term: DETECTORS; Subject Term: FISHER information; Subject Term: MATRICES; Author-Supplied Keyword: Covariance matrices; Author-Supplied Keyword: Eigenvalues and eigenfunctions; Author-Supplied Keyword: Equations; Author-Supplied Keyword: Sensor phenomena and characterization; Author-Supplied Keyword: Target tracking; Author-Supplied Keyword: Uncertainty; Number of Pages: 17p; Document Type: Article L3 - 10.1109/TAES.2013.6558009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=89108600&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Deng, Hai AU - Himed, Braham T1 - Interference Mitigation Processing for Spectrum-Sharing Between Radar and Wireless Communications Systems. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2013/07// VL - 49 IS - 3 M3 - Article SP - 1911 EP - 1919 SN - 00189251 AB - The theoretical feasibility is explored of spectrum-sharing between radar and wireless communications systems via an interference mitigation processing approach. The new approach allows radar and wireless systems to operate at the same carrier frequency if the radar possesses a multiple-input multiple-output (MIMO) structure. A novel signal processing approach is developed for coherent MIMO radar that effectively minimizes the arbitrary interferences generated by wireless systems from any direction, while operating at the same frequency using cognitive radio technology. Various theoretical aspects of the new approach are investigated, and its effectiveness is further validated through simulation. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIRELESS communication systems KW - RADAR KW - ELECTRONIC systems KW - MIMO systems KW - SIGNAL processing KW - Interference KW - MIMO radar KW - Radar antennas KW - Receiving antennas KW - Vectors KW - Wireless communication N1 - Accession Number: 89108618; Deng, Hai 1; Himed, Braham 2; Affiliations: 1: Florida International University; 2: Air Force Research Laboratory; Issue Info: Jul2013, Vol. 49 Issue 3, p1911; Thesaurus Term: WIRELESS communication systems; Subject Term: RADAR; Subject Term: ELECTRONIC systems; Subject Term: MIMO systems; Subject Term: SIGNAL processing; Author-Supplied Keyword: Interference; Author-Supplied Keyword: MIMO radar; Author-Supplied Keyword: Radar antennas; Author-Supplied Keyword: Receiving antennas; Author-Supplied Keyword: Vectors; Author-Supplied Keyword: Wireless communication; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TAES.2013.6558027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=89108618&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Mei, Xue AU - Ling, Haibin AU - Wu, Yi AU - Blasch, Erik P. AU - Bai, Li T1 - Efficient Minimum Error Bounded Particle Resampling L1 Tracker With Occlusion Detection. JO - IEEE Transactions on Image Processing JF - IEEE Transactions on Image Processing Y1 - 2013/07// VL - 22 IS - 7 M3 - Article SP - 2661 EP - 2675 SN - 10577149 AB - Recently, sparse representation has been applied to visual tracking to find the target with the minimum reconstruction error from a target template subspace. Though effective, these L1 trackers require high computational costs due to numerous calculations for \ell1 minimization. In addition, the inherent occlusion insensitivity of the \ell1 minimization has not been fully characterized. In this paper, we propose an efficient L1 tracker, named bounded particle resampling (BPR)-L1 tracker, with a minimum error bound and occlusion detection. First, the minimum error bound is calculated from a linear least squares equation and serves as a guide for particle resampling in a particle filter (PF) framework. Most of the insignificant samples are removed before solving the computationally expensive \ell1 minimization in a two-step testing. The first step, named \tau testing, compares the sample observation likelihood to an ordered set of thresholds to remove insignificant samples without loss of resampling precision. The second step, named max testing, identifies the largest sample probability relative to the target to further remove insignificant samples without altering the tracking result of the current frame. Though sacrificing minimal precision during resampling, max testing achieves significant speed up on top of \tau testing. The BPR-L1 technique can also be beneficial to other trackers that have minimum error bounds in a PF framework, especially for trackers based on sparse representations. After the error-bound calculation, BPR-L1 performs occlusion detection by investigating the trivial coefficients in the \ell1 minimization. These coefficients, by design, contain rich information about image corruptions, including occlusion. Detected occlusions are then used to enhance the template updating. For evaluation, we conduct experiments on three video applications: biometrics (head movement, hand holding object, singers on stage), pedestrians (urban travel, hallway monitoring), and cars in traffic (wide area motion imagery, ground-mounted perspectives). The proposed BPR-L1 method demonstrates an excellent performance as compared with nine state-of-the-art trackers on eleven challenging benchmark sequences. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Image Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONTE Carlo method KW - ERROR analysis (Mathematics) KW - COMPRESSED sensing (Signal processing) KW - IMAGE compression KW - PATTERN recognition systems KW - IMAGE reconstruction KW - IMAGE representation (Computer graphics) KW - DIGITAL image processing KW - compressive sensing KW - minimum error bound KW - occlusion detection KW - particle filter (PF) KW - sparse representation KW - visual tracking KW - \ell1 minimization N1 - Accession Number: 87618162; Mei, Xue 1; Ling, Haibin 2; Wu, Yi 3; Blasch, Erik P. 4; Bai, Li 5; Affiliations: 1: Toyota Research Institute, North America, Ann Arbor, MI, USA; 2: Department of Computer and Information Science, and the Center for Data Analytics and Biomedical Informatics, Temple University, Philadelphia, PA, USA; 3: School of Information and Control Engineering, Nanjing University of Information Science and Technology, Nanjing, China; 4: U.S. Air Force Research Laboratory, Information Directorate, OR AFRL/RIEA, NY, USA; 5: Department of Electrical and Computer Engineering, Temple University, Philadelphia, PA, USA; Issue Info: Jul2013, Vol. 22 Issue 7, p2661; Thesaurus Term: MONTE Carlo method; Thesaurus Term: ERROR analysis (Mathematics); Subject Term: COMPRESSED sensing (Signal processing); Subject Term: IMAGE compression; Subject Term: PATTERN recognition systems; Subject Term: IMAGE reconstruction; Subject Term: IMAGE representation (Computer graphics); Subject Term: DIGITAL image processing; Author-Supplied Keyword: compressive sensing; Author-Supplied Keyword: minimum error bound; Author-Supplied Keyword: occlusion detection; Author-Supplied Keyword: particle filter (PF); Author-Supplied Keyword: sparse representation; Author-Supplied Keyword: visual tracking; Author-Supplied Keyword: \ell1 minimization; Number of Pages: 15p; Document Type: Article L3 - 10.1109/TIP.2013.2255301 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=87618162&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Shen, Yuhui AU - Leontsev, Serhiy O. AU - Turgut, Zafer AU - Lucas, Matthew S. AU - Sheets, Alexander O. AU - Horwath, John C. T1 - Effect of Soft Phase on Magnetic Properties of Bulk Sm–Co/\alpha–Fe Nanocomposite Magnets. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2013/07// VL - 49 IS - 7 M3 - Article SP - 3244 EP - 3247 SN - 00189464 AB - Bulk Sm–Co/\alpha–Fe nanocomposite magnets were fabricated by high energy ball milling and subsequent quick hot-pressing. Three different parameters were investigated which are soft phase content, type, and distribution. The effect of Fe soft phase content on the magnetic properties of the final bulk samples was examined. Increasing the Fe content significantly increased the saturation magnetization but at the cost of reduced coercivity. The optimum Fe addition for the highest maximum energy product was determined to be 15 wt% under the present processing conditions. Besides pure Fe a \ Fe49{\ {Co}}49{\ {V}}2 powder was also studied as a soft phase addition. The results indicated that FeCoV powder was more readily alloyed with the Sm–Co phase during the milling procedure. For the final bulk magnets, nanoscale Fe particles existed in Sm–Co matrix with pure Fe addition, but with \ Fe49{\ {Co}}49{\ {V}}2 addition the soft phase particles were undetectable. Two methods for adding soft phase Fe into hard phase \ SmCo5 were utilized. The investigation showed that milling Fe and \ SmCo5 together resulted in a more uniformly distributed mixture of nanoscale soft phase particles, improved squareness of the demagnetization curves of bulk nanocomposite magnets, and higher (\ BH)\max as compared to blending Fe with \ SmCo5. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SAMARIUM compounds KW - METALS -- Magnetic properties KW - NANOCOMPOSITE materials KW - MICROFABRICATION KW - BALL mills KW - COERCIVE fields (Electronics) KW - PERPENDICULAR magnetic anisotropy KW - Bulk magnets KW - coupling KW - Iron KW - Milling KW - nanocomposite KW - Perpendicular magnetic anisotropy KW - Powders KW - Saturation magnetization KW - Soft magnetic materials KW - \ Sm\ –\ Co/\alpha\ –\ Fe N1 - Accession Number: 89227945; Shen, Yuhui 1; Leontsev, Serhiy O. 1; Turgut, Zafer 2; Lucas, Matthew S. 2; Sheets, Alexander O. 2; Horwath, John C. 2; Affiliations: 1: University of Dayton, Dayton, OH, USA; 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Issue Info: Jul2013, Vol. 49 Issue 7, p3244; Subject Term: SAMARIUM compounds; Subject Term: METALS -- Magnetic properties; Subject Term: NANOCOMPOSITE materials; Subject Term: MICROFABRICATION; Subject Term: BALL mills; Subject Term: COERCIVE fields (Electronics); Subject Term: PERPENDICULAR magnetic anisotropy; Author-Supplied Keyword: Bulk magnets; Author-Supplied Keyword: coupling; Author-Supplied Keyword: Iron; Author-Supplied Keyword: Milling; Author-Supplied Keyword: nanocomposite; Author-Supplied Keyword: Perpendicular magnetic anisotropy; Author-Supplied Keyword: Powders; Author-Supplied Keyword: Saturation magnetization; Author-Supplied Keyword: Soft magnetic materials; Author-Supplied Keyword: \ Sm\ –\ Co/\alpha\ –\ Fe; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TMAG.2013.2246781 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=89227945&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Kosai, Hiroyuki AU - Turgut, Zafer AU - Scofield, James T1 - Experimental Investigation of DC-Bias Related Core Losses in a Boost Inductor. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2013/07// VL - 49 IS - 7 M3 - Article SP - 4168 EP - 4171 SN - 00189464 AB - Soft magnetic components in electronic systems are often subjected to dc bias-flux conditions. These dc bias conditions result in distorted hysteresis loops, increased core losses, and have been shown to be independent of core material. The physical origin of these increased losses is not well understood and there is no simple model that can predict these losses without extensive measurements. Absence of a widely accepted model coupled with the complete lack of dc loss attributes on core manufacturers' data sheets result in a requirement to empirically determine loss values for specific design applications. These deficiencies have motivated our efforts to investigate dc bias dependent loss phenomenon in a Fe-based Metglas core inductor operating in a dc-dc boost converter. Since dc flux levels in the core are proportional to the controllable converter load currents, this topology is ideal to study dc-related losses. Inductor core B-H hysteresis loop characterization was accomplished as a function of switching frequency, input voltage, and load current operating conditions and parameters. In this paper, the core loss results were presented as a function of the dc bias conditions, and the results showed that the core losses increased with the pre-magnetized (Bdc) fields. As a result of our observations, we have proposed a modification to the conventional Steinmetz loss equation to include the effects of dc pre-magnetization flux in the core. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIRECT currents KW - ELECTRIC inductors KW - ELECTRONIC systems KW - MAGNETIC flux KW - HYSTERESIS loop KW - AMORPHOUS magnetic materials KW - MAGNETIC cores KW - Amorphous magnetic materials KW - Core loss KW - Current measurement KW - Hysteresis KW - inductors KW - Loss measurement KW - Magnetic cores KW - magnetic losses KW - Voltage measurement N1 - Accession Number: 89228017; Kosai, Hiroyuki 1; Turgut, Zafer 1; Scofield, James 2; Affiliations: 1: UES Inc., Dayton, OH, USA; 2: Air Force Research Laboratory, Wright Patterson AFB, OH, USA; Issue Info: Jul2013, Vol. 49 Issue 7, p4168; Subject Term: DIRECT currents; Subject Term: ELECTRIC inductors; Subject Term: ELECTRONIC systems; Subject Term: MAGNETIC flux; Subject Term: HYSTERESIS loop; Subject Term: AMORPHOUS magnetic materials; Subject Term: MAGNETIC cores; Author-Supplied Keyword: Amorphous magnetic materials; Author-Supplied Keyword: Core loss; Author-Supplied Keyword: Current measurement; Author-Supplied Keyword: Hysteresis; Author-Supplied Keyword: inductors; Author-Supplied Keyword: Loss measurement; Author-Supplied Keyword: Magnetic cores; Author-Supplied Keyword: magnetic losses; Author-Supplied Keyword: Voltage measurement; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TMAG.2013.2242863 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=89228017&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Groschner, Catherine AU - Lan, Song AU - Wise, Adam AU - Leary, Alex AU - Lucas, Matthew S. AU - Park, Changyong AU - Laughlin, David E. AU - Diaz-Michelena, Marina AU - McHenry, Michael E. T1 - The Role of Atmosphere on Phase Transformations and Magnetic Properties of Ulvospinel. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2013/07// VL - 49 IS - 7 M3 - Article SP - 4273 EP - 4276 SN - 00189464 AB - We have synthesized the antiferromagnetic mineral ulvospinel, Fe2TiO4, in Ar to assess the role of inert atmosphere on phase formation and magnetic properties. We report the role of atmosphere on a possible phase transition and the magnetic properties of this mineral. Atmosphere dependent transformations of ulvospinel are observed with increasing temperature. Oxidation of ulvospinel to form metastable titanomaghemite is shown to occur at 300 ^\circC in atmospheric conditions. Only slight titanomaghematitzation was observed in samples transformed under pressure in in situ temperature dependent X-ray experiments. Formation of ilmenite and hematite from ulvospinel was observed under high temperature, high pressure, and low oxygen atmosphere conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Magnetic properties KW - ANTIFERROMAGNETIC materials KW - TITANIUM oxides KW - MAGNETIC transitions KW - TEMPERATURE measurements KW - HIGH temperatures KW - X-ray scattering KW - Atmosphere KW - Magnetic properties KW - Magnetization KW - Magnetosphere KW - Martian mineral KW - Minerals KW - remnant magnetization KW - Temperature KW - thermal magnetic property KW - titanomagnetite N1 - Accession Number: 89227879; Groschner, Catherine 1; Lan, Song 1; Wise, Adam 2; Leary, Alex 2; Lucas, Matthew S. 3; Park, Changyong 4; Laughlin, David E. 2; Diaz-Michelena, Marina 2; McHenry, Michael E. 2; Affiliations: 1: Materials Science and Engineering Department, Carnegie Mellon University, Pittsburgh, PA, USA; 2: Materials Science and Engineering Department, Carnegie Mellon University, Pittsburgh,; 3: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; 4: High Pressure Collaborative Access Team, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, IL, USA; Issue Info: Jul2013, Vol. 49 Issue 7, p4273; Subject Term: METALS -- Magnetic properties; Subject Term: ANTIFERROMAGNETIC materials; Subject Term: TITANIUM oxides; Subject Term: MAGNETIC transitions; Subject Term: TEMPERATURE measurements; Subject Term: HIGH temperatures; Subject Term: X-ray scattering; Author-Supplied Keyword: Atmosphere; Author-Supplied Keyword: Magnetic properties; Author-Supplied Keyword: Magnetization; Author-Supplied Keyword: Magnetosphere; Author-Supplied Keyword: Martian mineral; Author-Supplied Keyword: Minerals; Author-Supplied Keyword: remnant magnetization; Author-Supplied Keyword: Temperature; Author-Supplied Keyword: thermal magnetic property; Author-Supplied Keyword: titanomagnetite; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TMAG.2013.2250928 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=89227879&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Williams, Dylan F. AU - Corson, Phillip AU - Sharma, Jahnavi AU - Krishnaswamy, Harish AU - Tai, Wei AU - George, Zacharias AU - Ricketts, David AU - Watson, Paul AU - Dacquay, Eric AU - Voinigescu, Sorin P. T1 - Calibration-Kit Design for Millimeter-Wave Silicon Integrated Circuits. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques Y1 - 2013/07// VL - 61 IS - 7 M3 - Article SP - 2685 EP - 2694 SN - 00189480 AB - We study and present design guidelines for thru-reflect-line vector-network-analyzer calibration kits used for characterizing circuits and transistors fabricated on silicon integrated circuits at millimeter-wave frequencies. We compare contact-pad designs and develop fixed-fill contacts that achieve both repeatable and low contact-pad capacitances. We develop a fill-free and mesh-free transmission line structure for the calibration kit and compare it to similar transmission lines with meshed ground plane. We also develop a gold plating process that greatly improves contact repeatability, permitting the use of redundant multiline calibrations. This in turn simplifies the development of an error analysis. Finally, we apply the technique to state-of-the-art transistor characterization, and present measured results with uncertainties. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CALIBRATION KW - MILLIMETER waves KW - SCATTERING parameters (Computer networks) KW - TRANSISTORS KW - SILICON KW - Calibration KW - measurement KW - millimeter wave KW - scattering parameters KW - silicon KW - transistor KW - uncertainty KW - vector network analyzer N1 - Accession Number: 88902985; Williams, Dylan F. 1; Corson, Phillip 2; Sharma, Jahnavi 3; Krishnaswamy, Harish 3; Tai, Wei 4; George, Zacharias 4; Ricketts, David 4; Watson, Paul 5; Dacquay, Eric 6; Voinigescu, Sorin P. 6; Affiliations: 1: National Institute of Standards and Technology, Boulder, CO, USA; 2: IBM Semiconductor Research and Development Center, Essex Junction,; 3: Department of Electrical Engineering, Columbia University, New York, New York, USA; 4: Electrical and Computer Engineering Department, Carnegie Mellon University, Pittsburgh, PA, USA; 5: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH, USA; 6: Electrical and Computer Engineering Department, University of Toronto, Toronto, Canada; Issue Info: Jul2013, Vol. 61 Issue 7, p2685; Subject Term: CALIBRATION; Subject Term: MILLIMETER waves; Subject Term: SCATTERING parameters (Computer networks); Subject Term: TRANSISTORS; Subject Term: SILICON; Author-Supplied Keyword: Calibration; Author-Supplied Keyword: measurement; Author-Supplied Keyword: millimeter wave; Author-Supplied Keyword: scattering parameters; Author-Supplied Keyword: silicon; Author-Supplied Keyword: transistor; Author-Supplied Keyword: uncertainty; Author-Supplied Keyword: vector network analyzer; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TMTT.2013.2265685 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=88902985&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Patton, Steven T. AU - Frasca, Albert J. AU - Talnagi, Joseph W. AU - Hyman, Daniel J. AU - Phillips, Benjamin S. AU - Jones, John G. AU - Vaia, Richard A. AU - Voevodin, Andrey A. T1 - Effect of Space Radiation on the Leakage Current of MEMS Insulators. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2013/07//7/1/2013 Part 2 VL - 60 IS - 4 M3 - Article SP - 3074 EP - 3083 SN - 00189499 AB - The effect of space radiation on the reliability of microelectromechanical systems (MEMS) devices is an important consideration for future upper atmosphere and space applications. MEMS capacitors with insulator materials of silicon nitride (\ Si3{\ {N}}4), silicon oxide (\ SiO2), and ultrananocrystalline diamond (UNCD) were selected for radiation and leakage current studies. Leakage current was used as a measure of insulator performance and reliability, and is suggested here as a method to detect charge trapping, which also affects reliability. UNCD capacitors were orders of magnitude leakier than \ Si3{\ {N}}4 and \ SiO2, with \ Si3{\ {N}}4 being leakier than \ SiO2. \ SiO2 devices exhibited unstable leakage current with accumulated electric field stress, and were not utilized in radiation studies. \ Si3{\ {N}}4 capacitors exhibited leakage current decay (with a time constant of 190 s) under constant voltage stress above 2 MV/cm due to charge injection from the electrodes and trapping in the insulator. \ Si3{\ {N}}4 and UNCD capacitors were more sensitive to ionizing gamma radiation than to displacement damage from fast neutrons. Both \ Si3{\ {N}}4 and UNCD devices survived total doses of radiation representative of 20–100 years in the Van Allen radiation belts with 4 mm Al equivalent shielding. Capacitor equivalent circuit and resistor capacitor (RC) circuit charging models are developed to explain leakage current behavior of \ Si3{\ {N}}4 capacitors subjected to constant voltage stress and/or irradiation. In situ monitoring of \ Si3{\ {N}}4 capacitors placed next to the nuclear reactor core did not yield any single event effects at electric field strength of 1 MV/cm with a fast neutron fluence of 2\times 10^12\ \ n/cm^2. \ Si3{\ {N}}4 MEMS capacitors appear best suited for upper atmosphere and space applications with their relatively low leakage current (low power consumption) and apparent radiation hardness. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Nuclear reactors KW - Astrophysical radiation KW - Microelectromechanical systems KW - Capacitors KW - Silicon nitride KW - Silicon oxide KW - Stray currents KW - Electric insulators & insulation KW - Charge trapping KW - leakage current KW - microelectromechanical devices KW - reliability testing KW - space radiation N1 - Accession Number: 89773611; Patton, Steven T. 1; Frasca, Albert J. 2; Talnagi, Joseph W. 3; Hyman, Daniel J. 4; Phillips, Benjamin S. 5; Jones, John G. 5; Vaia, Richard A. 5; Voevodin, Andrey A. 5; Affiliations: 1: University of Dayton Research Institute, Dayton, OH, USA; 2: Department of Physics, Wittenberg University, Springfield, OH, USA; 3: The Ohio State University Reactor Laboratory, Columbus,; 4: XCOM Wireless Inc., Signal Hill,; 5: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, USA; Issue Info: 7/1/2013 Part 2, Vol. 60 Issue 4, p3074; Thesaurus Term: Nuclear reactors; Subject Term: Astrophysical radiation; Subject Term: Microelectromechanical systems; Subject Term: Capacitors; Subject Term: Silicon nitride; Subject Term: Silicon oxide; Subject Term: Stray currents; Subject Term: Electric insulators & insulation; Author-Supplied Keyword: Charge trapping; Author-Supplied Keyword: leakage current; Author-Supplied Keyword: microelectromechanical devices; Author-Supplied Keyword: reliability testing; Author-Supplied Keyword: space radiation; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 335930 Wiring device manufacturing; NAICS/Industry Codes: 326290 Other rubber product manufacturing; NAICS/Industry Codes: 332410 Power Boiler and Heat Exchanger Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TNS.2013.2263840 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=89773611&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Phillips, David M AU - Baur, Jeffery W T1 - A microvascular method for thermal activation and deactivation of shape memory polymers. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2013/07// VL - 24 IS - 10 M3 - Article SP - 1233 EP - 1244 SN - 1045389X AB - The integration of material systems to include thermal activation and deactivation of shape memory polymers represents a key challenge for adaptive systems. Microvascular fluid flow with hot or cold fluid is used as an energy transport mechanism to activate and deactivate shape memory polymers, where the maximum temperature is limited by the hot fluid temperature to prevent overheating. A thin panel was constructed from the Veriflex® shape memory polymer and included an array of 10 parallel microvascular tubes. The panel is strained orthogonally to the tube direction in the activated state. An analytical steady-state surface temperature model is applied to predict the surface temperature range during activation. Thermography is used to measure the steady-state surface temperature for heating and the dynamic surface temperature for both heating and cooling. The decay constants and surface temperature range for heating and cooling are examined as a function of applied strain (0%–20%) and fluid flow rate (0–25 g min−1 of water). The decay constants depended strongly on flow rate and weakly on strain. The observed vascular cooling rate was up to six times faster than the comparable natural convection cooling rate for the flow rates tested. This faster cooling rate can significantly reduce temperature cycle times. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADAPTIVE control systems KW - THERMAL analysis KW - SHAPE memory polymers KW - MATERIALS science KW - ENERGY transfer KW - ORTHOGONAL functions KW - SURFACE temperature KW - Control KW - polymers KW - shape memory N1 - Accession Number: 88347168; Phillips, David M 1; Baur, Jeffery W 2; Affiliations: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (RXCC), Wright-Patterson AFB, OH, USA, Universal Technology Corporation (UTC), Dayton, OH, USA; 2: Air Force Research Laboratory, Materials and Manufacturing Directorate (RXCC), Wright-Patterson AFB, OH, USA; Issue Info: Jul2013, Vol. 24 Issue 10, p1233; Thesaurus Term: ADAPTIVE control systems; Subject Term: THERMAL analysis; Subject Term: SHAPE memory polymers; Subject Term: MATERIALS science; Subject Term: ENERGY transfer; Subject Term: ORTHOGONAL functions; Subject Term: SURFACE temperature; Author-Supplied Keyword: Control; Author-Supplied Keyword: polymers; Author-Supplied Keyword: shape memory; Number of Pages: 12p; Document Type: Article; Full Text Word Count: 6793 L3 - 10.1177/1045389X12471907 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=88347168&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Phillips, David M AU - Baur, Jeffery W T1 - A microvascular method for thermal activation and deactivation of shape memory polymers. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2013/07// VL - 24 IS - 10 M3 - Article SP - 1233 EP - 1244 SN - 1045389X AB - The integration of material systems to include thermal activation and deactivation of shape memory polymers represents a key challenge for adaptive systems. Microvascular fluid flow with hot or cold fluid is used as an energy transport mechanism to activate and deactivate shape memory polymers, where the maximum temperature is limited by the hot fluid temperature to prevent overheating. A thin panel was constructed from the Veriflex® shape memory polymer and included an array of 10 parallel microvascular tubes. The panel is strained orthogonally to the tube direction in the activated state. An analytical steady-state surface temperature model is applied to predict the surface temperature range during activation. Thermography is used to measure the steady-state surface temperature for heating and the dynamic surface temperature for both heating and cooling. The decay constants and surface temperature range for heating and cooling are examined as a function of applied strain (0%–20%) and fluid flow rate (0–25 g min−1 of water). The decay constants depended strongly on flow rate and weakly on strain. The observed vascular cooling rate was up to six times faster than the comparable natural convection cooling rate for the flow rates tested. This faster cooling rate can significantly reduce temperature cycle times. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL analysis KW - SHAPE memory polymers KW - MATERIALS science KW - ADAPTIVE control systems KW - ENERGY transfer KW - ORTHOGONAL functions KW - SURFACE temperature KW - Control KW - polymers KW - shape memory N1 - Accession Number: 88347168; Phillips, David M 1; Baur, Jeffery W 2; Source Information: Jul2013, Vol. 24 Issue 10, p1233; Subject: THERMAL analysis; Subject: SHAPE memory polymers; Subject: MATERIALS science; Subject: ADAPTIVE control systems; Subject: ENERGY transfer; Subject: ORTHOGONAL functions; Subject: SURFACE temperature; Author-Supplied Keyword: Control; Author-Supplied Keyword: polymers; Author-Supplied Keyword: shape memory; Number of Pages: 12p; Document Type: Article; Full Text Word Count: 6793 L3 - 10.1177/1045389X12471907 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=88347168&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - CREIGHTON, GLENN A. AU - HART, ROBERT E. AU - CUNNINGHAM, PHILIP T1 - A Spatial Filter Approach to Evaluating the Role of Convection on the Evolution of a Mesoscale Vortex. JO - Journal of the Atmospheric Sciences JF - Journal of the Atmospheric Sciences Y1 - 2013/07// VL - 70 IS - 7 M3 - Article SP - 1954 EP - 1976 PB - American Meteorological Society SN - 00224928 AB - A new spatial filter is proposed that exploits a spectral gap in power between the convective scale and the system ("vortex") scale during tropical cyclone (TC) genesis simulations. Using this spatial separation, this study analyzes idealized three-dimensional numerical simulations of deep moist convection in the presence of a symmetric midlevel vortex to quantify and understand the energy cascade between the objectively defined convective scale and system scale during the early stages of tropical cyclogenesis. The simulations neglect surface momentum, heat, and moisture fluxes to focus on generation and enhancement of vorticity within the interior to more completely close off the energy budget and to be consistent for comparison with prior benchmark studies of modeled TC genesis. The primary contribution to system-scale intensification comes from the convergence of convective-scale vorticity that is supplied by vortical hot towers (VHTs). They contribute more than the convergence of system-scale vorticity to the spinup of vorticity in these simulations by an order of magnitude. Analysis of the change of circulation with time shows an initial strengthening of the surface vortex, closely followed by a growth of the mid- to upper-level circulation. This evolution precludes any possibility of a stratiform precipitation-induced top-down mechanism as the primary contributor to system-scale spinup in this simulation. Instead, an upscale cascade of rotational kinetic energy during vortex mergers is responsible for spinup of the simulated mesoscale vortex. The spatial filter employed herein offers an alternative approach to the traditional symmetry-asymmetry paradigm, acknowledges the highly asymmetric evolution of the system-scale vortex itself, and may prove useful to future studies on TC genesis. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Atmospheric Sciences is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Atmospheric circulation KW - Mesoscale convective complexes KW - Spatial filters KW - Light filters KW - Convection (Meteorology) N1 - Accession Number: 89423132; CREIGHTON, GLENN A. 1; Email Address: glenn.creighton@offutt.af.mil; HART, ROBERT E. 2; CUNNINGHAM, PHILIP 3; Affiliations: 1: Air Force Weather Agency, United States Air Force, Offutt Air Force Base, Nebraska; 2: Department of Earth, Ocean, and Atmospheric Science, Florida State University, Tallahassee, Florida; 3: PDL Solutions (Europe) Ltd, Hexham, United Kingdom; Issue Info: Jul2013, Vol. 70 Issue 7, p1954; Thesaurus Term: RESEARCH; Thesaurus Term: Atmospheric circulation; Thesaurus Term: Mesoscale convective complexes; Subject Term: Spatial filters; Subject Term: Light filters; Subject Term: Convection (Meteorology); Number of Pages: 23p; Illustrations: 1 Color Photograph, 2 Charts, 17 Graphs; Document Type: Article L3 - 10.1175/JAS-D-12-0186.1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=89423132&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 104181954 T1 - A human–machine interaction strategy function: information throughput and weighting with application to Multiple-Attribute-Task-Battery. AU - Phillips, Chandler A. AU - Kinsler, Rachel E. AU - Repperger, Daniel W. AU - Mandal, Jayishnu AU - Neidhard-Doll, Amy T. AU - Kender, David M. Y1 - 2013/07// N1 - Accession Number: 104181954. Language: English. Entry Date: 20130625. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Editorial Board Reviewed; Europe; Expert Peer Reviewed; Peer Reviewed; UK & Ireland. NLM UID: 101163424. KW - Computer Assisted Instruction KW - Task Performance and Analysis KW - Human KW - Male KW - Female KW - Adult KW - One-Way Analysis of Variance KW - Descriptive Statistics KW - Data Analysis Software KW - Post Hoc Analysis KW - Models, Theoretical KW - Theory-Practice Relationship SP - 379 EP - 401 JO - Theoretical Issues in Ergonomics Science JF - Theoretical Issues in Ergonomics Science JA - THEOR ISSUES ERGON SCI VL - 14 IS - 4 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - The Multiple-Attribute-Task-Battery (MATB) displays five independent and concurrent tasks to which a human operator (HO) responds. MATB records the task-specific responses and so provides data on human performance. A general strategy function based on five task-specific strategy cases is described to characterise the human–MATB interaction. A prior report evaluated an implicit strategy group of 32 HOs for whom no strategy-important information was provided (i.e. all tasks are equally important). However, a specified strategy function did not characterise the group. This report evaluates an explicit strategy group of 35 HOs for whom the actual weighting of the five tasks was provided. The general strategy function is applied to both groups and characterises two different strategies. With respect to ergonomic theory and practice, a generalised strategy function is defined and applied to the human–MATB interaction that characterises two different strategy types and also provides a metric for MATB system complexity across five independent tasks. SN - 1463-922X AD - Department of Biomedical , Industrial and Human Factors Engineering, Wright State University , Dayton , OH 45435 , USA AD - Air Force Research Laboratory , AFRL/HECP, Wright-Patterson A.F.B. , Dayton , OH 45433 , USA DO - 10.1080/1463922X.2011.637245 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104181954&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2013-21617-004 AN - 2013-21617-004 AU - Phillips, Chandler A. AU - Kinsler, Rachel E. AU - Repperger, Daniel W. AU - Mandal, Jayishnu AU - Neidhard-Doll, Amy T. AU - Kender, David M. T1 - A human–machine interaction strategy function: Information throughput and weighting with application to Multiple-Attribute-Task-Battery. JF - Theoretical Issues in Ergonomics Science JO - Theoretical Issues in Ergonomics Science JA - Theor Issues Ergon Y1 - 2013/07// VL - 14 IS - 4 SP - 379 EP - 401 CY - United Kingdom PB - Taylor & Francis SN - 1463-922X SN - 1464-536X AD - Phillips, Chandler A., Department of Biomedical, Industrial and Human Factors Engineering, Wright State University, Dayton, OH, US, 45435 N1 - Accession Number: 2013-21617-004. Partial author list: First Author & Affiliation: Phillips, Chandler A.; Department of Biomedical, Industrial and Human Factors Engineering, Wright State University, Dayton, OH, US. Release Date: 20131028. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Human Computer Interaction; Human Machine Systems; Information Systems; Information. Classification: Human Factors Engineering (4010). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Multiple-Attribute-Task-Battery. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 23. Issue Publication Date: Jul, 2013. Publication History: Revised Date: Oct 30, 2011; First Submitted Date: Mar 18, 2010. Copyright Statement: Taylor & Francis. 2013. AB - The Multiple-Attribute-Task-Battery (MATB) displays five independent and concurrent tasks to which a human operator (HO) responds. MATB records the task-specific responses and so provides data on human performance. A general strategy function based on five task-specific strategy cases is described to characterise the human–MATB interaction. A prior report evaluated an implicit strategy group of 32 HOs for whom no strategy-important information was provided (i.e. all tasks are equally important). However, a specified strategy function did not characterise the group. This report evaluates an explicit strategy group of 35 HOs for whom the actual weighting of the five tasks was provided. The general strategy function is applied to both groups and characterises two different strategies. With respect to ergonomic theory and practice, a generalised strategy function is defined and applied to the human–MATB interaction that characterises two different strategy types and also provides a metric for MATB system complexity across five independent tasks. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - information throughput KW - Multiple-Attribute-Task Battery KW - human performance KW - 2013 KW - Human Computer Interaction KW - Human Machine Systems KW - Information Systems KW - Information KW - 2013 DO - 10.1080/1463922X.2011.637245 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-21617-004&site=ehost-live&scope=site UR - chandler.phillips@wright.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-24178-002 AN - 2013-24178-002 AU - Gretebeck, Kimberlee A. AU - Radius, Kaitlyn AU - Black, David R. AU - Gretebeck, Randall J. AU - Ziemba, Rosemary AU - Glickman, Lawrence T. T1 - Dog ownership, functional ability, and walking in community-dwelling older adults. JF - Journal of Physical Activity & Health JO - Journal of Physical Activity & Health JA - J Phys Act Health Y1 - 2013/07// VL - 10 IS - 5 SP - 646 EP - 655 CY - US PB - Human Kinetics SN - 1543-3080 SN - 1543-5474 N1 - Accession Number: 2013-24178-002. PMID: 23307529 Partial author list: First Author & Affiliation: Gretebeck, Kimberlee A.; School of Nursing, University of Wisconsin, Madison, WI, US. Release Date: 20140407. Correction Date: 20160414. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Ability Level; Aging; Ownership; Walking. Minor Descriptor: Health; Pets; Physical Activity. Classification: Gerontology (2860). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Aged (65 yrs & older) (380); Very Old (85 yrs & older) (390). Tests & Measures: Physical Activity Scale for the Elderly; Physical Functioning Questionnaire; Intention Scale; Bipolar Adjective Scales DOI: 10.1037/t16322-000; Theory of Planned Behavior Questionnaire; Subjective Norm Scale; Perceived Behavioral Control Measure. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Jul, 2013. Copyright Statement: Human Kinetics, Inc. 2013. AB - Background: Regular walking improves overall health and functional ability of older adults, yet most are sedentary. Dog ownership/pet responsibility may increase walking in older adults. Goals of this study were to identify factors that influence older adult walking and compare physical activity, functional ability and psychosocial characteristics by dog ownership status. Methods: In this cross-sectional study, older adults (65–95 years of age, n = 1091) completed and returned questionnaires via postal mail. Measures included: Physical Activity Scale for the Elderly, Physical Functioning Questionnaire and Theory of Planned Behavior Questionnaire. Results: Dog owner/dog walkers (n = 77) reported significantly (P < .05) more total walking, walking frequency, leisure and total physical activity and higher total functional ability than dog owner/nondog walkers (n = 83) and nondog owners (n = 931). Dog owner/nondog walkers reported lower intention and perceived behavioral control and a less positive attitude than dog owner/dog walkers (P < .05). Conclusions: Dog owner/ dog walkers were significantly different than the nondog walker groups in nearly every study variable. Many dog owners (48.1%) reported walking their dogs regularly and the dog owner/dog walkers participated in nearly 50% more total walking than the 2 nondog walking groups, suggesting that pet obligation may provide a purposeful activity that motivates some older dog owners to walk. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - dog ownership KW - functional ability KW - walking KW - older adults KW - physical activity KW - health KW - 2013 KW - Ability Level KW - Aging KW - Ownership KW - Walking KW - Health KW - Pets KW - Physical Activity KW - 2013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-24178-002&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - McCue, Benjamin M. AU - Blalock, Benjamin J. AU - Britton, Charles L. AU - Potts, Jeff AU - Kemerling, James AU - Isihara, Kiyosi AU - Leines, Matthew T. T1 - A Wide Temperature, Radiation Tolerant, CMOS-Compatible Precision Voltage Referencefor Extreme Radiation Environment Instrumentation Systems. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2013/06/20/Jun2013 Part 3 VL - 60 IS - 3 M3 - Article SP - 2272 EP - 2279 SN - 00189499 AB - Many design techniques have been incorporated into modern CMOS design practices to improve radiation tolerance of integrated circuits. Annular-gate NMOS structures have been proven to be significantly more radiation tolerant than the standard, straight-gate variety. Many circuits can be designed using the annular-gate NMOS and the inherently radiation tolerant PMOS. Bandgap reference circuits, however, typically require p-n junction diodes. These p-n junction diodes are the dominating factor in radiation degradation in bandgap reference circuits. This paper proposes a different approach to bandgap reference design to alleviate the radiation susceptibility presented by the p-n junction diodes. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Complementary metal oxide semiconductors -- Design & construction KW - Electronic circuit design KW - Radiation hardening (Electronics) KW - Energy gaps (Physics) KW - P-N junctions (Semiconductors) KW - Bandgap reference KW - CMOS KW - dynamic threshold MOSFET (DTMOS) KW - radiation hardening by design (RHBD) KW - total ionizing dose (TID) radiation N1 - Accession Number: 88206642; McCue, Benjamin M. 1; Blalock, Benjamin J. 1; Britton, Charles L. 2; Potts, Jeff 3; Kemerling, James 4; Isihara, Kiyosi 5; Leines, Matthew T. 6; Affiliations: 1: Department of Electrical Engineering and Computer Science, University of Tennessee, Knoxville, TN, USA; 2: Oak Ridge National Laboratory, Oak Ridge, TN, USA; 3: Principal Engineering Group Leader with Triad Semiconductor, Inc., Winston-Salem, NC, USA; 4: Chief Technical Officer with Triad Semiconductor, Inc., Winston-Salem, NC, USA; 5: Software Division with Triad Semiconductor, Inc., Winston-Salem, NC, USA; 6: United States Air Force,; Issue Info: Jun2013 Part 3, Vol. 60 Issue 3, p2272; Subject Term: Complementary metal oxide semiconductors -- Design & construction; Subject Term: Electronic circuit design; Subject Term: Radiation hardening (Electronics); Subject Term: Energy gaps (Physics); Subject Term: P-N junctions (Semiconductors); Author-Supplied Keyword: Bandgap reference; Author-Supplied Keyword: CMOS; Author-Supplied Keyword: dynamic threshold MOSFET (DTMOS); Author-Supplied Keyword: radiation hardening by design (RHBD); Author-Supplied Keyword: total ionizing dose (TID) radiation; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TNS.2013.2257850 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=88206642&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2013-26564-001 AN - 2013-26564-001 AU - Parasuraman, Raja AU - Galster, Scott T1 - Sensing, assessing, and augmenting threat detection: Behavioral, neuroimaging, and brain stimulation evidence for the critical role of attention. JF - Frontiers in Human Neuroscience JO - Frontiers in Human Neuroscience JA - Front Hum Neurosci Y1 - 2013/06/12/ VL - 7 CY - Switzerland PB - Frontiers Media S.A. SN - 1662-5161 AD - Parasuraman, Raja, Center of Excellence in Neuroergonomics, Technology and Cognition, George Mason University, 4400 University Drive, MS 3F5, Fairfax, VA, US, 22030-4444 N1 - Accession Number: 2013-26564-001. PMID: 23781194 Partial author list: First Author & Affiliation: Parasuraman, Raja; Center of Excellence in Neuroergonomics, Technology and Cognition, George Mason University, Fairfax, VA, US. Other Publishers: Frontiers Research Foundation. Release Date: 20130909. Correction Date: 20160919. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Parasuraman, Raja. Major Descriptor: Attention; Brain Stimulation; Neuroimaging; Threat. Classification: Neuropsychology & Neurology (2520). Population: Human (10). Tests & Measures: Flanker Task. Methodology: Literature Review. References Available: Y. ArtID: 273. Issue Publication Date: Jun 12, 2013. Publication History: First Posted Date: Jun 12, 2013; Accepted Date: May 26, 2013; First Submitted Date: Apr 4, 2013. Copyright Statement: This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc. Parasuraman and Galster. 2013. AB - Rapidly identifying the potentially threatening movements of other people and objects—biological motion perception and action understanding—is critical to maintaining security in many civilian and military settings. A key approach to improving threat detection in these environments is to sense when less than ideal conditions exist for the human observer, assess that condition relative to an expected standard, and if necessary use tools to augment human performance. Action perception is typically viewed as a relatively 'primitive,' automatic function immune to top-down effects. However, recent research shows that attention is a top-down factor that has a critical influence on the identification of threat-related targets. In this paper we show that detection of motion-based threats is attention sensitive when surveillance images are obscured by other movements, when they are visually degraded, when other stimuli or tasks compete for attention, or when low-probability threats must be watched for over long periods of time—all features typical of operational security settings. Neuroimaging studies reveal that action understanding recruits a distributed network of brain regions, including the superior temporal cortex, intraparietal cortex, and inferior frontal cortex. Within this network, attention modulates activation of the superior temporal sulcus (STS) and middle temporal gyrus. The dorsal frontoparietal network may provide the source of attention-modulation signals to action representation areas. Stimulation of this attention network should therefore enhance threat detection. We show that transcranial Direct Current Stimulation (tDCS) at 2mA accelerates perceptual learning of participants performing a challenging threat-detection task. Together, cognitive, neuroimaging, and brain stimulation studies provide converging evidence for the critical role of attention in the detection and understanding of threat-related intentional actions. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - sensing KW - assessing KW - threat detection KW - neuroimaging KW - brain stimulation KW - attention KW - 2013 KW - Attention KW - Brain Stimulation KW - Neuroimaging KW - Threat KW - 2013 U1 - Sponsor: Air Force Office of Scientific Research. Grant: FA9550-10-1-0385. Recipients: Parasuraman, Raja U1 - Sponsor: George Mason University, Center of Excellence in Neuroergonomics, Technology, and Cognition (CENTEC), US. Recipients: No recipient indicated UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-26564-001&site=ehost-live&scope=site UR - rparasur@gmu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - de Freitas, Adrian A.1, adrian.defreitas@usafa.edu AU - de Freitas, Michelle M.2 T1 - Classroom Live: a software-assisted gamification tool. JO - Computer Science Education JF - Computer Science Education J1 - Computer Science Education PY - 2013/06// Y1 - 2013/06// VL - 23 IS - 2 CP - 2 M3 - Article SP - 186 EP - 206 SN - 08993408 AB - Teachers have come to rely on a variety of approaches in order to elicit and sustain student interest in the classroom. One particular approach, known asgamification, seeks to improve student engagement by transforming the traditional classroom experience into a competitive multiplayer game. Initial attempts at classroom gamification relied on the teacher manually tracking student progress. At the US Air Force Academy, we wanted to experiment with a software gamification tool. Our client/server suite, dubbed Classroom Live, streamlines the gamification process for the teacher by simplifying common tasks. Simultaneously, the tool provides students with an esthetically pleasing user interface that offers in game rewards in exchange for their participation. Classroom Live is still in development, but our initial experience using the tool has been extremely positive and confirms our belief that students respond positively to gamification, even at the undergraduate level. [ABSTRACT FROM AUTHOR] KW - Symbolic & mathematical logic KW - Gamification KW - Software as a service KW - Mobile games KW - Mobile apps KW - Mobile communication systems N1 - Accession Number: 88089534; Authors:de Freitas, Adrian A. 1 Email Address: adrian.defreitas@usafa.edu; de Freitas, Michelle M. 2; Affiliations: 1: Department of Computer Science , United States Air Force Academy , Colorado Springs , CO , USA; 2: Douglas Valley Elementary School , Colorado Springs , CO , USA; Subject: Software as a service; Subject: Mobile games; Subject: Symbolic & mathematical logic; Subject: Mobile apps; Subject: Mobile communication systems; Subject: Gamification; Author-Supplied Keyword: education technology; Author-Supplied Keyword: gamification; Author-Supplied Keyword: interactive software; Author-Supplied Keyword: role playing game; Author-Supplied Keyword: student engagement; Author-Supplied Keyword: teaching methods; Number of Pages: 21p; Record Type: Article L3 - 10.1080/08993408.2013.780449 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=88089534&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR AU - Mudaliar, Saba T1 - Multiple Scattering Volume-Surface Interactions. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2013/06// Y1 - 2013/06// VL - 61 IS - 6 M3 - Article SP - 3225 EP - 3236 SN - 0018926X AB - The combined problem of scattering from random media with rough boundaries is fairly complicated. Hence, it is important to understand the scattering processes involved so that one may develop approximate methods appropriate for the application at hand. To facilitate this we have presented three different approaches: two using statistical wave theories and the third using the transport theory. Each approach gives a different perspective of the scattering processes involved. Although the transport theory is popularly used for this problem we find that certain multiple scattering volume-surface interactions are ignored in this approach. In contrast, our ‘unified approach’ properly takes into account all multiple scattering processes. One reason for this is that it treats volumetric scattering and surface scattering on an equal footing. We observe that because of multiple scattering, the contributions from volumetric scattering and surface scattering get inextricably coupled, and hence cannot be treated separately as it is done in the transport theoretic approach. However, if one component is much weaker than the other the combined problem may be split into two parts: (1) volumetric scattering, and (2) surface scattering. Thus, the computation of the difficult combined problem may be reduced to the computations of two simple problems. This splitting is not the same as that obtained when employing the single scattering approximation. Our detailed analysis of the problem has enhanced our understanding of the multiple scattering processes involved. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCATTERING (Physics) KW - SURFACE interactions KW - SURFACE phenomenon KW - SURFACES (Physics) KW - APPROXIMATION theory N1 - Accession Number: 87908953; Source Information: Jun2013, Vol. 61 Issue 6, p3225; Subject Term: SCATTERING (Physics); Subject Term: SURFACE interactions; Subject Term: SURFACE phenomenon; Subject Term: SURFACES (Physics); Subject Term: APPROXIMATION theory; Subject Term: ; Number of Pages: 12p; ; Document Type: Article; L3 - 10.1109/TAP.2013.2250893 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=87908953&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Prather, William D. AU - Giri, Dave V. AU - Gardner, Robert L. AU - Tesche, Fred M. AU - Hutchins, Robert L. AU - Giles, Joseph C. T1 - Early Developments in Sensors and Simulators at the Air Force Weapons Laboratory. JO - IEEE Transactions on Electromagnetic Compatibility JF - IEEE Transactions on Electromagnetic Compatibility J1 - IEEE Transactions on Electromagnetic Compatibility PY - 2013/06// Y1 - 2013/06// VL - 55 IS - 3 M3 - Article SP - 431 EP - 439 SN - 00189375 AB - Personnel at the Air Force Weapons Laboratory introduced many innovative concepts in electromagnetics (EM) and created new antenna and sensor designs that made possible much of the wideband electromagnetics technology we have today. Many practitioners in high power EM are familiar with wideband sensors and simulators, but may not be aware of their origin. The purpose of this paper is to describe some of the concepts from which many of the designs evolved and provide some interesting insight into the mind of Dr. Carl Baum, who created them. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electromagnetic Compatibility is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIR forces KW - ELECTROMAGNETIC pulses KW - WEAPONS KW - ANTENNAS (Electronics) -- Design & construction KW - ELECTRONIC noses -- Design & construction N1 - Accession Number: 88206738; Source Information: Jun2013, Vol. 55 Issue 3, p431; Subject Term: AIR forces; Subject Term: ELECTROMAGNETIC pulses; Subject Term: WEAPONS; Subject Term: ANTENNAS (Electronics) -- Design & construction; Subject Term: ELECTRONIC noses -- Design & construction; Subject Term: ; Number of Pages: 9p; ; Document Type: Article; L3 - 10.1109/TEMC.2013.2247767 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=88206738&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Giles, Joseph C. AU - Prather, William D. T1 - Worldwide High-Altitude Nuclear Electromagnetic Pulse Simulators. JO - IEEE Transactions on Electromagnetic Compatibility JF - IEEE Transactions on Electromagnetic Compatibility J1 - IEEE Transactions on Electromagnetic Compatibility PY - 2013/06// Y1 - 2013/06// VL - 55 IS - 3 M3 - Article SP - 475 EP - 483 SN - 00189375 AB - The five decades since the discovery that the electromagnetic pulse created by a nuclear detonation at high altitude (HEMP) threatens the survivability of strategic military and civilian electronic systems saw development and construction worldwide of many large test facilities for simulating that threat. This paper describes simulators in three categories: guided wave, dipole, and hybrid. In 2002, the International Electrotechnical Commission (IEC) published a compendium of technical information about 42 simulators in 14 countries using this classification system. This paper provides a summary of information in the compendium and describes some developments in the field since 2002. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electromagnetic Compatibility is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRCRAFT industry KW - ELECTROMAGNETIC pulses KW - ELECTRIC generators KW - ELECTRIC lines KW - INTERNATIONAL Electrotechnical Commission KW - ELECTROMAGNETIC theory KW - TECHNICAL information N1 - Accession Number: 88206730; Source Information: Jun2013, Vol. 55 Issue 3, p475; Subject Term: AIRCRAFT industry; Subject Term: ELECTROMAGNETIC pulses; Subject Term: ELECTRIC generators; Subject Term: ELECTRIC lines; Subject Term: INTERNATIONAL Electrotechnical Commission; Subject Term: ELECTROMAGNETIC theory; Subject Term: TECHNICAL information; Subject Term: ; Number of Pages: 9p; ; Document Type: Article; L3 - 10.1109/TEMC.2013.2238239 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=88206730&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Giri, D. V. AU - Prather, William D. T1 - High-Altitude Electromagnetic Pulse (HEMP) Risetime Evolution of Technology and Standards Exclusively for E1 Environment. JO - IEEE Transactions on Electromagnetic Compatibility JF - IEEE Transactions on Electromagnetic Compatibility J1 - IEEE Transactions on Electromagnetic Compatibility PY - 2013/06// Y1 - 2013/06// VL - 55 IS - 3 M3 - Article SP - 484 EP - 491 SN - 00189375 AB - There are many different definitions of the risetime of a transient waveform. In the context of high-altitude electromagnetic pulse (HEMP) standards, the 10–90% risetime of an idealized double exponential waveform has been defined and used for many decades. However, such a risetime definition is not strictly applicable to the transient voltage out of a pulse generator, since no practical switch can close in zero time. In this paper, we discuss various definitions and their applicability. More importantly, pulse power technology has evolved over five decades and the achievable risetimes have come down from 10s of nanoseconds to 10s of picoseconds. As a corollary, the highest achievable voltage gradient has been going upwards of 10^15 V/s. In this paper, we review the definitions of risetime, and trace the evolution of technology and HEMP Standards, exclusively for the E1 environments. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electromagnetic Compatibility is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TIME-domain analysis KW - TRANSIENT analysis KW - ELECTROMAGNETISM KW - ELECTRIC switchgear KW - ELECTRIC potential KW - CAPACITORS KW - ELECTRIC generators N1 - Accession Number: 88206724; Source Information: Jun2013, Vol. 55 Issue 3, p484; Subject Term: TIME-domain analysis; Subject Term: TRANSIENT analysis; Subject Term: ELECTROMAGNETISM; Subject Term: ELECTRIC switchgear; Subject Term: ELECTRIC potential; Subject Term: CAPACITORS; Subject Term: ELECTRIC generators; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.1109/TEMC.2012.2235445 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=88206724&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Wraight, Anthony AU - Prather, William D. AU - Sabath, Frank T1 - Developments in Early-Time (E1) High-Altitude Electromagnetic Pulse (HEMP) Test Methods. JO - IEEE Transactions on Electromagnetic Compatibility JF - IEEE Transactions on Electromagnetic Compatibility J1 - IEEE Transactions on Electromagnetic Compatibility PY - 2013/06// Y1 - 2013/06// VL - 55 IS - 3 M3 - Article SP - 492 EP - 499 SN - 00189375 AB - This paper describes developments in high-altitude electromagnetic pulse (HEMP) test methods. More specifically, we describe the most commonly used HEMP test methods and associated measurement systems used to assess systems and equipment to the early-time (E1) effects of HEMP. Short case studies of the application of these test methods are included. Finally, computational electromagnetics (CEM) is a subject that has advanced significantly in recent years. This paper summarizes developments in this area and the supporting role that CEM has when undertaking assessments of the impact of HEMP on systems. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electromagnetic Compatibility is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC pulses KW - TEST methods KW - COMPUTATIONAL electromagnetics KW - APPLICATION software KW - CASE study (Research) N1 - Accession Number: 88206740; Source Information: Jun2013, Vol. 55 Issue 3, p492; Subject Term: ELECTROMAGNETIC pulses; Subject Term: TEST methods; Subject Term: COMPUTATIONAL electromagnetics; Subject Term: APPLICATION software; Subject Term: CASE study (Research); Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.1109/TEMC.2013.2241442 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=88206740&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Prather, William D. AU - Cafferky, Jory AU - Ortiz, Lenny AU - Anderson, Jay T1 - CW Measurements of Electromagnetic Shields. JO - IEEE Transactions on Electromagnetic Compatibility JF - IEEE Transactions on Electromagnetic Compatibility J1 - IEEE Transactions on Electromagnetic Compatibility PY - 2013/06// Y1 - 2013/06// VL - 55 IS - 3 M3 - Article SP - 500 EP - 507 SN - 00189375 AB - When designing and qualifying hardened systems to an electromagnetic pulse (EMP) or electromagnetic interference standard, one needs a practical way to measure the effectiveness of the shield. It is not possible to test every system in a threat-level EMP test facility, so alternative methods have been developed. This paper reviews the advances made in low-level continuous wave measurement technology since the last EMC Special Issue published in 1978. These include system-level illumination as well as localized test methods for individual hardening elements. Available illuminating antennas for use on aircraft, ships, and ground-based communications systems are reviewed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electromagnetic Compatibility is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC pulses KW - AIRCRAFT industry KW - ELECTRIC lines KW - ELECTRIC impedance KW - CABLE shielding KW - ELECTRIC resistance measurement N1 - Accession Number: 88206731; Source Information: Jun2013, Vol. 55 Issue 3, p500; Subject Term: ELECTROMAGNETIC pulses; Subject Term: AIRCRAFT industry; Subject Term: ELECTRIC lines; Subject Term: ELECTRIC impedance; Subject Term: CABLE shielding; Subject Term: ELECTRIC resistance measurement; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.1109/TEMC.2012.2237553 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=88206731&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Choi, Sukwon AU - Heller, Eric R. AU - Dorsey, Donald AU - Vetury, Ramakrishna AU - Graham, Samuel T1 - Thermometry of AlGaN/GaN HEMTs Using Multispectral Raman Features. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices J1 - IEEE Transactions on Electron Devices PY - 2013/06// Y1 - 2013/06// VL - 60 IS - 6 M3 - Article SP - 1898 EP - 1904 SN - 00189383 AB - In this paper, we utilize micro-Raman spectroscopy to measure temperature and stress in state-of-the-art AlGaN/GaN HEMTs. A rigorous discussion on the physical accuracy, precision, and precautions for diverse Raman thermometry methods is developed. Thermometry techniques utilizing shifts in a single Raman Stokes peak position underpredict the channel temperature due to induction of operational thermoelastic stress in operating devices. Utilizing the change in phonon linewidth by employing a proper reference condition gives true temperature results. Making use of frequency shifts in both the E2(high) and A1(LO) phonon modes offers accurate and time-efficient means to determine the state of temperature and thermal stress in operating AlGaN/GaN HEMTs presuming that linear relations between phonon frequencies and temperature/stress are well determined. Useful applications of this method such as monitoring stress in GaN wafers between fabrication steps and Raman thermography on AlGaN/GaN HEMTs are demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOMETRY KW - ALUMINUM compounds KW - GALLIUM nitride KW - TEMPERATURE measurements KW - STRAINS & stresses (Mechanics) KW - RAMAN spectroscopy N1 - Accession Number: 87693844; Source Information: Jun2013, Vol. 60 Issue 6, p1898; Subject Term: THERMOMETRY; Subject Term: ALUMINUM compounds; Subject Term: GALLIUM nitride; Subject Term: TEMPERATURE measurements; Subject Term: STRAINS & stresses (Mechanics); Subject Term: RAMAN spectroscopy; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TED.2013.2255102 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=87693844&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Shiffler, Don AU - Seviour, Rebecca AU - Luchinskaya, Elena AU - Stranford, Erin AU - Tang, Wilkin AU - French, David T1 - Study of Split-Ring Resonators as a Metamaterial for High-Power Microwave Power Transmission and the Role of Defects. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2013/06// Y1 - 2013/06// VL - 41 IS - 6 M3 - Article SP - 1679 EP - 1685 SN - 00933813 AB - Microwave metamaterials show promise in numerous low-power applications, ranging from strip lines to antennas. In general, metamaterials allow microwave designers to obtain electromagnetic characteristics not typically available in nature, leading to new behavior as well as reductions in the size of typical devices. High-power microwave (HPM) sources were efficient in the conventional microwave source community. We consider a specific use of metamaterials as a method to reduce the size of waveguide used for power transmission, particularly, a configuration in which an array of split-ring resonators (SRRs), forming a “mu-negative” structure, allows transmission of power in a waveguide well below the cutoff frequency. This configuration would not be used in an actual HPM device, but explores the methods and considerations that might be required for developing a metamaterial structure for either making HPM sources more compact or developing new types of interaction at these high powers. For any HPM application, a microwave structure must be able to sustain high electric and magnetic fields, as well as high peak and possibly average power. The challenge for metamaterials consists of devising the subwavelength structures (a defining characteristic of metamaterials) that can sustain such fields. In particular, one must understand the sensitivity of any metamaterial system to changes in the individual elements, which in high power pertains mainly to the loss of an individual resonator element. As such a sample system, we explore the physical operating characteristics of the waveguide system loaded with an array of SRRs, particularly the role of defects on its properties. Such defects would form an important feature in any high-power application in which subwavelength structures can be damaged by high field stresses. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAMATERIALS -- Research KW - POWER transmission -- Research KW - ANTENNAS (Electronics) -- Research KW - WAVELENGTHS KW - WAVEGUIDES KW - ELECTROMAGNETISM N1 - Accession Number: 88058035; Source Information: Jun2013, Vol. 41 Issue 6, p1679; Subject Term: METAMATERIALS -- Research; Subject Term: POWER transmission -- Research; Subject Term: ANTENNAS (Electronics) -- Research; Subject Term: WAVELENGTHS; Subject Term: WAVEGUIDES; Subject Term: ELECTROMAGNETISM; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TPS.2013.2251669 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=88058035&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Rothstein, Jesse1,2, rothstein@berkeley.edu AU - Wozny, Nathan3 T1 - Permanent Income and the Black-White Test Score Gap. JO - Journal of Human Resources JF - Journal of Human Resources J1 - Journal of Human Resources PY - 2013///Summer2013 Y1 - 2013///Summer2013 VL - 48 IS - 3 CP - 3 M3 - Article SP - 509 EP - 544 SN - 0022166X AB - Analysts often examine the black-white test score gap conditional on current family income. We describe a method for identifying the gap conditional on the family's permanent income. Current income explains only about half as much of the black-white test gap as does permanent income, and the gap among families with the same permanent income is only 0.2 to 0.3 standard deviations in two commonly used samples. When we add permanent income to the controls used by Fryer and Levitt (2006), the unexplained gap in third grade shrinks below 0.15 SDs, less than half of what is found with their controls. [ABSTRACT FROM AUTHOR] KW - Families KW - Income gap -- Research KW - Income -- Research KW - Family research KW - Wage differentials -- Research N1 - Accession Number: 90154636; Authors:Rothstein, Jesse 1,2 Email Address: rothstein@berkeley.edu; Wozny, Nathan 3; Affiliations: 1: Associate professor of public policy and economics, Goldman School of Public Policy, Berkeley; 2: Department of Economics, University of California, Berkeley; 3: Assistant professor of economics, United States Air Force Academy; Subject: Income gap -- Research; Subject: Families; Subject: Income -- Research; Subject: Family research; Subject: Wage differentials -- Research; Number of Pages: 36p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=90154636&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR AU - Majchrzak, Ann AU - Wagner, Christian AU - Yates, Dave T1 - THE IMPACT OF SHAPING ON KNOWLEDGE REUSE FOR ORGANIZATIONAL IMPROVEMENT WITH WIKIS. JO - MIS Quarterly JF - MIS Quarterly Y1 - 2013/06// VL - 37 IS - 2 M3 - Article SP - 455 EP - A12 PB - MIS Quarterly SN - 02767783 AB - In this study, we explore the Wiki affordance of enabling shaping behavior within organizational intranets supported by Wikis. Shaping is the continuous revision of one's own and others' contributions to a Wiki. Shaping promotes knowledge reuse through improved knowledge integration. Recognizing and clarifying the role of shaping allows us to theorize new ways in which knowledge resources affect knowledge reuse. We examine the role of three knowledge resources of a Wiki contributor: knowledge depth, knowledge breadth, and assessment of the level of development of the Wiki community's transactive memory system. We offer preliminary evidence based on a sample of experienced organizational Wiki users that the three different knowledge resources have differential effects on shaping, that these effects differ from the effects on the more common user behavior of simply adding domain knowledge to a Wiki, and that shaping and adding each independently affect contributors' perceptions that their knowledge in the Wiki has been reused for organizational improvement. By empirically distinguishing between the different knowledge antecedents and consequences of shaping and adding, we derive implications for theory and research on knowledge integration and reuse. [ABSTRACT FROM AUTHOR] AB - Copyright of MIS Quarterly is the property of MIS Quarterly and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANIZATIONAL change KW - INTRANETS (Computer networks) KW - INFORMATION sharing KW - KNOWLEDGE management KW - KNOWLEDGE-based theory of the firm KW - WIKIS (Computer science) KW - INTEGRATION (Theory of knowledge) KW - TRANSACTIVE model (Communication) KW - RESPONSE styles (Examinations) KW - MULTICOLLINEARITY KW - CRONBACH'S alpha (Statistics) KW - EXPLORATORY factor analysis KW - Intranet KW - KMS KW - knowledge breadth KW - knowledge depth KW - knowledge management KW - knowledge reuse KW - shaping KW - transactive memory KW - Wiki N1 - Accession Number: 87370679; Majchrzak, Ann 1,2; Email Address: majchrza@usc.edu; Wagner, Christian 3,4; Email Address: c.wagner@cityu.edu.hk; Yates, Dave 5; Email Address: hdjryates@gmail.com; Affiliations: 1: Information Systems, Marshall School of Business, University of Southern California, Los Angeles, CA 90089 U.S.A.; 2: Esade Business School, Universidad Ramon Llull, Barcelona, SPAIN; 3: School of Creative Media and Department of Information Systems, City University of Hong Kong; 4: Tat Chee Avenue, Kowloon, Hong Kong SAR; 5: United States Air Force; Issue Info: Jun2013, Vol. 37 Issue 2, p455; Thesaurus Term: ORGANIZATIONAL change; Thesaurus Term: INTRANETS (Computer networks); Thesaurus Term: INFORMATION sharing; Thesaurus Term: KNOWLEDGE management; Thesaurus Term: KNOWLEDGE-based theory of the firm; Subject Term: WIKIS (Computer science); Subject Term: INTEGRATION (Theory of knowledge); Subject Term: TRANSACTIVE model (Communication); Subject Term: RESPONSE styles (Examinations); Subject Term: MULTICOLLINEARITY; Subject Term: CRONBACH'S alpha (Statistics); Subject Term: EXPLORATORY factor analysis; Author-Supplied Keyword: Intranet; Author-Supplied Keyword: KMS; Author-Supplied Keyword: knowledge breadth; Author-Supplied Keyword: knowledge depth; Author-Supplied Keyword: knowledge management; Author-Supplied Keyword: knowledge reuse; Author-Supplied Keyword: shaping; Author-Supplied Keyword: transactive memory; Author-Supplied Keyword: Wiki; Number of Pages: 27p; Illustrations: 2 Color Photographs, 1 Diagram, 10 Charts, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=87370679&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Mastroianni, George R. T1 - Looking Back: Understanding Abu Ghraib. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College J1 - Parameters: U.S. Army War College PY - 2013///Summer2013 Y1 - 2013///Summer2013 VL - 43 IS - 2 M3 - Article SP - 53 EP - 65 SN - 00311723 AB - A decade ago, in the autumn of 2003, a small group of soldiers criminally abused detainees at the Abu Ghraib prison in Iraq. Two divergent narratives explaining these events emerged: a "bad apple" narrative and a "bad barrel" narrative. Neither does justice to the complex interplay of policy, organizational, and individual factors that contributed to these tragic events. A perfect storm of poor leadership, chaotic and confusing policy changes, and a small group of corrupt and immoral soldiers produced this fiasco with global consequences. [ABSTRACT FROM AUTHOR] AB - Copyright of Parameters: U.S. Army War College is the property of U.S. Army War College and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRISONS -- Iraq KW - MILITARY personnel -- Abuse of KW - MILITARY personnel -- Sexual behavior KW - MYERS, Gary KW - MILITARY detainees KW - MILITARY interrogation N1 - Accession Number: 91578880; Source Information: Summer2013, Vol. 43 Issue 2, p53; Subject Term: PRISONS -- Iraq; Subject Term: MILITARY personnel -- Abuse of; Subject Term: MILITARY personnel -- Sexual behavior; Subject Term: MYERS, Gary; Subject Term: MILITARY detainees; Subject Term: MILITARY interrogation; Subject Term: ; Number of Pages: 13p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=91578880&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2013-12057-007 AN - 2013-12057-007 AU - Jackson, Melinda L. AU - Gunzelmann, Glenn AU - Whitney, Paul AU - Hinson, John M. AU - Belenky, Gregory AU - Rabat, Arnaud AU - Van Dongen, Hans P. A. T1 - Deconstructing and reconstructing cognitive performance in sleep deprivation. JF - Sleep Medicine Reviews JO - Sleep Medicine Reviews JA - Sleep Med Rev Y1 - 2013/06// VL - 17 IS - 3 SP - 215 EP - 225 CY - Netherlands PB - Elsevier Science SN - 1087-0792 AD - Van Dongen, Hans P. A., Sleep and Performance Research Center, Washington State University, 702 South Campus Facility, P.O. Box 1495, Spokane, WA, US, 99210-1495 N1 - Accession Number: 2013-12057-007. PMID: 22884948 Partial author list: First Author & Affiliation: Jackson, Melinda L.; Sleep and Performance Research Center, Washington State University, Spokane, WA, US. Release Date: 20130603. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Jackson, Melinda L. Major Descriptor: Cognitive Ability; Cognitive Impairment; Sleep Deprivation; Sleepiness. Classification: Physical & Somatoform & Psychogenic Disorders (3290). Population: Human (10). Methodology: Literature Review. References Available: Y. Page Count: 11. Issue Publication Date: Jun, 2013. Publication History: First Posted Date: Oct 9, 2012; Accepted Date: Jun 26, 2012; Revised Date: Jun 25, 2012; First Submitted Date: Aug 9, 2011. Copyright Statement: All rights reserved. Elsevier Ltd. 2012. AB - Mitigation of cognitive impairment due to sleep deprivation in operational settings is critical for safety and productivity. Achievements in this area are hampered by limited knowledge about the effects of sleep loss on actual job tasks. Sleep deprivation has different effects on different cognitive performance tasks, but the mechanisms behind this task-specificity are poorly understood. In this context it is important to recognize that cognitive performance is not a unitary process, but involves a number of component processes. There is emerging evidence that these component processes are differentially affected by sleep loss. Experiments have been conducted to decompose sleep-deprived performance into underlying cognitive processes using cognitive-behavioral, neuroimaging and cognitive modeling techniques. Furthermore, computational modeling in cognitive architectures has been employed to simulate sleep-deprived cognitive performance on the basis of the constituent cognitive processes. These efforts are beginning to enable quantitative prediction of the effects of sleep deprivation across different task contexts. This paper reviews a rapidly evolving area of research, and outlines a theoretical framework in which the effects of sleep loss on cognition may be understood from the deficits in the underlying neurobiology to the applied consequences in real-world job tasks. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cognitive performance KW - sleep deprivation KW - cognitive impairment KW - sleepiness KW - 2013 KW - Cognitive Ability KW - Cognitive Impairment KW - Sleep Deprivation KW - Sleepiness KW - 2013 U1 - Sponsor: National Institutes of Health, US. Grant: HL105768. Recipients: Jackson, Melinda L. U1 - Sponsor: National Institutes of Health, US. Grant: CA167691. Recipients: Hinson, John M. U1 - Sponsor: TRB. Grant: SHRP R-03. Other Details: Battelle Memorial Institute. Recipients: Van Dongen, Hans P. A. U1 - Sponsor: US Air Force Office of Scientific Research, US. Grant: 09RH06COR; 10RH04COR. Recipients: Gunzelmann, Glenn U1 - Sponsor: US Air Force Office of Scientific Research. Grant: FA9550-09-1-0136; FA9550-09-1-0242. Recipients: Van Dongen, Hans P. A. DO - 10.1016/j.smrv.2012.06.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-12057-007&site=ehost-live&scope=site UR - UR - ORCID: 0000-0003-4976-8101 UR - hvd@wsu.edu UR - rabat.arnaud@gmail.com UR - belenky@wsu.edu UR - hinson@wsu.edu UR - pwhitney@wsu.edu UR - glenn.gunzelmann@wpafb.af.mil UR - melinda.jackson@vu.edu.au DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-25628-006 AN - 2013-25628-006 AU - Lanaj, Klodiana AU - Hollenbeck, John R. AU - Ilgen, Daniel R. AU - Barnes, Christopher M. AU - Harmon, Stephen J. T1 - The double-edged sword of decentralized planning in multiteam systems. JF - Academy of Management Journal JO - Academy of Management Journal JA - Acad Manage J Y1 - 2013/06// VL - 56 IS - 3 SP - 735 EP - 757 CY - US PB - Academy of Management SN - 0001-4273 SN - 1948-0989 N1 - Accession Number: 2013-25628-006. Partial author list: First Author & Affiliation: Lanaj, Klodiana; Michigan State University, US. Release Date: 20130805. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Decentralization; Group Dynamics; Teams. Minor Descriptor: Aspirations; Communication; Expectations; Failure; Initiative; Risk Taking; Systems. Classification: Personnel Evaluation & Job Performance (3630). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 23. Issue Publication Date: Jun, 2013. Copyright Statement: All rights reserved. Academy of Management AB - The literature on small stand-alone teams has suggested that decentralization has predominantly positive features. However, in multiteam systems, the presence of other highly interdependent teams adds a level of complexity that may preclude generalizing from teams to multiteam systems. We studied the effects of decentralized planning in 210 multiteam systems, each composed of three six-person, functionally specialized component teams. As has previous research, we find that decentralized planning has positive effects on multiteam system performance, attributable to enhanced proactivity and aspiration levels. However, we also find that the positive effects associated with decentralized planning are offset by the even stronger negative effects attributable to excessive risk seeking and coordination failures. We discuss the implications for theories of intrateam and interteam dynamics, along with the applied implications for designing empowerment interventions in team and multiteam contexts. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - multiteam system performance KW - decentralized planning KW - proactivity KW - aspiration level KW - risk seeking KW - coordination failures KW - intrateam & interteam dynamics KW - 2013 KW - Decentralization KW - Group Dynamics KW - Teams KW - Aspirations KW - Communication KW - Expectations KW - Failure KW - Initiative KW - Risk Taking KW - Systems KW - 2013 DO - 10.5465/amj.2011.0350 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-25628-006&site=ehost-live&scope=site UR - ORCID: 0000-0003-2520-6200 UR - UR - stephen.harmon@usafa.edu UR - christopher.montgomery.barnes@gmail.com UR - Ilgen@msu.edu UR - jrh@msu.edu UR - Lanaj@bus.msu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-22449-001 AN - 2013-22449-001 AU - Johnson, Erica M. AU - Traver, Kyle L. AU - Hoffman, Stuart W. AU - Harrison, Catherine R. AU - Herman, James P. T1 - Environmental enrichment protects against functional deficits caused by traumatic brain injury. JF - Frontiers in Behavioral Neuroscience JO - Frontiers in Behavioral Neuroscience JA - Front Behav Neurosci Y1 - 2013/05/21/ VL - 7 CY - Switzerland PB - Frontiers Media S.A. SN - 1662-5153 AD - Johnson, Erica M., Air Force Research Laboratory, 711th Human Performance Wing, Wright Patterson Air Force Base, 2510 5th Street, Dayton, OH, US, 45433 N1 - Accession Number: 2013-22449-001. PMID: 23734108 Partial author list: First Author & Affiliation: Johnson, Erica M.; Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati, Cincinnati, OH, US. Other Publishers: Frontiers Research Foundation. Release Date: 20130715. Correction Date: 20160919. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Animal Environments; Prefrontal Cortex; Sensory Neglect; Traumatic Brain Injury. Minor Descriptor: Rats; Environmental Enrichment. Classification: Neuropsychology & Neurology (2520). Population: Animal (20); Male (30). Methodology: Empirical Study; Quantitative Study. References Available: Y. ArtID: 44. Issue Publication Date: May 21, 2013. Publication History: First Posted Date: May 21, 2013; Accepted Date: Apr 29, 2013; First Submitted Date: Dec 28, 2012. Copyright Statement: This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc. Johnson, Traver, Hoffman, Harrison and Herman. 2013. AB - Environmental enrichment (EE) increases cortical weight, neuronal density, dendritic branching, and angiogenesis, all of which may be critical for functional recovery following insult. Our study was designed to determine possible benefits of pre-exposure to EE in preventing functional deficits following traumatic brain injury (TBI) to the prefrontal cortex. To examine the benefit of EE, adult male rats were placed in an enriched environment for 15 days. Enrichment was provided through social interaction, exercise, olfactory stimulation, and new objects/toys to explore. Following enrichment, experimental and age-matched controls were subjected to a moderate medial prefrontal cortex injury via controlled cortical impact (CCI). After 1 week recovery, animals were behaviorally tested to assess memory, anxiety, and sensory neglect. Lesion-induced deficits in spatial memory [Morris water maze (MWM)] were significantly attenuated in EE pre-exposed rats 18–21 days following injury. In addition, TBI-induced sensory neglect was significantly reduced in EE rats relative to non-enriched animals. No differences in anxiety-like behavior on the elevated plus maze (EPM) were detected. The behavioral data suggest that EE is neuroprotective when applied prior to TBI, resulting in improved recovery following injury. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - environmental enrichment KW - traumatic brain injuries KW - prefrontal cortex KW - sensory neglect KW - 2013 KW - Animal Environments KW - Prefrontal Cortex KW - Sensory Neglect KW - Traumatic Brain Injury KW - Rats KW - Environmental Enrichment KW - 2013 U1 - Sponsor: Wright Patterson Air Force Base, Air Force Research Laboratory, US. Recipients: No recipient indicated U1 - Sponsor: Defense and Veterans Brain Injury Center, US. Recipients: No recipient indicated DO - 10.3389/fnbeh.2013.00044 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-22449-001&site=ehost-live&scope=site UR - ORCID: 0000-0003-3571-2406 UR - UR - erica.johnson.7@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Hearn, John D. AU - Weber, Richard AU - Nichols, Robert AU - Henley, Michael V. AU - Fox, Shannon T1 - Deposition of Cl2 on soils during outdoor releases. JO - Journal of Hazardous Materials JF - Journal of Hazardous Materials Y1 - 2013/05/15/ VL - 252-253 M3 - Article SP - 107 EP - 114 SN - 03043894 AB - Abstract: Synthetic soil blends were exposed to dense chlorine (Cl2) plumes released at Dugway Proving Ground, UT, during Spring 2010 with the purpose of determining the magnitude of Cl2 deposition onto soil and assessing its potential for attenuating a high-concentration plume. Samples were exposed at varying distances from the release point to include exposure to the pooling liquid (2–3m) and dense vapor (10–17m). Following exposure, soil samples were cored, fractionated vertically and analyzed for chloride (Cl–) to quantify the integrated amount of Cl2 deposited. Cl− was detected as deep as 4cm in samples exposed to dense Cl2 vapor and in the deepest fractions (13cm) of samples exposed to liquid Cl2. Chloride concentration, [Cl–], in the soil samples positively correlated with soil mass fractions of organic matter and water, and while their individual contributions to Cl2 deposition could not be quantitatively determined, the data suggest that organic matter was the primary contributor. [Cl–] results from the top vertical fractions (1.3cm nearest the surface) were used in an analysis to determine the magnitude of deposition as a loss term under low-wind (≤1.6m/s) conditions. The analysis revealed up to 50% of a 1814-kg release could be deposited within 20m from the release point for soil with high organic matter (43%) and/or water content (29%). [Copyright &y& Elsevier] AB - Copyright of Journal of Hazardous Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Chlorine in soils KW - Sedimentation & deposition KW - Soil sampling KW - Humus KW - Soil pollution KW - Plumes (Fluid dynamics) KW - Chlorine deposition KW - Consequence assessment KW - Jack Rabbit N1 - Accession Number: 89259578; Hearn, John D. 1; Email Address: john.hearn@tyndall.af.mil; Weber, Richard 2; Nichols, Robert 3; Henley, Michael V. 1; Fox, Shannon 4; Affiliations: 1: Air Force Research Laboratory, Airbase Technologies Division, 139 Barnes Drive, Suite 2, Tyndall Air Force Base, FL 32403-5323, United States; 2: Applied Research Associates, 139 Barnes Drive, Suite 2, Tyndall Air Force Base, FL 32403-5323, United States; 3: Universal Technology Corporation, 139 Barnes Drive, Suite 2, Tyndall Air Force Base, FL 32403-5323, United States; 4: Chemical Security Analysis Center, Department of Homeland Security, Aberdeen Proving Ground, MD, United States; Issue Info: May2013, Vol. 252-253, p107; Thesaurus Term: Chlorine in soils; Thesaurus Term: Sedimentation & deposition; Thesaurus Term: Soil sampling; Thesaurus Term: Humus; Thesaurus Term: Soil pollution; Subject Term: Plumes (Fluid dynamics); Author-Supplied Keyword: Chlorine deposition; Author-Supplied Keyword: Consequence assessment; Author-Supplied Keyword: Jack Rabbit; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jhazmat.2013.02.038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=89259578&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Myers, Oliver J AU - Currie, George AU - Rudd, Jonathan AU - Spayde, Dustin AU - Bolden, Nydeia Wright T1 - Damage detection of unidirectional carbon fiber–reinforced laminates with embedded magnetostrictive particulates: A preliminary study. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2013/05/15/ VL - 24 IS - 8 M3 - Article SP - 991 EP - 1006 SN - 1045389X AB - Defects in composite laminates are difficult to detect because of the conductive and paramagnetic properties of composite materials. Timely detection of defects in composite laminates can improve reliability. This research illustrates the preliminary analysis and detection of delaminations in carbon fiber laminate beams using a single layer of magnetostrictive particles and noncontacting concentric magnetic excitation and sensing coils. The baseline analytical models also begin to address the intrusive nature of the magnetostrictive particles as well as relate the applied excitation field with the stress and magnetic flux densities induced in the magnetostrictive layer. Numerical methods are used to begin to characterize the presence of magnetostrictive particles in the laminate and the behavior of the magnetostrictive particles in relationship to the magnetic field used during sensing. Unidirectional laminates with embedded delaminations are used for simulations and experimentations. A novel, yet simplified fabrication method is discussed to ensure consistent scanning and sensing capabilities. The nondestructive evaluation scanning experiments were conducted with various shapes and sizes of damages introduced into carbon fiber–reinforced polymeric composite structures. The results demonstrate high potential for magnetostrictive particles as a low-cost, noncontacting, and reliable sensor for nondestructive evaluation of composite materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON fibers KW - LAMINATED materials KW - MAGNETOSTRICTION KW - PARAMAGNETIC materials KW - MAGNETIC flux density KW - MAGNETIC fields KW - POLYMERIC composites KW - Magnetostrictive KW - sensor KW - structural health monitoring N1 - Accession Number: 87519899; Myers, Oliver J 1; Currie, George 1; Rudd, Jonathan 1; Spayde, Dustin 1; Bolden, Nydeia Wright 2; Affiliations: 1: Mississippi State University, Mississippi State, MS, USA; 2: Air Force Research Laboratory Munitions Directorate, Flight Vehicles Integration Branch, Florida, USA; Issue Info: May2013, Vol. 24 Issue 8, p991; Subject Term: CARBON fibers; Subject Term: LAMINATED materials; Subject Term: MAGNETOSTRICTION; Subject Term: PARAMAGNETIC materials; Subject Term: MAGNETIC flux density; Subject Term: MAGNETIC fields; Subject Term: POLYMERIC composites; Author-Supplied Keyword: Magnetostrictive; Author-Supplied Keyword: sensor; Author-Supplied Keyword: structural health monitoring; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 16p; Document Type: Article; Full Text Word Count: 6852 L3 - 10.1177/1045389X12465134 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=87519899&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Keren, Hila AU - Mort, Joel AU - Boyer, Pascal AU - Weiss, Omri AU - Eilam, David T1 - Irrelevant idiosyncratic acts as preparatory, confirmatory, or transitional phases in motor behaviour. JO - Behaviour JF - Behaviour Y1 - 2013/05// VL - 150 IS - 5 M3 - Article SP - 547 EP - 568 PB - Brill Academic Publishers SN - 00057959 AB - Motor behaviours typically include acts that may seem irrelevant for the goal of the task. These unnecessary idiosyncratic acts are excessively manifested in certain activities, such as sports or compulsive rituals. Using the shared performance (commonness) of acts as a proxy for their relevance to the current task, we analysed motor behaviour in daily tasks, sport-related tasks, and obsessive-compulsive disorder (OCD) tasks. For each task, these motor behaviours comprised common acts that were performed by all the individuals, and idiosyncratic acts that were performed by only some individuals. In all three tasks there was a temporal section that included all the common acts (termed 'body'). This body section was preceded by a sequence of idiosyncratic acts that we termed 'head', and was followed by another sequence of idiosyncratic acts that we termed 'tail'. While both head and tail sections were relatively short in the daily tasks, the head was relatively long and the tail largely absent in sport-related tasks, which have a definite end and high stakes. In contrast, OCD behaviour had a relatively long tail. In light of these results, we suggest that the head is a preparatory phase and the tail a confirmatory phase. The head may be viewed as a warm-up phase for the pragmatic section of the task ('body'), and the tail as a cool-down phase. Finally, we suggest that rituals may be viewed as a descendant of pragmatic activities, which differentially feature a greater terminal phase of idiosyncratic acts in OCD, and an extended initial phase of idiosyncratic acts in sport rituals. [ABSTRACT FROM AUTHOR] AB - Copyright of Behaviour is the property of Brill Academic Publishers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Obsessive-compulsive disorder KW - Motor ability KW - Task performance KW - Pragmatics KW - Neuroses KW - Warmup KW - adjunctive behaviour KW - displacement activity KW - motor routines KW - OCD rituals KW - sport rituals N1 - Accession Number: 86993216; Keren, Hila 1; Mort, Joel 2; Boyer, Pascal 3,4; Weiss, Omri 1; Eilam, David 1; Email Address: eilam@post.tau.ac.il; Affiliations: 1: Department of Zoology, Tel-Aviv University, Ramat-Aviv 69978, Israel; 2: 711th Human Performance Wing, US Air Force Research Laboratory, WPAFB, OH, USA; 3: Department of Psychology, Washington University, St. Louis, MO, USA; 4: Department of Anthropology, Washington University, St. Louis, MO, USA; Issue Info: 2013, Vol. 150 Issue 5, p547; Subject Term: Obsessive-compulsive disorder; Subject Term: Motor ability; Subject Term: Task performance; Subject Term: Pragmatics; Subject Term: Neuroses; Subject Term: Warmup; Author-Supplied Keyword: adjunctive behaviour; Author-Supplied Keyword: displacement activity; Author-Supplied Keyword: motor routines; Author-Supplied Keyword: OCD rituals; Author-Supplied Keyword: sport rituals; Number of Pages: 22p; Illustrations: 3 Diagrams, 2 Charts, 1 Graph; Document Type: Article L3 - 10.1163/1568539X-00003071 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=86993216&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Baron, Sally J.F. T1 - Inaction speaks louder than words: The problems of passivity JO - Business Horizons JF - Business Horizons Y1 - 2013/05// VL - 56 IS - 3 M3 - Article SP - 301 EP - 311 SN - 00076813 AB - Abstract: Much has been written about bystander apathy, which occurs when an outsider (i.e., the bystander) is hesitant to act during a situation that clearly calls for action. However, what about when the individual called to act is an insider? This article asserts that insiders (i.e., players, or organizational actors) exhibit similar passive behaviors but not because they are apathetic. Players who are internal to the organization and are often responsible for the outcome are expected to act. Rather, when confounded by ambiguous situations, obfuscated communications, time pressure, and confusion, players often stand by befuddled. This article surveys two such cases. First is the recent case of Joe Paterno, the famed and beloved Penn State football coach of 62 years whose otherwise remarkable career was tainted by his failure to adequately act following a child abuse allegation of a staff member. Second is the case of the Vancouver Olympic Committee and the death of a young athlete on their newly built luge run. Those responsible failed to act when the danger of the track''s extreme speeds were well known. The article compares the two cases and concludes by proposing remedies to mitigate inaction. [Copyright &y& Elsevier] AB - Copyright of Business Horizons is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMMUNICATION in organizations KW - PASSIVITY (Psychology) KW - BYSTANDER effect (Psychology) KW - APATHY KW - FOOTBALL coaches KW - OLYMPIC Winter Games (21st : 2010 : Vancouver, B.C.) KW - TIME pressure KW - Bystander KW - Crisis management KW - Joe Paterno KW - Player KW - Sports KW - Vancouver Olympics KW - Whistleblower KW - PENNSYLVANIA Station (New York, N.Y.) N1 - Accession Number: 87397457; Baron, Sally J.F. 1; Email Address: sally.baron@usafa.edu; Affiliations: 1: United States Air Force Academy, 2354 Fairchild Drive, United States Air Force Academy, CO 80840-6208, U.S.A.; Issue Info: May2013, Vol. 56 Issue 3, p301; Thesaurus Term: COMMUNICATION in organizations; Subject Term: PASSIVITY (Psychology); Subject Term: BYSTANDER effect (Psychology); Subject Term: APATHY; Subject Term: FOOTBALL coaches; Subject Term: OLYMPIC Winter Games (21st : 2010 : Vancouver, B.C.); Subject Term: TIME pressure; Author-Supplied Keyword: Bystander; Author-Supplied Keyword: Crisis management; Author-Supplied Keyword: Joe Paterno; Author-Supplied Keyword: Player; Author-Supplied Keyword: Sports; Author-Supplied Keyword: Vancouver Olympics; Author-Supplied Keyword: Whistleblower ; Company/Entity: PENNSYLVANIA Station (New York, N.Y.); Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.bushor.2013.02.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=87397457&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - AU - Drew Jr., W. E.1 T1 - Climate change: an encyclopedia of science and history. JO - Choice: Current Reviews for Academic Libraries JF - Choice: Current Reviews for Academic Libraries J1 - Choice: Current Reviews for Academic Libraries PY - 2013/05// Y1 - 2013/05// VL - 50 IS - 9 CP - 9 M3 - Book Review SP - 1601 EP - 1601 SN - 00094978 AB - The article reviews the book "Climate Change: An Encyclopedia of Science and History" edited by Brian C. Black with David M. Hassenzahl. KW - Nonfiction KW - Climatic changes KW - Black, Brian C. KW - Hassenzahl, David M. KW - Climate Change: An Encyclopedia of Science & History (Book) N1 - Accession Number: 87004473; Authors: Drew Jr., W. E. 1; Affiliations: 1: Air Force Research Laboratory; Subject: Climate Change: An Encyclopedia of Science & History (Book); Subject: Black, Brian C.; Subject: Hassenzahl, David M.; Subject: Climatic changes; Subject: Nonfiction; Number of Pages: 1/5p; Record Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=87004473&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - Bai, Jian AU - Shi, Shouyuan AU - Wilson, John P. AU - Nelson, Robert AU - Prather, Dennis W. T1 - Wideband, Electrically Small, Planar, Coupled Subwavelength Resonator Antenna With an Embedded Matching Network. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2013/05// Y1 - 2013/05// VL - 61 IS - 5 M3 - Article SP - 2388 EP - 2396 SN - 0018926X AB - A wideband, electrically small, planar, coupled D-ring subwavelength resonator antenna is presented. Two planar coupled D-ring resonators operating at even mode have been demonstrated experimentally to have a strong coupling to radiation. In this paper, we investigate a novel feeding method of driving the planar coupled D-rings to achieve a wide bandwidth. Dual-mode radiation is observed in the antenna. In one mode, the coupled D-ring driven by the inter-digital monopole acts as a major radiator resonating at a frequency of 1.7 GHz. In another mode, the driving monopole becomes a major radiator capable of resonating at a lower frequency of 1.2 GHz due to an embedded matching network comprised of the D-ring and a meandering line. As a result, the antenna can achieve an impedance bandwidth of 1 GHz–1.7 GHz. The antenna has a size, in terms of ka, of 0.49 to 0.75 over the bandwidth. The efficiency of the antenna is predicted to be very close to the upper bound given by the Chu limit. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BROADBAND communication systems -- Research KW - TELECOMMUNICATION systems KW - RESONATORS KW - ELECTROMAGNETISM KW - ANTENNAS (Electronics) N1 - Accession Number: 87462400; Source Information: May2013, Vol. 61 Issue 5, p2388; Subject Term: BROADBAND communication systems -- Research; Subject Term: TELECOMMUNICATION systems; Subject Term: RESONATORS; Subject Term: ELECTROMAGNETISM; Subject Term: ANTENNAS (Electronics); Subject Term: ; Number of Pages: 9p; ; Document Type: Article; L3 - 10.1109/TAP.2013.2244835 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=87462400&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Qiu, Qinru AU - Wu, Qing AU - Bishop, Morgan AU - Pino, Robinson E. AU - Linderman, Richard W. T1 - A Parallel Neuromorphic Text Recognition System and Its Implementation on a Heterogeneous High-Performance Computing Cluster. JO - IEEE Transactions on Computers JF - IEEE Transactions on Computers Y1 - 2013/05// VL - 62 IS - 5 M3 - Article SP - 886 EP - 899 SN - 00189340 AB - Given the recent progress in the evolution of high-performance computing (HPC) technologies, the research in computational intelligence has entered a new era. In this paper, we present an HPC-based context-aware intelligent text recognition system (ITRS) that serves as the physical layer of machine reading. A parallel computing architecture is adopted that incorporates the HPC technologies with advances in neuromorphic computing models. The algorithm learns from what has been read and, based on the obtained knowledge, it forms anticipations of the word and sentence level context. The information processing flow of the ITRS imitates the function of the neocortex system. It incorporates large number of simple pattern detection modules with advanced information association layer to achieve perception and recognition. Such architecture provides robust performance to images with large noise. The implemented ITRS software is able to process about 16 to 20 scanned pages per second on the 500 trillion floating point operations per second (TFLOPS) Air Force Research Laboratory (AFRL)/Information Directorate (RI) Condor HPC after performance optimization. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Computers is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH performance computing KW - COMPUTER architecture KW - ARTIFICIAL intelligence KW - COMPUTATIONAL intelligence KW - TEXT mining (Information retrieval) KW - NEOCORTEX KW - Biological neural networks KW - Brain models KW - Computational modeling KW - Computer architecture KW - distributed architecture KW - Heterogeneous (hybrid) systems KW - machine learning KW - natural language interfaces KW - Neurons KW - Optical character recognition software N1 - Accession Number: 86642408; Qiu, Qinru 1; Wu, Qing 2; Bishop, Morgan 2; Pino, Robinson E. 3; Linderman, Richard W. 3; Affiliations: 1: Syracuse University, Syracuse; 2: Air Force Research Laboratory, Rome; 3: Air Force Research Lab, Rome; Issue Info: May2013, Vol. 62 Issue 5, p886; Thesaurus Term: HIGH performance computing; Thesaurus Term: COMPUTER architecture; Thesaurus Term: ARTIFICIAL intelligence; Subject Term: COMPUTATIONAL intelligence; Subject Term: TEXT mining (Information retrieval); Subject Term: NEOCORTEX; Author-Supplied Keyword: Biological neural networks; Author-Supplied Keyword: Brain models; Author-Supplied Keyword: Computational modeling; Author-Supplied Keyword: Computer architecture; Author-Supplied Keyword: distributed architecture; Author-Supplied Keyword: Heterogeneous (hybrid) systems; Author-Supplied Keyword: machine learning; Author-Supplied Keyword: natural language interfaces; Author-Supplied Keyword: Neurons; Author-Supplied Keyword: Optical character recognition software; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TC.2012.50 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=86642408&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 104285249 T1 - Challenge of N95 Filtering Facepiece Respirators with Viable H1N1 Influenza Aerosols. AU - Harnish, Delbert A. AU - Heimbuch, Brian K. AU - Husband, Michael AU - Lumley, April E. AU - Kinney, Kimberly AU - Shaffer, Ronald E. AU - Wander, Joseph D. Y1 - 2013/05// N1 - Accession Number: 104285249. Language: English. Entry Date: 20130517. Revision Date: 20150818. Publication Type: Journal Article; research; tables/charts. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. Grant Information: This research was funded by the Biomedical Advanced Research and Development Authority, Office of the Assistant Secretary for Preparedness and Response, US Department of Health and Human Services, through an interagency agreement with the Air Force Research Laboratory (AFRL). This work was also partly funded by the National Institute for Occupational Safety and Health through an interagency agreement with the AFRL.. NLM UID: 8804099. KW - Ventilators, Mechanical -- Evaluation KW - Influenza, Pandemic (H1N1) 2009 -- Prevention and Control KW - Funding Source KW - Human KW - Descriptive Statistics KW - Two-Tailed Test KW - T-Tests KW - One-Way Analysis of Variance KW - Spearman's Rank Correlation Coefficient KW - P-Value SP - 494 EP - 499 JO - Infection Control & Hospital Epidemiology JF - Infection Control & Hospital Epidemiology JA - INFECT CONTROL HOSP EPIDEMIOL VL - 34 IS - 5 PB - Cambridge University Press AB - OBJECTIVE . Specification of appropriate personal protective equipment for respiratory protection against influenza is somewhat controversial. In a clinical environment, N95 filtering facepiece respirators (FFRs) are often recommended for respiratory protection against infectious aerosols. This study evaluates the ability of N95 FFRs to capture viable H1N1 influenza aerosols. METHODS. Five N95 FFR models were challenged with aerosolized viable H1N1 influenza and inert polystyrene latex particles at continuous flow rates of 85 and 170 liters per minute. Virus was assayed using Madin-Darby canine kidney cells to determine the median tissue culture infective dose (TCID50). Aerosols were generated using a Collison nebulizer containing H1N1 influenza virus at 1 x 108 TCID50/mL. To determine filtration efficiency, viable sampling was performed upstream and downstream of the FFR. RESULTS. N95 FFRs filtered 0.8-mm particles of both H1N1 influenza and inert origins with more than 95% efficiency. With the exception of 1 model, no statistically significant difference in filtration performance was observed between influenza and inert particles of similar size. Although statistically significant differences were observed for 2 models when comparing the 2 flow rates, the differences have no significance to protection. CONCLUSIONS. This study empirically demonstrates that a National Institute for Occupational Safety and Health-approved N95 FFR captures viable H1N1 influenza aerosols as well as or better than its N95 rating, suggesting that a properly fitted FFR reduces inhalation exposure to airborne influenza virus. This study also provides evidence that filtration efficiency is based primarily on particle size rather than the nature of the particle's origin. SN - 0899-823X AD - Applied Research Associates, Panama City, Florida AD - Office of the Secretary, Assistant Secretary for Preparedness and Response, Biomedical Advanced Research and Development Authority, US Department of Health and Human Services, Washington, DC AD - National Institute for Occupational Safety and Health, Pittsburgh, Pennsylvania AD - Air Force Research Laboratory, Tyndall Air Force Base, Florida U2 - PMID: 23571366. DO - 10.1086/670225 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104285249&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Sytsma, Michael Jon AU - Ukeiley, Lawrence T1 - Mean Loads from Wind-Tunnel Turbulence on Low-Aspect-Ratio Flat Plates. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2013/05//May/Jun2013 Y1 - 2013/05//May/Jun2013 VL - 50 IS - 3 M3 - Article SP - 863 EP - 870 SN - 00218669 AB - Turbulence grids are employed in an investigation to study the effects of freestream turbulence levels on aerodynamic loads for several low-aspect-ratio flat-plate wings. The objective of this research was to investigate how large levels of freestream turbulence affect a fixed wing in a low-speed turbulent flow. This paper specifically focuses on time-averaged mean load measurements of wings with three aspect ratios in highly turbulent and low-turbulence baseline flows. Relevant findings are that the presence of turbulence decreases the mean lift for an aspect ratio of 1 wing while increasing the mean lift for an aspect ratio of 2 and 4 wings. The stall angle of attack was increased for all aspect ratios investigated. Turbulence also modifies pitching moments to behave more smoothly than baseline cases. The standard deviations of the loads were found to be constant across the angle of attack, but the rolling moment was significantly increased with increasing aspect ratios. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIND tunnels KW - TURBULENCE KW - AERODYNAMICS KW - AERODYNAMIC load KW - LIVE loads N1 - Accession Number: 88181995; Source Information: May/Jun2013, Vol. 50 Issue 3, p863; Subject Term: WIND tunnels; Subject Term: TURBULENCE; Subject Term: AERODYNAMICS; Subject Term: AERODYNAMIC load; Subject Term: LIVE loads; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.2514/1.C032034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=88181995&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Hays, Michael R AU - Morton, Jeffrey AU - Dickinson, Benjamin AU - Chakravarty, Uttam K AU - Oates, William S T1 - Aerodynamic control of micro air vehicle wings using electroactive membranes. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2013/05// VL - 24 IS - 7 M3 - Article SP - 862 EP - 878 SN - 1045389X AB - Dielectric elastomer materials are ideal candidates for developing high-agility micro air vehicles due to their electric field–induced deformation. Consequently, the aero-structural response and control authority of the dielectric elastomer material, VHB 4910, are characterized on an elliptical membrane wing. An experimental membrane wing platform was constructed by stretching VHB 4910 over a rigid elliptical wing-frame. The low Reynolds number (chord Reynolds number < 106) and aerodynamics of the elliptical wing were characterized when different electrostatic fields were applied to the membrane. We observe an overall increase in lift with maximum gains of 20% at an applied voltage of 4.5 kV and demonstrate the ability to delay stall. The time-averaged aerodynamic surface pressure is also investigated by comparing sting balance data and membrane deformation measured using visual image correlation. The experimental results are compared to a nonlinear finite element membrane model to further understand the effects of aerodynamic load and electric fields on membrane displacements. Model predictions of surface pressure provide insight into how the electrostrictive constitutive relations influence the fluid–structure interactions of the membrane. This is validated by comparing lift predictions from the model with time-averaged wind tunnel lift measurements near stall. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES KW - MATHEMATICAL models KW - CONTROL surfaces KW - MICRO air vehicles KW - CONDUCTING polymers KW - MEMBRANES (Technology) KW - FLUID-structure interaction KW - aerodynamics KW - Dielectric elastomer KW - micro air vehicle N1 - Accession Number: 87108410; Hays, Michael R 1; Morton, Jeffrey 1; Dickinson, Benjamin 2; Chakravarty, Uttam K 3; Oates, William S 1; Affiliations: 1: Department of Mechanical Engineering, Florida Center for Advanced Aero Propulsion (FCAAP), Florida A & M and Florida State University, Tallahassee, FL, USA; 2: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL, USA; 3: Department of Mechanical Engineering, University of New Orleans, New Orleans, LA, USA; Issue Info: May2013, Vol. 24 Issue 7, p862; Thesaurus Term: AIRPLANES; Thesaurus Term: MATHEMATICAL models; Subject Term: CONTROL surfaces; Subject Term: MICRO air vehicles; Subject Term: CONDUCTING polymers; Subject Term: MEMBRANES (Technology); Subject Term: FLUID-structure interaction; Author-Supplied Keyword: aerodynamics; Author-Supplied Keyword: Dielectric elastomer; Author-Supplied Keyword: micro air vehicle; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 17p; Document Type: Article; Full Text Word Count: 8403 L3 - 10.1177/1045389X12470303 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=87108410&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Perlovsky, Leonid AU - Cabanac, Arnaud AU - Bonniot-Cabanac, Marie-Claude AU - Cabanac, Michel T1 - Mozart effect, cognitive dissonance, and the pleasure of music JO - Behavioural Brain Research JF - Behavioural Brain Research Y1 - 2013/05// VL - 244 M3 - Article SP - 9 EP - 14 SN - 01664328 AB - Abstract: We explore a possibility that the ‘Mozart effect’ points to a fundamental cognitive function of music. Would such an effect of music be due to the hedonicity, a fundamental dimension of mental experience? The present paper explores a recent hypothesis that music helps to tolerate cognitive dissonances and thus enabled accumulation of knowledge and human cultural evolution. We studied whether the influence of music is related to its hedonicity and whether pleasant or unpleasant music would influence scholarly test performance and cognitive dissonance. Specific hypotheses evaluated in this study are that during a test students experience contradictory cognitions that cause cognitive dissonances. If some music helps to tolerate cognitive dissonances, then first, this music should increase the duration during which participants can tolerate stressful conditions while evaluating test choices. Second, this should result in improved performance. These hypotheses are tentatively confirmed in the reported experiments as the agreeable music was correlated with longer duration of tests under stressful conditions and better performance above that under indifferent or unpleasant music. It follows that music likely performs a fundamental cognitive function explaining the origin and evolution of musical ability that have been considered a mystery. [Copyright &y& Elsevier] AB - Copyright of Behavioural Brain Research is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MUSIC therapy KW - MENTAL health KW - MUSIC psychology KW - COGNITIVE dissonance KW - PLEASURE KW - TASK performance KW - HYPOTHESIS KW - ‘Mozart effect’ KW - Cognitive dissonance KW - Music cognition KW - Music cognitive function KW - Pleasure N1 - Accession Number: 86419440; Perlovsky, Leonid 1,2; Email Address: lperl@rcn.com; Cabanac, Arnaud 3; Email Address: arnaud.cabanac@csdecou.qc.ca; Bonniot-Cabanac, Marie-Claude 4; Email Address: Marie-Claude.Bonniot@fmed.ulaval.ca; Cabanac, Michel 4; Email Address: Michel.Cabanac@fmed.ulaval.ca; Affiliations: 1 : Athinoula A. Martinos Center for Biomedical Imaging, Harvard University, Charlestown, MA, USA; 2 : Air Force Research Laboratory, Dayton, OH, USA; 3 : De Rochebelle School (C.S.D.D), Quebec, Canada; 4 : Faculty of Medicine, Laval University, Quebec, Canada; Source Info: May2013, Vol. 244, p9; Subject Term: MUSIC therapy; Subject Term: MENTAL health; Subject Term: MUSIC psychology; Subject Term: COGNITIVE dissonance; Subject Term: PLEASURE; Subject Term: TASK performance; Subject Term: HYPOTHESIS; Author-Supplied Keyword: ‘Mozart effect’; Author-Supplied Keyword: Cognitive dissonance; Author-Supplied Keyword: Music cognition; Author-Supplied Keyword: Music cognitive function; Author-Supplied Keyword: Pleasure; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.bbr.2013.01.036 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=86419440&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR ID - 2013-23802-001 AN - 2013-23802-001 AU - Bennett, Winston Jr. AU - Schreiber, Brian AU - Portrey, Antoinette M. AU - Bell, Herbert H. T1 - Challenges in transforming military training: Research and application of advanced simulation and training technologies and methods. T3 - Challenges in Transforming Military Training: Research and Application of Advanced Simulation and Training Technologies and Methods JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2013/05// VL - 25 IS - 3 SP - 173 EP - 176 CY - US PB - Educational Publishing Foundation SN - 0899-5605 SN - 1532-7876 SN - 1-4338-1621-0 AD - Bennett, Winston Jr., Wright Patterson AFB, 711 HPW/RHAS, 2620 Q Street (Bldg 20852), OH, US, 45433-7955 N1 - Accession Number: 2013-23802-001. Partial author list: First Author & Affiliation: Bennett, Winston Jr.; Air Force Research Laboratory, 711th Human Performance Wing, Human Effectiveness Directorate, Warfighter Readiness Research Division, Wright Patterson AFB, OH, US. Other Publishers: Lawrence Erlbaum; Taylor & Francis. Release Date: 20130708. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. ISBN: 1-4338-1621-0. Language: English. Major Descriptor: Military Training. Minor Descriptor: Technology. Classification: Military Psychology (3800). Population: Human (10). Page Count: 4. Issue Publication Date: May, 2013. AB - The major focus of this special issue is on empirical studies within the military context, or research that has direct potential application to the military simulation and training community. Since most of the papers in this special issue are empirical, they focus on specific research questions and issues. These focused questions serve as excellent examples of larger training and learning research topics/issues being addressed by agencies around the world today. Each of the papers in this special issue explores topics of relevance that need to be considered in transforming military training. Throughout the course of this special issue, we encourage the reader to ponder the topics presented in the individual papers and how those topics present unique challenges for transforming training in our military today. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - military training KW - technology KW - methods KW - 2013 KW - Military Training KW - Technology KW - 2013 DO - 10.1037/mil0000002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-23802-001&site=ehost-live&scope=site UR - winston.bennett@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-23802-002 AN - 2013-23802-002 AU - Chapman, Robert AU - Colegrove, Charles T1 - Transforming operational training in the Combat Air Forces. T3 - Challenges in Transforming Military Training: Research and Application of Advanced Simulation and Training Technologies and Methods JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2013/05// VL - 25 IS - 3 SP - 177 EP - 190 CY - US PB - Educational Publishing Foundation SN - 0899-5605 SN - 1532-7876 SN - 1-4338-1621-0 AD - Chapman, Robert, ACC/A5TN, Air Combat Command, Langley Air Force Base, VA, US, 23665 N1 - Accession Number: 2013-23802-002. Partial author list: First Author & Affiliation: Chapman, Robert; Alion Science and Technology, Air Combat Command, Langley Air Force Base, VA, US. Other Publishers: Lawrence Erlbaum; Taylor & Francis. Release Date: 20130708. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. ISBN: 1-4338-1621-0. Language: English. Major Descriptor: Air Force Personnel; Educational Program Accreditation; Flight Simulation; Military Training; Professional Competence. Classification: Military Psychology (3800). Population: Human (10). Location: US. References Available: Y. Page Count: 14. Issue Publication Date: May, 2013. Copyright Statement: American Psychological Association. 2013. AB - In 1997, the United States Air Force (USAF) Air Combat Command (ACC) embarked on a revolutionary path for operational readiness training of its combat crews. Initially designated as Distributed Mission Training (DMT), the program is currently called Combat Air Forces (CAF) Distributed Mission Operations (DMO). The CAF DMO program synthesizes a mission training and rehearsal environment by linking fighter, bomber, and command and control simulators into a common battlespace. In 2002, the Department of Defense (DoD) initiated a training transformation initiative; DMO became the USAF’s major component. This article discusses the training concept and technical integration challenges encountered, including competency-based training, security, technical standards, and technology development. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - accreditation KW - competency KW - flight training KW - simulators KW - operational training KW - Combat Air Forces KW - 2013 KW - Air Force Personnel KW - Educational Program Accreditation KW - Flight Simulation KW - Military Training KW - Professional Competence KW - 2013 DO - 10.1037/h0095980 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-23802-002&site=ehost-live&scope=site UR - Robert.Chapman@langley.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-23802-005 AN - 2013-23802-005 AU - Alliger, George M. AU - Beard, Rebecca AU - Bennett, Winston Jr. AU - Symons, Steven AU - Colegrove, Charles T1 - A psychometric examination of Mission Essential Competency (MEC) measures used in Air Force distributed mission operations training needs analysis. T3 - Challenges in Transforming Military Training: Research and Application of Advanced Simulation and Training Technologies and Methods JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2013/05// VL - 25 IS - 3 SP - 218 EP - 233 CY - US PB - Educational Publishing Foundation SN - 0899-5605 SN - 1532-7876 SN - 1-4338-1621-0 AD - Alliger, George M., The Group for Organizational Effectiveness, Inc., 727 Waldens Pond Road, Albany, NY, US, 12203 N1 - Accession Number: 2013-23802-005. Partial author list: First Author & Affiliation: Alliger, George M.; The Group for Organizational Effectiveness, Inc., Albany, NY, US. Other Publishers: Lawrence Erlbaum; Taylor & Francis. Release Date: 20130708. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. ISBN: 1-4338-1621-0. Language: English. Major Descriptor: Air Force Personnel; Measurement; Military Training; Professional Competence; Psychometrics. Classification: Occupational & Employment Testing (2228); Military Psychology (3800). Population: Human (10). Tests & Measures: Mission Essential Competency Survey [Appended]. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 16. Issue Publication Date: May, 2013. Copyright Statement: American Psychological Association. 2013. AB - The Mission Essential Competency (MEC) approach to work and training needs analysis has been the focus of a multiyear research project of the United States Air Force. This article was written with the specific goal of reviewing the psychometric characteristics of the various measures that are used in this process. Using extensive survey data from different target populations, we show that the MEC measures are reliable and perform in a way that valid measures would be expected to perform, such as demonstrating appropriate expert/novice differences, expected relationships between general competencies and MECs, and reasonable relationships between job tenure and knowledge/skill. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - competency assessment KW - competency-based assessment KW - competency-based training KW - mission essential competencies KW - proficiency-based training KW - United States Air Force KW - psychometric characteristics KW - 2013 KW - Air Force Personnel KW - Measurement KW - Military Training KW - Professional Competence KW - Psychometrics KW - 2013 DO - 10.1037/h0094964 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-23802-005&site=ehost-live&scope=site UR - george.alliger@groupoe.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-23802-009 AN - 2013-23802-009 AU - MacMillan, Jean AU - Entin, Eileen B. AU - Morley, Rebecca AU - Bennett, Winston Jr. T1 - Measuring team performance in complex and dynamic military environments: The SPOTLITE method. T3 - Challenges in Transforming Military Training: Research and Application of Advanced Simulation and Training Technologies and Methods JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2013/05// VL - 25 IS - 3 SP - 266 EP - 279 CY - US PB - Educational Publishing Foundation SN - 0899-5605 SN - 1532-7876 SN - 1-4338-1621-0 AD - MacMillan, Jean, Aptima, Inc., 12 Gill St., Suite 1400, Woburn, MA, US, 01801 N1 - Accession Number: 2013-23802-009. Partial author list: First Author & Affiliation: MacMillan, Jean; Aptima, Inc., Woburn, MA, US. Other Publishers: Lawrence Erlbaum; Taylor & Francis. Release Date: 20130708. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. ISBN: 1-4338-1621-0. Language: English. Major Descriptor: Job Performance; Measurement; Military Training; Simulation; Teams. Minor Descriptor: Feedback; Learning. Classification: Occupational & Employment Testing (2228); Military Psychology (3800). Population: Human (10). Tests & Measures: Scenario-based Performance Observation Tool for Learning In Team Environments. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 14. Issue Publication Date: May, 2013. Copyright Statement: American Psychological Association. 2013. AB - The Scenario-based Performance Observation Tool for Learning In Team Environments (SPOTLITE) provides a systematic method for developing team performance measurement instruments comprised of behaviorally anchored rating scales that are tied to observable behaviors that tap critical knowledge and skills and can be assessed at specific intervals during a training scenario. We developed a measurement instrument for four-person teams of F-16 pilots training for air-to-air combat in a high-fidelity simulation environment and implemented it in a handheld computer to support fast and accurate data entry as a team executes a scenario. An experiment demonstrated the sensitivity, reliability, and validity of the instrument. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - performance assessment KW - performance measurement KW - simulation-based training KW - team training KW - training feedback KW - Scenario-based Performance Observation Tool for Learning In Team Environments KW - team performance KW - military environments KW - 2013 KW - Job Performance KW - Measurement KW - Military Training KW - Simulation KW - Teams KW - Feedback KW - Learning KW - 2013 U1 - Sponsor: Air Force Research Laboratory Warfighter Training Research Division. Recipients: No recipient indicated DO - 10.1037/h0094968 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-23802-009&site=ehost-live&scope=site UR - macmillj@aptima.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-16555-008 AN - 2013-16555-008 AU - Veksler, Vladislav D. AU - Gray, Wayne D. AU - Schoelles, Michael J. T1 - Goal-proximity decision-making. JF - Cognitive Science JO - Cognitive Science JA - Cogn Sci Y1 - 2013/05//May-Jun, 2013 VL - 37 IS - 4 SP - 757 EP - 774 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0364-0213 SN - 1551-6709 AD - Veksler, Vladislav D., Air Force Research Laboratory, Wright-Patterson AFB, OH, US N1 - Accession Number: 2013-16555-008. PMID: 23551486 Partial author list: First Author & Affiliation: Veksler, Vladislav D.; Air Force Research Laboratory, Wright-Patterson AFB, OH, US. Other Publishers: Elsevier Science; Lawrence Erlbaum; Taylor & Francis. Release Date: 20130916. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Gray, Wayne D. Major Descriptor: Cognitive Processes; Decision Making; Goals; Learning; Reinforcement. Minor Descriptor: Associative Processes; Punishment; Rewards. Classification: Cognitive Processes (2340). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Mathematical Model; Quantitative Study; Scientific Simulation. References Available: Y. Page Count: 18. Issue Publication Date: May-Jun, 2013. Publication History: Accepted Date: Jun 7, 2012; Revised Date: May 5, 2012; First Submitted Date: Feb 15, 2012. Copyright Statement: All rights reserved. Cognitive Science Society, Inc. 2013. AB - Reinforcement learning (RL) models of decision-making cannot account for human decisions in the absence of prior reward or punishment. We propose a mechanism for choosing among available options based on goal-option association strengths, where association strengths between objects represent previously experienced object proximity. The proposed mechanism, Goal-Proximity Decision-making (GPD), is implemented within the ACT-R cognitive framework. GPD is found to be more efficient than RL in three maze-navigation simulations. GPD advantages over RL seem to grow as task difficulty is increased. An experiment is presented where participants are asked to make choices in the absence of prior reward. GPD captures human performance in this experiment better than RL. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - goal proximity KW - decision making KW - reinforcement learning KW - rewards KW - punishment KW - cognitive processes KW - 2013 KW - Cognitive Processes KW - Decision Making KW - Goals KW - Learning KW - Reinforcement KW - Associative Processes KW - Punishment KW - Rewards KW - 2013 U1 - Sponsor: Office of Naval Research. Grant: N000141010019. Recipients: Gray, Wayne D. U1 - Sponsor: Alexander von Humboldt Stiftung. Recipients: No recipient indicated U1 - Sponsor: Max Planck Institute for Human Development. Recipients: No recipient indicated DO - 10.1111/cogs.12034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-16555-008&site=ehost-live&scope=site UR - ORCID: 0000-0002-1704-7433 UR - UR - vdv718@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-03022-001 AN - 2013-03022-001 AU - Alarcon, Gene M. AU - Bowling, Nathan A. AU - Khazon, Steven T1 - Great expectations: A meta-analytic examination of optimism and hope. JF - Personality and Individual Differences JO - Personality and Individual Differences JA - Pers Individ Dif Y1 - 2013/05// VL - 54 IS - 7 SP - 821 EP - 827 CY - Netherlands PB - Elsevier Science SN - 0191-8869 AD - Alarcon, Gene M., Air Force Research Laboratory, Wright Patterson AFB, OH, US, 45433 N1 - Accession Number: 2013-03022-001. Partial author list: First Author & Affiliation: Alarcon, Gene M.; Air Force Research Laboratory, Wright Patterson AFB, OH, US. Release Date: 20130204. Correction Date: 20130812. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Expectations; Hope; Narratives; Optimism. Minor Descriptor: Personality Traits; Physical Comfort. Classification: Personality Traits & Processes (3120). Population: Human (10). Tests & Measures: Hope Scale DOI: 10.1037/t00088-000. Methodology: Meta Analysis. Supplemental Data: Other Internet. References Available: Y. Page Count: 7. Issue Publication Date: May, 2013. Publication History: First Posted Date: Jan 26, 2013; Accepted Date: Dec 10, 2012; Revised Date: Dec 5, 2012; First Submitted Date: Sep 5, 2012. Copyright Statement: All rights reserved. Elsevier Ltd. 2012. AB - Optimism and hope—two psychological constructs reflecting positive expectations about one’s future—have garnered considerable research attention and each has been the subject of several narrative reviews. In the current meta-analysis, we examined the optimism–hope relationship and we examined several potential correlates and consequences of optimism and hope. Our results suggest that optimism and hope are distinguishable from each other. Furthermore, both are related to several indices of psychological and physical well-being and both are empirically distinguishable from other personality traits, such as the Five Factor Model characteristics and trait affectivity. We conclude by discussing directions for future research on optimism and hope. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - optimism KW - hope KW - positive expectations KW - physical well being KW - personality traits KW - narratives KW - 2013 KW - Expectations KW - Hope KW - Narratives KW - Optimism KW - Personality Traits KW - Physical Comfort KW - 2013 DO - 10.1016/j.paid.2012.12.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-03022-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 109857059 T1 - Training intuitive decision making in a simulated real-world environment. AU - Patterson, Robert Earl AU - Pierce, Byron J AU - Boydstun, Alan S AU - Ramsey, Lisa M AU - Shannan, Jodi AU - Tripp, Lisa AU - Bell, Herb Y1 - 2013/04// N1 - Accession Number: 109857059. Language: English. Entry Date: 20140214. Revision Date: 20170228. Publication Type: journal article; research; randomized controlled trial. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. NLM UID: 0374660. KW - Decision Making KW - Learning KW - Memory, Short Term KW - Adult KW - Data Display KW - Human KW - Information Science KW - Task Performance and Analysis KW - Transfer (Psychology) KW - Young Adult SP - 333 EP - 345 JO - Human Factors JF - Human Factors JA - HUM FACTORS VL - 55 IS - 2 PB - Sage Publications Inc. AB - Objective: We investigated whether naturalistic, intuitive (pattern recognition-based) decision making can be developed via implicit statistical learning in a simulated real-world environment.Background: To our knowledge, no definitive studies have actually shown that implicit learning plays a causal role in the development of intuitive decision making when the latter is defined as pattern recognition of real-world, or simulated real-world, environmental situations.Method: The simulated environment was presented dynamically so as to induce a sense of simulated locomotion through the scene and over sequences of objects on the ground. During training, participants passively viewed the objects sequences; during test, participants made intuitive decisions about related or unrelated sequences.Results: Intuitive decision making can be developed via implicit learning. Articulatory suppression, which affects working memory, exerted a significant inhibitory effect on the training of intuitive decision making. Intuitive decision making trained in the simulated environment fully transferred to a flat display (but not vice versa).Conclusion: Intuitive decision making is developed by an implicit learning process that is engaged by the meaning inherent in naturalistic scenes.Application: Implicit learning can be used for training intuitive decision making. SN - 0018-7208 AD - Air Force Research Laboratory, RHA/711 HPW Wright-Patterson AFB, OH 45433, USA. Robert.Patterson@wpafb.af.mil U2 - PMID: 23691829. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109857059&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Kwon, Yangsoo AU - Narayanan, Ram M. AU - Rangaswamy, Muralidhar T1 - Multi-Target Detection using Total Correlation for Noise Radar Systems. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2013/04// VL - 49 IS - 2 M3 - Article SP - 1251 EP - 1262 SN - 00189251 AB - Target detection is one of the important functions of radar systems. In this paper, we present a detection method using total correlation (TC) based on information theory for noise radar systems which enables the detection of multiple targets at intermediate and low signal-to-noise ratio (SNR) regimes. The proposed method utilizes the largest eigenvalue of the sample covariance matrix to extract information from the transmitted signal replica, and outperforms the conventional TC detector when reflected signals have intermediate or low SNR values. Additionally, in order to avoid ambiguous target occurrence, we propose an adaptive threshold to guarantee the detection performance with the same receiving antenna elements for a given false alarm probability. The threshold is computed from the largest and smallest eigenvalue distributions based on random matrix theory. Simulations show that the proposed detection method can be used for a wide range of SNR environments, and the threshold provides definitive target detection. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIGNAL detection KW - ELECTRONIC systems KW - DETECTORS KW - RADARSAT satellites KW - SIGNAL-to-noise ratio N1 - Accession Number: 86779837; Kwon, Yangsoo 1; Narayanan, Ram M. 1; Rangaswamy, Muralidhar 2; Affiliations: 1: The Pennsylvania State University; 2: Air Force Research Laboratory; Issue Info: Apr2013, Vol. 49 Issue 2, p1251; Subject Term: SIGNAL detection; Subject Term: ELECTRONIC systems; Subject Term: DETECTORS; Subject Term: RADARSAT satellites; Subject Term: SIGNAL-to-noise ratio; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TAES.2013.6494411 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=86779837&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Horvath, Matthew S. AU - Gorham, Leroy A. AU - Rigling, Brian D. T1 - Scene Size Bounds for PFA Imaging with Postfiltering. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2013/04// VL - 49 IS - 2 M3 - Article SP - 1402 EP - 1406 SN - 00189251 AB - The polar format algorithm (PFA) for synthetic aperture radar (SAR) image formation utilizes a first-order Taylor approximation of the differential range to improve computational efficiency, leading to image distortion and defocus. Limiting scene size by bounding the second-order Taylor series terms can restrict the impact of these errors, or alternatively, one may correct for these errors through spatially-variant filtering in post processing. In this letter we analyze the increase in allowable scene size that is realized through such processing. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - ELECTRONIC systems KW - IMAGING systems KW - RADARSAT satellites KW - DETECTORS N1 - Accession Number: 86779853; Horvath, Matthew S. 1; Gorham, Leroy A. 2; Rigling, Brian D. 3; Affiliations: 1: MacAulay-Brown, Inc.; 2: Air Force Research Laboratory; 3: Wright State University; Issue Info: Apr2013, Vol. 49 Issue 2, p1402; Thesaurus Term: ALGORITHMS; Subject Term: ELECTRONIC systems; Subject Term: IMAGING systems; Subject Term: RADARSAT satellites; Subject Term: DETECTORS; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TAES.2013.6494427 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=86779853&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - De, Soumya AU - Gupta, Kapil AU - Stanley, R. Joe AU - Ghasr, Mohammad T. AU - Zoughi, Reza AU - Doering, Kenneth AU - Van Aken, David C. AU - Steffes, Gary AU - O'Keefe, Matt AU - Palmer, Donald D. T1 - A Comprehensive Multi-Modal NDE Data Fusion Approach for Failure Assessment in Aircraft Lap-Joint Mimics. JO - IEEE Transactions on Instrumentation & Measurement JF - IEEE Transactions on Instrumentation & Measurement J1 - IEEE Transactions on Instrumentation & Measurement PY - 2013/04// Y1 - 2013/04// VL - 62 IS - 4 M3 - Article SP - 814 EP - 827 SN - 00189456 AB - Multi-modal data fusion techniques are commonly used to enhance decision-making processes. In previous research, a comprehensive structural analysis process was developed for quantizing and evaluating characteristics of defects in aircraft lap-joint mimics using eddy current (EC) nondestructive evaluation (NDE) data collected for structural health monitoring. In this research, a comprehensive multi-modal structural analysis process is presented that includes intra- and inter-modal NDE data fusion based on EC, millimeter wave (MW), and ultrasonic (UT) data obtained from five lap-joint mimic test panels. The process includes defect detection, defect characterization, and finite-element modeling-based simulated fatigue loading for structural analysis. The multi-modal structural analysis process is evaluated using four test panels with corroded patches at different layers of the lap joints and one painted pristine panel used as a reference. The test panels are subjected to two rounds of mechanical loading, preceded by multi-modal NDE data obtained before each round. Different NDE modality combinations are examined for test panel modeling, including: 1) EC, 2) UT, 3) MW, 4) EC and UT, 5) EC and MW, and 6) EC, UT, and MW. Experiments are performed to compare the simulated fatigue loading, based on models determined from the different modality combinations, and the mechanical loading results to find susceptible-to-failure areas in the test panels. Experimental results showed that the EC and UT modality combination yielded a correct vulnerable (crack) location recognition rate of 98.8%, an improvement of 14.7% over any individual modality, demonstrating the potential for multi-modal data fusion for characterizing corrosion and defects. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Instrumentation & Measurement is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DECISION making KW - DATA fusion (Statistics) KW - MULTISENSOR data fusion KW - EDDY currents (Electric) KW - FINITE element method N1 - Accession Number: 86002205; Source Information: Apr2013, Vol. 62 Issue 4, p814; Subject Term: DECISION making; Subject Term: DATA fusion (Statistics); Subject Term: MULTISENSOR data fusion; Subject Term: EDDY currents (Electric); Subject Term: FINITE element method; Subject Term: ; Number of Pages: 14p; ; Document Type: Article; L3 - 10.1109/TIM.2013.2240931 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=86002205&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Franzi, Matthew A. AU - Gilgenbach, Ronald M. AU - Hoff, Brad W. AU - Chalenski, David A. AU - Simon, David AU - Lau, Y. Y. AU - Luginsland, John T1 - Recirculating-Planar-Magnetron Simulations and Experiment. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2013/04//Apr2013 Part 1 Y1 - 2013/04//Apr2013 Part 1 VL - 41 IS - 4 M3 - Article SP - 639 EP - 645 SN - 00933813 AB - Microwave oscillation has been measured for the first time in a 12-cavity axial-magnetic-field recirculating planar magnetron, designed to operate in \pi mode at 1 GHz. The device operates with a -300-kV pulsed cathode voltage and a 0.2-T axial magnetic field, and oscillates at transverse currents exceeding 1 kA when driven by an electron beam pulselength between 0.5 and 1 \mu\s. Microwave pulses were measured at frequencies between 0.97–1 GHz and achieved several hundred nanoseconds in length. Mode competition was observed between the \pi and 5 \pi/6 modes. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - MAGNETIC fields KW - ELECTRON beams KW - ELECTRIC currents KW - GIRDERS N1 - Accession Number: 86975457; Source Information: Apr2013 Part 1, Vol. 41 Issue 4, p639; Subject Term: MAGNETRONS; Subject Term: MAGNETIC fields; Subject Term: ELECTRON beams; Subject Term: ELECTRIC currents; Subject Term: GIRDERS; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TPS.2013.2242493 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=86975457&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kosai, Hiroyuki AU - Scofield, James AU - McNeal, Seana AU - Jordan, Brett AU - Ray, Biswajit T1 - Design and Performance Evaluation of a 200 °C Interleaved Boost Converter. JO - IEEE Transactions on Power Electronics JF - IEEE Transactions on Power Electronics J1 - IEEE Transactions on Power Electronics PY - 2013/04// Y1 - 2013/04// VL - 28 IS - 4 M3 - Article SP - 1691 EP - 1699 SN - 08858993 AB - Recent advances in silicon carbide (SiC) power semiconductor technology and resulting availability of SiC Schottky rectifiers and controlled devices (bipolar junction transistors, JFETs, and MOSFETs) make it possible to design and implement power converters capable of operating at 200 °C. The design, prototype development, operation, and testing of a 74 kHz, 2 kW, 100 V/270 V inversely coupled, interleaved, dc–dc boost converter over the 20–200 °C temperature range is presented in this paper. The advantages of coupled-inductor interleaved boost converters include increased efficiency, reduced size, reduced electromagnetic emission, faster transient response, and improved reliability. Optimization of a high temperature X-perm core-based coupled inductor architecture, in terms of ac flux balancing and dc flux cancellation is discussed. DC characterization of SiC power devices used in the design (Schottky rectifier and JFET) over the 20–200 °C temperature range is presented as well. The power stage of the converter, including the power semiconductor devices, coupled inductor, and X7R ceramic input and output filter capacitors, was placed inside a temperature controlled chamber for testing. JFET gate drive circuit, input power source, and output load were external to the environmental chamber. Converter testing and performance evaluation was accomplished over a 20–200 °C ambient temperature range. As expected, JFET conduction loss increased and converter efficiency decreased with increasing temperatures. The drop in converter efficiency was in the range of 2%–4% over the entire load (200 W to 2 kW) and temperature (20–200 °C) ranges evaluated. At 200 °C, output voltage ripple increased by ∼60% due to the rapid decline in X7R capacitance at the high-temperature extreme. The results obtained during this study suggest that the realization of 200 °C power converters is feasible through a judicious selection of power semiconductor devices, magnetic core materials, and capacitor dielectrics. As a result, high temperature, frequency, and power density converters are expected to be a reality in the near future. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Power Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERFORMANCE evaluation KW - SILICON carbide KW - POWER semiconductors KW - CASCADE converters KW - SCHOTTKY effect KW - ELECTRIC current rectifiers KW - ELECTRIC inductors N1 - Accession Number: 101265182; Source Information: Apr2013, Vol. 28 Issue 4, p1691; Subject Term: PERFORMANCE evaluation; Subject Term: SILICON carbide; Subject Term: POWER semiconductors; Subject Term: CASCADE converters; Subject Term: SCHOTTKY effect; Subject Term: ELECTRIC current rectifiers; Subject Term: ELECTRIC inductors; Subject Term: ; Number of Pages: 9p; ; Document Type: Article; L3 - 10.1109/TPEL.2012.2208124 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=101265182&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 104213911 T1 - Impact of operator experience on the accuracy of implant placement with stereolithographic surgical templates: An in vitro study. AU - Cushen, Sarra E. AU - Turkyilmaz, Ilser Y1 - 2013/04// N1 - Accession Number: 104213911. Language: English. Entry Date: 20130822. Revision Date: 20150711. Publication Type: Journal Article; equations & formulas; pictorial; research; tables/charts. Journal Subset: Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Dental Care. NLM UID: 0376364. KW - Dental Implantation -- Evaluation KW - Human KW - Multivariate Analysis of Variance KW - In Vitro Studies SP - 248 EP - 254 JO - Journal of Prosthetic Dentistry JF - Journal of Prosthetic Dentistry JA - J PROSTHET DENT VL - 109 IS - 4 CY - New York, New York PB - Elsevier Science AB - Statement of problem: To achieve functional and esthetic results, implants must be placed accurately. However, little information relating to the effect of operator experience on implant placement accuracy is available. Purpose: The objective of this investigation was to measure the accuracy of dental implant placement with a bone-supported stereolithographic surgical template created from a virtual implant plan and to determine the effect of operator experience on implant placement accuracy. Material and methods: Twenty photopolymer resin edentulous mandibles were scanned with cone beam computerized tomography (CBCT). Five implants were planned virtually for each mandible, and a stereolithographic surgical template was made. Four operators placed a total of 100 implants (25 per operator). Two of the operators were experienced in implant placement and 2 operators had limited prior implant placement experience. A CBCT scan of the postimplant placement mandibles was performed, and the images were superimposed on the preimplant placement images containing the virtual implant plans. The amount of angular, horizontal, and vertical deviation of the placed implants from the virtually planned implants at the apex and platform was calculated, and statistically significant differences were detected between the operator groups by using a multivariate analysis of variance (MANOVA) (α=.05). Results: For the experienced operators, the mean error of angular deviation was 2.60 ±1.25 degrees, of horizontal deviation at the apex 0.34 ±0.15 mm, of horizontal deviation at the platform 0.63 ±0.28 mm, of vertical deviation at the apex 0.59 ±0.12 mm, and of vertical deviation at the platform 0.16 ±0.11 mm. For the inexperienced group, the mean error of angular deviation was 3.96 ±1.64 degrees, of horizontal deviation at the apex 0.42 ±0.19 mm, of horizontal deviation at the platform 0.77 ±0.33 mm, of vertical deviation at the apex 0.62 ±0.13 mm, and of vertical deviation at the platform 0.15 ±0.11 mm. The MANOVA showed a statistically significant difference between the experienced and inexperienced groups for angular and horizontal error at the implant apex and platform (P<.05). Conclusions: The results of this in vitro investigation revealed that the experience level of the operator placing the implants contributes to the accuracy of implant placement, with more experienced operators placing more implants accurately. SN - 0022-3913 AD - Resident, United States Air Force, Wilford Hall Medical Center, Lackland AFB, San Antonio, Texas AD - Assistant Professor, Director, Dental School Implant Clinic, Department of Comprehensive Dentistry, The University of Texas Health Science Center, San Antonio, Texas U2 - PMID: 23566606. DO - 10.1016/S0022-3913(13)60053-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104213911&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Berrebi, Claude AU - Ostwald†, Jordan T1 - Exploiting the Chaos: Terrorist Target Choice Following Natural Disasters. JO - Southern Economic Journal JF - Southern Economic Journal Y1 - 2013/04// VL - 79 IS - 4 M3 - Article SP - 793 EP - 811 PB - John Wiley & Sons, Inc. SN - 00384038 AB - This article explores the differences between transnational and domestic terrorism, further differentiating by private versus government targets, to estimate the effect of exogenous catastrophic shocks on a country's level of domestic and transnational terrorism. The empirical analysis uses detailed data on terrorism, natural disasters, and other relevant controls for 176 countries from 1970-2007 to illuminate several key disparities in a postdisaster target choice of terrorists. The results indicate that natural disasters incite both transnational and domestic terrorism; however, evidence is found for dissimilar motivations between the two. While both types of terrorism increase after disasters, transnational attacks against the government increase immediately following the disaster, suggesting an impetus to exploit weakened "hard" targets during the chaos. Conversely, domestic terrorism against the government takes longer to manifest, suggesting a period of time for which the public recovers and assesses the government's response. [ABSTRACT FROM AUTHOR] AB - Copyright of Southern Economic Journal is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NATURAL disasters KW - EMPIRICAL research KW - TERRORISM KW - DOMESTIC terrorism KW - TERRORIST plots KW - SUBVERSIVE activities N1 - Accession Number: 87317194; Berrebi, Claude 1; Email Address: berrebi@rand.org; Ostwald†, Jordan 2; Email Address: jostwald@gmail.com; Affiliations: 1: Federmann School of Public Policy and Government, Hebrew University. Mount Scopus, Jerusalem 91905. Israel; 2: United States Air Force, 405 McKee Lane. Apt F14, San Angelo, TX 76904, USA; Issue Info: Apr2013, Vol. 79 Issue 4, p793; Thesaurus Term: NATURAL disasters; Thesaurus Term: EMPIRICAL research; Subject Term: TERRORISM; Subject Term: DOMESTIC terrorism; Subject Term: TERRORIST plots; Subject Term: SUBVERSIVE activities; Number of Pages: 19p; Document Type: Article; Full Text Word Count: 9092 L3 - 10.4284/0038-4038-2012.268 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=87317194&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 2013-15680-005 AN - 2013-15680-005 AU - Martin, Jeffery S. AU - Ghahramanlou-Holloway, Marjan AU - Englert, David R. AU - Bakalar, Jennifer L. AU - Olsen, Cara AU - Nademin, Elicia M. AU - Jobes, David A. AU - Branlund, Shannon T1 - Marital status, life stressor precipitants, and communications of distress and suicide intent in a sample of United States Air Force suicide decedents. JF - Archives of Suicide Research JO - Archives of Suicide Research JA - Arch Suicide Res Y1 - 2013/04// VL - 17 IS - 2 SP - 148 EP - 160 CY - United Kingdom PB - Taylor & Francis SN - 1381-1118 SN - 1543-6136 AD - Ghahramanlou-Holloway, Marjan, Department of Medical & Clinical Psychology, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Room B3050, Bethesda, MD, US, 20814-4799 N1 - Accession Number: 2013-15680-005. PMID: 23614487 Partial author list: First Author & Affiliation: Martin, Jeffery S.; Department of Medical and Clinical Psychology, Uniformed Services University of the Health Sciences, Bethesda, MD, US. Other Publishers: Springer. Release Date: 20130624. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Ghahramanlou-Holloway, Marjan. Major Descriptor: Distress; Marital Status; Stress; Suicide. Minor Descriptor: Air Force Personnel; Communication. Classification: Behavior Disorders & Antisocial Behavior (3230). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Suicide Death Investigation Template Measure. Methodology: Empirical Study; Longitudinal Study; Retrospective Study; Interview; Quantitative Study. References Available: Y. Page Count: 13. Issue Publication Date: Apr, 2013. Copyright Statement: International Academy for Suicide Research AB - Life stressor precipitants and communications of distress and suicide intent were examined among a sample of United States Air Force (USAF) married versus unmarried suicide decedents. A total of 100 death investigations conducted by the Office of Special Investigations on active duty USAF suicides occurring between 1996 and 2006 were retrospectively reviewed. Married decedents were twice as likely 1) to have documented interpersonal conflict 24 hours prior to suicide and 2) to have communicated suicide intent to peers or professionals. Themes of distress communication for all decedents were intrapersonal (perceived stress, depression, psychological pain) and interpersonal (thwarted belongingness, rejection, loneliness). Suicide prevention programs and policies are encouraged to adapt efforts to the unique needs of married and unmarried individuals. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - marital status KW - life stressor precipitants KW - communication KW - distress KW - suicide intent KW - Air Force personnel KW - 2013 KW - Distress KW - Marital Status KW - Stress KW - Suicide KW - Air Force Personnel KW - Communication KW - 2013 U1 - Sponsor: US Department of Defense, Uniformed Services University of the Health Sciences, US. Grant: USUHS R072ID. Recipients: Ghahramanlou-Holloway, Marjan DO - 10.1080/13811118.2013.776456 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-15680-005&site=ehost-live&scope=site UR - marjan.holloway@usuhs.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-34608-018 AN - 2012-34608-018 AU - Ortiz, Andres AU - Kingston, Derek AU - Langbort, Cédric T1 - Multi-UAV velocity and trajectory scheduling strategies for target classification by a single human operator. JF - Journal of Intelligent & Robotic Systems JO - Journal of Intelligent & Robotic Systems Y1 - 2013/04// VL - 70 IS - 1-4 SP - 255 EP - 274 CY - Germany PB - Springer SN - 0921-0296 SN - 1573-0409 AD - Ortiz, Andres, Department of Aerospace Engineering, University of Illinois Urbana-Champaign, Urbana, IL, US, 61801 N1 - Accession Number: 2012-34608-018. Partial author list: First Author & Affiliation: Ortiz, Andres; Department of Aerospace Engineering, University of Illinois, Urbana-Champaign, Urbana, IL, US. Release Date: 20130415. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft; Human Machine Systems; Velocity. Classification: Human Factors Engineering (4010). Population: Human (10). Methodology: Empirical Study; Mathematical Model; Quantitative Study; Scientific Simulation. References Available: Y. Page Count: 20. Issue Publication Date: Apr, 2013. Publication History: First Posted Date: Aug 8, 2012; Accepted Date: Jul 10, 2012; First Submitted Date: Jun 7, 2012. Copyright Statement: Springer Science+Business Media B.V. 2012. AB - This work addresses the problem of enabling a single human operator to individually inspect targets for a fixed amount of time in a reconnaissance mission. The task of the operator is to classify the targets as friends or foes in real time, as they appear in video feeds from multiple UAVs. In order to account for cognitive limitations, the human is modeled as a single processing unit that can only execute one task at a time. A task is defined as a target inside the field of view of a given UAV, that needs to be inspected. Under the assumptions of this model, a linear program (LP) formulation is used to optimally find each task’s arrival time and latency in the system such that the human operator can inspect each target individually for some time Δ t. Previous work by the authors investigated the idea of using UAV velocity modifications to meet the timing schedule specified by the LP solution. In this paper, the idea of UAV trajectory changes is introduced by modeling the UAVs as Dubins vehicles. Modifications to the bounds on the LP constraints are derived based on Dubins trajectories. The new bounds ensure that the LP solution returns a timing schedule achievable via maneuvers that combine velocity and trajectory changes to the UAVs’ flight plans. An on-line algorithm is developed that constructs and commands these velocity and trajectory changes in real time when conflicts arise. Correctness properties of this algorithm are analyzed and discussed for mission scenarios where the location of the targets is unknown and targets are discovered by the UAVs in real time. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - unmanned aircraft KW - velocity KW - trajectory KW - task scheduling strategies KW - linear programming KW - human machine interface KW - 2013 KW - Aircraft KW - Human Machine Systems KW - Velocity KW - 2013 DO - 10.1007/s10846-012-9701-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-34608-018&site=ehost-live&scope=site UR - langbort@illinois.edu UR - Derek.Kingston@wpafb.af.mil UR - aortizr2@illinois.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-09964-008 AN - 2013-09964-008 AU - Patterson, Robert Earl AU - Pierce, Byron J. AU - Boydstun, Alan S. AU - Ramsey, Lisa M. AU - Shannan, Jodi AU - Tripp, Lisa AU - Bell, Herb T1 - Training intuitive decision making in a simulated real-world environment. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2013/04// VL - 55 IS - 2 SP - 333 EP - 345 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Patterson, Robert Earl, Air Force Research Laboratory, Wright-Patterson AFB, RHA/711 HPW, Dayton, OH, US, 45433 N1 - Accession Number: 2013-09964-008. PMID: 23691829 Partial author list: First Author & Affiliation: Patterson, Robert Earl; Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20130506. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Decision Making; Environment; Intuition; Training; Pattern Recognition (Cognitive Process). Minor Descriptor: Implicit Learning. Classification: Cognitive Processes (2340); Engineering & Environmental Psychology (4000). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Experimental Replication; Quantitative Study. References Available: Y. Page Count: 13. Issue Publication Date: Apr, 2013. Publication History: Accepted Date: May 21, 2012; First Submitted Date: Dec 22, 2011. AB - Objective: We investigated whether naturalistic, intuitive (pattern recognition–based) decision making can be developed via implicit statistical learning in a simulated real-world environment. Background: To our knowledge, no definitive studies have actually shown that implicit learning plays a causal role in the development of intuitive decision making when the latter is defined as pattern recognition of real-world, or simulated real-world, environmental situations. Method: The simulated environment was presented dynamically so as to induce a sense of simulated locomotion through the scene and over sequences of objects on the ground. During training, participants passively viewed the objects sequences; during test, participants made intuitive decisions about related or unrelated sequences. Results: Intuitive decision making can be developed via implicit learning. Articulatory suppression, which affects working memory, exerted a significant inhibitory effect on the training of intuitive decision making. Intuitive decision making trained in the simulated environment fully transferred to a flat display (but not vice versa). Conclusion: Intuitive decision making is developed by an implicit learning process that is engaged by the meaning inherent in naturalistic scenes. Application: Implicit learning can be used for training intuitive decision making. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - training intuitive decision making KW - simulated real world environment KW - implicit learning KW - pattern recognition KW - 2013 KW - Decision Making KW - Environment KW - Intuition KW - Training KW - Pattern Recognition (Cognitive Process) KW - Implicit Learning KW - 2013 U1 - Sponsor: US Air Force, US. Grant: FA8650-05-D6502. Other Details: To Link Simulation and Training, L3 Communications. Recipients: No recipient indicated U1 - Sponsor: AFOSR. Grant: 11RH08COR. Recipients: No recipient indicated DO - 10.1177/0018720812454432 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-09964-008&site=ehost-live&scope=site UR - Robert.Patterson@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - MacIntosh, Victor H. AU - Tastad, Katie J. AU - Eick-Cost, Angelia A. T1 - Mid-season influenza vaccine effectiveness 2011–2012: A Department of Defense Global, Laboratory-based, Influenza Surveillance System case–control study estimate JO - Vaccine JF - Vaccine Y1 - 2013/03/25/ VL - 31 IS - 13 M3 - Article SP - 1651 EP - 1655 SN - 0264410X AB - Abstract: Mid-season influenza vaccine effectiveness (VE) was estimated using data from surveillance conducted by the Department of Defense Global, Laboratory-based, Influenza Surveillance Program at the United States Air Force School of Aerospace Medicine. Respiratory specimens from geographically diverse military members and dependents who sought medical care 2 October 2011–3 March 2012 were analyzed by viral culture and real-time reverse transcriptase-polymerase chain reaction; influenza viruses were typed and sequenced. Controls were influenza test-negative. Overall, vaccine type and subtype-specific VE were estimated using logistic regression. Adjusted VE (95% confidence interval) was: overall 77 (57–87)%; live attenuated vaccine (LAIV) 74 (48–87)%; trivalent inactivated vaccine (TIV) 75 (48–88)%. H3 component-specific VE was: overall 77 (52–89)%; LAIV 78 (47–91)%; TIV 74 (38–89)%; data were insufficient for separate H1 and B estimates. Both vaccine types showed moderate to high VE, indicating significant protection against circulating influenza strains. [Copyright &y& Elsevier] AB - Copyright of Vaccine is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VACCINATION KW - Influenza KW - Drugs -- Effectiveness KW - Health surveys KW - Military medicine KW - Medical geography KW - Reverse transcriptase polymerase chain reaction KW - Logistic regression analysis KW - Influenza KW - Military KW - United States KW - Vaccine effectiveness KW - United States. Dept. of Defense N1 - Accession Number: 86156709; MacIntosh, Victor H. 1; Email Address: Victor.MacIntosh@us.af.mil; Tastad, Katie J. 1,2; Email Address: Katie.Tastad@wpafb.af.mil; Eick-Cost, Angelia A. 2,3; Affiliations: 1: United States Air Force School of Aerospace Medicine, 2510 5th Street, Wright-Patterson Air Force Base, OH 45433, United States; 2: Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., 6720A Rockledge Drive, Suite 100, Bethesda, MD 20817, United States; 3: Armed Forces Health Surveillance Center, 503 Robert Grant Avenue, Silver Spring, MD 20910, United States; Issue Info: Mar2013, Vol. 31 Issue 13, p1651; Thesaurus Term: VACCINATION; Subject Term: Influenza; Subject Term: Drugs -- Effectiveness; Subject Term: Health surveys; Subject Term: Military medicine; Subject Term: Medical geography; Subject Term: Reverse transcriptase polymerase chain reaction; Subject Term: Logistic regression analysis; Author-Supplied Keyword: Influenza; Author-Supplied Keyword: Military; Author-Supplied Keyword: United States; Author-Supplied Keyword: Vaccine effectiveness ; Company/Entity: United States. Dept. of Defense; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.vaccine.2013.01.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=86156709&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Afrooz, A.R.M. Nabiul AU - Sivalapalan, Sean T. AU - Murphy, Catherine J. AU - Hussain, Saber M. AU - Schlager, John J. AU - Saleh, Navid B. T1 - Spheres vs. rods: The shape of gold nanoparticles influences aggregation and deposition behavior JO - Chemosphere JF - Chemosphere Y1 - 2013/03/22/ VL - 91 IS - 1 M3 - Article SP - 93 EP - 98 SN - 00456535 AB - Abstract: The influence of shape on nanomaterial aggregation and deposition was systematically studied with poly-acrylic acid (PAA) coated uniform-sized gold nanospheres (AuNSs) and nanorods (AuNRs). Time resolved dynamic light scattering was employed to study their aggregation kinetics in a wide range of mono- and di-valent electrolyte conditions. Results indicated that PAA coated AuNSs have higher aggregation propensity compared to anisotropic PAA coated AuNRs, as observed through critical coagulation concentration (CCC). The CCC values were estimated as 50mM NaCl and 1.8mM CaCl2 for AuNS, which showed substantial increase to 250mM NaCl and 7mM CaCl2 for anisotropic AuNRs. Though electrokinetic behavior showed similar surface potential for the spherical and rod-shaped materials, the geometric differences between the samples have likely resulted in unique conformation of the PAA coatings, leading to different magnitudes of steric hindrances and hence yielding the observed aggregation behavior. The deposition kinetics was monitored using the quartz crystal microbalance with dissipation technique. AuNRs showed relatively slower deposition compared to AuNSs for low electrolytes concentrations. With the increase in electrolyte concentration, the differences in deposition rates between spheres and rods diminished. The results from this study showed that the shape of nanomaterials can influence interfacial properties and result in unique aggregation and deposition behavior under typical aquatic conditions. [Copyright &y& Elsevier] AB - Copyright of Chemosphere is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Particle size distribution KW - Gold nanoparticles KW - Clustering of particles KW - Chemical vapor deposition KW - Polyacrylic acid KW - Molecular dynamics KW - Aggregation KW - Deposition KW - Gold nanorods KW - Gold nanospheres KW - Poly(acrylic acid) KW - Shape N1 - Accession Number: 85617179; Afrooz, A.R.M. Nabiul 1; Sivalapalan, Sean T. 2; Murphy, Catherine J. 2; Hussain, Saber M. 3; Schlager, John J. 4; Saleh, Navid B. 1; Email Address: salehn@engr.sc.edu; Affiliations: 1: Department of Civil and Environmental Engineering, University of South Carolina, Columbia, SC 29208, USA; 2: Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; 3: Human Effectiveness Directorate, 711 Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH 45431, USA; 4: Molecular Bioeffects Branch, 711 Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH 45431, USA; Issue Info: Mar2013, Vol. 91 Issue 1, p93; Thesaurus Term: Particle size distribution; Subject Term: Gold nanoparticles; Subject Term: Clustering of particles; Subject Term: Chemical vapor deposition; Subject Term: Polyacrylic acid; Subject Term: Molecular dynamics; Author-Supplied Keyword: Aggregation; Author-Supplied Keyword: Deposition; Author-Supplied Keyword: Gold nanorods; Author-Supplied Keyword: Gold nanospheres; Author-Supplied Keyword: Poly(acrylic acid); Author-Supplied Keyword: Shape; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.chemosphere.2012.11.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=85617179&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Kalesnik, Frank T1 - Cataclysm: General Hap Arnold and the Defeat of Japan. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2013/03//Mar/Apr2013 Y1 - 2013/03//Mar/Apr2013 VL - 27 IS - 2 M3 - Book Review SP - 169 EP - 171 PB - Superintendent of Documents SN - 1555385X AB - The article reviews the book "Cataclysm: General Hap Arnold and the Defeat of Japan" by Herman S. Wolk. KW - CATACLYSM: General Hap Arnold & the Defeat of Japan (Book) KW - WOLK, Herman S. KW - JAPANESE war stories KW - NONFICTION N1 - Accession Number: 87572361; Source Information: Mar/Apr2013, Vol. 27 Issue 2, p169; Subject Term: CATACLYSM: General Hap Arnold & the Defeat of Japan (Book); Subject Term: WOLK, Herman S.; Subject Term: JAPANESE war stories; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=87572361&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Do, Hyungrok AU - Carter, Campbell T1 - Hydrocarbon fuel concentration measurement in reacting flows using short-gated emission spectra of laser induced plasma JO - Combustion & Flame JF - Combustion & Flame Y1 - 2013/03// VL - 160 IS - 3 M3 - Article SP - 601 EP - 609 SN - 00102180 AB - Abstract: Laser Induced Breakdown Spectroscopy (LIBS) is used to measure hydrocarbon fuel concentration in reacting flows. Emission spectra of the plasma induced by a focused-laser beam (Nd:YAG laser at 532nm) are correlated with hydrocarbon fuel concentration in regions upstream (reactants) and downstream (combustion products) of a flame and adjacent to the combustion reaction zone. Nitrogen (568nm) and hydrogen (656nm) atomic emission lines are selected to establish a correlation between the line intensities and fuel concentration. These correlations are effective in a wide range of fuel mole fraction (7–90% methane/air and 5–93% ethylene/air mixtures) and independent of flow velocity. Nevertheless, the correlation depends on gas species in the plasma. Three individual correlations for premixed methane/air, ethylene/air and combustion product gases are established. For the application of the LIBS in high-speed flows, the emission spectrum is captured employing a 10-ns time gate approximately 25ns after initial emission of radiation (from the probe region). The 25-ns gate delay is chosen to avoid broadband thermal emission from the high-temperature plasma core and achieve high spectrum signal intensity with reasonable signal-to-noise ratio of the atomic emission lines. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Hydrocarbons KW - Combustion KW - Nitrogen KW - Hydrogen KW - Emission spectroscopy KW - Laser plasmas KW - Laser-induced breakdown spectroscopy KW - Signal-to-noise ratio KW - Emission Spectroscopy KW - Fuel concentration measurement KW - Laser-induced breakdown KW - Plasma Emission KW - Short-gated LIBS N1 - Accession Number: 85154593; Do, Hyungrok 1; Email Address: hdo3@nd.edu; Carter, Campbell 2; Affiliations: 1: Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, IN 46556-5684, United States; 2: Air Force Research Laboratory (AFRL), Wright-Patterson Air Force Base, OH 45433, United States; Issue Info: Mar2013, Vol. 160 Issue 3, p601; Thesaurus Term: Hydrocarbons; Thesaurus Term: Combustion; Thesaurus Term: Nitrogen; Thesaurus Term: Hydrogen; Subject Term: Emission spectroscopy; Subject Term: Laser plasmas; Subject Term: Laser-induced breakdown spectroscopy; Subject Term: Signal-to-noise ratio; Author-Supplied Keyword: Emission Spectroscopy; Author-Supplied Keyword: Fuel concentration measurement; Author-Supplied Keyword: Laser-induced breakdown; Author-Supplied Keyword: Plasma Emission; Author-Supplied Keyword: Short-gated LIBS; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.combustflame.2012.12.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=85154593&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - SÖBNEZ, TAYFUN AU - SWITZER, TOBIAS B. T1 - MATCHING WITH (BRANCH-OF-CHOICE) CONTRACTS AT THE UNITED STATES MILITARY ACADEMY. JO - Econometrica JF - Econometrica Y1 - 2013/03// VL - 81 IS - 2 M3 - Article SP - 451 EP - 488 SN - 00129682 AB - Branch selection is a key decision in a cadet's military career. Cadets at USMA can increase their branch priorities at a fraction of slots by extending their service agreement. This real-life matching problem fills an important gap in the market design literature, providing strong empirical legitimacy to a series of elegant theoretical works on matching with contracts. Although priorities fail a key substitutes condition, the agent-optimal stable mechanism is well defined, and in contrast to the current USMA mechanism it is fair, stable, strategy-proof, and respects improvements in cadet priorities. Adoption of this mechanism benefits cadets and the Army. This new application shows that the matching with contracts model is practically relevant beyond traditional domains that satisfy the substitutes condition. [ABSTRACT FROM AUTHOR] AB - Copyright of Econometrica is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VOCATIONAL guidance KW - OFFER & acceptance (Contracts) KW - LABOR contracts KW - EMPLOYEES -- Relocation KW - ARMED Forces KW - MILITARY cadets KW - Market design KW - matching with contracts KW - stability KW - strategy-proofness KW - UNITED States Military Academy N1 - Accession Number: 87317334; SÖBNEZ, TAYFUN 1; Email Address: sonmezt@bc.edu; SWITZER, TOBIAS B. 2; Email Address: tobias.switzer@gmail.com; Affiliations: 1: Department of Economics, Boston College, Chestnut Hill, MA 02467, U.S.A; 2: United States Air Force, 6th Special Operations Squadron, Hurlburt Field, FL 32544, U.S.A; Issue Info: Mar2013, Vol. 81 Issue 2, p451; Thesaurus Term: VOCATIONAL guidance; Thesaurus Term: OFFER & acceptance (Contracts); Thesaurus Term: LABOR contracts; Thesaurus Term: EMPLOYEES -- Relocation; Subject Term: ARMED Forces; Subject Term: MILITARY cadets; Author-Supplied Keyword: Market design; Author-Supplied Keyword: matching with contracts; Author-Supplied Keyword: stability; Author-Supplied Keyword: strategy-proofness ; Company/Entity: UNITED States Military Academy; Number of Pages: 38p; Document Type: Article L3 - 10.3982/ECTA10570 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=87317334&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Ye, Nong AU - Aranda, Billibaldo Martinez AU - Hurley, Patrick T1 - System impact characteristics of cyber services, security mechanisms, and attacks with implications in cyber system survivability. JO - Information Knowledge Systems Management JF - Information Knowledge Systems Management Y1 - 2013/03// VL - 12 IS - 1 M3 - Article SP - 75 EP - 95 PB - IOS Press SN - 13891995 AB - Three types of activities may run on computer and network systems at the same time: services, security mechanisms, and attacks. Computer and network systems should sustain legitimate cyber services even under attacks. In this study, system impacts of services, security mechanisms and attacks are investigated and used to develop strategies for system survivability. Experiments are conducted to collect system dynamics data under two services of voice communication and motion detection, two security mechanisms of data encryption and intrusion detection, and five cyber attacks. Statistical analyses are performed on the experimental data to identify system-wide impacts of services, security mechanisms and attacks on system activities, state and performance. The analytical results reveal the system impact characteristics of these services, security mechanisms, and attacks on IO and file operations and bytes, page and cache faults, memory usage, CPU usage, and network traffic. The competition for system resources by all the activities in the system manifests themselves predominantly in their competition for limited CPU time. This competition for limited CPU time can be used as a strategy to ensure system survivability by increasing the activity level of legitimate services to leave less CPU time for attacks and thus suppress the level and system impacts of attacks while sustaining CPU time for legitimate services. [ABSTRACT FROM AUTHOR] AB - Copyright of Information Knowledge Systems Management is the property of IOS Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CYBERTERRORISM KW - DATA encryption (Computer science) KW - COMPUTER networks KW - QUANTITATIVE research KW - INTERNET security KW - attacks KW - Computer and network services KW - security KW - system impacts KW - system survivability N1 - Accession Number: 90202818; Ye, Nong 1; Aranda, Billibaldo Martinez 1; Hurley, Patrick 2; Affiliations: 1: School of Computing, Informatics, Decision Systems Engineering, Arizona State University, Tempe, AZ, USA; 2: U.S. Air Force Research Laboratory/RIGA, Rome, NY, USA; Issue Info: 2013, Vol. 12 Issue 1, p75; Thesaurus Term: CYBERTERRORISM; Thesaurus Term: DATA encryption (Computer science); Thesaurus Term: COMPUTER networks; Thesaurus Term: QUANTITATIVE research; Subject Term: INTERNET security; Author-Supplied Keyword: attacks; Author-Supplied Keyword: Computer and network services; Author-Supplied Keyword: security; Author-Supplied Keyword: system impacts; Author-Supplied Keyword: system survivability; NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; Number of Pages: 21p; Document Type: Article L3 - 10.3233/IKS-130217 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=90202818&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Jelic, Renato AU - Sherer, Scott AU - Greendyke, Robert T1 - Simulation of Various Turrets at Subsonic and Transonic Flight Conditions Using OVERFLOW. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2013/03//Mar/Apr2013 Y1 - 2013/03//Mar/Apr2013 VL - 50 IS - 2 M3 - Article SP - 398 EP - 409 SN - 00218669 AB - In this work, the flowfields associated with two canonical turret geometries, a fully exposed hemisphere on a flat plate and a 50% submerged hemisphere on a flat plate, were simulated using the OVERFLOW 2 flow solver. Both turret geometries use a flat-window aperture with an aperture ratio (ratio of the aperture diameter to the turret diameter) of 0.295 and an elevation angle of 57 deg. The forward field of regard was the particular focus in this study, and both symmetric (azimuth angle of 0 deg) and asymmetric (azimuth of 45 deg) window orientations were examined. Two flight conditions were also studied: a subsonic case with M = 0.45 and ReD = 6.30 x 106 and a transonic case with M is 0.85 and ReD = 9.53 x 106. The flowfield was simulated using the delayed detached-eddy simulation capability of OVERFLOW in conjunction with thespatially fifth-order weighted essentially nonoscillatory scheme to capture the off-body vortical structures. The impact of the turret aerodynamics on the performance of the turrets for directed energy applications is inferred through consideration of the flow features, density and pressure fluctuations, and forces on the turrets. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIMULATION methods & models KW - TURRETS KW - TRANSONIC aerodynamics KW - FLUX-line lattice KW - OPTICAL apertures N1 - Accession Number: 87628086; Source Information: Mar/Apr2013, Vol. 50 Issue 2, p398; Subject Term: SIMULATION methods & models; Subject Term: TURRETS; Subject Term: TRANSONIC aerodynamics; Subject Term: FLUX-line lattice; Subject Term: OPTICAL apertures; Subject Term: ; Number of Pages: 12p; ; Document Type: Article; L3 - 10.2514/1.C031844 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=87628086&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ricciardi, Anthony P. AU - Patil, Mayuresh J. AU - Canfield, Robert A. AU - Lindsley, Ned T1 - Evaluation of Quasi-Static Gust Loads Certification Methods for High-Altitude Long-Endurance Aircraft. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2013/03//Mar/Apr2013 Y1 - 2013/03//Mar/Apr2013 VL - 50 IS - 2 M3 - Article SP - 457 EP - 468 SN - 00218669 AB - Aeroelastic gust loads analysis can be approached using quasi-static, transient, or continuous methodologies. Pratt method is a quasi-static approach that forms the basis for Federal Aviation Regulation Part 23 gust loads certification requirements. This work evaluates the usefulness of Pratt method for unconventional high-altitude long- endurance aircraft. The derivation of Pratt method is reviewed, and all assumptions are identified. Error of a key curve fit equation is quantified directly. A state-of-the-art nonlinear aeroelastic code was upgraded and used to facilitate quantification of application-dependent errors by comparing quasi-static results to results from nonlinear transient analysis. Application-dependent errors are presented in the context of a SensorCraft-inspired joined-wing model and a Helios-aircraft-inspired flying-wing model. Recommendations are made on the usability of Pratt method for aircraft similar to the two high-altitude long-endurance models. It is concluded that Pratt method is useful for preliminary design of the joined-wing model but inadequate for the analysis of the flying-wing model. Further recommendations are made regarding the subtleties in the implementation of Pratt method for unconventional configurations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUASISTATIC processes KW - AEROELASTICITY KW - UNITED States. Federal Aviation Administration KW - TAILLESS airplanes KW - TURBULENCE N1 - Accession Number: 87628091; Source Information: Mar/Apr2013, Vol. 50 Issue 2, p457; Subject Term: QUASISTATIC processes; Subject Term: AEROELASTICITY; Subject Term: UNITED States. Federal Aviation Administration; Subject Term: TAILLESS airplanes; Subject Term: TURBULENCE; Subject Term: ; Number of Pages: 12p; ; Document Type: Article; L3 - 10.2514/1.C031872 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=87628091&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2013-06180-001 AN - 2013-06180-001 AU - Patterson, Robert Earl AU - Fournier, Lisa R. AU - Williams, Logan AU - Amann, Ryan AU - Tripp, Lisa M. AU - Pierce, Byron J. T1 - System dynamics modeling of sensory-driven decision priming. JF - Journal of Cognitive Engineering and Decision Making JO - Journal of Cognitive Engineering and Decision Making JA - J Cogn Eng Decis Mak Y1 - 2013/03// VL - 7 IS - 1 SP - 3 EP - 25 CY - US PB - Sage Publications SN - 1555-3434 AD - Patterson, Robert Earl, Wright-Patterson AFB, 711 HPW/RHXM, 2215 First Street, Bldg 33, OH, US, 45433 N1 - Accession Number: 2013-06180-001. Partial author list: First Author & Affiliation: Patterson, Robert Earl; Anticipate and Influence Behavior Research Division, Air Force Research Laboratory, Wright-Patterson AFB, OH, US. Release Date: 20130610. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Decision Making; Human Machine Systems Design; Priming; Computational Modeling. Classification: Lifespace & Institutional Design (4030). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Quantitative Study; Scientific Simulation. References Available: Y. Page Count: 23. Issue Publication Date: Mar, 2013. Copyright Statement: Human Factors and Ergonomics Society. 2012. AB - The authors present an empirical investigation and a system dynamics model of human decision priming. Decision priming occurs when initial information creates the expectation that a given decision is appropriate, which speeds up or slows down decision making. A conjunction benefits-and-costs paradigm was used to collect the empirical data, whereas system dynamics techniques were used to create a computational model of decision priming. Decision priming occurred with simulated naturalistic stimuli (i.e., models of military tanks in a desert scene presented in perspective view), the results of which were modeled in a parallel-channels coactive architecture. Simulation revealed that the basic features of decision priming in humans could be simulated with this architecture. Decision priming likely occurs in naturalistic settings. Predictions derived from the model could provide useful information for the design of multimodal or multichannel displays. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - system dynamics modeling KW - sensory driven KW - decision priming KW - computational model KW - 2013 KW - Decision Making KW - Human Machine Systems Design KW - Priming KW - Computational Modeling KW - 2013 U1 - Sponsor: US Air Force, US. Grant: FA8650-05-D-6502. Other Details: Task Order 0037, to Link Simulation and Training, L-3 Communications. Recipients: No recipient indicated DO - 10.1177/1555343412445474 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-06180-001&site=ehost-live&scope=site UR - Robert.Patterson@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-07249-002 AN - 2013-07249-002 AU - Mckinley, R. Andrew AU - Tripp, Lloyd D. Jr. AU - Fullerton, Kathy L. AU - Goodyear, Chuck T1 - Sustained acceleration on perception of relative position and motion. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2013/03// VL - 84 IS - 3 SP - 184 EP - 189 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Mckinley, R. Andrew, 2510 Fifth St., Bldg. 840, Wright-Patterson AFB, OH, US, 45433 N1 - Accession Number: 2013-07249-002. PMID: 23513278 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Mckinley, R. Andrew; Air Force Research Laboratory, Applied Neuroscience Branch, Wright-Patterson AFB, OH, US. Release Date: 20140303. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Air Transportation; Aircraft Pilots; Spatial Perception. Minor Descriptor: Acceleration Effects; Motion Perception. Classification: Transportation (4090); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 6. Issue Publication Date: Mar, 2013. Copyright Statement: The Aerospace Medical Association, Alexandria, VA AB - Introduction: Air-to-air refueling, formation flying, and projectile countermeasures all rely on a pilot's ability to be aware of his position and motion relative to another object. Methods: Eight subjects participated in the study, all members of the sustained acceleration stress panel at Wright-Patterson AFB, OH. The task consisted of the subject performing a two-dimensional join up task between a KC-135 tanker and an F-16. The objective was to guide the nose of the F-16 to the posterior end of the boom extended from the tanker, and hold this position for 2 s. If the F-16 went past the tanker, or misaligned with the tanker, it would be recorded as an error. These tasks were performed during four Gz acceleration profiles starting from a baseline acceleration of 1.5 Gz. The plateaus were 3, 5, and 7 Gz. The final acceleration exposure was a simulated aerial combat maneuver (SACM). Results: One subject was an outlier and therefore omitted from analysis. The mean capture time and percent error data were recorded and compared separately. There was a significant difference in error percentage change from baseline among the Cz profiles, but not capture time. Mean errors were approximately 15% higher in the 7 G profile and 10% higher during the SACM. Discussion: This experiment suggests that the ability to accurately perceive the motion of objects relative to other objects is impeded at acceleration levels of 7 Gz or higher (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - sustained acceleration KW - relative position KW - relative motion KW - aircraft pilots KW - transportation KW - 2013 KW - Air Transportation KW - Aircraft Pilots KW - Spatial Perception KW - Acceleration Effects KW - Motion Perception KW - 2013 DO - 10.3357/ASEM.3369.2013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-07249-002&site=ehost-live&scope=site UR - andy.mckkinley@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-07828-002 AN - 2013-07828-002 AU - Cooke, Nancy J. AU - Gorman, Jamie C. AU - Myers, Christopher W. AU - Duran, Jasmine L. T1 - Interactive team cognition. JF - Cognitive Science JO - Cognitive Science JA - Cogn Sci Y1 - 2013/03// VL - 37 IS - 2 SP - 255 EP - 285 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0364-0213 SN - 1551-6709 AD - Cooke, Nancy J., Arizona State University Polytechnic, TEIM, Santa Catalina Hall, 7271 E. Sonoran Arroyo Mall, Mesa, AZ, US, 85212 N1 - Accession Number: 2013-07828-002. PMID: 23167661 Partial author list: First Author & Affiliation: Cooke, Nancy J.; Arizona State University, Tempe, AZ, US. Other Publishers: Elsevier Science; Lawrence Erlbaum; Taylor & Francis. Release Date: 20130909. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cognition; Group Performance; Teams; Theories. Minor Descriptor: Knowledge Level; Pragmatics. Classification: Group & Interpersonal Processes (3020). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Uninhabited Aerial Vehicle–Synthetic Task Environment Task. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 31. Issue Publication Date: Mar, 2013. Publication History: Accepted Date: Mar 14, 2012; Revised Date: Dec 12, 2011; First Submitted Date: Aug 7, 2010. Copyright Statement: All rights reserved. Cognitive Science Society, Inc. 2012. AB - Cognition in work teams has been predominantly understood and explained in terms of shared cognition with a focus on the similarity of static knowledge structures across individual team members. Inspired by the current zeitgeist in cognitive science, as well as by empirical data and pragmatic concerns, we offer an alternative theory of team cognition. Interactive Team Cognition (ITC) theory posits that (1) team cognition is an activity, not a property or a product; (2) team cognition should be measured and studied at the team level; and (3) team cognition is inextricably tied to context. There are implications of ITC for theory building, modeling, measurement, and applications that make teams more effective performers. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Interactive Team Cognition theory KW - knowledge structures KW - work teams KW - pragmatics KW - effective performance KW - cognitive sciences KW - 2013 KW - Cognition KW - Group Performance KW - Teams KW - Theories KW - Knowledge Level KW - Pragmatics KW - 2013 U1 - Sponsor: Air Force Office of Scientific Research. Recipients: No recipient indicated U1 - Sponsor: Air Force Research Laboratory. Recipients: No recipient indicated U1 - Sponsor: Office of Naval Research. Recipients: No recipient indicated DO - 10.1111/cogs.12009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-07828-002&site=ehost-live&scope=site UR - ncooke@asu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Nabiul Afrooz, A. R. M. AU - Khan, Iftheker A. AU - Hussain, Saber M. AU - Saleh, Navid B. T1 - Mechanistic Heteroaggregation of Gold Nanoparticles in a Wide Range of Solution Chemistry. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2013/02/19/ VL - 47 IS - 4 M3 - Article SP - 1853 EP - 1860 SN - 0013936X AB - Heteroaggregation behavior of gold nanospheres (AuNS) in presence of pluronic acid (PA) modified single-walled carbon nanotubes (PA-SWNTs) was systematically studied for a wide range of mono- and divalent (NaCl and CaCl2) electrolyte conditions. Homoaggregation rates of AuNS were also determined to delineate heteroaggregation mechanisms. Time resolved dynamic light scattering (DLS) was employed to monitor aggregation. The homoaggregation of AuNS showed classical Derjaguin-Landau-Verwey-Overbeek (DLVO) type behavior with defined reaction limited (RLCA) and diffusion limited (DLCA) aggregation regimes. PA-SWNTs homoaggregation on the one hand showed no response with electrolyte increase. AuNS heteroaggregation rates on the other hand, showed regime dependent response. At low electrolyte or RLCA regime, AuNS heteroaggregation showed significantly slower rates, compared to its homoaggregation behavior; whereas enhanced heteroaggregation was observed for DLCA regime. The key mechanisms of heteroaggregation of AuNS are identified as obstruction to collision at RLCA regime and facilitating enhanced attachment at DLCA regime manifested by the presence of PA-SWNTs. Presence of Suwannee River humic acid (SRHA) showed aggregation enhancement for both homo- and hetero-systems, in presence of divalent Ca2+ ions. Bridging between SRHA molecules is identified as the key mechanism for increased aggregation rate. The findings of this study are relevant particularly to coexistence of engineered nanomaterials. The strategy of using nonaggregating PA-SWNTs is a novel experimental strategy that can be adopted elsewhere to further the heteroaggregation studies for a wider set of particles and surface coatings. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Solution (Chemistry) KW - Clustering of particles KW - Gold nanoparticles KW - Single walled carbon nanotubes KW - Electrolyte solutions KW - Reaction mechanisms (Chemistry) N1 - Accession Number: 86236020; Nabiul Afrooz, A. R. M. 1; Khan, Iftheker A. 1; Hussain, Saber M. 2; Saleh, Navid B. 1; Email Address: salehn@engr.sc.edu; Affiliations: 1: Department of Civil and Environmental Engineering, University of South Carolina, Columbia, South Carolina 29208, United States; 2: Human Effectiveness Directorate, 711 Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, Ohio 45431, United States; Issue Info: 2/19/2013, Vol. 47 Issue 4, p1853; Thesaurus Term: RESEARCH; Thesaurus Term: Solution (Chemistry); Subject Term: Clustering of particles; Subject Term: Gold nanoparticles; Subject Term: Single walled carbon nanotubes; Subject Term: Electrolyte solutions; Subject Term: Reaction mechanisms (Chemistry); Number of Pages: 8p; Document Type: Article L3 - 10.1021/es3032709 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=86236020&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Allen, Casey AU - Valco, Daniel AU - Toulson, Elisa AU - Edwards, Tim AU - Lee, Tonghun T1 - Ignition behavior and surrogate modeling of JP-8 and of camelina and tallow hydrotreated renewable jet fuels at low temperatures JO - Combustion & Flame JF - Combustion & Flame Y1 - 2013/02// VL - 160 IS - 2 M3 - Article SP - 232 EP - 239 SN - 00102180 AB - Abstract: The autoignition characteristics of the conventional jet fuel, JP-8, and the alternative jet fuels, camelina and tallow hydrotreated renewable jet (HRJ) fuels, are investigated using a rapid compression machine and the direct test chamber charge preparation approach. Ignition delay measurements are made at low compressed temperatures (625K⩽ Tc ⩽730K), compressed pressures of pc =5, 10, and 20bar, and equivalence ratios of ϕ =0.25, 0.5 and 1.0 in air. The HRJ fuels ignite more readily than JP-8 for all tested conditions, consistent with derived cetane number data in the literature. The camelina and tallow HRJ fuels exhibit similar autoignition characteristics, but the two fuels can be distinguished under stoichiometric conditions. Kinetic modeling is conducted with a 2-component surrogate (10% n-dodecane/90% 2-methylundecane) and a single component surrogate (2-methylnonane) to evaluate the potential to predict ignition behavior of the HRJ fuels. Modeling results indicate that the surrogate fuels can only provide useful predictions at a limited set of conditions (pc =5bar and ϕ =1.0), and that the agreement of the model and experimental data improves with decreasing compressed pressure. Under most conditions, the 2-component surrogate provides better prediction of ignition behavior, but the single component surrogate is superior at low pressures near the negative temperature coefficient region. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUEL KW - Pressure KW - Mathematical models KW - Jet planes KW - Tallow KW - Airplanes -- Motors -- Ignition KW - Low temperatures KW - Stoichiometry KW - Temperature effect KW - Autoignition KW - Hydrotreated renewable jet fuels KW - JP-8 KW - Rapid compression machine N1 - Accession Number: 84574618; Allen, Casey 1; Valco, Daniel 1; Toulson, Elisa 1; Edwards, Tim 2; Lee, Tonghun 1; Email Address: tonghun@msu.edu; Affiliations: 1: Department of Mechanical Engineering, Michigan State University, East Lansing, MI 48824, USA; 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Issue Info: Feb2013, Vol. 160 Issue 2, p232; Thesaurus Term: FUEL; Thesaurus Term: Pressure; Thesaurus Term: Mathematical models; Subject Term: Jet planes; Subject Term: Tallow; Subject Term: Airplanes -- Motors -- Ignition; Subject Term: Low temperatures; Subject Term: Stoichiometry; Subject Term: Temperature effect; Author-Supplied Keyword: Autoignition; Author-Supplied Keyword: Hydrotreated renewable jet fuels; Author-Supplied Keyword: JP-8; Author-Supplied Keyword: Rapid compression machine; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 311613 Rendering and Meat Byproduct Processing; NAICS/Industry Codes: 311611 Animal (except Poultry) Slaughtering; NAICS/Industry Codes: 311614 Rendering and meat processing from carcasses; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.combustflame.2012.10.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=84574618&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Schmidt, Jacob AU - Kostka, Stanislav AU - Roy, Sukesh AU - Gord, James AU - Ganguly, Biswa T1 - kHz-rate particle-image velocimetry of induced instability in premixed propane/air flame by millisecond pulsed current–voltage JO - Combustion & Flame JF - Combustion & Flame Y1 - 2013/02// VL - 160 IS - 2 M3 - Article SP - 276 EP - 284 SN - 00102180 AB - Abstract: Particle-image velocimetry (PIV) measurements were performed at 6kHz repetition rate in a premixed propane/air flame to examine the effects caused by applied millisecond-wide pulsed voltage–current below self-sustained breakdown. We have demonstrated significant structural changes to a burner-stabilized downward-propagating atmospheric pressure propane/air flame with overall flow speeds near 2m/s with +3kV pulsed applied voltages over 30mm gaps. Phase-locked, 2kHz broadband emission measurements of flame structure were also collected to support the PIV velocity data. The combined high-speed PIV and flame emission measurements were both capable of capturing changes from a single applied voltage pulse rather than using a phase matching approach requiring a highly repeatable disturbance as done previously [1]. The measured reductions in flame height, increases in local flow speeds, generation of large velocity gradients, and rapid oscillations in flame front are suggestive of an induced turbulence in an otherwise laminar flame. Taylor microscale lengths were calculated from the kHz PIV data and structures comparable to the reaction zone thickness were shown to increase during the applied voltage pulse. The timescale under which the flame flow changes combined with the accompanying flame emission measurements suggest that flame fluidics are modified by ion drift current induced net body force in or near the cathode fall at the base of the flame. The reduction in overall flame height and increase in speed near the base of the flame is suggestive of a ‘virtual’ bluff-body present in the flow. These fluidic changes force the flame to transition from a laminar to a highly unstable, transitioning to turbulence regime. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Air KW - Atmospheric pressure KW - Particle image velocimetry KW - Propane flames KW - Current-voltage characteristics KW - Breakdown (Electricity) KW - Oscillations KW - Turbulence KW - Laminar combustion KW - Pulsed electric field N1 - Accession Number: 84574622; Schmidt, Jacob 1; Email Address: JSchmidt@SpectralEnergies.com; Kostka, Stanislav 1; Roy, Sukesh 1; Gord, James 2; Ganguly, Biswa 2; Affiliations: 1: Spectral Energies, LLC, 5100 Springfield Street, Dayton, OH 45431, United States; 2: Air Force Research Laboratory, WPAFB, OH 45433, United States; Issue Info: Feb2013, Vol. 160 Issue 2, p276; Thesaurus Term: Air; Thesaurus Term: Atmospheric pressure; Subject Term: Particle image velocimetry; Subject Term: Propane flames; Subject Term: Current-voltage characteristics; Subject Term: Breakdown (Electricity); Subject Term: Oscillations; Subject Term: Turbulence; Author-Supplied Keyword: Laminar combustion; Author-Supplied Keyword: Pulsed electric field; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.combustflame.2012.10.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=84574622&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Li, Xue AU - Hong, Steven AU - Chakravarthy, Vasu D. AU - Temple, Michael AU - Wu, Zhiqiang T1 - Intercarrier Interference Immune Single Carrier OFDM via Magnitude-Keyed Modulation for High Speed Aerial Vehicle Communication. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2013/02// VL - 61 IS - 2 M3 - Article SP - 658 EP - 668 SN - 00906778 AB - Orthogonal Frequency Division Multiplexing (OFDM) has been considered as a strong candidate for next generation wireless communication systems. Compared to traditional OFDM, Single Carrier OFDM (SC-OFDM) has demonstrated excellent bit error rate (BER) performance, as well as low peak to average power ratio (PAPR). Similar to other multi-carrier transmission technologies, SC-OFDM suffers significant performance degradation resulting from intercarrier interference (ICI) in high mobility environments. Existing techniques for OFDM can be directly adopted in SC-OFDM to improve performance, however, this improved performance comes at costs such as decreased throughput. In this paper, we analyze the effect of ICI on an SC-OFDM system and propose a novel modulation scheme. The proposed Magnitude-Keyed Modulation (MKM) modulation provides SC-OFDM system immunity to ICI and with an easy implementation it significantly outperforms OFDM, SC-OFDM and MC-CDMA systems with Phase Shift Keying (PSK) modulation and Quadrature Amplitude Modulation (QAM) in severe ICI environment. Analysis also illustrates the proposed SC-OFDM system with MKM modulation maintains low PAPR compared to traditional OFDM and SC-OFDM systems with PSK and QAM modulations. Simulation results for different modulation schemes in various ICI environments confirm the effectiveness of the proposed system. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Broadband communication systems KW - Spread spectrum communications KW - Data transmission systems KW - Wireless communication systems KW - Cell phone systems KW - Orthogonal frequency division multiplexing KW - Bit error rate KW - Estimation KW - Intercarrier interference KW - Interference KW - magnitude keyed modulation KW - Modulation KW - Multicarrier code division multiple access KW - OFDM KW - Receivers KW - single carrier OFDM N1 - Accession Number: 85988173; Li, Xue 1; Hong, Steven 2; Chakravarthy, Vasu D. 3; Temple, Michael 4; Wu, Zhiqiang 1; Affiliations: 1: the Department of Electrical Engineering, Wright State University, Dayton, OH, USA; 2: the Department of Electrical Engineering, Stanford University, Stanford, CA, USA; 3: the Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; 4: the Department of Electrical and Computer Engineering, Air Force Institute of Technology, Dayton, OH, USA; Issue Info: Feb2013, Vol. 61 Issue 2, p658; Thesaurus Term: Broadband communication systems; Thesaurus Term: Spread spectrum communications; Thesaurus Term: Data transmission systems; Thesaurus Term: Wireless communication systems; Thesaurus Term: Cell phone systems; Subject Term: Orthogonal frequency division multiplexing; Subject Term: Bit error rate; Author-Supplied Keyword: Estimation; Author-Supplied Keyword: Intercarrier interference; Author-Supplied Keyword: Interference; Author-Supplied Keyword: magnitude keyed modulation; Author-Supplied Keyword: Modulation; Author-Supplied Keyword: Multicarrier code division multiple access; Author-Supplied Keyword: OFDM; Author-Supplied Keyword: Receivers; Author-Supplied Keyword: single carrier OFDM; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 11p; Document Type: Article L3 - 10.1109/TCOMM.2012.122112.110214 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=85988173&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Andreev, Andrey D. AU - Hendricks, Kyle J. T1 - Multicavity Magnetron With the “Rodded” Quasi-Metamaterial Cathode. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2013/02// Y1 - 2013/02// VL - 41 IS - 2 M3 - Article SP - 400 EP - 407 SN - 00933813 AB - We report on the use of the “rodded” or the longitudinally oriented metal-thin-wire structure as the explosive-emission cathode in high-power multicavity magnetrons. The rodded structure is transparent to the time-varying induced electric field E1 oscillating orthogonally to the individual rods or wires of the structure. The rods (wires) are longitudinally oriented, i.e., along the magnetron axis and parallel to the external dc axial magnetic field H0. The mode pattern established within the magnetron resonant cavity corresponds to one of the TE-like cavity modes of the magnetron operation. This allows defining the rodded structure as the quasi-metamaterial (i.e., not-entirely-metamaterial) structure. Particle-in-cell simulations of the U.S. Air Force Research Laboratory's six-cavity (AFRL-A6) L-band magnetron demonstrate that the rodded quasi-metamaterial cathode allows the magnetron to much more faster select the desired 2 \pi/3 magnetron operating mode within the broader range of the input operating parameters (from 130 to 200 kV at 0.15 T), as compared with the same magnetron working with the traditional smooth cylindrical cathode (from 140 to 160 kV at 0.15 T). [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS -- Research KW - CATHODES -- Research KW - COMPUTER simulation KW - ELECTRIC fields -- Research KW - PLASMA (Ionized gases) -- Research N1 - Accession Number: 85358513; Source Information: Feb2013, Vol. 41 Issue 2, p400; Subject Term: MAGNETRONS -- Research; Subject Term: CATHODES -- Research; Subject Term: COMPUTER simulation; Subject Term: ELECTRIC fields -- Research; Subject Term: PLASMA (Ionized gases) -- Research; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.1109/TPS.2013.2238558 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=85358513&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Gee, Kent L. AU - Neilsen, Tracianne B. AU - Downing, J. Micah AU - James, Michael M. AU - McKinley, Richard L. AU - McKinley, Robert C. AU - Wall, Alan T. T1 - Near-field shock formation in noise propagation from a high-power jet aircraft. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2013/02// VL - 133 IS - 2 M3 - Article SP - EL88 EP - EL93 SN - 00014966 AB - Noise measurements near the F-35A Joint Strike Fighter at military power are analyzed via spatial maps of overall and band pressure levels and skewness. Relative constancy of the pressure waveform skewness reveals that waveform asymmetry, characteristic of supersonic jets, is a source phenomenon originating farther upstream than the maximum overall level. Conversely, growth of the skewness of the time derivative with distance indicates that acoustic shocks largely form through the course of near-field propagation and are not generated explicitly by a source mechanism. These results potentially counter previous arguments that jet 'crackle' is a source phenomenon. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - F-35 (Military aircraft) KW - JET fighter planes KW - SKEWNESS (Probability theory) KW - WAVE analysis KW - NEAR-fields N1 - Accession Number: 85189536; Gee, Kent L. 1; Neilsen, Tracianne B. 1; Downing, J. Micah 2; James, Michael M. 2; McKinley, Richard L. 3; McKinley, Robert C. 3; Wall, Alan T. 4; Affiliations: 1 : Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602 kentgee@byu.edu, tbn@byu.edu; 2 : Blue Ridge Research and Consulting, LLC, Asheville, North Carolina 28801 micah.downing@blueridgeresearch.com, michael.james@blueridgeresearch.com; 3 : Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio, 45433 richard.mckinley@wpafb.af.mil, robert.mckinley@wpafb.af.mil; 4 : Department of Physics and Astronomy, Brigham Young University, Provo, Utah, 84602 alantwall@gmail.com; Source Info: Feb2013, Vol. 133 Issue 2, pEL88; Subject Term: F-35 (Military aircraft); Subject Term: JET fighter planes; Subject Term: SKEWNESS (Probability theory); Subject Term: WAVE analysis; Subject Term: NEAR-fields; Number of Pages: 6p; Document Type: Article L3 - 10.1121/1.4773225 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=85189536&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR AU - Hassan, Ez AU - Boles, John AU - Aono, Hikaru AU - Davis, Douglas AU - Shyy, Wei T1 - Supersonic jet and crossflow interaction: Computational modeling JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences J1 - Progress in Aerospace Sciences PY - 2013/02// Y1 - 2013/02// VL - 57 M3 - Article SP - 1 EP - 24 SN - 03760421 AB - Abstract: The supersonic jet-in-crossflow problem which involves shocks, turbulent mixing, and large-scale vortical structures, requires special treatment for turbulence to obtain accurate solutions. Different turbulence modeling techniques are reviewed and compared in terms of their performance in predicting results consistent with the experimental data. Reynolds-averaged Navier–Stokes (RANS) models are limited in prediction of fuel structure due to their inability to accurately capture unsteadiness in the flow. Large eddy simulation (LES) is not yet practical due to prohibitively large grid requirement near the wall. Hybrid RANS/LES can offer reasonable compromise between accuracy and efficiency. The hybrid models are based on various approaches such as explicit blending of RANS and LES, detached eddy simulation (DES), and filter-based multi-scale models. In particular, they can be used to evaluate the turbulent Schmidt number modeling techniques used in jet-in-crossflow simulations. Specifically, an adaptive approach can be devised by utilizing the information obtained from the resolved field to help assign the value of turbulent Schmidt number in the sub-filter field. The adaptive approach combined with the multi-scale model improves the results especially when highly refined grids are needed to resolve small structures involved in the mixing process. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERSONIC planes KW - JET planes KW - COMPUTER simulation KW - CROSS-flow (Aerodynamics) KW - TURBULENCE KW - MULTISCALE modeling N1 - Accession Number: 86393755; Source Information: Feb2013, Vol. 57, p1; Subject Term: SUPERSONIC planes; Subject Term: JET planes; Subject Term: COMPUTER simulation; Subject Term: CROSS-flow (Aerodynamics); Subject Term: TURBULENCE; Subject Term: MULTISCALE modeling; Subject Term: ; Number of Pages: 24p; ; Document Type: Article; L3 - 10.1016/j.paerosci.2012.06.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=86393755&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - AU - Farino, Jether C.1 AU - Joshi, Kaustubh G.2 T1 - Psychiatric Advance Directives: What Psychiatrists Need to Know Now. JO - Psychiatric Times JF - Psychiatric Times J1 - Psychiatric Times PY - 2013/02// Y1 - 2013/02// VL - 30 IS - 2 CP - 2 M3 - Article SP - 28 EP - 30 SN - 08932905 AB - The article focuses on the application of psychiatric advance directives (PADs). It states that PADs focuses on self-determination of patient regarding medical and psychiatric care. It further informs that PADs increase autonomy in a person with mental illness and decrease coercion and further discusses the elements, types, and clinical implications of PADs. KW - Advance directives (Medical care) -- Law & legislation KW - Patients -- Legal status, laws, etc. KW - Psychiatrists KW - Psychiatry KW - World Wide Web KW - Advance directives (Medical care) KW - Continuing education units KW - United States N1 - Accession Number: 85635561; Authors: Farino, Jether C. 1; Joshi, Kaustubh G. 2; Affiliations: 1: General Psychiatry Resident, United States Air Force, Wilford Hall Medical Center, University of Texas Health Science Center, San Antonio; 2: Adjunct Associate Professor, University of Texas Health Science Center, San Antonio; Subject: Advance directives (Medical care) -- Law & legislation; Subject: Patients -- Legal status, laws, etc.; Subject: Psychiatrists; Subject: Psychiatry; Subject: World Wide Web; Subject: Advance directives (Medical care); Subject: Continuing education units; Subject: United States; Number of Pages: 3p; Record Type: Article; Full Text Word Count: 2749 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=asu&AN=85635561&site=ehost-live&scope=site DP - EBSCOhost DB - asu ER - TY - JOUR ID - 107983399 T1 - Psychiatric Advance Directives: What Psychiatrists Need to Know Now. AU - Farino, Jether C. AU - Joshi, Kaustubh G. Y1 - 2013/02// N1 - Accession Number: 107983399. Language: English. Entry Date: 20130221. Revision Date: 20150712. Publication Type: Journal Article; CEU; exam questions. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. NLM UID: 9014543. KW - Patient Self Determination Act KW - Advance Directives -- Administration KW - Psychiatry KW - Psychiatrists KW - Advance Directives -- Ethical Issues KW - Advance Directives -- Legislation and Jurisprudence -- United States KW - United States KW - Education, Continuing (Credit) KW - World Wide Web SP - 28 EP - 30 JO - Psychiatric Times JF - Psychiatric Times JA - PSYCHIATR TIMES VL - 30 IS - 2 CY - Norwalk, Connecticut PB - UBM Medica SN - 0893-2905 AD - General Psychiatry Resident, United States Air Force, Wilford Hall Medical Center, University of Texas Health Science Center, San Antonio AD - Adjunct Associate Professor, University of Texas Health Science Center, San Antonio UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107983399&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Traits of Successful Strength and Conditioning Coaches. AU - Greener, Trent AU - Petersen, Drew AU - Pinske, Kim JO - Strength & Conditioning Journal (Lippincott Williams & Wilkins) JF - Strength & Conditioning Journal (Lippincott Williams & Wilkins) Y1 - 2013/02// VL - 35 IS - 1 SP - 90 EP - 93 SN - 15241602 N1 - Accession Number: 85709356; Author: Greener, Trent: 1 Author: Petersen, Drew: 2 Author: Pinske, Kim: 3 ; Author Affiliation: 1 Athletic Department, University of Wyoming, Laramie, Wyoming: 2 Athletic Department, Humboldt State University, Arcata, California: 3 Athletic Department, United States Air Force Academy, Colorado Springs, Colorado; No. of Pages: 4; Language: English; Publication Type: Article; Update Code: 20130302 N2 - The article focuses on the traits of effective strength and conditioning coaches. Trent Greener from the University of Wyoming says that coaches must be prepared to ignore traditional job descriptions and must demonstrate great energy, passion, and enthusiasm for the job. He also expects coaches to exhibit a professional attitude and demeanor. Andrew Petersen of Humboldt State University believes that great coaches possess a tireless work ethic and a sense of humility. KW - *COACHES (Athletics) KW - ATTITUDES toward work KW - WORK ethic KW - PROFESSIONALISM UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=85709356&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 2012-12948-001 AN - 2012-12948-001 AU - Alarcon, Gene M. AU - Edwards, Jean M. T1 - Ability and motivation: Assessing individual factors that contribute to university retention. JF - Journal of Educational Psychology JO - Journal of Educational Psychology JA - J Educ Psychol Y1 - 2013/02// VL - 105 IS - 1 SP - 129 EP - 137 CY - US PB - American Psychological Association SN - 0022-0663 SN - 1939-2176 AD - Alarcon, Gene M., Air Force Research Laboratory, Wright-Patterson Air Force Base, 2215 First St., Bldg. 33, Wright- Patterson AFB, OH, US, 45433 N1 - Accession Number: 2012-12948-001. Partial author list: First Author & Affiliation: Alarcon, Gene M.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Other Publishers: Warwick & York. Release Date: 20120521. Correction Date: 20130225. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Ability; Motivation; Personality; Retention. Minor Descriptor: College Students; Colleges; Individual Differences. Classification: Classroom Dynamics & Student Adjustment & Attitudes (3560). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Big Five Inventory; Positive and Negative Affect Schedule DOI: 10.1037/t03592-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 9. Issue Publication Date: Feb, 2013. Publication History: First Posted Date: May 21, 2012; Accepted Date: Apr 10, 2012; Revised Date: Apr 9, 2012; First Submitted Date: Jan 24, 2011. Copyright Statement: American Psychological Association. 2012. AB - The current study explored individual differences in ability and motivation factors of retention in first-year college students. We used discrete-time survival mixture analysis to model university retention. Parents' education, gender, American College Test (ACT) scores, conscientiousness, and trait affectivity were explored as predictors of retention. Results indicate gender, ACT scores, and conscientiousness are significant predictors of retention, but parents' education level was not a significant predictor. Positive affectivity and negative affectivity also were significant predictors of university retention when added to the model. Interestingly, once affectivity was added to the model, conscientiousness was no longer a significant predictor, indicating conscientiousness may be an amalgamation of motivation and ability. Implications for research and theory are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - ability KW - affectivity KW - motivation KW - personality KW - retention KW - university students KW - individual differences KW - 2013 KW - Ability KW - Motivation KW - Personality KW - Retention KW - College Students KW - Colleges KW - Individual Differences KW - 2013 DO - 10.1037/a0028496 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-12948-001&site=ehost-live&scope=site UR - gene.alarcon@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-06068-001 AN - 2013-06068-001 AU - Parco, James E. AU - Levy, David A. T1 - The rise and fall of DADT. JF - Journal of Homosexuality JO - Journal of Homosexuality JA - J Homosex Y1 - 2013/02// VL - 60 IS - 2-3 SP - 147 EP - 151 CY - United Kingdom PB - Taylor & Francis SN - 0091-8369 SN - 1540-3602 AD - Parco, James E., 14 E. Cache La Poudre St., Colorado Springs, CO, US, 80903 N1 - Accession Number: 2013-06068-001. PMID: 23414266 Partial author list: First Author & Affiliation: Parco, James E.; Department of Economics and Business, Colorado College, Colorado Springs, CO, US. Other Publishers: Haworth Press. Release Date: 20130415. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Editorial. Language: English. Major Descriptor: Military Veterans. Minor Descriptor: Government Policy Making; Homosexuality; Lesbianism. Classification: Military Psychology (3800). Population: Human (10). Page Count: 5. Issue Publication Date: Feb, 2013. AB - This article is a collection of articles for the Journal of Homosexuality provides an overview of creating a definitive collection of leading thought on homosexuality in the United States military in much the same way one approached the previous volume. This issue, one have brought together leading advocates, scholars, and experts analyzing the history, context, issues, and challenges that came to define government policies toward gay and lesbian service members during the latter half of the twentieth century up through early post-Don’t Ask, Don’t Tell (DADT) repeal. This issue examine the policy evolution of homosexuality in the military from multiple perspectives. Although she views repeal as a civil rights triumph, she remains critical of the process that manifested. To Hillman, repeal of DADT was inherently a civilian policy decision, and yet she notes the unprecedented deference given to the military establishment by the nation’s civilian authorities. This issue examines some of the most salient organizational implications of homosexuality and military service. Here, we include a study of our own. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - homosexuality KW - government policies KW - military service KW - lesbians KW - 2013 KW - Military Veterans KW - Government Policy Making KW - Homosexuality KW - Lesbianism KW - 2013 DO - 10.1080/00918369.2013.744663 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-06068-001&site=ehost-live&scope=site UR - jim.parco@coloradocollege.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-06068-012 AN - 2013-06068-012 AU - Parco, James E. AU - Levy, David A. T1 - Policy and paradox: Grounded theory at the moment of DADT repeal. JF - Journal of Homosexuality JO - Journal of Homosexuality JA - J Homosex Y1 - 2013/02// VL - 60 IS - 2-3 SP - 356 EP - 380 CY - United Kingdom PB - Taylor & Francis SN - 0091-8369 SN - 1540-3602 AD - Parco, James E., 14 E. Cache La Poudre St., Colorado Springs, CO, US, 80903 N1 - Accession Number: 2013-06068-012. PMID: 23414277 Partial author list: First Author & Affiliation: Parco, James E.; Department of Economics and Business, Colorado College, Colorado Springs, CO, US. Other Publishers: Haworth Press. Release Date: 20130415. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Military Psychology. Minor Descriptor: Bisexuality; Lesbianism; Male Homosexuality. Classification: Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Interview; Qualitative Study; Quantitative Study. References Available: Y. Page Count: 25. Issue Publication Date: Feb, 2013. AB - Through a mixed-methods approach of oral history and grounded theory, we report on a study investigating the effects of the U.S. military's Don't Ask, Don't Tell policy on active-duty service members at the moment of transition to open service. A stratified, snowball sample of lesbian, gay, bisexual, and queer (LGBQ) service members (n = 17) from across all branches of the armed services were interviewed within two weeks of repeal (September 20, 2011). We find evidence that DADT was implicated in the structuring of military culture in terms of five irreconcilable contradictions: values, heroism, wartime, control, and silence. Military culture had moved in the direction of acceptance of LGBQ service members long before repeal, without the recognition of many leaders who had entered military service decades earlier. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - United States KW - military psychology KW - lesbians KW - gay KW - bisexuality KW - queer KW - 2013 KW - Military Psychology KW - Bisexuality KW - Lesbianism KW - Male Homosexuality KW - 2013 DO - 10.1080/00918369.2013.744925 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-06068-012&site=ehost-live&scope=site UR - jim.parco@coloradocollege.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-06068-017 AN - 2013-06068-017 AU - Packard, Gary A. Jr. T1 - Review of Unfriendly Fire: How the Gay Ban Undermines the Military and Weakens America. JF - Journal of Homosexuality JO - Journal of Homosexuality JA - J Homosex Y1 - 2013/02// VL - 60 IS - 2-3 SP - 458 EP - 461 CY - United Kingdom PB - Taylor & Francis SN - 0091-8369 SN - 1540-3602 AD - Packard, Gary A. Jr. N1 - Accession Number: 2013-06068-017. Partial author list: First Author & Affiliation: Packard, Gary A. Jr.; Department of Behavioral Sciences and Leadership, United States Air Force Academy, CO, US. Other Publishers: Haworth Press. Release Date: 20130415. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Review-Book. Language: English. Major Descriptor: Military Personnel; Military Psychology. Minor Descriptor: Civil Rights; Policy Making. Classification: Military Psychology (3800). Population: Human (10). Reviewed Item: Frank, N. Unfriendly Fire: How the Gay Ban Undermines the Military and Weakens America=368 pages. $9.99 Kindle (ASIN: B003E74BGK); Thomas Dunne Books; $15.99, St. Martin’s Griffin, 2012; 2010. Page Count: 4. Issue Publication Date: Feb, 2013. AB - Reviews the book, Unfriendly Fire: How the Gay Ban Undermines the Military and Weakens America by N. Frank (2010). This book is effectively uses historical analysis, scientific data, and anecdotal evidence to tell a compelling story of why repeal was, quite simply, the right thing to do. The book stands as a benchmark that not only provides a rich historical and contextual analysis of this important civil rights issue but also informs current leaders and policy makers on critical cultural variables that will influence implementation in the years to come. Frank is able to accurately describe the climate and culture of military service under Don't Ask Don't Tell (DADT) through careful historical analysis and extensive interviews with service members who lived in silence during DADT. This careful approach to a highly controversial policy and law provides both a personal and historical retrospect that helps us understand the integrity. This book discusses the challenges faced by both gay and straight service members under DADT, challenges that still persist today as military personnel transition to a new era of open military service. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - policy makers KW - military personnel KW - military service KW - civil rights KW - 2013 KW - Military Personnel KW - Military Psychology KW - Civil Rights KW - Policy Making KW - 2013 U2 - Frank, N. (2010); Unfriendly Fire: How the Gay Ban Undermines the Military and Weakens America; 368 pages. $9.99 Kindle (ASIN: B003E74BGK); Thomas Dunne Books; $15.99, St. Martin’s Griffin, 2012; 978-0312603533 (Paperback). DO - 10.1080/00918369.2013.744934 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-06068-017&site=ehost-live&scope=site UR - gary.packard@usafa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-06068-021 AN - 2013-06068-021 AU - Samuels, Steven M. T1 - Review of How we won: Progressive lessons from the repeal of 'Don't Ask, Don't Tell'. JF - Journal of Homosexuality JO - Journal of Homosexuality JA - J Homosex Y1 - 2013/02// VL - 60 IS - 2-3 SP - 474 EP - 477 CY - United Kingdom PB - Taylor & Francis SN - 0091-8369 SN - 1540-3602 AD - Samuels, Steven M. N1 - Accession Number: 2013-06068-021. Partial author list: First Author & Affiliation: Samuels, Steven M.; Department of Behavioral Sciences and Leadership, United States Air Force Academy, Colorado Springs, CO, US. Other Publishers: Haworth Press. Release Date: 20130415. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Review-Book. Language: English. Major Descriptor: Military Psychology. Minor Descriptor: Justice; Lesson Plans; Male Homosexuality. Classification: Military Psychology (3800). Population: Human (10). Reviewed Item: Belkin, A. How we won: Progressive lessons from the repeal of Don't Ask, Don't Tell=New York, NY: Huffington Post Media Group, 108 pages. $4.99 Kindle (ASIN: B005NDLMVK); 2011. Page Count: 4. Issue Publication Date: Feb, 2013. AB - Reviews the book, How We Won: Progressive Lessons from the Repeal of Don't Ask, Don't Tell by A. Belkin (2011). This book discusses not only the facts of what occurred, but also how intricately he conspired to create the change that needed to happen. The author humorously and accurately points out that, 'progressives' problem isn't bad framing. The author discusses not only the facts of what occurred, but also how intricately he conspired to create the change that needed to happen. This book targets the research and the message on military effectiveness. In fact, if it weren't for the personal asides liberally sprinkled throughout the book, one would think, was an advocate for the military and not an activist for the LGBT community. This book again provides their vitriol, hatefulness, and people they've actively harmed, perhaps readers should ease up on a gay scholar who has worked ceaselessly for justice. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - progressive lessons KW - gay KW - military psychology KW - justice KW - 2013 KW - Military Psychology KW - Justice KW - Lesson Plans KW - Male Homosexuality KW - 2013 U2 - Belkin, A. (2011); How we won: Progressive lessons from the repeal of Don't Ask, Don't Tell; New York, NY: Huffington Post Media Group, 108 pages. $4.99 Kindle (ASIN: B005NDLMVK) DO - 10.1080/00918369.2013.744939 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-06068-021&site=ehost-live&scope=site UR - steven.samuels@usafa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Strack, Guinevere AU - Luckarift, Heather R. AU - Sizemore, Susan R. AU - Nichols, Robert K. AU - Farrington, Karen E. AU - Wu, Peter K. AU - Atanassov, Plamen AU - Biffinger, Justin C. AU - Johnson, Glenn R. T1 - Power generation from a hybrid biological fuel cell in seawater JO - Bioresource Technology JF - Bioresource Technology Y1 - 2013/01/15/ VL - 128 M3 - Article SP - 222 EP - 228 SN - 09608524 AB - Abstract: A hybrid biological fuel cell (HBFC) comprised of a microbial anode for lactate oxidation and an enzymatic cathode for oxygen reduction was constructed and then tested in a marine environment. Shewanella oneidensis DSP-10 was cultivated in laboratory medium and then fixed on a carbon felt electrode via a silica sol–gel process in order to catalyze anodic fuel cell processes. The cathode electrocatalyst was composed of bilirubin oxidase, fixed to a carbon nanotube electrode using a heterobifunctional cross linker, and then stabilized with a silica sol–gel coating. The anode and cathode half-cells provided operating potentials of −0.44 and 0.48V, respectively (vs. Ag/AgCl). The HBFC maintained a reproducible open circuit voltage >0.7V for 9d in laboratory settings and sustained electrocatalytic activity for >24h in open environment tests. [Copyright &y& Elsevier] AB - Copyright of Bioresource Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Seawater KW - Oxidation-reduction reaction KW - Hybrid systems KW - Microbial fuel cells KW - Fuel cells -- Electrodes KW - Sol-gel processes KW - Bilirubin oxidase KW - Enzymatic fuel cell KW - Microbial fuel cell KW - Multicopper oxidase KW - Shewanella oneidensis N1 - Accession Number: 85284478; Strack, Guinevere 1,2; Luckarift, Heather R. 1,3; Sizemore, Susan R. 1,3; Nichols, Robert K. 1,3; Farrington, Karen E. 1,3; Wu, Peter K. 4; Atanassov, Plamen 5; Biffinger, Justin C. 6; Johnson, Glenn R. 1; Email Address: glenn.johnson.8@us.af.mil; Affiliations: 1: Microbiology and Applied Biochemistry Laboratory, Airbase Technologies Division, US Air Force Research Laboratory, Tyndall Air Force Base, FL 32403, United States; 2: Oak Ridge Institute of Science and Engineering, Oak Ridge, TN 37831, United States; 3: Universal Technology Corporation, 1270 N. Fairfield Road Dayton, OH 45432, United States; 4: Department of Physics and Engineering, Southern Oregon University, Ashland, OR 97520, United States; 5: Center for Emerging Energy Technologies, University of New Mexico, Albuquerque, NM 87131, United States; 6: US Naval Research Laboratory, Washington, DC 20375, United States; Issue Info: Jan2013, Vol. 128, p222; Thesaurus Term: Seawater; Thesaurus Term: Oxidation-reduction reaction; Subject Term: Hybrid systems; Subject Term: Microbial fuel cells; Subject Term: Fuel cells -- Electrodes; Subject Term: Sol-gel processes; Subject Term: Bilirubin oxidase; Author-Supplied Keyword: Enzymatic fuel cell; Author-Supplied Keyword: Microbial fuel cell; Author-Supplied Keyword: Multicopper oxidase; Author-Supplied Keyword: Shewanella oneidensis; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.biortech.2012.10.104 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=85284478&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Behabtu, Natnael AU - Young, Colin C. AU - Tsentalovich, Dmitri E. AU - Kleinerman, Olga AU - Xuan Wang AU - Ma, Anson W. K. AU - Bengio, E. Amram AU - Waarbeek, Ron F. ter AU - de Jong, Jorrit J. AU - Hoogerwerf, Ron E. AU - Fairchild, Steven B. AU - Ferguson, John B. AU - Maruyama, Benji AU - Kono, Junichiro AU - Talmon, Yeshayahu AU - Cohen, Yachin AU - Otto, Marcin J. AU - Pasquali, Matteo T1 - Strong, Light, Multifunctional Fibers of Carbon Nanotubes with Ultrahigh Conductivity. JO - Science JF - Science Y1 - 2013/01/11/ VL - 339 IS - 6116 M3 - Article SP - 182 EP - 186 SN - 00368075 AB - The article focuses on research into high-performance multifunctional carbon nanotube (CNT) fibers. It states the CNT fibers combine the specific electrical conductivity of metals while possessing the stiffness, strength, and thermal conductivity of carbon fibers. It mentions the CNT fibers are produced through high-throughput wet spinning which is the same process used in manufacturing high-performance industrial fibers. It suggests the scalable CNT fibers could be utilized in field emission and aerospace electronics. It comments that the synthesis of all-armchair single-walled carbon nanotubes may be needed to reach ultimate conductivity in the fibers. KW - Metals KW - Carbon nanotubes KW - Electric conductivity KW - Thermal conductivity KW - Carbon fibers KW - Spinning (Textiles) KW - Field emission KW - Electronics KW - Single walled carbon nanotubes N1 - Accession Number: 85002997; Behabtu, Natnael 1; Young, Colin C. 1; Tsentalovich, Dmitri E. 1; Kleinerman, Olga 2; Xuan Wang 1; Ma, Anson W. K. 1; Bengio, E. Amram 1,2; Waarbeek, Ron F. ter 3; de Jong, Jorrit J. 3; Hoogerwerf, Ron E. 3; Fairchild, Steven B. 4; Ferguson, John B. 4; Maruyama, Benji 4; Kono, Junichiro 1; Talmon, Yeshayahu 2; Cohen, Yachin 2; Otto, Marcin J. 3; Pasquali, Matteo 1; Email Address: mp@rice.edu; Affiliations: 1: Smalley Institute for Nanoscale Science and Technology, Rice University, Houston, TX 77005, USA; 2: Department of Chemical Engineering, Technion-Israel Institute of Technology and Russell Berrie Nanotechnology Institute (RBNI), Haifa 32000, Israel; 3: Teijin Aramid, Arnhem, Netherlands; 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Issue Info: 1/11/2013, Vol. 339 Issue 6116, p182; Thesaurus Term: Metals; Subject Term: Carbon nanotubes; Subject Term: Electric conductivity; Subject Term: Thermal conductivity; Subject Term: Carbon fibers; Subject Term: Spinning (Textiles); Subject Term: Field emission; Subject Term: Electronics; Subject Term: Single walled carbon nanotubes; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 313110 Fiber, Yarn, and Thread Mills; Number of Pages: 5p; Document Type: Article L3 - 10.1126/science.2228061 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=85002997&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - ROWE, DEREK A.1 T1 - FOREIGN MILITARY SALES (FMS), PSEUDO-FMS, AND A RESPONSE TO THE GAO--IS PSEUDO-FMS THE WAY FORWARD? JO - Air Force Law Review JF - Air Force Law Review J1 - Air Force Law Review PY - 2013/01// Y1 - 2013/01// VL - 69 M3 - Article SP - 199 EP - 217 SN - 00948381 AB - The article focuses on the report of the U.S. Government Accountability Office. It discusses two aspects of the United Nations Department of Defenses (DoD) regarding implementation of Foreign Military Sales (FMS) and Pseudo-FMS such as end-use monitoring (EUM) and tracking of transferred military equipment. It highlights benefits to the U.S. which includes interoperability, economy of scale cost-savings and business for U.S. based contractors, and weapon control. KW - Arms transfers KW - War KW - Contractors KW - Military supplies KW - Weapons -- Costs KW - United States. Government Accountability Office KW - United Nations. Dept. of Peace-keeping Operations N1 - Accession Number: 87515708; Authors:ROWE, DEREK A. 1; Affiliations: 1: Judge Advocate, United States Air Force; Subject: United States. Government Accountability Office; Subject: Arms transfers; Subject: Military supplies; Subject: United Nations. Dept. of Peace-keeping Operations; Subject: War; Subject: Contractors; Subject: Weapons -- Costs; Number of Pages: 19p; Statute:Lend-Lease Act; 22 U.S.C. §§ 411-419 (1941); Jurisdiction:United States; Statute:Foreign Assistance Act of 1961; 22 U.S.C. §§ 2151-2296 (1961); Jurisdiction:United States; Statute:Arms Export Control Act of 1976; 2 2 U.S.C. §§ 2751-2799 (1976); Jurisdiction:United States; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=87515708&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR ID - 103951794 T1 - Predicting battlefield vigilance: a multivariate approach to assessment of attentional resources. AU - Matthews, Gerald AU - Warm, Joel S. AU - Shaw, Tyler H. AU - Finomore, Victor S. Y1 - 2013/01// N1 - Accession Number: 103951794. Language: English. Entry Date: 20130204. Revision Date: 20150710. Publication Type: Journal Article; pictorial; research; tables/charts. Journal Subset: Biomedical; Europe; Peer Reviewed; UK & Ireland. Instrumentation: 21-item Coping in Task Situations (CITS-S) questionnaire (Matthews and Campbell 1998); Letter Series; 96-item Dundee Stress State Questionnaire (DSSQ; Matthews et al. 2002, 2013); Sensation-seeking scale (Whiteside and Lynam 2001); I7 Impulsiveness Questionnaire (Eysenck and Eysenck 1977); ETS Kit. Grant Information: This research was supported by Contract W74V8H-06-C-0049 subcontract 06-S-1003 from the Army Research Institute and the JXT Corporation.. NLM UID: 0373220. KW - Attention KW - Military Personnel KW - Task Performance and Analysis KW - Human KW - Female KW - Male KW - Adult KW - P-Value KW - Regression KW - Coping KW - Path Analysis KW - Models, Theoretical KW - Funding Source KW - Psychological Tests SP - 856 EP - 875 JO - Ergonomics JF - Ergonomics JA - ERGONOMICS VL - 56 IS - 1 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - Technological innovation increasingly requires operators in various applied settings to maintain vigilance for extended periods. However, standard psychometric tests typically predict less than 10% of performance variance. The present study (N = 462) aimed to apply the resource theory of sustained attention to construct a multivariate test battery for predicting battlefield vigilance. The battery included cognitive ability tests, a high-workload short vigilance task and subjective measures of stress response. Four versions of a 60- min simulated military battlefield monitoring task were constructed to represent different operational requirements. The test battery predicted 24–44% of criterion variance, depending on task version, suggesting that it may identify vigilant operators in military and other applied contexts. A multiple-groups path analysis showed that relationships between ability and vigilance were moderated by working memory demands. Findings are consistent with a diffuse theoretical concept of ‘resources’ in which performance energisation depends on multiple, loosely coupled processes. Practitioner Summary:Assessment of operators' competence in vigilant monitoring is increasingly important as automation technology becomes more prevalent. This study investigated the validity of a battery of measures of attentional resources in predicting vigilance on a military display monitoring task. Findings confirm that the multivariate approach substantially enhances prediction over existing approaches. SN - 0014-0139 AD - Institute of Simulation and Training, University of Central Florida, Orlando, FL, USA AD - Air Force Research Laboratory, Dayton, OH, USA; University of Dayton Research Institute, Dayton, OH, USA AD - Department of Psychology, George Mason University, Fairfax, VA, USA AD - Air Force Research Laboratory, Dayton, OH, USA U2 - PMID: 24678837. DO - 10.1080/00140139.2014.899630 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=103951794&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - CHAP AU - Silz Carson, Katherine AD - US Air Force Academy, Colorado Springs A2 - List, John A. A2 - Price, Michael K. T1 - Incentive Compatible Mechanisms for Providing Environmental Public Goods T2 - Handbook on Experimental Economics and the Environment PB - Cheltenham, U.K. and Northampton, Mass.: Elgar Y1 - 2013/// SP - 434 EP - 457 N1 - Accession Number: 1575629; Reviewed Book ISBN: 978-1-84720-645-9; Keywords: Public Goods; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Collective Volume Article; Update Code: 201607 KW - Design of Experiments: Laboratory, Individual C91 KW - Consumer Economics: Empirical Analysis D12 KW - Public Goods H41 KW - Recreational Aspects of Natural Resources Q26 KW - Valuation of Environmental Effects Q51 KW - Environmental Economics: Government Policy Q58 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1575629&site=ehost-live&scope=site DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Kay, Steven AU - Ding, Quan AU - Rangaswamy, Muralidhar T1 - Sensor Integration by Joint PDF Construction using the Exponential Family. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2013/01// VL - 49 IS - 1 M3 - Article SP - 580 EP - 593 SN - 00189251 AB - We investigate the problem of sensor integration to combine all the available information in a multi-sensor setting from a statistical standpoint. Specifically, we propose a novel method of constructing the joint probability density function (pdf) of the measurements from all the sensors based on the exponential family and small signal assumption. The constructed pdf only requires knowledge of the joint pdf under a reference hypothesis and, hence, is useful in many practical cases. Examples and simulation results show that our method requires less information compared with existing methods but attains comparable detection/classification performance. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PDF (Computer file format) KW - INFORMATION theory KW - GEOMETRICAL constructions KW - MAXIMUM likelihood statistics KW - DENSITY functionals KW - SIGNAL-to-noise ratio KW - Biomedical measurements KW - Joints KW - Maximum likelihood estimation KW - Probability density function KW - Radar KW - Training data KW - Vectors N1 - Accession Number: 84742629; Kay, Steven 1; Ding, Quan 1; Rangaswamy, Muralidhar 2; Affiliations: 1: University of Rhode Island; 2: Air Force Research Laboratory; Issue Info: Jan2013, Vol. 49 Issue 1, p580; Thesaurus Term: PDF (Computer file format); Thesaurus Term: INFORMATION theory; Subject Term: GEOMETRICAL constructions; Subject Term: MAXIMUM likelihood statistics; Subject Term: DENSITY functionals; Subject Term: SIGNAL-to-noise ratio; Author-Supplied Keyword: Biomedical measurements; Author-Supplied Keyword: Joints; Author-Supplied Keyword: Maximum likelihood estimation; Author-Supplied Keyword: Probability density function; Author-Supplied Keyword: Radar; Author-Supplied Keyword: Training data; Author-Supplied Keyword: Vectors; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TAES.2013.6404121 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=84742629&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Choi, Sukwon AU - Heller, Eric R. AU - Dorsey, Donald AU - Vetury, Ramakrishna AU - Graham, Samuel T1 - The Impact of Bias Conditions on Self-Heating in AlGaN/GaN HEMTs. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices J1 - IEEE Transactions on Electron Devices PY - 2013/01// Y1 - 2013/01// VL - 60 IS - 1 M3 - Article SP - 159 EP - 162 SN - 00189383 AB - The thermal response of AlGaN/GaN high electron mobility transistors directly correlates with the overall performance and reliability of these devices. In general, a hot spot develops near the drain end of the gate electrode during power dissipation. The device channel temperature was examined via micro-Raman spectroscopy under various bias conditions where power dissipation levels were identical. Under these bias conditions, difference in internal states (sheet carrier density and electric field distribution) within the device alters the heat generation profile across the channel. High Vds conditions lead to significantly higher channel temperature compared to that for low Vds conditions although the power dissipation is kept constant. Experimental results show \sim\!\!\13\ ^\circ\C deviation between Vds = \45\ \V and Vds = \7\ \V cases when the power dissipation is 4.5 W/mm. This suggests that bias conditions may have a relatively significant impact on device reliability and that this effect must be considered when building thermal models of devices under operation or undergoing accelerated life testing. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - HIGH electron mobility transistors KW - RAMAN effect KW - LIGHT -- Scattering KW - SEMICONDUCTORS KW - TEMPERATURE measurements KW - CALORIMETRY N1 - Accession Number: 84489933; Source Information: Jan2013, Vol. 60 Issue 1, p159; Subject Term: GALLIUM nitride; Subject Term: HIGH electron mobility transistors; Subject Term: RAMAN effect; Subject Term: LIGHT -- Scattering; Subject Term: SEMICONDUCTORS; Subject Term: TEMPERATURE measurements; Subject Term: CALORIMETRY; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1109/TED.2012.2224115 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=84489933&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - CHAP ID - 2013-10635-003 AN - 2013-10635-003 AU - Villado, Anton J. AU - Day, Eric Anthony AU - Arthur, Winfred Jr. AU - Boatman, Paul R. AU - Kowollik, Vanessa AU - Bhupatkar, Alok AU - Bennett, Winston Jr. ED - Arthur, Winfred Jr. ED - Day, Eric Anthony ED - Bennett, Winston Jr. ED - Portrey, Antoinette M. ED - Arthur, Winfred Jr., (Ed) ED - Day, Eric Anthony, (Ed) ED - Bennett, Winston Jr., (Ed) ED - Portrey, Antoinette M., (Ed) T1 - Complex command-and-control simulation task performance following periods of nonuse. T2 - Individual and team skill decay: The science and implications for practice. T3 - Applied psychology series Y1 - 2013/// SP - 53 EP - 67 CY - New York, NY, US PB - Routledge/Taylor & Francis Group SN - 978-0-415-82193-3 SN - 978-0-415-88578-2 SN - 978-0-203-57607-6 N1 - Accession Number: 2013-10635-003. Partial author list: First Author & Affiliation: Villado, Anton J.; Department of Psychology, Rice University, Houston, TX, US. Release Date: 20140217. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-0-415-82193-3, Paperback; 978-0-415-88578-2, Hardcover; 978-0-203-57607-6, PDF. Language: English. Grant Information: Arthur, Winfred Jr. Major Descriptor: Computer Simulation; Decision Making; Memory Decay; Performance; Retention. Minor Descriptor: Military Duty Status; Emergency Management; First Responders. Classification: Learning & Memory (2343); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). Tests & Measures: Jane's Fleet Command. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 15. AB - Despite the critical role of military reserves, first responders, and emergency management personnel during emergency disasters, the training literature provides limited information regarding the retention or decay of these types of skills (i.e., cognitively complex decision-making skills). Researchers and training professionals are left to assume that the retention or decay of cognitively complex decision-making skills is similar to that of the cognitively simple skills upon which most of the skill retention and decay literature is based. We believe that this assumptions that cognitively complex skills are similar to cognitively simple skills needs, to be empirically investigated. Therefore, the purpose of the present study is to examine the retention or decay of complex, decision-making skills during periods of nonuse. Using 192 paid participants who trained for approximately 10 hours on a command-and control microworld simulation, we examined the amount and trend of skill decay over periods of nonuse, ranging from 1 to 8 weeks. Our results suggest that skill decay on complex tasks may not parallel that of simple tasks. Moreover, skill on complex tasks may be more resistant to decay than previously thought. The present study begins to address gaps in the extant literature by using a complex task and an extended nonuse interval. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - command-and-control simulation task KW - decision-making skills KW - skill decay KW - skill retention KW - nonuse of skills KW - task performance KW - emergency management personnel KW - military reserves KW - first responders KW - 2013 KW - Computer Simulation KW - Decision Making KW - Memory Decay KW - Performance KW - Retention KW - Military Duty Status KW - Emergency Management KW - First Responders KW - 2013 U1 - Sponsor: US Air Force Research Laboratory, Human Effectiveness Directorate, Warfighter Training Research Division, US. Recipients: No recipient indicated U1 - Sponsor: Defense Advanced Research Projects Agency. Recipients: No recipient indicated U1 - Sponsor: National Science Foundation. Recipients: Arthur, Winfred Jr. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-10635-003&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2013-10635-006 AN - 2013-10635-006 AU - Jastrzembski, Tiffany S. AU - Portrey, Antoinette M. AU - Schreiber, Brian T. AU - Cluck, Kevin A. ED - Arthur, Winfred Jr. ED - Day, Eric Anthony ED - Bennett, Winston Jr. ED - Portrey, Antoinette M. ED - Arthur, Winfred Jr., (Ed) ED - Day, Eric Anthony, (Ed) ED - Bennett, Winston Jr., (Ed) ED - Portrey, Antoinette M., (Ed) T1 - Improving military readiness: Evaluation and prediction of performance to optimize training effectiveness. T2 - Individual and team skill decay: The science and implications for practice. T3 - Applied psychology series Y1 - 2013/// SP - 153 EP - 175 CY - New York, NY, US PB - Routledge/Taylor & Francis Group SN - 978-0-415-82193-3 SN - 978-0-415-88578-2 SN - 978-0-203-57607-6 N1 - Accession Number: 2013-10635-006. Partial author list: First Author & Affiliation: Jastrzembski, Tiffany S.; Air Force Research Laboratory, OH, US. Release Date: 20140217. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-0-415-82193-3, Paperback; 978-0-415-88578-2, Hardcover; 978-0-203-57607-6, PDF. Language: English. Major Descriptor: Military Psychology; Military Training; Performance; Knowledge (General). Minor Descriptor: Technology Transfer. Classification: Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 23. AB - Integrating historically separate and conceptually distinct research investments at the Air Force Research Laboratory's Warfighter Readiness Research Division, we present a new technological capability for predicting how much knowledge and skill decay will occur for an individual, team, or squadron after an extended period of nonuse or practice, utilizing that information to more optimally schedule future training and rehearsal events. We align Mission Essential Competencies (MFCs) research, which provide expert-driven identification of key enablers for operational success, with the Performance Evaluation Tracking System (PETS) line of research—a fine-resolution performance measurement tool used in high-complexity, time-pressured, mission-relevant domains—to provide a performance measurement foundation to adequately equip our third line of research—the predictive performance equation (PPE). The co-dependence among the MECs, PETS, and PPE research lines provide us with the methods, metrics, and models required to achieve our vision for optimally adaptive, individualized training and rehearsal experiences. This chapter seeks to showcase how the integration of these research foci will be used in the application of psychological science to improve the readiness of our forces. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - military readiness KW - optimize training effectiveness KW - technological capability KW - knowledge KW - performance KW - 2013 KW - Military Psychology KW - Military Training KW - Performance KW - Knowledge (General) KW - Technology Transfer KW - 2013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-10635-006&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2013-10635-009 AN - 2013-10635-009 AU - Villado, Anton J. AU - Day, Eric Anthony AU - Arthur, Winfred Jr. AU - Boatman, Paul R. AU - Kowollik, Vanessa AU - Bhupatkar, Alok AU - Bennett, Winston Jr. ED - Arthur, Winfred Jr. ED - Day, Eric Anthony ED - Bennett, Winston Jr. ED - Portrey, Antoinette M. ED - Arthur, Winfred Jr., (Ed) ED - Day, Eric Anthony, (Ed) ED - Bennett, Winston Jr., (Ed) ED - Portrey, Antoinette M., (Ed) T1 - Use of, reaction to, and efficacy of observation rehearsal training: Enhancing skill retention on a complex command-and-control simulation task. T2 - Individual and team skill decay: The science and implications for practice. T3 - Applied psychology series Y1 - 2013/// SP - 240 EP - 257 CY - New York, NY, US PB - Routledge/Taylor & Francis Group SN - 978-0-415-82193-3 SN - 978-0-415-88578-2 SN - 978-0-203-57607-6 N1 - Accession Number: 2013-10635-009. Partial author list: First Author & Affiliation: Villado, Anton J.; Department of Psychology, Rice University, Houston, TX, US. Release Date: 20140217. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-0-415-82193-3, Paperback; 978-0-415-88578-2, Hardcover; 978-0-203-57607-6, PDF. Language: English. Grant Information: Arthur, Winfred Jr. Major Descriptor: Computer Simulation; Knowledge Transfer; Relearning; Retention; Training. Minor Descriptor: Skill Learning. Classification: Learning & Memory (2343). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). Tests & Measures: Jane's Fleet Command; APM Raven’s Advanced Progressive Matrices DOI: 10.1037/t10893-000; Reaction Measure DOI: 10.1037/t14673-000; Goldberg’s 100 Unipolar Markers DOI: 10.1037/t21928-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 18. AB - The purpose of the present study was to assess the use of post-acquisition observational rehearsal in maximizing retention and facilitating skill transfer and reacquisition after an extended period of nonuse using a complex command-and-control microworld simulation. Given the lack of guidance in enhancing skill retention during periods of nonuse, the present study sought to accomplish four goals concerning a posttraining internet-based observational rehearsal training intervention. The first goal was to assess whether trainees will voluntarily engage in rehearsal if such an opportunity were available. Simply making a training program available does not rnean that trainees will avail themselves of that training. A second goal was to determine whether trainees who engage in voluntary observational refresher training could be differentiated from those who do not. The ability to distinguish between trainees who will and will not has implications for both selection and the assignment of trainees to this type of training. The third goal was to document trainees' reactions to the internet-based observational refresher training. Finally, and most importantly, the fourth goal was to test the effects of the observational refresher, training on various training outcomes. Specifically, we were interested in determining the efficacy of observational refresher training on skill retention, transfer, and reacquisition. In summary, our objective was to provide both researchers and training professionals with some guidance on alternatives to hands-on practice for the purpose of facilitating performance on a complex task after prolonged nonuse. So, using 192 paid participants who trained for approximately 10 hours on a command-and-control microworld simulation, we examined the level of participation, individual differences that were related to participation, and.the reaction to a voluntary observational rehearsal nonuse training intervention. We also examined the efficacy of the voluntary observational based training intervention in enhancing skill retention in comparison to mandatory and no observational training. We found that only a small percentage (29 percent) of trainees utilized the. voluntary training. Non-ability rather than ability-based individual differences were better able to differentiate those who availed themselves of the observational based training intervention from those who did not. In general, reactions to the internet-based refresher training were positive. Finally, the efficacy of the training was dependent on the training outcome. The observational based training intervention improved training transfer, but not retention nor reacquisition. The implications of our findings are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - observation rehearsal training KW - command-and-control simulation task KW - skill retention KW - skill transfer KW - reacquisition KW - 2013 KW - Computer Simulation KW - Knowledge Transfer KW - Relearning KW - Retention KW - Training KW - Skill Learning KW - 2013 U1 - Sponsor: US Air Force Research Laboratory, Human Effectiveness Directorate, Warfighter Training Research Division, US. Recipients: No recipient indicated U1 - Sponsor: Defense Advanced Research Projects Agency. Recipients: No recipient indicated U1 - Sponsor: National Science Foundation. Recipients: Arthur, Winfred Jr. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-10635-009&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2013-10635-011 AN - 2013-10635-011 AU - Day, Eric Anthony AU - Arthur, Winfred Jr. AU - Villado, Anton J. AU - Boatman, Paul R. AU - Kowollik, Vanessa AU - Bhupatkar, Alok AU - Bennett, Winston Jr. ED - Arthur, Winfred Jr. ED - Day, Eric Anthony ED - Bennett, Winston Jr. ED - Portrey, Antoinette M. ED - Arthur, Winfred Jr., (Ed) ED - Day, Eric Anthony, (Ed) ED - Bennett, Winston Jr., (Ed) ED - Portrey, Antoinette M., (Ed) T1 - Relating individual differences in ability personality and motivation to the retention and transfer of skill on a complex command-and-control simulation task. T2 - Individual and team skill decay: The science and implications for practice. T3 - Applied psychology series Y1 - 2013/// SP - 282 EP - 301 CY - New York, NY, US PB - Routledge/Taylor & Francis Group SN - 978-0-415-82193-3 SN - 978-0-415-88578-2 SN - 978-0-203-57607-6 N1 - Accession Number: 2013-10635-011. Partial author list: First Author & Affiliation: Day, Eric Anthony; Department of Psychology, University of Oklahoma, Norman, OK, US. Release Date: 20140217. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-0-415-82193-3, Paperback; 978-0-415-88578-2, Hardcover; 978-0-203-57607-6, PDF. Language: English. Grant Information: Arthur, Winfred Jr. Major Descriptor: Ability; Individual Differences; Motivation; Personality; Retention. Minor Descriptor: Knowledge Transfer; Relearning; Simulation. Classification: Cognitive Processes (2340). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). Tests & Measures: Jane's Fleet Command; APM Raven’s Advanced Progressive Matrices DOI: 10.1037/t10893-000; Self-Efficacy Scale; Goldberg’s 100 Unipolar Markers DOI: 10.1037/t21928-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 20. AB - The purpose of the present study was to examine how well individual differences in ability, personality, and motivation predict skill retention and transfer after an extended period (i.e., 8 weeks) of nonuse' on a complex command-and-control microworld simulation. We also included a brief assessment of skill reacquisition as a criterion of interest. Cognitive ability was the primary ability factor investigated. We also examined how well a test of declarative knowledge at the end of a designated skill acquisition period predicted skill retention and transfer. Personality variables included conscientiousness and openness to experience. Motivation variables included self efficacy and achievement motivation (i.e., mastery, performance approach, and performance avoidance goals) assessed at the end of skill acquisition. Transfer was operationalized in terms of adapting ones' skill to novel and overwhelming performance demands. Additionally, we examined the extent to which individual differences in ability, personality, and motivation yield incremental validity in the prediction of skill retention, transfer, and reacquisition beyond immediate assessments of posttraining skill. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - individual differences KW - ability KW - personality KW - motivation KW - command-and-control simulation task KW - retention KW - transfer KW - reacquisition KW - 2013 KW - Ability KW - Individual Differences KW - Motivation KW - Personality KW - Retention KW - Knowledge Transfer KW - Relearning KW - Simulation KW - 2013 U1 - Sponsor: US Air Force Research Laboratory, Human Effectiveness Directorate, Warfighter Training Research Division, US. Recipients: No recipient indicated U1 - Sponsor: Defense Advanced Research Projects Agency. Recipients: No recipient indicated U1 - Sponsor: National Science Foundation. Recipients: Arthur, Winfred Jr. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-10635-011&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2013-10635-013 AN - 2013-10635-013 AU - Arthur, Winfred Jr. AU - Day, Eric Anthony AU - Villado, Anton J. AU - Glaze, Ryan M. AU - Schuelke, Matthew J. AU - Boatman, Paul R. AU - Kowollik, Vanessa AU - Wang, Xiaoqian AU - Bennett, Winston Jr. ED - Arthur, Winfred Jr. ED - Day, Eric Anthony ED - Bennett, Winston Jr. ED - Portrey, Antoinette M. ED - Arthur, Winfred Jr., (Ed) ED - Day, Eric Anthony, (Ed) ED - Bennett, Winston Jr., (Ed) ED - Portrey, Antoinette M., (Ed) T1 - A comparative investigation of individual and team skill retention and transfer on a complex command-and-control simulation task. T2 - Individual and team skill decay: The science and implications for practice. T3 - Applied psychology series Y1 - 2013/// SP - 321 EP - 343 CY - New York, NY, US PB - Routledge/Taylor & Francis Group SN - 978-0-415-82193-3 SN - 978-0-415-88578-2 SN - 978-0-203-57607-6 N1 - Accession Number: 2013-10635-013. Partial author list: First Author & Affiliation: Arthur, Winfred Jr.; Department of Psychology, Texas A&M University, College Station, TX, US. Release Date: 20140217. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-0-415-82193-3, Paperback; 978-0-415-88578-2, Hardcover; 978-0-203-57607-6, PDF. Language: English. Grant Information: Arthur, Winfred Jr. Major Descriptor: Knowledge Transfer; Performance; Retention. Minor Descriptor: Simulation; Teams. Classification: Human Experimental Psychology (2300). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). Tests & Measures: Jane's Fleet Command. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 23. AB - Reliance on teams is now a pervasive reality in many military and civilian settings, and teams have become an integral part of organizational tasks and missions. With the continued increase in the use of teams in organizations, there has been commensurate interest in how to effectively train teams (Salas, Bowers, and Cannon-Bowers, 1995; Salas and Cannon-Bowers, 2001) with some studies (e.g., Bohlander and McCarthy, 1996; Day et al., 2005; Salas, Dickinson, Converse, and Tannenbaum, 1992) assessing differences between effective and ineffective teams, and others (e.g., Arthur et al., 2005; Arthur, Villado, and Bennett, 2012; Day et al., 2005; Swezey and Salas, 1992) developing guidelines for team training. Thus, an investigation of the retention and transfer of complex skills in the context of teams is an important logical extension of the investigation of these phenomena that have typically been studied at the individual level. Hence, the fundamental differences between individual and team performance necessitates the need for research comparing individual versus team retention and transfer after extended periods of nonuse. Using 231 paid participants who trained in three-person teams (N= 77 teams) on a command-and-control task, we examined the comparative effectiveness of two practice schedules in terms of end-of-acquisition performance, retention after an 8-week nonuse interval, and transfer performance. Furthermore, we compared two protocols, individual- and team-level protocols, which used the same task and practice schedules to assess the extent to which the spacing of practice effect generalized from individuals to teams. The results indicated that teams and individuals displayed differing levels of skill acquisition and transfer, but similar levels of retention. Furthermore, the spacing of practice had a larger effect on individuals than teams. Finally, both teams and individuals displayed smaller levels of skill decay after an extended period of nonuse than researchers may be inclined to anticipate. The primary conclusion based on our findings is that teams engender features and characteristics not found in individuals and these features and characteristics influence processes associated with skill acquisition, retention, and transfer. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - individual & team skill retention KW - command-and-control simulation task KW - transfer KW - 2013 KW - Knowledge Transfer KW - Performance KW - Retention KW - Simulation KW - Teams KW - 2013 U1 - Sponsor: US Air Force Research Laboratory, Human Effectiveness Directorate, Warfighter Training Research Division, US. Recipients: No recipient indicated U1 - Sponsor: Defense Advanced Research Projects Agency. Recipients: No recipient indicated U1 - Sponsor: National Science Foundation. Recipients: Arthur, Winfred Jr. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-10635-013&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2013-10635-014 AN - 2013-10635-014 AU - Cooke, Nancy J. AU - Corman, Jamie C. AU - Duran, Jasmine AU - Myers, Christopher W. AU - Andrews, Dee ED - Arthur, Winfred Jr. ED - Day, Eric Anthony ED - Bennett, Winston Jr. ED - Portrey, Antoinette M. ED - Arthur, Winfred Jr., (Ed) ED - Day, Eric Anthony, (Ed) ED - Bennett, Winston Jr., (Ed) ED - Portrey, Antoinette M., (Ed) T1 - Retention of team coordination skill. T2 - Individual and team skill decay: The science and implications for practice. T3 - Applied psychology series Y1 - 2013/// SP - 344 EP - 363 CY - New York, NY, US PB - Routledge/Taylor & Francis Group SN - 978-0-415-82193-3 SN - 978-0-415-88578-2 SN - 978-0-203-57607-6 N1 - Accession Number: 2013-10635-014. Partial author list: First Author & Affiliation: Cooke, Nancy J.; Arizona State University, Tempe, AZ, US. Release Date: 20140217. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-0-415-82193-3, Paperback; 978-0-415-88578-2, Hardcover; 978-0-203-57607-6, PDF. Language: English. Major Descriptor: Ability; Group Performance; Retention; Teams. Classification: Human Experimental Psychology (2300). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). Tests & Measures: Coordinated Awareness of Situation by Teams Measure; Teamwork Questionnaire DOI: 10.1037/t24916-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 20. AB - In this chapter we make the case that it is—that there is skill decay at the team level of analysis. Specifically, in previously collected data, we examine the relative contributions of individual performance decay and loss of team interaction skills to predict team performance decay. Results indicate that team performance decay and/or retention is accounted for by differences in team member interaction, rather than individual competency. These results support the view that team performance is more than the sum of individual team member performance, and that differences in team retention can be attributed to team interaction processes. These findings have implications for team training for long-term retention. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - team coordination skills KW - retention KW - skill decay KW - individual performance decay KW - team performance KW - 2013 KW - Ability KW - Group Performance KW - Retention KW - Teams KW - 2013 U1 - Sponsor: US Air Force Office of Scientific Research, US. Grant: FA9550-07-1-0081; FA9550-04-1-0234. Recipients: No recipient indicated U1 - Sponsor: Air Force Research Laboratory (AFRL), Warfighter Readiness Research Division, US. Grant: FA8650-04-6442. Recipients: No recipient indicated UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-10635-014&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Davis, Kevin J. AU - Levy, David A. AU - Parco, James E. AD - US Air Force Academy AD - US Air Force Academy AD - CO College T1 - Comparing Institutional Level and Technical Core Leaders: How Personality and Organizational Roles Affect Leadership Choices JO - International Journal of Strategic Management JF - International Journal of Strategic Management Y1 - 2013/// VL - 13 IS - 3 SP - 5 EP - 16 SN - 15552411 N1 - Accession Number: 1525016; Keywords: Military; Organization; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 201510 N2 - Conventional wisdom suggests that leaders should conform to a style best suited for one's organization, or at least the best style for a particular role. Yet, this approach implies a unitary approach to leadership and assumes chameleon-like capabilities. (Conger 2004) Recent work on the power of authenticity (e.g., George, et al., 2007) and the persistence of personality make it seem unlikely that would-be leaders are sufficiently malleable to change his or her leadership style at will. Instead, we should expect leaders to gravitate toward the roles in which they can be most authentic. We demonstrate this expected, natural sorting by examining US military organizations using Thompson's (1967) division of responsibility and control within organizations. In particular, we apply Yukl's (2008) leadership dimensions and Gangestad and Snyder's (2000) self-monitoring scale to demonstrate that technical core and institutional level leaders rely on very different leadership styles. We then show that the need for authenticity drives different personalities into very different leadership roles. KW - Organizational Behavior; Transaction Costs; Property Rights D23 KW - National Security and War H56 KW - Personnel Management; Executives; Executive Compensation M12 KW - Personnel Economics: Labor Management M54 L3 - http://www.iabe.org/domains/iabeX/journalinfo.aspx?JournalID=IJSM UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1525016&site=ehost-live&scope=site UR - http://www.iabe.org/domains/iabeX/journalinfo.aspx?JournalID=IJSM DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Martin, John A. AU - Green, Steve G. AU - Heppard, Kurt A. T1 - Improving International Business Education: Opportunities for Experiential Learning in Emerging and Developing Markets. JO - Journal of International Business Education JF - Journal of International Business Education Y1 - 2013/01// VL - 8 M3 - Article SP - 75 EP - 88 SN - 16494946 AB - As the global business environment continues to attract the attention of institutions of higher education, international business (IB) and management education pedagogy is transforming to meet the many challenges and opportunities associated with improvement efforts. This is particularly acute in IB education relating to emerging and developing markets. Building upon our previous article that provided insights into generalizable IB pedagogy trends, we describe how we capitalized on several different educational approaches for experiential learning projects. In this paper, we examine and investigate the experiential nature of capstone projects we implemented and discuss assessment and assurance of learning implications. We offer an example and summary case study of an innovative approach to a capstone experience at the United States Air Force Academy where the students established a new social venture that directly involves an emerging and under-developed nation (Cambodia) to illustrate a deliberate capstone experience with applicability to emerging and under-developed nations. We close with recommendations and thoughts about future inquiry into improving IB pedagogy. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of International Business Education is the property of NeilsonJournals Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERNATIONAL business enterprises KW - BUSINESS education KW - INDUSTRIAL management KW - STUDY & teaching KW - ECONOMIC aspects KW - STUDY & teaching (Graduate) KW - EXPERIENTIAL learning KW - UNITED States Air Force Academy N1 - Accession Number: 95947703; Martin, John A. 1; Green, Steve G. 1; Heppard, Kurt A. 1; Affiliations: 1: Department of Management, United States Air Force Academy, USA; Issue Info: 2013, Vol. 8, p75; Thesaurus Term: INTERNATIONAL business enterprises; Thesaurus Term: BUSINESS education; Thesaurus Term: INDUSTRIAL management; Subject Term: STUDY & teaching; Subject Term: ECONOMIC aspects; Subject Term: STUDY & teaching (Graduate); Subject Term: EXPERIENTIAL learning ; Company/Entity: UNITED States Air Force Academy; NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; NAICS/Industry Codes: 611410 Business and Secretarial Schools; Number of Pages: 14p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=95947703&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - CHAP ID - 2013-20883-008 AN - 2013-20883-008 AU - Jackson, Robert J. AU - Lindsay, Douglas R. AU - Sanders, Joseph E. ED - Graen, George B. ED - Graen, Joan A. ED - Graen, George B., (Ed) ED - Graen, Joan A., (Ed) T1 - The U.S. Air Force approach. T2 - Management of team leadership in extreme context: Defending our homeland, protecting our first responders. T3 - LMX leadership: The series Y1 - 2013/// SP - 113 EP - 133 CY - Charlotte, NC, US PB - IAP Information Age Publishing SN - 978-1-62396-099-5 SN - 978-1-62396-100-8 SN - 978-1-62396-101-5 N1 - Accession Number: 2013-20883-008. Partial author list: First Author & Affiliation: Jackson, Robert J.; Department of Behavioral Sciences & Leadership, US. Release Date: 20141222. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-1-62396-099-5, Paperback; 978-1-62396-100-8, Hardcover; 978-1-62396-101-5, PDF. Language: English. Major Descriptor: Air Force Personnel; Leadership; Military Personnel; Teams. Minor Descriptor: Problem Solving; Social Capital. Classification: Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 21. AB - Team leadership in a wartime military environment is high stakes, demanding, and unforgiving. It requires a unique profile of competencies to be skillful and effective across continuous threats, predictable missions with unpredictable outcomes, ongoing uncertainty, changing conditions, and constantly transitioning alliances. For these circumstances, key competencies are necessary in four areas: (1) a solid intrapersonal core made up of stamina, resilience, and humility; (2) a cognitive cluster of information processing and problem solving capabilities; (3) social capital to engage with and leverage the talents of others; and (4) critical alliances related to the ability to span boundaries to create and gain advantage through strategic relationships. The complex and extensive nature of these capabilities indicates their need to be cultivated, developed, and practiced over time. It is imperative to start early and use advanced experiences such as structured formal education. College programs could be extended to support a broader range of team leadership skills, focusing on the development of wider awareness. This type of curricular design is recommended to others and is used at the U.S. Air Force Academy. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - team leadership KW - unpredictable outcomes KW - Air Force approach KW - problem solving capabilities KW - military personnel KW - 2013 KW - Air Force Personnel KW - Leadership KW - Military Personnel KW - Teams KW - Problem Solving KW - Social Capital KW - 2013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-20883-008&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Dukes, Susan F. AU - Bridges, Elizabeth AU - Johantgen, Meg T1 - Occurrence of Secondary Insults of Traumatic Brain Injury in Patients Transported by Critical Care Air Transport Teams From Iraq/Afghanistan: 2003-2006. JO - Military Medicine JF - Military Medicine Y1 - 2013/01// VL - 178 IS - 1 M3 - Article SP - 11 EP - 17 PB - AMSUS SN - 00264075 AB - Traumatic brain injury patients are susceptible to secondary insults to the injured brain. A retrospective cohort study was conducted to describe the occurrence of secondary insults in 63 combat casualties with severe isolated traumatic brain injury who were transported by the U.S. Air Force Critical Care Air Transport Teams (CCATT) from 2003 through 2006. Data were obtained from the Wartime Critical Care Air Transport Database, which describes the patient's physiological state and care as they are transported across the continuum of care from the area of responsibility (Iraq/Afghanistan) to Germany and the United States. Fifty-three percent of the patients had at least one documented episode of a secondary insult. Hyperthermia was the most common secondary insult and was associated with severity of injury. The hyperthermia rate increased across the continuum, which has implications for en route targeted temperature management. Hypoxia occurred most frequently within the area of responsibility, but was rare during CCATT flights, suggesting that concerns for altitude-induced hypoxia may not be a major factor in the decision when to move a patient. Similar research is needed for polytrauma casualties and analysis of the association between physiological status and care across the continuum and long-term outcomes. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BRAIN -- Wounds & injuries KW - HEAD injuries KW - WAR casualties KW - MILITARY personnel KW - ANOXEMIA N1 - Accession Number: 84643644; Dukes, Susan F. 1; Bridges, Elizabeth 2; Johantgen, Meg 3; Source Information: Jan2013, Vol. 178 Issue 1, p11; Subject: BRAIN -- Wounds & injuries; Subject: HEAD injuries; Subject: WAR casualties; Subject: MILITARY personnel; Subject: ANOXEMIA; Number of Pages: 7p; Document Type: Article L3 - 10.7205/MILMED-D-12-00177 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=84643644&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 108022456 T1 - Occurrence of secondary insults of traumatic brain injury in patients transported by critical care air transport teams from Iraq/Afghanistan: 2003-2006. AU - Dukes SF AU - Bridges E AU - Johantgen M Y1 - 2013/01// N1 - Accession Number: 108022456. Language: English. Entry Date: 20140214. Revision Date: 20150712. Publication Type: Journal Article; research. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services. NLM UID: 2984771R. KW - Ambulances KW - Brain Injuries -- Epidemiology KW - Military Personnel -- Statistics and Numerical Data KW - Adolescence KW - Adult KW - Anoxia -- Epidemiology KW - Prospective Studies KW - Critical Care KW - Female KW - Fever -- Epidemiology KW - Human KW - Hypertension -- Epidemiology KW - Hypotension -- Epidemiology KW - Male KW - Middle Age KW - Retrospective Design KW - Trauma Severity Indices KW - United States KW - Young Adult SP - 11 EP - 17 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 178 IS - 1 CY - Bethesda, Maryland PB - AMSUS AB - Traumatic brain injury patients are susceptible to secondary insults to the injured brain. A retrospective cohort study was conducted to describe the occurrence of secondary insults in 63 combat casualties with severe isolated traumatic brain injury who were transported by the U.S. Air Force Critical Care Air Transport Teams (CCATT) from 2003 through 2006. Data were obtained from the Wartime Critical Care Air Transport Database, which describes the patient's physiological state and care as they are transported across the continuum of care from the area of responsibility (Iraq/Afghanistan) to Germany and the United States. Fifty-three percent of the patients had at least one documented episode of a secondary insult. Hyperthermia was the most common secondary insult and was associated with severity of injury. The hyperthermia rate increased across the continuum, which has implications for en route targeted temperature management. Hypoxia occurred most frequently within the area of responsibility, but was rare during CCATT flights, suggesting that concerns for altitude-induced hypoxia may not be a major factor in the decision when to move a patient. Similar research is needed for polytrauma casualties and analysis of the association between physiological status and care across the continuum and long-term outcomes. SN - 0026-4075 AD - United States Air Force School of Aerospace Medicine, 2510 5th Street, Wright-Patterson AFB, OH 45433, USA. U2 - PMID: 23356112. DO - 10.7205/MILMED-D-12-00177 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=108022456&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - CHAP ID - 2013-30656-001 AN - 2013-30656-001 AU - Jones, Brian L. ED - Moore, Bret A. ED - Barnett, Jeffrey E. ED - Moore, Bret A., (Ed) ED - Barnett, Jeffrey E., (Ed) T1 - Early history of military mental health care. T2 - Military psychologists' desk reference. Y1 - 2013/// SP - 3 EP - 7 CY - New York, NY, US PB - Oxford University Press SN - 978-0-19-992826-2 AD - Jones, Brian L., United States Air Force, 70th Intelligence, Surveillance & Reconnaissance Wing, Fort George G., MD, US N1 - Accession Number: 2013-30656-001. Partial author list: First Author & Affiliation: Jones, Brian L.; United States Air Force, 70th Intelligence, Surveillance & Reconnaissance Wing, MD, US. Release Date: 20140303. Correction Date: 20170112. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 978-0-19-992826-2, Hardcover. Language: English. Major Descriptor: History; Mental Health Services; Military Medical Personnel; Military Psychology; War. Minor Descriptor: Commissioned Officers; Military Personnel; Posttraumatic Stress Disorder. Classification: Professional Psychological & Health Personnel Issues (3400); Military Psychology (3800). Population: Human (10). Location: US. Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 5. AB - Mental health care providers in the military follow an uncommon charge in comparison to their civilian counterparts. Issues such as differing arenas of practice and ethical quandaries only scratch the surface of the complexities found in being a military officer and a mental health care provider. Despite the efforts of military mental health providers and the current federal budgetary emphasis placed on the mental health of military forces and their family members, the state of military mental health care has not always been this robust (Laurence & Matthews, 2012). It is difficult, if not impossible, to discuss the development of mental health care in the military without simultaneously noting that each step was paved during a particular time in this nation's history of war. This chapter provides an overview of the early history of military mental health care, covering all of the major wars from the American revolutionary war through the Global War on Terror. Traumatic stress in war and posttraumatic stress disorder are discussed. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - military KW - history KW - mental health care KW - military officers KW - health care providers KW - military forces KW - wars KW - posttraumatic stress disorder KW - 2013 KW - History KW - Mental Health Services KW - Military Medical Personnel KW - Military Psychology KW - War KW - Commissioned Officers KW - Military Personnel KW - Posttraumatic Stress Disorder KW - 2013 DO - 10.1093/med:psych/9780199928262.003.0001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-30656-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - ABST AU - Pavlova, Evgeniya AU - Coovert, Michael D. AU - Bennett, Winston T1 - Abstract: Trust Development in Computer-Mediated Teams: A Latent Change Score Model. JO - Multivariate Behavioral Research JF - Multivariate Behavioral Research Y1 - 2013/01//Jan/Feb2013 VL - 48 IS - 1 M3 - Abstract SP - 166 EP - 167 SN - 00273171 AB - An abstract of the article "Trust Development in Computer-Mediated Teams: A Latent Change Score Model," by Evgeniya Pavlova and Michael D. Coovert is presented. KW - TEAMS in the workplace KW - TELEMATICS -- Abstracts KW - ABSTRACTS KW - COOVERT, Michael D. N1 - Accession Number: 86448798; Pavlova, Evgeniya 1; Email Address: epavlova@mail.usf.edu; Coovert, Michael D. 1; Bennett, Winston 2; Affiliations: 1: University of South Florida; 2: United States Air Force Research Laboratory; Issue Info: Jan/Feb2013, Vol. 48 Issue 1, p166; Thesaurus Term: TEAMS in the workplace; Subject Term: TELEMATICS -- Abstracts; Subject Term: ABSTRACTS; People: COOVERT, Michael D.; Number of Pages: 2p; Document Type: Abstract L3 - 10.1080/00273171.2013.752265 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=86448798&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - CHAP ID - 2013-30841-091 AN - 2013-30841-091 AU - Foster, Elaine Orabona AU - Roa-Navarrete, Ruth ED - Koocher, Gerald P. ED - Norcross, John C. ED - Greene, Beverly A. ED - Koocher, Gerald P., (Ed) ED - Norcross, John C., (Ed) ED - Greene, Beverly A., (Ed) T1 - Understanding side effects and warnings in psychopharmacology. T2 - Psychologists' desk reference, 3rd ed. Y1 - 2013/// SP - 449 EP - 454 CY - New York, NY, US PB - Oxford University Press SN - 978-0-19-984549-1 N1 - Accession Number: 2013-30841-091. Partial author list: First Author & Affiliation: Foster, Elaine Orabona; USAF, US. Release Date: 20131223. Correction Date: 20160616. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-0-19-984549-1, Hardcover. Language: English. Major Descriptor: Drug Interactions; Drug Therapy; Psychopharmacology; Side Effects (Drug); Warnings. Minor Descriptor: Therapists. Classification: Clinical Psychopharmacology (3340). Population: Human (10); Male (30); Female (40). Age Group: Childhood (birth-12 yrs) (100); Adolescence (13-17 yrs) (200); Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). Page Count: 6. AB - Therapists prescribing psychopharmacologic agents must stay abreast of the ever-growing body of information regarding the use of psychotropic medications, their side effects, their interactions with other drugs, and associated risks. This chapter reviews the common set of variables that must be considered for the safe and effective practice of pharmacotherapy. This review is not exhaustive; rather, it highlights collected information from clinical assessments that can affect the interactions between drug and patient. By understanding these interactions, one can modify treatment regimens in a safe and effective manner based on the unique needs of the patient. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - side effects KW - warnings KW - psychopharmacology KW - drug interactions KW - therapists KW - 2013 KW - Drug Interactions KW - Drug Therapy KW - Psychopharmacology KW - Side Effects (Drug) KW - Warnings KW - Therapists KW - 2013 DO - 10.1093/med:psych/9780199845491.003.0091 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-30841-091&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2013-26113-008 AN - 2013-26113-008 AU - Ree, Malcolm James AU - Teachout, Mark S. AU - Carretta, Thomas R. ED - Svyantek, Daniel J. ED - Mahoney, Kevin T. ED - Svyantek, Daniel J., (Ed) ED - Mahoney, Kevin T., (Ed) T1 - Against all evidence: General and specific ability in human resource management. T2 - Received wisdom, kernels of truth, and boundary conditions in organizational studies. T3 - Research in organizational sciences Y1 - 2013/// SP - 181 EP - 199 CY - Charlotte, NC, US PB - IAP Information Age Publishing SN - 978-1-62396-189-3 SN - 978-1-62396-190-9 SN - 978-1-62396-191-6 N1 - Accession Number: 2013-26113-008. Partial author list: First Author & Affiliation: Ree, Malcolm James; Department of Leadership Studies, Our Lady of the Lake University, San Antonio, TX, US. Release Date: 20151130. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-1-62396-189-3, Paperback; 978-1-62396-190-9, Hardcover; 978-1-62396-191-6, PDF. Language: English. Major Descriptor: Employee Characteristics; Employer Attitudes; Human Resource Management. Minor Descriptor: Experimentation. Classification: Personnel Management & Selection & Training (3620). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 19. AB - For more than 100 years there has been an ongoing dispute about the measurement and utility of general cognitive ability (g) versus specific abilities (s) in human resources management (HRM), particularly for employee selection. The dispute centers around three basic issues: (1) the development and measurement of g versus s, (2) the absolute and relative contributions of general and specific factors to the measurement of abilities, and (3) the utility of these general and specific abilities in HRM in predicting occupational outcomes. The purpose of this chapter is to highlight the empirical research that supports the development, measurement, and predictive utility of g and s, followed by potential reasons that contribute to perpetuating the 'conventional wisdom' and advocating the utility of specific abilities. This chapter will describe what is empirically known, disconfirm popular research and practical beliefs, address leading arguments against g, and present examples of unwarranted conclusions that contribute erroneously to the appeal and popularity of specific abilities. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - employee characteristics KW - human resource management KW - empirical research KW - beliefs KW - 2013 KW - Employee Characteristics KW - Employer Attitudes KW - Human Resource Management KW - Experimentation KW - 2013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-26113-008&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Burns, Hugh T1 - Shane Borrowman, ed. On the Blunt Edge: Technology in Composition's History and Pedagogy. JO - Rhetoric Review JF - Rhetoric Review Y1 - 2013/01// VL - 32 IS - 1 M3 - Book Review SP - 112 EP - 117 SN - 07350198 AB - The article reviews the book "On the Blunt Edge: Technology in Composition's History and Pedagogy," edited by Shane Borrowman. KW - Educational technology KW - Nonfiction KW - Borrowman, Shane KW - On the Blunt Edge: Technology in Composition's History & Pedagogy (Book) N1 - Accession Number: 84342609; Burns, Hugh 1; Affiliations: 1: Texas Woman's University and The United States Air Force Academy; Issue Info: 2013, Vol. 32 Issue 1, p112; Thesaurus Term: Educational technology; Subject Term: Nonfiction; Reviews & Products: On the Blunt Edge: Technology in Composition's History & Pedagogy (Book); People: Borrowman, Shane; Number of Pages: 6p; Document Type: Book Review L3 - 10.1080/07350198.2013.739510 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=84342609&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - CHAP ID - 2013-01015-028 AN - 2013-01015-028 AU - Gluck, Kevin A. AU - Gunzelmann, Glenn ED - Lee, John D. ED - Kirlik, Alex ED - Lee, John D., (Ed) ED - Kirlik, Alex, (Ed) T1 - Computational process modeling and cognitive stressors: Background and prospects for application in cognitive engineering. T2 - The Oxford handbook of cognitive engineering. T3 - Oxford library of psychology Y1 - 2013/// SP - 424 EP - 432 CY - New York, NY, US PB - Oxford University Press SN - 0-19-975718-6 SN - 978-0-19-975718-3 N1 - Accession Number: 2013-01015-028. Partial author list: First Author & Affiliation: Gluck, Kevin A.; Cognitive Models and Agents Branch, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Release Date: 20140512. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 0-19-975718-6, Hardcover; 978-0-19-975718-3, Hardcover. Language: English. Major Descriptor: Cognitive Processes; Human Computer Interaction; Computational Modeling. Minor Descriptor: Cognitive Science; Person Environment Fit; Simulation. Classification: Human Factors Engineering (4010). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 9. AB - Computational process models are implemented in computer code and run over time to simulate phenomena of interest. In cognitive science the phenomena of interest involve human cognitive processes and performance outcome data. Cognitive stressors are temporary circumstances or environmental stimuli that degrade, interfere with, or otherwise negatively impact cognitive processing. The focus of this chapter is the intersection of the methodology of computational process modeling with the phenomenology of cognitive stressors. Part literature review and part prospective commentary, the chapter provides an opportunity to consider the use of formal modeling and simulation methods to explain and predict human performance precisely when it matters most—when the person's cognitive system is stressed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - computational process models KW - cognitive processing KW - environmental stimuli KW - simulation methods KW - cognitive science KW - computer coding KW - 2013 KW - Cognitive Processes KW - Human Computer Interaction KW - Computational Modeling KW - Cognitive Science KW - Person Environment Fit KW - Simulation KW - 2013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-01015-028&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - GEN AU - LAWRENCE, DAVID T1 - David Abrams interviewed by David Lawrence. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2013/01// Y1 - 2013/01// VL - 25 M3 - Interview SP - 1 EP - 10 PB - US Air Force Academy English Department SN - 10466967 AB - An interview with author David Abrams is presented. Abrams talks about his war novel "Fobbit". He comments on the fact that critics see similarities between his work and Heller's classic. He explains why war novels, like those emerging from operations in Iraq, take longer to publish compared to memoirs and journalistic accounts. KW - ABRAMS, David -- Interviews KW - FOBBIT (Book) KW - WAR in literature KW - CRITICISM KW - PUBLISHERS & publishing N1 - Accession Number: 94829670; Source Information: 2013, Vol. 25, p1; Subject Term: ABRAMS, David -- Interviews; Subject Term: FOBBIT (Book); Subject Term: WAR in literature; Subject Term: CRITICISM; Subject Term: PUBLISHERS & publishing; Subject Term: ; Number of Pages: 11p; ; Document Type: Interview; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=94829670&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - PLICHTA, KATHERINE T1 - Remembered and Reimagined: The Literature of War. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2013/01// Y1 - 2013/01// VL - 25 M3 - Book Review SP - 1 EP - 13 PB - US Air Force Academy English Department SN - 10466967 KW - LITERATURE of War, The (Book : Riggs) KW - RIGGS, Thomas KW - WAR in literature KW - NONFICTION N1 - Accession Number: 94829687; Source Information: 2013, Vol. 25, p1; Subject Term: LITERATURE of War, The (Book : Riggs); Subject Term: RIGGS, Thomas; Subject Term: WAR in literature; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 14p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=94829687&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2013-12158-002 AN - 2013-12158-002 AU - Keren, Hila AU - Fux, Michal AU - Mort, Joel AU - Lawson, E. Thomas AU - Eilam, David T1 - Are motor collective rituals as rigid as they seem? A test case of a Zulu wedding dance. JF - Journal of Cognition and Culture JO - Journal of Cognition and Culture Y1 - 2013/// VL - 13 IS - 1-2 SP - 17 EP - 32 CY - United Kingdom PB - Brill Academic Publishers SN - 1567-7095 SN - 1568-5373 AD - Eilam, David, Department of Zoology, Tel-Aviv University, Ramat-Aviv, Israel, 69978 N1 - Accession Number: 2013-12158-002. Partial author list: First Author & Affiliation: Keren, Hila; Department of Zoology, Tel-Aviv University, Ramat-Aviv, Israel. Release Date: 20130617. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Dance; Religion; Religious Practices. Classification: Culture & Ethnology (2930). Population: Human (10); Female (40). Location: South Africa. Methodology: Empirical Study; Qualitative Study; Quantitative Study. References Available: Y. Page Count: 16. Issue Publication Date: 2013. Copyright Statement: Koninklijke Brill NV, Leiden. 2013. AB - Rituals are common in religion, sports, culture and specific life-stages (childhood, parenthood, etc.), raising the question of why being engaged in such activity, what could be its benefit, and how rigid they are. Here we analyzed 19 episodes of a Zulu Umsindo dance performed by 10 women. This ritual comprised a common act, performed in all dance episodes of all women, personal acts performed consistently by one woman but not by the others, and sporadic acts that varied both among and within women. There were significantly more sporadic than personal acts, and more personal than common acts, with only one common act that was performed in all 19 dance episodes. Personal and sporadic acts comprised about 90% of the dance repertoire, attesting a high flexibility in performance. Despite this high flexibility, the dance attained a seemingly rigid form due to three properties: (i) fixed temporal order that was preserved in all the dance episodes; (ii) a common act that was consistently performed by all women; and (iii) a high rate of repetition of the common act. These properties rendered the ritual its rigid form, along with enabling the dancers to display great flexibility in act repertoire. This analysis sheds new light on the content and structure of collective rituals, implicating on the understanding of how social transmission may occur, and giving potential evidence for the Sperberian view on cultural transmission. Finally, the Zulu dance seems to possess a communicative value in group solidarity without a direct involvement of precautionary systems. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - motor collective rituals KW - Zulu wedding dance KW - religion KW - sporadic acts KW - 2013 KW - Dance KW - Religion KW - Religious Practices KW - 2013 DO - 10.1163/15685373-12342082 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-12158-002&site=ehost-live&scope=site UR - eilam@post.tau.ac.il DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-09493-004 AN - 2013-09493-004 AU - Do, James J. AU - Samuels, Steven M. AU - Adkins, Donald J. AU - Clinard, Matthew E. AU - Koveleskie, Aaron J. T1 - Gender bias and pluralistic ignorance in perceptions of fitness assessments. JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2013/01// VL - 25 IS - 1 SP - 23 EP - 35 CY - US PB - Educational Publishing Foundation SN - 0899-5605 SN - 1532-7876 AD - Samuels, Steven M., HQ USAFA/DFBL, USAF Academy, 2354 Fairchild Dr., Suite 6L-101B, CO, US, 80840-6228 N1 - Accession Number: 2013-09493-004. Partial author list: First Author & Affiliation: Do, James J.; Department of Behavioral Sciences and Leadership, United States Air Force Academy, CO, US. Other Publishers: Lawrence Erlbaum; Taylor & Francis. Release Date: 20130325. Correction Date: 20150622. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Physical Fitness; Sex Role Attitudes; Sexism. Minor Descriptor: Testing. Classification: Military Psychology (3800); Sex Roles & Women's Issues (2970). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Understanding Attitudes on Gender and Training; Modern Sexism Scale; General Social Survey; Naval Academy Survey on Attitudes. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 13. Issue Publication Date: Jan, 2013. AB - Two studies examined the relationship between cadets' views toward women, specifically, attitudes about fitness testing at the United States Air Force Academy (USAFA). Cadets completed measures of views toward women in society, in the military, at USAFA, and fitness testing. Results revealed that many male cadets held sexist attitudes of women in all categories. Cadets who held egalitarian views of women in society and in the military were more likely to support equitable fitness standards. Furthermore, cadets' personal viewpoints differed from their perception of the entire cadet population viewpoint, creating an environment of pluralistic ignorance. That is, cadets believed the collective was more sexist than themselves, suggesting that a vocal minority who perpetuate sexist attitudes may hinder changes in culture. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - USAFA KW - fitness test KW - gender bias KW - pluralistic ignorance KW - sexism KW - United States Air Force Academy KW - 2013 KW - Air Force Personnel KW - Physical Fitness KW - Sex Role Attitudes KW - Sexism KW - Testing KW - 2013 DO - 10.1037/h0094754 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-09493-004&site=ehost-live&scope=site UR - steven.samuels@usafa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-20246-004 AN - 2013-20246-004 AU - King, Raymond E. AU - Carretta, Thomas R. AU - Retzlaff, Paul AU - Barto, Erica AU - Ree, Malcolm James AU - Teachout, Mark S. T1 - Standard cognitive psychological tests predict military pilot training outcomes. JF - Aviation Psychology and Applied Human Factors JO - Aviation Psychology and Applied Human Factors Y1 - 2013/// VL - 3 IS - 1 SP - 28 EP - 38 CY - Germany PB - Hogrefe Publishing SN - 2192-0923 SN - 2192-0931 AD - King, Raymond E., HQ AFSEC/SEH, Kirtland AFB, 9700 G Ave SE, NM, US, 87117-5670 N1 - Accession Number: 2013-20246-004. Partial author list: First Author & Affiliation: King, Raymond E.; USAF School of Aerospace Medicine, Wright-Patterson AFB, OH, US. Release Date: 20130610. Correction Date: 20160616. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Cognitive Ability; Military Personnel; Performance; Training. Minor Descriptor: Cognitive Assessment; Statistical Validity. Classification: Tests & Testing (2220); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: Air Force Officer Qualifying Test; Multidimensional Aptitude Battery; Medical Flight Screening Intelligence Tests; MicroCog Test; MicroCog Memory index; Test of Basic Aviation Skills; Minnesota Multiphasic Personality Inventory-2-RF DOI: 10.1037/t15121-000; NEO Personality Inventory-Revised; NEO Personality Inventory DOI: 10.1037/t07564-000; WAIS-R (Wechsler Adult Intelligence Scale-Revised); Wechsler Memory Scale DOI: 10.1037/t27207-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 11. Issue Publication Date: 2013. Publication History: First Posted Date: Jun 3, 2013; Accepted Date: Apr 29, 2013. Copyright Statement: Hogrefe Publishing. 2013. AB - The predictive validity of scores from two cognitive functioning tests, the Multidimensional Aptitude Battery (MAB) and the MicroCog, was examined for initial pilot training performance. In addition to training completion, several training performance criteria were available for graduates: academic grades, daily flying grades, check ride grades, and class rank. Mean score comparisons and correlations in samples of between 5,582 and 12,924 trainees across the two tests showed small but statistically significant relationships with training performance. For example, after correction for range restriction and dichotomization of the criterion, the MAB full-scale IQ score and the MicroCog General Cognitive Functioning score were correlated .29 and .26 respectively with initial pilot training completion. The results pointed to general cognitive ability as the main predictor of training performance. Comparisons with results from studies involving US Air Force pilot aptitude tests showed lower validities for these cognitive functioning tests. This finding likely occurred because the pilot aptitude tests measure additional factors (e.g., aviation knowledge/experience and psychomotor skills) that are predictive of training success and that are not covered by the cognitive functioning tests. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cognitive functioning KW - general cognitive ability KW - pilot performance KW - training criteria KW - psychological tests KW - military pilots KW - 2013 KW - Aircraft Pilots KW - Cognitive Ability KW - Military Personnel KW - Performance KW - Training KW - Cognitive Assessment KW - Statistical Validity KW - 2013 DO - 10.1027/2192-0923/a000040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-20246-004&site=ehost-live&scope=site UR - SkyKing321@aol.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-35227-005 AN - 2012-35227-005 AU - Carretta, Thomas R. T1 - Predictive validity of pilot selection instruments for remotely piloted aircraft training outcome. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2013/01// VL - 84 IS - 1 SP - 47 EP - 53 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Carretta, Thomas R., 711 HPW/RHCI, Area B, Bldg. 146, Rm. 122, Wright-Patterson AFB, OH, US, 45433-7511 N1 - Accession Number: 2012-35227-005. PMID: 23304999 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Carretta, Thomas R.; Air Force Research Laboratory, Wright-Patterson AFB, OH, US. Release Date: 20140331. Correction Date: 20151019. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Job Experience Level; Personnel Selection; Personnel Training; Test Validity. Classification: Tests & Testing (2220); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Medical Flight Screening and Aptitude Test; Air Force Officer Qualifying Test; Test of Basic Aviation Skills; Pilot Candidate Selection Method Measure; Self Description Inventory; Perceptual Motor Test; Basic Attributes Test; Verbal Analogies Test; Arithmetic Reasoning Test; Math Knowledge Test; Instrument Comprehension Measure; Block Counting Measure; Table Reading Measure; Aviation Information Measure; General Science Measure; Rotated Blocks Measure; Hidden Figures Measure; Predator Stick and Rudder Task; Airplane Tracking Task; Horizontal Tracking Task; Word Knowledge Test DOI: 10.1037/t43247-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 7. Issue Publication Date: Jan, 2013. Copyright Statement: The Aerospace Medical Association AB - Introduction: Demand for remotely-piloted aircraft (RPA) support has increased dramatically over the last decade. Initial efforts to meet the demand focused on cross-training experienced manned aircraft pilots and funneling recent Specialized Undergraduate Pilot Training (SUPT) graduates to RPA pilot training. This approach reduced the number of personnel available for manned airframes and is no longer sustainable. In 2009, the USAF established an RPA career field and the Undergraduate RPA Training (URT) course to train officers with no prior flying experience to be RPA pilots. URT selection methods are very similar to those for SUPT. Some important factors for URT applicants are medical flight screening and aptitude tests lAir Force Officer Qualifying Test (AFOQT) and Pilot Candidate Selection Method (PCSM)|. The current study examined the predictive validity of the AFOQT pilot and PCSM composites for URT completion. Method: Subjects were 139 URT students with AFOQT and PCSM scores. The training criterion was URT pass/fail and the pass rate was 74.8%. Results: Both the AFOQT pilot (r = 0.378) and PCSM (r = 0.480) composites demonstrated good predictive validity. Discussion: No minimum qualifying PCSM score exists for URT. Had a minimum PCSM score of 25 been used, the pass rate would have been 80.2%; 12 more eliminees would have been screened out compared with the current AFOQT pilot minimum qualifying score of 25. Although current selection methods are effective, based on results of several RPA job/task analyses, the Air Force is examining the utility of other measures to supplement current methods. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - pilot selection KW - remotely aircraft KW - flying experiences KW - candidate training KW - 2013 KW - Aircraft Pilots KW - Job Experience Level KW - Personnel Selection KW - Personnel Training KW - Test Validity KW - 2013 DO - 10.3357/ASEM.3441.2013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-35227-005&site=ehost-live&scope=site UR - thomas.carretta@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - BOOK ID - 2013-10635-000 AN - 2013-10635-000 AU - Arthur, Winfred Jr. AU - Day, Eric Anthony AU - Bennett, Winston Jr. AU - Portrey, Antoinette M. ED - Arthur, Winfred Jr. ED - Day, Eric Anthony ED - Bennett, Winston Jr. ED - Portrey, Antoinette M. T1 - Individual and team skill decay: The science and implications for practice. T3 - Applied psychology series Y1 - 2013/// CY - New York, NY, US PB - Routledge/Taylor & Francis Group SN - 978-0-415-82193-3 SN - 978-0-415-88578-2 SN - 978-0-203-57607-6 N1 - Accession Number: 2013-10635-000. Partial author list: First Author & Affiliation: Arthur, Winfred Jr.; Department of Psychology, Texas A&M University, College Station, TX, US. Release Date: 20140217. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. ISBN: 978-0-415-82193-3, Paperback; 978-0-415-88578-2, Hardcover; 978-0-203-57607-6, PDF. Language: English. Major Descriptor: Applied Psychology; Industrial and Organizational Psychology. Minor Descriptor: Memory Decay; Society; Teams. Classification: Learning & Memory (2343); Industrial & Organizational Psychology (3600). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). Page Count: 438. AB - The goal of the Applied Psychology series is to create books that exemplify the use of scientific research, theory, and findings to help solve real problems in organizations and society. Arthur et al.'s Individual and Team Skill Decay: The Science and Implications for Practice accomplishes this goal. This volume tackles the tough issues that are involved in understanding how, why, and over what time periods the skills of individuals and teams decay. It pulls together the basic science of skill development and decay with organizational efforts to build and sustain skills, and vividly demonstrates the interplay of science and practice in applying psychology to organizations. The first section of this book introduces key concepts and findings from basic research on the development and assessment of skills, and the changes in these skills over time. A distinguished international team of authors lays out the critical questions being pursued in current research on skill development and decay. The next section examines the development and decay of individual skills in organizational settings, again drawing from broad international perspectives. The third section of this book looks at the definition, development, and decay of skills at the team level of analysis. The transition between individuals and teams changes the definition of what skills actually represent and how they can best be understood, and the comparison between individual and team-level skills discussed in this book represents one of its most distinctive contributions. The final chapter of this book discusses the past, present, and future of research and practice in the area of skill development and decay. Individual and Team Skill Decay: The Science, and Implications for Practice integrates the perspectives of researchers and practitioners in an unusually broad array of settings. The authors include academics, consultants, military researchers, and practitioners in organizations around the world. We are very happy to add Individual and Team Skill Decay: The Science and Implications for Practice to the Applied Psychology series. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - applied psychology KW - team skill decay KW - organizational settings KW - skill development KW - 2013 KW - Applied Psychology KW - Industrial and Organizational Psychology KW - Memory Decay KW - Society KW - Teams KW - 2013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-10635-000&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Ortensie, R. Ray T1 - In a Time of War: The Proud and Perilous Journey of West Point's Class of 2002. JO - Air Power History JF - Air Power History J1 - Air Power History PY - 2012///Winter2012 Y1 - 2012///Winter2012 VL - 59 IS - 4 M3 - Book Review SP - 49 EP - 49 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "In a Time of War: The Proud and Perilous Journey of West Point's Class of 2002," by Bill Murphy Jr. KW - IN a Time of War: The Proud & Perilous Journey of West Point's Class of 2002 (Book) KW - MURPHY, Bill KW - UNITED States Military Academy -- Students KW - NONFICTION N1 - Accession Number: 84452408; Source Information: Winter2012, Vol. 59 Issue 4, p49; Subject Term: IN a Time of War: The Proud & Perilous Journey of West Point's Class of 2002 (Book); Subject Term: MURPHY, Bill; Subject Term: UNITED States Military Academy -- Students; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 1/3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=84452408&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - BLACKHURST, JACK L. AU - GRESHAM, JENNIFER S. AU - STONE, MORLEY O. T1 - The quantified warrior. JO - Armed Forces Journal JF - Armed Forces Journal J1 - Armed Forces Journal PY - 2012/12// Y1 - 2012/12// VL - 150 IS - 5 M3 - Article SP - 14 EP - 32 SN - 1559162X AB - The article discusses a sense-assess-augment framework which was developed to guide the application of the human performance augmentation into systems engineering across the defense services. It states that sensing is the most mature piece of the sense-assess-augment paradigm. The ability to interpret data from multiple individual sensors and merge it into actionable information is reportedly the most difficult of all the steps. KW - MILITARY readiness KW - DEFENSE industries KW - DETECTORS KW - MILITARY engineering KW - SYSTEMS engineering N1 - Accession Number: 84396524; Source Information: Dec2012, Vol. 150 Issue 5, p14; Subject Term: MILITARY readiness; Subject Term: DEFENSE industries; Subject Term: DETECTORS; Subject Term: MILITARY engineering; Subject Term: SYSTEMS engineering; Subject Term: ; Number of Pages: 5p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=84396524&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR T1 - Predicting U.S. Presidential Historical Performance Rankings: Implications for Management Education. AU - Wilhelm, Paul AU - Wilhelm, Jana P. AU - Wilhelm, Timothy G. JO - Competition Forum JF - Competition Forum Y1 - 2012/12// VL - 10 IS - 2 SP - 86 EP - 93 SN - 15452581 N1 - Accession Number: 82608741; Author: Wilhelm, Paul: 1 Author: Wilhelm, Jana P.: 2,3 Author: Wilhelm, Timothy G.: 4 ; Author Affiliation: 1 Kentucky State University: 2 Sullivan University: 3 Bluegrass Community and Technical College: 4 1st Lieutenant, United States Air Force; No. of Pages: 8; Language: English; Publication Type: Article; Update Code: 20121022 N2 - For more than three decades, researchers have tried to identify which variables predict the overall performance of U.S. presidents. A six variable prediction equation has emerged and been replicated repeatedly (Simonton, 2001). Especially significant is the role of intelligence or intellectual brilliance, a variable that has been the most robust predictor of leader performance in a diversity of situations. Also very predictive of performance ratings is the personality measure "openness to experience" which correlated significantly with intellectual brilliance and playing chess. This study confirms that intelligence, as measured by a combination of personal achievements, analysis of a president's interests, scores on the personality measure, openness to experience, IQ and whether they played chess, significantly predicts presidential performance ratings. Party affiliation was unrelated to all variables studied. Management education and bipartisan implications for President Obama, relative to resolving Congressional gridlock, are discussed. ABSTRACT FROM AUTHOR KW - *EDUCATION KW - PRESIDENTS -- Elections KW - PRESIDENTS -- United States KW - ECONOMIC impact KW - OBAMA, Barack, 1961- KW - MANAGEMENT KW - UNITED States KW - Management education KW - Presidential elections UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=82608741&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - VANLANDINGHAM, RACHEL1 T1 - POLITICS OR LAW? THE DUAL NATURE OF THE RESPONSIBILITY TO PROTECT. JO - Denver Journal of International Law & Policy JF - Denver Journal of International Law & Policy J1 - Denver Journal of International Law & Policy PY - 2012///Fall/Winter2012 Y1 - 2012///Fall/Winter2012 VL - 41 IS - 1 CP - 1 M3 - Article SP - 63 EP - 85 SN - 01962035 AB - The article discusses international law, which obligates countries to protect its citizens from the mass violation of human rights and also directs international community to respond in a condition where a states or nation fails to fulfill its sovereign protective responsibility. The article also expands on the transition of a political and moral commitment to a legal rule for the protection of human rights and discusses above issues in relation to the activities of United Nations. KW - Human rights violations KW - International agencies KW - Sovereignty (Political science) KW - International ethics KW - World politics KW - United Nations N1 - Accession Number: 85640251; Authors:VANLANDINGHAM, RACHEL 1; Affiliations: 1: Visiting Assistant Professor, Stetson University College of Law and retired Judge Advocate, United States Air Force. LL.M.; Subject: United Nations; Subject: Human rights violations; Subject: International agencies; Subject: Sovereignty (Political science); Subject: International ethics; Subject: World politics; Number of Pages: 23p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=85640251&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR AU - Schaaf, Christian P AU - Boone, Philip M AU - Sampath, Srirangan AU - Williams, Charles AU - Bader, Patricia I AU - Mueller, Jennifer M AU - Shchelochkov, Oleg A AU - Brown, Chester W AU - Crawford, Heather P AU - Phalen, James A AU - Tartaglia, Nicole R AU - Evans, Patricia AU - Campbell, William M AU - Chun-Hui Tsai, Anne AU - Parsley, Lea AU - Grayson, Stephanie W AU - Scheuerle, Angela AU - Luzzi, Carol D AU - Thomas, Sandra K AU - Eng, Patricia A T1 - Phenotypic spectrum and genotype-phenotype correlations of NRXN1 exon deletions. JO - European Journal of Human Genetics JF - European Journal of Human Genetics Y1 - 2012/12// VL - 20 IS - 12 M3 - Article SP - 1240 EP - 1247 PB - Nature Publishing Group SN - 10184813 AB - Copy number variants (CNVs) and intragenic rearrangements of the NRXN1 (neurexin 1) gene are associated with a wide spectrum of developmental and neuropsychiatric disorders, including intellectual disability, speech delay, autism spectrum disorders (ASDs), hypotonia and schizophrenia. We performed a detailed clinical and molecular characterization of 24 patients who underwent clinical microarray analysis and had intragenic deletions of NRXN1. Seventeen of these deletions involved exons of NRXN1, whereas seven deleted intronic sequences only. The patients with exonic deletions manifested developmental delay/intellectual disability (93%), infantile hypotonia (59%) and ASDs (56%). Congenital malformations and dysmorphic features appeared infrequently and inconsistently among this population of patients with NRXN1 deletions. The more C-terminal deletions, including those affecting the β isoform of neurexin 1, manifested increased head size and a high frequency of seizure disorder (88%) when compared with N-terminal deletions of NRXN1. [ABSTRACT FROM AUTHOR] AB - Copyright of European Journal of Human Genetics is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHENOTYPE KW - EXONS (Genetics) KW - DELETION mutation KW - DEVELOPMENTAL disabilities -- Patients KW - NEUREXINS KW - HUMAN abnormalities KW - SPASMS N1 - Accession Number: 83380688; Schaaf, Christian P 1; Boone, Philip M 1; Sampath, Srirangan 1; Williams, Charles 2; Bader, Patricia I 3; Mueller, Jennifer M 2; Shchelochkov, Oleg A 4; Brown, Chester W 1; Crawford, Heather P 1; Phalen, James A 5; Tartaglia, Nicole R 6; Evans, Patricia 7; Campbell, William M 6; Chun-Hui Tsai, Anne 6; Parsley, Lea 6; Grayson, Stephanie W 8; Scheuerle, Angela 9; Luzzi, Carol D 10; Thomas, Sandra K 11; Eng, Patricia A 1; Source Information: Dec2012, Vol. 20 Issue 12, p1240; Subject: PHENOTYPE; Subject: EXONS (Genetics); Subject: DELETION mutation; Subject: DEVELOPMENTAL disabilities -- Patients; Subject: NEUREXINS; Subject: HUMAN abnormalities; Subject: SPASMS; Number of Pages: 8p; Illustrations: 1 Diagram, 3 Charts, 1 Graph; Document Type: Article L3 - 10.1038/ejhg.2012.95 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=83380688&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Davis, Kevin AU - Fraser, Steve P. AD - US Air Force Academy AD - FL Gulf Coast U T1 - Insuring Defined-Benefit Plan Value: An Examination of the Survivor Benefit Plan (SBP) Decision JO - Financial Services Review JF - Financial Services Review Y1 - 2012///Winter VL - 21 IS - 4 SP - 275 EP - 290 SN - 10570810 N1 - Accession Number: 1350600; Keywords: Retiree; Retirement; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 201302 N2 - The U.S. Military Survivor Benefit Plan (SBP) allows military retirees to protect a portion of their retirement income stream. Specifically, retirees can pay a pre-tax premium from their retirement income to insure up to 55% of the retirement income stream. Two recent changes have dramatically improved the value of the plan. In this study, we construct a Monte Carlo simulation model to describe the distributions and implied discount rate for SBP participants. Our model demonstrates that the program is quite lucrative for most male retirees. In contrast, the program is less rewarding for female retirees, especially when they are somewhat younger than their spouse. Retirees and their financial planners can use our results to make more informed retirement planning decisions. KW - Household Saving; Personal Finance D14 KW - Social Security and Public Pensions H55 KW - Retirement; Retirement Policies J26 KW - Nonwage Labor Costs and Benefits; Retirement Plans; Private Pensions J32 KW - Public Sector Labor Markets J45 L3 - http://www2.stetson.edu/fsr/index.html UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1350600&site=ehost-live&scope=site UR - http://www2.stetson.edu/fsr/index.html DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Chen, Fei AU - Cao, Yongcan AU - Ren, Wei T1 - Distributed Average Tracking of Multiple Time-Varying Reference Signals With Bounded Derivatives. JO - IEEE Transactions on Automatic Control JF - IEEE Transactions on Automatic Control J1 - IEEE Transactions on Automatic Control PY - 2012/12// Y1 - 2012/12// VL - 57 IS - 12 M3 - Article SP - 3169 EP - 3174 SN - 00189286 AB - We present a distributed discontinuous control algorithm for a team of agents to track the average of multiple time-varying reference signals with bounded derivatives. We use tools from nonsmooth analysis to analyze the stability of the system. For time-invariant undirected connected network topologies, we prove that the states of all agents will converge to the average of the time-varying reference signals with bounded derivatives in finite time provided that the control gain is properly chosen. The validity of this result is also established for scenarios with switching undirected connected network topologies. For time-invariant directed network topologies with a directed spanning tree, we show that all agents will still reach a consensus in finite time, but the convergent value is generally not the average of the time-varying reference signals with bounded derivatives. Simulation examples are presented to show the validity of the above results. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Automatic Control is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIAGENT systems KW - HEURISTIC algorithms KW - INTELLIGENT agents (Computer software) KW - ELECTRIC network topology KW - NONSMOOTH optimization KW - NICKEL N1 - Accession Number: 83709152; Source Information: Dec2012, Vol. 57 Issue 12, p3169; Subject Term: MULTIAGENT systems; Subject Term: HEURISTIC algorithms; Subject Term: INTELLIGENT agents (Computer software); Subject Term: ELECTRIC network topology; Subject Term: NONSMOOTH optimization; Subject Term: NICKEL; Subject Term: ; Number of Pages: 6p; ; Document Type: Article; L3 - 10.1109/TAC.2012.2199176 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=83709152&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Harris, T. Robert AU - Priyadarshi, Shivam AU - Melamed, Samson AU - Ortega, Carlos AU - Manohar, Rajit AU - Dooley, Steven R. AU - Kriplani, Nikhil M. AU - Davis, W. Rhett AU - Franzon, Paul D. AU - Steer, Michael B. T1 - A Transient Electrothermal Analysis of Three-Dimensional Integrated Circuits. JO - IEEE Transactions on Components, Packaging & Manufacturing Technology JF - IEEE Transactions on Components, Packaging & Manufacturing Technology Y1 - 2012/12// VL - 2 IS - 4 M3 - Article SP - 660 EP - 667 SN - 21563950 AB - A transient electrothermal simulation of a 3-D integrated circuit (3DIC) is reported that uses dynamic modeling of the thermal network and hierarchical electrothermal simulation. This is a practical alternative to full transistor electrothermal simulations that are computationally prohibitive. Simulations are compared to measurements for a token-generating asynchronous 3DIC clocking at a maximum frequency of 1 GHz. The electrical network is based on computationally efficient electrothermal macromodels of standard and custom cells. These are linked in a physically consistent manner with a detailed thermal network extracted from an OpenAccess layout file. Coupled with model-order reduction techniques, hierarchical dynamic electrothermal simulation of large 3DICs is shown to be tractable, yielding spatial and temporal selected transistor-level thermal profiles. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Components, Packaging & Manufacturing Technology is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTEGRATED circuits KW - MATHEMATICAL models KW - THERMAL management (Electronic packaging) KW - TRANSISTORS KW - COMPUTER simulation KW - ELECTRIC networks KW - HEATING KW - 3DIC KW - Analytical models KW - Computational modeling KW - electrothermal effects KW - Heating KW - Integrated circuit modeling KW - Thermal analysis KW - thermal management KW - Thermal resistance KW - Transient analysis N1 - Accession Number: 74090946; Harris, T. Robert 1; Priyadarshi, Shivam 1; Melamed, Samson 1; Ortega, Carlos 2; Manohar, Rajit 2; Dooley, Steven R. 3; Kriplani, Nikhil M. 1; Davis, W. Rhett 1; Franzon, Paul D. 1; Steer, Michael B. 1; Affiliations: 1: Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC, USA; 2: Department of Electrical and Computer Engineering, Cornell University, Ithaca, NY, USA; 3: Sensors Directorate Department, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Issue Info: Dec2012, Vol. 2 Issue 4, p660; Thesaurus Term: INTEGRATED circuits; Thesaurus Term: MATHEMATICAL models; Thesaurus Term: THERMAL management (Electronic packaging); Subject Term: TRANSISTORS; Subject Term: COMPUTER simulation; Subject Term: ELECTRIC networks; Subject Term: HEATING; Author-Supplied Keyword: 3DIC; Author-Supplied Keyword: Analytical models; Author-Supplied Keyword: Computational modeling; Author-Supplied Keyword: electrothermal effects; Author-Supplied Keyword: Heating; Author-Supplied Keyword: Integrated circuit modeling; Author-Supplied Keyword: Thermal analysis; Author-Supplied Keyword: thermal management; Author-Supplied Keyword: Thermal resistance; Author-Supplied Keyword: Transient analysis; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TCPMT.2011.2178414 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=74090946&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Schadler, Linda AU - Nelson, J. AU - Calebrese, Chris AU - Travelpiece, Alisha AU - Schweickart, Daniel T1 - High temperature breakdown strength and voltage endurance characterization of nanofilled polyamideimide. JO - IEEE Transactions on Dielectrics & Electrical Insulation JF - IEEE Transactions on Dielectrics & Electrical Insulation Y1 - 2012/12// VL - 19 IS - 6 M3 - Article SP - 2090 EP - 2101 SN - 10709878 AB - For high temperature wire enamel application, the dielectric properties of nanoscale silica and alumina filled polyamideimide were characterized as a function of filler loading, and temperature. It was found that although the dc breakdown strength improved for both composite systems, only the alumina also exhibited an increase in ac breakdown strength. In addition, the voltage endurance at elevated temperature in both a needle/plate and twisted wire geometry was improved over a narrow range of filler loading (5-7.5 wt%). At room temperature, pulsed electroacoustic analysis (PEA) data does not indicate any difference in space charge buildup in the composite for fields up to 25 kV/mm over a period of 2 h. This is in contrast to other nanocomposite systems, which tend to show mitigation of space charge buildup with the addition of nanoparticles. Dielectric spectroscopy shows that the addition of nanoparticles increases the real permittivity above that expected for volumetric mixing rules. This enhancement is associated with high effective permittivity interfacial areas. No systematic changes in losses in the frequency range between 10-4 and 105 Hz were seen. The results suggest that carrier scattering is the primary mechanism leading to the improved breakdown strength. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Dielectrics & Electrical Insulation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH temperatures KW - ELECTRIC discharges KW - ELECTRIC potential KW - IMIDES KW - DIELECTRICS KW - SILICA KW - ALUMINUM oxide KW - PERMITTIVITY KW - dielectric breakdown KW - Dielectric materials KW - Dispersion KW - Electric breakdown KW - Loading KW - Permittivity KW - Plastics KW - polyamideimide KW - Temperature KW - Testing KW - voltage endurance N1 - Accession Number: 84675259; Schadler, Linda 1; Nelson, J. 1; Calebrese, Chris 1; Travelpiece, Alisha 1; Schweickart, Daniel 2; Affiliations: 1: Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA; 2: Air Force Research Laboratory, 1950 Fifth Street; MS: AFRL/RQPE, Wright Patterson AFB, OH 45433; Issue Info: Dec2012, Vol. 19 Issue 6, p2090; Subject Term: HIGH temperatures; Subject Term: ELECTRIC discharges; Subject Term: ELECTRIC potential; Subject Term: IMIDES; Subject Term: DIELECTRICS; Subject Term: SILICA; Subject Term: ALUMINUM oxide; Subject Term: PERMITTIVITY; Author-Supplied Keyword: dielectric breakdown; Author-Supplied Keyword: Dielectric materials; Author-Supplied Keyword: Dispersion; Author-Supplied Keyword: Electric breakdown; Author-Supplied Keyword: Loading; Author-Supplied Keyword: Permittivity; Author-Supplied Keyword: Plastics; Author-Supplied Keyword: polyamideimide; Author-Supplied Keyword: Temperature; Author-Supplied Keyword: Testing; Author-Supplied Keyword: voltage endurance; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TDEI.2012.6396969 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=84675259&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Kambour, Kenneth AU - Rosen, Nadav AU - Kouhestani, Camron AU - Nguyen, Duc AU - Mayberry, Clay AU - Devine, Roderick A. B. AU - Kumar, A. AU - Chen, C.-C. AU - Li, Gang AU - Yang T1 - Modeling of the X-irradiation Response of the Carrier Relaxation Time in P3HT:PCBM Organic-Based Photocells. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2012/12//Dec2012 Part 1 VL - 59 IS - 6 M3 - Article SP - 2902 EP - 2908 SN - 00189499 AB - Initial experimental work has demonstrated that x-ray bombardment of organic-based photocells (specifically P3HT:PCBM-based) leads to a reduction in the open-circuit voltage (Voc) without apparent change in the carrier relaxation time. The variation of Voc was suggested to be due to the injection and trapping of holes near the anode, which resulted in a decrease in the built-in potential. We have extended the experimental measurements to higher total dose (\sim 1300~\ krad(\ SiO2)). Using standard inorganic modeling tools, a device model of the organic cell has been developed and predictions made. These predictions have been compared to the results of the previous and new experimental measurements and they demonstrate reasonable agreement between the two, thereby supporting the initial charge buildup hypothesis. Questions about the origin and behavior of the photo-carrier relaxation arise. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Irradiation KW - Solar cells KW - Photoconductive cells KW - Anodes KW - X-rays KW - Photovoltaic cells KW - Simulation KW - solar cells KW - x-rays N1 - Accession Number: 84360314; Kambour, Kenneth 1; Rosen, Nadav 2; Kouhestani, Camron 3; Nguyen, Duc 3; Mayberry, Clay 2; Devine, Roderick A. B. 4; Kumar, A. 5; Chen, C.-C. 5; Li, Gang 5; Yang 5; Affiliations: 1: SAIC, Kirtland AFB, New Mexico, USA; 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico, USA; 3: COSMIAC, Kirtland AFB, New Mexico, USA; 4: Think Strategically, Kirtland AFB, New Mexico, USA; 5: UCLA,; Issue Info: Dec2012 Part 1, Vol. 59 Issue 6, p2902; Thesaurus Term: Irradiation; Thesaurus Term: Solar cells; Subject Term: Photoconductive cells; Subject Term: Anodes; Subject Term: X-rays; Author-Supplied Keyword: Photovoltaic cells; Author-Supplied Keyword: Simulation; Author-Supplied Keyword: solar cells; Author-Supplied Keyword: x-rays; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TNS.2012.2222666 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=84360314&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Weaver, B. D. AU - Martin, P. A. AU - Boos, J. B. AU - Cress, C. D. T1 - Displacement Damage Effects in AlGaN/GaN High Electron Mobility Transistors. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2012/12//Dec2012 Part 1 VL - 59 IS - 6 M3 - Article SP - 3077 EP - 3080 SN - 00189499 AB - We present the results of a radiation damage experiment on Alx\rm Ga1-{\rm x}{\rm N/GaN} high electron mobility transistors. The basic mechanism underlying the observed high radiation tolerance appears to be a strong internal piezoelectric field near the two-dimensional electron gas that causes scattered carriers to be reinjected. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Radiation injuries KW - Irradiation KW - High electron mobility transistors KW - Piezoelectricity KW - Electron gas KW - Gallium nitride KW - Displacement damage KW - gallium nitride KW - HEMTs KW - high electron mobility transistors KW - proton irradiation KW - Proton radiation effects N1 - Accession Number: 84360329; Weaver, B. D. 1; Martin, P. A. 2; Boos, J. B. 1; Cress, C. D. 1; Affiliations: 1: Naval Research Laboratory (NRL), Washington, DC, USA; 2: Air Force Research Laboratory, Kirtland Air Force Base,; Issue Info: Dec2012 Part 1, Vol. 59 Issue 6, p3077; Thesaurus Term: Radiation injuries; Thesaurus Term: Irradiation; Subject Term: High electron mobility transistors; Subject Term: Piezoelectricity; Subject Term: Electron gas; Subject Term: Gallium nitride; Author-Supplied Keyword: Displacement damage; Author-Supplied Keyword: gallium nitride; Author-Supplied Keyword: HEMTs; Author-Supplied Keyword: high electron mobility transistors; Author-Supplied Keyword: proton irradiation; Author-Supplied Keyword: Proton radiation effects; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TNS.2012.2224371 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=84360329&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hammack, Stephen AU - Lee, Tonghun AU - Carter, Campbell T1 - Microwave Plasma Enhancement of Various Flame Geometries at Atmospheric Pressure. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2012/12//Dec2012 Part 1 Y1 - 2012/12//Dec2012 Part 1 VL - 40 IS - 12 M3 - Article SP - 3139 EP - 3146 SN - 00933813 AB - A plasma-coupled methane–air flame is produced at atmospheric pressure by a microwave plasma source utilizing a tunable waveguide. Laser diagnostics are used to examine the direct-coupled, plasma-ignited, and sustained flame, for multiple flame types and nozzle geometries. OH radical number densities are quantified using planar laser-induced fluorescence and temperature measured by Rayleigh scattering thermometry. Premixed and nonpremixed flames are studied using both solid and hollow inner conductors in the plasma-applicating nozzle. The plasma source is powered by a continuous 2.45-GHz magnetron producing 360 W of power. Plasma power is controlled by adjusting the reflected microwave power, measured at a dummy load attached to a circulator. Maximum OH radical number densities were quantified as approximately (3 - 5) \times 10^16\ \cm^-3 for plasma powers around 100 W, with small variation between configurations. The maximum temperatures occurred in the nonpremixed flame, where the plasma is generated in air, reaching values of 3500 K. Temperatures are lower, peaking at 2000 K, when the plasma is generated at the air–fuel boundary or the air-premixed boundary through use of the hollow inner conductor. Additional parameters are adjusted, including flow rates, power level, and equivalence ratio, and the effects are discussed. Nonpremixed configurations are ill suited for flame enhancement, whereas a premixed flow through the hollow electrode best demonstrates nonthermal plasma-assisted combustion. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVE plasmas KW - WAVEGUIDES KW - RAYLEIGH scattering KW - NOZZLES KW - MAGNETRONS KW - ELECTRODES N1 - Accession Number: 84188844; Source Information: Dec2012 Part 1, Vol. 40 Issue 12, p3139; Subject Term: MICROWAVE plasmas; Subject Term: WAVEGUIDES; Subject Term: RAYLEIGH scattering; Subject Term: NOZZLES; Subject Term: MAGNETRONS; Subject Term: ELECTRODES; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.1109/TPS.2012.2195034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=84188844&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Knapp, Kenneth J. AU - Ferrante, Claudia J. T1 - Policy Awareness, Enforcement and Maintenance: Critical to Information Security Effectiveness in Organizations. JO - Journal of Management Policy & Practice JF - Journal of Management Policy & Practice Y1 - 2012/12// VL - 13 IS - 5 M3 - Article SP - 66 EP - 80 SN - 19138067 AB - To minimize the probability of costly information security incidents, organizations should be highly motivated to communicate, enforce and maintain security policies. With insight from the workplace deviance and organizational learning literature, we investigate a model exploring the impact of policy awareness, enforcement and maintenance on the effectiveness of information security programs in organizations. Utilizing a sample of 297 certified information security professionals located in the United States, we found support for the model as well as a second-order version of a modified structure. Before concluding, we discuss our results, study limitations and offer implications for research and practice. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Management Policy & Practice is the property of North American Business Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANIZATIONAL effectiveness KW - ORGANIZATIONAL learning KW - DATA security KW - COMMUNICATION in organizations KW - UNITED States N1 - Accession Number: 85163694; Knapp, Kenneth J. 1; Ferrante, Claudia J. 2; Affiliations: 1: The University of Tampa; 2: United States Air Force Academy; Issue Info: 2012, Vol. 13 Issue 5, p66; Thesaurus Term: ORGANIZATIONAL effectiveness; Thesaurus Term: ORGANIZATIONAL learning; Thesaurus Term: DATA security; Thesaurus Term: COMMUNICATION in organizations; Subject: UNITED States; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); NAICS/Industry Codes: 541519 Other Computer Related Services; Number of Pages: 15p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=85163694&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Kenneth, Capt T1 - Bayesian Estimates of the Rideshare Reliability Effect. JO - Military Operations Research JF - Military Operations Research J1 - Military Operations Research PY - 2012/12// Y1 - 2012/12// VL - 17 IS - 4 M3 - Article SP - 39 EP - 49 SN - 10825983 AB - The article focuses on the use of Bayesian parametric regression model to evaluate the launch of rideshare launch strategy of satellites. It mentions that Bayesian parametric regression model helps in understanding the association between launch vehicle reliability and ridesharing additional payloads. It also states that rideshare launch strategy increases the risk of launch failure of the satellite. KW - BAYESIAN analysis KW - RIDESHARING services KW - LAUNCH vehicles (Astronautics) KW - STATISTICAL reliability KW - REGRESSION analysis N1 - Accession Number: 85234869; Source Information: 2012, Vol. 17 Issue 4, p39; Subject Term: BAYESIAN analysis; Subject Term: RIDESHARING services; Subject Term: LAUNCH vehicles (Astronautics); Subject Term: STATISTICAL reliability; Subject Term: REGRESSION analysis; Subject Term: ; Number of Pages: 11p; ; Document Type: Article; L3 - 10.5711/1082598317439 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=85234869&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 108087070 T1 - Ethical considerations in embedding a surgeon in a military or civilian tactical team. AU - Kaplan, Lewis J. AU - Siegel, Mark D. AU - Eastman, Alexander L AU - Flynn, Lisa M. AU - Rosenbaum, Stanley H. AU - Cone, David C. AU - Blake, David P. AU - Mulhern, Jonathan Y1 - 2012/12//2012 Dec N1 - Accession Number: 108087070. Language: English. Entry Date: 20130208. Revision Date: 20150820. Publication Type: Journal Article; tables/charts. Journal Subset: Allied Health; Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; Public Health; USA. Special Interest: Emergency Care. NLM UID: 8918173. KW - Ethics KW - Multidisciplinary Care Team KW - Personnel Recruitment -- Evaluation KW - Surgeons -- Evaluation KW - Emergency Medical Services KW - Military Personnel KW - Police KW - Prehospital Care KW - Travel KW - Triage -- Methods KW - Weapons SP - 583 EP - 588 JO - Prehospital & Disaster Medicine JF - Prehospital & Disaster Medicine JA - PREHOSPITAL DISASTER MED VL - 27 IS - 6 PB - Cambridge University Press SN - 1049-023X AD - Department of Surgery, Yale University School of Medicine, 330 Cedar Street, BB-310, New Haven, CT 06520, USA; North Haven/North Branford Police Departments, Special Weapons and Tactics Team, North Haven/North Branford, CT, USA; Lewis.Kaplan@yale.edu AD - Department of Medicine, Yale University School of Medicine, New Haven, CT, USA AD - The University of Texas Southwestern School Medical Center, Department of Surgery; The Dallas Police Department, Dallas, TX, USA AD - Department of Surgery, Wayne State University, Detroit, MI, USA AD - Department of Anesthesiology, Yale University School of Medicine, New Haven, CT, USA AD - Department of Emergency Medicine, Yale University School of Medicine, New Haven, CT, USA AD - United States Air Force, Wright Patterson Air Force Base, Ohio, USA AD - North Haven Police Department, North Haven, CT, USA U2 - PMID: 22985714. DO - 10.1017/S1049023X12001112 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=108087070&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 108092184 T1 - An Examination of Salient, Non-Monetary, Factors Influencing Performance in Public Sector Organizations: A Conceptual Model. AU - Jordan, Mark H. AU - Lindsay, Douglas R. AU - Schraeder, Mike Y1 - 2012///Winter2012 N1 - Accession Number: 108092184. Language: English. Entry Date: 20130107. Revision Date: 20150712. Publication Type: Journal Article; tables/charts. Journal Subset: Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Health Services Administration; Peer Reviewed; USA. NLM UID: 0367056. KW - Models, Theoretical KW - Job Performance KW - Public Sector KW - Work Environment KW - Employee Attitudes KW - Productivity KW - Organizational Change KW - Support, Psychosocial KW - Commitment SP - 661 EP - 684 JO - Public Personnel Management JF - Public Personnel Management JA - PUBLIC PERS MANAGE VL - 41 IS - 4 CY - Thousand Oaks, California PB - Sage Publications Inc. AB - Public sector organizations are experiencing incredible pressures to become more efficient, while simultaneously maintaining a high level of responsiveness to public constituents. These pressures are translated into intense demands placed on public sector employees and their collective performance. The purpose of this article is to examine important perceptions about key organizational phenomena and related employee attitudes in the context of performance in public sector organizations. Specifically, the implications of perceived organizational support (POS) and perceived psychological contract support (PSCS) are explored, leading to the development of a conceptual model which embodies non-task behaviors of organizational citizenship behaviors and counterproductive work behaviors, as well as cynicism and embeddedness as salient attitudes that should be considered in conjunction with POS and PSCS as antecedents of job performance in public sector organizations. SN - 0091-0260 AD - Full Professor of Management in the Mike Cottrell School of Business at North Georgia College & State University AD - Deputy Department Head and Senior Military Faculty for the Department of Behavioral Sciences & Leadership at the United States Air Force Academy AD - Associate Professor of Management at Troy University-Montgomery Campus UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=108092184&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Jordan, Mark H. AU - Lindsay, Douglas R. AU - Schraeder, Mike T1 - An Examination of Salient, Non-Monetary, Factors Influencing Performance in Public Sector Organizations: A Conceptual Model. JO - Public Personnel Management JF - Public Personnel Management Y1 - 2012///Winter2012 VL - 41 IS - 4 M3 - Article SP - 661 EP - 684 PB - Sage Publications Inc. SN - 00910260 AB - Public sector organizations are experiencing incredible pressures to become more efficient, while simultaneously maintaining a high level of responsiveness to public constituents. These pressures are translated into intense demands placed on public sector employees and their collective performance. The purpose of this article is to examine important perceptions about key organizational phenomena and related employee attitudes in the context of performance in public sector organizations. Specifically, the implications of perceived organizational support (POS) and perceived psychological contract support (PSCS) are explored, leading to the development of a conceptual model which embodies non-task behaviors of organizational citizenship behaviors and counterproductive work behaviors, as well as cynicism and embeddedness as salient attitudes that should be considered in conjunction with POS and PSCS as antecedents of job performance in public sector organizations. [ABSTRACT FROM AUTHOR] AB - Copyright of Public Personnel Management is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMPLOYEES -- Attitudes KW - LABOR productivity KW - MATHEMATICAL models KW - ORGANIZATIONAL change KW - WORK environment KW - PUBLIC sector KW - JOB performance KW - COMMITMENT (Psychology) KW - THEORY KW - SOCIAL support N1 - Accession Number: 84615101; Jordan, Mark H. 1; Email Address: mhjordan@northgeorgia.edu; Lindsay, Douglas R. 2; Email Address: douglas.lindsay@usafa.edu; Schraeder, Mike 3; Email Address: mschraeder@troy.edu; Affiliations: 1: Full Professor of Management in the Mike Cottrell School of Business at North Georgia College & State University; 2: Deputy Department Head and Senior Military Faculty for the Department of Behavioral Sciences & Leadership at the United States Air Force Academy; 3: Associate Professor of Management at Troy University-Montgomery Campus; Issue Info: Winter2012, Vol. 41 Issue 4, p661; Thesaurus Term: EMPLOYEES -- Attitudes; Thesaurus Term: LABOR productivity; Thesaurus Term: MATHEMATICAL models; Thesaurus Term: ORGANIZATIONAL change; Thesaurus Term: WORK environment; Thesaurus Term: PUBLIC sector; Thesaurus Term: JOB performance; Subject Term: COMMITMENT (Psychology); Subject Term: THEORY; Subject Term: SOCIAL support; NAICS/Industry Codes: 624190 Other Individual and Family Services; Number of Pages: 24p; Illustrations: 1 Diagram; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=84615101&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Buss, James A. AU - Watts, Michael F. AU - Barrows, Stephen P. AU - Brown, Marvin T. AU - Yi Man Li, Rita AU - Xinyue Ye T1 - Book Reviews. JO - Review of Social Economy JF - Review of Social Economy Y1 - 2012/12// VL - 70 IS - 4 M3 - Article SP - 508 EP - 531 PB - Routledge SN - 00346764 N1 - Accession Number: 90147831; Buss, James A. 1; Watts, Michael F. 2; Barrows, Stephen P. 3; Brown, Marvin T. 4; Yi Man Li, Rita 5; Xinyue Ye 6; Affiliations: 1: Fairfield University, USA; 2: University of Cambridge; 3: United States Air Force Academy, USA; 4: University of San Francisco; 5: Hong Kong Shue Yan University; 6: Bowling Green State University, USA; Issue Info: Dec2012, Vol. 70 Issue 4, p508; Number of Pages: 24p; Document Type: Article L3 - 10.1080/00346764.2011.592339 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=90147831&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR T1 - Swimming Overuse Injuries Associated With Triathlon Training. AU - Bales, James AU - Bales, Kann JO - Sports Medicine & Arthroscopy Review JF - Sports Medicine & Arthroscopy Review Y1 - 2012/12// VL - 20 IS - 4 SP - 196 EP - 199 SN - 10628592 N1 - Accession Number: 83761227; Author: Bales, James: 1 Author: Bales, Kann: 1,2 ; Author Affiliation: 1 US Air Force Academy, Colorado Springs, CO: 2 JKB Medical Exams, Monument, CO.; No. of Pages: 4; Language: English; Publication Type: Article; Update Code: 20121217 N2 - The article focuses on the swimming overuse injuries that occur during the training of athletes for triathlon, sports competition. It includes information on swimming overuse injuries in triathletes which involves shoulder pain that occur due to repetitive overhead motion resulting in microtrauma, mechanical impingement or generalized laxity. KW - *SWIMMING injuries KW - *OVERUSE injuries KW - *TRIATHLON KW - *JOINTS (Anatomy) -- Hypermobility KW - *SHOULDER -- Wounds & injuries KW - *SPORTS competitions KW - *SWIMMING -- Training KW - glenohumeral instability KW - impingement KW - overuse injury KW - rotator cuff tendinitis KW - swimming KW - triathlon UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=83761227&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 108076438 T1 - Swimming overuse injuries associated with triathlon training. AU - Bales J AU - Bales K Y1 - 2012/12// N1 - Accession Number: 108076438. Language: English. Entry Date: 20130524. Revision Date: 20150712. Publication Type: Journal Article. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Sports Medicine. NLM UID: 9315689. KW - Cumulative Trauma Disorders -- Etiology KW - Shoulder Injuries KW - Shoulder Pain -- Etiology KW - Swimming KW - Cumulative Trauma Disorders -- Complications KW - Exercise Physiology KW - Joint Instability -- Etiology KW - Joint Instability -- Therapy KW - Osteoarthritis -- Etiology KW - Osteoarthritis -- Therapy KW - Shoulder Impingement Syndrome -- Etiology KW - Shoulder Impingement Syndrome -- Therapy KW - Tendinopathy -- Etiology KW - Tendinopathy -- Therapy SP - 196 EP - 199 JO - Sports Medicine & Arthroscopy Review JF - Sports Medicine & Arthroscopy Review JA - SPORTS MED ARTHROSC REV VL - 20 IS - 4 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 1062-8592 AD - US Air Force Academy, Colorado Springs, CO tJKB Medical Exams, Monument, CO. U2 - PMID: 23147088. DO - 10.1097/JSA.0b013e318261093b UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=108076438&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Training on a Knife's Edge: How to Balance Triathlon Training to Prevent Overuse Injuries. AU - Bales, James AU - Bales, Kann JO - Sports Medicine & Arthroscopy Review JF - Sports Medicine & Arthroscopy Review Y1 - 2012/12// VL - 20 IS - 4 SP - 214 EP - 216 SN - 10628592 N1 - Accession Number: 83761230; Author: Bales, James: 1 Author: Bales, Kann: 2 ; Author Affiliation: 1 US Air Force Academy, Colorado Springs, CO: 2 JKB Medical Exams, Monument, CO; No. of Pages: 3; Language: English; Publication Type: Article; Update Code: 20121217 N2 - The article focuses on overuse injuries in athletes participating in triathlon sports championship. It informs about overuse injuries that occur in athletes due to overtraining in swimming, cycling and running at the sports competition. It includes suggestion for reallocation of balance between the disciplines with emphasis on swimming to prevent the overuse injuries. KW - *OVERUSE injuries KW - *PREVENTION KW - *OVERTRAINING KW - *PHYSICAL training & conditioning KW - *SWIMMING injuries KW - *CYCLING accidents KW - *TRIATHLON KW - biking KW - overtraining KW - overuse injury KW - running KW - swimming KW - triathlon UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=83761230&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 108076440 T1 - Training on a Knife's Edge: How to Balance Triathlon Training to Prevent Overuse Injuries. AU - Bales J AU - Bales K Y1 - 2012/12// N1 - Accession Number: 108076440. Language: English. Entry Date: 20130524. Revision Date: 20150712. Publication Type: Journal Article. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Sports Medicine. NLM UID: 9315689. KW - Cycling KW - Cumulative Trauma Disorders -- Prevention and Control KW - Physical Education and Training KW - Running KW - Swimming KW - Cumulative Trauma Disorders -- Etiology SP - 214 EP - 216 JO - Sports Medicine & Arthroscopy Review JF - Sports Medicine & Arthroscopy Review JA - SPORTS MED ARTHROSC REV VL - 20 IS - 4 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 1062-8592 AD - US Air Force Academy, Colorado Springs, CO tJKB Medical Exams, Monument, CO. U2 - PMID: 23147091. DO - 10.1097/JSA.0b013e318261ec58 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=108076440&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Triathlon: How to Mentally Prepare for the Big Race. AU - Bales, James AU - Bales, Karrn JO - Sports Medicine & Arthroscopy Review JF - Sports Medicine & Arthroscopy Review Y1 - 2012/12// VL - 20 IS - 4 SP - 217 EP - 219 SN - 10628592 N1 - Accession Number: 83761231; Author: Bales, James: 1 Author: Bales, Karrn: 2 ; Author Affiliation: 1 US Air Force Academy: 2 JKB Medical Exams, Monument, CO; No. of Pages: 3; Language: English; Publication Type: Article; Update Code: 20121217 N2 - The article focuses on the mental preparations of the athletes participating in the triathlon sports competitions. It informs about the need of appropriate mental planning that should be carried out during training for cycling, swimming and running. It also informs about the need of nutrition, imaging and anticipation of the race for avoiding of anxiousness. KW - *ATHLETES -- Psychology KW - *TRIATHLON KW - *CYCLING -- Training KW - *SWIMMING -- Training KW - *RUNNING -- Training KW - *ANXIETY KW - biking KW - mental preparation KW - race tactics KW - run KW - swim KW - triathlon UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=83761231&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 108076441 T1 - Triathlon: how to mentally prepare for the big race. AU - Bales J AU - Bales K Y1 - 2012/12// N1 - Accession Number: 108076441. Language: English. Entry Date: 20130524. Revision Date: 20150712. Publication Type: Journal Article. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Sports Medicine. NLM UID: 9315689. KW - Athletic Performance -- Psychosocial Factors KW - Cycling -- Psychosocial Factors KW - Mental Processes KW - Running -- Psychosocial Factors KW - Swimming -- Psychosocial Factors KW - Anxiety -- Psychosocial Factors SP - 217 EP - 219 JO - Sports Medicine & Arthroscopy Review JF - Sports Medicine & Arthroscopy Review JA - SPORTS MED ARTHROSC REV VL - 20 IS - 4 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 1062-8592 AD - US Air Force Academy tJKB Medical Exams, Monument, CO. U2 - PMID: 23147092. DO - 10.1097/JSA.0b013e31825efdc5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=108076441&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Conner, Kenneth R.1,2 AU - McCarthy, Michael D.3 AU - Bajorska, Alina4 AU - Caine, Eric D.1,2 AU - Tu, Xin M.5 AU - Knox, Kerry L.1,2 T1 - Mood, Anxiety, and Substance-Use Disorders and Suicide Risk in a Military Population Cohort. JO - Suicide & Life-Threatening Behavior JF - Suicide & Life-Threatening Behavior J1 - Suicide & Life-Threatening Behavior PY - 2012/12// Y1 - 2012/12// VL - 42 IS - 6 CP - 6 M3 - Article SP - 699 EP - 708 SN - 03630234 AB - There are meager prospective data from nonclinical samples on the link between anxiety disorders and suicide or the extent to which the association varies over time. We examined these issues in a cohort of 309,861 U.S. Air Force service members, with 227 suicides over follow-up. Mental disorder diagnoses including anxiety, mood, and substance-use disorders ( SUD) were based on treatment encounters. Risk for suicide associated with anxiety disorders were lower compared with mood disorders and similar to SUD. Moreover, the associations between mood and anxiety disorders with suicide were greatest within a year of treatment presentation. [ABSTRACT FROM AUTHOR] KW - Anxiety disorders KW - Substance-induced disorders KW - Suicide -- Research KW - Mental illness KW - United States. Air Force N1 - Accession Number: 83927894; Authors:Conner, Kenneth R. 1,2; McCarthy, Michael D. 3; Bajorska, Alina 4; Caine, Eric D. 1,2; Tu, Xin M. 5; Knox, Kerry L. 1,2; Affiliations: 1: Department of Psychiatry, University of Rochester Medical Center; 2: VISN2 Center of Excellence for Suicide Prevention, Canandaigua VA Medical Center; 3: United States Air Force, AF Pentagon; 4: Department of Community and Preventive Medicine, University of Rochester Medical Center; 5: Department of Biostatistics, University of Rochester Medical Center; Subject: Anxiety disorders; Subject: Substance-induced disorders; Subject: Suicide -- Research; Subject: United States. Air Force; Subject: Mental illness; Number of Pages: 10p; Illustrations: 4 Charts; Record Type: Article L3 - 10.1111/j.1943-278X.2012.00125.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=83927894&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR ID - 2013-33438-017 AN - 2013-33438-017 AU - Perlovsky, Leonid AU - Ilin, Roman T1 - Brain. Conscious and unconscious mechanisms of cognition, emotions, and language. JF - Brain Sciences JO - Brain Sciences JA - Brain Sci Y1 - 2012/12// VL - 2 IS - 4 SP - 790 EP - 834 CY - Switzerland PB - Multidisciplinary Digital Publishing Institute SN - 2076-3425 AD - Perlovsky, Leonid, Athinoula A. Martinos Center for Biomedical Imaging, Harvard University, Charlestown, MA, US, 02129 N1 - Accession Number: 2013-33438-017. PMID: 24961270 Partial author list: First Author & Affiliation: Perlovsky, Leonid; Athinoula A. Martinos Center for Biomedical Imaging, Harvard University, Charlestown, MA, US. Release Date: 20131111. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cognition; Consciousness States; Emotions; Language. Classification: Human Experimental Psychology (2300). Population: Human (10). Methodology: Literature Review. References Available: Y. Page Count: 45. Issue Publication Date: Dec, 2012. Publication History: First Posted Date: Dec 18, 2012; Accepted Date: Dec 12, 2012; Revised Date: Dec 6, 2012; First Submitted Date: Sep 25, 2012. Copyright Statement: This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). The authors; licensee MDPI, Basel, Switzerland. 2012. AB - Conscious and unconscious brain mechanisms, including cognition, emotions and language are considered in this review. The fundamental mechanisms of cognition include interactions between bottom-up and top-down signals. The modeling of these interactions since the 1960s is briefly reviewed, analyzing the ubiquitous difficulty: incomputable combinatorial complexity (CC). Fundamental reasons for CC are related to the Gödel’s difficulties of logic, a most fundamental mathematical result of the 20th century. Many scientists still 'believed' in logic because, as the review discusses, logic is related to consciousness; non-logical processes in the brain are unconscious. CC difficulty is overcome in the brain by processes 'from vague-unconscious to crisp-conscious' (representations, plans, models, concepts). These processes are modeled by dynamic logic, evolving from vague and unconscious representations toward crisp and conscious thoughts. We discuss experimental proofs and relate dynamic logic to simulators of the perceptual symbol system. 'From vague to crisp' explains interactions between cognition and language. Language is mostly conscious, whereas cognition is only rarely so; this clarifies much about the mind that might seem mysterious. All of the above involve emotions of a special kind, aesthetic emotions related to knowledge and to cognitive dissonances. Cognition-language-emotional mechanisms operate throughout the hierarchy of the mind and create all higher mental abilities. The review discusses cognitive functions of the beautiful, sublime, music. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - consciousness KW - cognition KW - emotions KW - language KW - 2012 KW - Cognition KW - Consciousness States KW - Emotions KW - Language KW - 2012 U1 - Sponsor: AFOSR, US. Recipients: No recipient indicated DO - 10.3390/brainsci2040790 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-33438-017&site=ehost-live&scope=site UR - roman.ilin@hanscom.af.mil UR - leonid@seas.harvard.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Beblo, Richard AU - Joo, James AU - Smyers, Brian AU - Reich, Gregory T1 - Design, modeling, and optimization of a thermally activated reconfigurable wing system. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2012/11/15/ VL - 23 IS - 17 M3 - Article SP - 1987 EP - 2002 SN - 1045389X AB - Reconfigurable structures such as morphing aircraft generally require an on-board energy source to function. At high speeds, however, frictional heating generated at the nose of a morphing aircraft can provide a large amount of thermal energy during a short period of time. This thermal energy can be collected, transferred, and utilized to reconfigure the aircraft. Direct utilization of thermal energy has the ability to significantly decrease or eliminate the losses associated with converting thermal energy to other forms, such as electric. The following work describes possible system designs and components that can be utilized to transfer the thermal energy harvested at the nose of the aircraft to internal components for direct thermal actuation of a reconfigurable wing structure. Previously reported topology optimized heat collectors, vehicle trajectories, and the deployment mechanism are combined with the presented analytical model of a heat pipe for a system level model used to optimize the system based on weight and the desired wing deployment time. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WING-warping (Aerodynamics) KW - THERMAL conductivity KW - SHAPE memory alloys KW - HEAT pipes KW - HEAT transfer KW - ENERGY harvesting KW - heat pipes KW - morphing aircraft KW - Shape memory polymer N1 - Accession Number: 83003806; Beblo, Richard 1; Joo, James 2; Smyers, Brian 2; Reich, Gregory 2; Affiliations: 1: Aerospace Mechanics Division of UDRI, University of Dayton Research Institute, Dayton, OH, USA; 2: Aerospace Systems Directorate within AFRL, Air Force Research Laboratory, Dayton, OH, USA; Issue Info: 11/15/2012, Vol. 23 Issue 17, p1987; Subject Term: WING-warping (Aerodynamics); Subject Term: THERMAL conductivity; Subject Term: SHAPE memory alloys; Subject Term: HEAT pipes; Subject Term: HEAT transfer; Subject Term: ENERGY harvesting; Author-Supplied Keyword: heat pipes; Author-Supplied Keyword: morphing aircraft; Author-Supplied Keyword: Shape memory polymer; Number of Pages: 16p; Document Type: Article; Full Text Word Count: 8953 L3 - 10.1177/1045389X12457256 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=83003806&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Hoff, Brad W. AU - Greenwood, Andrew D. AU - Mardahl, Peter J. AU - Haworth, Michael D. T1 - All Cavity-Magnetron Axial Extraction Technique. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2012/11/10/Nov2012 Part 3 Y1 - 2012/11/10/Nov2012 Part 3 VL - 40 IS - 11 M3 - Article SP - 3046 EP - 3051 SN - 00933813 AB - A compact axial \pi-mode extraction scheme, which is based on a patent by Greenwood, is demonstrated in conjunction with the UM/L-3 relativistic magnetron using the particle-in-cell code ICEPIC. Cases utilizing Greenwood's extraction technique were compared with power extraction using traditional radial waveguides. Average extracted power values in all simulated axial cases were found to be within +/-6.5% of the radial cases. Cases utilizing 85 ^\circ and 90^\circ sector waveguides were found to have efficiencies up to ten percentage points higher than the radial case. The best performing case was found to use a set of three axially oriented 90 ^\circ sector waveguides, shorted on the upstream side, with the short located 15 cm from the center of the magnetron apertures. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - AXIAL flow KW - EXTRACTION techniques KW - WAVEGUIDES KW - RADIO frequency N1 - Accession Number: 83467338; Source Information: Nov2012 Part 3, Vol. 40 Issue 11, p3046; Subject Term: MAGNETRONS; Subject Term: AXIAL flow; Subject Term: EXTRACTION techniques; Subject Term: WAVEGUIDES; Subject Term: RADIO frequency; Subject Term: ; Number of Pages: 6p; ; Document Type: Article; L3 - 10.1109/TPS.2012.2217758 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=83467338&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - MASON, ROBERT B. AU - CLARK, SARAH AU - KLINGENBERG, MELISSA AU - BERMAN, ELIZABETH AU - VOEVODIN, NATASHA T1 - ALTERNATIVES TO DICHROMATE SEALER IN ANODIZING OPERATIONS. JO - Metal Finishing JF - Metal Finishing Y1 - 2012/11/02/Fall2012 Supplement VL - 110 IS - 9A M3 - Article SP - 372 EP - 383 SN - 00260576 AB - Ogden Air Logistics Center (OO-ALC) is the primary facility within the United States Air Force for maintaining and overhauling aircraft landing gear. Aluminum landing gear components are anodized at OO-ALC to provide enhanced corro-sion resistance, paint adhesion, and wear resistance; a sodium dichromate seal-ing operation usually completes the anodizing process. During sealing, the pores of the anodized (oxide) layer are hydrated, which fills the pores and provides improved corrosion resistance. However, this sealer contains hexavalent chromi-um, which is listed on the Environmental Protection Agency's list of industrial toxic chemicals that are targeted for voluntary reduction or elimination. The spec-ification that outlines the sodium dichromate sealing process delineates three alternative processes that are approved for use: 1) boiling de-ionized water, 2) cobalt acetate, and 3) nickel acetate. While some research to support the use of these and other sealing processes has been gathered under past efforts, additional work must be conducted to fully integrate non-chromate sealers into OO-ALC's anodizing operations. To meet this need, the Air Force Research Laboratory tasked Concurrent Technologies Corporation to identify viable alternatives to the sodium dichromate sealer, conduct testing on these alternatives, and recommend the most promising sealer(s) for implementation based on the test results. This paper will describe the requirements for anodizing and sealing operations with-in OO-ALC, as well as the sealing technologies that are available and a path for-ward to demonstrate/validate the most promising alternatives for the specific needs and applications of OO-ALC. [ABSTRACT FROM AUTHOR] AB - Copyright of Metal Finishing is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES KW - SURFACE sealers KW - SODIUM dichromate KW - METALS -- Anodic oxidation KW - LANDING gear KW - ALUMINUM KW - CORROSION resistant materials KW - REQUIREMENTS engineering KW - UNITED States. Air Force N1 - Accession Number: 84694166; MASON, ROBERT B. 1; CLARK, SARAH 1; KLINGENBERG, MELISSA 1; BERMAN, ELIZABETH 2; VOEVODIN, NATASHA 3; Affiliations: 1: Technologies Corporation, Largo, Fla., Dayton, Ohio, Johnstown, Pa; 2: United States Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio; 3: United States Air Force Research Laboratory/University of Dayton Research Institute Dayton, Ohio; Issue Info: Fall2012 Supplement, Vol. 110 Issue 9A, p372; Thesaurus Term: AIRPLANES; Subject Term: SURFACE sealers; Subject Term: SODIUM dichromate; Subject Term: METALS -- Anodic oxidation; Subject Term: LANDING gear; Subject Term: ALUMINUM; Subject Term: CORROSION resistant materials; Subject Term: REQUIREMENTS engineering ; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 332813 Electroplating, Plating, Polishing, Anodizing, and Coloring; NAICS/Industry Codes: 928110 National Security; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=84694166&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Anderson, James W. T1 - 7 Deadly Scenarios: A Military Futurist Explores War in the 21st Century. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2012/11//Nov/Dec2012 Y1 - 2012/11//Nov/Dec2012 VL - 26 IS - 6 M3 - Book Review SP - 182 EP - 183 PB - Superintendent of Documents SN - 1555385X AB - The article reviews the book "7 Deadly Scenarios: A Military Futurist Explores War in the 21st Century" by Andrew F. Krepinevich. KW - SEVEN Deadly Scenarios: A Military Futurist Explores War in the 21st Century (Book) KW - KREPINEVICH, Andrew F. KW - WAR KW - NONFICTION N1 - Accession Number: 87572302; Source Information: Nov/Dec2012, Vol. 26 Issue 6, p182; Subject Term: SEVEN Deadly Scenarios: A Military Futurist Explores War in the 21st Century (Book); Subject Term: KREPINEVICH, Andrew F.; Subject Term: WAR; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=87572302&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Fagin, Barry AU - Skrien, Dale T1 - Debugging on the Shoulders of Giants: Von Neumann's Programs 65 Years Later. JO - Computer (00189162) JF - Computer (00189162) J1 - Computer (00189162) PY - 2012/11// Y1 - 2012/11// VL - 45 IS - 11 M3 - Article SP - 59 EP - 68 SN - 00189162 AB - A study that examined and executed the programs John von Neumann wrote for the IAS machine reveals time-tested truths about computer architecture, side effects, instruction set design, and automatic programming—truths all foreseen by von Neumann and his team more than 50 years ago. [ABSTRACT FROM PUBLISHER] AB - Copyright of Computer (00189162) is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VON Neumann, John, 1903-1957 KW - COMPUTER architecture KW - AUTOMATIC programming (Computer science) KW - COMPUTER input-output equipment KW - SET design KW - COMPUTER programming N1 - Accession Number: 83467384; Source Information: Nov2012, Vol. 45 Issue 11, p59; Subject Term: VON Neumann, John, 1903-1957; Subject Term: COMPUTER architecture; Subject Term: AUTOMATIC programming (Computer science); Subject Term: COMPUTER input-output equipment; Subject Term: SET design; Subject Term: COMPUTER programming; Subject Term: ; Number of Pages: 10p; ; Document Type: Article; L3 - 10.1109/MC.2012.69 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=83467384&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ozbolat, Ibrahim T. AU - Dababneh, Amer AU - Elgaali, Omer AU - Yahui Zhang AU - Marlere, Timothy AU - Turek, Steven T1 - A Model Based Enterprise Approach in Electronics Manufacturing. JO - Computer-Aided Design & Applications JF - Computer-Aided Design & Applications Y1 - 2012/11// VL - 9 IS - 6 M3 - Article SP - 847 EP - 856 SN - 16864360 AB - Electromagnetic compatibility and overheating are two key issues in printed circuit board (PCB) manufacturing. Due to design and manufacturing limitations, the Department of Defense (DoD) suppliers put tremendous efforts on testing physical prototypes of PCBs. In this work, we developed a model-based interactive and 3D environment, the predictive environment for visualization of electromechanical virtual validation (PREVIEW), to test and analyze the virtual performance of PCBs, which aids designers assessing manufacturability of PCBs virtually prior to developing a physical prototype. Firstly, a thermal simulation module is developed and integrated into PREVIEW to analyze thermal performance of PCBs. Secondly; electromagnetic compatibility is visualized through simulation of 3D electromagnetic field and noise emission. [ABSTRACT FROM AUTHOR] AB - Copyright of Computer-Aided Design & Applications is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BUSINESS enterprises KW - MATHEMATICAL models KW - ELECTRONICS manufacturing KW - SUPPLIERS KW - PROTOTYPES KW - ELECTROMAGNETIC compatibility KW - PRINTED circuits KW - ELECTROMAGNETIC fields KW - electronics manufacturing KW - model based enterprise KW - printed circuit boards N1 - Accession Number: 95410314; Ozbolat, Ibrahim T. 1; Email Address: ibrahim-ozbolat@uiowa.edu; Dababneh, Amer 1; Email Address: amer-dababneh@uiowa.edu; Elgaali, Omer 1; Email Address: omer-omer@uiowa.edu; Yahui Zhang 1; Email Address: yahui-zhang@uiowa.edu; Marlere, Timothy 1; Turek, Steven 2; Email Address: Steven.Turek@wpafb.af.mil; Affiliations: 1: University of Iowa; 2: Air Force Research Laboratory; Issue Info: 2012, Vol. 9 Issue 6, p847; Thesaurus Term: BUSINESS enterprises; Thesaurus Term: MATHEMATICAL models; Thesaurus Term: ELECTRONICS manufacturing; Thesaurus Term: SUPPLIERS; Thesaurus Term: PROTOTYPES; Subject Term: ELECTROMAGNETIC compatibility; Subject Term: PRINTED circuits; Subject Term: ELECTROMAGNETIC fields; Author-Supplied Keyword: electronics manufacturing; Author-Supplied Keyword: model based enterprise; Author-Supplied Keyword: printed circuit boards; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334418 Printed Circuit Assembly (Electronic Assembly) Manufacturing; NAICS/Industry Codes: 334412 Bare Printed Circuit Board Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; Number of Pages: 10p; Illustrations: 6 Color Photographs, 1 Diagram; Document Type: Article L3 - 10.3722/cadaps.2012.847-856 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=95410314&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Iramnaaz, I. AU - Schellevis, H. AU - Rejaei, B. AU - Fitch, R. AU - Zhuang, Y. T1 - Self-Biased Low Loss Conductor Featured With Skin Effect Suppression for High Quality RF Passives. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2012/11// VL - 48 IS - 11 M3 - Article SP - 4139 EP - 4142 SN - 00189464 AB - We present experimental data for artificial metaconductors exhibiting skin effect suppression at microwave frequencies. The metaconductor consists of a stack comprising twelve periods of alternating ferromagnetic (Permalloy) and normal metal (Cu) layers. Near the effective antiferromagnetic resonant frequency the average in-plane magnetic permeability of the stack approaches zero, leading to an increase in the skin depth. Compared to a Cu-based device, up to 70% loss reduction has been achieved by a metaconductor based coplanar wave guide at \sim10 GHz without changing the propagation wavelength. Moreover, unlike conventional magnetic devices, no external magnetic bias is required due to the large magnetic anisotropy present in the ferromagnetic layers. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductors KW - SKIN effect (Electricity) KW - MICROWAVES KW - FERROMAGNETIC materials KW - ANTIFERROMAGNETISM KW - FERROMAGNETIC resonance KW - THIN films -- Magnetic properties KW - METAMATERIALS -- Magnetic properties KW - Coplanar wave guide KW - ferromagnetic resonance KW - magnetic thin film KW - metamaterial KW - radio frequency N1 - Accession Number: 82708578; Iramnaaz, I. 1; Schellevis, H. 2; Rejaei, B. 3; Fitch, R. 4; Zhuang, Y. 5; Affiliations: 1: $^{1}$ Department of Electrical Engineering,, Wright State University,, Dayton,, OH, USA; 2: $^{2}$ Department of Electrical Engineering,, Delft University of Technology,, Delft,, The Netherlands; 3: $^{3}$ Department of Electrical Engineering,, Sharif University of Technology,, Tehran,, Iran; 4: $^{4}$Sensors Directorate, Air Force Research Laboratory,, Wright-Patterson AFB,, OH, USA; 5: Department of Electrical Engineering, Wright State University, Dayton, OH, USA; Issue Info: Nov2012, Vol. 48 Issue 11, p4139; Subject Term: ELECTRIC conductors; Subject Term: SKIN effect (Electricity); Subject Term: MICROWAVES; Subject Term: FERROMAGNETIC materials; Subject Term: ANTIFERROMAGNETISM; Subject Term: FERROMAGNETIC resonance; Subject Term: THIN films -- Magnetic properties; Subject Term: METAMATERIALS -- Magnetic properties; Author-Supplied Keyword: Coplanar wave guide; Author-Supplied Keyword: ferromagnetic resonance; Author-Supplied Keyword: magnetic thin film; Author-Supplied Keyword: metamaterial; Author-Supplied Keyword: radio frequency; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TMAG.2012.2200660 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=82708578&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR T1 - Endovascular management of axillo-subclavian arterial injury: A review of published experience AU - DuBose, Joseph J. AU - Rajani, Ravi AU - Gilani, Ramy AU - Arthurs, Zachary A. AU - Morrison, Jonathan J. AU - Clouse, William D. AU - Rasmussen, Todd E. JO - Injury JF - Injury Y1 - 2012/11// VL - 43 IS - 11 SP - 1785 EP - 1792 SN - 00201383 N1 - Accession Number: 80182201; Author: DuBose, Joseph J.: 1 email: jjd3c@yahoo.com. Author: Rajani, Ravi: 2 Author: Gilani, Ramy: 3 Author: Arthurs, Zachary A.: 4 Author: Morrison, Jonathan J.: 5 Author: Clouse, William D.: 6 Author: Rasmussen, Todd E.: 5 ; Author Affiliation: 1 University of Maryland Medical System, R Adams Cowley Shock Trauma Center, United States Air Force Baltimore Center for the Sustainment of Trauma and Readiness Skills (CSTARS), United States: 2 Division of Vascular Surgery, Department of Surgery, Emory University School of Medicine, United States: 3 Division of Vascular Surgery and Endovascular Therapy of the Michael E. DeBakey, Department of Surgery at Baylor College of Medicine, United States: 4 San Antonio Military Medical Complex, Fort Sam Houston, TX, United States: 5 United States Army Institute for Surgical Research, Fort Sam Houston, TX, United States: 6 David Grant Medical Center, Travis Air Force Base, CA, United States; No. of Pages: 8; Language: English; Publication Type: Article; Update Code: 20120930 N2 - Abstract: Background: The role of endovascular treatment for vascular trauma, including injury to the subclavian and axillary arteries, continues to evolve. Despite growing experience with the utilization of these techniques in the setting of artherosclerotic and aneurysmal disease, published reports in traumatic subclavian and axillary arterial injuries remain confined to sporadic case reports and case series. Methods: We conducted a review of the medical literature from 1990 to 2012 using Pubmed and OVID Medline databases to search for all reports documenting the use of endovascular stenting for the treatment of subclavian or axillary artery injuries. Thirty-two published reports were identified. Individual manuscripts were analysed to abstract data regarding mechanism, location and type of injury, endovascular technique and endograft type utilized, follow-up, and radiographic and clinical outcomes. Results: The use of endovascular stenting for the treatment of subclavian (150) or axillary (10) artery injuries was adequately described for only 160 patients from 1996 to the present. Endovascular treatment was employed after penetrating injury (56.3%; 29 GSW; 61 SW), blunt trauma (21.3%), iatrogenic catheter-related injury (21.8%) and surgical injury (0.6%). Injuries treated included pseudoaneurysm (77), AV fistula (27), occlusion (16), transection (8), perforation (22), dissection (6), or other injuries otherwise not fully described (4). Initial endovascular stent placement was successful in 96.9% of patients. Radiographic and clinical follow-up periods ranging from hospital discharge to 70 months revealed a follow-up patency of 84.4%. No mortalities related to endovascular intervention were reported. New neurologic deficits after the use of endovascular modalities were reported in only one patient. Conclusion: Endovascular treatment of traumatic subclavian and axillary artery injuries continues to evolve. Early results are promising, but experience with this modality and data on late follow-up remain limited. Additional multicenter prospective study and capture of data for these patients is warranted to further define the role of this treatment modality in the setting of trauma. Copyright &y& Elsevier KW - *BLOOD-vessels KW - *VASCULAR diseases KW - *ANEURYSMS KW - *MEDICAL radiography KW - ENDOSCOPIC surgery KW - SUBCLAVIAN artery KW - TREATMENT KW - OUTCOME assessment (Medical care) KW - Calmodulin KW - Chlorpromazine KW - Leaf senescence KW - Salt stress KW - Sweet potato UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=80182201&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 104384767 T1 - Endovascular management of axillo-subclavian arterial injury: a review of published experience. AU - DuBose JJ AU - Rajani R AU - Gilani R AU - Arthurs ZA AU - Morrison JJ AU - Clouse WD AU - Rasmussen TE Y1 - 2012/11// N1 - Accession Number: 104384767. Corporate Author: Endovascular Skills for Trauma and Resuscitative Surgery Working Group. Language: English. Entry Date: 20130322. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Biomedical; Continental Europe; Europe; Peer Reviewed. Special Interest: Emergency Care. NLM UID: 0226040. KW - Axillary Artery -- Injuries KW - Axillary Artery -- Surgery KW - Subclavian Artery -- Injuries KW - Subclavian Artery -- Surgery KW - Surgery, Cardiovascular -- Methods KW - Wounds, Penetrating -- Surgery KW - Adolescence KW - Adult KW - Aged KW - Aged, 80 and Over KW - Axillary Artery -- Radiography KW - Blood Vessel Prosthesis KW - Catheterization -- Methods KW - Child KW - Female KW - Male KW - Middle Age KW - Stents -- Statistics and Numerical Data KW - Subclavian Artery -- Radiography KW - Treatment Outcomes KW - Wounds, Penetrating -- Radiography KW - Young Adult SP - 1785 EP - 1792 JO - Injury JF - Injury JA - INJURY VL - 43 IS - 11 CY - New York, New York PB - Elsevier Science SN - 0020-1383 AD - University of Maryland Medical System, R Adams Cowley Shock Trauma Center, United States Air Force Baltimore Center for the Sustainment of Trauma and Readiness Skills, United States: jjd3c@yahoo.com U2 - PMID: 22921384. DO - 10.1016/j.injury.2012.08.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104384767&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Stanford, Bret AU - Kurdi, Mohammad AU - Beran, Philip AU - McClung, Aaron T1 - Shape, Structure, and Kinematic Parameterization of a Power-Optimal Hovering Wing. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2012/11//Nov/Dec2012 Y1 - 2012/11//Nov/Dec2012 VL - 49 IS - 6 M3 - Article SP - 1687 EP - 1699 SN - 00218669 AB - In this paper, we investigate the aeroelastic hovering motions of a highly flexible flapping wing. It is desired to parameterize the wing shape, structural composition, and kinematic hovering motions, and then minimize the peak power required during the stroke, subject to trim and mechanical failure constraints. The aeroelastic model couples a nonlinear three-dimensional beam model to a quasi-steady blade element aerodynamic model, which is then solved in an implicit time-marching manner until the response becomes time-periodic. Sub-iterations are used within each time step to accommodate various physical nonlinearities. Gradients of the response with respect to the disparate design variables are computed analytically for optimization. Power-optimal flapping configurations are found to exploit interdependencies among the three types of design variables to effectively tailor the aeroelastic response. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - AEROELASTICITY KW - AERODYNAMICS KW - NONLINEAR theories KW - MATHEMATICAL analysis N1 - Accession Number: 84520355; Source Information: Nov/Dec2012, Vol. 49 Issue 6, p1687; Subject Term: AIRPLANE wings; Subject Term: AEROELASTICITY; Subject Term: AERODYNAMICS; Subject Term: NONLINEAR theories; Subject Term: MATHEMATICAL analysis; Subject Term: ; Number of Pages: 13p; ; Document Type: Article; L3 - 10.2514/1.C031094 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=84520355&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Morgan, Philip E. AU - Visbal, Miguel R. T1 - Hybrid Reynolds-Averaged Navier-Stokes/Large-Eddy Simulation Investigating Control of Flow over a Turret. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2012/11//Nov/Dec2012 Y1 - 2012/11//Nov/Dec2012 VL - 49 IS - 6 M3 - Article SP - 1700 EP - 1717 SN - 00218669 AB - This investigation explores the flow over a turret at M∞ = 0.4 and ReD = 2.4 x 106 using both hybrid Reynolds-averaged Navier-Stokes/implicit large-eddy simulation (RANS/ILES) and k-∈-based unsteady Reynolds-averaged Navier-Stokes (URANS) simulations. Additional hybrid RANS/ILES simulations were performed to compare the effectiveness of two steady-suction flow control approaches. The hybrid RANS/ILES computations were obtained using a well-validated high-order Navier-Stokes flow solver employing a fourth-order compact spatial discretization in conjunction with a sixth-order low-pass spatial filter. The URANS simulations were performed using a second- order version of the flow solver and k-∈ turbulence model. The turret configuration consisted of a half-foot radius hemisphere atop a 4.5-in.-tall circular cylinder base. Both steady suction through a slot and a leeward porous turret shell were explored as forms of flow control. Time-mean hybrid RANS/ILES results, obtained on a 23 x 106-point mesh, compared reasonably well to experimental pressure coefficient and velocity profiles for the baseline flow. The separation angle was predicted to within 3 deg of experimental observations. The instantaneous hybrid RANS/ILES solutions display complex three-dimensional flow phenomena in the wake of the turret that the k-∈ URANS model was unable to resolve. Both steady-suction flow control approaches successfully attached the flow over most the turret dome and significantly reduced the size of the wake. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REYNOLDS number KW - AERODYNAMICS KW - NAVIER-Stokes equations KW - LARGE eddy simulation models KW - TURBULENCE N1 - Accession Number: 84520356; Source Information: Nov/Dec2012, Vol. 49 Issue 6, p1700; Subject Term: REYNOLDS number; Subject Term: AERODYNAMICS; Subject Term: NAVIER-Stokes equations; Subject Term: LARGE eddy simulation models; Subject Term: TURBULENCE; Subject Term: ; Number of Pages: 18p; ; Document Type: Article; L3 - 10.2514/1.C031239 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=84520356&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - PILCHAK, A.L. AU - SHIVELEY, A.R. AU - SHADE, P.A. AU - TILEY, J.S. AU - BALLARD, D.L. T1 - Using cross-correlation for automated stitching of two-dimensional multi-tile electron backscatter diffraction data. JO - Journal of Microscopy JF - Journal of Microscopy Y1 - 2012/11// VL - 248 IS - 2 M3 - Article SP - 172 EP - 186 SN - 00222720 AB - A method for automatically aligning consecutive data sets of large, two-dimensional multi-tile electron backscatter diffraction (EBSD) scans with high accuracy was developed. The method involved first locating grain and phase boundaries within search regions containing overlapping data in adjacent scan tiles, and subsequently using cross-correlation algorithms to determine the relative position of the individual scan tiles which maximizes the fraction of overlapping boundaries. Savitzky-Golay filtering in two dimensions was used to estimate the background, which was then subtracted from the cross-correlation to enhance the peak signal in samples with a high density of interfaces. The technique was demonstrated on data sets with a range of interface densities. The equations were implemented as enhancements to a recently published open source code for stitching of multi-tile EBSD data sets. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microscopy is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CROSS correlation (Mathematics) KW - ELECTRON diffraction KW - BACKSCATTERING KW - SCANNING electron microscopy KW - DIRECTIONAL stitching KW - TILES KW - INTERFACES (Physical sciences) KW - cross-correlation KW - EBSD KW - SEM N1 - Accession Number: 82604965; PILCHAK, A.L. 1,2; SHIVELEY, A.R. 1,2,3; SHADE, P.A. 1,2; TILEY, J.S. 1; BALLARD, D.L. 1; Source Information: Nov2012, Vol. 248 Issue 2, p172; Subject: CROSS correlation (Mathematics); Subject: ELECTRON diffraction; Subject: BACKSCATTERING; Subject: SCANNING electron microscopy; Subject: DIRECTIONAL stitching; Subject: TILES; Subject: INTERFACES (Physical sciences); Author-Supplied Keyword: cross-correlation; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: SEM; Number of Pages: 15p; Document Type: Article L3 - 10.1111/j.1365-2818.2012.03661.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=82604965&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Park, M. AU - Krishnamoorthy, K. AU - Darbha, S. AU - Chandler, P. AU - Pachter, M. T1 - State partitioning based linear program for stochastic dynamic programs: An invariance property JO - Operations Research Letters JF - Operations Research Letters Y1 - 2012/11// VL - 40 IS - 6 M3 - Article SP - 487 EP - 491 SN - 01676377 AB - Abstract: A common approximate dynamic programming method entails state partitioning and the use of linear programming, i.e., the state-space is partitioned and the optimal value function is approximated by a constant over each partition. By minimizing a positive cost function defined on the partitions, one can construct an upper bound for the optimal value function. We show that this approximate value function is independent of the positive cost function and that it is the least upper bound, given the partitions. [Copyright &y& Elsevier] AB - Copyright of Operations Research Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LINEAR programming KW - STOCHASTIC processes KW - DYNAMIC programming KW - SYMMETRY (Mathematics) KW - PARTITION functions KW - COST functions (Optimization) KW - Approximate dynamic programming KW - Linear programming KW - State aggregation N1 - Accession Number: 83460644; Park, M. 1; Krishnamoorthy, K. 2; Email Address: krishnak@ucla.edu; Darbha, S. 1; Chandler, P. 3; Pachter, M. 4; Affiliations: 1: Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843, United States; 2: Technology Solutions Division, Infoscitex Corporation, Dayton, OH 45431, United States; 3: Control Design & Analysis Branch, Air Force Research Laboratory, Wright-Patterson A.F.B., OH 45433, United States; 4: Electrical Engineering Department, Air Force Institute of Technology, Wright-Patterson A.F.B., OH 45433, United States; Issue Info: Nov2012, Vol. 40 Issue 6, p487; Thesaurus Term: LINEAR programming; Thesaurus Term: STOCHASTIC processes; Thesaurus Term: DYNAMIC programming; Subject Term: SYMMETRY (Mathematics); Subject Term: PARTITION functions; Subject Term: COST functions (Optimization); Author-Supplied Keyword: Approximate dynamic programming; Author-Supplied Keyword: Linear programming; Author-Supplied Keyword: State aggregation; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.orl.2012.08.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=83460644&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Hearn, John AU - Eichler, Jeffery AU - Hare, Christopher AU - Henley, Michael T1 - Cl2 deposition on soil matrices JO - Journal of Hazardous Materials JF - Journal of Hazardous Materials Y1 - 2012/10/30/ VL - 237-238 M3 - Article SP - 307 EP - 314 SN - 03043894 AB - Abstract: Deposition of chlorine gas, Cl2, on synthetic soil sample matrices was examined in a small chamber to ascertain its potential significance as a chemical sink during large-scale releases. The effects of organic matter, clay and sand mass fractions of the soil matrix, soil packing, and exposure to ultraviolet (UV) light on the observed Cl2 deposition were examined. Organic matter content was found to be the dominant soil variable investigated that affected Cl2 deposition; all other variables exhibited no measurable effect. Analytical results from the top 8.5mm of soil columns exposed to Cl2 were fit to a simple kinetic model with six adjustable parameters. The kinetic model included two reactive bins to account for fast- and slow-reacting material in the soil matrices. The resulting empirical equation agreed with the data to within a factor of two and accurately predicted results from soil mixes not used to optimize the adjustable parameters. Total Cl2 deposition, assuming a penetration depth of 8.5mm, was calculated to be as high as 160 metric tons per square kilometer for soil with an organic content of 10%, and inferred deposition velocities were as high as 0.5cm/s for organically rich soil. [Copyright &y& Elsevier] AB - Copyright of Journal of Hazardous Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Chlorine in soils KW - Soil compaction KW - Humus KW - Ultraviolet radiation KW - Soil matric potential KW - Electroplating KW - Chemical kinetics KW - Chlorine KW - Deposition KW - Soil N1 - Accession Number: 82108308; Hearn, John 1; Email Address: john.hearn@tyndall.af.mil; Eichler, Jeffery 2; Hare, Christopher 1; Henley, Michael 1; Affiliations: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Airbase Technologies Division, 139 Barnes Dr. Suite 2, Tyndall AFB, FL 32403, United States; 2: Universal Technology Corporation, 139 Barnes Dr. Suite 2, Tyndall AFB, FL 32403, United States; Issue Info: Oct2012, Vol. 237-238, p307; Thesaurus Term: Chlorine in soils; Thesaurus Term: Soil compaction; Thesaurus Term: Humus; Thesaurus Term: Ultraviolet radiation; Subject Term: Soil matric potential; Subject Term: Electroplating; Subject Term: Chemical kinetics; Author-Supplied Keyword: Chlorine; Author-Supplied Keyword: Deposition; Author-Supplied Keyword: Soil; NAICS/Industry Codes: 332813 Electroplating, Plating, Polishing, Anodizing, and Coloring; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 238910 Site Preparation Contractors; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jhazmat.2012.08.046 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=82108308&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Papanikolaou, Stefanos AU - Dimiduk, Dennis M. AU - Choi, Woosong AU - Sethna, James P. AU - Uchic, Michael D. AU - Woodward, Christopher F. AU - Zapperi, Stefano T1 - Quasi-periodic events in crystal plasticity and the self-organized avalanche oscillator. JO - Nature JF - Nature Y1 - 2012/10/25/ VL - 490 IS - 7421 M3 - Article SP - 517 EP - 521 SN - 00280836 AB - When external stresses in a system-physical, social or virtual-are relieved through impulsive events, it is natural to focus on the attributes of these avalanches. However, during the quiescent periods between them, stresses may be relieved through competing processes, such as slowly flowing water between earthquakes or thermally activated dislocation flow between plastic bursts in crystals. Such smooth responses can in turn have marked effects on the avalanche properties. Here we report an experimental investigation of slowly compressed nickel microcrystals, covering three orders of magnitude in nominal strain rate, in which we observe unconventional quasi-periodic avalanche bursts and higher critical exponents as the strain rate is decreased. Our experiments are faithfully reproduced by analytic and computational dislocation avalanche modelling that we have extended to incorporate dislocation relaxation, revealing the emergence of the self-organized avalanche oscillator: a novel critical state exhibiting oscillatory approaches towards a depinning critical point. This theory suggests that whenever avalanches compete with slow relaxation-in settings ranging from crystal microplasticity to earthquakes-dynamical quasi-periodic scale invariance ought to emerge. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Avalanches KW - Nickel KW - Strains & stresses (Mechanics) KW - Plasticity KW - Crystal oscillators N1 - Accession Number: 82762099; Papanikolaou, Stefanos 1; Dimiduk, Dennis M. 2; Choi, Woosong 3; Sethna, James P. 3; Uchic, Michael D. 2; Woodward, Christopher F. 2; Zapperi, Stefano 4; Affiliations: 1: Department of Mechanical Engineering and Materials Science and Department of Physics, Yale University, New Haven, Connecticut 06520-8286, USA; 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, Ohio 45433, USA; 3: Laboratory of Atomic and Solid State Physics, Department of Physics, Clark Hall, Cornell University, Ithaca, New York 14853-2501, USA; 4: 1] CNR-Consiglio Nazionale delle Ricerche, IENI, Via R. Cozzi 53, 20125 Milano, Italy [2] ISI Foundation, Via Alassio 11/c, 10126 Torino, Italy; Issue Info: 10/25/2012, Vol. 490 Issue 7421, p517; Thesaurus Term: Avalanches; Thesaurus Term: Nickel; Thesaurus Term: Strains & stresses (Mechanics); Subject Term: Plasticity; Subject Term: Crystal oscillators; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 5p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1038/nature11568 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=82762099&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Folsom, Thomas C.1 T1 - MINORITY REPORT: REAL PATENT REFORM, MAYBE LATER - THE AMERICA INVENTS ACT AND THE QUASI-RECODIFICATION SOLUTION. JO - Akron Intellectual Property Journal JF - Akron Intellectual Property Journal J1 - Akron Intellectual Property Journal PY - 2012/10// Y1 - 2012/10// VL - 6 IS - 2 CP - 2 M3 - Article SP - 179 EP - 300 SN - 19384572 AB - "Congress has not enacted comprehensive patent law reform in nearly 60 years … The need to update our patent laws has been meticulously documented … The [America Invents Act] is designed to establish a more efficient and streamlined patent system that will improve patent quality and limit unnecessary and counterproductive litigation costs" [ABSTRACT FROM AUTHOR] KW - Patents KW - Law reform KW - Intellectual property KW - Costs (Law) KW - United States. Congress N1 - Accession Number: 82980986; Authors:Folsom, Thomas C. 1; Affiliations: 1: Professor, Regent University School of Law, B.S. United States Air Force Academy; Subject: United States. Congress; Subject: Patents; Subject: Law reform; Subject: Intellectual property; Subject: Costs (Law); Subject: United States; Number of Pages: 122p; Illustrations: 1 Illustration; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=82980986&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR AU - Mouis, A.G. AU - Menon, A. AU - Katta, V. AU - Litzinger, T.A. AU - Linevsky, M. AU - Santoro, R.J. AU - Zeppieri, S.P. AU - Colket, M.B. AU - Roquemore, W.M. T1 - Effects of m-xylene on aromatics and soot in laminar, N2-diluted ethylene co-flow diffusion flames from 1 to 5atm JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/10// VL - 159 IS - 10 M3 - Article SP - 3168 EP - 3178 SN - 00102180 AB - Abstract: Experimental data and model results are presented for the effects of m-xylene on aromatic species and soot in a nitrogen-diluted ethylene flame over a range of pressures from 1 to 5atm. The experimental approach was designed to investigate the effects of m-xylene as a perturbation to a base flame by keeping the amount of carbon added as m-xylene to 5% or less. The experimental results indicate that the maximum soot levels and those of small (1 or 2 rings) and large (3 or more ring) aromatic species are roughly first order with respect to the amount of m-xylene added. A chemical kinetic model was formulated, integrated into a 2-D modeling code, and used to simulate the effects of m-xylene addition and pressure on aromatic species and soot. The modeling results capture the general trends in concentration of soot and small aromatics as m-xylene concentration and pressure are varied. However, the model under-predicts the effect of m-xylene concentration and pressure on soot compared to the experimental results. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Xylene KW - Soot KW - Mathematical models KW - Ethylene KW - Nitrogen KW - Diffusion KW - Pressure KW - Flame KW - Laminar flow KW - Aromatics KW - m-Xylene N1 - Accession Number: 79338476; Mouis, A.G. 1; Menon, A. 1; Katta, V. 2; Litzinger, T.A. 1; Email Address: TAL2@psu.edu; Linevsky, M. 1; Santoro, R.J. 1; Zeppieri, S.P. 3; Colket, M.B. 3; Roquemore, W.M. 4; Affiliations: 1: Penn State University, University Park, PA 16802, USA; 2: Innovative Scientific Solutions Inc., Dayton, OH 45440, USA; 3: United Technologies Research Center, East Hartford, CT 06118, USA; 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Issue Info: Oct2012, Vol. 159 Issue 10, p3168; Thesaurus Term: Xylene; Thesaurus Term: Soot; Thesaurus Term: Mathematical models; Thesaurus Term: Ethylene; Thesaurus Term: Nitrogen; Thesaurus Term: Diffusion; Thesaurus Term: Pressure; Subject Term: Flame; Subject Term: Laminar flow; Author-Supplied Keyword: Aromatics; Author-Supplied Keyword: m-Xylene; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.combustflame.2012.03.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=79338476&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Crouse, Christopher A. AU - Pierce, Christian J. AU - Spowart, Jonathan E. T1 - Synthesis and reactivity of aluminized fluorinated acrylic (AlFA) nanocomposites JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/10// VL - 159 IS - 10 M3 - Article SP - 3199 EP - 3207 SN - 00102180 AB - Abstract: Fluorinated materials, such as poly(tetrafluoroethylene) and its co-polymers, have attracted significant interest throughout the energetic materials community due to their strong reactivity with aluminum powders. Herein, we report the synthesis of a novel composite material produced through the in situ polymerization of 1H,1H,2H,2H-perfluorodecyl methacrylate in the presence of aluminum nanoparticles which have been previously functionalized with phosphoric acid 2-hydroxyethyl methacrylate ester to promote chemical integration into the polymer matrix. These materials, which we have termed aluminized fluorinated acrylic (AlFA) composites, have been prepared with particle contents ranging from 10% to 70% by weight. At particle loadings of 60wt.% or less, the AlFA composites exhibited thermoplastic behavior and were able to be processed by melt extrusion. The AlFA-50 composite demonstrated the highest reactivity (most intense flame and shortest time to achieve complete deflagration) during air combustion experiments performed on consolidated pellets. Chemical analysis of the char indicated the presence of AlF3, in addition to Al2O3, Al4C3 and residual Al, indicating that reaction with the fluoropolymer matrix does result in fluorination of the aluminum during the deflagration, however, this mechanism competes kinetically with air oxidation and carbide formation at higher particle loadings. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Copolymers KW - Nanocomposite materials -- Synthesis KW - Reactivity (Chemistry) KW - Fluorination KW - Polytef KW - Aluminum powder KW - Composite materials KW - Polymerization KW - Aluminum KW - Aluminum nanoparticles KW - Fluoropolymer KW - Reactive composites N1 - Accession Number: 79338479; Crouse, Christopher A. 1,2; Email Address: christopher.crouse.ctr@wpafb.af.mil; Pierce, Christian J. 1; Spowart, Jonathan E. 1; Affiliations: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, United States; 2: UES, Inc., Dayton, OH 45432, United States; Issue Info: Oct2012, Vol. 159 Issue 10, p3199; Thesaurus Term: Copolymers; Subject Term: Nanocomposite materials -- Synthesis; Subject Term: Reactivity (Chemistry); Subject Term: Fluorination; Subject Term: Polytef; Subject Term: Aluminum powder; Subject Term: Composite materials; Subject Term: Polymerization; Author-Supplied Keyword: Aluminum; Author-Supplied Keyword: Aluminum nanoparticles; Author-Supplied Keyword: Fluoropolymer; Author-Supplied Keyword: Reactive composites; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.combustflame.2012.03.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=79338479&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Cole, L. K. AU - Karagozian, A. R. AU - Cambier, J.-L. T1 - Stability of Flame-Shock Coupling in Detonation Waves: 1D Dynamics. JO - Combustion Science & Technology JF - Combustion Science & Technology Y1 - 2012/10//Oct/Nov2012 VL - 184 IS - 10/11 M3 - Article SP - 1502 EP - 1525 SN - 00102202 AB - In the present study, we utilize spatially high-order convergence rate methods with complex reaction kinetics in resolving the nonlinear dynamics associated with one-dimensional unstable detonations. For a spark-induced detonation, as the detonation decays towards the self-sustaining Chapman–Jouguet mode from an over-driven mode, one obtains a sequence of physical oscillations between the flame and shock front, with different frequency ranges (categorized as high frequency-low amplitude and low frequency-high amplitude), dependent on the time after initiation of the detonation. The present studies indicate that one must use sufficient spatial resolution as well as realistic, complex kinetics to accurately simulate the preferred re-explosion and instability modes. Metrics that characterize the instabilities include, in addition to peak pressure, dominant high and low frequencies and time to re-explosion. A simple model for the transmission of acoustic and entropy waves is used to interpret physical phenomena creating the different instability modes, with reasonable quantitative correspondence to simulation results. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Detonation waves KW - Flame KW - High-order derivatives (Mathematics) KW - Gas dynamics KW - Convergence (Technology) KW - Chemical kinetics KW - Entropy KW - Sound waves KW - Complex kinetics KW - Detonation instabilities KW - High order numerical schemes KW - Reactive gas dynamics N1 - Accession Number: 83140299; Cole, L. K. 1; Karagozian, A. R. 1; Email Address: ark@seas.ucla.edu; Cambier, J.-L. 2; Affiliations: 1: Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, California, USA; 2: Air Force Research Laboratory Spacecraft Branch Edwards AFB, California, USA; Issue Info: Oct/Nov2012, Vol. 184 Issue 10/11, p1502; Subject Term: Detonation waves; Subject Term: Flame; Subject Term: High-order derivatives (Mathematics); Subject Term: Gas dynamics; Subject Term: Convergence (Technology); Subject Term: Chemical kinetics; Subject Term: Entropy; Subject Term: Sound waves; Author-Supplied Keyword: Complex kinetics; Author-Supplied Keyword: Detonation instabilities; Author-Supplied Keyword: High order numerical schemes; Author-Supplied Keyword: Reactive gas dynamics; Number of Pages: 24p; Document Type: Article L3 - 10.1080/00102202.2012.690316 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=83140299&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Mollenhauer, David AU - Ward, Logan AU - Iarve, Endel AU - Putthanarat, Sirina AU - Hoos, Kevin AU - Hallett, Stephen AU - Li, Xiangqian T1 - Simulation of discrete damage in composite Overheight Compact Tension specimens JO - Composites: Part A, Applied Science & Manufacturing JF - Composites: Part A, Applied Science & Manufacturing Y1 - 2012/10// VL - 43 IS - 10 M3 - Article SP - 1667 EP - 1679 SN - 1359835X AB - Abstract: Damage progression in laminated Overheight Compact Tension specimens was modeled using discrete representations of individual cracks and delaminations. Matrix cracking and delamination initiation, propagation, and interaction, without any prior knowledge and/or meshing of matrix cracking surfaces, is accomplished by combining stress and fracture mechanics-based constitutive modeling within a mesh independent crack-modeling framework. Simulation results including only matrix damage for specimens with [452/902/−452/02]s and [04/904]2s stacking sequences were compared with load–displacement curves and 3D X-ray micro computed tomography results from tested specimens. Excellent correlation was shown between the simulated and experimental load–displacement curves including statistical variations and proper representation of both the curve non-linearity and peak load. Similarly, a high level of correlation between simulated and experimental damage extent was shown. Additionally, a [45/90/−45/0]2s specimen exhibiting significant fiber fracture was modeled and results compared with experiment. Fiber fracture was simulated using a continuum damage mechanics approach in addition to the discrete cracking and delamination damage representations of matrix damage. The simulated load displacement curve and damage extent compared favorably with experimental results. [Copyright &y& Elsevier] AB - Copyright of Composites: Part A, Applied Science & Manufacturing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIMULATION methods & models KW - COMPOSITE materials KW - FRACTURE mechanics KW - DEFORMATIONS (Mechanics) KW - TOMOGRAPHY KW - A. Carbon fiber KW - A. Laminates KW - B. Fracture KW - C. Computational modeling N1 - Accession Number: 79562693; Mollenhauer, David 1; Email Address: david.mollenhauer@wpafb.af.mil; Ward, Logan 1; Iarve, Endel 2; Putthanarat, Sirina 2; Hoos, Kevin 2; Hallett, Stephen 3; Li, Xiangqian 3; Affiliations: 1: Air Force Research Laboratory, 2941 Hobson Way, WPAFB, OH 45433-7750, USA; 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0060, USA; 3: University of Bristol, Bristol BS8 1TR, United Kingdom; Issue Info: Oct2012, Vol. 43 Issue 10, p1667; Thesaurus Term: SIMULATION methods & models; Subject Term: COMPOSITE materials; Subject Term: FRACTURE mechanics; Subject Term: DEFORMATIONS (Mechanics); Subject Term: TOMOGRAPHY; Author-Supplied Keyword: A. Carbon fiber; Author-Supplied Keyword: A. Laminates; Author-Supplied Keyword: B. Fracture; Author-Supplied Keyword: C. Computational modeling; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.compositesa.2011.10.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=79562693&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Anderson, Richard G. AU - Binner, Jane M. AU - Schmidt, Vincent A. T1 - Connectionist-based rules describing the pass-through of individual goods prices into trend inflation in the United States JO - Economics Letters JF - Economics Letters Y1 - 2012/10// VL - 117 IS - 1 M3 - Article SP - 174 EP - 177 SN - 01651765 AB - Abstract: This paper examines the inflation “pass-through” problem in American monetary policy, defined as the relationship between changes in the growth rates of individual goods and the subsequent economy-wide rate of growth of consumer prices. Initial relationships are established with Granger causality tests robust to structural breaks. A feedforward artificial neural network (ANN) is used to approximate the functional relationship between selected component subindexes and the headline CPI. Moving beyond the ANN “black box”, we illustrate how decision rules can be extracted from the network. [Copyright &y& Elsevier] AB - Copyright of Economics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRUCTURAL break (Economics) KW - NEURAL networks (Computer science) KW - EXCHANGE rate pass-through KW - MONETARY policy KW - ECONOMIC development KW - CONSUMER price indexes KW - INFLATION (Finance) KW - GRANGER causality test KW - CONNECTIONISM KW - Consumer prices KW - Data mining KW - Inflation KW - Neural network KW - Rule generation N1 - Accession Number: 79885605; Anderson, Richard G. 1,2; Email Address: rganderson.stl@gmail.com; Binner, Jane M. 2; Email Address: j.m.binner@sheffield.ac.uk; Schmidt, Vincent A. 3; Email Address: vince@vincentive.org; Affiliations: 1: Federal Reserve Bank of St. Louis, 1421 Dr Martin Luther King Drive, St Louis, MO, 63106-3716, USA; 2: University of Sheffield, Management School, Sheffield S1 4DT, UK; 3: U.S. Air Force Research Laboratory, Dayton, OH, 45433-5543, USA; Issue Info: Oct2012, Vol. 117 Issue 1, p174; Thesaurus Term: STRUCTURAL break (Economics); Thesaurus Term: NEURAL networks (Computer science); Thesaurus Term: EXCHANGE rate pass-through; Thesaurus Term: MONETARY policy; Thesaurus Term: ECONOMIC development; Thesaurus Term: CONSUMER price indexes; Thesaurus Term: INFLATION (Finance); Thesaurus Term: GRANGER causality test; Subject Term: CONNECTIONISM; Author-Supplied Keyword: Consumer prices; Author-Supplied Keyword: Data mining; Author-Supplied Keyword: Inflation; Author-Supplied Keyword: Neural network; Author-Supplied Keyword: Rule generation; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.econlet.2012.04.094 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=79885605&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Tortonesi, Mauro AU - Stefanelli, Cesare AU - Benvegnu, Erika AU - Ford, Ken AU - Suri, Niranjan AU - Linderman, Mark T1 - Multiple-UAV coordination and communications in tactical edge networks. JO - IEEE Communications Magazine JF - IEEE Communications Magazine Y1 - 2012/10// VL - 50 IS - 10 M3 - Article SP - 48 EP - 55 SN - 01636804 AB - Unmanned aerial vehicles are becoming prevalent in tactical networks as they are proving to be an extremely flexible platform for a variety of applications. Increasingly, UAVs need to cooperate with each other in order to perform complex tasks such as target monitoring and prosecution, information gathering and processing, and delivery between disconnected portions of the network. However, UAV cooperation in tactical scenarios represents a major challenge from both the coordination and communication perspectives. In fact, cooperating UAVs must achieve a high degree of coordination in order to accomplish complex tasks in a dynamic and uncertain environment. In turn, as UAVs interact with other entities, the effective coordination of multiple-UAV operations requires specific support in terms of efficient communication protocols and mechanisms exploiting UAVs as mobile assets that facilitate and hasten critical information flows. This article presents a series of considerations and lessons learned that we have collected in our experience with multiple- UAV coordination and communications in tactical edge networks, and discusses some of the main components of a middleware we specifically designed to support multiple-UAV operations. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Communications Magazine is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Information processing KW - Information storage & retrieval systems KW - Computer software KW - Telecommunication systems KW - Drone aircraft KW - Decision making KW - Middleware KW - Monitoring KW - Optical fiber communication KW - Sensors KW - Unmanned aerial vehicles KW - Vehicle dynamics N1 - Accession Number: 82707767; Tortonesi, Mauro 1; Stefanelli, Cesare 1; Benvegnu, Erika 2; Ford, Ken 2; Suri, Niranjan 3; Linderman, Mark 4; Affiliations: 1: University of Ferrara; 2: Florida Institute for Human & Machine Cognition; 3: Florida Institute for Human & Machine Cognition and U.S. Army Research Laboratory; 4: U.S. Air Force Research Laboratory; Issue Info: Oct2012, Vol. 50 Issue 10, p48; Thesaurus Term: Information processing; Thesaurus Term: Information storage & retrieval systems; Thesaurus Term: Computer software; Thesaurus Term: Telecommunication systems; Subject Term: Drone aircraft; Author-Supplied Keyword: Decision making; Author-Supplied Keyword: Middleware; Author-Supplied Keyword: Monitoring; Author-Supplied Keyword: Optical fiber communication; Author-Supplied Keyword: Sensors; Author-Supplied Keyword: Unmanned aerial vehicles; Author-Supplied Keyword: Vehicle dynamics; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 517410 Satellite Telecommunications; Number of Pages: 8p; Document Type: Article L3 - 10.1109/MCOM.2012.6316775 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=82707767&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Mudaliar, Saba AU - Sotnikov, Vladimir I. T1 - Radiation Characteristics of Antennas Embedded in a Medium With a Two-Temperature Electron Population. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2012/10// Y1 - 2012/10// VL - 60 IS - 10 M3 - Article SP - 4545 EP - 4555 SN - 0018926X AB - It is well-known that low-frequency electromagnetic (EM) signals are heavily attenuated in a medium with dense electron population. All signals below the plasma frequency of the medium get cut off. If we create in this medium, a small population of relatively hot electrons the composite medium then supports low-frequency electrostatic oscillations known as electron acoustic waves (EAW) [e.g., Gary and Tokar, Phys. Fluids 28, 2439]. The dispersion relation of this composite medium shows that it supports EAW in the frequency band where EM signals are cut off. Thus, it is possible, in principle, to employ EAW to transmit signals across an overdense plasma medium. Our primary interest in this paper is to study the radiation characteristics of a source current distribution embedded in a half-space of our composite medium. To enable this, we derive the Green's functions for our problem and, hence, study the radiation characteristics of antennas. When the source signal frequency is below the plasma frequency, only EAW exist in the composite medium, while only EM waves can exist in the free space above. We find that the far-zone radiation fields of any current distribution consist only of \theta-polarized waves. Explicit expressions for the radiated fields are obtained for horizontally- and vertically-polarized Hertzian dipoles embedded in our composite medium. We, hence, find that in both cases the radiation patterns are skewed towards the horizon. In particular, we find that the radiation pattern of a horizontal dipole has two lobes as opposed to one in the underdense case. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETISM KW - ELECTRONS KW - ANTENNAS (Electronics) KW - ELECTRIC waves KW - MAGNETIC dipoles N1 - Accession Number: 82710501; Source Information: Oct2012, Vol. 60 Issue 10, p4545; Subject Term: ELECTROMAGNETISM; Subject Term: ELECTRONS; Subject Term: ANTENNAS (Electronics); Subject Term: ELECTRIC waves; Subject Term: MAGNETIC dipoles; Subject Term: ; Number of Pages: 11p; ; Document Type: Article; L3 - 10.1109/TAP.2012.2207314 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=82710501&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Zhu, Junda AU - Yuan, Liang AU - Zheng, Yuan F. AU - Ewing, Robert L. T1 - Stereo Visual Tracking Within Structured Environments for Measuring Vehicle Speed. JO - IEEE Transactions on Circuits & Systems for Video Technology JF - IEEE Transactions on Circuits & Systems for Video Technology Y1 - 2012/10// VL - 22 IS - 10 M3 - Article SP - 1471 EP - 1484 SN - 10518215 AB - We present a novel visual tracking method for measuring the speed of a moving vehicle within a structured environment using stationary stereo cameras. In the proposed method, visual stereo tracking and motion estimation in 3-D are integrated within the framework of particle filtering. The visual tracking processes in the two views are coupled with each other since they are dependent upon the same 3-D motion and correlated in the observations. Considering that the vehicle's motion is physically constrained by the environment, we further utilize the path constraint reconstructed from stereo views to reduce the uncertainty about the vehicle's motion and improve the accuracy for both tracking and speed measuring. The proposed method overcomes the challenges arising from the limitation of depth accuracy in a long-range stereo, and the experiments on the synthetic and real-world sequences have demonstrated its effectiveness and accuracy in both the tracking performance and the speed measurement. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Circuits & Systems for Video Technology is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONTE Carlo method KW - STEREO vision (Computer science) KW - THREE-dimensional display systems KW - SPEED of automobiles KW - FEATURE extraction (Data processing) KW - CAMERAS KW - Accuracy KW - Cameras KW - Feature extraction KW - Object tracking KW - particle filtering KW - Radar tracking KW - stereo vision KW - structured environments KW - Three dimensional displays KW - Tracking KW - Vehicles N1 - Accession Number: 82707672; Zhu, Junda 1; Yuan, Liang 1; Zheng, Yuan F. 1; Ewing, Robert L. 2; Affiliations: 1: Department of Electrical and Computer Engineering, Ohio State University, Columbus, OH, USA; 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, USA; Issue Info: Oct2012, Vol. 22 Issue 10, p1471; Thesaurus Term: MONTE Carlo method; Subject Term: STEREO vision (Computer science); Subject Term: THREE-dimensional display systems; Subject Term: SPEED of automobiles; Subject Term: FEATURE extraction (Data processing); Subject Term: CAMERAS; Author-Supplied Keyword: Accuracy; Author-Supplied Keyword: Cameras; Author-Supplied Keyword: Feature extraction; Author-Supplied Keyword: Object tracking; Author-Supplied Keyword: particle filtering; Author-Supplied Keyword: Radar tracking; Author-Supplied Keyword: stereo vision; Author-Supplied Keyword: structured environments; Author-Supplied Keyword: Three dimensional displays; Author-Supplied Keyword: Tracking; Author-Supplied Keyword: Vehicles; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 414430 Photographic equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423410 Photographic Equipment and Supplies Merchant Wholesalers; NAICS/Industry Codes: 443142 Electronics Stores; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 443145 Camera and photographic supplies stores; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TCSVT.2012.2202074 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=82707672&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Meola, Joseph AU - Eismann, Michael T. AU - Moses, Randolph L. AU - Ash, Joshua N. T1 - Application of Model-Based Change Detection to Airborne VNIR/SWIR Hyperspectral Imagery. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2012/10//Oct2012 Part 1 VL - 50 IS - 10 M3 - Article SP - 3693 EP - 3706 SN - 01962892 AB - Hyperspectral change detection (HSCD) provides an avenue for detecting subtle targets in complex backgrounds. Complicating the problem of change detection is the presence of shadow, illumination, and atmospheric differences, as well as misregistration and parallax error, which often produce the appearance of change. Recent development of a model-based (MB) approach to HSCD has demonstrated potential improvement for mitigating false alarms due specifically to shadow differences using calibrated data. Further development and application of the MB approach is provided here. The method is extended for use on both uncalibrated and relatively calibrated hyperspectral data and is applied to airborne hyperspectral imagery collected using the Hyperspectral Digital Imagery Collection Experiment visible to short-wave infrared sensor and uncalibrated tower imagery collected by the Air Force Research Laboratory. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERSPECTRAL imaging systems KW - MATHEMATICAL models KW - RESEARCH KW - DETECTORS KW - DIGITAL image processing KW - SHORTWAVE radio KW - Calibration KW - Change detection KW - Data models KW - hyperspectral KW - Hyperspectral imaging KW - hypothesis testing KW - image analysis KW - Lighting KW - optimization KW - physical model KW - Sensors KW - Vectors N1 - Accession Number: 82707883; Meola, Joseph 1; Eismann, Michael T. 1; Moses, Randolph L. 2; Ash, Joshua N. 2; Affiliations: 1: Multispectral Sensing Division, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; 2: Electrical and Computer Engineering Department, The Ohio State University, Columbus, OH, USA; Issue Info: Oct2012 Part 1, Vol. 50 Issue 10, p3693; Thesaurus Term: HYPERSPECTRAL imaging systems; Thesaurus Term: MATHEMATICAL models; Thesaurus Term: RESEARCH; Subject Term: DETECTORS; Subject Term: DIGITAL image processing; Subject Term: SHORTWAVE radio; Author-Supplied Keyword: Calibration; Author-Supplied Keyword: Change detection; Author-Supplied Keyword: Data models; Author-Supplied Keyword: hyperspectral; Author-Supplied Keyword: Hyperspectral imaging; Author-Supplied Keyword: hypothesis testing; Author-Supplied Keyword: image analysis; Author-Supplied Keyword: Lighting; Author-Supplied Keyword: optimization; Author-Supplied Keyword: physical model; Author-Supplied Keyword: Sensors; Author-Supplied Keyword: Vectors; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TGRS.2012.2186305 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=82707883&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Stone, B.R. AU - Heimbuch, B.K. AU - Wu, C.-Y. AU - Wander, J.D. T1 - Design, construction and validation of a nose-only inhalation exposure system to measure infectivity of filtered bioaerosols in mice. JO - Journal of Applied Microbiology JF - Journal of Applied Microbiology Y1 - 2012/10// VL - 113 IS - 4 M3 - Article SP - 757 EP - 766 PB - Wiley-Blackwell SN - 13645072 AB - Aims The aim of this project was to validate a method to deliver a reproducible, selected dose of infective bioaerosol through a respiratory protective technology to an animal that exhibits a proportional clinical response. Methods and Results The Controlled Aerosol Test System ( CATS) was designed to generate and condition a viable infective aerosol, pass it through a treatment technology and thence to the breathing zone of a mouse constrained in a Nose- Only Inhalation Exposure System ( NOIES). A scanning mobility particle sizer and impingers at sampling ports were used to show that viability is preserved and particle size distribution ( PSD) is acceptably uniform throughout the open CATS, including the 12 ports of the NOIES, and that a particle filter used caused the expected attenuation of particle counts. Conclusions Controlled Aerosol Test System delivers uniformly to mice constrained in the NOIES a selectable dose of viral bioaerosol whose PSD and viable counts remain consistent for an hour. Significance and Impact of the Study This study's characterization of CATS provides a new test system in which a susceptible small-animal model can be used as the detector in a quantitative method to evaluate the ability of respiratory protective technologies to attenuate the infectivity of an inspired pathogenic aerosol. This provides a major improvement over the use of viable bioaerosol collectors (e.g. impactors and impingers), which provide data that are difficult to relate to the attenuation of pathogenicity. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Microbiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Anti-infective agents KW - Aerosols (Sprays) KW - Particle size distribution KW - Polymerase chain reaction KW - Breathing apparatus KW - Mice as laboratory animals KW - antimicrobials KW - infection KW - polymerase chain reaction KW - viruses N1 - Accession Number: 79861486; Stone, B.R. 1,2; Heimbuch, B.K. 1; Wu, C.-Y. 2; Wander, J.D. 3; Affiliations: 1: Applied Research Associates; 2: Department of Environmental Engineering Sciences, University of Florida; 3: Airbase Sciences Branch, Air Force Research Laboratory; Issue Info: Oct2012, Vol. 113 Issue 4, p757; Thesaurus Term: Anti-infective agents; Thesaurus Term: Aerosols (Sprays); Thesaurus Term: Particle size distribution; Subject Term: Polymerase chain reaction; Subject Term: Breathing apparatus; Subject Term: Mice as laboratory animals; Author-Supplied Keyword: antimicrobials; Author-Supplied Keyword: infection; Author-Supplied Keyword: polymerase chain reaction; Author-Supplied Keyword: viruses; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 10p; Illustrations: 1 Diagram, 3 Charts, 2 Graphs; Document Type: Article L3 - 10.1111/j.1365-2672.2012.05403.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=79861486&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - McDonald, R.S. AU - Sambol, A.R. AU - Heimbuch, B.K. AU - Brown, T.L. AU - Hinrichs, S.H. AU - Wander, J.D. T1 - Proportional mouse model for aerosol infection by influenza. JO - Journal of Applied Microbiology JF - Journal of Applied Microbiology Y1 - 2012/10// VL - 113 IS - 4 M3 - Article SP - 767 EP - 778 PB - Wiley-Blackwell SN - 13645072 AB - Aims The aim of this study was to demonstrate a prototype tool for measuring infectivity of an aerosolized human pathogen - influenza A/ PR/8/34 ( H1 N1) virus - using a small-animal model in the Controlled Aerosol Test System ( CATS). Methods and Results Intranasal inoculation of nonadapted H1 N1 virus into C57 BL, BALB/c and CD-1 mice caused infection in all three species. Respiratory exposure of CD-1 mice to the aerosolized virus at graduated doses was accomplished in a modified rodent exposure apparatus. Weight change was recorded for 7 days postexposure, and viral populations in lung tissue homogenates were measured post mortem by DNA amplification (qRT- PCR), direct fluorescence and microscopic evaluation of cytopathic effect. Plots of weight change and of PCR cycle threshold vs delivered dose were linear to threshold doses of ~40 TCID50 and ~12 TCID50, respectively. Conclusions MID50 for inspired H1 N1 aerosols in CD-1 mice is between 12 and 40 TCID50; proportionality to dose of weight loss and viral populations makes the CD-1 mouse a useful model for measuring infectivity by inhalation. Significance and Impact of the Study In the CATS, this mouse-virus model provides the first quantitative method to evaluate the ability of respiratory protective technologies to attenuate the infectivity of an inspired pathogenic aerosol. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Microbiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Influenza KW - Aerosols (Sprays) KW - Prototypes KW - DNA KW - Reverse transcriptase polymerase chain reaction KW - Respiratory therapy KW - Gene amplification KW - Mice as laboratory animals KW - aerosol KW - H1 N1 KW - infection KW - influenza KW - inhalation KW - mouse KW - respiratory protection N1 - Accession Number: 79861477; McDonald, R.S. 1; Sambol, A.R. 2; Heimbuch, B.K. 1; Brown, T.L. 2; Hinrichs, S.H. 2; Wander, J.D. 3; Affiliations: 1: Applied Research Associates, Inc; 2: University of Nebraska Medical Center, 985900 Nebraska Medical Center; 3: Airbase Sciences Branch, Air Force Research Laboratory, Tyndall AFB; Issue Info: Oct2012, Vol. 113 Issue 4, p767; Thesaurus Term: Influenza; Thesaurus Term: Aerosols (Sprays); Subject Term: Prototypes; Subject Term: DNA; Subject Term: Reverse transcriptase polymerase chain reaction; Subject Term: Respiratory therapy; Subject Term: Gene amplification; Subject Term: Mice as laboratory animals; Author-Supplied Keyword: aerosol; Author-Supplied Keyword: H1 N1; Author-Supplied Keyword: infection; Author-Supplied Keyword: influenza; Author-Supplied Keyword: inhalation; Author-Supplied Keyword: mouse; Author-Supplied Keyword: respiratory protection; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 12p; Illustrations: 2 Color Photographs, 1 Diagram, 4 Charts, 2 Graphs; Document Type: Article L3 - 10.1111/j.1365-2672.2012.05402.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=79861477&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hummel, Christopher K.1 AU - Freeland, Maritza2 AU - Craft, Eric3 AU - McKellips, Paul4 T1 - Employing Immersion Theory as a Public Affairs Instructional Tool in Frontier Conflict Regions. JO - Journal of Public Affairs Education JF - Journal of Public Affairs Education J1 - Journal of Public Affairs Education PY - 2012///Fall2012 Y1 - 2012///Fall2012 VL - 18 IS - 4 CP - 4 M3 - Article SP - 661 EP - 681 SN - 15236803 AB - Frontier conflict regions push the boundaries of how to educate foreign civilian and military public affairs specialists. In most cases, United States military personnel and Department of Defense civilians are implanted in these regions as instructors. With no formal guidance or education on how to be educators themselves, these teacher-recruits must design, plan, and execute training strategy on their own. Public affairs mentoring in a war zone can be enhanced through the process of creative immersion. Classroom theory and instruction is not efficient when training members of a foreign military that have been tasked with traditional public affairs officer assignments yet lack any familiarity with computers, cameras, software, writing skills, or Internet access. Immersion is the process of putting public affairs tools in the hands of untrained and often uneducated people and developing process knowledge as opposed to theoretical knowledge. Immersion is an emerging educational tool that is particularly practical in a third-world country at war, also called a frontier conflict region. This case study proposes a new standard for delivering public affairs learning in emerging and frontier conflict regions as created by an American training team positioned near Gardez, Afghanistan, and their endeavor to establish a lasting public affairs program in the eastern region of Operation Enduring Freedom. [ABSTRACT FROM AUTHOR] KW - Concentrated study KW - Educators KW - Public administration KW - Public interest KW - Military personnel -- United States KW - United States. Dept. of Defense N1 - Accession Number: 83072045; Authors:Hummel, Christopher K. 1; Freeland, Maritza 2; Craft, Eric 3; McKellips, Paul 4; Affiliations: 1: United States Air Force Veteran Houston, Texas; 2: MSgt, United States Air Force Joint Base Andrews, Maryland; 3: TSgt, United States Air Force Aviano Air Base, Italy; 4: Officer in Charge, Civilian Expeditionary Workforce Washington, DC; Subject: Concentrated study; Subject: Public administration; Subject: Public interest; Subject: Educators; Subject: Military personnel -- United States; Subject: United States. Dept. of Defense; Subject: United States; Number of Pages: 21p; Illustrations: 4 Color Photographs, 1 Chart; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=83072045&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR AU - Brungart, Douglas S. AU - Iyer, Nandini T1 - Better-ear glimpsing efficiency with symmetrically-placed interfering talkers. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2012/10// VL - 132 IS - 4 M3 - Article SP - 2545 EP - 2556 SN - 00014966 AB - In listening tasks where a target speech signal is spatially separated from a masking voice, listeners can often gain a substantial advantage in performance by attending to the ear with the better signal-to-noise ratio (SNR). However, this better-ear strategy becomes much more complicated when a target talker located in front of the listener is masked by interfering talkers positioned at symmetric locations to the left and right of the target. When this happens, there are no long-term SNR advantages at either ear and the only binaural SNR advantages available are the result of complicated better-ear glimpses that vary as a function of frequency and rapidly switch back and forth between the two ears according to the natural fluctuations in the relative levels of the two masking voices. In this study, a signal processing technique was used to take the better-ear glimpses that would ordinarily be randomly distributed across the two ears in a binaural speech signal and move them all into the same ear. This resulted in a monaural signal that contained all the information available to an ideal listener using an optimal binaural glimpsing strategy. Speech intelligibility was measured with these optimized monaural stimuli and compared to performance with unprocessed binaural speech stimuli. Performance was similar in these two conditions, suggesting that listeners with normal hearing are able to efficiently extract information from better-ear glimpses that fluctuate rapidly across frequency and across the two ears. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LISTENING KW - SPEECH KW - AUDITORY masking KW - SIGNAL-to-noise ratio KW - SIGNAL processing N1 - Accession Number: 82145824; Brungart, Douglas S. 1; Iyer, Nandini 2; Affiliations: 1 : Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, Maryland 20889; 2 : Air Force Research Laboratory, 2610 Seventh Street, Wright-Patterson Air Force Base, Ohio, 45433; Source Info: Oct2012, Vol. 132 Issue 4, p2545; Subject Term: LISTENING; Subject Term: SPEECH; Subject Term: AUDITORY masking; Subject Term: SIGNAL-to-noise ratio; Subject Term: SIGNAL processing; Number of Pages: 12p; Document Type: Article L3 - 10.1121/1.4747005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=82145824&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR AU - Bernstein, Joshua G. W. AU - Summers, Van AU - Iyer, Nandini AU - Brungart, Douglas S. T1 - Set-size procedures for controlling variations in speech-reception performance with a fluctuating masker. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2012/10// VL - 132 IS - 4 M3 - Article SP - 2676 EP - 2689 SN - 00014966 AB - Adaptive signal-to-noise ratio (SNR) tracking is often used to measure speech reception in noise. Because SNR varies with performance using this method, data interpretation can be confounded when measuring an SNR-dependent effect such as the fluctuating-masker benefit (FMB) (the intelligibility improvement afforded by brief dips in the masker level). One way to overcome this confound, and allow FMB comparisons across listener groups with different stationary-noise performance, is to adjust the response set size to equalize performance across groups at a fixed SNR. However, this technique is only valid under the assumption that changes in set size have the same effect on percentage-correct performance for different masker types. This assumption was tested by measuring nonsense-syllable identification for normal-hearing listeners as a function of SNR, set size and masker (stationary noise, 4- and 32-Hz modulated noise and an interfering talker). Set-size adjustment had the same impact on performance scores for all maskers, confirming the independence of FMB (at matched SNRs) and set size. These results, along with those of a second experiment evaluating an adaptive set-size algorithm to adjust performance levels, establish set size as an efficient and effective tool to adjust baseline performance when comparing effects of masker fluctuations between listener groups. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIGNAL-to-noise ratio KW - SPEECH perception KW - AUDITORY masking KW - AUDITORY perception KW - SIGNAL processing KW - NOISE N1 - Accession Number: 82145808; Bernstein, Joshua G. W. 1; Summers, Van 1; Iyer, Nandini 2; Brungart, Douglas S. 1; Affiliations: 1 : Audiology and Speech Center, Walter Reed National Military Medical Center, Bethesda, Maryland 20889; 2 : Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433; Source Info: Oct2012, Vol. 132 Issue 4, p2676; Subject Term: SIGNAL-to-noise ratio; Subject Term: SPEECH perception; Subject Term: AUDITORY masking; Subject Term: AUDITORY perception; Subject Term: SIGNAL processing; Subject Term: NOISE; Number of Pages: 14p; Document Type: Article L3 - 10.1121/1.4746019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=82145808&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR AU - English, Teresa G. AU - Simpson, James R. AU - Landman, Drew AU - Parker, Peter A. T1 - An Efficient Split-Plot Approach for Modeling Nonlinear Aerodynamic Effects. JO - Quality Engineering JF - Quality Engineering Y1 - 2012/10//Oct-Dec2012 VL - 24 IS - 4 M3 - Article SP - 522 EP - 530 PB - Taylor & Francis Ltd SN - 08982112 AB - An everyday challenge faced by experimenters across a variety of scientific disciplines is performing well-designed experiments in the presence of characteristics that pose restrictions on complete randomization of the experimental parameters. To mitigate these restrictions on complete randomization, a split-plot experimental design methodology can be employed. The current level of sophistication in split-plot designs is now sufficient to meet the demands of higher-order models in a manner straightforward enough for practitioners. A novel case of a second-order split-plot application was recently implemented in the field of aerodynamic engineering in wind tunnel testing. Wind tunnel environments often pose restrictions on complete randomization of the test runs when aircraft physical configuration changes are required. In addition, aerodynamic empirical models require second-order effects to fit the curvature often observed in response models. Traditionally, wind tunnel testing is performed using a one-factor-at-a-time approach, which prevents capturing factor interactions and quantifying system uncertainty. This article presents a case in which a micro air vehicle (MAV) was tested in the presence of randomization restrictions with expected second-order effects utilizing an efficient design of experiments (DOE) split-plot approach. [ABSTRACT FROM PUBLISHER] AB - Copyright of Quality Engineering is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - EXPERIMENTAL design KW - RANDOMIZATION (Statistics) KW - WIND tunnel testing KW - AERODYNAMIC measurements N1 - Accession Number: 80232262; English, Teresa G. 1; Email Address: teresa.english@eglin.af.mil; Simpson, James R. 2; Landman, Drew 3; Parker, Peter A. 4; Affiliations: 1: Munitions Directorate, Air Force Research Laboratory, Eglin AFB, Eglin, Florida; 2: Test Management, Air Force Research Laboratory, Eglin AFB, Eglin, Florida; 3: Department of Mechanical and Aerospace Engineering, Old Dominion University, Norfolk, Virginia; 4: NASA Langley Research Center, National Aeronautics and Space Administration, Hampton, Virginia; Issue Info: Oct-Dec2012, Vol. 24 Issue 4, p522; Subject Term: AERODYNAMICS; Subject Term: EXPERIMENTAL design; Subject Term: RANDOMIZATION (Statistics); Subject Term: WIND tunnel testing; Subject Term: AERODYNAMIC measurements; Number of Pages: 9p; Illustrations: 1 Color Photograph, 1 Diagram, 6 Charts, 4 Graphs; Document Type: Article L3 - 10.1080/08982112.2012.710164 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=80232262&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR T1 - College Coaches Corner-Speed Training. AU - Pinske, Kim AU - Greener, Trent AU - Peterson, Andrew JO - Strength & Conditioning Journal (Lippincott Williams & Wilkins) JF - Strength & Conditioning Journal (Lippincott Williams & Wilkins) Y1 - 2012/10// VL - 34 IS - 5 SP - 96 EP - 98 SN - 15241602 N1 - Accession Number: 82788977; Author: Pinske, Kim: 1 Author: Greener, Trent: 2 Author: Peterson, Andrew: 3 ; Author Affiliation: 1 United States Air Force Academy, Colorado Springs, Colorado: 2 University of Wyoming, Laramie, Wyoming: 3 Humboldt State University, Arcata, California; No. of Pages: 3; Language: English; Publication Type: Article; Update Code: 20121103 N2 - The article discusses the importance of speed training as an integral part of improving athletic performance. The role played by speed training as an aspect for strength and conditioning coaches for most athletes is highlighted. How a panel of coaches approach speed training with their athletes is explored. KW - *PHYSICAL training & conditioning KW - *COLLEGE athletes KW - *PERFORMANCE KW - *COACHES (Athletics) KW - *STRENGTH training KW - *SPORTS personnel UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=82788977&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 104368984 T1 - Exposure to Prescription Drugs Labeled for Risk of Adverse Effects of Suicidal Behavior or Ideation among 100 Air Force Personnel who Died by Suicide, 2006-2009. AU - Lavigne JE AU - McCarthy MM AU - Chapman R AU - Petrilla A AU - Knox KL Y1 - 2012/10// N1 - Accession Number: 104368984. Language: English. Entry Date: 20130301. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Biomedical; Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. NLM UID: 7608054. KW - Drug Labeling KW - Military Personnel -- Psychosocial Factors KW - Drugs, Prescription -- Adverse Effects KW - Suicide KW - Adult KW - Antidepressive Agents -- Adverse Effects KW - Antidepressive Agents -- Therapeutic Use KW - Female KW - Male KW - Military Personnel KW - United States SP - 561 EP - 566 JO - Suicide & Life-Threatening Behavior JF - Suicide & Life-Threatening Behavior JA - SUICIDE LIFE THREATENING BEHAV VL - 42 IS - 5 CY - Malden, Massachusetts PB - Wiley-Blackwell AB - Prescription drugs for many indications are labeled with warnings for potential risk of suicidal ideation or behavior. Exposures to prescription drugs labeled for adverse effects of suicidal behavior or ideation among 100 Air Force personnel who died by suicide between 2006 and 2009 are described. Air Force registry data were linked to administrative prescription data. Descriptive statistics illustrate utilization: 89 personnel had a prescription history, 35 filled at least one prescription labeled with a warning, 26 had antidepressants on hand at death, and 2 died by drug overdose. Most airmen were not exposed to any prescriptions labeled for risk of suicidal ideation or behavior prior to death by suicide. SN - 0363-0234 AD - Jill E. Lavigne, Wegmans School of Pharmacy, St. John Fisher College, Rochester, NY; Major Michael McCarthy, United States Air Force, Pentagon, Washington, DC; Richard Chapman and Allison Petrilla, IMS Inc., Alexandria, VA and Kerry L. Knox, Department of Psychiatry, University of Rochester, Rochester, NY, USA. U2 - PMID: 22934922. DO - 10.1111/j.1943-278X.2012.00112.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104368984&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2012-30860-004 AN - 2012-30860-004 AU - Stanard, Terry AU - Flach, John M. AU - Smith, Matthew R. H. AU - Warren, Rik T1 - Learning to avoid collisions: A functional state space approach. JF - Ecological Psychology JO - Ecological Psychology JA - Ecol Psychol Y1 - 2012/10// VL - 24 IS - 4 SP - 328 EP - 360 CY - United Kingdom PB - Taylor & Francis SN - 1040-7413 SN - 1532-6969 AD - Flach, John M., Department of Psychology, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH, US N1 - Accession Number: 2012-30860-004. Partial author list: First Author & Affiliation: Stanard, Terry; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Other Publishers: Lawrence Erlbaum. Release Date: 20130218. Correction Date: 20151207. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Ability Level; Avoidance; Decision Making; Learning. Minor Descriptor: Consequence. Classification: Human Experimental Psychology (2300). Population: Human (10); Male (30). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 33. Issue Publication Date: Oct, 2012. Copyright Statement: Taylor & Francis Group, LLC. 2012. AB - Two experiments examined performance in collision avoidance situations. In both experiments participants were asked to initiate a discrete maneuver to avoid a collision at the last possible moment. The affordances of the situations were varied as a function of vehicle dynamics and the functional consequences associated with responding too late or too early. The results were examined in the context of a 2-dimensional functional state space with dimensions associated with optical angle and optical expansion rate. The patterns of performance showed that the actions were consistent with decision rules that could be specified in terms of linear functions of the two optical variables. In most cases, performance at early stages of learning suggested that people were using an Expansion Rate Criterion. With practice, people would tune to a decision rule that was appropriate for the specific vehicle dynamics tested. The results are discussed in relation to the role of three factors in shaping ultimate performance: (a) tasks constraints (i.e., affordances), (b) information constraints (i.e., optical structure), and (c) experience (i.e., learning). (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - collision avoidance KW - optical angle KW - decision rules KW - learning KW - functional consequences KW - 2012 KW - Ability Level KW - Avoidance KW - Decision Making KW - Learning KW - Consequence KW - 2012 DO - 10.1080/10407413.2012.729382 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-30860-004&site=ehost-live&scope=site UR - john.flach@wright.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-25719-008 AN - 2012-25719-008 AU - Lavigne, Jill E. AU - McCarthy, Major Michael AU - Chapman, Richard AU - Petrilla, Allison AU - Knox, Kerry L. T1 - Exposure to prescription drugs labeled for risk of adverse effects of suicidal behavior or ideation among 100 Air Force personnel who died by suicide, 2006–2009. JF - Suicide and Life-Threatening Behavior JO - Suicide and Life-Threatening Behavior JA - Suicide Life Threat Behav Y1 - 2012/10// VL - 42 IS - 5 SP - 561 EP - 566 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0363-0234 SN - 1943-278X AD - Lavigne, Jill E., Wegmans School of Pharmacy, St. John Fisher College, 3690 East Avenue, Rochester, NY, US, 14618 N1 - Accession Number: 2012-25719-008. PMID: 22934922 Other Journal Title: Life-Threatening Behavior; Suicide. Partial author list: First Author & Affiliation: Lavigne, Jill E.; Wegmans School of Pharmacy, St. John Fisher College, Rochester, NY, US. Other Publishers: Behavioral Publications; Guilford Publications; Human Sciences Press, Inc. Release Date: 20121126. Correction Date: 20130610. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Prescription Drugs; Risk Factors; Suicidal Ideation. Classification: Behavior Disorders & Antisocial Behavior (3230); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 6. Issue Publication Date: Oct, 2012. Publication History: Accepted Date: Apr 30, 2012; First Submitted Date: Feb 10, 2012. Copyright Statement: American Association of Suicidology. 2012. AB - Prescription drugs for many indications are labeled with warnings for potential risk of suicidal ideation or behavior. Exposures to prescription drugs labeled for adverse effects of suicidal behavior or ideation among 100 Air Force personnel who died by suicide between 2006 and 2009 are described. Air Force registry data were linked to administrative prescription data. Descriptive statistics illustrate utilization: 89 personnel had a prescription history, 35 filled at least one prescription labeled with a warning, 26 had antidepressants on hand at death, and 2 died by drug overdose. Most airmen were not exposed to any prescriptions labeled for risk of suicidal ideation or behavior prior to death by suicide. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - prescription drugs KW - risk factors KW - suicidal behavior KW - ideation KW - Air Force personnel KW - 2012 KW - Air Force Personnel KW - Prescription Drugs KW - Risk Factors KW - Suicidal Ideation KW - 2012 DO - 10.1111/j.1943-278X.2012.00112.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-25719-008&site=ehost-live&scope=site UR - jlavigne@sjfc.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-27403-002 AN - 2012-27403-002 AU - Steinkraus, Lawrence W. AU - Rayman, Russell B. AU - Butler, William P. AU - Marsh, Royden W. AU - Ercoline, William R. AU - Cowl, Clayton T. T1 - Aeromedical decision making—It may be time for a paradigm change. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2012/10// VL - 83 IS - 10 SP - 1006 EP - 1007 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Steinkraus, Lawrence W., Mayo Clinic, 200 First Street SW, Rochester, MN, US, 55905 N1 - Accession Number: 2012-27403-002. PMID: 23066625 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Steinkraus, Lawrence W.; Division of Preventive, Occupational and Aerospace Medicine, Department of Internal Medicine, Mayo Clinic, Rochester, MN, US. Release Date: 20121217. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aviation; Decision Making; Medical Sciences; Monitoring; Risk Assessment. Minor Descriptor: Cognitive Ability. Classification: Health & Mental Health Services (3370). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 2. Issue Publication Date: Oct, 2012. Copyright Statement: Aerospace Medical Association, Alexandria, VA AB - Recent events in the U-2 and F-22 fleets have challenged aeromedical experts, highlighting the need for better in-flight aircrew physiologic and cognitive monitoring capability. Existing aerospace medicine risk assessment tools, while necessary, are no longer sufficient lo affect positive safety changes given the evolving nature of the aerospace environment. Cognition and its sub-elements are now primary measures for the 'Fit to Fly' decision. We must investigate practical methodologies for determining dynamic aircrew physiologic and cognitive function preflight (selection, retention) and in-flight (selection, retention, performance enhancement). In 2010; a panel of aeromedical experts met to address current paradigms and suggest possible solutions. This commentary briefly summarizes panel findings and recommendations. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - aeromedical decision making KW - paradigm change KW - cognitive monitoring capability KW - risk assessment KW - 2012 KW - Aviation KW - Decision Making KW - Medical Sciences KW - Monitoring KW - Risk Assessment KW - Cognitive Ability KW - 2012 DO - 10.3357/ASEM.3406.2012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-27403-002&site=ehost-live&scope=site UR - Steinkraus.lawrence@mayo.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-26536-012 AN - 2012-26536-012 AU - Yurkiewicz, Ilana R. AU - Lappan, Charles M. AU - Neely, Edward T. AU - Hesselbrock, Roger R. AU - Girard, Philip D. AU - Alphonso, Aimee L. AU - Tsao, Jack W. T1 - Outcomes from a US military neurology and traumatic brain injury telemedicine program. JF - Neurology JO - Neurology Y1 - 2012/09/18/ VL - 79 IS - 12 SP - 1237 EP - 1243 CY - US PB - Lippincott Williams & Wilkins SN - 0028-3878 SN - 1526-632X AD - Tsao, Jack W. N1 - Accession Number: 2012-26536-012. PMID: 22955133 Partial author list: First Author & Affiliation: Yurkiewicz, Ilana R.; Harvard Medical School, Boston, MA, US. Release Date: 20121112. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Neurology; Telemedicine; Traumatic Brain Injury. Minor Descriptor: Military Personnel. Classification: Neurological Disorders & Brain Damage (3297); Health & Mental Health Treatment & Prevention (3300). Population: Human (10). Location: US. Methodology: Literature Review. References Available: Y. Page Count: 7. Issue Publication Date: Sep 18, 2012. Publication History: Accepted Date: May 1, 2012; First Submitted Date: Jun 24, 2011. Copyright Statement: AAN Enterprises, Inc. 2012. AB - Objective: This study evaluated usage of the Army Knowledge Online (AKO) Telemedicine Consultation Program for neurology and traumatic brain injury (TBI) cases in remote overseas areas with limited access to subspecialists. We performed a descriptive analysis of quantity of consults, response times, sites where consults originated, military branches that benefitted, anatomic locations of problems, and diagnoses. Methods: This was a retrospective analysis that searched electronic databases for neurology consults from October 2006 to December 2010 and TBI consults from March 2008 to December 2010. Results: A total of 508 consults were received for neurology, and 131 consults involved TBI. For the most part, quantity of consults increased over the years. Meanwhile, response times decreased, with a mean response time of 8 hours, 14 minutes for neurology consults and 2 hours, 44 minutes for TBI consults. Most neurology consults originated in Iraq (67.59%) followed by Afghanistan (16.84%), whereas TBI consults mainly originated from Afghanistan (40.87%) followed by Iraq (33.91%). The most common consultant diagnoses were headaches, including migraines (52.1%), for neurology cases and mild TBI/concussion (52.3%) for TBI cases. In the majority of cases, consultants recommended in-theater management. After receipt of consultant’s recommendation, 84 known neurology evacuations were facilitated, and 3 known neurology evacuations were prevented. Conclusions: E-mail-based neurology and TBI subspecialty teleconsultation is a viable method for overseas providers in remote locations to receive expert recommendations for a range of neurologic conditions. These recommendations can facilitate medically necessary patient evacuations or prevent evacuations for which on-site care is preferable. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - US military neurology KW - traumatic brain injury KW - telemedicine program KW - diagnosis KW - 2012 KW - Neurology KW - Telemedicine KW - Traumatic Brain Injury KW - Military Personnel KW - 2012 DO - 10.1212/WNL.0b013e31826aac33 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-26536-012&site=ehost-live&scope=site UR - jack.tsao@usuhs.edu DP - EBSCOhost DB - psyh ER - TY - AU - Seversky, L. M.1,2 AU - Yin, L.2 T1 - A Global Parity Measure for Incomplete Point Cloud Data. JO - Computer Graphics Forum JF - Computer Graphics Forum J1 - Computer Graphics Forum PY - 2012/09/10/ Y1 - 2012/09/10/ VL - 31 IS - 7pt1 CP - 7pt1 M3 - Article SP - 2097 EP - 2106 SN - 01677055 AB - Shapes with complex geometric and topological features such as tunnels, neighboring sheets, and cavities are susceptible to undersampling and continue to challenge existing reconstruction techniques. In this work we introduce a new measure for point clouds to determine the likely interior and exterior regions of an object. Specifically, we adapt the concept of parity to point clouds with missing data and introduce the parity map, a global measure of parity over the volume. We first examine how parity changes over the volume with respect to missing data and develop a method for extracting topologically correct interior and exterior crusts for estimating a signed distance field and performing surface reconstruction. We evaluate our approach on real scan data representing complex shapes with missing data. Our parity measure is not only able to identify highly confident interior and exterior regions but also localizes regions of missing data. Our reconstruction results are compared to existing methods and we show that our method faithfully captures the topology and geometry of complex shapes in the presence of missing data. [ABSTRACT FROM AUTHOR] KW - Computer graphics KW - Computer simulation KW - Cloud computing KW - Computational geometry KW - Estimation theory KW - Computer systems KW - Comparative studies KW - I.3.5 [Computer Graphics]: Computational Geometry and Object Modeling- N1 - Accession Number: 82092455; Authors: Seversky, L. M. 1,2; Yin, L. 2; Affiliations: 1: Air Force Research Laboratory, Information Directorate, USA; 2: State University of New York at Binghamton, USA; Subject: Cloud computing; Subject: Computer graphics; Subject: Computational geometry; Subject: Computer simulation; Subject: Estimation theory; Subject: Computer systems; Subject: Comparative studies; Author-Supplied Keyword: I.3.5 [Computer Graphics]: Computational Geometry and Object Modeling-; Number of Pages: 10p; Illustrations: 11 Color Photographs, 1 Chart; Record Type: Article L3 - 10.1111/j.1467-8659.2012.03202.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=asu&AN=82092455&site=ehost-live&scope=site DP - EBSCOhost DB - asu ER - TY - JOUR AU - Allen, Casey AU - Toulson, Elisa AU - Edwards, Tim AU - Lee, Tonghun T1 - Application of a novel charge preparation approach to testing the autoignition characteristics of JP-8 and camelina hydroprocessed renewable jet fuel in a rapid compression machine JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/09// VL - 159 IS - 9 M3 - Article SP - 2780 EP - 2788 SN - 00102180 AB - Abstract: A variety of new, alternative jet fuels are being considered as replacements for conventional petroleum-derived jet fuels, and the autoignition chemistry of these fuels are of prime interest. However, traditional batch-based premixture preparation approaches used in chemical kinetics studies are burdened by the low volatility of these fuels. In this work, a new charge preparation approach is described and characterized in which a fuel and air premixture is created directly in the test chamber of a rapid compression machine. The approach relies on a fuel injector to load a small quantity of fuel into the test chamber with high resolution. Preparation of the test charge directly in the device rather than in a mixing vessel reduces the mixture pressure, and hence the fuel partial pressure and mixture temperature requirements to avoid thermal decomposition of the fuel. Gas chromatography/mass spectrometry is used to confirm that an accurately known mass of JP-8 jet fuel is injected into the rapid compression machine, and that all components of the fuel are evaporated and homogeneously mixed within 2min of the fuel injection, for temperatures from 105°C to 145°C. Ignition delays for JP-8 in air are measured at low temperatures (670–750K) and low pressures (7 and 10bar) and the measurements are compared with literature data. The autoignition characteristics of the bio-based camelina hydroprocessed renewable jet fuel are also measured and contrasted with those of JP-8. Under similar compressed conditions, the camelina hydroprocessed renewable jet fuel ignition properties are distinct from JP-8, which provides motivation for pursuing new test strategies to elicit the autoignition chemistry of alternative jet fuels and other non-volatile fuels. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUEL KW - Pressure KW - Gas chromatography/Mass spectrometry (GC-MS) KW - Jet planes KW - Chemical kinetics KW - Camelina KW - Mixtures KW - Materials -- Compression testing KW - Temperature effect KW - Autoignition KW - Hydroprocessed renewable jet fuel KW - JP-8 KW - Rapid compression machine N1 - Accession Number: 79113796; Allen, Casey 1; Toulson, Elisa 1; Edwards, Tim 2; Lee, Tonghun 1; Email Address: tonghun@msu.edu; Affiliations: 1: Department of Mechanical Engineering, Michigan State University, East Lansing, MI 48824, USA; 2: US Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Issue Info: Sep2012, Vol. 159 Issue 9, p2780; Thesaurus Term: FUEL; Thesaurus Term: Pressure; Thesaurus Term: Gas chromatography/Mass spectrometry (GC-MS); Subject Term: Jet planes; Subject Term: Chemical kinetics; Subject Term: Camelina; Subject Term: Mixtures; Subject Term: Materials -- Compression testing; Subject Term: Temperature effect; Author-Supplied Keyword: Autoignition; Author-Supplied Keyword: Hydroprocessed renewable jet fuel; Author-Supplied Keyword: JP-8; Author-Supplied Keyword: Rapid compression machine; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.combustflame.2012.03.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=79113796&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Rankin, Brent A. AU - Blunck, David L. AU - Katta, Viswanath R. AU - Stouffer, Scott D. AU - Gore, Jay P. T1 - Experimental and computational infrared imaging of bluff body stabilized laminar diffusion flames JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/09// VL - 159 IS - 9 M3 - Article SP - 2841 EP - 2843 SN - 00102180 AB - Abstract: The concept of comparing measured and computed images is extended to the mid-infrared spectrum to provide a non-intrusive technique for studying flames. Narrowband radiation intensity measurements of steady and unsteady bluff body stabilized laminar ethylene diffusion flames are acquired using an infrared camera. Computational infrared images are rendered by solving the radiative transfer equation for parallel lines-of-sight through the flame and using a narrowband radiation model with computed scalar values. Qualitative and quantitative comparisons of the measured and computed infrared images provide insights into the flame stabilization region and beyond. The unique shapes and sizes of the flames observed in the measured and computed infrared images are similar with a few exceptions which are shown to be educational. The important differences occur in the flame stabilization region suggesting improvements in thermal control of the experiment and soot formation and heat loss models. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Infrared imaging KW - Diffusion KW - Stabilizing agents KW - Comparative studies KW - Ethylene KW - Laminar flow KW - Flame KW - Radiative transfer KW - Centerbody KW - Flame radiation KW - Flame stabilization KW - Laminar flames KW - Non-intrusive measurement N1 - Accession Number: 79113802; Rankin, Brent A. 1; Email Address: brankin@purdue.edu; Blunck, David L. 2; Katta, Viswanath R. 3; Stouffer, Scott D. 4; Gore, Jay P. 1; Affiliations: 1: Purdue University, 500 Allison Road, West Lafayette, IN 47907, USA; 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; 3: Innovative Scientific Solutions Inc., 2766 Indian Ripple Road, Dayton, OH 45440, USA; 4: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA; Issue Info: Sep2012, Vol. 159 Issue 9, p2841; Thesaurus Term: Infrared imaging; Thesaurus Term: Diffusion; Thesaurus Term: Stabilizing agents; Thesaurus Term: Comparative studies; Thesaurus Term: Ethylene; Subject Term: Laminar flow; Subject Term: Flame; Subject Term: Radiative transfer; Author-Supplied Keyword: Centerbody; Author-Supplied Keyword: Flame radiation; Author-Supplied Keyword: Flame stabilization; Author-Supplied Keyword: Laminar flames; Author-Supplied Keyword: Non-intrusive measurement; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.combustflame.2012.03.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=79113802&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Kostka, Stanislav AU - Lynch, Amy C. AU - Huelskamp, Bethany C. AU - Kiel, Barry V. AU - Gord, James R. AU - Roy, Sukesh T1 - Characterization of flame-shedding behavior behind a bluff-body using proper orthogonal decomposition JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/09// VL - 159 IS - 9 M3 - Article SP - 2872 EP - 2882 SN - 00102180 AB - Abstract: Researchers have been interested in bluff-body flame-shedding dynamics and the effects of vortex shedding for the past few decades. The objective of the present study is to quantify various modes of vortex shedding as flames transition from near-blow-off to stable and acoustically coupled conditions. Two modes of shedding, Kelvin–Helmholtz and Von-Karman, play a significant role in flame stability. Previous studies have been limited to visual identification of the contributions from each of these modes without quantitatively addressing the contribution from each mode as the flame transitions from blow-off to a stable or acoustically coupled state. The present study is focused on quantitatively identifying the contribution of various instability modes for three 1.5-in. flame-holder configurations and is performed in an augmentor test rig employing propane and air as fuel and oxidizer, respectively. The quantitative identification of instability modes is performed by implementing proper orthogonal decomposition (POD) on high-speed chemiluminescence imaging for various flame configurations. The application of POD provides an objective means of examining contributions from asymmetric, symmetric, and uncorrelated spatial shedding modes. To determine trends, equivalence ratios are set to 1.1 and then stepped down until blow-off. Acoustically coupled flames are observed to be dominated by contributions from the symmetric shedding mode. As flames decouple from rig acoustics, they exhibit increased combinations of asymmetric and uncorrelated shedding behavior, depending on flow conditions. The methodology can also be extended to other measurement techniques such as high-speed particle-image velocimetry, planar laser-induced fluorescence, and numerical simulations as a means of studying bluff-body flames. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Numerical analysis KW - Simulation methods & models KW - Flame stability KW - Orthogonal decompositions KW - Vortex shedding KW - Quantitative research KW - Chemiluminescence KW - Oxidizing agents KW - Proper orthogonal decomposition (POD) N1 - Accession Number: 79113805; Kostka, Stanislav 1; Email Address: stanislavkostka@snet.net; Lynch, Amy C. 2; Huelskamp, Bethany C. 3; Kiel, Barry V. 2; Gord, James R. 2; Roy, Sukesh 1; Affiliations: 1: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, OH 45431, United States; 2: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433, United States; 3: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, OH 45440, United States; Issue Info: Sep2012, Vol. 159 Issue 9, p2872; Thesaurus Term: Numerical analysis; Thesaurus Term: Simulation methods & models; Subject Term: Flame stability; Subject Term: Orthogonal decompositions; Subject Term: Vortex shedding; Subject Term: Quantitative research; Subject Term: Chemiluminescence; Subject Term: Oxidizing agents; Author-Supplied Keyword: Proper orthogonal decomposition (POD); Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.combustflame.2012.03.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=79113805&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Long, Sheri Spaine1,2 T1 - Professional Associations as "Canon" for Graduate Education. JO - Hispania JF - Hispania J1 - Hispania PY - 2012/09// Y1 - 2012/09// VL - 95 IS - 3 CP - 3 M3 - Article SP - 2 EP - 3 SN - 00182133 AB - The article offers the author's insights on the role of professional literature associations in pre-professional education. She says that professional associations offer their members with the broadest view of state of languages field; thus, expose them to newer pedagogies, curricular trends, and refocused content. She also relates her experience of being mentored in the publication procedures, saying that professional associations give graduate students the strategies for publication process. KW - Professional education KW - Language & languages -- Study & teaching KW - Graduate students KW - Professional associations KW - Literature -- Societies, etc. N1 - Accession Number: 82191044; Authors:Long, Sheri Spaine 1,2; Affiliations: 1: United States Air Force Academy, USA; 2: University of Alabama at Birmingham, USA; Subject: Professional associations; Subject: Literature -- Societies, etc.; Subject: Professional education; Subject: Language & languages -- Study & teaching; Subject: Graduate students; Number of Pages: 2p; Record Type: Article L3 - 10.1353/hpn.2012.0097 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=82191044&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR AU - Ali, Saba Rasheed1 AU - Yang, Ling-Yan2 AU - Button, Christopher J.3 AU - McCoy, Thomasin T. H.2 T1 - Career Education Programming in Three Diverse High Schools: A Critical Psychology—Case Study Research Approach. JO - Journal of Career Development (Sage Publications Inc. ) JF - Journal of Career Development (Sage Publications Inc. ) J1 - Journal of Career Development (Sage Publications Inc. ) PY - 2012/09// Y1 - 2012/09// VL - 39 IS - 4 CP - 4 M3 - Article SP - 357 EP - 385 SN - 08948453 AB - From a critical psychology perspective, Prilleltensky and Nelson advocate for research that has explicit focus on social change and can allow for full participation and empowerment of those under study. The current article describes the collaborative development, implementation, and evaluation of a career education program within three ethnically and economically diverse rural high schools. Using case study methodology, the authors examined the effects of the “A Future in Iowa Career Education” (FICE) program using three different sources of data (pre–post test results, student evaluations, and focus groups). Context-specific results indicated the program was associated with increases in self-efficacy and career aspirations and had practical strengths and weaknesses. Results are discussed in terms of current literature and practical implications are provided. [ABSTRACT FROM AUTHOR] KW - Career education KW - High schools KW - Critical psychology KW - Case studies KW - Social change KW - Self-efficacy N1 - Accession Number: 77921125; Authors:Ali, Saba Rasheed 1; Yang, Ling-Yan 2; Button, Christopher J. 3; McCoy, Thomasin T. H. 2; Affiliations: 1: University of Iowa, Iowa City, IA, USA saba-ali@uiowa.edu; 2: University of Iowa, Iowa City, IA, USA; 3: United States Air Force, Wichita Air Force Base, Wichita Falls, TX, USA; Subject: Career education; Subject: High schools; Subject: Critical psychology; Subject: Case studies; Subject: Social change; Subject: Self-efficacy; Author-Supplied Keyword: career education; Author-Supplied Keyword: career interventions; Author-Supplied Keyword: case study methodology; Author-Supplied Keyword: critical psychology; Author-Supplied Keyword: Latino youth; Number of Pages: 29p; Record Type: Article; Full Text Word Count: 11023 L3 - 10.1177/0894845311398131 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=77921125&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR ID - 2012-24794-006 AN - 2012-24794-006 AU - Tovar‐Murray, Darrick AU - Jenifer, Ericka S. AU - Andrusyk, Jara AU - D'Angelo, Ryan AU - King, Tia T1 - Racism‐related stress and ethnic identity as determinants of African American college students' career aspirations. JF - The Career Development Quarterly JO - The Career Development Quarterly JA - Career Dev Q Y1 - 2012/09// VL - 60 IS - 3 SP - 254 EP - 262 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0889-4019 SN - 2161-0045 AD - Tovar‐Murray, Darrick, College of Education, DePaul University, 2320 North Kenmore Avenue, Chicago, IL, US, 60614-3250 N1 - Accession Number: 2012-24794-006. Other Journal Title: Vocational Guidance Quarterly. Partial author list: First Author & Affiliation: Tovar‐Murray, Darrick; College of Education, DePaul University, Chicago, IL, US. Other Publishers: American Counseling Assn. Release Date: 20121015. Correction Date: 20130520. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: College Students; Ethnic Identity; Occupational Aspirations; Racism; Stress. Classification: Classroom Dynamics & Student Adjustment & Attitudes (3560). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Tests & Measures: Global Racism Scale; Black Racial Identity Scale; Perceived Racism Scale; Career Aspiration Scale; Multigroup Ethnic Identity Measure DOI: 10.1037/t00335-000; Index of Race-Related Stress—Brief Version DOI: 10.1037/t07324-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 9. Issue Publication Date: Sep, 2012. Publication History: Accepted Date: Jul 21, 2011; Revised Date: Apr 29, 2011; First Submitted Date: Jan 13, 2011. Copyright Statement: All rights reserved. The National Career Development Association. 2012. AB - Drawing primarily on the construct of psychological buffer, the purpose of this study was to explore the extent to which racism-related stress and ethnic identity are determinants of career aspirations. A total of 163 African American college students from a predominately White Midwestern university participated in the study. A moderation regression analysis was conducted. Results indicate that ethnic identity interacted with racism-related stress (p = .04) to predict career aspirations. In other words, as racism-related stress increases in the context of low identity development, career aspirations decrease. Conversely, as perceived racism increases in the context of high identity development, career aspirations increase. Implications for professionals and future research in the field of career counseling are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - racism-related stress KW - ethnic identity KW - college students KW - career aspirations KW - 2012 KW - College Students KW - Ethnic Identity KW - Occupational Aspirations KW - Racism KW - Stress KW - 2012 DO - 10.1002/j.2161-0045.2012.00021.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-24794-006&site=ehost-live&scope=site UR - dtovarmu@depaul.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-06124-006 AN - 2013-06124-006 AU - Zorn, Michelle L. AU - Martin, John A. AU - Combs, James G. T1 - Lone-insider boards: Improved monitoring or a recipe for disaster? JF - Journal of Managerial Issues JO - Journal of Managerial Issues Y1 - 2012///Fal 2012 VL - 24 IS - 3 SP - 345 EP - 362 CY - US PB - Journal of Managerial Issues SN - 1045-3695 SN - 2328-7470 N1 - Accession Number: 2013-06124-006. Partial author list: First Author & Affiliation: Zorn, Michelle L.; Florida State University, Tallahassee, FL, US. Release Date: 20130415. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Disasters; Monitoring; Organizational Effectiveness; Top Level Managers. Minor Descriptor: Occupational Stress. Classification: Industrial & Organizational Psychology (3600). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 18. Issue Publication Date: Fal 2012. AB - Boards have become increasingly independent, to the point where some firms have removed all of the insiders except for the CEO. The authors call this phenomenon a 'lone-insider board' and submit that it constitutes a fundamentally distinct governance arrangement worthy of inquiry. This paper describes institutional pressures that give rise to increasing reliance on lone-insider boards, and investigates likely outcomes. According to agency theory, the greater the proportion of independent directors, the more effective boards are in monitoring CEOs. The authors submit, however, that a lone-insider board creates a fundamental shift in board effectiveness due to a loss of mutual monitoring and an increase in information asymmetry. Mutual monitoring occurs when members of the top management team actively monitor the CEO. Information asymmetry refers to the disparity in knowledge between the (TO and the board of directors. The authors propose that reduced mutual monitoring causes increased information asymmetry between the CEO and the board and increases rather than decreases CEO power. The authors hope this article will stimulate fruitful inquiry in the area of lone-insider boards. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - monitoring KW - disaster KW - chief executive officer KW - lone insider board KW - work pressure KW - organizational effectiveness KW - disparity KW - 2012 KW - Disasters KW - Monitoring KW - Organizational Effectiveness KW - Top Level Managers KW - Occupational Stress KW - 2012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-06124-006&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-20625-020 AN - 2012-20625-020 AU - Kwak, Jae AU - Grigsby, Claude C. AU - Rizki, Mateen M. AU - Preti, George AU - Köksal, Mustafa AU - Josue, Jesusa AU - Yamazaki, Kunio AU - Beauchamp, Gary K. T1 - Differential binding between volatile ligands and major urinary proteins due to genetic variation in mice. JF - Physiology & Behavior JO - Physiology & Behavior JA - Physiol Behav Y1 - 2012/08/20/ VL - 107 IS - 1 SP - 112 EP - 120 CY - Netherlands PB - Elsevier Science SN - 0031-9384 AD - Kwak, Jae, Monell Chemical Senses Center, 3500 Market Street, Philadelphia, PA, US, 19104 N1 - Accession Number: 2012-20625-020. PMID: 22728785 Partial author list: First Author & Affiliation: Kwak, Jae; Monell Chemical Senses Center, Philadelphia, PA, US. Release Date: 20120910. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Genetics; Mice; Proteins; Urine; Ligand. Minor Descriptor: Spectroscopy. Classification: Physiological Psychology & Neuroscience (2500). Population: Animal (20); Male (30). Methodology: Empirical Study; Quantitative Study. Supplemental Data: Tables and Figures Internet. References Available: Y. Page Count: 9. Issue Publication Date: Aug 20, 2012. Publication History: Accepted Date: Jun 12, 2012; Revised Date: May 23, 2012; First Submitted Date: Mar 5, 2012. Copyright Statement: All rights reserved. Elsevier Inc. 2012. AB - Two different structural classes of chemical signals in mouse urine, i.e., volatile organic compounds (VOCs) and the major urinary proteins (MUPs), interact closely because MUPs sequester VOCs. Although qualitative and/or quantitative differences in each chemical class have been reported, previous studies have examined only one of the classes at a time. No study has analyzed these two sets simultaneously, and consequently binding interactions between volatile ligands and proteins in urines of different strains have not been compared. Here, we compared the release of VOCs in male urines of three different inbred strains (C57BL/6J, BALB/b and AKR) before and after denaturation of urinary proteins, mainly MUPs. Both MUP and VOC profiles were distinctive in the intact urine of each strain. Upon denaturation, each of the VOC profiles changed due to the release of ligands previously bound to MUPs. The results indicate that large amounts of numerous ligands are bound to MUPs and that these ligands represent a variety of different structural classes of VOCs. Furthermore, the degree of release in each ligand was different in each strain, indicating that different ligands are differentially bound to proteins in the urines of different strains. Therefore, these data suggest that binding interactions in ligands and MUPs differ between strains, adding yet another layer of complexity to chemical communication in mice. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - differential binding KW - major urinary proteins KW - volatile ligands KW - gas chromatography-mass spectrometry KW - metabolite differentiation & discovery lab KW - sodium dodecyl sulfate–polyacrylamide gel electrophoresis KW - isoelectric focusing gel electrophoresis KW - 2012 KW - Genetics KW - Mice KW - Proteins KW - Urine KW - Ligand KW - Spectroscopy KW - 2012 U1 - Sponsor: UES. Grant: FA8650-10-C-6152. Other Details: Under Air Force prime. Recipients: No recipient indicated U1 - Sponsor: US Army Research Office, US. Grant: W911NF-11-1-0087. Recipients: No recipient indicated DO - 10.1016/j.physbeh.2012.06.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-20625-020&site=ehost-live&scope=site UR - UR - ORCID: 0000-0003-4216-2019 UR - beauchamp@monell.org UR - yamazaki@monell.org UR - jjosue@monell.org UR - mkoksal@sas.upenn.edu UR - preti@pobox.upenn.edu UR - mateen.rizki@wright.edu UR - Claude.Grigsby@wpafb.af.mil UR - jkwak@monell.org DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Woo, Myung-Heui AU - Grippin, Adam AU - Anwar, Diandra AU - Smith, Tamara AU - Wu, Chang-Yu AU - Wander, Joseph D. T1 - Effects of Relative Humidity and Spraying Medium on UV Decontamination of Filters Loaded with Viral Aerosols. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2012/08/15/ VL - 78 IS - 16 M3 - Article SP - 5781 EP - 5787 SN - 00992240 AB - Although respirators and filters are designed to prevent the spread of pathogenic aerosols, a stockpile shortage is anticipated during the next flu pandemic. Contact transfer and reaerosolization of collected microbes from used respirators are also a concern. An option to address these potential problems is UV irradiation, which inactivates microbes by dimerizing thymine/uracU in nucleic acids. The objective of this study was to determine the effects of transmission mode and environmental conditions on decontamination efficiency by UV. In this study, filters were contaminated by different transmission pathways (droplet and aerosol) using three spraying media (deionized water [DI], beef extract [BE], and artificial saliva [AS]) under different humidity levels (30% [low relative humidity {LRH}], 60% [MRH], and 90% [HRH]). UV irradiation at constant intensity was applied for two time intervals at each relative humidity condition. The highest inactivation efficiency (IE), around 5.8 logs, was seen for DI aerosols containing MS2 on filters at LRH after applying a UV intensity of 1.0 mW/cm2 for 30 min. The IE of droplets containing MS2 was lower than that of aerosols containing MS2. Absorption of UV by high water content and shielding of viruses near the center of the aggregate are considered responsible for this trend. Across the different media, lEs in AS and in BE were much lower than in DI for both aerosol and droplet transmission, indicating that solids present in AS and BE exhibited a protective effect. For particles sprayed in a protective medium, RH is not a significant parameter. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Humidity KW - Spraying KW - Ultraviolet radiation KW - Biological decontamination KW - Filters & filtration KW - Aerosols (Sprays) KW - Nucleic acids N1 - Accession Number: 78412388; Woo, Myung-Heui 1; Grippin, Adam 2; Anwar, Diandra 2; Smith, Tamara 1; Wu, Chang-Yu 1; Email Address: cywu@ufl.edu; Wander, Joseph D. 3; Affiliations: 1: Department of Environmental Engineering Sciences, University of Fiorida, Gainesviiie, Fiorida, USA; 2: Department of Chemicai Engineering, University of Fiorida, Gainesville, Florida, USA; 3: Air Force Research Laboratory, Tyndall Air Force Base, Florida, USA; Issue Info: Aug2012, Vol. 78 Issue 16, p5781; Thesaurus Term: Humidity; Thesaurus Term: Spraying; Thesaurus Term: Ultraviolet radiation; Thesaurus Term: Biological decontamination; Thesaurus Term: Filters & filtration; Thesaurus Term: Aerosols (Sprays); Thesaurus Term: Nucleic acids; Number of Pages: 7p; Document Type: Article L3 - 10.1128/AEM.00455-12 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=78412388&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Miracolo, Marissa A. AU - Drozd, Greg T. AU - Jathar, Shantanu H. AU - Presto, Albert A. AU - Lipsky, Eric M. AU - Corporan, Edwin AU - Robinson, Allen L. T1 - Fuel Composition and Secondary Organic Aerosol Formation: Gas-Turbine Exhaust and Alternative Aviation Fuels. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2012/08/07/ VL - 46 IS - 15 M3 - Article SP - 8493 EP - 8501 SN - 0013936X AB - A series of smog chamber experiments were performed to investigate the effects of fuel composition on secondary particulate matter (PM) formation from dilute exhaust from a T63 gas-turbine engine. Tests were performed at idle and cruise loads with the engine fueled on conventional military jet fuel (JP-8), Fischer-Tropsch synthetic jet fuel (FT), and a 50/50 blend of the two fuels. Emissions were sampled into a portable smog chamber and exposed to sunlight or artificial UV light to initiate photo-oxidation. Similar to previous studies, neat FT fuel and a 50/50 FT/JP-8 blend reduced the primary particulate matter emissions compared to neat JP-8. After only one hour of photo-oxidation at typical atmospheric OH levels, the secondary PM production in dilute exhaust exceeded primary PM emissions, except when operating the engine at high load on FT fuel. Therefore, accounting for secondary PM production should be considered when assessing the contribution of gas-turbine engine emissions to ambient PM levels. FT fuel substantially reduced secondary PM formation in dilute exhaust compared to neat JP-8 at both idle and cruise loads. At idle load, the secondary PM formation was reduced by a factor of 20 with the use of neat FT fuel, and a factor of 2 with the use of the blend fuel. At cruise load, the use of FT fuel resulted in no measured formation of secondary PM. In every experiment, the secondary PM was dominated by organics with minor contributions from sulfate when the engine was operated on JP-8 fuel. At both loads, FT fuel produces less secondary organic aerosol than JP-8 because of differences in the composition of the fuels and the resultant emissions. This work indicates that fuel reformulation may be a viable strategy to reduce the contribution of emissions from combustion systems to secondary organic aerosol production and ultimately ambient PM levels. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Atmospheric aerosols KW - Particulate matter KW - Gas turbines -- Exhaust gas KW - FUEL KW - Alternative fuels KW - Aircraft exhaust emissions KW - Airplanes KW - ENVIRONMENTAL aspects KW - Aircraft gas turbines KW - Photooxidation KW - Reformulated gasoline -- Environmental aspects N1 - Accession Number: 78583237; Miracolo, Marissa A. 1; Drozd, Greg T. 1; Jathar, Shantanu H. 1; Presto, Albert A. 1; Lipsky, Eric M. 2; Corporan, Edwin 3; Robinson, Allen L. 1; Email Address: alr@andrew.cmu.edu; Affiliations: 1: Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States; 2: Penn State Greater Allegheny, McKeesport, Pennsylvania 15132, United States; 3: U.S. Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio 45460, United States; Issue Info: 8/7/2012, Vol. 46 Issue 15, p8493; Thesaurus Term: Atmospheric aerosols; Thesaurus Term: Particulate matter; Thesaurus Term: Gas turbines -- Exhaust gas; Thesaurus Term: FUEL; Thesaurus Term: Alternative fuels; Thesaurus Term: Aircraft exhaust emissions; Subject Term: Airplanes; Subject Term: ENVIRONMENTAL aspects; Subject Term: Aircraft gas turbines; Subject Term: Photooxidation; Subject Term: Reformulated gasoline -- Environmental aspects; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 454310 Fuel Dealers; NAICS/Industry Codes: 454319 Other fuel dealers; Number of Pages: 9p; Document Type: Article L3 - 10.1021/es300350c UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=78583237&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Stöhr, Michael AU - Boxx, Isaac AU - Carter, Campbell D. AU - Meier, Wolfgang T1 - Experimental study of vortex-flame interaction in a gas turbine model combustor JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/08// VL - 159 IS - 8 M3 - Article SP - 2636 EP - 2649 SN - 00102180 AB - Abstract: The interaction of a helical precessing vortex core (PVC) with turbulent swirl flames in a gas turbine model combustor is studied experimentally. The combustor is operated with air and methane at atmospheric pressure and thermal powers from 10 to 35kW. The flow field is measured using particle image velocimetry (PIV), and the dominant unsteady vortex structures are determined using proper orthogonal decomposition. For all operating conditions, a PVC is detected in the shear layer of the inner recirculation zone (IRZ). In addition, a co-rotating helical vortex in the outer shear layer (OSL) and a central vortex originating in the exhaust tube are found. OH chemiluminescence (CL) images show that the flames are mainly stabilized in the inner shear layer (ISL), where also the PVC is located. Phase-averaged images of OH-CL show that for all conditions, a major part of heat release takes place in a helical zone that is coupled to the PVC. The mechanisms of the interaction between PVC and flame are then studied for the case P =10kW using simultaneous PIV and OH-PLIF measurements with a repetition rate of 5kHz. The measurements show that the PVC causes a regular sequence of flame roll-up, mixing of burned and unburned gas, and subsequent ignition of the mixture in the ISL. These effects are directly linked to the periodic vortex motions. A phase-averaged analysis of the flow field further shows that the PVC induces an unsteady lower stagnation point that is not present in the average flow field. The motion of the stagnation point is linked to the periodic precession of the PVC. Near this point burned and unburned gas collide frontally and a significant amount of heat release takes place. The flame dynamics near this point is also coupled to the PVC. In this way, a part of the reaction zone is periodically drawn from the stagnation point into the ISL, and thus serves as an ignition source for the reactions in this layer. In total, the effects in the ISL and at the stagnation point showed that the PVC plays an essential role in the stabilization mechanism of the turbulent swirl flames. In contrast to the PVC, the vortices in the OSL and near the exhaust tube have no direct effect on the flame since they are located outside the flame zone. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMBUSTION chambers KW - Mathematical models KW - Atmospheric pressure KW - Vortex motion KW - Flame KW - Gas turbines KW - Particle image velocimetry KW - Chemiluminescence KW - Shear flow KW - Gas turbine combustion KW - Laser diagnostics KW - Precessing vortex core KW - Turbulent swirl flame N1 - Accession Number: 76617813; Stöhr, Michael 1; Email Address: michael.stoehr@dlr.de; Boxx, Isaac 1; Carter, Campbell D. 2; Meier, Wolfgang 1; Affiliations: 1: German Aerospace Center (DLR), Institute of Combustion Technology, Pfaffenwaldring 38-40, 70569 Stuttgart, Germany; 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA; Issue Info: Aug2012, Vol. 159 Issue 8, p2636; Thesaurus Term: COMBUSTION chambers; Thesaurus Term: Mathematical models; Thesaurus Term: Atmospheric pressure; Thesaurus Term: Vortex motion; Subject Term: Flame; Subject Term: Gas turbines; Subject Term: Particle image velocimetry; Subject Term: Chemiluminescence; Subject Term: Shear flow; Author-Supplied Keyword: Gas turbine combustion; Author-Supplied Keyword: Laser diagnostics; Author-Supplied Keyword: Precessing vortex core; Author-Supplied Keyword: Turbulent swirl flame; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.combustflame.2012.03.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=76617813&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - AU - Berger, Matthew1,2 AU - Silva, Claudio T.3 T1 - Nonrigid Matching of Undersampled Shapes via Medial Diffusion. JO - Computer Graphics Forum JF - Computer Graphics Forum J1 - Computer Graphics Forum PY - 2012/08// Y1 - 2012/08// VL - 31 IS - 5 CP - 5 M3 - Article SP - 1587 EP - 1596 SN - 01677055 AB - We introduce medial diffusion for the matching of undersampled shapes undergoing a nonrigid deformation. We construct a diffusion process with respect to the medial axis of a shape, and use the quantity of heat diffusion as a measure which is both tolerant of missing data and approximately invariant to nonrigid deformations. A notable aspect of our approach is that we do not define the diffusion on the shape's medial axis, or similar medial representation. Instead, we construct the diffusion process directly on the shape. This permits the diffusion process to better capture surface features, such as varying spherical and cylindrical parts, as well as combine with other surface-based diffusion processes. We show how to use medial diffusion to detect intrinsic symmetries, and for computing correspondences between pairs of shapes, wherein shapes contain substantial missing data. [ABSTRACT FROM AUTHOR] KW - Deformations (Mechanics) KW - Technology transfer KW - Elastic solids KW - Structural failures KW - Deformation of surfaces KW - Continuum mechanics KW - I.3.3 [Computer Graphics]: Picture/Image Generation-Line and curve generation N1 - Accession Number: 78321732; Authors: Berger, Matthew 1,2; Silva, Claudio T. 3; Affiliations: 1: University of Utah; 2: Air Force Research Laboratory, Information Directorate; 3: Polytechnic Institute of New York University; Subject: Deformations (Mechanics); Subject: Technology transfer; Subject: Elastic solids; Subject: Structural failures; Subject: Deformation of surfaces; Subject: Continuum mechanics; Author-Supplied Keyword: I.3.3 [Computer Graphics]: Picture/Image Generation-Line and curve generation; Number of Pages: 10p; Illustrations: 8 Color Photographs, 2 Diagrams, 1 Graph; Record Type: Article L3 - 10.1111/j.1467-8659.2012.03164.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=asu&AN=78321732&site=ehost-live&scope=site DP - EBSCOhost DB - asu ER - TY - JOUR AU - Adiga, Umesh AU - Bell, Brian L. AU - Ponomareva, Larissa AU - Taylor, Debbie AU - Saldanha, Roland AU - Nelson, Sandra AU - Lamkin, Thomas J. T1 - Mapping Infected Cell Phenotype. JO - IEEE Transactions on Biomedical Engineering JF - IEEE Transactions on Biomedical Engineering Y1 - 2012/08// VL - 59 IS - 8 M3 - Article SP - 2362 EP - 2371 SN - 00189294 AB - Quantitative modeling of the phenotypic changes in the host cell during the bacterial infection makes it possible to explore an empirical relation between the infection stages and the quantifiable host-cell phenotype. A statistically reliable model of this relation can facilitate therapeutic defense against threats due to natural and genetically engineered bacterium. In the preliminary experiment, we have collected several thousand cell images over a period of 72 h of infection with a 2-h sampling frequency that covers various stages of infection by Francisella tularenesis (Ft). Segmentation of macrophages in images was accomplished using a fully automatic, parallel region growing technique. Over two thousand feature descriptors for the host cell were calculated. Multidimensional scaling, followed by hierarchical clustering, was used to group the cells. Preliminary results show that the host-cell phenotype, as defined by the set of measureable features, groups into different classes that can be mapped to the stages of infection. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Biomedical Engineering is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - QUANTITATIVE research KW - PHENOTYPE KW - BACTERIAL diseases KW - INFECTION KW - FRANCISELLA tularensis KW - IMAGE analysis KW - Biodefense KW - bioimaging KW - Fluorescence KW - high content screening KW - image analytics KW - Image segmentation KW - Imaging KW - infection KW - Manuals KW - Microorganisms KW - Shape N1 - Accession Number: 77875266; Adiga, Umesh 1; Bell, Brian L. 2; Ponomareva, Larissa 3; Taylor, Debbie 4; Saldanha, Roland 1; Nelson, Sandra 3; Lamkin, Thomas J. 4; Affiliations: 1: UES, Inc., Dayton, USA; 2: Bristol Myers Squib, Syracuse, USA; 3: Drug Discovery Center, University of Cincinnati, Cincinnati, USA; 4: Air Force Research Laboratory , Wright Patterson Air Force Base, Dayton, USA; Issue Info: Aug2012, Vol. 59 Issue 8, p2362; Thesaurus Term: RESEARCH; Thesaurus Term: QUANTITATIVE research; Subject Term: PHENOTYPE; Subject Term: BACTERIAL diseases; Subject Term: INFECTION; Subject Term: FRANCISELLA tularensis; Subject Term: IMAGE analysis; Author-Supplied Keyword: Biodefense; Author-Supplied Keyword: bioimaging; Author-Supplied Keyword: Fluorescence; Author-Supplied Keyword: high content screening; Author-Supplied Keyword: image analytics; Author-Supplied Keyword: Image segmentation; Author-Supplied Keyword: Imaging; Author-Supplied Keyword: infection; Author-Supplied Keyword: Manuals; Author-Supplied Keyword: Microorganisms; Author-Supplied Keyword: Shape; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TBME.2012.2204746 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=77875266&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Fleming, Timothy P. AU - Lambrecht, Michael R. AU - Mardahl, Peter J. AU - Keisling, John D. T1 - A High-Efficiency Megawatt-Class Nonrelativistic Magnetron. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2012/08// Y1 - 2012/08// VL - 40 IS - 8 M3 - Article SP - 2112 EP - 2118 SN - 00933813 AB - Numerical simulations of a prototype conventional magnetron capable of an RF output power exceeding 1.3 MW at peak efficiency greater than 87% for relatively low diode voltages of \sim40 kV are presented. Virtual prototyping of the magnetron design is carried out on massively parallel architecture utilizing the 3-D improved concurrent electromagnetic particle-in-cell code. Simulations demonstrate that the magnetron is capable of stable and robust oscillations in the \pi mode at saturation with negligible mode competition at 912 MHz over a range of magnetic fields extending from B = 0.18\ \T to B = 0.275\ \T and voltages ranging from 37–56 kV. RF Output power ranged from 400 kW–1.5 MW over these voltages with efficiencies typically above 85%. Oscillations in the \pi mode follow the Buneman–Hartree resonance curve for all magnetic fields sampled with a window of \pi-mode oscillations typically extending over 6 kV. Electron back bombardment of the cathode as well as collisions with the slow wave structure acted as major loss mechanisms. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - ELECTRIC oscillators KW - MICROWAVES KW - ELECTRIC waves KW - DIODES N1 - Accession Number: 79890349; Source Information: Aug2012, Vol. 40 Issue 8, p2112; Subject Term: MAGNETRONS; Subject Term: ELECTRIC oscillators; Subject Term: MICROWAVES; Subject Term: ELECTRIC waves; Subject Term: DIODES; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TPS.2012.2205274 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=79890349&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Andreev, Andrey D. AU - Hendricks, Kyle J. T1 - Metamaterial-Like Cathodes in Multicavity Magnetrons. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2012/08// Y1 - 2012/08// VL - 40 IS - 8 M3 - Article SP - 2267 EP - 2273 SN - 00933813 AB - This paper presents the results of computer simulations performed for exploring and developing new methods, which may allow enhancing operational parameters of multicavity magnetrons through using the metal-thin-wire (MTW) and the metal-split-ring metamaterial-like structures as cold (nonthermionic) cathodes. It is demonstrated by the particle-in-cell simulations of a generic ten-vane nonrelativistic ultrahigh-frequency-band heavily strapped magnetron that the output microwave power and the start-up time of this magnetron are significantly improved by replacing either a solid or a transparent cold cathode by, for example, a bulk MTW metamaterial-like structure formed as an array of individual wires directed parallel to the axis of the magnetron (rodded cathode). [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER simulation KW - MAGNETRONS KW - ELECTRIC oscillators KW - METAMATERIALS KW - COMPOSITE materials KW - CATHODES N1 - Accession Number: 79890352; Source Information: Aug2012, Vol. 40 Issue 8, p2267; Subject Term: COMPUTER simulation; Subject Term: MAGNETRONS; Subject Term: ELECTRIC oscillators; Subject Term: METAMATERIALS; Subject Term: COMPOSITE materials; Subject Term: CATHODES; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TPS.2012.2206615 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=79890352&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Stinco, P. AU - Greco, M.S. AU - Gini, F. AU - Rangaswamy, M. T1 - Ambiguity function and Cramér-Rao bounds for universal mobile telecommunications system-based passive coherent location systems. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2012/08// VL - 6 IS - 7 M3 - Article SP - 668 EP - 678 SN - 17518784 AB - The concerns are with the calculation of monostatic and bistatic ambiguity function (AF) of a quadrature phase shift keying (QPSK) signal where the pulses are shaped with a root raised cosine (RRC) filter. The monostatic and bistatic modified Cramér-Rao lower bounds (MCRLBs) for the estimation of target range and velocity are also derived and analysed. The QPSK modulation is used in the downlink of a universal mobile telecommunications system (UMTS) base station, hence the results of our analysis provide a useful tool to asses the performance of a passive coherent location (PCL) system where the non-co-operative transmitter of opportunity is a UMTS base station. The actual growing coverage of UMTS signals on the international territory makes multistatic radar configuration feasible, therefore these results can also be exploited for the dynamical selection of the transmitter in a multistatic radar system where multiple UMTS base stations are used. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERFORMANCE evaluation KW - BOUNDS (Mathematics) KW - NUMERICAL calculations KW - UNIVERSAL Mobile Telecommunications System KW - RADAR transmitters KW - PHASE shift keying N1 - Accession Number: 78083890; Stinco, P. 1; Greco, M.S. 1; Gini, F. 1; Rangaswamy, M. 2; Affiliations: 1: University of Pisa, Dip. di Ingegneria dell'Informazione, Pisa, Italia; 2: Air Force Research Laboratory, USA; Issue Info: Aug2012, Vol. 6 Issue 7, p668; Thesaurus Term: PERFORMANCE evaluation; Subject Term: BOUNDS (Mathematics); Subject Term: NUMERICAL calculations; Subject Term: UNIVERSAL Mobile Telecommunications System; Subject Term: RADAR transmitters; Subject Term: PHASE shift keying; Number of Pages: 11p; Document Type: Article L3 - 10.1049/iet-rsn.2011.0390 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=78083890&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR T1 - Learning from Each Other: Staying Current in the Field. AU - Greener, Trent AU - Peterson, Andrew AU - Pinske, Kim JO - Strength & Conditioning Journal (Lippincott Williams & Wilkins) JF - Strength & Conditioning Journal (Lippincott Williams & Wilkins) Y1 - 2012/08// VL - 34 IS - 4 SP - 87 EP - 88 SN - 15241602 N1 - Accession Number: 78550958; Author: Greener, Trent: 1 Author: Peterson, Andrew: 2 Author: Pinske, Kim: 3 ; Author Affiliation: 1 Athletic Department, University of Wyoming, Laramie, Wyoming: 2 Athletic Department, Humboldt State University, Arcata, California: 3 Athletic Department, United States Air Force Academy, Colorado Springs, Colorado; No. of Pages: 2; Language: English; Publication Type: Article; Update Code: 20120816 N2 - The article offers the author's perspective on the ways on how strength and conditioning coaches can stay updated with the latest information about the field. The author mentions that the Internet has helped in providing instant information and updates to coaches. He emphasizes the need for the coaches to visit and observe other programs and to visit and observe other practitioners to broaden their knowledge. He also suggests the importance of attending conferences and seminars. KW - *COACHES (Athletics) KW - *INTERNET KW - *PHYSICAL training & conditioning KW - *COACHING (Athletics) KW - *SPORTS personnel UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=78550958&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Shiffler, Don AU - Fairchild, Steve AU - Tang, Wilkin AU - Maruyama, Benji AU - Golby, Ken AU - LaCour, Matthew AU - Pasquali, Matteo AU - Lockwood, Nathaniel T1 - Demonstration of an Acid-Spun Single-Walled Nanotube Fiber Cathode. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2012/07/02/Jul2012 Part 2 Y1 - 2012/07/02/Jul2012 Part 2 VL - 40 IS - 7 M3 - Article SP - 1871 EP - 1877 SN - 00933813 AB - Field emission dc cold cathodes continue as an important area of research for uses such as electron microscopy, novel X-ray sources, vacuum electronic devices, terahertz sources, and high-power microwave tubes. Each of these applications typically requires high current densities with high-brightness electron beams driven by cathodes exhibiting long lifetime in the presence of deleterious conditions such as ion back bombardment and excessive heating. The Air Force Research Laboratory (AFRL) now investigates cathodes operating in dc mode for use in a terahertz traveling wave tube (TWT). The TWT requires an electron beam of 50 \mu\m in diameter or less, at 10s of kiloelectronvolt energy with energy spreads of less than 10 eV. While AFRL has tested numerous cathodes in this regime, this paper reports on the first demonstration of a dc cathode utilizing a highly aligned carbon nanotube (CNT) rope for the electron emitter. The rope consists of individual single-walled CNTs that have been subjected to a nitrogen-enhanced acid etch and then spun into a rope configuration. Thus, the single rope emitter has an overall diameter of 100 \mu \m and a length of 1.5 mm. We report on preliminary results from this cathode, in particular the fabrication of the cathode, the dc cathode test system, and the cathode operation up to a voltage of 5 kV. The cathode operates stably to within 0.6% with a 5-mm anode–cathode gap at 5 keV and 1.0-mA current for hundreds of hours. Finally, we provide estimates of the cathode parameters such as the effective field enhancement factor (\betaeff) and emitting area (A) through a Fowler–Nordheim plot and comparison of the experimental data with simulations utilizing the particle-in-cell code Improved Concurrent Electromagnetic Particle-in-Cell. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SINGLE walled carbon nanotubes KW - DIRECT currents KW - CATHODES -- Performance KW - TRAVELING-wave tubes KW - TERAHERTZ technology N1 - Accession Number: 77681639; Source Information: Jul2012 Part 2, Vol. 40 Issue 7, p1871; Subject Term: SINGLE walled carbon nanotubes; Subject Term: DIRECT currents; Subject Term: CATHODES -- Performance; Subject Term: TRAVELING-wave tubes; Subject Term: TERAHERTZ technology; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TPS.2012.2195328 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=77681639&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Byard, Kyle AU - Malisow, Ben AU - France, E. B. T1 - Toward a Superior Promotion System. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2012/07//Jul/Aug2012 Y1 - 2012/07//Jul/Aug2012 VL - 26 IS - 4 M3 - Article SP - 24 EP - 44 PB - Superintendent of Documents SN - 1555385X AB - The article examines the cycle of promotion procedures for the U.S. Air Force officers. It proposes an evaluation/promotion process for the officers marked by predictability, stability, and transparency. It reviews the history and purpose of the system, and explores some latter's inherent challenges. It offers suggestions to enhance the promotions process such as numerical grading by the direct supervisor and rating period of training and education on the same criteria. KW - PROMOTIONS KW - UNITED States. Air Force -- Officials & employees KW - EMPLOYEES -- Rating of KW - EDUCATIONAL background KW - TRANSPARENCY (Optics) N1 - Accession Number: 87572324; Source Information: Jul/Aug2012, Vol. 26 Issue 4, p24; Subject Term: PROMOTIONS; Subject Term: UNITED States. Air Force -- Officials & employees; Subject Term: EMPLOYEES -- Rating of; Subject Term: EDUCATIONAL background; Subject Term: TRANSPARENCY (Optics); Subject Term: ; Number of Pages: 21p; ; Illustrations: 1 Color Photograph, 1 Chart; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=87572324&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Willi, Bernie T1 - The Importance of Airpower in Supporting Irregular Warfare in Afghanistan. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2012/07//Jul/Aug2012 Y1 - 2012/07//Jul/Aug2012 VL - 26 IS - 4 M3 - Opinion SP - 103 EP - 117 PB - Superintendent of Documents SN - 1555385X AB - The author discusses the importance of airpower in supporting irregular warfare (IW) in Afghanistan. He notes that the use of airpower demonstrates government responsiveness and commitment that Afghans will not forget. It examines the geographical nature of Afghanistan and its effect on aviation operations and the ways in which the Afghan Air Force (AAF) has furthered national objectives by conducting irregular warfare (IW) operations. KW - AIR power (Military science) KW - IRREGULAR warfare KW - AFGHANISTAN. Air Force KW - NATIONAL security KW - ARMED Forces N1 - Accession Number: 87572327; Source Information: Jul/Aug2012, Vol. 26 Issue 4, p103; Subject Term: AIR power (Military science); Subject Term: IRREGULAR warfare; Subject Term: AFGHANISTAN. Air Force; Subject Term: NATIONAL security; Subject Term: ARMED Forces; Subject Term: ; Number of Pages: 15p; ; Illustrations: 5 Color Photographs, 1 Graph; ; Document Type: Opinion; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=87572327&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Titus, James T1 - Shooting the Front: Allied Aerial Reconnaissance and Photographic Interpretation on the Western Front-World War I. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2012/07//Jul/Aug2012 Y1 - 2012/07//Jul/Aug2012 VL - 26 IS - 4 M3 - Book Review SP - 181 EP - 183 PB - Superintendent of Documents SN - 1555385X AB - The article reviews the book "Shooting the Front: Allied Aerial Reconnaissance and Photographic Interpretation on the Western Front: World War I" by Terrence J. Finnegan. KW - SHOOTING the Front: Allied Aerial Reconnaissance & Photographic Interpretation on the Western Front: World War I (Book) KW - FINNEGAN, Terrence J. KW - AERIAL reconnaissance (Military) KW - WORLD War, 1914-1918 KW - NONFICTION N1 - Accession Number: 87572341; Source Information: Jul/Aug2012, Vol. 26 Issue 4, p181; Subject Term: SHOOTING the Front: Allied Aerial Reconnaissance & Photographic Interpretation on the Western Front: World War I (Book); Subject Term: FINNEGAN, Terrence J.; Subject Term: AERIAL reconnaissance (Military); Subject Term: WORLD War, 1914-1918; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=87572341&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ombrello, Timothy AU - Carter, Campbell AU - Katta, Viswanath T1 - Burner platform for sub-atmospheric pressure flame studies JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/07// VL - 159 IS - 7 M3 - Article SP - 2363 EP - 2373 SN - 00102180 AB - Abstract: Hencken burner flames at sub-atmospheric pressure were characterized experimentally to show their unique structure for detailed flame studies. Methane–air flames at 16.7kPa were shown to be lifted and stably anchored at significant distances (up to 18mm) above the burner surface, while maintaining a flat and one-dimensional laminar structure and near adiabatic conditions. Particle image velocimetry was used to identify the weakly stretched regime (strain rate=20–70s−1) of the flames, as well as the flame speeds, while OH number densities were measured through laser-induced fluorescence and calibrated through absorption. The flame speeds and quantitative OH profiles were compared to one-dimensional and two-dimensional flame simulations using the chemical kinetic mechanisms of USC Mech II and GRI-3.0 and showed good agreement. Flames produced by a Hencken burner at sub-atmospheric pressure were shown to accurately represent a steady, laminar, nearly one-dimensional, minimally curved, weakly stretched, and near adiabatic flame, which could be compared to one-dimensional freely-propagating flame simulations with minimal corrections and extrapolations. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Atmospheric pressure KW - Methane KW - Simulation methods & models KW - Flame KW - Quantitative research KW - Hydroxyl group KW - Chemical kinetics KW - Reaction mechanisms (Chemistry) KW - Flame speed KW - Hencken burner KW - Laminar flames KW - OH PLIF KW - Sub-atmospheric pressure KW - Weakly stretched N1 - Accession Number: 74991788; Ombrello, Timothy 1; Email Address: timothy.ombrello@wpafb.af.mil; Carter, Campbell 1; Email Address: campbell.carter@wpafb.af.mil; Katta, Viswanath 2; Email Address: vrkatta@gmail.com; Affiliations: 1: Air Force Research Laboratory, Propulsion Directorate, 1950 Fifth Street, Wright-Patterson AFB, OH 45433, United States; 2: Innovative Scientific Solutions Incorporated, 2766 Indian Ripple Road, Dayton, OH 45440, United States; Issue Info: Jul2012, Vol. 159 Issue 7, p2363; Thesaurus Term: Atmospheric pressure; Thesaurus Term: Methane; Thesaurus Term: Simulation methods & models; Subject Term: Flame; Subject Term: Quantitative research; Subject Term: Hydroxyl group; Subject Term: Chemical kinetics; Subject Term: Reaction mechanisms (Chemistry); Author-Supplied Keyword: Flame speed; Author-Supplied Keyword: Hencken burner; Author-Supplied Keyword: Laminar flames; Author-Supplied Keyword: OH PLIF; Author-Supplied Keyword: Sub-atmospheric pressure; Author-Supplied Keyword: Weakly stretched; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.combustflame.2012.03.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=74991788&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Jiang, Hai AU - Patterson, Mark AU - Brown, Dustin AU - Zhang, Chenhao AU - Pan, KuanChang AU - Subramanyam, Guru AU - Kuhl, David AU - Leedy, Kevin AU - Cerny, Charles T1 - Miniaturized and Reconfigurable CPW Square-Ring Slot Antenna Loaded With Ferroelectric BST Thin Film Varactors. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2012/07// Y1 - 2012/07// VL - 60 IS - 7 M3 - Article SP - 3111 EP - 3119 SN - 0018926X AB - A novel miniaturized and reconfigurable coplanar waveguide (CPW) square-ring slot antenna is presented in this paper. The miniaturization is achieved via a hybrid approach including ferroelectric varactor loadings, high dielectric constant materials, and tuning stub for impedance matching. For the first time, nine shunt ferroelectric (FE) BST (Ba(1-x)\rm Srx\rm TiO3) thin film varactors are integrated with the CPW antenna structure achieving both antenna miniaturization and reconfiguration at the same time. The size of the miniaturized antenna is reduced to 0.067\lambda0\times 0.067\lambda0 without ground, and 0.1\lambda0\times 0.1\lambda0 with ground. The resonant frequency of the miniaturized antenna can be reconfigured from 5.3 GHz to 5.8 GHz by applying a DC voltage. Measured E-plane and H-plane co-polarized patterns are presented. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SLOT antennas KW - FERROELECTRIC thin films KW - VARACTORS KW - MINIATURE electronic equipment KW - WAVEGUIDES KW - MIMO systems KW - EQUATIONS N1 - Accession Number: 77681469; Source Information: Jul2012, Vol. 60 Issue 7, p3111; Subject Term: SLOT antennas; Subject Term: FERROELECTRIC thin films; Subject Term: VARACTORS; Subject Term: MINIATURE electronic equipment; Subject Term: WAVEGUIDES; Subject Term: MIMO systems; Subject Term: EQUATIONS; Subject Term: ; Number of Pages: 9p; ; Document Type: Article; L3 - 10.1109/TAP.2012.2196918 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=77681469&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 104473348 T1 - Characteristics of Decredentialed Agents in a Military Law Enforcement Agency. AU - Koepfler, James AU - Brewster, JoAnne AU - Englert, David Y1 - 2012/07// N1 - Accession Number: 104473348. Language: English. Entry Date: 20120724. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services; Psychiatry/Psychology. Instrumentation: Minnesota Multiphasic Personality Inventory-2 (MMPI-2). NLM UID: 8915802. KW - Police KW - Military Personnel KW - Professional Misconduct KW - Credentialing KW - Professional Discipline KW - Human KW - Personality KW - Record Review KW - Male KW - Female KW - Adult KW - Middle Age KW - Descriptive Statistics KW - MMPI KW - Personality Tests SP - 347 EP - 362 JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) JA - MILIT PSYCHOL VL - 24 IS - 4 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - We used archival data from 99 decredentialed agents, 52 non-decredentialed agents, and 46 agents who earned awards to examine whether information obtained at the time of selection would be useful in predicting problematic behaviors of federal law enforcement military personnel. We found that agents were decredentialed most commonly for inappropriate sexual behavior and behavior for personal gain; decredentialing tended to occur early in the agent's career. In about a quarter of decredentialing cases, agents were deployed or were on temporary duty outside the country. We discuss implications of our findings for selecting, training, and supervising law enforcement agents within military organizations. SN - 0899-5605 AD - Department of Graduate Psychology, James Madison University, Harrisonburg, Virginia, USA AD - Malcolm Grow Medical Center, Andrews Air Force Base, United States Air Force, Maryland, USA DO - 10.1080/08995605.2012.695253 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104473348&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Neill, Misti N. AU - Klotz, Anthony C. AU - Buckley, M. Ronald T1 - Reward & Recognition Programs: Analysis of Five Major Oklahoma Employers. JO - Oklahoma Business Bulletin JF - Oklahoma Business Bulletin Y1 - 2012/07// VL - 79 IS - 1 M3 - Article SP - 5 EP - 11 SN - 00301671 AB - The article offers information regarding the reward and recognition programs in the five companies of Oklahoma which include Devon Energy Corp., International Business Machines Corp. and the organization Tinker Air Force Base. The program helps to motivate the employees to facilitate their performance. It states that the effective reward system acts as key ingredients in the growth of any company. KW - OKLAHOMA KW - DEVON Energy Corp. KW - INTERNATIONAL Business Machines Corp. KW - INTEGRIS Health Inc. KW - TINKER Air Force Base (Organization) N1 - Accession Number: 79311306; Neill, Misti N. 1; Klotz, Anthony C.; Buckley, M. Ronald 2,3; Affiliations: 1: Member, United States Air Force, Tinker Air Force Base in Oklahoma; 2: Company Chair of Business Leadership, Price College of Business, University of Oklahoma; 3: Professor of Management and a Professor of Psychology; Issue Info: Jul2012, Vol. 79 Issue 1, p5; Subject: OKLAHOMA ; Company/Entity: DEVON Energy Corp. DUNS Number: 049401565 Ticker: DVN ; Company/Entity: INTERNATIONAL Business Machines Corp. DUNS Number: 001368083 Ticker: IBM ; Company/Entity: INTEGRIS Health Inc. DUNS Number: 121956734 ; Company/Entity: TINKER Air Force Base (Organization); Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=79311306&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - HANDLER, TRISTAN E. AU - MICHAELIS, KYLE J. AU - BRUNO, TODD A. AU - MARTIN, DONALD J. T1 - Improvised Transvenous Cardiac Pacing during Operation Enduring Freedom. JO - Pacing & Clinical Electrophysiology JF - Pacing & Clinical Electrophysiology Y1 - 2012/07// VL - 35 IS - 7 M3 - Article SP - e187 EP - e188 SN - 01478389 AB - We report a case of combat cardiology at a military medical facility in Afghanistan. The patient had a high-degree heart block following inferior ST-elevation myocardial infarction requiring cardiac pacing. Transcutaneous pacing failed, leading to asystolic arrest during critical care air transport. An available transvenous pacing wire was soldered to leads from transcutaneous pacing pads allowing effective in-flight cardiac pacing until definitive therapy was available. This case demonstrates use of available resources under austere conditions, has the potential to inform physicians in similar circumstance, and addresses an area of need at military medical facilities. (PACE 2011;1-2) [ABSTRACT FROM AUTHOR] AB - Copyright of Pacing & Clinical Electrophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARDIAC arrest -- Treatment KW - CARDIAC pacing -- Equipment & supplies KW - CARDIAC pacing -- Methodology KW - EMERGENCY medical services -- Methodology KW - ACLS KW - asystolic arrest KW - emergency air transport KW - transvenous pacing N1 - Accession Number: 77497052; HANDLER, TRISTAN E. 1; MICHAELIS, KYLE J. 2; BRUNO, TODD A. 3; MARTIN, DONALD J. 1; Source Information: Jul2012, Vol. 35 Issue 7, pe187; Subject: CARDIAC arrest -- Treatment; Subject: CARDIAC pacing -- Equipment & supplies; Subject: CARDIAC pacing -- Methodology; Subject: EMERGENCY medical services -- Methodology; Author-Supplied Keyword: ACLS; Author-Supplied Keyword: asystolic arrest; Author-Supplied Keyword: emergency air transport; Author-Supplied Keyword: transvenous pacing; Number of Pages: 2p; Document Type: Article L3 - 10.1111/j.1540-8159.2011.03136.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=77497052&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 104471144 T1 - Improvised Transvenous Cardiac Pacing during Operation Enduring Freedom. AU - Handler, Tristan E. AU - Michaelis, Kyle J. AU - Bruno, Todd A. AU - Martin, Donald J. Y1 - 2012/07// N1 - Accession Number: 104471144. Language: English. Entry Date: 20121129. Revision Date: 20150711. Publication Type: Journal Article; case study. Journal Subset: Allied Health; Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services. NLM UID: 7803944. KW - Cardiac Pacing, Artificial -- Methods KW - Heart Arrest -- Therapy KW - Emergency Care -- Methods KW - Male KW - Middle Age KW - Cardiac Pacing, Artificial -- Equipment and Supplies SP - e187 EP - 8 JO - Pacing & Clinical Electrophysiology JF - Pacing & Clinical Electrophysiology JA - PACING CLIN ELECTROPHYSIOL VL - 35 IS - 7 CY - Malden, Massachusetts PB - Wiley-Blackwell AB - We report a case of combat cardiology at a military medical facility in Afghanistan. The patient had a high-degree heart block following inferior ST-elevation myocardial infarction requiring cardiac pacing. Transcutaneous pacing failed, leading to asystolic arrest during critical care air transport. An available transvenous pacing wire was soldered to leads from transcutaneous pacing pads allowing effective in-flight cardiac pacing until definitive therapy was available. This case demonstrates use of available resources under austere conditions, has the potential to inform physicians in similar circumstance, and addresses an area of need at military medical facilities. (PACE 2011;1-2) SN - 0147-8389 AD - Department of Internal Medicine, RAF Lakenheath, UK AD - Cardiology AD - Nephrology, David Grant Medical Center, Travis AFB; United States Air Force U2 - PMID: 21605143. DO - 10.1111/j.1540-8159.2011.03136.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104471144&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Vallespin, D. AU - Badcock, K.J. AU - Da Ronch, A. AU - White, M.D. AU - Perfect, P. AU - Ghoreyshi, M. T1 - Computational fluid dynamics framework for aerodynamic model assessment JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences J1 - Progress in Aerospace Sciences PY - 2012/07// Y1 - 2012/07// VL - 52 M3 - Article SP - 2 EP - 18 SN - 03760421 AB - Abstract: This paper reviews the work carried out at the University of Liverpool to assess the use of CFD methods for aircraft flight dynamics applications. Three test cases are discussed in the paper, namely, the Standard Dynamic Model, the Ranger 2000 jet trainer and the Stability and Control Unmanned Combat Air Vehicle. For each of these, a tabular aerodynamic model based on CFD predictions is generated along with validation against wind tunnel experiments and flight test measurements. The main purpose of the paper is to assess the validity of the tables of aerodynamic data for the force and moment prediction of realistic aircraft manoeuvres. This is done by generating a manoeuvre based on the tables of aerodynamic data, and then replaying the motion through a time-accurate computational fluid dynamics calculation. The resulting forces and moments from these simulations were compared with predictions from the tables. As the latter are based on a set of steady-state predictions, the comparisons showed perfect agreement for slow manoeuvres. As manoeuvres became more aggressive some disagreement was seen, particularly during periods of large rates of change in attitudes. Finally, the Ranger 2000 model was used on a flight simulator. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTATIONAL fluid dynamics KW - AERODYNAMICS KW - AIRCRAFT fleets KW - FLIGHT testing KW - FORCE & energy KW - FLIGHT simulators N1 - Accession Number: 75181046; Source Information: Jul2012, Vol. 52, p2; Subject Term: COMPUTATIONAL fluid dynamics; Subject Term: AERODYNAMICS; Subject Term: AIRCRAFT fleets; Subject Term: FLIGHT testing; Subject Term: FORCE & energy; Subject Term: FLIGHT simulators; Subject Term: ; Number of Pages: 17p; ; Document Type: Article; L3 - 10.1016/j.paerosci.2011.12.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=75181046&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR T1 - Intramuscular Ketorolac Injections in the Athlete. AU - Sawyer, Gregory A. AU - Anderson, Brett C. AU - Raukar, Neha P. AU - Fadale, Paul D. JO - Sports Health: A Multidisciplinary Approach JF - Sports Health: A Multidisciplinary Approach Y1 - 2012/07//Jul/Aug2012 VL - 4 IS - 4 SP - 319 EP - 327 SN - 19417381 N1 - Accession Number: 77452189; Author: Sawyer, Gregory A.: 1 Author: Anderson, Brett C.: 2 Author: Raukar, Neha P.: 3 Author: Fadale, Paul D.: 4 ; Author Affiliation: 1 Department of Orthopaedic Surgery, The Warren Alpert Medical School of Brown University, Providence, Rhode Island, gregory_sawyer@brown.edu: 2 Department of Orthopaedic Surgery, United States Air Force Academy, Colorado: 3 Department of Emergency Medicine, The Warren Alpert Medical School of Brown University, Providence, Rhode Island: 4 Department of Orthopaedic Surgery, The Warren Alpert Medical School of Brown University, Providence, Rhode Island; No. of Pages: 9; Language: English; Publication Type: Article; Update Code: 20120702 N2 - The article focuses on the use of ketorolac injections by the physicians to control pain in case of injuries sustained by the athletes. It informs that in major cases injuries in athlete affect muscle, tendon, ligaments, periarticular bursa, and bone and to counter the pain the Ketorolac injection is given via an intravenous, intramuscular (IM), oral and ophthalmologic route. ketorolac injections are found to be of great relief but in some cases it had adverse effect on athletes. KW - *KETOROLAC (Drug) KW - *SPORTS injuries -- Treatment KW - *PAIN management KW - *ATHLETES KW - *TENDONS KW - *DRUGS -- Side effects KW - INTRAVENOUS injections KW - INTRAMUSCULAR injections KW - Ketorolac KW - NSAIDs KW - Pain Control KW - Toradol UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=77452189&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 2012-18339-001 AN - 2012-18339-001 AU - Koepfler, James AU - Brewster, JoAnne AU - Englert, David T1 - Characteristics of decredentialed agents in a military law enforcement agency. JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2012/07// VL - 24 IS - 4 SP - 347 EP - 362 CY - United Kingdom PB - Taylor & Francis SN - 0899-5605 SN - 1532-7876 AD - Brewster, JoAnne, Department of Graduate Psychology, James Madison University, MSC 7704, Harrisonburg, VA, US, 22807 N1 - Accession Number: 2012-18339-001. Partial author list: First Author & Affiliation: Koepfler, James; Department of Graduate Psychology, James Madison University, Harrisonburg, VA, US. Other Publishers: Educational Publishing Foundation; Lawrence Erlbaum. Release Date: 20120827. Correction Date: 20160811. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Awards (Merit); Law Enforcement; Laws; Military Personnel; Psychosexual Behavior. Classification: Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Minnesota Multiphasic Personality Inventory-2 DOI: 10.1037/t15120-000; California Psychological Inventory DOI: 10.1037/t05950-000; Inwald Personality Inventory. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 16. Issue Publication Date: Jul, 2012. Copyright Statement: Division 19 (Society for Military Psychology) of the American Psychological Association AB - We used archival data from 99 decredentialed agents, 52 non-decredentialed agents, and 46 agents who earned awards to examine whether information obtained at the time of selection would be useful in predicting problematic behaviors of federal law enforcement military personnel. We found that agents were decredentialed most commonly for inappropriate sexual behavior and behavior for personal gain; decredentialing tended to occur early in the agent’s career. In about a quarter of decredentialing cases, agents were deployed or were on temporary duty outside the country. We discuss implications of our findings for selecting, training, and supervising law enforcement agents within military organizations. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - decredentialed agent characteristics KW - military law enforcement agencies KW - awards KW - military personnel KW - sexual behavior KW - 2012 KW - Awards (Merit) KW - Law Enforcement KW - Laws KW - Military Personnel KW - Psychosexual Behavior KW - 2012 DO - 10.1080/08995605.2012.695253 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-18339-001&site=ehost-live&scope=site UR - brewstja@jmu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-07888-001 AN - 2012-07888-001 AU - Billock, Vincent A. AU - Tsou, Brian H. T1 - Elementary visual hallucinations and their relationships to neural pattern-forming mechanisms. JF - Psychological Bulletin JO - Psychological Bulletin JA - Psychol Bull Y1 - 2012/07// VL - 138 IS - 4 SP - 744 EP - 774 CY - US PB - American Psychological Association SN - 0033-2909 SN - 1939-1455 AD - Billock, Vincent A., NRC, Room 210, Building 248, Wright-Patterson Air Force Base, OH, US, 45433 N1 - Accession Number: 2012-07888-001. PMID: 22448914 Partial author list: First Author & Affiliation: Billock, Vincent A.; National Research Council, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Other Publishers: Psychological Review Company; The Macmillan Company; The Review Publishing Company. Release Date: 20120326. Correction Date: 20120625. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Billock, Vincent A. Major Descriptor: Electrical Activity; Neural Pathways; Visual Hallucinations. Minor Descriptor: Aura; Illumination; Migraine Headache; Spatial Perception; Time Perception. Classification: Neuropsychology & Neurology (2520). Population: Human (10). Methodology: Literature Review. References Available: Y. Page Count: 31. Issue Publication Date: Jul, 2012. Publication History: First Posted Date: Mar 26, 2012; Accepted Date: Nov 16, 2011; Revised Date: Oct 12, 2011; First Submitted Date: May 13, 2011. AB - An extraordinary variety of experimental (e.g., flicker, magnetic fields) and clinical (epilepsy, migraine) conditions give rise to a surprisingly common set of elementary hallucinations, including spots, geometric patterns, and jagged lines, some of which also have color, depth, motion, and texture. Many of these simple hallucinations fall into a small number of perceptual geometries—the Klüver forms—that (via a nonlinear mapping from retina to cortex) correspond to even simpler sets of oriented stripes of cortical activity (and their superpositions). Other simple hallucinations (phosphenes and fortification auras) are linked to the Klüver forms and to pattern-forming cortical mechanisms by their spatial and temporal scales. The Klüver cortical activity patterns are examples of self-organized pattern formation that arise from nonlinear dynamic interactions between excitatory and inhibitory cortical neurons; with reasonable modifications, this model accounts for a wide range of hallucinated patterns. The Klüver cortical activity patterns are a subset of autonomous spatiotemporal cortical patterns, some of which have been studied with functional imaging techniques. Understanding the interaction of these intrinsic patterns with stimulus-driven cortical activity is an important problem in neuroscience. In line with this, hallucinatory pattern formation interacts with physical stimuli, and many conditions that induce hallucinations show interesting interactions with one another. Both types of interactions are predictable from neural and psychophysical principles such as localized processing, excitatory–inhibitory neural circuits, lateral inhibition, simultaneous and sequential contrast, saccadic suppression, and perceptual opponency. Elementary hallucinations arise from familiar mechanisms stimulated in unusual ways. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Klüver form constant KW - intrinsic neural activity KW - migraine fortification aura KW - phosphene KW - spatiotemporal pattern formation KW - visual hallucinations KW - neural pattern-forming mechanisms KW - 2012 KW - Electrical Activity KW - Neural Pathways KW - Visual Hallucinations KW - Aura KW - Illumination KW - Migraine Headache KW - Spatial Perception KW - Time Perception KW - 2012 U1 - Sponsor: National Research Council/Air Force Office of Scientific Research. Other Details: Senior Research Award. Recipients: Billock, Vincent A. DO - 10.1037/a0027580 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-07888-001&site=ehost-live&scope=site UR - vincent.billock.ctr@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-16976-007 AN - 2012-16976-007 AU - Ericson, Justin M. AU - Christensen, James C. T1 - Reallocating attention during multiple object tracking. JF - Attention, Perception, & Psychophysics JO - Attention, Perception, & Psychophysics JA - Atten Percept Psychophys Y1 - 2012/07// VL - 74 IS - 5 SP - 831 EP - 840 CY - Germany PB - Springer SN - 1943-3921 SN - 1943-393X AD - Ericson, Justin M., Air Force Research Laboratory, Wright-Patterson Air Force Base, 2255 H Street B248, Dayton, OH, US, 45433 N1 - Accession Number: 2012-16976-007. PMID: 22477020 Other Journal Title: Perception & Psychophysics. Partial author list: First Author & Affiliation: Ericson, Justin M.; Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, US. Other Publishers: Psychonomic Society. Release Date: 20120806. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Ericson, Justin M. Major Descriptor: Attention; Motion Perception; Object Recognition; Response Duration; Visual Tracking. Classification: Human Experimental Psychology (2300). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study; Experimental Replication; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Jul, 2012. Publication History: First Posted Date: Apr 3, 2012. Copyright Statement: Springer Science+Business Media, LLC (outside the USA). 2012. AB - Wolfe, Place, and Horowitz (Psychonomic Bulletin & Review 14:344–349, 2007) found that participants were relatively unaffected by selecting and deselecting targets while performing a multiple object tracking task, such that maintaining tracking was possible for longer durations than the few seconds typically studied. Though this result was generally consistent with other findings on tracking duration (Franconeri, Jonathon, & Scimeca Psychological Science 21:920–925, 2010), it was inconsistent with research involving cuing paradigms, specifically precues (Pylyshyn & Annan Spatial Vision 19:485–504, 2006). In the present research, we broke down the addition and removal of targets into separate conditions and incorporated a simple performance model to evaluate the costs associated with the selection and deselection of moving targets. Across three experiments, we demonstrated evidence against a cost being associated with any shift in attention, but rather that varying the type of cue used for target deselection produces no additional cost to performance and that hysteresis effects are not induced by a reduction in tracking load. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - reallocating attention KW - multiple object tracking KW - tracking duration KW - moving targets KW - 2012 KW - Attention KW - Motion Perception KW - Object Recognition KW - Response Duration KW - Visual Tracking KW - 2012 U1 - Sponsor: Air Force Research Laboratory, US. Recipients: No recipient indicated U1 - Sponsor: Consortium Research Fellows Program. Recipients: Ericson, Justin M. DO - 10.3758/s13414-012-0294-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-16976-007&site=ehost-live&scope=site UR - ORCID: 0000-0003-4539-5467 UR - UR - james.christensen@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Fiquett, Col Chase T1 - Education and Training- A Look Ahead. JO - Air Force Comptroller JF - Air Force Comptroller J1 - Air Force Comptroller PY - 2012///Summer2012 Y1 - 2012///Summer2012 VL - 45 IS - 2 M3 - Article SP - 2 EP - 5 PB - United States Department of Defense SN - 00022365 AB - A personal narrative is presented which explores the author's experience of being the Major Command (MAJCOM) Comptroller for Air Education and Training Command of the U.S. Air Force. KW - FIRST person narrative KW - GOVERNMENT comptrollers KW - UNITED States. Air Force N1 - Accession Number: 82306095; Source Information: Summer2012, Vol. 45 Issue 2, p2; Subject Term: FIRST person narrative; Subject Term: GOVERNMENT comptrollers; Subject Term: UNITED States. Air Force; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=82306095&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Smith, Jack W.1,2,3,4 T1 - THE ANCHORAGE, ALASKA VETERANS COURT AND RECIDIVISM: JULY 6, 2004 -- DECEMBER 31, 2010. JO - Alaska Law Review JF - Alaska Law Review J1 - Alaska Law Review PY - 2012/06// Y1 - 2012/06// VL - 29 IS - 1 CP - 1 M3 - Article SP - 93 EP - 111 SN - 08830568 AB - In July 2004 Anchorage, Alaska started one of the first veterans courts in the United States. That court has now been in continuous operation for over seven years. This Comment briefly describes the steps taken to establish the Alaska Veterans Court and how the court operates. An overview of the characteristics of participants in and graduates from the court is provided, followed by statistics concerning the effect of the court on recidivism. Several potential future areas of study concerning this court are also identified. The Comment concludes by highlighting the importance of the court and by noting that the benefits provided by the court are currently limited by the absence of funding from any source. [ABSTRACT FROM AUTHOR] KW - Recidivism KW - State courts KW - Administrative law KW - Finance N1 - Accession Number: 78113665; Authors:Smith, Jack W. 1,2,3,4; Affiliations: 1: United States Air Force Academy; 2: University of Southern California; 3: University of Idaho; 4: Master of Judicial Studies, University of Nevada, Reno; Subject: Recidivism; Subject: State courts; Subject: Administrative law; Subject: Finance; Subject: Anchorage (Alaska); Subject: Alaska; Subject: United States; Number of Pages: 19p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=78113665&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - NEWS AU - Dabrowski, Richard1 T1 - Hispania Guest Editorial: Parallel Lines Should Cross. JO - Hispania JF - Hispania J1 - Hispania PY - 2012/06// Y1 - 2012/06// VL - 95 IS - 2 CP - 2 M3 - Editorial SP - 1 EP - 1 SN - 00182133 AB - The author reflects on the physical and cultural barriers at government-sponsored institutions in the U.S. where foreign languages are taught. He mentions that the barriers prevent interaction between agency educators and military and their civilian counterparts in academia. He states that the barriers set a pedagogical world apart that isolated effectively the different government-sponsored bureaucracies involved with language education, which makes cooperation among them difficult. KW - Language & languages -- Study & teaching -- United States KW - Educators -- United States KW - Education & state -- United States N1 - Accession Number: 77419068; Authors:Dabrowski, Richard 1; Affiliations: 1: Spanish/Portuguese Division Chief, United States Air Force Academy; Subject: Language & languages -- Study & teaching -- United States; Subject: Educators -- United States; Subject: Education & state -- United States; Subject: United States; Number of Pages: 1p; Record Type: Editorial L3 - 10.1353/hpn.2012.0049 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=77419068&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR AU - Aihara, Kunia AU - Chen, Morgan Jikang AU - Chen, Cheng AU - Pham, Anh-Vu H. T1 - Reliability of Liquid Crystal Polymer Air Cavity Packaging. JO - IEEE Transactions on Components, Packaging & Manufacturing Technology JF - IEEE Transactions on Components, Packaging & Manufacturing Technology Y1 - 2012/06// VL - 2 IS - 2 M3 - Article SP - 224 EP - 230 SN - 21563950 AB - We present the development of liquid crystal polymer (LCP) packages and thermal compression sealing processes. We demonstrate the complete process for prototyping, sealing, and assembling a single-chip LCP package at microwave frequencies. Using the thermal compression technique, we achieve a measured fine leak rate of 3.7\,\times 10^-8~cc\-atm/s of a LCP package cavity. We have conducted a series of environmental tests such as temperature cycling and 85^\circC and 85% humidity. We demonstrated that LCP packages have passed major environmental tests and proved to be a reliable package platform. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Components, Packaging & Manufacturing Technology is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RELIABILITY (Engineering) KW - PROTOTYPES KW - POLYMER liquid crystals KW - SEALING (Technology) KW - MICROWAVES KW - HUMIDITY KW - TEMPERATURE measurements KW - MOISTURE KW - HELIUM KW - Cavities KW - Cavity resonators KW - Helium KW - Humidity KW - liquid crystal polymer KW - Moisture KW - organic KW - packaging KW - Reliability KW - Temperature measurement KW - Testing N1 - Accession Number: 71538508; Aihara, Kunia 1; Chen, Morgan Jikang 2; Chen, Cheng 3; Pham, Anh-Vu H. 3; Affiliations: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; 2: Futurewei Technologies, Research and Development US Subsidiary of Huawei Technologies, Santa Clara, CA, USA; 3: Electrical and Computer Engineering Department, Microwave Microsystems Laboratory, University of California, Davis, CA, USA; Issue Info: Jun2012, Vol. 2 Issue 2, p224; Thesaurus Term: RELIABILITY (Engineering); Thesaurus Term: PROTOTYPES; Subject Term: POLYMER liquid crystals; Subject Term: SEALING (Technology); Subject Term: MICROWAVES; Subject Term: HUMIDITY; Subject Term: TEMPERATURE measurements; Subject Term: MOISTURE; Subject Term: HELIUM; Author-Supplied Keyword: Cavities; Author-Supplied Keyword: Cavity resonators; Author-Supplied Keyword: Helium; Author-Supplied Keyword: Humidity; Author-Supplied Keyword: liquid crystal polymer; Author-Supplied Keyword: Moisture; Author-Supplied Keyword: organic; Author-Supplied Keyword: packaging; Author-Supplied Keyword: Reliability; Author-Supplied Keyword: Temperature measurement; Author-Supplied Keyword: Testing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TCPMT.2011.2178092 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=71538508&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Shiffler, Don AU - Cauffman, Stephen R. AU - Cross, Adrian W. T1 - Guest Editorial The Fourteenth Special Issue on High-Power Microwave Generation. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2012/06//6/1/2012 Part 1 Part 1 Y1 - 2012/06//6/1/2012 Part 1 Part 1 VL - 40 IS - 6 M3 - Article SP - 1493 EP - 1494 SN - 00933813 AB - An introduction is presented in which the editor discusses various reports within the issue on topics including gyrotrons, free-electron lasers, and magnetrons. KW - FREE electron lasers KW - MAGNETRONS KW - GYROTRONS N1 - Accession Number: 76491804; Source Information: 6/1/2012 Part 1 Part 1, Vol. 40 Issue 6, p1493; Subject Term: FREE electron lasers; Subject Term: MAGNETRONS; Subject Term: GYROTRONS; Subject Term: ; Number of Pages: 2p; ; Document Type: Article; L3 - 10.1109/TPS.2012.2197157 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=76491804&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Estep, Nicholas A. AU - Petrosky, James C. AU - McClory, John W. AU - Kim, Y. AU - Terzuoli, Andrew J. T1 - Electromagnetic Interference and Ionizing Radiation Effects on CMOS Devices. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2012/06//6/1/2012 Part 1 Part 1 Y1 - 2012/06//6/1/2012 Part 1 Part 1 VL - 40 IS - 6 M3 - Article SP - 1495 EP - 1501 SN - 00933813 AB - Integrated circuits are inherently complicated and made more by increasing transistor quantity and density. This trend potentially enhances concomitant effects of high-energy ionizing radiation and local or impressed electromagnetic interference (EMI). The reduced margin for signal error may counter any gain in radiation hardness from smaller device dimensions. Isolated EMI and ionizing radiation studies on circuits have been extensively conducted over the past 30 years. However, little focus has been placed on the combined effects. To investigate the effect of combined EMI and ionizing radiation, two complementary metal–oxide–semiconductor inverter technologies (CD4069 and SN74AUC1G04) were analyzed for their static performance in response to both EMI and gamma radiation up to 132 krd(Si). The combined EMI and gamma radiation environment, compared to the isolated effects of each, produced the most severe degradation in inverter performance for both device technologies. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC interference KW - COMPLEMENTARY metal oxide semiconductors KW - IONIZING radiation KW - TRANSISTORS -- Performance KW - ELECTRIC inverters KW - GAMMA rays -- Measurement N1 - Accession Number: 76491803; Source Information: 6/1/2012 Part 1 Part 1, Vol. 40 Issue 6, p1495; Subject Term: ELECTROMAGNETIC interference; Subject Term: COMPLEMENTARY metal oxide semiconductors; Subject Term: IONIZING radiation; Subject Term: TRANSISTORS -- Performance; Subject Term: ELECTRIC inverters; Subject Term: GAMMA rays -- Measurement; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TPS.2012.2193600 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=76491803&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Andreev, Andrey D. AU - Hendricks, Kyle J. T1 - ICEPIC Simulation of a Strapped Nonrelativistic High-Power CW UHF Magnetron With a Solid Cathode Operating in the Space-Charge Limited Regime. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2012/06//6/1/2012 Part 1 Part 1 Y1 - 2012/06//6/1/2012 Part 1 Part 1 VL - 40 IS - 6 M3 - Article SP - 1551 EP - 1562 SN - 00933813 AB - This paper presents the results of particle-in-cell (PIC) simulations of a strapped nonrelativistic ultrahigh-frequency (890–915 MHz) magnetron whose geometrical and operational parameters are close to the parameters of the high-power industrial heating magnetron producing 75–100 kW of continuous-wave microwave power. Simulations of the magnetron operation are performed without artificial RF priming, but rather in natural conditions, when magnetron oscillations start to grow from electromagnetic “noise.” This approach reveals many important details of the “preoscillating” phase of the magnetron operation. It is found, for example, that the start-up time of the magnetron with a solid cathode, operating in the explosive electron emission mode, is determined by the time needed for the electron cloud formed near the cathode to reach the anode, where the fringing dc electric fields of the periodic anode structure begin to perturb the electron cloud and to facilitate the magnetron oscillations to start to grow. The PIC simulations are performed at one magnetic field (0.238 T) and a range of applied voltages, allowing the magnetron to operate in the \pi mode characterized by five magnetron spokes and TE51-like mode of the induced electromagnetic field distribution within the resonant system of the ten-cavity magnetron. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - NONRELATIVISTIC quantum mechanics KW - SHORTWAVE radio KW - CONTINUOUS wave radar KW - INDUSTRIAL heating KW - ELECTROMAGNETISM N1 - Accession Number: 76491788; Source Information: 6/1/2012 Part 1 Part 1, Vol. 40 Issue 6, p1551; Subject Term: MAGNETRONS; Subject Term: NONRELATIVISTIC quantum mechanics; Subject Term: SHORTWAVE radio; Subject Term: CONTINUOUS wave radar; Subject Term: INDUSTRIAL heating; Subject Term: ELECTROMAGNETISM; Subject Term: ; Number of Pages: 12p; ; Document Type: Article; L3 - 10.1109/TPS.2011.2177997 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=76491788&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Fleming, Timothy P. AU - Lambrecht, Michael AU - Mardahl, Peter T1 - Design and Simulation of a Mega-Watt Class Nonrelativistic Magnetron. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2012/06//6/1/2012 Part 1 Part 1 Y1 - 2012/06//6/1/2012 Part 1 Part 1 VL - 40 IS - 6 M3 - Article SP - 1563 EP - 1568 SN - 00933813 AB - Numerical simulations of a prototype conventional magnetron capable of an RF output power exceeding 1.0 MW are presented. Magnetron design evaluation is carried out via numerical simulation using the 3-D Improved Concurrent Electromagnetic Particle-in-Cell code. The magnetron was capable of oscillating in the \pi mode with little mode competition at 655 MHz over a range of magnetic fields extending from B = 0.186 to B = 0.261 \ \T and voltages ranging from 40 to 64 kV. RF Output power ranged from 400 kW to 2.1 MW over these voltages with efficiencies typically at 60%. RF power propagation upstream was identified as a major source of loss in the design. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONRELATIVISTIC quantum mechanics KW - MAGNETRONS KW - ELECTROMAGNETISM KW - CONCURRENT engineering KW - COMPUTER simulation KW - MAGNETIC fields N1 - Accession Number: 76491790; Source Information: 6/1/2012 Part 1 Part 1, Vol. 40 Issue 6, p1563; Subject Term: NONRELATIVISTIC quantum mechanics; Subject Term: MAGNETRONS; Subject Term: ELECTROMAGNETISM; Subject Term: CONCURRENT engineering; Subject Term: COMPUTER simulation; Subject Term: MAGNETIC fields; Subject Term: ; Number of Pages: 6p; ; Document Type: Article; L3 - 10.1109/TPS.2012.2187288 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=76491790&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Carry, B. AU - Kaasalainen, M. AU - Merline, W.J. AU - Müller, T.G. AU - Jorda, L. AU - Drummond, J.D. AU - Berthier, J. AU - O'Rourke, L. AU - Ďurech, J. AU - Küppers, M. AU - Conrad, A. AU - Tamblyn, P. AU - Dumas, C. AU - Sierks, H. T1 - Shape modeling technique KOALA validated by ESA Rosetta at (21) Lutetia JO - Planetary & Space Science JF - Planetary & Space Science Y1 - 2012/06// VL - 66 IS - 1 M3 - Article SP - 200 EP - 212 SN - 00320633 AB - Abstract: We present here a comparison of our results from ground-based observations of asteroid (21) Lutetia with imaging data acquired during the flyby of the asteroid by the ESA Rosetta mission. This flyby provided a unique opportunity to evaluate and calibrate our method of determination of size, 3-D shape, and spin of an asteroid from ground-based observations. Knowledge of certain observable physical properties of small bodies (e.g., size, spin, 3-D shape, and density) have far-reaching implications in furthering our understanding of these objects, such as composition, internal structure, and the effects of non-gravitational forces. We review the different observing techniques used to determine the above physical properties of asteroids and present our 3-D shape-modeling technique KOALA – Knitted Occultation, Adaptive-optics, and Lightcurve Analysis – which is based on multi-dataset inversion. We compare the results we obtained with KOALA, prior to the flyby, on asteroid (21) Lutetia with the high-spatial resolution images of the asteroid taken with the OSIRIS camera on-board the ESA Rosetta spacecraft, during its encounter with Lutetia on 2010 July 10. The spin axis determined with KOALA was found to be accurate to within 2°, while the KOALA diameter determinations were within 2% of the Rosetta-derived values. The 3-D shape of the KOALA model is also confirmed by the spectacular visual agreement between both 3-D shape models (KOALA pre- and OSIRIS post-flyby). We found a typical deviation of only 2km at local scales between the profiles from KOALA predictions and OSIRIS images, resulting in a volume uncertainty provided by KOALA better than 10%. Radiometric techniques for the interpretation of thermal infrared data also benefit greatly from the KOALA shape model: the absolute size and geometric albedo can be derived with high accuracy, and thermal properties, for example the thermal inertia, can be determined unambiguously. The corresponding Lutetia analysis leads to a geometric albedo of 0.19±0.01 and a thermal inertia below 40Jm−2 s−0.5 K−1, both in excellent agreement with the Rosetta findings. We consider this to be a validation of the KOALA method. Because space exploration will remain limited to only a few objects, KOALA stands as a powerful technique to study a much larger set of small bodies using Earth-based observations. [Copyright &y& Elsevier] AB - Copyright of Planetary & Space Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Asteroids KW - Astronomical observations KW - Imaging systems in astronomy KW - Light curves KW - (21) Lutetia KW - Asteroid KW - Disk-resolved imaging KW - KOALA KW - Rosetta KW - Rosetta (Spacecraft) KW - European Space Agency N1 - Accession Number: 75170026; Carry, B. 1; Email Address: benoit.carry@esa.int; Kaasalainen, M. 2; Merline, W.J. 3; Müller, T.G. 4; Jorda, L. 5; Drummond, J.D. 6; Berthier, J. 7; O'Rourke, L. 1; Ďurech, J. 8; Küppers, M. 1; Conrad, A. 9; Tamblyn, P. 3; Dumas, C. 10; Sierks, H. 11; Affiliations: 1: European Space Astronomy Centre, ESA, P.O. Box 78, 28691 Villanueva de la Cañada Madrid, Spain; 2: Tampere University of Technology, P.O. Box 553, 33101 Tampere, Finland; 3: Southwest Research Institute, 1050 Walnut St. #300, Boulder, CO 80302, USA; 4: Max-Planck-Institut für extraterrestrische Physik (MPE), Giessenbachstrasse, 85748 Garching, Germany; 5: Laboratoire d'Astrophysique de Marseille, Université de Provence, Marseille, France; 6: Starfire Optical Range, Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117-577, USA; 7: Institut de Mécanique Céleste et de Calcul des Éphémérides, Observatoire de Paris, UMR8028 CNRS, 77 av. Denfert-Rochereau 75014 Paris, France; 8: Astronomical Institute, Faculty of Mathematics and Physics, Charles University in Prague, V Holešovičkách 2, 18000 Prague, Czech Republic; 9: Max Planck Institute für Astronomy (MPA), Königstuhl 17, 69117 Heidelberg, Germany; 10: European Southern Observatory, Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile; 11: Max-Planck-Institut für Sonnensystemforschung (MPS), Max-Planck-Strasse 2, 37191 Katlenburg-Lindau, Germany; Issue Info: Jun2012, Vol. 66 Issue 1, p200; Subject Term: Asteroids; Subject Term: Astronomical observations; Subject Term: Imaging systems in astronomy; Subject Term: Light curves; Author-Supplied Keyword: (21) Lutetia; Author-Supplied Keyword: Asteroid; Author-Supplied Keyword: Disk-resolved imaging; Author-Supplied Keyword: KOALA; Author-Supplied Keyword: Rosetta ; Company/Entity: Rosetta (Spacecraft) ; Company/Entity: European Space Agency; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.pss.2011.12.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=75170026&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR T1 - Meniscus Repair: The Role of Accelerated Rehabilitation in Return to Sport. AU - Kozlowski, Erick J. AU - Barcia, Anthony M. AU - Tokish, John M. JO - Sports Medicine & Arthroscopy Review JF - Sports Medicine & Arthroscopy Review Y1 - 2012/06// VL - 20 IS - 2 SP - 121 EP - 125 SN - 10628592 N1 - Accession Number: 76121738; Author: Kozlowski, Erick J.: 1 Author: Barcia, Anthony M.: 2 Author: Tokish, John M.: 2 ; Author Affiliation: 1 United States Air Force Academy, Colorado Springs, CO.: 2 Department of Orthopedic Surgery, Tripler Army Medical Center. Honolulu, HI.; No. of Pages: 5; Language: English; Publication Type: Article; Update Code: 20120528 N2 - A review of the article "Meniscus Repair: The Role of Accelerated Rehabilitation in Return to Sport," by Erick J. Kozlowski, and Anthony M. Barcia, which appeared in the periodical "Sports Medicine and Arthroscopy Review" on June, 2012 is presented. KW - *MENISCUS (Anatomy) KW - *SPORTS medicine KW - *ARTHROSCOPY KW - TRANSPLANTATION KW - meniscal repair KW - meniscus KW - rehabilitation UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=76121738&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 108186384 T1 - Meniscus repair: the role of accelerated rehabilitation in return to sport. AU - Kozlowski EJ AU - Barcia AM AU - Tokish JM Y1 - 2012/06// N1 - Accession Number: 108186384. Language: English. Entry Date: 20121012. Revision Date: 20150712. Publication Type: Journal Article. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Sports Medicine. NLM UID: 9315689. KW - Athletic Injuries -- Rehabilitation KW - Athletic Injuries -- Surgery KW - Therapeutic Exercise -- Methods KW - Menisci, Tibial -- Injuries KW - Menisci, Tibial -- Surgery KW - Recovery KW - Immobilization KW - Weight-Bearing SP - 121 EP - 126 JO - Sports Medicine & Arthroscopy Review JF - Sports Medicine & Arthroscopy Review JA - SPORTS MED ARTHROSC REV VL - 20 IS - 2 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 1062-8592 AD - United States Air Force Academy, Colorado Springs, CO tDepartment of Orthopedic Surgery, Tripler Army Medical Center, Honolulu, HI. U2 - PMID: 22555210. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=108186384&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2012-06642-001 AN - 2012-06642-001 AU - Fellner, Angela N. AU - Matthews, Gerald AU - Shockley, Kevin D. AU - Warm, Joel S. AU - Zeidner, Moshe AU - Karlov, Lisa AU - Roberts, Richard D. T1 - Using emotional cues in a discrimination learning task: Effects of trait emotional intelligence and affective state. JF - Journal of Research in Personality JO - Journal of Research in Personality JA - J Res Pers Y1 - 2012/06// VL - 46 IS - 3 SP - 239 EP - 247 CY - Netherlands PB - Elsevier Science SN - 0092-6566 AD - Matthews, Gerald, Department of Psychology, University of Cincinnati, Cincinnati, OH, US, 45221-0376 N1 - Accession Number: 2012-06642-001. Partial author list: First Author & Affiliation: Fellner, Angela N.; Department of Psychology, University of Cincinnati, Cincinnati, OH, US. Release Date: 20120319. Correction Date: 20140317. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Ability; Discrimination Learning; Emotional Intelligence; Personality Traits. Minor Descriptor: Affection; Cues; Emotions; Learning. Classification: Personality Traits & Processes (3120). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: Letter Series Test; Esoteric Analogies Test; Dundee Stress State Questionnaire DOI: 10.1037/t27031-000; Trait Meta-Mood Scale DOI: 10.1037/t01392-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 9. Issue Publication Date: Jun, 2012. Publication History: First Posted Date: Jan 28, 2012. Copyright Statement: All rights reserved. Elsevier Inc. 2012. AB - Individuals may differ in their ability to learn the significance of emotional cues within a specific context. If so, trait emotional intelligence (EI) may be associated with faster cue learning. This study (N = 180) tested whether trait EI predicts faster learning of a critical cue for discriminating 'terrorists' from 'non-terrorists', using virtual-reality heads as stimuli. The critical cue was either facial emotion (positive or negative), or a neutral feature (hat size). Cognitive ability and subjective state were also assessed. Participants were faster to learn with an emotive cue. Surprisingly, high trait EI was correlated with poorer performance, especially early in learning. Subjective distress was also associated with impaired learning to emotive cues. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - emotional cues KW - learning task KW - emotional intelligence KW - affective state KW - discrimination learning KW - cognitive ability KW - personality traits KW - 2012 KW - Cognitive Ability KW - Discrimination Learning KW - Emotional Intelligence KW - Personality Traits KW - Affection KW - Cues KW - Emotions KW - Learning KW - 2012 DO - 10.1016/j.jrp.2012.01.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-06642-001&site=ehost-live&scope=site UR - gerald.matthews@uc.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-13260-014 AN - 2012-13260-014 AU - Eilam, David AU - Zadicario, Pazit AU - Genossar, Tom AU - Mort, Joel T1 - The anxious vole: The impact of group and gender on collective behavior under life-threat. JF - Behavioral Ecology and Sociobiology JO - Behavioral Ecology and Sociobiology JA - Behav Ecol Sociobiol Y1 - 2012/06// VL - 66 IS - 6 SP - 959 EP - 968 CY - Germany PB - Springer SN - 0340-5443 SN - 1432-0762 AD - Eilam, David, Department of Zoology, Tel-Aviv University, Ramat-Aviv, Israel, 69978 N1 - Accession Number: 2012-13260-014. Partial author list: First Author & Affiliation: Eilam, David; Department of Zoology, Tel-Aviv University, Ramat-Aviv, Israel. Release Date: 20120702. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Animal Defensive Behavior; Collective Behavior; Fear; Threat; Voles. Minor Descriptor: Contagion. Classification: Social & Instinctive Behavior (2440). Population: Animal (20); Male (30); Female (40). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Jun, 2012. Publication History: First Posted Date: Mar 10, 2012; Accepted Date: Feb 29, 2012; Revised Date: Feb 28, 2012; First Submitted Date: Dec 1, 2011. Copyright Statement: Springer-Verlag. 2012. AB - Social animals behave collectively in order to maintain a cohesive group. This collective behavior is often led by a few individuals of specific gender, social rank, or spatial physical location in the group (i.e., perimeter or front). We examined how individual social voles (Microtus socialis) in same-gender compared with mixed-gender groups respond to an owl attack. We found that anxiety level, as measured by the time that each individual spent in less-sheltered sectors (open arms of elevated plus-maze and center of open arena), was affected by both the social context and the gender of the tested individuals. While both female and male voles generally reduced their activity in the open following owl attack, males in mixed-gender groups were exceptional in dichotomizing into those that spent a short period and those that spent a long period in the open arms of the plus-maze. Based on the similar responses of the same-gender groups, we suggest that anxiety is contagious, and based on the lower anxiety level of the mixed-gender groups, we suggest that natural groups that comprise both males and females are better able to cope with life-threat compared with same-gender groups. Finally, we suggest that the differential responses of males in the mixed-gender groups were due to a few males that displayed a low level of anxiety. These males were probably individuals of high social rank, and their response reflects their natural protective role, as previously described in social voles. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - predation risk KW - defensive behavior KW - voles KW - collective behavior KW - contagious fear KW - transmission KW - predator-prey interaction KW - 2012 KW - Animal Defensive Behavior KW - Collective Behavior KW - Fear KW - Threat KW - Voles KW - Contagion KW - 2012 U1 - Sponsor: USAF, US Air Force Material Command, US Air Force Office of Scientific Research, US. Grant: FA8655-11-1-3050. Recipients: No recipient indicated DO - 10.1007/s00265-012-1344-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-13260-014&site=ehost-live&scope=site UR - eilam@post.tau.ac.il DP - EBSCOhost DB - psyh ER - TY - AU - Berger, Matthew1,2 AU - Silva, Claudio T.3 T1 - Medial Kernels. JO - Computer Graphics Forum JF - Computer Graphics Forum J1 - Computer Graphics Forum PY - 2012/05/31/ Y1 - 2012/05/31/ VL - 31 IS - 2pt4 CP - 2pt4 M3 - Article SP - 795 EP - 804 SN - 01677055 AB - We introduce the medial kernel, an association measure which provides for a robust construction of volume-aware distances defined directly on point clouds. The medial kernel is a similarity measure defined as the likelihood of two points belonging to a common interior medial ball. We use the medial kernel to construct a random walk on the point cloud, where movement in the walk is restricted to regions containing similar medial balls. Our distances are defined as the diffusion distances of this random walk, assigning low distance to points belonging to similar medial regions. These distances allow for a robust means of processing incomplete point clouds, capable of distinguishing nearby yet separate undersampled components, while also associating points which are far in Euclidean distance yet mutually share an interior volume. We leverage these distances for several applications: volumetric part segmentation, the construction of function bases, and reconstruction-by-parts - a surface reconstruction method which adheres to the medial kernel. [ABSTRACT FROM AUTHOR] KW - Computer graphics KW - Kernel functions KW - Random walks (Mathematics) KW - Set theory KW - Segmentation (Image processing) KW - Image reconstruction KW - I.3.3 [Computer Graphics]: Picture/Image Generation-Line and curve generation N1 - Accession Number: 76513595; Authors: Berger, Matthew 1,2; Silva, Claudio T. 3; Affiliations: 1: University of Utah; 2: Air Force Research Laboratory, Information Directorate; 3: Polytechnic Institute of New York University; Subject: Kernel functions; Subject: Computer graphics; Subject: Random walks (Mathematics); Subject: Set theory; Subject: Segmentation (Image processing); Subject: Image reconstruction; Author-Supplied Keyword: I.3.3 [Computer Graphics]: Picture/Image Generation-Line and curve generation; Number of Pages: 10p; Illustrations: 13 Color Photographs, 1 Diagram, 1 Graph; Record Type: Article L3 - 10.1111/j.1467-8659.2012.03060.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=asu&AN=76513595&site=ehost-live&scope=site DP - EBSCOhost DB - asu ER - TY - JOUR AU - Kosa, Tamas AU - Sukhomlinova, Ludmila AU - Su, Linli AU - Taheri, Bahman AU - White, Timothy J. AU - Bunning, Timothy J. T1 - Light-induced liquid crystallinity. JO - Nature JF - Nature Y1 - 2012/05/17/ VL - 485 IS - 7398 M3 - Article SP - 347 EP - 349 SN - 00280836 AB - Liquid crystals are traditionally classified as thermotropic, lyotropic or polymeric, based on the stimulus that governs the organization and order of the molecular system. The most widely known and applied class of liquid crystals are a subset of thermotropic liquid crystals known as calamitic, in which adding heat can result in phase transitions from or into the nematic, cholesteric and smectic mesophases. Photoresponsive liquid-crystal materials and mixtures can undergo isothermal phase transitions if light affects the order parameter of the system within a mesophase sufficiently. In nearly all previous examinations, light exposure of photoresponsive liquid-crystal materials and mixtures resulted in order-decreasing photo-induced isothermal phase transitions. Under specialized conditions, an increase in order with light exposure has been reported, despite the tendency of the photoresponsive liquid-crystal system to reduce order in the exposed state. A direct, photo-induced transition from the isotropic to the nematic phase has been observed in a mixture of spiropyran molecules and a nematic liquid crystal. Here we report a class of naphthopyran-based materials that exhibit photo-induced conformational changes in molecular structure capable of yielding order-increasing phase transitions. Appropriate functionalization of the naphthopyran molecules leads to an exceedingly large order parameter in the open form, which results in a clear to strongly absorbing dichroic state. The increase in order with light exposure has profound implications in optics, photonics, lasing and displays and will merit further consideration for applications in solar energy harvesting. The large, photo-induced dichroism exhibited by the material system has been long sought in ophthalmic applications such as photochromic and polarized variable transmission sunglasses. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Liquid crystals KW - Molecular structure KW - Crystal structure KW - Spiropyrans KW - Crystallography N1 - Accession Number: 75275494; Kosa, Tamas 1; Sukhomlinova, Ludmila 2; Su, Linli 2; Taheri, Bahman 2; White, Timothy J. 3; Bunning, Timothy J. 4; Affiliations: 1: 1] Alpha Micron Inc., Kent, Ohio 44240, USA [2]; 2: Alpha Micron Inc., Kent, Ohio 44240, USA; 3: 1] Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Ohio 45433, USA [2]; 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Ohio 45433, USA; Issue Info: 5/17/2012, Vol. 485 Issue 7398, p347; Subject Term: Liquid crystals; Subject Term: Molecular structure; Subject Term: Crystal structure; Subject Term: Spiropyrans; Subject Term: Crystallography; Number of Pages: 3p; Illustrations: 1 Color Photograph, 3 Graphs; Document Type: Article L3 - 10.1038/nature11122 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=75275494&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hermes, Eric D. A. AU - Wells, Timothy S. AU - Smith, Besa AU - Boyko, Edward J. AU - Gackstetter, Gary G. AU - Miller, Shannon C. AU - Smith, Tyler C. T1 - Smokeless tobacco use related to military deployment, cigarettes and mental health symptoms in a large, prospective cohort study among US service members. JO - Addiction JF - Addiction Y1 - 2012/05// VL - 107 IS - 5 M3 - Article SP - 983 EP - 994 SN - 09652140 AB - ABSTRACT Aims To characterize smokeless tobacco initiation and persistence in relation to deployment, combat, occupation, smoking and mental health symptoms. Design Prospective cohort, utilizing self-reported survey data from the Millennium Cohort Study. Setting US military service members in all branches including active duty, reserve and National Guard. Participants Population-based sample of 45 272 participants completing both baseline (July 2001-June 2003; n = 77 047) and follow-up (June 2004-January 2006; n = 55 021) questionnaires (follow-up response rate = 71.4%). Measurements Self-reported smokeless tobacco initiation and persistence. Findings Over the study period, 72.4% did not deploy, 13.7% deployed without combat exposures and 13.9% deployed with combat exposures, while 1.9% were smokeless tobacco initiators and 8.9% were persistent users. The odds of initiation were greater for deployers with combat exposure [odds ratio (OR), 1.76; 95% confidence interval (CI), 1.49-2.09], deployers without combat exposure (OR, 1.31; 95% CI, 1.07-1.60) and those who deployed multiple times (OR, 1.67; 95% CI, 1.31-2.14), as well as in smoking recidivists/initiators (OR, 4.65; 95% CI, 3.82-5.66) and those reporting post-traumatic stress disorder symptoms (OR, 1.54; CI, 1.15-2.07). A similar pattern for higher odds of persistent use was observed for deployment and combat exposure, but not for smoking and mental health symptoms. Military occupation was not significantly associated with initiation or persistence. Conclusions Deployment and combat exposure in the US military are associated with increased risk of smokeless tobacco initiation and persistence while smoking and symptoms of post-traumatic stress disorder increase the odds for initiation. Research is needed on aspects of military service amenable to the reduction or prevention of tobacco consumption. [ABSTRACT FROM AUTHOR] AB - Copyright of Addiction is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MENTAL illness -- Psychological aspects KW - CHI-squared test KW - CONFIDENCE intervals KW - EPIDEMIOLOGY KW - LONGITUDINAL method KW - POST-traumatic stress disorder KW - PSYCHOLOGICAL tests KW - QUESTIONNAIRES KW - RESEARCH -- Finance KW - SCALE analysis (Psychology) KW - SCALES (Weighing instruments) KW - SELF-evaluation KW - SMOKELESS tobacco KW - SMOKING KW - SOCIAL participation KW - MILITARY personnel -- Psychology KW - STATISTICS KW - STRESS (Psychology) KW - WAR KW - DATA analysis KW - MULTIPLE regression analysis KW - MILITARY service KW - DATA analysis -- Software KW - DESCRIPTIVE statistics KW - UNITED States KW - Afghanistan KW - Iraq war KW - military personnel KW - post-traumatic stress disorder KW - risk factors KW - smokeless tobacco KW - tobacco use disorder KW - veterans KW - war N1 - Accession Number: 74020750; Hermes, Eric D. A. 1; Wells, Timothy S. 2; Smith, Besa 2; Boyko, Edward J. 3; Gackstetter, Gary G. 4; Miller, Shannon C. 5,6,7; Smith, Tyler C. 2; Source Information: May2012, Vol. 107 Issue 5, p983; Subject: MENTAL illness -- Psychological aspects; Subject: CHI-squared test; Subject: CONFIDENCE intervals; Subject: EPIDEMIOLOGY; Subject: LONGITUDINAL method; Subject: POST-traumatic stress disorder; Subject: PSYCHOLOGICAL tests; Subject: QUESTIONNAIRES; Subject: RESEARCH -- Finance; Subject: SCALE analysis (Psychology); Subject: SCALES (Weighing instruments); Subject: SELF-evaluation; Subject: SMOKELESS tobacco; Subject: SMOKING; Subject: SOCIAL participation; Subject: MILITARY personnel -- Psychology; Subject: STATISTICS; Subject: STRESS (Psychology); Subject: WAR; Subject: DATA analysis; Subject: MULTIPLE regression analysis; Subject: MILITARY service; Subject: DATA analysis -- Software; Subject: DESCRIPTIVE statistics; Geographic Terms: UNITED States; Author-Supplied Keyword: Afghanistan; Author-Supplied Keyword: Iraq war; Author-Supplied Keyword: military personnel; Author-Supplied Keyword: post-traumatic stress disorder; Author-Supplied Keyword: risk factors; Author-Supplied Keyword: smokeless tobacco; Author-Supplied Keyword: tobacco use disorder; Author-Supplied Keyword: veterans; Author-Supplied Keyword: war; Number of Pages: 12p; Document Type: Article L3 - 10.1111/j.1360-0443.2011.03737.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=74020750&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 104543592 T1 - Smokeless tobacco use related to military deployment, cigarettes and mental health symptoms in a large, prospective cohort study among US service members. AU - Hermes, Eric D. A. AU - Wells, Timothy S. AU - Smith, Besa AU - Boyko, Edward J. AU - Gackstetter, Gary G. AU - Miller, Shannon C. AU - Smith, Tyler C. Y1 - 2012/05// N1 - Accession Number: 104543592. Language: English. Entry Date: 20120411. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Europe; Peer Reviewed; UK & Ireland. Special Interest: Military/Uniformed Services; Psychiatry/Psychology. Instrumentation: PTSD Checklist (PCL); Social Readjustment Rating Scale (SRRS) (Holmes and Rahe); Cut-down, Annoyed, Guilt, Eye-opener (CAGE). Grant Information: The Millennium Cohort Study is funded through the Military Operational Medicine Research Program of the US Army Medical Research and Materiel Command, Fort Detrick, Maryland.. NLM UID: 9304118. KW - Tobacco, Smokeless KW - Smoking -- Epidemiology KW - Military Personnel -- Psychosocial Factors -- United States KW - Mental Disorders -- Psychosocial Factors KW - Stress, Psychological -- Complications KW - Prospective Studies KW - Self Report KW - Questionnaires KW - Odds Ratio KW - Confidence Intervals KW - Stress Disorders, Post-Traumatic -- Symptoms KW - Human KW - Military Deployment KW - Descriptive Statistics KW - Univariate Statistics KW - Multiple Logistic Regression KW - Data Analysis Software KW - Chi Square Test KW - Middle Age KW - Adult KW - Funding Source KW - United States KW - Male KW - Female KW - War KW - Social Readjustment Rating Scale KW - Scales KW - Summated Rating Scaling KW - Checklists SP - 983 EP - 994 JO - Addiction JF - Addiction JA - ADDICTION VL - 107 IS - 5 CY - Malden, Massachusetts PB - Wiley-Blackwell AB - ABSTRACT Aims To characterize smokeless tobacco initiation and persistence in relation to deployment, combat, occupation, smoking and mental health symptoms. Design Prospective cohort, utilizing self-reported survey data from the Millennium Cohort Study. Setting US military service members in all branches including active duty, reserve and National Guard. Participants Population-based sample of 45 272 participants completing both baseline (July 2001-June 2003; n = 77 047) and follow-up (June 2004-January 2006; n = 55 021) questionnaires (follow-up response rate = 71.4%). Measurements Self-reported smokeless tobacco initiation and persistence. Findings Over the study period, 72.4% did not deploy, 13.7% deployed without combat exposures and 13.9% deployed with combat exposures, while 1.9% were smokeless tobacco initiators and 8.9% were persistent users. The odds of initiation were greater for deployers with combat exposure [odds ratio (OR), 1.76; 95% confidence interval (CI), 1.49-2.09], deployers without combat exposure (OR, 1.31; 95% CI, 1.07-1.60) and those who deployed multiple times (OR, 1.67; 95% CI, 1.31-2.14), as well as in smoking recidivists/initiators (OR, 4.65; 95% CI, 3.82-5.66) and those reporting post-traumatic stress disorder symptoms (OR, 1.54; CI, 1.15-2.07). A similar pattern for higher odds of persistent use was observed for deployment and combat exposure, but not for smoking and mental health symptoms. Military occupation was not significantly associated with initiation or persistence. Conclusions Deployment and combat exposure in the US military are associated with increased risk of smokeless tobacco initiation and persistence while smoking and symptoms of post-traumatic stress disorder increase the odds for initiation. Research is needed on aspects of military service amenable to the reduction or prevention of tobacco consumption. SN - 0965-2140 AD - Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA, AD - Department of Deployment Health Research, Naval Health Research Center, San Diego, CA, USA, AD - Epidemiologic Research and Information Center (ERIC), VA Puget Sound, Seattle, WA, USA, AD - Analytic Services Inc., Arlington, VA, USA, AD - Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, USA,; Veterans Affairs Medical Center, Cincinnati, OH, USA; Center for Treatment, Research and Education in Addictive Disorders (CeTREAD), University of Cincinnati Department of Psychiatry and Behavioral Neuroscience, Cincinnati, OH, USA U2 - PMID: 22126651. DO - 10.1111/j.1360-0443.2011.03737.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104543592&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 104539790 T1 - The dynamic nature of the stress appraisal process and the infusion of affect. AU - Eschleman KJ AU - Alarcon GM AU - Lyons JB AU - Stokes CK AU - Schneider T Y1 - 2012/05// N1 - Accession Number: 104539790. Language: English. Entry Date: 20120727. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Biomedical; Europe; Peer Reviewed; UK & Ireland. Special Interest: Psychiatry/Psychology. NLM UID: 9212242. KW - Affect KW - Stress, Psychological -- Diagnosis KW - Adolescence KW - Adult KW - Female KW - Group Processes KW - Male KW - Middle Age KW - Stress, Psychological -- Psychosocial Factors KW - Task Performance and Analysis KW - Young Adult SP - 309 EP - 327 JO - Anxiety, Stress & Coping JF - Anxiety, Stress & Coping JA - ANXIETY STRESS COPING VL - 25 IS - 3 CY - Oxfordshire, PB - Routledge SN - 1061-5806 AD - a Air Force Research Laboratory , 711 HPW/RHXS, BLDG 190, 2698 G Street, Wright-Patterson Air Force Base , Dayton , OH , 45433-7604 , USA. U2 - PMID: 21800952. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104539790&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Reichenstein, William AU - Horan, Stephen M. AU - Jennings, William W. AD - Baylor U AD - CFA Institute, Charlottesville, VA AD - US Air Force Academy, Colorado Springs, CO T1 - Two Key Concepts for Wealth Management and Beyond: Response JO - Financial Analysts Journal JF - Financial Analysts Journal Y1 - 2012/05//May-June 2012 VL - 68 IS - 3 SP - 14 EP - 14 SN - 0015198X N1 - Accession Number: 1416370; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 201402 KW - Household Saving; Personal Finance D14 KW - Personal Income and Other Nonbusiness Taxes and Subsidies; includes inheritance and gift taxes H24 L3 - http://www.cfapubs.org/loi/faj UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1416370&site=ehost-live&scope=site UR - http://www.cfapubs.org/loi/faj DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Siddiqui, Jeffrey J. AU - Phillips, Jamie D. AU - Leedy, Kevin AU - Bayraktaroglu, Burhan T1 - Bias-Temperature-Stress Characteristics of \ZnO/HfO2 Thin-Film Transistors. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices J1 - IEEE Transactions on Electron Devices PY - 2012/05// Y1 - 2012/05// VL - 59 IS - 5 M3 - Article SP - 1488 EP - 1493 SN - 00189383 AB - Positive and negative bias temperature instabilities (PBTI and NBTI) of \ZnO/HfO2 thin-film transistors are investigated by the bias-temperature-stress test method. PBTI results show a linear shift in threshold voltage in the positive voltage direction with a magnitude that semilogarithmically increases with time. This is indicative of dielectric charge trapping. Trends with stress voltage and temperature also support this conclusion. NBTI characteristics include threshold voltage shifts in the negative voltage direction, reduced channel mobility, and an increased subthreshold slope with temperature. The observed behavior suggests that defect state creation at the interface is the dominant mechanism responsible for NBTI. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN film transistors KW - ZINC oxide KW - HAFNIUM oxide KW - STRAINS & stresses (Mechanics) KW - TEMPERATURE measurements KW - THRESHOLD voltage KW - GATE array circuits N1 - Accession Number: 74556261; Source Information: May2012, Vol. 59 Issue 5, p1488; Subject Term: THIN film transistors; Subject Term: ZINC oxide; Subject Term: HAFNIUM oxide; Subject Term: STRAINS & stresses (Mechanics); Subject Term: TEMPERATURE measurements; Subject Term: THRESHOLD voltage; Subject Term: GATE array circuits; Subject Term: ; Number of Pages: 6p; ; Document Type: Article; L3 - 10.1109/TED.2012.2189048 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=74556261&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Wu, Yi AU - Cheng, Jian AU - Wang, Jinqiao AU - Lu, Hanqing AU - Wang, Jun AU - Ling, Haibin AU - Blasch, Erik AU - Bai, Li T1 - Real-Time Probabilistic Covariance Tracking With Efficient Model Update. JO - IEEE Transactions on Image Processing JF - IEEE Transactions on Image Processing Y1 - 2012/05// VL - 21 IS - 5 M3 - Article SP - 2824 EP - 2837 SN - 10577149 AB - The recently proposed covariance region descriptor has been proven robust and versatile for a modest computational cost. The covariance matrix enables efficient fusion of different types of features, where the spatial and statistical properties, as well as their correlation, are characterized. The similarity between two covariance descriptors is measured on Riemannian manifolds. Based on the same metric but with a probabilistic framework, we propose a novel tracking approach on Riemannian manifolds with a novel incremental covariance tensor learning (ICTL). To address the appearance variations, ICTL incrementally learns a low-dimensional covariance tensor representation and efficiently adapts online to appearance changes of the target with only \cal O(1) computational complexity, resulting in a real-time performance. The covariance-based representation and the ICTL are then combined with the particle filter framework to allow better handling of background clutter, as well as the temporary occlusions. We test the proposed probabilistic ICTL tracker on numerous benchmark sequences involving different types of challenges including occlusions and variations in illumination, scale, and pose. The proposed approach demonstrates excellent real-time performance, both qualitatively and quantitatively, in comparison with several previously proposed trackers. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Image Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANALYSIS of covariance KW - PROBABILITY theory KW - ROBUST control KW - DESCRIPTOR systems (Computer science) KW - MATRICES KW - RIEMANNIAN manifolds KW - COMPUTATIONAL complexity KW - Adaptation models KW - Covariance descriptor KW - Covariance matrix KW - Feature extraction KW - incremental learning KW - Manifolds KW - model update KW - particle filter KW - Riemannian manifolds KW - Target tracking KW - Tensile stress KW - visual tracking N1 - Accession Number: 74406218; Wu, Yi 1; Cheng, Jian 2; Wang, Jinqiao 2; Lu, Hanqing 2; Wang, Jun 3; Ling, Haibin 4; Blasch, Erik 5; Bai, Li 6; Affiliations: 1: School of Information and Control Engineering, Nanjing University of Information Science and Technology, Nanjing, China; 2: Institute of Automation, Chinese Academy of Sciences, Beijing, China; 3: Network Center, Nanjing University of Information Science and Technology, Nanjing, China; 4: Department of Computer and Information Science, Temple University, Philadelphia, PA, USA; 5: U.S. Air Force Research Laboratory (AFRL), AFRL/RYAA, WPAFB, OH, USA; 6: Department of Electrical and Computer Engineering, Temple University, Philadelphia, PA, USA; Issue Info: May2012, Vol. 21 Issue 5, p2824; Thesaurus Term: ANALYSIS of covariance; Thesaurus Term: PROBABILITY theory; Subject Term: ROBUST control; Subject Term: DESCRIPTOR systems (Computer science); Subject Term: MATRICES; Subject Term: RIEMANNIAN manifolds; Subject Term: COMPUTATIONAL complexity; Author-Supplied Keyword: Adaptation models; Author-Supplied Keyword: Covariance descriptor; Author-Supplied Keyword: Covariance matrix; Author-Supplied Keyword: Feature extraction; Author-Supplied Keyword: incremental learning; Author-Supplied Keyword: Manifolds; Author-Supplied Keyword: model update; Author-Supplied Keyword: particle filter; Author-Supplied Keyword: Riemannian manifolds; Author-Supplied Keyword: Target tracking; Author-Supplied Keyword: Tensile stress; Author-Supplied Keyword: visual tracking; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TIP.2011.2182521 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=74406218&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Bernhardt, P. A. AU - Ballenthin, J. O. AU - Baumgardner, J. L. AU - Bhatt, A. AU - Boyd, I. D. AU - Burt, J. M. AU - Caton, R. G. AU - Coster, A. AU - Erickson, P. J. AU - Huba, J. D. AU - Earle, G. D. AU - Kaplan, C. R. AU - Foster, J. C. AU - Groves, K. M. AU - Haaser, R. A. AU - Heelis, R. A. AU - Hunton, D. E. AU - Hysell, D. L. AU - Klenzing, J. H. AU - Larsen, M. F. T1 - Ground and Space-Based Measurement of Rocket Engine Burns in the Ionosphere. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2012/05//5/1/2012 Part 1 Part 1 Y1 - 2012/05//5/1/2012 Part 1 Part 1 VL - 40 IS - 5 M3 - Article SP - 1267 EP - 1286 SN - 00933813 AB - On-orbit firings of both liquid and solid rocket motors provide localized disturbances to the plasma in the upper atmosphere. Large amounts of energy are deposited to ionosphere in the form of expanding exhaust vapors which change the composition and flow velocity. Charge exchange between the neutral exhaust molecules and the background ions (mainly \O^+) yields energetic ion beams. The rapidly moving pickup ions excite plasma instabilities and yield optical emissions after dissociative recombination with ambient electrons. Line-of-sight techniques for remote measurements rocket burn effects include direct observation of plume optical emissions with ground and satellite cameras, and plume scatter with UHF and higher frequency radars. Long range detection with HF radars is possible if the burns occur in the dense part of the ionosphere. The exhaust vapors initiate plasma turbulence in the ionosphere that can scatter HF radar waves launched from ground transmitters. Solid rocket motors provide particulates that become charged in the ionosphere and may excite dusty plasma instabilities. Hypersonic exhaust flow impacting the ionospheric plasma launches a low-frequency, electromagnetic pulse that is detectable using satellites with electric field booms. If the exhaust cloud itself passes over a satellite, in situ detectors measure increased ion-acoustic wave turbulence, enhanced neutral and plasma densities, elevated ion temperatures, and magnetic field perturbations. All of these techniques can be used for long range observations of plumes in the ionosphere. To demonstrate such long range measurements, several experiments were conducted by the Naval Research Laboratory including the Charged Aerosol Release Experiment, the Shuttle Ionospheric Modification with Pulsed Localized Exhaust experiments, and the Shuttle Exhaust Ionospheric Turbulence Experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ROCKET engines KW - IONOSPHERE KW - PLASMA (Ionized gases) KW - FLOW velocity KW - ION beams N1 - Accession Number: 75125899; Source Information: 5/1/2012 Part 1 Part 1, Vol. 40 Issue 5, p1267; Subject Term: ROCKET engines; Subject Term: IONOSPHERE; Subject Term: PLASMA (Ionized gases); Subject Term: FLOW velocity; Subject Term: ION beams; Subject Term: ; Number of Pages: 20p; ; Document Type: Article; L3 - 10.1109/TPS.2012.2185814 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=75125899&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Avalos, Javier AU - Swenson, Eric D. AU - Mignolet, Marc P. AU - Lindsley, Ned J. T1 - Stochastic Modeling of Structural Uncertainty/Variability from Ground Vibration Modal Test Data. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2012/05//May/Jun2012 Y1 - 2012/05//May/Jun2012 VL - 49 IS - 3 M3 - Article SP - 870 EP - 884 SN - 00218669 AB - The focus of this investigation is on the formulation and validation of a methodology for the estimation of a stochastic linear modal model of a structure from measurements of a few of its natural frequencies and mode shapes on a few nominally identical samples of the structure. The basis for the modal model is composed of the modes of an approximate representation of the structure, e.g., a nonupdated or preliminary finite element model. Furthermore, the variability or uncertainty in the structure is assumed to originate from stiffness properties (e.g., Young's modulus, boundary conditions, attachment conditions) so that the mass matrix of the uncertain linear modal model is identity but the corresponding stiffness matrix is random. The nonparametric stochastic modeling approach is adopted here for the representation of this latter matrix; thus, the quantities to be estimated are the mean stiffness matrix and the uncertainty level. This effort is accomplished using the maximum likelihood framework using both natural frequencies and mode shapes data. The successful application of this approach to data from the Air Force Institute of Technology joined wing is demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STOCHASTIC processes KW - FINITE element method KW - BOUNDARY value problems KW - AIRPLANE wings KW - ELASTICITY KW - MAXIMUM likelihood statistics N1 - Accession Number: 77843538; Source Information: May/Jun2012, Vol. 49 Issue 3, p870; Subject Term: STOCHASTIC processes; Subject Term: FINITE element method; Subject Term: BOUNDARY value problems; Subject Term: AIRPLANE wings; Subject Term: ELASTICITY; Subject Term: MAXIMUM likelihood statistics; Subject Term: ; Number of Pages: 15p; ; Document Type: Article; L3 - 10.2514/1.C031546 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=77843538&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2012-12222-015 AN - 2012-12222-015 AU - Findley, Jonathan Chase AU - Joshi, Kaustubh G. T1 - A case of repeated brief psychotic episodes secondary to discontinuation of non-prescription estrogen replacement therapy. JF - Psychosomatics: Journal of Consultation and Liaison Psychiatry JO - Psychosomatics: Journal of Consultation and Liaison Psychiatry JA - Psychosomatics Y1 - 2012/05//May-Jun, 2012 VL - 53 IS - 3 SP - 285 EP - 288 CY - Netherlands PB - Elsevier Science SN - 0033-3182 SN - 1545-7206 AD - Findley, Jonathan Chase, Dept. of Psychiatry, University of Texas Health Science Center at San Antonio School of Medicine, 7703 Floyd Curl Drive, Mail code 7792, San Antonio, TX, US, 78229-3900 N1 - Accession Number: 2012-12222-015. PMID: 22305488 Partial author list: First Author & Affiliation: Findley, Jonathan Chase; University of Texas Health Science Center at San Antonio, San Antonio, TX, US. Other Publishers: American Psychiatric Assn. Release Date: 20120702. Correction Date: 20130923. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Estrogens; Hormone Therapy; Psychosis; Treatment Dropouts. Minor Descriptor: Human Females. Classification: Clinical Psychopharmacology (3340). Population: Human (10); Female (40). Age Group: Adulthood (18 yrs & older) (300); Middle Age (40-64 yrs) (360). Methodology: Clinical Case Study. References Available: Y. Page Count: 4. Issue Publication Date: May-Jun, 2012. Publication History: Accepted Date: Aug 15, 2011; Revised Date: Aug 11, 2011; First Submitted Date: Jun 24, 2011. Copyright Statement: Published by Elsevier Inc. All rights reserved. The Academy of Psychosomatic Medicine. 2012. AB - We present the case of a 53-year-old woman who experienced repeated brief psychotic episodes on two occasions in the context of discontinuation of non-prescription estrogen replacement therapy. The estrogen hypothesis of psychosis indicates that estrogen provides a protective effect against the development of psychotic disorders. We believe that our report describes a novel example of a hypoestrogenic state causing psychotic symptoms in a postmenopausal woman and, thus, lends further evidence to the estrogen hypothesis of psychosis. Continued research elucidating the connection between estrogen and mental health symptoms will likely be beneficial for many patients in the future. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - repeated brief psychotic episodes KW - therapy discontinuation KW - non-prescription estrogen replacement therapy KW - psychosis KW - 2012 KW - Estrogens KW - Hormone Therapy KW - Psychosis KW - Treatment Dropouts KW - Human Females KW - 2012 DO - 10.1016/j.psym.2011.08.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-12222-015&site=ehost-live&scope=site UR - findley@uthscsa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-08104-005 AN - 2012-08104-005 AU - Eschleman, Kevin J. AU - Alarcon, Gene M. AU - Lyons, Joseph B. AU - Stokes, Charlene K. AU - Schneider, Tamera T1 - The dynamic nature of the stress appraisal process and the infusion of affect. JF - Anxiety, Stress & Coping: An International Journal JO - Anxiety, Stress & Coping: An International Journal JA - Anxiety Stress Coping Y1 - 2012/05// VL - 25 IS - 3 SP - 309 EP - 327 CY - United Kingdom PB - Taylor & Francis SN - 1061-5806 SN - 1477-2205 AD - Eschleman, Kevin J., Air Force Research Laboratory, Wright-Patterson Air Force Base, 711 HPW/RHXS, BLDG 190, 2698 G Street, Dayton, OH, US, 45433-7604 N1 - Accession Number: 2012-08104-005. PMID: 21800952 Other Journal Title: Anxiety Research. Partial author list: First Author & Affiliation: Eschleman, Kevin J.; Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, US. Release Date: 20120430. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Appraisal; Emotions; Stress. Classification: Personality Traits & Processes (3120). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Stressor Appraisal Scale; Positive and Negative Affect Schedule DOI: 10.1037/t03592-000. Methodology: Empirical Study; Longitudinal Study; Quantitative Study. References Available: Y. Page Count: 19. Issue Publication Date: May, 2012. Publication History: Revised Date: Jun 24, 2011; First Submitted Date: Dec 21, 2010. Copyright Statement: Taylor & Francis. 2011. AB - Very little is known about the process in which people reappraise a stressful environment or the factors that may influence this process. In the current study, we address the several limitations to previous research regarding stress reappraisals and explore the role of affect on this process. A total of 320 participants (mean age = 20 years, 60% male) completed an increasingly demanding team-based coordination task. Mood and stress appraisals were assessed at three time points using self-report surveys during four different waves of data collection. The longitudinal design enabled us to assess primary and secondary reappraisals (change in appraisals during the experiment), task-irrelevant affect (affect assessed prior to experiment participation), and task-relevant affect (change in affect experienced during the experiment). Guided by the Transactional Theory of Stress, we argue that the relationship between primary reappraisal and secondary reappraisal is an accurate representation of a dynamic stress appraisal process. We found that participants were more likely to engage in the stress appraisal process when they experienced less task-irrelevant positive affect and greater task-relevant positive affect. Both task-irrelevant and task-relevant negative affect were not found to influence the stress appraisal process. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - stress appraisals KW - affect KW - reappraisal KW - 2012 KW - Cognitive Appraisal KW - Emotions KW - Stress KW - 2012 DO - 10.1080/10615806.2011.601299 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-08104-005&site=ehost-live&scope=site UR - kevin.eschleman@wright.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Catoire, Laurent AU - Chambreau, Steven D. AU - Vaghjiani, Ghanshyam L. T1 - Chemical kinetics interpretation of hypergolicity of dicyanamide ionic liquid-based systems JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/04// VL - 159 IS - 4 M3 - Article SP - 1759 EP - 1768 SN - 00102180 AB - Abstract: Ionic liquids are candidates for replacing hydrazine and hydrazine derivatives systems. A detailed chemical kinetics model has been built to examine the gas-phase chemistry between isocyanic acid (HNCO), white fuming nitric acid (WFNA), N2O, CO2, and water, especially at low temperatures (ambient to 423K). This kinetics model is able to explain the gas-phase ignition observed during hypergolic ignition of the ionic liquid 1-butyl-3-methyl-imidazolium dicyanamide (BMIM-dca) with WFNA. Sensitivity analyses have been performed to examine the reaction pathways for ignition. Ignition is predicted to occur via an exothermic reaction between isocyanic acid (HNCO) and nitric acid (HONO2), and subsequent HONO2 thermal decomposition that has NO2 and OH radicals as the primary chain carriers. A detailed understanding of the initiation processes in the liquid phase is needed, as the BMIM-dca and WFNA begin to react to produce the above preignition species for the proposed chemical kinetics model to describe the ignition behavior of the system. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Calcium cyanamide KW - Hydrazine KW - Mathematical models KW - Decomposition (Chemistry) KW - Chemical kinetics KW - Ionic liquids KW - Isocyanic acid KW - Chemical reactions KW - Combustion KW - Hypergolicity KW - Ignition N1 - Accession Number: 72341474; Catoire, Laurent 1,2; Email Address: laurent.catoire@ensta-paristech.fr; Chambreau, Steven D. 3; Vaghjiani, Ghanshyam L. 4; Affiliations: 1: ICARE-CNRS and University of Orleans, 1C, Avenue de la Recherche Scientifique, 45071 Orleans, France; 2: ENSTA ParisTech, 32, Boulevard Victor, 75739 Paris Cedex 15, France; 3: ERC Incorporated, 10 E. Saturn Blvd., Edwards AFB, CA 92524, USA; 4: Air Force Research Laboratory, Propellants Branch (AFRL/RZSP), 10 E. Saturn Blvd., Edwards AFB, CA 92524, USA; Issue Info: Apr2012, Vol. 159 Issue 4, p1759; Thesaurus Term: Calcium cyanamide; Thesaurus Term: Hydrazine; Thesaurus Term: Mathematical models; Thesaurus Term: Decomposition (Chemistry); Subject Term: Chemical kinetics; Subject Term: Ionic liquids; Subject Term: Isocyanic acid; Subject Term: Chemical reactions; Author-Supplied Keyword: Combustion; Author-Supplied Keyword: Hypergolicity; Author-Supplied Keyword: Ignition; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.combustflame.2011.12.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=72341474&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 104537258 T1 - Military Mental Health Professionals On Operational Deployment: An Exploratory Study. AU - McCauley, Mathew AU - Liebling-Kalifani, Helen AU - Hughes, Jamie Y1 - 2012/04// N1 - Accession Number: 104537258. Language: English. Entry Date: 20120418. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Continental Europe; Europe; Peer Reviewed. Special Interest: Psychiatry/Psychology. NLM UID: 0005735. KW - Military Services KW - Military Personnel -- Psychosocial Factors KW - Stress, Occupational KW - Mental Health Personnel -- Psychosocial Factors KW - Role Conflict KW - Interpersonal Relations KW - Human KW - Exploratory Research KW - Grounded Theory KW - Qualitative Studies KW - United Kingdom KW - Descriptive Statistics KW - Models, Theoretical SP - 238 EP - 248 JO - Community Mental Health Journal JF - Community Mental Health Journal JA - COMMUNITY MENT HEALTH J VL - 48 IS - 2 CY - , PB - Springer Science & Business Media B.V. AB - This exploratory study aimed to develop greater insight into the occupational and personal nature of the practice of mental healthcare on operational deployments. Twenty-eight British military mental health professionals were identified as having recently returned from deployment, with 35% agreeing to participate in semi-structured qualitative interviews. Results suggest that whilst this population have a range of stressors, their main concern is to work towards the success of the overall mission objectives, mainly through achieving their clinical goals. Such work is impacted by challenges such as ethical difficulties, professional obstacles, bonding with colleagues and personal issues. They do however rely upon a range of intra and inter-personal strategies to overcome these hurdles successfully. A number of suggestions for improved mental healthcare on deployment are also identified. A review of the implications of the findings is offered and recommendations for improved training and support for mental healthcare professionals are explored. Finally, potential avenues for future research are considered. SN - 0010-3853 AD - Behavioral Health Flight, 48 MDOS/SGOW, United States Air Force, RAF Lakenheath, Lakenheath IP279PN UK AD - Faculty of Health and Life Sciences, Coventry University, Priory Street Coventry CV15FB UK AD - Joint Medical Command, Ministry of Defence, Headquarters Surgeon General, Coltman House Whittington Barracks, Lichfield WS14 9PY UK U2 - PMID: 21559921. DO - 10.1007/s10597-011-9407-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104537258&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Kao, Gio AU - Sewell, Edward AU - Jacobson, Sheldon AU - Hall, Shane T1 - New dominance rules and exploration strategies for the 1| r|∑ U scheduling problem. JO - Computational Optimization & Applications JF - Computational Optimization & Applications Y1 - 2012/04// VL - 51 IS - 3 M3 - Article SP - 1253 EP - 1274 SN - 09266003 AB - The paper proposes a new exact approach, based on a Branch, Bound, and Remember (BB&R) algorithm that uses the Cyclic Best First Search (CBFS) strategy, for the 1| r|∑ U scheduling problem, a single machine scheduling problem, where the objective is to find a schedule with the minimum number of tardy jobs. The search space is reduced using new and improved dominance properties and tighter upper bounds, based on a new dynamic programming algorithm. Computational results establish the effectiveness of the BB&R algorithm with CBFS for a broad spectrum of problem instances. In particular, this algorithm was able to solve all problems instances, up to 300 jobs, while existing best known algorithms only solve problems instances up to 200 jobs. Furthermore, the BB&R algorithm with CBFS runs one to two orders of magnitude faster than the current best known algorithm on comparable instances. [ABSTRACT FROM AUTHOR] AB - Copyright of Computational Optimization & Applications is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRODUCTION scheduling KW - ALGORITHMS KW - DYNAMIC programming KW - MATHEMATICAL optimization KW - SYSTEMS engineering KW - Branch and bound algorithms KW - Dynamic programming KW - Scheduling theory and algorithms N1 - Accession Number: 72339009; Kao, Gio 1; Email Address: giokao@uiuc.edu; Sewell, Edward 2; Email Address: esewell@siue.edu; Jacobson, Sheldon 1; Email Address: shj@illinois.edu; Hall, Shane 3; Email Address: shane.hall-03@scott.af.mil; Affiliations: 1: Department of Computer Science, University of Illinois at Urbana-Champaign, 201 North Goodwin Ave. (MC-258) Urbana 61801-2302 USA; 2: Department of Mathematics and Statistics, Southern Illinois University Edwardsville, Edwardsville 62026 USA; 3: Air Mobility Command, Analyses, Assessments, and Lessons Learned, United States Air Force, 1 Soldier Way, B1900W Scott AFB 62225-5307 USA; Issue Info: Apr2012, Vol. 51 Issue 3, p1253; Thesaurus Term: PRODUCTION scheduling; Thesaurus Term: ALGORITHMS; Thesaurus Term: DYNAMIC programming; Thesaurus Term: MATHEMATICAL optimization; Thesaurus Term: SYSTEMS engineering; Author-Supplied Keyword: Branch and bound algorithms; Author-Supplied Keyword: Dynamic programming; Author-Supplied Keyword: Scheduling theory and algorithms; Number of Pages: 22p; Illustrations: 4 Diagrams, 4 Charts; Document Type: Article L3 - 10.1007/s10589-010-9378-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=72339009&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Wei, Shuangqing AU - Kannan, Rajgopal AU - Chakravarthy, Vasu AU - Rangaswamy, Murali T1 - CSI Usage over Parallel Fading Channels under Jamming Attacks: A Game Theory Study. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2012/04// VL - 60 IS - 4 M3 - Article SP - 1167 EP - 1175 SN - 00906778 AB - Consider a parallel channel with M independent flat-fading subchannels. There exists a smart jammer which has possession of a copy of perfect channel state information (CSI) measured and sent back by a receiver to its transmitter. Under this model, a class of two-person zero-sum games is investigated where either achievable mutual information rate or Chernoff bound is taken as the underlying pay-off function with the strategy space of each player determined by respective power control and hopping functions. More specifically, we have tackled and answered the following three fundamental questions. The first one is about whether the transmitter and jammer should hop or fully use all degrees of freedom over the entire parallel channels given the full CSI available to both of them, i.e. to hop or not to hop. The second question is about the impact of sending back CSI on system performance considering that the smart jammer can exploit CSI to further enhance its interference effects, i.e. to feedback or not to feedback. The last question is about whether the amount of feedback information can be reduced given the mutual restrictions between transmitter and jammer, i.e. when to feedback and when not to. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Radio transmitters & transmission -- Fading KW - Parallels (Geometry) KW - Radio interference KW - Game theory KW - Electric power KW - Feedback control systems KW - channel state information (CSI) KW - Fading KW - Games KW - Jamming KW - parallel fading channels KW - Power control KW - Receivers KW - Transmitters KW - zero-sum game N1 - Accession Number: 74305467; Wei, Shuangqing 1; Kannan, Rajgopal 2; Chakravarthy, Vasu 3; Rangaswamy, Murali 3; Affiliations: 1: Louisiana State University, Department of Electrical and Computer Engineering; 2: Louisiana State University, Department of Computer Science; 3: Air Force Research Laboratory, Wright-Patterson, Ohio; Issue Info: Apr2012, Vol. 60 Issue 4, p1167; Subject Term: Radio transmitters & transmission -- Fading; Subject Term: Parallels (Geometry); Subject Term: Radio interference; Subject Term: Game theory; Subject Term: Electric power; Subject Term: Feedback control systems; Author-Supplied Keyword: channel state information (CSI); Author-Supplied Keyword: Fading; Author-Supplied Keyword: Games; Author-Supplied Keyword: Jamming; Author-Supplied Keyword: parallel fading channels; Author-Supplied Keyword: Power control; Author-Supplied Keyword: Receivers; Author-Supplied Keyword: Transmitters; Author-Supplied Keyword: zero-sum game; Number of Pages: 0p; Document Type: Article L3 - 10.1109/TCOMM.2012.021712.100018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=74305467&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Alqadah, Hatim F. AU - Ferrara, Matthew AU - Fan, Howard AU - Parker, Jason T. T1 - Single Frequency Inverse Obstacle Scattering: A Sparsity Constrained Linear Sampling Method Approach. JO - IEEE Transactions on Image Processing JF - IEEE Transactions on Image Processing Y1 - 2012/04// VL - 21 IS - 4 M3 - Article SP - 2062 EP - 2074 SN - 10577149 AB - The linear sampling method (LSM) offers a qualitative image reconstruction approach, which is known as a viable alternative for obstacle support identification to the well-studied filtered backprojection (FBP), which depends on a linearized forward scattering model. Of practical interest is the imaging of obstacles from sparse aperture far-field data under a fixed single frequency mode of operation. Under this scenario, the Tikhonov regularization typically applied to LSM produces poor images that fail to capture the obstacle boundary. In this paper, we employ an alternative regularization strategy based on constraining the sparsity of the solution's spatial gradient. Two regularization approaches based on the spatial gradient are developed. A numerical comparison to the FBP demonstrates that the new method's ability to account for aspect-dependent scattering permits more accurate reconstruction of concave obstacles, whereas a comparison to Tikhonov-regularized LSM demonstrates that the proposed approach significantly improves obstacle recovery with sparse-aperture data. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Image Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SAMPLING (Statistics) KW - MATHEMATICAL models KW - DIGITAL image processing KW - REGULARIZATION (Mathematics) KW - SCATTERING (Mathematics) KW - IMAGE reconstruction KW - INVERSE problems (Differential equations) KW - Apertures KW - Backprojection KW - Electronic mail KW - Equations KW - Inverse problems KW - inverse scattering KW - linear sampling method (LSM) KW - Mathematical model KW - Sampling methods KW - Scattering KW - sparse regularization KW - total variation N1 - Accession Number: 73616122; Alqadah, Hatim F. 1; Ferrara, Matthew 2; Fan, Howard 1; Parker, Jason T. 3; Affiliations: 1: Department of Electrical and Computer Engineering, University of Cincinnati, Cincinnati, OH, USA; 2: Matrix Research Inc., Dayton, OH, USA; 3: Sensors Directorate, Air Force Research Laboratory, Wright Patterson AFB, OH, USA; Issue Info: Apr2012, Vol. 21 Issue 4, p2062; Thesaurus Term: SAMPLING (Statistics); Thesaurus Term: MATHEMATICAL models; Subject Term: DIGITAL image processing; Subject Term: REGULARIZATION (Mathematics); Subject Term: SCATTERING (Mathematics); Subject Term: IMAGE reconstruction; Subject Term: INVERSE problems (Differential equations); Author-Supplied Keyword: Apertures; Author-Supplied Keyword: Backprojection; Author-Supplied Keyword: Electronic mail; Author-Supplied Keyword: Equations; Author-Supplied Keyword: Inverse problems; Author-Supplied Keyword: inverse scattering; Author-Supplied Keyword: linear sampling method (LSM); Author-Supplied Keyword: Mathematical model; Author-Supplied Keyword: Sampling methods; Author-Supplied Keyword: Scattering; Author-Supplied Keyword: sparse regularization; Author-Supplied Keyword: total variation; NAICS/Industry Codes: 541910 Marketing Research and Public Opinion Polling; Number of Pages: 13p; Document Type: Article L3 - 10.1109/TIP.2011.2177992 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=73616122&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Davis, V. A. AU - Mandell, M. J. AU - Cooke, D. L. AU - Wheelock, A. T. AU - Roth, C. J. T1 - Nascap-2k Self-Consistent Simulations of a VLF Plasma Antenna. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2012/04//4/1/2012 Y1 - 2012/04//4/1/2012 VL - 40 IS - 4 M3 - Article SP - 1239 EP - 1247 SN - 00933813 AB - We simulate the plasma response through tens of cycles of the Demonstration and Science Experiments (DSX) kilovolt near-square-wave very low frequency (VLF) (0.1–50 kHz) antenna in Medium Earth Orbit plasma with Nascap-2k. DSX is an Air Force Research Laboratory experiment that will explore the physics of electromagnetic wave injection from space transmitters, wave propagation, and wave-particle interactions in the magnetosphere. DSX will transmit and receive VLF waves and quantify their effect on the trapped electron populations in the magnetosphere. In these preflight calculations, the plasma is modeled with a hybrid particle-in-cell (PIC) approach with PIC ions and fluid barometric electron densities. The plasma response, collected ion currents, and chassis floating potential are computed self-consistently with a near-square-wave bias applied to the antennas. Particle injection and splitting are used to replenish the plasma depleted at the boundary, represent the thermal distribution, and maintain appropriately sized macroparticles. Therefore, limitation of current due to the thermal distribution of ions and the resulting angular momentum barrier is included. Above the ion plasma frequency, the plasma current lags the voltage by about 10^\circ, while below the ion plasma frequency, the current leads the voltage by about 7 ^\circ. The volume ion current shows periodic launch of blocks of energetic ions radially outward. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA antennas KW - SIMULATION methods & models KW - SPACE vehicles KW - SURFACE charging KW - VLF emissions KW - ELECTROSTATIC accelerators N1 - Accession Number: 74223314; Source Information: 4/1/2012, Vol. 40 Issue 4, p1239; Subject Term: PLASMA antennas; Subject Term: SIMULATION methods & models; Subject Term: SPACE vehicles; Subject Term: SURFACE charging; Subject Term: VLF emissions; Subject Term: ELECTROSTATIC accelerators; Subject Term: ; Number of Pages: 9p; ; Document Type: Article; L3 - 10.1109/TPS.2012.2186569 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=74223314&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Sharma, Rajnikant AU - Beard, Randy W. AU - Taylor, Clark N. AU - Quebe, Stephen T1 - Graph-Based Observability Analysis of Bearing-Only Cooperative Localization. JO - IEEE Transactions on Robotics JF - IEEE Transactions on Robotics J1 - IEEE Transactions on Robotics PY - 2012/04// Y1 - 2012/04// VL - 28 IS - 2 M3 - Article SP - 522 EP - 529 SN - 15523098 AB - In this paper, we investigate the nonlinear observability properties of bearing-only cooperative localization. We establish a link between observability and a graph that represents measurements and communication between the robots. It is shown that graph theoretic properties like the connectivity and the existence of a path between two nodes can be used to explain the observability of the system. We obtain the maximum rank of the observability matrix without global information and derive conditions under which the maximum rank can be achieved. Furthermore, we show that for complete observability, all of the nodes in the graph must have a path to at least two different landmarks of known location. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Robotics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPH theory KW - LOCALIZATION theory KW - NONLINEAR theories KW - ROBOTS KW - PATHS & cycles (Graph theory) KW - MULTIAGENT systems N1 - Accession Number: 74091037; Source Information: Apr2012, Vol. 28 Issue 2, p522; Subject Term: GRAPH theory; Subject Term: LOCALIZATION theory; Subject Term: NONLINEAR theories; Subject Term: ROBOTS; Subject Term: PATHS & cycles (Graph theory); Subject Term: MULTIAGENT systems; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.1109/TRO.2011.2172699 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=74091037&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Su, Weifeng AU - Matyjas, John D. AU - Batalama, Stella T1 - Active Cooperation Between Primary Users and Cognitive Radio Users in Heterogeneous Ad-Hoc Networks. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing J1 - IEEE Transactions on Signal Processing PY - 2012/04// Y1 - 2012/04// VL - 60 IS - 4 M3 - Article SP - 1796 EP - 1805 SN - 1053587X AB - In this paper, we consider a heterogeneous ad-hoc network where primary users may cooperate with cognitive radio (CR) users for the transmission of their data. We propose a new cooperation protocol that allows CR users to relay primary user signals in exchange for some spectrum. The spectrum released by primary users is used by CR users for their own data transmission. The proposed protocol maximizes the primary user power savings and the CR users' own data transmission rate. In addition, it provides more robust (potentially continuous) service for CR users, compared to the conventional practice in cognitive networks where cognitive users transmit in the spectrum holes of primary users (i.e., their service is interrupted when primary users need to transmit and no spectrum holes are available). More specifically, we propose a CR user power allocation scheme that maximizes the rate of transmission of CR user own data, for any given CR user power budget and a given bandwidth released from the primary user. Furthermore, we determine a range of possible transmission power levels that can be used by the primary user during cooperation without sacrificing its target transmission rate, and we derive a necessary condition on the quality of the channel between the primary user and the CR user that enables cooperation. Extensive numerical and simulation studies illustrate our theoretical developments and show that cooperation between a primary and CR user may lead, for example, to up to 80% savings of primary user power when compared to a noncooperation scheme at the same transmission power level. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AD hoc networks (Computer networks) KW - DATA transmission systems KW - MIMO systems KW - RANDOM noise theory KW - SIGNAL-to-noise ratio N1 - Accession Number: 73611016; Source Information: Apr2012, Vol. 60 Issue 4, p1796; Subject Term: AD hoc networks (Computer networks); Subject Term: DATA transmission systems; Subject Term: MIMO systems; Subject Term: RANDOM noise theory; Subject Term: SIGNAL-to-noise ratio; Subject Term: ; Number of Pages: 10p; ; Document Type: Article; L3 - 10.1109/TSP.2011.2181841 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=73611016&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Abair, Paul H. T1 - Integrating virtual simulations. JO - Journal of Psychological Issues in Organizational Culture JF - Journal of Psychological Issues in Organizational Culture Y1 - 2012/04// VL - 3 IS - 1 M3 - Article SP - 70 EP - 84 SN - 20418418 AB - The author explores the theory of simulations; explains current trends in instructional theory, digital media, and change management; discusses the impact on instructional and simulation development design; provides an integrated simulation development and implementation model; and provides recommendations for practitioners who are ready to cross the threshold of integrating software-based simulations into their learning environment. Current trends of pervasive computations, contextual fidelity, increasing demand for flexible constructive learning environments, and improved affordability suggest that digital simulations are likely to play a larger role in mainstream education and learning in the 21st century. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Psychological Issues in Organizational Culture is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHANGE management KW - DIGITAL computer simulation KW - EDUCATION -- Philosophy KW - DIGITAL media KW - CLASSROOM environment N1 - Accession Number: 74604673; Abair, Paul H. 1; Affiliations: 1: United States Air Force Academy; Issue Info: Apr2012, Vol. 3 Issue 1, p70; Thesaurus Term: CHANGE management; Subject Term: DIGITAL computer simulation; Subject Term: EDUCATION -- Philosophy; Subject Term: DIGITAL media; Subject Term: CLASSROOM environment; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; Number of Pages: 15p; Document Type: Article L3 - 10.1002/jpoc.20091 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=74604673&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Gannon, Timothy AU - Feng, Peter AU - Sitzabee, William T1 - Reliable Schedule Forecasting in Federal Design-Build Facility Procurement. JO - Lean Construction Journal JF - Lean Construction Journal Y1 - 2012/04// M3 - Article SP - 1 EP - 14 SN - 15551369 AB - Research Question: Do initial schedules provide reliable forecasting for project control? Purpose: The purpose of this research is to understand how scheduling works in federal facility procurement and identify how project change underscores schedule uncertainty. Research Method: Comparative analysis of project schedule data from three case studies. Findings: This paper documents how initial project schedules fail to sufficiently forecast and provide a reliable baseline for total cost, final duration, and activity count for three design-build projects. Most schedule variability occurs after the 100% design benchmark. Activity growth highlights scheduling challenges encountered by the construction managers and general contractors (GCs). Limitations: The research considers three military construction projects managed by the United States Army Corps of Engineers (USACE) on Wright-Patterson Air Force Base, Ohio. Implications: The research indicates a need to reexamine federal design-build schedule specifications and management practices in the pursuit of project control. Value for Practitioners: This paper discusses reliability concerns in activity-based scheduling and promotes an application of lean thinking to public sector construction management. [ABSTRACT FROM AUTHOR] AB - Copyright of Lean Construction Journal is the property of Lean Construction Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDUSTRIAL procurement KW - SCHEDULING KW - CONSTRUCTION contractors KW - MILITARY construction operations KW - construction management KW - federal facility procurement KW - lean construction KW - production control KW - public sector construction KW - scheduling KW - UNITED States. Army. Corps of Engineers KW - UNITED States. Air Force N1 - Accession Number: 118301365; Gannon, Timothy 1; Email Address: timothy.gannon@us.af.mil; Feng, Peter 2; Email Address: peter.feng@us.af.mil; Sitzabee, William 2; Email Address: william.sitzabee@us.af.mil; Affiliations: 1: Masters Student, Graduate Engineering Management, United States Air Force Institute of Technology, Dayton, OH, 45433, USA; 2: Ph.D. Civil Engineering, PE, USAF Lt Col, Assistant Professor, United States Air Force Institute of Technology, Dayton, OH, 45433, USA; Issue Info: 2012, p1; Thesaurus Term: INDUSTRIAL procurement; Thesaurus Term: SCHEDULING; Thesaurus Term: CONSTRUCTION contractors; Subject Term: MILITARY construction operations; Author-Supplied Keyword: construction management; Author-Supplied Keyword: federal facility procurement; Author-Supplied Keyword: lean construction; Author-Supplied Keyword: production control; Author-Supplied Keyword: public sector construction; Author-Supplied Keyword: scheduling ; Company/Entity: UNITED States. Army. Corps of Engineers ; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; NAICS/Industry Codes: 238110 Poured Concrete Foundation and Structure Contractors; NAICS/Industry Codes: 237310 Highway, Street, and Bridge Construction; NAICS/Industry Codes: 236220 Commercial and Institutional Building Construction; NAICS/Industry Codes: 236116 New Multifamily Housing Construction (except For-Sale Builders); NAICS/Industry Codes: 236115 New Single-Family Housing Construction (except For-Sale Builders); NAICS/Industry Codes: 237990 Other Heavy and Civil Engineering Construction; Number of Pages: 14p; Illustrations: 2 Diagrams, 1 Chart, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=118301365&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Hall, RB AU - Rajagopal, KR T1 - Diffusion of a fluid through an anisotropically chemically reacting thermoelastic body within the context of mixture theory. JO - Mathematics & Mechanics of Solids JF - Mathematics & Mechanics of Solids Y1 - 2012/04// VL - 17 IS - 2 M3 - Article SP - 131 EP - 164 SN - 10812865 AB - A mixture theory approach is used to analyze the change in response characteristics of an anisotropic, non-linear viscoelastic fluid diffusing through a finitely deforming thermoelastic body of arbitrary symmetry wherein the fluid chemically reacts with the solid. It is assumed for simplicity that it is possible to characterize the reaction as having a single step and as one in which the reaction products remain within the body, thereby modifying the solid constituent. The effects of the reaction on the solid that render it anisotropic are quantified by means of a tensorial parameter that tracks the extent of the reaction in different directions. Both diffusion-dominated (diffusion of the reactants is far more rapid than the reaction) and reaction-dominated (the reaction is far more rapid than the diffusion of the reactants) processes are considered. Constitutive equations are derived from the requirement that the rate of entropy production be maximized, which makes it possible to characterize the behavior of the body through the specification of three scalar functions: the rate of entropy production function for the mixture, and the Helmholtz free energies of each of the constituents. It is noted that the model may be applied to regions of bodies with locally homogeneous damage, that is, regions damaged at a small enough scale to mimic an anisotropically porous continuum. Macroscale damage may also be modeled via the boundary conditions described in Section 5. [ABSTRACT FROM PUBLISHER] AB - Copyright of Mathematics & Mechanics of Solids is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANISOTROPY -- Mathematical models KW - SYMMETRY (Mathematics) KW - ENTROPY KW - HELMHOLTZ equation KW - BOUNDARY value problems KW - anisotropic KW - chemical KW - deformation KW - diffusion KW - maximum dissipation KW - mixture KW - reaction KW - thermodynamics N1 - Accession Number: 73525829; Hall, RB 1; Rajagopal, KR 2; Source Information: Apr2012, Vol. 17 Issue 2, p131; Subject: ANISOTROPY -- Mathematical models; Subject: SYMMETRY (Mathematics); Subject: ENTROPY; Subject: HELMHOLTZ equation; Subject: BOUNDARY value problems; Author-Supplied Keyword: anisotropic; Author-Supplied Keyword: chemical; Author-Supplied Keyword: deformation; Author-Supplied Keyword: diffusion; Author-Supplied Keyword: maximum dissipation; Author-Supplied Keyword: mixture; Author-Supplied Keyword: reaction; Author-Supplied Keyword: thermodynamics; Number of Pages: 34p; Document Type: Article; Full Text Word Count: 1233 L3 - 10.1177/1081286511407754 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=73525829&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Folsom, Thomas C.1,2 T1 - Finding Superman in Cyberspace (Poisoned Flowers, Pt. 1): Resolving Focal Point and Trademark Disputes on the Internet and in Cyberspace by Rewriting Code. JO - McGeorge Law Review JF - McGeorge Law Review J1 - McGeorge Law Review PY - 2012/04// Y1 - 2012/04// VL - 43 IS - 2 CP - 2 M3 - Article SP - 199 EP - 300 SN - 15209245 AB - In cyberspace, dynamically coded focal points (some but not all of which include trademarked expressions) don't just provide salient references; they can actually deliver a person's augmented presence to a location. Placing reliable focal points as navigational markers in coded space is useful. Indexing them is even better. Both these activities support the public good by providing a virtual map to cyberspace, thereby promoting access, navigation, information-activity, and trust among vulnerable augmented presences (the capacities of persons perceived within, and perceiving, an objective cyberspace, but without the full sensory and other anchors provided in ordinary space). In an objective cyberspace that relies on a virtual map featuring dynamically coded focal points functioning as markers and spoilers, addresses, magnets, roadblocks, or detours, there is an opportunity to describe norms, to distinguish forms of offensive conduct in respect of new technological uses beyond trademark, and to prescribe effective, modest, and technologically reasonable remedies. I propose that conduct which: (a) alters the virtual map, (b) plants deceptive focal points, (c) ambushes a user of focal points with uninvited, invasive, or false invitations, or (d) expropriates, blocks, or spoils focal points otherwise available should be an actionable focal point offense All focal point offenses involve expressions functioning as "markers" or "spoilers" in cyberspace. Some of the more effective focal points incorporate trademarked expressions. Quite apart from trademark-related law, I claim the specified focal point offense in cyberspace constitutes independently actionable misrepresentation or fraud, misappropriation or theft, spoilage or unfair competition (and, in some cases, unjust enrichment). While some focal point offenses might also constitute trademark infringement, it is not immediately helpful to try to resolve all focal point offenses in cyberspace by ordinary principles of trademark law as developed in ordinary space. "Ordinary" trademark law, as currently misapplied to focal point conflicts in cyberspace, has raised curiously novel defenses and other aberrations that more frequently obscure than reveal what is happening in cyberspace while threatening to deface trademark law itself. Current trademark likelihood of confusion factors, even when carefully applied, cannot reliably predict a likelihood of confusion by "invisible" or "attenuated" uses of expressions in cyberspace that incorporate trademarked terms, much less resolve the real problems caused by focal point offenses. In a prior article, Space Pirates in Cyberspace,3 I proposed the first half of a comprehensive solution: a modified set of trademark likelihood-of-confusion factors for such cases. Now I propose the focal point offense as the other half of the solution and I explicitly link the trademark-style and focal point-style offenses into one unified theory. The unified theory is recognizably derived from existing patterns of law already regulating misrepresentation, misappropriation, and unfair competition, and can easily coexist with current trademark-related law. Not only is it better than any other competing explanation of, or proposal for how to deal with invisible or attenuated trademark conflicts in cyberspace, but it is the first theory ever to consider the problem of dynamic focal points in cyberspace. Moreover, it is available for immediate implementation because it is practical, principled, and predictable. It works, it is efficient, and it is authorized. [ABSTRACT FROM AUTHOR] KW - Cyberspace KW - Trademarks -- Law & legislation KW - Internet -- Law & legislation KW - Unfair competition KW - Fraud KW - Trademark infringement N1 - Accession Number: 92001767; Authors:Folsom, Thomas C. 1,2; Affiliations: 1: Professor, Regent University School of Law; 2: Georgetown University Law Center, B.S., United States Air Force Academy; Subject: Cyberspace; Subject: Trademarks -- Law & legislation; Subject: Internet -- Law & legislation; Subject: Unfair competition; Subject: Fraud; Subject: Trademark infringement; Number of Pages: 102p; Court Cases: eBay v. MercExchange; 547 U.S. 388 (2006); Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=92001767&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR AU - McAvin, James C. AU - Swanson, Katherine I. AU - Chan, Adeline S. T. AU - Quintana, Miguel AU - Coleman, Russell E. T1 - Leishmania Detection in Sand Flies Using a Field-Deployable Real-Time Analytic System. JO - Military Medicine JF - Military Medicine Y1 - 2012/04// VL - 177 IS - 4 M3 - Article SP - 460 EP - 466 PB - AMSUS SN - 00264075 AB - We describe here the development and evaluation of advanced vector surveillance analytic technologies for real-time leishmaniasis risk assessment. Leishmania genus and visceral leishmaniasis causative agent-specific dual fluorogenic-probe hydrolysis (TaqMan), thermally stable (freeze-dried) polymerase chain reaction assays were developed using field-durable analytic instrumentation. In laboratory testing with a panel of diverse Leishmania species from culture and infected sand flies, the sensitivity and specificity of both assays were 100% concordant with DNA sequencing. In specificity testing with Leishmania genetic near neighbors, clinically significant organisms, and human genomic DNA, no detectable fluorescence above background was observed. Field evaluation was conducted in southern Iraq using wild sand flies. In field testing, Leishmania genus assay was 100% sensitive and 96% specific with a single false-positive result. The visceral leishmaniasis genotype assay was 100% sensitive and 100% specific compared to DNA sequencing. Thermally stable polymerase chain reaction assays vastly simplified transportation and storage. Assay preparation and analysis required less than 2 hours. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEISHMANIASIS -- Diagnosis KW - POLYMERASE chain reaction KW - ASSAYING KW - NUCLEOTIDE sequence KW - HUMAN genome N1 - Accession Number: 74456722; McAvin, James C. 1,2,3; Swanson, Katherine I. 1; Chan, Adeline S. T. 1; Quintana, Miguel 4; Coleman, Russell E. 1,5; Source Information: Apr2012, Vol. 177 Issue 4, p460; Subject: LEISHMANIASIS -- Diagnosis; Subject: POLYMERASE chain reaction; Subject: ASSAYING; Subject: NUCLEOTIDE sequence; Subject: HUMAN genome; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=74456722&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 2012-06972-007 AN - 2012-06972-007 AU - Sachau, Daniel A. AU - Gertz, Jessica AU - Matsch, Mahlia AU - Palmer, Ashley Johnson AU - Englert, David T1 - Work-life conflict and organizational support in a military law enforcement agency. JF - Journal of Police and Criminal Psychology JO - Journal of Police and Criminal Psychology Y1 - 2012/04// VL - 27 IS - 1 SP - 63 EP - 72 CY - Germany PB - Springer SN - 0882-0783 SN - 1936-6469 AD - Sachau, Daniel A., Department of Psychology, Minnesota State University, Mankato, MN, US, 56001 N1 - Accession Number: 2012-06972-007. Partial author list: First Author & Affiliation: Sachau, Daniel A.; Department of Psychology, Minnesota State University, Mankato, MN, US. Release Date: 20120430. Correction Date: 20160616. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Family Conflict; Law Enforcement; Military Personnel. Minor Descriptor: Organizations. Classification: Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360); Aged (65 yrs & older) (380). Tests & Measures: Perceived Organizational Support Scale; Supervisor Support Scale DOI: 10.1037/t50232-000; Work-Family Culture Scale DOI: 10.1037/t09801-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Apr, 2012. Publication History: First Posted Date: Dec 6, 2011. Copyright Statement: Springer Science + Business Media, LLC. 2011. AB - The purpose of this study was to examine the extent to which work-life conflict and organizational support for work-life balance are related to job satisfaction and turnover intentions for military law enforcement personnel. More specifically, 1203 members of the United States Air Force Office of Special Investigations completed a survey that measured family-to-work conflict, work-to-family conflict, perceptions of work-life support from the organization, support from immediate supervisors, and support from peers. Work-to-family and family-to-work conflict were related to job satisfaction and turnover intentions. Perceived social support, especially at the organizational level, was negatively correlated with work-to-family and family-to-work conflict. Agents within the OSI were experiencing more work-to-family and family-to-work conflict than OSI support staff although the relationships among support, conflict and satisfaction were the same for the two groups. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - work life conflict KW - organizational support KW - military law enforcement KW - 2012 KW - Family Conflict KW - Law Enforcement KW - Military Personnel KW - Organizations KW - 2012 DO - 10.1007/s11896-011-9095-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-06972-007&site=ehost-live&scope=site UR - David.Englert@afncr.af.mil UR - apalmer@hoganassessments.com UR - Mahlia.Matsch@pattersondental.com UR - jessicagertz@hotmail.com UR - Sachau@mnsu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-12226-005 AN - 2012-12226-005 AU - Block, Robert M. T1 - A discussion of the effect of open-book and closed-book exams on student achievement in an introductory statistics course. JF - PRIMUS: Problems, Resources, and Issues in Mathematics Undergraduate Studies JO - PRIMUS: Problems, Resources, and Issues in Mathematics Undergraduate Studies Y1 - 2012/04// VL - 22 IS - 3 SP - 228 EP - 238 CY - United Kingdom PB - Taylor & Francis SN - 1051-1970 SN - 1935-4053 AD - Block, Robert M., Dean of Academics, HQ USAFA, USAFA, 5220 Cedar Drive, Colorado Springs, CO, US, 80840 N1 - Accession Number: 2012-12226-005. Partial author list: First Author & Affiliation: Block, Robert M.; Dean of Academics, US Air Force Academy Preparatory School, Colorado Springs, CO, US. Release Date: 20120611. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Academic Achievement; College Students; Mathematics; Statistics. Classification: Academic Learning & Achievement (3550). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Literature Review. References Available: Y. Page Count: 11. Issue Publication Date: Apr, 2012. Copyright Statement: Taylor & Francis Group, LLC AB - The use of open-book tests, closed-book tests, and notecards on tests in an introductory statistics course is described in this article. A review of the literature shows that open-book assessments are universally recognized to reduce anxiety. The literature is mixed however on whether deeper learning or better preparation occurs with open-book exams. This article reviews the Math 300 Statistics course testing policy which evolved from closed-book exams to open-book exams to closed-book exams with notecards. Our experience led to increased student enjoyment of the course while continuing to encourage deeper student learning. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - student achievement KW - statistics KW - college students KW - mathematics KW - 2012 KW - Academic Achievement KW - College Students KW - Mathematics KW - Statistics KW - 2012 DO - 10.1080/10511970.2011.565402 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-12226-005&site=ehost-live&scope=site UR - robert.m.block@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-07419-016 AN - 2012-07419-016 AU - McCauley, Mathew AU - Liebling-Kalifani, Helen AU - Hughes, Jamie Hacker T1 - Military mental health professionals on operational deployment: An exploratory study. JF - Community Mental Health Journal JO - Community Mental Health Journal JA - Community Ment Health J Y1 - 2012/04// VL - 48 IS - 2 SP - 238 EP - 248 CY - Germany PB - Springer SN - 0010-3853 SN - 1573-2789 AD - McCauley, Mathew, Behavioral Health Flight, United States Air Force, RAF Lakenheath, 48 MDOS/SGOW, Lakenheath, United Kingdom, IP279PN N1 - Accession Number: 2012-07419-016. PMID: 21559921 Partial author list: First Author & Affiliation: McCauley, Mathew; Behavioral Health Flight, United States Air Force, RAF Lakenheath, Lakenheath, United Kingdom. Release Date: 20120430. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Mental Health Personnel; Military Deployment; Occupational Stress. Minor Descriptor: Military Personnel. Classification: Professional Education & Training (3410); Military Psychology (3800). Population: Human (10). Location: United Kingdom. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Interview; Qualitative Study. References Available: Y. Page Count: 11. Issue Publication Date: Apr, 2012. Publication History: First Posted Date: May 11, 2011; Accepted Date: Apr 25, 2011; First Submitted Date: Feb 9, 2010. Copyright Statement: Springer Science+Business Media, LLC. 2011. AB - This exploratory study aimed to develop greater insight into the occupational and personal nature of the practice of mental healthcare on operational deployments. Twenty-eight British military mental health professionals were identified as having recently returned from deployment, with 35% agreeing to participate in semi-structured qualitative interviews. Results suggest that whilst this population have a range of stressors, their main concern is to work towards the success of the overall mission objectives, mainly through achieving their clinical goals. Such work is impacted by challenges such as ethical difficulties, professional obstacles, bonding with colleagues and personal issues. They do however rely upon a range of intra and inter-personal strategies to overcome these hurdles successfully. A number of suggestions for improved mental healthcare on deployment are also identified. A review of the implications of the findings is offered and recommendations for improved training and support for mental healthcare professionals are explored. Finally, potential avenues for future research are considered. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - military mental health professionals KW - operational deployment KW - stress KW - 2012 KW - Mental Health Personnel KW - Military Deployment KW - Occupational Stress KW - Military Personnel KW - 2012 DO - 10.1007/s10597-011-9407-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-07419-016&site=ehost-live&scope=site UR - mathew.mccauley@lakenheath.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-08564-010 AN - 2012-08564-010 AU - Arthur, Winfred Jr. AU - Glaze, Ryan M. AU - Bhupatkar, Alok AU - Villado, Anton J. AU - Bennett, Winston Jr. AU - Rowe, Leah J. T1 - Team task analysis: Differentiating between tasks using team relatedness and team workflow as metrics of team task interdependence. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2012/04// VL - 54 IS - 2 SP - 277 EP - 295 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Arthur, Winfred Jr., Department of Psychology, Texas A&M University, 4235 TAMU, College Station, TX, US, 77843-4235 N1 - Accession Number: 2012-08564-010. PMID: 22624293 Partial author list: First Author & Affiliation: Arthur, Winfred Jr.; Texas A&M University, College Station, TX, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20120618. Correction Date: 20151207. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Task Analysis; Teams. Minor Descriptor: Interdependence. Classification: Transportation (4090); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 19. Issue Publication Date: Apr, 2012. Publication History: Accepted Date: Dec 2, 2011; First Submitted Date: Apr 16, 2010. Copyright Statement: Human Factors and Ergonomics Society. 2012. AB - Objective: As a constructive replication and extension of Arthur, Edwards, Bell, Villado, and Bennett (2005), the objective of the current study was to further investigate the efficacy of team relatedness and team workflow ratings (along with their composite) as metrics of interdependence. Background: Although an analysis of task and job interdependence has important implications and uses in domains such as job design, selection, and training, the job analysis literature has been slow to develop an effective method to identify team-based tasks and jobs. Method: To achieve the study’s objectives, 140 F-16 fighter pilots (35 four-person teams) rated 34 task and activity statements in terms of their team relatedness and team workflow. Results: The results indicated that team relatedness and team workflow effectively differentiated between tasks with varying levels of interdependency (as identified by instructor pilots who served as subject matter experts) within the same job. In addition, teams that accurately perceived the level of interdependency performed better on a four-ship F-16 flight-training program than those that did not. Conclusion: Team relatedness and team workflow ratings can effectively differentiate between tasks with varying levels of interdependency. Application: Like traditional individual task or job analysis, this information can serve as the basis for specified human resource functions and interventions, and as diagnostic indicators as well. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - task interdependence KW - team relatedness KW - team task analysis KW - team workflow KW - team based jobs KW - fighter pilots KW - 2012 KW - Aircraft Pilots KW - Task Analysis KW - Teams KW - Interdependence KW - 2012 DO - 10.1177/0018720811435234 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-08564-010&site=ehost-live&scope=site UR - w-arthur@neo.tamu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Brahma, Swastik AU - Chatterjee, Mainak AU - Kwiat, Kevin AU - Varshney, Pramod K. T1 - Traffic management in wireless sensor networks: Decoupling congestion control and fairness JO - Computer Communications JF - Computer Communications Y1 - 2012/03/15/ VL - 35 IS - 6 M3 - Article SP - 670 EP - 681 SN - 01403664 AB - Abstract: In this paper, we propose a distributed congestion control algorithm for tree based communications in wireless sensor networks, that seeks to adaptively assign a fair and efficient transmission rate to each node. In our algorithm, each node monitors its aggregate output and input traffic rate. Based on the difference of the two, a node then decides to increase (if the output rate is more) or decrease (if the input rate is more) the bandwidth allocable to a flow originating from itself and to those being routed through it. Since the application requirements in sensor network follow no common trait, our design abstracts the notion of fairness, allowing for the development of a generic utility controlling module. Such separation of the utility and fairness controlling modules enable each one to use a separate control law, thereby portraying a more flexible design. The working of our congestion control is independent of the underlying routing algorithm and is designed to adapt to changes in the underlying routing topology. We evaluate the performance of the algorithm via extensive simulations using an event-driven packet level simulator. The results suggest that the proposed protocol acquires a significantly high goodput of around 95% of the actual transmission rate, converges quickly to the optimal rate, and attains the desired fairness. [Copyright &y& Elsevier] AB - Copyright of Computer Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISTRIBUTED computing KW - ALGORITHMS KW - BANDWIDTHS KW - COMPUTER network protocols KW - AUTOMATIC control KW - WIRELESS sensor networks KW - DECOUPLING (Mathematics) KW - COMPUTER simulation KW - Congestion control KW - Distributed algorithms KW - Fairness KW - Sensor networks N1 - Accession Number: 73277287; Brahma, Swastik 1; Email Address: sbrahma@eecs.ucf.edu; Chatterjee, Mainak 1; Email Address: mainak@eecs.ucf.edu; Kwiat, Kevin 2; Email Address: kevin.kwiat@rl.af.mil; Varshney, Pramod K. 3; Email Address: varshney@syr.edu; Affiliations: 1: Department of EECS at the University of Central Florida, Orlando, FL, United States; 2: Information Directorate at Air Force Research Laboratory, Rome, NY, United States; 3: Department of EECS at Syracuse University, Syracuse, NY, United States; Issue Info: Mar2012, Vol. 35 Issue 6, p670; Thesaurus Term: DISTRIBUTED computing; Thesaurus Term: ALGORITHMS; Thesaurus Term: BANDWIDTHS; Thesaurus Term: COMPUTER network protocols; Thesaurus Term: AUTOMATIC control; Subject Term: WIRELESS sensor networks; Subject Term: DECOUPLING (Mathematics); Subject Term: COMPUTER simulation; Author-Supplied Keyword: Congestion control; Author-Supplied Keyword: Distributed algorithms; Author-Supplied Keyword: Fairness; Author-Supplied Keyword: Sensor networks; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.comcom.2011.09.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=73277287&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Slep, Amy M. Smith1,2 AU - Heyman, Richard E.1,2 AU - Snarr, Jeffery D.1,2 T1 - Corrigendum to “Child emotional aggression and abuse: Definitions and prevalence” [Child Abuse & Neglect 35 (2011) 783–796]. JO - Child Abuse & Neglect JF - Child Abuse & Neglect J1 - Child Abuse & Neglect PY - 2012/03// Y1 - 2012/03// VL - 36 IS - 3 CP - 3 M3 - Correction notice SP - 268 EP - 268 SN - 01452134 N1 - Accession Number: 74096354; Authors:Slep, Amy M. Smith 1,2; Heyman, Richard E. 1,2; Snarr, Jeffery D. 1,2; Affiliations: 1: Department of Psychology, Stony Brook University, Stony Brook, NY 11794-2500, USA; 2: United States Air Force Family Advocacy Program 1 , Lackland-Kelly Air Force Base, San Antonio, TX, USA; Number of Pages: 1p; Record Type: Correction notice L3 - 10.1016/j.chiabu.2011.07.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=74096354&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR AU - Noble, Andrew C. AU - King, Galen B. AU - Laurendeau, Normand M. AU - Gord, James R. AU - Roy, Sukesh T1 - Nonlinear Thermoacoustic Instability Dynamics in a Rijke Tube. JO - Combustion Science & Technology JF - Combustion Science & Technology Y1 - 2012/03// VL - 184 IS - 3 M3 - Article SP - 293 EP - 322 SN - 00102202 AB - We present a data-driven nonlinear and chaos theory–based analysis of thermoacoustic instabilities in a simple Rijke tube. Thermoacoustic instability modes in this simple Rijke tube display very rich nonlinear behavior because of the interaction of acoustic modes and unsteady heat-release processes during combustion. This approach of analyzing thermoacoustic instabilities, their evolution, and interactions differs from traditional linear time-series–based approaches, such as the Fourier transform or the autocorrelation function. The objectives of this work are to address the limitations of conventional linear and model-based nonlinear analyses and to describe the potential of data-driven nonlinear and chaos theory–based analyses to gain a deeper understanding of thermoacoustic instability dynamics for reacting flows. The Rijke tube permits investigation of the nonlinear dynamics of thermoacoustic instabilities in a very systematic way by using picosecond time-resolved laser-induced fluorescence (PITLIF) of the OH radical at a rate of 2500 Hz. The 2500-Hz measurement bandwidth is sufficient to capture all thermoacoustic instability modes encountered in the Rijke tube. Through the use of these nontraditional analyses, we find that thermoacoustic instabilities within the Rijke tube contain chaotic behavior. A simple low-order approximate model and a data-adaptive feedback controller are also introduced for the control of thermoacoustic instabilities. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Thermoacoustics KW - Nonlinear models (Statistics) KW - Chaos theory KW - Heat release rates KW - Time-resolved measurements KW - Laser-induced fluorescence KW - Electric controllers KW - Chaos KW - Combustion instabilities KW - Data-driven KW - Feedback control KW - Nonlinear N1 - Accession Number: 71860932; Noble, Andrew C. 1; King, Galen B. 1; Email Address: kinggb@purdue.edu; Laurendeau, Normand M. 1; Gord, James R. 2; Roy, Sukesh 3; Affiliations: 1: Purdue University, School of Mechanical Engineering, USA; 2: Air Force Research Laboratory, Propulsion Directorate, USA; 3: Spectral Energies, USA; Issue Info: Mar2012, Vol. 184 Issue 3, p293; Subject Term: Thermoacoustics; Subject Term: Nonlinear models (Statistics); Subject Term: Chaos theory; Subject Term: Heat release rates; Subject Term: Time-resolved measurements; Subject Term: Laser-induced fluorescence; Subject Term: Electric controllers; Author-Supplied Keyword: Chaos; Author-Supplied Keyword: Combustion instabilities; Author-Supplied Keyword: Data-driven; Author-Supplied Keyword: Feedback control; Author-Supplied Keyword: Nonlinear; Number of Pages: 30p; Document Type: Article L3 - 10.1080/00102202.2011.635614 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=71860932&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Reichenstein, William AU - Horan, Stephen M. AU - Jennings, William W. AD - Baylor U AD - CFA Institute, Charlottesville, VA AD - US Air Force Academy T1 - Two Key Concepts for Wealth Management and Beyond: Errata JO - Financial Analysts Journal JF - Financial Analysts Journal Y1 - 2012/03//March-April 2012 VL - 68 IS - 2 SP - 13 EP - 13 SN - 0015198X N1 - Accession Number: 1416357; Publication Type: Journal Article; Update Code: 201402 KW - Asset Pricing; Trading Volume; Bond Interest Rates G12 L3 - http://www.cfapubs.org/loi/faj UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1416357&site=ehost-live&scope=site UR - http://www.cfapubs.org/loi/faj DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Babcock, Judson AU - Albertani, Roberto AU - Abate, Gregg T1 - Experimental Estimation of the Rotary Damping Coefficients of a Pliant Wing. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2012/03//Mar/Apr2012 Y1 - 2012/03//Mar/Apr2012 VL - 49 IS - 2 M3 - Article SP - 390 EP - 397 SN - 00218669 AB - This paper describes the experimental estimation of the rotary-damping coefficients of micro air vehicle (MAV) wings using a novel system for dynamic wind-tunnel testing. Two geometrically identical Zimmerman wings are used, one rigid and one flexible. The flexible wing consists of a perimeter-reinforced latex membrane with three levels of prestrain. A two-degrees-of-freedom motion rig permits the control of the two individual components of the rotary-damping moment. A modern design of experiments methodology was used to elucidate the correlation between the wings' elastic membrane prestrain state and the aerodynamic characteristics. For the flexible wing, elastic deformations are measured using visual image correlation and evaluated using a dimensionless parameter. The resulting aerodynamic model compares well with static reference data. The presence of dynamic changes in the angle of attack or pitch angle has a significant effect on the response of the rigid and flexible MAV wings, particularly on the pitching moment coefficient. At the current levels of the dimensionless membrane wing elastic prestrain, the pretension strain did not exhibit any correlation with the rotary-damping moment coefficients, whereas the pretension strain level does appear as a factor in the rotary-damping drag coefficient. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICRO air vehicles KW - WIND tunnels KW - AERODYNAMICS KW - EXCAVATION KW - VIBRATION (Mechanics) N1 - Accession Number: 75244963; Source Information: Mar/Apr2012, Vol. 49 Issue 2, p390; Subject Term: MICRO air vehicles; Subject Term: WIND tunnels; Subject Term: AERODYNAMICS; Subject Term: EXCAVATION; Subject Term: VIBRATION (Mechanics); Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.2514/1.C031161 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=75244963&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Randall, Ryan AU - Shkarayev, Sergey AU - Abate, Gregg AU - Babcock, Judson T1 - Longitudinal Aerodynamics of Rapidly Pitching Fixed-Wing Micro Air Vehicles. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2012/03//Mar/Apr2012 Y1 - 2012/03//Mar/Apr2012 VL - 49 IS - 2 M3 - Article SP - 453 EP - 471 SN - 00218669 AB - Some fixed-wing vertical-takeoff-and-landing aircraft can transition between two flight modes: forward flight and near-hover. This study was conducted to improve the transition performance of such vehicles. The experimental model consists of a rigid Zimmerman wing and a propulsion system with contra-rotating propellers. It was rapidly pitched about its aerodynamic center at an average freestream Reynolds number of 86,000. Five nondimensional pitching rates were used, along with two elevator deflections and three propulsive settings. The model was tested statically, and several observations were made. At constant throttle setting, from 20 to 70 deg, both advance ratio and thrust coefficient increase linearly with angle of attack. Higher throttle setting results in greater stall delay, causing the maximum lift coefficient to increase. When throttle setting increases, lift and drag coefficients increase throughout the tested angle-of-attack domain. Rapid-pitching tests showed that nose-up pitching delays stall and nose-down pitching hastens it. Lift and drag coefficients generally increase with positive pitching rate and decrease with negative pitching rate. Wing aerodynamic efficiency is virtually independent of throttle setting, elevator deflection, and pitching rate between 30 and 70 deg angle of attack. The propulsion system is not sensitive to rapid pitching with regard to thrust, normal force, or propulsive moment. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERIAL propellers KW - REYNOLDS number KW - AERODYNAMICS KW - AIRPLANE wings KW - AERONAUTICS N1 - Accession Number: 75244970; Source Information: Mar/Apr2012, Vol. 49 Issue 2, p453; Subject Term: AERIAL propellers; Subject Term: REYNOLDS number; Subject Term: AERODYNAMICS; Subject Term: AIRPLANE wings; Subject Term: AERONAUTICS; Subject Term: ; Number of Pages: 19p; ; Document Type: Article; L3 - 10.2514/1.C031378 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=75244970&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Chakravarty, Uttam Kumar T1 - Vibration Characteristics of the Wings of Micro Air Vehicles. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2012/03//Mar/Apr2012 Y1 - 2012/03//Mar/Apr2012 VL - 49 IS - 2 M3 - Article SP - 644 EP - 650 SN - 00218669 AB - A finite-element model is developed for the vibration characteristics (natural frequencies and mode shapes) of the biologically inspired wings of micro air vehicles. The wings are known as the composite wing, batten-reinforced composite-polyester-fabric (BRCPF) wing and the perimeter-reinforced composite-polyester-fabric (PRCPF) wing. The wings are constructed by attaching the skin of polyester fabric to the reinforced structures of graphite-epoxy (T300-5208), except for the composite wing, which does not have the skin. The effect of added mass, damping, and aerodynamic pressure on the vibration characteristics of the wings is investigated. The wings are vibrated in vacuum and in air for investigating the effect of added mass and damping on their vibration characteristics. Natural frequencies of the wings increase with mode; however, they decrease in air from those in vacuum due to the added mass of surrounding air. Damping is low and has minimal influence on the natural frequencies of the wings but helps to reduce the out-of-plane modal amplitude of vibration. The composite wing has the highest natural frequencies among the three wings. On the other hand, the natural frequencies of the BRCPF wing are higher than those of the PRCPF wing. Aerodynamic pressure is estimated from the low-speed wind-tunnel test data, where the angle of attack of the wings and freestream velocity of air are varied. The effect of aerodynamic pressure on the first and second natural frequencies of the wings is not significant, although the third natural frequencies of the wings increase with aerodynamic pressure. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICRO air vehicles KW - AIRPLANE wings KW - AERODYNAMICS KW - GRAPHITE KW - PRESSURE N1 - Accession Number: 75244987; Source Information: Mar/Apr2012, Vol. 49 Issue 2, p644; Subject Term: MICRO air vehicles; Subject Term: AIRPLANE wings; Subject Term: AERODYNAMICS; Subject Term: GRAPHITE; Subject Term: PRESSURE; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.2514/1.C031649 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=75244987&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Chen, M. Y. AU - Ko, R. T. T1 - Nondestructive assessment of pore size in foam-based hybrid composite material. JO - Journal of Elastomers & Plastics JF - Journal of Elastomers & Plastics Y1 - 2012/03// VL - 44 IS - 2 M3 - Article SP - 177 EP - 188 SN - 00952443 AB - In situ nondestructive evaluation (NDE) during processing of high-temperature polymer-based hybrids offers great potential to gain close control of and achieve the desired level of pore size, with low overall development cost. During the polymer-curing cycle, close control over the evolution of volatiles would be beneficial to avoid the presence of pores or control of their sizes. Traditional NDE methods cannot realistically be expected to evaluate individual pores in such components as each pore evolves and grows during curing. However, NDE techniques offer the potential to detect and quantify the macroscopic response of many pores that are undesirable or intentionally introduced into these advanced materials. In this article, preliminary results will be presented for nondestructive assessment of pore size in foam-based hybrid composite materials using ultrasonic techniques. The ultrasonic method was chosen due to its high sensitivity to the change of composition in material, ability to provide the required depth of penetration and ability to provide the needed modulus information for the cured material through appropriate velocity measurements. Pore size was evaluated through the frequency content of ultrasonic signal. The effects of pore size on the attenuation of ultrasound were studied. Feasibility of this method was demonstrated on two types of foams with various pore sizes. [ABSTRACT FROM PUBLISHER] AB - Copyright of Journal of Elastomers & Plastics is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPOSITE materials KW - NONDESTRUCTIVE testing KW - POLYMERS KW - PORE size (Materials) KW - FOAM KW - foam KW - nondestructive KW - pore size KW - ultrasonic N1 - Accession Number: 73364858; Chen, M. Y. 1; Ko, R. T. 2; Source Information: Mar2012, Vol. 44 Issue 2, p177; Subject: COMPOSITE materials; Subject: NONDESTRUCTIVE testing; Subject: POLYMERS; Subject: PORE size (Materials); Subject: FOAM; Author-Supplied Keyword: foam; Author-Supplied Keyword: nondestructive; Author-Supplied Keyword: pore size; Author-Supplied Keyword: ultrasonic; Number of Pages: 12p; Document Type: Article; Full Text Word Count: 3452 L3 - 10.1177/0095244311426000 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=73364858&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Liu, Yingtao AU - Fard, Masoud Yekani AU - Chattopadhyay, Aditi AU - Doyle, Derek T1 - Damage assessment of CFRP composites using a time–frequency approach. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2012/03//3/1/2012 VL - 23 IS - 4 M3 - Article SP - 397 EP - 413 SN - 1045389X AB - A damage assessment methodology using a time–frequency signal processing technique is presented in this article. Delaminations are detected in composite structures with multiple stiffeners. Because Lamb waves are complex in nature, due to wave dispersion and scattering, a robust signal processing technique is required to extract features from Lamb wave signals. In this article, the matching pursuit decomposition algorithm is used for extracting wavelets from the Lamb wave signals in the time–frequency domain. A small time–frequency atom dictionary is defined to avoid the exhaustive search over the time–frequency domain and to reduce the computation costs. The propagation characteristics of Lamb waves in stiffened composite panels are investigated. The delaminations are detected by identifying the converted Lamb wave modes introduced by the structural imperfection. A two-step damage detection approach, which uses both pulse-echo and pitch-catch active sensing schemes, is developed for the identification of delaminations. The delamination is quantified using a signal energy-based damage index. The matching pursuit decomposition algorithm is further used to localize the delamination position by solving a set of nonlinear equations. The results show that the matching pursuit decomposition algorithm can be used to identify and localize the seeded delaminations in composite structures with complex geometries and material properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - SIGNAL processing KW - LAMB waves KW - INFORMATION measurement KW - BEAMFORMING KW - ADAPTIVE signal processing KW - SIGNAL theory (Telecommunication) KW - delamination KW - localization KW - matching pursuit decomposition KW - quantification N1 - Accession Number: 73984820; Liu, Yingtao 1; Fard, Masoud Yekani 1; Chattopadhyay, Aditi 1; Doyle, Derek 2; Affiliations: 1: School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, USA; 2: Air Force Research Laboratory/Space Vehicles Directorate, Kirtland AFB, USA; Issue Info: 3/1/2012, Vol. 23 Issue 4, p397; Thesaurus Term: ALGORITHMS; Subject Term: SIGNAL processing; Subject Term: LAMB waves; Subject Term: INFORMATION measurement; Subject Term: BEAMFORMING; Subject Term: ADAPTIVE signal processing; Subject Term: SIGNAL theory (Telecommunication); Author-Supplied Keyword: delamination; Author-Supplied Keyword: localization; Author-Supplied Keyword: matching pursuit decomposition; Author-Supplied Keyword: quantification; Number of Pages: 17p; Document Type: Article; Full Text Word Count: 8733 L3 - 10.1177/1045389X11434171 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=73984820&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Arritt, Brandon J AU - Smith, David R. AU - Khraishi, Tariq A T1 - Analytically describing the temperature-dependent constitutive parameters of an electromagnetic metamaterial. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2012/03//3/1/2012 VL - 23 IS - 4 M3 - Article SP - 463 EP - 471 SN - 1045389X AB - Analogous to mechanical systems, modeling the electromagnetic (EM) performance of large and complex metamaterial structures requires the use of effective-medium/constitutive properties. Constitutive properties are critical for efficiently bridging the gap between subwavelength geometry and performance at the mesoscale. In this article, the temperature-dependent effective medium properties for a metamaterial electric-inductive-capacitive (ELC) resonator are described analytically. ELC structures are commonly used in metamaterial designs to provide a tailored electric response to EM waves. An equivalent circuit model, coupled with analytic expressions for the capacitances, inductance, and resistance of the ELC resonator, is utilized to describe how thermally induced mechanical strain and changes in material properties manifest as temperature-dependent permittivity and permeability curves for the metamaterial. The resulting analytic expressions account for the effects of spatial dispersion and losses. This article also details how the process may be expanded to similarly describe the temperature-dependent constitutive properties of metamaterial magnetic resonators. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC devices KW - TEMPERATURE effect KW - RESONATORS KW - METAMATERIALS KW - PERMITTIVITY KW - PERMEABILITY KW - SOUND -- Equipment & supplies KW - composite structure KW - effective medium KW - electromagnetic KW - metamaterial KW - multifunctional KW - temperature-dependence N1 - Accession Number: 73984819; Arritt, Brandon J 1; Smith, David R. 2; Khraishi, Tariq A 3; Affiliations: 1: Air Force Research Laboratory, Kirtland AFB, NM, USA; 2: Center for Metamaterials and Integrated Plasmonics, Department of Electrical and Computer Engineering, Duke University, Durham, NC, USA; 3: Mechanical Engineering Department, University of New Mexico, Albuquerque, NM, USA; Issue Info: 3/1/2012, Vol. 23 Issue 4, p463; Subject Term: ELECTROMAGNETIC devices; Subject Term: TEMPERATURE effect; Subject Term: RESONATORS; Subject Term: METAMATERIALS; Subject Term: PERMITTIVITY; Subject Term: PERMEABILITY; Subject Term: SOUND -- Equipment & supplies; Author-Supplied Keyword: composite structure; Author-Supplied Keyword: effective medium; Author-Supplied Keyword: electromagnetic; Author-Supplied Keyword: metamaterial; Author-Supplied Keyword: multifunctional; Author-Supplied Keyword: temperature-dependence; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; Number of Pages: 9p; Document Type: Article; Full Text Word Count: 4281 L3 - 10.1177/1045389X11433496 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=73984819&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Head, William P. T1 - MAYAGUEZ: THE FINAL TRAGEDY OF THE U.S. INVOLVEMENT IN THE VIETNAM WAR. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 2012///Spring2012 VL - 29 IS - 1 M3 - Article SP - 57 EP - 80 SN - 87553449 AB - The article discusses an incident in the Vietnam War involving the container ship known as the SS "Mayaguez" in 1975. The article relates the details of a group of former U.S. Navy swift boats operated by Cambodian communists with the Khmer Rouge approaching the "Mayaguez" on May 12, 1975, 60 miles south of Cambodia. The article states that the Cambodians fired rocket-propelled grenades (RPGs) at the "Mayaguez." The article discusses the response to the incident by then-U.S. president Gerald R. Ford, the U.S. National Security Council (NSC), and the difficulties in deciding for a military engagement. The article also describes U.S. diplomatic responses to the incident, specifically by then-U.S. secretary of state Henry Kissinger, and the U.S. military response by the U.S. Marines. KW - MAYAGUEZ Incident, 1975 KW - VIETNAM War, 1961-1975 -- Campaigns -- Cambodia KW - CAMBODIA -- History -- 1975-1979 KW - UNITED States -- Foreign relations -- 1974-1977 KW - CAMBODIA KW - UNITED States KW - PARTI communiste du Kampuchea N1 - Accession Number: 79790237; Head, William P. 1,2; Email Address: william.head@robins.af.mil; Affiliations: 1 : United States Air Force, Area of Specialization: U.S. Military History/U.S. Foreign Relations, East and Southeast Asia; 2 : Chief, Office of History WR-ALC, 111 Robins Parkway, Robins AFB, GA 31098-2423; Source Info: Spring2012, Vol. 29 Issue 1, p57; Historical Period: 1975; Subject Term: MAYAGUEZ Incident, 1975; Subject Term: VIETNAM War, 1961-1975 -- Campaigns -- Cambodia; Subject Term: CAMBODIA -- History -- 1975-1979; Subject Term: UNITED States -- Foreign relations -- 1974-1977; Subject: CAMBODIA; Subject: UNITED States; Number of Pages: 24p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hia&AN=79790237&site=ehost-live&scope=site DP - EBSCOhost DB - hia ER - TY - JOUR AU - VanLandingham, Rachel E.1 T1 - THE STARS ALIGNED: THE LEGALITY, LEGITIMACY, AND LEGACY OF 2011'S HUMANITARIAN INTERVENTION IN LIBYA. JO - Valparaiso University Law Review JF - Valparaiso University Law Review J1 - Valparaiso University Law Review PY - 2012///Spring2012 Y1 - 2012///Spring2012 VL - 46 IS - 3 CP - 3 M3 - Article SP - 859 EP - 890 SN - 00422363 KW - Organizational legitimacy KW - Humanitarian law KW - Self-defense (Law) KW - Intervention (International law) KW - Human rights KW - Libyan Conflict, 2011- KW - United Nations. Security Council -- Resolutions N1 - Accession Number: 79819222; Authors:VanLandingham, Rachel E. 1; Affiliations: 1: Department of Law, United States Air Force Academy; Subject: United Nations. Security Council -- Resolutions; Subject: Libyan Conflict, 2011-; Subject: Organizational legitimacy; Subject: Humanitarian law; Subject: Self-defense (Law); Subject: Intervention (International law); Subject: Human rights; Subject: Libya; Number of Pages: 32p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=79819222&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR ID - 2012-24456-002 AN - 2012-24456-002 AU - Gunzelmann, Glenn AU - Gluck, Kevin A. AU - Moore, L. Richard Jr. AU - Dinges, David F. T1 - Diminished access to declarative knowledge with sleep deprivation. JF - Cognitive Systems Research JO - Cognitive Systems Research JA - Cogn Syst Res Y1 - 2012/03// VL - 13 IS - 1 SP - 1 EP - 11 CY - Netherlands PB - Elsevier Science SN - 2214-4366 SN - 1389-0417 AD - Gunzelmann, Glenn, Air Force Research Laboratory, (711 HPW/RHAC), 6030 South Kent St., Mesa, AZ, US, 85212 N1 - Accession Number: 2012-24456-002. Partial author list: First Author & Affiliation: Gunzelmann, Glenn; Air Force Research Laboratory, Cognitive Models and Agents Branch, Mesa, AZ, US. Release Date: 20121112. Correction Date: 20160407. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Conference Information: Annual Meeting of the Cognitive Science Society, 29th. Conference Note: An earlier version of the model was presented at the aforementioned conference. Major Descriptor: Cognition; Cognitive Processes; Declarative Knowledge; Fatigue; Sleep Deprivation. Minor Descriptor: Cognitive Ability. Classification: Cognitive Processes (2340). Population: Human (10); Male (30). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: Walter Reed Serial Addition/Subtraction Task. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 11. Issue Publication Date: Mar, 2012. Publication History: First Posted Date: Oct 1, 2010; Accepted Date: Sep 5, 2010; Revised Date: Jul 27, 2010; First Submitted Date: Dec 28, 2009. AB - Inadequate sleep affects cognitive functioning, with often subtle and occasionally catastrophic personal and societal consequences. Unfortunately, this topic has received little attention in the cognitive modeling literature, despite the potential payoff. In this paper, we provide evidence regarding the impact of sleep deprivation on a particular component of cognitive performance, the ability to access and use declarative knowledge. Every 2 h throughout an extended period of sleep deprivation, participants completed 50 trials of a serial addition/subtraction task requiring knowledge of single-digit arithmetic facts. Over the course of 88 h awake, response times increased while accuracy declined. A computational model accounts for the degradation in performance through a reduction in the activation of declarative knowledge. This knowledge is required for successful completion of the serial addition/subtraction task, but access to the declarative knowledge is impaired as sleep deprivation increases and alertness declines. Importantly, the mechanism provides a generalizable quantitative account relevant to other tasks and contexts. It also provides a process-level understanding of how cognitive performance declines with increasing levels of sleep loss. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - declarative knowledge KW - sleep deprivation KW - cognition KW - cognitive processes KW - cognitive performance KW - fatigue KW - 2012 KW - Cognition KW - Cognitive Processes KW - Declarative Knowledge KW - Fatigue KW - Sleep Deprivation KW - Cognitive Ability KW - 2012 U1 - Sponsor: Air Force Research Laboratory (AFRL), Warfighter Readiness Research Division, US. Recipients: No recipient indicated U1 - Sponsor: Air Force Office of Scientific Research (AFOSR), US. Grant: 07HE01COR, F49620-00-1-0266, FA9550-05-1-0293. Recipients: No recipient indicated U1 - Sponsor: National Space Biomedical Research Institute, US. Other Details: Through NASA NCC 9-58.. Recipients: No recipient indicated DO - 10.1016/j.cogsys.2010.09.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-24456-002&site=ehost-live&scope=site UR - glenn.gunzelmann@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2013-30972-005 AN - 2013-30972-005 AU - Lopez, Nadia AU - Previc, Fred H. AU - Fischer, Joseph AU - Heitz, Richard P. AU - Engle, Randall W. T1 - Effects of sleep deprivation on cognitive performance by United States Air Force pilots. JF - Journal of Applied Research in Memory and Cognition JO - Journal of Applied Research in Memory and Cognition JA - J Appl Res Mem Cogn Y1 - 2012/03// VL - 1 IS - 1 SP - 27 EP - 33 CY - Netherlands PB - Elsevier Science SN - 2211-3681 AD - Engle, Randall W., School of Psychology, Georgia Institute of Technology, 654 Cherry Street, Atlanta, GA, US, 30332-0170 N1 - Accession Number: 2013-30972-005. Partial author list: First Author & Affiliation: Lopez, Nadia; Air Force Research Laboratory, Biodynamics and Protection Division, TX, US. Release Date: 20130909. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Aircraft Pilots; Cognitive Processes; Flight Simulation. Minor Descriptor: Sleep Deprivation. Classification: Cognitive Processes (2340); Transportation (4090). Population: Human (10); Male (30). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Multi Attribute Task Battery; Operation Span Task; Psychomotor Vigilance Test-192; Flight Performance Test. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 7. Issue Publication Date: Mar, 2012. Publication History: First Posted Date: Oct 19, 2011; Accepted Date: Oct 11, 2011; Revised Date: Oct 6, 2011; First Submitted Date: Jul 25, 2011. Copyright Statement: Published by Elsevier Inc. All rights reserved. Society for Applied Research in Memory and Cognition. 2011. AB - This study examined the effects of 35 h of continuous sleep deprivation on performance in a variety of cognitive tasks as well as simulated flight. Ten United States Air Force pilots completed the Multi-Attribute Task Battery (MATB), Psychomotor Vigilance Task (PVT), and Operation Span Task (OSPAN), as well as simulated flight at 3 h intervals over a 35 h sleep deprivation period. Performance declined on all tests after about 18–20 h of continuous sleep deprivation, although the degree to which performance degraded varied. During the second half of the sleep deprivation period, performance on the simulated flight was predicted by PVT and OSPAN reasonably well but much less so by the MATB. Variance from optimal flight performance was predicted by both PVT and OSPAN but each measure added incremental validity to the prediction. The two measures together accounted for 58% of the variance in flight performance in the second half of the sleep deprivation period. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - sleep deprivation KW - cognitive performance KW - air force pilots KW - flight simulation KW - 2012 KW - Air Force Personnel KW - Aircraft Pilots KW - Cognitive Processes KW - Flight Simulation KW - Sleep Deprivation KW - 2012 U1 - Sponsor: Air Force Research Laboratory. Recipients: No recipient indicated DO - 10.1016/j.jarmac.2011.10.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-30972-005&site=ehost-live&scope=site UR - randall.engle@gatech.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-09443-008 AN - 2012-09443-008 AU - Slep, Amy M. Smith AU - Heyman, Richard E. AU - Snarr, Jeffery D. AU - Fosterb, Rachel E. AU - Linkh, David J. AU - Whitworth, James D. T1 - 'Child emotional aggression and abuse: Definitions and prevalence': Corrigendum. JF - Child Abuse & Neglect JO - Child Abuse & Neglect JA - Child Abuse Negl Y1 - 2012/03// VL - 36 IS - 3 SP - 268 EP - 268 CY - Netherlands PB - Elsevier Science SN - 0145-2134 N1 - Accession Number: 2012-09443-008. Partial author list: First Author & Affiliation: Slep, Amy M. Smith; Department of Psychology, Stony Brook University, Stony Brook, NY, US. Release Date: 20120514. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Erratum/Correction. Language: English. Major Descriptor: Aggressive Behavior; Child Abuse; Emotional Abuse; Epidemiology; Terminology. Minor Descriptor: Parents. Classification: Behavior Disorders & Antisocial Behavior (3230). Population: Human (10). Page Count: 1. Issue Publication Date: Mar, 2012. AB - Reports an error in 'Child emotional aggression and abuse: Definitions and prevalence' by Amy M. Smith Slep, Richard E. Heyman and Jeffery D. Snarr (Child Abuse & Neglect, 2011[Oct], Vol 35[10], 783-796). The authorship for this paper should be as follows: Amy M. Smith Slepa, Richard E. Heymana, Jeffery D. Snarra, Rachel E. Fosterb, David J. Linkhb, James D. Whitworthb. aDepartment of Psychology, Stony Brook University, Stony Brook, NY 11794-2500, USA bUnited States Air Force Family Advocacy Program¹, Lackland-Kelly Air Force Base, San Antonio, TX, USA. (The following abstract of the original article appeared in record [rid]2011-25840-004[/rid]). Objective: Research on and intervention for child emotional abuse and emotional aggression toward children have been severely hampered because there have been no agreed-upon, clinically usable definitions. Methods: We have (a) proposed and field-tested a set of criteria to operationally define child emotional abuse for clinical settings and (b) used these criteria to design a parent-report measure of parental emotional aggression and child emotional abuse that could be used in research. In this paper, we review the development and field trials of these criteria for making substantiation decisions. Results: Agreement between master reviewers and field decisions was extremely high in a 5-site development trial (96% agreement, κ = .89) and a 41-site dissemination trial (90% agreement, κ = .73). We compare these criteria to other research criteria in the literature. We then present data collected using a self-report measure designed to parallel these criteria from an anonymous online survey of US Air Force personnel and their spouses. The final sample (N = 52,780) was weighted to be representative of the United States civilian population. The prevalence of parents’ emotionally aggressive acts was much higher than the prevalence of emotional abuse (acts plus impact), but rates of parents’ acts of emotional aggression were lower than those typically reported in the literature. Additional analyses tested for differential effects due to gender of perpetrator (i.e., mothers or fathers), age of victim, and clustering within families. These factors did not drive rates of aggression or abuse. Conclusions: In sum, the criteria developed and proposed appear to support reliable clinical decision making regarding child emotional abuse and can be translated to research survey tools that better capture the continuum of parents’ emotional aggression and child emotional abuse than the measures that are currently available, advancing the state of the science with respect to child emotional abuse. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - emotional abuse KW - emotional aggression KW - child abuse KW - prevalence KW - definitions KW - criteria KW - parents KW - 2012 KW - Aggressive Behavior KW - Child Abuse KW - Emotional Abuse KW - Epidemiology KW - Terminology KW - Parents KW - 2012 DO - 10.1016/j.chiabu.2011.11.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-09443-008&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-22048-016 AN - 2012-22048-016 AU - Wilson, Candy T1 - Caring for military women and families as a nation at war. JF - Journal of Obstetric, Gynecologic, & Neonatal Nursing: Clinical Scholarship for the Care of Women, Childbearing Families, & Newborns JO - Journal of Obstetric, Gynecologic, & Neonatal Nursing: Clinical Scholarship for the Care of Women, Childbearing Families, & Newborns JA - J Obstet Gynecol Neonatal Nurs Y1 - 2012/03//Mar-Apr, 2012 VL - 41 IS - 2 SP - 281 EP - 282 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0884-2175 SN - 1552-6909 AD - Wilson, Candy, Lackland AFB, 59 Medical Wing, San Antonio, TX, US, 78236 N1 - Accession Number: 2012-22048-016. PMID: 22834850 Partial author list: First Author & Affiliation: Wilson, Candy; United States Air Force, San Antonio, TX, US. Other Publishers: Blackwell Publishing; Elsevier Science. Release Date: 20121112. Correction Date: 20160229. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Editorial. Language: English. Major Descriptor: Family; Health Care Services; Military Deployment; Military Personnel; War. Minor Descriptor: Human Females. Classification: Health & Mental Health Treatment & Prevention (3300); Military Psychology (3800). Population: Human (10); Female (40). Age Group: Adulthood (18 yrs & older) (300). Page Count: 2. Issue Publication Date: Mar-Apr, 2012. Copyright Statement: AWHONN, the Association of Women’s Health, Obstetric and Neonatal Nurses. 2012. AB - The United States has been at war for more than 10 years. The majority of today’s U.S. military members joined the military after the attack on September 11, 2001. A military with an active war mission requires dangerous, prolonged, and repeated deployments. The authors in this In Focus series are female military nurses who have served in foreign lands, and my colleagues and I understand the health needs of deployed military women firsthand. The articles in this series highlight two common issues: gynecologic care for deployed women and obstetric care for military wives or military women. The research continues to overwhelmingly demonstrate that the role of military families and their extended families is critical to military effectiveness. A body of evidence is growing that supports the need for care of military personal and their families during times of preparation for separation, during separation, and reintegration from deployment. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - health care KW - military women KW - families KW - war KW - deployment KW - 2012 KW - Family KW - Health Care Services KW - Military Deployment KW - Military Personnel KW - War KW - Human Females KW - 2012 DO - 10.1111/j.1552-6909.2011.01344.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-22048-016&site=ehost-live&scope=site UR - candy.wilson@lackland.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-07223-017 AN - 2012-07223-017 AU - Lyon, Don R. AU - Gunzelmann, Glenn M. T1 - 'Functional equivalence and spatial path memory': Erratum. JF - The Quarterly Journal of Experimental Psychology JO - The Quarterly Journal of Experimental Psychology JA - Q J Exp Psychol (Hove) Y1 - 2012/03// VL - 65 IS - 3 SP - 613 EP - 613 CY - United Kingdom PB - Taylor & Francis SN - 1747-0218 SN - 1747-0226 N1 - Accession Number: 2012-07223-017. Other Journal Title: The Quarterly Journal of Experimental Psychology A: Human Experimental Psychology; The Quarterly Journal of Experimental Psychology B: Comparative and Physiological Psychology. Partial author list: First Author & Affiliation: Lyon, Don R.; L3 Communications, Air Force Research Laboratory, Mesa, AZ, US. Release Date: 20120430. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Erratum/Correction. Language: English. Major Descriptor: Cognitive Processes; Spatial Memory; Spatial Perception. Classification: Learning & Memory (2343). Population: Human (10). Page Count: 1. Issue Publication Date: Mar, 2012. AB - Reports an error in 'Functional equivalence and spatial path memory' by Don R. Lyon and Glenn M. Gunzelmann (The Quarterly Journal of Experimental Psychology, 2011[Nov], Vol 64[11], 2081-2087). The publisher, Psychology Press, would like to apologize to the authors and to the readers for this error. The correct article with all corrections has now been published online and can be found here. Please note the online version now differs from the print version. Don R. Lyon¹ and Glenn M. Gunzelmann² ¹L3 Communications at Air Force Research Laboratory, Mesa, AZ, USA. ²Cognitive Models and Agents Branch, Air Force Research Laboratory, Wright Patterson AFB, OH, USA. Correspondence should be addressed to Don R. Lyon, L3 Communications, 6030 South Kent Street, Mesa, AZ, 85212–6061, USA. E-mail: don.lyon@l-3com.com. (The following abstract of the original article appeared in record [rid]2011-25747-001[/rid]). Loomis, Klatzky, Avraamides, Lippa and Golledge (2007) suggest that, when it comes to spatial information, verbal description and perceptual experience are nearly functionally equivalent with respect to the cognitive representations they produce. We tested this idea for the case of spatial memory for complex paths. Paths consisted entirely of unit-length segments followed by 90-degree turns, thus assuring that a path could be described with equal precision using either an egocentric verbal description or a virtual self-motion experience. The verbal description was analogous to driving directions (e.g., turn left and go one block, then turn right, etc.) except in three dimensions (allowing rotation followed by up or down movement). Virtual self-motion was depicted as first-person travel through a 3D grid of featureless corridors. Comparison of these two conditions produced a result that may be surprising to some, but nevertheless appears to support the notion of functional equivalence: Virtual self-motion does not produce better path memory than verbal description, when care is taken to present equally precise path information. This result holds for even very complex paths and despite evidence from proximity-based interference that the memory representation of the path is spatial. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - functional equivalence KW - spatial path memory KW - cognitive representations KW - 2012 KW - Cognitive Processes KW - Spatial Memory KW - Spatial Perception KW - 2012 DO - 10.1080/17470218.2012.668370 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-07223-017&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Stuckey, N.C. AU - Vasquez, J.R. AU - Graham, S.R. AU - Hopkinson, K.M. AU - Maybeck, P.S. T1 - Stochastic control of computer networks. JO - IET Control Theory & Applications JF - IET Control Theory & Applications Y1 - 2012/02/16/ VL - 6 IS - 3 M3 - Article SP - 403 EP - 411 SN - 17518644 AB - Although transmission control protocol (TCP) is a proven protocol in networks with congestion-dominated packet losses, it is a poor match for mobile networks with bit-error-dominated packet losses. This article considers a control theoretic approach for more effective flow control in reliable network transmissions. An extended Kalman filter is developed to estimate two key network state indicators: individual queue sizes and packet arrival rates to each queue. A source node estimates these parameters for each of the downstream queues currently servicing packet streams originating from itself. These estimates can be used by an linear quadratic Gaussian (LQG) 'steady-state' linear perturbation proportional-plus-integral (PI) controller to regulate the size of downstream queues by altering the packet rate sent towards a particular downstream queue. Although this work demonstrates the effects of a single controller, it is anticipated that a network wide deployment could achieve significant throughput and stability benefits. The primary contributions of this work include: (a) development of the necessary Kalman filter theory, (b) design of a network state estimator using a transient queue behaviour model, (c) equations for the LQG synthesis of a steady-state linear perturbation PI controller and (d) demonstration of the resulting controller performance, which shows significant improvement over traditional TCP implementations. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Control Theory & Applications is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER networks KW - TCP/IP (Computer network protocol) KW - STOCHASTIC control theory KW - INTERNET traffic KW - DATA packets & packeting KW - BIT error rate KW - PID controllers KW - H2 control N1 - Accession Number: 72017265; Stuckey, N.C. 1; Vasquez, J.R. 2; Graham, S.R. 3; Hopkinson, K.M. 3; Maybeck, P.S. 3; Affiliations: 1: White House Communications Agency, Joint Base Anacostia-Bolling, USA; 2: Air Force Research Laboratory, Wright-Patterson AFB, USA; 3: Air Force Institute of Technology, Wright-Patterson AFB, USA; Issue Info: 2/16/2012, Vol. 6 Issue 3, p403; Thesaurus Term: COMPUTER networks; Thesaurus Term: TCP/IP (Computer network protocol); Subject Term: STOCHASTIC control theory; Subject Term: INTERNET traffic; Subject Term: DATA packets & packeting; Subject Term: BIT error rate; Subject Term: PID controllers; Subject Term: H2 control; NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; Number of Pages: 9p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1049/iet-cta.2010.0432 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=72017265&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Costantine, Joseph AU - Tawk, Youssef AU - Christodoulou, Christos G. AU - Lyke, James C. AU - De Flaviis, Franco AU - Grau Besoli, Alfred AU - Barbin, Silvio E. T1 - Analyzing the Complexity and Reliability of Switch-Frequency-Reconfigurable Antennas Using Graph Models. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2012/02/15/Feb2012 Part 2 Part 2 Y1 - 2012/02/15/Feb2012 Part 2 Part 2 VL - 60 IS - 2 M3 - Article SP - 811 EP - 820 SN - 0018926X AB - This paper addresses the functional reliability and the complexity of reconfigurable antennas using graph models. The correlation between complexity and reliability for any given reconfigurable antenna is defined. Two methods are proposed to reduce failures and improve the reliability of reconfigurable antennas. The failures are caused by the reconfiguration technique or by the surrounding environment. These failure reduction methods proposed are tested and examples are given which verify these methods. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNAS (Electronics) -- Design & construction KW - RADIO frequency microelectromechanical systems KW - GRAPH theory KW - RELIABILITY (Engineering) KW - REDUNDANCY (Engineering) N1 - Accession Number: 71539969; Source Information: Feb2012 Part 2 Part 2, Vol. 60 Issue 2, p811; Subject Term: ANTENNAS (Electronics) -- Design & construction; Subject Term: RADIO frequency microelectromechanical systems; Subject Term: GRAPH theory; Subject Term: RELIABILITY (Engineering); Subject Term: REDUNDANCY (Engineering); Subject Term: ; Number of Pages: 10p; ; Document Type: Article; L3 - 10.1109/TAP.2011.2173104 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=71539969&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Tawk, Youssef AU - Costantine, Joseph AU - Hemmady, Sameer AU - Balakrishnan, Ganesh AU - Avery, Keith AU - Christodoulou, Christos G. T1 - Demonstration of a Cognitive Radio Front End Using an Optically Pumped Reconfigurable Antenna System (OPRAS). JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2012/02/15/Feb2012 Part 2 Part 2 Y1 - 2012/02/15/Feb2012 Part 2 Part 2 VL - 60 IS - 2 M3 - Article SP - 1075 EP - 1083 SN - 0018926X AB - A cognitive radio front end using an optically pumped reconfigurable antenna system (OPRAS) is investigated. The scheme consists of a ultrawidebhand antenna and a reconfigurable narrowband antenna in close proximity to one another. The narrowband reconfigurability is achieved by a integratinglaser diodes within the antenna structure to control the switching state of photoconductive silicon switches. This scheme has the advantage of eliminating the use of optical fiber cables to guide light to the switches, and enables easier integration of the reconfigurable antenna in a complete communication system. The performance of the proposed technique is presented, and comparisons are made to other commonly used switching techniques for reconfigurable antennas, such as techniques based on PIN diodes and RF microlectromechanical systems integration. The application of this antenna design scheme serving as the receive channel in a cognitive radio communication link is also demonstrated. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOFTWARE radio KW - ADAPTIVE antennas -- Design & construction KW - OPTICAL pumping KW - ULTRA-wideband antennas KW - LASERS N1 - Accession Number: 71540013; Source Information: Feb2012 Part 2 Part 2, Vol. 60 Issue 2, p1075; Subject Term: SOFTWARE radio; Subject Term: ADAPTIVE antennas -- Design & construction; Subject Term: OPTICAL pumping; Subject Term: ULTRA-wideband antennas; Subject Term: LASERS; Subject Term: ; Number of Pages: 9p; ; Document Type: Article; L3 - 10.1109/TAP.2011.2173139 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=71540013&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Parasuraman, Raja AU - Baldwin, Carryl L. AU - Knott, Benjamin AU - Warm, Joel S. AU - Finomore, Victor AU - Boehm-Davis, Deborah AU - Galster, Scott M. T1 - Symposium: Neuroergonomics, technology, and cognition. JO - Work JF - Work Y1 - 2012/02/02/2012 Supplement VL - 41 M3 - Article SP - 5167 EP - 5171 PB - IOS Press SN - 10519815 AB - This symposium describes collaborative research on neuroergonomics, technology, and cognition being conducted at George Mason University and the US Air Force Research Laboratory (AFRL) as part of the Center of Excellence in Neuroergonomics, Technology, and Cognition (CENTEC). Six presentations describe the latest developments in neuroergonomics research conducted by CENTEC scientists. The individual papers cover studies of: (1) adaptive learning systems; (2) neurobehavioral synchronicity during team performance; (3) genetics and individual differences in decision making; (4) vigilance and mindlessness; (5) interruptions and multi-tasking; and (6) development of a simulation capability that integrates measures across these domains and levels of analysis. [ABSTRACT FROM AUTHOR] AB - Copyright of Work is the property of IOS Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Technology KW - Cognition KW - Conferences & conventions KW - Ergonomics KW - Nervous system -- Radiography KW - Neurosciences KW - cognition KW - Neuroergonomics KW - technology N1 - Accession Number: 71928965; Parasuraman, Raja 1; Baldwin, Carryl L. 1; Knott, Benjamin 2; Warm, Joel S. 2; Finomore, Victor 2; Boehm-Davis, Deborah 1; Galster, Scott M. 2; Affiliations: 1: Department of Psychology, George Mason University, 4400 University Drive, Fairfax, VA 22030, USA; 2: Air Force Research Laboratory, 711 Human Performance Wing, Wright-Patterson AFB OH 45433, USA; Issue Info: 2012 Supplement, Vol. 41, p5167; Thesaurus Term: Technology; Subject Term: Cognition; Subject Term: Conferences & conventions; Subject Term: Ergonomics; Subject Term: Nervous system -- Radiography; Subject Term: Neurosciences; Author-Supplied Keyword: cognition; Author-Supplied Keyword: Neuroergonomics; Author-Supplied Keyword: technology; NAICS/Industry Codes: 561920 Convention and Trade Show Organizers; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=71928965&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 104523330 T1 - Symposium: Neuroergonomics, technology, and cognition. AU - Soares, Marcelo M. AU - Jacobs, Karen AU - Parasuraman, Raja AU - Baldwin, Carryl L. AU - Knott, Benjamin AU - Warm, Joel S. AU - Finomore, Victor AU - Boehm-Davis, Deborah AU - Galster, Scott M. Y1 - 2012/02/02/2012 Supplement N1 - Accession Number: 104523330. Language: English. Entry Date: 20120327. Revision Date: 20150819. Publication Type: Journal Article. Supplement Title: 2012 Supplement. Journal Subset: Allied Health; Europe; Peer Reviewed; UK & Ireland. Special Interest: Occupational Therapy. NLM UID: 9204382. KW - Ergonomics KW - Technology KW - Cognition KW - Congresses and Conferences KW - Neuroradiography KW - Neurosciences KW - Human SP - 5167 EP - 5171 JO - Work JF - Work JA - WORK VL - 41 PB - IOS Press AB - This symposium describes collaborative research on neuroergonomics, technology, and cognition being conducted at George Mason University and the US Air Force Research Laboratory (AFRL) as part of the Center of Excellence in Neuroergonomics, Technology, and Cognition (CENTEC). Six presentations describe the latest developments in neuroergonomics research conducted by CENTEC scientists. The individual papers cover studies of: (1) adaptive learning systems; (2) neurobehavioral synchronicity during team performance; (3) genetics and individual differences in decision making; (4) vigilance and mindlessness; (5) interruptions and multi-tasking; and (6) development of a simulation capability that integrates measures across these domains and levels of analysis. SN - 1051-9815 AD - Department of Psychology, George Mason University, 4400 University Drive, Fairfax, VA 22030, USA AD - Air Force Research Laboratory, 711 Human Performance Wing, Wright-Patterson AFB OH 45433, USA UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104523330&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Brown, Ashland1 AU - Jensen, Daniel2 AU - Rencis, Joseph3 AU - Wood, Kristin4 AU - Wood, John2 AU - White, Christina4 AU - Raaberg, Kristen Kaufman4 AU - Coffman, Josh3 T1 - Finite Element Learning Modules as Active Learning Tools. JO - Advances in Engineering Education JF - Advances in Engineering Education J1 - Advances in Engineering Education PY - 2012///Winter2012 Y1 - 2012///Winter2012 VL - 3 IS - 1 CP - 1 M3 - Article SP - 1 EP - 29 SN - 19411766 AB - The purpose of active learning is to solicit participation by students beyond the passive mode of traditional classroom lectures. Reading, writing, participating in discussions, hands-on activities, engaging in active problem solving, and collaborative learning can all be involved. The skills acquired during active learning tend to go above and beyond basic comprehension of information covered during a lecture. In fact, the goal of active learning is to not only enable student comprehension, but also to assist the student in cultivating valuable aptitudes for synthesizing, analyzing, and evaluating ideas and their learning potential. This captures a significantly larger portion of the Bloom's Taxonomy than would be available in a lecture-only situation. One model for active learning takes the form of tutorials, or more accurately described as active learning modules (ALMs), aimed at improving student learning in historically difficult subject areas in engineering through the application of finite element analysis. The tutorial set developed here includes learning modules for various subject areas in Mechanical, Electrical, and Biomedical Engineering courses. The aim of this study is to determine if ALMs of this type are, in fact, effective active learning tools. In each participating course, after the student completes their traditional lecture series, they are introduced to a computer-based ALM. In order to perform a baseline study, students are administered content quizzes before and after the completion of the module. These quiz results are statistically analyzed to determine if subject aptitude, including comprehension, is improved. The incorporation of a novel assessment methodology reinforces the project goals as we are able to judge if these modules afford all students with an equal active learning process experience. The ALMs are shown to be a successful step towards improving aptitude and comprehension of challenging engineering content in an active learning environment. [ABSTRACT FROM AUTHOR] KW - Active learning KW - Lecture method in teaching KW - Education KW - Aptitude-treatment interaction (Education) KW - Tutors & tutoring KW - Finite element method N1 - Accession Number: 76131360; Authors:Brown, Ashland 1; Jensen, Daniel 2; Rencis, Joseph 3; Wood, Kristin 4; Wood, John 2; White, Christina 4; Raaberg, Kristen Kaufman 4; Coffman, Josh 3; Affiliations: 1: University of the Pacific, Stockton, CA; 2: US Air Force Academy, Colorado Springs, CO; 3: University of Arkansas, Fayetteville, AK; 4: University of Texas, Austin, Texas; Subject: Active learning; Subject: Finite element method; Subject: Lecture method in teaching; Subject: Education; Subject: Aptitude-treatment interaction (Education); Subject: Tutors & tutoring; Number of Pages: 29p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=76131360&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR AU - Dube, T. AU - Raines, R. AU - Peterson, G. AU - Bauer, K. AU - Grimaila, M. AU - Rogers, S. T1 - Malware target recognition via static heuristics JO - Computers & Security JF - Computers & Security Y1 - 2012/02// VL - 31 IS - 1 M3 - Article SP - 137 EP - 147 SN - 01674048 AB - Abstract: Organizations increasingly rely on the confidentiality, integrity and availability of their information and communications technologies to conduct effective business operations while maintaining their competitive edge. Exploitation of these networks via the introduction of undetected malware ultimately degrades their competitive edge, while taking advantage of limited network visibility and the high cost of analyzing massive numbers of programs. This article introduces the novel Malware Target Recognition (MaTR) system which combines the decision tree machine learning algorithm with static heuristic features for malware detection. By focusing on contextually important static heuristic features, this research demonstrates superior detection results. Experimental results on large sample datasets demonstrate near ideal malware detection performance (99.9+% accuracy) with low false positive (8.73e-4) and false negative rates (8.03e-4) at the same point on the performance curve. Test results against a set of publicly unknown malware, including potential advanced competitor tools, show MaTR’s superior detection rate (99%) versus the union of detections from three commercial antivirus products (60%). The resulting model is a fine granularity sensor with potential to dramatically augment cyberspace situation awareness. [Copyright &y& Elsevier] AB - Copyright of Computers & Security is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MALWARE (Computer software) KW - COMPUTER networks KW - MATHEMATICAL models KW - COMPUTER security KW - HEURISTIC algorithms KW - DEMODULATION (Electronics) KW - INTERNET security KW - MACHINE learning KW - Intrusion detection KW - Machine learning KW - Malware KW - Malware detection KW - Situation awareness N1 - Accession Number: 70949468; Dube, T. 1; Email Address: thomas.dube@afit.edu; Raines, R. 1; Peterson, G. 1; Bauer, K. 1; Grimaila, M. 1; Rogers, S. 2; Affiliations: 1: Air Force Institute of Technology, Wright-Patterson AFB, OH 45433-7765, USA; 2: Sensors and Information Directorates, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7321, USA; Issue Info: Feb2012, Vol. 31 Issue 1, p137; Thesaurus Term: MALWARE (Computer software); Thesaurus Term: COMPUTER networks; Thesaurus Term: MATHEMATICAL models; Thesaurus Term: COMPUTER security; Subject Term: HEURISTIC algorithms; Subject Term: DEMODULATION (Electronics); Subject Term: INTERNET security; Subject Term: MACHINE learning; Author-Supplied Keyword: Intrusion detection; Author-Supplied Keyword: Machine learning; Author-Supplied Keyword: Malware; Author-Supplied Keyword: Malware detection; Author-Supplied Keyword: Situation awareness; NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.cose.2011.09.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=70949468&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 104534909 T1 - Conceptualization and measurement of team workload: a critical need. AU - Funke GJ AU - Knott BA AU - Salas E AU - Pavlas D AU - Strang AJ AU - Funke, Gregory J AU - Knott, Benjamin A AU - Salas, Eduardo AU - Pavlas, Davin AU - Strang, Adam J Y1 - 2012/02// N1 - Accession Number: 104534909. Language: English. Entry Date: 20120427. Revision Date: 20170228. Publication Type: journal article; research. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. NLM UID: 0374660. KW - Cognition KW - Work -- Physiology KW - Work -- Psychosocial Factors KW - Workload KW - Concept Formation KW - Human KW - Interprofessional Relations KW - Management KW - Psychomotor Performance KW - Questionnaires KW - Task Performance and Analysis SP - 36 EP - 51 JO - Human Factors JF - Human Factors JA - HUM FACTORS VL - 54 IS - 1 PB - Sage Publications Inc. AB - Objective: The purpose of this article is to present and expand on current theories and measurement techniques for assessing team workload.Background: To date, little research has been conducted on the workload experienced by teams. A validated theory describing team workload, which includes an account of its relation to individual workload, has not been articulated.Method: The authors review several theoretical approaches to team workload.Within the team research literature, attempts to evaluate team workload have typically relied on measures of individual workload. This assumes that such measures retain their validity at the team level of measurement, but empirical research suggests that this method may lack sensitivity to the drivers of team workload.Results: On the basis of these reviews, the authors advance suggestions concerning a comprehensive theory of team workload and methods for assessing it in team settings. The approaches reviewed include subjective, performance, physiological, and strategy shift measures. Theoretical and statistical difficulties associated with aggregating individual-level workload responses to a team-level measure are discussed.Conclusion: Conception and measurement of team workload have not significantly matured alongside developments in individual workload.Application: Team workload remains a complex research area without simple measurement solutions, but as a research domain it remains open for contributions from interested and enterprising researchers. SN - 0018-7208 AD - Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7951, USA AD - Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7951, USA. Gregory.Funke@wpafb.af.mil U2 - PMID: 22409101. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104534909&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - CONF AU - Cho, Mengu AU - Cooke, David AU - Ferguson, Dale AU - Garrett, Henry B. AU - Hilgers, Alain AU - Lai, Shu T. AU - Roussel, Jean-François AU - Wheelock, Adrian T1 - Special Issue on Spacecraft Charging Technology 2012. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2012/02//2/1/2012 Part 1 Part 1 Y1 - 2012/02//2/1/2012 Part 1 Part 1 VL - 40 IS - 2 M3 - Proceeding SP - 138 EP - 138 SN - 00933813 AB - The article offers information related to spacecraft charging technology discussed at the 11th Spacecraft Charging Technology Conference held in Albuquerque, New Mexico in September 2010. It highlights the advent of new solar cycle, new technologies for spacecraft systems and new satellites for space environment. It was organized by the U.S. Spacecraft Air Force Research Laboratory and David Cooke , Dale Ferguson and Shu T. lai were the main organizers. KW - SPACE vehicles -- Congresses KW - SPACE vehicles -- Electrostatic charging KW - SOLAR cycle KW - NATURAL satellites KW - AIR Force Research Laboratory (Edwards Air Force Base, Calif.) KW - COOKE, David KW - FERGUSON, Dale KW - ALBUQUERQUE (N.M.) N1 - Accession Number: 73616346; Source Information: 2/1/2012 Part 1 Part 1, Vol. 40 Issue 2, p138; Subject Term: SPACE vehicles -- Congresses; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: SOLAR cycle; Subject Term: NATURAL satellites; Subject Term: AIR Force Research Laboratory (Edwards Air Force Base, Calif.); Subject Term: COOKE, David; Subject Term: FERGUSON, Dale; Subject Term: ; Geographic Subject: ALBUQUERQUE (N.M.); Geographic Subject: ; Number of Pages: 1p; ; Document Type: Proceeding; L3 - 10.1109/TPS.2011.2180452 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=73616346&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ferguson, Dale C. T1 - New Frontiers in Spacecraft Charging. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2012/02//2/1/2012 Part 1 Part 1 Y1 - 2012/02//2/1/2012 Part 1 Part 1 VL - 40 IS - 2 M3 - Article SP - 139 EP - 143 SN - 00933813 AB - Spacecraft charging, as a field, is continually being recharged by new developments in understanding, new materials and technologies, and new approaches to both new and old problems. I will discuss some of the new frontiers in understanding spacecraft charging in this paper, as well as referencing relevant papers from the 11th Spacecraft Charging Technology Conference. Spacecraft charging is highly material-property dependent. For example, the secondary electron emission, photoemission, bulk electrical resistivity, and surface resistivity are important parameters that help determine the extent of spacecraft charging (both on the surface and inside the spacecraft) in any given environment. Our understanding of these material properties is one of the new frontiers in spacecraft charging. I will discuss how these fundamental material properties have been found to depend on the following: proper measurement techniques, temperature, radiation flux, electric field, surface treatment, surface contamination from plumes and outgassing, surface modification through arcing and vacuum exposure, and synergistic effects. Modeling of spacecraft charging is a second new frontier. New developments in modeling have both improved our understanding of spacecraft charging and enabled us to model situations that are dynamic and geometrically complex. New schemes for treating both space and time variations of fields, particle fluxes, and spectra have made our modeling more precise and accurate. Now, many more spacecraft are being launched into low Earth orbit and the radiation belts. Modeling charging effects more accurately in those orbits will become more important than ever. A third new frontier in spacecraft charging is novel mitigation techniques. Surface materials and simple passive devices that emit electrons as fast as they are collected seem to make real-time charge mitigation cheaply and reliably achievable for the first time. Novel solar cell configurations and coverglass materials promise to make arcing, both of the primary electrostatic discharge (ESD) type and sustained arcing between cells or strings, a thing of the past. Superconducting cables may obviate the high voltages that lead to arcing. New cooperation between spacecraft and solar array manufacturers and spacecraft charging experts may help to prevent the spacecraft charging mistakes of the past. Furthermore, the final frontier is dealing with new materials and higher power requirements. Lightweight spacecraft materials are, in some cases, prone to exacerbate charging or arcing and may allow transmission of electromagnetic interference into sensitive electronics. New solar cell active materials may increase the effects of arcing on solar cell and solar array performance, even for primary ESD events. Higher power requirements may require longer transmission cables, which may increase the need for higher voltages, making arcing more likely. If superconducting cables become a reality, magnetics may become very important for spacecraft control and stability. What will happen to a superconducting cable if it must carry the increased current in an arcing event of very short duration? [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles -- Electrostatic charging KW - PHOTOEMISSION KW - ELECTRON emission KW - ELECTRICAL resistivity KW - ELECTRIC fields KW - SURFACE preparation KW - ELECTROSTATIC discharges KW - HIGH voltages N1 - Accession Number: 73616331; Source Information: 2/1/2012 Part 1 Part 1, Vol. 40 Issue 2, p139; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: PHOTOEMISSION; Subject Term: ELECTRON emission; Subject Term: ELECTRICAL resistivity; Subject Term: ELECTRIC fields; Subject Term: SURFACE preparation; Subject Term: ELECTROSTATIC discharges; Subject Term: HIGH voltages; Subject Term: ; Number of Pages: 5p; ; Document Type: Article; L3 - 10.1109/TPS.2011.2172635 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=73616331&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Hoffmann, Ryan AU - Dennison, J. R. T1 - Measurement Methods of Electron Emission Over a Full Range of Sample Charging. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2012/02//2/1/2012 Part 1 Part 1 Y1 - 2012/02//2/1/2012 Part 1 Part 1 VL - 40 IS - 2 M3 - Article SP - 298 EP - 304 SN - 00933813 AB - Spacecraft charging codes require accurate models of electron yields as a function of accumulated charge to correctly predict the charge buildup on spacecraft. The accumulated charge creates equilibrium surface potentials on spacecraft resulting from interactions with the space plasma environment. There is, however, a complex relation between these emission properties and the charge built up in spacecraft insulators. This paper focuses on different methods appropriate to determine the fundamental electronic material property of the total electron yield as the materials accumulate charge. Three methods for determining the uncharged total yield are presented: 1) The dc continuous beam method is a relatively easy and accurate method appropriate for conductors and semiconductors with maximum total electron yield \sigma\max < 2 and resistivity \rho < 10^17 \ \Omega\cdot\cm; 2) the pulsed-yield method seeks to minimize the effects of charging and is applicable to materials with \sigma\max < 4 and \rho up to >10^24 \ \Omega\cdot\cm; and 3) the yield decay method is a very difficult and time-consuming technique that uses a combination of measurement and modeling to investigate the most difficult materials with \sigma\max > 4 and \rho up to <10^24 \ \Omega\cdot\cm. Data for high-purity polycrystalline Au, Kapton HN and CP1 polyimides, and polycrystalline aluminum oxide ceramic are presented. These data demonstrate the relative strengths and weaknesses of each method but more importantly show that the methods described herein are capable of reliably measuring the total electron yield of almost any spacecraft material. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON emission KW - SPACE vehicles -- Electrostatic charging KW - PLASMA engines KW - ELECTRONS KW - SEMICONDUCTORS KW - POLYIMIDES KW - POLYCRYSTALLINE silicon KW - ALUMINUM oxide N1 - Accession Number: 73616347; Source Information: 2/1/2012 Part 1 Part 1, Vol. 40 Issue 2, p298; Subject Term: ELECTRON emission; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: PLASMA engines; Subject Term: ELECTRONS; Subject Term: SEMICONDUCTORS; Subject Term: POLYIMIDES; Subject Term: POLYCRYSTALLINE silicon; Subject Term: ALUMINUM oxide; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TPS.2011.2178251 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=73616347&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 104514047 T1 - PTAs Today. Flying High: Building a career in the US Air Force. AU - Hardin, Richard E. Y1 - 2012/02// N1 - Accession Number: 104514047. Language: English. Entry Date: 20120220. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; USA. Special Interest: Physical Therapy. KW - Physical Therapist Assistants KW - United States Air Force KW - Physical Therapist Assistants -- Education KW - Education, Clinical KW - Clinical Competence KW - Education, Associate KW - Licensure KW - Career Planning and Development KW - Work Experiences KW - Job Experience SP - 52 EP - 54 JO - PT in Motion JF - PT in Motion JA - PT MOTION VL - 4 IS - 1 CY - Alexandria, Virginia PB - American Physical Therapy Association SN - 1949-3711 AD - Technical sergeant, United States Air Force, flight chief, surgical services, 39th Air Base Wing, Incirlik Air Base, Turkey UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104514047&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2012-01945-004 AN - 2012-01945-004 AU - Funke, Gregory J. AU - Knott, Benjamin A. AU - Salas, Eduardo AU - Pavlas, Davin AU - Strang, Adam J. T1 - Conceptualization and measurement of team workload: A critical need. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2012/02// VL - 54 IS - 1 SP - 36 EP - 51 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Funke, Gregory J., Air Force Research Laboratory, 2510 Fifth Street, Air Force Base, Wright-Patterson, OH, US, 45433-7951 N1 - Accession Number: 2012-01945-004. PMID: 22409101 Partial author list: First Author & Affiliation: Funke, Gregory J.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20120220. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Concept Formation; Group Performance; Measurement; Work Load; Work Teams. Classification: Personnel Evaluation & Job Performance (3630); Occupational & Employment Testing (2228). Population: Human (10). Tests & Measures: Task Load Index; Team Workload Awareness Questionnaire; Modified Team Task Load Index; Team Workload Assessment Scale; Team Task Load Index; Team Workload Assessment Measure; Communication, Coordination, Cooperation, Plus Command and Control Scale; Bipolar Scale. Methodology: Literature Review. References Available: Y. Page Count: 16. Issue Publication Date: Feb, 2012. Publication History: Accepted Date: Sep 13, 2011; First Submitted Date: Apr 8, 2011. Copyright Statement: Human Factors and Ergonomics Society. 2012. AB - Objective: The purpose of this article is to present and expand on current theories and measurement techniques for assessing team workload. Background: To date, little research has been conducted on the workload experienced by teams. A validated theory describing team workload, which includes an account of its relation to individual workload, has not been articulated. Method: The authors review several theoretical approaches to team workload. Within the team research literature, attempts to evaluate team workload have typically relied on measures of individual workload. This assumes that such measures retain their validity at the team level of measurement, but empirical research suggests that this method may lack sensitivity to the drivers of team workload. Results: On the basis of these reviews, the authors advance suggestions concerning a comprehensive theory of team workload and methods for assessing it in team settings. The approaches reviewed include subjective, performance, physiological, and strategy shift measures. Theoretical and statistical difficulties associated with aggregating individual-level workload responses to a team-level measure are discussed. Conclusion: Conception and measurement of team workload have not significantly matured alongside developments in individual workload. Application: Team workload remains a complex research area without simple measurement solutions, but as a research domain it remains open for contributions from interested and enterprising researchers. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - conceptualization KW - team workload KW - performance KW - measurement KW - 2012 KW - Concept Formation KW - Group Performance KW - Measurement KW - Work Load KW - Work Teams KW - 2012 DO - 10.1177/0018720811427901 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-01945-004&site=ehost-live&scope=site UR - Gregory.Funke@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-24531-002 AN - 2011-24531-002 AU - Parasuraman, Raja AU - Christensen, James AU - Grafton, Scott T1 - Neuroergonomics: The brain in action and at work. JF - NeuroImage JO - NeuroImage JA - Neuroimage Y1 - 2012/01/02/ VL - 59 IS - 1 SP - 1 EP - 3 CY - Netherlands PB - Elsevier Science SN - 1053-8119 SN - 1095-9572 AD - Parasuraman, Raja, Arch Laboratory and Department of Psychology, George Mason University, Fairfax, VA, US, 22030 N1 - Accession Number: 2011-24531-002. PMID: 21854856 Partial author list: First Author & Affiliation: Parasuraman, Raja; Arch Laboratory and Department of Psychology, George Mason University, Fairfax, VA, US. Release Date: 20111212. Correction Date: 20120618. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Editorial. Language: English. Grant Information: Parasuraman, Raja. Major Descriptor: Brain; Human Factors Engineering; Neuroimaging; Neurosciences; Cognitive Neuroscience. Classification: Neuropsychology & Neurology (2520). Population: Human (10). References Available: Y. Page Count: 3. Issue Publication Date: Jan 2, 2012. Copyright Statement: All rights reserved. Elsevier Inc. 2011. AB - This special issue of NeuroImage consists of articles invited from leaders in the field of neuroergonomics. A brief overview of the papers appearing in this special issue is provided. All of the papers describe studies using neuroimaging and related methods in the examination of different facets of perception, cognition, affect, and action. The current authors believe that this special issue provides an overview of this exciting, expanding new field. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - neuroergonomics KW - brain KW - neuroimaging KW - cognitive neuroscience KW - neurosciences KW - 2012 KW - Brain KW - Human Factors Engineering KW - Neuroimaging KW - Neurosciences KW - Cognitive Neuroscience KW - 2012 U1 - Sponsor: US Air Force Office of Scientific Research/AFRL, US. Grant: FA9550-10-1-0385. Recipients: Parasuraman, Raja U1 - Sponsor: Center of Excellence in Neuroergonomics, Technology, and Cognition (CENTEC). Recipients: Parasuraman, Raja DO - 10.1016/j.neuroimage.2011.08.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-24531-002&site=ehost-live&scope=site UR - ORCID: 0000-0003-4539-5467 UR - UR - rparasur@gmu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-19027-001 AN - 2011-19027-001 AU - Christensen, James C. AU - Estepp, Justin R. AU - Wilson, Glenn F. AU - Russell, Christopher A. T1 - The effects of day-to-day variability of physiological data on operator functional state classification. JF - NeuroImage JO - NeuroImage JA - Neuroimage Y1 - 2012/01/02/ VL - 59 IS - 1 SP - 57 EP - 63 CY - Netherlands PB - Elsevier Science SN - 1053-8119 SN - 1095-9572 AD - Christensen, James C., Applied Neuroscience Branch, Air Force Research Laboratory, 711th Human Performance Wing, 2255 H Street, B248, Wright-Patterson AFB, OH, US, 45433 N1 - Accession Number: 2011-19027-001. PMID: 21840403 Partial author list: First Author & Affiliation: Christensen, James C.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Release Date: 20110829. Correction Date: 20111128. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Processes; Electrical Activity; Electroencephalography. Classification: Electrophysiology (2530). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. Supplemental Data: Other Internet. References Available: Y. Page Count: 7. Issue Publication Date: Jan 2, 2012. Publication History: First Posted Date: Aug 5, 2011; Accepted Date: Jul 29, 2011; Revised Date: Jul 27, 2011; First Submitted Date: Apr 11, 2011. AB - The application of pattern classification techniques to physiological data has undergone rapid expansion. Tasks as varied as the diagnosis of disease from magnetic resonance images, brain–computer interfaces for the disabled, and the decoding of brain functioning based on electrical activity have been accomplished quite successfully with pattern classification. These classifiers have been further applied in complex cognitive tasks to improve performance, in one example as an input to adaptive automation. In order to produce generalizable results and facilitate the development of practical systems, these techniques should be stable across repeated sessions. This paper describes the application of three popular pattern classification techniques to EEG data obtained from asymptotically trained subjects performing a complex multitask across five days in one month. All three classifiers performed well above chance levels. The performance of all three was significantly negatively impacted by classifying across days; however two modifications are presented that substantially reduce misclassifications. The results demonstrate that with proper methods, pattern classification is stable enough across days and weeks to be a valid, useful approach. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - physiological data KW - functional state KW - cognitive tasks KW - EEG KW - electrical activity KW - brain functions KW - 2012 KW - Cognitive Processes KW - Electrical Activity KW - Electroencephalography KW - 2012 DO - 10.1016/j.neuroimage.2011.07.091 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-19027-001&site=ehost-live&scope=site UR - UR - ORCID: 0000-0001-8049-9582 UR - ORCID: 0000-0003-4539-5467 UR - james.christensen@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-20571-001 AN - 2011-20571-001 AU - McKinley, R. Andy AU - Bridges, Nathaniel AU - Walters, Craig M. AU - Nelson, Jeremy T1 - Modulating the brain at work using noninvasive transcranial stimulation. JF - NeuroImage JO - NeuroImage JA - Neuroimage Y1 - 2012/01/02/ VL - 59 IS - 1 SP - 129 EP - 137 CY - Netherlands PB - Elsevier Science SN - 1053-8119 SN - 1095-9572 AD - McKinley, R. Andy, 2215 First Street Bldg. 33, Wright-Patterson AFB, OH, US, 45433 N1 - Accession Number: 2011-20571-001. PMID: 21840408 Partial author list: First Author & Affiliation: McKinley, R. Andy; Air Force Research Laboratory, Wright-Patterson AFB, OH, US. Release Date: 20110912. Correction Date: 20111212. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Brain Stimulation; Human Factors Engineering; Transcranial Magnetic Stimulation; Cognitive Neuroscience. Classification: Neuropsychology & Neurology (2520). Population: Human (10). References Available: Y. Page Count: 9. Issue Publication Date: Jan 2, 2012. Publication History: First Posted Date: Aug 5, 2011. AB - This paper proposes a shift in the way researchers currently view and use transcranial brain stimulation technologies. From a neuroscience perspective, the standard application of both transcranial magnetic stimulation (TMS) and transcranial direct current stimulation (tDCS) has been mainly to explore the function of various brain regions. These tools allow for noninvasive and painless modulation of cortical tissue. In the course of studying the function of an area, many studies often report enhanced performance of a task during or following the stimulation. However, little follow-up research is typically done to further explore these effects. Approaching this growing pool of cognitive neuroscience literature with a neuroergonomics mindset (i.e., studying the brain at work), the possibilities of using these stimulation techniques for more than simply investigating the function of cortical areas become evident. In this paper, we discuss how cognitive neuroscience brain stimulation studies may complement neuroergonomics research on human performance optimization. And, through this discussion, we hope to shift the mindset of viewing transcranial stimulation techniques as solely investigatory basic science tools or possible clinical therapeutic devices to viewing transcranial stimulation techniques as interventional tools to be incorporated in applied science research and systems for the augmentation and enhancement of human operator performance. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cognitive neuroscience KW - transcranial magnetic stimulation KW - brain KW - evoked potentials KW - 2012 KW - Brain Stimulation KW - Human Factors Engineering KW - Transcranial Magnetic Stimulation KW - Cognitive Neuroscience KW - 2012 DO - 10.1016/j.neuroimage.2011.07.075 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-20571-001&site=ehost-live&scope=site UR - andy.mckinley@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Christiansen, Bradley D. AU - Heller, Eric R. AU - Coutu Jr., Ronald A. AU - Vetury, Ramakrishna AU - Shealy, Jeffrey B. T1 - A Very Robust AlGaN/GaN HEMT Technology to High Forward Gate Bias and Current. JO - Active & Passive Electronic Components JF - Active & Passive Electronic Components Y1 - 2012/01// M3 - Article SP - 1 EP - 4 PB - Hindawi Publishing Corporation SN - 08827516 AB - Reports to date of GaN HEMTs subjected to forward gate bias stress include varied extents of degradation. We report an extremely robust GaN HEMT technology that survived--contrary to conventional wisdom--high forward gate bias (+6V) and current (> 1.8 A/mm) for >17.5 hours exhibiting only a slight change in gate diode characteristic, little decrease inmaximumdrain current, with only a 0.1 V positive threshold voltage shift, and, remarkably, a persisting breakdown voltage exceeding 200 V. [ABSTRACT FROM AUTHOR] AB - Copyright of Active & Passive Electronic Components is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM gallium nitride KW - ROBUST control KW - LOGIC circuits KW - ELECTRIC currents KW - ELECTRIC potential KW - BREAKDOWN (Electricity) N1 - Accession Number: 90174533; Christiansen, Bradley D. 1; Email Address: bradley.christiansen@wpafb.af.mil; Heller, Eric R. 2; Coutu Jr., Ronald A. 1; Vetury, Ramakrishna 3; Shealy, Jeffrey B. 3; Affiliations: 1: Department of Electrical and Computer Engineering, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH 45433, USA; 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; 3: Defense and Power Business Unit, RF Micro Devices, Inc., Charlotte, NC 28269, USA; Issue Info: 2012, p1; Subject Term: ALUMINUM gallium nitride; Subject Term: ROBUST control; Subject Term: LOGIC circuits; Subject Term: ELECTRIC currents; Subject Term: ELECTRIC potential; Subject Term: BREAKDOWN (Electricity); Number of Pages: 4p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1155/2012/493239 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=90174533&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Rice Jr., Gen Edward A. T1 - Building toward the Future. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2012/01//Jan/Feb2012 Y1 - 2012/01//Jan/Feb2012 VL - 26 IS - 1 M3 - Opinion SP - 4 EP - 7 PB - Superintendent of Documents SN - 1555385X AB - The author discusses the future of the U.S. Air Force. He mentions the 450-billion-dollar budget reduction of the Department of Defense (DOD) for 2012, pushing Air Force leaders to examine all missions and functions to identify where the service could take risk. Despite the budget cuts, he states that the Air Force continues to be the country's go-to force, providing global vigilance, reach, and power to exercise national strength. KW - UNITED States. Air Force -- Finance KW - BUDGET cuts KW - AIR forces KW - UNITED States. Dept. of Defense KW - UNITED States N1 - Accession Number: 78153886; Source Information: Jan/Feb2012, Vol. 26 Issue 1, p4; Subject Term: UNITED States. Air Force -- Finance; Subject Term: BUDGET cuts; Subject Term: AIR forces; Subject Term: UNITED States. Dept. of Defense; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 4p; ; Document Type: Opinion; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=78153886&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Coyne, Erik C.1 T1 - INFLUENCE WITH CONFIDENCE: ENABLING LAWFUL COMMAND INFLUENCE BY UNDERSTANDING UNLAWFUL COMMAND INFLUENCE--A GUIDE FOR COMMANDERS, JUDGE ADVOCATES, AND SUBORDINATES. JO - Air Force Law Review JF - Air Force Law Review J1 - Air Force Law Review PY - 2012/01// Y1 - 2012/01// VL - 68 M3 - Article SP - 1 EP - 26 SN - 00948381 AB - The article presents information on the requirement of unlawful command influence under the military law of the U.S. for the purpose of enabling the lawful command influence with respect to the views of judge advocates, commanders and the subordinates. The difference between concept of unlawful command influence and lawful command influence is required by the practitioners of military justice. Information on the role of the military personnel of U.S. Army is also presented. KW - Unlawful command influence (Military law) KW - Judge advocates KW - Military law KW - Courts-martial & courts of inquiry KW - Military personnel KW - United States. Army N1 - Accession Number: 77789090; Authors:Coyne, Erik C. 1; Affiliations: 1: United States Air Force Academy; Subject: Unlawful command influence (Military law); Subject: Judge advocates; Subject: Military law; Subject: Courts-martial & courts of inquiry; Subject: Military personnel; Subject: United States. Army; Subject: United States; Number of Pages: 26p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=77789090&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR AU - McNulty, Shelly S.1 T1 - MYTH BUSTED: WOMEN ARE SERVING IN GROUND COMBAT POSITIONS. JO - Air Force Law Review JF - Air Force Law Review J1 - Air Force Law Review PY - 2012/01// Y1 - 2012/01// VL - 68 M3 - Article SP - 119 EP - 165 SN - 00948381 AB - The article presents information on the participation of women in the ground combat positions during war with reference to assigning of women in the positions by the Department of Defense of the U.S. The rule of the direct ground combat includes the eligibility and the qualification of the service member. Information on the assignments controlled by the memorandum for the women in the Army, Navy, Marine Corps and the Air Force of the U.S. is also presented. KW - Eligibility (Social aspects) KW - Military personnel KW - Women in combat KW - United States. Dept. of Defense KW - United States. Army KW - United States. Navy KW - United States. Marine Corps KW - United States. Air Force N1 - Accession Number: 77789093; Authors:McNulty, Shelly S. 1; Affiliations: 1: Assistant Professor for the Department of Law, United States Air Force Academy, Colorado; Subject: Women in combat; Subject: United States. Dept. of Defense; Subject: Eligibility (Social aspects); Subject: Military personnel; Subject: United States. Army; Subject: United States. Navy; Subject: United States. Marine Corps; Subject: United States. Air Force; Number of Pages: 47p; Statute:National Defense Authorization Act. Pub. L. No. 109-163,Sec. 541(a)(1), 119 Stat. 3251(Jan.6, 2006); Jurisdiction:United States; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=77789093&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR AU - Ramer, Jacob A.1 T1 - EVIDENCE OBTAINED BY FOREIGN POLICE: ADMISSIBILITY AND THE ROLE OF FOREIGN LAW. JO - Air Force Law Review JF - Air Force Law Review J1 - Air Force Law Review PY - 2012/01// Y1 - 2012/01// VL - 68 M3 - Article SP - 207 EP - 234 SN - 00948381 AB - The article presents information on the evidence obtained through the foreign police regarding the role and enforcement of foreign law and its admissibility of the U.S. The enforcement of the foreign law includes the application of military law, court martial under the military courts of the country. Information on the role of the foreign interrogations and the foreign searches regarding the foreign law is also presented. KW - Admissible evidence KW - Pleading & proof of foreign law KW - Evidence (Law) KW - Searches & seizures (Law) KW - Military law KW - Courts-martial & courts of inquiry KW - Military courts N1 - Accession Number: 77789095; Authors:Ramer, Jacob A. 1; Affiliations: 1: Harvard University, Chicago-Kent College of Law, United States Air Force currently serving as Area Defense Counsel, Misawa Air Base, Japan; Subject: Admissible evidence; Subject: Pleading & proof of foreign law; Subject: Evidence (Law); Subject: Searches & seizures (Law); Subject: Military law; Subject: Courts-martial & courts of inquiry; Subject: Military courts; Subject: United States; Number of Pages: 28p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=77789095&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR AU - Lore, Michael B. AU - Heimbuch, Brian K. AU - Brown, Teanne L. AU - Wander, Joseph D. AU - Hinrichs, Steven H. T1 - Effectiveness of Three Decontamination Treatments against Influenza Virus Applied to Filtering Facepiece Respirators. JO - Annals of Occupational Hygiene JF - Annals of Occupational Hygiene Y1 - 2012/01// VL - 56 IS - 1 M3 - Article SP - 92 EP - 101 SN - 00034878 AB - Filtering facepiece respirators (FFRs) are recommended for use as precautions against airborne pathogenic microorganisms; however, during pandemics demand for FFRs may far exceed availability. Reuse of FFRs following decontamination has been proposed but few reported studies have addressed the feasibility. Concerns regarding biocidal efficacy, respirator performance post decontamination, decontamination cost, and user safety have impeded adoption of reuse measures. This study examined the effectiveness of three energetic decontamination methods [ultraviolet germicidal irradiation (UVGI), microwave-generated steam, and moist heat] on two National Institute for Occupational Safety and Health-certified N95 FFRs (3M models 1860s and 1870) contaminated with H5N1. An aerosol settling chamber was used to apply virus-laden droplets to FFRs in a method designed to simulate respiratory deposition of droplets onto surfaces. When FFRs were examined post decontamination by viral culture, all three decontamination methods were effective, reducing virus load by >4 log median tissue culture infective dose. Analysis of treated FFRs using a quantitative molecular amplification assay (quantitative real-time polymerase chain reaction) indicated that UVGI decontamination resulted in lower levels of detectable viral RNA than the other two methods. Filter performance was evaluated before and after decontamination using a 1% NaCl aerosol. As all FFRs displayed <5% penetration by 300-nm particles, no profound reduction in filtration performance was caused in the FFRs tested by exposure to virus and subsequent decontamination by the methods used. These findings indicate that, when properly implemented, these methods effectively decontaminate H5N1 on the two FFR models tested and do not drastically affect their filtering function; however, other considerations may influence decisions to reuse FFRs. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of Occupational Hygiene is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Aerosols (Sprays) KW - Industrial hygiene KW - Decontamination (From gases, chemicals, etc.) -- Methodology KW - Face KW - Medical personnel KW - Orthomyxoviruses KW - Research -- Finance KW - Breathing apparatus KW - bioaerosol KW - decontamination KW - healthcare workers KW - influenza virus KW - N95 respirator KW - respirator reuse KW - United States. Food & Drug Administration N1 - Accession Number: 70438528; Lore, Michael B. 1; Heimbuch, Brian K. 2; Brown, Teanne L. 1; Wander, Joseph D. 3; Hinrichs, Steven H. 1; Affiliations: 1: Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198, USA; 2: Engineering and Science Division, Applied Research Associates, Panama City, FL 32401, USA; 3: Airbase Sciences Branch, Air Force Research Laboratory, Tyndall Air Force Base, FL 32403, USA; Issue Info: Jan2012, Vol. 56 Issue 1, p92; Thesaurus Term: Aerosols (Sprays); Thesaurus Term: Industrial hygiene; Subject Term: Decontamination (From gases, chemicals, etc.) -- Methodology; Subject Term: Face; Subject Term: Medical personnel; Subject Term: Orthomyxoviruses; Subject Term: Research -- Finance; Subject Term: Breathing apparatus; Author-Supplied Keyword: bioaerosol; Author-Supplied Keyword: decontamination; Author-Supplied Keyword: healthcare workers; Author-Supplied Keyword: influenza virus; Author-Supplied Keyword: N95 respirator; Author-Supplied Keyword: respirator reuse ; Company/Entity: United States. Food & Drug Administration; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=70438528&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 104631883 T1 - Effectiveness of Three Decontamination Treatments against Influenza Virus Applied to Filtering Facepiece Respirators. AU - Lore, Michael B. AU - Heimbuch, Brian K. AU - Brown, Teanne L. AU - Wander, Joseph D. AU - Hinrichs, Steven H. Y1 - 2012/01// N1 - Accession Number: 104631883. Language: English. Entry Date: 20120214. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Europe; Peer Reviewed; UK & Ireland. Grant Information: FUNDING : Air Force Research Laboratory Contract Number FA8650-07-C-5911 to S.H.H.. NLM UID: 0203526. KW - Decontamination, Hazardous Materials -- Methods KW - Orthomyxoviridae KW - Respiratory Protective Devices KW - Face KW - Human KW - Health Personnel KW - United States Food and Drug Administration KW - Aerosols KW - Occupational Health KW - Funding Source SP - 92 EP - 101 JO - Annals of Occupational Hygiene JF - Annals of Occupational Hygiene JA - ANN OCCUP HYG VL - 56 IS - 1 PB - Oxford University Press / USA SN - 0003-4878 AD - Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198, USA AD - Engineering and Science Division, Applied Research Associates, Panama City, FL 32401, USA AD - Airbase Sciences Branch, Air Force Research Laboratory, Tyndall Air Force Base, FL 32403, USA U2 - PMID: 21859950. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104631883&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Hafemeister, Thomas L.1,2 AU - Garner, Sharon G.3 AU - Bath, Veronica E.4 T1 - Forging Links and Renewing Ties: Applying the Principles of Restorative and Procedural Justice to Better Respond to Criminal Offenders with a Mental Disorder. JO - Buffalo Law Review JF - Buffalo Law Review J1 - Buffalo Law Review PY - 2012/01// Y1 - 2012/01// VL - 60 IS - 1 CP - 1 M3 - Article SP - 147 EP - 223 SN - 00239356 AB - The article focuses on procedural justice for criminal offenders with mental disorders in the U.S. topics include criminal justice alternatives to incarceration, the concept of restorative justice, and the use of drug and mental health courts instead of criminal courts. Information is provided on punishment models for mentally ill offenders. KW - Mentally ill criminals KW - Criminal justice administration KW - Courts of special jurisdiction KW - Restorative justice KW - Criminal law KW - Alternatives to imprisonment N1 - Accession Number: 72661331; Authors:Hafemeister, Thomas L. 1,2; Garner, Sharon G. 3; Bath, Veronica E. 4; Affiliations: 1: Associate Professor, School of Law, University of Virginia; 2: Associate Professor, Medical Education, School of Medicine, University of Virginia; 3: Public Defender, Rhode Island Public Defender's Office; 4: Assistant Staff Judge Advocate, United States Air Force, Judge Advocate General's Corps; Subject: Mentally ill criminals; Subject: Criminal justice administration; Subject: Courts of special jurisdiction; Subject: Restorative justice; Subject: Criminal law; Subject: Alternatives to imprisonment; Subject: United States; Number of Pages: 77p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lft&AN=72661331&site=ehost-live&scope=site DP - EBSCOhost DB - lft ER - TY - JOUR ID - 104202995 T1 - Diabetic Neuropathic Pain: Real World Treatment Options. AU - Lindsay, Tammy J. AU - Vitrikas, Kirsten AU - Temporal, Michael AU - Herndon, Christopher M. Y1 - 2012/01// N1 - Accession Number: 104202995. Language: English. Entry Date: 20130806. Revision Date: 20150711. Publication Type: Journal Article; review; tables/charts. Journal Subset: Australia & New Zealand; Biomedical. KW - Diabetic Neuropathies -- Therapy KW - Pain -- Therapy KW - Medicine KW - Diabetic Neuropathies -- Physiopathology KW - Diabetic Neuropathies -- Complications KW - Diabetic Patients -- Evaluation KW - Academic Medical Centers KW - Glycemic Control KW - Diabetes Mellitus -- Complications KW - Anticonvulsants -- Therapeutic Use KW - Antidepressive Agents -- Therapeutic Use KW - Analgesics, Opioid KW - Practice Guidelines KW - Alternative Therapies KW - Diabetic Neuropathies -- Risk Factors KW - Medical Organizations KW - Amitriptyline -- Administration and Dosage KW - Imipramine -- Administration and Dosage KW - Nortriptyline -- Administration and Dosage SP - 169 EP - 183 JO - Clinical Medicine Insights: Therapeutics JF - Clinical Medicine Insights: Therapeutics JA - CLIN MED INSIGHTS THER IS - 4 PB - Libertas Academica Ltd. SN - 1179-559X AD - Saint Louis University School of Medicine, United States Air Force AD - Saint Louis University School of Medicine, Southern Illinois Healthcare Foundation AD - Saint Louis University School of Medicine, School of Pharmacy, Southern Illinois University Edwardsville, IL USA. DO - 10.4137/CMT.S7266 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104202995&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Return to Sport After Meniscal Repair. AU - Barcia, Anthony M. AU - Kozlowski, Erick J. AU - Tokish, John M. JO - Clinics in Sports Medicine JF - Clinics in Sports Medicine Y1 - 2012/01// VL - 31 IS - 1 SP - 155 EP - 166 SN - 02785919 N1 - Accession Number: 70247877; Author: Barcia, Anthony M.: 1 email: anthony.m.barcia@us.army.mil. Author: Kozlowski, Erick J.: 2 Author: Tokish, John M.: 1 ; Author Affiliation: 1 Tripler Army Medical Center, 1 Jarrett White Road, Honolulu, HI, 96859-5000, USA: 2 United States Air Force Academy, 2304 Cadet Drive, Suite 3100, U.S. Air Force Academy, CO 80840-5016, USA; No. of Pages: 12; Language: English; Publication Type: Article; Update Code: 20120321 KW - *SPORTS injuries -- Treatment KW - *SURGERY KW - *MENISCUS (Anatomy) KW - *MENISCUS (Anatomy) -- Wounds & injuries KW - *MEDICAL rehabilitation KW - *ORTHOPEDIC surgery KW - *SPORTS injuries KW - *SPORTS participation KW - *TREATMENT effectiveness KW - *WEIGHT-bearing (Orthopedics) KW - *REHABILITATION KW - TREATMENT KW - METHODOLOGY KW - MENISCECTOMY KW - OUTCOME assessment (Medical care) KW - DECISION making in clinical medicine KW - Meniscal repair KW - Meniscus KW - Rehabilitation KW - Return to sport KW - Therapy UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=70247877&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 108170076 T1 - Return to Sport After Meniscal Repair. AU - Barcia, Anthony M. AU - Kozlowski, Erick J. AU - Tokish, John M. Y1 - 2012/01// N1 - Accession Number: 108170076. Language: English. Entry Date: 20120321. Revision Date: 20150712. Publication Type: Journal Article; pictorial; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. Special Interest: Perioperative Care; Physical Therapy; Sports Medicine. NLM UID: 8112473. KW - Meniscal Injuries -- Surgery KW - Athletic Injuries -- Surgery KW - Sports Re-Entry KW - Rehabilitation, Athletic -- Methods KW - Treatment Outcomes KW - Orthopedic Surgery -- Rehabilitation KW - Decision Making, Clinical KW - Weight-Bearing KW - Meniscectomy -- Rehabilitation SP - 155 EP - 166 JO - Clinics in Sports Medicine JF - Clinics in Sports Medicine JA - CLIN SPORTS MED VL - 31 IS - 1 CY - Philadelphia, Pennsylvania PB - W B Saunders SN - 0278-5919 AD - Tripler Army Medical Center, 1 Jarrett White Road, Honolulu, HI, 96859-5000, USA AD - United States Air Force Academy, 2304 Cadet Drive, Suite 3100, U.S. Air Force Academy, CO 80840-5016, USA DO - 10.1016/j.csm.2011.08.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=108170076&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Sun, Wenting AU - Uddi, Mruthunjaya AU - Won, Sang Hee AU - Ombrello, Timothy AU - Carter, Campbell AU - Ju, Yiguang T1 - Kinetic effects of non-equilibrium plasma-assisted methane oxidation on diffusion flame extinction limits JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/01// VL - 159 IS - 1 M3 - Article SP - 221 EP - 229 SN - 00102180 AB - Abstract: The kinetic effects of low temperature non-equilibrium plasma assisted CH4 oxidation on the extinction of partially premixed methane flames was studied at 60Torr by blending 2% CH4 by volume into the oxidizer stream of a counterflow system. The experiments showed that non-equilibrium plasma can dramatically accelerate the CH4 oxidation at low temperature. The rapid CH4 oxidation via plasma assisted combustion resulted in fast chemical heat release and extended the extinction limits significantly. Furthermore, experimental results showed that partial fuel mixing in the oxidizer stream led to a dramatic decrease of O concentration due to its rapid consumption by CH4 oxidation at low temperature. The products of plasma assisted CH4 oxidation were measured using the Two-photon Absorption Laser-Induced Fluorescence (TALIF) method (for atomic oxygen, O), Fourier Transform Infrared (FTIR) spectroscopy, and Gas Chromatography (GC). The product concentrations were used to validate the plasma assisted combustion kinetic model. The comparisons showed the kinetic model over-predicted the CO, H2O and H2 concentrations and under-predicted CO2 concentration. A path flux analysis showed that O generated by the plasma was the critical species for extinction enhancement. In addition, the results showed that O was produced mainly by direct electron impact dissociation reactions and the collisional dissociation reactions of electronically excited molecules with O2. Moreover, these reactions involving electron impact and excited species collisional dissociation of CH4 contributed approximately a mole fraction of 0.1 of total radical production. The present experiments produced quantitative species and extinction data of low temperature plasma assisted combustion to constrain the uncertainties in plasma/flame kinetic models. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Methane KW - Oxidation KW - Diffusion KW - Combustion KW - Fuel KW - Spectrum analysis KW - Equilibrium KW - Plasma (Ionized gases) KW - Flame KW - Low temperatures KW - Heat flux KW - Counterflow extinction KW - Nanosecond pulsed discharge KW - Partially premixed flames KW - Path flux analysis KW - Plasma assisted combustion KW - Plasma flame chemistry reactions N1 - Accession Number: 69534052; Sun, Wenting 1; Uddi, Mruthunjaya 1; Won, Sang Hee 1; Ombrello, Timothy 2; Carter, Campbell 2; Ju, Yiguang 1; Email Address: yju@princeton.edu; Affiliations: 1: Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA; 2: US Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, OH 45433, USA; Issue Info: Jan2012, Vol. 159 Issue 1, p221; Thesaurus Term: Methane; Thesaurus Term: Oxidation; Thesaurus Term: Diffusion; Thesaurus Term: Combustion; Thesaurus Term: Fuel; Thesaurus Term: Spectrum analysis; Subject Term: Equilibrium; Subject Term: Plasma (Ionized gases); Subject Term: Flame; Subject Term: Low temperatures; Subject Term: Heat flux; Author-Supplied Keyword: Counterflow extinction; Author-Supplied Keyword: Nanosecond pulsed discharge; Author-Supplied Keyword: Partially premixed flames; Author-Supplied Keyword: Path flux analysis; Author-Supplied Keyword: Plasma assisted combustion; Author-Supplied Keyword: Plasma flame chemistry reactions; NAICS/Industry Codes: 454310 Fuel Dealers; NAICS/Industry Codes: 454319 Other fuel dealers; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.combustflame.2011.07.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=69534052&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Liu, Zheng AU - Blasch, Erik AU - Xue, Zhiyun AU - Zhao, Jiying AU - Laganiere, Robert AU - Wu, Wei T1 - Objective Assessment of Multiresolution Image Fusion Algorithms for Context Enhancement in Night Vision: A Comparative Study. JO - IEEE Transactions on Pattern Analysis & Machine Intelligence JF - IEEE Transactions on Pattern Analysis & Machine Intelligence J1 - IEEE Transactions on Pattern Analysis & Machine Intelligence PY - 2012/01// Y1 - 2012/01// VL - 34 IS - 1 M3 - Article SP - 94 EP - 109 SN - 01628828 AB - Comparison of image processing techniques is critically important in deciding which algorithm, method, or metric to use for enhanced image assessment. Image fusion is a popular choice for various image enhancement applications such as overlay of two image products, refinement of image resolutions for alignment, and image combination for feature extraction and target recognition. Since image fusion is used in many geospatial and night vision applications, it is important to understand these techniques and provide a comparative study of the methods. In this paper, we conduct a comparative study on 12 selected image fusion metrics over six multiresolution image fusion algorithms for two different fusion schemes and input images with distortion. The analysis can be applied to different image combination algorithms, image processing methods, and over a different choice of metrics that are of use to an image processing expert. The paper relates the results to an image quality measurement based on power spectrum and correlation analysis and serves as a summary of many contemporary techniques for objective assessment of image fusion algorithms. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Pattern Analysis & Machine Intelligence is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIGITAL image processing KW - FLICKER fusion KW - NIGHT vision KW - RESOLUTION (Optics) KW - ALGORITHMS KW - IMAGE quality analysis KW - COMPARATIVE studies N1 - Accession Number: 67368304; Source Information: Jan2012, Vol. 34 Issue 1, p94; Subject Term: DIGITAL image processing; Subject Term: FLICKER fusion; Subject Term: NIGHT vision; Subject Term: RESOLUTION (Optics); Subject Term: ALGORITHMS; Subject Term: IMAGE quality analysis; Subject Term: COMPARATIVE studies; Subject Term: ; Number of Pages: 0p; ; Document Type: Article; L3 - 10.1109/TPAMI.2011.109 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=67368304&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Patton, L.K. AU - Frost, S.W. AU - Rigling, B.D. T1 - Efficient design of radar waveforms for optimised detection in coloured noise. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2012/01// VL - 6 IS - 1 M3 - Article SP - 21 EP - 29 SN - 17518784 AB - The authors present a computationally efficient method for designing practical radar transmit waveforms that maximize the signal-to-interference-plus-noise ratio (SINR) in a known additive coloured Gaussian noise environment. The problem reduces to a non-linear constrained optimisation in which the authors seek the SINR-maximising transmit waveform that has a specified envelope and an acceptable autocorrelation sequence (ACS). The waveform ACS can be constrained either directly or indirectly. The direct approach involves forcing the ACS magnitude below a specified level at each lag. This provides the greatest control over the waveform ACS, but it is too computationally demanding for many realistic problem sizes. Indirect methods of ACS constraint can be computationally less demanding, but they afford only inexact control over the waveform ACS. The leading indirect approach, which relies on the so-called similarity constraint, requires significantly fewer calculations than the direct approach, but it provides significantly less SINR improvement. The indirect approach presented here relies on a parametrisation of the phase perturbations of a linear frequency modulated waveform. This approach requires fewer calculations than the direct approach, and can provide more SINR improvement than the similarity constraint approach. As such, this new approach may be preferable when computation time is limited. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAUSSIAN distribution KW - DETECTORS KW - WAVE analysis KW - AUTOCORRELATION (Statistics) KW - NOISE KW - RADAR N1 - Accession Number: 70565878; Patton, L.K. 1; Frost, S.W. 2; Rigling, B.D. 3; Affiliations: 1: Matrix Research, Dayton, USA; 2: Air Force Research Laboratory (AFRL/RYAP), Radar Signal Processing Branch, Radar Division, Sensors Directorate, Wright-Patterson AFB, USA; 3: Wright State University, Department of Electrical Engineering, Dayton, USA; Issue Info: Jan2012, Vol. 6 Issue 1, p21; Thesaurus Term: GAUSSIAN distribution; Subject Term: DETECTORS; Subject Term: WAVE analysis; Subject Term: AUTOCORRELATION (Statistics); Subject Term: NOISE; Subject Term: RADAR; Number of Pages: 9p; Illustrations: 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1049/iet-rsn.2011.0071 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=70565878&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Ivanov, Stoyu I. AU - Payne, Brian C. T1 - ANALYSIS OF THE PORTFOLIO DIVERSIFICATION BENEFITS OF THE US DEFENSE INDUSTRY ETFs. JO - International Journal of Finance JF - International Journal of Finance Y1 - 2012/01// VL - 24 IS - 1 M3 - Article SP - 7085 EP - 7094 SN - 10412743 AB - In this study we examine whether defense factors are priced in stock returns. We use Fama and French (1993) and Chen, Roll, and Ross (1986) models to test for the pricing. We use two aerospace and defense Exchange Traded Funds PPA and ITA as proxies for defense factors. We document that PPA and ITA have a strong relation with the market and a significant relation to industrial production. Despite these ETFs' strong relation to the market portfolio, we do not document relation between the market and industrial production. Additionally, we examine the PPA, ITA and the market's interaction with five major industries which reveals a lack of relation of PPA and ITA to the consumer goods industry. This indicates that the two aerospace and defense ETFs have characteristics which are not priced in stock returns and as such provide potential benefit to portfolio diversification. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Finance is the property of International Journal of Finance and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PORTFOLIO management (Investments) KW - DIVERSIFICATION (Finance) KW - DEFENSE industries KW - EMPLOYEE fringe benefits KW - RATE of return KW - STOCKS (Finance) KW - PRICING KW - EXCHANGE traded funds N1 - Accession Number: 86957389; Ivanov, Stoyu I. 1; Payne, Brian C. 2; Affiliations: 1: San José State University; 2: US Air Force Academy; Issue Info: 2012, Vol. 24 Issue 1, p7085; Thesaurus Term: PORTFOLIO management (Investments); Thesaurus Term: DIVERSIFICATION (Finance); Thesaurus Term: DEFENSE industries; Thesaurus Term: EMPLOYEE fringe benefits; Thesaurus Term: RATE of return; Thesaurus Term: STOCKS (Finance); Thesaurus Term: PRICING; Thesaurus Term: EXCHANGE traded funds; NAICS/Industry Codes: 525120 Health and Welfare Funds; NAICS/Industry Codes: 525190 Other Insurance Funds; NAICS/Industry Codes: 523920 Portfolio Management; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=86957389&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Bond, Vanessa L. AU - Canfield, Robert A. AU - Cooper, Jonathan E. AU - Blair, Maxwell T1 - Experimental Nonlinear Static Deflections of a Subscale Joined Wing. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2012/01//Jan/Feb2012 Y1 - 2012/01//Jan/Feb2012 VL - 49 IS - 1 M3 - Article SP - 329 EP - 333 SN - 00218669 AB - The article focuses on a study which described the design and testing of a geometrically and aerodynamically scaled sensorcraft model. A description of the modifications of the as-delivered finite element method (FRM) as well as the test setup for nonlinear static response are provided. Findings show that the FEM and experimental displacement both demonstrate nonlinear response with similarly shaped load-deflection curves. KW - AIRPLANES KW - FINITE element method KW - CURVES KW - GEOMETRY KW - AERODYNAMICS N1 - Accession Number: 72661125; Source Information: Jan/Feb2012, Vol. 49 Issue 1, p329; Subject Term: AIRPLANES; Subject Term: FINITE element method; Subject Term: CURVES; Subject Term: GEOMETRY; Subject Term: AERODYNAMICS; Subject Term: ; Number of Pages: 5p; ; Document Type: Article; L3 - 10.2514/1.C031423 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=72661125&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 108218559 T1 - Irritable bowel syndrome: a 'mesh' of a situation. AU - Barnes MG Y1 - 2012/01//2012 Jan-Feb N1 - Accession Number: 108218559. Language: English. Entry Date: 20120518. Revision Date: 20150712. Publication Type: Journal Article; case study. Journal Subset: Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 101256526. KW - Surgery, Reconstructive -- Adverse Effects KW - Irritable Bowel Syndrome -- Etiology KW - Postoperative Complications KW - Surgical Mesh -- Adverse Effects KW - Female KW - Foreign-Body Migration KW - Irritable Bowel Syndrome -- Physiopathology KW - Middle Age KW - Polyenes SP - 120 EP - 123 JO - Journal of the American Board of Family Medicine JF - Journal of the American Board of Family Medicine JA - J AM BOARD FAM MED VL - 25 IS - 1 CY - Lexington, Kentucky PB - American Board of Family Medicine AB - The diagnosis of irritable bowel syndrome (IBS) frequently is made after the exclusion of a mechanical etiology for a patient's symptoms. This case demonstrates that IBS symptoms can be caused by a rare complication of a common surgery: mesh herniorrhaphy repair. The patient is a 50-year-old woman who underwent periumbilical Marlex mesh herniorrhaphy 13 years before presentation. After her operation, the patient developed constipation (approximately one bowel movement per week) alternating with diarrhea for approximately 10 years. An abdominal radiograph showed large amounts of stool, and after a normal colonoscopy the patient was diagnosed with IBS. The patient was treated with tegaserod (Zelnorm) and polyethylene glycol (MiraLAX), which did not palliate her symptoms. The patient presented with obstructive symptoms and physical findings of an incarcerated umbilical hernia. A computed tomography (CT) scan of the abdomen confirmed an umbilical hernia involving a segment of small bowel with surrounding fecalization of enteric contents. During operative repair, the patient was found to have Marlex mesh fully eroded into the lumen of the small bowel, causing a partial obstruction. The involved section of small bowel was resected, and during serial follow-up the patient had complete resolution of her IBS-like symptoms. A discussion follows regarding the implications of mesh migration, and questions are posed for future research. SN - 1557-2625 AD - the Medical Corps, United States Air Force, Dewitt Army Hospital, Fort Belvoir, VA. U2 - PMID: 22218633. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=108218559&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 104621584 T1 - Leadership and Coping Among Air Force Officers. AU - Alarcon, Gene M. AU - Lyons, Joseph B. AU - Schlessman, Bradley R. AU - Barelka, Alexander J. Y1 - 2012/01// N1 - Accession Number: 104621584. Language: English. Entry Date: 20120111. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services; Psychiatry/Psychology. Instrumentation: Cope (Carver et al); Leadership Profile Measure (LPM). NLM UID: 8915802. KW - Military Personnel -- Psychosocial Factors KW - United States Air Force KW - Leadership KW - Coping KW - Human KW - Male KW - Female KW - Adult KW - Descriptive Statistics KW - Coefficient Alpha KW - Multiple Regression KW - Scales KW - Psychological Tests SP - 29 EP - 47 JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) JA - MILIT PSYCHOL VL - 24 IS - 1 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - The current study explored the relationship between coping and leadership in a military sample. Data were collected from Air Force officers attending a 6-week professional military education course focusing on leadership development. Correlation analyses illustrate that leadership styles are associated with different styles of coping. Hierarchical regression further demonstrates that transformational leaders use more positive reinterpretation and problem-focused coping strategies and less emotion-focused coping strategies. Transactional leaders utilize more problem-focused coping strategies. Results also demonstrated mixed results on the relationship between transformational leadership and positive reinterpretation. SN - 0899-5605 AD - Air Force Research Laboratory, Wright Patterson Air Force Base, USA AD - Air Force Office of Scientific Research, USA DO - 10.1080/08995605.2012.639674 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104621584&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - CHAP ID - 2012-21042-006 AN - 2012-21042-006 AU - Peterson, Alan L. AU - Hryshko-Mullen, Ann S. AU - McGeary, Donald D. ED - Kennedy, Carrie H. ED - Zillmer, Eric A. ED - Kennedy, Carrie H., (Ed) ED - Zillmer, Eric A., (Ed) T1 - Clinical health psychology and behavioral medicine in military healthcare settings. T2 - Military psychology: Clinical and operational applications, 2nd ed. Y1 - 2012/// SP - 121 EP - 155 CY - New York, NY, US PB - Guilford Press SN - 978-1-4625-0649-1 N1 - Accession Number: 2012-21042-006. Partial author list: First Author & Affiliation: Peterson, Alan L.; United States Air Force, Department of Psychiatry, University of Texas Health Science Center at San Antonio, San Antonio, TX, US. Release Date: 20121008. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-1-4625-0649-1, Hardcover. Language: English. Major Descriptor: Evidence Based Practice; Health Care Psychology; Military Psychology; Behavioral Medicine. Minor Descriptor: Disease Management; Intervention. Classification: Health & Mental Health Treatment & Prevention (3300); Military Psychology (3800). Population: Human (10). Location: US. Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 35. AB - This chapter reviews the specialty area of behavioral medicine and clinical health psychology in military healthcare. We begin with the definition of various terms used to describe this area. Next, the recommended education and training for individuals interested in working in this specialty are evaluated. The chapter examines the spectrum of applications of behavioral medicine and clinical health psychology, including disease management and health interventions. Finally, we provide a brief review of individual and group evidence-based interventions for common behavioral risk factors and medical conditions treated in military behavioral medicine and clinical health psychology settings. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - clinical health psychology KW - behavioral medicine KW - military healthcare KW - disease management KW - health interventions KW - 2012 KW - Evidence Based Practice KW - Health Care Psychology KW - Military Psychology KW - Behavioral Medicine KW - Disease Management KW - Intervention KW - 2012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-21042-006&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2012-21042-008 AN - 2012-21042-008 AU - French, Louis M. AU - Anderson-Barnes, Victoria AU - Ryan, Laurie M. AU - Zazeckis, Thomas M. AU - Harvey, Sally ED - Kennedy, Carrie H. ED - Zillmer, Eric A. ED - Kennedy, Carrie H., (Ed) ED - Zillmer, Eric A., (Ed) T1 - Neuropsychological practice in the military. T2 - Military psychology: Clinical and operational applications, 2nd ed. Y1 - 2012/// SP - 185 EP - 210 CY - New York, NY, US PB - Guilford Press SN - 978-1-4625-0649-1 N1 - Accession Number: 2012-21042-008. Partial author list: First Author & Affiliation: French, Louis M.; Defense and Veterans Brain Injury Center, Walter Reed National Military Medical Center, Bethesda, MD, US. Release Date: 20121008. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-1-4625-0649-1, Hardcover. Language: English. Major Descriptor: Military Psychology; Neuropsychological Assessment; Neuropsychology. Minor Descriptor: Military Personnel. Classification: Neuropsychology & Neurology (2520); Military Psychology (3800). Population: Human (10). Location: US. Intended Audience: Psychology: Professional & Research (PS). Tests & Measures: Military Acute Concussion Evaluation; Mental Health Advisory Team 7; Medical Flight Screening evaluation; Multidimensional Aptitude Battery-II; Armstrong Laboratory Aviator Personality Survey (ALAPS); Neuroticism, Extraversion, and Openness Personality Inventory—Revised; AFOQT; Basic Attributes Test; MicroCog: Assessment of Cognitive Functioning; Personality Assessment Inventory DOI: 10.1037/t03903-000. References Available: Y. Page Count: 26. AB - Military neuropsychology's roots date back to World War I when early assessment and neurological rehabilitative efforts were first undertaken as a result of the many head injuries sustained by service members during combat (Boake, 1989). Throughout World Wars I and II, several neuropsychological assessment tools were developed and implemented into routine practice within the military (Driskell & Olmstead, 1989). Since that time, military neuropsychology has grown and neuropsychological assessment practices continue to play a key role in operational readiness and maintenance of peak performance of military members (for a history of military neuropsychology, see Kennedy, Boake, & Moore, 2010; see also Chapter 1, this volume). In today's conflicts in Iraq and Afghanistan, neuropsychologists are heavily involved in the identification, assessment, and treatment of neuropsychological disorders that arise as a result of deployment and combat. Head and neck injuries continue to be prevalent in the present-day conflicts, with traumatic brain injury (TBI) being described as the signature injury of these conflicts (McCrea et al., 2008). Additionally, postconcussive symptoms and posttraumatic stress symptoms frequently result in the military population following combat exposure (McCrea et al., 2008). Consequently, the need for military neuropsychologists is ever present. This chapter provides an overview of this specialized field, with brief discussions of requisite training; common areas of clinical practice; fitness-for-duty evaluations; symptom validity and military neuropsychological evaluations; the role of neuropsychology in assessing and treating brain injury, posttraumatic stress disorder (PTSD), attention-deficit/hyperactivity disorder (ADHD), and learning disorders (LD); aerospace neuropsychology; and various operational applications. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - military neuropsychology KW - military service members KW - neuropsychological assessment KW - 2012 KW - Military Psychology KW - Neuropsychological Assessment KW - Neuropsychology KW - Military Personnel KW - 2012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-21042-008&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2012-21042-010 AN - 2012-21042-010 AU - Pauli, Ingrid B. AU - Kennedy, Carrie H. AU - Jones, David E. AU - McDonald, William A. AU - Grayson, Revonda ED - Kennedy, Carrie H. ED - Zillmer, Eric A. ED - Kennedy, Carrie H., (Ed) ED - Zillmer, Eric A., (Ed) T1 - Substance abuse services and gambling treatment in the military. T2 - Military psychology: Clinical and operational applications, 2nd ed. Y1 - 2012/// SP - 251 EP - 280 CY - New York, NY, US PB - Guilford Press SN - 978-1-4625-0649-1 N1 - Accession Number: 2012-21042-010. Partial author list: First Author & Affiliation: Pauli, Ingrid B.; United States Public Health Service, Department of Psychology, Naval Medical Center, Portsmouth, VA, US. Release Date: 20121008. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-1-4625-0649-1, Hardcover. Language: English. Major Descriptor: Drug Abuse; Drug Rehabilitation; Military Personnel; Pathological Gambling; Treatment. Minor Descriptor: Comorbidity; Evaluation; Intervention; Military Duty Status; Posttraumatic Stress Disorder; Prevention. Classification: Health & Mental Health Treatment & Prevention (3300); Military Psychology (3800). Population: Human (10). Location: US. Intended Audience: Psychology: Professional & Research (PS). Tests & Measures: PTSD Checklist—Military Version (PCL-M) [Appended]; CAGE Questionnaire DOI: 10.1037/t01522-000. References Available: Y. Page Count: 30. AB - Although substance-related problems continue among uniformed personnel, significant attention has been given to reducing their impact across the military community. This chapter addresses the widespread prevention efforts under way throughout the military (e.g., zero tolerance, deglamorization campaigns, random urinalysis, and mandatory education), early intervention services (e.g., alcohol screenings and intense education), the components of a comprehensive evaluation of a possible substance or gambling disorder, and the comorbidity of substance use disorders (SUDs) and posttraumatic stress disorder (PTSD). The final section examines treatment options available for active-duty service members who experience problems with alcohol, drugs, and/or gambling (e.g., outpatient, intensive outpatient, and residential treatment). (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - substance abuse services KW - gambling treatment KW - military KW - prevention efforts KW - early intervention services KW - posttraumatic stress disorder KW - active-duty service members KW - comprehensive evaluation KW - comorbidity KW - 2012 KW - Drug Abuse KW - Drug Rehabilitation KW - Military Personnel KW - Pathological Gambling KW - Treatment KW - Comorbidity KW - Evaluation KW - Intervention KW - Military Duty Status KW - Posttraumatic Stress Disorder KW - Prevention KW - 2012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-21042-010&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2012-21042-011 AN - 2012-21042-011 AU - Palarea, Russell E. AU - Gelles, Michael G. AU - Rowe, Kirk L. ED - Kennedy, Carrie H. ED - Zillmer, Eric A. ED - Kennedy, Carrie H., (Ed) ED - Zillmer, Eric A., (Ed) T1 - Crisis and hostage negotiation. T2 - Military psychology: Clinical and operational applications, 2nd ed. Y1 - 2012/// SP - 281 EP - 305 CY - New York, NY, US PB - Guilford Press SN - 978-1-4625-0649-1 N1 - Accession Number: 2012-21042-011. Partial author list: First Author & Affiliation: Palarea, Russell E.; Operational Psychology Services, LLC, Bethesda, MD, US. Release Date: 20121008. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-1-4625-0649-1, Hardcover. Language: English. Major Descriptor: Crisis Intervention Services; Hostages; Military Psychologists; Negotiation. Classification: Military Psychology (3800). Population: Human (10). Location: US. Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 25. AB - Crisis negotiation is closely linked to the behavioral sciences and, more specifically, to psychology. Changes and developments in the field of psychology have inevitably influenced hostage negotiations. Military psychologists can provide valuable consultation to the crisis negotiation team. Across the nation, law enforcement agencies report a steady increase in the use of mental health consultants in crisis negotiations and thus a significantly higher incidence of negotiated surrenders and fewer deaths and injuries (McMains & Mullins, 2001). With the change in the world since September 11, 2001, and subsequent wars in Iraq and Afghanistan, hostages have frequently been on the forefront of media reports. Trained military consultants are in a position to provide significant assistance in both foreign and domestic situations. Psychologists can serve a fundamental role in this area and contribute directly to the optimal resolution of crises. Overall, negotiation is a means of significantly increasing the chances of peaceful resolution, and the psychological consultant provides vital assistance in the formulation of the approach to a given individual and situation. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - crisis negotiation KW - hostage negotiation KW - military psychologists KW - 2012 KW - Crisis Intervention Services KW - Hostages KW - Military Psychologists KW - Negotiation KW - 2012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-21042-011&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Schmisseur, John D. AU - Erbland, Peter T1 - Introduction: Assessment of aerothermodynamic flight prediction tools through ground and flight experimentation JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences J1 - Progress in Aerospace Sciences PY - 2012/01// Y1 - 2012/01// VL - 48-49 M3 - Article SP - 2 EP - 7 SN - 03760421 AB - Abstract: This article provides an introduction and overview to the efforts of NATO Research and Technology Organization Task Group AVT-136, Assessment of Aerothermodynamic Flight Prediction Tools through Ground and Flight Experimentation. During the period of 2006–2010, AVT-136 coordinated international contributions to assess the state-of-the-art and research challenges for the prediction of critical aerothermodynamic flight phenomena based on the extrapolation of ground test and numerical simulation. To achieve this goal, efforts were organized around six scientific topic areas: (1) Noses and leading edges, (2) Shock Interactions and Control Surfaces, (3) Shock Layers and Radiation, (4) Boundary Layer Transition, (5) Gas–Surface Interactions, and (6) Base and Afterbody Flows. A key component of the AVT-136 strategy was comparison of state-of-the-art numerical simulations with data to be acquired from planned flight research programs. Although it was recognized from the onset of AVT-136 activities that reliance on flight research data yet to be collected posed a significant risk, the group concluded the substantial benefit to be derived from comparison of computational simulations with flight data warranted pursuit of such a program of work. Unfortunately, program delays and failures in the flight programs contributing to the AVT-136 effort prevented timely access to flight research data. Despite this setback, most of the scientific topic areas developed by the Task Group made significant progress in the assessment of current capabilities. Additionally, the activities of AVT-136 generated substantial interest within the international scientific research community and the work of the Task Group was prominently featured in a total of six invited sessions in European and American technical conferences. In addition to this overview, reviews of the state-of-the-art and research challenges identified by the six research thrusts of AVT-136 are also included in this special journal edition. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROTHERMODYNAMICS KW - NORTH Atlantic Treaty Organization KW - COMPUTER simulation KW - LEADING edges (Aerodynamics) KW - RADIATION KW - BOUNDARY layer control N1 - Accession Number: 71804464; Source Information: Jan2012, Vol. 48-49, p2; Subject Term: AEROTHERMODYNAMICS; Subject Term: NORTH Atlantic Treaty Organization; Subject Term: COMPUTER simulation; Subject Term: LEADING edges (Aerodynamics); Subject Term: RADIATION; Subject Term: BOUNDARY layer control; Subject Term: ; Number of Pages: 6p; ; Document Type: Article; L3 - 10.1016/j.paerosci.2011.09.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=71804464&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Knight, Doyle AU - Longo, José AU - Drikakis, Dimitris AU - Gaitonde, Datta AU - Lani, Andrea AU - Nompelis, Ioannis AU - Reimann, Bodo AU - Walpot, Louis T1 - Assessment of CFD capability for prediction of hypersonic shock interactions JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences J1 - Progress in Aerospace Sciences PY - 2012/01// Y1 - 2012/01// VL - 48-49 M3 - Article SP - 8 EP - 26 SN - 03760421 AB - Abstract: The aerothermodynamic loadings associated with shock wave boundary layer interactions (shock interactions) must be carefully considered in the design of hypersonic air vehicles. The capability of Computational Fluid Dynamics (CFD) software to accurately predict hypersonic shock wave laminar boundary layer interactions is examined. A series of independent computations performed by researchers in the US and Europe are presented for two generic configurations (double cone and cylinder) and compared with experimental data. The results illustrate the current capabilities and limitations of modern CFD methods for these flows. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTATIONAL fluid dynamics KW - AEROTHERMODYNAMICS KW - HYPERSONIC aerodynamics KW - BOUNDARY layer control KW - SHOCK (Mechanics) KW - COMPUTER software N1 - Accession Number: 71804465; Source Information: Jan2012, Vol. 48-49, p8; Subject Term: COMPUTATIONAL fluid dynamics; Subject Term: AEROTHERMODYNAMICS; Subject Term: HYPERSONIC aerodynamics; Subject Term: BOUNDARY layer control; Subject Term: SHOCK (Mechanics); Subject Term: COMPUTER software; Subject Term: ; Number of Pages: 19p; ; Document Type: Article; L3 - 10.1016/j.paerosci.2011.10.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=71804465&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - CHAP ID - 2011-29889-031 AN - 2011-29889-031 AU - Alliger, George M. AU - Beard, Rebecca AU - Bennett, Winston Jr. AU - Colegrove, Charles M. ED - Wilson, Mark A. ED - Bennett, Winston Jr. ED - Gibson, Shanan G. ED - Alliger, George M. ED - Wilson, Mark A., (Ed) ED - Bennett, Winston Jr., (Ed) ED - Gibson, Shanan G., (Ed) ED - Alliger, George M., (Ed) T1 - Understanding mission essential competencies as a job analysis method. T2 - The handbook of work analysis: Methods, systems, applications and science of work measurement in organizations. T3 - Series in applied psychology Y1 - 2012/// SP - 603 EP - 624 CY - New York, NY, US PB - Routledge/Taylor & Francis Group SN - 978-1-84872-870-7 SN - 978-0-203-13632-4 N1 - Accession Number: 2011-29889-031. Partial author list: First Author & Affiliation: Alliger, George M.; The Group for Organizational Effectiveness, Inc., US. Release Date: 20121015. Correction Date: 20160915. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 978-1-84872-870-7, Hardcover; 978-0-203-13632-4, PDF. Language: English. Major Descriptor: Air Force Personnel; Competence; Job Analysis. Minor Descriptor: History; Methodology; Simulation. Classification: Industrial & Organizational Psychology (3600); Military Psychology (3800). Population: Human (10). Location: US. Intended Audience: Psychology: Professional & Research (PS). Tests & Measures: Managemente Position Description Questionnaire; Position Analysis Questionnaire DOI: 10.1037/t10093-000. Methodology: Quantitative Study. References Available: Y. Page Count: 22. AB - The United States Air Force Research Laboratory (AFRL), Human Effectiveness Directorate, Warfighter Readiness Research Division, in conjunction with the United States Air Force Major Command, Air Combat Command (ACC), has for a number of years pursued a program of research whose focus is the rational integration of networked flying, flying-related, and command and control simulators into current training via Distributed Mission Operations (DMO). According to the Chief of Staff of the Air Force (2003, p. 15), 'DMO is an initiative to enable full spectrum battlespace dominance in Service, Joint, and Coalition operations through integration of real, virtual (man-in-the-loop), and constructive (computer generated) capabilities, systems, and environments.' The Mission Essential Competency (MEC) job analysis methodology was developed as one facet of this DMO initiative. The MEC approach addresses multiple AFRL/ACC DMO program needs. Among other purposes, MECs enable the determination of training requirements and the appropriate mix of live operation and virtual training media, allow ACC to identify the value of DMO, provide justification for funding, and directly enable the construction of air combat simulation scenarios for which validated measures can be developed. Although much has already been written about the MECs, one particular unaddressed topic relates to the nature of this effort relative to other job analysis and competency methods. How are MECs different from other methods of work analysis? What outcomes does the MEC approach produce that are unique? Is the MEC process rigorous enough to be considered a job analysis method, as industrial/organizational psychologists understand the term? To address these questions, we take a historical-comparative approach. First, we consider the origin and nature of the competency movement. Second, we review in some detail how MECs are developed and used. Third and finally, we discuss MECs as a job analytic technique, including some thoughts on the validity of the method. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - job analysis KW - methodology KW - history: Mission Essential Competency KW - US Air Force KW - 2012 KW - Air Force Personnel KW - Competence KW - Job Analysis KW - History KW - Methodology KW - Simulation KW - 2012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-29889-031&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2011-29889-033 AN - 2011-29889-033 AU - Arthur, Winfred Jr. AU - Villado, Anton J. AU - Bennett, Winston Jr. ED - Wilson, Mark A. ED - Bennett, Winston Jr. ED - Gibson, Shanan G. ED - Alliger, George M. ED - Wilson, Mark A., (Ed) ED - Bennett, Winston Jr., (Ed) ED - Gibson, Shanan G., (Ed) ED - Alliger, George M., (Ed) T1 - Innovations in team task analysis: Identifying team-based task elements, tasks, and jobs. T2 - The handbook of work analysis: Methods, systems, applications and science of work measurement in organizations. T3 - Series in applied psychology Y1 - 2012/// SP - 641 EP - 661 CY - New York, NY, US PB - Routledge/Taylor & Francis Group SN - 978-1-84872-870-7 SN - 978-0-203-13632-4 N1 - Accession Number: 2011-29889-033. Partial author list: First Author & Affiliation: Arthur, Winfred Jr.; Texas A&M University, TX, US. Release Date: 20121015. Correction Date: 20160915. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 978-1-84872-870-7, Hardcover; 978-0-203-13632-4, PDF. Language: English. Major Descriptor: Job Analysis; Task Analysis; Work Teams. Classification: Industrial & Organizational Psychology (3600). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). Methodology: Literature Review. References Available: Y. Page Count: 21. AB - The two objectives of this chapter are to (a) present a review of the extant team task analysis literature, and (b) on the basis of this review, propose techniques and approaches on how current occupational and task analysis systems can be modified and revised to readily and effectively identify team-based tasks and their degree of team interdependency. In addition, for illustrative purposes, we present some empirical laboratory (Arthur, Edwards, Bell, Villado, & Bennett, 2005) and operational field data (Arthur et al., in press-b) on the use of three team task analysis metrics designed to quantify the extent to which tasks and jobs are team-based. These metrics resulted from the accomplishment of the second objective. The data provide initial support for the efficacy and viability of these team task analysis metrics. Finally, like traditional individual task or job analysis, information obtained from these metrics can be used for a variety of human resource functions and interventions such as training, selection, job design, and career exploration. They can also be used as diagnostic indicators and, of course, in research as well. In the present chapter, team interdependence (or 'teamness') is conceptualized and operationalized in terms of team-relatedness and team workflow. Team-relatedness represents the extent to which successful team performance requires the individual to work with members of the team to optimally perform the specified task or job. In this sense, team-relatedness can be conceptualized as representing the amount or magnitude of team interdependence or teamness. Conversely, team workflow represents the paths by which work and/or information flows through the team to optimally perform the specified tasks or job. Thus, in contrast to team-relatedness, team workflow is best conceptualized as representing or describing the type, kind, or form of team interdependence or teamness. A third metric, which we describe as the team-task-ratio, represents the ratio of the total number of tasks that constitute the job to the number of tasks that can be accomplished by one team member. This, like team-relatedness, also represents the amount or magnitude of team interdependence. These three metrics can be used to empirically and quantitatively represent the extent to which either a task or job is team-based (Arthur et al., 2005, in press-b). In this chapter, consistent with Baker and Salas (1997), our working definition of a team is two or more individuals who work interdependently, have specific role assignments, perform specific tasks, and interact and coordinate to achieve a common goal. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - task analysis KW - jobs KW - teams KW - 2012 KW - Job Analysis KW - Task Analysis KW - Work Teams KW - 2012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-29889-033&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2011-29889-037 AN - 2011-29889-037 AU - Bennett, Winston Jr. AU - Alliger, George M. AU - Wilson, Mark A. AU - Gibson, Shanan Gwaltney ED - Wilson, Mark A. ED - Bennett, Winston Jr. ED - Gibson, Shanan G. ED - Alliger, George M. ED - Wilson, Mark A., (Ed) ED - Bennett, Winston Jr., (Ed) ED - Gibson, Shanan G., (Ed) ED - Alliger, George M., (Ed) T1 - Concluding thoughts: Challenges and opportunities in work analysis. T2 - The handbook of work analysis: Methods, systems, applications and science of work measurement in organizations. T3 - Series in applied psychology Y1 - 2012/// SP - 741 EP - 747 CY - New York, NY, US PB - Routledge/Taylor & Francis Group SN - 978-1-84872-870-7 SN - 978-0-203-13632-4 N1 - Accession Number: 2011-29889-037. Partial author list: First Author & Affiliation: Bennett, Winston Jr.; United States Air Force Research Laboratory, US. Release Date: 20121015. Correction Date: 20160915. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 978-1-84872-870-7, Hardcover; 978-0-203-13632-4, PDF. Language: English. Major Descriptor: Job Analysis. Classification: Industrial & Organizational Psychology (3600). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). Tests & Measures: Position Analysis Questionnaire DOI: 10.1037/t10093-000. References Available: Y. Page Count: 7. AB - In this handbook, we have tried to accomplish a number of key activities in the area of work analysis and design. First, we crafted the new handbook to be the most complete and comprehensive treatise of the practice, science, and innovation in the field since the original Handbook of Job Analysis. Second, we gave this text a strong practice and 'how to do it' focus, but also maintained and embraced the tension between practice and the theoretical and scientific underpinnings for each approach or method. With this in mind, we organized the sections to make it easier for you to get where you want to go in the handbook quickly. Third, we identified and detailed research and practical innovation that has implications for the field both today and in the future. And finally, with this closing chapter we want to leave the reader with points to ponder related to a number of key challenges, issues, and opportunities facing the field. In this final chapter, we would like to not so much to reflect back across the entirety of the handbook itself but rather reflect on where work analysis and design as a discipline are today and where they need to go in the future. Accordingly, we describe a set of cases that represent from our perspective key challenges, new demands, or unique aspects of 21st century work that should promote discussion, identify targets of research opportunity, and hopefully help establish an agenda for research and practice. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - work analysis KW - 2012 KW - Job Analysis KW - 2012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-29889-037&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2012-04468-008 AN - 2012-04468-008 AU - Puckett, Neal A. AU - Atwood, Marcelyn ED - Laurence, Janice H. ED - Matthews, Michael D. ED - Laurence, Janice H., (Ed) ED - Matthews, Michael D., (Ed) T1 - Crime on the battlefield: Military fate or individual choice? T2 - The Oxford handbook of military psychology. T3 - Oxford library of psychology Y1 - 2012/// SP - 79 EP - 91 CY - New York, NY, US PB - Oxford University Press SN - 978-0-19-539932-5 N1 - Accession Number: 2012-04468-008. Partial author list: First Author & Affiliation: Puckett, Neal A.; United States Marine Corps, US. Release Date: 20130211. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 978-0-19-539932-5, Hardcover. Language: English. Major Descriptor: Choice Behavior; Crime; Military Psychology; Policy Making; War. Minor Descriptor: Criminal Justice; Military Personnel; Professional Standards; Terrorism. Classification: Criminal Law & Adjudication (4230); Military Psychology (3800). Population: Human (10). Location: US. Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 13. AB - The current Department of Defense global missions focused on combating terrorism would benefit from the discipline of military psychology to influence and inform the development of standard operating procedures, the management of flexible rules of engagement, and the treatment of individuals in the military justice system. Military procedures are increasingly disconnected from today's combat conditions, requiring a high level of individual situational analysis. These military procedures, the Uniform Code of Military Justice, and good order and discipline processes are increasingly in conflict with; rather than supportive of, the individual choices made when facing imminent danger. Rules of engagement, standard operating procedures, and the Uniform Code of Military Justice must rapidly adapt to the new terrorist-warfare psychological pressures that challenge good order and discipline, command responsibility, and unit cohesion. Military psychology must constantly inform, with concrete factors, the military's modification of rules of engagement, standard operating procedures, and military justice laws, policies, and procedures to be more responsive to a changing battlefield environment. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - crime KW - military KW - justice system KW - procedures KW - Uniform Code of Military Justice KW - choices KW - rules of engagement KW - standard operating procedures KW - terrorism KW - warfare KW - military psychology KW - 2012 KW - Choice Behavior KW - Crime KW - Military Psychology KW - Policy Making KW - War KW - Criminal Justice KW - Military Personnel KW - Professional Standards KW - Terrorism KW - 2012 DO - 10.1093/oxfordhb/9780195399325.013.0031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-04468-008&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Forgacs, Agnes L. AU - Kent, Michael N. AU - Makley, Meghan K. AU - Mets, Bryan AU - DelRaso, Nicholas AU - Jahns, Gary L. AU - Burgoon, Lyle D. AU - Zacharewski, Timothy R. AU - Reo, Nicholas V. T1 - Comparative Metabolomic and Genomic Analyses of TCDD-Elicited Metabolic Disruption in Mouse and Rat Liver. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 2012/01// VL - 125 IS - 1 M3 - Article SP - 41 EP - 55 PB - Oxford University Press / USA SN - 10966080 AB - 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) elicits a broad spectrum of species-specific effects that have not yet been fully characterized. This study compares the temporal effects of TCDD on hepatic aqueous and lipid metabolite extracts from immature ovariectomized C57BL/6 mice and Sprague-Dawley rats using gas chromatography-mass spectrometry and nuclear magnetic resonance–based metabolomic approaches and integrates published gene expression data to identify species-specific pathways affected by treatment. TCDD elicited metabolite and gene expression changes associated with lipid metabolism and transport, choline metabolism, bile acid metabolism, glycolysis, and glycerophospholipid metabolism. Lipid metabolism is altered in mice resulting in increased hepatic triacylglycerol as well as mono- and polyunsaturated fatty acid (FA) levels. Mouse-specific changes included the induction of CD36 and other cell surface receptors as well as lipases- and FA-binding proteins consistent with hepatic triglyceride and FA accumulation. In contrast, there was minimal hepatic fat accumulation in rats and decreased CD36 expression. However, choline metabolism was altered in rats, as indicated by decreases in betaine and increases in phosphocholine with the concomitant induction of betaine-homocysteine methyltransferase and choline kinase gene expression. Results from these studies show that aryl hydrocarbon receptor–mediated differential gene expression could be linked to metabolite changes and species-specific alterations of biochemical pathways. [ABSTRACT FROM AUTHOR] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Tetrachlorodibenzodioxin KW - Comparative studies KW - Gas chromatography KW - Metabolic disorders KW - Gene expression KW - Triglycerides KW - Rats as laboratory animals KW - dioxin KW - gene expression KW - liver KW - metabolomics N1 - Accession Number: 69899498; Forgacs, Agnes L. 1; Kent, Michael N. 2; Makley, Meghan K. 2; Mets, Bryan 1; DelRaso, Nicholas 3; Jahns, Gary L. 4; Burgoon, Lyle D. 1; Zacharewski, Timothy R. 1; Reo, Nicholas V. 2; Affiliations: 1: Department of Biochemistry and Molecular Biology, Center for Integrative Toxicology, Michigan State University, East Lansing, Michigan 48824; 2: Department of Biochemistry and Molecular Biology, Boonshoft School of Medicine, Wright State University, Dayton, Ohio 45435; 3: Air Force Research Laboratory Human Performance Wing, Wright-Patterson Air Force Base, Dayton, Ohio 45433; 4: BAE Systems, San Diego, California 92127; Issue Info: Jan2012, Vol. 125 Issue 1, p41; Thesaurus Term: Tetrachlorodibenzodioxin; Thesaurus Term: Comparative studies; Thesaurus Term: Gas chromatography; Subject Term: Metabolic disorders; Subject Term: Gene expression; Subject Term: Triglycerides; Subject Term: Rats as laboratory animals; Author-Supplied Keyword: dioxin; Author-Supplied Keyword: gene expression; Author-Supplied Keyword: liver; Author-Supplied Keyword: metabolomics; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 15p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=69899498&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2012-00189-003 AN - 2012-00189-003 AU - Alarcon, Gene M. AU - Lyons, Joseph B. AU - Schlessman, Bradley R. AU - Barelka, Alexander J. T1 - Leadership and coping among Air Force officers. JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2012/01// VL - 24 IS - 1 SP - 29 EP - 47 CY - United Kingdom PB - Taylor & Francis SN - 0899-5605 SN - 1532-7876 AD - Alarcon, Gene M., Air Force Research Laboratory, Wright Patterson Air Force Base, 2215 First Street, Building 33, OH, US, 45433-7604 N1 - Accession Number: 2012-00189-003. Partial author list: First Author & Affiliation: Alarcon, Gene M.; Air Force Research Laboratory, Wright Patterson Air Force Base, OH, US. Other Publishers: Educational Publishing Foundation; Lawrence Erlbaum. Release Date: 20120130. Correction Date: 20140714. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Coping Behavior; Leadership; Military Personnel. Classification: Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: COPE Measure; Leadership Profile Measure DOI: 10.1037/t25939-000; Multifactor Leadership Questionnaire DOI: 10.1037/t03624-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 19. Issue Publication Date: Jan, 2012. Copyright Statement: Division 19 (Society for Military Psychology) of the American Psychological Association AB - The current study explored the relationship between coping and leadership in a military sample. Data were collected from Air Force officers attending a 6-week professional military education course focusing on leadership development. Correlation analyses illustrate that leadership styles are associated with different styles of coping. Hierarchical regression further demonstrates that transformational leaders use more positive reinterpretation and problem-focused coping strategies and less emotion-focused coping strategies. Transactional leaders utilize more problem-focused coping strategies. Results also demonstrated mixed results on the relationship between transformational leadership and positive reinterpretation. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - coping behavior KW - leadership KW - military personnel KW - Air Force officers KW - 2012 KW - Air Force Personnel KW - Coping Behavior KW - Leadership KW - Military Personnel KW - 2012 DO - 10.1080/08995605.2012.639674 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-00189-003&site=ehost-live&scope=site UR - gene.alarcon@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-02318-004 AN - 2012-02318-004 AU - Shaw, Tyler AU - Finomore, Victor AU - Warm, Joel AU - Matthews, Gerald T1 - Effects of regular or irregular event schedules on cerebral hemovelocity during a sustained attention task. JF - Journal of Clinical and Experimental Neuropsychology JO - Journal of Clinical and Experimental Neuropsychology JA - J Clin Exp Neuropsychol Y1 - 2012/01// VL - 34 IS - 1 SP - 57 EP - 66 CY - United Kingdom PB - Taylor & Francis SN - 1380-3395 SN - 1744-411X AD - Shaw, Tyler, 4400 University Drive, Fairfax, VA, US, 22030 N1 - Accession Number: 2012-02318-004. PMID: 22053921 Other Journal Title: Journal of Clinical Neuropsychology. Partial author list: First Author & Affiliation: Shaw, Tyler; Human Factors and Applied Cognition, George Mason University, Fairfax, VA, US. Release Date: 20120227. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cerebral Blood Flow; Sustained Attention. Classification: Psychophysiology (2560). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Jan, 2012. Publication History: First Posted Date: Nov 4, 2011; Accepted Date: Jul 26, 2011; First Submitted Date: Jun 17, 2011. Copyright Statement: Psychology Press. 2012. AB - Transcranial Doppler sonography was used to measure bilateral cerebral blood flow velocity during sustained attention task performance where the background event schedule occurred in a synchronous (temporally regular) or asynchronous (temporally irregular) manner. Perceptual sensitivity was greater in the synchronous case and declined over time in both conditions. Blood flow velocity was greater in the more difficult asynchronous condition and declined over time in both conditions in the right hemisphere, but the decline in blood flow velocity was limited to the asynchronous condition in the left hemisphere. The results are interpreted in terms of a resource model of sustained attention. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cerebral blood flow KW - sustained attention KW - blood KW - velocity KW - regular event schedules KW - irregular event schedules KW - 2012 KW - Cerebral Blood Flow KW - Sustained Attention KW - 2012 U1 - Sponsor: US Army Medical Research and Materiel Command, Military Operational Medicine Research Program. Grant: W23RYX3106-N605. Other Details: Diagnostic Methods for Predicting Performance Impairment Associated with Combat Stress. Recipients: No recipient indicated DO - 10.1080/13803395.2011.621890 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-02318-004&site=ehost-live&scope=site UR - tshaw4@gmu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-03056-007 AN - 2012-03056-007 AU - Lawver, Timothy I. T1 - Sexuality as focus of therapy: A case study in attribution. JF - Journal of Gay & Lesbian Mental Health JO - Journal of Gay & Lesbian Mental Health JA - J Gay Lesbian Ment Health Y1 - 2012/01// VL - 16 IS - 1 SP - 66 EP - 73 CY - United Kingdom PB - Taylor & Francis SN - 1935-9705 SN - 1935-9713 AD - Lawver, Timothy I., David Grant Medical Center, 101 Bodin Circle, Travis, CA, US, 94535 N1 - Accession Number: 2012-03056-007. Other Journal Title: Journal of Gay & Lesbian Psychotherapy. Partial author list: First Author & Affiliation: Lawver, Timothy I.; David Grant Medical Center, United States Air Force, Travis Air Force Base, CA, US. Other Publishers: Haworth Press. Release Date: 20120312. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Psychotherapy; Sexual Orientation; Sexuality. Minor Descriptor: Attribution; Homosexuality; Lesbianism; Psychiatric Training; Treatment. Classification: Health & Mental Health Treatment & Prevention (3300). Population: Human (10); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Methodology: Clinical Case Study. References Available: Y. Page Count: 8. Issue Publication Date: Jan, 2012. Copyright Statement: Taylor and Francis Group, LLC. 2012. AB - The case of a patient who presented for treatment while the author was a psychiatry resident is discussed. Issues raised include treating a patient who presents her sexual orientation as the problem and how to help psychotherapists, especially trainees, become comfortable in treating gay and lesbian patients. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - sexuality KW - sexual orientation KW - treatment KW - 2012 KW - Psychotherapy KW - Sexual Orientation KW - Sexuality KW - Attribution KW - Homosexuality KW - Lesbianism KW - Psychiatric Training KW - Treatment KW - 2012 DO - 10.1080/19359705.2010.551040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-03056-007&site=ehost-live&scope=site UR - timlawver@gmail.com DP - EBSCOhost DB - psyh ER - TY - BOOK ID - 2011-29889-000 AN - 2011-29889-000 AU - Wilson, Mark A. AU - Bennett, Winston Jr. AU - Gibson, Shanan G. AU - Alliger, George M. ED - Wilson, Mark A. ED - Bennett, Winston Jr. ED - Gibson, Shanan G. ED - Alliger, George M. T1 - The handbook of work analysis: Methods, systems, applications and science of work measurement in organizations. T3 - Series in applied psychology Y1 - 2012/// CY - New York, NY, US PB - Routledge/Taylor & Francis Group SN - 978-1-84872-870-7 SN - 978-0-203-13632-4 N1 - Accession Number: 2011-29889-000. Partial author list: First Author & Affiliation: Wilson, Mark A.; North Carolina State University, NC, US. Release Date: 20121015. Correction Date: 20160915. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Book Type: Handbook/Manual. ISBN: 978-1-84872-870-7, Hardcover; 978-0-203-13632-4, PDF. Language: English. Major Descriptor: Job Analysis; Measurement; Organizations. Minor Descriptor: Experimentation; Innovation; Job Characteristics; Methodology; Systems. Classification: Industrial & Organizational Psychology (3600). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 778. AB - This new handbook, with contributions from experts around the world, is the most comprehensive treatise on work design and job analysis practice and research in over 20 years. The handbook, dedicated to Sidney Gael, is the next generation of Gael’s successful Job Analysis Handbook for Business, Industry and Government, published by Wiley in 1988. It consists of four parts: Methods, Systems, Applications and Research/Innovations. Finally, a tightly integrated, user-friendly handbook, of interest to students, practitioners and researchers in the field of Industrial Organizational Psychology and Human Resource Management. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - job analysis KW - organizations KW - work analysis KW - work measurement KW - work design KW - methods KW - systems KW - applications KW - research KW - innovation KW - 2012 KW - Job Analysis KW - Measurement KW - Organizations KW - Experimentation KW - Innovation KW - Job Characteristics KW - Methodology KW - Systems KW - 2012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-29889-000&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Modinger, John H. T1 - Harnessing the Heavens: National Defense through Space. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2011///Winter2011 Y1 - 2011///Winter2011 VL - 25 IS - 4 M3 - Book Review SP - 115 EP - 117 PB - Superintendent of Documents SN - 1555385X AB - The article reviews the book "Harnessing the Heavens: National Defense Through Space," edited by Paul G. Gillespie and Grant T. Weller. KW - HARNESSING the Heavens: National Defense Through Space (Book) KW - WELLER, Grant T. KW - GILLESPIE, Paul G. KW - MILITARY readiness KW - NONFICTION N1 - Accession Number: 71342705; Source Information: Winter2011, Vol. 25 Issue 4, p115; Subject Term: HARNESSING the Heavens: National Defense Through Space (Book); Subject Term: WELLER, Grant T.; Subject Term: GILLESPIE, Paul G.; Subject Term: MILITARY readiness; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=71342705&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Gowayed, Y. AU - Ojard, G. AU - Chen, J. AU - Morscher, G. AU - Miller, R. AU - Santhosh, U. AU - Ahmad, J. AU - John, R. T1 - Accumulation of time-dependent strain during dwell-fatigue experiments of iBN-Sylramic melt infiltrated SiC/SiC composites with and without holes JO - Composites: Part A, Applied Science & Manufacturing JF - Composites: Part A, Applied Science & Manufacturing Y1 - 2011/12// VL - 42 IS - 12 M3 - Article SP - 2020 EP - 2027 SN - 1359835X AB - Abstract: A 2h tensile load cycle is repeated for specimens without holes and specimens with a central hole under the following conditions: (i) a stress ratio of 0.05, (ii) various stress levels, (iii) 815°C and 1204°C, (iv) different times up to 600h and (v) different hole diameters. An increase in the accumulation of time-dependent strain with the increase in time and stress level is observed for specimens with and without holes. All specimens recovered part of their time-dependent strain at the minimum stress level. Residual strain to failure for specimens without holes showed a reduction with the increase in the amount of strain accumulated during the experiment. A curve fitting procedure of this experimental data, as well as data from archived literature, pointed at the possibility of the existence of a similar finite amount of strain to failure of all specimens tested at both temperatures. [Copyright &y& Elsevier] AB - Copyright of Composites: Part A, Applied Science & Manufacturing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - MATERIALS -- Fatigue KW - SILICON carbide KW - COMPOSITE materials KW - HOLES KW - METALLOGRAPHIC specimens KW - TEMPERATURE effect KW - STRENGTH of materials KW - A. Ceramic matrix composites KW - B. Creep KW - B. Fatigue KW - MI SiC/SiC N1 - Accession Number: 66946963; Gowayed, Y. 1; Email Address: gowayed@auburn.edu; Ojard, G. 2; Chen, J. 1; Morscher, G. 3; Miller, R. 2; Santhosh, U. 4; Ahmad, J. 4; John, R. 5; Affiliations: 1: Auburn University, Auburn, AL, United States; 2: Pratt & Whitney, East Hartford, CT, United States; 3: University of Akron, Akron, OH, United States; 4: Research Applications, Inc., San Diego, CA, United States; 5: Air Force Research Laboratory, AFRL/RXLM, Wright-Patterson AFB, OH, United States; Issue Info: Dec2011, Vol. 42 Issue 12, p2020; Subject Term: STRAINS & stresses (Mechanics); Subject Term: MATERIALS -- Fatigue; Subject Term: SILICON carbide; Subject Term: COMPOSITE materials; Subject Term: HOLES; Subject Term: METALLOGRAPHIC specimens; Subject Term: TEMPERATURE effect; Subject Term: STRENGTH of materials; Author-Supplied Keyword: A. Ceramic matrix composites; Author-Supplied Keyword: B. Creep; Author-Supplied Keyword: B. Fatigue; Author-Supplied Keyword: MI SiC/SiC; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.compositesa.2011.09.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=66946963&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Zeng, Zhiwei AU - Deng, Yiming AU - Liu, Xin AU - Udpa, Lalita AU - Udpa, Satish S. AU - Koltenbah, Benjamin E. C. AU - Bossi, Richard H. AU - Steffes, Gary T1 - EC-GMR Data Analysis for Inspection of Multilayer Airframe Structures. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2011/12// VL - 47 IS - 12 M3 - Article SP - 4745 EP - 4752 SN - 00189464 AB - Eddy-current testing (ECT) is widely used in inspection of multilayer aircraft skin structures for the detection of cracks under fasteners (CUF). Detection of deep hidden CUF poses a major challenge in traditional ECT techniques largely because the weak eddy-current signal due to a subsurface crack is dominated by the strong signal from the aluminum or steel fastener. Giant magnetoresistive (GMR) sensors are finding increasing applications in directly measuring weak magnetic fields associated with induced eddy currents. The measured flux image at a fastener site is in general symmetric and an asymmetry is introduced by the presence of a subsurface crack, which is used for defect detection. This paper presents novel methods that employ the resident phase information, for improving detection probability of GMR signal analysis. Using computational model, the effectiveness of the proposed methods for enhancing detection of CUF is investigated. Results demonstrating the potential of these techniques for detection of second layer CUF are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES KW - DATA analysis KW - MAGNETORESISTANCE KW - EDDY current testing KW - FASTENERS KW - MAGNETIC fields KW - FRACTURE mechanics KW - SYMMETRY (Mathematics) KW - MOTORS KW - Aircraft KW - Complex trajectory KW - Current measurement KW - detection angle KW - eddy current KW - Eddy currents KW - Fasteners KW - giant magnetoresistive sensor KW - Magnetic sensors KW - multilayer aircraft skin structure KW - nondestructive evaluation KW - Steel N1 - Accession Number: 67487700; Zeng, Zhiwei 1; Deng, Yiming 2; Liu, Xin 3; Udpa, Lalita 4; Udpa, Satish S. 4; Koltenbah, Benjamin E. C. 5; Bossi, Richard H. 6; Steffes, Gary 7; Affiliations: 1: $^{1}$Department of Aeronautics,, Xiamen University,, Xiamen, Fujian, China; 2: $^{2}$University of Colorado Denver,, Denver,, CO, USA; 3: $^{3}$ Michigan State University,, East Lansing,, MI, USA; 4: Michigan State University, East Lansing, MI, USA; 5: $^{4}$ Boeing Research & Technology,, Seattle,, WA, USA; 6: Boeing Research & Technology, Seattle, WA, USA; 7: Nondestructive Evaluation Research Branch,, $^{5}$Air Force Research Laboratory,, USA; Issue Info: Dec2011, Vol. 47 Issue 12, p4745; Thesaurus Term: AIRPLANES; Thesaurus Term: DATA analysis; Subject Term: MAGNETORESISTANCE; Subject Term: EDDY current testing; Subject Term: FASTENERS; Subject Term: MAGNETIC fields; Subject Term: FRACTURE mechanics; Subject Term: SYMMETRY (Mathematics); Subject Term: MOTORS; Author-Supplied Keyword: Aircraft; Author-Supplied Keyword: Complex trajectory; Author-Supplied Keyword: Current measurement; Author-Supplied Keyword: detection angle; Author-Supplied Keyword: eddy current; Author-Supplied Keyword: Eddy currents; Author-Supplied Keyword: Fasteners; Author-Supplied Keyword: giant magnetoresistive sensor; Author-Supplied Keyword: Magnetic sensors; Author-Supplied Keyword: multilayer aircraft skin structure; Author-Supplied Keyword: nondestructive evaluation; Author-Supplied Keyword: Steel; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 332722 Bolt, Nut, Screw, Rivet, and Washer Manufacturing; NAICS/Industry Codes: 339990 All other miscellaneous manufacturing; NAICS/Industry Codes: 339993 Fastener, Button, Needle, and Pin Manufacturing; NAICS/Industry Codes: 416330 Hardware merchant wholesalers; NAICS/Industry Codes: 423710 Hardware Merchant Wholesalers; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TMAG.2011.2160553 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=67487700&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Rizzetta, Donald P. AU - Visbal, Miguel R. T1 - Exploration of plasma-based control for low-Reynolds number airfoil/gust interaction. JO - International Journal of Computational Fluid Dynamics JF - International Journal of Computational Fluid Dynamics Y1 - 2011/12// VL - 25 IS - 10 M3 - Article SP - 509 EP - 533 SN - 10618562 AB - Large-eddy simulation (LES) is employed to investigate the use of plasma-based actuation for the control of a vortical gust interacting with a wing section at a low Reynolds number. Flow about the SD7003 airfoil section at 4° angle of attack and a chord-based Reynolds number of 60,000 is considered in the simulation, which typifies micro air vehicle (MAV) applications. Solutions are obtained to the Navier–Stokes equations that were augmented by source terms used to represent body forces imparted by the plasma actuator on the fluid. A simple phenomenological model provided these body forces resulting from the electric field generated by the plasma. The numerical method is based upon a high-fidelity time-implicit scheme and an implicit LES approach which are used to obtain solutions on a locally refined overset mesh system. A Taylor-like vortex model is employed to represent a gust impinging upon the wing surface, which causes a substantial disruption to the undisturbed flow. It is shown that the fundamental impact of the gust on unsteady aerodynamic forces is due to an inviscid process, corresponding to variation in the effective angle of attack, which is not easily overcome. Plasma control is utilised to mitigate adverse effects of the interaction and improve aerodynamic performance. Physical characteristics of the interaction are described, and several aspects of the control strategy are explored. Among these are uniform and non-uniform spanwise variations of the control configuration, co-flow and counter-flow orientations of the directed force, pulsed and continuous operations of the actuator and strength of the plasma field. Results of the control situations are compared with regard to their effect upon aerodynamic forces. It was found that disturbances to the moment coefficient produced by the gust can be greatly reduced, which may be significant for stability and handling of MAV operations. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Computational Fluid Dynamics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Reynolds number KW - Plasma (Ionized gases) KW - Aerofoils KW - Stokes equations KW - Angle of attack (Aerodynamics) KW - Aerodynamic load KW - Actuators KW - gust KW - large-eddy simulation KW - low-Reynolds number airfoil KW - plasma-flow control KW - vortex/airfoil interaction N1 - Accession Number: 67344065; Rizzetta, Donald P. 1; Email Address: Donald.Rizzetta@wpafb.af.mil; Visbal, Miguel R. 1; Affiliations: 1: Air Force Research Laboratory, Computational Aerophysics Branch, Wright-Patterson Air Force Base, USA; Issue Info: Dec2011, Vol. 25 Issue 10, p509; Subject Term: Reynolds number; Subject Term: Plasma (Ionized gases); Subject Term: Aerofoils; Subject Term: Stokes equations; Subject Term: Angle of attack (Aerodynamics); Subject Term: Aerodynamic load; Subject Term: Actuators; Author-Supplied Keyword: gust; Author-Supplied Keyword: large-eddy simulation; Author-Supplied Keyword: low-Reynolds number airfoil; Author-Supplied Keyword: plasma-flow control; Author-Supplied Keyword: vortex/airfoil interaction; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 25p; Document Type: Article L3 - 10.1080/10618562.2011.632374 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=67344065&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Huang, Danhong AU - Gumbs, Godfrey AU - Roslyak, O. T1 - Optical modulation effects on nonlinear electron transport in graphene in terahertz frequency range. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2011/12// VL - 58 IS - 21 M3 - Article SP - 1898 EP - 1907 SN - 09500340 AB - We describe very fast electron dynamics for a graphene nanoribbon driven by a control electromagnetic field in the terahertz frequency regime. The mobility as a function of bias field has been found to possess a large threshold value when entering a nonlinear transport regime. This value depends on the lattice temperature, electron density, impurity scattering strength, nanoribbon width and correlation length for the line-edge roughness. An enhanced electron mobility beyond this threshold has been observed, which is related to the initially-heated electrons in high energy states with a larger group velocity. However, this mobility enhancement quickly reaches a maximum governed by the Fermi velocity in graphene and the dramatically increased phonon scattering. Super-linear and sub-linear temperature dependences of the mobility are seen in the linear and nonlinear transport regimes, which is attributed separately to the results of sweeping electrons from the right Fermi edge to the left one through elastic scattering and moving electrons from low-energy states to high-energy ones through field-induced electron heating. The threshold field is pushed up by a decreased correlation length in the high field regime, and is further accompanied by a reduced magnitude in the mobility enhancement. This implies an anomalous high-field increase of the line-edge roughness scattering with decreasing correlation length due to the occupation of high-energy states by field-induced electron heating. Additionally, a self-consistent device modeling has been proposed for graphene transistors under an optical modulation on its gate, which employs Boltzmann moment equations up to the third-order for describing fast carrier dynamics and full wave electromagnetics coupled to the Boltzmann equation for describing spatial-temporal dependence of the total field. Finally, a detailed comparison of the derived Maxwell–Boltzmann moment equations in this paper with the well known Vlasov–Maxwell equations is also included. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON transport KW - GRAPHENE KW - SUBMILLIMETER waves KW - ELECTROMAGNETIC fields KW - TRANSPORT theory (Mathematics) KW - ELECTRON distribution KW - NANOSTRUCTURED materials KW - NONLINEAR theories KW - Boltzmann transport equation KW - graphene KW - Maxwell equation KW - moment equations KW - nanoribbon KW - optical modulation N1 - Accession Number: 69733079; Huang, Danhong 1; Email Address: danhong.huang@kirtland.af.mil; Gumbs, Godfrey 2; Roslyak, O. 2; Affiliations: 1: Air Force Research Laboratory, Space Vehicles Directorate, USA; 2: Department of Physics and Astronomy, Hunter College at the City University of New York, USA; Issue Info: Dec2011, Vol. 58 Issue 21, p1898; Subject Term: ELECTRON transport; Subject Term: GRAPHENE; Subject Term: SUBMILLIMETER waves; Subject Term: ELECTROMAGNETIC fields; Subject Term: TRANSPORT theory (Mathematics); Subject Term: ELECTRON distribution; Subject Term: NANOSTRUCTURED materials; Subject Term: NONLINEAR theories; Author-Supplied Keyword: Boltzmann transport equation; Author-Supplied Keyword: graphene; Author-Supplied Keyword: Maxwell equation; Author-Supplied Keyword: moment equations; Author-Supplied Keyword: nanoribbon; Author-Supplied Keyword: optical modulation; Number of Pages: 10p; Document Type: Article L3 - 10.1080/09500340.2011.588345 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=69733079&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Arora, Rajan AU - Petrov, Georgi I. AU - Noojin, Gary D. AU - Thomas, Patrick A. AU - Denton, Michael L. AU - Rockwell, Benjamin A. AU - Thomas, Robert J. AU - Yakovlev, Vladislav V. T1 - Detecting mineral content in turbid medium using nonlinear Raman imaging: feasibility study. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2011/12// VL - 58 IS - 21 M3 - Article SP - 1914 EP - 1921 SN - 09500340 AB - Osteoporosis is a bone disease characterized by reduced mineral content with resulting changes in bone architecture, which in turn increases the risk of bone fracture. Raman spectroscopy has an intrinsic sensitivity to the chemical content of the bone, but its application to study bones in vivo is limited due to strong optical scattering in tissue. It has been proposed that Raman excitation with photoacoustic detection can successfully address the problem of chemically specific imaging in deep tissue. In this report, the principal possibility of photoacoustic imaging for detecting mineral content is evaluated. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TURBIDITY KW - OSTEOPOROSIS KW - BONES -- Diseases KW - FRACTURES KW - RAMAN spectroscopy KW - MINERAL content of bones KW - PHOTOACOUSTIC spectroscopy KW - VITAMIN D deficiency KW - osteoporosis KW - photoacoustics KW - Raman scattering KW - stimulated Raman scattering N1 - Accession Number: 69733081; Arora, Rajan 1; Petrov, Georgi I. 1; Noojin, Gary D. 2; Thomas, Patrick A. 3; Denton, Michael L. 2; Rockwell, Benjamin A. 3; Thomas, Robert J. 3; Yakovlev, Vladislav V. 1; Email Address: yakovlev@uwm.edu; Affiliations: 1: Department of Physics, University of Wisconsin – Milwaukee, USA; 2: Biomedical Sciences and Technologies Department, TASC, Inc., USA; 3: US Air Force Research Laboratory, 711th Human Performance Wing, Human Effectiveness Directorate, Directed Energy Bioeffects Division, Optical Radiation Branch, USA; Issue Info: Dec2011, Vol. 58 Issue 21, p1914; Subject Term: TURBIDITY; Subject Term: OSTEOPOROSIS; Subject Term: BONES -- Diseases; Subject Term: FRACTURES; Subject Term: RAMAN spectroscopy; Subject Term: MINERAL content of bones; Subject Term: PHOTOACOUSTIC spectroscopy; Subject Term: VITAMIN D deficiency; Author-Supplied Keyword: osteoporosis; Author-Supplied Keyword: photoacoustics; Author-Supplied Keyword: Raman scattering; Author-Supplied Keyword: stimulated Raman scattering; Number of Pages: 8p; Document Type: Article L3 - 10.1080/09500340.2011.591507 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=69733081&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Gumbs, Godfrey AU - Roslyak, O. AU - Huang, Danhong AU - Balassis, Antonios T1 - Spectroscopic characterization of gapped graphene in the presence of circularly polarized light. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2011/12// VL - 58 IS - 21 M3 - Article SP - 1990 EP - 1996 SN - 09500340 AB - We present a description of the energy loss of a charged particle moving parallel to a graphene layer and graphene double layers. Specifically, we compare the stopping power of the plasma oscillations for these two configurations in the absence as well as the presence of circularly polarized light whose frequency and intensity can be varied to yield an energy gap of several hundred meV between the valence and conduction bands. The dressed states of the Dirac electrons by the photons yield collective plasma excitations whose characteristics are qualitatively and quantitatively different from those produced by Dirac fermions in gapless graphene, due in part to the finite effective mass of the dressed electrons. For example, the range of wave numbers for undamped self-sustaining plasmons is increased as the gap is increased, thereby increasing the stopping power of graphene for some range of charged particle velocity when graphene is radiated by circularly polarized light. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPHENE KW - SPECTRUM analysis KW - OSCILLATIONS KW - ENERGY gaps (Physics) KW - FERMIONS KW - PLASMONS (Physics) KW - CONDUCTION band KW - dressed Dirac electrons KW - electron energy loss KW - graphene KW - plasmon excitations N1 - Accession Number: 69733091; Gumbs, Godfrey 1; Roslyak, O. 1; Email Address: avroslyak@gmail.com; Huang, Danhong 2; Balassis, Antonios 3; Affiliations: 1: Department of Physics and Astronomy, Hunter College at the City University of New York, USA; 2: Air Force Research Laboratory, Space Vehicles Directorate, USA; 3: Physics Department, Fordham University, USA; Issue Info: Dec2011, Vol. 58 Issue 21, p1990; Subject Term: GRAPHENE; Subject Term: SPECTRUM analysis; Subject Term: OSCILLATIONS; Subject Term: ENERGY gaps (Physics); Subject Term: FERMIONS; Subject Term: PLASMONS (Physics); Subject Term: CONDUCTION band; Author-Supplied Keyword: dressed Dirac electrons; Author-Supplied Keyword: electron energy loss; Author-Supplied Keyword: graphene; Author-Supplied Keyword: plasmon excitations; Number of Pages: 7p; Document Type: Article L3 - 10.1080/09500340.2011.601330 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=69733091&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Parnell, Gregory S. AU - Buckley, Mark AU - Ernesto, Andrew AU - McGrath, Daniel AU - Miller, Maria T1 - Acquisition Program Information Assurance Assessment Model. JO - Military Operations Research JF - Military Operations Research J1 - Military Operations Research PY - 2011/12// Y1 - 2011/12// VL - 16 IS - 4 M3 - Article SP - 41 EP - 56 SN - 10825983 AB - The article presents a study which examines the information assurance program fro a Future Combat System (FCS) component called the Warfighter Machine Interface (WMI) in the U.S. It mentions that one of the critical missions of the Information Assurance Directorate (IAD) of the National Security Agency is to provide information assurance guidance to national security acquisition programs. It also notes that a prototype model was created to assess the information assurance status of a program. KW - SECURITY management KW - NATIONAL security KW - MILITARY missions KW - UNITED States. National Security Agency KW - UNITED States N1 - Accession Number: 73146226; Source Information: 2011, Vol. 16 Issue 4, p41; Subject Term: SECURITY management; Subject Term: NATIONAL security; Subject Term: MILITARY missions; Subject Term: UNITED States. National Security Agency; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 16p; ; Document Type: Article; L3 - 10.5711/1082598316441 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=73146226&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Proctor, Susan P. AU - Heaton, Kristin J. AU - Smith, Kristen W. AU - Rodrigues, Ema R. AU - Widing, Drew E. AU - Herrick, Robert AU - Vasterling, Jennifer J. AU - McClean, Michael D. T1 - The Occupational JP8 Exposure Neuroepidemiology Study (OJENES): Repeated workday exposure and central nervous system functioning among US Air Force personnel JO - NeuroToxicology JF - NeuroToxicology Y1 - 2011/12// VL - 32 IS - 6 M3 - Article SP - 799 EP - 808 SN - 0161813X AB - Abstract: One of the most prevalent workplace chemical exposures historically and currently confronting the global military and civilian workforce is jet propellant (JP) fuel (e.g., JP4, JP5, JP8, jet A1), a complex mixture of numerous hydrocarbon compounds and additives. To date, numerous protective and preventive strategies (e.g., federal exposure limits, workplace procedure protocols, protective gear such as goggles, respirator use, gloves, and coveralls) have been put in place to minimize acutely toxic exposure levels. However, questions remain regarding the effect of repeated exposures at lower (than regulated) levels of JP fuel. The Occupational JP8 Exposure Neuroepidemiology Study (OJENES) was designed to examine the relationships between occupational JP8 exposure over multiple, repeated workdays and specific aspects of central nervous system (CNS) functioning among Air Force (AF) personnel. In this report, we present the OJENES methodology, descriptive findings related to participant characteristics, JP8 exposure levels observed over a work week among higher and lower exposure groups, and neuropsychological task performances at the first study assessment. Results indicated minimal differences between participants in the high and lower exposure groups in terms of descriptive characteristics, other than daily JP8 exposure levels (p <0.001). In addition, neuropsychological task performances for most task measures were not found to be significantly different from reported reference ranges. These findings demonstrated that confounding and misclassification of exposure and outcome status are not major concerns for the study. Therefore, future OJENES analyses targeting the more focused research questions regarding associations between JP8 exposure and CNS functioning are likely to provide valid conclusions, as they will be less influenced by these research biases. [Copyright &y& Elsevier] AB - Copyright of NeuroToxicology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Industrial hygiene KW - PHYSIOLOGY KW - Epidemiology KW - FUEL KW - Hydrocarbons KW - Toxicology KW - Central nervous system KW - Neurons KW - Airmen KW - Jet planes KW - Neuropsychological tests KW - United States. Air Force -- Officials & employees KW - United States KW - Central nervous system KW - Exposure assessment KW - Jet fuel KW - JP8 KW - Military N1 - Accession Number: 67208442; Proctor, Susan P. 1,2,3; Email Address: sproctor@bu.edu; Heaton, Kristin J. 1,3; Smith, Kristen W. 3; Rodrigues, Ema R. 3; Widing, Drew E. 4; Herrick, Robert 5; Vasterling, Jennifer J. 6,7; McClean, Michael D. 3; Affiliations: 1: Military Performance Division, US Army Research Institute of Environmental Medicine, Kansas St., Bldg 42, Natick, MA 01760, USA; 2: Research Service, VA Boston Healthcare System, 150 South Huntington Ave., Boston, MA 02130, USA; 3: Department of Environmental Health, Boston University School of Public Health, Boston, MA 02118, USA; 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; 5: Department of Environmental Health, Harvard School of Public Health, Boston, MA 02115, USA; 6: Psychology Service, VA Boston Healthcare System, 150 South Huntington Ave., Boston, MA 02130, USA; 7: Department of Psychiatry, Boston University School of Medicine, Boston, MA 02118, USA; Issue Info: Dec2011, Vol. 32 Issue 6, p799; Thesaurus Term: Industrial hygiene; Thesaurus Term: PHYSIOLOGY; Thesaurus Term: Epidemiology; Thesaurus Term: FUEL; Thesaurus Term: Hydrocarbons; Thesaurus Term: Toxicology; Subject Term: Central nervous system; Subject Term: Neurons; Subject Term: Airmen; Subject Term: Jet planes; Subject Term: Neuropsychological tests; Subject Term: United States. Air Force -- Officials & employees; Subject: United States; Author-Supplied Keyword: Central nervous system; Author-Supplied Keyword: Exposure assessment; Author-Supplied Keyword: Jet fuel; Author-Supplied Keyword: JP8; Author-Supplied Keyword: Military; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 928110 National Security; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.neuro.2011.06.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=67208442&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Baker, Daniel N. AU - Odstrcil, Dusan AU - Anderson, Brian J. AU - Arge, C. Nick AU - Benna, Mehdi AU - Gloeckler, George AU - Korth, Haje AU - Mayer, Leslie R. AU - Raines, Jim M. AU - Schriver, David AU - Slavin, James A. AU - Solomon, Sean C. AU - Trávníček, Pavel M. AU - Zurbuchen, Thomas H. T1 - The space environment of Mercury at the times of the second and third MESSENGER flybys JO - Planetary & Space Science JF - Planetary & Space Science Y1 - 2011/12// VL - 59 IS - 15 M3 - Article SP - 2066 EP - 2074 SN - 00320633 AB - Abstract: The second and third flybys of Mercury by the MESSENGER spacecraft occurred, respectively, on 6 October 2008 and on 29 September 2009. In order to provide contextual information about the solar wind properties and the interplanetary magnetic field (IMF) near the planet at those times, we have used an empirical modeling technique combined with a numerical physics-based solar wind model. The Wang–Sheeley–Arge (WSA) method uses solar photospheric magnetic field observations (from Earth-based instruments) in order to estimate the inner heliospheric radial flow speed and radial magnetic field out to 21.5 solar radii from the Sun. This information is then used as input to the global numerical magnetohydrodynamic model, ENLIL, which calculates solar wind velocity, density, temperature, and magnetic field strength and polarity throughout the inner heliosphere. WSA-ENLIL calculations are presented for the several-week period encompassing the second and third flybys. This information, in conjunction with available MESSENGER data, aid in understanding the Mercury flyby observations and provide a basis for global magnetospheric modeling. We find that during both flybys, the solar wind conditions were very quiescent and would have provided only modest dynamic driving forces for Mercury''s magnetospheric system. [Copyright &y& Elsevier] AB - Copyright of Planetary & Space Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Space environment KW - Mercury (Planet) KW - Messenger (Space probe) KW - Cosmic magnetic fields KW - Magnetospheric physics KW - Magnetohydrodynamics KW - Heliosphere (Ionosphere) KW - Interplanetary magnetic field KW - Magnetospheres KW - Mercury KW - MESSENGER KW - Solar wind N1 - Accession Number: 69533779; Baker, Daniel N. 1; Email Address: daniel.baker@lasp.colorado.edu; Odstrcil, Dusan 2,3; Anderson, Brian J. 4; Arge, C. Nick 5; Benna, Mehdi 6; Gloeckler, George 7; Korth, Haje 4; Mayer, Leslie R. 8; Raines, Jim M. 7; Schriver, David 9; Slavin, James A. 3; Solomon, Sean C. 10; Trávníček, Pavel M. 9,11; Zurbuchen, Thomas H. 7; Affiliations: 1: Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80303, USA; 2: Computational and Data Sciences, George Mason University, Fairfax, VA 22030, USA; 3: Heliophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA; 4: The Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA; 5: Air Force Research Laboratory, Kirtland Air Force Base, NM 87117-5776, USA; 6: Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA; 7: Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI 48109, USA; 8: National Oceanic and Atmospheric Administration, Boulder, CO 80303, USA; 9: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, USA; 10: Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, DC 20015, USA; 11: Astronomical Institute and Institute of Atmospheric Physics, ASCR, 14131 Prague, Czech Republic; Issue Info: Dec2011, Vol. 59 Issue 15, p2066; Subject Term: Space environment; Subject Term: Mercury (Planet); Subject Term: Messenger (Space probe); Subject Term: Cosmic magnetic fields; Subject Term: Magnetospheric physics; Subject Term: Magnetohydrodynamics; Subject Term: Heliosphere (Ionosphere); Author-Supplied Keyword: Interplanetary magnetic field; Author-Supplied Keyword: Magnetospheres; Author-Supplied Keyword: Mercury; Author-Supplied Keyword: MESSENGER; Author-Supplied Keyword: Solar wind; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.pss.2011.01.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=69533779&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2011-21502-004 AN - 2011-21502-004 AU - Stefik, Andreas AU - Hundhausen, Christopher AU - Patterson, Robert T1 - An empirical investigation into the design of auditory cues to enhance computer program comprehension. JF - International Journal of Human-Computer Studies JO - International Journal of Human-Computer Studies JA - Int J Hum Comput Stud Y1 - 2011/12// VL - 69 IS - 12 SP - 820 EP - 838 CY - Netherlands PB - Elsevier Science SN - 1071-5819 AD - Stefik, Andreas N1 - Accession Number: 2011-21502-004. Other Journal Title: International Journal of Man-Machine Studies. Partial author list: First Author & Affiliation: Stefik, Andreas; Southern Illinois University Edwardsville, Department of Computer Science, Edwardsville, IL, US. Release Date: 20111024. Correction Date: 20120618. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Auditory Stimulation; Comprehension; Computer Assisted Design; Computer Software; Cues. Minor Descriptor: Lexical Access. Classification: Human Factors Engineering (4010). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 19. Issue Publication Date: Dec, 2011. Publication History: First Posted Date: Jul 18, 2011; Accepted Date: Jul 7, 2011; Revised Date: Apr 18, 2011; First Submitted Date: Jul 26, 2010. Copyright Statement: All rights reserved. Elsevier Ltd. 2011. AB - Decades of research have led to notable improvements in the representations used to aid human comprehension of computer programs. Much of this research has focused on visual representations, which leaves open the question of how best to design auditory representations of computer programs. While this question has particular relevance for visually impaired programmers, sighted programmers might also benefit from enhanced auditory representations of their programs. In order to investigate this question empirically, first, we introduce artifact encoding, a novel approach to rigorously measuring the comprehensibility of auditory representations of computer programs. Using this approach as a foundation, we present an experimental study that compared the comprehensibility of two alternative auditory program representations: one with lexical scoping cues that convey the nesting level of program statements, and another without such scoping cues. The results of our first experiment validate both artifact encoding and the scoping cues we used. To see whether auditory cues validated through our paradigm can aid program comprehension in a realistic task scenario, we experimentally compared programmers’ ability to debug programs using three alternative environments: (1) an auditory execution environment with our empirically derived auditory cues; (2) an auditory execution environment with the current state-of-the-art auditory cues generated by a screen reader running on top of Microsoft Visual Studio; and (3) a visual version of the execution environment. The results of our second experiment showed that our comprehensible auditory cues are significantly better than the state-of-the-art, affording human performance approaching the effectiveness of visual representations within the statistical margin of error. This research contributes a novel methodology and foundational empirical data that can guide the design of effective auditory representations of computer programs. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - auditory cues KW - computer program comprehension KW - lexical scoping cues KW - computer assisted design KW - 2011 KW - Auditory Stimulation KW - Comprehension KW - Computer Assisted Design KW - Computer Software KW - Cues KW - Lexical Access KW - 2011 U1 - Sponsor: National Science Foundation. Grant: CNS-0940521. Recipients: No recipient indicated U1 - Sponsor: Washington State University, School of Electrical Engineering and Computer Science, US. Recipients: No recipient indicated DO - 10.1016/j.ijhcs.2011.07.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-21502-004&site=ehost-live&scope=site UR - stefika@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-28552-005 AN - 2011-28552-005 AU - Woodrow, Andrew D. AU - Webb, James T. AU - Wier, Grady S. T1 - Recollection of hypoxia symptoms between training events. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2011/12// VL - 82 IS - 12 SP - 1143 EP - 1147 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Woodrow, Andrew D., 19301 McGregor St., Beale AFB, CA, US, 95903 N1 - Accession Number: 2011-28552-005. PMID: 22195396 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Woodrow, Andrew D.; United States Air Force School of Aerospace Medicine, Brooks City-Base, TX, US. Release Date: 20120514. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Anoxia; Fatigue; Mental Disorders; Military Training; Vision Disorders. Classification: Physical & Somatoform & Psychogenic Disorders (3290). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 5. Issue Publication Date: Dec, 2011. Copyright Statement: Aerospace Medical Association, Alexandria, VA. AB - Introduction: The well-established technique of mask-off hypoxia training in a hypobaric training environment elicits symptoms that are correlated with in-flight symptoms reported by aircrew. Aircrew receive training on recognition of symptoms and response early in their flying career and accomplish refresher training on a 5-yr cycle. The symptoms reported after acute hypoxia represent cognitive and psychomotor impairment. The purpose of this study was to evaluate the correlation of symptoms experienced during hypoxia training and recall of symptoms S from the training sessions 5 yr previously. Methods: A survey listing 18 symptoms of hypoxia and severity of condition was presented to 1123 aircrew attending refresher training at 10 U.S. Air Force Aerospace Physiology Training Units prior to and immediately following hypoxia training in the hypobaric chamber. Results: The five symptoms most commonly reported following hypoxia training are: lightheaded/dizzy, dizziness, mental confusion, visual impairment, and tingling. The hypoxia symptom 'lightheaded/dizzy' recorded the highest frequency of all 18 symptoms. Lightheaded/dizzy frequencies for both previous and current hypoxia training were 67.2% and 72.3%, respectively. This symptom remained consistent throughout all data analysis, retaining the highest frequency in all levels of severity (mild, moderate, and extreme) for both the previous hypoxia training and current hypoxia training. Discussion: The similarity of symptoms recalled between hypoxia training events provides strong evidence that hypoxia training is an effective method of establishing recognized decrements that may influence performance in flight. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - hypoxia training KW - visual impairment KW - mental disorders KW - fatigue KW - 2011 KW - Anoxia KW - Fatigue KW - Mental Disorders KW - Military Training KW - Vision Disorders KW - 2011 DO - 10.3357/ASEM.2987.2011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-28552-005&site=ehost-live&scope=site UR - andrew.woodrow@beale.af.mil DP - EBSCOhost DB - psyh ER - TY - GEN AU - Carter Leake, F. T1 - Aerostructure Demand Rises Along Commercial Aircraft Production. JO - Wall Street Transcript JF - Wall Street Transcript Y1 - 2011/11/14/ VL - 188 IS - 10 M3 - Interview SP - 13 EP - 16 SN - 00430102 AB - An interview with F. Carter Leake, senior vice president and senior equity research analyst at BB&T Capital Markets, is presented. When asked on the low expectations on 787 aircraft from Boeing Co., he says that the low expectations on the aircraft are caused by the near-continuous three-year negative news flow. He believes that the attitude of investors toward Boeing is somewhat confused. He recommends Spirit AeroSystems Inc. and BE Aerospace Inc. to investors. KW - BUSINESS analysts KW - CAPITALISTS & financiers KW - BOEING 787 Dreamliner (Jet transport) KW - BB & T Capital Markets (Company) KW - BOEING Co. KW - SPIRIT AeroSystems Inc. KW - LEAKE, F. Carter -- Interviews N1 - Accession Number: 69646115; Carter Leake, F. 1,2,3,4; Affiliations: 1: United States Air Force Pilot, U. S.; 2: Economics, University of Virginia, U. S.; 3: Master's, Aeronautical Science, Embry-Riddle Aeronautical University, U. S.; 4: Equity Research, BB&T Capital Markets 901 E. Byrd St. Riverfront Plaza West Richmond, VA 23219 , U. S.; Issue Info: 11/14/2011, Vol. 188 Issue 10, p13; Thesaurus Term: BUSINESS analysts; Thesaurus Term: CAPITALISTS & financiers; Subject Term: BOEING 787 Dreamliner (Jet transport) ; Company/Entity: BB & T Capital Markets (Company) ; Company/Entity: BOEING Co. DUNS Number: 009256819 Ticker: BA ; Company/Entity: SPIRIT AeroSystems Inc.; People: LEAKE, F. Carter -- Interviews; Number of Pages: 4p; Document Type: Interview UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=69646115&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Wisman, David AU - Ganguly, Biswa T1 - Flame-Front Visualization Using Argon–Oxygen Plasma Discharge. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2011/11/03/Nov2011 Part 1 Part 1 Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2066 EP - 2067 SN - 00933813 AB - The emission from a pulsed point-to-plane corona discharge is used to image flame reaction zones with high temporal resolution. An \Ar\/O2 gas mixture is used as an oxidant, allowing for the initiation of the corona discharge at lower applied voltages than it is possible in an air discharge while maintaining similar pulsed plasma current. The lower operating voltages reduce the amount of random streamer strikes and thus increase the clarity of the plasma emission images. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARGON KW - GLOW discharges KW - PLASMA (Ionized gases) KW - EMISSIONS (Air pollution) KW - FLOW visualization KW - GAS flow KW - COMBUSTION N1 - Accession Number: 67086389; Source Information: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2066; Subject Term: ARGON; Subject Term: GLOW discharges; Subject Term: PLASMA (Ionized gases); Subject Term: EMISSIONS (Air pollution); Subject Term: FLOW visualization; Subject Term: GAS flow; Subject Term: COMBUSTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Article; L3 - 10.1109/TPS.2011.2138165 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=67086389&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - McHarg, Matthew G. AU - Stenbaek-Nielsen, Hans C. AU - Kanmae, Takeshi AU - Haaland, Ryan K. T1 - High-Speed Imaging of Sprite Streamers. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2011/11/03/Nov2011 Part 1 Part 1 Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2266 EP - 2267 SN - 00933813 AB - The spatial and temporal developments of sprite streamers in the mesosphere are discussed in the context of the data recorded on August 27, 2009. Streamers initiate at approximately 75 km in altitude and are seen to propagate first downward and subsequently upward. Streamer splitting is observed as the streamers propagate. The streamer tips are approximately three times brighter than the planet Jupiter. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA stability KW - MESOSPHERE KW - STREAMING technology (Telecommunications) KW - PLASMA diagnostics KW - APPROXIMATION theory KW - LIGHTNING KW - GEOPHYSICS KW - MEASUREMENT KW - JUPITER (Planet) N1 - Accession Number: 67086801; Source Information: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2266; Subject Term: PLASMA stability; Subject Term: MESOSPHERE; Subject Term: STREAMING technology (Telecommunications); Subject Term: PLASMA diagnostics; Subject Term: APPROXIMATION theory; Subject Term: LIGHTNING; Subject Term: GEOPHYSICS; Subject Term: MEASUREMENT; Subject Term: JUPITER (Planet); Subject Term: ; Number of Pages: 2p; ; Document Type: Article; L3 - 10.1109/TPS.2011.2165299 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=67086801&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kuo, Spencer P. AU - Pedersen, Todd AU - Mills, Travis T1 - Two-Dimensional Distribution of Atomic-Oxygen Multiplet Radiation Produced by an Air-Plasma Torch. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2011/11/03/Nov2011 Part 1 Part 1 Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2282 EP - 2283 SN - 00933813 AB - A pen-size low-temperature air-plasma torch is designed for dental applications. A narrow-band-filtered charge-coupled-device camera is used to record the 2-D distribution of the intensities of 777.4-nm emissions from the 5P state of atomic oxygen produced in the plasma effluent of the torch. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA jets KW - OXYGEN KW - RADIATION KW - TEMPERATURE control KW - PLASMA (Ionized gases) KW - PLASMA dynamics KW - AIRCRAFT exhaust emissions N1 - Accession Number: 67086550; Source Information: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2282; Subject Term: PLASMA jets; Subject Term: OXYGEN; Subject Term: RADIATION; Subject Term: TEMPERATURE control; Subject Term: PLASMA (Ionized gases); Subject Term: PLASMA dynamics; Subject Term: AIRCRAFT exhaust emissions; Subject Term: ; Number of Pages: 2p; ; Document Type: Article; L3 - 10.1109/TPS.2011.2155089 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=67086550&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Urabe, Keiichiro AU - Sands, Brian L. AU - Sakai, Osamu AU - Ganguly, Biswa N. T1 - Temporally Resolved Imaging of Jet-Type Dielectric Barrier Discharge Using He and Ar/Acetone Crossed Gas Flows. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2011/11/03/Nov2011 Part 1 Part 1 Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2294 EP - 2295 SN - 00933813 AB - We report on temporally resolved images in a jet-type dielectric barrier discharge with two crossed gas flows obtained by a spectrally filtered intensified charge-coupled device (ICCD) camera. The crossed-flow configuration of He and Ar gases and a small acetone impurity added into the Ar flow simulated a discharge configuration and an organic precursor used for the practical application of material processing, respectively. From the ICCD images, streamer and transient glow discharges could be distinguished between the electrode and the substrate. Filtered emission from excited \N2^{+}, CH, \C2, He, and Ar also revealed the excitation and decomposition processes in the discharge. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GLOW discharges KW - GAS flow KW - ACETONE KW - ELECTRODES KW - DECOMPOSITION (Chemistry) KW - PLASMA (Ionized gases) KW - ELECTRON tubes N1 - Accession Number: 67086329; Source Information: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2294; Subject Term: GLOW discharges; Subject Term: GAS flow; Subject Term: ACETONE; Subject Term: ELECTRODES; Subject Term: DECOMPOSITION (Chemistry); Subject Term: PLASMA (Ionized gases); Subject Term: ELECTRON tubes; Subject Term: ; Number of Pages: 2p; ; Document Type: Article; L3 - 10.1109/TPS.2011.2111389 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=67086329&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Leiweke, Robert J. AU - Sands, Brian L. AU - Ganguly, Biswa N. T1 - Effect of Gas Mixture on Plasma Jet Discharge Morphology. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2011/11/03/Nov2011 Part 1 Part 1 Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2304 EP - 2305 SN - 00933813 AB - The morphology of plasma emission from a streamerlike atmospheric pressure plasma jet initiated inside a glass capillary has been measured with a high spatial resolution for a gas flow of pure helium and He with a 5% Ar admixture using 5-ns time-gated intensified charge-coupled device imaging. In the pure helium plasma jet, emission remains annular and converges gradually along the core gas–air interface. With a 5% argon admixture, however, the plasma emission is initially annular inside the glass capillary but converges to the flow axis within 5 mm outside the capillary tip. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS mixtures KW - PLASMA jets KW - GLOW discharges KW - INDUCTIVELY coupled plasma atomic emission spectrometry KW - ATMOSPHERIC pressure KW - ARGON plasmas N1 - Accession Number: 67086393; Source Information: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2304; Subject Term: GAS mixtures; Subject Term: PLASMA jets; Subject Term: GLOW discharges; Subject Term: INDUCTIVELY coupled plasma atomic emission spectrometry; Subject Term: ATMOSPHERIC pressure; Subject Term: ARGON plasmas; Subject Term: ; Number of Pages: 2p; ; Document Type: Article; L3 - 10.1109/TPS.2011.2139228 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=67086393&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Rao, Xing AU - Hammack, Stephen AU - Carter, Campbell AU - Lee, Tonghun T1 - Laser Diagnostic Imaging of Energetically Enhanced Flames Using Direct Microwave Plasma Coupling. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2011/11/03/Nov2011 Part 1 Part 1 Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2354 EP - 2355 SN - 00933813 AB - Quantitative images of temperature and hydroxyl (OH) concentrations are presented in plasma-enhanced flames, where a nonthermal microwave plasma discharge is coupled directly with the reaction zone of the flame. The plasma jet is generated through a novel microwave (2.45 GHz) waveguide based a coaxial reactor system. Planar laser-induced fluorescence is used to generate the OH fields, and planar Rayleigh scattering thermometry is used for the temperature. Plasma-enhanced flames present new possibilities for ignition and flame holding under harsh operating conditions, including stabilization of combustion in hypersonic flame conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER beams KW - FLUORESCENCE KW - MICROWAVE plasmas KW - RAYLEIGH scattering KW - MASERS KW - MICROWAVE imaging KW - NONEQUILIBRIUM plasmas KW - COMBUSTION gases KW - PLASMA jets N1 - Accession Number: 67086436; Source Information: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2354; Subject Term: LASER beams; Subject Term: FLUORESCENCE; Subject Term: MICROWAVE plasmas; Subject Term: RAYLEIGH scattering; Subject Term: MASERS; Subject Term: MICROWAVE imaging; Subject Term: NONEQUILIBRIUM plasmas; Subject Term: COMBUSTION gases; Subject Term: PLASMA jets; Subject Term: ; Number of Pages: 2p; ; Document Type: Article; L3 - 10.1109/TPS.2011.2148180 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=67086436&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Pedersen, Todd R. AU - Holmes, Jeffrey M. AU - Gustavsson, Bjorn AU - Mills, Travis J. T1 - Multisite Optical Imaging of Artificial Ionospheric Plasmas. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2011/11/03/Nov2011 Part 1 Part 1 Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2704 EP - 2705 SN - 00933813 AB - Artificial ionospheric plasmas are formed on the bottom side of the natural ionospheric F region during high-power high-frequency (HF) heating experiments and descend to altitudes as low as 140 km before disappearing. Optical emissions produced during these events often exhibit bull's-eye structures, where the artificial plasma is thought to form a central spot that diverts or blocks HF waves to form an empty ring of emissions from the natural ionosphere at higher altitudes. We present multisite image data showing that, in some cases, both the spot and ring represent distinct artificial plasma layers. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL detectors KW - PLASMA (Ionized gases) KW - PLASMA density KW - F region KW - INDUCTION heating KW - HAFNIUM KW - UPPER atmosphere KW - ALTITUDES KW - PIXELS N1 - Accession Number: 67086461; Source Information: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2704; Subject Term: OPTICAL detectors; Subject Term: PLASMA (Ionized gases); Subject Term: PLASMA density; Subject Term: F region; Subject Term: INDUCTION heating; Subject Term: HAFNIUM; Subject Term: UPPER atmosphere; Subject Term: ALTITUDES; Subject Term: PIXELS; Subject Term: ; Number of Pages: 2p; ; Document Type: Article; L3 - 10.1109/TPS.2011.2151209 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=67086461&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Liu, Ningyu AU - Pasko, Victor P. AU - Stenbaek-Nielsen, Hans C. AU - McHarg, Matthew G. T1 - Sprite Streamers Imaged at Different Exposure Times. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2011/11/03/Nov2011 Part 1 Part 1 Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2710 EP - 2711 SN - 00933813 AB - This paper investigates the appearance of sprite streamer discharges imaged at different exposure times. Both observational and modeling results are presented to illustrate that the formation of luminous filamentary channels in sprites is caused by bright and fast-moving sprite streamer heads. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STREAMING technology (Telecommunications) KW - ATMOSPHERIC models KW - ACCELERATION (Mechanics) KW - ELECTRIC discharges KW - IMAGING systems KW - OPTICS KW - ELECTROSTATICS N1 - Accession Number: 67086641; Source Information: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2710; Subject Term: STREAMING technology (Telecommunications); Subject Term: ATMOSPHERIC models; Subject Term: ACCELERATION (Mechanics); Subject Term: ELECTRIC discharges; Subject Term: IMAGING systems; Subject Term: OPTICS; Subject Term: ELECTROSTATICS; Subject Term: ; Number of Pages: 2p; ; Document Type: Article; L3 - 10.1109/TPS.2011.2159517 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=67086641&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Holmes, Jeffrey M. AU - Pedersen, Todd R. AU - Mills, Travis J. T1 - RF-Induced Airglow Observed Using Composite Multispectral Imaging. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2011/11/03/Nov2011 Part 1 Part 1 Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2714 EP - 2715 SN - 00933813 AB - Atmospheric airglow emissions accompanying artificial ionospheric plasmas occur when the bottom-side ionospheric F-region is exposed to high-power HF heating. These artificial emissions are spectrally similar to those which occur naturally as airglow and aurora, yet they have spatiotemporal behavior commensurate with the heater beam geometry. Interesting dynamics of both the artificial plasma layers and optical emissions have been observed, namely, the presence of multiple descending plasma layers distributed in altitude, mesoscale (10–100 km) bullseye-type airglow emission patterns, and, finally, small-scale (\lesssim 10 km) field-aligned filaments. We present visualizations of such features exhibited by the heated region using composite multispectral imaging. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRGLOW KW - GREEN products KW - OPTICAL images KW - PLASMA density KW - IONOSPHERE KW - DYNAMICS KW - IMAGING systems N1 - Accession Number: 67086690; Source Information: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2714; Subject Term: AIRGLOW; Subject Term: GREEN products; Subject Term: OPTICAL images; Subject Term: PLASMA density; Subject Term: IONOSPHERE; Subject Term: DYNAMICS; Subject Term: IMAGING systems; Subject Term: ; Number of Pages: 2p; ; Document Type: Article; L3 - 10.1109/TPS.2011.2158854 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=67086690&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Bernhardt, P. A. AU - Baumgardner, J. B. AU - Bhatt, A. N. AU - Erickson, P. J. AU - Larsen, M. F. AU - Pedersen, T. R. AU - Siefring, C. L. T1 - Optical Emissions Observed During the Charged Aerosol Release Experiment (CARE I) in the Ionosphere. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2011/11/03/Nov2011 Part 1 Part 1 Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2774 EP - 2775 SN - 00933813 AB - The in-flight engine firing of solid rocket motors in the ionosphere produces an artificial dusty plasma. Optical emissions of sunlight scattered from the dust particles yield measurements of the dust location and flow velocities. Charging by ambient ionospheric electrons of the particulates yields dust particles that stream across the magnetic field lines. These exhaust particles initiate plasma turbulence in the ionosphere that can scatter radar waves. If the exhaust cloud itself passes over in situ particle or plasma wave detectors, measurements can be made of increased dusty plasma wave turbulence and plasma densities. To demonstrate long-range detection of rocket engine burns in the ionosphere, the Charged Aerosol Release Experiment (CARE I) was conducted in September 2009. Optical observations from CARE I provided measurements of both the dust particle distributions and the interactions of the molecular component of the rocket exhaust in the ionosphere. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROSOLS (Sprays) KW - IONOSPHERE KW - DUSTY plasmas KW - PHYSICS experiments KW - ROCKETS (Aeronautics) KW - RADAR KW - SCATTERING (Physics) KW - CLOUDS N1 - Accession Number: 67086777; Source Information: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2774; Subject Term: AEROSOLS (Sprays); Subject Term: IONOSPHERE; Subject Term: DUSTY plasmas; Subject Term: PHYSICS experiments; Subject Term: ROCKETS (Aeronautics); Subject Term: RADAR; Subject Term: SCATTERING (Physics); Subject Term: CLOUDS; Subject Term: ; Number of Pages: 2p; ; Document Type: Article; L3 - 10.1109/TPS.2011.2164944 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=67086777&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Hargus, William A. T1 - Laser-Induced-Fluorescence-Derived Hall Effect Thruster Ion Velocity Distribution Visualization. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2011/11/03/Nov2011 Part 1 Part 1 Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2918 EP - 2919 SN - 00933813 AB - Laser-induced fluorescence is used to measure ion velocity distributions in a Hall effect thruster plume. Images of ion velocity scaled to fluorescence peak magnitude provide a graphical illustration of the complex interactions between accelerated ion populations. Both axial and radial velocities are sampled at a single cross section approximately 0.6 diameters downstream of the thruster exit. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HALL effect devices KW - COLLOID thrusters KW - FLUORESCENCE spectroscopy KW - CROSS-sectional method KW - SPACE flight propulsion systems KW - DIAMETER (Geometry) N1 - Accession Number: 67086367; Source Information: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2918; Subject Term: HALL effect devices; Subject Term: COLLOID thrusters; Subject Term: FLUORESCENCE spectroscopy; Subject Term: CROSS-sectional method; Subject Term: SPACE flight propulsion systems; Subject Term: DIAMETER (Geometry); Subject Term: ; Number of Pages: 2p; ; Document Type: Article; L3 - 10.1109/TPS.2011.2132149 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=67086367&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Liu, David AU - Huffman, Richard E. AU - Branam, Richard D. AU - Hargus, William A. T1 - Ultrahigh-Speed Imaging of Hall-Thruster Discharge Oscillations With Krypton Propellant. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2011/11/03/Nov2011 Part 1 Part 1 Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2926 EP - 2927 SN - 00933813 AB - The discharge oscillations of a 200-W Hall thruster, with krypton propellant, was captured optically with an ultrahigh-speed camera providing information up to 500 kHz. The sequential images provide a temporal 2-D description of the plasma field, which illustrate the direct emission (i.e., visible light emitted by the plasma discharge) of the plasma increasing and decreasing within the thruster channel. These periodic fluctuations of intensity have a frequency of 31 kHz, which is 10% less than the measured breathing-mode frequency utilizing xenon propellant under the same conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH-speed photography KW - KRYPTON KW - PROPELLANTS KW - PLASMA oscillations KW - GLOW discharges KW - FLUCTUATIONS (Physics) KW - PLASMA instabilities KW - FREQUENCIES of oscillating systems -- Measurement N1 - Accession Number: 67086479; Source Information: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2926; Subject Term: HIGH-speed photography; Subject Term: KRYPTON; Subject Term: PROPELLANTS; Subject Term: PLASMA oscillations; Subject Term: GLOW discharges; Subject Term: FLUCTUATIONS (Physics); Subject Term: PLASMA instabilities; Subject Term: FREQUENCIES of oscillating systems -- Measurement; Subject Term: ; Number of Pages: 2p; ; Document Type: Article; L3 - 10.1109/TPS.2011.2146282 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=67086479&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Luckarift, Heather R. AU - Sizemore, Susan R. AU - Farrington, Karen E. AU - Fulmer, Preston A. AU - Biffinger, Justin C. AU - Nadeau, Lloyd J. AU - Johnson, Glenn R. T1 - Biodegradation of medium chain hydrocarbons by Acinetobacter venetianus 2AW immobilized to hair-based adsorbent mats. JO - Biotechnology Progress JF - Biotechnology Progress Y1 - 2011/11// VL - 27 IS - 6 M3 - Article SP - 1580 EP - 1587 PB - Wiley-Blackwell SN - 87567938 AB - The natural attenuation of hydrocarbons can be hindered by their rapid dispersion in the environment and limited contact with bacteria capable of oxidizing hydrocarbons. A functionalized composite material is described herein, that combines in situ immobilized alkane-degrading bacteria with an adsorbent material that collects hydrocarbon substrates, and facilitates biodegradation by the immobilized bacterial population. Acinetobacter venetianus 2AW was isolated for its ability to utilize hydrophobic n-alkanes (C10-C18) as the sole carbon and energy source. Growth of strain 2AW also resulted in the production of a biosurfactant that aided in the dispersion of complex mixtures of hydrophobic compounds. Effective immobilization of strain 2AW to the surface of Ottimat™ adsorbent hair mats via vapor phase deposition of silica provided a stable and reproducible biocatalyst population that facilitates in situ biodegradation of n-alkanes. Silica-immobilized strain 2AW demonstrated ca. 85% removal of 1% (v/v) tetradecane and hexadecane within 24 h, under continuous flow conditions. The methodology for immobilizing whole bacterial cells at the surface of an adsorbent, for in situ degradation of hydrocarbons, has practical application in the bioremediation of oil in water emulsions. Published 2011 American Institute of Chemical Engineers Biotechnol Prog., 2011 [ABSTRACT FROM AUTHOR] AB - Copyright of Biotechnology Progress is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Hydrocarbons KW - Bacterial cells KW - Alkanes KW - Acinetobacter KW - Hydrophobic compounds KW - Tetradecane N1 - Accession Number: 67612211; Luckarift, Heather R. 1,2; Sizemore, Susan R. 1,2; Farrington, Karen E. 1,2; Fulmer, Preston A. 3; Biffinger, Justin C. 3; Nadeau, Lloyd J. 2; Johnson, Glenn R. 2; Affiliations: 1: Universal Technology Corporation, Dayton, OH 45432; 2: Airbase Technologies Division, Air Force Research Laboratory, Tyndall Air Force Base, FL 32403; 3: Chemistry Division, Naval Research Laboratory, Washington, DC 20375; Issue Info: Nov2011, Vol. 27 Issue 6, p1580; Thesaurus Term: Hydrocarbons; Thesaurus Term: Bacterial cells; Thesaurus Term: Alkanes; Subject Term: Acinetobacter; Subject Term: Hydrophobic compounds; Subject Term: Tetradecane; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; Number of Pages: 8p; Document Type: Article L3 - 10.1002/btpr.701 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=67612211&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Phillips, David M. AU - Ryan Pierce, M. AU - Baur, Jeffery W. T1 - Mechanical and thermal analysis of microvascular networks in structural composite panels JO - Composites: Part A, Applied Science & Manufacturing JF - Composites: Part A, Applied Science & Manufacturing Y1 - 2011/11// VL - 42 IS - 11 M3 - Article SP - 1609 EP - 1619 SN - 1359835X AB - Abstract: Aerospace-grade, quasi-isotropic composite laminate panels of IM7/977-2 carbon fiber/epoxy prepreg are cured in an autoclave with microvascular channels. The channels are created both with a stainless steel tube insert and a removable mandrel to create lined and unlined passages, respectively. The interlaminar fracture toughness is examined as a function of the channel diameter and orientation to the adjacent, unidirectional fiber plies in a double cantilever beam test. The channels allow for a heat exchange fluid to flow through the composites and facilitate thermal transport. Thermography is used to examine the steady state surface temperature profiles of the horizontally oriented panels operating with internal fluid flow and external natural convection. A two-dimensional, analytic model was developed for the surface temperature profiles to understand the thermal transport within the specimens. The framework for the design and operation of multi-channel systems is established and a case study for surface temperature control is examined. [Copyright &y& Elsevier] AB - Copyright of Composites: Part A, Applied Science & Manufacturing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAMINATED materials KW - THERMAL analysis KW - CARBON fibers KW - MATERIALS -- Mechanical properties KW - STEEL tubes KW - HYBRID systems KW - FRACTURE mechanics KW - A. Hybrid KW - C. Analytical modeling KW - D. Mechanical testing KW - D. Thermal analysis N1 - Accession Number: 66234924; Phillips, David M. 1,2; Email Address: david.phillips.ctr@wpafb.af.mil; Ryan Pierce, M. 1,3; Baur, Jeffery W. 1; Affiliations: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright-Patterson Air Force Base, OH 45433, United States; 2: Universal Technology Corporation, 1270 North Fairfield Road, Dayton, OH 45432, United States; 3: Department of Chemical & Materials Engineering, University of Dayton, Dayton, OH 45469-0246, United States; Issue Info: Nov2011, Vol. 42 Issue 11, p1609; Subject Term: LAMINATED materials; Subject Term: THERMAL analysis; Subject Term: CARBON fibers; Subject Term: MATERIALS -- Mechanical properties; Subject Term: STEEL tubes; Subject Term: HYBRID systems; Subject Term: FRACTURE mechanics; Author-Supplied Keyword: A. Hybrid; Author-Supplied Keyword: C. Analytical modeling; Author-Supplied Keyword: D. Mechanical testing; Author-Supplied Keyword: D. Thermal analysis; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331210 Iron and Steel Pipe and Tube Manufacturing from Purchased Steel; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.compositesa.2011.07.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=66234924&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Bohn, Matthew J. AU - Guiney, William AU - Lynch, Candace AU - Bliss, David F. T1 - Spectral Evidence of Si Complexes in HVPE-Grown GaAs. JO - IEEE Transactions on Semiconductor Manufacturing JF - IEEE Transactions on Semiconductor Manufacturing J1 - IEEE Transactions on Semiconductor Manufacturing PY - 2011/11// Y1 - 2011/11// VL - 24 IS - 4 M3 - Article SP - 519 EP - 522 SN - 08946507 AB - Evidence of Si complexes was discovered in low temperature photoluminescence (PL) spectra recorded from GaAs grown by hydride vapor phase epitaxy and were measured as a function of secondary HCl flow. In addition, time resolved PL of the samples measured long radiative lifetimes, substantiating the excellent quality of the crystalline growth. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Semiconductor Manufacturing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON compounds KW - METAL complexes KW - GALLIUM arsenide KW - CRYSTAL growth KW - LOW temperatures KW - PHOTOLUMINESCENCE KW - EPITAXY N1 - Accession Number: 66964493; Source Information: Nov2011, Vol. 24 Issue 4, p519; Subject Term: SILICON compounds; Subject Term: METAL complexes; Subject Term: GALLIUM arsenide; Subject Term: CRYSTAL growth; Subject Term: LOW temperatures; Subject Term: PHOTOLUMINESCENCE; Subject Term: EPITAXY; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1109/TSM.2011.2160300 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=66964493&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Tang, Jinshan AU - Liu, Xiaoming AU - Cheng, Huaining AU - Robinette, Kathleen M. T1 - Gender Recognition Using 3-D Human Body Shapes. JO - IEEE Transactions on Systems, Man & Cybernetics: Part C - Applications & Reviews JF - IEEE Transactions on Systems, Man & Cybernetics: Part C - Applications & Reviews J1 - IEEE Transactions on Systems, Man & Cybernetics: Part C - Applications & Reviews PY - 2011/11// Y1 - 2011/11// VL - 41 IS - 6 M3 - Article SP - 898 EP - 908 SN - 10946977 AB - Gender recognition has important applications in identity recognition, demographic survey, and human–computer interaction systems. In the past, gender recognition was based on 2-D images or videos, which has many limitations and disadvantages, such as low accuracy and sensitivity to the viewpoint of the camera and lighting conditions. In this paper, we investigate gender recognition using 3-D human body shapes. The 3-D human body shapes used for gender recognition were obtained by laser scanning. Different machine-learning algorithms and feature-extraction methods are investigated and analyzed in this paper. Experimental results show that the support vector machine (SVM) is the best classification algorithm, and the features represented using distributions of normals are very effective for gender recognition. Furthermore, Fourier descriptor (FD) is a robust method to analyze the breast regions and has great potential applications in 3-D human-body-shape-based biometrics. The research demonstrates that our shape-based gender recognition has achieved a very high recognition rate. The techniques provide effective ways for gender recognition and overcome some limitations in 2-D technologies. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Systems, Man & Cybernetics: Part C - Applications & Reviews is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GENDER KW - HUMAN-computer interaction KW - IDENTIFICATION -- Equipment & supplies KW - SUPPORT vector machines KW - THREE-dimensional imaging N1 - Accession Number: 66815460; Source Information: Nov2011, Vol. 41 Issue 6, p898; Subject Term: GENDER; Subject Term: HUMAN-computer interaction; Subject Term: IDENTIFICATION -- Equipment & supplies; Subject Term: SUPPORT vector machines; Subject Term: THREE-dimensional imaging; Subject Term: ; Number of Pages: 11p; ; Document Type: Article; L3 - 10.1109/TSMCC.2011.2104950 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=66815460&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - SHIVELEY, A.R. AU - SHADE, P.A. AU - PILCHAK, A.L. AU - TILEY, J.S. AU - KERNS, R. T1 - A novel method for acquiring large-scale automated scanning electron microscope data. JO - Journal of Microscopy JF - Journal of Microscopy Y1 - 2011/11// VL - 244 IS - 2 M3 - Article SP - 181 EP - 186 SN - 00222720 AB - Summary Recent software and hardware advances in the field of electron backscatter diffraction have led to an increase in the rate of data acquisition. Combining automated stage movements with conventional beam control have allowed researchers to collect data from significantly larger areas of samples than was previously possible. This paper describes a LabVIEW™ and AutoIT© code which allows for increased flexibility compared to commercially available software. The source code for this software has been made available in the online version of this paper. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microscopy is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCANNING electron microscopy KW - ELECTRONS -- Backscattering KW - COMPUTER software KW - AUTOMATION KW - COMPUTER input-output equipment KW - ACQUISITION of data KW - CONTROL theory (Mathematics) N1 - Accession Number: 66644641; SHIVELEY, A.R. 1,2; SHADE, P.A. 1,2; PILCHAK, A.L. 1,2; TILEY, J.S. 1; KERNS, R. 3; Source Information: Nov2011, Vol. 244 Issue 2, p181; Subject: SCANNING electron microscopy; Subject: ELECTRONS -- Backscattering; Subject: COMPUTER software; Subject: AUTOMATION; Subject: COMPUTER input-output equipment; Subject: ACQUISITION of data; Subject: CONTROL theory (Mathematics); Number of Pages: 6p; Illustrations: 1 Color Photograph, 1 Black and White Photograph, 1 Illustration; Document Type: Article L3 - 10.1111/j.1365-2818.2011.03524.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=66644641&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Foutch, Brian K. AU - Stringham, James M. AU - Lakshminarayanan, Vasuvedan T1 - A new quantitative technique for grading Farnsworth D-15 color panel tests. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2011/11// VL - 58 IS - 19/20 M3 - Article SP - 1755 EP - 1763 SN - 09500340 AB - There are three variables involved in modeling measurement errors – type, severity, and selectivity. Whereas clinicians typically utilize a graphical technique to grade color deficiencies based on D-15 panel tests, Vingrys and King-Smith developed a quantitative scoring technique for panel color tests, which models all three factors by utilizing an overall moment of inertia for color difference vectors (CDVs) calculated in 1976 CIELUV space. We propose a least squares analysis via linear regression of the errors (ΔU, ΔV) according to the following equation: ΔV = mΔU, where m = slope of best-fit line determined by linear regression. Error type is determined by the angular proximity of the best-fit line to known confusion axes representing protan, deutan, tritan or unspecified color defects. The severity is the sum of the CDV lengths of all errors made, and the selectivity is determined by the adjusted variance of the least squares fit. We determined normative threshold values for type, severity and selectivity by inspecting 142 cap arrangements with tentative diagnoses. We then analyzed 49 standard D-15 cap arrangements of subjects with definitive diagnoses to determine the sensitivity and specificity of our method to defect types. The results were then compared with those of Vingrys and King-Smith. Our linear regression technique provides an improved assessment of error arrangements that represent subtle unspecified color defects. However, our model appears too sensitive to atypical repositioning errors made when the majority of errors lie along known confusions. Used in conjunction with previous quantitative methods, linear regression by least squares proves a useful tool in the classification of errors of D-15 color panel tests. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTITATIVE research KW - GRADING (Commercial products) KW - REGRESSION analysis KW - VISION testing KW - COLOR vision KW - ERRORS KW - LEAST squares KW - color panel test KW - color vision testing KW - least squares KW - linear regression N1 - Accession Number: 67457810; Foutch, Brian K. 1; Email Address: brian.foutch@us.af.mil; Stringham, James M. 2; Lakshminarayanan, Vasuvedan 3,4; Affiliations: 1: Air Force Research Laboratory, Brooks City Base, USA; 2: TASC Corporation, USA; 3: School of Optometry and Departments of Physics and Electrical and Computer Engineering, University of Waterloo, Canada; 4: Michigan Center for Theoretical Physics, University of Michigan, USA; Issue Info: Nov2011, Vol. 58 Issue 19/20, p1755; Thesaurus Term: QUANTITATIVE research; Thesaurus Term: GRADING (Commercial products); Thesaurus Term: REGRESSION analysis; Subject Term: VISION testing; Subject Term: COLOR vision; Subject Term: ERRORS; Subject Term: LEAST squares; Author-Supplied Keyword: color panel test; Author-Supplied Keyword: color vision testing; Author-Supplied Keyword: least squares; Author-Supplied Keyword: linear regression; Number of Pages: 9p; Illustrations: 5 Charts, 11 Graphs; Document Type: Article L3 - 10.1080/09500340.2011.573881 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=67457810&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Welter, John T. AU - Sathish, Shamachary AU - Christensen, Daniel E. AU - Brodrick, Philip G. AU - Heebl, Jason D. AU - Cherry, Matthew R. T1 - Focusing of longitudinal ultrasonic waves in air with an aperiodic flat lens. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2011/11// VL - 130 IS - 5 M3 - Article SP - 2789 EP - 2796 SN - 00014966 AB - Modeling and experimental results of an ultrasonic aperiodic flat lens for use in air are presented. Predictive modeling of the lens is performed using a hybrid genetic-greedy algorithm constrained to a linear structure. The optimized design parameters are used to fabricate a lens. A method combining a fiber-disk arrangement and scanning laser vibrometer measurements is developed to characterize the acoustic field distribution generated by the lens. The focal spot size is determined to be 0.88 of the incident wavelength of 80-90 kHz at a distance of 2.5 mm from the lens. Theoretically computed field distributions, optimized frequency of operation, and spatial resolution focal length are compared with experimental measurements. The differences between experimental measurements and the theoretical computations are analyzed. The theoretical calculation of the focal spot diameter is 1.7 mm which is 48% of the experimental measurement at a frequency of 80-90 kHz. This work illustrates the capabilities of a hybrid algorithm approach to design of flat acoustic lenses to operate in air with a resolution of greater than the incident wavelength and the challenges of characterizing acoustic field distribution in air. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 67252002; Welter, John T. 1; Sathish, Shamachary 2; Christensen, Daniel E. 3; Brodrick, Philip G. 4; Heebl, Jason D. 5; Cherry, Matthew R. 2; Affiliations: 1 : Air Force Research Laboratory, Nondestructive Evaluation Branch (AFRL/RXLP), 2230 Tenth Street, Wright-Patterson AFB, Ohio 45433; 2 : University of Dayton Research Institute, Structural Integrity Division, 300 College Park, Dayton, Ohio 45469; 3 : Iowa State University, Department of Aerospace Engineering, 12508 Crawford Road, Omaha, Nebraska 68144; 4 : Southwestern Ohio Council of Higher Education, 7828 Shadowhill Way, Cincinnati, Ohio 45242; 5 : Air Force Research Laboratory, Nondestructive Evaluation Branch (AFRL/RXLP), 2230 Tenth St., Wright-Patterson AFB, Ohio 45433; Source Info: Nov2011, Vol. 130 Issue 5, p2789; Number of Pages: 8p; Document Type: Article L3 - 10.1121/1.3640841 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=67252002&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR ID - 104638269 T1 - Values as Determinants of the Motivation to Lead. AU - Clemmons, Alton B. AU - Fields, Dail Y1 - 2011/11// N1 - Accession Number: 104638269. Language: English. Entry Date: 20111206. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services; Psychiatry/Psychology. Instrumentation: Ten-Item Personality Inventory (TIPI) (Gosling et al); Motivation to Lead Scale (MTL); HEXACO-PI Honesty-Humility Scale; Self-Efficacy Towards Service Scale (Weber et al); Professionalism Scale (Hall); New General Self-Efficacy Scale (Chen et al). NLM UID: 8915802. KW - Motivation KW - Leadership KW - Personal Values KW - Military Personnel -- Psychosocial Factors KW - Human KW - Survey Research KW - Male KW - Female KW - Adult KW - Middle Age KW - Summated Rating Scaling KW - Scales KW - Psychological Tests KW - Personality Tests KW - Attitude Measures SP - 587 EP - 600 JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) JA - MILIT PSYCHOL VL - 23 IS - 6 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - We examined the incremental contribution of personal values in predicting individuals' motivation to lead (MTL) in a military personnel sample (n = 231). We operationalized self-transcendence through personal values (spirituality, integrity, and willingness to serve) and self-enhancement value orientation through desire for power/achievement. In multivariate analyses, personal values made significant incremental contributions in explaining of all three forms of MTL. Personal values had the largest incremental effect in explaining noncalculative MTL. Self-enhancement values had a larger positive relationship with affective-identity and social-normative MTL than did self-transcendence values. Inversely, self-transcendence values had a significantly larger relationship with noncalculative MTL. SN - 0899-5605 AD - United States Air Force, USA AD - School of Global Leadership and Entrepreneurship, Regent University, USA DO - 10.1080/08995605.2011.616787 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104638269&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 104637196 T1 - Bench Evaluation of 7 Home-Care Ventilators. AU - Blakeman, Thomas C. AU - Rodriquez Jr., Dario AU - Hanseman, Dennis AU - Branson, Richard D. Y1 - 2011/11// N1 - Accession Number: 104637196. Language: English. Entry Date: 20111122. Revision Date: 20150819. Publication Type: Journal Article; research; tables/charts. Journal Subset: Allied Health; Blind Peer Reviewed; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 7510357. KW - Ventilators, Mechanical -- Evaluation KW - Respiration, Artificial -- Methods KW - Portable Equipment -- Evaluation KW - Equipment Design KW - Positive End-Expiratory Pressure KW - Simulations KW - Respiratory Mechanics KW - Tidal Volume KW - Nonparametric Statistics KW - Kruskal-Wallis Test KW - Data Analysis Software KW - Descriptive Statistics SP - 1791 EP - 1798 JO - Respiratory Care JF - Respiratory Care JA - RESPIR CARE VL - 56 IS - 11 CY - Irving, Texas PB - Daedalus Enterprises, Inc. AB - BACKGROUND: Portable ventilators continue to decrease in size while increasing in performance. We bench-tested the triggering, battery duration, and tidal volume (VT) of 7 portable ventilators: LTV 1000, LTV 1200, Puritan Bennett 540, Trilogy, Vela, iVent 101, and HT50. METHODS: We tested triggering with a modified dual-chamber test lung to simulate spontaneous breathing with weak, normal, and strong inspiratory effort. We measured battery duration by fully charging the battery and operating the ventilator with a VT of 500 mL, a respiratory rate of 20 breaths/min, and PEEP of 5 cm H2O until breath-delivery ceased. We tested VT accuracy with pediatric ventilation scenarios (VT 50 mL or 100 mL, respiratory rate 50 breaths/min, inspiratory time 0.3 s, and PEEP 5 cm H2O) and an adult ventilation scenario (VT 400 mL, respiratory rate 30 breaths/min, inspiratory time 0.5 s, and PEEP 5 cm H2O). We measured and analyzed airway pressure, volume, and flow signals. RESULTS: At the adult settings the measured VT range was 362-426 mL. On the pediatric settings the measured VT range was 51-182 mL at the set VT of 50 mL, and 90-141 mL at the set VT of 100 mL. The VT delivered by the Vela at both the 50 mL and 100 mL, and by the HT50 at 100 mL, did not meet the American Society for Testing and Materials standard for VT accuracy. Triggering response and battery duration ranged widely among the tested ventilators. CONCLUSIONS: There was wide variability in battery duration and triggering sensitivity. Five of the ventilators performed adequately in VT delivery across several settings. The combination of high respiratory rate and low VT presented problems for 2 of the ventilators. SN - 0020-1324 AD - Department of Surgery, Division of Trauma and Critical Care, University of Cincinnati Medical Center, Cincinnati OH AD - United States Air Force Center for Sustainment of Trauma and Readiness Skills, University of Cincinnati Medical Center, Cincinnati, Ohio U2 - PMID: 21605488. DO - 10.4187/respcare.01176 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104637196&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - GEN AU - Harrington, Kathleen T1 - Siobhan Fallon interviewed by Kathleen Harrington. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2011/11// Y1 - 2011/11// VL - 23 IS - 1 M3 - Interview SP - 175 EP - 186 PB - US Air Force Academy English Department SN - 10466967 AB - An interview with author Siobhan Fallon is presented. When asked about the catalyst in choosing the title of her short story collection, she refers to her first story entitled "Waiting." She admits that writing is her way of sharing a glimpse of her world with others. She states that soldiers' spouses like her need to be educated about the opportunities open to military families. KW - FALLON, Siobhan -- Interviews KW - SHORT story (Literary form) -- Women authors KW - MILITARY spouses KW - WAITING (Short story) N1 - Accession Number: 67660090; Source Information: 2011, Vol. 23 Issue 1, p175; Subject Term: FALLON, Siobhan -- Interviews; Subject Term: SHORT story (Literary form) -- Women authors; Subject Term: MILITARY spouses; Subject Term: WAITING (Short story); Subject Term: ; Number of Pages: 12p; ; Document Type: Interview; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=67660090&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2011-28660-002 AN - 2011-28660-002 AU - Halverson, Tim AU - Hornof, Anthony J. T1 - A computational model of 'active vision' for visual search in human–computer interaction. JF - Human-Computer Interaction JO - Human-Computer Interaction Y1 - 2011/11// VL - 26 IS - 4 SP - 285 EP - 314 CY - United Kingdom PB - Taylor & Francis SN - 0737-0024 SN - 1532-7051 AD - Halverson, Tim, WPAFB, 711 HPW/RHCP, Bldg 840, Rm W200, 2510 Fifth Street, Fifth Street, OH, US, 45433-7951 N1 - Accession Number: 2011-28660-002. Partial author list: First Author & Affiliation: Halverson, Tim; Air Force Research Laboratory, US. Other Publishers: Lawrence Erlbaum. Release Date: 20120116. Correction Date: 20120618. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Hornof, Anthony J. Major Descriptor: Human Computer Interaction; Human Machine Systems; Visual Search; Computational Modeling. Classification: Engineering & Environmental Psychology (4000). Population: Human (10). Tests & Measures: Mixed Density Task; Consonant–Vowel–Consonant Task; Semantic Grouping Task. Methodology: Empirical Study; Mathematical Model; Quantitative Study. References Available: Y. Page Count: 30. Issue Publication Date: Nov, 2011. Publication History: Revised Date: Sep 29, 2010; Aug 2, 2010; First Submitted Date: Apr 3, 2009. Copyright Statement: Taylor and Francis Group, LLC. 2011. AB - Human visual search plays an important role in many human–computer interaction (HCI) tasks. Better models of visual search are needed not just to predict overall performance outcomes, such as whether people will be able to find the information needed to complete an HCI task, but to understand the many human processes that interact in visual search, which will in turn inform the detailed design of better user interfaces. This article describes a detailed instantiation, in the form of a computational cognitive model, of a comprehensive theory of human visual processing known as 'active vision' (Findlay & Gilchrist, 2003). The computational model is built using the Executive Process-Interactive Control cognitive architecture. Eye-tracking data from three experiments inform the development and validation of the model. The modeling asks—and at least partially answers—the four questions of active vision: (a) What can be perceived in a fixation? (b) When do the eyes move? (c) Where do the eyes move? (d) What information is integrated between eye movements? Answers include: (a) Items nearer the point of gaze are more likely to be perceived, and the visual features of objects are sometimes misidentified. (b) The eyes move after the fixated visual stimulus has been processed (i.e., has entered working memory). (c) The eyes tend to go to nearby objects. (d) Only the coarse spatial information of what has been fixated is likely maintained between fixations. The model developed to answer these questions has both scientific and practical value in that the model gives HCI researchers and practitioners a better understanding of how people visually interact with computers, and provides a theoretical foundation for predictive analysis tools that can predict aspects of that interaction. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - computational models KW - active vision KW - visual search KW - human–computer interactions KW - 2011 KW - Human Computer Interaction KW - Human Machine Systems KW - Visual Search KW - Computational Modeling KW - 2011 U1 - Sponsor: Office of Naval Research. Grant: N00014-02-10440; N00014-06-10054. Recipients: No recipient indicated U1 - Sponsor: National Science Foundation. Grant: IIS-0308244. Recipients: No recipient indicated U1 - Sponsor: University of Oregon, US. Recipients: Hornof, Anthony J. (Prin Inv) DO - 10.1080/07370024.2011.625237 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-28660-002&site=ehost-live&scope=site UR - hornof@cs.uoregon.edu UR - timothy.halverson@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-25968-003 AN - 2011-25968-003 AU - Clemmons, Alton B. III AU - Fields, Dail T1 - Values as determinants of the motivation to lead. JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2011/11// VL - 23 IS - 6 SP - 587 EP - 600 CY - United Kingdom PB - Taylor & Francis SN - 0899-5605 SN - 1532-7876 AD - Clemmons, Alton B. III, 5478-A Arnold Avenue SW, Washington, DC, US, 20032 N1 - Accession Number: 2011-25968-003. Partial author list: First Author & Affiliation: Clemmons, Alton B. III; United States Air Force, Washington, DC, US. Other Publishers: Educational Publishing Foundation; Lawrence Erlbaum. Release Date: 20120130. Correction Date: 20151019. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Leadership; Motivation; Personal Values. Minor Descriptor: Military Personnel. Classification: Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Middle Age (40-64 yrs) (360). Tests & Measures: Spirituality at Work Scale; Professionalism Scale; Self-Efficacy Towards Service Scale DOI: 10.1037/t25797-000; Ten-Item Personality Inventory DOI: 10.1037/t07016-000; New General Self-Efficacy Scale DOI: 10.1037/t08800-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 14. Issue Publication Date: Nov, 2011. Copyright Statement: Taylor & Francis Group, LLC AB - We examined the incremental contribution of personal values in predicting individuals' motivation to lead (MTL) in a military personnel sample (n = 231). We operationalized self-transcendence through personal values (spirituality, integrity, and willingness to serve) and self-enhancement value orientation through desire for power/achievement. In multivariate analyses, personal values made significant incremental contributions in explaining of all three forms of MTL. Personal values had the largest incremental effect in explaining noncalculative MTL. Self-enhancement values had a larger positive relationship with affective-identity and social-normative MTL than did self-transcendence values. Inversely, self-transcendence values had a significantly larger relationship with noncalculative MTL. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - motivation KW - leadership KW - military personnel KW - personal values KW - 2011 KW - Leadership KW - Motivation KW - Personal Values KW - Military Personnel KW - 2011 DO - 10.1080/08995605.2011.616787 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-25968-003&site=ehost-live&scope=site UR - al.clemmons@yahoo.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-21857-003 AN - 2011-21857-003 AU - Murnieks, Charles Y. AU - Haynie, J. Michael AU - Wiltbank, Robert E. AU - Harting, Troy T1 - ‘I like how you think’: Similarity as an interaction bias in the investor–entrepreneur dyad. JF - Journal of Management Studies JO - Journal of Management Studies Y1 - 2011/11// VL - 48 IS - 7 SP - 1533 EP - 1561 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0022-2380 SN - 1467-6486 AD - Haynie, J. Michael, Department of Entrepreneurship and Emerging Enterprises, Whitman School of Management, Syracuse University, 721 University Ave, Syracuse, NY, US, 13244-2450 N1 - Accession Number: 2011-21857-003. Partial author list: First Author & Affiliation: Murnieks, Charles Y.; United States Air Force Academy, CO, US. Other Publishers: Blackwell Publishing. Release Date: 20120409. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Business Investments; Decision Making; Entrepreneurship; Response Bias; Venture Capital. Classification: Management & Management Training (3640). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Mathematical Model; Quantitative Study. References Available: Y. Page Count: 29. Issue Publication Date: Nov, 2011. Copyright Statement: The Authors. Journal of Management Studies—Blackwell Publishing Ltd. and Society for the Advancement of Management Studies. 2011. AB - Investigating the factors that influence venture capital decision-making has a long tradition in the management and entrepreneurship literatures. However, few studies have considered the factors that might bias an investment decision in a way that is idiosyncratic to a given investor–entrepreneur dyad. We do so in this study. Specifically, we build from the literature on the ‘similarity effect’ to investigate the extent to which decision-making process similarity (shared between the investor and the entrepreneur) might bias or otherwise impact the investor’s evaluation of a new venture investment opportunity. Our findings suggest venture capitalists evaluate more favourably opportunities represented by entrepreneurs who ‘think’ in ways similar to their own. Moreover, in the presence of decision-making process similarity, the impacts of other factors that inform the investment decision actually change in counter-intuitive ways. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - interaction bias KW - investor–entrepreneur dyads KW - venture capitals KW - decision-making KW - 2011 KW - Business Investments KW - Decision Making KW - Entrepreneurship KW - Response Bias KW - Venture Capital KW - 2011 DO - 10.1111/j.1467-6486.2010.00992.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-21857-003&site=ehost-live&scope=site UR - jmhaynie@syr.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-23266-005 AN - 2011-23266-005 AU - Barnes, Christopher M. AU - Hollenbeck, John R. AU - Jundt, Dustin K. AU - DeRue, D. Scott AU - Harmon, Stephen J. T1 - Mixing individual incentives and group incentives: Best of both worlds or social dilemma? JF - Journal of Management JO - Journal of Management JA - J Manage Y1 - 2011/11// VL - 37 IS - 6 SP - 1611 EP - 1635 CY - US PB - Sage Publications SN - 0149-2063 SN - 1557-1211 AD - Barnes, Christopher M., Virginia Tech, 2007 Pamplin, Blacksburg, VA, US, 24061 N1 - Accession Number: 2011-23266-005. Partial author list: First Author & Affiliation: Barnes, Christopher M.; United States Military Academy at West Point, West Point, NY, US. Release Date: 20111114. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Competition; Cooperation; Incentives; Rewards; Work Teams. Minor Descriptor: Group Dynamics; Social Dilemma. Classification: Industrial & Organizational Psychology (3600). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Wonderlic Personnel Test. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 25. Issue Publication Date: Nov, 2011. Copyright Statement: All rights reserved. The Author(s). 2011. AB - Equity theory emphasizes making distinctions between individual contributions to teams and then recognizing these with differentiations in rewards. However, social interdependence theory emphasizes maximizing cooperation in teams by compensating members equally. Several researchers have advocated offsetting the limitations of individually based incentives and group-based incentives by mixing the two. However, the authors contend that this puts team members in a social dilemma, leading them to focus on the individually based component. The authors find that in comparison to group-based only incentives, mixed individual/group incentives lead team members to perform faster but less accurately and focus on their own taskwork to the detriment of backing up behavior. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - rewards KW - individual incentives KW - group incentives KW - mixed incentives KW - compensation KW - interdependence KW - social dilemma KW - teamwork KW - work teams KW - 2011 KW - Competition KW - Cooperation KW - Incentives KW - Rewards KW - Work Teams KW - Group Dynamics KW - Social Dilemma KW - 2011 DO - 10.1177/0149206309360845 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-23266-005&site=ehost-live&scope=site UR - UR - ORCID: 0000-0003-2520-6200 UR - cmbarnes@vt.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-25747-001 AN - 2011-25747-001 AU - Lyon, Don R. AU - Gunzelmann, Glenn M. T1 - Functional equivalence and spatial path memory. JF - The Quarterly Journal of Experimental Psychology JO - The Quarterly Journal of Experimental Psychology JA - Q J Exp Psychol (Hove) Y1 - 2011/11// VL - 64 IS - 11 SP - 2081 EP - 2087 CY - United Kingdom PB - Taylor & Francis SN - 1747-0218 SN - 1747-0226 AD - Lyon, Don R., L3 Communications, 6030 South Kent Street, Mesa, AZ, US, 85212-6061 N1 - Accession Number: 2011-25747-001. PMID: 22044400 Other Journal Title: The Quarterly Journal of Experimental Psychology A: Human Experimental Psychology; The Quarterly Journal of Experimental Psychology B: Comparative and Physiological Psychology. Partial author list: First Author & Affiliation: Lyon, Don R.; L3 Communications, Air Force Research Laboratory, Mesa, AZ, US. Release Date: 20120130. Correction Date: 20120618. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Processes; Spatial Memory; Spatial Perception. Classification: Learning & Memory (2343). Population: Human (10). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 7. Issue Publication Date: Nov, 2011. Publication History: Accepted Date: Aug 10, 2011; First Submitted Date: Dec 3, 2010. Copyright Statement: The Experimental Psychology Society. 2011. AB - [Correction Notice: An erratum for this article was reported in Vol 65(3) of The Quarterly Journal of Experimental Psychology (see record [rid]2012-07223-017[/rid]). The publisher, Psychology Press, would like to apologize to the authors and to the readers for this error. The correct article with all corrections has now been published online and can be found here. Please note the online version now differs from the print version. Don R. Lyon¹ and Glenn M. Gunzelmann² ¹L3 Communications at Air Force Research Laboratory, Mesa, AZ, USA. ²Cognitive Models and Agents Branch, Air Force Research Laboratory,Wright Patterson AFB, OH, USA. Correspondence should be addressed to Don R. Lyon, L3 Communications, 6030 South Kent Street, Mesa, AZ, 85212–6061, USA. E-mail: don.lyon@l-3com.com.] Loomis, Klatzky, Avraamides, Lippa and Golledge (2007) suggest that, when it comes to spatial information, verbal description and perceptual experience are nearly functionally equivalent with respect to the cognitive representations they produce. We tested this idea for the case of spatial memory for complex paths. Paths consisted entirely of unit-length segments followed by 90-degree turns, thus assuring that a path could be described with equal precision using either an egocentric verbal description or a virtual self-motion experience. The verbal description was analogous to driving directions (e.g., turn left and go one block, then turn right, etc.) except in three dimensions (allowing rotation followed by up or down movement). Virtual self-motion was depicted as first-person travel through a 3D grid of featureless corridors. Comparison of these two conditions produced a result that may be surprising to some, but nevertheless appears to support the notion of functional equivalence: Virtual self-motion does not produce better path memory than verbal description, when care is taken to present equally precise path information. This result holds for even very complex paths and despite evidence from proximity-based interference that the memory representation of the path is spatial. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - functional equivalence KW - spatial path memory KW - cognitive representations KW - 2011 KW - Cognitive Processes KW - Spatial Memory KW - Spatial Perception KW - 2011 U1 - Sponsor: US Air Force Office of Scientific Research, US. Grant: 02HE01COR; 10RH06COR. Recipients: No recipient indicated DO - 10.1080/17470218.2011.618227 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-25747-001&site=ehost-live&scope=site UR - don.lyon@mesa.afmc.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Wilfong, E. R. AU - Lyles, M. AU - Rietcheck, R. L. AU - Arfsten, D. P. AU - Boeckman, H. J. AU - Johnson, E. W. AU - Doyle, T. L. AU - Chapman, G. D. T1 - The Acute and Long-Term Effects of Middle East Sand Particles on the Rat Airway Following a Single Intratracheal Instillation. JO - Journal of Toxicology & Environmental Health: Part A JF - Journal of Toxicology & Environmental Health: Part A Y1 - 2011/10/15/ VL - 74 IS - 20 M3 - Article SP - 1351 EP - 1365 SN - 15287394 AB - Military personnel deployed in the Middle East have emphasized concerns regarding high levels of dust generated from blowing desert sand and the movement of troops and equipment. Airborne particulate matter levels (PM10; PM < 10 μm) in the region may exceed 1500 μg/m3, significantly higher than the military exposure guideline (MEG) of 50 μg/m3. Increases in PM10 have been linked to a rise in incidences of asthma, obstructive pulmonary disease, lung cancer, and cardiovascular diseases. Male Sprague-Dawley rats received a single intratracheal (IT) instillation of 1, 5, or 10 mg of Middle East PM10 collected at a military occupied site in Kuwait, silica (positive control), or titanium dioxide (TiO2; negative control) suspended in 400 μl sterile saline, or saline alone (vehicle control). Twenty-four hours, 3 d, 7 d and 6 mo postexposure (n = 15/group), organs including lung were evaluated for histopathological changes and for particle contaminants. Bronchoalveolar fluid (BALF) was also analyzed for cellular and biochemical parameters, including cytokines and chemokines. Instillation of silica resulted in early, pronounced, sustained inflammation indicated by significant increases in levels of total protein and neutrophils, and activities of lactate dehydrogenase activity and β-glucuronidase activity. Lower magnitude and transient changes using the same markers were observed in animals exposed to TiO2 and Middle East PM10. The results suggest that for acute exposures, this Middle East PM10 is a nuisance-type dust with relatively low toxicity. However, since average deployment of military personnel to the Middle East is 180 d with potential for multiple follow-on tours, chronic exposure studies are needed to fully understand the pulmonary effects associated with Middle East PM exposure. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Toxicology & Environmental Health: Part A is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Sand KW - Particles KW - Airway (Medicine) KW - Rats as laboratory animals KW - Middle East N1 - Accession Number: 65303324; Wilfong, E. R. 1; Lyles, M. 2; Rietcheck, R. L. 3; Arfsten, D. P. 4; Boeckman, H. J. 5; Johnson, E. W. 5; Doyle, T. L. 5; Chapman, G. D. 5; Affiliations: 1: Department of Chemistry, United States Naval Academy, Annapolis, Maryland, USA; 2: United States Navy Bureau of Medicine and Surgery, Washington, DC, USA; 3: Air Force Research Laboratory, Tri-Service Research Support, Pathology Section, Wright-Patterson AFB, Ohio, USA; 4: Navy Drug Screening Laboratory, Naval Air Station Jacksonville, Florida, USA; 5: Environmental Health Effects Laboratory, Wright-Patterson AFB, Naval Health Research Center Detachment, Ohio, USA; Issue Info: Oct2011, Vol. 74 Issue 20, p1351; Thesaurus Term: Sand; Thesaurus Term: Particles; Subject Term: Airway (Medicine); Subject Term: Rats as laboratory animals; Subject: Middle East; NAICS/Industry Codes: 112990 All Other Animal Production; NAICS/Industry Codes: 416390 Other specialty-line building supplies merchant wholesalers; NAICS/Industry Codes: 212321 Construction Sand and Gravel Mining; NAICS/Industry Codes: 484222 Dry bulk materials trucking, local; NAICS/Industry Codes: 484232 Dry bulk materials trucking, long distance; NAICS/Industry Codes: 423320 Brick, Stone, and Related Construction Material Merchant Wholesalers; Number of Pages: 15p; Illustrations: 1 Color Photograph, 2 Charts, 6 Graphs; Document Type: Article L3 - 10.1080/15287394.2010.516239 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=65303324&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Timko, Michael T. AU - Herndon, Scott C. AU - de la Rosa Blanco, Elena AU - Wood, Ezra C. AU - Yu, Zhenhong AU - Miake-Lye, Richard C. AU - Knighton, W. Berk AU - Shafer, Linda AU - DeWitt, Matthew J. AU - Corporan, Edwin T1 - Combustion Products of Petroleum Jet Fuel, a Fischer-Tropsch Synthetic Fuel, and a Biomass Fatty Acid Methyl Ester Fuel for a Gas Turbine Engine. JO - Combustion Science & Technology JF - Combustion Science & Technology Y1 - 2011/10// VL - 183 IS - 10 M3 - Article SP - 1039 EP - 1068 SN - 00102202 AB - We report combustion emissions data for several alternatives to petroleum based Jet A jet fuel, including a natural gas-derived Fischer-Tropsch (FT) synthetic fuel; a 50/50 blend of the FT synthetic fuel with Jet A-1; a 20/80 blend of a fatty acid methyl ester (FAME) with jet fuel; and a 40/60 blend of FAME with jet fuel. The chief distinguishing features of the alternative fuels are reduced (for blends) or negligible (for pure fuels) aromatic content and increased oxygen content (for FAME blends). A CFM International CFM56-7 gas turbine engine was the test engine, and we measured NOX, CO, speciated volatile organic compounds (including oxygenates, olefins, and aromatic compounds), and nonvolatile particle size distribution, number, and mass emissions. We developed several new methods that account for fuel energy content and used the new methods to evaluate potential fuel effects on emissions performance. Our results are categorized as follows: (1) regulated pollutant emissions, CO, and NOX; (2) volatile organic compound emissions speciation; and (3) particle emissions. Replacing all or part of the petroleum jet fuel with either FAME or FT fuel reduces NOX emissions and may reduce CO emissions. Combustion of FT fuel and fuel blends increases selectivities and in some cases yields of oxygenates and some hydrocarbon volatile organic compound emissions relative to petroleum jet fuel. Combustion of FAME fuel increases propene and butene emissions, but despite its oxygen content does not strongly affect oxygenate emissions. Replacing petroleum jet fuel with zero aromatic alternatives decreases the emissions of aromatic hydrocarbons. The fuel effects become more pronounced as the size of the aromatic molecule increases (e.g., toluene is reduced more strongly than benzene). Particle emissions are decreased in particle size, number density, and total mass when petroleum jet fuel is replaced with the zero aromatic fuels. The effects of fuel composition on particle emissions are most pronounced at lower power conditions, i.e., when combustion temperature and pressure are lower, and less efficient mixing may lead to locally higher fuel/air ratios than are present at higher power. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Petroleum KW - FUEL KW - Fischer-Tropsch process KW - Synthetic fuels KW - Biomass KW - Alternative fuels KW - Combustion products KW - Jet planes KW - Gas turbines KW - Emissions KW - Gas turbine engine N1 - Accession Number: 65456347; Timko, Michael T. 1; Herndon, Scott C. 1; de la Rosa Blanco, Elena 1; Wood, Ezra C. 1; Yu, Zhenhong 1; Miake-Lye, Richard C. 1; Knighton, W. Berk 2; Shafer, Linda 3; DeWitt, Matthew J. 3; Corporan, Edwin 4; Affiliations: 1: Aerodyne Research Inc., Billerica, Massachusetts, USA; 2: Department of Chemistry, Montana State University, Bozeman, Montana, USA; 3: University of Dayton Research Institute, Dayton, Ohio, USA; 4: Air Force Research Laboratory, Wright-Patterson AFB, Dayton, Ohio, USA; Issue Info: Oct2011, Vol. 183 Issue 10, p1039; Thesaurus Term: Petroleum; Thesaurus Term: FUEL; Thesaurus Term: Fischer-Tropsch process; Thesaurus Term: Synthetic fuels; Thesaurus Term: Biomass; Thesaurus Term: Alternative fuels; Subject Term: Combustion products; Subject Term: Jet planes; Subject Term: Gas turbines; Author-Supplied Keyword: Emissions; Author-Supplied Keyword: Gas turbine engine; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 412110 Petroleum and petroleum products merchant wholesalers; NAICS/Industry Codes: 486110 Pipeline Transportation of Crude Oil; NAICS/Industry Codes: 424720 Petroleum and Petroleum Products Merchant Wholesalers (except Bulk Stations and Terminals); NAICS/Industry Codes: 424710 Petroleum Bulk Stations and Terminals; NAICS/Industry Codes: 211111 Crude Petroleum and Natural Gas Extraction; NAICS/Industry Codes: 454319 Other fuel dealers; NAICS/Industry Codes: 454310 Fuel Dealers; Number of Pages: 30p; Document Type: Article L3 - 10.1080/00102202.2011.581717 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=65456347&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Wang, Wenjing AU - Chatterjee, Mainak AU - Kwiat, Kevin T1 - Cooperation in Wireless Networks with Unreliable Channels. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2011/10// VL - 59 IS - 10 M3 - Article SP - 2808 EP - 2817 SN - 00906778 AB - In a distributed wireless system, multiple network nodes behave cooperatively towards a common goal. An important challenge in such a scenario is to attain mutual cooperation. This paper provides a non-cooperative game theoretic solution to enforce cooperation in wireless networks in the presence of channel noise. We focus on one-hop information exchange and model the packet forwarding process as a hidden action game with imperfect private monitoring. We propose a state machine based strategy to reach Nash Equilibrium. The equilibrium is proved to be a sequential one with carefully designed system parameters. Furthermore, we extend our discussion to a general wireless network scenario by considering how cooperation can prevail over collusion using evolutionary game theory. The simulation results are provided to back our analysis. In particular, network throughput performance is measured with respect to parameters like channel loss probability, route hop count, and mobility. Results suggest that the performance due to our proposed strategy is in close agreement with that of unconditionally cooperative nodes. Simulation results also reveal how the convergence of cooperation enforcement is affected by initial population share and channel unreliability. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Wireless sensor networks KW - Wireless sensor nodes KW - Data packets & packeting KW - Simulation methods & models KW - Game theory KW - Noise -- Measurement KW - collusion resistance KW - cooperation enforcement KW - Equations KW - evolutionary game theory KW - Games KW - imperfect observation KW - Monitoring KW - Noise KW - Noise measurement KW - sequential equilibrium KW - Wireless networks N1 - Accession Number: 66906337; Wang, Wenjing 1; Chatterjee, Mainak 1; Kwiat, Kevin 2; Affiliations: 1: department of EECS, University of Central Florida, Orlando, FL; 2: Air Force Research Laboratory, Rome, NY; Issue Info: Oct2011, Vol. 59 Issue 10, p2808; Subject Term: Wireless sensor networks; Subject Term: Wireless sensor nodes; Subject Term: Data packets & packeting; Subject Term: Simulation methods & models; Subject Term: Game theory; Subject Term: Noise -- Measurement; Author-Supplied Keyword: collusion resistance; Author-Supplied Keyword: cooperation enforcement; Author-Supplied Keyword: Equations; Author-Supplied Keyword: evolutionary game theory; Author-Supplied Keyword: Games; Author-Supplied Keyword: imperfect observation; Author-Supplied Keyword: Monitoring; Author-Supplied Keyword: Noise; Author-Supplied Keyword: Noise measurement; Author-Supplied Keyword: sequential equilibrium; Author-Supplied Keyword: Wireless networks; Number of Pages: 0p; Document Type: Article L3 - 10.1109/TCOMM.2011.081111.100085 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=66906337&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Gao, Kanke AU - Batalama, Stella N. AU - Pados, Dimitris A. AU - Suter, Bruce W. T1 - Compressive Sampling With Generalized Polygons. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing J1 - IEEE Transactions on Signal Processing PY - 2011/10// Y1 - 2011/10// VL - 59 IS - 10 M3 - Article SP - 4759 EP - 4766 SN - 1053587X AB - We consider the problem of compressed sensing and propose new deterministic low-storage constructions of compressive sampling matrices based on classical finite-geometry generalized polygons. For the noiseless measurements case, we develop a novel exact-recovery algorithm for strictly sparse signals that utilizes the geometry properties of generalized polygons and exhibits complexity that depends on the sparsity value only. In the presence of measurement noise, recovery of the generalized-polygon sampled signals can be carried out effectively using a belief propagation algorithm. Experimental studies included in this paper illustrate our theoretical developments. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTATIONAL complexity KW - ALGORITHMS KW - NOISE -- Measurement KW - BIPARTITE graphs KW - GENERALIZED polygons KW - SPARSE matrices KW - SAMPLING (Statistics) KW - SIGNAL processing -- Digital techniques KW - DETECTORS N1 - Accession Number: 65466594; Source Information: Oct2011, Vol. 59 Issue 10, p4759; Subject Term: COMPUTATIONAL complexity; Subject Term: ALGORITHMS; Subject Term: NOISE -- Measurement; Subject Term: BIPARTITE graphs; Subject Term: GENERALIZED polygons; Subject Term: SPARSE matrices; Subject Term: SAMPLING (Statistics); Subject Term: SIGNAL processing -- Digital techniques; Subject Term: DETECTORS; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.1109/TSP.2011.2160860 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=65466594&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Li, Xue AU - Wu, Zhijin AU - Chakravarthy, Vasu D. AU - Wu, Zhiqiang T1 - A Low-Complexity Approximation to Lognormal Sum Distributions via Transformed Log Skew Normal Distribution. JO - IEEE Transactions on Vehicular Technology JF - IEEE Transactions on Vehicular Technology Y1 - 2011/10// VL - 60 IS - 8 M3 - Article SP - 4040 EP - 4045 SN - 00189545 AB - Sums of lognormal random variables (RVs) occur in many important problems in wireless communication. The lognormal sum distribution is known to have no closed form and is difficult to numerically compute. Several methods have been proposed to approximate the lognormal sum distribution. In this paper, we first propose a low-complexity approximation method called log skew normal (LSN) approximation to model and approximate the lognormal sum distributed RVs. For typical lognormal sum cases in wireless communication, the proposed LSN method has high accuracy in most of the region of the cumulative distribution function (cdf), particularly in the lower region. The closed-form probability density function (pdf) and cdf of the resulting LSN RV are presented, and its parameters are derived from those of the individual lognormal RVs by using a moment-matching technique. However, the LSN approximation has a restriction for the skewness of samples in the logarithm domain. To overcome this drawback, a transformed LSN (TLSN) approximation method is proposed, which uses another parameter to control the skewness of samples in the transform logarithm domain. Simulation results on the pdf and cdf of lognormal sum RVs confirm the effectiveness of the TLSN approximation method. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Vehicular Technology is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Lognormal distribution KW - Random variables KW - Wireless communication systems KW - Logarithmic functions KW - Distribution (Probability theory) KW - Accuracy KW - Approximation to lognormal sums KW - Complexity theory KW - Gaussian distribution KW - Least squares approximation KW - log skew normal KW - moment matching KW - Monte Carlo methods KW - transformed log skew normal N1 - Accession Number: 66816265; Li, Xue 1; Wu, Zhijin 2; Chakravarthy, Vasu D. 3; Wu, Zhiqiang 4; Affiliations: 1: Department of Electrical Engineering, Wright State University, Dayton, OH, USA; 2: Department of Biostatistics, Brown University, Providence, RI , USA; 3: Air Force Research Laboratory, Wright-Patterson AFB, OH , USA; 4: Department of Biostatistics, Brown University, Providence, OH , USA; Issue Info: Oct2011, Vol. 60 Issue 8, p4040; Subject Term: Lognormal distribution; Subject Term: Random variables; Subject Term: Wireless communication systems; Subject Term: Logarithmic functions; Subject Term: Distribution (Probability theory); Author-Supplied Keyword: Accuracy; Author-Supplied Keyword: Approximation to lognormal sums; Author-Supplied Keyword: Complexity theory; Author-Supplied Keyword: Gaussian distribution; Author-Supplied Keyword: Least squares approximation; Author-Supplied Keyword: log skew normal; Author-Supplied Keyword: moment matching; Author-Supplied Keyword: Monte Carlo methods; Author-Supplied Keyword: transformed log skew normal; NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 6p; Document Type: Article L3 - 10.1109/TVT.2011.2163652 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=66816265&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Boglione, L. AU - Webster, R.T. T1 - Unifying interpretation of reflection coefficient and Smith chart definitions. JO - IET Microwaves, Antennas & Propagation JF - IET Microwaves, Antennas & Propagation Y1 - 2011/10// VL - 5 IS - 12 M3 - Article SP - 1479 EP - 1487 SN - 17518725 AB - This study develops a unifying theory that defines a single transformation from the impedance Z to the reflection coefficient Γ plane independently of the impedance normalisation in use; and the real or complex nature of the characteristic impedance Z0. The study starts off from the Kurokawa's definition of reflection coefficient to discuss the required steps to map Z into Γ and highlights the differences that exist between Kurokawa's and the standard Γ definition. As a logical consequence of the previous discussion, a new definition of reflection coefficient is proposed and validated: the apparent differences stemming from either the standard or Kurokawa's definition of reflection coefficient Γ are easily interpreted as particular cases of the proposed transformation. In the process, the study's unifying definition of reflection coefficient allows and facilitates one consistent interpretation of the Smith chart among the possible Γ definitions, including Kurokawa's. Experimental data supporting the study's conclusions are also presented. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Microwaves, Antennas & Propagation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DATA analysis KW - SMITH charts KW - ELECTRIC impedance KW - REFLECTANCE KW - EXPERIMENTS KW - MAPPINGS (Mathematics) N1 - Accession Number: 66388265; Boglione, L. 1; Webster, R.T. 2; Affiliations: 1: Solid State Scientific Corporation, Hanscom AFB, USA; 2: Air Force Research Laboratory, Hanscom AFB, USA; Issue Info: Oct2011, Vol. 5 Issue 12, p1479; Thesaurus Term: DATA analysis; Subject Term: SMITH charts; Subject Term: ELECTRIC impedance; Subject Term: REFLECTANCE; Subject Term: EXPERIMENTS; Subject Term: MAPPINGS (Mathematics); Number of Pages: 9p; Document Type: Article L3 - 10.1049/iet-map.2011.0129 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=66388265&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - PILCHAK, A.L. AU - SHIVELEY, A.R. AU - TILEY, J.S. AU - BALLARD, D.L. T1 - AnyStitch: a tool for combining electron backscatter diffraction data sets. JO - Journal of Microscopy JF - Journal of Microscopy Y1 - 2011/10// VL - 244 IS - 1 M3 - Article SP - 38 EP - 44 SN - 00222720 AB - Summary Recent advances in electron backscatter diffraction equipment and software have permitted increased data acquisition rates on the order of hundreds of points per second with additional increases in the foreseeable future likely. This increase in speed allows users to collect data from statistically significant areas of samples by combining beam-control scans and automated stage movements. To facilitate data analysis, however, the individual tiles must be combined, or stitched, into a single data set. In this paper, we describe a matlab® (The Mathworks, Inc., Natick, MA, USA) program to facilitate stitching of electron backscatter diffraction data. The method offers users a wide range of controls for tile placement including independent overlaps for horizontal and vertical tiles and also includes a parameter to account for systematic stage positioning errors or improperly calibrated scan rotation. The code can stitch data collected on either square or hexagonal grids and contains a function to reduce the resolution of square grid data if the resulting file is too large (or has too many grains) to be opened by the analysis software. The software was primarily written to work with TSL® OIM™ data sets and includes a function to quickly read compressed *.osc files into a variable in the matlab® workspace as opposed to using slower, text-reading functions. The output file is in *.ang format and can be opened directly by TSL® OIM™ Analysis software. A set of functions to facilitate stitching of text-based *.ctf files produced by Oxford Instruments HKL systems are also included. Finally, the code can also be used to combine *.tif images to produce a montage. The source code, a graphical user interface and a compiled version of the software was made available in the online version of this paper. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microscopy is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS -- Backscattering KW - ELECTRON diffraction KW - ACQUISITION of data KW - MEASUREMENT errors KW - GRAPHICAL user interfaces (Computer systems) KW - DATA analysis N1 - Accession Number: 65278708; PILCHAK, A.L. 1,2; SHIVELEY, A.R. 1,2; TILEY, J.S. 1; BALLARD, D.L. 1; Source Information: Oct2011, Vol. 244 Issue 1, p38; Subject: ELECTRONS -- Backscattering; Subject: ELECTRON diffraction; Subject: ACQUISITION of data; Subject: MEASUREMENT errors; Subject: GRAPHICAL user interfaces (Computer systems); Subject: DATA analysis; Number of Pages: 7p; Illustrations: 3 Color Photographs, 4 Diagrams, 1 Graph; Document Type: Article L3 - 10.1111/j.1365-2818.2011.03496.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=65278708&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 108224497 T1 - Treatment of Patients With Degenerative Cervical Radiculopathy Using a Multimodal Conservative Approach in a Geriatric Population: A Case Series. AU - Forbush, Steven W. AU - Cox, Terry AU - Wilson, Eric Y1 - 2011/10// N1 - Accession Number: 108224497. Language: English. Entry Date: 20111109. Revision Date: 20150712. Publication Type: Journal Article; pictorial; research; tables/charts. Journal Subset: Allied Health; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Gerontologic Care; Pain and Pain Management; Physical Therapy; Sports Medicine. Instrumentation: Numeric Pain Rating Scale (NPRS); Neck Disability Index (NDI). NLM UID: 7908150. KW - Cervical Vertebrae -- Pathology -- In Old Age KW - Radiculopathy -- Therapy -- In Old Age KW - Manual Therapy -- Methods -- In Old Age KW - Home Rehabilitation -- In Old Age KW - Therapeutic Exercise -- In Old Age KW - Human KW - Rehabilitation, Geriatric KW - Retrospective Design KW - Record Review KW - Descriptive Statistics KW - Arkansas KW - Treatment Outcomes -- In Old Age KW - Aged KW - Aged, 80 and Over KW - Pain Measurement -- In Old Age KW - Geriatric Functional Assessment KW - Magnetic Resonance Imaging -- In Old Age KW - Scales KW - Clinical Assessment Tools KW - Gerontologic Care KW - Prospective Studies KW - Male KW - Female KW - Physical Examination -- In Old Age KW - Range of Motion -- In Old Age KW - Goniometry -- In Old Age KW - Physical Therapists KW - Test-Retest Reliability KW - Self Report -- In Old Age SP - 723 EP - 733 JO - Journal of Orthopaedic & Sports Physical Therapy JF - Journal of Orthopaedic & Sports Physical Therapy JA - J ORTHOP SPORTS PHYS THER VL - 41 IS - 10 CY - La Crosse, Wisconsin PB - American Physical Therapy Association, Orthopaedic Section SN - 0190-6011 AD - Assistant Professor, Department of Physical Therapy, University of Central Arkansas, Conway, AR AD - Assistant Professor, Department of Physical Therapy, Southwestern Baptist University, Bolivar, MO AD - Major, United States Air Force, Little Rock Air Force Base, Little Rock, AR U2 - PMID: 21891879. DO - 10.2519/jospt.2011.3592 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=108224497&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - GEN AU - Charles, Patrick J. T1 - SCRIBBLE SCRABBLE, THE SECOND AMENDMENT, AND HISTORICAL GUIDEPOSTS: A SHORT REPLY TO LAWRENCE ROSENTHAL AND JOYCE LEE MALCOLM. JO - Northwestern University Law Review JF - Northwestern University Law Review Y1 - 2011///Fall2011 VL - 105 IS - 4 M3 - Essay SP - 1821 EP - 1840 SN - 00293571 KW - MCDONALD v. City of Chicago (Supreme court case) KW - DISTRICT of Columbia v. Heller (Supreme Court case) KW - FIREARMS -- Law & legislation -- United States KW - JURISPRUDENCE KW - CONSTITUTIONAL law -- United States KW - UNITED States. Constitution. 2nd Amendment N1 - Accession Number: 74029224; Charles, Patrick J. 1,2,3; Affiliations: 1: Independent legal consultant on historical, immigration, and constitutional matters, United States Air Force (Mildenhall, UK); 2: J.D., Cleveland-Marshall School of Law; 3: George Washington University; Issue Info: Fall2011, Vol. 105 Issue 4, p1821; Subject Term: MCDONALD v. City of Chicago (Supreme court case); Subject Term: DISTRICT of Columbia v. Heller (Supreme Court case); Subject Term: FIREARMS -- Law & legislation -- United States; Subject Term: JURISPRUDENCE; Subject Term: CONSTITUTIONAL law -- United States ; Company/Entity: UNITED States. Constitution. 2nd Amendment; Number of Pages: 20p; Document Type: Essay UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=74029224&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 108171841 T1 - Performance of portable ventilators for mass-casualty care. AU - Blakeman, Thomas C AU - Rodriquez Jr, Dario AU - Dorlac, Warren C AU - Hanseman, Dennis J AU - Hattery, Ellie AU - Branson, Richard D Y1 - 2011/10//2011 Oct N1 - Accession Number: 108171841. Language: English. Entry Date: 20120427. Revision Date: 20150820. Publication Type: Journal Article; equations & formulas; research; tables/charts. Journal Subset: Allied Health; Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; Public Health; USA. Special Interest: Emergency Care. NLM UID: 8918173. KW - Mass Casualty Incidents -- Evaluation KW - Portable Equipment -- Evaluation KW - Ventilators, Mechanical KW - Disasters -- Evaluation KW - Oxygen -- Physiology KW - Prehospital Care KW - Respiratory Rate KW - Tidal Volume -- Physiology SP - 330 EP - 334 JO - Prehospital & Disaster Medicine JF - Prehospital & Disaster Medicine JA - PREHOSPITAL DISASTER MED VL - 26 IS - 5 PB - Cambridge University Press AB - Introduction: Disasters and mass-casualty scenarios may overwhelm medical resources regardless of the level of preparation. Disaster response requires medical equipment, such as ventilators, that can be operated under adverse circumstances and should be able to provide respiratory support for a variety of patient populations.Objective: The objective of this study was to evaluate the performance of three portable ventilators designed to provide ventilatory support outside the hospital setting and in mass-casualty incidents, and their adherence to the Task Force for Mass Critical Care recommendations for mass-casualty care ventilators.Methods: Each device was evaluated at minimum and maximum respiratory rate and tidal volume settings to determine the accuracy of set versus delivered VT at lung compliance settings of 0.02, 0.08 and 0.1 L/cm H20 with corresponding resistance settings of 10, 25, and 5 cm H2O/L/sec, to simulate patients with ARDS, severe asthma, and normal lungs. Additionally, different FIO2 settings with each device (if applicable) were evaluated to determine accuracy of FIO2 delivery and evaluate the effect on delivered VT. Ventilators also were tested for duration of battery life.Results: VT decreased with all three devices as compliance decreased. The decrease was more pronounced when the internal compressor was activated. At the 0.65 FIO2 setting on the MCV 200, the measured FIO2 varied widely depending on the set VT. Battery life range was 311-582 minutes with the 73X having the longest battery life. Delivered VT decreased toward the end of battery life with the SAVe having the largest decrease. The respiratory rate on the SAVe also decreased approaching the end of battery life.Conclusion: The 73X and MCV 200 were the closest to satisfying the Task Force for Mass Critical Care requirements for mass casualty ventilators, although neither had the capability to provide PEEP. The 73X provided the most consistent tidal volume delivery across all compliances, had the longest battery duration and the least decline in VT at the end of battery life. SN - 1049-023X AD - University of Cincinnati Department of Surgery, Divion of Trauma and Critical Care, Cincinnati, Ohio, USA AD - Center for Sustainment of Trauma and Readiness Skills (CSTARS), United States Air Force, Cincinnati, Ohio, USA AD - Medical Student, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA U2 - PMID: 22336181. DO - 10.1017/s1049023x1100656x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=108171841&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2011-22887-007 AN - 2011-22887-007 AU - McClernon, Christopher AU - Miller, James T1 - Variance as a measure of performance in an aviation context. JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 2011/10// VL - 21 IS - 4 SP - 397 EP - 412 CY - United Kingdom PB - Taylor & Francis SN - 1050-8414 SN - 1532-7108 AD - McClernon, Christopher, USAF, Air Force Research Laboratory, Wright Patterson AFB, OH, US N1 - Accession Number: 2011-22887-007. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: McClernon, Christopher; Air Force Research Laboratory, Wright Patterson Air Force Base, Wright Patterson, OH, US. Other Publishers: Lawrence Erlbaum. Release Date: 20111205. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Aviation; Highway Safety. Minor Descriptor: Performance. Classification: Transportation (4090). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 16. Issue Publication Date: Oct, 2011. Copyright Statement: Taylor and Francis Group, LLC. 2011. AB - A combined measure of performance (i.e., constant error plus variable error) is a common approach to determining aircraft pilot performance. However, a variable error measure has worked well as a performance measure in highway driving. Twenty novice participants were recruited to participate in a study that tested flying performance in a simulator criterion trial following simulated flight training. The data were analyzed first using a common root mean square error measure (combined error). The same data were subsequently analyzed using a variable error measure and the results were compared and contrasted. Results indicated that the variable error approach was sensitive, precise, and efficient when measuring pilot performance. Explanations for why this is a particularly suitable approach in an aviation context are provided. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - performance measure KW - aviation KW - aircrafts KW - highway driving KW - 2011 KW - Aircraft Pilots KW - Aviation KW - Highway Safety KW - Performance KW - 2011 DO - 10.1080/10508414.2011.606765 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-22887-007&site=ehost-live&scope=site UR - ORCID: 0000-0002-3897-8376 UR - UR - christopher.mcclernon@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-21706-005 AN - 2011-21706-005 AU - Cox, Daniel W. AU - Ghahramanlou-Holloway, Marjan AU - Greene, Farrah N. AU - Bakalar, Jennifer L. AU - Schendel, Christina L. AU - Nademin, M. Elicia AU - Jobes, David A. AU - Englert, David R. AU - Kindt, Michael T1 - Suicide in the United States Air Force: Risk factors communicated before and at death. JF - Journal of Affective Disorders JO - Journal of Affective Disorders JA - J Affect Disord Y1 - 2011/10// VL - 133 IS - 3 SP - 398 EP - 405 CY - Netherlands PB - Elsevier Science SN - 0165-0327 SN - 1573-2517 AD - Ghahramanlou-Holloway, Marjan, Department of Medical & Clinical Psychology, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Room B3050, Bethesda, MD, US, 20814-4799 N1 - Accession Number: 2011-21706-005. PMID: 21652080 Partial author list: First Author & Affiliation: Cox, Daniel W.; Department of Medical & Clinical Psychology, Uniformed Services University of the Health Sciences, Bethesda, MD, US. Release Date: 20111031. Correction Date: 20160407. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Ghahramanlou-Holloway, Marjan. Major Descriptor: Air Force Personnel; Risk Factors; Suicide. Classification: Behavior Disorders & Antisocial Behavior (3230); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Interview; Quantitative Study. References Available: Y. Page Count: 8. Issue Publication Date: Oct, 2011. Publication History: First Posted Date: Jun 8, 2011; Accepted Date: May 9, 2011; Revised Date: Apr 15, 2011; First Submitted Date: Dec 31, 2010. Copyright Statement: All rights reserved. Elsevier B.V. 2011. AB - Background: Over the last decade, suicide rates in the U.S. military have steadily increased, resulting in a call for suicide-related research with military populations. The present project aimed to describe and evaluate the communications (i.e., verbally and in suicide notes) of 13 suicide risk factors in the suicide death investigation files of 98 active duty U.S. Air Force (USAF) members. Methods: Two-hundred thirty-seven suicide death investigation files were coded. Ninety-eight decedents left suicide notes and were included in the current analyses. Descriptive statistics were computed to evaluate the types of risk factors most commonly communicated prior to and at the time of death as well as the medium for their communication. Specifically, verbal and note communications were compared to evaluate which medium decedents most often used to communicate risk factors. Also, the frequency that interpersonal compared to intrapsychic risk factors were communicated was evaluated. Results: Hopelessness (35.7% of cases) and perceived burdensomeness (31.6% of cases) were the risk factors most often communicated in suicide notes but not verbally. Thwarted belongingness (29.6% of cases) was the risk factor most often communicated verbally and in the suicide note. Further, evaluated risk factors were more frequently communicated in suicide notes than verbally. Finally, interpersonal risk factors were more often communicated than intrapsychic risk factors. Limitations: The validity of the data relies on interviews of decedents' acquaintances and various medical/military records. Conclusions: Our findings support emphasizing certain risk factors over others in USAF suicide prevention efforts. Further, interpersonal risk factors appeared to be more salient than intrapsychic risk factors in the minds of decedents. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - suicide communication KW - United States Air Force KW - risk factors KW - 2011 KW - Air Force Personnel KW - Risk Factors KW - Suicide KW - 2011 U1 - Sponsor: US Department of Defense, US. Other Details: New faculty startup package. Recipients: Ghahramanlou-Holloway, Marjan U1 - Sponsor: Uniformed Services University of the Health Sciences, US. Recipients: Ghahramanlou-Holloway, Marjan DO - 10.1016/j.jad.2011.05.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-21706-005&site=ehost-live&scope=site UR - mholloway@usuhs.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-18810-012 AN - 2011-18810-012 AU - Alarcon, Gene M. T1 - A meta-analysis of burnout with job demands, resources, and attitudes. JF - Journal of Vocational Behavior JO - Journal of Vocational Behavior JA - J Vocat Behav Y1 - 2011/10// VL - 79 IS - 2 SP - 549 EP - 562 CY - Netherlands PB - Elsevier Science SN - 0001-8791 AD - Alarcon, Gene M., Air Force Research Laboratory, 2698 G St. Bldg 190, Wright Patterson AFB, OH, US, 45433-7604 N1 - Accession Number: 2011-18810-012. Partial author list: First Author & Affiliation: Alarcon, Gene M.; Air Force Research Laboratory, Wright Patterson AFB, OH, US. Release Date: 20111010. Correction Date: 20141215. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Employee Attitudes; Job Characteristics; Occupational Stress. Minor Descriptor: Human Resource Management. Classification: Personnel Attitudes & Job Satisfaction (3650). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Maslach Burnout Inventory—Exhaustion Subscale; Maslach Burnout Inventory—Cynicism Subscale; Maslach Burnout Inventory—Reduced Personal Accomplishment Subscale; Bergen Burnout Inventory; Oldenburg Burnout Inventory DOI: 10.1037/t01688-000; Burnout Measure DOI: 10.1037/t30443-000. Methodology: Meta Analysis. References Available: Y. Page Count: 14. Issue Publication Date: Oct, 2011. Publication History: First Posted Date: Mar 17, 2011; First Submitted Date: Feb 10, 2011. Copyright Statement: All rights reserved. Elsevier Inc. 2011. AB - A meta-analysis was conducted on job demands, resources, and attitudes and their relation with burnout in regard to the COR theory. The version of the Maslach Burnout Inventory used was explored as a moderator of the aforementioned variables. Results suggest that higher demands, lower resources, and lower adaptive organizational attitudes are associated with burnout. In particular, results of the current study show stronger relations than previous meta-analysis (Lee & Ashforth, 1996) have suggested. The scale type also provided some evidence of moderation, with stronger effects found in samples that utilized the MBI-HSS. Implications of the findings in relation to the COR theory and future research directions to clarify the relation between job demands, job resources, organizational attitudes and burnout are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - job demands KW - burnout KW - organizational attitudes KW - job resources KW - 2011 KW - Employee Attitudes KW - Job Characteristics KW - Occupational Stress KW - Human Resource Management KW - 2011 DO - 10.1016/j.jvb.2011.03.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-18810-012&site=ehost-live&scope=site UR - Gene.alarcon.ctr@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-20536-002 AN - 2012-20536-002 AU - Gunzelmann, Glenn T1 - Introduction to the topic on modeling spatial cognition. JF - Topics in Cognitive Science JO - Topics in Cognitive Science JA - Top Cogn Sci Y1 - 2011/10// VL - 3 IS - 4 SP - 628 EP - 631 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 1756-8757 SN - 1756-8765 AD - Gunzelmann, Glenn, Air Force Research Laboratory, 711 HPW⁄ RHAC, 2620 Q Street, Building 852, Wright-Patterson AFB, US, 45433-7905 N1 - Accession Number: 2012-20536-002. PMID: 25164501 Partial author list: First Author & Affiliation: Gunzelmann, Glenn; Air Force Research Laboratory, Wright-Patterson AFB, OH, US. Release Date: 20120903. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Processes; Spatial Perception. Minor Descriptor: Simulation. Classification: Cognitive Processes (2340). Population: Human (10). References Available: Y. Page Count: 4. Issue Publication Date: Oct, 2011. Publication History: Accepted Date: May 30, 2011; First Submitted Date: May 10, 2011. Copyright Statement: All rights reserved. Cognitive Science Society, Inc. 2011. AB - Our ability to process spatial information is fundamental for understanding and interacting with the environment, and it pervades other components of cognitive functioning from language to mathematics. Moreover, technological advances have produced new capabilities that have created research opportunities and astonishing applications. In this Topic on Modeling Spatial Cognition, research crossing a variety of disciplines and methodologies is described, all focused on developing models to represent the capacities and limitations of human spatial cognition. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - spatial cognition KW - cognitive models KW - 2011 KW - Cognitive Processes KW - Spatial Perception KW - Simulation KW - 2011 DO - 10.1111/j.1756-8765.2011.01160.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-20536-002&site=ehost-live&scope=site UR - glenn.gunzelmann@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-20536-009 AN - 2012-20536-009 AU - Gunzelmann, Glenn AU - Lyon, Don R. T1 - Representations and processes of human spatial competence. JF - Topics in Cognitive Science JO - Topics in Cognitive Science JA - Top Cogn Sci Y1 - 2011/10// VL - 3 IS - 4 SP - 741 EP - 759 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 1756-8757 SN - 1756-8765 AD - Gunzelmann, Glenn, Cognitive Models and Agents Branch, 711 HPW⁄ RHAC, 2620 Q Street, Building 852, Rm. 3-312, Wright Patterson AFB, US, 45433-7905 N1 - Accession Number: 2012-20536-009. PMID: 25164508 Partial author list: First Author & Affiliation: Gunzelmann, Glenn; Air Force Research Laboratory, US. Release Date: 20120903. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Conference Information: Annual Meeting of the Cognitive Science Society, 2006. Conference Note: Portions of this research have been presented at the aforementioned conference and, the 17th Conference on Behavior Representation in Modeling and Simulation (2008), the International Conference on Cognitive Modeling (2009), and Spatial Cognition 2006. Major Descriptor: Cognitive Processes; Spatial Perception. Minor Descriptor: Competence. Classification: Cognitive Processes (2340). Population: Human (10). References Available: Y. Page Count: 19. Issue Publication Date: Oct, 2011. Publication History: Accepted Date: Feb 1, 2011; Revised Date: Jan 9, 2011; First Submitted Date: Dec 4, 2009. Copyright Statement: All rights reserved. Cognitive Science Society, Inc. 2011. AB - This article presents an approach to understanding human spatial competence that focuses on the representations and processes of spatial cognition and how they are integrated with cognition more generally. The foundational theoretical argument for this research is that spatial information processing is central to cognition more generally, in the sense that it is brought to bear ubiquitously to improve the adaptivity and effectiveness of perception, cognitive processing, and motor action. We describe research spanning multiple levels of complexity to understand both the detailed mechanisms of spatial cognition, and how they are utilized in complex, naturalistic tasks. In the process, we discuss the critical role of cognitive architectures in developing a consistent account that spans this breadth, and we note some areas in which the current version of a popular architecture, ACT-R, may need to be augmented. Finally, we suggest a framework for understanding the representations and processes of spatial competence and their role in human cognition generally. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - human spatial competence KW - spatial cognition KW - 2011 KW - Cognitive Processes KW - Spatial Perception KW - Competence KW - 2011 U1 - Sponsor: Air Force Research Laboratory (AFRL), Warfighter Readiness Research Division. Recipients: No recipient indicated U1 - Sponsor: Air Force Office of Scientific Research (AFOSR). Grant: 05HE06COR; 10RH06COR. Recipients: No recipient indicated DO - 10.1111/j.1756-8765.2011.01153.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-20536-009&site=ehost-live&scope=site UR - glenn.gunzelmann@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-27239-002 AN - 2011-27239-002 AU - Myers, Christopher W. AU - Gray, Wayne D. AU - Sims, Chris R. T1 - The insistence of vision: Why do people look at a salient stimulus when it signals target absence? JF - Visual Cognition JO - Visual Cognition JA - Vis cogn Y1 - 2011/10// VL - 19 IS - 9 SP - 1122 EP - 1157 CY - United Kingdom PB - Taylor & Francis SN - 1350-6285 SN - 1464-0716 AD - Myers, Christopher W., Air Force Research Laboratory, 2558 Fifth Street Bldg. 852, Wright-Patterson, OH, US, 45433 N1 - Accession Number: 2011-27239-002. Partial author list: First Author & Affiliation: Myers, Christopher W.; Air Force Research Laboratory, Wright-Patterson, OH, US. Release Date: 20120102. Correction Date: 20120618. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Conference Information: Annual meeting of the Cognitive Science Society, 26th, 2004, Chicago, IL, US. Grant Information: Gray, Wayne D. Conference Note: Portions of this research were reported at the aforementioned conference. Major Descriptor: Adaptation; Time Perception; Visual Displays; Visual Perception. Classification: Visual Perception (2323). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 36. Issue Publication Date: Oct, 2011. Copyright Statement: Psychology Press. 2011. AB - Researchers and practitioners across many fields would benefit from the ability to predict human search time in complex visual displays. However, a missing element in our ability to predict search time is our ability to quantify the exogenous attraction of visual objects in terms of their impact on search time. The current work represents an initial step in this direction. We present two experiments using a quadrant search task to investigate how exogenous and endogenous factors influence human visual search. In Experiment 1, we measure the oculomotor capture—or the tendency of a stimulus to elicit a saccade—of a salient quadrant under conditions in which the salient quadrant does not predict target location. Despite the irrelevance of quadrant salience, we find that subjects persist in making saccades towards the salient quadrant at above-chance levels. We then present a Bayesian-based ideal performer model that predicts search time and oculomotor capture when the salient quadrant never contains the search target. Experiment 2 tested the predictions of the ideal performer model and revealed human performance to be in close correspondence with the model. We conclude that, in our speeded search task, the influence of an exogenous attractor on saccades can be quantified in terms of search time costs and, when these costs are considered, both search time and search behaviour reflect a boundedly optimal adaptation to the cost structure of the environment. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - visual perception KW - visual displays KW - time perception KW - adaptation KW - 2011 KW - Adaptation KW - Time Perception KW - Visual Displays KW - Visual Perception KW - 2011 U1 - Sponsor: US Air Force Office of Scientific Research, US. Grant: F49620-03-1-0143. Recipients: Gray, Wayne D. U1 - Sponsor: Office of Naval Research. Grant: N000140310046. Recipients: Gray, Wayne D. DO - 10.1080/13506285.2011.614379 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-27239-002&site=ehost-live&scope=site UR - ORCID: 0000-0002-1704-7433 UR - UR - christopher.myers2@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Posgai, Ryan AU - Cipolla-McCulloch, Caitlin B. AU - Murphy, Kyle R. AU - Hussain, Saber M. AU - Rowe, John J. AU - Nielsen, Mark G. T1 - Differential toxicity of silver and titanium dioxide nanoparticles on Drosophila melanogaster development, reproductive effort, and viability: Size, coatings and antioxidants matter JO - Chemosphere JF - Chemosphere Y1 - 2011/09/15/ VL - 85 IS - 1 M3 - Article SP - 34 EP - 42 SN - 00456535 AB - Abstract: Silver and titanium dioxide nanoparticles are known to induce oxidative stress in vitro and in vivo. Here we test if they impact development, mating success, and survivorship in Drosophila melanogaster, and if so, if these effects are reversible by antioxidants. Ingestion of nanotitanium dioxide during the larval stage of the life cycle showed no effects on development or survivorship, up to doses of 200μgmL−1. Conversely, ingestion of nanosilver had major dose, size, and coating-dependent effects on each of these aspects of life history. Each of these effects was partially or fully reversible by vitamin C. Larvae growing on nanosilver supplemented with vitamin C showed a greater than twofold increase in survivorship compared to flies reared on nanosilver alone, and a threefold increase in mating success. Vitamin C also rescued cuticular and pigmentation defects in nanosilver fed flies. Biochemical assays of superoxide dismutase and glutathione show these markers respond to nanotitanium dioxide and nanosilver induced oxidative stress, and this response is reduced by vitamin C. These results indicate that life history effects of nanosilver ingestion result from oxidative stress, and suggest antioxidants as a potential remediation for nanosilver toxicity. Conversely, the lack of nanotitanium dioxide life history toxicity shows that oxidative stress does not necessarily result in whole organism effects, and argues that nanoparticle toxicity needs to be examined at different levels of biological organization. [Copyright &y& Elsevier] AB - Copyright of Chemosphere is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Metals -- Toxicology KW - Colloidal silver KW - Titanium dioxide KW - Drosophila melanogaster KW - Metal coating KW - Antioxidants KW - Vitamin C KW - Oxidative stress KW - Drosophila KW - Nanoparticle coating KW - Silver nanoparticles KW - Titanium dioxide nanoparticles N1 - Accession Number: 64714151; Posgai, Ryan 1; Cipolla-McCulloch, Caitlin B. 1; Murphy, Kyle R. 1; Hussain, Saber M. 2; Rowe, John J. 1; Nielsen, Mark G. 1; Email Address: Mark.Nielsen@notes.udayton.edu; Affiliations: 1: Department of Biology, Center for Tissue Regeneration and Engineering, University of Dayton, Dayton, OH 45469, USA; 2: Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force Research Laboratory, Wright–Patterson Air Force Base, Dayton, OH 45433, USA; Issue Info: Sep2011, Vol. 85 Issue 1, p34; Thesaurus Term: Metals -- Toxicology; Subject Term: Colloidal silver; Subject Term: Titanium dioxide; Subject Term: Drosophila melanogaster; Subject Term: Metal coating; Subject Term: Antioxidants; Subject Term: Vitamin C; Subject Term: Oxidative stress; Author-Supplied Keyword: Drosophila; Author-Supplied Keyword: Nanoparticle coating; Author-Supplied Keyword: Silver nanoparticles; Author-Supplied Keyword: Titanium dioxide nanoparticles; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325411 Medicinal and Botanical Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.chemosphere.2011.06.040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=64714151&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Murnieks, Charles Y. AU - Allen, Scot T. AU - Ferrante, Claudia J. T1 - Combating the effects of turnover: Military lessons learned from project teams rebuilding Iraq JO - Business Horizons JF - Business Horizons Y1 - 2011/09//Sep/Oct2011 VL - 54 IS - 5 M3 - Article SP - 481 EP - 491 SN - 00076813 AB - Abstract: The literature concerning turnover has traditionally been composed of studies and analyses which assume that turnover rates are malleable, and can be reduced. We take the opposite position and contend that turnover rates for certain organizations are not variable, but rather remain fixed. Is it possible, then, to reduce the deleterious effects of turnover without reducing the actual churn of individuals? To answer this question, we draw from experiences of the U.S. military during Operation Iraqi Freedom, in order to learn from its methods of dealing with high personnel turnover during the management of projects. Specifically, we offer four best practices that reduce the negative effects of turnover, while allowing the rate itself to remain constant. These best practices aim toward sharing the knowledge and mental models critical for sustained operations, to insulate the organization against the departure of key personnel. Herein, we demonstrate how efficient operations can be maintained amidst high churn rates. [Copyright &y& Elsevier] AB - Copyright of Business Horizons is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LABOR turnover KW - BEST practices KW - PROJECT management KW - IRAQ War, 2003-2011 KW - UNITED States -- Armed Forces KW - IRAQ KW - UNITED States KW - Mental models KW - Military KW - Personnel rotation KW - Turnover N1 - Accession Number: 66694735; Murnieks, Charles Y.; Email Address: charles.murnieks@usafa.edu; Allen, Scot T. 1; Email Address: scot.allen@usafa.edu; Ferrante, Claudia J. 1; Email Address: claudia.ferrante@usafa.edu; Affiliations: 1: United States Air Force Academy, 2354 Fairchild Drive, USAFA, CO 80840, U.S.A.; Issue Info: Sep/Oct2011, Vol. 54 Issue 5, p481; Thesaurus Term: LABOR turnover; Thesaurus Term: BEST practices; Thesaurus Term: PROJECT management; Subject Term: IRAQ War, 2003-2011; Subject Term: UNITED States -- Armed Forces; Subject: IRAQ; Subject: UNITED States; Author-Supplied Keyword: Mental models; Author-Supplied Keyword: Military; Author-Supplied Keyword: Personnel rotation; Author-Supplied Keyword: Turnover; NAICS/Industry Codes: 541619 Other management consulting services; NAICS/Industry Codes: 541611 Administrative Management and General Management Consulting Services; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; NAICS/Industry Codes: 928110 National Security; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.bushor.2011.05.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=66694735&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Bolt, Paul J. AD - US Air Force Academy T1 - Contemporary Sino-Southeast Asian Relations JO - China: An International Journal JF - China: An International Journal Y1 - 2011/09// VL - 9 IS - 2 SP - 276 EP - 295 SN - 02197472 N1 - Accession Number: 1264906; Geographic Descriptors: China; S.E. Asia; Geographic Region: Asia; Publication Type: Journal Article; Update Code: 201111 N2 - China's growth has brought important benefits to Southeast Asia. China's "new diplomacy" has accommodated many of the region's political concerns and its economic expansion has been an engine of growth for Southeast Asia. However, China's rise brings challenges as well. China's rapid naval build-up, more intensified disputes in the South China Sea, environmental problems and questions over China's ultimate goals create concerns in the region. Southeast Asia's strategy has been to accommodate China's rise while striving to maintain the American position in the region. Southeast Asia has been successful in this strategy, although this balance will be increasingly difficult as China's power increases. KW - National Security; Economic Nationalism F52 KW - National Security and War H56 KW - Formal and Informal Sectors; Shadow Economy; Institutional Arrangements O17 KW - International Linkages to Development; Role of International Organizations O19 L3 - http://www.eai.nus.edu.sg/CIJ_Issues.htm UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1264906&site=ehost-live&scope=site UR - http://www.eai.nus.edu.sg/CIJ_Issues.htm DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Tandon, G.P. AU - Ragland, W.R. T1 - Influence of laminate lay-up on oxidation and damage growth: Isothermal aging JO - Composites: Part A, Applied Science & Manufacturing JF - Composites: Part A, Applied Science & Manufacturing Y1 - 2011/09// VL - 42 IS - 9 M3 - Article SP - 1127 EP - 1137 SN - 1359835X AB - Abstract: The thermo-oxidative behavior of a composite is significantly different from that of the constituents as the composite microstructure, including the fiber/matrix interphase/interface, architecture and ply lay-up introduce anisotropy in the diffusion and oxidation behavior. In this work, light microscopy and scanning electron microscopy techniques are used to characterize the oxidative process in laminated carbon fiber-reinforced polyimide composites. Four different composites are considered, namely, unidirectional [0]16T, quasi-isotropic [0/±45/90]2S, cross-ply [0/90]4S, and angle-ply [±45]2S laminates. The observed anisotropy in composite oxidation is explained by carefully monitoring the development and growth of damage through the use of fluorescence imaging using dye impregnation. It is shown that the oxidation behavior of a laminate is strongly dependent on the ply stacking sequence, while alternative pathways for transport of oxygen into the interior of the composite are fiber–matrix debonds and matrix cracks that propagate with the oxidation front. [Copyright &y& Elsevier] AB - Copyright of Composites: Part A, Applied Science & Manufacturing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAMINATED materials KW - OXIDATION KW - MICROSTRUCTURE KW - ANISOTROPY KW - POLYMERIC composites KW - MICROSCOPY KW - ENVIRONMENTAL degradation KW - FRACTURE mechanics KW - A. Polymer-matrix composites (PMCs) KW - B. Environmental degradation KW - D. Optical microscopy KW - Thermo-oxidation N1 - Accession Number: 62274514; Tandon, G.P. 1,2; Email Address: Gyaneshwar.Tandon@wpafb.af.mil; Ragland, W.R. 1,2; Affiliations: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXBC, Wright-Patterson Air Force Base, OH 45433, United States; 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0060, United States; Issue Info: Sep2011, Vol. 42 Issue 9, p1127; Subject Term: LAMINATED materials; Subject Term: OXIDATION; Subject Term: MICROSTRUCTURE; Subject Term: ANISOTROPY; Subject Term: POLYMERIC composites; Subject Term: MICROSCOPY; Subject Term: ENVIRONMENTAL degradation; Subject Term: FRACTURE mechanics; Author-Supplied Keyword: A. Polymer-matrix composites (PMCs); Author-Supplied Keyword: B. Environmental degradation; Author-Supplied Keyword: D. Optical microscopy; Author-Supplied Keyword: Thermo-oxidation; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.compositesa.2011.04.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=62274514&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Lucia, David J. T1 - Cruising in afterburner: Air force fuel use and emerging energy policy JO - Energy Policy JF - Energy Policy Y1 - 2011/09// VL - 39 IS - 9 M3 - Article SP - 5356 EP - 5365 SN - 03014215 AB - Abstract: Operational and mission efficiency were estimated for Air Force fighters, bombers and transports from fuel use data from 2001 through 2008 as reported in the Air Force Total Cost of Ownership (AFTOC) database. This analysis estimated efficiency in terms of the best performance theoretically possible for each platform based upon the energy available in the fuel expended. Operational efficiency considered aircraft operations in general, without regard for the type of mission. Mission efficiency only considered use of allocated fuel for combat (non-training) sorties. The cost associated with fuel inefficiency of the combined fighter, bomber and tanker force were estimated based on the fiscal year 2008 costs of fuel, fully burdened to include the cost of aerial refueling. The total cost of operational inefficiency was estimated at $5 billion per year. The fully burdened cost of mission inefficiency added an additional $3.6 billion for a total per year cost estimate of $8.6 billion. This represents 21.5% of the $40 billion portion of the 2009 budget dedicated to modernization. A business case for force-structure change is presented, which describes how these cost savings can be leveraged for modernization. [Copyright &y& Elsevier] AB - Copyright of Energy Policy is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUEL KW - Energy policy KW - Energy consumption KW - Cost effectiveness KW - Afterburners KW - Jet planes KW - Air forces -- Equipment KW - Estimation theory KW - Bombers (Airplanes) KW - Cost benefit KW - Fuel efficiency KW - Military N1 - Accession Number: 63568586; Lucia, David J. 1; Email Address: david.j.lucia@comcast.net; Affiliations: 1: United States Air Force, USA; Issue Info: Sep2011, Vol. 39 Issue 9, p5356; Thesaurus Term: FUEL; Thesaurus Term: Energy policy; Thesaurus Term: Energy consumption; Thesaurus Term: Cost effectiveness; Subject Term: Afterburners; Subject Term: Jet planes; Subject Term: Air forces -- Equipment; Subject Term: Estimation theory; Subject Term: Bombers (Airplanes); Author-Supplied Keyword: Cost benefit; Author-Supplied Keyword: Fuel efficiency; Author-Supplied Keyword: Military; NAICS/Industry Codes: 926130 Regulation and Administration of Communications, Electric, Gas, and Other Utilities; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.enpol.2011.05.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=63568586&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 104679830 T1 - Novel use of the Soehendra stent extractor for pancreatic stone lithotripsy. AU - Molloy, Jeffrey W. AU - Mallat, Damien B. Y1 - 2011/09// N1 - Accession Number: 104679830. Language: English. Entry Date: 20110926. Revision Date: 20150711. Publication Type: Journal Article; case study; diagnostic images; letter. Journal Subset: Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Perioperative Care. NLM UID: 0010505. KW - Lithotripsy -- Methods KW - Pancreatic Diseases -- Therapy KW - Equipment and Supplies KW - Female KW - Middle Age KW - Texas SP - 725 EP - 726 JO - Gastrointestinal Endoscopy JF - Gastrointestinal Endoscopy JA - GASTROINTEST ENDOSC VL - 74 IS - 3 CY - New York, New York PB - Elsevier Science SN - 0016-5107 AD - Department of Internal Medicine, Division of Gastroenterology, Wilford Hall United States Air Force Medical Center, San Antonio, Texas, USA AD - Department of Internal Medicine, Division of Gastroenterology, Baylor University Medical Center, Dallas, Texas, USA U2 - PMID: 21872724. DO - 10.1016/j.gie.2011.04.035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104679830&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Baginski, Thomas A. AU - Dean, Robert Neal AU - Wild, Edwin J. T1 - Micromachined Planar Triggered Spark Gap Switch. JO - IEEE Transactions on Components, Packaging & Manufacturing Technology JF - IEEE Transactions on Components, Packaging & Manufacturing Technology Y1 - 2011/09// VL - 1 IS - 9 M3 - Article SP - 1480 EP - 1485 SN - 21563950 AB - High voltage switches capable of operating at high speeds with high current levels are used in a variety of applications in commercial and government systems. This paper discusses the fabrication and characterization of a novel micromachined planar triggered spark gap switch. The switch provides a low cost alternative to conventional triggered spark gap switches. The structure is designed for direct integration into the strip-line geometries used in a conventional capacitive discharge unit. The geometry of the device was selected to minimize parasitic impedances associated with conventional firing circuits. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Components, Packaging & Manufacturing Technology is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROMACHINING KW - ENERGY gaps (Physics) KW - SWITCHING circuits KW - MICROFABRICATION KW - ELECTRIC spark KW - ELECTRIC impedance KW - CAPACITORS KW - ELECTRIC discharges KW - Capacitors KW - Discharges KW - Electrodes KW - Explosives KW - High speed KW - high voltage switch KW - low parasitic impedance KW - low turn-on voltage KW - microelectromechanical systems KW - Sparks KW - Substrates KW - Switches N1 - Accession Number: 69665513; Baginski, Thomas A. 1; Dean, Robert Neal 1; Wild, Edwin J. 2; Affiliations: 1: Department of Electrical and Computer Engineering, Auburn University, Auburn, AL, USA; 2: Air Force Research Laboratory, United States Air Force, Eglin AFB, FL, USA; Issue Info: Sep2011, Vol. 1 Issue 9, p1480; Subject Term: MICROMACHINING; Subject Term: ENERGY gaps (Physics); Subject Term: SWITCHING circuits; Subject Term: MICROFABRICATION; Subject Term: ELECTRIC spark; Subject Term: ELECTRIC impedance; Subject Term: CAPACITORS; Subject Term: ELECTRIC discharges; Author-Supplied Keyword: Capacitors; Author-Supplied Keyword: Discharges; Author-Supplied Keyword: Electrodes; Author-Supplied Keyword: Explosives; Author-Supplied Keyword: High speed; Author-Supplied Keyword: high voltage switch; Author-Supplied Keyword: low parasitic impedance; Author-Supplied Keyword: low turn-on voltage; Author-Supplied Keyword: microelectromechanical systems; Author-Supplied Keyword: Sparks; Author-Supplied Keyword: Substrates; Author-Supplied Keyword: Switches; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 335313 Switchgear and Switchboard Apparatus Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TCPMT.2011.2142399 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=69665513&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - CHABAK, KELSON D. AU - WALKER JR., DENNIS E. AU - CRESPO, ANTONIO AU - TREJO, MANUEL AU - KOSSLER, MAURICIO AU - TETLAK, STEVE AU - GILLESPIE, JAMES K. AU - FITCH, ROBERT C. AU - VIA, GLEN D. AU - DABIRAN, AMIR AU - WOWCHAK, A.M. AU - CHOW, P.P. T1 - SMALL SIGNAL AND DC CHARACTERISTICS OF ULTRA-THIN GaN/AlN/GaN HFETs. JO - International Journal of High Speed Electronics & Systems JF - International Journal of High Speed Electronics & Systems Y1 - 2011/09// VL - 20 IS - 3 M3 - Article SP - 385 EP - 392 SN - 01291564 AB - This paper presents high performance device results using an ultra-thin AlN/GaN structure on sapphire substrate with a 100-nm T-gate. Excellent dc and RF characteristics are reported, including an extrinsic transconductance of 500 mS/mm and an extrinsic ft/fmax(U) ratio of 78/111-GHz which is among the highest reported for AlN/GaN HFETs. Low gate leakage results are also presented despite the small barrier thickness and absence of a gate dielectric. Modeling of the small signal parameters is also discussed to gain an understanding of the limiting and contributing performance factors. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of High Speed Electronics & Systems is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERFORMANCE evaluation KW - GALLIUM nitride KW - HETEROSTRUCTURES KW - SIGNAL-to-noise ratio KW - ELECTRON mobility KW - POLARIZATION (Electricity) KW - MODULATION-doped field-effect transistors KW - heterostructure field effect transistor KW - high electron mobility transistor KW - III-nitride polarization KW - small signal parameters N1 - Accession Number: 76609244; CHABAK, KELSON D. 1; Email Address: kelson.chabak@wpafb.af.mil; WALKER JR., DENNIS E. 1; CRESPO, ANTONIO 1; TREJO, MANUEL 1; KOSSLER, MAURICIO 1; TETLAK, STEVE 1; GILLESPIE, JAMES K. 1; FITCH, ROBERT C. 1; VIA, GLEN D. 1; DABIRAN, AMIR 2; Email Address: adabiran@svta.com; WOWCHAK, A.M. 2; CHOW, P.P. 2; Affiliations: 1: Sensors Directorate, US Air Force Research Laboratory, 2241 Avionics Circle, Wright-Patterson AFB, OH 45433, USA; 2: SVT Associates, Inc., 7620 Executive Drive, Eden Prairie, MN 55344, USA; Issue Info: Sep2011, Vol. 20 Issue 3, p385; Thesaurus Term: PERFORMANCE evaluation; Subject Term: GALLIUM nitride; Subject Term: HETEROSTRUCTURES; Subject Term: SIGNAL-to-noise ratio; Subject Term: ELECTRON mobility; Subject Term: POLARIZATION (Electricity); Subject Term: MODULATION-doped field-effect transistors; Author-Supplied Keyword: heterostructure field effect transistor; Author-Supplied Keyword: high electron mobility transistor; Author-Supplied Keyword: III-nitride polarization; Author-Supplied Keyword: small signal parameters; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=76609244&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Cycyota, Cynthia1, cynthia.cycyota@usafa.edu AU - Ferrante, Claudia1, claudia.ferrante@usafa.edu AU - Green, Steven1, steve.green@usafa.edu AU - Heppard, Kurt1, kurt.heppard@usafa.edu AU - Karolick, Dorri1, dorri.karrolick@usafa.edu T1 - Leaders of Character: The USAFA Approach to Ethics Education and Leadership Development. JO - Journal of Academic Ethics JF - Journal of Academic Ethics J1 - Journal of Academic Ethics PY - 2011/09// Y1 - 2011/09// VL - 9 IS - 3 CP - 3 M3 - Article SP - 177 EP - 192 SN - 15701727 AB - We describe the educational character and leadership development processes used by the United States Air Force Academy that other educational institutions may find useful. Our processes include an integrated educational curriculum designed to complement and integrate the experiential learning that results in achieving specific organizational outcomes, co-curricular activities in cadet living, and a specific focus on the ethical development of leaders' respect for human dignity and cultural competency as well as the mechanisms to assess and refine our processes. [ABSTRACT FROM AUTHOR] KW - Ethics -- Study & teaching KW - Experiential learning KW - Military education KW - Student leadership KW - Cultural competence KW - United States Air Force Academy N1 - Accession Number: 63899297; Authors:Cycyota, Cynthia 1 Email Address: cynthia.cycyota@usafa.edu; Ferrante, Claudia 1 Email Address: claudia.ferrante@usafa.edu; Green, Steven 1 Email Address: steve.green@usafa.edu; Heppard, Kurt 1 Email Address: kurt.heppard@usafa.edu; Karolick, Dorri 1 Email Address: dorri.karrolick@usafa.edu; Affiliations: 1: United States Air Force Academy, 2354 Fairchild Drive, Ste 6-H130 USAF Academy 80840 USA; Subject: Ethics -- Study & teaching; Subject: United States Air Force Academy; Subject: Experiential learning; Subject: Cultural competence; Subject: Military education; Subject: Student leadership; Author-Supplied Keyword: Ethics education; Author-Supplied Keyword: Leader development; Number of Pages: 16p; Illustrations: 3 Diagrams, 1 Chart; Record Type: Article L3 - 10.1007/s10805-011-9138-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=63899297&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - AU - Harris, Albert L.1, harrisal@appstate.edu AU - Lang, Michael2, Michael.Lang@nuigalway.ie AU - Yates, Dave3, dyatesmd@gmail.com AU - Kruck, S. E.4, kruckse@jmu.edu T1 - Incorporating Ethics and Social Responsibility in IS Education. JO - Journal of Information Systems Education JF - Journal of Information Systems Education J1 - Journal of Information Systems Education PY - 2011///Fall2011 Y1 - 2011///Fall2011 VL - 22 IS - 3 CP - 3 M3 - Article SP - 183 EP - 189 SN - 10553096 AB - This paper discusses the importance of ethics and social responsibility in information systems (IS) education. The many public scandals of corporate misconduct have increased the need for more emphasis to be placed on ethics and ethical issues in IS education. The authors describe how the inclusion of ethics and social responsibility in the IS curriculum enhances IS education and discuss the core issues to be addressed, including: professional conduct, privacy, intellectual property, cybercrime, impact on humans, freedom of speech, and "Green" computing issues. The authors also introduce the papers presented in this special issue and challenge IS educators to increase their emphasis on ethics and social responsibility in their classes. [ABSTRACT FROM AUTHOR] KW - Information storage & retrieval systems KW - Privacy KW - Intellectual property KW - Computer crimes KW - Social responsibility KW - Scandals KW - Ethics -- Study & teaching KW - Professionalism KW - Freedom of speech KW - Curriculum planning KW - Curriculum design & development KW - Ethics N1 - Accession Number: 69713585; Authors: Harris, Albert L. 1 Email Address: harrisal@appstate.edu; Lang, Michael 2 Email Address: Michael.Lang@nuigalway.ie; Yates, Dave 3 Email Address: dyatesmd@gmail.com; Kruck, S. E. 4 Email Address: kruckse@jmu.edu; Affiliations: 1: Department of Computer Information Systems, John A. Walker College of Business, Appalachian State University, Boone, NC, USA; 2: Business Information Systems Group, J. E. Cairnes School of Business & Economics, National University of Ireland - Galway, Ireland; 3: United States Air Force; 4: Computer Information Systems Department, College of Busines, James Madison University, Harrisonburg, VA, USA; Subject: Social responsibility; Subject: Information storage & retrieval systems; Subject: Scandals; Subject: Ethics -- Study & teaching; Subject: Professionalism; Subject: Freedom of speech; Subject: Curriculum planning; Subject: Privacy; Subject: Intellectual property; Subject: Computer crimes; Author-Supplied Keyword: Curriculum design & development; Author-Supplied Keyword: Ethics; Number of Pages: 7p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=69713585&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - Head, William P. T1 - "GUNSHIPS AND 'DING-BATS': U.S. MILITARY OPERATIONS DURING 'JUST CAUSE'.". JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 2011///Fall2011 VL - 28 IS - 2 M3 - Article SP - 87 EP - 105 SN - 87553449 AB - The article discusses the 1989 U.S. military intervention into Panama known as Operation Just Cause. It provides an overview of U.S. foreign policy in the 1980s, especially in regards to military actions and humanitarian aid, during the administrations of U.S. Presidents Ronald Reagan and George H. W. Bush. An overview of American military policy from 1981 to 1990, including congressional legislation overseeing the organization of special forces from all U.S. Armed Forces groups, is presented. Other topics include a discussion of the regime of Panamanian leader Manuel Noriega, Panama's political stability, anti-American actions in Panama during the 1980s, and Noriega's ties to Colombian drug cartels. KW - PANAMA -- History -- American Invasion, 1989 KW - MILITARY policy KW - POLITICAL stability KW - UNITED States -- Politics & government -- 1945-1989 KW - PANAMA -- Foreign relations -- United States KW - UNITED States KW - PANAMA N1 - Accession Number: 67020731; Head, William P. 1; Email Address: william.head@robins.af.mil; Affiliations: 1 : United States Air Force, Area of Specialization: U.S. Military History/US. Foreign Relations with east and Southeast Asia; Source Info: Fall2011, Vol. 28 Issue 2, p87; Historical Period: 1989; Subject Term: PANAMA -- History -- American Invasion, 1989; Subject Term: MILITARY policy; Subject Term: POLITICAL stability; Subject Term: UNITED States -- Politics & government -- 1945-1989; Subject Term: PANAMA -- Foreign relations -- United States; Subject: UNITED States; Subject: PANAMA; Number of Pages: 19p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hia&AN=67020731&site=ehost-live&scope=site DP - EBSCOhost DB - hia ER - TY - JOUR AU - Eaton, Melinda AU - Marshall, Stephen W. AU - Fujimoto, Scott AU - Gould, Philip L. AU - Poole, Charles AU - Richardson, David B. T1 - Review of Non-Battle Injuries in Air Force Personnel Deployed in Support of Operation Enduring Freedom and Operation Iraqi Freedom. JO - Military Medicine JF - Military Medicine Y1 - 2011/09// VL - 176 IS - 9 M3 - Article SP - 1007 EP - 1014 PB - AMSUS SN - 00264075 AB - This study examines non-battle injuries among U.S. Air Force members deployed during Operations Iraqi and Enduring Freedom. A cohort of 275,843 Active Duty, Guard, and Reserve members were identified for the period September 11, 2001 through October 31, 2006. Data on injuries were obtained from electronic medical records and deployment time was obtained from manpower records. Poisson regression was used to estimate adjusted incidence rate ratios (IRRs). The most common non-battle injuries were sprains and strains (53%) followed by open wounds (27%). Guard and Reserve members tended to have a lower rate of orthopedic non-battle injuries than Active Duty members in crude analyses and after adjustment for age, previous deployment, sex, race/ethnicity, and occupation (IRR = 0.95: 95% CI = 0.89-1.02 and IRR = 0.85: 95% CI = 0.77-0.93). Results from this study are intended to facilitate further research of potential differences between Air Force components to reduce non-battle injuries in a deployed environment. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UNITED States. Air Force KW - AIRMEN -- Wounds & injuries KW - MEDICAL records KW - SPRAINS KW - DEPLOYMENT (Military strategy) KW - IRAQ War, 2003-2011 KW - UNITED States N1 - Accession Number: 66252513; Eaton, Melinda 1; Marshall, Stephen W. 2; Fujimoto, Scott 3; Gould, Philip L. 4; Poole, Charles 2; Richardson, David B. 2; Source Information: Sep2011, Vol. 176 Issue 9, p1007; Subject: UNITED States. Air Force; Subject: AIRMEN -- Wounds & injuries; Subject: MEDICAL records; Subject: SPRAINS; Subject: DEPLOYMENT (Military strategy); Subject: IRAQ War, 2003-2011; Geographic Terms: UNITED States; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=66252513&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 104702346 T1 - Review of non-battle injuries in Air Force personnel deployed in support of Operation Enduring Freedom and Operation Iraqi Freedom. AU - Eaton M AU - Marshall SW AU - Fujimoto S AU - Gould PL AU - Poole C AU - Richardson DB Y1 - 2011/09// N1 - Accession Number: 104702346. Language: English. Entry Date: 20111118. Revision Date: 20150711. Publication Type: Journal Article; research. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services. NLM UID: 2984771R. KW - Military Personnel -- Statistics and Numerical Data KW - Wounds and Injuries -- Epidemiology KW - Adolescence KW - Adult KW - Prospective Studies KW - Female KW - Incidence KW - Male KW - Middle Age KW - United States KW - Young Adult SP - 1007 EP - 1014 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 176 IS - 9 CY - Bethesda, Maryland PB - AMSUS AB - This study examines non-battle injuries among U.S. Air Force members deployed during Operations Iraqi and Enduring Freedom. A cohort of 275,843 Active Duty, Guard, and Reserve members were identified for the period September 11, 2001 through October 31, 2006. Data on injuries were obtained from electronic medical records and deployment time was obtained from manpower records. Poisson regression was used to estimate adjusted incidence rate ratios (IRRs). The most common non-battle injuries were sprains and strains (53%) followed by open wounds (27%). Guard and Reserve members tended to have a lower rate of orthopedic non-battle injuries than Active Duty members in crude analyses and after adjustment for age, previous deployment, sex, race/ethnicity, and occupation (IRR = 0.95; 95% CI = 0.89-1.02 and IRR = 0.85; 95% CI = 0.77-0.93). Results from this study are intended to facilitate further research of potential differences between Air Force components to reduce non-battle injuries in a deployed environment. SN - 0026-4075 AD - Epidemiology Consult Service, United States Air Force School of Aerospace Medicine, 1050 Forrer Boulevard, Kettering, OH 45420-1472, USA. U2 - PMID: 21987958. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104702346&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 104676365 T1 - Shared Leadership in the Military: Reality, Possibility, or Pipedream? AU - Lindsay, Douglas R. AU - Day, David V. AU - Halpin, Stanley M. Y1 - 2011/09// N1 - Accession Number: 104676365. Language: English. Entry Date: 20110925. Revision Date: 20150711. Publication Type: Journal Article; review; tables/charts. Journal Subset: Biomedical; Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services; Psychiatry/Psychology. NLM UID: 8915802. KW - Leadership KW - Military Personnel -- Psychosocial Factors KW - Leaders KW - Teamwork KW - Military Personnel KW - Intraprofessional Relations KW - Interpersonal Relations KW - Culture KW - United States Air Force KW - United States Army SP - 528 EP - 549 JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) JA - MILIT PSYCHOL VL - 23 IS - 5 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - Shared leadership involves building a broader and deeper capacity for leadership that goes beyond a formally appointed leader. Several models of team leadership are reviewed, distinguishing between the leadership of teams from leadership in teams. Shared leadership is a variant of the latter in which everyone on the team is responsible for leadership and where leadership emerges through patterned interactions of team members. Overall, shared leadership appears to be a possibility for the military-and one that is needed because of the increasing complexity of missions-but efforts need to be undertaken to incorporate it into formal training and doctrine. SN - 0899-5605 AD - Department of Behavioral Sciences & Leadership, United States Air Force Academy, Colorado Springs, Colorado, USA AD - University of Western Australia Business School, University of Western Australia, Perth, Australia AD - Fort Leavenworth Research Unit, U.S. Army Research Institute for the Behavioral and Social Sciences, Fort Leavenworth, Kansas, USA DO - 10.1080/08995605.2011.600150 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104676365&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Fitzkee, David E. T1 - Religious Speech in the Military: Freedoms and Limitations. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College J1 - Parameters: U.S. Army War College PY - 2011/09// Y1 - 2011/09// VL - 41 IS - 3 M3 - Article SP - 59 EP - 72 SN - 00311723 AB - The article discusses religious speech by members of the U.S. military, with particular focus given to the influence of free speech rights and limitations specific to the military. An overview of laws regarding religious speech in the military is presented, and advice for military leaders on protecting the free speech of their subordinates while enforcing appropriate limits is offered. KW - FREEDOM of speech -- United States KW - MILITARY law KW - FREEDOM of religion -- United States KW - UNITED States N1 - Accession Number: 73781207; Source Information: Autumn2011, Vol. 41 Issue 3, p59; Subject Term: FREEDOM of speech -- United States; Subject Term: MILITARY law; Subject Term: FREEDOM of religion -- United States; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 14p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=73781207&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 104657443 T1 - The functional fidelity of individual differences research: the case for context-matching. AU - Matthews, Gerald AU - Warm, Joel S. AU - Reinerman-Jones, Lauren E. AU - Langheim, Lisa K. AU - Guznov, Svyatoslav AU - Shaw, Tyler H. AU - Finomore, Victor S. Y1 - 2011/09// N1 - Accession Number: 104657443. Language: English. Entry Date: 20110908. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Biomedical; Editorial Board Reviewed; Europe; Expert Peer Reviewed; Peer Reviewed; UK & Ireland. Special Interest: Psychiatry/Psychology. NLM UID: 101163424. KW - Behavioral Research KW - Personality KW - Individuality KW - Cognition KW - Task Performance and Analysis KW - Laboratories KW - Emotions KW - Neurotic Disorders KW - Teamwork KW - Workload KW - Stress KW - Vehicle Operation KW - Models, Theoretical SP - 435 EP - 450 JO - Theoretical Issues in Ergonomics Science JF - Theoretical Issues in Ergonomics Science JA - THEOR ISSUES ERGON SCI VL - 12 IS - 5 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - Applying basic research on individual differences in performance requires a kind of 'functional fidelity'. That is, the laboratory environment must elicit individual differences in cognition and emotion similar to those seen in the operational setting. Studies of conventional personality traits and performance often lack this functional fidelity. Four research directions for enhancing functional fidelity are proposed. First, a greater focus on simulated operational tasks that require cognitive skills is requisite. Second, contexts relevant to specific personality traits, such as social demands, may be simulated in the laboratory. Third, traits linked to a specific performance context, such as vehicle driving, may be developed and validated. Fourth, psychophysiological responses to tasks that reproduce operational cognitive demands may be used as predictors, as exemplified in recent studies of vigilance. Enhancements to functional fidelity will assist human factors practitioners in accommodating the role of individual differences in operator selection, diagnostic monitoring and augmented cognition. SN - 1463-922X AD - Department of Psychology, University of Cincinnati, Cincinnati, OH 45221-0376, USA AD - Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, USA AD - Institute for Simulation and Training, University of Central Florida, Orlando, FL, USA AD - Department of Psychology, George Mason University, Fairfax, VA, USA DO - 10.1080/1463922X.2010.549247 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104657443&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2011-18071-006 AN - 2011-18071-006 AU - Ree, Malcolm James AU - Carretta, Thomas R. T1 - The observation of incremental validity does not always mean unique contribution to prediction. JF - International Journal of Selection and Assessment JO - International Journal of Selection and Assessment Y1 - 2011/09// VL - 19 IS - 3 SP - 276 EP - 279 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0965-075X SN - 1468-2389 AD - Ree, Malcolm James, Our Lady of the Lake University, 411 SW 24th Street, San Antonio, TX, US, 78207-4689 N1 - Accession Number: 2011-18071-006. Partial author list: First Author & Affiliation: Ree, Malcolm James; Our Lady of the Lake University, San Antonio, TX, US. Other Publishers: Blackwell Publishing. Release Date: 20111024. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Employee Attitudes; Employment Discrimination; Personnel Recruitment. Minor Descriptor: Job Satisfaction; Prediction. Classification: Personnel Evaluation & Job Performance (3630). Population: Human (10). References Available: Y. Page Count: 4. Issue Publication Date: Sep, 2011. Copyright Statement: Blackwell Publishing Ltd. 2011. AB - Statistical analyses require proper interpretation. Misinterpretation leads to a lack of understanding of the relationships among variables. Worse, it can lead to misunderstanding of these relationships, which sometimes lead researchers and practitioners to infer the presence of a source of variance that is not present. This is especially true in regression where increased predictiveness from an additional variable may be due to either common or specific variance. In many instances, erroneous interpretation leads to erroneous attribution of the source of the improved prediction. Three examples are provided and methods for detecting specific variance are suggested. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - job satisfaction KW - personnel recruitment KW - employment discrimination KW - employee attitudes KW - 2011 KW - Employee Attitudes KW - Employment Discrimination KW - Personnel Recruitment KW - Job Satisfaction KW - Prediction KW - 2011 DO - 10.1111/j.1468-2389.2011.00556.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-18071-006&site=ehost-live&scope=site UR - mjree@lake.ollusa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-15292-006 AN - 2011-15292-006 AU - Matthews, Gerald AU - Warm, Joel S. AU - Reinerman-Jones, Lauren E. AU - Langheim, Lisa K. AU - Guznov, Svyatoslav AU - Shaw, Tyler H. AU - Finomore, Victor S. T1 - The functional fidelity of individual differences research: The case for context-matching. JF - Theoretical Issues in Ergonomics Science JO - Theoretical Issues in Ergonomics Science JA - Theor Issues Ergon Y1 - 2011/09// VL - 12 IS - 5 SP - 435 EP - 450 CY - United Kingdom PB - Taylor & Francis SN - 1463-922X SN - 1464-536X AD - Matthews, Gerald, Department of Psychology, University of Cincinnati, Cincinnati, OH, US, 45221-0376 N1 - Accession Number: 2011-15292-006. Partial author list: First Author & Affiliation: Matthews, Gerald; Department of Psychology, University of Cincinnati, Cincinnati, OH, US. Release Date: 20120123. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Conference Information: Annual Meeting of the Human Factors and Ergonomics Society, 54th, Sep-Oct, 2010, San Francisco, CA, US. Conference Note: This article is based on a presentation at the aforementioned conference. Major Descriptor: Experimentation; Individual Differences; Personality Traits. Minor Descriptor: Cognition; Emotions. Classification: Personality Traits & Processes (3120). Population: Human (10). References Available: Y. Page Count: 16. Issue Publication Date: Sep, 2011. Publication History: Revised Date: Dec 15, 2010; First Submitted Date: Aug 23, 2010. Copyright Statement: Taylor & Francis. 2011. AB - Applying basic research on individual differences in performance requires a kind of ‘functional fidelity’. That is, the laboratory environment must elicit individual differences in cognition and emotion similar to those seen in the operational setting. Studies of conventional personality traits and performance often lack this functional fidelity. Four research directions for enhancing functional fidelity are proposed. First, a greater focus on simulated operational tasks that require cognitive skills is requisite. Second, contexts relevant to specific personality traits, such as social demands, may be simulated in the laboratory. Third, traits linked to a specific performance context, such as vehicle driving, may be developed and validated. Fourth, psychophysiological responses to tasks that reproduce operational cognitive demands may be used as predictors, as exemplified in recent studies of vigilance. Enhancements to functional fidelity will assist human factors practitioners in accommodating the role of individual differences in operator selection, diagnostic monitoring and augmented cognition. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - fidelity KW - individual differences research KW - cognition KW - emotions KW - 2011 KW - Experimentation KW - Individual Differences KW - Personality Traits KW - Cognition KW - Emotions KW - 2011 DO - 10.1080/1463922X.2010.549247 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-15292-006&site=ehost-live&scope=site UR - Gerald.Matthews@uc.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-23123-004 AN - 2011-23123-004 AU - Alarcon, Gene M. AU - Lyons, Joseph B. T1 - The relationship of engagement and job satisfaction in working samples. JF - The Journal of Psychology: Interdisciplinary and Applied JO - The Journal of Psychology: Interdisciplinary and Applied JA - J Psychol Y1 - 2011/09// VL - 145 IS - 5 SP - 463 EP - 480 CY - United Kingdom PB - Taylor & Francis SN - 0022-3980 SN - 1940-1019 AD - Alarcon, Gene M., 2698 G St., Bldg. 190, Wright Patterson Air Force Base, OH, US, 45433 N1 - Accession Number: 2011-23123-004. PMID: 21902012 Partial author list: First Author & Affiliation: Alarcon, Gene M.; 711th Human Performance Wing, Air Force Research Laboratory, Wright Patterson Air Force Base, OH, US. Other Publishers: Heldref Publications. Release Date: 20111121. Correction Date: 20140303. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Job Involvement; Job Satisfaction. Classification: Personnel Attitudes & Job Satisfaction (3650). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Utrecht Work Engagement Scale; Michigan Organizational Assessment Questionnaire DOI: 10.1037/t01581-000; Areas of Worklife Survey DOI: 10.1037/t06444-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 18. Issue Publication Date: Sep, 2011. Publication History: Accepted Date: Apr 19, 2011; First Submitted Date: Sep 7, 2010. AB - The present study explored the factor structure of engagement and its relationship with job satisfaction. The authors hypothesize that work engagement comprises 3 constructs: vigor, dedication, and absorption. Using structural equation modeling, the authors analyze data from 3 archival data sets to determine the factor structure of engagement. In addition, they examine the hypothesis that engagement and job satisfaction are separate but related constructs, using structural equation modeling and hierarchical regression. The authors test models in which engagement and job satisfaction items loaded onto a single latent variable and 1 in which they loaded onto 2 separate variables. Results from the confirmatory factor analysis indicate engagement has 3 factors. In addition, confirmatory factor analysis and hierarchical regressions indicate engagement and job satisfaction are separate constructs. Last, hierarchical regressions demonstrated the constructs have different relationships with the areas of work–life scale. Implications for theory and research are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - work engagement KW - job satisfaction KW - 2011 KW - Job Involvement KW - Job Satisfaction KW - 2011 DO - 10.1080/00223980.2011.584083 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-23123-004&site=ehost-live&scope=site UR - gene.alarcon.ctr@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-32017-006 AN - 2012-32017-006 AU - Lindsay, Douglas R. AU - Day, David V. AU - Halpin, Stanley M. T1 - Shared leadership in the military: Reality, possibility, or pipedream? T3 - Military Leadership JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2011/09// VL - 23 IS - 5 SP - 528 EP - 549 CY - United Kingdom PB - Taylor & Francis SN - 0899-5605 SN - 1532-7876 AD - Lindsay, Douglas R., USAF Academy, HQ USAFA, 2354 Fairchild Drive, Suite 6L-101, Colorado Springs, CO, US, 80840 N1 - Accession Number: 2012-32017-006. Partial author list: First Author & Affiliation: Lindsay, Douglas R.; Department of Behavioral Sciences & Leadership, United States Air Force Academy, Colorado Springs, CO, US. Other Publishers: Educational Publishing Foundation; Lawrence Erlbaum. Release Date: 20130204. Correction Date: 20140714. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Leadership; Military Personnel; Training. Minor Descriptor: Social Interaction. Classification: Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 22. Issue Publication Date: Sep, 2011. Copyright Statement: Taylor & Francis Group, LLC AB - Shared leadership involves building a broader and deeper capacity for leadership that goes beyond a formally appointed leader. Several models of team leadership are reviewed, distinguishing between the leadership of teams from leadership in teams. Shared leadership is a variant of the latter in which everyone on the team is responsible for leadership and where leadership emerges through patterned interactions of team members. Overall, shared leadership appears to be a possibility for the military— and one that is needed because of the increasing complexity of missions—but efforts need to be undertaken to incorporate it into formal training and doctrine. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - military leadership KW - deeper capacity KW - patterned interactions KW - formal training KW - 2011 KW - Leadership KW - Military Personnel KW - Training KW - Social Interaction KW - 2011 DO - 10.1080/08995605.2011.600150 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-32017-006&site=ehost-live&scope=site UR - douglas.lindsay@usafa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-21469-016 AN - 2011-21469-016 AU - Guznov, Svyatoslav AU - Matthews, Gerald AU - Funke, Gregory AU - Dukes, Allen T1 - Use of the RoboFlag synthetic task environment to investigate workload and stress responses in UAV operation. JF - Behavior Research Methods JO - Behavior Research Methods JA - Behav Res Methods Y1 - 2011/09// VL - 43 IS - 3 SP - 771 EP - 780 CY - Germany PB - Springer SN - 1554-351X SN - 1554-3528 AD - Guznov, Svyatoslav, Department of Psychology, University of Cincinnati, 5140H Edwards Hall 1, Cincinnati, OH, US, 45221 N1 - Accession Number: 2011-21469-016. PMID: 21487900 Other Journal Title: Behavior Research Methods & Instrumentation; Behavior Research Methods, Instruments & Computers. Partial author list: First Author & Affiliation: Guznov, Svyatoslav; Department of Psychology, University of Cincinnati, Cincinnati, OH, US. Other Publishers: Psychonomic Society. Release Date: 20111114. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Motor Vehicles; Robotics; Simulation; Stress; Work Load. Minor Descriptor: Environment. Classification: Robotics (4140). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Sep, 2011. Publication History: First Posted Date: Apr 13, 2011. Copyright Statement: Psychonomic Society, Inc. 2011. AB - Use of unmanned aerial vehicles (UAVs) is an increasingly important element of military missions. However, controlling UAVs may impose high stress and workload on the operator. This study evaluated the use of the RoboFlag simulated environment as a means for profiling multiple dimensions of stress and workload response to a task requiring control of multiple vehicles (robots). It tested the effects of two workload manipulations, environmental uncertainty (i.e., UAV’s visual view area) and maneuverability, in 64 participants. The findings confirmed that the task produced substantial workload and elevated distress. Dissociations between the stress and performance effects of the manipulations confirmed the utility of a multivariate approach to assessment. Contrary to expectations, distress and some aspects of workload were highest in the low-uncertainty condition, suggesting that overload of information may be an issue for UAV interface designers. The strengths and limitations of RoboFlag as a methodology for investigating stress and workload responses are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - workload KW - stress KW - robots KW - RoboFlag simulated environment KW - unmanned aerial vehicles KW - 2011 KW - Motor Vehicles KW - Robotics KW - Simulation KW - Stress KW - Work Load KW - Environment KW - 2011 DO - 10.3758/s13428-011-0085-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-21469-016&site=ehost-live&scope=site UR - guznovs@mail.uc.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Tawk, Y. AU - Bkassiny, M. AU - El-Howayek, G. AU - Jayaweera, S.K. AU - Avery, K. AU - Christodoulou, C.G. T1 - Reconfigurable front-end antennas for cognitive radio applications. JO - IET Microwaves, Antennas & Propagation JF - IET Microwaves, Antennas & Propagation Y1 - 2011/08/15/ VL - 5 IS - 8 M3 - Article SP - 985 EP - 992 SN - 17518725 AB - This study presents new antenna schemes suitable for cognitive radio communications. The antenna structures consist of a ultra wide band (UWB) sensing antenna, and a frequency reconfigurable communicating antenna both incorporated into the same substrate. Two different techniques to achieve the required frequency agility are proposed. The first one is based on a rotational motion of the radiating patch whereas the second is based on optical switching. The importance of these techniques is that no bias lines are needed as is seen in the case of RF MEMs, PIN diodes and lumped elements. Prototype antennas were fabricated and a good agreement was observed between the simulated and the measured data. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Microwaves, Antennas & Propagation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIMULATION methods & models KW - PROTOTYPES KW - SOFTWARE radio KW - ANTENNA arrays KW - ULTRA-wideband antennas KW - RADIO frequency KW - ROTATIONAL motion KW - INTEGRATED optics KW - MICROFABRICATION N1 - Accession Number: 61872555; Tawk, Y. 1; Bkassiny, M. 1; El-Howayek, G. 1; Jayaweera, S.K. 1; Avery, K. 2; Christodoulou, C.G. 1; Affiliations: 1: University of New Mexico, Electrical and Computer Engineering Department, Albuquerque, USA; 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, USA; Issue Info: Aug2011, Vol. 5 Issue 8, p985; Thesaurus Term: SIMULATION methods & models; Thesaurus Term: PROTOTYPES; Subject Term: SOFTWARE radio; Subject Term: ANTENNA arrays; Subject Term: ULTRA-wideband antennas; Subject Term: RADIO frequency; Subject Term: ROTATIONAL motion; Subject Term: INTEGRATED optics; Subject Term: MICROFABRICATION; Number of Pages: 8p; Illustrations: 2 Diagrams, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1049/iet-map.2010.0358 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=61872555&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Kulkarni, Hemant AU - Okulicz, Jason F AU - Grandits, Greg AU - Crum-Cianflone, Nancy F AU - Landrum, Michael L AU - Hale, Braden AU - Wortmann, Glenn AU - Tramont, Edmund AU - Polis, Michael AU - Dolan, Matthew AU - Lifson, Alan R AU - Agan, Brian K AU - Ahuja, Sunil K AU - Marconi, Vincent C T1 - Early Postseroconversion CD4 Cell Counts Independently Predict CD4 Cell Count Recovery in HIV-1-Postive Subjects Receiving Antiretroviral Therapy. JO - JAIDS: Journal of Acquired Immune Deficiency Syndromes JF - JAIDS: Journal of Acquired Immune Deficiency Syndromes Y1 - 2011/08/15/ VL - 57 IS - 5 M3 - Article SP - 387 EP - 395 SN - 15254135 AB - The relationship between CD4+ T-cell counts determined soon after seroconversion with HIV-1 (baseline CD4), nadir CD4, and CD4 levels attained during highly active antiretroviral therapy (HAART) is unknown.Longitudinal, including baseline (at or soon after HIV diagnosis), intermediate (nadir), and distal (post-HAART) CD4+ T-cell counts were assessed in 1085 seroconverting subjects who achieved viral load suppression from a large well-characterized cohort. The association of baseline with post-HAART CD4+ T-cell count was determined after adjustment for other relevant covariates.A higher baseline CD4+ T-cell count predicted a greater post-HAART CD4+ T-cell count, independent of the nadir and other explanatory variables. Together, baseline and nadir strongly predicted the post-HAART CD4+ count such that a high baseline and lower nadir were associated with a maximal immune recovery after HAART. Likelihood of recovery of the baseline count after HAART was significantly higher when the nadir/baseline count ratio was consistently ≥0.6.Among viral load suppressing seroconverters, the absolute CD4+ T-cell count attained post-HAART is highly dependent on both baseline and nadir CD4+ T-cell counts. These associations further support the early diagnosis and initiation of HAART among HIV-infected persons. [ABSTRACT FROM AUTHOR] AB - Copyright of JAIDS: Journal of Acquired Immune Deficiency Syndromes is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CD4 count KW - highly active antiretroviral therapy KW - outcomes KW - predictors KW - treatment response N1 - Accession Number: 111789234; Kulkarni, Hemant 1; Okulicz, Jason F 1; Grandits, Greg 1; Crum-Cianflone, Nancy F 1; Landrum, Michael L 1; Hale, Braden 1; Wortmann, Glenn 1; Tramont, Edmund 1; Polis, Michael 1; Dolan, Matthew 1; Lifson, Alan R 1; Agan, Brian K 1; Ahuja, Sunil K 1; Marconi, Vincent C 1; Source Information: 8/15/2011, Vol. 57 Issue 5, p387; Author-Supplied Keyword: CD4 count; Author-Supplied Keyword: highly active antiretroviral therapy; Author-Supplied Keyword: outcomes; Author-Supplied Keyword: predictors; Author-Supplied Keyword: treatment response; Number of Pages: 9p; Document Type: Article; Full Text Word Count: 6470 L3 - 10.1097/QAI.0b013e3182219113 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=111789234&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Carrell, Scott E. AU - Maghakian, Teny AU - West, James E. AD - U CA, Davis AD - U CA, Davis AD - US Air Force Academy T1 - A's from Zzzz's? The Causal Effect of School Start Time on the Academic Achievement of Adolescents JO - American Economic Journal: Economic Policy JF - American Economic Journal: Economic Policy Y1 - 2011/08// VL - 3 IS - 3 SP - 62 EP - 81 SN - 19457731 N1 - Accession Number: 1242527; Keywords: Adolescent; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 201107 N2 - Recent sleep research finds that many adolescents are sleep-deprived because of both early school start times and changing sleep patterns during the teen years. This study identifies the causal effect of school start time on academic achievement by using two policy changes in the daily schedule at the US Air Force Academy along with the randomized placement of freshman students to courses and instructors. Results show that starting the school day 50 minutes later has a significant positive effect on student achievement, which is roughly equivalent to raising teacher quality by one standard deviation. KW - Higher Education; Research Institutions I23 KW - Fertility; Family Planning; Child Care; Children; Youth J13 L3 - http://www.aeaweb.org/aej-policy/ UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1242527&site=ehost-live&scope=site UR - http://dx.doi.org/10.1257/pol.3.3.62 UR - http://www.aeaweb.org/aej-policy/ DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 108247446 T1 - Involuntary movements associated with cetirizine use. AU - Romo CA AU - Joshi KG AU - Waters BM Y1 - 2011/08// N1 - Accession Number: 108247446. Language: English. Entry Date: 20111014. Revision Date: 20150712. Publication Type: Journal Article; case study; letter. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. NLM UID: 0370512. KW - Histamine H1 Antagonists -- Adverse Effects KW - Cetirizine -- Adverse Effects KW - Dyskinesia, Drug-Induced -- Diagnosis KW - Dyskinesia, Drug-Induced -- Etiology KW - Rhinitis, Allergic, Seasonal -- Drug Therapy KW - Histamine H1 Antagonists -- Therapeutic Use KW - Cetirizine -- Therapeutic Use KW - Dysarthria -- Chemically Induced KW - Dysarthria -- Diagnosis KW - Female KW - Substance Withdrawal Syndrome -- Diagnosis KW - Young Adult SP - 855 EP - 855 JO - American Journal of Psychiatry JF - American Journal of Psychiatry JA - AM J PSYCHIATRY VL - 168 IS - 8 CY - Arlington, Virginia PB - American Psychiatric Publishing, Inc. SN - 0002-953X AD - The authors report no financial relationships with commercial interests. The opinions expressed in this letter do not reflect those of the Department of Defense or the United States Air Force. U2 - PMID: 21813500. DO - 10.1176/appi.ajp.2011.11040534 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=108247446&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Coletta, Damon T1 - Scholarship on Strategic Studies and Civil-Military Relations: Is American Politics the Neglected 'Poor Relation'? JO - Forum (2194-6183) JF - Forum (2194-6183) Y1 - 2011/08// VL - 9 IS - 3 M3 - Article SP - 1 EP - 14 SN - 21946183 AB - The resurgence of American civil-military relations scholarship over the past twenty years has been led by political scientists from the subfield of International Relations and American military sociologists. Samuel Huntington's seminal work, The Soldier and the State (1957), laid the foundation for considering civil-military affairs as a major influence on sound strategic policy.By recommending autonomy for a separate sphere of military operations, it also threw down the gauntlet for structuring a cohesive society that could encompass both liberal values and the military profession. To this point the political science subfield of American Politics has remained aloof from the fray. Were American Politics to engage civil-military relations in earnest, there would likely follow an important recasting of civil-military relations scholarship, with greater emphasis on the fluidity of institutional patterns and the kind of political concessions required from all parties—executive, legislative, and military—to maintain healthy civil-military relations under the Constitutional separation of powers. [ABSTRACT FROM AUTHOR] AB - Copyright of Forum (2194-6183) is the property of De Gruyter and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CIVIL-military relations -- United States -- Study & teaching KW - POLITICAL science -- Study & teaching KW - SEPARATION of powers -- United States KW - UNITED States KW - American institutions KW - American politics KW - civil-military relations KW - strategic studies KW - HUNTINGTON, Samuel P., 1927-2008 KW - SOLDIER & the State: The Theory & Politics of Civil-Military Relations, The (Book) N1 - Accession Number: 70050365; Coletta, Damon 1; Affiliations: 1 : United States Air Force Academy; Source Info: 2011, Vol. 9 Issue 3, preceding p1; Historical Period: 1989 to 2011; Subject Term: CIVIL-military relations -- United States -- Study & teaching; Subject Term: POLITICAL science -- Study & teaching; Subject Term: SEPARATION of powers -- United States; Subject: UNITED States; Author-Supplied Keyword: American institutions; Author-Supplied Keyword: American politics; Author-Supplied Keyword: civil-military relations; Author-Supplied Keyword: strategic studies; Number of Pages: 16p; Document Type: Article L3 - 10.2202/1540-8884.1459 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ahl&AN=70050365&site=ehost-live&scope=site DP - EBSCOhost DB - ahl ER - TY - JOUR ID - 104686464 T1 - Evaluation of eye metrics as a detector of fatigue. AU - McKinley RA AU - McIntire LK AU - Schmidt R AU - Repperger DW AU - Caldwell JA AU - McKinley, R Andy AU - McIntire, Lindsey K AU - Schmidt, Regina AU - Repperger, Daniel W AU - Caldwell, John A Y1 - 2011/08// N1 - Accession Number: 104686464. Language: English. Entry Date: 20111104. Revision Date: 20170228. Publication Type: journal article; research. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. Instrumentation: Psychomotor Vigilance Task (PVT). NLM UID: 0374660. KW - Eye Movement Measurements KW - Fatigue -- Diagnosis KW - Psychomotor Performance KW - Sleep Deprivation -- Physiopathology KW - Adolescence KW - Adult KW - Analysis of Variance KW - Aviation KW - Clinical Assessment Tools KW - Fatigue -- Physiopathology KW - Female KW - Male KW - Young Adult SP - 403 EP - 414 JO - Human Factors JF - Human Factors JA - HUM FACTORS VL - 53 IS - 4 PB - Sage Publications Inc. AB - Objectives: This study evaluated oculometrics as a detector of fatigue in Air Force-relevant tasks after sleep deprivation. Using the metrics of total eye closure duration (PERCLOS) and approximate entropy (ApEn), the relation between these eye metrics and fatigue-induced performance decrements was investigated.Background: One damaging effect to the successful outcome of operational military missions is that attributed to sleep deprivation-induced fatigue. Consequently, there is interest in the development of reliable monitoring devices that can assess when an operator is overly fatigued.Method: Ten civilian participants volunteered to serve in this study. Each was trained on three performance tasks: target identification, unmanned aerial vehicle landing, and the psychomotor vigilance task (PVT). Experimental testing began after 14 hr awake and continued every 2 hr until 28 hr of sleep deprivation was reached.Results: Performance on the PVT and target identification tasks declined significantly as the level of sleep deprivation increased.These performance declines were paralleled more closely by changes in the ApEn compared to the PERCLOS measure.Conclusion: The results provide evidence that the ApEn eye metric can be used to detect fatigue in relevant military aviation tasks.Application: Military and commercial operators could benefit from an alertness monitoring device. SN - 0018-7208 AD - Air Force Research Laboratory, 2215 First Street, Building 33, Wright-Patterson AFB, OH 45433, USA AD - Air Force Research Laboratory, 2215 First Street, Building 33, Wright-Patterson AFB, OH 45433, USA. Andy.McKinley@wpafb.af.mil U2 - PMID: 21901937. DO - 10.1177/0018720811411297 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104686464&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Kim, Kristopher T. T1 - Truncation-Error Reduction in Spherical Near-Field Scanning Using Slepian Sequences: Formulation for Scalar Waves. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2011/08// Y1 - 2011/08// VL - 59 IS - 8 M3 - Article SP - 2813 EP - 2823 SN - 0018926X AB - We discuss the error that results when the far field is reconstructed from spatially truncated near-field samples and present an effective mitigation technique based on the Slepian sequence for acoustic spherical near-field scanning. We show that the truncation error is inevitable whenever the far field is reconstructed using the classical near-field-to-far-field transformation. After discussing the Slepian sequence for a truncated spherical surface and its analytic and numerical properties, we apply it to expand truncated NF samples and derive the near-field-to-far-field transformation of the resulting expansion coefficients, from which the far field can be computed. We demonstrate the efficacy of this transformation by applying it to near-field scanning for bistatic scattering from a sphere and radiation from a current distribution. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEAR-field microscopy KW - ANTENNAS (Electronics) KW - SEQUENCES (Mathematics) KW - ERROR analysis (Mathematics) KW - NOISE -- Measurement KW - SCATTERING (Physics) KW - BISTATIC radar N1 - Accession Number: 63987958; Source Information: Aug2011, Vol. 59 Issue 8, p2813; Subject Term: NEAR-field microscopy; Subject Term: ANTENNAS (Electronics); Subject Term: SEQUENCES (Mathematics); Subject Term: ERROR analysis (Mathematics); Subject Term: NOISE -- Measurement; Subject Term: SCATTERING (Physics); Subject Term: BISTATIC radar; Subject Term: ; Number of Pages: 11p; ; Document Type: Article; L3 - 10.1109/TAP.2011.2158968 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=63987958&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Armanious, Miena AU - Tyo, J. AU - Skipper, Michael AU - Abdalla, Michael AU - Prather, William AU - Gruen, Greggory T1 - Electrostatic field management and electrodynamic modeling of switched quarter-wave oscillators. JO - IEEE Transactions on Dielectrics & Electrical Insulation JF - IEEE Transactions on Dielectrics & Electrical Insulation J1 - IEEE Transactions on Dielectrics & Electrical Insulation PY - 2011/08// Y1 - 2011/08// VL - 18 IS - 4 M3 - Article SP - 1054 EP - 1065 SN - 10709878 AB - Quarter-wave switched oscillators (SWOs), sometimes referred to as MATRIX oscillators, are an important technology for the generation of high-power, moderate bandwidth (mesoband) waveforms. The use of SWOs in high power microwave sources has been discussed for the past 10 years but a detailed discussion of the design of this type of oscillators for particular waveforms has been lacking. In this work a design methodology for a realization of SWOs is developed. A key element in the design of SWOs is the self-breakdown switch, which is created by a large electric field. In order for the switch to close as expected from the design, it is essential to manage the electrostatic field distribution inside the oscillator during the charging time. This enforces geometric constraints on the shape of the conductors inside the oscillator. At the same time, the electrodynamic operation of the system is dependent on the geometry of the structure. In order to generate a geometry that satisfies both the electrostatic and electrodynamic constraints, a new approach is developed to generate this geometry using iterative solutions to the 2-D static Laplace equation, subject to a particular set of boundary conditions. These boundary conditions are manipulated to generate equipotential lines with specific dimensions that satisfy the electrodynamic constraints. Meanwhile, these equipotential lines naturally support an electrostatic field distribution that meets the requirements for the field enhancement. To study the electrodynamic aspects of SWOs, three different (but inter-related) numerical models are built. Depending on the assumptions made in each model, different information about the electrodynamic properties of the designed SWO are obtained. In addition, the agreement and consistency between the different models, validate and give confidence in the calculated results. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Dielectrics & Electrical Insulation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROSTATICS KW - ELECTRODYNAMICS KW - ELECTRIC switchgear KW - ELECTRIC oscillators KW - MATHEMATICAL models KW - ELECTRIC conductors KW - BOUNDARY value problems KW - BREAKDOWN (Electricity) N1 - Accession Number: 64315590; Source Information: Aug2011, Vol. 18 Issue 4, p1054; Subject Term: ELECTROSTATICS; Subject Term: ELECTRODYNAMICS; Subject Term: ELECTRIC switchgear; Subject Term: ELECTRIC oscillators; Subject Term: MATHEMATICAL models; Subject Term: ELECTRIC conductors; Subject Term: BOUNDARY value problems; Subject Term: BREAKDOWN (Electricity); Subject Term: ; Number of Pages: 0p; ; Document Type: Article; L3 - 10.1109/TDEI.2011.5976095 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=64315590&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Carrell, Scott E. AU - Hoekstra, Mark AU - West, James E. T1 - Is poor fitness contagious?: Evidence from randomly assigned friends JO - Journal of Public Economics JF - Journal of Public Economics Y1 - 2011/08// VL - 95 IS - 7/8 M3 - Article SP - 657 EP - 663 SN - 00472727 AB - Abstract: The increase in obesity over the past 30 years has led researchers to investigate the role of social networks as a contributing factor. However, several challenges make it difficult to demonstrate a causal link between friends’ physical fitness and own fitness using observational data. To overcome these problems, we exploit data from a unique setting in which individuals are randomly assigned to peer groups. We find statistically significant positive peer effects that are roughly half as large as the own effect of prior fitness on current fitness. Evidence suggests that the effects are caused primarily by friends who were the least fit, thus supporting the provocative notion that poor physical fitness spreads on a person-to-person basis. [Copyright &y& Elsevier] AB - Copyright of Journal of Public Economics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOCIAL networks KW - PHYSICAL fitness KW - OBESITY KW - PEER pressure KW - EXERCISE KW - SOCIAL influence KW - SOCIAL pressure KW - AGE groups KW - Obesity KW - Peer effects KW - Physical fitness KW - Social networks N1 - Accession Number: 60158028; Carrell, Scott E. 1; Email Address: secarrell@ucdavis.edu; Hoekstra, Mark 2; Email Address: markhoek@pitt.edu; West, James E. 3; Email Address: jim.west@usafa.edu; Affiliations: 1: University of California-Davis, Department of Economics, One Shields Ave., Davis, CA 95616, United States; 2: University of Pittsburgh, Department of Economics, 4714 Posvar Hall, 230 S. Bouquet St., Pittsburgh, PA 15260, United States; 3: Department of Economics and Geosciences, United States Air Force Academy, CO 80840, United States; Issue Info: Aug2011, Vol. 95 Issue 7/8, p657; Thesaurus Term: SOCIAL networks; Subject Term: PHYSICAL fitness; Subject Term: OBESITY; Subject Term: PEER pressure; Subject Term: EXERCISE; Subject Term: SOCIAL influence; Subject Term: SOCIAL pressure; Subject Term: AGE groups; Author-Supplied Keyword: Obesity; Author-Supplied Keyword: Peer effects; Author-Supplied Keyword: Physical fitness; Author-Supplied Keyword: Social networks; NAICS/Industry Codes: 713940 Fitness and Recreational Sports Centers; NAICS/Industry Codes: 624190 Other Individual and Family Services; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jpubeco.2010.12.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=60158028&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 2011-28429-006 AN - 2011-28429-006 AU - Antes, Alison L. AU - Schuelke, Matthew J. T1 - Leveraging technology to develop creative leadership capacity. JF - Advances in Developing Human Resources JO - Advances in Developing Human Resources JA - Adv Dev Hum Resour Y1 - 2011/08// VL - 13 IS - 3 SP - 318 EP - 365 CY - US PB - Sage Publications SN - 1523-4223 SN - 1552-3055 AD - Schuelke, Matthew J., Air Force Research Laboratory, 711th Human Performance Wing, Sensemaking & Organizational Effectiveness Branch, 2215 First Street, Building 33, Wright-Patterson Air Force Base, OH, US, 45433 N1 - Accession Number: 2011-28429-006. Partial author list: First Author & Affiliation: Antes, Alison L.; Northern Kentucky University, Highland Heights, KY, US. Release Date: 20120116. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Innovation; Leadership; Technology. Classification: Organizational Behavior (3660). Population: Human (10). Methodology: Literature Review. References Available: Y. Page Count: 48. Issue Publication Date: Aug, 2011. Copyright Statement: SAGE Publications. 2011. AB - Leaders must think creatively and facilitate the creative work of others, but traditional approaches to developing leaders have not fully addressed this need. A key problem with regard to developing creative and innovative leadership capacity is the lack of clearly articulated objectives for developmental programs. Moreover, novel developmental tools and techniques may be necessary to develop these capacities. We provide a synthesis of what the existing literature indicates must be developed to facilitate creative and innovative leadership. We present the requisite knowledge and skills—complete with developmental objectives, learning prompts, and reflection questions—in a practical, summarized format. Next, we explore how creative/innovative leadership capacity in organizations might be enhanced by leveraging technology via simulations, e-mentoring, multisource feedback, social media, and succession planning programs. The design and implementation of a creative/innovative leadership program requires a shared investment by key stakeholders—senior executives, employees, managers/leaders, mentors, information technology experts, and human resource development professionals. We review the key concerns for these stakeholders and outline specific considerations for human resource development professionals. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - technology KW - leadership KW - innovation KW - 2011 KW - Innovation KW - Leadership KW - Technology KW - 2011 DO - 10.1177/1523422311424710 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-28429-006&site=ehost-live&scope=site UR - matthew.schuelke.ctr@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-16031-007 AN - 2011-16031-007 AU - McKinley, R. Andy AU - McIntire, Lindsey K. AU - Schmidt, Regina AU - Repperger, Daniel W. AU - Caldwell, John A. T1 - Evaluation of eye metrics as a detector of fatigue. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2011/08// VL - 53 IS - 4 SP - 403 EP - 414 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - McKinley, R. Andy, Air Force Research Laboratory, 2215 First Street, Building 33, Wright-Patterson AFB, Dayton, OH, US, 45433 N1 - Accession Number: 2011-16031-007. PMID: 21901937 Partial author list: First Author & Affiliation: McKinley, R. Andy; Air Force Research Laboratory, Dayton, OH, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20110912. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Eye Movements; Fatigue; Sleep Deprivation. Minor Descriptor: Evaluation. Classification: Physiological Processes (2540). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Psychomotor Vigilance Task. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: Aug, 2011. Publication History: Accepted Date: Jan 27, 2011; First Submitted Date: Feb 3, 2010. AB - Objectives: This study evaluated oculometrics as a detector of fatigue in Air Force–relevant tasks after sleep deprivation. Using the metrics of total eye closure duration (PERCLOS) and approximate entropy (ApEn), the relation between these eye metrics and fatigue-induced performance decrements was investigated. Background: One damaging effect to the successful outcome of operational military missions is that attributed to sleep deprivation-induced fatigue. Consequently, there is interest in the development of reliable monitoring devices that can assess when an operator is overly fatigued. Method: Ten civilian participants volunteered to serve in this study. Each was trained on three performance tasks: target identification, unmanned aerial vehicle landing, and the psychomotor vigilance task (PVT). Experimental testing began after 14 hr awake and continued every 2 hr until 28 hr of sleep deprivation was reached. Results: Performance on the PVT and target identification tasks declined significantly as the level of sleep deprivation increased. These performance declines were paralleled more closely by changes in the ApEn compared to the PERCLOS measure. Conclusion: The results provide evidence that the ApEn eye metric can be used to detect fatigue in relevant military aviation tasks. Application: Military and commercial operators could benefit from an alertness monitoring device. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - eye metrics evaluation KW - fatigue KW - sleep deprivation KW - 2011 KW - Eye Movements KW - Fatigue KW - Sleep Deprivation KW - Evaluation KW - 2011 DO - 10.1177/0018720811411297 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-16031-007&site=ehost-live&scope=site UR - Andy.McKinley@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Mattie, David R. AU - Sterner, Teresa R. T1 - Past, present and emerging toxicity issues for jet fuel JO - Toxicology & Applied Pharmacology JF - Toxicology & Applied Pharmacology Y1 - 2011/07/15/ VL - 254 IS - 2 M3 - Article SP - 127 EP - 132 SN - 0041008X AB - Abstract: The US Air Force wrote the specification for the first official hydrocarbon-based jet fuel, JP-4, in 1951. This paper will briefly review the toxicity of the current fuel, JP-8, as compared to JP-4. JP-8 has been found to have low acute toxicity with the adverse effects being slight dermal irritation and weak dermal sensitization in animals. JP-4 also has low acute toxicity with slight dermal irritation as the adverse effect. Respiratory tract sensory irritation was greater in JP-8 than in JP-4. Recent data suggest exposure to jet fuel may contribute to hearing loss. Subchronic studies for 90 days with JP-8 and JP-4 showed little toxicity with the primary effect being male rat specific hydrocarbon nephropathy. A 1-year study was conducted for JP-4. The only tumors seen were associated with the male rat specific hydrocarbon nephropathy. A number of immunosuppressive effects have been seen after exposure to JP-8. Limited neurobehavioral effects have been associated with JP-8. JP-8 is not a developmental toxicant and has little reproductive toxicity. JP-4 has not been tested for immune, neurobehavioral or reproductive endpoints. JP-8 and JP-4 were negative in mutagenicity tests but JP-4 showed an increase in unscheduled DNA synthesis. Currently, JP-8 is being used as the standard for comparison of future fuels, including alternative fuels. Emerging issues of concern with jet fuels include naphthalene content, immunotoxicity and inhalation exposure characterization and modeling of complex mixtures such as jet fuels. [Copyright &y& Elsevier] AB - Copyright of Toxicology & Applied Pharmacology is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUEL KW - Hydrocarbons KW - Immunotoxicology KW - Jet planes KW - Kidney diseases KW - Rats as laboratory animals KW - Mixtures KW - DNA synthesis KW - Reproductive toxicology KW - Immunosuppressive agents KW - Jet fuel KW - JP-4 KW - JP-8 KW - Toxicity N1 - Accession Number: 62559265; Mattie, David R. 1; Email Address: david.mattie@wpafb.af.mil; Sterner, Teresa R. 2; Affiliations: 1: Applied Biotechnology Branch, Air Force Research Laboratory, AFRL/RHPB Bldg. 837, 2729 R Street, Wright-Patterson Air Force Base, OH 45433-5707, USA; 2: HJF, AFRL/RHPB Bldg 837, 2729 R Street, Wright-Patterson Air Force Base, OH 45433-5707, USA; Issue Info: Jul2011, Vol. 254 Issue 2, p127; Thesaurus Term: FUEL; Thesaurus Term: Hydrocarbons; Subject Term: Immunotoxicology; Subject Term: Jet planes; Subject Term: Kidney diseases; Subject Term: Rats as laboratory animals; Subject Term: Mixtures; Subject Term: DNA synthesis; Subject Term: Reproductive toxicology; Subject Term: Immunosuppressive agents; Author-Supplied Keyword: Jet fuel; Author-Supplied Keyword: JP-4; Author-Supplied Keyword: JP-8; Author-Supplied Keyword: Toxicity; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.taap.2010.04.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=62559265&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Murnyak, George AU - Vandenberg, John AU - Yaroschak, Paul J. AU - Williams, Larry AU - Prabhakaran, Krishnan AU - Hinz, John T1 - Emerging contaminants: Presentations at the 2009 Toxicology and Risk Assessment Conference JO - Toxicology & Applied Pharmacology JF - Toxicology & Applied Pharmacology Y1 - 2011/07/15/ VL - 254 IS - 2 M3 - Article SP - 167 EP - 169 SN - 0041008X AB - Abstract: A session entitled “Emerging Contaminants” was held in April 2009 in Cincinnati, OH at the 2009 Toxicology and Risk Assessment Conference. The purpose of the session was to share information on both programmatic and technical aspects associated with emerging contaminants. Emerging contaminants are chemicals or materials that are characterized by a perceived or real threat to human health or environment, a lack of published health standards or an evolving standard. A contaminant may also be “emerging” because of the discovery of a new source, a new pathway to humans, or a new detection method or technology. The session included five speakers representing the Department of Defense (DoD), the Environmental Protection Agency (EPA), and each of the military services. The DoD created the Emerging Contaminant Directorate to proactively address environmental, health, and safety concerns associated with emerging contaminants. This session described the scan–watch–action list process, impact assessment methodology, and integrated risk management concept that DoD has implemented to manage emerging contaminants. EPA presented emerging trends in health risk assessment. Researchers made technical presentations on the status of some emerging contaminates in the assessment process (i.e. manganese, RDX, and naphthalene). [Copyright &y& Elsevier] AB - Copyright of Toxicology & Applied Pharmacology is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Emerging contaminants in water KW - Health risk assessment KW - Naphthalene KW - Environmental health KW - Environmental protection KW - Conferences & conventions KW - Developmental toxicology KW - Cincinnati (Ohio) KW - Ohio KW - Emerging contaminants KW - Environment, safety and health N1 - Accession Number: 62559254; Murnyak, George 1; Email Address: George.murnyak@us.army.mil; Vandenberg, John 2; Email Address: Vandenberg.John@epamail.epa.gov; Yaroschak, Paul J. 3; Email Address: Paul.Yaroschak@osd.mil; Williams, Larry 1; Email Address: Larry.williams45@us.army.mil; Prabhakaran, Krishnan 4; Email Address: Krishnan.Prabhakaran.ctr@wpafb.af.mil; Hinz, John 5; Email Address: John.Hinz@brooks.af.mil; Affiliations: 1: U.S. Army, Center for Health Promotion and Preventive Medicine, MD, USA; 2: U.S. EPA, Office of Research and Development, National Center for Environmental Assessment-Research Triangle Park, NC, USA; 3: Chemical Material and Risk Management, Office of the Deputy Under Secretary of Defense, VA, USA; 4: Navy Health Research Center Detachment, Environmental Health Effects Laboratory, OH, USA; 5: Air Force Research Laboratory, TX, USA; Issue Info: Jul2011, Vol. 254 Issue 2, p167; Thesaurus Term: Emerging contaminants in water; Thesaurus Term: Health risk assessment; Thesaurus Term: Naphthalene; Thesaurus Term: Environmental health; Thesaurus Term: Environmental protection; Subject Term: Conferences & conventions; Subject Term: Developmental toxicology; Subject: Cincinnati (Ohio); Subject: Ohio; Author-Supplied Keyword: Emerging contaminants; Author-Supplied Keyword: Environment, safety and health; NAICS/Industry Codes: 561920 Convention and Trade Show Organizers; NAICS/Industry Codes: 923120 Administration of Public Health Programs; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.taap.2010.10.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=62559254&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 108233377 T1 - Abdominal twists and turns: part I, gastrointestinal tract torsions with pathologic correlation. AU - Timpone VM AU - Lattin GE Jr AU - Lewis RB AU - Azuar K AU - Tubay M AU - Jesinger RA Y1 - 2011/07//2011 Jul N1 - Accession Number: 108233377. Language: English. Entry Date: 20110930. Revision Date: 20150712. Publication Type: Journal Article; research. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Diagnostic Imaging. NLM UID: 7708173. KW - Diagnostic Imaging -- Methods KW - Gastrointestinal Diseases -- Diagnosis KW - Radiography, Abdominal -- Methods KW - Torsion Abnormality -- Diagnosis KW - Statistics SP - 86 EP - 96 JO - American Journal of Roentgenology JF - American Journal of Roentgenology JA - AJR AM J ROENTGENOL VL - 197 IS - 1 CY - Leesburg, Virginia PB - American Roentgen Ray Society SN - 0361-803X AD - Department of Radiology, David Grant United States Air Force Medical Center, 101 Bodin Cir, Travis AFB, CA 94535. U2 - PMID: 21701015. DO - 10.2214/AJR.10.7292 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=108233377&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 108249385 T1 - Abdominal twists and turns: part 2, solid visceral torsions with pathologic correlation. AU - Timpone VM AU - Lattin GE Jr AU - Lewis RB AU - Azuar K AU - Tubay M AU - Jesinger RA Y1 - 2011/07//2011 Jul N1 - Accession Number: 108249385. Language: English. Entry Date: 20110930. Revision Date: 20150712. Publication Type: Journal Article; research. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Diagnostic Imaging. NLM UID: 7708173. KW - Diagnostic Imaging -- Methods KW - Multiple Organ Dysfunction Syndrome -- Diagnosis KW - Torsion Abnormality -- Diagnosis KW - Body Regions -- Pathology KW - Body Regions -- Radiography KW - Statistics SP - 97 EP - 102 JO - American Journal of Roentgenology JF - American Journal of Roentgenology JA - AJR AM J ROENTGENOL VL - 197 IS - 1 CY - Leesburg, Virginia PB - American Roentgen Ray Society SN - 0361-803X AD - Department of Radiology, David Grant United States Air Force Medical Center, Travis AFB, CA 94535, USA. vincent.timpone@travis.af.mil U2 - PMID: 21701016. DO - 10.2214/AJR.11.6928 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=108249385&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Martin, John A. AU - Heppard, Kurt A. AU - Green, Steve G. T1 - Taking international business education programs and pedagogy to new heights: Fundamental questions for educators and students JO - Business Horizons JF - Business Horizons Y1 - 2011/07//Jul/Aug2011 VL - 54 IS - 4 M3 - Article SP - 355 EP - 363 SN - 00076813 AB - Abstract: As the dynamic global business environment continues to force organizations to be agile and adaptive, international business (IB) education pedagogy is transforming. Building on previous literature describing gaps in IB pedagogy, as well as unaddressed stakeholder needs, we first use our institution—the United States Air Force Academy—as an example of IB program development. In examining our program''s evolution, we develop five questions that may provide insight regarding more generalizable IB pedagogy trends. To assess this possible generalizability, we explore questions related to the development of our program using self-reported, publically-available websites of the top full-time MBA programs throughout the United States. Our questions focus on the role of foreign languages, study abroad opportunities, integrative courses, capstone/thesis projects, and faculty development. Our exploration indicates that these five questions are important not only for educators developing future programs, but also for students examining potential IB programs. Additionally, our research examines a sixth question focused on the development of competitive positioning and program differentiation in IB programs. We hope to motivate future inquiry into IB pedagogy, which could inform more effective means of improving IB education. [Copyright &y& Elsevier] AB - Copyright of Business Horizons is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - International business KW - International business education KW - Pedagogy N1 - Accession Number: 66694714; Martin, John A.; Email Address: john.martin@usafa.edu; Heppard, Kurt A. 1; Email Address: kurt.heppard@usafa.edu; Green, Steve G. 1; Email Address: steve.green@usafa.edu; Affiliations: 1: United States Air Force Academy, 2354 Fairchild Drive, Ste 6H-130, USAF Academy, CO 80840-5099, U.S.A.; Issue Info: Jul/Aug2011, Vol. 54 Issue 4, p355; Author-Supplied Keyword: International business; Author-Supplied Keyword: International business education; Author-Supplied Keyword: Pedagogy; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.bushor.2011.03.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=66694714&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Jung, Byung Wook AU - Adve, Raviraj S. AU - Chun, Joohwan AU - Wicks, Michael C. T1 - Detection Performance using Frequency Diversity with Distributed Sensors. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2011/07// VL - 47 IS - 3 M3 - Article SP - 1800 EP - 1813 SN - 00189251 AB - Detection using a frequency diverse (FD), distributed, radar system is investigated. Distributed sensing systems provide an inherent spatial diversity by viewing a potential target from different aspect angles. By using different frequencies at each platform, a diversity gain is obtained in addition to the advantages of spatial diversity while also avoiding mutual interference. Here, since platforms are distributed spatially, true time delay is used at each platform to align the sample look point in time. Data models for a distributed system with and without frequency diversity are developed. These models are used to analyze the corresponding signal-to-interference-plus-noise ratio (SINR) and probability of detection for the two cases in the context of space-time adaptive processing (STAP). The simulation results presented here illustrate the limitations imposed by mutual interference and the significant benefits of spatial and frequency diversity. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERFORMANCE evaluation KW - RADAR KW - DETECTORS KW - DATA modeling KW - ELECTROMAGNETIC interference KW - TIME delay systems KW - SIGNAL-to-noise ratio KW - Clutter KW - Data models KW - Delay effects KW - Electromagnetic interference KW - Frequency diversity KW - Radar N1 - Accession Number: 62559811; Jung, Byung Wook 1; Adve, Raviraj S. 2; Chun, Joohwan 1; Wicks, Michael C. 3; Affiliations: 1: KAIST; 2: University of Toronto; 3: Air Force Research Laboratory; Issue Info: Jul2011, Vol. 47 Issue 3, p1800; Thesaurus Term: PERFORMANCE evaluation; Subject Term: RADAR; Subject Term: DETECTORS; Subject Term: DATA modeling; Subject Term: ELECTROMAGNETIC interference; Subject Term: TIME delay systems; Subject Term: SIGNAL-to-noise ratio; Author-Supplied Keyword: Clutter; Author-Supplied Keyword: Data models; Author-Supplied Keyword: Delay effects; Author-Supplied Keyword: Electromagnetic interference; Author-Supplied Keyword: Frequency diversity; Author-Supplied Keyword: Radar; Number of Pages: 0p; Document Type: Article L3 - 10.1109/TAES.2011.5937266 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=62559811&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Wang, Pu AU - Li, Hongbin AU - Himed, Braham T1 - Parametric Rao Tests for Multichannel Adaptive Detection in Partially Homogeneous Environment. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2011/07// VL - 47 IS - 3 M3 - Article SP - 1850 EP - 1862 SN - 00189251 AB - This paper considers the problem of detecting a multichannel signal in partially homogeneous environments, where the disturbances in both test signal and training signals share the same covariance matrix up to an unknown power scaling factor. Two different parametric Rao tests, referred to as the normalized parametric Rao (NPRao) test and the scale-invariant parametric Rao (SI-PRao) test, respectively, are developed by modeling the disturbance as a multichannel autoregressive (AR) process. The NPRao and SI-PRao tests entail reduced training requirements and computational efficiency, compared with conventional fully adaptive, covariance matrix based solutions. The SI-PRao test attains asymptotically a constant false alarm rate (CFAR) that is independent of the covariance matrix and power scaling factor of the disturbance. Comparisons with the covariance matrix based, scale-invariant generalized likelihood ratio test (GLRT), also known as the adaptive coherence estimator (ACE), are included. Numerical results show that the parametric Rao detectors, in particular the SI-PRao test, attain considerably better detection performance and use significantly less training than the ACE detector. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ESTIMATION theory KW - ANALYSIS of covariance KW - STATISTICAL hypothesis testing KW - DETECTORS KW - AUTOREGRESSION (Statistics) KW - SIGNAL-to-noise ratio KW - MAXIMUM likelihood statistics KW - Adaptation model KW - Covariance matrix KW - Detectors KW - Matched filters KW - Maximum likelihood estimation KW - Signal to noise ratio KW - Training N1 - Accession Number: 62559814; Wang, Pu 1; Li, Hongbin 1; Himed, Braham 2; Affiliations: 1: Stevens Institute of Technology; 2: Air Force Research Laboratory; Issue Info: Jul2011, Vol. 47 Issue 3, p1850; Thesaurus Term: ESTIMATION theory; Thesaurus Term: ANALYSIS of covariance; Thesaurus Term: STATISTICAL hypothesis testing; Subject Term: DETECTORS; Subject Term: AUTOREGRESSION (Statistics); Subject Term: SIGNAL-to-noise ratio; Subject Term: MAXIMUM likelihood statistics; Author-Supplied Keyword: Adaptation model; Author-Supplied Keyword: Covariance matrix; Author-Supplied Keyword: Detectors; Author-Supplied Keyword: Matched filters; Author-Supplied Keyword: Maximum likelihood estimation; Author-Supplied Keyword: Signal to noise ratio; Author-Supplied Keyword: Training; Number of Pages: 0p; Document Type: Article L3 - 10.1109/TAES.2011.5937269 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=62559814&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Li, Yang AU - Shore, Robert A. T1 - Corrections to “Traveling Waves on Three-Dimensional Periodic Arrays of Two Different Alternating Magnetodielectric Spheres”. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2011/07// Y1 - 2011/07// VL - 59 IS - 7 M3 - Correction notice SP - 2753 EP - 2754 SN - 0018926X AB - Corrections to the article "Traveling Waves on Three-Dimensional Periodic Arrays of Two Different Alternating Magnetodielectric Spheres," by Yang Li and Robert A. Shore that appeared in the July 2011 issue is presented. KW - ANTENNAS (Electronics) KW - DIELECTRICS KW - ELECTROMAGNETISM KW - EQUATIONS KW - MATHEMATICAL models KW - LABORATORIES KW - COMPUTERS N1 - Accession Number: 62559927; Source Information: Jul2011, Vol. 59 Issue 7, p2753; Subject Term: ANTENNAS (Electronics); Subject Term: DIELECTRICS; Subject Term: ELECTROMAGNETISM; Subject Term: EQUATIONS; Subject Term: MATHEMATICAL models; Subject Term: LABORATORIES; Subject Term: COMPUTERS; Subject Term: ; Number of Pages: 2p; ; Document Type: Correction notice; L3 - 10.1109/TAP.2011.2152355 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=62559927&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Su, Weifeng AU - Lee, Sangkook AU - Pados, Dimitris A. AU - Matyjas, John D. T1 - Optimal Power Assignment for Minimizing the Average Total Transmission Power in Hybrid-ARQ Rayleigh Fading Links. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2011/07// VL - 59 IS - 7 M3 - Article SP - 1867 EP - 1877 SN - 00906778 AB - We address the fundamental problem of identifying the optimal power assignment sequence for hybrid automatic-repeat-request (H-ARQ) communications over quasi-static Rayleigh fading channels. For any targeted H-ARQ link outage probability, we find the sequence of power values that minimizes the average total expended transmission power. We first derive a set of equations that describe the optimal transmission power assignment and enable its exact recursive calculation. To reduce calculation complexity, we also develop an approximation to the optimal power sequence that is close to the numerically calculated exact result. The newly founded power allocation solution reveals that conventional equal-power H-ARQ assignment is far from optimal. For example, for targeted outage probability of 10^-3 with a maximum of two transmissions, the average total transmission power with the optimal assignment is 9 dB lower than the equal-power protocol. The difference in average total power cost grows further when the number of allowable retransmissions increases (for example, 11 dB gain with a cap of 5 transmissions) or the targeted outage probability decreases (27 dB gain with outage probability 10^-5 and transmissions capped at 5). Interestingly, the optimal transmission power assignment sequence is neither increasing nor decreasing; its form depends on given total power budget and targeted outage performance levels. Extensive numerical and simulation results are presented to illustrate the theoretical development. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Data transmission systems KW - Computer network protocols KW - Signal-to-noise ratio KW - Electric power transmission KW - Radio transmitters & transmission -- Fading KW - Numerical analysis KW - Probability theory KW - Mathematical models KW - Rayleigh model KW - Automatic repeat request KW - Hybrid automatic-repeat-request (H-ARQ) protocol KW - Mathematical model KW - optimum power allocation KW - outage probability KW - Protocols KW - Rayleigh channels KW - Rayleigh fading KW - Receivers KW - Signal to noise ratio N1 - Accession Number: 62967734; Su, Weifeng 1; Lee, Sangkook 1; Pados, Dimitris A. 1; Matyjas, John D. 2; Affiliations: 1: Department of Electrical Engineering, State University of New York (SUNY) at Buffalo, Buffalo, NY 14260, USA; 2: Air Force Research Laboratory/RIGF, Rome, NY 13441, USA; Issue Info: Jul2011, Vol. 59 Issue 7, p1867; Thesaurus Term: Data transmission systems; Thesaurus Term: Computer network protocols; Thesaurus Term: Signal-to-noise ratio; Subject Term: Electric power transmission; Subject Term: Radio transmitters & transmission -- Fading; Subject Term: Numerical analysis; Subject Term: Probability theory; Subject Term: Mathematical models; Subject Term: Rayleigh model; Author-Supplied Keyword: Automatic repeat request; Author-Supplied Keyword: Hybrid automatic-repeat-request (H-ARQ) protocol; Author-Supplied Keyword: Mathematical model; Author-Supplied Keyword: optimum power allocation; Author-Supplied Keyword: outage probability; Author-Supplied Keyword: Protocols; Author-Supplied Keyword: Rayleigh channels; Author-Supplied Keyword: Rayleigh fading; Author-Supplied Keyword: Receivers; Author-Supplied Keyword: Signal to noise ratio; NAICS/Industry Codes: 221121 Electric Bulk Power Transmission and Control; Number of Pages: 0p; Document Type: Article L3 - 10.1109/TCOMM.2011.050911.090796 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=62967734&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Meola, Joseph AU - Eismann, Michael T. AU - Moses, Randolph L. AU - Ash, Joshua N. T1 - Detecting Changes in Hyperspectral Imagery Using a Model-Based Approach. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2011/07// VL - 49 IS - 7 M3 - Article SP - 2647 EP - 2661 SN - 01962892 AB - Within the hyperspectral community, change detection is a continued area of interest. Interesting changes in imagery typically correspond to changes in material reflectance associated with pixels in the scene. Using a physical model describing the sensor-reaching radiance, change detection can be formulated as a statistical hypothesis test. Complicating the problem of change detection is the presence of shadow, illumination, and atmospheric differences, as well as misregistration and parallax error, which often produce the appearance of change. The proposed physical model incorporates terms to account for both direct and diffuse shadow fractions to help mitigate false alarms associated with shadow differences between scenes. The resulting generalized likelihood ratio test (GLRT) provides an indicator of change at each pixel. The maximum likelihood estimates of the physical model parameters used for the GLRT are obtained from the entire joint data set to take advantage of coupled information existing between pixel measurements. Simulation results using synthetic and real imagery demonstrate the efficacy of the proposed approach. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIMULATION methods & models KW - MATHEMATICAL optimization KW - IMAGING systems KW - REFLECTANCE KW - PIXELS KW - DATA modeling KW - IMAGE analysis KW - IMAGE processing KW - Change detection KW - Data models KW - hyperspectral KW - Hyperspectral sensors KW - hypothesis testing KW - image analysis KW - Lighting KW - Materials KW - Noise KW - optimization KW - physical model KW - Pixel KW - Sensors N1 - Accession Number: 62026801; Meola, Joseph 1; Eismann, Michael T. 2; Moses, Randolph L. 3; Ash, Joshua N. 4; Affiliations: 1: RYMT, Air Force Research Laboratory (AFRL), Wright-Patterson Air Force Base, OH, USA; 2: Air Force Research Laboratory, Wright Patterson Air Force Base, OH, USA; 3: Electrical Engineering Department, The Ohio State University, Columbus , OH, USA; 4: Electrical Engineering Department, The Ohio State University, Columbus, OH, USA; Issue Info: Jul2011, Vol. 49 Issue 7, p2647; Thesaurus Term: SIMULATION methods & models; Thesaurus Term: MATHEMATICAL optimization; Subject Term: IMAGING systems; Subject Term: REFLECTANCE; Subject Term: PIXELS; Subject Term: DATA modeling; Subject Term: IMAGE analysis; Subject Term: IMAGE processing; Author-Supplied Keyword: Change detection; Author-Supplied Keyword: Data models; Author-Supplied Keyword: hyperspectral; Author-Supplied Keyword: Hyperspectral sensors; Author-Supplied Keyword: hypothesis testing; Author-Supplied Keyword: image analysis; Author-Supplied Keyword: Lighting; Author-Supplied Keyword: Materials; Author-Supplied Keyword: Noise; Author-Supplied Keyword: optimization; Author-Supplied Keyword: physical model; Author-Supplied Keyword: Pixel; Author-Supplied Keyword: Sensors; NAICS/Industry Codes: 812922 One-Hour Photofinishing; NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; Number of Pages: 15p; Document Type: Article L3 - 10.1109/TGRS.2011.2109726 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=62026801&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Li, Yan-Ran AU - Shen, Lixin AU - Dai, Dao-Qing AU - Suter, Bruce W. T1 - Framelet Algorithms for De-Blurring Images Corrupted by Impulse Plus Gaussian Noise. JO - IEEE Transactions on Image Processing JF - IEEE Transactions on Image Processing Y1 - 2011/07// VL - 20 IS - 7 M3 - Article SP - 1822 EP - 1837 SN - 10577149 AB - This paper studies a problem of image restoration that observed images are contaminated by Gaussian and impulse noise. Existing methods for this problem in the literature are based on minimizing an objective functional having the \ell^1 fidelity term and the Mumford–Shah regularizer. We present an algorithm on this problem by minimizing a new objective functional. The proposed functional has a content-dependent fidelity term which assimilates the strength of fidelity terms measured by the \ell^1 and \ell^2 norms. The regularizer in the functional is formed by the \ell^1 norm of tight framelet coefficients of the underlying image. The selected tight framelet filters are able to extract geometric features of images. We then propose an iterative framelet-based approximation/sparsity deblurring algorithm (IFASDA) for the proposed functional. Parameters in IFASDA are adaptively varying at each iteration and are determined automatically. In this sense, IFASDA is a parameter-free algorithm. This advantage makes the algorithm more attractive and practical. The effectiveness of IFASDA is experimentally illustrated on problems of image deblurring with Gaussian and impulse noise. Improvements in both PSNR and visual quality of IFASDA over a typical existing method are demonstrated. In addition, Fast_IFASDA, an accelerated algorithm of IFASDA, is also developed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Image Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - MATHEMATICAL optimization KW - APPROXIMATION theory KW - MATHEMATICAL models KW - IMAGE reconstruction KW - IMAGE processing KW - RANDOM noise theory KW - PIXELS KW - Adaptive iterated algorithm KW - Approximation methods KW - Hafnium KW - Image restoration KW - Mathematical model KW - Noise KW - Noise measurement KW - parameter-free KW - Pixel KW - tight framelet N1 - Accession Number: 61751473; Li, Yan-Ran 1; Shen, Lixin 2; Dai, Dao-Qing 3; Suter, Bruce W. 4; Affiliations: 1: Shenzhen City Key Laboratory of Embedded System Design, College of Computer Science and Software Engineering, Shenzhen University, Shenzhen, China; 2: Department of Mathematics, Syracuse University, Syracuse, NY, USA; 3: Center for Computer Vision and Department of Mathematics, Faculty of Mathematics and Computing, Sun Yat-Sen University, Guangzhou, China; 4: Air Force Research Laboratory, Rome,; Issue Info: Jul2011, Vol. 20 Issue 7, p1822; Thesaurus Term: ALGORITHMS; Thesaurus Term: MATHEMATICAL optimization; Thesaurus Term: APPROXIMATION theory; Thesaurus Term: MATHEMATICAL models; Subject Term: IMAGE reconstruction; Subject Term: IMAGE processing; Subject Term: RANDOM noise theory; Subject Term: PIXELS; Author-Supplied Keyword: Adaptive iterated algorithm; Author-Supplied Keyword: Approximation methods; Author-Supplied Keyword: Hafnium; Author-Supplied Keyword: Image restoration; Author-Supplied Keyword: Mathematical model; Author-Supplied Keyword: Noise; Author-Supplied Keyword: Noise measurement; Author-Supplied Keyword: parameter-free; Author-Supplied Keyword: Pixel; Author-Supplied Keyword: tight framelet; NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 812922 One-Hour Photofinishing; Number of Pages: 16p; Document Type: Article L3 - 10.1109/TIP.2010.2103950 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=61751473&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Sego, D.J. AU - Griffiths, H. AU - Wicks, M.C. T1 - Waveform and aperture design for low-frequency RF tomography. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2011/07// VL - 5 IS - 6 M3 - Article SP - 686 EP - 696 SN - 17518784 AB - Multiple applications would benefit from low frequency, three-dimensional (3-D), high resolution, imagery, among them remote archeological survey through foliage, and detecting voids in collapsed structures and underground. High vertical resolution circular SAR requires ultrawideband waveforms, a problematic aspect in the modern RF spectral environment, particularly at lower frequencies. RF tomography offers the potential to yield high, 3-D resolution using spectrally sparse, narrowband waveforms simultaneously with operation at frequencies that have demonstrated favourable penetration through intervening dielectric media. In this paper, we explore this potential; evaluating minimal spatial support tomographic apertures, combining diverse narrowband signals with 2- and 3-dimensional monostatic and bistatic apertures. Results are presented in terms of image quality metrics: resolution and sidelobe levels. It is shown that, generally, frequency selection is a soft constraint in terms of the achievable resolution and sidelobe levels, that the tomographic aperture with spatial sampling that is linearly continuous and substantially less than hemispherical yields high spatial resolution, and that there is interaction between the tomographic aperture and the waveform set as evidenced in the point spread function. Additionally the bistatic contribution of the collection aperture Fourier surface is demonstrated to enhance image quality when combined in a hybrid monostatic-bistatic aperture. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TOMOGRAPHY KW - RADIO frequency KW - FREQUENCIES of oscillating systems KW - IMAGE quality analysis KW - THREE-dimensional imaging KW - HIGH resolution imaging KW - ENERGY bands N1 - Accession Number: 61979053; Sego, D.J. 1; Griffiths, H. 2; Wicks, M.C. 3; Affiliations: 1: University College London, Department of Electrical and Electronic Engineering, Seattle, USA; 2: University College London, Department of Electrical and Electronic Engineering, London, UK; 3: Sensors Directorate, Air Force Research Laboratory, Rome, USA; Issue Info: Jul2011, Vol. 5 Issue 6, p686; Subject Term: TOMOGRAPHY; Subject Term: RADIO frequency; Subject Term: FREQUENCIES of oscillating systems; Subject Term: IMAGE quality analysis; Subject Term: THREE-dimensional imaging; Subject Term: HIGH resolution imaging; Subject Term: ENERGY bands; Number of Pages: 11p; Illustrations: 2 Diagrams, 4 Charts, 6 Graphs; Document Type: Article L3 - 10.1049/iet-rsn.2011.0014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=61979053&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Geis II, John P. AU - Parnell, Gregory S. AU - Newton, Harry AU - Bresnick, Terry T1 - Blue Horizons Study Assesses Future Capabilities and Technologies for the United States Air Force. JO - Interfaces JF - Interfaces Y1 - 2011/07//Jul/Aug2011 VL - 41 IS - 4 M3 - Article SP - 338 EP - 353 PB - INFORMS: Institute for Operations Research SN - 00922102 AB - The purpose of the Blue Horizons study was to determine the capabilities and technologies in which the United States Air Force would need to invest to maintain dominant air, space, and cyberspace capabilities in the year 2030. The study used two methodologies, scenario analysis and multiobjective decision analysis, to evaluate 58 future-system concepts and 172 key enabling technologies. The paper outlines the study's key conclusions and recommendations to the Air Force, including recommendations on how future concepts and technologies would help it to prepare for disparate potential challenges, such as rising peer competitors, the problem of failed states, and continued insurgencies in far-flung parts of the world. [ABSTRACT FROM AUTHOR] AB - Copyright of Interfaces is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH & development KW - DECISION making KW - TECHNOLOGY KW - CYBERSPACE KW - UNITED States KW - decision analysis KW - defense KW - multiple criteria KW - research and development KW - scenarios KW - technology KW - uncertainty KW - UNITED States. Air Force N1 - Accession Number: 67309986; Geis II, John P. 1; Email Address: john.geis@maxwell.af.mil; Parnell, Gregory S. 2,3; Email Address: gparnell@innovativedecisions.com; Newton, Harry 3; Email Address: harry.newton@innovativedecisions.com; Bresnick, Terry 3; Email Address: tabresnick@innovativedecisions.com; Affiliations: 1: United States Air Force Center for Strategy and Technology, Air University, Maxwell Air Force Base, Alabama 36112; 2: Department of Systems Engineering, United States Military Academy, West Point, New York 10996; 3: Innovative Decisions, Inc., Vienna, Virginia 22182; Issue Info: Jul/Aug2011, Vol. 41 Issue 4, p338; Thesaurus Term: RESEARCH & development; Thesaurus Term: DECISION making; Thesaurus Term: TECHNOLOGY; Subject Term: CYBERSPACE; Subject: UNITED States; Author-Supplied Keyword: decision analysis; Author-Supplied Keyword: defense; Author-Supplied Keyword: multiple criteria; Author-Supplied Keyword: research and development; Author-Supplied Keyword: scenarios; Author-Supplied Keyword: technology; Author-Supplied Keyword: uncertainty ; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 16p; Illustrations: 1 Diagram, 6 Charts, 4 Graphs; Document Type: Article L3 - 10.1287/inte.1110.0556 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=67309986&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Boston, Jonathan AU - Swenson, Eric AU - Kunz, Donald AU - Wenbin Yu AU - Blair, Maxwell T1 - Experiments with Geometric Nonlinear Coupling for Analytical Validation. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2011/07//Jul/Aug2011 Y1 - 2011/07//Jul/Aug2011 VL - 48 IS - 4 M3 - Article SP - 1136 EP - 1146 SN - 00218669 AB - This study was focused on obtaining accurate experimental data for the validation of the geometrically exact beam theory from a series of experiments in which high-quality surface shape and deflection data were collected. Many previous experiments have experienced issues with data collection or test articles, which the researchers were unable to overcome. This test program was performed in two stages: qualification and joined wing. The qualification stage validated the experimental procedures on a simple 72-in.-Iong aluminum beam with 8 in. x 0.5 in. cross section. The joined-wing stage was the primary experiment focused on obtaining quality data for use in validation, and each joined-wing test article had an overall length of 57 in. The fore wing segment was designed with a chord of 8 in. and a thickness of 0.5 in.; the aft wing segment was designed with a chord of 6 in. and a thickness of 0.5 in. These dimensions were chosen so the joined-wing test article produced nonlinear bend-twist coupling before permanent deformation. Bend-twist coupling in a solid cross-section aluminum joined-wing test article was successfully captured with surface shape, deflection points, and strain data. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GEOMETRIC analysis KW - CATHODE ray tubes -- Deflection systems KW - COUPLINGS (Gearing) KW - BEAM dynamics KW - ALUMINUM N1 - Accession Number: 65789590; Source Information: Jul/Aug2011, Vol. 48 Issue 4, p1136; Subject Term: GEOMETRIC analysis; Subject Term: CATHODE ray tubes -- Deflection systems; Subject Term: COUPLINGS (Gearing); Subject Term: BEAM dynamics; Subject Term: ALUMINUM; Subject Term: ; Number of Pages: 11p; ; Document Type: Article; L3 - 10.2514/1 .C031033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=65789590&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Stanford, Bret AU - Beran, Philip T1 - Optimal Structural Topology of a Platelike Wing for Subsonic Aeroelastic Stability. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2011/07//Jul/Aug2011 Y1 - 2011/07//Jul/Aug2011 VL - 48 IS - 4 M3 - Article SP - 1193 EP - 1203 SN - 00218669 AB - This paper discusses the construction of a Pareto tradeoff curve between the flight speed at which a platelike wing encounters an aeroelastic stability and the weight of that wing. The thickness of each finite element is used as a design variable in order to locate the optimal topological reinforcement as a function of the desired location along the Pareto front, as well as the planform of the wing. Three main challenges are addressed. First, the destabilizing flight speed must be located in an accurate and efficient manner. Second, the derivative of the flight speed with respect to a large number of thickness design variables must be computed analytically. Finally, the gradient-based optimization must contend with a discontinuous switch in the critical aeroelastic mode, slowing convergence. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - AEROELASTICITY KW - TOPOLOGY KW - SPEED KW - AERONAUTICS N1 - Accession Number: 65789595; Source Information: Jul/Aug2011, Vol. 48 Issue 4, p1193; Subject Term: AERODYNAMICS; Subject Term: AEROELASTICITY; Subject Term: TOPOLOGY; Subject Term: SPEED; Subject Term: AERONAUTICS; Subject Term: ; Number of Pages: 11p; ; Document Type: Article; L3 - 10.2514/1.C031185 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=65789595&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Perlovsky, Leonid T1 - LANGUAGE AND COGNITION JOINT ACQUISITION AND ROLE IN THINKING. JO - Journal of Communications Research JF - Journal of Communications Research Y1 - 2011/07// VL - 3 IS - 2/3 M3 - Article SP - 271 EP - 292 PB - Nova Science Publishers, Inc. SN - 19353537 AB - What is the role of language and cognition in thinking? Is language just a communication device, or is it fundamental in developing thoughts? Chomsky suggested that language is separate from cognition. Cognitive linguistics emphasizes a single mechanism of both. Neither led to a computational theory. Here we develop a hypothesis that language and cognition are two separate but closely interconnected mechanisms; the role of each is identified. Language stores cultural wisdom; cognition develops mental representations modeling surrounding world and adapts cultural knowledge to concrete circumstances of life. Language is acquired from surrounding language 'ready-made' and therefore can be acquired early in life. This early acquisition of language by five years of age encompasses the entire hierarchy from sounds to words, to phrases, to highest concepts existing in culture. Cognition requires experience. The paper presents arguments why cognition can not be acquired directly from experience; language is a necessary intermediary, a "teacher." A mathematical model is developed that overcomes previous difficulties towards a computational theory. This model implies a specific neural mechanism consistent with Arbib's "language prewired brain;" it also models recent neuroimaging data about cognition, remaining unnoticed by other theories. The suggested theory explains a number of properties of language and cognition, which previously seemed mysterious. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Communications Research is the property of Nova Science Publishers, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Language acquisition -- Research KW - Cognition KW - Communication -- Psychological aspects KW - Neurolinguistics -- Research KW - Brain imaging KW - cognition KW - concepts KW - dynamic logic KW - emotions KW - hierarchy KW - knowledge instinct KW - language KW - mind KW - thinking N1 - Accession Number: 86710475; Perlovsky, Leonid 1; Affiliations: 1: Harvard University and Air Force Research Laboratory; Issue Info: 2011, Vol. 3 Issue 2/3, p271; Thesaurus Term: Language acquisition -- Research; Thesaurus Term: Cognition; Thesaurus Term: Communication -- Psychological aspects; Subject Term: Neurolinguistics -- Research; Subject Term: Brain imaging; Author-Supplied Keyword: cognition; Author-Supplied Keyword: concepts; Author-Supplied Keyword: dynamic logic; Author-Supplied Keyword: emotions; Author-Supplied Keyword: hierarchy; Author-Supplied Keyword: knowledge instinct; Author-Supplied Keyword: language; Author-Supplied Keyword: mind; Author-Supplied Keyword: thinking; Number of Pages: 22p; Illustrations: 2 Black and White Photographs, 1 Diagram, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=86710475&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR ID - 104657261 T1 - Collaboration Technologies Improve Performance and Communication in Air Battle Management. AU - Strang, Adam J. AU - Knott, Benjamin A. AU - Funke, Gregory J. AU - Russell, Sheldon M. AU - Miller, Brent T. AU - Dukes, Allen W. AU - Courtice, April M. AU - Lyons, Joseph AU - Brown, Rebecca D. AU - Hyson, James AU - Bolia, Robert S. Y1 - 2011/07// N1 - Accession Number: 104657261. Language: English. Entry Date: 20110816. Revision Date: 20150711. Publication Type: Journal Article; pictorial; research; tables/charts. Journal Subset: Biomedical; Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services; Psychiatry/Psychology. Instrumentation: NASA-Task Load Index Questionnaire. NLM UID: 8915802. KW - Collaboration KW - Communication -- Methods KW - Psychomotor Performance KW - Military Personnel -- Psychosocial Factors KW - War KW - Teamwork KW - Air Travel KW - Computers and Computerization -- Utilization KW - Human KW - Electronics KW - Questionnaires KW - Computer Simulation KW - Computers and Computerization KW - Radio KW - Experimental Studies KW - Male KW - Female KW - Adolescence KW - Adult KW - Descriptive Statistics KW - Data Analysis Software KW - Post Hoc Analysis KW - Effect Size KW - Repeated Measures SP - 390 EP - 409 JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) JA - MILIT PSYCHOL VL - 23 IS - 4 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - Team communication is critical for Air Battle Management (ABM). In this study, two communication tools (text chat and electronic whiteboard) and two team resource aids (tabular and graphical displays) were introduced during simulated ABM to supplement radio communication. Results showed that combined chat and virtual whiteboard improved team performance, decreased number and duration of radio transmissions, but had mixed effects on workload. In addition, the graphical resource display improved team performance, decreased number and duration of radio transmissions, and reduced workload compared to the tabular display. These findings indicate that collaboration technologies introduced in this experiment may benefit military operations. SN - 0899-5605 AD - Consortium Research Fellows Program, Alexandria, Virginia AD - Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio AD - Ball Aerospace and Technologies Corporation, Dayton, Ohio AD - Office of Naval Research Global, Tokyo, Japan DO - 10.1080/08995605.2011.589348 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104657261&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Reinerman-Jones, Lauren Elizabeth AU - Matthews, Gerald AU - Langheim, Lisa K. AU - Warm, Joel S. T1 - Selection for vigilance assignments: a review and proposed new direction. JO - Theoretical Issues in Ergonomics Science JF - Theoretical Issues in Ergonomics Science Y1 - 2011/07// VL - 12 IS - 4 M3 - Article SP - 273 EP - 296 SN - 1463922X AB - Vigilance or sustained attention is a critical aspect of operational tasks including air-traffic control, airport security, industrial quality control and inspection, and medical screening and monitoring. Consequently, the selection of personnel for assignments involving vigilance is a key ergonomic concern. As reviewed herein, traditional approaches to personnel selection for tasks requiring vigilance have concentrated on unidimensional measures involving sensory acuity, aptitude, sex, age and personality factors. These approaches have been ineffective. In this article, we suggest an alternative approach in which the selection issue is considered in terms of a theory-driven analysis of different types of vigilance tasks and multidimensional predictors. As an example of that approach, we made use of a resource model of vigilance and measures of cerebral blood flow velocity and subjective state obtained from a short battery of high-workload tasks to successfully predict individual performance on subsequent high-workload sensory and cognitive vigilance tasks. [ABSTRACT FROM AUTHOR] AB - Copyright of Theoretical Issues in Ergonomics Science is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMPLOYEE selection KW - AUTOMATION KW - JOB descriptions KW - MATHEMATICAL models KW - EMPLOYEES -- Workload KW - TASK performance KW - METHODOLOGY KW - ABILITY KW - DOPPLER ultrasonography KW - AGE distribution (Demography) KW - ATTENTION KW - CEREBRAL circulation KW - PERSONALITY KW - SEX distribution (Demography) KW - THEORY KW - PREDICTIVE validity KW - individual differences KW - neuroergonomics KW - selection KW - stress KW - vigilance N1 - Accession Number: 62667382; Reinerman-Jones, Lauren Elizabeth 1; Matthews, Gerald 2; Langheim, Lisa K. 2; Warm, Joel S. 3; Affiliations: 1: Institute for Simulation and Training, University of Central Florida, Orlando, FL 32826, USA; 2: Department of Psychology, University of Cincinnati, Cincinnati, OH 45221, USA; 3: Air Force Research Laboratory (AFRL), Wright-Patterson Air Force Base, Dayton, OH, USA; Issue Info: Jul2011, Vol. 12 Issue 4, p273; Thesaurus Term: EMPLOYEE selection; Thesaurus Term: AUTOMATION; Thesaurus Term: JOB descriptions; Thesaurus Term: MATHEMATICAL models; Thesaurus Term: EMPLOYEES -- Workload; Thesaurus Term: TASK performance; Subject Term: METHODOLOGY; Subject Term: ABILITY; Subject Term: DOPPLER ultrasonography; Subject Term: AGE distribution (Demography); Subject Term: ATTENTION; Subject Term: CEREBRAL circulation; Subject Term: PERSONALITY; Subject Term: SEX distribution (Demography); Subject Term: THEORY; Subject Term: PREDICTIVE validity; Author-Supplied Keyword: individual differences; Author-Supplied Keyword: neuroergonomics; Author-Supplied Keyword: selection; Author-Supplied Keyword: stress; Author-Supplied Keyword: vigilance; Number of Pages: 24p; Illustrations: 1 Chart; Document Type: Article L3 - 10.1080/14639221003622620 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=62667382&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 104657440 T1 - Selection for vigilance assignments: a review and proposed new direction. AU - Reinerman-Jones, Lauren Elizabeth AU - Matthews, Gerald AU - Langheim, Lisa K. AU - Warm, Joel S. Y1 - 2011/07// N1 - Accession Number: 104657440. Language: English. Entry Date: 20110909. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Biomedical; Editorial Board Reviewed; Europe; Expert Peer Reviewed; Peer Reviewed; UK & Ireland. NLM UID: 101163424. KW - Attention KW - Personnel Selection -- Methods KW - Task Performance and Analysis KW - Automation KW - Aptitude -- Evaluation KW - Age Factors KW - Sex Factors KW - Personality KW - Job Characteristics KW - Models, Theoretical KW - Workload -- Classification KW - Ultrasonography, Doppler KW - Predictive Validity KW - Cerebrovascular Circulation -- Physiology SP - 273 EP - 296 JO - Theoretical Issues in Ergonomics Science JF - Theoretical Issues in Ergonomics Science JA - THEOR ISSUES ERGON SCI VL - 12 IS - 4 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - Vigilance or sustained attention is a critical aspect of operational tasks including air-traffic control, airport security, industrial quality control and inspection, and medical screening and monitoring. Consequently, the selection of personnel for assignments involving vigilance is a key ergonomic concern. As reviewed herein, traditional approaches to personnel selection for tasks requiring vigilance have concentrated on unidimensional measures involving sensory acuity, aptitude, sex, age and personality factors. These approaches have been ineffective. In this article, we suggest an alternative approach in which the selection issue is considered in terms of a theory-driven analysis of different types of vigilance tasks and multidimensional predictors. As an example of that approach, we made use of a resource model of vigilance and measures of cerebral blood flow velocity and subjective state obtained from a short battery of high-workload tasks to successfully predict individual performance on subsequent high-workload sensory and cognitive vigilance tasks. SN - 1463-922X AD - Institute for Simulation and Training, University of Central Florida, Orlando, FL 32826, USA AD - Department of Psychology, University of Cincinnati, Cincinnati, OH 45221, USA AD - Air Force Research Laboratory (AFRL), Wright-Patterson Air Force Base, Dayton, OH, USA DO - 10.1080/14639221003622620 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104657440&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2011-15158-003 AN - 2011-15158-003 AU - Schreiber, Brian T. AU - Schroeder, Mark AU - Bennett, Winston Jr. T1 - Distributed mission operations within-simulator training effectiveness. JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 2011/07// VL - 21 IS - 3 SP - 254 EP - 268 CY - United Kingdom PB - Taylor & Francis SN - 1050-8414 SN - 1532-7108 AD - Schreiber, Brian T., Lumir Research Institute, 195 Bluff Ave., Grayslake, IL, US, 60030 N1 - Accession Number: 2011-15158-003. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Schreiber, Brian T.; Lumir Research Institute, Grayslake, IL, US. Other Publishers: Lawrence Erlbaum. Release Date: 20110919. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Flight Simulation; Military Training. Minor Descriptor: Combat Experience. Classification: Transportation (4090); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 15. Issue Publication Date: Jul, 2011. Copyright Statement: Taylor & Francis Group, LLC. 2011. AB - This study examined the effectiveness of distributed mission operations (DMO) training using objective and subjective measures. DMO consists of multiplayer networked environments that facilitate the training of higher order individual and team-oriented combat skills. Objective measures included performance assessments, and subjective measures included performance ratings by subject matter experts and pilot perceptions of DMO utility. Results indicated that DMO training improved pilot performance, most notably in the reduction of the number of enemy strikers reaching their target and the number of F-16 mortalities. Considerations of real-world reductions in loss of life and expenditures are discussed.. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - simulator training effectiveness KW - distributed mission operations KW - combat skills KW - pilots KW - 2011 KW - Aircraft Pilots KW - Flight Simulation KW - Military Training KW - Combat Experience KW - 2011 U1 - Sponsor: US Air Force, US. Grant: F41624-97-D-5000. Recipients: No recipient indicated U1 - Sponsor: Air Force Research Laboratory/Human Effectiveness Directorate (AFRL/HEA). Recipients: No recipient indicated U1 - Sponsor: Air Combat Command (ACC). Recipients: No recipient indicated DO - 10.1080/10508414.2011.582448 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-15158-003&site=ehost-live&scope=site UR - brian.schreiber@lumirresearch.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2012-21858-007 AN - 2012-21858-007 AU - Giurgescu, Carmen AU - McFarlin, Barbara L. AU - Lomax, Jeneen AU - Craddock, Cindy AU - Albrecht, Amy T1 - Racial discrimination and the Black‐White gap in adverse birth outcomes: A review. JF - Journal of Midwifery & Women's Health JO - Journal of Midwifery & Women's Health JA - J Midwifery Womens Health Y1 - 2011/07//Jul-Aug, 2011 VL - 56 IS - 4 SP - 362 EP - 370 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 1526-9523 SN - 1542-2011 AD - McFarlin, Barbara L., University of Illinois College of Nursing, Room 858, 845 S Damen Ave M/C 802, Chicago, IL, US, 60612 N1 - Accession Number: 2012-21858-007. PMID: 21733107 Partial author list: First Author & Affiliation: Giurgescu, Carmen; University of Illinois College of Nursing, Chicago, IL, US. Other Publishers: Elsevier Science. Release Date: 20121126. Correction Date: 20160616. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Birth Weight; Premature Birth; Race and Ethnic Discrimination; Racial and Ethnic Differences; Health Disparities. Minor Descriptor: Blacks; Whites. Classification: Health & Mental Health Services (3370); Culture & Ethnology (2930). Population: Human (10). Age Group: Childhood (birth-12 yrs) (100); Neonatal (birth-1 mo) (120). Tests & Measures: Krieger Racial and Gender Discrimination Scale; McNeilly Perceived Racism Scale; Perceptions of Racism Scale DOI: 10.1037/t04256-000; Everyday Discrimination Scale. Methodology: Literature Review. References Available: Y. Page Count: 9. Issue Publication Date: Jul-Aug, 2011. Copyright Statement: The American College of Nurse-Midwives. 2011. AB - Introduction: The purpose of this integrative review was to evaluate what is known about the relationship between racial discrimination and adverse birth outcomes. Methods: A search of the Cumulative Index of Nursing and Allied Health Literature, MEDLINE, and PsycINFO was conducted. The keywords used were: preterm birth, premature birth, preterm delivery, preterm labor, low birth weight, very low birth weight, racism, racial discrimination, and prejudice. Ten research studies were reviewed. All of the studies included African American women in their samples, were conducted in the United States, and were written in English. We did not limit the year of publication for the studies. Data were extracted based on the birth outcomes of preterm birth, low birth weight, or very low birth weight. Results: A consistent positive relationship existed between perceptions of racial discrimination and preterm birth, low birth weight, and very low birth weight. No relationship was found between racial discrimination and gestational age at birth. Discussion: Future research should explore the effects of racial discrimination as a chronic stressor contributing to the persistent gap in birth outcomes between racial groups. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - racial discrimination KW - Black White gap KW - adverse birth outcomes KW - preterm birth KW - birth weight KW - health disparities KW - gestational age at birth KW - 2011 KW - Birth Weight KW - Premature Birth KW - Race and Ethnic Discrimination KW - Racial and Ethnic Differences KW - Health Disparities KW - Blacks KW - Whites KW - 2011 DO - 10.1111/j.1542-2011.2011.00034.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-21858-007&site=ehost-live&scope=site UR - UR - ORCID: 0000-0002-4577-3184 UR - bmcfar1@uic.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-15284-004 AN - 2011-15284-004 AU - Strang, Adam J. AU - Knott, Benjamin A. AU - Funke, Gregory J. AU - Russell, Sheldon M. AU - Miller, Brent T. AU - Dukes, Allen W. AU - Courtice, April M. AU - Lyons, Joseph AU - Brown, Rebecca D. AU - Hyson, James AU - Bolia, Robert S. T1 - Collaboration technologies improve performance and communication in air battle management. JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2011/07// VL - 23 IS - 4 SP - 390 EP - 409 CY - United Kingdom PB - Taylor & Francis SN - 0899-5605 SN - 1532-7876 AD - Strang, Adam J., Wright-Patterson AFB, AFRL 711 HPW/RHCP, 2255 H Street, Building 33, OH, US, 45433-7022 N1 - Accession Number: 2011-15284-004. Partial author list: First Author & Affiliation: Strang, Adam J.; Consortium Research Fellows Program, Alexandria, VA, US. Other Publishers: Educational Publishing Foundation; Lawrence Erlbaum. Release Date: 20110926. Correction Date: 20140714. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Communication Systems; Performance; Technology; Work Teams. Minor Descriptor: Electronic Communication; Graphical Displays; Group Performance; Job Performance; Work Load. Classification: Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: NASA-Task Load Index Questionnaire. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 20. Issue Publication Date: Jul, 2011. AB - Team communication is critical for Air Battle Management (ABM). In this study, two communication tools (text chat and electronic whiteboard) and two team resource aids (tabular and graphical displays) were introduced during simulated ABM to supplement radio communication. Results showed that combined chat and virtual whiteboard improved team performance, decreased number and duration of radio transmissions, but had mixed effects on workload. In addition, the graphical resource display improved team performance, decreased number and duration of radio transmissions, and reduced workload compared to the tabular display. These findings indicate that collaboration technologies introduced in this experiment may benefit military operations. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - collaboration technologies KW - performance KW - team communication KW - communication technology KW - team resource aids KW - text chat KW - electronic whiteboard KW - graphical displays KW - air battle management KW - team performance KW - workload KW - 2011 KW - Air Force Personnel KW - Communication Systems KW - Performance KW - Technology KW - Work Teams KW - Electronic Communication KW - Graphical Displays KW - Group Performance KW - Job Performance KW - Work Load KW - 2011 DO - 10.1037/h0094764 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-15284-004&site=ehost-live&scope=site UR - adam.strang.ctr@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Cimpoiasu, E. AU - Haugan, T. J. AU - Varanasi, C. V. AU - Levin, G. A. AU - Barnes, P. N. T1 - Effect of Oxygen Depletion on the Pinning Properties of YBa2Cu3Ox Films With Nanoinclusions. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2011/06/30/ Y1 - 2011/06/30/ VL - 21 IS - 3 M3 - Article SP - 3218 EP - 3221 SN - 10518223 AB - Applications of YBa2Cu3Ox (YBCO) coated conductors require strong vortex pinning to ensure a non-dissipative state over a large range of temperatures and magnetic field values. Incorporations of nanoparticles and nanorods have generally resulted in a substantial increase of pinning, but the actual mechanism producing this increase is not fully understood. This report addresses the origin of the enhanced pinning through comparative resistive measurements in the mixed state of thin films of YBCO, YBCO doped with Y2O3 nanoparticles, and YBCO doped with BaSnO3 nanorods. In order to study the effect of oxygen, all three kinds of samples have been annealed in air at 420^\circC. We have extracted and compared the resistive irreversibility lines before and after annealing. Our results indicate that while the nanoinclusions in the fully-oxygenated samples improve the pinning strength over that in the pure YBCO sample, the pinning enhancement essentially vanishes upon oxygen depletion. This is true for both pinning structures, nanorods and nanoparticles. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTING magnets KW - NANOPARTICLES KW - OXYGEN KW - THIN films KW - TEMPERATURE measurements KW - MAGNETORESISTANCE KW - SUPERCONDUCTORS KW - CRITICAL currents N1 - Accession Number: 60968702; Source Information: Jun2011, Vol. 21 Issue 3, p3218; Subject Term: SUPERCONDUCTING magnets; Subject Term: NANOPARTICLES; Subject Term: OXYGEN; Subject Term: THIN films; Subject Term: TEMPERATURE measurements; Subject Term: MAGNETORESISTANCE; Subject Term: SUPERCONDUCTORS; Subject Term: CRITICAL currents; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1109/TASC.2010.2090120 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=60968702&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Lu, Rongtao AU - Christianson, Caleb AU - Dizon, Jonathan AU - Wu, Judy AU - Haugan, Timothy AU - Barnes, Paul AU - Baca, F. Javier T1 - Investigation of Dynamic Behaviors of Low-Level Dissipation at YBa2Cu3O7 Grain Boundaries Using Low-Temperature Near-Field Scanning Microwave Microscopy. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2011/06/30/ Y1 - 2011/06/30/ VL - 21 IS - 3 M3 - Article SP - 3238 EP - 3242 SN - 10518223 AB - Near-field scanning microwave microscopy (NSMM) provides a unique nondestructive approach for detection of local dissipation with high sensitivity and high spatial resolution. With recently improved NSMM probes of spatial resolution of up to 400 nm (\sim 10^-6 wavelength), detection of dissipation was achieved on YBCO microbridges at currents more than three orders of magnitude below the Jc(T). In this work, we report characterization of the dynamic behavior of low-level dissipation at the grain boundary of YBa2Cu3O7-\delta microbridges as function of time and applied electrical current. On higher-angle grain boundary, the dissipation develops rapidly with increasing current and shows approximately linear dependence on current. On lower-angle grain boundary, nonlinear features were observed and attributed to bi-modal pattern of dissipation evolution of nucleation of isolated hot spots and their evolution. Comparison with the similar NSMM+IV measurement made on the “bulk” part of the same YBa2Cu3O7-\delta microbridges on a reduced temperature scale shows higher dissipation on the grain boundary can be mostly attributed to the lower Tc values on grain boundaries. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH temperature superconductors KW - ENERGY dissipation KW - CRYSTAL grain boundaries KW - TEMPERATURE measurements KW - BARIUM compounds KW - DENSITY currents KW - MICROWAVE imaging KW - PROBES (Electronic instruments) KW - NUCLEATION N1 - Accession Number: 60968739; Source Information: Jun2011, Vol. 21 Issue 3, p3238; Subject Term: HIGH temperature superconductors; Subject Term: ENERGY dissipation; Subject Term: CRYSTAL grain boundaries; Subject Term: TEMPERATURE measurements; Subject Term: BARIUM compounds; Subject Term: DENSITY currents; Subject Term: MICROWAVE imaging; Subject Term: PROBES (Electronic instruments); Subject Term: NUCLEATION; Subject Term: ; Number of Pages: 5p; ; Document Type: Article; L3 - 10.1109/TASC.2010.2090030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=60968739&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 104900597 T1 - Survival of Anesthetized Sus scrofa After Cycling (7-Second On/3-Second Off) Exposures to an Electronic Control Device for 3 Minutes. AU - Jauchem JR AU - Seaman RL AU - Fines DA Y1 - 2011/06//2011 Jun N1 - Accession Number: 104900597. Language: English. Entry Date: 20111014. Revision Date: 20150711. Publication Type: Journal Article; research. Journal Subset: Biomedical; USA. Special Interest: Psychiatry/Psychology. NLM UID: 8108948. KW - Electric Stimulation -- Equipment and Supplies KW - Analysis of Variance KW - Anesthetics, Intravenous -- Administration and Dosage KW - Animal Studies KW - Blood Chemical Analysis KW - Blood Glucose -- Analysis KW - Calcium -- Blood KW - Heart Rate KW - Hematocrit KW - Hydrogen-Ion Concentration KW - Isoenzymes -- Blood KW - Lactate Dehydrogenase -- Blood KW - Male KW - Muscle Contraction KW - Myoglobin -- Blood KW - Oxygen -- Blood KW - Pathology KW - Potassium -- Blood KW - Propofol -- Administration and Dosage KW - Respiratory Rate KW - Sodium -- Blood KW - Swine KW - Time Factors KW - Troponin -- Blood SP - 124 EP - 130 JO - American Journal of Forensic Medicine & Pathology JF - American Journal of Forensic Medicine & Pathology JA - AM J FORENSIC MED PATHOL VL - 32 IS - 2 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 0195-7910 AD - From the *Directed Energy Bioeffects Division, Human Effectiveness Directorate, US Air Force Research Laboratory; and tAdvanced Information Engineering Services (A General Dynamics Company), San Antonio, TX. U2 - PMID: 21464698. DO - 10.1097/PAF.0b013e3182186d5d UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104900597&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Katta, V.R. AU - Stouffer, Scott AU - Roquemore, W.M. T1 - Stability of lifted flames in centerbody burner JO - Combustion & Flame JF - Combustion & Flame Y1 - 2011/06// VL - 158 IS - 6 M3 - Article SP - 1149 EP - 1159 SN - 00102180 AB - Abstract: The centerbody burner was designed with the objective of understanding the coupled processes of formation, growth, and burn-off of soot through decoupling them using recirculation zones (RZs). Experimentally it was found that the sooting characteristics of the centerbody burner could be altered dramatically via simple changes in the operating conditions. One of the interesting operating regimes in which a flame lifts off and forms a column of soot was identified when oxygen in the annulus air jet was reduced sufficiently. This paper describes the numerical studies performed to aid the understanding of lifted flames in the centerbody burner. A time-dependent, axisymmetric, detailed-chemistry CFD model is used. Combustion and PAH formation are modeled using the Wang–Frenklach (99 species and 1066 reactions) mechanism, and soot is simulated using a two-equation model of Lindstedt. Calculations have predicted the structure of the lifted flame very well. Two RZs [outer (ORZ) and inner (IRZ)] are formed between the fuel and air jets. A diffusion flame that is lifted-off the centerbody plate anchors steadily to the outer periphery of the ORZ. A near-perfect match between the computed and measured flame lift-off heights is achieved. RZs transport soot that is formed in the flame toward the face of the centerbody and create the soot column. Ethylene and its lighter fuel fragments that are formed in the RZs diffuse toward the annulus air jet and establish a mixing layer with the inwardly diffusing oxygen. Heat diffusing away from the RZs initiates autoignition reactions in the mixing layer. A flame with a triple-flame-base structure becomes established at a location where the ignition-delay time matches the residence time. Soot that is transported into the RZs is found to have a significant effect on the flame lift-off height. Numerical experiments are performed to aid the understanding of the relationship between soot and flame lift-off. Radiation from the soot decreases the temperature, slows the autoignition process, and increases the lift-off height. Soot oxidation consumes O and OH radicals, slows the autoignition reactions, and increases the lift-off height. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Radiation KW - Fuel KW - Soot KW - Diffusion KW - Flame stability KW - Decoupling (Mathematics) KW - Axial flow KW - Automobile ignition KW - Flame KW - Autoignition KW - Diffusion flames KW - Modeling KW - Triple flames N1 - Accession Number: 59927656; Katta, V.R. 1; Email Address: vrkatta@gmail.com; Stouffer, Scott 2; Roquemore, W.M. 3; Affiliations: 1: Innovative Scientific Solutions Inc., 2766 Indian Ripple Road, Dayton, OH 45440, United States; 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, United States; 3: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, United States; Issue Info: Jun2011, Vol. 158 Issue 6, p1149; Thesaurus Term: Radiation; Thesaurus Term: Fuel; Thesaurus Term: Soot; Thesaurus Term: Diffusion; Subject Term: Flame stability; Subject Term: Decoupling (Mathematics); Subject Term: Axial flow; Subject Term: Automobile ignition; Subject Term: Flame; Author-Supplied Keyword: Autoignition; Author-Supplied Keyword: Diffusion flames; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Triple flames; NAICS/Industry Codes: 454319 Other fuel dealers; NAICS/Industry Codes: 454310 Fuel Dealers; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.combustflame.2010.10.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=59927656&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 104671448 T1 - Stress training improves performance during a stressful flight. AU - McClernon CK AU - McCauley ME AU - O'Connor PE AU - Warm JS AU - McClernon, Christopher K AU - McCauley, Michael E AU - O'Connor, Paul E AU - Warm, Joel S Y1 - 2011/06// N1 - Accession Number: 104671448. Language: English. Entry Date: 20110916. Revision Date: 20170228. Publication Type: journal article; research; randomized controlled trial. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. NLM UID: 0374660. KW - Aerospace Medicine KW - Professional Competence KW - Stress, Psychological -- Prevention and Control KW - Task Performance and Analysis KW - Accidents, Aviation -- Prevention and Control KW - Accidents, Aviation -- Psychosocial Factors KW - Adaptation, Psychological KW - Adult KW - Female KW - Human KW - Male KW - Randomized Controlled Trials KW - Young Adult SP - 207 EP - 218 JO - Human Factors JF - Human Factors JA - HUM FACTORS VL - 53 IS - 3 PB - Sage Publications Inc. AB - Objective: This study investigated whether stress training introduced during the acquisition of simulator-based flight skills enhances pilot performance during subsequent stressful flight operations in an actual aircraft.Background: Despite knowledge that preconditions to aircraft accidents can be strongly influenced by pilot stress, little is known about the effectiveness of stress training and how it transfers to operational flight settings.Method: For this study, 30 participants with no flying experience were assigned at random to a stress-trained treatment group or a control group. Stress training consisted of systematic pairing of skill acquisition in a flight simulator with stress coping mechanisms in the presence of a cold pressor. Control participants received identical flight skill acquisition training but without stress training. Participants then performed a stressful flying task in a Piper Archer aircraft.Results: Stress-trained research participants flew the aircraft more smoothly, as recorded by aircraft telemetry data, and generally better, as recorded by flight instructor evaluations, than did control participants.Conclusions: Introducing stress coping mechanisms during flight training improved performance in a stressful flying task.Application: The results of this study indicate that stress training during the acquisition of flight skills may serve to enhance pilot performance in stressful operational flight and, therefore, might mitigate the contribution of pilot stress to aircraft mishaps. SN - 0018-7208 AD - Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA AD - Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA. christopher.mcclernon@us.af.mil U2 - PMID: 21830508. DO - 10.1177/0018720811405317 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104671448&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 104671447 T1 - Trustworthiness and IT suspicion: an evaluation of the nomological network. AU - Lyons JB AU - Stokes CK AU - Eschleman KJ AU - Alarcon GM AU - Barelka AJ AU - Lyons, Joseph B AU - Stokes, Charlene K AU - Eschleman, Kevin J AU - Alarcon, Gene M AU - Barelka, Alex J Y1 - 2011/06// N1 - Accession Number: 104671447. Language: English. Entry Date: 20110916. Revision Date: 20170228. Publication Type: journal article; research. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. NLM UID: 0374660. KW - Attitude to Computers KW - Automation KW - Trust KW - Adolescence KW - Adult KW - Aged KW - Factor Analysis KW - Female KW - Male KW - Middle Age KW - Regression KW - Young Adult SP - 219 EP - 229 JO - Human Factors JF - Human Factors JA - HUM FACTORS VL - 53 IS - 3 PB - Sage Publications Inc. AB - Objective: The authors evaluated the validity of trust in automation and information technology (IT) suspicion by examining their factor structure and relationship with decision confidence.Background: Research on trust has burgeoned, yet the dimensionality of trust remains elusive. Researchers suggest that trust is a unidimensional construct, whereas others believe it is multidimensional. Additionally, novel constructs,such as IT suspicion, have yet to be distinguished from trust in automation. Research is needed to examine the overlap between these constructs and to determine the dimensionality of trust in automation.Method: Participants (N = 72) engaged in a computer-based convoy scenario involving an automated decision aid. The aid fused real-time sensor data and provided route recommendations to participants who selected a route based on (a) a map with historical enemy information, (b) sensor inputs, and (c) automation suggestions. Measures for trust in automation and IT suspicion were administered after individuals interacted with the automation.Results: Results indicated three orthogonal factors: trust, distrust, and IT suspicion. Each variable was explored as a predictor of decision confidence. Distrust and trust evidenced unique influences on decision confidence, albeit at different times. Higher distrust related to less confidence, whereas trust related to greater confidence.Conclusion: The current study found that trust in automation was best characterized by two orthogonal dimensions (trust and distrust). Both trust and distrust were found to be independent from IT suspicion,and both distrust and trust uniquely predicted decision confidence.Application: Researchers may consider using separate measures for trust and distrust in future studies. SN - 0018-7208 AD - Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7604, USA AD - Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7604, USA. Joseph.lyons@wpafb.af.mil U2 - PMID: 21830509. DO - 10.1177/0018720811406726 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104671447&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Bochove, Erik J. AU - Aceves, Alejandro B. AU - Braiman, Yehuda AU - Colet, Pere AU - Deiterding, Ralf AU - Jacobo, Adrián AU - Miller, Casey A. AU - Rhodes, Charley AU - Shakir, Sami A. T1 - Model of the Self-Q-Switching Instability of Passively Phased Fiber Laser Arrays. JO - IEEE Journal of Quantum Electronics JF - IEEE Journal of Quantum Electronics J1 - IEEE Journal of Quantum Electronics PY - 2011/06// Y1 - 2011/06// VL - 47 IS - 6 M3 - Article SP - 777 EP - 785 SN - 00189197 AB - We present a simple model for self-pulsation instability in passively phased high power optical fiber amplifier arrays with external feedback. Its key features are, first, the feedback level's sensitivity, and thus that of the cavity Q-value, to small phase changes of the array fields, and, second, the effect of refractive index nonlinearity in the amplifiers. The model's prediction of an instability threshold for arrays of at least two amplifiers is confirmed by a linearized stability analysis of a system in ring-cavity geometry, and the magnitudes of predicted power levels are well within the domain of recent experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Journal of Quantum Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIBER lasers KW - BEAMFORMING KW - INDUSTRIAL applications KW - MILITARY applications of lasers KW - OPTOELECTRONICS KW - FEEDBACK (Electronics) N1 - Accession Number: 62560048; Source Information: Jun2011, Vol. 47 Issue 6, p777; Subject Term: FIBER lasers; Subject Term: BEAMFORMING; Subject Term: INDUSTRIAL applications; Subject Term: MILITARY applications of lasers; Subject Term: OPTOELECTRONICS; Subject Term: FEEDBACK (Electronics); Subject Term: ; Number of Pages: 9p; ; Document Type: Article; L3 - 10.1109/JQE.2011.2112637 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=62560048&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Pochet, Michael C. AU - Naderi, Nader A. AU - Kovanis, Vassilios AU - Lester, Luke F. T1 - Modeling the Dynamic Response of an Optically-Injected Nanostructure Diode Laser. JO - IEEE Journal of Quantum Electronics JF - IEEE Journal of Quantum Electronics J1 - IEEE Journal of Quantum Electronics PY - 2011/06// Y1 - 2011/06// VL - 47 IS - 6 M3 - Article SP - 827 EP - 833 SN - 00189197 AB - We reformulate a dimensionless approach to evaluate the operational dynamics of an optically injected nanostructure laser as a function of the injection strength and the detuning frequency to account for the large nonlinear gain component associated with nanostructure lasers through the nonlinear carrier relaxation rate and gain compression coefficient. The large nonlinear carrier relaxation rate and gain compression coefficient are shown to impact the level of stability numerically predicted in the optically injected laser at low injected power levels. The numerical model is verified experimentally by optically injecting a quantum-dash Fabry-Perot laser with an operating wavelength of approximately 1550 nm. The quantum-dash laser's large damping rate, gain compression coefficient, and sufficiently small linewidth enhancement factor are observed to inhibit period-doubling and chaotic operation under zero frequency-detuning conditions. The inclusion of the nonlinear carrier relaxation rate in the simulation is shown to greatly enhance the agreement between the numerical predictions and the experimentally observed dynamics. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Journal of Quantum Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURES -- Research KW - DIODES KW - LASERS -- Research KW - DIMENSIONLESS numbers KW - MODELS & modelmaking N1 - Accession Number: 62560052; Source Information: Jun2011, Vol. 47 Issue 6, p827; Subject Term: NANOSTRUCTURES -- Research; Subject Term: DIODES; Subject Term: LASERS -- Research; Subject Term: DIMENSIONLESS numbers; Subject Term: MODELS & modelmaking; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/JQE.2011.2124445 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=62560052&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Vargas, Jorge M. AU - Bogozi, Albert AU - Noel, Julien AU - Hijazi, Yazan AU - Vlasov, Yuriy A. AU - Larkins, Grover L. T1 - Reliability of Suspended Bridges on Superconducting Microstrip Filters Using MEMS Switches. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2011/06// Y1 - 2011/06// VL - 21 IS - 3 M3 - Article SP - 567 EP - 570 SN - 10518223 AB - This work proposes to use capacitive micro-electro-mechanical systems (MEMS) switches built on a superconducting microstrip hairpin filter to investigate the reliability of MEMS for long term survivability. This device is made of a \YBa2\Cu3\O7 thin film deposited on a 20 mm \times 20 mm \LaAlO3 substrate by pulsed laser deposition and \BaTiO3 by RF magnetron sputtering, which is utilized as a dielectric insulation layer at the switching points of contact. The major concern for capacitive MEMS switches is stiction between the gold suspended bridge membrane (top layer) and the dielectric material (bottom layer). The main failure mode results from charge build-up at the bottom layer which in turn depends on the actuation voltage. The actuation voltage measured at room and cryogenic temperature is used to derive and calculate the Young's modulus formula which takes into consideration the device geometry, residual stress and mechanical properties of the device. Modified Young's modulus equation will be validated through reliability data of membrane actuation and failure mode. This equation will in turn be used in modeling other RF MEMS devices operating at cryogenic temperatures. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RELIABILITY (Engineering) KW - SUPERCONDUCTING magnets KW - STRIP transmission lines KW - MICROWAVE filters KW - MICROELECTROMECHANICAL systems KW - CRYOELECTRONICS KW - COPPER oxide KW - MAGNETRON sputtering N1 - Accession Number: 60967867; Source Information: Jun2011, Vol. 21 Issue 3, p567; Subject Term: RELIABILITY (Engineering); Subject Term: SUPERCONDUCTING magnets; Subject Term: STRIP transmission lines; Subject Term: MICROWAVE filters; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: CRYOELECTRONICS; Subject Term: COPPER oxide; Subject Term: MAGNETRON sputtering; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1109/TASC.2010.2092736 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=60967867&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Sihn, Sangwook AU - Roy, Ajit K. T1 - Micromechanical analysis for transverse thermal conductivity of composites. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2011/06// VL - 45 IS - 11 M3 - Article SP - 1245 EP - 1255 SN - 00219983 AB - Micromechanical analyses were conducted for the prediction of transverse thermal conductivity of laminated composites. We reproduced and reinvestigated both analytic and numerical models with regular and randomly distributed fibers in matrix material. A parametric study was conducted for wide ranges of fiber volume fractions and fiber-to-matrix thermal conductivity ratios. The numerical solutions using finite element (FE) analysis were compared with various analytic solutions from simple and enhanced rule or mixtures and an effective inclusion method (EIM). It was found that the EIM yields a reasonably agreeable solution with the FE solution using a hexagonal-array of regular fiber distribution for wide ranges of fiber volume fraction and fiber-to-matrix thermal conductivity ratios, which makes the EIM a useful method in predicting various multiphysical transverse properties of composites. Comparison of the results from the regular- and random-fiber models indicates that the transverse thermal conductivity of composites can significantly be affected by the random fiber distributions, especially at high fiber volume fractions. A similar conclusion was made for the foams with random pore distribution. It was shown that the predictions with the random fiber distribution agree well with the experimental data. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROMECHANICS KW - THERMAL conductivity KW - COMPOSITE materials KW - LAMINATED materials KW - FINITE element method KW - RANDOM variables KW - MATHEMATICAL models KW - PARAMETER estimation KW - composites KW - finite element analysis KW - random fiber distribution KW - thermal conductivity N1 - Accession Number: 60980843; Sihn, Sangwook 1; Roy, Ajit K. 2; Source Information: Jun2011, Vol. 45 Issue 11, p1245; Subject: MICROMECHANICS; Subject: THERMAL conductivity; Subject: COMPOSITE materials; Subject: LAMINATED materials; Subject: FINITE element method; Subject: RANDOM variables; Subject: MATHEMATICAL models; Subject: PARAMETER estimation; Author-Supplied Keyword: composites; Author-Supplied Keyword: finite element analysis; Author-Supplied Keyword: random fiber distribution; Author-Supplied Keyword: thermal conductivity; Number of Pages: 11p; Document Type: Article; Full Text Word Count: 6143 L3 - 10.1177/0021998310382311 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=60980843&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Dewey, Steven Clifford AU - Whetstone, Zachary David AU - Kearfott, Kimberlee Jane T1 - A method for determining the analytical form of a radionuclide depth distribution using multiple gamma spectrometry measurements JO - Journal of Environmental Radioactivity JF - Journal of Environmental Radioactivity Y1 - 2011/06// VL - 102 IS - 6 M3 - Article SP - 581 EP - 588 SN - 0265931X AB - Abstract: When characterizing environmental radioactivity, whether in the soil or within concrete building structures undergoing remediation or decommissioning, it is highly desirable to know the radionuclide depth distribution. This is typically modeled using continuous analytical expressions, whose forms are believed to best represent the true source distributions. In situ gamma ray spectroscopic measurements are combined with these models to fully describe the source. Currently, the choice of analytical expressions is based upon prior experimental core sampling results at similar locations, any known site history, or radionuclide transport models. This paper presents a method, employing multiple in situ measurements at a single site, for determining the analytical form that best represents the true depth distribution present. The measurements can be made using a variety of geometries, each of which has a different sensitivity variation with source spatial distribution. Using non-linear least squares numerical optimization methods, the results can be fit to a collection of analytical models and the parameters of each model determined. The analytical expression that results in the fit with the lowest residual is selected as the most accurate representation. A cursory examination is made of the effects of measurement errors on the method. [Copyright &y& Elsevier] AB - Copyright of Journal of Environmental Radioactivity is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Radioisotopes KW - Background radiation KW - Environmental remediation KW - Gamma ray spectrometry KW - Germanium diodes KW - Measurement errors KW - Mathematical optimization KW - Least squares KW - Calibration KW - Environmental radioactivity KW - Gamma spectrometry KW - Germanium detector KW - In situ measurements N1 - Accession Number: 60665250; Dewey, Steven Clifford 1; Email Address: sdewey001@gmail.com; Whetstone, Zachary David 2; Email Address: zacwhets@umich.edu; Kearfott, Kimberlee Jane 2; Email Address: kearfott@umich.edu; Affiliations: 1: United States Air Force School of Aerospace Medicine, Occupational Environmental Health Division, Health Physics Branch, Radiation Analysis Laboratories, 2350 Gillingham Drive, Brooks City-Base, TX 78235, United States; 2: Radiological Health Engineering Laboratory, Department of Nuclear Engineering and Radiological Sciences, University of Michigan, 2355 Bonisteel Boulevard, 1906 Cooley Building, Ann Arbor, MI 48109-2104, United States; Issue Info: Jun2011, Vol. 102 Issue 6, p581; Thesaurus Term: Radioisotopes; Thesaurus Term: Background radiation; Thesaurus Term: Environmental remediation; Subject Term: Gamma ray spectrometry; Subject Term: Germanium diodes; Subject Term: Measurement errors; Subject Term: Mathematical optimization; Subject Term: Least squares; Author-Supplied Keyword: Calibration; Author-Supplied Keyword: Environmental radioactivity; Author-Supplied Keyword: Gamma spectrometry; Author-Supplied Keyword: Germanium detector; Author-Supplied Keyword: In situ measurements; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 562910 Remediation Services; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jenvrad.2011.03.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=60665250&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Asheghian, Laila AU - Reich, Greg AU - Enke, Andrew AU - Kudva, Jay T1 - Shear Morphing Skins - Simulation and Testing of Optimized Design. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2011/06// VL - 22 IS - 9 M3 - Article SP - 945 EP - 960 SN - 1045389X AB - Previous work designed and tested novel morphing wing designs that were enabled by ‘shear-morphing’ skins capable of withstanding 400 psf (19.15 kPa) airloads while simultaneously undergoing shear strains over 100%. These ad hoc skin designs consisted of high-strain silicone facesheets supported by thin, closely spaced aluminum strands glued to the facesheets and bounded by pin-jointed frames. While these performed well in wind tunnel and flight tests, two areas for improvement were identified: reduction in manufacturing complexity and reduction in actuation force requirements. In this research, with the use of high-fidelity modeling (ANSYS) and in-house testing, a new design was obtained that met both of the desired objectives using novel materials and single-piece support structure fabrication. Using an optimized design from analysis, the ANSYS code was validated through manufacture and testing of panels. This article details the results of testing and compares them to predictions of both the ANSYS code and N-MAS baseline designs values by various test setups. Results presented include shear morphing forces/energy, out-of-plane displacement under air loading, and 3D photometric analysis of shearing panels for identification of stresses/strains and wrinkling initialization in the skin. Testing provided substantiation of the ANSYS code, matching the general predicted trends despite a wide variability in material properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOADS (Mechanics) KW - STRAINS & stresses (Mechanics) KW - PHOTOMETRY KW - AIRPLANE wings KW - STRUCTURAL frames KW - SILICONES KW - ALUMINUM KW - composite skin KW - morphing skin KW - shear morphing N1 - Accession Number: 65151990; Asheghian, Laila 1; Reich, Greg 2; Enke, Andrew 3; Kudva, Jay 3; Affiliations: 1: NextGen Aeronautics, 2780 Skypark Drive, Suite 400, Torrance, CA 90505, USA, lasheghian@nextgenaero.com; 2: Air Vehicles Directorate, Air Force Research Laboratory, 2210 Eighth Street, WPAFB, OH 45433, USA; 3: NextGen Aeronautics, 2780 Skypark Drive, Suite 400, Torrance, CA 90505, USA; Issue Info: Jun2011, Vol. 22 Issue 9, p945; Subject Term: LOADS (Mechanics); Subject Term: STRAINS & stresses (Mechanics); Subject Term: PHOTOMETRY; Subject Term: AIRPLANE wings; Subject Term: STRUCTURAL frames; Subject Term: SILICONES; Subject Term: ALUMINUM; Author-Supplied Keyword: composite skin; Author-Supplied Keyword: morphing skin; Author-Supplied Keyword: shear morphing; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 238130 Framing Contractors; NAICS/Industry Codes: 238350 Finish Carpentry Contractors; Number of Pages: 16p; Document Type: Article; Full Text Word Count: 5137 L3 - 10.1177/1045389X11411120 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=65151990&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Aldrin, John C. AU - Blodgett, Mark P. AU - Lindgren, Eric A. AU - Steffes, Gary J. AU - Knopp, Jeremy S. T1 - Scattering of obliquely incident shear waves from a cylindrical cavity. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2011/06// VL - 129 IS - 6 M3 - Article SP - 3661 EP - 3675 SN - 00014966 AB - Prior work has proposed the use of ultrasonic angle-beam shear wave techniques to detect cracks of varying angular location around fastener sites by generating and detecting creeping waves. To better understand the nature of the scattering problem and quantify the role of creeping waves in fastener site inspections, a 3D analytical model was developed for the propagation and scattering of an obliquely incident plane shear wave from a cylindrical cavity with arbitrary shear wave polarization. The generation and decay of the spiral creeping waves was found to be dependent on both the angle of incidence and polarization of the plane shear wave. A difference between the angle of displacement in 3D and the direction of propagation for the spiral creeping wave was observed and attributed to differences in the curvature of the cavity surface for the tangential and vertical (z) directions. Using the model, practical insight was presented on measuring the displacement response in the far-field from the hole. Both analytical and experimental results highlighted the value of the diffracted and leaky spiral creeping wave signals for nondestructive evaluation of a crack located on the cavity. Last, array and signal processing methods are discussed to improve the resolution of the weaker creeping wave signals in the presence of noise. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHEAR waves KW - SIGNALS & signaling KW - ULTRASONIC testing KW - ULTRASONIC waves KW - POLARIZATION spectroscopy N1 - Accession Number: 61468690; Aldrin, John C. 1; Email Address: aldrin@computationaltools.com; Blodgett, Mark P. 1; Lindgren, Eric A. 1; Steffes, Gary J. 1; Knopp, Jeremy S. 1; Affiliations: 1 : Air Force Research Laboratory (AFRL/RXLP), 2230 Tenth Street, Wright-Patterson AFB, Ohio 45433; Source Info: Jun2011, Vol. 129 Issue 6, p3661; Subject Term: SHEAR waves; Subject Term: SIGNALS & signaling; Subject Term: ULTRASONIC testing; Subject Term: ULTRASONIC waves; Subject Term: POLARIZATION spectroscopy; Number of Pages: 15p; Document Type: Article L3 - 10.1121/1.3583540 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=61468690&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR AU - Mason, Robert B. AU - Clark, Sarah AU - Klingenberg, Melissa AU - Berman, Elizabeth AU - Voevodin, Natasha T1 - Alternatives to dichromate sealer in anodizing operations JO - Metal Finishing JF - Metal Finishing Y1 - 2011/06// VL - 109 IS - 4/5 M3 - Article SP - 25 EP - 32 SN - 00260576 AB - Abstract: Ogden Air Logistics Center (OO-ALC) is the primary facility within the United States Air Force for maintaining and overhauling aircraft landing gear. Aluminum landing gear components are anodized at OO-ALC to provide enhanced corrosion resistance, paint adhesion, and wear resistance; a sodium dichromate sealing operation usually completes the anodizing process. During sealing, the pores of the anodized (oxide) layer are hydrated, which fills the pores and provides improved corrosion resistance. However, this sealer contains hexavalent chromium, which is listed on the Environmental Protection Agency''s list of industrial toxic chemicals that are targeted for voluntary reduction or elimination. The specification that outlines the sodium dichromate sealing process delineates three alternative processes that are approved for use: 1) boiling de-ionized water, 2) cobalt acetate, and 3) nickel acetate. While some research to support the use of these and other sealing processes has been gathered under past efforts, additional work must be conducted to fully integrate non-chromate sealers into OO-ALC''s anodizing operations. To meet this need, the Air Force Research Laboratory tasked Concurrent Technologies Corporation to identify viable alternatives to the sodium dichromate sealer, conduct testing on these alternatives, and recommend the most promising sealer(s) for implementation based on the test results. This paper will describe the requirements for anodizing and sealing operations within OO-ALC, as well as the sealing technologies that are available and a path forward to demonstrate/validate the most promising alternatives for the specific needs and applications of OO-ALC. [Copyright &y& Elsevier] AB - Copyright of Metal Finishing is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEALING compounds KW - CHROMATES KW - METALS -- Anodic oxidation KW - ALUMINUM KW - CORROSION resistant materials KW - SEALING (Seal hunting) KW - POISONS KW - UNITED States N1 - Accession Number: 67383866; Mason, Robert B. 1; Clark, Sarah 1; Klingenberg, Melissa 1; Berman, Elizabeth 2; Voevodin, Natasha 3; Affiliations: 1: Concurrent Technologies Corporation, Largo, Fla.; Dayton, Ohio; and Johnstown, Pa.; 2: United States Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio; 3: United States Air Force Research Laboratory/University of Dayton Research Institute Dayton, Ohio; Issue Info: Jun2011, Vol. 109 Issue 4/5, p25; Subject Term: SEALING compounds; Subject Term: CHROMATES; Subject Term: METALS -- Anodic oxidation; Subject Term: ALUMINUM; Subject Term: CORROSION resistant materials; Subject Term: SEALING (Seal hunting); Subject Term: POISONS; Subject: UNITED States; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 332813 Electroplating, Plating, Polishing, Anodizing, and Coloring; NAICS/Industry Codes: 114113 Salt water fishing; NAICS/Industry Codes: 325520 Adhesive Manufacturing; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/S0026-0576(11)80065-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=67383866&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Mastroianni, George R. AU - Scott, Wilbur J. T1 - Reframing Suicide in the Military. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College J1 - Parameters: U.S. Army War College PY - 2011///Summer2011 Y1 - 2011///Summer2011 VL - 41 IS - 2 M3 - Article SP - 6 EP - 21 SN - 00311723 AB - The article looks at suicides of U.S. military personnel as of 2011. It notes that the suicide rate has risen sharply since 2001 in the Army and Marines, but not in the Navy or Air Force. The author presents evidence countering some widespread assumptions about military suicide, for instance that multiple deployments to war zones are a significant risk factor. He outlines the theories of sociologist Emile Durkheim and psychologist Thomas Joiner to develop a better understanding of the issue. KW - MILITARY personnel -- Suicidal behavior KW - UNITED States -- Armed Forces KW - SUICIDE -- Risk factors KW - SUICIDE -- United States -- Prevention KW - UNITED States N1 - Accession Number: 70456541; Source Information: Summer2011, Vol. 41 Issue 2, p6; Subject Term: MILITARY personnel -- Suicidal behavior; Subject Term: UNITED States -- Armed Forces; Subject Term: SUICIDE -- Risk factors; Subject Term: SUICIDE -- United States -- Prevention; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 16p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=70456541&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 104673251 T1 - SPEECH INTELLIGIBILITY DIFFERENCES ACROSS SOUND CLASSES WITH IN-THE-EAR AND FREE-FIELD MICROPHONES IN QUIET. AU - Estis, Julie M. AU - Parisi, Julie A. AU - Moore, Robert E. AU - Brungart, Douglas S. Y1 - 2011/06// N1 - Accession Number: 104673251. Language: English. Entry Date: 20110831. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Allied Health; Biomedical; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Physical Therapy; Psychiatry/Psychology. NLM UID: 0401131. KW - Speech Perception KW - Transducers KW - Noise -- Adverse Effects KW - Human KW - Military Services KW - Communication KW - Male KW - Female KW - Adult KW - Descriptive Statistics KW - Reliability KW - Pearson's Correlation Coefficient KW - Two-Way Analysis of Variance KW - Repeated Measures KW - One-Way Analysis of Variance SP - 845 EP - 859 JO - Perceptual & Motor Skills JF - Perceptual & Motor Skills JA - PERCEPT MOTOR SKILLS VL - 112 IS - 3 CY - Missoula, Montana PB - Ammons Scientific, Ltd. SN - 0031-5125 AD - Department of Speech Pathology and Audiology, University of South Alabama AD - Air Force Research Laboratory, Wright Patterson AFB, Ohio U2 - PMID: 21853774. DO - 10.2466/24.28.PMS.112.3.845-859 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104673251&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Im, Yunseok AU - Jang, Myoseon AU - Delcomyn, Carrie A. AU - Henley, Michael V. AU - Hearn, John D. T1 - The effects of active chlorine on photooxidation of 2-methyl-2-butene JO - Science of the Total Environment JF - Science of the Total Environment Y1 - 2011/06// VL - 409 IS - 13 M3 - Article SP - 2652 EP - 2661 SN - 00489697 AB - Abstract: Active chlorine comprising hypochlorite (OCl−), hypochlorous acid (HOCl) and chlorine (Cl2) is the active constituent in bleach formulations for a variety of industrial and consumer applications. However, the strong oxidative reactivity of active chlorine can cause adverse effects on both human health and the environment. In this study, aerosolized Oxone® [2KHSO5, KHSO4, K2SO4] with saline solution has been utilized to produce active chlorine (HOCl and Cl2). To investigate the impact of active chlorine on volatile organic compound (VOC) oxidation, 2-methyl-2-butene (MB) was photoirradiated in the presence of active chlorine using a 2-m3 Teflon film indoor chamber. The resulting carbonyl products produced from photooxidation of MB were derivatized with O-(2,3,4,5,6-pentafluorobenzyl) hydroxyamine hydrochloride (PFBHA) and analyzed using gas chromatograph–ion trap mass spectrometer (GC/ITMS). The photooxidation of MB in the presence of active chlorine was simulated with an explicit kinetic model using a chemical solver (Morpho) which included both Master Chemical Mechanism (MCM) and Cl radical reactions. The reaction rate constants of a Cl radical with MB and its oxidized products were estimated using a Structure–Reactivity Relationship method. Under dark conditions no effect of active chlorine on MB oxidation was apparent, whereas under simulated daylight conditions (UV irradiation) rapid MB oxidation was observed due to photo-dissociation of active chlorine. The model simulation agrees with chamber data showing rapid production of oxygenated products that are characterized using GC/ITMS. Ozone formation was enhanced when MB was oxidized in the presence of irradiated active chlorine and NO x . [Copyright &y& Elsevier] AB - Copyright of Science of the Total Environment is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Chlorine KW - Oxidation KW - Methyl groups KW - Butene KW - Bleaching materials KW - Irradiation KW - Gas chromatography/Mass spectrometry (GC-MS) KW - Ozone KW - Hypochlorites KW - 2-Methyl-2-butene KW - Active chlorine KW - Explicit kinetic model KW - Ozone formation KW - Photooxidation KW - Structure–Reactivity Relationship N1 - Accession Number: 60519305; Im, Yunseok 1; Jang, Myoseon 1; Email Address: mjang@ufl.edu; Delcomyn, Carrie A. 2; Henley, Michael V. 3; Hearn, John D. 2; Affiliations: 1: Department of Environmental Engineering Sciences, University of Florida, P.O. Box 116450, Gainesville, FL 32611, United States; 2: Applied Research Associates, Inc., Tyndall AFB, FL, United States; 3: Air Force Research Laboratory, Airbase Technologies Division, Tyndall AFB, FL, United States; Issue Info: Jun2011, Vol. 409 Issue 13, p2652; Thesaurus Term: Chlorine; Thesaurus Term: Oxidation; Thesaurus Term: Methyl groups; Thesaurus Term: Butene; Thesaurus Term: Bleaching materials; Thesaurus Term: Irradiation; Thesaurus Term: Gas chromatography/Mass spectrometry (GC-MS); Thesaurus Term: Ozone; Subject Term: Hypochlorites; Author-Supplied Keyword: 2-Methyl-2-butene; Author-Supplied Keyword: Active chlorine; Author-Supplied Keyword: Explicit kinetic model; Author-Supplied Keyword: Ozone formation; Author-Supplied Keyword: Photooxidation; Author-Supplied Keyword: Structure–Reactivity Relationship; NAICS/Industry Codes: 325612 Polish and Other Sanitation Good Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 325181 Alkali and chlorine manufacturing; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.scitotenv.2011.03.038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=60519305&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2012-32197-001 AN - 2012-32197-001 AU - Crow, Brent AU - Niemczyk, Mary AU - Andrews, Dee AU - Fitzgerald, Patricia T1 - Role playing in flight instructor training: How effective is it? JF - International Journal of Applied Aviation Studies JO - International Journal of Applied Aviation Studies Y1 - 2011///Sum 2011 VL - 11 IS - 1 SP - 1 EP - 12 CY - US PB - Federal Aviation Administration (FAA) Academy SN - 1546-3214 AD - Crow, Brent, 1402 E. Pryor Rd., San Tan Valley, AZ, US, 85140 N1 - Accession Number: 2012-32197-001. Partial author list: First Author & Affiliation: Crow, Brent; Arizona State University, Tempe, AZ, US. Release Date: 20130318. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aviation; Personnel Training; Role Playing. Minor Descriptor: Aerospace Personnel. Classification: Transportation (4090). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: Sum 2011. AB - Flight instructor training has remained largely unchanged since the beginning of aviation. The current method of training mostly involves the flight instructor trainee 'role-playing' as the instructor to their instructor who is 'role-playing' as the student. An analysis of the behaviors of flight instructor instrument trainees exhibited while teaching their peers (other classmates) indicates that the behaviors are different than those used when teaching an actual instrument student. This research suggests that the method in which flight instructors are trained produces behaviors that do not translate to real-world instruction, therefore potentially hindering the development of effective flight instructors. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - flight instructor training KW - aviation KW - role playing KW - 2011 KW - Aviation KW - Personnel Training KW - Role Playing KW - Aerospace Personnel KW - 2011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-32197-001&site=ehost-live&scope=site UR - crowpbj@yahoo.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-19188-001 AN - 2010-19188-001 AU - Gunzelmann, Glenn AU - Richard Moore, L. Jr. AU - Salvucci, Dario D. AU - Gluck, Kevin A. T1 - Sleep loss and driver performance: Quantitative predictions with zero free parameters. JF - Cognitive Systems Research JO - Cognitive Systems Research JA - Cogn Syst Res Y1 - 2011/06// VL - 12 IS - 2 SP - 154 EP - 163 CY - Netherlands PB - Elsevier Science SN - 2214-4366 SN - 1389-0417 AD - Gunzelmann, Glenn, Air Force Research Laboratory – RHAC, 6030 South Kent Street, Mesa, AZ, US, 85212-6061 N1 - Accession Number: 2010-19188-001. Partial author list: First Author & Affiliation: Gunzelmann, Glenn; Air Force Research Laboratory, AZ, US. Release Date: 20100920. Correction Date: 20160407. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Conference Information: International Conference on Cognitive Modeling, 9th, Manchester, United Kingdom. Conference Note: Portions of this research were presented at the aforementioned conference. Major Descriptor: Driving Behavior; Fatigue; Sleep Deprivation; Sustained Attention. Classification: Intelligent Systems (4100); Transportation (4090). Population: Human (10). Methodology: Mathematical Model. References Available: Y. Page Count: 10. Issue Publication Date: Jun, 2011. Publication History: First Posted Date: Aug 22, 2010. AB - Fatigue has been implicated in an alarming number of motor vehicle accidents, costing billions of dollars and thousands of lives. Unfortunately, the ability to predict performance impairments in complex task domains like driving is limited by a gap in our understanding of the explanatory mechanisms. In this paper, we describe an attempt to generate a priori predictions of degradations in driver performance due to sleep deprivation. We accomplish this by integrating an existing account of the effects of sleep loss and circadian rhythms on sustained attention performance with a validated model of driver behavior. The predicted results account for published qualitative trends for driving across multiple days of restricted sleep and total sleep deprivation. The quantitative results show that the model’s performance is worse at baseline and degrades less severely than human driving, and expose some critical areas for future research. Overall, the results illustrate the potential value of model reuse and integration for improving our understanding of important psychological phenomena and for making useful predictions of performance in applied, naturalistic task contexts. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - sleep loss KW - driver performance KW - fatigue KW - driver behavior KW - computational model KW - sustained attention KW - 2011 KW - Driving Behavior KW - Fatigue KW - Sleep Deprivation KW - Sustained Attention KW - 2011 U1 - Sponsor: Air Force Research Laboratory, Warfighter Readiness Research Division, US. Recipients: No recipient indicated U1 - Sponsor: Air Force Office of Scientific Research, US. Grant: 07HE01COR. Recipients: No recipient indicated U1 - Sponsor: Office of Naval Research, US. Grant: N00014-09-1-0096. Recipients: No recipient indicated DO - 10.1016/j.cogsys.2010.07.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-19188-001&site=ehost-live&scope=site UR - glenn.gunzelmann@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-13531-001 AN - 2011-13531-001 AU - McClernon, Christopher K. AU - McCauley, Michael E. AU - O'Connor, Paul E. AU - Warm, Joel S. T1 - Stress training improves performance during a stressful flight. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2011/06// VL - 53 IS - 3 SP - 207 EP - 218 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - McClernon, Christopher K., Air Force Research Laboratory, Wright-Patterson Air Force Base, Building 33, 2255 H St., OH, US, 45433 N1 - Accession Number: 2011-13531-001. PMID: 21830508 Partial author list: First Author & Affiliation: McClernon, Christopher K.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20111114. Correction Date: 20170213. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Performance; Stress; Training. Minor Descriptor: Aircraft; Coping Behavior; Simulation. Classification: Transportation (4090). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Subjective Stress Scale. Methodology: Empirical Study; Quantitative Study; Scientific Simulation. References Available: Y. Page Count: 12. Issue Publication Date: Jun, 2011. Publication History: Accepted Date: Feb 19, 2011; First Submitted Date: Mar 28, 2010. AB - Objective: This study investigated whether stress training introduced during the acquisition of simulator-based flight skills enhances pilot performance during subsequent stressful flight operations in an actual aircraft. Background: Despite knowledge that preconditions to aircraft accidents can be strongly influenced by pilot stress, little is known about the effectiveness of stress training and how it transfers to operational flight settings. Method: For this study, 30 participants with no flying experience were assigned at random to a stress-trained treatment group or a control group. Stress training consisted of systematic pairing of skill acquisition in a flight simulator with stress coping mechanisms in the presence of a cold pressor. Control participants received identical flight skill acquisition training but without stress training. Participants then performed a stressful flying task in a Piper Archer aircraft. Results: Stress-trained research participants flew the aircraft more smoothly, as recorded by aircraft telemetry data, and generally better, as recorded by flight instructor evaluations, than did control participants. Conclusions: Introducing stress coping mechanisms during flight training improved performance in a stressful flying task. Application: The results of this study indicate that stress training during the acquisition of flight skills may serve to enhance pilot performance in stressful operational flight and, therefore, might mitigate the contribution of pilot stress to aircraft mishaps. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - stress training KW - pilot performance KW - flight skills KW - aircraft KW - coping KW - simulation KW - 2011 KW - Aircraft Pilots KW - Performance KW - Stress KW - Training KW - Aircraft KW - Coping Behavior KW - Simulation KW - 2011 U1 - Sponsor: US Air Force Air Education and Training Command, US. Recipients: No recipient indicated U1 - Sponsor: Office of Naval Research. Recipients: No recipient indicated U1 - Sponsor: US Air Force Academy, Department of Behavioral Sciences and Leadership, US. Recipients: No recipient indicated DO - 10.1177/0018720811405317 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-13531-001&site=ehost-live&scope=site UR - christopher.mcclernon@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-13531-002 AN - 2011-13531-002 AU - Lyons, Joseph B. AU - Stokes, Charlene K. AU - Eschleman, Kevin J. AU - Alarcon, Gene M. AU - Barelka, Alex J. T1 - Trustworthiness and it suspicion: An evaluation of the nomological network. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2011/06// VL - 53 IS - 3 SP - 219 EP - 229 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Lyons, Joseph B., Air Force Research Laboratory, 2698 G St., Bldg. 190, Wright-Patterson Air Force Base, OH, US, 45433-7604 N1 - Accession Number: 2011-13531-002. PMID: 21830509 Partial author list: First Author & Affiliation: Lyons, Joseph B.; Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20111114. Correction Date: 20120827. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Automation; Factor Structure; Information Technology; Suspicion; Trust (Social Behavior). Minor Descriptor: Decision Making. Classification: Human Factors Engineering (4010). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360); Aged (65 yrs & older) (380). Tests & Measures: Trust in Automation Scale; IT Suspicion Scale; Generalized Communications Suspicion Scale; Decision Confidence Scale DOI: 10.1037/t07975-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 11. Issue Publication Date: Jun, 2011. Publication History: Accepted Date: Feb 22, 2011; First Submitted Date: Oct 19, 2010. AB - Objective: The authors evaluated the validity of trust in automation and information technology (IT) suspicion by examining their factor structure and relationship with decision confidence. Background: Research on trust has burgeoned, yet the dimensionality of trust remains elusive. Researchers suggest that trust is a unidimensional construct, whereas others believe it is multidimensional. Additionally, novel constructs, such as IT suspicion, have yet to be distinguished from trust in automation. Research is needed to examine the overlap between these constructs and to determine the dimensionality of trust in automation. Method: Participants (N = 72) engaged in a computer-based convoy scenario involving an automated decision aid. The aid fused real-time sensor data and provided route recommendations to participants who selected a route based on (a) a map with historical enemy information, (b) sensor inputs, and (c) automation suggestions. Measures for trust in automation and IT suspicion were administered after individuals interacted with the automation. Results: Results indicated three orthogonal factors: trust, distrust, and IT suspicion. Each variable was explored as a predictor of decision confidence. Distrust and trust evidenced unique influences on decision confidence, albeit at different times. Higher distrust related to less confidence, whereas trust related to greater confidence. Conclusion: The current study found that trust in automation was best characterized by two orthogonal dimensions (trust and distrust). Both trust and distrust were found to be independent from IT suspicion, and both distrust and trust uniquely predicted decision confidence. Application: Researchers may consider using separate measures for trust and distrust in future studies. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - decision confidence KW - information technology suspicion KW - factor structure KW - trustworthiness KW - automation KW - 2011 KW - Automation KW - Factor Structure KW - Information Technology KW - Suspicion KW - Trust (Social Behavior) KW - Decision Making KW - 2011 DO - 10.1177/0018720811406726 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-13531-002&site=ehost-live&scope=site UR - Joseph.lyons@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-14803-001 AN - 2011-14803-001 AU - Rutkowski, Adam J. AU - Miller, Mikel M. AU - Quinn, Roger D. AU - Willis, Mark A. T1 - Egomotion estimation with optic flow and air velocity sensors. JF - Biological Cybernetics JO - Biological Cybernetics JA - Biol Cybern Y1 - 2011/06// VL - 104 IS - 6 SP - 351 EP - 367 CY - Germany PB - Springer SN - 0340-1200 SN - 1432-0770 AD - Rutkowski, Adam J., Air Force Research Laboratory/RW, Eglin AFB, FL, US, 32542 N1 - Accession Number: 2011-14803-001. PMID: 21728014 Partial author list: First Author & Affiliation: Rutkowski, Adam J.; Air Force Research Laboratory/RW, Eglin AFB, FL, US. Release Date: 20110905. Correction Date: 20120618. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Rutkowski, Adam J. Major Descriptor: Velocity. Minor Descriptor: Algorithms; Estimation. Classification: Statistics & Mathematics (2240). Population: Human (10). Methodology: Mathematical Model. References Available: Y. Page Count: 17. Issue Publication Date: Jun, 2011. Publication History: First Posted Date: Jul 5, 2011; Accepted Date: May 30, 2011; First Submitted Date: Apr 9, 2010. Copyright Statement: Springer Verlag (Outside the USA). 2011. AB - We develop a method that allows a flyer to estimate its own motion (egomotion), the wind velocity, ground slope, and flight height using only inputs from onboard optic flow and air velocity sensors. Our artificial algorithm demonstrates how it could be possible for flying insects to determine their absolute egomotion using their available sensors, namely their eyes and wind sensitive hairs and antennae. Although many behaviors can be performed by only knowing the direction of travel, behavioral experiments indicate that odor tracking insects are able to estimate the wind direction and control their absolute egomotion (i.e., groundspeed). The egomotion estimation method that we have developed, which we call the opto-aeronautic algorithm, is tested in a variety of wind and ground slope conditions using a video recorded flight of a moth tracking a pheromone plume. Over all test cases that we examined, the algorithm achieved a mean absolute error in height of 7% or less. Furthermore, our algorithm is suitable for the navigation of aerial vehicles in environments where signals from the Global Positioning System are unavailable. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - egomotion estimation KW - optic flow KW - air velocity sensors KW - 2011 KW - Velocity KW - Algorithms KW - Estimation KW - 2011 U1 - Sponsor: Ohio Space Grant Consortium. Recipients: Rutkowski, Adam J. U1 - Sponsor: National Research Council. Recipients: Rutkowski, Adam J. DO - 10.1007/s00422-011-0440-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-14803-001&site=ehost-live&scope=site UR - adam.rutkowski@eglin.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-18061-019 AN - 2011-18061-019 AU - Estis, Julie M. AU - Parisi, Julie A. AU - Moore, Robert E. AU - Brungart, Douglas S. T1 - Speech intelligibility differences across sound classes with in-the-ear and free-field microphones in quiet. JF - Perceptual and Motor Skills JO - Perceptual and Motor Skills JA - Percept Mot Skills Y1 - 2011/06// VL - 112 IS - 3 SP - 845 EP - 859 CY - US PB - Perceptual & Motor Skills SN - 0031-5125 SN - 1558-688X AD - Estis, Julie M., Department of Speech Pathology and Audiologv, College of Allied Health Professions, University of South Alabama, HAHN 1119, Mobile, AL, US, 36688-0002 N1 - Accession Number: 2011-18061-019. PMID: 21853774 Other Journal Title: Perceptual & Motor Skills Research Exchange. Partial author list: First Author & Affiliation: Estis, Julie M.; Department of Speech Pathology and Audiologv, University of South Alabama, Mobile, AL, US. Other Publishers: Sage Publications. Release Date: 20110912. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Speech Perception. Minor Descriptor: Phonemes. Classification: Auditory & Speech Perception (2326). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: Modified Rhyme Test. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 15. Issue Publication Date: Jun, 2011. Publication History: Accepted Date: May 13, 2011. Copyright Statement: Perceptual and Motor Skills. 2011. AB - Speech intelligibility performance with an in-the-ear microphone embedded in a custom-molded deep-insertion earplug was compared with results obtained using a free-field microphone. Intelligibility differences between microphones were further analyzed to assess whether reduced intelligibility was specific to certain sound classes. 36 participants completed the Modified Rhyme Test using recordings made with each microphone. While speech intelligibility for both microphones was highly accurate, intelligibility with the free-field microphone was significantly better than with the in-the-ear microphone. There were significant effects of place and manner of sound production. Significant differences in recognition among specific phonemes were also revealed. Implications included modifying the in-the-ear microphone to transmit more high frequency energy. Use of the in-the-ear microphone was limited by significant loss of high-frequency energy of the speech signal which resulted in reduced intelligibility for some sounds; however, the in-the-ear microphone is a promising technology for effective communication in military environments. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - speech intelligibility KW - microphones KW - phoneme recognition KW - 2011 KW - Speech Perception KW - Phonemes KW - 2011 DO - 10.2466/24.28.PMS.112.3.845-859 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-18061-019&site=ehost-live&scope=site UR - jestis@usouthal.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Martinez, Michael A. AU - Newman, Alexandra M. T1 - A solution approach for optimizing long- and short-term production scheduling at LKAB’s Kiruna mine JO - European Journal of Operational Research JF - European Journal of Operational Research Y1 - 2011/05/16/ VL - 211 IS - 1 M3 - Article SP - 184 EP - 197 SN - 03772217 AB - Abstract: We present a mixed-integer program to schedule long- and short-term production at LKAB’s Kiruna mine, an underground sublevel caving mine located in northern Sweden. The model minimizes deviations from monthly preplanned production quantities while adhering to operational constraints. Because of the mathematical structure of the model and its moderately large size, instances spanning a time horizon of more than a year or two tend to be intractable. We develop an optimization-based decomposition heuristic that, on average, obtains better solutions faster than solving the model directly. We show that for realistic data sets, we can generate solutions with deviations that comprise about 3–6% of total demand in about a third of an hour. [Copyright &y& Elsevier] AB - Copyright of European Journal of Operational Research is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRODUCTION scheduling KW - MATHEMATICAL optimization KW - METAL industry KW - INTEGER programming KW - DATA mining KW - STANDARD deviations KW - MATHEMATICAL models KW - Determining a production schedule KW - Determining optimal operating policies at an underground mine production/scheduling applications KW - Mining/metals industries KW - Production scheduling at an underground mine integer programming applications N1 - Accession Number: 57685132; Martinez, Michael A. 1; Email Address: michael.martinez@usafa.edu; Newman, Alexandra M. 2; Email Address: newman@mines.edu; Affiliations: 1: Department of Mathematical Sciences, United States Air Force Academy, USAF Academy, CO 80840, USA; 2: Division of Economics and Business, Colorado School of Mines, Golden, CO 80401, USA; Issue Info: May2011, Vol. 211 Issue 1, p184; Thesaurus Term: PRODUCTION scheduling; Thesaurus Term: MATHEMATICAL optimization; Thesaurus Term: METAL industry; Thesaurus Term: INTEGER programming; Thesaurus Term: DATA mining; Thesaurus Term: STANDARD deviations; Thesaurus Term: MATHEMATICAL models; Author-Supplied Keyword: Determining a production schedule; Author-Supplied Keyword: Determining optimal operating policies at an underground mine production/scheduling applications; Author-Supplied Keyword: Mining/metals industries; Author-Supplied Keyword: Production scheduling at an underground mine integer programming applications; NAICS/Industry Codes: 213114 Support Activities for Metal Mining; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 423510 Metal Service Centers and Other Metal Merchant Wholesalers; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.ejor.2010.12.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=57685132&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Erupe, M. E. AU - Viggiano, A. A. AU - Lee, S.-H. T1 - The effect of trimethylamine on atmospheric nucleation involving H2SO4. JO - Atmospheric Chemistry & Physics JF - Atmospheric Chemistry & Physics Y1 - 2011/05/15/ VL - 11 IS - 10 M3 - Article SP - 4767 EP - 4775 PB - Copernicus Gesellschaft mbH SN - 16807316 AB - Field observations and quantum chemical calculations have shown that organic amine compounds may be important for new particle formation involving H2SO4. Here, we report laboratory observations that investigate the effect of trimethylamine (TMA) on H2SO4-H2O nucleation made under aerosol precursor concentrations typically found in the lower troposphere ([H2SO4] of 106-107 cm-3; [TMA] of 180-1350 pptv). The threshold [H2SO4] needed to produce the unity J was from 106- 107 cm-3 and the slopes of Log J vs. Log [H2SO4] and Log J vs. Log [TMA] were 4-6 and I, respectively, strikingly similar to the case of ammonia (NH3) ternary nucleation (Benson et al., 2011). At lower RH, however, enhancement in J due to TMA was up to an order of magnitude greater than that due to NH3. These findings imply that both amines and NH3 are important nucleation species, but under dry atmospheric conditions, amines may have stronger effects on H2SO4 nucleation than NH3. Aerosol models should therefore take into account inorganic and organic base compounds together to fully understand the widespread new particle formation events in the lower troposphere. [ABSTRACT FROM AUTHOR] AB - Copyright of Atmospheric Chemistry & Physics is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Atmospheric nucleation KW - Amines KW - Sulfuric acid KW - Atmospheric aerosols KW - Ammonia KW - Particles KW - Troposphere KW - Organic compounds KW - Quantum chemistry N1 - Accession Number: 65164280; Erupe, M. E. 1; Viggiano, A. A. 2; Lee, S.-H. 1; Email Address: sleel9@kent.edu; Affiliations: 1: Kent State University, Department of Chemistry and Biochemistry, Kent, Ohio 44240, USA; 2: Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts, USA; Issue Info: 2011, Vol. 11 Issue 10, p4767; Thesaurus Term: Atmospheric nucleation; Thesaurus Term: Amines; Thesaurus Term: Sulfuric acid; Thesaurus Term: Atmospheric aerosols; Thesaurus Term: Ammonia; Thesaurus Term: Particles; Thesaurus Term: Troposphere; Thesaurus Term: Organic compounds; Subject Term: Quantum chemistry; NAICS/Industry Codes: 325311 Nitrogenous Fertilizer Manufacturing; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325612 Polish and Other Sanitation Good Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.5194/acp-11-4767-2011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=65164280&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Ramsuran, Veron AU - Kulkarni, Hemant AU - He, Weijing AU - Mlisana, Koleka AU - Wright, Edwina J. AU - Werner, Lise AU - Castiblanco, John AU - Dhanda, Rahul AU - Le, Tuan AU - Dolan, Matthew J. AU - Guan, Weihua AU - Weiss, Robin A. AU - Clark, Robert A. AU - Abdool Karim, Salim S. AU - Ahuja, Sunil K. AU - Ndung'u, Thumbi T1 - Duffy-Null–Associated Low Neutrophil Counts Influence HIV-1 Susceptibility in High-Risk South African Black Women. JO - Clinical Infectious Diseases JF - Clinical Infectious Diseases Y1 - 2011/05/15/ VL - 52 IS - 10 M3 - Article SP - 1248 EP - 1256 SN - 10584838 AB - The Duffy-null trait and ethnic neutropenia are highly prevalent in Africa. The authors found that the trait of Duffy-null–associated low neutrophil counts associated with increased HIV-1 susceptibility. The possible contribution of this trait to the high prevalence of HIV-1 in Africa requires further investigationBackground. The Duffy-null trait and ethnic netropenia are both highly prevalent in Africa. The influence of pre-seroconversion levels of peripheral blood cell counts (PBCs) on the risk of acquiring human immunodeficiency virus (HIV)–1 infection among Africans is unknown.Methods. The triangular relationship among pre-seroconversion PBC counts, host genotypes, and risk of HIV acquisition was determined in a prospective cohort of black South African high-risk female sex workers. Twenty-seven women had seroconversion during follow-up, and 115 remained HIV negative for 2 years, despite engaging in high-risk activity.Results. Pre-seroconversion neutrophil counts in women who subsequently had seroconversion were significantly lower, whereas platelet counts were higher, compared with those who remained HIV negative. Comprising 27% of the cohort, subjects with pre-seroconversion neutrophil counts of <2500 cells/mm3 had a ∼3-fold greater risk of acquiring HIV infection. In a genome-wide association analyses, an African-specific polymorphism (rs2814778) in the promoter of Duffy Antigen Receptor for Chemokines (DARC −46T > C) was significantly associated with neutrophil counts (P = 7.9 × 10−11). DARC −46C/C results in loss of DARC expression on erthyrocytes (Duffy-null) and resistance to Plasmodium vivax malaria, and in our cohort, only subjects with this genotype had pre-seroconversion neutrophil counts of <2500 cells/mm3. The risk of acquiring HIV infection was ∼3-fold greater in those with the trait of Duffy-null–associated low neutrophil counts, compared with all other study participants.Conclusions. Pre-seroconversion neutrophil and platelet counts influence risk of HIV infection. The trait of Duffy-null–associated low neutrophil counts influences HIV susceptibility. Because of the high prevalence of this trait among persons of African ancestry, it may contribute to the dynamics of the HIV epidemic in Africa. [ABSTRACT FROM AUTHOR] AB - Copyright of Clinical Infectious Diseases is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Disease prevalence KW - Blood cell count KW - HIV-positive persons KW - Black women KW - Genetic polymorphisms KW - South Africa N1 - Accession Number: 78118581; Ramsuran, Veron 1,2,3,4; Kulkarni, Hemant 3,4; He, Weijing 3,4; Mlisana, Koleka 2; Wright, Edwina J. 5; Werner, Lise 2; Castiblanco, John 3,4; Dhanda, Rahul 3,4; Le, Tuan 3,4; Dolan, Matthew J. 6; Guan, Weihua 7; Weiss, Robin A. 8; Clark, Robert A. 3,4; Abdool Karim, Salim S. 2; Ahuja, Sunil K. 3,4; Ndung'u, Thumbi 1,2; Affiliations: 1: HIV Pathogenesis Programme; 2: Centre for the AIDS Program of Research in South Africa (CAPRISA), Doris Duke Medical Research Institute, Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa; 3: Veterans Administration Research Center for AIDS and HIV-1 Infection, and Center for Personalized Medicine, South Texas Veterans Health Care System; 4: Department of Medicine, University of Texas Health Science Center, San Antonio; 5: The Alfred Hospital, Melbourne, Victoria, Australia, The Burnet Institute, Melbourne, Victoria, Australia, and Departments of Medicine, Nursing Health Sciences, Monash University, Clayton, Victoria Australia; 6: Henry M. Jackson Foundation, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas; 7: Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, Minnesota; 8: Medical Research Council Centre for Medical Molecular Virology, Division of Infection and Immunity, University College London, London, United Kingdom; Issue Info: May2011, Vol. 52 Issue 10, p1248; Thesaurus Term: Disease prevalence; Subject Term: Blood cell count; Subject Term: HIV-positive persons; Subject Term: Black women; Subject Term: Genetic polymorphisms; Subject: South Africa; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=78118581&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 104898227 T1 - Degree of microleakage of a self-etch sealant. AU - Conner, Frederick A. AU - Vandewalle, Kraig S. AU - Bartoloni, Joseph A. Y1 - 2011/05//May/Jun2011 N1 - Accession Number: 104898227. Language: English. Entry Date: 20110629. Revision Date: 20150711. Publication Type: Journal Article; pictorial; research; tables/charts. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Dental Care. NLM UID: 7610466. KW - Acid Etching, Dental KW - Treatment Failure KW - Human KW - Sample Size KW - Microscopy KW - Comparative Studies KW - Kruskal-Wallis Test KW - Mann-Whitney U Test KW - Statistical Significance SP - 224 EP - 228 JO - General Dentistry JF - General Dentistry JA - GEN DENT VL - 59 IS - 3 CY - Chicago, Illinois PB - Academy of General Dentistry AB - The purpose of this study was to compare the microleakage of a new self-etch sealant (Enamel Loc), with and without acid etching, to a traditional sealant (UltraSeal XT Plus) with acid etching in occlusal fissures. The self-etch sealant had significantly more microleakage than the traditional sealant or the self-etch sealant with acid-etching of the enamel. SN - 0363-6771 AD - Member, United States Air Force Dental Corps, RAF Menwith Hill AD - Director, Dental Research, 2-Year Advanced Education in General Dentistry, Lackland AFB, Texas AD - Clinical associate professor, Department of Restorative Dentistry, University of Texas Health Science Center, San Antonio, TX U2 - PMID: 21903546. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104898227&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Tawk, Y. AU - Costantine, J. AU - Avery, K. AU - Christodoulou, C. G. T1 - Implementation of a Cognitive Radio Front-End Using Rotatable Controlled Reconfigurable Antennas. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2011/05//05/01/2011 Y1 - 2011/05//05/01/2011 VL - 59 IS - 5 M3 - Article SP - 1773 EP - 1778 SN - 0018926X AB - This communication presents a new antenna system designed for cognitive radio applications. The antenna structure consists of a UWB antenna and a frequency reconfigurable antenna system. The UWB antenna scans the channel to discover “white space” frequency bands while tuning the reconfigurable section to communicate within these bands. The frequency agility is achieved via a rotational motion of the antenna patch. The rotation is controlled by a stepper motor mounted on the back of the antenna structure. The motor's rotational motion is controlled by LABVIEW on a computer connected to the motor through its parallel port. The computer's parallel port is connected to a NPN Darlington array that is used to drive the stepper motor. The antenna has been simulated with the driving motor being taken into consideration. A good agreement is found between the simulated and the measured antenna radiation properties. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRA-wideband antennas KW - SOFTWARE radio KW - COMMUNICATION & technology KW - RADIO frequency KW - DETECTORS KW - PARALLEL algorithms KW - SIMULATION methods & models N1 - Accession Number: 60386935; Source Information: 05/01/2011, Vol. 59 Issue 5, p1773; Subject Term: ULTRA-wideband antennas; Subject Term: SOFTWARE radio; Subject Term: COMMUNICATION & technology; Subject Term: RADIO frequency; Subject Term: DETECTORS; Subject Term: PARALLEL algorithms; Subject Term: SIMULATION methods & models; Subject Term: ; Number of Pages: 5p; ; Document Type: Article; L3 - 10.1109/TAP.2011.2122239 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=60386935&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Chen, Fuyu AU - Su, Weifeng AU - Batalama, Stella AU - Matyjas, John D. T1 - Joint Power Optimization for Multi-Source Multi-Destination Relay Networks. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing J1 - IEEE Transactions on Signal Processing PY - 2011/05//05/01/2011 Y1 - 2011/05//05/01/2011 VL - 59 IS - 5 M3 - Article SP - 2370 EP - 2381 SN - 1053587X AB - In this paper, low-complexity joint power assignment algorithms are developed for multi-source multi-destination relay networks where multiple sources share a common relay that forwards all received signals simultaneously to destinations. In particular, we consider the following power optimization strategies: (i) Minimization of the total transmission power of the sources and the relay under the constraint that the signal-to-interference-plus-noise ratio (SINR) requirement of each source-destination pair is satisfied, and (ii) Maximization of the minimum SINR among all source-destination pairs subject to any given total power budget. Both optimization problems involve K power variables, where K is the number of source-destination pairs in the network, and an exhaustive search is prohibitive for large K. In this work, we develop a methodology that allows us to obtain an asymptotically tight approximation of the SINR and reformulate the original optimization problems to single-variable optimization problems, which can be easily solved by numerical search of the single variable. Then, the corresponding optimal transmission power at each source and relay can be calculated directly. The proposed optimization schemes are scalable and lead to power assignment algorithms that exhibit the same optimization complexity for any number (K) of source-destination pairs in the network. Moreover, we apply the methodology that we developed to solve a related max-min SINR based optimization problem in which we determine power assignment for the sources and the relay to maximize the minimum SINR among all source-destination pairs subject to any given total power budget. Extensive numerical studies illustrate and validate our theoretical developments. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTATIONAL complexity KW - COMPUTER networks KW - ALGORITHMS KW - CONSTRAINT satisfaction (Artificial intelligence) KW - SIGNAL-to-noise ratio KW - APPROXIMATION theory KW - ASYMPTOTIC expansions KW - MATHEMATICAL optimization N1 - Accession Number: 59954194; Source Information: 05/01/2011, Vol. 59 Issue 5, p2370; Subject Term: COMPUTATIONAL complexity; Subject Term: COMPUTER networks; Subject Term: ALGORITHMS; Subject Term: CONSTRAINT satisfaction (Artificial intelligence); Subject Term: SIGNAL-to-noise ratio; Subject Term: APPROXIMATION theory; Subject Term: ASYMPTOTIC expansions; Subject Term: MATHEMATICAL optimization; Subject Term: ; Number of Pages: 12p; ; Document Type: Article; L3 - 10.1109/TSP.2011.2109958 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=59954194&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Riley, Matthew E. AU - Grandhi, Ramana V. AU - Kolonay, Raymond T1 - Quantification of Modeling Uncertainty in Aeroelastic Analyses. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2011/05//May/Jun2011 Y1 - 2011/05//May/Jun2011 VL - 48 IS - 3 M3 - Article SP - 866 EP - 873 SN - 00218669 AB - Traditional uncertainty quantification techniques in engineering analysis concentrate on the quantification of parametric uncertainties: inherent natural variations of the input variables. In problems with complex or newer modeling methodologies, the variabilities induced by the modeling process itself (known as model-form and predictive uncertainties) can become a significant source of uncertainty to the problem. This work demonstrates two model-form uncertainty quantification methods on an unsteady aeroelastic problem: Bayesian model averaging and the adjustment factors approach. While the Bayesian model averaging approach is more robust and has been shown to more completely quantify the total uncertainty, it also requires the presence of experimental data, which are not always readily available in preliminary design. As such, this work introduces an uncertainty quantification methodology for use in aeroelastic analysis that uses the modeling uncertainty to drive the necessity of further experimental data points. Within this methodology, the modified adjustment factors approach has been developed to calculate the sensitivity of the adjusted models to the model probability assumptions being input into the work, facilitating the flow of the design methodology. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - VARIABLES (Mathematics) KW - BAYESIAN analysis KW - ENGINEERING KW - MATHEMATICAL models N1 - Accession Number: 63174852; Source Information: May/Jun2011, Vol. 48 Issue 3, p866; Subject Term: AEROELASTICITY; Subject Term: VARIABLES (Mathematics); Subject Term: BAYESIAN analysis; Subject Term: ENGINEERING; Subject Term: MATHEMATICAL models; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.2514/1.C031059 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=63174852&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Sherer, Scott E. AU - Visbal, Miguel R. AU - Gordnier, Raymond E. AU - Yilmaz, Turgut O. AU - Rockwell, Donald O. T1 - 1303 Unmanned Combat Air Vehicle Flowfield Simulations and Comparison with Experimental Data. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2011/05//May/Jun2011 Y1 - 2011/05//May/Jun2011 VL - 48 IS - 3 M3 - Article SP - 1005 EP - 1019 SN - 00218669 AB - In this work, high-order computations of the flowfield around a 1303 unmanned combat air vehicle configuration are performed and compared with recently collected experimental data obtained at Lehigh University. The computational approach used a high-order overset-grid flow solver developed in the Air Vehicles Directorate of the U.S. Air Force Research Laboratory that employs up-to-sixth-order compact finite differences and high-order, low-pass numerical filters to accurately resolve detailed flow features in a robust manner. The experimental data was collected via a particle image velocimetry technique in a free-surface water channel. Both quantitative and qualitative comparisons between computational and experimental results are done at a plane located at eight-tenths of the half-span for various Reynolds numbers and angles of attack, with the results comparing quite favorably for most flow conditions. Computational images of the flowfield are used to elucidate angle of attack and Reynolds number effects on this configuration, as well as to investigate the formation and evolution of the leading-edge and centerbody vortical structures and the impact that angle of attack has on their formation mechanisms. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DRONE aircraft KW - ARMORED military vehicles KW - AIR flow KW - REYNOLDS number KW - UNITED States N1 - Accession Number: 63174865; Source Information: May/Jun2011, Vol. 48 Issue 3, p1005; Subject Term: DRONE aircraft; Subject Term: ARMORED military vehicles; Subject Term: AIR flow; Subject Term: REYNOLDS number; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 15p; ; Document Type: Article; L3 - 10.2514/1.C031195 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=63174865&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 104891762 T1 - Pathophysiologic changes due to TASER((R)) devices versus excited delirium: Potential relevance to deaths-in-custody? AU - Jauchem JR Y1 - 2011/05// N1 - Accession Number: 104891762. Language: English. Entry Date: 20111014. Revision Date: 20150711. Publication Type: Journal Article; review. Journal Subset: Biomedical; Europe; UK & Ireland. NLM UID: 101300022. KW - Delirium -- Physiopathology KW - Electric Stimulation -- Equipment and Supplies KW - Acidosis -- Physiopathology KW - Blood Glucose -- Analysis KW - Body Temperature Regulation KW - Catecholamines -- Blood KW - Creatine Kinase -- Metabolism KW - Electric Injuries -- Physiopathology KW - Electrocardiography KW - Fever -- Physiopathology KW - Forensic Medicine KW - Heart Rate -- Physiology KW - Hematocrit KW - Hyperglycemia -- Physiopathology KW - Hyperkalemia -- Physiopathology KW - Lactic Acid -- Blood KW - Pathologic Processes KW - Prisoners KW - Respiration KW - Rhabdomyolysis -- Physiopathology KW - Social Control KW - Substance Use Disorders -- Physiopathology KW - Ventricular Fibrillation -- Physiopathology SP - 145 EP - 153 JO - Journal of Forensic & Legal Medicine JF - Journal of Forensic & Legal Medicine JA - J FORENSIC LEGAL MED VL - 18 IS - 4 CY - New York, New York PB - Elsevier Science SN - 1752-928X AD - U.S. Air Force Research Laboratory, 711th Human Performance Wing, Human Effectiveness Directorate, Directed Energy Bioeffects Division, 8262 Hawks Road, Brooks City-Base, Texas 78235, USA. U2 - PMID: 21550562. DO - 10.1016/j.jflm.2011.01.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104891762&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Student Burnout and Engagement: A Test of the Conservation of Resources Theory. AU - Alarcon, Gene M. AU - Edwards, Jean M. AU - Menke, Lauren E. JO - Journal of Psychology JF - Journal of Psychology Y1 - 2011/05// VL - 145 IS - 3 SP - 211 EP - 227 SN - 00223980 N1 - Accession Number: 59755079; Author: Alarcon, Gene M.: 1 Author: Edwards, Jean M.: 2 Author: Menke, Lauren E.: 2 ; Author Affiliation: 1 Air Force Research Laboratory,: 2 Wright State University,; No. of Pages: 17; Language: English; Publication Type: Article; Update Code: 20110404 N2 - The current study explored predictors of burnout and engagement in 1st-year college students. The theory of conservation of resources was used to create a path model for burnout and engagement. Specifically, the theory suggests that perceptions of demands mediate the relationship between resources and coping strategies. In turn, coping mediates the relationship of demands on the outcomes of burnout and engagement. Results indicate demands partially mediated the relationship between resources and coping strategies. Similarly, coping partially mediated the relationship between demands and burnout and engagement. Results suggest that teaching students adaptive ways of coping and extinguishing maladaptive ways of coping with the academic environment can increase engagement and decrease burnout. Implications for research, theory, and practice are discussed. ABSTRACT FROM AUTHOR KW - *COLLEGE students -- Psychology KW - *BURNOUT (Psychology) KW - ADJUSTMENT (Psychology) KW - ENGAGEMENT (Philosophy) KW - CONSERVATION of natural resources KW - PATH analysis (Statistics) KW - DEMAND (Economic theory) KW - burnout KW - college students KW - coping KW - engagement UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=59755079&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Reising, Monica AU - Morris, Max AU - Vardeman, Stephen AU - Higbee, Shawn T1 - Modeling Spectral-Temporal Data From Point Source Events. JO - Technometrics JF - Technometrics Y1 - 2011/05// VL - 53 IS - 2 M3 - Article SP - 183 EP - 195 SN - 00401706 AB - In recent years, a great deal of effort has been invested in developing sensors to detect, locate, and identify 'energetic' electromagnetic events. When observed through one type of imaging spectrometer, these events produce a data record that contains complete spectral and temporal information over the event's evolution. This article describes the development of a statistical model for the data produced by a particular spectral-temporal sensor. While the application is unique in some ways, this approach to model building may be useful in other related contexts. Several plots, estimated parameters, and some additional details for an equation are provided in the Appendix which is available as supplementary material online. [ABSTRACT FROM AUTHOR] AB - Copyright of Technometrics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - INFRARED array detectors KW - IMAGING systems -- Software KW - IMAGE converters KW - DETECTORS KW - SPECTROMETERS KW - OPTICAL engineering KW - Event discrimination KW - Infrared KW - Product correlation KW - Pseudo-imaging KW - Spectral imager N1 - Accession Number: 60118136; Reising, Monica 1; Morris, Max 1; Vardeman, Stephen 1; Higbee, Shawn 2; Affiliations: 1: Department of Statistics Iowa State University Ames, IA 50011; 2: Air Force Research Laboratory Sensors Directorate Hanscom AFB Bedford, MA 01731; Issue Info: May2011, Vol. 53 Issue 2, p183; Thesaurus Term: RESEARCH; Subject Term: INFRARED array detectors; Subject Term: IMAGING systems -- Software; Subject Term: IMAGE converters; Subject Term: DETECTORS; Subject Term: SPECTROMETERS; Subject Term: OPTICAL engineering; Author-Supplied Keyword: Event discrimination; Author-Supplied Keyword: Infrared; Author-Supplied Keyword: Product correlation; Author-Supplied Keyword: Pseudo-imaging; Author-Supplied Keyword: Spectral imager; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1198/TECH.2011.09014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=60118136&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 2011-11713-008 AN - 2011-11713-008 AU - Martin, John A. AU - Combs, James G. T1 - Better sooner than later: What triggers early CEO dismissal. JF - The Academy of Management Perspectives JO - The Academy of Management Perspectives Y1 - 2011/05// VL - 25 IS - 2 SP - 82 EP - 83 CY - US PB - Academy of Management SN - 1558-9080 SN - 1943-4529 N1 - Accession Number: 2011-11713-008. Other Journal Title: Academy of Management Executive; Executive. Partial author list: First Author & Affiliation: Martin, John A.; United States Air Force Academy, US. Release Date: 20111212. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Comment/Reply. Language: English. Major Descriptor: Job Performance; Management Personnel; Personnel Termination. Classification: Management & Management Training (3640). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Page Count: 2. Issue Publication Date: May, 2011. Copyright Statement: All rights reserved. The Academy of Management AB - Comments on an article Can CEO dismissals be proactive? by M. Ertugrul and K. Krishnan (2011). Ertugrul and Krishnan gathered data on 612 chief executive officer (CEO) dismissals between 1996 and 2008 separated into two groups those fired late and those fired early. Ertugrul and Krishnan considered several reasons why boards might dismiss a still-successful CEO. The board might view the CEO as having low ability and act proactively through dismissal. Unethical actions, such as insider trading or accounting irregularities, provide a second explanation. A third reason could be that astute institutional investors push for change when they see problems coming. Finally, early dismissal might result simply from a personality clash or difference of opinion about strategy. Ertugrul and Krishnan's goal was to uncover which of these reasons seemed to account for early CEO dismissals. Ertugrul and Krishnan examined board attributes to determine what types of boards were acting so quickly and looked at several attributes, such as board size and the number of independent directors. Ertugrul and Krishnan suggested that board incentives prompt early dismissal because they provide board members with a powerful motivation to act on their inside knowledge and remove low-ability CEOs and many boards fire CEOs before their performance shows up in financial performance metrics. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - chief executive officers KW - CEO dismissals KW - job performance KW - 2011 KW - Job Performance KW - Management Personnel KW - Personnel Termination KW - 2011 DO - 10.5465/AMP.2011.61020807 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-11713-008&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-11713-009 AN - 2011-11713-009 AU - Martin, John A. AU - Combs, James G. T1 - Does it take a village to raise a whistleblower? JF - The Academy of Management Perspectives JO - The Academy of Management Perspectives Y1 - 2011/05// VL - 25 IS - 2 SP - 83 EP - 85 CY - US PB - Academy of Management SN - 1558-9080 SN - 1943-4529 N1 - Accession Number: 2011-11713-009. Other Journal Title: Academy of Management Executive; Executive. Partial author list: First Author & Affiliation: Martin, John A.; United States Air Force Academy, US. Release Date: 20111212. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Comment/Reply. Language: English. Major Descriptor: Business Management; Fraud; Informants. Minor Descriptor: Credibility; Incentives; Motivation. Classification: Industrial & Organizational Psychology (3600); Crime Prevention (4270). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Page Count: 3. Issue Publication Date: May, 2011. Copyright Statement: All rights reserved. The Academy of Management AB - Comments on an article Who blows the whistle on corporate fraud? by A. Dyck et al. (2010). Dyck et al. set out to find which of the groups among investors, auditors, financial analysts, employees, media and industry regulators are most likely to become whistleblowers. Dyck and his colleagues examined more than 2,100 class-action lawsuits to identify 216 cases of alleged corporate fraud involving top managers that occurred between 1996 and 2004. Dyck and colleagues then tuned to the question of what motivates different people to come forward and expose management fraud and identified two broad factors: incentives and access to information. Often the people with incentive to expose fraud lack the information needed to do so. Stockholders, law firms and short sellers all have the incentive to expose fraud, but not the necessary information especially since corrupt managers typically want to hide their actions. The authors found that stock analysts who did report management fraud tended to be all-stars whose positions were secure and who had reputations for credibility. Indeed, top analysts may actually benefit from reporting fraud whistle blowing stock analysts seemed to be promoted more and were less likely to be demoted than others. and raises questions about how firms can be better managed both to prevent fraud and to quickly shed light on it if it does occur. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - corporate fraud KW - crime reporting KW - whistleblowers KW - incentives KW - motivation KW - credibility KW - 2011 KW - Business Management KW - Fraud KW - Informants KW - Credibility KW - Incentives KW - Motivation KW - 2011 DO - 10.5465/AMP.2011.61020808 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-11713-009&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-07561-004 AN - 2011-07561-004 AU - Ono, Masakatsu AU - Sachau, Daniel A. AU - Deal, William P. AU - Englert, David R. AU - Taylor, Michael D. T1 - Cognitive ability, emotional intelligence, and the big five personality dimensions as predictors of criminal investigator performance. JF - Criminal Justice and Behavior JO - Criminal Justice and Behavior JA - Crim Justice Behav Y1 - 2011/05// VL - 38 IS - 5 SP - 471 EP - 491 CY - US PB - Sage Publications SN - 0093-8548 SN - 1552-3594 AD - Ono, Masakatsu, School of Behavioral & Organizational Sciences, Claremont Graduate University, 123 E. 8th Street, Claremont, CA, US, 91711 N1 - Accession Number: 2011-07561-004. Partial author list: First Author & Affiliation: Ono, Masakatsu; Minnesota State University, MN, US. Release Date: 20110822. Correction Date: 20160616. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Ability; Emotional Intelligence; Job Performance; Law Enforcement Personnel; Personnel Training. Minor Descriptor: Criminal Behavior; Criminals. Classification: Police & Legal Personnel (4290). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: International Personality Item Pool; Agent Trainee Performance Report; NEO Personality Inventory-Revised; Shipley Institute of Living Scale DOI: 10.1037/t07774-000; Minnesota Multiphasic Personality Inventory-2 DOI: 10.1037/t15120-000; Inwald Personality Inventory; NEO Personality Inventory DOI: 10.1037/t07564-000; Mayer-Salovey-Caruso Emotional Intelligence Test DOI: 10.1037/t05047-000; Emotional Quotient Inventory: Short DOI: 10.1037/t04978-000. Methodology: Empirical Study; Interview; Quantitative Study. References Available: Y. Page Count: 21. Issue Publication Date: May, 2011. Copyright Statement: International Association for Correctional and Forensic Psychology. 2011. AB - This study examines the extent to which cognitive ability, the Big Five factor personality dimensions, and emotional intelligence are related to training and job performance of U.S. federal criminal investigators. Training performance measures were collected during a 17-week training program. Job performance measures were collected 1 year after the investigators completed the training program. Conscientiousness was modestly related to training performance. Cognitive ability and emotional intelligence were positively correlated with job performance. Neuroticism was negatively correlated with job performance. The relative benefits of using emotional intelligence and the five-factor model to select law enforcement agents are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cognitive ability KW - emotional intelligence KW - big five personality KW - criminal investigators KW - training KW - job performance KW - 2011 KW - Cognitive Ability KW - Emotional Intelligence KW - Job Performance KW - Law Enforcement Personnel KW - Personnel Training KW - Criminal Behavior KW - Criminals KW - 2011 DO - 10.1177/0093854811399406 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-07561-004&site=ehost-live&scope=site UR - masakatsu.ono@cgu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-09689-013 AN - 2011-09689-013 AU - Chen, Zhe AU - Tsou, Brian H. T1 - Task-based working memory guidance of visual attention. JF - Attention, Perception, & Psychophysics JO - Attention, Perception, & Psychophysics JA - Atten Percept Psychophys Y1 - 2011/05// VL - 73 IS - 4 SP - 1082 EP - 1095 CY - Germany PB - Springer SN - 1943-3921 SN - 1943-393X AD - Chen, Zhe, Department of Psychology, University of Canterbury, Private Bag 4800, Christchurch, New Zealand N1 - Accession Number: 2011-09689-013. PMID: 21264740 Other Journal Title: Perception & Psychophysics. Partial author list: First Author & Affiliation: Chen, Zhe; Department of Psychology, University of Canterbury, Christchurch, New Zealand. Other Publishers: Psychonomic Society. Release Date: 20110704. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Visual Perception; Visual Search; Visual Attention. Minor Descriptor: Short Term Memory. Classification: Visual Perception (2323). Population: Human (10). Location: New Zealand. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 14. Issue Publication Date: May, 2011. Publication History: First Posted Date: Jan 20, 2011. Copyright Statement: Psychonomic Society, Inc. 2011. AB - Previous research has established that holding a stimulus in working memory (WM) facilitates the deployment of visual attention to that stimulus relative to other stimuli. The present study examined whether maintaining a specific task in WM would also bias the allocation of attention to the stimuli associated with that task. Participants performed a speeded letter search task while simultaneously keeping in WM one of two task cues shown at the beginning of each trial. The results showed that task-based WM guidance of attention was modulated by response latencies. Whereas the participants with fast reaction times showed little influence of WM contents, the participants with slow reaction times took longer to respond when the letter target appeared in a distractor stimulus consistent with the task cue held in mind. A subsequent Stroop experiment found a larger Stroop interference effect from the participants in the slow group compared with those in the fast group, suggesting that the differential WM effect between the two groups may be associated with an individual’s ability to inhibit task-irrelevant information. Taken together, these results expanded the realm of previous research and provided further evidence for a close link between attention and WM. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - visual attention KW - distractor inhibition KW - visual search KW - working memory KW - visual perception KW - 2011 KW - Visual Perception KW - Visual Search KW - Visual Attention KW - Short Term Memory KW - 2011 DO - 10.3758/s13414-010-0087-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-09689-013&site=ehost-live&scope=site UR - zhe.chen@canterbury.ac.nz DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Pickett, Brent M. AU - Burnette, Parren F. AU - Wells, Steven P. AU - Sullivan, Patrick D. AU - Hawk, John R. T1 - Fire safety tests comparing synthetic jet and diesel fuels with JP-8 JO - Fire Safety Journal JF - Fire Safety Journal Y1 - 2011/04// VL - 46 IS - 3 M3 - Article SP - 89 EP - 95 SN - 03797112 AB - Abstract: Experimental fire tests have been performed on various fuels derived both from a petroleum source and from a synthetic source via a Fischer–Tropsch process. Multiple fire tests were performed for each fuel type as well as fuel blends of conventional and synthetic fuels using aqueous film-forming foam on a liquid pool fire following a prescribed military specification, MIL-F-24385F. Using the current U.S. Air Force jet fuel (JP-8) as a baseline comparison, the synthetic fuels or blends showed no significant difference in extinguishment times. Burnback times showed larger values for some of the synthetic fuels or blends when compared to JP-8, indicating improved safety for these synthetic fuels or blends. [Copyright &y& Elsevier] AB - Copyright of Fire Safety Journal is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Fire prevention KW - Synthetic fuels KW - FUEL KW - Diesel fuels KW - Kerosene KW - Petroleum KW - Comparative studies KW - Jet planes KW - Fire testing KW - Fire extinguishers KW - Burnback KW - Fire extinguishment KW - JP-8 KW - Military specification MIL-F-24385F KW - Pool fire KW - Synthetic paraffinic kerosene N1 - Accession Number: 58096877; Pickett, Brent M. 1; Email Address: bmpicke@yahoo.com; Burnette, Parren F. 2; Email Address: parren.burnette@tyndall.af.mil; Wells, Steven P. 2; Email Address: steven.wells@tyndall.af.mil; Sullivan, Patrick D. 1; Email Address: patrick.sullivan@tyndall.af.mil; Hawk, John R. 1; Email Address: john.hawk@tyndall.af.mil; Affiliations: 1: Air Force Research Laboratory, 139 Barnes Drive, Suite 2, Tyndall AFB, FL 32403, USA; 2: Applied Research Associates, P.O. Box 40128, Tyndall AFB, FL 32403, USA; Issue Info: Apr2011, Vol. 46 Issue 3, p89; Thesaurus Term: Fire prevention; Thesaurus Term: Synthetic fuels; Thesaurus Term: FUEL; Thesaurus Term: Diesel fuels; Thesaurus Term: Kerosene; Thesaurus Term: Petroleum; Thesaurus Term: Comparative studies; Subject Term: Jet planes; Subject Term: Fire testing; Subject Term: Fire extinguishers; Author-Supplied Keyword: Burnback; Author-Supplied Keyword: Fire extinguishment; Author-Supplied Keyword: JP-8; Author-Supplied Keyword: Military specification MIL-F-24385F; Author-Supplied Keyword: Pool fire; Author-Supplied Keyword: Synthetic paraffinic kerosene; NAICS/Industry Codes: 454319 Other fuel dealers; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 412110 Petroleum and petroleum products merchant wholesalers; NAICS/Industry Codes: 339999 All Other Miscellaneous Manufacturing; NAICS/Industry Codes: 423990 Other Miscellaneous Durable Goods Merchant Wholesalers; NAICS/Industry Codes: 424720 Petroleum and Petroleum Products Merchant Wholesalers (except Bulk Stations and Terminals); NAICS/Industry Codes: 424710 Petroleum Bulk Stations and Terminals; NAICS/Industry Codes: 486110 Pipeline Transportation of Crude Oil; NAICS/Industry Codes: 211111 Crude Petroleum and Natural Gas Extraction; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.firesaf.2010.11.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=58096877&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Shakir, Sami A. AU - Motes, Raymond Andrew AU - Berdine, Richard W. T1 - Efficient Scalar Beam Propagation Method. JO - IEEE Journal of Quantum Electronics JF - IEEE Journal of Quantum Electronics J1 - IEEE Journal of Quantum Electronics PY - 2011/04// Y1 - 2011/04// VL - 47 IS - 4 M3 - Article SP - 486 EP - 491 SN - 00189197 AB - The beam propagation method developed here is based on expanding the field and the refractive index distributions with a Fourier series in the azimuthal direction, thus replacing a 3-D wave equation with a small number of 2-D wave equations. The method is shown to be substantially faster than standard 3-D finite-difference methods and has comparable level of accuracy. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Journal of Quantum Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GIRDERS KW - REFRACTIVE index KW - FOURIER series KW - WAVE equation KW - FINITE differences KW - ACCURACY N1 - Accession Number: 62559993; Source Information: Apr2011, Vol. 47 Issue 4, p486; Subject Term: GIRDERS; Subject Term: REFRACTIVE index; Subject Term: FOURIER series; Subject Term: WAVE equation; Subject Term: FINITE differences; Subject Term: ACCURACY; Subject Term: ; Number of Pages: 6p; ; Document Type: Article; L3 - 10.1109/JQE.2010.2091395 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=62559993&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Taylor, Clark N. AU - Veth, Michael J. AU - Raquet, John F. AU - Miller, Mikel M. T1 - Comparison of Two Image and Inertial Sensor Fusion Techniques for Navigation in Unmapped Environments. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2011/04//04/01/2011 VL - 47 IS - 2 M3 - Article SP - 946 EP - 958 SN - 00189251 AB - To enable navigation of miniature aerial vehicles (MAVs) with a low-quality inertial measurement unit (IMU), external sensors are typically fused with the information generated by the low-quality IMU. Most commercial systems for MAVs currently fuse GPS measurements with IMU information to navigate the MAV. However there are many scenarios in which an MAV might prove useful, but GPS is not available (e.g., indoors, urban terrain, etc.). Therefore several approaches have recently been introduced that couple information from an IMU with visual information (usually captured by an electro-optical camera). In general the methods for fusing visual information with an IMU utilizes one of two techniques: 1) applying rigid body constraints on where landmarks should appear in a set of two images (constraint-based fusion) or 2) simultaneously estimating the location of features that are observed by the camera (mapping) and the location of the camera (simultaneous localization and mapping—SLAM-based fusion). While each technique has some nuances associated with its implementation in a true MAV environment (i.e., computational requirements, real-time implementation, feature tracking, etc.), this paper focuses solely on answering the question "Which fusion technique (constraint- or SLAM-based) enables more accurate long-term MAV navigation?" To answer this question, specific implementations of a constraint- and SLAM-based fusion technique, with novel modifications for improved results on MAVs, are described. A basic simulation environment is used to perform a comparison of the constraint- and SLAM-based fusion methods. We demonstrate the superiority of SLAM-based techniques in specific MAV flight scenarios and discuss the relative weaknesses and strengths of each fusion approach. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANALYSIS of variance KW - INERTIAL confinement fusion KW - NAVIGATION (Aeronautics) KW - DRONE aircraft KW - GLOBAL Positioning System KW - CONSTRAINT satisfaction (Artificial intelligence) KW - IMAGE processing KW - COMPUTER simulation N1 - Accession Number: 60217274; Taylor, Clark N. 1; Veth, Michael J. 2; Raquet, John F. 3; Miller, Mikel M.; Affiliations: 1: Brigham Young University; 2: Air Force Institute of Technology; 3: Air Force Research Laboratory; Issue Info: 04/01/2011, Vol. 47 Issue 2, p946; Thesaurus Term: ANALYSIS of variance; Subject Term: INERTIAL confinement fusion; Subject Term: NAVIGATION (Aeronautics); Subject Term: DRONE aircraft; Subject Term: GLOBAL Positioning System; Subject Term: CONSTRAINT satisfaction (Artificial intelligence); Subject Term: IMAGE processing; Subject Term: COMPUTER simulation; NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 812922 One-Hour Photofinishing; Number of Pages: 0p; Document Type: Article L3 - 10.1109/TAES.2011.5751236 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=60217274&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Heller, Eric R. AU - Vetury, Rama AU - Green, Daniel S. T1 - Development of a Versatile Physics-Based Finite-Element Model of an AlGaN/GaN HEMT Capable of Accommodating Process and Epitaxy Variations and Calibrated Using Multiple DC Parameters. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices J1 - IEEE Transactions on Electron Devices PY - 2011/04//04/01/2011 Y1 - 2011/04//04/01/2011 VL - 58 IS - 4 M3 - Article SP - 1091 EP - 1095 SN - 00189383 AB - We present a physics-based finite-element model of operation of an AlGaN/GaN HEMT with device geometry inputs taken from transmission electron microscope cross sections and calibrated by comparison with measured electrical data comprising standard field-effect transistor metrics and less well-known model parameters. A variety of electrical outputs from the model are compared to experiment, and the level of agreement is reported. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MODULATION-doped field-effect transistors KW - ALUMINUM compounds KW - GALLIUM nitride KW - FINITE element method KW - DATA modeling KW - TRANSMISSION electron microscopes KW - DIRECT currents N1 - Accession Number: 59470959; Source Information: 04/01/2011, Vol. 58 Issue 4, p1091; Subject Term: MODULATION-doped field-effect transistors; Subject Term: ALUMINUM compounds; Subject Term: GALLIUM nitride; Subject Term: FINITE element method; Subject Term: DATA modeling; Subject Term: TRANSMISSION electron microscopes; Subject Term: DIRECT currents; Subject Term: ; Number of Pages: 5p; ; Document Type: Article; L3 - 10.1109/TED.2011.2107913 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=59470959&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Gilgenbach, Ronald M. AU - Lau, Yue-Ying AU - French, David M. AU - Hoff, Brad W. AU - Franzi, Matthew AU - Luginsland, John T1 - Recirculating Planar Magnetrons for High-Power High-Frequency Radiation Generation. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2011/04//04/01/2011 Y1 - 2011/04//04/01/2011 VL - 39 IS - 4 M3 - Article SP - 980 EP - 987 SN - 00933813 AB - We present designs and simulations of a new class of magnetron, the recirculating planar magnetron. This magnetron has numerous advantages as a high-power microwave generator, including larger cathode and anode area, fast start-up, and compact microwave extraction geometry. The following two geometries are demonstrated by electromagnetic particle-in-cell codes: 1) axial magnetic field with radial electric field and 2) radial magnetic field with axial electric field. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - CATHODES KW - CAVITY resonators KW - ELECTROMAGNETISM KW - SIMULATION methods & models KW - MAGNETIC fields KW - ELECTRIC fields N1 - Accession Number: 59954405; Source Information: 04/01/2011, Vol. 39 Issue 4, p980; Subject Term: MAGNETRONS; Subject Term: CATHODES; Subject Term: CAVITY resonators; Subject Term: ELECTROMAGNETISM; Subject Term: SIMULATION methods & models; Subject Term: MAGNETIC fields; Subject Term: ELECTRIC fields; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.1109/TPS.2010.2099670 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=59954405&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Saba Rasheed Ali AU - Martens, Jessica Kelly AU - Button, Christopher AU - Larma, Nicholas C. T1 - Initial Scale Development of the Contextual Support for Post-Secondary Planning Scales. JO - Journal of Career Development (Sage Publications Inc. ) JF - Journal of Career Development (Sage Publications Inc. ) Y1 - 2011/04//04/01/2011 VL - 38 IS - 2 M3 - Article SP - 128 EP - 146 SN - 08948453 AB - Vocational psychologists and career theorists have articulated the importance of social support in the development of career plans for high school youth. More recently, Lent, Brown, and Hackett carefully articulated the location of contextual supports in the Social Cognitive Career Theory (SCCT) framework. However, there is a paucity of research examining contextual supports in relation to career outcomes due to a lack of adequate measures. The current article describes the initial development of the Contextual Support for Post-Secondary Planning Scales. These six scales were designed to assess support for postsecondary career planning for high school students from six sources (i.e., mother, father, sibling, peers, school personnel, and community). A study was conducted to determine the underlying factor structure of measure (n = 316 high school students), and exploratory factor analyses revealed a one-factor solution of general support across the six scales. The implications for the use of these measures in research and practice are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Career Development (Sage Publications Inc. ) is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VOCATIONAL guidance KW - EDUCATIONAL counseling KW - SOCIAL support KW - HIGH school students KW - FACTOR analysis KW - high school students KW - social cognitive career theory KW - test reliability/validity N1 - Accession Number: 59955399; Saba Rasheed Ali 1; Email Address: saba-ali@uiowa.edu; Martens, Jessica Kelly 1; Button, Christopher 2; Larma, Nicholas C. 3; Affiliations: 1: University of Iowa, Iowa City, IA, USA,; 2: McConnell AFB, United States Air Force, Kansas City, KS, USA; 3: Federal Bureau of Prisons, Washington, DC, USA; Issue Info: 04/01/2011, Vol. 38 Issue 2, p128; Thesaurus Term: VOCATIONAL guidance; Subject Term: EDUCATIONAL counseling; Subject Term: SOCIAL support; Subject Term: HIGH school students; Subject Term: FACTOR analysis; Author-Supplied Keyword: high school students; Author-Supplied Keyword: social cognitive career theory; Author-Supplied Keyword: test reliability/validity; NAICS/Industry Codes: 624310 Vocational Rehabilitation Services; NAICS/Industry Codes: 624190 Other Individual and Family Services; Number of Pages: 19p; Document Type: Article; Full Text Word Count: 7201 L3 - 10.1177/0894845310372375 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=59955399&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 104711123 T1 - All massive transfusion criteria are not created equal: defining the predictive value of individual transfusion triggers to better determine who benefits from blood. AU - Callcut RA AU - Johannigman JA AU - Kadon KS AU - Hanseman DJ AU - Robinson BR Y1 - 2011/04// N1 - Accession Number: 104711123. Language: English. Entry Date: 20110812. Revision Date: 20150711. Publication Type: Journal Article; research. Journal Subset: Biomedical; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Critical Care; Emergency Care. NLM UID: 0376373. KW - Blood Transfusion -- Methods KW - Hemorrhage -- Therapy KW - Risk Assessment -- Methods KW - Wounds and Injuries -- Therapy KW - Adolescence KW - Adult KW - Aged KW - Aged, 80 and Over KW - Blood Pressure KW - Female KW - Prospective Studies KW - Hemorrhage -- Mortality KW - Hemorrhage -- Physiopathology KW - Human KW - Male KW - Middle Age KW - ROC Curve KW - Retrospective Design KW - Trauma Centers KW - Treatment Outcomes KW - Wounds and Injuries -- Mortality KW - Wounds and Injuries -- Physiopathology KW - Young Adult SP - 794 EP - 801 JO - Journal of Trauma JF - Journal of Trauma JA - J TRAUMA VL - 70 IS - 4 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - BACKGROUND: : As familiarity with military massive transfusion (MT) triggers has increased, there is a growing interest in applying these in the civilian population to initiate MT protocols (MTP) earlier. We hypothesize that these triggers do not have equal predictability for MT and understanding the contribution of each would improve our ability to initiate the MTP earlier. METHODS: : All patients presenting to a Level I trauma center from October 2007 to September 2008 requiring immediate operation were included in this study. Emergency department records, operative logs, and blood transfusion data from arrival to procedure end were analyzed using multivariate regression techniques. Triggers included systolic blood pressure (SBP) <90 mm Hg, hemoglobin <11 g/dL, temperature <35.5°C, International normalized ratio (INR) >1.5, and base deficit >=6. RESULTS: : One hundred seventy patients required immediate operation with an overall survival of 91%. Transfusion of packed red blood cells was noted in 45% (77 of 170) with the mean number of transfused units highest in those meeting SBP (12.9 Units) or INR (12.3 Units) triggers. The triggers do not contribute equal predictive value for the need for transfusion with INR being the most predictive (odds ratio, 16.7; 95% confidence interval, 2-137) for any transfusion and highly predictive for the need for MT (odds ratio, 11.3; 95% confidence interval, 3-47). In fact, if patients met either INR or SBP triggers alone, they were likely to receive MT (p = 0.018 and 0.003, respectively). CONCLUSION: : Triggers have differential predictive values for need for transfusion. Defining the individual utility of each criterion will help to identify those most likely to benefit from an early initiation of the MTP. SN - 0022-5282 AD - From the Department of Surgery (R.A.C.), Section of Trauma and Critical Care, Stanford University, Stanford, California; Department of Surgery (J.A.J., K.S.K., D.J.H., B.R.H.R.), Division of Trauma and Critical Care, University of Cincinnati, Cincinnati, Ohio; and Center for Sustainment of Trauma and Readiness Skills (D.J.H.), United States Air Force, Cincinnati, Ohio. U2 - PMID: 21610387. DO - 10.1097/TA.0b013e3182127e40 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104711123&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Teodoro, João S. AU - Simões, Anabela M. AU - Duarte, Filipe V. AU - Rolo, Anabela P. AU - Murdoch, Richard C. AU - Hussain, Saber M. AU - Palmeira, Carlos M. T1 - Assessment of the toxicity of silver nanoparticles in vitro: A mitochondrial perspective JO - Toxicology in Vitro JF - Toxicology in Vitro Y1 - 2011/04// VL - 25 IS - 3 M3 - Article SP - 664 EP - 670 SN - 08872333 AB - Abstract: The major toxicological concern associated with nanomaterials is the fact that some manufactured nanomaterials are redox active, and some particles transport across cell membranes, especially into mitochondria. Thus, evaluation of their toxicity upon acute exposure is essential. In this work, we evaluated the toxicity of silver nanoparticles (40 and 80nm) and their effects in rat liver mitochondria bioenergetics. Wistar rat liver mitochondria demonstrate alterations in respiration and membrane potential capacities in the presence of either 40 or 80nm silver nanoparticles. Our data demonstrated a statistically significant decrease in mitochondrial membrane potential, ADP-induced depolarization, and respiratory control ratio (RCR) upon exposure to silver nanoparticles. Our results show that silver nanoparticles cause impairment of mitochondrial function, due mainly to alterations of mitochondrial membrane permeability. This results in an uncoupling effect on the oxidative phosphorylation system. Thus, mitochondrial toxicity may have a central role in the toxicity resulting from exposure to silver nanoparticles. [Copyright &y& Elsevier] AB - Copyright of Toxicology in Vitro is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Metals -- Toxicology KW - Cell membranes KW - Mitochondria KW - Bioenergetics KW - Colloidal silver KW - Nanostructured materials KW - Manufactures KW - Phosphorylation KW - Mitochondrial toxicity KW - Silver nanoparticles N1 - Accession Number: 58746890; Teodoro, João S. 1; Simões, Anabela M. 1; Duarte, Filipe V. 1; Rolo, Anabela P. 1; Murdoch, Richard C. 2; Hussain, Saber M. 2; Palmeira, Carlos M. 1; Email Address: palmeira@ci.uc.pt; Affiliations: 1: Center for Neurosciences and Cell Biology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal; 2: 711th Human Performance Wing, Applied Biotechnology Branch, RHPB Air Force Research Laboratory, Wright Patterson AFB, Dayton, OH, USA; Issue Info: Apr2011, Vol. 25 Issue 3, p664; Thesaurus Term: Metals -- Toxicology; Thesaurus Term: Cell membranes; Thesaurus Term: Mitochondria; Thesaurus Term: Bioenergetics; Subject Term: Colloidal silver; Subject Term: Nanostructured materials; Subject Term: Manufactures; Subject Term: Phosphorylation; Author-Supplied Keyword: Mitochondrial toxicity; Author-Supplied Keyword: Silver nanoparticles; NAICS/Industry Codes: 339999 All Other Miscellaneous Manufacturing; NAICS/Industry Codes: 339990 All other miscellaneous manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.tiv.2011.01.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=58746890&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2011-06981-001 AN - 2011-06981-001 AU - Dahlstrom, Nicklas AU - Nahlinder, Staffan AU - Wilson, Glenn F. AU - Svensson, Erland T1 - Recording of psychophysiological data during aerobatic training. JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 2011/04// VL - 21 IS - 2 SP - 105 EP - 122 CY - United Kingdom PB - Taylor & Francis SN - 1050-8414 SN - 1532-7108 AD - Dahlstrom, Nicklas, Lund University, School of Aviation, Drottningvagen 5, SE-260 70, Ljungbyhed, Sweden N1 - Accession Number: 2011-06981-001. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Dahlstrom, Nicklas; Lund University, School of Aviation, Ljungbyhed, Sweden. Other Publishers: Lawrence Erlbaum. Release Date: 20110711. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aviation; Psychophysiology. Minor Descriptor: Work Load. Classification: Physiological Processes (2540). Population: Human (10); Male (30). Location: Sweden. Age Group: Adulthood (18 yrs & older) (300); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 18. Issue Publication Date: Apr, 2011. Copyright Statement: Taylor & Francis Group, LLC. 2011. AB - Measuring pilot mental workload can be important for understanding cognitive demands during flight involving unusual movements and attitudes. Data on heart rate, eye movements, EEG, and subjective ratings from 7 flight instructors were collected for a flight including a repeated aerobatics sequence. Heart rate data and subjective ratings showed that aerobatic sequences produced the highest levels of mental workload and that heart rate can identify low-G flight segments with high mental workload. Blink rate and eye movement data did not support previous research regarding their relation to mental workload. EEG data were difficult to analyze due to muscle artifacts. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - psychophysiological data KW - aerobatic training KW - mental workload KW - 2011 KW - Aviation KW - Psychophysiology KW - Work Load KW - 2011 DO - 10.1080/10508414.2011.556443 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-06981-001&site=ehost-live&scope=site UR - nicklas.dahlstrom@tfhs.lu.se DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-07658-002 AN - 2011-07658-002 AU - Ali, Saba Rasheed AU - Martens, Jessica Kelly AU - Button, Christopher AU - Larma, Nicholas C. T1 - Initial scale development of the Contextual Support for Post-Secondary Planning Scales. JF - Journal of Career Development JO - Journal of Career Development JA - J Career Dev Y1 - 2011/04// VL - 38 IS - 2 SP - 128 EP - 146 CY - US PB - Sage Publications SN - 0894-8453 SN - 1573-3548 AD - Ali, Saba Rasheed, University of Iowa, 361 Lindquist Center, Iowa City, IA, US, 52242 N1 - Accession Number: 2011-07658-002. Other Journal Title: Journal of Career Education. Partial author list: First Author & Affiliation: Ali, Saba Rasheed; Counseling Psychology Department, University of Iowa, Iowa City, IA, US. Other Publishers: Springer. Release Date: 20110704. Correction Date: 20120618. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Career Development; Occupational Guidance; Rating Scales; Social Support; Test Construction. Minor Descriptor: High School Students. Classification: Educational Measurement (2227); Educational/Vocational Counseling & Student Services (3580). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adolescence (13-17 yrs) (200). Tests & Measures: Kinship Support Scale; Social Provisions Scale; Sibling Scale; School Personnel Scale; Contextual Support for Post Secondary Plans Scale. Methodology: Empirical Study; Interview; Focus Group; Quantitative Study. References Available: Y. Page Count: 19. Issue Publication Date: Apr, 2011. Copyright Statement: Curators of the University of Missouri. 2011. AB - Vocational psychologists and career theorists have articulated the importance of social support in the development of career plans for high school youth. More recently, Lent, Brown, and Hackett carefully articulated the location of contextual supports in the Social Cognitive Career Theory (SCCT) framework. However, there is a paucity of research examining contextual supports in relation to career outcomes due to a lack of adequate measures. The current article describes the initial development of the Contextual Support for Post-Secondary Planning Scales. These six scales were designed to assess support for postsecondary career planning for high school students from six sources (i.e., mother, father, sibling, peers, school personnel, and community). A study was conducted to determine the underlying factor structure of measure (n = 316 high school students), and exploratory factor analyses revealed a one-factor solution of general support across the six scales. The implications for the use of these measures in research and practice are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Contextual Support for Post-Secondary Planning Scale KW - social support KW - test development KW - career plans KW - high school students KW - 2011 KW - Career Development KW - Occupational Guidance KW - Rating Scales KW - Social Support KW - Test Construction KW - High School Students KW - 2011 U1 - Sponsor: University of Iowa, Iowa Measurement Research Foundation, US. Recipients: No recipient indicated DO - 10.1177/0894845310372375 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-07658-002&site=ehost-live&scope=site UR - saba-ali@uiowa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-08894-004 AN - 2011-08894-004 AU - Wells, Timothy S. AU - Miller, Shannon C. AU - Adler, Amy B. AU - Engel, Charles C. AU - Smith, Tyler C. AU - Fairbank, John A. T1 - Mental health impact of the Iraq and Afghanistan conflicts: A review of US research, service provision, and programmatic responses. JF - International Review of Psychiatry JO - International Review of Psychiatry JA - Int Rev Psychiatry Y1 - 2011/04// VL - 23 IS - 2 SP - 144 EP - 152 CY - US PB - Informa Healthcare SN - 0954-0261 SN - 1369-1627 AD - Wells, Timothy S., Center for Deployment Health Research, Naval Health Research Center, 140 Sylvester Road, San Diego, CA, US, 92106-5122 N1 - Accession Number: 2011-08894-004. PMID: 21521083 Partial author list: First Author & Affiliation: Wells, Timothy S.; Center for Deployment Health Research, Naval Health Research Center, San Diego, CA, US. Other Publishers: Taylor & Francis. Release Date: 20110620. Correction Date: 20150921. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Health Care Delivery; Mental Disorders; Mental Health; Mental Health Services; Resilience (Psychological). Minor Descriptor: Military Personnel; War. Classification: Health & Mental Health Services (3370); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Literature Review. References Available: Y. Page Count: 9. Issue Publication Date: Apr, 2011. Publication History: Accepted Date: Jan 26, 2011; First Submitted Date: Dec 3, 2010. Copyright Statement: Institute of Psychiatry. 2011. AB - Although documentation that war inflicts psychological casualties dates back to the American Civil War and earlier, most research began after the Vietnam conflict, when studies focused on post-traumatic stress disorder (PTSD). With ongoing conflicts in Iraq and Afghanistan, there has been significant research to illuminate the epidemiology of war-related psychological casualties. Significant findings include an appreciation for the role combat plays in the development of mental disorders, including PTSD and traumatic brain injury (TBI). Recent research has endeavoured to understand and improve psychological resilience to temper potentially adverse mental health effects of military service in the theatre of combat operations. Over 2 million US service members have now deployed and returned over 3 million times to the Iraq and Afghanistan conflicts. Mental health providers in the Departments of Defense and Veterans Affairs healthcare systems have consequently observed steep increases in mental health service use among these personnel. The Departments have responded aggressively to bolster staffing levels, increase capacity, improve available services, and anticipate future needs. Scientists and clinicians continue efforts to understand the determinants, prevention, recognition, and treatment of combat-related mental disorders. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - mental health impacts KW - Iraq KW - Afghanistan KW - war KW - military personnel KW - psychological casualties KW - psychological resilience KW - service provision KW - programmatic responses KW - 2011 KW - Health Care Delivery KW - Mental Disorders KW - Mental Health KW - Mental Health Services KW - Resilience (Psychological) KW - Military Personnel KW - War KW - 2011 U1 - Sponsor: US Department of Veterans Affairs, US. Grant: 60002. Other Details: 11-XX and work unit. Recipients: No recipient indicated U1 - Sponsor: US Department of Defense, US. Grant: 60002. Recipients: No recipient indicated DO - 10.3109/09540261.2011.558833 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-08894-004&site=ehost-live&scope=site UR - timothy.wells@med.navy.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Basler, Matt T1 - The Jet Race and the Second World War. JO - Air Power History JF - Air Power History J1 - Air Power History PY - 2011///Spring2011 Y1 - 2011///Spring2011 VL - 58 IS - 1 M3 - Book Review SP - 48 EP - 49 PB - Air Force Historical Foundation SN - 1044016X AB - A review of the book "The Jet Race and the Second World War," by Sterling Michael Pavelec is presented. KW - JET Race & the Second World War, The (Book) KW - PAVELEC, Sterling Michael KW - JET propulsion KW - NONFICTION N1 - Accession Number: 59757497; Source Information: Spring2011, Vol. 58 Issue 1, p48; Subject Term: JET Race & the Second World War, The (Book); Subject Term: PAVELEC, Sterling Michael; Subject Term: JET propulsion; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=59757497&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Webb, Timothy S. AU - Wells, Timothy S. T1 - Civil engineering airman at increased risk for injuries and injury-related musculoskeletal disorders. JO - American Journal of Industrial Medicine JF - American Journal of Industrial Medicine Y1 - 2011/03// VL - 54 IS - 3 M3 - Article SP - 248 EP - 254 SN - 02713586 AB - Background With the advent of electronic records, the opportunity to conduct research on workplace-related injuries and musculoskeletal disorders has increased dramatically. The purpose of this study was to examine the United States Air Force Civil Engineering career field to determine if they are negatively impacted by their work environment. Specifically, the objective of this study was to determine if enlisted Civil Engineering Airmen (n=25,385) were at increased risk for injury or injury-related musculoskeletal disorders compared to enlisted Information Management/Communications Airmen (n=28,947). Methods Using an historical prospective design, electronic data were assembled and analyzed using Cox's proportional hazards modeling. Models were stratified by gender and adjusted for race/ethnicity, marital status, birth year, and deployment status. Results Male Civil Engineers were observed to be at greater risk for both inpatient injury related musculoskeletal disorders (HR=1.86; 95% CI=1.54-2.26) and injuries (HR=1.77; 95% CI=1.48-2.11), while female Civil Engineers were more than double the risk for both inpatient injury-related musculoskeletal disorders (HR=2.18; 95% CI=1.28-3.73) and injuries (HR=2.22; 95% CI=1.27-3.88) compared to Information Management/Communications Airmen. Conclusions Although analyses do not allow exploration of specific causes, they highlight the utility of using electronic data to identify occupations for further evaluation. Based on these results, additional resources were allocated to survey Civil Engineers on their physical work demands and job requirements to identify key problem areas for further study and mitigation. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Industrial Medicine is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WOUNDS & injuries KW - Wounds & injuries KW - DISEASES KW - Airmen KW - RISK factors KW - Civil engineers KW - Musculoskeletal system KW - Information resources management KW - Air forces -- Officials & employees KW - electronic health records KW - epidemiology KW - occupational health KW - proportional hazards model KW - work capacity evaluation N1 - Accession Number: 57828875; Webb, Timothy S. 1; Email Address: timothy.webb@wpafb.af.mil; Wells, Timothy S. 1; Affiliations: 1: 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Ohio; Issue Info: Mar2011, Vol. 54 Issue 3, p248; Thesaurus Term: WOUNDS & injuries; Thesaurus Term: Wounds & injuries; Thesaurus Term: DISEASES; Subject Term: Airmen; Subject Term: RISK factors; Subject Term: Civil engineers; Subject Term: Musculoskeletal system; Subject Term: Information resources management; Subject Term: Air forces -- Officials & employees; Author-Supplied Keyword: electronic health records; Author-Supplied Keyword: epidemiology; Author-Supplied Keyword: occupational health; Author-Supplied Keyword: proportional hazards model; Author-Supplied Keyword: work capacity evaluation; NAICS/Industry Codes: 541330 Engineering Services; NAICS/Industry Codes: 519190 All Other Information Services; Number of Pages: 7p; Document Type: Article L3 - 10.1002/ajim.20907 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=57828875&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Katta, V.R. AU - Forlines, R.A. AU - Roquemore, W.M. AU - Anderson, W.S. AU - Zelina, J. AU - Gord, J.R. AU - Stouffer, S.D. AU - Roy, S. T1 - Experimental and computational study on partially premixed flames in a centerbody burner JO - Combustion & Flame JF - Combustion & Flame Y1 - 2011/03// VL - 158 IS - 3 M3 - Article SP - 511 EP - 524 SN - 00102180 AB - Abstract: The centerbody burner was designed with the objective of understanding the coupled processes of soot formation, growth, and burnout. Fuel that issues from the center of the burner establishes two flame zones – one associated with the recirculation zone (RZ) and the other, with the trailing jet. The sooting characteristics in these two flame zones can be quite different because of variations in residence time and transport of reactants and products. Calculations performed for this burner operating under a partially premixed fuel jet suggested that soot in the RZ decreases and that soot in the trailing jet flame increases with the amount of premixing. An experimental and numerical study is performed to aid the understanding of these differences. A time-dependent, axisymmetric, detailed-chemistry computational-fluid-dynamics (CFD) model known as Unsteady Ignition and Combustion using ReactioNs (UNICORN) is used for simulating flames under different equivalence-ratio conditions. Combustion and PAH formation are modeled using the Wang–Frenklach (99 species and 1066 reactions) mechanism, and soot is simulated using a two-equation model of Lindstedt. A Lagrangian-based particle-tracking model is used for understanding the evolution of soot-like particles. Flame and recirculation-zone structures and soot in the experiments are identified using direct photographs taken with and without Mie scattering from soot particles as well as laser-induced-incandescence (LII) measurements. Calculations predict the structures of the partially premixed centerbody flames for various equivalence ratios reasonably well. Experiments confirm the predicted soot suppression in the RZs and enhancement of soot in the trailing jet flame when air is added to the fuel jet. It is found that flame movement in the RZ increases soot-particle burnout and, thereby, reduces the amount of soot within the RZ. As the flame moves closer to the fuel jet, more soot becomes entrained into the inner vortex. Motion of soot-like particles explained the spiral rings observed in the experiment. Increased particle burnout with partial premixing leads to shrinkage of soot spirals. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Soot KW - Combustion KW - Particles KW - FUEL KW - Flame KW - Mie scattering KW - Jet planes KW - Fluid dynamics KW - Lagrangian functions KW - Laminar flames KW - Modeling KW - Partially premixed flames N1 - Accession Number: 57517467; Katta, V.R. 1; Email Address: viswanath.katta@wpafb.af.mil; Forlines, R.A. 1; Roquemore, W.M. 2; Anderson, W.S. 2; Zelina, J. 2; Gord, J.R. 2; Stouffer, S.D. 3; Roy, S. 4; Affiliations: 1: Innovative Scientific Solutions Inc., 2766 Indian Ripple Road, Dayton, OH 45440, United States; 2: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, United States; 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, United States; 4: Spectral Energies, LLC, 5100 Springfield Street, Dayton, OH 45431, United States; Issue Info: Mar2011, Vol. 158 Issue 3, p511; Thesaurus Term: Soot; Thesaurus Term: Combustion; Thesaurus Term: Particles; Thesaurus Term: FUEL; Subject Term: Flame; Subject Term: Mie scattering; Subject Term: Jet planes; Subject Term: Fluid dynamics; Subject Term: Lagrangian functions; Author-Supplied Keyword: Laminar flames; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Partially premixed flames; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.combustflame.2010.09.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=57517467&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - BAYRAKTAROGLU, BURHAN AU - LEEDY, KEVIN AU - NEIDHARD, ROBERT T1 - ZnO NANOCRYSTALLINE HIGH PERFORMANCE THIN FILM TRANSISTORS. JO - International Journal of High Speed Electronics & Systems JF - International Journal of High Speed Electronics & Systems Y1 - 2011/03// VL - 20 IS - 1 M3 - Article SP - 171 EP - 182 SN - 01291564 AB - In this study, nc-ZnO films deposited in a Pulsed Laser Deposition (PLD) system at various temperatures were used to fabricate high performance transistors. As determined by Transmission Electron Microscope (TEM) images, nc-ZnO films deposited at a temperature range of 25°C to 400°C were made of closely packed nanocolums showing strong orientation. The influences of film growth temperature and post growth annealing on device performance were investigated. Various gate dielectric materials, including SiO2, Al2O3, and HfO2 were shown to be suitable for high performance device applications. Bottom-gate FETs fabricated on high resistivity (>2000 ohm-cm) Si substrates demonstrated record DC and high speed performance of any thin film transistors. Drain current on/off ratios better than 1012 and sub-threshold voltage swing values of less than 100mV/decade could be obtained. Devices with 2μm gate lengths produced exceptionally high current densities of >750mA/mm. Shorter gate length devices (LG=1.2μm) had current and power gain cut-off frequencies, fT and fmax, of 2.9GHz and 10GHz, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of High Speed Electronics & Systems is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERFORMANCE evaluation KW - THIN film transistors KW - ZINC oxide thin films KW - NANOCRYSTALS KW - PHYSICAL vapor deposition KW - TRANSMISSION electron microscopy KW - MICROFABRICATION KW - atomic layer deposition KW - FET KW - Nanocrystalline KW - pulsed lased deposition KW - thin films N1 - Accession Number: 60159165; BAYRAKTAROGLU, BURHAN 1; Email Address: burhan.bayraktaroglu@wpafb.af.mil; LEEDY, KEVIN 1; NEIDHARD, ROBERT 1; Affiliations: 1: Air force Research Laboratory, AFRL/RYD, Wright Patterson Air Force Base, OH 45433, USA; Issue Info: Mar2011, Vol. 20 Issue 1, p171; Thesaurus Term: PERFORMANCE evaluation; Subject Term: THIN film transistors; Subject Term: ZINC oxide thin films; Subject Term: NANOCRYSTALS; Subject Term: PHYSICAL vapor deposition; Subject Term: TRANSMISSION electron microscopy; Subject Term: MICROFABRICATION; Author-Supplied Keyword: atomic layer deposition; Author-Supplied Keyword: FET; Author-Supplied Keyword: Nanocrystalline; Author-Supplied Keyword: pulsed lased deposition; Author-Supplied Keyword: thin films; Number of Pages: 12p; Illustrations: 1 Diagram, 9 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=60159165&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Barrows, Stephen P. AD - US Air Force Academy T1 - Labor Economics and the Development of Papal Social Encyclicals JO - Journal of Markets and Morality JF - Journal of Markets and Morality Y1 - 2011///Spring VL - 14 IS - 1 SP - 7 EP - 22 SN - 10981217 N1 - Accession Number: 1344177; Keywords: Economics; Publication Type: Journal Article; Update Code: 201301 N2 - Catholic social teaching has been the subject of debate among Catholics and non-Catholics alike for over a century. Some laissez-faire-oriented economists find that ideas found in the papal social encyclicals are at times in tension with economic laws. This article analyzes the development of economic understanding in the social encyclicals as it pertains to labor concerns. Specifically, it seeks to demonstrate that the encyclicals shift from a one-sided emphasis on employers' responsibilities in providing just economic outcomes (supply side) to a greater emphasis on the role of consumers (demand side) in more recent encyclicals. This development in economic understanding has helped to relieve some of the friction between the encyclicals and economic law. Indeed, future encyclicals could further mitigate tensions by explicitly acknowledging how both supply and demand factors must be taken into account if socioeconomic goals are to be achieved. KW - Relation of Economics to Social Values A13 KW - Cultural Economics: Religion Z12 L3 - http://www.marketsandmorality.com/index.php/mandm/issue/archive UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1344177&site=ehost-live&scope=site UR - http://www.marketsandmorality.com/index.php/mandm/issue/archive DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Mastroianni, George R. T1 - THE PERSON-SITUATION DEBATE: IMPLICATIONS FOR MILITARY LEADERSHIP AND CIVILIAN-MILITARY RELATIONS. JO - Journal of Military Ethics JF - Journal of Military Ethics J1 - Journal of Military Ethics PY - 2011/03// Y1 - 2011/03// VL - 10 IS - 1 M3 - Article SP - 2 EP - 16 PB - Routledge SN - 15027570 AB - The so-called person-situation debate in psychology, which pits internal, personality-based explanations of behavior against external, environment or situation-based explanations seems headed for a resolution that will somehow include elements of both perspectives. These two alternative views of human behavior have also been applied to that subset of human behavior thought of as leadership, and in this domain a rapprochement also seems well underway. In the domain of ethical leadership, however, especially as applied to military misconduct, public discussion of such events is dominated by strictly situation-based explanations, while institutional developments within the military are showing signs of integration, paralleling developments in the broader academic domain. The public discussion of such events thus lags behind the approach to ethical conduct in war taken by the military, which increasingly integrates personal and situational factors in the moral and ethical development of soldiers and leaders. Potential consequences of overreliance on situationist approaches to military ethics are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Military Ethics is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PSYCHOLOGY KW - MILITARY art & science KW - LEADERSHIP KW - MILITARY personnel KW - ETHICS KW - MILITARY ethics N1 - Accession Number: 60294618; Source Information: Mar2011, Vol. 10 Issue 1, p2; Subject Term: PSYCHOLOGY; Subject Term: MILITARY art & science; Subject Term: LEADERSHIP; Subject Term: MILITARY personnel; Subject Term: ETHICS; Subject Term: MILITARY ethics; Subject Term: ; Number of Pages: 15p; ; Document Type: Article; L3 - 10.1080/15027570.2011.561636 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=60294618&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2014-12417-004 AN - 2014-12417-004 AU - Calhoun, Gloria L. AU - Ruff, Heath A. AU - Draper, Mark H. AU - Wright, Evan J. T1 - Automation-level transference effects in simulated multiple unmanned aerial vehicle control. JF - Journal of Cognitive Engineering and Decision Making JO - Journal of Cognitive Engineering and Decision Making JA - J Cogn Eng Decis Mak Y1 - 2011/03// VL - 5 IS - 1 SP - 55 EP - 82 CY - US PB - Sage Publications SN - 1555-3434 AD - Calhoun, Gloria L., 711 HPW, WPAFB, 2210 8th St., Bldg. 146, Rm. 122, Dayton, OH, US, 45433 N1 - Accession Number: 2014-12417-004. Partial author list: First Author & Affiliation: Calhoun, Gloria L.; Air Force Research Laboratory, 711th Human Performance Wing, OH, US. Release Date: 20140602. Correction Date: 20151116. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Automation; Human Computer Interaction; Simulation. Minor Descriptor: Robotics. Classification: Robotics (4140); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Trust Scale. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 28. Issue Publication Date: Mar, 2011. AB - Supervisory control of multiple unmanned aerial vehicles (UAVs) raises many questions concerning the balance of system autonomy with human interaction for effective operator situation awareness and system performance. The reported experiment used a UAV simulation environment to evaluate two applications of autonomy levels across two primary control tasks: allocation (assignment of sensor tasks to vehicles) and router (determining vehicles’ flight plans). In one application, the autonomy level was the same across these two tasks. In the other, the autonomy levels differed, one of the two tasks being more automated than the other. Trials also involved completion of other mission-related secondary tasks as participants supervised three UAVs. The results showed that performance on both the primary tasks and many secondary tasks was better when the level of automation was the same across the two sequential primary tasks. These findings suggest that having the level of automation similar across closely coupled tasks reduces mode awareness problems, which can negate the intended benefits of a fine-grained application of automation. Several research issues are identified to further explore the impact of automation-level transference in supervisory control applications involving the application of automation across numerous tasks. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - unmanned aerial vehicles KW - human-robot interaction KW - level of automation KW - supervisory control KW - simulation environment KW - robots KW - 2011 KW - Automation KW - Human Computer Interaction KW - Simulation KW - Robotics KW - 2011 DO - 10.1177/1555343411399069 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-12417-004&site=ehost-live&scope=site UR - gloria.calhoun@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Fritzinger, Angela E. AU - Walters, Carol C. AU - Kelly, Sean T. AU - Toney, Denise M. T1 - Viral Gastroenteritis: Pathogenesis and Laboratory Detection and Characterization in the Commonwealth of Virginia JO - Clinical Microbiology Newsletter JF - Clinical Microbiology Newsletter Y1 - 2011/02/15/ VL - 33 IS - 4 M3 - Article SP - 25 EP - 31 SN - 01964399 AB - Abstract: Public health laboratories perform testing to identify and characterize cases and clusters of acute gastroenteritis (AGE). Viral pathogens, in particular norovirus, are reportedly the most common cause of AGE outbreaks. CaliciNet, a centralized database at the Centers for Disease Control and Prevention, collects and compares viral sequences for surveillance and outbreak tracking purposes. At the state level, viral agent testing supports epidemiologic investigations of AGE outbreaks. The resulting data are used to educate the public health and medical communities and to track mutations that may impact testing methods. A retrospective analysis of norovirus data generated by the Virginia State Laboratory between 2001 and 2009 assessed statewide trends compared to national data. The data demonstrate that Norovirus genogroup II outbreaks are the most prevalent cause of AGE outbreaks and that outbreaks exhibit a higher occurrence in the winter months and in adult care facilities in Virginia and nationally. [Copyright &y& Elsevier] AB - Copyright of Clinical Microbiology Newsletter is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Public health KW - Pathogenic microorganisms KW - Epidemics KW - Epidemiology KW - Gastroenteritis KW - Preventive medicine KW - Retrospective studies KW - Virginia N1 - Accession Number: 57857406; Fritzinger, Angela E. 1; Walters, Carol C. 1,2,3; Kelly, Sean T. 1; Toney, Denise M. 1; Email Address: denise.toney@dgs.virginia.gov; Affiliations: 1: Commonwealth of Virginia, Division of Consolidated Laboratory Services, VA; 2: Virginia Commonwealth University, Department of Microbiology and Immunology, Richmond, VA; 3: Air Force Institute of Technology, Civilian Institution Programs, United States Air Force; Issue Info: Feb2011, Vol. 33 Issue 4, p25; Thesaurus Term: Public health; Thesaurus Term: Pathogenic microorganisms; Thesaurus Term: Epidemics; Thesaurus Term: Epidemiology; Subject Term: Gastroenteritis; Subject Term: Preventive medicine; Subject Term: Retrospective studies; Subject: Virginia; NAICS/Industry Codes: 525120 Health and Welfare Funds; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.clinmicnews.2011.01.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=57857406&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Tandon, G.P. AU - Pochiraju, K.V. T1 - Heterogeneous Thermo-oxidative Behavior of Multidirectional Laminated Composites. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2011/02/15/ VL - 45 IS - 4 M3 - Article SP - 415 EP - 435 SN - 00219983 AB - This article examines the through-the-thickness heterogeneity observed in oxidation profiles of composite laminates. The effect of ply angle on oxygen diffusivity and the influence of ply stacking sequence on oxidation behavior of isothermally aged multidirectional composites are discussed by correlating experimental observations and a three-dimensional oxidation model. Experimental observations of oxidation growth are made using dark-field optical microscopy, while damage initiation and growth is detected using fluorescence imaging with dye impregnation. Oxidation growth in laminated systems is simulated using a diffusion-reaction-conversion model developed earlier for resin oxidation along with homogenization techniques. Several stacking sequences of carbon fiber-reinforced polyimide composites are studied. The effects of the orthotropy in the diffusivity tensors of each ply and the influence of neighboring ply on oxidation growth are clearly illustrated. The simulation results presented in this article are valid till the onset of damage, beyond which coupling effects between oxidation growth and damage evolution have to be addressed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INHOMOGENEOUS materials KW - COMPOSITE materials KW - LAMINATED materials KW - OXIDATION KW - OXYGEN KW - SIMULATION methods & models KW - CORRELATION (Statistics) KW - anisotropic oxidation KW - damage KW - micromechanics KW - optical microscopy KW - ply orientation KW - polyimides KW - stacking sequence N1 - Accession Number: 58645615; Tandon, G.P. 1; Pochiraju, K.V. 2; Source Information: 02/15/2011, Vol. 45 Issue 4, p415; Subject: INHOMOGENEOUS materials; Subject: COMPOSITE materials; Subject: LAMINATED materials; Subject: OXIDATION; Subject: OXYGEN; Subject: SIMULATION methods & models; Subject: CORRELATION (Statistics); Author-Supplied Keyword: anisotropic oxidation; Author-Supplied Keyword: damage; Author-Supplied Keyword: micromechanics; Author-Supplied Keyword: optical microscopy; Author-Supplied Keyword: ply orientation; Author-Supplied Keyword: polyimides; Author-Supplied Keyword: stacking sequence; Number of Pages: 21p; Document Type: Article; Full Text Word Count: 6693 L3 - 10.1177/0021998310376109 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=58645615&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Gunderson, S. AU - Fultz, G. AU - Snyder, C. AU - Wright, J. AU - Gschwender, L. AU - Heidger, S. T1 - The effect of water content on the dielectric strength of polyalphaolefin (PAO) coolants. JO - IEEE Transactions on Dielectrics & Electrical Insulation JF - IEEE Transactions on Dielectrics & Electrical Insulation J1 - IEEE Transactions on Dielectrics & Electrical Insulation PY - 2011/02//2/ 1/2011 Y1 - 2011/02//2/ 1/2011 VL - 18 IS - 1 M3 - Article SP - 295 EP - 302 SN - 10709878 AB - Many variables can affect the dielectric strength of coolants and insulating fluids including particulates, water content, temperature, viscosity, and pressure. The present paper evaluates the effects of dissolved water content, adjusted in a controlled manner, on the dielectric strength and the variability of breakdown voltages in synthetic polyalphaolefin (PAO) MIL-PRF-87252 coolants obtained from three different suppliers. Additionally, the effect on dielectric strength of using nitrogen gas versus air for the removal of water is evaluated. The results indicate that the dielectric strength of the fluids decreases by up to 80% over a range of 0 to 70 ppm water content. The variability in breakdown voltage generally increases with increasing water content for all of the samples tested. These results indicate the notable effects of water at concentrations below the MIL-PRF-87252 specified acceptable limit of 50 ppm. The effect on the dielectric strength of using two different sparging gases for the removal of water, dry air or dry nitrogen, was irrelevant when compared at similar water contents. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Dielectrics & Electrical Insulation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRICS KW - ALKENES KW - REFRIGERANTS KW - WATER KW - ELECTRIC insulators & insulation KW - TEMPERATURE effect KW - PRESSURE KW - BREAKDOWN voltage KW - VISCOSITY N1 - Accession Number: 70234663; Source Information: 2/ 1/2011, Vol. 18 Issue 1, p295; Subject Term: DIELECTRICS; Subject Term: ALKENES; Subject Term: REFRIGERANTS; Subject Term: WATER; Subject Term: ELECTRIC insulators & insulation; Subject Term: TEMPERATURE effect; Subject Term: PRESSURE; Subject Term: BREAKDOWN voltage; Subject Term: VISCOSITY; Subject Term: ; Number of Pages: 0p; ; Document Type: Article; L3 - 10.1109/TDEI.2011.5704521 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=70234663&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - Rao, Xing AU - Hammack, Steve AU - Lee, Tonghun AU - Carter, Campbell AU - Matveev, Igor B. T1 - Correction to “Combustion Dynamics of Plasma-Enhanced Premixed and Nonpremixed Flames”. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2011/02//02/01/2011 Y1 - 2011/02//02/01/2011 VL - 39 IS - 2 M3 - Erratum SP - 822 EP - 822 SN - 00933813 KW - COMBUSTION KW - FLAME KW - PLASMA (Ionized gases) KW - PERIODICALS -- Articles KW - SCIENCE -- Periodicals N1 - Accession Number: 58006732; Source Information: 02/01/2011, Vol. 39 Issue 2, p822; Subject Term: COMBUSTION; Subject Term: FLAME; Subject Term: PLASMA (Ionized gases); Subject Term: PERIODICALS -- Articles; Subject Term: SCIENCE -- Periodicals; Subject Term: ; Number of Pages: 1p; ; Document Type: Erratum; L3 - 10.1109/TPS.2011.2106694 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=58006732&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 104991018 T1 - Association of provider scope of practice with successful transition for youth with special health care needs. AU - Nishikawa BR AU - Daaleman TP AU - Nageswaran S Y1 - 2011/02// N1 - Accession Number: 104991018. Language: English. Entry Date: 20110407. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Allied Health; Nursing; Peer Reviewed; Public Health; USA. Special Interest: Pediatric Care; Public Health. NLM UID: 9102136. KW - Scope of Practice KW - Continuity of Patient Care KW - Child, Disabled KW - Health Transition KW - Human KW - Surveys KW - Survey Research KW - Demography KW - Logistic Regression KW - Caregivers KW - Adolescence KW - Pearson's Correlation Coefficient KW - Chi Square Test KW - Descriptive Statistics KW - Male KW - Female KW - Odds Ratio KW - Confidence Intervals SP - 209 EP - 211 JO - Journal of Adolescent Health JF - Journal of Adolescent Health JA - J ADOLESC HEALTH VL - 48 IS - 2 CY - New York, New York PB - Elsevier Science AB - Abstract: Purpose: Youth with special health care needs (YSHCN) encounter unique challenges in the transition from pediatric to adult healthcare. Although discussing transition with healthcare providers can be beneficial, it is unclear whether the providers'' scope of practice (child-only vs. lifespan-oriented) drives these discussions. We examined the association between scope of practice and transition-related services. Methods: We used caregivers'' responses in the 2005–2006 National Survey of Children with Special Healthcare Needs. We compared transition outcomes for youth whose providers treated only children, and youth whose providers also treated adults (lifespan-oriented). Individual and household-level demographic factors were applied to logistic regression models. Results: Youth with lifespan-oriented providers were more likely than youth with child-only providers to have discussed changing health needs in adulthood (52% vs. 43%) and adult health insurance (24% vs. 21%). There was no difference in receiving encouragement toward self-responsibility (79% vs. 78%). These associations persisted after adjusting for demographics. Conclusions: YSHCN are more likely to report having discussed issues related to transition into adult healthcare if their providers treat adults as well as children. However, discussion involving adult health insurance in particular was lacking for all YSHCN. SN - 1054-139X AD - Epidemiology Consult Service, United States Air Force School of Aerospace Medicine, Brooks City-Base, Texas U2 - PMID: 21257122. DO - 10.1016/j.jadohealth.2010.06.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104991018&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Carrell, Scott E. AU - Hoekstra, Mark AU - West, James E. T1 - Does drinking impair college performance? Evidence from a regression discontinuity approach JO - Journal of Public Economics JF - Journal of Public Economics Y1 - 2011/02// VL - 95 IS - 1/2 M3 - Article SP - 54 EP - 62 SN - 00472727 AB - Abstract: This paper examines the effect of alcohol consumption on student achievement. To do so, we exploit the discontinuity in drinking at age 21 at a college in which the minimum legal drinking age is strictly enforced. We find that drinking causes significant reductions in academic performance, particularly for the highest-performing students. This suggests that the negative consequences of alcohol consumption extend beyond the narrow segment of the population at risk of more severe, low-frequency, outcomes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Public Economics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UNIVERSITIES & colleges KW - DRINKING of alcoholic beverages KW - ACADEMIC achievement KW - PUBLIC health KW - DRINKING age -- Law & legislation KW - EVIDENCE KW - POPULATION KW - ALCOHOL KW - Education KW - Public health N1 - Accession Number: 56496688; Carrell, Scott E. 1; Email Address: secarrell@ucdavis.edu; Hoekstra, Mark 2; Email Address: markhoek@pitt.edu; West, James E. 3; Email Address: jim.west@usafa.edu; Affiliations: 1: UC-Davis and NBER, United States; 2: University of Pittsburgh, 4714 WW Posvar Hall, Pittsburgh, PA 15260, United States; 3: Department of Economics and Geosciences, United States Air Force Academy, CO 80840, United States; Issue Info: Feb2011, Vol. 95 Issue 1/2, p54; Thesaurus Term: UNIVERSITIES & colleges; Subject Term: DRINKING of alcoholic beverages; Subject Term: ACADEMIC achievement; Subject Term: PUBLIC health; Subject Term: DRINKING age -- Law & legislation; Subject Term: EVIDENCE; Subject Term: POPULATION; Subject Term: ALCOHOL; Author-Supplied Keyword: Education; Author-Supplied Keyword: Public health; NAICS/Industry Codes: 325193 Ethyl Alcohol Manufacturing; NAICS/Industry Codes: 722410 Drinking Places (Alcoholic Beverages); NAICS/Industry Codes: 525120 Health and Welfare Funds; NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jpubeco.2010.08.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=56496688&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 104841004 T1 - In vitro investigation of the biological effects associated with human dermal fibroblasts exposed to 2.52 THz radiation. AU - Wilmink GJ AU - Rivest BD AU - Roth CC AU - Ibey BL AU - Payne JA AU - Cundin LX AU - Grundt JE AU - Peralta X AU - Mixon DG AU - Roach WP Y1 - 2011/02// N1 - Accession Number: 104841004. Language: English. Entry Date: 20110729. Revision Date: 20150711. Publication Type: Journal Article; research. Journal Subset: Biomedical; USA. Special Interest: Perioperative Care. NLM UID: 8007168. KW - Dermis -- Radiation Effects KW - Fibroblasts -- Radiation Effects KW - Radiation, Non-Ionizing -- Adverse Effects KW - Adult KW - Cell Physiology -- Radiation Effects KW - DNA KW - Dose-Response Relationship, Radiation KW - Proteins KW - Human KW - Hyperthermia, Induced -- Adverse Effects KW - Mutagenicity Tests KW - Polymerase Chain Reaction KW - Radiometry KW - Temperature SP - 152 EP - 163 JO - Lasers in Surgery & Medicine JF - Lasers in Surgery & Medicine JA - LASERS SURG MED VL - 43 IS - 2 CY - Hoboken, New Jersey PB - John Wiley & Sons, Inc. SN - 0196-8092 AD - 711th Human Performance Wing, Radio Frequency Radiation Branch, Air Force Research Laboratory, Brooks City-Base, Texas; National Academy of Sciences, NRC Research Associate Program, Washington D.C.. gerald.wilmink@brooks.af.mil. U2 - PMID: 20740621. DO - 10.1002/lsm.20960 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104841004&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 105002401 T1 - Influence of motion smear on visual acuity in simulated infantile nystagmus. AU - Chung ST AU - Lafrance MW AU - Bedell HE AU - Chung, Susana T L AU - LaFrance, Martin W AU - Bedell, Harold E Y1 - 2011/02//2011 Feb N1 - Accession Number: 105002401. Language: English. Entry Date: 20110617. Revision Date: 20161125. Publication Type: journal article; research. Journal Subset: Biomedical; Peer Reviewed; USA. Grant Information: R01-EY05068/EY/NEI NIH HHS/United States. NLM UID: 8904931. KW - Eye Movements KW - Retina -- Physiopathology KW - Nystagmus, Pathologic KW - Nystagmus, Pathologic -- Physiopathology KW - Visual Acuity KW - Adult KW - Human KW - Models, Biological KW - Time Factors SP - 200 EP - 207 JO - Optometry & Vision Science JF - Optometry & Vision Science JA - OPTOM VISION SCI VL - 88 IS - 2 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - Purpose: In persons with infantile nystagmus (IN), visual acuity correlates with the duration of the foveation period of the nystagmus waveform, i.e., when the retinal image is on or near the fovea and moves with low velocity. In this study, we asked how acuity is affected by the non-foveating phases of the nystagmus waveform, when the velocity of retinal image motion is substantially higher.Methods: Visual acuity was measured in three normal observers for high contrast, four-orientation single T-stimuli, presented during image motion that simulated either the whole jerk-IN waveform (whole-waveform) or only the foveation periods of the IN waveform (foveation-only). Simulated foveation durations ranged from 20 to 120 ms. For both motion waveforms, we displayed the acuity target for different number of cycles to examine whether acuity benefits from multiple presentations of the stimulus.Results: As expected, visual acuity improves with longer simulated foveation durations in both the whole-waveform and foveation-only conditions. Acuity is consistently better (by ∼0.1 logarithm of the minimum angle of resolution) in the foveation-only than the whole-waveform condition, indicating that the high-velocity image motion during the simulated IN waveform has a detrimental effect. This difference in acuity between the two waveform conditions increases with the number of cycles, apparently because summation occurs across cycles in the foveation-only condition but not in the whole-waveform condition.Conclusions: In normal observers, visual acuity in the presence of a simulated nystagmus waveform is limited not only by the duration of the foveation periods, but also by the non-foveating phases of the waveform. However, because persons with IN report little or no motion smear in association with their nystagmus, it remains unclear whether the rapid retinal image motion during the non-foveating phases of the nystagmus waveform generates a similar degradation of visual acuity in IN. SN - 1040-5488 AD - School of Optometry, University of California, Berkeley, Berkeley, California, USA AD - OD, PhD, FAAO tPhD, FAAO School of Optometry, University of California, Berkeley, Berkeley, California (STLC), Air Force Research Laboratory, Brooks City-Base, Texas (MWL), and College of Optometry, University of Houston, Houston, Texas (HEB). U2 - PMID: 21200353. DO - 10.1097/OPX.0b013e31820846dd UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105002401&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2011-01546-017 AN - 2011-01546-017 AU - Nishikawa, Brett R. AU - Daaleman, Timothy P. AU - Nageswaran, Savithri T1 - Association of provider scope of practice with successful transition for youth with special health care needs. JF - Journal of Adolescent Health JO - Journal of Adolescent Health JA - J Adolesc Health Y1 - 2011/02// VL - 48 IS - 2 SP - 209 EP - 211 CY - Netherlands PB - Elsevier Science SN - 1054-139X AD - Nishikawa, Brett R., Epidemiology Consult Service, United States Air Force School of Aerospace Medicine, USAFSAM/PHR, 2513 Kennedy Circle, Bldg 180, Brooks City-Base, TX, US, 78235 N1 - Accession Number: 2011-01546-017. PMID: 21257122 Other Journal Title: Journal of Adolescent Health Care. Partial author list: First Author & Affiliation: Nishikawa, Brett R.; Epidemiology Consult Service, United States Air Force School of Aerospace Medicine, Brooks City-Base, TX, US. Release Date: 20110328. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Health Service Needs; Pediatrics; Primary Health Care; Special Needs. Minor Descriptor: Life Changes. Classification: Health & Mental Health Services (3370). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Childhood (birth-12 yrs) (100); School Age (6-12 yrs) (180); Adolescence (13-17 yrs) (200). Tests & Measures: National Survey of Children with Special Health Care Needs. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 3. Issue Publication Date: Feb, 2011. Publication History: Accepted Date: Jun 16, 2010; First Submitted Date: Mar 3, 2010. Copyright Statement: Elsevier Inc. 2011. AB - Purpose: Youth with special health care needs (YSHCN) encounter unique challenges in the transition from pediatric to adult healthcare. Although discussing transition with healthcare providers can be beneficial, it is unclear whether the providers' scope of practice (child-only vs. lifespan-oriented) drives these discussions. We examined the association between scope of practice and transition-related services. Methods: We used caregivers' responses in the 2005–2006 National Survey of Children with Special Healthcare Needs. We compared transition outcomes for youth whose providers treated only children, and youth whose providers also treated adults (lifespan-oriented). Individual and household-level demographic factors were applied to logistic regression models. Results: Youth with lifespan-oriented providers were more likely than youth with child-only providers to have discussed changing health needs in adulthood (52% vs. 43%) and adult health insurance (24% vs. 21%). There was no difference in receiving encouragement toward self-responsibility (79% vs. 78%). These associations persisted after adjusting for demographics. Conclusions: YSHCN are more likely to report having discussed issues related to transition into adult healthcare if their providers treat adults as well as children. However, discussion involving adult health insurance in particular was lacking for all YSHCN. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - successful transition KW - special health care needs KW - pediatrics KW - adult healthcare KW - 2011 KW - Health Service Needs KW - Pediatrics KW - Primary Health Care KW - Special Needs KW - Life Changes KW - 2011 DO - 10.1016/j.jadohealth.2010.06.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-01546-017&site=ehost-live&scope=site UR - brett.nishikawa@brooks.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Lai, Shu T. AU - Cooke, David AU - Payan, Denis AU - Hilgers, Alain AU - Cho, Mengu AU - Garrett, Henry AU - Ferguson, Dale AU - Roussel, Jean-Francois AU - Wheelock, Adrian T1 - Announcing the IEEE Transactions on Plasma Science Special Issue on Spacecraft Charging Technology January 2012. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2011/01/15/ Y1 - 2011/01/15/ VL - 39 IS - 1 M3 - Article SP - 628 EP - 628 SN - 00933813 KW - SPECIAL issues of periodicals KW - SPACE vehicles -- Electrostatic charging KW - PUBLICATIONS KW - RESEARCH KW - ELECTRONS KW - ELECTRONICS KW - PLASMA (Ionized gases) N1 - Accession Number: 57255090; Source Information: 01/15/2011, Vol. 39 Issue 1, p628; Subject Term: SPECIAL issues of periodicals; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: PUBLICATIONS; Subject Term: RESEARCH; Subject Term: ELECTRONS; Subject Term: ELECTRONICS; Subject Term: PLASMA (Ionized gases); Subject Term: ; Number of Pages: 1p; ; Document Type: Article; L3 - 10.1109/TPS.2010.2097490 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=57255090&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2010-22413-001 AN - 2010-22413-001 AU - Varga, János AU - Domokos, Ágnes AU - Barna, István AU - Jankord, Ryan AU - Bagdy, György AU - Zelena, Dóra T1 - Lack of vasopressin does not prevent the behavioural and endocrine changes induced by chronic unpredictable stress. JF - Brain Research Bulletin JO - Brain Research Bulletin JA - Brain Res Bull Y1 - 2011/01/15/ VL - 84 IS - 1 SP - 45 EP - 52 CY - Netherlands PB - Elsevier Science SN - 0361-9230 SN - 1873-2747 AD - Zelena, Dóra, Institute of Experimental Medicine, Hungarian Academy of Sciences, Szigony 43, 1083, Budapest, Hungary N1 - Accession Number: 2010-22413-001. PMID: 20946941 Partial author list: First Author & Affiliation: Varga, János; Institute of Experimental Medicine, Hungarian Academy of Sciences, Budapest, Hungary. Release Date: 20101101. Correction Date: 20170116. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Behavior Change; Chronic Stress; Hypothalamic Pituitary Adrenal Axis; Vasopressin. Minor Descriptor: Endocrine System; Hyperkinesis; Major Depression; Rats. Classification: Psychophysiology (2560). Population: Animal (20); Male (30); Female (40). Tests & Measures: Maze Test; Forced Swim Test. Methodology: Empirical Study; Field Study; Quantitative Study. References Available: Y. Page Count: 8. Issue Publication Date: Jan 15, 2011. Publication History: First Posted Date: Oct 12, 2010; Accepted Date: Sep 10, 2010; Revised Date: Sep 2, 2010; First Submitted Date: Dec 22, 2009. Copyright Statement: All rights reserved. Elsevier Inc. 2010. AB - Vasopressin (VP) plays an important role in hypothalamo–pituitary–adrenal (HPA) axis regulation and in stress-related disorders. Our previous studies confirmed the role of VP in acute situations, where VP-deficient Brattleboro rats had less depression-like behaviour compared to animals that express VP. In this study, we test the hypothesis that VP-deficient rats are more resistant to the development of chronic HPA axis hyperactivity and depression-like symptoms after chronic unpredictable stress (CUS). Male VP-deficient Brattleboro rats were compared to their heterozygous littermates (controls). CUS consisted of different mild stimuli for 5 weeks. Elevated plus maze and forced swim test were used for behavioural characterization, while organs and blood for HPA axis parameters were collected at the end of the experiment. In controls, CUS resulted in the development of chronic stress state characterized by typical somatic (body weight reduction, thymus involution) and endocrine changes (resting plasma ACTH and corticosterone elevation and POMC mRNA elevation in anterior lobe of the pituitary). Floating time in the forced swim test was enhanced together with reduced open arm entries on elevated plus maze and a reduction in daily food intake. Unexpectedly, the lack of VP did not alter the effect of CUS on the somatic and behavioural measures, but only prevented CUS-induced corticosterone changes. In conclusion, lifelong VP-deficiency has a positive effect on corticosterone elevation following CUS but does not affect the behavioural consequences of CUS. It is likely that the interplay of several related factors, rather than an alteration in a single neuropeptide, modulates behaviour and disease pathogenesis. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - vasopressin KW - behavior changes KW - endocrine changes KW - chronic unpredictable stress KW - hypothalamo-pituitary-adrenal axis KW - depression-like symptoms KW - hyperactivity KW - 2011 KW - Behavior Change KW - Chronic Stress KW - Hypothalamic Pituitary Adrenal Axis KW - Vasopressin KW - Endocrine System KW - Hyperkinesis KW - Major Depression KW - Rats KW - 2011 U1 - Sponsor: OTKA. Grant: NN71629. Recipients: No recipient indicated DO - 10.1016/j.brainresbull.2010.09.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-22413-001&site=ehost-live&scope=site UR - zelena.dora@koki.hu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Sejvar, James J. AU - Kohl, Katrin S. AU - Gidudu, Jane AU - Amato, Anthony AU - Bakshi, Nandini AU - Baxter, Roger AU - Burwen, Dale R. AU - Cornblath, David R. AU - Cleerbout, Jan AU - Edwards, Kathryn M. AU - Heininger, Ulrich AU - Hughes, Richard AU - Khuri-Bulos, Najwa AU - Korinthenberg, Rudolf AU - Law, Barbara J. AU - Munro, Ursula AU - Maltezou, Helena C. AU - Nell, Patricia AU - Oleske, James AU - Sparks, Robert T1 - Guillain–Barré syndrome and Fisher syndrome: Case definitions and guidelines for collection, analysis, and presentation of immunization safety data JO - Vaccine JF - Vaccine Y1 - 2011/01/10/ VL - 29 IS - 3 M3 - Article SP - 599 EP - 612 SN - 0264410X KW - Acute inflammatory demyelinating polyradiculoneuropathy KW - Adverse event KW - Case definition KW - Fisher syndrome KW - Guidelines KW - Guillain–Barré syndrome KW - Immunization KW - Neuropathy N1 - Accession Number: 57078773; Sejvar, James J. 1; Email Address: secretariat@brightoncollaboration.org; Kohl, Katrin S. 1; Gidudu, Jane 1; Amato, Anthony 2; Bakshi, Nandini 3; Baxter, Roger 3; Burwen, Dale R. 4; Cornblath, David R. 5; Cleerbout, Jan 6; Edwards, Kathryn M. 7; Heininger, Ulrich 8; Hughes, Richard 9; Khuri-Bulos, Najwa 10; Korinthenberg, Rudolf 11; Law, Barbara J. 12; Munro, Ursula 13; Maltezou, Helena C. 14; Nell, Patricia 15; Oleske, James 16; Sparks, Robert 17; Affiliations: 1: Centers for Disease Control and Prevention, Atlanta, GA, USA; 2: Department of Neurology, Division of Neuromuscular Disease, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA, USA; 3: NCK Kaiser Permanente, Oakland, CA, USA; 4: Food and Drug Administration, Rockville, MD, USA; 5: John Hopkins University School of Medicine, Baltimore, MD, USA; 6: GlaxoSmithKline Biologicals, Rixensart, Belgium; 7: Vanderbilt University School of Medicine, Nashville, TN, USA; 8: University Children's Hospital, Basel, Switzerland; 9: King's College London School of Medicine, London, UK; 10: Jordan University Hospital, Amman, Jordan; 11: University Hospital Freiburg, Freiburg, Germany; 12: Public Health Agency of Canada, Ottawa, Ontario, Canada; 13: Sanofi Pasteur MSD GmbH, Walldorf, Germany; 14: Hellenic Center for Disease Control and Prevention, Athens, Greece; 15: Airforce Reserve Command, United States Air Force, Sturgeon Bay, WI, USA; 16: University Hospital, New Jersey Medical School, Morris Plains, NJ, USA; 17: Vanderbilt University Medical Center, Nashville, TN, USA; Issue Info: Jan2011, Vol. 29 Issue 3, p599; Author-Supplied Keyword: Acute inflammatory demyelinating polyradiculoneuropathy; Author-Supplied Keyword: Adverse event; Author-Supplied Keyword: Case definition; Author-Supplied Keyword: Fisher syndrome; Author-Supplied Keyword: Guidelines; Author-Supplied Keyword: Guillain–Barré syndrome; Author-Supplied Keyword: Immunization; Author-Supplied Keyword: Neuropathy; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.vaccine.2010.06.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=57078773&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Lucas, Pauline M. AU - Morgan, Oliver W. AU - Gibbons, Thomas F. AU - Guerrero, Alicia C. AU - Maupin, Genny M. AU - Butler, Jenny L. AU - Canas, Linda C. AU - Fonseca, Vincent P. AU - Olsen, Sonja J. AU - MacIntosh, Victor H. T1 - Diagnosis of 2009 Pandemic Influenza A (pH1N1) and Seasonal Influenza Using Rapid Influenza Antigen Tests, San Antonio, Texas, April–June 2009. JO - Clinical Infectious Diseases JF - Clinical Infectious Diseases Y1 - 2011/01/02/ VL - 52 IS - suppl_1 M3 - Article SP - S116 EP - S122 SN - 10584838 AB - Clinicians frequently use influenza rapid antigen tests for diagnostic testing. We tested nasal wash samples from 1 April to 7 June 2009 from 1538 patients using the QuickVue Influenza A+B (Quidel) rapid influenza antigen test and compared the results with real-time reverse transcription polymerase chain reaction (rRT-PCR) assay (gold standard). The prevalence of 2009 pandemic influenza A (pH1N1) was 1.98%, seasonal influenza type A .87%, and seasonal influenza type B 2.07%. The sensitivity and specificity of the rapid test for pH1N1 was 20% (95% CI, 8–39) and 99% (95% CI, 98–99), for seasonal influenza type A 15% (95% CI, 2–45) and 99% (95% CI, 98–99), and for influenza type B was 31% (95% CI, 9–61) and 99% (95% CI, 98–99.7). Rapid influenza antigen tests were of limited use at a time when the prevalence of pH1N1 and seasonal influenza in the United States was low. Clinicians should instead rely on clinical impression and laboratory diagnosis by rRT-PCR. [ABSTRACT FROM AUTHOR] AB - Copyright of Clinical Infectious Diseases is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Antigens KW - Influenza -- Diagnosis KW - H1N1 (2009) influenza KW - Seasonal influenza KW - Polymerase chain reaction KW - San Antonio (Tex.) KW - Texas N1 - Accession Number: 83182099; Lucas, Pauline M. 1; Morgan, Oliver W. 2; Gibbons, Thomas F. 1; Guerrero, Alicia C. 1,3; Maupin, Genny M. 1,4; Butler, Jenny L. 1,3; Canas, Linda C. 1; Fonseca, Vincent P. 5; Olsen, Sonja J. 2; MacIntosh, Victor H. 1; Affiliations: 1: Department of Defense Global Laboratory-based Influenza Surveillance Program, United States Air Force School of Aerospace Medicine, Brooks City-Base, San Antonio, Texas; 2: Division of Preparedness and Emerging Infections, Centers for Disease Control and Prevention, Atlanta, Georgia; 3: Conceptual Mind Works, San Antonio, Texas; 4: Oak Ridge Institute for Science and Education, Oak Ridge, Tennessee; 5: Texas Department of State Health Services, Austin, Texas; Issue Info: 2011, Vol. 52 Issue suppl_1, pS116; Thesaurus Term: Antigens; Subject Term: Influenza -- Diagnosis; Subject Term: H1N1 (2009) influenza; Subject Term: Seasonal influenza; Subject Term: Polymerase chain reaction; Subject: San Antonio (Tex.); Subject: Texas; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; NAICS/Industry Codes: 325414 Biological Product (except Diagnostic) Manufacturing; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=83182099&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 104841343 T1 - Differentiating tower of hanoi performance: interactive effects of psychopathic tendencies, impulsive response styles, and modality. AU - Salnaitis CL AU - Baker CA AU - Holland J AU - Welsh M Y1 - 2011/01// N1 - Accession Number: 104841343. Language: English. Entry Date: 20110708. Revision Date: 20150711. Publication Type: Journal Article; research. Journal Subset: Biomedical; Europe; UK & Ireland. Special Interest: Psychiatry/Psychology. NLM UID: 9507620. KW - Antisocial Personality Disorder -- Psychosocial Factors KW - Diagnosis, Computer Assisted -- Methods KW - Behavior KW - Neuropsychological Tests KW - Psychomotor Performance KW - Adolescence KW - Adult KW - Mental Processes KW - Female KW - Human KW - Male KW - Middle Age KW - Personality Assessment SP - 37 EP - 46 JO - Applied Neuropsychology JF - Applied Neuropsychology JA - APPL NEUROPSYCHOL VL - 18 IS - 1 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd SN - 0908-4282 AD - Department of Behavioral Science and Leadership, United States Air Force Academy, Colorado. U2 - PMID: 21390899. DO - 10.1080/09084282.2010.523381 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104841343&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Biffinger, Justin C. AU - Fitzgerald, Lisa A. AU - Ray, Ricky AU - Little, Brenda J. AU - Lizewski, Stephen E. AU - Petersen, Emily R. AU - Ringeisen, Bradley R. AU - Sanders, Wesley C. AU - Sheehan, Paul E. AU - Pietron, Jeremy J. AU - Baldwin, Jeffrey W. AU - Nadeau, Lloyd J. AU - Johnson, Glenn R. AU - Ribbens, Meghann AU - Finkel, Steven E. AU - Nealson, Kenneth H. T1 - The utility of Shewanella japonica for microbial fuel cells JO - Bioresource Technology JF - Bioresource Technology Y1 - 2011/01// VL - 102 IS - 1 M3 - Article SP - 290 EP - 297 SN - 09608524 AB - Abstract: Shewanella-containing microbial fuel cells (MFCs) typically use the fresh water wild-type strain Shewanella oneidensis MR-1 due to its metabolic diversity and facultative oxidant tolerance. However, S. oneidensis MR-1 is not capable of metabolizing polysaccharides for extracellular electron transfer. The applicability of Shewanella japonica (an agar-lytic Shewanella strain) for power applications was analyzed using a diverse array of carbon sources for current generation from MFCs, cellular physiological responses at an electrode surface, biofilm formation, and the presence of soluble extracellular mediators for electron transfer to carbon electrodes. Critically, air-exposed S. japonica utilizes biosynthesized extracellular mediators for electron transfer to carbon electrodes with sucrose as the sole carbon source. [ABSTRACT FROM AUTHOR] AB - Copyright of Bioresource Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Polysaccharides KW - Shewanella KW - Microbial fuel cells KW - Carbohydrates KW - Sucrose KW - Charge exchange KW - Carbon electrodes KW - Bacteria -- Metabolism KW - Carbohydrate KW - Mediators KW - Microbial fuel cell N1 - Accession Number: 54101089; Biffinger, Justin C. 1; Email Address: justin.biffinger@nrl.navy.mil; Fitzgerald, Lisa A. 1; Ray, Ricky 2; Little, Brenda J. 2; Lizewski, Stephen E. 1; Petersen, Emily R. 3; Ringeisen, Bradley R. 1; Sanders, Wesley C. 1; Sheehan, Paul E. 1; Pietron, Jeremy J. 1; Baldwin, Jeffrey W. 4; Nadeau, Lloyd J. 5; Johnson, Glenn R. 5; Ribbens, Meghann 6; Finkel, Steven E. 6; Nealson, Kenneth H. 7; Affiliations: 1: Chemistry Division, US Naval Research Laboratory, 4555 Overlook Avenue, SW, Washington, DC 20375, USA; 2: Oceanography Division, US Naval Research Laboratory, Bldg 1009, John C. Stennis Space Center, MS 39529, USA; 3: Nova Research Inc., 1900 Elkin St., Suite 230, Alexandria, VA 22308, USA; 4: Acoustics Division, US Naval Research Laboratory, 4555 Overlook Avenue, SW, Washington, DC 20375, USA; 5: Microbiology & Applied Biochemistry Division, Air Force Research Laboratory, 139 Barnes Drive, Suite #2, Tyndall AFB, FL 32403, USA; 6: Molecular and Computational Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA 90089-2910, USA; 7: Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089-0740, USA; Issue Info: Jan2011, Vol. 102 Issue 1, p290; Thesaurus Term: Polysaccharides; Subject Term: Shewanella; Subject Term: Microbial fuel cells; Subject Term: Carbohydrates; Subject Term: Sucrose; Subject Term: Charge exchange; Subject Term: Carbon electrodes; Subject Term: Bacteria -- Metabolism; Author-Supplied Keyword: Carbohydrate; Author-Supplied Keyword: Mediators; Author-Supplied Keyword: Microbial fuel cell; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.biortech.2010.06.078 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=54101089&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - CHAP ID - 2010-06007-004 AN - 2010-06007-004 AU - Gunzelmann, Glenn AU - Moore, L. Richard AU - Gluck, Kevin A. AU - Van Dongen, Hans P. A. AU - Dinges, David F. ED - Ackerman, Phillip L. ED - Ackerman, Phillip L., (Ed) T1 - Fatigue in sustained attention: Generalizing mechanisms for time awake to time on task. T2 - Cognitive fatigue: Multidisciplinary perspectives on current research and future applications. T3 - Decade of Behavior/Science Conference Y1 - 2011/// SP - 83 EP - 101 CY - Washington, DC, US PB - American Psychological Association SN - 1-4338-0839-0 SN - 978-1-4338-0839-5 N1 - Accession Number: 2010-06007-004. Partial author list: First Author & Affiliation: Gunzelmann, Glenn; Air Force Research Laboratory–RHAC, Mesa, AZ, US. Release Date: 20100809. Correction Date: 20151221. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 1-4338-0839-0, Hardcover; 978-1-4338-0839-5, Hardcover. Language: English. Grant Information: Van Dongen, Hans P. A. Major Descriptor: Cognitive Ability; Fatigue; Performance; Sustained Attention; Time On Task. Minor Descriptor: Energy Expenditure; Vigilance; Wakefulness. Classification: Cognitive Processes (2340). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). Methodology: Empirical Study; Mathematical Model; Quantitative Study. References Available: Y. Page Count: 19. AB - Time on task and time awake are two important influences on human cognitive performance. Both extended periods of wakefulness and extended periods of effort on a single task lead to performance declines. Of particular interest in the present work is the time-on-task effect or vigilance decrement, which refers to the progressively worse performance that is observed on vigilance tasks as the duration of those tasks increases. In the research presented here, we ask whether performance changes associated with time on task can be simulated using the same computational mechanisms that replicate changes in cognitive performance associated with extended sleep deprivation. Such correspondence would raise the possibility that similar neural mechanisms underlie both effects—a possibility addressed in the Conclusions section (see also Chapter 6, this volume). To situate this issue, we investigate human performance on a task measuring attentional vigilance, which refers to the ability to maintain focused attention on a task and respond rapidly to repetitive stimuli. The specific task investigated here is the Psychomotor Vigilance Task (PVT). Performance on the PVT is sensitive to both time awake and circadian rhythms, providing an assay of overall cognitive functioning, or behavioral alertness. As alertness declines, false starts, lapses, and nonresponses all increase in probability and the median reaction time of the remaining alert responses increases. Our research efforts involving the PVT have focused on developing computational accounts of these performance changes. We developed a computational model of the PVT and integrated mechanisms to account for changes in cognitive processing resulting from time awake and circadian rhythms. The model produces behavior that is in line with human performance and tracks changes that occur over the course of 88 hours of continuous wakefulness. The focus of the current effort is to evaluate the generalizability of the explanatory mechanisms we previously proposed in the context of the effects of sleep deprivation, now in the context of the effects of time on task. Questions remain regarding whether the impacts of these distinct processes on the general construct of fatigue are similar or different and whether the same computational mechanisms can serve to explain them jointly. Throughout the chapter, we describe our methodological approach, computational model, and mechanisms for fatigue in more detail. Then, we provide an evaluation of whether the mechanisms we have proposed to account for the effects of sleepiness on cognitive processing generalize to time-on-task phenomena. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - fatigue KW - sustained attention KW - time awake KW - time on task KW - cognitive performance KW - wakefulness KW - effort KW - vigilance decrement KW - performance changes KW - Psychomotor Vigilance Task KW - 2011 KW - Cognitive Ability KW - Fatigue KW - Performance KW - Sustained Attention KW - Time On Task KW - Energy Expenditure KW - Vigilance KW - Wakefulness KW - 2011 U1 - Sponsor: Air Force Research Laboratory. Other Details: Warfighter Readiness Research Division. Recipients: No recipient indicated U1 - Sponsor: Air Force Office of Scientific Research (AFOSR). Grant: 04HE02COR; 07HE01COR; F49620-95-1-0388; F49620-00-1-0266; FA-9550-09-1-0136. Recipients: Van Dongen, Hans P. A. U1 - Sponsor: National Institutes of Health, US. Grant: RR00040. Recipients: No recipient indicated DO - 10.1037/12343-004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-06007-004&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2010-06007-013 AN - 2010-06007-013 AU - Chaiken, Scott R. AU - Harville, Donald L. AU - Harrison, Richard AU - Fischer, Joseph AU - Fisher, Dion AU - Whitmore, Jeff ED - Ackerman, Phillip L. ED - Ackerman, Phillip L., (Ed) T1 - Fatigue impact on teams versus individuals during complex tasks. T2 - Cognitive fatigue: Multidisciplinary perspectives on current research and future applications. T3 - Decade of Behavior/Science Conference Y1 - 2011/// SP - 273 EP - 290 CY - Washington, DC, US PB - American Psychological Association SN - 1-4338-0839-0 SN - 978-1-4338-0839-5 N1 - Accession Number: 2010-06007-013. Partial author list: First Author & Affiliation: Chaiken, Scott R.; Air Force Research Laboratory, Brooks City-Base, TX, US. Release Date: 20100809. Correction Date: 20151221. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 1-4338-0839-0, Hardcover; 978-1-4338-0839-5, Hardcover. Language: English. Major Descriptor: Fatigue; Group Performance; Task Complexity; Teams. Minor Descriptor: Performance; Working Conditions. Classification: Industrial & Organizational Psychology (3600). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 18. AB - In this chapter, we assess some moderating effects of task choices and their testing context for fatigue impact. In particular, we are broadly interested in whether teams fatigue differently from individuals when performing similar tasks. This interest has a pragmatic basis in maintaining work environments that often consist of teams doing the work. Very little is known about the potential for fatigue moderation from team performance contexts (Whitmore, Chaiken, Harrison, & Harville, 2007). So we have observed, over the course of two studies, performers in both a team and a solo air-war battle manager task, Command, Control, and Communications, Simulation, Training, and Research System (C3STARS; Tessier, 2006). Unfortunately, comparing team performance meaningfully with individual performance, not to mention assessing differential effects of fatigue on the same, is not an easy endeavor. Significant methodology has to be developed, and the contributions of confounds to our effects of interest have to be better understood. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - fatigue impact KW - teams KW - individuals KW - complex tasks KW - task choices KW - work environments KW - team performance KW - individual performance KW - 2011 KW - Fatigue KW - Group Performance KW - Task Complexity KW - Teams KW - Performance KW - Working Conditions KW - 2011 U1 - Sponsor: Biobehavioral Performance Branch. Grant: 7757P907; 7757P918. Recipients: No recipient indicated DO - 10.1037/12343-013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-06007-013&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2010-06007-015 AN - 2010-06007-015 AU - Hockey, G. Robert J. AU - Van Dongen, Hans P. A. AU - Faber, Léon G. AU - Ackerman, Phillip L. AU - Chaiken, Scott R. AU - Kanfer, Ruth AU - Matthews, Gerald AU - van der Linden, Dimitri AU - Sonnentag, Sabine AU - Gunzelmann, Glenn ED - Ackerman, Phillip L. ED - Ackerman, Phillip L., (Ed) T1 - Conclusion: Open panel discussion. T2 - Cognitive fatigue: Multidisciplinary perspectives on current research and future applications. T3 - Decade of Behavior/Science Conference Y1 - 2011/// SP - 309 EP - 319 CY - Washington, DC, US PB - American Psychological Association SN - 1-4338-0839-0 SN - 978-1-4338-0839-5 N1 - Accession Number: 2010-06007-015. Partial author list: First Author & Affiliation: Hockey, G. Robert J.; Department of Psychology, University of Sheffield, Sheffield, England. Release Date: 20100809. Correction Date: 20151221. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 1-4338-0839-0, Hardcover; 978-1-4338-0839-5, Hardcover. Language: English. Major Descriptor: Cognitive Processes; Fatigue. Minor Descriptor: Scientific Communication. Classification: Cognitive Processes (2340). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 11. AB - This concluding chapter presents comments from an open discussion regarding cognitive fatigue at the conference held at Georgia Institute of Technology, Atlanta, in May 2009. In the final session of the conference, an open discussion was held regarding what had been learned at the conference and what challenges were foreseen for the field. The speakers were also asked to describe the most important questions for the field and the most promising avenues for future research and applications in cognitive fatigue. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - open panel discussion KW - cognitive fatigue KW - final session KW - conference KW - 2011 KW - Cognitive Processes KW - Fatigue KW - Scientific Communication KW - 2011 DO - 10.1037/12343-015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-06007-015&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2010-26075-015 AN - 2010-26075-015 AU - Wakin, Malham M. ED - Qualls, Sara H. ED - Kasl-Godley, Julia E. ED - Qualls, Sara H., (Ed) ED - Kasl-Godley, Julia E., (Ed) T1 - Creating ethics conversations in community. T2 - End-of-life issues, grief, and bereavement: What clinicians need to know. T3 - Wiley series in clinical geropsychology Y1 - 2011/// SP - 285 EP - 293 CY - Hoboken, NJ, US PB - John Wiley & Sons Inc SN - 978-0-470-40693-9 SN - 978-0-470-88105-7 SN - 978-0-470-88112-5 SN - 978-0-470-88113-2 N1 - Accession Number: 2010-26075-015. Partial author list: First Author & Affiliation: Wakin, Malham M.; US Air Force Academy, Colorado Springs, CO, US. Release Date: 20110214. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-0-470-40693-9, Hardcover; 978-0-470-88105-7, PDF; 978-0-470-88112-5, Electronic; 978-0-470-88113-2, Electronic. Language: English. Major Descriptor: Community Services; Decision Making; Palliative Care; Professional Ethics; Health Care Policy. Minor Descriptor: Terminally Ill Patients. Classification: Community & Social Services (3373). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). Page Count: 9. AB - This chapter discusses the creation of the Pikes Peak Forum for Health Care Ethics, an action group devoted to developing a set of community guidelines for assisting decision making at the end of life. Monthly meetings and discussions eventually led to the development of a set of 11 basic ethical principles and eight guidelines. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - health care ethics KW - community groups KW - Pikes Peak Forum for Health Care Ethics KW - community guidelines KW - decision making KW - end-of-life decision making KW - 2011 KW - Community Services KW - Decision Making KW - Palliative Care KW - Professional Ethics KW - Health Care Policy KW - Terminally Ill Patients KW - 2011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-26075-015&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Bledsoe, Michael L. AU - Pinkerton, Lynne E. AU - Silver, Sharon AU - Deddens, James A. AU - Biagini, Raymond E. T1 - Thyroxine and Free Thyroxine Levels in Workers Occupationally Exposed to Inorganic Lead. JO - Environmental Health Insights JF - Environmental Health Insights Y1 - 2011/01// IS - 5 M3 - Article SP - 55 EP - 61 PB - Libertas Academica Ltd. SN - 11786302 AB - Background: The effects of lead exposure on thyroid function are unclear. Methods: Serum thyroxine (T4) was evaluated among 137 lead-exposed workers and 83 non-exposed workers. Free thyroxine (FT4) was evaluated among a subset of these workers. Exposure metrics included blood lead level (BLL), which reflects recent exposure, zinc protoporphyrin (ZPP), a marker of intermediate-duration lead exposure, exposure duration, and estimated cumulative exposure. Multiple linear regression results were adjusted for age, race, and current smoking status. Results: Mean BLLs were 38.9 µg/dL in lead exposed workers and 2.1 µg/dL in non-exposed workers. The adjusted mean T4 and FT4 concentrations among exposed and non-exposed workers were similar. While T4 was not significantly related to any of the exposure metrics, FT4 was inversely related to the logged values of both exposure duration and cumulative exposure, but not to ZPP or BLL. Conclusions: The findings suggest that FT4 levels may be related to long-term lead exposure. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Health Insights is the property of Libertas Academica Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Lead KW - Occupational hazards KW - Data analysis KW - Environmental exposure KW - Chi-squared test KW - Labor supply KW - Probability theory KW - Questionnaires KW - Research -- Finance KW - Self-evaluation KW - Statistics KW - T-test (Statistics) KW - Thyroxine KW - Multiple regression analysis KW - Cross-sectional method KW - Data analysis -- Software KW - Descriptive statistics KW - United States KW - free thyroxine KW - lead KW - occupational exposure KW - thyroxine N1 - Accession Number: 73221703; Bledsoe, Michael L. 1; Email Address: michael.bledsoe@us.af.mil; Pinkerton, Lynne E. 2; Silver, Sharon; Deddens, James A. 2; Biagini, Raymond E. 3; Affiliations: 1: Occupational Medicine Services, 78th Aerospace Medicine Squadron, 78th Medical Group, United States Air Force, Robins Air Force Base, GA, USA; 2: Division of Surveillance, Hazard Evaluations and Field Studies, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Cincinnati, OH, USA; 3: Division of Applied Research and Technology, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Cincinnati, OH, USA; Issue Info: 2011, Issue 5, p55; Thesaurus Term: Lead; Thesaurus Term: Occupational hazards; Thesaurus Term: Data analysis; Thesaurus Term: Environmental exposure; Subject Term: Chi-squared test; Subject Term: Labor supply; Subject Term: Probability theory; Subject Term: Questionnaires; Subject Term: Research -- Finance; Subject Term: Self-evaluation; Subject Term: Statistics; Subject Term: T-test (Statistics); Subject Term: Thyroxine; Subject Term: Multiple regression analysis; Subject Term: Cross-sectional method; Subject Term: Data analysis -- Software; Subject Term: Descriptive statistics; Subject: United States; Author-Supplied Keyword: free thyroxine; Author-Supplied Keyword: lead; Author-Supplied Keyword: occupational exposure; Author-Supplied Keyword: thyroxine; NAICS/Industry Codes: 561320 Temporary Help Services; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 7p; Illustrations: 3 Charts; Document Type: Article L3 - 10.4137/EHI.S7193 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=73221703&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 104529777 T1 - Thyroxine and Free Thyroxine Levels in Workers Occupationally Exposed to Inorganic Lead. AU - Bledsoe, Michael L. AU - Pinkerton, Lynne E. AU - Silver, Sharon AU - Deddens, James A. AU - Biagini, Raymond E. Y1 - 2011/01// N1 - Accession Number: 104529777. Language: English. Entry Date: 20120410. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Australia & New Zealand; Biomedical. Grant Information: This project was funded in part by an interagency agreement between NIOSH and NIEHS (Y1-ES-0001, Clinical Immunotoxicity).. KW - Thyroxine -- Blood KW - Lead -- Adverse Effects KW - Occupational Exposure -- Adverse Effects KW - Workforce KW - Funding Source KW - Human KW - Descriptive Statistics KW - Multiple Linear Regression KW - United States KW - Male KW - Questionnaires KW - T-Tests KW - Chi Square Test KW - Adult KW - P-Value KW - Data Analysis, Statistical KW - Data Analysis Software KW - Cross Sectional Studies KW - Self Report SP - 55 EP - 61 JO - Environmental Health Insights JF - Environmental Health Insights JA - ENVIRON HEALTH INSIGHTS IS - 5 PB - Libertas Academica Ltd. SN - 1178-6302 AD - Occupational Medicine Services, 78th Aerospace Medicine Squadron, 78th Medical Group, United States Air Force, Robins Air Force Base, GA, USA AD - Division of Surveillance, Hazard Evaluations and Field Studies, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Cincinnati, OH, USA AD - Division of Applied Research and Technology, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Cincinnati, OH, USA DO - 10.4137/EHI.S7193 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104529777&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - CHAP ID - 2010-06010-021 AN - 2010-06010-021 AU - Adkins, Joyce A. AU - Kelley, Susan Douglas AU - Bickman, Leonard AU - Weiss, Howard M. ED - Quick, James Campbell ED - Tetrick, Lois E. ED - Quick, James Campbell, (Ed) ED - Tetrick, Lois E., (Ed) T1 - Program evaluation: The bottom line in organizational health. T2 - Handbook of occupational health psychology. Y1 - 2011/// SP - 395 EP - 415 CY - Washington, DC, US PB - American Psychological Association SN - 1-4338-0776-9 SN - 978-1-4338-0776-3 N1 - Accession Number: 2010-06010-021. Partial author list: First Author & Affiliation: Adkins, Joyce A.; United States Air Force, Langley AFB, VA, US. Release Date: 20100809. Correction Date: 20170213. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 1-4338-0776-9, Hardcover; 978-1-4338-0776-3, Hardcover. Language: English. Major Descriptor: Health Care Psychology; Program Development; Program Evaluation; Strategies; Occupational Health. Minor Descriptor: Ethics; Industrial and Organizational Psychology; Organizations. Classification: Industrial & Organizational Psychology (3600); Health Psychology & Medicine (3360). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 21. AB - Thorough and effective program evaluation strategies are vital to the sustained acceptance of occupational health psychology in the workplace and to its growth as a professional discipline. This chapter addresses the design and implementation of program evaluation strategies in an occupational health environment. Basic strategies and techniques of evaluation design and implementation will be discussed first, followed by a consideration of value, utility, and ethics associated with the use of program evaluation products. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - occupational health psychology KW - program evaluation strategies KW - design KW - implementation KW - value KW - utility KW - ethics KW - organizational health KW - 2011 KW - Health Care Psychology KW - Program Development KW - Program Evaluation KW - Strategies KW - Occupational Health KW - Ethics KW - Industrial and Organizational Psychology KW - Organizations KW - 2011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-06010-021&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Maji, Arup K. AU - Harris, Mark AU - Garcia, Daniel AU - deBlonk, Brett J. T1 - Feasibility Assessment of Deployable Composite Telescope. JO - Journal of Aerospace Engineering JF - Journal of Aerospace Engineering J1 - Journal of Aerospace Engineering PY - 2011/01// Y1 - 2011/01// VL - 24 IS - 1 M3 - Article SP - 12 EP - 19 PB - American Society of Civil Engineers SN - 08931321 AB - Volume constraints in existing launch vehicles require large space-based sensors to be folded during launch and subsequently deployed in space. This paper outlines the development of a prototype deployable astronomical telescope that would maintain both structural stability and optical alignment for potential space-based deployment. To achieve this goal, the structure must possess adequate stiffness and maintain its positional accuracy after a deployment cycle has ensued. The development and testing were based on a consumer-astronomy Newtonian telescope. A foldable carbon-epoxy composite replacement structure was integrated to replace the aluminum-truss assembly provided by the manufacturer. The composite telescope's structure and optical output were evaluated using computational (finite-element analyses and closed-form equations) and experimental methods. The structure was subjected to postdeployment displacement tests to quantify alignment accuracy. The stresses introduced in folding the tape springs were evaluated for both magnitude and mode of failure using the Tsai-Wu failure criterion. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerospace Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FEASIBILITY studies KW - TELESCOPES KW - LAUNCH vehicles (Astronautics) KW - DETECTORS KW - PROTOTYPES KW - STRUCTURAL stability KW - FINITE element method N1 - Accession Number: 55830964; Source Information: Jan2011, Vol. 24 Issue 1, p12; Subject Term: FEASIBILITY studies; Subject Term: TELESCOPES; Subject Term: LAUNCH vehicles (Astronautics); Subject Term: DETECTORS; Subject Term: PROTOTYPES; Subject Term: STRUCTURAL stability; Subject Term: FINITE element method; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.1061/(ASCE)AS.1943-5525.0000045 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=55830964&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR T1 - Using Team Efficacy Surveys to Help Promote Self-and-Team-Efficacy among College Athletes. AU - DeRohan, Nathan AU - Nagy, Christopher AU - Meisenhelder, Helen AU - Katayama, Andrew D. JO - Sport Journal JF - Sport Journal Y1 - 2011/01// VL - 14 IS - 1 SP - 1 EP - 20 SN - 15439518 N1 - Accession Number: 71233139; Author: DeRohan, Nathan Author: Nagy, Christopher Author: Meisenhelder, Helen Author: Katayama, Andrew D.: 1 email: andrew.katayama@usafa.edu. ; Author Affiliation: 1 Professor, Department of Behavioral Sciences and Leadership United States Air Force Academy 2354 Fairchild Dr., Ste 6L101 USAF Academy, CO 80840-6228; No. of Pages: 1; Language: English; Publication Type: Article; Update Code: 20120213 N2 - The purpose of this study was to track and understand attitudinal changes and trends among 3 NCAA Division I intercollegiate teams at the United States Air Force Academy (USAFA). We wanted to see if surveys of team efficacy would help promote self-and-team efficacy with respect to team goals and outcomes. Measures of team efficacy and locus of control were measured throughout the season: preseason, mid-season and postseason. Even though the results varied slightly for each sport, common trends were found with respect to team efficacy and their perceived chances for success and team history. Team goals did not fluctuate much throughout the season. However, results from the survey showed a significant drop in team efficacy for both the baseball and women's basketball teams from preseason to midseason for both internal locus of control: baseball, t(15) = 3.53, p = .003); women's basketball, t(15) = 3.67, p = .002. A significant drop in the teams external locus of control was also observed for both baseball, t(15) = 4.43, p < .001 and women's basketball, t(15) = 2.95, p = .010. However, for the hockey team, there was not a significant drop in internal locus of control, t(15) = 1.23, p = .237 or in external locus of control, t(15) = 1.10, p= .289. As the baseball and women's basketball teams lost more games both their internal and external locus of control dropped. Accordingly, because the Hockey team did not lose as many games from midseason on their locus of control measures did not experience any drop-off. ABSTRACT FROM AUTHOR KW - *ATHLETIC ability KW - *ATTITUDE (Psychology) KW - *BASEBALL KW - *BASKETBALL KW - *COLLEGE athletes KW - *GOAL (Psychology) KW - *HOCKEY KW - *SELF-efficacy KW - *SPORTS psychology KW - ATTRIBUTION (Social psychology) KW - COMPARATIVE studies KW - LOCUS of control KW - QUESTIONNAIRES KW - REGRESSION analysis KW - SCALE analysis (Psychology) KW - DATA analysis -- Software KW - DESCRIPTIVE statistics KW - coaching KW - locus of control KW - team efficacy UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=71233139&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 104513753 T1 - Using Team Efficacy Surveys to Help Promote Self-and-Team-Efficacy among College Athletes. AU - DeRohan, Nathan AU - Nagy, Christopher AU - Meisenhelder, Helen AU - Katayama, Andrew D. Y1 - 2011/01// N1 - Accession Number: 104513753. Language: English. Entry Date: 20120308. Revision Date: 20150711. Publication Type: Journal Article; research. Journal Subset: Allied Health; Biomedical; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services; Psychiatry/Psychology; Sports Medicine. KW - Athletes, College KW - Attitude -- Trends KW - Goals and Objectives KW - Athletic Performance KW - Self-Efficacy -- Trends KW - Human KW - Comparative Studies KW - Baseball KW - Basketball KW - Female KW - Male KW - Hockey KW - Locus of Control -- Evaluation KW - Psychology, Sports KW - Causal Attribution KW - Adolescence KW - Young Adult KW - Summated Rating Scaling KW - Questionnaires KW - Data Analysis Software KW - Descriptive Statistics KW - Linear Regression SP - 1 EP - 1 JO - Sport Journal JF - Sport Journal JA - SPORT J VL - 14 IS - 1 CY - Daphne, Alabama PB - United States Sports Academy AB - The purpose of this study was to track and understand attitudinal changes and trends among 3 NCAA Division I intercollegiate teams at the United States Air Force Academy (USAFA). We wanted to see if surveys of team efficacy would help promote self-and-team efficacy with respect to team goals and outcomes. Measures of team efficacy and locus of control were measured throughout the season: preseason, mid-season and postseason. Even though the results varied slightly for each sport, common trends were found with respect to team efficacy and their perceived chances for success and team history. Team goals did not fluctuate much throughout the season. However, results from the survey showed a significant drop in team efficacy for both the baseball and women's basketball teams from preseason to midseason for both internal locus of control: baseball, t(15) = 3.53, p = .003); women's basketball, t(15) = 3.67, p = .002. A significant drop in the teams external locus of control was also observed for both baseball, t(15) = 4.43, p < .001 and women's basketball, t(15) = 2.95, p = .010. However, for the hockey team, there was not a significant drop in internal locus of control, t(15) = 1.23, p = .237 or in external locus of control, t(15) = 1.10, p= .289. As the baseball and women's basketball teams lost more games both their internal and external locus of control dropped. Accordingly, because the Hockey team did not lose as many games from midseason on their locus of control measures did not experience any drop-off. SN - 1543-9518 AD - Professor of Psychology, Department of Behavioral Sciences and Leadership, United States Air Force Academy, Colorado Springs UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104513753&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - McKissock, John AU - Mines, Pete AU - Sweet, Mark B. AU - Klyn, Steven L. T1 - Ten-Month In Vitro Leakage Study Single-Cone Obturation System. JO - U.S. Army Medical Department Journal JF - U.S. Army Medical Department Journal J1 - U.S. Army Medical Department Journal PY - 2011/01//Jan-Mar2011 Y1 - 2011/01//Jan-Mar2011 M3 - Article SP - 42 EP - 47 PB - U.S. Army Medical Department SN - 15240436 AB - The purpose of this study was to compare the in vitro sealing ability of the continuous wave of condensation technique using gutta-percha and an epoxy resin based sealer, AH Plus to the sealing ability of the single-cone, glassionomerbased Activ GP Precision Obturation System over 10 months. Fifty maxillary anterior teeth were randomly divided into 2 test groups (20 canals each) and 2 control groups (5 positive and 5 negative). All teeth were stored in 0.9% saline. Group 1 (GP) was prepared with rotary instruments and obturated with the continuous wave of condensation technique using gutta-percha and AH Plus sealer. Group 2 (Activ GP) was prepared with rotary instruments and obturated using the heatless, single-cone, glass-ionomer-based Activ GP Precision Obturation System. Each canal orifice was sealed with amalgam and stored for 10 months in 100% humidity at 37엯C. Amalgam was removed and leakage was evaluated by fluid transport at 10 psi. The median leakage for Group 1 (GP) was 0.500 mm and Group 2 (Activ GP) was 18.865 mm. A Mann-Whitney Rank Sum test was used to evaluate the data and determine if a difference existed between the 2 groups. Under the conditions of this study, the Activ GP glass-ionomerbased single-cone obturation technique demonstrated statistically significant higher leakage rates than a continuous wave of condensation technique. [ABSTRACT FROM AUTHOR] AB - Copyright of U.S. Army Medical Department Journal is the property of U.S. Army Medical Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GUTTA-percha KW - EPOXY resins KW - INCISORS KW - CONDENSATION KW - AMALGAMS (Alloys) KW - DENTAL adhesives N1 - Accession Number: 69986970; Source Information: Jan-Mar2011, p42; Subject Term: GUTTA-percha; Subject Term: EPOXY resins; Subject Term: INCISORS; Subject Term: CONDENSATION; Subject Term: AMALGAMS (Alloys); Subject Term: DENTAL adhesives; Subject Term: ; Number of Pages: 6p; ; Illustrations: 2 Color Photographs, 1 Diagram; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=69986970&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - CHAP ID - 2010-09198-012 AN - 2010-09198-012 AU - Thomas, Jay C. AU - Meeke, Heidi AU - French, Lisa Selthon ED - Thomas, Jay C. ED - Hersen, Michel ED - Thomas, Jay C., (Ed) ED - Hersen, Michel, (Ed) T1 - Planning data collection and performing analyses. T2 - Understanding research in clinical and counseling psychology. Y1 - 2011/// SP - 293 EP - 316 CY - New York, NY, US PB - Routledge/Taylor & Francis Group SN - 978-0-415-99221-3 N1 - Accession Number: 2010-09198-012. Partial author list: First Author & Affiliation: Thomas, Jay C.; Pacific University, School of Professional Psychology, Hillsboro, OR, US. Release Date: 20110801. Correction Date: 20170112. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-0-415-99221-3, Hardcover. Language: English. Major Descriptor: Clinical Practice; Data Collection; Experimental Psychologists; Experimentation; Statistical Analysis. Minor Descriptor: Anxiety Disorders. Classification: Psychotherapy & Psychotherapeutic Counseling (3310). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). Tests & Measures: Yale-Brown Obsessive Compulsive Scale. References Available: Y. Page Count: 24. AB - The purpose of this chapter is to provide the beginning researcher with a set of guidelines for how to actually set up and conduct a research study. It is based on our experience in conducting numerous research studies and program evaluations and on the senior author's experience in working with many students on master's theses and doctoral dissertations. The content of the chapter reflects what we have found to be the most troublesome phases of conducting a study, particularly from the perspective of students faced with their first research project. We will use an example from an actual small-scale study conducted in Dr. Ricks Warren's Anxiety Disorders Clinic. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - data collection KW - analysis KW - researchers KW - research studies KW - anxiety disorders KW - clinics KW - 2011 KW - Clinical Practice KW - Data Collection KW - Experimental Psychologists KW - Experimentation KW - Statistical Analysis KW - Anxiety Disorders KW - 2011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-09198-012&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-00025-001 AN - 2011-00025-001 AU - Billock, Vincent A. AU - Tsou, Brian H. T1 - To honor Fechner and obey Stevens: Relationships between psychophysical and neural nonlinearities. JF - Psychological Bulletin JO - Psychological Bulletin JA - Psychol Bull Y1 - 2011/01// VL - 137 IS - 1 SP - 1 EP - 18 CY - US PB - American Psychological Association SN - 0033-2909 SN - 1939-1455 AD - Billock, Vincent A., National Research Council, Room 210, Building 248, Wright- Patterson Air Force Base, OH, US, 45433 N1 - Accession Number: 2011-00025-001. PMID: 21219055 Partial author list: First Author & Affiliation: Billock, Vincent A.; National Research Council, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Other Publishers: Psychological Review Company; The Macmillan Company; The Review Publishing Company. Release Date: 20110110. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Billock, Vincent A. Major Descriptor: History of Psychology; Psychophysics. Minor Descriptor: Nonlinear Regression. Classification: Psychophysiology (2560). Methodology: Mathematical Model. References Available: Y. Page Count: 18. Issue Publication Date: Jan, 2011. Publication History: Accepted Date: Aug 17, 2010; Revised Date: Aug 13, 2010; First Submitted Date: Dec 23, 2009. Copyright Statement: American Psychological Association. 2011. AB - G. T. Fechner (1860/1966) famously described two kinds of psychophysics: Outer psychophysics captures the black box relationship between sensory inputs and perceptual magnitudes, whereas inner psychophysics contains the neural transformations that Fechner's outer psychophysics elided. The relationship between the two has never been clear. Moreover, psychophysical power laws are found in almost every sensory system, yet the vast majority of neurons show sigmoid nonlinearities. Here, we selectively review the literatures on psychophysical and physiological nonlinearities and show how they can be placed within a framework for understanding the relationship between inner and outer psychophysics: a neural organization with a logical structure commensurate to outer psychophysical theory. In theoretical treatments of Stevens's law, the power law is a consequence of combining a Weber's law scaling of inputs with a Weber's law–like scaling of sensation magnitudes, yielding an exponent that is the ratio of the Weber constants. A neural derivation using physiological sigmoid nonlinearities should be commensurate to this internal logic. There is a class of models in which two nonlinear neural mechanisms (e.g., a sensory channel and the cortical numerosity mechanism tapped by magnitude estimation) are coupled through feedback, yielding power law behavior as an emergent property of the system, with an exponent that is a ratio of neural coupling strengths. Rather than a discrepancy between psychophysics and physiology, these models suggest complementarity between inner and outer psychophysics, because the Weber constants required for outer psychophysics modeling can be derived from the sigmoid nonlinearities of inner psychophysics. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - MacKay model KW - Naka–Rushton neural nonlinearity KW - Weber's law KW - inner and outer psychophysics KW - psychophysical power law KW - 2011 KW - History of Psychology KW - Psychophysics KW - Nonlinear Regression KW - 2011 U1 - Sponsor: National Research Council/Air Force Office of Scientific Research. Other Details: Senior Associate Award. Recipients: Billock, Vincent A. DO - 10.1037/a0021394 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-00025-001&site=ehost-live&scope=site UR - vincent.billock.ctr@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-11428-002 AN - 2011-11428-002 AU - Carretta, Thomas R. T1 - Pilot Candidate Selection Method: Still an effective predictor of US Air Force pilot training performance. JF - Aviation Psychology and Applied Human Factors JO - Aviation Psychology and Applied Human Factors Y1 - 2011/// VL - 1 IS - 1 SP - 3 EP - 8 CY - Germany PB - Hogrefe Publishing SN - 2192-0923 SN - 2192-0931 AD - Carretta, Thomas R., AFMC 711th HPW/RHCI, 2210 8th Street, Area B, Bldg. 146, Room 122, Wright-Patterson AFB, OH, US N1 - Accession Number: 2011-11428-002. Partial author list: First Author & Affiliation: Carretta, Thomas R.; Air Force Research Laboratory, Wright-Patterson AFB, OH, US. Release Date: 20110606. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Aircraft Pilots; Personnel Evaluation; Personnel Selection. Minor Descriptor: Performance; Personnel Training. Classification: Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Tests & Measures: Air Force Officer Qualifying Test, Form S; Self-Description Inventory; Test of Basic Aviation Skills. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 6. Issue Publication Date: 2011. Copyright Statement: Hogrefe Publishing. 2011. AB - In 1993, the US Air Force implemented the Pilot Candidate Selection Method (PCSM) as an additional indicator of pilot training aptitude. PCSM scores have been shown to be related to several pilot training criteria including graduation/elimination, flying grades, class rank, and number of flight hours needed to complete training (Carretta & Ree, 2003). The PCSM composite is still in use today, but the scores that contribute to it have changed. The study reported here examined the predictive validity of the current composite versus several training performance measures for 883 students attending Specialized Undergraduate Pilot Training (SUPT). Results indicated that the PCSM composite remained predictive of flying training performance despite changes in test content and flying training. After correction for multivariate range restriction and dichotomization of the graduation/elimination criterion, the correlation between the PCSM composite and T-6 completion was .53. This is consistent with the value of .46 reported by Carretta and Ree (2003) for an earlier version of the PCSM composite. Its predictiveness can be attributed to the measurement of factors that have consistently shown a relation to flying performance: cognitive ability, aviation job knowledge/experience, and psychomotor ability. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Pilot Candidate Selection Method KW - personnel measurement KW - pilot selection KW - psychometric testing KW - US Air Force KW - 2011 KW - Air Force Personnel KW - Aircraft Pilots KW - Personnel Evaluation KW - Personnel Selection KW - Performance KW - Personnel Training KW - 2011 DO - 10.1027/2192-0923/a00002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-11428-002&site=ehost-live&scope=site UR - Thomas.Carretta@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-05293-006 AN - 2011-05293-006 AU - Salnaitis, Christina L. AU - Baker, Crystal A. AU - Holland, James AU - Welsh, Marilyn T1 - Differentiating Tower of Hanoi performance: Interactive effects of psychopathic tendencies, impulsive response styles, and modality. JF - Applied Neuropsychology JO - Applied Neuropsychology JA - Appl Neuropsychol Y1 - 2011/01// VL - 18 IS - 1 SP - 37 EP - 46 CY - United Kingdom PB - Taylor & Francis SN - 0908-4282 SN - 1532-4826 AD - Salnaitis, Christina L., Department of Behavioral Science and Leadership, United States Air Force Academy, 2354 Fairchild Dr., Ste. 6J147, CO, US, 80840 N1 - Accession Number: 2011-05293-006. PMID: 21390899 Other Journal Title: Applied Neuropsychology: Adult. Partial author list: First Author & Affiliation: Salnaitis, Christina L.; Department of Behavioral Science and Leadership, United States Air Force Academy, CO, US. Other Publishers: Lawrence Erlbaum. Release Date: 20110516. Correction Date: 20140721. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Performance; Psychometrics; Test Administration; Test Reliability. Minor Descriptor: Impulsiveness; Psychopathy. Classification: Tests & Testing (2220). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Psychopathic Personality Inventory—Machiavellian Egocentricity Subscale; Psychopathic Personality Inventory—Social Potency Subscale; Psychopathic Personality Inventory—Coldheartedness Subscale; Psychopathic Personality Inventory—Carefree Nonplanfulness Subscale; Psychopathic Personality Inventory—Fearlessness Subscale; Psychopathic Personality Inventory—Blame Externalization Subscale; Psychopathic Personality Inventory—Impulsive Nonconformity Subscale; Psychopathic Personality Inventory—Stress Immunity Subscale; Manual Tower of Hanoi–Revised; Computerized Tower of Hanoi–Revised; Wechsler Memory Scales–III—Spatial Span Task. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Jan, 2011. Copyright Statement: Taylor & Francis Group, LLC AB - Previous research has demonstrated that performance on the computerized Tower of Hanoi is lower than performance on the manual Tower of Hanoi. The present study was conducted to elucidate potential factors that contribute to performance differences across modalities. Personality characteristics related to psychopathy and impulsive response styles were hypothesized to be correlates of poor performance on the computerized version of the Tower of Hanoi, which is a problem-solving task that requires working memory, planning, and inhibition. Eighty-four college students from a mid-sized university participated. Participants were grouped as low, middle, or high psychopathy based on their total scores on the Psychopathic Personality Inventory. A 2 (Modality) ×3 (Psychopathy) analysis of covariance, controlling for visuospatial working memory, yielded a significant interaction, in which the high psychopathy group did not differ in performance across modality, whereas the low and middle psychopathy groups performed more poorly on the computerized version. Subsequent analyses on reaction time and accuracy for the computerized modality indicated that a reflective, methodical approach to the computerized task was more productively utilized in the low psychopathy group, whereas the fast and accurate approach was more productively utilized in the high psychopathy group. These results suggest that individuals with elevated psychopathic tendencies within a normal population are not necessarily deficient in problem-solving performance on the Tower of Hanoi. Impulsive responding is associated with poor performance in the computerized version of the Tower of Hanoi, irrespective of psychopathic tendencies. Caution should be exercised in interpreting scores on the computerized Tower of Hanoi because the psychometric properties required for comparability with the manual version have not been sufficiently demonstrated. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Tower of Hanoi performance KW - interactive effects KW - psychopathic tendencies KW - impulsive response styles KW - modality KW - performance differences KW - test reliability KW - psychometrics KW - 2011 KW - Performance KW - Psychometrics KW - Test Administration KW - Test Reliability KW - Impulsiveness KW - Psychopathy KW - 2011 DO - 10.1080/09084282.2010.523381 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-05293-006&site=ehost-live&scope=site UR - christina.salnaitis@usafa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-11701-001 AN - 2010-11701-001 AU - Courtney, Michael W. AU - Courtney, Amy C. T1 - Working toward exposure thresholds for blast-induced traumatic brain injury: Thoracic and acceleration mechanisms. JF - NeuroImage JO - NeuroImage JA - Neuroimage Y1 - 2011/01// VL - 54 IS - Suppl 1 SP - S55 EP - S61 CY - Netherlands PB - Elsevier Science SN - 1053-8119 SN - 1095-9572 AD - Courtney, Michael W., BTG Research, PO Box 62541, Colorado Springs, CO, US, 80962-2541 N1 - Accession Number: 2010-11701-001. PMID: 20483376 Partial author list: First Author & Affiliation: Courtney, Michael W.; US Air Force Academy, CO, US. Release Date: 20100607. Correction Date: 20110207. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Injuries; Thresholds; Traumatic Brain Injury. Classification: Neurological Disorders & Brain Damage (3297). Population: Human (10). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 7. Issue Publication Date: Jan, 2011. Publication History: First Posted Date: May 17, 2010; Accepted Date: May 11, 2010; Revised Date: May 10, 2010; First Submitted Date: Dec 1, 2009. Copyright Statement: All rights reserved. Elsevier Inc. 2010. AB - Research in blast-induced lung injury resulted in exposure thresholds that are useful in understanding and protecting humans from such injury. Because traumatic brain injury (TBI) due to blast exposure has become a prominent medical and military problem, similar thresholds should be identified that can put available research results in context and guide future research toward protecting war fighters as well as diagnosis and treatment. At least three mechanical mechanisms by which the blast wave may result in brain injury have been proposed—a thoracic mechanism, head acceleration, and direct cranial transmission. These mechanisms need not be mutually exclusive. In this study, likely regions of interest for the first two mechanisms based on blast characteristics (positive pulse duration and peak effective overpressure) are developed using available data from blast experiments and related studies, including behind-armor blunt trauma and ballistic pressure wave studies. These related studies are appropriate to include because blast-like pressure waves are produced that result in neurological effects like those caused by blast. Results suggest that injury thresholds for each mechanism are dependent on blast conditions, and that under some conditions, more than one mechanism may contribute. There is a subset of blast conditions likely to result in TBI due to head acceleration and/or a thoracic mechanism without concomitant lung injury. These results can be used to guide experimental designs and compare additional data as they become available. Additional data are needed before actual probabilities or severity of TBI for a given exposure can be described. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - exposure thresholds KW - blast-induced traumatic brain injury KW - thoracic mechanisms KW - acceleration mechanisms KW - ballistic pressure wave KW - 2011 KW - Injuries KW - Thresholds KW - Traumatic Brain Injury KW - 2011 DO - 10.1016/j.neuroimage.2010.05.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-11701-001&site=ehost-live&scope=site UR - amy_courtney@post.harvard.edu UR - Michael.Courtney@usafa.edu DP - EBSCOhost DB - psyh ER - TY - UNPB AU - Sonmez, Tayfun AU - Switzer, Tobias AD - Boston College AD - United States Air Force T1 - Matching with (Branch-of-Choice) Contracts at United States Military Academy PB - Boston College Department of Economics, Boston College Working Papers in Economics: 782 Y1 - 2011/// AV - Availability Note: Information provided in collaboration with the RePEc Project: http://repec.org N1 - Accession Number: 1268618; Keywords: Market Design, Matching with Contracts, Stability, Strategy-Proofness; Publication Type: Working Paper; Update Code: 201112 N2 - Branch selection is a key decision in a cadet's military career. Cadets at USMA can increase their branch priorities at a fraction of slots by extending their service agreement. This real-life matching problem fills an important gap in market design literature. Although priorities fail a key substitutes condition, the agent-optimal stable mechanism is well-defined, and in contrast to the current USMA mechanism it is fair, stable, and strategy-proof. Adoption of this mechanism benefits cadets and the Army. This new application shows that matching with contracts model is practically relevant beyond traditional domains that satisfy the substitutes condition. KW - Bargaining Theory; Matching Theory C78 KW - Equity, Justice, Inequality, and Other Normative Criteria and Measurement D63 KW - Positive Analysis of Policy Formulation and Implementation D78 L3 - http://fmwww.bc.edu/EC-P/WP782.pdf UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1268618&site=ehost-live&scope=site UR - http://fmwww.bc.edu/EC-P/WP782.pdf DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Trohalaki, Steven AU - Pachter, Ruth T1 - The effects of the dimethylether bridging moiety in the H-cluster of the Clostridium pasteurianum hydrogenase on the mechanism of H2 production: A quantum mechanics/molecular mechanics study JO - International Journal of Hydrogen Energy JF - International Journal of Hydrogen Energy Y1 - 2010/12/15/ VL - 35 IS - 24 M3 - Article SP - 13179 EP - 13185 SN - 03603199 AB - Abstract: [Fe–Fe]-hydrogenases are naturally occurring metalloenzymes that catalyze the reversible production of H2 from two protons and two electrons. [Fe–Fe]-hydrogenases found in two species –Clostridium pasteurianum (CpI) and Desulfovibrio desulfuricans (DdH) – were shown with x-ray crystallography to have active sites that are very similar, although several atoms that bridge the dithiolate ligand were unresolved. In earlier work, we employed density functional theory (DFT) within a QM/MM method to investigate two previously proposed mechanisms of hydrogen production by DdH and CpI hydrogenases. In one mechanism (I), a CO ligand bridging two Fe atoms in the active site rotates to a terminal position while in the other (II) the CO bridge remains intact throughout the catalytic cycle. We previously assumed that the active sites for the two hydrogenases were identical; each had a dimethylamine bridging moiety, whose basicity is important for Mechanism II. Our overall conclusion, taking into consideration an energy comparison for the two mechanisms and activation energies for the CO-unbridging step in Mechanism I, was that Mechanism II was favored for both hydrogenases. In this paper, we extend our previous work to show that Mechanism II is favored over Mechanism I even if the bridging moiety in CpI hydrogenase is dimethylether, a significantly weaker base than dimethylamine, providing further support for Mechanism II even though experimental verification of the bridging moiety for the CpI H-cluster is lacking. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Hydrogen production KW - Catalysis KW - Hydrogenase KW - Ether (Anesthetic) KW - Clostridium pasteurianum KW - Quantum theory KW - Metalloenzymes KW - Protons KW - Electrons KW - X-ray crystallography KW - Molecular dynamics KW - All-iron hydrogenase KW - Dimethyletherdithiolate KW - Hydrogenase mechanism KW - QM/MM N1 - Accession Number: 54915580; Trohalaki, Steven 1,2; Email Address: steven.trohalaki@wpafb.af.mil; Pachter, Ruth 1; Email Address: ruth.pachter@wpafb.af.mil; Affiliations: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; 2: General Dynamics Information Technology, Inc., USA; Issue Info: Dec2010, Vol. 35 Issue 24, p13179; Thesaurus Term: Hydrogen production; Thesaurus Term: Catalysis; Subject Term: Hydrogenase; Subject Term: Ether (Anesthetic); Subject Term: Clostridium pasteurianum; Subject Term: Quantum theory; Subject Term: Metalloenzymes; Subject Term: Protons; Subject Term: Electrons; Subject Term: X-ray crystallography; Subject Term: Molecular dynamics; Author-Supplied Keyword: All-iron hydrogenase; Author-Supplied Keyword: Dimethyletherdithiolate; Author-Supplied Keyword: Hydrogenase mechanism; Author-Supplied Keyword: QM/MM; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijhydene.2010.08.095 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=54915580&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Cheng, Meng-Dawn AU - Corporan, Edwin T1 - A study of extractive and remote-sensing sampling and measurement of emissions from military aircraft engines JO - Atmospheric Environment JF - Atmospheric Environment Y1 - 2010/12/11/ VL - 44 IS - 38 M3 - Article SP - 4867 EP - 4878 SN - 13522310 AB - Abstract: Aircraft emissions contribute to the increased atmospheric burden of particulate matter (PM) that plays an important role in air quality, human health, visibility, contrail formation and climate change. Sampling and measurement of modern aircraft emissions at the engine exhaust plane (EEP) for engine and fuel certification remains challenging, as no agency-certified method is available. In this paper we summarize the results of three recent field studies devoted to investigate the consistency and applicability of “extractive” and “optical remote-sensing” (ORS) technologies in the sampling and measurement of gaseous and PM emitted by a number of military aircraft engines. Three classes of military engines were investigated; these include T56, TF33, and T700 & T701C types of engines, which consume 70–80% of the military aviation fuel each year. JP-8 and Fischer–Tropsch (FT)-derived paraffinic fuels were used to study the effect of fuels. It was found that non-volatile particles in the engine emissions were in the 20nm range for the low power condition of new helicopter engines to 80nm for the high power condition of legacy engines. Elemental analysis indicated little metals were present on particles, while most of the materials on the exhaust particles were carbon and sulfate based. Alkanes, carbon monoxide, carbon dioxide, nitrogen oxides, sulfur dioxide, formaldehyde, ethylene, acetylene and propylene were detected. The last five species were most noticeable only under low engine power. The emission indices calculated based on the ORS data deviate significantly from those based on the extractive data. Nevertheless, the ORS techniques were useful in the sense that it provided non-intrusive real-time detection of species in the exhaust plume, which warrants further development. The results obtained in this program help validate sampling methodology and measurement techniques used for non-volatile PM aircraft emissions as described in the . [Copyright &y& Elsevier] AB - Copyright of Atmospheric Environment is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Aircraft exhaust emissions KW - Air quality KW - Particulate matter KW - Climatic changes KW - FUEL KW - Remote sensing -- Atmospheric effects KW - Sampling (Statistics) KW - Military airplanes KW - Airplanes KW - Airplanes -- Turbine-propeller engines KW - Aircraft KW - Dilution KW - Emission KW - Remote sensing KW - Turbine engine N1 - Accession Number: 54656892; Cheng, Meng-Dawn 1; Email Address: chengmd@ornl.gov; Corporan, Edwin 2; Affiliations: 1: Oak Ridge National Laboratory, Division of Environmental Research, PO Box 2008, MS 6038, Oak Ridge, TN 37831, USA; 2: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Issue Info: Dec2010, Vol. 44 Issue 38, p4867; Thesaurus Term: Aircraft exhaust emissions; Thesaurus Term: Air quality; Thesaurus Term: Particulate matter; Thesaurus Term: Climatic changes; Thesaurus Term: FUEL; Subject Term: Remote sensing -- Atmospheric effects; Subject Term: Sampling (Statistics); Subject Term: Military airplanes; Subject Term: Airplanes; Subject Term: Airplanes -- Turbine-propeller engines; Author-Supplied Keyword: Aircraft; Author-Supplied Keyword: Dilution; Author-Supplied Keyword: Emission; Author-Supplied Keyword: Remote sensing; Author-Supplied Keyword: Turbine engine; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 541910 Marketing Research and Public Opinion Polling; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.atmosenv.2010.08.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=54656892&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 104994262 T1 - Patellar sleeve fracture. AU - Nath, Priya I AU - Lattin Jr, Grant E Y1 - 2010/12/02/ N1 - Accession Number: 104994262. Language: English. Entry Date: 20110520. Revision Date: 20150711. Publication Type: Journal Article; case study. Journal Subset: Biomedical; Continental Europe; Europe; Peer Reviewed. Special Interest: Diagnostic Imaging; Pediatric Care. NLM UID: 0365332. KW - Fractures -- Diagnosis KW - Knee Injuries -- Diagnosis KW - Patellar Ligament -- Injuries KW - Patellar Ligament -- Pathology KW - Adolescence KW - Male KW - Patellar Ligament -- Radiography SP - S53 EP - S53 JO - Pediatric Radiology JF - Pediatric Radiology JA - PEDIATR RADIOL VL - 40 CY - , PB - Springer Science & Business Media B.V. SN - 0301-0449 AD - United States Air Force, Uniformed Services of the Health Sciences, School of Medicine, 4301 Jones Bridge Road, Bethesda, MD 20814, USA. priya.nath@usuhs.mil U2 - PMID: 20526592. DO - 10.1007/s00247-010-1721-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104994262&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - CASE AU - Hawkins, Timothy G. AU - Coyne, Adam V. AU - Hudgens, Bryan J. T1 - Electronic Reverse Auctions. JO - Air Force Journal of Logistics JF - Air Force Journal of Logistics J1 - Air Force Journal of Logistics PY - 2010/12// Y1 - 2010/12// VL - 34 IS - 3/4 M3 - Case Study SP - 2 EP - 15 PB - Superintendent of Documents SN - 0270403X AB - The article presents a case study on the use of electronic reverse auction (e-RA) for the procurement and installation of 29 power generators. The study was conducted by the U.S. Air Force (USAF) in Kuwait to address gaps in e-RA application within the Department of Defense (DoD). It explores how the federal government can use e-RA as strategic sourcing tool and integrate the application into its source selections. KW - AIR force procurement KW - DEFENSE procurement KW - UNITED States. Air Force KW - UNITED States. Dept. of Defense KW - GOVERNMENT purchasing KW - INTERNET auctions KW - KUWAIT N1 - Accession Number: 65049564; Source Information: Dec2010, Vol. 34 Issue 3/4, p2; Subject Term: AIR force procurement; Subject Term: DEFENSE procurement; Subject Term: UNITED States. Air Force; Subject Term: UNITED States. Dept. of Defense; Subject Term: GOVERNMENT purchasing; Subject Term: INTERNET auctions; Subject Term: ; Geographic Subject: KUWAIT; Geographic Subject: ; Number of Pages: 14p; ; Illustrations: 1 Color Photograph, 2 Diagrams, 6 Charts; ; Document Type: Case Study; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=65049564&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Steinberg, A.M. AU - Boxx, I. AU - Stöhr, M. AU - Carter, C.D. AU - Meier, W. T1 - Flow–flame interactions causing acoustically coupled heat release fluctuations in a thermo-acoustically unstable gas turbine model combustor JO - Combustion & Flame JF - Combustion & Flame Y1 - 2010/12// VL - 157 IS - 12 M3 - Article SP - 2250 EP - 2266 SN - 00102180 AB - Abstract: A detailed analysis of the flow–flame interactions associated with acoustically coupled heat-release rate fluctuations was performed for a 10kW, CH4/air, swirl stabilized flame in a gas turbine model combustor exhibiting self-excited thermo-acoustic oscillations at 308Hz. High-speed stereoscopic particle image velocimetry, OH planar laser induced fluorescence, and OH∗ chemiluminescence measurements were performed at a sustained repetition rate of 5kHz, which was sufficient to resolve the relevant combustor dynamics. Using spatio-temporal proper orthogonal decomposition, it was found that the flow-field contained several simultaneous periodic motions: the reactant flux into the combustion chamber periodically oscillated at the thermo-acoustic frequency (308Hz), a helical precessing vortex core (PVC) circumscribed the burner nozzle at 515Hz, and the PVC underwent axial contraction and extension at the thermo-acoustic frequency. The global heat release rate fluctuated at the thermo-acoustic frequency, while the heat release centroid circumscribed the combustor at the difference between the thermo-acoustic and PVC frequencies. Hence, the three-dimensional location of the heat release fluctuations depended on the interaction of the PVC with the flame surface. This motivated the compilation of doubly phase resolved statistics based on the phase of both the acoustic and PVC cycles, which showed highly repeatable periodic flow–flame configurations. These include flames stabilized between the inflow and inner recirculation zone, large-scale flame wrap-up by the PVC, radial deflection of the inflow by the PVC, and combustion in the outer recirculation zones. Large oscillations in the flame surface area were observed at the thermo-accoustic frequency that significantly affected the total heat-release oscillations. By filtering the instantaneous reaction layers at different scales, the importance of the various flow–flame interactions affecting the flame area was determined. The greatest contributor was large-scale elongation of the reaction layers associated with the fluctuating reactant flow rate, which accounted for approximately 50% of the fluctuations. The remaining 50% was distributed between fine scale stochastic corrugation and large-scale corrugation due to the PVC. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMBUSTION chambers KW - Combustion chambers KW - Decomposition (Chemistry) KW - Gas turbines KW - Oscillations KW - Velocimetry KW - Turbulence KW - Flame KW - Surface area KW - Gas turbine combustors KW - High-speed diagnostics KW - Proper orthogonal decomposition KW - Swirl stabilized flames KW - Thermo-acoustic instabilities KW - Turbulence–flame interaction N1 - Accession Number: 54881287; Steinberg, A.M. 1; Email Address: adam.steinberg@dlr.de; Boxx, I. 1; Stöhr, M. 1; Carter, C.D. 2; Meier, W. 1; Affiliations: 1: Institute for Combustion Technology, German Aerospace Centre (DLR), 70569 Stuttgart, Germany; 2: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Issue Info: Dec2010, Vol. 157 Issue 12, p2250; Thesaurus Term: COMBUSTION chambers; Thesaurus Term: Combustion chambers; Thesaurus Term: Decomposition (Chemistry); Subject Term: Gas turbines; Subject Term: Oscillations; Subject Term: Velocimetry; Subject Term: Turbulence; Subject Term: Flame; Subject Term: Surface area; Author-Supplied Keyword: Gas turbine combustors; Author-Supplied Keyword: High-speed diagnostics; Author-Supplied Keyword: Proper orthogonal decomposition; Author-Supplied Keyword: Swirl stabilized flames; Author-Supplied Keyword: Thermo-acoustic instabilities; Author-Supplied Keyword: Turbulence–flame interaction; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 562210 Waste treatment and disposal; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.combustflame.2010.07.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=54881287&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Yoder, P. Douglas AU - Grupen, M. AU - Smith, R. Kent T1 - Demonstration of Intrinsic Tristability in Double-Barrier Resonant Tunneling Diodes With the Wigner Transport Equation. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices J1 - IEEE Transactions on Electron Devices PY - 2010/12//12/01/2010 Y1 - 2010/12//12/01/2010 VL - 57 IS - 12 M3 - Article SP - 3265 EP - 3274 SN - 00189383 AB - The operation of double-barrier resonant tunneling diodes (RTDs) is investigated through self-consistent numerical solution of the Wigner transport equation. Prevalent boundary conditions are demonstrated to lead to unphysical boundary layers in electrostatically self-consistent calculations. New boundary conditions based on nonequilibrium statistics are proposed and validated. Unphysical solutions are also associated with the application of the popular Boltzmann collision operator in the limit of high electron density. An original formulation of the collision operator in the relaxation time approximation is proposed leading to proper asymptotic behavior in both limits of the relaxation time. Coupled solutions of the Wigner transport equation and the Poisson equation for an RTD structure reveal current to be a continuous but multivalued function of applied bias and tristability to be an intrinsic property of device operation. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STABILITY (Mechanics) KW - DIODES KW - TUNNELING (Physics) KW - TRANSPORT theory (Mathematics) KW - NUMERICAL analysis KW - BOUNDARY value problems KW - ELECTRON distribution N1 - Accession Number: 55353788; Source Information: 12/01/2010, Vol. 57 Issue 12, p3265; Subject Term: STABILITY (Mechanics); Subject Term: DIODES; Subject Term: TUNNELING (Physics); Subject Term: TRANSPORT theory (Mathematics); Subject Term: NUMERICAL analysis; Subject Term: BOUNDARY value problems; Subject Term: ELECTRON distribution; Subject Term: ; Number of Pages: 10p; ; Document Type: Article; L3 - 10.1109/TED.2010.2081672 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=55353788&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Rao, Xing AU - Hammack, Steve AU - Lee, Tonghun AU - Carter, Campbell AU - Matveev, Igor B. T1 - Combustion Dynamics of Plasma-Enhanced Premixed and Nonpremixed Flames. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2010/12//12/01/2010 Y1 - 2010/12//12/01/2010 VL - 38 IS - 12 M3 - Article SP - 3265 EP - 3271 SN - 00933813 AB - Combustion dynamics are investigated for plasma-enhanced methane–air flames in premixed and nonpremixed configurations using a transient arc dc plasmatron. Planar laser-induced fluorescence images of hydroxyl (OH) and carbon monoxide (CO) radicals are obtained over a range of equivalence ratios ( \phi = 0.7 - 1.3), flow rates (6–18 LPM), and plasma powers (100–900 mA) to monitor radical propagation and in situ fuel reforming. The flow rates presented here are outside the range of normal flame stability. In the nonpremixed mode, the fuel is injected separately as a coflow around the plasma discharge, resulting in a unique two-cone flame front geometry, and the flame stability is mainly dependent on the flow dynamics. For premixed flames, partial oxidation occurs inside the chamber, resulting in higher energy conversion efficiencies, and stability is shown to be sensitive to the combustion chemistry. Both configurations are significantly influenced by in situ fuel reforming at higher plasma powers. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMBUSTION KW - THERMOCHEMISTRY KW - FLUORESCENCE KW - LASER beams KW - MANURE gases KW - OPTOELECTRONIC devices KW - ELECTRIC discharges KW - FLAME stability N1 - Accession Number: 57254927; Source Information: 12/01/2010, Vol. 38 Issue 12, p3265; Subject Term: COMBUSTION; Subject Term: THERMOCHEMISTRY; Subject Term: FLUORESCENCE; Subject Term: LASER beams; Subject Term: MANURE gases; Subject Term: OPTOELECTRONIC devices; Subject Term: ELECTRIC discharges; Subject Term: FLAME stability; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TPS.2010.2087041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=57254927&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kim, Ted T. AU - Mall, Shankar AU - Zawada, Larry P. AU - Jefferson, George T1 - Simultaneous Fatigue and Combustion Exposure of a SiC/SiC Ceramic Matrix Composite. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2010/12//12/01/2010 VL - 44 IS - 25 M3 - Article SP - 2991 EP - 3016 SN - 00219983 AB - A melt-infiltrated (MI) woven ceramic matrix composite consisting of a silicon carbide matrix reinforced by boron nitride coated Hi-Nicalon type STM SiC fiber, Hi-Nic-S/BN/SiC, was tested under tension-tension fatigue loading in combination with combustion conditions representative of those experienced by hot-section components such as turbine blades and vanes in modern gas turbine engines. The burner rig fatigue data and fracture surfaces were analyzed for the effects of oxidation on life, failure, and damage mechanisms. These test results were then compared with those obtained from similar fatigue tests performed in a standard furnace under laboratory air environment. Fatigue life in the combustion condition was lower by an order of magnitude in comparison to the isothermal furnace results across the range of applied stress, and so demonstrates the importance of representative combined environment testing in conjunction with fundamental load testing. The observed difference in fatigue performance is attributed to the thermal gradient stress and increased rate of oxidation due to a high moisture level in the combustion rig test condition. The former was verified using finite element analysis and the latter from microscopic analysis of the fracture surfaces. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Fatigue KW - COMBUSTION KW - CERAMIC-matrix composites KW - SILICON carbide KW - BORON nitride KW - SURFACE tension KW - FRACTURE mechanics KW - THERMAL stresses KW - OXIDATION KW - BN interphase KW - burner rig KW - ceramic matrix composite KW - combustion KW - fatigue KW - Hi-Nicalon type S fiber KW - oxidation KW - SiC matrix KW - thermal stress N1 - Accession Number: 55713602; Kim, Ted T. 1; Mall, Shankar 2; Zawada, Larry P. 3; Jefferson, George 3; Source Information: 12/01/2010, Vol. 44 Issue 25, p2991; Subject: MATERIALS -- Fatigue; Subject: COMBUSTION; Subject: CERAMIC-matrix composites; Subject: SILICON carbide; Subject: BORON nitride; Subject: SURFACE tension; Subject: FRACTURE mechanics; Subject: THERMAL stresses; Subject: OXIDATION; Author-Supplied Keyword: BN interphase; Author-Supplied Keyword: burner rig; Author-Supplied Keyword: ceramic matrix composite; Author-Supplied Keyword: combustion; Author-Supplied Keyword: fatigue; Author-Supplied Keyword: Hi-Nicalon type S fiber; Author-Supplied Keyword: oxidation; Author-Supplied Keyword: SiC matrix; Author-Supplied Keyword: thermal stress; Number of Pages: 26p; Document Type: Article; Full Text Word Count: 10161 L3 - 10.1177/0021998310373519 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=55713602&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Wu, Lei AU - Dooley, Sarah AU - Watson, Edward A. AU - McManamon, Paul F. AU - Xie, Huikai T1 - A Tip-Tilt-Piston Micromirror Array for Optical Phased Array Applications. JO - Journal of Microelectromechanical Systems JF - Journal of Microelectromechanical Systems J1 - Journal of Microelectromechanical Systems PY - 2010/12//12/01/2010 Y1 - 2010/12//12/01/2010 VL - 19 IS - 6 M3 - Article SP - 1450 EP - 1461 SN - 10577157 AB - A tip-tilt-piston micromirror array based on electrothermal bimorph actuation is presented. The micromirror uses a compactly folded actuator design that can realize high fill-factor with a simple fabrication process. A 4 \times 4 micromirror array with sub-apertures of 0.9 mm and a fill-factor of 54% is demonstrated. A piston actuation of about 200 \mu\m and tip-tilt scanning of \pm 18^\circ optical angles are obtained at a driving voltage as small as 4.5 Vdc. The mirror's tip-tilt steering capability and piston control make it promising for optical phased array applications. The phased array concept is demonstrated by phasing two adjacent mirrors on the mirror array. Other device characterizations including frequency, transient response, and mirror surface quality are also reported.\hfill [2009-0296] [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microelectromechanical Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICS KW - ACTUATORS KW - MICROELECTROMECHANICAL systems KW - SURFACES (Technology) KW - BIMORPHS KW - MANUFACTURING processes KW - ELECTRIC potential N1 - Accession Number: 57255176; Source Information: 12/01/2010, Vol. 19 Issue 6, p1450; Subject Term: OPTICS; Subject Term: ACTUATORS; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: SURFACES (Technology); Subject Term: BIMORPHS; Subject Term: MANUFACTURING processes; Subject Term: ELECTRIC potential; Subject Term: ; Number of Pages: 12p; ; Document Type: Article; L3 - 10.1109/JMEMS.2010.2076777 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=57255176&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - COOK, JAMES T1 - 'Cyberation' and Just War Doctrine: A Response to Randall Dipert. JO - Journal of Military Ethics JF - Journal of Military Ethics J1 - Journal of Military Ethics PY - 2010/12// Y1 - 2010/12// VL - 9 IS - 4 M3 - Article SP - 411 EP - 423 PB - Routledge SN - 15027570 AB - In this essay, I reject the suggestion that the just war tradition (JWT) does not apply to cyberwarfare (CW). That is not to say CW will not include grey areas defying easy analysis in terms of the JWT. But analogously ambiguous cases have long existed in warfare without undercutting the JWT's broad relevance. That some aspects of CW are unique is likewise no threat to the JWT's applicability. The special character of CW remains similar enough to other kinds of warfare; the distinctions are more differences of degree than of kind. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Military Ethics is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAR KW - COMPUTER crimes KW - MILITARY art & science KW - MILITARY weapons KW - ETHICS N1 - Accession Number: 56042215; Source Information: Dec2010, Vol. 9 Issue 4, p411; Subject Term: WAR; Subject Term: COMPUTER crimes; Subject Term: MILITARY art & science; Subject Term: MILITARY weapons; Subject Term: ETHICS; Subject Term: ; Number of Pages: 13p; ; Document Type: Article; L3 - 10.1080/15027570.2010.536406 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=56042215&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - McCauley, Mathew AU - Hughes, Jamie Hacker AU - Liebling-Kalifani, Helen T1 - WELLBEING OF MILITARY MENTAL HEALTH STAFF. JO - Mental Health Practice JF - Mental Health Practice Y1 - 2010/12// VL - 14 IS - 4 M3 - Article SP - 14 EP - 19 PB - RCNi SN - 14658720 AB - Mental healthcare professionals in the armed forces face similar experiences to other military personnel during and after active service, and have similar needs for professional and personal support. This article explains the results of a study by the authors of the psychosocial wellbeing of military mental health professionals after operational deployment in Iraq between 2003 and 2005. It shows that this had improved after they returned but makes clear that more research into the subject is needed. [ABSTRACT FROM AUTHOR] AB - Copyright of Mental Health Practice is the property of RCNi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PSYCHIATRIC diagnosis KW - PSYCHIATRIC epidemiology KW - MENTAL health personnel -- Education KW - MILITARY personnel -- Education KW - ANALYSIS of variance KW - CORRELATION (Statistics) KW - JOB stress KW - RESEARCH -- Methodology KW - MILITARY medicine KW - MENTAL health personnel KW - PSYCHOLOGICAL tests KW - QUESTIONNAIRES KW - SAMPLING (Statistics) KW - MILITARY personnel KW - STRESS (Psychology) KW - WELL-being KW - CROSS-sectional method KW - Mental health training KW - Psychological Adjustment KW - Psychosocial adjustment N1 - Accession Number: 55821260; McCauley, Mathew 1; Hughes, Jamie Hacker 2; Liebling-Kalifani, Helen 3; Source Information: Dec2010, Vol. 14 Issue 4, p14; Subject: PSYCHIATRIC diagnosis; Subject: PSYCHIATRIC epidemiology; Subject: MENTAL health personnel -- Education; Subject: MILITARY personnel -- Education; Subject: ANALYSIS of variance; Subject: CORRELATION (Statistics); Subject: JOB stress; Subject: RESEARCH -- Methodology; Subject: MILITARY medicine; Subject: MENTAL health personnel; Subject: PSYCHOLOGICAL tests; Subject: QUESTIONNAIRES; Subject: SAMPLING (Statistics); Subject: MILITARY personnel; Subject: STRESS (Psychology); Subject: WELL-being; Subject: CROSS-sectional method; Author-Supplied Keyword: Mental health training; Author-Supplied Keyword: Psychological Adjustment; Author-Supplied Keyword: Psychosocial adjustment; Number of Pages: 6p; Illustrations: 2 Color Photographs, 1 Chart; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=55821260&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 104958689 T1 - Wellbeing of military mental health staff. AU - McCauley M AU - Hughes JH AU - Liebling-Kalifani H Y1 - 2010/12// N1 - Accession Number: 104958689. Language: English. Entry Date: 20110107. Revision Date: 20150820. Publication Type: Journal Article; pictorial; research; tables/charts. Journal Subset: Double Blind Peer Reviewed; Europe; Nursing; Peer Reviewed; UK & Ireland. Special Interest: Military/Uniformed Services; Psychiatry/Psychology. Instrumentation: Posttraumatic Growth Inventory (PTGI); General Health Questionnaire: Version 12 (GHQ-12) (Goldberg). KW - Psychological Well-Being KW - Mental Health Personnel KW - Military Personnel KW - Military Medicine KW - Mental Disorders -- Diagnosis KW - Mental Health Personnel -- Education KW - Military Personnel -- Education KW - Stress, Occupational KW - Stress, Psychological KW - Snowball Sample KW - Multimethod Studies KW - Cross Sectional Studies KW - Correlational Studies KW - Descriptive Statistics KW - Mental Disorders -- Epidemiology KW - Human KW - Questionnaires KW - Psychological Tests SP - 14 EP - 19 JO - Mental Health Practice JF - Mental Health Practice JA - MENT HEALTH PRACT VL - 14 IS - 4 PB - RCNi AB - Mental healthcare professionals in the armed forces face similar experiences to other military personnel during and after active service, and have similar needs for professional and personal support. This article explains the results of a study by the authors of the psychosocial wellbeing of military mental health professionals after operational deployment in Iraq between 2003 and 2005. It shows that this had improved after they returned but makes clear that more research into the subject is needed. SN - 1465-8720 AD - Psychologist, service liaison officer and behavioural health consultant in aerospace medicine with the United States Air Force, RAF Lakenheath, UK UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104958689&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 104952448 T1 - Understanding the spectrum of the female athlete triad. AU - Witkop CT AU - Warren MP Y1 - 2010/12// N1 - Accession Number: 104952448. Language: English. Entry Date: 20110121. Revision Date: 20150711. Publication Type: Journal Article; case study. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Obstetric Care; Women's Health. NLM UID: 0401101. KW - Female Athlete Triad -- Diagnosis KW - Running KW - Bone Density KW - Contraceptives, Oral -- Therapeutic Use KW - Eating Disorders -- Diagnosis KW - Energy Intake KW - Energy Metabolism KW - Female KW - Female Athlete Triad -- Therapy KW - Fractures, Stress -- Etiology KW - Fractures, Stress -- Prevention and Control KW - Menstruation Disorders -- Etiology KW - Menstruation Disorders -- Therapy KW - Nutritional Requirements KW - Osteoporosis -- Etiology KW - Young Adult SP - 1444 EP - 1448 JO - Obstetrics & Gynecology JF - Obstetrics & Gynecology JA - OBSTET GYNECOL VL - 116 IS - 6 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 0029-7844 AD - From the United States Air Force Academy, Colorado Springs, Colorado; and Columbia University Medical Center, Department of Obstetrics and Gynecology and Medicine, New York, New York. U2 - PMID: 21099615. DO - 10.1097/AOG.0b013e3181fbed40 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104952448&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2014-12418-003 AN - 2014-12418-003 AU - Patterson, Robert Earl AU - Pierce, Byron J. AU - Bell, Herbert H. AU - Klein, Gary T1 - Implicit learning, tacit knowledge, expertise development, and naturalistic decision making. JF - Journal of Cognitive Engineering and Decision Making JO - Journal of Cognitive Engineering and Decision Making JA - J Cogn Eng Decis Mak Y1 - 2010/12// VL - 4 IS - 4 SP - 289 EP - 303 CY - US PB - Sage Publications SN - 1555-3434 AD - Patterson, Robert Earl, Air Force Research Laboratory, WPAFB, 2255 H street, Dayton, OH, US, 45433 N1 - Accession Number: 2014-12418-003. Partial author list: First Author & Affiliation: Patterson, Robert Earl; Immersive Environments Branch, Warfighter Readiness Research Division, 711th Human Performance Wing, Air Force Research Laboratory, Mesa, AZ, US. Release Date: 20140602. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Decision Support Systems; Implicit Learning. Minor Descriptor: Statistical Variables; Knowledge (General). Classification: Learning & Memory (2343); Human Factors Engineering (4010). Population: Human (10). References Available: Y. Page Count: 15. Issue Publication Date: Dec, 2010. AB - Implicit learning involves the largely unconscious learning of dynamic statistical patterns and features, which leads to the development of tacit knowledge. This kind of learning is a ubiquitous, robust phenomenon that likely occurs in most, if not all, tasks in which individuals engage throughout their lives. In this paper, we argue that implicit learning and its end state, tacit knowledge, may assist in the acquisition, retention, and transfer of expertise and thus provide a form of tacit scaffolding for expertise development. The notion of tacit scaffolding represents a novel and interesting area of future research for the field of naturalistic decision making and naturalistic cognition. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - implicit learning KW - tacit knowledge KW - expertise development KW - naturalistic decision making KW - statistical patterns KW - 2010 KW - Decision Support Systems KW - Implicit Learning KW - Statistical Variables KW - Knowledge (General) KW - 2010 U1 - Sponsor: US Air Force, US. Grant: FA8650-05-D6502. Other Details: Task Order 0037, to Link Simulation and Training, L3 Communications. Recipients: No recipient indicated DO - 10.1177/155534341000400403 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-12418-003&site=ehost-live&scope=site UR - robert.patterson@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 108091309 T1 - A Meta-Analytic Examination of Hardiness. AU - Eschleman, Kevin J. AU - Bowling, Nathan A. AU - Alarcon, Gene M. Y1 - 2010/11// N1 - Accession Number: 108091309. Language: English. Entry Date: 20130116. Revision Date: 20150712. Publication Type: Journal Article; meta analysis; research; tables/charts. Journal Subset: Biomedical; Blind Peer Reviewed; Editorial Board Reviewed; Peer Reviewed; USA. Special Interest: Evidence-Based Practice; Psychiatry/Psychology. NLM UID: 9421570. KW - Hardiness KW - Personality KW - Human KW - Meta Analysis KW - Stress KW - Support, Psychosocial KW - Coping KW - Medline KW - Psycinfo KW - Psychological Well-Being KW - Health Behavior KW - Regression KW - Depression KW - Job Satisfaction SP - 277 EP - 307 JO - International Journal of Stress Management JF - International Journal of Stress Management JA - INT J STRESS MANAGE VL - 17 IS - 4 CY - Washington, District of Columbia PB - American Psychological Association AB - Hardiness, which is a multidimensional personality trait that is hypothesized to protect people from the effects of stress, has attracted considerable research attention during the last 30 years. The current study provides a meta-analytic review of hardiness. Specifically, we examined the relationships between the hardiness facets, the relationship between hardiness and other personality variables, as well as the relationships between hardiness and several hypothesized criteria, including stressors, strains, social support, coping, and performance. Our analyses generally suggest that hardiness is: (a) positively related to other personality traits that are expected to protect people from stress, (b) negatively related to personality traits that are expected to exacerbate the effects of stress, (c) negatively related to stressors, strains, and regressive coping, and (d) positively related to social support, active coping, and performance. Regression analyses suggest that hardiness is significantly related to important criteria after the effects of other personality traits (e.g., the Five Factor Model traits) are controlled. SN - 1072-5245 AD - Wright State University AD - Air Force Research Laboratory, Dayton, OH DO - 10.1037/a0020476 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=108091309&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Foster, Craig A.1 AU - Foster, Joshua D.2 AU - Campbell, W. Keith3 T1 - Are Secret Relationships Hot, Then Not? Romantic Secrecy as a Function of Relationship Duration. JO - Journal of Social Psychology JF - Journal of Social Psychology J1 - Journal of Social Psychology PY - 2010/11//Nov/Dec2010 Y1 - 2010/11//Nov/Dec2010 VL - 150 IS - 6 CP - 6 M3 - Article SP - 668 EP - 688 SN - 00224545 AB - Are secret romances alluring or aversive? One theory suggests that romantic secrecy increases obsessive preoccupation with romantic partners and thereby enhances romantic relationships. Another theory suggests that romantic secrecy is burdensome and thereby undermines romantic relationships. We sought to rectify these conflicting perspectives by examining romantic secrecy and relationship duration using a large, Internet-based sample (N = 564). We predicted that romantic secrecy would have a positive influence in newer romantic relationships (obsessive preoccupation theory) and a negative influence in older romantic relationships (burden theory). In contrast, the obtained results indicate that romantic secrecy is a burden to both new and old romantic relationships [ABSTRACT FROM AUTHOR] KW - Correlation (Statistics) KW - Interpersonal relations KW - Secrecy -- Psychological aspects KW - Relationship duration KW - Social psychology -- Methodology KW - Internet surveys N1 - Accession Number: 55028027; Authors:Foster, Craig A. 1; Foster, Joshua D. 2; Campbell, W. Keith 3; Affiliations: 1: United States Air Force Academy,; 2: University of South Alabama,; 3: University of Georgia,; Subject: Correlation (Statistics); Subject: Secrecy -- Psychological aspects; Subject: Relationship duration; Subject: Interpersonal relations; Subject: Social psychology -- Methodology; Subject: Internet surveys; Author-Supplied Keyword: attraction; Author-Supplied Keyword: romantic relationships; Author-Supplied Keyword: romantic secrecy; Number of Pages: 21p; Illustrations: 3 Charts; Record Type: Article L3 - 10.1080/00224540903365547 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=55028027&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR AU - Iyer, Nandini AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Effects of target-masker contextual similarity on the multimasker penalty in a three-talker diotic listening task. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2010/11// VL - 128 IS - 5 M3 - Article SP - 2998 EP - 3010 SN - 00014966 AB - In many multitalker listening tasks, the degradation in performance that occurs when the number of interfering talkers increases from one to two is much larger than would be predicted from the corresponding decrease in the signal-to-noise ratio (SNR). In this experiment, a variety of contextually-relevant speech maskers, contextually-irrelevant speech maskers and non-speech maskers were used to examine the impact that the characteristics of the interfering sound sources have on the magnitude of this 'multimasker penalty.' The results show that a significant multimasker penalty only occurred in cases where two specific conditions were met: 1) the stimulus contained at least one contextually-relevant masker that could be confused with the target; and 2) the signal-to-noise ratio of the target relative to the combined masker stimulus was less than 0 dB. Remarkably, in cases where one masker was contextually relevant, the specific characteristics of the second masker had virtually no impact on the size of the multimasker penalty. Indeed, when the results were corrected for random guessing, there was essentially no difference in performance between conditions with three contextually-relevant talkers and those with two contextually-relevant talkers and one irrelevant talker. The results of a second experiment suggest that the listeners are generally able to hear keywords spoken by all three talkers even in situations where the multimasker penalty occurs, implying that the primary cause of the penalty is a degradation in the listener's ability to use prosodic cues and voice characteristics to link together words spoken at different points in the target phrase. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LISTENING -- Ability testing KW - AUDITORY masking KW - SIGNAL-to-noise ratio KW - SPEECH perception KW - PROSODIC analysis (Linguistics) N1 - Accession Number: 55441653; Iyer, Nandini 1; Email Address: nandini.Iyer@wpafb.af.mil; Brungart, Douglas S. 1; Simpson, Brian D. 1; Affiliations: 1 : Battlespace Acoustics Branch, Air Force Research Laboratory, 2610 Seventh Street, Wright Patterson Air Force Base, Ohio 45433-7901; Source Info: Nov2010, Vol. 128 Issue 5, p2998; Subject Term: LISTENING -- Ability testing; Subject Term: AUDITORY masking; Subject Term: SIGNAL-to-noise ratio; Subject Term: SPEECH perception; Subject Term: PROSODIC analysis (Linguistics); Number of Pages: 13p; Illustrations: 1 Diagram, 7 Charts, 5 Graphs; Document Type: Article L3 - 10.1121/1.3479547 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=55441653&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR ID - 104937923 T1 - Why preoperative acuity predicts postoperative acuity in wavefront-guided LASIK. AU - Aaron MT AU - Applegate RA AU - Porter J AU - Thibos LN AU - Schallhorn SC AU - Brunstetter TJ AU - Tanzer DJ AU - Aaron, Michelle T AU - Applegate, Raymond A AU - Porter, Jason AU - Thibos, Larry N AU - Schallhorn, Steve C AU - Brunstetter, Tyson J AU - Tanzer, David J Y1 - 2010/11//2010 Nov N1 - Accession Number: 104937923. Language: English. Entry Date: 20110318. Revision Date: 20161116. Publication Type: journal article; research. Journal Subset: Biomedical; Peer Reviewed; USA. Grant Information: P30 EY07551/EY/NEI NIH HHS/United States. NLM UID: 8904931. KW - Corneal Topography KW - Keratomileusis, Laser in Situ KW - Myopia -- Physiopathology KW - Myopia -- Therapy KW - Postoperative Period KW - Preoperative Period KW - Visual Acuity KW - Eyeglasses KW - Human KW - Middle Age KW - Predictive Value of Tests KW - Treatment Outcomes KW - Young Adult SP - 861 EP - 866 JO - Optometry & Vision Science JF - Optometry & Vision Science JA - OPTOM VISION SCI VL - 87 IS - 11 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - Purpose: To critically evaluate the following clinical wisdom regarding custom (wavefront-guided) laser in situ keratomileusis (LASIK) that subjects with better-than-average best-corrected visual acuity (BCVA) before surgery have a greater risk of losing BCVA postoperatively than do subjects with worse-than-average BCVA before surgery.Methods: High contrast BCVA was measured once before and 3 months after custom LASIK in one eye of 79 subjects. Preoperative spherical equivalent refractive error ranged between -1.00 and -10.38 D. The sample was divided into one of two subsamples: eyes that had better-than-average preoperative BCVA (<-0.11 logMAR) and eyes that had average or worse-than-average preoperative BCVA (≥-0.11 logMAR). Controls were implemented for retinal magnification and for the statistical phenomenon of regression to the mean of the preoperative acuity measurement.Results: On average, for the entire sample, moving the correction from the spectacle plane to the corneal plane increased letter acuity 4.7% (1 letter, 0.02 logMAR). For each subsample, the percentage regression to the mean was 57.24%. After correcting for magnification effects and regression to the mean, eyes with better-than-average preoperative acuity had a small but significant gain in acuity (∼1 letter, p = 0.040) that was nearly identical to the gain for eyes with worse-than-average preoperative acuity (∼1.5 letters, p = 0.002).Conclusions: Custom LASIK produced a statistically significant gain in visual acuity after correction for magnification effects. Dividing the sample into two subsamples based on preoperative acuity confirmed the common clinical observation that eyes with better-than-average acuity tend to remain the same or lose acuity, whereas eyes with worse-than-average acuity tend to gain acuity. However, when only one acuity measurement is taken at a single time point and the sample is subsampled nonrandomly, this clinical observation is due to a statistical artifact (regression to the mean) and is not attributable to the surgery. SN - 1040-5488 AD - United States Air Force, School of Aerospace Medicine, San Antonio, Texas, USA AD - United States Air Force, School of Aerospace Medicine, San Antonio, Texas (MTA), Visual Optics Institute, College of Optometry, University of Houston, Texas (RAA, JP), School of Optometry, Indiana University, Bloomington, Indiana (LNT), Optical Express, San Diego, California (SCS), and United States Navy, Navy Refractive Surgery Center, San Diego, California (TJB, DJT). U2 - PMID: 20871471. DO - 10.1097/OPX.0b013e3181f6fb49 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104937923&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Trickler, William J. AU - Lantz, Susan M. AU - Murdock, Richard C. AU - Schrand, Amanda M. AU - Robinson, Bonnie L. AU - Newport, Glenn D. AU - Schlager, John J. AU - Oldenburg, Steven J. AU - Paule, Merle G. AU - Slikker, William AU - Hussain, Saber M. AU - Ali, Syed F. T1 - Silver Nanoparticle Induced Blood-Brain Barrier Inflammation and Increased Permeability in Primary Rat Brain Microvessel Endothelial Cells. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 2010/11// VL - 118 IS - 1 M3 - Article SP - 160 EP - 170 PB - Oxford University Press / USA SN - 10966080 AB - The current report examines the interactions of silver nanoparticles (Ag-NPs) with the cerebral microvasculature to identify the involvement of proinflammatory mediators that can increase blood-brain barrier (BBB) permeability. Primary rat brain microvessel endothelial cells (rBMEC) were isolated from adult Sprague-Dawley rats for an in vitro BBB model. The Ag-NPs were characterized by transmission electron microscopy (TEM), dynamic light scattering, and laser Doppler velocimetry. The cellular accumulation, cytotoxicity (6.25–50 μg/cm3) and potential proinflammatory mediators (interleukin [IL]-1β, IL-2, tumor necrosis factor [TNF] α, and prostaglandin E2 [PGE2]) of Ag-NPs (25, 40, or 80 nm) were determined spectrophotometrically, cell proliferation assay (2,3-bis[2-methoxy-4-nitro-5-sulfophenyl]-2H-tetrazolium-5-carboxanilide) and ELISA. The results show Ag-NPs–induced cytotoxic responses at lower concentrations for 25 and 40 nm when compared with 80-nm Ag-NPs. The proinflammatory responses in this study demonstrate both Ag-NPs size and time-dependent profiles, with IL-1B preceding both TNF and PGE2 for 25 nm. However, larger Ag-NPs (40 and 80 nm) induced significant TNF responses at 4 and 8 h, with no observable PGE2 response. The increased fluorescein transport observed in this study clearly indicates size-dependent increases in BBB permeability correlated with the severity of immunotoxicity. Together, these data clearly demonstrate that larger Ag-NPs (80 nm) had significantly less effect on rBMEC, whereas the smaller particles induced significant effects on all the end points at lower concentrations and/or shorter times. Further, this study suggests that Ag-NPs may interact with the cerebral microvasculature producing a proinflammatory cascade, if left unchecked; these events may further induce brain inflammation and neurotoxicity. [ABSTRACT FROM AUTHOR] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERMEABILITY KW - Colloidal silver KW - Nanoparticles KW - Blood-brain barrier KW - Inflammation KW - Rats as laboratory animals KW - Neurotoxicology KW - Blood-vessels KW - Brain -- Blood-vessels KW - blood-brain barrier KW - neuroinflamation KW - neurotoxicity KW - rat brain microvessel endothelial cells KW - silver nanoparticles N1 - Accession Number: 54567088; Trickler, William J. 1; Lantz, Susan M. 1; Murdock, Richard C. 2; Schrand, Amanda M. 2; Robinson, Bonnie L. 1; Newport, Glenn D. 1; Schlager, John J. 2; Oldenburg, Steven J. 3; Paule, Merle G. 1; Slikker, William 1; Hussain, Saber M. 2; Ali, Syed F. 1; Affiliations: 1: Neurochemistry Laboratory, Division of Neurotoxicology, National Center of Toxicological Research/Food and Drug Administration, Jefferson, Arkansas 72079; 2: Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; 3: NanoComposix, Inc., San Diego, California 92111; Issue Info: Nov2010, Vol. 118 Issue 1, p160; Thesaurus Term: PERMEABILITY; Subject Term: Colloidal silver; Subject Term: Nanoparticles; Subject Term: Blood-brain barrier; Subject Term: Inflammation; Subject Term: Rats as laboratory animals; Subject Term: Neurotoxicology; Subject Term: Blood-vessels; Subject Term: Brain -- Blood-vessels; Author-Supplied Keyword: blood-brain barrier; Author-Supplied Keyword: neuroinflamation; Author-Supplied Keyword: neurotoxicity; Author-Supplied Keyword: rat brain microvessel endothelial cells; Author-Supplied Keyword: silver nanoparticles; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 11p; Illustrations: 1 Color Photograph, 2 Charts, 7 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=54567088&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - GEN AU - LAWRENCE, DAVID T1 - Heroic Act of Witness: Dexter Filkins' Forever War. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2010/11// Y1 - 2010/11// VL - 22 IS - 1 M3 - Literary Criticism SP - 15 EP - 20 PB - US Air Force Academy English Department SN - 10466967 AB - A literary criticism of the book "The Forever War," by Dexter Filkins is presented. It describes the characteristics of the soldiers and marines that are featured in the book and examined their symbolic significance. According to the author, the book demonstrates Filkin's extraordinary power of observation. An overview of the story is also given. KW - CRITICISM KW - FOREVER War, The (Book) KW - FILKINS, Dexter KW - MILITARY personnel in literature KW - CHARACTERS & characteristics in literature N1 - Accession Number: 53956446; Source Information: 2010, Vol. 22 Issue 1, p15; Subject Term: CRITICISM; Subject Term: FOREVER War, The (Book); Subject Term: FILKINS, Dexter; Subject Term: MILITARY personnel in literature; Subject Term: CHARACTERS & characteristics in literature; Subject Term: ; Number of Pages: 6p; ; Document Type: Literary Criticism; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53956446&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - CALHOUN, BYRON T1 - Tobias Wolff's Search for Heroism. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2010/11// Y1 - 2010/11// VL - 22 IS - 1 M3 - Literary Criticism SP - 21 EP - 28 PB - US Air Force Academy English Department SN - 10466967 AB - The article traces the efforts of Tobias Wolff, author of the memoir "In Pharaoh's Army," to search for heroism. In his memoir, Wolff admits that he wanted to be a hero in the fields of military and literature. An overview of his military and literary career is presented, along with the actions he has taken in search for heroism. According to the author, Wolff wrote his memoir for therapeutic reasons and to honor those people who have died in Vietnam. KW - WOLFF, Tobias, 1945- KW - IN Pharaoh's Army (Book) KW - AUTHORS KW - MILITARY personnel KW - COURAGE KW - HEROES N1 - Accession Number: 53956447; Source Information: 2010, Vol. 22 Issue 1, p21; Subject Term: WOLFF, Tobias, 1945-; Subject Term: IN Pharaoh's Army (Book); Subject Term: AUTHORS; Subject Term: MILITARY personnel; Subject Term: COURAGE; Subject Term: HEROES; Subject Term: ; Number of Pages: 8p; ; Document Type: Literary Criticism; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53956447&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - GOOLSBY, JESSE T1 - Stepfather. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2010/11// Y1 - 2010/11// VL - 22 IS - 1 M3 - Short Story SP - 50 EP - 52 PB - US Air Force Academy English Department SN - 10466967 AB - The short story "Stepfather," by Jesse Goolsby is presented. KW - SHORT story (Literary form) KW - STEPFATHER (Short story) KW - GOOLSBY, Jesse N1 - Accession Number: 53956450; Source Information: 2010, Vol. 22 Issue 1, p50; Subject Term: SHORT story (Literary form); Subject Term: STEPFATHER (Short story); Subject Term: GOOLSBY, Jesse; Subject Term: ; Number of Pages: 3p; ; Document Type: Short Story; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53956450&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - BISHOP, JAMES GLEASON T1 - Sitting on the Veterans' Memorial at the Corner of Main Street and Route 2, July 3,1972, Not Thinking About Walter Cronkite. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2010/11// Y1 - 2010/11// VL - 22 IS - 1 M3 - Poem SP - 53 EP - 54 PB - US Air Force Academy English Department SN - 10466967 AB - The poem "Sitting on the Veterans' Memorial at the Corner of Main Street and Route 22, July 3, 1972, Not Thinking About Walter Cronkite," by James Gleason Bishop is presented. First Line: Someone was lying. Last Line: and I suspected Phillip. KW - SITTING on the Veterans' Memorial at the Corner of Main Street & Route 22, July 3, 1972, Not Thinking About Walter Cronkite (Poem) KW - BISHOP, James Gleason N1 - Accession Number: 53956451; Source Information: 2010, Vol. 22 Issue 1, p53; Subject Term: SITTING on the Veterans' Memorial at the Corner of Main Street & Route 22, July 3, 1972, Not Thinking About Walter Cronkite (Poem); Subject Term: BISHOP, James Gleason; Subject Term: ; Number of Pages: 2p; ; Document Type: Poem; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53956451&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - BISHOP, JAMES GLEASON T1 - Goodman Blodgett. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2010/11// Y1 - 2010/11// VL - 22 IS - 1 M3 - Poem SP - 55 EP - 55 PB - US Air Force Academy English Department SN - 10466967 AB - The poem "Goodman Blodgett," by James Gleason Bishop is presented. First Line: Hot summer morning. I shot; Last Line: We need so many rescues. KW - GOODMAN Blodgett (Poem) KW - BISHOP, James Gleason N1 - Accession Number: 53956452; Source Information: 2010, Vol. 22 Issue 1, p55; Subject Term: GOODMAN Blodgett (Poem); Subject Term: BISHOP, James Gleason; Subject Term: ; Number of Pages: 1p; ; Document Type: Poem; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53956452&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - BISHOP, JAMES GLEASON T1 - While Guppies Bay at the Moon. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2010/11// Y1 - 2010/11// VL - 22 IS - 1 M3 - Poem SP - 56 EP - 56 PB - US Air Force Academy English Department SN - 10466967 AB - The poem "While Guppies Bay at the Moon," by James Gleason Bishop is presented. First Line: Crouched in a gray doorway, the sold-; Last Line: plants, trying to blink--is baying at the moon. KW - WHILE Guppies Bay at the Moon (Poem) KW - BISHOP, James Gleason N1 - Accession Number: 53956453; Source Information: 2010, Vol. 22 Issue 1, p56; Subject Term: WHILE Guppies Bay at the Moon (Poem); Subject Term: BISHOP, James Gleason; Subject Term: ; Number of Pages: 1p; ; Document Type: Poem; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53956453&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - VARGISH, THOMAS T1 - Conrad's "The Secret Sharer": A Private Ethics of Leadership. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2010/11// Y1 - 2010/11// VL - 22 IS - 1 M3 - Literary Criticism SP - 107 EP - 118 PB - US Air Force Academy English Department SN - 10466967 AB - A literary criticism of the book "The Secret Sharer," by Joseph Conrad is presented. It discusses the tradeoffs and conflicts between professional and personal life when exercising practical authority and in relation to leadership. It explains the functions of leadership, along with how it was depicted in the book. An overview of the story is also given. KW - CRITICISM KW - SECRET Sharers, The (Book) KW - CONRAD, Joseph, 1857-1924 KW - LEADERSHIP in literature KW - AUTHORITY N1 - Accession Number: 53956458; Source Information: 2010, Vol. 22 Issue 1, p107; Subject Term: CRITICISM; Subject Term: SECRET Sharers, The (Book); Subject Term: CONRAD, Joseph, 1857-1924; Subject Term: LEADERSHIP in literature; Subject Term: AUTHORITY; Subject Term: ; Number of Pages: 12p; ; Document Type: Literary Criticism; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53956458&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - MOAD II, JAMES A. T1 - Our Ghost. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2010/11// Y1 - 2010/11// VL - 22 IS - 1 M3 - Short Story SP - 247 EP - 252 PB - US Air Force Academy English Department SN - 10466967 AB - The short story "Our Ghost," by James A. Moad II is presented. KW - SHORT story (Literary form) KW - OUR Ghost (Short story) KW - MOAD, James A. N1 - Accession Number: 53956477; Source Information: 2010, Vol. 22 Issue 1, p247; Subject Term: SHORT story (Literary form); Subject Term: OUR Ghost (Short story); Subject Term: MOAD, James A.; Subject Term: ; Number of Pages: 6p; ; Document Type: Short Story; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53956477&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - GRESHAM, ROSS T1 - The Memory Hole is Us. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2010/11// Y1 - 2010/11// VL - 22 IS - 1 M3 - Opinion SP - 271 EP - 280 PB - US Air Force Academy English Department SN - 10466967 AB - The author discusses Jon Krakauer's "Where Men Win Glory: The Odyssey of Pat Tillman," a recount of the life, career and death of Private Pat Tillman. Tillman gave up his career as a professional football player to enlist in the U.S. Army. The author comments on the structure of the book, and describes it as difficult to read. He also criticizes Kraukauer's decision to choose such title for the book. KW - WHERE Men Win Glory: The Odyssey of Pat Tillman (Book) KW - TILLMAN, Pat, 1976-2004 KW - KRAKAUER, Jon, 1954- KW - FOOTBALL players KW - MILITARY personnel -- United States KW - BOOKS -- Evaluation N1 - Accession Number: 53956484; Source Information: 2010, Vol. 22 Issue 1, p271; Subject Term: WHERE Men Win Glory: The Odyssey of Pat Tillman (Book); Subject Term: TILLMAN, Pat, 1976-2004; Subject Term: KRAKAUER, Jon, 1954-; Subject Term: FOOTBALL players; Subject Term: MILITARY personnel -- United States; Subject Term: BOOKS -- Evaluation; Subject Term: ; Number of Pages: 10p; ; Document Type: Opinion; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53956484&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - BISHOP, JAMES GLEASON T1 - "We Should Know These People We Bury in the Earth": Brian Turner's Radical Message. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2010/11// Y1 - 2010/11// VL - 22 IS - 1 M3 - Book Review SP - 299 EP - 306 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews two poetry books by Brian Turner, including "Here, Bullet" and "Phantom Noise." KW - HERE, Bullet (Book) KW - PHANTOM Noise (Book) KW - TURNER, Brian KW - POETRY collections N1 - Accession Number: 53956487; Source Information: 2010, Vol. 22 Issue 1, p299; Subject Term: HERE, Bullet (Book); Subject Term: PHANTOM Noise (Book); Subject Term: TURNER, Brian; Subject Term: POETRY collections; Subject Term: ; Number of Pages: 8p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53956487&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - DONOVAN, JOHN T1 - The War on Terror and American Popular Culture. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2010/11// Y1 - 2010/11// VL - 22 IS - 1 M3 - Book Review SP - 319 EP - 322 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "The War on Terror and American Popular Culture," edited by Andrew Schopp and Matthew Hill. KW - WAR on Terror & American Popular Culture, The (Book) KW - SCHOPP, Andrew KW - HILL, Matthew KW - COUNTERTERRORISM KW - NONFICTION N1 - Accession Number: 53956491; Source Information: 2010, Vol. 22 Issue 1, p319; Subject Term: WAR on Terror & American Popular Culture, The (Book); Subject Term: SCHOPP, Andrew; Subject Term: HILL, Matthew; Subject Term: COUNTERTERRORISM; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 4p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53956491&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - ZIMMERMANN, JASON T1 - The Marne, 1914: The Opening of World War I and the Battle that Changed the World. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2010/11// Y1 - 2010/11// VL - 22 IS - 1 M3 - Book Review SP - 327 EP - 328 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "The Marne, 1914: The Opening of World War I and the Battle That Changed the World," by Holger H. Herwig. KW - MARNE 1914: The Opening of World War I & the Battle That Changed the World, The (Book) KW - HERWIG, Holger H. KW - WORLD War, 1914-1918 KW - NONFICTION N1 - Accession Number: 53956493; Source Information: 2010, Vol. 22 Issue 1, p327; Subject Term: MARNE 1914: The Opening of World War I & the Battle That Changed the World, The (Book); Subject Term: HERWIG, Holger H.; Subject Term: WORLD War, 1914-1918; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53956493&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - JONES, BENJAMIN F. T1 - Valley of Death: The Tragedy at Dien Bien Phu That Led America into the Vietnam War. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2010/11// Y1 - 2010/11// VL - 22 IS - 1 M3 - Book Review SP - 329 EP - 331 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "Valley of Death: The Tragedy at Dien Bien Phu That Led America Into the Vietnam War," by Ted Morgan. KW - VALLEY of Death: The Tragedy at Dien Bien Phu That Led America Into the Vietnam War (Book) KW - MORGAN, Ted, 1932- KW - VIETNAM War, 1961-1975 KW - NONFICTION N1 - Accession Number: 53956494; Source Information: 2010, Vol. 22 Issue 1, p329; Subject Term: VALLEY of Death: The Tragedy at Dien Bien Phu That Led America Into the Vietnam War (Book); Subject Term: MORGAN, Ted, 1932-; Subject Term: VIETNAM War, 1961-1975; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53956494&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - BALDWIN, MIRANDA S. T1 - Citizens of London: The Americans Who Stood with Britain in its Darkest, Finest Hour. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2010/11// Y1 - 2010/11// VL - 22 IS - 1 M3 - Book Review SP - 332 EP - 333 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "Citizens of London: The Americans Who Stood With Britain in Its Darkest, Finest Hour," by Lynne Olson. KW - CITIZENS of London: The Americans Who Stood With Britain in Its Darkest, Finest Hour (Book) KW - OLSON, Lynne KW - INTERNATIONAL relations KW - NONFICTION N1 - Accession Number: 53956495; Source Information: 2010, Vol. 22 Issue 1, p332; Subject Term: CITIZENS of London: The Americans Who Stood With Britain in Its Darkest, Finest Hour (Book); Subject Term: OLSON, Lynne; Subject Term: INTERNATIONAL relations; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53956495&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - ABBATIELLO, JOHN J. T1 - No Less Than Victory. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2010/11// Y1 - 2010/11// VL - 22 IS - 1 M3 - Book Review SP - 334 EP - 334 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "No Less Than Victory," by Jeff Shaara. KW - NO Less Than Victory (Book) KW - SHAARA, Jeff KW - WAR KW - NONFICTION N1 - Accession Number: 53956496; Source Information: 2010, Vol. 22 Issue 1, p334; Subject Term: NO Less Than Victory (Book); Subject Term: SHAARA, Jeff; Subject Term: WAR; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 1p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53956496&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - MOAD, JAMES A. T1 - Warrior Writers: Re-Making Sense. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2010/11// Y1 - 2010/11// VL - 22 IS - 1 M3 - Book Review SP - 335 EP - 337 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "Warrior Writers: Re-Making Sense," edited by Lovella Calica. KW - WARRIOR Writers: Re-Making Sense (Book) KW - CALICA, Lovella KW - IRAQ War, 2003-2011 KW - NONFICTION N1 - Accession Number: 53956497; Source Information: 2010, Vol. 22 Issue 1, p335; Subject Term: WARRIOR Writers: Re-Making Sense (Book); Subject Term: CALICA, Lovella; Subject Term: IRAQ War, 2003-2011; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53956497&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - PASQUANTONIO, SONJA K. T1 - Clamor. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2010/11// Y1 - 2010/11// VL - 22 IS - 1 M3 - Book Review SP - 338 EP - 340 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "Clamor," by Elyse Fenton. KW - CLAMOR (Book) KW - FENTON, Elyse KW - POETRY (Literary form) KW - POETRY collections N1 - Accession Number: 53956498; Source Information: 2010, Vol. 22 Issue 1, p338; Subject Term: CLAMOR (Book); Subject Term: FENTON, Elyse; Subject Term: POETRY (Literary form); Subject Term: POETRY collections; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53956498&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2010-23921-001 AN - 2010-23921-001 AU - Eschleman, Kevin J. AU - Bowling, Nathan A. AU - Alarcon, Gene M. T1 - A meta-analytic examination of hardiness. JF - International Journal of Stress Management JO - International Journal of Stress Management JA - Int J Stress Manag Y1 - 2010/11// VL - 17 IS - 4 SP - 277 EP - 307 CY - US PB - Educational Publishing Foundation SN - 1072-5245 SN - 1573-3424 AD - Eschleman, Kevin J., Department of Psychology, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH, US, 45435-0001 N1 - Accession Number: 2010-23921-001. Partial author list: First Author & Affiliation: Eschleman, Kevin J.; Department of Psychology, Wright State University, Dayton, OH, US. Other Publishers: Kluwer Academic/Human Sciences Press. Release Date: 20101122. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Coping Behavior; Health; Personality Traits; Resilience (Psychological); Stress. Classification: Personality Traits & Processes (3120). Population: Human (10). Methodology: Meta Analysis. Supplemental Data: Appendixes Internet. References Available: Y. Page Count: 31. Issue Publication Date: Nov, 2010. Copyright Statement: American Psychological Association. 2010. AB - Hardiness, which is a multidimensional personality trait that is hypothesized to protect people from the effects of stress, has attracted considerable research attention during the last 30 years. The current study provides a meta-analytic review of hardiness. Specifically, we examined the relationships between the hardiness facets, the relationship between hardiness and other personality variables, as well as the relationships between hardiness and several hypothesized criteria, including stressors, strains, social support, coping, and performance. Our analyses generally suggest that hardiness is: (a) positively related to other personality traits that are expected to protect people from stress, (b) negatively related to personality traits that are expected to exacerbate the effects of stress, (c) negatively related to stressors, strains, and regressive coping, and (d) positively related to social support, active coping, and performance. Regression analyses suggest that hardiness is significantly related to important criteria after the effects of other personality traits (e.g., the Five Factor Model traits) are controlled. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - hardiness KW - health KW - meta-analysis KW - personality variables KW - stress KW - coping KW - 2010 KW - Coping Behavior KW - Health KW - Personality Traits KW - Resilience (Psychological) KW - Stress KW - 2010 DO - 10.1037/a0020476 L3 - 10.1037/a0020476.supp (Supplemental) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-23921-001&site=ehost-live&scope=site UR - eschleman.2@wright.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-24528-003 AN - 2010-24528-003 AU - Arthur, Winfred Jr. AU - Day, Eric Anthony AU - Villado, Anton J. AU - Boatman, Paul R. AU - Kowollik, Vanessa AU - Bennett, Winston Jr. AU - Bhupatkar, Alok T1 - The effect of distributed practice on immediate posttraining, and long-term performance on a complex command-and-control simulation task. JF - Human Performance JO - Human Performance Y1 - 2010/11// VL - 23 IS - 5 SP - 428 EP - 445 CY - United Kingdom PB - Taylor & Francis SN - 0895-9285 SN - 1532-7043 AD - Arthur, Winfred Jr., Department of Psychology, Texas A&M University, 4235, College Station, TX, US, 77843-4235 N1 - Accession Number: 2010-24528-003. Partial author list: First Author & Affiliation: Arthur, Winfred Jr.; Texas A&M University, College Station, TX, US. Other Publishers: Lawrence Erlbaum. Release Date: 20110321. Correction Date: 20120618. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Distributed Practice; Job Performance; Personnel Training; Task Complexity. Minor Descriptor: Practice; Simulation. Classification: Industrial & Organizational Psychology (3600). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study; Scientific Simulation. References Available: Y. Page Count: 18. Issue Publication Date: Nov, 2010. Copyright Statement: Taylor & Francis Group, LLC AB - Using 192 paid participants who trained on a command-and-control microworld simulation, we examined the comparative effectiveness of two distributed practice schedules in enhancing performance at the end of training as well as after an 8-week nonuse period. Longer interstudy intervals (10 hr of practice over 2 weeks) led to higher levels of skill at the end of training and after nonuse than shorter interstudy intervals (10 hr of practice over 1 week). The study begins to address gaps in the skill retention literature by using a cognitively complex task and an extended nonuse interval. The primary implication of our findings is that scheduling longer interstudy practice intervals is a viable means of enhancing immediate posttraining performance and promoting long-term skill retention for cognitively complex tasks. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - training KW - long term performance KW - command and control simulation task KW - distributed practice KW - 2010 KW - Distributed Practice KW - Job Performance KW - Personnel Training KW - Task Complexity KW - Practice KW - Simulation KW - 2010 U1 - Sponsor: National Science Foundation. Recipients: No recipient indicated U1 - Sponsor: Defense Advanced Research Projects Agency. Recipients: No recipient indicated U1 - Sponsor: Air Force Research Laboratorry, Human Effectiveness Directorate. Recipients: No recipient indicated DO - 10.1080/08959285.2010.515277 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-24528-003&site=ehost-live&scope=site UR - w-arthur@neo.tamu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Phillips, David M. AU - Baur, Jeffery W. T1 - A Granular Core for Self-healing, Variable Modulus Sandwich Composites. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2010/10/15/ VL - 44 IS - 22 M3 - Article SP - 2527 EP - 2545 SN - 00219983 AB - Sandwich composites that exhibit complete mechanical and geometric healing when subjected to three-point bending are realized using a novel, pressure-triggered granular core. The sandwich composites are constructed with fiberglass-reinforced, epoxy face sheets and a granular core consisting of noncohesive, glass microballoons. By controlling the granular core hydrostatic compression in the range of 0—0.083 MPa, the observed shear modulus of the core spanned nearly three orders of magnitude. Core compression is achieved by evacuating the interior of the sandwich structure and allowing the atmospheric pressure acting on the sandwich to compress the core. Although the compressed cores typically begin to yield near 1% shear strain, the degenerate nature of the core allows for complete recovery of the modulus even after a large strain. By exploiting the inherent stiffness of the sandwich skin and the tunable modulus of the granular core, these sandwich composites are able to undergo healing cycles and completely recover both their mechanical and geometric properties. [ABSTRACT FROM PUBLISHER] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - adaptive structures KW - microballoons KW - morphing KW - sandwich composites KW - self-healing N1 - Accession Number: 54489111; Phillips, David M. 1; Baur, Jeffery W. 2; Source Information: 10/15/2010, Vol. 44 Issue 22, p2527; Author-Supplied Keyword: adaptive structures; Author-Supplied Keyword: microballoons; Author-Supplied Keyword: morphing; Author-Supplied Keyword: sandwich composites; Author-Supplied Keyword: self-healing; Number of Pages: 19p; Document Type: Article; Full Text Word Count: 6608 L3 - 10.1177/0021998310371531 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=54489111&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Barrows, Stephen P. T1 - The Law of Population and the Austrian School. JO - American Journal of Economics & Sociology JF - American Journal of Economics & Sociology Y1 - 2010/10// VL - 69 IS - 4 M3 - Article SP - 1178 EP - 1205 SN - 00029246 AB - There has been considerable debate within the social sciences about the consequences of rapid population growth. The law of population, as described by Thomas Robert Malthus, asserts that population growth is ultimately limited by the means of subsistence, and therefore preventive checks on population growth (e.g., voluntarily limiting the number of births) are necessary to avoid the grim prospect of inevitable human suffering when the means of subsistence cannot support the population. Economists, demographers, and other social scientists have produced volumes of exegesis on Malthus's work. This article assesses how representative economists of the Austrian School have interacted with Malthus's law of population. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Economics & Sociology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POPULATION research KW - SUSTAINABILITY KW - AUSTRIAN school of economics KW - MALTHUSIANISM KW - POPULATION -- Economic aspects KW - SCHOOLS of economics KW - POPULATION -- Environmental aspects KW - POPULATION -- Mathematical models KW - MALTHUS, T. R. (Thomas Robert), 1766-1834 KW - SAY, Jean-Baptiste KW - BASTIAT, Frederic, 1801-1850 KW - ESSAY on the Principle of Population, An (Book : Malthus) N1 - Accession Number: 54300940; Barrows, Stephen P. 1; Affiliations: 1 : Department of Economics and Geosciences, The United States Air Force Academy, Colorado; Source Info: Oct2010, Vol. 69 Issue 4, p1178; Historical Period: ca 1860 to ca 2000; 1766 to 1834; Subject Term: POPULATION research; Subject Term: SUSTAINABILITY; Subject Term: AUSTRIAN school of economics; Subject Term: MALTHUSIANISM; Subject Term: POPULATION -- Economic aspects; Subject Term: SCHOOLS of economics; Subject Term: POPULATION -- Environmental aspects; Subject Term: POPULATION -- Mathematical models; Number of Pages: 28p; Document Type: Article L3 - 10.1111/j.1536-7150.2010.00740.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hia&AN=54300940&site=ehost-live&scope=site DP - EBSCOhost DB - hia ER - TY - JOUR AU - Ombrello, Timothy AU - Won, Sang Hee AU - Ju, Yiguang AU - Williams, Skip T1 - Flame propagation enhancement by plasma excitation of oxygen. Part I: Effects of O3 JO - Combustion & Flame JF - Combustion & Flame Y1 - 2010/10// VL - 157 IS - 10 M3 - Article SP - 1906 EP - 1915 SN - 00102180 AB - Abstract: The thermal and kinetic effects of O3 on flame propagation were investigated experimentally and numerically by using C3H8/O2/N2 laminar lifted flames. Ozone produced by a dielectric barrier plasma discharge was isolated and measured quantitatively by using absorption spectroscopy. Significant kinetic enhancement by O3 was observed by comparing flame stabilization locations with and without O3 production. Experiments at atmospheric pressures showed an 8% enhancement in the flame propagation speed for 1260ppm of O3 addition to the O2/N2 oxidizer. Numerical simulations showed that the O3 decomposition and reaction with H early in the pre-heat zone of the flame produced O and OH, respectively, from which the O reacted rapidly with C3H8 and produced additional OH. The subsequent reaction of OH with the fuel and fuel fragments, such as CH2O, provided chemical heat release at lower temperatures to enhance the flame propagation speed. It was shown that the kinetic effect on flame propagation enhancement by O3 reaching the pre-heat zone of the flame for early oxidation of fuel was much greater than that by the thermal effect from the energy contained within O3. For non-premixed laminar lifted flames, the kinetic enhancement by O3 also induced changes to the hydrodynamics at the flame front which provided additional enhancement of the flame propagation speed. The present results will have a direct impact on the development of detailed plasma-flame kinetic mechanisms and provided a foundation for the study of combustion enhancement by O2(a 1 Δg ) in part II of this investigation. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Oxygen KW - Absorption spectra KW - Atmospheric pressure KW - Computer simulation KW - Plasma (Ionized gases) KW - Flame KW - Thermal analysis KW - Chemical kinetics KW - Temperature effect KW - Flame propagation enhancement KW - Flame speed enhancement KW - Lifted flame KW - Ozone KW - Plasma-assisted combustion KW - Tribrachial flame N1 - Accession Number: 53053023; Ombrello, Timothy 1; Email Address: timothy.ombrello@wpafb.af.mil; Won, Sang Hee 1; Email Address: sangwon@princeton.edu; Ju, Yiguang 1; Email Address: yju@princeton.edu; Williams, Skip 2; Email Address: skip.williams@maui.afmc.af.mil; Affiliations: 1: Department of Mechanical and Aerospace Engineering, Engineering Quadrangle, Olden Street, Princeton, NJ 08544, USA; 2: Air Force Research Laboratory, Propulsion Directorate, 1950 Fifth Street, Wright-Patterson AFB, OH 45433, USA; Issue Info: Oct2010, Vol. 157 Issue 10, p1906; Thesaurus Term: Oxygen; Thesaurus Term: Absorption spectra; Thesaurus Term: Atmospheric pressure; Thesaurus Term: Computer simulation; Subject Term: Plasma (Ionized gases); Subject Term: Flame; Subject Term: Thermal analysis; Subject Term: Chemical kinetics; Subject Term: Temperature effect; Author-Supplied Keyword: Flame propagation enhancement; Author-Supplied Keyword: Flame speed enhancement; Author-Supplied Keyword: Lifted flame; Author-Supplied Keyword: Ozone; Author-Supplied Keyword: Plasma-assisted combustion; Author-Supplied Keyword: Tribrachial flame; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.combustflame.2010.02.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=53053023&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Pilchak, A.L. AU - Young, A.H. AU - Williams, J.C. T1 - Stress corrosion cracking facet crystallography of Ti–8Al–1Mo–1V JO - Corrosion Science JF - Corrosion Science Y1 - 2010/10// VL - 52 IS - 10 M3 - Article SP - 3287 EP - 3296 SN - 0010938X AB - Abstract: The spatial and crystallographic orientations of facets formed during stress corrosion cracking of Ti–8Al–1Mo–1V have been characterized using quantitative fractography and electron backscatter diffraction. The results indicate that most facets are formed nearly perpendicular to the loading direction on irrational {h k i l} planes. The facets were imaged with high resolution scanning electron microscopy and were found to contain evidence of localized plastic flow despite their “brittle” appearance at moderate magnification. Some fracture planes were related to titanium hydride habit planes, however, the mechanism of faceted growth does not appear to involve hydride nucleation, growth, and fracture, but rather hydrogen enhanced localized plasticity. [ABSTRACT FROM AUTHOR] AB - Copyright of Corrosion Science is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Stress corrosion cracking KW - Crystallography KW - Titanium alloys KW - Scanning electron microscopy KW - Nucleation KW - Fractography KW - High resolution spectroscopy KW - Plasticity KW - Metals -- Hydrogen embrittlement KW - A. Titanium KW - B. SEM KW - C. Hydrogen embrittlement KW - C. Stress corrosion cracking N1 - Accession Number: 53053106; Pilchak, A.L. 1,2; Email Address: pilchak@matsceng.ohio-state.edu; Young, A.H. 3; Williams, J.C. 3; Affiliations: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, OH 45433, United States; 2: Universal Technology Corporation, Dayton, OH 45432, United States; 3: The Ohio State University, Department of Materials Science and Engineering, Columbus, OH 43210, United States; Issue Info: Oct2010, Vol. 52 Issue 10, p3287; Thesaurus Term: Stress corrosion cracking; Subject Term: Crystallography; Subject Term: Titanium alloys; Subject Term: Scanning electron microscopy; Subject Term: Nucleation; Subject Term: Fractography; Subject Term: High resolution spectroscopy; Subject Term: Plasticity; Subject Term: Metals -- Hydrogen embrittlement; Author-Supplied Keyword: A. Titanium; Author-Supplied Keyword: B. SEM; Author-Supplied Keyword: C. Hydrogen embrittlement; Author-Supplied Keyword: C. Stress corrosion cracking; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.corsci.2010.05.046 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=53053106&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Suri, Niranjan AU - Benincasa, Giacomo AU - Tortonesi, Mauro AU - Stefanelli, Cesare AU - Kovach, Jesse AU - Winkler, Robert AU - Kohler, U.S. AU - Hanna, James AU - Pochet, Louis AU - Watson, Scott T1 - Peer-to-peer communications for tactical environments: Observations, requirements, and experiences. JO - IEEE Communications Magazine JF - IEEE Communications Magazine Y1 - 2010/10// VL - 48 IS - 10 M3 - Article SP - 60 EP - 69 SN - 01636804 AB - Tactical edge networks present extremely challenging environments for communications given their wireless ad hoc nature and the inherent node mobility. Military applications such as Blue Force Tracking, inter-team communications, remote unmanned vehicle control, and sensor data mining/fusion thus have to deal with unstable links with limited bandwidth and variable latency. The peculiar characteristics of tactical networks call for peer-to-peer approaches to realize complex, adaptive, and fault-tolerant applications to be deployed in the battlefield. This article reports on our observations from several tactical networking experiments in which we have deployed state-of-the-art applications and services that leverage P2P communications. More specifically, we discuss why P2P approaches are critical for tactical network environments and applications. We then analyze the requirements that should be satisfied by P2P middleware for tactical environments. Finally, we discuss a case study, the Agile Computing Middleware, and present experimental results that demonstrate its effectiveness. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Communications Magazine is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 54290164; Suri, Niranjan 1; Benincasa, Giacomo 1; Tortonesi, Mauro 2; Stefanelli, Cesare 2; Kovach, Jesse 3; Winkler, Robert 3; Kohler, U.S. 4; Hanna, James 4; Pochet, Louis 5; Watson, Scott 6; Affiliations: 1: Florida Institute for Human and Machine Cognition; 2: University of Ferrara; 3: U.S. Army Research Laboratory; 4: U.S. Air Force Research Laboratory; 5: U.S. Air Force Reserves; 6: Space and Naval Warfare Systems Center, Pacific; Issue Info: Oct2010, Vol. 48 Issue 10, p60; Number of Pages: 0p; Document Type: Article L3 - 10.1109/MCOM.2010.5594678 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=54290164&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Kirawanich, Phumin AU - Pausawasdi, Nonthalee AU - Srisawat, Chatchawan AU - Yakura, Susumu J. AU - Islam, Naz E. T1 - An FDTD Interaction Scheme of a High-Intensity Nanosecond-Pulsed Electric-Field System for In Vitro Cell Apoptosis Applications. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2010/10//Oct2010 Part 1 Y1 - 2010/10//Oct2010 Part 1 VL - 38 IS - 10 M3 - Article SP - 2574 EP - 2582 SN - 00933813 AB - A finite-difference time-domain analysis of a high-intensity nanosecond-pulsed electric-field (nsPEF) system, composed of a pulse-forming line (PFL) and a universal electroporation cuvette, is described. The simulation scheme is based on interactions of 1-D transmission-line equations for the PFL and 3-D Maxwell's curl equations for the cuvette volume. Simulations incorporate system adjustment to facilitate maximum transfer of electrical energy from the PFL to the cuvette medium. Experimental validation of the voltage across the cuvette electrodes through the laboratory-constructed nsPEF system with an energy density of \sim\!\!1\ \J/\cm^3 reveals an overall agreement with some discrepancies. The distribution profiles of the transient field inside the cell suspension area during the excitation of 5-kV 10-ns pulses would adequately account for the feasibility of using an integrated model as a design benchmark for the interaction physics of the generated nanosecond pulses and culture vessel. The observed nsPEF effects on cells include increased transmembrane potentials across organelle membranes without permanently damaging the cell membrane, increasing the probability of electric field interactions with intracellular structures. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 54502659; Source Information: Oct2010 Part 1, Vol. 38 Issue 10, p2574; Number of Pages: 9p; ; Document Type: Article; L3 - 10.1109/TPS.2009.2038916 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=54502659&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Domonkos, Matthew T. AU - Heidger, Susan AU - Brown, Darwin AU - Parker, Jerald V. AU - Gregg, Carl W. AU - Slenes, Kirk AU - Hackenberger, Wes AU - Kwon, Seongtae AU - Loree, Ellis AU - Tran, Tyrone T1 - Submicrosecond Pulsed Power Capacitors Based on Novel Ceramic Technologies. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2010/10//Oct2010 Part 1 Y1 - 2010/10//Oct2010 Part 1 VL - 38 IS - 10 M3 - Article SP - 2686 EP - 2693 SN - 00933813 AB - Capacitor energy density for submicrosecond discharge applications was investigated for capacitors based on the following: 1) polymer–ceramic nanocomposite (PCNC); 2) antiferroelectric (AFE); and 3) paraelectric (PE) ceramic dielectrics. The developmental PCNC dielectric enabled design, fabrication, and testing iterations to be completed relatively rapidly. The PCNC capacitors were nominally 4 nF and were tested to dc potentials of at least 75 kV. The capacitors were then charged from 20 to 48 kV with a dc high-voltage power supply and discharged into a nearly critically damped test circuit of up to 5 pulses/s (pps) repetition rate for lifetime testing. The discharge time was 65 ns. Shot life as a function of the charge voltage was compared for three design iterations. Changes in the manufacturing of the PCNC capacitors have yielded up to 100x improvements in pulse discharge life. The 1–2-kV prototype, nonlinear (antiferroelectric and paraelectric) multilayer ceramic capacitors had zero-voltage capacitance ratings of between 60 and 300 nF. They were charged to their operating voltage and discharged into a nearly critically damped load in 2–6 \mu\s, depending on their capacitance, at repetition rates of up to 75 pps. Their operating voltage for fast, repetitive discharge was determined for lifetimes consistently over 10^5 shots. Discharge energy densities of 0.27–1.80 J/cc and energy losses of 7.9–36.8% were obtained for the packaged multilayer capacitors with different formulations of nonlinear dielectrics. Increased field-induced strain was correlated with increased permittivity and contributed to the limitations on the operating voltage. Multilayer ceramic capacitors fabricated from AFE and PE ceramic dielectrics have the potential to achieve high energy density owing to their high relative permittivities that vary with applied electric field, assuming they can be scaled up to sufficiently high voltages. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 54502674; Source Information: Oct2010 Part 1, Vol. 38 Issue 10, p2686; Number of Pages: 8p; ; Document Type: Article; L3 - 10.1109/TPS.2010.2049124 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=54502674&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 105107929 T1 - The Influence of 8 Weeks of Whey-Protein and Leucine Supplementation on Physical and Cognitive Performance. AU - Walker TB AU - Smith J AU - Herrera M AU - Lebegue B AU - Pinchak A AU - Fischer J Y1 - 2010/10// N1 - Accession Number: 105107929. Language: English. Entry Date: 20101013. Revision Date: 20150711. Publication Type: Journal Article; clinical trial; research; tables/charts. Journal Subset: Allied Health; Biomedical; Peer Reviewed; USA. Special Interest: Nutrition; Sports Medicine. Instrumentation: Continuous Performance Test (CPT); Stanford Sleepiness Scale (SSS); Air Force Physical Fitness Test [modified]; Air Force Special Operations Physical Ability Stamina Test; Automated Neuropsychological Assessment Metric (Jones et al); Sternberg Memory Task. Grant Information: This study was funded in part by a grant from General Nutrition Centers, Inc.. NLM UID: 100939812. KW - Dietary Supplementation KW - Leucine -- Administration and Dosage KW - Milk Proteins -- Administration and Dosage KW - Body Composition KW - Physical Performance KW - Cognition KW - Muscle Strength KW - Human KW - Physical Fitness -- Evaluation KW - Ergogenic Products KW - Male KW - Young Adult KW - Absorptiometry, Photon KW - Clinical Assessment Tools KW - Scales KW - Diet Records KW - Repeated Measures KW - Analysis of Variance KW - T-Tests KW - Effect Size KW - Paired T-Tests KW - Chi Square Test KW - Weight Lifting KW - Aerobic Exercises KW - Outcome Assessment KW - Funding Source KW - Clinical Trials KW - Double-Blind Studies KW - Placebos SP - 409 EP - 417 JO - International Journal of Sport Nutrition & Exercise Metabolism JF - International Journal of Sport Nutrition & Exercise Metabolism JA - INT J SPORT NUTR EXERC METAB VL - 20 IS - 5 CY - Champaign, Illinois PB - Human Kinetics Publishers, Inc. AB - The purpose of this study was to investigate the ability of whey-protein and leucine supplementation to enhance physical and cognitive performance and body composition. Thirty moderately fit participants completed a modified Air Force fitness test, a computer-based cognition test, and a dual-energy X-ray-absorptiometry scan for body composition before and after supplementing their daily diet for 8 wk with either 19.7 g of whey protein and 6.2 g leucine (WPL) or a calorie-equivalent placebo (P). Bench-press performance increased significantly from Week 1 to Week 8 in the WPL group, whereas the increase in the P group was not significant. Push-up performance increased significantly for WPL, and P showed a nonsignificant increase. Total mass, fat-free mass, and lean body mass all increased significantly in the WPL group but showed no change in the P group. No differences were observed within or between groups for crunches, chin-ups, 3-mile-run time, or cognition. The authors conclude that supplementing with whey protein and leucine may provide an advantage to people whose performance benefits from increased upper body strength and/or lean body mass. SN - 1526-484X AD - Air Force Research Laboratory, Brooks Air Force Base, San Antonio, TX UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105107929&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - The Influence of 8 Weeks of Whey-Protein and Leucine Supplementation on Physical and Cognitive Performance. AU - Walker, Thomas B. AU - Smith, Jessica AU - Herrera, Monica AU - Lebegue, Breck AU - Pinchak, Andrea AU - Fischer, Joseph JO - International Journal of Sport Nutrition & Exercise Metabolism JF - International Journal of Sport Nutrition & Exercise Metabolism Y1 - 2010/10// VL - 20 IS - 5 SP - 409 EP - 417 SN - 1526484X N1 - Accession Number: 53951876; Author: Walker, Thomas B.: 1 Author: Smith, Jessica: 1 Author: Herrera, Monica: 1 Author: Lebegue, Breck: 1 Author: Pinchak, Andrea: 1 Author: Fischer, Joseph: 2 ; Author Affiliation: 1 Air Force Research Laboratory, Brooks Air Force Base, San Antonio, TX: 2 General Dynamics Advanced Information Services, San Antonio; No. of Pages: 9; Language: English; Publication Type: Article; Update Code: 20100928 N2 - The purpose of this study was to investigate the ability of whey-protein and leucine supplementation to enhance physical and cognitive performance and body composition. Thirty moderately fit participants completed a modified Air Force fitness test, a computer-based cognition test, and a dual-energy X-ray-absorptiometry scan for body composition before and after supplementing their daily diet for 8 wk with either 19.7 g of whey protein and 6.2 g leucine (WPL) or a calorie-equivalent placebo (P). Bench-press performance increased significantly from Week 1 to Week 8 in the WPL group, whereas the increase in the P group was not significant. Push-up performance increased significantly for WPL, and P showed a nonsignificant increase. Total mass, fat-free mass, and lean body mass all increased significantly in the WPL group but showed no change in the P group. No differences were observed within or between groups for crunches, chin-ups, 3-mile-run time, or cognition. The authors conclude that supplementing with whey protein and leucine may provide an advantage to people whose performance benefits from increased upper body strength and/or lean body mass. ABSTRACT FROM AUTHOR KW - *PHYSICAL fitness KW - *AEROBIC exercises KW - *BODY composition KW - *COGNITION KW - *DIETARY supplements KW - *LEUCINE KW - *MUSCLE strength KW - *PLACEBOS (Medicine) KW - *WEIGHT lifting KW - *ERGOGENIC aids KW - *BODY movement KW - *ADMINISTRATION of drugs KW - *DOSAGE of drugs KW - EVALUATION KW - ANALYSIS of variance KW - CHI-squared test KW - CLINICAL trials KW - MILK proteins KW - NURSING assessment KW - OUTCOME assessment (Medical care) KW - RESEARCH -- Finance KW - T-test (Statistics) KW - X-ray densitometry in medicine KW - SCALE items KW - EFFECT sizes (Statistics) KW - REPEATED measures design KW - BLIND experiment KW - FOOD diaries KW - body composition KW - ergogenics KW - exercise KW - nutritional supplementation UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=53951876&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Wilson, Andrew T1 - Frey . Beuger duos. JO - ITG Journal JF - ITG Journal Y1 - 2010/10// VL - 35 IS - 1 M3 - Entertainment Review SP - 82 EP - 82 SN - 03632849 AB - The article reviews the music release "Frey. Beuger duos," performed by the duo Contour. KW - TRUMPET music (Jazz) -- Reviews KW - DUO Contour (Performer) KW - FREY/BEUGER Duos (Music) N1 - Accession Number: 54426693; Wilson, Andrew 1; Affiliations: 1 : Principal and solo cornet, United States Air Force Band, Washington, DC; Source Info: Oct2010, Vol. 35 Issue 1, p82; Subject Term: TRUMPET music (Jazz) -- Reviews; Number of Pages: 1/4p; Document Type: Entertainment Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=54426693&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR ID - 105117563 T1 - Predictive Validity of the Air Force Officer Qualifying Test for Non-Rated Officer Specialties. AU - Carretta TR Y1 - 2010/10//Oct-Dec2010 N1 - Accession Number: 105117563. Language: English. Entry Date: 20101101. Revision Date: 20150711. Publication Type: Journal Article; equations & formulas; research; tables/charts. Journal Subset: Biomedical; Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services; Psychiatry/Psychology. Instrumentation: Air Force Officer Qualifying Test (AFOQT). NLM UID: 8915802. KW - Instrument Validation KW - Military Personnel KW - Human KW - Questionnaires KW - Correlation Coefficient KW - Reliability SP - 450 EP - 464 JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) JA - MILIT PSYCHOL VL - 22 IS - 4 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - The Air Force Officer Qualifying Test (AFOQT) is used to qualify applicants for officer commissioning and aircrew training programs. The current study examined its predictive validity for 14 officer technical training courses for which there are no additional AFOQT minimum qualification requirements beyond those for officer commissioning. Sample sizes ranged from 16 to 2,190 with a mean and median size of 753 and 319 officers. Ninety percent (63 of 70) of the observed correlations between the AFOQT composites and average technical training grades were statistically significant. Meta-analyses were conducted to determine whether the AFOQT validities were generalizable across training specialties. Analyses were done on the observed data, after correction for range restriction, and after correction for both range restriction and criterion unreliability. The pattern of validities was similar for all three meta-analyses. The lower bound of the 95% confidence interval and the 95% credibility interval around the weighted mean validities were greater than zero for all five AFOQT composites supporting its utility for making personnel selection decisions for these jobs. The Verbal composite had the lowest and the Academic Aptitude composite had the highest weighted mean validity. The weighted mean of the validity coefficients across training specialties ranged from .261 to .326 for the observed data, .322 to .387 for the range-restriction corrected data, and .360 to .433 for the fully corrected data. Additional efforts are required to examine the generalizability of the results for a broader range of occupational specialties and to set minimum qualifying scores. SN - 0899-5605 AD - Air Force Research Laboratory, Wright-Patterson AFB, Ohio DO - 10.1080/08995605.2010.513261 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105117563&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 104974054 T1 - Correlates of coparental support among married and nonmarried fathers. AU - Isacco, Anthony AU - Garfield, Craig F AU - Rogers, Timothy E Y1 - 2010/10// N1 - Accession Number: 104974054. Language: English. Entry Date: 20110128. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; USA. Special Interest: Men's Health; Psychiatry/Psychology. Instrumentation: Home Observation for Measurement of the Environment Scale (HOME) (Bradley and Caldwell); Multidimensional Support Scale (MDSS); Composite International Diagnostic Interview-Short Form (CIDI-SF) (Kessler et al). NLM UID: 100890582. KW - Fathers KW - Marriage KW - Parenting KW - Support, Psychosocial KW - Chi Square Test KW - Descriptive Statistics KW - Goodness of Fit Chi Square Test KW - Human KW - Male KW - Models, Statistical KW - Models, Theoretical KW - Multicenter Studies KW - Path Analysis KW - Scales KW - Structured Interview Guides KW - United States SP - 262 EP - 278 JO - Psychology of Men & Masculinity JF - Psychology of Men & Masculinity JA - PSYCHOL MEN MASCULINITY VL - 11 IS - 4 CY - Washington, District of Columbia PB - American Psychological Association SN - 1524-9220 AD - Counseling Psychology Program, Chatham University. Pittsburgh, PA 15232; aisacco@chatham.edu AD - NorthShore University HealthSystem Research Institute, Northwestern University AD - United States Air Force, Holloman AFB, New Mexico DO - 10.1037/a0020686 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=104974054&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2010-20912-007 AN - 2010-20912-007 AU - Sinn, David L. AU - Gosling, Samuel D. AU - Hilliard, Stewart T1 - Personality and performance in military working dogs: Reliability and predictive validity of behavioral tests. JF - Applied Animal Behaviour Science JO - Applied Animal Behaviour Science JA - Appl Anim Behav Sci Y1 - 2010/10// VL - 127 IS - 1-2 SP - 51 EP - 65 CY - Netherlands PB - Elsevier Science SN - 0168-1591 AD - Gosling, Samuel D., University of Texas, Department of Psychology, 1 University Station A8000, Austin, TX, US, 78712-0187 N1 - Accession Number: 2010-20912-007. Other Journal Title: Applied Animal Ethology. Partial author list: First Author & Affiliation: Sinn, David L.; University of Texas, Department of Psychology, Austin, TX, US. Release Date: 20101122. Correction Date: 20151207. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Gosling, Samuel D. Major Descriptor: Behavioral Assessment; Dogs; Military Psychology; Performance; Personality. Minor Descriptor: Animal Ethology; Statistical Validity; Test Reliability; Animal Personality. Classification: Social & Instinctive Behavior (2440); Military Psychology (3800). Population: Animal (20); Male (30); Female (40). Methodology: Empirical Study; Quantitative Study. Supplemental Data: Appendixes Internet. References Available: Y. Page Count: 15. Issue Publication Date: Oct, 2010. Publication History: First Posted Date: Sep 9, 2010; Accepted Date: Aug 13, 2010. Copyright Statement: All rights reserved. Elsevier B.V. 2010. AB - Quantification and description of individual differences in behavior, or personality differences, is now well-established in the working dog literature. What is less well-known is the predictive relationship between particular dog behavioral traits (if any) and important working outcomes. Here we evaluate the validity of a dog behavioral test instrument given to military working dogs (MWDs) from the 341st Training Squadron, USA Department of Defense (DoD); the test instrument has been used historically to select dogs to be trained for deployment. A 15-item instrument was applied on three separate occasions prior to training in patrol and detection tasks, after which dogs were given patrol-only, detection-only, or dual-certification status. On average, inter-rater reliability for all 15 items was high (mean = 0.77), but within this overall pattern, some behavioral items showed lower inter-rater reliability at some time points (<0.40). Test–retest reliability for most (but not all) single item behaviors was strong (>0.50) across shorter test intervals, but decreased with increasing test interval (<0.40). Principal components analysis revealed four underlying dimensions that summarized test behavior, termed here ‘object focus’, ‘sharpness’, ‘human focus’, and ‘search focus’. These four aggregate behavioral traits also had the same pattern of short-, but not long-term test–retest reliability as that observed for single item behaviors. Prediction of certification outcomes using an independent test data set revealed that certification outcomes could not be predicted by breed, sex, or early test behaviors. However, prediction was improved by models that included two aggregate behavioral trait scores and three single item behaviors measured at the final test period, with 1 unit increases in these scores resulting in 1.7–2.8 increased odds of successful dual- and patrol-only certification outcomes. No improvements to odor-detection certification outcomes were made by any model. While only modest model improvements in prediction error were made by using behavioral parameters (2–7%), model predictions were based on data from dogs that had successfully completed all three test periods only, and therefore did not include data from dogs that were rejected during testing or training due to behavioral or medical reasons. Thus, future improvements to predictive models may be more substantial using independent predictors with less restrictions in range. Reports of the reliability and validity estimates of behavioral instruments currently used to select MWDs are scarce, and we discuss these results in terms of improving the efficiency by which working dog programs may select dogs for patrol and odor-detection duties using behavioral pre-screening instruments. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - animal personality KW - animal performance KW - military working dogs KW - behavior KW - behavioral tests KW - reliability KW - predictive validity KW - 2010 KW - Behavioral Assessment KW - Dogs KW - Military Psychology KW - Performance KW - Personality KW - Animal Ethology KW - Statistical Validity KW - Test Reliability KW - Animal Personality KW - 2010 U1 - Sponsor: National Science Foundation. Grant: 0731216. Recipients: Gosling, Samuel D. DO - 10.1016/j.applanim.2010.08.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-20912-007&site=ehost-live&scope=site UR - ORCID: 0000-0001-8970-591X UR - UR - samg@mail.utexas.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-16067-007 AN - 2010-16067-007 AU - Perez, Lisa M. AU - Jones, Jeremy AU - Englert, David R. AU - Sachau, Daniel T1 - Secondary traumatic stress and burnout among law enforcement investigators exposed to disturbing media images. JF - Journal of Police and Criminal Psychology JO - Journal of Police and Criminal Psychology Y1 - 2010/10// VL - 25 IS - 2 SP - 113 EP - 124 CY - Germany PB - Springer SN - 0882-0783 SN - 1936-6469 AD - Perez, Lisa M., Psychology Department, Minnesota State University, Mankato, MN, US N1 - Accession Number: 2010-16067-007. Partial author list: First Author & Affiliation: Perez, Lisa M.; Psychology Department, Minnesota State University, Mankato, MN, US. Release Date: 20100913. Correction Date: 20160512. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Law Enforcement Personnel; Occupational Exposure; Occupational Stress; Psychological Stress. Minor Descriptor: Law Enforcement. Classification: Police & Legal Personnel (4290). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Secondary Traumatic Stress Scale DOI: 10.1037/t06768-000; Maslach Burnout Inventory. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: Oct, 2010. Publication History: First Posted Date: Mar 12, 2010. Copyright Statement: Springer Science + Business Media, LLC. 2010. AB - This study examines the psychological impact of viewing disturbing media on investigators engaged in computer forensics work. Twenty-eight federal law enforcement personnel who investigate Internet child pornography cases completed measures of secondary traumatic stress disorder (STSD) and burnout. Substantial percentages of investigators reported poor psychological well-being. Greater exposure to disturbing media was related to higher levels of STSD and cynicism. STSD and burnout scores were related to increased protectiveness of family, reliance on co-workers, general distrust, and turnover intentions. On a positive note, investigators scored high in professional efficacy, indicating they feel their work makes a difference. Furthermore, personnel with supportive relationships scored lower on both STSD and burnout. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - secondary traumatic stress KW - burnout KW - law enforcement investigators KW - exposure KW - disturbing media images KW - psychological impact KW - 2010 KW - Law Enforcement Personnel KW - Occupational Exposure KW - Occupational Stress KW - Psychological Stress KW - Law Enforcement KW - 2010 DO - 10.1007/s11896-010-9066-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-16067-007&site=ehost-live&scope=site UR - Lisa.perez@mnsu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-21868-003 AN - 2010-21868-003 AU - Isacco, Anthony AU - Garfield, Craig F. AU - Rogers, Timothy E. T1 - Correlates of coparental support among married and nonmarried fathers. T3 - Recent Research on Fathering JF - Psychology of Men & Masculinity JO - Psychology of Men & Masculinity JA - Psychol Men Masc Y1 - 2010/10// VL - 11 IS - 4 SP - 262 EP - 278 CY - US PB - Educational Publishing Foundation SN - 1524-9220 SN - 1939-151X AD - Isacco, Anthony, Counseling Psychology Program, Chatham University, Pittsburgh, PA, US, 15232 N1 - Accession Number: 2010-21868-003. Partial author list: First Author & Affiliation: Isacco, Anthony; Counseling Psychology Program, Chatham University, Pittsburgh, PA, US. Release Date: 20101025. Correction Date: 20151207. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Family Relations; Fathers; Marital Status; Parental Involvement; Social Support. Minor Descriptor: Parental Role; Coparenting. Classification: Childrearing & Child Care (2956). Population: Human (10); Male (30). Location: US. Age Group: Adolescence (13-17 yrs) (200); Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360); Aged (65 yrs & older) (380). Tests & Measures: Home Observation for Measurement of the Environment Scale; Multi-Dimensional Support Scale; Composite International Diagnostic Interview-Short Form. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 17. Issue Publication Date: Oct, 2010. Publication History: Accepted Date: Jun 15, 2010; Revised Date: Jun 14, 2010; First Submitted Date: Oct 6, 2009. Copyright Statement: American Psychological Association. 2010. AB - Coparenting has emerged as a central family process and relationship. However, a coparenting role may be unfamiliar and uncomfortable to many fathers. This study focused on fathers' perceptions of coparental support to better understand factors that may help fathers adjust to a new and challenging parental role. A conceptual model of coparental support was developed and tested on a sample of 2,062 fathers from the national Fragile Families and Child Well-being study to determine what father and mother characteristics were associated with fathers' perceptions of coparental support. Multigroup comparisons of the model were made between married and nonmarried fathers. Results found the model to be a good fit for both married and nonmarried fathers. Father involvement and relationship quality were significant positive correlates of perceptions of coparental support for married fathers, but not for nonmarried fathers. Father mental health showed a negative relationship with perceptions of coparental support for married and nonmarried fathers. Family dynamics and paternal roles, which affect fathers' perceptions of support from the coparent, can be different based on marital status. Interventions aimed at increasing coparental support need to address depression and anxiety among fathers. Limitations and future directions of research on coparenting are also discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - coparental support KW - coparenting KW - father involvement KW - fathers KW - family process KW - family relationship KW - coparenting roles KW - 2010 KW - Family Relations KW - Fathers KW - Marital Status KW - Parental Involvement KW - Social Support KW - Parental Role KW - Coparenting KW - 2010 DO - 10.1037/a0020686 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-21868-003&site=ehost-live&scope=site UR - aisacco@chatham.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-21688-005 AN - 2010-21688-005 AU - Carretta, Thomas R. T1 - Predictive validity of the Air Force Officer Qualifying Test for non-rated officer specialties. JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2010/10// VL - 22 IS - 4 SP - 450 EP - 464 CY - United Kingdom PB - Taylor & Francis SN - 0899-5605 SN - 1532-7876 AD - Carretta, Thomas R., AFMC 711th HPW/RHCI, 2210 8th Street, Area B, Bldg. 146, Room 122, OH, US, 45433-7511 N1 - Accession Number: 2010-21688-005. Partial author list: First Author & Affiliation: Carretta, Thomas R.; Air Force Research Laboratory, OH, US. Other Publishers: Educational Publishing Foundation; Lawrence Erlbaum. Release Date: 20101122. Correction Date: 20140811. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Commissioned Officers; Psychometrics; Test Reliability; Test Validity. Minor Descriptor: Military Training. Classification: Tests & Testing (2220); Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Air Force Officer Qualifying Test–Form S—Verbal Analogies Subtest; Air Force Officer Qualifying Test–Form S—Arithmetic Reasoning Subtest; Air Force Officer Qualifying Test–Form S—Word Knowledge Subtest; Air Force Officer Qualifying Test–Form S—Math Knowledge Subtest; Air Force Officer Qualifying Test–Form S—Instrument Comprehension Subtest; Air Force Officer Qualifying Test–Form S—Block Counting Subtest; Air Force Officer Qualifying Test–Form S—Table Reading Subtest; Air Force Officer Qualifying Test–Form S—Aviation Information Subtest; Air Force Officer Qualifying Test–Form S—Rotated Blocks Subtest; Air Force Officer Qualifying Test–Form S—General Science Subtest; Air Force Officer Qualifying Test–Form S—Hidden Figures Subtest; Self–Description Inventory. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 15. Issue Publication Date: Oct, 2010. AB - The Air Force Officer Qualifying Test (AFOQT) is used to qualify applicants for officer commissioning and aircrew training programs. The current study examined its predictive validity for 14 officer technical training courses for which there are no additional AFOQT minimum qualification requirements beyond those for officer commissioning. Sample sizes ranged from 16 to 2,190 with a mean and median size of 753 and 319 officers. Ninety percent (63 of 70) of the observed correlations between the AFOQT composites and average technical training grades were statistically significant. Meta-analyses were conducted to determine whether the AFOQT validities were generalizable across training specialties. Analyses were done on the observed data, after correction for range restriction, and after correction for both range restriction and criterion unreliability. The pattern of validities was similar for all three meta-analyses. The lower bound of the 95% confidence interval and the 95% credibility interval around the weighted mean validities were greater than zero for all five AFOQT composites supporting its utility for making personnel selection decisions for these jobs. The Verbal composite had the lowest and the Academic Aptitude composite had the highest weighted mean validity. The weighted mean of the validity coefficients across training specialties ranged from .261 to .326 for the observed data, .322 to .387 for the range-restriction corrected data, and .360 to .433 for the fully corrected data. Additional efforts are required to examine the generalizability of the results for a broader range of occupational specialties and to set minimum qualifying scores. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Air Force Officer Qualifying Test KW - officer specialties KW - test validity KW - test reliability KW - psychometrics KW - soldier training KW - officer commissioning KW - 2010 KW - Air Force Personnel KW - Commissioned Officers KW - Psychometrics KW - Test Reliability KW - Test Validity KW - Military Training KW - 2010 DO - 10.1080/08995605.2010.513261 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-21688-005&site=ehost-live&scope=site UR - Thomas.Carretta@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-20595-005 AN - 2010-20595-005 AU - Tollner-Burngasser, Alison AU - Riley, Michael A. AU - Nelson, W. Todd T1 - Individual and team susceptibility to change blindness. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2010/10// VL - 81 IS - 10 SP - 935 EP - 943 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Tollner-Burngasser, Alison, Procter & Gamble Company, 11511 Reed Hartman Highway, Cincinnati, OH, US, 45241 N1 - Accession Number: 2010-20595-005. PMID: 20922885 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Tollner-Burngasser, Alison; Procter & Gamble Company, Cincinnati, OH, US. Release Date: 20110214. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Human Factors Engineering; Individual Differences; Military Personnel; Simulation; Work Teams. Minor Descriptor: Environment. Classification: Engineering & Environmental Psychology (4000); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study; Scientific Simulation. References Available: Y. Page Count: 9. Issue Publication Date: Oct, 2010. Copyright Statement: Aerospace Medical Association, Alexandria, VA AB - Background: Individual operators in command and control environments are susceptible to change blindness. Change blindness by teams of operators, which is typical in military command and control, has not been extensively studied. This experiment investigated change blindness In Individuals and teams in a simulated military command and control situation display. Methods: Subjects completed a change-detection task individually or in three-person teams. In one team condition team members could actively communicate with each other, but in another condition they could not. The change-detection task involved monitoring flicker sequences of displays containing 6, 12, 24, or 48 ¡cons for changes in icon position. Results: Results revealed a team advantage that was more pronounced when teams communicated. Communicating teams had higher overall correct detection rates (mean = 95%) than both non-communicating triads (mean = 80%) and individuals (mean = 79%). Teams were susceptible to change blindness just as individuals were, but teamwork and communication were beneficial in reducing change blindness susceptibility. Communicating teams also experienced lower global workload (mean = 24.08) than non-communicating triads (mean = 38.44) and individuals (mean = 47.18). Discussion: This research highlights the importance of teamwork and communication in reducing change blindness and workload in a command and control environment. The findings can be used to facilitate development of methods and tools for reducing individual and team change blindness susceptibility. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - team susceptibility KW - change blindness KW - individual differences KW - environment KW - simulation KW - military command KW - human factors engineering KW - 2010 KW - Human Factors Engineering KW - Individual Differences KW - Military Personnel KW - Simulation KW - Work Teams KW - Environment KW - 2010 DO - 10.3357/ASEM.2809.2010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-20595-005&site=ehost-live&scope=site UR - burngasser.at@pg.com DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Tokish, John M. AU - McBratney, Colleen M. AU - Solomon, Daniel J. AU - LeClere, Lance AU - Dewing, Christopher B. AU - Provencher, Matthew T. T1 - Arthroscopic Repair of Circumferential Lesions of the Glenoid Labrum. JO - Journal of Bone & Joint Surgery, American Volume JF - Journal of Bone & Joint Surgery, American Volume Y1 - 2010/09/16/Sep2010 Supplement VL - 92 M3 - Article SP - 130 EP - 144 SN - 00219355 AB - BACKGROUND: Symptomatic pan-labral or circumferential (3600) tears of the glenohumeral labrum are an uncommon injury. The purpose of the present study was to report the results of surgical treatment of circumferential lesions of the glenoid labrum with use of validated outcome instruments. METHODS: From July 2003 to May 2006, forty-one shoulders in thirty-nine patients (thirty-four men and five women) with a mean age of 25.1 years were prospectively enrolled in a multicenter study and were managed for a circumferential (360°) lesion of the glenoid labrum. All patients had a primary diagnosis of pain and recurrent shoulder instability, and all underwent arthroscopic repair of the circumferential labral tear with a mean of 7.1 suture anchors. The outcomes for thirty-nine of the forty-one shoulders were assessed after a mean duration of follow-up of 31.8 months on the basis of the rating of pain and instability on a scale of 0 to 10, a physical examination, and three outcome instruments (the Single Assessment Numeric Evaluation score, the modified American Shoulder and Elbow Surgeons score, and the Short Form-12 score). RESULTS: Significant improvement was noted in terms of the mean pain score (from 4.3 to 1.1), the mean instability score (from 7.3 to 0.2), the mean modified American Shoulder and Elbow Surgeons score (from 55.5 to 89.6), the mean Short Form-12 score (from 75.7 to 90.0), and the mean Single Assessment Numeric Evaluation score (from 36.7 to 88.5). Six shoulders required revision surgery because of recurrent instability (two), recalcitrant biceps tendinitis (two), or postoperative tightness (two). All patients returned to their preinjury activity level. CONCLUSIONS: Pan-labral or circumferential lesions are an uncommon yet extensive injury of the glenohumeral joint that may result in recurrent instability and pain. The present study demonstrates that arthroscopic capsulolabral repair with suture anchor fixation can restore the stability of the glenohumeral joint and can provide a reliable improvement in subjective and objective outcome measures. LEVEL OF EVIDENCE: Therapeutic Level IV. See Instructions to Authors for a complete description of levels of evidence. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Bone & Joint Surgery, American Volume is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WOUNDS & injuries -- Treatment -- Research KW - GLENOHUMERAL joint KW - SURGERY KW - SUTURES KW - SHOULDER dislocations -- Treatment N1 - Accession Number: 53993781; Tokish, John M. 1; McBratney, Colleen M. 1; Solomon, Daniel J. 1; LeClere, Lance 1; Dewing, Christopher B. 1; Provencher, Matthew T. 1; Source Information: Sep2010 Supplement, Vol. 92, p130; Subject: WOUNDS & injuries -- Treatment -- Research; Subject: GLENOHUMERAL joint; Subject: SURGERY; Subject: SUTURES; Subject: SHOULDER dislocations -- Treatment; Number of Pages: 15p; Illustrations: 4 Color Photographs; Document Type: Article L3 - 10.2106/JBJSJ.00234 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=53993781&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Tandon, G.P. AU - Goecke, K. AU - Cable, K. AU - Baur, J. T1 - Environmental Durability of Fabric-Reinforced Shape-Memory Polymer Composites. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2010/09/15/ VL - 21 IS - 14 M3 - Article SP - 1365 EP - 1381 SN - 1045389X AB - This study is a baseline assessment of the environmental durability of current state-of-the-art, fabric-reinforced shape-memory (SM) materials being considered for morphing applications. Tensile dog-bone-shaped specimens are cut along three different directions, namely, along (0°), perpendicular (90°), and oblique (45°) to the planar orientation of the fabric. The elastomeric response and shape memory properties before and after simulated environmental exposure to moisture, lubrication oil, and UV radiation are measured. Weight loss of the as-received and conditioned specimens is monitored and the dog-bone-shaped specimens are subjected to recovery following fixation. Parameters being investigated include modulus in the glassy and rubbery state, stored strain, shape fixity, recovery stress, and unconstrained shape recovery. There is a twofold decrease in the composite stiffness as the material is cycled between room and elevated (above the glass transition) temperature. At room temperature, the 0-degree specimen has the maximum stiffness (5.8 GPa), failure strength (94 MPa), and failure strain (5.4%), while above the Tg, the 90-degree specimen has the least stiffness (∼18 MPa) and largest strain to failure (>200%). Thus, the composite exhibits large deformation in its rubbery state. Parameters which are strongly affected by the damage developed during the first SM cycle include rubbery and glassy (or unloading) moduli values measured during the second SM cycle, while smaller changes are observed in shape fixity and recovery properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SERVICE life (Engineering) KW - FIBROUS composites KW - POLYMERIC composites KW - SHAPE memory alloys KW - ELASTOMERS KW - LUBRICATION & lubricants KW - ULTRAVIOLET radiation KW - conditioning KW - fabric-reinforced KW - fixity KW - polymers KW - recovery KW - shape-memory N1 - Accession Number: 55713628; Tandon, G.P. 1; Goecke, K. 2; Cable, K. 3; Baur, J. 4; Affiliations: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXBC, Wright-Patterson AFB, OH 45433, USA, Multi-Scale Composites and Polymers Division, University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0060, USA, Gyaneshwar.Tandon@wpafb.af.mil; 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXBC, Wright-Patterson AFB, OH 45433, USA, Multi-Scale Composites and Polymers Division, University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0060, USA; 3: Cornerstone Research Group, Inc., Dayton, OH 45440, USA; 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXBC, Wright-Patterson AFB, OH 45433, USA; Issue Info: 09/15/2010, Vol. 21 Issue 14, p1365; Thesaurus Term: SERVICE life (Engineering); Subject Term: FIBROUS composites; Subject Term: POLYMERIC composites; Subject Term: SHAPE memory alloys; Subject Term: ELASTOMERS; Subject Term: LUBRICATION & lubricants; Subject Term: ULTRAVIOLET radiation; Author-Supplied Keyword: conditioning; Author-Supplied Keyword: fabric-reinforced; Author-Supplied Keyword: fixity; Author-Supplied Keyword: polymers; Author-Supplied Keyword: recovery; Author-Supplied Keyword: shape-memory; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325212 Synthetic Rubber Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 324191 Petroleum Lubricating Oil and Grease Manufacturing; Number of Pages: 17p; Document Type: Article; Full Text Word Count: 10480 L3 - 10.1177/1045389X10386265 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=55713628&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Pomeroy, Steven A. T1 - Highball! Missiles and Trains. JO - Air Power History JF - Air Power History Y1 - 2010///Fall2010 VL - 57 IS - 3 M3 - Article SP - 22 EP - 33 SN - 1044016X AB - The article discusses the mobile Minuteman intercontinental missile (ICBM) project, a U.S. military research effort to develop a traveling system of ICBMs within the U.S. to avoid potential hazards associated with stationary launch sites. Research to develop such technologies were begun in the 1950s during the administration of U.S. President Dwight D. Eisenhower and continued into the 1980s during the administration of U.S. President Ronald Reagan when the funding of such research ceased. Some subjects considered include the oversight of the project by the U.S. Air Force General Bernard Schriever, the development of similar ICBM technologies such as the the Atlas and Titan I ICBMs, and defense contractors RAND Corp. and Ramo-Wooldridge Corp. KW - INTERCONTINENTAL ballistic missiles -- Mobile basing KW - MINUTEMAN (Missile) KW - MILITARY research -- History KW - INTERCONTINENTAL ballistic missiles KW - GOVERNMENT research & development contracts -- United States KW - UNITED States -- Military policy KW - UNITED States KW - UNITED States. Air Force -- History KW - UNITED States. Air Force -- Weapons systems KW - SCHRIEVER, Bernard N1 - Accession Number: 54230236; Pomeroy, Steven A. 1; Affiliations: 1 : Director of Curriculum Integration, Department of Military and Strategic Studies, United States Air Force Academy; Source Info: Fall2010, Vol. 57 Issue 3, p22; Historical Period: ca 1955 to ca 1990; Subject Term: INTERCONTINENTAL ballistic missiles -- Mobile basing; Subject Term: MINUTEMAN (Missile); Subject Term: MILITARY research -- History; Subject Term: INTERCONTINENTAL ballistic missiles; Subject Term: GOVERNMENT research & development contracts -- United States; Subject Term: UNITED States -- Military policy; Subject: UNITED States; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ahl&AN=54230236&site=ehost-live&scope=site DP - EBSCOhost DB - ahl ER - TY - JOUR AU - Weller, Grant T. T1 - Remembering the Space Age: Proceedings of the 50th Anniversary Conference. JO - Air Power History JF - Air Power History J1 - Air Power History PY - 2010///Fall2010 Y1 - 2010///Fall2010 VL - 57 IS - 3 M3 - Book Review SP - 54 EP - 55 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "Remembering the Space Age: Proceedings of the 50th Anniversary Conference," edited by Steven J. Dick. KW - REMEMBERING the Space Age: Proceedings of the 50th Anniversary Conference (Book) KW - DICK, Steven J. KW - ASTRONAUTICS & civilization KW - NONFICTION N1 - Accession Number: 54230247; Source Information: Fall2010, Vol. 57 Issue 3, p54; Subject Term: REMEMBERING the Space Age: Proceedings of the 50th Anniversary Conference (Book); Subject Term: DICK, Steven J.; Subject Term: ASTRONAUTICS & civilization; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=54230247&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Atapour, M. AU - Pilchak, A. AU - Frankel, G.S. AU - Williams, J.C. T1 - Corrosion behaviour of investment cast and friction stir processed Ti–6Al–4V JO - Corrosion Science JF - Corrosion Science Y1 - 2010/09// VL - 52 IS - 9 M3 - Article SP - 3062 EP - 3069 SN - 0010938X AB - Abstract: The corrosion behaviour of investment cast and friction stir (FS) processed Ti–6Al–4V alloy was studied in HCl solution. FS processing was performed with the peak temperatures both above and below the β transus. All of the samples exhibited active–passive transitions in deaerated 5% HCl at room temperature, but the β FS processed samples exhibited superior corrosion behaviour. The corrosion morphology after immersion in 20% HCl was rationalized on the basis of a difference in partitioning of the alloying elements, which controls the composition of the α and β phases. [Copyright &y& Elsevier] AB - Copyright of Corrosion Science is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Corrosion & anti-corrosives KW - Solution (Chemistry) KW - Hydrochloric acid KW - Titanium-aluminum-vanadium alloys KW - Founding KW - Friction stir welding KW - Temperature effect KW - Scanning electron microscopy KW - A. Titanium KW - B. Polarization KW - B. SEM KW - C. Segregation N1 - Accession Number: 51921973; Atapour, M. 1,2; Pilchak, A. 1,3,4; Frankel, G.S. 1; Email Address: frankel.10@osu.edu; Williams, J.C. 1; Affiliations: 1: Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA; 2: Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran; 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, OH 45433, USA; 4: Universal Technology Corporation, Dayton, OH 45432, USA; Issue Info: Sep2010, Vol. 52 Issue 9, p3062; Thesaurus Term: Corrosion & anti-corrosives; Thesaurus Term: Solution (Chemistry); Thesaurus Term: Hydrochloric acid; Subject Term: Titanium-aluminum-vanadium alloys; Subject Term: Founding; Subject Term: Friction stir welding; Subject Term: Temperature effect; Subject Term: Scanning electron microscopy; Author-Supplied Keyword: A. Titanium; Author-Supplied Keyword: B. Polarization; Author-Supplied Keyword: B. SEM; Author-Supplied Keyword: C. Segregation; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.corsci.2010.05.026 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=51921973&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Ye, Nong AU - Yau, Steve AU - Huang, Dazhi AU - Baydogan, Mustafa AU - Aranda, Billibaldo M. AU - Roontiva, Auttawut AU - Hurley, Patrick T1 - Models of dynamic relations among service activities, system state and service quality on computer and network systems. JO - Information Knowledge Systems Management JF - Information Knowledge Systems Management Y1 - 2010/09// VL - 9 IS - 2 M3 - Article SP - 99 EP - 116 PB - IOS Press SN - 13891995 AB - Service quality on computer and network systems has become increasingly important as many conventional service transactions are moved online. Service quality of computer and network services can be measured by the performance of the service process in throughput, delay, and so on. On a computer and network system, competing service requests of users and associated service activities change the state of limited system resources which in turn affects the achieved service quality. Modeling dynamic relations of service activities, system state and service quality is required to determine if users' service requests and requirements of service quality can be satisfied by the system with limited resources and how the system and service configuration can be adapted to meet service quality requirements. This paper presents our empirical study to establish activity-state-quality models for a voice communication service. We run experiments to collect system dynamics data under various service conditions and use statistical techniques to analyze experimental data and build activity-state-quality models. The results reveal four major types of dynamic relations among service activity parameters, system resource state, and the network throughput - a measure of achieved service quality for the voice communication service. Although delay-related measures are also important for voice data communication, they are not collected in this study. Five system state variables concerning the memory, CPU, process and IP resources are uncovered to be affected by service activity parameters significantly and be associated with the achieved service quality closely. We also obtain an insight about increasing the size of the buffer which holds voice data before transmission over the network to alleviate the workload on system resources and maintain the network throughout when the number of client requests and the client requirement in voice quality increase. [ABSTRACT FROM AUTHOR] AB - Copyright of Information Knowledge Systems Management is the property of IOS Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUALITY of service KW - SYSTEMS theory KW - SYSTEM analysis KW - STATISTICS KW - SYSTEMS engineering KW - INDUSTRIAL engineering KW - DYNAMICS KW - achieved service quality KW - Computer and network service KW - service and system configuration KW - statistical analysis and modeling KW - voice communication service N1 - Accession Number: 59408465; Ye, Nong 1; Yau, Steve 1; Huang, Dazhi 1; Baydogan, Mustafa 1; Aranda, Billibaldo M. 1; Roontiva, Auttawut 1; Hurley, Patrick 2; Affiliations: 1: School of Computing, Informatics, Decision Systems Engineering, Arizona State University, Tempe, AZ 85287-8809, USA; 2: U.S. Air Force Research Laboratory/RIGA, Rome, NY 13441-4505, USA; Issue Info: 2010, Vol. 9 Issue 2, p99; Thesaurus Term: QUALITY of service; Thesaurus Term: SYSTEMS theory; Thesaurus Term: SYSTEM analysis; Thesaurus Term: STATISTICS; Thesaurus Term: SYSTEMS engineering; Thesaurus Term: INDUSTRIAL engineering; Subject Term: DYNAMICS; Author-Supplied Keyword: achieved service quality; Author-Supplied Keyword: Computer and network service; Author-Supplied Keyword: service and system configuration; Author-Supplied Keyword: statistical analysis and modeling; Author-Supplied Keyword: voice communication service; Number of Pages: 18p; Illustrations: 3 Diagrams, 5 Charts, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=59408465&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Bond, Vanessa L. AU - Canfield, Robert A. AU - Santos Matos, Maria da Luz Madruga AU - Suleman, Afzal AU - Blair, Maxwell T1 - Joined-Wing Wind-Tunnel Test for Longitudinal Control via Aftwing Twist. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2010/09//Sep/Oct2010 Y1 - 2010/09//Sep/Oct2010 VL - 47 IS - 5 M3 - Article SP - 1481 EP - 1489 SN - 00218669 AB - Wind-tunnel tests were conducted to assess the use of aftwing twist for longitudinal control in a joined-wing aircraft. Forces and moments required for pitch control were measured experimentally, along with limited chordwise pressure measurements. Comparisons of aerodynamic panel model predictions with experimental data were used to calculate camber and center-of-pressure corrections. The lift-curve slope measured at four flow speeds compared favorably to linear predictions over the range of 20° angles of attack. The pitching moment coefficient was linear at the three lower flow speeds for untwisted and twist-down aft wings over a narrower range of about 10° angles of attack. The pressure exhibited shifts in the chordwise distribution at angles of attack coinciding with the change in the moment curve slope. The large spread in the twist-up aftwing configuration drag and pitching-moment coefficients indicated flow separation on the aft wing, even at small angles of attack, deterring the twist effectiveness. Independent forward and aftwing measurements and more extensive use of pressure sensors are recommended in future experiments to confirm the apparent separation and interference effects that must be avoided if aftwing twist is to be used for pitch control on a joined wing. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERFERENCE (Aerodynamics) KW - AERODYNAMICS KW - AIRPLANE wings KW - AIRFRAMES KW - AIRPLANES -- Pressurization N1 - Accession Number: 55793237; Source Information: Sep/Oct2010, Vol. 47 Issue 5, p1481; Subject Term: INTERFERENCE (Aerodynamics); Subject Term: AERODYNAMICS; Subject Term: AIRPLANE wings; Subject Term: AIRFRAMES; Subject Term: AIRPLANES -- Pressurization; Subject Term: ; Number of Pages: 9p; ; Illustrations: 4 Black and White Photographs, 5 Diagrams, 4 Charts, 12 Graphs; ; Document Type: Article; L3 - 10.2514/1.41140 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=55793237&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ghommem, M. AU - Hajj, M. R. AU - Pettit, C. L. AU - Beran, P. S. T1 - Stochastic Modeling of Incident Gust Effects on Aerodynamic Lift. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2010/09//Sep/Oct2010 Y1 - 2010/09//Sep/Oct2010 VL - 47 IS - 5 M3 - Article SP - 1720 EP - 1727 SN - 00218669 AB - The intrusive formulation of polynomial chaos expansion is implemented to determine uncertainty in aerodynamic loads on a rigid airfoil due to imprecise parameters that characterize an incoming gust. The results yield the sensitivity of the lift coefficient to variations in intensities and integral length scales of the gust fluctuations. The results show that lift coefficient fluctuations about the mean of each time step are affected primarily by the intensity of the fluctuations of the vertical velocity component, which should be expected. Next in order of importance is the integral length scale of the vertical velocity component. This implementation of the intrusive polynomial chaos expansion provides guidance for future efforts to quantify uncertain gust loads on micro air vehicles with higher fidelity models. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GUST loads KW - AERODYNAMIC load KW - STOCHASTIC models KW - CHAOS theory KW - ATMOSPHERIC turbulence N1 - Accession Number: 55793258; Source Information: Sep/Oct2010, Vol. 47 Issue 5, p1720; Subject Term: GUST loads; Subject Term: AERODYNAMIC load; Subject Term: STOCHASTIC models; Subject Term: CHAOS theory; Subject Term: ATMOSPHERIC turbulence; Subject Term: ; Number of Pages: 8p; ; Illustrations: 1 Diagram, 3 Charts, 4 Graphs; ; Document Type: Article; L3 - 10.2514/1.C000257 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=55793258&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Poggie, Jonathan AU - Tilmann, Carl P. AU - Flick, Peter M. AU - Silkey, Joseph S. AU - Osborne, Bradley A. AU - Ervin, Gregory AU - Maric, Dragan AU - Mangalam, Siva AU - Mangalam, Arun T1 - Closed-Loop Stall Control System. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2010/09//Sep/Oct2010 Y1 - 2010/09//Sep/Oct2010 VL - 47 IS - 5 M3 - Article SP - 1747 EP - 1755 SN - 00218669 AB - A closed-loop, stall sense and control system was demonstrated on a morphing airfoil. The FlexSys, Inc. Mission Adaptive Compliant Wing was modified to accept a Boeing Co. dielectric barrier discharge actuator panel in a location immediately upstream of the trailing-edge morphing flap, and hot-film sensors were installed on the model surface. A signal analysis algorithm, developed by Tao Systems, Inc., was applied to the hot-film signals to detect separation and trigger activation of the dielectric barrier discharge actuators. The system was successfully demonstrated in the U.S. Air Force Research Laboratory Phillip P. Antonatos Subsonic Aerodynamics Research Laboratory wind-tunnel facility, and an improvement in lift of about 10% was observed at Mach 0.05 (chord Reynolds number 9 x 105) under closed-loop control and a turbulent boundary-layer state. Actuator effectiveness was demonstrated up to Mach 0.1, but must be extended to Mach 0.2-0.3 to enable a practical stall control system for takeoff and approach of large aircraft. It may be possible to obtain that level of performance by optimizing the actuator locations and input waveforms. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROFOILS KW - AIRPLANE control systems KW - ACTUATORS KW - AIRPLANES -- Performance KW - AERODYNAMIC load N1 - Accession Number: 55793261; Source Information: Sep/Oct2010, Vol. 47 Issue 5, p1747; Subject Term: AEROFOILS; Subject Term: AIRPLANE control systems; Subject Term: ACTUATORS; Subject Term: AIRPLANES -- Performance; Subject Term: AERODYNAMIC load; Subject Term: ; Number of Pages: 9p; ; Illustrations: 2 Color Photographs, 2 Diagrams, 1 Chart, 6 Graphs; ; Document Type: Article; L3 - 10.2514/1.C000262 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=55793261&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 105006875 T1 - Appreciating home much more. AU - Tran P Y1 - 2010/09//Sep/Oct2010 N1 - Accession Number: 105006875. Language: English. Entry Date: 20101126. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Nursing; USA. Special Interest: Military/Uniformed Services. KW - Afghanistan KW - Military Nursing -- Psychosocial Factors KW - United States SP - 3 EP - 3 JO - Med-Surg Matters JF - Med-Surg Matters JA - MEDSURG MATTERS VL - 19 IS - 5 CY - Pitman, New Jersey PB - Jannetti Publications, Inc. AD - Pediatric Clinic, United States Air Force, Royal Air Force, Lakenheath, UK UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105006875&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Fleigel, Jeffrey D. AU - Tunder, George S. AU - Villalobos, Joe J. T1 - A Maxillary Obturator Prosthesis for an Active Duty Air Force Flyer: A Case Report. JO - Military Medicine JF - Military Medicine J1 - Military Medicine PY - 2010/09// Y1 - 2010/09// VL - 175 IS - 9 M3 - Article SP - 697 EP - 700 PB - AMSUS SN - 00264075 AB - Objectives: To fabricate a maxillary obturator prosthesis for an active duty pilot allowing him to return to active flying status. Methods: A 24-year-old male active duty U.S. Air Force pilot presented with a history of right posterior maxillectomy due to a keratocyst odontogenic tumor. The patient had been wearing an interim obturator prosthesis for 4 months and was removed from active duty flight status. A comprehensive oral evaluation was completed and a definitive obturator prosthesis was fabricated using a cast metal framework. Extraoral 3D stereophotogrammetry and a facial moulage were accomplished. The patient underwent evaluation for return to active flying status. Results: The patient returned to active duty flight status after passing all of the required tests. Conclusion: Obturator prostheses may be a suitable treatment option allowing a patient to conduct all of the required functions of an active flyer. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROSTHESIS KW - AIR pilots -- Health KW - UNITED States. Air Force -- Officials & employees KW - PHOTOGRAMMETRY KW - THERAPEUTICS N1 - Accession Number: 53850711; Source Information: Sep2010, Vol. 175 Issue 9, p697; Subject Term: PROSTHESIS; Subject Term: AIR pilots -- Health; Subject Term: UNITED States. Air Force -- Officials & employees; Subject Term: PHOTOGRAMMETRY; Subject Term: THERAPEUTICS; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=53850711&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Van Zwoll, Lisa R.. T1 - Poétique des lieux: Enquête sur les mémoires féminins de l'aristocratie française (1789-1848). JO - Nineteenth Century French Studies JF - Nineteenth Century French Studies Y1 - 2010/09// VL - 39 IS - 1/2 M3 - Book Review SP - 177 EP - 178 SN - 01467891 AB - A review of the book "Poétique des lieux: Enquête sur les mémoires féminins de l'aristocratie française 1789-1848," by Claudine Giacchetti is presented. KW - Autobiography -- Women authors KW - Nonfiction KW - Giacchetti, Claudine KW - Poetique des lieux: Enquete sur les memoires feminins de l'aristocratie francaise 1789-1848 (Book) N1 - Accession Number: 55578904; Van Zwoll, Lisa R.. 1; Affiliations: 1 : United States Air Force Academy.; Source Info: Sep2010, Vol. 39 Issue 1/2, p177; Subject Term: Autobiography -- Women authors; Subject Term: Nonfiction; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=vth&AN=55578904&site=ehost-live&scope=site DP - EBSCOhost DB - vth ER - TY - JOUR AU - Balasubramanyam, A. AU - Sailaja, N. AU - Mahboob, M. AU - Rahman, M.F. AU - Hussain, Saber M. AU - Grover, Paramjit T1 - In vitro mutagenicity assessment of aluminium oxide nanomaterials using the Salmonella/microsome assay JO - Toxicology in Vitro JF - Toxicology in Vitro Y1 - 2010/09// VL - 24 IS - 6 M3 - Article SP - 1871 EP - 1876 SN - 08872333 AB - Abstract: The aim of the current study was to evaluate the potential mutagenicity of aluminium oxide nanomaterials (NMs) (Al2O3-30nm and Al2O3-40nm). Characterization of the NMs was done before the initiation of the study. The mutagenicity of the NMs was studied by the Ames test with Salmonella typhimurium TA100, TA1535, TA98, TA97a and TA102 strains, in the presence and absence of the S9 mixture. Based on a preliminary cytotoxicity study conducted on the strains, different concentrations of Al2O3-30nm, Al2O3-40nm and Al2O3-bulk were selected. At all the concentrations tested, Al2O3-30nm and Al2O3-40nm did not significantly increase the number of revertant colonies compared to the Al2O3-bulk and control with or without S9 mixture. Our findings suggest that Al2O3 NMs were devoid of any size and concentration dependent mutagenicity compared to the Al2O3-bulk and control. [ABSTRACT FROM AUTHOR] AB - Copyright of Toxicology in Vitro is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Salmonella KW - Mutagenicity testing KW - Toxicology KW - Aluminum oxide KW - Nanostructured materials KW - Transmission electron microscopy KW - Salmonella typhimurium KW - Light -- Scattering KW - Toxicity testing -- In vitro KW - Aluminium oxide KW - aluminium oxide ( Al2O3 ) KW - Ames test KW - dynamic light scattering ( DLS ) KW - laser Doppler velocimetry ( LDV ) KW - Mutagenicity KW - Nanomaterials KW - transmission electron microscopy ( TEM ) N1 - Accession Number: 53334362; Balasubramanyam, A. 1; Sailaja, N. 1; Mahboob, M. 1; Rahman, M.F. 1; Hussain, Saber M. 2; Grover, Paramjit 1; Email Address: grover@iict.res.in; Affiliations: 1: Toxicology Unit, Biology Division, Indian Institute of Chemical Technology, Hyderabad 500 607, Andhra Pradesh, India; 2: Applied Biotechnology, Air Force Research Laboratory/HEPB, Wright-Patterson, AFB, OH 45431, USA; Issue Info: Sep2010, Vol. 24 Issue 6, p1871; Thesaurus Term: Salmonella; Thesaurus Term: Mutagenicity testing; Thesaurus Term: Toxicology; Subject Term: Aluminum oxide; Subject Term: Nanostructured materials; Subject Term: Transmission electron microscopy; Subject Term: Salmonella typhimurium; Subject Term: Light -- Scattering; Subject Term: Toxicity testing -- In vitro; Author-Supplied Keyword: Aluminium oxide; Author-Supplied Keyword: aluminium oxide ( Al2O3 ); Author-Supplied Keyword: Ames test; Author-Supplied Keyword: dynamic light scattering ( DLS ); Author-Supplied Keyword: laser Doppler velocimetry ( LDV ); Author-Supplied Keyword: Mutagenicity; Author-Supplied Keyword: Nanomaterials; Author-Supplied Keyword: transmission electron microscopy ( TEM ); NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 325413 In-Vitro Diagnostic Substance Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.tiv.2010.07.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=53334362&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hsu, Paul S. AU - Roy, Sukesh AU - Gord, James R. AU - Patnaik, Anil K. T1 - Magneto-optical control of the group velocity of light in an inhomogeneously broadened medium. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2010/08/10/ VL - 57 IS - 14/15 M3 - Article SP - 1388 EP - 1396 SN - 09500340 AB - We investigate the use of a magnetic field, in conjunction with an elliptically polarized laser field, to control the group velocity of light in an inhomogeneously broadened medium. We show both theoretically and experimentally that the dispersion and hence, the speed of light in an atomic system, having V-configuration with Zeeman sublevels as their excited states, can be effectively controlled magneto-optically. We present approximate analytical solutions for a homogeneously broadened medium and numerical solutions for both a homogeneously and an inhomogeneously broadened medium. We show that while one can tune the speed of light from subluminal to superluminal with the magnetic field in a static or cooled medium with V-type atoms, in hot atoms one can achieve an efficient magneto-optical tunability in the subluminal regime. We experimentally demonstrate such control of light speed using a single elliptically polarized light and a moderately strong magnetic field in a 87Rb vapor cell. We propose to use the optical field for coarse control and the magnetic field for finer control of the light speed in an atomic medium. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC fields KW - SPEED of light KW - PHYSICAL & theoretical chemistry KW - OPTICAL polarization KW - OPTICS KW - atomic coherence KW - electromagnetically induced transparency KW - magneto-optical effects KW - nonlinear optics KW - slow light N1 - Accession Number: 53466565; Hsu, Paul S. 1,2; Roy, Sukesh 3; Gord, James R. 1; Patnaik, Anil K. 1,2; Email Address: anil.patnaik@wpafb.af.mil; Affiliations: 1: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433, USA.; 2: Department of Physics, Wright State University, Dayton, OH 45435, USA.; 3: Spectral Energies, LLC, Dayton, OH 45431, USA.; Issue Info: Aug-Sep2010, Vol. 57 Issue 14/15, p1388; Subject Term: MAGNETIC fields; Subject Term: SPEED of light; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: OPTICAL polarization; Subject Term: OPTICS; Author-Supplied Keyword: atomic coherence; Author-Supplied Keyword: electromagnetically induced transparency; Author-Supplied Keyword: magneto-optical effects; Author-Supplied Keyword: nonlinear optics; Author-Supplied Keyword: slow light; Number of Pages: 9p; Illustrations: 2 Diagrams, 6 Graphs; Document Type: Article L3 - 10.1080/09500341003692997 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=53466565&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Martin, John A. AU - Combs, James G. T1 - Sarbanes-Oxley: Does the Cost Knock Your Socks Off? JO - Academy of Management Perspectives JF - Academy of Management Perspectives Y1 - 2010/08// VL - 24 IS - 3 M3 - Article SP - 103 EP - 105 PB - Academy of Management SN - 15589080 AB - The article reports on a study which investigated the indirect costs of the U.S. Sarbanes-Oxley Act (SOX), which was designed to increase corporate accounting transparency. The study, "How costly is the Sarbanes-Oxley Act? Evidence on the effects of the act on corporate profitability," by Anwer Ahmed, Mary Lea McAnally, Stephanie Rasmussen, and Connie Weaver, was published in the "Journal of Corporate Finance." It found that implementation of SOX increased cash flow at firms where it caused accounting irregularities to be uncovered, while lowering cash flow in general. KW - FINANCIAL disclosure KW - CORPORATIONS -- Accounting KW - ORGANIZATIONAL accountability KW - GOVERNMENT regulation KW - ACCOUNTING -- Law & legislation KW - DISCLOSURE in accounting KW - TRANSPARENCY in organizations KW - ACCOUNTING fraud KW - CASH flow KW - LAW & legislation KW - CORRUPT practices KW - UNITED States KW - UNITED States. Sarbanes-Oxley Act of 2002 N1 - Accession Number: 52842957; Martin, John A. 1; Combs, James G. 2; Affiliations: 1: Associate Professor of Management, United States Air Force Academy.; 2: Jim Moran Professor of Management, Jim Moran Institute for Global Entrepreneurship, Florida State University.; Issue Info: Aug2010, Vol. 24 Issue 3, p103; Thesaurus Term: FINANCIAL disclosure; Thesaurus Term: CORPORATIONS -- Accounting; Thesaurus Term: ORGANIZATIONAL accountability; Thesaurus Term: GOVERNMENT regulation; Thesaurus Term: ACCOUNTING -- Law & legislation; Thesaurus Term: DISCLOSURE in accounting; Thesaurus Term: TRANSPARENCY in organizations; Thesaurus Term: ACCOUNTING fraud; Thesaurus Term: CASH flow; Subject Term: LAW & legislation; Subject Term: CORRUPT practices; Subject: UNITED States; Reviews & Products: UNITED States. Sarbanes-Oxley Act of 2002; Number of Pages: 3p; Document Type: Article L3 - 10.5465/AMP.2010.52842957 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=52842957&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Martin, John A. AU - Davis, Kevin J. T1 - Late in the Game: How Does a Short Time Horizon Impact CEO Decision Making? JO - Academy of Management Perspectives JF - Academy of Management Perspectives Y1 - 2010/08// VL - 24 IS - 3 M3 - Article SP - 105 EP - 106 PB - Academy of Management SN - 15589080 AB - The article reports on a study which investigated the decision making time frames of chief executive officers (CEOs). The study, "CEO decision horizon and firm performance: An empirical investigation," by Murah Antia, Christos Pantzalis, and Jung Chul Park, was published in the "Journal of Corporate Finance." It found that CEOs with longer decision-making horizons were associated with increased stock valuations, while those with short-term horizons tended to maximize short-term gains, which often resulted in subsequent financial statement corrections. KW - CHIEF executive officers KW - DECISION making KW - SHORT term planning KW - STRATEGIC planning KW - FINANCIAL statements KW - BUSINESS planning KW - INCENTIVES in industry KW - EXECUTIVES -- Psychology KW - RESTATEMENT of corporate earnings KW - CORPORATIONS -- Valuation KW - CORPORATIONS -- Growth KW - STOCKS (Finance) -- Prices N1 - Accession Number: 52842958; Martin, John A. 1; Davis, Kevin J. 1; Affiliations: 1: Associate Professor of Management, United States Air Force Academy.; Issue Info: Aug2010, Vol. 24 Issue 3, p105; Thesaurus Term: CHIEF executive officers; Thesaurus Term: DECISION making; Thesaurus Term: SHORT term planning; Thesaurus Term: STRATEGIC planning; Thesaurus Term: FINANCIAL statements; Thesaurus Term: BUSINESS planning; Thesaurus Term: INCENTIVES in industry; Thesaurus Term: EXECUTIVES -- Psychology; Thesaurus Term: RESTATEMENT of corporate earnings; Thesaurus Term: CORPORATIONS -- Valuation; Thesaurus Term: CORPORATIONS -- Growth; Thesaurus Term: STOCKS (Finance) -- Prices; Number of Pages: 2p; Document Type: Article L3 - 10.5465/AMP.2010.52842958 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=52842958&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Boxx, I. AU - Stöhr, M. AU - Carter, C. AU - Meier, W. T1 - Temporally resolved planar measurements of transient phenomena in a partially pre-mixed swirl flame in a gas turbine model combustor JO - Combustion & Flame JF - Combustion & Flame Y1 - 2010/08// VL - 157 IS - 8 M3 - Article SP - 1510 EP - 1525 SN - 00102180 AB - Abstract: This paper presents observations and analysis of the time-dependent behavior of a 10kW partially pre-mixed, swirl-stabilized methane–air flame exhibiting self-excited thermo-acoustic oscillations. This analysis is based on a series of measurements wherein particle image velocimetry (PIV) and planar laser-induced fluorescence (PLIF) of the OH radical were performed simultaneously at 5kHz repetition rate over durations of 0.8s. Chemiluminescence imaging of the OH* radical was performed separately, also at 5kHz over 0.8s acquisition runs. These measurements were of sufficient sampling frequency and duration to extract usable spatial and temporal frequency information on the medium to large-scale flow-field and heat-release characteristics of the flame. This analysis is used to more fully characterize the interaction between the self-excited thermo-acoustic oscillations and the dominant flow-field structure of this flame, a precessing vortex core (PVC) present in the inner recirculation zone. Interpretation of individual measurement sequences yielded insight into various physical phenomena and the underlying mechanisms driving flame dynamics. It is observed for this flame that location of the reaction zone tracks large-scale fluctuations in axial velocity and also conforms to the passage of large-scale vortical structures through the flow-field. Local extinction of the reaction zone in regions of persistently high principal compressive strain is observed. Such extinctions, however, are seen to be self healing and thus do not induce blowout. Indications of auto-ignition in regions of unburned gas near the exit are also observed. Probable auto-ignition events are frequently observed coincident with the centers of large-scale vortical structures, suggesting the phenomenon is linked to the enhanced mixing and longer residence times associated with fluid at the core of the PVC as it moves through the flame. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMBUSTION chambers KW - Vortex motion KW - Strains & stresses (Mechanics) KW - Transients (Dynamics) KW - Flame KW - Gas turbines KW - Oscillations KW - Particle image velocimetry KW - Chemiluminescence KW - Fluctuations (Physics) KW - Auto-ignition KW - Combustion diagnostics KW - Gas turbine model combustor KW - kHz OH-PLIF KW - kHz PIV KW - Local extinction KW - Precessing vortex core KW - Swirl flame KW - Turbulent flame N1 - Accession Number: 51811895; Boxx, I. 1; Email Address: Isaac.Boxx@dlr.de; Stöhr, M. 1; Carter, C. 2; Meier, W. 1; Affiliations: 1: Institut für Verbrennungstechnik, Deutsches Zentrum für Luft-und Raumfahrt (DLR), Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany; 2: Air Force Research Laboratory (AFRL)/PRAS, 1950 Fifth St, Wright-Patterson AFB, OH, USA; Issue Info: Aug2010, Vol. 157 Issue 8, p1510; Thesaurus Term: COMBUSTION chambers; Thesaurus Term: Vortex motion; Thesaurus Term: Strains & stresses (Mechanics); Subject Term: Transients (Dynamics); Subject Term: Flame; Subject Term: Gas turbines; Subject Term: Oscillations; Subject Term: Particle image velocimetry; Subject Term: Chemiluminescence; Subject Term: Fluctuations (Physics); Author-Supplied Keyword: Auto-ignition; Author-Supplied Keyword: Combustion diagnostics; Author-Supplied Keyword: Gas turbine model combustor; Author-Supplied Keyword: kHz OH-PLIF; Author-Supplied Keyword: kHz PIV; Author-Supplied Keyword: Local extinction; Author-Supplied Keyword: Precessing vortex core; Author-Supplied Keyword: Swirl flame; Author-Supplied Keyword: Turbulent flame; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.combustflame.2009.12.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=51811895&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Kung-Hau Ding AU - Xiaolan Xu AU - Leung Tsang T1 - Electromagnetic Scattering by Bicontinuous Random Microstructures With Discrete Permittivities. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2010/08// VL - 48 IS - 8 M3 - Article SP - 3139 EP - 3151 SN - 01962892 AB - For electromagnetic (EM) scattering by dense media, the traditional approach is to use particles of spheres or ellipsoids that are densely and randomly packed in a background medium. The particles have discrete permittivities that are different from the background medium. The dense-medium model has been applied to themicrowave remote sensing of terrestrial snow. In this paper, we propose a different approach of using a bicontinuous medium with discrete permittivities and study the EM scattering properties using analytical and numerical methods. The bicontinuous medium is a continuous representation of interfaces between inhomogeneities within the medium. Discrete permittivities are then assigned to the inhomogeneities of the structure. The analytical approach is based on the Born approximation using the derived analytical correlation functions. The numerical method is based on the numerical Maxwell model of 3-D (NMM3D) approach. In particular, the discrete-dipole approximation and the conjugate gradient-squared method accelerated by the fast Fourier transform technique are used in solving the volume integral equation. Scattering results of analytical and numerical approaches are compared. Numerical results are illustrated using parameters in microwave remote sensing of terrestrial snow. In the NMM3D simulations, three kinds of convergence tests are conducted, viz., convergence with respect to the discretization size, convergence with respect to the sample size, and convergence with respect to the number of realization. The NMM3D results indicate that the scattering by the bicontinuous medium with a broader size distribution has a weaker frequency dependence than that by the medium with a more narrow size distribution. The frequencydependence power law index can be lower than two, which is very much lower than the power of four in Rayleigh scattering. The NMM3D results also exhibit fairly large cross-polarization returns which account for the local nonisotropic microstructures of bicontinuous media, although the medium is statistically isotropic. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETISM KW - MICROSTRUCTURE KW - PERMITTIVITY KW - RAYLEIGH scattering KW - DIPOLE moments KW - SCATTERING (Physics) KW - Bicontinuous media KW - dense media KW - discrete dipole approximation KW - discrete ransom media KW - frequency dependence KW - NMM3D KW - volume scattering N1 - Accession Number: 52621203; Kung-Hau Ding 1,2; Email Address: kung-hau.ding@hanscom.af.mil; Xiaolan Xu 3; Email Address: xlxu@ee.washington.edu; Leung Tsang 3,4; Email Address: tsang@ee.washington.edu; Affiliations: 1: Senior Member, IEEE; 2: Sensors Directorate, Air Force Research Laboratory, Hanscom Air Force Base, MA 01731 USA; 3: Department of Electrical Engineering, University of Washington, Seattle, WA 98195 USA; 4: Fellow, IEEE; Issue Info: Aug2010, Vol. 48 Issue 8, p3139; Subject Term: ELECTROMAGNETISM; Subject Term: MICROSTRUCTURE; Subject Term: PERMITTIVITY; Subject Term: RAYLEIGH scattering; Subject Term: DIPOLE moments; Subject Term: SCATTERING (Physics); Author-Supplied Keyword: Bicontinuous media; Author-Supplied Keyword: dense media; Author-Supplied Keyword: discrete dipole approximation; Author-Supplied Keyword: discrete ransom media; Author-Supplied Keyword: frequency dependence; Author-Supplied Keyword: NMM3D; Author-Supplied Keyword: volume scattering; Number of Pages: 13p; Document Type: Article L3 - 10.1109/TGRS.2010.2043953 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=52621203&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Turchi, Peter J. AU - Roderick, Norman F. AU - Degnan, James H. AU - Frese, Michael H. AU - Amdahl, David J. T1 - Review of Some Plasma Gun Techniques for Fusion at Megagauss Energy Densities. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2010/08//Aug2010 Part 1 Y1 - 2010/08//Aug2010 Part 1 VL - 38 IS - 8 M3 - Article SP - 1864 EP - 1873 SN - 00933813 AB - Plasma guns offer opportunities to generate and direct plasma flows at high energy density. Typically, such guns comprise coaxial electrodes that are connected to high-current sources (e.g., capacitor banks, pulse lines, inductive stores, or magnetic-flux-compression generators). The basic interactions include ionization of materials such as injected gas or preinstalled wires/foils, acceleration of these materials by the Lorentz force, and expulsion of the resulting plasma flows. We review the use of a particular arrangement in the form of a plasma flow switch that acts as a multimegampere commutator, but it can also provide a magnetized-plasma target for compression by an imploding liner. In a quite separate concept, a plurality of quasi-steady plasma guns in a spherical array provides converging, collimated jets to compress plasma with stand-off from the plasma generators and chamber walls. Such stand-off in a repetitively pulsed system can be crucial for the development of fusion power reactors at megagauss energy densities. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA devices KW - PLASMA (Ionized gases) KW - LORENTZ force KW - CAPACITOR banks KW - ELECTROMAGNETIC fields KW - NUCLEAR fusion N1 - Accession Number: 52928720; Source Information: Aug2010 Part 1, Vol. 38 Issue 8, p1864; Subject Term: PLASMA devices; Subject Term: PLASMA (Ionized gases); Subject Term: LORENTZ force; Subject Term: CAPACITOR banks; Subject Term: ELECTROMAGNETIC fields; Subject Term: NUCLEAR fusion; Subject Term: ; Number of Pages: 10p; ; Document Type: Article; L3 - 10.1109/TPS.2010.2051043 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=52928720&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kharoufeh, Jeffrey P. AU - Solo, Christopher J. AU - Ulukus, M. Yasin T1 - Semi-Markov models for degradation-based reliability. JO - IIE Transactions JF - IIE Transactions Y1 - 2010/08// VL - 42 IS - 8 M3 - Article SP - 599 EP - 612 PB - Taylor & Francis Ltd SN - 0740817X AB - This article presents hybrid, degradation-based reliability models for a single-unit system whose degradation is driven by a semi-Markov environment. The primary objective is to develop a mathematical framework and associated computational techniques that unite environmental data and stochastic failure models to assess the current or future health of the system. By employing phase-type distributions, it is possible to construct a surrogate environment process that is amenable to analysis by exact Markovian techniques to obtain reliability estimates. The viability of the proposed approach and the quality of the approximations are demonstrated in two numerical experiments. The numerical results indicate that remarkably accurate lifetime distribution and moment approximations are attainable. [ABSTRACT FROM AUTHOR] AB - Copyright of IIE Transactions is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RELIABILITY (Engineering) KW - MARKOV processes KW - STOCHASTIC analysis KW - STOCHASTIC processes KW - APPROXIMATION theory KW - NUMERICAL analysis KW - phase-type distributions KW - Reliability KW - semi-Markov environment N1 - Accession Number: 51095662; Kharoufeh, Jeffrey P. 1; Email Address: jkharouf@pitt.edu; Solo, Christopher J. 2; Email Address: christopher.solo@usafa.edu; Ulukus, M. Yasin 1; Affiliations: 1: Department of Industrial Engineering, University of Pittsburgh, 1048 Benedum Hall, 3700 O'Hara Street, Pittsburgh, PA 15261, USA; 2: Department of Mathematical Sciences, US Air Force Academy, 2354 Fairchild Drive, Rm 6D-198, United States Air Force Academy, CO 80840, USA; Issue Info: Aug2010, Vol. 42 Issue 8, p599; Thesaurus Term: RELIABILITY (Engineering); Thesaurus Term: MARKOV processes; Thesaurus Term: STOCHASTIC analysis; Thesaurus Term: STOCHASTIC processes; Thesaurus Term: APPROXIMATION theory; Subject Term: NUMERICAL analysis; Author-Supplied Keyword: phase-type distributions; Author-Supplied Keyword: Reliability; Author-Supplied Keyword: semi-Markov environment; Number of Pages: 14p; Illustrations: 5 Charts, 2 Graphs; Document Type: Article L3 - 10.1080/07408170903394371 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=51095662&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Visbal, Miguel T1 - Simulation of Flow Control Using Dielectric-Barrier-Discharge Plasma Actuators. JO - International Journal of Computational Fluid Dynamics JF - International Journal of Computational Fluid Dynamics Y1 - 2010/08// VL - 24 IS - 7 M3 - Article SP - 235 EP - 235 SN - 10618562 KW - Simulation methods & models KW - Energy consumption KW - Aerodynamics KW - Plasma devices KW - Electric discharges KW - Actuators KW - Symmetry (Physics) KW - Turbulence N1 - Accession Number: 55473959; Visbal, Miguel 1; Affiliations: 1: Air Force Research Laboratory, OH; Issue Info: Aug2010, Vol. 24 Issue 7, p235; Thesaurus Term: Simulation methods & models; Thesaurus Term: Energy consumption; Subject Term: Aerodynamics; Subject Term: Plasma devices; Subject Term: Electric discharges; Subject Term: Actuators; Subject Term: Symmetry (Physics); Subject Term: Turbulence; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.1080/10618562.2010.539823 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=55473959&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Visbal, Miguel R. T1 - Strategies for control of transitional and turbulent flows using plasma-based actuators. JO - International Journal of Computational Fluid Dynamics JF - International Journal of Computational Fluid Dynamics Y1 - 2010/08// VL - 24 IS - 7 M3 - Article SP - 237 EP - 258 SN - 10618562 AB - An exploratory numerical study of the control of transitional and turbulent separated flows by means of dielectric-barrier-discharge (DBD) actuators is presented. The flow fields are simulated employing a high-fidelity Navier-Stokes solver augmented with a phenomenological model representing the plasma-induced body forces imparted by the actuator on the fluid. Several applications are considered, including interaction of an actuator with a laminar boundary layer, suppression of wing stall, control of boundary layer transition on a plate, control of laminar separation over a ramp, and turbulent separation over a wall-mounted hump. Effective suppression of stall over a NACA 0015 airfoil at moderate Reynolds numbers is demonstrated using either co-flow or counter-flow actuators pulsed at a sufficiently high frequency. By contrast, continuous actuation is found to provide little control of separation. For a laminar boundary layer developing along a flat plate, a counter-flow DBD actuator is shown to provide an effective on-demand tripping device. This property is exploited for the suppression of laminar separation over a ramp. Control of turbulent boundary-layer separation over a wall-mounted hump suggests that once the flow is turbulent, control effectiveness is only achieved for higher actuator strengths with implications for the scalability of DBD devices to higher freestream velocities. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Computational Fluid Dynamics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Simulation methods & models KW - Transition flow KW - Turbulence KW - Plasma devices KW - Actuators KW - Electric discharges KW - Navier-Stokes equations KW - Phenomenological theory (Physics) KW - flow control KW - large-eddy simulation KW - plasma actuators KW - transitional flows KW - unsteady flows N1 - Accession Number: 55473962; Visbal, Miguel R. 1; Affiliations: 1: Computational Sciences Branch, Air Vehicles Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Issue Info: Aug2010, Vol. 24 Issue 7, p237; Thesaurus Term: Simulation methods & models; Subject Term: Transition flow; Subject Term: Turbulence; Subject Term: Plasma devices; Subject Term: Actuators; Subject Term: Electric discharges; Subject Term: Navier-Stokes equations; Subject Term: Phenomenological theory (Physics); Author-Supplied Keyword: flow control; Author-Supplied Keyword: large-eddy simulation; Author-Supplied Keyword: plasma actuators; Author-Supplied Keyword: transitional flows; Author-Supplied Keyword: unsteady flows; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 22p; Illustrations: 13 Diagrams, 1 Chart, 11 Graphs; Document Type: Article L3 - 10.1080/10618562.2010.533123 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=55473962&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Gaitonde, Datta T1 - Three-dimensional plasma-based flow control simulations with high-fidelity coupled first-principles approaches. JO - International Journal of Computational Fluid Dynamics JF - International Journal of Computational Fluid Dynamics Y1 - 2010/08// VL - 24 IS - 7 M3 - Article SP - 259 EP - 279 SN - 10618562 AB - Numerical simulations are employed to understand flow control mechanisms of asymmetric dielectric barrier discharges in the context of a NACA 0015 wing section. The body force is obtained separately from phenomenological and first-principles based models, respectively. A procedure to couple unsteady force fields obtained from multi-fluid models to very high-fidelity implicit large-eddy simulations is developed, implemented and evaluated. The article discusses the effect of Reynolds number, angle of attack, actuator strength and location as well as unsteadiness at radio frequency excitation and wide-spectrum duty cycle variation. Turbulence structure, streamwise vorticity generation mechanisms and acoustic fields are described. The results are assimilated in the context of the combined impact of near wall momentum enhancement and transition to turbulence, which appear to be the dominant effects at low- and high-Reynolds numbers respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Computational Fluid Dynamics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Simulation methods & models KW - Numerical analysis KW - Plasma (Ionized gases) KW - Coupled mode theory (Wave-motion) KW - Turbulence KW - Phenomenological theory (Physics) KW - Radio frequency KW - Electronic excitation KW - coupled analyses KW - plasma flow control KW - turbulence N1 - Accession Number: 55473961; Gaitonde, Datta 1; Affiliations: 1: Air Force Research Laboratory, Air Vechicles Directorate, Computational Sciences, Centre, WFAB, USA; Issue Info: Aug2010, Vol. 24 Issue 7, p259; Thesaurus Term: Simulation methods & models; Thesaurus Term: Numerical analysis; Subject Term: Plasma (Ionized gases); Subject Term: Coupled mode theory (Wave-motion); Subject Term: Turbulence; Subject Term: Phenomenological theory (Physics); Subject Term: Radio frequency; Subject Term: Electronic excitation; Author-Supplied Keyword: coupled analyses; Author-Supplied Keyword: plasma flow control; Author-Supplied Keyword: turbulence; Number of Pages: 21p; Illustrations: 10 Diagrams, 13 Graphs; Document Type: Article L3 - 10.1080/10618560902835566 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=55473961&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Frehlich, Rod AU - Sharman, Robert AU - Vandenberghe, Francois AU - Yu, Wei AU - Liu, Yubao AU - Knievel, Jason AU - Jumper, George T1 - Estimates of Cn2 from Numerical Weather Prediction Model Output and Comparison with Thermosonde Data. JO - Journal of Applied Meteorology & Climatology JF - Journal of Applied Meteorology & Climatology Y1 - 2010/08// VL - 49 IS - 8 M3 - Article SP - 1742 EP - 1755 PB - American Meteorological Society SN - 15588424 AB - Area-averaged estimates of Cn2 from high-resolution numerical weather prediction (NWP) model output are produced from local estimates of the spatial structure functions of refractive index with corrections for the inherent smoothing and filtering effects of the underlying NWP model. The key assumptions are the existence of a universal statistical description of small-scale turbulence and a locally universal spatial filter for the NWP model variables. Under these assumptions, spatial structure functions of the NWP model variables can be related to the structure functions of the atmospheric variables and extended to the smaller underresolved scales. The shape of the universal spatial filter is determined by comparisons of model structure functions with the climatological spatial structure function determined from an archive of aircraft data collected in the upper troposphere and lower stratosphere. This method of computing Cn2 has an important advantage over more traditional methods that are based on vertical differences because the structure function–based estimates avoid reference to the turbulence outer length scale. To evaluate the technique, NWP model–derived structure-function estimates of Cn2 are compared with nighttime profiles of Cn2 derived from temperature structure-function sensors attached to a rawinsonde (thermosonde) near Holloman Air Force Base in the United States. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Meteorology & Climatology is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Weather forecasting KW - Troposphere KW - Stratosphere KW - Estimates KW - Atmospheric radio refractivity KW - Turbulence KW - Beamforming KW - Aircraft observations KW - Model evaluation/performance KW - Numerical weather prediction KW - Radiosonde observations N1 - Accession Number: 53420343; Frehlich, Rod 1; Email Address: frehlich@ucar.edu; Sharman, Robert 1; Vandenberghe, Francois 1; Yu, Wei 1; Liu, Yubao 1; Knievel, Jason 1; Jumper, George 2; Affiliations: 1: National Center for Atmospheric Research,* Boulder, Colorado; 2: Battlespace Environment Division, Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts; Issue Info: Aug2010, Vol. 49 Issue 8, p1742; Thesaurus Term: Weather forecasting; Thesaurus Term: Troposphere; Thesaurus Term: Stratosphere; Subject Term: Estimates; Subject Term: Atmospheric radio refractivity; Subject Term: Turbulence; Subject Term: Beamforming; Author-Supplied Keyword: Aircraft observations; Author-Supplied Keyword: Model evaluation/performance; Author-Supplied Keyword: Numerical weather prediction; Author-Supplied Keyword: Radiosonde observations; NAICS/Industry Codes: 541990 All Other Professional, Scientific, and Technical Services; Number of Pages: 14p; Illustrations: 3 Charts, 8 Graphs, 1 Map; Document Type: Article L3 - 10.1175/2010JAMC2350.1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=53420343&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 105100895 T1 - A case of delusional parasitosis associated with multiple lesions at the root of trigeminal nerve. AU - Frazier LG AU - Azad A AU - Scholma RS AU - Joshi KG Y1 - 2010/08// N1 - Accession Number: 105100895. Language: English. Entry Date: 20100921. Revision Date: 20150711. Publication Type: Journal Article; case study; diagnostic images. Journal Subset: Biomedical; Blind Peer Reviewed; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. KW - Delusions -- Etiology KW - Ectoparasitic Infestations -- Psychosocial Factors KW - Trigeminal Nerve -- Pathology KW - Trigeminal Nerve Diseases -- Complications KW - Male KW - Aged KW - Gabapentin -- Therapeutic Use KW - Olanzapine -- Therapeutic Use KW - Delusions -- Drug Therapy SP - 33 EP - 37 JO - Psychiatry (1550-5952) JF - Psychiatry (1550-5952) JA - PSYCHIATRY VL - 7 IS - 8 CY - West Chester, Pennsylvania PB - Matrix Medical Communications, LLC AB - The authors present a patient with multiple pontine lesions who exhibited symptoms consistent with delusional parasitosis. The trigeminal nerve nuclei are located throughout the brainstem. Pathology in either the nuclei or the branches of the fifth cranial nerve has been associated with both sensory and motor disturbances. Delusional parasitosis is a condition in which the patient has the firm belief that small, living organisms have infested his or her skin or other organs. To our knowledge, this is the first case report of delusional parasitosis associated with lesions at the root of the trigeminal nerve. SN - 1550-5952 AD - General Psychiatry Resident, United States Air Force, Wilford Hall Medical Center, Lackland AFB, Texas UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105100895&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Carrell, Scott E. AU - Page, Marianne E. AU - West, James E. AD - U CA, Davis AD - U CA, Davis AD - US Air Force Academy T1 - Sex and Science: How Professor Gender Perpetuates the Gender Gap JO - Quarterly Journal of Economics JF - Quarterly Journal of Economics Y1 - 2010/08// VL - 125 IS - 3 SP - 1101 EP - 1144 SN - 00335533 N1 - Accession Number: 1134147; Keywords: Female; Gender; Women; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 201010 N2 - Why aren't there more women in science? This paper begins to shed light on this question by exploiting data from the U.S. Air Force Academy, where students are randomly assigned to professors for a wide variety of mandatory standardized courses. We focus on the role of professor gender. Our results suggest that although professor gender has little impact on male students, it has a powerful effect on female students' performance in math and science classes, and high-performing female students' likelihood of taking future math and science courses, and graduating with a STEM degree. The estimates are largest for students whose SAT math scores are in the top 5% of the national distribution. The gender gap in course grades and STEM majors is eradicated when high-performing female students are assigned to female professors in mandatory introductory math and science coursework. KW - Higher Education; Research Institutions I23 KW - Economics of Gender; Non-labor Discrimination J16 KW - Professional Labor Markets; Occupational Licensing J44 L3 - http://qje.oxfordjournals.org/content/by/year UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1134147&site=ehost-live&scope=site UR - http://qje.oxfordjournals.org/content/by/year DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Braydich-Stolle, Laura K. AU - Lucas, Benjamin AU - Schrand, Amanda AU - Murdock, Richard C. AU - Lee, Timothy AU - Schlager, John J. AU - Hussain, Saber M. AU - Hofmann, Marie-Claude T1 - Silver Nanoparticles Disrupt GDNF/Fyn kinase Signaling in Spermatogonial Stem Cells. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 2010/08// VL - 116 IS - 2 M3 - Article SP - 577 EP - 589 PB - Oxford University Press / USA SN - 10966080 AB - Silver nanoparticles (Ag-NPs) are being utilized in an increasing number of fields and are components of antibacterial coatings, antistatic materials, superconductors, and biosensors. A number of reports have now described the toxic effects of silver nanoparticles on somatic cells; however, no study has examined their effects on the germ line at the molecular level. Spermatogenesis is a complex biological process that is particularly sensitive to environmental insults. Many chemicals, including ultrafine particles, have a negative effect on the germ line, either by directly affecting the germ cells or by indirectly acting on the somatic cells of the testis. In the present study, we have assessed the impact of different doses of Ag-NPs, as well as their size and biocompatible coating, on the proliferation of mouse spermatogonial stem cells (SSCs), which are at the origin of the germ line in the adult testis. At concentrations ≥ 10 μg/ml, Ag-NPs induced a significant decline in SSCs proliferation, which was also dependent on their size and coating. At the concentration of 10 μg/ml, reactive oxygen species production and/or apoptosis did not seem to play a major role; therefore, we explored other mechanisms to explain the decrease in cell proliferation. Because glial cell line–derived neurotrophic factor (GDNF) is vital for SSC self-renewal in vitro and in vivo, we evaluated the effects of Ag-NPs on GDNF-mediated signaling in these cells. Although the nanoparticles did not reduce GDNF binding or Ret receptor activity, our data revealed that already at a concentration of 10 μg/ml, silver nanoparticles specifically interact with Fyn kinase downstream of Ret and impair SSC proliferation in vitro. In addition, we demonstrated that the particle coating was degraded upon interaction with the intracellular microenvironment, reducing biocompatibility. [ABSTRACT FROM PUBLISHER] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Germ cells KW - Somatic cells KW - Silver -- Physiological effect KW - Nanoparticles -- Physiological effect KW - Spermatogenesis KW - Surface coatings KW - Stem cells KW - Antibody diversity KW - cell signaling KW - Fyn kinase KW - nanoparticle-protein interactions KW - silver nanoparticles KW - spermatogonial stem cells N1 - Accession Number: 52348605; Braydich-Stolle, Laura K. 1; Lucas, Benjamin 2; Schrand, Amanda 1; Murdock, Richard C. 1; Lee, Timothy 2; Schlager, John J. 1; Hussain, Saber M. 1; Hofmann, Marie-Claude 2,3; Email Address: mhofmann@illinois.edu; Affiliations: 1: Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force Research Laboratory/RHPB, Wright-Patterson Air Force Base, Dayton, Ohio 45433; 2: Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, Urbana, Illinois 61802; 3: Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61802; Issue Info: Aug2010, Vol. 116 Issue 2, p577; Thesaurus Term: Germ cells; Thesaurus Term: Somatic cells; Subject Term: Silver -- Physiological effect; Subject Term: Nanoparticles -- Physiological effect; Subject Term: Spermatogenesis; Subject Term: Surface coatings; Subject Term: Stem cells; Subject Term: Antibody diversity; Author-Supplied Keyword: cell signaling; Author-Supplied Keyword: Fyn kinase; Author-Supplied Keyword: nanoparticle-protein interactions; Author-Supplied Keyword: silver nanoparticles; Author-Supplied Keyword: spermatogonial stem cells; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 13p; Illustrations: 1 Color Photograph, 2 Black and White Photographs, 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1093/toxsci/kfq148 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=52348605&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2010-18791-006 AN - 2010-18791-006 AU - Frazier, Leah G. AU - Azad, Alvi AU - Scholma, Randal S. AU - Joshi, Kaustubh G. T1 - A case of delusional parasitosis associated with multiple lesions at the root of trigeminal nerve. JF - Psychiatry JO - Psychiatry JA - Psychiatry (Edgmont) Y1 - 2010/08// VL - 7 IS - 8 SP - 33 EP - 37 CY - US PB - Matrix Medical Communications SN - 1550-5952 AD - Frazier, Leah G. N1 - Accession Number: 2010-18791-006. PMID: 20877531 Other Journal Title: Innovations in Clinical Neuroscience. Partial author list: First Author & Affiliation: Frazier, Leah G.; United States Air Force, Wilford Hall Medical Center, Lackland AFB, San Antonio, TX, US. Release Date: 20110606. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Brain Stem; Delusions; Lesions; Trigeminal Nerve. Minor Descriptor: Pathology. Classification: Physical & Somatoform & Psychogenic Disorders (3290). Population: Human (10); Male (30). Location: US. Age Group: Adulthood (18 yrs & older) (300); Aged (65 yrs & older) (380). Tests & Measures: Mini Mental State Examination. Methodology: Clinical Case Study. References Available: Y. Page Count: 5. Issue Publication Date: Aug, 2010. AB - The authors present a patient with multiple pontine lesions who exhibited symptoms consistent with delusional parasitosis. The trigeminal nerve nuclei are located throughout the brainstem. Pathology in either the nuclei or the branches of the fifth cranial nerve has been associated with both sensory and motor disturbances. Delusional parasitosis is a condition in which the patient has the firm belief that small, living organisms have infested his or her skin or other organs. To our knowledge, this is the first case report of delusional parasitosis associated with lesions at the root of the trigeminal nerve. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - delusional parasitosis KW - multiple lesions KW - trigeminal nerve KW - brain stem KW - pathology KW - 2010 KW - Brain Stem KW - Delusions KW - Lesions KW - Trigeminal Nerve KW - Pathology KW - 2010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-18791-006&site=ehost-live&scope=site UR - leah.frazer@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-18630-004 AN - 2010-18630-004 AU - Ely, Katherine AU - Boyce, Lisa A. AU - Nelson, Johnathan K. AU - Zaccaro, Stephen J. AU - Hernez-Broome, Gina AU - Whyman, Wynne T1 - Evaluating leadership coaching: A review and integrated framework. JF - The Leadership Quarterly JO - The Leadership Quarterly JA - Leadersh Q Y1 - 2010/08// VL - 21 IS - 4 SP - 585 EP - 599 CY - Netherlands PB - Elsevier Science SN - 1048-9843 AD - Ely, Katherine, George Mason University, Department of Psychology, 4400 University Drive, MSN 3F5, Fairfax, VA, US, 22030 N1 - Accession Number: 2010-18630-004. Partial author list: First Author & Affiliation: Ely, Katherine; George Mason University, Fairfax, VA, US. Release Date: 20101011. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Evaluation; Leadership; Methodology; Professional Development; Executive Coaching. Classification: Management & Management Training (3640). Population: Human (10). Methodology: Literature Review; Meta Analysis. References Available: Y. Page Count: 15. Issue Publication Date: Aug, 2010. Copyright Statement: All rights reserved. Elsevier Inc. 2010. AB - Leadership coaching reflects an evolving dynamic between the client and coach that is qualitatively different from most approaches to leadership development and therefore holds particular challenges for evaluation. Based on reviews of academic and practitioner literatures, this paper presents an integrated framework of coaching evaluation that includes formative evaluations of the client, coach, client–coach relationship, and coaching process, as well as summative evaluations based on coaching outcomes. The paper also includes a quantitative synthesis examining evaluation methodologies in 49 leadership coaching studies. The results revealed that self-reported changes in clients' leadership behaviors are the most frequently assessed coaching outcome, followed by clients' perceptions of the effectiveness of coaching. Recommendations to advance coaching evaluation research include the creation of collaborative partnerships between the evaluation stakeholders (client, coach, client's organization, and coaching organization) to facilitate systematic formative evaluations, the collection of multi-source and multi-level data, and the inclusion of distal outcomes in evaluation plans. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - leadership coaching KW - leadership development KW - evaluation KW - methodology KW - 2010 KW - Evaluation KW - Leadership KW - Methodology KW - Professional Development KW - Executive Coaching KW - 2010 DO - 10.1016/j.leaqua.2010.06.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-18630-004&site=ehost-live&scope=site UR - kely@gmu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-16147-001 AN - 2010-16147-001 AU - Myers, Christopher W. AU - Gray, Wayne D. T1 - Visual scan adaptation during repeated visual search. JF - Journal of Vision JO - Journal of Vision JA - J Vis Y1 - 2010/07/07/ VL - 10 IS - 8 CY - US PB - Assn for Research in Vision & Ophthalmology (ARVO) SN - 1534-7362 AD - Myers, Christopher W., Wright-Patterson Air Force Base, 2698 G Street Bldg. 190, Dayton, OH, US, 45433 N1 - Accession Number: 2010-16147-001. PMID: 20884579 Partial author list: First Author & Affiliation: Myers, Christopher W.; Air Force Research Laboratory, Dayton, OH, US. Release Date: 20101025. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Gray, Wayne D. Major Descriptor: Adaptation; Eye Fixation; Visual Search. Classification: Visual Perception (2323). Population: Human (10). Location: US. Methodology: Empirical Study; Quantitative Study. References Available: Y. ArtID: 4. Issue Publication Date: Jul 7, 2010. Publication History: First Posted Date: Jul 7, 2010; First Submitted Date: May 26, 2009. Copyright Statement: ARVO AB - There is no consensus as to how to characterize eye fixations during visual search. On the one hand, J. M. Wolfe, G. A. Alvarez, and T. S. Horowitz (2000) have described them as a haphazard sequence of fixations. On the other hand is research that shows systematic repetition of visual patterns when freely viewing a scene (T. Foulsham & G. Underwood, 2008; D. Noton & L. W. Stark, 1971a). Two experiments are reported that demonstrate the repetition and adaptation of visual scans during visual search, supporting an adaptive scanning hypothesis. When trials were repeated in a simple search task, visual scan similarity and search efficiency increased. These increments in similarity and efficiency demonstrate the systematic and adaptive nature of visual scans to the characteristics of the visual environment during search. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - visual scan adaptation KW - visual search KW - eye fixations KW - 2010 KW - Adaptation KW - Eye Fixation KW - Visual Search KW - 2010 U1 - Sponsor: Air Force Office of Scientific Research. Grant: F49620-03-1-0143. Recipients: Gray, Wayne D. U1 - Sponsor: Office of Naval Research. Grant: N000140310046. Recipients: No recipient indicated DO - 10.1167/10.8.4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-16147-001&site=ehost-live&scope=site UR - ORCID: 0000-0002-1704-7433 UR - UR - christopher.myers@mesa.afmc.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 105025901 T1 - Infant crying among recent African immigrants. AU - Bleah DA AU - Ellett ML Y1 - 2010/07// N1 - Accession Number: 105025901. Language: English. Entry Date: 20100806. Revision Date: 20150818. Publication Type: Journal Article; research; tables/charts. Journal Subset: Blind Peer Reviewed; Core Nursing; Editorial Board Reviewed; Expert Peer Reviewed; Nursing; Peer Reviewed; USA. Special Interest: Women's Health. NLM UID: 8411543. KW - Crying -- In Infancy and Childhood KW - Immigrants KW - Infant Behavior KW - Adult KW - Africa KW - Audiorecording KW - Content Analysis KW - Culture KW - Descriptive Research KW - Descriptive Statistics KW - Human KW - Infant KW - Interviews KW - Literature Review KW - Mothers KW - Open-Ended Questionnaires KW - Structured Questionnaires KW - United States SP - 652 EP - 663 JO - Health Care for Women International JF - Health Care for Women International JA - HEALTH CARE WOMEN INT VL - 31 IS - 7 CY - Oxfordshire, PB - Routledge AB - Studies in non-Western cultures have shown that infants cry very little, probably because they are carried constantly by caregivers. Western literature suggests that the bouts of persistent crying found in infants at least in part result from Western caregiving practices. This study was conducted to describe crying patterns of a small sample (n = 8) of infants born to recent African immigrants to the United States. Audio-recorded interviews were analyzed using content analysis and descriptive statistics. Some infant crying occurred but less than for typical Western babies. Mothers provided reasons why increased crying occurred. Nursing implications of the findings are discussed. SN - 0739-9332 AD - United States Air Force, Wright-Patterson Air Force Base, Ohio, USA U2 - PMID: 20526929. DO - 10.1080/07399331003628446 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105025901&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Kaiser, M. K. AU - Gans, N. R. AU - Dixon, W. E. T1 - Vision-Based Estimation for Guidance, Navigation, and Control of an Aerial Vehicle. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2010/07// VL - 46 IS - 3 M3 - Article SP - 1064 EP - 1077 SN - 00189251 AB - While a Global Positioning System (GPS) is the most widely used sensor modality for aircraft navigation, researchers have been motivated to investigate other navigational sensor modalities because of the desire to operate in GPS denied environments. Due to advances in computer vision and control theory, monocular camera systems have received growing interest as an alternative/collaborative sensor to GPS systems. Cameras can act as navigational sensors by detecting and tracking feature points in an image. Current methods have a limited ability to relate feature points as they enter and leave the camera field of view (FOV). A vision-based position and orientation estimation method for aircraft navigation and control is described. This estimation method accounts for a limited camera FOV by releasing tracked features that are about to leave the FOV and tracking new features. At each time instant that new features are selected for tracking, the previous pose estimate is updated. The vision-based estimation scheme can provide input directly to the vehicle guidance system and autopilot. Simulations are performed wherein the vision-based pose estimation is integrated with a nonlinear flight model of an aircraft. Experimental verification of the pose estimation is performed using the modelled aircraft. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONTROL theory (Mathematics) KW - ESTIMATION theory KW - GLOBAL Positioning System KW - COMPUTER vision KW - AUTOMATIC tracking KW - MONOCULAR vision N1 - Accession Number: 52928554; Kaiser, M. K. 1; Gans, N. R. 2; Dixon, W. E. 3; Email Address: wdixon@ufl.edu; Affiliations: 1: Air Force Research Laboratory; 2: University of Texas, Dallas; 3: University of Florida; Issue Info: Jul2010, Vol. 46 Issue 3, p1064; Thesaurus Term: CONTROL theory (Mathematics); Thesaurus Term: ESTIMATION theory; Subject Term: GLOBAL Positioning System; Subject Term: COMPUTER vision; Subject Term: AUTOMATIC tracking; Subject Term: MONOCULAR vision; Number of Pages: 0p; Illustrations: 4 Black and White Photographs, 10 Diagrams, 10 Graphs; Document Type: Article L3 - 10.1109/TAES.2010.5545174 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=52928554&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Murphey, Thomas W. AU - Cliff, Eugene M. AU - Lane, Steven A. T1 - Matching Space Antenna Deformation Electronic Compensation Strategies to Support Structure Architectures. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2010/07// VL - 46 IS - 3 M3 - Article SP - 1422 EP - 1436 SN - 00189251 AB - Radar systems are engineered to achieve a complex, yet functional, balance between diverse subsystems and competing requirements. One important trade for large deployable space radar antennas is between antenna dimensional stability and electronic signal processing for deformation compensation. This trade is first investigated for several different electronic compensation methods, and compensation capabilities are mapped into structural requirements. Second the structural requirements are translated into appropriate structural architectures. The scope of this study is limited to space radar systems, where loads causing antenna deformations differ significantly from terrestrial systems. Compensation strategies that allow structural requirements to be reduced by several orders of magnitude are identified. When considered early in the systems engineering process, the methods presented herein can be used to form a rationale for the selection and the development of a complementary combination of compensation electronics and structural architectures. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARTIFICIAL satellites KW - SYSTEMS engineering KW - ELECTRONIC pulse techniques KW - RADAR -- Antennas KW - SIGNAL processing N1 - Accession Number: 52928578; Murphey, Thomas W. 1; Email Address: vssv.branch.tasker@kirtland.af.mil; Cliff, Eugene M. 2; Lane, Steven A. 1; Affiliations: 1: Air Force Research Laboratory; 2: Virginia Tech; Issue Info: Jul2010, Vol. 46 Issue 3, p1422; Thesaurus Term: ARTIFICIAL satellites; Thesaurus Term: SYSTEMS engineering; Subject Term: ELECTRONIC pulse techniques; Subject Term: RADAR -- Antennas; Subject Term: SIGNAL processing; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 0p; Illustrations: 4 Black and White Photographs, 5 Diagrams, 2 Charts, 8 Graphs; Document Type: Article L3 - 10.1109/TAES.2010.5545198 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=52928578&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Greco, Maria AU - Stinco, Pietro AU - Gini, Fulvio AU - Rangaswamy, Muralidhar T1 - Impact of Sea Clutter Nonstationarity on Disturbance Covariance Matrix Estimation and CFAR Detector Performance. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2010/07// VL - 46 IS - 3 M3 - Article SP - 1502 EP - 1513 SN - 00189251 AB - Adaptive detection of signals embedded in non-Gaussian clutter is an important challenge for radar engineers. We present an analysis of sea clutter nonstationarity with respect to clutter covariance matrix estimation and its impact on the constant false alarm rate (CFAR) property of the normalized adaptive matched filter (NAMF). Three covariance matrix estimators, e.g., the sample covariance matrix (SCM), the normalized sample covariance matrix (NSCM), and the approximate maximum likelihood (AML) estimators, have been investigated. The impact of nonstationarity, which emerges in the statistical analysis of the clutter data, is measured in terms of probability of false alarm and probability of detection. Performance analysis is presented using both simulated data and measured sea clutter data recorded by two different X-band radars, namely, the Fynmeet radar and the IPIX radar. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANALYSIS of covariance KW - GAUSSIAN distribution KW - RADAR KW - ELECTRONIC systems KW - FALSE alarms N1 - Accession Number: 52928585; Greco, Maria 1; Email Address: m.greco@iet.unipi.it; Stinco, Pietro 1; Gini, Fulvio 1; Rangaswamy, Muralidhar 2; Affiliations: 1: Department of "Ingegneria dell'Informazione", University of Pisa, Via G. Caruso 16, Pisa, Italy; 2: Air Force Research Laboratory/SNHE, 80 Scott Drive, Hanscom Air Force Base, MA 01731-2909; Issue Info: Jul2010, Vol. 46 Issue 3, p1502; Thesaurus Term: ANALYSIS of covariance; Thesaurus Term: GAUSSIAN distribution; Subject Term: RADAR; Subject Term: ELECTRONIC systems; Subject Term: FALSE alarms; Number of Pages: 0p; Illustrations: 1 Chart, 18 Graphs; Document Type: Article L3 - 10.1109/TAES.2010.5545205 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=52928585&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Jian Li AU - Xumin Zhu AU - Stoica, Petre AU - Rangaswamy, Muralidhar T1 - High Resolution Angle-Doppler Imaging for MTI Radar. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2010/07// VL - 46 IS - 3 M3 - Article SP - 1544 EP - 1556 SN - 00189251 AB - To reduce the need for training data or for accurate prior knowledge of the clutter statistics in space-time adaptive processing (STAP), we consider high resolution angle-Doppler imaging by processing each range bin of interest independently. Specifically, we use a weighted least-squares-based iterative adaptive approach (IAA) to form angle-Doppler images of both clutter and targets for each range bin of interest. The resulting angle-Doppler images can be used with localized detection approaches for moving target indication (MTI). We show via numerical examples that the robust and nonparametric IAA algorithm can be used to enhance the MTI performance significantly as compared with existing approaches. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - DOPPLER effect KW - ELECTRONIC systems KW - ELECTRONIC pulse techniques KW - RADAR N1 - Accession Number: 52928589; Jian Li 1; Email Address: li@dsp.ufl.edu; Xumin Zhu 1; Stoica, Petre 2; Rangaswamy, Muralidhar 3; Affiliations: 1: Dept. of Electrical and Computer Engineering, University of Florida, Gainesville, FL 32611-6130; 2: Dept. of Information Technology, Uppsala University, Uppsala, Sweden; 3: Air Force Research Laboratory Sensors Directorate, Hanscom AFB, MA 01731; Issue Info: Jul2010, Vol. 46 Issue 3, p1544; Thesaurus Term: ALGORITHMS; Subject Term: DOPPLER effect; Subject Term: ELECTRONIC systems; Subject Term: ELECTRONIC pulse techniques; Subject Term: RADAR; Number of Pages: 0p; Illustrations: 11 Graphs; Document Type: Article L3 - 10.1109/TAES.2010.5545209 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=52928589&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Fleming, Timothy P. AU - Lambrecht, Michael R. AU - Cartwright, Keith L. T1 - Numerical Simulations of a Relativistic Inverted Magnetron. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2010/07// Y1 - 2010/07// VL - 38 IS - 7 M3 - Article SP - 1563 EP - 1573 SN - 00933813 AB - A new design for an inverted magnetron is presented and modeled both analytically, using a single particle smooth bore relativistic approach, and numerically, using a massively parallel electromagnetic particle-in-cell code, Improved Concurrent Electromagnetic Particle-In-Cell (ICEPIC) code. Analysis and simulation confirm that the inverted magnetron design presented here is capable of oscillating in the π mode at axial magnetic fields of the order of ∼0.1 T. ICEPIC simulations demonstrate that the inverted magnetron is capable of fast start-up, mitigation of mode competition, π-mode dominance, and high output power, of the order of 1 GW in some cases. Moreover, these performance features spanned over a variety of magnetic fields and input voltages. In simulations, the inverted magnetron design presented here demonstrated that end-loss current, a common source of energy leakage in relativistic magnetrons, has been eliminated as a source of energy loss. However, radio frequency output power efficiencies only remained comparable with standard relativistic designs. This was due to poor energy exchange between the particle and field. Thus, a refinement of the slow wave structure may be necessary. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - COMPUTER simulation KW - SMOOTHNESS of functions KW - MICROWAVES KW - ELECTROMAGNETISM KW - ENERGY dissipation N1 - Accession Number: 52316370; Source Information: Jul2010, Vol. 38 Issue 7, p1563; Subject Term: MAGNETRONS; Subject Term: COMPUTER simulation; Subject Term: SMOOTHNESS of functions; Subject Term: MICROWAVES; Subject Term: ELECTROMAGNETISM; Subject Term: ENERGY dissipation; Subject Term: ; Number of Pages: 11p; ; Document Type: Article; L3 - 10.1109/TPS.2010.2048209 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=52316370&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Repperger, D. W. AU - Farris, K. A. T1 - Stochastic resonance-a nonlinear control theory interpretation. JO - International Journal of Systems Science JF - International Journal of Systems Science Y1 - 2010/07// VL - 41 IS - 7 M3 - Article SP - 897 EP - 907 SN - 00207721 AB - Stochastic resonance (SR) is an effect that has been known (Benzi, R., Sutera, A., and Vulpiani, A. (1981), 'The Mechanism of Stochastic Resonance', Journal of Physics, A14, L453-L457) for almost three decades and has been extensively studied in biology, statistics, signal processing and in numerous other eclectic areas (Wiesenfeld, K., and Moss, F. (1995), 'Stochastic Resonance and the Benefits of Noise: From Ice Ages to Crayfish and Squids', Nature, 373, 33-36). Herein, a nonlinear control theory analysis is conducted on how to better understand the class of systems that may exhibit the SR effect. Using nonlinear control theory methods, equilibrium points are manipulated to create the SR response (similar to shaping dynamical response in a phase plane). From this approach, a means of synthesising and designing the appropriate class of nonlinear systems is introduced. New types of nonlinear dynamics that demonstrate the SR effects are discovered, which may have utility in control theory as well as in many diverse applications. A numerical simulation illustrates some powerful attributes of these systems. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Systems Science is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STOCHASTIC analysis KW - SYSTEMS theory KW - SYSTEM analysis KW - MACHINE theory KW - PROCESS control KW - SIGNAL processing KW - biological systems KW - nonlinear dynamics KW - stochastic resonance N1 - Accession Number: 51312194; Repperger, D. W. 1; Farris, K. A. 1; Email Address: katheryn.farris@wpafb.af.mil; Affiliations: 1: Human Performance Wing, Air Force Research Laboratory, AFRL/RHCV, Wright-Patterson Air Force Base, Dayton, OH 45433-7022, USA.; Issue Info: Jul2010, Vol. 41 Issue 7, p897; Thesaurus Term: STOCHASTIC analysis; Thesaurus Term: SYSTEMS theory; Thesaurus Term: SYSTEM analysis; Thesaurus Term: MACHINE theory; Thesaurus Term: PROCESS control; Subject Term: SIGNAL processing; Author-Supplied Keyword: biological systems; Author-Supplied Keyword: nonlinear dynamics; Author-Supplied Keyword: stochastic resonance; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; Number of Pages: 11p; Illustrations: 14 Diagrams, 9 Graphs; Document Type: Article L3 - 10.1080/00207720903494692 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=51312194&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Kajon, Adriana E. AU - Xiaoyan Lu AU - Erdman, Dean D. AU - Louie, Janice AU - Schnurr, David AU - St George, Kirsten AU - Koopmans, Marion P. AU - Allibhai, Taslim AU - Metzgar, David T1 - Molecular Epidemiology and Brief History of Emerging Adenovirus 14-Associated Respiratory Disease in the United States. JO - Journal of Infectious Diseases JF - Journal of Infectious Diseases Y1 - 2010/07//7/1/2010 VL - 202 IS - 1 M3 - Article SP - 93 EP - 103 SN - 00221899 AB - Background. First isolated in the Netherlands in 1955 during an outbreak of acute respiratory disease (ARD) among military recruits, human adenovirus 14 (HAdV-14) has historically been considered rare. With no precedent of circulation in North America, HAdV-14 has been isolated from military and civilian cases of ARD of variable severity since 2003 in the United States. Methods. Ninety-nine isolates from military and civilian cases from different geographic locations and circulation periods were characterized by restriction enzyme analysis of viral DNA and select gene sequencing. Results. All examined viruses were found to be identical and to belong to a new genome type designated "HAdV-14p1" (formerly known as "14a"). Comparative alignments of E1A, hexon, and fiber gene sequences with other subspecies B2 HAdVs suggest that HAdV-14p1, like the closely related HAdV-11a, arose from recombination among similar HAdV-11 and HAdV-14 ancestral strains. A deletion of 2 amino acids in the knob region of the fiber protein is the only identified unique characteristic of HAdV-14p1. Conclusion. The current geographic distribution of HAdV-14p1 involves at least 15 states in the Unites States. The role of the fiber mutations in the recent emergence of HAdV-14p1 ARD in North America warrants further study. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Infectious Diseases is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Molecular epidemiology KW - Pandemics KW - Disease prevalence KW - Communicable diseases -- Transmission KW - Adenovirus diseases KW - DNA restriction enzymes KW - Nucleotide sequence KW - Genetic recombination KW - United States N1 - Accession Number: 51772560; Kajon, Adriana E. 1; Xiaoyan Lu 2; Erdman, Dean D. 2; Louie, Janice 3; Schnurr, David 3; St George, Kirsten 4; Koopmans, Marion P. 5; Allibhai, Taslim 6; Metzgar, David 7; Affiliations: 1: Lovelace Respiratory Research Institute, Albuquerque, New Mexico; 2: Centers for Disease Control and Prevention, Atlanta, Georgia; 3: California Department of Health, Public Health Viral and Rickettsial Disease Laboratory, Richmond; 4: Wadsworth Center, New York State Department of Health, Albany; 5: National Institute for Public Health and the Environment, Bilthoven, the Netherlands; 6: Wilford Hall Medical Center (United States Air Force Lackland Air Force Base), San Antonio, Texas; 7: Department of Respiratory Disease Research, Naval Health Research Center, San Diego, California; Issue Info: 7/1/2010, Vol. 202 Issue 1, p93; Thesaurus Term: Molecular epidemiology; Thesaurus Term: Pandemics; Thesaurus Term: Disease prevalence; Thesaurus Term: Communicable diseases -- Transmission; Subject Term: Adenovirus diseases; Subject Term: DNA restriction enzymes; Subject Term: Nucleotide sequence; Subject Term: Genetic recombination; Subject: United States; Number of Pages: 11p; Illustrations: 3 Diagrams, 3 Charts; Document Type: Article L3 - 10.1086/653083 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=51772560&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hoglund, Evelyn AU - Brungart, Douglas AU - Iyer, Nandini AU - Hamil, James AU - Mobley, Frank AU - Hall, John T1 - Auditory acuity for aircraft in real-world ambient environments. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2010/07// VL - 128 IS - 1 M3 - Article SP - 164 EP - 171 SN - 00014966 AB - Although many psychoacoustic studies have been conducted to examine the detection of masked target sounds, the vast majority of these studies have been conducted in carefully controlled laboratory listening environments, and their results may not apply to the detection of real-world sounds in the presence of naturalistic ambient sound fields. Those studies that have examined the detection of realistic naturally-occurring sounds have been conducted in uncontrolled listening environments (i.e., outdoor listening tests) where the experimenters were unable to precisely control, or even measure, the specific characteristics of the target and masker at the time of the detection judgment. This study represents an attempt to bridge the gap between unrealistic laboratory listening studies and uncontrolled outdoor listening studies through the use of pseudorandomly-presented real world recordings of target and masking sounds. Subjects were asked to detect helicopter signals in the context of an ongoing ambient recording in a two interval detection task. The results show that the signal-to-noise ratio required to detect an aircraft sound varies across different types of ambient environments (i.e., rural, suburban, or urban). [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOUND recordings KW - AMBIENT sounds KW - LISTENING KW - AUDITORY perception KW - SIGNAL-to-noise ratio N1 - Accession Number: 52289508; Hoglund, Evelyn 1; Email Address: hoglund.1@osu.edu; Brungart, Douglas 1; Iyer, Nandini 1; Hamil, James 1; Mobley, Frank 1; Hall, John 1; Affiliations: 1 : Air Force Research Laboratory, Human Effectiveness Directorate, 2610 Seventh Street, WPAFB, Ohio 45433; Source Info: Jul2010, Vol. 128 Issue 1, p164; Subject Term: SOUND recordings; Subject Term: AMBIENT sounds; Subject Term: LISTENING; Subject Term: AUDITORY perception; Subject Term: SIGNAL-to-noise ratio; Number of Pages: 8p; Illustrations: 1 Chart, 6 Graphs; Document Type: Article L3 - 10.1121/1.3438480 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=52289508&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR AU - Wenbo Tang AU - Mathur, Manikandan AU - Haller, George AU - Hahn, Douglas C. AU - Ruggiero, Frank H. T1 - Lagrangian Coherent Structures near a Subtropical Jet Stream. JO - Journal of the Atmospheric Sciences JF - Journal of the Atmospheric Sciences Y1 - 2010/07// VL - 67 IS - 7 M3 - Article SP - 2307 EP - 2319 PB - American Meteorological Society SN - 00224928 AB - Direct Lyapunov exponents and stability results are used to extract and distinguish Lagrangian coherent structures (LCS) from a three-dimensional atmospheric dataset generated from the Weather Research and Forecasting (WRF) model. The numerical model is centered at 19.78°N, 155.55°W, initialized from the Global Forecast System for the case of a subtropical jet stream near Hawaii on 12 December 2002. The LCS are identified that appear to create optical and mechanical turbulence, as evidenced by balloon data collected during a measurement campaign near Hawaii. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Atmospheric Sciences is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Weather forecasting KW - Jet streams KW - Lagrange equations KW - Lyapunov exponents KW - Lyapunov stability KW - Meteorology KW - Hawaii KW - Jets KW - Lagrangian circulation/transport KW - Stability KW - Subtropics N1 - Accession Number: 52351730; Wenbo Tang 1; Mathur, Manikandan 2; Haller, George 2,3; Email Address: george.haller@mcgill.ca; Hahn, Douglas C. 4,5; Ruggiero, Frank H. 4; Affiliations: 1: School of Mathematical and Statistical Sciences, Arizona State University, Tempe, Arizona; 2: Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts; 3: Department of Mechanical Engineering, McGill University, Montreal, Quebec, Canada; 4: Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts; 5: Air Force Weather Weapon System, Hanscom Air Force Base, Massachusetts; Issue Info: Jul2010, Vol. 67 Issue 7, p2307; Thesaurus Term: RESEARCH; Thesaurus Term: Weather forecasting; Thesaurus Term: Jet streams; Subject Term: Lagrange equations; Subject Term: Lyapunov exponents; Subject Term: Lyapunov stability; Subject Term: Meteorology; Subject: Hawaii; Author-Supplied Keyword: Jets; Author-Supplied Keyword: Lagrangian circulation/transport; Author-Supplied Keyword: Stability; Author-Supplied Keyword: Subtropics; NAICS/Industry Codes: 924120 Administration of Conservation Programs; NAICS/Industry Codes: 541990 All Other Professional, Scientific, and Technical Services; Number of Pages: 13p; Illustrations: 10 Graphs; Document Type: Article L3 - 10.1175/2010JAS3176.1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=52351730&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 105056577 T1 - Understanding predictors of engagement within the military. AU - Alarcon G AU - Lyons JB AU - Tartaglia F Y1 - 2010/07//Jul-Sep2010 N1 - Accession Number: 105056577. Language: English. Entry Date: 20101022. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services; Psychiatry/Psychology. NLM UID: 8915802. KW - Employee Attitudes KW - Job Performance KW - Military Personnel -- Psychosocial Factors KW - Military Services KW - Chi Square Test KW - Cross Sectional Studies KW - Data Analysis Software KW - Descriptive Statistics KW - Human KW - Intention KW - Intraprofessional Relations KW - Leadership KW - Organizational Culture KW - Peer Group KW - Professional Role KW - Scales KW - Summated Rating Scaling SP - 301 EP - 310 JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) JA - MILIT PSYCHOL VL - 22 IS - 3 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - The current study explored organizational antecedents of employee engagement in a military organization. A survey was administered to junior military personnel assessing leadership effectiveness, role clarity, organizational culture, and peer group interactions as predictors of engagement. Leadership's influence on engagement was expected to be partially mediated by role clarity and organizational culture. Engagement was predicted to fully mediate the relationship between the aforementioned variables and turnover intentions. Results indicated that leadership's influence on engagement was fully mediated by role clarity and organizational culture. In addition, engagement fully mediated the relationship between all variables and turnover intentions. SN - 0899-5605 AD - Air Force Research Laboratory, Wright Patterson Air Force Base, OH DO - 10.1080/08995605.2010.492695 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105056577&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2010-16583-001 AN - 2010-16583-001 AU - Hassan, Anthony M. AU - Jackson, Robert J. AU - Lindsay, Douglas R. AU - Rank, Michael G. T1 - Combat stress control and prevention: What can be learned from an application of workplace behavioral health in a deployed combat environment? JF - Journal of Workplace Behavioral Health JO - Journal of Workplace Behavioral Health JA - J Workplace Behav Health Y1 - 2010/07// VL - 25 IS - 3 SP - 169 EP - 180 CY - United Kingdom PB - Taylor & Francis SN - 1555-5240 SN - 1555-5259 AD - Hassan, Anthony M., School of Social Work, University of Southern California, 669 West 34th Street, Los Angeles, CA, US, 90089 N1 - Accession Number: 2010-16583-001. Other Journal Title: Employee Assistance Quarterly. Partial author list: First Author & Affiliation: Hassan, Anthony M.; School of Social Work, University of Southern California, Los Angeles, CA, US. Other Publishers: Haworth Press. Release Date: 20100927. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Health Care Psychology; Intervention; Prevention; Stress Management; War. Minor Descriptor: Social Capital. Classification: Health & Mental Health Treatment & Prevention (3300). Population: Human (10). References Available: Y. Page Count: 12. Issue Publication Date: Jul, 2010. Copyright Statement: Taylor & Francis Group, LLC AB - This article details a Combat Stress Control and Prevention (CSCP) team’s tour during Operation Iraqi Freedom. It highlights the similarities between battlefield and Employee Assistance Programs (EAPs) behavioral health care methods and practices. A CSCP team’s mission is to provide battle-front direct mental health services to commanders and combatants via consultation, education, advocacy and proximal prevention, intervention and stabilization, and if indicated, evacuation of overstressed troops. This team’s access, credibility, and social networking were critical in preventing and responding to war-fighter’s combat stressors in a timely manner. As in EAP work, credibility with leadership and bridging social capital are essential components for workplace behavioral health prevention success. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - combat stress control KW - prevention KW - workplace behavioral health KW - deployed combat environment KW - intervention KW - social capital KW - 2010 KW - Health Care Psychology KW - Intervention KW - Prevention KW - Stress Management KW - War KW - Social Capital KW - 2010 DO - 10.1080/15555240.2010.496315 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-16583-001&site=ehost-live&scope=site UR - hassana@usc.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-14403-001 AN - 2010-14403-001 AU - Gawron, Valerie J. AU - McMillan, Grant R. AU - Bailey, Randall E. T1 - The effects of time delay and physical motion on manual flight control: An in-flight and ground-based simulation experiment. JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 2010/07// VL - 20 IS - 3 SP - 221 EP - 248 CY - United Kingdom PB - Taylor & Francis SN - 1050-8414 SN - 1532-7108 AD - Gawron, Valerie J., MITRE Corporation, 7515 Colshire Drive M/S N420, McLean, VA, US, 22102-7539 N1 - Accession Number: 2010-14403-001. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Gawron, Valerie J.; MITRE Corporation, McLean, VA, US. Other Publishers: Lawrence Erlbaum. Release Date: 20100920. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aviation; Perceptual Motor Processes; Time. Minor Descriptor: Flight Simulation. Classification: Transportation (4090). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study; Scientific Simulation. References Available: Y. Page Count: 28. Issue Publication Date: Jul, 2010. Copyright Statement: Taylor & Francis Group, LLC. 2010. AB - An experiment addressed the effects of time delay and physical motion on manual flight control and flying qualities ratings. Flight tasks were presented on a head-up display in a variable-stability NT-33A aircraft. Specified maneuvers were performed under simulated instrument meteorological conditions with variable signal delays added to the flight control system. To assess the effects of physical motion, the same experiment was replicated with the airplane parked on the ground using a digital aerodynamic simulation. Increasing time delay degraded tracking performance more in the no-motion ground-based simulation than in the full-motion in-flight simulation. Similar results occurred for flying qualities ratings. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - time delay KW - physical motion KW - manual flight control KW - ground based simulation KW - in-flight KW - 2010 KW - Aviation KW - Perceptual Motor Processes KW - Time KW - Flight Simulation KW - 2010 U1 - Sponsor: US Air Force, US. Grant: F33615-83-C-3603. Recipients: No recipient indicated DO - 10.1080/10508414.2010.487007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-14403-001&site=ehost-live&scope=site UR - vgawron@mitre.org DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-14696-004 AN - 2010-14696-004 AU - Alarcon, Gene AU - Lyons, Joseph B. AU - Tartaglia, Frank T1 - Understanding predictors of engagement within the military. JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2010/07// VL - 22 IS - 3 SP - 301 EP - 310 CY - United Kingdom PB - Taylor & Francis SN - 0899-5605 SN - 1532-7876 AD - Alarcon, Gene, Wright Patterson AFB, 2698 G St., Bldg. 190, Dayton, OH, US, 45433-7604 N1 - Accession Number: 2010-14696-004. Partial author list: First Author & Affiliation: Alarcon, Gene; Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH, US. Other Publishers: Educational Publishing Foundation; Lawrence Erlbaum. Release Date: 20100920. Correction Date: 20140811. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Employee Attitudes; Employee Turnover; Leadership; Military Personnel; Organizational Characteristics. Minor Descriptor: Intention; Prediction. Classification: Military Psychology (3800). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: Role Ambiguity Scale DOI: 10.1037/t17815-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Jul, 2010. Copyright Statement: Taylor & Francis Group, LLC AB - The current study explored organizational antecedents of employee engagement in a military organization. A survey was administered to junior military personnel assessing leadership effectiveness, role clarity, organizational culture, and peer group interactions as predictors of engagement. Leadership's influence on engagement was expected to be partially mediated by role clarity and organizational culture. Engagement was predicted to fully mediate the relationship between the aforementioned variables and turnover intentions. Results indicated that leadership's influence on engagement was fully mediated by role clarity and organizational culture. In addition, engagement fully mediated the relationship between all variables and turnover intentions. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - prediction KW - employee engagement KW - military personnel KW - organizational antecedents KW - leadership KW - turnover intention KW - 2010 KW - Employee Attitudes KW - Employee Turnover KW - Leadership KW - Military Personnel KW - Organizational Characteristics KW - Intention KW - Prediction KW - 2010 DO - 10.1080/08995605.2010.492695 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-14696-004&site=ehost-live&scope=site UR - gene.alarcon.ctr@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-11773-007 AN - 2010-11773-007 AU - Bleah, Doris A. AU - Ellett, Marsha L. T1 - Infant crying among recent African immigrants. JF - Health Care for Women International JO - Health Care for Women International JA - Health Care Women Int Y1 - 2010/07// VL - 31 IS - 7 SP - 652 EP - 663 CY - United Kingdom PB - Taylor & Francis SN - 0739-9332 SN - 1096-4665 AD - Bleah, Doris A., Wright-Patterson Medical Center, 4881 Sugar-Maple Drive, Wright-Patterson Air Force Base, OH, US, 45433 N1 - Accession Number: 2010-11773-007. PMID: 20526929 Partial author list: First Author & Affiliation: Bleah, Doris A.; United States Air Force, Wright-Patterson Air Force Base, OH, US. Release Date: 20100823. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Caregivers; Child Care; Crying; Immigration; Infant Vocalization. Minor Descriptor: African Cultural Groups. Classification: Childrearing & Child Care (2956). Population: Human (10); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study; Interview; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: Jul, 2010. Copyright Statement: Taylor & Francis Group, LLC AB - Studies in non-Western cultures have shown that infants cry very little, probably because they are carried constantly by caregivers. Western literature suggests that the bouts of persistent crying found in infants at least in part result from Western caregiving practices. This study was conducted to describe crying patterns of a small sample (n = 8) of infants born to recent African immigrants to the United States. Audio-recorded interviews were analyzed using content analysis and descriptive statistics. Some infant crying occurred but less than for typical Western babies. Mothers provided reasons why increased crying occurred. Nursing implications of the findings are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Infant crying patterns KW - African immigrants KW - non Western cultures KW - caregivers KW - cultural differences in childcare KW - 2010 KW - Caregivers KW - Child Care KW - Crying KW - Immigration KW - Infant Vocalization KW - African Cultural Groups KW - 2010 DO - 10.1080/07399331003628446 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-11773-007&site=ehost-live&scope=site UR - doris.bleah@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - OSUR, ALAN T1 - Fighting for Hope: African American Troops of the 93rd Infantry Division in World War II and Postwar America. JO - American Historical Review JF - American Historical Review J1 - American Historical Review PY - 2010/06// Y1 - 2010/06// VL - 115 IS - 3 M3 - Book Review SP - 858 EP - 858 PB - Oxford University Press / USA SN - 00028762 AB - The article reviews the book "Fighting for Hope: African American Troops of the 93rd Infantry Division in World War II and Postwar America," by Robert F. Jefferson. KW - FIGHTING for Hope: African American Troops of the 93rd Infantry Division in World War II & Postwar America (Book) KW - JEFFERSON, Robert F. KW - WORLD War, 1939-1945 -- African Americans KW - NONFICTION N1 - Accession Number: 51895174; Source Information: Jun2010, Vol. 115 Issue 3, p858; Subject Term: FIGHTING for Hope: African American Troops of the 93rd Infantry Division in World War II & Postwar America (Book); Subject Term: JEFFERSON, Robert F.; Subject Term: WORLD War, 1939-1945 -- African Americans; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2/3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=51895174&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Gauthier, Michael L. AU - Petersen, Walter A. AU - Carey, Lawrence D. T1 - Cell mergers and their impact on cloud-to-ground lightning over the Houston area JO - Atmospheric Research JF - Atmospheric Research Y1 - 2010/06// VL - 96 IS - 4 M3 - Article SP - 626 EP - 632 SN - 01698095 AB - Abstract: A previous hypothesis advanced from observational studies such as METROMEX suggests that the intensity, frequency, and organization of cumulus convection may be impacted by the forcing of enhanced merger activity downstream of urban zones. A resulting corollary is that cities may exert an indirect anthropogenic “forcing” of parameters related to convection and associated phenomena such as lightning and precipitation. This paper investigates the urban-merger hypothesis by examining the role of convective cell mergers on the existence and persistence of the Houston lightning “anomaly”, a local maximum in cloud-to-ground (CG) lightning activity documented to exist over and east of Houston. Using eight summer seasons of peak columnar radar reflectivity, CG lightning data and a cell-tracking algorithm, a two-dimensional cell merger climatology is created for portions of Eastern Texas and Louisiana. Results from the tracking and analysis of over 3.8 million cells indicate that merger-driven enhancements in convection induce a positive response (O 46%) in ground flash densities throughout the domain, with areas of enhanced lightning typically being co-located with areas of enhanced merger activity. However, while mergers over the Houston area (relative to elsewhere in the domain) do result in more vigorous convective cells that produce larger CG flash densities, we find that CG lightning contributions due to mergers are distributed similarly throughout the domain. Hence while we demonstrate that cell mergers do greatly impact the production of lightning, the urban cell merger hypothesis does not uniquely explain the presence of a local lightning maximum near and downstream of Houston. [Copyright &y& Elsevier] AB - Copyright of Atmospheric Research is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Lightning KW - Cell adhesion KW - Precipitation (Meteorology) KW - Climatology KW - Observation (Scientific method) KW - METROMEX KW - Radar KW - Houston (Tex.) KW - Texas KW - Cell merger N1 - Accession Number: 50356995; Gauthier, Michael L. 1; Email Address: Michael.Gauthier@USAFA.edu; Petersen, Walter A. 2; Carey, Lawrence D. 3; Affiliations: 1: United States Air Force Academy, Department of Physics, 2354 Fairchild Hall, Suite 2A29, USAF Academy, Colorado 80840, United States; 2: NASA Marshall Space Flight Center, NSSTC/Earth Sciences Office VP-61, 320 Sparkman Drive, Huntsville, Alabama 35805, United States; 3: Earth System Science Center, National Space Science and Technology Center, University of Alabama in Huntsville, 320 Sparkman Drive, Huntsville, Alabama 35805, United States; Issue Info: Jun2010, Vol. 96 Issue 4, p626; Thesaurus Term: Lightning; Thesaurus Term: Cell adhesion; Thesaurus Term: Precipitation (Meteorology); Thesaurus Term: Climatology; Subject Term: Observation (Scientific method); Subject Term: METROMEX; Subject Term: Radar; Subject: Houston (Tex.); Subject: Texas; Author-Supplied Keyword: Cell merger; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.atmosres.2010.02.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=50356995&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Atapour, M. AU - Pilchak, A. AU - Frankel, G. S. AU - Williams, J. C. AU - Fathi, M. H. AU - Shamanian, M. T1 - Corrosion Behavior of Ti-6Al-4V with Different Thermomechanical Treatments and Microstructures. JO - Corrosion JF - Corrosion Y1 - 2010/06// VL - 66 IS - 6 M3 - Article SP - 004-1 EP - 004-9 SN - 00109312 AB - The corrosion behavior of four different microstructures of Ti-6Al-4V with varying volume fractions of primary α (0, 10%~20%, 40%~50%, and ~90%) was investigated in sodium chloride (NaCl) and hydrochloric acid (HCI) solutions. The microstructure constituent morphologies and distributions were characterized with optical and scanning electron microscopy (SEM) while constituent compositions were determined with energy-dispersive x-ray (EDX) analysis. AU four microstructures exhibited spontaneous passivity in 0.9% NaCl at 37°C and active/passive transitions in 1.5 M HCl at 37°C. Very little difference in corrosion rate was observed using potentiodynamic polarization curves and weight-loss tests. However, SEM analysis of corroded surfaces indicated that the fully lameUar structure (0% primary α) exhibited the worst attack. Analysis of surfaces after 48 h immersion in 3.5 M HCl revealed that α/Β phase boundaries were preferential sites for corrosion attack. Also,Β phase in lameUar structures exhibited preferential dissolution in comparison to a phase. The corrosion results are discussed in terms of microstructure and constituent composition. In particular, the extent of partitioning of vanadium to the Β phase during heat treatment varies with the volume fractions of primary α and transform Β, which affects the corrosion performance in aggressive environments. [ABSTRACT FROM AUTHOR] AB - Copyright of Corrosion is the property of NACE International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Corrosion & anti-corrosives KW - Hydrochloric acid KW - Titanium KW - Metals -- Thermomechanical treatment KW - Microstructure KW - Salt KW - corrosion KW - microstructures KW - thermomechanical treatments KW - titanium N1 - Accession Number: 51541379; Atapour, M. 1,2; Pilchak, A. 1,3; Frankel, G. S. 1; Email Address: frankel.10@osu.edu; Williams, J. C. 1; Fathi, M. H. 2; Shamanian, M. 2; Affiliations: 1: Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210; 2: Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran; 3: Universal Technology Corporation, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433; Issue Info: Jun2010, Vol. 66 Issue 6, p004-1; Thesaurus Term: Corrosion & anti-corrosives; Thesaurus Term: Hydrochloric acid; Subject Term: Titanium; Subject Term: Metals -- Thermomechanical treatment; Subject Term: Microstructure; Subject Term: Salt; Author-Supplied Keyword: corrosion; Author-Supplied Keyword: microstructures; Author-Supplied Keyword: thermomechanical treatments; Author-Supplied Keyword: titanium; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 311942 Spice and Extract Manufacturing; NAICS/Industry Codes: 311940 Seasoning and dressing manufacturing; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 9p; Illustrations: 4 Black and White Photographs, 2 Diagrams, 3 Charts, 5 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=51541379&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Kim, Kristopher T. T1 - Truncation-Error Reduction in 2D Cylindrical/Spherical Near-Field Scanning. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2010/06// Y1 - 2010/06// VL - 58 IS - 6 M3 - Article SP - 2153 EP - 2158 SN - 0018926X AB - We introduce a near-field to far-field transformation for two-dimensional cylindrical/spherical scanning that significantly reduces angular-truncation errors. After examining the limitations of the traditional multipole-based expansion of truncated scan data, we consider an alternative expansion based on Slepian functions and show how far-field values can be extracted from the resulting expansion coefficients. We compare the performance and computational cost of the new transformation with those of the traditional one. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSFORMATIONS (Mathematics) KW - FUNCTIONS (Mathematics) KW - ASYMPTOTIC expansions KW - ERROR analysis (Mathematics) KW - COST analysis N1 - Accession Number: 51309301; Source Information: Jun2010, Vol. 58 Issue 6, p2153; Subject Term: TRANSFORMATIONS (Mathematics); Subject Term: FUNCTIONS (Mathematics); Subject Term: ASYMPTOTIC expansions; Subject Term: ERROR analysis (Mathematics); Subject Term: COST analysis; Subject Term: ; Number of Pages: 6p; ; Document Type: Article; L3 - 10.1109/TAP.2010.2046850 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=51309301&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Hoff, Brad W. AU - Franzi, Matthew AU - Gilgenbach, Ronald M. AU - Lau, Y. Y. T1 - Three-Dimensional Simulations of Magnetic Priming of a Relativistic Magnetron. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2010/06// Y1 - 2010/06// VL - 38 IS - 6 M3 - Article SP - 1292 EP - 1301 SN - 00933813 AB - Using a hybrid approach, 3-D simulations of magnetic priming of a relativistic magnetron have been performed. The primed magnetic field values were calculated using a magnetostatics code (Magnum) and then imported into a particle-in-cell code (Magic PIC) and run for the case of a six-vane relativistic magnetron. The magnetically perturbative structures chosen for implementation in these simulations were sets of three highpermeability wires of various lengths, which would be placed within the cathode, the anode, or, in the combined case, both the cathode and anode. In the best-performing cathode-wire case (three 4-cm wires), magnetic priming was found to reduce the start-oscillation time of the magnetron to 50% that of the unprimed case. When wires were embedded in both the cathode and the anode, the best-performing case (4-cm cathode wires and 4-cm anode wires) was found to start oscillating at 30% of the start-oscillation time of the unprimed case. The cases of magnetically primed magnetrons were found to exhibit slightly reduced equilibrium power levels, compared with the unprimed case. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - MAGNETIC fields KW - MAGNETOSTATICS KW - CATHODES KW - ANODES N1 - Accession Number: 51431495; Source Information: Jun2010, Vol. 38 Issue 6, p1292; Subject Term: MAGNETRONS; Subject Term: MAGNETIC fields; Subject Term: MAGNETOSTATICS; Subject Term: CATHODES; Subject Term: ANODES; Subject Term: ; Number of Pages: 10p; ; Document Type: Article; L3 - 10.1109/TPS.2010.2046186 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=51431495&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Shiffler, Don AU - Luginsland, John AU - French, David M. AU - Watrous, Jack T1 - A Cerenkov-like Maser Based on a Metamaterial Structure. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2010/06// Y1 - 2010/06// VL - 38 IS - 6 M3 - Article SP - 1462 EP - 1465 SN - 00933813 AB - Microwave and radio frequency (RF) sources have been a subject of intense research for nearly 100 years, with the advent of High-Power Microwave (HPM) sources based upon intense relativistic electron beams emerging in the 1970s. These sources act to transform kinetic energy in an electron beam into radiation through the interaction of the electrons with some form of external circuit. One form of HPM device, the Cerenkov maser, consists of a hollow cylinder loaded with a dielectric material. The dielectric forms a slow-wave structure with which the relativistic beam can interact. This paper considers a new design approach and interaction mechanism for a Cerenkov maser. For the first time, a dielectric Cerenkov maser formed using microwave metamaterials in the form of a concentric ring structure was considered in the study. The authors proposed that metamaterials provide a practical new opportunity for vacuum electron devices, opening the means for new sources operating in the RF and microwave to THz regimes. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVES KW - RADIO frequency discharges KW - ELECTRON beams KW - METAMATERIALS KW - BANDWIDTHS N1 - Accession Number: 51431499; Source Information: Jun2010, Vol. 38 Issue 6, p1462; Subject Term: MICROWAVES; Subject Term: RADIO frequency discharges; Subject Term: ELECTRON beams; Subject Term: METAMATERIALS; Subject Term: BANDWIDTHS; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1109/TPS.2010.2046914 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=51431499&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Trohalaki, Steven AU - Pachter, Ruth T1 - Mechanism of hydrogen production in [Fe–Fe]-hydrogenases: A quantum mechanics/molecular mechanics study JO - International Journal of Hydrogen Energy JF - International Journal of Hydrogen Energy Y1 - 2010/06// VL - 35 IS - 11 M3 - Article SP - 5318 EP - 5331 SN - 03603199 AB - Abstract: [Fe–Fe]-hydrogenases are a class of metalloenzymes that catalyze the production of H2 from two protons and two electrons. Crystal structures for [Fe–Fe]-hydrogenases found in two species –Clostridium pasteurianum (CpI) and Desulfovibrio desulfuricans (DdH) – show very similar active sites. However, the catalytic mechanism has not as yet been fully clarified. We employed density functional theory (DFT) within a QM/MM method to investigate proposed mechanisms of hydrogen production by DdH and CpI hydrogenases and their dependence on the protein environment of the active sites. For each mechanism investigated, we found only minor differences between the CpI and DdH hydrogenases in terms of the intermediate active site structures, although one mechanism follows a lower energy path for DdH hydrogenase, while the other mechanism follows a lower energy path for the CpI hydrogenase. We note, however, that the high activation energy we calculated for a step unique to one of the mechanisms might preclude it, making the energy-path comparison for the two mechanisms unnecessary. [Copyright &y& Elsevier] AB - Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Hydrogen production KW - Iron KW - Binding sites (Biochemistry) KW - Quantum theory KW - Hydrogenase KW - Molecular structure KW - Density functionals KW - All-iron hydrogenase KW - Hydrogenase mechanism KW - QM/MM N1 - Accession Number: 50933264; Trohalaki, Steven 1,2; Email Address: steven.trohalaki@wpafb.af.mil; Pachter, Ruth 1; Email Address: ruth.pachter@wpafb.af.mil; Affiliations: 1: Materials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; 2: General Dynamics Information Technology, Inc., 5100 Springfield Pike, Suite 509, Dayton, OH 45431-1264, USA; Issue Info: Jun2010, Vol. 35 Issue 11, p5318; Thesaurus Term: Hydrogen production; Thesaurus Term: Iron; Thesaurus Term: Binding sites (Biochemistry); Subject Term: Quantum theory; Subject Term: Hydrogenase; Subject Term: Molecular structure; Subject Term: Density functionals; Author-Supplied Keyword: All-iron hydrogenase; Author-Supplied Keyword: Hydrogenase mechanism; Author-Supplied Keyword: QM/MM; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.ijhydene.2010.03.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=50933264&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Gerald Matthews AU - Lauren E. Reinerman-Jones AU - David A. Washburn AU - Joel S. Warm AU - Lisa K. Langheim AU - Lloyd Tripp T1 - Task Engagement, Cerebral Blood Flow Velocity, and Diagnostic Monitoring for Sustained Attention. JO - Journal of Experimental Psychology. Applied JF - Journal of Experimental Psychology. Applied Y1 - 2010/06// VL - 16 IS - 2 M3 - Article SP - 187 EP - 203 SN - 1076898X AB - Loss of vigilance may lead to impaired performance in various applied settings including military operations, transportation, and industrial inspection. Individuals differ considerably in sustained attention, but individual differences in vigilance have proven to be hard to predict. The dependence of vigilance on workload factors is consistent with a resource model of sustained attention. Thus, measures of attentional resource availability may predict the operator's subsequent vigilance performance. In this study, we investigated whether a diagnostic battery of measures of response to a cognitive challenge would predict subsequent sustained attention. Measures that may relate to the mobilization of resources in response to task demands include subjective task engagement and coping, and a novel psychophysiological index, cerebral bloodflow velocity (CBFV). A two-phase design was used. First, participants were exposed to a challenging battery of short tasks that elevated CBFV. Second, participants performed a 36-min vigilance task. Two subgroups of participants performed either a sensory vigilance (N = 187) or a cognitive vigilance (N = 107) task. Measures of task engagement, coping, and CBFV response to the short task battery were compared as predictors of subsequent vigilance. Both subjective and CBFV indices of energization predicted sensory and cognitive vigilance, consistent with resource theory. Structural equation modeling was used to develop a latent factor model of influences on sustained attention. It is concluded that measures of resources, conceptualized as multiple energization processes, are potentially useful for diagnostic monitoring in applied settings. Use of a diagnostic task battery in military and transportation settings is discussed, along with some potential limitations on validity of the diagnostic test. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Experimental Psychology. Applied is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSPORTATION KW - VIGILANCE (Psychology) KW - SPECIAL operations (Military science) KW - PSYCHOPHYSIOLOGY KW - SENSORY evaluation KW - attention KW - cerebral bloodflow KW - energy KW - task engagement KW - vigilance N1 - Accession Number: 60582832; Gerald Matthews 1; Email Address: gerald.matthews@uc.edu; Lauren E. Reinerman-Jones 2; David A. Washburn 3; Joel S. Warm 4; Lisa K. Langheim 1; Lloyd Tripp 4; Affiliations: 1: Department of Psychology, University of Cincinnati.; 2: Institute for Simulation and Training, University of Central Florida.; 3: Department of Psychology, Georgia State University.; 4: Air Force Research Laboratory, Wright-Patterson Air Force Base.; Issue Info: Jun2010, Vol. 16 Issue 2, p187; Thesaurus Term: TRANSPORTATION; Subject Term: VIGILANCE (Psychology); Subject Term: SPECIAL operations (Military science); Subject Term: PSYCHOPHYSIOLOGY; Subject Term: SENSORY evaluation; Author-Supplied Keyword: attention; Author-Supplied Keyword: cerebral bloodflow; Author-Supplied Keyword: energy; Author-Supplied Keyword: task engagement; Author-Supplied Keyword: vigilance; NAICS/Industry Codes: 488990 Other support activities for transportation; NAICS/Industry Codes: 488999 All Other Support Activities for Transportation; Number of Pages: 17p; Document Type: Article L3 - 10.1037/a0019572 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=60582832&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - ZAGRAI, ANDREI AU - DOYLE, DEREK AU - GIGINEISHVILI, VLASI AU - Brown, Jacob AU - GARDENIER, HUGH AU - ARRITT, BRANDON T1 - Piezoelectric Wafer Active Sensor Structural Health Monitoring of Space Structures. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2010/06// VL - 21 IS - 9 M3 - Article SP - 921 EP - 940 SN - 1045389X AB - Structural Health Monitoring (SHM) is a valuable tool for in-service assessment of structural condition. Despite a broad use in many engineering fields, SHM has seen limited application in space systems. This article explores specifics of SHM applied to space systems and satellites in particular. It is suggested that SHM may be considered for aiding rapid assembly of spacecraft components, monitoring system dynamics during launch, and model updating from an assessment of in-service variation of structural properties. The article presents a discussion of factors affecting realization of the SHM system for spacecraft and provides recommendations for the system configuration and its practical use. The SHM system design based on a network of piezoelectric active sensors is considered. System operation focuses on SHM of improperly tightened bolts, assessment of adhesive bonds, and embedded material characterization techniques. Synergistic use of the same hardware for acoustoelastic, non-linear acoustic, and material characterization methods is recommended, and further system integration options are proposed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYSTEMS design KW - SYSTEM analysis KW - PIEZOELECTRIC devices KW - PIEZOELECTRIC materials KW - DETECTORS KW - LARGE space structures (Astronautics) KW - SPACE frame structures KW - embedded intelligence KW - piezoelectric KW - structural health monitoring N1 - Accession Number: 51197221; ZAGRAI, ANDREI 1; Email Address: azagrai@nmt.edu; DOYLE, DEREK 2; GIGINEISHVILI, VLASI 1; Brown, Jacob 1,2; GARDENIER, HUGH 2; ARRITT, BRANDON 2; Affiliations: 1: Department of Mechanical Engineering, New Mexico Institute of Mining and Technology, 801 Leroy Pl., 124 Weir Hall Socorro, NM 87801, USA; 2: Air Force Research Laboratory Space Vehicles Directorate, 3550 Aberdeen Ave. SE, Kirtland AFB, NM 87117, USA; Issue Info: Jun2010, Vol. 21 Issue 9, p921; Thesaurus Term: SYSTEMS design; Thesaurus Term: SYSTEM analysis; Subject Term: PIEZOELECTRIC devices; Subject Term: PIEZOELECTRIC materials; Subject Term: DETECTORS; Subject Term: LARGE space structures (Astronautics); Subject Term: SPACE frame structures; Author-Supplied Keyword: embedded intelligence; Author-Supplied Keyword: piezoelectric; Author-Supplied Keyword: structural health monitoring; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 20p; Illustrations: 2 Diagrams, 6 Graphs; Document Type: Article L3 - 10.1177/1045389X10369850 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=51197221&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Carrell, Scott E. AU - West, James E. AD - U CA, Davis AD - US Air Force Academy T1 - Does Professor Quality Matter? Evidence from Random Assignment of Students to Professors JO - Journal of Political Economy JF - Journal of Political Economy Y1 - 2010/06// VL - 118 IS - 3 SP - 409 EP - 432 SN - 00223808 N1 - Accession Number: 1120230; Keywords: Education; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 201008 N2 - In primary and secondary education, measures of teacher quality are often based on contemporaneous student performance on standardized achievement tests. In the postsecondary environment, scores on student evaluations of professors are typically used to measure teaching quality. We possess unique data that allow us to measure relative student performance in mandatory follow-on classes. We compare metrics that capture these three different notions of instructional quality and present evidence that professors who excel at promoting contemporaneous student achievement teach in ways that improve their student evaluations but harm the follow-on achievement of their students in more advanced classes. KW - Higher Education; Research Institutions I23 L3 - http://www.jstor.org/action/showPublication?journalCode=jpoliecon UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1120230&site=ehost-live&scope=site UR - http://www.jstor.org/action/showPublication?journalCode=jpoliecon DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 2011-23693-005 AN - 2011-23693-005 AU - Ojeda, Arnulfo H. AU - Ree, Malcolm James AU - Carretta, Thomas R. T1 - Personality similarities and differences between Mexican and American business leaders. JF - Journal of Leadership Studies JO - Journal of Leadership Studies Y1 - 2010///Sum 2010 VL - 4 IS - 2 SP - 40 EP - 47 CY - US PB - John Wiley & Sons SN - 1935-2611 SN - 1935-262X AD - Ojeda, Arnulfo H. N1 - Accession Number: 2011-23693-005. Partial author list: First Author & Affiliation: Ojeda, Arnulfo H.; Bexar County (Texas) Juvenile Detention Center, TX, US. Release Date: 20111121. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Business and Industrial Personnel; Cross Cultural Differences; Leadership; Personality Traits. Classification: Management & Management Training (3640). Population: Human (10); Male (30); Female (40). Location: Mexico; US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: 16PF (Sixteen Personality Factor Questionnaire). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 8. Issue Publication Date: Sum 2010. Copyright Statement: University of Phoenix. 2010. AB - A study was conducted to investigate personality similarities and differences for a group of 200 business leaders, 100 each from Southern Mexico and the United States. Mexican and American leaders were administered the Sixteen Personality Factor Questionnaire (16PF) in their native language (Spanish or English). A demographic questionnaire solicited information about age, education, and gender. These variables were used as covariates in some analyses. After controlling for the effects of age, gender, and education level, the authors found that Mexican leaders scored higher than their American counterparts on the warmth, emotional stability, social boldness, and openness to change scales. American leaders scored higher on the abstractedness and self-reliance scales. On scales related to leadership there were between-nationality differences on emotional stability, social boldness, abstractedness, and self-reliance. Additional studies are suggested to illuminate cross-nationality similarities and differences. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - personality traits KW - cross cultural differences KW - leadership KW - business leaders KW - 2010 KW - Business and Industrial Personnel KW - Cross Cultural Differences KW - Leadership KW - Personality Traits KW - 2010 DO - 10.1002/jls.20167 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-23693-005&site=ehost-live&scope=site UR - Thomas.Catrretta@wpafb.af.mil UR - mree@satx.rr.com UR - aojeda@bexar.org DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-05086-003 AN - 2011-05086-003 AU - Slife, Brent D. AU - Burchfield, Colin AU - Hedges, Dawson T1 - Interpreting the 'biologization' of psychology. JF - Journal of Mind and Behavior JO - Journal of Mind and Behavior Y1 - 2010///Sum-Aut 2010 VL - 31 IS - 3-4 SP - 165 EP - 178 CY - US PB - Institute of Mind and Behavior SN - 0271-0137 AD - Slife, Brent D., Department of Psychology, Brigham Young University, 1001 SWKT, Provo, UT, US, 84602 N1 - Accession Number: 2011-05086-003. Partial author list: First Author & Affiliation: Slife, Brent D.; Brigham Young University, Provo, UT, US. Release Date: 20110509. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cognition; Psychology. Minor Descriptor: Biology; Sociocultural Factors. Classification: General Psychology (2100). Population: Human (10). References Available: Y. Page Count: 14. Issue Publication Date: Sum-Aut 2010. Copyright Statement: The Institute of Mind and Behavior, Inc. 2010. AB - Behavior and cognition, once conceived as psychological or interpersonal in origin, are increasingly thought to arise from biology. After investigating the validity of this trend of thinking, the article attempts to interpret what it means to the discipline of psychology. Two main categories of interpretation are discussed. First, this trend could mean that biological factors ultimately underlie traditionally psychological explanations i.e., biological factors are a sufficient condition for understanding behavior and cognition. Second, this trend could indicate that biological factors are important, and perhaps even traditionally overlooked, but are not sufficient in themselves to explain human behavior and cognition i.e., biological factors are necessary conditions among other necessary conditions. The practical and methodological implications of each of these two interpretations are clarified, with a special focus on relevant research limitations. We conclude that the evidence does not bear out a sufficiency thesis and, instead, supports more convincingly a necessity understanding of these trends. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - biologization KW - psychology KW - cognition KW - sociocultural factors KW - human behavior KW - 2010 KW - Cognition KW - Psychology KW - Biology KW - Sociocultural Factors KW - 2010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-05086-003&site=ehost-live&scope=site UR - brent_slife@byu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-12508-008 AN - 2010-12508-008 AU - Matthews, Gerald AU - Warm, Joel S. AU - Reinerman-Jones, Lauren E. AU - Langheim, Lisa K. AU - Washburn, David A. AU - Tripp, Lloyd T1 - Task engagement, cerebral blood flow velocity, and diagnostic monitoring for sustained attention. JF - Journal of Experimental Psychology: Applied JO - Journal of Experimental Psychology: Applied JA - J Exp Psychol Appl Y1 - 2010/06// VL - 16 IS - 2 SP - 187 EP - 203 CY - US PB - American Psychological Association SN - 1076-898X SN - 1939-2192 AD - Matthews, Gerald, Department of Psychology, University of Cincinnati, 429 Dyer Hall, Cincinnati, OH, US, 45221-0376 N1 - Accession Number: 2010-12508-008. PMID: 20565203 Partial author list: First Author & Affiliation: Matthews, Gerald; Department of Psychology, University of Cincinnati, Cincinnati, OH, US. Release Date: 20100621. Correction Date: 20140317. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cerebral Blood Flow; Psychophysiology; Sustained Attention; Vigilance. Minor Descriptor: Coping Behavior; Energy Expenditure; Human Channel Capacity. Classification: Attention (2346); Psychophysiology (2560). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Coping in Task Situations; Dundee Stress State Questionnaire DOI: 10.1037/t27031-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 17. Issue Publication Date: Jun, 2010. Publication History: Accepted Date: Mar 8, 2010; Revised Date: Feb 25, 2010; First Submitted Date: Aug 18, 2009. Copyright Statement: American Psychological Association. 2010. AB - Loss of vigilance may lead to impaired performance in various applied settings including military operations, transportation, and industrial inspection. Individuals differ considerably in sustained attention, but individual differences in vigilance have proven to be hard to predict. The dependence of vigilance on workload factors is consistent with a resource model of sustained attention. Thus, measures of attentional resource availability may predict the operator's subsequent vigilance performance. In this study, we investigated whether a diagnostic battery of measures of response to a cognitive challenge would predict subsequent sustained attention. Measures that may relate to the mobilization of resources in response to task demands include subjective task engagement and coping, and a novel psychophysiological index, cerebral bloodflow velocity (CBFV). A two-phase design was used. First, participants were exposed to a challenging battery of short tasks that elevated CBFV. Second, participants performed a 36-min vigilance task. Two subgroups of participants performed either a sensory vigilance (N = 187) or a cognitive vigilance (N = 107) task. Measures of task engagement, coping, and CBFV response to the short task battery were compared as predictors of subsequent vigilance. Both subjective and CBFV indices of energization predicted sensory and cognitive vigilance, consistent with resource theory. Structural equation modeling was used to develop a latent factor model of influences on sustained attention. It is concluded that measures of resources, conceptualized as multiple energization processes, are potentially useful for diagnostic monitoring in applied settings. Use of a diagnostic task battery in military and transportation settings is discussed, along with some potential limitations on validity of the diagnostic test. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - attention KW - cerebral blood flow KW - energy KW - task engagement KW - vigilance KW - task demand KW - psychophysiology KW - coping KW - 2010 KW - Cerebral Blood Flow KW - Psychophysiology KW - Sustained Attention KW - Vigilance KW - Coping Behavior KW - Energy Expenditure KW - Human Channel Capacity KW - 2010 U1 - Sponsor: US Army Medical Research and Material Command, US. Grant: W23RYX-3106-N605. Recipients: No recipient indicated DO - 10.1037/a0019572 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-12508-008&site=ehost-live&scope=site UR - gerald.matthews@uc.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-07473-008 AN - 2010-07473-008 AU - Zanov, Marat V. AU - Davison, Gerald C. T1 - A conceptual and empirical review of 25 years of cognitive assessment using the Articulated Thoughts in Simulated Situations (ATSS) think-aloud paradigm. JF - Cognitive Therapy and Research JO - Cognitive Therapy and Research JA - Cognit Ther Res Y1 - 2010/06// VL - 34 IS - 3 SP - 282 EP - 291 CY - Germany PB - Springer SN - 0147-5916 SN - 1573-2819 AD - Zanov, Marat V., United States Air Force, Mental Health Clinic, Aviano, Italy N1 - Accession Number: 2010-07473-008. Partial author list: First Author & Affiliation: Zanov, Marat V.; United States Air Force, Mental Health Clinic, Aviano, Italy. Release Date: 20100503. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cognitions; Cognitive Assessment; Experimentation; Methodology; Psychometrics. Minor Descriptor: Clinical Practice. Classification: Psychometrics & Statistics & Methodology (2200); Health & Mental Health Treatment & Prevention (3300). Population: Human (10). Methodology: Literature Review. References Available: Y. Page Count: 10. Issue Publication Date: Jun, 2010. Publication History: First Posted Date: Oct 1, 2009. Copyright Statement: Springer Science+Business Media, LLC. 2009. AB - The present paper is a conceptual analysis and empirical review of research using the Articulated Thoughts in Simulated Situations (Davison et al. in Cogn Ther Res 7(1): 17–39, 1983) paradigm, a think-aloud cognitive assessment approach that is intended to capture ongoing thinking in an analogue, controlled environment of considerable interpersonal complexity. From an examination of over 25 years of the paradigm’s usage and in light of comments from scores of ATSS users, we have expanded upon and updated an earlier review (Davison et al. in J Consult Clin Psychol 65(6): 950–958, 1997). In addition to an empirical update, we describe the ATSS in greater methodological and psychometric detail, highlight its strengths and discuss its weaknesses, address some practical concerns, and comment on the evidence accumulated from the close to 70 studies employing the paradigm. We conclude that the ATSS paradigm is useful in assessing complex cognitions in a variety of investigator-controlled situations. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - ATSS KW - Articulated Thoughts in Simulated Situations KW - cognitive assessment KW - thinking KW - research methodology KW - psychometrics KW - cognitions KW - clinical assessment KW - 2010 KW - Cognitions KW - Cognitive Assessment KW - Experimentation KW - Methodology KW - Psychometrics KW - Clinical Practice KW - 2010 DO - 10.1007/s10608-009-9271-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-07473-008&site=ehost-live&scope=site UR - gdaviso@usc.edu UR - dr.zanov@gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-10908-002 AN - 2010-10908-002 AU - Shaw, Tyler H. AU - Matthews, Gerald AU - Warm, Joel S. AU - Finomore, Victor S. AU - Silverman, Leanne AU - Costa, Paul T. Jr. T1 - Individual differences in vigilance: Personality, ability and states of stress. JF - Journal of Research in Personality JO - Journal of Research in Personality JA - J Res Pers Y1 - 2010/06// VL - 44 IS - 3 SP - 297 EP - 308 CY - Netherlands PB - Elsevier Science SN - 0092-6566 AD - Matthews, Gerald, Department of Psychology, University of Cincinnati, Cincinnati, OH, US, 45221 N1 - Accession Number: 2010-10908-002. Partial author list: First Author & Affiliation: Shaw, Tyler H.; Department of Psychology, George Mason University, Fairfax, VA, US. Release Date: 20100830. Correction Date: 20160616. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Ability; Individual Differences; Personality Traits; Stress; Vigilance. Classification: Personality Traits & Processes (3120). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: NEO—Five–Factor Personality Inventory; Oxford—Liverpool Inventory of Feelings Short Scales; Young Attention Deficit Disorder with Hyperactivity Questionnaire—Self Report Scale; Factor–Referenced Cognitive Tests; Advanced Vocabulary Test; Coping Inventory for Task Situations; Vigilance Tasks; Cognitive Failures Questionnaire DOI: 10.1037/t00791-000; Epworth Sleepiness Scale DOI: 10.1037/t07081-000; Pittsburgh Sleep Quality Index DOI: 10.1037/t05178-000; Fatigue Assessment Scale DOI: 10.1037/t03811-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: Jun, 2010. Publication History: First Posted Date: Mar 27, 2010. Copyright Statement: All rights reserved. Elsevier Inc. 2010. AB - Vigilance is notoriously hard to predict from personality measures. This study adopted a new multivariate approach based on attentional resource theory. Measures were taken of the Five Factor Model (FFM), more narrowly-defined ‘cognitive–energetic’ traits, cognitive ability and stress and coping scales. Participants (210) performed one of two related high-workload visual vigilance tasks. Results showed that personality traits were weak predictors of correct detection rate, although extraversion was negatively correlated with performance. Ability, subjective task engagement and coping scales were more strongly associated with vigilance. However, both the FFM and cognitive–energetic factors related to subjective states experienced during performance. Data support multivariate approaches to the prediction of vigilance based on attentional resource theory. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - individual differences KW - vigilance KW - personality traits KW - ability KW - stress states KW - 2010 KW - Ability KW - Individual Differences KW - Personality Traits KW - Stress KW - Vigilance KW - 2010 U1 - Sponsor: Army Research Institute. Grant: W74V8H-06-C-0049; 06-S-1003. Recipients: No recipient indicated U1 - Sponsor: JXT Corporation. Recipients: No recipient indicated DO - 10.1016/j.jrp.2010.02.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-10908-002&site=ehost-live&scope=site UR - Gerald.Matthews@uc.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-10938-002 AN - 2010-10938-002 AU - Marsh, Royden W. AU - Sowin, Timothy W. AU - Thompson, William T. T1 - Panic disorder in military advisors: A retrospective study of prevalence. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2010/06// VL - 81 IS - 6 SP - 589 EP - 592 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Marsh, Royden W., 2507 Kennedy Circle, Brooks City-Base, TX, US, 78235-5116 N1 - Accession Number: 2010-10938-002. PMID: 20540452 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Marsh, Royden W.; United States Air Force School of Aerospace Medicine, Brooks City-Base, TX, US. Release Date: 20110613. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Epidemiology; Military Personnel; Panic Disorder. Minor Descriptor: Aircraft Pilots; Medicare. Classification: Neuroses & Anxiety Disorders (3215); Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Longitudinal Study; Retrospective Study; Quantitative Study. References Available: Y. Page Count: 4. Issue Publication Date: Jun, 2010. Copyright Statement: Aerospace Medical Association AB - Introduction: The occurrence of panic disorder (PD) among military pilots and navigators poses questions with respect to medical care and waiver policy, but the prevalence of such disorders is unclear. We studied the epidemiology of PD in a USAF aircrew population. Methods: Occurrence of PD during the period 2001 -2008 was determined using the USAF Aeromedical Information Management Waiver Tracking System, a database containing medical disqualifications and waivers for the entire population of both qualified and disqualified (grounded) USAF aviators. Results: The mean annual USAF pilot and navigator population averaged 17,727 during the study period. The database yielded nine cases labeled as PD. After records review by two experienced aeromedical psychiatrists, only three of the nine cases met diagnostic criteria for PD. Estimated annual PD prevalence was 0.002% (2/100,000) in USAF pilots and navigators. Annual prevalence of PD was 2.7% in the general U.S. population 18 yr of age and older and 2.4% in a group of manager/professionals. Odds ratios were 1228 (55/27,269) and 1089 (49/24,175) for the general population and manager/professionals, respectively. Discussion: One of three individuals with PD received a waiver to resume flying after successful treatment. Five of the six cases not meeting criteria for PD (but suffering from varying degrees of situational and/or stress related anxiety) were flying with waivers. The negligible annual PD prevalence in USAF pilots and navigators likely reflects lower aircrew vulnerability to PD because of selection and training processes and does not pose a disease burden upon force strength. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - military personnel KW - panic disorder KW - epidemiology KW - military pilots KW - medical care KW - 2010 KW - Epidemiology KW - Military Personnel KW - Panic Disorder KW - Aircraft Pilots KW - Medicare KW - 2010 DO - 10.3357/ASEM.2678.2010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-10938-002&site=ehost-live&scope=site UR - royden.marsh.ctr@brooks.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Christ, John A. AU - Ramsburg, C. Andrew AU - Pennell, Kurt D. AU - Abriola, Linda M. T1 - Predicting DNAPL mass discharge from pool-dominated source zones JO - Journal of Contaminant Hydrology JF - Journal of Contaminant Hydrology Y1 - 2010/05/20/ VL - 114 IS - 1-4 M3 - Article SP - 18 EP - 34 SN - 01697722 AB - Abstract: Models that link simplified descriptions of dense non-aqueous phase liquid (DNAPL) source zone architecture with predictions of mass flux can be effective screening tools for evaluation of source zone management strategies. Recent efforts have focused on the development and implementation of upscaled models to approximate the relationship between mass removal and flux-averaged, down-gradient contaminant concentration (or mass flux) reduction. The efficacy of these methods has been demonstrated for ganglia-dominated source zones. This work extends these methods to source zones dominated by high-saturation DNAPL pools. An existing upscaled mass transfer model was modified to reproduce dissolution behavior in pool-dominated scenarios by employing a two-domain (ganglia and pools) representation of the source zone. The two-domain upscaled model is parameterized using the initial fraction of the source zone that exists as pool regions, the initial fraction of contaminant eluting from these pool regions, and the flux-averaged down-gradient contaminant concentration. Comparisons of model predictions with a series of three-dimensional source zone numerical simulations and data from two-dimensional aquifer cell experiments demonstrate the ability of the model to predict DNAPL dissolution from ganglia- and pool-dominated source zones for all levels of mass recovery. [Copyright &y& Elsevier] AB - Copyright of Journal of Contaminant Hydrology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Liquids KW - Chemical reduction KW - Contamination (Technology) KW - Computer simulation KW - Prediction theory KW - Phase rule & equilibrium KW - Mass transfer KW - Ganglia KW - DNAPL KW - Modeling KW - Remediation KW - Source zone KW - Upscaled N1 - Accession Number: 50356951; Christ, John A. 1; Email Address: john.christ@usafa.edu; Ramsburg, C. Andrew 2; Pennell, Kurt D. 2; Abriola, Linda M. 2; Affiliations: 1: Department of Civil and Environmental Engineering, US Air Force Academy, Colorado Springs, CO, USA; 2: Department of Civil and Environmental Engineering, Tufts University, Medford, MA, USA; Issue Info: May2010, Vol. 114 Issue 1-4, p18; Thesaurus Term: Liquids; Thesaurus Term: Chemical reduction; Thesaurus Term: Contamination (Technology); Thesaurus Term: Computer simulation; Subject Term: Prediction theory; Subject Term: Phase rule & equilibrium; Subject Term: Mass transfer; Subject Term: Ganglia; Author-Supplied Keyword: DNAPL; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Remediation; Author-Supplied Keyword: Source zone; Author-Supplied Keyword: Upscaled; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.jconhyd.2010.02.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=50356951&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Trei, Jill S. AU - Johns, Natalie M. AU - Garner, Jason L. AU - Noel, Lawrence B. AU - Ortman, Brian V. AU - Ensz, Kari L. AU - Johns, Matthew C. AU - Bunning, Michel L. AU - Gaydos, Joel C. T1 - Spread of Adenovirus to Geographically Dispersed Military Installations, May-October 2007. JO - Emerging Infectious Diseases JF - Emerging Infectious Diseases Y1 - 2010/05// VL - 16 IS - 5 M3 - Article SP - 769 EP - 775 PB - Centers for Disease Control & Prevention (CDC) SN - 10806040 AB - In mid-May 2007, a respiratory disease outbreak associated with adenovirus, serotype B14 (Ad14), was recognized at a large military basic training facility in Texas. The affected population was highly mobile; after the 6-week basic training course, trainees immediately dispersed to advanced training sites worldwide. Accordingly, enhanced surveillance and control efforts were instituted at sites receiving the most trainees. Specimens from patients with pneumonia or febrile respiratory illness were tested for respiratory pathogens by using cultures and reverse transcription-PCR During May through October 2007, a total of 959 specimens were collected from 21 sites; 43.1% were adenovirus positive; the Ad14 serotype accounted for 95.3% of adenovirus isolates. Ad14 was identified at 8 sites in California, Florida, Mississippi, Texas, and South Korea. Ad14 spread readily to secondary sites after the initial outbreak. Military and civilian planners must consider how best to control the spread of infectious respiratory diseases in highly mobile populations traveling between diverse geographic locations. [ABSTRACT FROM AUTHOR] AB - Copyright of Emerging Infectious Diseases is the property of Centers for Disease Control & Prevention (CDC) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Adenoviruses KW - DNA viruses KW - Adenovirus diseases KW - American military bases KW - Respiratory diseases KW - Texas N1 - Accession Number: 51382861; Trei, Jill S. 1; Johns, Natalie M. 1; Email Address: natalie.johns@pentagon.af.mil; Garner, Jason L. 1; Noel, Lawrence B. 2; Ortman, Brian V. 2; Ensz, Kari L. 3; Johns, Matthew C. 1; Bunning, Michel L. 4; Gaydos, Joel C. 5; Affiliations: 1: United States Air Force School of Aerospace Medicine, San Antonio, Texas, USA; 2: Air Education and Training Command. San Antonio; 3: Sheppard Air Force Base, Wichita Falls, Texas, USA; 4: Lackland Air Force Base, San Antonio; 5: Armed Forces Health Surveillance Center, Silver Spring, Maryland, USA; Issue Info: May2010, Vol. 16 Issue 5, p769; Thesaurus Term: Adenoviruses; Thesaurus Term: DNA viruses; Subject Term: Adenovirus diseases; Subject Term: American military bases; Subject Term: Respiratory diseases; Subject: Texas; NAICS/Industry Codes: 928110 National Security; Number of Pages: 7p; Illustrations: 1 Diagram, 2 Charts, 1 Graph, 1 Map; Document Type: Article L3 - 10.3201/eid1605.091633 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=51382861&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 105181239 T1 - Spread of adenovirus to geographically dispersed military installations, May-October 2007. AU - Trei JS AU - Johns NM AU - Garner JL AU - Noel LB AU - Ortman BV AU - Ensz KL AU - Johns MC AU - Bunning ML AU - Gaydos JC Y1 - 2010/05// N1 - Accession Number: 105181239. Language: English. Entry Date: 20100813. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Biomedical; USA. NLM UID: 9508155. KW - DNA Virus Infections -- Transmission KW - Viruses KW - Military Personnel KW - DNA Virus Infections -- Epidemiology KW - DNA Virus Infections KW - Adolescence KW - Adult KW - Disease Outbreaks KW - Female KW - Geographic Factors KW - Male KW - Pneumonia, Viral -- Epidemiology KW - Pneumonia, Viral -- Transmission KW - Pneumonia, Viral KW - Population Surveillance KW - South Korea KW - Time Factors KW - Travel KW - United States SP - 769 EP - 775 JO - Emerging Infectious Diseases JF - Emerging Infectious Diseases JA - EMERGING INFECT DIS VL - 16 IS - 5 CY - Atlanta, Georgia PB - Centers for Disease Control & Prevention (CDC) SN - 1080-6040 AD - United States Air Force School of Aerospace Medicine, San Antonio, Texas, USA. U2 - PMID: 20409365. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105181239&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Dewey, S. C. AU - Whetston, Z. D. AU - Kearfott, K. J. T1 - A NUMERICAL METHOD FOR THE CALIBRATION OF IN SITU GAMMA RAY SPECTROSCOPY SYSTEMS. JO - Health Physics JF - Health Physics Y1 - 2010/05// VL - 98 IS - 5 M3 - Article SP - 657 EP - 671 SN - 00179078 AB - The article discusses research on a more flexible numerical method for calibrating gamma ray spectroscope systems in situ. Responses to the detector are analytically calculated using the Monte Carlo radiation transport simulations for the verification of results. Method used for the calculation is flexible which includes geometric measurements and media attenuation properties. Results showed that the method is adding an approximately 5% of uncertainty to other uncertainties related to the calibration of detector systems. KW - Ionizing radiation KW - Physics instruments -- Calibration KW - Gamma ray spectrometer KW - Engineering instruments -- Calibration KW - Detectors KW - calibration KW - detector, germanium KW - radioactivity, environmental KW - spectrometry, gamma N1 - Accession Number: 50248831; Dewey, S. C. 1; Whetston, Z. D. 2; Kearfott, K. J. 2; Email Address: kearfoutt@hotmail.com; Affiliations: 1: United States Air Force School of Aerospace Medicine, Occupational Environmental Health Division, Health Physics Branch, Radiation Analysis Laboratories, 2350 Gillingham Drive, Brooks City-Base, TX 78235; 2: Radiological Health Engineering Laboratory, Department of Nuclear Engineering and Radiological Sciences, University of Michigan, 2355 Bonisteel Boulevard, 1906 Cooley Building, Ann Arbor, MI 48109-2104; Issue Info: May2010, Vol. 98 Issue 5, p657; Thesaurus Term: Ionizing radiation; Subject Term: Physics instruments -- Calibration; Subject Term: Gamma ray spectrometer; Subject Term: Engineering instruments -- Calibration; Subject Term: Detectors; Author-Supplied Keyword: calibration; Author-Supplied Keyword: detector, germanium; Author-Supplied Keyword: radioactivity, environmental; Author-Supplied Keyword: spectrometry, gamma; Number of Pages: 15p; Illustrations: 3 Diagrams, 5 Charts, 3 Graphs; Document Type: Article L3 - 10.1097/HP.0b013e3181ca8ba8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=50248831&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Perlovsky, Leonid I. T1 - Neural Mechanisms of the Mind, Aristotle, Zadeh, and fMRI. JO - IEEE Transactions on Neural Networks JF - IEEE Transactions on Neural Networks J1 - IEEE Transactions on Neural Networks PY - 2010/05// Y1 - 2010/05// VL - 21 IS - 5 M3 - Article SP - 718 EP - 733 SN - 10459227 AB - Processes in the mind: perception, cognition, concepts, instincts, emotions, and higher cognitive abilities for abstract thinking, beautiful music are considered here within a neural modeling fields (NMFs) paradigm. Its fundamental mathematical mechanism is a process "from vague-fuzzy to crisp," called dynamic logic (DL). This paper discusses why this paradigm is necessary mathematically, and relates it to a psychological description of the mind. Surprisingly, the process from "vague to crisp" corresponds to Aristotelian understanding of mental functioning. Recent functional magnetic resonance imaging (fMRI) measurements confirmed this process in neural mechanisms of perception. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Neural Networks is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC resonance imaging KW - COMPUTATIONAL complexity KW - FUZZY logic KW - EMOTIONS (Psychology) & cognition KW - DIAGNOSTIC imaging KW - EMOTIONS (Psychology) N1 - Accession Number: 50796347; Source Information: May2010, Vol. 21 Issue 5, p718; Subject Term: MAGNETIC resonance imaging; Subject Term: COMPUTATIONAL complexity; Subject Term: FUZZY logic; Subject Term: EMOTIONS (Psychology) & cognition; Subject Term: DIAGNOSTIC imaging; Subject Term: EMOTIONS (Psychology); Subject Term: ; Number of Pages: 16p; ; Document Type: Article; L3 - 10.1109/TNN.2010.2041250 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=50796347&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Lei Ding AU - Melodia, Tommaso AU - Batalama, Stella N. AU - Matyjas, John D. AU - Medley, Michael J. T1 - Cross-Layer Routing and Dynamic Spectrum Allocation in Cognitive Radio Ad Hoc Networks. JO - IEEE Transactions on Vehicular Technology JF - IEEE Transactions on Vehicular Technology Y1 - 2010/05// VL - 59 IS - 4 M3 - Article SP - 1969 EP - 1979 SN - 00189545 AB - Throughput maximization is one of the main challenges in cognitive radio ad hoc networks, where the availability of local spectrum resources may change from time to time and hop by hop. For this reason, a cross-layer opportunistic spectrum access and dynamic routing algorithm for cognitive radio networks is proposed, which is called the routing and dynamic spectrumal-location (ROSA) algorithm. Through local control actions, ROSA aims to maximize the network throughput by performing joint routing, dynamic spectrum allocation, scheduling, and transmit power control. Specifically, the algorithm dynamically allocates spectrum resources to maximize the capacity of links without generating harmful interference to other users while guaranteeing a bounded bit error rate (BER) for the receiver. In addition, the algorithm aims to maximize the weighted sum of differential backlogs to stabilize the system by giving priority to higher capacity links with a high differential backlog. The proposed algorithm is distributed, computationally efficient, and has bounded BER guarantees. ROSA is shown through numerical model-based evaluation and discrete-event packet-level simulations to outperform baseline solutions, leading to a high throughput, low delay, and fair bandwidth allocation. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Vehicular Technology is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Research KW - Radio networks KW - Ad hoc networks (Computer networks) KW - Computer networks KW - Wireless communication systems KW - Vehicular ad hoc networks (Computer networks) KW - Ad hoc networks KW - cognitive radio networks KW - cross-layer design KW - dynamic spectrum allocation KW - routing N1 - Accession Number: 50995471; Lei Ding 1; Email Address: leiding@buffalo.edu; Melodia, Tommaso 1,2; Email Address: tmelodia@buffalo.edu; Batalama, Stella N. 1,2; Email Address: batalama@buffalo.edu; Matyjas, John D. 3,4; Email Address: john.matyjas@rl.af.mil; Medley, Michael J. 3,4,5; Email Address: michael.medley@rl.af.mil; Affiliations: 1: Department of Electrical Engineering, The State University of New York at Buffalo, Buffalo, NY 14260 USA; 2: Member, IEEE; 3: U.S. Air Force Research Laboratory, Rome, NY 13441 USA; 4: State University of New York Institute of Technology, Utica, NY 13502 USA; 5: Senior Member, IEEE; Issue Info: May2010, Vol. 59 Issue 4, p1969; Thesaurus Term: Research; Subject Term: Radio networks; Subject Term: Ad hoc networks (Computer networks); Subject Term: Computer networks; Subject Term: Wireless communication systems; Subject Term: Vehicular ad hoc networks (Computer networks); Author-Supplied Keyword: Ad hoc networks; Author-Supplied Keyword: cognitive radio networks; Author-Supplied Keyword: cross-layer design; Author-Supplied Keyword: dynamic spectrum allocation; Author-Supplied Keyword: routing; NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; NAICS/Industry Codes: 515111 Radio Networks; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TVT.2010.2045403 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=50995471&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Riggins, David W. AU - Moorhouse, David J. AU - Camberos, Jose A. T1 - Characterization of Aerospace Vehicle Performance and Mission Analysis Using Thermodynamic Availability. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2010/05//May/Jun2010 Y1 - 2010/05//May/Jun2010 VL - 47 IS - 3 M3 - Article SP - 904 EP - 916 SN - 00218669 AB - The fundamental relationship between entropy and aerospace vehicle and mission performance is analyzed in terms of the general availability rate balance between force-based vehicle performance, available energy associated with expended propellant, and the overall loss rate of availability, including the vehicle wake. The availability relationship for a vehicle is analytically combined with the vehicle equations of motion; this combination yields the balance between on-board energy rate usage and rates of changes in kinetic and potential energies of the vehicle and overall rate of entropy production. This result is then integrated over time for a general aerospace mission; as examples, simplified single-stage-to-orbit rocket-powered and air-breathing missions are analyzed. Examination of rate of availability loss for the general case of an accelerating, climbing aerospace vehicle provides a powerful loss superposition principle in terms of the separate evaluation and combination of loss rates for the same vehicle in cruise, acceleration, and climb. Rate of availability losses is also examined in terms of separable losses associated with the propulsion system and external aerodynamics. These loss terms are cast in terms of conventional parameters such as drag coefficient and engine specific impulse. Finally, rate losses in availability for classes of vehicles are described. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENTROPY KW - AERONAUTICS KW - SPACE vehicles KW - PROPELLANTS KW - THERMODYNAMICS KW - AERODYNAMICS KW - FLUID dynamics KW - AEROSPACE engineering N1 - Accession Number: 52330875; Source Information: May/Jun2010, Vol. 47 Issue 3, p904; Subject Term: ENTROPY; Subject Term: AERONAUTICS; Subject Term: SPACE vehicles; Subject Term: PROPELLANTS; Subject Term: THERMODYNAMICS; Subject Term: AERODYNAMICS; Subject Term: FLUID dynamics; Subject Term: AEROSPACE engineering; Subject Term: ; Number of Pages: 13p; ; Illustrations: 6 Graphs; ; Document Type: Article; L3 - 10.2514/1.46420 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=52330875&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Missoum, Samy AU - Dribusch, Christoph AU - Beran, Philip T1 - Reliability-Based Design Optimization of Nonlinear Aeroelasticity Problems. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2010/05//May/Jun2010 Y1 - 2010/05//May/Jun2010 VL - 47 IS - 3 M3 - Article SP - 992 EP - 998 SN - 00218669 AB - This paper introduces a methodology for the reliability-based design optimization of systems with nonlinear aeroelastic constraints. The approach is based on the construction of explicit flutter and subcritical limit cycle oscillation boundaries in terms of deterministic and random design variables. The boundaries are constructed using a support vector machine that provides a way to efficiently evaluate probabilities of failure and solve the reliability-based design optimization problem. Another major advantage of the approach is that it efficiently manages the discontinuities that might appear during subcritical limit cycle oscillations. The proposed approach is applied to the construction of flutter and subcritical limit cycle oscillation boundaries for a two-degree-of-freedom airfoil with nonlinear stiffnesses. The solution of a reliability-based design optimization problem with a constraint on the probability of subcritical limit cycle oscillation is also provided. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL optimization KW - AEROELASTICITY KW - AERODYNAMICS KW - NONLINEAR models (Statistics) KW - PROBABILITY theory KW - RELIABILITY (Engineering) KW - NONLINEAR oscillations KW - AERONAUTICS N1 - Accession Number: 52330883; Source Information: May/Jun2010, Vol. 47 Issue 3, p992; Subject Term: MATHEMATICAL optimization; Subject Term: AEROELASTICITY; Subject Term: AERODYNAMICS; Subject Term: NONLINEAR models (Statistics); Subject Term: PROBABILITY theory; Subject Term: RELIABILITY (Engineering); Subject Term: NONLINEAR oscillations; Subject Term: AERONAUTICS; Subject Term: ; Number of Pages: 7p; ; Illustrations: 5 Graphs; ; Document Type: Article; L3 - 10.2514/1.46665 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=52330883&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Powell, Matthew AU - Bailey, Justin AU - Maggio, Lauren A. T1 - Q / How should you manage children born to hepatitis C-positive women? JO - Journal of Family Practice JF - Journal of Family Practice Y1 - 2010/05// VL - 59 IS - 5 M3 - Article SP - 289 EP - 290 PB - Frontline Medical Communications SN - 00943509 AB - The article presents a challenge on management and caring of children which are born by hepatitis C-positive women. It focuses on vital facts on strength of recommendation (SOR) in dealing with babies in regards to hepatitis C virus (HCV) and human immunodeficiency virus (HIV) transmission. It presents the implications of viral transmission of HCV and HIV in the normal and cesarean delivery with its retrospective analysis, and the issues due internal monitoring and postpartum lab testing. KW - HEPATITIS C KW - RESEARCH -- Methodology KW - HEPATITIS C -- Transmission KW - CESAREAN section -- Complications -- Prevention KW - RETROSPECTIVE studies KW - CASE-control method N1 - Accession Number: 51360982; Powell, Matthew 1; Bailey, Justin 1; Maggio, Lauren A. 2; Source Information: May2010, Vol. 59 Issue 5, p289; Subject: HEPATITIS C; Subject: RESEARCH -- Methodology; Subject: HEPATITIS C -- Transmission; Subject: CESAREAN section -- Complications -- Prevention; Subject: RETROSPECTIVE studies; Subject: CASE-control method; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=51360982&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 105203450 T1 - Standard and transmission-based precautions: an update for dentistry. AU - Harte JA Y1 - 2010/05// N1 - Accession Number: 105203450. Language: English. Entry Date: 20100702. Revision Date: 20150711. Publication Type: Journal Article; consumer/patient teaching materials; review. Journal Subset: Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Dental Care. NLM UID: 7503060. KW - Cross Infection -- Prevention and Control KW - Protective Clothing -- Utilization KW - Protective Devices -- Utilization KW - Universal Precautions KW - Centers for Disease Control and Prevention (U.S.) -- Standards KW - Communicable Diseases KW - Physical Therapy KW - Posters SP - 572 EP - 581 JO - Journal of the American Dental Association (JADA) JF - Journal of the American Dental Association (JADA) JA - J AM DENT ASSOC VL - 141 IS - 5 CY - Chicago, Illinois PB - American Dental Association AB - BACKGROUND: Standard Precautions are the foundation of all infection control programs and include infection control practices that apply to all patients and situations regardless of whether the infection status is suspected, confirmed or unknown. METHODS: The author reviewed Standard Precautions, including two new elements introduced by the Centers for Disease Control and Prevention in 2007: safe injection practices and respiratory hygiene and cough etiquette. Standard Precautions sometimes are referred to as the first tier of precautions because for some diseases and circumstances, transmission cannot be interrupted completely with Standard Precautions alone and it is necessary to use second-tier Transmission-Based Precautions. The author reviewed the three categories of Transmission-Based Precautions--Airborne, Droplet and Contact--with an emphasis on their use in dental health care outpatient settings. CONCLUSIONS AND CLINICAL IMPLICATIONS: Dental health care personnel (DHCP) should update their infection control programs to ensure that safe injection practices and respiratory hygiene and cough etiquette measures are used routinely. In addition, with the emergence of new pathogens, re-emergence of variant organisms and more patients seeking care in ambulatory care facilities, DHCP need to be aware of additional measures to take when treating patients in their offices who are actively infected with certain organisms to protect fully other patients, their staff members and themselves. SN - 0002-8177 AD - U.S. Air Force Dental Corps, United States Air Force Dental Evaluation and Consultation Service, Great Lakes, IL 60088; jennifer.harte@us.af.mil U2 - PMID: 20436107. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105203450&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 105096052 T1 - Prenatal spousal military deployment and maternal prenatal adaptation as predictors of postpartum maternal-infant attachment. AU - Weis K AU - Lederman RP Y1 - 2010/05// N1 - Accession Number: 105096052. Language: English. Entry Date: 20101022. Revision Date: 20150820. Publication Type: Journal Article; research; tables/charts. Journal Subset: Blind Peer Reviewed; Expert Peer Reviewed; Nursing; Peer Reviewed; USA. Special Interest: Obstetric Care; Pediatric Care. Instrumentation: Prenatal Self-Evaluation Questionnaire (PSEQ); Edinburgh Postnatal Depression Scale (EPDS); Postpartum Self-Evaluation Questionnaire (PPSEQ). Grant Information: TriService Nursing Research Program, MDA-905-00-1-0039.. NLM UID: 101135885. KW - Adaptation, Psychological KW - Anxiety -- In Pregnancy KW - Depression -- In Pregnancy KW - Depression, Postpartum KW - Military Deployment -- Psychosocial Factors KW - Mother-Infant Relations KW - Parent-Infant Bonding KW - Spouses KW - Adolescence KW - Coefficient Alpha KW - Conceptual Framework KW - Data Analysis Software KW - Demography KW - Descriptive Statistics KW - Edinburgh Postnatal Depression Scale KW - Female KW - Funding Source KW - Human KW - Maternal Role KW - Personal Satisfaction KW - Postnatal Period KW - Pregnancy KW - Prospective Studies KW - Psychological Tests KW - Questionnaires KW - Sampling Methods KW - Scales KW - Summated Rating Scaling KW - Time Factors SP - 7p EP - 7p JO - Southern Online Journal of Nursing Research JF - Southern Online Journal of Nursing Research JA - SOUTH ONLINE J NURS RES VL - 10 IS - 3 CY - Tuscaloosa, Alabama PB - Southern Nursing Research Society AB - A woman's ability to adapt and identify with the concept of being a mother is a process that occurs progressively throughout pregnancy and is predictive of postpartum adaptation and infant health outcomes. Integral to this adaptive process is the esteem-enhancing support from a partner or husband. Less is known about the impact of military deployment and the absence of the husband on the pregnant woman's level of anxiety and its impact on postpartum maternal-infant attachment. The effect of spousal deployment during pregnancy on prenatal anxiety and adaptation to a 6-month measure of maternal-infant attachment was the focus of this study. The sample comprised 113 pregnant women eligible for care in the military medical system. Significant predictors of postpartum maternal-infant attachment and satisfaction with maternal role and infant care were: Prenatal deployment of one's spouse, specific prenatal measures of anxiety and depression, and the pregnant woman's relationship with her spouse. The findings indicate the unique and important support provided by the spouse. Most particularly the findings show the impact of prenatal partner/spousal separation secondary to military deployment on postpartum maternal adaptation and maternal-infant attachment. SN - 1538-0696 AD - Dean, United States Air Force School of Aerospace Medicine, Brooks City-Base, TX 78235; karen.weis@brooks.af.mil UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105096052&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Drape, Thomas G. AU - Quintanilla, Javier AU - Green, Steve G. T1 - Individual pay for performance in Spain: Cognitive sociology and the subsidiary insider perspective. JO - Thunderbird International Business Review JF - Thunderbird International Business Review Y1 - 2010/05//May/Jun2010 VL - 52 IS - 3 M3 - Article SP - 217 EP - 230 SN - 10964762 AB - This article examines how individual pay for performance is interpreted, predominantly by nonmanagerial employees, within the European context, at three subsidiaries of one U.S. multinational corporation in Spain. The study reveals how two levels of the cognitive socialization process color the lens through which employees view pay for performance and reveals how subsidiary founding, politics of resistance, and host-country effects impact the implementation of the practice. Contrary to past studies in the literature, the study discovered a large number of nonmanagerial employees with a positive interpretation of pay for performance due to the influence of pre-existing organizational cultural experiences. © 2010 Wiley Periodicals, Inc. [ABSTRACT FROM AUTHOR] AB - Copyright of Thunderbird International Business Review is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERNATIONAL business enterprises KW - SUBSIDIARY corporations KW - PERSONNEL management KW - INTERNATIONAL economic relations KW - MANAGEMENT literature KW - BUSINESS literature KW - SOCIALIZATION KW - METHODOLOGY KW - SPAIN N1 - Accession Number: 49388802; Drape, Thomas G. 1; Email Address: Thomas.Drape@marshallcenter.org; Quintanilla, Javier 2; Green, Steve G. 3; Affiliations: 1: Associate Professor and United States Air Force Academy Chair, George C. Marshall European Center for Security Studies, Garmisch-Partenkirchen, Germany; 2: Professor, IESE Business School, University of Navarra, Spain; 3: Professor, Management, United States Air Force Academy, Colorado; Issue Info: May/Jun2010, Vol. 52 Issue 3, p217; Thesaurus Term: INTERNATIONAL business enterprises; Thesaurus Term: SUBSIDIARY corporations; Thesaurus Term: PERSONNEL management; Thesaurus Term: INTERNATIONAL economic relations; Thesaurus Term: MANAGEMENT literature; Thesaurus Term: BUSINESS literature; Subject Term: SOCIALIZATION; Subject Term: METHODOLOGY; Subject: SPAIN; NAICS/Industry Codes: 911420 International assistance; NAICS/Industry Codes: 923130 Administration of Human Resource Programs (except Education, Public Health, and Veterans' Affairs Programs); NAICS/Industry Codes: 541612 Human Resources Consulting Services; NAICS/Industry Codes: 551114 Corporate, Subsidiary, and Regional Managing Offices; Number of Pages: 14p; Illustrations: 1 Diagram, 4 Charts; Document Type: Article L3 - 10.1002/tie.20326 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=49388802&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 2010-05491-001 AN - 2010-05491-001 AU - Helton, William S. AU - Warm, Joel S. AU - Tripp, Lloyd D. AU - Matthews, Gerald AU - Parasuraman, Raja AU - Hancock, Peter A. T1 - Cerebral lateralization of vigilance: A function of task difficulty. JF - Neuropsychologia JO - Neuropsychologia JA - Neuropsychologia Y1 - 2010/05// VL - 48 IS - 6 SP - 1683 EP - 1688 CY - Netherlands PB - Elsevier Science SN - 0028-3932 AD - Helton, William S., Department of Psychology, University of Canterbury, Private Bag 4800, Christchurch, New Zealand N1 - Accession Number: 2010-05491-001. PMID: 20171235 Partial author list: First Author & Affiliation: Helton, William S.; Department of Psychology, University of Canterbury, Christchurch, New Zealand. Release Date: 20100322. Correction Date: 20131014. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Hancock, P.A. Major Descriptor: Lateral Dominance; Sustained Attention; Task Complexity; Vigilance; Spectroscopy. Classification: Neuropsychology & Neurology (2520). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: Edinburgh Handedness Inventory DOI: 10.1037/t23111-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 6. Issue Publication Date: May, 2010. Publication History: First Posted Date: Feb 18, 2010; Accepted Date: Feb 12, 2010; Revised Date: Feb 10, 2010; First Submitted Date: Jul 6, 2009. Copyright Statement: All rights reserved. Elsevier Ltd. 2010. AB - Functional near infrared spectroscopy (fNIRS) measures of cerebral oxygenation levels were collected from participants performing difficult and easy versions of a 12 min vigilance task and for controls who merely watched the displays without a work imperative. For the active participants, the fNIRS measurements in both vigilance tasks showed higher levels of cerebral activity than was present in the case of the no-work controls. In the easier task, greater activation was found in the right than in the left cerebral hemisphere, matching previous results indicating right hemisphere dominance for vigilance. However, for the more difficult task, this laterality difference was not found, instead activation was bilateral. Unilateral hemispheric activation in vigilance may be a result of employing relatively easy/simple tasks, not vigilance per se. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cerebral lateralization KW - vigilance KW - task difficulty KW - functional near infrared spectroscopy KW - sustained attention KW - 2010 KW - Lateral Dominance KW - Sustained Attention KW - Task Complexity KW - Vigilance KW - Spectroscopy KW - 2010 U1 - Sponsor: US Army Research Institute, Department of Defense Multidisciplinary Research Initiative (MURI), US. Grant: 3 DAAD 190-01-1-062. Recipients: Hancock, P.A. (Prin Inv) U1 - Sponsor: US Air Force Office of Scientific Research, Department of Defense University Research Instrumentation Program (DURIP), US. Grant: FA-9550-07-1-0500. Other Details: Department of Defense University Research Instrumentation Program (DURIP). Recipients: Warm, Joel S. DO - 10.1016/j.neuropsychologia.2010.02.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-05491-001&site=ehost-live&scope=site UR - wshelton@mtu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Román, Miguel O. AU - Schaaf, Crystal B. AU - Lewis, Philip AU - Gao, Feng AU - Anderson, Gail P. AU - Privette, Jeffrey L. AU - Strahler, Alan H. AU - Woodcock, Curtis E. AU - Barnsley, Michael T1 - Assessing the coupling between surface albedo derived from MODIS and the fraction of diffuse skylight over spatially-characterized landscapes JO - Remote Sensing of Environment JF - Remote Sensing of Environment Y1 - 2010/04/15/ VL - 114 IS - 4 M3 - Article SP - 738 EP - 760 SN - 00344257 AB - Abstract: In this effort, the MODerate Resolution Imaging Spectroradiometer (MODIS) (Collection V005) Bidirectional Reflectance Distribution Function (BRDF)/Albedo algorithm is used to retrieve instantaneous surface albedo at a point in time and under specific atmospheric conditions. These retrievals are then used to study the role that the fraction of diffuse skylight plays under realistic scenarios of anisotropic diffuse illumination and multiple scattering between the surface and atmosphere. Simulations of the sky radiance using the MODTRAN®5.1 radiative transfer model were performed under different aerosol optical properties, illumination conditions, and surface characteristics to describe these effects on surface albedo retrievals from MODIS. This technique was examined using a validation scheme over four measurement sites with varied aerosol levels and landscapes, ranging from croplands to tundra ecosystems, and over extended time periods. Furthermore, a series of geostatistical analyses were performed to examine the types of spatial patterns observed at each measurement site. In particular, Enhanced Thematic Mapper Plus (ETM+) retrievals of surface albedo were acquired to analyze the change in variogram model parameters as a function of increased window-size. Results were then used to assess the degree to which a given point measurement is able to capture the intrinsic variability at the scale of MODIS observations. Assessments of MODIS instantaneous albedos that account for anisotropic multiple scattering, over snow-free and snow-covered lands and at all diurnal solar zenith angles, show a slight improvement over the albedo formulations that treat the downwelling diffuse radiation as isotropic. Comparisons with field measurements show biases improving by 0.004–0.013 absolute units (root-mean-squared error) or 0.1%–2.0% relative error. [Copyright &y& Elsevier] AB - Copyright of Remote Sensing of Environment is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Albedo KW - Landscapes KW - Atmospheric radiation KW - Simulation methods & models KW - Remote sensing KW - MODIS (Spectroradiometer) KW - Spectral reflectance KW - Distribution (Probability theory) KW - Algorithms KW - Geological statistics KW - ARM-SGP Central Facility KW - BRDF KW - EOS land validation core sites KW - MODIS KW - MODTRAN KW - NSA-Barrow KW - SAFARI 2000 Project KW - Spatial analysis KW - Surface albedo KW - Validation N1 - Accession Number: 47826641; Román, Miguel O. 1,2; Email Address: Miguel.O.Roman@nasa.gov; Schaaf, Crystal B. 1; Lewis, Philip 3; Gao, Feng 2,4; Anderson, Gail P. 5,6; Privette, Jeffrey L. 7; Strahler, Alan H. 1; Woodcock, Curtis E. 1; Barnsley, Michael 8; Affiliations: 1: Department of Geography and Environment, Boston University, Boston, MA, USA; 2: Hydrospheric and Biospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA; 3: Department of Geography, University College London, London, UK; 4: Earth Resources Technology, Inc., Annapolis Junction, MD, USA; 5: Global Monitoring Division, Earth System Research Laboratory, NOAA, Boulder, CO, USA; 6: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, MA, USA; 7: NOAA National Climatic Data Center, Asheville, NC, USA; 8: Department of Geography, University of Wales Swansea, Swansea, UK; Issue Info: Apr2010, Vol. 114 Issue 4, p738; Thesaurus Term: Albedo; Thesaurus Term: Landscapes; Thesaurus Term: Atmospheric radiation; Thesaurus Term: Simulation methods & models; Thesaurus Term: Remote sensing; Subject Term: MODIS (Spectroradiometer); Subject Term: Spectral reflectance; Subject Term: Distribution (Probability theory); Subject Term: Algorithms; Subject Term: Geological statistics; Author-Supplied Keyword: ARM-SGP Central Facility; Author-Supplied Keyword: BRDF; Author-Supplied Keyword: EOS land validation core sites; Author-Supplied Keyword: MODIS; Author-Supplied Keyword: MODTRAN; Author-Supplied Keyword: NSA-Barrow; Author-Supplied Keyword: SAFARI 2000 Project; Author-Supplied Keyword: Spatial analysis; Author-Supplied Keyword: Surface albedo; Author-Supplied Keyword: Validation; Number of Pages: 23p; Document Type: Article L3 - 10.1016/j.rse.2009.11.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=47826641&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Williams, Christopher S. AU - Baker, William P. AU - Burggraf, Larry W. AU - Adamson, Paul E. AU - Petrosky, James C. T1 - Toward Simultaneous 2D ACAR and 2D DBAR: Sub-Pixel Spatial Characterization of a Segmented HPGe Detector Using Transient Charges. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2010/04/02/Apr2010 Part 2 of 2 VL - 57 IS - 2 M3 - Article SP - 860 EP - 869 SN - 00189499 AB - Sub-pixel spatial characterization of an Ortec HPGe double-sided strip detector was measured in preparation for its planned use in a positron annihilation spectrometer (PAS) to simultaneously measure the two-dimensional Angular Correlation (2D ACAR) and Doppler Broadening (2D DBAR) of Annihilation Radiation. Sr-85 514-keV photons were finely collimated onto the center of 25, equally spaced sub-pixels within a single 5-mm by 5-mm intrinsic pixel, using a collimator with an aperture diameter of 0.15 ± 0.05. The location of each full-energy recorded event was determined by analyzing the relative sizes of coincident transient charges on charge collection strips adjacent to the strip recording full-energy events. Interpolation, using ratios of the coincident transient charge sizes, was used to determine two-dimensional locations of full-energy events. Radial location data was fit to a function which describes a Gaussian point spread function uniformly distributed over a circular aperture. The standard deviation of the point spread function, 0.22 mm, is a measure of the spatial resolution of this detector system. The relative efficiency for detection of 514-keV photons across the intrinsic pixel was also measured. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Nuclear reactions KW - Annihilation reactions KW - Standard deviations KW - Positron annihilation KW - Angular correlations (Nuclear physics) KW - Photons KW - Image charge KW - segmented germanium KW - spatial resolution KW - transient charge N1 - Accession Number: 49533476; Williams, Christopher S. 1; Email Address: cwilliam@afit.edu; Baker, William P. 2; Email Address: william.baker@afit.edu; Burggraf, Larry W. 3; Email Address: larry.burggraf@afit.edu; Adamson, Paul E. 4,5; Email Address: paul.adamson@kirtland.af.mil; Petrosky, James C. 6; Email Address: james.petrosky@afit.edu; Affiliations: 1: Air Force Institute of Technology,Wright-Patterson AFB, OH 45433 USA; 2: Mathematics, Air Force Institute of Technology,Wright- Patterson AFB, OH 45433 USA; 3: Chemical Physics and Engineering Physics, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433 USA; 4: High Power Microwave (HPM) Technologies Branch, HPM Division, Kirtland AFB, NM 87117 USA; 5: Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117 USA; 6: Nuclear Engineering, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433 USA; Issue Info: Apr2010 Part 2 of 2, Vol. 57 Issue 2, p860; Thesaurus Term: Nuclear reactions; Subject Term: Annihilation reactions; Subject Term: Standard deviations; Subject Term: Positron annihilation; Subject Term: Angular correlations (Nuclear physics); Subject Term: Photons; Author-Supplied Keyword: Image charge; Author-Supplied Keyword: segmented germanium; Author-Supplied Keyword: spatial resolution; Author-Supplied Keyword: transient charge; Number of Pages: 10p; Illustrations: 3 Diagrams, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1109/TNS.2010.2040194 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=49533476&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Morgan, Oliver W. AU - Parks, Sharyn AU - Shim, Trudi AU - Blevins, Patricia A. AU - Lucas, Pauline M. AU - Sanchez, Roger AU - Walea, Nancy AU - Loustalot, Fleetwood AU - Duffy, Mark R. AU - Shim, Matthew J. AU - Guerra, Sandra AU - Guerra, Fernando AU - Mills, Gwen AU - Verani, Jennifer AU - Alsip, Bryan AU - Lindstrom, Stephen AU - Shu, Bo AU - Emery, Shannon AU - Cohen, Adam L. AU - Menon, Manoj T1 - Household Transmission of Pandemic (H1N1) 2009, San Antonio, Texas, USA, April-May 2009. JO - Emerging Infectious Diseases JF - Emerging Infectious Diseases Y1 - 2010/04// VL - 16 IS - 4 M3 - Article SP - 631 EP - 637 PB - Centers for Disease Control & Prevention (CDC) SN - 10806040 AB - To assess household transmission of pandemic (H1N1) 2009 in San Antonio, Texas, USA, during April 15-May 8, 2009, we investigated 77 households. The index case-patient was defined as the household member with the earliest onset date of symptoms of acute respiratory infection (ARI), infl uenza-like illness (ILI), or laboratory-confirmed pandemic (H1N1) 2009. Median interval between illness onset in index and secondary case-patients was 4 days (range 1-9 days); the index case-patient was likely to be <18 years of age (p = 0.034). The secondary attack rate was 4% for pandemic (H1N1) 2009, 9% for ILI, and 13% for ARI. The secondary attack rate was highest for children <5 years of age (8%-19%) and lowest for adults >50 years of age (4%-12%). Early in the outbreak, household transmission primarily occurred from children to other household members and was lower than the transmission rate for seasonal influenza. [ABSTRACT FROM AUTHOR] AB - Copyright of Emerging Infectious Diseases is the property of Centers for Disease Control & Prevention (CDC) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Pandemics KW - Influenza A virus, H1N1 subtype KW - Influenza A virus KW - Swine influenza KW - San Antonio (Tex.) KW - Texas N1 - Accession Number: 49259921; Morgan, Oliver W. 1; Email Address: omorgan@cdc.gov; Parks, Sharyn 1,2; Shim, Trudi 2; Blevins, Patricia A. 3; Lucas, Pauline M. 4; Sanchez, Roger 3; Walea, Nancy 2; Loustalot, Fleetwood 1; Duffy, Mark R. 4; Shim, Matthew J. 4; Guerra, Sandra 2; Guerra, Fernando 3; Mills, Gwen 5; Verani, Jennifer 1; Alsip, Bryan 3; Lindstrom, Stephen 1; Shu, Bo 1; Emery, Shannon 1; Cohen, Adam L. 1; Menon, Manoj 1; Affiliations: 1: Centers for Disease Control and Prevention, Atlanta, Georgia, USA; 2: Department of State Health Services, Austin, Texas, USA; 3: San Antonio Metropolitan Health District, San Antonio, Texas, USA; 4: United States Air Force School of Aerospace Medicine, Brooks City-Base, Texas, USA; 5: Comal County Health Department, New Braunfels, Texas, USA; Issue Info: Apr2010, Vol. 16 Issue 4, p631; Thesaurus Term: Pandemics; Subject Term: Influenza A virus, H1N1 subtype; Subject Term: Influenza A virus; Subject Term: Swine influenza; Subject: San Antonio (Tex.); Subject: Texas; Number of Pages: 7p; Illustrations: 3 Charts, 1 Map; Document Type: Article L3 - 10.3201/eid1604.091658 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=49259921&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - QILIAN LIANG AU - XIUZHEN CHENG AU - SAMN, SHERWOOD W. T1 - NEW: Network-Enabled Electronic Warfare for Target Recognition. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2010/04// VL - 46 IS - 2 M3 - Article SP - 558 EP - 568 SN - 00189251 AB - Network-enabled electronic warfare (NEW) is the development of modeling and simulation efforts that explore the advantages and limitations of NEW concepts. The advantages of linking multiple electronic support measures (ESM) and electronic attack (EA) assets to achieve improved capabilities across a networked battle force have yet to be quantified. In this paper, we utilize radar sensors as ESM and EA assets to demonstrate the advantages of NEW in collaborative automatic target recognition (CATR). Signal (waveform) design for radar sensor networks (RSN) in NEW is studied theoretically. The conditions for waveform coexistence and the interferences among waveforms in RSN are analyzed. We apply the NEW to CATR via waveform diversity combining and propose maximum-likelihood (ML)-ATR algorithms for nonfluctuating targets as well as fluctuating targets. Simulation results indicate that our NEW-CATR performs much better than the single sensor-based ATR algorithm for nonfluctuating and fluctuating targets. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY electronics KW - TARGET acquisition KW - RADAR targets KW - DETECTORS KW - SENSOR networks N1 - Accession Number: 50544679; QILIAN LIANG 1; Email Address: liang@uta.edu; XIUZHEN CHENG 2; SAMN, SHERWOOD W. 3; Affiliations: 1: University of Texas at Arlington; 2: George Washington University; 3: Air Force Research Laboratory; Issue Info: Apr2010, Vol. 46 Issue 2, p558; Subject Term: MILITARY electronics; Subject Term: TARGET acquisition; Subject Term: RADAR targets; Subject Term: DETECTORS; Subject Term: SENSOR networks; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=50544679&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Wroblewski, Donald E. AU - Coté, Owen R. AU - Hacker, Jorg M. AU - Dobosy, Ronald J. T1 - Velocity and Temperature Structure Functions in the Upper Troposphere and Lower Stratosphere from High-Resolution Aircraft Measurements. JO - Journal of the Atmospheric Sciences JF - Journal of the Atmospheric Sciences Y1 - 2010/04// VL - 67 IS - 4 M3 - Article SP - 1157 EP - 1170 PB - American Meteorological Society SN - 00224928 AB - High-resolution measurements obtained from NOAA “best” atmospheric turbulence (BAT) probes mounted on an EGRETT high-altitude research aircraft were used to characterize turbulence in the upper troposphere and lower stratosphere at scales from 2 m to 20 km, focusing on three-dimensional behavior in the sub-kilometer-scale range. Data were analyzed for 129 separate level flight segments representing 41 h of flight time and 12 600 km of wind-relative flight distances. The majority of flights occurred near the tropopause layer of the winter subtropical jet stream in the Southern Hemisphere. Second-order structure functions for velocity and temperature were analyzed for the separate level-flight segments, individually and in various ensembles. A 3D scaling range was observed at scales less than about 100 m, with power-law exponents for the structure functions of the velocity component in the flight direction varying mostly between 0.4 and 0.75 for the separate flight segments, but close to 2/3 for the ensemble-averaged curves for all levels and for various subensembles. Structure functions in the 3D scaling range were decoupled from those at scales greater than 10 km, with the large-scale structure functions showing less variation than those at smaller scales. Weakly anisotropic behavior was observed in the 3D range, with structure parameters for the lateral and vertical velocities on the same order as those in the flight direction but deviating from the expected isotropic value. Anisotropy was correlated with turbulence intensity, with greater anisotropy associated with weaker turbulence. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Atmospheric Sciences is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Temperature KW - Troposphere KW - Atmospheric turbulence KW - Anisotropy KW - Speed KW - Aircraft observations KW - Stratosphere KW - Upper troposphere KW - Wind N1 - Accession Number: 52009532; Wroblewski, Donald E. 1; Email Address: dew11@bu.edu; Coté, Owen R. 2; Hacker, Jorg M. 3; Dobosy, Ronald J. 4; Affiliations: 1: Mechanical Engineering Department, Boston University, Boston, Massachusetts; 2: Air Force Research Laboratory, Hanscom AFB, Bedford, Massachusetts; 3: Flinders University, Adelaide, South Australia, Australia; 4: NOAA/ARL, Oak Ridge, Tennessee; Issue Info: Apr2010, Vol. 67 Issue 4, p1157; Thesaurus Term: Temperature; Thesaurus Term: Troposphere; Thesaurus Term: Atmospheric turbulence; Thesaurus Term: Anisotropy; Subject Term: Speed; Author-Supplied Keyword: Aircraft observations; Author-Supplied Keyword: Stratosphere; Author-Supplied Keyword: Upper troposphere; Author-Supplied Keyword: Wind; Number of Pages: 14p; Illustrations: 2 Charts, 12 Graphs; Document Type: Article L3 - 10.1175/2009JAS3108.1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=52009532&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Roy, Sukesh AU - Gord, James R. AU - Patnaik, Anil K. T1 - Recent advances in coherent anti-Stokes Raman scattering spectroscopy: Fundamental developments and applications in reacting flows JO - Progress in Energy & Combustion Science JF - Progress in Energy & Combustion Science Y1 - 2010/04// VL - 36 IS - 2 M3 - Article SP - 280 EP - 306 SN - 03601285 AB - Abstract: Coherent anti-Stokes Raman scattering (CARS) spectroscopy is widely used for measuring temperature and species concentration in reacting flows. This paper reviews the advances made over the last twelve years in the development and application of CARS spectroscopy in gas-phase reacting flows. The advent of high-power nanosecond (ns) lasers and off-the-shelf compact picosecond (ps) and femtosecond (fs) lasers is enabling the rapid expansion of the application of single-shot or high-bandwidth CARS spectroscopy in a way that would have been quite unimaginable two decades ago. Furthermore, compact ps lasers are paving the way for the development of a fiber-based CARS system for use in harsh environments. The objective of this paper is to provide an overview of recent progresses in ns-, ps-, and fs-CARS spectroscopy for gas-phase thermometry and species-concentration measurements since the second edition of A.C. Eckbreth''s book entitled Laser Diagnostics for Combustion Temperature and Species, which was published in 1996. During the last two decades, four encompassing issues have driven the fundamental development and application of CARS spectroscopy in reacting flows: 1) measurement of temperature and concentration of multiple species with one CARS system, 2) extension of the application of traditional ns-CARS to challenging reacting flow environments, 3) performance of nonresonant background-free and collision-free measurements in high-pressure reacting flows, and 4) measurement of temperature and species concentration at high bandwidth, typically 1kHz or greater, to address the instability and transient phenomena associated with turbulent reacting flows in the combustors and augmentors of modern propulsion systems. This review is focused on identifying and discussing the recent results of gas-phase CARS spectroscopy related to the four issues mentioned above. The feasibility of performing high-bandwidth CARS spectroscopy with one laser beam as well as the potential of tailored fs lasers for thermometry and species-concentration measurements in gas-phase reacting flows are also discussed. [Copyright &y& Elsevier] AB - Copyright of Progress in Energy & Combustion Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Raman effect KW - Raman spectroscopy KW - Fluid dynamics KW - Femtosecond lasers KW - Temperature measurements KW - Laser beams KW - Time-resolved spectroscopy KW - Turbulence KW - Coherent anti-Stokes Raman scattering KW - Laser diagnostics KW - Reacting flows KW - Single-shot spectroscopy KW - Species concentration KW - Thermometry KW - Ultrafast spectroscopy N1 - Accession Number: 47954949; Roy, Sukesh 1; Email Address: sroy@woh.rr.com; Gord, James R. 2; Patnaik, Anil K. 2,3; Affiliations: 1: Spectral Energies, LLC, 5100 Springfield Street, Ste. 301, Dayton, OH 45431, United States; 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, United States; 3: Department of Physics, Wright State University, Dayton, OH 45435, United States; Issue Info: Apr2010, Vol. 36 Issue 2, p280; Subject Term: Raman effect; Subject Term: Raman spectroscopy; Subject Term: Fluid dynamics; Subject Term: Femtosecond lasers; Subject Term: Temperature measurements; Subject Term: Laser beams; Subject Term: Time-resolved spectroscopy; Subject Term: Turbulence; Author-Supplied Keyword: Coherent anti-Stokes Raman scattering; Author-Supplied Keyword: Laser diagnostics; Author-Supplied Keyword: Reacting flows; Author-Supplied Keyword: Single-shot spectroscopy; Author-Supplied Keyword: Species concentration; Author-Supplied Keyword: Thermometry; Author-Supplied Keyword: Ultrafast spectroscopy; Number of Pages: 27p; Document Type: Article L3 - 10.1016/j.pecs.2009.11.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=47954949&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2010-07725-001 AN - 2010-07725-001 AU - Todd, James T. AU - Christensen, James C. AU - Guckes, Kevin M. T1 - 'Are discrimination thresholds a valid measure of variance for judgments of slant from texture?': Correction. JF - Journal of Vision JO - Journal of Vision JA - J Vis Y1 - 2010/03/31/ VL - 10 IS - 3 CY - US PB - Assn for Research in Vision & Ophthalmology (ARVO) SN - 1534-7362 N1 - Accession Number: 2010-07725-001. Partial author list: First Author & Affiliation: Todd, James T.; Department of Psychology, Ohio State University, Columbus, OH, US. Release Date: 20100517. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Erratum/Correction. Language: English. Major Descriptor: Depth Perception; Form and Shape Perception; Perceptual Discrimination; Texture Perception; Visual Perception. Minor Descriptor: Observers; Thresholds. Classification: Visual Perception (2323). Population: Human (10). ArtID: 22. Issue Publication Date: Mar 31, 2010. AB - Reports an error in 'Are discrimination thresholds a valid measure of variance for judgments of slant from texture' by James T. Todd, James T. Christensen and Kevin C. Guckes (Journal of Vision, 2010[Feb][23], Vol 10[2][20]). The author initials for Christensen and Guckes are incorrect. They should read Christensen, J. C., and Guckes, K. M. The original html and pdf versions have been corrected. (The following abstract of the original article appeared in record [rid]2010-04381-001[/rid]). There have been many experiments reported in the literature that have employed discrimination procedures to estimate the variance of observers' slant judgments from texture and binocular disparity, both individually and in combination. The research described in the present article identifies two serious methodological flaws in these studies. Although discrimination thresholds can be influenced by the variance of observers' slant estimates, they can also be affected by systematic biases in observers' judgments, and the presence of 2D cues that are irrelevant to the perception of slant. A series of five experiments is reported to show that: (1) the slants of surfaces specified by texture gradients can be systematically underestimated; (2) surfaces specified by texture gradients appear significantly less slanted than equivalent surfaces specified by binocular disparity; (3) the difference in bias between observers' slant judgments from stereo and texture may be more important than their relative variance in determining how these cues are weighted when presented in combination; (4) observers may be less sensitive to variations in apparent slant from texture than they are to variations in 2D cues that are unrelated to the perception of slant; and (5) these 2D cues may be the primary source of information for discriminating images of textured surfaces. These findings provide strong evidence that the results of prior discrimination studies have been misinterpreted because of the confounding effects of bias and/ or 2D cues, and that this has resulted in several questionable conclusions that have been broadly accepted within the field. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - discrimination thresholds KW - slant KW - depth KW - shape KW - judgments KW - texture KW - cue integration KW - observers KW - 2010 KW - Depth Perception KW - Form and Shape Perception KW - Perceptual Discrimination KW - Texture Perception KW - Visual Perception KW - Observers KW - Thresholds KW - 2010 DO - 10.1167/10.3.22 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-07725-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Lo Monte, Lorenzo AU - Erricolo, Danilo AU - Soldovieri, Francesco AU - Wicks, Michael C. T1 - Radio Frequency Tomography for Tunnel Detection. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2010/03/02/Mar2010 Part 2 of 2 VL - 48 IS - 3 M3 - Article SP - 1128 EP - 1137 SN - 01962892 AB - Radio frequency (RF) tomography is proposed to detect underground voids, such as tunnels or caches, over relatively wide areas of regard. The RF tomography approach requires a set of low-cost transmitters and receivers arbitrarily deployed on the surface of the ground or slightly buried. Using the principles of inverse scattering and diffraction tomography, a simplified theory for below-ground imaging is developed. In this paper, the principles and motivations in support of RF tomography are introduced. Furthermore, several inversion schemes based on arbitrarily deployed sensors are devised. Then, limitations to performance and system considerations are discussed. Finally, the effectiveness of RF tomography is demonstrated by presenting images reconstructed via the processing of synthetic data. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UNDERGROUND construction KW - RADIO frequency KW - TOMOGRAPHY KW - TUNNEL detection KW - GROUND penetrating radar KW - SIGNAL-to-noise ratio KW - Buried-object detection KW - ground-penetrating radar (GPR) KW - inverse scattering KW - radio frequency (RF) tomography KW - tunnel detection N1 - Accession Number: 51450557; Lo Monte, Lorenzo 1; Email Address: lorenzo.lomonte@gdit.com; Erricolo, Danilo 2; Email Address: erricolo@ece.uic.edu; Soldovieri, Francesco 3; Email Address: soldovieri.f@irea.cnr.it; Wicks, Michael C. 4; Email Address: michael.wicks@rl.af.mil; Affiliations: 1: General Dynamics Information Technology, Dayton, OH 45431 USA; 2: Department of Electrical and Computer Engineering, University of Illinois at Chicago, Chicago, IL 60607 USA; 3: Istituto per il Rilevamento Elettromagnetico dell Ambiente, Italian National Research Council (CNR), 80124 Naples, Italy; 4: Sensors Directorate, Radar Signal Processing Branch, U.S. Air Force Research Laboratory, Rome, NY 13441 USA; Issue Info: Mar2010 Part 2 of 2, Vol. 48 Issue 3, p1128; Thesaurus Term: UNDERGROUND construction; Subject Term: RADIO frequency; Subject Term: TOMOGRAPHY; Subject Term: TUNNEL detection; Subject Term: GROUND penetrating radar; Subject Term: SIGNAL-to-noise ratio; Author-Supplied Keyword: Buried-object detection; Author-Supplied Keyword: ground-penetrating radar (GPR); Author-Supplied Keyword: inverse scattering; Author-Supplied Keyword: radio frequency (RF) tomography; Author-Supplied Keyword: tunnel detection; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TGRS.2009.2029341 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=51450557&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Bellucci, Joseph P. AU - Smetek, Timothy E. AU - Bauer, Kenneth W. T1 - Improved Hyperspectral Image Processing Algorithm Testing Using Synthetic Imagery and Factorial Designed Experiments. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2010/03/02/Mar2010 Part 2 of 2 VL - 48 IS - 3 M3 - Article SP - 1211 EP - 1223 SN - 01962892 AB - The goal of a remote-sensing system is to gather data about the geography it is imaging. In order to gain knowledge of the Earth's landscape, analysts develop postprocessing algorithms to extract information from the collected data. The algorithms are designed for a variety of application areas such as the following: the classification of various ground covers in a scene, the identification of specific targets of interest, or the detection of anomalies in an image. Traditional algorithm testing uses sets of extensively ground-truthed test images. However, the lack of well-characterized test data sets, as well as the significant cost and time issues associated with assembling the data sets, contributes to the limitations of this approach. This paper uses a synthetic-image-generation model in cooperation with a factorialdesigned experiment to create a family of images with which to rigorously test the performance of hyperspectral algorithms. The factorial-designed experimental approach allowed the joint effects of the sensor's view angle, time of day, atmospheric visibility, and the size of the targets to be studied with respect to algorithm performance. A head-to-head performance comparison of the two tested spectral processing algorithms was also made. Finally, real images are processed using the algorithmic settings employed in the designed experiments to validate the approach. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - REMOTE sensing KW - GEOGRAPHY KW - IMAGING systems KW - DIGITAL image processing KW - Anomaly detection KW - blocked adaptive computationally efficient outlier nominator (BACON) detector KW - experimental design KW - image generation KW - nested factorial designs KW - remote sensing KW - RX detector KW - synthetic hyperspectral imaging N1 - Accession Number: 51450568; Bellucci, Joseph P. 1; Email Address: joseph.bellucci@langley.af.mil; Smetek, Timothy E. 2; Email Address: timothy.smetek@afit.edu; Bauer, Kenneth W. 2; Email Address: kenneth.bauer@afit.edu; Affiliations: 1: A9 Analyses, Lessons Learned and AFSO21 Directorate, Air Combat Command Headquarters, Langley AFB, VA 23665 USA; 2: Air Force Institute of Technology, Wright-Patterson AFB, OH 45433 USA; Issue Info: Mar2010 Part 2 of 2, Vol. 48 Issue 3, p1211; Thesaurus Term: ALGORITHMS; Subject Term: REMOTE sensing; Subject Term: GEOGRAPHY; Subject Term: IMAGING systems; Subject Term: DIGITAL image processing; Author-Supplied Keyword: Anomaly detection; Author-Supplied Keyword: blocked adaptive computationally efficient outlier nominator (BACON) detector; Author-Supplied Keyword: experimental design; Author-Supplied Keyword: image generation; Author-Supplied Keyword: nested factorial designs; Author-Supplied Keyword: remote sensing; Author-Supplied Keyword: RX detector; Author-Supplied Keyword: synthetic hyperspectral imaging; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1109/TGRS.2009.2029331 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=51450568&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Pomeroy, Steven A. T1 - Harnessing the Heavens: Nation Defense Through Space. JO - Air Power History JF - Air Power History J1 - Air Power History PY - 2010///Spring2010 Y1 - 2010///Spring2010 VL - 57 IS - 1 M3 - Book Review SP - 51 EP - 52 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book “Harnessing the Heavens: National Defense Through Space," Vol. 10, Military History Symposium Series of the United States Air Force Academy, edited by Paul G. Gillespie and Grant T. Weller. KW - HARNESSING the Heavens: National Defense Through Space (Book) KW - GILLESPIE, Paul G. KW - WELLER, Grant T. KW - MILITARY astronautics KW - NONFICTION N1 - Accession Number: 48443674; Source Information: Spring2010, Vol. 57 Issue 1, p51; Subject Term: HARNESSING the Heavens: National Defense Through Space (Book); Subject Term: GILLESPIE, Paul G.; Subject Term: WELLER, Grant T.; Subject Term: MILITARY astronautics; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=48443674&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Shimizu, T. AU - Abid, A.D. AU - Poskrebyshev, G. AU - Wang, H. AU - Nabity, J. AU - Engel, J. AU - Yu, J. AU - Wickham, D. AU - Van Devener, B. AU - Anderson, S.L. AU - Williams, S. T1 - Methane ignition catalyzed by in situ generated palladium nanoparticles JO - Combustion & Flame JF - Combustion & Flame Y1 - 2010/03// VL - 157 IS - 3 M3 - Article SP - 421 EP - 435 SN - 00102180 AB - Abstract: Catalytic ignition of methane over the surfaces of freely-suspended and in situ generated palladium nanoparticles was investigated experimentally and numerically. The experiments were conducted in a laminar flow reactor. The palladium precursor was a compound (Pd(THD)2, THD: 2,2,6,6-tetramethyl-3,5-heptanedione) dissolved in toluene and injected into the flow reactor as a fine aerosol, along with a methane–oxygen–nitrogen mixture. For experimental conditions chosen in this study, non-catalytic, homogeneous ignition was observed at a furnace temperature of ∼1123K, whereas ignition of the same mixture with the precursor was found to be ∼973K. In situ production of Pd/PdO nanoparticles was confirmed by scanning mobility, transmission electron microscopy and X-ray photoelectron spectroscopy analyses of particles collected at the reactor exit. The catalyst particle size distribution was log-normal. Depending on the precursor loading, the median diameter ranged from 10 to 30nm. The mechanism behind catalytic ignition was examined using a combined gas-phase and gas-surface reaction model. Simulation results match the experiments closely and suggest that palladium nanocatalyst significantly shortens the ignition delay times of methane–air mixtures over a wide range of conditions. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Combustion KW - Methane KW - Numerical analysis KW - Particle size distribution KW - Nanoparticles KW - Laminar flow KW - Chemical reactors KW - Palladium compounds KW - X-ray photoelectron spectroscopy KW - Catalytic combustion KW - Flow reactor KW - Gas-surface reaction KW - Ignition KW - Kinetic modeling KW - Microscopy N1 - Accession Number: 47611329; Shimizu, T. 1; Abid, A.D. 1; Poskrebyshev, G. 1; Wang, H. 1; Email Address: haiw@usc.edu; Nabity, J. 2; Engel, J. 2; Yu, J. 2; Wickham, D. 3; Van Devener, B. 4; Anderson, S.L. 4; Williams, S. 5; Affiliations: 1: Department of Aerospace and Mechanical Engineering, University of Southern California, Los Angeles, CA 90089, United States; 2: TDA Research, Inc., 12345 W. 52nd Ave, Wheat Ridge, CO 80033, United States; 3: Reaction Systems, LLC, 19039 E. Plaza Drive, Suite 290, Parker, CO 80134, United States; 4: Department of Chemistry, University of Utah, Salt Lake City, UT 84112, United States; 5: Air Force Research Laboratory, Mail Stop RZA, 1950 Fifth Street, WPAFB, OH 45433, United States; Issue Info: Mar2010, Vol. 157 Issue 3, p421; Thesaurus Term: Combustion; Thesaurus Term: Methane; Thesaurus Term: Numerical analysis; Thesaurus Term: Particle size distribution; Subject Term: Nanoparticles; Subject Term: Laminar flow; Subject Term: Chemical reactors; Subject Term: Palladium compounds; Subject Term: X-ray photoelectron spectroscopy; Author-Supplied Keyword: Catalytic combustion; Author-Supplied Keyword: Flow reactor; Author-Supplied Keyword: Gas-surface reaction; Author-Supplied Keyword: Ignition; Author-Supplied Keyword: Kinetic modeling; Author-Supplied Keyword: Microscopy; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.combustflame.2009.07.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=47611329&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 105125653 T1 - Haptic devices as a paradigm to enhance learning/function - theory and empirical studies. AU - Repperger DW AU - Phillips CA Y1 - 2010/03// N1 - Accession Number: 105125653. Language: English. Entry Date: 20100402. Revision Date: 20150818. Publication Type: Journal Article; equations & formulas; pictorial; tables/charts. Journal Subset: Allied Health; Blind Peer Reviewed; Double Blind Peer Reviewed; Editorial Board Reviewed; Europe; Expert Peer Reviewed; Peer Reviewed; UK & Ireland. Special Interest: Occupational Therapy; Physical Therapy. NLM UID: 101255937. KW - Assistive Technology Devices KW - Functional Status KW - Learning KW - Touch KW - Aviation KW - Brain Injuries -- Rehabilitation KW - Brain -- Physiology KW - Computer Simulation KW - Feedback KW - Rehabilitation -- Methods KW - Spasm -- Complications KW - Stroke -- Rehabilitation KW - Virtual Reality SP - 97 EP - 107 JO - Disability & Rehabilitation: Assistive Technology JF - Disability & Rehabilitation: Assistive Technology JA - DISABIL REHABIL ASSIST TECHNOL VL - 5 IS - 2 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - Haptics is a modern term employed to describe both afferent and efferent flows of forces with humans. The appropriate design of these force flow fields when coordinated with information to and from computers and other devices to physically challenged individuals can empower the performance of certain tasks previously not attainable. Extensive empirical work presented herein has demonstrated that proper augmentation of particular dynamic force fields, synchronised with certain cognitive tasks, can lead to improved functionality. More specifically, studies in spasticity, weaken responses and having delayed human response can benefit from these exposures to force fields applied suitably. From a theoretical perspective, the use of the well-known Fitts' law provides a unifying framework from which one can quantify the benefits derived from the proper exposure to force fields. Another area where haptics offers an exciting new platform to transfer information to and from humans includes subliminal haptics. This provides a paradigm to improve situational awareness and enhances control capability, where it may be missing previously. This article updates how haptics can be used in a variety of empirical settings to enhance learning, modulate human response to assist task completion, present a theoretical framework and improve the self-esteem of physically challenged individuals. SN - 1748-3107 AD - 711 Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio, USA U2 - PMID: 20184526. DO - 10.3109/17483100903387390 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105125653&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Engberson, Douglas H. T1 - Foreign Military Sales Shipments Through the European Union: It's Not Just a Ramstein Air Base Issue. JO - DISAM Journal of International Security Assistance Management JF - DISAM Journal of International Security Assistance Management J1 - DISAM Journal of International Security Assistance Management PY - 2010/03// Y1 - 2010/03// VL - 31 IS - 4 M3 - Article SP - 120 EP - 131 PB - Defense Institute of Security Assistance Management SN - 15320359 AB - The article reports on changes which have been seen since 2007 in the manner in which U.S. foreign military sales shipments to European Union countries which pass through Ramstein Air Base in Germany are managed. A discussion of taxation and tariff issues that are related to foreign military sales shipments is presented. KW - DEFENSE industries KW - MILITARY weapons -- Marketing KW - MILITARY supplies KW - AIR bases KW - EUROPEAN Union KW - UNITED States N1 - Accession Number: 50842122; Source Information: Mar2010, Vol. 31 Issue 4, p120; Subject Term: DEFENSE industries; Subject Term: MILITARY weapons -- Marketing; Subject Term: MILITARY supplies; Subject Term: AIR bases; Subject Term: EUROPEAN Union; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 12p; ; Illustrations: 3 Black and White Photographs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=50842122&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 105203564 T1 - What is the best treatment for a nonpoisonous spider bite? AU - Sarasua J AU - Bailey J Y1 - 2010/03//2010 Mar N1 - Accession Number: 105203564. Language: English. Entry Date: 20100618. Revision Date: 20150820. Publication Type: Journal Article; brief item; questions and answers. Note: For CE see page 15. Journal Subset: Biomedical; USA. Special Interest: Evidence-Based Practice. NLM UID: 100894030. KW - Bites and Stings -- Therapy KW - Spiders KW - Analgesics -- Therapeutic Use KW - Cold -- Therapeutic Use KW - Education, Continuing (Credit) KW - Histamine H1 Antagonists -- Therapeutic Use KW - Soaps -- Therapeutic Use KW - Water -- Therapeutic Use KW - Zinc Oxide -- Therapeutic Use SP - 4 EP - 4 JO - Evidence-Based Practice JF - Evidence-Based Practice JA - EVID BASED PRACT VL - 13 IS - 3 CY - East Windsor, New Jersey PB - S&P Global, Inc SN - 1095-4120 AD - David Grant United States Air Force Medical Center FMR, Travis Air Force Base, CA UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105203564&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Zhe Liang AU - Chaovalitwongse, Wanpracha Art AU - Rodriguez, Andrew D. AU - Jeffcoat, David E. AU - Grundel, Don A. AU - O'Neal, John K. T1 - Optimization of Spatiotemporal Clustering for Target Tracking From Multisensor Data. JO - IEEE Transactions on Systems, Man & Cybernetics: Part C - Applications & Reviews JF - IEEE Transactions on Systems, Man & Cybernetics: Part C - Applications & Reviews J1 - IEEE Transactions on Systems, Man & Cybernetics: Part C - Applications & Reviews PY - 2010/03// Y1 - 2010/03// VL - 40 IS - 2 M3 - Article SP - 176 EP - 188 SN - 10946977 AB - The article presents a study that aims to develop an enhanced target tracking system using data from wide-area search munitions (WASM). The study constructs a working model that utilizes network modeling and optimization techniques to accurately identify target points and reconstruct tracks. It conducts seven simulation tests using the model and compares the results to existing clustering techniques. It shows that the model has a 95 per cent accuracy in reconstructing real target tracks. KW - ARTIFICIAL satellite tracking KW - SIMULATION methods & models KW - MULTISENSOR data fusion KW - SENSOR networks KW - SIGNAL processing N1 - Accession Number: 48416573; Source Information: Mar2010, Vol. 40 Issue 2, p176; Subject Term: ARTIFICIAL satellite tracking; Subject Term: SIMULATION methods & models; Subject Term: MULTISENSOR data fusion; Subject Term: SENSOR networks; Subject Term: SIGNAL processing; Subject Term: ; Number of Pages: 13p; ; Illustrations: 6 Black and White Photographs, 5 Charts; ; Document Type: Article; L3 - 10.1109/TSMCC.2009.2035101 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=48416573&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Gaitonde, Datta V. T1 - Mean Flowfield Structure of a Supersonic Three-Dimensional Base Flow. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2010/03//Mar/Apr2010 Y1 - 2010/03//Mar/Apr2010 VL - 47 IS - 2 M3 - Article SP - 368 EP - 368 SN - 00218669 AB - The mean flowfield structure in the wake region of a circular cylinder at a 10 deg angle of attack in a Mach 2.5 flow is described. Results from the full three-dimensional Reynolds-averaged Navier-Stokes equations, supplemented with a compressibility-corrected two-equation turbulence model, are compared with extensive available experimental data. Mesh resolved results indicate that surface pressure trends on both the afterbody and the base are reproduced well, but quantitative differences of about 15% are observed in different regions. The main experimental observations of the shock pattern, surface oil flow on the afterbody and the base surfaces, velocity vector plots in the symmetry and lateral planes, and end-view flow images are reproduced to good accuracy. Based on this success, the computed solution is employed to generate a model for the mean flow. The main feature is a pair of longitudinal vortices separated by high-speed fluid entrained primarily from the leeward and lateral afterbody boundary layers and bounded from below by the windward afterbody boundary layer. The mean vorticity distribution reveals a vortex core pair forming a horseshoelike structure. The three-dimensional wave structure is elucidated and correlated with the streamline pattern. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERSONIC planes KW - AERODYNAMICS KW - NAVIER-Stokes equations KW - FLUID dynamics KW - REYNOLDS stress KW - TURBULENCE KW - STOKES equations KW - VISCOUS flow N1 - Accession Number: 49759742; Source Information: Mar/Apr2010, Vol. 47 Issue 2, p368; Subject Term: SUPERSONIC planes; Subject Term: AERODYNAMICS; Subject Term: NAVIER-Stokes equations; Subject Term: FLUID dynamics; Subject Term: REYNOLDS stress; Subject Term: TURBULENCE; Subject Term: STOKES equations; Subject Term: VISCOUS flow; Subject Term: ; Number of Pages: 1p; ; Document Type: Article; L3 - 10.2514/1.45144 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=49759742&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Stanford, Bret K. AU - Beran, Philip S. T1 - Analytical Sensitivity Analysis of an Unsteady Vortex-Lattice Method for Flapping-Wing Optimization. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2010/03//Mar/Apr2010 Y1 - 2010/03//Mar/Apr2010 VL - 47 IS - 2 M3 - Article SP - 647 EP - 647 SN - 00218669 AB - This work considers the design optimization of a flapping wing in forward flight with active shape morphing, aimed at maximizing propulsive efficiency under lift and thrust constraints. This is done with an inviscid three-dimensional unsteady vortex-lattice method, for which the moderate level of fidelity is offset by a relatively inexpensive computational cost. The design is performed with a gradient-based optimization, where gradients are computed with an analytical sensitivity analysis. Wake terms provide the only connection between the forces generated at disparate time steps and must be included to compute the derivative of the aerodynamic state at a time step with respect to the wing shape at all previous steps. The cyclic wing morphing, superimposed upon the flapping motions, is defined by a series of spatial and temporal approximations. The generalized coordinates of a finite number of twisting and bending modes are approximated by cubic splines. The amplitudes at the control points provide design variables; increasing the number of variables (providing the wing morphing with a greater degree of spatial and temporal freedom) is seen to provide increasingly superior designs, with little increase in computational cost. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIDISCIPLINARY design optimization KW - STRUCTURAL optimization KW - FLAPS (Airplanes) KW - AIRPLANE wings KW - AERODYNAMICS KW - VORTEX motion KW - AERONAUTICS -- Research N1 - Accession Number: 49759761; Source Information: Mar/Apr2010, Vol. 47 Issue 2, p647; Subject Term: MULTIDISCIPLINARY design optimization; Subject Term: STRUCTURAL optimization; Subject Term: FLAPS (Airplanes); Subject Term: AIRPLANE wings; Subject Term: AERODYNAMICS; Subject Term: VORTEX motion; Subject Term: AERONAUTICS -- Research; Subject Term: ; Number of Pages: 1p; ; Document Type: Article; L3 - 10.2514/1.46259 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=49759761&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - ABOUL-ENEIN, BASIL H. AU - AHOUL-ENEIN, FAISAL H. T1 - THE CULTURAL GAP DELIVERING HEALTH CARE SERVICES TO ARAB AMERICAN POPULATIONS IN THE UNITED STATES. JO - Journal of Cultural Diversity JF - Journal of Cultural Diversity Y1 - 2010///Spring2010 VL - 17 IS - 1 M3 - Article SP - 20 EP - 23 SN - 10715568 AB - The relationship between Middle Eastern patients and populations of Arab origin with western health care professionals are by no means free of cultural misunderstandings. The relationship is often strained by mutual cultural misunderstanding as well as communicative and linguistic hardship. Even though people from the Middle East do vary racially, they do have shared values and behavior. This can include the importance of family cohesion, and interactive attitudes toward ailments and health. Some issues and concerns in providing health care could vary from attaining adequate information to communicated suggested behavioral change by a patient. Culturally and linguistically appropriate guidelines are warranted to provide an understanding of the cultural distinctiveness of Arab Eastern patients by shortening the gap between the Arab cultures with the western medical culture thus improving their healthcare needs. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Cultural Diversity is the property of Tucker Publications, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CROSS-cultural differences KW - ARAB Americans -- Medical care KW - CULTURAL values KW - MEDICAL care -- United States KW - NEEDS assessment (Medical care) KW - UNITED States KW - Arab Americans KW - Cultural Gap KW - Delivering Health Care N1 - Accession Number: 48874066; ABOUL-ENEIN, BASIL H. 1; AHOUL-ENEIN, FAISAL H. 2,3; Email Address: faboulenein@mail.twu.edu; Source Information: Spring2010, Vol. 17 Issue 1, p20; Subject: CROSS-cultural differences; Subject: ARAB Americans -- Medical care; Subject: CULTURAL values; Subject: MEDICAL care -- United States; Subject: NEEDS assessment (Medical care); Geographic Terms: UNITED States; Author-Supplied Keyword: Arab Americans; Author-Supplied Keyword: Cultural Gap; Author-Supplied Keyword: Delivering Health Care; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=48874066&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Sadat, Mir H. AU - Hughes, James P. T1 - U.S.-Iran Engagement Through Afghanistan. JO - Middle East Policy JF - Middle East Policy Y1 - 2010///Spring2010 VL - 17 IS - 1 M3 - Article SP - 31 EP - 51 PB - Wiley-Blackwell SN - 10611924 AB - The article focuses on the growing diplomatic relations between Iran and the U.S. It mentions that after the governments of the U.S. and Great Britain condemned Iran's nuclear development and plan, the Iranian government refused to attend the January 2010 London Conference on Afghanistan. The U.S. president Barack Obama has announced that improving foreign relations with Iran is one of the most important issues of the government. It further discusses about the relation shared by Iran and Afghanistan and also mentions about the factors that led to trouble relations between Iran and the U.S. KW - NUCLEAR industry KW - IRAN -- Foreign relations -- United States KW - IRAN -- Politics & government KW - IRAN KW - UNITED States KW - GREAT Britain KW - AFGHANISTAN KW - OBAMA, Barack, 1961- N1 - Accession Number: 48584639; Sadat, Mir H. 1; Email Address: hsadat@yahoo.com Hughes, James P. 2; Affiliation: 1: Faculty Member, School of Intelligence Studies, National Defense Intelligence College, Washington, D.C. 2: Special-Tactics officer, United States Air Force.; Source Info: Spring2010, Vol. 17 Issue 1, p31; Subject Term: NUCLEAR industry; Subject Term: IRAN -- Foreign relations -- United States; Subject Term: IRAN -- Politics & government; Subject Term: IRAN; Subject Term: UNITED States; Subject Term: GREAT Britain; Subject Term: AFGHANISTAN; NAICS/Industry Codes: 221113 Nuclear Electric Power Generation; People: OBAMA, Barack, 1961-; Number of Pages: 21p; Document Type: Article L3 - 10.1111/j.1475-4967.2010.00424.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=awr&AN=48584639&site=ehost-live&scope=site DP - EBSCOhost DB - awr ER - TY - JOUR ID - 105161523 T1 - Corrective lens use and refractive error among United States Air Force aircrew. AU - Wright ST AU - Ivan DJ AU - Clark PJ AU - Gooch JM AU - Thompson W Y1 - 2010/03// N1 - Accession Number: 105161523. Language: English. Entry Date: 20100625. Revision Date: 20150711. Publication Type: Journal Article; research. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services. NLM UID: 2984771R. KW - Aviation KW - Eyeglasses -- Utilization KW - Military Personnel -- Statistics and Numerical Data KW - Refractive Errors -- Rehabilitation KW - Adult KW - Human KW - Male KW - Middle Age KW - Prevalence KW - Refraction, Ocular KW - Refractive Errors -- Epidemiology KW - Refractive Errors -- Physiopathology KW - Retrospective Design KW - United States KW - Visual Acuity SP - 197 EP - 201 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 175 IS - 3 CY - Bethesda, Maryland PB - AMSUS AB - Corrective lens use by military aviators is an important consideration in the design of head-mounted equipment. The United States Air Force (USAF) has periodically monitored lens use by aviators; however, it has been over a decade since the last study. We provide an update on the prevalence of corrective lenses and refractive error among USAF aircrew based on eyeglass orders processed through the Spectacle Request Transmission System (SRTS). Currently, 41% of active duty USAF pilots and 54% of other aircrew require corrective lenses to perform flight duties. Refractive errors are characterized by low to moderate levels of myopia with a mean spherical equivalent power of -1.01 diopters (D) for pilots and -1.68 D for others. Contact lenses, and more recently refractive surgery, reduce the number of aircrew that must rely on spectacles when flying; however, spectacle compatibility remains an important consideration in the cockpit. SN - 0026-4075 AD - United States Air Force School of Aerospace Medicine, 2507 Kennedy Circle, Brooks City-Base, TX 78234, USA. U2 - PMID: 20358711. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105161523&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Wright, Steve T. AU - Ivan, Douglas J. AU - Clark, Patrick J. AU - Gooch, John M. AU - Thompson, William T1 - Corrective Lens Use and Refractive Error Among United States Air Force Aircrew. JO - Military Medicine JF - Military Medicine J1 - Military Medicine PY - 2010/03// Y1 - 2010/03// VL - 175 IS - 3 M3 - Article SP - 197 EP - 201 PB - AMSUS SN - 00264075 AB - Corrective lens use by military aviators is an important consideration in the design of head-mounted equipment. The United States Air Force (USAF) has periodically monitored lens use by aviators: however, it has been over a decade since the last study. We provide an update on the prevalence of corrective lenses and refractive error among USAF aircrew based on eyeglass orders processed through the Spectacle Request Transmission System (SRTS). Currently, 41% of active duty USAF pilots and 54% of other aircrew require corrective lenses to perform flight duties. Refractive errors are characterized by low to moderate levels of myopia with a mean spherical equivalent power of -1.01 diopters (D) for pilots and -1.68 D for others. Contact lenses, and more recently refractive surgery, reduce the number of aircrew that must rely on spectacles when flying; however, spectacle compatibility remains an important consideration in the cockpit. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPHTHALMIC lenses KW - EYE -- Refractive errors KW - MYOPIA KW - MILITARY air pilots KW - UNITED States. Air Force -- Airmen KW - UNITED States N1 - Accession Number: 48570887; Source Information: Mar2010, Vol. 175 Issue 3, p197; Subject Term: OPHTHALMIC lenses; Subject Term: EYE -- Refractive errors; Subject Term: MYOPIA; Subject Term: MILITARY air pilots; Subject Term: UNITED States. Air Force -- Airmen; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 5p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=48570887&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Allred, Clark L. AU - Della-Rose, Devin J. AU - Flusche, Brian M. AU - Kiziah, Rex R. AU - Lee, David J. T1 - Explaining Electromagnetic Plane Waves in a Vacuum at the Introductory Level. JO - Physics Teacher JF - Physics Teacher J1 - Physics Teacher PY - 2010/03// Y1 - 2010/03// VL - 48 IS - 3 M3 - Article SP - 173 EP - 175 SN - 0031921X AB - The article presents the views of the authors on how to explain the properties of electromagnetic plane waves in a vacuum at the introductory course level. It emphasizes that instructors must employ the differential form of Maxwell's equations and the concept of vorticity to allow the students to comprehend the relationship between the electric and magnetic fields in an electromagnetic plane wave in vacuum. A solution to a simple common law problem of Michael Faraday is also presented. KW - ELECTROMAGNETIC waves KW - MAXWELL equations KW - VORTEX motion KW - ELECTRIC fields KW - MAGNETIC fields KW - FARADAY, Michael, 1791-1867 N1 - Accession Number: 48404958; Source Information: Mar2010, Vol. 48 Issue 3, p173; Subject Term: ELECTROMAGNETIC waves; Subject Term: MAXWELL equations; Subject Term: VORTEX motion; Subject Term: ELECTRIC fields; Subject Term: MAGNETIC fields; Subject Term: FARADAY, Michael, 1791-1867; Subject Term: ; Number of Pages: 3p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=trh&AN=48404958&site=ehost-live&scope=site DP - EBSCOhost DB - trh ER - TY - JOUR ID - 2010-13345-010 AN - 2010-13345-010 AU - Jackson, R. Jeffrey AU - Lindsay, Douglas R. T1 - Lessons for experience: Why wait? JF - Industrial and Organizational Psychology: Perspectives on Science and Practice JO - Industrial and Organizational Psychology: Perspectives on Science and Practice JA - Ind Organ Psychol Y1 - 2010/03// VL - 3 IS - 1 SP - 48 EP - 51 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 1754-9426 SN - 1754-9434 AD - Jackson, R. Jeffrey, Department of Behavioral Sciences and Leadership, United States Air Force Academy, 2354 Fairchild Drive, Suite 6L101, USAF Academy, CO, US, 80840 N1 - Accession Number: 2010-13345-010. Partial author list: First Author & Affiliation: Jackson, R. Jeffrey; Department of Behavioral Sciences and Leadership, United States Air Force Academy, CO, US. Other Publishers: Cambridge University Press. Release Date: 20100705. Correction Date: 20160125. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Comment/Reply. Language: English. Major Descriptor: Leadership. Minor Descriptor: Employee Skills; Experience Level. Classification: Management & Management Training (3640). Page Count: 4. Issue Publication Date: Mar, 2010. Copyright Statement: Society for Industrial and Organizational Psychology. 2010. AB - In highlighting the value of experience in leadership development, McCall (see record [rid]2010-13345-002[/rid]) describes the 70-20-10 rule, in which challenging assignments contribute the most to leadership development and formal programs contribute the least. This conclusion about the impact of educational programs significantly minimizes their value and indicates that education is currently underperforming in terms of developing effective leaders. Challenging this view, we suggest that educational programs, and specifically postsecondary education, could have a stronger contribution to this formula and, with some deliberate changes could significantly alter the impact education has on overall leadership development. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - leadership development KW - employee experience KW - 2010 KW - Leadership KW - Employee Skills KW - Experience Level KW - 2010 DO - 10.1111/j.1754-9434.2009.01197.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-13345-010&site=ehost-live&scope=site UR - jeff.jackson@usafa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-04087-004 AN - 2010-04087-004 AU - Repperger, D. W. AU - Phillips, C. A. T1 - Haptic devices as a paradigm to enhance learning/function—Theory and empirical studies. JF - Disability and Rehabilitation: Assistive Technology JO - Disability and Rehabilitation: Assistive Technology JA - Disabil Rehabil Assist Technol Y1 - 2010/03// VL - 5 IS - 2 SP - 97 EP - 107 CY - US PB - Informa Healthcare SN - 1748-3107 SN - 1748-3115 AD - Repperger, D. W., Air Force Research Laboratory, Wright-Patterson Air Force Base, 711 Human Performance Wing, Dayton, OH, US, 45433-7022 N1 - Accession Number: 2010-04087-004. PMID: 20184526 Partial author list: First Author & Affiliation: Repperger, D. W.; Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, US. Other Publishers: Taylor & Francis. Release Date: 20100614. Correction Date: 20150921. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Assistive Technology; Human Computer Interaction; Learning; Physical Disorders. Minor Descriptor: Cognitive Processes; Cutaneous Sense; Paradoxical Techniques. Classification: Physical & Somatoform & Psychogenic Disorders (3290). Population: Human (10); Male (30). Age Group: Adolescence (13-17 yrs) (200). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 11. Issue Publication Date: Mar, 2010. Copyright Statement: Informa UK Ltd. 2010. AB - Haptics is a modern term employed to describe both afferent and efferent flows of forces with humans. The appropriate design of these force flow fields when coordinated with information to and from computers and other devices to physically challenged individuals can empower the performance of certain tasks previously not attainable. Extensive empirical work presented herein has demonstrated that proper augmentation of particular dynamic force fields, synchronised with certain cognitive tasks, can lead to improved functionality. More specifically, studies in spasticity, weaken responses and having delayed human response can benefit from these exposures to force fields applied suitably. From a theoretical perspective, the use of the well-known Fitts’ law provides a unifying framework from which one can quantify the benefits derived from the proper exposure to force fields. Another area where haptics offers an exciting new platform to transfer information to and from humans includes subliminal haptics. This provides a paradigm to improve situational awareness and enhances control capability, where it may be missing previously. This article updates how haptics can be used in a variety of empirical settings to enhance learning, modulate human response to assist task completion, present a theoretical framework and improve the self-esteem of physically challenged individuals. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - haptic devices KW - paradigm KW - learning enhancement KW - physically challenged individuals KW - cognitive tasks KW - human computer interactions KW - 2010 KW - Assistive Technology KW - Human Computer Interaction KW - Learning KW - Physical Disorders KW - Cognitive Processes KW - Cutaneous Sense KW - Paradoxical Techniques KW - 2010 DO - 10.3109/17483100903387390 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-04087-004&site=ehost-live&scope=site UR - daniel.repperger@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-04381-001 AN - 2010-04381-001 AU - Todd, James T. AU - Christensen, James T. AU - Guckes, Kevin C. T1 - Are discrimination thresholds a valid measure of variance for judgments of slant from texture? JF - Journal of Vision JO - Journal of Vision JA - J Vis Y1 - 2010/02/23/ VL - 10 IS - 2 CY - US PB - Assn for Research in Vision & Ophthalmology (ARVO) SN - 1534-7362 AD - Todd, James T., Department of Psychology, Ohio State University, Columbus, OH, US, 43210 N1 - Accession Number: 2010-04381-001. PMID: 20462321 Partial author list: First Author & Affiliation: Todd, James T.; Department of Psychology, Ohio State University, Columbus, OH, US. Release Date: 20100412. Correction Date: 20100510. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Depth Perception; Form and Shape Perception; Perceptual Discrimination; Texture Perception; Visual Perception. Minor Descriptor: Observers; Thresholds. Classification: Visual Perception (2323). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. ArtID: 20. Issue Publication Date: Feb 23, 2010. Publication History: First Posted Date: Feb 23, 2010; First Submitted Date: Oct 5, 2009. Copyright Statement: ARVO AB - [Correction Notice: An erratum for this article was reported in Vol 10(3)[22] of Journal of Vision (see record [rid]2010-07725-001[/rid]). The author initials for Christensen and Guckes are incorrect. They should read Christensen, J. C., and Guckes, K. M. The original html and pdf versions have been corrected.] There have been many experiments reported in the literature that have employed discrimination procedures to estimate the variance of observers' slant judgments from texture and binocular disparity, both individually and in combination. The research described in the present article identifies two serious methodological flaws in these studies. Although discrimination thresholds can be influenced by the variance of observers' slant estimates, they can also be affected by systematic biases in observers' judgments, and the presence of 2D cues that are irrelevant to the perception of slant. A series of five experiments is reported to show that: (1) the slants of surfaces specified by texture gradients can be systematically underestimated; (2) surfaces specified by texture gradients appear significantly less slanted than equivalent surfaces specified by binocular disparity; (3) the difference in bias between observers' slant judgments from stereo and texture may be more important than their relative variance in determining how these cues are weighted when presented in combination; (4) observers may be less sensitive to variations in apparent slant from texture than they are to variations in 2D cues that are unrelated to the perception of slant; and (5) these 2D cues may be the primary source of information for discriminating images of textured surfaces. These findings provide strong evidence that the results of prior discrimination studies have been misinterpreted because of the confounding effects of bias and/ or 2D cues, and that this has resulted in several questionable conclusions that have been broadly accepted within the field. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - discrimination thresholds KW - slant KW - depth KW - shape KW - judgments KW - texture KW - cue integration KW - observers KW - 2010 KW - Depth Perception KW - Form and Shape Perception KW - Perceptual Discrimination KW - Texture Perception KW - Visual Perception KW - Observers KW - Thresholds KW - 2010 U1 - Sponsor: National Science Foundation. Grant: BCS-0546107. Recipients: No recipient indicated DO - 10.1167/10.2.20 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-04381-001&site=ehost-live&scope=site UR - Todd.44@osu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Alexander, Michael N. T1 - Under Microscope and Macroscope. JO - Science JF - Science Y1 - 2010/02/19/ VL - 327 IS - 5968 M3 - Book Review SP - 960 EP - 961 SN - 00368075 AB - The article reviews the book "The Nature of Technology: What It Is and How It Evolves," by W. Brian Arthur. KW - NATURE of Technology: What It Is & How It Evolves, The (Book) KW - ARTHUR, W. Brian KW - TECHNOLOGY KW - NONFICTION N1 - Accession Number: 48570154; Alexander, Michael N. 1; Email Address: mina41@ieee.org; Source Information: 2/19/2010, Vol. 327 Issue 5968, p960; Subject: NATURE of Technology: What It Is & How It Evolves, The (Book); Subject: ARTHUR, W. Brian; Subject: TECHNOLOGY; Subject: NONFICTION; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=48570154&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Martin, John A. AU - Davis, Kevin J. T1 - Stacked Deck: Can Governance Structures Explain CEO Compensation Differences Across Countries? JO - Academy of Management Perspectives JF - Academy of Management Perspectives Y1 - 2010/02// VL - 24 IS - 1 M3 - Article SP - 78 EP - 79 PB - Academy of Management SN - 15589080 AB - The article focuses on a study by social researcher Ola Sjoberg that determined that governance structures have a major impact on the way in which corporate earnings are distributed. The authors discusses alternative explanations for income inequality. They suggest that the effects of the U.S. Sarbanes-Oxley Act on income inequality be studied. The authors argue that the difference between governance of U.S. private and public firms as well as governance structures in Asian nations should be analyzed. They suggest that the implications for firm performance be investigated. KW - CORPORATE governance KW - INCOME distribution KW - CHIEF executive officers KW - EXECUTIVE compensation KW - RESEARCH KW - PRIVATE sector KW - PUBLIC sector KW - FINANCIAL performance KW - STOCKHOLDERS KW - LEGAL status, laws, etc. KW - ASIA KW - EUROPE KW - UNITED States KW - SJOBERG, Ola KW - UNITED States. Sarbanes-Oxley Act of 2002 N1 - Accession Number: 50304418; Martin, John A. 1; Davis, Kevin J. 2; Affiliations: 1: Assistant Professor of Management, United States Air Force Academy.; 2: Associate Professor of Management, United States Air Force Academy.; Issue Info: Feb2010, Vol. 24 Issue 1, p78; Thesaurus Term: CORPORATE governance; Thesaurus Term: INCOME distribution; Thesaurus Term: CHIEF executive officers; Thesaurus Term: EXECUTIVE compensation; Thesaurus Term: RESEARCH; Thesaurus Term: PRIVATE sector; Thesaurus Term: PUBLIC sector; Thesaurus Term: FINANCIAL performance; Thesaurus Term: STOCKHOLDERS; Subject Term: LEGAL status, laws, etc.; Subject: ASIA; Subject: EUROPE; Subject: UNITED States; Reviews & Products: UNITED States. Sarbanes-Oxley Act of 2002; People: SJOBERG, Ola; Number of Pages: 2p; Document Type: Article L3 - 10.5465/AMP.2010.50304418 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=50304418&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Martin, John A. AU - Davis, Kevin J. T1 - Learning or Hubris? Why CEOs Create Less Value in Successive Acquisitions. JO - Academy of Management Perspectives JF - Academy of Management Perspectives Y1 - 2010/02// VL - 24 IS - 1 M3 - Article SP - 79 EP - 81 PB - Academy of Management SN - 15589080 AB - The authors discuss research by Nihat Aktas and others concerning why chief executive officers (CEO) create less value with successive acquisitions. Although observers may think that CEO hubris or overconfidence is to blame, the study by Aktas suggests that CEOs are able to correctly assess expected value. However, with successive acquisitions, they improve their ability to manage the risks that accompany the integration of acquisitions. Therefore, they may be willing to pay a higher price for acquisitions. KW - CHIEF executive officers KW - CONSOLIDATION & merger of corporations KW - CORPORATE reorganizations KW - MANAGEMENT KW - RISK management in business KW - EXECUTIVES -- Attitudes KW - RESEARCH KW - BIDDING strategies KW - STOCKHOLDERS KW - INDUSTRIAL management KW - MANAGEMENT -- Study & teaching KW - INVESTMENT banking KW - LEARNING curve (Industrial engineering) KW - AKTAS, Nihat N1 - Accession Number: 50304419; Martin, John A. 1; Davis, Kevin J. 2; Affiliations: 1: Assistant Professor of Management, United States Air Force Academy.; 2: Associate Professor of Management, United States Air Force Academy.; Issue Info: Feb2010, Vol. 24 Issue 1, p79; Thesaurus Term: CHIEF executive officers; Thesaurus Term: CONSOLIDATION & merger of corporations; Thesaurus Term: CORPORATE reorganizations; Thesaurus Term: MANAGEMENT; Thesaurus Term: RISK management in business; Thesaurus Term: EXECUTIVES -- Attitudes; Thesaurus Term: RESEARCH; Thesaurus Term: BIDDING strategies; Thesaurus Term: STOCKHOLDERS; Thesaurus Term: INDUSTRIAL management; Thesaurus Term: MANAGEMENT -- Study & teaching; Thesaurus Term: INVESTMENT banking; Thesaurus Term: LEARNING curve (Industrial engineering); NAICS/Industry Codes: 523110 Investment Banking and Securities Dealing; People: AKTAS, Nihat; Number of Pages: 3p; Document Type: Article L3 - 10.5465/AMP.2010.50304419 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=50304419&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 105063140 T1 - Visual search performance with 3-D auditory cues: effects of motion, target location, and practice. AU - Mclntire JP AU - Havig PR AU - Watamaniuk SN AU - Gilkey RH AU - Mclntire, John P AU - Havig, Paul R AU - Watamaniuk, Scott N J AU - Gilkey, Robert H Y1 - 2010/02// N1 - Accession Number: 105063140. Language: English. Entry Date: 20100903. Revision Date: 20170228. Publication Type: journal article; research. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. NLM UID: 0374660. KW - Auditory Perception KW - Cues KW - Visual Perception KW - Adult KW - Analysis of Variance KW - Female KW - Human KW - Male KW - Middle Age KW - Orientation KW - Sound Localization KW - Task Performance and Analysis KW - Young Adult SP - 41 EP - 53 JO - Human Factors JF - Human Factors JA - HUM FACTORS VL - 52 IS - 1 PB - Sage Publications Inc. AB - Objectives: We evaluate visual search performance in both static (nonmoving) and dynamic (moving) search environments with and without spatial (3-D) auditory cues to target location. Additionally, the effects of target trajectory, target location, and practice are assessed.Background: Previous research on aurally aided visual search has shown a significant reduction in response times when 3-D auditory cues are displayed, relative to unaided search. However, the vast majority of this research has examined only searches for static targets in static visual environments. The present experiment was conducted to examine the effect of dynamic stimuli upon aurally aided visual search performance.Method: The 8 participants conducted repeated searches for a single visual target hidden among 15 distracting stimuli. The four main conditions of the experiment consisted of the four possible combinations of 3-D auditory cues (present or absent) and search environment (static or dynamic).Results: The auditory cues were comparably effective at reducing search times in dynamic environments (-25%) as in static environments (-22%). Audio cues helped all participants. The cues were most beneficial when the target appeared at large eccentricities and on the horizontal plane. After a brief initial exposure to 3-D audio, no training or practice effects with 3-D audio were found.Conclusion: We conclude that 3-D audio is as beneficial in environments comprising moving stimuli as in those comprising static stimuli.Application: Operators in dynamic environments, such as aircraft cockpits, ground vehicles, and command-and-control centers, could benefit greatly from 3-D auditory technology when searching their environments for visual targets or other time-critical information. SN - 0018-7208 AD - Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA AD - Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA. john.mcintire@wpafb.af.mil U2 - PMID: 20653224. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105063140&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Gunapala, Sarath D. AU - Bandara, Sumith V. AU - Liu, John K. AU - Mumolo, Jason M. AU - Ting, David Z. AU - Hill, Cory J. AU - Jean Nguyen AU - Simolon, Brian AU - Woolaway, James AU - Wang, Samuel C. AU - Weiping Li AU - LeVan, Paul D. AU - Tidrow, Meimei Z. T1 - Demonstration of Megapixel Dual-Band QWIP Focal Plane Array. JO - IEEE Journal of Quantum Electronics JF - IEEE Journal of Quantum Electronics J1 - IEEE Journal of Quantum Electronics PY - 2010/02// Y1 - 2010/02// VL - 46 IS - 2 M3 - Article SP - 285 EP - 293 SN - 00189197 AB - Quantum well infrared photodetectors (QWIPs) are well known for their stability, high pixel-pixel uniformity and high pixel operability which are quintessential parameters for large area imaging arrays. In this paper we report the first demonstration of the megapixel-simultaneously-readable and pixel-co-registered dual-band QWIP focal plane array (FPA). The dual-band QWIP device was developed by stacking two multi-quantum-well stacks tuned to absorb two different infrared wavelengths. The full width at half maximum (FWHM) of the midwave infrared (MWIR) band extends from 4.4-5.1 μm and FWHM of the long-wave infrared (LWIR) band extends from 7.8-8.8 μm. Dual-band QWIP detector arrays were hybridized with direct injection 30 μm pixel pitch megapixel dual-band simultaneously readable CMOS read out integrated circuits using the indium bump hybridization technique. The initial dual-band megapixel QWIP FPAs were cooled to 68 K operating temperature. The preliminary data taken from the first megapixel QWIP FPA has shown system ΝΕΔΤ of 27 and 40 mK for MWIR and LWIR bands, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Journal of Quantum Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM wells KW - OPTOELECTRONIC devices KW - DETECTORS -- Research KW - HYBRIDIZATION -- Research KW - WAVELENGTHS N1 - Accession Number: 48455728; Source Information: Feb2010, Vol. 46 Issue 2, p285; Subject Term: QUANTUM wells; Subject Term: OPTOELECTRONIC devices; Subject Term: DETECTORS -- Research; Subject Term: HYBRIDIZATION -- Research; Subject Term: WAVELENGTHS; Subject Term: ; Number of Pages: 9p; ; Document Type: Article; L3 - 10.1109/JQE.2009.2024550 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=48455728&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Sengupta, Shamik AU - Chatterjee, Mainak AU - Kwiat, Kevin A. T1 - A Game Theoretic Framework for Power Control in Wireless Sensor Networks. JO - IEEE Transactions on Computers JF - IEEE Transactions on Computers Y1 - 2010/02// VL - 59 IS - 2 M3 - Article SP - 231 EP - 242 SN - 00189340 AB - In infrastructure-less sensor networks, efficient usage of energy is very critical because of the limited energy available to the sensor nodes. Among various phenomena that consume energy, radio communication is by far the most demanding one. One of the effective ways to limit unnecessary energy loss is to control the power at which the nodes transmit signals. In this paper, we apply game theory to solve the power control problem in a CDMA-based distributed sensor network. We formulate a noncooperative game under incomplete information and study the existence of Nash equilibrium. With the help of this equilibrium, we devise a distributed algorithm for optimal power control and prove that the system is power stable only if the nodes comply with certain transmit power thresholds. We show that even in a noncooperative scenario, it is in the best interest of the nodes to comply with these thresholds. The power level at which a node should transmit, to maximize its utility, is evaluated. Moreover, we compare the utilities when the nodes are allowed to transmit with discrete and continuous power levels; the performance with discrete levels is upper bounded by the continuous case. We define a distortion metric that gives a quantitative measure of the goodness of having finite power levels and also find those levels that minimize the distortion. Numerical results demonstrate that the proposed algorithm achieves the best possible payoff/utility for the sensor nodes even by consuming less power. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Computers is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENERGY consumption KW - CODE division multiple access KW - GAME theory KW - DETECTORS KW - NUMERICAL analysis KW - distributed power control KW - energy efficiency KW - game theory KW - Wireless sensor network N1 - Accession Number: 48265903; Sengupta, Shamik 1; Email Address: ssengupta@jjay.cuny.edu; Chatterjee, Mainak 2; Email Address: mainak@eecs.ucf.edu; Kwiat, Kevin A. 3; Email Address: Kevin.Kwiat@rl.af.mil; Affiliations: 1: Department of Mathematics and Computer Science, John Jay College of Criminal Justice of the CUNY, New York, NY 10019; 2: School of Electrical Engineering and Computer Science, University of Central Florida, Orlando, FL 32816; 3: Information Directorate, Air Force Research Laboratory, Rome, NY 13441; Issue Info: Feb2010, Vol. 59 Issue 2, p231; Thesaurus Term: ENERGY consumption; Thesaurus Term: CODE division multiple access; Thesaurus Term: GAME theory; Subject Term: DETECTORS; Subject Term: NUMERICAL analysis; Author-Supplied Keyword: distributed power control; Author-Supplied Keyword: energy efficiency; Author-Supplied Keyword: game theory; Author-Supplied Keyword: Wireless sensor network; Number of Pages: 12p; Illustrations: 1 Diagram, 9 Graphs; Document Type: Article L3 - 10.1109/TC.2009.82 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=48265903&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Ahamed, Maqusood AU - Posgai, Ryan AU - Gorey, Timothy J. AU - Nielsen, Mark AU - Hussain, Saber M. AU - Rowe, John J. T1 - Silver nanoparticles induced heat shock protein 70, oxidative stress and apoptosis in Drosophila melanogaster JO - Toxicology & Applied Pharmacology JF - Toxicology & Applied Pharmacology Y1 - 2010/02// VL - 242 IS - 3 M3 - Article SP - 263 EP - 269 SN - 0041008X AB - Abstract: Due to the intensive commercial application of silver nanoparticles (Ag NPs), risk assessment of this nanoparticle is of great importance. Our previous in vitro study demonstrated that Ag NPs caused DNA damage and apoptosis in mouse embryonic stem cells and fibroblasts. However, toxicity of Ag NPs in vivo is largely lacking. This study was undertaken to examine the toxic effects of well-characterized polysaccharide coated 10 nm Ag NPs on heat shock stress, oxidative stress, DNA damage and apoptosis in Drosophila melanogaster. Third instar larvae of D. melanogaster were fed a diet of standard cornmeal media mixed with Ag NPs at the concentrations of 50 and 100 μg/ml for 24 and 48 h. Ag NPs up-regulated the expression of heat shock protein 70 and induced oxidative stress in D. melanogaster. Malondialdehyde level, an end product of lipid peroxidation was significantly higher while antioxidant glutathione content was significantly lower in Ag NPs exposed organisms. Activities of antioxidant enzyme superoxide dismutase and catalase were also significantly higher in the organisms exposed to Ag NPs. Furthermore, Ag NPs up-regulated the cell cycle checkpoint p53 and cell signaling protein p38 that are involved in the DNA damage repair pathway. Moreover, activities of caspase-3 and caspase-9, markers of apoptosis were significantly higher in Ag NPs exposed organisms. The results indicate that Ag NPs in D. melanogaster induce heat shock stress, oxidative stress, DNA damage and apoptosis. This study suggests that the organism is stressed and thus warrants more careful assessment of Ag NPs using in vivo models to determine if chronic exposure presents developmental and reproductive toxicity. [Copyright &y& Elsevier] AB - Copyright of Toxicology & Applied Pharmacology is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Apoptosis KW - Risk assessment KW - DNA damage KW - Colloidal gold KW - Heat shock proteins KW - Oxidative stress KW - Drosophila melanogaster KW - Mice as laboratory animals KW - Embryonic stem cells KW - Fibroblasts KW - Superoxide dismutase KW - Hsp 70 KW - Silver nanoparticles N1 - Accession Number: 47449781; Ahamed, Maqusood 1; Posgai, Ryan 1; Gorey, Timothy J. 1; Nielsen, Mark 1; Hussain, Saber M. 2; Rowe, John J. 1; Email Address: John.Rowe@notes.udayton.edu; Affiliations: 1: Department of Biology, Center for Tissue Regeneration and Engineering, University of Dayton, Dayton, OH 45469, USA; 2: Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA; Issue Info: Feb2010, Vol. 242 Issue 3, p263; Thesaurus Term: Apoptosis; Thesaurus Term: Risk assessment; Thesaurus Term: DNA damage; Subject Term: Colloidal gold; Subject Term: Heat shock proteins; Subject Term: Oxidative stress; Subject Term: Drosophila melanogaster; Subject Term: Mice as laboratory animals; Subject Term: Embryonic stem cells; Subject Term: Fibroblasts; Subject Term: Superoxide dismutase; Author-Supplied Keyword: Hsp 70; Author-Supplied Keyword: Silver nanoparticles; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.taap.2009.10.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=47449781&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2010-13780-004 AN - 2010-13780-004 AU - McIntire, John P. AU - Havig, Paul R. AU - Watamaniuk, Scott N. J. AU - Gilkey, Robert H. T1 - Visual search performance with 3-D auditory cues: Effects of motion, target location, and practice. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2010/02// VL - 52 IS - 1 SP - 41 EP - 53 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - McIntire, John P., Air Force Research Laboratory, 2255 H Street, Building 248, Wright-Patterson AFB, OH, US, 45433 N1 - Accession Number: 2010-13780-004. Partial author list: First Author & Affiliation: McIntire, John P.; Air Force Research Laboratory, Wright- Patterson AFB, OH, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20100809. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Auditory Stimulation; Motion Perception; Practice; Visual Search. Minor Descriptor: Cues; Visual Stimulation. Classification: Human Experimental Psychology (2300). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 13. Issue Publication Date: Feb, 2010. Publication History: Accepted Date: Mar 10, 2010; First Submitted Date: Apr 29, 2009. Copyright Statement: Human Factors and Ergonomics Society. 2010. AB - Objectives: We evaluate visual search performance in both static (nonmoving) and dynamic (moving) search environments with and without spatial (3-D) auditory cues to target location. Additionally, the effects of target trajectory, target location, and practice are assessed. Background: Previous research on aurally aided visual search has shown a significant reduction in response times when 3-D auditory cues are displayed, relative to unaided search. However, the vast majority of this research has examined only searches for static targets in static visual environments. The present experiment was conducted to examine the effect of dynamic stimuli upon aurally aided visual search performance. Method: The 8 participants conducted repeated searches for a single visual target hidden among 15 distracting stimuli. The four main conditions of the experiment consisted of the four possible combinations of 3-D auditory cues (present or absent) and search environment (static or dynamic). Results: The auditory cues were comparably effective at reducing search times in dynamic environments (—25%) as in static environments (—22%). Audio cues helped all participants. The cues were most beneficial when the target appeared at large eccentricities and on the horizontal plane. After a brief initial exposure to 3-D audio, no training or practice effects with 3-D audio were found. Conclusion: We conclude that 3-D audio is as beneficial in environments comprising moving stimuli as in those comprising static stimuli. Application: Operators in dynamic environments, such as aircraft cockpits, ground vehicles, and command-and-control centers, could benefit greatly from 3-D auditory technology when searching their environments for visual targets or other time-critical information. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - visual search performance KW - 3-D auditory cues KW - motion KW - target location KW - practice KW - 2010 KW - Auditory Stimulation KW - Motion Perception KW - Practice KW - Visual Search KW - Cues KW - Visual Stimulation KW - 2010 DO - 10.1177/0018720810368806 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-13780-004&site=ehost-live&scope=site UR - john.mcintire@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-03200-003 AN - 2011-03200-003 AU - Brown, Janice M. AU - Bray, Robert M. AU - Hartzell, Michael C. T1 - A comparison of alcohol use and related problems among women and men in the military. JF - Military Medicine JO - Military Medicine JA - Mil Med Y1 - 2010/02// VL - 175 IS - 2 SP - 101 EP - 107 CY - US PB - Assn of Military Surgeons of the US SN - 0026-4075 SN - 1930-613X AD - Brown, Janice M., RTI International, 3040 Cornwallis Road, Research Triangle Park, NC, US, 27709 N1 - Accession Number: 2011-03200-003. PMID: 20180479 Partial author list: First Author & Affiliation: Brown, Janice M.; RTI International, Research Triangle Park, NC, US. Release Date: 20110627. Correction Date: 20170302. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Alcohol Abuse; Alcohol Drinking Patterns; Human Sex Differences; Military Personnel. Minor Descriptor: At Risk Populations; Binge Drinking; Commissioned Officers; Enlisted Military Personnel. Classification: Substance Abuse & Addiction (3233); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: Department of Defense Survey of Health Related Behaviors among Military Personnel. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 7. Issue Publication Date: Feb, 2010. Copyright Statement: All rights reserved. Association of Military Surgeons of the US AB - Using data from the 2002 Department of Defense Survey of Health Related Behaviors, we examined levels of drinking and alcohol-related problems (dependence symptoms, driving after drinking, productivity loss, serious consequences) for enlisted men and women and male and female officers. Findings showed that men were more likely than women to be heavy or binge drinkers and to experience alcohol-related problems. Similarly, enlisted men and women were more likely than male and female officers to be heavy or binge drinkers. Driving after drinking was more common among men than women and more common among officers than enlisted personnel. Officers had lower rates of dependence symptoms and other serious consequences than enlisted personnel. Despite men’s heavier drinking, women showed equal or higher rates of dependence symptoms and productivity loss and appeared to be at risk for alcohol problems at lower levels of consumption. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - alcohol usage KW - gender differences KW - military KW - binge drinking KW - at risk populations KW - alcohol-related problems KW - enlisted men & women KW - male & female officers KW - 2010 KW - Alcohol Abuse KW - Alcohol Drinking Patterns KW - Human Sex Differences KW - Military Personnel KW - At Risk Populations KW - Binge Drinking KW - Commissioned Officers KW - Enlisted Military Personnel KW - 2010 U1 - Sponsor: Department of the Army. Grant: Cooperative Agreement DAMD 17-00-2-0057. Recipients: No recipient indicated DO - 10.7205/MILMED-D-09-00080 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-03200-003&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Gadhamshetty, Venkataramana AU - Arudchelvam, Yalini AU - Nirmalakhandan, Nagamany AU - Johnson, David C. T1 - Modeling dark fermentation for biohydrogen production: ADM1-based model vs. Gompertz model JO - International Journal of Hydrogen Energy JF - International Journal of Hydrogen Energy Y1 - 2010/01/15/ VL - 35 IS - 2 M3 - Article SP - 479 EP - 490 SN - 03603199 AB - Abstract: Biohydrogen production by dark fermentation in batch reactors was modeled using the Gompertz equation and a model based on Anaerobic Digestion Model (ADM1). The ADM1 framework, which has been well accepted for modeling methane production by anaerobic digestion, was modified in this study for modeling hydrogen production. Experimental hydrogen production data from eight reactor configurations varying in pressure conditions, temperature, type and concentration of substrate, inocula source, and stirring conditions were used to evaluate the predictive abilities of the two modeling approaches. Although the quality of fit between the measured and fitted hydrogen evolution by the Gompertz equation was high in all the eight reactor configurations with r 2 ∼0.98, each configuration required a different set of model parameters, negating its utility as a general approach to predict hydrogen evolution. On the other hand, the ADM1-based model (ADM1BM) with predefined parameters was able to predict COD, cumulative hydrogen production, as well as volatile fatty acids production, albeit at a slightly lower quality of fit. Agreement between the experimental temporal hydrogen evolution data and the ADM1BM predictions was statistically significant with r 2 >0.91 and p-value <1E-04. Sensitivity analysis of the validated model revealed that hydrogen production was sensitive to only six parameters in the ADM1BM. [Copyright &y& Elsevier] AB - Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Hydrogen production KW - Biomass energy KW - Fermentation KW - Bioreactors KW - Anaerobic digestion (Sewage purification) KW - Engineering models KW - Temperature effect KW - Prediction models KW - ADM1 KW - Bioenergy KW - Biohydrogen KW - Dark fermentation KW - Modeling N1 - Accession Number: 47596078; Gadhamshetty, Venkataramana 1; Email Address: vgadhamshetty@fairpoint.net; Arudchelvam, Yalini 2; Nirmalakhandan, Nagamany 2; Johnson, David C. 3; Affiliations: 1: Air Force Research Laboratory, Tyndall AFB, 139 Barnes Drive, Panama City, FL 32403, USA; 2: Civil Engineering Department, New Mexico State University, Las Cruces, NM 88003, USA; 3: Institute for Energy and Environment, New Mexico State University, Las Cruces, NM 88003, USA; Issue Info: Jan2010, Vol. 35 Issue 2, p479; Thesaurus Term: Hydrogen production; Thesaurus Term: Biomass energy; Thesaurus Term: Fermentation; Thesaurus Term: Bioreactors; Thesaurus Term: Anaerobic digestion (Sewage purification); Subject Term: Engineering models; Subject Term: Temperature effect; Subject Term: Prediction models; Author-Supplied Keyword: ADM1; Author-Supplied Keyword: Bioenergy; Author-Supplied Keyword: Biohydrogen; Author-Supplied Keyword: Dark fermentation; Author-Supplied Keyword: Modeling; NAICS/Industry Codes: 221117 Biomass Electric Power Generation; NAICS/Industry Codes: 221119 Other electric power generation; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.ijhydene.2009.11.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=47596078&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Relph, Rachael A. AU - Guasco, Timothy L. AU - Elliott, Ben M. AU - Kamrath, Michael Z. AU - McCoy, Anne B. AU - Steele, Ryan P. AU - Schofield, Daniel P. AU - Jordan, Kenneth D. AU - Viggiano, Albert A. AU - Ferguson, Eldon E. AU - Johnson, Mark A. T1 - How the Shape of an H-Bonded Network Controls Proton-Coupled Water Activation in HONO Formation. JO - Science JF - Science Y1 - 2010/01/15/ VL - 327 IS - 5963 M3 - Article SP - 308 EP - 312 SN - 00368075 AB - Many chemical reactions in atmospheric aerosols and bulk aqueous environments are influenced by the surrounding solvation shell, but the precise molecular interactions underlying such effects have rarely been elucidated. We exploited recent advances in isomer-specific cluster vibrational spectroscopy to explore the fundamental relation between the hydrogen (H)--bonding arrangement of a set of ion-solvating water molecules and the chemical activity of this ensemble. We find that the extent to which the nitrosonium ion (NO+) and water form nitrous acid (HONO) and a hydrated proton cluster in the critical trihydrate depends sensitively on-the geometrical arrangement of the water molecules in the network. Theoretical analysis of these data details the role of the water network in promoting charge delocalization. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Atmospheric chemistry KW - RESEARCH KW - Nitrogen oxides -- Environmental aspects KW - Aerosols (Sprays) -- Environmental aspects KW - Water chemistry KW - Hydrogen bonding KW - Nitrous acid KW - Nitric oxide KW - Chemical reactions -- Environmental aspects KW - Molecular structure KW - Solvation N1 - Accession Number: 47851835; Relph, Rachael A. 1; Guasco, Timothy L. 1; Elliott, Ben M. 1; Kamrath, Michael Z. 1; McCoy, Anne B. 2; Steele, Ryan P. 1; Schofield, Daniel P. 3; Jordan, Kenneth D. 3; Viggiano, Albert A. 4; Ferguson, Eldon E. 5; Johnson, Mark A. 1; Email Address: mark.johnson@yale.edu; Affiliations: 1: Department of Chemistry, Yale University, Post Office Box 208107, New Haven, CT 06520, USA; 2: Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA; 3: Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA; 4: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, MA 01731, USA; 5: Climate Monitoring and Diagnostics Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO 80305, USA; Issue Info: 1/15/2010, Vol. 327 Issue 5963, p308; Thesaurus Term: Atmospheric chemistry; Thesaurus Term: RESEARCH; Thesaurus Term: Nitrogen oxides -- Environmental aspects; Thesaurus Term: Aerosols (Sprays) -- Environmental aspects; Thesaurus Term: Water chemistry; Subject Term: Hydrogen bonding; Subject Term: Nitrous acid; Subject Term: Nitric oxide; Subject Term: Chemical reactions -- Environmental aspects; Subject Term: Molecular structure; Subject Term: Solvation; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=47851835&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Samuels, Steven M. AU - Foster, Craig A. AU - Lindsay, Douglas R. T1 - Freefall, Self-Efficacy, and Leading in Dangerous Contexts. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2010/01/02/Jan2010 Supplement 1 VL - 22 M3 - Article SP - 117 EP - 136 PB - Taylor & Francis Ltd SN - 08995605 AB - We examined whether completion of a military Freefall parachuting program enhanced self-efficacy in the domains of leader self-control and leader assertiveness. The Freefall program was particularly suited for self-efficacy development because Freefall required personal mastery to overcome a substantial perceived risk. We surveyed participants at the beginning and end of the Freefall program. We also distributed a subsequent survey nine months later that allowed us to compare leader self-efficacy as a function of participation in Freefall and a similarly risky but less mastery-oriented Soaring program (i.e., flying gliders). The obtained results indicated that successful performance in Freefall, but not in Soaring, contributed to leader self-control and leader assertiveness. The implications for leading in dangerous and traditional contexts are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEADERSHIP KW - SELF-efficacy KW - SELF-control KW - DISCIPLINE KW - CONTROL (Psychology) N1 - Accession Number: 49086260; Samuels, Steven M. 1; Email Address: Steven.Samuels@usafa.edu; Foster, Craig A. 1; Lindsay, Douglas R. 1; Source Information: Jan2010 Supplement 1, Vol. 22, p117; Subject: LEADERSHIP; Subject: SELF-efficacy; Subject: SELF-control; Subject: DISCIPLINE; Subject: CONTROL (Psychology); Number of Pages: 20p; Illustrations: 3 Charts; Document Type: Article L3 - 10.1080/08995601003644379 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=49086260&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 105178555 T1 - Freefall, self-efficacy, and leading in dangerous contexts. AU - Samuels SM AU - Foster CA AU - Lindsay DR Y1 - 2010/01/02/Jan2010 Supplement 1 N1 - Accession Number: 105178555. Language: English. Entry Date: 20100604. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Supplement Title: Jan2010 Supplement 1. Journal Subset: Biomedical; Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services; Psychiatry/Psychology. Instrumentation: Leader Self-Efficacy Scale (LSES). NLM UID: 8915802. KW - Aeronautical Sports KW - Leadership KW - Military Personnel -- Psychosocial Factors KW - Occupational Safety KW - Self-Efficacy KW - Analysis of Variance KW - Control (Psychology) KW - Correlation Coefficient KW - Descriptive Statistics KW - Human KW - Leaders -- Psychosocial Factors KW - Psychological Tests KW - Risk Taking Behavior KW - Scales KW - Survey Research KW - T-Tests KW - United States Air Force KW - Work Environment SP - S117 EP - 36 JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) JA - MILIT PSYCHOL VL - 22 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - We examined whether completion of a military Freefall parachuting program enhanced self-efficacy in the domains of leader self-control and leader assertiveness. The Freefall program was particularly suited for self-efficacy development because Freefall required personal mastery to overcome a substantial perceived risk. We surveyed participants at the beginning and end of the Freefall program. We also distributed a subsequent survey nine months later that allowed us to compare leader self-efficacy as a function of participation in Freefall and a similarly risky but less mastery-oriented Soaring program (i.e., flying gliders). The obtained results indicated that successful performance in Freefall, but not in Soaring, contributed to leader self-control and leader assertiveness. The implications for leading in dangerous and traditional contexts are discussed. SN - 0899-5605 AD - Department of Behavioral Sciences and Leadership, United States Air Force Academy, Colorado; Steven.Samuels@usafa.edu DO - 10.1080/08995601003644379 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105178555&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Bridges, Elizabeth T1 - Facilitation of Evidence-Based Nursing Practice During Military Operations. JO - Nursing Research JF - Nursing Research Y1 - 2010/01/02/Jan/Feb2010 Supplement VL - 59 M3 - Article SP - S75 EP - S79 SN - 00296562 AB - The translation of research to clinical practice and health decision making is challenging. Under military operational conditions (e.g., the provision of care in the field), translation may be even more challenging. Two barriers that limit the use of evidence to guide practice, which are particularly germane under operational conditions, are conflicting or absent research results specific to the population of interest and relevant studies not being compiled in one place (Titler, 2007; Titler & Everett, 2001). The Agency for Healthcare Research and Quality Knowledge Transfer Framework (Nieva et al., 2005) provides a structure to facilitate evidence translation and to overcome these barriers. This article summarizes one aspect of a program of operational nursing research sup- ported by the TriService Nursing Research Program, which exemplifies the three stages of the Agency for Healthcare Research and Quality framework. [ABSTRACT FROM AUTHOR] AB - Copyright of Nursing Research is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EVIDENCE-based nursing KW - DECISION making in nursing KW - MILITARY nursing KW - NURSING research KW - KNOWLEDGE transfer (Communication) KW - health decision making KW - knowledge transfer KW - military nursing research KW - research translation to clinical practice N1 - Accession Number: 47761433; Bridges, Elizabeth 1,2,3,4; Email Address: ebridges@u.washington.edu; Source Information: Jan/Feb2010 Supplement, Vol. 59, pS75; Subject: EVIDENCE-based nursing; Subject: DECISION making in nursing; Subject: MILITARY nursing; Subject: NURSING research; Subject: KNOWLEDGE transfer (Communication); Author-Supplied Keyword: health decision making; Author-Supplied Keyword: knowledge transfer; Author-Supplied Keyword: military nursing research; Author-Supplied Keyword: research translation to clinical practice; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=47761433&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 105290518 T1 - A prospective study of depression following combat deployment in support of the wars in Iraq and Afghanistan. AU - Wells TS AU - LeardMann CA AU - Fortuna SO AU - Smith B AU - Smith TC AU - Ryan MAK AU - Boyko EJ AU - Blazer D Y1 - 2010/01// N1 - Accession Number: 105290518. Corporate Author: Millennium Cohort Study Team. Language: English. Entry Date: 20100226. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Core Nursing; Double Blind Peer Reviewed; Nursing; Peer Reviewed; Public Health; USA. Special Interest: Military/Uniformed Services; Psychiatry/Psychology; Public Health. Instrumentation: CAGE Questionnaire; Primary Care Evaluation of Mental Disorders Patient Health Questionnaire (PHQ); PTSD Checklist-Civilian Version; Millennium Cohort Questionnaire; Medical Outcomes Study Short Form-36 Health Survey for Veterans. NLM UID: 1254074. KW - Depression -- Epidemiology -- United States KW - Depression -- Etiology KW - Military Personnel -- Psychosocial Factors KW - Stress Disorders, Post-Traumatic -- Epidemiology -- United States KW - Stress, Psychological -- Complications KW - Adult KW - Afghanistan KW - Checklists KW - Clinical Assessment Tools KW - Confidence Intervals KW - Data Analysis Software KW - Depression -- Risk Factors KW - Female KW - Human KW - Iraq KW - Male KW - Middle Age KW - Multiple Logistic Regression KW - Odds Ratio KW - Overseas Deployment KW - Psychometrics KW - Questionnaires KW - Stress Disorders, Post-Traumatic -- Diagnosis KW - United States KW - War -- Afghanistan KW - War -- Iraq SP - 90 EP - 99 JO - American Journal of Public Health JF - American Journal of Public Health JA - AM J PUBLIC HEALTH VL - 100 IS - 1 CY - Washington, District of Columbia PB - American Public Health Association AB - OBJECTIVE: We investigated relations between deployment and new-onset depression among US service members recently deployed to the wars in Iraq and Afghanistan. METHODS: We included 40 219 Millennium Cohort Study participants who completed baseline and follow-up questionnaires and met inclusion criteria. Participants were identified with depression if they met the Primary Care Evaluation of Mental Disorders Patient Health Questionnaire criteria for depression at follow-up, but not at baseline. RESULTS: Deployed men and women with combat exposures had the highest onset of depression, followed by those not deployed and those deployed without combat exposures. Combat-deployed men and women were at increased risk for new-onset depression compared with nondeployed men and women (men: adjusted odds ratio [AOR]=1.32; 95% confidence interval [CI]=1.13, 1.54; women: AOR=2.13; 95% CI=1.70, 2.65). Conversely, deployment without combat exposures led to decreased risk for new-onset depression compared with those who did not deploy (men: AOR=0.66; 95% CI=0.53, 0.83; women: AOR=0.65; 95% CI=0.47, 0.89). CONCLUSIONS: Deployment with combat exposures is a risk factor for new-onset depression among US service members. Post-deployment screening may be beneficial for US service members exposed to combat. SN - 0090-0036 AD - US Air Force Research Laboratory, 711th HPW/RHPA, Building 824 Room 206, 2800 Q St, Wright-Patterson AFB, OH 45433-7947, USA. timothy.wells@wpafb.af.mil U2 - PMID: 19910353. DO - 10.2105/AJPH.2008.155432 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105290518&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Perryman, Alexa A. AU - Butler, Frank C. AU - Martin, John A. AU - Ferris, Gerald R. T1 - When the CEO is ill: Keeping quiet or going public? JO - Business Horizons JF - Business Horizons Y1 - 2010/01// VL - 53 IS - 1 M3 - Article SP - 21 EP - 29 SN - 00076813 AB - Abstract: CEOs represent the pinnacle of leadership in organizations. In addition to power and prestige, constant media scrutiny and pressures to exceed past levels of firm performance are often associated with this role. Although CEOs may rely on other top managers for input regarding operational decisions and long-term planning, the outcomes of strategic initiatives rest solely on their shoulders. Moreover, how CEOs are depicted in the press can greatly affect public opinion about their organizations. In recent years, CEO health and health concerns have made headlines for such well-known companies as McDonald''s, Clorox, Pilgrim''s Pride, and EarthLink. In this article we discuss the ramifications of disclosure and non-disclosure of serious CEO health issues, and their potential impact on shareholder wealth and succession planning. We conclude by offering a few thoughts about the future direction of CEO health. [Copyright &y& Elsevier] AB - Copyright of Business Horizons is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHIEF executive officers KW - LEADERSHIP KW - SUCCESSION planning KW - STOCKHOLDERS wealth KW - DISCLOSURE in accounting KW - STRATEGIC planning KW - CORPORATIONS -- Finance KW - MEDICAL policy KW - CEO health KW - Disclosure KW - Shareholder wealth KW - Succession N1 - Accession Number: 45641949; Perryman, Alexa A. 1; Email Address: a.a.perryman@tcu.edu; Butler, Frank C. 2; Email Address: frank-butler@utc.edu; Martin, John A. 3; Email Address: john.martin@usafa.edu; Ferris, Gerald R. 4; Email Address: gferris@cob.fsu.edu; Affiliations: 1: Neeley School of Business, Texas Christian University, TCU Box 298530, Fort Worth, TX 76129, U.S.A.; 2: College of Business, University of Tennessee at Chattanooga, 615 McCallie Avenue, Chattanooga, TN 37403, U.S.A.; 3: United States Air Force Academy, USAFA/DFM, 2354 Fairchild Drive, Suite 6H-130, USAF Academy, CO 80840-5099, U.S.A.; 4: College of Business, Florida State University, 821 Academic Way, Tallahassee, FL 32306-1110, U.S.A.; Issue Info: Jan2010, Vol. 53 Issue 1, p21; Thesaurus Term: CHIEF executive officers; Thesaurus Term: LEADERSHIP; Thesaurus Term: SUCCESSION planning; Thesaurus Term: STOCKHOLDERS wealth; Thesaurus Term: DISCLOSURE in accounting; Thesaurus Term: STRATEGIC planning; Thesaurus Term: CORPORATIONS -- Finance; Subject Term: MEDICAL policy; Author-Supplied Keyword: CEO health; Author-Supplied Keyword: Disclosure; Author-Supplied Keyword: Shareholder wealth; Author-Supplied Keyword: Succession; NAICS/Industry Codes: 522291 Consumer Lending; NAICS/Industry Codes: 923120 Administration of Public Health Programs; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.bushor.2009.08.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=45641949&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Hassan, Anthony M.1, hassana@usc.edu AU - Dellow, Donald A.2 AU - Jackson, Robert J.3 T1 - The AACC Leadership Competencies: Parallel Views from the Top. JO - Community College Journal of Research & Practice JF - Community College Journal of Research & Practice J1 - Community College Journal of Research & Practice PY - 2010/01//Jan/Feb2010 Y1 - 2010/01//Jan/Feb2010 VL - 34 IS - 1/2 CP - 1/2 M3 - Article SP - 180 EP - 198 SN - 10668926 AB - This study examined how a group of community college presidents and board of trustee chairpersons from New York and Florida viewed the competencies, characteristics, and professional skills identified by the American Association of Community Colleges (AACC) (2005) as important for effective community college leadership. In addition, the presidents were asked to identify those activities and experiences that they found helpful in developing the AACC leadership competencies. The results from this study suggest that community college presidents and board of trustee chairpersons converge in their views of the AACC leadership competencies. Their views reveal high expectations for community college presidents and highlight experiences related to the development of these competencies. Practice implications for hiring and developing community college leaders are offered. [ABSTRACT FROM AUTHOR] KW - Core competencies KW - Community college presidents KW - Community college trustees KW - Educational leadership -- United States KW - Community colleges -- United States KW - American Association of Community Colleges N1 - Accession Number: 47132456; Authors:Hassan, Anthony M. 1 Email Address: hassana@usc.edu; Dellow, Donald A. 2; Jackson, Robert J. 3; Affiliations: 1: School of Social Work, University of Southern California, Los Angeles, California, USA; 2: Adult, Career, and Higher Education, University of South Florida, Tampa, Florida, USA; 3: United States Air Force Academy, Colorado Springs, Colorado, USA; Subject: American Association of Community Colleges; Subject: Educational leadership -- United States; Subject: Core competencies; Subject: Community college presidents; Subject: Community college trustees; Subject: Community colleges -- United States; Subject: United States; Subject: New York (State); Subject: Florida; Number of Pages: 19p; Illustrations: 3 Charts; Record Type: Article L3 - 10.1080/10668920903388172 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eft&AN=47132456&site=ehost-live&scope=site DP - EBSCOhost DB - eft ER - TY - JOUR AU - McCabe, JoAnn AU - Wissler, John T1 - A TIME STUDY OF SCIENTISTS & ENGINEERS (S&Es) IN THE AIR VEHICLES DIRECTORATE. JO - Defense AR Journal JF - Defense AR Journal J1 - Defense AR Journal PY - 2010/01// Y1 - 2010/01// VL - 17 IS - 1 M3 - Article SP - 127 EP - 140 SN - 15536408 AB - The article discusses a web-based time study of how scientists and engineers at the Air Force Research Laboratory (AFRL) in the U.S. spend their time on technical compared to non-technical duties. The study was aimed at getting the value and non-added value work hours in a government laboratory to increase productivity. Also included are insights on increasing the technical and value-added time of scientists and engineers to increase productivity. KW - TIME KW - SCIENTISTS KW - ENGINEERS KW - AIR Force Research Laboratory (Edwards Air Force Base, Calif.) KW - LABOR productivity KW - UNITED States N1 - Accession Number: 48498451; Source Information: Jan2010, Vol. 17 Issue 1, p127; Subject Term: TIME; Subject Term: SCIENTISTS; Subject Term: ENGINEERS; Subject Term: AIR Force Research Laboratory (Edwards Air Force Base, Calif.); Subject Term: LABOR productivity; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 13p; ; Illustrations: 1 Diagram, 4 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=48498451&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - CHAP ID - 2008-13470-031 AN - 2008-13470-031 AU - Sellman, Wayne S. AU - Born, Dana H. AU - Strickland, William J. AU - Ross, Jason J. ED - Farr, James L. ED - Tippins, Nancy T. ED - Farr, James L., (Ed) ED - Tippins, Nancy T., (Ed) T1 - Selection and classification in the U.S. military. T2 - Handbook of employee selection. Y1 - 2010/// SP - 679 EP - 704 CY - New York, NY, US PB - Routledge/Taylor & Francis Group SN - 978-0-8058-6437-3 N1 - Accession Number: 2008-13470-031. Partial author list: First Author & Affiliation: Sellman, Wayne S.; Human Resources Research Organization, Alexandria, VA, US. Release Date: 20100809. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 978-0-8058-6437-3, Hardcover. Language: English. Major Descriptor: Military Recruitment; Personnel Recruitment; Personnel Selection. Minor Descriptor: Military Personnel. Classification: Military Psychology (3800); Personnel Management & Selection & Training (3620). Population: Human (10). Location: US. Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 26. AB - This chapter discusses the process of U.S. military recruitment. The U.S. Department of Defense (DoD) is the world's largest employer of young people. Depending on personnel requirements, the DoD screens hundreds of thousands of youth for enlistment annually. During the late 1970's, the DoD screened approximately 1 million applicants each year; that number declined to 'only' about 500,000 during the first years of the 21st century. As noted above, the military's task in screening potential recruits is complicated by the fact that the available personnel pool is composed predominately of young men and women who have never held a permanent full-time job. Consequently, the services must depend mainly on indicators of potential performance such as aptitude and levels of education. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - U.S. military selection & classification KW - military enlistment KW - employer KW - 2010 KW - Military Recruitment KW - Personnel Recruitment KW - Personnel Selection KW - Military Personnel KW - 2010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-13470-031&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2010-09400-013 AN - 2010-09400-013 AU - Matthews, Gerald AU - Warm, Joel S. AU - Reinerman, Lauren E. AU - Langheim, Lisa K. AU - Saxby, Dyani J. ED - Gruszka, Aleksandra ED - Matthews, Gerald ED - Szymura, Bɫażej ED - Gruszka, Aleksandra, (Ed) ED - Matthews, Gerald, (Ed) ED - Szymura, Bɫażej, (Ed) T1 - Task engagement, attention, and executive control. T2 - Handbook of individual differences in cognition: Attention, memory, and executive control. T3 - The Springer series on human exceptionality Y1 - 2010/// SP - 205 EP - 230 CY - New York, NY, US PB - Springer Science + Business Media SN - 978-1-4419-1209-1 SN - 978-1-4419-1210-7 AD - Matthews, Gerald, Department of Psychology, University of Cincinnati, Cincinnati, OH, US, 45221 N1 - Accession Number: 2010-09400-013. Partial author list: First Author & Affiliation: Matthews, Gerald; Department of Psychology, University of Cincinnati, Cincinnati, OH, US. Release Date: 20100906. Correction Date: 20161117. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 978-1-4419-1209-1, Hardcover; 978-1-4419-1210-7, PDF. Language: English. Major Descriptor: Attention; Individual Differences; Involvement; Physiological Arousal; Executive Function. Minor Descriptor: Performance; Self-Regulation. Classification: Cognitive Processes (2340). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 26. AB - We began this chapter by advancing the simple proposition that individual differences in energetic arousal provide a marker for attentional resource availability, consistent with the Humphreys and Revelle (1984) performance theory. Recent research allows this hypothesis to be elaborated in several respects. First, energy is one facet of a broader subjective state factor of task engagement that binds elevated mood to performance motivations and concentration. Second, the relationship between subjective task engagement and information processing is bi-directional, and both paths are regulated by executive processing. Changes in engagement reflect self-regulative processes including appraisal and coping, consistent with existing cognitive theories of affect (e.g., Carver & Scheier, in press). Conversely, individual differences in engagement influence executive control over attention. Like energy, high engagement functions as a marker for resource availability, but its effects may also be mediated by task-focused coping and effort. Third, theoretical accounts of the interplay between engagement and attention require multi-leveled explanations in line with a cognitive science understanding of stress (Matthews, 2000, 2001). The account here acknowledges the importance of the neurological architecture for attention and approach motivation, but focused primarily on self-regulative processes. We have proposed that executive systems include a 'task-relevant' mode that interacts with self-knowledge and lower-level processing networks in maintaining task-directed effort and commitment. Subjective engagement signals the intervention of executive processing in maintaining progress toward personally-important task goals. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - task engagement KW - energetic arousal KW - attention KW - executive control KW - self regulation KW - individual differences KW - performance KW - 2010 KW - Attention KW - Individual Differences KW - Involvement KW - Physiological Arousal KW - Executive Function KW - Performance KW - Self-Regulation KW - 2010 U1 - Sponsor: US Army Medical Research and Material Command, US. Grant: DAMD17-04-C-0002. Recipients: No recipient indicated DO - 10.1007/978-1-4419-1210-7_13 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-09400-013&site=ehost-live&scope=site UR - gerald.matthews@uc.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Selmic, Rastko R. AU - Mitra, Atindra AU - Challa, Shravan AU - Simicevic, Neven T1 - Ultra-Wideband Signal Propagation Experiments in Liquid Media. JO - IEEE Transactions on Instrumentation & Measurement JF - IEEE Transactions on Instrumentation & Measurement J1 - IEEE Transactions on Instrumentation & Measurement PY - 2010/01// Y1 - 2010/01// VL - 59 IS - 1 M3 - Article SP - 215 EP - 220 SN - 00189456 AB - Ultra-wideband (UWB) signals exhibit different characteristics upon propagation through matter compared with narrow-band signals. The latter keeps a sinusoidal shape during different forms of signal propagation. The behavior of narrow- band signals does not apply to UWB signals in many cases. Presently, the possibilities for development of UWB signaling technology remain largely unexplored. Few applications have been developed due to strict regulations by the Federal Communications Commission (FCC). In this paper, we describe a series of experiments that have been carried out to determine the behavior of UWB signals and their properties. A transverse electromagnetic (TEM) horn antenna has been made for radiating UWB signals. A procedure for propagating UWB signals through a liquid medium of given salt concentration has been demonstrated, providing a basis for studying UWB signal propagation in biological matter. A new pulsewidth definition was adopted, which is suitable for propagated UWB signals. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Instrumentation & Measurement is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRA-wideband devices KW - ELECTROMAGNETIC devices KW - SIGNALS & signaling KW - FEDERAL Communications Bar Association (U.S.) KW - UNITED States. Defense Advanced Research Projects Agency KW - UNITED States N1 - Accession Number: 47838368; Source Information: Jan2010, Vol. 59 Issue 1, p215; Subject Term: ULTRA-wideband devices; Subject Term: ELECTROMAGNETIC devices; Subject Term: SIGNALS & signaling; Subject Term: FEDERAL Communications Bar Association (U.S.); Subject Term: UNITED States. Defense Advanced Research Projects Agency; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 6p; ; Illustrations: 5 Diagrams, 7 Graphs; ; Document Type: Article; L3 - 10.1109/TIM.2009.2022452 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=47838368&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Parker, David R. AU - Gustafson, Steven C. AU - Oxley, Mark E. AU - Ross, Timothy D. T1 - Development of a Bayesian Framework for Determining Uncertainty in' Receiver Operating Characteristic Curve Estimates. JO - IEEE Transactions on Knowledge & Data Engineering JF - IEEE Transactions on Knowledge & Data Engineering J1 - IEEE Transactions on Knowledge & Data Engineering PY - 2010/01// Y1 - 2010/01// VL - 22 IS - 1 M3 - Article SP - 31 EP - 45 SN - 10414347 AB - This research uses a Bayesian framework to develop probability densities for the receiver operating characteristic (ROC) curve. The ROC curve is a discrimination metric that may be used to quantify how well a detection system classifies targets and nontargets. The degree of uncertainty in ROC curve formulation is a concern that previous research has not adequately addressed. This research formulates a probability density for the ROC curve and characterizes its uncertainty using confidence bands. Methods for the generation and characterization of the probability densities of the ROC curve are specified and demonstrated, where the initial analysis employs beta densities to model target and nontarget samples of detection system output. For given target and nontarget data, given functional forms of the data densities (such as beta density forms) and given prior densities of the form parameters, the methods developed here provide exact performance metric probability densities. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Knowledge & Data Engineering is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RECEIVER operating characteristic curves KW - SIGNAL detection KW - METRIC projections KW - PERFORMANCE evaluation KW - BAYESIAN field theory KW - MANAGEMENT science N1 - Accession Number: 47911611; Source Information: Jan2010, Vol. 22 Issue 1, p31; Subject Term: RECEIVER operating characteristic curves; Subject Term: SIGNAL detection; Subject Term: METRIC projections; Subject Term: PERFORMANCE evaluation; Subject Term: BAYESIAN field theory; Subject Term: MANAGEMENT science; Subject Term: ; Number of Pages: 15p; ; Document Type: Article; L3 - 10.1109/TKDE.2009.50 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=47911611&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Pu Wang AU - Hongbin Li AU - Himed, Braham T1 - A New Parametric GLRT for Multichannel Adaptive Signal Detection. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing J1 - IEEE Transactions on Signal Processing PY - 2010/01// Y1 - 2010/01// VL - 58 IS - 1 M3 - Article SP - 317 EP - 325 SN - 1053587X AB - A parametric generalized likelihood ratio test (GLRT) for multichannel signal detection in spatially and temporally colored disturbance was recently introduced by modeling the disturbance as a multichannel autoregressive (AR) process. The detector, however, involves a highly nonlinear maximum likelihood estimation procedure, which was solved via a two-dimensional iterative search method initialized by a suboptimal estimator. In this paper, we present a simplified GLRT along with a new estimator for the problem. Both the estimator and the GLRT are derived in closed form at considerably lower complexity. With adequate training data, the new GLRT achieves a similar detection performance as the original one. However, for the more interesting case of limited training, the original GLRT may become inferior due to poor initialization. Because of its simpler form, the new GLRT also offers additional insight into the parametric multichannel signal detection problem. The performance of the proposed detector is assessed using both a simulated dataset, which was generated using multichannel AR models, and the KASSPER dataset, a widely used dataset with challenging heterogeneous effects found in real-world environments. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIGNAL detection KW - ADAPTIVE signal processing KW - PARAMETRIC devices KW - DETECTORS KW - COMPUTATIONAL complexity N1 - Accession Number: 47843653; Source Information: Jan2010, Vol. 58 Issue 1, p317; Subject Term: SIGNAL detection; Subject Term: ADAPTIVE signal processing; Subject Term: PARAMETRIC devices; Subject Term: DETECTORS; Subject Term: COMPUTATIONAL complexity; Subject Term: ; Number of Pages: 9p; ; Document Type: Article; L3 - 10.1109/TSP.2009.2030835 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=47843653&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Cizmas, Paul G. A. AU - Gargoloff, Joaquin I. AU - Strganac, Thomas W. AU - Beran, Philip S. T1 - Parallel Multigrid Algorithm for Aeroelasticity Simulations. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2010/01//Jan/Feb2010 Y1 - 2010/01//Jan/Feb2010 VL - 47 IS - 1 M3 - Article SP - 53 EP - 53 SN - 00218669 AB - This paper presents the development of a multigrid parallel algorithm for a nonlinear aeroelastic analysis. The aeroelastic model consists of 1) a nonlinear structural model that captures in-plane, out-of-plane, and torsional couplings; 2) an unsteady viscous aerodynamic model that captures compressible flow effects for transonic flows with shock/boundary-layer interaction; and 3) a solution methodology that assures a tightly coupled solution of the nonlinear structure and the fluid flow, including a consistent geometric interface between the highly deforming structure and the flowfield. A domain-decomposition parallel computation algorithm based on a message-passing interface was developed for the flow solver. A three-level multigrid algorithm was implemented in the flow solver to further reduce the computational time. A grid generation and deformation algorithm was developed concurrently with the flowsolver in order to improve the efficiency of the computation. The grid deformation methodology kept the mesh topology unchanged as the structure deformed. Consequently, it was not necessary for either the parallel computation or the multigrid algorithm to update their communication pointers while the structure deformed. The validation of the numerical solver was done using experimental results of the F-5 wing. The aeroelastic solver was then used to assess the effect of structural nonlinearities on the aeroelastic response of the heavy Goland wing. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - AEROELASTICITY KW - STRUCTURAL frames -- Models KW - NONLINEAR models (Statistics) KW - PLANE geometry KW - COUPLINGS (Gearing) N1 - Accession Number: 48549085; Source Information: Jan/Feb2010, Vol. 47 Issue 1, p53; Subject Term: ALGORITHMS; Subject Term: AEROELASTICITY; Subject Term: STRUCTURAL frames -- Models; Subject Term: NONLINEAR models (Statistics); Subject Term: PLANE geometry; Subject Term: COUPLINGS (Gearing); Subject Term: ; Number of Pages: 1p; ; Document Type: Article; L3 - 10.2514/1.40201 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=48549085&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Riemenschneider, L. AU - Woo, M.-H. AU - Wu, C.-Y. AU - Lundgren, D. AU - Wander, J. AU - Lee, J.-H. AU - Li, H.-W. AU - Heimbuch, B. T1 - Characterization of reaerosolization from impingers in an effort to improve airborne virus sampling. JO - Journal of Applied Microbiology JF - Journal of Applied Microbiology Y1 - 2010/01// VL - 108 IS - 1 M3 - Article SP - 315 EP - 324 PB - Wiley-Blackwell SN - 13645072 AB - Aims: To assess the impact of reaerosolization from liquid impingement methods on airborne virus sampling. Methods and Results: An AGI-30 impinger containing particles [MS2 bacteriophage or 30-nm polystyrene latex (PSL)] of known concentration was operated with sterile air. Reaerosolized particles as a function of sampling flow rate and particle concentration in the impinger collection liquid were characterized using a scanning mobility particle sizer. Reaerosolization from the impinger was also compared to that from a BioSampler. Results show that reaerosolization increases as flow rate increases. While the increased particle concentration in the impinger collection liquid leads to an increase in the reaerosolization of PSL particles, it does not necessarily lead to an increase in the reaerosolization of virus particles. Reaerosolization of virus particles begins to decrease as the particle concentration in the impinger collection liquid rises above 106 PFU ml−1. This phenomenon results from aggregation of viral particles at high concentrations. Compared with micron-sized particles, nanosized virus particles are easier to aerosolize because of reduced inertia. Reaerosolization from the BioSampler is demonstrated to be significantly less than that from the impinger. Conclusions: Reaerosolization from impingement sampling methods is a mode of loss in airborne virus sampling, although it is not as significant a limitation as the primary particle size of the aerosol. Utilizing a BioSampler coupled with short sampling periods to prevent high accumulative concentrations can minimize the impact of reaerosolization. Significance and Impact of the Study: This study confirms reaerosolization of virus particles to be a mode of loss in impingement sampling and identifies methods to minimize the loss. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Microbiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Viruses KW - Bacteriophages KW - Polystyrene KW - Particles KW - Liquids KW - Microorganisms KW - Sampling (Process) KW - Latex KW - Inertia (Mechanics) KW - aggregation KW - impinger KW - reaerosolization KW - sampling KW - virus N1 - Accession Number: 45717768; Riemenschneider, L. 1; Woo, M.-H. 1; Wu, C.-Y. 1; Email Address: cywu@ufl.edu; Lundgren, D. 1; Wander, J. 2; Lee, J.-H. 1; Li, H.-W. 1; Heimbuch, B. 2; Affiliations: 1: Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL, USA.; 2: Air Force Research Laboratory, Tyndall Air Force Base, FL, USA.; Issue Info: Jan2010, Vol. 108 Issue 1, p315; Thesaurus Term: Viruses; Thesaurus Term: Bacteriophages; Thesaurus Term: Polystyrene; Thesaurus Term: Particles; Thesaurus Term: Liquids; Thesaurus Term: Microorganisms; Subject Term: Sampling (Process); Subject Term: Latex; Subject Term: Inertia (Mechanics); Author-Supplied Keyword: aggregation; Author-Supplied Keyword: impinger; Author-Supplied Keyword: reaerosolization; Author-Supplied Keyword: sampling; Author-Supplied Keyword: virus; NAICS/Industry Codes: 326140 Polystyrene Foam Product Manufacturing; Number of Pages: 10p; Illustrations: 2 Diagrams, 3 Charts, 3 Graphs; Document Type: Article L3 - 10.1111/j.1365-2672.2009.04425.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=45717768&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 105290268 T1 - Deaths in custody: are some due to electronic control devices (including TASER(R) devices) or excited delirium? AU - Jauchem JR Y1 - 2010/01// N1 - Accession Number: 105290268. Language: English. Entry Date: 20100423. Revision Date: 20150711. Publication Type: Journal Article; review. Journal Subset: Biomedical; Europe; UK & Ireland. NLM UID: 101300022. KW - Delirium -- Mortality KW - Delirium -- Physiopathology KW - Electroconvulsive Therapy KW - Electroconvulsive Therapy -- Equipment and Supplies KW - Prisoners KW - Acidosis -- Physiopathology KW - Animals KW - Cause of Death KW - Confounding Variable KW - Fever -- Physiopathology KW - Forensic Medicine KW - Lactic Acid -- Blood KW - Muscle Contraction -- Physiology KW - Myoglobin -- Blood KW - Nomenclature KW - Pathology KW - Police KW - Posture -- Physiology KW - Potassium -- Blood KW - Respiration KW - Restraint, Physical KW - Rhabdomyolysis -- Physiopathology KW - Substance Use Disorders -- Physiopathology KW - Sympathetic Nervous System -- Physiopathology KW - Ventricular Fibrillation -- Physiopathology SP - 1 EP - 7 JO - Journal of Forensic & Legal Medicine JF - Journal of Forensic & Legal Medicine JA - J FORENSIC LEGAL MED VL - 17 IS - 1 CY - New York, New York PB - Elsevier Science SN - 1752-928X AD - US Air Force Research Laboratory, Human Effectiveness Directorate, Directed Energy Bioeffects Division, 8262 Hawks Road, Brooks City-Base, TX 78235, USA. U2 - PMID: 20083043. DO - 10.1016/j.jflm.2008.05.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105290268&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - CHAP ID - 2010-22147-008 AN - 2010-22147-008 AU - Boyce, Lisa A. AU - Hernez-Broome, Gina ED - Clutterbuck, David ED - Hussain, Zulfi ED - Clutterbuck, David, (Ed) ED - Hussain, Zulfi, (Ed) T1 - E-coaching: Consideration of leadership coaching in a virtual environment. T2 - Virtual coach, virtual mentor. Y1 - 2010/// SP - 139 EP - 174 CY - Charlotte, NC, US PB - IAP Information Age Publishing SN - 978-1-60752-308-6 SN - 978-1-60752-309-3 SN - 978-1-60752-310-9 N1 - Accession Number: 2010-22147-008. Partial author list: First Author & Affiliation: Boyce, Lisa A.; Behavioral Science Information Technology Applications Research, United States Air Force Academy, Air Force Academy, CO, US. Release Date: 20110110. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-1-60752-308-6, Paperback; 978-1-60752-309-3, Hardcover; 978-1-60752-310-9, PDF. Language: English. Major Descriptor: Electronic Communication; Leadership; Executive Coaching. Classification: Management & Management Training (3640). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 36. AB - Leadership coaching is an accepted and widely popular method for developing leaders. In order to meet the growth in interest and expanding needs of clients, coaches and coaching organizations are looking for alternatives to traditional face-to-face coaching, including the integration of technology into their programs. Unfortunately, technology supported practices have outpaced the research supporting guidance on how best to manage and support virtual coaching. In order to meet this need, this chapter presents a framework to highlight the critical issues and alternative considerations for coaching within an e-environment. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - e-coaching KW - leadership coaching KW - virtual environment KW - virtual coaching KW - 2010 KW - Electronic Communication KW - Leadership KW - Executive Coaching KW - 2010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-22147-008&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Donovan, John T1 - The Cold War U.S. Army: Building Deterrence for Limited War. JO - War in History JF - War in History J1 - War in History PY - 2010/01// Y1 - 2010/01// VL - 17 IS - 1 M3 - Book Review SP - 128 EP - 129 PB - Sage Publications, Ltd. SN - 09683445 AB - The article reviews the book "The Cold War U.S. Army: Building Deterrence for Limited War," by Ingo Trauschweizer. KW - COLD War US Army: Building Deterrence for Limited War, The (Book) KW - TRAUSCHWEIZER, Ingo KW - UNITED States. Army -- History KW - NONFICTION N1 - Accession Number: 47490015; Source Information: Jan2010, Vol. 17 Issue 1, p128; Subject Term: COLD War US Army: Building Deterrence for Limited War, The (Book); Subject Term: TRAUSCHWEIZER, Ingo; Subject Term: UNITED States. Army -- History; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=47490015&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2010-08382-006 AN - 2010-08382-006 AU - Drasgow, Fritz AU - Nye, Christopher D. AU - Carretta, Thomas R. AU - Ree, Malcolm James T1 - Factor structure of the Air Force Officer Qualifying Test Form S: Analysis and comparison with previous forms. JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2010/01// VL - 22 IS - 1 SP - 68 EP - 85 CY - United Kingdom PB - Taylor & Francis SN - 0899-5605 SN - 1532-7876 AD - Drasgow, Fritz, Department of Psychology, University of Illinois, 603 E. Daniel St., Champaign, IL, US, 61820 N1 - Accession Number: 2010-08382-006. Partial author list: First Author & Affiliation: Drasgow, Fritz; University of Illinois at Urbana–Champaign, Champaign, IL, US. Other Publishers: Educational Publishing Foundation; Lawrence Erlbaum. Release Date: 20100712. Correction Date: 20140811. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Factor Structure; Human Sex Differences; Intelligence; Racial and Ethnic Groups. Classification: Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 18. Issue Publication Date: Jan, 2010. Copyright Statement: Taylor & Francis Group, LLC AB - Due to its importance for assignment and classification in the U.S. Air Force, the Air Force Officer Qualifying Test (AFOQT) has received a substantial amount of research. Recently, the AFOQT was revised to reduce administrative burden and test-taker fatigue. However, the new version, the AFOQT Form S, was implemented without explicitly examining the latent structure of the exam. The current study examined the factor structure of Form S as well as its measurement equivalence across race- and sex-based groups. Results indicated that a bifactor model with a general intelligence factor and five content-specific factors fit the best. The measurement equivalence of the AFOQT across gender and racial/ethnic groups was also supported. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - factor structure KW - Air Force Officer Qualifying Test Form S KW - race-based groups KW - sex-based groups KW - intelligence KW - 2010 KW - Air Force Personnel KW - Factor Structure KW - Human Sex Differences KW - Intelligence KW - Racial and Ethnic Groups KW - 2010 U1 - Sponsor: US Air Force, US. Other Details: EASI. Recipients: No recipient indicated DO - 10.1080/08995600903249255 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-08382-006&site=ehost-live&scope=site UR - fdrasgow@uiuc.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-05450-003 AN - 2010-05450-003 AU - Wells, Timothy S. AU - LeardMann, Cynthia A. AU - Fortuna, Sarah O. AU - Smith, Besa AU - Smith, Tyler C. AU - Ryan, Margaret A. K. AU - Boyko, Edward J. AU - Blazer, Dan T1 - A prospective study of depression following combat deployment in support of the wars in Iraq and Afghanistan. JF - American Journal of Public Health JO - American Journal of Public Health JA - Am J Public Health Y1 - 2010/01/01/ VL - 100 IS - 1 SP - 90 EP - 99 CY - US PB - American Public Health Assn SN - 0090-0036 SN - 1541-0048 AD - Wells, Timothy S., 711th HPW/RHPA, Building 824 Room 206, 2800 Q St, Wright-Patterson AFB, OH, US, 45433-7947 N1 - Accession Number: 2010-05450-003. PMID: 19910353 Partial author list: First Author & Affiliation: Wells, Timothy S.; US Air Force Research Laboratory, Wright-Patterson AFB, OH, US. Institutional Authors: Millennium Cohort Study Team. Release Date: 20100719. Correction Date: 20140120. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Combat Experience; Major Depression; Military Deployment; Onset (Disorders); War. Minor Descriptor: Prospective Studies. Classification: Affective Disorders (3211); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: Afghanistan; Iraq. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Primary Care Evaluation of Mental Disorders Patient Health Questionnaire; CAGE Questionnaire DOI: 10.1037/t01522-000; PTSD Checklist—Civilian Version DOI: 10.1037/t02622-000. Methodology: Empirical Study; Longitudinal Study; Prospective Study; Qualitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Jan 1, 2010. Publication History: Accepted Date: Apr 12, 2009. AB - Objective: We investigated relations between deployment and new-onset depression among US service members recently deployed to the wars in Iraq and Afghanistan. Methods: We included 40 219 Millennium Cohort Study participants who completed baseline and follow-up questionnaires and met inclusion criteria. Participants were identified with depression if they met the Primary Care Evaluation of Mental Disorders Patient Health Questionnaire criteria for depression at follow-up, but not at baseline. Results: Deployed men and women with combat exposures had the highest onset of depression, followed by those not deployed and those deployed without combat exposures. Combat-deployed men and women were at increased risk for new-onset depression compared with nondeployed men and women (men: adjusted odds ratio [AOR] = 1.32; 95% confidence interval [CI] = 1.13, 1.54; women: AOR = 2.13; 95% CI = 1.70, 2.65). Conversely, deployment without combat exposures led to decreased risk for new-onset depression compared with those who did not deploy (men: AOR = 0.66; 95% CI = 0.53, 0.83; women: AOR = 0.65; 95% CI = 0.47, 0.89). Conclusions: Deployment with combat exposures is a risk factor for new-onset depression among US service members. Post-deployment screening may be beneficial for US service members exposed to combat. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - prospective studies KW - depression KW - combat deployment KW - wars KW - Iraq KW - Afghanistan KW - disease onset KW - 2010 KW - Combat Experience KW - Major Depression KW - Military Deployment KW - Onset (Disorders) KW - War KW - Prospective Studies KW - 2010 DO - 10.2105/AJPH.2008.155432 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-05450-003&site=ehost-live&scope=site UR - timothy.wells@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-06085-003 AN - 2010-06085-003 AU - Duong, Diep N. T1 - The evidence-based practice concept: Engaging interest and participation. JF - Nursing Research JO - Nursing Research JA - Nurs Res Y1 - 2010/01//Jan-Feb, 2010 VL - 59 IS - Suppl 1 SP - S7 EP - S10 CY - US PB - Lippincott Williams & Wilkins SN - 0029-6562 SN - 1538-9847 AD - Duong, Diep N., United States Air Force, 4725 Bougainville Dr. #331, Honolulu, HI, US, 96818 N1 - Accession Number: 2010-06085-003. Partial author list: First Author & Affiliation: Duong, Diep N.; United States Air Force, Honolulu, HI, US. Release Date: 20100726. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Kelley, CAPT Patricia. Major Descriptor: Evidence Based Practice; Health Care Services; Military Personnel; Nursing. Minor Descriptor: Military Deployment. Classification: Health & Mental Health Services (3370); Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 4. Issue Publication Date: Jan-Feb, 2010. Publication History: Accepted Date: Jul 1, 2009. Copyright Statement: Lippincott Williams & Wilkins. 2010. AB - The TriService Nursing Research Program was chartered in 1992 to advance the science of military nursing to support mission readiness, to provide optimal evidence-based healthcare in various military settings, and to improve the health and quality of life of military personnel. In 2002, the Tri-Service Nursing Research Program created the evidence-based practice initiative to foster excellence in military nursing care through the evidence-based practice in the military healthcare system. The evidence-based practice initiative has been coherently and successfully implemented throughout the military healthcare systems largely due to strong commitment and support from all management levels across services and across components. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - evidence based practice KW - military personnel KW - nursing KW - health care services KW - mission readiness KW - 2010 KW - Evidence Based Practice KW - Health Care Services KW - Military Personnel KW - Nursing KW - Military Deployment KW - 2010 U1 - Sponsor: TriService Nursing Research Program. Grant: N03-P18. Recipients: Kelley, CAPT Patricia (Prin Inv) DO - 10.1097/NNR.0b013e3181c3be98 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-06085-003&site=ehost-live&scope=site UR - duongdn@state.gov DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-09699-009 AN - 2010-09699-009 AU - Hoffman, Stuart W. AU - Shesko, Kristina AU - Harrison, Catherine R. T1 - Enhanced neurorehabilitation techniques in the DVBIC Assisted Living Pilot Project. JF - NeuroRehabilitation JO - NeuroRehabilitation JA - NeuroRehabilitation Y1 - 2010/// VL - 26 IS - 3 SP - 257 EP - 269 CY - Netherlands PB - IOS Press SN - 1053-8135 SN - 1878-6448 AD - Hoffman, Stuart W., Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Defense and Veterans Brain Injury Center – Johnstown DVBIC/ DCoE, 109 Sunray Drive, Johnstown, PA, US, 15905 N1 - Accession Number: 2010-09699-009. PMID: 20448315 Partial author list: First Author & Affiliation: Hoffman, Stuart W.; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Defense and Veterans Brain Injury Center – Johnstown DVBIC/ DCoE, Johnstown, PA, US. Release Date: 20100628. Correction Date: 20160428. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Continuum of Care; Traumatic Brain Injury; Neurorehabilitation. Classification: Rehabilitation (3380); Military Psychology (3800). Population: Human (10). Location: US. References Available: Y. Page Count: 13. Issue Publication Date: 2010. Copyright Statement: All rights reserved. IOS Press and the authors. 2010. AB - Traumatic Brain Injury has been labeled the 'silent epidemic' in our current wars. Both CBO and the RAND reports predict that the costs of these injuries will be both extensive and enduring. The projected costs are based not only upon the loss contribution of these warriors to our economy, but also the long-term medical and assistive care that will be needed to support these veterans for decades to come. Thus, the primary goal of the Assisted Living Pilot Project (ALPP) at the Defense and Veterans Brain Injury Center—Johnstown (DVBIC-J) is to promote the ability of the injured warrior to move from assisted living to living independently and to be self-supporting by providing a continuum of care. To accomplish this goal the DVBIC-J ALPP is providing full set of traditional services (physical, occupational, speech, psychological/cognitive, social/familial, vocational, and spiritual), along with 'cutting-edge' rehabilitative treatment technologies. These cutting-edge therapies include transdisciplinary clinical consultations, interactive patient and family counseling, and telemedicine-teleconferencing for clinical evaluations and family/significant other care participation. These services will be available to those who require assisted living through their progression to community re-entry. The ALPP also serves as a vehicle for clinical trials to investigate the effects of an enriched environment (e.g., recreational therapies, massage, multisensory stimulation, etc.) on neurorehabilitation therapy, rural telemedicine for servicemembers with traumatic brain injury, and long-term outcome measures of those who have received neurorehabilitation services at the DVBIC-J site. DVBIC-J is also developing collaborative projects with universities and private industry to create an incubator for new rehabilitation technologies. The technologies that DVBIC-J will be focusing on will include assistive technologies (to assist cognitive, physical, and communicative impairments), virtual and augmented reality simulations (for both diagnosis and treatment of TBI and PTSD), and telecommunication technologies to improve rehabilitation services to those warriors that have returned to their homes in rural areas. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - neurorehabilitation techniques KW - DVBIC Assisted Living Pilot Project KW - traumatic brain injuries KW - continuum of care KW - 2010 KW - Continuum of Care KW - Traumatic Brain Injury KW - Neurorehabilitation KW - 2010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-09699-009&site=ehost-live&scope=site UR - ELISABETH.MARTIN@us.army.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Burton, Anthony C. AU - Carson, Katherine S. AU - Chilton, Susan M. AU - Hutchinson, W. George T1 - Why do people non-demand reveal in hypothetical double referenda for public goods? JO - Applied Economics JF - Applied Economics Y1 - 2009/12/20/ VL - 41 IS - 27 M3 - Article SP - 3561 EP - 3569 PB - Routledge SN - 00036846 AB - Hypothetical contingent valuation surveys used to elicit values for environmental and other public goods often employ variants of the referendum mechanism due to the cognitive simplicity and familiarity of respondents with this voting format. One variant, the double referendum mechanism, requires respondents to state twice how they would vote for a given policy proposal given their cost of the good. Data from these surveys often exhibit anomalies inconsistent with standard economic models of consumer preferences. There are a number of published explanations for these anomalies, mostly focusing on problems with the second vote. This article investigates which aspects of the hypothetical task affect the degree of nondemand revelation and takes an individual-based approach to identifying people most likely to non-demand reveal. A clear profile emerges from our model of a person who faces a negative surplus i.e. a net loss in the second vote and invokes non self-interested, non financial motivations during the decision process. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Economics is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PUBLIC goods KW - CONSUMERS' preferences KW - ECONOMETRIC models KW - DECISION making KW - VOTING KW - REFERENDUM N1 - Accession Number: 45222161; Burton, Anthony C. 1; Carson, Katherine S. 2; Chilton, Susan M. 3; Email Address: s.m.chilton@ncl.ac.uk; Hutchinson, W. George 4; Affiliations: 1: Ministry of Social Development, New Zealand; 2: Department of Economics and Geography, United States Air Force Academy, HQ USAFA/DFEG, 2354 Fairchild Drive, Ste. 6K110, USAF Academy, CO 80840-6299, USA; 3: University of Newcastle upon Tyne Business School -- Economics Ridley Building, Queen Victoria Road, Newcastle upon Tyne, UK, NE1 7RU, UK; 4: Gibson Institute of Land, Food and the Environment, Queen's University Belfast, Northern Ireland, BT9 5PX, UK; Issue Info: Dec2009, Vol. 41 Issue 27, p3561; Thesaurus Term: PUBLIC goods; Thesaurus Term: CONSUMERS' preferences; Thesaurus Term: ECONOMETRIC models; Thesaurus Term: DECISION making; Subject Term: VOTING; Subject Term: REFERENDUM; Number of Pages: 9p; Illustrations: 1 Diagram, 4 Charts; Document Type: Article L3 - 10.1080/00036840701537802 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=45222161&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Posgai, Ryan AU - Ahamed, Maqusood AU - Hussain, Saber M. AU - Rowe, John J. AU - Nielsen, Mark G. T1 - Inhalation method for delivery of nanoparticles to the Drosophila respiratory system for toxicity testing JO - Science of the Total Environment JF - Science of the Total Environment Y1 - 2009/12/20/ VL - 408 IS - 2 M3 - Article SP - 439 EP - 443 SN - 00489697 AB - Abstract: The growth of the nanotechnology industry and subsequent proliferation of nanoparticle types present the need to rapidly assess nanoparticle toxicity. We present a novel, simple and cost-effective nebulizer-based method to deliver nanoparticles to the Drosophila melanogaster respiratory system, for the purpose of toxicity testing. FluoSpheres®, silver, and CdSe/ZnS nanoparticles of different sizes were effectively aerosolized, showing the system is capable of functioning with a wide range of nanoparticle types and sizes. Red fluorescent CdSe/ZnS nanoparticles were successfully delivered to the fly respiratory system, as visualized by fluorescent microscopy. Silver coated and uncoated nanoparticles were delivered in a toxicity test, and induced Hsp70 expression in flies, confirming the utility of this model in toxicity testing. This is the first method developed capable of such delivery, provides the advantage of the Drosophila health model, and can serve as a link between tissue culture and more expensive mammalian models in a tiered toxicity testing strategy. [Copyright &y& Elsevier] AB - Copyright of Science of the Total Environment is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSIOLOGY KW - Toxicity testing KW - Drosophila KW - Animal models in research KW - Nanoparticles KW - Respiratory organs KW - Nanostructured materials industry KW - Tissue culture KW - Fluorescence microscopy KW - Hsp70 KW - Inhalation model KW - Nanoparticle KW - Nanotoxicity N1 - Accession Number: 45216085; Posgai, Ryan 1; Ahamed, Maqusood 1; Hussain, Saber M. 2; Rowe, John J. 1; Nielsen, Mark G. 1; Email Address: Mark.Nielsen@notes.udayton.edu; Affiliations: 1: Department of Biology, University of Dayton, Dayton, OH, 45469-2320 USA; 2: Applied Biotechnology Branch, Human Effectiveness Directorate Air Force Research Laboratory/RHBP, Wright-Patterson Air Force Base, OH, 45433 USA; Issue Info: Dec2009, Vol. 408 Issue 2, p439; Thesaurus Term: PHYSIOLOGY; Thesaurus Term: Toxicity testing; Thesaurus Term: Drosophila; Thesaurus Term: Animal models in research; Subject Term: Nanoparticles; Subject Term: Respiratory organs; Subject Term: Nanostructured materials industry; Subject Term: Tissue culture; Subject Term: Fluorescence microscopy; Author-Supplied Keyword: Hsp70; Author-Supplied Keyword: Inhalation model; Author-Supplied Keyword: Nanoparticle; Author-Supplied Keyword: Nanotoxicity; NAICS/Industry Codes: 111421 Nursery and Tree Production; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.scitotenv.2009.10.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=45216085&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Spicer, Chester W. AU - Holdren, Michael W. AU - Cowen, Kenneth A. AU - Joseph, Darrell W. AU - Satola, Jan AU - Goodwin, Bradley AU - Mayfield, Howard AU - Laskin, Alexander AU - Alexander, M. Lizabeth AU - Ortega, John V. AU - Newburn, Matthew AU - Kagann, Robert AU - Hashmonay, Ram T1 - Corrigendum to “Rapid measurement of emissions from military aircraft turbine engines by downstream extractive sampling of aircraft on the ground: Results for C-130 and F-15 aircraft” [Atm. Environ. 43 (2009) 2612–2622] JO - Atmospheric Environment JF - Atmospheric Environment Y1 - 2009/12/11/ VL - 43 IS - 38 M3 - Correction notice SP - 6120 EP - 6120 SN - 13522310 N1 - Accession Number: 45134620; Spicer, Chester W. 1; Email Address: spiceair@columbus.rr.com; Holdren, Michael W. 2; Cowen, Kenneth A. 3; Joseph, Darrell W. 3; Satola, Jan 3; Goodwin, Bradley 3; Mayfield, Howard 4; Laskin, Alexander 5; Alexander, M. Lizabeth 5; Ortega, John V. 6; Newburn, Matthew 5; Kagann, Robert 7; Hashmonay, Ram 7; Affiliations: 1: SpiceAir Consulting, 2703 Mt. Holyoke Rd., Columbus, OH 43221, USA; 2: Scientific Consulting, 4781 Teter Ct., Columbus, OH 43220, USA; 3: Battelle, 505 King Ave., Columbus, OH 43201, USA; 4: Air Force Research Laboratory, 139 Barnes Dr., Tyndall AFB, FL 32403, USA; 5: Environmental Molecular Science Laboratory, Pacific Northwest National Laboratory, 902 Battelle Blvd., Richland, WA 99352, USA; 6: University of Colorado, Boulder, CO 80309, USA; 7: Arcadis G&M, Durham, NC 27713, USA; Issue Info: Dec2009, Vol. 43 Issue 38, p6120; Number of Pages: 1p; Document Type: Correction notice L3 - 10.1016/j.atmosenv.2009.02.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=45134620&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Murray, John Stephen T1 - Public Health Emergencies and Children: New guidelines offer an opportunity to be better prepared. JO - American Journal of Nursing JF - American Journal of Nursing Y1 - 2009/12// VL - 109 IS - 12 M3 - Article SP - 28 EP - 31 SN - 0002936X AB - The article describes guidelines issued by the U.S. Agency for Healthcare Research and Quality (AHRQ) addressing the needs of children during a public health emergency or national disaster. Children are at a greater risk for physical injury during a disaster as a result of their anatomical and physiological differences. They are also more vulnerable to psychosocial damage after a disaster due to cognitive and developmental factors which make it difficult for them to understand what is occurring. KW - PUBLIC health -- United States KW - UNITED States. Agency for Healthcare Research & Quality KW - CHILDREN -- Health -- Government policy KW - PEDIATRIC emergencies KW - NATURAL disasters -- Physiological aspects KW - EMERGENCY management KW - UNITED States N1 - Accession Number: 46794610; Murray, John Stephen 1; Email Address: mwchaffee@aol.com; Source Information: Dec2009, Vol. 109 Issue 12, p28; Subject: PUBLIC health -- United States; Subject: UNITED States. Agency for Healthcare Research & Quality; Subject: CHILDREN -- Health -- Government policy; Subject: PEDIATRIC emergencies; Subject: NATURAL disasters -- Physiological aspects; Subject: EMERGENCY management; Geographic Terms: UNITED States; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=46794610&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Iarve, Endel V. AU - Mollenhauer, David H. AU - Zhou, Eric G. AU - Breitzman, Timothy AU - Whitney, Thomas J. T1 - Independent mesh method-based prediction of local and volume average fields in textile composites JO - Composites: Part A, Applied Science & Manufacturing JF - Composites: Part A, Applied Science & Manufacturing Y1 - 2009/12// VL - 40 IS - 12 M3 - Article SP - 1880 EP - 1890 SN - 1359835X AB - An independent mesh method (IMM) for three-dimensional stress analysis in composites with complex fiber architectures is proposed. The method represents a combination of direct meshing and voxel-based methodology and allows the modeling of complex tow geometries not readily amenable to traditional finite element meshing. Each fiber tow is meshed independently, while the matrix is meshed throughout the volume of interest. The matrix approximation is then truncated by disregarding the shape functions, whose support is completely inside a tow or completely covered by more than one tow in regions such as tow intersections. The calculation of average stiffness properties of both an oblong fiber-matrix representative volume element (RVE) and a plain weave composite RVE is performed for verification and convergence evaluation purposes. The digital chain technique was used to model fiber architecture in the tri-axial braided composite with high fidelity including the effects of nesting and compaction of plies. Local deformations of the digital architecture due to relief of residual processing stress following a saw cut were predicted by using IMM. These deformations in the tri-axial braided composite were then measured experimentally using Moiré interferometry. The degree of agreement between the predicted strain fields and those measured experimentally was shown to correlate with the degree of accuracy of digital architecture and varied from agreement in average behavior to practically point wise agreement across the entire field of measurement. [Copyright &y& Elsevier] AB - Copyright of Composites: Part A, Applied Science & Manufacturing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL models KW - APPROXIMATION theory KW - COMPOSITE materials KW - FIBERS KW - PREDICTION theory KW - TEXTILES KW - DIMENSIONAL analysis KW - NUMERICAL analysis KW - A. Fabrics/textiles KW - B. Residual/internal stress KW - C. Numerical analysis KW - Moire interferometry N1 - Accession Number: 45421726; Iarve, Endel V. 1; Email Address: endel.iarve@wpafb.af.mil; Mollenhauer, David H. 2; Zhou, Eric G. 1; Breitzman, Timothy 2; Whitney, Thomas J. 1; Affiliations: 1: University of Dayton Research Institute, Dayton, OH 45469, United States; 2: Air Force Research Laboratory, WPAFB, OH 45433, United States; Issue Info: Dec2009, Vol. 40 Issue 12, p1880; Thesaurus Term: MATHEMATICAL models; Thesaurus Term: APPROXIMATION theory; Subject Term: COMPOSITE materials; Subject Term: FIBERS; Subject Term: PREDICTION theory; Subject Term: TEXTILES; Subject Term: DIMENSIONAL analysis; Subject Term: NUMERICAL analysis; Author-Supplied Keyword: A. Fabrics/textiles; Author-Supplied Keyword: B. Residual/internal stress; Author-Supplied Keyword: C. Numerical analysis; Author-Supplied Keyword: Moire interferometry; NAICS/Industry Codes: 414130 Piece goods, notions and other dry goods merchant wholesalers; NAICS/Industry Codes: 314999 All Other Miscellaneous Textile Product Mills; NAICS/Industry Codes: 313210 Broadwoven Fabric Mills; NAICS/Industry Codes: 424310 Piece Goods, Notions, and Other Dry Goods Merchant Wholesalers; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.compositesa.2009.04.034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=45421726&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Breitzman, T.D. AU - Iarve, E.V. AU - Cook, B.M. AU - Schoeppner, G.A. AU - Lipton, R.P. T1 - Optimization of a composite scarf repair patch under tensile loading JO - Composites: Part A, Applied Science & Manufacturing JF - Composites: Part A, Applied Science & Manufacturing Y1 - 2009/12// VL - 40 IS - 12 M3 - Article SP - 1921 EP - 1930 SN - 1359835X AB - Abstract: Mechanics of the composite repair under tensile loading with and without overlay plies was examined for nontraditional patch ply orientations. Three-dimensional nonlinear analysis was performed for repair failure prediction and good baseline comparison for open hole scarfed panels and panels repaired by using standard ply-by-ply replacement patch composition was achieved. Multidimensional optimization was performed to calculate the repair patch ply orientations which minimize the von Mises stresses in the adhesive. These optimal stacking sequences achieved significant reduction of the stress levels and resulted in predicted up to 85% and 90% strength restoration for flush and single ply thickness over-ply repair. These results are intended to illustrate additional design variables available for efficient composite repair design, namely the composition of the repair patch. [Copyright &y& Elsevier] AB - Copyright of Composites: Part A, Applied Science & Manufacturing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL optimization KW - POLYMERIC composites KW - STRAINS & stresses (Mechanics) KW - NUMERICAL analysis KW - TENSILE architecture KW - NONLINEAR models (Statistics) KW - NUMERICAL calculations KW - A. Polymer-matrix composites (PMCs) KW - B. Strength KW - C. Numerical analysis KW - E. Joints/joining N1 - Accession Number: 45421730; Breitzman, T.D. 1; Email Address: timothy.breitzman@wpafb.af.mil; Iarve, E.V. 1,2; Cook, B.M. 1; Schoeppner, G.A. 1; Lipton, R.P. 3; Affiliations: 1: Composites and Hybrids Branch, Air Force Research Laboratory, 2941 Hobson Way, Wright-Patterson AFB, OH 45433-7750, USA; 2: University of Dayton Research Institute, 300 College Park Avenue, Dayton, OH 45469-0168, USA; 3: Department of Mathematics, Louisiana State University, Baton Rouge, LA 70803, USA; Issue Info: Dec2009, Vol. 40 Issue 12, p1921; Thesaurus Term: MATHEMATICAL optimization; Subject Term: POLYMERIC composites; Subject Term: STRAINS & stresses (Mechanics); Subject Term: NUMERICAL analysis; Subject Term: TENSILE architecture; Subject Term: NONLINEAR models (Statistics); Subject Term: NUMERICAL calculations; Author-Supplied Keyword: A. Polymer-matrix composites (PMCs); Author-Supplied Keyword: B. Strength; Author-Supplied Keyword: C. Numerical analysis; Author-Supplied Keyword: E. Joints/joining; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.compositesa.2009.04.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=45421730&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Pochiraju, Kishore AU - Tandon, Gyaneshwar P. T1 - Interaction of oxidation and damage in high temperature polymeric matrix composites JO - Composites: Part A, Applied Science & Manufacturing JF - Composites: Part A, Applied Science & Manufacturing Y1 - 2009/12// VL - 40 IS - 12 M3 - Article SP - 1931 EP - 1940 SN - 1359835X AB - Abstract: Polymeric matrix composites with long term durability requirements at high temperatures must be designed to resist degradation due to physical aging, chemical changes and thermo-oxidation. This paper describes the interaction between oxidation and damage during high temperature aging of polymeric matrix composites. The oxidation layer growth in neat resins depends upon the relative dominance of the oxygen diffusion rate in oxidized region and the reaction rate in the un-oxidized region. Oxidation in fiber-reinforced composites is seen to be orthotropic with axial direction of fiber being the preferred oxidation growth direction. Transverse oxidation growth correlates with growth rates in neat resins after accounting for the fiber microstructure effects and attributing additional diffusivity to the fibers and fiber–matrix interphase. However, the oxidation growth in areas where discrete cracking is observed is substantially higher. Close coupling is observed between discrete crack growth rates and oxidation layer growth rates in axial direction. Damage evolution and the interaction of damage and oxygen diffusivity are critical factors and must be considered for oxidation growth prediction in composite materials. In this paper, a model-based analysis of oxidation in composites is presented using a systematic methodology that determines the relative effects of the matrix oxidation, role of fiber and interface effects and that of the damage growth. Carbon fiber-reinforced PMR-15 composites are used for both experimental characterization and simulations. [Copyright &y& Elsevier] AB - Copyright of Composites: Part A, Applied Science & Manufacturing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIMULATION methods & models KW - POLYMERIC composites KW - OXIDATION KW - HIGH temperatures KW - MICROSTRUCTURE KW - MATRIX mechanics KW - CARBON fibers KW - MATERIALS -- Deterioration KW - B. Durability KW - B. Environmental degradation KW - B. Fracture KW - B. Thermo-oxidative aging N1 - Accession Number: 45421731; Pochiraju, Kishore 1; Email Address: kishore.pochiraju@stevens.edu; Tandon, Gyaneshwar P. 2,3; Affiliations: 1: Stevens Institute of Technology, Castle Point on Hudson, Hoboken, NJ 07030, United States; 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXBC, Wright Patterson Air Force Base, OH 45433, United States; 3: University of Dayton Research Institute, Dayton, OH 45469-0060, United States; Issue Info: Dec2009, Vol. 40 Issue 12, p1931; Thesaurus Term: SIMULATION methods & models; Subject Term: POLYMERIC composites; Subject Term: OXIDATION; Subject Term: HIGH temperatures; Subject Term: MICROSTRUCTURE; Subject Term: MATRIX mechanics; Subject Term: CARBON fibers; Subject Term: MATERIALS -- Deterioration; Author-Supplied Keyword: B. Durability; Author-Supplied Keyword: B. Environmental degradation; Author-Supplied Keyword: B. Fracture; Author-Supplied Keyword: B. Thermo-oxidative aging; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.compositesa.2009.03.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=45421731&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 105183145 T1 - On tracking the course of cerebral oxygen saturation and pilot performance during gravity-induced loss of consciousness. AU - Tripp LD AU - Warm JS AU - Matthews G AU - Chiu PY AU - Bracken RB AU - Tripp, Lloyd D AU - Warm, Joel S AU - Matthews, Gerald AU - Chiu, Peter Y AU - Bracken, R Bruce Y1 - 2009/12// N1 - Accession Number: 105183145. Language: English. Entry Date: 20100528. Revision Date: 20170228. Publication Type: journal article; research. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. NLM UID: 0374660. KW - Gravitation -- Adverse Effects KW - Hypoxia, Brain -- Physiopathology KW - Military Personnel KW - Oxygen -- Metabolism KW - Unconsciousness -- Physiopathology KW - Motion -- Adverse Effects KW - Adult KW - Aerospace Medicine KW - Cerebrovascular Circulation KW - Female KW - Ergonomics KW - Human KW - Hypoxia, Brain -- Etiology KW - Male KW - Motor Skills KW - Recovery KW - Unconsciousness -- Etiology SP - 775 EP - 784 JO - Human Factors JF - Human Factors JA - HUM FACTORS VL - 51 IS - 6 PB - Sage Publications Inc. AB - Objective: The aim of this study was to track the course of cerebral tissue oxygen saturation (rSO2) and pilot performance during an episode of gravity-induced loss of consciousness (GLOC).Background: GLOC, a major problem facing pilots of high-performance aircraft, is brought about by a sudden reduction in rSO2 as a result of increased +Gz force. It consists of 24 s of complete functional impairment followed by a prolonged period of performance recovery. This study tested the hypothesis that delayed recovery in GLOC is caused by a slow return of rSO2 following removal of the g-force that induced the episode.Method: GLOC was induced in U.S. Air Force personnel via a centrifuge with math and tracking tasks emulating flight performance. A near-infrared spectroscopy unit provided the rSO2 measure.Results: Declines in rSO2 from baseline pinpointed when pilots would cease active flight control and when GLOC would set in. Counter to expectation, rSO2 returned to baseline levels shortly after the centrifuge came to a complete stop following GLOC onset. Nevertheless, performance deficits continued for 49.45 s thereafter.Conclusion: The prolonged performance recovery time in GLOC cannot be attributed to delays in the return of rSO2. This finding explains why previous ergonomic efforts to shorten the duration of GLOC episodes by increasing the rate of return of rSO2 have not been fruitful. Evidently, another approach is needed.Application: Such an approach might use the close linkage between loss of rSO2, performance deterioration, and GLOC onset to develop a warning system that would permit pilots to take effective action to avoid GLOC incapacitation. SN - 0018-7208 AD - Biosciences and Performance Division, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA AD - Biosciences and Performance Division, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA. lloyd.tripp@wpafb.af.mil U2 - PMID: 20415154. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105183145&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Li, Ming AU - Batalama, Stella N. AU - Pados, Dimitris A. AU - Matyjas, John D. T1 - Minimum Total-Squared-Correlation Quaternary Signature Sets: New Bounds and Optimal Designs. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2009/12// VL - 57 IS - 12 M3 - Article SP - 3662 EP - 3671 SN - 00906778 AB - We derive new bounds on the total squared correlation (TSC) of quaternary (quadriphase) signature/sequence sets for all lengths L and set sizes K. Then, for all K, L, we design minimum-TSC optimal sets that meet the new bounds with equality. Direct numerical comparison with the TSC value of the recently obtained optimal binary sets shows under what K, L realizations gains are materialized by moving from the binary to the quaternary code-division multiplexing alphabet. On the other hand, comparison with the Welch TSC value for real/complex-field sets shows that, arguably, not much is to be gained by raising the alphabet size above four for any K, L. The sum-capacity (as well as the maximum squared correlation and total asymptotic efficiency) of minimum TSC quaternary sets is also evaluated in closed-form and contrasted against the sum capacity of minimum-TSC optimal binary and real/complex sets. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Multiplexing (Telecommunication) KW - Numerical analysis KW - Binary control systems KW - Quaternary forms KW - Set theory KW - Code-division multiplexing KW - multiuser communications KW - quadriphase symbols KW - quaternary alphabet KW - sequences KW - sum capacity KW - Welch bound N1 - Accession Number: 47489324; Li, Ming 1; Email Address: mingli@eng.buffalo.edu; Batalama, Stella N. 1; Email Address: batalama@eng.buffalo.edu; Pados, Dimitris A. 1; Email Address: pados@eng.buffalo.edu; Matyjas, John D. 2; Email Address: John.Matyjas@rl.af.mil; Affiliations: 1: Department of Electrical Engineering, State University of New York at Buffalo, Buffalo, NY 14260, USA; 2: Air Force Research Laboratory/RIGE, Rome, NY 13441, USA; Issue Info: Dec2009, Vol. 57 Issue 12, p3662; Thesaurus Term: Multiplexing (Telecommunication); Subject Term: Numerical analysis; Subject Term: Binary control systems; Subject Term: Quaternary forms; Subject Term: Set theory; Author-Supplied Keyword: Code-division multiplexing; Author-Supplied Keyword: multiuser communications; Author-Supplied Keyword: quadriphase symbols; Author-Supplied Keyword: quaternary alphabet; Author-Supplied Keyword: sequences; Author-Supplied Keyword: sum capacity; Author-Supplied Keyword: Welch bound; Number of Pages: 10p; Illustrations: 4 Black and White Photographs, 7 Graphs; Document Type: Article L3 - 10.1109/TCOMM.2009.12.080589 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=47489324&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Chakravarthy, Vasu AU - Li, Xue AU - Wu, Zhiqiang AU - Temple, Michael A. AU - Garber, Fred AU - Kannan, Rajgopal AU - Vasilakos, Athanasios T1 - Novel Overlay/Underlay Cognitive Radio Waveforms Using SD-SMSE Framework to Enhance Spectrum Efficiency Part I: Theoretical Framework and Analysis in AWGN Channel. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2009/12// VL - 57 IS - 12 M3 - Article SP - 3794 EP - 3804 SN - 00906778 AB - Abstract-Recent studies suggest that spectrum congestion is primarily due to inefficient spectrum usage rather than spectrum availability. Dynamic Spectrum Access (DSA) and Cognitive Radio (CR) are two techniques being considered to improve spectrum efficiency and utilization. The advent of CR has created a paradigm shift in wireless communications and instigated a change in FCC policy towards spectrum regulations. Within the hierarchical DSA model, spectrum overlay and underlay techniques are employed to enable primary and secondary users to coexist while improving overall spectrum efficiency. As employed here, spectrum overlay exploits unused (white) spectral regions while spectrum underlay exploits underused (gray) spectral regions. In general, underlay approaches use more spectrum than overlay approaches and operate below the noise floor of primary users. Spectrally modulated, spectrally encoded (SMSE) signals, to include Orthogonal Frequency Domain Multiplexing (OFDM) and Multi-Carrier Code Division Multiple Access (MC-CDMA), are candidate CR waveforms. The SMSE structure supports and is well suited for CR-based Software Defined Radio (SDR) applications. This paper provides a general soft decision SMSE (SD-SMSE) framework that extends the original SMSE framework to achieve synergistic CR benefits of overlay and underlay techniques. This extended framework provides considerable flexibility to design overlay, underlay and hybrid overlay/underlay waveforms that are scenario dependent. Overlay/underlay framework flexibility is demonstrated herein for a family of SMSE signals, including OFDM and MC-CDMA. Analytic derivation of CR error probability for overlay and underlay applications is presented. Simulated performance analysis of overlay, underlay and hybrid overlay/underlay waveforms is also presented and benefits discussed, to include improved spectrum efficiency and channel capacity maximization. Performance analysis of overlay/underlay CR waveform in fading channels will be discussed in Part II of the paper. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Radio waves KW - Signal processing KW - Radio (Medium) KW - Spectrum allocation KW - Random noise theory KW - Cognitive radio KW - dynamic spectrum access KW - overlay waveform KW - spectrum efficiency KW - underlay waveform N1 - Accession Number: 47489337; Chakravarthy, Vasu 1; Email Address: Vasu.Chakravarthy@wpafb.af.mil; Li, Xue 2; Email Address: li.68@wright.edu; Wu, Zhiqiang 2; Email Address: Zhiqiang.Wu@wright.edu; Temple, Michael A. 3; Email Address: michael.temple@afit.edu; Garber, Fred 2; Email Address: Fred.Garber@wright.edu; Kannan, Rajgopal 4; Email Address: rkannan@bit.csc.lsu.edu; Vasilakos, Athanasios 5; Affiliations: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH; 2: Wright State University; 3: Air Force Institute of Technology; 4: Louisiana State University; 5: University of Western Macedonia, Greece; Issue Info: Dec2009, Vol. 57 Issue 12, p3794; Thesaurus Term: Radio waves; Thesaurus Term: Signal processing; Thesaurus Term: Radio (Medium); Subject Term: Spectrum allocation; Subject Term: Random noise theory; Author-Supplied Keyword: Cognitive radio; Author-Supplied Keyword: dynamic spectrum access; Author-Supplied Keyword: overlay waveform; Author-Supplied Keyword: spectrum efficiency; Author-Supplied Keyword: underlay waveform; NAICS/Industry Codes: 515111 Radio Networks; Number of Pages: 11p; Illustrations: 7 Black and White Photographs, 10 Graphs; Document Type: Article L3 - 10.1109/TCOMM.2009.12.080400 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=47489337&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Nong Ye AU - Xiaoyun Xu AU - Hurley, Patrick T1 - QoS protocols for end-to-end delay guarantee of instantaneous jobs on computer networks. JO - Information Knowledge Systems Management JF - Information Knowledge Systems Management Y1 - 2009/12// VL - 7 IS - 4 M3 - Article SP - 429 EP - 451 PB - IOS Press SN - 13891995 AB - QoS (Quality of Service) guarantee is highly desirable for many service-oriented computer and network applications on the Internet. This paper focuses on the timeliness aspect of QoS, especially the end-to-end delay guarantee. Resource reSerVation Protocol (RSVP) has been proposed based on the Integrated Service (InteServ) model to provide the QoS guarantee through bandwidth reservation that is applicable to jobs with continuous data flows over a period of time, such as those for tele-conferencing, voice over IP, video and audio streaming applications. There are other applications such as emails generating one-time, instantaneous jobs that cannot be characterized by the flow rate and peak rate for bandwidth reservation. Hence, RSVP is not applicable to instantaneous jobs. This paper presents QoS protocols, called Instantaneous RSVP (I-RSVP) and Stable Instantaneous Resource reSerVation Protocol (SI-RSVP), which are developed for providing the end-to-end delay guarantee of instantaneous jobs. The performance of I-RSVP and SI-RSVP are tested and compared with that of the best effort service model using both small and large scale network simulations. [ABSTRACT FROM AUTHOR] AB - Copyright of Information Knowledge Systems Management is the property of IOS Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER networks KW - COMPUTER network architectures KW - INTERNET protocols KW - BANDWIDTHS KW - QUALITY of service KW - COMPUTER simulation KW - end-to-end delay KW - network simulation KW - Quality of Service KW - reservation and service protocol N1 - Accession Number: 45726696; Nong Ye 1; Email Address: nongye@asu.edu; Xiaoyun Xu 1; Email Address: xiaoyun.xu@asu.edu; Hurley, Patrick 2; Email Address: Patrick.Hurley@rl.af.mil; Affiliations: 1: Department of Industrial Engineering, Arizona State University, PO Box 875906, Tempe, AZ 85287-5906, USA; 2: Air Force Research Laboratory/RIGA, 525 Brooks Road, Rome, NY 13441-4505, USA; Issue Info: 2008, Vol. 7 Issue 4, p429; Thesaurus Term: COMPUTER networks; Thesaurus Term: COMPUTER network architectures; Thesaurus Term: INTERNET protocols; Thesaurus Term: BANDWIDTHS; Thesaurus Term: QUALITY of service; Subject Term: COMPUTER simulation; Author-Supplied Keyword: end-to-end delay; Author-Supplied Keyword: network simulation; Author-Supplied Keyword: Quality of Service; Author-Supplied Keyword: reservation and service protocol; NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; Number of Pages: 23p; Illustrations: 6 Diagrams, 22 Charts, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=45726696&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Lee, J.-H. AU - Wu, C.-Y. AU - Lee, C. N. AU - Anwar, D. AU - Wysocki, K. M. AU - Lundgren, D. A. AU - Farrah, S. AU - Wander, J. AU - Heimbuch, B. K. T1 - Assessment of iodine-treated filter media for removal and inactivation of MS2 bacteriophage aerosols. JO - Journal of Applied Microbiology JF - Journal of Applied Microbiology Y1 - 2009/12// VL - 107 IS - 6 M3 - Article SP - 1912 EP - 1923 PB - Wiley-Blackwell SN - 13645072 AB - Aims: To investigate the performance of an iodine-releasing filter medium for use as a protective device against airborne pathogens. Methods and Results: The filter’s physical and viable removal efficiencies (VRE) were investigated with challenges of MS2 bacteriophage aerosols, and the infectivity of MS2 collected on the filter was analysed. To test a proposed inactivation mechanism, media containing thiosulfate or bovine serum albumin (BSA) were put in impingers to quench and consume I2 released from the filter. In direct plating experiments, treated filters presented significantly higher VREs than did untreated filters; however, collection in excess BSA decreased VRE by half and in thiosulfate the apparent VRE decreased drastically. No significant difference in infectivity of retained viruses on treated and untreated filters was observed at the same environmental condition. Conclusions: Evidence presented herein for competition by dissolved I2 in infectivity assays supports a mechanism of induced displacement and capture of I2. It also requires that dissociation of iodine from the filter and capture of iodine by MS2 aerosols as they pass through the filter be factored in the design of the assessment methodology. The filter’s strong retention capability minimizes reaerosolization but also makes it difficult to discriminate the antimicrobial effect at the surface. Significance and Impact of the Study: This study shows the direct plating assay method to be sensitive to interference by iodine-releasing materials. This requires reevaluation of earlier reports of VRE measurements. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Microbiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Pathogenic microorganisms KW - Bacteriophages KW - Iodine KW - Aerosols (Sprays) KW - Microbiological assay KW - Halogens KW - Viruses KW - Serum albumin KW - Blood proteins KW - antimicrobial KW - biocidal filter KW - inactivation KW - iodine KW - MS2 KW - removal efficiency N1 - Accession Number: 45131812; Lee, J.-H. 1; Wu, C.-Y. 1; Email Address: cywu@ufl.edu; Lee, C. N. 2; Anwar, D. 2; Wysocki, K. M. 3; Lundgren, D. A. 1; Farrah, S. 4; Wander, J. 5; Heimbuch, B. K. 5; Affiliations: 1: Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL, USA.; 2: Department of Chemical Engineering, University of Florida, Gainesville, FL, USA.; 3: Dow Latex Technical Center, Midland, MI, USA.; 4: Department of Microbiology and Cell Science, University of Florida, Gainesville, FL, USA.; 5: Airbase Technology Division, Air Force Research Laboratory, Tyndall Air Force Base, FL, USA.; Issue Info: Dec2009, Vol. 107 Issue 6, p1912; Thesaurus Term: Pathogenic microorganisms; Thesaurus Term: Bacteriophages; Thesaurus Term: Iodine; Thesaurus Term: Aerosols (Sprays); Thesaurus Term: Microbiological assay; Thesaurus Term: Halogens; Thesaurus Term: Viruses; Subject Term: Serum albumin; Subject Term: Blood proteins; Author-Supplied Keyword: antimicrobial; Author-Supplied Keyword: biocidal filter; Author-Supplied Keyword: inactivation; Author-Supplied Keyword: iodine; Author-Supplied Keyword: MS2; Author-Supplied Keyword: removal efficiency; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 12p; Illustrations: 2 Diagrams, 4 Charts, 2 Graphs; Document Type: Article L3 - 10.1111/j.1365-2672.2009.04375.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=45131812&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 105257376 T1 - Arthroscopic repair of circumferential lesions of the glenoid labrum. AU - Tokish LC AU - McBratney MC AU - Solomon CD AU - Leclere LL AU - Dewing LC AU - Provencher CM AU - Tokish, John M AU - McBratney, Colleen M AU - Solomon, Daniel J AU - Leclere, Lance AU - Dewing, Christopher B AU - Provencher, Matthew T Y1 - 2009/12// N1 - Accession Number: 105257376. Language: English. Entry Date: 20100115. Revision Date: 20160517. Publication Type: journal article; research. Journal Subset: Biomedical; Blind Peer Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Perioperative Care. Instrumentation: Short Form 12 Health Survey (SF-12); Single Assessment Numeric Evaluation (SANE); American Shoulder and Elbow Surgeons Score [modified]. NLM UID: 0014030. KW - Arthralgia -- Surgery KW - Arthroscopy -- Methods KW - Joint Instability -- Surgery KW - Shoulder Joint -- Injuries KW - Shoulder Joint -- Surgery KW - Adolescence KW - Adult KW - Arthralgia -- Etiology KW - Female KW - Human KW - Joint Instability -- Etiology KW - Male KW - Recurrence KW - Sutures KW - Suture Techniques KW - Young Adult KW - Scales KW - Clinical Assessment Tools KW - Questionnaires SP - 2795 EP - 2802 JO - Journal of Bone & Joint Surgery, American Volume JF - Journal of Bone & Joint Surgery, American Volume JA - J BONE JOINT SURG (AM) VL - 91 IS - 12 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - Background: Symptomatic pan-labral or circumferential (360 degrees ) tears of the glenohumeral labrum are an uncommon injury. The purpose of the present study was to report the results of surgical treatment of circumferential lesions of the glenoid labrum with use of validated outcome instruments.Methods: From July 2003 to May 2006, forty-one shoulders in thirty-nine patients (thirty-four men and five women) with a mean age of 25.1 years were prospectively enrolled in a multicenter study and were managed for a circumferential (360 degrees ) lesion of the glenoid labrum. All patients had a primary diagnosis of pain and recurrent shoulder instability, and all underwent arthroscopic repair of the circumferential labral tear with a mean of 7.1 suture anchors. The outcomes for thirty-nine of the forty-one shoulders were assessed after a mean duration of follow-up of 31.8 months on the basis of the rating of pain and instability on a scale of 0 to 10, a physical examination, and three outcome instruments (the Single Assessment Numeric Evaluation score, the modified American Shoulder and Elbow Surgeons score, and the Short Form-12 score).Results: Significant improvement was noted in terms of the mean pain score (from 4.3 to 1.1), the mean instability score (from 7.3 to 0.2), the mean modified American Shoulder and Elbow Surgeons score (from 55.5 to 89.6), the mean Short Form-12 score (from 75.7 to 90.0), and the mean Single Assessment Numeric Evaluation score (from 36.7 to 88.5). Six shoulders required revision surgery because of recurrent instability (two), recalcitrant biceps tendinitis (two), or postoperative tightness (two). All patients returned to their preinjury activity level.Conclusions: Pan-labral or circumferential lesions are an uncommon yet extensive injury of the glenohumeral joint that may result in recurrent instability and pain. The present study demonstrates that arthroscopic capsulolabral repair with suture anchor fixation can restore the stability of the glenohumeral joint and can provide a reliable improvement in subjective and objective outcome measures. SN - 0021-9355 AD - Department of Orthopedics, 10th Medical Group, The United States Air Force Academy, Colorado Springs, CO 80840, USA AD - Department of Orthopedics, 10th Medical Group, The United States Air Force Academy, 4102 Pinon Drive, Suite 100, Colorado Springs, CO 80840. jtoke95@aol.com. U2 - PMID: 19952240. DO - 10.2106/JBJS.H.01241 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105257376&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Okulicz, Jason F. AU - Marconi, Vincent C. AU - Landrum, Michael L. AU - Wegner, Scott AU - Weintrob, Amy AU - Ganesan, Anuradha AU - Hale, Braden AU - Crum-Cianflone, Nancy AU - Delmar, Judith AU - Barthel, Vincent AU - Quinnan, Gerald AU - Agan, Brian K. AU - Dolan, Matthew J. T1 - Clinical Outcomes of Elite Controllers, Viremic Controllers, and Long-Term Nonprogressors in the US Department of Defense HIV Natural History Study. JO - Journal of Infectious Diseases JF - Journal of Infectious Diseases Y1 - 2009/12//12/1/2009 VL - 200 IS - 11 M3 - Article SP - 1714 EP - 1723 SN - 00221899 AB - Durable control of human immunodeficiency virus (HIV) replication and lack of disease progression in the absence of antiretroviral therapy were studied in a military cohort of 4586 subjects. We examined groups of elite controllers (ie, subjects with plasma HIV RNA levels of <50 copies/mL; prevalence, 0.55% [95% confidence interval {CI}, 0.35%-0.80%]), viremic controllers (ie, subjects with plasma HIV RNA levels of 50-2000 copies/ mL; prevalence, 3.34% [95% CI, 2.83%-3.91%]), and subjects with a lack of disease progression (ie, long-term nonprogressors [LTNPs]) through 7 years of follow-up (LTNP7s; prevalence, 3.32% [95% CI, 2.70%-4.01%]) or 10 years of follow-up (LTNP10s; prevalence, 2.04% [95% CI, 1.52%-2.68%]). For elite and viremic controllers, spontaneous virologic control was established early and was typically observed when the initial viral load measurement was obtained within 1 year of estimated seroconversion. Elite controllers had favorable time to development of AIDS ( ), a P=.048 CD4 cell count of 350 cells/μL (P=.009), and more-stable CD4 cell trends, compared with viremic controllers. LTNPs defined by 10-year versus 7-year criteria had a longer survival time (P=.001), even after adjustment for differing periods of invulnerability (P=.042). Definitions of controllers and LTNPs describe distinct populations whose differing clinical outcomes improve with the stringency of criteria, underscoring the need for comparability between study populations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Infectious Diseases is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIV (Viruses) KW - AIDS (Disease) KW - Clinical trials KW - Viral replication KW - Disease progression KW - Antiretroviral agents KW - Confidence intervals KW - Cohort analysis KW - Seroconversion KW - Medical research N1 - Accession Number: 45566196; Okulicz, Jason F. 1,2; Email Address: Jason.okulicz@amedd.army.mil; Marconi, Vincent C. 1,2; Landrum, Michael L. 1,2; Wegner, Scott 1; Weintrob, Amy 1,3; Ganesan, Anuradha 1,4; Hale, Braden 1,5; Crum-Cianflone, Nancy 1,5; Delmar, Judith 2; Barthel, Vincent 1,6; Quinnan, Gerald 1; Agan, Brian K. 1; Dolan, Matthew J. 2,7; Affiliations: 1: Infectious Disease Clinical Research Program, Uniformed Services University of the Health Sciences; 2: Infectious Disease Service, San Antonio Military Medical Center, Brooke Army Medical Center, Fort Sam Houston; 3: Infectious Disease Clinic, Walter Reed Army Medical Center, Washington, DC; 4: Infectious Disease Clinic, National Naval Medical Center, Bethesda, Maryland; 5: Infectious Disease Clinic, Naval Medical Center San Diego, San Diego, California; 6: Infectious Disease Clinic, Naval Medical Center Portsmouth, Portsmouth, Virginia; 7: Henry M. Jackson Foundation, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas; Issue Info: 12/1/2009, Vol. 200 Issue 11, p1714; Thesaurus Term: HIV (Viruses); Thesaurus Term: AIDS (Disease); Subject Term: Clinical trials; Subject Term: Viral replication; Subject Term: Disease progression; Subject Term: Antiretroviral agents; Subject Term: Confidence intervals; Subject Term: Cohort analysis; Subject Term: Seroconversion; Subject Term: Medical research; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 10p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1086/646609 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=45566196&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Lessa, Fernanda C. AU - Gould, Philip L. AU - Pascoe, Neil AU - Erdman, Dean D. AU - Xiaoyan Lu AU - Bunning, Michel L. AU - Marconi, Vincent C. AU - Lott, Lisa AU - Widdowson, Marc-Alain AU - Anderson, Larry J. AU - Srinivasan, Arjun T1 - Health Care Transmission of a Newly Emergent Adenovirus Serotype in Health Care Personnel at a Military Hospital in Texas, 2007. JO - Journal of Infectious Diseases JF - Journal of Infectious Diseases Y1 - 2009/12//12/1/2009 VL - 200 IS - 11 M3 - Article SP - 1759 EP - 1765 SN - 00221899 AB - Background. Adenoviruses can cause outbreaks of febrile respiratory illness in military trainees, but until 2007, adenovirus serotype 14 (Ad14) was never associated with such outbreaks. From April through June 2007, 15 trainees at one base were hospitalized for pneumonia due to Ad14. Subsequent reports of febrile respiratory illness among health care personnel suggested nosocomial transmission. Methods. Health care personnel participants completed a questionnaire and provided blood and nasal wash specimens for Ad14 diagnostic testing. We defined a confirmed case of Ad14 infection as one with titers ⩾1:80 or nasal wash specimens positive for Ad14 by polymerase chain reaction, whereas a possible case was defined by titers of 1:20 or 1:40. We also collected environmental samples. Results. Among 218 tested health care personnel, 35 (16%) had titers ⩾1:20; of these, 7 had possible cases and 28 had confirmed cases of infection. Confirmed case patients were more likely to report febrile respiratory illness (57% vs 11%; P < .001) and to have had direct contact with patients with Ad14 infection (82% vs 62%; P=.04). Of the 23 confirmed case patients with direct contact with Ad14-infected patients, 52% reported that patients were not in contact and droplet precautions at the time of exposure. Ad14 was recovered from several hospital surfaces. Conclusion. Our findings of possible nosocomial transmission of Ad14 highlight the need to reinforce infection control guidelines. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Infectious Diseases is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Adenoviruses KW - Environmental sampling KW - Respiratory infections KW - Medical personnel KW - Military hospitals KW - Serotypes KW - Polymerase chain reaction KW - Questionnaires KW - Nosocomial infections KW - Texas N1 - Accession Number: 45566202; Lessa, Fernanda C. 1,2; Email Address: flessa@cdc.gov; Gould, Philip L. 2,3; Pascoe, Neil 4; Erdman, Dean D. 3; Xiaoyan Lu 3; Bunning, Michel L. 5; Marconi, Vincent C. 6; Lott, Lisa 7; Widdowson, Marc-Alain 3; Anderson, Larry J. 3; Srinivasan, Arjun 1; Affiliations: 1: Division of Healthcare Quality Promotion, National Center for Preparedness, Detection, and Control of Infectious Diseases; 2: Epidemic Intelligence Service, Office of Workforce and Career Development; 3: Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia; 4: Texas Department of State Health Services, Austin; 5: Air Force Medical Operations Agency, United States Air Force, Kelly Air Force Base; 6: Wilford Hall US Air Force Medical Center; 7: Epidemic Outbreak Surveillance, Advanced Diagnostics Laboratory, Modernization Directorate, Office of the Surgeon General, Lackland Air Force Base, Texas; Issue Info: 12/1/2009, Vol. 200 Issue 11, p1759; Thesaurus Term: Adenoviruses; Thesaurus Term: Environmental sampling; Subject Term: Respiratory infections; Subject Term: Medical personnel; Subject Term: Military hospitals; Subject Term: Serotypes; Subject Term: Polymerase chain reaction; Subject Term: Questionnaires; Subject Term: Nosocomial infections; Subject: Texas; NAICS/Industry Codes: 622111 General (except paediatric) hospitals; Number of Pages: 7p; Illustrations: 3 Charts, 1 Graph; Document Type: Article L3 - 10.1086/647987 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=45566202&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 105263303 T1 - Wingate Anaerobic Test Peak power and anaerobic capacity classifications for men and women intercollegiate athletes. AU - Zupan MF AU - Arata AW AU - Dawson LH AU - Wile AL AU - Payn TL AU - Hannon ME Y1 - 2009/12// N1 - Accession Number: 105263303. Language: English. Entry Date: 20100212. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Allied Health; Biomedical; Double Blind Peer Reviewed; Peer Reviewed; USA. Special Interest: Physical Therapy. NLM UID: 9415084. KW - Anaerobic Exercises KW - Athletes, College KW - Exercise Intensity -- Evaluation KW - Exercise Test -- Methods KW - Lower Extremity -- Physiology KW - Reference Values KW - Adolescence KW - Body Weights and Measures KW - Cycling KW - Data Analysis Software KW - Descriptive Statistics KW - Ergometry KW - Exercise Physiology KW - Female KW - Human KW - Male KW - Young Adult SP - 2598 EP - 2604 JO - Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins) JF - Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins) JA - J STRENGTH CONDITION RES (LIPPINCOTT WILLIAMS WILKINS) VL - 23 IS - 9 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - The Wingate Anaerobic Test (WAnT) has been established as an effective tool in measuring both muscular power and anaerobic capacity in a 30-second time period; however, there are no published normative tables by which to compare WAnT performance in men and women intercollegiate athletics. The purpose of this study was to develop a classification system for anaerobic peak power and anaerobic capacity for men and women National Collegiate Athletic Association (NCAA) Division I college athletes using the WAnT. A total of 1,585 (1,374 men and 211 women) tests were conducted on athletes ranging from the ages of 18 to 25 years using the WAnT. Absolute and relative peak power and anaerobic capacity data were recorded. One-half standard deviations were used to set up a 7-tier classification system (poor to elite) for these assessments. These classifications can be used by athletes, coaches, and practitioners to evaluate anaerobic peak power and anaerobic capacity in their athletes. SN - 1064-8011 AD - Department of Athletics, United States Air Force Academy, USAFA, Colorado, USA. michael.zupan@usafa.edu U2 - PMID: 19910814. DO - 10.1519/JSC.0b013e3181b1b21b UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105263303&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - WINGATE ANAEROBIC TEST PEAK POWER AND ANAEROBIC CAPACITY CLASSIFICATIONS FOR MEN AND WOMEN INTERCOLLEGIATE ATHLETES. AU - ZUPAN, MICHAEL F. AU - ARATA, ALAN W. AU - DAWSON, LETITIA H. AU - WILE, ALFRED L. AU - PAYN, TAMARA L. AU - HANNON, MEGAN E. JO - Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins) JF - Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins) Y1 - 2009/12// VL - 23 IS - 9 SP - 2598 EP - 2604 SN - 10648011 N1 - Accession Number: 47453464; Author: ZUPAN, MICHAEL F.: 1 email: michael.zupan@usafa.edu. Author: ARATA, ALAN W.: 1 Author: DAWSON, LETITIA H.: 1 Author: WILE, ALFRED L.: 1 Author: PAYN, TAMARA L.: 2 Author: HANNON, MEGAN E.: 3 ; Author Affiliation: 1 Department of Athletics, United States Air Force Academy, USAFA, Colorado.: 2 Department of Exercise Science, University of South Carolina, Columbia, South Carolina.: 3 Annex Sports Performance, Chatham, New Jersey.; No. of Pages: 7; Language: English; Publication Type: Article; Update Code: 20100120 N2 - The article reports on research conducted to develop a classification system for anaerobic peak power and anaerobic capacity for men and women National Collegiate Athletic Association (NCAA) division one college athletes using the Wingate Anaerobic Test. Researchers were able to develop a seven tier classification that can be used by athletes, coaches, and practitioners to evaluate anaerobic peak power and anaerobic capacity in their athletes. KW - *PHYSICAL fitness -- Research KW - *COLLEGE athletes KW - *ANAEROBIC capacity KW - *ANAEROBIC training KW - *ATHLETIC ability -- Testing KW - absolute power KW - fatigue index KW - muscular power KW - physical fitness KW - relative power UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=47453464&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 105263372 T1 - Is performance of intermittent intense exercise enhanced by use of a commercial palm cooling device? AU - Walker TB AU - Zupan MF AU - McGregor JN AU - Cantwell AR AU - Norris TD Y1 - 2009/12// N1 - Accession Number: 105263372. Language: English. Entry Date: 20100212. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Allied Health; Biomedical; Double Blind Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services; Physical Therapy. Instrumentation: Borg Scale of Perceived Exertion. Grant Information: Defense Advanced Research Project Agency. NLM UID: 9415084. KW - Aerobic Exercises KW - Biophysical Instruments KW - Cryotherapy -- Equipment and Supplies KW - Equipment Reliability KW - Exercise Physiology KW - Hand -- Physiology KW - Physical Performance KW - Adolescence KW - Adult KW - Analysis of Variance KW - Body Weights and Measures KW - Core Body Temperature -- Evaluation KW - Data Analysis Software KW - Descriptive Statistics KW - Evaluation Research KW - Exercise Intensity KW - Exertion -- Evaluation KW - Female KW - Funding Source KW - Heart Rate -- Evaluation KW - Heat KW - Human KW - Male KW - Military Training KW - Oxygen Consumption -- Evaluation KW - Perception -- Evaluation KW - Power Analysis KW - Recovery, Exercise KW - Running KW - Scales KW - Treadmills KW - United States KW - United States Air Force SP - 2666 EP - 2672 JO - Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins) JF - Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins) JA - J STRENGTH CONDITION RES (LIPPINCOTT WILLIAMS WILKINS) VL - 23 IS - 9 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - The purpose of this study was to determine if using the CoreControl Rapid Thermal Exchange (RTX), a commercial palm cooling device, during active rest periods of multiple set training is an effective means to increase performance. Ten volunteers (5 men, 5 women) completed a VO2max test on a motorized treadmill and 3 interval running tests on a human powered treadmill. This treadmill allowed the subjects to quickly reach their running speed while allowing for measurement of distance, speed, and force. During the interval running tests the subjects completed eight 30-second intervals at a hard/fast pace followed by a 90-second walking or light jogging recovery period. During the recovery period, the subjects placed their left hand on 1 of 3 media: the RTX held at 15 degrees C (R), a 15 degrees C standard refrigerant gel pack (P), or nothing at all (C). Although there were differences in core temperature (Tc), subjective heat stress ratings, distance, and power generated between intervals, there were no significant differences (p < 0.05) found between treatments for any of these variables, nor was the interaction effect of interval*treatment found to be significant. Mean distance completed per trial was 717.1 m +/- 124.4 m (R), 724.8 m +/- 130.3 m (P), and 728.6 m +/- 110.6 m (C). Change in Tc from baseline to end-test averaged 1.41 degrees C +/- 0.37 degrees C (R), 1.41 degrees C +/- 0.39 degrees C (P), and 1.41 degrees C +/- 0.59 degrees C (C). There were no significant differences (p < 0.05) in Tc, heart rate (HR), or VO2 between intervals or treatments. We conclude that the RTX, in its current iteration, is ineffective at improving performance and/or mitigating thermal stress during high-intensity intermittent exercise. SN - 1064-8011 AD - Air Force Research Laboratory, Brooks City-Base, Texas, USA. Thomas.walker@brooks.af.mil U2 - PMID: 19910808. DO - 10.1519/JSC.0b013e3181b1f6a7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105263372&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - IS PERFORMANCE OF INTERMITTENT INTENSE EXERCISE ENHANCED BY USE OF A COMMERCIAL PALM COOLING DEVICE? AU - WALKER, THOMAS B. AU - ZUPAN, MICHAEL F. AU - MCGREGOR, JULIA N. AU - CANTWELL, ANDREW R. AU - NORRIS, TORRANCE D. JO - Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins) JF - Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins) Y1 - 2009/12// VL - 23 IS - 9 SP - 2666 EP - 2672 SN - 10648011 N1 - Accession Number: 47453473; Author: WALKER, THOMAS B.: 1 email: Thomas.walker@brooks.af.mil. Author: ZUPAN, MICHAEL F.: 1 Author: MCGREGOR, JULIA N.: 1 Author: CANTWELL, ANDREW R.: 1 Author: NORRIS, TORRANCE D.: 1 ; Author Affiliation: 1 Air Force Research Laboratory, Brooks City-Base, Texas.; No. of Pages: 7; Language: English; Publication Type: Article; Update Code: 20100120 N2 - The article reports on research conducted to determine whether the use a commercial palm cooling device called the CoreControl Rapid Thermal Exchange RTX during rest periods is an effective means to increase performance of intermittent intense exercise in athletes. Researchers evaluated 10 athletes. They found that the RTX was ineffective at improving performance or mitigating thermal stress. KW - *PHYSICAL fitness -- Research KW - *ATHLETIC ability -- Testing KW - *ATHLETES KW - *PHYSICAL training & conditioning KW - *PHYSIOLOGICAL research KW - RESEARCH KW - mechanical cooling KW - running performance KW - thermal stress UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=47453473&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Effects of bandwidth on auditory localization with a noise masker. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2009/12// VL - 126 IS - 6 M3 - Article SP - 3199 EP - 3208 SN - 00014966 AB - Although high-frequency content is known to be critically important for the accurate location of isolated sounds, relatively little is known about the importance of high-frequency spectral content for the localization of sounds in the presence of a masker. In this experiment, listeners were asked to identify the location of a pulsed-noise target in the presence of a randomly located continuous noise masker. Both the target and masker were low-pass filtered at one of eight cutoff frequencies ranging from 1 to 16 kHz, and the signal-to-noise ratio was varied from -12 to +12 dB. The results confirm the importance of high frequencies for the localization of isolated sounds, and show that high-frequency content remains critical in cases where the target sound is masked by a spatially separated masker. In fact, when two sources of the same level are randomly located in space, these results show that a decrease in stimulus bandwidth from 16 to 12 kHz might result in a 30% increase in overall localization error. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIRECTIONAL hearing KW - AUDIO frequency KW - NOISE control KW - BANDWIDTHS KW - SOUNDS KW - AUDIOLOGY N1 - Accession Number: 46745291; Brungart, Douglas S. 1; Email Address: douglas.brungart@us.army.mil; Simpson, Brian D. 1; Affiliations: 1 : Air Force Research Laboratory, 2610 Seventh Street, WPAFB, Ohio 45433; Source Info: Dec2009, Vol. 126 Issue 6, p3199; Subject Term: DIRECTIONAL hearing; Subject Term: AUDIO frequency; Subject Term: NOISE control; Subject Term: BANDWIDTHS; Subject Term: SOUNDS; Subject Term: AUDIOLOGY; Number of Pages: 10p; Illustrations: 1 Black and White Photograph, 1 Diagram, 1 Chart, 10 Graphs; Document Type: Article L3 - 10.1121/1.3243309 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=46745291&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR ID - 2014-12694-002 AN - 2014-12694-002 AU - Patterson, Robert AU - Pierce, Byron AU - Bell, Herbert H. AU - Andrews, Dee AU - Winterbottom, Marc T1 - Training robust decision making in immersive environments. JF - Journal of Cognitive Engineering and Decision Making JO - Journal of Cognitive Engineering and Decision Making JA - J Cogn Eng Decis Mak Y1 - 2009///Win 2009 VL - 3 IS - 4 SP - 331 EP - 361 CY - US PB - Sage Publications SN - 1555-3434 AD - Patterson, Robert, Warfighter Readiness Research Division, Air Force Research Laboratory, 6030 S. Kent St., Building 570, Mesa, AZ, US, 85212 N1 - Accession Number: 2014-12694-002. Partial author list: First Author & Affiliation: Patterson, Robert; Warfighter Readiness Research Division, Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory, Mesa, AZ, US. Release Date: 20140602. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Automation; Environmental Psychology; Dual Process Models. Minor Descriptor: Decision Making; Implicit Learning. Classification: Engineering & Environmental Psychology (4000). Population: Human (10). Methodology: Literature Review. References Available: Y. Page Count: 31. Issue Publication Date: Win 2009. AB - We provide a review and analysis of much of the published literature on decision making that is relevant to the design of immersive environments. This review draws from the basic and applied literature in order to provide insight for the design of such synthetic environments. Included in this review are articles and books cited in other works, and articles and books obtained from an Internet search. Issues discussed are (a) an overview of immersive decision environments; (b) dual-process decision making; (c) training robust intuitive decision making; (d) combining analytical and intuitive processing in immersive environments; and (e) concluding remarks. For the development of robust decision making in immersive environments, intuitive reasoning should be emphasized by creating an immersive situation and by providing for the development of automatic processing through implicit learning, with the latter reinforced by explicit thought processes. Considerations of the literature on decision making will provide insight for future design solutions for immersive decision environments. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - decision making KW - dual process model KW - implicit learning KW - automatic processing KW - immersive environments KW - 2009 KW - Automation KW - Environmental Psychology KW - Dual Process Models KW - Decision Making KW - Implicit Learning KW - 2009 U1 - Sponsor: US Air Force, US. Grant: FA8650-05-D-6502. Other Details: Task Order 0037, to Link Simulation and Training, L-3 Communications. Recipients: No recipient indicated DO - 10.1518/155534309X12599553478836 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-12694-002&site=ehost-live&scope=site UR - robert.patterson@mesa.afmc.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-11390-006 AN - 2010-11390-006 AU - Lyons, Joseph B. AU - Swindler, Stephanie D. AU - Offner, Anne T1 - The impact of leadership on change readiness in the US military. JF - Journal of Change Management JO - Journal of Change Management Y1 - 2009/12// VL - 9 IS - 4 SP - 459 EP - 475 CY - United Kingdom PB - Taylor & Francis SN - 1469-7017 SN - 1479-1811 AD - Lyons, Joseph B., Air Force Research Laboratory, Sensemaking and Organizational Effectiveness Branch (AFRL/RHXS), 2698 G Street, Bldg 190, Wright-Patterson AFB, OH, US, 45433-7604 N1 - Accession Number: 2010-11390-006. Partial author list: First Author & Affiliation: Lyons, Joseph B.; Air Force Research Laboratory, Dayton, OH, US. Release Date: 20100816. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Leadership; Military Personnel; Organizational Change; Readiness to Change. Classification: Organizational Behavior (3660); Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 17. Issue Publication Date: Dec, 2009. Copyright Statement: Taylor & Francis. 2009. AB - The current study explored the concept of change leadership in a US military organization that was undergoing extensive organizational changes. Participants’ (N = 395) leadership perceptions, change readiness indices, and intentions to engage in the change were collected during an organizational assessment. Results indicated that change leadership from senior executives was most predictive of individuals’ reported change readiness for military officers and civilian personnel. In addition to change leadership from senior executives, general leadership was also predictive of change readiness for enlisted personnel. Both leadership and change readiness were significantly related to higher intentions to engage in the change initiative. The change readiness of personnel appeared to increase according to the stages outlined by the Transtheoretical Model of behavior change (TTM), thus suggesting that this may be a useful model for predicting intentions to engage in and support organizational change initiatives. Implications for government organizations and the US military are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - leadership KW - organizational change KW - change readiness KW - US military KW - 2009 KW - Leadership KW - Military Personnel KW - Organizational Change KW - Readiness to Change KW - 2009 DO - 10.1080/14697010903360665 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-11390-006&site=ehost-live&scope=site UR - joseph.lyons@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-06503-002 AN - 2010-06503-002 AU - Tripp, Lloyd D. AU - Warm, Joel S. AU - Matthews, Gerald AU - Chiu, Peter Y. AU - Bracken, R. Bruce T1 - On tracking the course of cerebral oxygen saturation and pilot performance during gravity-induced loss of consciousness. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2009/12// VL - 51 IS - 6 SP - 775 EP - 784 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Tripp, Lloyd D., Biosciences and Performance Division, Air Force Research Laboratory, WPAFB, 711 HPW/RHP, 2215 1st Street, Bldg. 33, OH, US, 45433 N1 - Accession Number: 2010-06503-002. PMID: 20415154 Partial author list: First Author & Affiliation: Tripp, Lloyd D.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20100510. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Aircraft Pilots; Cerebral Cortex; Consciousness States; Oxygen. Minor Descriptor: Performance. Classification: Human Factors Engineering (4010); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Dec, 2009. Publication History: Accepted Date: Dec 3, 2009; First Submitted Date: Apr 17, 2009. AB - Objective: The aim of this study was to track the course of cerebral tissue oxygen saturation (rSO₂) and pilot performance during an episode of gravity-induced loss of consciousness (GLOC). Background: GLOC, a major problem facing pilots of high-performance aircraft, is brought about by a sudden reduction in rSO₂ as a result of increased +Gz force. It consists of 24 s of complete functional impairment followed by a prolonged period of performance recovery. This study tested the hypothesis that delayed recovery in GLOC is caused by a slow return of rSO₂ following removal of the g-force that induced the episode. Method: GLOC was induced in U.S. Air Force personnel via a centrifuge with math and tracking tasks emulating flight performance. A near-infrared spectroscopy unit provided the rSO₂ measure. Results: Declines in rSO₂ from baseline pinpointed when pilots would cease active flight control and when GLOC would set in. Counter to expectation, rSO₂ returned to baseline levels shortly after the centrifuge came to a complete stop following GLOC onset. Nevertheless, performance deficits continued for 49.45 s thereafter. Conclusion: The prolonged performance recovery time in GLOC cannot be attributed to delays in the return of rSO₂. This finding explains why previous ergonomic efforts to shorten the duration of GLOC episodes by increasing the rate of return of rSO₂ have not been fruitful. Evidently, another approach is needed. Application: Such an approach might use the close linkage between loss of rSO₂, performance deterioration, and GLOC onset to develop a warning system that would permit pilots to take effective action to avoid GLOC incapacitation. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cerebral oxygen saturation KW - pilot's performance KW - loss of consciousness KW - air force personnel KW - 2009 KW - Air Force Personnel KW - Aircraft Pilots KW - Cerebral Cortex KW - Consciousness States KW - Oxygen KW - Performance KW - 2009 DO - 10.1177/0018720809359631 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-06503-002&site=ehost-live&scope=site UR - lloyd.tripp@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Mall, S. AU - Ouper, B. L. AU - Fielding, J. C. T1 - Compression Strength Degradation of Nanocomposites after Lightning Strike. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2009/11/15/ VL - 43 IS - 24 M3 - Article SP - 2987 EP - 3001 SN - 00219983 AB - This study investigated five conductive nanocomposites for their compressive strength degradation after subjecting them to a simulated lightning strike. These systems consisted of a ply of nickel-coated carbon woven fabric as lightning strike protection component besides the four plies of standard carbon fibers (AS4) fabric embedded in the epoxy (EPON 862). The other four systems had an additional protection system, which was nickel-nanostrand veil (NiNS), aligned buckypaper, random buckypaper, or mixed buckypaper made up of vapor-grown carbon fibers and single-walled nanotubes. All other buckypapers were made of single-walled nanotubes. Failure and damage mechanisms were also investigated. The ultimate compressive strength reduced by about 75-30% from a simulated lightning strike. This reduction as well as the damage was maximum with NiNS and minimum with random buckypaper. Damage from the lightning strike was related to the electrical conductivity and degradation in the compressive strength of the tested systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Compression testing -- Research KW - LIGHTNING KW - NANOCOMPOSITE materials KW - COMPOSITE materials KW - NANOSTRUCTURED materials KW - compression KW - damage mechanisms KW - lightening strike KW - nanocomposites N1 - Accession Number: 45222626; Mall, S. 1; Email Address: Shankar.Mall@afit.edu; Ouper, B. L. 1; Fielding, J. C. 2; Source Information: Nov2009, Vol. 43 Issue 24, p2987; Subject: MATERIALS -- Compression testing -- Research; Subject: LIGHTNING; Subject: NANOCOMPOSITE materials; Subject: COMPOSITE materials; Subject: NANOSTRUCTURED materials; Author-Supplied Keyword: compression; Author-Supplied Keyword: damage mechanisms; Author-Supplied Keyword: lightening strike; Author-Supplied Keyword: nanocomposites; Number of Pages: 15p; Illustrations: 1 Color Photograph, 4 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1177/0021998309345337 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=45222626&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Tandon, G. P. AU - Goecke, K. AU - Cable, K. AU - Baur, J. T1 - Durability Assessment of Styrene- and Epoxy-based Shape-memory Polymer Resins. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2009/11/15/ VL - 20 IS - 17 M3 - Article SP - 2127 EP - 2143 SN - 1045389X AB - The present study is a baseline assessment of the durability of styrene- and epoxy-based shape memory polymer resin materials being considered for morphing applications when exposed to service environment. The approach for the experimental evaluation is a measurement of the shape memory properties and elastomeric response before and after separate environmental exposure to (i) water at 49°C for 4 days, (ii) in lube oil at room temperature and at 49°C for 24 h, and (iii) after exposure to xenon arc (63°C, 18 min water and light/102 min light only) and spectral intensity of 0.3-0.4 watts/m2 for 125 cycles (250 h exposure time). Parameters being investigated include modulus in the rubbery and glassy state, stored strain, shape fixity, stress recovery ratio, and linear shape recovery. In addition, we monitor changes in specimen color, weight, and dimensions along with onset of damage due to conditioning and subsequent thermomechanical cycling. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STYRENE KW - POLYMERS KW - SYNTHETIC gums & resins KW - XENON KW - ELASTOMERS KW - conditioning KW - epoxy KW - fixity KW - recovery KW - shape memory KW - styrene KW - tension N1 - Accession Number: 45082771; Tandon, G. P. 1; Email Address: Gyaneshwar.Tandon@wpafb.af.mil; Goecke, K. 1; Cable, K. 2; Baur, J. 1; Affiliations: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate AFRL/RXBC, Wright-Patterson AFB, OH; 2: Cornerstone Research Group, Inc., Dayton, OH; Issue Info: Nov2009, Vol. 20 Issue 17, p2127; Subject Term: STYRENE; Subject Term: POLYMERS; Subject Term: SYNTHETIC gums & resins; Subject Term: XENON; Subject Term: ELASTOMERS; Author-Supplied Keyword: conditioning; Author-Supplied Keyword: epoxy; Author-Supplied Keyword: fixity; Author-Supplied Keyword: recovery; Author-Supplied Keyword: shape memory; Author-Supplied Keyword: styrene; Author-Supplied Keyword: tension; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325212 Synthetic Rubber Manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 325991 Custom Compounding of Purchased Resins; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 17p; Illustrations: 11 Charts, 5 Graphs; Document Type: Article L3 - 10.1177/1045389X09348255 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=45082771&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - GEN AU - Brissett, Wilson T1 - Edward Taylor's Public Devotions. JO - Early American Literature JF - Early American Literature Y1 - 2009/11// VL - 44 IS - 3 M3 - Essay SP - 457 EP - 487 SN - 00128163 AB - This essay discusses the literary and philosophical aesthetics of New England Puritan pastor Edward Taylor. The essay descries the intersection of Puritan religious and materialist cultures with Taylor's aesthetic sense, focusing on Taylor's book "Preparatory Meditations," a poetical devotional manual. Other subjects under discussion include the Puritan understanding of beauty and its relation to spiritual development and transformation, the social aspects of poetry and the ways in which the concept of beauty affected religious life in Massachusetts, and the poetical aspects of Taylor's writing. KW - AESTHETICS -- Religious aspects -- Christianity KW - AESTHETICS -- Social aspects KW - AMERICAN devotional literature KW - AMERICAN poetry -- Colonial period, ca. 1600-1775 KW - PURITANS KW - MASSACHUSETTS -- History -- Colonial period, ca. 1600-1775 KW - MASSACHUSETTS -- Social life & customs -- To 1775 KW - MASSACHUSETTS KW - TAYLOR, Edward, 1642-1729 KW - PREPARATORY Meditations (Poem : Taylor) N1 - Accession Number: 44810539; Brissett, Wilson 1; Affiliations: 1 : United States Air Force Academy; Source Info: Nov2009, Vol. 44 Issue 3, p457; Historical Period: ca 1680 to ca 1730; Subject Term: AESTHETICS -- Religious aspects -- Christianity; Subject Term: AESTHETICS -- Social aspects; Subject Term: AMERICAN devotional literature; Subject Term: AMERICAN poetry -- Colonial period, ca. 1600-1775; Subject Term: PURITANS; Subject Term: MASSACHUSETTS -- History -- Colonial period, ca. 1600-1775; Subject Term: MASSACHUSETTS -- Social life & customs -- To 1775; Subject: MASSACHUSETTS; Number of Pages: 31p; Document Type: Essay UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ahl&AN=44810539&site=ehost-live&scope=site DP - EBSCOhost DB - ahl ER - TY - JOUR T1 - Newly reported hypertension after military combat deployment in a large population-based study. AU - Granado, Nisara S. AU - Smith, Tyler C. AU - Swanson, G. Marie AU - Harris, Robin B. AU - Shahar, Eyal AU - Smith, Besa AU - Boyko, Edward J. AU - Wells, Timothy S. AU - Ryan, Margaret A. K. AU - Millennium Cohort Study Team JO - Hypertension (0194911X) JF - Hypertension (0194911X) Y1 - 2009/11// VL - 54 IS - 5 SP - 966 EP - 973 SN - 0194911X N1 - Accession Number: 45343337; Author: Granado, Nisara S.: 1 email: nisara,granado@med.navy.mil. Author: Smith, Tyler C.: 1 Author: Swanson, G. Marie: 2 Author: Harris, Robin B.: 3 Author: Shahar, Eyal: 3 Author: Smith, Besa: 1 Author: Boyko, Edward J.: 4 Author: Wells, Timothy S.: 5 Author: Ryan, Margaret A. K.: 6 Author: Millennium Cohort Study Team ; Author Affiliation: 1 Department of Defense Center for Deployment Health Research, Naval Health Research Center, San Diego, Calif.: 2 Department of Public Health, Indiana University School of Medicine, Indianapolis, Ind.: 3 Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, Ariz.: 4 Seattle Epidemiologic Research and Information Center, Veterans' Affairs Puget Sound Health Care System, Seattle, Wash.: 5 Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton Ohio: 6 Occupational Health Department, Naval Hospital Camp Pendleton, Camp Pendleton, Calif.; No. of Pages: 8; Language: English; Publication Type: journal article; Update Code: 20091121 N2 - High-stress situations, such as combat deployments, are a potential risk factor for hypertension. Although stress is postulated to increase blood pressure, the underlying role of stress on hypertension is not well established. We sought to determine the relations between combat deployment-induced stress and hypertension. The Millennium Cohort baseline questionnaire (2001-2003) was completed by 77,047 US active-duty and Reserve/National Guard members. Follow-up was completed by 55,021 responders approximately 3 years later (2004-2006). Multivariable logistic regression was used to estimate the 3-year risk of newly reported hypertension, adjusting for general and mental health, demographics, and occupational and behavioral characteristics. After applying exclusion criteria, our analyses included 36 061 service members. Subanalyses of deployers included 8829 participants. Newly reported hypertension was identified in 6.9% of the cohort between baseline and follow-up, many of whom had deployed on military operations in support of the conflicts in Iraq and Afghanistan. After adjusting, deployers who experienced no combat exposures were less likely to report hypertension than nondeployers (odds ratio: 0.77; 95% CI: 0.67 to 0.89). Among deployers, those reporting multiple combat exposures were 1.33 times more likely to report hypertension compared with noncombat deployers (95% CI: 1.07 to 1.65). Although military deployers, in general, had a lower incidence of hypertension than nondeployers, deployment with multiple stressful combat exposures appeared to be a unique risk factor for newly reported hypertension. ABSTRACT FROM AUTHOR KW - *HYPERTENSION KW - *STRESS (Physiology) KW - *COHORT analysis KW - COMBAT -- Physiological aspects KW - MILITARY personnel -- United States KW - LIFE change events KW - UNITED States KW - cohort studies KW - hypertension KW - incidence KW - military personnel KW - stressful events UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=45343337&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Mudaliar, Saba T1 - Some Issues With Using Radiative Transfer Approach to Scattering From Layered Random Media With Rough Interfaces. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2009/11// Y1 - 2009/11// VL - 57 IS - 11 M3 - Article SP - 3646 EP - 3654 SN - 0018926X AB - The radiative transfer (RT) approach is widely used in applications involving scattering from layered random media with rough interfaces. Although it has been successful in several disciplines it is well known that this approach involves certain approximations. In this paper these assumptions and approximations are reexamined. To enable this a statistical wave approach is employed to this problem and the governing equations for the first and second moments of the wave functions are derived. A transition is hence made to arrive at a system of equations corresponding to that of the RT approach. It is hence found that more conditions are implicitly involved in the RT approach than generally believed to be sufficient. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATIVE transfer KW - INTERFACES (Physical sciences) KW - APPROXIMATION theory KW - HYPOTHESIS KW - THEORY of equations KW - MULTIPLE scattering (Physics) N1 - Accession Number: 51450548; Source Information: Nov2009, Vol. 57 Issue 11, p3646; Subject Term: RADIATIVE transfer; Subject Term: INTERFACES (Physical sciences); Subject Term: APPROXIMATION theory; Subject Term: HYPOTHESIS; Subject Term: THEORY of equations; Subject Term: MULTIPLE scattering (Physics); Subject Term: ; Number of Pages: 9p; ; Document Type: Article; L3 - 10.1109/TAP.2009.2031913 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=51450548&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Fleming, Timothy P. AU - Mardahl, Peter J. T1 - Performance Improvements in the Relativistic Magnetron: The Effect of DC Field Perturbations. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2009/11// Y1 - 2009/11// VL - 37 IS - 11 M3 - Article SP - 2128 EP - 2138 SN - 00933813 AB - The effect of using a shaped or transparent cathode to enhance key performance parameters in the Michigan magnetron, such as output power, power efficiency, and mode purity, was examined using a massively parallel electromagnetic particle-in-cell code Improved Concurrent Electromagnetic Particle-In-Cell. In simulations, we saw a dramatic increase in the range of magnetic field and input voltage over which the magnetron functions, an increase in output power, an increase in efficiency, an elimination of mode competition, and immediate start-up for both the shaped and transparent cathodes relative to the standard cathode. These simulations also revealed that the mechanism that is responsible for the improved performance that accompanies the transparent cathode may not be RF-azimuthal-field penetration but rather perturbations in the "dc" field resulting from the design of the novel cathodes themselves. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - ELECTRIC power distribution -- Direct current KW - DIRECT currents KW - ELECTRIC circuits -- Direct current KW - ELECTRIC fields KW - MAGNETIC fields KW - FIELD theory (Physics) N1 - Accession Number: 45637370; Source Information: Nov2009, Vol. 37 Issue 11, p2128; Subject Term: MAGNETRONS; Subject Term: ELECTRIC power distribution -- Direct current; Subject Term: DIRECT currents; Subject Term: ELECTRIC circuits -- Direct current; Subject Term: ELECTRIC fields; Subject Term: MAGNETIC fields; Subject Term: FIELD theory (Physics); Subject Term: ; Number of Pages: 11p; ; Illustrations: 1 Black and White Photograph, 12 Graphs; ; Document Type: Article; L3 - 10.1109/TPS.2009.2030579 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=45637370&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Blake, William AU - Gotwald, Carl AU - Mayor, Michael AU - Cunningham, Thomas T1 - Lateral Stability of High Wing Configurations. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2009/11//Nov/Dec2009 Y1 - 2009/11//Nov/Dec2009 VL - 46 IS - 6 M3 - Article SP - 2176 EP - 2178 SN - 00218669 AB - The article focuses on a study which developed a closed-form expression for elliptically loaded wings that matches prior approximations for conventional configurations while also giving the correct trends for large body configurations. Lateral stability is influenced by the vertical position of a wing on a body. The results of a wind-tunnel test at the U.S. Air Force Academy Subsonic Wind Tunnel indicate that the Levacic method is superior over other approximation methods for determining the correct trend for large diameter-to-span ratio. KW - APPROXIMATION theory KW - AIRPLANE wings KW - DIAMETER (Geometry) KW - AERODYNAMIC load KW - WIND tunnels KW - UNITED States. Air Force KW - UNITED States N1 - Accession Number: 47799355; Source Information: Nov/Dec2009, Vol. 46 Issue 6, p2176; Subject Term: APPROXIMATION theory; Subject Term: AIRPLANE wings; Subject Term: DIAMETER (Geometry); Subject Term: AERODYNAMIC load; Subject Term: WIND tunnels; Subject Term: UNITED States. Air Force; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 3p; ; Illustrations: 1 Black and White Photograph, 3 Graphs; ; Document Type: Article; L3 - 10.2514/1.44911 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=47799355&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - JOO, JAMES J. AU - REICH, GREGORY W. AU - WESTFALL, JAMES T. T1 - Flexible Skin Development for Morphing Aircraft Applications via Topology Optimization. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2009/11// VL - 20 IS - 16 M3 - Article SP - 1969 EP - 1985 SN - 1045389X AB - This article describes the development of engineered composite skins for morphing aircraft applications. Some of these applications suggest that materials with low in-plane stiffness and relatively high out-of-plane stiffness may be required. To this end, a two-step design process has been developed in order to synthesize skins to meet these requirements. The first step in the process is to determine bulk material properties for the skin and the layout of attachments between the skin and underlying substructure. This results in a distribution of bulk properties across the skin. The second step utilizes these property values as constraints to match the found bulk property in a multi-phase material optimization in order to determine the layout of a set of microscopic multi-phase material unit cells. As a first attempt, a 2D engineered skin design using a proposed two-step process is demonstrated in this article, and material fabrication process using a rapid prototyping (RP) technique and test result are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES KW - RAPID prototyping KW - BULK solids KW - SOLID freeform fabrication KW - CELLS KW - flexible skin KW - homogenization method KW - morphing aircraft KW - multi-functional skin KW - topology optimization N1 - Accession Number: 45103030; JOO, JAMES J. 1; Email Address: james.joo@wpafb.af.mil; REICH, GREGORY W. 2; WESTFALL, JAMES T. 2; Affiliations: 1: University of Dayton Research Institute, Dayton, OH 45469, USA.; 2: Air Force Research Laboratory, WPAFB, OH 45433, USA.; Issue Info: Nov2009, Vol. 20 Issue 16, p1969; Thesaurus Term: AIRPLANES; Thesaurus Term: RAPID prototyping; Subject Term: BULK solids; Subject Term: SOLID freeform fabrication; Subject Term: CELLS; Author-Supplied Keyword: flexible skin; Author-Supplied Keyword: homogenization method; Author-Supplied Keyword: morphing aircraft; Author-Supplied Keyword: multi-functional skin; Author-Supplied Keyword: topology optimization; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 484232 Dry bulk materials trucking, long distance; NAICS/Industry Codes: 484222 Dry bulk materials trucking, local; Number of Pages: 17p; Document Type: Article L3 - 10.1177/1045389X09343026 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=45103030&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - GEN AU - CALHOUN, BYRON J. T1 - Captain Vere as Outsider and Insider: Military Leadership in Billy Budd, Sailor. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2009/11// Y1 - 2009/11// VL - 21 IS - 1/2 M3 - Literary Criticism SP - 1 EP - 10 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents a literary criticism of the book "Billy Budd, Sailor," by Herman Melville, focusing on the character of Captain Vere, the insider-outsider dichotomy of his place within the social dynamics of the story, and its implications on the concept of military leadership. Questions are addressed regarding the choices of Captain Vere in ship discipline and the moral hazards of flexibility and the rule of law. KW - CRITICISM KW - BILLY Budd (Book : Melville) KW - MELVILLE, Herman, 1819-1891 KW - COMMAND of troops -- Moral & ethical aspects KW - JUSTICE administration KW - MILITARY discipline N1 - Accession Number: 48170354; Source Information: 2009, Vol. 21 Issue 1/2, p1; Subject Term: CRITICISM; Subject Term: BILLY Budd (Book : Melville); Subject Term: MELVILLE, Herman, 1819-1891; Subject Term: COMMAND of troops -- Moral & ethical aspects; Subject Term: JUSTICE administration; Subject Term: MILITARY discipline; Subject Term: ; Number of Pages: 10p; ; Document Type: Literary Criticism; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=48170354&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - LINGLE, BRANDON T1 - Colby Buzzell's My War: An Outsider's Voice from Inside Iraq. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2009/11// Y1 - 2009/11// VL - 21 IS - 1/2 M3 - Literary Criticism SP - 11 EP - 20 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents a literary criticism of the book "My War: Killing Time in Iraq," by Colby Buzzell, and its manifestation as a 21st century picaresque narrative. Details are given defining the picaresque genre, noting its central theme of an "outsider" critiquing society through personal narrative. Buzzell's blogging of the Iraq War as described in his memoir is then analyzed within this framework. KW - CRITICISM KW - MY War: Killing Time in Iraq (Book) KW - BUZZELL, Colby KW - PICARESQUE literature -- History & criticism KW - AMERICAN soldiers' writings KW - IRAQ War, 2003-2011 -- American personal narratives KW - BLOGS N1 - Accession Number: 48170355; Source Information: 2009, Vol. 21 Issue 1/2, p11; Subject Term: CRITICISM; Subject Term: MY War: Killing Time in Iraq (Book); Subject Term: BUZZELL, Colby; Subject Term: PICARESQUE literature -- History & criticism; Subject Term: AMERICAN soldiers' writings; Subject Term: IRAQ War, 2003-2011 -- American personal narratives; Subject Term: BLOGS; Subject Term: ; Number of Pages: 10p; ; Document Type: Literary Criticism; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=48170355&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - MATHIAS, ELIZABETH T1 - A Memorial to Forgetting: Libbie Custer's re-vision of General Custer's legacy. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2009/11// Y1 - 2009/11// VL - 21 IS - 1/2 M3 - Article SP - 21 EP - 32 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents discussion concerning the dichotomy between the idealized figure of a hero and the practical realities of the individual, their motivations, and actions. The 19th century U.S. general George Armstrong Custer and his heroic legend within military history is analyzed as a case example. Details are given addressing the role of his wife Libbie Custer in promoting and advancing Custer's legacy and in facilitating the transition of the social perception of the man as a hero. KW - HEROES KW - CUSTER, George A. (George Armstrong), 1839-1876 KW - CUSTER, Elizabeth Bacon, 1842-1933 KW - COLLECTIVE memory KW - UNITED States -- Military history -- To 1900 KW - UNITED States N1 - Accession Number: 48170356; Source Information: 2009, Vol. 21 Issue 1/2, p21; Subject Term: HEROES; Subject Term: CUSTER, George A. (George Armstrong), 1839-1876; Subject Term: CUSTER, Elizabeth Bacon, 1842-1933; Subject Term: COLLECTIVE memory; Subject Term: UNITED States -- Military history -- To 1900; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 12p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=48170356&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - GOOLSBY, JESSE T1 - What My Dead Wife Should Know. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2009/11// Y1 - 2009/11// VL - 21 IS - 1/2 M3 - Short Story SP - 144 EP - 145 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents the short story "What My Dead Wife Should Know," by Jesse Goolsby. KW - WHAT My Dead Wife Should Know (Short story) KW - GOOLSBY, Jesse KW - SHORT story (Literary form) N1 - Accession Number: 48170372; Source Information: 2009, Vol. 21 Issue 1/2, p144; Subject Term: WHAT My Dead Wife Should Know (Short story); Subject Term: GOOLSBY, Jesse; Subject Term: SHORT story (Literary form); Subject Term: ; Number of Pages: 2p; ; Document Type: Short Story; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=48170372&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - MCGUIRE, THOMAS G. T1 - War, Tradition, Iconoclastic Talent: a conversation with Robert Mezey. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2009/11// Y1 - 2009/11// VL - 21 IS - 1/2 M3 - Interview SP - 215 EP - 235 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents an interview with the American poet and critic Robert Mezey. An introduction is given describing Mezey's accomplishments and place within the community of 20th century American poets. Subjects discussed include Mezey's views on the tradition of war poetry, the challenging nature of occasional political poetry, and highlights from his favorite works. KW - MEZEY, Robert -- Interviews KW - AMERICAN poets -- 20th century -- Interviews KW - WAR & literature KW - WAR poetry KW - OCCASIONAL verse N1 - Accession Number: 48170385; Source Information: 2009, Vol. 21 Issue 1/2, p215; Subject Term: MEZEY, Robert -- Interviews; Subject Term: AMERICAN poets -- 20th century -- Interviews; Subject Term: WAR & literature; Subject Term: WAR poetry; Subject Term: OCCASIONAL verse; Subject Term: ; Number of Pages: 21p; ; Document Type: Interview; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=48170385&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - MILLS, GARY T1 - Up-Armored. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2009/11// Y1 - 2009/11// VL - 21 IS - 1/2 M3 - Article SP - 299 EP - 301 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents a first person narrative describing the author putting on body armor and reflecting about war. KW - FIRST person narrative KW - BODY armor N1 - Accession Number: 48170397; Source Information: 2009, Vol. 21 Issue 1/2, p299; Subject Term: FIRST person narrative; Subject Term: BODY armor; Subject Term: ; Number of Pages: 3p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=48170397&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - LOYD, KRISTEN R. T1 - An England Worth Saving: The Domestication of World War II Propaganda in Pride and Prejudice. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2009/11// Y1 - 2009/11// VL - 21 IS - 1/2 M3 - Opinion SP - 352 EP - 359 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents the author's reflections regarding the 1940 film adaptation of the novel "Pride and Prejudice," by Jane Austen, and its depiction of World War II propaganda for U.S. audiences. Details are given describing the film's portrayal of British domestic life in an effort to advocate for U.S. involvement within the war to aid Great Britain. Further discussion is given relating to the theme of women in wartime. KW - PRIDE & Prejudice (Film) KW - AUSTEN, Jane, 1775-1817 KW - FILM adaptations -- History & criticism KW - WORLD War, 1939-1945 -- Propaganda KW - WOMEN in war N1 - Accession Number: 48170403; Source Information: 2009, Vol. 21 Issue 1/2, p352; Subject Term: PRIDE & Prejudice (Film); Subject Term: AUSTEN, Jane, 1775-1817; Subject Term: FILM adaptations -- History & criticism; Subject Term: WORLD War, 1939-1945 -- Propaganda; Subject Term: WOMEN in war; Subject Term: ; Number of Pages: 8p; ; Document Type: Opinion; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=48170403&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - PASQUANTONIO, SONJA T1 - I Dream My Brother Plays Baseball. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2009/11// Y1 - 2009/11// VL - 21 IS - 1/2 M3 - Book Review SP - 408 EP - 415 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "I Dream My Brother Plays Baseball," by Lisa L. Siedlarz. KW - I Dream My Brother Plays Baseball (Book) KW - SIEDLARZ, Lisa L. KW - POETRY (Literary form) KW - POETRY collections N1 - Accession Number: 48170415; Source Information: 2009, Vol. 21 Issue 1/2, p408; Subject Term: I Dream My Brother Plays Baseball (Book); Subject Term: SIEDLARZ, Lisa L.; Subject Term: POETRY (Literary form); Subject Term: POETRY collections; Subject Term: ; Number of Pages: 8p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=48170415&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Shi, Lei AU - Ermis, Ryan AU - Lam, Kan AU - Cowart, Jerry AU - Attar, Paul AU - Aust, Duncan T1 - Study on the debridement efficacy of formulated enzymatic wound debriding agents by in vitro assessment using artificial wound eschar and by an in vivo pig model. JO - Wound Repair & Regeneration JF - Wound Repair & Regeneration Y1 - 2009/11//Nov/Dec2009 VL - 17 IS - 6 M3 - Article SP - 853 EP - 862 SN - 10671927 AB - An in vitro efficacy study using newly developed artificial wound eschar (AWE) substrate was conducted for assessing enzyme dose response. The AWE substrate is prepared by the enzymatic conversion of fibrinogen to fibrin in the presence of collagen, fibrin, and elastin to form an insoluble planar matrix. AWE substrate was placed on Franz Diffusion Cells for continuously monitoring the debridement progress. A parallel in vivo study was performed using pig thermal-burn wounds. Papain at concentrations of 200, 400, 800, and 1,600 U/mg was used as the model debriding enzyme for both studies. The data from the first 5 hours of the in vitro testing showed that debriding activity increased as the enzyme concentration increased. The histological results of the in vivo biopsy samples showed that enzyme doses above 800 and 1,600 U/mg successfully achieved debridement on day 8, while lower treatment groups still contained eschar tissue. Using the histological measurement results (wound depth score) a dose response that correlated to the in vitro assessment was found. Granulation tissue maturity and reepithelialization displayed correlation with the enzyme dose. Results indicate that AWE substrate can be used to predict debridement efficacy in vitro when correlation to the in vivo assessment is achieved. [ABSTRACT FROM AUTHOR] AB - Copyright of Wound Repair & Regeneration is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEBRIDEMENT KW - SWINE as laboratory animals KW - FIBRINOGEN KW - EXTRACELLULAR matrix proteins KW - WOUND healing N1 - Accession Number: 44883568; Shi, Lei 1; Email Address: lei.shi@healthpoint.com; Ermis, Ryan 1; Lam, Kan 2; Cowart, Jerry 3; Attar, Paul 2; Aust, Duncan 1; Source Information: Nov/Dec2009, Vol. 17 Issue 6, p853; Subject: DEBRIDEMENT; Subject: SWINE as laboratory animals; Subject: FIBRINOGEN; Subject: EXTRACELLULAR matrix proteins; Subject: WOUND healing; Number of Pages: 10p; Illustrations: 1 Color Photograph, 2 Diagrams, 7 Charts, 2 Graphs; Document Type: Article L3 - 10.1111/j.1524-475X.2009.00545.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=44883568&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 2009-22430-009 AN - 2009-22430-009 AU - Hoffman, Stuart W. AU - Harrison, Catherine T1 - The interaction between psychological health and traumatic brain injury: A neuroscience perspective. T3 - Injured military veterans JF - The Clinical Neuropsychologist JO - The Clinical Neuropsychologist JA - Clin Neuropsychol Y1 - 2009/11// VL - 23 IS - 8 SP - 1400 EP - 1415 CY - United Kingdom PB - Taylor & Francis SN - 1385-4046 SN - 1744-4144 AD - Hoffman, Stuart W., DVBIC–Johnstown, 109 Sunray Drive, Johnstown, PA, US, 15905 N1 - Accession Number: 2009-22430-009. PMID: 19882478 Other Journal Title: Clinical Neuropsychologist. Partial author list: First Author & Affiliation: Hoffman, Stuart W.; Henry M. Jackson Foundation for the Advancement of Military Medicine, Defense and Veterans Brain Injury Center–Johnstown, Johnstown, PA, US. Release Date: 20100510. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Health; Military Personnel; Neurosciences; Posttraumatic Stress Disorder; Traumatic Brain Injury. Minor Descriptor: Combat Experience; Neuropsychological Assessment. Classification: Neurological Disorders & Brain Damage (3297); Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 16. Issue Publication Date: Nov, 2009. Copyright Statement: Psychology Press. 2009. AB - The occurrence of traumatic brain injury (TBI) and psychological health issues in the current theater of military operations has become a major factor in planning for the long-term healthcare of our wounded warriors. Post-traumatic stress disorder (PTSD) can co-exist with brain injury in military members who have been exposed to blasts. Specific areas of the brain may be more susceptible to damage from blasts. In particular, damage to the prefrontal cortex can lead to disinhibition of cerebral structures that control fear and anxiety. Reactive systemic inflammatory processes related to TBI may also impair psychological health. Impaired psychological health may lead to increased psychological distress that impedes brain repair due to the release of stress-related hormones. Since the external environment has been shown to exert a significant influence on the internal environment of the organism, enriching the external environment may well reduce anxiety and facilitate the neuroplasticity of brain cells, thus promoting recovery of function after TBI. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - psychological health KW - traumatic brain injury KW - neuroscience perspective KW - military operations KW - wounded warriors KW - 2009 KW - Health KW - Military Personnel KW - Neurosciences KW - Posttraumatic Stress Disorder KW - Traumatic Brain Injury KW - Combat Experience KW - Neuropsychological Assessment KW - 2009 DO - 10.1080/13854040903369433 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-22430-009&site=ehost-live&scope=site UR - shoffman@dvbic-lh.org DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Yakovlev, Vladislav V. AU - Petrov, Georgi I. AU - Zhang, Hao F. AU - Noojin, Gary D. AU - Denton, Michael L. AU - Thomas, Robert J. AU - Scully, Marlan O. T1 - Stimulated Raman scattering: old physics, new applications. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2009/10/15/ VL - 56 IS - 18/19 M3 - Article SP - 1970 EP - 1973 SN - 09500340 AB - Stimulated Raman scattering is a promising way of expanding the tunability of ultrafast lasers and is an exciting new biomedical imaging modality capable of selective excitation and chemically-specific diagnostics of molecular species. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN effect KW - LASERS KW - SCATTERING (Physics) KW - NONLINEAR optics KW - LIGHT -- Scattering KW - biomedical imaging KW - Raman KW - stimulated Raman KW - ultrashort laser pulses N1 - Accession Number: 49234322; Yakovlev, Vladislav V. 1; Email Address: yakovlev@uwm.edu; Petrov, Georgi I. 1; Zhang, Hao F. 2; Noojin, Gary D. 3; Denton, Michael L. 3; Thomas, Robert J. 4; Scully, Marlan O. 5,6; Affiliations: 1: Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA.; 2: Department of Electrical Engineering, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA.; 3: Life Sciences Research and Applications Department, San Antonio, TX 78228, USA.; 4: US Air Force Research Laboratory, Brooks City-Base, TX 78235, USA.; 5: Department of Physics, Texas A&M University, College Station, TX 77840, USA.; 6: Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA.; Issue Info: Oct2009, Vol. 56 Issue 18/19, p1970; Subject Term: RAMAN effect; Subject Term: LASERS; Subject Term: SCATTERING (Physics); Subject Term: NONLINEAR optics; Subject Term: LIGHT -- Scattering; Author-Supplied Keyword: biomedical imaging; Author-Supplied Keyword: Raman; Author-Supplied Keyword: stimulated Raman; Author-Supplied Keyword: ultrashort laser pulses; Number of Pages: 4p; Illustrations: 3 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1080/09500340903082671 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=49234322&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Shore, Robert A. AU - Yaghjian, Arthur D. T1 - Traveling Waves on Three-Dimensional Periodic Arrays of Two Different Alternating Magnetodielectric Spheres. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2009/10/02/Oct2009 Part 2 of 2 Y1 - 2009/10/02/Oct2009 Part 2 of 2 VL - 57 IS - 10 M3 - Article SP - 3077 EP - 3091 SN - 0018926X AB - An exact k — β (dispersion) equation to within the dipole scattering approximation has been obtained for a 3D array of two different alternating magnetodielectric spheres. The dispersion equation has the form of equating to zero the determinant of a system of four homogeneous equations in the normalized scattered field coefficients. Computationally efficient expressions are obtained for the coefficients of the homogeneous equation system as functions of the sphere radii, permittivities, and permeabilities, the free-space electrical separation distance of the array elements (kd), and the electrical separation distance (βd) for the traveling wave supported by the array. For a given value of kd and an array of lossless scatterers the determinant equation can be solved for real βd by a simple search procedure. For an array of lossy scatterers βd is complex and a more difficult minimization in the complex plane is required to solve the determinant equation. The solution to the dispersion equation also yields values for the effective permittivity and permeability of the array regarded as a continuous medium. Computations were performed to investigate the performance of two-sphere arrays of lossless dielectric spheres, with the permittivities and radii of the two different dielectric spheres composing the array chosen so that the first magnetic dipole resonant frequency of one set of spheres equals the first electric dipole resonant frequency of the second set of spheres. Although it is shown that arrays composed of two different alternating purely dielectric spheres can behave as isotropic DNG media unlike arrays of identical, dielectric spheres, the bandwidths are considerably narrower than those achievable with arrays of identical magnetodielectric spheres with appreciable permittivity and permeability close to each other. The practicality of using arrays of alternating two different purely dielectric spheres to fabricate DNG media depends on whether the narrow bandwidths are acceptable for the desired applications. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNA arrays KW - TRAVELING wave antennas KW - DIPOLE antennas KW - ELECTRIC circuits -- Alternating current KW - DIELECTRICS KW - MAGNETIC dipoles KW - METAMATERIALS KW - DISPERSION N1 - Accession Number: 44812661; Source Information: Oct2009 Part 2 of 2, Vol. 57 Issue 10, p3077; Subject Term: ANTENNA arrays; Subject Term: TRAVELING wave antennas; Subject Term: DIPOLE antennas; Subject Term: ELECTRIC circuits -- Alternating current; Subject Term: DIELECTRICS; Subject Term: MAGNETIC dipoles; Subject Term: METAMATERIALS; Subject Term: DISPERSION; Subject Term: ; Number of Pages: 15p; ; Document Type: Article; L3 - 10.1109/TAP.2009.2024495 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=44812661&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR T1 - Sexually Transmitted Infections and Prostate Cancer among Men in the U.S. Military. AU - Dennis, Leslie K. AU - Coughlin, Julie A. AU - McKinnon, Brittany C. AU - Wells, Timothy S. AU - Gaydos, Charlotte A. AU - Hamsikova, Eva AU - Gray, Gregory C. JO - Cancer Epidemiology, Biomarkers & Prevention JF - Cancer Epidemiology, Biomarkers & Prevention Y1 - 2009/10// VL - 18 IS - 10 SP - 2665 EP - 2671 SN - 10559965 N1 - Accession Number: 45369549; Author: Dennis, Leslie K.: 1 email: kslie-dennis@uiowa.edu. Author: Coughlin, Julie A.: 1 Author: McKinnon, Brittany C.: 1 Author: Wells, Timothy S.: 2 Author: Gaydos, Charlotte A.: 3 Author: Hamsikova, Eva: 4 Author: Gray, Gregory C.: 1 ; Author Affiliation: 1 Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa: 2 Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio: 3 Division of Infectious Diseases, Johns Hopkins University, Baltimore, Maryland: 4 Department of Experimental Virology, Institute of Hematology and Blood Transfusion, Prague, Czech Republic; No. of Pages: 7; Language: English; Publication Type: Article; Update Code: 20091123 N2 - The article presents a study that evaluates the association of sexually transmitted infections (STI) with prostate cancer in U.S. military personnel. The study is undertaken by a nested case-control design where serum samples from 534 personnel who served on active duty from September 1, 1993 to September 1, 2003 were examined. Study reveals that prostate cancer and serologic evidence of infections has no relation just before the reference date, but the former has been associated with HSV-2. KW - *SEXUALLY transmitted diseases KW - *DIAGNOSIS KW - *PROSTATE cancer KW - *SERUM KW - UNITED States. Army -- Medical examinations KW - HERPES simplex virus KW - SERODIAGNOSIS KW - UNITED States UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=45369549&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Marentette, Kenneth A. AU - Johnson, Alan W. AU - Mills, Lisa T1 - A measure of cross-training benefit versus job skill specialization JO - Computers & Industrial Engineering JF - Computers & Industrial Engineering Y1 - 2009/10// VL - 57 IS - 3 M3 - Article SP - 937 EP - 940 SN - 03608352 AB - Abstract: Given ever-higher labor costs, organizations should periodically assess the match of personnel skills and quantities with required duties. Consolidating similar functional specialties can improve efficiency by increasing staffing for high-demand jobs, or by identifying areas where staff may be reduced. However, such consolidation activities are often done anecdotally, and can potentially overlook successful skill pairings. We propose a model that enables an objective, repeatable skills consolidation assessment process. Our model—a cost/benefit ratio—identifies skill pairings which are likely to merge successfully, by comparing the costs of training to the benefits of increased staffing level efficiencies for these jobs. [Copyright &y& Elsevier] AB - Copyright of Computers & Industrial Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JOB skills KW - EXPERTISE KW - LABOR costs KW - INDUSTRIAL efficiency KW - LABOR supply KW - EMPLOYEE training KW - COST effectiveness KW - MATHEMATICAL models KW - Cost/benefit KW - Cross-training KW - Efficiency KW - Workforce assessment N1 - Accession Number: 44101501; Marentette, Kenneth A. 1; Email Address: Kenneth.marentette@pentagon.af.mil; Johnson, Alan W. 2; Email Address: Alan.johnson@afit.edu; Mills, Lisa 1; Email Address: lisa.mills@pentagon.af.mil; Affiliations: 1: Headquarters United States Air Force, 1235 S. Clark Street, Suite 301, Arlington, VA 22202, USA; 2: Air Force Institute of Technology, 2950 Hobson Way, Bldg 641, Wright-Patterson AFB, OH 45433, USA; Issue Info: Oct2009, Vol. 57 Issue 3, p937; Thesaurus Term: JOB skills; Thesaurus Term: EXPERTISE; Thesaurus Term: LABOR costs; Thesaurus Term: INDUSTRIAL efficiency; Thesaurus Term: LABOR supply; Thesaurus Term: EMPLOYEE training; Thesaurus Term: COST effectiveness; Thesaurus Term: MATHEMATICAL models; Author-Supplied Keyword: Cost/benefit; Author-Supplied Keyword: Cross-training; Author-Supplied Keyword: Efficiency; Author-Supplied Keyword: Workforce assessment; NAICS/Industry Codes: 611430 Professional and Management Development Training; NAICS/Industry Codes: 561320 Temporary Help Services; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.cie.2009.03.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=44101501&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Kosai, Hiroyuki AU - McNeal, Seana AU - Jordan, Brett AU - Scofield, James AU - Ray, Biswajit AU - Turgut, Zafer T1 - Coupled Inductor Characterization for a High Performance Interleaved Boost Converter. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2009/10// VL - 45 IS - 10 M3 - Article SP - 4812 EP - 4815 SN - 00189464 AB - Interleaved power converter topologies have received increasing attention in recent years for high power and high performance applications. The advantages of interleaved boost converters include increased efficiency, reduced size, reduced electromagnetic emission, faster transient response, and improved reliability. The front end inductors in an interleaved boost converter are magnetically coupled to improve electrical performance and reduce size and weight. Compared to a direct coupled configuration, inverse coupling provides the advantages of lower inductor ripple current and negligible dc flux levels in the core. In this paper, we explore the possible advantages of core geometry on core losses and converter efficiency. Analysis of FEA simulation and empirical characterization data indicates a potential superiority of a square core, with symmetric 45° energy storage corner gaps, for providing both ac flux balance and maximum dc flux cancellation when wound in an inverse coupled configuration. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CASCADE converters KW - ELECTRIC inductors KW - MAGNETIC flux KW - MAGNETIC cores KW - GEOMETRY KW - TOPOLOGY KW - ENERGY storage KW - Interleaved boost converter KW - magnetic core KW - magnetic flux N1 - Accession Number: 44704197; Kosai, Hiroyuki 1; Email Address: hiroyuki.kosai@wpafb.af.mil; McNeal, Seana 2; Jordan, Brett 2; Scofield, James 2; Ray, Biswajit 3; Turgut, Zafer 1; Affiliations: 1: UES, Inc., Dayton, OH 45432 USA; 2: Air Force Research Laboratory, Wright Patterson Air Force Base, WPAFB, OH 45433 USA; 3: Bloomsburg University of Pennsylvania, Bloomsburg, PA 17815 USA; Issue Info: Oct2009, Vol. 45 Issue 10, p4812; Subject Term: CASCADE converters; Subject Term: ELECTRIC inductors; Subject Term: MAGNETIC flux; Subject Term: MAGNETIC cores; Subject Term: GEOMETRY; Subject Term: TOPOLOGY; Subject Term: ENERGY storage; Author-Supplied Keyword: Interleaved boost converter; Author-Supplied Keyword: magnetic core; Author-Supplied Keyword: magnetic flux; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; Number of Pages: 4p; Illustrations: 3 Charts, 4 Graphs; Document Type: Article L3 - 10.1109/TMAG.2009.2024639 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=44704197&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Ferrara, Matthew AU - Arnold, Gregory AU - Stuff, Mark T1 - Shape and Motion Reconstruction from 3D-to-1D Orthographically Projected Data via Object-Image Relations. JO - IEEE Transactions on Pattern Analysis & Machine Intelligence JF - IEEE Transactions on Pattern Analysis & Machine Intelligence J1 - IEEE Transactions on Pattern Analysis & Machine Intelligence PY - 2009/10// Y1 - 2009/10// VL - 31 IS - 10 M3 - Article SP - 1906 EP - 1912 SN - 01628828 AB - This paper describes an invariant-based shape- and motion reconstruction algorithm for 3D-to-1D orthographically projected range data taken from unknown viewpoints. The algorithm exploits the object-image relation that arises in echo-based range data and represents a simplification and unification of previous work in the literature. Unlike one proposed approach, this method does not require uniqueness constraints, which makes its algorithmic form independent of the translation removal process (centroid removal, range alignment, etc.). The new algorithm, which simultaneously incorporates every projection and does not use an initialization in the optimization process, requires fewer calculations and is more straightforward than the previous approach. Additionally, the new algorithm is shown to be the natural extension of the approach developed by Tomasi and Kanade for 3D-to-2D orthographically projected data and is applied to a realistic inverse synthetic aperture radar imaging scenario, as welt as experiments with varying amounts of aperture diversity and noise. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Pattern Analysis & Machine Intelligence is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMAGE reconstruction KW - ALGORITHMS KW - ORTHOGRAPHIC projection KW - SYNTHETIC aperture radar KW - MATHEMATICAL optimization KW - IMAGING systems N1 - Accession Number: 44679602; Source Information: Oct2009, Vol. 31 Issue 10, p1906; Subject Term: IMAGE reconstruction; Subject Term: ALGORITHMS; Subject Term: ORTHOGRAPHIC projection; Subject Term: SYNTHETIC aperture radar; Subject Term: MATHEMATICAL optimization; Subject Term: IMAGING systems; Subject Term: ; Number of Pages: 7p; ; Illustrations: 4 Graphs; ; Document Type: Article; L3 - 10.1109/TPAMI.2008.294 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=44679602&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Davidson, Sean A. AU - Gilkey, Robert H. AU - Colburn, H. Steven AU - Carney, Laurel H. T1 - Diotic and dichotic detection with reproducible chimeric stimuli. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2009/10// VL - 126 IS - 4 M3 - Article SP - 1889 EP - 1905 SN - 00014966 AB - Subject responses were measured for individual narrow-band reproducible stimuli in a low-frequency tone-in-noise detection task. Both N0S0 and N0Sπ conditions were examined. The goal of the experiment was to determine the relative importance of envelope and fine-structure cues. Therefore, chimeric stimuli were generated by recombining envelopes and fine structures from different reproducible stimuli. Detection judgments for noise-alone or tone-plus-noise stimuli that had common envelopes but different fine structures or common fine structures but different envelopes were compared. The results showed similar patterns of responses to stimuli that shared envelopes, indicating the importance of envelope cues; however, fine-structure cues were also shown to be important. The relative weight assigned to envelope and fine-structure cues varied across subjects and across interaural conditions. The results also indicated that envelope and fine-structure information are not processed independently. Implications for monaural and binaural models of masking are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DICHOTIC listening tests KW - AUDIOMETRY KW - NOISE KW - TONE (Phonetics) KW - BINAURAL hearing aids N1 - Accession Number: 44483683; Davidson, Sean A. 1; Gilkey, Robert H. 2; Colburn, H. Steven 3; Carney, Laurel H. 4; Email Address: laurel.carney@rochester.edu; Affiliations: 1 : Department of Biomedical and Chemical Engineering, Institute for Sensory Research, Syracuse University, 621 Skytop Road, Syracuse, New York 13244; 2 : Department of Psychology, Wright State University, Dayton, Ohio 45435 and Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; 3 : Boston University Hearing Research Center, Department of Biomedical Engineering, Boston University, 44 Cummington Street, Boston, Massachusetts 02215; 4 : Department of Biomedical and Chemical Engineering, Department of Electrical Engineering and Computer Science, and The Institute for Sensory Research, Syracuse University, 621 Skytop Road, Syracuse, New York 13244; Source Info: Oct2009, Vol. 126 Issue 4, p1889; Subject Term: DICHOTIC listening tests; Subject Term: AUDIOMETRY; Subject Term: NOISE; Subject Term: TONE (Phonetics); Subject Term: BINAURAL hearing aids; Number of Pages: 17p; Illustrations: 2 Diagrams, 8 Charts, 2 Graphs; Document Type: Article L3 - 10.1121/1.3203996 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=44483683&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR AU - Davidson, Sean A. AU - Gilkey, Robert H. AU - Colburn, H. Steven AU - Carney, Laurel H. T1 - An evaluation of models for diotic and dichotic detection in reproducible noises. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2009/10// VL - 126 IS - 4 M3 - Article SP - 1906 EP - 1925 SN - 00014966 AB - Several psychophysical models for masked detection were evaluated using reproducible noises. The data were hit and false-alarm rates from three psychophysical studies of detection of 500-Hz tones in reproducible noise under diotic (N0S0) and dichotic (N0Sπ) conditions with four stimulus bandwidths (50, 100, 115, and 2900 Hz). Diotic data were best predicted by an energy-based multiple-detector model that linearly combined stimulus energies at the outputs of several critical-band filters. The tone-plus-noise trials in the dichotic data were best predicted by models that linearly combined either the average values or the standard deviations of interaural time and level differences; however, these models offered no predictions for noise-alone responses. The decision variables of more complicated temporal models, including the models of Dau et al. [(1996a). J. Acoust. Soc. Am. 99, 3615–3622] and Breebaart et al. [(2001a). J. Acoust. Soc. Am. 110, 1074–1088], were weakly correlated with subjects’ responses. Comparisons of the dependencies of each model on envelope and fine-structure cues to those in the data suggested that dependence upon both envelope and fine structure, as well as an interaction between them, is required to predict the detection results. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC systems KW - ELECTRONIC circuit design KW - DIGITAL communications KW - ENGINEERING instruments KW - ARCHITECTURAL acoustics KW - PHYSICAL measurements KW - SOUND measurement N1 - Accession Number: 44483658; Davidson, Sean A. 1; Gilkey, Robert H. 2; Colburn, H. Steven 3; Carney, Laurel H. 4; Email Address: laurel.carney@rochester.edu; Affiliations: 1 : Department of Biomedical and Chemical Engineering, Institute for Sensory Research, Syracuse University, 621 Skytop Road, Syracuse, New York 13244; 2 : Department of Psychology, Wright State University, Dayton, Ohio 45435 and Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; 3 : Department of Biomedical Engineering, Boston University Hearing Research Center, Boston University, 44 Cummington Street, Boston, Massachusetts 02215; 4 : Department of Biomedical and Chemical Engineering, Department of Electrical Engineering and Computer Science, and The Institute for Sensory Research, Syracuse University, 621 Skytop Road, Syracuse, New York 13244; Source Info: Oct2009, Vol. 126 Issue 4, p1906; Subject Term: ELECTRONIC systems; Subject Term: ELECTRONIC circuit design; Subject Term: DIGITAL communications; Subject Term: ENGINEERING instruments; Subject Term: ARCHITECTURAL acoustics; Subject Term: PHYSICAL measurements; Subject Term: SOUND measurement; Number of Pages: 20p; Illustrations: 2 Diagrams, 7 Charts, 8 Graphs; Document Type: Article L3 - 10.1121/1.3206583 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=44483658&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR ID - 2009-16299-006 AN - 2009-16299-006 AU - Zor, R. AU - Keren, H. AU - Hermesh, H. AU - Szechtman, H. AU - Mort, J. AU - Eilam, D. T1 - Obsessive–compulsive disorder: A disorder of pessimal (non-functional) motor behavior. JF - Acta Psychiatrica Scandinavica JO - Acta Psychiatrica Scandinavica JA - Acta Psychiatr Scand Y1 - 2009/10// VL - 120 IS - 4 SP - 288 EP - 298 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0001-690X SN - 1600-0447 AD - Eilam, D., Department of Zoology, Tel-Aviv University, Ramat-Aviv, Israel, 69 978 N1 - Accession Number: 2009-16299-006. PMID: 19291081 Partial author list: First Author & Affiliation: Zor, R.; Department of Zoology, Tel-Aviv University, Ramat-Aviv, Israel. Other Publishers: Blackwell Publishing. Release Date: 20100301. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Motor Performance; Obsessive Compulsive Disorder. Classification: Neuroses & Anxiety Disorders (3215). Population: Human (10); Male (30); Female (40); Outpatient (60). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 11. Issue Publication Date: Oct, 2009. Publication History: Accepted Date: Feb 11, 2009. Copyright Statement: John Wiley & Sons A/S. 2009. AB - Objective: To determine whether in addition to repetitiveness, the motor rituals of patients with obsessive–compulsive disorder (OCD) involve reduced functionality due to numerous and measurable acts that are irrelevant and unnecessary for task completion. Method: Comparing motor rituals of OCD patients with behavior of non-patient control individuals who were instructed to perform the same motor task. Results: Obsessive–compulsive disorder behavior comprises abundant acts that were not performed by the controls. These acts seem unnecessary or even irrelevant for the task that the patients were performing, and therefore are termed 'non-functional'. Non-functional acts comprise some 60% of OCD motor behavior. Moreover, OCD behavior consists of short chains of functional acts bounded by long chains of non-functional acts. Conclusion: The abundance of irrelevant or unnecessary acts in OCD motor rituals represents reduced functionality in terms of task completion, typifying OCD rituals as pessimal behavior (antonym of optimal behavior). (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - obsessive compulsive disorder KW - motor behavior KW - repetitiveness KW - 2009 KW - Motor Performance KW - Obsessive Compulsive Disorder KW - 2009 U1 - Sponsor: TAU, Adams Supercenter for Brain Studies, Basic Research Program. Recipients: No recipient indicated U1 - Sponsor: US Air Force Office of Scientific Research, US. Recipients: No recipient indicated DO - 10.1111/j.1600-0447.2009.01370.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-16299-006&site=ehost-live&scope=site UR - ORCID: 0000-0003-3986-4482 UR - UR - eilam@post.tau.ac.il DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2009-23278-035 AN - 2009-23278-035 AU - Klein, Helen Altman AU - Lin, Mei-Hua AU - Radford, Mark AU - Masuda, Takahiko AU - Choi, Incheol AU - Lien, Yunnwen AU - Yeh, YeiYuh AU - Boff, Kenneth R. T1 - Cultural differences in cognition: Rosetta Phase I. JF - Psychological Reports JO - Psychological Reports JA - Psychol Rep Y1 - 2009/10// VL - 105 IS - 2 SP - 659 EP - 674 CY - US PB - Psychological Reports SN - 0033-2941 SN - 1558-691X AD - Klein, Helen Altman, Wright State University, 335 Fawcett Hall, 3640 Colonel Glenn Highway, Dayton, OH, US, 45435-0001 N1 - Accession Number: 2009-23278-035. PMID: 19928627 Partial author list: First Author & Affiliation: Klein, Helen Altman; Wright State University, Dayton, OH, US. Other Publishers: Sage Publications. Release Date: 20100802. Correction Date: 20160905. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cognition; Cross Cultural Differences; Reasoning. Classification: Culture & Ethnology (2930). Population: Human (10). Location: Japan; Republic of Korea; Taiwan; US. Age Group: Adolescence (13-17 yrs) (200); Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Tests & Measures: Attribution Complexity Scale; Framed Line Test. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 16. Issue Publication Date: Oct, 2009. Publication History: Accepted Date: Aug 7, 2009. Copyright Statement: Psychological Reports. 2009. AB - Cultural differences in cognition are important during multinational commercial, military, and humanitarian operations. The Rosetta Project addresses definition and measurement of key cognitive dimensions. Six potential diagnostic measures related to Analytic-Holistic reasoning were assessed: the Exclusion Task, the Attribution Complexity Scale, the Syllogism Task, Categorization, the Framed Line Test, and the Facial Expression Task. 379 participants' ages ranged from 17 to 24 years (M = 19.8, SD = 1.4). 64.6% were women; Eastern Asian groups (Japan, Korea, and Taiwan) were assumed to have Holistic reasoning tendencies, and those from a Western group (USA) were assumed to have Analytic tendencies. Participants were recruited from subject pools in psychology using the procedures of each university. Results on the Exclusion and Categorization Tasks confirmed hypothesized differences in Analytic-Holistic reasoning. The Attribution Complexity Scale and the Facial Expression Task identified important differences among the four groups. Outcomes on the final two tasks were confounded by unrelated group differences, making comparisons difficult. Building on this exploratory study, Rosetta Phase II will include additional groups and cognitive tasks. Measures of complex cognition are also incorporated to link findings to the naturalistic contexts. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cultural differences KW - cognition KW - Rosetta Project KW - analytic holistic reasoning KW - 2009 KW - Cognition KW - Cross Cultural Differences KW - Reasoning KW - 2009 U1 - Sponsor: United States Air Force Research Laboratory, Human Effectiveness Directorate, US. Recipients: No recipient indicated DO - 10.2466/pr0.105.2.659-674 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-23278-035&site=ehost-live&scope=site UR - helen.klein@wright.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2009-14375-008 AN - 2009-14375-008 AU - Lyons, Joseph B. AU - Schneider, Tamera R. T1 - The effects of leadership style on stress outcomes. JF - The Leadership Quarterly JO - The Leadership Quarterly JA - Leadersh Q Y1 - 2009/10// VL - 20 IS - 5 SP - 737 EP - 748 CY - Netherlands PB - Elsevier Science SN - 1048-9843 AD - Lyons, Joseph B., Air Force Research Laboratory, Logistics Readiness Branch (AFRL/RHAL), 2698 G Street, Bldg 190, Wright-Patterson AFB, OH, US, 45433-7604 N1 - Accession Number: 2009-14375-008. Partial author list: First Author & Affiliation: Lyons, Joseph B.; Air Force Research Laboratory, OH, US. Release Date: 20091019. Correction Date: 20151207. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Job Performance; Leadership Style; Stress Reactions; Transformational Leadership. Minor Descriptor: Psychodynamics; Self-Efficacy; Social Support; Task Complexity; Transactional Leadership. Classification: Industrial & Organizational Psychology (3600). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adolescence (13-17 yrs) (200); Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Positive and Negative Affect Scale DOI: 10.1037/t06070-000; Inventory of Socially Supportive Behaviors DOI: 10.1037/t02399-000; Personal Efficacy Beliefs Scale DOI: 10.1037/t08689-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: Oct, 2009. AB - The present study manipulated transformational and transactional leadership styles to examine their influence on individuals' performance on a stressful task, and on perceived social support, self-efficacy beliefs, emotions, and stressor appraisals. In addition, this study examined whether these variables mediated the relationship between leadership style and performance. Two hundred fourteen participants viewed video instructions for a stressful task presented by an actor depicting one of three leadership styles (transformational, transactional-contingent reward, and transactional-management by exception). Participants' psychological, emotional, and motivational responses to the videos were assessed prior to their engagement with the task. The transformational leadership condition was associated with enhanced task performance, higher social support perceptions, greater efficacy beliefs, lower negative affect, and lower threat appraisals compared to the transactional conditions. Causal modeling revealed that leadership style had a direct, rather than indirect, effect on task performance. The present research extends leadership research by providing an experimental evaluation of the costs/benefits of transformational and transactional leadership under stressful task conditions. Some of the results parallel those from correlational field studies, thus corroborating transformational leadership theory while other results diverge from theory, but present opportunities for future research. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - transformational leadership condition KW - transactional leadership KW - task stress response KW - social support KW - self efficacy KW - emotions KW - 2009 KW - Job Performance KW - Leadership Style KW - Stress Reactions KW - Transformational Leadership KW - Psychodynamics KW - Self-Efficacy KW - Social Support KW - Task Complexity KW - Transactional Leadership KW - 2009 DO - 10.1016/j.leaqua.2009.06.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-14375-008&site=ehost-live&scope=site UR - joseph.lyons@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Ortensie, R. Ray T1 - Contrails over the Mojave: The Golden Age of Jet Flight Testing at Edwards Air Force Base. JO - Air Power History JF - Air Power History J1 - Air Power History PY - 2009///Fall2009 Y1 - 2009///Fall2009 VL - 56 IS - 3 M3 - Book Review SP - 59 EP - 59 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "Contrails over the Mojave: The Golden Age of Jet Flight Testing at Edwards Air Force Base," by George J. Marrett. KW - CONTRAILS Over the Mojave: The Golden Age of Jet Flight Testing at Edwards Air Force Base (Book) KW - MARRETT, George J. KW - JET planes -- Flight testing KW - NONFICTION N1 - Accession Number: 44351407; Source Information: Fall2009, Vol. 56 Issue 3, p59; Subject Term: CONTRAILS Over the Mojave: The Golden Age of Jet Flight Testing at Edwards Air Force Base (Book); Subject Term: MARRETT, George J.; Subject Term: JET planes -- Flight testing; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 1/2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=44351407&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ortensie, R. Ray T1 - Air Power in the New Counter-insurgency Era: The Strategic Importance of USAF Advisory and Assistance Missions. JO - Air Power History JF - Air Power History J1 - Air Power History PY - 2009///Fall2009 Y1 - 2009///Fall2009 VL - 56 IS - 3 M3 - Book Review SP - 62 EP - 63 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "Air Power in the New Counter-insurgency Era: The Strategic Importance of USAF Advisory and Assistance Missions," by Alan J. Vick. KW - AIR Power in the New Counterinsurgency Era: The Strategic Importance of USAF Advisory & Assistance Missions (Book) KW - VICK, Alan J. KW - AIR warfare KW - NONFICTION N1 - Accession Number: 44351414; Source Information: Fall2009, Vol. 56 Issue 3, p62; Subject Term: AIR Power in the New Counterinsurgency Era: The Strategic Importance of USAF Advisory & Assistance Missions (Book); Subject Term: VICK, Alan J.; Subject Term: AIR warfare; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=44351414&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - CASE AU - Pekmezci, Murat AU - Keeney, James AU - Schutz, Amanda AU - Clohisy, John C. T1 - Retention of a Well-Fixed Acetabular Component in the Setting of Massive Acetabular Osteolysis and Pelvic Discontinuity A: Case Report. JO - Journal of Bone & Joint Surgery, American Volume JF - Journal of Bone & Joint Surgery, American Volume Y1 - 2009/09// VL - 91 IS - 9 M3 - Case Study SP - 2232 EP - 2237 SN - 00219355 AB - The article presents a case study about a sixty-one-year-old woman with a right-sided pain nine years after a right primary total hip arthroplasty. She states that the pain was getting worse with activity and improved with rest. She also had a history of cholecystectomy, hernia repairs and right knee replacement. The article discusses periacetabular osteolysis and with a treatment of bone stock restoration and stable acetabular fixation. KW - TOTAL hip replacement KW - ARTHROPLASTY KW - CHOLECYSTECTOMY KW - BONE resorption N1 - Accession Number: 44137379; Pekmezci, Murat 1; Keeney, James 2; Schutz, Amanda 3; Clohisy, John C. 3; Email Address: jclohisy@wustl.edu; Source Information: Sep2009, Vol. 91 Issue 9, p2232; Subject: TOTAL hip replacement; Subject: ARTHROPLASTY; Subject: CHOLECYSTECTOMY; Subject: BONE resorption; Number of Pages: 6p; Illustrations: 2 Color Photographs, 5 Black and White Photographs; Document Type: Case Study L3 - 10.2106/JBJS.H.01336 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=44137379&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - JOO, JAMES J. AU - SANDERS, BRIAN AU - BYRD, LARRY W. AU - HANEY, MARK A. T1 - High Conductive Load-Bearing Sensorcraft Skin Design for Thermal Energy Transport and Harvesting. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2009/09// VL - 20 IS - 13 M3 - Article SP - 1573 EP - 1586 SN - 1045389X AB - This article introduces the design process of a multi-functional skin structure for thermal energy transport and load bearing by using topology optimization. A single cell with periodic boundary conditions in the in-plane direction is used as a design space so that the final single-cell design can be repeated to construct a continuous sheet of material. The newly engineered skin is developed using two materials to meet two required functionalities of a Sensorcraft wing skin; one is to maximize the conductivity of the skin in thickness direction in order to dissipate internal heat into the air, sink, and minimize the inside skin surface temperature passively, thereby, allowing the thermoelectric device to operate at an optimum condition. The other is to maximize the in-plane stiffness to provide the load-bearing capability of the skin to an external load such as torsion. A multi-functional optimization scheme using a linear combination of two objective functions with weights is used to find the optimal layout of the two materials. A specimen was manufactured and multiple-cell analysis of aluminum block, plug configuration, and optimal configuration was conducted to compare the temperature-convergence history according to the number of cells. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TORSION KW - STRAINS & stresses (Mechanics) KW - ALUMINUM silicates KW - HEAT storage KW - THERMODYNAMICS KW - ELASTIC solids KW - DEFORMATIONS (Mechanics) KW - energy harvesting KW - multi-functional skin KW - thermal energy transport KW - topology optimization N1 - Accession Number: 43933401; JOO, JAMES J. 1; Email Address: james.joo@wpafb.af.mil; SANDERS, BRIAN 2; BYRD, LARRY W. 3; HANEY, MARK A. 3; Affiliations: 1: Aerospace Mechanics Division, University of Dayton Research Institute, Dayton, OH 45469, USA.; 2: Air Combat Command, Langley AFB, VA, 23665, USA.; 3: Air Force Research Laboratory, WPAFB, OH, 45433, USA.; Issue Info: Sep2009, Vol. 20 Issue 13, p1573; Subject Term: TORSION; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ALUMINUM silicates; Subject Term: HEAT storage; Subject Term: THERMODYNAMICS; Subject Term: ELASTIC solids; Subject Term: DEFORMATIONS (Mechanics); Author-Supplied Keyword: energy harvesting; Author-Supplied Keyword: multi-functional skin; Author-Supplied Keyword: thermal energy transport; Author-Supplied Keyword: topology optimization; Number of Pages: 14p; Document Type: Article L3 - 10.1177/1045389X09335616 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=43933401&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Heimbuch, B.K. AU - Kinney, K. AU - Nichols, B. AU - Wander, J.D. T1 - The Dry Aerosol Deposition Device (DADD): An instrument for depositing microbial aerosols onto surfaces JO - Journal of Microbiological Methods JF - Journal of Microbiological Methods Y1 - 2009/09// VL - 78 IS - 3 M3 - Article SP - 255 EP - 259 SN - 01677012 AB - Abstract: Concerns surrounding the contamination of infrastructure and equipment with biowarfare agents have led to the development of antimicrobial surfaces/coatings that are designed to “self-sterilize.” Surfaces will likely be contaminated via an aerosol exposure and thus antimicrobial efficacy measurements should also be performed using biological aerosols. Standard methods that use microbial agents suspended in aqueous buffers may provide misleading results that overestimate the performance of the surface. A settling chamber is the most common instrument for applying biological aerosols to surfaces. However, settling chambers have some drawbacks (e.g., slow loading times, large footprint, variable loading, etc.) that make them undesirable for many applications. We have developed a Dry Aerosol Deposition Device (DADD) that uses impaction rather than settling to load surfaces with biological aerosols. The use of impaction allows for rapid and highly reproducible loading of microorganisms onto surfaces. We have demonstrated that the DADD can deliver both Bacillus atrophaeus spores and Staphylococcus aureus vegetative cells to glass coupons at concentrations exceeding 1×104 CFU/cm2. The average coefficient of variation (CV) for sample-to-sample loading within an experiment was 13.6% for spores and 6.1% for S. aureus cells. The DADD is also a relatively simple and inexpensive device that can easily be contained within a 4-foot biological safety cabinet. [Copyright &y& Elsevier] AB - Copyright of Journal of Microbiological Methods is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Aerosols (Sprays) -- Environmental aspects KW - Atmospheric deposition KW - Microbial contamination KW - Biological weapons KW - Anti-infective agents KW - Scientific apparatus & instruments KW - Surfaces (Technology) KW - Surface coatings KW - Bioaerosol KW - Deposition KW - Method KW - Microorganism KW - Particle KW - Spore N1 - Accession Number: 43870242; Heimbuch, B.K. 1; Email Address: brian.heimbuch.ctr@tyndall.af.mil; Kinney, K. 1; Email Address: kimberly.kinney.ctr@tyndall.af.mil; Nichols, B. 1; Email Address: bob.nichols.ctr@tyndall.af.mil; Wander, J.D. 2; Email Address: joe.wander@tyndall.af.mil; Affiliations: 1: Applied Research Associates, 139 Barnes Drive, Suite 2, Tyndall Air Force Base, FL 32403, United States; 2: Air Force Research Laboratory, RXQL, 139 Barnes Drive, Suite 2, Tyndall Air Force Base, FL 32403, United States; Issue Info: Sep2009, Vol. 78 Issue 3, p255; Thesaurus Term: Aerosols (Sprays) -- Environmental aspects; Thesaurus Term: Atmospheric deposition; Thesaurus Term: Microbial contamination; Thesaurus Term: Biological weapons; Thesaurus Term: Anti-infective agents; Subject Term: Scientific apparatus & instruments; Subject Term: Surfaces (Technology); Subject Term: Surface coatings; Author-Supplied Keyword: Bioaerosol; Author-Supplied Keyword: Deposition; Author-Supplied Keyword: Method; Author-Supplied Keyword: Microorganism; Author-Supplied Keyword: Particle; Author-Supplied Keyword: Spore; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 417930 Professional machinery, equipment and supplies merchant wholesalers; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.mimet.2009.06.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=43870242&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 105413481 T1 - New Prescription Drug Labeling Regulations and the Demise of 'the Letter'. AU - Witkop CT Y1 - 2009/09// N1 - Accession Number: 105413481. Language: English. Entry Date: 20091023. Revision Date: 20150711. Publication Type: Journal Article; editorial. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Obstetric Care; Women's Health. NLM UID: 0401101. KW - Drug and Narcotic Control KW - Drug Labeling -- Legislation and Jurisprudence KW - Drugs, Prescription KW - Maternal-Fetal Exchange KW - Female KW - Pregnancy KW - Product Evaluation KW - United States SP - 502 EP - 503 JO - Obstetrics & Gynecology JF - Obstetrics & Gynecology JA - OBSTET GYNECOL VL - 114 IS - 3 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 0029-7844 AD - Dr. Witkop is with Preventive Medicine and Obstetrics and Gynecology at the United States Air Force Academy, Colorado Springs, Colorado, and she is Assistant Professor, Obstetrics and Gynecology, at the Uniformed Services University of the Health Sciences, Bethesda, Maryland; e-mail: katika@aya.yale.edu. U2 - PMID: 19701026. DO - 10.1097/AOG.0b013e3181b5bacc UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105413481&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 105244127 T1 - What have I done? AU - Prentice DL Y1 - 2009/09//Sep-Nov2009 N1 - Accession Number: 105244127. Language: English. Entry Date: 20100122. Revision Date: 20150820. Publication Type: Journal Article. Journal Subset: Editorial Board Reviewed; Nursing; Peer Reviewed; USA. NLM UID: 19330740R. KW - Mentorship KW - Nursing Role SP - 8 EP - 8 JO - Oklahoma Nurse JF - Oklahoma Nurse JA - OKLA NURSE VL - 54 IS - 3 CY - Oklahoma City, Oklahoma PB - Oklahoma Nurses Association SN - 0030-1787 AD - United States Air Force, Office of the Surgeon General, USA. U2 - PMID: 19757741. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105244127&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2010-05626-003 AN - 2010-05626-003 AU - Patterson, Robert AU - Fournier, Lisa AU - Pierce, Byron J. AU - Winterbottom, Marc D. AU - Tripp, Lisa M. T1 - System dynamics modeling of the time course of the recognition-primed decision model. JF - Journal of Cognitive Engineering and Decision Making JO - Journal of Cognitive Engineering and Decision Making JA - J Cogn Eng Decis Mak Y1 - 2009///Fal 2009 VL - 3 IS - 3 SP - 253 EP - 279 CY - US PB - Sage Publications SN - 1555-3434 AD - Patterson, Robert, Department of Psychology, Washington State University, 233 Johnson Tower, Pullman, WA, US, 99164-4820 N1 - Accession Number: 2010-05626-003. Partial author list: First Author & Affiliation: Patterson, Robert; Washington State University, Pullman, WA, US. Release Date: 20110620. Correction Date: 20111003. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Decision Making; Expert Systems; Simulation; Time. Classification: Artificial Intelligence & Expert Systems (4120). Population: Human (10). Methodology: Empirical Study; Mathematical Model; Quantitative Study. References Available: Y. Page Count: 27. Issue Publication Date: Fal 2009. Copyright Statement: All rights reserved. Human Factors and Ergonomics Society. 2009. AB - Two types of decision-making processes have been identified in the literature: an analytical process and an intuitive process. One conceptual model of the latter is the recognition-primed decision (RPD) model (e.g., Klein, 2008). According to this model, decision making in naturalistic contexts entails a situational pattern-recognition process that, if subsequent expectancies are confirmed, leads the decision maker to render a decision to engage in a given course of action. In this paper, we describe a system dynamics model of Klein's RPD framework that focuses upon the dynamics of the decision-making process. The structure of our RPD model is based on a model of a set of laboratory phenomena called conjunction benefits and costs (e.g., L. R. Fournier, Patterson, Dyre, Wiediger, & Winters, 2007), which was extended to encompass the RPD framework. The results of our simulations suggest that decision priming (a bias toward rendering a given decision based on prior information) is a phenomenon that should occur in many naturalistic settings. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - system dynamics modeling KW - time course KW - recognition-primed decision model KW - decision making KW - expert systems KW - 2009 KW - Decision Making KW - Expert Systems KW - Simulation KW - Time KW - 2009 U1 - Sponsor: US Air Force, US. Grant: FA8650-05-D6502. Other Details: Task Order 0037, to Link Simulation and Training, L3 Communications. Recipients: No recipient indicated DO - 10.1518/155534309X474488 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-05626-003&site=ehost-live&scope=site UR - rpatter@mail.wsu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2009-16870-010 AN - 2009-16870-010 AU - Butler, Michelle A. AU - Corboy, John R. AU - Filley, Christopher M. T1 - How the conflict between American psychiatry and neurology delayed the appreciation of cognitive dysfunction in multiple sclerosis. JF - Neuropsychology Review JO - Neuropsychology Review JA - Neuropsychol Rev Y1 - 2009/09// VL - 19 IS - 3 SP - 399 EP - 410 CY - Germany PB - Springer SN - 1040-7308 SN - 1573-6660 AD - Butler, Michelle A., United States Air Force Academy, HQ USAFA/DFBL, 2354 Fairchild Drive, Ste. 6L101B, USAF Academy, Colorado Springs, CO, US, 80840-6228 N1 - Accession Number: 2009-16870-010. PMID: 19373561 Partial author list: First Author & Affiliation: Butler, Michelle A.; United States Air Force Academy, Colorado Springs, CO, US. Release Date: 20091102. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Impairment; Multiple Sclerosis; Neurology; Psychiatry. Minor Descriptor: Conflict. Classification: Physical & Somatoform & Psychogenic Disorders (3290). Population: Human (10). References Available: Y. Page Count: 12. Issue Publication Date: Sep, 2009. Publication History: First Posted Date: Apr 17, 2009; Accepted Date: Feb 25, 2009; First Submitted Date: Sep 3, 2008. Copyright Statement: Springer Science+Business Media, LLC. 2009. AB - Whereas cognitive deficits in multiple sclerosis (MS) were documented in the original clinicopathological description by Charcot, the extent and nature of cognitive dysfunction was poorly understood in the U.S. until over a century later. Our objective was to discern reasons for this misunderstanding and to examine forces shifting this topic to center stage of research and increased awareness in clinical practice. We hypothesized that during the 19th century, conflict between psychiatrists and neurologists over control of treatment of the mentally ill fueled a misunderstanding of the nature of MS which led neurologists to treat diseases of the body, and psychiatrists, diseases of the mind. The importance of cognitive deficits in MS was thus minimized until scientific breakthroughs could once again bring them to light. As the rift between disciplines peaked, awareness of cognitive deficits diminished, and vice versa. This may have been one contributing factor affecting how MS was mistakenly conceptualized for a century. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - neurology KW - history of medicine KW - multiple sclerosis KW - psychiatry KW - schemas KW - cognitive dysfunction KW - 2009 KW - Cognitive Impairment KW - Multiple Sclerosis KW - Neurology KW - Psychiatry KW - Conflict KW - 2009 DO - 10.1007/s11065-009-9089-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-16870-010&site=ehost-live&scope=site UR - michelle.butler@usafa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2009-12552-005 AN - 2009-12552-005 AU - Nam, Chang S. AU - Lyons, Joseph B. AU - Hwang, Ha-Sung AU - Kim, Sukwon T1 - The process of team communication in multi-cultural contexts: An empirical study using Bales’ interaction process analysis (IPA). JF - International Journal of Industrial Ergonomics JO - International Journal of Industrial Ergonomics JA - Int J Ind Ergon Y1 - 2009/09// VL - 39 IS - 5 SP - 771 EP - 782 CY - Netherlands PB - Elsevier Science SN - 0169-8141 AD - Nam, Chang S., Department of Industrial Engineering, University of Arkansas, 4207 Bell Engineering Center, Fayetteville, AR, US, 72701 N1 - Accession Number: 2009-12552-005. Partial author list: First Author & Affiliation: Nam, Chang S.; Department of Industrial Engineering, University of Arkansas, Fayetteville, AR, US. Release Date: 20100222. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Communication; Diversity in the Workplace; Group Dynamics; Interpersonal Interaction; Work Teams. Classification: Group & Interpersonal Processes (3020). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: Sep, 2009. Publication History: First Posted Date: Apr 16, 2009; Accepted Date: Mar 14, 2009; Revised Date: Feb 6, 2009; First Submitted Date: Mar 31, 2008. Copyright Statement: All rights reserved. Elsevier B.V. 2009. AB - The main goal of the present study was to empirically investigate the manner in which cultural diversity and communication mode affect team communication process. Two independent variables were manipulated in the study: (1) cultural diversity (homogeneous versus heterogeneous); and (2) communication mode (face-to-face versus computer-mediated communication). Team members’ communication exchanges were measured by using Bales’ interaction process analysis (IPA) that divides the function (as opposed to the topical content) of communication during group discussion into either task-related or socio-emotional contributions at two-levels: communication profile and functional area. Results of this study indicated homogeneous teams used more showing agreement, giving opinions, and showing tension communication patterns compared to heterogeneous teams. Additionally, when considering the higher-level functional areas, teams using face-to-face (FTF) communication strategies were characterized by greater positive socio-emotional communication, more attempted answers, more questions, and more frequent negative socio-emotional communications. The results of the present study also suggested that the impact of communication mode on team communication varies by the level of diversity within the team. The outcomes of this research should have a broad impact on the management of a multi-cultural team, a task-oriented team consisting of people with different national cultures. Relevance to industry: Results of the present study should provide valuable insights into the ways in which cultural diversity and communication mode influence the communication mechanisms which take place among members during team interaction. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - team communication KW - cultural diversity KW - communication mode KW - interaction process analysis KW - 2009 KW - Communication KW - Diversity in the Workplace KW - Group Dynamics KW - Interpersonal Interaction KW - Work Teams KW - 2009 U1 - Sponsor: Air Force Research Laboratory (AFRL). Grant: EEC-0436687. Other Details: Center for Engineering Logistics and Distribution (CELDi). Recipients: No recipient indicated DO - 10.1016/j.ergon.2009.03.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-12552-005&site=ehost-live&scope=site UR - cnam@uark.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Martin, John A. AU - Combs, James G. T1 - Punishing Managers for Bad Acquisitions: Does Firm Size Matter? JO - Academy of Management Perspectives JF - Academy of Management Perspectives Y1 - 2009/08// VL - 23 IS - 3 M3 - Article SP - 92 EP - 93 PB - Academy of Management SN - 15589080 AB - This article focuses on the outcome of managers whose acquisitions fail. Examined is whether they are punished, especially if they repeatedly make bad acquisition decisions. Research in both finance and management indicates that when managers continually make bad acquisitions, it's time to hire a new management team. Attention is given to a study by David Offenberg of Loyola Marymount University. In his study he explored whether managers at large companies really do go unpunished when they make bad acquisitions. KW - MANAGEMENT science KW - CONSOLIDATION & merger of corporations -- Management KW - EXECUTIVES KW - DECISION making KW - LABOR discipline KW - FINANCIAL risk management KW - EXECUTIVES -- Rating of KW - SUCCESS in business KW - STOCKHOLDERS wealth KW - BUSINESS failures KW - STOCKS (Finance) -- Prices KW - DISMISSAL of KW - OFFENBERG, David N1 - Accession Number: 43479267; Martin, John A. 1; Combs, James G. 2; Affiliations: 1: Assistant Professor of Management, United States Air Force Academy.; 2: Jim Moran Professor of Management and Executive Director, Jim Moran Institute for Global Entrepreneurship, Florida State University.; Issue Info: Aug2009, Vol. 23 Issue 3, p92; Thesaurus Term: MANAGEMENT science; Thesaurus Term: CONSOLIDATION & merger of corporations -- Management; Thesaurus Term: EXECUTIVES; Thesaurus Term: DECISION making; Thesaurus Term: LABOR discipline; Thesaurus Term: FINANCIAL risk management; Thesaurus Term: EXECUTIVES -- Rating of; Thesaurus Term: SUCCESS in business; Thesaurus Term: STOCKHOLDERS wealth; Thesaurus Term: BUSINESS failures; Thesaurus Term: STOCKS (Finance) -- Prices; Subject Term: DISMISSAL of; People: OFFENBERG, David; Number of Pages: 2p; Document Type: Article L3 - 10.5465/AMP.2009.43479267 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=43479267&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Martin, Staci AU - Elliott-DeSorbo, Deborah K. AU - Calabrese, Sarah AU - Wolters, Pamela L. AU - Roby, Gregg AU - Brennan, Tara AU - Wood, Lauren V. T1 - A Comparison of Adherence Assessment Methods Utilized in the United States: Perspectives of Researchers, HIV-Infected Children, and their Caregivers. JO - AIDS Patient Care & STDs JF - AIDS Patient Care & STDs Y1 - 2009/08// VL - 23 IS - 8 M3 - Article SP - 593 EP - 601 PB - Mary Ann Liebert, Inc. SN - 10872914 AB - This study sought to elucidate methodological issues in adherence research by comparing multiple methods of assessing adherence to antiretroviral medication. From 2003 to 2004, 24 youths with vertically infected HIV disease (mean age = 14.0 years; range, 8–18) and their caregivers participated in a 6-month study. These children were all on highly active antiretroviral therapy (HAART) and were relatively healthy (mean CD4 absolute count = 711.8 ± 604.5). Adherence was assessed with the Medication Event Monitoring System (MEMS), pill counts, and interviews. Patients and caregivers completed the Perceptions of Adherence Study Participation (PASP) questionnaire. MEMS provided the most detailed adherence information, and good reliability was indicated by significant correlations with medical markers. Pill counts provided similar adherence rates, while patients and caregivers reported nearly perfect adherence in interviews. Problems were experienced with each method: MEMS were expensive, had cap malfunctions, and lack a consistent guiding principle for data interpretation. With pill counts, families forgot to bring all medication bottles to clinic, and interviews were compromised by social desirability and difficulty reaching families by telephone. Most patients and caregivers believed study participation improved the child's adherence, although PASP ratings were unrelated to adherence at the study endpoint. While MEMS may be most reliable, pill counts offer comparable data and are less costly, while interviews seemed least accurate in this study. Most participants reported positive perceptions of their research experience. A consensus among researchers is needed for defining and measuring adherence, and specific recommendations are offered for achieving this goal. [ABSTRACT FROM AUTHOR] AB - Copyright of AIDS Patient Care & STDs is the property of Mary Ann Liebert, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Antiviral agents KW - HIV-positive persons KW - Juvenile diseases KW - HIV infections KW - Caregivers KW - Children -- United States KW - Lentivirus diseases KW - Social desirability KW - United States N1 - Accession Number: 43758120; Martin, Staci 1,2; Email Address: martins@mail.nih.gov; Elliott-DeSorbo, Deborah K. 1,3; Calabrese, Sarah 1; Wolters, Pamela L. 1,2; Roby, Gregg 1,4; Brennan, Tara 1,5; Wood, Lauren V. 1,6; Affiliations: 1: National Cancer Institute, Center for Cancer Research, Bethesda, Maryland.; 2: Medical Illness Counseling Center, Chevy Chase, Maryland.; 3: United States Air Force Academy, Colorado Springs, Colorado.; 4: Intramural Clinical Management and Operations Branch, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland.; 5: Children's National Medical Center, Washington, D.C.; 6: Vaccine Branch, Center for Cancer Research, Bethesda, Maryland.; Issue Info: Aug2009, Vol. 23 Issue 8, p593; Thesaurus Term: Antiviral agents; Subject Term: HIV-positive persons; Subject Term: Juvenile diseases; Subject Term: HIV infections; Subject Term: Caregivers; Subject Term: Children -- United States; Subject Term: Lentivirus diseases; Subject Term: Social desirability; Subject: United States; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; Number of Pages: 9p; Illustrations: 3 Charts; Document Type: Article L3 - 10.1089/apc.2009.0021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=43758120&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Muratore, C. AU - Voevodin, A. A. T1 - Chameleon Coatings: Adaptive Surfaces to Reduce Friction and Wear in Extreme Environments. JO - Annual Review of Materials Research JF - Annual Review of Materials Research Y1 - 2009/08// VL - 39 IS - 1 M3 - Article SP - 297 EP - 324 SN - 15317331 AB - Adaptive nanocomposite coating materials that automatically and reversibly adjust their surface composition and morphology via multiple mechanisms are a promising development for the reduction of friction and wear over broad ranges of ambient conditions encountered in aerospace applications, such as cycling of temperature and atmospheric composition. Materials selection for these composites is based on extensive study of interactions occurring between solid lubricants and their surroundings, especially with novel in situ surface characterization techniques used to identify adaptive behavior on size scales ranging from 10-10 to 10-4 m. Recent insights on operative solid-lubricant mechanisms and their dependency upon the ambient environment are reviewed as a basis for a discussion of the state of the art in solid-lubricant materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Annual Review of Materials Research is the property of Annual Reviews Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - TRIBOLOGY KW - SURFACES (Technology) -- Analysis KW - ELECTRON microscopy KW - LUBRICATION & lubricants KW - ANALYTICAL chemistry KW - aerospace KW - electron microscopy KW - high temperature KW - surface analysis KW - tribology N1 - Accession Number: 44060689; Muratore, C. 1; Email Address: chris.muratore@wpafb.af.mil; Voevodin, A. A. 1; Affiliations: 1: Thermal Science and Materials Branch, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Issue Info: 2009, Vol. 39 Issue 1, p297; Thesaurus Term: RESEARCH; Subject Term: TRIBOLOGY; Subject Term: SURFACES (Technology) -- Analysis; Subject Term: ELECTRON microscopy; Subject Term: LUBRICATION & lubricants; Subject Term: ANALYTICAL chemistry; Author-Supplied Keyword: aerospace; Author-Supplied Keyword: electron microscopy; Author-Supplied Keyword: high temperature; Author-Supplied Keyword: surface analysis; Author-Supplied Keyword: tribology; NAICS/Industry Codes: 324191 Petroleum Lubricating Oil and Grease Manufacturing; Number of Pages: 28p; Document Type: Article L3 - 10.1146/annurev-matsci-082908-145259 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=44060689&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Uchic, Michael D. AU - Shade, Paul A. AU - Dimiduk, Dennis M. T1 - Plasticity of Micrometer-Scale Single Crystals in Compression. JO - Annual Review of Materials Research JF - Annual Review of Materials Research Y1 - 2009/08// VL - 39 IS - 1 M3 - Article SP - 361 EP - 386 SN - 15317331 AB - This review examines the recent literature that has focused on uniaxial compression experiments of single crystals at the micrometer scale. Collectively, the studies discovered new regimes of plastic flow that are size-scale dependent and that occur in the absence of strong strain gradients. However, the quantitative comparison of the flow curves between independent studies is hampered by differences in the particular implementations of the testing methodology. Modeling of microcompression experiments using 3-D discrete dislocation simulations has provided valuable insight into the mechanisms that control plastic flow in FCC metals. These efforts identified the importance of the initial dislocation density and distribution of mobile dislocation segments, the influence of free surfaces on that distribution, as well as altered multiplication and hardening responses due to the finite source statistics. Microcrystal experiments also provide a new pathway to characterize the global system dynamics of dislocation ensembles and associated stochastic processes. [ABSTRACT FROM AUTHOR] AB - Copyright of Annual Review of Materials Research is the property of Annual Reviews Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STOCHASTIC processes KW - FINITE element method KW - POLYCRYSTALS KW - PLASTICITY KW - MICROMETERS (Instruments) KW - ATOMIC weights KW - discrete dislocation simulations KW - experimental techniques KW - flow intermittency KW - microcompression testing KW - size effects KW - strength N1 - Accession Number: 44060691; Uchic, Michael D. 1; Email Address: michael.uchic@wpafbaf.mil; Shade, Paul A. 2; Email Address: msshade@iuatsceng.ohio-state.edu; Dimiduk, Dennis M. 1; Email Address: dennis.dimiduk@wpafb.af.mil; Affiliations: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433; 2: Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210; Issue Info: 2009, Vol. 39 Issue 1, p361; Thesaurus Term: STOCHASTIC processes; Thesaurus Term: FINITE element method; Subject Term: POLYCRYSTALS; Subject Term: PLASTICITY; Subject Term: MICROMETERS (Instruments); Subject Term: ATOMIC weights; Author-Supplied Keyword: discrete dislocation simulations; Author-Supplied Keyword: experimental techniques; Author-Supplied Keyword: flow intermittency; Author-Supplied Keyword: microcompression testing; Author-Supplied Keyword: size effects; Author-Supplied Keyword: strength; NAICS/Industry Codes: 332210 Cutlery and hand tool manufacturing; NAICS/Industry Codes: 332216 Saw Blade and Handtool Manufacturing; Number of Pages: 26p; Document Type: Article L3 - 10.1146/annurev-matsci-082908-145422 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=44060691&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Davidson, Molly AU - Kerepesi, Laura AU - Soto, Armando AU - Chan, Victor T1 - d-Serine exposure resulted in gene expression changes implicated in neurodegenerative disorders and neuronal dysfunction in male Fischer 344 rats. JO - Archives of Toxicology JF - Archives of Toxicology Y1 - 2009/08// VL - 83 IS - 8 M3 - Article SP - 747 EP - 762 PB - Springer Science & Business Media B.V. SN - 03405761 AB - d-Serine, an endogenous amino acid, is involved in many physiological processes through its interaction with the glycine binding site of the N-methyl- d-aspartate (NMDA) receptor. It has important roles in development, learning, and cell death signaling. Recent evidence suggests that decreased function of the NMDA receptor is related to the etiology of schizophrenia, and the use of d-serine as add-on therapy is beneficial in alleviating the symptoms of treatment-refractory schizophrenia. The NMDA receptor also plays a major role in neuronal cell death and neurodegeneration mediated by excitatory amino acid toxicity in ischemia, epilepsy, and trauma. Due to its co-activator function, d-serine can markedly potentiate NMDA-mediated excitotoxicity. To investigate potential adverse effects of d-serine treatment... [ABSTRACT FROM AUTHOR] AB - Copyright of Archives of Toxicology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Cell death KW - Diseases -- Causes & theories of causation KW - Medical research KW - Amino acids KW - Glycine KW - Schizophrenia KW - d-Serine KW - N-methyl- d-aspartate (NMDA) receptor KW - N-methyl-D-aspartate (NMDA) receptor KW - Neuronal dysfunction KW - Pathway analysis KW - Transcriptomic profiling KW - Transcriptomic proWling N1 - Accession Number: 43520789; Davidson, Molly; Email Address: Molly.Davidson@wpafb.af.mil; Kerepesi, Laura 1; Soto, Armando 2; Chan, Victor 2; Email Address: victor.chan@wpafb.af.mil; Affiliations: 1: Battelle Memorial Institute, Biotechnology, 505 King Ave. Columbus 43201 USA; 2: Applied Biotechnology Branch, Air Force Research Laboratory, Human Effectiveness Directorate, 711th Human Performance Wing, Bldg. 837, 2729 R Street, Area B Wright-Patterson Air Force Base Dayton 45433-5707 USA; Issue Info: Aug2009, Vol. 83 Issue 8, p747; Thesaurus Term: Cell death; Thesaurus Term: Diseases -- Causes & theories of causation; Subject Term: Medical research; Subject Term: Amino acids; Subject Term: Glycine; Subject Term: Schizophrenia; Author-Supplied Keyword: d-Serine; Author-Supplied Keyword: N-methyl- d-aspartate (NMDA) receptor; Author-Supplied Keyword: N-methyl-D-aspartate (NMDA) receptor; Author-Supplied Keyword: Neuronal dysfunction; Author-Supplied Keyword: Pathway analysis; Author-Supplied Keyword: Transcriptomic profiling; Author-Supplied Keyword: Transcriptomic proWling; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 16p; Illustrations: 5 Diagrams, 3 Charts; Document Type: Article L3 - 10.1007/s00204-009-0405-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=43520789&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hameed, Sultan AU - Norwood, Henry H. AU - Flanagan, Michael AU - Feldstein, Steven AU - Chien-hsiung Yang T1 - The Influence of El Niño on the Spring Fallout of Asian Bird Species at Attu Island. JO - Earth Interactions JF - Earth Interactions Y1 - 2009/08// VL - 13 IS - 7 M3 - Article SP - 1 EP - 22 PB - American Meteorological Society SN - 10873562 AB - Several studies have documented the effect of the recent secular climate warming on the distributions and geographical ranges of birds. Here the authors report the strong impact of a recurring climatic pattern in the equatorial Pacific, the El Niño–Southern Oscillation (ENSO) cycle of warm (El Niño) and cold (La Niña) events, on spring migrants along the Far Eastern flyway in northeast Asia. In El Niño years, an unusually large number of birds that use the flyway are observed at Attu Island, westernmost of the Aleutian Islands, nearly 960 km away from the Asian coast. This study is based on a 20-yr dataset documenting the year-to-year variation of Asian birds arriving on Attu in the spring season and uses a three-phased analytical methodology to examine climate impacts on bird movements and populations. The authors offer evidence that birds are displaced toward the Attu area in strong eastward-moving storms. They also present results from a reverse trajectory model that was used to simulate trajectories that a sample of Attu arrivals likely followed in reaching the island. In a statistical analysis, it is shown that 79% of the variation of the Asian birds is explained by a single climate variable: sea surface temperature in the eastern equatorial Pacific in the previous fall. It is the rise in sea surface temperature in this region, more than 8000 km from Attu, that characterizes the onset of an El Niño episode. Examining those years for which there was a strong ENSO signal in the fall, it is found that the following May is characterized by anomalously strong westerly winds in the northwest Pacific, conditions that are appropriate for large Asian bird fallouts at Attu. Because of the time lag between the fall sea surface temperatures in the El Niño region and the spring Asian bird count at Attu, and the strong correlation between these two quantities, the number of Asian birds arriving at Attu in spring is predictable in the previous autumn. Such predictions are presented for several years. [ABSTRACT FROM AUTHOR] AB - Copyright of Earth Interactions is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Climatic changes KW - Bird watching KW - Atmospheric pressure KW - Ocean-atmosphere interaction KW - Effect of atmospheric temperature on birds KW - El Niño Current KW - Ocean currents -- Pacific Ocean KW - Attu Island (Alaska) KW - Alaska KW - Asia KW - Aleutian birds KW - Attu KW - Bird migration KW - ENSO N1 - Accession Number: 47710073; Hameed, Sultan 1; Email Address: shameed@notes.cc.sunysb.edu; Norwood, Henry H.; Flanagan, Michael 1; Feldstein, Steven 2; Chien-hsiung Yang 3; Affiliations: 1: School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, New York.; 2: Earth and Environmental Systems Institute, The Pennsylvania State University, University Park, Pennsylvania.; 3: Voluntary Emeritus Corps, U.S. Air Force Research Laboratory, Hanscom AFB, Bedford, Massachusetts.; Issue Info: 2008, Vol. 13 Issue 7, p1; Thesaurus Term: Climatic changes; Thesaurus Term: Bird watching; Thesaurus Term: Atmospheric pressure; Thesaurus Term: Ocean-atmosphere interaction; Thesaurus Term: Effect of atmospheric temperature on birds; Subject Term: El Niño Current; Subject Term: Ocean currents -- Pacific Ocean; Subject: Attu Island (Alaska); Subject: Alaska; Subject: Asia; Author-Supplied Keyword: Aleutian birds; Author-Supplied Keyword: Attu; Author-Supplied Keyword: Bird migration; Author-Supplied Keyword: ENSO; Number of Pages: 22p; Illustrations: 1 Chart, 3 Graphs, 3 Maps; Document Type: Article L3 - 10.1175/2009EI272.1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=47710073&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Perlovsky, Leonid I. T1 - "Vague-to-Crisp" Neural Mechanism of Perception. JO - IEEE Transactions on Neural Networks JF - IEEE Transactions on Neural Networks J1 - IEEE Transactions on Neural Networks PY - 2009/08// Y1 - 2009/08// VL - 20 IS - 8 M3 - Article SP - 1363 EP - 1367 SN - 10459227 AB - This brief describes neural modeling fields (NMFs) for object perception a bio-inspired paradigm. We discuss previous difficulties in object perception algorithms encountered since the 1950s, and describe flow NMF overcomes these difficulties. NMF mechanisms are compared to recent experimental neuroimaging observations, which have demonstrated that initial top-down signals are vague and during perception they evolve into crisp representations matching the bottom-up signals from observed objects. Neural and mathematical mechanisms are described and future research directions outlined. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Neural Networks is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEURAL networks (Neurobiology) KW - COGNITIVE neuroscience KW - NEUROBIOLOGY KW - PERCEPTION KW - INTELLECT KW - BRAIN imaging N1 - Accession Number: 44111462; Source Information: Aug2009, Vol. 20 Issue 8, p1363; Subject Term: NEURAL networks (Neurobiology); Subject Term: COGNITIVE neuroscience; Subject Term: NEUROBIOLOGY; Subject Term: PERCEPTION; Subject Term: INTELLECT; Subject Term: BRAIN imaging; Subject Term: ; Number of Pages: 5p; ; Illustrations: 1 Diagram, 1 Graph; ; Document Type: Article; L3 - 10.1109/TNN.2009.2025501 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=44111462&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Hersey, R.K. AU - Melvin, W.L. AU - McClellan, J.H. AU - Culpepper, E. T1 - Adaptive ground clutter suppression for conformal array radar systems. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2009/08// VL - 3 IS - 4 M3 - Article SP - 357 EP - 372 SN - 17518784 AB - Conformal arrays (CFAs) possess certain desirable characteristics for deployment on unmanned aerial vehicles and other payload-limited platforms. However, the CFA non-planar geometry induces clutter non-stationarity, resulting in elevated signal-to-interference-plus-noise ratio (SINR) loss when applying conventional space–time adaptive processing (STAP) algorithms. Non-stationary clutter leads to covariance matrix estimation error and, consequently, an erroneous STAP frequency response. In this study, the authors examine two practical conformal antenna configurations: a belly-mounted canoe and a nose-mounted, chined shape. Using high-fidelity signal models, the authors show traditional STAP losses in excess of 10 dB because of the effects of clutter non-stationarity. The authors then investigate a number of ameliorating techniques compatible with standard STAP implementation, including localised processing, localised processing with time-varying weights, equivalent uniform linear array transformation, angle–Doppler warping and higher-order angle–Doppler warping. The authors demonstrate very good performance for the higher-order angle–Doppler warping method applied to the chined radome shape, with peak adaptive SINR losses reduced from nearly 16 dB for the uncompensated case to 3 dB of loss consistent with performance attainable in a homogeneous clutter environment. The authors also find good performance for three-dimensional angle–Doppler warping over azimuth, elevation and Doppler when applied to the tapered canoe shape, with uncompensated losses of roughly 14 dB reduced to 3 dB, again a level compatible with STAP applied in a homogeneous clutter environment. The authors thus show that CFA STAP can yield performance similar to that of a conventional planar array when using appropriate compensation methods. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - ANALYSIS of covariance KW - ANTENNA arrays KW - SPACE & time KW - ANTENNAS (Electronics) KW - FREQUENCY response (Dynamics) N1 - Accession Number: 43720488; Hersey, R.K. 1; Melvin, W.L. 1,2; McClellan, J.H. 2; Culpepper, E. 3; Email Address: bill.melvin@gtri.gatech.edu; Affiliations: 1: Sensors and Electromagnetic Applications Laboratory, Georgia Tech Research Institute, Georgia Institute of Technology, Atlanta, GA, USA; 2: Department of Electrical and Computer Engineering, Georgia Institute of Technology, Center for Signal and Image Processing, Atlanta, GA, USA; 3: Air Force Research Laboratory, Sensors Directorate, WPAFB, OH, USA; Issue Info: Aug2009, Vol. 3 Issue 4, p357; Thesaurus Term: ALGORITHMS; Thesaurus Term: ANALYSIS of covariance; Subject Term: ANTENNA arrays; Subject Term: SPACE & time; Subject Term: ANTENNAS (Electronics); Subject Term: FREQUENCY response (Dynamics); NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; Number of Pages: 16p; Illustrations: 1 Diagram, 3 Charts, 19 Graphs; Document Type: Article L3 - 10.1049/iet-rsn.2008.0149 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=43720488&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 2010-14628-003 AN - 2010-14628-003 AU - Schultz, Natasha B. AU - Matthews, Gerald AU - Warm, Joel S. AU - Washburn, David A. T1 - A transcranial Doppler sonography study of shoot/don’t-shoot responding. JF - Behavior Research Methods JO - Behavior Research Methods JA - Behav Res Methods Y1 - 2009/08// VL - 41 IS - 3 SP - 593 EP - 597 CY - US PB - Psychonomic Society SN - 1554-351X SN - 1554-3528 AD - Washburn, David A., Department of Psychology, Georgia State University, Box 5010, Atlanta, GA, US, 30302-5010 N1 - Accession Number: 2010-14628-003. PMID: 19587168 Other Journal Title: Behavior Research Methods & Instrumentation; Behavior Research Methods, Instruments & Computers. Partial author list: First Author & Affiliation: Schultz, Natasha B.; Georgia State University, Atlanta, GA, US. Other Publishers: Springer. Release Date: 20101025. Correction Date: 20131014. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Brain; Cerebral Blood Flow; Performance; Threat. Minor Descriptor: Reaction Time; Velocity. Classification: Neuropsychology & Neurology (2520). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Edinburgh Handedness Inventory DOI: 10.1037/t23111-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 5. Issue Publication Date: Aug, 2009. Publication History: Accepted Date: May 8, 2008; First Submitted Date: Dec 6, 2007. Copyright Statement: The Psychonomic Society, Inc. 2009. AB - The purpose of this study was to examine the relationship between changes in cerebral blood-flow velocity and performance on a speeded shoot/don’t-shoot task. Brain activity as indicated by cerebral blood-flow velocity (hemovelocity) was recorded using the transcranial Doppler ultrasonography. A shoot/don’t-shoot decision-making task presented participants with threat/nonthreat stimuli in the form of bull’s-eye images of various colors. Participants were required to shoot threat targets using a laser-modified handgun. Results support a vigilance decrement in both the performance measures and hemovelocity. Performance, as measured by reaction time, number of hits, and marksmanship, decreased across the length of the vigil. Hemovelocity slowed across the left and right hemispheres as the task progressed, and hemovelocity was slower in the right hemisphere than in the left hemisphere. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - transcranial Doppler sonography KW - shoot responding KW - cerebral blood flow velocity KW - brain activity KW - threat targets KW - performance KW - reaction time KW - hits KW - markmanship KW - 2009 KW - Brain KW - Cerebral Blood Flow KW - Performance KW - Threat KW - Reaction Time KW - Velocity KW - 2009 U1 - Sponsor: US Army Medical Research and Material Command, US. Recipients: No recipient indicated U1 - Sponsor: Eunice Kennedy Shriver National Institute of Child Health and Human Development, US. Grant: HD 38051. Recipients: No recipient indicated DO - 10.3758/BRM.41.3.593 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-14628-003&site=ehost-live&scope=site UR - dwashburn@gsu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Wang, Wenjing AU - Chatterjee, Mainak AU - Kwiat, Kevin T1 - User-input driven QoS management in ad hoc networks JO - Computer Communications JF - Computer Communications Y1 - 2009/07/03/ VL - 32 IS - 11 M3 - Article SP - 1306 EP - 1315 SN - 01403664 AB - Abstract: Though the network quality-of-service (QoS) metrics are defined in terms of technical parameters (e.g., delay, jitter, bandwidth), they are rather subjective when it comes to the end user. Oftentimes, the end user finds it difficult to express his desired QoS in such technical parameters, though he has a fair idea of what QoS he desires. In this paper, we show how translation functions can be devised and used to translate the user inputs to networking parameters that are used by various layers of the protocol stack. In particular, we consider an ad hoc network and show an interface design that uses translation functions to map user supplied inputs to parameters at the medium access control (MAC) and routing layers. These parameters, in turn, choose the right strategies that particular layer functionality can adopt, such that the QoS desired by the user is achieved. We also compute the associated costs due to the different strategies adopted. We implement the interface on ns-2 and conduct simulation experiments with randomly scattered IEEE 802.11 enabled nodes. Results show the functionality of the interface and demonstrate how delay, throughput, and network lifetime are affected when the end user seeks different levels of QoS. [Copyright &y& Elsevier] AB - Copyright of Computer Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUALITY of service KW - BANDWIDTHS KW - COMPUTER users KW - AD hoc networks (Computer networks) KW - WEBOMETRICS KW - TIME delay systems KW - END users (Information technology) KW - MACHINE translating KW - OSI (Computer network standard) KW - ROUTING (Computer network management) KW - IEEE 802.11 (Standard) KW - Ad hoc networks KW - Interface KW - MAC KW - Routing KW - Translation functions N1 - Accession Number: 42964658; Wang, Wenjing 1; Email Address: wenjing@eecs.ucf.edu; Chatterjee, Mainak 1; Email Address: mainak@eecs.ucf.edu; Kwiat, Kevin 2; Email Address: kevin.kwiat@rl.af.mil; Affiliations: 1: Electrical Engineering and Computer Science, University of Central Florida, Orlando, FL 32816, USA; 2: Air Force Research Laboratory, Information Directorate, Rome, NY 13441, USA; Issue Info: Jul2009, Vol. 32 Issue 11, p1306; Thesaurus Term: QUALITY of service; Thesaurus Term: BANDWIDTHS; Subject Term: COMPUTER users; Subject Term: AD hoc networks (Computer networks); Subject Term: WEBOMETRICS; Subject Term: TIME delay systems; Subject Term: END users (Information technology); Subject Term: MACHINE translating; Subject Term: OSI (Computer network standard); Subject Term: ROUTING (Computer network management); Subject Term: IEEE 802.11 (Standard); Author-Supplied Keyword: Ad hoc networks; Author-Supplied Keyword: Interface; Author-Supplied Keyword: MAC; Author-Supplied Keyword: Routing; Author-Supplied Keyword: Translation functions; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.comcom.2008.11.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=42964658&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Stockman, Emanuel S. AU - Zaidi, Sohail H. AU - Miles, Richard B. AU - Carter, Campbell D. AU - Ryan, Michael D. T1 - Measurements of combustion properties in a microwave enhanced flame JO - Combustion & Flame JF - Combustion & Flame Y1 - 2009/07// VL - 156 IS - 7 M3 - Article SP - 1453 EP - 1461 SN - 00102180 AB - Abstract: Microwave induced flame speed enhancement is quantified in a laminar, premixed CH4/air wall stagnation flat flame. Experiments were performed in a high Q microwave cavity with the cavity tuned so that the maximum microwave field is located in the vicinity of a flat flame front. Equivalence ratios were varied between 0.6 and 0.8. When the flame is radiated by a continuous wave microwave field of approximately 5kV/cm, the flame front is observed to move towards the burner exit and stabilize at a standoff distance corresponding to a flame speed increase of up to 20%. No microwave discharge is observed, indicating that the enhanced flame speed arises from microwave energy deposited directly into the reaction zone through coupling to the weakly ionized gas in that region. Laser diagnostics were performed to quantify temperature increase, the laminar flame speed enhancement, and changes in the OH radical concentration through filtered Rayleigh scattering, particle image velocimetry, and planar laser induced fluorescence, respectively. These measurements indicate that microwave radiation may prove to be an effective means to non-invasively control and enhance flame stability in combustors. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Combustion -- Measurement KW - Microwaves KW - Flame KW - Ionized gases KW - Stability (Mechanics) KW - Electric fields KW - Lasers in chemistry KW - Rayleigh scattering KW - Velocimetry KW - Electric field KW - Hydrocarbon combustion KW - Microwave KW - OH–PLIF KW - PIV flame speed KW - Plasma assisted combustion KW - Rayleigh temperature N1 - Accession Number: 41243099; Stockman, Emanuel S. 1; Email Address: estockma@princeton.edu; Zaidi, Sohail H. 1; Miles, Richard B. 1; Carter, Campbell D. 2; Ryan, Michael D. 3; Affiliations: 1: Engineering Quadrangle – Mechanical and Aerospace Engineering, Olden Street, Princeton University, Princeton, NJ 08544, USA; 2: US Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA; 3: Universal Technology Corporation, Dayton, OH 45332, USA; Issue Info: Jul2009, Vol. 156 Issue 7, p1453; Subject Term: Combustion -- Measurement; Subject Term: Microwaves; Subject Term: Flame; Subject Term: Ionized gases; Subject Term: Stability (Mechanics); Subject Term: Electric fields; Subject Term: Lasers in chemistry; Subject Term: Rayleigh scattering; Subject Term: Velocimetry; Author-Supplied Keyword: Electric field; Author-Supplied Keyword: Hydrocarbon combustion; Author-Supplied Keyword: Microwave; Author-Supplied Keyword: OH–PLIF; Author-Supplied Keyword: PIV flame speed; Author-Supplied Keyword: Plasma assisted combustion; Author-Supplied Keyword: Rayleigh temperature; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.combustflame.2009.02.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=41243099&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Holcomb, Trae AU - Herzinger, Kurt T1 - Unitary Numerical Semigroups and Perfect Bricks. JO - Communications in Algebra JF - Communications in Algebra J1 - Communications in Algebra PY - 2009/07// Y1 - 2009/07// VL - 37 IS - 7 M3 - Article SP - 2496 EP - 2508 PB - Taylor & Francis Ltd SN - 00927872 AB - This article completes a previous investigation of balanced and unitary numerical semigroups. The main result establishes the equivalence of unitary numerical semigroups and perfect 2 × 2 bricks. [ABSTRACT FROM AUTHOR] AB - Copyright of Communications in Algebra is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMIGROUPS (Algebra) KW - NUMERICAL analysis KW - GROUP theory KW - ALGEBRA KW - MATHEMATICS N1 - Accession Number: 42533160; Source Information: Jul2009, Vol. 37 Issue 7, p2496; Subject Term: SEMIGROUPS (Algebra); Subject Term: NUMERICAL analysis; Subject Term: GROUP theory; Subject Term: ALGEBRA; Subject Term: MATHEMATICS; Subject Term: ; Number of Pages: 13p; ; Document Type: Article; L3 - 10.1080/00927870802174165 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=42533160&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Commander, Clayton AU - Pardalos, Panos T1 - A combinatorial algorithm for the TDMA message scheduling problem. JO - Computational Optimization & Applications JF - Computational Optimization & Applications Y1 - 2009/07// VL - 43 IS - 3 M3 - Article SP - 449 EP - 463 SN - 09266003 AB - In this paper, we introduce a combinatorial algorithm for the message scheduling problem on Time Division Multiple Access (TDMA) networks. In TDMA networks, time is divided in to slots in which messages are scheduled. The frame length is defined as the total number of slots required for all stations to broadcast without message collisions. The objective is to provide a broadcast schedule of minimum frame length which also provides the maximum throughput. This problem is known to be $\mathcal{NP}$ -hard, thus efficient heuristics are needed to provide solutions to real-world instances. We present a two-phase algorithm which exploits the combinatorial structure of the problem in order to provide high quality solutions. The first phase finds a feasible frame length in which the throughput is maximized in phase two. Computational results are provided and compared with other heuristics in the literature as well as to the optimal solutions found using a commercial integer programming solver. Experiments on 63 benchmark instances show that the proposed method is able to provide optimal frame lengths for all cases with near optimal throughput. [ABSTRACT FROM AUTHOR] AB - Copyright of Computational Optimization & Applications is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TIME division multiple access KW - INTEGER programming KW - ALGORITHMS KW - DYNAMIC programming KW - CODE division multiple access KW - NONLINEAR programming KW - MATHEMATICAL programming KW - SYSTEMS engineering KW - RINGS of integers KW - $\mathcal{NP}$ -hard KW - Graph algorithms KW - Heuristics KW - NP-hard KW - Optimization KW - TDMA networks N1 - Accession Number: 41885785; Commander, Clayton 1; Email Address: clayton.commander@eglin.af.mil; Pardalos, Panos 2; Email Address: pardalos@ufl.edu; Affiliations: 1: Air Force Research Laboratory, Munitions Directorate, and Dept. of Industrial and Systems Engineering, University of Florida, Gainesville USA; 2: Center for Applied Optimization, Dept. of Industrial and Systems Engineering, University of Florida, Gainesville USA; Issue Info: Jul2009, Vol. 43 Issue 3, p449; Thesaurus Term: TIME division multiple access; Thesaurus Term: INTEGER programming; Thesaurus Term: ALGORITHMS; Thesaurus Term: DYNAMIC programming; Thesaurus Term: CODE division multiple access; Thesaurus Term: NONLINEAR programming; Thesaurus Term: MATHEMATICAL programming; Thesaurus Term: SYSTEMS engineering; Subject Term: RINGS of integers; Author-Supplied Keyword: $\mathcal{NP}$ -hard; Author-Supplied Keyword: Graph algorithms; Author-Supplied Keyword: Heuristics; Author-Supplied Keyword: NP-hard; Author-Supplied Keyword: Optimization; Author-Supplied Keyword: TDMA networks; Number of Pages: 15p; Illustrations: 4 Diagrams, 4 Charts; Document Type: Article L3 - 10.1007/s10589-007-9143-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=41885785&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Arulselvan, Ashwin AU - Commander, Clayton W. AU - Elefteriadou, Lily AU - Pardalos, Panos M. T1 - Detecting critical nodes in sparse graphs JO - Computers & Operations Research JF - Computers & Operations Research Y1 - 2009/07// VL - 36 IS - 7 M3 - Article SP - 2193 EP - 2200 SN - 03050548 AB - Identifying critical nodes in a graph is important to understand the structural characteristics and the connectivity properties of the network. In this paper, we focus on detecting critical nodes, or nodes whose deletion results in the minimum pair-wise connectivity among the remaining nodes. This problem, known as the critical node problem has applications in several fields including biomedicine, telecommunications, and military strategic planning. We show that the recognition version of the problem is -complete and derive a mathematical formulation based on integer linear programming. In addition, we propose a heuristic for the problem which exploits the combinatorial structure of the graph. The heuristic is then enhanced by the application of a local improvement method. A computational study is presented in which we apply the integer programming formulation and the heuristic to real and randomly generated data sets. For all instances tested, the heuristic is able to efficiently provide optimal solutions in a fraction of the time required by a commercial software package. [Copyright &y& Elsevier] AB - Copyright of Computers & Operations Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEURISTIC KW - LINEAR programming KW - MATHEMATICAL programming KW - STRATEGIC planning KW - OPERATIONS research KW - GRAPH connectivity KW - COMBINATORIAL analysis KW - Combinatorial optimization KW - Critical node detection KW - Heuristics KW - Integer linear programming KW - NP-complete N1 - Accession Number: 35928745; Arulselvan, Ashwin 1; Email Address: ashwin@ufl.edu; Commander, Clayton W. 2; Email Address: clayton.commander@gmail.com; Elefteriadou, Lily 3; Email Address: elefter@ce.ufl.edu; Pardalos, Panos M. 1; Email Address: pardalos@ufl.edu; Affiliations: 1: Center for Applied Optimization, Department of Industrial and Systems Engineering, University of Florida, Gainesville, FL, USA; 2: Air Force Research Laboratory, Munitions Directorate, and Department of Industrial and Systems Engineering, University of Florida, Gainesville, FL, USA; 3: Department of Civil and Coastal Engineering, University of Florida, Gainesville, FL, USA; Issue Info: Jul2009, Vol. 36 Issue 7, p2193; Thesaurus Term: HEURISTIC; Thesaurus Term: LINEAR programming; Thesaurus Term: MATHEMATICAL programming; Thesaurus Term: STRATEGIC planning; Thesaurus Term: OPERATIONS research; Subject Term: GRAPH connectivity; Subject Term: COMBINATORIAL analysis; Author-Supplied Keyword: Combinatorial optimization; Author-Supplied Keyword: Critical node detection; Author-Supplied Keyword: Heuristics; Author-Supplied Keyword: Integer linear programming; Author-Supplied Keyword: NP-complete; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.cor.2008.08.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=35928745&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 105377392 T1 - Predicting vigilance: a fresh look at an old problem. AU - Finomore V AU - Matthews G AU - Shaw T AU - Warm J Y1 - 2009/07// N1 - Accession Number: 105377392. Language: English. Entry Date: 20090828. Revision Date: 20150711. Publication Type: Journal Article; review; tables/charts. Journal Subset: Biomedical; Europe; Peer Reviewed; UK & Ireland. NLM UID: 0373220. KW - Attention KW - Affective Disorders KW - Anxiety KW - Attention Deficit Hyperactivity Disorder KW - Cognition Disorders KW - Coping KW - Fatigue KW - Health Services KW - Industry KW - Intelligence KW - Personality KW - Personnel Recruitment KW - Stress, Psychological KW - Transportation KW - Work Environment SP - 791 EP - 808 JO - Ergonomics JF - Ergonomics JA - ERGONOMICS VL - 52 IS - 7 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - Individual differences in vigilance are ubiquitous and relevant to a variety of work environments in industrial, transportation, medical and security settings. Despite much previous work, mostly on personality traits, it remains difficult to identify vigilant operators. This paper reviews recent research that may point towards practically useful predictor variables for vigilance. Theoretical approaches to identifying predictors that accommodate the heterogeneous nature of vigilance tasks are compared. The article surveys recent empirical studies using personality measures, ability tests and scales for stress and coping as predictors of vigilance. Promising new constructs include trait scales linked to fatigue, abnormal personality and the stress state of task engagement. Implications of the data reviewed for occupational selection are discussed. Selection should be based on a multivariate assessment strategy, cognitive task analysis of the operational vigilance task and use of work sample measures to capture typical stress responses to the task. This review paper surveys recent research that may point towards practically useful predictor variables for vigilance. The article surveys recent empirical studies using personality measures, ability tests and scales for stress and coping as predictors of vigilance. Selection should be based on a multivariate assessment strategy. SN - 0014-0139 AD - Air Force Research Laboratory, Wright Patterson AFB. U2 - PMID: 19562590. DO - 10.1080/00140130802641627 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105377392&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - West, James C. AU - Steyskal, Hans T1 - Analysis and Feeding of a Spiral Element Used in a Planar Array. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2009/07// Y1 - 2009/07// VL - 57 IS - 7 M3 - Article SP - 1931 EP - 1935 SN - 0018926X AB - The operation of a previously introduced planar array consisting of square spiral radiating elements has been analyzed by both numerical simulation and a transmission line model. The numerical results show that previously unexplained narrow resonances in the active impedance of the spiral elements result from standing waves excited on the elements through coupling from other elements. The transmission line analysis confirms that the standing waves can only be established when the spiral arm lengths are simultaneously multiples of one half the operating wavelength. The standing wave is excited only by asymmetric coupling, so the resonances are strongly established only for off-broadside scan. A method to feed the unbalanced load presented by an asymmetric spiral that is immune to the narrow resonances is proposed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPIRAL antennas KW - PHASED array antennas KW - ELECTRIC lines KW - RESONANCE KW - WAVELENGTHS N1 - Accession Number: 43426400; Source Information: Jul2009, Vol. 57 Issue 7, p1931; Subject Term: SPIRAL antennas; Subject Term: PHASED array antennas; Subject Term: ELECTRIC lines; Subject Term: RESONANCE; Subject Term: WAVELENGTHS; Subject Term: ; Number of Pages: 5p; ; Illustrations: 1 Black and White Photograph, 7 Graphs; ; Document Type: Article; L3 - 10.1109/TAP.2009.2021912 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=43426400&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Lambrecht, M. R. AU - Cartwright, K L. AU - Baum, Carl E. AU - Schamiloglu, E. T1 - Electromagnetic Modeling of Hot-Wire Detonators. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques Y1 - 2009/07// VL - 57 IS - 7 M3 - Article SP - 1707 EP - 1713 SN - 00189480 AB - An effort is underway to determine the electromagnetic (EM) characteristics of hot-wire detonators in order to quantify more precisely how they might respond to modern EM illumination. These analyses provide a precise tailored approach to EM safety and insights into IEEE Standard C95.7-2005. The analyses include a comprehensive investigation of physical detonator characteristics, which is then used to model detonators using EM theory. The theoretical analysis treats the detonator as a cascaded transmission line incorporating several different dielectric regions, and examines both differential and common mode excitation for a generic detonator geometry. This model is then implemented in MATLAB and is used to calculate the input impedance for the detonator from dc to 9 GHz. This program can then be used to quickly investigate similarly constructed hot-wire detonators by simply varying the input parameters. The model is used to predict the input impedance for a state-of-the-art blasting cap, and these predictions are then compared with experimental measurements. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ETHERNET (Local area network system) KW - WIRELESS LANs KW - STANDARDS KW - ELECTROMAGNETIC devices KW - ELECTRIC detonators KW - ELECTRIC lines KW - Detonator KW - electro-explosive device (EED) KW - modeling KW - transmission line N1 - Accession Number: 43465111; Lambrecht, M. R. 1; Cartwright, K L. 2; Baum, Carl E. 1; Schamiloglu, E. 1; Affiliations: 1: Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM 87131 USA; 2: Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87106 USA; Issue Info: Jul2009, Vol. 57 Issue 7, p1707; Thesaurus Term: ETHERNET (Local area network system); Thesaurus Term: WIRELESS LANs; Thesaurus Term: STANDARDS; Subject Term: ELECTROMAGNETIC devices; Subject Term: ELECTRIC detonators; Subject Term: ELECTRIC lines; Author-Supplied Keyword: Detonator; Author-Supplied Keyword: electro-explosive device (EED); Author-Supplied Keyword: modeling; Author-Supplied Keyword: transmission line; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238910 Site Preparation Contractors; Number of Pages: 7p; Illustrations: 4 Black and White Photographs, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1109/TMTT.2009.2022811 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=43465111&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Harvey, Gregory T1 - TROPOSPHERIC OZONE AND PLANT PERCHLORATE CONCENTRATIONS: IS THERE A CONNECTION? JO - Integrated Environmental Assessment & Management JF - Integrated Environmental Assessment & Management Y1 - 2009/07// VL - 5 IS - 3 M3 - Article SP - 488 EP - 489 PB - Wiley-Blackwell SN - 15513777 AB - This article examined the interactions of tropospheric ozone and individual ozone-sensitive plant species and crop cultivars with high foliar perchlorate. It references data which show the influence of altitude, latitude and air quality on foliar perchlorate in some plant species. It suggests sensitivity to ozone as a factor contributing to differences in foliar perchlorate levels among plants. In addition, the article notes tropospheric ozone as a pollutant that has adverse effects on the growth of natural vegetation and crops. KW - Tropospheric ozone KW - Plant species KW - Perchlorates KW - Plant varieties KW - Pollutants KW - Plant growth N1 - Accession Number: 42633871; Harvey, Gregory 1; Email Address: gregory.harvey@wpafb.af.mil; Affiliations: 1: United States Air Force Base, Dayton, Ohio, USA; Issue Info: Jul2009, Vol. 5 Issue 3, p488; Thesaurus Term: Tropospheric ozone; Thesaurus Term: Plant species; Thesaurus Term: Perchlorates; Thesaurus Term: Plant varieties; Thesaurus Term: Pollutants; Thesaurus Term: Plant growth; NAICS/Industry Codes: 111422 Floriculture Production; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=42633871&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Carrell, Scott E. AU - Fullerton, Richard L. AU - West, James E. T1 - Does Your Cohort Matter? Measuring Peer Effects in College Achievement. JO - Journal of Labor Economics JF - Journal of Labor Economics Y1 - 2009/07// VL - 27 IS - 3 M3 - Article SP - 439 EP - 464 PB - University of Chicago Press SN - 0734306X AB - We estimate peer effects in college achievement using a data set in which individuals are exogenously assigned to peer groups of about 30 students with whom they are required to spend the majority of their time interacting. This feature enables us to estimate peer effects that are more comparable to changing the entire cohort of peers. Using this broad peer group, we measure academic peer effects of much larger magnitude than found in previous studies. The effects persist at a diminished rate into follow-on years, and we find evidence of nonlinearities in the magnitude of the effects across student academic ability. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Labor Economics is the property of University of Chicago Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AFFIRMATIVE action programs KW - UNIVERSITIES & colleges KW - ECONOMICS KW - EDUCATION & state KW - AGE groups KW - CURRICULA (Courses of study) N1 - Accession Number: 43780231; Carrell, Scott E. 1,2; Fullerton, Richard L. 3; West, James E. 3; Affiliations: 1: University of California, Davis; 2: National Bureau of Economic Research; 3: United States Air Force Academy; Issue Info: Jul2009, Vol. 27 Issue 3, p439; Thesaurus Term: AFFIRMATIVE action programs; Thesaurus Term: UNIVERSITIES & colleges; Thesaurus Term: ECONOMICS; Subject Term: EDUCATION & state; Subject Term: AGE groups; Subject Term: CURRICULA (Courses of study); NAICS/Industry Codes: 923130 Administration of Human Resource Programs (except Education, Public Health, and Veterans' Affairs Programs); NAICS/Industry Codes: 923110 Administration of Education Programs; NAICS/Industry Codes: 912910 Other provincial and territorial public administration; NAICS/Industry Codes: 913910 Other local, municipal and regional public administration; NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; Number of Pages: 26p; Illustrations: 7 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=43780231&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 105370820 T1 - Appearance of the levator ani muscle subdivisions in endovaginal three-dimensional ultrasonography. AU - Shobeiri SA AU - Leclaire E AU - Nihira MA AU - Quiroz LH AU - O'Donoghue D Y1 - 2009/07// N1 - Accession Number: 105370820. Language: English. Entry Date: 20090904. Revision Date: 20150711. Publication Type: Journal Article; research. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Obstetric Care; Women's Health. NLM UID: 0401101. KW - Anus -- Ultrasonography KW - Muscle, Smooth -- Ultrasonography KW - Adult KW - Female KW - Human SP - 66 EP - 72 JO - Obstetrics & Gynecology JF - Obstetrics & Gynecology JA - OBSTET GYNECOL VL - 114 IS - 1 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 0029-7844 AD - From the 1University of Oklahoma Health Sciences Center and the 2United States Air Force, Department of Obstetrics and Gynecology, Oklahoma City, Oklahoma. U2 - PMID: 19546760. DO - 10.1097/AOG.0b013e3181aa2c89 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105370820&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2009-12232-011 AN - 2009-12232-011 AU - Fontanari, José F. AU - Tikhanoff, Vadim AU - Cangelosi, Angelo AU - Ilin, Roman AU - Perlovsky, Leonid I. T1 - Cross-situational learning of object-word mapping using neural modeling fields. T3 - Advances in neural networks research JF - Neural Networks JO - Neural Networks JA - Neural Netw Y1 - 2009/07//Jul-Aug, 2009 VL - 22 IS - 5-6 SP - 579 EP - 585 CY - Netherlands PB - Elsevier Science SN - 0893-6080 AD - Fontanari, José F., Instituto de Fisica de Sao Carlos, Universidade de Sao Paulo, Caixa Postal 369, SP, 13560-970, Sao Carlos, Brazil N1 - Accession Number: 2009-12232-011. PMID: 19596549 Partial author list: First Author & Affiliation: Fontanari, José F.; Instituto de Fisica de Sao Carlos, Universidade de Sao Paulo, Sao Carlos, Brazil. Release Date: 20100503. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Developmental Psychology; Learning; Linguistics; Neural Networks; Simulation. Minor Descriptor: Algorithms. Classification: Neural Networks (4160). Population: Human (10). Methodology: Empirical Study; Mathematical Model; Quantitative Study. References Available: Y. Page Count: 7. Issue Publication Date: Jul-Aug, 2009. Publication History: Accepted Date: Jun 25, 2009; Revised Date: May 25, 2009; First Submitted Date: May 5, 2009. Copyright Statement: All rights reserved. Elsevier Ltd. 2009. AB - The issue of how children learn the meaning of words is fundamental to developmental psychology. The recent attempts to develop or evolve efficient communication protocols among interacting robots or virtual agents have brought that issue to a central place in more applied research fields, such as computational linguistics and neural networks, as well. An attractive approach to learning an object–word mapping is the so-called cross-situational learning. This learning scenario is based on the intuitive notion that a learner can determine the meaning of a word by finding something in common across all observed uses of that word. Here we show how the deterministic Neural Modeling Fields (NMF) categorization mechanism can be used by the learner as an efficient algorithm to infer the correct object–word mapping. To achieve that we first reduce the original on-line learning problem to a batch learning problem where the inputs to the NMF mechanism are all possible object–word associations that could be inferred from the cross-situational learning scenario. Since many of those associations are incorrect, they are considered as clutter or noise and discarded automatically by a clutter detector model included in our NMF implementation. With these two key ingredients–batch learning and clutter detection–the NMF mechanism was capable to infer perfectly the correct object–word mapping. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cross situational learning KW - object word mapping KW - neural modeling KW - developmental psychology KW - linguistics KW - neural networks KW - algorithms KW - 2009 KW - Developmental Psychology KW - Learning KW - Linguistics KW - Neural Networks KW - Simulation KW - Algorithms KW - 2009 U1 - Sponsor: Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brazil. Other Details: Research at São Carlos. Recipients: No recipient indicated U1 - Sponsor: Fundacao de Amparo a Pesquisa do Estado de Sao Paulo, Brazil. Grant: 04/06156-3. Recipients: No recipient indicated U1 - Sponsor: AFOSR. Other Details: AFRL,PM Dr. D. Cochran. Recipients: No recipient indicated U1 - Sponsor: NRC. Other Details: Research Associateship programs award. Recipients: No recipient indicated DO - 10.1016/j.neunet.2009.06.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-12232-011&site=ehost-live&scope=site UR - ORCID: 0000-0002-4709-2243 UR - UR - Leonid.Perlovsky@hanscom.af.mil UR - roman.ilin.ctr@hanscom.af.mil UR - a.cangelosi@plymouth.ac.uk UR - vadim.tikhanoff@plymouth.ac.uk UR - fontanari@ifsc.usp.br DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2009-10101-003 AN - 2009-10101-003 AU - Finomore, V. AU - Matthews, G. AU - Shaw, T. AU - Warm, J. T1 - Predicting vigilance: A fresh look at an old problem. JF - Ergonomics JO - Ergonomics JA - Ergonomics Y1 - 2009/07// VL - 52 IS - 7 SP - 791 EP - 808 CY - United Kingdom PB - Taylor & Francis SN - 0014-0139 SN - 1366-5847 AD - Finomore, V. N1 - Accession Number: 2009-10101-003. PMID: 19562590 Partial author list: First Author & Affiliation: Finomore, V.; Air Force Research Laboratory, Wright Patterson, OH, US. Release Date: 20091005. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Coping Behavior; Personality Traits; Stress; Vigilance; Working Conditions. Minor Descriptor: Individual Differences; Prediction. Classification: Industrial & Organizational Psychology (3600). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 18. Issue Publication Date: Jul, 2009. Copyright Statement: Taylor & Francis. 2009. AB - Individual differences in vigilance are ubiquitous and relevant to a variety of work environments in industrial, transportation, medical and security settings. Despite much previous work, mostly on personality traits, it remains difficult to identify vigilant operators. This paper reviews recent research that may point towards practically useful predictor variables for vigilance. Theoretical approaches to identifying predictors that accommodate the heterogeneous nature of vigilance tasks are compared. The article surveys recent empirical studies using personality measures, ability tests and scales for stress and coping as predictors of vigilance. Promising new constructs include trait scales linked to fatigue, abnormal personality and the stress state of task engagement. Implications of the data reviewed for occupational selection are discussed. Selection should be based on a multivariate assessment strategy, cognitive task analysis of the operational vigilance task and use of work sample measures to capture typical stress responses to the task. This review paper surveys recent research that may point towards practically useful predictor variables for vigilance. The article surveys recent empirical studies using personality measures, ability tests and scales for stress and coping as predictors of vigilance. Selection should be based on a multivariate assessment strategy. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - vigilance KW - predictor variables KW - stress KW - coping behavior KW - individual differences KW - work environments KW - personality traits KW - 2009 KW - Coping Behavior KW - Personality Traits KW - Stress KW - Vigilance KW - Working Conditions KW - Individual Differences KW - Prediction KW - 2009 U1 - Sponsor: US Army Research Institute, US. Grant: W74V8H-06-C-0049; 06-S-1003. Recipients: No recipient indicated U1 - Sponsor: JXT Corporation. Recipients: No recipient indicated U1 - Sponsor: US Army Medical Research and Material Command, US. Grant: W81XWH-04-C-0002. Recipients: No recipient indicated DO - 10.1080/00140130802641627 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-10101-003&site=ehost-live&scope=site UR - victor@finomore.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2009-16931-007 AN - 2009-16931-007 AU - Gunzelmann, Glenn AU - Gross, Joshua B. AU - Gluck, Kevin A. AU - Dinges, David F. T1 - Sleep deprivation and sustained attention performance: Integrating mathematical and cognitive modeling. JF - Cognitive Science JO - Cognitive Science JA - Cogn Sci Y1 - 2009/07// VL - 33 IS - 5 SP - 880 EP - 910 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0364-0213 SN - 1551-6709 AD - Gunzelmann, Glenn, Air Force Research Laboratory-RHAC, 6030 South Kent Street, Mesa, AZ, US, 85212-6061 N1 - Accession Number: 2009-16931-007. PMID: 21585489 Partial author list: First Author & Affiliation: Gunzelmann, Glenn; Air Force Research Laboratory, Mesa, AZ, US. Other Publishers: Elsevier Science; Lawrence Erlbaum; Taylor & Francis. Release Date: 20100111. Correction Date: 20170216. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Conference Information: Annual Meeting of the Cognitive Science Society, 27th. Grant Information: Gross, Joshua B. Conference Note: Portions of this research were presented at the aforementioned conference. Major Descriptor: Cognitive Ability; Mathematical Modeling; Performance; Sleep Deprivation; Sustained Attention. Classification: Statistics & Mathematics (2240); Physical & Somatoform & Psychogenic Disorders (3290). Population: Human (10). Tests & Measures: Psychomotor Vigilance Test DOI: 10.1037/t58155-000. Methodology: Empirical Study; Mathematical Model; Quantitative Study. References Available: Y. Page Count: 31. Issue Publication Date: Jul, 2009. Publication History: Accepted Date: Sep 1, 2008; Revised Date: Aug 27, 2008; First Submitted Date: Oct 30, 2007. Copyright Statement: All rights reserved. Cognitive Science Society, Inc. 2009. AB - A long history of research has revealed many neurophysiological changes and concomitant behavioral impacts of sleep deprivation, sleep restriction, and circadian rhythms. Little research, however, has been conducted in the area of computational cognitive modeling to understand the information processing mechanisms through which neurobehavioral factors operate to produce degradations in human performance. Our approach to understanding this relationship is to link predictions of overall cognitive functioning, or alertness, from existing biomathematical models to information processing parameters in a cognitive architecture, leveraging the strengths from each to develop a more comprehensive explanation. The integration of these methodologies is used to account for changes in human performance on a sustained attention task across 88 h of total sleep deprivation. The integrated model captures changes due to time awake and circadian rhythms, and it also provides an account for underlying changes in the cognitive processes that give rise to those effects. The results show the potential for developing mechanistic accounts of how fatigue impacts cognition, and they illustrate the increased explanatory power that is possible by combining theoretical insights from multiple methodologies. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - sleep deprivation KW - sustained attention KW - human performance KW - mathematical modeling KW - cognitive modeling KW - cognitive functioning KW - 2009 KW - Cognitive Ability KW - Mathematical Modeling KW - Performance KW - Sleep Deprivation KW - Sustained Attention KW - 2009 U1 - Sponsor: Air Force Research Laboratory’s (AFRL), Warfighter Readiness Research Division. Recipients: No recipient indicated U1 - Sponsor: US Air Force Office of Scientific Research, US. Grant: 04HE02COR; 07HE01COR. Recipients: No recipient indicated U1 - Sponsor: US Air Force Office of Scientific Research, US. Grant: F49620-95-1-0388; F49620-00-1-0266. Recipients: No recipient indicated U1 - Sponsor: National Institutes of Health, US. Grant: RR00040. Recipients: No recipient indicated U1 - Sponsor: Air Force Research Laboratory (AFRL). Other Details: Internship administered by the Oak Ridge Institute for Science and Education. Recipients: Gross, Joshua B. DO - 10.1111/j.1551-6709.2009.01032.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-16931-007&site=ehost-live&scope=site UR - glenn.gunzelmann@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Camargo, Jose F. AU - Kulkarni, Hemant AU - Agan, Brian K. AU - Gaitan, Alvaro A. AU - Beachy, Lisa A. AU - Srinivas, Sowmya AU - Weijing He AU - Anderson, Stephanie AU - Marconi, Vincent C. AU - Dolan, Matthew J. AU - Ahuja, Sunil K. T1 - Responsiveness of T Cells to Interleukin-7 Is Associated with Higher CD4+ T Cell Counts in HIV-1-Positive Individuals with Highly Active Antiretroviral Therapy-Induced Viral Load Suppression. JO - Journal of Infectious Diseases JF - Journal of Infectious Diseases Y1 - 2009/06/15/ VL - 199 IS - 12 M3 - Article SP - 1872 EP - 1882 SN - 00221899 AB - Background. Despite suppression of the human immunodeficiency virus type1 (HIV-1)load by highly active antiretroviral therapy (HAART), recovery of CD4+ Tcell counts can be impaired. We investigated whether this impairment may be associated with hyporesponsiveness of T cells to γ-chain (γc) cytokines known to influence T cell homeostasis. Methods. The responsiveness of T cells to interleukin (IL)-2, IL-7, and IL-15 was determined by assessing cytokine-induced phosphorylation of the signal transducer and activator of transcription 5 (STAT5) in peripheral T cells obtained from 118 HIV-positive subjects and 13 HIV-negative subjects. Results. The responsiveness of T cells to interleukin (IL)-7 but not to IL-2 or IL-15 was lower among HIV-positive subjects than among HIV-negative subjects. Among subjects with viral load suppression, the degree of IL-7 responsiveness (1) correlated with naive CD4+ T cell counts and was a better immune correlate of the prevailing CD4+ T cell count than were levels of human leukocyte antigen-DR1 or programmed death-1, which are predictors of T cell homeostasis during HIV infection; and (2) was greater in subjects with complete (i.e., attainment of ⩾500 CD4+ T cells/mm³ ⩾5 years after initiation of HAART) versus incomplete immunologic responses. The correlation between plasma levels of IL-7 and CD4+ T cell counts during HAART was maximal in subjects with increased IL-7 responsiveness. Conclusions. Responsiveness of T cells to IL-7 is associated with higher CD4+ T cell counts during HAART and thus may be a determinant of the extent of immune reconstitution. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Infectious Diseases is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIV (Viruses) KW - Physiology KW - Biological control systems KW - T cells KW - Immune system KW - Highly active antiretroviral therapy KW - HIV infections KW - CD antigens KW - Viral receptors KW - Cells N1 - Accession Number: 41534709; Camargo, Jose F. 1,2; Kulkarni, Hemant 1,2; Agan, Brian K. 3; Gaitan, Alvaro A. 1,2; Beachy, Lisa A. 1,2; Srinivas, Sowmya 1,2; Weijing He 1,2; Anderson, Stephanie 3,4,5,6; Marconi, Vincent C. 3,4,6; Dolan, Matthew J. 4,5,6; Ahuja, Sunil K. 1,2,7,8; Affiliations: 1: Veterans Administration Research Center for AIDS and HIV-1 Infection, South Texas Veterans Health Care System, San Antonio, Texas; 2: Department of Medicine, University of Texas Health Science Center, San Antonio, Texas; 3: Infectious Disease Clinical Research Program, Uniformed Services University of the Health Sciences, Bethesda, Maryland; 4: Infectious Diseases Service, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas; 5: Henry M. Jackson Foundation, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base; 6: San Antonio Military Medical Center, Fort Sam Houston and Lackland Air Force Base, Texas; 7: Department of Microbiology and Immunology, University of Texas Health Science Center, San Antonio, Texas; 8: Department of Biochemistry, University of Texas Health Science Center, San Antonio, Texas; Issue Info: 6/15/2009, Vol. 199 Issue 12, p1872; Thesaurus Term: HIV (Viruses); Thesaurus Term: Physiology; Thesaurus Term: Biological control systems; Subject Term: T cells; Subject Term: Immune system; Subject Term: Highly active antiretroviral therapy; Subject Term: HIV infections; Subject Term: CD antigens; Subject Term: Viral receptors; Subject Term: Cells; Number of Pages: 11p; Document Type: Article L3 - 10.1086/598858 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=41534709&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Polak, Milan AU - Barnes, Paul N. AU - Mozola, Pavol AU - Levin, George A. T1 - Critical Current in YBCO Coated Conductors in the Presence of a Macroscopic Defect. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2009/06/03/Jun2009 Part 3 of 3 Y1 - 2009/06/03/Jun2009 Part 3 of 3 VL - 19 IS - 3 M3 - Article SP - 2921 EP - 2924 SN - 10518223 AB - We have studied the effects of localized defects in the YBCO coated conductors on the critical current. The artificial defects were introduced into 4, 10 and 12 mm wide tapes as cuts of various lengths made either by laser ablation or mechanical means. Transport measurements were carried out in an external variable magnetic field to obtain the I-V characteristics of the damaged areas. The distribution of the magnetic field in the vicinity of the defects has been mapped as well. The reduction of the critical current by the defects, with and without an external DC magnetic field are discussed and compared with existing theories. A criterion for determining the critical current in the area containing a defect is suggested. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRITICAL currents KW - ELECTRIC conductors KW - LASER ablation KW - MAGNETIC fields KW - HIGH temperature superconductors N1 - Accession Number: 43891951; Source Information: Jun2009 Part 3 of 3, Vol. 19 Issue 3, p2921; Subject Term: CRITICAL currents; Subject Term: ELECTRIC conductors; Subject Term: LASER ablation; Subject Term: MAGNETIC fields; Subject Term: HIGH temperature superconductors; Subject Term: ; Number of Pages: 4p; ; Illustrations: 6 Graphs; ; Document Type: Article; L3 - 10.1109/TASC.2009.2019090 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=43891951&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Varanasi, Chakrapani V. AU - Burke, J. AU - Brunke, L. AU - Lee, J. H. AU - Wang, H. AU - Barnes, Paul N. T1 - Comparative Study Between Similarly Processed YBa2Cu3O7-x Films With Y2BaCuO5 or BaSnO3 Additions. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2009/06/03/Jun2009 Part 3 of 3 Y1 - 2009/06/03/Jun2009 Part 3 of 3 VL - 19 IS - 3 M3 - Article SP - 3152 EP - 3155 SN - 10518223 AB - A special YBa2Cu3O7-x (YBCO) target with a thin sector of second phase material, in this case either Y2BaCuO5 (Y211) or BaSnO3 (BSO), was used to deposit YBCO films with non-layered nanoparticles on single crystal LaAlO3 and biaxially textured Ni-S at.% W substrates buffered with CeO2 and YSZ layers(coated conductors). Although identical processing conditions were used, TEM images indicated that random Y211 nanoparticles in the case of YBCO+Y211, and evenly spaced BSO nanocolumns iii the case of YBCO+BSO, form in the YBCO films. While YBCO plane buckling was observed at many places in the case of YBCO+Y211, a high density of stacking faults and dislocations were observed in the case of YBCO+BSO near the BSO columns. In transport critical current density (Jo) angular dependence measurements, the absence of nanocolumns in YBCO+Y211 films resulted in the absence of a peak at 0°, J(H//e), in Jc vs. θ plots, as compared to a clear peak at 0° observed in YBCO+BSO films with the nanocolumns. The in-field J measurements indicated small low-field Jc enhancements at 77 K in YBCO+Y211 films but more than an order of magnitude improvement in high-field Jc in YBCO+BSO films due to the differences in the microstructures. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - NANOPARTICLES KW - NUCLEAR reactors -- Buckling KW - CRITICAL currents KW - MICROSTRUCTURE N1 - Accession Number: 43892006; Source Information: Jun2009 Part 3 of 3, Vol. 19 Issue 3, p3152; Subject Term: THIN films; Subject Term: NANOPARTICLES; Subject Term: NUCLEAR reactors -- Buckling; Subject Term: CRITICAL currents; Subject Term: MICROSTRUCTURE; Subject Term: ; Number of Pages: 4p; ; Illustrations: 6 Black and White Photographs, 3 Graphs; ; Document Type: Article; L3 - 10.1109/TASC.2009.2018420 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=43892006&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Haugan, Timothy J. AU - Baca, F. Javier AU - Mullins, Matthew J. AU - Pierce, Neal A. AU - Campbell, Timothy A. AU - Brewster, Eric L. AU - Barnes, Paul N. AU - Wang, Haiyan AU - Sumption, Michael D. T1 - Temperature and Magnetic Field Dependence of Critical Current Density of YBCO With Varying Flux Pinning Additions. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2009/06/03/Jun2009 Part 3 of 3 Y1 - 2009/06/03/Jun2009 Part 3 of 3 VL - 19 IS - 3 M3 - Article SP - 3270 EP - 3274 SN - 10518223 AB - The critical current density (Jc) of YBa2Cu3O7-z films doped with varying flux pinning nanoparticle additions was systematically studied, for applied magnetic fields of H = 0-9 T and operation temperatures T = 20-77 K. Films were prepared with pulsed laser deposition by (M/YBCO)N multilayer or (YBCO)1-xMx single-target methods, for different M phases including Y2O3, Y2BaCuO5 (Y211) green-phase, and BaZrO3. Very significant differences of Jc(H//c, 20 - 77 K) were measured for optimized M phase additions, that are difficult to model or predict at present. Multilayer films with Y211 and Y2O3 nanoparticle additions had the highest Jc(20 - 77K) for H < 4 T, and YBCO+BZO-nanorod samples had the strongest Jc(H) for H > 4 T and 65-77 K, however not for T < 50 K. Seemingly unusual Jc(H, T) properties were measured for (BZO/YBCO)N multilayer films when compared to YBCO and other doped films; Jc(H) was almost the same as YBCO at 77 K, however at 30 K Jc(H > 2 T) had the strongest properties increasing 70% compared to YBCO+nanoaddition films and increasing 400% compared to YBCO. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRITICAL currents KW - SUPERCONDUCTIVITY KW - FLUX pinning KW - SEMICONDUCTOR nanoparticles KW - HIGH temperature superconductors KW - MULTILAYERED thin films KW - PULSED laser deposition KW - MAGNETIC fields N1 - Accession Number: 43892034; Source Information: Jun2009 Part 3 of 3, Vol. 19 Issue 3, p3270; Subject Term: CRITICAL currents; Subject Term: SUPERCONDUCTIVITY; Subject Term: FLUX pinning; Subject Term: SEMICONDUCTOR nanoparticles; Subject Term: HIGH temperature superconductors; Subject Term: MULTILAYERED thin films; Subject Term: PULSED laser deposition; Subject Term: MAGNETIC fields; Subject Term: ; Number of Pages: 5p; ; Illustrations: 1 Black and White Photograph, 1 Chart, 4 Graphs; ; Document Type: Article; L3 - 10.1109/TASC.2009.2018260 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=43892034&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Sokolovsky, Vladimir AU - Meerovich, Victor AU - Spektor, Marat AU - Levin, George A. AU - Vajda, Istvan T1 - Losses in Superconductors Under Non-Sinusoidal Currents and Magnetic Fields. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2009/06/03/Jun2009 Part 3 of 3 Y1 - 2009/06/03/Jun2009 Part 3 of 3 VL - 19 IS - 3 M3 - Article SP - 3344 EP - 3347 SN - 10518223 AB - Study of AC losses in superconducting wires and tapes is usually restricted by consideration of applied sinusoidal currents and/or magnetic fields. However, currents in electric power systems contain a wide variety of harmonics. The currents become strongly non-sinusoidal at the operation of converters, non-linear reactors, and during transient and overload conditions. We report the results of the analysis of the influence of higher harmonics of the current and magnetic field on AC losses in superconducting slabs, strips and coated conductors. Analytical expressions are obtained in the framework of Bean's critical state model; the power law voltage-current characteristics are treated numerically. It is shown that the contribution of higher harmonics to AC losses in superconducting elements can be tens times larger than in normal metals and the 5% harmonic can increases the losses by up to 20%. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTORS -- Magnetic properties KW - MAGNETIC fields KW - ELECTRIC power systems KW - SUPERCONDUCTIVITY KW - HARMONICS (Electric waves) N1 - Accession Number: 43892052; Source Information: Jun2009 Part 3 of 3, Vol. 19 Issue 3, p3344; Subject Term: SUPERCONDUCTORS -- Magnetic properties; Subject Term: MAGNETIC fields; Subject Term: ELECTRIC power systems; Subject Term: SUPERCONDUCTIVITY; Subject Term: HARMONICS (Electric waves); Subject Term: ; Number of Pages: 4p; ; Illustrations: 4 Graphs; ; Document Type: Article; L3 - 10.1109/TASC.2009.2019206 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=43892052&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Baca, F. Javier AU - Emergo, Rose Lyn AU - Wu, Judy Z. AU - Haugan, Timothy J. AU - Reichart, Joshua N. AU - Barnes, Paul N. T1 - Micro structural Characterization of YBa2Cu3O7-x Films With BaZrO3 Nanorods Grown on Vicinal SrTiO3 Substrates. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2009/06/03/Jun2009 Part 3 of 3 Y1 - 2009/06/03/Jun2009 Part 3 of 3 VL - 19 IS - 3 M3 - Article SP - 3371 EP - 3374 SN - 10518223 AB - When grown on miscut SrTiO3 substrates, significant microstructural changes are observed in BaZrO3-doped YBa2Cu3O7-x thin films when compared to those on non-vicinal substrates. Scanning Electron Microscopy indicates a surface morphology strongly influenced by the vicinal angle, and an accumulation of BaZrO3 particles is observed near the step edges. Cross-sectional Transmission Electron Microscopy reveals that while the columnar formations of BaZrO3 rods typically seen on non-vicinal substrates are present, a significant increase in planar defects in a 100 vicinal film are observed. The effects observed with increasing miscut angle indicate that the modulated surface provided by the vicinal substrate influences the crystalline quality of the YBCO matrix and BZO columnar formation through the thickness of the film. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTORS KW - THIN films KW - SCANNING electron microscopy KW - MAGNETIC fields KW - MICROSTRUCTURE N1 - Accession Number: 43892058; Source Information: Jun2009 Part 3 of 3, Vol. 19 Issue 3, p3371; Subject Term: SUPERCONDUCTORS; Subject Term: THIN films; Subject Term: SCANNING electron microscopy; Subject Term: MAGNETIC fields; Subject Term: MICROSTRUCTURE; Subject Term: ; Number of Pages: 4p; ; Illustrations: 3 Black and White Photographs, 1 Chart, 1 Graph; ; Document Type: Article; L3 - 10.1109/TASC.2009.2017908 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=43892058&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Levin, George A. AU - Barnes, Paul N. AU - Rodriguez, Jose P. AU - Connors, Jake A. AU - Bulmer, John S. T1 - Stability and Normal Zone Propagation Speed in YBCO Coated Conductors With Increased Interfacial Resistance. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2009/06/02/Jun2009 Part 2 of 3 Y1 - 2009/06/02/Jun2009 Part 2 of 3 VL - 19 IS - 3 M3 - Article SP - 2504 EP - 2507 SN - 10518223 AB - We will discuss how stability and speed of normal zone propagation in YBCO-coated conductors is affected by interfacial resistance between the superconducting film and the stabilizer. Our numerical simulation has shown that the increased interfacial resistance substantially increases speed of normal zone propagation and decreases the stability margins. Optimization of the value of the resistance may lead to a better compromise between stability and quench protection requirements than what is found in currently manufactured coated conductors. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC lines -- Superconducting KW - ELECTRIC power system stability KW - SUPERCONDUCTORS -- Equipment & supplies KW - ELECTRIC wire -- Testing KW - ELECTRIC currents -- Heating effects KW - ELECTRIC resistance N1 - Accession Number: 43924001; Source Information: Jun2009 Part 2 of 3, Vol. 19 Issue 3, p2504; Subject Term: ELECTRIC lines -- Superconducting; Subject Term: ELECTRIC power system stability; Subject Term: SUPERCONDUCTORS -- Equipment & supplies; Subject Term: ELECTRIC wire -- Testing; Subject Term: ELECTRIC currents -- Heating effects; Subject Term: ELECTRIC resistance; Subject Term: ; Number of Pages: 4p; ; Illustrations: 3 Graphs; ; Document Type: Article; L3 - 10.1109/TASC.2009.2019604 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=43924001&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - PELTIER, JEAN-PHILIPPE N. AU - MEER, THOMAS T1 - Air Domain Development in Africa. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2009///Summer2009 Y1 - 2009///Summer2009 VL - 23 IS - 2 M3 - Article SP - 111 EP - 113 PB - Superintendent of Documents SN - 1555385X AB - The article focuses on the need of air domain development (ADD) in Africa. ADD highlights the building of a national air domain by increasing the air safety and expanding trade through development of civil-military partnerships while working towards control of the sovereign airspace. ADD can enhance economic growth and political stability on a troubled and instable continent. KW - AIR power (Military science) KW - POLITICAL stability KW - ECONOMIC development KW - CIVIL-military relations KW - AFRICA N1 - Accession Number: 43979550; Source Information: Summer2009, Vol. 23 Issue 2, p111; Subject Term: AIR power (Military science); Subject Term: POLITICAL stability; Subject Term: ECONOMIC development; Subject Term: CIVIL-military relations; Subject Term: ; Geographic Subject: AFRICA; Geographic Subject: ; Number of Pages: 3p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=43979550&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Basler, Matt T1 - Rampant Raider: An A-4 Skyhawk Pilot in Vietnam. JO - Air Power History JF - Air Power History J1 - Air Power History PY - 2009///Summer2009 Y1 - 2009///Summer2009 VL - 56 IS - 2 M3 - Book Review SP - 52 EP - 52 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "Rampant Raider: An A-4 Skyhawk Pilot in Vietnam," by Stephen R. Gray. KW - RAMPANT Raider: An A-4 Skyhawk Pilot in Vietnam (Book) KW - GRAY, Stephen R. KW - VIETNAM War, 1961-1975 KW - NONFICTION N1 - Accession Number: 41577011; Source Information: Summer2009, Vol. 56 Issue 2, p52; Subject Term: RAMPANT Raider: An A-4 Skyhawk Pilot in Vietnam (Book); Subject Term: GRAY, Stephen R.; Subject Term: VIETNAM War, 1961-1975; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 1/3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=41577011&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Pomeroy, Steven A. T1 - We Flew, We Fell, We Lived: Stories from RCAF Prisoners of War and Evaders, 1939-1945. JO - Air Power History JF - Air Power History J1 - Air Power History PY - 2009///Summer2009 Y1 - 2009///Summer2009 VL - 56 IS - 2 M3 - Book Review SP - 53 EP - 54 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "We Flew, We Fell, We Lived: Stories from RCAF Prisoners of War and Evaders, 1939-1945," by Philip Lagrandeur. KW - WE Flew, We Fell, We Lived: Stories From RCAF Prisoners of War & Evaders 1939-1945 (Book) KW - LAGRANDEUR, Philip KW - PRISONERS of war KW - NONFICTION N1 - Accession Number: 41577014; Source Information: Summer2009, Vol. 56 Issue 2, p53; Subject Term: WE Flew, We Fell, We Lived: Stories From RCAF Prisoners of War & Evaders 1939-1945 (Book); Subject Term: LAGRANDEUR, Philip; Subject Term: PRISONERS of war; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=41577014&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Harahsheh, Ashraf AU - Doty, Angela T1 - Choices We Make. JO - Clinical Pediatrics JF - Clinical Pediatrics Y1 - 2009/06// VL - 48 IS - 5 M3 - Article SP - 481 EP - 482 SN - 00099228 AB - A personal narrative is presented which explores the author's experience of the importance of balancing careers, marriages and children. KW - FIRST person narrative KW - WORK & family N1 - Accession Number: 40396011; Harahsheh, Ashraf 1; Email Address: aharahsh@cnmc.org; Doty, Angela 1,2; Source Information: Jun2009, Vol. 48 Issue 5, p481; Subject: FIRST person narrative; Subject: WORK & family; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=40396011&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - AU - Insoo Woo1, iwoo@purdue.edu AU - SungYe Kim1, inside@purdue.edu AU - Maciejewski, Ross1, rmacieje@purdue.edu AU - Ebert, David S.1, ebertd@purdue.edu AU - Ropp, Timothy D.2, tropp@purdue.edu AU - Thomas, Krystal3, Krystal.Thomas@wpafb.af.mil T1 - SDViz: A Context-Preserving Interactive Visualization System for Technical Diagrams. JO - Computer Graphics Forum JF - Computer Graphics Forum J1 - Computer Graphics Forum PY - 2009/06// Y1 - 2009/06// VL - 28 IS - 3 CP - 3 M3 - Article SP - 943 EP - 950 SN - 01677055 AB - When performing daily maintenance and repair tasks, technicians require access to a variety of technical diagrams. As technicians trace components and diagrams from page-to-page, within and across manuals, the contextual information of the components they are analyzing can easily be lost. To overcome these issues, we have developed a Schematic Diagram Visualization System (SDViz) designed for maintaining and highlighting contextual information in technical documents, such as schematic and wiring diagrams. Our system incorporates various features to aid in the navigation and diagnosis of faults, as well as maintaining contextual information when tracing components/connections through multiple diagrams. System features include highlighting relationships between components and connectors, diagram annotation tools, the animation of flow through the system, a novel contextual blending method, and a variety of traditional focus+context visualization techniques. We have evaluated the usefulness of our system through a qualitative user study in which subjects utilized our system in diagnosing faults during a standard aircraft maintenance exercise. [ABSTRACT FROM AUTHOR] KW - Visualization KW - Charts, diagrams, etc. KW - Computer file sharing KW - Cognitive analysis KW - Mental models theory (Communication) KW - Reasoning (Logic) KW - I.3.6 [Computer Graphics]: Methodology and Techniques—Interaction techniques KW - I.3.8 [Computer Graphics]: Applications N1 - Accession Number: 43460258; Authors: Insoo Woo 1 Email Address: iwoo@purdue.edu; SungYe Kim 1 Email Address: inside@purdue.edu; Maciejewski, Ross 1 Email Address: rmacieje@purdue.edu; Ebert, David S. 1 Email Address: ebertd@purdue.edu; Ropp, Timothy D. 2 Email Address: tropp@purdue.edu; Thomas, Krystal 3 Email Address: Krystal.Thomas@wpafb.af.mil; Affiliations: 1: Electrical and Computer Engineering, Purdue University, USA; 2: Aviation Technology, Purdue University, USA; 3: Air Force Research Laboratory, USA; Subject: Visualization; Subject: Charts, diagrams, etc.; Subject: Computer file sharing; Subject: Cognitive analysis; Subject: Mental models theory (Communication); Subject: Reasoning (Logic); Author-Supplied Keyword: I.3.6 [Computer Graphics]: Methodology and Techniques—Interaction techniques; Author-Supplied Keyword: I.3.8 [Computer Graphics]: Applications; Number of Pages: 8p; Illustrations: 1 Color Photograph, 5 Diagrams, 1 Graph; Record Type: Article L3 - 10.1111/j.1467-8659.2009.01454.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=asu&AN=43460258&site=ehost-live&scope=site DP - EBSCOhost DB - asu ER - TY - JOUR AU - Cheng-Yen Chen AU - Hsin-Wen Fan AU - Kuo, Spencer P. AU - Jenghwa Chang AU - Pedersen, Todd AU - Mills, Travis J. AU - Cheng-Chiu Huang T1 - Blood Clotting by Low-Temperature Air Plasma. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2009/06//Jun2009 Part 1 of 2 Y1 - 2009/06//Jun2009 Part 1 of 2 VL - 37 IS - 6 M3 - Article SP - 993 EP - 999 SN - 00933813 AB - In this paper, the feasibility and effectiveness of using an air-plasma torch to clot blood are studied. The emission spectroscopy and temperature measurement of the torch show that the torch produces abundant atomic oxygen in the plasma effluent. Anticoagulated whole-blood samples (10 μl) were tested for two cases: 1) sample exposed to the plasma effluent and 2) sample exposed to a heated airflow; in both cases, the increase of the sample temperature was controlled to be about the same. No indication of blood coagulation was observed in the second case; on the other hand, in the first case when the blood sample was exposed directly to the plasma effluent, a shell was formed on the surface of the blood sample. The experimental results demonstrated that this plasma torch could clot a blood sample via a nonthermal mechanism. The dependence of the degree of blood clotting on the atomic-oxygen flux was demonstrated by varying the exposure distance. Experimental results also showed that blood coagulation was seen in the treated platelet-rich plasma sample but not in the treated platelet-poor plasma sample. Moreover, plasma treatment with multiple short exposures was shown as more effective in clotting blood than that of applying a continuous exposure with the same total exposure time. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BLOOD coagulation KW - LOW temperature plasmas KW - PLASMA (Ionized gases) KW - EMISSION spectroscopy KW - TEMPERATURE measurements KW - AIR flow KW - COAGULATION N1 - Accession Number: 42835925; Source Information: Jun2009 Part 1 of 2, Vol. 37 Issue 6, p993; Subject Term: BLOOD coagulation; Subject Term: LOW temperature plasmas; Subject Term: PLASMA (Ionized gases); Subject Term: EMISSION spectroscopy; Subject Term: TEMPERATURE measurements; Subject Term: AIR flow; Subject Term: COAGULATION; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TPS.2009.2016344 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=42835925&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ong, Bruce A. AU - Forester, Joseph AU - Fallot, Andre T1 - Does Influenza Vaccination Improve Pediatric Asthma Outcomes? JO - Journal of Asthma JF - Journal of Asthma Y1 - 2009/06// VL - 46 IS - 5 M3 - Article SP - 477 EP - 480 SN - 02770903 AB - Objective. Controversy exists regarding the effectiveness of influenza vaccination in preventing influenza-related asthma exacerbations in the pediatric population. While yearly influenza immunization is widely recommended for children with asthma, there is currently little evidence to support this practice. Several studies have demonstrated no measurable benefit in asthma outcomes. This study sought to determine whether influenza vaccination status is associated with indicators of asthma morbidity within the military pediatric population. Methods. A survey was conducted of patients 3 to 18 years of age with a diagnosis of asthma enrolled in the pediatric clinics of Brooke Army Medical Center, Fort Sam Houston, Texas, and Wilford Hall Medical Center, Lackland Air Force Base, Texas. Management practices and outcomes for 80 children were evaluated. Data were analyzed using the statistical package SPSS version 12 (SPSS Inc., Chicago). Univariate analyses were performed to identify associations between influenza vaccination, selected demographic variables and asthma exacerbation defined by oral steroid prescription, hospital visits, and unscheduled clinic or emergency department visits for asthma symptoms. Logistic regression analyses were conducted to detect possible confounding variables. Results. In the univariate analyses, current influenza vaccination status was associated with a significant reduction of oral steroid use in the 12 months before the survey. This relationship was appreciated to a lesser extent with emergency department or unscheduled clinic visits in the last 12 months. No significant differences were found regarding the distribution of influenza vaccination status across selected demographic variables. In the multivariate analyses, current influenza vaccination status was independently associated with significantly decreased odds of using oral steroids in the previous 12 months. There was no evidence of confounding or effect modification. Conclusions. This study suggests influenza vaccination is associated with fewer asthma exacerbations. After controlling for several potential confounding variables, administration of influenza vaccine was associated with a protective effect against indicators of asthma exacerbations. Our results indicate that children with asthma in the military beneficiary population may benefit from annual influenza vaccination. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Asthma is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFLUENZA -- Vaccination -- Research KW - ASTHMA in children -- Research KW - ASTHMA -- Diagnosis KW - PEDIATRICS KW - IMMUNIZATION KW - LOGISTIC regression analysis KW - asthma KW - immunizations KW - influenza KW - military KW - pediatrics N1 - Accession Number: 41998695; Ong, Bruce A. 1; Email Address: bruce.ong@us.army.mil; Forester, Joseph 2; Fallot, Andre 3; Source Information: Jun2009, Vol. 46 Issue 5, p477; Subject: INFLUENZA -- Vaccination -- Research; Subject: ASTHMA in children -- Research; Subject: ASTHMA -- Diagnosis; Subject: PEDIATRICS; Subject: IMMUNIZATION; Subject: LOGISTIC regression analysis; Author-Supplied Keyword: asthma; Author-Supplied Keyword: immunizations; Author-Supplied Keyword: influenza; Author-Supplied Keyword: military; Author-Supplied Keyword: pediatrics; Number of Pages: 4p; Illustrations: 2 Charts; Document Type: Article L3 - 10.1080/02770900902795538 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=41998695&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Brungart, Douglas S. AU - Chang, Peter S. AU - Simpson, Brian D. AU - Wang, DeLiang T1 - Multitalker speech perception with ideal time-frequency segregation: Effects of voice characteristics and number of talkers. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2009/06// VL - 125 IS - 6 M3 - Article SP - 4006 EP - 4022 SN - 00014966 AB - When a target voice is masked by an increasingly similar masker voice, increases in energetic masking are likely to occur due to increased spectro-temporal overlap in the competing speech waveforms. However, the impact of this increase may be obscured by informational masking effects related to the increased confusability of the target and masking utterances. In this study, the effects of target-masker similarity and the number of competing talkers on the energetic component of speech-on-speech masking were measured with an ideal time-frequency segregation (ITFS) technique that retained all the target-dominated time-frequency regions of a multitalker mixture but eliminated all the time-frequency regions dominated by the maskers. The results show that target-masker similarity has a small but systematic impact on energetic masking, with roughly a 1 dB release from masking for same-sex maskers versus same-talker maskers and roughly an additional 1 dB release from masking for different-sex masking voices. The results of a second experiment measuring ITFS performance with up to 18 interfering talkers indicate that energetic masking increased systematically with the number of competing talkers. These results suggest that energetic masking differences related to target-masker similarity have a much smaller impact on multitalker listening performance than energetic masking effects related to the number of competing talkers in the stimulus and non-energetic masking effects related to the confusability of the target and masking voices. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Speech perception KW - Audio frequency KW - Voice frequency KW - Oral communication KW - Auditory perception KW - Audiology KW - Auditory masking KW - Decibels KW - Sound measurement N1 - Accession Number: 40925783; Brungart, Douglas S. 1; Email Address: douglas.brungart@wpafb.af.mil; Chang, Peter S. 2; Simpson, Brian D. 1; Wang, DeLiang 3; Affiliations: 1: Air Force Research Laboratory, Human Effectiveness Directorate, 2610 Seventh Street, Wright-Patterson AFB, Ohio 45433.; 2: Department of Computer Science and Engineering, The Ohio State University, Columbus, Ohio 43210.; 3: Department of Computer Science and Engineering and Center for Cognitive Science, The Ohio State University, Columbus, Ohio 43210.; Issue Info: Jun2009, Vol. 125 Issue 6, p4006; Thesaurus Term: Speech perception; Thesaurus Term: Audio frequency; Thesaurus Term: Voice frequency; Thesaurus Term: Oral communication; Thesaurus Term: Auditory perception; Thesaurus Term: Audiology; Subject Term: Auditory masking; Subject Term: Decibels; Subject Term: Sound measurement; Number of Pages: 17p; Illustrations: 1 Black and White Photograph, 3 Charts, 5 Graphs; Document Type: Article L3 - 10.1121/1.3117686 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=40925783&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR ID - 2009-10073-006 AN - 2009-10073-006 AU - Sherr, Michael E. AU - Rogers, Robin K. AU - Dennison, Angela AU - Paul, Daphne T1 - Exploring the role of research in evangelical service organizations: Lessons from a university/agency partnership. JF - Social Work & Christianity JO - Social Work & Christianity Y1 - 2009///Sum 2009 VL - 36 IS - 2 SP - 217 EP - 229 CY - US PB - North American Association of Christians in Social Work NACSW SN - 0737-5778 SN - 1944-7779 AD - Sherr, Michael E., School of Social Work, Baylor University, One Bear Place 97320, Waco, TX, US, 76798-7320 N1 - Accession Number: 2009-10073-006. Partial author list: First Author & Affiliation: Sherr, Michael E.; School of Social Work, Baylor University, Waco, TX, US. Release Date: 20100208. Correction Date: 20150518. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Collaboration; Evangelists; Religious Organizations; Social Casework; Agency. Minor Descriptor: Experimentation. Classification: Religion (2920); Community & Social Services (3373). Population: Human (10). References Available: Y. Page Count: 13. Issue Publication Date: Sum 2009. AB - Amid the continuum of different types of religious organizations and the growing interest of religion in the social work literature, we put forward an article that focuses on evangelical organizations. Our goals in this paper are threefold. First, we examine the context of evangelical organizations providing services and the unique role of research in such settings. Second, we present our findings and experiences from a recent research partnership with an evangelical organization. Third, we set forth recommendations for future university/agency partnerships with evangelical organizations. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - research roles KW - evangelical service organizations KW - university agency partnership KW - social workers KW - 2009 KW - Collaboration KW - Evangelists KW - Religious Organizations KW - Social Casework KW - Agency KW - Experimentation KW - 2009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-10073-006&site=ehost-live&scope=site UR - daphne.paul@eglin.ag.mil UR - angela_dennison@baylor.edu UR - rob_rogers@baylor.edu UR - michael_sherr@baylor.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Balasubramanyam, A. AU - Sailaja, N. AU - Mahboob, M. AU - Rahman, M.F. AU - Misra, S. AU - Hussain, Saber M. AU - Grover, Paramjit T1 - Evaluation of genotoxic effects of oral exposure to Aluminum oxide nanomaterials in rat bone marrow JO - Mutation Research/Genetic Toxicology & Environmental Mutagenesis JF - Mutation Research/Genetic Toxicology & Environmental Mutagenesis Y1 - 2009/05/31/ VL - 676 IS - 1/2 M3 - Article SP - 41 EP - 47 SN - 13835718 AB - Abstract: Nanomaterials have novel properties and functions because of their small size. The unique nature of nanomaterials may be associated with potentially toxic effects. The aim of this study was to evaluate the in vivo genotoxicity of rats exposed with Aluminum oxide nanomaterials. Hence in the present study, the genotoxicity of Aluminum oxide nanomaterials (30 and 40nm) and its bulk material was studied in bone marrow of female Wistar rats using chromosomal aberration and micronucleus assays. The rats were administered orally with the doses of 500, 1000 and 2000mg/kg bw. Statistically significant genotoxicity was observed with Aluminum oxide 30 and 40nm with micronucleus as well as chromosomal aberration assays. Significantly (p <0.05 or p <0.001) increased frequency of MN was observed with 1000 and 2000mg/kg bw dose levels of Aluminum oxide 30nm (9.4±1.87 and 15.2±2.3, respectively) and Aluminum oxide 40nm (8.1±1.8 and 13.9±2.21, respectively) over control (2.5±0.7) at 30h. Likewise, at 48h sampling time a significant (p <0.05 or p <0.001) increase in frequency of MN was evident at 1000 and 2000mg/kg bw dose levels of Aluminum oxide 30nm (10.6±1.68 and 16.6±2.66, respectively) and Aluminum oxide 40nm (9.0±1.38 and 14.7±1.68, respectively) compared to control (1.8±0.75). Significantly increased frequencies (p <0.05 or p <0.001) of chromosomal aberrations were observed with Aluminum oxide 30nm (1000 and 2000mg/kg bw) and Aluminum oxide 40nm (2000mg/kg bw) in comparison to control at 18 and 24h. Further, since there is need for information on the toxicokinetics of nanomaterials, determination of these properties of the nanomaterials was carried out in different tissues, urine and feces using inductively coupled plasma mass spectrometry (ICP–MS). A significant size dependent accumulation of Aluminum oxide nanomaterials occurred in different tissues, urine and feces of rats as shown by ICP–MS data. The results of our study suggest that exposure to Aluminum oxide nanomaterials has the potential to cause genetic damage. [Copyright &y& Elsevier] AB - Copyright of Mutation Research/Genetic Toxicology & Environmental Mutagenesis is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Genetic toxicology KW - Aluminum oxide KW - Nanostructured materials KW - Metals in medicine KW - Rats as laboratory animals KW - Bone marrow KW - Chromosomes KW - Administration of drugs KW - Dosage of drugs KW - Chromosomal aberrations assay KW - Genotoxicity KW - Micronucleus test KW - Nanomaterials KW - Rat N1 - Accession Number: 40637094; Balasubramanyam, A. 1; Sailaja, N. 1; Mahboob, M. 1; Rahman, M.F. 1; Misra, S. 1; Hussain, Saber M. 2; Grover, Paramjit 1; Email Address: grover@iict.res.in; Affiliations: 1: Toxicology Unit, Biology Division, Indian Institute of Chemical Technology, Hyderabad 500 607, Andhra Pradesh, India; 2: Applied Biotechnology, Air Force Research Laboratory/HEPB, Wright-Patterson, AFB, OH, USA; Issue Info: May2009, Vol. 676 Issue 1/2, p41; Thesaurus Term: Genetic toxicology; Subject Term: Aluminum oxide; Subject Term: Nanostructured materials; Subject Term: Metals in medicine; Subject Term: Rats as laboratory animals; Subject Term: Bone marrow; Subject Term: Chromosomes; Subject Term: Administration of drugs; Subject Term: Dosage of drugs; Author-Supplied Keyword: Chromosomal aberrations assay; Author-Supplied Keyword: Genotoxicity; Author-Supplied Keyword: Micronucleus test; Author-Supplied Keyword: Nanomaterials; Author-Supplied Keyword: Rat; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.mrgentox.2009.03.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=40637094&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Spicer, Chester W. AU - Holdren, Michael W. AU - Cowen, Kenneth A. AU - Joseph, Darrell W. AU - Satola, Jan AU - Goodwin, Bradley AU - Mayfield, Howard AU - Laskin, Alexander AU - Lizabeth Alexander, M. AU - Ortega, John V. AU - Newburn, Matthew AU - Kagann, Robert AU - Hashmonay, Ram T1 - Rapid measurement of emissions from military aircraft turbine engines by downstream extractive sampling of aircraft on the ground: Results for C-130 and F-15 aircraft JO - Atmospheric Environment JF - Atmospheric Environment Y1 - 2009/05/21/ VL - 43 IS - 16 M3 - Article SP - 2612 EP - 2622 SN - 13522310 AB - Aircraft emissions affect air quality on scales from local to global. More than 20% of the jet fuel used in the U.S. is consumed by military aircraft, and emissions from this source are facing increasingly stringent environmental regulations, so improved methods for quickly and accurately determining emissions from existing and new engines are needed. This paper reports results of a study to advance the methods used for detailed characterization of military aircraft emissions, and provides emission factors for two aircraft: the F-15 fighter and the C-130 cargo plane. The measurements involved outdoor ground-level sampling downstream behind operational military aircraft. This permits rapid change-out of the aircraft so that engines can be tested quickly on operational aircraft. Measurements were made at throttle settings from idle to afterburner using a simple extractive probe in the dilute exhaust. Emission factors determined using this approach agree very well with those from the traditional method of extractive sampling at the exhaust exit. Emission factors are reported for CO2, CO, NO, NO x , and more than 60 hazardous and/or reactive organic gases. Particle size, mass and composition also were measured and are being reported separately. Comparison of the emissions of nine hazardous air pollutants from these two engines with emissions from nine other aircraft engines is discussed. [Copyright &y& Elsevier] AB - Copyright of Atmospheric Environment is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Emissions (Air pollution) KW - Air pollution -- Measurement KW - Air pollution monitoring KW - Carbon dioxide -- Environmental aspects KW - Aircraft gas turbines KW - Hercules (Turboprop transports) KW - Black Widow (Night fighter plane) KW - Carbon monoxide -- Environmental aspects KW - Nitric oxide -- Environmental aspects KW - Afterburner emissions KW - Emission factor KW - Emission index KW - Hazardous air pollutants KW - Jet engine emissions KW - Military aircraft KW - Turbine engine N1 - Accession Number: 37824185; Spicer, Chester W. 1; Email Address: spiceair@columbus.rr.com; Holdren, Michael W. 2; Cowen, Kenneth A. 3; Joseph, Darrell W. 3; Satola, Jan 3; Goodwin, Bradley 3; Mayfield, Howard 4; Laskin, Alexander 5; Lizabeth Alexander, M. 5; Ortega, John V. 6; Newburn, Matthew 5; Kagann, Robert 7; Hashmonay, Ram 7; Affiliations: 1: SpiceAir Consulting, 2703 Mt. Holyoke Rd., Columbus, OH 43221, USA; 2: Scientific Consulting, 4781 Teter Ct., Columbus, OH 4320, USA; 3: Battelle, 505 King Ave., Columbus, OH 43201, USA; 4: Air Force Research Laboratory, 139 Barnes Dr., Tyndall AFB, FL 32403, USA; 5: Environmental Molecular Science Laboratory, Pacific Northwest National Laboratory, 902 Battelle Blvd., Richland, WA 99352, USA; 6: University of Colorado, Boulder, CO 80309, USA; 7: Arcadis G&M, Durham, NC 27713, USA; Issue Info: May2009, Vol. 43 Issue 16, p2612; Thesaurus Term: Emissions (Air pollution); Thesaurus Term: Air pollution -- Measurement; Thesaurus Term: Air pollution monitoring; Thesaurus Term: Carbon dioxide -- Environmental aspects; Subject Term: Aircraft gas turbines; Subject Term: Hercules (Turboprop transports); Subject Term: Black Widow (Night fighter plane); Subject Term: Carbon monoxide -- Environmental aspects; Subject Term: Nitric oxide -- Environmental aspects; Author-Supplied Keyword: Afterburner emissions; Author-Supplied Keyword: Emission factor; Author-Supplied Keyword: Emission index; Author-Supplied Keyword: Hazardous air pollutants; Author-Supplied Keyword: Jet engine emissions; Author-Supplied Keyword: Military aircraft; Author-Supplied Keyword: Turbine engine; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.atmosenv.2009.02.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=37824185&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Usechak, Nicholas G. AU - Hostetler, John L. T1 - Single-Shot, High-Speed, Thermal-Interface Characterization of Semiconductor Laser Arrays. JO - IEEE Journal of Quantum Electronics JF - IEEE Journal of Quantum Electronics J1 - IEEE Journal of Quantum Electronics PY - 2009/05// Y1 - 2009/05// VL - 45 IS - 5 M3 - Article SP - 531 EP - 541 SN - 00189197 AB - Through a detailed characterization of' thermally induced output power degradation it is possible to use junction heating as a tool to resolve thermal interfaces on μs timescales using a single-shot characterization technique. In this work, the deleterious effect junction heating has on the optical output power of a laser array is characterized and then used to infer the time-dependent junction temperature in response to current pulses of varying widths. The extracted parameters are also used numerically to model the laser as a temperature-dependent heat source for thermal simulations. This treatment allows realistic packaging and emitter-placement studies to be parametrically performed by incorporating the relationship between temperature and output power/efficiency for each emitter. In this respect, once the temperature behavior of a single emitter is quantified, the operating temperature and output power performance can be accurately predicted for any realistic physical arrangement of laser array and packaging. The experimental method presented in this work is also compared to other techniques and numerical simulations using the nonlinear heat source; this demonstrates the utility of this approach and the convenience of using easily measured parameters in thermal simulations. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Journal of Quantum Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR lasers KW - THERMAL insulation KW - INTERFACES (Physical sciences) KW - LASERS KW - COMPUTER simulation KW - SEMICONDUCTORS N1 - Accession Number: 41139900; Source Information: May2009, Vol. 45 Issue 5, p531; Subject Term: SEMICONDUCTOR lasers; Subject Term: THERMAL insulation; Subject Term: INTERFACES (Physical sciences); Subject Term: LASERS; Subject Term: COMPUTER simulation; Subject Term: SEMICONDUCTORS; Subject Term: ; Number of Pages: 11p; ; Illustrations: 2 Black and White Photographs, 1 Diagram, 1 Chart, 12 Graphs; ; Document Type: Article; L3 - 10.1109/JQE.2009.2013097 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=41139900&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Snyder, Matthew P. AU - Sanders, Brian AU - Eastep, Franklin E. AU - Frank, Geoffrey J. T1 - Vibration and Flutter Characteristics of a Folding Wing. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2009/05//May/Jun2009 Y1 - 2009/05//May/Jun2009 VL - 46 IS - 3 M3 - Article SP - 791 EP - 799 SN - 00218669 AB - Studies are presented that characterize the dynamic aeroelastic aspects of a morphing aircraft design concept. The notion of interest is a folding wing design resulting in large-scale wing area changes. A finite element approach is used to investigate the sensitivity of natural frequencies and flutter instabilities to the Wing position (e.g., fold angle), actuator stiffness, and vehicle weight. Sensitivities in these areas drive design requirements and raise flight envelope awareness issues. The study is presented in two parts as a comparison between two models of varying complexity. A simple folding wing model, based on the Goland wing, is analyzed and results are compared with a built-up structural model of the proposed full scale morphing vehicle. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - FINITE element method KW - ACTUATORS KW - MORPHING (Computer animation) KW - FLUTTER (Aerodynamics) KW - AERODYNAMICS KW - STRUCTURAL frames -- Models N1 - Accession Number: 43251719; Source Information: May/Jun2009, Vol. 46 Issue 3, p791; Subject Term: AEROELASTICITY; Subject Term: FINITE element method; Subject Term: ACTUATORS; Subject Term: MORPHING (Computer animation); Subject Term: FLUTTER (Aerodynamics); Subject Term: AERODYNAMICS; Subject Term: STRUCTURAL frames -- Models; Subject Term: ; Number of Pages: 9p; ; Illustrations: 9 Diagrams, 1 Chart, 13 Graphs; ; Document Type: Article; L3 - 10.2514/1.34685 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=43251719&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kim, Y. I. AU - Park, G. J. AU - Kolonay, R. M. AU - Blair, M. AU - Canfield, R. A. T1 - Nonlinear Dynamic Response Structural Optimization of a Joined-Wing Using Equivalent Static Loads. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2009/05//May/Jun2009 Y1 - 2009/05//May/Jun2009 VL - 46 IS - 3 M3 - Article SP - 821 EP - 831 SN - 00218669 AB - The joined-wing configuration that was published by Wolkovich in 1986 has been studied by many researchers (Wolkovich, J., "The Joined-Wing: An Overview," Journal of Aircraft, Vol. 23, No. 3, 1986, pp. 161-178. doi: 10.2514/3.45285). The joined-wing airplane is defined as an airplane that incorporates tandem wings arranged to form diamond shapes from both the top and front views. The joined wing can lead to increased aerodynamic performances as well as a reduction in the structural weight. However, the joined wing has high geometric nonlinearity under the gust load. The gust load acts as a dynamic load. Therefore, nonlinear dynamic (transient) behavior of the joined wing should be considered in structural optimization. In previous research, linear dynamic response optimization and nonlinear static response optimization were performed. It is well known that conventional nonlinear dynamic response optimization is extremely expensive. Therefore, in this research, nonlinear dynamic response optimization of a joined wing is carried out by using equivalent static loads. The concept of equivalent static loads is expanded and newly proposed for nonlinear dynamic response optimization. Equivalent static loads are the load sets that generate the same response field in linear static analysis as that in nonlinear dynamic analysis. Therefore, nonlinear dynamic response optimization can be conducted by repeated use of linear response optimization. For the verification of efficiency of the proposed method, a simple nonlinear dynamic response optimization problem is introduced. The problem is solved by using both the equivalent static loads method and the conventional method with sensitivity analysis using the finite difference method. The procedure for nonlinear dynamic response optimization of a joined wing using equivalent static loads is explained, and the optimum results are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - GUST loads KW - AERODYNAMIC load KW - DYNAMIC loads (Mechanics) KW - STRUCTURAL optimization KW - DEAD loads (Mechanics) KW - FINITE differences N1 - Accession Number: 43251722; Source Information: May/Jun2009, Vol. 46 Issue 3, p821; Subject Term: AIRPLANE wings; Subject Term: GUST loads; Subject Term: AERODYNAMIC load; Subject Term: DYNAMIC loads (Mechanics); Subject Term: STRUCTURAL optimization; Subject Term: DEAD loads (Mechanics); Subject Term: FINITE differences; Subject Term: ; Number of Pages: 11p; ; Illustrations: 11 Diagrams, 5 Charts, 8 Graphs; ; Document Type: Article; L3 - 10.2514/1.36762 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=43251722&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR T1 - Optimizing Football Game Play Calling. AU - Jeremy Jordan AU - Sharif Melouk AU - Marcus Perry JO - Journal of Quantitative Analysis in Sports JF - Journal of Quantitative Analysis in Sports Y1 - 2009/05// VL - 5 IS - 2 SP - 1176 EP - 1176 SN - 21946388 N1 - Accession Number: 44026674; Author: Jeremy Jordan: 1 Author: Sharif Melouk: 2 Author: Marcus Perry: 2 ; Author Affiliation: 1 Air Force Research Laboratory: 2 The University of Alabama; No. of Pages: 1; Language: English; Publication Type: Article; Update Code: 20091009 N2 - Play calling strategies during football games are extremely important to the success of a team. In the past, coaches and players have subjectively determined the plays to call based on past experiences, personal biases, and various observable factors. This research quantifies these decisions using game theoretic techniques; updating optimal decision policies as new information becomes available during a game. A decision maker changes his perceived optimal strategy based on the information known about the opponent's strategy at the time of the decision. Additionally, utility theory is used to capture the different risk preferences of the decision makers. Furthermore, we use design of experiments and response surface methodology to optimize the risk strategies of each decision maker. By exploring the interaction of two football teams' risk preferences, optimal risk strategies can be suggested in the form of a varying mixed strategy. The techniques presented can be utilized in a precursory analysis to forecast different decisions a coach or player may encounter throughout the game, during a game to optimize each play called, or as a posterior analysis technique to dissect the decisions made and determine the effectiveness of the plays called. The procedures are easily transitioned to rapidly assist football teams or other sports teams in making better decisions through quantitative modeling and statistical analysis. A numerical example is presented to demonstrate the usefulness of the solution approach. ABSTRACT FROM AUTHOR KW - *FOOTBALL teams KW - *SOCCER techniques KW - *DECISION making KW - *FOOTBALL -- Training KW - *STATISTICAL analysis in sports KW - *FOOTBALL players KW - MATHEMATICAL optimization UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=44026674&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Cowen, Kenneth AU - Goodwin, Bradley AU - Joseph, Darrell AU - Tefend, Matthew AU - Satola, Jan AU - Kagann, Robert AU - Hashmonay, Ram AU - Spicer, Chester AU - Holdren, Michael AU - Mayfield, Howard T1 - Extractive Sampling and Optical Remote Sensing of F100 Aircraft Engine Emissions. JO - Journal of the Air & Waste Management Association (Air & Waste Management Association) JF - Journal of the Air & Waste Management Association (Air & Waste Management Association) Y1 - 2009/05// VL - 59 IS - 5 M3 - Article SP - 531 EP - 539 PB - Air & Waste Management Association SN - 10962247 AB - The Strategic Environmental Research and Development Program (SERDP) has initiated several programs to develop and evaluate techniques to characterize emissions from military aircraft to meet increasingly stringent regulatory requirements. This paper describes the results of a recent field study using extractive and optical remote sensing (ORS) techniques to measure emissions from six F-15 fighter aircraft. Testing was performed between November 14 and 16, 2006 on the trim-pad facility at Tyndall Air Force Base in Panama City, FL. Measurements were made on eight different F100 engines, and the engines were tested on-wing of in-use aircraft. A total of 39 test runs were performed at engine power levels that ranged from idle to military power. The approach adopted for these tests involved extractive sampling with collocated ORS measurements at a distance of approximately 20-25 nozzle diameters downstream of the engine exit plane. The emission indices calculated for carbon dioxide, carbon monoxide, nitric oxide, and several volatile organic compounds showed very good agreement when comparing the extractive and ORS sampling methods. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Air & Waste Management Association (Air & Waste Management Association) is the property of Air & Waste Management Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Remote sensing KW - Environmental research KW - Field work (Research) KW - Airplanes -- Motors KW - Sampling (Statistics) KW - Aerodynamics KW - Panama City (Fla.) KW - Florida N1 - Accession Number: 39231282; Cowen, Kenneth 1; Email Address: cowenk@battelle.org; Goodwin, Bradley 1; Joseph, Darrell 1; Tefend, Matthew 1; Satola, Jan 1; Kagann, Robert 2; Hashmonay, Ram 2; Spicer, Chester 3; Holdren, Michael 4; Mayfield, Howard 5; Affiliations: 1: Battelle, Columbus, OH; 2: ARCADIS G&M, Durham, NC; 3: SpiceAir Consulting, Columbus, OH; 4: Scientific Consulting, Columbus, OH; 5: Air Force Research Laboratory, Tyndall Air Force Base, Panama City, FL; Issue Info: May2009, Vol. 59 Issue 5, p531; Thesaurus Term: Remote sensing; Thesaurus Term: Environmental research; Thesaurus Term: Field work (Research); Subject Term: Airplanes -- Motors; Subject Term: Sampling (Statistics); Subject Term: Aerodynamics; Subject: Panama City (Fla.); Subject: Florida; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 541910 Marketing Research and Public Opinion Polling; Number of Pages: 9p; Illustrations: 2 Diagrams, 5 Charts, 5 Graphs; Document Type: Article L3 - 10.3155/1047-3289.59.5.531 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=39231282&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2009-06182-008 AN - 2009-06182-008 AU - Funke, Gregory J. AU - Galster, Scott M. T1 - The effects of cognitive processing load and collaboration technology on team performance in a simulated command and control environment. JF - International Journal of Industrial Ergonomics JO - International Journal of Industrial Ergonomics JA - Int J Ind Ergon Y1 - 2009/05// VL - 39 IS - 3 SP - 541 EP - 547 CY - Netherlands PB - Elsevier Science SN - 0169-8141 AD - Funke, Gregory J., Consortium Research Fellows Program, 2255 H Street, Wright-Patterson AFB, Dayton, OH, US, 45433 N1 - Accession Number: 2009-06182-008. Partial author list: First Author & Affiliation: Funke, Gregory J.; Consortium Research Fellows Program, Arlington, VA, US. Release Date: 20100111. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Collaboration; Computer Assisted Instruction; Group Performance; Human Channel Capacity; Technology. Minor Descriptor: Cognitive Processes; Simulation; Teams. Classification: Human Factors Engineering (4010). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 7. Issue Publication Date: May, 2009. Publication History: First Posted Date: Dec 6, 2008; Accepted Date: Oct 15, 2008; Revised Date: Aug 20, 2008; First Submitted Date: Dec 26, 2007. Copyright Statement: All rights reserved. Elsevier B.V. 2008. AB - Research addressing the effects of collaboration tools indicates that team task is an important moderator of task performance. However, little research has been conducted utilizing execution tasks [McGrath, J.E., 1984. Groups: Interaction and Performance. Prentice-Hall, Englewood Cliffs, NJ], even though such tasks represent a substantial portion of real-world teams’ experiences. The current study addressed the effects of cognitive processing load and text-based collaborative tools on team performance in a simulated execution task. Thirty-two people served as paid participants in this study. Teams of two participants competed against a computer opponent in a RoboFlag simulation based on ‘capture-the-flag.’ As a manipulation of cognitive processing load, participants either could or could not see their teammates’ simulated vehicles during a trial. In addition, participants were restricted to no communication, oral communication, text-based communication, or oral and text communication combined. Results indicated that cognitive processing load substantially impacted team performance and participants’ subjective ratings of workload and situational awareness. Team communication conditions influenced workload, situational awareness, and team communications, but did not affect team performance. Overall, the results of the current experiment support previous research indicating that text-based communication may be as effective as oral communication during an execution task, and that factors such as shared task specific knowledge may exert a greater influence on team performance than communication modality. Relevance to industry: The results obtained in this experiment help to further characterize the factors that affect performance in distributed collaborative environments, and may provide useful information to military organizations concerning the development of tactical displays and communication tools for command and control. More broadly, these results indicate that organizations engaged in distributed execution tasks do not need to be overly worried about the effects of text-based collaborative tools, such as instant messaging, on team performance. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cognitive processing load KW - collaboration technology KW - team performance KW - simulated command and control environment KW - 2009 KW - Collaboration KW - Computer Assisted Instruction KW - Group Performance KW - Human Channel Capacity KW - Technology KW - Cognitive Processes KW - Simulation KW - Teams KW - 2009 U1 - Sponsor: Army Research Laboratory. Grant: GWSE047201202. Recipients: No recipient indicated DO - 10.1016/j.ergon.2008.10.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-06182-008&site=ehost-live&scope=site UR - gregory.funke@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - LeardMann, Cynthia A. AU - Smith, Tyler C. AU - Smith, Besa AU - Wells, Timothy S. AU - Ryan, Margaret A.K. T1 - Baseline self reported functional health and vulnerability to post-traumatic stress disorder after combat deployment: prospective US military cohort study. JO - BMJ: British Medical Journal (Overseas & Retired Doctors Edition) JF - BMJ: British Medical Journal (Overseas & Retired Doctors Edition) Y1 - 2009/04/25/ VL - 338 IS - 7701 M3 - Article SP - 992 EP - 995 SN - 17592151 AB - Objective To determine if baseline functional health status, as measured by SF-36 (veterans), predicts new onset symptoms or diagnosis of post-traumatic stress disorder among deployed US military personnel with combat exposure. Design Prospective cohort analysis. Setting Millennium Cohort. I Participants Combat deployed members who completed baseline (2001-3) and follow-up (2004-6) elect questionnaires. Self reported and electronic data used to examine the relation between functional health and post- traumatic stress disorder. Main outcome measures New onset post-traumatic stress disorder as measured by either meeting the DSM-IV criteria with the 17 item post-traumatic stress disorder checklist-civilian version or self report of a physician diagnosis at follow-up with the absence of both at baseline. Results Of the 5410 eligible participants, 395 (7.3%) had new onset symptoms or diagnosis of post-traumatic stress disorder at the time of follow-up. Individuals whose baseline mental or physical component summary scores were below the 15th centile had two to three times the risk of symptoms or a diagnosis of post-traumatic stress disorder by follow-up compared with those in the 15th to 85th centile. Of those with new onset symptoms or diagnosis of post-traumatic stress disorder, over half (58%) of cases occurred among participants with scores below the 15th centile at baseline. Conclusions Low mental or physical health status before combat exposure significantly increases the risk of symptoms or diagnosis of post-traumatic stress disorder after deployment. More vulnerable members of a population could be identified and benefit from interventions targeted to prevent new onset post- traumatic stress disorder. [ABSTRACT FROM AUTHOR] AB - Copyright of BMJ: British Medical Journal (Overseas & Retired Doctors Edition) is the property of BMJ Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POST-traumatic stress disorder KW - OUTCOME assessment (Medical care) KW - MILITARY personnel -- Health KW - HEALTH risk assessment KW - VETERANS -- Psychology KW - PATHOLOGICAL psychology -- Risk factors KW - STRESS (Psychology) KW - COMBAT -- Psychological aspects N1 - Accession Number: 39141984; LeardMann, Cynthia A. 1; Email Address: Cynthia.LeardMann@med.navy.mil; Smith, Tyler C. 1; Smith, Besa 1; Wells, Timothy S. 2; Ryan, Margaret A.K. 3; Source Information: 4/25/2009, Vol. 338 Issue 7701, p992; Subject: POST-traumatic stress disorder; Subject: OUTCOME assessment (Medical care); Subject: MILITARY personnel -- Health; Subject: HEALTH risk assessment; Subject: VETERANS -- Psychology; Subject: PATHOLOGICAL psychology -- Risk factors; Subject: STRESS (Psychology); Subject: COMBAT -- Psychological aspects; Number of Pages: 4p; Illustrations: 1 Chart; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=39141984&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 105368198 T1 - Effects of simulated altitude on ventilator performance. AU - Rodriquez D Jr AU - Branson RD AU - Dorlac W AU - Dorlac G AU - Barnes SA AU - Johannigman JA Y1 - 2009/04/02/2009 Supplement N1 - Accession Number: 105368198. Language: English. Entry Date: 20090724. Revision Date: 20150711. Publication Type: Journal Article; research. Supplement Title: 2009 Supplement. Journal Subset: Biomedical; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Critical Care; Emergency Care. NLM UID: 0376373. KW - Altitude KW - Ambulances KW - Ventilators, Mechanical KW - Equipment Failure KW - Positive End-Expiratory Pressure KW - Tidal Volume -- Physiology KW - Human SP - S172 EP - 7 JO - Journal of Trauma JF - Journal of Trauma JA - J TRAUMA CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - BACKGROUND: Aeromedical transport of critically ill casualties requires continued safe operation of medical equipment at altitude. We evaluated performance of two ventilators in an altitude chamber. METHODS: Two ventilators used by the United States Air Force (USAF) Critical Care Air Transport Teams were operated in an altitude chamber at barometric pressure of 754 mm Hg, 657 mm Hg, 563 mm Hg, and 428 mm Hg simulating altitudes of sea level, 4,000, 8,000, and 15,000 feet. At each altitude ventilators were set to deliver three tidal volumes (VT) from 0.25 L to 1.0 L. Airway pressure, timing, flow, and volumes were measured every breath. Measured parameters included VT, positive end-expiratory pressure (PEEP), inspiratory time, expiratory time, inspiratory flow, peak inspiratory pressure, expiratory flow, and respiratory rate. RESULTS: The Impact 754 compensated for changes in altitude maintaining the set VT within 10% of the sea level VT. Tidal volume delivery of the 754 was less precise during operation of the compressor at an inspired oxygen concentration of 0.21. With each increase in altitude, the LTV VT increased. At 8,000 feet VT increased by 10% and at 15,000 feet VT increased by 30% (p<0.001). Respiratory rate was not affected by altitude with either device. CONCLUSIONS: The Impact 754 compensates ventilator output to deliver the desired tidal volume regardless of changes in altitude and barometric pressure. The LTV-1000 does not compensate for changes in altitude resulting in delivery of increasing tidal volumes with falling barometric pressure. Clinicians should be aware of ventilator performance and ventilator limitations to provide safe and effective ventilation during transport. SN - 0022-5282 AD - Center for Sustainment of Trauma and Readiness Skills, United States Air Force, Cincinnati, Ohio, USA. U2 - PMID: 19359962. DO - 10.1097/TA.0b013e31819cdbd1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105368198&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 105399145 T1 - Using computational cognitive modeling to predict dual-task performance with sleep deprivation. AU - Gunzelmann G AU - Byrne MD AU - Gluck KA AU - Moore LR Jr AU - Gunzelmann, Glenn AU - Byrne, Michael D AU - Gluck, Kevin A AU - Moore, L Richard Jr Y1 - 2009/04// N1 - Accession Number: 105399145. Language: English. Entry Date: 20090925. Revision Date: 20170228. Publication Type: journal article; research. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. NLM UID: 0374660. KW - Sleep Deprivation -- Physiopathology KW - Task Performance and Analysis KW - Arousal -- Physiology KW - Cognition Disorders -- Physiopathology KW - Cognition KW - Fatigue -- Physiopathology KW - Models, Biological KW - Wakefulness KW - Human SP - 251 EP - 260 JO - Human Factors JF - Human Factors JA - HUM FACTORS VL - 51 IS - 2 PB - Sage Publications Inc. AB - Objective: The effects of fatigue on multiple-task performance were explored through computational cognitive modeling.Background: Fatigue typically has a negative impact on human performance. Biomathematical models exist that characterize the dynamics of human alertness, but the link between alertness and in situ performance on specific tasks is tenuous. Cognitive architectures offer a principled means of establishing that link.Method: We implemented mechanisms for fatigue, which produce microlapses in cognitive processing, into an existing model, adaptive control of thought-rational, and validated the performance predictions with Bratzke, Rolke, Ulrich, and Peters' data on fatigue and multiple-task performance.Results: The microlapse model replicated the human performance results very well with zero free parameters, although the fit was improved when we allowed two individual differences parameters to vary.Conclusion: Increased frequency of microlapses as a result of fatigue provides a parsimonious explanation for the impact of fatigue on dual-task performance and is consistent with previous research.Application: Our results illustrate how using biomathematical models of fatigue in conjunction with a cognitive architecture can result in accurate predictions of the effects of fatigue on dual-task performance. Extending and generalizing this capability has potential utility in any safety-critical domain in which fatigue may affect performance. SN - 0018-7208 AD - Air Force Research Laboratory, 711 HPW/RHAC, 6030 S. Kent St., Mesa, AZ 85212-6061, USA AD - Air Force Research Laboratory, 711 HPW/RHAC, 6030 S. Kent St., Mesa, AZ 85212-6061, USA. glenn.gunzelmann@us.af.mil U2 - PMID: 19653487. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105399145&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Deming, Ross AU - Schindler, John AU - Perlovsky, Leonid T1 - Multi-Target/Multi-Sensor Tracking using Only Range and Doppler Measurements. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2009/04// VL - 45 IS - 2 M3 - Article SP - 593 EP - 611 SN - 00189251 AB - A new approach is described for combining range and Doppler data from multiple radar platforms to perform multi-target detection and tracking. In particular, azimuthal measurements are assumed to be either coarse or unavailable, so that multiple sensors are required to triangulate target tracks using range and Doppler measurements only. Increasing the number of sensors can cause data association by conventional means to become impractical due to combinatorial complexity, i.e., an exponential increase in the number of mappings between signatures and target models. When the azimuthal resolution is coarse, this problem will be exacerbated by the resulting overlap between signatures from multiple targets and clutter. In the new approach, the data association is performed probabilistically, using a variation of expectation-maximization (EM). Combinatorial complexity is avoided by performing an efficient optimization in the space of all target tracks and mappings between tracks and data. The full, multi-sensor, version of the algorithm is tested on simulated data. The results demonstrate that accurate tracks can be estimated by exploiting spatial diversity in the sensor locations. Also, as a proof-of-concept, a simplified, single-sensor range-only version of the algorithm is tested on experimental radar data acquired with a stretch radar receiver. These results are promising, and demonstrate robustness in the presence of nonhomogeneous clutter. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC pulse techniques KW - REMOTE sensing KW - ELECTRONIC systems KW - DOPPLER navigation KW - DOPPLER effect N1 - Accession Number: 43465074; Deming, Ross 1; Email Address: ross.deming@hanscom.af.mil; Schindler, John 1; Email Address: jkschindler@verizon.net; Perlovsky, Leonid 2; Email Address: leonid.perlovsky@hanscom.af.mil; Affiliations: 1: General Dynamics Information Technology, Inc.; 2: Air Force Research Laboratory, Sensors Directorate/RYHE, 80 Scott Drive, Hanscom, AFB, MA 01731; Issue Info: Apr2009, Vol. 45 Issue 2, p593; Subject Term: ELECTRONIC pulse techniques; Subject Term: REMOTE sensing; Subject Term: ELECTRONIC systems; Subject Term: DOPPLER navigation; Subject Term: DOPPLER effect; Number of Pages: 19p; Illustrations: 3 Black and White Photographs, 10 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=43465074&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Seok Joo Doo AU - Roblin, Patrick AU - Balasubramanian, Venkatesh AU - Taylor, Richard AU - Dandu, Krishnanshu AU - Strahler, Jeffrey AU - Jessen, Gregg H. AU - Teyssier, Jean-Pierre T1 - Pulsed Active Load-Pull Measurements for the Design of High-Efficiency Class-B RF Power Amplifiers With GaN HEMTs. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques Y1 - 2009/04//Apr2009 Part 1 of 2 VL - 57 IS - 4 M3 - Article SP - 881 EP - 889 SN - 00189480 AB - A novel pulsed class-B load-pull measurement system is developed to characterize GaN HEMTs targeting the design of high-efficiency class-B or class-C power amplifiers operating under a pulsed-bias and pulsed-RF (pulsed-I V/RF) condition. Based on a large-signal network analyzer, the test system uses an active load-pull method to provide stable open-loop pulsed-RF loads into the drain at ωo and 2ωo while bypassing slow-memory effects. The load-pull measurement data obtained from AIGaN/GaN HEMTs under the class-B operation reveal that there exist optimal loads for pulsed-IV/RF condition, which differ from the ones found for a dc-IV and continuous wave condition. This is due to the avoidance of slow-memory effects in the pulsed-lV/RF load-pull measurements, which are known to degrade the device RF performance: a 2-dB increase in output power is obtained for a GaN HEMT on sapphire. The optimized pulsed-RF active load for a GaN HEMT on SiC demonstrates a power-added efficiency of 82% with 17.8-dBm output power under quasi class-B pulsed operation at 2 GHz. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POWER amplifiers KW - PULSE frequency modulation KW - ELECTRIC network analyzers KW - LOAD (Electric power) KW - ELECTRIC power systems KW - Class B KW - GaN HEMTs KW - large-signal network annlyzer (LSNA) KW - load-pull KW - memory effects KW - pulsed-IV KW - pulsed-RF N1 - Accession Number: 39060577; Seok Joo Doo 1; Roblin, Patrick 2; Email Address: roblin@ece.osu.edu; Balasubramanian, Venkatesh 3; Taylor, Richard 3; Dandu, Krishnanshu 3; Strahler, Jeffrey 4; Jessen, Gregg H. 5; Teyssier, Jean-Pierre 6; Affiliations: 1: Department of Electronic Engineering, Korea Army Academy at Young-Cheon, Young-Cheon 770-849, Korea; 2: Department of Electrical and Computer Engineering, The Ohio State University, Columbus, OH 43210 USA; 3: Texas Instruments Incorporated, Sunnyvale, CA 94089 USA; 4: Andrew Corporation, Westerville, OH 43082 USA; 5: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH 45433 USA; 6: XLIM Institute of Research, Limoges 87060, France; Issue Info: Apr2009 Part 1 of 2, Vol. 57 Issue 4, p881; Subject Term: POWER amplifiers; Subject Term: PULSE frequency modulation; Subject Term: ELECTRIC network analyzers; Subject Term: LOAD (Electric power); Subject Term: ELECTRIC power systems; Author-Supplied Keyword: Class B; Author-Supplied Keyword: GaN HEMTs; Author-Supplied Keyword: large-signal network annlyzer (LSNA); Author-Supplied Keyword: load-pull; Author-Supplied Keyword: memory effects; Author-Supplied Keyword: pulsed-IV; Author-Supplied Keyword: pulsed-RF; Number of Pages: 9p; Illustrations: 4 Charts, 6 Graphs; Document Type: Article L3 - 10.1109/TMTT.2009.2015111 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=39060577&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 2009-10668-011 AN - 2009-10668-011 AU - Gunzelmann, Glenn AU - Byrne, Michael D. AU - Gluck, Kevin A. AU - Moore, L. Richard Jr. T1 - Using computational cognitive modeling to predict dual-task performance with sleep deprivation. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2009/04// VL - 51 IS - 2 SP - 251 EP - 260 CY - US PB - Sage Publications SN - 0018-7208 SN - 1547-8181 AD - Gunzelmann, Glenn, Air Force Research Laboratory, 711 HPW/RHAC, 6030 S. Kent St., Mesa, AZ, US, 85212-6061 N1 - Accession Number: 2009-10668-011. PMID: 19653487 Partial author list: First Author & Affiliation: Gunzelmann, Glenn; Air Force Research Laboratory, Mesa, AZ, US. Other Publishers: Human Factors & Ergonomics Society. Release Date: 20090914. Correction Date: 20120618. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Fatigue; Sleep Deprivation; Task Complexity; Computational Modeling. Classification: Engineering & Environmental Psychology (4000). Population: Human (10). Methodology: Empirical Study; Mathematical Model; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Apr, 2009. Publication History: Accepted Date: Feb 11, 2009; First Submitted Date: Mar 14, 2008. Copyright Statement: Human Factors and Ergonomics Society. 2009. AB - Objective: The effects of fatigue on multiple-task performance were explored through computational cognitive modeling. Background: Fatigue typically has a negative impact on human performance. Biomathematical models exist that characterize the dynamics of human alertness, but the link between alertness and in situ performance on specific tasks is tenuous. Cognitive architectures offer a principled means of establishing that link. Method: We implemented mechanisms for fatigue, which produce microlapses in cognitive processing, into an existing model, adaptive control of thought–rational, and validated the performance predictions with Bratzke, Rolke, Ulrich, and Peters’ data on fatigue and multiple-task performance. Results: The microlapse model replicated the human performance results very well with zero free parameters, although the fit was improved when we allowed two individual differences parameters to vary. Conclusion: Increased frequency of microlapses as a result of fatigue provides a parsimonious explanation for the impact of fatigue on dual-task performance and is consistent with previous research. Application: Our results illustrate how using biomathematical models of fatigue in conjunction with a cognitive architecture can result in accurate predictions of the effects of fatigue on dual-task performance. Extending and generalizing this capability has potential utility in any safety-critical domain in which fatigue may affect performance. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - fatigue KW - multiple-task performance KW - computational cognitive modeling KW - sleep deprivation KW - 2009 KW - Fatigue KW - Sleep Deprivation KW - Task Complexity KW - Computational Modeling KW - 2009 U1 - Sponsor: Air Force Research Laboratory, Warfighter Readiness Research Division. Recipients: No recipient indicated U1 - Sponsor: US Air Force Office of Scientific Research, US. Grant: 07HE01COR. Recipients: No recipient indicated DO - 10.1177/0018720809334592 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-10668-011&site=ehost-live&scope=site UR - glenn.gunzelmann@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Metrangolo, Pierangelo AU - Carcenac, Yvan AU - Lahtinen, Manu AU - Pilati, Tullio AU - Rissanen, Kari AU - Vij, Ashwani AU - Resnati, Giuseppe T1 - Nonporous Organic Solids Capable of Dynamically Resolving Mixtures of Diiodoperfluoroalkanes. JO - Science JF - Science Y1 - 2009/03/13/ VL - 323 IS - 5920 M3 - Article SP - 1461 EP - 1464 SN - 00368075 AB - Halogen bonding has increasingly facilitated the assembly of diverse host-guest solids. Here, we show that a well-known class of organic salts, bis(trimethytammonium) alkane diiodides, can reversibly encapsulate α,ω-diiodoperfluoroalkanes (DIPFAs) through intermolecular interactions between the host's I- anions and the guest's terminal iodine substituents. The process is highly selective for the fluorocarbon that forms an l-…l(CF2)ml…l- superanion that is matched in length to the chosen dication. DIPFAs that are 2 to 12 carbons in length (common industrial intermediates) can thereby be isolated from mixtures by means of crystallization from solution upon addition of the dissolved size-matched ionic salt. The solid-state salts can also selectively capture the DIPFAs from the vapor phase, yielding the same product formed from solution despite a lack of porosity of the starting lattice structure. Heating liberates the DIPFAs and regenerates the original salt lattice, highlighting the practical potential for the system in separation applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Halogen compounds KW - Fluorocarbons KW - Solution (Chemistry) KW - Porosity KW - Organic solid state chemistry KW - Alkanes KW - Ammonium compounds KW - Crystallization N1 - Accession Number: 37292187; Metrangolo, Pierangelo 1; Email Address: pierangelo.metrangolo@polimi.it; Carcenac, Yvan 1; Lahtinen, Manu 2; Pilati, Tullio 3; Rissanen, Kari 4; Vij, Ashwani 5; Resnati, Giuseppe 1,3; Affiliations: 1: Laboratory of Nanostructured Fluorinated Materials, Department of Chemistry, Materials, and Chemical Engineering Giulio Natta, Politecnico di Milano, via L. Mancinelli 7, 20131 Milan, Italy; 2: Department of Chemistry, University of Jyväskyä, Post Office Box 35, Jyväskyä FI-40014, Finland; 3: Istituto di Scienze e Tecnologie Molecolari-Consigiio Nazionale delle Ricerche, University of Milan, 20133 Milan, Italy; 4: Nanoscience Center, Department of Chemistry, University of Jyväslä, Post Office Box 35, Jyväskylä FI-40014, Finland; 5: Air Force Research Laboratory/RZSP, 10 East Saturn Boulevard, Edwards Air Force Base, CA 93524, USA; Issue Info: 3/13/2009, Vol. 323 Issue 5920, p1461; Thesaurus Term: RESEARCH; Thesaurus Term: Halogen compounds; Thesaurus Term: Fluorocarbons; Thesaurus Term: Solution (Chemistry); Thesaurus Term: Porosity; Subject Term: Organic solid state chemistry; Subject Term: Alkanes; Subject Term: Ammonium compounds; Subject Term: Crystallization; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=37292187&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - SHIMEL, BRIAN T1 - Adapting to Decision Support. JO - Armed Forces Comptroller JF - Armed Forces Comptroller J1 - Armed Forces Comptroller PY - 2009///Spring2009 Y1 - 2009///Spring2009 VL - 54 IS - 2 M3 - Article SP - 36 EP - 39 PB - American Society of Military Comptrollers SN - 00042188 AB - The article discusses the perspective of financial management (FM) professionals on the ability of comptrollers at the U.S. Department of Defense (DoD) to provide decision support. It defines decision support as a means of providing decision makers with viable, reliable, and related data to enable them to make timely decisions. Although leadership influences decision support, the article contends that there is still a gap in conveying its true objectives. KW - FINANCIAL management KW - FINANCIAL planning KW - FINANCIAL planners -- United States KW - COMPTROLLERS KW - UNITED States. Dept. of Defense KW - UNITED States N1 - Accession Number: 44511419; Source Information: Spring2009, Vol. 54 Issue 2, p36; Subject Term: FINANCIAL management; Subject Term: FINANCIAL planning; Subject Term: FINANCIAL planners -- United States; Subject Term: COMPTROLLERS; Subject Term: UNITED States. Dept. of Defense; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 4p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=44511419&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Carson, Katherine Silz AU - Chilton, Susan M. AU - Hutchinson, W. George T1 - Necessary conditions for demand revelation in double referenda JO - Journal of Environmental Economics & Management JF - Journal of Environmental Economics & Management Y1 - 2009/03// VL - 57 IS - 2 M3 - Article SP - 219 EP - 225 SN - 00950696 AB - Abstract: This paper demonstrates a set of necessary conditions that should generate unbiased, internally consistent estimates of willingness to pay (WTP) from a double referendum mechanism. These conditions are also sufficient for demand revelation in an experimental laboratory environment. However, the control over the mechanism achieved in the lab may not be transferrable to the field and WTP estimates derived from field surveys may remain biased. [Copyright &y& Elsevier] AB - Copyright of Journal of Environmental Economics & Management is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Consumer behavior KW - Environmental policy KW - Willingness to pay KW - Bayesian analysis KW - Consequential double referendum KW - Contingent valuation KW - Demand revelation N1 - Accession Number: 36681681; Carson, Katherine Silz 1; Email Address: kate.carson@usafa.edu; Chilton, Susan M. 2; Hutchinson, W. George 3; Affiliations: 1: Department of Economics and Geosciences, United States Air Force Academy, 2354 Fairchild Drive, Suite 6K110, USAF Academy, CO 80840-6299, USA; 2: Business School—Economics, Newcastle University, Ridley Building, Queen Victoria Road, Newcastle upon Tyne UI NE1 7RU, UK; 3: Gibson Institute for Land, Food, and the Environment, Queen's University, Stranmillis Road, Belfast BT9 5AG, UK; Issue Info: Mar2009, Vol. 57 Issue 2, p219; Thesaurus Term: Consumer behavior; Thesaurus Term: Environmental policy; Subject Term: Willingness to pay; Subject Term: Bayesian analysis; Author-Supplied Keyword: Consequential double referendum; Author-Supplied Keyword: Contingent valuation; Author-Supplied Keyword: Demand revelation; NAICS/Industry Codes: 912910 Other provincial and territorial public administration; NAICS/Industry Codes: 924110 Administration of Air and Water Resource and Solid Waste Management Programs; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jeem.2008.07.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=36681681&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 105468955 T1 - Post-epidural headache: how late can it occur? AU - Reamy BV Y1 - 2009/03//2009 Mar-Apr N1 - Accession Number: 105468955. Language: English. Entry Date: 20091002. Revision Date: 20150711. Publication Type: Journal Article; case study; research. Journal Subset: Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 101256526. KW - Headache -- Etiology KW - Spinal Puncture -- Adverse Effects KW - Adult KW - Anesthesia, Spinal KW - Blood Patch, Epidural KW - Female KW - Headache -- Physiopathology KW - Headache -- Therapy KW - Postoperative Complications KW - Time Factors KW - Treatment Outcomes KW - Human SP - 202 EP - 205 JO - Journal of the American Board of Family Medicine JF - Journal of the American Board of Family Medicine JA - J AM BOARD FAM MED VL - 22 IS - 2 CY - Lexington, Kentucky PB - American Board of Family Medicine AB - BACKGROUND: Complications of labor epidural anesthesia include a post-dural puncture headache (PDPH). A 2003 meta-analysis described the onset of PDPH as occurring from 1 to 7 days after the procedure. Presented here is the first published case of a PDPH occurring 12 days postpartum. METHODS: Twelve days after an uncomplicated labor epidural a patient was awakened by a 'crushing' postural headache. The initial diagnosis was 'possible subarachnoid hemorrhage.' Lumbar puncture and computed tomography angiogram were normal. Despite medications a severe postural headache persisted and she was referred for an epidural blood patch. Consultants felt the headache onset after 7 days made PDPH impossible. Ultimately a delayed EBP was performed with immediate resolution of her headache. Discussion: Meta-analyses describe that parturients have a 1.5% risk of accidental dural puncture during epidural placement. Onset of the headache occurs as early as 1 or as late as 7 days after the procedure. Epidural blood patch is the most effective treatment for PDPH and a rapid response is diagnostic. CONCLUSION: Described is the first reported case of a PDPH occurring well outside the normal range of onset 1 to 7 days after epidural anesthesia. The delayed diagnosis and treatment of PDPH in this patient illustrates the limitations of over-rigorous application of pooled analyses to the care of individual patients. SN - 1557-2625 AD - the United States Air Force and the Department of Family Medicine, Uniformed Services University, Bethesda, MD. U2 - PMID: 19264945. DO - 10.3122/jabfm.2009.02.080064 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105468955&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2010-02308-002 AN - 2010-02308-002 AU - Gunzelmann, Glenn AU - Gluck, Kevin A. T1 - An integrative approach to understanding and predicting the consequences of fatigue on cognitive performance. JF - Cognitive Technology JO - Cognitive Technology Y1 - 2009///Spr 2009 VL - 14 IS - 1 SP - 14 EP - 25 CY - US PB - Practical Memory Inst SN - 1091-8388 AD - Gunzelmann, Glenn, Air Force Research Laboratory-RHAC, 6030 South Kent Street, Mesa, AZ, US, 85212-6061 N1 - Accession Number: 2010-02308-002. Partial author list: First Author & Affiliation: Gunzelmann, Glenn; Air Force Research Laboratory, Mesa, AZ, US. Release Date: 20101220. Correction Date: 20170216. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Processes; Fatigue; Mathematical Modeling; Sleep; Computational Modeling. Minor Descriptor: Consequence. Classification: Cognitive Processes (2340). Population: Human (10). Tests & Measures: Walter Reed Serial Addition/Subtraction Task; Psychomotor Vigilance Test DOI: 10.1037/t58155-000. Methodology: Empirical Study; Mathematical Model; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: Spr 2009. AB - The deleterious consequences of fatigue have motivated decades of research to understand the impact of inadequate sleep on cognitive performance. A key objective is to use insights from that research to develop predictive models that can serve as valid tools for managing work-rest schedules and making Go, No-Go mission decisions. Ultimately, this is about maximizing human performance and minimizing risk. In this paper, we describe a methodology that is moving us in the direction of achieving this goal, involving the integration of mathematical and computational process modeling approaches to understand how fatigue affects human cognitive processes. Mathematical models that capture the dynamics of the human arousal system are integrated with a cognitive architecture that instantiates a unified theory of the mechanisms of human cognition. The integration of these approaches leads to an enhanced ability to quantify the impact of fatigue on performance in particular tasks. We illustrate this by making principled, a priori predictions regarding how human performance in instrument flight with a Predator UAV synthetic task environment may change across 4 days without sleep. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - fatigue KW - cognitive performance KW - sleep KW - mathematical modeling KW - computational modeling KW - 2009 KW - Cognitive Processes KW - Fatigue KW - Mathematical Modeling KW - Sleep KW - Computational Modeling KW - Consequence KW - 2009 U1 - Sponsor: Warfighter Readiness Research Division. Recipients: No recipient indicated U1 - Sponsor: 711th Human Performance Wing, Human Effectiveness Directorate. Recipients: No recipient indicated U1 - Sponsor: Air Force Office of Scientific Research (AFOSR). Grant: 07HE01COR. Recipients: No recipient indicated UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-02308-002&site=ehost-live&scope=site UR - glenn.gunzelmann@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-05627-003 AN - 2010-05627-003 AU - Bisantz, Ann M. AU - Stone, Richard T. AU - Pfautz, Jonathan AU - Fouse, Adam AU - Farry, Michael AU - Roth, Emilie AU - Nagy, Allen L. AU - Thomas, Gina T1 - Visual representations of meta-information. JF - Journal of Cognitive Engineering and Decision Making JO - Journal of Cognitive Engineering and Decision Making JA - J Cogn Eng Decis Mak Y1 - 2009///Spr 2009 VL - 3 IS - 1 SP - 67 EP - 91 CY - US PB - Sage Publications SN - 1555-3434 AD - Bisantz, Ann M., Department of Industrial and Systems Engineering, University at Buffalo, State University of New York, 438 Bell Hall, Amherst, NY, US, 14260 N1 - Accession Number: 2010-05627-003. Partial author list: First Author & Affiliation: Bisantz, Ann M.; University at Buffalo, State University of New York, Buffalo, NY, US. Release Date: 20110523. Correction Date: 20111003. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Processes; Visual Perception; Visual Stimulation; Knowledge Representation. Minor Descriptor: Color; Information; Visual Displays. Classification: Cognitive Processes (2340). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 25. Issue Publication Date: Spr 2009. Copyright Statement: All rights reserved. Human Factors and Ergonomics Society. 2009. AB - We conducted two studies that investigated display characteristics related to color (hue, saturation, brightness, and transparency) and contrast with a background for displaying information qualifiers (termed meta-information) such as uncertainty, age, and source quality. Level of detail (or granularity) of the meta-information and task demands were also manipulated. Participants were asked to rank and rate colored regions overlaid on different map backgrounds based on the level of meta-information the regions displayed. Results from Study 1 indicated that participants could appropriately rank and rate levels of meta-information across saturation, brightness, and transparency conditions, and results from Study 1 and Study 2 showed that the natural direction of ordering is complex and dependent on the relevance of different information to the task and the contrast of the overlay region with the background. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - visual representations KW - meta information KW - color KW - visual displays KW - visual stimuli KW - cognitive processes KW - 2009 KW - Cognitive Processes KW - Visual Perception KW - Visual Stimulation KW - Knowledge Representation KW - Color KW - Information KW - Visual Displays KW - 2009 DO - 10.1518/155534309X433726 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-05627-003&site=ehost-live&scope=site UR - UR - ORCID: 0000-0002-1393-2830 UR - bisantz@buffalo.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-17019-006 AN - 2008-17019-006 AU - Bushey, Dean E. T1 - Unmanned aircraft flights and research at the United States Air Force Academy. JF - Journal of Intelligent & Robotic Systems JO - Journal of Intelligent & Robotic Systems Y1 - 2009/03// VL - 54 IS - 1-3 SP - 79 EP - 85 CY - Germany PB - Springer SN - 0921-0296 SN - 1573-0409 AD - Bushey, Dean E., Department of Computer Science, UAV Operations, US Air Force Academy, Colorado Springs, CO, US, 80840 N1 - Accession Number: 2008-17019-006. Partial author list: First Author & Affiliation: Bushey, Dean E.; Department of Computer Science, UAV Operations, US Air Force Academy, Colorado Springs, CO, US. Release Date: 20090413. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Aircraft; Aviation Safety; Experimentation; Expert Systems. Classification: Intelligent Systems (4100); Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 7. Issue Publication Date: Mar, 2009. AB - The United States Air Force Academy is actively involved in unmanned aircraft research across numerous departments involving many projects, aircraft, government agencies, and experimental programs. The importance of these research projects to the Academy, the faculty, the cadets, the Air Force, and to the defense of the nation cannot be understated. In an effort to be proactive in cooperating with recent concerns from the FAA about the growth and proliferation of UAS flights, the Air Force has implemented several new guidelines and requirements. Complying with these guidelines, directives, and regulations has been challenging to the researchers and research activities conducted at USAFA. Finding ways to incorporate these new guidelines effectively and efficiently is critical to research and participation in joint projects and exercises. This paper explores the nature of research at USAFA current restrictions imposed by the various regulations, the current process, short term solutions, and a long term vision for research into UAS at the Academy. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - unmanned aircraft research KW - United States Air Force Academy KW - unmanned aerial systems KW - aviation safety guidelines KW - 2009 KW - Air Force Personnel KW - Aircraft KW - Aviation Safety KW - Experimentation KW - Expert Systems KW - 2009 DO - 10.1007/s10846-008-9258-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-17019-006&site=ehost-live&scope=site UR - dean.bushey@usafa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2010-11301-004 AN - 2010-11301-004 AU - Johnson, Anthony AU - Kimball, Robert AU - Melendez, Barbra AU - Myers, Lem AU - Rhea, Karen AU - Travis, Betty T1 - Breaking with tradition: Preparing faculty to teach in a student-centered or problem-solving environment. JF - PRIMUS: Problems, Resources, and Issues in Mathematics Undergraduate Studies JO - PRIMUS: Problems, Resources, and Issues in Mathematics Undergraduate Studies Y1 - 2009/03// VL - 19 IS - 2 SP - 146 EP - 160 CY - United Kingdom PB - Taylor & Francis SN - 1051-1970 SN - 1935-4053 AD - Johnson, Anthony, Department of Mathematical Sciences, United States Military Academy, 646 Swift Road, West Point, NY, US, 10996 N1 - Accession Number: 2010-11301-004. Partial author list: First Author & Affiliation: Johnson, Anthony; United States Military Academy, West Point, NY, US. Release Date: 20100920. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Educational Personnel; Problem Solving; Teachers. Minor Descriptor: Academic Environment. Classification: Educational Administration & Personnel (3510). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 15. Issue Publication Date: Mar, 2009. Copyright Statement: Taylor & Francis Group, LLC AB - This article views all educational approaches as either traditional (teacher- centered) or non-traditional (learner-centered), with not much emphasis placed on differentiating between the non-traditional models. The purpose of this paper is to describe the impediments to changing one’s approach to teaching and some strategies to overcome those impediments. We will also focus our attention on those educators who seek to change from a traditional approach to a more non-traditional approach to teaching. The three main sources of resistance described are the students, the administration, and the individual attempting the change. The rest of the paper describes strategies and actions to deal with the resistances encountered. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - preparing faculty KW - problem solving environment KW - teachers KW - educators KW - 2009 KW - Educational Personnel KW - Problem Solving KW - Teachers KW - Academic Environment KW - 2009 DO - 10.1080/10511970802409164 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2010-11301-004&site=ehost-live&scope=site UR - anthony.johnson@usma.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2009-03797-004 AN - 2009-03797-004 AU - Helton, William S. AU - Matthews, Gerald AU - Warm, Joel S. T1 - Stress state mediation between environmental variables and performance: The case of noise and vigilance. JF - Acta Psychologica JO - Acta Psychologica JA - Acta Psychol (Amst) Y1 - 2009/03// VL - 130 IS - 3 SP - 204 EP - 213 CY - Netherlands PB - Elsevier Science SN - 0001-6918 AD - Helton, William S., Department of Psychology, University of Canterbury, Private Bag 4800, Christchurch, New Zealand N1 - Accession Number: 2009-03797-004. PMID: 19167690 Partial author list: First Author & Affiliation: Helton, William S.; Department of Psychology, University of Canterbury, Christchurch, New Zealand. Release Date: 20090706. Correction Date: 20140317. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Noise Effects; Stress; Vigilance. Minor Descriptor: Environmental Effects. Classification: Environmental Issues & Attitudes (4070). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adolescence (13-17 yrs) (200); Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: Dundee Stress State Questionnaire DOI: 10.1037/t27031-000. Methodology: Empirical Study; Experimental Replication; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Mar, 2009. AB - Effects of environmental variables on performance may be mediated by individual stress states. In this study the effects of jet-aircraft engine noise and signal salience on vigilance performance and self-reported stress state were examined. One hundred and ninety-two (96 female and 96 male) participants were randomly assigned to four experimental conditions consisting of 48 participants each resulting from the factorial combination of signal salience (high and low salience signals) and noise (95 dBA intermittent aircraft noise or quiet). Performance metrics and self-reported stress state (Task Engagement, Distress, and Worry) were collected. Performance in the noise conditions was significantly better than in the quiet conditions. Performance in the high salience conditions was significantly better than the low salience conditions. Noise elevated Task Engagement and low signal salience elevated Distress. Moreover, structural equation model analyses were used to examine stress state mediation between the experimental variables and performance. These analyses indicated Engagement mediates between noise and vigilance performance. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - stress state KW - environmental variables KW - vigilance performance KW - 2009 KW - Noise Effects KW - Stress KW - Vigilance KW - Environmental Effects KW - 2009 DO - 10.1016/j.actpsy.2008.12.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-03797-004&site=ehost-live&scope=site UR - deak_helton@yahoo.com DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Kuanping Gong AU - Feng Du AU - Zhenhai Xia AU - Durstock, Michael AU - Liming Dai T1 - Nitrogen-Doped Carbon Nanotube Arrays with High Electrocatalytic Activity for Oxygen Reduction. JO - Science JF - Science Y1 - 2009/02/06/ VL - 323 IS - 5915 M3 - Article SP - 760 EP - 764 SN - 00368075 AB - The large-scale practical application of fuel cells will be difficult to realize if the expensive platinum-based electrocatatysts for oxygen reduction reactions (ORRs) cannot be replaced by other efficient, low-cost, and stable electrodes. Here, we report that vertically aligned nitrogen-containing carbon nanotubes (VA-NCNTs) can act as a metal-free electrode with a much better electrocatalytic activity, long-term operation stability, and tolerance to crossover effect than platinum for oxygen redaction in alkaline fuel cells. In air-saturated 0.1 motor potassium hydroxide, we observed a steady-state output potential of-80 miilivolts and a current density of 4.1 mitliamps per square centimeter at-0.22 volts, compared with -85 millivolts and 1.1 milliamps per square centimeter at -0.20 volts for a platinum-carbon electrode. The incorporation of electron-accepting nitrogen atoms in the conjugated nanotube carbon plane appears to impart a relatively high positive charge density on adjacent carbon atoms. This effect, coupled with aligning the NCNTs, provides a four-electron pathway for the ORR on VA-NCNTs with a superb performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Carbon nanotubes KW - Nitrogen KW - Electrocatalysis KW - Fuel cells KW - Oxidation-reduction reaction KW - Electrodes KW - Potassium hydroxide N1 - Accession Number: 36624279; Kuanping Gong 1; Feng Du 1; Zhenhai Xia 2; Durstock, Michael 3; Liming Dai 1,4; Email Address: ldai@udayton.edu; Affiliations: 1: Department of Chemical and Materials Engineering, University of Dayton, 300 College Park, Dayton, OH 45469, USA; 2: Department of Mechanical Engineering, University of Akron, Akron, OH 44325, USA; 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, RXBP, Wright-Patterson Air Force Base, OH 45433, USA; 4: Department of Chemistry and University of Dayton Research Institute and Institute for the Development and Commercialization of Advanced Sensor Technology and Wright Brothers Institute, Dayton, OH 45469, USA; Issue Info: 2/6/2009, Vol. 323 Issue 5915, p760; Thesaurus Term: RESEARCH; Subject Term: Carbon nanotubes; Subject Term: Nitrogen; Subject Term: Electrocatalysis; Subject Term: Fuel cells; Subject Term: Oxidation-reduction reaction; Subject Term: Electrodes; Subject Term: Potassium hydroxide; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325181 Alkali and chlorine manufacturing; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=36624279&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Kearfott, Kimberlee J. AU - Dewey, Steven C. T1 - A Method for the Quantitative Gamma Spectroscopic Analysis of an Unusually Shaped Unknown Source. JO - Health Physics JF - Health Physics Y1 - 2009/02/02/ VL - 96 IS - 2 M3 - Article SP - S31 EP - S36 SN - 00179078 AB - The article focuses on a method for the quantitative gamma spectroscopic analysis of an unusually shaped unknown source. The error in the calculated activity of the capacitors was estimated to be 30 to 40 percent. If the composition of the item was not determined and the source of distribution within the item was unknown, then it is estimated that the actual activity may have been in error by 50 percent to 100 percent, depending upon the source distribution which was chosen. According to the article, the method highlighted the importance of properly determining the amount of self shielding present from a source and determining the source distribution. KW - Spectrum analysis KW - Radiation KW - Ionizing radiation KW - Gamma rays KW - Capacitors KW - Electromagnetic waves KW - detector KW - gamma KW - germanium KW - naturally occurring radionuclides KW - operational topics KW - spectrometry N1 - Accession Number: 36358054; Kearfott, Kimberlee J. 1; Email Address: kearfottk@hotmail.com; Dewey, Steven C. 2; Affiliations: 1: Professor, Nuclear Engineering and Radiological Sciences, University of Michigan; 2: United States Air Force School of Aerospace Medicine, Occupational Environmental Health Division, Health Physics Branch, Radiation Analysis Laboratories, 2350 Gillingham Drive, Brooks City-Base, TX 78235; Issue Info: Feb2009, Vol. 96 Issue 2, pS31; Thesaurus Term: Spectrum analysis; Thesaurus Term: Radiation; Thesaurus Term: Ionizing radiation; Subject Term: Gamma rays; Subject Term: Capacitors; Subject Term: Electromagnetic waves; Author-Supplied Keyword: detector; Author-Supplied Keyword: gamma; Author-Supplied Keyword: germanium; Author-Supplied Keyword: naturally occurring radionuclides; Author-Supplied Keyword: operational topics; Author-Supplied Keyword: spectrometry; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 6p; Illustrations: 2 Black and White Photographs, 3 Charts, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=36358054&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR T1 - Associates of Physical Function and Pain in Patients with Patellofemoral Pain Syndrome AU - Piva, Sara R. AU - Fitzgerald, G. Kelley AU - Irrgang, James J. AU - Fritz, Julie M. AU - Wisniewski, Stephen AU - McGinty, Gerald T. AU - Childs, John D. AU - Domenech, Manuel A. AU - Jones, Scott AU - Delitto, Anthony JO - Archives of Physical Medicine & Rehabilitation JF - Archives of Physical Medicine & Rehabilitation Y1 - 2009/02// VL - 90 IS - 2 SP - 285 EP - 295 SN - 00039993 N1 - Accession Number: 36607920; Author: Piva, Sara R.: 1 email: spiva@pitt.edu. Author: Fitzgerald, G. Kelley: 1 Author: Irrgang, James J.: 2 Author: Fritz, Julie M.: 3 Author: Wisniewski, Stephen: 4 Author: McGinty, Gerald T.: 5 Author: Childs, John D.: 6 Author: Domenech, Manuel A.: 7 Author: Jones, Scott: 8 Author: Delitto, Anthony: 1 ; Author Affiliation: 1 Department of Physical Therapy, University of Pittsburgh, Pittsburgh, PA: 2 Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA: 3 Department of Physical Therapy, University of Utah, Salt Lake City, UT: 4 Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA: 5 Physical Therapy Element of United States Air Force Academy, Colorado Springs, CO: 6 Doctor Program of Physical Therapy, US Army–Baylor University, Fort Sam Houston, TX: 7 Department of Rehabilitation Sciences, Texas Tech University Health Science Center, Odessa, TX: 8 Ramstein Outpatient Physical Medicine Clinic, Ramstein Air Base, Kaiserslautern, Germany; No. of Pages: 11; Language: English; Publication Type: Article; Update Code: 20090316 N2 - Abstract: Piva SR, Fitzgerald GK, Irrgang JJ, Fritz JM, Wisniewski S, McGinty GT, Childs JD, Domenech MA, Jones S, Delitto A. Associates of physical function and pain in patients with patellofemoral pain syndrome. Objectives: To explore whether impairment of muscle strength, soft tissue length, movement control, postural and biomechanic alterations, and psychologic factors are associated with physical function and pain in patients with patellofemoral pain syndrome (PFPS). Design: Cross-sectional study. Setting: Rehabilitation outpatient. Participants: Seventy-four patients diagnosed with PFPS. Interventions: Not applicable. Main Outcome Measures: Measurements were self-reported function and pain; strength of quadriceps, hip abduction, and hip external rotation; length of hamstrings, quadriceps, plantar flexors, iliotibial band/tensor fasciae latae complex, and lateral retinaculum; foot pronation; Q-angle; tibial torsion; visual observation of quality of movement during a lateral step-down task; anxiety; and fear-avoidance beliefs. Results: After controlling for age and sex, anxiety and fear-avoidance beliefs about work and physical activity were associated with function, while only fear-avoidance beliefs about work and physical activity were associated with pain. Conclusions: Psychologic factors were the only associates of function and pain in patients with PFPS. Factors related to physical impairments did not associate to function or pain. Our results should be validated in other samples of patients with PFPS. Further studies should determine the role of other psychologic factors, and how they relate to anxiety and fear-avoidance beliefs in these patients. Copyright &y& Elsevier KW - *PLICA syndrome KW - *MUSCLE strength KW - *MEDICAL rehabilitation KW - *KNEE -- Wounds & injuries KW - *PATIENTS KW - *OUTPATIENT medical care KW - *QUALITY of life KW - *ANXIETY KW - Anxiety KW - Fear KW - Fear-Avoidance Beliefs Questionnaire ( FABQ ) KW - Fear-Avoidance Beliefs—physical activity ( FABQ-PA ) KW - Fear-Avoidance beliefs—work ( FABQ-W ) KW - iliotibial band/tensor fasciae latae ( ITB/TFL ) KW - knee injury and osteoarthritis outcome score ( KOOS ) KW - Knee Outcome Survey–Activity of Daily Living Scale ( KOS-ADLS ) KW - numerical pain rating scale ( NPRS ) KW - Pain KW - Patella KW - patellofemoral pain syndrome ( PFPS ) KW - Quality of life KW - Rehabilitation UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=36607920&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Hai Deng AU - Himed, Braham T1 - A Virtual Antenna Beamforming (VAB) Approach for Radar Systems by Using Orthogonal Coding Waveforms. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2009/02// Y1 - 2009/02// VL - 57 IS - 2 M3 - Article SP - 425 EP - 435 SN - 0018926X AB - An innovative approach is introduced to form virtual transmitting and receiving radar antenna beams simultaneously by transmitting orthogonal coding waveforms from the antenna elements and digitally processing of their echoes at the receiver. Multiple virtual transmitting-receiving beams can be' formed simultaneously by employing an equal number of beamforming filters without increasing transmitting power or antenna gain or resolution loss. The virtually formed antenna beams can provide equivalent antenna gains and spatial resolutions as the conventional phased arrays of the same size. Because the actual antenna radiation pattern can be made almost isotropic, the new system has low probability of intercept (LPI) property. With both transmitting and receiving beams virtually implemented through digital filtering, costly radiation phase shift used in phased arrays is not needed for beam scanning in the proposed system. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR -- Antennas KW - RADIATION KW - ELECTRONIC systems KW - ELECTROMAGNETIC fields KW - ENGINEERING systems KW - ELECTRIC conductivity KW - DIGITAL filters (Mathematics) KW - ANTENNA arrays N1 - Accession Number: 37313490; Source Information: Feb2009, Vol. 57 Issue 2, p425; Subject Term: RADAR -- Antennas; Subject Term: RADIATION; Subject Term: ELECTRONIC systems; Subject Term: ELECTROMAGNETIC fields; Subject Term: ENGINEERING systems; Subject Term: ELECTRIC conductivity; Subject Term: DIGITAL filters (Mathematics); Subject Term: ANTENNA arrays; Subject Term: ; Number of Pages: 11p; ; Illustrations: 2 Diagrams, 5 Graphs; ; Document Type: Article; L3 - 10.11l09/TAP.2008.2011387 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=37313490&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Gadhamshetty, Venkataramana AU - Johnson, David C. AU - Nirmalakhandan, Nagamany AU - Smith, Geoff B. AU - Deng, Shuguang T1 - Feasibility of biohydrogen production at low temperatures in unbuffered reactors JO - International Journal of Hydrogen Energy JF - International Journal of Hydrogen Energy Y1 - 2009/02// VL - 34 IS - 3 M3 - Article SP - 1233 EP - 1243 SN - 03603199 AB - Abstract: Feasibility of biohydrogen production by dark fermentation at two temperatures (22°C and 37°C) in unbuffered batch reactors was evaluated using heat-treated compost as inocula and sucrose as substrate, without any initial pH adjustment or inorganic nutrient supplements. Gas production was quantified by two different pressure release methods – intermittent pressure release (IPR) and continuous pressure release (CPR). Hydrogen production (47.2mL/gCOD/L) and sucrose-to-hydrogen conversion efficiency (53%) were both found to be highest at the lower temperature and IPR conditions. Hydrogen production was higher at the lower temperature irrespective of the pressure release condition. The high yield of 4.3mol of hydrogen/mole of sucrose obtained in this study under IPR conditions at 22°C is equivalent to or better than the literature values reported for buffered reactors. Even though literature reports have implied potential inhibition of hydrogen production at high hydrogen partial pressures resulting from IPR conditions, our results did not show any negative effects at hydrogen partial pressures exceeding 5.0×104 Pa. While our findings are contrary to literature reports, they make a strong case for cost-effective hydrogen production by dark fermentation. [Copyright &y& Elsevier] AB - Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Hydrogen production KW - Fermentation KW - Energy conversion KW - Pressure KW - Cost effectiveness KW - Biomass energy KW - Low temperatures KW - Chemical reactors KW - Sucrose KW - Anaerobic fermentation KW - Bioenergy KW - Biohydrogen KW - Gibbs free energy KW - Intermittent pressure release KW - Temperature KW - Unbuffered N1 - Accession Number: 36337611; Gadhamshetty, Venkataramana 1; Email Address: vgadhamshetty@fairpoint.net; Johnson, David C. 2; Nirmalakhandan, Nagamany 3; Smith, Geoff B. 4; Deng, Shuguang 5; Affiliations: 1: Air Force Research Laboratory, Tyndall AFB, 139 Barnes Drive, Panama City, FL 32403, USA; 2: Institute for Energy and Environment, New Mexico State University, Las Cruces, NM 88003, USA; 3: Civil Engineering Department, New Mexico State University, Las Cruces, NM 88003, USA; 4: Biology Department, New Mexico State University, Las Cruces, NM 88003, USA; 5: Chemical Engineering Department, New Mexico State University, Las Cruces, NM 88003, USA; Issue Info: Feb2009, Vol. 34 Issue 3, p1233; Thesaurus Term: Hydrogen production; Thesaurus Term: Fermentation; Thesaurus Term: Energy conversion; Thesaurus Term: Pressure; Thesaurus Term: Cost effectiveness; Thesaurus Term: Biomass energy; Subject Term: Low temperatures; Subject Term: Chemical reactors; Subject Term: Sucrose; Author-Supplied Keyword: Anaerobic fermentation; Author-Supplied Keyword: Bioenergy; Author-Supplied Keyword: Biohydrogen; Author-Supplied Keyword: Gibbs free energy; Author-Supplied Keyword: Intermittent pressure release; Author-Supplied Keyword: Temperature; Author-Supplied Keyword: Unbuffered; NAICS/Industry Codes: 221117 Biomass Electric Power Generation; NAICS/Industry Codes: 221119 Other electric power generation; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ijhydene.2008.10.037 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=36337611&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 105452318 T1 - A day in the life. AU - Miller RR Y1 - 2009/02// N1 - Accession Number: 105452318. Language: English. Entry Date: 20090417. Revision Date: 20150711. Publication Type: Journal Article; pictorial. Journal Subset: Allied Health; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services. NLM UID: 9513102. KW - Military Personnel KW - Physician Assistants KW - Afghanistan KW - War SP - 19 EP - 20 JO - JAAPA: Journal of the American Academy of Physician Assistants (Haymarket Media, Inc.) JF - JAAPA: Journal of the American Academy of Physician Assistants (Haymarket Media, Inc.) JA - JAAPA J AM ACAD PHYSICIAN ASSIST VL - 22 IS - 2 CY - New York, New York PB - Haymarket Media, Inc. SN - 1547-1896 AD - United States Air Force U2 - PMID: 19317110. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105452318&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Berman, Elizabeth S. AU - Brooman, Eric W. T1 - Evaluation of APCVD aluminum coatings as an environmentally acceptable alternative to electroplated cadmium coatings JO - Metal Finishing JF - Metal Finishing Y1 - 2009/02// VL - 107 IS - 2 M3 - Article SP - 35 EP - 43 SN - 00260576 N1 - Accession Number: 37224772; Berman, Elizabeth S. 1; Brooman, Eric W. 1; Affiliations: 1: Air Force Research Laboratory, Environment & Energy Quality Team, Wright-Patterson Air Force Base, Dayton, OH; Issue Info: Feb2009, Vol. 107 Issue 2, p35; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=37224772&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Hicks, Michael J. AU - Smith, Jeff T1 - Warfare, Civil Conflict and the Spatial Impacts on Domestic Investment: Evidence from South America, 1950-2000. JO - Peace Economics, Peace Science, & Public Policy JF - Peace Economics, Peace Science, & Public Policy Y1 - 2009/02// VL - 15 IS - 1 M3 - Article SP - 1 EP - 12 SN - 15548597 AB - This paper reports the effect of intra- and international conflict on domestic investment in South America from 1950-2000. We combine data from the Penn World Table 6.1 and the Militarized Interstate Dispute Dataset from the Correlates of War project in a spatial investment accelerator model. We find that the magnitude of conflicts (total fatal casualties) is associated with diminished domestic investment, in magnitudes that range from 0.1 percent to one third of total investment across South America’s experience in civil wars, conflicts and ethnic wars. We find no evidence of spatial spillovers in South America’s civil wars. The paucity of international conflicts in the region leads us to conclude there is no more than suggestive evidence of large impacts and spatial spillovers of international conflicts. [ABSTRACT FROM AUTHOR] AB - Copyright of Peace Economics, Peace Science, & Public Policy is the property of De Gruyter and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAR -- Economic aspects KW - SAVING & investment KW - ACCELERATION principle (Economics) KW - INTERNATIONAL conflict KW - CIVIL war KW - SOUTH America KW - conflict KW - investment KW - spatial econometrics N1 - Accession Number: 45559786; Hicks, Michael J. 1; Email Address: mhicks@bsu.edu; Smith, Jeff 2; Email Address: jeffrey.smith@usafa.edu; Affiliations: 1: Ball State University; 2: United States Air Force Academy; Issue Info: 2009, Vol. 15 Issue 1, preceding p1; Thesaurus Term: WAR -- Economic aspects; Thesaurus Term: SAVING & investment; Thesaurus Term: ACCELERATION principle (Economics); Subject Term: INTERNATIONAL conflict; Subject Term: CIVIL war; Subject: SOUTH America; Author-Supplied Keyword: conflict; Author-Supplied Keyword: investment; Author-Supplied Keyword: spatial econometrics; Number of Pages: 14p; Illustrations: 2 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=45559786&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Reboulet, James AU - Cunningham, Robert AU - Gunasekar, Palur G. AU - Chapman, Gail D. AU - Stevens, Sean C. T1 - Loop System for Creating Jet Fuel Vapor Standards Used in the Calibration of Infrared Spectrophotometers and Gas Chromatographs. JO - Toxicology Mechanisms & Methods JF - Toxicology Mechanisms & Methods Y1 - 2009/02// VL - 19 IS - 2 M3 - Article SP - 123 EP - 128 PB - Taylor & Francis Ltd SN - 15376516 AB - A whole body inhalation study of mixed jet fuel vapor and its aerosol necessitated the development of a method for preparing vapor only standards from the neat fuel. Jet fuel is a complex mixture of components which partitions between aerosol and vapor when aspirated based on relative volatility of the individual compounds. A method was desired which could separate the vapor portion from the aerosol component to prepare standards for the calibration of infrared spectrophotometers and a head space gas chromatography system. A re-circulating loop system was developed which provided vapor only standards whose composition matched those seen in an exposure system. Comparisons of nominal concentrations in the exposure system to those determined by infrared spectrophotometry were in 92-95% agreement. Comparison of jet fuel vapor concentrations determined by infrared spectrophotometry compared to head space gas chromatography yielded a 93% overall agreement in trial runs. These levels of agreement show the loop system to be a viable method for creating jet fuel vapor standards for calibrating instruments. [ABSTRACT FROM AUTHOR] AB - Copyright of Toxicology Mechanisms & Methods is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUEL KW - Automobiles -- Fuel systems -- Vapor lock KW - Aerosols (Sprays) KW - Vapors KW - Gas chromatography KW - Jet planes KW - Spectrophotometers KW - Chromatography KW - Complex mixtures KW - Head space analysis KW - Infrared spectrophotometry KW - Inhalation KW - Jet fuel N1 - Accession Number: 36359587; Reboulet, James 1; Cunningham, Robert 2; Gunasekar, Palur G. 2; Chapman, Gail D. 2; Email Address: gail.chapman@wpafb.af.mil; Stevens, Sean C. 3; Affiliations: 1: Naval Health Research Laboratory Detachment/Environmental Health Effects Laboratory, SAIC Inc, Wright-Patterson AFB, OH, USA; 2: Naval Health Research Laboratory Detachment/Environmental Health Effects Laboratory, Wright-Patterson AFB, OH, USA; 3: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Issue Info: Feb2009, Vol. 19 Issue 2, p123; Thesaurus Term: FUEL; Thesaurus Term: Automobiles -- Fuel systems -- Vapor lock; Thesaurus Term: Aerosols (Sprays); Thesaurus Term: Vapors; Thesaurus Term: Gas chromatography; Subject Term: Jet planes; Subject Term: Spectrophotometers; Author-Supplied Keyword: Chromatography; Author-Supplied Keyword: Complex mixtures; Author-Supplied Keyword: Head space analysis; Author-Supplied Keyword: Infrared spectrophotometry; Author-Supplied Keyword: Inhalation; Author-Supplied Keyword: Jet fuel; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; Number of Pages: 6p; Illustrations: 2 Diagrams, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1080/15376510802305054 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=36359587&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Gadhamshetty, Venkataramana AU - Johnson, David C. AU - Nirmalakhandan, Nagamany AU - Smith, Geoff B. AU - Deng, Shuguang T1 - Dark and acidic conditions for fermentative hydrogen production JO - International Journal of Hydrogen Energy JF - International Journal of Hydrogen Energy Y1 - 2009/01/15/ VL - 34 IS - 2 M3 - Article SP - 821 EP - 826 SN - 03603199 AB - Abstract: Bacterial consortium capable of producing hydrogen in low pH (LpH) range of 3.3–4.3 is reported in this study. This operational pH is two full units below that of previously reported hydrogen producing organisms. Low pH inocula were derived from a batch biohydrogen reactor inoculated with heat treated compost (∼120°C, 2h), which was allowed to accumulate biogas to reach three atmospheres of equivalent headspace pressure and system pH of 3.0. Acclimation effect had positive influence on H2 production and LpH inocula were passed sequentially into more than 15 generations to achieve consistent conversion efficiency and hydrogen composition, further tested in 23 other culture cycles. With hydrogen composition in the headspace ranging from 50% to 60%, conversion efficiency of ∼43% achieved in LpH systems is comparable to that of other buffered systems. Feasibility of hydrogen production in LpH systems is demonstrated in unbuffered reactors under intermittent pressure release conditions and in absence of initial pH adjustment and stirring. Conversion efficiencies, however, decreased by ∼1-fold for each 3°C drop below the optimum temperature of 22°C. [Copyright &y& Elsevier] AB - Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Hydrogen production KW - Fermentation KW - Microbial inoculants KW - Bacteria KW - Hydrogen-ion concentration KW - Biomass energy KW - Energy conversion KW - Chemical reactors KW - Biofuel KW - Biohydrogen KW - Compost KW - Hydrogen KW - Low pH KW - Unbuffered N1 - Accession Number: 36299893; Gadhamshetty, Venkataramana 1; Email Address: vgadhamshetty@fairpoint.net; Johnson, David C. 2; Nirmalakhandan, Nagamany 3; Smith, Geoff B. 4; Deng, Shuguang 5; Affiliations: 1: Air Force Research Laboratory, Tyndall AFB, 139 Barnes Drive, Panama City, FL 32403, USA; 2: Institute for Energy and Environment, New Mexico State University, Las Cruces, NM 88003, USA; 3: Civil Engineering Department, New Mexico State University, Las Cruces, NM 88003, USA; 4: Biology Department, New Mexico State University, Las Cruces, NM 88003, USA; 5: Chemical Engineering Department, New Mexico State University, Las Cruces, NM 88003, USA; Issue Info: Jan2009, Vol. 34 Issue 2, p821; Thesaurus Term: Hydrogen production; Thesaurus Term: Fermentation; Thesaurus Term: Microbial inoculants; Thesaurus Term: Bacteria; Thesaurus Term: Hydrogen-ion concentration; Thesaurus Term: Biomass energy; Thesaurus Term: Energy conversion; Subject Term: Chemical reactors; Author-Supplied Keyword: Biofuel; Author-Supplied Keyword: Biohydrogen; Author-Supplied Keyword: Compost; Author-Supplied Keyword: Hydrogen; Author-Supplied Keyword: Low pH; Author-Supplied Keyword: Unbuffered; NAICS/Industry Codes: 221117 Biomass Electric Power Generation; NAICS/Industry Codes: 221119 Other electric power generation; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.ijhydene.2008.11.040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=36299893&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Warm, Joel S. AU - Matthews, Gerald AU - Parasuraman, Raja T1 - Cerebral Hemodynamics and Vigilance Performance. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2009/01/02/Jan2009 Supplement 1 VL - 21 M3 - Article SP - 75 EP - 100 PB - Taylor & Francis Ltd SN - 08995605 AB - Five studies are described using transcranial Doppler sonography (TCD) and near-infrared spectroscopy (NIRS) to examine brain systems in vigilance. The results indicate that the vigilance decrement, the temporal decline that typifies vigilance performance, is paralleled by a decline in cerebral blood flow velocity as indexed by TCD. In addition, both measures showed greater activity in the right than in the left cerebral hemisphere in response to a variety of psychophysical challenges, indicating a right hemispheric system in control of vigilance performance. The TCD measure was also found to be potentially useful in selecting observers for vigilance assignments. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CEREBRAL circulation KW - INFRARED spectroscopy KW - ULTRASONIC imaging KW - DIAGNOSTIC ultrasonic imaging KW - DUPLEX ultrasonography N1 - Accession Number: 36273332; Warm, Joel S. 1; Email Address: jswarm@fuse.net; Matthews, Gerald 2; Parasuraman, Raja 3; Source Information: Jan2009 Supplement 1, Vol. 21, p75; Subject: CEREBRAL circulation; Subject: INFRARED spectroscopy; Subject: ULTRASONIC imaging; Subject: DIAGNOSTIC ultrasonic imaging; Subject: DUPLEX ultrasonography; Number of Pages: 26p; Illustrations: 1 Color Photograph, 4 Diagrams, 17 Graphs; Document Type: Article L3 - 10.1080/08995600802554706 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=36273332&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - CHAP ID - 2009-19027-004 AN - 2009-19027-004 AU - Wood, James M. AU - Nathan, Debbie AU - Nezworski, M. Teresa AU - Uhl, Elizabeth ED - Bottoms, Bette L. ED - Najdowski, Cynthia J. ED - Goodman, Gail S. ED - Bottoms, Bette L., (Ed) ED - Najdowski, Cynthia J., (Ed) ED - Goodman, Gail S., (Ed) T1 - Child sexual abuse investigations: Lessons learned from the McMartin and other daycare cases. T2 - Children as victims, witnesses, and offenders: Psychological science and the law. Y1 - 2009/// SP - 81 EP - 101 CY - New York, NY, US PB - Guilford Press SN - 1-60623-332-7 SN - 978-1-60623-332-0 N1 - Accession Number: 2009-19027-004. Partial author list: First Author & Affiliation: Wood, James M.; Dept of Psychology, U Texas at El Paso, El Paso, TX, US. Release Date: 20091207. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Textbook/Study Guide. ISBN: 1-60623-332-7, Hardcover; 978-1-60623-332-0, Hardcover. Language: English. Major Descriptor: Child Abuse Reporting; Child Day Care; Deception; Sexual Abuse. Minor Descriptor: Child Abuse. Classification: Forensic Psychology & Legal Issues (4200). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 21. AB - During the 1980s and early 1990s, American newspaper headlines tracked an epidemic of bizarre sexual abuse cases as it spread across the nation. From California to Massachusetts to Florida, hundreds of young children reported being victimized by their teachers and daycare workers, often in orgies involving sex rings or satanic cults. Social scientists now generally agree that, although sexual abuse of children is a real and important social problem, the bizarre allegations that fueled the daycare cases of the 1980s were mainly or entirely false. Scholarly interest has come to focus not on whether the allegations were true but instead on two questions that form the topic of this chapter: What contributing factors created these bizarre cases? What practical lessons can be learned from them to guide child abuse investigations in the present? In some important respects, these cases may seem remote from the routine sexual abuse cases seen by law enforcement and child protection services (CPS) today. Most important, the daycare cases of the 1980s were characterized by epidemics of false allegations by children, whereas the large majority of sexual abuse allegations made by children to police and CPS today are probably true and reliable. In addition, the community hysteria and investigative excesses seen in the 1980s are only rarely encountered today, thanks largely to changes in forensic and interviewing procedures that have been made during the intervening years. However, although the daycare cases of the 1980s are not typical, they can teach a great deal about the problems that can engulf children and communities even today when the necessary factors converge. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - child sexual abuse investigations KW - sexual abuse allegations KW - daycare abuse KW - false allegations KW - 2009 KW - Child Abuse Reporting KW - Child Day Care KW - Deception KW - Sexual Abuse KW - Child Abuse KW - 2009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-19027-004&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2009-10941-011 AN - 2009-10941-011 AU - Schreiber, Brian T. AU - Bennett, Winston Jr. AU - Colegrove, Charles M. AU - Portrey, Antoinette M. AU - Greschke, David A. AU - Bell, Herbert H. ED - Ericsson, K. Anders ED - Ericsson, K. Anders, (Ed) T1 - Evaluating pilot performance. T2 - Development of professional expertise: Toward measurement of expert performance and design of optimal learning environments. Y1 - 2009/// SP - 247 EP - 270 CY - New York, NY, US PB - Cambridge University Press SN - 0-521-74008-8 SN - 978-0-521-74008-1 SN - 978-0-521-51846-8 N1 - Accession Number: 2009-10941-011. Partial author list: First Author & Affiliation: Schreiber, Brian T.; Lumir Research Institute, Grayslake, IL, US. Release Date: 20100125. Correction Date: 20120618. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-521-74008-8, Paperback; 978-0-521-74008-1, Paperback; 978-0-521-51846-8, Hardcover. Language: English. Conference Information: Office of Naval Research conference, Mar, 2007, Westin Grand Bohemian Hotel, Orlando, FL, US. Conference Note: After the above conference, the plan then was that all presenters would revise their chapters, which were to be given to each of the group discussants, who then were to finalize the written version of their commentaries. Finally, all the written materials (chapters and written commentaries) were handed over to two general discussants to allow them to finalize their contribution. Major Descriptor: Aircraft Pilots; Flight Simulation; Job Performance. Minor Descriptor: Aircraft; Flight Instrumentation; Military Training. Classification: Human Factors Engineering (4010); Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 24. AB - This chapter discusses the evaluation of pilot performance using simulated flight as one method in both military and commercial settings. In many fields the benefits of task-specific and experiential training are beginning to experience investigation and consideration, with an integration of training and historically conventional methods of education. This is not the case with the field of aviation, where the importance of task-specific training has been realized since the initiation of manned flight. As technologies within the aviation industry increased in complexity and sophistication over the past century, so did the demand for training and measuring pilot proficiency. This growing demand was the impetus for the development in flight simulation, within both the military and commercial industries. This development was to address the hazards of flying, the knowledge and skills required to pilot an airplane, and the need for a training aid to supplement pilot instruction. Over the years, the need for assessing pilot performance has paralleled the simulation industry's development. In both cases, the needs have grown in number, type, and complexity. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - pilot performance KW - simulated flight KW - manned flight KW - military KW - commercial aircraft KW - aviation KW - 2009 KW - Aircraft Pilots KW - Flight Simulation KW - Job Performance KW - Aircraft KW - Flight Instrumentation KW - Military Training KW - 2009 DO - 10.1017/CBO9780511609817.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-10941-011&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Phillips, Julia AU - Newman, Alexandra M. AU - Walls, Michael R. T1 - Utilizing a Value of Information Framework to Improve Ore Collection and Classification Procedures. JO - Engineering Economist JF - Engineering Economist Y1 - 2009/01// VL - 54 IS - 1 M3 - Article SP - 50 EP - 74 PB - Taylor & Francis Ltd SN - 0013791X AB - This case study utilizes a value of information decision framework to provide mine managers guidance regarding the purchase of ore grade scanners. LKAB's Kiruna mine produces three types of iron ore to meet long-term contractual agreements on a monthly basis. There is a priori uncertainty regarding the ore type in any given mineable section of the orebody. In addition, there is extracted ore type uncertainty that is introduced by the mining process. These uncertainties are better understood by obtaining more precise (real-time) information. In addition, a better understanding of the uncertainties can improve the quality of operational decisions and increase the overall profitability of the mine. This case study provides a framework for measuring the economic impact of information purchases in a mining context and discusses the implications of those findings. [ABSTRACT FROM AUTHOR] AB - Copyright of Engineering Economist is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MANAGEMENT information systems KW - MINERAL industries KW - DECISION making KW - MINE management KW - ECONOMIC impact KW - CASE studies KW - IRON ore reserves KW - SCANNING systems KW - A priori N1 - Accession Number: 36789536; Phillips, Julia 1; Newman, Alexandra M. 2; Email Address: anewman@mines.edu; Walls, Michael R. 2; Affiliations: 1: Department of Mathematical Sciences, United States Air Force Academy, Colorado, USA; 2: Division of Economics and Business, Colorado School of Mines, Golden, Colorado, USA; Issue Info: 2009, Vol. 54 Issue 1, p50; Thesaurus Term: MANAGEMENT information systems; Thesaurus Term: MINERAL industries; Thesaurus Term: DECISION making; Thesaurus Term: MINE management; Thesaurus Term: ECONOMIC impact; Subject Term: CASE studies; Subject Term: IRON ore reserves; Subject Term: SCANNING systems; Subject Term: A priori; NAICS/Industry Codes: 423520 Coal and Other Mineral and Ore Merchant Wholesalers; NAICS/Industry Codes: 418920 Mineral, ore and precious metal merchant wholesalers; Number of Pages: 25p; Illustrations: 3 Diagrams, 4 Charts, 2 Graphs; Document Type: Article L3 - 10.1080/00137910802711883 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=36789536&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - CHAP ID - 2015-02015-161 AN - 2015-02015-161 AU - Kortum, Philip AU - Bias, Randolph G. AU - Knott, Benjamin A. AU - Bushey, Robert G. ED - Zaphiris, Panayiotis ED - Ang, Chee Siang ED - Zaphiris, Panayiotis, (Ed) ED - Ang, Chee Siang, (Ed) T1 - The effect of choice and announcement duration on the estimation of telephone hold time. T2 - Human computer interaction: Concepts, methodologies, tools, and applications. Y1 - 2009/// SP - 2404 EP - 2423 CY - Hershey, PA, US PB - Information Science Reference/IGI Global SN - 978-1-60566-052-3 SN - 978-1-60566-053-0 N1 - Accession Number: 2015-02015-161. Partial author list: First Author & Affiliation: Kortum, Philip; Rice University, Houston, TX, US. Release Date: 20151221. Correction Date: 20170302. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-1-60566-052-3, Hardcover; 978-1-60566-053-0, Digital (undefined format). Language: English. Major Descriptor: Business; Consumer Behavior; Subjectivity; Time Estimation. Minor Descriptor: Public Service Announcements. Classification: Consumer Attitudes & Behavior (3920). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 20. AB - If a caller is placed on hold when they call a business, about half will hang up before the call is answered. Of those that hang up, only half of those will call back (Staino, 1994). Optimizing the on-hold experience has the potential to reduce hang-ups and make being put on hold more palatable to the caller. The current study assessed the influence of the opportunity to make a music choice and the length of pre-music announcement duration on perceived on-hold durations and customer satisfaction. Subjective assessments of on-hold times were significantly shorter with longer announcements, but satisfaction did not change. The chance to choose music improved satisfaction, but did not significantly reduce subjective time estimates. To test if multiple within-subject trials might have led to prospective time judgments, a between-subjects design replication was conducted, with each participant estimating only one time interval. A similar pattern of results was obtained. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - announcement duration KW - pre-music announcement duration KW - subjective time estimates KW - customer satisfaction KW - subjective assessments KW - 2009 KW - Business KW - Consumer Behavior KW - Subjectivity KW - Time Estimation KW - Public Service Announcements KW - 2009 DO - 10.4018/978-1-87828-991-9.ch160 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-02015-161&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Sofka, Josef AU - Nikulin, Vladimir V. AU - Skormin, Victor A. AU - Hughes, David H. AU - Legare, David J. T1 - Laser Communication Between Mobile Platforms. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2009/01// VL - 45 IS - 1 M3 - Article SP - 336 EP - 346 SN - 00189251 AB - Practical laser communication is impeded by the inherent strict requirements on agile and accurate steering of the laser beam over a wide angular range that are addressed by the pointing, acquisition, and tracking (PAT) system. While the vehicle carrying the optical instrumentation is in motion, a PAT system is required to compensate for the vibrations applied to the optical platform through the proper application of advanced control laws. This paper presents a feedforward vibration rejection system interacting with an optical tracking system to successfully perform the PAT task. It features a set of inertial navigation sensors to monitor the optical platform orientation, and the optical tracker monitoring the optical alignment errors. The control effort is defined on the basis of both signals and upon amplification drives the actuators of a novel singularity-free full-hemisphere-range robotic manipulator supporting the optical platform. The resultant technology enables two ground vehicles navigating through a difficult terrain to maintain optical connectivity sufficient for reliable laser communication. The paper presents the development of an extended Kalman filter "fusing" the inertial navigation sensor data, the design and implementation of the disturbance rejection/optical tracking control system, and the results of the experimental evaluation of the overall system performance. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDUSTRIAL applications KW - CONTROL theory (Mathematics) KW - SYSTEMS engineering KW - LASER communication systems KW - ARTIFICIAL satellite tracking KW - LASERS KW - KALMAN filtering N1 - Accession Number: 43605042; Sofka, Josef 1; Email Address: jozefsofka@hotmail.com; Nikulin, Vladimir V. 1; Skormin, Victor A. 1; Hughes, David H. 2; Legare, David J. 2; Affiliations: 1: Dept. of Electrical and Computer Engineering, SUNY Binghamton, 118 Moeller St., Binghamton, NY 13904; 2: Air Force Research Laboratory, 26 Electronic Pkwy., Rome, NY 13441-4514; Issue Info: Jan2009, Vol. 45 Issue 1, p336; Thesaurus Term: INDUSTRIAL applications; Thesaurus Term: CONTROL theory (Mathematics); Thesaurus Term: SYSTEMS engineering; Subject Term: LASER communication systems; Subject Term: ARTIFICIAL satellite tracking; Subject Term: LASERS; Subject Term: KALMAN filtering; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 517910 Other telecommunications; NAICS/Industry Codes: 517919 All Other Telecommunications; Number of Pages: 11p; Illustrations: 2 Black and White Photographs, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=43605042&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Kirawanich, Phumin AU - Yakura, Susumu J. AU - Islam, Naz E. T1 - Study of High-Power Wideband Terahertz-Pulse Generation Using Integrated High-Speed Photoconductive Semiconductor Switches. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2009/01// Y1 - 2009/01// VL - 37 IS - 1 M3 - Article SP - 219 EP - 228 SN - 00933813 AB - A 3-D finite-difference time-domain analysis of a photoconductive-semiconductor-switch-based terahertz (THz) source, integrated with a standard dipole and a large-aperture radiator, is presented. The simulation analysis is based on the coupling of semiconductor equations for charge transport with Maxwell electromagnetic equations. The simulation provides the transient field redistribution, carrier generation characteristics, and the field acceleration as a result of the bias voltage on the device, contributing to the nonlinear behavior of THz-pulse generation. A comparison of the radiation characteristics of the two antenna types shows that the large-aperture antenna produces approximately three times higher radiation amplitude and broader power spectrum than those produced by the dipole antenna. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOCONDUCTIVITY KW - ELECTRIC conductivity KW - TERAHERTZ technology KW - SEMICONDUCTOR-metal boundaries KW - DIPOLE moments KW - ANTENNAS (Electronics) N1 - Accession Number: 50995362; Source Information: Jan2009, Vol. 37 Issue 1, p219; Subject Term: PHOTOCONDUCTIVITY; Subject Term: ELECTRIC conductivity; Subject Term: TERAHERTZ technology; Subject Term: SEMICONDUCTOR-metal boundaries; Subject Term: DIPOLE moments; Subject Term: ANTENNAS (Electronics); Subject Term: ; Number of Pages: 10p; ; Document Type: Article; L3 - 10.1109/TPS.2008.2006978 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=50995362&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Weinstein, James L. AU - Martin, Katie S. AU - Ferris, Ann M. T1 - Household Food Security Varies Within Month and is Related to Childhood Anemia. JO - Journal of Hunger & Environmental Nutrition JF - Journal of Hunger & Environmental Nutrition Y1 - 2009/01// VL - 4 IS - 1 M3 - Article SP - 48 EP - 61 PB - Taylor & Francis Ltd SN - 19320248 AB - We measured food security (FS) and evaluated the impact of varying household FS on anemia in 24-month-old to 60-month-old children via hemoglobin measurement, chart review, home visits 3 times per month, and the Household Food Security Scale (HFSS). Over one third (38%) of families were food insecure in the prior year, and 37% of children recently anemic. Children in food insecure families were more likely to be anemic (odds ratio = 6.14, [95% CI = 2.09-18.05], p < .01). Children in families with worsening food insecurity (1-2 points) were more likely to be anemic (odds ratio = 32.6, [95% CI = 4.56-232.94], p < .01). This links variability in food insecurity to anemia and negative health outcomes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Hunger & Environmental Nutrition is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Public health KW - Food supply KW - HEALTH KW - Nutrition KW - Anemia in children KW - Households KW - Poor people KW - Medical care KW - Children KW - Iron deficiency anemia in children KW - anemia KW - food insecurity KW - low-income N1 - Accession Number: 37155118; Weinstein, James L. 1; Martin, Katie S. 2; Ferris, Ann M. 3; Email Address: aferris@uchc.edu; Affiliations: 1: University of Connecticut and US Air Force Academy, Colorado Springs, Colorado, USA; 2: University of Connecticut, Center for Public Health and Health Policy, East Hartford, Connecticut, USA; 3: Center for Public Health and Health Policy and University of Connecticut Health Center, Farmington, Connecticut, USA; Issue Info: 2009, Vol. 4 Issue 1, p48; Thesaurus Term: Public health; Thesaurus Term: Food supply; Thesaurus Term: HEALTH; Thesaurus Term: Nutrition; Subject Term: Anemia in children; Subject Term: Households; Subject Term: Poor people; Subject Term: Medical care; Subject Term: Children; Subject Term: Iron deficiency anemia in children; Author-Supplied Keyword: anemia; Author-Supplied Keyword: food insecurity; Author-Supplied Keyword: low-income; NAICS/Industry Codes: 814110 Private Households; NAICS/Industry Codes: 525120 Health and Welfare Funds; Number of Pages: 14p; Illustrations: 3 Charts; Document Type: Article L3 - 10.1080/19320240802706833 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=37155118&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - CHAP ID - 2008-14481-008 AN - 2008-14481-008 AU - Pilch, Frances T. ED - Totten, Samuel ED - Totten, Samuel, (Ed) T1 - Rape as genocide. T2 - Plight and fate of women during and following genocide. T3 - Genocide: A critical bibliographic review; Vol 7 Y1 - 2009/// VL - 7 SP - 169 EP - 182 CY - Piscataway, NJ, US PB - Transaction Publishers SN - 978-1-4128-0827-9 N1 - Accession Number: 2008-14481-008. Partial author list: First Author & Affiliation: Pilch, Frances T.; US Air Force Academy, US. Release Date: 20090706. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-1-4128-0827-9, Hardcover. Language: English. Major Descriptor: Adjudication; Criminal Behavior; Genocide; Rape; Violence. Minor Descriptor: Laws; Perpetrators; Victimization. Classification: Social Processes & Social Issues (2900). Population: Human (10); Male (30); Female (40). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 14. AB - The concept of rape as genocide began to emerge in the 1990s, when the systematic use of rape during the conflict in the former Yugoslavia was used as an instrument to attack both individual women and the groups to which they belonged. The combination of the rising importance of non-governmental organizations, enhanced communications through new technology, and the formation of the ad hoc tribunals created to address crimes in the former Yugoslavia and Rwanda also served to generate a deepened concern about the role of rape in the destruction of communities. This understanding of the role of sexual violence in genocide found legal expression in the groundbreaking Akayesu decision at the International Criminal Tribunal for Rwanda (ICTR). While rape and genocide have been linked in scholarly discourse, particularly in feminist interpretations of recent conflicts, the legal linkage did not appear until relatively recently (1998). Problems still remain in the acceptance of a definition of rape, and, as noted above, rape continues to be used as a weapon against specific populations in current conflicts, despite some advances in promoting culpability of perpetrators, both in international and domestic law. The fact that the International Criminal Court is not universally supported creates a problem for advancement of legal interpretations of rape and genocide. The strength of human rights advocacy groups should increasingly serve to discredit the use of sexual violence to destroy groups and their cultures and to raise awareness of continued use of rape as a weapon designed to break down community cohesiveness. Rape as genocide continues to be a problem in contemporary international affairs that will need to be addressed on multiple fronts, through the law, education, and advocacy. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - rape KW - genocide KW - crime KW - sexual violence KW - legal processes KW - criminal processes KW - International Criminal Court KW - victimization KW - perpetration KW - 2009 KW - Adjudication KW - Criminal Behavior KW - Genocide KW - Rape KW - Violence KW - Laws KW - Perpetrators KW - Victimization KW - 2009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-14481-008&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 105603563 T1 - Hereditary colorectal cancer syndromes and the role of the surgical oncologist. AU - Learn PA AU - Kahlenberg MS Y1 - 2009/01//2009 Jan N1 - Accession Number: 105603563. Language: English. Entry Date: 20090320. Revision Date: 20150711. Publication Type: Journal Article; review; tables/charts. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Oncologic Care; Perioperative Care. NLM UID: 9211789. KW - Colorectal Neoplasms KW - Neoplastic Syndromes, Hereditary KW - Oncology KW - Physician's Role KW - Surgeons KW - Adenomatous Polyposis Coli KW - Colorectal Neoplasms -- Familial and Genetic KW - Colorectal Neoplasms -- Prevention and Control KW - Counseling KW - Genetics KW - Peutz-Jeghers Syndrome KW - Peutz-Jeghers Syndrome -- Prevention and Control SP - 121 EP - 144 JO - Surgical Oncology Clinics of North America JF - Surgical Oncology Clinics of North America JA - SURG ONCOL CLIN NORTH AM VL - 18 IS - 1 CY - Philadelphia, Pennsylvania PB - W B Saunders AB - The expanding understanding of the genetic basis to hereditary colon cancer syndromes is dismantling previously conceived categorizations and shedding light on why those schemes often failed in past. This review highlights evolving concepts regarding the genetic diagnosis and clinical management of the more commonly inherited colorectal cancer syndromes, including a discussion of recently described familial syndromes. This review also addresses clinician responsibilities in recognition of familial syndromes and provision of counseling. Copyright © 2009 by Elsevier Science (USA). SN - 1055-3207 AD - Department of Surgery, University of Texas Health Science Center at San Antonio 7703 Floyd Curl Drive, San Antonio, Texas 78229, USA; Wilford Hall United States Air Force Medical Center, 2200 Bergquist Drive, Suite 1, Lackland AFB, Texas 78236, USA. U2 - PMID: 19056045. DO - 10.1016/j.soc.2008.08.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105603563&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - CHAP ID - 2009-11133-009 AN - 2009-11133-009 AU - Singh, Vikramjit AU - Walther, Brandon AU - Wood, Kristin L. AU - Jensen, Dan ED - Markman, Arthur B. ED - Wood, Kristin L. ED - Markman, Arthur B., (Ed) ED - Wood, Kristin L., (Ed) T1 - Innovation through tRaNsFoRmAtIoNaL design. T2 - Tools for innovation: The science behind the practical methods that drive new ideas. Y1 - 2009/// SP - 171 EP - 194 CY - New York, NY, US PB - Oxford University Press SN - 978-0-19-538163-4 N1 - Accession Number: 2009-11133-009. Partial author list: First Author & Affiliation: Singh, Vikramjit; M.O.R.P.H. Lab, Manufacturing and Design Research Laboratory, Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, US. Release Date: 20090921. Correction Date: 20120618. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-0-19-538163-4, Hardcover. Language: English. Grant Information: Singh, Vikramjit. Major Descriptor: Creativity; Engineers; Innovation; Methodology; Product Design. Minor Descriptor: Experimentation; Ideation; Problem Solving; Reasoning; Technology. Classification: Cognitive Processes (2340). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 24. AB - The history of mankind is a testament of how we encounter and solve problems. No matter how mundane a task, at one extreme, or complicated a task, at the other, we constantly innovate to solve problems. Innovation is a process that leads to improvements in technology, methods, and our human existence. In engineering, innovation entails the use of tools and processes that enhance the benefits of existing sciences and technologies. These enhancements, in turn, lead to benefits to societal and individual needs. Without innovation, we lose our identity, our ability to adapt, and our motivation to cause change. Innovation is a constant course of action that allows for the expression of creativity, personality, and discovery. Engineering methods and tools are used to solve real-world problems, whether we are exploring the endless reaches of space or inflating a bike tire. This chapter describes novel tools in engineering design to enhance and empower creativity, and cause the ideation process to move forward. The goal of this chapter is primarily to introduce a developing methodology for design engineers to use in the advancement of mechanical transforming devices. This methodology provides a 'snapshot' of how innovation processes can be improved through the use of analogical reasoning and the use of design principles; i.e., meta-analogies. The development of a systematic and methodological approach for identifying transformations in a device is based on a relational view of system-usage scenarios, respective customer needs, and system-level solutions relating to the needs. This area of transformational design is rich with possibilities to create systems that have neither been contemplated nor even dreamed of in the human experience. This chapter first introduces the topic of transformers and evaluates the motivation for this research. A brief description of the research approach is included, followed by a description of transformational principles and facilitators that are a driving force for this methodology. The chapter then moves step-by-step through the current iteration of the method in detail and concludes with a novel application of transformation applied to everyday systems. In a local context, this chapter seeks to develop a theoretical basis by which transformer design may be wielded by practicing designers. In the larger landscape, however, this paper illustrates a principled approach for ideation with directed methods. This approach is intended to provide a meta-analogy framework by which designers explore solutions that overcome psychological inertia and provide solution paths that are outside the designer's set of experiences. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - innovation KW - transformational design KW - tools KW - engineering design KW - creativity KW - ideation KW - methodology KW - engineers KW - mechanical transforming devices KW - analogical reasoning KW - design principles KW - meta-analogy KW - transformers KW - research KW - solutions KW - problem solving KW - 2009 KW - Creativity KW - Engineers KW - Innovation KW - Methodology KW - Product Design KW - Experimentation KW - Ideation KW - Problem Solving KW - Reasoning KW - Technology KW - 2009 U1 - Sponsor: Cullen Endowed Professorship in Engineering. Recipients: Singh, Vikramjit; Walther, Brandon; Wood, Kristin L.; Jensen, Dan U1 - Sponsor: University of Texas at Austin, US. Recipients: Singh, Vikramjit; Walther, Brandon; Wood, Kristin L.; Jensen, Dan U1 - Sponsor: Air Force Research Laboratory, Munitions Directorate, US. Recipients: Singh, Vikramjit; Walther, Brandon; Wood, Kristin L.; Jensen, Dan U1 - Sponsor: US Air Force Office of Scientific Research, US. Recipients: Singh, Vikramjit; Walther, Brandon; Wood, Kristin L.; Jensen, Dan U1 - Sponsor: National Science Foundation. Grant: CMMI-0555851. Recipients: Singh, Vikramjit; Walther, Brandon; Wood, Kristin L.; Jensen, Dan DO - 10.1093/acprof:oso/9780195381634.003.0009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-11133-009&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Ahamed, Maqusood AU - Karns, Michael AU - Goodson, Michael AU - Rowe, John AU - Hussain, Saber M. AU - Schlager, John J. AU - Hong, Yiling T1 - DNA damage response to different surface chemistry of silver nanoparticles in mammalian cells JO - Toxicology & Applied Pharmacology JF - Toxicology & Applied Pharmacology Y1 - 2008/12/15/ VL - 233 IS - 3 M3 - Article SP - 404 EP - 410 SN - 0041008X AB - Abstract: Silver nanoparticles (Ag NPs) have recently received much attention for their possible applications in biotechnology and life sciences. Ag NPs are of interest to defense and engineering programs for new material applications as well as for commercial purposes as an antimicrobial. However, little is known about the genotoxicity of Ag NPs following exposure to mammalian cells. This study was undertaken to examine the DNA damage response to polysaccharide surface functionalized (coated) and non-functionalized (uncoated) Ag NPs in two types of mammalian cells; mouse embryonic stem (mES) cells and mouse embryonic fibroblasts (MEF). Both types of Ag NPs up-regulated the cell cycle checkpoint protein p53 and DNA damage repair proteins Rad51 and phosphorylated-H2AX expression. Furthermore both of them induced cell death as measured by the annexin V protein expression and MTT assay. Our observations also suggested that the different surface chemistry of Ag NPs induce different DNA damage response: coated Ag NPs exhibited more severe damage than uncoated Ag NPs. The results suggest that polysaccharide coated particles are more individually distributed while agglomeration of the uncoated particles limits the surface area availability and access to membrane bound organelles. [Copyright &y& Elsevier] AB - Copyright of Toxicology & Applied Pharmacology is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DNA damage KW - Silver KW - Polysaccharides KW - Apoptosis KW - Surface chemistry KW - Biotechnology KW - Anti-infective agents KW - Genetic toxicology KW - Nanoparticles KW - Lipocortins KW - Genotoxicity KW - Mammalian cells KW - Silver nanoparticles N1 - Accession Number: 35392854; Ahamed, Maqusood 1; Karns, Michael 1; Goodson, Michael 1; Rowe, John 1; Hussain, Saber M. 2; Schlager, John J. 2; Hong, Yiling 1; Email Address: Yiling.Hong@notes.udayton.edu; Affiliations: 1: Department of Biology, Centre for Tissue Regeneration and Engineering, University of Dayton, Dayton-45469, OH, USA; 2: Applied Biotechnology Branch, Human Effectiveness Directorate Air Force Research Laboratory/HEPB, Wright-Patterson Air Force Base-45433, OH, USA; Issue Info: Dec2008, Vol. 233 Issue 3, p404; Thesaurus Term: DNA damage; Thesaurus Term: Silver; Thesaurus Term: Polysaccharides; Thesaurus Term: Apoptosis; Thesaurus Term: Surface chemistry; Thesaurus Term: Biotechnology; Thesaurus Term: Anti-infective agents; Thesaurus Term: Genetic toxicology; Subject Term: Nanoparticles; Subject Term: Lipocortins; Author-Supplied Keyword: Genotoxicity; Author-Supplied Keyword: Mammalian cells; Author-Supplied Keyword: Silver nanoparticles; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.taap.2008.09.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=35392854&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Weller, Grant T. T1 - The Day of Battle: The War in Sicily and Italy, 1943-1944. JO - Air Power History JF - Air Power History J1 - Air Power History PY - 2008///Winter2008 Y1 - 2008///Winter2008 VL - 55 IS - 4 M3 - Book Review SP - 58 EP - 58 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "The Day of Battle: The War in Sicily and Italy, 1943-1944," by Rick Atkinson. KW - DAY of Battle: The War in Sicily & Italy 1943-1944, The (Book) KW - ATKINSON, Rick, 1952- KW - WORLD War, 1939-1945 KW - NONFICTION N1 - Accession Number: 36024862; Source Information: Winter2008, Vol. 55 Issue 4, p58; Subject Term: DAY of Battle: The War in Sicily & Italy 1943-1944, The (Book); Subject Term: ATKINSON, Rick, 1952-; Subject Term: WORLD War, 1939-1945; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 1/2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=36024862&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Smith, Jeffrey S. AU - Tuttle, M. H. T1 - DOES DEFENSE SPENDING REALLY PROMOTE AGGREGATE OUTPUT IN THE UNITED STATES? JO - Defence & Peace Economics JF - Defence & Peace Economics Y1 - 2008/12// VL - 19 IS - 6 M3 - Article SP - 435 EP - 447 SN - 10242694 AB - Many studies have examined the relationship between defense spending and growth in real aggregate output with mixed results. Most recently, Atesoglu (2002) finds a positive relationship between defense spending and output. Capturing the error correction term as the long run adjustment parameter and including the long run adjustment in the relationship, we do not find evidence that defense spending promotes growth in real output. Instead, defense spending responds to aggregate income shocks. We re-estimated the relationship and dummied all US military conflicts with similar results concerning military spending's effect on output. Interestingly, we find trade-offs between defense and non-defense government spending during war time. [ABSTRACT FROM AUTHOR] AB - Copyright of Defence & Peace Economics is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY spending KW - UNITED States -- Armed Forces -- Appropriations & expenditures KW - MILITARY policy KW - WAR on Terrorism, 2001-2009 KW - UNITED States -- Military history -- 21st century KW - UNITED States KW - Aggregate output KW - Cointegration KW - Defense spending KW - Military conflicts KW - Vector error correction model N1 - Accession Number: 35325479; Smith, Jeffrey S. 1; Email Address: jeffrey.smith@usafa.edu; Tuttle, M. H. 2; Email Address: mht001@shsu.edu; Affiliations: 1: Department of Economics and Geosciences, United States Air Force Academy, USAFA CO 80840, USA; 2: Sam Houston State University, Huntsville, TX 77341-2118, USA; Issue Info: Dec2008, Vol. 19 Issue 6, p435; Thesaurus Term: MILITARY spending; Subject Term: UNITED States -- Armed Forces -- Appropriations & expenditures; Subject Term: MILITARY policy; Subject Term: WAR on Terrorism, 2001-2009; Subject Term: UNITED States -- Military history -- 21st century; Subject: UNITED States; Author-Supplied Keyword: Aggregate output; Author-Supplied Keyword: Cointegration; Author-Supplied Keyword: Defense spending; Author-Supplied Keyword: Military conflicts; Author-Supplied Keyword: Vector error correction model; Number of Pages: 13p; Illustrations: 7 Charts, 2 Graphs; Document Type: Article L3 - 10.1080/10242690701701950 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=35325479&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Grosjean, Dennis F. AU - Schweickart, Daniel L. T1 - Development of Procedures for Partial Discharge Measurements at Low Pressures in Air, Argon and Helium. JO - IEEE Transactions on Dielectrics & Electrical Insulation JF - IEEE Transactions on Dielectrics & Electrical Insulation J1 - IEEE Transactions on Dielectrics & Electrical Insulation PY - 2008/12// Y1 - 2008/12// VL - 15 IS - 6 M3 - Article SP - 1535 EP - 1543 SN - 10709878 AB - Partial discharge (PD) characteristics in air, argon and helium at pressures between 101 kPa (760 Torr) to about 0.27 kPa (2 Torr) under 60 Hz ac energization were studied with various electrode arrangements. Measurements are presented for two representative electrode configurations, (1) needle-plane, with 20 mm spacing and a dielectric barrier, and (2) a twisted pair of insulated conductors. Typical PD current- pulse waveforms are presented. Difficulties in adhering to measurement guidelines defined by the IEC 60270 standard are described, and suggested modifications of the standard procedures are presented for measurement and calibration for low-pressure PD. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Dielectrics & Electrical Insulation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC discharges KW - AIR KW - ARGON KW - HELIUM KW - ELECTRODES KW - ELECTROSTATICS KW - ELECTRICAL engineering N1 - Accession Number: 35718774; Source Information: Dec2008, Vol. 15 Issue 6, p1535; Subject Term: ELECTRIC discharges; Subject Term: AIR; Subject Term: ARGON; Subject Term: HELIUM; Subject Term: ELECTRODES; Subject Term: ELECTROSTATICS; Subject Term: ELECTRICAL engineering; Subject Term: ; Number of Pages: 9p; ; Illustrations: 5 Black and White Photographs, 8 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=35718774&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kingston, Derek AU - Beard, Randal W. AU - Holt, Ryan S. T1 - Decentralized Perimeter Surveillance Using a Team of UAVs. JO - IEEE Transactions on Robotics JF - IEEE Transactions on Robotics J1 - IEEE Transactions on Robotics PY - 2008/12// Y1 - 2008/12// VL - 24 IS - 6 M3 - Article SP - 1394 EP - 1404 SN - 15523098 AB - This paper poses the cooperative perimeter-surveillance problem and offers a decentralized solution that accounts for perimeter growth (expanding or contracting) and insertion/deletion of team members. By identifying and sharing the critical coordination information and by exploiting the known communication topology, only a small communication range is required for accurate performance. Simulation and hardware results are presented that demonstrate the applicability of the solution. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Robotics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - TOPOLOGY KW - ELECTRONIC surveillance KW - REMOTELY piloted vehicles KW - REMOTE control KW - ROBOTICS N1 - Accession Number: 36096761; Source Information: Dec2008, Vol. 24 Issue 6, p1394; Subject Term: ALGORITHMS; Subject Term: TOPOLOGY; Subject Term: ELECTRONIC surveillance; Subject Term: REMOTELY piloted vehicles; Subject Term: REMOTE control; Subject Term: ROBOTICS; Subject Term: ; Number of Pages: 11p; ; Illustrations: 3 Black and White Photographs, 6 Diagrams, 4 Graphs; ; Document Type: Article; L3 - 10.1109/TRO.2008.2007935 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=36096761&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Carrell, Scott E. AU - Malmstrom, Frederick V. AU - West, James E. AD - U CA, Davis AD - Center for Character Development, US Air Force Academy, Colorado Springs AD - US Air Force Academy, Colorado Springs T1 - Peer Effects in Academic Cheating JO - Journal of Human Resources JF - Journal of Human Resources Y1 - 2008///Winter VL - 43 IS - 1 SP - 173 EP - 207 SN - 0022166X N1 - Accession Number: 0953475; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 200802 N2 - Using self-reported academic cheating from the classes of 1959 through 2002 at the three major United States military service academies (Air Force, Army, and Navy), we measure how peer cheating influences individual cheating behavior. We find higher levels of peer cheating result in a substantially increased probability that an individual will cheat. One additional college student who cheated in high school drives approximately 0.33 to 0.47 additional college students to cheat. One additional college cheater drives approximately 0.61 to 0.75 additional college students to cheat. These results imply, in equilibrium, the social multiplier for academic cheating is approximately three. KW - Analysis of Education I21 L3 - http://jhr.uwpress.org/content/by/year UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0953475&site=ehost-live&scope=site UR - http://jhr.uwpress.org/content/by/year DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Cook, Martin L. T1 - Torture: When the Unthinkable Is Morally Permissible. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College J1 - Parameters: U.S. Army War College PY - 2008///Winter2008 Y1 - 2008///Winter2008 VL - 38 IS - 4 M3 - Book Review SP - 135 EP - 137 SN - 00311723 AB - The article reviews the book "Torture: When the Unthinkable Is Morally Permissible," by Mirko Bagaric and Julie Clarke. KW - TORTURE: When the Unthinkable Is Morally Permissible (Book) KW - BAGARIC, Mirko KW - CLARKE, Julie KW - TORTURE KW - NONFICTION N1 - Accession Number: 36911716; Source Information: Winter2008, Vol. 38 Issue 4, p135; Subject Term: TORTURE: When the Unthinkable Is Morally Permissible (Book); Subject Term: BAGARIC, Mirko; Subject Term: CLARKE, Julie; Subject Term: TORTURE; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=36911716&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Dalal, Kimberly Moore AU - Antonescu, Cristina R. AU - DeMatteo, Ronald P. AU - Maki, Robert G. T1 - EBV-Associated Smooth Muscle Neoplasms: Solid Tumors Arising in the Presence of Immunosuppression and Autoimmune Diseases. JO - Sarcoma JF - Sarcoma Y1 - 2008/12// M3 - Article SP - 1 EP - 6 PB - Hindawi Publishing Corporation SN - 1357714X AB - Background. Epstein-Barr virus (EBV)-related smooth muscle neoplasms (SMNs) have been associated with immune dysregulation, most notably in patients who have undergone solid organ transplantation or in patients with HIV/AIDS. Objective. to report our experience with EBV-related neoplasms as well as describing the first EBV-related SMN in the setting of administration of glucocorticoids and the tumor necrosis factor inhibitor etanercept. Design. We have case reports, of minimum 3-year follow-up, 2002-2005. Setting. It was held in an academic and tertiary referral cancer center. Patients. Patients are with dysregulated immunity after solid organ transplantation, HIV/AIDS, or with psoriasis after treatment with etanercept. Interventions. There were discontinuation of etanercept, right hepatic trisegmentectomy, and chemotherapy.Measurements.We use survival as a measurement here. Results. Patients who were able to withstand reduction in immunosuppression survived. Surgical resection or chemotherapy was successful in delaying progression of disease. Limitations. There was a relatively short follow-up for these slow-growing neoplasms. Conclusion. EBV-related SMNs have variable aggressiveness.While chemotherapymay slow disease progression, resection and improving the host immune status provide the best opportunity for primary tumor control. [ABSTRACT FROM AUTHOR] AB - Copyright of Sarcoma is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPSTEIN-Barr virus KW - SMOOTH muscle -- Tumors KW - GLUCOCORTICOIDS KW - IMMUNOSUPPRESSION KW - AUTOIMMUNE diseases KW - TRANSPLANTATION of organs, tissues, etc. KW - IMMUNITY N1 - Accession Number: 38119537; Dalal, Kimberly Moore 1,2,3; Antonescu, Cristina R. 4; DeMatteo, Ronald P. 1; Maki, Robert G. 5; Email Address: makir@mskcc.org; Source Information: 2008, p1; Subject: EPSTEIN-Barr virus; Subject: SMOOTH muscle -- Tumors; Subject: GLUCOCORTICOIDS; Subject: IMMUNOSUPPRESSION; Subject: AUTOIMMUNE diseases; Subject: TRANSPLANTATION of organs, tissues, etc.; Subject: IMMUNITY; Number of Pages: 6p; Illustrations: 1 Color Photograph, 1 Black and White Photograph, 1 Chart; Document Type: Article L3 - 10.1155/2008/859407 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=38119537&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 2009-11607-001 AN - 2009-11607-001 AU - Gluck, Kevin AU - Bello, Paul AU - Busemeyer, Jerome T1 - Introduction to the special issue. JF - Cognitive Science JO - Cognitive Science JA - Cogn Sci Y1 - 2008/12/01/ VL - 32 IS - 8 SP - 1245 EP - 1247 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0364-0213 SN - 1551-6709 AD - Gluck, Kevin, Air Force Research Laboratory, 6030 S. Kent St., Mesa, AZ, US, 85212 N1 - Accession Number: 2009-11607-001. PMID: 21585452 Partial author list: First Author & Affiliation: Gluck, Kevin; Air Force Research Laboratory, Mesa, AZ, US. Other Publishers: Elsevier Science; Lawrence Erlbaum; Taylor & Francis. Release Date: 20090921. Correction Date: 20120611. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Cognition; Mathematical Modeling; Stochastic Modeling; Computational Modeling. Minor Descriptor: Cognitive Science. Classification: Statistics & Mathematics (2240); Cognitive Processes (2340). Page Count: 3. Issue Publication Date: Dec 1, 2008. Copyright Statement: All rights reserved. Cognitive Science Society, Inc. 2008. AB - All cognitive modelers sooner or later (usually sooner) run headlong into fundamental issues associated with comparing and selecting alternative models and with evaluating the validity of the models that have been developed. We developed this special issue around the theme of model comparison to highlight the critical importance of these topics for ongoing progress in cognitive science. What are the different methods by which one can compare two or more models in terms of their capacity to explain a set of experimental findings? Can these models be empirically distinguished in terms of their qualitative or quantitative predictions? What are the prospects for making direct comparisons across statistical, mathematical, and computational modeling approaches? How does the focus of comparisons differ across modeling approaches, and what value might the best practices of one of these modeling communities have for the others? How should we deal with the complex interplay of issues such as the breadth and depth of explanatory mechanisms, parsimony, plausibility, precision, and accuracy within and across modeling approaches? Without clear answers to these questions, how can our science measure its progress? We have assembled a collection of articles that address some of these and other important questions. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - computational modeling KW - statistical modeling KW - mathematical modeling KW - model comparison KW - cognition KW - cognitive science KW - 2008 KW - Cognition KW - Mathematical Modeling KW - Stochastic Modeling KW - Computational Modeling KW - Cognitive Science KW - 2008 DO - 10.1080/03640210802473582 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-11607-001&site=ehost-live&scope=site UR - kevin.gluck@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Inoyama, Daisaku AU - Sanders, Brian P. AU - Joo, James J. T1 - Topology Optimization Approach for the Determination of the Multiple-Configuration Morphing Wing Structure. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2008/11//Nov/Dec2008 Y1 - 2008/11//Nov/Dec2008 VL - 45 IS - 6 M3 - Article SP - 1853 EP - 1853 SN - 00218669 AB - The paper introduces an innovative topology optimization approach for determining the distribution of structural properties and actuators to design a morphing wing that is capable of achieving multiple target shapes. The previous investigation by the authors demonstrated, using various problem formulations and a novel modeling concept, the fundamental topology synthesis of a simple two-configuration morphing wing structure. The primary objective of the present investigation is therefore to introduce improvements and extensions to the previous concepts and problem formulations to those capable of accommodating the multiple-configuration definitions. The investigation includes the formulation of appropriate topology optimization problems and the development of effective modeling concepts. In addition, principal issues on the external load dependency and the reversibility of a design, as well as the appropriate selection of a reference configuration, are addressed in the investigation. The methodology to control actuator distributions and concentrations is also discussed. Finally, an example multiple-configuration problem that portrays the generic surveillance mission is solved to demonstrate the potential capabilities of the approach. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings -- Design & construction KW - MATHEMATICAL optimization KW - TOPOLOGY KW - LINEAR algebras KW - AUTOMATIC control KW - ACTUATORS N1 - Accession Number: 35664830; Source Information: Nov/Dec2008, Vol. 45 Issue 6, p1853; Subject Term: AIRPLANE wings -- Design & construction; Subject Term: MATHEMATICAL optimization; Subject Term: TOPOLOGY; Subject Term: LINEAR algebras; Subject Term: AUTOMATIC control; Subject Term: ACTUATORS; Subject Term: ; Number of Pages: 1p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=35664830&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Hajj, Muhammad R. AU - Beran, Philip S. T1 - Higher-Order Spectral Analysis of Limit Cycle Oscillations of Fighter Aircraft. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2008/11//Nov/Dec2008 Y1 - 2008/11//Nov/Dec2008 VL - 45 IS - 6 M3 - Article SP - 1917 EP - 1917 SN - 00218669 AB - Higher-order spectral analysis is implemented to identify quadratic and cubic nonlinear aeroelastic phenomena associated with limit cycle oscillations encountered in a specific F-16 flight-test maneuver that consists of a straight and level flight followed by a windup turn at a Mach number near 0.95 and an altitude of 10,000 ft. The results show that nonlinear manifestations of the limit cycle oscillations are most prominent at the forward locations on the wing-tip and underwing launchers. Physical explanations of identified nonlinearities and relations to vibration modes of the different components are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - AERODYNAMICS KW - VIBRATION (Mechanics) KW - OSCILLATIONS KW - F-16 (Jet fighter plane) -- Design & construction KW - MACH number N1 - Accession Number: 35664836; Source Information: Nov/Dec2008, Vol. 45 Issue 6, p1917; Subject Term: AEROELASTICITY; Subject Term: AERODYNAMICS; Subject Term: VIBRATION (Mechanics); Subject Term: OSCILLATIONS; Subject Term: F-16 (Jet fighter plane) -- Design & construction; Subject Term: MACH number; Subject Term: ; Number of Pages: 1p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=35664836&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Dogan, Atilla AU - Lewis, Timothy A. AU - Blake, William T1 - Flight Data Analysis and Simulation of Wind Effects During Aerial Refueling. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2008/11//Nov/Dec2008 Y1 - 2008/11//Nov/Dec2008 VL - 45 IS - 6 M3 - Article SP - 2036 EP - 2036 SN - 00218669 AB - This paper presents an analysis of data obtained in an automated aerial refueling test flight conducted with a KC- 135 as the tanker and a Learjet 25 as the surrogate receiver unmanned aerial vehicle. The purpose is to identify the wind induced by the tanker wake and its effect on the receiver aircraft. From the available flight data, a direct computation of the winds experienced by the tanker and receiver is carried out. The mean variation of the receiver wind is compared with the tanker wind when the receiver is at the observation and contact positions. This results in the identification of the wake-induced wind. A spectrum analysis is conducted to characterize the turbulence and to identify the pilot effects. The paper also presents methods used to model 1) prevailing wind, 2) wake-vortex-induced wind, and 3) turbulence as the three sources of wind that the aircraft are exposed to and the approach used for incorporating the wind effect into the dynamic simulation of the aircraft. The test flight is simulated in various cases with different turbulence models and flight controllers. The simulation results are analyzed and compared with the flight data in terms of the power spectral densities and mean variations to validate the wind and turbulence modeling techniques. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES -- Air refueling KW - KC-135 (Tanker aircraft) KW - MILITARY jets KW - AERODYNAMIC noise KW - TURBULENCE KW - BOUNDARY layer control N1 - Accession Number: 35664847; Source Information: Nov/Dec2008, Vol. 45 Issue 6, p2036; Subject Term: AIRPLANES -- Air refueling; Subject Term: KC-135 (Tanker aircraft); Subject Term: MILITARY jets; Subject Term: AERODYNAMIC noise; Subject Term: TURBULENCE; Subject Term: BOUNDARY layer control; Subject Term: ; Number of Pages: 1p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=35664847&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Lee, J.-H. AU - Wu, C.-Y. AU - Wysocki, K. M. AU - Farrah, S. AU - Wander, J. T1 - Efficacy of iodine-treated biocidal filter media against bacterial spore aerosols. JO - Journal of Applied Microbiology JF - Journal of Applied Microbiology Y1 - 2008/11// VL - 105 IS - 5 M3 - Article SP - 1318 EP - 1326 PB - Wiley-Blackwell SN - 13645072 AB - Aims: To assess the effectiveness of iodine-treated biocidal filter media against bacterial spore aerosols. Methods and Results: Bacillus subtilis spores were aerosolized and introduced into a filtration system. Both treated and untreated filters exhibited high viable removal efficiency (>99·996%) with negligible variation in pressure drop during the entire experiment. The viability of collected spores on the filter was investigated by enumeration of spores extracted from the filter by vortexing. At room temperature and low relative humidity (RH), the survival fraction of the treated filter was significantly lower than that of the untreated filter ( P-value < 0·05). Meanwhile, at room temperature and high RH and at high temperature and high RH, the survival fractions on the treated medium were statistically the same as the untreated control at room temperature and low RH. Conclusions: Both treated and untreated filters achieved excellent viable removal efficiency for spores. The pressure drop of the treated filter was not affected by the iodine treatment. The viability of collected bacterial spores was decreased because of the exertion of iodine disinfectant. Significance and Impact of the Study: The evaluation demonstrates that the iodine-treated filter is a viable medium for respiratory protection against infectious spore aerosols. The results warrant further evaluation of smaller biological agents, which exhibit higher penetration. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Microbiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Bacterial spores KW - Aerosols (Sprays) KW - Air filters KW - Filters & filtration KW - Air -- Purification KW - Respiratory infections KW - bio-aerosol KW - filtration efficiency KW - iodine KW - spore KW - viability N1 - Accession Number: 34767805; Lee, J.-H. 1; Wu, C.-Y. 1; Email Address: cywu@ufl.edu; Wysocki, K. M. 2; Farrah, S. 3; Wander, J. 4; Affiliations: 1: Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL, USA; 2: Department of Chemical Engineering, University of Florida, Gainesville, FL, USA; 3: Department of Microbiology and Cell Sciences, University of Florida, Gainesville, FL, USA; 4: Airbase Technologies Division, Air Force Research Laboratory, Tyndall Air Force Base, FL, USA; Issue Info: Nov2008, Vol. 105 Issue 5, p1318; Thesaurus Term: Bacterial spores; Thesaurus Term: Aerosols (Sprays); Thesaurus Term: Air filters; Thesaurus Term: Filters & filtration; Thesaurus Term: Air -- Purification; Subject Term: Respiratory infections; Author-Supplied Keyword: bio-aerosol; Author-Supplied Keyword: filtration efficiency; Author-Supplied Keyword: iodine; Author-Supplied Keyword: spore; Author-Supplied Keyword: viability; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; Number of Pages: 9p; Illustrations: 2 Diagrams, 2 Charts, 2 Graphs; Document Type: Article L3 - 10.1111/j.1365-2672.2008.03855.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=34767805&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 105575765 T1 - Cast modification for immediate complete dentures: traditional and contemporary considerations with an introduction of spatial modeling. AU - Phoenix RD AU - Fleigel JD Y1 - 2008/11// N1 - Accession Number: 105575765. Language: English. Entry Date: 20090306. Revision Date: 20150711. Publication Type: Journal Article; tables/charts. Journal Subset: Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Dental Care. NLM UID: 0376364. KW - Dental Models KW - Denture, Complete -- Classification KW - Dentures KW - Models, Biological SP - 399 EP - 405 JO - Journal of Prosthetic Dentistry JF - Journal of Prosthetic Dentistry JA - J PROSTHET DENT VL - 100 IS - 5 CY - New York, New York PB - Elsevier Science SN - 0022-3913 AD - Prosthodontics Resident Education, United States Air Force Graduate Prosthodontics Residency Program, Lackland Air Force Base, Texas 78236-5345, USA; ambp56@aol.com U2 - PMID: 18992574. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105575765&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - GEN AU - VARGISH, THOMAS T1 - War and Literature: A Reciprocity. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2008/11// Y1 - 2008/11// VL - 20 IS - 1/2 M3 - Essay SP - 19 EP - 23 PB - US Air Force Academy English Department SN - 10466967 AB - An essay is presented examining the value of studying literature for the training of officers in modern armed forces. The military themes present in works such as Homer's "The Iliad," Ernest Hemingway's "A Farewell to Arms," and William Shakespeare's "Hamlet," are discussed, pointing out the direct value of literature and the Humanities as a training tool for soldiers. KW - ESSAY (Literary form) KW - WAR & literature KW - LITERATURE -- Study & teaching KW - MILITARY officers -- Training of KW - ILIAD of Homer KW - COMMAND of troops -- Study & teaching N1 - Accession Number: 36986958; Source Information: 2008, Vol. 20 Issue 1/2, p19; Subject Term: ESSAY (Literary form); Subject Term: WAR & literature; Subject Term: LITERATURE -- Study & teaching; Subject Term: MILITARY officers -- Training of; Subject Term: ILIAD of Homer; Subject Term: COMMAND of troops -- Study & teaching; Subject Term: ; Number of Pages: 5p; ; Document Type: Essay; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=36986958&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - THOMAS G. MCGUIRE T1 - War Literature, the Constitution, and Fostering Reluctant Killers. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2008/11// Y1 - 2008/11// VL - 20 IS - 1/2 M3 - Essay SP - 24 EP - 30 PB - US Air Force Academy English Department SN - 10466967 AB - An essay is presented discussing the value of studying literature in the training of soldiers. Discussion is offered highlighting the ideological paradox of training "reluctant killers" in modern armed forces and the central role that the Humanities holds in encouraging the conscientious aspects of war ethics. KW - ESSAY (Literary form) KW - WAR & literature KW - HUMANITIES -- Study & teaching KW - WAR & ethics -- Study & teaching KW - MILITARY personnel -- Training of KW - CONSCIENCE N1 - Accession Number: 36986959; Source Information: 2008, Vol. 20 Issue 1/2, p24; Subject Term: ESSAY (Literary form); Subject Term: WAR & literature; Subject Term: HUMANITIES -- Study & teaching; Subject Term: WAR & ethics -- Study & teaching; Subject Term: MILITARY personnel -- Training of; Subject Term: CONSCIENCE; Subject Term: ; Number of Pages: 7p; ; Document Type: Essay; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=36986959&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - ANDERSON, DONALD T1 - When War Becomes Personal. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2008/11// Y1 - 2008/11// VL - 20 IS - 1/2 M3 - Article SP - 31 EP - 34 PB - US Air Force Academy English Department SN - 10466967 AB - An adaptation is presented from the introduction of "When War Becomes Personal: Soldiers' Accounts from the Civil War to Iraq," edited by Donald Anderson, and discusses the moral significance of personal solider narratives as a genre in war literature. KW - LITERATURE -- Adaptations KW - WAR stories N1 - Accession Number: 36986960; Source Information: 2008, Vol. 20 Issue 1/2, p31; Subject Term: LITERATURE -- Adaptations; Subject Term: WAR stories; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=36986960&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - VARGISH, THOMAS T1 - The Authority of Crises. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2008/11// Y1 - 2008/11// VL - 20 IS - 1/2 M3 - Literary Criticism SP - 121 EP - 137 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents a literary criticism of several books and films reflecting on the social authority of "Crises" and their impact on military and political decision making. Works cited include Aldous Huxley's "Brave New World," Herman Melville's "Billy Budd, Sailor," and the Stanley Kubrick film "Paths of Glory." The psychological dangers of social crises are outlined and warned against. KW - CRITICISM KW - CRISIS rhetoric KW - WAR & literature KW - DYSTOPIAS KW - BRAVE New World (Book : Huxley) KW - BILLY Budd (Book : Melville) KW - PATHS of Glory (Film) KW - POLITICAL science N1 - Accession Number: 36986972; Source Information: 2008, Vol. 20 Issue 1/2, p121; Subject Term: CRITICISM; Subject Term: CRISIS rhetoric; Subject Term: WAR & literature; Subject Term: DYSTOPIAS; Subject Term: BRAVE New World (Book : Huxley); Subject Term: BILLY Budd (Book : Melville); Subject Term: PATHS of Glory (Film); Subject Term: POLITICAL science; Subject Term: ; Number of Pages: 17p; ; Document Type: Literary Criticism; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=36986972&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - BISHOP, JAMES GLEASON T1 - "she whose eyes are open forever": Does Protest Poetry Matter? JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2008/11// Y1 - 2008/11// VL - 20 IS - 1/2 M3 - Literary Criticism SP - 314 EP - 320 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents a literary criticism and review essay of the book "Behind the Lines: War Resistance Poetry on the American Homefront since 1941," by Philip Metres. Discussion is given highlighting a paradoxical relationship between military responsibility and anti-war movements. The book's argument that civilians have a distinct role in the war protest dialogue, despite their unpopularity, is also addressed. KW - BEHIND the Lines: War Resistance Poetry on the American Homefront Since 1941 (Book) KW - CRITICISM KW - METRES, Philip KW - ANTI-war poetry KW - PEACE movements KW - DEMONSTRATIONS (Collective behavior) N1 - Accession Number: 36987004; Source Information: 2008, Vol. 20 Issue 1/2, p314; Subject Term: BEHIND the Lines: War Resistance Poetry on the American Homefront Since 1941 (Book); Subject Term: CRITICISM; Subject Term: METRES, Philip; Subject Term: ANTI-war poetry; Subject Term: PEACE movements; Subject Term: DEMONSTRATIONS (Collective behavior); Subject Term: ; Number of Pages: 7p; ; Document Type: Literary Criticism; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=36987004&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Liangti Qu AU - Liming Dai AU - Stone, Morley AU - Zhenhai Xia AU - Zhong Lin Wang T1 - Carbon Nanotube Arrays with Strong Shear Binding-On and Easy Normal Lifting-Off. JO - Science JF - Science Y1 - 2008/10/10/ VL - 322 IS - 5899 M3 - Article SP - 238 EP - 242 SN - 00368075 AB - The ability of gecko lizards to adhere to a vertical solid surface comes from their remarkable feet with aligned microscopic elastic hairs. By using carbon nanotube arrays that are dominated by a straight body segment but with curly entangled top, we have created gecko-foot-mimetic dry adhesives that show macroscopic adhesive forces of ~100 newtons per square centimeter, almost 10 times that of a gecko foot, and a much stronger shear adhesion force than the normal adhesion force, to ensure strong binding along the shear direction and easy lifting in the normal direction. This anisotropic force distribution is due to the shear-induced alignments of the curly segments of the nanotubes. The mimetic adhesives can be alternatively binding-on and lifting-off over various substrates for simulating the walking of a living gecko. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Geckos KW - Squamata KW - Adhesion KW - Fullerenes KW - Carbon nanotubes KW - Adhesives N1 - Accession Number: 35094109; Liangti Qu 1; Liming Dai 1; Email Address: ldai@udayton.edu; Stone, Morley 2; Zhenhai Xia 3; Zhong Lin Wang 4; Email Address: zlwang@gatech.edu; Affiliations: 1: Department of Chemical and Materials Engineering, School of Engineering, University of Dayton, 300 College Park, Dayton, OH 45469, USA; 2: Air Force Research Laboratory, Human Effectiveness Directorate, AFRL/RH, Wright-Patterson Air Force Base, OH 45433, USA; 3: Department of Mechanical Engineering, University of Akron, Akron, OH 44325, USA; 4: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; Issue Info: 10/10/2008, Vol. 322 Issue 5899, p238; Thesaurus Term: Geckos; Thesaurus Term: Squamata; Thesaurus Term: Adhesion; Thesaurus Term: Fullerenes; Subject Term: Carbon nanotubes; Subject Term: Adhesives; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 325520 Adhesive Manufacturing; Number of Pages: 5p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1126/science.1159503 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=35094109&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - CONF AU - MENGU CHO AU - GARRETT, HENRY B. AU - HILGERS, ALAIN AU - LAI, SHU T. AU - PAYAN, DENIS AU - ROUSSEL, JEAN-FRANÇOIS T1 - Guest Editorial: Special Issue on Spacecraft Charging Technology. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2008/10/02/Oct2008 Part 2 of 4 Y1 - 2008/10/02/Oct2008 Part 2 of 4 VL - 36 IS - 5 M3 - Proceeding SP - 2218 EP - 2218 SN - 00933813 AB - The article provides information on the tenth Spacecraft Charging Technology Conference held in Biarritz. KW - CONFERENCES & conventions KW - SPACE vehicles N1 - Accession Number: 35735568; Source Information: Oct2008 Part 2 of 4, Vol. 36 Issue 5, p2218; Subject Term: CONFERENCES & conventions; Subject Term: SPACE vehicles; Subject Term: ; Number of Pages: 1p; ; Document Type: Proceeding; L3 - 10.1109/TPS.2008.2006198 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=35735568&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Lund, Matthew T1 - Rockwell International, Pondcrete, and an A La Carte Three-Step Test for Determining an "Original Source" in Qui Tam Lawsuits. JO - Brigham Young University Law Review JF - Brigham Young University Law Review Y1 - 2008/10// VL - 2008 IS - 4 M3 - Article SP - 1243 EP - 1273 PB - Brigham Young University Law School SN - 0360151X AB - he article presents information on the legislative and historical context of qui tam actions under the False Claims Act (FCA) in the U.S. It summarizes the circuit court split on the meaning of the phrase "direct and independent knowledge" involving qui tam actions. It discusses the application of the actions in Rockwell International's holding to the split to show that "independent" no longer has a discrete meaning from "direct" and that "knowledge" could now include a prediction. It also proposes a three-step test that would resolve the circuit court split while staying true to Rockwell. KW - CLAIMS KW - ACTIONS & defenses (Law) KW - POPULAR actions KW - CIRCUIT courts KW - UNITED States KW - ROCKWELL International Corp. N1 - Accession Number: 35905096; Lund, Matthew 1; Affiliations: 1: Captain, United States Air force; Issue Info: 2008, Vol. 2008 Issue 4, p1243; Thesaurus Term: CLAIMS; Thesaurus Term: ACTIONS & defenses (Law); Subject Term: POPULAR actions; Subject Term: CIRCUIT courts; Subject: UNITED States ; Company/Entity: ROCKWELL International Corp. Ticker: ROK; NAICS/Industry Codes: 922110 Courts; Number of Pages: 31p; Illustrations: 1 Diagram, 2 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=35905096&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 105564903 T1 - Case report: unilateral negative pressure pulmonary edema - a complication of endobronchial intubation. AU - Goodman BT AU - Richardson MG Y1 - 2008/10// N1 - Accession Number: 105564903. Language: English. Entry Date: 20090130. Revision Date: 20150711. Publication Type: Journal Article; case study. Journal Subset: Biomedical; Peer Reviewed; USA. NLM UID: 8701709. KW - Bronchi KW - Intraoperative Complications -- Etiology KW - Intubation, Intratracheal -- Adverse Effects KW - Lung -- Radiography KW - Pulmonary Edema -- Etiology KW - Adult KW - Anoxia -- Etiology KW - Bariatric Surgery KW - Female KW - Obesity -- Surgery KW - Pulmonary Edema -- Diagnosis KW - Respiration, Artificial -- Methods KW - Suction SP - 691 EP - 695 JO - Canadian Journal of Anaesthesia JF - Canadian Journal of Anaesthesia JA - CAN J ANAESTH VL - 55 IS - 10 CY - , PB - Springer Science & Business Media B.V. SN - 0832-610X AD - Department of Anesthesiology, Lakenheath Hospital, United States Air Force, Royal Air Force Lakenheath, Brandon, Suffolk, England. U2 - PMID: 18835967. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105564903&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - AU - Rasel, J. T.1 T1 - Voices raised in protest: defending citizens of Japanese ancestry in North America, 1942-1949. JO - Choice: Current Reviews for Academic Libraries JF - Choice: Current Reviews for Academic Libraries J1 - Choice: Current Reviews for Academic Libraries PY - 2008/10// Y1 - 2008/10// VL - 46 IS - 2 CP - 2 M3 - Book Review SP - 372 EP - 373 SN - 00094978 AB - This article presents a review of the book "Voices Raised in Protest: Defending Citizens of Japanese Ancestry in North America, 1942-1949," by Stephanie Bangarth. KW - Nonfiction KW - Japanese Americans -- Evacuation & relocation, 1942-1945 KW - Bangarth, Stephanie KW - Voices Raised in Protest: Defending North American Citizens of Japanese Ancestry 1942-1949 (Book) N1 - Accession Number: 34587789; Authors: Rasel, J. T. 1; Affiliations: 1: Air Force Research Laboratory.; Subject: Voices Raised in Protest: Defending North American Citizens of Japanese Ancestry 1942-1949 (Book); Subject: Bangarth, Stephanie; Subject: Japanese Americans -- Evacuation & relocation, 1942-1945; Subject: Nonfiction; Number of Pages: 2p; Record Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=34587789&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - Tartakovsky, Alexander G. AU - Brown, James T1 - Adaptive Spatial-Temporal Filtering Methods for Clutter Removal and Target Tracking. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2008/10// VL - 44 IS - 4 M3 - Article SP - 1522 EP - 1537 SN - 00189251 AB - In space-based infrared (IR) ballistic missile defense sensor systems, cluttered backgrounds are typically much more intense than the equivalent sensor noise or the targets being detected. Therefore, the development of efficient clutter removal and target preservation-enhancement algorithms is of crucial importance. To meet customer requirements, the advanced clutter rejection algorithms should provide more than 20 dB improvement in detection sensitivity. We propose an adaptive parametric spatial-temporal filtering technique together with the jitter compensation (scene stabilization). The results of simulations and processing of real data show that the developed adaptive spatial-temporal clutter suppression algorithms allow for efficient clutter rejection in all tested situations. Proposed algorithms completely remove heavy clutter in the presence of substantial jitter and do not require expensive subpixel jitter stabilizers. In contrast, spatial-only filters and temporal differencing methods can be used only for weak and relatively correlated clutter. A stand-alone simulator was developed to demonstrate capabilities and performance of various algorithmic approaches. Simulations model various geometries, resolutions, illuminations, and meteorological conditions for space-based IR staring sensor systems. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - BALLISTIC missiles KW - SENSOR networks KW - DETECTORS KW - GEOMETRY KW - METEOROLOGICAL instruments N1 - Accession Number: 36581126; Tartakovsky, Alexander G. 1; Email Address: tartakov@usc.edu; Brown, James 2; Affiliations: 1: Dept. of Mathematics, University of Southern California, 3620 S. Vermont Ave., KAP-108, Los Angeles, CA 90089-2532; 2: Air Force Research Laboratory/VSBYB, 29 Randolph Rd., Hanscom AFB, MA 01731; Issue Info: Oct2008, Vol. 44 Issue 4, p1522; Thesaurus Term: ALGORITHMS; Subject Term: BALLISTIC missiles; Subject Term: SENSOR networks; Subject Term: DETECTORS; Subject Term: GEOMETRY; Subject Term: METEOROLOGICAL instruments; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 16p; Illustrations: 2 Black and White Photographs, 5 Diagrams, 1 Chart, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=36581126&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Van Caekenberghe, Koen AU - Brakora, Kenneth M. AU - Wonbin Hong AU - Jumani, Karan AU - DaHan Liao AU - Rangwala, Mustafa AU - Yun-Zhen Wee AU - Xinen Zhu AU - Sarabandi, Kamal T1 - A 2—40 GHz Probe Station Based Setup for On-Wafer Antenna Measurements. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2008/10// Y1 - 2008/10// VL - 56 IS - 10 M3 - Article SP - 3241 EP - 3247 SN - 0018926X AB - A probe station based setup for on-wafer antenna measurements is presented. The setup allows for measurement of return loss and radiation patterns of an on-wafer antenna—henceforth referred to as the antenna under test (AUT), radiating at broadside and fed through a coplanar waveguide (CPW). It eliminates the need for wafer dicing and custom-built test fixtures with coaxial connectors or waveguide flanges by contacting the AUT with a coplanar microwave probe. In addition, the AUT is probed exactly where it will be connected to a transceiver IC later on, obviating de-embedding of the measured data. Sources of measurement errors are related to calibration, insufficient dynamic range, misalignment, forward scattering from nearby objects, and vibrations. The performance of the setup is demonstrated from 2 to 40 GHz through measurement of an on-wafer electrically small slot antenna (λ0/35 × λ0/35, 3.5 × 3.5 mm²) radiating at 2.45 GHz and an aperture coupled microstrip antenna (2.4 × 1.7 mm²) radiating at 38 GHz. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATION KW - POLARIZATION (Nuclear physics) KW - MICROSTRIP antennas KW - WAVEGUIDES KW - ANTENNAS (Electronics) KW - ANTENNA arrays N1 - Accession Number: 34956919; Source Information: Oct2008, Vol. 56 Issue 10, p3241; Subject Term: RADIATION; Subject Term: POLARIZATION (Nuclear physics); Subject Term: MICROSTRIP antennas; Subject Term: WAVEGUIDES; Subject Term: ANTENNAS (Electronics); Subject Term: ANTENNA arrays; Subject Term: ; Number of Pages: 7p; ; Illustrations: 1 Chart, 6 Graphs; ; Document Type: Article; L3 - 10.1109/TAP.2008.929433 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=34956919&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Heller, Eric R. T1 - Simulation of Life Testing Procedures for Estimating Long-Term Degradation and Lifetime of AlGaN/GaN HEMTs. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices J1 - IEEE Transactions on Electron Devices PY - 2008/10// Y1 - 2008/10// VL - 55 IS - 10 M3 - Article SP - 2554 EP - 2560 SN - 00189383 AB - Finite element 3-D thermal simulations of long-term degradation in AlGaN/GaN HEMTs for high-power applications are reported on, in which temperature evolves over time as the local degradation rate varies within the modeled device based on the local temperature of the degrading region (i.e., the channel). Specifically, hotter regions within a device are modeled as degrading faster due to a thermal component to the degradation rate equation. This allows self-consistent simulation of life testing, commonly used to estimate long-term reliability by extrapolating failure times seen at elevated channel temperatures to a lower "use" temperature. We find that it is necessary to consider the entire distribution of temperatures within the device instead of at one characteristic location to get the most accurate estimates for long-term device life. The effect of device geometry, assumed degradation mode, incorrect thermal resistance data, and dissipated power level on this lifetime estimation error is investigated. It is found that the error in the extrapolated failure time is greatly increased when both the thermal resistance is in error and the dissipated power of the life test does not match the expected power during operation, compared to when only one of these is off. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MODULATION-doped field-effect transistors KW - COMMERCIAL products -- Testing KW - SIMULATION methods & models KW - ALUMINUM KW - GALLIUM (Metal) KW - NITROGEN KW - RELIABILITY (Personality trait) N1 - Accession Number: 34787418; Source Information: Oct2008, Vol. 55 Issue 10, p2554; Subject Term: MODULATION-doped field-effect transistors; Subject Term: COMMERCIAL products -- Testing; Subject Term: SIMULATION methods & models; Subject Term: ALUMINUM; Subject Term: GALLIUM (Metal); Subject Term: NITROGEN; Subject Term: RELIABILITY (Personality trait); Subject Term: ; Number of Pages: 7p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=34787418&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Hargus, Jr., William A. AU - Nakies, Michael R. T1 - Ion Velocity Measurements Within the Acceleration Channel of a Low-Power Hall Thruster. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2008/10//Oct2008 Part 1 of 4 Y1 - 2008/10//Oct2008 Part 1 of 4 VL - 36 IS - 5 M3 - Article SP - 1989 EP - 1997 SN - 00933813 AB - This paper presents axial ion velocity measurements within the acceleration channel of the 200-W Busek Company Inc. BHT-200 laboratory Hall thruster derived from laser-induced fluorescence measurements of the 5d [4] τ/2 - 6p [3]5/2 xenon-ion excited-state transition. Acceleration-channel-centerline ion velocities were measured for one nominal and six related cases. These six cases were chosen to be representative of small variations of the applied propellant flow, magnetic field, and discharge potential from the nominal condition. These deviations in operating parameters translate into changes in the plasma density, electron transport, and applied electric field, respectively. The effect of varying the magnetic field, hence influencing the electron transport, is to adjust the location of the internal ion acceleration. Increasing the anode propellant flow, which proportionally increases the plasma density and also influences the electron transport, appears to shift the acceleration upstream. Increasing the discharge potential increases ion acceleration proportionally. Examinations of the fluorescence traces, which have been previously shown to be representative of the ion velocity distributions, are also undertaken. From these data, it is possible to estimate internal axial electric fields and identify regions of ion acceleration and creation. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HALL effect devices KW - HALL effect KW - PLASMA accelerators KW - ELECTROSTATIC accelerators KW - ION bombardment KW - ION channels KW - MAGNETIC fields KW - CATHODES KW - ELECTRODES N1 - Accession Number: 35569169; Source Information: Oct2008 Part 1 of 4, Vol. 36 Issue 5, p1989; Subject Term: HALL effect devices; Subject Term: HALL effect; Subject Term: PLASMA accelerators; Subject Term: ELECTROSTATIC accelerators; Subject Term: ION bombardment; Subject Term: ION channels; Subject Term: MAGNETIC fields; Subject Term: CATHODES; Subject Term: ELECTRODES; Subject Term: ; Number of Pages: 9p; ; Illustrations: 2 Black and White Photographs, 2 Diagrams, 11 Graphs; ; Document Type: Article; L3 - 10.1109/TPS.2008.2003967 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=35569169&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Shelley, Michael L. AU - Wagner, Andrew J. AU - Hussain, Saber M. AU - Bleckmann, Charles T1 - Modeling the In Vivo Case with In Vitro Nanotoxicity Data. JO - International Journal of Toxicology (Taylor & Francis) JF - International Journal of Toxicology (Taylor & Francis) Y1 - 2008/10// VL - 27 IS - 5 M3 - Article SP - 359 EP - 367 PB - Taylor & Francis Ltd SN - 10915818 AB - As more in vitro nanotoxicity data appear in the literature, these findings must be translated to in vivo effects to define nanoparticle exposure risk. Physiologically based pharmacokinetic (PBPK) modeling has played a significant role in guiding and validating in vivo studies for molecular chemical exposure and can develop as a significant tool in guiding similar nanotoxicity studies. This study models the population dynamics of a single cell type within a specific tissue. It is the first attempt to model the in vitro effects of a nanoparticle exposure, in this case aluminum (80 nm) and its impact on a population of rat alveolar macrophages (Wagner et al. 2007, J. Phys. Chem. B 111:7353-7359). The model demonstrates how in vitro data can be used within a simulation setting of in vivo cell dynamics and suggests that PBPK models should be developed quickly to interpret nanotoxicity data, guide in vivo study design, and accelerate nanoparticle risk assessment. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Toxicology (Taylor & Francis) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Toxicology KW - Hazardous substances KW - Aluminum KW - Health risk assessment KW - Pharmacokinetics KW - Killer cells KW - Chemicals KW - Nanoparticles KW - Rats as laboratory animals KW - Immunodeficiency KW - Lung KW - Nanotoxicity KW - Physiologically Based Pharmacokinetic Modeling N1 - Accession Number: 35484596; Shelley, Michael L. 1; Email Address: Michael.Shelley@afit.edu; Wagner, Andrew J. 1; Hussain, Saber M. 2; Bleckmann, Charles 1; Affiliations: 1: Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio, USA; 2: Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, USA; Issue Info: Oct2008, Vol. 27 Issue 5, p359; Thesaurus Term: Toxicology; Thesaurus Term: Hazardous substances; Thesaurus Term: Aluminum; Thesaurus Term: Health risk assessment; Subject Term: Pharmacokinetics; Subject Term: Killer cells; Subject Term: Chemicals; Subject Term: Nanoparticles; Subject Term: Rats as laboratory animals; Author-Supplied Keyword: Immunodeficiency; Author-Supplied Keyword: Lung; Author-Supplied Keyword: Nanotoxicity; Author-Supplied Keyword: Physiologically Based Pharmacokinetic Modeling; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 562112 Hazardous Waste Collection; NAICS/Industry Codes: 923120 Administration of Public Health Programs; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 9p; Illustrations: 1 Diagram, 1 Chart, 6 Graphs; Document Type: Article L3 - 10.1080/10915810802503487 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=35484596&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 105967099 T1 - September 11th. AU - Grimm JW Y1 - 2008/10// N1 - Accession Number: 105967099. Language: English. Entry Date: 20081212. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. Special Interest: Emergency Care. NLM UID: 7605913. KW - Flight Nursing -- Psychosocial Factors KW - Military Nursing -- Psychosocial Factors KW - Overseas Deployment KW - Terrorism -- New York KW - Emergency Nursing KW - New York SP - 447 EP - 450 JO - JEN: Journal of Emergency Nursing JF - JEN: Journal of Emergency Nursing JA - J EMERG NURS VL - 34 IS - 5 CY - New York, New York PB - Elsevier Science SN - 0099-1767 AD - United States Air Force, Lackland Air Force Base, TX, USA. jasonwgrimm@aol.com U2 - PMID: 18804719. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105967099&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Westermann, Edward B. T1 - Partners in Genocide: The German Police and the Wehrmacht in the Soviet Union. JO - Journal of Strategic Studies JF - Journal of Strategic Studies Y1 - 2008/10// VL - 31 IS - 5 M3 - Article SP - 771 EP - 796 SN - 01402390 AB - In the Soviet Union, Schutzstaffel (SS) and police forces adopted the strategy of the direct approach as the keystone of German security policy in the occupied territories. Operating in conjunction with Wehrmacht units and indigenous auxiliaries, Reich Leader of the SS and Chief of the German Police Heinrich Himmler's Uniformed Police (Ordnungspolizei) battalions, became essential instruments in the subjugation, exploitation, and pacification of the German rear areas. This article examines the cooperative relationship that developed between SS and police forces, the Wehrmacht, and indigenous auxiliaries during the German antipartisan campaign in the east. On the one hand, the cooperation of the police with the German armed forces reflected a true "interagency" approach to counterinsurgency warfare; an approach formalized in policy agreements between both organizations prior to the 1941 invasion of Russia and cemented in combined operations aimed at Soviet partisans and their supporters. On the other hand, this analysis of combined operations between German SS and police and Wehrmacht forces offers further evidence of the key role played by the German army and air force in the antipartisan campaign, and ultimately genocide. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Strategic Studies is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GENOCIDE KW - MILITARY occupation KW - AIR forces KW - WORLD War, 1939-1945 -- Atrocities KW - WORLD War, 1939-1945 -- Underground movements KW - ARMED Forces auxiliaries KW - ARMIES KW - COUNTERINSURGENCY KW - MILITARY assistance KW - GUERRILLAS KW - POLICE KW - WORLD War, 1939-1945 KW - SOVIET Union KW - Atrocity KW - Counterinsurgency KW - Holocaust KW - Poland KW - Soviet Union KW - SS KW - Uniformed Police KW - Wehrmacht KW - NATIONALSOZIALISTISCHE Deutsche Arbeiter-Partei. Schutzstaffel KW - HIMMLER, Heinrich, 1900-1945 N1 - Accession Number: 34011168; Westermann, Edward B. 1; Affiliations: 1 : United States Air Force Academy, USA; Source Info: Oct2008, Vol. 31 Issue 5, p771; Historical Period: 1939 to 1942; Subject Term: GENOCIDE; Subject Term: MILITARY occupation; Subject Term: AIR forces; Subject Term: WORLD War, 1939-1945 -- Atrocities; Subject Term: WORLD War, 1939-1945 -- Underground movements; Subject Term: ARMED Forces auxiliaries; Subject Term: ARMIES; Subject Term: COUNTERINSURGENCY; Subject Term: MILITARY assistance; Subject Term: GUERRILLAS; Subject Term: POLICE; Subject Term: WORLD War, 1939-1945; Subject: SOVIET Union; Author-Supplied Keyword: Atrocity; Author-Supplied Keyword: Counterinsurgency; Author-Supplied Keyword: Holocaust; Author-Supplied Keyword: Poland; Author-Supplied Keyword: Soviet Union; Author-Supplied Keyword: SS; Author-Supplied Keyword: Uniformed Police; Author-Supplied Keyword: Wehrmacht; Number of Pages: 26p; Document Type: Article L3 - 10.1080/01402390802197977 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hia&AN=34011168&site=ehost-live&scope=site DP - EBSCOhost DB - hia ER - TY - JOUR ID - 105574558 T1 - Peer and role model influences for cigarette smoking in a young adult military population. AU - Green KJ AU - Hunter CM AU - Bray RM AU - Pemberton M AU - Williams J AU - Green, Kathy J AU - Hunter, Christine M AU - Bray, Robert M AU - Pemberton, Michael AU - Williams, Jason Y1 - 2008/10// N1 - Accession Number: 105574558. Language: English. Entry Date: 20090130. Revision Date: 20161119. Publication Type: journal article; research. Journal Subset: Biomedical; Europe; UK & Ireland. Grant Information: Z99 DK999999//Intramural NIH HHS/United States. NLM UID: 9815751. KW - Behavior, Addictive -- Epidemiology KW - Interpersonal Relations KW - Military Personnel -- Statistics and Numerical Data KW - Peer Group KW - Smoking -- Epidemiology KW - Adult KW - Behavior, Addictive -- Psychosocial Factors KW - Confidence Intervals KW - Cross Sectional Studies KW - Female KW - Male KW - Military Personnel -- Psychosocial Factors KW - Odds Ratio KW - Questionnaires KW - Risk Taking Behavior KW - Smoking Cessation KW - Smoking -- Psychosocial Factors KW - Social Environment KW - United States KW - Human SP - 1533 EP - 1541 JO - Nicotine & Tobacco Research JF - Nicotine & Tobacco Research JA - NICOTINE TOBACCO RES VL - 10 IS - 10 PB - Oxford University Press / USA AB - Previous research has shown that 8% to 10% of nonsmokers initiated smoking during their first year of military service despite a period of forced abstinence during boot camp. To our knowledge, no studies have looked at the influence of peers and role models on the initiation of smoking among U.S. Air Force personnel who recently completed boot camp. This cross-sectional study examined the role of perceived peer norms, roommate influence, role model influence, perceived norms of all active duty personnel, and depressive symptoms in the initiation and reinitiation of smoking among 2,962 Air Force technical training students. Previous nonsmokers were more likely to initiate smoking if they perceived that the majority of their classmates smoked (OR = 1.67, 95% CI[1.05-2.67]) and if they reported that their military training leader or classroom instructor used tobacco products (OR = 1.69, 95% CI[1.12-2.56]). Additionally, previous nonsmokers were more likely to initiate smoking if their roommate smoked (OR = 1.67, 95% CI[1.09-2.56]). Similar results were seen with previous smokers who perceived that the majority of their classmates smoked (OR = 1.63, 95% CI[1.03-2.58]) and if they reported that their military training leader or classroom instructor used tobacco products (OR = 1.95, 95% CI[1.29-2.94]). Our study suggests that military role models who use tobacco, peer smoking behavior, and perceived smoking norms increase the likelihood of smoking initiation among newly enlisted military personnel who have recently undergone a period of forced abstinence. SN - 1462-2203 AD - United States Air Force, Health Promotion, Air Force Medical Operations Agency, Office of the Surgeon General, Bolling AFB, DC 20032-7050, USA AD - United States Air Force, Health Promotion, Air Force Medical Operations Agency, Office of the Surgeon General, Bolling AFB, DC 20032-7050, USA. kathy.green@pentagon.af.mil U2 - PMID: 18946772. DO - 10.1080/14622200802398763 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105574558&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Betancor, Lorena AU - Luckarift, Heather R. T1 - Bioinspired enzyme encapsulation for biocatalysis JO - Trends in Biotechnology JF - Trends in Biotechnology Y1 - 2008/10// VL - 26 IS - 10 M3 - Article SP - 566 EP - 572 SN - 01677799 AB - Biocatalysis exploits the versatility of enzymes to catalyse a variety of processes for the production of novel compounds and natural products. Enzyme immobilization enhances the stability and hence applicability of biomolecules as reusable and robust biocatalysts. Biomimetic mineralization reactions have emerged as a versatile tool for generating excellent supports for enzyme stabilization. The methodology utilizes biological templates and synthetic analogues to catalyse the formation of inorganic oxides. Such materials provide biocompatible environments for enzyme immobilization. The utility of the method is further enhanced by entraining and attaching encapsulated catalysts to a variety of supports. This review discusses biomimetic and bioinspired mineral formation as a technique for the immobilization of enzymes with potential application to a wealth of biocatalytic processes. [Copyright &y& Elsevier] AB - Copyright of Trends in Biotechnology is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Catalysis KW - Biomolecules KW - Oxides KW - Biomimetics (Chemistry) KW - Enzymes N1 - Accession Number: 34295291; Betancor, Lorena 1; Luckarift, Heather R. 2; Email Address: heather.luckarift.ctr@tyndall.af.mil; Affiliations: 1: Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Old Addenbrookes Site, Cambridge CB2 1GA, UK; 2: Microbiology and Applied Biochemistry, Air Force Research Laboratory, 139 Barnes Drive, Suite #2, Tyndall Air Force Base, Florida 32403, USA; Issue Info: Oct2008, Vol. 26 Issue 10, p566; Thesaurus Term: Catalysis; Thesaurus Term: Biomolecules; Thesaurus Term: Oxides; Thesaurus Term: Biomimetics (Chemistry); Subject Term: Enzymes; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.tibtech.2008.06.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=34295291&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2008-16049-001 AN - 2008-16049-001 AU - Gibb, Randall W. AU - Olson, Wes T1 - Classification of air force aviation accidents: Mishap trends and prevention. JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 2008/10// VL - 18 IS - 4 SP - 305 EP - 325 CY - United Kingdom PB - Taylor & Francis SN - 1050-8414 SN - 1532-7108 AD - Gibb, Randall W., USAFA/DFB, 2354 Fairchild Suite 6L-166, CO, US, 80840 N1 - Accession Number: 2008-16049-001. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Gibb, Randall W.; United States Air Force Academy, CO, US. Other Publishers: Lawrence Erlbaum. Release Date: 20090330. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Accident Prevention; Air Force Personnel; Air Traffic Accidents; Errors; Risk Assessment. Minor Descriptor: Aviation Safety. Classification: Transportation (4090); Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 21. Issue Publication Date: Oct, 2008. AB - This article reanalyzed 124 U.S. Air Force aviation mishaps from 1992 through 2005, using the Department of Defense Human Factors Analysis and Classification System. Mishap types included controlled flight into terrain, loss of control, spatial disorientation, and midair collisions. All accidents were linked with supervisory errors related to proficiency and experience factors. Preconditions to unsafe acts were most frequently related to cognitive, psychobehavioral, and coordination, communication, and planning factors. Continued improvements in operational risk assessment and crew resource management are suggested, as well as interventions such as flight operations quality assurance and line-oriented safety audits to specifically focus latent error mitigation strategies. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - air force aviation accidents KW - errors KW - risk assessment KW - prevention KW - 2008 KW - Accident Prevention KW - Air Force Personnel KW - Air Traffic Accidents KW - Errors KW - Risk Assessment KW - Aviation Safety KW - 2008 DO - 10.1080/10508410802346913 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-16049-001&site=ehost-live&scope=site UR - randall.gibb@usafa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-15484-003 AN - 2008-15484-003 AU - Green, Kathy J. AU - Hunter, Christine M. AU - Bray, Robert M. AU - Pemberton, Michael AU - Williams, Jason T1 - Peer and role model influences for cigarette smoking in a young adult military population. JF - Nicotine & Tobacco Research JO - Nicotine & Tobacco Research JA - Nicotine Tob Res Y1 - 2008/10// VL - 10 IS - 10 SP - 1533 EP - 1541 CY - United Kingdom PB - Taylor & Francis SN - 1462-2203 SN - 1469-994X AD - Green, Kathy J., Air Force Medical Operations Agency, Office of the Surgeon General, 110 Luke Avenue, Room 405, Bolling AFB, DC, US, 20032-7050 N1 - Accession Number: 2008-15484-003. PMID: 18946772 Partial author list: First Author & Affiliation: Green, Kathy J.; United States Air Force, Bolling AFB, DC, US. Other Publishers: Oxford University Press. Release Date: 20090330. Correction Date: 20130909. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Military Training; Peers; Role Models; Social Influences; Tobacco Smoking. Minor Descriptor: Air Force Personnel. Classification: Drug & Alcohol Usage (Legal) (2990); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: Center for Epidemiologic Studies Depression Scale. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 9. Issue Publication Date: Oct, 2008. AB - Previous research has shown that 8% to 10% of nonsmokers initiated smoking during their first year of military service despite a period of forced abstinence during boot camp. To our knowledge, no studies have looked at the influence of peers and role models on the initiation of smoking among U.S. Air Force personnel who recently completed boot camp. This cross-sectional study examined the role of perceived peer norms, roommate influence, role model influence, perceived norms of all active duty personnel, and depressive symptoms in the initiation and reinitiation of smoking among 2,962 Air Force technical training students. Previous nonsmokers were more likely to initiate smoking if they perceived that the majority of their classmates smoked (OR = 1.67, 95% CI[1.05-2.67]) and if they reported that their military training leader or classroom instructor used tobacco products (OR = 1.69, 95% CI[1.12-2.56]). Additionally, previous nonsmokers were more likely to initiate smoking if their roommate smoked (OR = 1.67, 95% CI[1.09-2.56]). Similar results were seen with previous smokers who perceived that the majority of their classmates smoked (OR = 1.63, 95% CI[1.03-2.58]) and if they reported that their military training leader or classroom instructor used tobacco products (OR = 1.95, 95% CI[1.29-2.94]). Our study suggests that military role models who use tobacco, peer smoking behavior, and perceived smoking norms increase the likelihood of smoking initiation among newly enlisted military personnel who have recently undergone a period of forced abstinence. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - peer influences KW - role model influences KW - cigarette smoking KW - Air Force personnel KW - 2008 KW - Military Training KW - Peers KW - Role Models KW - Social Influences KW - Tobacco Smoking KW - Air Force Personnel KW - 2008 U1 - Sponsor: USAMARMC, Fort Detrick Peer Reviewed Medical Research Program. Grant: DAMD17-00-1-0581. Recipients: No recipient indicated DO - 10.1080/14622200802398763 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-15484-003&site=ehost-live&scope=site UR - ORCID: 0000-0002-3804-2594 UR - UR - kathy.green@pentagon.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR T1 - Apparent evaporative resistance at critical conditions for five clothing ensembles. AU - Caravello, Victor AU - McCullough, Elizabeth AU - Ashley, Candi AU - Bernard, Thomas AU - McCullough, Elizabeth A AU - Ashley, Candi D AU - Bernard, Thomas E JO - European Journal of Applied Physiology JF - European Journal of Applied Physiology Y1 - 2008/09/15/ VL - 104 IS - 2 SP - 361 EP - 367 SN - 14396319 N1 - Accession Number: 33937340; Author: Caravello, Victor: 1 Author: McCullough, Elizabeth: 2 Author: Ashley, Candi: 3 Author: Bernard, Thomas: 4 email: tbernard@health.usf.edu. Author: McCullough, Elizabeth A Author: Ashley, Candi D Author: Bernard, Thomas E ; Author Affiliation: 1 United States Air Force, Detachment 3, Air Force Institute for Operational Health, Kadena Air Base, Okinawa, Japan: 2 Institute for Environmental Research , Kansas State University , Manhattan 66506 USA: 3 College of Education , University of South Florida , Tampa 33612 USA: 4 College of Public Health , University of South Florida , Tampa 33612-3805 USA; No. of Pages: 7; Language: English; Publication Type: journal article; Update Code: 20080821 N2 - A limiting factor for clothing ensembles inherent during heat stress exposures is the evaporative resistance, which can be used to compare candidate ensembles and in rational models of heat exchange. In this study, the apparent total evaporative resistance of five clothing ensembles (cotton work clothes, cotton coveralls, and coveralls made of Tyvek® 1424 and 1427, NexGen® and Tychem QC®) was estimated empirically from wear trials using a progressive heat stress protocol and from clothing insulation adjustments based on ISO 9920 () and wetness. The metabolic rate was moderate at 165 W m−2 and relative humidity was held at 50%. Twenty-nine heat-acclimated participants (20 men and 9 women) completed trials for all clothing ensembles. A general linear mixed effects model (ensemble and participants as a random effect) was used to analyze the data. Significant differences ( p < 0.0001) among ensembles were observed for apparent total evaporative resistance. As expected, Tychem QC had the highest apparent total evaporative resistance at 0.033 kPa m2 W−1. NexGen was next at 0.017 kPa m2 W−1. These were followed by Tyvek 1424 at 0.015 kPa m2 W−1, and Tyvek 1427, Cotton Coveralls and Work Clothes all at 0.013 kPa m2 W−1. This wear test method improves on past methods using the progressive protocol to determine evaporative resistance by including the effects of movement, air motion and wetness on the estimate of clothing insulation. The pattern of evaporative resistance is the same as that for critical WBGTs and a linear relationship between apparent total evaporative resistance and WBGT clothing adjustment factor is suggested. With the large sample size, a good estimate of sample variance associated with progressive method can be made, where the standard error is 0.0044 kPa m2 W−1 with a 95% confidence interval of 0.0040–0.0050 kPa m2 W−1. ABSTRACT FROM AUTHOR KW - *PROTECTIVE clothing KW - *HEAT -- Physiological effect KW - *HUMIDITY KW - *METABOLISM KW - *ACCLIMATIZATION KW - Evaporative resistance KW - Heat stress KW - Protective clothing UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=33937340&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 105695348 T1 - Radiological case. Small cell carcinoma with cystic metastasis to the brain. AU - Allan PF AU - Ly J Y1 - 2008/09// N1 - Accession Number: 105695348. Language: English. Entry Date: 20081121. Revision Date: 20150819. Publication Type: Journal Article; case study; diagnostic images; pictorial. Journal Subset: Allied Health; Peer Reviewed; USA. Special Interest: Diagnostic Imaging. NLM UID: 7708167. KW - Brain Neoplasms -- Diagnosis KW - Brain Neoplasms -- Radiography KW - Lung Neoplasms -- Diagnosis KW - Lung Neoplasms -- Radiography KW - Neoplasm Metastasis -- Radiography KW - Cysticercosis -- Diagnosis KW - Cysts -- Pathology KW - Diagnosis, Differential KW - Male KW - Middle Age KW - Neoplasm Metastasis -- Diagnosis KW - Radiography, Thoracic KW - Toxoplasmosis -- Diagnosis KW - Weight Loss SP - 44 EP - 47 JO - Applied Radiology JF - Applied Radiology JA - APPL RADIOL VL - 37 IS - 9 CY - Scotch Plains, New Jersey PB - Anderson Publishing Ltd. SN - 0160-9963 AD - Captain, United States Air Force, Wilford Hall Medical Center, San Antonio, TX UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105695348&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - AU - Rasel, J. T.1 T1 - The YIVO encyclopedia of Jews in eastern Europe. JO - Choice: Current Reviews for Academic Libraries JF - Choice: Current Reviews for Academic Libraries J1 - Choice: Current Reviews for Academic Libraries PY - 2008/09// Y1 - 2008/09// VL - 46 IS - 1 CP - 1 M3 - Book Review SP - 74 EP - 74 SN - 00094978 AB - The article reviews the book "The YIVO encyclopedia of Jews in eastern Europe," edited by Gershon David Hundert. KW - Nonfiction KW - Jews -- Europe, Eastern KW - Hundert, Gershon David KW - Yivo Encyclopedia of Jews in Eastern Europe, The (Book) N1 - Accession Number: 34230662; Authors: Rasel, J. T. 1; Affiliations: 1: Air Force Research Laboratory.; Subject: Yivo Encyclopedia of Jews in Eastern Europe, The (Book); Subject: Hundert, Gershon David; Subject: Jews -- Europe, Eastern; Subject: Nonfiction; Number of Pages: 1/4p; Record Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=34230662&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - Cathey, Charles AU - Cain, Jeremy AU - Wang, Hai AU - Gundersen, Martin A. AU - Carter, Campbell AU - Ryan, Michael T1 - OH production by transient plasma and mechanism of flame ignition and propagation in quiescent methane–air mixtures JO - Combustion & Flame JF - Combustion & Flame Y1 - 2008/09// VL - 154 IS - 4 M3 - Article SP - 715 EP - 727 SN - 00102180 AB - Abstract: Transient plasma induced production of OH is followed in a quiescent, stoichiometric CH4–air mixture using the planar laser induced fluorescence technique. Ignition and subsequent flame propagation, for both the transient plasma and traditional spark ignition, are observed with a high speed camera (2000 fps). The transient plasma is generated using a 70 ns FWHM, 60 kV, 800 mJ pulse. OH production was confirmed throughout the chamber volume; however, the mean number density was found to decay below near 100 μs. Nonetheless, ignition induced by transient plasma was decidedly faster than by spark ignition. Using the high speed camera, ignition initiated by transient plasma was found to occur along the length of the anode at approximately 1 ms, leading to the formation of a wrinkled, cylindrically-shaped flame. Analysis of the flame front propagation rates shows that flames ignited by transient plasma propagate essentially at the speed consistent with well accepted literature values for the stoichiometric methane–air mixture. This supports the notion that residue plasma, if any, has little effect on flame propagation. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Manure gases KW - Farm manure KW - Manures KW - Methane KW - Literature KW - High speed imaging KW - OH KW - Planar laser induced fluorescence KW - Pulsed power KW - Transient plasma KW - Transient plasma ignition KW - Volumetric ignition N1 - Accession Number: 33998227; Cathey, Charles 1; Email Address: charlie_96271@yahoo.com; Cain, Jeremy 1; Wang, Hai 1; Gundersen, Martin A. 1; Carter, Campbell 2; Ryan, Michael 3; Affiliations: 1: Department of Electrical Engineering–Electrophysics, University of Southern California, SSC 410, Seaver Science Center, 920 W. 37th Pl., Los Angeles, CA 90089-0271, USA; 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; 3: Universal Technology Corporation, Dayton, OH 45432, USA; Issue Info: Sep2008, Vol. 154 Issue 4, p715; Thesaurus Term: Manure gases; Thesaurus Term: Farm manure; Thesaurus Term: Manures; Thesaurus Term: Methane; Subject Term: Literature; Author-Supplied Keyword: High speed imaging; Author-Supplied Keyword: OH; Author-Supplied Keyword: Planar laser induced fluorescence; Author-Supplied Keyword: Pulsed power; Author-Supplied Keyword: Transient plasma; Author-Supplied Keyword: Transient plasma ignition; Author-Supplied Keyword: Volumetric ignition; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.combustflame.2008.03.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=33998227&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Jones, Kimberli AU - Shinde, Sachin R. AU - Clark, Paul N. AU - Hoeppner, David W. T1 - Effect of prior corrosion on short crack behavior in 2024-T3 aluminum alloy JO - Corrosion Science JF - Corrosion Science Y1 - 2008/09// VL - 50 IS - 9 M3 - Article SP - 2588 EP - 2595 SN - 0010938X AB - Abstract: Two thicknesses of dogbone shaped 2024-T3 aluminum alloy specimens were notched and corroded prior to constant amplitude fatigue loading. The purpose of the subject research was to examine and characterize the effects of various levels of prior corrosion on the growth rate of short fatigue cracks. The specimens were notched and exposed to a corrosive environment per one of three defined protocols prior to experimentation. The notch was manually introduced at one edge of the test section of the specimen, which was later corroded to create a more natural site for crack origination. Fatigue crack nucleation was monitored and subsequent crack growth recorded, with results presented in the form of da/dN vs. ΔK curves. [Copyright &y& Elsevier] AB - Copyright of Corrosion Science is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Corrosion & anti-corrosives KW - Aluminum alloys -- Fatigue KW - Metals -- Corrosion fatigue KW - Nucleation KW - Metals -- Fatigue KW - Notched bar testing KW - Metallic surfaces KW - A. Aluminum KW - C. Corrosion fatigue KW - C. Pitting corrosion N1 - Accession Number: 34442758; Jones, Kimberli 1; Email Address: Kimberli.Jones@utah.edu; Shinde, Sachin R. 1; Clark, Paul N. 2; Hoeppner, David W. 1; Affiliations: 1: Department of Mechanical Engineering, University of Utah, 50 South Central Campus Drive, Salt Lake City, UT, USA; 2: United States Air Force, 6057 Box Elder Lane, Hill Air Force Base, UT, USA; Issue Info: Sep2008, Vol. 50 Issue 9, p2588; Thesaurus Term: Corrosion & anti-corrosives; Subject Term: Aluminum alloys -- Fatigue; Subject Term: Metals -- Corrosion fatigue; Subject Term: Nucleation; Subject Term: Metals -- Fatigue; Subject Term: Notched bar testing; Subject Term: Metallic surfaces; Author-Supplied Keyword: A. Aluminum; Author-Supplied Keyword: C. Corrosion fatigue; Author-Supplied Keyword: C. Pitting corrosion; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.corsci.2008.06.039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=34442758&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Iyer, Ram AU - Toda, Magdalena AU - Holsapple, Raymond T1 - On an Optical Inertial Navigation System—Part II. JO - IEEE Transactions on Automatic Control JF - IEEE Transactions on Automatic Control J1 - IEEE Transactions on Automatic Control PY - 2008/09// Y1 - 2008/09// VL - 53 IS - 8 M3 - Article SP - 1864 EP - 1875 SN - 00189286 AB - In Part I, we developed the optical transfer function of the lens-fiber system for quasi-monochromatic, incoherent excitation, and studied the properties of the kernel function. We also studied the cross-talk between the fibers of the lens-fiber system for a worker bee and an artificial eye, and showed that it is not significant. This allows us in this paper, to consider a mathematical idealization of a corneal surface as a continuum of lens-fiber systems. We consider this surface to be a regular immersion of class r ≥ 2 that is the image in R³ of a simply connected, open set in R². We study the change in the power propagated in the fiber due to virtual motions of the corneal surface and show that for motion along the axis, the power propagated is invariant. Finally, we show that the ego-motion estimation problem is well-posed for sufficiently rich quasi-monochromatic, incoherent excitation on an allowable, regular corneal surface, and further show that the solution does not depend on the parameterization of the surfaces or the parameters of the aircraft (such as mass and inertia matrix) on which the ONS is mounted. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Automatic Control is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INERTIAL navigation (Aeronautics) KW - AERONAUTICAL instruments KW - SPACE vehicles -- Guidance systems KW - OPTICAL fibers KW - ARTIFICIAL eyes KW - ELECTRIC machinery -- Excitation systems KW - KERNEL functions KW - RESEARCH aircraft KW - OPTICAL materials KW - MASS (Physics) KW - INERTIA (Mechanics) N1 - Accession Number: 34741701; Source Information: Sep2008, Vol. 53 Issue 8, p1864; Subject Term: INERTIAL navigation (Aeronautics); Subject Term: AERONAUTICAL instruments; Subject Term: SPACE vehicles -- Guidance systems; Subject Term: OPTICAL fibers; Subject Term: ARTIFICIAL eyes; Subject Term: ELECTRIC machinery -- Excitation systems; Subject Term: KERNEL functions; Subject Term: RESEARCH aircraft; Subject Term: OPTICAL materials; Subject Term: MASS (Physics); Subject Term: INERTIA (Mechanics); Subject Term: ; Number of Pages: 12p; ; Illustrations: 3 Black and White Photographs, 6 Diagrams; ; Document Type: Article; L3 - 10.1109/TAC.2008.929390 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=34741701&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Xuefei Li AU - Zhenlin Luo AU - Jun Bao AU - Chen Gao AU - Yalin Lu T1 - Combinatorial Screening of the BiDyYb Iron Garnet Material System for High Kerr Rotation Composition. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics J1 - IEEE Transactions on Magnetics PY - 2008/09// Y1 - 2008/09// VL - 44 IS - 9 M3 - Article SP - 2091 EP - 2094 SN - 00189464 AB - We investigated the (BixDyYb3-x -y)Fe5O12 ternary combinatorial composition spread with the goal of finding new compositions with a large magneto-optical effect for possible use as magneto-optical storage materials. High-throughput magneto-optical characterization of the spread showed that the Dy0.6Yb0.5Bi1.9Fe5O12 composition has the largest Kerr effect in this ternary system. After annealing at 690 °C for 1 h, a scaled-up thin-film sample of this composition has a remanent magnetization as high as 90% of its saturation magnetization, indicating a good storage application potential. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GARNET KW - MAGNETOOPTICS KW - MAGNETIZATION KW - THIN films KW - KERR electro-optical effect KW - IRON N1 - Accession Number: 34289552; Source Information: Sep2008, Vol. 44 Issue 9, p2091; Subject Term: GARNET; Subject Term: MAGNETOOPTICS; Subject Term: MAGNETIZATION; Subject Term: THIN films; Subject Term: KERR electro-optical effect; Subject Term: IRON; Subject Term: ; Number of Pages: 4p; ; Illustrations: 7 Graphs; ; Document Type: Article; L3 - 10.1109/TMAG.2008.2000736 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=34289552&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Frank, Geoffrey J. AU - Joo, James J. AU - Sanders, Brian AU - Garner, David M. AU - Murray, Andrew P. T1 - Mechanization of a High Aspect Ratio Wing for Aerodynamic Control. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2008/09// VL - 19 IS - 9 M3 - Article SP - 1101 EP - 1112 SN - 1045389X AB - Investigations are conducted to mechanize a controlled spanwise-varying airfoil camber change for a high aspect ratio wing, resulting in optimized aerodynamic performance for a aircraft that changes weight by 50% over its mission. Mechanisms to achieve these shape changes are designed based on two separate design methodologies: a rigid body kinematics approach and a compliant mechanism approach. A framework for optimizing mechanisms based on each approach is presented. Differences between the approaches are illustrated through the design of a mechanism for a specific set of airfoil shapes. Mechanisms are evaluated based on the error in the shapes and on the energy efficiency of the systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MECHANIZATION KW - KINEMATICS KW - AERODYNAMICS KW - AEROFOILS KW - MECHANICS (Physics) KW - adaptive wing KW - compliant mechanism KW - mechanism design KW - morphing aircraft KW - sensorcraft N1 - Accession Number: 34447818; Frank, Geoffrey J. 1; Email Address: geoffrey.frank@udri.udayton.edu; Joo, James J. 1; Sanders, Brian 2; Garner, David M. 3; Murray, Andrew P. 1; Affiliations: 1: University of Dayton, Dayton, Ohio 45469, USA; 2: Air Combat Command, Langley AFB, Langley, VA 23665, USA; 3: Air Vehicles Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Issue Info: Sep2008, Vol. 19 Issue 9, p1101; Thesaurus Term: MECHANIZATION; Subject Term: KINEMATICS; Subject Term: AERODYNAMICS; Subject Term: AEROFOILS; Subject Term: MECHANICS (Physics); Author-Supplied Keyword: adaptive wing; Author-Supplied Keyword: compliant mechanism; Author-Supplied Keyword: mechanism design; Author-Supplied Keyword: morphing aircraft; Author-Supplied Keyword: sensorcraft; Number of Pages: 12p; Illustrations: 12 Diagrams, 2 Charts, 2 Graphs; Document Type: Article L3 - 10.1177/1045389X08096734 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=34447818&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Cook, Martin L. T1 - Just War Thinking: Morality and Pragmatism in the Struggle Against Contemporary Threats. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College J1 - Parameters: U.S. Army War College PY - 2008/09// Y1 - 2008/09// VL - 38 IS - 3 M3 - Book Review SP - 142 EP - 143 SN - 00311723 AB - The article reviews the book "Just War Thinking: Morality and Pragmatism in the Struggle Against Contemporary Threats" by Eric Patterson. KW - JUST War Thinking: Morality & Pragmatism in the Struggle Against Contemporary Threats (Book) KW - PATTERSON, Eric KW - JUST war doctrine KW - NONFICTION N1 - Accession Number: 35650348; Source Information: Autumn2008, Vol. 38 Issue 3, p142; Subject Term: JUST War Thinking: Morality & Pragmatism in the Struggle Against Contemporary Threats (Book); Subject Term: PATTERSON, Eric; Subject Term: JUST war doctrine; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=35650348&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2008-11457-002 AN - 2008-11457-002 AU - Lyon, Don R. AU - Gunzelmann, Glenn AU - Gluck, Kevin A. T1 - A computational model of spatial visualization capacity. JF - Cognitive Psychology JO - Cognitive Psychology JA - Cogn Psychol Y1 - 2008/09// VL - 57 IS - 2 SP - 122 EP - 152 CY - Netherlands PB - Elsevier Science SN - 0010-0285 AD - Lyon, Don R., L3 Communications at Air Force Research Laboratory, 6030 South Kent Street, Mesa, AZ, US, 85212-6061 N1 - Accession Number: 2008-11457-002. PMID: 18314098 Partial author list: First Author & Affiliation: Lyon, Don R.; L3 Communications at Air Force Research Laboratory, Mesa, AZ, US. Release Date: 20080825. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Conference Information: International Conference on Cognitive Modeling. Conference Note: Portions of this research have been presented at the aforementioned conference and at the Annual Meeting of the Cognitive Science Society. Major Descriptor: Imagery; Memory; Visuospatial Ability; Computational Modeling. Classification: Human Experimental Psychology (2300). Population: Human (10); Male (30); Female (40). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 31. Issue Publication Date: Sep, 2008. AB - Visualizing spatial material is a cornerstone of human problem solving, but human visualization capacity is sharply limited. To investigate the sources of this limit, we developed a new task to measure visualization accuracy for verbally-described spatial paths (similar to street directions), and implemented a computational process model to perform it. In this model, developed within the Adaptive Control of Thought-Rational (ACT-R) architecture, visualization capacity is limited by three mechanisms. Two of these (associative interference and decay) are longstanding characteristics of ACT-R's declarative memory. A third (spatial interference) is a new mechanism motivated by spatial proximity effects in our data. We tested the model in two experiments, one with parameter-value fitting, and a replication without further fitting. Correspondence between model and data was close in both experiments, suggesting that the model may be useful for understanding why visualizing new, complex spatial material is so difficult. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - spatial visualization capacity KW - computational process model KW - memory KW - 2008 KW - Imagery KW - Memory KW - Visuospatial Ability KW - Computational Modeling KW - 2008 U1 - Sponsor: US Air Force Office of Scientific Research, US. Grant: 02HE01COR. Recipients: No recipient indicated U1 - Sponsor: Air Force Research Laboratory, Human Effectiveness Directorate. Grant: F1624-97-D-5000; FA8650-05- D-6502. Recipients: No recipient indicated DO - 10.1016/j.cogpsych.2007.12.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-11457-002&site=ehost-live&scope=site UR - don.lyon@mesa.afmc.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-11553-002 AN - 2008-11553-002 AU - Scaduto, Anne AU - Lindsay, Douglas AU - Chiaburu, Dan S. T1 - Leader influences on training effectiveness: Motivation and outcome expectation processes. JF - International Journal of Training and Development JO - International Journal of Training and Development Y1 - 2008/09// VL - 12 IS - 3 SP - 158 EP - 170 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 1360-3736 SN - 1468-2419 AD - Scaduto, Anne, Department of Psychology, Pennsylvania State University, 426 Beam Building, University Park, PA, US, 16802 N1 - Accession Number: 2008-11553-002. Partial author list: First Author & Affiliation: Scaduto, Anne; Department of Psychology, Pennsylvania State University, University Park, PA, US. Other Publishers: Blackwell Publishing. Release Date: 20080922. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Conference Information: Annual Conference of the Society for Industrial and Organizational Psychology, 23rd, Apr, 2008, San Francisco, CA, US. Conference Note: A previous version of this paper was presented at the aforementioned conference. Major Descriptor: Employee Characteristics; Leadership; Motivation; Personnel Training. Classification: Personnel Management & Selection & Training (3620). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 13. Issue Publication Date: Sep, 2008. AB - Training effectiveness is a function of trainee characteristics, training design and contextual factors. Social exchanges in the work environment have received less attention compared with other training effectiveness predictors. We focus on the extent to which leaders (through their relationships and exchanges with followers) influence skill transfer, maintenance and generalization. We also examine two intervening processes (training motivation and outcome expectancy). Our findings, based on surveys from 495 employees, argue for the importance of leader-member exchange for training transfer, with training motivation and outcome expectancy as intervening mechanisms. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - leader influences KW - training effectiveness KW - motivation KW - trainee characteristics KW - 2008 KW - Employee Characteristics KW - Leadership KW - Motivation KW - Personnel Training KW - 2008 DO - 10.1111/j.1468-2419.2008.00303.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-11553-002&site=ehost-live&scope=site UR - dchiaburu@psu.edu UR - douglas.lindsay@usafa.edu UR - azs105@psu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-15225-003 AN - 2008-15225-003 AU - Nademin, Elicia AU - Jobes, David A. AU - Pflanz, Steven E. AU - Jacoby, Aaron M. AU - Ghahramanlou-Holloway, Marjan AU - Campise, Rick AU - Joiner, Thomas AU - Wagner, Barry M. AU - Johnson, Leigh T1 - An invesitgation of interpersonal-psychological variables in air force suicides: A controlled-comparison study. JF - Archives of Suicide Research JO - Archives of Suicide Research JA - Arch Suicide Res Y1 - 2008/09// VL - 12 IS - 4 SP - 309 EP - 326 CY - United Kingdom PB - Taylor & Francis SN - 1381-1118 SN - 1543-6136 AD - Nademin, Elicia, Department of Clinical Psychology, Midwestern University, 19555 N. 59th Avenue, Glendale, AZ, US, 85308 N1 - Accession Number: 2008-15225-003. PMID: 18828034 Partial author list: First Author & Affiliation: Nademin, Elicia; Midwestern University, Glendale, AZ, US. Other Publishers: Springer. Release Date: 20090112. Correction Date: 20130218. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Psychology; Suicide; Interpersonal Relationships. Minor Descriptor: Theories. Classification: Behavior Disorders & Antisocial Behavior (3230); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Interpersonal-Psychological Survey; Acquired Capability to Suicide Scale; Interpersonal Needs Questionnaire DOI: 10.1037/t10483-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 18. Issue Publication Date: Sep, 2008. AB - Joiner's (2005) theory attributes suicide to an individual's acquired capability to enact self-harm, perceived burdensomeness, and thwarted belongingness. This study evaluated whether Joiner's theory could differentiate United States (US) Air Force (AF) personnel (n = 60) who died by suicide from a living active duty AF personnel comparison sample (n = 122). Responses from AF personnel on several scales assessing Joiner's constructs were compared to data from a random sample of postmortem investigatory files of AF personnel who died by suicide between 1996-2006. This research also introduced a newly designed measure, the Interpersonal-Psychological Survey (IPS), designed to assess the three components of Joiner's theory in one, easy-to-administer instrument. Analyses of the psychometric properties of the IPS support initial validation efforts to establish this scale as a predictive measure for suicide. Findings support that one's score on the Acquired Capability to Commit Suicide subscale of the IPS and the IPS overall score reliably distinguished between the two groups. The implications of these findings in relation to suicide prevention efforts in the US military are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - interpersonal variables KW - psychological variables KW - air force KW - suicides KW - Joiners theory KW - 2008 KW - Air Force Personnel KW - Psychology KW - Suicide KW - Interpersonal Relationships KW - Theories KW - 2008 DO - 10.1080/13811110802324847 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-15225-003&site=ehost-live&scope=site UR - EliciaN@Gmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-12319-014 AN - 2008-12319-014 AU - Ferrante, Claudia J . T1 - Review of The embezzler. JF - Human Resource Management JO - Human Resource Management JA - Hum Resour Manage Y1 - 2008///Fal 2008 VL - 47 IS - 3 SP - 659 EP - 661 CY - US PB - John Wiley & Sons SN - 0090-4848 SN - 1099-050X N1 - Accession Number: 2008-12319-014. Partial author list: First Author & Affiliation: Ferrante, Claudia J .; Department of Management, United States Air Force Academy, CO, US. Release Date: 20090202. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Review-Book. Language: English. Major Descriptor: Business; Theft. Classification: Criminal Behavior & Juvenile Delinquency (3236). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Reviewed Item: Auchincloss, Louis. The embezzler=Boston, MA: Houghton Mifflin Company. 277 pages; 1966. References Available: Y. Page Count: 3. Issue Publication Date: Fal 2008. AB - Reviews the book, The embezzler by Louis Auchincloss (1966). This business novel portrays one man's management and manipulation of human and financial capital to meet his personal needs and desires. The main characters in the novel are Guy Prime, an embezzler who created the circumstances leading to his embezzlement and subsequent imprisonment, and Rex Geer, his friend over the years leading to Guy's fall from Wall Street. Although it is based on the business world from decades ago, it has much to say about some contemporary concepts that today's workers ponder--the impact of social networks, the struggle for work-life balance, and expectations for what constitutes success in life. In this novel, the author subtly yet effectively makes the point that self-perception can be an effective tool when reality is too painful to face. This novel is a welcome read for practitioners and organizational researchers. By pointing out the fact that human nature and concern for self may prove stronger than any benefit gained from the application of management theory to practical workplace situations, it is a powerful reminder that corporate embezzlement was around long before the Enron debacle and is likely to plague the business world well into the future. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - embezzlement KW - business KW - 2008 KW - Business KW - Theft KW - 2008 U2 - Auchincloss, Louis. (1966); The embezzler; Boston, MA: Houghton Mifflin Company. 277 pages DO - 10.1002/hrm.20237 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-12319-014&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-12990-005 AN - 2008-12990-005 AU - Smith, Suzanne D. T1 - Dynamic characteristics and human perception of vibration aboard a military propeller aircraft. JF - International Journal of Industrial Ergonomics JO - International Journal of Industrial Ergonomics JA - Int J Ind Ergon Y1 - 2008/09//Sep-Oct, 2008 VL - 38 IS - 9-10 SP - 868 EP - 879 CY - Netherlands PB - Elsevier Science SN - 0169-8141 AD - Smith, Suzanne D., Air Force Research Laboratory, AFRL/RHPA, 2800 Q Street, Wright-Patterson AFB, OH, US, 45433-7947 N1 - Accession Number: 2008-12990-005. Partial author list: First Author & Affiliation: Smith, Suzanne D.; Air Force Research Laboratory, AFRL/RHPA, OH, US. Release Date: 20090831. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft; Human Factors Engineering; Military Personnel; Perception; Vibration. Minor Descriptor: Environment. Classification: Human Factors Engineering (4010); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: Sep-Oct, 2008. AB - This study investigated the dynamic characteristics and human perception of higher-frequency multi-axis vibration associated with a military propeller aircraft environment. Triaxial accelerations were measured at the interfaces between the occupant and aircraft seat surface (seat pan and seat back) to evaluate and compare the effects of the aircraft seat fitted with different cushions. While all cushions showed a significant reduction in the X-axis seat pan vibration as compared to the original operational seat cushion at the blade passage frequency (BPF∼73.5 Hz), the associated accelerations remained significantly higher than the floor input accelerations. Transmissibility data confirmed these seat system characteristics at higher frequencies. A body region perception survey suggested that the subjects were most sensitive to the BPF component of the operational exposure. In contrast, the weighted acceleration levels (ISO 2631-1: 1997) suggested that the subjects would perceive the highest vibration in the vertical (Z) direction at the seat pan with substantial contributions in the X direction from the seat back, particularly at the propeller rotation frequency (PRF∼18.5 Hz). The overall Vibration Total Value (ISO 2631-1: 1997) suggested that the operational exposures would be perceived as being 'not uncomfortable' to 'a little uncomfortable.' Relevance to industry: Effective multi-axis vibration mitigation strategies depend on the relationships between the location, direction, and level of vibration entering the occupant and human perception of the exposure. Current human exposure guidelines may not optimally reflect these relationships for assessing higher-frequency propeller aircraft work environments and should be applied with caution. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - dynamic characteristics KW - human perception KW - higher frequency multi axis vibration KW - military propeller aircraft environment KW - 2008 KW - Aircraft KW - Human Factors Engineering KW - Military Personnel KW - Perception KW - Vibration KW - Environment KW - 2008 U1 - Sponsor: Office of Naval Research, Department of Navy. Grant: 63706NM0096.004-6813. Recipients: No recipient indicated DO - 10.1016/j.ergon.2007.10.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-12990-005&site=ehost-live&scope=site UR - suzanne.smith@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Rothwell, E.J. AU - Perry, B. AU - Stenholm, G.J. T1 - Time-domain non-destructive evaluation of layered materials using E-pulse technique. JO - Electronics Letters JF - Electronics Letters Y1 - 2008/08/28/ VL - 44 IS - 18 M3 - Article SP - 1055 EP - 1057 SN - 00135194 AB - The E-pulse technique has been suggested as a method for evaluating the health of material coatings on aircraft. In this Letter, the method is validated using experimental data acquired in the time domain. Results show that changes in the temporal reflected field may be used to determine if the properties of the coating have changed and necessitate a repair, or whether an improper repair has been made. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DATA analysis KW - AIRPLANES KW - PULSE modulation (Electronics) KW - TIME-domain analysis KW - SURFACE coatings N1 - Accession Number: 34038429; Rothwell, E.J. 1; Email Address: rothwell@egr.msu.edu; Perry, B. 1; Stenholm, G.J. 2; Affiliations: 1: Michigan State University, Department of Electrical and Computer Engineering, East Lansing, USA; 2: Air Force Research Laboratory, Wright Patterson AFB, USA; Issue Info: 8/28/2008, Vol. 44 Issue 18, p1055; Thesaurus Term: DATA analysis; Thesaurus Term: AIRPLANES; Subject Term: PULSE modulation (Electronics); Subject Term: TIME-domain analysis; Subject Term: SURFACE coatings; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 2 Charts; Document Type: Article L3 - 10.1049/el:20082073 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=34038429&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Jacobson, Isabel G. AU - Ryan, Margaret A. K. AU - Hooper, Tomoko I. AU - Smith, Tyler C. AU - Amoroso, Paul J. AU - Boyko, Edward J. AU - Gackstetter, Gary D. AU - Wells, Timothy S. AU - Bell, Nicole S. T1 - Alcohol Use and Alcohol-Related Problems Before and After Military Combat Deployment. JO - JAMA: Journal of the American Medical Association JF - JAMA: Journal of the American Medical Association Y1 - 2008/08/13/ VL - 300 IS - 6 M3 - Article SP - 663 EP - 675 SN - 00987484 AB - The article reports on the results of research which was conducted in an effort to determine whether deployment with armed combat exposure was associated with new onset or continued alcohol consumption, binge drinking and alcohol related problems. Researchers evaluated the binge drinking and alcohol related problems that were present in over 5,000 soldiers. They found that reserve and National Guard personnel and younger service members who deploy with reported combat exposures are at an increased risk of new onset heavy weekly drinking, binge drinking and alcohol related problems. KW - VETERANS -- Substance use KW - DRINKING of alcoholic beverages -- Research KW - DRINKING behavior KW - BINGE drinking KW - ALCOHOLISM KW - WAR -- Psychological aspects N1 - Accession Number: 33591884; Jacobson, Isabel G. 1; Ryan, Margaret A. K. 1; Hooper, Tomoko I. 2; Smith, Tyler C. 1; Amoroso, Paul J. 3; Boyko, Edward J. 4; Gackstetter, Gary D. 5; Wells, Timothy S. 6; Bell, Nicole S. 7; Source Information: 8/13/2008, Vol. 300 Issue 6, p663; Subject: VETERANS -- Substance use; Subject: DRINKING of alcoholic beverages -- Research; Subject: DRINKING behavior; Subject: BINGE drinking; Subject: ALCOHOLISM; Subject: WAR -- Psychological aspects; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=33591884&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Ostrom, Christopher Sean AU - Martin, William Jay AU - Zacharakis, Jeff T1 - Autopoiesis and the Cosmology of Postmodern Adult Education. JO - Adult Education Quarterly JF - Adult Education Quarterly Y1 - 2008/08// VL - 58 IS - 4 M3 - Article SP - 299 EP - 317 SN - 07417136 AB - From the time adult education emerged as a field of study, it has suffered a crisis of identity by which the field is increasingly defined by a lack of consensus regarding its larger aspirations and operational boundaries. The purpose of this article is to begin deconstructing and reconstructing the field of adult education phenomenologically by (a) exploring the basic historical assumptions and socially constructed, collectivist realities on which adult education founded its theory and practice in the modern era, (b) elucidating the postmodern turn these realities have taken in the past half century, and (c) reconciling adult education's historical mission with new realities facing the field. This article ultimately concludes that any viable conception of adult education must not only make postmodern individuals better competitors in the global marketplace, but must also help them and the organizations they comprise to define themselves within a larger autopoietic web of relations. [ABSTRACT FROM AUTHOR] AB - Copyright of Adult Education Quarterly is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADULT education KW - EDUCATIONAL change KW - AUTOPOIESIS KW - POSTMODERNISM & education KW - EDUCATION -- Aims & objectives KW - EDUCATION -- Philosophy KW - autopoiesis KW - community KW - constructionism KW - education KW - identity KW - individualism KW - phenomenology KW - postmodem KW - social N1 - Accession Number: 33391004; Ostrom, Christopher Sean 1; Email Address: chris@ostrom.biz; Martin, William Jay 2; Zacharakis, Jeff 3; Source Information: Aug2008, Vol. 58 Issue 4, p299; Subject: ADULT education; Subject: EDUCATIONAL change; Subject: AUTOPOIESIS; Subject: POSTMODERNISM & education; Subject: EDUCATION -- Aims & objectives; Subject: EDUCATION -- Philosophy; Author-Supplied Keyword: autopoiesis; Author-Supplied Keyword: community; Author-Supplied Keyword: constructionism; Author-Supplied Keyword: education; Author-Supplied Keyword: identity; Author-Supplied Keyword: individualism; Author-Supplied Keyword: phenomenology; Author-Supplied Keyword: postmodem; Author-Supplied Keyword: social; Number of Pages: 19p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=33391004&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Mollenhauer, D.H. AU - Fredrickson, B.M. AU - Schoeppner, G.A. AU - Iarve, E.V. AU - Palazotto, A.N. T1 - Moiré interferometry measurements of composite laminate repair behavior: Influence of grating thickness on interlaminar response JO - Composites: Part A, Applied Science & Manufacturing JF - Composites: Part A, Applied Science & Manufacturing Y1 - 2008/08// VL - 39 IS - 8 M3 - Article SP - 1322 EP - 1330 SN - 1359835X AB - Abstract: Bonded scarf-lap and step-lap specimens representative of fully repaired composites were fabricated from two quasi-isotropic sixteen ply panels made from IM6/3501-6 material. The full-field optical displacement measuring technique, moiré interferometry, was used to gather detailed information about the distribution of interlaminar strain on the edge of these specimens. Highly detailed 3D numerical models were constructed for both specimen geometries and results obtained. Instead of modeling idealized bondline geometries, the geometries were obtained through digitization of micrographs of the actual test specimens. As a further enhancement on a second set of models, a thin resin layer representing the moiré interferometry diffraction grating was added to each model. Comparisons between the model and experimental results showed that a localized effect over the bondline was more accurately represented when the grating layer was modeled. Surprisingly, it was found that in regions away from the bondline, the through-thickness interlaminar normal strain was found to be amplified by the presence of the modeled grating. A series of parametric models were conducted on a laminated composite while varying grating thickness and modulus to further examine this phenomenon. A mechanism for the strain amplification is proposed. [Copyright &y& Elsevier] AB - Copyright of Composites: Part A, Applied Science & Manufacturing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL measurements KW - INTERFEROMETRY KW - NUMERICAL analysis KW - MICROGRAPHICS KW - DIFFRACTION gratings KW - STRAINS & stresses (Mechanics) KW - A. Carbon fiber KW - B. Optical techniques KW - C. Numerical analysis KW - D. Mechanical testing KW - E. Joints/Joining N1 - Accession Number: 33530694; Mollenhauer, D.H. 1; Email Address: David.Mollenhauer@wpafb.af.mil; Fredrickson, B.M. 2; Schoeppner, G.A. 1; Iarve, E.V. 3; Palazotto, A.N. 2; Affiliations: 1: Air Force Research Laboratory, AFRL/RXBC, Wright Patterson AFB, Ohio, 45433-7750, United States; 2: Air Force Institute of Technology, AFIT/ENY, Wright Patterson AFB, Ohio, 45433, United States; 3: University of Dayton Research Institute, 300 College Park Avenue, Dayton, Ohio, 45469-0168, United States; Issue Info: Aug2008, Vol. 39 Issue 8, p1322; Subject Term: OPTICAL measurements; Subject Term: INTERFEROMETRY; Subject Term: NUMERICAL analysis; Subject Term: MICROGRAPHICS; Subject Term: DIFFRACTION gratings; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: A. Carbon fiber; Author-Supplied Keyword: B. Optical techniques; Author-Supplied Keyword: C. Numerical analysis; Author-Supplied Keyword: D. Mechanical testing; Author-Supplied Keyword: E. Joints/Joining; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.compositesa.2008.02.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=33530694&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 105713935 T1 - Visual misperception in aviation: glide path performance in a black hole environment. AU - Gibb R AU - Schvaneveldt R AU - Gray R AU - Gibb, Randy AU - Schvaneveldt, Roger AU - Gray, Rob Y1 - 2008/08// N1 - Accession Number: 105713935. Language: English. Entry Date: 20081212. Revision Date: 20170228. Publication Type: journal article; research. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. NLM UID: 0374660. KW - Aviation -- Equipment and Supplies KW - Visual Perception -- Physiology KW - Adolescence KW - Adult KW - Aviation -- Methods KW - Computer Simulation KW - Light KW - Middle Age KW - Optical Illusions KW - Task Performance and Analysis SP - 699 EP - 711 JO - Human Factors JF - Human Factors JA - HUM FACTORS VL - 50 IS - 4 PB - Sage Publications Inc. AB - Objective: We sought to improve understanding of visual perception in aviation to mitigate mishaps in approaches to landing.Background: Research has attempted to identify the most salient visual cues for glide path performance in impoverished visual conditions. Numerous aviation accidents caused by glide path overestimation (GPO) have occurred when a low glide path was induced by a black hole illusion (BHI) in featureless terrain during night approaches.Method: Twenty pilots flew simulated approaches under various visual cues of random terrain objects and approach lighting system (ALS) configurations. Performance was assessed relative to the desired 3 degrees glide path in terms of precision, bias, and stability.Results: With the high-ratio (long, narrow) runway, the overall performance between 8.3 and 0.9 km from the runway depicted a concave approach shape found in BHI mishaps. The addition of random terrain objects failed to improve glide path performance, and an ALS commonly used at airports induced GPO and the resulting low glide path. The worst performance, however, resulted from a combination ALS consisting of both side and approach lights. Surprisingly, novice pilots flew more stable approaches than did experienced pilots.Conclusions: Low, unsafe approaches occur frequently in conditions with limited global and local visual cues. Approach lights lateral of the runway may counter the bias of the BHI. The variability suggested a proactive, cue-seeking behavior among experienced pilots as compared with novice pilots.Application: Visual spatial disorientation training in flight simulators should be used to demonstrate visual misperceptions in black hole environments and reduce pilots' confidence in their limited visual capabilities. SN - 0018-7208 AD - US Air Force Academy, Colorado 80840, USA U2 - PMID: 18767527. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105713935&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Macgillivray, Jeff T. T1 - Trillion Cell CAD-Based Cartesian Mesh Generator for the Finite-Difference Time-Domain Method on a Single-Processor 4-GB Workstation. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2008/08//Aug2008 Part 1 Y1 - 2008/08//Aug2008 Part 1 VL - 56 IS - 8 M3 - Article SP - 2187 EP - 2190 SN - 0018926X AB - In this paper, a robust, computer-aided design (CAD)-based, highly accurate and fast Cartesian mesh generation technique for a colossal number of cells capacity using a minimal single-processor computing resource is presented. The cells are generated in Yee format for the finite-difference time-domain (FDTD) method. There are three key techniques presented that achieve this capability: a highly efficient data storage ray tracing method, a highly accurate ray-facet intersection test, and a novel exact arithmetic tie-breaking algorithm for rays intersecting facet edges and vertices. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER-aided design KW - COMPUTER-aided engineering KW - ALGORITHMS KW - FINITE differences KW - ELECTROMAGNETISM KW - MAGNETIC induction KW - MAGNETISM KW - ELECTROMAGNETIC induction KW - ELECTROMAGNETIC theory KW - TRANSPORT theory (Mathematics) -- Discrete ordinates method N1 - Accession Number: 34124110; Source Information: Aug2008 Part 1, Vol. 56 Issue 8, p2187; Subject Term: COMPUTER-aided design; Subject Term: COMPUTER-aided engineering; Subject Term: ALGORITHMS; Subject Term: FINITE differences; Subject Term: ELECTROMAGNETISM; Subject Term: MAGNETIC induction; Subject Term: MAGNETISM; Subject Term: ELECTROMAGNETIC induction; Subject Term: ELECTROMAGNETIC theory; Subject Term: TRANSPORT theory (Mathematics) -- Discrete ordinates method; Subject Term: ; Number of Pages: 4p; ; Illustrations: 2 Diagrams, 5 Graphs; ; Document Type: Article; L3 - 10.1109/TAP.2008.926790 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=34124110&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Wisman, David AU - Ganguly, Biswa AU - Marcum, S. Douglas T1 - High-Speed Visualization of Flame Reaction Zone Using a Positive Point-to-Plane Corona Discharge. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2008/08//Aug2008 Part 1 of 5 Y1 - 2008/08//Aug2008 Part 1 of 5 VL - 36 IS - 4 M3 - Article SP - 928 EP - 929 SN - 00933813 AB - We have used a pulsed corona discharge to obtain time-resolved spectrally filtered 337.1-nm N2 (C → B) emission images for the visualization of the reaction zone (flame front) of a premixed propane-air flame. The low-density region at the flame front allows one to guide the streamer along the reaction zone during the initial stages of the pulsed discharge, while the temperature-dependent electron-detachment/attachment rate allows for the increased conductivity of the plasma after the discharge has been fully established. Images with 500-shot accumulations are presented to clearly illustrate the concept, while the ability for greater time resolution is discussed as an attractive means for imaging small-scale turbulent instabilities in a flame reaction zone. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROPANE flames KW - ELECTRIC discharges KW - CORONA (Electricity) KW - PROPANE KW - FLAME KW - ELECTRONS N1 - Accession Number: 34216989; Source Information: Aug2008 Part 1 of 5, Vol. 36 Issue 4, p928; Subject Term: PROPANE flames; Subject Term: ELECTRIC discharges; Subject Term: CORONA (Electricity); Subject Term: PROPANE; Subject Term: FLAME; Subject Term: ELECTRONS; Subject Term: ; Number of Pages: 2p; ; Illustrations: 3 Graphs; ; Document Type: Article; L3 - 10.1109/TPS.2008.922430 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=34216989&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Sands, Brian L. AU - Ganguly, Biswa N. AU - Tachibana, Kunihide T1 - Time-Resolved Imaging of "Plasma Bullets" in a Dielectric Capillary Atmospheric Pressure Discharge. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2008/08//Aug2008 Part 1 of 5 Y1 - 2008/08//Aug2008 Part 1 of 5 VL - 36 IS - 4 M3 - Article SP - 956 EP - 957 SN - 00933813 AB - Temporally resolved images acquired using a 5-ns gated intensified charge-coupled device camera show the dynamical behavior of a plasma jet emanating from the end of a dielectric capillary operating at atmospheric pressure. Broadband emission and filtered emission from excited Ar, He, N2 and N2+ species were acquired. The properties of the highly localized so-called "plasma bullets" that make up the plasma jet strongly resemble the properties of cathode-directed streamers in positive corona discharges. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA jets KW - PLASMA devices KW - ATMOSPHERIC pressure KW - CHARGE coupled devices KW - DIELECTRICS KW - CORONA (Electricity) N1 - Accession Number: 34217003; Source Information: Aug2008 Part 1 of 5, Vol. 36 Issue 4, p956; Subject Term: PLASMA jets; Subject Term: PLASMA devices; Subject Term: ATMOSPHERIC pressure; Subject Term: CHARGE coupled devices; Subject Term: DIELECTRICS; Subject Term: CORONA (Electricity); Subject Term: ; Number of Pages: 2p; ; Illustrations: 1 Black and White Photograph; ; Document Type: Article; L3 - 10.1109/TPS.2008.917789 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=34217003&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kuo, Spencer P. AU - Pedersen, Todd AU - Mills, Travis T1 - Lateral Distribution of Atomic Oxygen Flux Produced by an Array of Three Fan-Shaped Plasma Torches. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2008/08//Aug2008 Part 1 of 5 Y1 - 2008/08//Aug2008 Part 1 of 5 VL - 36 IS - 4 M3 - Article SP - 1056 EP - 1057 SN - 00933813 AB - An array of three fan-shaped plasma torches is designed to be a source of atomic oxygen flux for biological decontamination applications. A narrowband-filtered CCD camera is used to record the intensities of 777.4-nm emissions from the torches and reveal the lateral distribution of the atomic oxygen flux produced in the plasma effluent of the torches. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXYGEN KW - PLASMA jets KW - CCD cameras KW - ATOMS KW - ELECTRIC filters N1 - Accession Number: 34217053; Source Information: Aug2008 Part 1 of 5, Vol. 36 Issue 4, p1056; Subject Term: OXYGEN; Subject Term: PLASMA jets; Subject Term: CCD cameras; Subject Term: ATOMS; Subject Term: ELECTRIC filters; Subject Term: ; Number of Pages: 2p; ; Illustrations: 1 Black and White Photograph; ; Document Type: Article; L3 - 10.1109/TPS.2004.924556 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=34217053&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Shiels, Meredith S. AU - Cole, Stephen R. AU - Wegner, Scott AU - Armenian, Haroutune AU - Chmiel, Joan S. AU - Ganesan, Anuradha AU - Marconi, Vincent C. AU - Otoniel&Martinez-Maza AU - Martinson, Jeremy AU - Weintrob, Amy AU - Jacobson, Lisa P. AU - Crum-Cianflone, Nancy F. T1 - Effect of HAART on Incident Cancer and Noncancer AIDS Events Among Male HIV Seroconverters. JO - JAIDS: Journal of Acquired Immune Deficiency Syndromes JF - JAIDS: Journal of Acquired Immune Deficiency Syndromes Y1 - 2008/08//8/1/2008 VL - 48 IS - 4 M3 - Article SP - 485 EP - 490 SN - 15254135 AB - The article offers information on the impact of highly active antiretroviral therapy (HAART) on the prevention of AIDS-defining cancers. It is revealed that HAART in HIV-infected men seems equally protective against first AIDS-defining cancers among male HIV seroconverters and other first AIDS-defining events. KW - HIV infections -- Treatment KW - HIV infections KW - AIDS (Disease) -- Prevention KW - AIDS-related complex KW - SEXUALLY transmitted diseases KW - AIDS-associated lymphoma KW - cancers KW - epidemioIogy KW - highly active antiretroviral therapy KW - Kaposi sarcoma KW - opportunistic infections N1 - Accession Number: 35953926; Shiels, Meredith S. 1; Email Address: mshiels@jhsph.edu; Cole, Stephen R. 1; Wegner, Scott 2; Armenian, Haroutune 1; Chmiel, Joan S. 3; Ganesan, Anuradha 1,4; Marconi, Vincent C. 2,5; Otoniel&Martinez-Maza 6; Martinson, Jeremy 7; Weintrob, Amy 2,8; Jacobson, Lisa P. 1; Crum-Cianflone, Nancy F. 9; Source Information: 8/1/2008, Vol. 48 Issue 4, p485; Subject: HIV infections -- Treatment; Subject: HIV infections; Subject: AIDS (Disease) -- Prevention; Subject: AIDS-related complex; Subject: SEXUALLY transmitted diseases; Author-Supplied Keyword: AIDS-associated lymphoma; Author-Supplied Keyword: cancers; Author-Supplied Keyword: epidemioIogy; Author-Supplied Keyword: highly active antiretroviral therapy; Author-Supplied Keyword: Kaposi sarcoma; Author-Supplied Keyword: opportunistic infections; Number of Pages: 6p; Illustrations: 2 Charts, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=35953926&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Bowman, Bruce R. AU - Kent Tobiska, W. AU - Kendra, Michael J. T1 - The thermospheric semiannual density response to solar EUV heating JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2008/08// VL - 70 IS - 11/12 M3 - Article SP - 1482 EP - 1496 SN - 13646826 AB - Abstract: The goal of this study was to characterize the thermospheric semiannual density response to solar heating during the last 35 years. Historical radar observational data have been processed with special orbit perturbations on 28 satellites with perigee heights ranging from 200 to 1100km. Approximately 225,000 very accurate average daily density values at perigee have been obtained for all satellites using orbit energy dissipation rates. The semiannual variation has been found to be extremely variable from year to year. The magnitude of the maximum yearly difference, from the July minimum to the October maximum, is used to characterize the yearly semiannual variability. It has been found that this maximum difference can vary by as much as 100% from one year to the next. A high correlation has been found between this maximum difference and solar EUV data. The semiannual variation for each year has been characterized based on analyses of annual and semiannual cycles, using Fourier analysis, and equations have been developed to characterize this yearly variability. The use of new solar indices in the EUV and FUV wavelengths is shown to very accurately describe the semiannual July minimum phase shifting and the variations in the observed yearly semiannual amplitude. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Solar heating KW - Solar thermal energy KW - Energy dissipation KW - Fourier analysis KW - Neutral density KW - Semiannual variation KW - Solar EUV KW - Thermosphere N1 - Accession Number: 33530729; Bowman, Bruce R. 1; Email Address: bruce.bowman@peterson.af.mil; Kent Tobiska, W. 2; Email Address: ktobiska@spacenvironment.net; Kendra, Michael J. 3; Email Address: michael.kendra@hanscom.af.mil; Affiliations: 1 : Air Force Space Command, AFSPC/A9AC, 250 S. Peterson Blvd, Ste 116, Peterson AFB, CO 80914, USA; 2 : Space Environment Technologies, 1676 Palisades Dr., Pacific Palisades, CA 90272, USA; 3 : Air Force Research Laboratory, AFRL/RVBYB, 29 Randolph Road, Hanscom AFB, MA 01731-3010, USA; Source Info: Aug2008, Vol. 70 Issue 11/12, p1482; Thesaurus Term: Solar heating; Thesaurus Term: Solar thermal energy; Subject Term: Energy dissipation; Subject Term: Fourier analysis; Author-Supplied Keyword: Neutral density; Author-Supplied Keyword: Semiannual variation; Author-Supplied Keyword: Solar EUV; Author-Supplied Keyword: Thermosphere; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.jastp.2008.04.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=8gh&AN=33530729&site=ehost-live&scope=site DP - EBSCOhost DB - 8gh ER - TY - JOUR AU - KOTHERA, CURT S. AU - LEO, DONALD J. AU - LACY, SETH L. T1 - Characterization and Modeling of the Nonlinear Response of Ionic Polymer Actuators. JO - Journal of Vibration & Control JF - Journal of Vibration & Control Y1 - 2008/08// VL - 14 IS - 8 M3 - Article SP - 1151 EP - 1173 SN - 10775463 AB - Ionic polymers are compliant, low density materials that operate under low voltage levels as transducers. They can be used as both sensors and actuators for various applications, primarily those involving flexible structures. While some debate continues over the dominant physical mechanisms of actuation, several model forms have been proposed. The majority of these existing models are linear relationships between the applied potential and the strain generated. However, nonlinear characteristics have been observed in both the electrical and mechanical response of cantilever actuators, including harmonic distortion in the sinusoidal time response and a shifting frequency response for increased input levels. Characterization results indicate that the nonlinear mechanisms are dynamic, since they have dominance at low frequencies, but are essentially negligible as the excitation frequency increases. This research uses knowledge gained from the characterization results to develop a dynamic model that can predict the observed nonlinear behavior. The empirical model is constructed from input-output data collected using a Gaussian input current signal and is validated against the measured frequency response function and single-frequency sinusoidal responses. The basic model form has a dynamic nonlinearity on the input to an underlying nonlinear system. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Vibration & Control is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADDITION polymerization KW - NONLINEAR models (Statistics) KW - MODELING (Sculpture) KW - COMPLIANT platforms KW - TRANSDUCERS KW - FLEXIBLE structures KW - characterization KW - identification KW - Ionic polymer KW - modeling KW - nonlinear N1 - Accession Number: 34262528; KOTHERA, CURT S. 1; Email Address: ckothera@vt.edu; LEO, DONALD J. 1; LACY, SETH L. 2; Source Information: Aug2008, Vol. 14 Issue 8, p1151; Subject: ADDITION polymerization; Subject: NONLINEAR models (Statistics); Subject: MODELING (Sculpture); Subject: COMPLIANT platforms; Subject: TRANSDUCERS; Subject: FLEXIBLE structures; Author-Supplied Keyword: characterization; Author-Supplied Keyword: identification; Author-Supplied Keyword: Ionic polymer; Author-Supplied Keyword: modeling; Author-Supplied Keyword: nonlinear; Number of Pages: 23p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=34262528&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 2008-10947-005 AN - 2008-10947-005 AU - Heilmann, Sharon G. AU - Holt, Daniel T. AU - Rilovick, Christine Y. T1 - Effects of career plateauing on turnover: A test of a model. JF - Journal of Leadership & Organizational Studies JO - Journal of Leadership & Organizational Studies Y1 - 2008/08// VL - 15 IS - 1 SP - 59 EP - 68 CY - US PB - Sage Publications SN - 1548-0518 SN - 1939-7089 N1 - Accession Number: 2008-10947-005. Other Journal Title: Journal of Leadership Studies. Partial author list: First Author & Affiliation: Heilmann, Sharon G.; United States Air Force Academy, Colorado Springs, CO, US. Other Publishers: Baker College Publishing Co. Release Date: 20080825. Correction Date: 20120827. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Employee Turnover; Job Satisfaction; Job Search; Occupational Mobility; Organizational Commitment. Minor Descriptor: Occupational Success; Organizations; Questionnaires. Classification: Personnel Evaluation & Job Performance (3630). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Kuder-Richardson 20; Job Search Behavior Index DOI: 10.1037/t08832-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Aug, 2008. AB - Completed questionnaires from 223 organizational members were analyzed to test the extent to which career plateaus were positively associated with intentions to leave and that structure and content plateaus explained unique variation in turnover intentions after considering job satisfaction, organizational commitment, job search behavior, and several demographic characteristics. Findings supported both of these hypotheses. The authors also found that career plateaus influenced turnover intentions differently than job satisfaction and commitment in that plateaus directly influenced intentions rather than being mediated through job search behaviors. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - turnover KW - organizations KW - job search behaviors KW - job satisfaction KW - organizational commitment KW - career plateaus KW - 2008 KW - Employee Turnover KW - Job Satisfaction KW - Job Search KW - Occupational Mobility KW - Organizational Commitment KW - Occupational Success KW - Organizations KW - Questionnaires KW - 2008 DO - 10.1177/1548051808317999 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-10947-005&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-09272-003 AN - 2008-09272-003 AU - Caldwell, John A. AU - Caldwell, J. Lynn AU - Schmidt, Regina M. T1 - Alertness management strategies for operational contexts. JF - Sleep Medicine Reviews JO - Sleep Medicine Reviews JA - Sleep Med Rev Y1 - 2008/08// VL - 12 IS - 4 SP - 257 EP - 273 CY - Netherlands PB - Elsevier Science SN - 1087-0792 AD - Caldwell, John A., Archinoetics, LLC, Topa Financial Center, 700 Bishop Street, Suite 2000, Honolulu, HI, US, 96813 N1 - Accession Number: 2008-09272-003. PMID: 18359253 Partial author list: First Author & Affiliation: Caldwell, John A.; Archinoetics, LLC, Topa Financial Center, Honolulu, HI, US. Release Date: 20090413. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Fatigue; Sleep Deprivation; Working Conditions. Minor Descriptor: Adjustment. Classification: Health & Mental Health Treatment & Prevention (3300); Working Conditions & Industrial Safety (3670). Population: Human (10). Methodology: Literature Review. References Available: Y. Page Count: 17. Issue Publication Date: Aug, 2008. AB - This review addresses the problem of fatigue (on–the–job–sleepiness) attributable to sleep loss in modern society and the scientifically proven strategies useful for reducing fatigue-related risks. Fatigue has become pervasive because many people work non-standard schedules, and/or they consistently fail to obtain sufficient sleep. Sleep restriction, sleep deprivation, and circadian desynchronization produce a variety of decrements in cognitive performance as well as an array of occupational and health risks. A number of real-world mishaps have resulted from performance failures associated with operator sleepiness. In some cases, fatigue/sleepiness is unavoidable, at least temporarily, due to job-related or other factors, but in other cases, fatigue/sleepiness results from poor personal choices. Furthermore, some individuals are more vulnerable to the effects of sleep loss than others. Fortunately, fatigue-related risks can be mitigated with scientifically valid alertness-management strategies. Proper work/rest scheduling and good sleep hygiene are of primary importance. If sleep time is available but sleep is difficult to obtain, sleep-inducing medications and behavioral circadian-adjustment strategies are key. In fatiguing situations such as when sleep opportunities are temporarily inadequate, limiting time on tasks, strategic napping, and the potential use of alertness-enhancing compounds must be considered. To optimize any alertness management program, everyone must first be educated about the nature of the problem and the manner in which accepted remedies should be implemented. In the near future, objective fatigue-detection technologies may contribute substantially to the alleviation of fatigue-related risks in real-world operations. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - alertness management strategies KW - operational contexts KW - fatigue-related risks KW - modern society KW - 2008 KW - Fatigue KW - Sleep Deprivation KW - Working Conditions KW - Adjustment KW - 2008 DO - 10.1016/j.smrv.2008.01.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-09272-003&site=ehost-live&scope=site UR - Regina.Schmidt.ctr@wpafb.af.mil UR - Lynn.Caldwell@wpafb.af.mil UR - john@archinoetics.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-12588-007 AN - 2008-12588-007 AU - Cording, Margaret AU - Christmann, Petra AU - King, David R. T1 - Reducing causal ambiguity in acquisition integration: Intermediate goals as mediators of integration decisions and acquisition performance. JF - Academy of Management Journal JO - Academy of Management Journal JA - Acad Manage J Y1 - 2008/08// VL - 51 IS - 4 SP - 744 EP - 767 CY - US PB - Academy of Management SN - 0001-4273 SN - 1948-0989 AD - Cording, Margaret N1 - Accession Number: 2008-12588-007. Partial author list: First Author & Affiliation: Cording, Margaret; Jones Graduate School of Management, Rice University, Houston, TX, US. Release Date: 20080929. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Management Decision Making; Mergers and Acquisitions; Organizational Effectiveness. Classification: Organizational Behavior (3660). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 24. Issue Publication Date: Aug, 2008. AB - Integration is a difficult process, but one that is vital to acquisition performance. One reason acquirers encounter difficulties is that the integration process exhibits high levels of intrafirm linkage ambiguity--a lack of clarity in the causal link between integration decisions and their performance outcomes. We introduce the construct of intermediate goals as a mechanism that reduces intrafirm linkage ambiguity. Our structural model results, based on a sample of 129 horizontal acquisitions, indicate that the achievement of two intermediate goals (internal reorganization and market expansion) fully mediates the relationships between four integration decisions and acquisition performance. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - causal ambiguity KW - organizational acquisition KW - integration decisions KW - organizational performance KW - 2008 KW - Management Decision Making KW - Mergers and Acquisitions KW - Organizational Effectiveness KW - 2008 DO - 10.5465/AMJ.2008.33665279 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-12588-007&site=ehost-live&scope=site UR - david.king.2@us.af.mil UR - christmannp@business.rutgers.edu UR - cording@rice.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-09355-004 AN - 2008-09355-004 AU - Ashworth, Alan R. S. III AU - Vuong, Quoc C. AU - Rossion, Bruno AU - Tarr, Michael J. T1 - Recognizing rotated faces and Greebles: What properties drive the face inversion effect? JF - Visual Cognition JO - Visual Cognition JA - Vis cogn Y1 - 2008/08// VL - 16 IS - 6 SP - 754 EP - 784 CY - United Kingdom PB - Taylor & Francis SN - 1350-6285 SN - 1464-0716 AD - Vuong, Quoc C., Division of Psychology, Newcastle University, Henry Wellcome Building for Neuroecology, Newcastle upon Tyne, United Kingdom, NE2 4HH N1 - Accession Number: 2008-09355-004. Partial author list: First Author & Affiliation: Ashworth, Alan R. S. III; Air Force Research Laboratory, Brooks Air Force Base, San Antonio, TX, US. Release Date: 20080728. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Ashworth, Alan R. S. III. Major Descriptor: Face (Anatomy); Face Perception; Mental Rotation. Classification: Visual Perception (2323). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 31. Issue Publication Date: Aug, 2008. AB - The fact that faces are strongly affected by picture-plane inversion has often been cited as evidence for face-specific mechanisms. It is unclear, however, whether this 'face inversion effect' is driven by properties shared by faces or whether the effect is specific to faces as a category. To address this issue, we compared the recognition of faces and novel Greebles, which were specifically matched to faces along various stimulus dimensions. In two experiments, participants were required to name individual faces or Greebles following training at either single or multiple orientations. We found that performance systematically decreased with increasing misorientation from either the upright (Experiment 1) or nearest trained orientation (Experiment 2). Importantly, the magnitude of this orientation effect was similar for both faces and Greebles. Taken together, these results suggest that the face inversion effect may be a consequence of the visual homogeneity of the stimulus category, regardless of the category. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - face recognition KW - rotated faces KW - face inversion effect KW - 2008 KW - Face (Anatomy) KW - Face Perception KW - Mental Rotation KW - 2008 U1 - Sponsor: Brooks Air Force Base, Air Force Research Laboratory, US. Recipients: Ashworth, Alan R. S. III U1 - Sponsor: US Air Force Office of Scientific Research, US. Grant: F49620-91-J-0169. Recipients: Tarr, Michael J. DO - 10.1080/13506280701381741 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-09355-004&site=ehost-live&scope=site UR - q.c.vuong@ncl.ac.uk DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-11065-003 AN - 2008-11065-003 AU - Ramsey, Carol S. AU - Werchan, Paul M. AU - Isdahl, Wayne M. AU - Fischer, Joseph AU - Gibbons, John A. T1 - Acceleration tolerance at night with acute fatigue and stimulants. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2008/08// VL - 79 IS - 8 SP - 769 EP - 773 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Ramsey, Carol S., 10868 Ouray Street, Commerce City, CO, US, 80022 N1 - Accession Number: 2008-11065-003. PMID: 18717116 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Ramsey, Carol S.; Human Effectiveness Directorate, Biosciences & Protection Division, Aircrew Protection Branch and Fatigue Countermeasures Branch, Air Force Research Laboratory, Brooks City-Base, TX, US. Release Date: 20090706. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Acceleration Effects; Aircraft Pilots; CNS Stimulating Drugs; Fatigue; Surgeons. Minor Descriptor: Cognition; Performance. Classification: Military Psychology (3800); Psychopharmacology (2580). Population: Human (10); Male (30). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 5. Issue Publication Date: Aug, 2008. AB - Introduction: The impact of pharmacological agents on aviators concerns all flight surgeons. This study tested the related hypotheses that acute fatigue reduces + Cz tolerance and endurance, and that stimulants can partially reverse this impact. Additionally, the researchers attempted to develop a test battery sensitive enough to detect subtle differences in aviator cognition and performance among conditions. Methods: To determine the effect of fatigue on + Cz tolerance and the impact of stimulant use, 10 male centrifuge subjects, mean age 32, from Brooks City- Base, TX, were tested in a repeated measures study under five nighttime conditions following an average of 22 h of sustained wakefulness during their circadian nadir. Using a within-subject design, subjects received placebo, dextroamphetamine 10 mg, modafinil 200 mg, methylphenidate 10 mg, and pemoline 37,5 mg at night, and were tested during a daytime control session. Cognitive/performance tests were administered before each centrifuge run. Results: No difference in +Cz tolerance or endurance was detected among conditions. The cognitive/performance tests also did not detect any differences. Subject perception that anti-C straining maneuver (AGSM) difficulty was greater during the night placebo condition than during the daytime control, methylphenidate and modafinil night conditions reached statistical significance (P = 0,005, 0.012, 0,022, respectively). Discussion: Physiological changes during the circadian nadir following acute sleep deprivation do not appear to negatively impact +Gz tolerance. A standardized protocol sufficiently sensitive to detect subtle behavioral and performance effects would be useful to test and compare the effect of other pharmacological agents on aviators.. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - acceleration tolerance KW - fatigue KW - stimulants KW - aviators KW - flight surgeons KW - aviator cognition KW - aviator performance KW - 2008 KW - Acceleration Effects KW - Aircraft Pilots KW - CNS Stimulating Drugs KW - Fatigue KW - Surgeons KW - Cognition KW - Performance KW - 2008 DO - 10.3357/ASEM.1977.2008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-11065-003&site=ehost-live&scope=site UR - csramsey@juno.com DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Jacobson, Isabel G. AU - Smith, Tyler C. AU - Smith, Besa AU - Wells, Timothy S. AU - Reed, Robert J. AU - Ryan, Margaret A.K. T1 - US military service members vaccinated against smallpox in 2003 and 2004 experience a slightly higher risk of hospitalization postvaccination JO - Vaccine JF - Vaccine Y1 - 2008/07/29/ VL - 26 IS - 32 M3 - Article SP - 4048 EP - 4056 SN - 0264410X AB - Abstract: This study explores adverse events severe enough to warrant hospitalization that may have been associated with receiving the smallpox vaccine in conjunction with military service. Cox proportional hazards modeling was used to identify the risk of hospitalization among US active-duty military personnel during a 1-year period following receipt of the smallpox vaccine. The reference group consisted of active-duty military personnel who also received the smallpox vaccine after the conclusion of their health care observation period, allowing for comparison to a temporally and demographically similar population. The risk of hospitalization was slightly elevated among the postvaccine group for any-cause hospitalization and for hospitalization in several broad diagnostic categories. Hospitalizations for asthma, autoimmune diseases, and myopericarditis, were more likely in the postvaccine group. The increased risk of hospitalization for varied outcomes does not necessarily imply a cause–effect relationship, but it does offer areas for more focused study, using longitudinal data to explore the long-term impact of smallpox vaccination on the health of young adults. [Copyright &y& Elsevier] AB - Copyright of Vaccine is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Smallpox KW - Smallpox vaccine KW - Military service KW - Hospital care KW - Hospitalization KW - Military medicine KW - Myocarditis N1 - Accession Number: 33345309; Jacobson, Isabel G. 1; Email Address: Isabel.Jacobson@med.navy.mil; Smith, Tyler C. 1; Smith, Besa 1; Wells, Timothy S. 2; Reed, Robert J. 1; Ryan, Margaret A.K. 1; Affiliations: 1: Department of Defense Center for Deployment Health Research at the Naval Health Research Center, 140 Sylvester Road, San Diego, CA 92106-3521, USA; 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Issue Info: Jul2008, Vol. 26 Issue 32, p4048; Thesaurus Term: Smallpox; Subject Term: Smallpox vaccine; Subject Term: Military service; Subject Term: Hospital care; Author-Supplied Keyword: Hospitalization; Author-Supplied Keyword: Military medicine; Author-Supplied Keyword: Myocarditis; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.vaccine.2008.05.044 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=33345309&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Terry, N.B. AU - Naderi, N.A. AU - Pochet, M. AU - Moscho, A.J. AU - Lester, L.F. AU - Kovanis, V. T1 - Bandwidth enhancement of injection-locked 1.3 µm quantum-dot DFB laser. JO - Electronics Letters JF - Electronics Letters Y1 - 2008/07/17/ VL - 44 IS - 15 M3 - Article SP - 904 EP - 905 SN - 00135194 AB - Optical injection locking of a quantum-dot distributed-feedback laser at 1.3 µm is reported. Using an injection ratio of 5.3 dB, an optical detuning of -40 pm, and a slave laser biased at 20 mA, the modulation bandwidth of the injection-locked laser was 16.3 GHz. This is over four times higher than the modulation bandwidth of the free-running quantum-dot laser. At a slave laser bias of 5.0 mA, injection locking resulted in a resonance frequency of 21.9 GHz, over eleven times higher than the relaxation frequency of the free-running slave laser. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BROADBAND communication systems KW - BANDWIDTHS KW - DATA transmission systems KW - MODULATION (Electronics) KW - QUANTUM dots N1 - Accession Number: 33183611; Terry, N.B. 1; Naderi, N.A. 2; Pochet, M. 2; Moscho, A.J. 2; Lester, L.F. 2; Kovanis, V. 1; Affiliations: 1: Air Force Research Laboratory, USA; 2: University of New Mexico, Center for High Technology Materials, Albuquerque, USA; Issue Info: 7/17/2008, Vol. 44 Issue 15, p904; Thesaurus Term: BROADBAND communication systems; Thesaurus Term: BANDWIDTHS; Thesaurus Term: DATA transmission systems; Subject Term: MODULATION (Electronics); Subject Term: QUANTUM dots; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; Number of Pages: 2p; Illustrations: 2 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1049/el:20080732 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=33183611&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - ABST AU - Silvers, J. T1 - RADIOLOGICAL EMERGENCY MANAGEMENT: MANAGING RESOURCES & TARGETING EFFORTS IN LIGHT OF NEW TECHNOLOGIES AND PROTECTIVE ACTION GUIDANCE. JO - Health Physics JF - Health Physics Y1 - 2008/07/02/2008 Supplement VL - 95 M3 - Abstract SP - S91 EP - S91 SN - 00179078 AB - An abstract of the article "Radiological Emergency Management: Managing Resources & Targeting Efforts in Light of New Technologies and Protective Action Guidance," by J. Silvers is presented. KW - Emergency management N1 - Accession Number: 33009830; Silvers, J. 1; Affiliations: 1: United States Air Force, 928 Bayshore Drive, Niceville, FL 32578; Issue Info: 2008 Supplement, Vol. 95, pS91; Thesaurus Term: Emergency management; NAICS/Industry Codes: 913190 Other municipal protective services; NAICS/Industry Codes: 911290 Other federal protective services; NAICS/Industry Codes: 922190 Other Justice, Public Order, and Safety Activities; NAICS/Industry Codes: 912190 Other provincial protective services; NAICS/Industry Codes: 624230 Emergency and Other Relief Services; Number of Pages: 1/4p; Document Type: Abstract UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=33009830&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 105806121 T1 - A systematic approach for preoperative rhinoplasty planning. AU - Lopez MA AU - Michaelson PG AU - Westine JG Y1 - 2008/07// N1 - Accession Number: 105806121. Language: English. Entry Date: 20080905. Revision Date: 20150711. Publication Type: Journal Article; pictorial; review; tables/charts. Journal Subset: Biomedical; Double Blind Peer Reviewed; Peer Reviewed; USA. Special Interest: Perioperative Care. NLM UID: 8000029. KW - Nose -- Anatomy and Histology KW - Rhinoplasty KW - Surgery, Operative -- Methods KW - Preoperative Care SP - 265 EP - 269 JO - American Journal of Otolaryngology JF - American Journal of Otolaryngology JA - AM J OTOLARYNGOL VL - 29 IS - 4 CY - Philadelphia, Pennsylvania PB - Elsevier Inc. SN - 0196-0709 AD - Facial Plastic and Reconstructive Surgery, Wilford Hall, United States Air Force Medical Center, San Antonio, TX, USA. U2 - PMID: 18598839. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105806121&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Gunzelmann, Glenn T1 - Strategy Generalization Across Orientation Tasks: Testing a Computational Cognitive Model. JO - Cognitive Science JF - Cognitive Science Y1 - 2008/07// VL - 32 IS - 5 M3 - Article SP - 835 EP - 861 SN - 03640213 AB - Humans use their spatial information processing abilities flexibly to facilitate problem solving and decision making in a variety of tasks. This article explores the question of whether a general strategy can be adapted for performing two different spatial orientation tasks by testing the predictions of a computational cognitive model. Human performance was measured on an orientation task requiring participants to identify the location of a target either on a map (find-on-map) or within an egocentric view of a space (find-in-scene). A general strategy instantiated in a computational cognitive model of the find-on-map task, based on the results from Gunzelmann and Anderson (2006), was adapted to perform both tasks and used to generate performance predictions for a new study. The qualitative fit of the model to the human data supports the view that participants were able to tailor a general strategy to the requirements of particular spatial tasks. The quantitative differences between the predictions of the model and the performance of human participants in the new experiment expose individual differences in sample populations. The model provides a means of accounting for those differences and a framework for understanding how human spatial abilities are applied to naturalistic spatial tasks that involve reasoning with maps. [ABSTRACT FROM AUTHOR] AB - Copyright of Cognitive Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFORMATION processing KW - SPATIAL ability KW - COGNITIVE ability KW - COGNITIVE maps (Psychology) KW - VISUAL perception KW - COGNITION KW - INDIVIDUAL differences KW - COGNITIVE science KW - COGNITIVE psychology KW - Adaptive Control of Thought-Rational (ACT-R) KW - Cogntive architecture KW - Computational model KW - Experiment KW - Prediction KW - Spatial cognition KW - Spatial orientation KW - Strategy N1 - Accession Number: 33245304; Gunzelmann, Glenn 1; Email Address: glenn.gunzelmann@us.af.mil; Affiliations: 1: Air Force Research Laboratory, Mesa, Arizona; Issue Info: Jul2008, Vol. 32 Issue 5, p835; Thesaurus Term: INFORMATION processing; Subject Term: SPATIAL ability; Subject Term: COGNITIVE ability; Subject Term: COGNITIVE maps (Psychology); Subject Term: VISUAL perception; Subject Term: COGNITION; Subject Term: INDIVIDUAL differences; Subject Term: COGNITIVE science; Subject Term: COGNITIVE psychology; Author-Supplied Keyword: Adaptive Control of Thought-Rational (ACT-R); Author-Supplied Keyword: Cogntive architecture; Author-Supplied Keyword: Computational model; Author-Supplied Keyword: Experiment; Author-Supplied Keyword: Prediction; Author-Supplied Keyword: Spatial cognition; Author-Supplied Keyword: Spatial orientation; Author-Supplied Keyword: Strategy; Number of Pages: 27p; Illustrations: 1 Diagram, 5 Charts, 9 Graphs; Document Type: Article L3 - 10.1080/03640210802221957 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=33245304&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Westmoreland, David T1 - Evidence of selection for egg crypsis in conspicuous nests. JO - Journal of Field Ornithology JF - Journal of Field Ornithology Y1 - 2008/07// VL - 79 IS - 3 M3 - Article SP - 263 EP - 268 PB - Wiley-Blackwell SN - 02738570 AB - The value of egg coloration as crypsis, once accepted as a general principle, has recently been questioned because most experiments have failed to show that egg coloration deters predation. The nest-crypsis hypothesis postulates that, among species that build conspicuous nests, selection for egg crypsis is relaxed or absent because visually searching predators detect nests prior to eggs. I tested the nest-crypsis hypothesis using the large, relatively conspicuous nests of American Robins ( Turdus migratorius), and eggs that differed markedly in color that were collected from the nests of Red-winged Blackbirds ( Agelaius phoeniceus), Brewer's Blackbirds ( Euphagus cyanocephalus), and Yellow-headed Blackbirds ( Xanthocephalus xanthocephalus). Each nest ( N= 22) received a clutch of each species during three sequential predation trials that were 16 d in duration. The order of clutch presentation was randomized for each nest. Survival trends for Brewer's and Yellow-headed Blackbirds were similar, and higher than those for clutches of Red-winged Blackbirds. By the end of trials, overall survival of the three clutch types was roughly equivalent. However, clutches of Red-winged Blackbird eggs, the most conspicuous egg type to the human eye, were discovered sooner by predators. Because the experimental design controlled for effects of nest crypsis, nest location, and nest size, this difference in egg survival can be attributed to differences in egg pigmentation. Thus, my results support a role for egg coloration as camouflage in conspicuous nests. (English) [ABSTRACT FROM AUTHOR] AB - SINOPSIS. El valor de la coloración de los huevos como elemento críptico, previamente aceptado como un principio general, recientemente ha sido cuestionado debido a que la mayoría de los experimentos han fracasado en demostrar que la coloración de estos es un detente para los depredadores. La hipótesis de cripticidad en los nidos postula, que para aquellas especies que construyen nidos conspicuos, la selección (para huevos crípticos) es relajada o esta ausente. Esto se basa en que los depredadores que usan particularmente la vista para localizar los nidos, detectan los nidos, antes que los huevos. Puse a pruebas la hipótesis de cripticidad en los nidos, utilizando nidos grandes, relativamente conspicuos del Petirojo ( Turdus migratorius), y huevos con diferentes marcas y coloración que fueron coleccionados en nidos de pajaros negros ( Agelaius phoeniceus, Euphagus cyanocephalus y Xanthocephalus xanthocephalus). En cada nido ( N= 22) se colocó una camada de cada especie de pájaro negro durante un periodo de 16 días para determinar la depredación en tres intentos. El orden de la presentación de huevos se hizo al azar. La supervivencia para los huevos de Xanthocephalus y Euphagus, fue similar y mayor que para las camadas de Agelaius. Al final de los experimentos, la sobrevivencia en general de las tres tipos de camadas, resultó básicamente equivalente. Sin embargo, las camadas de Agelaius, el tipo de huevo más llamativo para el ojo humano, fueron descubiertas más temprano por los depredadores. Dado el caso de que el experimento controló el efecto de la cripticidad del nido, la localización de este, y el tamaño del nido, las diferencias en la tasa de sobrevivencia de las camadas puede ser atribuida a la diferencia en la pigmentación de los huevos. Por ende, mis resultados apoyan el rol de la coloración de los huevos como un artefacto de camuflage en nidos conspicuos. (Spanish) [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Field Ornithology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - Eggs KW - Red-winged blackbird KW - Blackbirds KW - Birds KW - Robins KW - Nests KW - Animal habitations KW - American Robin KW - egg color KW - egg crypsis KW - nest-crypsis hypothesis N1 - Accession Number: 34479503; Westmoreland, David 1; Email Address: David.Westmoreland@usafa.edu; Affiliations: 1: Department of Biology, HQ USAFA/DFB, 2355 Faculty Drive, Suite 2P389, United States Air Force Academy, Colorado 80840, USA; Issue Info: Jul2008, Vol. 79 Issue 3, p263; Thesaurus Term: RESEARCH; Thesaurus Term: Eggs; Thesaurus Term: Red-winged blackbird; Thesaurus Term: Blackbirds; Subject Term: Birds; Subject Term: Robins; Subject Term: Nests; Subject Term: Animal habitations; Author-Supplied Keyword: American Robin; Author-Supplied Keyword: egg color; Author-Supplied Keyword: egg crypsis; Author-Supplied Keyword: nest-crypsis hypothesis; NAICS/Industry Codes: 112999 All other miscellaneous animal production; NAICS/Industry Codes: 112310 Chicken Egg Production; NAICS/Industry Codes: 413130 Poultry and egg merchant wholesalers; NAICS/Industry Codes: 424440 Poultry and Poultry Product Merchant Wholesalers; Number of Pages: 6p; Illustrations: 1 Chart, 1 Graph; Document Type: Article L3 - 10.1111/j.1557-9263.2008.00172.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=34479503&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Catano, Gabriel AU - Agan, Brian K. AU - Kulkarni, Hemant AU - Telles, Vanessa AU - Marconi, Vincent C. AU - Dolan, Matthew J. AU - Ahuja, Sunil K. T1 - Independent Effects of Genetic Variations in Mannose-Binding Lectin Influence the Course of HIV Disease: The Advantage of Heterozygosity for Coding Mutations. JO - Journal of Infectious Diseases JF - Journal of Infectious Diseases Y1 - 2008/07//7/1/2008 VL - 198 IS - 1 M3 - Article SP - 72 EP - 80 SN - 00221899 AB - Background. The in vivo impact of mannose-binding lectin (MBL), a molecule involved in innate immunity, on the pathogenesis of human immunodeficiency virus (HIV)-1 infection and AIDS is unknown. Methods. A total of 1102 HIV-positive and 2213 HIV-negative adult subjects were screened for polymorphisms in the coding and promoter regions of MBL2, the gene that encodes MBL. Results. Variations in MBL2 did not influence the risk of acquiring HIV-1. Heterozygosity for coding mutations (O allele) and homozygosity for the -221 promoter polymorphism (X allele) in MBL2 were associated with a delay in and an accelerated rate of disease progression, respectively. MBL2 variations influenced the rate of progression to AIDS-defining illnesses. In a multivariate model, the effects of MBL2 variations were independent of several parameters known to influence disease progression, including steady-state viral load, baseline CD4+ T cell counts, and delayed-type hypersensitivity skin test responses, an in vivo marker of cell-mediated immunity. The effects of MBL2 variations were most evident in those who possessed protective genotypes of CCR5 and a high copy number of CCL3L1, the most potent HIV-suppressive CCR5 ligand. Conclusions. MBL2 genotypes are independent determinants of HIV disease progression and heterozygosity for MBL2 coding mutations confer disease-retarding effects. MBL-dependent immune responses may play a role in the pathogenesis of HIV infection. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Infectious Diseases is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Lectins KW - AIDS (Disease) KW - Immune response KW - Human genetics -- Variation KW - Mannose KW - Multivariate analysis KW - Promoters (Genetics) KW - Ligands KW - Genetic polymorphisms KW - Viral load N1 - Accession Number: 32777927; Catano, Gabriel 1; Agan, Brian K. 2,3,4,5; Kulkarni, Hemant 1; Telles, Vanessa 1; Marconi, Vincent C. 2,4,5; Dolan, Matthew J. 2,3,4,5; Ahuja, Sunil K. 1,6; Affiliations: 1: Veterans Administration Research Center for AIDS and HIV-1 Infection, South Texas Veterans Health Care System and Department of Medicine, Texas; 2: Infectious Diseases Service, Texas; 3: Henry M. Jackson Foundation, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas; 4: San Antonio Military Medical Center, Fort Sam Houston, San Antonio, Texas; 5: Infectious Diseases Clinical Research Program, Uniformed Services University, Bethesda, Maryland; 6: Departments of Microbiology, Immunology, and Biochemistry, University of Texas Health Science Center, Texas; Issue Info: 7/1/2008, Vol. 198 Issue 1, p72; Thesaurus Term: Lectins; Thesaurus Term: AIDS (Disease); Thesaurus Term: Immune response; Subject Term: Human genetics -- Variation; Subject Term: Mannose; Subject Term: Multivariate analysis; Subject Term: Promoters (Genetics); Subject Term: Ligands; Subject Term: Genetic polymorphisms; Subject Term: Viral load; Number of Pages: 9p; Illustrations: 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1086/588712 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=32777927&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 105702565 T1 - Current and future cooling technologies used in preventing heat illness and improving work capacity for battlefield soldies: review of the literature. AU - O'Hara R AU - Eveland E AU - Fortuna S AU - Reilly P AU - Pohlman R Y1 - 2008/07// N1 - Accession Number: 105702565. Language: English. Entry Date: 20081128. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Military/Uniformed Services. NLM UID: 2984771R. KW - Cold KW - Cryotherapy -- Equipment and Supplies KW - Heat Stress Disorders -- Prevention and Control KW - Heat -- Adverse Effects KW - Military Medicine KW - Military Personnel KW - Skin Temperature KW - Workload KW - United States SP - 653 EP - 657 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 173 IS - 7 CY - Bethesda, Maryland PB - AMSUS AB - OBJECTIVE: The goals were to review the effectiveness of current cooling technologies used on the battlefield to reduce or to prevent heat illness in soldiers and to discuss possible alternative or improved cooling methods. METHODS: A search of the literature for 1990-2007 was performed by using the Air Force Institute of Technology and Air Force Research Laboratory search engines. RESULTS: Several current cooling technologies are modestly effective in attenuating brain and core body temperatures, but the cooling effects are not sustained and the devices present operational problems. This review indicates that some current cooling devices are effective in lowering perceived efforts and lengthening maximal exercise time but are incompatible with current demands. CONCLUSIONS: Many of the cooling methods and devices detailed in the literature are impractical for use in the field. Future research should focus on cooling technologies that are practical in the battlefield and have sustainable cooling effects. SN - 0026-4075 AD - Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433-7947 U2 - PMID: 18700599. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105702565&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - LaJoie, Mark AU - Laing, Arlene T1 - The Influence of the El Niño–Southern Oscillation on Cloud-to-Ground Lightning Activity along the Gulf Coast. Part I: Lightning Climatology. JO - Monthly Weather Review JF - Monthly Weather Review Y1 - 2008/07// VL - 136 IS - 7 M3 - Article SP - 2523 EP - 2542 PB - American Meteorological Society SN - 00270644 AB - Cloud-to-ground (CG) lightning flashes from the National Lightning Detection Network are analyzed to determine if the El Niño–Southern Oscillation (ENSO) cycle influences lighting activity along the Gulf Coast region. First, an updated climatology of lightning was developed for the region. Flash density maps are constructed from an 8-yr dataset (1995–2002) and compared with past lightning climatologies. Second, lightning variability is compared with the phases of ENSO. Winter lightning distributions are compared with one published study of ENSO and lightning days in the Southeast. Flash density patterns are, overall, consistent with past U.S. lightning climatology. However, the peak flash density for the annual mean was less than observed in previous climatologies, which could be due to the disproportionately large percentage of cool ENSO periods compared to previous lightning climatologies. The highest annual lightning counts were observed in 1997, which consisted of mostly warm ENSO seasons; the 1997–98 El Niño was one of the strongest on record. The lowest lightning counts were observed in 2000, which had mostly cool or neutral phases of ENSO including the lowest Niño-3.4 anomaly of the study period. Analysis of winter season lightning flash densities substantiated the role of the ENSO cycle in winter season lightning fluctuations. Winter lightning activity increased dramatically during the 1997–98 El Niño. The lowest winter flash densities are associated with cool ENSO phases. Although 8 yr is inadequate to establish a long-term pattern, results indicate that ENSO influences lightning and that further study is warranted. As more years of lightning data are acquired, a more complete climatology can be developed. [ABSTRACT FROM AUTHOR] AB - Copyright of Monthly Weather Review is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Lightning KW - Southern oscillation KW - Climatology KW - Meteorology KW - United States N1 - Accession Number: 33327938; LaJoie, Mark 1; Laing, Arlene 2; Email Address: laing@ucar.edu; Affiliations: 1: United States Air Force, Fort Lewis, Washington; 2: National Center for Atmospheric Research, Boulder, Colorado; Issue Info: Jul2008, Vol. 136 Issue 7, p2523; Thesaurus Term: Lightning; Thesaurus Term: Southern oscillation; Thesaurus Term: Climatology; Thesaurus Term: Meteorology; Subject: United States; Number of Pages: 20p; Illustrations: 1 Chart, 2 Graphs, 10 Maps; Document Type: Article L3 - 10.1175/2007MWR2227.1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=33327938&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Laing, Arlene AU - LaJoie, Mark AU - Reader, Steven AU - Pfeiffer, Karl T1 - The Influence of the El Niño–Southern Oscillation on Cloud-to-Ground Lightning Activity along the Gulf Coast. Part II: Monthly Correlations. JO - Monthly Weather Review JF - Monthly Weather Review Y1 - 2008/07// VL - 136 IS - 7 M3 - Article SP - 2544 EP - 2556 PB - American Meteorological Society SN - 00270644 AB - The El Niño–Southern Oscillation (ENSO) cycle is known to influence weather and climate along the Gulf Coast region, causing anomalously high precipitation during El Niño winters. This region is also known for having the highest lightning flash density in the United States. An 8-yr dataset (1995–2002) of cloud-to-ground (CG) lightning flashes was analyzed to determine if the ENSO cycle influences lighting activity along the Gulf Coast region. Simple Pearson’s correlations were computed between concurrent monthly pairings of Niño-3.4 sea surface temperature (SST) and CG lightning flash deviation values from the study area. The correlation results are mapped and analyzed for links to meteorological features. Statistically significant correlation values greater than 0.8 were noted over large swaths of the study area during each winter month. The highest correlations were arranged in banded swaths and associated with regions of low flash densities during December and February. In January, areas of high correlation were spatially coincident with areas of enhanced flash density. Both the enhanced CG flash regions and high correlation values and patterns are indicative of a southerly shift in the midlatitude storm track known to occur during warm ENSO events. During the spring and summer, most of the region has weak correlation with ENSO except for August, which has a large area of negative correlations. These findings indicate that lightning increases during La Niña summers. Correlation patterns in late fall are similar to those of winter. The ENSO–lightning relationship has implications for hazard assessment and can be a useful tool for long-term seasonal planning. [ABSTRACT FROM AUTHOR] AB - Copyright of Monthly Weather Review is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Ocean-atmosphere interaction KW - Southern oscillation KW - Atmospheric pressure KW - Lightning KW - United States N1 - Accession Number: 33327937; Laing, Arlene 1; Email Address: laing@ucar.edu; LaJoie, Mark 2; Reader, Steven 3; Pfeiffer, Karl 4; Affiliations: 1: National Center for Atmospheric Research, Boulder, Colorado; 2: United States Air Force, Fort Lewis, Washington; 3: University of South Florida, Tampa, Florida; 4: Naval Postgraduate School, Monterey, California; Issue Info: Jul2008, Vol. 136 Issue 7, p2544; Thesaurus Term: Ocean-atmosphere interaction; Thesaurus Term: Southern oscillation; Thesaurus Term: Atmospheric pressure; Thesaurus Term: Lightning; Subject: United States; Number of Pages: 13p; Illustrations: 1 Graph, 7 Maps; Document Type: Article L3 - 10.1175/2007MWR2228.1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=33327937&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Peterson, Alan L. AU - Baker, Monty T. AU - McCarthy, Kelly R. T1 - Combat Stress Casualties in Iraq. Part 2: Psychiatric Screening Prior to Aeromedical Evacuation. JO - Perspectives in Psychiatric Care JF - Perspectives in Psychiatric Care Y1 - 2008/07// VL - 44 IS - 3 M3 - Article SP - 159 EP - 168 SN - 00315990 AB - TOPIC. Exposure to combat-related trauma is a leading cause of posttraumatic stress disorder. Deployed military mental health practitioners serve important roles in the assessment, diagnosis, and aeromedical evacuation of psychiatric patients from the combat zone. PURPOSE. To review the role of military mental health professionals working with psychiatric patients at a combat hospital and aeromedical staging facility in Iraq. SOURCE OF INFORMATION. Military operating instructions, existing theoretical and research literature, and personal experiences of the authors while deployed to Iraq. CONCLUSIONS. Psychiatric screening can help reduce risk in potentially unstable mental health patients prior to aeromedical evacuation. Civilian nurse psychotherapists and advanced practice psychiatric nurses will be needed to provide psychiatric follow-up care for the large number of military veterans returning from combat. [ABSTRACT FROM AUTHOR] AB - Copyright of Perspectives in Psychiatric Care is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY psychiatry KW - POST-traumatic stress disorder KW - MENTAL health personnel KW - PSYCHOTHERAPY patients KW - PSYCHIATRIC nursing KW - PSYCHOTHERAPISTS N1 - Accession Number: 33246306; Peterson, Alan L. 1,2; Email Address: petersona3@uthscsa.edu; Baker, Monty T. 3; McCarthy, Kelly R. 4; Source Information: Jul2008, Vol. 44 Issue 3, p159; Subject: MILITARY psychiatry; Subject: POST-traumatic stress disorder; Subject: MENTAL health personnel; Subject: PSYCHOTHERAPY patients; Subject: PSYCHIATRIC nursing; Subject: PSYCHOTHERAPISTS; Number of Pages: 10p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1111/j.1744-6163.2008.00170.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=33246306&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 2008-10402-003 AN - 2008-10402-003 AU - Nisenoff, Carolina D. T1 - Psychotherapeutic and adjunctive pharmacologic approaches to treating posttraumatic stress disorder. JF - Psychiatry JO - Psychiatry JA - Psychiatry (Edgmont) Y1 - 2008/07// VL - 5 IS - 7 SP - 42 EP - 51 CY - US PB - Matrix Medical Communications SN - 1550-5952 AD - Nisenoff, Carolina D., USAF, MC, PSC 80 Box 17559, APO, AP, Okinawa, Japan, 96367 N1 - Accession Number: 2008-10402-003. PMID: 19727267 Other Journal Title: Innovations in Clinical Neuroscience. Partial author list: First Author & Affiliation: Nisenoff, Carolina D.; United States Air Force, Medical Corps, Mental Health Clinic, Okinawa, Japan. Release Date: 20090525. Correction Date: 20110516. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Drug Therapy; Posttraumatic Stress Disorder; Psychotherapy; Adjunctive Treatment. Classification: Health & Mental Health Treatment & Prevention (3300). Population: Human (10). References Available: Y. Page Count: 10. Issue Publication Date: Jul, 2008. AB - Posttraumatic stress disorder (PTSD) is a potentially disabling illness that affects millions of people worldwide and can be very difficult to treat, especially the sleep disturbances often associated with this disorder. Successful treatment focuses on psychotherapy, and medications may be useful adjuncts. This article gives examples of successful therapeutic approaches and adjunctive medication use in PTSD. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - psychotherapeutic approaches KW - adjunctive pharmacologic approaches KW - posttraumatic stress disorder KW - 2008 KW - Drug Therapy KW - Posttraumatic Stress Disorder KW - Psychotherapy KW - Adjunctive Treatment KW - 2008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-10402-003&site=ehost-live&scope=site UR - carolina.nisenoff@kadena.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-09619-002 AN - 2008-09619-002 AU - Peterson, Alan L. AU - Baker, Monty T. AU - Mccarthy, Kelly R. T1 - Combat stress casualties in Iraq. Part 1: Behavioral health consultation at an expeditionary medical group. JF - Perspectives in Psychiatric Care JO - Perspectives in Psychiatric Care JA - Perspect Psychiatr Care Y1 - 2008/07// VL - 44 IS - 3 SP - 146 EP - 158 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0031-5990 SN - 1744-6163 N1 - Accession Number: 2008-09619-002. PMID: 18577120 Partial author list: First Author & Affiliation: Peterson, Alan L.; Department of Psychiatry, University of Texas Health Science Center, TX, US. Other Publishers: Blackwell Publishing. Release Date: 20080825. Correction Date: 20130114. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Medical Patients; Mental Health; Mental Health Personnel; Military Personnel; Professional Consultation. Minor Descriptor: Combat Experience; Hospitalization; Stress. Classification: Professional Psychological & Health Personnel Issues (3400); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: Iraq. Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 13. Issue Publication Date: Jul, 2008. AB - PURPOSE. We review the role of military mental health professionals in consulting with inpatient medical patients and staff at a combat hospital and aeromedical evacuation staging facility in Iraq. CONCLUSIONS. Behavioral health consultation with medical and surgical patients during hospitalization and prior to aeromedical evacuation can help identify patients with combat stress exposure that may require future mental health follow-up. PRACTICE IMPLICATIONS. Extensive use of civilian mental health practitioners including nurse psychotherapists and psychiatric nurse practitioners will be needed to provide psychiatric care for the large number of U.S. veterans who return from deployment with combat stress related disorders. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - mental health KW - military mental health professionals KW - behavioral health consultation KW - inpatient medical patients KW - combat stress KW - 2008 KW - Medical Patients KW - Mental Health KW - Mental Health Personnel KW - Military Personnel KW - Professional Consultation KW - Combat Experience KW - Hospitalization KW - Stress KW - 2008 DO - 10.1111/j.1744-6163.2008.00169.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-09619-002&site=ehost-live&scope=site UR - petersona3@uthscsa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-09619-003 AN - 2008-09619-003 AU - Peterson, Alan L. AU - Baker, Monty T. AU - McCarthy, Kelly R. T1 - Combat stress casualties in Iraq. Part 2: Psychiatric screening prior to aeromedical evacuation. JF - Perspectives in Psychiatric Care JO - Perspectives in Psychiatric Care JA - Perspect Psychiatr Care Y1 - 2008/07// VL - 44 IS - 3 SP - 159 EP - 168 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0031-5990 SN - 1744-6163 N1 - Accession Number: 2008-09619-003. PMID: 18577121 Partial author list: First Author & Affiliation: Peterson, Alan L.; Department of Psychiatry, University of Texas Health Science Center, TX, US. Other Publishers: Blackwell Publishing. Release Date: 20080825. Correction Date: 20130114. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Hospitals; Mental Health Personnel; Military Veterans; Psychiatric Patients; Screening. Minor Descriptor: Combat Experience; Mental Health; Stress. Classification: Professional Psychological & Health Personnel Issues (3400); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: Iraq. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Jul, 2008. AB - TOPIC. Exposure to combat-related trauma is a leading cause of posttraumatic stress disorder. Deployed military mental health practitioners serve important roles in the assessment, diagnosis, and aeromedical evacuation of psychiatric patients from the combat zone. PURPOSE. To review the role of military mental health professionals working with psychiatric patients at a combat hospital and aeromedical staging facility in Iraq. SOURCE OF INFORMATION. Military operating instructions, existing theoretical and research literature, and personal experiences of the authors while deployed to Iraq. CONCLUSIONS. Psychiatric screening can help reduce risk in potentially unstable mental health patients prior to aeromedical evacuation. Civilian nurse psychotherapists and advanced practice psychiatric nurses will be needed to provide psychiatric follow-up care for the large number of military veterans returning from combat. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - psychiatric screening KW - military deployment KW - aeromedical staging facility KW - combat stress casualties KW - aeromedical evacuation KW - 2008 KW - Hospitals KW - Mental Health Personnel KW - Military Veterans KW - Psychiatric Patients KW - Screening KW - Combat Experience KW - Mental Health KW - Stress KW - 2008 DO - 10.1111/j.1744-6163.2008.00170.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-09619-003&site=ehost-live&scope=site UR - petersona3@uthscsa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-11417-008 AN - 2008-11417-008 AU - O'Hara, Reginald AU - Eveland, Ed AU - Fortuna, Sarah AU - Reilly, Patricia AU - Pohlman, Roberta T1 - Current and future cooling technologies used in preventing heat illness and improving work capacity for battlefield soldiers: Review of the literature. JF - Military Medicine JO - Military Medicine JA - Mil Med Y1 - 2008/07// VL - 173 IS - 7 SP - 653 EP - 657 CY - US PB - Assn of Military Surgeons of the US SN - 0026-4075 SN - 1930-613X AD - O'Hara, Reginald, Air Force Research Laboratory, Wright Patterson Air Force Base, OH, US, 45433-7947 N1 - Accession Number: 2008-11417-008. PMID: 18700599 Partial author list: First Author & Affiliation: O'Hara, Reginald; Air Force Research Laboratory, Wright Patterson Air Force Base, OH, US. Release Date: 20090810. Correction Date: 20170302. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Heat Effects; Human Channel Capacity; Military Personnel; Physical Disorders; Technology. Minor Descriptor: Body Temperature; Prevention. Classification: Health & Mental Health Treatment & Prevention (3300); Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Literature Review. References Available: Y. Page Count: 5. Issue Publication Date: Jul, 2008. AB - Objective: The goals were to review the effectiveness of current cooling technologies used on the battlefield to reduce or to prevent heat illness in soldiers and to discuss possible alternative or improved cooling methods. Methods: A search of the literature for 1990-2007 was performed by using the Air Force Institute of Technology and Air Force Research Laboratory search engines. Results: Several current cooling technologies are modestly effective in attenuating brain and core body temperatures, but the cooling effects are not sustained and the devices present operational problems. This review indicates that some current cooling devices are effective in lowering perceived efforts and lengthening maximal exercise time but are incompatible with current demands. Conclusions: Many of the cooling methods and devices detailed in the literature are impractical for use in the field. Future research should focus on cooling technologies that are practical in the battlefield and have sustainable cooling effects. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - cooling technologies KW - heat illness prevention KW - work capacity KW - battlefield soldiers KW - 2008 KW - Heat Effects KW - Human Channel Capacity KW - Military Personnel KW - Physical Disorders KW - Technology KW - Body Temperature KW - Prevention KW - 2008 DO - 10.7205/MILMED.173.7.653 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-11417-008&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-09301-015 AN - 2008-09301-015 AU - Bellenkes, Andrew AU - Tidball, Brian T1 - Review of Aircraft system safety: Military and civil aeronautical applications. JF - Ergonomics JO - Ergonomics JA - Ergonomics Y1 - 2008/07// VL - 51 IS - 7 SP - 1122 EP - 1124 CY - United Kingdom PB - Taylor & Francis SN - 0014-0139 SN - 1366-5847 N1 - Accession Number: 2008-09301-015. Partial author list: First Author & Affiliation: Bellenkes, Andrew; United States Air Force Academy, Colorado Springs, CO, US. Release Date: 20080728. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Review-Book. Language: English. Major Descriptor: Aircraft; Aviation Safety; Human Factors Engineering; Systems Design. Classification: Transportation (4090). Population: Human (10). Reviewed Item: Kritzinger, Duane. Aircraft system safety: Military and civil aeronautical applications=CRC Press, Boca Raton, Florida, USA, pp. 350, £117.00. Also published by Woodhead Publishing, Cambridge, UK; 2006. Page Count: 3. Issue Publication Date: Jul, 2008. AB - Reviews the book, Aircraft system safety: Military and civil aeronautical applications by Duane Kritzinger (2006). This book emphasises that system safety must be 'built-in, not added on'; an approach that has only within recent years been inculcated into the predominant culture of 'fit the user to the system'. The author broaches this dualistic conundrum from a practical perspective, showing the reader that safety has indeed made its way into the culture of design, both legally and practically. This book brings the basic theory and practice of human-centred system safety to engineers tasked with the design and construction of such systems, and does so in a way that is most readable and informative. This book is a design document, reflecting the notions of safety in airworthiness which determine the acceptability of a system. Over all, this clear, well-written book will be an excellent resource, not only for mechanical engineers but for all practitioners of system safety design and engineering, safety and system managers and human factors/ergonomics professionals involved with human systems integration (HSI) processes. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - aircraft system safety KW - aeronautical applications KW - ergonomics KW - 2008 KW - Aircraft KW - Aviation Safety KW - Human Factors Engineering KW - Systems Design KW - 2008 U2 - Kritzinger, Duane. (2006); Aircraft system safety: Military and civil aeronautical applications; CRC Press, Boca Raton, Florida, USA, pp. 350, £117.00. Also published by Woodhead Publishing, Cambridge, UK; 0849390125 (Hardcover); 1845691369. DO - 10.1080/00140130701680619 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-09301-015&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Zhdanov, B. V. AU - Stooke, A. AU - Boyadjian, G. AU - Voci, A. AU - Knize, R. J. T1 - Optically pumped caesium-Freon laser. JO - Electronics Letters JF - Electronics Letters Y1 - 2008/06/05/ VL - 44 IS - 12 M3 - Article SP - 735 EP - 737 SN - 00135194 AB - A Cs vapour laser using Freon-14 as the buffer gas has been demonstrated. All operating parameters of this laser (threshold, output power, slope efficiency) are similar to a Cs laser operating with an ethane buffer gas. No contamination of the gain medium was observed at operating temperatures below 100°C, while at higher temperatures such contamination appears and leads to lasing degradation. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONTAMINATION (Technology) KW - LASERS KW - METAL vapor lasers KW - GAS lasers KW - OPTOELECTRONIC devices KW - TEMPERATURE N1 - Accession Number: 32484843; Zhdanov, B. V. 1; Email Address: boris.zhdanov.ctr@usafa.edu; Stooke, A. 1; Boyadjian, G. 1; Voci, A. 1; Knize, R. J. 1; Affiliations: 1: US Air Force Academy, Department of Physics, USA; Issue Info: 6/5/2008, Vol. 44 Issue 12, p735; Thesaurus Term: CONTAMINATION (Technology); Subject Term: LASERS; Subject Term: METAL vapor lasers; Subject Term: GAS lasers; Subject Term: OPTOELECTRONIC devices; Subject Term: TEMPERATURE; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 1 Black and White Photograph, 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1049/el:20081024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=32484843&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Koepke, Corbin G. AU - Armacost, Andrew P. AU - Barnhart, Cynthia AU - Kolitz, Stephan E. T1 - An integer programming approach to support the US Air Force's air mobility network JO - Computers & Operations Research JF - Computers & Operations Research Y1 - 2008/06// VL - 35 IS - 6 M3 - Article SP - 1771 EP - 1788 SN - 03050548 AB - Abstract: The United States Air Force''s air mobility command is responsible for creating a schedule and executing that schedule for a large-scale air mobility network that encompasses aircraft with prioritized missions. Aerial ports (airports) can process or park a maximum number of aircraft, called the maximum on ground (MOG). As the schedule changes due to disruptions, such as equipment failure or weather, the MOG constraint can cause the new schedule to be infeasible. Traditionally, re-planning the channel route schedule to adhere to MOG constraints has been a manual process that usually stops after the first feasible set of changes is found, due to the challenges of large amounts of data and urgency for a re-plan. We extend Bertsimas and Stock''s integer program formulation for the commercial airline Multi-Airport Ground-Holding Problem to the air mobility network. Our integer programming formulation recommends delays to certain aircraft on the ground to minimize the effects of system-wide disruptions while taking account mission priorities of the aircraft. [Copyright &y& Elsevier] AB - Copyright of Computers & Operations Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DYNAMIC programming KW - INTEGER programming KW - MANAGEMENT science KW - MATHEMATICAL programming KW - Airlift KW - Integer programming KW - Military applications KW - Scheduling N1 - Accession Number: 27335353; Koepke, Corbin G. 1; Email Address: ckoepke@alum.mit.edu; Armacost, Andrew P. 2; Email Address: armacost@alum.mit.edu; Barnhart, Cynthia 3; Email Address: barnhart@mit.edu; Kolitz, Stephan E. 4; Email Address: kolitz@draper.com; Affiliations: 1: Air Force Research Laboratory, USA; 2: United States Air Force Academy, Department of Management, 2354 Fairchild Drive, Rm. 6H128, USAF Academy, CO 80840, USA; 3: Massachusetts Institute of Technology, Center for Transportation and Logistics, 77 Massachusetts Avenue, Bldg. E40-149, Cambridge, MA 02139, USA; 4: The Charles Stark Draper Laboratory, Inc., 555 Technology Square, Cambridge, MA 02139, USA; Issue Info: Jun2008, Vol. 35 Issue 6, p1771; Thesaurus Term: DYNAMIC programming; Thesaurus Term: INTEGER programming; Thesaurus Term: MANAGEMENT science; Thesaurus Term: MATHEMATICAL programming; Author-Supplied Keyword: Airlift; Author-Supplied Keyword: Integer programming; Author-Supplied Keyword: Military applications; Author-Supplied Keyword: Scheduling; Number of Pages: 18p; Document Type: Article L3 - 10.1016/j.cor.2006.09.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=27335353&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Roscoe, Stanley N. AU - Acosta, Hector M. T1 - A Flight by Periscope and Where It Landed. (cover story) JO - Human Factors JF - Human Factors Y1 - 2008/06// VL - 50 IS - 3 M3 - Article SP - 361 EP - 367 PB - Sage Publications Inc. SN - 00187208 AB - Objective: This study defines display design factors linking visual accommodation and the perceived size of distant objects. Background: In 1947, in anticipation of augmented contact and sensor-relayed contact displays, a periscope was installed in an airplane to serve as a sensor-based contact display simulator. To achieve normal landing performance, however, the unity image had to be magnified. This successful intervention, first published in 1966 in Human Factors, implicated oculomotor mechanisms and higher perceptual functions and became the observational basis for a series of investigative hypotheses. Method: Observers registered the perceived size of the collimated image of a "moon" by adjusting a disk of light while alternatively providing optometric measurements of accommodative distance. Results: Various investigators found high correlations between focal distances and perceived moon sizes. Conclusion: The simulated moon provided a superior vehicle for revealing the relationship between focal distance and perceived size and the factors affecting both. The operational display design implications and the possibility of a partial explanation for the moon illusion provided the motivation for an important doctoral research project involving eight factors that affect both focal distance and perceived size. Application: The investigation reaffirmed that virtual images, as found in head-up and head-mounted displays (HUDs and I{MDs, respectively), do not consistently draw focus to optical infinity and that a variety of factors necessarily manipulated by display designers and present in many operational systems can affect visual performance partially through the mediation of accommodation. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Design -- Human factors KW - Ergonomics KW - Periscopes KW - Optical instruments KW - Detectors KW - Airplanes KW - Information display systems KW - Designers KW - Technological innovations N1 - Accession Number: 33330623; Roscoe, Stanley N. 1; Acosta, Hector M. 2; Email Address: HecTex@aol.com; Affiliations: 1: ILLIANA Aviation Sciences, McKinIeyviIle, California; 2: Air Force Material Command, San Antonio, Texas; Issue Info: Jun2008, Vol. 50 Issue 3, p361; Subject Term: Design -- Human factors; Subject Term: Ergonomics; Subject Term: Periscopes; Subject Term: Optical instruments; Subject Term: Detectors; Subject Term: Airplanes; Subject Term: Information display systems; Subject Term: Designers; Subject Term: Technological innovations; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 446130 Optical Goods Stores; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1518/001872008X288484 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=33330623&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Polak, M. AU - Barnes, P. N. AU - Kvitkovic, J. AU - Levin, G. A. AU - Mozola, P. AU - Usak, P. T1 - Properties of an Experimental Coil Wound With YBCO Coated Conductor Carrying an AC Current With Frequencies up to 864 Hz. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2008/06// Y1 - 2008/06// VL - 18 IS - 2 M3 - Article SP - 1240 EP - 1244 SN - 10518223 AB - To study the properties of coils made out of the second generation superconducting wire, we designed, manufactured and tested an experimental double pancake coil wound with 4.2 meters of a 4 mm wide, copper stabilized YBCO coated conductor. The critical current of a short sample was 53 A at 77 Kin self-field. The critical current of the single pancake coil based on the 1 μV/cm criterion for the average electric field was approximately 30 A. The critical current of the complete double pancake was about 23 A. Using micro Hall probes, we measured the radial magnetic field component at the edges of the coil. The results clearly indicated the strong influence of the magnetization currents on the magnitude and distribution of the radial field component. AC losses in the coil were measured at frequencies of 54 Hz, 108 Hz, 216 Hz, 432 Hz and 864 Hz. At the critical current (16.2 Arms) and frequency 432 Hz the coil losses were 0.9 W. The magnetic measurements showed that the tape in the winding is exposed to a very inhomogeneous magnetic field. The experimental results of the field distribution in the winding were compared with the existing theoretical models. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC coils KW - ELECTRIC lines -- Superconducting KW - ELECTRIC currents KW - ELECTRIC fields KW - MAGNETIZATION KW - MAGNETIC measurements KW - MAGNETIC fields KW - ELECTROMAGNETIC fields KW - SUPERCONDUCTIVITY N1 - Accession Number: 32811492; Source Information: Jun2008, Vol. 18 Issue 2, p1240; Subject Term: ELECTRIC coils; Subject Term: ELECTRIC lines -- Superconducting; Subject Term: ELECTRIC currents; Subject Term: ELECTRIC fields; Subject Term: MAGNETIZATION; Subject Term: MAGNETIC measurements; Subject Term: MAGNETIC fields; Subject Term: ELECTROMAGNETIC fields; Subject Term: SUPERCONDUCTIVITY; Subject Term: ; Number of Pages: 5p; ; Illustrations: 1 Diagram, 10 Graphs; ; Document Type: Article; L3 - 10.1109/TASC.2008.920557 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=32811492&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Usak, P. AU - Polak, M. AU - Kvitkovic, J. AU - Mozola, P. AU - Barnes, P. N. AU - Levin, G. A. T1 - Current Distribution in the Winding of a Superconducting Coil. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2008/06// Y1 - 2008/06// VL - 18 IS - 2 M3 - Article SP - 1597 EP - 1600 SN - 10518223 AB - In this paper, we compute with accuracy the impedance parameters of a superconducting magnetic energy storage (SMES) system. We do this by using a three-dimensional integral formulation of the full set of frequency domain Maxwell's equations in the quasistatic limit. The impedance parameter allows the construction of a time domain equivalent circuit to be used for the simulation of the overall SMES system. The numerical model is based on a volume integral formulation where the unknown is the total current density J, expressed as the sum of its solenoidal and non-solenoidal components. This separation allows to avoid the ill-conditioning of the relevant stiffness matrix at low frequencies, being essential for developing a numerical model accurately working where the SMES resonances are located. The model is applied to the case of an ideal model coil consisting of an 18-layers solenoid. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STIFF computation (Differential equations) KW - ELECTRIC impedance KW - ELECTRIC coils KW - SUPERCONDUCTING magnets KW - MAGNETIC energy storage KW - NUMERICAL integration KW - SIMULATION methods & models KW - SOLENOIDS -- Magnetic fields KW - MAGNETIC resonance N1 - Accession Number: 32811578; Source Information: Jun2008, Vol. 18 Issue 2, p1597; Subject Term: STIFF computation (Differential equations); Subject Term: ELECTRIC impedance; Subject Term: ELECTRIC coils; Subject Term: SUPERCONDUCTING magnets; Subject Term: MAGNETIC energy storage; Subject Term: NUMERICAL integration; Subject Term: SIMULATION methods & models; Subject Term: SOLENOIDS -- Magnetic fields; Subject Term: MAGNETIC resonance; Subject Term: ; Number of Pages: 4p; ; Illustrations: 1 Diagram, 1 Chart, 3 Graphs; ; Document Type: Article; L3 - 10.1109/TASC.2008.920589 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=32811578&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Hoff, Brad W. AU - Gilgenbach, Ronald M. AU - Jordan, N. M. AU - Lau, Y. Y. AU - Cruz, Edward J. AU - French, David M. AU - Gomez, Matthew R. AU - Zier, Jacob C. AU - Spencer, Thomas A. AU - Price, David T1 - Magnetic Priming at the Cathode of a Relativistic Magnetron. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2008/06//Jun2008 Part 1 of 2 Y1 - 2008/06//Jun2008 Part 1 of 2 VL - 36 IS - 3 M3 - Article SP - 710 EP - 717 SN - 00933813 AB - Experiments have been performed in testing magnetic priming at the cathode of a relativistic magnetron to study the effects on high-power microwave performance. Magnetic priming consists of N/2 azimuthal magnetic perturbations applied to an N-cavity magnetron for rapid generation of the desired number of electron spokes for the π-mode. Magnetic perturbations were imposed by utilizing three high-permeability nickel-iron wires embedded beneath the emission region of the cathode, spaced 1200 apart. Magnetic priming was demonstrated to increase the percentage of π-mode shots by 15% over the baseline case. Mean peak power for π-mode shots was found to be higher in the magnetically primed case by almost a factor of two. Increases in mean microwave pulsewidth were also observed in the magnetically primed case when compared to the unprimed case (66-ns primed versus 50-ns unprimed). Magnetron starting current for the magnetically primed π-mode exhibited a reduction to 69% of the unprimed baseline starting current. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CATHODES KW - MAGNETRONS KW - RELATIVITY (Physics) KW - MICROWAVES KW - ELECTRONS KW - WIRE N1 - Accession Number: 32900456; Source Information: Jun2008 Part 1 of 2, Vol. 36 Issue 3, p710; Subject Term: CATHODES; Subject Term: MAGNETRONS; Subject Term: RELATIVITY (Physics); Subject Term: MICROWAVES; Subject Term: ELECTRONS; Subject Term: WIRE; Subject Term: ; Number of Pages: 8p; ; Illustrations: 11 Graphs; ; Document Type: Article; L3 - 10.1109/TPS.2008.923732 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=32900456&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Chipara, Mircea AU - Vaia, Richard A. AU - Nasar, Ali T1 - Electron Spin Resonance on polyurethanes – Vapor grown carbon nanofiber composites. JO - Vacuum JF - Vacuum Y1 - 2014/09// VL - 107 M3 - Article SP - 254 EP - 258 SN - 0042207X AB - Abstract: Electron Spin Resonance investigations on polyurethane – vapor grown carbon nanofiber composites are reported. The research focuses on the free radicals generated during the processing step and on the ESR spectrum of the conducting electrons delocalized over the carbon nanofiber. The deactivation of free radicals due to their interaction with the electrons residing on carbon nanofiber was analyzed and related to the enhanced stability of these composites. The dependence of the resonance line parameters on the concentration of the nanofiller is studied in detail. Experimental data indicates that the electrical conductivity is due to uncoupled electrons delocalized over the conducting domains of the nanofiller and suggests that the electrical conductivity is dominated by polarons. The percolation of the electrical conductivity is also reflected in the ESR data. The interactions between uncoupled electronic spins, as revealed by the line width dependence on the concentration of carbon nanofibers are discussed in detail. [Copyright &y& Elsevier] AB - Copyright of Vacuum is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON paramagnetic resonance KW - POLYURETHANES KW - VAPORS KW - CARBON nanofibers KW - COMPOSITE materials KW - FREE radicals (Chemistry) KW - Electrical conductivity KW - Electron Spin Resonance KW - Free radicals KW - Percolation KW - Polarons KW - Polyurethanes-vapor grown carbon nanofibers N1 - Accession Number: 96446416; Chipara, Mircea 1; Email Address: chipara@yahoo.com Vaia, Richard A. 2 Nasar, Ali 3; Affiliation: 1: The University of Texas – Pan American, Edinburg, TX 78541, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 3: CNC Coatings, Rochdale, Lancashire OL11 1HY, United Kingdom; Source Info: Sep2014, Vol. 107, p254; Subject Term: ELECTRON paramagnetic resonance; Subject Term: POLYURETHANES; Subject Term: VAPORS; Subject Term: CARBON nanofibers; Subject Term: COMPOSITE materials; Subject Term: FREE radicals (Chemistry); Author-Supplied Keyword: Electrical conductivity; Author-Supplied Keyword: Electron Spin Resonance; Author-Supplied Keyword: Free radicals; Author-Supplied Keyword: Percolation; Author-Supplied Keyword: Polarons; Author-Supplied Keyword: Polyurethanes-vapor grown carbon nanofibers; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.vacuum.2014.02.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96446416&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Woodward, C. AU - van de Walle, A. AU - Asta, M. AU - Trinkle, D. R. T1 - First-principles study of interfacial boundaries in Ni-Ni3Al. JO - Acta Materialia JF - Acta Materialia Y1 - 2014/08/15/ VL - 75 M3 - Article SP - 60 EP - 70 SN - 13596454 AB - The width and energy of low-index interfacial boundaries (IFBs) in Ni-Ni3Al are calculated using first-principles methods for temperatures ranging from 0 to 1300 K. The low-temperature, coherent and chemically sharp (1 0 0), (1 1 0) and (1 1 1) IFBs are studied using conventional spin-polarized density functional methods. Cluster expansion methods, as implemented in the ATAT software suite, are used to estimate the interfacial excess free energies (IEFEs) and composition and long-range order profiles of these defects as a function of temperature. The simple face-centered cubic-based cluster expansion produces interfacial widths in the range of 1.5-3.0 nm at 1000 K. Interfacial widths double in size with an increase in temperature of 500 K. We also find that the IEFEs for the (1 0 0), (1 1 0) and (1 1 1) IFBs are strongly temperature dependent, decreasing by 90% as temperature increases from 0 to 1000 K. While vibrational and electronic entropic contributions were also considered, changes in free energy are dominated by the configurational entropy. The predicted high-temperature IEFE is approximately 10 mJ m-2 which is in excellent agreement with previous fits to experimentally measured coarsening rates. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL-aluminum alloys KW - INTERFACIAL bonding KW - TEMPERATURE KW - DENSITY functionals KW - ENTROPY KW - OSTWALD ripening KW - Ab initio calculations KW - Interfaces KW - Interfacial free energy KW - Superalloys KW - Temperature dependence N1 - Accession Number: 96999204; Woodward, C. 1; Email Address: christopher.woodward@us.af.mil van de Walle, A. 2; Email Address: axelvandewalle@brown.edu Asta, M. 3; Email Address: mdasta@berkeley.edu Trinkle, D. R. 4; Email Address: dtrinkle@illinois.edu; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH 45433-7817, USA 2: School of Engineering, Brown University, Providence, RI 02912, USA 3: Department of Materials Science and Engineering, University of California, Berkeley, CA 94720-1760, USA 4: Department of Materials Science and Engineering, University of Illinois, Urbana, IL 61801, USA; Source Info: Aug2014, Vol. 75, p60; Subject Term: NICKEL-aluminum alloys; Subject Term: INTERFACIAL bonding; Subject Term: TEMPERATURE; Subject Term: DENSITY functionals; Subject Term: ENTROPY; Subject Term: OSTWALD ripening; Author-Supplied Keyword: Ab initio calculations; Author-Supplied Keyword: Interfaces; Author-Supplied Keyword: Interfacial free energy; Author-Supplied Keyword: Superalloys; Author-Supplied Keyword: Temperature dependence; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.actamat.2014.04.056 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96999204&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reams, Josiah T. AU - Guenthner, Andrew J. AU - Lamison, Kevin R. AU - Yandek, Gregory R. AU - Swanson, David D. AU - Mabry, Joseph M. T1 - Formulation and physical properties of cyanate ester nanocomposites based on graphene. JO - Journal of Polymer Science Part B: Polymer Physics JF - Journal of Polymer Science Part B: Polymer Physics Y1 - 2014/08/15/ VL - 52 IS - 16 M3 - Article SP - 1061 EP - 1070 SN - 08876266 AB - ABSTRACT We report the thermal, mechanical, and diffusion properties of bisphenol E based polycyanurate nanocomposites with three forms of graphene derived from sequential processing of the same carbon nanostructure. Edge-functionalized graphene nanoplatelets (GNP) were converted to graphene oxide (GO), then heated to produce thermally reduced graphene oxide (TRGO). All three reinforcements were individually mixed with the dicyanate ester of bisphenol E (LECy) at low loading levels and cured to form polycyanurate nanocomposites. GNP, with very low oxygen functionality, was incompatible with the cyanate ester, while the highly oxidized GO formed well-dispersed (though not exfoliated) nanocomposites, with the TRGO forming a good dispersion on mixing but phase separating during cure. The addition of GO, and, to a lesser extent, TRGO, resulted in improved mechanical properties, particularly fracture toughness, with the addition of TRGO having a modestly negative effect on the glass transition temperature. Surprisingly, neither GO nor TRGO addition was effective at slowing down the diffusion of water in the polycyanurate, with the addition of both resulting in increased equilibrium moisture uptake. It thus appears that the trade-off between dispersion and the required level of oxygen functionality acts in a manner to frustrate attempts at minimizing the permeation of water by addition of graphene-based reinforcements. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2014, 52, 1061-1070 [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Polymer Science Part B: Polymer Physics is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOCOMPOSITE materials KW - RESEARCH KW - NANOSTRUCTURED materials -- Research KW - BISPHENOL A KW - PHENOLS KW - CARBON composites KW - compatibility KW - composites KW - crosslinking KW - nanocomposites KW - resins KW - toughness N1 - Accession Number: 96924465; Reams, Josiah T. 1 Guenthner, Andrew J. 2 Lamison, Kevin R. 1 Yandek, Gregory R. 2 Swanson, David D. 2 Mabry, Joseph M. 2; Affiliation: 1: ERC Incorporated, Air Force Research Laboratory 2: Air Force Research Laboratory, Aerospace Systems Directorate; Source Info: Aug2014, Vol. 52 Issue 16, p1061; Subject Term: NANOCOMPOSITE materials; Subject Term: RESEARCH; Subject Term: NANOSTRUCTURED materials -- Research; Subject Term: BISPHENOL A; Subject Term: PHENOLS; Subject Term: CARBON composites; Author-Supplied Keyword: compatibility; Author-Supplied Keyword: composites; Author-Supplied Keyword: crosslinking; Author-Supplied Keyword: nanocomposites; Author-Supplied Keyword: resins; Author-Supplied Keyword: toughness; Number of Pages: 11p; Document Type: Article L3 - 10.1002/polb.23532 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96924465&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mauger, L. AU - Lucas, M. S. AU - Muñoz, J. A. AU - Tracy, S. J. AU - Kresch, M. AU - Xiao, Yuming AU - Chow, Paul AU - Fultz, B. T1 - Nonharmonic phonons in α-iron at high temperatures. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2014/08/08/ VL - 90 IS - 6 M3 - Article SP - 064303-1 EP - 064303-10 SN - 10980121 AB - Phonon densities of states (DOS) of bcc α-57Fe were measured from room temperature through the 1044 K Curie transition and the 1185 K fee γ-Fe phase transition using nuclear resonant inelastic x-ray scattering. At higher temperatures all phonons shift to lower energies (soften) with thermal expansion, but the low transverse modes soften especially rapidly above 700 K, showing strongly nonharmonic behavior that persists through the magnetic transition. Interatomic force constants for the bcc phase were obtained by iteratively fitting a Bom-von Kármán model to the experimental phonon spectra using a genetic algorithm optimization. The second-nearest-neighbor fitted axial force constants weakened significantly at elevated temperatures. An unusually large nonharmonic behavior is reported, which increases the vibrational entropy and accounts for a contribution of 35 meV/atom in the free energy at high temperatures. The nonharmonic contribution to the vibrational entropy follows the thermal trend of the magnetic entropy, and may be coupled to magnetic excitations. A small change in vibrational entropy across the α-γ structural phase transformation is also reported. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHONONS KW - X-ray scattering KW - ENTROPY KW - CONDENSED matter KW - CONDENSED matter physics N1 - Accession Number: 98842213; Mauger, L. 1 Lucas, M. S. 2 Muñoz, J. A. 1 Tracy, S. J. 1 Kresch, M. 3 Xiao, Yuming 4 Chow, Paul 4 Fultz, B. 1; Affiliation: 1: California Institute of Technology, W. M. Keck Laboratory 138-78, Pasadena, California 91125, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 3: Marft, Inc., 101 Irene Court, Belmont, California 94002, USA 4: HPCAT, Geophysical Laboratory, Carnegie Institute of Washington, Argonne, Illinois 60439, USA; Source Info: Aug2014, Vol. 90 Issue 6, p064303-1; Subject Term: PHONONS; Subject Term: X-ray scattering; Subject Term: ENTROPY; Subject Term: CONDENSED matter; Subject Term: CONDENSED matter physics; Number of Pages: 10p; Document Type: Article L3 - 10.1103/PhysRevB.90.064303 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98842213&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davis, Bradley AU - Welch, Katherine AU - Walsh-Hart, Sharon AU - Hanseman, Dennis AU - Petro, Michael AU - Gerlach, Travis AU - Dorlac, Warren AU - Collins, Jocelyn AU - Pritts, Timothy T1 - Effective Teamwork and Communication Mitigate Task Saturation in Simulated Critical Care Air Transport Team Missions. JO - Military Medicine JF - Military Medicine Y1 - 2014/08/02/Aug2014 Supplement VL - 179 IS - 8 M3 - Article SP - 19 EP - 23 PB - AMSUS SN - 00264075 AB - Background: Critical Care Air Transport Teams (CCATTs) are a critical component of the United States Air Force evacuation paradigm. This study was conducted to assess the incidence of task saturation in simulated CCATT missions and to determine if there are predictable performance domains. Methods: Sixteen CCATTs were studied over a 6-month period. Performance was scored using a tool assessing eight domains of performance. Teams were also assessed during critical events to determine the presence or absence of task saturation and its impact on patient care. Results: Sixteen simulated missions were reviewed and 45 crisis events identified. Task saturation was present in 22/45 (49%) of crisis events. Scoring demonstrated that task saturation was associated with poor performance in teamwork (odds ratio [OR] = 1.96), communication (OR = 2.08), and mutual performance monitoring (OR = 1.9), but not maintenance of guidelines, task management, procedural skill, and equipment management. We analyzed the effect of task saturation on adverse patient outcomes during crisis events. Adverse outcomes occurred more often when teams were task saturated as compared to non-task-saturated teams (91% vs. 23%; RR 4.1, p < 0.0001). Conclusions: Task saturation is observed in simulated CCATT missions. Nontechnical skills correlate with task saturation. Task saturation is associated with worsening physiologic derangements in simulated patients. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRITICAL care medicine KW - RESEARCH KW - CIVILIAN evacuation KW - HEALTH care teams KW - TEAMS in the workplace -- Research KW - MISSIONARY medicine N1 - Accession Number: 97441831; Davis, Bradley 1 Welch, Katherine 1 Walsh-Hart, Sharon 2 Hanseman, Dennis 1 Petro, Michael 2 Gerlach, Travis 2 Dorlac, Warren 1 Collins, Jocelyn 1 Pritts, Timothy 1; Affiliation: 1: Department of Surgery and Institute for Military Medicine, University of Cincinnati, 231 Albert Sabin Way, ML 0558, Cincinnati, OH 45267. 2: United States Air Force Center for Sustainment of Trauma and Readiness Skills, 234 Goodman Avenue, Cincinnati, OH 45213.; Source Info: Aug2014 Supplement, Vol. 179 Issue 8, p19; Subject Term: CRITICAL care medicine; Subject Term: RESEARCH; Subject Term: CIVILIAN evacuation; Subject Term: HEALTH care teams; Subject Term: TEAMS in the workplace -- Research; Subject Term: MISSIONARY medicine; NAICS/Industry Codes: 624230 Emergency and Other Relief Services; Number of Pages: 5p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.7205/MILMED-D-13-00240 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97441831&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Albert, J. T1 - Radial diffusion simulations of the 20 September 2007 radiation belt dropout. JO - Annales Geophysicae (09927689) JF - Annales Geophysicae (09927689) Y1 - 2014/08// VL - 32 IS - 8 M3 - Article SP - 925 EP - 934 SN - 09927689 AB - This is a study of a dropout of radiation belt electrons, associated with an isolated solar wind density pulse on 20 September 2007, as seen by the solid-state telescopes (SST) detectors on THEMIS (Time History of Events and Macroscale Interactions during Substorms). Omnidirectional fluxes were converted to phase space density at constant invariants M = 700 MeVG–1 and K = 0.014 RE G½, with the assumption of local pitch angle α ≈ 80° and using the T04 magnetic field model. The last closed drift shell, which was calculated throughout the time interval, never came within the simulation outer boundary of L* = 6. It is found, using several different models for diffusion rates, that radial diffusion alone only allows the data-driven, time-dependent boundary values at Lmax = 6 and Lmin = 3.7 to propagate a few tenths of an RE during the simulation; far too slow to account for the dropout observed over the broad range of L* = 4–5.5. Pitch angle diffusion via resonant interactions with several types of waves (chorus, electromagnetic ion cyclotron waves, and plasmaspheric and plume hiss) also seems problematic, for several reasons which are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Annales Geophysicae (09927689) is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATION belts KW - MAGNETIC storms KW - MAGNETIC fields KW - CYCLOTRON resonance KW - PLASMASPHERE KW - MASS transfer coefficients KW - energetic particles KW - Magnetospheric physics KW - trapped N1 - Accession Number: 97907911; Albert, J. 1; Email Address: jay.albert@us.af.mil; Affiliation: 1: Air Force Research Laboratory, 3550 Aberdeen Avenue SE, Kirtland AFB, NM, USA; Source Info: 2014, Vol. 32 Issue 8, p925; Subject Term: RADIATION belts; Subject Term: MAGNETIC storms; Subject Term: MAGNETIC fields; Subject Term: CYCLOTRON resonance; Subject Term: PLASMASPHERE; Subject Term: MASS transfer coefficients; Author-Supplied Keyword: energetic particles; Author-Supplied Keyword: Magnetospheric physics; Author-Supplied Keyword: trapped; Number of Pages: 10p; Document Type: Article L3 - 10.5194/angeo-32-925-2014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97907911&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patterson, Robert E. AU - Blaha, Leslie M. AU - Grinstein, Georges G. AU - Liggett, Kristen K. AU - Kaveney, David E. AU - Sheldon, Kathleen C. AU - Havig, Paul R. AU - Moore, Jason A. T1 - A human cognition framework for information visualization. JO - Computers & Graphics JF - Computers & Graphics Y1 - 2014/08// VL - 42 M3 - Article SP - 42 EP - 58 SN - 00978493 AB - Abstract: We present a human cognition framework for information visualization. This framework emphasizes how top-down cognitive processing enables the induction of insight, reasoning, and understanding, which are key goals of the visual analytics community. Specifically, we present a set of six leverage points that can be exploited by visualization designers in order to measurably influence certain aspects of human cognition: (1) exogenous attention; (2) endogenous attention; (3) chunking; (4) reasoning with mental models; (5) analogical reasoning; and (6) implicit learning. [Copyright &y& Elsevier] AB - Copyright of Computers & Graphics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COGNITION KW - INFORMATION visualization KW - REASONING (Logic) KW - COMPREHENSION KW - ATTENTION KW - Cognitive augmentation KW - Human cognition KW - Information visualization KW - Visual analytics KW - Visual attention N1 - Accession Number: 96347729; Patterson, Robert E. 1 Blaha, Leslie M. 1 Grinstein, Georges G. 2 Liggett, Kristen K. 1; Email Address: kristen.liggett@us.af.mil Kaveney, David E. 3 Sheldon, Kathleen C. 2 Havig, Paul R. 1 Moore, Jason A. 3; Affiliation: 1: Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, United States 2: Department of Computer Science, University of Massachusetts, Lowell, MA, United States 3: Information Directorate, Air Force Research Laboratory, Rome Research Site, NY, United States; Source Info: Aug2014, Vol. 42, p42; Subject Term: COGNITION; Subject Term: INFORMATION visualization; Subject Term: REASONING (Logic); Subject Term: COMPREHENSION; Subject Term: ATTENTION; Author-Supplied Keyword: Cognitive augmentation; Author-Supplied Keyword: Human cognition; Author-Supplied Keyword: Information visualization; Author-Supplied Keyword: Visual analytics; Author-Supplied Keyword: Visual attention; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.cag.2014.03.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96347729&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Castelluccio, Gustavo M. AU - Musinski, William D. AU - McDowell, David L. T1 - Recent developments in assessing microstructure-sensitive early stage fatigue of polycrystals. JO - Current Opinion in Solid State & Materials Science JF - Current Opinion in Solid State & Materials Science Y1 - 2014/08// VL - 18 IS - 4 M3 - Article SP - 180 EP - 187 SN - 13590286 AB - Fatigue failure is a leading concern for many applications involving structures for transportation, manufacturing, medical devices, and electronic components. Recent advances in modeling and simulation, coupled with in situ experimental techniques, have enhanced the understanding required to distinguish and characterize mechanisms of fatigue crack formation and early growth at scales of underlying microstructure. In particular, microstructure substantially influences high cycle fatigue resistance and contributes to variability of the fatigue response. This paper reviews the confluence of recent experimental and modeling advances aimed at understanding and modeling of the formation and early growth of fatigue cracks with size on the order of dominant microstructure attributes. [ABSTRACT FROM AUTHOR] AB - Copyright of Current Opinion in Solid State & Materials Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - MATERIALS -- Fatigue KW - POLYCRYSTALS KW - MEDICAL equipment KW - FATIGUE cracks KW - Experiments KW - Fatigue KW - Microstructure KW - Modeling KW - Small cracks N1 - Accession Number: 97570480; Castelluccio, Gustavo M. 1 Musinski, William D. 1,2 McDowell, David L. 1,3; Email Address: david.mcdowell@mse.gatech.edu; Affiliation: 1: Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 3: School of Materials Science & Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; Source Info: Aug2014, Vol. 18 Issue 4, p180; Subject Term: MICROSTRUCTURE; Subject Term: MATERIALS -- Fatigue; Subject Term: POLYCRYSTALS; Subject Term: MEDICAL equipment; Subject Term: FATIGUE cracks; Author-Supplied Keyword: Experiments; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Small cracks; NAICS/Industry Codes: 423450 Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers; NAICS/Industry Codes: 417930 Professional machinery, equipment and supplies merchant wholesalers; NAICS/Industry Codes: 339110 Medical equipment and supplies manufacturing; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 339112 Surgical and Medical Instrument Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.cossms.2014.03.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97570480&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boxx, I. AU - Carter, C. AU - Meier, W. T1 - On the feasibility of tomographic-PIV with low pulse energy illumination in a lifted turbulent jet flame. JO - Experiments in Fluids JF - Experiments in Fluids Y1 - 2014/08// VL - 55 IS - 8 M3 - Article SP - 1 EP - 17 SN - 07234864 AB - Tomographic particle image velocimetry (tomographic-PIV) is a recently developed measurement technique used to acquire volumetric velocity field data in liquid and gaseous flows. The technique relies on line-of-sight reconstruction of the rays between a 3D particle distribution and a multi-camera imaging system. In a turbulent flame, however, index-of-refraction variations resulting from local heat-release may inhibit reconstruction and thereby render the technique infeasible. The objective of this study was to test the efficacy of tomographic-PIV in a turbulent flame. An additional goal was to determine the feasibility of acquiring usable tomographic-PIV measurements in a turbulent flame at multi-kHz acquisition rates with current-generation laser and camera technology. To this end, a setup consisting of four complementary metal oxide semiconductor cameras and a dual-cavity Nd:YAG laser was implemented to test the technique in a lifted turbulent jet flame. While the cameras were capable of kHz-rate image acquisition, the laser operated at a pulse repetition rate of only 10 Hz. However, use of this laser allowed exploration of the required pulse energy and thus power for a kHz-rate system. The imaged region was 29 × 28 × 2.7 mm in size. The tomographic reconstruction of the 3D particle distributions was accomplished using the multiplicative algebraic reconstruction technique. The results indicate that volumetric velocimetry via tomographic-PIV is feasible with pulse energies of 25 mJ, which is within the capability of current-generation kHz-rate diode-pumped solid-state lasers. [ABSTRACT FROM AUTHOR] AB - Copyright of Experiments in Fluids is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLE image velocimetry KW - IMAGING systems KW - HEAT release rates KW - FLOW velocity KW - METAL oxide semiconductors KW - DIODE-pumped solid state lasers N1 - Accession Number: 97565476; Boxx, I. 1; Email Address: Isaac.Boxx@dlr.de Carter, C. 2 Meier, W. 1; Affiliation: 1: Deutsches Zentrum für Luft- und Raumfahrt e.V., Stuttgart Germany 2: Air Force Research Laboratory, Wright-Patterson AFB, Dayton USA; Source Info: Aug2014, Vol. 55 Issue 8, p1; Subject Term: PARTICLE image velocimetry; Subject Term: IMAGING systems; Subject Term: HEAT release rates; Subject Term: FLOW velocity; Subject Term: METAL oxide semiconductors; Subject Term: DIODE-pumped solid state lasers; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; Number of Pages: 17p; Document Type: Article L3 - 10.1007/s00348-014-1771-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97565476&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Greenwood, Andrew D. AU - Christlieb, Andrew J. AU - Hoff, Brad W. AU - Heidger, Susan L. T1 - FDTD/Flux-Corrected Transport Model for Highly Non-Linear Dielectrics. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2014/08// VL - 62 IS - 8 M3 - Article SP - 4365 EP - 4368 SN - 0018926X AB - Non-linear ferro-electric materials exhibit electromagnetic shock-forming properties which can be a challenge for electromagnetic modeling algorithms such as finite-difference time-domain (FDTD). If the material response time is sufficiently fast, the shock fronts steepen until the Nyquist sampling criteria is violated, and the resulting aliasing leads to spurious grid oscillations. A flux corrected transport (FCT) algorithm is adapted for use on the staggered FDTD mesh and effectively removes the spurious oscillations. Numerical results demonstrate the effectiveness of the algorithm. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FERROELECTRIC materials KW - ELECTROMAGNETIC waves KW - FINITE difference time domain method KW - REACTION time KW - SAMPLING theorem KW - Finite difference methods KW - Finite-difference time-domain (FDTD) KW - flux corrected transport KW - Materials KW - Mathematical model KW - nonlinear KW - Oscillators KW - Shock waves KW - Time factors KW - Time-domain analysis N1 - Accession Number: 97379591; Greenwood, Andrew D. 1 Christlieb, Andrew J. 2 Hoff, Brad W. 1 Heidger, Susan L. 1; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, NM, USA 2: Michigan State University, East Lansing, MI, USA; Source Info: Aug2014, Vol. 62 Issue 8, p4365; Subject Term: FERROELECTRIC materials; Subject Term: ELECTROMAGNETIC waves; Subject Term: FINITE difference time domain method; Subject Term: REACTION time; Subject Term: SAMPLING theorem; Author-Supplied Keyword: Finite difference methods; Author-Supplied Keyword: Finite-difference time-domain (FDTD); Author-Supplied Keyword: flux corrected transport; Author-Supplied Keyword: Materials; Author-Supplied Keyword: Mathematical model; Author-Supplied Keyword: nonlinear; Author-Supplied Keyword: Oscillators; Author-Supplied Keyword: Shock waves; Author-Supplied Keyword: Time factors; Author-Supplied Keyword: Time-domain analysis; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TAP.2014.2322908 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97379591&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hanchak, Michael S. AU - Vangsness, Marlin D. AU - Byrd, Larry W. AU - Ervin, Jaime S. T1 - Thin film evaporation of n-octane on silicon: Experiments and theory. JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2014/08// VL - 75 M3 - Article SP - 196 EP - 206 SN - 00179310 AB - Abstract: Microscope-based reflectometry was used to measure the thickness profiles of thin films of n-octane on silicon wafer substrates. Thin films, created in an axisymmetric capillary feeder, were subjected to heat or a nitrogen flow to promote evaporation into a saturated gas phase. Steady state film profiles were established, with a non-evaporating adsorbed film transitioning to the intrinsic meniscus. The reflectometer was coupled with micro-positioning motorized stages to provide two-dimensional profiles of the film thickness. A numerical model was formulated to include lubrication theory of the liquid flow within the film, heat conduction across the film from the heated wall to the liquid–vapor interface, kinetic theory of evaporation from the interface to the vapor phase, and disjoining pressure based on a retarded van der Waals interaction. When combined, the governing equations form a fourth-order, nonlinear differential equation for the film thickness vs. distance, which is solved numerically and compared to the experimental data. Useful results of the model include the liquid–vapor interface temperature, the Hamaker coefficient, and the evaporative mass flux profile. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EVAPORATION (Chemistry) KW - THIN films KW - OCTANE KW - SILICON wafers KW - THICKNESS measurement KW - MICROSCOPES KW - REFLECTOMETRY KW - GAS phase reactions KW - Disjoining pressure KW - Evaporation KW - Octane KW - Reflectometry KW - Thin film N1 - Accession Number: 96188497; Hanchak, Michael S. 1; Email Address: Michael.hanchak.ctr@wpafb.af.mil Vangsness, Marlin D. 1 Byrd, Larry W. 2 Ervin, Jaime S. 1; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0044, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Aug2014, Vol. 75, p196; Subject Term: EVAPORATION (Chemistry); Subject Term: THIN films; Subject Term: OCTANE; Subject Term: SILICON wafers; Subject Term: THICKNESS measurement; Subject Term: MICROSCOPES; Subject Term: REFLECTOMETRY; Subject Term: GAS phase reactions; Author-Supplied Keyword: Disjoining pressure; Author-Supplied Keyword: Evaporation; Author-Supplied Keyword: Octane; Author-Supplied Keyword: Reflectometry; Author-Supplied Keyword: Thin film; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2014.03.063 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96188497&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, Feishe AU - Shen, Lixin AU - Suter, Bruce W. AU - Xu, Yuesheng T1 - Reprint of “Nesterov’s algorithm solving dual formulation for compressed sensing”. JO - Journal of Computational & Applied Mathematics JF - Journal of Computational & Applied Mathematics Y1 - 2014/08// VL - 265 M3 - Article SP - 52 EP - 68 SN - 03770427 AB - Abstract: We develop efficient algorithms for solving the compressed sensing problem. We modify the standard regularization model for compressed sensing by adding a quadratic term to its objective function so that the objective function of the dual formulation of the modified model is Lipschitz continuous. In this way, we can apply the well-known Nesterov algorithm to solve the dual formulation and the resulting algorithms have a quadratic convergence. Numerical results presented in this paper show that the proposed algorithms outperform significantly the state-of-the-art algorithm NESTA in accuracy. [Copyright &y& Elsevier] AB - Copyright of Journal of Computational & Applied Mathematics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - MATHEMATICAL formulas KW - COMPRESSED sensing (Signal processing) KW - MATHEMATICAL models KW - REGULARIZATION (Mathematics) KW - QUADRATIC forms KW - LIPSCHITZ spaces KW - Compressed sensing KW - Moreau envelope KW - Nesterov’s algorithm KW - Proximity operator KW - regularization N1 - Accession Number: 94911096; Chen, Feishe 1; Email Address: fchen05@syr.edu Shen, Lixin 1; Email Address: lshen03@syr.edu Suter, Bruce W. 2; Email Address: Bruce.Suter@rl.af.mil Xu, Yuesheng 1; Affiliation: 1: Department of Mathematics, Syracuse University, Syracuse, NY 13244, USA 2: Air Force Research Laboratory, AFRL/RITB, Rome, NY 13441-4505, USA; Source Info: Aug2014, Vol. 265, p52; Subject Term: ALGORITHMS; Subject Term: MATHEMATICAL formulas; Subject Term: COMPRESSED sensing (Signal processing); Subject Term: MATHEMATICAL models; Subject Term: REGULARIZATION (Mathematics); Subject Term: QUADRATIC forms; Subject Term: LIPSCHITZ spaces; Author-Supplied Keyword: Compressed sensing; Author-Supplied Keyword: Moreau envelope; Author-Supplied Keyword: Nesterov’s algorithm; Author-Supplied Keyword: Proximity operator; Author-Supplied Keyword: regularization; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.cam.2014.01.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94911096&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thomas, Robin D. AU - Moses, Nathan C. AU - Semple, Erin A. AU - Strang, Adam J. T1 - An efficient algorithm for the computation of average mutual information: Validation and implementation in Matlab. JO - Journal of Mathematical Psychology JF - Journal of Mathematical Psychology Y1 - 2014/08// VL - 61 M3 - Article SP - 45 EP - 59 SN - 00222496 AB - Average mutual information (AMI) measures the dependence between pairs of random variables. It has been used in many applications including blind source separation, data mining, neural synchronicity assessment, and state space reconstruction in human movement studies. Presently, several algorithms and computational code exist to estimate AMI. However, most are difficult to use and/or understand the manner by which AMI is calculated. We offer a straightforward and implementable function in Matlab (Mathworks, Inc.) for the computation of AMI in relatively modest sized data streams ( N < ∼ 15,000 ). Our algorithm incorporates some best practices for statistical estimation that improves accuracy over other readily available options. We present three validation tests: (i) recovery of a known theoretical expected mutual information in a bivariate Gaussian random variable, (ii) invariance with respect to marginal distribution characteristics, and (iii) optimum time-delay selection in state space reconstruction. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Mathematical Psychology is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - GAUSSIAN function KW - NUMERICAL analysis KW - APPLIED mathematics KW - HUMAN mechanics KW - Copula modeling KW - Mutual information KW - Numerical computation KW - State-space reconstruction KW - MATLAB (Computer software) N1 - Accession Number: 99065141; Thomas, Robin D. 1; Email Address: thomasrd@miamioh.edu Moses, Nathan C. 2 Semple, Erin A. 1 Strang, Adam J. 3; Affiliation: 1: Department of Psychology, Miami University, United States 2: Department of Mathematical Sciences, Purdue University, United States 3: Consortium Research Fellows Program/Air Force Research Laboratory, Wright-Patterson AFB, OH, United States; Source Info: Aug2014, Vol. 61, p45; Subject Term: ALGORITHMS; Subject Term: GAUSSIAN function; Subject Term: NUMERICAL analysis; Subject Term: APPLIED mathematics; Subject Term: HUMAN mechanics; Author-Supplied Keyword: Copula modeling; Author-Supplied Keyword: Mutual information; Author-Supplied Keyword: Numerical computation; Author-Supplied Keyword: State-space reconstruction; Reviews & Products: MATLAB (Computer software); Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.jmp.2014.09.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99065141&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - TILEY, J.S. AU - SHIVELEY, A.R. AU - PILCHAK, A.L. AU - SHADE, P.A. AU - GROEBER, M.A. T1 - 3D reconstruction of prior β grains in friction stir-processed Ti-6Al-4V. JO - Journal of Microscopy JF - Journal of Microscopy Y1 - 2014/08// VL - 255 IS - 2 M3 - Article SP - 71 EP - 77 PB - Wiley-Blackwell SN - 00222720 AB - The prior β grain structure and orientations in the central stir zone of friction stir-processed Ti-6Al-4V were reconstructed from measured α phase orientations obtained by three-dimensional serial sectioning in a dual-beam focused ion beam scanning electron microscope. The data were processed to obtain the α colony and β grain size distributions in the volume. Several β grains were individually analysed to determine the total number of unique α variants and the respective volume fractions of each. The analysis revealed that some grains experienced overwhelming variant selection (i.e. one variant dominated) whereas other β grains contained a more evenly distributed mixture of all 12 variants. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microscopy is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMAGE reconstruction KW - FRICTION KW - TITANIUM-aluminum-vanadium alloys KW - ION beams KW - SCANNING electron microscopy KW - PARTICLE size distribution KW - 3D reconstruction KW - EBSD characterization KW - titanium alloys N1 - Accession Number: 97319766; TILEY, J.S. 1 SHIVELEY, A.R. 1,2 PILCHAK, A.L. 1 SHADE, P.A. 1 GROEBER, M.A. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB 2: Universal Energy Systems (UES), Wright-Patterson AFB; Source Info: Aug2014, Vol. 255 Issue 2, p71; Subject Term: IMAGE reconstruction; Subject Term: FRICTION; Subject Term: TITANIUM-aluminum-vanadium alloys; Subject Term: ION beams; Subject Term: SCANNING electron microscopy; Subject Term: PARTICLE size distribution; Author-Supplied Keyword: 3D reconstruction; Author-Supplied Keyword: EBSD characterization; Author-Supplied Keyword: titanium alloys; Number of Pages: 7p; Illustrations: 1 Black and White Photograph, 5 Graphs; Document Type: Article L3 - 10.1111/jmi.12137 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97319766&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Graham, Jeffrey J. AU - Matthew Mann, J. AU - Zens, Timothy W.C. AU - McClory, John W. T1 - Hydrothermal phase stability study of Li2B4O7. JO - Journal of Solid State Chemistry JF - Journal of Solid State Chemistry Y1 - 2014/08// VL - 216 M3 - Article SP - 79 EP - 84 SN - 00224596 AB - Growth of Li2B4O7 by the hydrothermal method was attempted in 10−6 MLiOH, by both spontaneous nucleation and transport growth. Li2B4O7 grew out of the first spontaneous nucleation reaction, while the seed dissolved and γ-LiBO2 formed during the transport growth reactions. A species thermodynamic stability study showed that γ-LiBO2 formed exclusively from 350°C to 550°C, and Li3B5O8(OH)2 was observed at 250°C; Li2B4O7 was not observed. A solubility study on Li2B4O7 did not achieve equilibrium conditions, but did demonstrate that γ-LiBO2 is significantly more thermodynamically stable than Li2B4O7 under the tested conditions. Formation of Li2B4O7 hydrothermally was shown to result from kinetic growth. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Solid State Chemistry is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LITHIUM compounds KW - BORATES KW - CRYSTAL growth KW - NUCLEATION KW - SOLUBILITY KW - THERMODYNAMIC equilibrium KW - Borates KW - Hydrothermal growth KW - Kinetic growth KW - Spontaneous nucleation N1 - Accession Number: 96582753; Graham, Jeffrey J. 1; Email Address: jeffrey.graham@dtra.mil Matthew Mann, J. 2; Email Address: james.mann.11@us.af.mil Zens, Timothy W.C. 1; Email Address: timothy.zens@afit.edu McClory, John W. 1; Email Address: john.mcclory@afit.edu; Affiliation: 1: Department of Engineering Physics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433-7765, United States 2: Air Force Research Laboratory Sensors Directorate, 2241 Avionics Circle, Bldg 600, Wright-Patterson AFB, OH 45433-7765, United States; Source Info: Aug2014, Vol. 216, p79; Subject Term: LITHIUM compounds; Subject Term: BORATES; Subject Term: CRYSTAL growth; Subject Term: NUCLEATION; Subject Term: SOLUBILITY; Subject Term: THERMODYNAMIC equilibrium; Author-Supplied Keyword: Borates; Author-Supplied Keyword: Hydrothermal growth; Author-Supplied Keyword: Kinetic growth; Author-Supplied Keyword: Spontaneous nucleation; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jssc.2014.04.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96582753&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Garcia, Eloy AU - Yongcan Cao AU - Casbeer, David W. T1 - Model-based event-triggered multi-vehicle coordinated tracking control using reduced order models. JO - Journal of the Franklin Institute JF - Journal of the Franklin Institute Y1 - 2014/08// VL - 351 IS - 8 M3 - Article SP - 4271 EP - 4286 SN - 00160032 AB - The coordinated tracking problem where a group of followers intercepts a dynamic leader is studied. It is shown in this paper that reduction of inter-agent communication is obtained and improved performance is achieved when each follower implements dynamical models of neighbors and by using an event-triggered control strategy that requires each agent to send measurement updates only when necessary. The results in this paper consider directed graphs and the possible existence of cycles. Performance bounds on the tracking error have been obtained, which are functions of the communication topology and the event thresholds. This approach is extended to consider measurement noise and similar bounds are presented for this case. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Franklin Institute is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRACKING control systems (Engineering) KW - TOPOLOGY KW - BOUNDS (Mathematics) KW - DIRECTED graphs KW - PATHS & cycles (Graph theory) KW - FUNCTIONS (Mathematics) N1 - Accession Number: 97315546; Garcia, Eloy 1,2; Email Address: elgarcia@infoscitex.com Yongcan Cao 2 Casbeer, David W. 2; Affiliation: 1: Infoscitex Corporation, Dayton, OH 45431, USA 2: Control Science Center of Excellence, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Aug2014, Vol. 351 Issue 8, p4271; Subject Term: TRACKING control systems (Engineering); Subject Term: TOPOLOGY; Subject Term: BOUNDS (Mathematics); Subject Term: DIRECTED graphs; Subject Term: PATHS & cycles (Graph theory); Subject Term: FUNCTIONS (Mathematics); Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.jfranklin.2014.05.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97315546&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Leiweke, Robert J. AU - Ganguly, Biswa N. AU - Scofield, James D. T1 - Voltage and pressure scaling of streamer dynamics in a helium plasma jet with N2 co-flow. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2014/08// VL - 21 IS - 8 M3 - Article SP - 1 EP - 11 PB - American Institute of Physics SN - 1070664X AB - Positive polarity applied voltage and gas pressure dependent scaling of cathode directed streamer propagation properties in helium gas flow guided capillary dielectric barrier discharge have been quantified from streamer velocity, streamer current, and streamer optical diameter measurements. All measurements of the non-stochastic streamer properties have been performed in a variable gas pressure glass cell with N2 co-flow and under self-consistent Poisson electric field dominated conditions to permit data comparison with 2-D streamer dynamics models in air/nitrogen. The streamer optical diameter was found to be nearly independent of both gas pressures, from 170 Torr up to 760 Torr, and also for applied voltages from 6 to 11 kV at 520 Torr. The streamer velocity was found to increase quadratically with increased applied voltage. These observed differences in the 2-D scaling properties of ionization wave sustained cathode directed streamer propagation in helium flow channel with N2 annular co-flow compared to the streamer propagation in air or nitrogen have been shown to be caused by the remnant ionization distribution due to large differences in the dissociative recombination rates of He2+ versus N4+ ions, for this 5 kHz repetition rate applied voltage pulse generated streamers. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC potential KW - PLASMA pressure KW - ELECTRIC discharges KW - HELIUM plasmas KW - PLASMA jets KW - GAS flow N1 - Accession Number: 98694961; Leiweke, Robert J. 1 Ganguly, Biswa N. 2 Scofield, James D. 2; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Road, Dayton, Ohio 45432, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7919, USA; Source Info: 2014, Vol. 21 Issue 8, p1; Subject Term: ELECTRIC potential; Subject Term: PLASMA pressure; Subject Term: ELECTRIC discharges; Subject Term: HELIUM plasmas; Subject Term: PLASMA jets; Subject Term: GAS flow; Number of Pages: 11p; Illustrations: 1 Color Photograph, 3 Charts, 10 Graphs; Document Type: Article L3 - 10.1063/1.4892968 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98694961&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haiges, Ralf AU - Buszek, Robert J. AU - Boatz, Jerry A. AU - Christe, Karl O. T1 - Preparation of the First Manganese(III) and Manganese(IV) Azides. JO - Angewandte Chemie International Edition JF - Angewandte Chemie International Edition Y1 - 2014/07/28/ VL - 53 IS - 31 M3 - Article SP - 8200 EP - 8205 SN - 14337851 AB - Fluoride-azide exchange reactions of Me3SiN3 with MnF2 and MnF3 in acetonitrile resulted in the isolation of Mn(N3)2 and Mn(N3)3·CH3CN, respectively. While Mn(N3)2 forms [PPh4]2[Mn(N3)4] and (bipy)2Mn(N3)2 upon reaction with PPh4N3 and 2,2'-bipyridine (bipy), respectively, the manganese(III) azide undergoes disproportionation and forms mixtures of [PPh4]2[Mn(N3)4] and [PPh4]2[Mn(N3)6], as well as (bipy)2Mn(N3)2 and (bipy)Mn(N3)4. Neat and highly sensitive Cs2[Mn(N3)6] was obtained through the reaction of Cs2MnF6 with Me3SiN3 in CH3CN. [ABSTRACT FROM AUTHOR] AB - Copyright of Angewandte Chemie International Edition is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MANGANESE KW - FLUORIDES KW - AZIDES KW - EXCHANGE reactions KW - ACETONITRILE KW - azides KW - disproportionation KW - manganese KW - polyazides KW - structure elucidation N1 - Accession Number: 108794833; Haiges, Ralf 1; Email Address: haiges@usc.edu Buszek, Robert J. 2 Boatz, Jerry A. 3 Christe, Karl O. 1; Affiliation: 1: Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, CA 90089-1661 (USA) 2: ERC, Inc., Air Force Research Laboratory (AFRL/RQRP), 10 East Saturn Boulevard, Edwards Air Force Base, CA 93524 (USA) 3: Rocket Propulsion Division, Air Force Research Laboratory (AFRL/RQRP), 10 East Saturn Boulevard, Edwards Air Force Base, CA 93524 (USA; Source Info: 7/28/2014, Vol. 53 Issue 31, p8200; Subject Term: MANGANESE; Subject Term: FLUORIDES; Subject Term: AZIDES; Subject Term: EXCHANGE reactions; Subject Term: ACETONITRILE; Author-Supplied Keyword: azides; Author-Supplied Keyword: disproportionation; Author-Supplied Keyword: manganese; Author-Supplied Keyword: polyazides; Author-Supplied Keyword: structure elucidation; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 6p; Document Type: Article L3 - 10.1002/anie.201404735 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108794833&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Raghunathan, R. AU - Grillot, F. AU - Mee, J. K. AU - Murrell, D. AU - Kovanis, V. AU - Lester, L. F. T1 - Tuning the external optical feedback-sensitivity of a passively mode-locked quantum dot laser. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/07/28/ VL - 105 IS - 4 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00036951 AB - The external optical feedback-sensitivity of a two-section, passively mode-locked quantum dot laser operating at elevated temperature is experimentally investigated as a function of absorber bias voltage. Results show that the reverse-bias voltage on the absorber has a direct impact on the damping rate of the free-running relaxation oscillations of the optical signal output, thereby enabling interactive external control over the feedback-response of the device, even under the nearly resonant cavity configuration. The combination of high temperature operation and tunable feedback-sensitivity is highly promising from a technological standpoint, in particular, for applications requiring monolithic integration of multi-component architectures on a single chip in order to accomplish, for instance, the dual-objectives of stable pulse quality and isolation from parasitic reflections. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TUNING (Electronics) KW - OPTICAL feedback KW - QUANTUM dot lasers KW - MODE-locked lasers KW - OPTICAL signal detection KW - HIGH temperature physics N1 - Accession Number: 97347357; Raghunathan, R. 1; Email Address: raghunat@vt.edu Grillot, F. 2 Mee, J. K. 3 Murrell, D. 1 Kovanis, V. 1 Lester, L. F. 1; Affiliation: 1: Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, 302 Whittemore Hall, Blacksburg, Virginia 24061, USA 2: Tèlècom ParisTech, Ecole Nationale Superieure des Tèlècommunications, CNRS LTCI, 46 rue Barrault, 75634 Paris Cedex 13, France 3: Air Force Research Laboratory - Space Electronics Branch, Kirtland AFB, Albuquerque, New Mexico 87117, USA; Source Info: 7/28/2014, Vol. 105 Issue 4, p1; Subject Term: TUNING (Electronics); Subject Term: OPTICAL feedback; Subject Term: QUANTUM dot lasers; Subject Term: MODE-locked lasers; Subject Term: OPTICAL signal detection; Subject Term: HIGH temperature physics; Number of Pages: 5p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.4891576 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97347357&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bedford, Nicholas M. AU - Bhandari, Rohit AU - Slocik, Joseph M. AU - Seifert, Soenke AU - Naik, Rajesh R. AU - Knecht, Marc R. T1 - Peptide-Modified Dendrimers as Templates for the Productionof Highly Reactive Catalytic Nanomaterials. JO - Chemistry of Materials JF - Chemistry of Materials Y1 - 2014/07/22/ VL - 26 IS - 14 M3 - Article SP - 4082 EP - 4091 SN - 08974756 AB - Peptide-drivennanomaterials synthesis and assembly has becomea significant research thrust due to the capability to generate arange of multifunctional materials with high spatial precision andtunable properties. Despite the extensive amount of available literature,the majority of studies report the use of free peptides to drive synthesisand assembly. Such strategies are not an entirely accurate representationof nature, as many materials binding peptides found in biologicalsystems are sterically constrained to a larger biological motif. Hereinwe report the synthesis of catalytic Pd nanomaterials using constrainedpeptides covalently attached to the surface of small, water-solubledendrimers. Using the R5 peptide conjugated to polyamidoamine dendrimeras a bioconjugate, Pd nanomaterials were generated that displayedaltered morphologies compared to nanomaterials templated with freeR5. It was discovered that the peptide surface density on the dendrimeraffected the resulting nanoscale morphology. Furthermore, the catalyticactivities of Pd materials templated with R5/dendrimer are higheras compared to the R5-templated Pd materials for the hydrogenationof allyl alcohol, with an average increase in turnover frequency of∼1500 mol product (mol Pd × h)−1. Smallangle X-ray scattering analysis and dynamic light scattering indicatethat Pd derived from R5/dendrimer templates remained less aggregatedin solution and displayed more available reactive Pd surface area.Such morphological changes in solution are attributed to the constrainedpeptide binding motifs, which altered the Pd morphology and subsequentproperties. Moreover, the results of this study suggest that constrainedmaterials binding peptide systems can be employed as a means to altermorphology and improve resulting properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemistry of Materials is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PEPTIDES KW - DENDRIMERS KW - CHEMICAL templates KW - CHEMICAL reactions KW - CATALYTIC activity KW - NANOSTRUCTURED materials -- Synthesis N1 - Accession Number: 97188853; Bedford, Nicholas M. 1 Bhandari, Rohit 1 Slocik, Joseph M. 1 Seifert, Soenke 1 Naik, Rajesh R. 1 Knecht, Marc R. 1; Affiliation: 1: †Materialsand Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, United States; Source Info: Jul2014, Vol. 26 Issue 14, p4082; Subject Term: PEPTIDES; Subject Term: DENDRIMERS; Subject Term: CHEMICAL templates; Subject Term: CHEMICAL reactions; Subject Term: CATALYTIC activity; Subject Term: NANOSTRUCTURED materials -- Synthesis; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97188853&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eyink, K. G. AU - Szmulowicz, F. AU - Esposito, D. AU - Grazulis, L. AU - Hill, M. AU - Mahalingam, K. AU - Aronow, A. J. T1 - Evaluation of thickness and strain of thin planar layers of InAs on GaAs(001) using spectroscopic ellipsometry. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/07/21/ VL - 105 IS - 3 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00036951 AB - We develop a technique for accurately measuring thickness of planar InAs films grown on (001) GaAs by spectroscopic ellipsometry, using bulk optical constants. We observe that the critical point structure for the E1 and E¹ + Δ1 transitions extracted from the measured dielectric properties varies with strain in the layer. Transmission electron microscopy confirms the extracted thickness and measures the residual strain based on the dislocation spacing in the film. At small thickness, the E1 critical point is seen to markedly deviate from the dependence predicted by deformation potential theory and appears to be consistent with additional quantum confinement effects. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRUM analysis KW - ELLIPSOMETRY KW - PLANAR waveguides KW - DIELECTRIC properties KW - TRANSMISSION electron microscopy N1 - Accession Number: 97255459; Eyink, K. G. 1 Szmulowicz, F. 1 Esposito, D. 1 Grazulis, L. 1 Hill, M. 1 Mahalingam, K. 1 Aronow, A. J. 1; Affiliation: 1: Nano Electronic Materials Branch (RXAN), Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7707, USA; Source Info: 7/21/2014, Vol. 105 Issue 3, p1; Subject Term: SPECTRUM analysis; Subject Term: ELLIPSOMETRY; Subject Term: PLANAR waveguides; Subject Term: DIELECTRIC properties; Subject Term: TRANSMISSION electron microscopy; Number of Pages: 4p; Illustrations: 2 Black and White Photographs, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.4890236 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97255459&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiang, Wei C. AU - Zhang, Jidong AU - Usechak, Nicholas G. AU - Lin, Qiang T1 - Dispersion engineering of high-Q silicon microresonators via thermal oxidation. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/07/21/ VL - 105 IS - 3 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00036951 AB - We propose and demonstrate a convenient and sensitive technique for precise engineering of group-velocity dispersion in high-Q silicon microresonators. By accurately controlling the surface-oxidation thickness of silicon microdisk resonators, we are able to precisely manage the zero-dispersion wavelength, while simultaneously further improving the high optical quality of our devices, with the optical Q close to a million. The demonstrated dispersion management allows us to achieve parametric generation with precisely engineerable emission wavelengths, which shows great potential for application in integrated silicon nonlinear and quantum photonics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISPERSION KW - SILICON KW - MICRORESONATORS (Optoelectronics) KW - THERMAL oxidation (Materials science) KW - MICRODISK resonators KW - WAVELENGTHS N1 - Accession Number: 97255504; Jiang, Wei C. 1 Zhang, Jidong 2 Usechak, Nicholas G. 3 Lin, Qiang 1,2; Email Address: qiang.lin@rochester.edu; Affiliation: 1: Institute of Optics, University of Rochester, Rochester, New York 14627, USA 2: Department of Electrical and Computer Engineering, University of Rochester, Rochester, New York 14627, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 7/21/2014, Vol. 105 Issue 3, p1; Subject Term: DISPERSION; Subject Term: SILICON; Subject Term: MICRORESONATORS (Optoelectronics); Subject Term: THERMAL oxidation (Materials science); Subject Term: MICRODISK resonators; Subject Term: WAVELENGTHS; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 4p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.4890986 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97255504&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Warner AU - McDonald, Jonathan AU - Alsing, Paul AU - Gu, David AU - Yau, Shing-Tung T1 - Simplicial Ricci Flow. JO - Communications in Mathematical Physics JF - Communications in Mathematical Physics Y1 - 2014/07/15/ VL - 329 IS - 2 M3 - Article SP - 579 EP - 608 PB - Springer Science & Business Media B.V. SN - 00103616 AB - We construct a discrete form of Hamilton's Ricci flow (RF) equations for a d-dimensional piecewise flat simplicial geometry, $${{\mathcal S}}$$ . These new algebraic equations are derived using the discrete formulation of Einstein's theory of general relativity known as Regge calculus. A Regge-Ricci flow (RRF) equation can be associated to each edge, ℓ, of a simplicial lattice. In defining this equation, we find it convenient to utilize both the simplicial lattice $${{\mathcal S}}$$ and its circumcentric dual lattice, $${{\mathcal S}^*}$$ . In particular, the RRF equation associated to ℓ is naturally defined on a d-dimensional hybrid block connecting ℓ with its ( d−1)-dimensional circumcentric dual cell, ℓ. We show that this equation is expressed as the proportionality between (1) the simplicial Ricci tensor, Rc, associated with the edge $${\ell\in{\mathcal S}}$$ , and (2) a certain volume weighted average of the fractional rate of change of the edges, $${\lambda\in \ell^*}$$ , of the circumcentric dual lattice, $${{\mathcal S}^*}$$ , that are in the dual of ℓ. The inherent orthogonality between elements of $${\mathcal S}$$ and their duals in $${{\mathcal S}^*}$$ provide a simple geometric representation of Hamilton's RF equations. In this paper we utilize the well established theories of Regge calculus, or equivalently discrete exterior calculus, to construct these equations. We solve these equations for a few illustrative examples. [ABSTRACT FROM AUTHOR] AB - Copyright of Communications in Mathematical Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RICCI flow KW - ALGEBRAIC equations KW - EINSTEIN'S theory of solids KW - GENERAL relativity (Physics) KW - PIECEWISE linear topology KW - LATTICE theory N1 - Accession Number: 96151681; Miller, Warner; Email Address: wam@fau.edu McDonald, Jonathan 1 Alsing, Paul 2 Gu, David 3 Yau, Shing-Tung 1; Affiliation: 1: Department of Mathematics, Harvard University, Cambridge 02138 USA 2: Air Force Research Laboratory, Information Directorate, Rome 13441 USA 3: Department of Computer Science, Stony Brook University, Stony Brook 11794 USA; Source Info: Jul2014, Vol. 329 Issue 2, p579; Subject Term: RICCI flow; Subject Term: ALGEBRAIC equations; Subject Term: EINSTEIN'S theory of solids; Subject Term: GENERAL relativity (Physics); Subject Term: PIECEWISE linear topology; Subject Term: LATTICE theory; Number of Pages: 30p; Document Type: Article L3 - 10.1007/s00220-014-1911-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96151681&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Allen, Kenneth W. AU - Darafsheh, Arash AU - Abolmaali, Farzaneh AU - Mojaverian, Neda AU - Limberopoulos, Nicholaos I. AU - Lupu, Anatole AU - Astratov, Vasily N. T1 - Microsphere-chain waveguides: Focusing and transport properties. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/07/14/ VL - 105 IS - 2 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00036951 AB - It is shown that the focusing properties of polystyrene microsphere-chain waveguides (MCWs) formed by sufficiently large spheres (D≥20λ, where D is the sphere diameter and λ is the wavelength of light) scale with the sphere diameter as predicted by geometrical optics. However, this scaling behavior does not hold for mesoscale MCWs with D≤10λ resulting in a periodical focusing with gradually reducing beam waists and in extremely small propagation losses. The observed effects are related to properties of nanojet-induced and periodically focused modes in such structures. The results can be used for developing focusing microprobes, laser scalpels, and polarization filters. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYSTYRENE KW - WAVEGUIDES KW - WAVELENGTHS KW - GEOMETRICAL optics KW - THEORY of wave motion N1 - Accession Number: 97159058; Allen, Kenneth W. 1,2; Email Address: kallen62@uncc.edu Darafsheh, Arash 1 Abolmaali, Farzaneh 1 Mojaverian, Neda 2 Limberopoulos, Nicholaos I. 2 Lupu, Anatole 3 Astratov, Vasily N. 1,2; Email Address: astratov@uncc.edu; Affiliation: 1: Department of Physics and Optical Science, Center for Optoelectronics and Optical Communications, University of North Carolina, Charlotte, Charlotte, North Carolina 28223-0001, USA 2: Air Force Research Laboratory, Sensors Directorate, Wright Patterson AFB, Ohio 45433, USA 3: Institut d'Electronique Fondamentale, UMR 8622 CNRS, Universit0e Paris-Sud XI, 91405 Orsay, France; Source Info: 7/14/2014, Vol. 105 Issue 2, p1; Subject Term: POLYSTYRENE; Subject Term: WAVEGUIDES; Subject Term: WAVELENGTHS; Subject Term: GEOMETRICAL optics; Subject Term: THEORY of wave motion; NAICS/Industry Codes: 326140 Polystyrene Foam Product Manufacturing; Number of Pages: 4p; Illustrations: 1 Black and White Photograph, 4 Graphs; Document Type: Article L3 - 10.1063/1.4890595 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97159058&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Lei, Zhiwei AU - Huang, Yan AU - Liu, Min AU - Ge, Wen AU - Ling, Yihan AU - Peng, Ranran AU - Mao, Xiangyu AU - Chen, Xiaobing AU - Lu, Yalin T1 - Ferroelectric and ferromagnetic properties of Bi7−x La x Fe1.5Co1.5Ti3O21 ceramics prepared by the hot-press method. JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2014/07/05/ VL - 600 M3 - Letter SP - 168 EP - 171 SN - 09258388 AB - Abstract: Six-layered Aurivillius Bi7−x La x Fe1.5Co1.5Ti3O21 (BLFCT) powders and ceramics were prepared by citrate combustion and hot-press methods. X-ray diffraction indicates a successful synthesis of BLFCT ceramics. At room temperature, the largest remnant polarization (2Pr ∼4.02μC/cm2) and remnant magnetization (2Mr ∼2.58emu/g) were observed at a La concentration of x =0.75. Dielectric and zero-field cooling-field cooling (ZFC-FC) magnetization measurements confirm its ferroelectric and magnetic transitions occurring at ∼1009K and ∼505K, respectively. Positive-up-negative-down (PUND) measurement indicates an intrinsic ferroelectricity, and the leakage current does not play a big role in the BLFCT ceramics. Besides, the effect of La substitution on 2Pr and 2Mr was also discussed. [Copyright &y& Elsevier] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BISMUTH compounds KW - FERROELECTRICITY KW - FERROMAGNETIC materials KW - CERAMIC metals KW - CHEMICAL preparations industry KW - HOT pressing KW - METAL powders KW - Ceramics KW - Hot-press KW - Layer-structured KW - Multiferroics N1 - Accession Number: 95217264; Lei, Zhiwei 1 Huang, Yan 1 Liu, Min 1; Email Address: liumin1106@ustc.edu.cn Ge, Wen 1 Ling, Yihan 1 Peng, Ranran 1 Mao, Xiangyu 2 Chen, Xiaobing 2 Lu, Yalin 1,3,4; Email Address: yalin.lu@usafa.edu; Affiliation: 1: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, PR China 2: The School of Physical Science and Technology, Yangzhou University, Yangzhou 255009, PR China 3: Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, PR China 4: Laser Optics Research Center, Physics Department, United States Air Force Academy, CO 80840, USA; Source Info: Jul2014, Vol. 600, p168; Subject Term: BISMUTH compounds; Subject Term: FERROELECTRICITY; Subject Term: FERROMAGNETIC materials; Subject Term: CERAMIC metals; Subject Term: CHEMICAL preparations industry; Subject Term: HOT pressing; Subject Term: METAL powders; Author-Supplied Keyword: Ceramics; Author-Supplied Keyword: Hot-press; Author-Supplied Keyword: Layer-structured; Author-Supplied Keyword: Multiferroics; NAICS/Industry Codes: 331492 Secondary Smelting, Refining, and Alloying of Nonferrous Metal (except Copper and Aluminum); NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 325998 All Other Miscellaneous Chemical Product and Preparation Manufacturing; Number of Pages: 4p; Document Type: Letter L3 - 10.1016/j.jallcom.2014.02.122 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95217264&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Galbraith, Marshall C. AU - Benek, John A. AU - Orkwis, Paul D. AU - Turner, Mark G. T1 - A Discontinuous Galerkin Chimera scheme. JO - Computers & Fluids JF - Computers & Fluids Y1 - 2014/07/02/ VL - 98 M3 - Article SP - 27 EP - 53 SN - 00457930 AB - Highlights: [•] A Chimera method based on a Discontinuous Galerkin discretization is presented. [•] DG-Chimera does not need fringe points used in finite volume Chimera methods. [•] Grid generation is significantly simpler due to the lack of fringe points. [•] Hole cutting procedures can be performed without regard to stencils. [•] DG-Chimera is demonstrated to be consistent and verified using inviscid flow problems. [ABSTRACT FROM AUTHOR] AB - Copyright of Computers & Fluids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISCONTINUOUS functions KW - GALERKIN methods KW - SCHEME (Computer program language) KW - DISCRETIZATION methods KW - FINITE volume method KW - INVISCID flow KW - Chimera method KW - Discontinuous Galerkin N1 - Accession Number: 96243236; Galbraith, Marshall C. 1; Email Address: Marshall.Galbraith@gmail.com Benek, John A. 2 Orkwis, Paul D. 1 Turner, Mark G. 1; Affiliation: 1: University of Cincinnati, School of Aerospace Systems, Cincinnati, OH 45221, United States 2: U.S. Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson Air Force Base, OH 45433, United States; Source Info: Jul2014, Vol. 98, p27; Subject Term: DISCONTINUOUS functions; Subject Term: GALERKIN methods; Subject Term: SCHEME (Computer program language); Subject Term: DISCRETIZATION methods; Subject Term: FINITE volume method; Subject Term: INVISCID flow; Author-Supplied Keyword: Chimera method; Author-Supplied Keyword: Discontinuous Galerkin; Number of Pages: 27p; Document Type: Article L3 - 10.1016/j.compfluid.2014.03.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96243236&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beck, Joseph A. AU - Brown, Jeffrey M. AU - Cross, Charles J. AU - Slater, Joseph C. T1 - Component-Mode Reduced-Order Models for Geometric Mistuning of Integrally Bladed Rotors. JO - AIAA Journal JF - AIAA Journal Y1 - 2014/07// VL - 52 IS - 7 M3 - Article SP - 1345 EP - 1356 SN - 00011452 AB - Two methods that explicitly model airfoil geometry surface deviations for mistuning prediction in integrally bladed rotors are developed by performing a modal analysis on different degrees of freedom of a parent reduced-order model. The parent reduced-order model is formulated with Craig-Bampton component-mode synthesis in cyclic symmetry coordinates for an integrally bladed rotor with a tuned disk and airfoil geometric deviations. The first method performs an eigenanalysis on the constraint-mode degrees of freedom that provides a truncated set of interface modes, whereas the second method includes the disk fixed-interface normal mode in the eigenanalysis to yield a truncated set of ancillary modes. Both methods can use tuned or mistuned modes, where the tuned modes have the computational benefit of being computed in cyclic symmetry coordinates. Furthermore, the tuned modes only need to be calculated once, which offers significant computational savings for subsequent mistuning studies. Each geometric mistuning method relies upon the use of geometrically mistuned airfoil modes in the component-mode framework to provide a very accurate reduced-order model. Free and forced response results are compared to both the full finite-element model solutions and a traditional frequency-based approach used widely in academia and the gas-turbine industry. It is shown that the developed methods provide highly accurate results with a significant reduction in solution time compared to the full finite-element model and parent reduced-order model. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROFOILS -- Research KW - ROTORS (Autogiros) KW - RESEARCH KW - DEGREES of freedom KW - EIGENANALYSIS KW - FINITE element method N1 - Accession Number: 97141275; Beck, Joseph A. 1,2 Brown, Jeffrey M. 2,3 Cross, Charles J. 4,5 Slater, Joseph C. 5,6; Affiliation: 1: Aerospace Engineer, Aerospace Systems Directorate, 1950 5th Street, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Senior Member, AIAA 3: Senior Aerospace Engineer, Aerospace Systems Directorate, 1950 5th Street, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 4: Chief, Engine Integrity Branch, Aerospace Systems Directorate, 1950 5th Street, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 5: Associate Fellow, AIAA 6: Associate Dean of Defense and Aerospace Studies, Department of Mechanical and Materials Engineering, 3640 Colonel Glenn Highway, Wright State University, Dayton, Ohio 45435; Source Info: Jul2014, Vol. 52 Issue 7, p1345; Subject Term: AEROFOILS -- Research; Subject Term: ROTORS (Autogiros); Subject Term: RESEARCH; Subject Term: DEGREES of freedom; Subject Term: EIGENANALYSIS; Subject Term: FINITE element method; Number of Pages: 12p; Document Type: Article L3 - 10.2514/1.J052420 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97141275&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kulatilaka, Waruna AU - Gord, James AU - Roy, Sukesh T1 - Femtosecond two-photon LIF imaging of atomic species using a frequency-quadrupled Ti:sapphire laser. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2014/07// VL - 116 IS - 1 M3 - Article SP - 7 EP - 13 PB - Springer Science & Business Media B.V. SN - 09462171 AB - Femtosecond (fs)-duration laser pulses are well suited for two-photon laser-induced-fluorescence (TPLIF) imaging of key atomic species such as H, N, and O in gas-phase reacting flows. Ultrashort pulses enable efficient nonlinear excitation, while reducing interfering photochemical processes. Furthermore, amplified fs lasers enable high-repetition-rate imaging (typically 1-10 kHz) for capturing the dynamics of turbulent flow fields. However, two-dimensional (2D), single-laser-shot fs-TPLIF imaging of the above species is challenging in most practical flow fields because of the limited ultraviolet pulse energy available in commercial optical parametric amplifier (OPA)-based tunable laser sources. In this work, we report the development of an efficient, fs frequency-quadrupling unit [i.e., fourth-harmonic generator (FHG)] with overall conversion efficiency more than six times greater than that of commercial OPA-based systems. The development, characterization, and application of the fs-FHG system for 2D imaging of H atoms in flames are described in detail. The potential application of the same laser system for 2D imaging of N and O atoms is also discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FEMTOSECOND lasers KW - LASER-induced fluorescence KW - PHOTONS KW - ULTRA-short pulsed lasers KW - ELECTRONIC excitation KW - PHOTOCHEMISTRY N1 - Accession Number: 96409312; Kulatilaka, Waruna 1; Email Address: waruna.kulatilaka.1.ctr@us.af.mil Gord, James 2 Roy, Sukesh 1; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield Street, Suite 301 Dayton 45431 USA 2: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson Air Force Base 45433 USA; Source Info: Jul2014, Vol. 116 Issue 1, p7; Subject Term: FEMTOSECOND lasers; Subject Term: LASER-induced fluorescence; Subject Term: PHOTONS; Subject Term: ULTRA-short pulsed lasers; Subject Term: ELECTRONIC excitation; Subject Term: PHOTOCHEMISTRY; Number of Pages: 7p; Document Type: Article L3 - 10.1007/s00340-014-5845-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96409312&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sturrock, P.A. AU - Fischbach, E. AU - Javorsek, D. AU - Jenkins, J.H. AU - Lee, R.H. AU - Nistor, J. AU - Scargle, J.D. T1 - Comparative study of beta-decay data for eight nuclides measured at the Physikalisch-Technische Bundesanstalt. JO - Astroparticle Physics JF - Astroparticle Physics Y1 - 2014/07// VL - 59 M3 - Article SP - 47 EP - 58 SN - 09276505 AB - Abstract: We present the results of time-series analyses of data, kindly provided by the Physikalisch-Technische Bundesanstalt, concerning the beta-decays of Ag108, Ba133, Cs137, Eu152, Eu154, Kr85, Ra226, and Sr90. From measurements of the detector currents, we find evidence of annual oscillations (especially for Ra226), and for several solar r-mode oscillations. It is notable that the frequencies of these r-mode oscillations correspond to exactly the same sidereal rotation rate (12.08year−1) that we have previously identified in r-mode oscillations detected in both Mt Wilson solar diameter data and Lomonosov Moscow State University Sr90 beta-decay data. Ba133 is found to be anomalous in that current measurements for this nuclide have a much larger variation (by 4 σ) than those of the other nuclides. It is interesting that analysis of variability measurements in the PTB files yields strong evidence for an oscillation for Ba133 but only weak evidence for Ra226. [Copyright &y& Elsevier] AB - Copyright of Astroparticle Physics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BETA decay KW - NUCLIDES KW - NUCLEAR counters KW - PHYSICAL measurements KW - DIAMETER (Geometry) KW - TIME series analysis KW - Neutrinos KW - Nuclear decays KW - Sun N1 - Accession Number: 96243930; Sturrock, P.A. 1; Email Address: sturrock@stanford.edu Fischbach, E. 2 Javorsek, D. 3 Jenkins, J.H. 4 Lee, R.H. 5 Nistor, J. 2 Scargle, J.D. 6; Affiliation: 1: Center for Space Science and Astrophysics, Stanford University, Stanford, CA 94305, USA 2: Department of Physics, Purdue University, West Lafayette, IN 47907, USA 3: Edwards Air Force Base, CA 93524, USA 4: Department of Nuclear Engineering, Texas A&M University, College Station, TX 77843, USA 5: Department of Physics, United States Air Force Academy, Colorado Springs, CO 80920, USA 6: NASA/Ames Research Center, MS 245-3, Moffett Field, CA 94035, USA; Source Info: Jul2014, Vol. 59, p47; Subject Term: BETA decay; Subject Term: NUCLIDES; Subject Term: NUCLEAR counters; Subject Term: PHYSICAL measurements; Subject Term: DIAMETER (Geometry); Subject Term: TIME series analysis; Author-Supplied Keyword: Neutrinos; Author-Supplied Keyword: Nuclear decays; Author-Supplied Keyword: Sun; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.astropartphys.2014.04.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96243930&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adhikari, Upendra AU - Scheiner, Steve AU - Roy, Ajit K. AU - Kar, Tapas T1 - Do phenolic and carboxylic groups coexist at the tips of oxidized single-wall carbon nanotubes (o-SWNTs)? JO - Carbon JF - Carbon Y1 - 2014/07// VL - 73 M3 - Article SP - 194 EP - 205 SN - 00086223 AB - Abstract: Vibrational frequency analyses using density functional theory (DFT) resolves some structural features of purified oxidized single-wall carbon nanotubes (o-SWNTs). Both COOH and phenolic OH (OHph) groups, predicted in several experimental studies to be present in o-SWNTs, were considered at the tips of armchair and zigzag tubes with varying diameters. Hydrogen bonding, where carbonyl oxygen acts as proton acceptor while phenolic OH donates the proton, leads to the most stable isomers, with a H-bond energy of 9–12kcal/mol, almost double that of simpler systems. Vibrational frequencies of participating bonds are significantly red-shifted, which is not reflected in experimental spectra, and which leads to the conclusion that phenolic OH is likely not present at the tips of o-SWNTs. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SINGLE walled carbon nanotubes KW - PHENOLIC acids KW - CARBOXYLIC acids KW - OXIDIZING agents KW - VIBRATIONAL spectra KW - DENSITY functional theory N1 - Accession Number: 95388559; Adhikari, Upendra 1 Scheiner, Steve 1 Roy, Ajit K. 2 Kar, Tapas 1; Email Address: tapas.kar@usu.edu; Affiliation: 1: Department of Chemistry and Biochemistry, Utah State University, Logan, UT 84322-0300, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, United States; Source Info: Jul2014, Vol. 73, p194; Subject Term: SINGLE walled carbon nanotubes; Subject Term: PHENOLIC acids; Subject Term: CARBOXYLIC acids; Subject Term: OXIDIZING agents; Subject Term: VIBRATIONAL spectra; Subject Term: DENSITY functional theory; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.carbon.2014.02.055 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95388559&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Holcomb, Trae T1 - Constructing 2 × 2 Bricks from Unitary Numerical Semigroups. JO - Communications in Algebra JF - Communications in Algebra Y1 - 2014/07// VL - 42 IS - 7 M3 - Article SP - 2928 EP - 2938 SN - 00927872 AB - This paper investigates numerical semigroups that yield 2 × 2 bricks. We demonstrate the existence of an infinite family of 2 × 2 bricks that includes all of the perfect 2 × 2 bricks. We provide a formula for the Frobenius numbers of these semigroups as well as a necessary and sufficient condition for the semigroups to be symmetric. [ABSTRACT FROM AUTHOR] AB - Copyright of Communications in Algebra is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UNITARY groups KW - NUMERICAL analysis KW - EXISTENCE theorems KW - INFINITE groups KW - FROBENIUS algebras KW - SEMIGROUPS (Algebra) KW - SET theory KW - Dual KW - Minimal generating set KW - Monomial domain KW - Numerical semigroup KW - Relative ideal KW - Tensor product KW - Torsion KW - Unitary N1 - Accession Number: 94908835; Holcomb, Trae 1; Email Address: trae.holcomb@usafa.edu; Affiliation: 1: Department of Mathematical Sciences, United States Air Force Academy, Colorado, USA; Source Info: Jul2014, Vol. 42 Issue 7, p2928; Subject Term: UNITARY groups; Subject Term: NUMERICAL analysis; Subject Term: EXISTENCE theorems; Subject Term: INFINITE groups; Subject Term: FROBENIUS algebras; Subject Term: SEMIGROUPS (Algebra); Subject Term: SET theory; Author-Supplied Keyword: Dual; Author-Supplied Keyword: Minimal generating set; Author-Supplied Keyword: Monomial domain; Author-Supplied Keyword: Numerical semigroup; Author-Supplied Keyword: Relative ideal; Author-Supplied Keyword: Tensor product; Author-Supplied Keyword: Torsion; Author-Supplied Keyword: Unitary; Number of Pages: 11p; Document Type: Article L3 - 10.1080/00927872.2013.774408 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94908835&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bohn, Scott T1 - Russia's Afghanistan Policy: An Irresolute Strategy for an Uncertain Future. JO - Comparative Strategy JF - Comparative Strategy Y1 - 2014/07//Jul/Aug2014 VL - 33 IS - 3 M3 - Article SP - 205 EP - 221 SN - 01495933 AB - Russia's policy toward Afghanistan is at a critical juncture. This article aims to explain the evolution of Moscow's policy since 2001, and to assess its future options. The findings of this article are twofold. Moscow attempted to balance two overarching objectives: stabilize Afghanistan and maintain Russia's hegemony in Central Asia. Russian fluctuations toward Afghanistan since 2001 stemmed from changes in its perceived interests and its prioritization of these two objectives. Furthermore, Moscow is becoming increasingly concerned about Afghanistan. However, it has relatively few realistic policy options to address challenges that may develop once international military forces cease major combat operations. [ABSTRACT FROM PUBLISHER] AB - Copyright of Comparative Strategy is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEGEMONY KW - ARMED Forces KW - INTERNATIONAL relations KW - RUSSIA -- Foreign relations -- 1991- KW - AFGHANISTAN -- Foreign relations N1 - Accession Number: 97226518; Bohn, Scott 1; Affiliation: 1: United States Air Force Reserve, Washington, DC, USA; Source Info: Jul/Aug2014, Vol. 33 Issue 3, p205; Subject Term: HEGEMONY; Subject Term: ARMED Forces; Subject Term: INTERNATIONAL relations; Subject Term: RUSSIA -- Foreign relations -- 1991-; Subject Term: AFGHANISTAN -- Foreign relations; NAICS/Industry Codes: 928120 International Affairs; NAICS/Industry Codes: 911410 Foreign affairs; Number of Pages: 17p; Document Type: Article L3 - 10.1080/01495933.2014.926718 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97226518&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stewart, L.K. AU - Freidenberg, A. AU - Rodriguez-Nikl, T. AU - Oesterle, M. AU - Wolfson, J. AU - Durant, B. AU - Arnett, K. AU - Asaro, R.J. AU - Hegemier, G.A. T1 - Methodology and validation for blast and shock testing of structures using high-speed hydraulic actuators. JO - Engineering Structures JF - Engineering Structures Y1 - 2014/07// VL - 70 M3 - Article SP - 168 EP - 180 SN - 01410296 AB - Highlights: [•] Developed experimental method for blast and shock loading of structures using hydraulic actuators. [•] Described methodology for calculating simulated blast loads. [•] Validated use of technology through comparison with field experiments. [•] Demonstrated novel uses of experimental system including confined explosive scenarios and shock characterization. [ABSTRACT FROM AUTHOR] AB - Copyright of Engineering Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BLAST effect KW - HYDRAULIC engineering KW - ACTUATORS KW - FIELD work (Research) KW - SIMULATION methods & models KW - Blast KW - Hydraulics KW - Shock KW - Simulation KW - Structures N1 - Accession Number: 96026897; Stewart, L.K. 1; Email Address: lauren.stewart@ce.gatech.edu Freidenberg, A. 2 Rodriguez-Nikl, T. 3 Oesterle, M. 4 Wolfson, J. 5 Durant, B. 6 Arnett, K. 6 Asaro, R.J. 6 Hegemier, G.A. 6; Affiliation: 1: School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA 2: Civil and Environmental Engineering Department, Manhattan College, Riverdale, NY, USA 3: Civil and Environmental Engineering Department, California State University, Los Angeles, CA, USA 4: Naval Facilities Engineering and Expeditionary Warfare Center, Port Hueneme, CA, USA 5: Air Force Research Laboratory, Eglin Air Force Base, Eglin, FL, USA 6: Department of Structural Engineering, University of California, San Diego, La Jolla, CA, USA; Source Info: Jul2014, Vol. 70, p168; Subject Term: BLAST effect; Subject Term: HYDRAULIC engineering; Subject Term: ACTUATORS; Subject Term: FIELD work (Research); Subject Term: SIMULATION methods & models; Author-Supplied Keyword: Blast; Author-Supplied Keyword: Hydraulics; Author-Supplied Keyword: Shock; Author-Supplied Keyword: Simulation; Author-Supplied Keyword: Structures; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.engstruct.2014.03.027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96026897&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Drummond, J.D. AU - Carry, B. AU - Merline, W.J. AU - Dumas, C. AU - Hammel, H. AU - Erard, S. AU - Conrad, A. AU - Tamblyn, P. AU - Chapman, C.R. T1 - Dwarf planet Ceres: Ellipsoid dimensions and rotational pole from Keck and VLT adaptive optics images. JO - ICARUS JF - ICARUS Y1 - 2014/07// VL - 236 M3 - Article SP - 28 EP - 37 SN - 00191035 AB - Highlights: [•] Ceres, the second target for the DAWN mission, from adaptive optics images at Keck and the VLT over ten years is found to be an oblate spheroid with diameters of 967X967X892, with an uncertainty of 10 km in each dimension. [•] Its rotational pole is found to lie within 3 degrees of [RA Dec]=[287+64]. [•] The soft terminator (‘terminator fading’) is measurable in the high resolution images. [ABSTRACT FROM AUTHOR] AB - Copyright of ICARUS is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DWARF planets KW - VERY large telescopes KW - GRAVITATIONAL potential KW - SPHEROIDAL state KW - CERES (Dwarf planet) KW - Adaptive optics KW - Asteroid ceres KW - Asteroids N1 - Accession Number: 95987262; Drummond, J.D. 1; Email Address: jack.drummond@kirtland.af.mil Carry, B. 2 Merline, W.J. 3 Dumas, C. 4 Hammel, H. 5 Erard, S. 6 Conrad, A. 7 Tamblyn, P. 3 Chapman, C.R. 3; Affiliation: 1: Starfire Optical Range, Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117-577, USA 2: IMCCE, Observatoire de Paris, CNRS, 77 av. Denfert Rochereau, 75014 Paris, France 3: Southwest Research Institute, 1050 Walnut St. # 300, Boulder, CO 80302, USA 4: ESO, Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile 5: AURA, 1200 New York Ave. NW, Suite 350, Washington, DC 20005, USA 6: LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 place Jules Janssen, 92195 Meudon, France 7: Max-Planck-Institut fuer Astronomie, Koenigstuhl 17, D-69117 Heidelberg, Germany; Source Info: Jul2014, Vol. 236, p28; Subject Term: DWARF planets; Subject Term: VERY large telescopes; Subject Term: GRAVITATIONAL potential; Subject Term: SPHEROIDAL state; Subject Term: CERES (Dwarf planet); Author-Supplied Keyword: Adaptive optics; Author-Supplied Keyword: Asteroid ceres; Author-Supplied Keyword: Asteroids; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.icarus.2014.03.038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95987262&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Park, James AU - Johnson, Joel AU - Majurec, Ninoslav AU - Frankford, Mark AU - Stewart, Kyle AU - Smith, Graeme AU - Westbrook, Lamar T1 - Simulation and analysis of polarimetric radar signatures of human gaits. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2014/07// VL - 50 IS - 3 M3 - Article SP - 2164 EP - 2175 SN - 00189251 AB - Radar observations of human activities have a variety of applications in security, defense, and rescue operations. Range-Doppler signatures of human motions are a useful tool for retrieving information on observed activities but require an understanding of the scattering processes involved to enable interpretation. This paper presents a study of human Doppler signatures using simulations, in particular focusing on the impact of the polarization to enable an understanding of any advantages in the use of polarimetric radar. The simulation model utilized is based on an approximate scattering approach combined with a 12-cylinder description of the human body. A comparison with single polarization co-pol measurements is used to show that the model provides reasonable first-order predictions of human signatures. Further simulations for polarimetric signatures illustrate the differing contributions of individual body parts to micro-Doppler returns and suggest that multi-polarization measurements can be useful in future micro-Doppler radar systems for human observation. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR polarimetry KW - GAIT in humans KW - DOPPLER radar KW - COMPUTER simulation KW - INFORMATION retrieval KW - Computational modeling KW - Doppler effect KW - Doppler radar KW - Legged locomotion KW - Predictive models KW - Radar polarimetry N1 - Accession Number: 100028153; Park, James 1 Johnson, Joel 2 Majurec, Ninoslav 2 Frankford, Mark 2 Stewart, Kyle 2 Smith, Graeme 2 Westbrook, Lamar 1; Affiliation: 1: Air Force Research Laboratory 2: The Ohio State University, Electrical and Computer Engineering; Source Info: Jul2014, Vol. 50 Issue 3, p2164; Subject Term: RADAR polarimetry; Subject Term: GAIT in humans; Subject Term: DOPPLER radar; Subject Term: COMPUTER simulation; Subject Term: INFORMATION retrieval; Author-Supplied Keyword: Computational modeling; Author-Supplied Keyword: Doppler effect; Author-Supplied Keyword: Doppler radar; Author-Supplied Keyword: Legged locomotion; Author-Supplied Keyword: Predictive models; Author-Supplied Keyword: Radar polarimetry; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TAES.2014.120792 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100028153&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Musselman, Randall L. AU - Norgard, John D. T1 - Semi-Analytic Solution to Forward Scattering From a Long Conductive Strip. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2014/07// VL - 62 IS - 7 M3 - Article SP - 3702 EP - 3713 SN - 0018926X AB - A semi-analytic model is developed that accurately describes the scattered electromagnetic field (including both reflection and diffraction) from a long conductive strip, which is on the order of a wavelength wide. When the dimension of this conductor is on the order of a wavelength, the gross approximations used for ray-tracing models cannot be used, because the scattering object does not satisfy the assumption that it is electrically large, resulting in a vanishing wavelength. Unlike ray-tracing techniques, this model completely describes the field diffracted around and behind the conductive obstruction, creating the null that is commonly called the “shadow” from an illuminated object. The only assumption made is that the strip is relatively long, compared to its width and to the wavelength. When simulations from this analytic model are compared to simulations from an established numerical model, it is found that this analytic model provides accuracy comparable to numeric methods, without the extensive computational intensity involved in numerical solutions. Furthermore, simulated field patterns from this analytic diffraction model are compared to 2-D measured patterns, resulting in close agreement. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL diffraction KW - RESEARCH KW - ELECTROMAGNETIC wave scattering KW - HUYGENS' principle KW - THEORY of wave motion KW - ELECTROMAGNETIC fields KW - Apertures KW - Babinet's principle KW - diffraction KW - Electric fields KW - electromagnetic scattering KW - Huygen's sources KW - Magnetic resonance imaging KW - Numerical models KW - Scattering KW - Vectors KW - wave propagation N1 - Accession Number: 97010923; Musselman, Randall L. 1 Norgard, John D. 2; Affiliation: 1: US Air Force Academy in Colorado Springs, 2: University of Colorado at Colorado Springs,; Source Info: Jul2014, Vol. 62 Issue 7, p3702; Subject Term: OPTICAL diffraction; Subject Term: RESEARCH; Subject Term: ELECTROMAGNETIC wave scattering; Subject Term: HUYGENS' principle; Subject Term: THEORY of wave motion; Subject Term: ELECTROMAGNETIC fields; Author-Supplied Keyword: Apertures; Author-Supplied Keyword: Babinet's principle; Author-Supplied Keyword: diffraction; Author-Supplied Keyword: Electric fields; Author-Supplied Keyword: electromagnetic scattering; Author-Supplied Keyword: Huygen's sources; Author-Supplied Keyword: Magnetic resonance imaging; Author-Supplied Keyword: Numerical models; Author-Supplied Keyword: Scattering; Author-Supplied Keyword: Vectors; Author-Supplied Keyword: wave propagation; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TAP.2014.2317473 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97010923&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stewart, L.K. AU - Durant, B. AU - Wolfson, J. AU - Hegemier, G.A. T1 - Experimentally generated high-g shock loads using Hydraulic Blast Simulator. JO - International Journal of Impact Engineering JF - International Journal of Impact Engineering Y1 - 2014/07// VL - 69 M3 - Article SP - 86 EP - 94 SN - 0734743X AB - Abstract: Reliable and repeatable experimental generation of high-g shock environments is a long-standing problem which faces significant difficulty. The shock levels experienced by various defense-related structural and mechanical components are not always easily obtained in the true environments but are known to span a significant range of peak accelerations and pulse durations. The reproduction of these high-g shock levels in a controlled setting is highly important but also quite complicated. A system which is characterized by substantial energy output, a high level of precision, and adjustability is ideal for producing the varying and intense conditions experienced by structures and components subjected to shock loads. The Blast Simulator, a complex experimental device which simulates explosive blasts without the use of explosive materials, has proven to be an appropriate tool for this application. The system uses high-precision, computer-controlled hydraulic actuators to fire a piston mounted with various impact materials at high velocities into the specified test article. In the developed experimental series, a cylindrical steel specimen is launched by the Blast Simulator from a set of custom pedestals into a catcher pit. The response of the test article to the impact is acquired and analyzed using the shock response spectrum. The results are used to display the capabilities of the Blast Simulator to induce a wide range of shocks on the test article and display the effectiveness of the device as a shock loading tool. [Copyright &y& Elsevier] AB - Copyright of International Journal of Impact Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHOCK response KW - HYDRAULICS KW - BLAST effect KW - ACCELERATION (Mechanics) KW - ACTUATORS KW - IMPACT (Mechanics) KW - Blast Simulator KW - Experimental KW - Shock KW - SRS N1 - Accession Number: 95504357; Stewart, L.K. 1; Email Address: lauren.stewart@ce.gatech.edu Durant, B. 2 Wolfson, J. 3 Hegemier, G.A. 2; Affiliation: 1: School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA 2: Department of Structural Engineering, Univeristy of California, San Diego, La Jolla, CA, USA 3: Air Force Research Laboratory, Eglin Air Force Base, FL, USA; Source Info: Jul2014, Vol. 69, p86; Subject Term: SHOCK response; Subject Term: HYDRAULICS; Subject Term: BLAST effect; Subject Term: ACCELERATION (Mechanics); Subject Term: ACTUATORS; Subject Term: IMPACT (Mechanics); Author-Supplied Keyword: Blast Simulator; Author-Supplied Keyword: Experimental; Author-Supplied Keyword: Shock; Author-Supplied Keyword: SRS; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijimpeng.2014.02.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95504357&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanford, Bret T1 - Three-Dimensional Topologies of Compliant Flapping Mechanisms. JO - Journal of Aerospace Engineering JF - Journal of Aerospace Engineering Y1 - 2014/07//Jul/Aug2014 VL - 27 IS - 4 M3 - Article SP - 1 EP - 7 SN - 08931321 AB - This paper outlines the use of a three-dimensional topology optimization scheme for the conceptual design of compliant flapping micro air vehicle mechanisms. Each trilinear finite element within the design domain is assigned to a density variable that smoothly interpolates between 0 (void) and 1 (solid), using a well-known methodology. A mechanism topology is found that converts a series of sinusoidal actuation point loads along the lower surface into a dynamic structural deformation, which in turn provides the desired flapping kinematics. Specifically, a mechanism is desired that can independently control more than one flapping rotation (i.e., flapping and feathering) at the same time. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerospace Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICRO air vehicles KW - MATHEMATICAL optimization KW - FINITE element method KW - AXIAL loads KW - DEFORMATIONS (Mechanics) KW - Compliant mechanism KW - Flapping kinematics KW - Micro air vehicle KW - Topology optimization N1 - Accession Number: 96698449; Stanford, Bret 1; Email Address: bretkennedystanford@gmail.com; Affiliation: 1: Postdoctoral Research Associate, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433; Source Info: Jul/Aug2014, Vol. 27 Issue 4, p1; Subject Term: MICRO air vehicles; Subject Term: MATHEMATICAL optimization; Subject Term: FINITE element method; Subject Term: AXIAL loads; Subject Term: DEFORMATIONS (Mechanics); Author-Supplied Keyword: Compliant mechanism; Author-Supplied Keyword: Flapping kinematics; Author-Supplied Keyword: Micro air vehicle; Author-Supplied Keyword: Topology optimization; Number of Pages: 7p; Document Type: Article L3 - 10.1061/(ASCE)AS.1943-5525.0000347 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96698449&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harnish, D. AU - Heimbuch, B.K. AU - McDonald, M. AU - Kinney, K. AU - Dion, M. AU - Stote, R. AU - Rastogi, V. AU - Smith, L. AU - Wallace, L. AU - Lumley, A. AU - Schreuder-Gibson, H. AU - Wander, J.D. T1 - Standard method for deposition of dry, aerosolized, silica-coated Bacillus spores onto inanimate surfaces. JO - Journal of Applied Microbiology JF - Journal of Applied Microbiology Y1 - 2014/07// VL - 117 IS - 1 M3 - Article SP - 40 EP - 49 PB - Wiley-Blackwell SN - 13645072 AB - Aims To evaluate a standard aerosolization method for uniformly depositing threat-representative spores onto surfaces. Methods and Results Lyophilized Bacillus anthracis ΔSterne spores, coated in silica, were aerosolized into a containment chamber and deposited onto nine surface types by two independent laboratories. Laboratory A produced a mean loading concentration of 1·78 × 105 CFU cm−2; coefficient of variation ( CV) was <40% for 96% of samples. Laboratory B produced a mean loading concentration of 7·82 × 106 CFU cm−2; 68% of samples demonstrated CV <40%. Conclusions This method has been shown to meet the goal of loading threat-representative spores onto surfaces with low variability at concentrations relevant to the Department of Defense. Significance and Impact of the Study As demonstrated in 2001, a biological attack using anthrax disseminated as a dry powder is a credible threat. This method will provide a means to load spores onto surfaces that mimic a 'real-world' scenario of an aerosolized anthrax attack. The method has utility for evaluating sporicidal technologies and for nondecontamination studies, for example fate and transport or reaerosolization. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Microbiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROSOLS (Sprays) -- Research KW - SEDIMENTATION & deposition -- Research KW - BACILLUS (Bacteria) KW - RESEARCH KW - BACILLUS anthracis KW - BIOTECHNOLOGY KW - DATA analysis KW - METHODOLOGY KW - aerosol KW - anthrax KW - antimicrobial KW - Bacillus KW - bioaerosol KW - deposition KW - infectious agents KW - spores N1 - Accession Number: 96533779; Harnish, D. 1 Heimbuch, B.K. 1 McDonald, M. 1 Kinney, K. 1 Dion, M. 2 Stote, R. 2 Rastogi, V. 3 Smith, L. 3 Wallace, L. 3 Lumley, A. 1 Schreuder-Gibson, H. 2 Wander, J.D. 4; Affiliation: 1: Engineering Science Division, Applied Research Associates 2: U.S. Army Natick Soldier Research, Development, and Engineering Center 3: Biodefense Branch, Edgewood Chemical Biological Center 4: Air Force Research Laboratory,; Source Info: Jul2014, Vol. 117 Issue 1, p40; Subject Term: AEROSOLS (Sprays) -- Research; Subject Term: SEDIMENTATION & deposition -- Research; Subject Term: BACILLUS (Bacteria); Subject Term: RESEARCH; Subject Term: BACILLUS anthracis; Subject Term: BIOTECHNOLOGY; Subject Term: DATA analysis; Subject Term: METHODOLOGY; Author-Supplied Keyword: aerosol; Author-Supplied Keyword: anthrax; Author-Supplied Keyword: antimicrobial; Author-Supplied Keyword: Bacillus; Author-Supplied Keyword: bioaerosol; Author-Supplied Keyword: deposition; Author-Supplied Keyword: infectious agents; Author-Supplied Keyword: spores; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 10p; Illustrations: 2 Diagrams, 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1111/jam.12509 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96533779&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Billock, Vincent A. AU - Tsou, Brian H. T1 - Bridging the Divide between Sensory Integration and Binding Theory: Using a Binding-like Neural Synchronization Mechanism to Model Sensory Enhancements during Multisensory Interactions. JO - Journal of Cognitive Neuroscience JF - Journal of Cognitive Neuroscience Y1 - 2014/07// VL - 26 IS - 7 M3 - Article SP - 1587 EP - 1599 PB - MIT Press SN - 0898929X AB - Neural information combination problems are ubiquitous in cognitive neuroscience. Two important disciplines, although conceptually similar, take radically different approaches to these problems. Sensory binding theory is largely grounded in synchronization of neurons responding to different aspects of a stimulus, resulting in a coherent percept. Sensory integration focusesmore on the influences of the senses on each other and is largely grounded in the study of neurons that respond to more than one sense. It would be desirable to bridge these disciplines, so that insights gleaned from either could be harnessed by the other. To link these two fields, we used a binding-like oscillatory synchronization mechanism to simulate neurons in rattlesnake that are driven by one sense but modulated by another. Mutual excitatory coupling produces synchronized trains of action potentials with enhanced firing rates. The same neural synchronization mechanism models the behavior of a population of cells in cat visual cortex that are modulated by auditory activation. The coupling strength of the synchronizing neurons is crucial to the outcome; a criterion of strong coupling (kept weak enough to avoid seriously distorting action potential amplitude) results in intensity-dependent sensory enhancement--the principle of inverse effectiveness--a key property of sensory integration. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Cognitive Neuroscience is the property of MIT Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEUROSCIENCES KW - SYNCHRONIZATION KW - STIMULUS & response (Biology) KW - NEURONS KW - GOVERNMENT-binding theory (Linguistics) KW - SENSORIMOTOR integration KW - BRAIN -- Models N1 - Accession Number: 96276749; Billock, Vincent A. 1,2 Tsou, Brian H. 2; Affiliation: 1: Ohio State University, Columbus 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH; Source Info: Jul2014, Vol. 26 Issue 7, p1587; Subject Term: NEUROSCIENCES; Subject Term: SYNCHRONIZATION; Subject Term: STIMULUS & response (Biology); Subject Term: NEURONS; Subject Term: GOVERNMENT-binding theory (Linguistics); Subject Term: SENSORIMOTOR integration; Subject Term: BRAIN -- Models; Number of Pages: 13p; Document Type: Article L3 - 10.1162/jocn_a_00574 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96276749&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Visbal, Miguel T1 - Viscous and inviscid interactions of an oblique shock with a flexible panel. JO - Journal of Fluids & Structures JF - Journal of Fluids & Structures Y1 - 2014/07// VL - 48 M3 - Article SP - 27 EP - 45 SN - 08899746 AB - Abstract: The complex self-sustained oscillations arising from the interaction of an oblique shock with a flexible panel in both the inviscid and viscous regimes have been investigated numerically. The aeroelastic interactions are simulated using either the Euler or the full compressible Navier–Stokes equations coupled to the nonlinear von Karman plate equations. Results demonstrate that for a sufficiently strong shock limit-cycle oscillations emerge from either subcritical or supercritical bifurcations even in the absence of viscous separated flow effects. The critical dynamic pressure diminishes with increasing shock strength and can be much lower than that corresponding to standard panel flutter. Significant changes in panel dynamics were also found as a function of the shock impingement point and cavity pressure. For viscous laminar flow above the panel without a shock, high-frequency periodic oscillations appear due to the coupling of boundary-layer instabilities with high-mode flexural deflections. For a separated shock laminar boundary layer interaction, non-periodic self-excited oscillations arise which can result in a significant reduction in the extent of the time-averaged separation region. This finding suggests the potential use of an aeroelastically tailored flexible panel as a means of passive flow control. Forced panel oscillations, induced by a specified variable cavity pressure underneath the panel, were also found to be effective in reducing separation. For both inviscid and viscous interactions, the significant unsteadiness generated by the fluttering panel propagates along the complex reflected expansion/recompression wave system. [Copyright &y& Elsevier] AB - Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VISCOUS flow KW - SHOCK (Mechanics) KW - INVISCID flow KW - OSCILLATIONS KW - NUMERICAL analysis KW - VON Karman equations KW - LIMIT cycles KW - Flow control KW - Limit-cycle oscillations KW - Panel flutter KW - Shock boundary layer interactions N1 - Accession Number: 96218294; Visbal, Miguel 1; Email Address: miguel.visbal@wpafb.af.mil; Affiliation: 1: US Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7512, USA; Source Info: Jul2014, Vol. 48, p27; Subject Term: VISCOUS flow; Subject Term: SHOCK (Mechanics); Subject Term: INVISCID flow; Subject Term: OSCILLATIONS; Subject Term: NUMERICAL analysis; Subject Term: VON Karman equations; Subject Term: LIMIT cycles; Author-Supplied Keyword: Flow control; Author-Supplied Keyword: Limit-cycle oscillations; Author-Supplied Keyword: Panel flutter; Author-Supplied Keyword: Shock boundary layer interactions; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.jfluidstructs.2014.02.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96218294&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ruark, Christopher D. AU - Hack, C. Eric AU - Robinson, Peter J. AU - Mahle, Deirdre A. AU - Gearhart, Jeffery M. T1 - Predicting Passive and Active Tissue:Plasma Partition Coefficients: Interindividual and Interspecies Variability. JO - Journal of Pharmaceutical Sciences JF - Journal of Pharmaceutical Sciences Y1 - 2014/07// VL - 103 IS - 7 M3 - Article SP - 2189 EP - 2198 SN - 00223549 AB - A mechanistic tissue composition model incorporating passive and active transport for the prediction of steady-state tissue:plasma partition coefficients ( Kt:pl) of chemicals in multiple mammalian species was used to assess interindividual and interspecies variability. This approach predicts Kt:pl using chemical lipophilicity, p Ka, phospholipid membrane binding, and the unbound plasma fraction, together with tissue fractions of water, neutral lipids, neutral and acidic phospholipids, proteins, and pH. Active transport Kt:pl is predicted using Michaelis- Menten transport parameters. Species-specific biological properties were identified from 126 peer reviewed journal articles, listed in the Supporting Information, for mouse, rat, guinea pig, rabbit, beagle dog, pig, monkey, and human species. Means and coefficients of variation for biological properties were used in a Monte Carlo analysis to assess variability. The results show Kt:pl interspecies variability for the brain, fat, heart, kidney, liver, lung, muscle, red blood cell, skin, and spleen, but uncertainty in the estimates obscured some differences. Compounds undergoing active transport are shown to have concentration-dependent Kt:pl. This tissue composition-based mechanistic model can be used to predict Kt:pl for organic chemicals across eight species and 10 tissues, and can be an important component in drug development when scaling Kt:pl from animal models to humans. © 2014 Wiley Periodicals, Inc. and the American Pharmacists Association J Pharm Sci 103:2189-2198, 2014 [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Pharmaceutical Sciences is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PREDICTION models KW - BLOOD plasma KW - PARTITION coefficient (Chemistry) KW - ACTIVE biological transport KW - SPECIES diversity KW - DRUG lipophilicity KW - active transport KW - computational ADME KW - computational biology KW - drug transport KW - in silico modeling KW - Monte Carlo KW - physicochemical properties KW - population pharmacokinetic/pharmacodynamic models KW - QSPR KW - tissue partition N1 - Accession Number: 96700121; Ruark, Christopher D. 1,2 Hack, C. Eric 1 Robinson, Peter J. 1 Mahle, Deirdre A. 3 Gearhart, Jeffery M. 1,2; Affiliation: 1: HJF, Molecular Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB 2: Department of Biomedical Sciences, Wright State University 3: USAF, Molecular Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB; Source Info: Jul2014, Vol. 103 Issue 7, p2189; Subject Term: PREDICTION models; Subject Term: BLOOD plasma; Subject Term: PARTITION coefficient (Chemistry); Subject Term: ACTIVE biological transport; Subject Term: SPECIES diversity; Subject Term: DRUG lipophilicity; Author-Supplied Keyword: active transport; Author-Supplied Keyword: computational ADME; Author-Supplied Keyword: computational biology; Author-Supplied Keyword: drug transport; Author-Supplied Keyword: in silico modeling; Author-Supplied Keyword: Monte Carlo; Author-Supplied Keyword: physicochemical properties; Author-Supplied Keyword: population pharmacokinetic/pharmacodynamic models; Author-Supplied Keyword: QSPR; Author-Supplied Keyword: tissue partition; NAICS/Industry Codes: 414510 Pharmaceuticals and pharmacy supplies merchant wholesalers; Number of Pages: 10p; Document Type: Article L3 - 10.1002/jps.24011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96700121&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bateman, Aaron T1 - The Political Influence of the Russian Security Services. JO - Journal of Slavic Military Studies JF - Journal of Slavic Military Studies Y1 - 2014/07//Jul-Sep2014 VL - 27 IS - 3 M3 - Article SP - 380 EP - 403 SN - 13518046 AB - The Komitet gosudarstvennoy bezopasnosti (KGB)has been preserved under the new names of the post-Soviet security services, particularly the Federal’naia sluzhba bezopasnosti (FSB).The continuities between the Soviet and post-Soviet security institutions, coupled with the chaos following the collapse of the Soviet Union, have produced a post-Soviet Russia that has strayed away from democracy and developed into a counterintelligence state. Former Soviet security services officers are the ruling elite in modern Russia. The post-Soviet security apparatus is one of the most influential institutions in the formation of Russia’s foreign policy, and the domestic security situation in Russia directly affects its foreign policy toward the United States. The post-Soviet security apparatus has significantly influenced Russia’s departure from democracy and pursuance of a hostile foreign policy toward the United States. [ABSTRACT FROM PUBLISHER] AB - Copyright of Journal of Slavic Military Studies is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTELLIGENCE service KW - INTELLIGENCE officers KW - INFLUENCE (Psychology) KW - CONTROL (Psychology) KW - POWER (Social sciences) KW - RUSSIA KW - RUSSIA -- Foreign relations -- United States KW - SOVIET Union. Komitet gosudarstvennoi bezopasnosti KW - FEDERALNAIA sluzhba bezopasnosti Rossii N1 - Accession Number: 97130091; Bateman, Aaron 1; Affiliation: 1: United States Air Force; Source Info: Jul-Sep2014, Vol. 27 Issue 3, p380; Subject Term: INTELLIGENCE service; Subject Term: INTELLIGENCE officers; Subject Term: INFLUENCE (Psychology); Subject Term: CONTROL (Psychology); Subject Term: POWER (Social sciences); Subject Term: RUSSIA; Subject Term: RUSSIA -- Foreign relations -- United States; Company/Entity: SOVIET Union. Komitet gosudarstvennoi bezopasnosti Company/Entity: FEDERALNAIA sluzhba bezopasnosti Rossii; Number of Pages: 24p; Document Type: Article L3 - 10.1080/13518046.2014.932626 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97130091&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Jianlin AU - Tang, Jian AU - Lei, Zhiwei AU - Liu, Min AU - Knize, Randy J. AU - Lu, Yalin T1 - Pyrochlore-Free Ferroelectric 0.64 Pb( Ni1/3 Nb2/3) O3-0.36 PbTiO3 Ceramics Synthesized by the Combustion Method. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2014/07// VL - 97 IS - 7 M3 - Article SP - 2130 EP - 2134 PB - Wiley-Blackwell SN - 00027820 AB - By adopting Nb2O5, HNO3 and coordination agents EDTA as raw materials, pyrochlore-free 0.64Pb(Ni1/3Nb2/3)O3-0.36PbTiO3(0.64 PNN-0.36 PT) powders were successfully synthesized via a combustion route. Free of pyrochlore phase was realized by the chelation formation of EDTA-metal ions which isolate niobium and lead oxides and then prevent the formation of pyrochlore phases, therein generate the desired perovskite phases. Comparing the results with similar samples synthesized by the Columbite method, the new 0.64 PNN-0.36 PT ceramics here shown much better dielectric and ferroelectric performances: a maximum dielectric constant of 22 856 at 1 kHz and a remnant polarization of 21.6 μC/cm2 at 40 kV/cm. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PYROCHLORE KW - FERROELECTRICITY KW - LEAD compounds KW - CERAMIC materials KW - INORGANIC compounds -- Synthesis KW - COMBUSTION KW - COORDINATION (Chemistry) KW - ETHYLENEDIAMINETETRAACETIC acid N1 - Accession Number: 96730375; Wang, Jianlin 1 Tang, Jian 1 Lei, Zhiwei 1 Liu, Min 1 Knize, Randy J. 2 Lu, Yalin 1,2,3; Affiliation: 1: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China 2: Laser and Optics Research Center, Department of Physics, United States Air Force Academy 3: Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China; Source Info: Jul2014, Vol. 97 Issue 7, p2130; Subject Term: PYROCHLORE; Subject Term: FERROELECTRICITY; Subject Term: LEAD compounds; Subject Term: CERAMIC materials; Subject Term: INORGANIC compounds -- Synthesis; Subject Term: COMBUSTION; Subject Term: COORDINATION (Chemistry); Subject Term: ETHYLENEDIAMINETETRAACETIC acid; Number of Pages: 5p; Document Type: Article L3 - 10.1111/jace.12934 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96730375&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wadams, Robert C. AU - Yen, Chun-wan AU - Butcher, Dennis P. AU - Koerner, Hilmar AU - Durstock, Michael F. AU - Fabris, Laura AU - Tabor, Christopher E. T1 - Gold nanorod enhanced organic photovoltaics: The importance of morphology effects. JO - Organic Electronics JF - Organic Electronics Y1 - 2014/07// VL - 15 IS - 7 M3 - Article SP - 1448 EP - 1457 SN - 15661199 AB - Highlights: [•] Bulk heterojunction (BHJ) organic photovoltaics. [•] Plasmonic enhancement of device performance. [•] Characterization of Au nanorod: BHJ interactions by TEM and XRD. [•] Morphological changes cause device performance enhancement. [ABSTRACT FROM AUTHOR] AB - Copyright of Organic Electronics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GOLD nanoparticles KW - PHOTOVOLTAIC power generation KW - HETEROJUNCTIONS KW - PLASMONS (Physics) KW - X-ray diffraction KW - ORGANIC electronics KW - Bulk heterojunction KW - Nanoparticle KW - Nanorod KW - Organic photovoltaics KW - Plasmon N1 - Accession Number: 96232730; Wadams, Robert C. 1 Yen, Chun-wan 2 Butcher, Dennis P. 3 Koerner, Hilmar 3 Durstock, Michael F. 3 Fabris, Laura 4 Tabor, Christopher E. 3; Email Address: christopher.tabor@us.af.mil; Affiliation: 1: Department of Materials Science and Engineering, Rutgers University, 607 Taylor Road, Piscataway, NJ 08854, United States 2: MIT Building E25-406 77, Massachusetts Avenue, Cambridge, MA 02139, United States 3: 3005 Hobson Way, Air Force Research Laboratory, Wright Patterson, OH 45433, United States 4: Institute for Advanced Materials Devices and Nanotechnology, Department of Materials Science and Engineering, Rutgers University, 607 Taylor Road, Piscataway, NJ 08854, United States; Source Info: Jul2014, Vol. 15 Issue 7, p1448; Subject Term: GOLD nanoparticles; Subject Term: PHOTOVOLTAIC power generation; Subject Term: HETEROJUNCTIONS; Subject Term: PLASMONS (Physics); Subject Term: X-ray diffraction; Subject Term: ORGANIC electronics; Author-Supplied Keyword: Bulk heterojunction; Author-Supplied Keyword: Nanoparticle; Author-Supplied Keyword: Nanorod; Author-Supplied Keyword: Organic photovoltaics; Author-Supplied Keyword: Plasmon; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.orgel.2014.03.039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96232730&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Flores-Abad, Angel AU - Ma, Ou AU - Pham, Khanh AU - Ulrich, Steve T1 - A review of space robotics technologies for on-orbit servicing. JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences Y1 - 2014/07// VL - 68 M3 - Article SP - 1 EP - 26 SN - 03760421 AB - Abstract: Space robotics is considered one of the most promising approaches for on-orbit servicing (OOS) missions such as docking, berthing, refueling, repairing, upgrading, transporting, rescuing, and orbital debris removal. Many enabling techniques have been developed in the past two decades and several technology demonstration missions have been completed. A number of manned on-orbit servicing missions were successfully accomplished but unmanned, fully autonomous, servicing missions have not been done yet. Furthermore, all previous unmanned technology demonstration missions were designed to service cooperative targets only. Robotic servicing of a non-cooperative satellite is still an open research area facing many technical challenges. One of the greatest challenges is to ensure the servicing spacecraft safely and reliably docks with the target spacecraft or capture the target to stabilize it for subsequent servicing. This is especially important if the target has an unknown motion and kinematics/dynamics properties. Obviously, further research and development of the enabling technologies are needed. To motivate and facilitate such research and development, this paper provides a literature review of the recently developed technologies related to the kinematics, dynamics, control and verification of space robotic systems for manned and unmanned on-orbit servicing missions. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE robotics KW - SPACE vehicles -- Orbital assembly KW - SPACE flights KW - SPACE debris KW - SPACE vehicles -- Docking KW - KINEMATICS KW - On-orbit servicing KW - Space robotics KW - Spacecraft dynamics and control N1 - Accession Number: 95721903; Flores-Abad, Angel 1; Email Address: af_abad@nmsu.edu Ma, Ou 1 Pham, Khanh 2 Ulrich, Steve 3; Affiliation: 1: New Mexico State University, Mechanical and Aerospace Department, Las Cruces, NM 88003, USA 2: U.S. Air Force Research Laboratory, Kirtland Air Force Base, NM 87117-5776, USA 3: Carleton University, Spacecraft Robotics and Control Laboratory, Ottawa, Canada K1S 5B6; Source Info: Jul2014, Vol. 68, p1; Subject Term: SPACE robotics; Subject Term: SPACE vehicles -- Orbital assembly; Subject Term: SPACE flights; Subject Term: SPACE debris; Subject Term: SPACE vehicles -- Docking; Subject Term: KINEMATICS; Author-Supplied Keyword: On-orbit servicing; Author-Supplied Keyword: Space robotics; Author-Supplied Keyword: Spacecraft dynamics and control; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 26p; Document Type: Article L3 - 10.1016/j.paerosci.2014.03.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95721903&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Briggs, B.D. AU - Bishop, S.M. AU - Leedy, K.D. AU - Cady, N.C. T1 - Characterization of hafnium oxide resistive memory layers deposited on copper by atomic layer deposition. JO - Thin Solid Films JF - Thin Solid Films Y1 - 2014/07// VL - 562 M3 - Article SP - 519 EP - 524 SN - 00406090 AB - Hafnium oxide-based resistive memory devices have been fabricated on copper bottom electrodes. The HfOx active layers in these devices were deposited by atomic layer deposition (ALD) at 250°C with tetrakis(dimethylamido)hafnium(IV) as the metal precursor and an O2 plasma as the reactant. Depth profiles of the HfOx by X-ray photoelectron spectroscopy and secondary ion mass spectroscopy revealed a copper concentration on the order of five atomic percent throughout the HfOx film. In addition to the Cu doped HfOx, a thin layer (20nm) of CuxO is present at the surface. This surface layer is believed to have formed during the ALD process, and greatly complicates the analysis of the switching mechanism. The resistive memory structures fabricated from the ALD HfOx exhibited non-polar resistive switching, independent of the top metal electrode (Ni, Pt, Al, Au). Resistive switching current voltage (I–V) curves were analyzed using Schottky emission and ionic hopping models to gain insight into the physical mechanisms underpinning the device behavior. During the forming process it was determined that, at voltages in excess of 2.5V, an ionic hopping model is in good agreement with the I–V data. The extracted ion hopping distance ~4Å was within the range of interatomic spacing of HfO2 during the forming process consistent with ionic motion of Cu2+ ions. Lastly the on state I–V data was dominated at larger voltages by Schottky emission with an estimated barrier height of ~0.5eV and a refractive index of 2.59. The consequence of the Schottky emission analysis indicates the on state resistance to be a product of a Pt/Cu2O/Cu filament(s)/Cu2O/Cu structure. [ABSTRACT FROM AUTHOR] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HAFNIUM oxide KW - COMPUTER storage devices KW - COPPER electrodes KW - X-ray photoelectron spectroscopy KW - ATOMIC layer deposition KW - ELECTRIC potential KW - ALD KW - Cu KW - HfO2 KW - Resistive memory KW - TEM KW - XPS depth profile N1 - Accession Number: 96345980; Briggs, B.D. 1 Bishop, S.M. 1 Leedy, K.D. 2 Cady, N.C. 1; Email Address: ncady@albany.edu; Affiliation: 1: SUNY College of Nanoscale Science & Engineering, 255 Fuller Road, Albany, NY 12203, USA 2: Air Force Research Laboratory, 2241 Avionics Circle, Wright Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: Jul2014, Vol. 562, p519; Subject Term: HAFNIUM oxide; Subject Term: COMPUTER storage devices; Subject Term: COPPER electrodes; Subject Term: X-ray photoelectron spectroscopy; Subject Term: ATOMIC layer deposition; Subject Term: ELECTRIC potential; Author-Supplied Keyword: ALD; Author-Supplied Keyword: Cu; Author-Supplied Keyword: HfO2; Author-Supplied Keyword: Resistive memory; Author-Supplied Keyword: TEM; Author-Supplied Keyword: XPS depth profile; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 334112 Computer Storage Device Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.tsf.2014.04.084 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96345980&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Muratore, C. AU - Hu, J. J. AU - Wang, B. AU - Haque, M. A. AU - Bultman, J. E. AU - Jespersen, M. L. AU - Shamberger, P. J. AU - McConney, M. E. AU - Naguy, R. D. AU - Voevodin, A. A. T1 - Continuous ultra-thin MoS2 films grown by low-temperature physical vapor deposition. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/06/30/ VL - 104 IS - 26 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00036951 AB - Uniform growth of pristine two dimensional (2D) materials over large areas at lower temperatures without sacrifice of their unique physical properties is a critical pre-requisite for seamless integration of next-generation van der Waals heterostructures into functional devices. This Letter describes a vapor phase growth technique for precisely controlled synthesis of continuous, uniform molecular layers of MoS2 on silicon dioxide and highly oriented pyrolitic graphite substrates of over several square centimeters at 350°C. Synthesis of few-layer MoS2 in this ultra-high vacuum physical vapor deposition process yields materials with key optical and electronic properties identical to exfoliated layers. The films are composed of nano-scale domains with strong chemical binding between domain boundaries, allowing lift-off from the substrate and electronic transport measurements from contacts with separation on the order of centimeters. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICAL vapor deposition KW - SILICA KW - ELECTRON transport KW - MOLYBDENUM disilicide KW - TRANSITION metal chalcogenides KW - VAPOR phase epitaxial growth N1 - Accession Number: 96941037; Muratore, C. 1,2 Hu, J. J. 2,3 Wang, B. 4 Haque, M. A. 4 Bultman, J. E. 2,3 Jespersen, M. L. 2,3 Shamberger, P. J. 2 McConney, M. E. 2 Naguy, R. D. 2 Voevodin, A. A. 2; Affiliation: 1: Department of Chemical and Materials Engineering, University of Dayton, Dayton, Ohio 45469, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 3: University of Dayton Research Institute, Dayton, Ohio 45469, USA 4: Department of Mechanical and Nuclear Engineering, Pennsylvania State University, College Park, Pennsylvania 16802, USA; Source Info: 6/30/2014, Vol. 104 Issue 26, p1; Subject Term: PHYSICAL vapor deposition; Subject Term: SILICA; Subject Term: ELECTRON transport; Subject Term: MOLYBDENUM disilicide; Subject Term: TRANSITION metal chalcogenides; Subject Term: VAPOR phase epitaxial growth; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 5p; Illustrations: 1 Color Photograph, 4 Graphs; Document Type: Article L3 - 10.1063/1.4885391 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96941037&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nguyen, Kiet A. AU - Pachter, Ruth AU - Day, Paul N. T1 - Density functional theory based generalized effective fragment potential method. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2014/06/28/ VL - 140 IS - 24 M3 - Article SP - 244101-1 EP - 244101-10 PB - American Institute of Physics SN - 00219606 AB - We present a generalized Kohn-Sham (KS) density functional theory (DFT) based effective fragment potential (EFP2-DFT) method for the treatment of solvent effects. Similar to the original Hartree-Fock (HF) based potential with fitted parameters for water (EFP1) and the generalized HF based potential (EFP2-HF), EFP2-DFT includes electrostatic, exchange-repulsion, polarization, and dispersion potentials, which are generated for a chosen DFT functional for a given isolated molecule. The method does not have fitted parameters, except for implicit parameters within a chosen functional and the dispersion correction to the potential. The electrostatic potential is modeled with a multipolar expansion at each atomic center and bond midpoint using Stone's distributed multipolar analysis. The exchange-repulsion potential between two fragments is composed of the overlap and kinetic energy integrals and the nondiagonal KS matrices in the localized molecular orbital basis. The polarization potential is derived from the static molecular polarizability. The dispersion potential includes the intermolecular D3 dispersion correction of Grimme et al. [J. Chem. Phys. 132, 154104 (2010)]. The potential generated from the CAMB3LYP functional has mean unsigned errors (MUEs) with respect to results from coupled cluster singles, doubles, and perturbative triples with a complete basis set limit (CCSD(T)/CBS) extrapolation, of 1.7, 2.2, 2.0, and 0.5 kcal/mol, for the S22, water-benzene clusters, water clusters, and n-alkane dimers benchmark sets, respectively. The corresponding EFP2-HF errors for the respective benchmarks are 2.41, 3.1, 1.8, and 2.5 kcal/mol. Thus, the new EFP2-DFT-D3 method with the CAMB3LYP functional provides comparable or improved results at lower computational cost and, therefore, extends the range of applicability of EFP2 to larger system sizes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DENSITY functional theory KW - RESEARCH KW - HARTREE-Fock approximation KW - POLARIZATION (Electrochemistry) KW - KINETIC energy KW - WATER clusters N1 - Accession Number: 96881661; Nguyen, Kiet A. 1,2; Email Address: kiet.nguyen@wpafb.af.mil Pachter, Ruth 1; Email Address: ruth.pachter@wpafb.af.mil Day, Paul N. 1,3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 2: UES, Inc., Dayton, Ohio 45432, USA 3: General Dynamics Information Technology, Inc., Dayton, Ohio 45431, USA; Source Info: 6/28/2014, Vol. 140 Issue 24, p244101-1; Subject Term: DENSITY functional theory; Subject Term: RESEARCH; Subject Term: HARTREE-Fock approximation; Subject Term: POLARIZATION (Electrochemistry); Subject Term: KINETIC energy; Subject Term: WATER clusters; Number of Pages: 10p; Illustrations: 3 Diagrams, 6 Charts; Document Type: Article L3 - 10.1063/1.4883488 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96881661&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, J. M. AU - Factor, S. AU - Lin, Z. AU - Vitebskiy, I. AU - Ellis, F. M. AU - Kottos, T. T1 - Reconfigurable Directional Lasing Modes in Cavities with Generalized PT Symmetry. JO - Physical Review Letters JF - Physical Review Letters Y1 - 2014/06/27/ VL - 112 IS - 25 M3 - Article SP - 253902-1 EP - 253902-5 SN - 00319007 AB - We introduce a new family of generalized PT-symmetric cavities that involve gyrotropic elements and support reconfigurable unidirectional lasing modes. We derive conditions for which these modes exist and investigate a simple electronic circuit that experimentally demonstrates their feasibility in the radiofrequency domain. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review Letters is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC circuits KW - TRANSFER matrix KW - EIGENVALUES KW - PHASE transformations (Physics) KW - NEGATIVE impedance converters N1 - Accession Number: 97129126; Lee, J. M. 1 Factor, S. 1 Lin, Z. 1,2 Vitebskiy, I. 3 Ellis, F. M. 1 Kottos, T. 1; Affiliation: 1: Department of Physics, Wesleyan University, Middletown, Connecticut 06459, USA 2: School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA 3: Air Force Research Laboratory, Sensors Directorate, Wright Patterson AFB, Ohio 45433, USA; Source Info: 6/27/2014, Vol. 112 Issue 25, p253902-1; Subject Term: ELECTRONIC circuits; Subject Term: TRANSFER matrix; Subject Term: EIGENVALUES; Subject Term: PHASE transformations (Physics); Subject Term: NEGATIVE impedance converters; Number of Pages: 5p; Document Type: Article L3 - 10.1103/PhysRevLett. 112.253902 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97129126&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bomati, Erin K. AU - Haley, Joy E. AU - Noel, Joseph P. AU - Deheyn, Dimitri D. T1 - Spectral and structural comparison between bright and dim green fluorescent proteins in Amphioxus. JO - Scientific Reports JF - Scientific Reports Y1 - 2014/06/27/ M3 - Article SP - 1 EP - 9 SN - 20452322 AB - The cephalochordate Amphioxus naturally co-expresses fluorescent proteins (FPs) with different brightness, which thus offers the rare opportunity to identify FP molecular feature/s that are associated with greater/lower intensity of fluorescence. Here, we describe the spectral and structural characteristics of green FP (bfloGFPa1) with perfect (100%) quantum efficiency yielding to unprecedentedly-high brightness, and compare them to those of co-expressed bfloGFPc1 showing extremely-dim brightness due to low (0.1%) quantum efficiency. This direct comparison of structure-function relationship indicated that in the bright bfloGFPa1, a Tyrosine (Tyr159) promotes a ring flipping of a Tryptophan (Trp157) that in turn allows a cis-trans transformation of a Proline (Pro55). Consequently, the FP chromophore is pushed up, which comes with a slight tilt and increased stability. FPs are continuously engineered for improved biochemical and/or photonic properties, and this study provides new insight to the challenge of establishing a clear mechanistic understanding between chromophore structural environment and brightness level. [ABSTRACT FROM AUTHOR] AB - Copyright of Scientific Reports is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUORESCENT proteins KW - AMPHIOXUS KW - GREEN fluorescent protein KW - EMISSIVITY KW - FLUORESCENCE yield N1 - Accession Number: 97124640; Bomati, Erin K. 1 Haley, Joy E. 2 Noel, Joseph P. 3 Deheyn, Dimitri D. 1; Email Address: ddeheyn@ucsd.edu; Affiliation: 1: Marine Biology Research Division, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92037 USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433 3: Howard Hughes Medical Institute, Salk Institute for Biological Studies, Jack H. Skirball Center for Chemical Biology and Proteomics, La Jolla, CA 92037; Source Info: 6/27/2014, p1; Subject Term: FLUORESCENT proteins; Subject Term: AMPHIOXUS; Subject Term: GREEN fluorescent protein; Subject Term: EMISSIVITY; Subject Term: FLUORESCENCE yield; Number of Pages: 9p; Document Type: Article L3 - 10.1038/srep05469 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97124640&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Danhong Huang AU - Easter, Michelle AU - Gumbs, Godfrey AU - Maradudin, A. A. AU - Shawn-Yu Lin AU - Cardimona, Dave AU - Xiang Zhang T1 - Resonant scattering of surface plasmon polaritons by dressed quantum dots. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/06/23/ VL - 104 IS - 25 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00036951 AB - The resonant scattering of surface plasmon-polariton waves (SPP) by embedded semiconductor quantum dots above the dielectric/metal interface is explored in the strong-coupling regime. In contrast to non-resonant scattering by a localized dielectric surface defect, a strong resonant peak in the spectrum of the scattered field is predicted that is accompanied by two side valleys. The peak height depends nonlinearly on the amplitude of SPP waves, reflecting the feedback dynamics from a photon-dressed electron-hole plasma inside the quantum dots. This unique behavior in the scattered field peak strength is correlated with the occurrence of a resonant dip in the absorption spectrum of SPP waves due to the interband photon-dressing effect. Our result on the scattering of SPP waves may be experimentally observable and applied to spatially selective illumination and imaging of individual molecules. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE plasmon resonance KW - POLARITONS KW - SEMICONDUCTOR quantum dots KW - ABSORPTION spectra KW - SOLID-state plasmas KW - DIELECTRICS N1 - Accession Number: 96853811; Danhong Huang 1 Easter, Michelle 2 Gumbs, Godfrey 3 Maradudin, A. A. 4 Shawn-Yu Lin 5 Cardimona, Dave 1 Xiang Zhang 6; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA 2: Department of Mechanical Engineering, Stevens Institute of Technology, 1 Castle Point Terrace, Hoboken, New Jersey 07030, USA 3: Department of Physics and Astronomy, Hunter College of the City University of New York, 695 Park Avenue, New York, New York 10065, USA 4: Department of Physics and Astronomy, University of California, Irvine, California 92697, USA 5: Department of Electrical, Computer and Systems Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180, USA 6: Department of Mechanical Engineering, 3112 Etcheverry Hall, University of California, Berkeley, Berkeley, California 94720, USA; Source Info: 6/23/2014, Vol. 104 Issue 25, p1; Subject Term: SURFACE plasmon resonance; Subject Term: POLARITONS; Subject Term: SEMICONDUCTOR quantum dots; Subject Term: ABSORPTION spectra; Subject Term: SOLID-state plasmas; Subject Term: DIELECTRICS; Number of Pages: 5p; Illustrations: 1 Color Photograph, 1 Chart, 1 Graph; Document Type: Article L3 - 10.1063/1.4883859 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96853811&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dyakonov, G.S. AU - Mironov, S. AU - Zherebtsov, S.V. AU - Malysheva, S.P. AU - Salishchev, G.A. AU - Salem, A.A. AU - Semiatin, S.L. T1 - Grain-structure development in heavily cold-rolled alpha-titanium. JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2014/06/23/ VL - 607 M3 - Article SP - 145 EP - 154 SN - 09215093 AB - Abstract: High-resolution electron back-scatter diffraction (EBSD) analysis was employed to establish mircostructure evolution in heavily cold-rolled alpha-titanium. After thickness reductions of 75% to 96%, significant microstructure and texture changes were documented. The surface area of high-angle grain boundaries was almost tripled, thus giving rise to an ultra-fine microstructure with a mean grain size of 0.6μm. Moreover, orientation spread around typical ‘split-basal’ rolling texture substantially increased. These effects were suggested to be related to the enhancement of pyramidal 〈c+a〉 slip. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL structure KW - CRYSTAL grain boundaries KW - COLD rolling (Metalwork) KW - TITANIUM KW - METALS -- Microstructure KW - ELECTRONS -- Backscattering KW - CRYSTAL texture KW - Bulk deformation KW - EBSD KW - Grain refinement KW - Nanostructured materials KW - Titanium alloys N1 - Accession Number: 96187934; Dyakonov, G.S. 1 Mironov, S. 2; Email Address: smironov@material.tohoku.ac.jp Zherebtsov, S.V. 3 Malysheva, S.P. 4 Salishchev, G.A. 3 Salem, A.A. 5,6 Semiatin, S.L. 6; Affiliation: 1: Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, 12 K. Marx Street, 450000 Ufa, Russia 2: Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Sendai 980-8579, Japan 3: Laboratory of Bulk Nanostructured Materials, Belgorod State University, Pobeda 85, Belgorod 308015, Russia 4: Institute for Metals Superplasticity Problems, Russian Academy of Science, 39 Khalturin Str., Ufa 450001, Russia 5: Materials Resources LLC, Dayton, OH 45402, USA 6: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Jun2014, Vol. 607, p145; Subject Term: CRYSTAL structure; Subject Term: CRYSTAL grain boundaries; Subject Term: COLD rolling (Metalwork); Subject Term: TITANIUM; Subject Term: METALS -- Microstructure; Subject Term: ELECTRONS -- Backscattering; Subject Term: CRYSTAL texture; Author-Supplied Keyword: Bulk deformation; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: Grain refinement; Author-Supplied Keyword: Nanostructured materials; Author-Supplied Keyword: Titanium alloys; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331315 Aluminum Sheet, Plate, and Foil Manufacturing; NAICS/Industry Codes: 331221 Rolled Steel Shape Manufacturing; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.msea.2014.03.141 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96187934&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gumbs, Godfrey AU - Iurov, Andrii AU - Danhong Huang AU - Zhemchuzhna, Liubov T1 - Revealing Hofstadter spectrum for graphene in a periodic potential. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2014/06/22/ VL - 89 IS - 24 M3 - Article SP - 1 EP - 1 SN - 10980121 AB - We calculate the energy bands for graphene monolayers when electrons move through a periodic electrostatic potential in the presence of a uniform perpendicular magnetic field. We clearly demonstrate the quantum fractal nature of the energy bands at reasonably low magnetic fields. We present results for the energy bands as functions of both wave number and magnetic flux through the unit cells of the resulting moiré superlattice. The effects due to pseudospin coupling and Landau orbit mixing by a strong scattering potential have been exhibited. At low magnetic fields when the Landau orbits are much larger than the period of the modulation, the Landau levels are only slightly broadened. This feature is also observed at extremely high magnetic fields. The density of states has been calculated and shows a remarkable self-similarity like the energy bands. We estimate that for modulation period of 10 nm the region where the Hofstadter butterfly is revealed is B≤2 T. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRUM analysis KW - GRAPHENE KW - MONOMOLECULAR films KW - ENERGY bands KW - ELECTRIC potential KW - MAGNETIC fields N1 - Accession Number: 109168209; Gumbs, Godfrey 1,2 Iurov, Andrii 1; Email Address: theorist.physics@gmail.com Danhong Huang 3 Zhemchuzhna, Liubov 4; Affiliation: 1: Department of Physics and Astronomy, Hunter College, City University of New York, 695 Park Avenue, New York, New York 10065, USA 2: Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 San Sebastian, Basque Country, Spain 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA 4: Department of Math & Physics, North Carolina Central University, Durham, North Carolina 27707, USA; Source Info: Jun2014, Vol. 89 Issue 24, p1; Subject Term: SPECTRUM analysis; Subject Term: GRAPHENE; Subject Term: MONOMOLECULAR films; Subject Term: ENERGY bands; Subject Term: ELECTRIC potential; Subject Term: MAGNETIC fields; Number of Pages: 1p; Document Type: Article L3 - 10.1103/PhysRevB.89.241407 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109168209&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ullrich, B. AU - Xi, H. AU - Wang, J. S. T1 - Photoinduced band filling in strongly confined colloidal PbS quantum dots. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2014/06/21/ VL - 115 IS - 23 M3 - Article SP - 233503-1 EP - 233503-4 PB - American Institute of Physics SN - 00218979 AB - Increase in continuous wave laser excitation (6W/cm2 to 120 W/cm2) of colloidal PbS quantum dots in the strongly quantized regime (diameters 2.0 nm and 4.7 nm) deposited on semi-insulating GaAs and glass causes a clear blue shift (0.019 eV and 0.080 eV) of the emission spectra. Proof of the applicability of a dynamic three-dimensional band filling model is the significance of the presented results and demonstrates the effective electronic coupling in quantum dot arrays similar to superlattices. The work also reveals the influence of quantum dot sizes on photo-doping effects. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM mechanics KW - QUANTUM dots KW - SEMICONDUCTOR doping KW - COLLOIDS KW - PHOTOINDUCED electron transfer N1 - Accession Number: 96727060; Ullrich, B. 1,2; Email Address: bruno@fis.unam.mx Xi, H. 3 Wang, J. S. 4; Affiliation: 1: Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca, Morelos 62210, Mexico 2: Ullrich Photonics LLC, Wayne, Ohio 43466, USA 3: Department of Physics and Astronomy, Bowling Green State University, Bowling Green, Ohio 43403-0209, USA 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, Ohio 45433-7707, USA; Source Info: 2014, Vol. 115 Issue 23, p233503-1; Subject Term: QUANTUM mechanics; Subject Term: QUANTUM dots; Subject Term: SEMICONDUCTOR doping; Subject Term: COLLOIDS; Subject Term: PHOTOINDUCED electron transfer; Number of Pages: 4p; Illustrations: 1 Black and White Photograph, 5 Graphs; Document Type: Article L3 - 10.1063/1.4883761 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96727060&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Look, David C. AU - Leedy, Kevin D. AU - Agresta, Donald L. T1 - Nondestructive quantitative mapping of impurities and point defects in thin films: Ga and VZn in ZnO:Ga. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/06/16/ VL - 104 IS - 24 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00036951 AB - Ga-doped ZnO (GZO) films grown by pulsed-laser deposition on quartz and other lattice-mismatched substrates can routinely attain resistivities of 2×10-4 ·cm and thus compete with Sn-doped In2O3 (ITO) in large-area transparent-electrode applications. Nondestructive, high-resolution (1-mm) maps of thickness d, concentration n, and mobility µ on such films can be obtained automatically from commercial spectroscopic ellipsometers. From n and µ, degenerate-electron scattering theory yields donor ND and acceptor NA concentrations at each point. Finally, ND and NA can be identified as [Ga] and [VZn], respectively, demonstrating high-density mapping of impurities and point defects in a semiconductor thin film. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM (Metal) KW - DOPED semiconductors KW - ZINC oxide KW - VANADIUM compounds KW - PULSED laser deposition KW - QUARTZ KW - SEMICONDUCTOR thin films N1 - Accession Number: 96713761; Look, David C. 1,2,3; Email Address: david.look@wright.edu Leedy, Kevin D. 3 Agresta, Donald L. 3; Affiliation: 1: Semiconductor Research Center, Wright State University, 3640 Colonel Glenn Hwy., Dayton, Ohio 45435, USA 2: Wyle, 2601 Mission Point Blvd., Dayton, Ohio 45431, USA 3: Air Force Research Laboratory Sensors Directorate, 2241 Avionics Circle, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 6/16/2014, Vol. 104 Issue 24, p1; Subject Term: GALLIUM (Metal); Subject Term: DOPED semiconductors; Subject Term: ZINC oxide; Subject Term: VANADIUM compounds; Subject Term: PULSED laser deposition; Subject Term: QUARTZ; Subject Term: SEMICONDUCTOR thin films; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 4p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1063/1.4884347 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96713761&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Janeczko, Allen K. AU - Walters, Edward B. AU - Schuldt, Steven J. AU - Magnuson, Matthew L. AU - Willison, Stuart A. AU - Brown, Lisa M. AU - Ruiz, Oscar N. AU - Felker, Daniel L. AU - Racz, LeeAnn T1 - Fate of malathion and a phosphonic acid in activated sludge with varying solids retention times. JO - Water Research JF - Water Research Y1 - 2014/06/15/ VL - 57 M3 - Article SP - 127 EP - 139 SN - 00431354 AB - Abstract: This study examined the ability of activated sludge (AS) to sorb and biodegrade ethylmethylphosphonic acid (EMPA) and malathion, a degradation product and surrogate, respectively, for an organophosphate chemical warfare agent. Sorption equilibrium isotherm experiments indicate that sorption of EMPA and malathion to AS is negligible. EMPA at a concentration of 1 mg L−1 degraded by approximately 30% with apparent first-order kinetics, possibly via co-metabolism from nitrification. Heterotrophic bacteria and abiotic mechanisms, however, are largely responsible for malathion degradation also with apparent first-order kinetics. EMPA did not inhibit chemical oxygen demand (COD) oxidation or nitrification activity, although malathion did appear to induce a stress response resulting in inhibition of COD oxidation. The study also included a 30-day experiment in which malathion, at a concentration of 5 mg L−1, was repeatedly fed to AS in bench-scale sequencing batch reactors (SBRs) operating at different solids retention times (SRTs). Peak malathion concentrations occurred at day 4.5, with the longer SRTs yielding greater peak malathion concentrations. The AS reduced the malathion concentrations to nearly zero by day 10 for all SRTs, even when the malathion concentration in the influent increased to 20.8 mg L−1. The data suggest a biodegradation pathway for malathion involving an oxygenase. Phylogenetic analyses revealed that all samples had an abundance of Zoogloea, though there was greater bacterial diversity in the SBR with the SRT of 50 days. The SBR with an SRT of 9.5 days had an apparent reduction in the diversity of the bacterial community. [Copyright &y& Elsevier] AB - Copyright of Water Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MALATHION KW - PHOSPHONIC acids KW - ACTIVATED sludge process (Sewage purification) KW - RF values (Chromatography) KW - SEWAGE sludge -- Biodegradation KW - CHEMICAL oxygen demand KW - Activated sludge KW - Ethylmethylphosphonic acid KW - Malathion KW - Organophosphate KW - Solids retention time N1 - Accession Number: 96186601; Janeczko, Allen K. 1; Email Address: allen.janeczko.1@us.af.mil Walters, Edward B. 1; Email Address: edward.walters@us.af.mil Schuldt, Steven J. 1; Email Address: steven.schuldt@us.af.mil Magnuson, Matthew L. 2; Email Address: magnuson.matthew@epa.gov Willison, Stuart A. 2; Email Address: willison.stuart@epa.gov Brown, Lisa M. 3; Email Address: lisa.brown@udri.udayton.edu Ruiz, Oscar N. 4; Email Address: oscar.ruiz@us.af.mil Felker, Daniel L. 1; Email Address: daniel.felker@us.af.mil Racz, LeeAnn 1; Email Address: leeann.racz@us.af.mil; Affiliation: 1: Air Force Institute of Technology, Department of Systems Engineering and Management, 2950 Hobson Way, Wright-Patterson AFB, OH 45433, USA 2: US Environmental Protection Agency, National Homeland Security Research Center, 26 W. Martin Luther King Drive, Mailstop NG-16, Cincinnati, OH 45268, USA 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA 4: Air Force Research Laboratory, Aerospace Systems Directorate, Fuels and Energy Branch, Wright-Patterson AFB, OH 45433, USA; Source Info: Jun2014, Vol. 57, p127; Subject Term: MALATHION; Subject Term: PHOSPHONIC acids; Subject Term: ACTIVATED sludge process (Sewage purification); Subject Term: RF values (Chromatography); Subject Term: SEWAGE sludge -- Biodegradation; Subject Term: CHEMICAL oxygen demand; Author-Supplied Keyword: Activated sludge; Author-Supplied Keyword: Ethylmethylphosphonic acid; Author-Supplied Keyword: Malathion; Author-Supplied Keyword: Organophosphate; Author-Supplied Keyword: Solids retention time; NAICS/Industry Codes: 325320 Pesticide and Other Agricultural Chemical Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.watres.2014.03.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96186601&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Wiens, Justin P. AU - Miller, Thomas M. AU - Viggiano, Albert A. T1 - Kinetics of ion-ion mutual neutralization: Halide anions with polyatomic cations. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2014/06/14/ VL - 140 IS - 22 M3 - Article SP - 224309-1 EP - 224309-8 PB - American Institute of Physics SN - 00219606 AB - The binary mutual neutralization (MN) of a series of 17 cations ( O2+, NO+, NO2+, CO+, CO2+, Cl+, Cl2+, SO2+, CF3+, C2F5+, NH3+, H3+, D3+, H2O+, H3O+, ArH+, ArD+) with 3 halide anions (Cl-, Br-, I-) has been investigated in a flowing afterglow-Langmuir probe apparatus using the variable electron and neutral density attachment mass spectrometry technique. The MN rate constants of atom-atom reactions are dominated by the chemical nature of the system (i.e., the specific locations of curve crossings). As the number of atoms in the system increases, the MN rate constants become dominated instead by the physical nature of the system (e.g., the relative velocity of the reactants). For systems involving 4 or more atoms, the 300 K MN rate constants are well described by 2.7 × 10-7 μ-0.5, where the reduced mass is in Da and the resulting rate constants in cm³ s-1. An upper limit to the MN rate constants appears well described by the complex potential model described by Hickman assuming a cross-section to neutralization of 11 000 Ų at 300 K, equivalent to 3.5 × 10-7 μ-0.5. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METHACRYLONITRILE KW - PHYSICAL & theoretical chemistry KW - PARTICLES (Nuclear physics) KW - SPECTRUM analysis KW - MASS (Physics) KW - CHEMICAL processes KW - CATIONS N1 - Accession Number: 96559554; Shuman, Nicholas S. 1 Wiens, Justin P. 1 Miller, Thomas M. 1 Viggiano, Albert A. 1; Email Address: rvborgmailbox@kirtland.af.mil; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, New Mexico 87117, USA; Source Info: 6/14/2014, Vol. 140 Issue 22, p224309-1; Subject Term: METHACRYLONITRILE; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: PARTICLES (Nuclear physics); Subject Term: SPECTRUM analysis; Subject Term: MASS (Physics); Subject Term: CHEMICAL processes; Subject Term: CATIONS; Number of Pages: 8p; Illustrations: 2 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.4879780 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96559554&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Folkner, D. AU - Katz, A. AU - Sankaran, V. T1 - Design and verification methodology of boundary conditions for finite volume schemes. JO - Computers & Fluids JF - Computers & Fluids Y1 - 2014/06/13/ VL - 96 M3 - Article SP - 264 EP - 275 SN - 00457930 AB - Highlights: [•] We propose a unifying framework for boundary condition implementation. [•] We provide a new verification technique for general boundary conditions. [•] Our verification method detects ill-posed or unstable boundary conditions. [•] Physical insight is necessary to devise consistent boundary conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Computers & Fluids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BOUNDARY value problems KW - FINITE volume method KW - UNSTEADY flow (Fluid dynamics) KW - FLUID dynamics KW - METHODOLOGY KW - Boundary conditions KW - Finite volume KW - Lagrange multipliers KW - Manufactured solutions KW - Verification N1 - Accession Number: 95825889; Folkner, D. 1; Email Address: David.Folkner@gmail.com Katz, A. 1; Email Address: aaron.katz@usu.edu Sankaran, V. 2; Email Address: venkateswaran.sankaran@edwards.af.mil; Affiliation: 1: Department of Mechanical and Aerospace Engineering, Utah State University, Logan, UT 84322, USA 2: Rocket Propulsion Division Air Force Research Laboratory (ARFL), Edwards AFB, CA 93524, USA; Source Info: Jun2014, Vol. 96, p264; Subject Term: BOUNDARY value problems; Subject Term: FINITE volume method; Subject Term: UNSTEADY flow (Fluid dynamics); Subject Term: FLUID dynamics; Subject Term: METHODOLOGY; Author-Supplied Keyword: Boundary conditions; Author-Supplied Keyword: Finite volume; Author-Supplied Keyword: Lagrange multipliers; Author-Supplied Keyword: Manufactured solutions; Author-Supplied Keyword: Verification; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.compfluid.2014.03.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95825889&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mee, J K AU - Raghunathan, R AU - Wright, J B AU - Lester, L F T1 - Device geometry considerations for ridge waveguide quantum dot mode-locked lasers. JO - Journal of Physics: D Applied Physics JF - Journal of Physics: D Applied Physics Y1 - 2014/06/11/ VL - 47 IS - 23 M3 - Article SP - 1 EP - 1 SN - 00223727 AB - Quantum dot mode-locked lasers have emerged as a leading source for the efficient generation of high-quality optical pulses from a compact package, attracting considerable attention for support of multiple high-speed applications, owing to characteristics such as low noise operation and high pulse peak power, in addition to the ability to multiplex the output pulse train in temporal and frequency domains in order to obtain hundreds of GHz pulse repetition rates potentially operating at 1 Tbps. This topical review provides a detailed explanation into the primary advantages of quantum dots, identifying the key features that have made them superior to other material systems for passive mode-locking in semiconductor lasers. Following this account, the impact of the device's cavity geometry on the operational range of two-section, monolithic passively mode-locked lasers is investigated both experimentally and analytically. A model is described that predicts regimes of pulsed operation as a function of absorber length to gain length ratio. Experimental measurements of the pulse time-domain characteristics over a wide range of operating temperatures are found to be in excellent agreement with analytical predictions. The impact of ridge waveguide design on the operational range is also examined and the key dimensions that most strongly impact efficient operation are identified. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: D Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR lasers KW - RIDGE waveguides KW - QUANTUM dot devices KW - MODE-locked lasers KW - TEMPORAL distribution (Quantum optics) KW - HIGH speed optics N1 - Accession Number: 96380439; Mee, J K 1 Raghunathan, R 2 Wright, J B 3 Lester, L F 2; Affiliation: 1: Air Force Research Laboratory-Space Electronics Branch, Kirtland AFB, NM 87117, USA 2: Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA 3: Sandia National Laboratories, Albuquerque, NM 87123, USA; Source Info: 6/11/2014, Vol. 47 Issue 23, p1; Subject Term: SEMICONDUCTOR lasers; Subject Term: RIDGE waveguides; Subject Term: QUANTUM dot devices; Subject Term: MODE-locked lasers; Subject Term: TEMPORAL distribution (Quantum optics); Subject Term: HIGH speed optics; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0022-3727/47/23/233001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96380439&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pandey, Srikrishna AU - Maiti, Uday N. AU - Palanisamy, Kowsalya AU - Nikolaev, Pavel AU - Arepalli, Sivaram T1 - Ultrasonicated double wall carbon nanotubes for enhanced electric double layer capacitance. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/06/09/ VL - 104 IS - 23 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00036951 AB - An intense ultrasonication of the double wall carbon nanotubes (DWCNTs) causes fractures and splitting of the individual tubes. This not only generates open tips and edges in DWCNTs but also incorporates defects in the tube walls. The electric double layer capacitor (EDLC) electrodes of intensively ultrasonicated DWCNTs (U-DWCNTs) form organized layered-porous structures. The EDLC behavior of U-DWCNTs electrodes shows dramatic improvements (specific capacitance 10 times and 222 times larger than the pristine DWCNTs at scan rates 5 mV s-1 and 500 mV s-1, respectively) due to the increased wettability of electrodes and accessibility of the electrolyte ions. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DOUBLE walled carbon nanotubes KW - RESEARCH KW - ELECTRIC double layer KW - ELECTRIC capacity -- Measurement KW - POROUS materials KW - ELECTRODES N1 - Accession Number: 96560136; Pandey, Srikrishna 1; Email Address: srikrishnapandey@gmail.com Maiti, Uday N. 1 Palanisamy, Kowsalya 2 Nikolaev, Pavel 3 Arepalli, Sivaram 4; Email Address: sivaram.arepalli@gmail.com; Affiliation: 1: Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS) and Department of Materials Science & Engineering, Korea Advanced Institute of Science & Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeoon, South Korea 2: Department of Energy Science, Sungkyunkwan University, Suwon 440746, South Korea 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB and UES, Inc., Ohio 45433, USA 4: National Institute of Aerospace, 100 Exploration Way, Hampton, Virginia 23666, USA; Source Info: 6/9/2014, Vol. 104 Issue 23, p1; Subject Term: DOUBLE walled carbon nanotubes; Subject Term: RESEARCH; Subject Term: ELECTRIC double layer; Subject Term: ELECTRIC capacity -- Measurement; Subject Term: POROUS materials; Subject Term: ELECTRODES; Number of Pages: 4p; Illustrations: 1 Black and White Photograph, 3 Graphs; Document Type: Article L3 - 10.1063/1.4882278 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96560136&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Borg, John P. AU - Maines, Warren R. AU - Chhabildas, Lalit C. T1 - Equation of state and isentropic release of aluminum foam and polyvinylidene fluoride systems. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2014/06/07/ VL - 115 IS - 21 M3 - Article SP - 213515-1 EP - 213515-13 PB - American Institute of Physics SN - 00218979 AB - There is considerable interest in developing a better understanding of the dynamic behavior of multicomponent heterogeneous systems. This study investigates and compares the dynamic response of 21% dense aluminum foam, filled with polyvinylidene fluoride (PVDF or Kynar). Experiments were conduced in a 60mm bore gun in a one-dimensional reverse plate impact configuration at velocities ranging from 350 m/s to 2200 m/s. The particle velocity of the backside of a thin anvil, also referred to as a witness plate, was monitored with a velocity interferometer. The resulting shock Hugoniot and isentropic release states are inferred from the particle velocity records using an impedance matching technique. The experiments indicate that the heterogeneous system achieves a wide distribution of states even though it was loaded in a one-dimensional plane-strain configuration. The system maintains its strength up to shock levels near 5 GPa, above which the PVDF appears to melt upon release. Simulations were conducted using an Eulerian hydrocode where the foam filled structures are computationally resolved, i.e., mesoscale simulations. The mesoscale simulations were used to resolve not only the average response but also characterize a wide range of stress and temperature distributions during both loading and release. These simulations are in good agreement with the available experimental data and give insight into the dynamic response not accessible via experimental measurements. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EQUATIONS of state KW - ISENTROPIC processes KW - ALUMINUM foam KW - POLYVINYLIDENE fluoride KW - INHOMOGENEOUS materials KW - EXPERIMENTS N1 - Accession Number: 96410246; Borg, John P. 1; Email Address: ohn.borg@mu.edu Maines, Warren R. 2 Chhabildas, Lalit C. 2; Affiliation: 1: Marquette University, 1515 W. Wisconsin, Milwaukee, Wisconsin, 53233, USA 2: Air Force Research Laboratory, Damage Mechanisms Branch, Eglin AFB, Florida 32542, USA; Source Info: 2014, Vol. 115 Issue 21, p213515-1; Subject Term: EQUATIONS of state; Subject Term: ISENTROPIC processes; Subject Term: ALUMINUM foam; Subject Term: POLYVINYLIDENE fluoride; Subject Term: INHOMOGENEOUS materials; Subject Term: EXPERIMENTS; Number of Pages: 13p; Illustrations: 2 Diagrams, 2 Charts, 15 Graphs; Document Type: Article L3 - 10.1063/1.4878695 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96410246&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ziółkowski, Marcin AU - Schatz, George C. AU - Viggiano, A. A. AU - Midey, Anthony AU - Itzhak Dotan T1 - O2(X³g-g) and O2(a¹Δg) charge exchange with simple ions. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2014/06/07/ VL - 140 IS - 21 M3 - Article SP - 214307-1 EP - 214307-12 PB - American Institute of Physics SN - 00219606 AB - We present theory and experiments which describe charge transfer from the X³Σg- and a¹Δg states of molecular oxygen and atomic and molecular cations. Included in this work are new experimental results for O2(a¹Δg) and the cations O+, CO+, Ar+, and N+ 2 , and new theory based on complete active space self-consistent field method calculations and an extended Langevin model to calculate rate constants for ground and excited O2 reacting with the atomic ions Ar+, Kr+, Xe+, Cl+, and Br+. The T-shaped orientation of the (X - O2)+ potential surface is used for the calculations, including all the low lying states up to the second singlet state of the oxygen molecule b¹Σg+. The calculated rate constants for both O2(X³ Σg-) and O2(a¹Δg) show consistent trends with the experimental results, with a significant dependence of rate constant on charge transfer exothermicity that does not depend strongly on the nature of the cation. The comparisons with theory show that partners with exothermicities of about 1 eV have stronger interactions with O2, leading to larger Langevin radii, and also that more of the electronic states are attractive rather than repulsive, leading to larger rate constants. Rate constants for charge transfer involving O2(a¹Δg) are similar to those for O2(X³ Σg-) for a given exothermicity ignoring the electronic excitation of the O2(a¹Δg) state. This means (and the electronic structure calculations support) that the ground and excited states of O2 have about the same attractive interactions with ions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONS KW - RESEARCH KW - CHARGE transfer KW - ELECTRON donor-acceptor complexes KW - LANGEVIN radiation pressure KW - WATER pollution N1 - Accession Number: 96391527; Ziółkowski, Marcin 1,2 Schatz, George C. 1; Email Address: schatz@chem.northwestern.edu Viggiano, A. A. 3 Midey, Anthony 3,4 Itzhak Dotan 3,5; Affiliation: 1: Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, USA 2: Center of Excellence in Next Generation Computing, Clemson University, 2099 Barre Hall, Clemson, South Carolina 29634, USA 3: Air Force Research Laboratory, Space Vehicles Directorate, 3500 Aberdeen Ave, Kirtland AFB, New Mexico 87117, USA 4: Excellims Corp., 20 Main St., Acton, Massachusetts 01720, USA 5: Open University of Israel, 108 Ravutski St., Raanana 43107, Israel; Source Info: 6/7/2014, Vol. 140 Issue 21, p214307-1; Subject Term: IONS; Subject Term: RESEARCH; Subject Term: CHARGE transfer; Subject Term: ELECTRON donor-acceptor complexes; Subject Term: LANGEVIN radiation pressure; Subject Term: WATER pollution; Number of Pages: 12p; Illustrations: 1 Diagram, 2 Charts, 8 Graphs; Document Type: Article L3 - 10.1063/1.4879805 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96391527&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - De Sio, Luciano AU - Tabiryan, Nelson AU - Bunning, Timothy T1 - Spontaneous radial liquid crystals alignment on curved polymeric surfaces. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/06/02/ VL - 104 IS - 22 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00036951 AB - We report on the fabrication and characterization of curved periodic microstructures formed through the controlled phase separation of a liquid crystal and a polymerizing matrix comprising self-aligned liquid crystal. Imaging through a "Fresnel like" structure imparts an intensity profile onto a photosensitive mixture which subsequently forms periodic alternating curved polymeric and liquid crystal slices. The phase separated concentric rings of nematic liquid crystal self-align in a radial alignment in between the polymer walls as indicated by polarizing optical microscopy analysis (Maltese cross). Electro-optical experiments confirm the possibility to control this alignment and the optical properties of the macroscopic structure by means of a quite low external voltage. The system exhibits high-quality and self-alignment of an ordered (liquid crystal) fluid without the need of surface chemistry or functionalization. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - POLYMERS KW - MICROFABRICATION KW - MICROSTRUCTURE KW - PHASE separation KW - POLYMERIZATION KW - MICROSCOPY KW - SURFACE chemistry N1 - Accession Number: 96394077; De Sio, Luciano 1,2; Email Address: luciano.desio@fis.unical.it Tabiryan, Nelson 1 Bunning, Timothy 3; Affiliation: 1: Beam Engineering for Advanced Measurements Company, Winter Park, Florida 32789, USA 2: Department of Physics and Centre of Excellence for Study of Innovative Functional Materials CEMIF-CAL, University of Calabria, 87036 Arcavacata di Rende, Italy 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7707, USA; Source Info: 6/2/2014, Vol. 104 Issue 22, p1; Subject Term: LIQUID crystals; Subject Term: POLYMERS; Subject Term: MICROFABRICATION; Subject Term: MICROSTRUCTURE; Subject Term: PHASE separation; Subject Term: POLYMERIZATION; Subject Term: MICROSCOPY; Subject Term: SURFACE chemistry; Number of Pages: 4p; Illustrations: 3 Diagrams, 1 Graph; Document Type: Article L3 - 10.1063/1.4881976 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96394077&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Linares, Richard AU - Jah, Moriba K. AU - Crassidis, John L. AU - Leve, Fred A. AU - Kelecy, Tom T1 - Astrometric and photometric data fusion for inactive space object mass and area estimation. JO - Acta Astronautica JF - Acta Astronautica Y1 - 2014/06// VL - 99 M3 - Article SP - 1 EP - 15 SN - 00945765 AB - Abstract: This paper presents a new method to determine the mass of an inactive space object from the fusion of photometric and astrometric data. Typically, the effect of solar radiation pressure is used to determine area-to-mass ratio for space objects from angles observations. The area-to-mass ratio of a space object can greatly affect its orbital dynamics. As a consequence, angles data are sensitive to this quantity. On the other hand, photometric data is not sensitive to mass but is a strong function of the albedo-area and the rotational dynamics of the space object. The albedo-area can be used to determine the amount of energy reflected from solar radiation. Since these two data types are sensitive to albedo-area and area-to-mass, then through fusion of photometric data with angles data it is possible to determine the area and mass of a space object. This work employs an unscented Kalman filter to estimate rotational and translational states, area and mass of an inactive space object. Mass is not observable with only angles data or only photometric data alone, but it is shown in this work that with the two combined data types mass can be recovered. Recovery of space object characteristics and attitude and orbit trajectories with sufficient accuracy is demonstrated in this paper via simulation. [Copyright &y& Elsevier] AB - Copyright of Acta Astronautica is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASTROMETRY KW - ASTRONOMICAL photometry KW - DATA fusion (Statistics) KW - PARAMETER estimation KW - SOLAR radiation KW - Mass estimation KW - Orbit determination KW - Unscented Kalman filter N1 - Accession Number: 95627632; Linares, Richard 1; Email Address: linares2@buffalo.edu Jah, Moriba K. 2; Email Address: AFRL.RVSV@Kirtland.af.mil Crassidis, John L. 1; Email Address: johnc@buffalo.edu Leve, Fred A. 2; Email Address: AFRL.RVSV@Kirtland.af.mil Kelecy, Tom 3; Email Address: thomas.m.kelecy@boeing.com; Affiliation: 1: University at Buffalo, State University of New York, Amherst, NY 14260-4400, United States 2: Air Force Research Laboratory, Kirtland AFB, NM 87117, United States 3: The Boeing Company, Colorado Springs, CO 80919, United States; Source Info: Jun2014, Vol. 99, p1; Subject Term: ASTROMETRY; Subject Term: ASTRONOMICAL photometry; Subject Term: DATA fusion (Statistics); Subject Term: PARAMETER estimation; Subject Term: SOLAR radiation; Author-Supplied Keyword: Mass estimation; Author-Supplied Keyword: Orbit determination; Author-Supplied Keyword: Unscented Kalman filter; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.actaastro.2013.10.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95627632&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shurdha, Endrit AU - Dees, Kelsey AU - Miller, Hannah A. AU - Iacono, Scott T. AU - Balaich, Gary J. T1 - 3-(4-Bromophenyl)cyclopent-2-en-1-one. JO - Acta Crystallographica: Section E (International Union of Crystallography - IUCr) JF - Acta Crystallographica: Section E (International Union of Crystallography - IUCr) Y1 - 2014/06// VL - 70 IS - 6 M3 - Article SP - o692 EP - o692 SN - 16005368 AB - The article offers information on the crystal structure of the organic compound 3-(4-Bromophenyl)cyclopent-2-en-1-one. Topics discussed include experimental data of the crystal, data collection method and refinement parameters. It presents a chart showing chemical bonds geometry of the crystal. It also offers information on literature on pharmacological properties of the crystal. KW - PHENYL compounds KW - CRYSTAL structure KW - CRYSTALS -- Chemical bonds KW - ORGANIC compounds KW - CRYSTALLOGRAPHY N1 - Accession Number: 99855636; Shurdha, Endrit 1 Dees, Kelsey 1 Miller, Hannah A. 1 Iacono, Scott T. 1 Balaich, Gary J. 1; Email Address: gary.balaich@usafa.edu; Affiliation: 1: Department of Chemistry and Chemistry Research Center, 2355 Fairchild Drive, Suite 2N 225, United States Air Force Academy, Colorado Springs, CO 80840, USA; Source Info: 2014, Vol. 70 Issue 6, po692; Subject Term: PHENYL compounds; Subject Term: CRYSTAL structure; Subject Term: CRYSTALS -- Chemical bonds; Subject Term: ORGANIC compounds; Subject Term: CRYSTALLOGRAPHY; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1107/S160053681401071X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99855636&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schlueter, Kristy L. AU - Jones, Anya R. AU - Granlund, Kenneth AU - Ol, Michael AU - Naguib, A. T1 - Effect of Root Cutout on Force Coefficients of Rotating Wings. JO - AIAA Journal JF - AIAA Journal Y1 - 2014/06// VL - 52 IS - 6 M3 - Article SP - 1322 EP - 1325 SN - 00011452 AB - The article presents a study which aims to identify a method to compare the forces produced by a rotating wing with those produced by a translating wing, with particular consideration on the effect of root cutout on force coefficients of the rotating wings. It states that the two local maxima were found in the force coefficient histories for entire root cutouts. Results showed varying magnitude and location of the second local maxima with the root cutout. KW - ROOTS of equations KW - ELECTRIC cut-outs KW - ROTORS (Helicopters) KW - COEFFICIENTS (Statistics) KW - MAXIMA & minima N1 - Accession Number: 96698285; Schlueter, Kristy L. 1,2 Jones, Anya R. 1,3 Granlund, Kenneth 4,5 Ol, Michael 4,6 Naguib, A.; Affiliation: 1: University of Maryland, College Park, Maryland 20742 2: Graduate Research Assistant, Department of Aerospace Engineering 3: Assistant Professor, Department of Aerospace Engineering, Senior Member AIAA 4: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 5: Aerospace Systems Directorate, Senior Member AIAA 6: Senior Aerospace Engineer, Aerospace Systems Directorate; Source Info: Jun2014, Vol. 52 Issue 6, p1322; Subject Term: ROOTS of equations; Subject Term: ELECTRIC cut-outs; Subject Term: ROTORS (Helicopters); Subject Term: COEFFICIENTS (Statistics); Subject Term: MAXIMA & minima; NAICS/Industry Codes: 335930 Wiring device manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.2514/1.J052821 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96698285&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ekici, Kivanc AU - Beran, Philip S. AU - Epureanu, B. T1 - Adjoint Sensitivity Analysis of Low-Speed Flows Using an Efficient Harmonic Balance Technique. JO - AIAA Journal JF - AIAA Journal Y1 - 2014/06// VL - 52 IS - 6 M3 - Article SP - 1330 EP - 1336 SN - 00011452 AB - The article presents a study of the adjoint sensitivity of unsteady low-speed flows using an efficient time-spectral harmonic balance approach. The study used a finite-difference approach to assess the accuracy of the adjoint senstivities. It suggests that the cost can be up to 3-5 times the cost of a single computational fluid dynamics (CFD) run when the number of design variables is in hundreds. KW - ADJOINT differential equations KW - ADJOINT operators (Quantum mechanics) KW - HARMONIC drives KW - FINITE difference method KW - COMPUTATIONAL fluid dynamics N1 - Accession Number: 96698287; Ekici, Kivanc 1,2 Beran, Philip S. 3,4 Epureanu, B.; Affiliation: 1: University of Tennessee, Knoxville, Tennessee 37996 2: Assistant Professor, Mechanical, Aerospace, and Biomedical Engineering Department, Senior Member AIAA 3: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 4: Principal Research Aerospace Engineer, Aerospace Systems Directorate; Source Info: Jun2014, Vol. 52 Issue 6, p1330; Subject Term: ADJOINT differential equations; Subject Term: ADJOINT operators (Quantum mechanics); Subject Term: HARMONIC drives; Subject Term: FINITE difference method; Subject Term: COMPUTATIONAL fluid dynamics; Number of Pages: 7p; Document Type: Article L3 - 10.2514/1.J052884 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96698287&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Houpt, Joseph AU - Blaha, Leslie AU - McIntire, John AU - Havig, Paul AU - Townsend, James T1 - Systems factorial technology with R. JO - Behavior Research Methods JF - Behavior Research Methods Y1 - 2014/06// VL - 46 IS - 2 M3 - Article SP - 307 EP - 330 SN - 1554351X AB - Systems factorial technology (SFT) comprises a set of powerful nonparametric models and measures, together with a theory-driven experiment methodology termed the double factorial paradigm (DFP), for assessing the cognitive information-processing mechanisms supporting the processing of multiple sources of information in a given task (Townsend and Nozawa, Journal of Mathematical Psychology 39:321-360, ). We provide an overview of the model-based measures of SFT, together with a tutorial on designing a DFP experiment to take advantage of all SFT measures in a single experiment. Illustrative examples are given to highlight the breadth of applicability of these techniques across psychology. We further introduce and demonstrate a new package for performing SFT analyses using R for statistical computing. [ABSTRACT FROM AUTHOR] AB - Copyright of Behavior Research Methods is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONPARAMETRIC estimation KW - LANGUAGE & languages -- Cognitive processing KW - EXPERIMENTAL design KW - SCIENTIFIC method KW - RESEARCH N1 - Accession Number: 96126898; Houpt, Joseph 1; Email Address: joseph.houpt@wright.edu Blaha, Leslie 2 McIntire, John 2 Havig, Paul 2 Townsend, James 3; Affiliation: 1: Department of Psychology, Wright State University, 3640 Colonel Glenn Highway Dayton 45435 USA 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Wright-Patterson AFB USA 3: Indiana University, Bloomington USA; Source Info: Jun2014, Vol. 46 Issue 2, p307; Subject Term: NONPARAMETRIC estimation; Subject Term: LANGUAGE & languages -- Cognitive processing; Subject Term: EXPERIMENTAL design; Subject Term: SCIENTIFIC method; Subject Term: RESEARCH; Number of Pages: 24p; Document Type: Article L3 - 10.3758/s13428-013-0377-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96126898&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mostafa, Hala AU - Pal, Partha AU - Hurley, Patrick T1 - Message Passing for Distributed QoS-Security Tradeoffs†. JO - Computer Journal JF - Computer Journal Y1 - 2014/06// VL - 57 IS - 6 M3 - Article SP - 840 EP - 855 SN - 00104620 AB - Information assurance (IA) is a growing concern, since almost every aspect of our lives depends on distributed information systems and the frequency and sophistication of cyber attacks targeting these systems is on the rise. However, IA cannot be considered in isolation, as it also affects the Quality of Service (QoS); with limited resources, the security mechanisms employed for IA (e.g. firewalls, antivirus, encryption) usually adversely affect QoS levels delivered by a system. The system therefore needs to make tradeoffs between IA and QoS. These tradeoffs are complicated by the facts that users’ relative preferences over QoS–IA change based on the situation, the preferences of different users conflict and tradeoff decisions made at one node in the distributed system typically affect other nodes as well. We address the problem of distributed computation of tradeoffs among various aspects of QoS and IA in a way that maximizes the satisfaction of all stakeholders. Specifically, we want the nodes in the system to make coordinated decisions as to what local actions to take to optimize QoS/IA levels delivered by the system. Our first contribution is formulating this problem as a distributed constraint optimization problem (DCOP). This entails quantifying various notions involved in tradeoffs to be able to compare options in the course of optimization, as well as encoding the effects of various decisions on the quantities we want to optimize. The DCOPs we obtain have cost functions where multiple local configurations result in the same cost. In addition, the corresponding factor graphs contain many cycles. To deal with these issues, our second contribution is a value propagation (VP) algorithm that helps nodes reach a consistent set of decisions even in cyclic factor graphs with non-unique local optima. We present experimental results comparing the performance of the max-sum algorithm with and without VP against other algorithms when applied to domain-inspired and random instances. On the domain-inspired instances, max-sum with VP achieves near optimal solutions at a fraction of time taken by Distributed Pseudotree Optimization Procedure, with the reduction in solution cost due to VP most pronounced in scenarios with resource contention. On random instances, VP obtains solutions with cost 1.7× of optimal, even when performed without a utility propagation algorithm first. [ABSTRACT FROM AUTHOR] AB - Copyright of Computer Journal is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFORMATION assurance KW - DATA security KW - QUALITY of service KW - CONSTRAINT programming (Computer science) KW - COMPUTER algorithms KW - distributed constraint optimization KW - information assurance KW - value propagation N1 - Accession Number: 96236259; Mostafa, Hala 1 Pal, Partha 1 Hurley, Patrick 2; Affiliation: 1: Raytheon BBN Technologies, Cambridge, MA 02138, USA 2: Air Force Research Laboratory, Rome, NY 13441, USA; Source Info: Jun2014, Vol. 57 Issue 6, p840; Subject Term: INFORMATION assurance; Subject Term: DATA security; Subject Term: QUALITY of service; Subject Term: CONSTRAINT programming (Computer science); Subject Term: COMPUTER algorithms; Author-Supplied Keyword: distributed constraint optimization; Author-Supplied Keyword: information assurance; Author-Supplied Keyword: value propagation; NAICS/Industry Codes: 541519 Other Computer Related Services; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); Number of Pages: 16p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96236259&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, F. AU - Fu, B. AU - Luo, H. AU - Staggs, S. AU - Mirshams, R. AU - Cooper, W. AU - Park, S. AU - Kim, M. AU - Hartley, C. AU - Lu, H. T1 - Characterization of the Grain-Level Mechanical Behavior of Eglin Sand by Nanoindentation. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2014/06// VL - 54 IS - 5 M3 - Article SP - 871 EP - 884 SN - 00144851 AB - Characterization was made on the structure and grain-level mechanical behavior of Eglin sand (Quikrete #1961 sand quarried in Pensacola, FL). The as-received assorted sand was sorted to six grain sizes: 0.60 mm, 0.50 mm, 0.42 mm, 0.30 mm, 0.212 mm, and 0.15 mm. The sand chemical constituents and crystalline structures were determined using energy dispersive X-ray spectroscopy, X-ray diffraction and transmission electron microscopy. The Young's modulus and hardness were determined using nanoindentation with a Berkovich tip, and the fracture toughness was measured using a cube-corner tip. The median Young's modulus, hardness and fracture toughness were determined as 90.4 GPa, 12.8 GPa and 2.32 MPa⋅m, respectively. The mechanical properties were analyzed statistically and the parameters of the Weibull distribution were determined. The grains show highly ductile behavior under nanoindentation due to confinement by high pressure induced by Berkovich tip. An inverse problem solving approach using finite element method (FEM) with the consideration of the Ramberg-Osgood model was used to determine the stress-strain relationship for individual sand grains. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SAND KW - RESEARCH KW - NANOINDENTATION KW - HARDNESS KW - STRAINS & stresses (Mechanics) KW - CRYSTAL structure KW - FINITE element method KW - Finite element method KW - Fracture toughness KW - Hardness KW - Nanoindentation KW - Sand KW - Young's modulus N1 - Accession Number: 95905673; Wang, F. Fu, B. 1 Luo, H. 2 Staggs, S. 1 Mirshams, R. 3 Cooper, W. 4 Park, S. 5 Kim, M. 6 Hartley, C. 7 Lu, H. 2; Email Address: hongbing.lu@utdallas.edu; Affiliation: 1: School of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater 74078 USA 2: Department of Mechanical Engineering, The University of Texas at Dallas, Richardson 75080 USA 3: Department of Engineering Technology, University of North Texas, Denton 76203 USA 4: Air Force Research Laboratory, Kirkland Air Force Base, Albuquerque 87117 USA 5: Samsung Electronics Co., Hwasung-City 445-701 South Korea 6: Department of Materials Science and Engineering, The University of Texas at Dallas, Richardson 75080 USA 7: El Arroyo Enterprises LLC, Sedona 86336 USA; Source Info: Jun2014, Vol. 54 Issue 5, p871; Subject Term: SAND; Subject Term: RESEARCH; Subject Term: NANOINDENTATION; Subject Term: HARDNESS; Subject Term: STRAINS & stresses (Mechanics); Subject Term: CRYSTAL structure; Subject Term: FINITE element method; Author-Supplied Keyword: Finite element method; Author-Supplied Keyword: Fracture toughness; Author-Supplied Keyword: Hardness; Author-Supplied Keyword: Nanoindentation; Author-Supplied Keyword: Sand; Author-Supplied Keyword: Young's modulus; NAICS/Industry Codes: 416390 Other specialty-line building supplies merchant wholesalers; NAICS/Industry Codes: 212321 Construction Sand and Gravel Mining; NAICS/Industry Codes: 484232 Dry bulk materials trucking, long distance; NAICS/Industry Codes: 484222 Dry bulk materials trucking, local; NAICS/Industry Codes: 423320 Brick, Stone, and Related Construction Material Merchant Wholesalers; Number of Pages: 14p; Document Type: Article L3 - 10.1007/s11340-013-9845-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95905673&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wu, Yeqing AU - Kumar, Sunil AU - Hu, Fei AU - Zhu, Yingying AU - Matyjas, John D. T1 - Cross-Layer Forward Error Correction Scheme Using Raptor and RCPC Codes for Prioritized Video Transmission Over Wireless Channels. JO - IEEE Transactions on Circuits & Systems for Video Technology JF - IEEE Transactions on Circuits & Systems for Video Technology Y1 - 2014/06// VL - 24 IS - 6 M3 - Article SP - 1047 EP - 1060 SN - 10518215 AB - The unequal error protection (UEP) has shown promising results for transmitting video over error-prone wireless channels. In this paper, we investigate the cross-layer design of forward error correction (FEC) schemes by using the UEP Raptor codes at the application layer (AL) and UEP rate compatible punctured convolutional (RCPC) codes at physical layer (PHY) for prioritized video packets. The video packets are prioritized based on their contribution to the received video quality. A genetic algorithm (GA)-based optimization algorithm is proposed to find the optimal parameters for both Raptor and RCPC codes, to minimize the video distortion and maximize the peak signal-to-noise-ratio for the given video bit rates and channel constraints (i.e., SNR and available bandwidth). We evaluate the performance of four combinations of the UEP schemes for H.264/AVC encoded video sequences over the AWGN and Rayleigh fading channels and show the superiority of the optimized cross-layer UEP FEC scheme. For Rayleigh fading channel, the proposed cross-layer optimization uses two different time-scales at AL and PHY which allows PHY to adapt faster to the changing channel quality. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Circuits & Systems for Video Technology is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ERROR correction (Information theory) KW - VIDEO coding (Computer science) KW - GENETIC algorithms KW - WIRELESS communication systems KW - DATA packets & packeting KW - RADIO transmitters & transmission -- Fading KW - Bandwidth KW - Decoding KW - Encoding KW - Forward error correction KW - Optimization KW - PSNR KW - Streaming media N1 - Accession Number: 96381436; Wu, Yeqing 1 Kumar, Sunil 2 Hu, Fei 1 Zhu, Yingying 3 Matyjas, John D. 4; Affiliation: 1: Electrical and Computer Engineering Department, University of Alabama, Tuscaloosa, AL, USA 2: Electrical and Computer Engineering Department, San Diego State University, San Diego, CA, USA 3: Electrical and Computer Engineering Department, University of California, Riverside, CA, USA 4: , Air Force Research Laboratory, Rome, NY, USA; Source Info: Jun2014, Vol. 24 Issue 6, p1047; Subject Term: ERROR correction (Information theory); Subject Term: VIDEO coding (Computer science); Subject Term: GENETIC algorithms; Subject Term: WIRELESS communication systems; Subject Term: DATA packets & packeting; Subject Term: RADIO transmitters & transmission -- Fading; Author-Supplied Keyword: Bandwidth; Author-Supplied Keyword: Decoding; Author-Supplied Keyword: Encoding; Author-Supplied Keyword: Forward error correction; Author-Supplied Keyword: Optimization; Author-Supplied Keyword: PSNR; Author-Supplied Keyword: Streaming media; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TCSVT.2014.2302151 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96381436&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Banerjee, Tania AU - Sahni, Sartaj AU - Seetharaman, Gunasekaran T1 - PC-DUOS+: A TCAM Architecture for Packet Classifiers. JO - IEEE Transactions on Computers JF - IEEE Transactions on Computers Y1 - 2014/06// VL - 63 IS - 6 M3 - Article SP - 1527 EP - 1540 SN - 00189340 AB - We propose algorithms for distributing the classifier rules to two ternary content addressable memories (TCAMs) and for incrementally updating the TCAMs. The performance of our scheme is compared against the prevalent scheme of storing classifier rules in a single TCAM in priority order. Our scheme results in an improvement in average lookup speed by up to 49% and an improvement in update performance by up to 3.84 times in terms of the number of TCAM writes. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Computers is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER architecture KW - DATA packets & packeting KW - COMPUTER algorithms KW - RANDOM access memory KW - SCHEME (Computer program language) KW - COMPUTER network protocols KW - Computer architecture KW - Encoding KW - Indexes KW - Packet classifiers KW - Protocols KW - Random access memory KW - ternary content addressable memories (TCAMs) KW - Throughput KW - updates N1 - Accession Number: 96647913; Banerjee, Tania 1 Sahni, Sartaj 1 Seetharaman, Gunasekaran 2; Affiliation: 1: Department of Computer and Information Science and Engineering, University of Florida, Gainesville, 2: Air Force Research Laboratory (AFRL), Rome,; Source Info: Jun2014, Vol. 63 Issue 6, p1527; Subject Term: COMPUTER architecture; Subject Term: DATA packets & packeting; Subject Term: COMPUTER algorithms; Subject Term: RANDOM access memory; Subject Term: SCHEME (Computer program language); Subject Term: COMPUTER network protocols; Author-Supplied Keyword: Computer architecture; Author-Supplied Keyword: Encoding; Author-Supplied Keyword: Indexes; Author-Supplied Keyword: Packet classifiers; Author-Supplied Keyword: Protocols; Author-Supplied Keyword: Random access memory; Author-Supplied Keyword: ternary content addressable memories (TCAMs); Author-Supplied Keyword: Throughput; Author-Supplied Keyword: updates; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TC.2012.287 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96647913&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Greenwood, Andrew D. AU - Lehr, F. Mark AU - Nanni, Emilio A. T1 - Guest Editorial The Fifteenth Special Issue on High-Power Microwave Generation. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2014/06//Jun2014 Part 1 VL - 42 IS - 6 M3 - Article SP - 1481 EP - 1481 SN - 00933813 AB - The publication this year of the Fifteenth Special Issue on High-Power Microwave Generation continues a tradition in the field dating back to 1985. While the editors are concerned with the somewhat sparse selection of papers in this issue, the diversity of authorship both geographically and across research institutions is gratifying. The body of work represented by this volume emphasizes a clear continuation, in fact acceleration, of the use computational tools, which has represented a consistent trend in recent issues. Most notable are Particle in Cell (PIC) codes, which have enabled the optimization and virtual prototyping of a variety of High Power Microwave (HPM) sources. The overwhelming success of modern computational tools has all but eliminated the need for empirical iteration in the hardware realization of a given source design. Instead, any iteration proceeds during a virtual, numerical design process, and the final design is the only one built, saving both time and money. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVE generation KW - VIRTUAL prototypes KW - ELECTROMAGNETISM KW - High power microwave generation KW - Microwave generation KW - Power generation KW - Special issues and sections N1 - Accession Number: 96423334; Greenwood, Andrew D. 1 Lehr, F. Mark 2 Nanni, Emilio A. 3; Affiliation: 1: , Air Force Research Laboratory, Kirtland AFB, NM, USA 2: High Power Electromagnetics Division, Air Force Research Laboratory Directed Energy Directorate, Kirtland AFB, NM, USA 3: , Massachusetts Institute of Technology, Cambridge, MA, USA; Source Info: Jun2014 Part 1, Vol. 42 Issue 6, p1481; Subject Term: MICROWAVE generation; Subject Term: VIRTUAL prototypes; Subject Term: ELECTROMAGNETISM; Author-Supplied Keyword: High power microwave generation; Author-Supplied Keyword: Microwave generation; Author-Supplied Keyword: Power generation; Author-Supplied Keyword: Special issues and sections; Number of Pages: 1p; Document Type: Article L3 - 10.1109/TPS.2014.2323679 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96423334&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pitz, Greg A. AU - Sandoval, Andrew J. AU - Tafoya, Tiffany B. AU - Klennert, Wade L. AU - Hostutler, David A. T1 - Pressure broadening and shift of the rubidium D 1 transition and potassium D 2 transitions by various gases with comparison to other alkali rates. JO - Journal of Quantitative Spectroscopy & Radiative Transfer JF - Journal of Quantitative Spectroscopy & Radiative Transfer Y1 - 2014/06// VL - 140 M3 - Article SP - 18 EP - 29 SN - 00224073 AB - Abstract: The pressure broadening and shift rates for the K D 2 ( ) transition with N2, CH4, C2H6, C3H8, n-C4H10, and the noble gases were obtained for pressures up to 80 Torr and at a temperature of 55°C by means of laser absorption spectroscopy. Additionally, the broadening and shift rates for the Rb D 1 ( ) transition for He, CH4, C2H6, C3H8, and n-C4H10 were obtained using the same techniques and under similar conditions. The K D 2 collisional broadening rate, , for He, Ne, Ar, Kr, Xe, N2, CH4, C2H6, C3H8, and n-C4H10 are 19.84, 8.88, 18.65, 19.17, 22.19, 18.98, 27.78, 27.60, 27.70, and 33.48MHz/Torr, respectively. The uncertainty in the broadening rates is typically less than 2.1%. The corresponding pressure induced shift rates, δ, are 0.52, −2.06, −5.52, −5.42, −7.01, −5.66, −8.38, −8.04, −9.22, and −9.37MHz/Torr with an uncertainty of less than 1.8%. The Rb D 1 collisional broadening rates for He, CH4, C2H6, C3H8, and n-C4H10 are 20.80, 32.78, 30.49, 33.05, and 29.61 with uncertainties typically less than 2.2%. The collisional shift rates for the Rb D 1 transition are 5.80, −6.96, −7.88, −8.61, and −9.43 with uncertainties on the order of 1.1%. A comparison with the other alkali broadening and shift cross-sections is presented. [Copyright &y& Elsevier] AB - Copyright of Journal of Quantitative Spectroscopy & Radiative Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRESSURE broadening KW - RUBIDIUM KW - POTASSIUM KW - ALKALIES KW - NOBLE gases KW - ABSORPTION spectra KW - DPAL KW - Laser absorption KW - Potassium KW - Pressure broadening KW - Pressure shift KW - Rubidium KW - Spectroscopy N1 - Accession Number: 95227767; Pitz, Greg A. 1; Email Address: AFRL.RDLC.SCI.org@kirtland.af.mil Sandoval, Andrew J. 1 Tafoya, Tiffany B. 1 Klennert, Wade L. 2 Hostutler, David A. 1; Affiliation: 1: Air Force Research Laboratory, 3550 Aberdeen Ave SE, Kirtland Air Force Base, NM 87117, USA 2: The Boeing Company, 4411 The 25 Way NE #350, Albuquerque, NM 87109, USA; Source Info: Jun2014, Vol. 140, p18; Subject Term: PRESSURE broadening; Subject Term: RUBIDIUM; Subject Term: POTASSIUM; Subject Term: ALKALIES; Subject Term: NOBLE gases; Subject Term: ABSORPTION spectra; Author-Supplied Keyword: DPAL; Author-Supplied Keyword: Laser absorption; Author-Supplied Keyword: Potassium; Author-Supplied Keyword: Pressure broadening; Author-Supplied Keyword: Pressure shift; Author-Supplied Keyword: Rubidium; Author-Supplied Keyword: Spectroscopy; Language of Keywords: German; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325181 Alkali and chlorine manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.jqsrt.2014.01.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95227767&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Galvagno, Samuel M. AU - Dubose, Joseph J. AU - Grissom, Thomas E. AU - Fang, Raymond AU - Smith, Richard AU - Bebarta, Vikhyat S. AU - Shackelford, Stacy AU - Scalea, Thomas M. T1 - The Epidemiology of Critical Care Air Transport Team Operations in Contemporary Warfare. JO - Military Medicine JF - Military Medicine Y1 - 2014/06// VL - 179 IS - 6 M3 - Article SP - 612 EP - 618 PB - AMSUS SN - 00264075 AB - Critical Care Air Transport Teams (CCATTs) have evolved as a vital component of the U.S. Air Force's aeromedical evacuation system. Previous epidemiological research in this area is limited. The objective of this commentary is to highlight the importance of obtaining robust epidemiological data regarding patients transported by CCATTs. A limited epidemiological analysis was performed to describe CCATT patients transported during Operation Enduring Freedom and the waning months of Operation Iraqi Freedom. CCATT transports for the calendar year 2011 were examined as recorded in the U.S. Transportation Command Regulating and Command and Control (C2) Evacuation System database. As many as 290 CCATT primary patient transport records were reviewed. Of these, 58.6% of patients had multiple injuries, 15.9% of patients had traumatic brain injury, 7% had acute coronary syndromes, and 24.8% of all transports were for nonbattle-related injuries. The most common International Classification of Disease, 9th Edition. Clinical Modification coded injury was bilateral lower extremity amputation (40%). Explosive blasts were the top mechanism of injury for patients requiring CCAT. The distribution of injuries and illnesses requiring CCAT appear to have changed compared to previous conventional conflicts. Understanding the epidemiology of casualties evacuated by CCATT during modern warfare is a prerequisite for the development of effective predeployment training to ensure optimal outcomes for critically ill and injured warriors. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRITICAL care medicine KW - RESEARCH KW - MILITARY medicine KW - EPIDEMIOLOGY -- Research KW - MILITARY personnel -- Wounds & injuries KW - WAR casualties N1 - Accession Number: 96442609; Galvagno, Samuel M. 1,2 Dubose, Joseph J. 3,4 Grissom, Thomas E. 1,2 Fang, Raymond 3,4 Smith, Richard 5 Bebarta, Vikhyat S. 6 Shackelford, Stacy 3,4 Scalea, Thomas M. 3; Affiliation: 1: Divisions of Trauma Anesthesiology, Department of Anesthesiology, Program in Trauma, Shock Trauma Center, University of Maryland School of Medicine, T1R83. 22 South Greene Street, Baltimore, MD 21201 2: Divisions of Critical Care Medicine, Department of Anesthesiology, Program in Trauma, Shock Trauma Center, University of Maryland School of Medicine, T1R83, 22 South Greene Street, Baltimore, MD 21201 3: Program in Trauma, Shock Trauma Center, University of Maryland School of Medicine, 22 South Greene Street, Baltimore, MD 21201 4: Center for Sustainment of Trauma and Readiness Skills (CSTARS), United States Air Force, 22 South Greene Street, Baltimore, MD 21201 5: Air University, Maxwell Air Force Base, Montgomery, AL 36112-6335 6: Route Care Research Center, U. S. Army Institute of Surgical Research, Fort Sam Houston, TX; Source Info: Jun2014, Vol. 179 Issue 6, p612; Subject Term: CRITICAL care medicine; Subject Term: RESEARCH; Subject Term: MILITARY medicine; Subject Term: EPIDEMIOLOGY -- Research; Subject Term: MILITARY personnel -- Wounds & injuries; Subject Term: WAR casualties; Number of Pages: 7p; Illustrations: 3 Charts, 2 Graphs; Document Type: Article L3 - 10.7205/MILMED-D-13-00474 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96442609&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nowadly, Craig D. AU - David, Jason W. AU - M. Grogger, Melanie L. AU - Demkowicz, Erik R. AU - Atchley, Daniel H. AU - Veverka, Donald V. T1 - Characterization of the Effects of Heat Stress on the DNA-Intercalating Dye EvaGreen for Potential Use With the Joint Biological Agent Identification and Diagnostic System. JO - Military Medicine JF - Military Medicine Y1 - 2014/06// VL - 179 IS - 6 M3 - Article SP - 626 EP - 632 PB - AMSUS SN - 00264075 AB - Although advances in real-time polymerase chain reaction (PCR) technology and equipment have facilitated field research, only a limited selection of reagents do not require cold storage. This study explored the temperature stability of the commercially available DNA-intercalating dye EvaGreen after exposure to a spectrum of temperatures for 176 days by analyzing quantification cycle (Cq) and end fluorescence levels during amplification of the invA gene of Salmonella typhimurium. To further characterize potential dye stability, the effects of small differences in dye volume were examined and dye samples were subjected to an Air Force deployment to the Middle East. Significant differences in Cq and end fluorescence were found; however, the magnitude of mean Cq differences was less than one cycle and the magnitude of mean fluorescence differences was less than that attributable to a difference of 0.25 μL of dye per 25 μL reaction. Liquid EvaGreen dye may thus be stable at temperatures as high as 65 °C for up to 6 months for use in real-time PCR. These results warrant further investigation by using liquid EvaGreen dye to adapt traditional lab-based real-time PCR assays for Joint Biological Agent Identification and Diagnostic System use and testing the assays in the field. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERASE chain reaction KW - RESEARCH KW - SALMONELLA typhimurium KW - MILITARY medicine KW - MEDICAL technology -- Research KW - BIOLOGICAL assay -- Research N1 - Accession Number: 96442615; Nowadly, Craig D. 1 David, Jason W. 1 M. Grogger, Melanie L. 1 Demkowicz, Erik R. 1 Atchley, Daniel H. 2 Veverka, Donald V. 1; Affiliation: 1: United States Air Force Academy, 2355 Faculty Drive, USAF Academy, CO 80840 2: Harding University College of Pharmacy, 915 East Market Street, Searcy, AR 72149; Source Info: Jun2014, Vol. 179 Issue 6, p626; Subject Term: POLYMERASE chain reaction; Subject Term: RESEARCH; Subject Term: SALMONELLA typhimurium; Subject Term: MILITARY medicine; Subject Term: MEDICAL technology -- Research; Subject Term: BIOLOGICAL assay -- Research; Number of Pages: 7p; Illustrations: 2 Charts, 4 Graphs; Document Type: Article L3 - 10.7205/MILMED-D-13-00515 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96442615&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wie, Jeong Jae AU - Lee, Kyung Min AU - White, Timothy J. T1 - Thermally and Optically Fixable Shape Memory in Azobenzene-Functionalized Glassy Liquid Crystalline Polymer Networks. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2014/06// VL - 596 IS - 1 M3 - Article SP - 113 EP - 121 SN - 15421406 AB - Thermally and optically fixed shape memory is examined in glassy, azobenzene- functionalized liquid crystalline polymer networks (azo-LCN) in the twisted nematic (TN) geometry. The thermal and optical responses of two materials with a large difference in crosslink density are contrasted. The crosslink density was reduced through the inclusion of a monoacrylate liquid crystal monomer RM23. Reducing the crosslink density decreases the threshold temperature of the thermally-induced shape change and increases the magnitude of the deflection. Surprisingly, samples containing RM23 also allows for retention of a complex permanent shape, potentially due to differentiated thermal response of the pendant and main chain mesogenic units of the azo-LCN material. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMER liquid crystals KW - NEMATIC liquid crystals KW - THERMAL analysis KW - SHAPE memory effect KW - AZOBENZENE KW - POLYMER networks KW - azobenzene KW - Liquid crystal polymer KW - shape memory N1 - Accession Number: 98605319; Wie, Jeong Jae 1,2 Lee, Kyung Min 1,2 White, Timothy J. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio, United States 2: Azimuth Corporation, Dayton, Ohio, United States; Source Info: Jun2014, Vol. 596 Issue 1, p113; Subject Term: POLYMER liquid crystals; Subject Term: NEMATIC liquid crystals; Subject Term: THERMAL analysis; Subject Term: SHAPE memory effect; Subject Term: AZOBENZENE; Subject Term: POLYMER networks; Author-Supplied Keyword: azobenzene; Author-Supplied Keyword: Liquid crystal polymer; Author-Supplied Keyword: shape memory; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1080/15421406.2014.918336 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98605319&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McIntire, John P. AU - Wright, Steve T. AU - Harrington, Lawrence K. AU - Havig, Paul R. AU - Watamaniuk, Scott N. J. AU - Heft, Eric L. T1 - Optometric measurements predict performance but not comfort on a virtual object placement task with a stereoscopic three-dimensional display. JO - Optical Engineering JF - Optical Engineering Y1 - 2014/06// VL - 53 IS - 6 M3 - Article SP - 1 EP - 8 SN - 00913286 AB - Twelve participants were tested on a simple virtual object precision placement task while viewing a stereoscopic three-dimensional (S3-D) display. Inclusion criteria included uncorrected or best corrected vision of 20/20 or better in each eye and stereopsis of at least 40 arc sec using the Titmus stereotest. Additionally, binocular function was assessed, including measurements of distant and near phoria (horizontal and vertical) and distant and near horizontal fusion ranges using standard optometric clinical techniques. Before each of six 30 min experimental sessions, measurements of phoria and fusion ranges were repeated using a Keystone View Telebinocular and an S3-D display, respectively. All participants completed experimental sessions in which the task required the precision placement of a virtual object in depth at the same location as a target object. Subjective discomfort was assessed using the simulator sickness questionnaire. Individual placement accuracy in S3-D trials was significantly correlated with several of the binocular screening outcomes: viewers with larger convergent fusion ranges (measured at near distance), larger total fusion ranges (convergent plus divergent ranges, measured at near distance), and/or lower (better) stereoscopic acuity thresholds were more accurate on the placement task. No screening measures were predictive of subjective discomfort, perhaps due to the low levels of discomfort induced. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STEREOSCOPIC views KW - RESEARCH KW - THREE-dimensional display systems KW - OPTOMETRY KW - HETEROPHORIA KW - INFORMATION display systems KW - binocular vision KW - depth perception KW - optometry KW - S3-D KW - stereopsis KW - virtual environment N1 - Accession Number: 97480059; McIntire, John P. 1; Email Address: john.mcintire.1@us.af.mil Wright, Steve T. 2 Harrington, Lawrence K. 3 Havig, Paul R. 1 Watamaniuk, Scott N. J. 4 Heft, Eric L. 1; Affiliation: 1: U.S. Air Force Research Laboratory, 711 Human Performance Wing, 2255 H Street, Building 248, Wright-Patterson AFB, Ohio 45433 2: U.S. Air Force School of Aerospace Medicine, 2510 5th Street, Building 840, Wright-Patterson AFB, Ohio 45433 3: Ball Aerospace, 2875 Presidential Drive, Fairborn, Ohio 45433 4: Wright State University, Psychology Department, 3640 Colonel Glenn Highway, 335 Fawcett Hall, Dayton, Ohio 45435; Source Info: Jun2014, Vol. 53 Issue 6, p1; Subject Term: STEREOSCOPIC views; Subject Term: RESEARCH; Subject Term: THREE-dimensional display systems; Subject Term: OPTOMETRY; Subject Term: HETEROPHORIA; Subject Term: INFORMATION display systems; Author-Supplied Keyword: binocular vision; Author-Supplied Keyword: depth perception; Author-Supplied Keyword: optometry; Author-Supplied Keyword: S3-D; Author-Supplied Keyword: stereopsis; Author-Supplied Keyword: virtual environment; Number of Pages: 8p; Document Type: Article L3 - 10.1117/1.OE.53.6.061711 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97480059&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Enloe, C. L. AU - Tejero, E. M. AU - Amatucci, W. E. AU - Crabtree, C. AU - Ganguli, G. AU - Sotnikov, V. T1 - Effects of neutral interactions on velocity-shear-driven plasma waves. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2014/06// VL - 21 IS - 6 M3 - Article SP - 1 EP - 8 PB - American Institute of Physics SN - 1070664X AB - In a laboratory experiment, we demonstrate the substantial effects that collisions between charged and neutral particles have on low-frequency (Ωi ≪ ω ≪ Ωi) shear-driven electrostatic lower hybrid waves in a plasma. We establish a strong (up to 2.5 kV/m) highly localized electric field with a length scale shorter than the ion gyroradius, so that the ions in the plasma, unlike the electrons, do not develop the full E × B drift velocity. The resulting shear in the particle velocities initiates the electron-ion hybrid (EIH) instability, and we observe the formation of strong waves in the vicinity of the shear with variations in plasma densities of 10% or greater. Our experimental configuration allows us to vary the neutral background density by more than a factor of two while holding the charged particle density effectively constant. Not surprisingly, increasing the neutral density decreases the growth rate/saturation amplitude of the waves and increases the threshold electric field necessary for wave formation, but the presence of neutrals affects the dominant wave frequency as well. We show that a 50% increase in the neutral density decreases the wave frequency by 20% while also suppressing the electric field dependence of the frequency that is observed when fewer neutrals are present. The majority of these effects, as well as the values of the frequencies we observe, closely match the predictions of previously developed linear EIH instability theory, for which we present the results of a numerical solution. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA waves KW - SHEAR flow KW - ELECTROSTATICS KW - ELECTRIC fields KW - PLASMA density KW - ELECTRONS N1 - Accession Number: 96971561; Enloe, C. L. 1 Tejero, E. M. 2 Amatucci, W. E. 2 Crabtree, C. 2 Ganguli, G. 2 Sotnikov, V. 3; Affiliation: 1: Physics Department, US Air Force Academy, Colorado Springs, Colorado 80840, USA 2: Plasma Physics Division, Naval Research Laboratory, Washington, DC 20375, USA 3: Sensors Directorate, Air Force Research Laboratory, Dayton, Ohio 45433, USA; Source Info: Jun2014, Vol. 21 Issue 6, p1; Subject Term: PLASMA waves; Subject Term: SHEAR flow; Subject Term: ELECTROSTATICS; Subject Term: ELECTRIC fields; Subject Term: PLASMA density; Subject Term: ELECTRONS; Number of Pages: 8p; Illustrations: 1 Diagram, 1 Chart, 14 Graphs; Document Type: Article L3 - 10.1063/1.4885315 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96971561&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sheikholeslami, Somayyeh AU - Pandey, R. B. AU - Dragneva, Nadiya AU - Floriano, Wely AU - Rubel, Oleg AU - Barr, Stephen A. AU - Zhifeng Kuang AU - Berry, Rajiv AU - Naik, Rajesh AU - Farmer, Barry T1 - Binding of solvated peptide (EPLQLKM) with a graphene sheet via simulated coarse-grained approach. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2014/05/28/ VL - 140 IS - 20 M3 - Article SP - 204901-1 EP - 204901-8 PB - American Institute of Physics SN - 00219606 AB - Binding of a solvated peptide A1 (1E 2P 3L 4Q 5L 6K 7M) with a graphene sheet is studied by a coarse-grained computer simulation involving input from three independent simulated interaction potentials in hierarchy. A number of local and global physical quantities such as energy, mobility, and binding profiles and radius of gyration of peptides are examined as a function of temperature (T). Quantitative differences (e.g., the extent of binding within a temperature range) and qualitative similarities are observed in results from three simulated potentials. Differences in variations of both local and global physical quantities suggest a need for such analysis with multiple inputs in assessing the reliability of both quantitative and qualitative observations. While all three potentials indicate binding at low T and unbinding at high T, the extent of binding of peptide with the temperature differs. Unlike un-solvated peptides (with little variation in binding among residues), solvation accentuates the differences in residue binding. As a result the binding of solvated peptide at low temperatures is found to be anchored by three residues, 1E, 4Q, and 6K (different from that with the un-solvated peptide). Binding to unbinding transition can be described by the variation of the transverse (with respect to graphene sheet) component of the radius of gyration of the peptide (a potential order parameter) as a function of temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPHENE KW - PEPTIDES KW - BINDING agents KW - TEMPERATURE KW - COMPUTER simulation N1 - Accession Number: 96302230; Sheikholeslami, Somayyeh 1 Pandey, R. B. 1 Dragneva, Nadiya 2 Floriano, Wely 2 Rubel, Oleg 2 Barr, Stephen A. 3 Zhifeng Kuang 3 Berry, Rajiv 3 Naik, Rajesh 3 Farmer, Barry 3; Affiliation: 1: Department of Physics and Astronomy, University of Southern Mississippi, Hattiesburg, Mississippi 39406-0001, USA 2: Thunder Bay Regional Research Institute and Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, USA; Source Info: 5/28/2014, Vol. 140 Issue 20, p204901-1; Subject Term: GRAPHENE; Subject Term: PEPTIDES; Subject Term: BINDING agents; Subject Term: TEMPERATURE; Subject Term: COMPUTER simulation; Number of Pages: 8p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1063/1.4876716 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96302230&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carter, Jennifer L.W. AU - Kuper, Michael W. AU - Uchic, Michael D. AU - Mills, Michael J. T1 - Characterization of localized deformation near grain boundaries of superalloy René-104 at elevated temperature. JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2014/05/27/ VL - 605 M3 - Article SP - 127 EP - 136 SN - 09215093 AB - in situ surface deformation measurement techniques were applied to characterize strain localization sites in nickel-based superalloys when tested under constant load at 700°C. Deformation maps were coupled with electron backscatter diffraction (EBSD) measurement of grain location and orientation to correlate localization sites with underlying surface microstructure. Superalloy René-104 was heat treated and quenched to create two microstructures with similar grain sizes but different grain boundary character: the standard microstructure had microscopically planar grain boundaries, and the other microstructure had serrated grain boundaries. Analysis of full field strain maps calculated from in situ scanning electron microscopy (SEM) images indicated distinct differences in strain localization as a function of total strain for the two microstructures. The standard microstructure showed very little intra-granular strain accumulation, and annealing twin boundaries played an important role in strain localization sites, whereas the serrated microstructure experienced strain accumulation more evenly throughout the microstructure. Grain boundary sliding (GBS) was observed in both microstructures, but the development of serrated grain boundaries significantly decreased the contribution of this mechanism to the overall strain accommodation from 20% to 14% of the total plastic strain being accommodated by GBS. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEFORMATIONS (Mechanics) KW - CRYSTAL grain boundaries KW - HEAT resistant alloys KW - STRAINS & stresses (Mechanics) KW - NICKEL alloys KW - HIGH temperature chemistry KW - Creep KW - Digital image correlation KW - Grain boundary sliding KW - Nickel-based superalloy KW - René-104 N1 - Accession Number: 95722816; Carter, Jennifer L.W. 1; Email Address: jennifer.walley@gmail.com Kuper, Michael W. 1 Uchic, Michael D. 2 Mills, Michael J. 1; Affiliation: 1: Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43202, USA 2: Air Force Research Laboratory, Materials & Manufacturing Directorate, AFRL/RXCM, Wright Patterson AFB, Dayton, OH 45433, USA; Source Info: May2014, Vol. 605, p127; Subject Term: DEFORMATIONS (Mechanics); Subject Term: CRYSTAL grain boundaries; Subject Term: HEAT resistant alloys; Subject Term: STRAINS & stresses (Mechanics); Subject Term: NICKEL alloys; Subject Term: HIGH temperature chemistry; Author-Supplied Keyword: Creep; Author-Supplied Keyword: Digital image correlation; Author-Supplied Keyword: Grain boundary sliding; Author-Supplied Keyword: Nickel-based superalloy; Author-Supplied Keyword: René-104; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.msea.2014.03.048 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95722816&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Iurov, Andrii AU - Gumbs, Godfrey AU - Bo Gao AU - Danhong Huang T1 - Modeling anisotropic plasmon excitations in self-assembled fullerenes. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/05/19/ VL - 104 IS - 20 M3 - Article SP - 1 EP - 5 PB - American Institute of Physics SN - 00036951 AB - The plasmon excitations in Coulomb-coupled spherical two-dimensional electron gases (S2DEGs) reveal an interesting dependence on the displacement vector between the centers of the spheres with respect to the axis of quantization for the angular momentum quantum number L. Specifically, plasmon modes for a bundle of three S2DEGs have been obtained within the random-phase approximation. The inter-sphere Coulomb interaction matrix elements and their symmetry properties were also investigated in detail. The case of a bundle gives an adequate picture of the way in which the Coulomb interaction depends on the orbital angular momentum quantum number L and its projection M. We concluded that the interaction between the S2DEGs aligned at an angle of 45° with the axis of quantization is negligible compared to the interaction along and perpendicular to the quantization axis, which are themselves unequal to each other. Consequently, the plasmon excitation frequencies reveal an interesting orientational anisotropic coupling to an external electromagnetic field probing the charge density oscillations. Our result on the spatial correlation may be experimentally observable. In this connection, there have already been some experimental reports pointing to a similar effect in nanoparticles. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR self-assembly KW - PLASMONS (Physics) KW - ELECTRON gas KW - ELECTRONIC excitation KW - COULOMB functions KW - QUANTIZATION methods (Quantum mechanics) N1 - Accession Number: 96206433; Iurov, Andrii 1; Email Address: theorist.physics@gmail.com Gumbs, Godfrey 2 Bo Gao 1 Danhong Huang 2; Affiliation: 1: Department of Physics and Astronomy, Hunter College of City University of New York, 695 Park Avenue, New York, New York 10065, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA; Source Info: 5/19/2014, Vol. 104 Issue 20, p1; Subject Term: MOLECULAR self-assembly; Subject Term: PLASMONS (Physics); Subject Term: ELECTRON gas; Subject Term: ELECTRONIC excitation; Subject Term: COULOMB functions; Subject Term: QUANTIZATION methods (Quantum mechanics); Number of Pages: 5p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.4878399 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96206433&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Esguerra, David F. AU - Hoffman, Wesley P. AU - Thies, Mark C. T1 - Molecular structures of the constituents of pyrene pitches. JO - Fuel JF - Fuel Y1 - 2014/05/15/ VL - 124 M3 - Article SP - 133 EP - 140 SN - 00162361 AB - Highlights: [•] The dimeric species in pyrene pitches produced thermally and with AlCl3 were identified. [•] Supercritical/solvent extraction and RP-HPLC were used to facilitate characterization. [•] Two alternant and two non-alternant pyrene dimer isomers were found in both pitches. [•] Methylated species were detected only in the pitch produced catalytically. [ABSTRACT FROM AUTHOR] AB - Copyright of Fuel is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PYRENE (Chemical) KW - PITCH (Resin) KW - MOLECULAR structure KW - SUPERCRITICAL fluid extraction KW - ALUMINUM chloride KW - HIGH performance liquid chromatography KW - HPLC/UV–vis spectroscopy KW - Large polycyclic aromatic hydrocarbons KW - MALDI mass spectrometry KW - Pyrene pitch KW - Supercritical extraction N1 - Accession Number: 94794258; Esguerra, David F. 1 Hoffman, Wesley P. 2 Thies, Mark C. 1; Email Address: mcths@clemson.edu; Affiliation: 1: Department of Chemical and Biomolecular Engineering, Center for Advanced Engineering Fibers and Films, Clemson University, Clemson, SC 29634-0909, USA 2: Air Force Research Laboratory, AFRL/RQRC, 10 E. Saturn Blvd., Edwards, CA 93524-7680, USA; Source Info: May2014, Vol. 124, p133; Subject Term: PYRENE (Chemical); Subject Term: PITCH (Resin); Subject Term: MOLECULAR structure; Subject Term: SUPERCRITICAL fluid extraction; Subject Term: ALUMINUM chloride; Subject Term: HIGH performance liquid chromatography; Author-Supplied Keyword: HPLC/UV–vis spectroscopy; Author-Supplied Keyword: Large polycyclic aromatic hydrocarbons; Author-Supplied Keyword: MALDI mass spectrometry; Author-Supplied Keyword: Pyrene pitch; Author-Supplied Keyword: Supercritical extraction; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.fuel.2014.01.093 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94794258&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Thomas M. AU - Shuman, Nicholas S. AU - Viggiano, Albert A. T1 - Arrhenius behavior of electron attachment to CH3Br from 303 to 1100K. JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2014/05/15/ VL - 365-366 M3 - Article SP - 75 EP - 79 SN - 13873806 AB - Highlights: [•] Electron attachment to CH3Br was studied for temperatures 303–1100K. [•] The reaction yields only Br− ion product for temperatures 303–1100K. [•] The CH3Br electron attachment reaction closely follows Arrhenius behavior. [•] Kinetic modeling is found to have limited usefulness for CH3Br attachment. [•] The Ar+ +CH3Br reaction was studied at 302K, yielding CH3+ and CH2Br+. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARRHENIUS equation KW - ELECTRONS KW - BROMOMETHANE KW - TEMPERATURE effect KW - CHEMICAL reactions KW - IONS -- Analysis KW - Electron attachment KW - Kinetic modeling KW - Methyl bromide KW - Rate constant KW - Temperature dependence N1 - Accession Number: 96247484; Miller, Thomas M. 1 Shuman, Nicholas S. 1 Viggiano, Albert A. 1; Email Address: albert.viggiano@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, NM 87117-5776, USA; Source Info: May2014, Vol. 365-366, p75; Subject Term: ARRHENIUS equation; Subject Term: ELECTRONS; Subject Term: BROMOMETHANE; Subject Term: TEMPERATURE effect; Subject Term: CHEMICAL reactions; Subject Term: IONS -- Analysis; Author-Supplied Keyword: Electron attachment; Author-Supplied Keyword: Kinetic modeling; Author-Supplied Keyword: Methyl bromide; Author-Supplied Keyword: Rate constant; Author-Supplied Keyword: Temperature dependence; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.ijms.2013.12.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96247484&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, H Sam AU - Ganguli, Sabyasachi AU - Roy, Ajit K T1 - Prediction of the transverse thermal conductivity of pitch-based carbon fibers. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2014/05/15/ VL - 48 IS - 11 M3 - Article SP - 1383 EP - 1390 SN - 00219983 AB - In this paper, we utilized a bottom-up method to predict the transverse thermal conductivity of pitched-based carbon fibers. We used molecular dynamics simulations with Green-Kubo formalism to calculate the in-plane thermal conductivity and out-of-plane thermal conductivity of the graphite sheets. The effects of waviness on the thermal conductivity of the graphite sheets were studied by MD simulations. The calculated in-plane thermal conductivity and out-of-plane thermal conductivity of graphite sheets from MD simulations were then used for the prediction of transverse thermal conductivity of the pitch fibers by finite element method. In the finite element simulations, the waviness in the graphite sheets was found to decrease the transverse thermal conductivity of pitch fibers, though not significantly. The defects observed in the pitch fibers were simulated by the damage elements in the finite element analysis. The simulation results showed that the proposed model, in which 12.5% of damage was included, predicted the effective transverse thermal conductivity well compared to the value measured from experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL conductivity KW - THERMAL conductivity measurement KW - CARBON fibers KW - MOLECULAR dynamics KW - SIMULATION methods & models KW - FINITE element method KW - finite element KW - molecular dynamics simulations KW - Pitch fiber KW - thermal conductivity N1 - Accession Number: 95970228; Huang, H Sam 1 Ganguli, Sabyasachi 2 Roy, Ajit K 3; Affiliation: 1: Nanoelectronic Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, OH, USA, Universal Technology Corporation, Dayton, OH, USA 2: Nanoelectronic Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, OH, USA, University of Dayton Research Institute, Dayton, OH, USA 3: Nanoelectronic Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, OH, USA; Source Info: May2014, Vol. 48 Issue 11, p1383; Subject Term: THERMAL conductivity; Subject Term: THERMAL conductivity measurement; Subject Term: CARBON fibers; Subject Term: MOLECULAR dynamics; Subject Term: SIMULATION methods & models; Subject Term: FINITE element method; Author-Supplied Keyword: finite element; Author-Supplied Keyword: molecular dynamics simulations; Author-Supplied Keyword: Pitch fiber; Author-Supplied Keyword: thermal conductivity; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 8p; Document Type: Article; Full Text Word Count: 3700 L3 - 10.1177/0021998313486501 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95970228&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lukishova, Svetlana G. AU - Winkler, Justin M. AU - Bissell, Luke J. T1 - Quantum Dot Fluorescence in Photonic Bandgap Glassy Cholesteric Liquid Crystal Structures: Microcavity Resonance under CW-Excitation, Antibunching and Decay Time. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2014/05/15/ VL - 595 IS - 1 M3 - Article SP - 98 EP - 105 SN - 15421406 AB - Nanocrystal quantum dot (NQD) fluorescence in 1-D glassy cholesteric liquid crystal host is investigated: (1) Microcavity resonance is obtained under cw-excitation demonstrating coupling between NQD fluorescence and a cholesteric microcavity. Observed at a band edge of a photonic stopband, this resonance has circular polarization due to microcavity chirality with 4.9 times intensity enhancement in comparison with polarization of the opposite handedness. (2) Photon antibunching of a single NQD in a similar microcavity was observed. (3) Fluorescence decay time constants were measured at different excitation powers. These results are important in developing cholesteric lasers and single-photon sources for secure quantum communication. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM dots KW - FLUORESCENCE KW - PHOTONIC band gap structures KW - CHOLESTERIC liquid crystals KW - CRYSTAL structure KW - METALLIC glasses KW - NANOCRYSTALS KW - CHIRALITY KW - antibunching KW - lasing in cholesteric liquid crystals KW - microcavity resonance KW - Quantum dot fluorescence decay N1 - Accession Number: 98605296; Lukishova, Svetlana G. 1 Winkler, Justin M. 2 Bissell, Luke J. 3; Affiliation: 1: The Institute of Optics, University of Rochester, Rochester, NY, USA 2: Department of Physics and Astronomy, University of Rochester, Rochester, NY, USA 3: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Source Info: May2014, Vol. 595 Issue 1, p98; Subject Term: QUANTUM dots; Subject Term: FLUORESCENCE; Subject Term: PHOTONIC band gap structures; Subject Term: CHOLESTERIC liquid crystals; Subject Term: CRYSTAL structure; Subject Term: METALLIC glasses; Subject Term: NANOCRYSTALS; Subject Term: CHIRALITY; Author-Supplied Keyword: antibunching; Author-Supplied Keyword: lasing in cholesteric liquid crystals; Author-Supplied Keyword: microcavity resonance; Author-Supplied Keyword: Quantum dot fluorescence decay; Number of Pages: 8p; Document Type: Article L3 - 10.1080/15421406.2014.917795 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98605296&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rumi, Mariacristina AU - Tondiglia, Vincent P. AU - Natarajan, Lalgudi V. AU - White, Timothy J. AU - Bunning, Timothy J. T1 - Local Optical Spectra and Texture for Chiral Nematic Liquid Crystals in Cells with Interdigitated Electrodes. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2014/05/15/ VL - 595 IS - 1 M3 - Article SP - 123 EP - 135 SN - 15421406 AB - A microspectrophotometer was used to measure reflection spectra of cholesteric liquid crystals (CLCs) in cells with interdigitated electrodes as a function of applied voltage in order to probe the spatial variation in behavior in the electrode and gap regions. Complex changes in the optical spectra are observed in the gap regions for cells in which the electric field magnitude changes significantly through the thickness of the cell. This leads to a non-uniform helix unwinding and pitch gradient in the cell. In cells with smaller field gradients, the unwinding occurs in a uniform manner and it is possible, under certain conditions, to distinguish discrete changes in pitch, corresponding to a decrease in the number of half-turns of the helical structure in the cell. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEMATIC liquid crystals KW - OPTICAL spectra KW - CRYSTAL texture KW - CHIRALITY KW - ELECTRODES KW - ELECTRIC potential KW - MICROSPECTROPHOTOMETERS KW - REFLECTANCE spectroscopy KW - Cholesteric liquid crystals KW - helix unwinding KW - interdigitated electrodes KW - microspectrometer N1 - Accession Number: 98605300; Rumi, Mariacristina 1,2 Tondiglia, Vincent P. 1,3 Natarajan, Lalgudi V. 1,3 White, Timothy J. 1 Bunning, Timothy J. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH, USA 2: Azimuth Corporation, Dayton, OH, USA 3: Science Applications International Corporation, Beavercreek, OH, USA; Source Info: May2014, Vol. 595 Issue 1, p123; Subject Term: NEMATIC liquid crystals; Subject Term: OPTICAL spectra; Subject Term: CRYSTAL texture; Subject Term: CHIRALITY; Subject Term: ELECTRODES; Subject Term: ELECTRIC potential; Subject Term: MICROSPECTROPHOTOMETERS; Subject Term: REFLECTANCE spectroscopy; Author-Supplied Keyword: Cholesteric liquid crystals; Author-Supplied Keyword: helix unwinding; Author-Supplied Keyword: interdigitated electrodes; Author-Supplied Keyword: microspectrometer; Number of Pages: 13p; Document Type: Article L3 - 10.1080/15421406.2014.917825 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98605300&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schultz, Peter A. AU - Edwards, Arthur H. T1 - Modeling charged defects inside density functional theory band gaps. JO - Nuclear Instruments & Methods in Physics Research Section B JF - Nuclear Instruments & Methods in Physics Research Section B Y1 - 2014/05/15/ VL - 327 M3 - Article SP - 2 EP - 8 SN - 0168583X AB - Abstract: Density functional theory (DFT) has emerged as an important tool to probe microscopic behavior in materials. The fundamental band gap defines the energy scale for charge transition energy levels of point defects in ionic and covalent materials. The eigenvalue gap between occupied and unoccupied states in conventional DFT, the Kohn–Sham gap, is often half or less of the experimental band gap, seemingly precluding quantitative studies of charged defects. Applying explicit and rigorous control of charge boundary conditions in supercells, we find that calculations of defect energy levels derived from total energy differences give accurate predictions of charge transition energy levels in Si and GaAs, unhampered by a band gap problem. The GaAs system provides a good theoretical laboratory for investigating band gap effects in defect level calculations: depending on the functional and pseudopotential, the Kohn–Sham gap can be as large as 1.1eV or as small as 0.1eV. We find that the effective defect band gap, the computed range in defect levels, is mostly insensitive to the Kohn–Sham gap, demonstrating it is often possible to use conventional DFT for quantitative studies of defect chemistry governing interesting materials behavior in semiconductors and oxides despite a band gap problem. [Copyright &y& Elsevier] AB - Copyright of Nuclear Instruments & Methods in Physics Research Section B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DENSITY functional theory KW - ENERGY gaps (Physics) KW - ENERGY levels (Quantum mechanics) KW - POINT defects KW - EIGENVALUES KW - BOUNDARY value problems KW - Band gap KW - Defects KW - Density functional theory KW - Electronic properties KW - Gallium arsenide KW - Modeling and simulation N1 - Accession Number: 95386090; Schultz, Peter A. 1; Email Address: paschul@sandia.gov Edwards, Arthur H. 2; Affiliation: 1: Advanced Device Technologies Department, Sandia National Laboratories, Albuquerque, NM 87185, USA 2: Air Force Research Laboratory, AFRL/RVSE, Kirtland Air Force Base, NM 87117, USA; Source Info: May2014, Vol. 327, p2; Subject Term: DENSITY functional theory; Subject Term: ENERGY gaps (Physics); Subject Term: ENERGY levels (Quantum mechanics); Subject Term: POINT defects; Subject Term: EIGENVALUES; Subject Term: BOUNDARY value problems; Author-Supplied Keyword: Band gap; Author-Supplied Keyword: Defects; Author-Supplied Keyword: Density functional theory; Author-Supplied Keyword: Electronic properties; Author-Supplied Keyword: Gallium arsenide; Author-Supplied Keyword: Modeling and simulation; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.nimb.2013.09.046 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95386090&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Day, Paul N. AU - Pachter, Ruth AU - Nguyen, Kiet A. T1 - Analysis of nonlinear optical properties in donor–acceptor materials. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2014/05/14/ VL - 140 IS - 18 M3 - Article SP - 184308-1 EP - 184308-13 PB - American Institute of Physics SN - 00219606 AB - Time-dependent density functional theory has been used to calculate nonlinear optical (NLO) properties, including the first and second hyperpolarizabilities as well as the two-photon absorption crosssection, for the donor-acceptor molecules p-nitroaniline and dimethylamino nitrostilbene, and for respective materials attached to a gold dimer. The CAMB3LYP, B3LYP, PBE0, and PBE exchangecorrelation functionals all had fair but variable performance when compared to higher-level theory and to experiment. The CAMB3LYP functional had the best performance on these compounds of the functionals tested. However, our comprehensive analysis has shown that quantitative prediction of hyperpolarizabilities is still a challenge, hampered by inadequate functionals, basis sets, and solvation models, requiring further experimental characterization. Attachment of the Au2S group to molecules already known for their relatively large NLO properties was found to further enhance the response. While our calculations show a modest enhancement for the first hyperpolarizability, the enhancement of the second hyperpolarizability is predicted to be more than an order of magnitude. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR analysis KW - OPTICAL properties KW - DENSITY functional theory KW - LIGHT absorption KW - ABSORPTION cross sections KW - MOLECULES N1 - Accession Number: 96049890; Day, Paul N. 1,2 Pachter, Ruth 1 Nguyen, Kiet A. 1,3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 2: General Dynamics Information Technology, Inc., Dayton, Ohio 45431, USA 3: UES, Inc., Dayton, Ohio 45432, USA; Source Info: 5/14/2014, Vol. 140 Issue 18, p184308-1; Subject Term: NONLINEAR analysis; Subject Term: OPTICAL properties; Subject Term: DENSITY functional theory; Subject Term: LIGHT absorption; Subject Term: ABSORPTION cross sections; Subject Term: MOLECULES; Number of Pages: 13p; Illustrations: 1 Diagram, 6 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.4874267 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96049890&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jordan, J. L. AU - Spowart, J. E. AU - Kendall, M. J. AU - Woodworth, B. AU - Siviour, C. R. T1 - Mechanics of particulate composites with glassy polymer binders in compression. JO - Philosophical Transactions of the Royal Society A: Mathematical, Physical & Engineering Sciences JF - Philosophical Transactions of the Royal Society A: Mathematical, Physical & Engineering Sciences Y1 - 2014/05/13/ VL - 372 IS - 2015 M3 - Article SP - 9 EP - 9 SN - 1364503X AB - Whether used as structural components in design or matrix materials for composites, the mechanical properties of polymers are increasingly important. The compressive response of extruded polymethyl methacrylate (PMMA) rod with aligned polymer chains and Al-Ni-PMMA particulate composites are investigated across a range of strain rates and temperatures. The particulate composites were prepared using an injection-moulding technique resulting in highly anisotropic microstructures. The mechanics of these materials are discussed in the light of theories of deformation for glassy polymers. The experimental data from this study are compared with PMMA results from the literature as well as epoxy-based composites with identical particulates. The PMMA exhibited the expected strain rate and temperature dependence and brittle failure was observed at the highest strain rates and lowest temperatures. The Al-Ni-PMMA composites were found to have similar stress-strain response to the PMMA with reduced strain softening after yield. Increasing volume fraction of particulates in the composite resulted in decreased strength. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Transactions of the Royal Society A: Mathematical, Physical & Engineering Sciences is the property of Royal Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS -- Research KW - MACROMOLECULES KW - COMPRESSION loads KW - STRAINS & stresses (Mechanics) KW - COMPOSITE materials KW - high strain rate KW - particulate composite KW - polymethyl methacrylate N1 - Accession Number: 95567507; Jordan, J. L. 1; Email Address: jennifer.jordan.6@us.af.mil Spowart, J. E. 2 Kendall, M. J. 3 Woodworth, B. 4 Siviour, C. R. 3; Affiliation: 1: AFOSR/RTE, Air Force Office of Scientific Research, Arlington, VA 22203, USA 2: AFRL/RXBC, Air Force Research Laboratory, Wright-Patterson AFB, FL 45433, USA 3: Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, UK 4: AFRL/RWME, Air Force Research Laboratory, Eglin AFB, FL 32542, USA; Source Info: 5/13/2014, Vol. 372 Issue 2015, p9; Subject Term: POLYMERS -- Research; Subject Term: MACROMOLECULES; Subject Term: COMPRESSION loads; Subject Term: STRAINS & stresses (Mechanics); Subject Term: COMPOSITE materials; Author-Supplied Keyword: high strain rate; Author-Supplied Keyword: particulate composite; Author-Supplied Keyword: polymethyl methacrylate; Number of Pages: 1p; Document Type: Article; Full Text Word Count: 260 L3 - 10.1098/rsta.2013.0215 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95567507&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sathish, S. AU - Welter, J. T. AU - Schehl, N. AU - Jata, K. V. T1 - Noncontact acousto-thermal evaluation of evolving fatigue damage in polycrystalline Ti-6Al-4V. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2014/05/07/ VL - 115 IS - 17 M3 - Article SP - 173509-1 EP - 173509-6 PB - American Institute of Physics SN - 00218979 AB - Non-Contact Acousto-Thermal Signature (NCATS) analysis uses conversion of acoustic energy to heat to characterize evolving damage in materials. In the past, the observed temperature changes were interpreted using phenomenological approaches. This paper presents details of the mechanisms and the theoretical models to predict the temperature change due to conversion of acoustic energy to heat. NCATS experimental measurements performed using 20 kHz high amplitude acoustic waves on as received and fatigued polycrystalline Ti-6Al-4V are compared with theoretical calculations based on the mechanisms of transverse thermal currents, inter-crystalline thermal currents, and dislocation density changes. In the as received samples, the transverse thermal currents contribution has been found to be negligible compared with inter-crystalline thermal currents contribution. The experimentally measured maximum temperature change in the as received sample has been found to be 0.5 °C, and the theoretical prediction based on inter-crystalline thermal currents is 0.08 °C. In the fatigue damaged samples, the maximum temperature change increases with increasing damage that can be attributed to the increasing dislocation density. The theoretical prediction of the maximum temperature attained by a sample that is near failure based on dislocation contribution is 2.0 °C, while the experimental measurements have been found to be 0.95 °C. The differences between the theoretical and the experimental measurements are discussed in the context of the uncertainties in several physical parameters used in the theoretical calculations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYCRYSTALLINE semiconductors KW - ACOUSTIC generators KW - WAVES (Physics) KW - CRYSTALS KW - CRYSTALLOGRAPHY N1 - Accession Number: 95982935; Sathish, S. 1 Welter, J. T. 2 Schehl, N. 1 Jata, K. V. 3; Affiliation: 1: Structural Integrity Division, University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469, USA 2: Materials State Awareness and Supportability Branch (AFRL/RXCA), Air Force Research Laboratory, 2230 Tenth St., Wright-Patterson AFB, Ohio 45433, USA 3: Metals Branch (AFRL/RXCM), Air Force Research Laboratory, 2230 Tenth St., Wright-Patterson AFB, Ohio 45433, USA; Source Info: 2014, Vol. 115 Issue 17, p173509-1; Subject Term: POLYCRYSTALLINE semiconductors; Subject Term: ACOUSTIC generators; Subject Term: WAVES (Physics); Subject Term: CRYSTALS; Subject Term: CRYSTALLOGRAPHY; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.4875098 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95982935&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Walczak, Kamil AU - Yerkes, Kirk L. T1 - Nanoscale transport of phonons: Dimensionality, subdiffusion, molecular damping, and interference effects. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2014/05/07/ VL - 115 IS - 17 M3 - Article SP - 174308-1 EP - 174308-16 PB - American Institute of Physics SN - 00218979 AB - We examine heat transport carried by acoustic phonons in the systems composed of nanoscale chains of masses coupled to two thermal baths of different temperatures. Thermal conductance is obtained by using linearized Landauer-type formula for heat flux with phonon transmission probability calculated within atomistic Green's functions (AGF) method. AGF formalism is extended onto dissipative chains of masses with harmonic coupling beyond nearest-neighbor approximation, while atomistic description of heat reservoirs is also included into computational scheme. In particular, the phonon lifetimes and the phonon frequency shifts are discussed for harmonic lattices of different dimensions. Further, resonant structure of phonon transmission spectrum is analyzed with respect to reservoir-induced effects, molecular damping, and mass-to-mass harmonic coupling. Analysis of transmission zeros (antiresonances) and their accompanied Fano-shape resonances are discussed as a result of interference effects between different vibrational modes. Finally, we also predict subdiffusive transport regime for low-frequency ballistic phonons propagated along a linear chain of harmonically coupled masses. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LATTICE dynamics KW - GREEN'S functions KW - PHONONS KW - NANOELECTROMECHANICAL systems KW - RESONANCE N1 - Accession Number: 95982967; Walczak, Kamil 1 Yerkes, Kirk L. 1; Affiliation: 1: Aerospace Systems Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: 2014, Vol. 115 Issue 17, p174308-1; Subject Term: LATTICE dynamics; Subject Term: GREEN'S functions; Subject Term: PHONONS; Subject Term: NANOELECTROMECHANICAL systems; Subject Term: RESONANCE; Number of Pages: 16p; Document Type: Article L3 - 10.1063/1.4874755 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95982967&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sanghavi, Bankim J. AU - Varhue, Walter AU - Chávez, Jorge L. AU - Chia-Fu Chou AU - Swami, Nathan S. T1 - Electrokinetic Preconcentration and Detection of Neuropeptides at Patterned Graphene-Modified Electrodes in a Nanochannel. JO - Analytical Chemistry JF - Analytical Chemistry Y1 - 2014/05/06/ VL - 86 IS - 9 M3 - Article SP - 4120 EP - 4125 SN - 00032700 AB - Neuropeptides are vital to the transmission and modulation of neurological signals, with Neuropeptide Y (NPY) and Orexin A (OXA) offering diagnostic information on stress, depression, and neurotrauma. NPY is an especially significant biomarker, since it can be noninvasively collected from sweat, but its detection has been limited by poor sensitivity, long assay times, and the inability to scale-down sample volumes. Herein, we apply electrokinetic preconcentration of the neuropeptide onto patterned graphene-modified electrodes in a nanochannel by frequency-selective dielectrophoresis for 10 s or by electrochemical adsorptive accumulation for 300 s, to enable the electrochemical detection of NPY and OXA at picomolar levels from subnanoliter samples, with sufficient signal sensitivity to avoid interferences from high levels of dopamine and ascorbic acid within biological matrices. Given die high sensitivity of the methodology within small volume samples, we envision its utility toward off-line detection from droplets collected by microanalysis for the eventual measurement of neuropeptides at high spatial and temporal resolutions. [ABSTRACT FROM AUTHOR] AB - Copyright of Analytical Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROKINETICS KW - NEUROPEPTIDES KW - ELECTRIC resistors KW - NERVE tissue proteins KW - PEPTIDES N1 - Accession Number: 96209673; Sanghavi, Bankim J. 1 Varhue, Walter 1 Chávez, Jorge L. 2 Chia-Fu Chou 3 Swami, Nathan S. 1; Email Address: nswami@virginia.edu; Affiliation: 1: Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, Virginia 22904, United States 2: Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory, Dayton, Ohio 45433, United States 3: Institute of Physics, Academia Sinica, Taipei 11529, Taiwan; Source Info: 5/6/2014, Vol. 86 Issue 9, p4120; Subject Term: ELECTROKINETICS; Subject Term: NEUROPEPTIDES; Subject Term: ELECTRIC resistors; Subject Term: NERVE tissue proteins; Subject Term: PEPTIDES; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 6p; Document Type: Article L3 - 10.1021/ac500155g UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96209673&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pérez, David AU - Wohlberg, Brendt AU - Lovell, Thomas Alan AU - Shoemaker, Michael AU - Bevilacqua, Riccardo T1 - Orbit-centered atmospheric density prediction using artificial neural networks. JO - Acta Astronautica JF - Acta Astronautica Y1 - 2014/05// VL - 98 M3 - Article SP - 9 EP - 23 SN - 00945765 AB - Abstract: At low Earth orbits, drag force is a significant source of error for propagating the motion of a spacecraft. The main factor driving the changes on the drag force is neutral density. Global atmospheric models provide estimates for the density which are significantly affected by bias due to misrepresentations of the underlying physics and limitations on the statistical models. In this work a localized predictor based on artificial neural networks is presented. Localized refers to the focus being on a specific orbit, rather than a global prediction. The predictor uses density measurements or estimates on a given orbit and a set of proxies for solar and geomagnetic activities to predict the value of the density along the future orbit of the spacecraft. The performance of the localized predictor is studied for different neural network structures, testing periods of high and low solar and geomagnetic activities and different prediction windows. Comparison with previously developed methods show substantial benefits in using artificial neural networks, both in prediction accuracy and in the potential for spacecraft onboard implementation. In fact, the proposed neural networks are computationally efficient and would be straightforward to integrate into onboard software. [Copyright &y& Elsevier] AB - Copyright of Acta Astronautica is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATMOSPHERIC density KW - PREDICTION (Logic) KW - NEURAL networks (Computer science) KW - DRAG force KW - SPACE vehicles KW - STATISTICAL models KW - EARTH (Planet) KW - ORBIT KW - Modeling KW - Neural networks KW - Thermospheric density N1 - Accession Number: 94906022; Pérez, David 1; Email Address: perezd4@rpi.edu Wohlberg, Brendt 2; Email Address: brendt@lanl.gov Lovell, Thomas Alan 3; Email Address: thomas.lovell@kirtland.af.mil Shoemaker, Michael 4; Email Address: shoemaker@lanl.gov Bevilacqua, Riccardo 5; Email Address: bevilr@rpi.edu; Affiliation: 1: Mechanical, Aerospace and Nuclear Engineering Department, Rensselaer Polytechnic Institute, JEC 1034 110 8th Street, Troy, NY 12180, USA 2: T-5, Los Alamos National Laboratory, MS-B284, Los Alamos, NM 87545, USA 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, NM, USA 4: ISR-1, Los Alamos National Laboratory, P.O. Box 1663, Mail Stop D466, Los Alamos, NM 87545, USA 5: Mechanical, Aerospace and Nuclear Engineering Department, Rensselaer Polytechnic Institute, JEC 5048 110 8th Street, Troy, NY 12180, USA; Source Info: May2014, Vol. 98, p9; Subject Term: ATMOSPHERIC density; Subject Term: PREDICTION (Logic); Subject Term: NEURAL networks (Computer science); Subject Term: DRAG force; Subject Term: SPACE vehicles; Subject Term: STATISTICAL models; Subject Term: EARTH (Planet); Subject Term: ORBIT; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Neural networks; Author-Supplied Keyword: Thermospheric density; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.actaastro.2014.01.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94906022&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Darnell III, Walter J. T1 - The Royal Air Force in Texas: Training British Pilots in Terrell during World War II. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2014/05//May/Jun2014 VL - 28 IS - 2 M3 - Book Review SP - 189 EP - 192 PB - Superintendent of Documents SN - 1555385X KW - NONFICTION KW - GREAT Britain. Royal Air Force KW - KILLEBREW, Tom KW - ROYAL Air Force in Texas: Training British Pilots in Terrell During World War II, The (Book) N1 - Accession Number: 95895994; Darnell III, Walter J. 1; Affiliation: 1: USAF, US Air Force Academy; Source Info: May/Jun2014, Vol. 28 Issue 2, p189; Subject Term: NONFICTION; Company/Entity: GREAT Britain. Royal Air Force; Reviews & Products: ROYAL Air Force in Texas: Training British Pilots in Terrell During World War II, The (Book); People: KILLEBREW, Tom; Number of Pages: 4p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95895994&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhang, Xuanru AU - Knize, Randy AU - Lu, Yalin T1 - Enhanced light absorption in thin-film tandem solar cells using a bottom metallic nanograting. JO - Applied Physics A: Materials Science & Processing JF - Applied Physics A: Materials Science & Processing Y1 - 2014/05// VL - 115 IS - 2 M3 - Article SP - 509 EP - 515 PB - Springer Science & Business Media B.V. SN - 09478396 AB - We introduced a metallic nanograting at the bottom of thin-film tandem solar cells, and carried out an investigation into the light absorption in the top and bottom cells via the electromagnetic simulation. It indicates that broadband and polarization-insensitive light absorption enhancement can be obtained in the bottom cell, while the light absorption in the top cell remains unchanged by the influence of the added metallic nanograting. An overall carrier generation enhancement reaches as much as 60 % for both incident polarizations. This absorption enhancement can survive in a wide range of the cell thickness and the nanograting geometries, which enables us to reduce the thickness of the bottom cell with minimal impact on the light absorption. Thereby, this design could reduce the solar cell production cost, and meanwhile could enhance the solar cell efficiency by decreasing the light-generated carrier recombination rate. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics A: Materials Science & Processing is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHT absorption KW - ELECTROMAGNETIC fields KW - SOLAR cells KW - METALLIC thin films KW - POLARIZATION (Electricity) KW - THICKNESS measurement N1 - Accession Number: 95711904; Zhang, Xuanru 1 Knize, Randy 2 Lu, Yalin; Email Address: yalin.lu@usafa.edu; Affiliation: 1: Advanced Applied Research Center, Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, Hefei 230026 People's Republic of China 2: Physics Department, Laser Optics Research Center, United States Air Force Academy, Colorado Springs 80840 USA; Source Info: May2014, Vol. 115 Issue 2, p509; Subject Term: LIGHT absorption; Subject Term: ELECTROMAGNETIC fields; Subject Term: SOLAR cells; Subject Term: METALLIC thin films; Subject Term: POLARIZATION (Electricity); Subject Term: THICKNESS measurement; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1007/s00339-013-8075-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95711904&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sherrill, Ryan AU - Sinclair, Andrew AU - Sinha, S. AU - Lovell, T. T1 - Time-varying transformations for Hill-Clohessy-Wiltshire solutions in elliptic orbits. JO - Celestial Mechanics & Dynamical Astronomy JF - Celestial Mechanics & Dynamical Astronomy Y1 - 2014/05// VL - 119 IS - 1 M3 - Article SP - 55 EP - 73 SN - 09232958 AB - The relative motion of chief and deputy satellites in close proximity with orbits of arbitrary eccentricity can be approximated by linearized time-periodic equations of motion. The linear time-invariant Hill-Clohessy-Wiltshire equations are typically derived from these equations by assuming the chief satellite is in a circular orbit. Two Lyapunov-Floquet transformations and an integral-preserving transformation are here presented which relate the linearized time-varying equations of relative motion to the Hill-Clohessy-Wiltshire equations in a one-to-one manner through time-varying coordinate transformations. These transformations allow the Hill-Clohessy-Wiltshire equations to describe the linearized relative motion for elliptic chief satellites. [ABSTRACT FROM AUTHOR] AB - Copyright of Celestial Mechanics & Dynamical Astronomy is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TIME-varying systems KW - ELLIPTICAL orbits KW - SOLAR system KW - FLOQUET theory KW - NATURAL satellites KW - MOTION in space KW - Lyapunov-Floquet transformation KW - Relative motion equations KW - Tschauner-Hempel equations N1 - Accession Number: 95964909; Sherrill, Ryan 1; Email Address: ryanesherrill@gmail.com Sinclair, Andrew 1 Sinha, S. 2 Lovell, T. 3; Affiliation: 1: Aerospace Engineering Department, Auburn University, 211 Davis Hall Auburn 36849 USA 2: Mechanical Engineering Department, Auburn University, 1418 Wiggins Hall Auburn 36849 USA 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, Albuquerque 87117 USA; Source Info: May2014, Vol. 119 Issue 1, p55; Subject Term: TIME-varying systems; Subject Term: ELLIPTICAL orbits; Subject Term: SOLAR system; Subject Term: FLOQUET theory; Subject Term: NATURAL satellites; Subject Term: MOTION in space; Author-Supplied Keyword: Lyapunov-Floquet transformation; Author-Supplied Keyword: Relative motion equations; Author-Supplied Keyword: Tschauner-Hempel equations; Number of Pages: 19p; Document Type: Article L3 - 10.1007/s10569-014-9543-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95964909&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Trickler, William J. AU - Lantz-McPeak, Susan M. AU - Robinson, Bonnie L. AU - Paule, Merle G. AU - Slikker, William AU - Biris, Alexandru S. AU - Schlager, John J. AU - Hussain, Saber M. AU - Kanungo, Jyotshna AU - Gonzalez, Carmen AU - Ali, Syed F. T1 - Porcine brain microvessel endothelial cells show pro-inflammatory response to the size and composition of metallic nanoparticles. JO - Drug Metabolism Reviews JF - Drug Metabolism Reviews Y1 - 2014/05// VL - 46 IS - 2 M3 - Article SP - 224 EP - 231 PB - Taylor & Francis Ltd SN - 03602532 AB - The purpose of the current studies was to determine if systemic exposure of various metallic nanoparticles differing in size and composition [silver (Ag-NPs, 25, 40 and 80 nm), copper-oxide (Cu-NPs, 40 and 60 nm) or gold (Au-NPs, 3 and 5 nm)] can induce the release of pro-inflammatory mediators that influence the restrictive nature of the blood-brain barrier (BBB) in vitro. Confluent porcine brain microvessel endothelial cells (pBMECs) (8-12 days) were treated with various metallic nanoparticles (15 μg/ml). Extracellular concentrations of pro-inflammatory mediators (IL-1β, TNFα and PGE2) were evaluated using ELISA. pBMECs were cultured in standard 12-well Transwell® inserts, and permeability was evaluated by measuring the transport of fluorescein across the pBMEC monolayers. PGE2 release following Cu-NP exposure was significantly increased when compared to the control. Similar results were observed for Ag-NPs but not Au-NPs. The secretion of TNFα and IL-1β was observed for both Cu-NPs and Ag-NPs but not in response to Au-NPs. The post-treatment time profiles of TNFα and IL-1β revealed that the IL-1β response was more persistent. The permeability ratios (exposure/control) were significantly greater following exposure to Cu-NPs or Ag-NPs, compared to Au-NPs. Together, these data suggest that the composition and size of NPs can cause significant pro-inflammatory response that can influence the integrity of the BBB. [ABSTRACT FROM AUTHOR] AB - Copyright of Drug Metabolism Reviews is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - COPPER oxide KW - ENDOTHELIAL cells KW - SWINE KW - ANIMAL experimentation KW - Blood-brain barrier KW - lipopolysaccharide (LPS) KW - metallic-colloidal nanoparticles KW - neuroinflamation KW - neurotoxicity KW - porcine brain microvessel endothelial cells N1 - Accession Number: 95677013; Trickler, William J. 1 Lantz-McPeak, Susan M. 1 Robinson, Bonnie L. 1 Paule, Merle G. 1 Slikker, William 1 Biris, Alexandru S. 2 Schlager, John J. 3 Hussain, Saber M. 3 Kanungo, Jyotshna 1 Gonzalez, Carmen 4 Ali, Syed F. 1; Affiliation: 1: Division of Neurotoxicology, National Center for Toxicological Research, US Food and Drug Administration Jefferson, AR USA 2: Nanotechnology Center, University of Arkansas at Little Rock Little Rock, AR USA 3: Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force Research Laboratory Wright-Patterson AFB, OH USA 4: Laboratorio de Fisiologia Celular, Facultad de Ciencias Quimicas, Universidad Autonoma de San Luis Potosi San Luis Potosi, SLP Mexico; Source Info: May2014, Vol. 46 Issue 2, p224; Subject Term: NANOPARTICLES; Subject Term: COPPER oxide; Subject Term: ENDOTHELIAL cells; Subject Term: SWINE; Subject Term: ANIMAL experimentation; Author-Supplied Keyword: Blood-brain barrier; Author-Supplied Keyword: lipopolysaccharide (LPS); Author-Supplied Keyword: metallic-colloidal nanoparticles; Author-Supplied Keyword: neuroinflamation; Author-Supplied Keyword: neurotoxicity; Author-Supplied Keyword: porcine brain microvessel endothelial cells; NAICS/Industry Codes: 424520 Livestock Merchant Wholesalers; NAICS/Industry Codes: 112210 Hog and Pig Farming; NAICS/Industry Codes: 411110 Live animal merchant wholesalers; Number of Pages: 8p; Document Type: Article L3 - 10.3109/03602532.2013.873450 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95677013&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varma, Sashank AU - Hale, John Tracy AU - Gluck, Kevin T1 - The subjective meaning of cognitive architecture: a Marrian analysis. JO - Frontiers in Psychology JF - Frontiers in Psychology Y1 - 2014/05// VL - 5 M3 - Article SP - 1 EP - 9 SN - 16641078 AB - Marr famously decomposed cognitive theories into three levels. Newell, Pylyshyn, and Anderson offered parallel decompositions of cognitive architectures, which are psychologically plausible computational formalisms for expressing computational models of cognition.These analyses focused on the objective meaning of each level ? how it supports computational models that correspond to cognitive phenomena. This paper develops a complementary analysis of the subjective meaning of each level ? how it helps cognitive scientists understand cognition. It then argues against calls to eliminatively reduce higher levels to lower levels, for example, in the name of parsimony. Finally, it argues that the failure to attend to the multiple meanings and levels of cognitive architecture contributes to the current, disunified state of theoretical cognitive science. [ABSTRACT FROM AUTHOR] AB - Copyright of Frontiers in Psychology is the property of Frontiers Media S.A. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COGNITION KW - COMPUTATIONAL neuroscience KW - PARSIMONY (Statistics) KW - DECOMPOSITION (Mathematics) KW - PLAUSIBILITY (Logic) KW - cognitive architecture KW - computational models KW - identifiability KW - parsimony KW - reduction KW - unified theories of cognition N1 - Accession Number: 96375910; Varma, Sashank 1; Email Address: sashank@umn.edu Hale, John Tracy 2 Gluck, Kevin 3; Affiliation: 1: Department of Educational Psychology, University of Minnesota, Minneapolis, MN, USA 2: Cornell University, USA 3: Air Force Research Laboratory, USA; Source Info: May2014, Vol. 5, p1; Subject Term: COGNITION; Subject Term: COMPUTATIONAL neuroscience; Subject Term: PARSIMONY (Statistics); Subject Term: DECOMPOSITION (Mathematics); Subject Term: PLAUSIBILITY (Logic); Author-Supplied Keyword: cognitive architecture; Author-Supplied Keyword: computational models; Author-Supplied Keyword: identifiability; Author-Supplied Keyword: parsimony; Author-Supplied Keyword: reduction; Author-Supplied Keyword: unified theories of cognition; Number of Pages: 9p; Document Type: Article L3 - 10.3389/fpsyg.2014.00440 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96375910&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Elabd, S. AU - Balasubramanian, S. AU - Wu, Q. AU - Quach, T. AU - Mattamana, A. AU - Khalil, W. T1 - Analytical and Experimental Study of Wide Tuning Range mm-Wave CMOS LC-VCOs. JO - IEEE Transactions on Circuits & Systems. Part I: Regular Papers JF - IEEE Transactions on Circuits & Systems. Part I: Regular Papers Y1 - 2014/05// VL - 61 IS - 5 M3 - Article SP - 1343 EP - 1354 SN - 15498328 AB - The unprecedented interest in high bandwidth applications in the mm-wave range has set off a wave of research exploring techniques that enable wide tuning range voltage-controlled oscillators (VCOs). Low frequency CMOS LC-VCOs (< 10 GHz) have been well studied in the literature and several approaches have been developed to optimize their performance. However, there lie several interesting challenges in the mm-wave space, specifically close to the f_T/f\max, that motivate the need for analyzing the tuning range and phase noise in mm-wave VCOs. This paper presents a detailed analysis of the ultimate performance bound in simultaneously achieving low phase noise and wide tuning range in CMOS VCOs. The analysis is conducted on a 130 nm CMOS process, and confirmed by measurement results on three VCOs at 26 GHz, 34 GHz and 40 GHz. Finally, the impact of CMOS technology scaling (from 130 nm down to 45 nm), on the achievable performance bounds is analyzed and presented. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Circuits & Systems. Part I: Regular Papers is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPLEMENTARY metal oxide semiconductors KW - VOLTAGE-controlled oscillators KW - TUNING (Electronics) KW - WAVE analysis KW - PERFORMANCE evaluation KW - ELECTRIC oscillators KW - Capacitance KW - CMOS KW - CMOS integrated circuits KW - Inductors KW - LC-VCOs KW - mm-Wave VCOs KW - Switches KW - technology scaling KW - Tuning KW - tuning range analysis KW - varactors KW - Voltage-controlled oscillators KW - wide tuning range N1 - Accession Number: 98013668; Elabd, S. 1 Balasubramanian, S. 2 Wu, Q. 3 Quach, T. 4 Mattamana, A. 4 Khalil, W. 1; Affiliation: 1: Department of Electrical and Computer Engineering, The Ohio State University, Columbus, OH, USA 2: Texas Instruments, Dallas, TX, USA 3: Apple Inc., Cupertino, CA, USA 4: Air Force Research Laboratory, Sensors Directorate, WrightPatterson Air Force Base, OH, USA; Source Info: May2014, Vol. 61 Issue 5, p1343; Subject Term: COMPLEMENTARY metal oxide semiconductors; Subject Term: VOLTAGE-controlled oscillators; Subject Term: TUNING (Electronics); Subject Term: WAVE analysis; Subject Term: PERFORMANCE evaluation; Subject Term: ELECTRIC oscillators; Author-Supplied Keyword: Capacitance; Author-Supplied Keyword: CMOS; Author-Supplied Keyword: CMOS integrated circuits; Author-Supplied Keyword: Inductors; Author-Supplied Keyword: LC-VCOs; Author-Supplied Keyword: mm-Wave VCOs; Author-Supplied Keyword: Switches; Author-Supplied Keyword: technology scaling; Author-Supplied Keyword: Tuning; Author-Supplied Keyword: tuning range analysis; Author-Supplied Keyword: varactors; Author-Supplied Keyword: Voltage-controlled oscillators; Author-Supplied Keyword: wide tuning range; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TCSI.2014.2309862 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98013668&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gao, Yuan AU - Zardareh, Saba Zare AU - Yang, Xi AU - Nan, Tian Xiang AU - Zhou, Zi Yao AU - Onabajo, Marvin AU - Liu, Ming AU - Aronow, Andrew AU - Mahalingam, Krishnamurthy AU - Howe, Brandon M. AU - Brown, Gail J. AU - Sun, Nian X. T1 - Significantly Enhanced Inductance and Quality Factor of GHz Integrated Magnetic Solenoid Inductors With FeGaB/ Al2O3 Multilayer Films. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices Y1 - 2014/05// VL - 61 IS - 5 M3 - Article SP - 1470 EP - 1476 SN - 00189383 AB - We report new high quality factor (Q) integrated GHz magnetic inductors based on solenoid structures with FeGaB/ Al2O3 multilayer films, which show significantly enhanced inductance and quality factor at GHz frequencies over their air core counterparts. These inductors show an excellent high-frequency performance with a wide operation frequency range 0.5–2.5 GHz, in which the inductance is flat and the peak quality factor can reach \sim20 . The inductance of the magnetic inductor shows >100\% enhancement compared with that of the same size air core inductor. These novel GHz inductors with high inductance and Q enhancement show great promise for applications in radio frequency integrated circuits. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC induction KW - ELECTRIC inductance KW - QUALITY factor KW - SOLENOIDS KW - IRON compounds KW - ALUMINUM oxide KW - MULTILAYERS KW - MAGNETIC anisotropy KW - FeGaB KW - high Q KW - Inductance KW - Inductors KW - integrated magnetic inductor KW - Magnetic anisotropy KW - Magnetic cores KW - Magnetic multilayers KW - multilayer film KW - Q-factor KW - Radio frequency KW - radio frequency (RF) application KW - solenoid N1 - Accession Number: 95697115; Gao, Yuan 1 Zardareh, Saba Zare 1 Yang, Xi 2 Nan, Tian Xiang 1 Zhou, Zi Yao 1 Onabajo, Marvin 1 Liu, Ming 3 Aronow, Andrew 3 Mahalingam, Krishnamurthy 3 Howe, Brandon M. 3 Brown, Gail J. 3 Sun, Nian X. 1; Affiliation: 1: Department of Electrical and Computer Engineering, Boston, MA, USA 2: Electrical Engineering Department, Los Angeles, CA, USA 3: Air Force Research Laboratory, Force Base, OH, USA; Source Info: May2014, Vol. 61 Issue 5, p1470; Subject Term: MAGNETIC induction; Subject Term: ELECTRIC inductance; Subject Term: QUALITY factor; Subject Term: SOLENOIDS; Subject Term: IRON compounds; Subject Term: ALUMINUM oxide; Subject Term: MULTILAYERS; Subject Term: MAGNETIC anisotropy; Author-Supplied Keyword: FeGaB; Author-Supplied Keyword: high Q; Author-Supplied Keyword: Inductance; Author-Supplied Keyword: Inductors; Author-Supplied Keyword: integrated magnetic inductor; Author-Supplied Keyword: Magnetic anisotropy; Author-Supplied Keyword: Magnetic cores; Author-Supplied Keyword: Magnetic multilayers; Author-Supplied Keyword: multilayer film; Author-Supplied Keyword: Q-factor; Author-Supplied Keyword: Radio frequency; Author-Supplied Keyword: radio frequency (RF) application; Author-Supplied Keyword: solenoid; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TED.2014.2313095 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95697115&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mezulis, Amy AU - Salk, Rachel AU - Hyde, Janet AU - Priess-Groben, Heather AU - Simonson, Jordan T1 - Affective, Biological, and Cognitive Predictors of Depressive Symptom Trajectories in Adolescence. JO - Journal of Abnormal Child Psychology JF - Journal of Abnormal Child Psychology Y1 - 2014/05// VL - 42 IS - 4 M3 - Article SP - 539 EP - 550 SN - 00910627 AB - Heterogeneity in the longitudinal course of depressive symptoms was examined using latent growth mixture modeling among a community sample of 382 U.S. youth from ages 11 to 18 (52.1 % female). Three latent trajectory classes were identified: Stable Low (51 %; displayed low depressive symptoms at all assessments), Increasing (37 %; reported low depressive symptoms at age 11, but then significantly higher depressive symptoms than the Stable Low class at ages 13, 15, and 18), and Early High (12 %; reported high early depressive symptoms at age 11, followed by symptoms that declined over time yet remained significantly higher than those of the Stable Low class at ages 13, 15, and 18). By age 15, rates of Major Depressive Disorder diagnoses among the Early High (25.0 %) and Increasing (20.4 %) classes were more than twice that observed among the Stable Low class (8.8 %). Affective (negative affectivity), biological (pubertal timing, sex) and cognitive (cognitive style, rumination) factors were examined as predictors of class membership. Results indicated general risk factors for both high-risk trajectories as well as specific risk factors unique to each trajectory. Being female and high infant negative affectivity predicted membership in the Increasing class. Early puberty, high infant negative affectivity for boys, and high rumination for girls predicted membership in the Early High class. Results highlight the importance of examining heterogeneity in depression trajectories in adolescence as well as simultaneously considering risk factors across multiple domains. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Abnormal Child Psychology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HETEROGENEITY KW - MENTAL depression KW - TEENAGERS -- United States KW - COGNITION KW - PUBERTY KW - Adolescence KW - Cognitive risk factors KW - Depression KW - Puberty KW - Temperament KW - Trajectories N1 - Accession Number: 95393196; Mezulis, Amy 1; Email Address: mezulis@spu.edu Salk, Rachel 2; Email Address: rsalk@wisc.edu Hyde, Janet 2; Email Address: jshyde@wisc.edu Priess-Groben, Heather 3; Email Address: heather.groben@simpson.edu Simonson, Jordan 4; Email Address: jordan.simonson.1@us.af.mil; Affiliation: 1: Department of Clinical Psychology, Seattle Pacific University, Seattle USA 2: Department of Psychology, University of Wisconsin - Madison, Madison USA 3: Simpson College, Indianola Iowa 4: Shriever Air Force Base, United States Air Force, Colorado Springs USA; Source Info: May2014, Vol. 42 Issue 4, p539; Subject Term: HETEROGENEITY; Subject Term: MENTAL depression; Subject Term: TEENAGERS -- United States; Subject Term: COGNITION; Subject Term: PUBERTY; Author-Supplied Keyword: Adolescence; Author-Supplied Keyword: Cognitive risk factors; Author-Supplied Keyword: Depression; Author-Supplied Keyword: Puberty; Author-Supplied Keyword: Temperament; Author-Supplied Keyword: Trajectories; Number of Pages: 12p; Illustrations: 6 Charts, 1 Graph; Document Type: Article L3 - 10.1007/s10802-013-9812-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95393196&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, P. C. AU - Ritz, Erich AU - Lindsley, Ned T1 - Nonlinear Flutter Analysis for the Scaled F-35 with Horizontal-Tail Free Play. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2014/05//May/Jun2014 VL - 51 IS - 3 M3 - Article SP - 883 EP - 889 SN - 00218669 AB - A nonlinear tlutter analysis is performed to study the limit-cycle-oscillation characteristics of an F-35 wind-tunnel model with horizontal-tail free-play effects using a direct simulation method. The result of this study is first validated with the wind-tunnel data. Then, a set of free-play design charts is generated to investigate the limit-cycle-oscillation-occurrence domain at various free-play angles and hinge moments of the horizontal tail. It is found that, as long as the horizontal tail is unloaded, the limit-cycle oscillation is inevitable even with a very small free-play angle. Furthermore, the free-play angle cannot be the only significant parameter involved in the free-play criteria. Therefore, it is suggested that an improved military specification for free-play limits of all-movable control surfaces be established. This effort will make a substantial impact on the control-surface design that may lead to a paradigm shift in the design criteria of aircraft structure. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUTTER (Aerodynamics) KW - RESEARCH KW - NONLINEAR oscillations KW - LIMIT cycles KW - F-35 (Military aircraft) KW - JET fighter planes -- Wind tunnel testing N1 - Accession Number: 96976273; Chen, P. C. 1; Email Address: PC@zonatech.com Ritz, Erich 1; Email Address: Erich@zonatech.com Lindsley, Ned 2; Email Address: Ned.Lindsley@wpafb.af.mil; Affiliation: 1: ZONA Technology, Scottsdale, Arizona 85258 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: May/Jun2014, Vol. 51 Issue 3, p883; Subject Term: FLUTTER (Aerodynamics); Subject Term: RESEARCH; Subject Term: NONLINEAR oscillations; Subject Term: LIMIT cycles; Subject Term: F-35 (Military aircraft); Subject Term: JET fighter planes -- Wind tunnel testing; Number of Pages: 7p; Document Type: Article L3 - 10.2514/1.C032501 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96976273&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanford, Bret AU - Beran, Philip AU - Bhatia, Manav T1 - Aeroelastic Topology Optimization of Blade-Stiffened Panels. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2014/05//May/Jun2014 VL - 51 IS - 3 M3 - Article SP - 938 EP - 944 SN - 00218669 AB - Metallic blade-stiffened panels are optimized for various eigenvalue metrics of interest to the aerospace community. This is done via solid isotropic material with penalization-based topology optimization: the stiffeners are discretized into finite elements, and each element is assigned a design variable, which may vary from 0 (void) to 1 (solid). A known issue with eigenvalue-based optimization is discontinuities due to mode switching, which may be avoided through a series of eigenvalue separation constraints, or (more challenging, but less restrictive) a bound method with mode tracking. Both methods are demonstrated to obtain optimal stiffener topologies for panel buckling, but only the former is used for aeroelastic panel-flutter problems. Satisfactory flutter optimal results are obtained, but the work concludes with a discussion of the challenges associated with the use of a bound method for aeroelastic problems, with specific complications posed by the advent of hump modes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - RESEARCH KW - EIGENVALUES KW - BUCKLING (Mechanics) KW - FLUTTER (Aerodynamics) KW - ISOTROPIC properties N1 - Accession Number: 96976278; Stanford, Bret 1,2; Email Address: bretkennedystanford@gmail.com Beran, Philip 1; Email Address: philip.beran@wpafb.af.mil Bhatia, Manav 1; Email Address: manav.bhatia.ctr@wpafb.af.mil; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Research Engineer, Universal Technology Corporation; Source Info: May/Jun2014, Vol. 51 Issue 3, p938; Subject Term: AEROELASTICITY; Subject Term: RESEARCH; Subject Term: EIGENVALUES; Subject Term: BUCKLING (Mechanics); Subject Term: FLUTTER (Aerodynamics); Subject Term: ISOTROPIC properties; Number of Pages: 7p; Document Type: Article L3 - 10.2514/1.C032500 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96976278&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Bliss, David AU - Dupuis, Russell AU - Wang, Chris AU - Paskova, Tania AU - Qiu, Roger AU - Bhat, Raj AU - Caneau, Catherine T1 - Preface. JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2014/05// VL - 393 M3 - Editorial SP - 1 EP - 1 SN - 00220248 N1 - Accession Number: 95389779; Bliss, David 1 Dupuis, Russell 2 Wang, Chris 3 Paskova, Tania 4 Qiu, Roger 5 Bhat, Raj 6 Caneau, Catherine 6; Affiliation: 1: US Air Force Research Laboratory (retired), USA 2: Georgia Institute of Technology, USA 3: MIT Lincoln Laboratory, USA 4: North Carolina State University, USA 5: Lawrence Livermore National Laboratory, USA 6: Corning Inc., USA; Source Info: May2014, Vol. 393, p1; Number of Pages: 1p; Document Type: Editorial L3 - 10.1016/j.jcrysgro.2013.12.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95389779&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Titov, E. AU - Burt, J. AU - Josyula, E. T1 - Satellite Drag Uncertainties Associated with Atmospheric Parameter Variations at Low Earth Orbits. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2014/05//May/Jun2014 VL - 51 IS - 3 M3 - Article SP - 884 EP - 892 SN - 00224650 AB - An uncertainty qnantification and sensitivity analysis computational technique based on the Monte Carlo method has been used for CubeSat drag studies for exploring issues in satellite decommissioning. These studies included computational simulations for altitudes of 100 and 400 km using the Hypersonic Aerothermodynamic Particle code, a direct simulation Monte Carlo solver with uncertainty quantification and sensitivity analysis capabilities allowing for variation of the solver input quantities, propagation of the input parameter variations through the model, and prediction of output uncertainties, all in an automated manner. Satellite atmospheric drag was identified as the main parameter of interest because uncertainty in drag may alter the satellite orbit and influence its lifespan. This study considers relative contributions of the input and model parameter uncertainties to the resulting satellite drag uncertainty, which enable reduction of the initial parameter space to a few major contributors; these major contributions are then examined in detail. The effect of surface thermal accommodation coefficient is one of the parameters considered, and it is found that its contribution has opposite effects on the drag force in free molecular and collisional flows. The study demonstrates the ability of the numerical techniques to solve the flow cases for a specified accuracy. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DRAG (Aerodynamics) KW - RESEARCH KW - CUBESATS (Artificial satellites) KW - ARTIFICIAL satellites -- Aerodynamics KW - AEROTHERMODYNAMICS KW - ARTIFICIAL satellite re-entry KW - MONTE Carlo method N1 - Accession Number: 96678824; Titov, E. 1; Email Address: eugene.titov@sncorp.com Burt, J. 1 Josyula, E. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: May/Jun2014, Vol. 51 Issue 3, p884; Subject Term: DRAG (Aerodynamics); Subject Term: RESEARCH; Subject Term: CUBESATS (Artificial satellites); Subject Term: ARTIFICIAL satellites -- Aerodynamics; Subject Term: AEROTHERMODYNAMICS; Subject Term: ARTIFICIAL satellite re-entry; Subject Term: MONTE Carlo method; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 9p; Document Type: Article L3 - 10.25I4/1.A32686 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96678824&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cesul, B. T. AU - Mall, S. AU - Matson, L. T1 - Photometric Response of Illite After Simulated Space Exposure. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2014/05//May/Jun2014 VL - 51 IS - 3 M3 - Article SP - 983 EP - 986 SN - 00224650 AB - The article discusses a study which investigated geopolymers, a class of inorganic polymers, for use in the space environment. Topics discussed include illite formulation, simulated space environment exposure and photographic and photometric measurements. The use of atomic force microscopy to investigate the cause of the reflectance changes is also described. KW - INORGANIC polymers KW - RESEARCH KW - ILLITE KW - SPACE environment KW - PHOTOGRAMMETRY KW - ASTRONOMICAL photometry KW - ATOMIC force microscopy N1 - Accession Number: 96678836; Cesul, B. T. 1; Email Address: brandon.cesul@us.af.mil Mall, S. 1; Email Address: Shankar.Mall@afit.edu Matson, L. 2; Email Address: lawrence.matson@wpafb.af.mil; Affiliation: 1: U.S. Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433-7765 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7817; Source Info: May/Jun2014, Vol. 51 Issue 3, p983; Subject Term: INORGANIC polymers; Subject Term: RESEARCH; Subject Term: ILLITE; Subject Term: SPACE environment; Subject Term: PHOTOGRAMMETRY; Subject Term: ASTRONOMICAL photometry; Subject Term: ATOMIC force microscopy; Number of Pages: 4p; Document Type: Article L3 - 10.2514/1.A32671 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96678836&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carney, Carmen AU - Paul, Anish AU - Venugopal, Saranya AU - Parthasarathy, Triplicane AU - Binner, Jon AU - Katz, Allan AU - Brown, Peter T1 - Qualitative analysis of hafnium diboride based ultra high temperature ceramics under oxyacetylene torch testing at temperatures above 2100°C. JO - Journal of the European Ceramic Society JF - Journal of the European Ceramic Society Y1 - 2014/05// VL - 34 IS - 5 M3 - Article SP - 1045 EP - 1051 SN - 09552219 AB - Abstract: Oxidation tests were carried out on HfB2–SiC, HfB2–HfC, HfB2–WC–SiC, and HfB2–WSi2 ceramics using an oxyacetylene torch. The samples were oxidized between 2100 and 2300°C. From cross-sectional images, scale non-adherence was noted as a limiting factor in oxidation resistance. The sample with the best scale adherence was HfB2–WSi2. Factors involving scale non-adherence such as vapor pressure, coefficient of thermal expansion mismatch and phase transformations were considered. In comparing the scale adherence of the samples it was hypothesized that vapor pressure buildup is the principal contributing factor in the scale adherence differences observed among the tested samples. However, the coefficient of thermal expansion mismatch and HfO2 phase transformation cannot be neglected as contributing factors to scale non-adherence in all samples. [Copyright &y& Elsevier] AB - Copyright of Journal of the European Ceramic Society is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUALITATIVE chemical analysis KW - HAFNIUM compounds KW - HIGH temperatures KW - CERAMIC metals KW - ACETYLENE KW - OXIDATION KW - BORIDES KW - CARBIDES KW - THERMAL expansion KW - Hafnium diboride KW - Oxidation KW - Silicon carbide KW - Tungsten silicide KW - Ultra high temperature ceramics N1 - Accession Number: 93688331; Carney, Carmen 1,2; Email Address: carmen.carney.ctr@us.af.mil Paul, Anish 3 Venugopal, Saranya 3 Parthasarathy, Triplicane 1,2 Binner, Jon 3 Katz, Allan 1 Brown, Peter 4; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, United States 2: UES Inc., Dayton, OH 45432, United States 3: Department of Materials, Loughborough University, Loughborough LE11 3TU, UK 4: Defence Science and Technology Laboratory, Porton Down, Salisbury, Wiltshire SP4 0JQ, UK; Source Info: May2014, Vol. 34 Issue 5, p1045; Subject Term: QUALITATIVE chemical analysis; Subject Term: HAFNIUM compounds; Subject Term: HIGH temperatures; Subject Term: CERAMIC metals; Subject Term: ACETYLENE; Subject Term: OXIDATION; Subject Term: BORIDES; Subject Term: CARBIDES; Subject Term: THERMAL expansion; Author-Supplied Keyword: Hafnium diboride; Author-Supplied Keyword: Oxidation; Author-Supplied Keyword: Silicon carbide; Author-Supplied Keyword: Tungsten silicide; Author-Supplied Keyword: Ultra high temperature ceramics; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jeurceramsoc.2013.11.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93688331&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eilerman, Patricia A. AU - Herzog, Catherine M. AU - Luce, Beverly K. AU - Chao, Susan Y. AU - Walker, Sandra M. AU - Zarzabal, Lee A. AU - Carnahan, David H. T1 - A Comparison of Obesity Prevalence: Military Health System and United States Populations, 2009-2012. JO - Military Medicine JF - Military Medicine Y1 - 2014/05// VL - 179 IS - 5 M3 - Article SP - 462 EP - 470 PB - AMSUS SN - 00264075 AB - Overweight and obesity prevalence has increased over the past 30 years. Few studies have looked at the enrolled Military Health System (MHS) population (2.2 million per year). This descriptive study examined trends in overweight and obesity in both children and adults from fiscal years 2009 to 2012 and compared them to the U.S. population. Prevalence in MHS children decreased over time for overweight (14.2–13.8%) and obesity (11.7–10.9%). Active duty adults showed an increase in overweight prevalence (52.7–53.4%) and a decrease in obesity prevalence (18.9–18.3%). For nonactive duty, both overweight and obesity prevalence remained relatively unchanged around 33%. For both children and adults, overweight and obesity prevalence increased with age, except for obesity in the nonactive duty ≥65 subgroup. When compared to the United States by gender and age, MHS children generally had a lower overweight and obesity prevalence, active duty adults had higher overweight and lower obesity prevalence, and nonactive duty adults had comparable overweight and obesity prevalence, except for obesity in both men in the 40 to 59 subgroup and women in ≥60 subgroup. More research on the MHS population is needed to identify risk factors and modifiable health behaviors that could defeat the disease of obesity. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OBESITY in children KW - RESEARCH KW - OVERWEIGHT children KW - OVERWEIGHT persons KW - OBESITY -- Risk factors KW - DISEASE prevalence KW - DISEASES -- Causes & theories of causation N1 - Accession Number: 96010786; Eilerman, Patricia A. 1 Herzog, Catherine M. 1 Luce, Beverly K. 1 Chao, Susan Y. 1 Walker, Sandra M. 1 Zarzabal, Lee A. 1,2 Carnahan, David H. 1; Affiliation: 1: Healthcare Informatics Division, United States Air Force Medical Support Agency, 3515 S General McMullen Suite 200, San Antonio, TX 78226 2: 59th Wing/Science and Technology, 59th Medical Detachment, Wilford Hall Ambulatory Surgical Center, 2200 Bergquist Drive, Suite 200, San Antonio, TX 78226; Source Info: May2014, Vol. 179 Issue 5, p462; Subject Term: OBESITY in children; Subject Term: RESEARCH; Subject Term: OVERWEIGHT children; Subject Term: OVERWEIGHT persons; Subject Term: OBESITY -- Risk factors; Subject Term: DISEASE prevalence; Subject Term: DISEASES -- Causes & theories of causation; Number of Pages: 9p; Illustrations: 5 Charts, 2 Graphs; Document Type: Article L3 - 10.7205/MILMED-D-13-00430 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96010786&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Trippe, D. Matthew AU - Moriarty, Karen O. AU - Russell, Teresa L. AU - Carretta, Thomas R. AU - Beatty, Adam S. T1 - Development of a Cyber/Information Technology Knowledge Test for Military Enlisted Technical Training Qualification. JO - Military Psychology (American Psychological Association) JF - Military Psychology (American Psychological Association) Y1 - 2014/05// VL - 26 IS - 3 M3 - Article SP - 182 EP - 198 SN - 08995605 AB - An Armed Services Vocational Aptitude Battery (ASVAB) Review Panel, with expertise in personnel selection, job classification, psychometrics, and cognitive psychology developed recommendations for changes to the military enlistment test battery. One recommendation was to develop and evaluate a test of cyber/information and communications technology literacy to supplement current ASVAB content. This article summarizes a multiphased Cyber Test development process: (a) a review of information/computer technology literacy definitions and measures, (b) development and pilot testing of a cyber knowledge measure, (c) validation of test scores against final school grades (FSGs) for selected technical training courses, (d) development of an operational reporting metric and subgroup norms, and (e) examination of construct validity. Results indicate the Cyber Test has predictive validity versus technical training school grades and incremental validity comparable to the ASVAB technical knowledge tests when used with the ASVAB Armed Forces Qualification Test (AFQT) verbal/math composite as a baseline. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (American Psychological Association) is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFORMATION literacy KW - EVALUATION KW - MILITARY personnel -- Education KW - COMPUTERS KW - EXAMINATIONS -- Design & construction KW - INTELLECT KW - PILOT projects KW - MULTITRAIT multimethod techniques KW - RESEARCH methodology evaluation KW - Armed Services Vocational Aptitude Battery KW - cyber KW - information and communications technology KW - selection and classification KW - technical knowledge N1 - Accession Number: 103170480; Trippe, D. Matthew 1; Email Address: mtrippe@humrro.org Moriarty, Karen O. 1 Russell, Teresa L. 1 Carretta, Thomas R. 2 Beatty, Adam S. 1; Affiliation: 1: Human Resources Research Organization, Alexandria, Virginia 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio; Source Info: 2014, Vol. 26 Issue 3, p182; Subject Term: INFORMATION literacy; Subject Term: EVALUATION; Subject Term: MILITARY personnel -- Education; Subject Term: COMPUTERS; Subject Term: EXAMINATIONS -- Design & construction; Subject Term: INTELLECT; Subject Term: PILOT projects; Subject Term: MULTITRAIT multimethod techniques; Subject Term: RESEARCH methodology evaluation; Author-Supplied Keyword: Armed Services Vocational Aptitude Battery; Author-Supplied Keyword: cyber; Author-Supplied Keyword: information and communications technology; Author-Supplied Keyword: selection and classification; Author-Supplied Keyword: technical knowledge; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 334111 Electronic Computer Manufacturing; NAICS/Industry Codes: 443142 Electronics Stores; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; Number of Pages: 17p; Document Type: Article L3 - 10.1037/mil0000042 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103170480&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Held, Janet D. AU - Carretta, Thomas R. AU - Rumsey, Michael G. T1 - Evaluation of Tests of Perceptual Speed/Accuracy and Spatial Ability for Use in Military Occupational Classification. JO - Military Psychology (American Psychological Association) JF - Military Psychology (American Psychological Association) Y1 - 2014/05// VL - 26 IS - 3 M3 - Article SP - 199 EP - 220 SN - 08995605 AB - With the exception of Assembling Objects (AO), a spatial ability test used only by the Navy in enlisted occupational classification, the Armed Services Vocational Aptitude Battery (ASVAB) is academic and knowledge-based, somewhat limiting its utility for occupational classification. This article presents the case for integrating the AO test into military classification composites and for expanding the breadth of ASVAB content by including a former ASVAB speed/accuracy test, Coding Speed (CS). Empirical evidence is presented that shows AO and CS (a) increment the validity of the ASVAB in predicting training grades for a broad array of occupations, (b) reduce adverse impact defined as test score barriers for women and minorities, and (c) improve classification in terms of matching recruits to occupations. Some cognitive theory is presented to support AO and CS, as well as nonverbal reasoning and working memory tests for inclusion in or adjuncts to the ASVAB. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (American Psychological Association) is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JOB classification KW - EDUCATIONAL tests & measurements KW - MILITARY personnel KW - SPACE perception KW - adverse impact KW - assembling objects KW - ASVAB KW - classification effectiveness KW - coding speed KW - incremental validity KW - UNITED States. Navy N1 - Accession Number: 103170481; Held, Janet D. 1; Email Address: janet.held@navy.mil Carretta, Thomas R. 2 Rumsey, Michael G.; Affiliation: 1: Navy Personnel, Research, Studies, and Technology Millington, Tennessee 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio; Source Info: 2014, Vol. 26 Issue 3, p199; Subject Term: JOB classification; Subject Term: EDUCATIONAL tests & measurements; Subject Term: MILITARY personnel; Subject Term: SPACE perception; Author-Supplied Keyword: adverse impact; Author-Supplied Keyword: assembling objects; Author-Supplied Keyword: ASVAB; Author-Supplied Keyword: classification effectiveness; Author-Supplied Keyword: coding speed; Author-Supplied Keyword: incremental validity; Company/Entity: UNITED States. Navy; NAICS/Industry Codes: 928110 National Security; Number of Pages: 22p; Document Type: Article L3 - 10.1037/mil0000043 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=103170481&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Qingkun Liu AU - Jianwei Tang AU - Yuan Zhang AU - Martinez, Angel AU - Shaowei Wang AU - Sailing He AU - White, Timothy J. AU - Smalyukh, Ivan I. T1 - Shape-dependent dispersion and alignment of nonaggregating plasmonic gold nanoparticles in lyotropic and thermotropic liquid crystals. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2014/05// VL - 89 IS - 5-A M3 - Article SP - 1 EP - 10 SN - 15393755 AB - We use both lyotropic liquid crystals composed of prolate micelles and thermotropic liquid crystals made of rod-like molecules to uniformly disperse and unidirectionally align relatively large gold nanorods and other complex-shaped nanoparticles at high concentrations. We show that some of these ensuing self-assembled orientationally ordered soft matter systems exhibit polarization-dependent plasmonic properties with strongly pronounced molar extinction exceeding that previously achieved in self-assembled composites. The long-range unidirectional alignment of gold nanorods is mediated mainly by anisotropic surface anchoring interactions at the surfaces of gold nanoparticles. Polarization-sensitive absorption, scattering, and extinction are used to characterize orientations of nanorods and other nanoparticles. The experimentally measured unique optical properties of these composites, which stem from the collective plasmonic effect of the gold nanorods with long-range order in a liquid crystal matrix, are reproduced in computer simulations. A simple phenomenological model based on anisotropic surface interaction explains the alignment of gold nanorods dispersed in liquid crystals and the physical underpinnings behind our observations. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LYOTROPIC liquid crystals KW - PLASMONS (Physics) KW - GOLD nanoparticles KW - MICELLES KW - NANORODS KW - COMPOSITE materials N1 - Accession Number: 96697846; Qingkun Liu 1 Jianwei Tang 2 Yuan Zhang 1,2 Martinez, Angel 1 Shaowei Wang 2 Sailing He 2 White, Timothy J. 3 Smalyukh, Ivan I. 1,4,5; Email Address: ivan.smalyukh@colorado.edu; Affiliation: 1: Department of Physics and Materials Science and Engineering Program, University of Colorado, Boulder, Boulder, Colorado 80309, USA 2: Centre for Optical and Electromagnetic Research, Zhejiang University, Hangzhou 310058, People's Republic of China 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH, USA 4: Department of Electrical, Computer, and Energy Engineering and Liquid Crystals Materials Research Center, University of Colorado, Boulder, Boulder, Colorado 80309, USA 5: Renewable and Sustainable Energy Institute, National Renewable Energy Laboratory and University of Colorado, Boulder, Colorado 80309, USA; Source Info: May2014, Vol. 89 Issue 5-A, p1; Subject Term: LYOTROPIC liquid crystals; Subject Term: PLASMONS (Physics); Subject Term: GOLD nanoparticles; Subject Term: MICELLES; Subject Term: NANORODS; Subject Term: COMPOSITE materials; Number of Pages: 10p; Document Type: Article L3 - 10.1103/PhysRevE.89.052505 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96697846&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jantzen, Ryan T. AU - Taira, Kunihiko AU - Granlund, Kenneth O. AU - Ol, Michael V. T1 - Vortex dynamics around pitching plates. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2014/05// VL - 26 IS - 5 M3 - Article SP - 053606-1 EP - 053606-17 PB - American Institute of Physics SN - 10706631 AB - Vortex dynamics of wakes generated by rectangular aspect-ratio 2 and 4 and two dimensional pitching flat plates in free stream are examined with direct numerical simulation and water tunnel experiments. Evolution of wake vortices comprised of tip, leading-edge, and trailing-edge vortices is compared with force history for a range of pitch rates. The plate pivots about its leading edge with reduced frequency from π/8 to π/48, which corresponds to pitching over 1 to 6 chord lengths of travel. Computations have reasonable agreement with experiments, despite large differences in Reynolds number. Computations show that the tip effects are confined initially near the wing tips, but begin to strongly affect the leading-edge vortex as the motion of the plate proceeds, with concomitant effects on lift and drag history. Scaling relations based on reduced frequency are shown to collapse aerodynamic force history for the various pitch rates. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUX flow KW - COMPUTER simulation KW - REYNOLDS number KW - WATER tunnels KW - AERODYNAMICS N1 - Accession Number: 96367099; Jantzen, Ryan T. 1; Email Address: rtj09@my.fsu.edu Taira, Kunihiko 1; Email Address: ktaira@fsu.edu Granlund, Kenneth O. 2; Email Address: kenneth.granlund.1.ctr@us.af.mil Ol, Michael V. 2; Email Address: michael.ol@us.af.mil; Affiliation: 1: Department of Mechanical Engineering and Florida Center for Advanced Aero-Propulsion, Florida State University, Tallahassee, Florida 32310, USA 2: Aerospace Systems Directorate, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: May2014, Vol. 26 Issue 5, p053606-1; Subject Term: FLUX flow; Subject Term: COMPUTER simulation; Subject Term: REYNOLDS number; Subject Term: WATER tunnels; Subject Term: AERODYNAMICS; Number of Pages: 17p; Illustrations: 1 Color Photograph, 4 Diagrams, 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1063/1.4879035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96367099&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hajesfandiari, A. AU - Forliti, D. J. T1 - On the influence of internal density variations on the linear stability characteristics of planar shear layers. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2014/05// VL - 26 IS - 5 M3 - Article SP - 054102-1 EP - 054102-11 PB - American Institute of Physics SN - 10706631 AB - Planar shear layers are known to be sensitive to density variation within the vorticity region. The current study will expand on the available literature on the stability characteristics of shear layers with density variation through consideration of new regimes in terms of the velocity and density profiles. Both spatial and spatio-temporal linear analyses were considered. In addition to the maximum density change within the shear layer, the effect of density to vorticity thickness ratio, and transverse shifting of the density profile relative to the velocity profile were considered. For a shear layer experiencing combustion, these effects relate to the relative position and thickness of the flame in the shear layer. Thick density profiles have a stabilizing affect that imposes essentially a low-pass attenuator modulation on the spatial stability. The shear layer is destabilized through the presence of an intense yet thin density reduction that overlaps with the peak vorticity profile, a condition that may be present near the shear layer origination point. The velocity ratio at which the flow transitions between absolute and convective instability is dependent on the magnitude of the density reduction in the shear layer as well as the relative density profile thickness and transverse location. The results generally indicate that the instability of the planar shear layer is strongly influenced by the characteristics of the density-weighted vorticity distribution within the shear layer. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHEAR (Mechanics) KW - PLANAR motion KW - VORTEX motion KW - VELOCITY KW - DENSITY N1 - Accession Number: 96367101; Hajesfandiari, A. 1 Forliti, D. J. 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, The State University of New York at Buffalo, Buffalo, New York 14260, USA 2: Sierra Lobo, Inc., Air Force Research Laboratory, Edwards AFB, California 93524, USA; Source Info: May2014, Vol. 26 Issue 5, p054102-1; Subject Term: SHEAR (Mechanics); Subject Term: PLANAR motion; Subject Term: VORTEX motion; Subject Term: VELOCITY; Subject Term: DENSITY; Number of Pages: 11p; Illustrations: 11 Graphs; Document Type: Article L3 - 10.1063/1.4875281 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96367101&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sotnikov, V. AU - Kim, T. AU - Lundberg, J. AU - Paraschiv, I. AU - Mehlhorn, T. A. T1 - Scattering of electromagnetic waves by vortex density structures associated with interchange instability: Analytical and large scale plasma simulation results. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2014/05// VL - 21 IS - 5 M3 - Article SP - 052309-1 EP - 052309-10 PB - American Institute of Physics SN - 1070664X AB - The presence of plasma turbulence can strongly influence propagation properties of electromagnetic signals used for surveillance and communication. In particular, we are interested in the generation of low frequency plasma density irregularities in the form of coherent vortex structures. Interchange or flute type density irregularities in magnetized plasma are associated with Rayleigh-Taylor type instability. These types of density irregularities play an important role in refraction and scattering of high frequency electromagnetic signals propagating in the earth ionosphere, in high energy density physics, and in many other applications. We will discuss scattering of high frequency electromagnetic waves on low frequency density irregularities due to the presence of vortex density structures associated with interchange instability. We will also present particle-in-cell simulation results of electromagnetic scattering on vortex type density structures using the large scale plasma code LSP and compare them with analytical results. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC waves KW - PLASMA instabilities KW - PLASMA simulation KW - PLASMA turbulence KW - RAYLEIGH-Taylor instability N1 - Accession Number: 96355013; Sotnikov, V. 1 Kim, T. 1 Lundberg, J. 1 Paraschiv, I. 2 Mehlhorn, T. A. 3; Affiliation: 1: Air Force Research Laboratory (AFRL/RY), Wright Patterson AFB, Ohio 45433, USA 2: University of Nevada at Reno, Nevada 89557, USA 3: Naval Research Laboratory, Washington, District of Columbia 20375, USA; Source Info: May2014, Vol. 21 Issue 5, p052309-1; Subject Term: ELECTROMAGNETIC waves; Subject Term: PLASMA instabilities; Subject Term: PLASMA simulation; Subject Term: PLASMA turbulence; Subject Term: RAYLEIGH-Taylor instability; Number of Pages: 10p; Illustrations: 2 Diagrams, 4 Charts, 10 Graphs; Document Type: Article L3 - 10.1063/1.4879021] UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96355013&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kontur, Frederick J. AU - Terry, Nathan B. T1 - Motivating Students to Do Homework. JO - Physics Teacher JF - Physics Teacher Y1 - 2014/05// VL - 52 IS - 5 M3 - Article SP - 295 EP - 297 SN - 0031921X AB - The article discusses several aspects of motivating student for their homework. It states that some instructors make students' homework scores a significant percentage of the final course grade whereas some instructors just rely on students' intrinsic motivation to learn the course material. Information on motivation from course credit, homework quizzes and intrinsic sources is also offered. KW - MOTIVATION in education KW - HOMEWORK KW - COLLEGE teachers KW - INTRINSIC motivation KW - EDUCATIONAL tests & measurements N1 - Accession Number: 95848589; Kontur, Frederick J. 1; Email Address: Frederick.Kontur@usafa.edu Terry, Nathan B. 1; Affiliation: 1: United States Air Force Academy, USAF Academy, CO; Source Info: May2014, Vol. 52 Issue 5, p295; Subject Term: MOTIVATION in education; Subject Term: HOMEWORK; Subject Term: COLLEGE teachers; Subject Term: INTRINSIC motivation; Subject Term: EDUCATIONAL tests & measurements; Number of Pages: 3p; Document Type: Article L3 - 10.1119/1.4872413 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95848589&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jun Oh Kim AU - Zahyun Ku AU - Sanjay Krishna AU - Sang-Woo Kang AU - Sang Jun Lee AU - Young Chul Jun AU - Urbas, Augustine T1 - Simulation and analysis of grating-integrated quantum dot infrared detectors for spectral response control and performance enhancement. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2014/04/28/ VL - 115 IS - 16 M3 - Article SP - 163101-1 EP - 163101-6 PB - American Institute of Physics SN - 00218979 AB - We propose and analyze a novel detector structure for pixel-level multispectral infrared imaging. More specifically, we investigate the device performance of a grating-integrated quantum dots-in-a-well photodetector under backside illumination. Our design uses 1-dimensional grating patterns fabricated directly on a semiconductor contact layer and, thus, adds a minimal amount of additional effort to conventional detector fabrication flows. We show that we can gain wide-range control of spectral response as well as large overall detection enhancement by adjusting grating parameters. For small grating periods, the spectral responsivity gradually changes with parameters. We explain this spectral tuning using the Fabry-Perot resonance and effective medium theory. For larger grating periods, the responsivity spectra get complicated due to increased diffraction into the active region, but we find that we can obtain large enhancement of the overall detector performance. In our design, the spectral tuning range can be larger than 1 lm, and, compared to the unpatterned detector, the detection enhancement can be greater than 92% and 148% for parallel and perpendicular polarizations. Our work can pave the way for practical, easy-to-fabricate detectors, which are highly useful for many infrared imaging applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFRARED detectors KW - QUANTUM dot devices -- Testing KW - SPECTRAL sensitivity KW - RADIATION measurements KW - PARAMETER estimation N1 - Accession Number: 95862440; Jun Oh Kim 1,2 Zahyun Ku 3 Sanjay Krishna 1 Sang-Woo Kang 2 Sang Jun Lee 2 Young Chul Jun 4; Email Address: youngchul.jun@inha.ac.kr Urbas, Augustine 3; Email Address: Augustine.Urbas@wpafb.af.mil; Affiliation: 1: Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87106, USA 2: Division of Industrial Metrology, Korea Research Institute of Standards and Science, Daejeon 305-340, South Korea 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 4: Department of Physics, Inha University, Incheon 402-751, South Korea; Source Info: 2014, Vol. 115 Issue 16, p163101-1; Subject Term: INFRARED detectors; Subject Term: QUANTUM dot devices -- Testing; Subject Term: SPECTRAL sensitivity; Subject Term: RADIATION measurements; Subject Term: PARAMETER estimation; Number of Pages: 6p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1063/1.4871855 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95862440&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mehmood, F. AU - Pachter, R. T1 - Density functional theory study of chemical sensing on surfaces of single-layer MoS2 and graphene. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2014/04/28/ VL - 115 IS - 16 M3 - Article SP - 164302-1 EP - 164302-8 PB - American Institute of Physics SN - 00218979 AB - In this work, density functional theory (DFT) calculations have been used to investigate chemical sensing on surfaces of single-layer MoS2 and graphene, considering the adsorption of the chemical compounds triethylamine, acetone, tetrahydrofuran, methanol, 2,4,6-trinitrotoluene, o-nitrotoluene, o-dichlorobenzene, and 1,5-dicholoropentane. Physisorption of the adsorbates on free-standing surfaces was analyzed in detail for optimized material structures, considering various possible adsorption sites. Similar adsorption characteristics for the two surface types were demonstrated, where inclusion of a correction to the DFT functional for London dispersion was shown to be important to capture interactions at the interface of molecular adsorbate and surface. Charge transfer analyses for adsorbed free-standing surfaces generally demonstrated very small effects. However, charge transfer upon inclusion of the underlying SiO2 substrate rationalized experimental observations for some of the adsorbates considered. A larger intrinsic response for the electron-donor triethylamine adsorbed on MoS2 as compared to graphene was demonstrated, which may assist in devising chemical sensors for improved sensitivity. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DENSITY functional theory KW - RESEARCH KW - GRAPHENE KW - CHEMICAL detectors KW - MOLYBDENUM sulfides KW - TRIETHYLAMINE KW - TETRAHYDROFURAN KW - PHYSISORPTION N1 - Accession Number: 95862496; Mehmood, F. 1 Pachter, R. 1; Email Address: ruth.pachter@us.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: 2014, Vol. 115 Issue 16, p164302-1; Subject Term: DENSITY functional theory; Subject Term: RESEARCH; Subject Term: GRAPHENE; Subject Term: CHEMICAL detectors; Subject Term: MOLYBDENUM sulfides; Subject Term: TRIETHYLAMINE; Subject Term: TETRAHYDROFURAN; Subject Term: PHYSISORPTION; Number of Pages: 8p; Illustrations: 4 Diagrams, 3 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.4871687 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95862496&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Husaini, S. AU - Bedford, R. G. T1 - Graphene saturable absorber for high power semiconductor disk laser mode-locking. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/04/21/ VL - 104 IS - 16 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00036951 AB - Here, we report on the development of an antiresonant graphene-based one-dimensional structure which allows the control of linear and nonlinear device performance through optical confinement. A record average output in excess of 10W is achieved by integrating this antiresonant graphene saturable absorber mirror into a vertical-external-cavity-surface-emitting-laser at 1030 nm, which leads to strong evidence of mode-locking, generating pulses with energies up to 2.8 nJ and a pulsewidth of 353 fs. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR lasers KW - GRAPHENE -- Electric properties KW - SURFACE emitting lasers KW - OPTOELECTRONICS KW - LASER cavity resonators N1 - Accession Number: 95775726; Husaini, S. 1,2 Bedford, R. G. 2; Email Address: robert.bedford@us.af.mil; Affiliation: 1: Wyle, Beavercreek, Ohio 45431, USA 2: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 4/21/2014, Vol. 104 Issue 16, p1; Subject Term: SEMICONDUCTOR lasers; Subject Term: GRAPHENE -- Electric properties; Subject Term: SURFACE emitting lasers; Subject Term: OPTOELECTRONICS; Subject Term: LASER cavity resonators; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 4p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.4872258 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95775726&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O.N. AU - Senkova, S.V. AU - Woodward, C. T1 - Effect of aluminum on the microstructure and properties of two refractory high-entropy alloys. JO - Acta Materialia JF - Acta Materialia Y1 - 2014/04/15/ VL - 68 M3 - Article SP - 214 EP - 228 SN - 13596454 AB - Abstract: The microstructure, phase composition and mechanical properties of the AlMo0.5NbTa0.5TiZr and Al0.4Hf0.6NbTaTiZr high-entropy alloys are reported. The AlMo0.5NbTa0.5TiZr alloy consists of two body-centered cubic (bcc) phases with very close lattice parameters, a 1 =326.8pm and a 2 =332.4pm. One phase was enriched with Mo, Nb and Ta and another phase was enriched with Al and Zr. The phases formed nano-lamellae modulated structure inside equiaxed grains. The alloy had a density of ρ =7.40gcm−3 and Vickers hardness H v =5.8GPa. Its yield strength was 2000MPa at 298K and 745MPa at 1273K. The Al0.4Hf0.6NbTaTiZr had a single-phase bcc structure, with the lattice parameter a =336.7pm. This alloy had a density ρ =9.05gcm−3, Vickers microhardness H v =4.9GPa, and its yield strength at 298K and 1273K was 1841MPa and 298MPa, respectively. The properties of these Al-containing alloys were compared with the properties of the parent CrMo0.5NbTa0.5TiZr and HfNbTaTiZr alloys and the beneficial effects from the Al additions on the microstructure and properties were outlined. A thermodynamic calculation of the solidification and equilibrium phase diagrams was conducted for these alloys and the calculated results were compared with the experimental data. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM KW - MICROSTRUCTURE KW - METALS -- Mechanical properties KW - SOLIDIFICATION KW - BODY-centered cubic metals KW - ENTROPY KW - Crystal structure KW - Mechanical properties KW - Microstructure KW - Phase composition KW - Refractory alloys N1 - Accession Number: 94794797; Senkov, O.N. 1; Email Address: oleg.senkov@wpafb.af.mil Senkova, S.V. 1 Woodward, C. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Apr2014, Vol. 68, p214; Subject Term: ALUMINUM; Subject Term: MICROSTRUCTURE; Subject Term: METALS -- Mechanical properties; Subject Term: SOLIDIFICATION; Subject Term: BODY-centered cubic metals; Subject Term: ENTROPY; Author-Supplied Keyword: Crystal structure; Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Phase composition; Author-Supplied Keyword: Refractory alloys; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.actamat.2014.01.029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94794797&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grabowski, Chris AU - Degnan, James H. AU - Amdahl, David J. AU - Domonkos, Matthew AU - Ruden, Edward L. AU - White, William AU - Wurden, Glen A. AU - Frese, Michael H. AU - Frese, Sherry D. AU - Camacho, Frank AU - Coffey, Sean K. AU - Kiuttu, Gerald F. AU - Kostora, Mark AU - McCullough, John AU - Sommars, Wayne AU - Lynn, Alan G. AU - Yates, Kevin AU - Bauer, Bruno S. AU - Fuelling, Stephan AU - Siemon, Richard E. T1 - Addressing Short Trapped-Flux Lifetime in High-Density Field-Reversed Configuration Plasmas in FRCHX. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2014/04/15/Apr2014 Part 2 VL - 42 IS - 5 M3 - Article SP - 1179 EP - 1188 SN - 00933813 AB - The objective of the field-reversed configuration heating experiment (FRCHX) is to obtain a better understanding of the fundamental scientific issues associated with high-energy density laboratory plasmas (HEDLPs) in strong, closed-field-line magnetic fields. These issues have relevance to such topics as magneto-inertial fusion, laboratory astrophysical research, and intense radiation sources, among others. To create HEDLP conditions, a field-reversed configuration (FRC) plasma of moderate density is first formed via reversed-field theta pinch. It is then translated into a cylindrical aluminum flux conserver (solid liner), where it is trapped between two magnetic mirrors and then compressed by the magnetically driven implosion of the solid liner. A requirement is that, once the FRC is stopped within the solid liner, the trapped flux inside the FRC must persist while the compression process is completed. With the present liner dimensions and implosion drive bank parameters, the total time required for implosion is \sim25~\mus . Lifetime measurements of recent FRCHX FRCs indicate that trapped lifetimes following capture are now approaching \sim14~\mus (and therefore, total lifetimes after formation are now approaching \sim19~\mus ). By separating the mirror and translation coil banks into two so that the mirror fields can be set lower initially, the liner compression can now be initiated 7–9 \mus before the FRC is formed. A discussion of FRC lifetime-limiting mechanisms and various experimental approaches to extending the FRC lifetime will be presented. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIELD-reversed configuration KW - RESEARCH KW - HIGH-density plasmas KW - INERTIAL confinement fusion KW - MAGNETIC confinement KW - PLASMA production KW - PLASMA (Ionized gases) -- Research KW - MAGNETIC mirrors KW - Coils KW - Discharges (electric) KW - Inertial confinement KW - magnetic confinement KW - Magnetic resonance imaging KW - Mirrors KW - plasma generation KW - plasma properties KW - plasmas KW - Probes N1 - Accession Number: 95969831; Grabowski, Chris 1 Degnan, James H. 1 Amdahl, David J. 1 Domonkos, Matthew 1 Ruden, Edward L. 1 White, William 1 Wurden, Glen A. 2 Frese, Michael H. 3 Frese, Sherry D. 3 Camacho, Frank 3 Coffey, Sean K. 3 Kiuttu, Gerald F. 4 Kostora, Mark 5 McCullough, John 5 Sommars, Wayne 5 Lynn, Alan G. 6 Yates, Kevin 7 Bauer, Bruno S. 7 Fuelling, Stephan 7 Siemon, Richard E. 7; Affiliation: 1: , Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, NM, USA 2: , Los Alamos National Laboratory, Los Alamos, NM, USA 3: , NumerEx, LLC, Albuquerque, NM, USA 4: , VariTech Services, Albuquerque, NM, USA 5: , Science Applications International Corporation, Albuquerque, NM, USA 6: Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM, USA 7: Physics Department, University of Nevada, Reno, Reno, NV, USA; Source Info: Apr2014 Part 2, Vol. 42 Issue 5, p1179; Subject Term: FIELD-reversed configuration; Subject Term: RESEARCH; Subject Term: HIGH-density plasmas; Subject Term: INERTIAL confinement fusion; Subject Term: MAGNETIC confinement; Subject Term: PLASMA production; Subject Term: PLASMA (Ionized gases) -- Research; Subject Term: MAGNETIC mirrors; Author-Supplied Keyword: Coils; Author-Supplied Keyword: Discharges (electric); Author-Supplied Keyword: Inertial confinement; Author-Supplied Keyword: magnetic confinement; Author-Supplied Keyword: Magnetic resonance imaging; Author-Supplied Keyword: Mirrors; Author-Supplied Keyword: plasma generation; Author-Supplied Keyword: plasma properties; Author-Supplied Keyword: plasmas; Author-Supplied Keyword: Probes; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TPS.2014.2305402 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95969831&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hach III, Edwin E. AU - Preble, Stefan E. AU - Elshaari, Ali W. AU - Aising, Paul M. AU - Fanto, Michael L. T1 - Scalable Hong-Ou-Mandel manifolds in quantum-optical ring resonators. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2014/04/15/ VL - 89 IS - 4-B M3 - Article SP - 1 EP - 8 SN - 10502947 AB - Quantum information processing, from cryptography to computation, based upon linear quantum-optical circuit elements relies heavily on the ability offered by the Hong-Ou-Mandel (HOM) effect to "route" photons from separate input modes into one of two common output modes. Specifically, the HOM effect accomplishes the path entanglement of two photons at a time such that no coincidences are observed in the output modes of a system exhibiting the effect. In this paper, we prove, in principle, that by operating a specific nanophotonic device properly, one can conditionally "bunch" coincident input photons in a way that is more configurable than with an ordinary 50:50 beam splitter, while maintaining the inherent scalability of such an on-chip device. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM optics KW - WAVEGUIDES KW - QUANTUM information science KW - CRYPTOGRAPHY KW - QUANTUM entanglement KW - PHOTONS N1 - Accession Number: 96106467; Hach III, Edwin E. 1 Preble, Stefan E. 2 Elshaari, Ali W. 3 Aising, Paul M. 4 Fanto, Michael L. 4; Affiliation: 1: School of Physics and Astronomy, Rochester Institute of Technology, Rochester, New York 14623, USA 2: Microsystems Engineering, Rochester Institute of Technology, Rochester, New York 14623, USA 3: Electrical and Electronic Engineering Department, University of Benghazi, Benghazi, Libya 4: Air Force Research Laboratory, Rome, New York 13441, USA; Source Info: Apr2014, Vol. 89 Issue 4-B, p1; Subject Term: QUANTUM optics; Subject Term: WAVEGUIDES; Subject Term: QUANTUM information science; Subject Term: CRYPTOGRAPHY; Subject Term: QUANTUM entanglement; Subject Term: PHOTONS; Number of Pages: 8p; Document Type: Article L3 - 10.1103/PhysRevA.89.043805 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96106467&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lei He AU - Mingxing Li AU - Urbas, Augustine AU - Bin Hu T1 - Magnetophotoluminescence line-shape narrowing through interactions between excited states in organic semiconducting materials. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2014/04/15/ VL - 89 IS - 15 M3 - Article SP - 155304-1 EP - 155304-6 SN - 10980121 AB - We find that interactions between intermolecular excited states can cause a line-shape narrowing in magnetophotoluminescence in an organic composite containing N,N-dimethylaniline and pyrene in the liquid state. The line-shape narrowing indicates that interactions between intermolecular excited states can decrease the spin-exchange interaction within intermolecular excited states. Our analysis shows that interactions between intermolecular excited states can occur through long-range Coulomb interaction, midrange spin-orbital interaction, and short-range spin interaction, with the consequence of line-shape modification in the development of magnetic field effects. Our experimental results reveal a parameter, the interactions between intermolecular excited states, involved in the development of magnetic field effects in organic semiconducting materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOLUMINESCENCE KW - SEMICONDUCTORS -- Materials KW - INTERMOLECULAR interactions KW - COULOMB potential KW - SPIN-orbit coupling constants KW - CHARGE-transfer transitions N1 - Accession Number: 96532575; Lei He 1 Mingxing Li 1 Urbas, Augustine 2 Bin Hu 1; Email Address: bhu@utk.edu; Affiliation: 1: Department of Materials Science and Engineering, University of Tennessee-Knoxville, Knoxville, Tennessee 37996, USA 2: AFRL/RXBN, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, USA; Source Info: Apr2014, Vol. 89 Issue 15, p155304-1; Subject Term: PHOTOLUMINESCENCE; Subject Term: SEMICONDUCTORS -- Materials; Subject Term: INTERMOLECULAR interactions; Subject Term: COULOMB potential; Subject Term: SPIN-orbit coupling constants; Subject Term: CHARGE-transfer transitions; Number of Pages: 6p; Document Type: Article L3 - 10.1103/PhysRevB.89.155304 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96532575&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lim, Hyung Jin AU - Sohn, Hoon AU - DeSimio, Martin P. AU - Brown, Kevin T1 - Reference-free fatigue crack detection using nonlinear ultrasonic modulation under various temperature and loading conditions. JO - Mechanical Systems & Signal Processing JF - Mechanical Systems & Signal Processing Y1 - 2014/04/04/ VL - 45 IS - 2 M3 - Article SP - 468 EP - 478 SN - 08883270 AB - Abstract: This study presents a reference-free fatigue crack detection technique using nonlinear ultrasonic modulation. When low frequency (LF) and high frequency (HF) inputs generated by two surface-mounted lead zirconate titanate (PZT) transducers are applied to a structure, the presence of a fatigue crack can provide a mechanism for nonlinear ultrasonic modulation and create spectral sidebands around the frequency of the HF signal. The crack-induced spectral sidebands are isolated using a combination of linear response subtraction (LRS), synchronous demodulation (SD) and continuous wavelet transform (CWT) filtering. Then, a sequential outlier analysis is performed on the extracted sidebands to identify the crack presence without referring any baseline data obtained from the intact condition of the structure. Finally, the robustness of the proposed technique is demonstrated using actual test data obtained from simple aluminum plate and complex aircraft fitting-lug specimens under varying temperature and loading variations. [Copyright &y& Elsevier] AB - Copyright of Mechanical Systems & Signal Processing is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE cracks KW - NONLINEAR theories KW - ULTRASONICS KW - MODULATION (Electronics) KW - TEMPERATURE effect KW - LOADS (Mechanics) KW - Fatigue crack detection KW - Nonlinear ultrasonic modulation KW - PZT KW - Reference-free damage detection KW - Temperature and loading variations N1 - Accession Number: 94305363; Lim, Hyung Jin 1 Sohn, Hoon 1; Email Address: hoonsohn@kaist.ac.kr DeSimio, Martin P. 2 Brown, Kevin 3; Affiliation: 1: Department of Civil and Environmental Engineering, KAIST, Daejeon 305-701, South Korea 2: University of Dayton Research Institute, Dayton, OH 45469, United States 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45430, United States; Source Info: Apr2014, Vol. 45 Issue 2, p468; Subject Term: FATIGUE cracks; Subject Term: NONLINEAR theories; Subject Term: ULTRASONICS; Subject Term: MODULATION (Electronics); Subject Term: TEMPERATURE effect; Subject Term: LOADS (Mechanics); Author-Supplied Keyword: Fatigue crack detection; Author-Supplied Keyword: Nonlinear ultrasonic modulation; Author-Supplied Keyword: PZT; Author-Supplied Keyword: Reference-free damage detection; Author-Supplied Keyword: Temperature and loading variations; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ymssp.2013.12.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94305363&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Taha, Haithem E. AU - Hajj, Muhammad R. AU - Beran, Philip S. T1 - State-space representation of the unsteady aerodynamics of flapping flight. JO - Aerospace Science & Technology JF - Aerospace Science & Technology Y1 - 2014/04// VL - 34 M3 - Article SP - 1 EP - 11 SN - 12709638 AB - Abstract: A state-space formulation for the aerodynamics of flapping flight is presented. The Duhamel's principle, applied in linear unsteady flows, is extended to non-conventional lift curves to capture the LEV contribution. The aspect ratio effects on the empirical formulae used to predict the static lift due to a stabilized Leading Edge Vortex (LEV) are provided. The unsteady lift due to arbitrary wing motion is generated using the static lift curve. Then, state-space representation for the unsteady lift is derived. The proposed model is validated through a comparison with direct numerical simulations of Navier–Stokes on hovering insects. A comparison with quasi-steady models that capture the LEV contribution is also performed to assess the role of unsteadiness. Similarly, a comparison with classical unsteady approaches is presented to assess the LEV dominance. Finally, a reduced-order model that is more suitable for flight dynamics and control analyses is derived from the full model. [Copyright &y& Elsevier] AB - Copyright of Aerospace Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UNSTEADY flow (Aerodynamics) KW - ORNITHOPTERS KW - LEADING edge flaps KW - DYNAMIC meteorology KW - QUASIPARTICLES (Physics) KW - STATIC pressure KW - Aspect ratio effects KW - Duhamel's principle KW - Flapping flight KW - Indicial response KW - Leading Edge Vortex KW - Unsteady aerodynamics N1 - Accession Number: 95226766; Taha, Haithem E. 1; Email Address: hezzat@vt.edu Hajj, Muhammad R. 1; Email Address: mhajj@vt.edu Beran, Philip S. 2; Email Address: philip.beran@wpafb.af.mil; Affiliation: 1: Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, United States 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, United States; Source Info: Apr2014, Vol. 34, p1; Subject Term: UNSTEADY flow (Aerodynamics); Subject Term: ORNITHOPTERS; Subject Term: LEADING edge flaps; Subject Term: DYNAMIC meteorology; Subject Term: QUASIPARTICLES (Physics); Subject Term: STATIC pressure; Author-Supplied Keyword: Aspect ratio effects; Author-Supplied Keyword: Duhamel's principle; Author-Supplied Keyword: Flapping flight; Author-Supplied Keyword: Indicial response; Author-Supplied Keyword: Leading Edge Vortex; Author-Supplied Keyword: Unsteady aerodynamics; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ast.2014.01.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95226766&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beck, Joseph A. AU - Brown, Jeffrey M. AU - Cross, Charles J. AU - Slater, Joseph C. AU - Lamont, Gary B. T1 - Framework for Creating Digital Representations of Structural Components Using Computational Intelligence Techniques. JO - AIAA Journal JF - AIAA Journal Y1 - 2014/04// VL - 52 IS - 4 M3 - Article SP - 855 EP - 866 SN - 00011452 AB - A framework for creating a digital representation of physical structural components is investigated. A model updating scheme used with an artificial neural network to map updating parameters to the error observed between simulated experimental data and an analytical model of a turbine-engine fan blade. The simulated experimental airfoil has as-manufactured geometric deviations from the nominal, design-intent geometry on which the analytical model is based. The manufacturing geometric deviations are reduced through principal component analysis, where the scores of the principal components are the unknown updating parameters. A range of acceptable scores is used to devise a design of computer experiments that provides training and testing data for the neural network. This training data is composed of principal component scores as inputs. The outputs are the calculated errors between the analytical and experimental predictions of modal properties and frequency-response functions. Minimizing these errors will result in an updated analytical model that has predictions closer to the simulated experimental data. This minimization process is done through the use of two multiobjective evolutionary algorithms. The goal is to determine if the updating process can identify the principal components used in simulating the experiment data. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEURAL networks (Computer science) -- Research KW - AEROFOILS -- Research KW - PRINCIPAL components analysis KW - RESEARCH KW - EVOLUTIONARY algorithms KW - COMPUTATIONAL intelligence N1 - Accession Number: 95474083; Beck, Joseph A. 1 Brown, Jeffrey M. 1 Cross, Charles J. 1 Slater, Joseph C. 2 Lamont, Gary B. 3; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Wright State University, Dayton, Ohio 45435 3: U.S. Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Apr2014, Vol. 52 Issue 4, p855; Subject Term: NEURAL networks (Computer science) -- Research; Subject Term: AEROFOILS -- Research; Subject Term: PRINCIPAL components analysis; Subject Term: RESEARCH; Subject Term: EVOLUTIONARY algorithms; Subject Term: COMPUTATIONAL intelligence; Number of Pages: 12p; Document Type: Article L3 - 10.2514/1.J052565 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95474083&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pour Shahid Saeed Abadi, Parisa AU - Maschmann, Matthew R. AU - Mortuza, S.M. AU - Banerjee, Soumik AU - Baur, Jeffery W. AU - Graham, Samuel AU - Cola, Baratunde A. T1 - Reversible tailoring of mechanical properties of carbon nanotube forests by immersing in solvents. JO - Carbon JF - Carbon Y1 - 2014/04// VL - 69 M3 - Article SP - 178 EP - 187 SN - 00086223 AB - Abstract: The mechanical behavior of carbon nanotube (CNT) forests soaked in three solvents – toluene, acetonitrile, and isopropanol – is examined. Effective stiffness of the structure is evaluated in the dry and wet condition by micro-indentation using a 100μm flat punch. With soaking of CNT forests in solvents, the stiffness decreases and deformation mechanism changes from buckling concentrated close to the bottom of the CNT forest to a distribution of local buckles along the height and global buckling of the entire length of CNTs. We use molecular dynamics simulations to relate the experimental observations to the reduced mechanical support from neighbor CNTs due to a decreased magnitude of van der Waals (vdW) interactions in the presence of solvents. Toluene, which produces the lowest average measured stiffness between the three solvents, produces the lowest vdW forces between individual CNTs. Furthermore, wet–dry cycling of CNT forests shows the reversibility and repeatability of change of stiffness by immersing in solvents. The results show that soaking CNT forests in solvents could be useful for applications such as interface materials where lower stiffness of CNT forests are needed and applications such as energy absorbing materials in which re-setting of stiffness is required. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - SOLVENTS KW - FORESTS & forestry KW - MATERIALS -- Mechanical properties KW - TOLUENE KW - ACETONITRILE N1 - Accession Number: 94051580; Pour Shahid Saeed Abadi, Parisa 1 Maschmann, Matthew R. 2,3 Mortuza, S.M. 4 Banerjee, Soumik 4 Baur, Jeffery W. 2 Graham, Samuel 1,5 Cola, Baratunde A. 1,5; Email Address: cola@gatech.edu; Affiliation: 1: George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, GA 30332, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright-Patterson Air Force Base, OH 45433, USA 3: Universal Technology Corporation, Beavercreek, OH 45432, USA 4: School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA 5: School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, GA 30332, USA; Source Info: Apr2014, Vol. 69, p178; Subject Term: CARBON nanotubes; Subject Term: SOLVENTS; Subject Term: FORESTS & forestry; Subject Term: MATERIALS -- Mechanical properties; Subject Term: TOLUENE; Subject Term: ACETONITRILE; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.carbon.2013.12.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94051580&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gerzeski, Roger H. AU - Sprague, Aaron AU - Hu, Jianjun AU - Fisher, Timothy S. T1 - Growth of contiguous graphite fins from thermally conductive graphite fibers. JO - Carbon JF - Carbon Y1 - 2014/04// VL - 69 M3 - Article SP - 424 EP - 436 SN - 00086223 AB - Abstract: Contiguous graphite fins can be grown with Microwave Plasma CVD from the surface of different types of thermally conductive (TC), graphite fibers. The fins grow from all fiber filaments in multiple same TC graphite fiber tow bundles. Fin morphology consists of contiguous branching graphene basal planes originating from the fiber’s surface and curling outwards regardless of the fiber’s isotropic fine crystals, onion, radial, or “Pan Am” internal morphology. A general range of conditions to grow fins of a desired length is reported. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPHITE fibers KW - THERMAL conductivity KW - FINS (Engineering) KW - CRYSTAL growth KW - MICROWAVE plasmas KW - CHEMICAL vapor deposition N1 - Accession Number: 94051606; Gerzeski, Roger H. 1; Email Address: Roger.Gerzeski@us.af.mil Sprague, Aaron 2 Hu, Jianjun 2 Fisher, Timothy S. 3; Affiliation: 1: Air Force Research Laboratory, Thermal Sciences and Materials Branch (AFRL/RXBT), 2941 Hobson Way, Wright-Patterson AFB, OH 45433-7750, United States 2: University Of Dayton Research Institute, 300 College Park, Dayton, OH 45469, United States 3: Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, United States; Source Info: Apr2014, Vol. 69, p424; Subject Term: GRAPHITE fibers; Subject Term: THERMAL conductivity; Subject Term: FINS (Engineering); Subject Term: CRYSTAL growth; Subject Term: MICROWAVE plasmas; Subject Term: CHEMICAL vapor deposition; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.carbon.2013.12.045 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94051606&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Veksler, Vladislav D. AU - Myers, Christopher W. AU - Gluck, Kevin A. T1 - SA wS u: An Integrated Model of Associative and Reinforcement Learning. JO - Cognitive Science JF - Cognitive Science Y1 - 2014/04// VL - 38 IS - 3 M3 - Article SP - 580 EP - 598 SN - 03640213 AB - Successfully explaining and replicating the complexity and generality of human and animal learning will require the integration of a variety of learning mechanisms. Here, we introduce a computational model which integrates associative learning (AL) and reinforcement learning (RL). We contrast the integrated model with standalone AL and RL models in three simulation studies. First, a synthetic grid-navigation task is employed to highlight performance advantages for the integrated model in an environment where the reward structure is both diverse and dynamic. The second and third simulations contrast the performances of the three models in behavioral experiments, demonstrating advantages for the integrated model in accounting for behavioral data. [ABSTRACT FROM AUTHOR] AB - Copyright of Cognitive Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REINFORCEMENT learning KW - LEARNING ability KW - ASSOCIATIVE learning KW - PAIRED associate learning KW - LEARNING KW - Associative learning KW - Cognitive modeling KW - Cognitive system KW - Decision making KW - Integrated models KW - Learning KW - Reinforcement learning N1 - Accession Number: 95616509; Veksler, Vladislav D. 1 Myers, Christopher W. 1 Gluck, Kevin A. 1; Affiliation: 1: Air Force Research Laboratory; Source Info: Apr2014, Vol. 38 Issue 3, p580; Subject Term: REINFORCEMENT learning; Subject Term: LEARNING ability; Subject Term: ASSOCIATIVE learning; Subject Term: PAIRED associate learning; Subject Term: LEARNING; Author-Supplied Keyword: Associative learning; Author-Supplied Keyword: Cognitive modeling; Author-Supplied Keyword: Cognitive system; Author-Supplied Keyword: Decision making; Author-Supplied Keyword: Integrated models; Author-Supplied Keyword: Learning; Author-Supplied Keyword: Reinforcement learning; Number of Pages: 19p; Document Type: Article L3 - 10.1111/cogs.12103 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95616509&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vu, Tran Manh AU - Won, Sang Hee AU - Ombrello, Timothy AU - Cha, Min Suk T1 - Stability enhancement of ozone-assisted laminar premixed Bunsen flames in nitrogen co-flow. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2014/04// VL - 161 IS - 4 M3 - Article SP - 917 EP - 926 SN - 00102180 AB - Abstract: Ozone (O3) is known as one of the strongest oxidizers and therefore is widely used in many applications. Typically in the combustion field, a combination of non-thermal plasma and combustion systems have been studied focusing on the effects of ozone on flame propagation speeds and ignition characteristics. Here, we experimentally investigated the effects of ozone on blowoff of premixed methane/air and propane/air flames over a full range of equivalence ratios at room temperature and atmospheric pressure by using a co-flow burner and a dielectric barrier discharge. The results with ozone showed that a nozzle exit jet velocity at the moment of flame blowoff (blowoff velocity) significantly increased, and flammability limits for both fuel-lean and rich mixtures were also extended. Ozone had stronger effects of percent enhancement in the blowoff velocity for off-stoichiometric mixtures, while minimum enhancements could be observed around stoichiometric conditions for both fuels showing linear positive dependence on a tested range of ozone concentration up to 3810ppm. Through chemical kinetic simulations, the experimentally observed trends of the enhancement in blowoff velocity were identified as a result of the modification of the laminar burning velocity. Two ozone decomposition pathways of O3 +N2 →O+O2 +N2 and O3 +H→O2 +OH were identified as the most controlling steps. These reactions, coupled with fuel consumption characteristics of each fuel determined the degree of promotion in laminar burning velocities, supporting experimental observations on blowoff velocities with ozone addition. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OZONE KW - LAMINAR flow KW - BUNSEN burner KW - CHEMICAL stability KW - NITROGEN KW - GAS flow KW - THERMAL plasmas KW - Blowoff velocity KW - Dielectric barrier discharge KW - Ozone KW - Plasma assisted combustion N1 - Accession Number: 94569740; Vu, Tran Manh 1 Won, Sang Hee 2 Ombrello, Timothy 3 Cha, Min Suk 1; Email Address: min.cha@kaust.edu.sa; Affiliation: 1: Clean Combustion Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia 2: Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, United States 3: Air Force Research Laboratory, Aerospace Systems Directorate, 1950 Fifth Street, Wright-Patterson AFB, OH 45433, United States; Source Info: Apr2014, Vol. 161 Issue 4, p917; Subject Term: OZONE; Subject Term: LAMINAR flow; Subject Term: BUNSEN burner; Subject Term: CHEMICAL stability; Subject Term: NITROGEN; Subject Term: GAS flow; Subject Term: THERMAL plasmas; Author-Supplied Keyword: Blowoff velocity; Author-Supplied Keyword: Dielectric barrier discharge; Author-Supplied Keyword: Ozone; Author-Supplied Keyword: Plasma assisted combustion; NAICS/Industry Codes: 339113 Surgical Appliance and Supplies Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.combustflame.2013.09.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94569740&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Weyburne, David W. T1 - New thickness and shape parameters for the boundary layer velocity profile. JO - Experimental Thermal & Fluid Science JF - Experimental Thermal & Fluid Science Y1 - 2014/04// VL - 54 M3 - Article SP - 22 EP - 28 SN - 08941777 AB - Highlights: [•] A method for describing the shape and thickness of the boundary layer is presented. [•] Method calculates parameters using simple integrals of the velocity profile. [•] The basic integral kernel is that of the displacement thickness. [•] One of the parameters foretells the beginning of the laminar–turbulent transition. [•] Another parameter shows that the transition to fully turbulent flow. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Thermal & Fluid Science is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THICKNESS measurement KW - PARAMETER estimation KW - SHAPES KW - LAMINAR flow KW - TURBULENT flow KW - AERODYNAMICS KW - Boundary layer KW - Boundary layer shape KW - Boundary layer thickness KW - Laminar–turbulent transition KW - Probability density function N1 - Accession Number: 94793274; Weyburne, David W. 1; Email Address: David.Weyburne@us.af.mil; Affiliation: 1: Air Force Research Laboratory, 2241 Avionics Circle, Wright-Patterson AFB, OH 45433, USA; Source Info: Apr2014, Vol. 54, p22; Subject Term: THICKNESS measurement; Subject Term: PARAMETER estimation; Subject Term: SHAPES; Subject Term: LAMINAR flow; Subject Term: TURBULENT flow; Subject Term: AERODYNAMICS; Author-Supplied Keyword: Boundary layer; Author-Supplied Keyword: Boundary layer shape; Author-Supplied Keyword: Boundary layer thickness; Author-Supplied Keyword: Laminar–turbulent transition; Author-Supplied Keyword: Probability density function; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.expthermflusci.2014.01.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94793274&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abdelhakim, Mai AU - Lightfoot, Leonard E. AU - Ren, Jian AU - Li, Tongtong T1 - Distributed Detection in Mobile Access Wireless Sensor Networks under Byzantine Attacks. JO - IEEE Transactions on Parallel & Distributed Systems JF - IEEE Transactions on Parallel & Distributed Systems Y1 - 2014/04// VL - 25 IS - 4 M3 - Article SP - 950 EP - 959 SN - 10459219 AB - This paper explores reliable data fusion in mobile access wireless sensor networks under Byzantine attacks. We consider the q-out-of-m rule, which is popular in distributed detection and can achieve a good tradeoff between the miss detection probability and the false alarm rate. However, a major limitation with it is that the optimal scheme parameters can only be obtained through exhaustive search, making it infeasible for large networks. In this paper, first, by exploiting the linear relationship between the scheme parameters and the network size, we propose simple but effective sub-optimal linear approaches. Second, for better flexibility and scalability, we derive a near-optimal closed-form solution based on the central limit theorem. Third, subjecting to a miss detection constraint, we prove that the false alarm rate of q-out-of-m diminishes exponentially as the network size increases, even if the percentage of malicious nodes remains fixed. Finally, we propose an effective malicious node detection scheme for adaptive data fusion under time-varying attacks; the proposed scheme is analyzed using the entropy-based trust model, and shown to be optimal from the information theory point of view. Simulation examples are provided to illustrate the performance of proposed approaches under both static and dynamic attacks. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Parallel & Distributed Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIRELESS sensor networks KW - MOBILE communication systems KW - MOBILE computing KW - DATA integration (Computer science) KW - ENTROPY KW - ALGORITHMS KW - Byzantine attacks KW - Closed-form solutions KW - Data integration KW - distributed detection KW - Mobile communication KW - Mobile computing KW - Reliability KW - Security in wireless sensor networks KW - Sensors KW - Wireless sensor networks N1 - Accession Number: 94763966; Abdelhakim, Mai 1 Lightfoot, Leonard E. 2 Ren, Jian 1 Li, Tongtong 1; Affiliation: 1: Department of Electrical and Computer Engineering, Michigan State University, 428 S. Shaw Lane, 2120 Engineering Building, East Lansing, 2: Air Force Research Laboratory , Wright-Patterson Air Force Base, 2241 Avionics Circle WPAFB, Dayton,; Source Info: Apr2014, Vol. 25 Issue 4, p950; Subject Term: WIRELESS sensor networks; Subject Term: MOBILE communication systems; Subject Term: MOBILE computing; Subject Term: DATA integration (Computer science); Subject Term: ENTROPY; Subject Term: ALGORITHMS; Author-Supplied Keyword: Byzantine attacks; Author-Supplied Keyword: Closed-form solutions; Author-Supplied Keyword: Data integration; Author-Supplied Keyword: distributed detection; Author-Supplied Keyword: Mobile communication; Author-Supplied Keyword: Mobile computing; Author-Supplied Keyword: Reliability; Author-Supplied Keyword: Security in wireless sensor networks; Author-Supplied Keyword: Sensors; Author-Supplied Keyword: Wireless sensor networks; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 10p; Document Type: Article L3 - 10.1109/TPDS.2013.74 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94763966&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Li AU - Ren, Shangping AU - Korel, Bogdan AU - Kwiat, Kevin A. AU - Salerno, Eric T1 - Improving System Reliability Against Rational Attacks Under Given Resources. JO - IEEE Transactions on Systems, Man & Cybernetics. Systems JF - IEEE Transactions on Systems, Man & Cybernetics. Systems Y1 - 2014/04// VL - 44 IS - 4 M3 - Article SP - 446 EP - 456 SN - 21682216 AB - System reliability has always been a challenging issue for many systems. In order to achieve high reliability, redundancy and voting schemes are often used to tolerate unintentional component failures. For unintentional failures caused by, for instance, normal wear-outs, hardware failures, or software bugs, etc., adding more redundancies often improves a system's reliability. However, when attack-caused failures exist, the number of redundant components and the number of participating voting entities may not be positively proportional to system reliability. In this paper, we study system reliability and system defense strategies when the system is under rational attacks. In particular, we analyze how defense and attack strategies may impact system reliability when both the defender and attacker are given a fixed amount of resources that can only be used for adding camouflaging components or enhancing existing components' cyber protection by defenders, or selecting a subset of components to attack by attackers, respectively. We also present an algorithm to decide the optimal defense strategy in fighting against rational attacks. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Systems, Man & Cybernetics. Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RELIABILITY (Engineering) KW - MAINTAINABILITY (Engineering) KW - SYSTEMS engineering KW - RESOURCE allocation KW - INTERNET security KW - ELECTRONIC systems KW - ALGORITHMS KW - Attacker-defender problem KW - Cybernetics KW - Games KW - Hardware KW - Redundancy KW - resource allocation KW - Resource management KW - Software reliability KW - system reliability KW - voting strategy N1 - Accession Number: 94956971; Wang, Li 1 Ren, Shangping 1 Korel, Bogdan 1 Kwiat, Kevin A. 2 Salerno, Eric 3; Affiliation: 1: Department of Computer Science, Illinois Institute of Technology, Chicago, IL, USA 2: Cyber Science Branch, Air Force Research Laboratory, Rome, NY, USA 3: Department of Mechanical and Aerospace Engineering, University at Buffalo, Buffalo, NY, USA; Source Info: Apr2014, Vol. 44 Issue 4, p446; Subject Term: RELIABILITY (Engineering); Subject Term: MAINTAINABILITY (Engineering); Subject Term: SYSTEMS engineering; Subject Term: RESOURCE allocation; Subject Term: INTERNET security; Subject Term: ELECTRONIC systems; Subject Term: ALGORITHMS; Author-Supplied Keyword: Attacker-defender problem; Author-Supplied Keyword: Cybernetics; Author-Supplied Keyword: Games; Author-Supplied Keyword: Hardware; Author-Supplied Keyword: Redundancy; Author-Supplied Keyword: resource allocation; Author-Supplied Keyword: Resource management; Author-Supplied Keyword: Software reliability; Author-Supplied Keyword: system reliability; Author-Supplied Keyword: voting strategy; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TSMC.2013.2263126 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94956971&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Golubev, Vladimir V. AU - Nguyen, Lap AU - Mankbadi, Reda R. AU - Roger, Michel AU - Visbal, Miguel R. T1 - On flow-acoustic resonant interactions in transitional airfoils. JO - International Journal of Aeroacoustics JF - International Journal of Aeroacoustics Y1 - 2014/04// VL - 13 IS - 1/2 M3 - Article SP - 1 EP - 38 SN - 1475472X AB - We discuss our recent experimental and preliminary numerical efforts examining resonant feedback mechanism of flow-acoustic interactions in airfoil transitional boundary layers. Experimentally recorded unsteady responses of loaded, transitional NACA0012 airfoil with tripped suction or pressure sides confirm the presence of shifted ladder-type tonal structures with dual velocity dependence in the acoustic signal previously reported in the literature. The installation of upstream grid generating low-intensity turbulence appears to eliminate the feedback mechanism leaving just a single velocity dependence for the dominant spectral components. Complementary numerical efforts employ a high-order Navier-Stokes solver implementing low-pass filtering of poorly resolved high-frequency solution content to retain numerical accuracy and stability over the range of transitional flow regimes. Within the scope of 2D analysis, the conducted numerical experiments particularly investigate the behavior of the boundary-layer statistical moments during the transitional flow regimes characterized by the presence of the acoustic feedback, and address sensitivity of the latter to the flow Reynolds number. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aeroacoustics is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROFOILS KW - NAVIER-Stokes equations KW - REYNOLDS number KW - ACOUSTIC radiation KW - RAYLEIGH waves N1 - Accession Number: 96411858; Golubev, Vladimir V. 1 Nguyen, Lap 1 Mankbadi, Reda R. 1 Roger, Michel 2 Visbal, Miguel R. 3; Affiliation: 1: Florida Center for Advanced Aero Propulsion, Computational Aero Propulsion Group Embry-Riddle Aeronautical University, Daytona Beach, FL 32114, USA 2: Laboratoire de Mecanique des Fluides et Acoustique Ecole Centrale de Lyon, Ecully 69134, France 3: Air Force Research Laboratory, WPAFB, OH 80906, USA; Source Info: Apr2014, Vol. 13 Issue 1/2, p1; Subject Term: AEROFOILS; Subject Term: NAVIER-Stokes equations; Subject Term: REYNOLDS number; Subject Term: ACOUSTIC radiation; Subject Term: RAYLEIGH waves; Number of Pages: 38p; Document Type: Article L3 - 10.1260/1475-472X.13.1-2.1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96411858&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, Feishe AU - Shen, Lixin AU - Suter, Bruce W. AU - Xu, Yuesheng T1 - Nesterov’s algorithm solving dual formulation for compressed sensing. JO - Journal of Computational & Applied Mathematics JF - Journal of Computational & Applied Mathematics Y1 - 2014/04// VL - 260 M3 - Article SP - 1 EP - 17 SN - 03770427 AB - Abstract: We develop efficient algorithms for solving the compressed sensing problem. We modify the standard regularization model for compressed sensing by adding a quadratic term to its objective function so that the objective function of the dual formulation of the modified model is Lipschitz continuous. In this way, we can apply the well-known Nesterov algorithm to solve the dual formulation and the resulting algorithms have a quadratic convergence. Numerical results presented in this paper show that the proposed algorithms outperform significantly the state-of-the-art algorithm NESTA in accuracy. [Copyright &y& Elsevier] AB - Copyright of Journal of Computational & Applied Mathematics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - MATHEMATICAL formulas KW - COMPRESSED sensing (Signal processing) KW - MATHEMATICAL models KW - LIPSCHITZ spaces KW - CONTINUOUS functions KW - Compressed sensing KW - Moreau envelope KW - Nesterov’s algorithm KW - Proximity operator KW - regularization N1 - Accession Number: 92653224; Chen, Feishe 1; Email Address: fchen05@syr.edu Shen, Lixin 1; Email Address: lshen03@syr.edu Suter, Bruce W. 2; Email Address: Bruce.Suter@rl.af.mil Xu, Yuesheng 1; Email Address: yxu06@syr.edu; Affiliation: 1: Department of Mathematics, Syracuse University, Syracuse, NY 13244, USA 2: Air Force Research Laboratory, AFRL/RITB, Rome, NY 13441-4505, USA; Source Info: Apr2014, Vol. 260, p1; Subject Term: ALGORITHMS; Subject Term: MATHEMATICAL formulas; Subject Term: COMPRESSED sensing (Signal processing); Subject Term: MATHEMATICAL models; Subject Term: LIPSCHITZ spaces; Subject Term: CONTINUOUS functions; Author-Supplied Keyword: Compressed sensing; Author-Supplied Keyword: Moreau envelope; Author-Supplied Keyword: Nesterov’s algorithm; Author-Supplied Keyword: Proximity operator; Author-Supplied Keyword: regularization; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.cam.2013.09.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92653224&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, Dr. James L. T1 - The Future of the Just War: New Critical Essays. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2014/04// VL - 13 IS - 2 M3 - Book Review SP - 203 EP - 210 PB - Routledge SN - 15027570 KW - JUST war doctrine KW - NONFICTION KW - GENTRY, Caron E. KW - ECKERT, Amy E. KW - FUTURE of the Just War: New Critical Essays, The (Book) N1 - Accession Number: 97901785; Cook, Dr. James L. 1; Affiliation: 1: Professor of Philosophy, US Air Force Academy, USA; Source Info: 2014, Vol. 13 Issue 2, p203; Subject Term: JUST war doctrine; Subject Term: NONFICTION; Reviews & Products: FUTURE of the Just War: New Critical Essays, The (Book); People: GENTRY, Caron E.; People: ECKERT, Amy E.; Number of Pages: 8p; Document Type: Book Review L3 - 10.1080/15027570.2014.943035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97901785&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thompson, Elizabeth AU - Anderson, Timothy T1 - A CUDA implementation of the Continuous Space Language Model. JO - Journal of Supercomputing JF - Journal of Supercomputing Y1 - 2014/04// VL - 68 IS - 1 M3 - Article SP - 65 EP - 86 PB - Springer Science & Business Media B.V. SN - 09208542 AB - The training phase of the Continuous Space Language Model (CSLM) was implemented in the NVIDIA hardware/software architecture Compute Unified Device Architecture (CUDA). A detailed explanation of the CSLM algorithm is provided. Implementation was accomplished using a combination of CUBLAS library routines, NVIDIA NPP functions, and CUDA kernel calls on three different CUDA enabled devices of varying compute capability and a time savings over the traditional CPU approach demonstrated. The efficiency of the CUDA version of the open source implementation is analyzed and compared to that using the Intel Math Kernel Libraries (MKL) on a variety of CUDA enabled and multi-core CPU platforms. It is demonstrated that substantial performance benefit can be obtained using CUDA, even with nonoptimal code. Techniques for optimizing performance are then provided. Furthermore, an analysis is performed to determine the conditions in which the performance of CUDA exceeds that of the multi-core MKL realization. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Supercomputing is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH performance computing -- Research KW - SOFTWARE architecture KW - RESEARCH KW - MODEL (Computer program language) KW - CUDA (Computer architecture) KW - SPACE & time in language KW - BLAS KW - CSLM KW - CUBLAS KW - CUDA KW - GPU KW - High performance computing KW - Math Kernel Library KW - Statistical signal processing KW - NVIDIA Corp. N1 - Accession Number: 95573138; Thompson, Elizabeth 1; Email Address: thompson@engr.ipfw.edu Anderson, Timothy 2; Email Address: Timothy.Anderson@wpafb.af.mil; Affiliation: 1: Purdue University Fort Wayne, 2101 E. Coliseum Blvd. Fort Wayne 46805-1499 USA 2: Air Force Research Laboratory, 711th Human Performance Wing, Wright Patterson Air Force Base, 2255 H Street Dayton 45433-7022 USA; Source Info: Apr2014, Vol. 68 Issue 1, p65; Subject Term: HIGH performance computing -- Research; Subject Term: SOFTWARE architecture; Subject Term: RESEARCH; Subject Term: MODEL (Computer program language); Subject Term: CUDA (Computer architecture); Subject Term: SPACE & time in language; Author-Supplied Keyword: BLAS; Author-Supplied Keyword: CSLM; Author-Supplied Keyword: CUBLAS; Author-Supplied Keyword: CUDA; Author-Supplied Keyword: GPU; Author-Supplied Keyword: High performance computing; Author-Supplied Keyword: Math Kernel Library; Author-Supplied Keyword: Statistical signal processing; Company/Entity: NVIDIA Corp. DUNS Number: 806724555 Ticker: NVDA; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); Number of Pages: 22p; Document Type: Article L3 - 10.1007/s11227-013-1023-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95573138&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Paduano, Qing S. AU - Weyburne, David W. T1 - X-ray diffraction analysis of structural defects in a-plane GaN grown on r-plane sapphire by MOCVD. JO - Physica Status Solidi (C) JF - Physica Status Solidi (C) Y1 - 2014/04// VL - 11 IS - 3/4 M3 - Article SP - 469 EP - 472 SN - 18626351 AB - In this work, we demonstrate the use of X-ray diffraction for analyzing structural imperfections in a-plane GaN grown on r-plane sapphire. Although there are only two ( hh 0) planes accessible under symmetric diffraction, there are an adequate number of diffraction planes accessible under the quasi-symmetric configuration to enable analysis of rocking curves that are not influenced by basal-plane stacking faults. By measuring diffraction profiles for a series of symmetric and asymmetric crystal planes, the broadening terms were separated using extrapolation methods based on their geometric dependence. Individual broadening factors can then be correlated to the relative contribution of different structural defects, including threading dislocations, lateral coherence length, and basal plane stacking faults. (© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi (C) is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTORS -- Research KW - X-ray diffraction KW - GALLIUM nitride KW - SAPPHIRES KW - SURFACES (Technology) -- Defects KW - defects KW - nitride KW - stacking faults N1 - Accession Number: 95465953; Paduano, Qing S. 1 Weyburne, David W. 1; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Apr2014, Vol. 11 Issue 3/4, p469; Subject Term: SEMICONDUCTORS -- Research; Subject Term: X-ray diffraction; Subject Term: GALLIUM nitride; Subject Term: SAPPHIRES; Subject Term: SURFACES (Technology) -- Defects; Author-Supplied Keyword: defects; Author-Supplied Keyword: nitride; Author-Supplied Keyword: stacking faults; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1002/pssc.201300325 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95465953&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Crisman, E. AU - Drehman, A. AU - Miller, R. AU - Osinsky, A. AU - Volovik, D. AU - Vasilyev, V. T1 - Enhanced AlN nanostructures for pyroelectric sensors. JO - Physica Status Solidi (C) JF - Physica Status Solidi (C) Y1 - 2014/04// VL - 11 IS - 3/4 M3 - Article SP - 517 EP - 520 SN - 18626351 AB - Measurements of the pyroelectric coefficient and pyroelectric voltage response of polycrystalline AlN films are presented. The results were used to calculate pyroelectric detectivity figures of merit in order to compare potential AlN pyroelectric sensor performance to other pyroelectric materials such as epitaxial AlN, PbSc0.5Ta0.5O3, and Ba0.65Sr0.35TiO3 films. We observed substantial enhancement (∼5x) of pyroelectric coefficient and pyroelectric figure of merit in polycrystalline multi-oriented AlN films when compared to epitaxial monocrystalline AlN films. A mechanism of such augmentation in polycrystalline AlN films is proposed and discussed. Despite the relatively small absolute value of pyroelectric coefficient, AlN presents pyroelectric detectivity figure of merit near the same magnitude as commonly used pyroelectric materials because of its relatively low dielectric constant. The low dielectric constant enables high speed sensor operation >MHz. The results of these studies are suggesting even higher pyroelectric response might be obtainable for the polycrystalline thin film AlN structures. (© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi (C) is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLID state electronics KW - RESEARCH KW - ALUMINUM nitride films KW - NANOSTRUCTURES KW - THIN films KW - PYROELECTRIC devices KW - aluminum nitride pyroelectric thin film N1 - Accession Number: 95466014; Crisman, E. 1 Drehman, A. 2 Miller, R. 3 Osinsky, A. 3 Volovik, D. 3 Vasilyev, V. 4; Affiliation: 1: Department of Chemical Engineering, University of Rhode Island, Kingston, RI 02881, USA 2: Air Force Research Laboratory, USA 3: Agnitron Technology, Inc., Eden Prairie, MN 55344, USA 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Apr2014, Vol. 11 Issue 3/4, p517; Subject Term: SOLID state electronics; Subject Term: RESEARCH; Subject Term: ALUMINUM nitride films; Subject Term: NANOSTRUCTURES; Subject Term: THIN films; Subject Term: PYROELECTRIC devices; Author-Supplied Keyword: aluminum nitride pyroelectric thin film; Number of Pages: 4p; Document Type: Article L3 - 10.1002/pssc.201300513 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95466014&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Paduano, Qing S. AU - Weyburne, David W. AU - Look, David C. T1 - Photoluminescence of m-plane GaN grown on m-plane sapphire by MOCVD. JO - Physica Status Solidi (C) JF - Physica Status Solidi (C) Y1 - 2014/04// VL - 11 IS - 3/4 M3 - Article SP - 778 EP - 781 SN - 18626351 AB - The photoluminescence of m-plane GaN grown on m-plane sapphire substrate by MOCVD is reported. The defect related emissions with temperature and excitation power dependence are detailed. In addition to the near band-edge emission (at ∼3.472 eV), two major defect-related bands (D1∼3.43 eV and D2∼3.34 eV) are dominant in the low temperature spectra. The D1 emission exhibits thermal quenching with two activation energies (8 and 30 meV), similar to that of a-plane GaN grown on r-plane sapphire. The D2 band was found to consist of a complex overlap of multiple emissions. By fitting the asymmetric band using multiple Gaussian functions, the extracted emission at ∼3.34 eV was shown to have thermal activation energy ∼17-20 meV. This emission exhibits different behavior from that of D2 in a-plane GaN in temperature and excitation power dependency, indicating the possible involvement of different defects due to the changes in growth characteristics. (© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi (C) is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTORS -- Research KW - SOLID state electronics KW - RESEARCH KW - GALLIUM nitride KW - METAL organic chemical vapor deposition KW - PHOTOLUMINESCENCE KW - defects KW - nitride KW - photoluminescence KW - stacking faults N1 - Accession Number: 95466062; Paduano, Qing S. 1 Weyburne, David W. 1 Look, David C. 1,2; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: Semiconductor Research Center, Wright State University, Dayton, OH, 45435, USA; Source Info: Apr2014, Vol. 11 Issue 3/4, p778; Subject Term: SEMICONDUCTORS -- Research; Subject Term: SOLID state electronics; Subject Term: RESEARCH; Subject Term: GALLIUM nitride; Subject Term: METAL organic chemical vapor deposition; Subject Term: PHOTOLUMINESCENCE; Author-Supplied Keyword: defects; Author-Supplied Keyword: nitride; Author-Supplied Keyword: photoluminescence; Author-Supplied Keyword: stacking faults; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1002/pssc.201300328 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95466062&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Via, G. D. AU - Felbinger, J. G. AU - Blevins, J. AU - Chabak, K. AU - Jessen, G. AU - Gillespie, J. AU - Fitch, R. AU - Crespo, A. AU - Sutherlin, K. AU - Poling, B. AU - Tetlak, S. AU - Gilbert, R. AU - Cooper, T. AU - Baranyai, R. AU - Pomeroy, J. W. AU - Kuball, M. AU - Maurer, J. J. AU - Bar-Cohen, A. T1 - Wafer-scale GaN HEMT performance enhancement by diamond substrate integration. JO - Physica Status Solidi (C) JF - Physica Status Solidi (C) Y1 - 2014/04// VL - 11 IS - 3/4 M3 - Article SP - 871 EP - 874 SN - 18626351 AB - A wafer-scale comparison of HEMTs fabricated on as-grown GaN/Si and HEMTs fabricated in parallel on epitaxial layers from the GaN/Si growth integrated with a diamond substrate are presented. Diamond, which offers the highest room-temperature thermal conductivity of any bulk material, is being evaluated as a solution for thermal limitations observed in GaN-based devices. This paper will present electrical and thermal data collected at the wafer scale demonstrating the improvement realized by integration of a high-thermal-conductivity substrate. (© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi (C) is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTORS -- Research KW - GALLIUM nitride KW - SUBSTRATES (Materials science) KW - DIAMONDS KW - THERMAL resistance KW - diamond substrate integration KW - GaN/diamond KW - thermal resistance N1 - Accession Number: 95465938; Via, G. D. 1 Felbinger, J. G. 2 Blevins, J. 1 Chabak, K. 1 Jessen, G. 1 Gillespie, J. 1 Fitch, R. 1 Crespo, A. 1 Sutherlin, K. 1 Poling, B. 3 Tetlak, S. 3 Gilbert, R. 3 Cooper, T. 3 Baranyai, R. 4 Pomeroy, J. W. 4 Kuball, M. 4 Maurer, J. J. 2 Bar-Cohen, A. 5; Affiliation: 1: Air Force Research Laboratory, Dayton, OH, USA 2: Booz Allen Hamilton, Arlington, VA, USA 3: Wyle Labs, Dayton, OH, USA 4: Bristol University, Bristol, UK 5: Defense Advanced Research Projects Agency, Arlington, VA, USA; Source Info: Apr2014, Vol. 11 Issue 3/4, p871; Subject Term: SEMICONDUCTORS -- Research; Subject Term: GALLIUM nitride; Subject Term: SUBSTRATES (Materials science); Subject Term: DIAMONDS; Subject Term: THERMAL resistance; Author-Supplied Keyword: diamond substrate integration; Author-Supplied Keyword: GaN/diamond; Author-Supplied Keyword: thermal resistance; NAICS/Industry Codes: 414410 Jewellery and watch merchant wholesalers; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 423940 Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1002/pssc.201300504 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95465938&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Mingyang AU - Liu, Jian AU - Li, Jing AU - Uk Kim, Byoung T1 - Bayesian modeling of multi-state hierarchical systems with multi-level information aggregation. JO - Reliability Engineering & System Safety JF - Reliability Engineering & System Safety Y1 - 2014/04// VL - 124 M3 - Article SP - 158 EP - 164 SN - 09518320 AB - Abstract: Reliability modeling of multi-state hierarchical systems is challenging because of the complex system structures and imbalanced reliability information available at different system levels. This paper proposes a Bayesian multi-level information aggregation approach to model the reliability of multi-level hierarchical systems by utilizing all available reliability information throughout the system. Cascading failure dependency among components and/or sub-systems at the same level is explicitly considered. The proposed methodology can significantly improve the accuracy of system-level reliability modeling. A case study demonstrates the effectiveness of the proposed methodology. [Copyright &y& Elsevier] AB - Copyright of Reliability Engineering & System Safety is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BAYESIAN analysis KW - MULTI-State Information System KW - SYSTEMS theory KW - RELIABILITY (Engineering) KW - INFORMATION theory KW - FAILURE analysis (Engineering) KW - Bayesian networks KW - Hierarchical structure KW - Multiple failure states KW - Prior elicitation KW - System reliability N1 - Accession Number: 94154684; Li, Mingyang 1 Liu, Jian 1; Email Address: jianliu@email.arizona.edu Li, Jing 2 Uk Kim, Byoung 3; Affiliation: 1: Department of Systems and Industrial Engineering, The University of Arizona, Tucson, AZ 85721, USA 2: Industrial Engineering, School of Computing, Informatics, and Decision Systems Engineering, Arizona State University, Tempe, AZ 85287, USA 3: Autonomous Control Branch, Air Force Research Laboratory Wright-Patterson AFB, OH 45433, USA; Source Info: Apr2014, Vol. 124, p158; Subject Term: BAYESIAN analysis; Subject Term: MULTI-State Information System; Subject Term: SYSTEMS theory; Subject Term: RELIABILITY (Engineering); Subject Term: INFORMATION theory; Subject Term: FAILURE analysis (Engineering); Author-Supplied Keyword: Bayesian networks; Author-Supplied Keyword: Hierarchical structure; Author-Supplied Keyword: Multiple failure states; Author-Supplied Keyword: Prior elicitation; Author-Supplied Keyword: System reliability; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ress.2013.12.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94154684&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pandremmenou, Katerina AU - Kondi, Lisimachos P. AU - Parsopoulos, Konstantinos E. AU - Bentley, Elizabeth S. T1 - Game-theoretic solutions through intelligent optimization for efficient resource management in wireless visual sensor networks. JO - Signal Processing: Image Communication JF - Signal Processing: Image Communication Y1 - 2014/04// VL - 29 IS - 4 M3 - Article SP - 472 EP - 493 SN - 09235965 AB - Abstract: We propose a quality-driven cross-layer optimization scheme for wireless direct sequence code division multiple access (DS-CDMA) visual sensor networks (VSNs). The scheme takes into account the fact that different nodes image videos with varying amounts of motion and determines the source coding rate, channel coding rate, and power level for each node under constraints on the available bit rate and power. The objective is to maximize the quality of the video received by the centralized control unit (CCU) from each node. However, since increasing the power level of one node will lead to increased interference with the rest of the nodes, simultaneous maximization of the video qualities of all nodes is not possible. In fact, there are an infinite number of Pareto-optimal solutions. Thus, we propose the use of the Nash bargaining solution (NBS), which pinpoints one of the infinite Pareto-optimal solutions, based on the stipulation that the solution should satisfy four fairness axioms. The NBS results in a mixed-integer optimization problem, which is solved using the particle swarm optimization (PSO) algorithm. The presented experimental results demonstrate the advantages of the NBS compared with alternative optimization criteria. [Copyright &y& Elsevier] AB - Copyright of Signal Processing: Image Communication is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIRELESS sensor networks KW - GAME theory KW - CODE division multiple access KW - PARTICLE swarm optimization KW - ARTIFICIAL intelligence KW - RESOURCE management KW - ALGORITHMS KW - Bargaining powers KW - Game theory KW - Nash bargaining solution KW - Particle swarm optimization KW - Resource allocation KW - Visual sensor network N1 - Accession Number: 95500505; Pandremmenou, Katerina 1; Email Address: apandrem@cs.uoi.gr Kondi, Lisimachos P. 1; Email Address: lkon@cs.uoi.gr Parsopoulos, Konstantinos E. 1; Email Address: kostasp@cs.uoi.gr Bentley, Elizabeth S. 2; Email Address: Elizabeth.Bentley@rl.af.mil; Affiliation: 1: Department of Computer Science & Engineering, University of Ioannina, GR-45110 Ioannina, Greece 2: Air Force Research Laboratory, Rome, NY, USA; Source Info: Apr2014, Vol. 29 Issue 4, p472; Subject Term: WIRELESS sensor networks; Subject Term: GAME theory; Subject Term: CODE division multiple access; Subject Term: PARTICLE swarm optimization; Subject Term: ARTIFICIAL intelligence; Subject Term: RESOURCE management; Subject Term: ALGORITHMS; Author-Supplied Keyword: Bargaining powers; Author-Supplied Keyword: Game theory; Author-Supplied Keyword: Nash bargaining solution; Author-Supplied Keyword: Particle swarm optimization; Author-Supplied Keyword: Resource allocation; Author-Supplied Keyword: Visual sensor network; Number of Pages: 22p; Document Type: Article L3 - 10.1016/j.image.2014.02.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95500505&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wu, Judy Z AU - Shi, Jack J AU - Baca, Javier F AU - Emergo, Rose AU - Haugan, Timothy J AU - Maiorov, Boris AU - Holesinger, Terry T1 - The effect of lattice strain on the diameter of BaZrO3 nanorods in epitaxial YBa2Cu3O7−δ films. JO - Superconductor Science & Technology JF - Superconductor Science & Technology Y1 - 2014/04// VL - 27 IS - 4 M3 - Article SP - 044010 EP - 044016 SN - 09532048 AB - An elastic strain model has been applied in an effort to understand the effect of the lattice strain on the diameter of the BaZrO3 (BZO) nanorods self-assembled into aligned arrays along the c-axis in BZO-doped epitaxial YBa2Cu3O7−δ (YBCO) thin films. The calculated elastic energy of the strained BZO/YBCO composite lattice suggests that the diameter of the nanorods is approximately independent of the doping concentration of BZO as long as the density of the nanorods is sufficiently large. An experimental confirmation was carried out using transmission electron microscopy on YBCO thin films with BZO doping varying from 2% to 6% volume concentration. The diameter of the BZO nanorods was indeed found to be approximately constant in the range of 5.2–5.9 nm. The increase of the doping concentration therefore simply leads to an increase of the nanorod density, which links directly to the matching field of the effective pinning and is consistent with the transport Jc results measured for these samples. [ABSTRACT FROM AUTHOR] AB - Copyright of Superconductor Science & Technology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANORODS KW - THICK films KW - SOLID state electronics KW - THIN films KW - TRANSMISSION electron microscopy N1 - Accession Number: 94991735; Wu, Judy Z 1 Shi, Jack J 1; Email Address: jshi@ku.edu Baca, Javier F 1 Emergo, Rose 1 Haugan, Timothy J 2 Maiorov, Boris 3 Holesinger, Terry 3; Affiliation: 1: Department of Physics & Astronomy, The University of Kansas, Lawrence, KS 66045, USA 2: U.S. Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 3: Los Alamos National Laboratory, Los Alamos, NM 87545, USA; Source Info: Apr2014, Vol. 27 Issue 4, p044010; Subject Term: NANORODS; Subject Term: THICK films; Subject Term: SOLID state electronics; Subject Term: THIN films; Subject Term: TRANSMISSION electron microscopy; Number of Pages: 7p; Document Type: Article L3 - 10.1088/0953-2048/27/4/044010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94991735&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Joshua E. AU - Griffin, Daniel K. AU - Leny, Juliann K. AU - Hagen, Joshua A. AU - Chávez, Jorge L. AU - Kelley-Loughnane, Nancy T1 - Colorimetric detection with aptamer-gold nanoparticle conjugates coupled to an android-based color analysis application for use in the field. JO - Talanta JF - Talanta Y1 - 2014/04// VL - 121 M3 - Article SP - 247 EP - 255 SN - 00399140 AB - Abstract: The feasibility of using aptamer-gold nanoparticle conjugates (Apt-AuNPs) to design colorimetric assays for in the field detection of small molecules was investigated. An assay to detect cocaine was designed using two clones of a known cocaine-binding aptamer. The assay was based on the AuNPs difference in affinity for single-stranded DNA (non-binding) and double stranded DNA (target bound). In the first assay, a commonly used design was followed, in which the aptamer and target were incubated to allow binding followed by exposure to the AuNPs. Interactions between the non-bound analytes and the AuNPs surface resulted in a number of false positives. The assay was redesigned by incubating the AuNPs and the aptamer prior to target addition to passivate the AuNPs surface. The adsorbed aptamer was able to bind the target while preventing non-specific interactions. The assay was validated with a number of masking and cutting agents and other controlled substances showing minimal false positives. Studies to improve the assay performance in the field were performed, showing that assay activity could be preserved for up to 2 months. To facilitate the assay analysis, an android application for automatic colorimetric characterization was developed. The application was validated by challenging the assay with cocaine standards of different concentrations, and comparing the results to a conventional plate reader, showing outstanding agreement. Finally, the rapid identification of cocaine in mixtures mimicking street samples was demonstrated. This work established that Apt-AuNPs can be used to design robust assays to be used in the field. [Copyright &y& Elsevier] AB - Copyright of Talanta is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLORIMETRY KW - APTAMERS KW - GOLD nanoparticles KW - BIOLOGICAL assay KW - COCAINE KW - COMPARATIVE studies KW - Aptamers KW - Biosensors KW - Colorimetric app KW - Nanoparticles/nanotechnology KW - Nucleic acids KW - Optical sensors N1 - Accession Number: 94792435; Smith, Joshua E. 1 Griffin, Daniel K. 2 Leny, Juliann K. 1 Hagen, Joshua A. 1 Chávez, Jorge L. 1; Email Address: jorge.chavez.ctr.per@us.af.mil Kelley-Loughnane, Nancy 1; Email Address: nancy.kelley-loughnane.1@us.af.mil; Affiliation: 1: Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, United States 2: College of Engineering and Applied Science, School of Electronic and Computing Systems, University of Cincinnati, 812 Rhodes Hall, Cincinnati, OH 45221, United States; Source Info: Apr2014, Vol. 121, p247; Subject Term: COLORIMETRY; Subject Term: APTAMERS; Subject Term: GOLD nanoparticles; Subject Term: BIOLOGICAL assay; Subject Term: COCAINE; Subject Term: COMPARATIVE studies; Author-Supplied Keyword: Aptamers; Author-Supplied Keyword: Biosensors; Author-Supplied Keyword: Colorimetric app; Author-Supplied Keyword: Nanoparticles/nanotechnology; Author-Supplied Keyword: Nucleic acids; Author-Supplied Keyword: Optical sensors; NAICS/Industry Codes: 325411 Medicinal and Botanical Manufacturing; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.talanta.2013.12.062 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94792435&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gumbs, Godfrey AU - Iurov, Andrii AU - Danhong Huang AU - Fekete, Paula AU - Zhemchuzhna, Liubov T1 - Effects of periodic scattering potential on Landau quantization and ballistic transport of electrons in graph. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2014/03/31/ VL - 1590 M3 - Article SP - 134 EP - 142 PB - American Institute of Physics SN - 0094243X AB - A two-dimensional periodic array of scatterers has been introduced to a single layer of graphene in the presence of an external magnetic field perpendicular to the graphene layer. The eigenvalue equation for such a system has been solved numerically to display the structure of split Landau subbands as functions of both wave number and magnetic flux. The effects of pseudo-spin coupling and Landau subbands mixing by a strong scattering potential have been demonstrated. Additionally, we investigated the square barrier tunneling problem when magnetic field is present, as well as demonstrate the crucial difference in the modulated band structure between graphene and the two-dimensional electron gas. The low-magnetic field regime is particularly interesting for Dirac fermions and has been discussed. Tunneling of Dirac electrons through a magnetic potential barrier has been investigated to complement the reported results on electrostatic potential scattering in the presence of an ambient magnetic field. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERMITTENCY (Nuclear physics) KW - LANDAU levels KW - GRAPHENE KW - ELECTRON tunneling KW - EIGENVALUE equations KW - MAGNETIC flux KW - MAGNETIC fields KW - electron tunneling KW - fractal structures KW - fractal structuresx KW - graphene KW - Hofstadter butterfly KW - Landau levels KW - transmission N1 - Accession Number: 95333109; Gumbs, Godfrey 1,2 Iurov, Andrii 3 Danhong Huang 4 Fekete, Paula 5 Zhemchuzhna, Liubov 6; Affiliation: 1: Department of Physics and Astronomy, Hunter College, CUNY, 695 Park Avenue, New York, NY 10065, USA 2: Donostia International Physics Center (DIPC), P de Manuel Lardizabal, 4, 20018 San Sebastian, Basque Country, Spain 3: Department of Physics and Astronomy, Hunter College, City University of New York, 695 Park Avenue, New York, NY 10065, USA 4: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, NM 87117, USA 5: West Point Military Academy, West Point, NY, USA 6: Department of Physics, North Carolina Central University, Durham, North Carolina 27707, USA; Source Info: 2014, Vol. 1590, p134; Subject Term: INTERMITTENCY (Nuclear physics); Subject Term: LANDAU levels; Subject Term: GRAPHENE; Subject Term: ELECTRON tunneling; Subject Term: EIGENVALUE equations; Subject Term: MAGNETIC flux; Subject Term: MAGNETIC fields; Author-Supplied Keyword: electron tunneling; Author-Supplied Keyword: fractal structures; Author-Supplied Keyword: fractal structuresx; Author-Supplied Keyword: graphene; Author-Supplied Keyword: Hofstadter butterfly; Author-Supplied Keyword: Landau levels; Author-Supplied Keyword: transmission; Number of Pages: 9p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1063/1.4870209 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95333109&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Chia-Hui AU - Syu, Shih-Han AU - Chen, Yu-Shiun AU - Hussain, Saber M AU - Onischuk, Andrei Aleksandrovich AU - Chen, Wen Liang AU - Huang, G Steven T1 - Gold nanoparticles regulate the blimp1/pax5 pathway and enhance antibody secretion in B-cells. JO - Nanotechnology JF - Nanotechnology Y1 - 2014/03/28/ VL - 25 IS - 12 M3 - Article SP - 125103 EP - 125111 SN - 09574484 AB - Nanoparticles are potential threats to human health and the environment; however, their medical applications as drug carriers targeting cancer cells bring hope to contemporary cancer therapy. As a model drug carrier, gold nanoparticles (GNPs) have been investigated extensively for in vivo toxicity. The effect of GNPs on the immune system, however, has rarely been examined. Antibody-secreting cells were treated with GNPs with diameters ranging from 2 to 50 nm. The GNPs enhanced IgG secretion in a size-dependent manner, with a peak of efficacy at 10 nm. The immune-stimulatory effect reached a maximum at 12 h after treatment but returned to control levels 24 h after treatment. This enhancing effect was validated ex vivo using B-cells isolated from mouse spleen. Evidence from RT-PCR and western blot experiments indicates that GNP-treatment upregulated B-lymphocyte-induced maturation protein 1 (blimp1) and downregulated paired box 5 (pax5). Immunostaining for blimp1 and pax5 in B-cells confirmed that the GNPs stimulated IgG secretion through the blimp1/pax5 pathway. The immunization of mice using peptide-conjugated GNPs indicated that the GNPs were capable of enhancing humoral immunity in a size-dependent manner. This effect was consistent with the bio-distribution of the GNPs in mouse spleen. In conclusion, in vitro, ex vivo, and in vivo evidence supports our hypothesis that GNPs enhance humoral immunity in mouse. The effect on the immune system should be taken into account if nanoparticles are used as carriers for drug delivery. In addition to their toxicity, the immune-stimulatory activity of nanoparticles could play an important role in human health and could have an environmental impact. [ABSTRACT FROM AUTHOR] AB - Copyright of Nanotechnology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTIBODY formation KW - CANCER cell growth KW - PREVENTION KW - CANCER treatment KW - GOLD nanoparticles KW - WESTERN immunoblotting KW - POLYMERASE chain reaction -- Diagnostic use N1 - Accession Number: 94682690; Lee, Chia-Hui 1,2 Syu, Shih-Han 1 Chen, Yu-Shiun 3 Hussain, Saber M 4 Onischuk, Andrei Aleksandrovich 5 Chen, Wen Liang 2,3,6; Email Address: wenurea@yahoo.com.tw Huang, G Steven 1,7; Email Address: gstevehuang@mail.nctu.edu.tw; Affiliation: 1: Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan 2: These authors contribute equally to this work. 3: College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan 4: Applied Biotechnology Branch, Human Effectiveness Directorate, 711 Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH 45431, USA 5: Institute of Chemical Kinetics and Combustion, Siberian Branch of Russian Academy of Sciences, Novosibirsk 630090, Russia 6: Address for correspondence: Department of Biological Science and Technology, National Chiao Tung University, 75 Bo-Ai Street, Hsinchu 300, Taiwan. 7: Address for correspondence: Department of Materials Science and Engineering, National Chiao Tung University, 1001 University Road, Hsinchu 300, Taiwan.; Source Info: 3/28/2014, Vol. 25 Issue 12, p125103; Subject Term: ANTIBODY formation; Subject Term: CANCER cell growth; Subject Term: PREVENTION; Subject Term: CANCER treatment; Subject Term: GOLD nanoparticles; Subject Term: WESTERN immunoblotting; Subject Term: POLYMERASE chain reaction -- Diagnostic use; Number of Pages: 9p; Document Type: Article L3 - 10.1088/0957-4484/25/12/125103 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94682690&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Joyce, Donna M. AU - Venkat, Narayanan AU - Ouchen, Fahima AU - Singh, Kristi M. AU - Smith, Steven R. AU - Grabowski, Christopher A. AU - Murray, P. Terry AU - Grote, James G. T1 - Deoxyribonucleic acid-based hybrid thin films for potential application as high energy density capacitors. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2014/03/21/ VL - 115 IS - 11 M3 - Article SP - 114108-1 EP - 114108-5 PB - American Institute of Physics SN - 00218979 AB - Deoxyribonucleic acid (DNA) based hybrid films incorporating sol-gel-derived ceramics have shown strong promise as insulating dielectrics for high voltage capacitor applications. Our studies of DNA-CTMA (cetyltrimethylammonium) complex/sol-gel ceramic hybrid thin film devices have demonstrated reproducibility and stability in temperature- and frequency-dependent dielectric properties with dielectric constant k∼5.0 (1 kHz), as well as reliability in DC voltage breakdown measurements, attaining values consistently in the range of 300-350 V/μm. The electrical/dielectric characteristics of DNA-CTMA films with sol-gel-derived ceramics were examined to determine the critical energy storage parameters such as voltage breakdown and dielectric constant. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films -- Electric properties KW - DIELECTRIC materials KW - SOLID state electronics KW - ENERGY storage KW - EXCITON theory N1 - Accession Number: 95095832; Joyce, Donna M. 1 Venkat, Narayanan 2,3 Ouchen, Fahima 2,3 Singh, Kristi M. 2,4 Smith, Steven R. 2,3 Grabowski, Christopher A. 2,4 Murray, P. Terry 2,3 Grote, James G. 2; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Ohio 45433, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433, USA 3: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469, USA 4: UES, Inc., 4401 Dayton Xenia Road, Dayton, Ohio 45432, USA; Source Info: 2014, Vol. 115 Issue 11, p114108-1; Subject Term: THIN films -- Electric properties; Subject Term: DIELECTRIC materials; Subject Term: SOLID state electronics; Subject Term: ENERGY storage; Subject Term: EXCITON theory; Number of Pages: 5p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1063/1.4868339 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95095832&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parker, C.W. AU - Voss, D.L. AU - Fritz, T.A. T1 - Electron and proton beam testing of pixelated solid state detectors. JO - Nuclear Instruments & Methods in Physics Research Section A JF - Nuclear Instruments & Methods in Physics Research Section A Y1 - 2014/03/21/ VL - 741 M3 - Article SP - 37 EP - 41 SN - 01689002 AB - Abstract: The biasing of guard rings in pixelated ion implanted silicon solid state detectors is often given little analysis as to the potential detrimental effects associated with capacitive coupling of the response of the pixel element to the guard ring and vise versa. This has been demonstrated and illustrates the importance of using beam testing to measure the angular response of particle instruments. We describe herein the development cycle of the Fixed Sensor Head (FSH) instrument, an imaging electron spectrometer that will be flown on the US Air Force's Demonstration and Science eXperiment (DSX) mission. During its construction, the FSH was tested using particle beams many times and each test yielded an important result that contributed to the design of the instrument before being delivered in August 2010. After several lower energy ( ) beam calibration tests at Hanscom Air Force Base demonstrated that the FSH was performing very well, a final, higher energy ( ) beam test at the Goddard Space Flight Center was almost skipped due to budget and scheduling constraints. This final test illuminated a major problem with the biasing of a detector guard ring that would have been difficult if not impossible to track down on orbit. The problem was easily fixed, but serves to highlight the importance of biasing of guard rings properly, and the necessity of testing instruments across the entire range of possible stimuli that they may encounter. [Copyright &y& Elsevier] AB - Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTON beams KW - ELECTRON beams KW - SOLID state detectors KW - PIXELS KW - COUPLING constants (Nuclear physics) KW - NUCLEAR counters KW - PARTICLES (Nuclear physics) KW - Biasing KW - Charged particle detectors KW - Solid state detectors N1 - Accession Number: 94692603; Parker, C.W. 1; Email Address: cwparker@bu.edu Voss, D.L. 2 Fritz, T.A. 1; Affiliation: 1: Boston University, Center for Space Physics, 725 Commonwealth Ave., Boston, MA 02215, United States 2: United States Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, Albuquerque, NM, United States; Source Info: Mar2014, Vol. 741, p37; Subject Term: PROTON beams; Subject Term: ELECTRON beams; Subject Term: SOLID state detectors; Subject Term: PIXELS; Subject Term: COUPLING constants (Nuclear physics); Subject Term: NUCLEAR counters; Subject Term: PARTICLES (Nuclear physics); Author-Supplied Keyword: Biasing; Author-Supplied Keyword: Charged particle detectors; Author-Supplied Keyword: Solid state detectors; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.nima.2013.11.067 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94692603&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mousavi, S. Hossein AU - Khanikaev, Alexander B. AU - Allen, Jeffery AU - Allen, Monica AU - Shvets, Gennady T1 - Gyromagnetically Induced Transparency of Metasurfaces. JO - Physical Review Letters JF - Physical Review Letters Y1 - 2014/03/21/ VL - 112 IS - 11 M3 - Article SP - 117402-1 EP - 117402-6 SN - 00319007 AB - We demonstrate that the presence of a (gyro) magnetic substrate can produce an analog of electromagnetically induced transparency in Fano-resonant metamolecules. The simplest implementation of such gyromagnetically induced transparency (GIT) in a metasurface, comprised of an array of resonant antenna pairs placed on a gyromagnetic substrate and illuminated by a normally incident electromagnetic wave, is analyzed. Time reversal and spatial inversion symmetry breaking introduced by the dc magnetization makes metamolecules bianisotropic. This causes Fano interference between the otherwise uncoupled symmetric and antisymmetric resonances of the metamolecules giving rise to a sharp transmission peak through the otherwise reflective metasurface. We show that, for an oblique wave incidence, one-way GIT can be achieved by the combination of spatial dispersion and gyromagnetic effect. These theoretically predicted phenomena pave the way to nonreciprocal switches and isolators that can be dynamically controlled by electric currents. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review Letters is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GYROMAGNETIC ratio KW - ANTENNA radiation patterns KW - ELECTROMAGNETIC waves KW - ELECTRIC interference KW - ELECTRIC currents N1 - Accession Number: 95552835; Mousavi, S. Hossein 1,2 Khanikaev, Alexander B. 3,4; Email Address: khanikaev@gmail.com Allen, Jeffery 5 Allen, Monica 5 Shvets, Gennady 1; Email Address: gena@physics.utexas.edu; Affiliation: 1: Department of Physics, University of Texas, Austin, Austin, Texas 78712, USA 2: Cockrell School of Engineering, University of Texas, Austin, Austin, Texas 78712, USA 3: Department of Physics, Queens College of The City University of New York, Queens, New York 11367, USA 4: Graduate Center of The City University of New York, New York, New York 10016, USA 5: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 3/21/2014, Vol. 112 Issue 11, p117402-1; Subject Term: GYROMAGNETIC ratio; Subject Term: ANTENNA radiation patterns; Subject Term: ELECTROMAGNETIC waves; Subject Term: ELECTRIC interference; Subject Term: ELECTRIC currents; Number of Pages: 6p; Document Type: Article L3 - 10.1103/PhysRevLett.112.117402 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95552835&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - MacDonald, N A AU - Cappelli, M A AU - Jr, W A Hargus T1 - Time-synchronized continuous wave laser-induced fluorescence axial velocity measurements in a diverging cusped field thruster. JO - Journal of Physics: D Applied Physics JF - Journal of Physics: D Applied Physics Y1 - 2014/03/19/ VL - 47 IS - 11 M3 - Article SP - 115204 EP - 115212 SN - 00223727 AB - Measurements are presented of time-synchronized axial ion velocities at three positions in the discharge channel and plume of a diverging cusped field thruster operating on xenon. Xenon axial ion velocities for the thruster are derived from laser-induced fluorescence measurements of the 5d[4]7/2–6p[3]5/2 xenon ion excited state transition centred at λ = 834.72 nm. The thruster is operated in a high-current mode, where the anode discharge current is shown to oscillate quasi-periodically. A sample-hold scheme is implemented to correlate ion velocities to phases along the current cycle. These time-synchronized measurements show that median axial ion velocities decrease as discharge current increases, and that the widths of ion velocity distributions increase with increases in discharge current for positions at the exit plane and outside the thruster channel. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: D Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONTINUOUS wave lasers KW - LASER-induced fluorescence KW - FLUORESCENCE KW - ION mobility KW - XENON N1 - Accession Number: 94672763; MacDonald, N A 1,2; Email Address: natalia.macdonald@us.af.mil Cappelli, M A 1 Jr, W A Hargus 2; Affiliation: 1: Stanford Plasma Physics Laboratory, Stanford University, Stanford, CA 94305, USA 2: In-Space Propulsion Branch, Air Force Research Laboratory, Edwards AFB, CA 93524, USA; Source Info: 3/19/2014, Vol. 47 Issue 11, p115204; Subject Term: CONTINUOUS wave lasers; Subject Term: LASER-induced fluorescence; Subject Term: FLUORESCENCE; Subject Term: ION mobility; Subject Term: XENON; Number of Pages: 9p; Document Type: Article L3 - 10.1088/0022-3727/47/11/115204 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94672763&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baca, F. Javier AU - Haugan, Timothy J. AU - Barnes, Paul N. AU - Holesinger, Terry G. AU - Maiorov, Boris AU - Lu, Rongtao AU - Wang, Xiang AU - Reichart, Joshua N. AU - Wu, Judy Z. T1 - Interactive Growth Effects of Rare-Earth Nanoparticles on Nanorod Formation in YBa2Cu3O x Thin Films. JO - Advanced Functional Materials JF - Advanced Functional Materials Y1 - 2014/03/15/ VL - 23 IS - 38 M3 - Article SP - 4826 EP - 4831 SN - 1616301X AB - The controlled growth of self-assembled second-phase nanostructures has been shown to be an essential tool for enhancing properties of several composite oxide thin film systems. Here, the role of Y2O3 nanoparticles on the growth of BaZrO3 (BZO) nanorods is investigated in order to understand the mechanisms governing their self-assembly in YBa2Cu3O7- x (YBCO) thin films and to more fully control the resulting defect landscape. By examining the microstructure and current-carrying capacity of BZO-doped YBCO films, it is shown that the nanorod growth dynamics are significantly enhanced when compared to films double-doped with BZO and Y2O3 nanoparticles. The average nanorod length and associated critical current densities are found to increase at a significantly higher rate in the absence of Y2O3 nanoparticles when the growth temperature is increased. Using microstructural data from transmission electron microscopy studies and the response in critical current density, the interactive effects of multiple dopants that must be considered to fully control the defect landscape in oxide thin films are shown. [ABSTRACT FROM AUTHOR] AB - Copyright of Advanced Functional Materials is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANORODS -- Synthesis KW - RESEARCH KW - NANOPARTICLES KW - TRANSMISSION electron microscopes KW - MOLECULAR self-assembly KW - SUPERCONDUCTORS KW - THIN films KW - BaZrO3 nanorods KW - self-assembly KW - thin film growth KW - Y2O3 nanoparticles KW - YBCO superconductors N1 - Accession Number: 90634078; Baca, F. Javier 1,2,3 Haugan, Timothy J. 2 Barnes, Paul N. 2 Holesinger, Terry G. 1 Maiorov, Boris 1 Lu, Rongtao 3 Wang, Xiang 3 Reichart, Joshua N. 2 Wu, Judy Z. 3; Affiliation: 1: Los Alamos National Laboratory, Los Alamos, NM 87545, USA 2: U.S. Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433, USA 3: University of Kansas, Department of Physics and Astronomy, Lawrence, KS 66045, USA; Source Info: Mar2014, Vol. 23 Issue 38, p4826; Subject Term: NANORODS -- Synthesis; Subject Term: RESEARCH; Subject Term: NANOPARTICLES; Subject Term: TRANSMISSION electron microscopes; Subject Term: MOLECULAR self-assembly; Subject Term: SUPERCONDUCTORS; Subject Term: THIN films; Author-Supplied Keyword: BaZrO3 nanorods; Author-Supplied Keyword: self-assembly; Author-Supplied Keyword: thin film growth; Author-Supplied Keyword: Y2O3 nanoparticles; Author-Supplied Keyword: YBCO superconductors; Number of Pages: 6p; Document Type: Article L3 - 10.1002/adfm.201203660 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90634078&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gonzales, Ashley E. AU - Koo, Justin W. AU - Hargus, William A. T1 - Comparison of Numerical and Experimental Time-Resolved Near-Field Hall Thruster Plasma Properties. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2014/03/15/Mar2014 Part 2 VL - 42 IS - 3 M3 - Article SP - 806 EP - 812 SN - 00933813 AB - Breathing mode oscillations of a xenon 600 W Hall effect thruster have been studied using temporally resolved experimental data and numerical modeling. Fluctuations in xenon neutral near infrared (810–835 nm) emission in the near field thruster plume have been measured at 1-\mus resolution using a high speed, phase-matched intensified charge coupled device. Oscillations in electron temperature, 3–9 eV, have been inferred using a collisional-radiative model and a two-line ratio method. The time-resolved emission and electron temperature measurements are then used to assess the accuracy of the numerical model HPHall. Although simulations were able to accurately predict the time averaged thruster behavior, the model greatly under predicts the magnitude of the oscillations. General phase trends between the discharge current and emission as well as electron temperature are consistent with observations, suggesting that the model is capable of capturing some of the oscillatory behavior despite the dampening of the oscillations. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HALL effect in ionized gases KW - PLASMA (Ionized gases) KW - XENON KW - OSCILLATIONS KW - NUMERICAL analysis KW - NEAR-fields KW - Breathing mode KW - Current measurement KW - Delays KW - hall thruster KW - HPHall KW - Numerical models KW - Oscillators KW - plume emission KW - Temperature measurement KW - Uncertainty KW - Xenon N1 - Accession Number: 94892209; Gonzales, Ashley E. 1 Koo, Justin W. 1 Hargus, William A. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Edwards AFB, CA, USA; Source Info: Mar2014 Part 2, Vol. 42 Issue 3, p806; Subject Term: HALL effect in ionized gases; Subject Term: PLASMA (Ionized gases); Subject Term: XENON; Subject Term: OSCILLATIONS; Subject Term: NUMERICAL analysis; Subject Term: NEAR-fields; Author-Supplied Keyword: Breathing mode; Author-Supplied Keyword: Current measurement; Author-Supplied Keyword: Delays; Author-Supplied Keyword: hall thruster; Author-Supplied Keyword: HPHall; Author-Supplied Keyword: Numerical models; Author-Supplied Keyword: Oscillators; Author-Supplied Keyword: plume emission; Author-Supplied Keyword: Temperature measurement; Author-Supplied Keyword: Uncertainty; Author-Supplied Keyword: Xenon; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TPS.2014.2301038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94892209&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guenthner, Andrew J. AU - Vij, Vandana AU - Haddad, Timothy S. AU - Reams, Josiah T. AU - Lamison, Kevin R. AU - Sahagun, Christopher M. AU - Ramirez, Sean M. AU - Yandek, Gregory R. AU - Suri, Suresh C. AU - Mabry, Joseph M. T1 - Silicon-containing trifunctional and tetrafunctional cyanate esters: Synthesis, cure kinetics, and network properties. JO - Journal of Polymer Science Part A: Polymer Chemistry JF - Journal of Polymer Science Part A: Polymer Chemistry Y1 - 2014/03/15/ VL - 52 IS - 6 M3 - Article SP - 767 EP - 779 SN - 0887624X AB - ABSTRACT The synthesis and physical properties of new silicon-containing polyfunctional cyanate ester monomers methyl[tris(4-cyanatophenyl)]silane and tetrakis(4-cyanatophenyl)silane, as well as polycyanurate networks formed from these monomers are reported. The higher crosslinking functionality compared to di(cyanate ester) monomers enables much higher ultimate glass transition temperatures to be obtained as a result of thermal cyclotrimerization. The ability to reach complete conversion is greatly enhanced by cocure of the new monomers with di(cyanate ester) monomers such as 1,1-bis(4-cyanatophenyl)ethane. The presence of silicon in these polycyanurate networks imparts improved resistance to rapid oxidation at elevated temperatures, resulting in char yields as high as 70% under nitrogen and 56% in air in the best-performing networks. The water uptake in the silicon-containing networks examined is 4-6 wt % after 96 h of immersion at 85 °C, considerably higher than both carbon-containing and/or di(cyanate ester) analogs. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 767-779 [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Polymer Science Part A: Polymer Chemistry is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERIZATION -- Research KW - MONOMERS KW - RESEARCH KW - CROSSLINKED polymers KW - TRIMERIZATION KW - OXIDATION KW - GLASS transition temperature KW - curing of polymers KW - cyanate ester KW - differential scanning calorimetry (DSC) KW - high performance polymers KW - polycyanurate KW - silane KW - thermosets N1 - Accession Number: 94357676; Guenthner, Andrew J. 1 Vij, Vandana 2 Haddad, Timothy S. 2 Reams, Josiah T. 2 Lamison, Kevin R. 2 Sahagun, Christopher M. 3 Ramirez, Sean M. 2 Yandek, Gregory R. 1 Suri, Suresh C. 1 Mabry, Joseph M. 1; Affiliation: 1: Aerospace Systems Directorate, Air Force Research Laboratory 2: ERC Incorporated, Air Force Research Laboratory 3: National Research Council/Air Force Research Laboratory; Source Info: Mar2014, Vol. 52 Issue 6, p767; Subject Term: POLYMERIZATION -- Research; Subject Term: MONOMERS; Subject Term: RESEARCH; Subject Term: CROSSLINKED polymers; Subject Term: TRIMERIZATION; Subject Term: OXIDATION; Subject Term: GLASS transition temperature; Author-Supplied Keyword: curing of polymers; Author-Supplied Keyword: cyanate ester; Author-Supplied Keyword: differential scanning calorimetry (DSC); Author-Supplied Keyword: high performance polymers; Author-Supplied Keyword: polycyanurate; Author-Supplied Keyword: silane; Author-Supplied Keyword: thermosets; Number of Pages: 13p; Document Type: Article L3 - 10.1002/pola.27052 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94357676&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Min Lee, Kyung AU - Lynch, Brandon M. AU - Luchette, Paul AU - White, Timothy J. T1 - Photomechanical effects in liquid crystal polymer networks prepared with m-fluoroazobenzene. JO - Journal of Polymer Science Part A: Polymer Chemistry JF - Journal of Polymer Science Part A: Polymer Chemistry Y1 - 2014/03/15/ VL - 52 IS - 6 M3 - Article SP - 876 EP - 882 SN - 0887624X AB - ABSTRACT The photomechanical response and photochemistry of a conventional, unsubstituted azobenzene-functionalized liquid crystalline polymer network (azo-LCN) is contrasted to that of an analogous material prepared with meta-fluorinated azobenzene chromophores. The polydomain azo-LCN materials exhibit nearly identical thermomechanical and optical properties. Photomechanical characterization indicates that the fluorination of the azobenzene chromophore reduces the deflection of cantilevers composed of the materials by 50%, which spectroscopic analysis reveals is due to a reduction in the ability of this material to isomerize and potentially reorient. This work is further confirmation that the underlying photochemistry of azobenzene is a primary contributor to the generation of photomechanical work in these materials. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 876-882 [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Polymer Science Part A: Polymer Chemistry is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMER networks KW - RESEARCH KW - POLYMER liquid crystals KW - AZOBENZENE KW - CHROMOPHORES KW - PHOTOCHEMISTRY -- Research KW - FLUORINATION KW - azo polymers KW - azobenzene KW - isomer/isomerization KW - liquid-crystalline polymers (LCP) KW - photomechanical effects N1 - Accession Number: 94357668; Min Lee, Kyung 1,2 Lynch, Brandon M. 1 Luchette, Paul 3 White, Timothy J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base 2: Azimuth Corporation 3: AlphaMicron, Inc.; Source Info: Mar2014, Vol. 52 Issue 6, p876; Subject Term: POLYMER networks; Subject Term: RESEARCH; Subject Term: POLYMER liquid crystals; Subject Term: AZOBENZENE; Subject Term: CHROMOPHORES; Subject Term: PHOTOCHEMISTRY -- Research; Subject Term: FLUORINATION; Author-Supplied Keyword: azo polymers; Author-Supplied Keyword: azobenzene; Author-Supplied Keyword: isomer/isomerization; Author-Supplied Keyword: liquid-crystalline polymers (LCP); Author-Supplied Keyword: photomechanical effects; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1002/pola.27072 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94357668&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reshetnyak, V. Yu. AU - Pinkevych, I. P. AU - Sluckin, T. J. AU - Cook, G. AU - Evans, D. R. T1 - Beam coupling in hybrid photorefractive inorganic-cholesteric liquid crystal cells: Impact of optical rotation. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2014/03/14/ VL - 115 IS - 10 M3 - Article SP - 103103-1 EP - 103103-17 PB - American Institute of Physics SN - 00218979 AB - We develop a theoretical model to describe two-beam energy exchange in a hybrid photorefractive inorganic-cholesteric cell. A cholesteric layer is placed between two inorganic substrates. One of the substrates is photorefractive (Ce:SBN). Weak and strong light beams are incident on the hybrid cell. The interfering light beams induce a periodic space-charge field in the photorefractive window. This penetrates into the cholesteric liquid crystal (LC), inducing a diffraction grating written on the LC director. In the theory, the flexoelectric mechanism for electric field-director coupling is more important than the LC static dielectric anisotropy coupling. The LC optics is described in the Bragg regime. Each beam induces two circular polarized waves propagating in the cholesteric cell with different velocities. The model thus includes optical rotation in the cholesteric LC. The incident light beam wavelength can fall above, below, or inside the cholesteric gap. The theory calculates the energy gain of the weak beam, as a result of its interaction with the pump beam within the diffraction grating. Theoretical results for exponential gain coefficients are compared with experimental results for hybrid cells filled with cholesteric mixture BL038/CB15 at different concentrations of chiral agent CB15. Reconciliation between theory and experiment requires the inclusion of a phenomenological multiplier in the magnitude of the director grating. This multiplier is cubic in the space-charge field, and we provide a justification of the q-dependence of the multiplier. Within this paradigm, we are able to fit theory to experimental data for cholesteric mixtures with different spectral position of cholesteric gap relative to the wavelength of incident beams, subject to the use of some fitting parameters. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOREFRACTIVE materials KW - LIQUID crystals KW - OPTICAL rotation KW - ELECTRIC fields KW - DIFFRACTION gratings N1 - Accession Number: 95105868; Reshetnyak, V. Yu. 1 Pinkevych, I. P. 1 Sluckin, T. J. 2 Cook, G. 3 Evans, D. R. 3; Affiliation: 1: Physics Faculty, National Taras Shevchenko University of Kyiv, Volodymyrs'ka Street 64, Kyiv 01601, Ukraine 2: Division of Mathematical Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: 2014, Vol. 115 Issue 10, p103103-1; Subject Term: PHOTOREFRACTIVE materials; Subject Term: LIQUID crystals; Subject Term: OPTICAL rotation; Subject Term: ELECTRIC fields; Subject Term: DIFFRACTION gratings; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; Number of Pages: 17p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.4867479 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95105868&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martirosyan, Karen S. AU - Zyskin, Maxim AU - Jenkins, Charles M. AU - Yasuyuki (Yuki) Horie T1 - Fluid dynamic modeling of nano-thermite reactions. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2014/03/14/ VL - 115 IS - 10 M3 - Article SP - 104903-1 EP - 104903-5 PB - American Institute of Physics SN - 00218979 AB - This paper presents a direct numerical method based on gas dynamic equations to predict pressure evolution during the discharge of nanoenergetic materials. The direct numerical method provides for modeling reflections of the shock waves from the reactor walls that generates pressure-time fluctuations. The results of gas pressure prediction are consistent with the experimental evidence and estimates based on the self-similar solution. Artificial viscosity provides sufficient smoothing of shock wave discontinuity for the numerical procedure. The direct numerical method is more computationally demanding and flexible than self-similar solution, in particular it allows study of a shock wave in its early stage of reaction and allows the investigation of "slower" reactions, which may produce weaker shock waves. Moreover, numerical results indicate that peak pressure is not very sensitive to initial density and reaction time, providing that all the material reacts well before the shock wave arrives at the end of the reactor. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRESSURE KW - ISOBARIC processes KW - MATTER -- Properties KW - RHEOLOGY KW - DEFORMATIONS (Mechanics) N1 - Accession Number: 95105938; Martirosyan, Karen S. 1; Email Address: karen.martirosyan@utb.edu Zyskin, Maxim 2 Jenkins, Charles M. 3 Yasuyuki (Yuki) Horie 3; Affiliation: 1: Department of Physics and Astronomy, University of Texas, Brownsville, 80 Fort Brown, Brownsville, Texas 78520, USA 2: Rutgers University, 110 Frelinghusen Road, Piscataway, New Jersey 08854-8019, USA 3: Air Force Research Laboratory, Munitions Directorate, 2306 Perimeter Road, Eglin AFB, Florida 32542, USA; Source Info: 2014, Vol. 115 Issue 10, p104903-1; Subject Term: PRESSURE; Subject Term: ISOBARIC processes; Subject Term: MATTER -- Properties; Subject Term: RHEOLOGY; Subject Term: DEFORMATIONS (Mechanics); Number of Pages: 5p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.4867936 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95105938&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zocco, Adam T AU - You, Han AU - Hagen, Joshua A AU - Steckl, Andrew J T1 - Pentacene organic thin-film transistors on flexible paper and glass substrates. JO - Nanotechnology JF - Nanotechnology Y1 - 2014/03/07/ VL - 25 IS - 9 M3 - Article SP - 094005 EP - 094011 SN - 09574484 AB - Pentacene-based organic thin-film transistors (OTFTs) were fabricated on several types of flexible substrate: commercial photo paper, ultra-smooth specialty paper and ultra-thin (100 μM) flexible glass. The transistors were fabricated entirely through dry-step processing. The transconductance and field-effect mobility of OTFTs on photo paper reached values of ∼0.52 mS m−1 and ∼0.1 cm2 V −1 s−1, respectively. Preliminary results on the lifetime of OTFTs on photo paper yielded stable transconductance and mobility values over a period of more than 250 h. The comparable characteristics of OTFTs fabricated on widely available, low cost paper and high quality expensive liquid crystal display glass indicate the potential importance of cellulose-based electronic devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Nanotechnology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PENTACENE KW - ORGANIC thin films KW - GLASS KW - THIN film transistors KW - SUBSTRATES (Materials science) KW - MICROFABRICATION N1 - Accession Number: 94417557; Zocco, Adam T 1 You, Han 1 Hagen, Joshua A 2 Steckl, Andrew J 1; Email Address: a.steckl@uc.edu; Affiliation: 1: Nanoelectronics Laboratory, Department of Electrical Engineering and Computing Systems, University of Cincinnati, Cincinnati, OH 45221-0030, USA 2: US Air Force Research Laboratory, Human Effectiveness Directorate, Wright-Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: 3/7/2014, Vol. 25 Issue 9, p094005; Subject Term: PENTACENE; Subject Term: ORGANIC thin films; Subject Term: GLASS; Subject Term: THIN film transistors; Subject Term: SUBSTRATES (Materials science); Subject Term: MICROFABRICATION; NAICS/Industry Codes: 238150 Glass and Glazing Contractors; NAICS/Industry Codes: 327214 Glass manufacturing; NAICS/Industry Codes: 416340 Paint, glass and wallpaper merchant wholesalers; Number of Pages: 7p; Document Type: Article L3 - 10.1088/0957-4484/25/9/094005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94417557&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kelecy, Thomas AU - Jah, Moriba AU - Baldwin, Jason AU - Stauch, Jason T1 - High Area-to-Mass Ratio object population assessment from data/track association. JO - Acta Astronautica JF - Acta Astronautica Y1 - 2014/03// VL - 96 M3 - Article SP - 166 EP - 174 SN - 00945765 AB - Abstract: To date, the actual population of High Area-to-Mass Ratio (HAMR) objects in deep Space is still unquantified. These are objects having area-to-mass ratios (AMR's) in the range of around 0.1–20m2/kg and higher. Typical methods for population assessment using optical sensors either count the number of detections per unit time, or employ a disparate sequence of methods to compute HAMR object trajectories, where these methods assume linearized dynamics and fixed-gate correlations. This paper provides results from a set of actual angles (line of sight) data on HAMR objects, where the initial orbit determination and follow-on data/track association is performed probabilistically and autonomously. Moreover, the data are not only used to infer trajectories but also simultaneously exploited for their information content relating to each detected object's albedo-area-to-mass ratio. The results show that the inferred HAMR orbital elements and area-to-mass ratio values (CrA/m), parametrically, can be derived autonomously and without a priori knowledge of the orbit and CrA/m states. This will aid in the correlation of large numbers of uncorrelated tracks. [Copyright &y& Elsevier] AB - Copyright of Acta Astronautica is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORBITS KW - SURFACE area KW - OPTICAL sensors KW - ELECTRONIC data processing KW - SPACE trajectories KW - PROBABILITY theory KW - Constrained Admissible Region KW - High Area-to-Mass Ratio debris KW - Initial orbit determination. KW - Multiple Hypothesis Filter KW - Probabilistic data association KW - Track association N1 - Accession Number: 94049684; Kelecy, Thomas 1; Email Address: thomas.m.kelecy@boeing.com Jah, Moriba 2 Baldwin, Jason 3; Email Address: jbaldwin@schaferalb.com Stauch, Jason 3; Email Address: jstauch@schaferalb.com; Affiliation: 1: The Boeing Company, 5555 Tech Center Drive, Ste. 400, Colorado Springs, CO 80919, USA 2: Air Force Research Laboratory (RV), 3550 Aberdeen Ave., SE, Kirtland AFB, NM 87117, USA 3: Schafer Corp., 2309 Renard Place SE, Suite 300, Albuquerque, NM 87106, USA; Source Info: Mar2014, Vol. 96, p166; Subject Term: ORBITS; Subject Term: SURFACE area; Subject Term: OPTICAL sensors; Subject Term: ELECTRONIC data processing; Subject Term: SPACE trajectories; Subject Term: PROBABILITY theory; Author-Supplied Keyword: Constrained Admissible Region; Author-Supplied Keyword: High Area-to-Mass Ratio debris; Author-Supplied Keyword: Initial orbit determination.; Author-Supplied Keyword: Multiple Hypothesis Filter; Author-Supplied Keyword: Probabilistic data association; Author-Supplied Keyword: Track association; NAICS/Industry Codes: 518210 Data Processing, Hosting, and Related Services; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.actaastro.2013.11.037 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94049684&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shume, E. B. AU - Mannucci, A. J. AU - Caton, R. T1 - Phase and coherence analysis of VHF scintillation over Christmas Island. JO - Annales Geophysicae (09927689) JF - Annales Geophysicae (09927689) Y1 - 2014/03// VL - 32 IS - 3 M3 - Article SP - 293 EP - 300 SN - 09927689 AB - This short paper presents phase and coherence data from the cross-wavelet transform applied on longitudinally separated very high frequency (VHF) equatorial ionospheric scintillation observations over Christmas Island. The phase and coherence analyses were employed on a pair of scintillation observations, namely, the east-looking and westlooking VHF scintillation monitors at Christmas Island. Our analysis includes 3 years of peak season scintillation data from 2008, 2009 (low solar activity), and 2011 (moderate solar activity). In statistically significant and high spectral coherence regions of the cross-wavelet transform, scintillation observations from the east-looking monitor lead those from the west-looking monitor by about 20 to 60 (40±20) min (most frequent lead times). Using several years (seasons and solar cycle) of lead (or lag) and coherence information of the cross-wavelet transform, we envisage construction of a probability model for forecasting scintillation in the nighttime equatorial ionosphere. [ABSTRACT FROM AUTHOR] AB - Copyright of Annales Geophysicae (09927689) is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVELET transforms KW - VERY high frequencies KW - RADIO waves -- Scintillation KW - PLANETS -- Ionospheres KW - CHRISTMAS Island (Indian Ocean) KW - Ionosphere KW - ionospheric irregularities N1 - Accession Number: 97266371; Shume, E. B. 1; Email Address: esayas.b.shume@jpl.nasa.gov Mannucci, A. J. 1 Caton, R. 2; Affiliation: 1: Jet Propulsion Laboratory, California Institute of Technology, Pasadena CA, USA 2: Air Force Research Laboratory, Kirtland, NM, USA; Source Info: 2014, Vol. 32 Issue 3, p293; Subject Term: WAVELET transforms; Subject Term: VERY high frequencies; Subject Term: RADIO waves -- Scintillation; Subject Term: PLANETS -- Ionospheres; Subject Term: CHRISTMAS Island (Indian Ocean); Author-Supplied Keyword: Ionosphere; Author-Supplied Keyword: ionospheric irregularities; Number of Pages: 8p; Document Type: Article L3 - 10.5194/angeo-32-293-2014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97266371&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lipke, David W. AU - Ushakov, Sergey V. AU - Navrotsky, Alexandra AU - Hoffman, Wesley P. T1 - Ultra-high temperature oxidation of a hafnium carbide-based solid solution ceramic composite. JO - Corrosion Science JF - Corrosion Science Y1 - 2014/03// VL - 80 M3 - Article SP - 402 EP - 407 SN - 0010938X AB - Highlights: [•] Cr3C2 is a useful transient liquid phase sintering agent for carbide-based ceramics. [•] Low atomic mass cations (e.g., Cr or Ti) can rapidly diffuse through oxide scales. [•] Minor second phase additions can promote limited liquid formation for pore filling. [•] Oxycarbide interlayer may comprise nanocrystalline graphite in amorphous oxide. [ABSTRACT FROM AUTHOR] AB - Copyright of Corrosion Science is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH temperatures KW - OXIDATION KW - HAFNIUM compounds KW - SOLID solutions KW - CERAMIC materials KW - SINTERING KW - GRAPHITE KW - CHROMIUM compounds KW - A. Ceramic KW - C. High temperature corrosion KW - C. Oxidation N1 - Accession Number: 93590867; Lipke, David W. 1; Email Address: lipke@alfred.edu Ushakov, Sergey V. 2 Navrotsky, Alexandra 2 Hoffman, Wesley P. 1; Affiliation: 1: Air Force Research Laboratory, AFRL/RQRC, Edwards AFB, CA 93524, USA 2: Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California at Davis, Davis, CA 95616, USA; Source Info: Mar2014, Vol. 80, p402; Subject Term: HIGH temperatures; Subject Term: OXIDATION; Subject Term: HAFNIUM compounds; Subject Term: SOLID solutions; Subject Term: CERAMIC materials; Subject Term: SINTERING; Subject Term: GRAPHITE; Subject Term: CHROMIUM compounds; Author-Supplied Keyword: A. Ceramic; Author-Supplied Keyword: C. High temperature corrosion; Author-Supplied Keyword: C. Oxidation; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; NAICS/Industry Codes: 212210 Iron Ore Mining; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.corsci.2013.11.049 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93590867&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aguilar, Suzette M. AU - Al-Joumayly, Mudar A. AU - Burfeindt, Matthew J. AU - Behdad, Nader AU - Hagness, Susan C. T1 - Multiband Miniaturized Patch Antennas for a Compact, Shielded Microwave Breast Imaging Array. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2014/03// VL - 62 IS - 3 M3 - Article SP - 1221 EP - 1231 SN - 0018926X AB - We present a comprehensive study of a class of multiband miniaturized patch antennas designed for use in a 3-D enclosed sensor array for microwave breast imaging. Miniaturization and multiband operation are achieved by loading the antenna with nonradiating slots at strategic locations along the patch. This results in symmetric radiation patterns and similar radiation characteristics at all frequencies of operation. Prototypes were fabricated and tested in a biocompatible immersion medium. Excellent agreement was obtained between simulations and measurements. The tradeoff between miniaturization and radiation efficiency within this class of patch antennas is explored via a numerical analysis of the effects of the location and number of slots, as well as the thickness and permittivity of the dielectric substrate, on the resonant frequencies and gain. Additionally, we compare 3-D quantitative microwave breast imaging performance achieved with two different enclosed arrays of slot-loaded miniaturized patch antennas. Simulated array measurements were obtained for a 3-D anatomically realistic numerical breast phantom. The reconstructed breast images generated from miniaturized patch array data suggest that, for the realistic noise power levels assumed in this study, the variations in gain observed across this class of multiband patch antennas do not significantly impact the overall image quality. We conclude that these miniaturized antennas are promising candidates as compact array elements for shielded, multifrequency microwave breast imaging systems. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRIP antennas KW - RESEARCH KW - MICROWAVE imaging in medicine KW - BREAST -- Imaging KW - ANTENNAS (Electronics) KW - DIAGNOSTIC imaging -- Research KW - Antenna measurements KW - Arrays KW - Breast KW - Microstrip antennas KW - Microwave antenna arrays KW - microwave breast imaging KW - Microwave imaging KW - miniaturized antennas KW - multiband antennas KW - Patch antennas KW - Resonant frequency KW - slot-loading N1 - Accession Number: 94764026; Aguilar, Suzette M. 1 Al-Joumayly, Mudar A. 2 Burfeindt, Matthew J. 3 Behdad, Nader 4 Hagness, Susan C. 4; Affiliation: 1: Motorola Mobility, Inc, Libertyville, IL, USA 2: TriQuint Semiconductor, Apopka, FL, USA 3: Eglin AFB, Air Force Research Laboratory, FL, USA 4: Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI, USA; Source Info: Mar2014, Vol. 62 Issue 3, p1221; Subject Term: MICROSTRIP antennas; Subject Term: RESEARCH; Subject Term: MICROWAVE imaging in medicine; Subject Term: BREAST -- Imaging; Subject Term: ANTENNAS (Electronics); Subject Term: DIAGNOSTIC imaging -- Research; Author-Supplied Keyword: Antenna measurements; Author-Supplied Keyword: Arrays; Author-Supplied Keyword: Breast; Author-Supplied Keyword: Microstrip antennas; Author-Supplied Keyword: Microwave antenna arrays; Author-Supplied Keyword: microwave breast imaging; Author-Supplied Keyword: Microwave imaging; Author-Supplied Keyword: miniaturized antennas; Author-Supplied Keyword: multiband antennas; Author-Supplied Keyword: Patch antennas; Author-Supplied Keyword: Resonant frequency; Author-Supplied Keyword: slot-loading; NAICS/Industry Codes: 621512 Diagnostic Imaging Centers; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TAP.2013.2295615 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94764026&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Williams, Dylan F. AU - Corson, Phillip AU - Sharma, Jahnavi AU - Krishnaswamy, Harish AU - Tai, Wei AU - George, Zacharias AU - Ricketts, David S. AU - Watson, Paul M. AU - Dacquay, Eric AU - Voinigescu, Sorin P. T1 - Calibrations for Millimeter-Wave Silicon Transistor Characterization. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques Y1 - 2014/03// VL - 62 IS - 3 M3 - Article SP - 658 EP - 668 SN - 00189480 AB - This paper compares on-wafer thru-reflect-line (TRL) and off-wafer short-open-load-thru (SOLT) and line-reflect-reflect-match (LRRM) vector-network-analyzer probe-tip calibrations for amplifier characterization and parasitic-extraction calibrations for transistor characterization on silicon integrated circuits at millimeter-wave frequencies. We show that on-wafer calibrations generally outperform off-wafer and LRRM probe-tip calibrations at millimeter-wave frequencies. However, certain parasitic-extraction algorithms designed specifically to remove contact pads, transmission-lines, and access vias correct for much of the error in off-wafer calibrations. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC network analyzers KW - POWER amplifiers KW - INTEGRATED circuits KW - FIELD-effect transistors KW - ELECTRIC lines KW - ELECTRIC measurements KW - Calibration KW - measurement KW - millimeter wave KW - Power transmission lines KW - Probes KW - scattering parameters KW - Silicon KW - Substrates KW - transistor KW - Transistors KW - Transmission line measurements KW - vector network analyzer (VNA) N1 - Accession Number: 94842647; Williams, Dylan F. 1 Corson, Phillip 2 Sharma, Jahnavi 3 Krishnaswamy, Harish 3 Tai, Wei 4 George, Zacharias 4 Ricketts, David S. 4 Watson, Paul M. 5 Dacquay, Eric 6 Voinigescu, Sorin P. 6; Affiliation: 1: National Institute of Standards and Technology, Boulder, CO, USA 2: IBM Semiconductor Research and Development Center, Essex Junction, 3: Department of Electrical Engineering, Columbia University, New York, New York, USA 4: Electrical and Computer Engineering Department, Carnegie Mellon University, Pittsburgh, PA, USA 5: Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio, USA 6: Electrical and Computer Engineering Department, University of Toronto, Toronto, Canada; Source Info: Mar2014, Vol. 62 Issue 3, p658; Subject Term: ELECTRIC network analyzers; Subject Term: POWER amplifiers; Subject Term: INTEGRATED circuits; Subject Term: FIELD-effect transistors; Subject Term: ELECTRIC lines; Subject Term: ELECTRIC measurements; Author-Supplied Keyword: Calibration; Author-Supplied Keyword: measurement; Author-Supplied Keyword: millimeter wave; Author-Supplied Keyword: Power transmission lines; Author-Supplied Keyword: Probes; Author-Supplied Keyword: scattering parameters; Author-Supplied Keyword: Silicon; Author-Supplied Keyword: Substrates; Author-Supplied Keyword: transistor; Author-Supplied Keyword: Transistors; Author-Supplied Keyword: Transmission line measurements; Author-Supplied Keyword: vector network analyzer (VNA); NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238910 Site Preparation Contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TMTT.2014.2300839 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94842647&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Xu, Yunjun AU - Remeikas, Charles AU - Pham, Khanh T1 - Local pursuit strategy-inspired cooperative trajectory planning algorithm for a class of nonlinear constrained dynamical systems. JO - International Journal of Control JF - International Journal of Control Y1 - 2014/03// VL - 87 IS - 3 M3 - Article SP - 506 EP - 523 SN - 00207179 AB - Cooperative trajectory planning is crucial for networked vehicles to respond rapidly in cluttered environments and has a significant impact on many applications such as air traffic or border security monitoring and assessment. One of the challenges in cooperative planning is to find a computationally efficient algorithm that can accommodate both the complexity of the environment and real hardware and configuration constraints of vehicles in the formation. Inspired by a local pursuit strategy observed in foraging ants, feasible and optimal trajectory planning algorithms are proposed in this paper for a class of nonlinear constrained cooperative vehicles in environments with densely populated obstacles. In an iterative hierarchical approach, the local behaviours, such as the formation stability, obstacle avoidance, and individual vehicle's constraints, are considered in each vehicle's (i.e. follower's) decentralised optimisation. The cooperative-level behaviours, such as the inter-vehicle collision avoidance, are considered in the virtual leader's centralised optimisation. Early termination conditions are derived to reduce the computational cost by not wasting time in the local-level optimisation if the virtual leader trajectory does not satisfy those conditions. The expected advantages of the proposed algorithms are (1) the formation can be globally asymptotically maintained in a decentralised manner; (2) each vehicle decides its local trajectory using only the virtual leader and its own information; (3) the formation convergence speed is controlled by one single parameter, which makes it attractive for many practical applications; (4) nonlinear dynamics and many realistic constraints, such as the speed limitation and obstacle avoidance, can be easily considered; (5) inter-vehicle collision avoidance can be guaranteed in both the formation transient stage and the formation steady stage; and (6) the computational cost in finding both the feasible and optimal solutions is low. In particular, the feasible solution can be computed in a very quick fashion. The minimum energy trajectory planning for a group of robots in an obstacle-laden environment is simulated to showcase the advantages of the proposed algorithms. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Control is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRATEGIC planning KW - ALGORITHMS KW - DYNAMICAL systems KW - NONLINEAR systems KW - AIR traffic KW - BORDER security KW - Bio-inspired control KW - cooperative control KW - nonlinear constrained optimisation N1 - Accession Number: 94240830; Xu, Yunjun 1 Remeikas, Charles 1 Pham, Khanh 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, University of Central Florida, Orlando, FL, USA 2: Air Force Research Laboratory – Space Vehicles Directorate, Kirtland Air Force Base, Albuquerque, NM, USA; Source Info: Mar2014, Vol. 87 Issue 3, p506; Subject Term: STRATEGIC planning; Subject Term: ALGORITHMS; Subject Term: DYNAMICAL systems; Subject Term: NONLINEAR systems; Subject Term: AIR traffic; Subject Term: BORDER security; Author-Supplied Keyword: Bio-inspired control; Author-Supplied Keyword: cooperative control; Author-Supplied Keyword: nonlinear constrained optimisation; Number of Pages: 18p; Document Type: Article L3 - 10.1080/00207179.2013.845911 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94240830&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Niedbalski, Nicholas AU - Johnson, Douglas AU - Patnaik, Soumya S. AU - Banerjee, Debjyoti T1 - Study of a multi-phase hybrid heat exchanger-reactor (HEX reactor): Part I – Experimental characterization. JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2014/03// VL - 70 M3 - Article SP - 1078 EP - 1085 SN - 00179310 AB - Abstract: This study focuses on gaining fundamental insights into the sparsely explored area of reacting multiphase flows in a compact heat exchanger. Chevron plate heat exchangers have been demonstrated to possess superior thermal performance, scalability, and mixing capability compared to more traditional shell-in-tube heat exchangers or stirred tank batch reactors. This study explores the hydrodynamic behavior of gas-evolving reacting flows in chevron plate heat exchangers. Experimental characterization of a plate heat exchanger/chemical reactor (in multi-phase flow configuration) utilizing high-speed video and axial pressure measurements was conducted. Existing correlations that were developed using air–water flow in PHEs predicted with acceptable accuracy the total pressure drop in the HEX reactor. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIPHASE flow KW - HEAT exchangers KW - CHEMICAL reactors KW - CHEMISTRY experiments KW - PERFORMANCE evaluation KW - THERMAL analysis KW - BATCH reactors KW - Flow visualization KW - HEX reactor KW - Multi-phase flow KW - Plate heat exchanger KW - Reacting flow N1 - Accession Number: 93701654; Niedbalski, Nicholas 1,2; Email Address: nickgonzaga@me.com Johnson, Douglas 3 Patnaik, Soumya S. 1 Banerjee, Debjyoti 2; Affiliation: 1: Air Force Research Laboratory, Aerospace Systems Directorate, Power and Controls Division, Mechanical and Thermal Systems Branch, 1950 5th St., WPAFB, OH 45433, United States 2: Texas A&M University, Department of Mechanical Engineering, 3123 TAMU, College Station, TX 77843, United States 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, United States; Source Info: Mar2014, Vol. 70, p1078; Subject Term: MULTIPHASE flow; Subject Term: HEAT exchangers; Subject Term: CHEMICAL reactors; Subject Term: CHEMISTRY experiments; Subject Term: PERFORMANCE evaluation; Subject Term: THERMAL analysis; Subject Term: BATCH reactors; Author-Supplied Keyword: Flow visualization; Author-Supplied Keyword: HEX reactor; Author-Supplied Keyword: Multi-phase flow; Author-Supplied Keyword: Plate heat exchanger; Author-Supplied Keyword: Reacting flow; NAICS/Industry Codes: 332410 Power Boiler and Heat Exchanger Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2013.10.066 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93701654&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Niedbalski, Nicholas AU - Johnson, Douglas AU - Patnaik, Soumya S. AU - Banerjee, Debjyoti T1 - Study of a multi-phase hybrid heat exchanger-reactor (HEX reactor): Part II – Numerical prediction of thermal performance. JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2014/03// VL - 70 M3 - Article SP - 1086 EP - 1094 SN - 00179310 AB - Abstract: Numerical models were developed to assess the thermal performance of a HEX reactor with solid-to-gas reacting flow. Based on the experimental results obtained in part I of this study, numerical models were developed to predict the thermal performance of a plate heat exchanger-based HEX reactor involving multi-phase flow with chemical reactions. A reduced-order numerical model of a chevron plate heat exchanger was developed with thermal and momentum transfer analogies. Empirical correlations for momentum transfer and void fraction (validated in part I of this study) were implemented in the numerical model. The numerical model, coded in Maple 13™, was used to size a compact reactor with a thermal load rating of 2kW for the desired operating temperature; the modeling framework developed can also be used to study different candidate gas-generating reacting species, working fluids, and PHE configurations. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIPHASE flow KW - HEAT exchangers KW - CHEMICAL reactors KW - NUMERICAL analysis KW - PREDICTION theory KW - THERMAL analysis KW - PERFORMANCE evaluation KW - Ammonium carbamate KW - HEX reactor KW - Multi-phase flow KW - Plate heat exchanger KW - Reacting flow KW - Thermal management N1 - Accession Number: 93701655; Niedbalski, Nicholas 1,2; Email Address: nickgonzaga@me.com Johnson, Douglas 3 Patnaik, Soumya S. 1 Banerjee, Debjyoti 2; Affiliation: 1: Air Force Research Laboratory, Aerospace Systems Directorate, Power and Controls Division, Mechanical and Thermal Systems Branch, 1950 5th St., Wright-Patterson AFB, OH 45433, United States 2: Texas A&M University, Department of Mechanical Engineering, 3123 TAMU, College Station, TX 77843, United States 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, United States; Source Info: Mar2014, Vol. 70, p1086; Subject Term: MULTIPHASE flow; Subject Term: HEAT exchangers; Subject Term: CHEMICAL reactors; Subject Term: NUMERICAL analysis; Subject Term: PREDICTION theory; Subject Term: THERMAL analysis; Subject Term: PERFORMANCE evaluation; Author-Supplied Keyword: Ammonium carbamate; Author-Supplied Keyword: HEX reactor; Author-Supplied Keyword: Multi-phase flow; Author-Supplied Keyword: Plate heat exchanger; Author-Supplied Keyword: Reacting flow; Author-Supplied Keyword: Thermal management; NAICS/Industry Codes: 332410 Power Boiler and Heat Exchanger Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2013.10.067 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93701655&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Luo, Huiyang AU - Cooper, William L. AU - Lu, Hongbing T1 - Effects of particle size and moisture on the compressive behavior of dense Eglin sand under confinement at high strain rates. JO - International Journal of Impact Engineering JF - International Journal of Impact Engineering Y1 - 2014/03// VL - 65 M3 - Article SP - 40 EP - 55 SN - 0734743X AB - Abstract: The dynamic compressive behavior of sorted and unsorted Eglin sand (Quikrete #1961 sand quarried in Pensacola, FL) under confinement was characterized under dry or moisture conditions at strain rates near 600 s−1 using a long split Hopkinson pressure bar, respectively. The as-received unsorted sand was sorted into grain sizes of 0.60 mm, 0.50 mm, 0.42 mm, 0.30 mm, 0.212 mm, 0.15 mm, 0.106 mm and 0.053 mm. For preparation of a partially saturated sand specimen sealed in a sand specimen assembly, water was introduced to reach moisture contents of 0%, 4.2%, 8.2%, 12.4%, 14.4% and 16.5%. A sand specimen assembly was used, and sand grains were confined inside a hollow cylinder of hardened steel and capped by cemented tungsten carbide rods. The assembly was subjected to repeat manual shaking and tapping to consolidate the sand to attain a given mass density; it was then sandwiched between incident and transmission bars for compression under a high strain rate. The volumetric and deviatoric behavior of dense Eglin sand was investigated on eight sorted sand specimens and at six moisture contents. After impact, the sand was analyzed to determine the particle size distribution, which was found to follow Weibull distribution rather than Gaussian distribution. The breakage factor was found to follow a linear relationship with moisture content. The effect of initial particle size and moisture on the volumetric and deviatoric behavior of sand was discussed. The compressibility was characterized in terms of void ratio as a function of axial pressure. The specific energy absorption and shear stress–hydrostatic pressure ationships were determined for different grain sizes and moisture contents. [Copyright &y& Elsevier] AB - Copyright of International Journal of Impact Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLE size distribution KW - MOISTURE KW - COMPRESSIVE strength KW - SAND KW - STRAINS & stresses (Mechanics) KW - VOLUMETRIC analysis KW - WEIBULL distribution KW - Confinement KW - Dynamic compaction of sand KW - High-strain rate KW - Moisture KW - Particle size N1 - Accession Number: 94308051; Luo, Huiyang 1 Cooper, William L. 2 Lu, Hongbing 1; Email Address: hongbing.lu@utdallas.edu; Affiliation: 1: Department of Mechanical Engineering, The University of Texas at Dallas, Richardson, TX 75080, USA 2: Air Force Research Laboratory, Kirkland Air Force Base, NM 87117, USA; Source Info: Mar2014, Vol. 65, p40; Subject Term: PARTICLE size distribution; Subject Term: MOISTURE; Subject Term: COMPRESSIVE strength; Subject Term: SAND; Subject Term: STRAINS & stresses (Mechanics); Subject Term: VOLUMETRIC analysis; Subject Term: WEIBULL distribution; Author-Supplied Keyword: Confinement; Author-Supplied Keyword: Dynamic compaction of sand; Author-Supplied Keyword: High-strain rate; Author-Supplied Keyword: Moisture; Author-Supplied Keyword: Particle size; NAICS/Industry Codes: 416390 Other specialty-line building supplies merchant wholesalers; NAICS/Industry Codes: 423320 Brick, Stone, and Related Construction Material Merchant Wholesalers; NAICS/Industry Codes: 484222 Dry bulk materials trucking, local; NAICS/Industry Codes: 484232 Dry bulk materials trucking, long distance; NAICS/Industry Codes: 212321 Construction Sand and Gravel Mining; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.ijimpeng.2013.11.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94308051&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Misak, H.E. AU - Asmatulu, R. AU - O’Malley, M. AU - Jurak, E. AU - Mall, S. T1 - Functionalization of carbon nanotube yarn by acid treatment. JO - International Journal of Smart & Nano Materials JF - International Journal of Smart & Nano Materials Y1 - 2014/03// VL - 5 IS - 1 M3 - Article SP - 34 EP - 43 SN - 19475411 AB - Carbon nanotube (CNT) yarn was functionalized using sulfuric and nitric acid solutions in 3:1 volumetric ratio. Successful functionalization of CNT yarn with carboxyl and hydroxyl groups (e.g., COOH, COO–, OH, etc.) was confirmed by attenuated total reflectance spectroscopy. X-ray diffraction revealed no significant change to the atomic in-plane alignment in the CNTs; however, the coherent length along the diameter was significantly reduced during functionalization. A morphology change of wavy extensions protruding from the surface was observed after the functionalization treatment. The force required to fracture the yarn remained the same after the functionalization process; however, the linear density was increased (310%). The increase in linear density after functionalization reduced the tenacity. However, the resistivity density product of the CNT yarn was reduced significantly (234%) after functionalization. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Smart & Nano Materials is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - X-ray diffraction KW - NITRIC acid KW - VOLUMETRIC analysis KW - CARBOXYL group KW - carbon nanotube yarns KW - conductivity KW - functionalization KW - textile N1 - Accession Number: 95477019; Misak, H.E. 1 Asmatulu, R. 2 O’Malley, M. 3 Jurak, E. 2 Mall, S. 1; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology, 2950 Hobson Way,Wright-Patterson AFB, OH45433-7765, USA 2: Department of Mechanical Engineering, Wichita State University, 1845 Fairmount,Wichita, KS67260-0133, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, 2941 Hobson Way,Wright-Patterson AFB, OH45433-7750, USA; Source Info: Mar2014, Vol. 5 Issue 1, p34; Subject Term: CARBON nanotubes; Subject Term: X-ray diffraction; Subject Term: NITRIC acid; Subject Term: VOLUMETRIC analysis; Subject Term: CARBOXYL group; Author-Supplied Keyword: carbon nanotube yarns; Author-Supplied Keyword: conductivity; Author-Supplied Keyword: functionalization; Author-Supplied Keyword: textile; NAICS/Industry Codes: 325311 Nitrogenous Fertilizer Manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1080/19475411.2014.896426 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95477019&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pakmehr, Mehrdad AU - Fitzgerald, Nathan AU - Feron, Eric M. AU - Shamma, Jeff S. AU - Behbahani, Alireza T1 - Gain Scheduled Control of Gas Turbine Engines: Stability and Verification. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2014/03// VL - 136 IS - 3 M3 - Article SP - 1 EP - 15 SN - 07424795 AB - A stable gain scheduled controller for a gas turbine engine that drives a variable pitch propeller is developed and described. A stability proof is developed for gain scheduled closed-loop system using global linearization and linear matrix inequality (LMI) techniques. Using convex optimization tools, a single quadratic Lyapunov function is computed for multiple linearizations near equilibrium and nonequilibrium points of the nonlinear closed-loop system. This approach guarantees stability of the closed-loop gas turbine engine system. To verify the stability of the closed-loop system on-line, an optimization problem is proposed, which is solvable using convex optimization tools. Simulation results show that the developed gain scheduled controller is capable to regulate a turboshaft engine for large thrust commands in a stable fashion with proper tracking performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS turbines KW - LYAPUNOV functions KW - PROPELLERS KW - DIFFERENTIAL equations KW - CLOSED loop systems KW - AIRPLANES -- Motors N1 - Accession Number: 94442692; Pakmehr, Mehrdad 1; Email Address: mehrdad.pakmehr@gatech.edu Fitzgerald, Nathan 2; Email Address: nfitz@alum.mit.edu Feron, Eric M. 3; Email Address: feron@gatech.edu Shamma, Jeff S. 4; Email Address: shamma@gatech.edu Behbahani, Alireza 5; Email Address: alireza.behbahani@wpafb.af.mil; Affiliation: 1: School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA 30332 2: Propulsion Development Engineer Aurora Flight Sciences Corporation, Manassas, VA 20110 3: Professor, School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA 30332 4: Professor, School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30332 5: Senior Aerospace Engineer, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433; Source Info: Mar2014, Vol. 136 Issue 3, p1; Subject Term: GAS turbines; Subject Term: LYAPUNOV functions; Subject Term: PROPELLERS; Subject Term: DIFFERENTIAL equations; Subject Term: CLOSED loop systems; Subject Term: AIRPLANES -- Motors; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 15p; Document Type: Article L3 - 10.1115/1.4025637 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94442692&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, Haibiao AU - Parthasarathy, Triplicane A. AU - Cinibulk, Michael K. AU - Chen, Ming-Yung T1 - Processing, Characterization, and Modeling of Room-Temperature-Vulcanized Silicone-Derived Ceramic Foams. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2014/03// VL - 97 IS - 3 M3 - Article SP - 733 EP - 741 PB - Wiley-Blackwell SN - 00027820 AB - A novel method was developed to produce ceramic foams from a silicone precursor which was foamed and vulcanized at room temperature. Silicone foams were prepared by platinum-catalyzed cross-linking and dehydrogenation of reactive polysiloxanes. Silicone foams were converted to ceramic foams after being pyrolyzed at 1200°C in argon. Near-net-shape polymer-to-ceramic conversion was achieved when SiC particles were added to the polymer as a solid filler. A simple physical model was created to describe the rising and pyrolysis of the silicone foam, and was validated by experimental data. Foam density was largely dependent on the content of ethanol, which was used as a chemical blowing agent. Up to 1.8 wt% ethanol was effective in driving foam rising without leading to foam collapse. SiC filler helped reduce weight loss and volumetric shrinkage during pyrolysis, and slightly increased foam density. Scanning electron microscopy indicated that although incorporating a solid filler helps to reduce the bulk shrinkage, it cannot prevent local microcracking and residual porosity. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL processes KW - SILICONES KW - CERAMICS -- Research KW - METAL foams KW - PLATINUM catalysts KW - SILOXANES N1 - Accession Number: 94777095; Chen, Haibiao 1,2 Parthasarathy, Triplicane A. 1,2 Cinibulk, Michael K. 1 Chen, Ming-Yung 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base 2: UES Inc.; Source Info: Mar2014, Vol. 97 Issue 3, p733; Subject Term: CHEMICAL processes; Subject Term: SILICONES; Subject Term: CERAMICS -- Research; Subject Term: METAL foams; Subject Term: PLATINUM catalysts; Subject Term: SILOXANES; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1111/jace.12754 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94777095&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hay, R.S. AU - Boakye, E.E. AU - Mogilevsky, P. T1 - Transformation plasticity in TbPO4 and (Gd,Dy)PO4 orthophosphates during indentation of polycrystalline specimens. JO - Journal of the European Ceramic Society JF - Journal of the European Ceramic Society Y1 - 2014/03// VL - 34 IS - 3 M3 - Article SP - 773 EP - 781 SN - 09552219 AB - Abstract: Phase transformations and deformation mechanisms were characterized in polycrystalline rare-earth orthophosphates by SEM and TEM after indentation. Xenotime-phase pellets with TbPO4 and (Gd X ,Dy1−X )PO4 compositions close to the monazite stability field were softer than DyPO4 compositions far from the monazite stability field, or monazite-phase GdPO4 compositions. Transformation to monazite was observed by TEM beneath indents in TbPO4. Grains with alternating (010) anhydrite and {010} xenotime lamellae were adjacent to areas that transformed to monazite. Pressure and/or shear stress in xenotime may cause three phase transformations: xenotime→monazite, xenotime→anhydrite, and anhydrite→monazite. These transformations were not observed in indented DyPO4 xenotime. Large displacement rebounds in some indentation load–displacement curves suggest that at least one of these transformations is ferroelastic. The phase transformations and material softening are consistent with previous observations made for sheared (Gd0.4,Dy0.6)PO4 xenotime fiber coatings. [Copyright &y& Elsevier] AB - Copyright of Journal of the European Ceramic Society is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEAD compounds KW - PHASE transformations (Physics) KW - PLASTICITY KW - ORTHOPHOSPHATES KW - INDENTATION (Materials science) KW - POLYCRYSTALS KW - Indentation KW - Oxides KW - Phase transformations KW - Phosphates KW - TEM N1 - Accession Number: 92641429; Hay, R.S. 1; Email Address: Randall.Hay@wpafb.af.mil Boakye, E.E. 2 Mogilevsky, P. 2; Affiliation: 1: Air Force Research Laboratory, Materials Directorate, WPAFB, Dayton, OH 45433, United States 2: UES Inc., Dayton, OH 45432, United States; Source Info: Mar2014, Vol. 34 Issue 3, p773; Subject Term: LEAD compounds; Subject Term: PHASE transformations (Physics); Subject Term: PLASTICITY; Subject Term: ORTHOPHOSPHATES; Subject Term: INDENTATION (Materials science); Subject Term: POLYCRYSTALS; Author-Supplied Keyword: Indentation; Author-Supplied Keyword: Oxides; Author-Supplied Keyword: Phase transformations; Author-Supplied Keyword: Phosphates; Author-Supplied Keyword: TEM; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jeurceramsoc.2013.09.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92641429&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Reimnitz, Patrick J. T1 - FISH OUT OF WATER: THE BOOK OF JONAH AMONG THE MINOR PROPHETS. JO - Journal of Theta Alpha Kappa JF - Journal of Theta Alpha Kappa Y1 - 2014///Spring2014 VL - 38 IS - 1 M3 - Essay SP - 20 EP - 36 SN - 87564785 AB - An essay is presented that investigates the phenomenon of literary prophecy and the formation of the Book of the Twelve of the Old Testament. It argues the Qumran scroll as an agreement which moved Jonah to the conclusion of Minor Prophets. It explores the message of the book as a unity and the theological role of Jonah to variant arrangements. It also discusses the literary in Israel where its prophetic tradition spans its history as a country. KW - PROPHECY -- Christianity KW - RELIGION -- History KW - QUMRAN Site (West Bank) KW - ISRAEL KW - BIBLE. Jonah KW - BIBLE. Minor Prophets N1 - Accession Number: 95292119; Reimnitz, Patrick J. 1,2; Affiliation: 1: Major, United States Air Force 2: Adjunct Professor of Religion, Park University; Source Info: Spring2014, Vol. 38 Issue 1, p20; Subject Term: PROPHECY -- Christianity; Subject Term: RELIGION -- History; Subject Term: QUMRAN Site (West Bank); Subject Term: ISRAEL; Reviews & Products: BIBLE. Jonah; Reviews & Products: BIBLE. Minor Prophets; Number of Pages: 17p; Document Type: Essay UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95292119&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guthrie, O'neil W. AU - Xu, Helen AU - Wong, Brian A. AU - McInturf, Shawn M. AU - Reboulet, Jim E. AU - Ortiz, Pedro A. AU - Mattie, David R. T1 - Exposure to Low Levels of Jet-Propulsion Fuel Impairs Brainstem Encoding of Stimulus Intensity. JO - Journal of Toxicology & Environmental Health: Part A JF - Journal of Toxicology & Environmental Health: Part A Y1 - 2014/03// VL - 77 IS - 5 M3 - Article SP - 261 EP - 280 SN - 15287394 AB - Jet propulsion fuel-8 (JP-8) is a kerosene-based fuel that is used in military jets. The U.S. Armed Services and North Atlantic Treaty Organization countries adopted JP-8 as a standard fuel source and the U.S. military alone consumes more than 2.5 billion gallons annually. Preliminary epidemiologic data suggested that JP-8 may interact with noise to induce hearing loss, and animal studies revealed damage to presynaptic sensory cells in the cochlea. In the current study, Long-Evans rats were divided into four experimental groups: control, noise only, JP-8 only, and JP-8 + noise. A subototoxic level of JP-8 was used alone or in combination with a nondamaging level of noise. Functional and structural assays of the presynaptic sensory cells combined with neurophysiologic studies of the cochlear nerve revealed that peripheral auditory function was not affected by individual exposures and there was no effect when the exposures were combined. However, the central auditory nervous system exhibited impaired brainstem encoding of stimulus intensity. These findings may represent important and major shifts in the theoretical framework that governs current understanding of jet fuel and/or jet fuel + noise-induced ototoxicity. From an epidemiologic perspective, results indicate that jet fuel exposure may exert consequences on auditory function that may be more widespread and insidious than what was previously shown. It is possible that a large population of military personnel who are suffering from the effects of jet fuel exposure may be misidentified because they would exhibit normal hearing thresholds but harbor a “hidden” brainstem dysfunction. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Toxicology & Environmental Health: Part A is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JET propulsion KW - JET planes -- Fuel KW - KEROSENE as fuel KW - BRAIN stem KW - NORTH Atlantic Treaty Organization N1 - Accession Number: 94757952; Guthrie, O'neil W. 1,2; Email Address: O'neil.Guthrie@va.gov Xu, Helen 2 Wong, Brian A. 3 McInturf, Shawn M. 3 Reboulet, Jim E. 3 Ortiz, Pedro A. 3 Mattie, David R. 4; Affiliation: 1: Research Service-151, Loma Linda Veterans Affairs Medical Center, Loma Linda, California, USA 2: Department of Otolaryngology and Head & Neck Surgery, School of Medicine, Loma Linda University Medical Center, Loma Linda, California, USA 3: Naval Medical Research Unit–Dayton, Wright-Patterson, Air Force Base, Ohio, USA 4: Molecular Bioeffects Branch, Bioeffects Division, 711 Human Performance Wing, Human Effectiveness Directorate, Air Force Research Laboratory (711 HPW/RHDJ), Wright-Patterson Air Force Base, Ohio, USA; Source Info: Mar2014, Vol. 77 Issue 5, p261; Subject Term: JET propulsion; Subject Term: JET planes -- Fuel; Subject Term: KEROSENE as fuel; Subject Term: BRAIN stem; Company/Entity: NORTH Atlantic Treaty Organization; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 20p; Document Type: Article L3 - 10.1080/15287394.2013.862892 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94757952&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chatterjee, Kausik AU - Roadcap, John R. AU - Singh, Surendra T1 - A new Green's function Monte Carlo algorithm for the solution of the three-dimensional nonlinear Poisson-Boltzmann equation: Application to the modeling of plasma sheath layers. JO - Monte Carlo Methods & Applications JF - Monte Carlo Methods & Applications Y1 - 2014/03// VL - 20 IS - 1 M3 - Article SP - 53 EP - 59 SN - 09299629 AB - The objective of this paper is the exposition of a recently-developed Green's function Monte Carlo (GFMC) algorithm for the solution of nonlinear partial differential equations and its application to the modeling of the plasma sheath region around a spherical conducting object, carrying a potential and moving at low speeds through a partially ionized medium. The plasma sheath is modeled in equilibrium through the GFMC solution of the nonlinear Poisson-Boltzmann (NPB) equation. The traditional GFMC-based approaches for the solution of nonlinear equations involve the iterative solution of a series of linear problems. Over the last several years, one of the authors of this paper, K. Chatterjee, has been developing a philosophically different approach, where the linearization of the equation of interest is not required and hence there is no need for iteration. Instead, an approximate expression for the Green's function is obtained using perturbation theory, which is used to formulate the random walk equations within the problem sub-domains, where the random-walker makes its walks. On the other hand, as a trade-off, the dimensions of these sub-domains have to be restricted by the limitations imposed by perturbation theory. The greatest advantage of this approach is the ease and simplicity of parallelization stemming from the lack of the need for iteration, as a result of which the parallelization procedure is identical to the parallelization procedure for the GFMC solution of a linear problem. However, the premise of the algorithm is novel and rigorous mathematical justification has to be established in the future. The application areas of interest include the communication blackout problem during a space vehicle's re-entry into the atmosphere and electromagnetic propagation through the atmosphere/ionosphere in UHF/GPS applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Monte Carlo Methods & Applications is the property of De Gruyter and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GREEN'S functions KW - MONTE Carlo method KW - POISSON processes KW - BOLTZMANN'S equation KW - NONLINEAR equations KW - PLASMA sheaths KW - MATHEMATICAL models KW - 65N75 KW - Green's function KW - Monte Carlo KW - nonlinear equations KW - nonlinear Poisson-Boltzmann equation KW - random walk N1 - Accession Number: 99521055; Chatterjee, Kausik 1 Roadcap, John R. 2 Singh, Surendra 3; Affiliation: 1: Strategic and Military Space Division, Space Dynamics Laboratory, North Logan, UT 84341; and Center for Atmospheric and Space Sciences, Utah State University, Logan, UT 84322, USA 2: Air Force Research Laboratory, Albuquerque, NM 87117, USA 3: Department of Electrical Engineering, The University of Tulsa, Tulsa, OK 74104, USA; Source Info: Mar2014, Vol. 20 Issue 1, p53; Subject Term: GREEN'S functions; Subject Term: MONTE Carlo method; Subject Term: POISSON processes; Subject Term: BOLTZMANN'S equation; Subject Term: NONLINEAR equations; Subject Term: PLASMA sheaths; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: 65N75; Author-Supplied Keyword: Green's function; Author-Supplied Keyword: Monte Carlo; Author-Supplied Keyword: nonlinear equations; Author-Supplied Keyword: nonlinear Poisson-Boltzmann equation; Author-Supplied Keyword: random walk; Number of Pages: 7p; Illustrations: 2 Charts; Document Type: Article L3 - 10.1515/mcma-2013-0016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99521055&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Flores-Noria, Reyes AU - Vázquez, Rosa AU - Arias, Eduardo AU - Moggio, Ivana AU - Rodríguez, Marlene AU - Ziolo, Ronald F. AU - Rodríguez, Oliverio AU - Evans, Dean R. AU - Liebig, Carl T1 - Synthesis and optoelectronic properties of phenylenevinylenequinoline macromolecules. JO - New Journal of Chemistry JF - New Journal of Chemistry Y1 - 2014/03// VL - 38 IS - 3 M3 - Article SP - 974 EP - 984 SN - 11440546 AB - A series of 3, 5 and 7 quinoline terminated arylenevinylene oligomers was selectively synthesized by applying two repetitive reactions at each cycle of oligomerization: a Wittig and Pd Heck cross-coupling. Oligomers were characterized by 1H and homo-J-resolved, DEPT-135, APT, 13C NMR and MALDI-TOF spectrometry. A detailed characterization of the oligomers was performed by UV-Vis, static-dynamic fluorescence and Z-scan spectroscopy. The HOMO and LUMO levels were determined by cyclic voltammetry and compared with the theoretical ones. Effective conjugation is attained for the pentamer, whilst the molecular structure of the heptamer shows a pronounced torsion of the phenylenevinylene segment disrupting the degree of conjugation as revealed by theoretical simulation of the oligomer geometry. Furthermore, the theoretical simulation shows that the HOMO–LUMO frontier orbitals are mainly localized in the phenylenevinylene structure, while in the quinolines the spatial distribution is only located at the C=N– group without any appreciable contribution of the adjacent phenyl group. The pentamer is the most fluorescent oligomer with a quantum yield in solution of Φ = 0.62–0.68 depending on the solvent and a fluorescence lifetime of 1.07–1.28 ns, making this oligomer suitable for optoelectronic devices. [ABSTRACT FROM AUTHOR] AB - Copyright of New Journal of Chemistry is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTOELECTRONIC devices KW - QUINOLINE KW - MACROMOLECULES KW - FLUORESCENCE KW - OLIGOMERIZATION N1 - Accession Number: 100402626; Flores-Noria, Reyes 1 Vázquez, Rosa 1 Arias, Eduardo 1 Moggio, Ivana 1 Rodríguez, Marlene 1 Ziolo, Ronald F. 1 Rodríguez, Oliverio 1 Evans, Dean R. 2 Liebig, Carl 2,3; Affiliation: 1: Centro de Investigación en Química Aplicada (CIQA), Boulevard Enrique Reyna 140, 25294 Saltillo, México 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, 3005 Hobson Way, Wright-Patterson Air Force base, OH, 45433, USA 3: Azimuth Corporation, 4134 Linden Avenue, Suite 300, Dayton, OH, 45431, USA; Source Info: 2014, Vol. 38 Issue 3, p974; Subject Term: OPTOELECTRONIC devices; Subject Term: QUINOLINE; Subject Term: MACROMOLECULES; Subject Term: FLUORESCENCE; Subject Term: OLIGOMERIZATION; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1039/c3nj01193c UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100402626&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gumbs, Godfrey AU - Roslyak, Oleksiy AU - Huang, Danhong AU - Balassis, Antonios T1 - Influence of dielectric environment on the role of spin-orbit interaction for image potentials. JO - Physica Status Solidi (B) JF - Physica Status Solidi (B) Y1 - 2014/03// VL - 251 IS - 3 M3 - Article SP - 593 EP - 600 SN - 03701972 AB - We present a formalism for calculating the image potential for a two-dimensional electron gas (2DEG) with Rashba spin-orbit interaction (SOI) as well as for a 2D topological insulator (TI). The formalism is further generalized for including the Coulomb coupled multiple layers. Roles of broken inversion symmetry near the surface and the dielectric environment are investigated by using a surface-response function. The insignificant role of SOI in 2DEG is dramatically enhanced in TI by selecting a small relative permittivity [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi (B) is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRICS KW - SPIN-orbit interactions (Physics) KW - ELECTRON gas KW - TOPOLOGICAL insulators KW - COULOMB potential KW - RASHBA effect KW - image potential KW - spin-orbit interactions KW - topological insulators KW - two-dimensional electron gas N1 - Accession Number: 94801857; Gumbs, Godfrey 1 Roslyak, Oleksiy 1,2 Huang, Danhong 3 Balassis, Antonios 4; Affiliation: 1: Department of Physics and Astronomy, Hunter College of the City University of New York 2: Center of Integrated Nanotechnology, CINT, Los Alamos 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base 4: Department of Physics and Engineering Physics, Fordham University; Source Info: Mar2014, Vol. 251 Issue 3, p593; Subject Term: DIELECTRICS; Subject Term: SPIN-orbit interactions (Physics); Subject Term: ELECTRON gas; Subject Term: TOPOLOGICAL insulators; Subject Term: COULOMB potential; Subject Term: RASHBA effect; Author-Supplied Keyword: image potential; Author-Supplied Keyword: spin-orbit interactions; Author-Supplied Keyword: topological insulators; Author-Supplied Keyword: two-dimensional electron gas; Number of Pages: 8p; Document Type: Article L3 - 10.1002/pssb.201349263 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94801857&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kelly, T. D. AU - Petrosky, J. C. AU - Turner, D. AU - McClory, J. W. AU - Mann, J. M. AU - Kolis, J. W. AU - Zhang, Xin AU - Dowben, P. A. T1 - The unoccupied electronic structure characterization of hydrothermally grown ThO2 single crystals. JO - Physica Status Solidi - Rapid Research Letters JF - Physica Status Solidi - Rapid Research Letters Y1 - 2014/03// VL - 8 IS - 3 M3 - Article SP - 283 EP - 286 SN - 18626254 AB - Single crystals of thorium dioxide ThO2, grown by the hydrothermal growth technique, have been investigated by ultraviolet photoemission spectroscopy (UPS), inverse photoemission spectroscopy (IPES), and L3, M3, M4, and M5 X-ray absorption near edge spectroscopy (XANES). The experimental band gap for large single crystals has been determined to be 6 eV to 7 eV, from UPS and IPES, in line with expectations. The combined UPS and IPES, place the Fermi level near the conduction band minimum, making these crystals n-type, with extensive band tailing, suggesting an optical gap in the region of 4.8 eV for excitations from occupied to unoccupied edge states. Hybridization between the Th 6d/5f bands with O 2p is strongly implicated. (© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi - Rapid Research Letters is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC structure KW - SINGLE crystals KW - PHOTOEMISSION KW - X-ray absorption KW - ENERGY gaps (Physics) KW - CONDUCTION band KW - electronic properties KW - inverse photoemission KW - photoemission KW - ThO2 KW - X-ray absorption near edge spectroscopy N1 - Accession Number: 94914349; Kelly, T. D. 1 Petrosky, J. C. 1 Turner, D. 2 McClory, J. W. 1 Mann, J. M. 3 Kolis, J. W. 4 Zhang, Xin 5 Dowben, P. A. 5; Affiliation: 1: Department of Engineering Physics, Air Force Institute of Technology, 2950 Hobson Way, WPAFB, OH 45433, USA 2: Oak Ridge Institute for Science and Education, 1299 Bethel Valley Road, Oak Ridge, TN 37830, USA 3: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 4: Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET), Clemson University, Clemson, SC 29634-0973, USA 5: Department of Physics and Astronomy, Theodore Jorgensen Hall, 855 North 16th Street, University of Nebraska-Lincoln, Lincoln, NE 68588-0299, USA; Source Info: Mar2014, Vol. 8 Issue 3, p283; Subject Term: ELECTRONIC structure; Subject Term: SINGLE crystals; Subject Term: PHOTOEMISSION; Subject Term: X-ray absorption; Subject Term: ENERGY gaps (Physics); Subject Term: CONDUCTION band; Author-Supplied Keyword: electronic properties; Author-Supplied Keyword: inverse photoemission; Author-Supplied Keyword: photoemission; Author-Supplied Keyword: ThO2; Author-Supplied Keyword: X-ray absorption near edge spectroscopy; Number of Pages: 4p; Document Type: Article L3 - 10.1002/pssr.201308286 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94914349&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Makri, Eleana AU - Ramezani, Hamidreza AU - Kottos, Tsampikos AU - Vitebskiy, Ilya T1 - Concept of a reflective power limiter based on nonlinear localized modes. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2014/03// VL - 89 IS - 3-A M3 - Article SP - 1 EP - 5 SN - 10502947 AB - Optical limiters are designed to transmit low-intensity light, while blocking the light with excessively high intensity. A typical passive limiter absorbs excessive electromagnetic energy, which can cause its overheating and destruction. We propose the concept of a photonic reflective limiter based on resonance transmission via a localized mode. Such a limiter does not absorb the high-level radiation, but rather reflects it back to space. Importantly, the nearly total reflection occurs within a broad frequency range and direction of incidence. The same concept can be applied to infrared and microwave frequencies. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL limiters KW - OPTICAL devices KW - TRANSMISSION of light KW - ELECTROMAGNETIC waves KW - PHOTONICS N1 - Accession Number: 95642245; Makri, Eleana 1 Ramezani, Hamidreza 1 Kottos, Tsampikos 1 Vitebskiy, Ilya 2; Affiliation: 1: Department of Physics, Wesleyan University, Middletown, Connecticut 06459, USA 2: Air Force Research Laboratory, Sensors Directorate, Wright Patterson AFB, Ohio 45433, USA; Source Info: Mar2014, Vol. 89 Issue 3-A, p1; Subject Term: OPTICAL limiters; Subject Term: OPTICAL devices; Subject Term: TRANSMISSION of light; Subject Term: ELECTROMAGNETIC waves; Subject Term: PHOTONICS; Number of Pages: 5p; Document Type: Article L3 - 10.1103/PhysRevA.89.031802 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95642245&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roberts, Jennifer D. AU - Voss, Jameson D. AU - Knight, Brandon T1 - The Association of Ambient Air Pollution and Physical Inactivity in the United States. JO - PLoS ONE JF - PLoS ONE Y1 - 2014/03// VL - 9 IS - 3 M3 - Article SP - 1 EP - 10 PB - Public Library of Science SN - 19326203 AB - Background: Physical inactivity, ambient air pollution and obesity are modifiable risk factors for non-communicable diseases, with the first accounting for 10% of premature deaths worldwide. Although community level interventions may target each simultaneously, research on the relationship between these risk factors is lacking. Objectives: After comparing spatial interpolation methods to determine the best predictor for particulate matter (PM2.5; PM10) and ozone (O3) exposures throughout the U.S., we evaluated the cross-sectional association of ambient air pollution with leisure-time physical inactivity among adults. Methods: In this cross-sectional study, we assessed leisure-time physical inactivity using individual self-reported survey data from the Centers for Disease Control and Prevention's 2011 Behavioral Risk Factor Surveillance System. These data were combined with county-level U.S. Environmental Protection Agency air pollution exposure estimates using two interpolation methods (Inverse Distance Weighting and Empirical Bayesian Kriging). Finally, we evaluated whether those exposed to higher levels of air pollution were less active by performing logistic regression, adjusting for demographic and behavioral risk factors, and after stratifying by body weight category. Results: With Empirical Bayesian Kriging air pollution values, we estimated a statistically significant 16–35% relative increase in the odds of leisure-time physical inactivity per exposure class increase of PM2.5 in the fully adjusted model across the normal weight respondents (p-value<0.0001). Evidence suggested a relationship between the increasing dose of PM2.5 exposure and the increasing odds of physical inactivity. Conclusions: In a nationally representative, cross-sectional sample, increased community level air pollution is associated with reduced leisure-time physical activity particularly among the normal weight. Although our design precludes a causal inference, these results provide additional evidence that air pollution should be investigated as an environmental determinant of inactivity. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIR pollution KW - SEDENTARY behavior KW - OBESITY -- Risk factors KW - EARLY death KW - NON-communicable diseases KW - GENE targeting KW - CROSS-sectional method KW - UNITED States KW - Air quality KW - Atmospheric chemistry KW - Atmospheric science KW - Behavioral and social aspects of health KW - Biology KW - Earth sciences KW - Environmental epidemiology KW - Environmental health KW - Epidemiological methods KW - Epidemiology KW - Health care policy KW - Health risk analysis KW - Medicine KW - Non-clinical medicine KW - Nutrition KW - Obesity KW - Population biology KW - Public health KW - Research Article KW - Sports and exercise medicine N1 - Accession Number: 95435434; Roberts, Jennifer D. 1; Email Address: jennifer.roberts@usuhs.edu Voss, Jameson D. 1,2 Knight, Brandon 1; Affiliation: 1: 1 Department of Preventive Medicine and Biometrics, F. Edward Hebert School of Medicine, Uniformed Services University, Bethesda, Maryland, United States of America 2: 2 Epidemiology Consult Service, United States Air Force School of Aerospace Medicine, Wright-Patterson Air Force Base, Ohio, United States of America; Source Info: Mar2014, Vol. 9 Issue 3, p1; Subject Term: AIR pollution; Subject Term: SEDENTARY behavior; Subject Term: OBESITY -- Risk factors; Subject Term: EARLY death; Subject Term: NON-communicable diseases; Subject Term: GENE targeting; Subject Term: CROSS-sectional method; Subject Term: UNITED States; Author-Supplied Keyword: Air quality; Author-Supplied Keyword: Atmospheric chemistry; Author-Supplied Keyword: Atmospheric science; Author-Supplied Keyword: Behavioral and social aspects of health; Author-Supplied Keyword: Biology; Author-Supplied Keyword: Earth sciences; Author-Supplied Keyword: Environmental epidemiology; Author-Supplied Keyword: Environmental health; Author-Supplied Keyword: Epidemiological methods; Author-Supplied Keyword: Epidemiology; Author-Supplied Keyword: Health care policy; Author-Supplied Keyword: Health risk analysis; Author-Supplied Keyword: Medicine; Author-Supplied Keyword: Non-clinical medicine; Author-Supplied Keyword: Nutrition; Author-Supplied Keyword: Obesity; Author-Supplied Keyword: Population biology; Author-Supplied Keyword: Public health; Author-Supplied Keyword: Research Article; Author-Supplied Keyword: Sports and exercise medicine; Number of Pages: 10p; Document Type: Article L3 - 10.1371/journal.pone.0090143 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95435434&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Walsh, Matthew M. AU - Anderson, John R. T1 - Navigating Complex Decision Spaces: Problems and Paradigms in Sequential Choice. JO - Psychological Bulletin JF - Psychological Bulletin Y1 - 2014/03// VL - 140 IS - 2 M3 - Article SP - 466 EP - 486 SN - 00332909 AB - To behave adaptively, we must learn from the consequences of our actions. Doing so is difficult when the consequences of an action follow a delay. This introduces the problem of temporal credit assignment. When feedback follows a sequence of decisions, how should the individual assign credit to the intermediate actions that comprise the sequence? Research in reinforcement learning provides 2 general solutions to this problem: model-free reinforcement learning and model-based reinforcement learning. In this review, we examine connections between stimulus-response and cognitive learning theories, habitual and goal-directed control, and model-free and model-based reinforcement learning. We then consider a range of problems related to temporal credit assignment. These include second-order conditioning and secondary reinforcers, latent learning and detour behavior, partially observable Markov decision pro- cesses, actions with distributed outcomes, and hierarchical learning. We ask whether humans and animals, when faced with these problems, behave in a manner consistent with reinforcement learning techniques. Throughout, we seek to identify neural substrates of model-free and model-based reinforce- ment learning. The former class of techniques is understood in terms of the neurotransmitter dopamine and its effects in the basal ganglia. The latter is understood in terms of a distributed network of regions including the prefrontal cortex, medial temporal lobes, cerebellum, and basal ganglia. Not only do reinforcement learning techniques have a natural interpretation in terms of human and animal behavior but they also provide a useflul framework for understanding neural reward valuation and action selection. a [ABSTRACT FROM AUTHOR] AB - Copyright of Psychological Bulletin is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REINFORCEMENT learning KW - LEARNING classifier systems KW - COGNITIVE learning KW - COGNITIVE development KW - PREFRONTAL cortex KW - NEUROTRANSMITTER receptors KW - DOPAMINE KW - reinforcement learning KW - sequential choice KW - temporal credit assignment N1 - Accession Number: 94710474; Walsh, Matthew M. 1; Email Address: matthew.walsh.ctr@wpafb.af.mil Anderson, John R. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 2: Carnegie Mellon University; Source Info: Mar2014, Vol. 140 Issue 2, p466; Subject Term: REINFORCEMENT learning; Subject Term: LEARNING classifier systems; Subject Term: COGNITIVE learning; Subject Term: COGNITIVE development; Subject Term: PREFRONTAL cortex; Subject Term: NEUROTRANSMITTER receptors; Subject Term: DOPAMINE; Author-Supplied Keyword: reinforcement learning; Author-Supplied Keyword: sequential choice; Author-Supplied Keyword: temporal credit assignment; Number of Pages: 21p; Document Type: Article L3 - 10.1037/a0033455 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94710474&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pilchak, Adam L. T1 - A simple model to account for the role of microtexture on fatigue and dwell fatigue lifetimes of titanium alloys. JO - Scripta Materialia JF - Scripta Materialia Y1 - 2014/03// VL - 74 M3 - Article SP - 68 EP - 71 SN - 13596462 AB - A deterministic model to account for the effect of initial crack size, microtextured region size and aspect ratio on the mean cyclic and dwell fatigue lifetimes of titanium alloys is described. The model also quantifies variability in lifetime from sample to sample due to differences in the position of subsurface crack initiation. The results indicate that dwell fatigue life and cyclic fatigue life depend most on microtexture region size and initial crack size, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - METALS -- Fatigue KW - FRACTURE mechanics KW - METALLIC surfaces KW - CYCLIC fatigue KW - MATHEMATICAL models KW - Crack growth KW - Dwell fatigue KW - Fatigue KW - Microtexture KW - Titanium N1 - Accession Number: 93270870; Pilchak, Adam L. 1; Email Address: adam.pilchak.1@us.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright Patterson AFB, OH 45433, USA; Source Info: Mar2014, Vol. 74, p68; Subject Term: TITANIUM alloys; Subject Term: METALS -- Fatigue; Subject Term: FRACTURE mechanics; Subject Term: METALLIC surfaces; Subject Term: CYCLIC fatigue; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: Crack growth; Author-Supplied Keyword: Dwell fatigue; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Microtexture; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2013.10.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93270870&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hearn, John AU - Eichler, Jeffery AU - Hare, Christopher AU - Henley, Michael T1 - Effect of soil moisture on chlorine deposition. JO - Journal of Hazardous Materials JF - Journal of Hazardous Materials Y1 - 2014/02/28/ VL - 267 M3 - Article SP - 81 EP - 87 SN - 03043894 AB - Highlights: [•] Moisture increases chlorine's reaction rate with soil constituents. [•] Moisture decreases chlorine's transport rate through the soil. [•] Cl2 deposition rate is maximized when water filled 30–50% of the soil void space. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Hazardous Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOIL moisture KW - SEDIMENTATION & deposition KW - CHEMICAL reactions KW - SOIL composition KW - CHLORINE in soils KW - SOIL testing KW - Chlorine deposition KW - Soil moisture KW - Toxic industrial chemical N1 - Accession Number: 94578460; Hearn, John 1; Email Address: jhearn@leeuniversity.edu Eichler, Jeffery 2 Hare, Christopher 1 Henley, Michael 3; Affiliation: 1: Air Force Research Laboratory, Airbase Technologies Division, 139 Barnes Dr. Suite 2, Tyndall AFB, FL 32403, United States 2: Universal Technology Corporation, 139 Barnes Dr. Suite 2, Tyndall AFB, FL 32403, United States 3: Air Force Civil Engineer Center, 139 Barnes Dr. Suite 2, Tyndall AFB, FL 32403, United States; Source Info: Feb2014, Vol. 267, p81; Subject Term: SOIL moisture; Subject Term: SEDIMENTATION & deposition; Subject Term: CHEMICAL reactions; Subject Term: SOIL composition; Subject Term: CHLORINE in soils; Subject Term: SOIL testing; Author-Supplied Keyword: Chlorine deposition; Author-Supplied Keyword: Soil moisture; Author-Supplied Keyword: Toxic industrial chemical; NAICS/Industry Codes: 238910 Site Preparation Contractors; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jhazmat.2013.12.044 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94578460&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sohn, Hoon AU - Lim, Hyung Jin AU - DeSimio, Martin P. AU - Brown, Kevin AU - Derriso, Mark T1 - Nonlinear ultrasonic wave modulation for online fatigue crack detection. JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2014/02/28/ VL - 333 IS - 5 M3 - Article SP - 1473 EP - 1484 SN - 0022460X AB - Abstract: This study presents a fatigue crack detection technique using nonlinear ultrasonic wave modulation. Ultrasonic waves at two distinctive driving frequencies are generated and corresponding ultrasonic responses are measured using permanently installed lead zirconate titanate (PZT) transducers with a potential for continuous monitoring. Here, the input signal at the lower driving frequency is often referred to as a ‘pumping’ signal, and the higher frequency input is referred to as a ‘probing’ signal. The presence of a system nonlinearity, such as a crack formation, can provide a mechanism for nonlinear wave modulation, and create spectral sidebands around the frequency of the probing signal. A signal processing technique combining linear response subtraction (LRS) and synchronous demodulation (SD) is developed specifically to extract the crack-induced spectral sidebands. The proposed crack detection method is successfully applied to identify actual fatigue cracks grown in metallic plate and complex fitting-lug specimens. Finally, the effect of pumping and probing frequencies on the amplitude of the first spectral sideband is investigated using the first sideband spectrogram (FSS) obtained by sweeping both pumping and probing signals over specified frequency ranges. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR waves KW - ULTRASONIC waves KW - MODULATION (Electronics) KW - FATIGUE crack growth KW - LEAD zirconate titanate KW - TRANSDUCERS N1 - Accession Number: 92993584; Sohn, Hoon 1 Lim, Hyung Jin 1; Email Address: limhj87@gmail.com DeSimio, Martin P. 2 Brown, Kevin 3 Derriso, Mark 3; Affiliation: 1: Department of Civil and Environmental Engineering, KAIST, Daejeon 305-701, South Korea 2: University of Dayton Research Institute, Dayton, OH 45469, United States 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45430, United States; Source Info: Feb2014, Vol. 333 Issue 5, p1473; Subject Term: NONLINEAR waves; Subject Term: ULTRASONIC waves; Subject Term: MODULATION (Electronics); Subject Term: FATIGUE crack growth; Subject Term: LEAD zirconate titanate; Subject Term: TRANSDUCERS; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.jsv.2013.10.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92993584&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhu, Kaizheng AU - Lund, Benjamin AU - Stern, Rachel AU - Budy, Stephen M. AU - Smith, Dennis W. AU - Iacono, Scott T. T1 - Synthesis and characterization of blue-light emissive carbazole containing perfluorocyclobutyl arylene ether polymers. JO - Journal of Polymer Science Part A: Polymer Chemistry JF - Journal of Polymer Science Part A: Polymer Chemistry Y1 - 2014/02/22/ VL - 52 IS - 4 M3 - Article SP - 552 EP - 560 SN - 0887624X AB - ABSTRACT A series of N-alkyl/aryl carbazole 3,6-substituted arylene trifluorovinyl ether (TFVE) monomers were synthesized in high purity and yield from a concise four-step synthesis using carbazole as a starting material. Condensate-free, step-growth chain extension of the monomers afforded perfluorocyclobutyl (PFCB) arylene ether homo- and copolymers as solution processable, optically transparent blue-light emissive materials. Arylene TFVE monomers and conversion to PFCB arylene ether polymers were structurally elucidated and purity confirmed by high resolution mass spectroscopy, NMR (1H, 13C, and 19F) spectroscopy, gel permeation chromatography, and attenuated total reflectance Fourier transform infrared analysis. Thermal analysis by differential scanning calorimetry and thermogravimetric analysis revealed glass transition temperatures >150 °C and onset of decomposition in nitrogen >410 °C with 40 wt % char yield up to 900 °C. Optical and electrochemical studies included solution (tetrahydrofuran) and solid state (spin cast thin film) UV-vis/fluorescence spectroscopy and cyclic voltammetry which showed structure dependence of these blue emissive systems on the nature of the N-alkyl/aryl carbazole substitution in either homo- or copolymer configurations. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 552-560 [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Polymer Science Part A: Polymer Chemistry is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONOMERS KW - RESEARCH KW - CARBAZOLE -- Synthesis KW - POLYMERIZATION -- Research KW - MASS spectrometry KW - GEL permeation chromatography KW - FOURIER transform infrared spectroscopy KW - GLASS transition temperature KW - conjugated polymers KW - electrochemical KW - fluorescence KW - fluoropolymers KW - optics N1 - Accession Number: 93427108; Zhu, Kaizheng 1 Lund, Benjamin 2 Stern, Rachel 2 Budy, Stephen M. 3 Smith, Dennis W. 2 Iacono, Scott T. 3; Affiliation: 1: Department of Chemistry, University of Oslo 2: Department of Chemistry and The Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas 3: Department of Chemistry and Chemistry Research Center, United States Air Force Academy; Source Info: Feb2014, Vol. 52 Issue 4, p552; Subject Term: MONOMERS; Subject Term: RESEARCH; Subject Term: CARBAZOLE -- Synthesis; Subject Term: POLYMERIZATION -- Research; Subject Term: MASS spectrometry; Subject Term: GEL permeation chromatography; Subject Term: FOURIER transform infrared spectroscopy; Subject Term: GLASS transition temperature; Author-Supplied Keyword: conjugated polymers; Author-Supplied Keyword: electrochemical; Author-Supplied Keyword: fluorescence; Author-Supplied Keyword: fluoropolymers; Author-Supplied Keyword: optics; Number of Pages: 9p; Document Type: Article L3 - 10.1002/pola.27032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93427108&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sabbagh, Harold A. AU - Murphy, R. Kim AU - Sabbagh, Elias H. AU - Cherry, Matthew AU - Pilchak, Adam AU - Knopp, Jeremy S. AU - Blodgett, Mark P. T1 - 2D Stochastic-Integral Models for Characterizing Random Grain Noise in Titanium Alloys. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2014/02/18/ VL - 1581 M3 - Article SP - 506 EP - 512 PB - American Institute of Physics SN - 0094243X AB - We extend our previous work, in which we applied high-dimensional model representation (HDMR) and analysis of variance (ANOVA) concepts to the characterization of a metallic surface that has undergone a shot-peening treatment to reduce residual stresses, and has, therefore, become a random conductivity field. That example was treated as a one-dimensional problem, because those were the only data available. In this study, we develop a more rigorous two-dimensional model for characterizing random, anisotropic grain noise in titanium alloys. Such a model is necessary if we are to accurately capture the 'clumping' of crystallites into long chains that appear during the processing of the metal into a finished product. The mathematical model starts with an application of the Karhunen-Loève (K-L) expansion for the random Euler angles, θ and Φ , that characterize the orientation of each crystallite in the sample. The random orientation of each crystallite then defines the stochastic nature of the electrical conductivity tensor of the metal.We study two possible covariances, Gaussian and double-exponential, which are the kernel of the K-L integral equation, and find that the double-exponential appears to satisfy measurements more closely of the two. Results based on data from a Ti-7Al sample will be given, and further applications of HDMR and ANOVA will be discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - STOCHASTIC integrals KW - RANDOM numbers KW - ANALYSIS of variance KW - ANISOTROPY KW - Analysis of Variance KW - Electromagnetic Nondestructive Evaluation KW - high-dimensional model representation KW - Microstructure of Titanium Alloys KW - Random Grain Noise KW - Volume-Integral Equations N1 - Accession Number: 94656230; Sabbagh, Harold A. 1 Murphy, R. Kim 1 Sabbagh, Elias H. 1 Cherry, Matthew 2 Pilchak, Adam 3 Knopp, Jeremy S. 3 Blodgett, Mark P. 3; Affiliation: 1: Victor Technologies, LLC PO Box 7706 Bloomington, IN 47407-7706 USA 2: University of Dayton Research Institute 300 College Park Dr. Dayton, OH 45410 USA 3: Air Force Research Laboratory (AFRL/RXC) Wright Patterson AFB OH 45433-7817 USA; Source Info: 2014, Vol. 1581, p506; Subject Term: TITANIUM alloys; Subject Term: STOCHASTIC integrals; Subject Term: RANDOM numbers; Subject Term: ANALYSIS of variance; Subject Term: ANISOTROPY; Author-Supplied Keyword: Analysis of Variance; Author-Supplied Keyword: Electromagnetic Nondestructive Evaluation; Author-Supplied Keyword: high-dimensional model representation; Author-Supplied Keyword: Microstructure of Titanium Alloys; Author-Supplied Keyword: Random Grain Noise; Author-Supplied Keyword: Volume-Integral Equations; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 7p; Illustrations: 2 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.4864862 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94656230&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sathish, Shamachary AU - Welter, John T. AU - Schehl, Norm AU - Jata, Kumar V. T1 - Non-Contact Acousto-Thermal Signatures in as Received and Fatigue Damaged Ti-6Al-4V. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2014/02/18/ VL - 1581 M3 - Article SP - 697 EP - 702 PB - American Institute of Physics SN - 0094243X AB - Interaction of high amplitude acoustic waves with materials produces a small increase in the temperature that can be detected and measured using an IR camera. The changes in temperature as a function of time, due to interaction of high amplitude 20 kHz acoustics, with as received and fatigue damaged polycrystalline Ti-6Al-4V samples are compared. The maximum temperature reached by the sample has been found to increase with increasing fatigue cycles. The role of multiple physical mechanisms, responsible for conversion acoustic energy to heat, like the sample geometry (finite dimension), the microstructure (grain size), and dislocation density are examined. The theoretically evaluated temperature changes are observed to be in reasonable agreement with experimental measurements. The significance of the details of microstructure and dislocation properties needed in theoretical evaluation of temperature changes are used to explain the observed differences between experimental measurements and theoretical calculations. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM-aluminum-vanadium alloys KW - METALS -- Fatigue KW - SOUND waves KW - TEMPERATURE effect KW - POLYCRYSTALS KW - METALS -- Microstructure KW - PARTICLE size distribution KW - Acousto-thermal KW - Fatigue KW - Internal friction KW - Non-contact N1 - Accession Number: 94662409; Sathish, Shamachary 1 Welter, John T. 2 Schehl, Norm 1 Jata, Kumar V. 3; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0127 2: Materials State Awareness and Supportability Branch (RXCA), Air Force Research Laboratory, Wright-Patterson AFB OH 3: Metals Branch (RXCM), Air Force Research Laboratory, Wright-Patterson AFB OH; Source Info: 2014, Vol. 1581, p697; Subject Term: TITANIUM-aluminum-vanadium alloys; Subject Term: METALS -- Fatigue; Subject Term: SOUND waves; Subject Term: TEMPERATURE effect; Subject Term: POLYCRYSTALS; Subject Term: METALS -- Microstructure; Subject Term: PARTICLE size distribution; Author-Supplied Keyword: Acousto-thermal; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Internal friction; Author-Supplied Keyword: Non-contact; Number of Pages: 6p; Illustrations: 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1063/1.4864888 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94662409&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Sabbagh, Harold A. AU - Sabbagh, Elias AU - Murphy, R. Kim AU - Keiser, Mark AU - Forsyth, David S. AU - Lindgren, Eric A. T1 - Model-based Inverse Methods for Bolt-holt Eddy Current (BHEC) Inspections. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2014/02/18/ VL - 1581 M3 - Article SP - 1433 EP - 1440 PB - American Institute of Physics SN - 0094243X AB - This work presents a comprehensive approach for model-based inversion of crack characteristics using eddy current nondestructive evaluation (NDE) and includes a demonstration using a bolt-hole eddy-current (BHEC) technique. Data were acquired using standard eddy current hardware for crack and notch samples of varying size and profile. The inversion results were found to be accurate within 10% for sizing the depth of through cracks and able to accurately bin mid-bore cracks by size. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY current testing KW - NONDESTRUCTIVE testing KW - DATA analysis KW - FRACTURE mechanics KW - MATHEMATICAL models KW - Cracks KW - Eddy Current NDE KW - Inverse Methods KW - Models N1 - Accession Number: 94677179; Aldrin, John C. 1 Sabbagh, Harold A. 2 Sabbagh, Elias 2 Murphy, R. Kim 2 Keiser, Mark 3 Forsyth, David S. 3 Lindgren, Eric A. 4; Affiliation: 1: Computational Tools, Gurnee, Illinois, 60031, USA 2: Victor Technologies LLC, Bloomington, IN 47401, USA 3: TRI/Austin, Austin, TX 78746, USA 4: Air Force Research Laboratory (AFRL/RXCA), Wright-Patterson AFB, OH 45433; Source Info: 2014, Vol. 1581, p1433; Subject Term: EDDY current testing; Subject Term: NONDESTRUCTIVE testing; Subject Term: DATA analysis; Subject Term: FRACTURE mechanics; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: Cracks; Author-Supplied Keyword: Eddy Current NDE; Author-Supplied Keyword: Inverse Methods; Author-Supplied Keyword: Models; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Illustrations: 2 Diagrams, 2 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.4864990 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94677179&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cherry, Matthew R. AU - Sathish, Shamachary AU - Pilchak, Adam L. AU - Cherry, Aaron J. AU - Blodgett, Mark P. T1 - Characterization of Microstructure with Low Frequency Electromagnetic Techniques. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2014/02/18/ VL - 1581 M3 - Article SP - 1456 EP - 1462 PB - American Institute of Physics SN - 0094243X AB - A new computational method for characterizing the relationship between surface crystallography and electrical conductivity in anisotropic materials with low frequency electromagnetic techniques is presented. The method is discussed from the standpoint of characterizing the orientation of a single grain, as well as characterizing statistical information about grain ensembles in the microstructure. Large-area electron backscatter diffraction (EBSD) data was obtained and used in conjunction with a synthetic aperture approach to simulate the eddy current response of beta annealed Ti-6Al-4V. Experimental eddy current results are compared to the computed eddy current approximations based on electron backscatter diffraction (EBSD) data, demonstrating good agreement. The detectability of notches in the presence of noise from microstructure is analyzed with the described simulation method and advantages and limitations of this method are discussed relative to other NDE techniques for such analysis. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC testing KW - MICROSTRUCTURE KW - ELECTRIC conductivity KW - MAGNETIC anisotropy KW - BACKSCATTERING KW - EDDY current testing KW - Anisotropic KW - Eddy Current KW - Hexagonal KW - Microstructure N1 - Accession Number: 94677183; Cherry, Matthew R. 1 Sathish, Shamachary 1 Pilchak, Adam L. 2 Cherry, Aaron J. 3 Blodgett, Mark P. 2; Affiliation: 1: University of Dayton Research Institute, Structural Integrity Division 300 College Park, Dayton, OH 45469-0020, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RXCM) 2230 10th St., WPAFB, OH 45433, USA 3: Southwest Ohio Council for Higher Education, 3155 Research Blvd., Suite 204, Dayton, OH 45420-4015, USA; Source Info: 2014, Vol. 1581, p1456; Subject Term: ELECTROMAGNETIC testing; Subject Term: MICROSTRUCTURE; Subject Term: ELECTRIC conductivity; Subject Term: MAGNETIC anisotropy; Subject Term: BACKSCATTERING; Subject Term: EDDY current testing; Author-Supplied Keyword: Anisotropic; Author-Supplied Keyword: Eddy Current; Author-Supplied Keyword: Hexagonal; Author-Supplied Keyword: Microstructure; Number of Pages: 7p; Illustrations: 7 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.4864993 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94677183&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Criner, A. K. AU - Cherry, A. J. AU - Cooney, A. T. AU - Katter, T. D. T1 - Characterization of Degradation Using Reflectance Spectroscopy. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2014/02/18/ VL - 1581 M3 - Article SP - 1594 EP - 1602 PB - American Institute of Physics SN - 0094243X AB - A semi-classical model of the reflectance of a complex material is modeled. Model selection techniques using this reflectance model are developed to detect molecular vibration modes measured using infrared spectroscopy. An inverse problem methodology is then used to ascertain the underlying vibrational modes associated with varying concentrations of different chemical species. These two techniques are developed to characterize the extent of material degradation through the detection of spectra associated with the chemical processes underlying the degradation process. These methods are validated using data from samples of ceramic matrix composites. The samples considered were exposed to varying amounts of thermal treatment to ascertain the effectiveness of these methods to detect degradation. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REFLECTANCE spectroscopy KW - MOLECULAR vibration KW - CHEMICAL processes KW - INFRARED spectroscopy KW - HEAT treatment KW - Data Analysis KW - fourier infrared spectroscopy KW - Optical Constants KW - Reflectance Spectroscopy N1 - Accession Number: 94682491; Criner, A. K. 1 Cherry, A. J. 2 Cooney, A. T. 3 Katter, T. D. 4; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469, USA 2: Southwestern Ohio Council for Higher Education, Dayton, OH 45420, USA 3: Materials State Awareness & Supportability Branch, Air Force Research Laboratory, WPAFB 45433, USA 4: Universal Technologies Corporation, Dayton, OH 45432, USA; Source Info: 2014, Vol. 1581, p1594; Subject Term: REFLECTANCE spectroscopy; Subject Term: MOLECULAR vibration; Subject Term: CHEMICAL processes; Subject Term: INFRARED spectroscopy; Subject Term: HEAT treatment; Author-Supplied Keyword: Data Analysis; Author-Supplied Keyword: fourier infrared spectroscopy; Author-Supplied Keyword: Optical Constants; Author-Supplied Keyword: Reflectance Spectroscopy; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 9p; Illustrations: 2 Diagrams, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.4865014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94682491&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ko, R. T. AU - Blackshire, J. L. AU - Chen, M. Y. T1 - Ultrasonic Assessment of In-plane Modulus of CMC Materials Using a Contact Approach. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2014/02/18/ VL - 1581 M3 - Article SP - 1765 EP - 1771 PB - American Institute of Physics SN - 0094243X AB - An ultrasonic contact technique was developed to assess the in-plane modulus of Ceramic Matrix Composite (CMC) materials in the absence of multiple, distinct ultrasonic echoes within a specimen. This technique employs a dry-couplant for sending and receiving guided waves in a pitch-catch mode. The ultrasonic velocity is estimated from the zero-crossing, first-peak arrival time of a 200 kHz lowest-order symmetric mode (S0), where modulus estimations are made using standard plate-wave theory. The low-frequency asymptotic velocity characteristics of the S0 mode provide a means for estimating velocity with minimal dispersion effects and mode-overlap. Preliminary validation of the technique shows reasonable agreement with published modulus data and mechanical testing results. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAMB waves KW - ULTRASONIC measurement KW - MODULUS of elasticity KW - CONTACT mechanics KW - SYMMETRY (Physics) KW - ULTRASONIC testing KW - Contact approach KW - Dry-couplant KW - In-plane modulus KW - Lowest symmetric mode KW - Ultrasonic guided waves N1 - Accession Number: 94685311; Ko, R. T. 1 Blackshire, J. L. 2 Chen, M. Y. 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: 2014, Vol. 1581, p1765; Subject Term: LAMB waves; Subject Term: ULTRASONIC measurement; Subject Term: MODULUS of elasticity; Subject Term: CONTACT mechanics; Subject Term: SYMMETRY (Physics); Subject Term: ULTRASONIC testing; Author-Supplied Keyword: Contact approach; Author-Supplied Keyword: Dry-couplant; Author-Supplied Keyword: In-plane modulus; Author-Supplied Keyword: Lowest symmetric mode; Author-Supplied Keyword: Ultrasonic guided waves; Number of Pages: 7p; Illustrations: 1 Diagram, 2 Charts, 6 Graphs; Document Type: Article L3 - 10.1063/1.4865037 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94685311&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ko, R. T. AU - Blackshire, J. L. AU - Chen, M. Y. T1 - Ultrasonic Near-Surface Contact Imaging of Foam-based Hybrid Composite Materials. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2014/02/18/ VL - 1581 M3 - Article SP - 1772 EP - 1777 PB - American Institute of Physics SN - 0094243X AB - An ultrasonic near-surface contact imaging technique was developed to study bond integrity variations in a foam-based hybrid composite material system. The method integrates a pair of ultrasonic wedge transducers into a traditional ultrasonic C-scan system in a pitch-catch arrangement. Unlike a conventional C-scan, the specimen is not immersed in water but uses a thin layer of water couplant between the wedges and sample surface. The use of an angled wedge system produces generalized Rayleigh-Lamb waves in the multi-layer material system, where variations in local amplitude and phase velocity of the travelling waves were mapped between bonded polymer composite laminates and ceramic foam substrates. Three categories of features were observed in the scans including: (1) near-surface thermocouple hole positions, (2) reflected wave edge effects, and (3) potential bond line integrity variations. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPOSITE materials KW - ULTRASONIC imaging KW - FOAM KW - HYBRID systems KW - ULTRASONIC transducers KW - SURFACES (Physics) KW - bond integrity KW - Foam KW - Guided Waves KW - hybrid composite materials KW - Ultrasonic Contact Surface Imaging N1 - Accession Number: 94686724; Ko, R. T. 1 Blackshire, J. L. 2 Chen, M. Y. 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: 2014, Vol. 1581, p1772; Subject Term: COMPOSITE materials; Subject Term: ULTRASONIC imaging; Subject Term: FOAM; Subject Term: HYBRID systems; Subject Term: ULTRASONIC transducers; Subject Term: SURFACES (Physics); Author-Supplied Keyword: bond integrity; Author-Supplied Keyword: Foam; Author-Supplied Keyword: Guided Waves; Author-Supplied Keyword: hybrid composite materials; Author-Supplied Keyword: Ultrasonic Contact Surface Imaging; Number of Pages: 6p; Illustrations: 1 Color Photograph, 2 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.4865038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94686724&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Coughlin, Chris AU - Forsyth, David S. AU - Welter, John T. T1 - Progress on the Development of Automated Data Analysis Algorithms and Software for Ultrasonic Inspection of Composites. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2014/02/18/ VL - 1581 M3 - Article SP - 1920 EP - 1927 PB - American Institute of Physics SN - 0094243X AB - Progress is presented on the development and implementation of automated data analysis (ADA) software to address the burden in interpreting ultrasonic inspection data for large composite structures. The automated data analysis algorithm is presented in detail, which follows standard procedures for analyzing signals for time-of-flight indications and backwall amplitude dropout. ADA processing results are presented for test specimens that include inserted materials and discontinuities produced under poor manufacturing conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRASONIC testing KW - TIME-of-flight spectrometry KW - DATA analysis KW - NONDESTRUCTIVE testing KW - MANUFACTURING industries KW - COMPUTER software KW - Automated Data Analysis KW - Composites KW - Image Processing KW - Ultrasonic NDE N1 - Accession Number: 94686813; Aldrin, John C. 1 Coughlin, Chris 2 Forsyth, David S. 2 Welter, John T. 3; Affiliation: 1: Computational Tools, Gurnee, Illinois, 60031, USA 2: TRI/Austin, Austin, TX 78746, USA 3: Air Force Research Laboratory (AFRL/RXCA), Wright-Patterson AFB, OH 45433; Source Info: 2014, Vol. 1581, p1920; Subject Term: ULTRASONIC testing; Subject Term: TIME-of-flight spectrometry; Subject Term: DATA analysis; Subject Term: NONDESTRUCTIVE testing; Subject Term: MANUFACTURING industries; Subject Term: COMPUTER software; Author-Supplied Keyword: Automated Data Analysis; Author-Supplied Keyword: Composites; Author-Supplied Keyword: Image Processing; Author-Supplied Keyword: Ultrasonic NDE; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.4865058 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94686813&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Annis, Charles AU - Sabbagh, Harold A. AU - Knopp, Jeremy S. AU - Lindgren, Eric A. T1 - Assessing the Reliability of Nondestructive Evaluation Methods for Damage Characterization. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2014/02/18/ VL - 1581 M3 - Article SP - 2071 EP - 2078 PB - American Institute of Physics SN - 0094243X AB - A comprehensive approach to NDE characterization error evaluation is presented that follows the framework of the 'ahat-versus-a' model evaluation process for probability of detection (POD) assessment. Before characterization error model building is performed, an intermediate step must evaluate the presence and frequency of several possible classes of poor characterization results. A case study is introduced based on the estimation the length, depth and width of surface breaking cracks using bolt hole eddy current (BHEC) NDE. This study highlights the importance of engineering and statistical expertise in the model-building process to ensure all key effects and possible interactions are addressed. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - ERROR analysis (Mathematics) KW - RELIABILITY (Engineering) KW - EDDY current testing KW - CRACK propagation (Fracture mechanics) KW - Characterization KW - Eddy Current KW - NDE KW - Reliability KW - Sizing N1 - Accession Number: 94689490; Aldrin, John C. 1 Annis, Charles 2 Sabbagh, Harold A. 3 Knopp, Jeremy S. 4 Lindgren, Eric A. 4; Affiliation: 1: Computational Tools, Gurnee, Illinois, 60031, USA 2: Statistical Engineering, Palm Beach Garden, FL 33418, USA 3: Victor Technologies LLC, Bloomington, IN 47401, USA 4: Air Force Research Laboratory (AFRL/RXCA), Wright-Patterson AFB, OH 45433; Source Info: 2014, Vol. 1581, p2071; Subject Term: NONDESTRUCTIVE testing; Subject Term: ERROR analysis (Mathematics); Subject Term: RELIABILITY (Engineering); Subject Term: EDDY current testing; Subject Term: CRACK propagation (Fracture mechanics); Author-Supplied Keyword: Characterization; Author-Supplied Keyword: Eddy Current; Author-Supplied Keyword: NDE; Author-Supplied Keyword: Reliability; Author-Supplied Keyword: Sizing; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Illustrations: 2 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.4865078 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94689490&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pevtsov, Alexei A. AU - Bertello, Luca AU - Tlatov, Andrey G. AU - Kilcik, Ali AU - Nagovitsyn, Yury A. AU - Cliver, Edward W. T1 - Cyclic and Long-Term Variation of Sunspot Magnetic Fields. JO - Solar Physics JF - Solar Physics Y1 - 2014/02/15/ VL - 289 IS - 2 M3 - Article SP - 593 EP - 602 PB - Springer Science & Business Media B.V. SN - 00380938 AB - Measurements from the Mount Wilson Observatory (MWO) were used to study the long-term variations of sunspot field strengths from 1920 to 1958. Following a modified approach similar to that presented in Pevtsov et al. ( Astrophys. J. Lett.742, L36, 2011 ), we selected the sunspot with the strongest measured field strength for each observing week and computed monthly averages of these weekly maximum field strengths. The data show the solar cycle variation of the peak field strengths with an amplitude of about 500 – 700 gauss (G), but no statistically significant long-term trends. Next, we used the sunspot observations from the Royal Greenwich Observatory (RGO) to establish a relationship between the sunspot areas and the sunspot field strengths for cycles 15 – 19. This relationship was used to create a proxy of the peak magnetic field strength based on sunspot areas from the RGO and the USAF/NOAA network for the period from 1874 to early 2012. Over this interval, the magnetic field proxy shows a clear solar cycle variation with an amplitude of 500 – 700 G and a weaker long-term trend. From 1874 to around 1920, the mean value of magnetic field proxy increases by about 300 – 350 G, and, following a broad maximum in 1920 – 1960, it decreases by about 300 G. Using the proxy for the magnetic field strength as the reference, we scaled the MWO field measurements to the measurements of the magnetic fields in Pevtsov et al. ( 2011 ) to construct a combined data set of maximum sunspot field strengths extending from 1920 to early 2012. This combined data set shows strong solar cycle variations and no significant long-term trend (the linear fit to the data yields a slope of − 0.2±0.8 G year −1). On the other hand, the peak sunspot field strengths observed at the minimum of the solar cycle show a gradual decline over the last three minima (corresponding to cycles 21 – 23) with a mean downward trend of ≈ 15 G year −1. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR cycle KW - SUNSPOTS KW - SOLAR magnetic fields KW - ASTRONOMICAL observations KW - Magnetic fields KW - Solar cycle KW - Sunspots KW - MOUNT Wilson Observatory KW - ROYAL Greenwich Observatory N1 - Accession Number: 92598246; Pevtsov, Alexei A. 1; Email Address: apevtsov@nso.edu Bertello, Luca 2; Email Address: lbertello@nso.edu Tlatov, Andrey G. 3; Email Address: tlatov@mail.ru Kilcik, Ali 4; Email Address: kilcik@bbso.njit.edu Nagovitsyn, Yury A. 5; Email Address: nag@gao.spb.ru Cliver, Edward W. 6; Email Address: ecliver@nso.edu; Affiliation: 1: National Solar Observatory, Sunspot, NM, 88349, USA 2: National Solar Observatory, 950 N. Cherry Avenue, Tucson, AZ, 85719, USA 3: Kislovodsk Solar Station of Pulkovo Observatory, PO Box 145, Gagarina Str., 100, Kislovodsk, 357700, Russian Federation 4: Big Bear Solar Observatory, 40386, Big Bear City, CA, USA 5: Pulkovo Astronomical Observatory, Russian Academy of Sciences, Pulkovskoe sh. 65, St. Petersburg, 196140, Russian Federation 6: Space Vehicles Directorate, Air Force Research Laboratory, Sunspot, NM, 88349, USA; Source Info: Feb2014, Vol. 289 Issue 2, p593; Subject Term: SOLAR cycle; Subject Term: SUNSPOTS; Subject Term: SOLAR magnetic fields; Subject Term: ASTRONOMICAL observations; Author-Supplied Keyword: Magnetic fields; Author-Supplied Keyword: Solar cycle; Author-Supplied Keyword: Sunspots; Company/Entity: MOUNT Wilson Observatory Company/Entity: ROYAL Greenwich Observatory; Number of Pages: 10p; Document Type: Article L3 - 10.1007/s11207-012-0220-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92598246&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Altrock, Richard C. T1 - Forecasting the Maxima of Solar Cycle 24 with Coronal Fe xiv Emission. JO - Solar Physics JF - Solar Physics Y1 - 2014/02/15/ VL - 289 IS - 2 M3 - Article SP - 623 EP - 629 PB - Springer Science & Business Media B.V. SN - 00380938 AB - The onset of the “Rush to the Poles” of polar-crown prominences and their associated coronal emission is a harbinger of solar maximum. Altrock ( Solar Phys.216, 343, 2003 ) showed that the “Rush” was well observed at 1.15 Ro in the Fe  xiv corona at the Sacramento Peak site of the National Solar Observatory prior to the maxima of Cycles 21 to 23. The data show that solar maximum in those cycles occurred when the center line of the Rush reached a critical latitude of 76 ∘±2 ∘. Furthermore, in the previous three cycles solar maximum occurred when the highest number of Fe  xiv emission features per day (averaged over 365 days and both hemispheres) first reached latitudes 20 ∘±1.7 ∘. Applying the above conclusions to Cycle 24 is difficult due to the unusual nature of this cycle. Cycle 24 displays an intermittent Rush that is only well-defined in the northern hemisphere. In 2009 an initial slope of 4.6 ∘ year −1 was found in the north, compared to an average of 9.4±1.7 ∘ year −1 in the previous cycles. An early fit to the Rush would have reached 76 ∘ at 2014.6. However, in 2010 the slope increased to 7.5 ∘ year −1 (an increase did not occur in the previous three cycles). Extending that rate to 76 ∘±2 ∘ indicates that the solar maximum in the northern hemisphere already occurred at 2011.6±0.3. In the southern hemisphere the Rush to the Poles, if it exists, is very poorly defined. A linear fit to several maxima would reach 76 ∘ in the south at 2014.2. In 1999, persistent Fe  xiv coronal emission known as the “extended solar cycle” appeared near 70 ∘ in the North and began migrating towards the equator at a rate 40 % slower than the previous two solar cycles. However, in 2009 and 2010 an acceleration occurred. Currently the greatest number of emission features is at 21 ∘ in the North and 24 ∘ in the South. This indicates that solar maximum is occurring now in the North but not yet in the South. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR cycle KW - ASTRONOMICAL observations KW - NORTHERN sky (Astronomy) KW - SUN -- Prominences KW - SOLAR corona KW - Corona KW - Solar cycle KW - SOLAR Maximum Mission (Project) N1 - Accession Number: 92598166; Altrock, Richard C. 1; Email Address: altrock@nso.edu; Affiliation: 1: Air Force Research Laboratory, Space Weather Center of Excellence, PO Box 62, Sunspot, NM, 88349, USA; Source Info: Feb2014, Vol. 289 Issue 2, p623; Subject Term: SOLAR cycle; Subject Term: ASTRONOMICAL observations; Subject Term: NORTHERN sky (Astronomy); Subject Term: SUN -- Prominences; Subject Term: SOLAR corona; Author-Supplied Keyword: Corona; Author-Supplied Keyword: Solar cycle; Company/Entity: SOLAR Maximum Mission (Project); Number of Pages: 7p; Document Type: Article L3 - 10.1007/s11207-012-0216-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92598166&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kahler, S. W. AU - Arge, C. N. AU - Akiyama, S. AU - Gopalswamy, N. T1 - Do Solar Coronal Holes Affect the Properties of Solar Energetic Particle Events? JO - Solar Physics JF - Solar Physics Y1 - 2014/02/15/ VL - 289 IS - 2 M3 - Article SP - 657 EP - 673 PB - Springer Science & Business Media B.V. SN - 00380938 AB - The intensities and timescales of gradual solar energetic particle (SEP) events at 1 AU may depend not only on the characteristics of shocks driven by coronal mass ejections (CMEs), but also on large-scale coronal and interplanetary structures. It has long been suspected that the presence of coronal holes (CHs) near the CMEs or near the 1-AU magnetic footpoints may be an important factor in SEP events. We used a group of 41 E≈ 20 MeV SEP events with origins near the solar central meridian to search for such effects. First we investigated whether the presence of a CH directly between the sources of the CME and of the magnetic connection at 1 AU is an important factor. Then we searched for variations of the SEP events among different solar wind (SW) stream types: slow, fast, and transient. Finally, we considered the separations between CME sources and CH footpoint connections from 1 AU determined from four-day forecast maps based on Mount Wilson Observatory and the National Solar Observatory synoptic magnetic-field maps and the Wang–Sheeley–Arge model of SW propagation. The observed in-situ magnetic-field polarities and SW speeds at SEP event onsets tested the forecast accuracies employed to select the best SEP/CH connection events for that analysis. Within our limited sample and the three analytical treatments, we found no statistical evidence for an effect of CHs on SEP event peak intensities, onset times, or rise times. The only exception is a possible enhancement of SEP peak intensities in magnetic clouds. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORONAL holes (Astronomy) KW - SOLAR energetic particles KW - CORONAL mass ejections KW - SOLAR magnetic fields KW - MATHEMATICAL models KW - SOLAR activity KW - Coronal mass ejections – low coronal signatures KW - Energetic particles – acceleration KW - Magnetic fields – models N1 - Accession Number: 92598190; Kahler, S. W. 1; Email Address: stephen.kahler@kirtland.af.mil Arge, C. N. 1; Email Address: nick.arge@kirtland.af.mil Akiyama, S. 2; Email Address: sachiko.akiyama@nasa.gov Gopalswamy, N. 3; Email Address: nat.gopalswamy@nasa.gov; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Ave., Kirtland AFB, NM, 87117, USA 2: The Catholic University of America, Washington, DC, 20064, USA 3: NASA Goddard Space Flight Center, Greenbelt, MD, 20771, USA; Source Info: Feb2014, Vol. 289 Issue 2, p657; Subject Term: CORONAL holes (Astronomy); Subject Term: SOLAR energetic particles; Subject Term: CORONAL mass ejections; Subject Term: SOLAR magnetic fields; Subject Term: MATHEMATICAL models; Subject Term: SOLAR activity; Author-Supplied Keyword: Coronal mass ejections – low coronal signatures; Author-Supplied Keyword: Energetic particles – acceleration; Author-Supplied Keyword: Magnetic fields – models; Number of Pages: 17p; Document Type: Article L3 - 10.1007/s11207-013-0427-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92598190&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Früh, Carolin AU - Jah, Moriba K. T1 - Coupled orbit–attitude motion of high area-to-mass ratio (HAMR) objects including efficient self-shadowing. JO - Acta Astronautica JF - Acta Astronautica Y1 - 2014/02/10/ VL - 95 M3 - Article SP - 227 EP - 241 SN - 00945765 AB - Abstract: This paper shows the effect of self-shadowing on the coupled attitude–orbit dynamics of objects with high area-to-mass ratios (HAMR) in simulating standard multi layer insulation materials (MLI) as tilted single rigid sheets. Efficient and computationally fast self-shadowing methods have been developed. This includes an approximate self-shadowing method and a rapid exact self-shadowing method. Accuracy considerations are made and the effect of a chosen tessellation is shown. The coupled orbit–attitude perturbations of solar radiation pressure and Earth gravity field are taken into account. The results are compared to the attitude–orbit dynamics, when neglecting self-shadowing effects. An averaged physical shadow-map model is developed and compared to the full self-shadowing simulation. The combined effect of solar radiation pressure and self-shadowing leads to a rapid spin-up of the objects, even though they have uniform reflection properties. As a result, the observed brightness of these objects is subject to rapid changes. [Copyright &y& Elsevier] AB - Copyright of Acta Astronautica is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CELLULAR automata KW - PERTURBATION (Mathematics) KW - COMPUTER simulation KW - SOLAR radiation KW - MASS spectrometry KW - DYNAMIC models KW - Attitude dynamics KW - High area-to-mass ratio KW - Orbit dynamics KW - Perturbations KW - Rapid self-shadowing algorithm KW - Space debris N1 - Accession Number: 93593358; Früh, Carolin 1,2; Email Address: carolin.frueh@gmail.com Jah, Moriba K. 2; Affiliation: 1: University of New Mexico, Mechanical Engineering Department, 1 University of New Mexico MSC01 1150, Albuquerque, NM 87131, United States 2: Air Force Research Laboratory, Space Vehicles Directorate 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117, United States; Source Info: Feb2014, Vol. 95, p227; Subject Term: CELLULAR automata; Subject Term: PERTURBATION (Mathematics); Subject Term: COMPUTER simulation; Subject Term: SOLAR radiation; Subject Term: MASS spectrometry; Subject Term: DYNAMIC models; Author-Supplied Keyword: Attitude dynamics; Author-Supplied Keyword: High area-to-mass ratio; Author-Supplied Keyword: Orbit dynamics; Author-Supplied Keyword: Perturbations; Author-Supplied Keyword: Rapid self-shadowing algorithm; Author-Supplied Keyword: Space debris; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.actaastro.2013.11.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93593358&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Darafsheh, Arash AU - Limberopoulos, Nicholaos I. AU - Derov, John S. AU - Walker Jr, Dennis E. AU - Astratov, Vasily N. T1 - Advantages of microsphere-assisted super-resolution imaging technique over solid immersion lens and confocal microscopies. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/02/10/ VL - 104 IS - 6 M3 - Article SP - 061117-1 EP - 061117-4 PB - American Institute of Physics SN - 00036951 AB - We demonstrate a series of advantages of microsphere-assisted imaging over confocal and solid immersion lens microscopies including intrinsic flexibility, better resolution, higher magnification, and longer working distances. We discerned minimal feature sizes of ~50-60 nm in nanoplasmonic arrays at the illumination wavelength λ=405 nm. It is demonstrated that liquid-immersed, high-index (n~1.9-2.1) spheres provide a superior image quality compared to that obtained by spheres with the same index contrast in an air environment. We estimate that using transparent microspheres at deep UV wavelengths of ~200 nm might make possible imaging of various nanostructures with extraordinary high ~30 nm resolution. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSPHERES KW - CRYSTALLINE lens KW - NANOSTRUCTURES KW - MICROSTRUCTURE KW - NANOTECHNOLOGY KW - NANOSTRUCTURED materials N1 - Accession Number: 94477417; Darafsheh, Arash 1; Email Address: arash.darafsheh@gmail.com Limberopoulos, Nicholaos I. 2 Derov, John S. 2 Walker Jr, Dennis E. 2 Astratov, Vasily N. 1,2; Email Address: astratov@uncc.edu; Affiliation: 1: Department of Physics and Optical Science, Center for Optoelectronics and Optical Communications, University of North Carolina at Charlotte, Charlotte, North Carolina 28223-0001, USA 2: Air Force Research Laboratory, Sensors Directorate, Wright Patterson AFB, Ohio 45433, USA; Source Info: 2/10/2014, Vol. 104 Issue 6, p061117-1; Subject Term: MICROSPHERES; Subject Term: CRYSTALLINE lens; Subject Term: NANOSTRUCTURES; Subject Term: MICROSTRUCTURE; Subject Term: NANOTECHNOLOGY; Subject Term: NANOSTRUCTURED materials; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 4p; Illustrations: 2 Color Photographs, 1 Black and White Photograph, 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.4864760 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94477417&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Music, Denis AU - Basse, Felix H.-U. AU - Liang Han AU - Devender AU - Borca-Tasciuc, Theo AU - Gengler, Jamie J. AU - Voevodin, Andrey A. AU - Ramanath, Ganpati AU - Schneider, Jochen M. T1 - Multifold Seebeck increase in RuO2 films by quantum-guided lanthanide dilute alloying. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/02/03/ VL - 104 IS - 5 M3 - Article SP - 053903-1 EP - 053903-5 PB - American Institute of Physics SN - 00036951 AB - Ab initio predictions indicating that alloying RuO2 with La, Eu, or Lu can increase the Seebeck coefficient α manifold due to quantum confinement effects are validated in sputter-deposited La-alloyed RuO2 films showing fourfold α increase. Combinatorial screening reveals that α enhancement correlates with La-induced lattice distortion, which also decreases the thermal conductivity twentyfold, conducive for high thermoelectric figures of merit. These insights should facilitate the rational design of high efficiency oxide-based thermoelectrics through quantum-guided alloying. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL conductivity KW - THERMOELECTRIC effects KW - QUANTUM theory KW - THERMAL properties KW - ALLOYS N1 - Accession Number: 94376826; Music, Denis 1; Email Address: music@mch.rwth-aachen.de Basse, Felix H.-U. 1 Liang Han 2 Devender 3 Borca-Tasciuc, Theo 2 Gengler, Jamie J. 4,5 Voevodin, Andrey A. 4 Ramanath, Ganpati 1,3 Schneider, Jochen M. 1; Affiliation: 1: Materials Chemistry, RWTH Aachen University, Kopernikusstr. 10, D-52074 Aachen, Germany 2: Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, 110 8th St., Troy, New York 12180, USA 3: Materials Science and Engineering Department, Rensselaer Polytechnic Institute, 110 8th St., Troy, New York 12180, USA 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, Ohio 45433, USA 5: Spectral Energies, LLC, Dayton, Ohio 45431, USA; Source Info: 2/3/2014, Vol. 104 Issue 5, p053903-1; Subject Term: THERMAL conductivity; Subject Term: THERMOELECTRIC effects; Subject Term: QUANTUM theory; Subject Term: THERMAL properties; Subject Term: ALLOYS; Number of Pages: 5p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.4864078 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94376826&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boyne, A. AU - Wang, D. AU - Shi, R.P. AU - Zheng, Y. AU - Behera, A. AU - Nag, S. AU - Tiley, J.S. AU - Fraser, H.L. AU - Banerjee, R. AU - Wang, Y. T1 - Pseudospinodal mechanism for fine α/β microstructures in β-Ti alloys. JO - Acta Materialia JF - Acta Materialia Y1 - 2014/02// VL - 64 M3 - Article SP - 188 EP - 197 SN - 13596454 AB - Abstract: Recent experimental observations in β-Ti alloys have demonstrated the formation of a dense population of fine intragranular α precipates when the alloy is step-quenched below a critical temperature. These precipitates are associated with a sudden, significant increase in the apparent nucleation rate. We developed a computational model of α precipitation in Ti alloys, via the phase-field method, in order to investigate the fundamental cause of the observed microstructural changes. We simulated the nucleation of α phase in TiMo for a series of compositions and temperatures and qualitatively reproduced the experimental observations. These results are explained via a pseudospinodal nucleation mechanism: when the system is close enough to the critical point at which the α and β phases have the same free energy, fluctuation-assisted partitionless transformation from β to α becomes the dominant precipitation pathway. Consequently a rapid increase in the nucleation rate occurs, resulting in a fine distribution of numerous intragranular α precipitates. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - TITANIUM alloys KW - CRITICAL temperature (Chemistry) KW - COMPUTER simulation KW - RATE of nucleation KW - PHASE rule & equilibrium KW - Computer simulation KW - Congruent transformations KW - Nucleation KW - Phase-field method KW - Precipitation N1 - Accession Number: 93419694; Boyne, A. 1,2,3 Wang, D. 1,2,3 Shi, R.P. 3 Zheng, Y. 3 Behera, A. 1,2 Nag, S. 1,2 Tiley, J.S. 4 Fraser, H.L. 3 Banerjee, R. 1,2 Wang, Y. 3; Email Address: wang.363@osu.edu; Affiliation: 1: Center for Advanced Research and Technology, University of North Texas, Denton, TX, USA 2: Department of Materials Science and Engineering, University of North Texas, Denton, TX, USA 3: Department of Materials Science and Engineering, Ohio State University, 2041 N. College Rd., Columbus, OH, USA 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH, USA; Source Info: Feb2014, Vol. 64, p188; Subject Term: MICROSTRUCTURE; Subject Term: TITANIUM alloys; Subject Term: CRITICAL temperature (Chemistry); Subject Term: COMPUTER simulation; Subject Term: RATE of nucleation; Subject Term: PHASE rule & equilibrium; Author-Supplied Keyword: Computer simulation; Author-Supplied Keyword: Congruent transformations; Author-Supplied Keyword: Nucleation; Author-Supplied Keyword: Phase-field method; Author-Supplied Keyword: Precipitation; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.actamat.2013.10.026 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93419694&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davis, Stan C. AU - Sheppard, Vonda C. AU - Begum, Gousia AU - Cai, Ye AU - Fang, Yunnan AU - Berrigan, John D. AU - Kröger, Nils AU - Sandhage, Kenneth H. T1 - Rapid Flow-Through Biocatalysis with High Surface Area, Enzyme-Loaded Carbon and Gold-Bearing Diatom Frustule Replicas. JO - Advanced Functional Materials JF - Advanced Functional Materials Y1 - 2014/02// VL - 23 IS - 36 M3 - Article SP - 4611 EP - 4620 SN - 1616301X AB - Hierarchically-porous, rigid inorganic structures have attracted appreciable interest in a wide range of applications, including catalysis, filtration, sensing, and energy storage/harvesting. Naturally-occurring, hierarchically-porous, rigid assemblies with a wide range of three-dimensional (3D) structures are generated by diatoms (photosynthetic aquatic microorganisms); that is, each of the tens of thousands of diatom species forms a macro-to-mesoporous, silica-bearing cell wall (frustule) with a particular, highly-reproducible 3D morphology. We have recently demonstrated that such intricate biosilica structures can be converted, without loss of 3D morphology, into high surface area (>1300 m2/g) macro-to-microporous carbon. Here we demonstrate, for the first time, how the chemical tailoring of such hierarchically-porous, carbon-converted, 3D biogenic structures can result in a high degree of enzyme loading for rapid flow-through catalysis. Two approaches have been developed for enriching such structures with carboxylic acid groups: i) dendritic amplification of partially-oxidized C replicas, and ii) electrochemical Au deposition followed by self-assembly of a carboxylic acid-bearing surface layer. The terminal carboxylic acid groups were then used for electrostatic attachment of a protamine (PA) modified derivative of the model enzyme, glucose oxidase (GOx-PA). In a flow-through system, the GOx-PA-loaded, diatom-derived microscale structures displayed a glucose consumption rate more than 80% faster than for GOx-PA-loaded C black and Au nanoparticles. The rapid flow-through catalysis of the carbon and gold-bearing frustule replicas was enabled by the open 3D morphology of the starting diatom silica templates, along with the enhanced surface area and high enzyme loading resulting from the chemical conversion and surface functionalization processes. [ABSTRACT FROM AUTHOR] AB - Copyright of Advanced Functional Materials is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIATOMS -- Frustules KW - ENZYMES KW - CARBON KW - SILICA KW - GOLD KW - FLOW injection analysis KW - THREE-dimensional imaging KW - biotemplate replica KW - chemical tailoring KW - enzyme immobilization KW - glucose oxidase KW - mesoporous N1 - Accession Number: 90470012; Davis, Stan C. 1 Sheppard, Vonda C. 2,3 Begum, Gousia 3 Cai, Ye 1 Fang, Yunnan 1 Berrigan, John D. 1,4 Kröger, Nils 1,3,5 Sandhage, Kenneth H. 1,3; Affiliation: 1: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA 2: Metrics, Inc, Greenville, NC 27834, USA 3: School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA 4: Soft Matter Materials Branch (RXAS), Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 5: ZIK B CUBE and Department of Chemistry and Food Chemistry, Dresden Institute of Technology (TU Dresden), 01307 Dresden, Germany; Source Info: Feb2014, Vol. 23 Issue 36, p4611; Subject Term: DIATOMS -- Frustules; Subject Term: ENZYMES; Subject Term: CARBON; Subject Term: SILICA; Subject Term: GOLD; Subject Term: FLOW injection analysis; Subject Term: THREE-dimensional imaging; Author-Supplied Keyword: biotemplate replica; Author-Supplied Keyword: chemical tailoring; Author-Supplied Keyword: enzyme immobilization; Author-Supplied Keyword: glucose oxidase; Author-Supplied Keyword: mesoporous; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1002/adfm.201203758 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90470012&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rizzetta, Donald P. AU - Visbal, Miguel R. T1 - Numerical Simulation of Excrescence Generated Transition. JO - AIAA Journal JF - AIAA Journal Y1 - 2014/02// VL - 52 IS - 2 M3 - Article SP - 385 EP - 397 SN - 00011452 AB - Numerical computations are carried out to predict the transition generated by excrescence on a platelike geometry in subsonic flow. Both forward-facing and rearward-facing steps of small roughness height are considered in the investigation. These are representative of joints and other surface imperfections on wing sections that disrupt laminar flow, thereby increasing skin friction and drag. Solutions are obtained via a high-fidelity numerical scheme and an implicit time-marching approach on an overset mesh system that is used to represent the steps. Very-small-amplitude numerical forcing is employed to generate perturbations, which are amplified by the geometric disturbances, similar to the physical situation. The flowfield just downstream of the steps is characterized by the growth and breakdown of two-dimensional fluid structures. Because all significant scales of the flow are fully resolved in this region, the solutions there correspond to direct numerical simulations. Further downstream where the flow is more fully turbulent, the calculations are regarded as large-eddy simulations. Details of the numerical procedure are summarized, and features of the flowfields are described, which help to elucidate the transition process. Comparisons are made with the available experimental data in terms of time-mean skin-friction measurements. The locations of transition and skin-friction levels predicted numerically are in close correspondence with the experiments. A grid-resolution study was carried out to confirm the accuracy of the computations. In the fully turbulent region downstream of the transition, calculations agree with the expected behavior, but have not yet evolved to the high-Reynolds-number asymptotic form. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUBSONIC flow KW - RESEARCH KW - FLOW (Fluid dynamics) KW - LAMINAR flow KW - MATHEMATICAL models KW - SKIN friction (Aerodynamics) KW - NUMERICAL analysis N1 - Accession Number: 94769051; Rizzetta, Donald P. 1 Visbal, Miguel R. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512; Source Info: Feb2014, Vol. 52 Issue 2, p385; Subject Term: SUBSONIC flow; Subject Term: RESEARCH; Subject Term: FLOW (Fluid dynamics); Subject Term: LAMINAR flow; Subject Term: MATHEMATICAL models; Subject Term: SKIN friction (Aerodynamics); Subject Term: NUMERICAL analysis; Number of Pages: 13p; Document Type: Article L3 - 10.2514/1.J052530 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94769051&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Medwell, Paul R. AU - Blunck, David L. AU - Dally, Bassam B. T1 - The role of precursors on the stabilisation of jet flames issuing into a hot environment. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2014/02// VL - 161 IS - 2 M3 - Article SP - 465 EP - 474 SN - 00102180 AB - Abstract: This paper seeks to address unusual flame stabilisation behaviour observed in experimental jet flames which issue into a hot coflow. It has been observed that increasing the temperature and/or oxygen concentration in the coflow can lead to an increase in flame liftoff height. The paper isolates the role of chemistry, and in particular flame intermediates, on the observed phenomenon with a view to better understand how the behaviour changes over a range of conditions. A descriptive theory for this behaviour is proposed, which is based on the well-established theory that a build-up of radicals and intermediate species is responsible for autoignition of these flames. This paper systematically examines the role of these precursors with a view to better understanding of the chemical kinetics and to assess if the observed behaviour is chemistry-dominated. To this end, laminar flame calculations and ignition delay curves are presented, and the findings are validated with experiments. The results indicate that chemical effects alone are insufficient to fully explain the observations, but the calculations support the general trends noted in the experiments and highlight the importance and relative effects of some key precursors. In particular, the production and consumption of formaldehyde in a low oxygen environment supports the unusual flame behaviour observed experimentally. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL precursors KW - FLAME KW - TEMPERATURE effect KW - CHEMICAL models KW - CHEMICAL kinetics KW - FORMALDEHYDE KW - Hot coflow KW - Jet in hot coflow burner KW - Lifted flames KW - Vitiated coflow burner N1 - Accession Number: 93267595; Medwell, Paul R. 1; Email Address: paul.medwell@adelaide.edu.au Blunck, David L. 2 Dally, Bassam B. 1; Affiliation: 1: School of Mechanical Engineering, The University of Adelaide, SA 5005, Australia 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, USA; Source Info: Feb2014, Vol. 161 Issue 2, p465; Subject Term: CHEMICAL precursors; Subject Term: FLAME; Subject Term: TEMPERATURE effect; Subject Term: CHEMICAL models; Subject Term: CHEMICAL kinetics; Subject Term: FORMALDEHYDE; Author-Supplied Keyword: Hot coflow; Author-Supplied Keyword: Jet in hot coflow burner; Author-Supplied Keyword: Lifted flames; Author-Supplied Keyword: Vitiated coflow burner; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.combustflame.2013.08.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93267595&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bhamare, Sagar AU - Eason, Thomas AU - Spottswood, Stephen AU - Mannava, Seetha R. AU - Vasudevan, Vijay K. AU - Qian, Dong T1 - A multi-temporal scale approach to high cycle fatigue simulation. JO - Computational Mechanics JF - Computational Mechanics Y1 - 2014/02// VL - 53 IS - 2 M3 - Article SP - 387 EP - 400 PB - Springer Science & Business Media B.V. SN - 01787675 AB - High cycle fatigue (HCF) is a failure mechanism that dominates the life of many engineering components and structures. Time scale associated with HCF loading is a main challenge for developing a simulation based life prediction framework using conventional FEM approach. Motivated by these challenges, the extended space-time method (XTFEM) based on the time discontinuous Galerkin formulation is proposed. For HCF life prediction, XTFEM is coupled with a two-scale continuum damage mechanics model for evaluating the fatigue damage accumulation. Direct numerical simulations of HCF are performed using the proposed methodology on a notched specimen of AISI 304L steel. It is shown the total fatigue life can be accurately predicted using the proposed simulation approach based on XTFEM. The presented computational framework can be extended for predicting the service and the residual life of structural components. [ABSTRACT FROM AUTHOR] AB - Copyright of Computational Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Fatigue KW - SERVICE life (Engineering) KW - COMPUTER simulation KW - GALERKIN methods KW - PREDICTION models KW - CONTINUUM damage mechanics KW - NOTCH effect KW - Direct numerical simulation KW - Enrichment KW - High cycle fatigue KW - Space-time method KW - Two-scale damage model N1 - Accession Number: 94062256; Bhamare, Sagar 1 Eason, Thomas 2 Spottswood, Stephen 2 Mannava, Seetha R. 1 Vasudevan, Vijay K. 1 Qian, Dong 3; Email Address: dongqian.work@gmail.com; Affiliation: 1: Department of Mechanical and Materials Engineering, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH 4522, USA 2: Air Force Research Laboratory, Air Vehicles Directorate, Wright-Patterson Air Force Base, Fairborn, OH 45433, USA 3: Department of Mechanical Engineering, University of Texas at Dallas, Richardson, TX 75080, USA; Source Info: Feb2014, Vol. 53 Issue 2, p387; Subject Term: MATERIALS -- Fatigue; Subject Term: SERVICE life (Engineering); Subject Term: COMPUTER simulation; Subject Term: GALERKIN methods; Subject Term: PREDICTION models; Subject Term: CONTINUUM damage mechanics; Subject Term: NOTCH effect; Author-Supplied Keyword: Direct numerical simulation; Author-Supplied Keyword: Enrichment; Author-Supplied Keyword: High cycle fatigue; Author-Supplied Keyword: Space-time method; Author-Supplied Keyword: Two-scale damage model; Number of Pages: 14p; Document Type: Article L3 - 10.1007/s00466-013-0915-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94062256&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grach, S. AU - Sergeev, E. AU - Shindin, A. AU - Mishin, E. AU - Watkins, B. T1 - Artificial ionosphere layers for pumping-wave frequencies near the fourth electron gyroharmonic in experiments at the HAARP facility. JO - Doklady Physics JF - Doklady Physics Y1 - 2014/02// VL - 59 IS - 2 M3 - Article SP - 62 EP - 66 PB - Springer Science & Business Media B.V. SN - 10283358 AB - In this paper we consider the action (in the magnetic-zenith direction) of powerful high frequency (HF) radiation of ordinary polarization on the ionosphere F region. We deal with frequencies f > 4 f ( f is the electron cyclotron frequency) of 1.7 GW equivalent radiated power. This action results in the appearance in the ionosphere of an artificial ionization layer. The layer descends with respect to the basic (unperturbed) layer at a rate of ∼500 m s down to the altitude, where f ≈ 4 f. [ABSTRACT FROM AUTHOR] AB - Copyright of Doklady Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSPHERE KW - ELECTRON accelerators KW - IONIZATION (Atomic physics) KW - RADIATION KW - CYCLOTRONS N1 - Accession Number: 94955146; Grach, S. 1; Email Address: sgrach@rf.unn.ru Sergeev, E. 2 Shindin, A. 1 Mishin, E. 3 Watkins, B. 4; Affiliation: 1: Lobachevsky State University of Nizhni Novgorod, Nizhni Novgorod 603950 Russia 2: Radiophysical Research Institute, Nizhni Novgorod 603950 Russia 3: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico USA 4: Geophysical Institute, University of Alaska, Fairbanks USA; Source Info: Feb2014, Vol. 59 Issue 2, p62; Subject Term: IONOSPHERE; Subject Term: ELECTRON accelerators; Subject Term: IONIZATION (Atomic physics); Subject Term: RADIATION; Subject Term: CYCLOTRONS; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1134/S1028335814020074 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94955146&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abotula, S. AU - Heeder, N. AU - Chona, R. AU - Shukla, A. T1 - Dynamic Thermo-mechanical Response of Hastelloy X to Shock Wave Loading. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2014/02// VL - 54 IS - 2 M3 - Article SP - 279 EP - 291 SN - 00144851 AB - A comprehensive series of experiments were conducted to study the dynamic response of rectangular Hastelloy X plates at room and elevated temperatures when subjected to shock wave loading. A shock tube apparatus, capable of testing materials at temperatures up to 900 °C, was developed and utilized to generate the shock loading. Propane gas was used as the heating source to effectively provide an extreme thermal environment. The heating system is both robust and capable of providing uniform heating during shock loading. A cooling system was also implemented to prevent the shock tube from reaching high temperatures. High-speed photography coupled with the optical technique of Digital Image Correlation (DIC) was used to obtain the real-time 3D deformation of the Hastelloy X plates under shock wave loading. To eliminate the influence of thermal radiation at high temperatures, the DIC technique was used in conjunction with bandpass optical filters and a high-intensity light source to obtain the full-field deformation. In addition, a high-speed camera was utilized to record the side-view deformation images and this information was used to validate the data obtained from the high temperature 3D stereovision DIC technique. The results showed that uniform heating of the specimen was consistently achieved with the designed heating system. For the same applied incident pressure, the highest impulse was imparted to the specimen at room temperature. As a consequence of temperature-dependent material properties, the specimen demonstrated an increasing trend in back-face (nozzle side) deflection and in-plane strain with increasing temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHOCK waves KW - ALLOYS KW - MATERIALS -- Testing KW - HIGH-speed photography KW - THERMOPHYSICAL properties KW - STRAINS & stresses (Mechanics) KW - Extreme environments KW - Hastelloy X KW - High temperature 3D DIC KW - Shock tube KW - Thermo-mechanical loading N1 - Accession Number: 94629323; Abotula, S. 1; Email Address: sabotula@my.uri.edu Heeder, N. 1; Email Address: heedern@egr.uri.edu Chona, R. 2; Email Address: ravi.chona@wpafb.af.mil Shukla, A. 1; Email Address: shuklaa@egr.uri.edu; Affiliation: 1: Dynamic Photo Mechanics Laboratory, Department of Mechanical, Industrial & Systems Engineering, University of Rhode Island, Kingston 02881 USA 2: Structural Sciences Center, Aerospace Systems Directorate, US Air Force Research Laboratory, Wright Patterson AFB 45433-7402 USA; Source Info: Feb2014, Vol. 54 Issue 2, p279; Subject Term: SHOCK waves; Subject Term: ALLOYS; Subject Term: MATERIALS -- Testing; Subject Term: HIGH-speed photography; Subject Term: THERMOPHYSICAL properties; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: Extreme environments; Author-Supplied Keyword: Hastelloy X; Author-Supplied Keyword: High temperature 3D DIC; Author-Supplied Keyword: Shock tube; Author-Supplied Keyword: Thermo-mechanical loading; Number of Pages: 13p; Document Type: Article L3 - 10.1007/s11340-013-9796-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94629323&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Strang, Adam J. AU - Funke, Gregory J. AU - Russell, Sheldon M. AU - Dukes, Allen W. AU - Middendorf, Matthew S. T1 - Physio-Behavioral Coupling in a Cooperative Team Task: Contributors and Relations. JO - Journal of Experimental Psychology. Human Perception & Performance JF - Journal of Experimental Psychology. Human Perception & Performance Y1 - 2014/02// VL - 40 IS - 1 M3 - Article SP - 145 EP - 158 SN - 00961523 AB - Research indicates that coactors performing cooperative tasks often exhibit spontaneous and unintended similarities in their physiological and behavioral responses--a phenomenon referred to here as physio-behavioral coupling (PBC). The purpose of this research was to identify contributors to PBC; examine relationships between PBC, team performance, and perceived team attributes (e.g., cohesion, trust); and compare a set of time-series measures(cross-correlation [CC], cross-recurrence quantification analysis [CRQA], and cross-fuzzy entropy [CFEn]) in their characterization of PBC across comparisons. To accomplish this, PBC was examined in human postural sway (PS) and cardiac interbeat intervals (IBIs) from dyadic teams performing a fast-paced puzzle task (Quadra--a variant of the video game Tetris). Results indicated that observed levels of PBC were not a chance occurrence, but instead driven by features of the team-task environment, and that PBC was likely influenced by similar individual task demands and interpersonal coordination dynamics that were not "unique" to a particular team. Correlation analysis revealed that PBC exhibited negative relationships with team performance and team attributes, which were interpreted to reflect complementary coordination (as opposed to mimicry) during task performance, potentially due to differentiated team roles. Finally, qualitative comparison of time-series measures used to characterize PBC indicated that CRQA percent recurrence and CFEn (both nonlinear measures) settled on mostly analogous characterizations, whereas linear CC did not. The disparity observed between the linear and nonlinear measures highlights underlying computational and interpretational differences between the two families of statistics and supports the use of multiple metrics for characterizing PBC. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Experimental Psychology. Human Perception & Performance is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HUMAN behavior KW - TEAMS in the workplace KW - PHYSIOLOGY KW - TRUST KW - PERCEPTION KW - cooperative KW - coordination KW - coupling KW - interpersonal KW - team N1 - Accession Number: 94509687; Strang, Adam J. 1; Email Address: adam.strang.ctr@us.af.mil Funke, Gregory J. 2 Russell, Sheldon M. 2 Dukes, Allen W. 2 Middendorf, Matthew S. 3; Affiliation: 1: Consortium Research Fellows Program, Alexandria, Virginia 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 3: Middendorf Scientific Services Incorporated, Medway, Ohio; Source Info: Feb2014, Vol. 40 Issue 1, p145; Subject Term: HUMAN behavior; Subject Term: TEAMS in the workplace; Subject Term: PHYSIOLOGY; Subject Term: TRUST; Subject Term: PERCEPTION; Author-Supplied Keyword: cooperative; Author-Supplied Keyword: coordination; Author-Supplied Keyword: coupling; Author-Supplied Keyword: interpersonal; Author-Supplied Keyword: team; Number of Pages: 14p; Document Type: Article L3 - 10.1037/a0033125 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94509687&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bergman, Michael S. AU - Zhuang, Ziqing AU - Hanson, David AU - Heimbuch, Brian K. AU - McDonald, Michael J. AU - Palmiero, Andrew J. AU - Shaffer, Ronald E. AU - Harnish, Delbert AU - Husband, Michael AU - Wander, Joseph D. T1 - Development of an Advanced Respirator Fit-Test Headform. JO - Journal of Occupational & Environmental Hygiene JF - Journal of Occupational & Environmental Hygiene Y1 - 2014/02// VL - 11 IS - 2 M3 - Article SP - 117 EP - 125 SN - 15459624 AB - Improved respirator test headforms are needed to measure the fit of N95 filtering facepiece respirators (FFRs) for protection studies against viable airborne particles. A Static (i.e., non-moving, non-speaking) Advanced Headform (StAH) was developed for evaluating the fit of N95 FFRs. The StAH was developed based on the anthropometric dimensions of a digital headform reported by the National Institute for Occupational Safety and Health (NIOSH) and has a silicone polymer skin with defined local tissue thicknesses. Quantitative fit factor evaluations were performed on seven N95 FFR models of various sizes and designs. Donnings were performed with and without a pre-test leak checking method. For each method, four replicate FFR samples of each of the seven models were tested with two donnings per replicate, resulting in a total of 56 tests per donning method. Each fit factor evaluation was comprised of three 86-sec exercises: “Normal Breathing” (NB, 11.2 liters per min (lpm)), “Deep Breathing” (DB, 20.4 lpm), then NB again. A fit factor for each exercise and an overall test fit factor were obtained. Analysis of variance methods were used to identify statistical differences among fit factors (analyzed as logarithms) for different FFR models, exercises, and testing methods. For each FFR model and for each testing method, the NB and DB fit factor data were not significantly different (P> 0.05). Significant differences were seen in the overall exercise fit factor data for the two donning methods among all FFR models (pooled data) and in the overall exercise fit factor data for the two testing methods within certain models. Utilization of the leak checking method improved the rate of obtaining overall exercise fit factors ≥100. The FFR models, which are expected to achieve overall fit factors ≥ 100 on human subjects, achieved overall exercise fit factors ≥ 100 on the StAH. Further research is needed to evaluate the correlation of FFRs fitted on the StAH to FFRs fitted on people. [Supplementary materials are available for this article. Go to the publisher's online edition ofJournal of Occupational and Environmental Hygienefor the following free supplemental resource: a file providing detailed information on the advanced head form design and fabrication process.] [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Occupational & Environmental Hygiene is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUALITY control KW - EQUIPMENT & supplies KW - BREATHING apparatus KW - EVALUATION KW - ANALYSIS of variance KW - HEAD KW - HUMAN anatomical models (Objects) KW - NEW product development KW - RESEARCH -- Finance KW - QUANTITATIVE research KW - DATA analysis -- Software KW - FLORIDA KW - advanced headform KW - fit-test KW - headform KW - N95 KW - N95 respirator N1 - Accession Number: 93351068; Bergman, Michael S. 1 Zhuang, Ziqing 1; Email Address: zaz3@cdc.gov Hanson, David 2 Heimbuch, Brian K. 3 McDonald, Michael J. 3 Palmiero, Andrew J. 1 Shaffer, Ronald E. 1 Harnish, Delbert 3 Husband, Michael 4 Wander, Joseph D. 5; Affiliation: 1: National Personal Protective Technology Laboratory, National Institute for Occupational Safety and Health, Pittsburgh, Pennsylvania 2: Hanson Robotics, Inc., Plano, Texas 3: Applied Research Associates, Inc., Panama City, Florida 4: Office of Assistant Secretary for Preparedness and Response, Biomedical Advanced Research and Development Authority, U.S. Department of Health and Human Services, Washington, D.C. 5: Air Force Research Laboratory, Tyndall Air Force Base, Florida; Source Info: Feb2014, Vol. 11 Issue 2, p117; Subject Term: QUALITY control; Subject Term: EQUIPMENT & supplies; Subject Term: BREATHING apparatus; Subject Term: EVALUATION; Subject Term: ANALYSIS of variance; Subject Term: HEAD; Subject Term: HUMAN anatomical models (Objects); Subject Term: NEW product development; Subject Term: RESEARCH -- Finance; Subject Term: QUANTITATIVE research; Subject Term: DATA analysis -- Software; Subject Term: FLORIDA; Author-Supplied Keyword: advanced headform; Author-Supplied Keyword: fit-test; Author-Supplied Keyword: headform; Author-Supplied Keyword: N95; Author-Supplied Keyword: N95 respirator; NAICS/Industry Codes: 541613 Marketing Consulting Services; Number of Pages: 9p; Document Type: Article L3 - 10.1080/15459624.2013.816434 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93351068&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Rumi, Mariacristina AU - Bunning, Timothy J. T1 - Polymers in photonics: Controlling information by manipulating light. JO - Journal of Polymer Science Part B: Polymer Physics JF - Journal of Polymer Science Part B: Polymer Physics Y1 - 2014/02// VL - 52 IS - 3 M3 - Editorial SP - 157 EP - 157 SN - 08876266 AB - An introduction is presented in which the editor discusses various reports within the issue on topics including the development of a polymer network liquid crystals for use in spatial light modulators, photoisomerization of polymers containing azobenzene derivatives and photorefractive polymers. KW - POLYMERS KW - PHOTOISOMERIZATION KW - AZOBENZENE N1 - Accession Number: 92999854; Rumi, Mariacristina 1 Bunning, Timothy J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLPJ, Wright-Patterson Air Force Base; Source Info: Feb2014, Vol. 52 Issue 3, p157; Subject Term: POLYMERS; Subject Term: PHOTOISOMERIZATION; Subject Term: AZOBENZENE; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 1p; Document Type: Editorial L3 - 10.1002/polb.23432 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92999854&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Derrick M. AU - Li, Christopher Y. AU - Bunning, Timothy J. T1 - Light-directed mesoscale phase separation via holographic polymerization. JO - Journal of Polymer Science Part B: Polymer Physics JF - Journal of Polymer Science Part B: Polymer Physics Y1 - 2014/02// VL - 52 IS - 3 M3 - Article SP - 232 EP - 250 SN - 08876266 AB - ABSTRACT Holographic polymerization (HP) is a simple, fast, and attractive technique to fabricate one-, two- and three-dimensional complex and functional nanostructures. Not only does the coupling of photopolymerization and light-directed phase separation HP process render rich polymer physics to the latter, it also leads to profound morphology-sensitive properties of HP structures, ranging from nano- to mesoscales. The past two decades witnessed tremendous progress in the field and in this review, we will probe the fundamental characteristics and parameters of HP, exemplify the versatility of this nanofabrication technique by presenting a diverse selection of HP patterned soft materials, and discuss some unique applications of such HP structures. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2014, 52, 232-250 [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Polymer Science Part B: Polymer Physics is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HOLOGRAPHY KW - RESEARCH KW - OPTICAL diffraction KW - DIFFRACTION of electromagnetic waves KW - MESOSCALE convective complexes KW - POLYMERIZATION -- Research KW - liquid-crystalline polymers (LCP) KW - phase separation KW - photopolymerization KW - self-assembly N1 - Accession Number: 92999850; Smith, Derrick M. 1 Li, Christopher Y. 1 Bunning, Timothy J. 2; Affiliation: 1: Department of Materials Science and Engineering, Drexel University 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base; Source Info: Feb2014, Vol. 52 Issue 3, p232; Subject Term: HOLOGRAPHY; Subject Term: RESEARCH; Subject Term: OPTICAL diffraction; Subject Term: DIFFRACTION of electromagnetic waves; Subject Term: MESOSCALE convective complexes; Subject Term: POLYMERIZATION -- Research; Author-Supplied Keyword: liquid-crystalline polymers (LCP); Author-Supplied Keyword: phase separation; Author-Supplied Keyword: photopolymerization; Author-Supplied Keyword: self-assembly; Number of Pages: 20p; Document Type: Article L3 - 10.1002/polb.23413 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92999850&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Whitehead, Casserly R. AU - Webb, Timothy S. AU - Wells, Timothy S. AU - Hunter, Kari L. T1 - Airmen with mild traumatic brain injury (mTBI) at increased risk for subsequent mishaps. JO - Journal of Safety Research JF - Journal of Safety Research Y1 - 2014/02// VL - 48 M3 - Article SP - 43 EP - 47 SN - 00224375 AB - Abstract: Background: Little is known regarding long-term performance decrements associated with mild Traumatic Brain Injury (mTBI). The goal of this study was to determine if individuals with an mTBI may be at increased risk for subsequent mishaps. Methods: Cox proportional hazards modeling was utilized to calculate hazard ratios for 518,958 active duty U.S. Air Force service members (Airmen) while controlling for varying lengths of follow-up and potentially confounding variables. Two non-mTBI comparison groups were used; the second being a subset of the original, both without head injuries two years prior to study entrance. Results: Hazard ratios indicate that the causes of increased risk associated with mTBI do not resolve quickly. Additionally, outpatient mTBI injuries do not differ from other outpatient bodily injuries in terms of subsequent injury risk. Conclusions: These findings suggest that increased risk for subsequent mishaps are likely due to differences shared among individuals with any type of injury, including risk-taking behaviors, occupations, and differential participation in sports activities. Therefore, individuals who sustain an mTBI or injury have a long-term risk of additional mishaps. Practical applications: Differences shared among those who seek medical care for injuries may include risk-taking behaviors (Cherpitel, 1999; Turner & McClure, 2004; Turner, McClure, & Pirozzo, 2004), occupations, and differential participation in sports activities, among others. Individuals with an mTBI should be educated that they are at risk for subsequent injury. Historical data supported no lingering effects of mTBI, but more recent data suggest longer lasting effects. This study further adds that one of the longer term sequelae of mTBI may be an increased risk for subsequent mishap. [Copyright &y& Elsevier] AB - Copyright of Journal of Safety Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRMEN KW - BRAIN -- Wounds & injuries KW - MEDICAL errors KW - INDUSTRIAL safety KW - TRAFFIC accidents KW - PROPORTIONAL hazards models KW - RISK factors KW - Accidents KW - Concussion KW - Long-term risk KW - Occupational safety KW - Performance decrements N1 - Accession Number: 94410288; Whitehead, Casserly R. 1; Email Address: Casserly.Whitehead.ctr@WPAFB.AF.MIL Webb, Timothy S. 2; Email Address: Timothy.Webb@WPAFB.AF.MIL Wells, Timothy S. 2; Email Address: tmlbwells@wowway.com Hunter, Kari L. 3; Email Address: Kari.Hunter@Kirtland.AF.MIL; Affiliation: 1: Infoscitex Corporation, Dayton, OH, USA 2: Vulnerability Analysis Branch, AFMC 711 Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 3: U.S. Air Force Safety Center, Kirtland AFB, NM, USA; Source Info: Feb2014, Vol. 48, p43; Subject Term: AIRMEN; Subject Term: BRAIN -- Wounds & injuries; Subject Term: MEDICAL errors; Subject Term: INDUSTRIAL safety; Subject Term: TRAFFIC accidents; Subject Term: PROPORTIONAL hazards models; Subject Term: RISK factors; Author-Supplied Keyword: Accidents; Author-Supplied Keyword: Concussion; Author-Supplied Keyword: Long-term risk; Author-Supplied Keyword: Occupational safety; Author-Supplied Keyword: Performance decrements; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jsr.2013.11.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94410288&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Granlund, K. AU - Monnier, B. AU - Ol, M. AU - Williams, D. T1 - Airfoil longitudinal gust response in separated vs. attached flows. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2014/02// VL - 26 IS - 2 M3 - Article SP - 1 EP - 14 PB - American Institute of Physics SN - 10706631 AB - Airfoil aerodynamic loads are expected to have quasi-steady, linear dependence on the history of input disturbances, provided that small-amplitude bounds are observed. We explore this assertion for the problem of periodic sinusoidal streamwise gusts, by comparing experiments on nominally 2D airfoils in temporally sinusoidal modulation of freestream speed in a wind tunnel vs. sinusoidal displacement of the airfoil in constant freestream in a water tunnel. In the wind tunnel, there is a streamwise unsteady pressure gradient causing a buoyancy force, while in the water tunnel one must subtract the inertial load of the test article. Both experiments have an addedmass contribution to aerodynamic force. Within measurement resolution, lift and drag, fluctuating and mean, were in good agreement between the two facilities. For incidence angle below static stall, small-disturbance theory was found to be in good agreement with measured lift history, regardless of oscillation frequency. The circulatory component of fluctuating drag was found to be independent of oscillation frequency. For larger incidence angles, there is marked departure between the measured lift history and that predicted from Greenberg's formula. Flow visualization shows coupling between bluff-body shedding and motion-induced shedding, identifiable with lift cancellation or augmentation, depending on the reduced frequency. Isolating the buoyancy effect in the wind tunnel and dynamic tares in the water tunnel, and theoretical calculation of apparent-mass in both cases, we arrive at good agreement in measured circulatory contribution between the two experiments whether the flow is attached or separated substantiating the linear superposition of the various constituents to total lift and drag, and supporting the idea that aerodynamic gust response can legitimately be studied in a steady freestream by oscillating the test article. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROFOILS KW - AERODYNAMIC load KW - FLOW (Fluid dynamics) KW - WIND tunnels KW - BUOYANCY KW - OSCILLATIONS N1 - Accession Number: 94775699; Granlund, K. 1; Email Address: kenneth.granlund@gmail.com Monnier, B. 2 Ol, M. 1 Williams, D. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 2: Illinois Institute of Technology, Chicago, Illinois 60616, USA; Source Info: Feb2014, Vol. 26 Issue 2, p1; Subject Term: AEROFOILS; Subject Term: AERODYNAMIC load; Subject Term: FLOW (Fluid dynamics); Subject Term: WIND tunnels; Subject Term: BUOYANCY; Subject Term: OSCILLATIONS; Number of Pages: 14p; Illustrations: 3 Black and White Photographs, 11 Graphs; Document Type: Article L3 - 10.1063/1.4864338 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94775699&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Herzinger, Kurt AU - Holcomb, Trae T1 - Perfect Bricks of Every Size. JO - Semigroup Forum JF - Semigroup Forum Y1 - 2014/02// VL - 88 IS - 1 M3 - Article SP - 205 EP - 220 SN - 00371912 AB - We answer an open question from a previous investigation related to numerical semigroups. For integers k, n≥2 we prove the existence of a numerical semigroup S and a relative ideal I such that the size of the minimal generating set for I is k, the size of the minimal generating set for the dual, S− I, is n, and the size of the minimal generating for the ideal sum I+( S− I) is nk. Further, we outline a method for proving that S is symmetric and S+( S− I)= S∖{0}. The primary tool in this investigation is the Apery set of S relative to the multiplicity of S. [ABSTRACT FROM AUTHOR] AB - Copyright of Semigroup Forum is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMIGROUPS (Algebra) KW - NUMERICAL analysis KW - INTEGERS KW - SET theory KW - MULTIPLICITY (Mathematics) KW - DUALITY theory (Mathematics) KW - Dual KW - Minimal generating set KW - Numerical semigroup KW - Relative ideal N1 - Accession Number: 94355310; Herzinger, Kurt 1; Email Address: kurt.herzinger@usafa.edu Holcomb, Trae 1; Email Address: trae.holcomb@usafa.edu; Affiliation: 1: Department of Mathematical Sciences, United States Air Force Academy, USAF Academy, 2354 Fairchild Dr Suite 6D124 USAF Academy 80840-6252 USA; Source Info: Feb2014, Vol. 88 Issue 1, p205; Subject Term: SEMIGROUPS (Algebra); Subject Term: NUMERICAL analysis; Subject Term: INTEGERS; Subject Term: SET theory; Subject Term: MULTIPLICITY (Mathematics); Subject Term: DUALITY theory (Mathematics); Author-Supplied Keyword: Dual; Author-Supplied Keyword: Minimal generating set; Author-Supplied Keyword: Numerical semigroup; Author-Supplied Keyword: Relative ideal; Number of Pages: 16p; Document Type: Article L3 - 10.1007/s00233-013-9522-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94355310&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jones-Farmer, L. Allison AU - Ezell, Jeremy D. AU - Hazen, Benjamin T. T1 - Applying Control Chart Methods to Enhance Data Quality. JO - Technometrics JF - Technometrics Y1 - 2014/02// VL - 56 IS - 1 M3 - Article SP - 29 EP - 41 SN - 00401706 AB - As the volume and variety of available data continue to proliferate, organizations increasingly turn to analytics in order to enhance business decision-making and ultimately, performance. However, the decisions made as a result of the analytics process are only as good as the data on which they are based. In this article, we examine the data quality problem and propose the use of control charting methods as viable tools for data quality monitoring and improvement. We motivate our discussion using an integrated case study example of a real aircraft maintenance database. We include discussions of the measures of multiple data quality dimensions in this online process. We highlight the lack of appropriate statistical methods for the analysis of this type of problem and suggest opportunities for research in control chart methods within the data quality environment. This article has supplementary material online. [ABSTRACT FROM AUTHOR] AB - Copyright of Technometrics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOFTWARE analytics KW - DECISION making in business KW - DATA acquisition systems KW - PROCESS control -- Statistical methods KW - DATA extraction KW - DATABASES KW - Attributes control chart KW - Data analytics KW - Data production process KW - Process improvement KW - Quality management N1 - Accession Number: 94574064; Jones-Farmer, L. Allison 1; Email Address: jde009@auburn.edu Ezell, Jeremy D. 1 Hazen, Benjamin T. 2; Email Address: benjamin.hazen@us.af.mil; Affiliation: 1: Department of Aviation and Supply Chain Management, Auburn University, Auburn, AL, 36849 2: 916th Maintenance Squadron, United States Air Force Seymour Johnson Air Force Base, NC, 27531; Source Info: Feb2014, Vol. 56 Issue 1, p29; Subject Term: SOFTWARE analytics; Subject Term: DECISION making in business; Subject Term: DATA acquisition systems; Subject Term: PROCESS control -- Statistical methods; Subject Term: DATA extraction; Subject Term: DATABASES; Author-Supplied Keyword: Attributes control chart; Author-Supplied Keyword: Data analytics; Author-Supplied Keyword: Data production process; Author-Supplied Keyword: Process improvement; Author-Supplied Keyword: Quality management; Number of Pages: 13p; Document Type: Article L3 - 10.1080/00401706.2013.804437 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94574064&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kehimkar, Benjamin AU - Hoggard, Jamin C. AU - Marney, Luke C. AU - Billingsley, Matthew C. AU - Fraga, Carlos G. AU - Bruno, Thomas J. AU - Synovec, Robert E. T1 - Correlation of rocket propulsion fuel properties with chemical composition using comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry followed by partial least squares regression analysis. JO - Journal of Chromatography A JF - Journal of Chromatography A Y1 - 2014/01/31/ VL - 1327 M3 - Article SP - 132 EP - 140 SN - 00219673 AB - Highlights: [•] A ‘reversed column’ GC×GC format was used to separate ten RP-1 fuels. [•] Partial least squares (PLS) analysis was used to analyze the GC×GC–TOFMS data. [•] Replicate data sets were separately analyzed using leave-one-out cross validation. [•] Connections between fuel composition and physical properties were investigated. [•] Compounds that appeared most influential for physical properties were identified. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chromatography A is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES -- Rocket engines KW - FUEL KW - TWO-dimensional models KW - GAS chromatography/Mass spectrometry (GC-MS) KW - TIME-of-flight mass spectrometry KW - LEAST squares KW - REGRESSION analysis KW - Chemometrics KW - Gas chromatography KW - GC×GC–TOFMS KW - Kerosene KW - PLS KW - RP-1 N1 - Accession Number: 94051108; Kehimkar, Benjamin 1 Hoggard, Jamin C. 1 Marney, Luke C. 1 Billingsley, Matthew C. 2 Fraga, Carlos G. 3 Bruno, Thomas J. 4 Synovec, Robert E. 1; Email Address: synovec@chem.washington.edu; Affiliation: 1: Department of Chemistry, Box 351700, University of Washington, Seattle, WA 98195, USA 2: Air Force Research Laboratory/RQRC, 10 E Saturn Boulevard, Edwards AFB, CA 93524, USA 3: Pacific Northwest National Laboratory, PO Box 999, MS P7-50, Richland, WA 99352, USA 4: Applied Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, CO 80305, USA; Source Info: Jan2014, Vol. 1327, p132; Subject Term: AIRPLANES -- Rocket engines; Subject Term: FUEL; Subject Term: TWO-dimensional models; Subject Term: GAS chromatography/Mass spectrometry (GC-MS); Subject Term: TIME-of-flight mass spectrometry; Subject Term: LEAST squares; Subject Term: REGRESSION analysis; Author-Supplied Keyword: Chemometrics; Author-Supplied Keyword: Gas chromatography; Author-Supplied Keyword: GC×GC–TOFMS; Author-Supplied Keyword: Kerosene; Author-Supplied Keyword: PLS; Author-Supplied Keyword: RP-1; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 454319 Other fuel dealers; NAICS/Industry Codes: 454310 Fuel Dealers; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.chroma.2013.12.060 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94051108&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ramezani, H. AU - Kalish, S. AU - Vitebskiy, I. AU - Kottos, T. T1 - Unidirectional Lasing Emerging from Frozen Light in Nonreciprocal Cavities. JO - Physical Review Letters JF - Physical Review Letters Y1 - 2014/01/31/ VL - 112 IS - 4 M3 - Article SP - 043904-1 EP - 043904-5 SN - 00319007 AB - We introduce a class of unidirectional lasing modes associated with the frozen mode regime of nonreciprocal slow-wave structures. Such asymmetric modes can only exist in cavities with broken time-reversal and space inversion symmetries. Their lasing frequency coincides with a spectral stationary inflection point of the underlying passive structure and is virtually independent of its size. These unidirectional lasers can be indispensable components of photonic integrated circuitry. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review Letters is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - SLOW wave structures KW - INTEGRATED circuits KW - PHOTONICS KW - LIGHT sources N1 - Accession Number: 94587337; Ramezani, H. 1 Kalish, S. 1 Vitebskiy, I. 2 Kottos, T. 1; Affiliation: 1: Department of Physics, Wesleyan University, Middletown, Connecticut 06459, USA 2: Air Force Research Laboratory, Sensors Directorate, Wright Patterson Air Force Base, Ohio 45433, USA; Source Info: 1/31/2014, Vol. 112 Issue 4, p043904-1; Subject Term: LASERS; Subject Term: SLOW wave structures; Subject Term: INTEGRATED circuits; Subject Term: PHOTONICS; Subject Term: LIGHT sources; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 5p; Document Type: Article L3 - 10.1103/PhysRevLett.112.043904 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94587337&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Johnsen, Rainer AU - Viggiano, Albert A. T1 - Mutual neutralization of atomic rare-gas cations (Ne+, Ar+, Kr+, Xe+) with atomic halide anions (Cl-, Br-, I-). JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2014/01/28/ VL - 140 IS - 4 M3 - Article SP - 044304-1 EP - 044304-7 PB - American Institute of Physics SN - 00219606 AB - We report thermal rate coefficients for 12 reactions of rare gas cations (Ne+, Ar+, Kr+, Xe+) with halide anions (Cl-, Br-, I-), comprising both mutual neutralization (MN) and transfer ionization. No rate coefficients have been previously reported for these reactions; however, the development of the Variable Electron and Neutral Density Attachment Mass Spectrometry technique makes it possible to measure the difference of the rate coefficients for pairs of parallel reactions in a Flowing Afterglow-Langmuir Probe apparatus. Measurements of 18 such combinations of competing reaction pairs yield an over-determined data set from which a consistent set of rate coefficients of the 12 MN reactions can be deduced. Unlike rate coefficients of MN reactions involving at least one polyatomic ion, which vary by at most a factor of ∼3, those of the atom-atom reactions vary by at least a factor 60 depending on the species. It is found that the rate coefficients involving light raregas ions are larger than those for the heavier rare-gas ions, but the opposite trend is observed in the progression from Cl- to I-. The largest rate coefficient is 6.5 × 10-8 cm³ s-1 for Ne+ with I-. Rate coefficients for Ar+, Kr+, and Xe+ reacting with Br2- are also reported. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CATIONS KW - RESEARCH KW - ANIONS KW - NOBLE gases KW - THERMAL properties KW - CHEMICAL reactions KW - MASS spectrometry N1 - Accession Number: 94255825; Shuman, Nicholas S. 1 Miller, Thomas M. 1 Johnsen, Rainer 2 Viggiano, Albert A. 1; Email Address: afrl.rvborgmailbox@kirtland.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA 2: Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA; Source Info: 1/28/2014, Vol. 140 Issue 4, p044304-1; Subject Term: CATIONS; Subject Term: RESEARCH; Subject Term: ANIONS; Subject Term: NOBLE gases; Subject Term: THERMAL properties; Subject Term: CHEMICAL reactions; Subject Term: MASS spectrometry; Number of Pages: 7p; Illustrations: 3 Charts, 6 Graphs; Document Type: Article L3 - 10.1063/1.4862151 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94255825&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Demeritte, Teresa AU - Fan, Zhen AU - Sinha, Sudarson Sekhar AU - Duan, Jinsong AU - Pachter, Ruth AU - Ray, Paresh C. T1 - Gold Nanocage Assemblies for Selective Second Harmonic Generation Imaging of Cancer Cell. JO - Chemistry - A European Journal JF - Chemistry - A European Journal Y1 - 2014/01/20/ VL - 20 IS - 4 M3 - Article SP - 1017 EP - 1022 SN - 09476539 AB - Second harmonic generation (SHG) imaging using near infrared laser light is the key to improving penetration depths, leading to biological understanding. Unfortunately, currently SHG imaging techniques have limited capability due to the poor signal-to-noise ratio, resulting from the low SHG efficiency of available dyes. Targeted tumor imaging over nontargeted tissues is also a challenge that needs to be overcome. Driven by this need, in this study, the development of two-photon SHG imaging of live cancer cell lines selectively by enhancement of the nonlinear optical response of gold nanocage assemblies is reported. Experimental results show that two-photon scattering intensity can be increased by few orders of magnitude by just developing nanoparticle self-assembly. Theoretical modeling indicates that the field enhancement values for the nanocage assemblies can explain, in part, the enhanced nonlinear optical properties. Our experimental data also show that A9 RNA aptamer conjugated gold nanocage assemblies can be used for targeted SHG imaging of the LNCaP prostate cancer cell line. Experimental results with the HaCaT normal skin cell lines show that bioconjugated nanocage-based assemblies demonstrate SHG imaging that is highly selective and will be able to distinguish targeted cancer cell lines from other nontargeted cell types. After optimization, this reported SHG imaging assay could have considerable application for biology. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemistry - A European Journal is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SECOND harmonic generation KW - INFRARED lasers KW - CANCER cells KW - BIOCONJUGATES KW - PROSTATE cancer KW - first hyperpolarizability KW - imaging agents KW - self-assembly KW - SHG imaging KW - theoretical modeling N1 - Accession Number: 93662851; Demeritte, Teresa 1 Fan, Zhen 1 Sinha, Sudarson Sekhar 1 Duan, Jinsong 2 Pachter, Ruth 2 Ray, Paresh C. 1; Affiliation: 1: Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS (USA) 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433 (USA); Source Info: Jan2014, Vol. 20 Issue 4, p1017; Subject Term: SECOND harmonic generation; Subject Term: INFRARED lasers; Subject Term: CANCER cells; Subject Term: BIOCONJUGATES; Subject Term: PROSTATE cancer; Author-Supplied Keyword: first hyperpolarizability; Author-Supplied Keyword: imaging agents; Author-Supplied Keyword: self-assembly; Author-Supplied Keyword: SHG imaging; Author-Supplied Keyword: theoretical modeling; Number of Pages: 6p; Document Type: Article L3 - 10.1002/chem.201303306 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93662851&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nelson, Jeremy T. AU - McKinley, R. Andy AU - Golob, Edward J. AU - Warm, Joel S. AU - Parasuraman, Raja T1 - Enhancing vigilance in operators with prefrontal cortex transcranial direct current stimulation (tDCS). JO - NeuroImage JF - NeuroImage Y1 - 2014/01/17/ VL - 85 IS - Part 3 M3 - Article SP - 909 EP - 917 SN - 10538119 AB - Abstract: Sustained attention, often referred to as vigilance in humans, is the ability to maintain goal-directed behavior for extended periods of time and respond to intermittent targets in the environment. With greater time-on-task the ability to detect targets decreases and reaction time increases—a phenomenon termed the vigilance decrement. The purpose of this study was to examine the role of dorsolateral prefrontal cortex in the vigilance decrement. Subjects (n=19) received prefrontal transcranial direct current stimulation (tDCS) at one of two different time points during a vigilance task (early or late). The impact of tDCS was examined using measures of behavior, hemispheric blood flow velocity, and regional blood oxygenation relative to sham stimulation. In the sham condition greater time-on-task was accompanied by fewer target detections and slower reaction times, indicating a vigilance decrement, and decreased blood flow velocity. tDCS significantly altered baseline task-induced physiologic and behavioral changes, dependent on the time of stimulation administration and electrode configuration (determining polarity of stimulation). Compared to the sham condition, with more time-on-task blood flow velocity decreased less and cerebral oxygenation increased more in the tDCS condition. Behavioral measures showed a significant improvement in target detection performance with tDCS compared to the sham stimulation. Signal detection analysis revealed a significant change in operator discriminability and response bias with increased time-on-task, as well as interactions between time of stimulation administration and electrode configuration. Current density modeling of tDCS showed high densities in the medial prefrontal cortex and anterior cingulate cortex. These findings confirm that cerebral hemodynamic measures provide an index of resource utilization and point to the central role of the frontal cortex in vigilance. Further, they suggest that modulation of the frontal cortices—and connected structures—influences the availability of vigilance resources. These findings indicate that tDCS may be well-suited to mitigate performance degradation in work settings requiring sustained attention or as a possible treatment for neurological or psychiatric disorders involving sustained attention. [Copyright &y& Elsevier] AB - Copyright of NeuroImage is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VIGILANCE (Psychology) KW - PREFRONTAL cortex KW - BRAIN stimulation KW - ACTION theory (Psychology) KW - REACTION time KW - OXYGENATORS KW - Attention KW - Enhancement KW - Hemodynamics KW - Noninvasive brain stimulation KW - Transcranial direct current stimulation KW - Vigilance N1 - Accession Number: 92870678; Nelson, Jeremy T. 1,2 McKinley, R. Andy 3; Email Address: andy.mckinley@wpafb.af.mil Golob, Edward J. 1 Warm, Joel S. 3 Parasuraman, Raja 4; Affiliation: 1: Neuroscience Program, Tulane University, 6400 Freret St., New Orleans, LA 70118, USA 2: Booz Allen Hamilton, 700 3: Air Force Research Laboratory, 2510 Fifth Street, Bldg 840, Wright-Patterson AFB, OH 45433-7951, USA 4: Center of Excellence in Neuroergonomics, Technology, & Cognition (CENTEC), George Mason University, 4400 University Drive, Fairfax, VA 2230, USA; Source Info: Jan2014, Vol. 85 Issue Part 3, p909; Subject Term: VIGILANCE (Psychology); Subject Term: PREFRONTAL cortex; Subject Term: BRAIN stimulation; Subject Term: ACTION theory (Psychology); Subject Term: REACTION time; Subject Term: OXYGENATORS; Author-Supplied Keyword: Attention; Author-Supplied Keyword: Enhancement; Author-Supplied Keyword: Hemodynamics; Author-Supplied Keyword: Noninvasive brain stimulation; Author-Supplied Keyword: Transcranial direct current stimulation; Author-Supplied Keyword: Vigilance; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.neuroimage.2012.11.061 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92870678&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Simpson, Thomas B. AU - Jia-Ming Liu AU - AlMulla, Mohammad AU - Usechak, Nicholas G. AU - Kovanis, Vassilios T1 - Limit-Cycle Dynamics with Reduced Sensitivity to Perturbations. JO - Physical Review Letters JF - Physical Review Letters Y1 - 2014/01/17/ VL - 112 IS - 2 M3 - Article SP - 1 EP - 1 SN - 00319007 AB - Limit-cycle oscillators are used to model a broad range of periodic nonlinear phenomena. Using the optically injected semiconductor laser as a paradigmatic example, we demonstrate that at specific operating points, the period-one oscillation frequency is simultaneously insensitive to multiple perturbation sources. In our system these include the temperature fluctuations experienced by the master and slave lasers as well as fluctuations in the bias current applied to the slave laser. Tuning of the oscillation frequency then depends only on the injected optical field amplitude. Experimental measurements are in detailed quantitative agreement with numerical modeling. These special operating points should prove valuable for developing ultrastable nonlinear oscillators, such as a narrow-linewidth, frequency-tunable photonic microwave oscillator. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review Letters is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERTURBATION (Quantum dynamics) KW - ELECTRIC oscillators KW - MICROWAVE oscillators KW - TEMPERATURE effect KW - NUCLEAR physics N1 - Accession Number: 109196346; Simpson, Thomas B. 1; Email Address: thomas.simpson@L-3com.com Jia-Ming Liu 2 AlMulla, Mohammad 2 Usechak, Nicholas G. 3 Kovanis, Vassilios 3; Affiliation: 1: L-3 Applied Technologies, Inc., 10770 Wateridge Circle, San Diego, California, USA 2: Electrical Engineering Department, University of California, Los Angeles, Los Angeles, California, USA 3: Air Force Research Laboratory, 2241 Avionics Circle, Wright-Patterson AFB, Ohio, USA; Source Info: Jan2014, Vol. 112 Issue 2, p1; Subject Term: PERTURBATION (Quantum dynamics); Subject Term: ELECTRIC oscillators; Subject Term: MICROWAVE oscillators; Subject Term: TEMPERATURE effect; Subject Term: NUCLEAR physics; Number of Pages: 1p; Document Type: Article L3 - 10.1103/PhysRevLett.112.023901 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=109196346&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tianxiang Nan AU - Ziyao Zhou AU - Ming Liu AU - Xi Yang AU - Yuan Gao AU - Assaf, Badih A. AU - Hwaider Lin AU - Velu, Siddharth AU - Xinjun Wang AU - Haosu Luo AU - Chen, Jimmy AU - Akhtar, Saad AU - Edward Hu AU - Rajiv, Rohit AU - Krishnan, Kavin AU - Sreedhar, Shalini AU - Heiman, Don AU - Howe, Brandon M. AU - Brown, Gail J. AU - Sun, Nian X. T1 - Quantification of strain and charge co-mediated magnetoelectric coupling on ultra-thin Permalloy/PMN-PT interface. JO - Scientific Reports JF - Scientific Reports Y1 - 2014/01/17/ M3 - Article SP - 1 EP - 6 SN - 20452322 AB - Strain and charge co-mediated magnetoelectric coupling are expected in ultra-thin ferromagnetic/ ferroelectric multiferroic heterostructures, which could lead to significantly enhanced magnetoelectric coupling. It is however challenging to observe the combined strain charge mediated magnetoelectric coupling, and difficult in quantitatively distinguish these two magnetoelectric coupling mechanisms. We demonstrated in this work, the quantification of the coexistence of strain and surface charge mediated magnetoelectric coupling on ultra-thin Ni0.79Fe0.21/PMN-PT interface by using a Ni0.79Fe0.21/Cu/PMN-PT heterostructure with only strain-mediated magnetoelectric coupling as a control. The NiFe/PMN-PT heterostructure exhibited a high voltage induced effective magnetic field change of 375 Oe enhanced by the surface charge at the PMN-PT interface. Without the enhancement of the charge-mediated magnetoelectric effect by inserting a Cu layer at the PMN-PT interface, the electric field modification of effective magnetic field was 202 Oe. By distinguishing the magnetoelectric coupling mechanisms, a pure surface charge modification of magnetism shows a strong correlation to polarization of PMN-PT. A non-volatile effective magnetic field change of 104 Oe was observed at zero electric field originates from the different remnant polarization state of PMN-PT. The strain and charge co-mediated magnetoelectric coupling in ultra-thin magnetic/ferroelectric heterostructures could lead to power efficient and non-volatile magnetoelectric devices with enhanced magnetoelectric coupling. [ABSTRACT FROM AUTHOR] AB - Copyright of Scientific Reports is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - FERROMAGNETIC materials KW - FERROELECTRIC materials KW - MULTIFERROIC materials KW - HETEROSTRUCTURES KW - ELECTRIC fields N1 - Accession Number: 94143237; Tianxiang Nan 1 Ziyao Zhou 1 Ming Liu 2 Xi Yang 1 Yuan Gao 1 Assaf, Badih A. 3 Hwaider Lin 1 Velu, Siddharth 1 Xinjun Wang 1 Haosu Luo 4 Chen, Jimmy 5 Akhtar, Saad 6 Edward Hu 7 Rajiv, Rohit 8 Krishnan, Kavin 9 Sreedhar, Shalini 10 Heiman, Don 3 Howe, Brandon M. 2 Brown, Gail J. 2 Sun, Nian X. 1; Email Address: n.sun@neu.edu; Affiliation: 1: Department of Electrical and Computer Engineering, Northeastern University, Boston, MA, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 3: Department of Physics, Northeastern University, Boston, MA 4: Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China 5: Winchester High School, Winchester, MA 6: Foxborough High School, Foxborough, MA 7: Boston Latin School, Boston, MA 8: Phillips Exeter Academy, Exeter, NH 9: Advanced Math & Science Academy Charter School, Marlborough MA 10: Weston High School, Weston, MA; Source Info: 1/17/2014, p1; Subject Term: STRAINS & stresses (Mechanics); Subject Term: FERROMAGNETIC materials; Subject Term: FERROELECTRIC materials; Subject Term: MULTIFERROIC materials; Subject Term: HETEROSTRUCTURES; Subject Term: ELECTRIC fields; Number of Pages: 6p; Document Type: Article L3 - 10.1038/srep03688 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94143237&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bilyeu, David L. AU - Yu, S.-T. John AU - Chen, Yung-Yu AU - Cambier, Jean-Luc T1 - A two-dimensional fourth-order unstructured-meshed Euler solver based on the CESE method. JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2014/01/15/ VL - 257 M3 - Article SP - 981 EP - 999 SN - 00219991 AB - Abstract: In this paper, Changʼs one-dimensional high-order CESE method [1] is extended to a two-dimensional, unstructured-triangular-meshed Euler solver. This fourth-order CESE method retains all favorable attributes of the original second-order CESE method, including: (i) flux conservation in space and time without using an approximated Riemann solver, (ii) genuine multi-dimensional algorithm without dimensional splitting, (iii) the CFL constraint for stable calculation remains to be ⩽1, (iv) the use of the most compact mesh stencil, involving only the immediate neighboring cells surrounding the cell where the solution at a new time step is sought, and (v) an explicit, unified space–time integration procedure without using a quadrature integration procedure. To demonstrate the new algorithm, three numerical examples are presented: (i) a moving vortex, (ii) acoustic wave interaction, and (iii) supersonic flow over a blunt body. Case 1 shows fourth-order convergence through mesh refinement. In Case 2, the nonlinear Euler solver is applied to simulate linear waves. In Case 3, superb shock capturing capabilities of the new fourth-order method without the carbuncle effect is demonstrated. [Copyright &y& Elsevier] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RIEMANN-Hilbert problems KW - APPROXIMATION theory KW - NUMERICAL calculations KW - NONLINEAR systems KW - SOUND waves KW - SUPERSONIC flow (Aerodynamics) KW - Euler solver KW - Fourth-order method KW - The CESE method KW - Triangular unstructured mesh N1 - Accession Number: 92037129; Bilyeu, David L. 1,2; Email Address: bilyeu.4@osu.edu Yu, S.-T. John 1; Email Address: yu.274@osu.edu Chen, Yung-Yu 1; Email Address: yyc@seety.org Cambier, Jean-Luc 2; Email Address: jean-luc.cambier@edwards.af.mil; Affiliation: 1: Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH 43210, United States 2: Air Force Research Laboratory, Edwards Air Force Base, CA 93524, United States; Source Info: Jan2014, Vol. 257, p981; Subject Term: RIEMANN-Hilbert problems; Subject Term: APPROXIMATION theory; Subject Term: NUMERICAL calculations; Subject Term: NONLINEAR systems; Subject Term: SOUND waves; Subject Term: SUPERSONIC flow (Aerodynamics); Author-Supplied Keyword: Euler solver; Author-Supplied Keyword: Fourth-order method; Author-Supplied Keyword: The CESE method; Author-Supplied Keyword: Triangular unstructured mesh; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.jcp.2013.09.044 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92037129&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stauffer, Hans U. AU - Miller, Joseph D. AU - Slipchenko, Mikhail N. AU - Meyer, Terrence R. AU - Prince, Benjamin D. AU - Roy, Sukesh AU - Gord, James R. T1 - Time- and frequency-dependent model of time-resolved coherent anti-Stokes Raman scattering (CARS) with a picosecond-duration probe pulse. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2014/01/14/ VL - 140 IS - 2 M3 - Article SP - 1 EP - 16 PB - American Institute of Physics SN - 00219606 AB - The hybrid femtosecond/picosecond coherent anti-Stokes Raman scattering (fs/ps CARS) technique presents a promising alternative to either fs time-resolved or ps frequency-resolved CARS in both gas-phase thermometry and condensed-phase excited-state dynamics applications. A theoretical description of time-dependent CARS is used to examine this recently developed probe technique, and quantitative comparisons of the full time-frequency evolution show excellent accuracy in predicting the experimental vibrational CARS spectra obtained for two model systems. The interrelated timeand frequency-domain spectral signatures of gas-phase species produced by hybrid fs/ps CARS are explored with a focus on gas-phase N2 vibrational CARS, which is commonly used as a thermometric diagnostic of combusting flows. In particular, we discuss the merits of the simple top-hat spectral filter typically used to generate the ps-duration hybrid fs/ps CARS probe pulse, including strong discrimination against non-resonant background that often contaminates CARS signal. It is further demonstrated, via comparison with vibrational CARS results on a time-evolving solvated organic chromophore, that this top-hat probe-pulse configuration can provide improved spectral resolution, although the degree of improvement depends on the dephasing timescales of the observed molecular modes and the duration and timing of the narrowband final pulse. Additionally, we discuss the virtues of a frequency-domain Lorentzian probe-pulse lineshape and its potential for improving the hybrid fs/ps CARS technique as a diagnostic in high-pressure gas-phase thermometry applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS research KW - RAMAN scattering KW - RESEARCH KW - INELASTIC scattering KW - LIGHT -- Scattering KW - ANTI-Stokes scattering KW - PICOSECOND pulses KW - GAS phase reactions N1 - Accession Number: 93672865; Stauffer, Hans U. 1; Email Address: hans.stauffer@gmail.com Miller, Joseph D. 2,3 Slipchenko, Mikhail N. 1 Meyer, Terrence R. 3 Prince, Benjamin D. 4 Roy, Sukesh 1 Gord, James R. 2; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield St., Suite 301, Dayton, Ohio 45431, USA 2: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, Ohio 45433, USA 3: Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, USA 4: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117, USA; Source Info: 1/14/2014, Vol. 140 Issue 2, p1; Subject Term: PHYSICS research; Subject Term: RAMAN scattering; Subject Term: RESEARCH; Subject Term: INELASTIC scattering; Subject Term: LIGHT -- Scattering; Subject Term: ANTI-Stokes scattering; Subject Term: PICOSECOND pulses; Subject Term: GAS phase reactions; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 16p; Illustrations: 1 Diagram, 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1063/1.4860475 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93672865&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ibey, Bennett L. AU - Ullery, Jody C. AU - Pakhomova, Olga N. AU - Roth, Caleb C. AU - Semenov, Iurii AU - Beier, Hope T. AU - Tarango, Melissa AU - Xiao, Shu AU - Schoenbach, Karl H. AU - Pakhomov, Andrei G. T1 - Bipolar nanosecond electric pulses are less efficient at electropermeabilization and killing cells than monopolar pulses. JO - Biochemical & Biophysical Research Communications JF - Biochemical & Biophysical Research Communications Y1 - 2014/01/10/ VL - 443 IS - 2 M3 - Article SP - 568 EP - 573 SN - 0006291X AB - Highlights: [•] Bipolar nanosecond pulses are less effective at plasma membrane permeabilization. [•] Bipolar nanosecond pulses are much less effective at killing cells. [•] Cell electropermeabilization is not solely dependent on peak electric field. [ABSTRACT FROM AUTHOR] AB - Copyright of Biochemical & Biophysical Research Communications is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CELL membranes KW - CELLS -- Permeability KW - ELECTRIC fields KW - KILLER cells KW - ELECTROMAGNETIC pulses KW - Bipolar KW - Calcium KW - CHO KW - FM1-43 KW - Monopolar KW - Nanosecond electric pulse N1 - Accession Number: 93655248; Ibey, Bennett L. 1; Email Address: bennettibey@gmail.com Ullery, Jody C. 2 Pakhomova, Olga N. 3 Roth, Caleb C. 2,4 Semenov, Iurii 3 Beier, Hope T. 1 Tarango, Melissa 2 Xiao, Shu 3 Schoenbach, Karl H. 3 Pakhomov, Andrei G. 3; Affiliation: 1: Radio Frequency Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory, JBSA Fort Sam Houston, TX, USA 2: General Dynamics Information Systems, JBSA Fort Sam Houston, TX, USA 3: Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, USA 4: Department of Radiological Sciences, University of Texas Health Science Center San Antonio, San Antonio, TX 78229 USA; Source Info: Jan2014, Vol. 443 Issue 2, p568; Subject Term: CELL membranes; Subject Term: CELLS -- Permeability; Subject Term: ELECTRIC fields; Subject Term: KILLER cells; Subject Term: ELECTROMAGNETIC pulses; Author-Supplied Keyword: Bipolar; Author-Supplied Keyword: Calcium; Author-Supplied Keyword: CHO; Author-Supplied Keyword: FM1-43; Author-Supplied Keyword: Monopolar; Author-Supplied Keyword: Nanosecond electric pulse; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.bbrc.2013.12.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93655248&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tao Chen AU - Huisheng Peng AU - Michael Durstock AU - Liming Dai T1 - High-performance transparent and stretchable all-solid supercapacitors based on highly aligned carbon nanotube sheets. JO - Scientific Reports JF - Scientific Reports Y1 - 2014/01/10/ M3 - Article SP - 1 EP - 7 SN - 20452322 AB - By using highly aligned carbon nanotube (CNT) sheets of excellent optical transmittance and mechanical stretchability as both the current collector and active electrode, high-performance transparent and stretchable all-solid supercapacitors with a good stability were developed. A transmittance up to 75% at the wavelength of 550 nm was achieved for a supercapacitor made from a cross-over assembly of two single-layer CNT sheets. The transparent supercapacitor has a specific capacitance of 7.3 F g-1 and can be biaxially stretched up to 30% strain without any obvious change in electrochemical performance even over hundreds stretching cycles. [ABSTRACT FROM AUTHOR] AB - Copyright of Scientific Reports is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCAPACITORS KW - BEDDING KW - CARBON nanotubes KW - LIGHT elements KW - TRANSMITTANCE (Physics) KW - CARBON NANOTUBES AND KW - ELECTROCHEMISTRY KW - ELECTRONIC DEVICES KW - ELECTRONIC MATERIALS KW - FULLERENES N1 - Accession Number: 94518270; Tao Chen 1 Huisheng Peng 2 Michael Durstock 3 Liming Dai 1; Email Address: liming.dai@case.edu; Affiliation: 1: Center of Advanced Science and Engineering for Carbon (Case4Carbon), Department of Macromolecular Science and Engineering, CaseWestern Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106 (USA) 2: State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, RXBP, Wright- Patterson Air Force Base, OH 45433, USA; Source Info: 1/10/2014, p1; Subject Term: SUPERCAPACITORS; Subject Term: BEDDING; Subject Term: CARBON nanotubes; Subject Term: LIGHT elements; Subject Term: TRANSMITTANCE (Physics); Author-Supplied Keyword: CARBON NANOTUBES AND; Author-Supplied Keyword: ELECTROCHEMISTRY; Author-Supplied Keyword: ELECTRONIC DEVICES; Author-Supplied Keyword: ELECTRONIC MATERIALS; Author-Supplied Keyword: FULLERENES; NAICS/Industry Codes: 414330 Linen, drapery and other textile furnishings merchant wholesalers; NAICS/Industry Codes: 442298 All other home furnishings stores; NAICS/Industry Codes: 314120 Curtain and Linen Mills; Number of Pages: 7p; Document Type: Article L3 - 10.1038/srep03612 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94518270&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zahran, Elsayed M. AU - Bedford, Nicholas M. AU - Nguyen, Michelle A. AU - Yao-Jen Chang AU - Guiton, Beth S. AU - Naik, Rajesh R. AU - Bachas, Leonidas G. AU - Knecht, Marc R. T1 - Light-Activated Tandem Catalysis Driven by Multicomponent Nanomaterials. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2014/01/08/ VL - 136 IS - 1 M3 - Article SP - 32 EP - 35 SN - 00027863 AB - Transitioning energy-intensive and environmentally intensive processes toward sustainable conditions is necessary in light of the current global condition. To this end, photocatalytic processes represent new approaches for H2 generation; however, their application toward tandem catalytic reactivity remains challenging. Here, we demonstrate that metal oxide materials decorated with noble metal nanoparticles advance visible light photocatalytic activity toward new reactions not typically driven by light. For this, Pd nanoparticles were deposited onto Cu2O cubes to generate a composite structure. Once characterized, their hydrodehalogenation activity was studied via the reductive dechlorination of polychlorinated biphenyls. To this end, tandem catalytic reactivity was observed with H2 generation via H2O reduction at the Cu2O surface, followed by dehalogenation at the Pd using the in situ generated H2. Such results present methods to achieve sustainable catalytic technologies by advancing photocatalytic approaches toward new reaction systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CATALYSIS KW - NANOSTRUCTURED materials KW - PHOTOCATALYSIS KW - INTERSTITIAL hydrogen generation KW - METALLIC oxides KW - PRECIOUS metals KW - DECHLORINATION (Chemistry) KW - POLYCHLORINATED biphenyls N1 - Accession Number: 93882913; Zahran, Elsayed M. 1 Bedford, Nicholas M. 1,2 Nguyen, Michelle A. 1 Yao-Jen Chang 3 Guiton, Beth S. 3,4 Naik, Rajesh R. 2 Bachas, Leonidas G. 1; Email Address: bachas@miami.edu Knecht, Marc R. 1; Email Address: knecht@miami.edu; Affiliation: 1: Department of Chemistry, University of Miami, Coral Gables, Florida 33146, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, United States 3: Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States 4: Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States; Source Info: 1/8/2014, Vol. 136 Issue 1, p32; Subject Term: CATALYSIS; Subject Term: NANOSTRUCTURED materials; Subject Term: PHOTOCATALYSIS; Subject Term: INTERSTITIAL hydrogen generation; Subject Term: METALLIC oxides; Subject Term: PRECIOUS metals; Subject Term: DECHLORINATION (Chemistry); Subject Term: POLYCHLORINATED biphenyls; NAICS/Industry Codes: 212220 Gold and silver ore mining; NAICS/Industry Codes: 423940 Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers; NAICS/Industry Codes: 212221 Gold Ore Mining; NAICS/Industry Codes: 418920 Mineral, ore and precious metal merchant wholesalers; Number of Pages: 4p; Document Type: Article L3 - 10.1021/ja410465s UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93882913&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Look, D. C. AU - Leedy, K. D. AU - Thomson, D. B. AU - Wang, B. T1 - Defects in highly conductive ZnO for transparent electrodes and plasmonics. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2014/01/07/ VL - 115 IS - 1 M3 - Article SP - 1 EP - 4 PB - American Institute of Physics SN - 00218979 AB - The effects of point and extended defects on concentration n and mobility μ are studied in thin films of Ga-doped ZnO (GZO) grown by pulsed laser deposition on quartz or ZnO itself. The most important defects in the bulk are point defects, mainly Zn vacancies, and their concentrations are similar in GZO/quartz and in GZO/ZnO. On the other hand, the dominant defects at the interface are extended defects, and their concentrations are much higher in GZO/quartz than in GZO/ZnO. Consequently, the mobility in GZO/quartz is lower and more thickness-dependent than that in GZO/ZnO. The effects of point and extended defects can be mitigated by annealing on Zn foil, and by use of buffer layers, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide KW - RESEARCH KW - ZINC compounds KW - ELECTRODES KW - PLASMONS (Physics) KW - OXIDES N1 - Accession Number: 93583733; Look, D. C. 1,2,3; Email Address: david.look@wright.edu Leedy, K. D. 3 Thomson, D. B. 3 Wang, B. 4; Affiliation: 1: Semiconductor Research Center, Wright State University, Dayton, Ohio 45435, USA 2: Wyle Laboratories, Inc., 2601 Mission Point Boulevard, Suite 300, Dayton, Ohio 45431, USA 3: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Ohio 45433, USA 4: Solid State Scientific Corporation, 27-2 Wright Road, Hollis, New Hampshire 03049, USA; Source Info: 2014, Vol. 115 Issue 1, p1; Subject Term: ZINC oxide; Subject Term: RESEARCH; Subject Term: ZINC compounds; Subject Term: ELECTRODES; Subject Term: PLASMONS (Physics); Subject Term: OXIDES; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 4p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1063/1.483795 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93583733&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Steenbergen, E. H. AU - Elhamri, S. AU - Mitchel, W. C. AU - Shin Mou AU - Brown, G. J. T1 - Carrier transport properties of Be-doped InAs/InAsSb type-II infrared superlattices. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2014/01/06/ VL - 104 IS - 1 M3 - Article SP - 011104-1 EP - 011104-3 PB - American Institute of Physics SN - 00036951 AB - The InAs/InAsSb type-II superlattice materials studied to date for infrared detector applications have been residually n-type, but p-type absorber regions with minority carrier electrons can result in increased photodiode quantum efficiency, RoA, and detectivity. Therefore, Be-doped InAs/InAsSb superlattices were investigated to determine the p-type InAs/InAsSb superlattice material transport properties essential to developing high quality photodiode absorber materials. Hall measurements performed at 10K revealed that the superlattice converted to p-type with Be-doping of 3 × 1016 cm–3 and the hole mobility reached 24 400 cm2/Vs. Photoresponse measurements at 10K confirmed the 175 meV bandgap and material optical quality. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - INFRARED detectors KW - P-type semiconductors KW - PHOTODIODES KW - QUANTUM efficiency (Physics) KW - QUALITY control -- Optical methods N1 - Accession Number: 93644419; Steenbergen, E. H. 1; Email Address: Elizabeth.Steenbergen.1@us.af.mil Elhamri, S. 2 Mitchel, W. C. 1 Shin Mou 1 Brown, G. J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433, USA 2: Department of Physics, University of Dayton, Dayton, Ohio 45469, USA; Source Info: 1/6/2014, Vol. 104 Issue 1, p011104-1; Subject Term: SUPERLATTICES; Subject Term: INFRARED detectors; Subject Term: P-type semiconductors; Subject Term: PHOTODIODES; Subject Term: QUANTUM efficiency (Physics); Subject Term: QUALITY control -- Optical methods; Number of Pages: 3p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.4861159 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93644419&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dickerson, Matthew B. AU - Lyon, Wanda J. AU - Gruner, William E. AU - Mirau, Peter A. AU - Jespersen, Michael L. AU - Fang, Yunnan AU - Sandhage, Kenneth H. AU - Naik, Rajesh R. T1 - Biomimetics: Unlocking the Latent Antimicrobial Potential of Biomimetically Synthesized Inorganic Materials (Adv. Funct. Mater. 34/2013). JO - Advanced Functional Materials JF - Advanced Functional Materials Y1 - 2014/01/05/ VL - 23 IS - 34 M3 - Article SP - 4166 EP - 4166 SN - 1616301X AB - The cover page of the journal "Advanced Functional Materials" is presented. KW - MATERIALS science KW - MAGAZINE covers KW - antimicrobial materials KW - biomedical applications KW - biomimetics KW - biomineralization KW - bionanotechnology KW - functional coatings N1 - Accession Number: 90133984; Dickerson, Matthew B. 1 Lyon, Wanda J. 2 Gruner, William E. 2 Mirau, Peter A. 1 Jespersen, Michael L. 1 Fang, Yunnan 3 Sandhage, Kenneth H. 3 Naik, Rajesh R. 1; Affiliation: 1: Materials and Manufacturing Directorate and Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 2: Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 3: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; Source Info: Jan2014, Vol. 23 Issue 34, p4166; Subject Term: MATERIALS science; Subject Term: MAGAZINE covers; Author-Supplied Keyword: antimicrobial materials; Author-Supplied Keyword: biomedical applications; Author-Supplied Keyword: biomimetics; Author-Supplied Keyword: biomineralization; Author-Supplied Keyword: bionanotechnology; Author-Supplied Keyword: functional coatings; Number of Pages: 1p; Document Type: Article L3 - 10.1002/adfm.201370169 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90133984&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dickerson, Matthew B. AU - Lyon, Wanda J. AU - Gruner, William E. AU - Mirau, Peter A. AU - Jespersen, Michael L. AU - Fang, Yunnan AU - Sandhage, Kenneth H. AU - Naik, Rajesh R. T1 - Unlocking the Latent Antimicrobial Potential of Biomimetically Synthesized Inorganic Materials. JO - Advanced Functional Materials JF - Advanced Functional Materials Y1 - 2014/01/05/ VL - 23 IS - 34 M3 - Article SP - 4236 EP - 4245 SN - 1616301X AB - Inspired by biomineralization, biomimetic approaches utilize biomolecules and synthetic analogs to produce materials of controlled chemistry, morphology, and function under relatively benign conditions. A common characteristic of biological and biomimetic mineral-forming processes is the generation of mineral/biomolecule nanocomposites. In this work, it is demonstrated that a facile chemical reaction may be utilized to halogenate the nitrogen-containing moieties of the organics entrapped within bio-inorganic composites to yield halamine compounds. This process provides rapid and potent bactericidal activity to biomimetically and biologically produced materials that otherwise lack such functionality. Additionally, bio-inorganic composites containing the chlorinated peptide protamine are effective in rapidly neutralizing Bacillus spores (≥99.97% reduction in colony forming units within 10 min). The straightforward nature of the described process, and the efficacy of halamine compounds in neutralizing biological and chemical agents, provide new applicability to biogenic and biomimetic materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Advanced Functional Materials is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BACTERICIDAL action KW - BIOMOLECULES KW - CHEMICAL reactions KW - BIOMINERALIZATION KW - MORPHOLOGY KW - antimicrobial materials KW - biomedical applications KW - biomimetics KW - biomineralization KW - bionanotechnology KW - functional coatings N1 - Accession Number: 90133993; Dickerson, Matthew B. 1 Lyon, Wanda J. 2 Gruner, William E. 2 Mirau, Peter A. 1 Jespersen, Michael L. 1 Fang, Yunnan 3 Sandhage, Kenneth H. 3 Naik, Rajesh R. 1; Affiliation: 1: Materials and Manufacturing Directorate and Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 2: Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 3: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; Source Info: Jan2014, Vol. 23 Issue 34, p4236; Subject Term: BACTERICIDAL action; Subject Term: BIOMOLECULES; Subject Term: CHEMICAL reactions; Subject Term: BIOMINERALIZATION; Subject Term: MORPHOLOGY; Author-Supplied Keyword: antimicrobial materials; Author-Supplied Keyword: biomedical applications; Author-Supplied Keyword: biomimetics; Author-Supplied Keyword: biomineralization; Author-Supplied Keyword: bionanotechnology; Author-Supplied Keyword: functional coatings; Number of Pages: 10p; Document Type: Article L3 - 10.1002/adfm.201202851 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90133993&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Freeman, Jacob A. AU - Roy, Christopher J. T1 - Verification and validation of Reynolds-averaged Navier–Stokes turbulence models for external flow. JO - Aerospace Science & Technology JF - Aerospace Science & Technology Y1 - 2014/01// VL - 32 IS - 1 M3 - Article SP - 84 EP - 93 SN - 12709638 AB - Abstract: The Spalart–Allmaras (S-A) turbulence model in the NASA-Langley CFL3D and FUN3D flow solvers has been previously verified 2nd-order accurate. For low subsonic 2-D applications (turbulent flat plate and NACA 0012 airfoil at ), solutions from the S-A, S-A with Rotation and Curvature (SARC), Menter Shear-Stress Transport (SST), and Wilcox turbulence models in commercial flow solvers, Cobalt and RavenCFD, are compared with NASA results for code verification. Of 36 case evaluations, each of which uses 5 systematically refined computational meshes, only 7 approach 2nd-order observed accuracy, but 27 cases show 1st-order or better, indicating the formal order may be less than 2 for these applications. Since Cobalt and RavenCFD turbulence models perform comparable to NASAʼs verified models and since rigorous code verification is not possible without access to source code, the presented evidence suggests these turbulence models are implemented correctly for these or similar flow conditions and configurations. For solution verification, estimates of numerical uncertainty are less than 0.5% for 94% of the cases and less than 0.1% for 61% of the cases. For validation, the turbulent flat plate solutions match experiment skin friction within 4.8% for , and for airfoil drag coefficient, S-A and SST agree within 1.2% of experiment, SARC 2%, and 4%. [Copyright &y& Elsevier] AB - Copyright of Aerospace Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REYNOLDS equations KW - NAVIER-Stokes equations KW - TURBULENCE -- Mathematical models KW - EXTERNAL flows (Fluid mechanics) KW - SHEARING force KW - DRAG coefficient KW - Code verification KW - Computational fluid dynamics KW - Reynold-averaged Navier–Stokes turbulence models KW - Solution verification KW - Subsonic compressible flow KW - Verification and validation N1 - Accession Number: 94304707; Freeman, Jacob A. 1; Email Address: jacob.freeman@us.af.mil Roy, Christopher J. 2; Email Address: cjroy@vt.edu; Affiliation: 1: United States Air Force, United States 2: Department of Aerospace & Ocean Engineering, Virginia Tech, 215 Randolph Hall, Blacksburg, VA 24061, USA; Source Info: Jan2014, Vol. 32 Issue 1, p84; Subject Term: REYNOLDS equations; Subject Term: NAVIER-Stokes equations; Subject Term: TURBULENCE -- Mathematical models; Subject Term: EXTERNAL flows (Fluid mechanics); Subject Term: SHEARING force; Subject Term: DRAG coefficient; Author-Supplied Keyword: Code verification; Author-Supplied Keyword: Computational fluid dynamics; Author-Supplied Keyword: Reynold-averaged Navier–Stokes turbulence models; Author-Supplied Keyword: Solution verification; Author-Supplied Keyword: Subsonic compressible flow; Author-Supplied Keyword: Verification and validation; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ast.2013.11.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94304707&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Welsh III, General Mark A. AU - Carlisle, General Hawk T1 - Strengthening Understanding and Engagement with China's Air Force. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2014/01//Jan/Feb2014 VL - 28 IS - 1 M3 - Opinion SP - 4 EP - 10 PB - Superintendent of Documents SN - 1555385X AB - The authors offer their views on the visit of the U.S. Air Force to China on September 24-30, 2013 aimed to improve understanding between two armed forces and to reduce military-to-military friction. They agree with the general opinion that constructive relationship between the U.S. and China is important to the continued stability and prosperity of the Asia-Pacific and the world. They believe on the need for the exchange of airpower concepts between the two air forces. KW - MILITARY relations KW - FRICTION (Military science) KW - AIR power (Military science) KW - CHINA KW - UNITED States KW - UNITED States. Air Force KW - CHINA. Kong jun N1 - Accession Number: 93664164; Welsh III, General Mark A. 1 Carlisle, General Hawk 2; Affiliation: 1: BS, USAFA; MS, Webster University) is Chief of Staff, United States Air Force, Washington, DC 2: BS, USAFA; MBA, Golden Gate University) is Commander, Pacific Air Forces (PACAF); Source Info: Jan/Feb2014, Vol. 28 Issue 1, p4; Subject Term: MILITARY relations; Subject Term: FRICTION (Military science); Subject Term: AIR power (Military science); Subject Term: CHINA; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force Company/Entity: CHINA. Kong jun; NAICS/Industry Codes: 928110 National Security; Number of Pages: 7p; Document Type: Opinion UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93664164&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - JOHNSON, ERIC M. T1 - EXAMINING BLASPHEMY: INTERNATIONAL LAW, NATIONAL SECURITY AND THE U.S. FOREIGN POLICY REGARDING FREE SPEECH. JO - Air Force Law Review JF - Air Force Law Review Y1 - 2014/01// VL - 71 M3 - Article SP - 25 EP - 67 PB - Superintendent of Documents SN - 00948381 AB - The article focuses on the instability caused by blasphemy across the world and the U.S. foreign policy on the freedom of expression. Topics discussed include the freedom of expression in international law including the Universal Declaration of Human Rights and the International Covenant on Civil and Political Rights, the U.S foreign policy regarding free speech and comparison of the blasphemy and freedom of expression laws in the U.S, Tunisia, and Egypt. KW - BLASPHEMY -- Law & legislation KW - FREEDOM of speech KW - INTERNATIONAL cooperation KW - NATIONAL security -- United States KW - UNITED States KW - UNITED Nations. General Assembly. Universal Declaration of Human Rights KW - INTERNATIONAL Covenant on Civil & Political Rights (1966) N1 - Accession Number: 98679436; JOHNSON, ERIC M. 1; Affiliation: 1: Judge Advocate, United States Air Force; Source Info: 2014, Vol. 71, p25; Subject Term: BLASPHEMY -- Law & legislation; Subject Term: FREEDOM of speech; Subject Term: INTERNATIONAL cooperation; Subject Term: NATIONAL security -- United States; Subject Term: UNITED States; Company/Entity: UNITED Nations. General Assembly. Universal Declaration of Human Rights; Reviews & Products: INTERNATIONAL Covenant on Civil & Political Rights (1966); NAICS/Industry Codes: 928110 National Security; Number of Pages: 43p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98679436&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - AUGUSTINE, ZACHARY P. T1 - CYBER NEUTRALITY: A TEXTUAL ANALYSIS OF TRADITIONAL JUS IN BELLO NEUTRALITY RULES THROUGH A PURPOSEBASED LENS. JO - Air Force Law Review JF - Air Force Law Review Y1 - 2014/01// VL - 71 M3 - Article SP - 69 EP - 106 PB - Superintendent of Documents SN - 00948381 AB - The article focuses on the importance of neutrality rules in cyberspace, and its application to a belligerent's cyber operations. Topics discussed include the Hague Conventions of 1899 and 1907, the international standards of attribution and the challenges in application of neutrality rules to cyber activities, and the neutrality consequences of malicious cyber activities. It mentions the neutrality rules that limits misleading cyber practices in an armed conflict and the belligerency concept. KW - ARMED neutrality KW - COMPUTER fraud -- Law & legislation KW - UNLAWFUL combatants KW - BELLIGERENCY KW - INTERNATIONAL Peace Conference (1st: 1899: Hague, Netherlands) KW - INTERNATIONAL Peace Conference (2nd : 1907 : Hague, Netherlands) N1 - Accession Number: 98679437; AUGUSTINE, ZACHARY P. 1; Affiliation: 1: Judge Advocate, United States Air Force; Source Info: 2014, Vol. 71, p69; Subject Term: ARMED neutrality; Subject Term: COMPUTER fraud -- Law & legislation; Subject Term: UNLAWFUL combatants; Subject Term: BELLIGERENCY; Subject Term: INTERNATIONAL Peace Conference (1st: 1899: Hague, Netherlands); Subject Term: INTERNATIONAL Peace Conference (2nd : 1907 : Hague, Netherlands); Number of Pages: 38p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98679437&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Loukitcheva, M. AU - Solanki, S. K. AU - White, S. M. T1 - The chromosphere above sunspots at millimeter wavelengths. JO - Astronomy & Astrophysics / Astronomie et Astrophysique JF - Astronomy & Astrophysics / Astronomie et Astrophysique Y1 - 2014/01// VL - 561 M3 - Article SP - 1 EP - 9 SN - 00046361 AB - Aims. The aim of this paper is to demonstrate that millimeter wave data can be used to distinguish between various atmospheric models of sunspots, whose temperature structure in the upper photosphere and chromosphere has been the source of some controversy. Methods. We use observations of the temperature contrast (relative to the quiet Sun) above a sunspot umbra at 3.5 mm obtained with the Berkeley-Illinois-Maryland Array (BIMA), complemented by submm observations from Lindsey & Kopp (1995) and 2 cm observations with the Very Large Array. These are compared with the umbral contrast calculated from various atmospheric models of sunspots. Results. Current mm and submm observational data suggest that the brightness observed at these wavelengths is low compared to the most widely used sunspot models. These data impose strong constraints on the temperature and density stratifications of the sunspot umbral atmosphere, in particular on the location and depth of the temperature minimum and the location of the transition region. Conclusions. A successful model that is in agreement with millimeter umbral brightness should have an extended and deep temperature minimum (below 3000 K). Better spatial resolution as well as better wavelength coverage are needed for a more complete determination of the chromospheric temperature stratification above sunspot umbrae. [ABSTRACT FROM AUTHOR] AB - Copyright of Astronomy & Astrophysics / Astronomie et Astrophysique is the property of EDP Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STARSPOTS KW - SOLAR activity KW - ASTRONOMICAL observations KW - WAVELENGTHS KW - SOLAR chromosphere KW - Sun: chromosphere KW - Sun: radio radiation KW - sunspots N1 - Accession Number: 94230439; Loukitcheva, M. 1,2; Email Address: lukicheva@mps.mpg.de Solanki, S. K. 1,3 White, S. M. 4; Affiliation: 1: Max-Planck-Institut for Sonnensystemforschung, 37191 Katlenburg-Lindau, Germany 2: Astronomical Institute, St. Petersburg University, Universitetskii pr. 28, 198504 St. Petersburg, Russia 3: School of Space Research, Kyung Hee University, Yongin, Gyeonggi 446-701, Korea 4: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, NM, USA; Source Info: Jan2014, Vol. 561, p1; Subject Term: STARSPOTS; Subject Term: SOLAR activity; Subject Term: ASTRONOMICAL observations; Subject Term: WAVELENGTHS; Subject Term: SOLAR chromosphere; Author-Supplied Keyword: Sun: chromosphere; Author-Supplied Keyword: Sun: radio radiation; Author-Supplied Keyword: sunspots; Number of Pages: 9p; Document Type: Article L3 - 10.1051/0004-6361/201321321 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94230439&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maschmann, Matthew R. AU - Ehlert, Gregory J. AU - Tawfick, Sameh AU - Hart, A. John AU - Baur, Jeffery W. T1 - Continuum analysis of carbon nanotube array buckling enabled by anisotropic elastic measurements and modeling. JO - Carbon JF - Carbon Y1 - 2014/01// VL - 66 M3 - Article SP - 377 EP - 386 SN - 00086223 AB - Abstract: For the first time, carbon nanotube (CNT) forests are fully characterized as transversely isotropic continuum material. Each of the five independent elastic constants is experimentally obtained using a combination of nanoindenter-based uniaxial compression and shear testing, in situ SEM compression, and digital image correlation (DIC) of vertically and laterally oriented CNT microstructure columns. Material properties are highly anisotropic, with an axial modulus (165–275MPa) that is nearly two orders of magnitude greater than the transverse modulus (2.5–2.7MPa) and the out of plane shear modulus (0.8–1.6MPa). The Poisson’s ratios along three mutually orthogonal axes, measured directly by simultaneous in situ DIC evaluation of axial and transverse strain, are found to be similarly anisotropic (ν 12 =0.35, ν 23 =0.1, ν 21 =0.005). A Timoshenko beam model is then developed to accurately predict the critical buckling stress of the vertically oriented columns using a subset of these anisotropic properties and considering inelastic column buckling. These results show that the critical bucking stress of CNT microstructures vary predictably with geometry and that continuum models with appropriate material constants may be applied to analyze CNT microstructures and evaluate their stability for many applications. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - BUCKLING (Mechanics) KW - ANISOTROPY KW - ELASTICITY KW - ELASTIC constants KW - AXIAL loads N1 - Accession Number: 91740691; Maschmann, Matthew R. 1,2,3; Email Address: maschmannm@missouri.edu Ehlert, Gregory J. 1 Tawfick, Sameh 4,5 Hart, A. John 4,5 Baur, Jeffery W. 1; Email Address: Jeffery.Baur@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright Patterson Air Force Base, OH 45433, USA 2: Universal Technology Corporation, Beavercreek, OH 45432, USA 3: Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO 65211, USA 4: Mechanosynthesis Group, Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA 5: Mechanosynthesis Group, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 48109, USA; Source Info: Jan2014, Vol. 66, p377; Subject Term: CARBON nanotubes; Subject Term: BUCKLING (Mechanics); Subject Term: ANISOTROPY; Subject Term: ELASTICITY; Subject Term: ELASTIC constants; Subject Term: AXIAL loads; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.carbon.2013.09.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91740691&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McIntire, John P. AU - Havig, Paul R. AU - Geiselman, Eric E. T1 - Stereoscopic 3D displays and human performance: A comprehensive review. JO - Displays JF - Displays Y1 - 2014/01// VL - 35 IS - 1 M3 - Article SP - 18 EP - 26 SN - 01419382 AB - Highlights: [•] We reviewed the performance implications of stereoscopic 3D displays versus non-stereo 2D. [•] We summarized and classified results of over 160 publications. [•] We found that stereo 3D display viewing improved performance in 60% of experiments. [•] In only 25% of experiments, S3D displays clearly offered no benefit over 2D viewing. [•] Stereoscopic 3D displays were most helpful for the spatial manipulation of objects. [ABSTRACT FROM AUTHOR] AB - Copyright of Displays is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STEREOSCOPIC cameras KW - THREE-dimensional display systems KW - CLASSIFICATION KW - SPATIAL analysis (Statistics) KW - IMAGE processing KW - Binocular vision KW - Depth perception KW - Human factors KW - S3D KW - Stereopsis KW - Three-dimensional display N1 - Accession Number: 94569355; McIntire, John P. 1; Email Address: john.mcintire.1@us.af.mil Havig, Paul R. 1 Geiselman, Eric E. 1; Affiliation: 1: 711th Human Performance Wing/RHCV, US Air Force Research Laboratory, Dayton, OH, USA; Source Info: Jan2014, Vol. 35 Issue 1, p18; Subject Term: STEREOSCOPIC cameras; Subject Term: THREE-dimensional display systems; Subject Term: CLASSIFICATION; Subject Term: SPATIAL analysis (Statistics); Subject Term: IMAGE processing; Author-Supplied Keyword: Binocular vision; Author-Supplied Keyword: Depth perception; Author-Supplied Keyword: Human factors; Author-Supplied Keyword: S3D; Author-Supplied Keyword: Stereopsis; Author-Supplied Keyword: Three-dimensional display; NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 812922 One-Hour Photofinishing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.displa.2013.10.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94569355&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gordeyev, Stanislav AU - Lucca, Nicholas AU - Jumper, Eric AU - Hird, Kyle AU - Juliano, Thomas AU - Gregory, James AU - Thordahl, James AU - Wittich, Donald T1 - Comparison of unsteady pressure fields on turrets with different surface features using pressure-sensitive paint. JO - Experiments in Fluids JF - Experiments in Fluids Y1 - 2014/01// VL - 55 IS - 1 M3 - Article SP - 1 EP - 20 SN - 07234864 AB - Spatially temporally resolved unsteady pressure fields on a surface of a hemisphere-on-cylinder turret with either a flat or a conformal window with realistic features such as gaps and 'smile' cutouts were characterized using fast-response pressure-sensitive paint at M = 0.33 for several window viewing angles. Various statistical properties of pressure fields were computed, and geometry effects on the unsteady pressure fields were analyzed and discussed. Proper orthogonal decomposition was also used to extract dominant pressure modes and corresponding temporal coefficients and to analyze and compare instantaneous pressure structures for different turret geometric features and the window viewing angles. An unsteady separation off the turret and a recirculation region downstream of the turret were identified as dominant sources of the unsteady pressure. It was found that while all geometric features affected the unsteady pressure field, the 'smiles,' positioned spanwise-symmetrically on both sides of the turret, were the leading cause of these changes, followed by the looking forward flat window. The gaps, the side- and the back-looking flat window introduced only small local changes. [ABSTRACT FROM AUTHOR] AB - Copyright of Experiments in Fluids is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UNSTEADY flow (Fluid dynamics) KW - TURRETS KW - PRESSURE-sensitive paint KW - DECOMPOSITION (Mathematics) KW - REAL-time computing N1 - Accession Number: 93922630; Gordeyev, Stanislav 1; Email Address: sgordeye@nd.edu Lucca, Nicholas 1 Jumper, Eric 1 Hird, Kyle 2 Juliano, Thomas 2 Gregory, James 2 Thordahl, James 3 Wittich, Donald 3; Affiliation: 1: University of Notre Dame, Notre Dame 46545 USA 2: The Ohio State University, Columbus 43235 USA 3: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB 87117 USA; Source Info: Jan2014, Vol. 55 Issue 1, p1; Subject Term: UNSTEADY flow (Fluid dynamics); Subject Term: TURRETS; Subject Term: PRESSURE-sensitive paint; Subject Term: DECOMPOSITION (Mathematics); Subject Term: REAL-time computing; Number of Pages: 20p; Document Type: Article L3 - 10.1007/s00348-013-1661-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93922630&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haverluk, Terrence W. AU - Beauchemin, Kevin M. AU - Mueller, Brandon A. T1 - The Three Critical Flaws of Critical Geopolitics: Towards a Neo-Classical Geopolitics. JO - Geopolitics JF - Geopolitics Y1 - 2014/01//Jan-Mar2014 VL - 19 IS - 1 M3 - Article SP - 19 EP - 39 PB - Routledge SN - 14650045 AB - Critical geopolitics is the dominant school of geopolitics in contemporary geography. Critical geopolitics is a body of radical scholarship that emerged in the 1980s that attempts to move beyond classic geopolitics. In order to resuscitate geopolitics, critical geopoliticians had to distance themselves from the imperialist, racist, and environmentally determinist geopolitics of the 1940s. In doing so, however, critical geopoliticians created a body of scholarship that omits important explanatory variables necessary to understand post–Cold War geopolitics. We argue that critical geopolitics unnecessarily limits the wider application of geopolitics because it is: 1) anti-geopolitics; 2) anti-cartographic; and 3) anti-environmental. [ABSTRACT FROM AUTHOR] AB - Copyright of Geopolitics is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GEOPOLITICS KW - BOUNDARIES KW - POLITICAL science KW - INTERNATIONAL conflict KW - RACISM N1 - Accession Number: 94643820; Haverluk, Terrence W. 1; Email Address: terrence.haverluk@usafa.edu Beauchemin, Kevin M. 1 Mueller, Brandon A. 1; Affiliation: 1: Academy Scholars Program, United States Air Force Academy, USAFA, CO, USA; Source Info: Jan-Mar2014, Vol. 19 Issue 1, p19; Subject Term: GEOPOLITICS; Subject Term: BOUNDARIES; Subject Term: POLITICAL science; Subject Term: INTERNATIONAL conflict; Subject Term: RACISM; Number of Pages: 21p; Illustrations: 1 Color Photograph, 3 Maps; Document Type: Article L3 - 10.1080/14650045.2013.803192 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94643820&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cao, Siyang AU - Zheng, Yuan F. AU - Ewing, Robert L. T1 - Wavelet-Based Waveform for Effective Sidelobe Suppression in Radar Signal. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2014/01// VL - 50 IS - 1 M3 - Article SP - 265 EP - 284 SN - 00189251 AB - A new radar waveform based on wavelets is proposed. The waveform shows significant advantages over conventional linear frequency modulated (LFM) and Costas waveforms for effective sidelobe suppression. Another benefit comes from the wavelet packets, each of which occupies a subband in the frequency domain. Subband adaptation of the waveform in both magnitude and phase becomes flexible, responding to varying target and environmental conditions. The latter facilitates the development of powerful cognitive radars. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVE analysis KW - RADAR signal processing KW - WAVELET transforms KW - RADIO frequency modulation KW - DOPPLER effect KW - FILTER banks N1 - Accession Number: 95894585; Cao, Siyang 1 Zheng, Yuan F. 1 Ewing, Robert L. 2; Affiliation: 1: The Ohio State University, Columbus, OH 43210 2: Air Force Research Laboratory, Dayton, OH 45433; Source Info: Jan2014, Vol. 50 Issue 1, p265; Subject Term: WAVE analysis; Subject Term: RADAR signal processing; Subject Term: WAVELET transforms; Subject Term: RADIO frequency modulation; Subject Term: DOPPLER effect; Subject Term: FILTER banks; Number of Pages: 20p; Document Type: Article L3 - 10.1109/TAES.2013.120067 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95894585&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kang, Bosung AU - Monga, Vishal AU - Rangaswamy, Muralidhar T1 - Rank-Constrained Maximum Likelihood Estimation of Structured Covariance Matrices. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2014/01// VL - 50 IS - 1 M3 - Article SP - 501 EP - 515 SN - 00189251 AB - This paper develops and analyzes the performance of a structured covariance matrix estimate for the important practical problem of radar space-time adaptive processing in the face of severely limited training data. Traditional maximum likelihood (ML) estimators are effective when training data are abundant, but they lead to poor estimates, degraded false alarm rates, and detection loss in the realistic regime of limited training. The problem is exacerbated by recent advances, which have led to high-dimensionalof the observations arising from increased antenna elements, as well as higher temporal resolution (time epochs and finally=). This work addresses the problem by incorporating constraints in the ML estimation problem obtained from the geometry and physics of the airborne phased array radar scenario. In particular, we exploit the structure of the disturbance covariance and, importantly, knowledge of the clutter rank to derive a new rank-constrained maximum likelihood (RCML) estimator of clutter and disturbance covariance. We demonstrate that despite the presence of the challenging rank constraint, the estimation can be transformed to a convex problem and derive closed-form expressions for the estimated covariance matrix. Performance analysis using the knowledge-aided sensor signal processing and expert reasoning data set (where ground truth covariance is made available) shows that the proposed estimator outperforms state-of-the-art alternatives in the sense of a higher normalized signal-to-interference and noise ratio. Crucially, the RCML estimator excels for low training, including the notoriously difficult regime of K≤N training samples. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAXIMUM likelihood statistics KW - COVARIANCE matrices KW - RADAR signal processing KW - SPACE-time adaptive signal processing KW - ANTENNAS (Electronics) KW - SIGNAL-to-noise ratio N1 - Accession Number: 95894601; Kang, Bosung 1 Monga, Vishal 1 Rangaswamy, Muralidhar 2; Affiliation: 1: The Pennsylvania State University, University Park, PA 16802 2: Air Force Research Laboratory, OH; Source Info: Jan2014, Vol. 50 Issue 1, p501; Subject Term: MAXIMUM likelihood statistics; Subject Term: COVARIANCE matrices; Subject Term: RADAR signal processing; Subject Term: SPACE-time adaptive signal processing; Subject Term: ANTENNAS (Electronics); Subject Term: SIGNAL-to-noise ratio; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; Number of Pages: 15p; Document Type: Article L3 - 10.1109/TAES.2013.120389 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95894601&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Woodburn, David AU - Wu, Thomas AU - Zhou, Lei AU - Hu, Yang AU - Lin, Yeong-Ren AU - Chow, Louis AU - Leland, Quinn T1 - High-Performance Electromechanical Actuator Dynamic Heat Generation Modeling. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2014/01// VL - 50 IS - 1 M3 - Article SP - 530 EP - 541 SN - 00189251 AB - All-electric aircraft is a high-priority goal in the avionics community. Both increased reliability and efficiency are the promised implications of this move. But, thermal management has become a significant problem that must be resolved before reaching this goal. Electromechanical actuators (EMAs) are of special concern. Advanced analysis technologies such as the finite element method (FEM) and intelligent control systems such as field-oriented control (FOC) are being used to better understand the source of the heat and to eliminate as much of it as possible. This paper describes the nonlinear, lumped-element, integrated modeling of a permanent magnet (PM) motor used in an EMA. The parameters, including nonlinear inductance, rotor flux linkage, and thermal resistances and capacitances, are tuned using FEM models of a real, commercial actuator. The FOC scheme and the lumped-element thermal model are also described. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES KW - AVIONICS KW - FIELD orientation principle (Electrical engineering) KW - RELIABILITY (Engineering) KW - THERMAL management (Electronic packaging) KW - FINITE element method N1 - Accession Number: 95894603; Woodburn, David 1 Wu, Thomas 2 Zhou, Lei 3 Hu, Yang 2 Lin, Yeong-Ren 3 Chow, Louis 3 Leland, Quinn 4; Affiliation: 1: General Electric, Dayton, OH 2: University of Central Florida, Orlando, FL 32816 3: Air Force Research Laboratory, Orlando, FL 32816 4: Air Force Research Laboratory, OH; Source Info: Jan2014, Vol. 50 Issue 1, p530; Subject Term: AIRPLANES; Subject Term: AVIONICS; Subject Term: FIELD orientation principle (Electrical engineering); Subject Term: RELIABILITY (Engineering); Subject Term: THERMAL management (Electronic packaging); Subject Term: FINITE element method; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TAES.2013.120338 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95894603&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Rui AU - Black, Richard J. AU - Moslehi, Behzad AU - Behbahani, Alireza R. AU - Mukherjee, Biswananth T1 - Optical Control Network for Avionics Applications Using a WDM Packet Ring. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2014/01// VL - 50 IS - 1 M3 - Article SP - 637 EP - 648 SN - 00189251 AB - We propose aviation real-time adaptive ring (AVATAR) as a potential solution for the integrated communication infrastructure for future aero-engine control systems. AVATAR features an Ethernet-over-WDM (wavelength-division multiplexing) architecture. It employs reconfigurable optical add/drop multiplexer (ROADM) as node technology. Compared with existing serialized data bus, e.g., time-triggered protocol (TTP), AVATAR exploits multi-wavelength and spatial reuse properties of an optical WDM ring through sophisticated packet scheduling. To quantitatively evaluate the advantages over existing avionic networks, and to understand the architectural parameters of AVATAR, optimal scheduling methods using mixed integer linear programming (MILP), as well as a simple, near-optimal heuristic, are presented. Numerical results demonstrate the superiority of AVATAR, with a simple two-channel configuration more than doubling the capacity of TTP. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL control KW - AVIONICS KW - AIRPLANES -- Motors KW - WAVELENGTH division multiplexing KW - REAL-time control KW - COMMUNICATION infrastructure KW - COMPUTER network protocols N1 - Accession Number: 95894610; Wang, Rui 1 Black, Richard J. 2 Moslehi, Behzad 2 Behbahani, Alireza R. 3 Mukherjee, Biswananth 1; Affiliation: 1: University of California, Davis, CA 95616 2: Intelligent Fiber Optic Systems Corporation (IFOS), Santa Clara, CA 95054 3: Air Force Research Laboratory, OH 45433; Source Info: Jan2014, Vol. 50 Issue 1, p637; Subject Term: OPTICAL control; Subject Term: AVIONICS; Subject Term: AIRPLANES -- Motors; Subject Term: WAVELENGTH division multiplexing; Subject Term: REAL-time control; Subject Term: COMMUNICATION infrastructure; Subject Term: COMPUTER network protocols; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TAES.2013.110758 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95894610&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rose, Mark R. AU - Barron, Laura G. AU - Carretta, Thomas R. AU - Arnold, Richard D. AU - Howse, William R. T1 - Early Identification of Unmanned Aircraft Pilots Using Measures of Personality and Aptitude. JO - International Journal of Aviation Psychology JF - International Journal of Aviation Psychology Y1 - 2014/01//Jan-Mar2014 VL - 24 IS - 1 M3 - Article SP - 36 EP - 52 PB - Taylor & Francis Ltd SN - 10508414 AB - This study evaluated the extent to which personality measures (Self-Description Inventory+) could improve prediction of remotely piloted aircraft (RPA) training outcomes, beyond currently used cognitive, psychomotor, and aviation knowledge and experience predictors included in the U.S. Air Force (USAF) Pilot Candidate Selection Method 2.0. Participants were 170 USAF officers with RPA Initial Flight Screening (RFS) outcomes and 110 USAF officers with RPA Instrument Qualification (RIQ) outcomes. Both RFS and RIQ emphasize development of skills traditionally required for manned aircraft pilots, also considered essential for USAF RPA pilots. Results showed significant negative relationships between the Big Five personality trait of Openness and several RPA training outcomes, and significant incremental variance explained by Openness beyond other predictors. Additionally, RFS and RIQ training outcomes were generally predicted by measures traditionally used for selection into manned aircraft pilot training courses and careers. Together, these findings suggest that personality, specifically Openness scores, and scores on traditional pilot selection measures, can serve as useful indicators in the early identification of RPA pilot talent. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aviation Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIR pilots KW - PERSONALITY KW - ABILITY KW - MOTOR ability testing KW - AVIATION psychology KW - PSYCHOMOTOR disorders KW - UNITED States. Air Force Reserve N1 - Accession Number: 93469349; Rose, Mark R. 1; Email Address: Mark.Rose.7@US.AF.Mil Barron, Laura G. 1 Carretta, Thomas R. 2 Arnold, Richard D. 3 Howse, William R. 4; Affiliation: 1: Air Force Personnel Center, Randolph Air Force Base, Texas, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, USA 3: Naval Medical Research Unit–Dayton, Wright-Patterson Air Force Base, Ohio, USA 4: Damos Aviation Services, Gurnee, Illinois, USA; Source Info: Jan-Mar2014, Vol. 24 Issue 1, p36; Subject Term: AIR pilots; Subject Term: PERSONALITY; Subject Term: ABILITY; Subject Term: MOTOR ability testing; Subject Term: AVIATION psychology; Subject Term: PSYCHOMOTOR disorders; Company/Entity: UNITED States. Air Force Reserve; Number of Pages: 17p; Document Type: Article L3 - 10.1080/10508414.2014.860849 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93469349&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hu, Xin AU - Patnaik, Soumya S. T1 - Modeling phase change material in micro-foam under constant temperature condition. JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2014/01// VL - 68 M3 - Article SP - 677 EP - 682 SN - 00179310 AB - Abstract: Heat transfer of phase change material (PCM) in an open cell micro-foam structure was numerically studied. A high constant temperature was specified at the top surface of the structure. Each unit of the micro-foam is a body-centered-cubic (BCC) lattice embedded with spherical micro-pores. Two different simulation methodologies were applied. One is the high-fidelity direct numerical simulation (DNS), which allows for the effective thermo-physical parameters to be derived. The other methodology is a volume-averaged simulation based on one- and two-temperature models. Our results show that the volume-averaged simulation can accurately and efficiently capture the phase change process in PCM/micro-foam systems, with the effective thermal conductivity derived from direct simulations and expressed as a power law of porosity. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHASE change materials KW - FOAM KW - HEAT transfer -- Mathematical models KW - TEMPERATURE measurements KW - BODY-centered cubic metals KW - POROSITY KW - Direct numerical simulation KW - Micro-foam structure KW - Phase change material KW - Volume-averaged simulation N1 - Accession Number: 91973269; Hu, Xin 1,2; Email Address: xin.hu.ctr@wpafb.af.mil Patnaik, Soumya S. 2; Email Address: soumya.patnaik.1@us.af.mil; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432-1894, USA 2: Aerospace Systems Directorate, Air Force Research Laboratory, Dayton, OH 45433-7251, USA; Source Info: Jan2014, Vol. 68, p677; Subject Term: PHASE change materials; Subject Term: FOAM; Subject Term: HEAT transfer -- Mathematical models; Subject Term: TEMPERATURE measurements; Subject Term: BODY-centered cubic metals; Subject Term: POROSITY; Author-Supplied Keyword: Direct numerical simulation; Author-Supplied Keyword: Micro-foam structure; Author-Supplied Keyword: Phase change material; Author-Supplied Keyword: Volume-averaged simulation; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2013.09.054 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91973269&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Horgan, Casey AU - Herzinger, Kurt T1 - A further investigation of using Theon’s ladder to find roots of quadratic equations. JO - International Journal of Mathematical Education in Science & Technology JF - International Journal of Mathematical Education in Science & Technology Y1 - 2014/01// VL - 45 IS - 1 M3 - Article SP - 150 EP - 158 SN - 0020739X AB - Theon’s ladder is an ancient method for easily approximatingroots of a real numberk. We extend previous work in this area by analysing a modification of this method for approximating roots of polynomials of the formx2+cx+d. In particular, we will focus on establishing to which root the ladder will converge. We use techniques from real analysis such as monotone sequences and continuity of rational functions to prove the main results. [ABSTRACT FROM PUBLISHER] AB - Copyright of International Journal of Mathematical Education in Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ROOTS of equations KW - RECURSION theory KW - POLYNOMIALS KW - SEQUENCES (Mathematics) KW - QUADRATIC equations KW - MATHEMATICS -- Problems, exercises, etc. KW - bounded sequences KW - converging sequences KW - polynomials KW - recursion KW - root finding N1 - Accession Number: 92983067; Horgan, Casey 1 Herzinger, Kurt 1; Affiliation: 1: Department of Mathematical Sciences, United States Air Force Academy (USAF Academy), 2354 Fairchild Dr Suite 6D124,CO80840-6252, USA; Source Info: Jan2014, Vol. 45 Issue 1, p150; Subject Term: ROOTS of equations; Subject Term: RECURSION theory; Subject Term: POLYNOMIALS; Subject Term: SEQUENCES (Mathematics); Subject Term: QUADRATIC equations; Subject Term: MATHEMATICS -- Problems, exercises, etc.; Author-Supplied Keyword: bounded sequences; Author-Supplied Keyword: converging sequences; Author-Supplied Keyword: polynomials; Author-Supplied Keyword: recursion; Author-Supplied Keyword: root finding; Number of Pages: 9p; Document Type: Article L3 - 10.1080/0020739X.2013.822579 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92983067&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hee Jung Shin AU - Narayanan, Ram M. AU - Rangaswamy, Muralidhar T1 - Ultrawideband Noise Radar Imaging of Impenetrable Cylindrical Objects Using Diffraction Tomography. JO - International Journal of Microwave Science & Technology JF - International Journal of Microwave Science & Technology Y1 - 2014/01// M3 - Article SP - 1 EP - 22 SN - 16875826 AB - Ultrawideband (UWB) waveforms achieve excellent spatial resolution for better characterization of targets in tomographic imaging applications compared to narrowband waveforms. In this paper, two-dimensional tomographic images of multiple scattering objects are successfully obtained using the diffraction tomography approach by transmitting multiple independent and identically distributed (iid)UWBrandomnoise waveforms. The feasibility of using a randomnoise waveformfor tomography is investigated by formulating a white Gaussian noise (WGN) model using spectral estimation. The analytical formulation of object image formation using random noise waveforms is established based on the backward scattering, and several numerical diffraction tomography simulations are performed in the spatial frequency domain to validate the analytical results by reconstructing the tomographic images of scattering objects. The final image of the object based on multiple transmitted noise waveforms is reconstructed by averaging individually formed images which compares very well with the image created using the traditional Gaussian pulse. Pixel difference-based measure is used to analyze and estimate the image quality of the final reconstructed tomographic image under various signal-to-noise ratio (SNR) conditions. Also, preliminary experiment setup andmeasurement results are presented to assess the validation of simulation results. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Microwave Science & Technology is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRA-wideband devices KW - RADAR KW - OPTICAL diffraction KW - TOMOGRAPHY KW - COMPARATIVE studies N1 - Accession Number: 100459912; Hee Jung Shin 1 Narayanan, Ram M. 1; Email Address: ram@ee.psu.edu Rangaswamy, Muralidhar 2; Affiliation: 1: Pennsylvania State University, University Park, PA 16802, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: 2014, p1; Subject Term: ULTRA-wideband devices; Subject Term: RADAR; Subject Term: OPTICAL diffraction; Subject Term: TOMOGRAPHY; Subject Term: COMPARATIVE studies; Number of Pages: 22p; Document Type: Article L3 - 10.1155/2014/601659 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100459912&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lamorte, Nicolas AU - Friedmann, Peretz P. AU - Glaz, Bryan AU - Culler, Adam J. AU - Crowell, Andrew R. AU - McNamara, Jack J. T1 - Uncertainty Propagation in Hypersonic Aerothermoelastic Analysis. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2014/01//Jan/Feb2014 VL - 51 IS - 1 M3 - Article SP - 192 EP - 203 SN - 00218669 AB - A framework for uncertainty propagation in hypersonic aeroelastic and aerothermoelastic analyses is presented. First, the aeroelastic stability of a typical section representative of a control surface on a hypersonic vehicle is examined. Variability in the uncoupled natural frequencies of the system is modeled using beta probability distributions. Uncertainty in the flutter Mach number is computed using stochastic collocation. Next, the stability of an aerodynamically heated panel representing a component of the skin of a hypersonic vehicle is considered. In this case, uncertainty is due to the location of transition from laminar to turbulent flow and the heat flux prediction. The effect of propagating these uncertainties on vehicle behavior is determined. For both cases, uncertainty is treated using stochastic collocation, which is a new and effective approach for incorporating uncertainty in this class of problems. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - RESEARCH KW - HYPERSONIC aerodynamics KW - HYPERSONIC planes KW - MACH number KW - LAMINAR flow KW - TURBULENT flow N1 - Accession Number: 94901892; Lamorte, Nicolas 1,2 Friedmann, Peretz P. 3,4 Glaz, Bryan 5,6,7 Culler, Adam J. 8,9,10 Crowell, Andrew R. 2,8 McNamara, Jack J. 7,11; Affiliation: 1: Department of Aerospace Engineering, University of Michigan, Ann Arbor, Michigan 48109-2140 2: AIAA 3: Francois-Xavier Bagnoud Professor, Department of Aerospace Engineering, University of Michigan, Ann Arbor, Michigan 48109-2140 4: Fellow, AIAA 5: Postdoctoral Researcher, Department of Aerospace Engineering, University of Michigan, Ann Arbor, Michigan 48109-2140 6: Research Aerospace Engineer, Vehicle Technology Directorate, U.S. Army Research Laboratory, Aberdeen Proving Ground, Maryland 21005 7: Senior Member, AIAA 8: Department of Aerospace Engineering, Ohio State University, Columbus, Ohio 43210-1226 9: Program Manager, Sierra Lobo, Inc., U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 10: Member, AIAA 11: Associate Professor, Department of Aerospace Engineering, Ohio State University, Columbus, Ohio 43210-1226; Source Info: Jan/Feb2014, Vol. 51 Issue 1, p192; Subject Term: AEROELASTICITY; Subject Term: RESEARCH; Subject Term: HYPERSONIC aerodynamics; Subject Term: HYPERSONIC planes; Subject Term: MACH number; Subject Term: LAMINAR flow; Subject Term: TURBULENT flow; Number of Pages: 12p; Document Type: Article L3 - 10.2514/1.C032233 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94901892&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Singh, Kumar V. AU - McDonough, Laura A. AU - Kolonay, Raymond AU - Coopers, Jonathan E. T1 - Receptance-Based Active Aeroelastic Control Using Multiple Control Surfaces. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2014/01//Jan/Feb2014 VL - 51 IS - 1 M3 - Article SP - 335 EP - 342 SN - 00218669 AB - The article discusses a study which developed a multiple-input state and output feedback control strategy associated with wings that have multiple control surfaces based on the method of receptances. An aeroelastic model for a flexible wing and feedback control schemes are formulated for increasing flutter velocities by pole placement. It is noted that the control gains are dependent upon the open-loop transfer functions. KW - FEEDBACK control systems KW - RESEARCH KW - AIRPLANE wings KW - AEROELASTICITY KW - AERODYNAMICS -- Research KW - FLUTTER (Aerodynamics) N1 - Accession Number: 94901907; Singh, Kumar V. 1,2 McDonough, Laura A. 3,4 Kolonay, Raymond 5,6 Coopers, Jonathan E. 6,7; Affiliation: 1: Assistant Professor, Department of Mechanical and Manufacturing Engineering, Miami University, Oxford, Ohio 45056 2: Senior Member, AIAA 3: Miami University, Oxford, Ohio 45056 4: Member, AIAA 5: Director, Multidisciplinary Science and Technology Center, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 6: Associate Fellow, AIAA 7: Royal Academy of Engineering Airbus Sir George White Chair in Aerospace Engineering, University of Bristol, Bristol, England BS8 1TR, United Kingdom; Source Info: Jan/Feb2014, Vol. 51 Issue 1, p335; Subject Term: FEEDBACK control systems; Subject Term: RESEARCH; Subject Term: AIRPLANE wings; Subject Term: AEROELASTICITY; Subject Term: AERODYNAMICS -- Research; Subject Term: FLUTTER (Aerodynamics); NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.2514/1.C032183 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94901907&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wigle, Jeffrey C. AU - Holwitt, Eric A. AU - Estlack, Larry E. AU - Noojin, Gary D. AU - Saunders, Katharine E. AU - Yakovlev, Valdislav V. AU - Rockwell, Benjamin A. T1 - No effect of femtosecond laser pulses on M13, E. coli, DNA, or protein. JO - Journal of Biomedical Optics JF - Journal of Biomedical Optics Y1 - 2014/01// VL - 19 IS - 1 M3 - Article SP - 1 EP - 12 SN - 10833668 AB - Data showing what appears to be nonthermal inactivation of M13 bacteriophage (M13), Tobacco mosaic virus, Escherichia coli (E. coli), and Jurkatt T-cells following exposure to 80-fs pulses of laser radiation have been published. Interest in the mechanism led to attempts to reproduce the results for M13 and E. coli. Bacteriophage plaque-forming and bacteria colony-forming assays showed no inactivation of the microorganisms; therefore, model systems were used to see what, if any, damage might be occurring to biologically important molecules. Purified plasmid DNA (pUC19) and bovine serum albumin were exposed to and analyzed by agarose gel electrophoresis (AGE) and polyacrylamide gel electrophoresis (PAGE), respectively, and no effect was found. DNA and coat proteins extracted from laser-exposed M13 and analyzed by AGE or PAGE found no effect. Raman scattering by M13 in phosphate buffered saline was measured to determine if there was any physical interaction between M13 and femtosecond laser pulses, and none was found. Positive controls for the endpoints measured produced the expected results with the relevant assays. Using the published methods, we were unable to reproduce the inactivation results or to show any interaction between ultrashort laser pulses and buffer/water, DNA, protein, M13 bacteriophage, or E. coli. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Biomedical Optics is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TOBACCO mosaic virus KW - RESEARCH KW - ESCHERICHIA coli KW - BACTERIOPHAGE mu KW - T cells KW - LASER beams -- Research KW - POLYACRYLAMIDE KW - bacteria KW - bacteriophage KW - DNA KW - femtosecond pulse KW - laser KW - near-infrared KW - protein KW - viability N1 - Accession Number: 94830104; Wigle, Jeffrey C. 1; Email Address: jeffrey.c.wigle.civ@mail.mil Holwitt, Eric A. 2,3 Estlack, Larry E. 4 Noojin, Gary D. 5 Saunders, Katharine E. 1 Yakovlev, Valdislav V. 6,7 Rockwell, Benjamin A. 1; Affiliation: 1: Human Effectiveness Directorate, Bioeffects Division, Optical Radiation Bioeffects Branch, 711th Human Performance Wing, 4141 Petroleum Road, JBSA Fort Sam Houston, Texas 78234-2644 2: Human Effectiveness Directorate, Bioeffects Division, Molecular Bioeffects Branch, 711th Human Performance Wing, Wright-Patterson AFB, Ohio 45433-5707 3: Department of Chemistry, United States Air Force Academy, Colorado Springs, Colorado 80840-6230 4: Conceptual MindWorks Inc., 9830 Colonnade Boulevard, San Antonio, Texas 78230 5: TASC Inc., 4241 Woodcock Drive, Suite B100, San Antonio, Texas 78228 6: University of Wisconsin-Milwaukee, Department of Physics, P. O. Box 413, Milwaukee, Wisconsin 53201 7: Texas A&M University, Department of Biomedical Engineering, 5045 Emerging Technologies Building, 3120 TAMU, College Station, Texas 77843-3120; Source Info: Jan2014, Vol. 19 Issue 1, p1; Subject Term: TOBACCO mosaic virus; Subject Term: RESEARCH; Subject Term: ESCHERICHIA coli; Subject Term: BACTERIOPHAGE mu; Subject Term: T cells; Subject Term: LASER beams -- Research; Subject Term: POLYACRYLAMIDE; Author-Supplied Keyword: bacteria; Author-Supplied Keyword: bacteriophage; Author-Supplied Keyword: DNA; Author-Supplied Keyword: femtosecond pulse; Author-Supplied Keyword: laser; Author-Supplied Keyword: near-infrared; Author-Supplied Keyword: protein; Author-Supplied Keyword: viability; Number of Pages: 12p; Document Type: Article L3 - 10.1117/1.JBO.19.1.015008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94830104&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maves, Ryan C. AU - Tripp, Michael S. AU - Dell, Trevor G. AU - Bennett, Jason W. AU - Ahluwalia, Jaspal S. AU - Tamminga, Cindy AU - Baldwin, James C. AU - Starr, Clarise Rivera AU - Grinkemeyer, Michael D. AU - Dempsey, Michael P. T1 - Disseminated vaccine-strain varicella as initial presentation of the acquired immunodeficiency syndrome: A case report and review of the literature. JO - Journal of Clinical Virology JF - Journal of Clinical Virology Y1 - 2014/01// VL - 59 IS - 1 M3 - Article SP - 63 EP - 66 SN - 13866532 AB - Abstract: Varicella-zoster virus (VZV) infections have declined in many industrialized countries due to vaccination with the attenuated Oka strain virus. Rare cases of severe, disseminated vaccine-strain VZV infection have occurred in the immunocompromised, although rarely in HIV-infected persons. We describe a man with previously-undiagnosed human immunodeficiency virus (HIV) infection who received VZV vaccination and subsequently presented to a combat hospital in Afghanistan with disseminated varicella, respiratory failure, and sepsis. The patient recovered with ventilator and hemodynamic support, intravenous acyclovir, and empiric antibiotic therapy. DNA sequencing detected Oka strain virus from patient blood specimens. Although safe in most populations, the VZV vaccine may cause life-threatening disease in immunocompromised patients. Improved detection of HIV infection may be useful in preventing such cases. [Copyright &y& Elsevier] AB - Copyright of Journal of Clinical Virology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VARICELLA-zoster virus KW - IMMUNOLOGICAL deficiency syndromes KW - MEDICAL literature -- Reviews KW - VACCINATION KW - IMMUNOCOMPROMISED patients KW - ANTIBIOTICS -- Therapeutic use KW - DEVELOPED countries KW - AIDS KW - HIV-1 KW - Operation Enduring Freedom KW - Varicella KW - Varicella vaccine N1 - Accession Number: 93585748; Maves, Ryan C. 1,2,3; Email Address: ryan.maves@med.navy.mil Tripp, Michael S. 1,3 Dell, Trevor G. 4 Bennett, Jason W. 4,5 Ahluwalia, Jaspal S. 4,6 Tamminga, Cindy 1,7 Baldwin, James C. 8 Starr, Clarise Rivera 8 Grinkemeyer, Michael D. 8 Dempsey, Michael P. 1,8; Affiliation: 1: NATO Role 3 Multi-National Medical Unit, Kandahar Airfield, Afghanistan 2: Division of Infectious Diseases, Department of Internal Medicine, Naval Medical Center San Diego, San Diego, CA, USA 3: Department of Pulmonary and Critical Care Medicine, Naval Medical Center San Diego, San Diego, CA, USA 4: 82nd Airborne Division, Fort Bragg, NC, USA 5: Military Malaria Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA 6: United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, USA 7: Naval Medical Research Center, Silver Spring, Maryland, USA 8: Applied Technology Center, United States Air Force School of Aerospace Medicine, Wright-Patterson Air Force Base, OH, USA; Source Info: Jan2014, Vol. 59 Issue 1, p63; Subject Term: VARICELLA-zoster virus; Subject Term: IMMUNOLOGICAL deficiency syndromes; Subject Term: MEDICAL literature -- Reviews; Subject Term: VACCINATION; Subject Term: IMMUNOCOMPROMISED patients; Subject Term: ANTIBIOTICS -- Therapeutic use; Subject Term: DEVELOPED countries; Author-Supplied Keyword: AIDS; Author-Supplied Keyword: HIV-1; Author-Supplied Keyword: Operation Enduring Freedom; Author-Supplied Keyword: Varicella; Author-Supplied Keyword: Varicella vaccine; NAICS/Industry Codes: 923120 Administration of Public Health Programs; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jcv.2013.10.027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93585748&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ashtiani, Reza AU - Saeed, Athar AU - Hammons, Michael T1 - Mechanistic Characterization and Performance Evaluation of Recycled Aggregate Systems. JO - Journal of Materials in Civil Engineering JF - Journal of Materials in Civil Engineering Y1 - 2014/01// VL - 26 IS - 1 M3 - Article SP - 99 EP - 106 PB - American Society of Civil Engineers SN - 08991561 AB - This paper provides a mechanistic procedure for performance characterization of recycled aggregate systems for use as aggregate base layers. Twelve recycled aggregate systems with different lithologies and known field performance histories were selected for this study. The aggregate sources were selected from seven different states with different climatic conditions to account for the environmental impacts on the performance of the pavements constructed with recycled materials. A comprehensive material testing protocol was followed to characterize the mechanical and physio-chemical properties of the recycled aggregate systems. A shear strength test at different confinement levels and the Canadian freeze-thaw test, Micro-Deval test, and tube suction test were performed on the samples. Analysis of the laboratory tests showed that several recycled systems performed equally or better compared to control systems consisting of virgin aggregates in terms of higher shear strength and higher hardening index. Laboratory test results also showed that recycled concrete (RC) materials typically had superior mechanical properties such as a higher resilient modulus and hardening index compared to recycled asphalt (RA) systems; however, RC systems showed higher frost susceptibility. The laboratory analysis and numerical simulation results presented in this study underscore the significance of climatic conditions and subgrade soil type when a RA system is considered as a viable option. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials in Civil Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MINERAL aggregates KW - ANISOTROPY KW - CRYSTALLOGRAPHY KW - WASTE products as building materials KW - MATTER -- Properties KW - PAVEMENTS KW - Aggregate base layer KW - Anisotropy KW - Geomaterials KW - Pavements KW - Recycled materials N1 - Accession Number: 92983432; Ashtiani, Reza 1; Email Address: reza@utep.edu Saeed, Athar 2 Hammons, Michael 3; Affiliation: 1: Assistant Professor, Univ. of Texas at El Paso, 500W. University Ave., Engineering Building, El Paso, TX 79968 2: Principal Engineer, Applied Research Associates, Inc., 104 Research Rd., Building 9738, Tyndall AFB, FL 32403 3: Research Engineer, Air Force Research Laboratory, 104 Research Rd., Building 9738, Tyndall AFB, FL 32403; Source Info: Jan2014, Vol. 26 Issue 1, p99; Subject Term: MINERAL aggregates; Subject Term: ANISOTROPY; Subject Term: CRYSTALLOGRAPHY; Subject Term: WASTE products as building materials; Subject Term: MATTER -- Properties; Subject Term: PAVEMENTS; Author-Supplied Keyword: Aggregate base layer; Author-Supplied Keyword: Anisotropy; Author-Supplied Keyword: Geomaterials; Author-Supplied Keyword: Pavements; Author-Supplied Keyword: Recycled materials; NAICS/Industry Codes: 237310 Highway, Street, and Bridge Construction; NAICS/Industry Codes: 238990 All Other Specialty Trade Contractors; Number of Pages: 8p; Document Type: Article L3 - 10.1061/(ASCE)MT.1943-5533.0000798 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92983432&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, James L. T1 - Killing without Heart: Limits on Robotic Warfare in an Age of Persistent Conflict. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2014/01// VL - 13 IS - 1 M3 - Book Review SP - 106 EP - 111 PB - Routledge SN - 15027570 KW - ROBOTICS KW - NONFICTION KW - RIZA, M. Shane KW - KILLING Without Heart: Limits on Robotic Warfare in an Age of Persistent Conflict (Book) N1 - Accession Number: 96067955; Cook, James L. 1; Affiliation: 1: Professor of Philosophy, US Air Force Academy, Colorado Springs, CO, USA; Source Info: 2014, Vol. 13 Issue 1, p106; Subject Term: ROBOTICS; Subject Term: NONFICTION; Reviews & Products: KILLING Without Heart: Limits on Robotic Warfare in an Age of Persistent Conflict (Book); People: RIZA, M. Shane; Number of Pages: 6p; Document Type: Book Review L3 - 10.1080/15027570.2014.910017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96067955&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, James L. T1 - Duty. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2014/01// VL - 13 IS - 1 M3 - Book Review SP - 112 EP - 115 PB - Routledge SN - 15027570 KW - CABINET officers KW - NONFICTION KW - GATES, Robert Michael, 1943- KW - DUTY (Book) N1 - Accession Number: 96067956; Cook, James L. 1; Affiliation: 1: Professor of Philosophy, US Air Force Academy, Colorado Springs, CO, USA; Source Info: 2014, Vol. 13 Issue 1, p112; Subject Term: CABINET officers; Subject Term: NONFICTION; Reviews & Products: DUTY (Book); People: GATES, Robert Michael, 1943-; Number of Pages: 4p; Document Type: Book Review L3 - 10.1080/15027570.2014.910018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=96067956&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Benson, Michael AU - Shah, Piyush AU - Marciniak, Michael AU - Sarangan, Andrew AU - Urbas, Augustine T1 - Optical Characterization of Silver Nanorod Thin Films Grown Using Oblique Angle Deposition. JO - Journal of Nanomaterials JF - Journal of Nanomaterials Y1 - 2014/01// M3 - Article SP - 1 EP - 8 SN - 16874110 AB - Nanorods aremetamaterial structures that have been shown to have wide application, ranging frombiomedical uses to photovoltaic materials. These materials have unique optical characteristics. In this paper, two silver (Ag) nanorod thin-film samples are created using Glancing Angle Deposition (GLAD) at both near-room temperature (~300K) and cryogenic temperature (~100K). Generalized ellipsometry is used to measure the optical constants of the samples. The strong difference between the optical constants of the constituent materials and those of these thin films shows that the characteristics of the samples are due to how their metamaterial structures are defined.The principle optical axes of the films align well with the morphological characteristics of the nanostructures. The axis with the greatest index of refraction remains aligned to the principle axes but shifts orientation with respect to morphological characteristics between samples. Experimental results show differences in both magnitude and characteristics of the nanorod indexes. Reflectance and transmittance measurements are performed to extract absorptance data. The roomtemperature deposited sample shows a higher overall absorptance, while the cryogenic sample shows a clear orientationdependent absorptance. Polarization data is analyzed to show that the 100K thin film exhibits polarization-dependent absorptance, while the 300K sample's absorptance has a strong orientation dependence. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nanomaterials is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILVER nanoparticles -- Optical properties KW - NANORODS KW - GLANCING angle deposition KW - THIN films KW - METAMATERIALS KW - PHOTOVOLTAIC power generation KW - ELLIPSOMETRY N1 - Accession Number: 100530767; Benson, Michael 1; Email Address: mrbenson403@gmail.com Shah, Piyush 2 Marciniak, Michael 1 Sarangan, Andrew 2 Urbas, Augustine 3; Affiliation: 1: Department of Engineering Physics, Air Force Institute of Technology,Wright-Patterson AFB, Dayton, OH 45433, USA 2: Electro-Optics Graduate Program, University of Dayton, Dayton, OH 45469, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory,Wright-Patterson AFB, Dayton, OH 45433, USA; Source Info: 2014, p1; Subject Term: SILVER nanoparticles -- Optical properties; Subject Term: NANORODS; Subject Term: GLANCING angle deposition; Subject Term: THIN films; Subject Term: METAMATERIALS; Subject Term: PHOTOVOLTAIC power generation; Subject Term: ELLIPSOMETRY; Number of Pages: 8p; Document Type: Article L3 - 10.1155/2014/694982 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100530767&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pocock, Ginger M. AU - Oliver, Jeffrey W. AU - Specht, Charles S. AU - Estep, J. Scot AU - Noojin, Gary D. AU - Schuster, Kurt AU - Rockwell, Benjamin A. T1 - High-Resolution In Vivo Imaging of Regimes of Laser Damage to the Primate Retina. JO - Journal of Ophthalmology JF - Journal of Ophthalmology Y1 - 2014/01// M3 - Article SP - 1 EP - 14 SN - 2090004X AB - Purpose. To investigate fundamental mechanisms of regimes of laser induced damage to the retina and the morphological changes associated with the damage response. Methods. Varying grades of photothermal, photochemical, and photomechanical retinal laser damage were produced in eyes of eight cynomolgus monkeys. An adaptive optics confocal scanning laser ophthalmoscope and spectral domain optical coherence tomographer were combined to simultaneously collect complementary in vivo images of retinal laser damage during and following exposure. Baseline color fundus photography was performed to complement highresolution imaging. Monkeys were perfused with 10% buffered formalin and eyes were enucleated for histological analysis. Results. Laser energies for visible retinal damage in this study were consistent with previously reported damage thresholds. Lesions were identified in OCT images that were not visible in direct ophthalmoscopic examination or fundus photos. Unique diagnostic characteristics, specific to each damage regime, were identified and associated with shape and localization of lesions to specific retinal layers. Previously undocumented retinal healing response to blue continuous wave laser exposure was recorded through a novel experimental methodology. Conclusion. This study revealed increased sensitivity of lesion detection and improved specificity to the laser of origin utilizing high-resolution imaging when compared to traditional ophthalmic imaging techniques in the retina. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Ophthalmology is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RETINA -- Wounds & injuries KW - MICROSCOPY KW - METHODOLOGY KW - BIOPHYSICS KW - LASERS KW - RESEARCH -- Methodology KW - T-test (Statistics) KW - OPTICAL coherence tomography N1 - Accession Number: 100519254; Pocock, Ginger M. 1,2; Email Address: pocockgm@gmail.com Oliver, Jeffrey W. 1 Specht, Charles S. 3 Estep, J. Scot 4 Noojin, Gary D. 5 Schuster, Kurt 5 Rockwell, Benjamin A. 1; Affiliation: 1: U.S. Air Force Research Laboratory, 711 HPW/RHDO, 4141 Petroleum Road, JBSA Fort Sam Houston, TX 78234, USA 2: Department of Biomedical Engineering, University of Texas at Austin, University Station No. C0800, Austin, TX 78712, USA 3: Penn State Hershey Anatomic Pathology, 500 University Drive, Hershey, PA 17033, USA 4: U.S. Army Veterinary Corps at Tri-Services Research Laboratory, 4141 Petroleum Road, JBSA Fort Sam Houston, TX 78234, USA 5: TASC Inc., Biomedical Sciences and Technologies Department, JBSA Fort Sam Houston, TX 78234, USA; Source Info: 2014, p1; Subject Term: RETINA -- Wounds & injuries; Subject Term: MICROSCOPY; Subject Term: METHODOLOGY; Subject Term: BIOPHYSICS; Subject Term: LASERS; Subject Term: RESEARCH -- Methodology; Subject Term: T-test (Statistics); Subject Term: OPTICAL coherence tomography; Number of Pages: 14p; Document Type: Article L3 - 10.1155/2014/516854 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100519254&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yentsch, Robert J. AU - Gaitonde, Datta V. AU - Kimmel, Roger T1 - Performance of Turbulence Modeling in Simulation of the HIFiRE-1 Flight Test. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2014/01//Jan/Feb2014 VL - 51 IS - 1 M3 - Article SP - 117 EP - 127 SN - 00224650 AB - Pressure and heat transfer data from the HIFiRE-1 flight test are employed to evaluate the performance of a k-ω turbulence model at different Mach and Reynolds numbers along the flight path. A sequence of three-dimensional structured meshes is employed to discretize the domain consisting of a cone (transition experiment) and a flare (shock- boundary layer interaction experiment) with channel cutouts (mass capture experiment). Variations in model parameters are also explored and the effects are discussed. The overall flow structure agrees with expectations and observations from earlier ground tests, including laminar-to-turbulent transition on the cone, strong shock- boundary layer interactions at the compression corner, and a complex flow in the channel. Trends in predicted surface pressure generally compare well to the flight test data, although the point of separation at the flare is upstream of observation by about 2% of body length, or 20 % of separation length in all cases. Heat transfer agreement is good except at an instance in the flight path where the heat transfer magnitude was extremely low and the experimental data exhibit scatter. At this flight condition, pressure predictions, however, are reasonable. Overall, the simulations reproduce the primary quantities of interest if care is exercised in analyzing data. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLIGHT testing KW - RESEARCH KW - TURBULENCE -- Mathematical models KW - HEAT transfer KW - REYNOLDS number KW - MACH number N1 - Accession Number: 94784889; Yentsch, Robert J. 1 Gaitonde, Datta V. 1 Kimmel, Roger 2; Affiliation: 1: Ohio State University, Columbus, Ohio 43210 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jan/Feb2014, Vol. 51 Issue 1, p117; Subject Term: FLIGHT testing; Subject Term: RESEARCH; Subject Term: TURBULENCE -- Mathematical models; Subject Term: HEAT transfer; Subject Term: REYNOLDS number; Subject Term: MACH number; Number of Pages: 11p; Document Type: Article L3 - 10.2514/1.A32535 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94784889&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gosse, Ryan AU - Kimmel, Roger AU - Johnson, Heath B. T1 - Study of Boundary-Layer Transition on Hypersonic International Flight Research Experimentation 5. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2014/01//Jan/Feb2014 VL - 51 IS - 1 M3 - Article SP - 151 EP - 162 SN - 00224650 AB - The boundary-layer transition on the Hypersonic International Flight Research Experimentation 5 flight vehicle was studied using a two-dimensional parabolized stability equation analysis. Four trajectory points were selected to cover the range of the flight in which the transition is expected to occur on the vehicle. To solve the parabolized stability equation, a mean flow solution was generated using a finite-volume Navier-Stokes solver. The stability analysis was then conducted on the leading-edge and centerline symmetry planes of the vehicle. It was found that the leading-edge planes are expected to follow second-mode instability growth. The centerline cases experienced a much more complicated growth that was mainly driven by a second mode but also showed higher growth modes. In particular, for the lowest-altitude case, the higher modes seemingly contributed to the maximum N-factor growth. This was caused by the complex boundary-layer profile that was induced by a pair of vortices along the centerline of the vehicle. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERSONIC aerodynamics KW - RESEARCH KW - STABILITY of space vehicles KW - FINITE volume method KW - NAVIER-Stokes equations KW - BOUNDARY layer (Aerodynamics) N1 - Accession Number: 94784892; Gosse, Ryan 1 Kimmel, Roger 1 Johnson, Heath B. 2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: University of Minnesota, Minneapolis, Minnesota 55455; Source Info: Jan/Feb2014, Vol. 51 Issue 1, p151; Subject Term: HYPERSONIC aerodynamics; Subject Term: RESEARCH; Subject Term: STABILITY of space vehicles; Subject Term: FINITE volume method; Subject Term: NAVIER-Stokes equations; Subject Term: BOUNDARY layer (Aerodynamics); Number of Pages: 12p; Document Type: Article L3 - 10.2514/1.A32371 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94784892&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Callaway, D. W. AU - Reeder, M. F. AU - Greendyke, R. B. AU - Gosse, R. C. T1 - Ablation Measurements and Analysis of Solid Carbon Dioxide Models at Mach 3. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2014/01//Jan/Feb2014 VL - 51 IS - 1 M3 - Article SP - 213 EP - 225 SN - 00224650 AB - Three-dimensional ablation measurements, acquired using solid carbon dioxide for the model material and carried out at Mach 3, are compared to predictions of a computational model that incorporates fluid dynamics and solid-body response. Models were formed in situ by mounting three-dimensional printed molds on a hollow sting, through which liquid carbon dioxide flowed. The blowdown wind tunnel, operating with a vacuum tank connected to its outlet, provided stagnation pressures through a wide range (6.0 to 45 psia) while maintaining a nearly constant stagnation temperature for all tests (~295 K). Three synchronized high-speed cameras captured the model recession from different angles while multiple low-power lasers projected structured arrays of dots onto the otherwise visually uniform model. Commercially available software was applied to quantify the recession data. As expected, recession rates were largest at the nose of each model and increased with stagnation pressure. A quantitative comparison of the recession rate at the stagnation point showed very good agreement between the experiment and the computational model. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABLATION (Aerothermodynamics) KW - RESEARCH KW - DRY ice KW - MACH number KW - SPACE fluid dynamics KW - SPACE vehicles -- Shielding (Heat) KW - THERMAL protective tiles (Space shuttles) N1 - Accession Number: 94784897; Callaway, D. W. 1 Reeder, M. F. 1; Email Address: mark.reeder@afit.edu Greendyke, R. B. 1; Email Address: robert.greendyke@afit.edu Gosse, R. C. 2; Email Address: ryan.gosse@wpafb.af.mil; Affiliation: 1: Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433-7765 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7531; Source Info: Jan/Feb2014, Vol. 51 Issue 1, p213; Subject Term: ABLATION (Aerothermodynamics); Subject Term: RESEARCH; Subject Term: DRY ice; Subject Term: MACH number; Subject Term: SPACE fluid dynamics; Subject Term: SPACE vehicles -- Shielding (Heat); Subject Term: THERMAL protective tiles (Space shuttles); Number of Pages: 13p; Document Type: Article L3 - 10.2514/1.A32485 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94784897&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Key, Thomas S. AU - Presley, Kayla F. AU - Hay, Randall S. AU - Boakye, Emmanuel E. T1 - Total Thermal Expansion Coefficients of the Yttrium Silicate Apatite Phase Y4.69( SiO4)3 O. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2014/01// VL - 97 IS - 1 M3 - Article SP - 28 EP - 31 PB - Wiley-Blackwell SN - 00027820 AB - The formation of the Y4.69( SiO4)3 O apatite phase was observed in compositions targeted at the yttrium monosilicate and disilicate phases. Through the use of high-temperature in situ X-ray diffraction, the lattice parameters of the phase were characterized as a function of temperature, and thermal expansion coefficients were calculated. Phase fractions were assessed as a function of sintering temperature, and the apatite phase fraction increased with temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - APATITE KW - RESEARCH KW - SILICATES KW - YTTRIUM KW - SINTERING KW - X-ray diffraction N1 - Accession Number: 93449958; Key, Thomas S. 1,2 Presley, Kayla F. 1,2 Hay, Randall S. 1 Boakye, Emmanuel E. 1,2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB 2: UES, Inc.; Source Info: Jan2014, Vol. 97 Issue 1, p28; Subject Term: APATITE; Subject Term: RESEARCH; Subject Term: SILICATES; Subject Term: YTTRIUM; Subject Term: SINTERING; Subject Term: X-ray diffraction; NAICS/Industry Codes: 212210 Iron Ore Mining; NAICS/Industry Codes: 212392 Phosphate Rock Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; Number of Pages: 4p; Illustrations: 3 Charts, 4 Graphs; Document Type: Article L3 - 10.1111/jace.12619 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93449958&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Armani, C.J. AU - Ruggles-Wrenn, M.B. AU - Hay, R.S. AU - Fair, G.E. AU - Keller, K.A. T1 - Creep of polycrystalline yttrium aluminum garnet (YAG) at elevated temperature in air and in steam. JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2014/01// VL - 589 M3 - Article SP - 125 EP - 131 SN - 09215093 AB - Abstract: Compressive creep of high-purity polycrystalline yttrium aluminum garnet (YAG, Y3Al5O12) was investigated at 1300°C and 50–200MPa in air and in steam. Compressive creep behavior of silica-doped polycrystalline YAG (Y3Al5O12–0.14wt% SiO2) was also studied. Creep specimens were microstructurally characterized by optical microscopy and TEM before and after creep. Steam slightly increased creep rates of material with grain size less than 1μm (the undoped YAG), but otherwise had little effect. The flow stress exponent was n≈1 for both SiO2-doped YAG and undoped YAG. Creep rates and microstructural observations are consistent with the Nabarro-Herring creep mechanism, with creep rate limited by lattice diffusion of yttrium cations (Y3+). Silica-doped YAG had a larger grain size of 2.41μm and lower creep rates than undoped YAG with 0.92μm grain size. However, creep rates normalized by grain size for Nabarro-Herring creep were higher in SiO2-doped YAG. Possible effects of SiO2 doping and steam on creep of YAG are discussed. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYCRYSTALS KW - YTTRIUM aluminum garnet KW - METALS -- Creep KW - EFFECT of temperature on metals KW - METALS -- Microstructure KW - MICROSCOPY KW - DOPED semiconductors KW - Creep KW - High-temperature properties KW - SiO2 doping KW - YAG N1 - Accession Number: 91867073; Armani, C.J. 1 Ruggles-Wrenn, M.B. 1; Email Address: marina.ruggles-wrenn@afit.edu Hay, R.S. 2 Fair, G.E. 2 Keller, K.A. 3; Affiliation: 1: Air Force Institute of Technology, Wright-Patterson Air Force Base, OH 45433-7765, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7817, USA 3: UES Inc., Dayton, OH 45432, USA; Source Info: Jan2014, Vol. 589, p125; Subject Term: POLYCRYSTALS; Subject Term: YTTRIUM aluminum garnet; Subject Term: METALS -- Creep; Subject Term: EFFECT of temperature on metals; Subject Term: METALS -- Microstructure; Subject Term: MICROSCOPY; Subject Term: DOPED semiconductors; Author-Supplied Keyword: Creep; Author-Supplied Keyword: High-temperature properties; Author-Supplied Keyword: SiO2 doping; Author-Supplied Keyword: YAG; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.msea.2013.09.083 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91867073&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - MACDONALD JR., PAUL A. T1 - ANALYTIC THEOLOGY: A SUMMARY, EVALUATION, AND DEFENSE. JO - Modern Theology JF - Modern Theology Y1 - 2014/01// VL - 30 IS - 1 M3 - Literary Criticism SP - 32 EP - 65 PB - Wiley-Blackwell SN - 02667177 AB - A literary criticism of the book "Analytic Theology: New Essays in the Philosophy of Theology," edited by Oliver D. Crisp and Michael C. Rea, is presented. Topics include analytic theology as an emerging method and movement in philosophy and theology. Also mentioned are the view that properly understanding analytic theology first requires revisiting and explaining the evolution of analytic philosophy and Christian philosophy as well as selective contributions to the analytic theology project. KW - ANALYTIC theology KW - ANALYTIC philosophy KW - CHRISTIAN philosophy KW - THEOLOGY KW - HISTORY & criticism KW - CRISP, Oliver D. KW - REA, Michael C., 1968- KW - ANALYTIC Theology: New Essays in the Philosophy of Theology (Book) N1 - Accession Number: 108772285; MACDONALD JR., PAUL A. 1; Affiliation: 1: Department of Philosophy, United States Air Force Academy, 2354 Fairchild Drive, Suite 1A61, USAFA, CO 80840; Source Info: Jan2014, Vol. 30 Issue 1, p32; Subject Term: ANALYTIC theology; Subject Term: ANALYTIC philosophy; Subject Term: CHRISTIAN philosophy; Subject Term: THEOLOGY; Subject Term: HISTORY & criticism; Reviews & Products: ANALYTIC Theology: New Essays in the Philosophy of Theology (Book); People: CRISP, Oliver D.; People: REA, Michael C., 1968-; Number of Pages: 34p; Document Type: Literary Criticism L3 - 10.1111/moth.12052 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108772285&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - GRABINSKI, CHRISTIN M. AU - SALAKLANG, JATUPORN AU - GARRETT, CAROL M. AU - SCHRAND, AMANDA M. AU - PETRI-FINK, ALKE AU - HOFMANN, HEINRICH AU - HUSSAIN, SABER M. T1 - MULTIFUNCTIONALIZED SPIONs FOR NUCLEAR TARGETING: CELL UPTAKE AND GENE EXPRESSION. JO - NANO JF - NANO Y1 - 2014/01// VL - 9 IS - 1 M3 - Article SP - -1 SN - 17932920 AB - Superparamagnetic iron oxide nanoparticles (SPIONs) are used in many biological applications, which necessitate intracellular targeting. Here, we investigate intracellular localization and gene expression in HeLa cells after treatment with functionalized SPIONs. Functional groups investigated included positive amino propyl silane (APS), polyethylene glycol and targeting peptides: nuclear targeting peptide (NTP) and/or cancer cell uptake promoting peptide (cRGD). Results revealed that the intracellular localization of SPIONs was strongly dependent on the surface chemistry. Nuclear targeted SPIONs functionalized with only NTP or both NTP and cRGD were mostly localized in perinuclear endosomes with a small fraction entering the nucleus. The biocompatibility of cells after treatment was also dependent on surface chemistry, where SPIONs functionalized with both NTP and cRGD exhibited a more significant reduction of cell proliferation compared to NTP or cRGD individually. Interestingly, gene expression after treatment with SPIONs was similar, regardless of the surface functionalization or intracellular localization. The results of this study showed that cellular uptake and intracellular localization predominantly depended on the surface chemistry, while gene expression exhibited a more generic response to SPION treatment. We investigated the Intracellular localization and gene expression in HeLa cells after exposure to 100 μg/mL (30 μg/cm2) of functionalized superparamagnetic iron oxide nanoparticles (SPIONs). Functional groups included amino propyl silane (APS), polyethylene glycol (PEG), and targeting peptides: nuclear targeting peptide (NTP) and/or cancer cell uptake promoting peptide (cRGD). Intracellular localization predominantly depended on the surface chemistry. Nuclear-targeted SPIONs functionalized with only NTP, or both NTP and cRGD, were mostly localized in perinuclear endosomes with a small fraction entering the nucleus. Gene expression exhibited a more generic response to SPION exposure regardless of functional group. These results will help to guide nanoparticle surface functionalization for intracellular targeting applications. [ABSTRACT FROM AUTHOR] AB - Copyright of NANO is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PIONS KW - TARGETING (Nuclear strategy) KW - GENE expression KW - SUPERPARAMAGNETIC materials KW - IRON oxide nanoparticles KW - HELA cells KW - CANCER cells KW - PEPTIDES KW - gene expression KW - intracellular localization KW - peptide targeting KW - SPION N1 - Accession Number: 94628213; GRABINSKI, CHRISTIN M. 1 SALAKLANG, JATUPORN 2 GARRETT, CAROL M. 1 SCHRAND, AMANDA M. 1 PETRI-FINK, ALKE 3 HOFMANN, HEINRICH 2 HUSSAIN, SABER M. 1; Affiliation: 1: 711 HPW/RHDJ, Air Force Research Laboratory, 2729 R Street, Wright-Patterson AFB, OH, 45433, USA 2: Institute of Materials, Powder Technology Laboratory, EPFL, Station 12, CH 1015 Lausanne, Switzerland 3: Adolphe Merkle Institute, BioNanomaterials Group, University of Fribourg, CH-1723 Marly 1, Switzerland; Source Info: Jan2014, Vol. 9 Issue 1, p-1; Subject Term: PIONS; Subject Term: TARGETING (Nuclear strategy); Subject Term: GENE expression; Subject Term: SUPERPARAMAGNETIC materials; Subject Term: IRON oxide nanoparticles; Subject Term: HELA cells; Subject Term: CANCER cells; Subject Term: PEPTIDES; Author-Supplied Keyword: gene expression; Author-Supplied Keyword: intracellular localization; Author-Supplied Keyword: peptide targeting; Author-Supplied Keyword: SPION; Number of Pages: 39p; Document Type: Article L3 - 10.1142/S179329201450009X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94628213&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Clark, Michael D. AU - Jespersen, Michael L. AU - Patel, Romesh J. AU - Leever, Benjamin J. T1 - Ultra-thin alumina layer encapsulation of bulk heterojunction organic photovoltaics for enhanced device lifetime. JO - Organic Electronics JF - Organic Electronics Y1 - 2014/01// VL - 15 IS - 1 M3 - Article SP - 1 EP - 8 SN - 15661199 AB - Highlights: [•] ALD recipe effects on OPV functionality and device lifetime quantitatively evaluated. [•] AlO x deposition on OPV surfaces proceeds by a 3D nucleation and growth mechanism. [•] Ultra-thin AlO x layers extend lifetimes up to 3months without sacrificing device performance. [•] Ultimate device failure caused by hydrolysis-induced delamination at AlO x interface. [ABSTRACT FROM AUTHOR] AB - Copyright of Organic Electronics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM oxide KW - MICROENCAPSULATION KW - BULK solids KW - HETEROJUNCTIONS KW - ORGANIC electronics KW - PHOTOVOLTAIC cells KW - NUCLEATION KW - QUANTITATIVE chemical analysis KW - ATOMIC layer deposition KW - Atomic layer deposition KW - Device lifetime KW - Encapsulation coating KW - Organic photovoltaic N1 - Accession Number: 93267437; Clark, Michael D. 1,2 Jespersen, Michael L. 3 Patel, Romesh J. 1,2 Leever, Benjamin J. 1; Email Address: Benjamin.Leever@us.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, United States 2: UES Inc., 4401 Dayton-Xenia Rd., Dayton, OH 45432, United States 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, United States; Source Info: Jan2014, Vol. 15 Issue 1, p1; Subject Term: ALUMINUM oxide; Subject Term: MICROENCAPSULATION; Subject Term: BULK solids; Subject Term: HETEROJUNCTIONS; Subject Term: ORGANIC electronics; Subject Term: PHOTOVOLTAIC cells; Subject Term: NUCLEATION; Subject Term: QUANTITATIVE chemical analysis; Subject Term: ATOMIC layer deposition; Author-Supplied Keyword: Atomic layer deposition; Author-Supplied Keyword: Device lifetime; Author-Supplied Keyword: Encapsulation coating; Author-Supplied Keyword: Organic photovoltaic; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 484232 Dry bulk materials trucking, long distance; NAICS/Industry Codes: 484222 Dry bulk materials trucking, local; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.orgel.2013.10.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93267437&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beier, Hope T. AU - Ibey, Bennett L. T1 - Experimental Comparison of the High-Speed Imaging Performance of an EM-CCD and sCMOS Camera in a Dynamic Live-Cell Imaging Test Case. JO - PLoS ONE JF - PLoS ONE Y1 - 2014/01// VL - 9 IS - 1 M3 - Article SP - 1 EP - 6 PB - Public Library of Science SN - 19326203 AB - The study of living cells may require advanced imaging techniques to track weak and rapidly changing signals. Fundamental to this need is the recent advancement in camera technology. Two camera types, specifically sCMOS and EM-CCD, promise both high signal-to-noise and high speed (>100 fps), leaving researchers with a critical decision when determining the best technology for their application. In this article, we compare two cameras using a live-cell imaging test case in which small changes in cellular fluorescence must be rapidly detected with high spatial resolution. The EM-CCD maintained an advantage of being able to acquire discernible images with a lower number of photons due to its EM-enhancement. However, if high-resolution images at speeds approaching or exceeding 1000 fps are desired, the flexibility of the full-frame imaging capabilities of sCMOS is superior. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CELLS -- Imaging KW - CCD cameras KW - CMOS image sensors KW - FLUORESCENCE KW - SIGNAL-to-noise ratio KW - BIOTECHNOLOGY KW - NEUROSCIENCES KW - Bioengineering KW - Biology KW - Biomedical engineering KW - Biotechnology KW - Calcium imaging KW - Engineering KW - Image processing KW - Neuroimaging KW - Neuroscience KW - Research Article KW - Signal processing N1 - Accession Number: 94233959; Beier, Hope T. 1; Email Address: hope.beier.1@us.af.mil Ibey, Bennett L. 1; Affiliation: 1: 1th Human Performance Wing, Bioeffects Division, Air Force Research Laboratory, Fort Sam Houston, Texas, United States of America; Source Info: Jan2014, Vol. 9 Issue 1, p1; Subject Term: CELLS -- Imaging; Subject Term: CCD cameras; Subject Term: CMOS image sensors; Subject Term: FLUORESCENCE; Subject Term: SIGNAL-to-noise ratio; Subject Term: BIOTECHNOLOGY; Subject Term: NEUROSCIENCES; Author-Supplied Keyword: Bioengineering; Author-Supplied Keyword: Biology; Author-Supplied Keyword: Biomedical engineering; Author-Supplied Keyword: Biotechnology; Author-Supplied Keyword: Calcium imaging; Author-Supplied Keyword: Engineering; Author-Supplied Keyword: Image processing; Author-Supplied Keyword: Neuroimaging; Author-Supplied Keyword: Neuroscience; Author-Supplied Keyword: Research Article; Author-Supplied Keyword: Signal processing; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 6p; Document Type: Article L3 - 10.1371/journal.pone.0084614 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94233959&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Whitworth, William C. AU - Goodwin, Donald J. AU - Racster, Laura AU - West, Kevin B. AU - Chuke, Stella O. AU - Daniels, Laura J. AU - Campbell, Brandon H. AU - Bohanon, Jamaria AU - Jaffar, Atheer T. AU - Drane, Wanzer AU - Sjoberg, Paul A. AU - Mazurek, Gerald H. T1 - Variability of the QuantiFERON®-TB Gold In-Tube Test Using Automated and Manual Methods. JO - PLoS ONE JF - PLoS ONE Y1 - 2014/01// VL - 9 IS - 1 M3 - Article SP - 1 EP - 8 PB - Public Library of Science SN - 19326203 AB - Background: The QuantiFERON®-TB Gold In-Tube test (QFT-GIT) detects Mycobacterium tuberculosis (Mtb) infection by measuring release of interferon gamma (IFN-γ) when T-cells (in heparinized whole blood) are stimulated with specific Mtb antigens. The amount of IFN-γ is determined by enzyme-linked immunosorbent assay (ELISA). Automation of the ELISA method may reduce variability. To assess the impact of ELISA automation, we compared QFT-GIT results and variability when ELISAs were performed manually and with automation. Methods: Blood was collected into two sets of QFT-GIT tubes and processed at the same time. For each set, IFN-γ was measured in automated and manual ELISAs. Variability in interpretations and IFN-γ measurements was assessed between automated (A1 vs. A2) and manual (M1 vs. M2) ELISAs. Variability in IFN-γ measurements was also assessed on separate groups stratified by the mean of the four ELISAs. Results: Subjects (N = 146) had two automated and two manual ELISAs completed. Overall, interpretations were discordant for 16 (11%) subjects. Excluding one subject with indeterminate results, 7 (4.8%) subjects had discordant automated interpretations and 10 (6.9%) subjects had discordant manual interpretations (p = 0.17). Quantitative variability was not uniform; within-subject variability was greater with higher IFN-γ measurements and with manual ELISAs. For subjects with mean TB Responses ±0.25 IU/mL of the 0.35 IU/mL cutoff, the within-subject standard deviation for two manual tests was 0.27 (CI95 = 0.22–0.37) IU/mL vs. 0.09 (CI95 = 0.07–0.12) IU/mL for two automated tests. Conclusion: QFT-GIT ELISA automation may reduce variability near the test cutoff. Methodological differences should be considered when interpreting and using IFN-γ release assays (IGRAs). [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MYCOBACTERIUM tuberculosis KW - VARIABILITY (Psychometrics) KW - ENZYME-linked immunosorbent assay KW - BIOCHEMICAL markers KW - PREVENTIVE medicine KW - IMMUNE response KW - RESPIRATORY infections KW - TREATMENT KW - Antigen processing and recognition KW - Bacterial diseases KW - Biomarker epidemiology KW - Biostatistics KW - Clinical epidemiology KW - Clinical immunology KW - Clinical laboratory sciences KW - Cytokines KW - Diagnostic medicine KW - Epidemiological methods KW - Epidemiology KW - Immune response KW - Immune system KW - Immunoassays KW - Immunologic techniques KW - Infectious disease control KW - Infectious diseases KW - Mathematics KW - Medicine KW - Mycobacterium KW - Preventive medicine KW - Public health KW - Pulmonology KW - Research Article KW - Respiratory infections KW - Statistics KW - Test evaluation KW - Tuberculosis N1 - Accession Number: 94235653; Whitworth, William C. 1; Email Address: wcw2@cdc.gov Goodwin, Donald J. 2 Racster, Laura 2 West, Kevin B. 3 Chuke, Stella O. 1,4 Daniels, Laura J. 1,5 Campbell, Brandon H. 1,4 Bohanon, Jamaria 2,5 Jaffar, Atheer T. 2,5 Drane, Wanzer 6 Sjoberg, Paul A. 7 Mazurek, Gerald H. 1; Affiliation: 1: 1 Division of Tuberculosis Elimination, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America 2: 2 Epidemiology Services Branch, United States Air Force School of Aerospace Medicine, Brooks City-Base, Texas, United States of America 3: 3 Department of Occupational Medicine/TB Prevention/Deployment Medicine, Wilford Hall Medical Center, Reid Clinic, Lackland Air Force Base, Texas, United States of America 4: 4 Northrop Grumman Information Systems Sector, Atlanta, Georgia, United States of America 5: 5 CDC Foundation, Atlanta, Georgia, United States of America 6: 6 Professor Emeritus of Biostatistics, University of South Carolina, Columbia, South Carolina, United States of America 7: 7 Epidemiology Consult Services, United States Air Force School of Aerospace Medicine, Wright-Patterson Air Force Base, Dayton, Ohio, United States of America; Source Info: Jan2014, Vol. 9 Issue 1, p1; Subject Term: MYCOBACTERIUM tuberculosis; Subject Term: VARIABILITY (Psychometrics); Subject Term: ENZYME-linked immunosorbent assay; Subject Term: BIOCHEMICAL markers; Subject Term: PREVENTIVE medicine; Subject Term: IMMUNE response; Subject Term: RESPIRATORY infections; Subject Term: TREATMENT; Author-Supplied Keyword: Antigen processing and recognition; Author-Supplied Keyword: Bacterial diseases; Author-Supplied Keyword: Biomarker epidemiology; Author-Supplied Keyword: Biostatistics; Author-Supplied Keyword: Clinical epidemiology; Author-Supplied Keyword: Clinical immunology; Author-Supplied Keyword: Clinical laboratory sciences; Author-Supplied Keyword: Cytokines; Author-Supplied Keyword: Diagnostic medicine; Author-Supplied Keyword: Epidemiological methods; Author-Supplied Keyword: Epidemiology; Author-Supplied Keyword: Immune response; Author-Supplied Keyword: Immune system; Author-Supplied Keyword: Immunoassays; Author-Supplied Keyword: Immunologic techniques; Author-Supplied Keyword: Infectious disease control; Author-Supplied Keyword: Infectious diseases; Author-Supplied Keyword: Mathematics; Author-Supplied Keyword: Medicine; Author-Supplied Keyword: Mycobacterium; Author-Supplied Keyword: Preventive medicine; Author-Supplied Keyword: Public health; Author-Supplied Keyword: Pulmonology; Author-Supplied Keyword: Research Article; Author-Supplied Keyword: Respiratory infections; Author-Supplied Keyword: Statistics; Author-Supplied Keyword: Test evaluation; Author-Supplied Keyword: Tuberculosis; Number of Pages: 8p; Document Type: Article L3 - 10.1371/journal.pone.0086721 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94235653&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - HARRINGTON, KATHLEEN T1 - Sparta: a conversation with Roxana Robinson. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2014/01// VL - 26 M3 - Interview SP - 1 EP - 13 PB - US Air Force Academy English Department SN - 10466967 AB - An interview with author Roxana Robinson is presented. Robinson discusses her novel "Sparta," her views about the American culture's behavior towards Sparta-Athens and her reasons for choosing a man to be the central character in her book. She also talks about the clarity that soldiers need before they commit to military service and the aspects of a soldier's military experiences that she considers too personal for literature. KW - WOMEN authors KW - MILITARY personnel KW - MILITARY service KW - ROBINSON, Roxana -- Interviews KW - SPARTA: A Novel (Book : Robinson) N1 - Accession Number: 102372711; HARRINGTON, KATHLEEN 1; Affiliation: 1: Associate Dean, Faculty, United States Air Force Academy; Source Info: 2014, Vol. 26, preceding p1; Subject Term: WOMEN authors; Subject Term: MILITARY personnel; Subject Term: MILITARY service; Reviews & Products: SPARTA: A Novel (Book : Robinson); People: ROBINSON, Roxana -- Interviews; Number of Pages: 14p; Document Type: Interview UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102372711&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - PIPES, CANDICE L. T1 - The Impossibility of Home. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2014/01// VL - 26 M3 - Essay SP - 1 EP - 15 PB - US Air Force Academy English Department SN - 10466967 AB - An essay about African Americans' war participation as depicted in the book "Home" by Toni Morrison is presented. It discusses Morrison's portrayal of the difficulties faced by veterans in accepting the concept of home after the war is done and the way African American veterans were treated by the U.S. public when they return from the Korean War. It also analyzes the concept of racism in Morrison's novel. KW - AFRICAN American military personnel KW - VETERANS KW - RACISM in literature KW - MORRISON, Toni, 1931- KW - HOME (Book : Morrison) N1 - Accession Number: 102372773; PIPES, CANDICE L. 1; Affiliation: 1: Head, Department of English and Fine Arts, United States Air Force Academy; Source Info: 2014, Vol. 26, p1; Subject Term: AFRICAN American military personnel; Subject Term: VETERANS; Subject Term: RACISM in literature; Reviews & Products: HOME (Book : Morrison); NAICS/Industry Codes: 923140 Administration of Veterans' Affairs; People: MORRISON, Toni, 1931-; Number of Pages: 15p; Document Type: Essay UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102372773&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - PLICHTA, KATHERINE T1 - The Most Vital Phenomena. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2014/01// VL - 26 M3 - Literary Criticism SP - 1 EP - 6 PB - US Air Force Academy English Department SN - 10466967 AB - A literary criticism of the book "A Constellation of Vital Phenomena" by Anthony Marra is presented. Topics discussed include the ways that Marra portrays the impact of the Second Chechen War war on several families, the ways that wars make it difficult for people not to succumb to moral depravity and the different ways that Marra's characters try to survive the war. KW - HISTORY KW - WAR in literature KW - WAR & families KW - CHECHNIA (Russia) KW - CIVIL War, 1994- KW - MARRA, Anthony KW - CONSTELLATION of Vital Phenomena, A (Book) N1 - Accession Number: 102372774; PLICHTA, KATHERINE 1; Affiliation: 1: Teaches, English, United States Air Force Academy, Colorado; Source Info: 2014, Vol. 26, preceding p1; Subject Term: HISTORY; Subject Term: WAR in literature; Subject Term: WAR & families; Subject Term: CHECHNIA (Russia); Subject Term: CIVIL War, 1994-; Reviews & Products: CONSTELLATION of Vital Phenomena, A (Book); People: MARRA, Anthony; Number of Pages: 7p; Document Type: Literary Criticism UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102372774&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - VARGISH, THOMAS T1 - Postmodern Authority. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2014/01// VL - 26 M3 - Essay SP - 1 EP - 28 PB - US Air Force Academy English Department SN - 10466967 AB - An essay about the values that support the exercise of authority in 21st century culture is presented. It examines how values have changed in the 21st century, the factors that influence people's decision on whether to accept an authority or not and the relationship between authority and leadership. It also analyzes the ways of translating authority into leadership. KW - VALUES (Ethics) KW - AUTHORITY KW - LEADERSHIP KW - PSYCHOLOGY KW - POLITICAL science N1 - Accession Number: 102372788; VARGISH, THOMAS 1; Affiliation: 1: Teaches, literature and flm, United States Air Force Academy; Source Info: 2014, Vol. 26, p1; Subject Term: VALUES (Ethics); Subject Term: AUTHORITY; Subject Term: LEADERSHIP; Subject Term: PSYCHOLOGY; Subject Term: POLITICAL science; Number of Pages: 28p; Document Type: Essay UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102372788&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Swain, Kristine T1 - Glorious Misadventures: Nicholai Rezanov and the Dream of a Russian America. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2014/01// VL - 26 M3 - Book Review SP - 15 EP - 18 PB - US Air Force Academy English Department SN - 10466967 KW - ADVENTURE & adventurers KW - NONFICTION KW - MATTHEWS, Owen KW - GLORIOUS Misadventures: Nikolai Rezanov & the Dream of a Russian America (Book) N1 - Accession Number: 102372723; Swain, Kristine 1; Affiliation: 1: United States Air Force Academy; Source Info: 2014, Vol. 26, p15; Subject Term: ADVENTURE & adventurers; Subject Term: NONFICTION; Reviews & Products: GLORIOUS Misadventures: Nikolai Rezanov & the Dream of a Russian America (Book); People: MATTHEWS, Owen; Number of Pages: 4p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102372723&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Crane, Mike T1 - Our Lives, Our Fortunes, and Our Sacred Honor: The Forging of American Independence, 1774-1776. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2014/01// VL - 26 M3 - Book Review SP - 19 EP - 21 PB - US Air Force Academy English Department SN - 10466967 KW - AUTONOMY (Political science) KW - NONFICTION KW - BEEMAN, Richard R. KW - OUR Lives, Our Fortunes & Our Sacred Honor: The Forging of American Independence 1774-1776 (Book) N1 - Accession Number: 102372724; Crane, Mike 1; Affiliation: 1: United States Air Force Academy; Source Info: 2014, Vol. 26, p19; Subject Term: AUTONOMY (Political science); Subject Term: NONFICTION; Reviews & Products: OUR Lives, Our Fortunes & Our Sacred Honor: The Forging of American Independence 1774-1776 (Book); People: BEEMAN, Richard R.; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102372724&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McClure, Jason T1 - Engineers of Victory: The Problem Solvers Who Turned the Tide in the Second World War. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2014/01// VL - 26 M3 - Book Review SP - 21 EP - 24 PB - US Air Force Academy English Department SN - 10466967 KW - WORLD War, 1939-1945 KW - NONFICTION KW - KENNEDY, Paul KW - ENGINEERS of Victory: The Problem Solvers Who Turned the Tide in the Second World War (Book) N1 - Accession Number: 102372725; McClure, Jason 1; Affiliation: 1: United States Air Force Academy; Source Info: 2014, Vol. 26, p21; Subject Term: WORLD War, 1939-1945; Subject Term: NONFICTION; Reviews & Products: ENGINEERS of Victory: The Problem Solvers Who Turned the Tide in the Second World War (Book); People: KENNEDY, Paul; Number of Pages: 4p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102372725&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nort, Andrea Trocha-Van T1 - The Elizabethans. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2014/01// VL - 26 M3 - Book Review SP - 25 EP - 28 PB - US Air Force Academy English Department SN - 10466967 KW - HISTORY KW - NONFICTION KW - GREAT Britain KW - ELIZABETH, 1558-1603 KW - WILSON, A. N., 1950- KW - ELIZABETHANS, The (Book : Wilson) N1 - Accession Number: 102372726; Nort, Andrea Trocha-Van 1; Affiliation: 1: United States Air Force Academy; Source Info: 2014, Vol. 26, p25; Subject Term: HISTORY; Subject Term: NONFICTION; Subject Term: GREAT Britain; Subject Term: ELIZABETH, 1558-1603; Reviews & Products: ELIZABETHANS, The (Book : Wilson); People: WILSON, A. N., 1950-; Number of Pages: 4p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=102372726&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mäthger, Lydia M. AU - Senft, Stephen L. AU - Gao, Meng AU - Karaveli, Sinan AU - Bell, George R. R. AU - Zia, Rashid AU - Kuzirian, Alan M. AU - Dennis, Patrick B. AU - Crookes-Goodson, Wendy J. AU - Naik, Rajesh R. AU - Kattawar, George W. AU - Hanlon, Roger T. T1 - Bright White Scattering from Protein Spheres in Color Changing, Flexible Cuttlefish Skin. JO - Advanced Functional Materials JF - Advanced Functional Materials Y1 - 2013/12/31/ VL - 23 IS - 32 M3 - Article SP - 3980 EP - 3989 SN - 1616301X AB - Throughout nature, elegant biophotonic structures have evolved into sophisticated arrangements of pigments and structural reflectors that manipulate light in the skin, cuticles, feathers and fur of animals. Not many spherical biophotonic structures are known and those described are often angle dependent or spectrally tuned. White light scattering by the flexible skin of cuttlefish ( Sepia officinalis) is examined and how the unique structure and composition of leucophore cells serve as physiologically passive reflectors approximating the optical properties of a broadband Lambertian surface is investigated. Leucophores are cells that contain thousands of spherical microparticles called leucosomes that consist of sulfated glycoproteins or proteoglycans and reflectin. A leucophore containing ≈12 000 leucosome microspheres is characterized three-dimensionally by electron microscopy and the average refractive index of individual leucosomes is measured by holographic microscopy to be 1.51 ± 0.02. Modeling of the ultrastructural data and spectral measurements with Lorenz-Mie theory and Monte Carlo simulations suggest that leucophore whiteness is produced by incoherent scattering based upon a randomly ordered system. These soft, compliant, glycosylated proteinacious spheres may provide a template for bio-inspired approaches to efficient light scattering in materials science and optical engineering. [ABSTRACT FROM AUTHOR] AB - Copyright of Advanced Functional Materials is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTEINS KW - SEPIA officinalis KW - CUTTLEFISH KW - GLYCOPROTEINS KW - MONTE Carlo method KW - ELECTRON microscopy KW - PROTEOGLYCANS KW - biophotonics KW - Lambertian reflectors KW - leucophores KW - reflectin KW - Sepia officinalis N1 - Accession Number: 89806704; Mäthger, Lydia M. 1 Senft, Stephen L. 1 Gao, Meng 2 Karaveli, Sinan 3 Bell, George R. R. 1 Zia, Rashid 3 Kuzirian, Alan M. 1 Dennis, Patrick B. 4 Crookes-Goodson, Wendy J. 4 Naik, Rajesh R. 4 Kattawar, George W. 2 Hanlon, Roger T. 1,5; Affiliation: 1: Marine Biological Laboratory, Program in Sensory Physiology and Behavior, Woods Hole, MA 02543, USA 2: Institute for Quantum Science and Engineering, Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA 3: School of Engineering, Brown University, Providence, RI 02912, USA 4: Soft Matter Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, 45433, USA 5: Ecology and Evolutionary Biology, Brown University, Providence, RI 02912, USA; Source Info: Dec2013, Vol. 23 Issue 32, p3980; Subject Term: PROTEINS; Subject Term: SEPIA officinalis; Subject Term: CUTTLEFISH; Subject Term: GLYCOPROTEINS; Subject Term: MONTE Carlo method; Subject Term: ELECTRON microscopy; Subject Term: PROTEOGLYCANS; Author-Supplied Keyword: biophotonics; Author-Supplied Keyword: Lambertian reflectors; Author-Supplied Keyword: leucophores; Author-Supplied Keyword: reflectin; Author-Supplied Keyword: Sepia officinalis; Number of Pages: 10p; Document Type: Article L3 - 10.1002/adfm.201203705 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89806704&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sands, Brian L. AU - Ganguly, Biswa N. T1 - Ozone generation in a kHz-pulsed He-O2 capillary dielectric barrier discharge operated in ambient air. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/12/28/ VL - 114 IS - 24 M3 - Article SP - 243301 PB - American Institute of Physics SN - 00218979 AB - The generation of reactive oxygen species using nonequilibrium atmospheric pressure plasma jet devices has been a subject of recent interest due to their ability to generate localized concentrations from a compact source. To date, such studies with plasma jet devices have primarily utilized radio-frequency excitation. In this work, we characterize ozone generation in a kHz-pulsed capillary dielectric barrier discharge configuration comprised of an active discharge plasma jet operating in ambient air that is externally grounded. The plasma jet flow gas was composed of helium with an admixture of up to 5% oxygen. A unipolar voltage pulse train with a 20 ns pulse risetime was used to drive the discharge at repetition rates between 2-25 kHz. Using UVLED absorption spectroscopy centered at 255 nm near the Hartley-band absorption peak, ozone was detected over 1 cm from the capillary axis. We observed roughly linear scaling of ozone production with increasing pulse repetition rate up to a 'turnover frequency,' beyond which ozone production steadily dropped and discharge current and 777 nm O(5P→5S°) emission sharply increased. The turnover in ozone production occurred at higher pulse frequencies with increasing flow rate and decreasing applied voltage with a common energy density of 55 mJ/cm3 supplied to the discharge. The limiting energy density and peak ozone production both increased with increasing O2 admixture. The power dissipated in the discharge was obtained from circuit current and voltage measurements using a modified parallel plate dielectric barrier discharge circuit model and the volume-averaged ozone concentration was derived from a 2D ozone absorption measurement. From these measurements, the volume-averaged efficiency of ozone production was calculated to be 23 g/kWh at conditions for peak ozone production of 41 mg/h at 11 kV applied voltage, 3% O2, 2 l/min flow rate, and 13 kHz pulse repetition rate, with 1.79 W dissipated in the discharge. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATMOSPHERIC pressure KW - RESEARCH KW - PLASMA jets KW - PLASMA devices KW - OZONE KW - DIELECTRICS -- Research N1 - Accession Number: 93390484; Sands, Brian L. 1 Ganguly, Biswa N. 2; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Rd., Dayton, Ohio 45432, 2: Air Force Research Laboratory, 1950 5th St., Wright Patterson Air Force Base, Ohio 45433,; Source Info: Dec2013, Vol. 114 Issue 24, p243301; Subject Term: ATMOSPHERIC pressure; Subject Term: RESEARCH; Subject Term: PLASMA jets; Subject Term: PLASMA devices; Subject Term: OZONE; Subject Term: DIELECTRICS -- Research; Number of Pages: 7p; Illustrations: 2 Diagrams, 7 Graphs; Document Type: Article L3 - 10.1063/1.4852455 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93390484&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jespersen, Michael L. AU - Mirau, Peter A. AU - von Meerwall, Ernst D. AU - Koerner, Hilmar AU - Vaia, Richard A. AU - Fernandes, Nikhil J. AU - Giannelis, Emmanuel P. T1 - Hierarchical Canopy Dynamics of Electrolyte-DopedNanoscale Ionic Materials. JO - Macromolecules JF - Macromolecules Y1 - 2013/12/23/ VL - 46 IS - 24 M3 - Article SP - 9669 EP - 9675 SN - 00249297 AB - Nanoscale ionic materials (NIMs)are organic–inorganic hybrids prepared from ionically functionalizednanoparticles (NP) neutralized by oligomeric polymer counterions.NIMs are designed to behave as liquids under ambient conditions inthe absence of solvent and have no volatile organic content, makingthem useful for a number of applications. We have used nuclear magneticresonance relaxation and pulsed-field gradient NMR to probe localand collective canopy dynamics in NIMs based on 18-nm silica NPs witha covalently bound anionic corona, neutralized by amine-terminatedethylene oxide/propylene oxide block copolymers. The NMR relaxationstudies show that the nanosecond-scale canopy dynamics depend on thedegree of neutralization, the canopy radius of gyration, and crowdingat the ionically modified NP surface. Two canopy populations are observedin the diffusion experiments, demonstrating that one fraction of thecanopy is bound to the NP surface on the time scale (milliseconds)of the diffusion experiment and is surrounded by a more mobile layerof canopy that is unable to access the surface due to molecular crowding.The introduction of electrolyte ions (Na+or Mg2+) screens the canopy–corona electrostatic interactions, resultingin a reduced bulk viscosity and faster canopy exchange. The magnitudeof the screening effect depends upon ion concentration and valence,providing a simple route for tuning the macroscopic properties ofNIMs. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - ELECTROLYTES KW - DOPING agents (Chemistry) KW - OLIGOMERS KW - BLOCK copolymers KW - VOLATILE organic compounds KW - NUCLEAR magnetic resonance spectroscopy N1 - Accession Number: 93464610; Jespersen, Michael L. 1 Mirau, Peter A. 1 von Meerwall, Ernst D. 1 Koerner, Hilmar 1 Vaia, Richard A. 1 Fernandes, Nikhil J. 1 Giannelis, Emmanuel P. 1; Affiliation: 1: †Materials and Manufacturing Directorate, Air Force Research Laboratory, 2941 Hobson Way, Wright-Patterson Air ForceBase, Ohio 45433, United States; Source Info: Dec2013, Vol. 46 Issue 24, p9669; Subject Term: NANOPARTICLES; Subject Term: ELECTROLYTES; Subject Term: DOPING agents (Chemistry); Subject Term: OLIGOMERS; Subject Term: BLOCK copolymers; Subject Term: VOLATILE organic compounds; Subject Term: NUCLEAR magnetic resonance spectroscopy; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93464610&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Srinivasan, Raghavan AU - McReynolds, Kevin AU - Gothard, Nicholas W. AU - Spowart, Jonathan E. T1 - Texture development during deformation processing of the n-type bismuth telluride alloy Bi2Se0.3Te2.7. JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2013/12/20/ VL - 588 M3 - Article SP - 376 EP - 387 SN - 09215093 AB - Abstract: The n-type bismuth telluride alloy Bi2Se0.3Te2.7 was subject to hot deformation under several deformation conditions, such as extrusion, sandwich rolling, and plane strain compression. The resulting crystallographic texture is found to depend on the initial texture, strain imposed during deformation, the type of deformation, and proximity to the die surface. Bismuth telluride has a trigonal crystal structure, based on a hexagonal lattice with a c/a ratio of 6.96. During rolling, the material develops a rolling fiber texture in which the [0001] is oriented perpendicular to the rolling plane and the directions are randomly oriented in the plane of rolling. This texture is typically observed in a low c/a ratio material like magnesium. Measurement of the thermoelectric transport properties indicate that n-type bismuth telluride with a rolling fiber texture can have a non-dimensional figure of merit ZT of almost 1 at room temperature. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BISMUTH alloys KW - BISMUTH telluride KW - DEFORMATIONS (Mechanics) KW - CRYSTALLOGRAPHY KW - CRYSTAL structure KW - THERMOELECTRICITY KW - METALS -- Mechanical properties KW - Bismuth telluride KW - Crystallographic texture KW - Deformation structures KW - EBSD N1 - Accession Number: 91740349; Srinivasan, Raghavan 1; Email Address: raghavan.srinivasan@wright.edu McReynolds, Kevin 1 Gothard, Nicholas W. 2 Spowart, Jonathan E. 2; Affiliation: 1: Mechanical and Materials Engineering Department, Wright State University, 3640 Col. Glenn Highway, Dayton, OH 45435, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH 45433, USA; Source Info: Dec2013, Vol. 588, p376; Subject Term: BISMUTH alloys; Subject Term: BISMUTH telluride; Subject Term: DEFORMATIONS (Mechanics); Subject Term: CRYSTALLOGRAPHY; Subject Term: CRYSTAL structure; Subject Term: THERMOELECTRICITY; Subject Term: METALS -- Mechanical properties; Author-Supplied Keyword: Bismuth telluride; Author-Supplied Keyword: Crystallographic texture; Author-Supplied Keyword: Deformation structures; Author-Supplied Keyword: EBSD; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.msea.2013.09.044 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91740349&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Yannian AU - Xue, Chenming AU - Wang, Mengfei AU - Urbas, Augustine AU - Li, Quan T1 - Photodynamic Chiral Molecular Switches with Thermal Stability: From Reflection Wavelength Tuning to Handedness Inversion of Self-Organized Helical Superstructures. JO - Angewandte Chemie International Edition JF - Angewandte Chemie International Edition Y1 - 2013/12/16/ VL - 52 IS - 51 M3 - Article SP - 13703 EP - 13707 SN - 14337851 AB - The article presents a research paper which describes a method for synthesis of three new dithienylcyclopentene compounds (S,S)-6a, (S,S)-6b, and (S,S)-6c with two axially chiral bridged binaphthyl units and different bridge lengths. It focuses on the use of these compounds as a chiral dopant for nematic liquid crystals (LCs). KW - LIQUID crystals KW - CYCLOPENTENES KW - NAPHTHYL compounds KW - DOPING agents (Chemistry) KW - CHEMICAL reactions KW - handedness inversion KW - helical structures KW - liquid crystals KW - self-organized helices KW - thermal stability N1 - Accession Number: 92999738; Li, Yannian 1 Xue, Chenming 1 Wang, Mengfei 1 Urbas, Augustine 2 Li, Quan 1; Affiliation: 1: Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, Kent, OH 44242 (USA) 2: Materials and Manufacturing Directorate, Air Force Research Laboratory WPAFB, Dayton, OH 45433 (USA); Source Info: Dec2013, Vol. 52 Issue 51, p13703; Subject Term: LIQUID crystals; Subject Term: CYCLOPENTENES; Subject Term: NAPHTHYL compounds; Subject Term: DOPING agents (Chemistry); Subject Term: CHEMICAL reactions; Author-Supplied Keyword: handedness inversion; Author-Supplied Keyword: helical structures; Author-Supplied Keyword: liquid crystals; Author-Supplied Keyword: self-organized helices; Author-Supplied Keyword: thermal stability; Number of Pages: 5p; Document Type: Article L3 - 10.1002/anie.201306396 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92999738&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kesgin, Ibrahim AU - Levin, George A. AU - Haugan, Timothy J. AU - Selvamanickam, Venkat T1 - Multifilament, copper-stabilized superconductor tapes with low alternating current loss. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/12/16/ VL - 103 IS - 25 M3 - Article SP - 252603 PB - American Institute of Physics SN - 00036951 AB - Multifilament fully stabilized second generation superconductor tapes have been fabricated with filaments widths as small as 180 μm. Each superconducting filament is copper stabilized, with copper thickness up to 30 μm, without compromising the beneficial effect of striations on magnetization AC losses. This has been accomplished by a combination of laser scribing (ablation), post-ablation oxidation, and subsequent selective electroplating of copper. Twelve millimeters wide superconductor tapes divided into 48 filaments with 10 μm thick copper stabilizer is found to meet an AC loss target of 1 W/kA/m in applied alternating magnetic field of 0.075 T at 100 Hz. This technique has a potential to be transferred to a large scale manufacturing of stabilized, low loss multifilament coated conductors. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIFILAMENTARY superconductors KW - COMPOSITE superconductors KW - ELECTRIC discharges KW - LASER ablation KW - ALTERNATING currents KW - COPPER plating N1 - Accession Number: 93303091; Kesgin, Ibrahim 1 Levin, George A. 2 Haugan, Timothy J. 3 Selvamanickam, Venkat 1; Affiliation: 1: Department of Mechanical Engineering and Texas Center for Superconductivity, University of Houston, Houston, Texas 77204, 2: Department of Physics & Space Sciences, Florida Institute of Technology, Melbourne, Florida 32901, 3: Air Force Research Laboratory, Aerospace Systems Directorate, Wright Patterson Air Force Base, Dayton, Ohio 45433,; Source Info: 12/16/2013, Vol. 103 Issue 25, p252603; Subject Term: MULTIFILAMENTARY superconductors; Subject Term: COMPOSITE superconductors; Subject Term: ELECTRIC discharges; Subject Term: LASER ablation; Subject Term: ALTERNATING currents; Subject Term: COPPER plating; Number of Pages: 3p; Illustrations: 1 Black and White Photograph, 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.4853975 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93303091&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mehta, Piyush M. AU - McLaughlin, Craig A. AU - Sutton, Eric K. T1 - Drag coefficient modeling for grace using Direct Simulation Monte Carlo. JO - Advances in Space Research JF - Advances in Space Research Y1 - 2013/12/15/ VL - 52 IS - 12 M3 - Article SP - 2035 EP - 2051 SN - 02731177 AB - Abstract: Drag coefficient is a major source of uncertainty in predicting the orbit of a satellite in low Earth orbit (LEO). Computational methods like the Test Particle Monte Carlo (TPMC) and Direct Simulation Monte Carlo (DSMC) are important tools in accurately computing physical drag coefficients. However, the methods are computationally expensive and cannot be employed real time. Therefore, modeling of the physical drag coefficient is required. This work presents a technique of developing parameterized drag coefficients models using the DSMC method. The technique is validated by developing a model for the Gravity Recovery and Climate Experiment (GRACE) satellite. Results show that drag coefficients computed using the developed model for GRACE agree to within 1% with those computed using DSMC. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DRAG coefficient KW - MONTE Carlo method KW - LOW earth orbit satellites KW - CLIMATOLOGY KW - SPACE sciences KW - DRAG (Aerodynamics) KW - Direct Simulation Monte Carlo KW - Drag coefficient KW - GRACE N1 - Accession Number: 92503198; Mehta, Piyush M. 1; Email Address: piyushmukeshmehta@gmail.com McLaughlin, Craig A. 1; Email Address: craigm@ku.edu Sutton, Eric K. 2; Email Address: Eric.Sutton@kirtland.af.mil; Affiliation: 1: Department of Aerospace Engineering, University of Kansas, Lawrence, KS 66045, United States 2: Air Force Research Laboratory, Kirtland Air Force Base, NM 87117, United States; Source Info: Dec2013, Vol. 52 Issue 12, p2035; Subject Term: DRAG coefficient; Subject Term: MONTE Carlo method; Subject Term: LOW earth orbit satellites; Subject Term: CLIMATOLOGY; Subject Term: SPACE sciences; Subject Term: DRAG (Aerodynamics); Author-Supplied Keyword: Direct Simulation Monte Carlo; Author-Supplied Keyword: Drag coefficient; Author-Supplied Keyword: GRACE; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.asr.2013.08.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92503198&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kwak, Jae AU - Grigsby, Claude C. AU - Smith, Brittany R. AU - Rizki, Mateen M. AU - Preti, George T1 - Changes in volatile compounds of human urine as it ages: Their interaction with water. JO - Journal of Chromatography B: Analytical Technologies in the Biomedical & Life Sciences JF - Journal of Chromatography B: Analytical Technologies in the Biomedical & Life Sciences Y1 - 2013/12/15/ VL - 941 M3 - Article SP - 50 EP - 53 SN - 15700232 AB - Abstract: The urinary odors are commonly perceived as unpleasant. While numerous studies have identified the volatile organic compounds (VOCs) released from urine, the odorants responsible for the urine odor are not well characterized. Furthermore, anecdotal reports suggest that the odor of aged urine is different from that of fresh urine. However, no study has yet to investigate the specific VOCs released from aged urine. In this study, we analyzed and compared the VOCs released from fresh and aged urine samples, investigating the changes in the urinary VOCs as urine aged. We found an overall decrease in concentration of many urinary VOCs, and concluded this was due to the urine evaporating as it aged. On the contrary, some highly water-soluble compounds such as short and branched-chain organic acids and trimethylamine, increased. Their increased release is most likely due to the loss of water and the subsequent release of water-soluble VOCs as urine ages. We suggest that these VOCs may contribute to the odor of the aged urine. [Copyright &y& Elsevier] AB - Copyright of Journal of Chromatography B: Analytical Technologies in the Biomedical & Life Sciences is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VOLATILE organic compounds KW - URINALYSIS KW - HYDROPHILIC compounds KW - ORGANIC acids KW - TRIMETHYLAMINE KW - ANALYTICAL chemistry KW - Gas chromatography–Mass spectrometry (GC–MS) KW - Hydration status KW - Metabolite Differentiation and Discovery Lab (MeDDL) KW - Urine KW - Volatile organic compounds (VOCs) N1 - Accession Number: 91972102; Kwak, Jae 1,2; Email Address: jae_hyock.kwak.ctr.kr@us.af.mil Grigsby, Claude C. 3 Smith, Brittany R. 1 Rizki, Mateen M. 4 Preti, George 1,5; Affiliation: 1: Monell Chemical Senses Center, 3500 Market Street, Philadelphia, PA 19104, USA 2: The Henry M. Jackson Foundation for the Advancement of Military Medicine, Air Force Research Laboratory, 711th Human Performance Wing/RHXBC, Wright-Patterson AFB, OH 45433, USA 3: Air Force Research Laboratory, 711th Human Performance Wing/RHXBC, Wright-Patterson AFB, OH 45433, USA 4: Department of Computer Science and Engineering, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH 45435, USA 5: Department of Dermatology, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Source Info: Dec2013, Vol. 941, p50; Subject Term: VOLATILE organic compounds; Subject Term: URINALYSIS; Subject Term: HYDROPHILIC compounds; Subject Term: ORGANIC acids; Subject Term: TRIMETHYLAMINE; Subject Term: ANALYTICAL chemistry; Author-Supplied Keyword: Gas chromatography–Mass spectrometry (GC–MS); Author-Supplied Keyword: Hydration status; Author-Supplied Keyword: Metabolite Differentiation and Discovery Lab (MeDDL); Author-Supplied Keyword: Urine; Author-Supplied Keyword: Volatile organic compounds (VOCs); Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jchromb.2013.09.040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91972102&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pustovit, Vitaliy N. AU - Urbas, Augustine M. AU - Shahbazyan, Tigran V. T1 - Cooperative amplification of energy transfer in plasmonic systems. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2013/12/15/ VL - 88 IS - 24 M3 - Article SP - 245427-1 EP - 245427-6 SN - 10980121 AB - We study cooperative effects in energy transfer (ET) from an ensemble of donors to an acceptor near a plasmonic nanostructure. We demonstrate that, in the cooperative regime, ET takes place from plasmonic super-radiant and subradiant states rather than from individual donors leading to a significant increase in ET efficiency. The cooperative amplification of the ET relies on the large coupling of superradiant states to external fields and on the slow decay rate of subradiant states. We show that superradiant and subradiant ET mechanisms are efficient in different energy domains and, therefore, can be utilized independently. We present numerical results demonstrating the amplification effect for a layer of donors and an acceptor on a spherical plasmonic nanoparticle. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AMPLIFICATION (Physics) KW - ENERGY transfer KW - PLASMA materials processing KW - NANOSTRUCTURED materials KW - MAGNETIC couplings N1 - Accession Number: 94240389; Pustovit, Vitaliy N. 1 Urbas, Augustine M. 1 Shahbazyan, Tigran V. 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433, USA 2: Department of Physics, Jackson State University, Jackson, Mississippi 39217, USA; Source Info: Dec2013, Vol. 88 Issue 24, p245427-1; Subject Term: AMPLIFICATION (Physics); Subject Term: ENERGY transfer; Subject Term: PLASMA materials processing; Subject Term: NANOSTRUCTURED materials; Subject Term: MAGNETIC couplings; Number of Pages: 6p; Document Type: Article L3 - 10.1103/PhysRevB.88.245427 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94240389&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davis, Matthew C. AU - Guenthner, Andrew J. AU - Sahagun, Christopher M. AU - Lamison, Kevin R. AU - Reams, Josiah T. AU - Mabry, Joseph M. T1 - Polycyanurate networks from dehydroanethole cyclotrimers: Synthesis and characterization. JO - Polymer JF - Polymer Y1 - 2013/12/13/ VL - 54 IS - 26 M3 - Article SP - 6902 EP - 6909 SN - 00323861 AB - Abstract: Novel biobased trisphenols were obtained by palladium- and cobalt-catalyzed [2 + 2 + 2] cycloaddition of dehydroanethole isomers which were readily prepared from the natural product trans-anethole. The trisphenols were transformed into their corresponding tricyanate esters and thermally cured to give polycyanurate networks. Comparison of the thermal properties, from differential scanning calorimetry, thermogravimetric and oscillatory thermomechanical analyses, of the new tricyanate esters with similar commercial products is presented. A new tricyanate ester with an acceptable processing temperature that yields a polycyanurate with very high glass transition temperature and low water absorption was found. Interestingly, the low moisture absorption was found to help limit the degradation of residual cyanate ester groups during exposure to hot water, allowing for a substantial recovery in the glass transition temperature upon subsequent heating, an unusual phenomenon for polycyanurate networks. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMER networks KW - PHENOL synthesis KW - PALLADIUM catalysts KW - COBALT catalysts KW - RING formation (Chemistry) KW - ISOMERS KW - DIFFERENTIAL scanning calorimetry KW - GLASS transition temperature KW - Cyanate ester KW - High temperature materials KW - Networks N1 - Accession Number: 92717384; Davis, Matthew C. 1; Email Address: matthew.davis@navy.mil Guenthner, Andrew J. 2; Email Address: andrew.guenthner@us.af.mil Sahagun, Christopher M. 3 Lamison, Kevin R. 4 Reams, Josiah T. 4 Mabry, Joseph M. 2; Affiliation: 1: Chemistry & Materials Division, Michelson Laboratory, Naval Air Warfare Center, China Lake, CA 93555, USA 2: Air Force Research Laboratory, Aerospace Systems Directorate Edwards AFB, CA 93524, USA 3: National Research Council/Air Force Research Laboratory, Aerospace Systems Directorate, Edwards AFB, CA 93524, USA 4: ERC Incorporated, Edwards AFB, CA 93524, USA; Source Info: Dec2013, Vol. 54 Issue 26, p6902; Subject Term: POLYMER networks; Subject Term: PHENOL synthesis; Subject Term: PALLADIUM catalysts; Subject Term: COBALT catalysts; Subject Term: RING formation (Chemistry); Subject Term: ISOMERS; Subject Term: DIFFERENTIAL scanning calorimetry; Subject Term: GLASS transition temperature; Author-Supplied Keyword: Cyanate ester; Author-Supplied Keyword: High temperature materials; Author-Supplied Keyword: Networks; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.polymer.2013.10.050 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92717384&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Matthew L. AU - Slone, Connor AU - Heitfeld, Kevin AU - Vaia, Richard A. T1 - Hydrogels: Designed Autonomic Motion in Heterogeneous Belousov-Zhabotinsky (BZ)-Gelatin Composites by Synchronicity (Adv. Funct. Mater. 22/2013). JO - Advanced Functional Materials JF - Advanced Functional Materials Y1 - 2013/12/10/ VL - 23 IS - 22 M3 - Article SP - 2786 EP - 2786 SN - 1616301X AB - The cover page of the journal "Advanced Functional Materials" is presented. KW - MATERIALS KW - HYDROGELS KW - active matter KW - actuators KW - additive manufacturing KW - hydrogels KW - oscillating reactions N1 - Accession Number: 87990775; Smith, Matthew L. 1 Slone, Connor 1 Heitfeld, Kevin 1,2 Vaia, Richard A. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: Renegade Materials Corp., 3363 South Tech Boulevard, Miamisburg, OH 45342, USA; Source Info: Dec2013, Vol. 23 Issue 22, p2786; Subject Term: MATERIALS; Subject Term: HYDROGELS; Author-Supplied Keyword: active matter; Author-Supplied Keyword: actuators; Author-Supplied Keyword: additive manufacturing; Author-Supplied Keyword: hydrogels; Author-Supplied Keyword: oscillating reactions; Number of Pages: 1p; Document Type: Article L3 - 10.1002/adfm.201370109 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87990775&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Matthew L. AU - Slone, Connor AU - Heitfeld, Kevin AU - Vaia, Richard A. T1 - Designed Autonomic Motion in Heterogeneous Belousov-Zhabotinsky (BZ)-Gelatin Composites by Synchronicity. JO - Advanced Functional Materials JF - Advanced Functional Materials Y1 - 2013/12/10/ VL - 23 IS - 22 M3 - Article SP - 2835 EP - 2842 SN - 1616301X AB - Critical technologies from medicine to defense are highly dependent on advanced composite materials. Increasingly there is a greater demand for materials with expanded functionality. The state of the art includes a wide range of responsive composites capable of impressive structural feats such as externally triggered shape morphing. Here a different composite concept is presented, one in which a portion of the constituent materials feed off of ambient energy and dynamically couple to convert it to mechanical motion in a cooperative, biomimetic fashion. Using a recently developed self-oscillating gel based on gelatin and the oscillating Belousov-Zhabotinsky (BZ) reaction, a technique is demonstrated for producing continuous patterned heterogeneous BZ hydrogel composites capable of sustained autonomic function. The coupling between two adjacent reactive patches is demonstrated in an autonomic cantilever actuator which converts chemical energy into amplified mechanical motion. The design of heterogeneous BZ gels for motion using a basic finite element model is discussed. This work represents notable progress toward developing internally responsive, bio-inspired composite materials for constructing modular autonomic morphing structures and devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Advanced Functional Materials is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BELOUSOV-Zhabotinskii reaction KW - GELATIN KW - COLLOIDS KW - MECHANICAL movements KW - COINCIDENCE KW - CANTILEVERS KW - COMPOSITE materials KW - active matter KW - actuators KW - additive manufacturing KW - hydrogels KW - oscillating reactions N1 - Accession Number: 87990767; Smith, Matthew L. 1 Slone, Connor 1 Heitfeld, Kevin 1,2 Vaia, Richard A. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: Renegade Materials Corp., 3363 South Tech Boulevard, Miamisburg, OH 45342, USA; Source Info: Dec2013, Vol. 23 Issue 22, p2835; Subject Term: BELOUSOV-Zhabotinskii reaction; Subject Term: GELATIN; Subject Term: COLLOIDS; Subject Term: MECHANICAL movements; Subject Term: COINCIDENCE; Subject Term: CANTILEVERS; Subject Term: COMPOSITE materials; Author-Supplied Keyword: active matter; Author-Supplied Keyword: actuators; Author-Supplied Keyword: additive manufacturing; Author-Supplied Keyword: hydrogels; Author-Supplied Keyword: oscillating reactions; NAICS/Industry Codes: 311990 All other food manufacturing; NAICS/Industry Codes: 311999 All Other Miscellaneous Food Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1002/adfm.201202769 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87990767&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davis, V. A. AU - Mandell, M. J. AU - Cooke, D. C. AU - Wheelock, A. AU - Mateo-Velez, J.-C. AU - Roussel, J.-F. AU - Payan, D. AU - Cho, M. AU - Koga, K. T1 - Comparison of Low Earth Orbit Wake Current Collection Simulations Using Nascap-2k, SPIS, and MUSCAT Computer Codes. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2013/12/10/Dec2013 Part 2 VL - 41 IS - 12 M3 - Article SP - 3303 EP - 3309 SN - 00933813 AB - The structure of the wake generated by an object immersed in a dense, low temperature, drifting plasma is simulated using three different spacecraft charging software tools, Nascap-2k, the Spacecraft Plasma Interaction Software (SPIS), and the Multi-Utility Spacecraft Charging Analysis Tool (MUSCAT). Each tool uses different algorithms to simulate the particle dynamics, the space charge effect on the electric field, and the currents collected by the object. The system modeled is a plate with a high negative potential on the wake side. The results from the different simulations agree with each other and with experiments conducted on the same configuration. In particular, the nontrivial shape of the collected current density map is correctly simulated by all the codes. The comparison illustrates the strengths of the various approaches. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles -- Electrostatic charging KW - LOW temperature plasmas KW - PARTICLES (Nuclear physics) KW - ELECTRIC fields KW - ANALYTICAL mechanics KW - Aerospace simulation KW - Computational modeling KW - Electric potential KW - Ions KW - Numerical models KW - plasma sheath KW - Plasmas KW - Poisson equations KW - Space vehicles KW - wake structure N1 - Accession Number: 92943634; Davis, V. A. 1 Mandell, M. J. 1 Cooke, D. C. 2 Wheelock, A. 2 Mateo-Velez, J.-C. 3 Roussel, J.-F. 3 Payan, D. 4 Cho, M. 5 Koga, K. 6; Affiliation: 1: Science Applications International Corporation, San Deigo, CA, USA 2: U.S. Air Force Research Laboratory, Albuquerque, NM, USA 3: ONERA-The French Aerospace Company, Toulouse, France 4: Centre National d'Etudes Spatiales, Toulouse, France 5: Kyushu Institute of Technology, Kitakyushu, Japan 6: Japan Aerospace Exploration Agency, Tsukuba, Japan; Source Info: Dec2013 Part 2, Vol. 41 Issue 12, p3303; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: LOW temperature plasmas; Subject Term: PARTICLES (Nuclear physics); Subject Term: ELECTRIC fields; Subject Term: ANALYTICAL mechanics; Author-Supplied Keyword: Aerospace simulation; Author-Supplied Keyword: Computational modeling; Author-Supplied Keyword: Electric potential; Author-Supplied Keyword: Ions; Author-Supplied Keyword: Numerical models; Author-Supplied Keyword: plasma sheath; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Poisson equations; Author-Supplied Keyword: Space vehicles; Author-Supplied Keyword: wake structure; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TPS.2013.2247424 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92943634&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ferguson, Dale C. AU - Vayner, Boris V. T1 - Flashover Current Pulse Formation and the Perimeter Theory. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2013/12/10/Dec2013 Part 2 VL - 41 IS - 12 M3 - Article SP - 3393 EP - 3401 SN - 00933813 AB - Electrostatic discharges on the spacecraft solar array surfaces have been studied for over 40 years. Multiple tests in many laboratories have been performed to reveal the mechanisms of current pulse formation, to determine plasma expansion speed and dimensions of neutralized surface area, and to define the parameters of the electric circuits to be able to adequately simulate space discharges in plasma chambers. Initially, a thorough analysis of all the available experimental data is performed to achieve progress in the creation of a satisfactory theoretical description of pulse wave forms and surface neutralization processes. It is shown that there are two main reasons for the significant variations observed in pulse wave forms, durations, and amplitudes; differences in test arrangements and pure statistical variations caused by the random nature of arc inception and development. Then, the theoretical model of flashover current pulse formation due to coverglass charge neutralization at the plasma perimeter is carefully considered and confronted with existing experimental data. It is found that this theory contains some appropriate elements but cannot be applied for quantitative explanation of pulse wave forms. The comparison of theoretical results and experimental data clearly shows that there is no (and there cannot be) such thing as a standard pulse. To estimate the possibility of detrimental effects from primary arcs, these events must be studied and analyzed statistically. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLASHOVER KW - DIRECT currents KW - ELECTRIC fields KW - SPACE vehicles -- Electrostatic charging KW - ELECTROSTATIC discharges KW - Arrays KW - Capacitance KW - Capacitors KW - Current measurement KW - DC electric field measurements KW - Discharges (electric) KW - Plasma measurements KW - Plasmas KW - spacecraft charging N1 - Accession Number: 92943651; Ferguson, Dale C. 1 Vayner, Boris V. 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, Albuquerque, NM, USA 2: Ohio Aerospace Institute, Cleveland, OH, USA; Source Info: Dec2013 Part 2, Vol. 41 Issue 12, p3393; Subject Term: FLASHOVER; Subject Term: DIRECT currents; Subject Term: ELECTRIC fields; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: ELECTROSTATIC discharges; Author-Supplied Keyword: Arrays; Author-Supplied Keyword: Capacitance; Author-Supplied Keyword: Capacitors; Author-Supplied Keyword: Current measurement; Author-Supplied Keyword: DC electric field measurements; Author-Supplied Keyword: Discharges (electric); Author-Supplied Keyword: Plasma measurements; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: spacecraft charging; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TPS.2013.2279760 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92943651&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ferguson, Dale C. AU - Cooke, David AU - Pfaff, Robert AU - Rowland, Douglas AU - Klenzing, Jeffrey AU - Freudenreich, Henry T1 - Ram/Wake and Surface Layer Effects on DC Electric Field Measurements in LEO. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2013/12/10/Dec2013 Part 2 VL - 41 IS - 12 M3 - Article SP - 3459 EP - 3470 SN - 00933813 AB - The USAF Communication/Navigation Outage Forecast System satellite, launched into an eccentric low earth orbit (401 km perigee by 867 km apogee) of 13^\circ inclination on April 16, 2008, has a set of dc electric field probes that constitute part of the Vector Electric Field Investigation (VEFI). In order to obtain the ambient electric field, the v\times B component of electric field must be subtracted from the VEFI measurements. After this subtraction and the subtraction of the ambient dc electric components, a residual dc offset directed toward the spacecraft wake is still observed, which varies somewhat within an orbit and on longer timescales. One of the interesting features of these offsets is that when the satellite is occasionally rotated, the offsets are reset to their baseline values, only to come back within a month or so. Various hypotheses have been proposed to explain the residual dc offsets. In this paper, we explore the possibilities that either the influence of the spacecraft wake on the sensors or that modified surface layers on the probe surfaces are producing the offsets. Nascap-2k and EWB models are used to show the various influences of the wake and of surface materials. Finally, a hypothesis is produced that quantitatively explains many of the salient features of the offsets. The feasibility of using dc electric field probes in space is reaffirmed. Recommendations for probe construction on future spacecraft to ameliorate spurious effects are presented. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOW earth orbit satellites KW - RESEARCH KW - ELECTRIC fields KW - DIRECT currents KW - SPACE vehicles -- Electrostatic charging KW - FIELD theory (Physics) KW - DC electric field measurements KW - Electric potential KW - Extraterrestrial measurements KW - Ions KW - Plasmas KW - Probes KW - Satellites KW - Space vehicles KW - spacecraft charging N1 - Accession Number: 92943648; Ferguson, Dale C. 1 Cooke, David 1 Pfaff, Robert 2 Rowland, Douglas 2 Klenzing, Jeffrey 2 Freudenreich, Henry 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, Albuquerque, NM, USA 2: NASA Goddard Space Flight Center, Greenbelt, MD, USA; Source Info: Dec2013 Part 2, Vol. 41 Issue 12, p3459; Subject Term: LOW earth orbit satellites; Subject Term: RESEARCH; Subject Term: ELECTRIC fields; Subject Term: DIRECT currents; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: FIELD theory (Physics); Author-Supplied Keyword: DC electric field measurements; Author-Supplied Keyword: Electric potential; Author-Supplied Keyword: Extraterrestrial measurements; Author-Supplied Keyword: Ions; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Probes; Author-Supplied Keyword: Satellites; Author-Supplied Keyword: Space vehicles; Author-Supplied Keyword: spacecraft charging; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TPS.2013.2278615 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92943648&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shiue, Ren-Jye AU - Gan, Xuetao AU - Gao, Yuanda AU - Li, Luozhou AU - Yao, Xinwen AU - Szep, Attila AU - Walker, Dennis AU - Hone, James AU - Englund, Dirk T1 - Enhanced photodetection in graphene-integrated photonic crystal cavity. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/12/09/ VL - 103 IS - 24 M3 - Article SP - 241109 PB - American Institute of Physics SN - 00036951 AB - We demonstrate the controlled enhancement of photoresponsivity in a graphene photodetector by coupling to slow light modes in a long photonic crystal linear defect cavity. Near the Brillouin zone (BZ) boundary, spectral coupling of multiple cavity modes results in broad-band photocurrent enhancement from 1530 nm to 1540 nm. Away from the BZ boundary, individual cavity resonances enhance the photocurrent eight-fold in narrow resonant peaks. Optimization of the photocurrent via critical coupling of the incident field with the graphene-cavity system is discussed. The enhanced photocurrent demonstrates the feasibility of a wavelength-scale graphene photodetector for efficient photodetection with high spectral selectivity and broadband response. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTODETECTORS KW - GRAPHENE -- Optical properties KW - PHOTONIC crystals KW - BRILLOUIN zones KW - CRYSTALS -- Electric properties KW - ENERGY-band theory of solids N1 - Accession Number: 92961810; Shiue, Ren-Jye 1 Gan, Xuetao 2 Gao, Yuanda 3 Li, Luozhou 2 Yao, Xinwen 2 Szep, Attila 4 Walker, Dennis 4 Hone, James 3 Englund, Dirk 1; Affiliation: 1: Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, 2: Department of Electrical Engineering, Columbia University, New York, New York 10027, 3: Department of Mechanical Engineering, Columbia University, New York, New York 10027, 4: Air Force Research Laboratory, Sensors Directorate, WPAFB, Dayton, Ohio 45433,; Source Info: 12/9/2013, Vol. 103 Issue 24, p241109; Subject Term: PHOTODETECTORS; Subject Term: GRAPHENE -- Optical properties; Subject Term: PHOTONIC crystals; Subject Term: BRILLOUIN zones; Subject Term: CRYSTALS -- Electric properties; Subject Term: ENERGY-band theory of solids; Number of Pages: 4p; Illustrations: 2 Diagrams, 1 Graph; Document Type: Article L3 - 10.1063/1.4839235 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92961810&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gunasekera, Thusitha S. AU - Striebich, Richard C. AU - Mueller, Susan S. AU - Strobel, Ellen M. AU - Ruiz, Oscar N. T1 - Transcriptional Profiling Suggests that Multiple Metabolic Adaptations are Required for Effective Proliferation of Pseudomonas aeruginosa in Jet Fuel. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2013/12/03/ VL - 47 IS - 23 M3 - Article SP - 13449 EP - 13458 SN - 0013936X AB - Fuel is a harsh environment for microbial growth. However, some bacteria can grow well due to their adaptive mechanisms. Our goal was to characterize the adaptations required for Pseudomonas aeruginosa proliferation in fueL We have used DNA-microarrays and RT-PCR to characterize the transcriptional response of P. aeruginosa to fuel. Transcriptomics revealed that genes essential for medium- and long-chain n- alkane degradation including alkBl and alkB2 were transcriptionally induced. Gas chromatography confirmed that P. aeruginosa possesses pathways to degrade different length n-alkanes, favoring the use of s-C11-18. Furthermore, a gamut of synergistic metabolic pathways, including porins, efflux pumps, biofllm formation, and iron transport, were transcriptionally regulated. Bioassays confirmed that efflux pumps and biofllm formation were required for growth in jet fueL Furthermore, cell homeostasis appeared to be carefully maintained by the regulation of porins and efflux pumps. The Mex RND efflux pumps were required for fuel tolerance; blockage of these pumps precluded growth in fuel. This study provides a global understanding of the multiple metabolic adaptations required by bacteria for survival and proliferation in fuel-containing environments. This information can be applied to improve the fuel bioremediation properties of bacteria. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROBIAL growth KW - RESEARCH KW - BACTERIA -- Research KW - PSEUDOMONAS aeruginosa KW - PSEUDOMONAS KW - GAS chromatography N1 - Accession Number: 95311839; Gunasekera, Thusitha S. 1 Striebich, Richard C. 1 Mueller, Susan S. 1 Strobel, Ellen M. 2 Ruiz, Oscar N. 2; Email Address: oscar.ruiz@us.af.mil; Affiliation: 1: University of Dayton Research Jnstitute, University of Dayton, Dayton Ohio 45469, United States 2: Aerospace Systems Directorate, Fuels and Energy Branch, Air Force Research Laboratory, 1790 Loop Road, Bldg. 490, Wright-Patterson AFB, Ohio 45433, United States; Source Info: 12/3/2013, Vol. 47 Issue 23, p13449; Subject Term: MICROBIAL growth; Subject Term: RESEARCH; Subject Term: BACTERIA -- Research; Subject Term: PSEUDOMONAS aeruginosa; Subject Term: PSEUDOMONAS; Subject Term: GAS chromatography; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 10p; Document Type: Article L3 - 10.1021/es403163k UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95311839&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Golovin, Kevin AU - Lee, Duck H. AU - Mabry, Joseph M. AU - Tuteja, Anish T1 - Innenrücktitelbild: Transparent, Flexible, Superomniphobic Surfaces with Ultra-Low Contact Angle Hysteresis (Angew. Chem. 49/2013). JO - Angewandte Chemie JF - Angewandte Chemie Y1 - 2013/12/02/ VL - 125 IS - 49 M3 - Article SP - 13343 EP - 13343 SN - 00448249 KW - Materialwissenschaften KW - Oberflächenchemie KW - Spraymethoden KW - Superomniphobie KW - Transparenz N1 - Accession Number: 92600023; Golovin, Kevin 1 Lee, Duck H. 1 Mabry, Joseph M. 2 Tuteja, Anish 1; Affiliation: 1: Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109 (USA) 2: Space and Missile Propulsion Division, Air Force Research Laboratory, Edwards Air Force Base, CA 93524 (USA); Source Info: Dec2013, Vol. 125 Issue 49, p13343; Author-Supplied Keyword: Materialwissenschaften; Author-Supplied Keyword: Oberflächenchemie; Author-Supplied Keyword: Spraymethoden; Author-Supplied Keyword: Superomniphobie; Author-Supplied Keyword: Transparenz; Number of Pages: 1p; Document Type: Article L3 - 10.1002/ange.201309816 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92600023&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Golovin, Kevin AU - Lee, Duck H. AU - Mabry, Joseph M. AU - Tuteja, Anish T1 - Transparent, Flexible, Superomniphobic Surfaces with Ultra-Low Contact Angle Hysteresis. JO - Angewandte Chemie International Edition JF - Angewandte Chemie International Edition Y1 - 2013/12/02/ VL - 52 IS - 49 M3 - Article SP - 13007 EP - 13011 SN - 14337851 AB - The article presents a research study which describes a facile spray method on polydimethyl siloxane (PDMS) pillars for the creation of transparent, flexible, and superomniphobic surfaces with low or high surface tension. Experimental results revealed the effectiveness of the proposed method following the development of mathematically and visually transparent surfaces. The impact of the pillar height on the transparency of the surfaces is discussed. KW - SPRAYING KW - POLYDIMETHYLSILOXANE KW - SURFACE tension KW - TRANSPARENCY (Optics) KW - SURFACE chemistry KW - materials science KW - spray methods KW - superomniphobicity KW - surface chemistry KW - transparency N1 - Accession Number: 92599371; Golovin, Kevin 1 Lee, Duck H. 1 Mabry, Joseph M. 2 Tuteja, Anish 1; Affiliation: 1: Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109 (USA) 2: Space and Missile Propulsion Division, Air Force Research Laboratory, Edwards Air Force Base, CA 93524 (USA); Source Info: Dec2013, Vol. 52 Issue 49, p13007; Subject Term: SPRAYING; Subject Term: POLYDIMETHYLSILOXANE; Subject Term: SURFACE tension; Subject Term: TRANSPARENCY (Optics); Subject Term: SURFACE chemistry; Author-Supplied Keyword: materials science; Author-Supplied Keyword: spray methods; Author-Supplied Keyword: superomniphobicity; Author-Supplied Keyword: surface chemistry; Author-Supplied Keyword: transparency; Number of Pages: 5p; Document Type: Article L3 - 10.1002/anie.201307222 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92599371&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Golovin, Kevin AU - Lee, Duck H. AU - Mabry, Joseph M. AU - Tuteja, Anish T1 - Inside Back Cover: Transparent, Flexible, Superomniphobic Surfaces with Ultra-Low Contact Angle Hysteresis (Angew. Chem. Int. Ed. 49/2013). JO - Angewandte Chemie International Edition JF - Angewandte Chemie International Edition Y1 - 2013/12/02/ VL - 52 IS - 49 M3 - Article SP - 13105 EP - 13105 SN - 14337851 AB - The cover page of the journal "Angewandte Chemie," International Edition, is presented. KW - SURFACE chemistry KW - SURFACES (Physics) KW - materials science KW - spray methods KW - superomniphobicity KW - surface chemistry KW - transparency N1 - Accession Number: 92599392; Golovin, Kevin 1 Lee, Duck H. 1 Mabry, Joseph M. 2 Tuteja, Anish 1; Affiliation: 1: Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109 (USA) 2: Space and Missile Propulsion Division, Air Force Research Laboratory, Edwards Air Force Base, CA 93524 (USA); Source Info: Dec2013, Vol. 52 Issue 49, p13105; Subject Term: SURFACE chemistry; Subject Term: SURFACES (Physics); Author-Supplied Keyword: materials science; Author-Supplied Keyword: spray methods; Author-Supplied Keyword: superomniphobicity; Author-Supplied Keyword: surface chemistry; Author-Supplied Keyword: transparency; Number of Pages: 1p; Document Type: Article L3 - 10.1002/anie.201309816 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92599392&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhou, Z. AU - Nan, T. X. AU - Gao, Y. AU - Yang, X. AU - Beguhn, S. AU - Li, M. AU - Lu, Y. AU - Wang, J. L. AU - Liu, M. AU - Mahalingam, K. AU - Howe, B. M. AU - Brown, G. J. AU - Sun, N. X. T1 - Quantifying thickness-dependent charge mediated magnetoelectric coupling in magnetic/dielectric thin film heterostructures. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/12/02/ VL - 103 IS - 23 M3 - Article SP - 232906 PB - American Institute of Physics SN - 00036951 AB - Precise quantification of the magnetoelectric coupling strength in surface charge induced magnetoelectric effect was investigated in NiFe/SrTiO3 thin film heterostructures with different ultra-thin NiFe thicknesses through voltage induced ferromagnetic resonance. The voltage induced ferromagnetic resonance field shifts in these NiFe/SrTiO3 thin films heterostructures showed a maximum value of 65 Oe at an intermediate NiFe layer thickness of ∼1.2 nm, which was interpreted based on the thin film growth model at the low-thicknesses and on the charge screening effect at large thicknesses. The precise quantification and understanding of the magnetoelectric coupling in magnetic/dielectric thin films heterostructures constitute an important step toward real applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETOELECTRIC effect KW - RESEARCH KW - MAGNETIC couplings KW - THIN films -- Magnetic properties KW - FERROMAGNETIC resonance KW - HETEROSTRUCTURES N1 - Accession Number: 92762449; Zhou, Z. 1 Nan, T. X. 1 Gao, Y. 1 Yang, X. 1 Beguhn, S. 1 Li, M. 1 Lu, Y. 2 Wang, J. L. 2 Liu, M. 3 Mahalingam, K. 3 Howe, B. M. 3 Brown, G. J. 3 Sun, N. X. 1; Affiliation: 1: Department of Electrical and Computer Engineering, Northeastern University, Boston, Massachusetts 02115, 2: School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7707,; Source Info: 12/2/2013, Vol. 103 Issue 23, p232906; Subject Term: MAGNETOELECTRIC effect; Subject Term: RESEARCH; Subject Term: MAGNETIC couplings; Subject Term: THIN films -- Magnetic properties; Subject Term: FERROMAGNETIC resonance; Subject Term: HETEROSTRUCTURES; Number of Pages: 5p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.4839276 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92762449&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Habash Krause, L. AU - Enloe, C.L. AU - McHarg, M.G. T1 - In situ measurements of ionospheric plasma turbulence over five frequency decades: Heritage flight of the Plasma Local Anomalous Noise Experiment (PLANE). JO - Advances in Space Research JF - Advances in Space Research Y1 - 2013/12// VL - 52 IS - 11 M3 - Article SP - 2006 EP - 2014 SN - 02731177 AB - Highlights: [•] We analyze in situ observations of ion density turbulence within the F-region ionosphere. [•] Turbulence was measured using a modified Retarding Potential Analyzer on FalconSAT-3. [•] The new ion turbulence monitor distinguished local from ambient density fluctuations. [•] An active pulsed plasma source was used to test the monitor under controlled conditions. [•] The turbulence spectral power monotonically decreased with increasing frequency. [ABSTRACT FROM AUTHOR] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSPHERIC plasma KW - PLASMA turbulence KW - FLUCTUATIONS (Physics) KW - PULSED plasma thrusters KW - MONOTONIC functions KW - POTENTIAL theory (Physics) KW - Ionospheric turbulence KW - Plasma turbulence KW - Plasma wave measurements KW - Retarding potential analyzers N1 - Accession Number: 91953927; Habash Krause, L. 1; Email Address: Linda.H.Krause@nasa.gov Enloe, C.L. 2; Email Address: Lon.Enloe@usafa.edu McHarg, M.G. 2; Email Address: Matthew.McHarg@usafa.edu; Affiliation: 1: Space Science Office, ZP13, NASA Marshall Space Flight Center, Huntsville, AL 35812, USA 2: HQ USAFA/DFP, Department of Physics, United States Air Force Academy, CO 80840, USA; Source Info: Dec2013, Vol. 52 Issue 11, p2006; Subject Term: IONOSPHERIC plasma; Subject Term: PLASMA turbulence; Subject Term: FLUCTUATIONS (Physics); Subject Term: PULSED plasma thrusters; Subject Term: MONOTONIC functions; Subject Term: POTENTIAL theory (Physics); Author-Supplied Keyword: Ionospheric turbulence; Author-Supplied Keyword: Plasma turbulence; Author-Supplied Keyword: Plasma wave measurements; Author-Supplied Keyword: Retarding potential analyzers; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.asr.2013.06.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91953927&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Titus, James T1 - The Art of Air Power: Sun Tzu Revisited. JO - Air & Space Power Journal: Afrique et Francophonie JF - Air & Space Power Journal: Afrique et Francophonie Y1 - 2013/12//Nov/Dec2013 VL - 27 IS - 6 M3 - Book Review SP - 135 EP - 137 SN - 1931728X KW - MILITARY strategy KW - NONFICTION KW - KAINIKARA, Sanu KW - ART of Air Power: Sun Tzu Revisited, The (Book) N1 - Accession Number: 94466932; Titus, James 1; Affiliation: 1: US Air Force Academy; Source Info: Nov/Dec2013, Vol. 27 Issue 6, p135; Subject Term: MILITARY strategy; Subject Term: NONFICTION; Reviews & Products: ART of Air Power: Sun Tzu Revisited, The (Book); People: KAINIKARA, Sanu; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94466932&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McKinley, R. Andy AU - Mclntire, Lindsey AU - Bridges, Nathaniel AU - Goodyear, Charles AU - Weisend, Michael P. T1 - Acceleration of Image Analyst Training With Transcranial Direct Current Stimulation. JO - Behavioral Neuroscience JF - Behavioral Neuroscience Y1 - 2013/12// VL - 127 IS - 6 M3 - Article SP - 936 EP - 946 SN - 07357044 AB - Humans today are routinely and increasingly presented with vast quantities of data that challenge their capacity for efficient processing. To restore the balance between man and machine, it is worthwhile to explore new methods for enhancing or accelerating this capacity. This study was designed to investigate the efficacy of transcranial DC stimulation (tDCS) to reduce training time and increase proficiency in spatial recognition using a simulated synthetic aperture radar (SAR) task. Twenty-seven Air Force active duty members volunteered to participate in the study. Each participant was assigned to 1 of 3 stimulation groups and received two, 90-min training sessions on a target search and identification task using SAR imagery followed by a test. The tDCS anode was applied to site F10 according to the 10-20 electroencephalographic electrode convention while the cathode was placed on the contralateral bicep. Group 1 received anodal tDCS at 2 mA for 30 min in the first training session and sham tDCS in the second session. Group 2 received the stimulation conditions in the opposite order. Group 3 did not receive stimulation at all. Results showed that participants receiving training plus tDCS attained visual search accuracies ~25% higher than those provided with sham stimulation or no stimulation. However, a corresponding performance improvement was not found in the first training session for the change detection portion of the task. This indicates that experience with the imagery is important in the tDCS-elicited performance improvements in change detection. [ABSTRACT FROM AUTHOR] AB - Copyright of Behavioral Neuroscience is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSCRANIAL Doppler ultrasonography KW - SYNTHETIC aperture radar KW - AIRMEN KW - TASK performance KW - ELECTROENCEPHALOGRAPHY KW - COMPUTER simulation KW - cognitive performance KW - learning KW - military KW - noninvasive brain stimulation KW - tDCS N1 - Accession Number: 93253925; McKinley, R. Andy 1; Email Address: andy.mckinley@wpafb.af.mil Mclntire, Lindsey 2 Bridges, Nathaniel 2 Goodyear, Charles 2 Weisend, Michael P. 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 2: Infoscitex Corporation, Dayton, Ohio 3: Wright State Research Institute, Dayton, Ohio; Source Info: Dec2013, Vol. 127 Issue 6, p936; Subject Term: TRANSCRANIAL Doppler ultrasonography; Subject Term: SYNTHETIC aperture radar; Subject Term: AIRMEN; Subject Term: TASK performance; Subject Term: ELECTROENCEPHALOGRAPHY; Subject Term: COMPUTER simulation; Author-Supplied Keyword: cognitive performance; Author-Supplied Keyword: learning; Author-Supplied Keyword: military; Author-Supplied Keyword: noninvasive brain stimulation; Author-Supplied Keyword: tDCS; Number of Pages: 11p; Document Type: Article L3 - 10.1037/a0034975 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93253925&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tolstykh, Gleb P. AU - Beier, Hope T. AU - Roth, Caleb C. AU - Thompson, Gary L. AU - Payne, Jason A. AU - Kuipers, Marjorie A. AU - Ibey, Bennett L. T1 - Activation of intracellular phosphoinositide signaling after a single 600 nanosecond electric pulse. JO - Bioelectrochemistry JF - Bioelectrochemistry Y1 - 2013/12// VL - 94 M3 - Article SP - 23 EP - 29 SN - 15675394 AB - Abstract: Exposure to nanosecond pulsed electrical fields (nsPEFs) results in a myriad of observable effects in mammalian cells. While these effects are often attributed to the direct permeabilization of both the plasma and organelle membranes, the underlying mechanism(s) are not well understood. We hypothesize that nsPEF-induced membrane disturbance will initiate complex intracellular lipid signaling pathways, which ultimately lead to the observed multifarious effects. In this article, we show activation of one of these pathways — phosphoinositide signaling cascade. Here we demonstrate that nsPEF initiates phosphatidylinositol 4,5-bisphosphate (PtdIns(4,5)P2) hydrolysis or depletion from the plasma membrane, accumulation of inositol-1,4,5-trisphosphate (IP3) in the cytoplasm and increase of diacylglycerol (DAG) on the inner surface of the plasma membrane. All of these events are initiated by a single 16.2kV/cm, 600ns pulse exposure. To further this claim, we show that the nsPEF-induced activation mirrors the response of M1-acetylcholine Gq/11-coupled metabotropic receptor (hM1). This demonstration of PIP2 hydrolysis by nsPEF exposure is an important step toward understanding the mechanisms underlying this unique stimulus for activation of lipid signaling pathways and is critical for determining the potential for nsPEFs to modulate mammalian cell functions. [Copyright &y& Elsevier] AB - Copyright of Bioelectrochemistry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOSPHOINOSITIDES KW - ELECTRIC fields KW - CELLULAR signal transduction KW - PERMEABILITY KW - BLOOD cells KW - CELL membranes KW - Electric pulse KW - Phosphoinositide signaling KW - PIP2 depletion KW - PKC and PLC KW - Plasma membrane nanopore N1 - Accession Number: 90524496; Tolstykh, Gleb P. 1 Beier, Hope T. 2 Roth, Caleb C. 3 Thompson, Gary L. 1 Payne, Jason A. 4 Kuipers, Marjorie A. 4 Ibey, Bennett L. 4; Email Address: bennettibey@gmail.com; Affiliation: 1: National Research Council, Fort Sam Houston, TX, USA 2: Optical Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory, Fort Sam Houston, TX, USA 3: Department of Radiological Sciences, University of Texas Health Science Center San Antonio, San Antonio, TX, USA 4: Radio Frequency Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory, Fort Sam Houston, TX, USA; Source Info: Dec2013, Vol. 94, p23; Subject Term: PHOSPHOINOSITIDES; Subject Term: ELECTRIC fields; Subject Term: CELLULAR signal transduction; Subject Term: PERMEABILITY; Subject Term: BLOOD cells; Subject Term: CELL membranes; Author-Supplied Keyword: Electric pulse; Author-Supplied Keyword: Phosphoinositide signaling; Author-Supplied Keyword: PIP2 depletion; Author-Supplied Keyword: PKC and PLC; Author-Supplied Keyword: Plasma membrane nanopore; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.bioelechem.2013.05.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90524496&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Früh, Carolin AU - Kelecy, Thomas M. AU - Jah, Moriba K. T1 - Coupled orbit-attitude dynamics of high area-to-mass ratio (HAMR) objects: influence of solar radiation pressure, Earth’s shadow and the visibility in light curves. JO - Celestial Mechanics & Dynamical Astronomy JF - Celestial Mechanics & Dynamical Astronomy Y1 - 2013/12// VL - 117 IS - 4 M3 - Article SP - 385 EP - 404 SN - 09232958 AB - The orbital and attitude dynamics of uncontrolled Earth orbiting objects are perturbed by a variety of sources. In research, emphasis has been put on operational space vehicles. Operational satellites typically have a relatively compact shape, and hence, a low area-to-mass ratio (AMR), and are in most cases actively or passively attitude stabilized. This enables one to treat the orbit and attitude propagation as decoupled problems, and in many cases the attitude dynamics can be neglected completely. The situation is different for space debris objects, which are in an uncontrolled attitude state. Furthermore, the assumption that a steady-state attitude motion can be averaged over data reduction intervals may no longer be valid. Additionally, a subset of the debris objects have significantly high area-to-mass ratio (HAMR) values, resulting in highly perturbed orbits, e.g. by solar radiation pressure, even if a stable AMR value is assumed. Note, this assumption implies a steady-state attitude such that the average cross-sectional area exposed to the sun is close to constant. Time-varying solar radiation pressure accelerations due to attitude variations will result in un-modeled errors in the state propagation. This work investigates the evolution of the coupled attitude and orbit motion of HAMR objects. Standardized pieces of multilayer insulation (MLI) are simulated in a near geosynchronous orbits. It is assumed that the objects are rigid bodies and are in uncontrolled attitude states. The integrated effects of the Earth gravitational field and solar radiation pressure on the attitude motion are investigated. The light curves that represent the observed brightness variations over time in a specific viewing direction are extracted. A sensor model is utilized to generate light curves with visibility constraints and magnitude uncertainties as observed by a standard ground based telescope. The photometric models will be needed when combining photometric and astrometric observations for estimation of orbit and attitude dynamics of non-resolved space objects. [ABSTRACT FROM AUTHOR] AB - Copyright of Celestial Mechanics & Dynamical Astronomy is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR radiation KW - LIGHT curves KW - PERTURBATION (Astronomy) KW - SPACE vehicles KW - ARTIFICIAL satellites KW - SPACE debris KW - DYNAMIC models KW - Artificial satellites and spacecrafts KW - Shadow models KW - Space debris KW - Visibility constraints N1 - Accession Number: 92031912; Früh, Carolin 1; Email Address: carolin.frueh@gmail.com Kelecy, Thomas M. 2 Jah, Moriba K. 3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, University of New Mexico, Albuquerque, NM, USA 2: The Boeing Company, 5555 Tech Center Dr., Ste 400, Colorado Springs, CO, 80919, USA 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland, NM, 87117, USA; Source Info: Dec2013, Vol. 117 Issue 4, p385; Subject Term: SOLAR radiation; Subject Term: LIGHT curves; Subject Term: PERTURBATION (Astronomy); Subject Term: SPACE vehicles; Subject Term: ARTIFICIAL satellites; Subject Term: SPACE debris; Subject Term: DYNAMIC models; Author-Supplied Keyword: Artificial satellites and spacecrafts; Author-Supplied Keyword: Shadow models; Author-Supplied Keyword: Space debris; Author-Supplied Keyword: Visibility constraints; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 20p; Document Type: Article L3 - 10.1007/s10569-013-9516-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92031912&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schmidt, Jacob AU - Ganguly, Biswa T1 - Effect of pulsed, sub-breakdown applied electric field on propane/air flame through simultaneous OH/acetone PLIF. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2013/12// VL - 160 IS - 12 M3 - Article SP - 2820 EP - 2826 SN - 00102180 AB - Abstract: The effects of chemi-ion current induced flow perturbations in a premixed, laminar propane/air flame at atmospheric pressure have been measured with 30ms-wide applied pulsed voltages. Single-shot OH and acetone planar laser-induced fluorescence (PLIF) images have been collected to measure the spatio-temporal structural changes to a laminar flame with incoming flow speed of 2m/s in response to positive polarity voltage pulses of 2.8kV over a 20mm electrode gap. OH and acetone PLIF are specifically chosen to measure reaction zone modification as the flame undergoes large-scale, stochastic changes. These large-scale changes of flame structure are observed after the flame becomes fully crushed and unstable behavior occurs lasting until the end of the applied voltage pulse. The experimental results of combined OH and acetone PLIF presented in this paper show a significant widening of the reaction zone observed during this unstable behavior. This widening of the reaction zone is indicative of a flame brush normally observed in turbulent flames, demonstrating the ability of the sub-breakdown applied voltage to cause a laminar flame to a transitioning-to-turbulent behavior. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLAME KW - PROPANE KW - ELECTRIC fields KW - ACETONE KW - LASER-induced fluorescence KW - STOCHASTIC analysis KW - Electric field KW - Hydrocarbon combustion KW - Laser diagnostics KW - Premixed laminar flame N1 - Accession Number: 90629855; Schmidt, Jacob 1; Email Address: jschmidt@spectralenergies.com Ganguly, Biswa 2; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield Street, Dayton, OH 45431, United States 2: Air Force Research Laboratory, WPAFB, OH 45433, United States; Source Info: Dec2013, Vol. 160 Issue 12, p2820; Subject Term: FLAME; Subject Term: PROPANE; Subject Term: ELECTRIC fields; Subject Term: ACETONE; Subject Term: LASER-induced fluorescence; Subject Term: STOCHASTIC analysis; Author-Supplied Keyword: Electric field; Author-Supplied Keyword: Hydrocarbon combustion; Author-Supplied Keyword: Laser diagnostics; Author-Supplied Keyword: Premixed laminar flame; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 424710 Petroleum Bulk Stations and Terminals; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 454312 Liquefied petroleum gas (bottled gas) dealers; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.combustflame.2013.06.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90629855&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gowayed, Y. AU - Ojard, G. AU - Prevost, E. AU - Santhosh, U. AU - Jefferson, G. T1 - Defects in ceramic matrix composites and their impact on elastic properties. JO - Composites: Part B, Engineering JF - Composites: Part B, Engineering Y1 - 2013/12// VL - 55 M3 - Article SP - 167 EP - 175 SN - 13598368 AB - Abstract: Defects created during the manufacture of an oxide/oxide and two non-oxide (SiC/SiNC and MI SiC/SiC) ceramic matrix composites (CMCs) were categorized as follows: (1) Intra-yarn defects such as dry fibers, (2) Inter-yarn defects such as those at crossover points, matrix voids, shrinkage cracks and interlaminar separation, and (3) Architectural defects such as layer misalignment. Their impact on elastic properties was analytically investigated using a stiffness averaging approach considering the defects to have volumetric and directional influences. In-plane tensile and shear moduli as well as the through-thickness compressive modulus were experimentally evaluated. Results of analytical model were around 7% on average from the mean value of the experimental data. It was observed that interlaminar separation drastically reduced the through-thickness modulus by about 63% for the SiC/SiNC, 40% for the MI SiC/SiC and around 32% for the oxide/oxide composites. Shrinkage cracks in oxide/oxide composite reduced the in-plane tensile and shear moduli by 14% and 8.8%, respectively. [Copyright &y& Elsevier] AB - Copyright of Composites: Part B, Engineering is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MANUFACTURING industries -- Defects KW - FIBER-reinforced ceramics KW - ELASTICITY KW - SILICON carbide KW - TENSILE strength KW - CONCRETE -- Expansion & contraction KW - A. Ceramic matrix composites KW - B. Elasticity KW - C. Analytical modeling KW - D. Mechanical testing N1 - Accession Number: 90214092; Gowayed, Y. 1; Email Address: gowayya@auburn.edu Ojard, G. 2 Prevost, E. 2 Santhosh, U. 3 Jefferson, G. 4; Affiliation: 1: Department of Polymer and Fiber Engineering, Auburn University, Auburn, AL, United States 2: Pratt & Whitney, East Hartford, CT, United States 3: Structural Analytics, Inc., Carlsbad, CA, United States 4: Air Force Research Laboratory, AFRL/RXLN, Wright-Patterson AFB, OH, United States; Source Info: Dec2013, Vol. 55, p167; Subject Term: MANUFACTURING industries -- Defects; Subject Term: FIBER-reinforced ceramics; Subject Term: ELASTICITY; Subject Term: SILICON carbide; Subject Term: TENSILE strength; Subject Term: CONCRETE -- Expansion & contraction; Author-Supplied Keyword: A. Ceramic matrix composites; Author-Supplied Keyword: B. Elasticity; Author-Supplied Keyword: C. Analytical modeling; Author-Supplied Keyword: D. Mechanical testing; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.compositesb.2013.06.026 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90214092&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dabrowski, Richard T1 - U.S.-Russian Cooperation in Science and Technology: A Case Study of the TOPAZ Space-Based Nuclear Reactor International Program. JO - Connections (18121098) JF - Connections (18121098) Y1 - 2013///Winter2013 VL - 13 IS - 1 M3 - Article SP - 71 EP - 87 SN - 18121098 AB - The article presents a case study of the Thermionic Experiment with Conversation in Active Zone (TOPAZ) International Program (TIP), a nuclear reactor program based on space, and its association with science and technology in the U.S. and Russia. Topics include the Thermionic System Evaluation Test (TSET), the foundation of the International Scientific Products (ISP) by scientists Joe Wetch and Ned Britt, and the technological relations of the two countries. KW - THERMIONIC converters KW - NUCLEAR reactors -- United States KW - ASTRONAUTICS -- International cooperation KW - RUSSIA -- Foreign relations -- United States KW - WETCH, Joe KW - BRITT, Ned N1 - Accession Number: 101877689; Dabrowski, Richard 1; Affiliation: 1: Lieutenant Colonel United States Air Force; Source Info: Winter2013, Vol. 13 Issue 1, p71; Subject Term: THERMIONIC converters; Subject Term: NUCLEAR reactors -- United States; Subject Term: ASTRONAUTICS -- International cooperation; Subject Term: RUSSIA -- Foreign relations -- United States; NAICS/Industry Codes: 927110 Space Research and Technology; People: WETCH, Joe; People: BRITT, Ned; Number of Pages: 18p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101877689&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Arias, Eduardo AU - Moggio, Ivana AU - Torres, Román AU - Ziolo, Ronald F. AU - Maldonado, José-Luis AU - Green, Kirk AU - Cooper, Thomas M. AU - Wicks, Geoffrey AU - Rebane, Aleksander AU - Drobizhev, Mikhail AU - Makarov, Nikolay S. AU - Ottonelli, Massimo AU - Dellepiane, Giovanna T1 - Direct Synthesis of 2,5-Bis(dodecanoxy)phenyleneethynylene-Butadiynes by Sonogashira Coupling Reaction. JO - European Journal of Organic Chemistry JF - European Journal of Organic Chemistry Y1 - 2013/12// VL - 2013 IS - 24 M3 - Article SP - 5341 EP - 5352 SN - 1434193X AB - The synthesis of a 2,5-bis(dodecanoxy)phenyleneethynylene-butadiyne series with 2, 4, 6 and 8 phenyl rings is reported. Sonogashira coupling reaction, rather than the Glaser/Eglinton/Hay reactions classically used for butadiyne formation was applied. The molecular structures of all compounds were confirmed by 1H, DEPT-135, APT 13C, MALDI-TOF, FTIR and FT-Raman analyses. The linear and nonlinear optical properties were studied in solution by UV/Vis, static and time-resolved fluorescence, and by two-photon absorption (2PA) spectroscopy. With the exception of the dimer, for which intersystem crossing is very favoured due to the low energy gap between the singlet and triplet states as theoretically predicted, the other oligomers present high fluorescence quantum yields (0.77-0.82) and large cross-sections (up to 5000 GM for the octamer) that could be applied in multiphoton microscopy or nonlinear optics. [ABSTRACT FROM AUTHOR] AB - Copyright of European Journal of Organic Chemistry is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIOACTIVITY KW - LUMINESCENCE KW - NONLINEAR optics KW - MOLECULAR structure KW - OLIGOMERS KW - Alkynes KW - Chain structures KW - Conjugation KW - Nonlinear optics KW - UV/Vis spectroscopy N1 - Accession Number: 89680150; Arias, Eduardo 1 Moggio, Ivana 1 Torres, Román 1 Ziolo, Ronald F. 1 Maldonado, José-Luis 2 Green, Kirk 3 Cooper, Thomas M. 4 Wicks, Geoffrey 5 Rebane, Aleksander 5 Drobizhev, Mikhail 5 Makarov, Nikolay S. 5 Ottonelli, Massimo 6 Dellepiane, Giovanna 6; Affiliation: 1: Centro de Investigación en Química Aplicada, Boulevard Enrique Reyna 140, 25294 Saltillo, Mexico, Fax: +52-844-4389839, http://www.ciqa.mx 2: Centro de Investigaciones en Óptica, Loma del Bosque 115, Col. Lomas del Campestre, 37150 León, Mexico 3: Department of Chemistry, McMaster University, 1280 Main St. W, Hamilton, Ontario, L8S 4M1, Canada 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, 3005 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433, USA 5: Physics Department, Montana State University, Bozeman, Montana 59717, USA 6: Dipartimento di Chimica e Chimica Industriale, Universitá di Genova, Via Dodecaneso 31, Genoa 16146, Italy; Source Info: Dec2013, Vol. 2013 Issue 24, p5341; Subject Term: RADIOACTIVITY; Subject Term: LUMINESCENCE; Subject Term: NONLINEAR optics; Subject Term: MOLECULAR structure; Subject Term: OLIGOMERS; Author-Supplied Keyword: Alkynes; Author-Supplied Keyword: Chain structures; Author-Supplied Keyword: Conjugation; Author-Supplied Keyword: Nonlinear optics; Author-Supplied Keyword: UV/Vis spectroscopy; Number of Pages: 12p; Document Type: Article L3 - 10.1002/ejoc.201300230 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89680150&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coutu, Ronald A. AU - Ostrow, Scott A. T1 - Microelectromechanical Systems (MEMS) Resistive Heaters as Circuit Protection Devices. JO - IEEE Transactions on Components, Packaging & Manufacturing Technology JF - IEEE Transactions on Components, Packaging & Manufacturing Technology Y1 - 2013/12// VL - 3 IS - 12 M3 - Article SP - 2174 EP - 2179 SN - 21563950 AB - With increased opportunities for the exploitation (i.e., reverse engineering) of vulnerable electronic components and systems, circuit protection has become a critical issue. Circuit protection techniques are generally software-based and include cryptography (encryption/decryption), obfuscation of codes, and software guards. Examples of hardware-based circuit protection include protective coatings on integrated circuits, trusted foundries, and macro-sized components that self-destruct, thus destroying critical components. This paper is the first to investigate the use of microelectromechanical systems (MEMS) to provide hardware-based protection of critical electronic components to prevent reverse engineering or other exploitation attempts. Specifically, surface-micromachined polycrystalline silicon to be used as meandering resistive heaters were designed analytically and fabricated using a commercially available MEMS prototyping service (i.e., PolyMUMPs), and integrated with representative components potentially at risk for exploitation, in this case pseudomorphic high-electron mobility transistors (pHEMTs). The MEMS heaters were initiated to self-destruct, destroying a critical circuit component and thwart a reverse engineering attempt. Tests revealed reliable self-destruction of the MEMS heaters with approximately 25 V applied, resulting in either complete operational failure or severely altering the pHEMT device physics. The prevalent failure mechanism was metallurgical, in that the material on the surface of the device was changed, and the specific failure mode was the creation of a short-circuit. Another failure mode was degraded device operation due to permanently altered device physics related to either dopant diffusion or ohmic contact degradation. The results, in terms of the failure of a targeted electronic component, demonstrate the utility of using MEMS devices to protect critical components which are otherwise vulnerable to exploitation. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Components, Packaging & Manufacturing Technology is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTROMECHANICAL systems KW - INTEGRATED circuits KW - CRYPTOGRAPHY KW - COMPUTER software KW - HEATING KW - THERMAL conductivity KW - REVERSE engineering KW - Circuit protection KW - Intellectual property KW - Microelectromechanical systems KW - microelectromechanical systems (MEMS) KW - PHEMTs KW - Resistance KW - resistive heaters KW - Reverse engineering KW - Thermal conductivity N1 - Accession Number: 92943456; Coutu, Ronald A. 1 Ostrow, Scott A. 2; Affiliation: 1: Department of Electrical Engineering, the Air Force Institute of Technology, Wright-Patterson Air Force Base, OH, USA 2: United States Air Force, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH, USA; Source Info: Dec2013, Vol. 3 Issue 12, p2174; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: INTEGRATED circuits; Subject Term: CRYPTOGRAPHY; Subject Term: COMPUTER software; Subject Term: HEATING; Subject Term: THERMAL conductivity; Subject Term: REVERSE engineering; Author-Supplied Keyword: Circuit protection; Author-Supplied Keyword: Intellectual property; Author-Supplied Keyword: Microelectromechanical systems; Author-Supplied Keyword: microelectromechanical systems (MEMS); Author-Supplied Keyword: PHEMTs; Author-Supplied Keyword: Resistance; Author-Supplied Keyword: resistive heaters; Author-Supplied Keyword: Reverse engineering; Author-Supplied Keyword: Thermal conductivity; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TCPMT.2013.2282362 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92943456&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Domonkos, Matthew AU - O'Loughlin, James T1 - Marxed transmission lines for compact pulsed power. JO - IEEE Transactions on Dielectrics & Electrical Insulation JF - IEEE Transactions on Dielectrics & Electrical Insulation Y1 - 2013/12// VL - 20 IS - 6 M3 - Article SP - 2350 EP - 2354 SN - 10709878 AB - The Marxed Blumlein line is a concept that has been touted as a highly compact pulsed power system because it combines the functions of energy storage, voltage scaling, and pulse shaping into a single sub-system. Inherent voltage reversal is compounded in a Marxed arrangement. The voltage reversal and transients induced by the switch jitter in a Marxed configuration require significant derating of the dielectric strength. Consequently, the system must be operated much below the intrinsic dielectric energy density, compromising efforts to design a compact pulsed power system. This paper presents the conclusion that for all practical configurations, the Marxed transmission line is the more compact architecture. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Dielectrics & Electrical Insulation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POWER transmission KW - ELECTRIC lines KW - PULSED power systems KW - ENERGY storage KW - POWER aware computing KW - VOLTAGE reversal KW - electrical insulation KW - Marxed operation KW - pulse forming line KW - Repetitive pulsed power KW - solid dielectric KW - transmission line N1 - Accession Number: 92943548; Domonkos, Matthew 1 O'Loughlin, James 1; Affiliation: 1: Air Force Research Laboratory 3550 Aberdeen Ave SE Kirtland AFB, NM 87117, USA; Source Info: Dec2013, Vol. 20 Issue 6, p2350; Subject Term: POWER transmission; Subject Term: ELECTRIC lines; Subject Term: PULSED power systems; Subject Term: ENERGY storage; Subject Term: POWER aware computing; Subject Term: VOLTAGE reversal; Author-Supplied Keyword: electrical insulation; Author-Supplied Keyword: Marxed operation; Author-Supplied Keyword: pulse forming line; Author-Supplied Keyword: Repetitive pulsed power; Author-Supplied Keyword: solid dielectric; Author-Supplied Keyword: transmission line; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238910 Site Preparation Contractors; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TDEI.2013.6678889 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92943548&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Edwards, Arthur H. AU - Barnaby, Hugh AU - Pineda, Andrew C. AU - Schultz, Peter A. T1 - Interface Effects on Total Energy Calculations for Radiation-Induced Defects. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2013/12//Dec2013 Part 1 VL - 60 IS - 6 M3 - Article SP - 4109 EP - 4115 SN - 00189499 AB - We present a new, approximate technique for estimating the polarization energy of point defects near interfaces in layered systems using semiconductor device simulation combined with a finite element quadrature technique. We show that we recapture the original, spherical Jost approximation in a homogeneous, infinite solid, as well as reproducing the exact result for a point charge near the interface of two dielectrics. We apply this technique to the silicon-silicon dioxide system for doped substrates, and for devices under bias. We show that the correction to calculated, bulk defect levels depends mildly on the distance from the interface. It depends more strongly on the substrate doping density. Finally, there is a significant dependence on gate bias. These results must be considered for proposed models for negative bias temperature instability (NBTI) that invoke tunneling from the silicon band edges into localized oxide traps. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POINT defects KW - RESEARCH KW - IONIZING radiation -- Dosage KW - SEMICONDUCTOR devices KW - ELECTRONIC structure KW - FINITE element method KW - Approximation methods KW - Boundary conditions KW - Doping KW - Electronic Structure KW - Finite element analysis KW - radiation-induced point defects KW - Substrates KW - Tunneling N1 - Accession Number: 93280950; Edwards, Arthur H. 1 Barnaby, Hugh 2 Pineda, Andrew C. 3 Schultz, Peter A. 4; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 2: Department of Electrical and Computer Engineering, Arizona State University, Tempe, AZ, USA 3: Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM, USA 4: Advanced Device Technlologies Department, Sandia National Laboratories, Albuquerque, NM, USA; Source Info: Dec2013 Part 1, Vol. 60 Issue 6, p4109; Subject Term: POINT defects; Subject Term: RESEARCH; Subject Term: IONIZING radiation -- Dosage; Subject Term: SEMICONDUCTOR devices; Subject Term: ELECTRONIC structure; Subject Term: FINITE element method; Author-Supplied Keyword: Approximation methods; Author-Supplied Keyword: Boundary conditions; Author-Supplied Keyword: Doping; Author-Supplied Keyword: Electronic Structure; Author-Supplied Keyword: Finite element analysis; Author-Supplied Keyword: radiation-induced point defects; Author-Supplied Keyword: Substrates; Author-Supplied Keyword: Tunneling; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TNS.2013.2287882 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93280950&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ingalls, J. David AU - Gadlage, Matthew J. AU - Duncan, Adam R. AU - Kay, Matthew J. AU - Cole, Patrick L. AU - Hunt, Ken K. T1 - Implications of the Logical Decode on the Radiation Response of a Multi-Level Cell NAND Flash Memory. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2013/12//Dec2013 Part 1 VL - 60 IS - 6 M3 - Article SP - 4451 EP - 4456 SN - 00189499 AB - The radiation response of a multi-level cell (MLC) NAND flash is used to determine the organization of logical states as they correspond to floating gate charge levels of constituent bit cell transistors. This “logical decode” is then used to demonstrate how an MLC device can be used to emulate a single-level cell (SLC) flash with total dose radiation sensitivity equivalent to and even surpassing that of a comparable actual SLC device. In addition, it is shown that the logical decode must be taken into account when performing radiation testing on MLC flash devices so as to gather accurate worst case response data. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLASH memories (Computers) KW - RESEARCH KW - IONIZING radiation -- Dosage KW - EFFECT of radiation on transistors KW - FIELD-effect transistors KW - GRAY codes KW - Flash memories KW - Flash memory KW - floating gate KW - heavy ion KW - Logic gates KW - multi-level cell (MLC) KW - Nonvolatile memory KW - Radiation effects KW - single-level cell (SLC) KW - total ionizing dose KW - x-ray KW - X-ray scattering N1 - Accession Number: 93280959; Ingalls, J. David 1 Gadlage, Matthew J. 1 Duncan, Adam R. 1 Kay, Matthew J. 1 Cole, Patrick L. 1 Hunt, Ken K. 2; Affiliation: 1: NSWC Crane, Crane, IN, USA 2: Air Force Research Laboratory (Retired), Albuquerque, NM, USA; Source Info: Dec2013 Part 1, Vol. 60 Issue 6, p4451; Subject Term: FLASH memories (Computers); Subject Term: RESEARCH; Subject Term: IONIZING radiation -- Dosage; Subject Term: EFFECT of radiation on transistors; Subject Term: FIELD-effect transistors; Subject Term: GRAY codes; Author-Supplied Keyword: Flash memories; Author-Supplied Keyword: Flash memory; Author-Supplied Keyword: floating gate; Author-Supplied Keyword: heavy ion; Author-Supplied Keyword: Logic gates; Author-Supplied Keyword: multi-level cell (MLC); Author-Supplied Keyword: Nonvolatile memory; Author-Supplied Keyword: Radiation effects; Author-Supplied Keyword: single-level cell (SLC); Author-Supplied Keyword: total ionizing dose; Author-Supplied Keyword: x-ray; Author-Supplied Keyword: X-ray scattering; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TNS.2013.2282699 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93280959&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hammack, Stephen AU - Kostka, Stanislav AU - Lynch, Amy AU - Carter, Campbell AU - Lee, Tonghun T1 - Simultaneous 10-kHz PLIF and Chemiluminescence Imaging of OH Radicals in a Microwave Plasma-Enhanced Flame. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2013/12//Dec2013 Part 1 VL - 41 IS - 12 M3 - Article SP - 3279 EP - 3286 SN - 00933813 AB - This paper examines the structure of microwave (MW)-enhanced flames through 10-kHz imaging. High repetition rate laser diagnostic methods are used to simultaneously record 2-D images of OH laser-induced fluorescence and chemiluminescence within an atmospheric plasma-enhanced flame. Collecting both OH planar laser-induced fluorescence and chemiluminescence allows for observation of OH radicals in the plane of the thin laser sheet as well as volume-integrated excited state emission. A tunable, MW waveguide plasma source—operating at 2.45 GHz and delivering 90–130 W to the flowfield—ignites and sustains a CH4/air flame, whereas laser-induced fluorescence and chemiluminescence are acquired at a sustained framing rate of 10 kHz, using two intensified CMOS cameras and a synchronized laser. Multiple geometries and flames (premixed and nonpremixed) are studied by adjusting gas flow compositions and the plasma applicator nozzle components. A stoichiometric premixed flame configuration produces a divergent flame with large-scale fluctuations and vortex shedding into ambient air and is capable of feedstock flow velocities >20~m/s for combustion-to-plasma power ratios >10:1. Another arrangement produces plasma along the initial mixing layer of a nonpremixed flame, yielding a thin cylindrical reaction zone of coincident chemiluminescence and fluorescence. Replacing the fuel with rich premixed gases produces a narrow conical flame anchored by the circular plasma discharge with a little flamefront fluctuation. The high-speed diagnostics capture OH signals in cinematic sequences, providing new understanding of the plasma-assisted flame holding mechanism and allowing for the tracking of individual flow feature development. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROXIDES KW - RADICALS (Chemistry) KW - CHEMILUMINESCENCE KW - MICROWAVE plasmas KW - GAS dynamics KW - Chemical lasers KW - Chemiluminescence KW - Electrodes KW - Fuels KW - high repetition rate diagnostics KW - laser diagnostics KW - Laser excitation KW - Measurement by laser beam KW - microwave plasma KW - planar laser-induced fluorescence (PLIF) KW - Plasma temperature KW - plasma-assisted combustion (PAC) N1 - Accession Number: 92943621; Hammack, Stephen 1 Kostka, Stanislav 2 Lynch, Amy 3 Carter, Campbell 3 Lee, Tonghun 1; Affiliation: 1: Department of Mechanical Engineering, Michigan State University, East Lansing, MI, USA 2: Pratt and Whitney, Combustor Aerothermal Group, East Hartford, CT, USA 3: Air Force Research Laboratory, Aerospace Systems Directorate, OH, USA; Source Info: Dec2013 Part 1, Vol. 41 Issue 12, p3279; Subject Term: HYDROXIDES; Subject Term: RADICALS (Chemistry); Subject Term: CHEMILUMINESCENCE; Subject Term: MICROWAVE plasmas; Subject Term: GAS dynamics; Author-Supplied Keyword: Chemical lasers; Author-Supplied Keyword: Chemiluminescence; Author-Supplied Keyword: Electrodes; Author-Supplied Keyword: Fuels; Author-Supplied Keyword: high repetition rate diagnostics; Author-Supplied Keyword: laser diagnostics; Author-Supplied Keyword: Laser excitation; Author-Supplied Keyword: Measurement by laser beam; Author-Supplied Keyword: microwave plasma; Author-Supplied Keyword: planar laser-induced fluorescence (PLIF); Author-Supplied Keyword: Plasma temperature; Author-Supplied Keyword: plasma-assisted combustion (PAC); Number of Pages: 8p; Document Type: Article L3 - 10.1109/TPS.2013.2280729 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92943621&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Shyam, Amit AU - Jha, Sushant K. AU - Caton, Michael J. T1 - Preface to special issue on fatigue and microstructure. JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2013/12// VL - 57 M3 - Editorial SP - 1 EP - 1 SN - 01421123 N1 - Accession Number: 90636392; Shyam, Amit 1 Jha, Sushant K. 2 Caton, Michael J. 3; Affiliation: 1: Oak Ridge National Laboratory, Oak Ridge, TN, USA 2: Universal Technology Corporation and Air Force Research Laboratory, Dayton, OH, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Dec2013, Vol. 57, p1; Number of Pages: 1p; Document Type: Editorial L3 - 10.1016/j.ijfatigue.2013.06.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90636392&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Przybyla, Craig P. AU - Musinski, William D. AU - Castelluccio, Gustavo M. AU - McDowell, David L. T1 - Microstructure-sensitive HCF and VHCF simulations. JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2013/12// VL - 57 M3 - Article SP - 9 EP - 27 SN - 01421123 AB - Abstract: This paper provides some background and historical review of how microstructure-sensitive finite element simulations can play a role in understanding the effects of stress amplitude, R-ratio, and microstructure on fatigue crack formation and early growth at notches, including pores and non-metallic inclusions for Ti alloys and Ni-base superalloys. The simulations employ fatigue indicator parameters (FIPs) computed over finite volumes that relate to processes of fatigue crack formation and early growth at the scale of individual grains. It is argued that both coarse scale (uncracked, mesoscale) and fine scale FIPs (computed in the vicinity of cracks in single grains or crystals) serve as a driving force for crystallographic fatigue crack growth, and correlate directly with the cyclic crack tip displacement (CTD). Furthermore, variability in high cycle fatigue (HCF) and very high cycle fatigue (VHCF) responses is computationally assessed using multiple statistical volume elements and the distribution of FIPs of extreme value character. The concepts of marked correlation functions and weighted probability density functions are reviewed as a means to quantify the role of multiple microstructure attributes that couple to enhance the extreme value FIPs in the HCF regime. An algorithm for estimation of the cumulative probability distribution of cycles for crack formation and growth from notches in HCF and VHCF is also described. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRACTURE mechanics KW - FINITE element method KW - STRAINS & stresses (Mechanics) KW - MATERIALS -- Fatigue KW - FATIGUE cracks KW - HEAT resistant alloys KW - MICROSTRUCTURE KW - Extreme value KW - Fatigue indicator parameters KW - High cycle fatigue KW - Microstructurally small cracks KW - Modeling and simulation N1 - Accession Number: 90636394; Przybyla, Craig P. 1 Musinski, William D. 1,2 Castelluccio, Gustavo M. 2 McDowell, David L. 2,3; Email Address: david.mcdowell@me.gatech.edu; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 2: Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405, USA 3: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405, USA; Source Info: Dec2013, Vol. 57, p9; Subject Term: FRACTURE mechanics; Subject Term: FINITE element method; Subject Term: STRAINS & stresses (Mechanics); Subject Term: MATERIALS -- Fatigue; Subject Term: FATIGUE cracks; Subject Term: HEAT resistant alloys; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: Extreme value; Author-Supplied Keyword: Fatigue indicator parameters; Author-Supplied Keyword: High cycle fatigue; Author-Supplied Keyword: Microstructurally small cracks; Author-Supplied Keyword: Modeling and simulation; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.ijfatigue.2012.09.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90636394&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Larsen, J.M. AU - Jha, S.K. AU - Szczepanski, C.J. AU - Caton, M.J. AU - John, R. AU - Rosenberger, A.H. AU - Buchanan, D.J. AU - Golden, P.J. AU - Jira, J.R. T1 - Reducing uncertainty in fatigue life limits of turbine engine alloys. JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2013/12// VL - 57 M3 - Article SP - 103 EP - 112 SN - 01421123 AB - Abstract: In probabilistic design of materials for fracture-critical components in modern military turbine engines, a typical maximum design target risk (DTR) is 5×10−8 component failures/engine flight hour. This metric underscores the essential role of safety in a design process that simultaneously strives to achieve performance, efficiency, reliability, and affordability throughout the life cycle of the engine. Traditionally, the design and life management approaches for engine materials have typically relied on extensive testing programs to produce large databases of fatigue data, from which statistically based life limits are derived by extrapolation from the mean fatigue behavior. However, we have found that the statistical behavior of fatigue lifetimes under a given test condition often exhibits a bimodal form, and that the trends in mean vs. minimum fatigue lifetime typically respond differently to loading or to microstructural variables. Under such circumstances, the underlying life-limiting mechanisms appear to exhibit a probabilistic microstructural hierarchy in fatigue resistance that is controlled by susceptibility of local microstructural neighborhoods to early damage and the growth of small cracks. These findings suggest that significant opportunities may exist for reductions in uncertainty in materials life-cycle prediction and management, if such hierarchies can be understood and controlled. This paper explores the potential implications of these findings, and a number of possible approaches are suggested for incorporating the insights of life-limiting fatigue into methods of integrated computational materials engineering (ICME) to support optimized life-cycle design of materials and components in turbine engines. Benefits of this approach appear to include substantial improvements in model accuracy, coupled with reduced requirements for materials testing, potentially leading to a significant reduction in the time and cost to develop, validate, transition, and implement new, more fatigue resistant alloys. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE life (Materials science) KW - TURBINES KW - FRACTURE mechanics KW - RELIABILITY (Engineering) KW - MATERIALS -- Fatigue KW - ENGINES KW - Damage tolerance KW - Fatigue design KW - Gas turbines KW - Microstructures KW - Probabilistic analysis N1 - Accession Number: 90636403; Larsen, J.M. 1; Email Address: james.larsen@wpafb.af.mil Jha, S.K. 2 Szczepanski, C.J. 1 Caton, M.J. 1 John, R. 1 Rosenberger, A.H. 1 Buchanan, D.J. 3 Golden, P.J. 1 Jira, J.R. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 2: Universal Technology Corporation, 1270 North Fairfield Rd., Dayton, OH 45432, USA 3: University of Dayton Research Institute (UDRI), Dayton, OH 45469, USA; Source Info: Dec2013, Vol. 57, p103; Subject Term: FATIGUE life (Materials science); Subject Term: TURBINES; Subject Term: FRACTURE mechanics; Subject Term: RELIABILITY (Engineering); Subject Term: MATERIALS -- Fatigue; Subject Term: ENGINES; Author-Supplied Keyword: Damage tolerance; Author-Supplied Keyword: Fatigue design; Author-Supplied Keyword: Gas turbines; Author-Supplied Keyword: Microstructures; Author-Supplied Keyword: Probabilistic analysis; NAICS/Industry Codes: 333618 Other Engine Equipment Manufacturing; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijfatigue.2013.01.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90636403&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Szczepanski, C.J. AU - Jha, S.K. AU - Shade, P.A. AU - Wheeler, R. AU - Larsen, J.M. T1 - Demonstration of an in situ microscale fatigue testing technique on a titanium alloy. JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2013/12// VL - 57 M3 - Article SP - 131 EP - 139 SN - 01421123 AB - Abstract: Under high cycle and very high cycle fatigue (HCF and VHCF) conditions, scatter in fatigue lifetimes is substantial; often 2–3 orders of magnitude. Characterization of fatigue crack initiation sites in laboratory scale fatigue specimens has led to the identification of characteristic initiation sites and microstructural arrangements. Despite these observations, in some cases, it is still unclear how apparently similar initiation sites exhibit such different total fatigue lifetimes. Differences in crack-initiation mechanisms can be further revealed if specific microstructural arrangements are isolated within a micro-specimen. Towards this end, an in situ microscale tension testing technique was adapted to enable microscale fatigue testing on tensile dog-bone specimens. Microscale tensile fatigue specimens with approximate gage diameters of 20μm were prepared with a focused ion beam (FIB) microscope. Initial tensile experiments were conducted to characterize the mechanical behavior of microscale specimens for this microstructure. The microscale tensile specimens were observed to exhibit reduced yield and flow stresses in comparison to bulk tensile specimens. However, in this feasibility demonstration of in situ microscale fatigue testing, microscale specimens exhibit enhanced fatigue properties relative to conventional specimens, which may result from the differences in strain rate and, potentially, the method of test control (load vs. displacement) between these two testing methods. Both tensile and fatigue specimens have been characterized with electron backscatter diffraction to identify the neighborhood and the specific slip systems that were activated under local deformation conditions within the microstructure. Both basal and prism slip were observed, although prism slip was more prevalent. Results of the tension and fatigue experiments are discussed in the context of the growing body of literature on microscale testing, and avenues for future work are highlighted. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - MATERIALS -- Fatigue KW - CRACK initiation (Fracture mechanics) KW - METALS -- Microstructure KW - TENSILE test (Materials) KW - FOCUSED ion beams KW - Electron backscatter diffraction (EBSD) KW - Fatigue test KW - Microscale mechanical testing KW - Titanium alloys N1 - Accession Number: 90636406; Szczepanski, C.J. 1; Email Address: christopher.szczepanski@wpafb.af.mil Jha, S.K. 2 Shade, P.A. 1 Wheeler, R. 3 Larsen, J.M. 1; Affiliation: 1: US Air Force Research Laboratory, AFRL/RX, Wright–Patterson AFB, OH 45433, United States 2: Universal Technology Corporation, Dayton, OH 45432, United States 3: UES, Inc., Dayton, OH, United States; Source Info: Dec2013, Vol. 57, p131; Subject Term: TITANIUM alloys; Subject Term: MATERIALS -- Fatigue; Subject Term: CRACK initiation (Fracture mechanics); Subject Term: METALS -- Microstructure; Subject Term: TENSILE test (Materials); Subject Term: FOCUSED ion beams; Author-Supplied Keyword: Electron backscatter diffraction (EBSD); Author-Supplied Keyword: Fatigue test; Author-Supplied Keyword: Microscale mechanical testing; Author-Supplied Keyword: Titanium alloys; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijfatigue.2012.08.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90636406&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Echchgadda, Ibtissam AU - Grundt, Jessica A. AU - Tarango, Melissa AU - Ibey, Bennett L. AU - Tongue, Thomas AU - Min Liang AU - Hao Xin AU - Wilmink, Gerald J. T1 - Using a portable terahertz spectrometer to measure the optical properties of in vivo human skin. JO - Journal of Biomedical Optics JF - Journal of Biomedical Optics Y1 - 2013/12// VL - 18 IS - 12 M3 - Article SP - 1 EP - 3 SN - 10833668 AB - Terahertz (THz) time-domain spectroscopy systems permit the measurement of a tissue's hydration level. This feature makes THz spectrometers excellent tools for the noninvasive assessment of skin; however, current systems are large, heavy and not ideal for clinical settings. We previously demonstrated that a portable, compact THz spectrometer permitted measurement of porcine skin optical properties that were comparable to those collected with conventional systems. In order to move toward human use of this system, the goal for this study was to measure the absorption coefficient (µa) and index of refraction (n) of human subjects in vivo. Spectra were collected from 0.1 to 2 THz, and measurements were made from skin at three sites: the palm, ventral and dorsal forearm. Additionally, we used a multiprobe adapter system to measure each subject's skin hydration levels, transepidermal water loss, and melanin concentration. Our results suggest that the measured optical properties varied considerably for skin tissues that exhibited dissimilar hydration levels. These data provide a framework for using compact THz spectrometers for clinical applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Biomedical Optics is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TERAHERTZ spectroscopy KW - RESEARCH KW - REFRACTIVE index KW - WIRELESS communication systems KW - SKIN -- Cancer KW - RADIATION KW - PHOTOCONDUCTIVE cells KW - applications KW - optical properties KW - terahertz KW - tissue N1 - Accession Number: 94829977; Echchgadda, Ibtissam 1,2 Grundt, Jessica A. 3 Tarango, Melissa 2 Ibey, Bennett L. 3 Tongue, Thomas 4 Min Liang 5 Hao Xin 5 Wilmink, Gerald J. 3; Email Address: gerald.j.wilmink.civ@mail.mil; Affiliation: 1: National Academy of Sciences, NRC Research Associateship, Washington DC 20001 2: General Dynamics Information Technology, Fort Sam Houston, Texas 78234 3: Air Force Research Laboratory, Radio Frequency Bioeffects Branch, Fort Sam Houston, Texas 78234 4: Zomega Terahertz Corporation, East Greenbush, New York 12061 5: University of Arizona, Electrical and Computer Engineering, Tucson, Arizona 85721; Source Info: Dec2013, Vol. 18 Issue 12, p1; Subject Term: TERAHERTZ spectroscopy; Subject Term: RESEARCH; Subject Term: REFRACTIVE index; Subject Term: WIRELESS communication systems; Subject Term: SKIN -- Cancer; Subject Term: RADIATION; Subject Term: PHOTOCONDUCTIVE cells; Author-Supplied Keyword: applications; Author-Supplied Keyword: optical properties; Author-Supplied Keyword: terahertz; Author-Supplied Keyword: tissue; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1117/1.JBO.18.12.120503 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94829977&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ranatunga, Vipul AU - Clay, Stephen B T1 - Cohesive modeling of damage growth in z-pinned laminates under mode-I loading. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2013/12// VL - 47 IS - 26 M3 - Article SP - 3269 EP - 3283 SN - 00219983 AB - In this paper, a traction-separation-based cohesive modeling approach is proposed to predict the effect of z-pinning on laminated composites. A detailed experimental characterization of the z-pin pullout process using the flatwise tension test is presented. Utilizing these flatwise tension results, numerical simulation of the progressive damage due to delaminations in a double cantilever beam with z-pinning has been performed. Experimental details of the z-pinned double cantilever beams are presented for IM7/977-3 graphite/epoxy. The approach taken in this study utilizing the cohesive elements within the Abaqus® finite element software has proven that the models can predict the behavior of z-pinned composites close to experimental observations. It was found that the discretization of the fracture resistance curve along the z-pin field is essential to capture the dynamics of the delamination accurately. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COHESIVE strength (Mechanics) KW - FRACTURE mechanics KW - CRYSTAL growth KW - LAMINATED materials KW - LOADS (Mechanics) KW - COMPOSITE materials -- Delamination KW - cohesive zone modeling KW - delamination KW - fracture KW - Z-pinning N1 - Accession Number: 92036463; Ranatunga, Vipul 1; Email Address: ranatupv@muohio.edu Clay, Stephen B 2; Affiliation: 1: Department of Engineering Technology, Miami University, Middletown, OH 45042, USA 2: Analytical Structural Mechanics Branch, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Dec2013, Vol. 47 Issue 26, p3269; Subject Term: COHESIVE strength (Mechanics); Subject Term: FRACTURE mechanics; Subject Term: CRYSTAL growth; Subject Term: LAMINATED materials; Subject Term: LOADS (Mechanics); Subject Term: COMPOSITE materials -- Delamination; Author-Supplied Keyword: cohesive zone modeling; Author-Supplied Keyword: delamination; Author-Supplied Keyword: fracture; Author-Supplied Keyword: Z-pinning; Number of Pages: 15p; Document Type: Article; Full Text Word Count: 5893 L3 - 10.1177/0021998312464078 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92036463&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jensen, Mark N. T1 - Hard Moral Choices in the Military. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2013/12// VL - 12 IS - 4 M3 - Article SP - 341 EP - 356 PB - Routledge SN - 15027570 AB - Integrating and building on the constitutional ethics paradigm proposed by Paul Roush and the neo-intuitionist moral decision-making scheme proposed by Robert Audi, I defend a novel decision-making procedure for hard moral choices in the military. The key to Roush's model of justifiable disobedience is a soldier's ability to recognize when an ostensibly legal order constitutes a ‘fundamental violation of justice’. However, the nature and structure of this act of moral recognition requires more elucidation than Roush has provided. In order to avoid grounding moral recognition and decision-making on a narrowly partisan account of moral theory (e.g. deontology or consequentialism), I appeal to Audi's neo-intuitionist account ofprima faciemoral duties. I then repurpose and develop further a decision procedure that Audi proposed for the business context. When faced with an ethical dilemma in military service, a soldier should (1) classify his/her obligations; (2) identify the conflicts between his/her obligations; (3) assess the weightiness of his/her obligations; (4) determine ethically viable options; and then (5) make a decision. I close the discussion with an examination of the practical problems one might face in adopting the proposal. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Military Ethics is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARMED Forces KW - MILITARY morale KW - DECISION making -- Moral & ethical aspects KW - ETHICAL intuitionism KW - MORAL & ethical aspects KW - Constitutional ethics paradigm KW - military dissent KW - military obedience KW - moral decision-making KW - moral dilemmas KW - neo-intuitionism KW - ROUSH, Paul KW - AUDI, Robert, 1941- N1 - Accession Number: 93799007; Jensen, Mark N. 1; Affiliation: 1: Department of Philosophy, United States Air Force Academy, Colorado Springs, CO, USA; Source Info: Dec2013, Vol. 12 Issue 4, p341; Subject Term: ARMED Forces; Subject Term: MILITARY morale; Subject Term: DECISION making -- Moral & ethical aspects; Subject Term: ETHICAL intuitionism; Subject Term: MORAL & ethical aspects; Author-Supplied Keyword: Constitutional ethics paradigm; Author-Supplied Keyword: military dissent; Author-Supplied Keyword: military obedience; Author-Supplied Keyword: moral decision-making; Author-Supplied Keyword: moral dilemmas; Author-Supplied Keyword: neo-intuitionism; People: ROUSH, Paul; People: AUDI, Robert, 1941-; Number of Pages: 16p; Document Type: Article L3 - 10.1080/15027570.2013.869897 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93799007&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, David H. AU - Riley, John K. AU - Fillery, Scott P. AU - Durstock, Michael F. AU - Vaia, Richard A. AU - Tan, Loon-Seng T1 - Synthesis and characterization of unsymmetrical benzonitrile-containing polyimides: Viscosity-lowering effect and dielectric properties. JO - Journal of Polymer Science Part A: Polymer Chemistry JF - Journal of Polymer Science Part A: Polymer Chemistry Y1 - 2013/12// VL - 51 IS - 23 M3 - Article SP - 4998 EP - 5011 SN - 0887624X AB - ABSTRACT A new unsymmetrical diamine, 2-(3-aminophenoxy)-6-(4-aminophenoxy)benzonitrile (3,4-APBN), is synthesized via two consecutive SNAr reactions and the temperature-dependent reactivity of the fluorides in 2,6-difluorobenzonitrile, whose first SNAr reaction occurs at 70 °C and second, at 100 °C, allowing timing control of reaction sequence and circumventing the transetherification side reaction. Thus, a series of polyimides (PIs) is prepared from the polymerization of 3,4-APBN with five common dianhydrides (6FDA, DSDA, OPDA, BTDA, and PMDA). For comparison, a second series is also prepared from two symmetrical diamines ([2,6-bis(3-aminophenoxy)benzonitrile (3,3-APBN) and 2,6-bis(4-aminophenoxy)benzonitrile (4,4-APBN)] and 6FDA or PMDA. The processability of the poly(amic acids) (PAAs), for the first series is greatly improved since their solution viscosities are much lower than PAAs based on symmetrical diamines. Besides having high glass-transition temperatures (249-332 °C), and thermal stability [5% weight loss in the range of 505-542 °C (air) and 512-546 °C (nitrogen)], these PIs form tough, transparent and flexible films that have a tensile-strength range of 82.1-121.3 MPa, elongations-at-break of 5.33-9.81%, and tensile moduli of 2.11-2.97 GPa. Their film dielectric constants are 3.08-3.62 at 10 kHz, moderately higher than that (2.92) of analogous PI (CP2) without nitrile groups. Overall, we found that the reduction of structural symmetry in repeat units can improve the polymer processibility as well as increasing their dielectric constants. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013, 51, 4998-5011 [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Polymer Science Part A: Polymer Chemistry is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BENZONITRILE KW - RESEARCH KW - SYNTHESIS (Chemistry) KW - FLUORIDES KW - POLYIMIDES KW - POLYMERIZATION KW - ANHYDRIDES KW - DIAMINES KW - VISCOSITY KW - benzonitrile KW - dielectric properties KW - polyimides KW - transetherification KW - unsymmetrical diamine KW - viscosity N1 - Accession Number: 91615130; Wang, David H. 1,2 Riley, John K. 1,2 Fillery, Scott P. 1,3 Durstock, Michael F. 1 Vaia, Richard A. 1 Tan, Loon-Seng 1; Affiliation: 1: Materials and Manufacturing Directorate, AFRL/RXAS, Air Force Research Laboratory 2: UES, Inc. 3: National Research Council; Source Info: Dec2013, Vol. 51 Issue 23, p4998; Subject Term: BENZONITRILE; Subject Term: RESEARCH; Subject Term: SYNTHESIS (Chemistry); Subject Term: FLUORIDES; Subject Term: POLYIMIDES; Subject Term: POLYMERIZATION; Subject Term: ANHYDRIDES; Subject Term: DIAMINES; Subject Term: VISCOSITY; Author-Supplied Keyword: benzonitrile; Author-Supplied Keyword: dielectric properties; Author-Supplied Keyword: polyimides; Author-Supplied Keyword: transetherification; Author-Supplied Keyword: unsymmetrical diamine; Author-Supplied Keyword: viscosity; Number of Pages: 15p; Document Type: Article L3 - 10.1002/pola.26927 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91615130&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Park, Joon S. AU - Chandramohan, Pratheep AU - Suresh, Avinash T. AU - Giordano, Joseph V. AU - Kwiat, Kevin A. T1 - Component survivability at runtime for mission-critical distributed systems. JO - Journal of Supercomputing JF - Journal of Supercomputing Y1 - 2013/12// VL - 66 IS - 3 M3 - Article SP - 1390 EP - 1417 PB - Springer Science & Business Media B.V. SN - 09208542 AB - As information systems develop into larger and more complex implementations, the need for survivability in mission-critical systems is pressing. Furthermore, the requirement for protecting information systems becomes increasingly vital, while new threats are identified each day. It becomes more challenging to build systems that will detect such threats and recover from the damage. This is particularly critical for distributed mission-critical systems, which cannot afford a letdown in functionality even though there are internal component failures or compromises with malicious codes, especially in a downloaded component from an external source. Therefore, when using such a component, we should check to see if the source of the component is trusted and that the code has not been modified in an unauthorized manner since it was created. Furthermore, once we find failures or malicious codes in the component, we should fix those problems and continue the original functionality of the component at runtime so that we can support survivability in the mission-critical system. In this paper, we define our definition of survivability, discuss the survivability challenges in component-sharing in a large distributed system, identify the static and dynamic survivability models, and discuss their trade-offs. Consequently, we propose novel approaches for component survivability. Finally, we prove the feasibility of our ideas by implementing component recovery against internal failures and malicious codes based on the dynamic model. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Supercomputing is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RUN time systems (Computer science) KW - INFORMATION storage & retrieval systems KW - COMPUTATIONAL complexity KW - SYSTEM identification KW - CODING theory KW - DATA security KW - Component survivability KW - Dynamic recovery KW - Runtime test KW - Security N1 - Accession Number: 91897125; Park, Joon S. 1; Email Address: jspark@syr.edu Chandramohan, Pratheep 1; Email Address: pchandra@syr.edu Suresh, Avinash T. 1; Email Address: atsuresh@syr.edu Giordano, Joseph V. 2; Email Address: jgiorda@utica.edu Kwiat, Kevin A. 3; Email Address: kwiatk@rl.af.mil; Affiliation: 1: Syracuse University, Syracuse, NY, USA 2: Utica College, Utica, NY, USA 3: The US Air Force Research Laboratory (AFRL), Rome, NY, USA; Source Info: Dec2013, Vol. 66 Issue 3, p1390; Subject Term: RUN time systems (Computer science); Subject Term: INFORMATION storage & retrieval systems; Subject Term: COMPUTATIONAL complexity; Subject Term: SYSTEM identification; Subject Term: CODING theory; Subject Term: DATA security; Author-Supplied Keyword: Component survivability; Author-Supplied Keyword: Dynamic recovery; Author-Supplied Keyword: Runtime test; Author-Supplied Keyword: Security; NAICS/Industry Codes: 541519 Other Computer Related Services; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); Number of Pages: 28p; Document Type: Article L3 - 10.1007/s11227-012-0818-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91897125&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harris, Daniel C. AU - Cambrea, Lee R. AU - Johnson, Linda F. AU - Seaver, Robert T. AU - Baronowski, Meghan AU - Gentilman, Richard AU - Scott Nordahl, C. AU - Gattuso, Todd AU - Silberstein, Stephanie AU - Rogan, Patrick AU - Hartnett, Thomas AU - Zelinski, Brian AU - Sunne, Wayne AU - Fest, Eric AU - Howard Poisl, W. AU - Willingham, Charles B. AU - Turri, Giorgio AU - Warren, Cori AU - Bass, Michael AU - Zelmon, David E. T1 - Properties of an Infrared-Transparent MgO: Y2 O3 Nanocomposite. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2013/12// VL - 96 IS - 12 M3 - Article SP - 3828 EP - 3835 PB - Wiley-Blackwell SN - 00027820 AB - A 50:50 vol% MgO- Y2 O3 nanocomposite with ~150 nm grain size was prepared in an attempt to make 3-5 μm infrared-transmitting windows with increased durability and thermal shock resistance. Flexure strength of the composite at 21°C is 679 MPa for 0.88 cm2 under load. Hardness is consistent with that of the constituents with similar grain size. For 3-mm-thick material at 4.85 μm, the total scatter loss is 1.5%, forward scatter is 0.2%, and absorptance is 1.8%. Optical scatter below 2 μm is 100%. Variable intensity OH absorption (~6% absorptance) is observed near 3 μm. The refractive index is ~0.4% below the volume-fraction-weighted average of those of the constituents. Thermal expansion is equal to the volume-fraction-weighted average of expansion of the constituents. Specific heat capacity is equal to the mass-fraction-weighted average of heat capacities of the constituents. Thermal conductivity lies between those of the constituents up to 1200 K. Elastic constants lie between those of the constituents. The Hasselman mild thermal shock resistance parameter for the composite is twice as great as that of common 3-5 μm window materials, but half as great as that of c-plane sapphire. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNESIUM oxide -- Spectra KW - NANOCOMPOSITE materials -- Spectra KW - THERMAL shock KW - THERMAL conductivity KW - THERMAL expansion N1 - Accession Number: 92866418; Harris, Daniel C. 1 Cambrea, Lee R. 1 Johnson, Linda F. 1 Seaver, Robert T. 1 Baronowski, Meghan 1 Gentilman, Richard 2 Scott Nordahl, C. 2 Gattuso, Todd 2 Silberstein, Stephanie 2 Rogan, Patrick 2 Hartnett, Thomas 2 Zelinski, Brian 3 Sunne, Wayne 3 Fest, Eric 3 Howard Poisl, W. 3 Willingham, Charles B. 4 Turri, Giorgio 5 Warren, Cori 6 Bass, Michael 7 Zelmon, David E. 8; Affiliation: 1: Weapons Division, Naval Air Warfare Center 2: Integrated Defense Systems, Raytheon 3: Missile Systems, Raytheon 4: CBW TechServices 5: Department of Chemistry and Physics, Florida Southern College 6: Rollins College 7: CREOL, The College of Optics and Photonics, University of Central Florida 8: US Air Force Research Laboratory, Wright Patterson AFB; Source Info: Dec2013, Vol. 96 Issue 12, p3828; Subject Term: MAGNESIUM oxide -- Spectra; Subject Term: NANOCOMPOSITE materials -- Spectra; Subject Term: THERMAL shock; Subject Term: THERMAL conductivity; Subject Term: THERMAL expansion; Number of Pages: 8p; Illustrations: 1 Black and White Photograph, 8 Charts, 6 Graphs; Document Type: Article L3 - 10.1111/jace.12589 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92866418&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Matougui, N. AU - Piot, D. AU - Fares, M.L. AU - Montheillet, F. AU - Semiatin, S.L. T1 - Influence of niobium solutes on the mechanical behavior of nickel during hot working. JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2013/12// VL - 586 M3 - Article SP - 350 EP - 357 SN - 09215093 AB - Abstract: An experimental program was performed to determine the rheology and influence of niobium additions to high-purity nickel on dynamic-recrystallization behavior during hot working. Various high-purity alloys were prepared (pure Ni and Ni–0.01, 0.1, 1, 2, 5 and 10wt% Nb) and deformed to high strains by hot torsion to characterize the mechanical behavior within the temperature range from 800 to 1000°C at (von Mises equivalent) strain rates of 0.03, 0.1 and 0.3s−1. A simple analytical method was proposed for predicting the strain-hardening and dynamic-recovery parameters in the classical Yoshie–Laasraoui–Jonas equation. By the means, the effect of niobium solutes on plastic flow was determined, thus enabling a reasonable fit for the flow curves for the entire range of solid solution Ni–Nb alloys. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NIOBIUM KW - METALS -- Mechanical properties KW - NICKEL alloys KW - METALS -- Hot working KW - RECRYSTALLIZATION (Metallurgy) KW - TEMPERATURE effect KW - SOLID solutions KW - Dynamic recrystallization KW - Mechanical characterization KW - Nickel based superalloys KW - Thermomechanical processing N1 - Accession Number: 90524440; Matougui, N. 1,2; Email Address: NedjouaMAATOUGUI@yahoo.fr Piot, D. 1; Email Address: David.PIOT@Mines-StEtienne.fr Fares, M.L. 2; Email Address: FARES.Lamine@Univ-Annaba.org Montheillet, F. 1; Email Address: Frank.MONTHEILLET@Mines-StEtienne.fr Semiatin, S.L. 3; Email Address: Lee.SEMIATIN@WPAFB.AF.mil; Affiliation: 1: École nationale supérieure des mines de Saint-Étienne (ENSMSE), Laboratoire Georges Friedel UMR CNRS 5307, Centre for Materials Science and Mechanical Engineering (SMS Centre), RMT Department, 158 cours Fauriel, F–42023 ST ETIENNE CEDEX 2, France 2: Mechanics of Materials and Plant Maintenance Research Laboratory (LR3MI), Badji-Mokhtar-Annaba University, P.O. Box 12, 23000 Annaba, Algeria 3: Air Force Research Laboratory, AFRL/RX, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Dec2013, Vol. 586, p350; Subject Term: NIOBIUM; Subject Term: METALS -- Mechanical properties; Subject Term: NICKEL alloys; Subject Term: METALS -- Hot working; Subject Term: RECRYSTALLIZATION (Metallurgy); Subject Term: TEMPERATURE effect; Subject Term: SOLID solutions; Author-Supplied Keyword: Dynamic recrystallization; Author-Supplied Keyword: Mechanical characterization; Author-Supplied Keyword: Nickel based superalloys; Author-Supplied Keyword: Thermomechanical processing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.msea.2013.07.079 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90524440&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cliver, Edward W. T1 - Solar physics: Making waves. JO - Nature Physics JF - Nature Physics Y1 - 2013/12// VL - 9 IS - 12 M3 - Article SP - 758 EP - 759 SN - 17452473 AB - The article reports on investigation on the process of particle acceleration at solar shock waves by linking the high-cadence images. It mentions coronal mass ejection (CME) drive a quasiperpendicular solar shock wave and accelerates the coronal and interplanetary electrons. It also notes that CME is an erupting bubble of magnetized plasma on the sun surface which is recorded by Solar and Heliospheric Observatory (SOHO) spacecraft. KW - PARTICLE acceleration KW - SHOCK waves KW - RESEARCH KW - CORONAL mass ejections KW - SOLAR wind KW - SOLAR system KW - SOHO (Artificial satellite) N1 - Accession Number: 92676717; Cliver, Edward W. 1; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Sunspot, New Mexico 88349, USA; Source Info: Dec2013, Vol. 9 Issue 12, p758; Subject Term: PARTICLE acceleration; Subject Term: SHOCK waves; Subject Term: RESEARCH; Subject Term: CORONAL mass ejections; Subject Term: SOLAR wind; Subject Term: SOLAR system; Company/Entity: SOHO (Artificial satellite); Number of Pages: 2p; Document Type: Article L3 - 10.1038/nphys2787 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92676717&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Combs, Zachary A. AU - Malak, Sidney T. AU - König, Tobias AU - Mahmoud, Mahmoud A. AU - Chávez, Jorge L. AU - El-Sayed, Mostafa A. AU - Kelley-Loughnane, Nancy AU - Tsukruk, Vladimir V. T1 - Aptamer-Assisted Assembly of Gold Nanoframe Dimers. JO - Particle & Particle Systems Characterization JF - Particle & Particle Systems Characterization Y1 - 2013/12// VL - 30 IS - 12 M3 - Article SP - 1071 EP - 1078 SN - 09340866 AB - The assembly of nanoframe dimers assisted by aptamer-functionalized smaller spherical gold nanoparticles as prospective surface-enhanced Raman scattering (SERS) biotraps for riboflavin, an important molecule for biological electron transfer reactions, is reported. In this approach, the aptamer-coated gold nanoparticles designed for selective binding of riboflavin also serve as the electrostatic driver for nanoframe dimerization in dilute solutions. The gold nanoframe dimers provide unique conditions for plasmonic coupling in a hot spot with sufficient space for the binding of bulky biomolecules. The use of an aptamer allows for highly selective binding of the targeted analyte as compared with conventional organic ligands with excellent low detection limit of one micromole of riboflavin. [ABSTRACT FROM AUTHOR] AB - Copyright of Particle & Particle Systems Characterization is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - APTAMERS KW - DIMERS KW - GOLD nanoparticles KW - SERS spectroscopy KW - VITAMIN B2 KW - aptamers KW - gold nanoframes KW - riboflavin biodetection KW - surface-enhanced Raman scattering N1 - Accession Number: 92886868; Combs, Zachary A. 1 Malak, Sidney T. 1 König, Tobias 1 Mahmoud, Mahmoud A. 2 Chávez, Jorge L. 3 El-Sayed, Mostafa A. 2 Kelley-Loughnane, Nancy 3 Tsukruk, Vladimir V. 1; Affiliation: 1: School of Materials Science and Engineering, Georgia Institute of Technology 2: School of Chemistry and Biochemistry, Georgia Institute of Technology 3: 711th Human Performance Wing, Human Effectiveness Directorate, Air Force Research Laboratory; Source Info: Dec2013, Vol. 30 Issue 12, p1071; Subject Term: APTAMERS; Subject Term: DIMERS; Subject Term: GOLD nanoparticles; Subject Term: SERS spectroscopy; Subject Term: VITAMIN B2; Author-Supplied Keyword: aptamers; Author-Supplied Keyword: gold nanoframes; Author-Supplied Keyword: riboflavin biodetection; Author-Supplied Keyword: surface-enhanced Raman scattering; Number of Pages: 8p; Document Type: Article L3 - 10.1002/ppsc.201300187 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92886868&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Viggiano, Albert A. AU - Fabrikant, Ilya I. T1 - Thermal electron attachment to F2. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2013/12// VL - 88 IS - 6-A M3 - Article SP - 062708-1 EP - 062708-6 SN - 10502947 AB - Rate constants have been measured from 300 to 700 K for thermal electron attachment to F2 using two flowing afterglow-Langmuir probe apparatuses. Dissociative attachment yielding F- is observed with a rate constant of 5.0 ± 1.3 × 10-9 cm3 s-1 at 300 K, rising to 9.6 ± 2.4 × 10-9 cm3 s-1 at 700 K, well below the previously accepted values of McCorkle et al. [D. L. McCorkle, L. G. Christophorou, A. A. Christodoulides, and L. Pichiarella, J. Chem. Phys. 85, 1966 (1986)]. The absolute concentration of F2 reaching the afterglow is verified by measuring the near-collisional rate constant (4.5 ± 1.5 × 10-10 cm3 s-1) for Ar+ + F2→ArF+ + F Prior attempts to apply R-matrix calculations to the F2 + e- system have failed to explain previously reported thermal and nonthermal attachment rate constants along with high-resolution, low-energy attachment cross sections. The present results are reproduced exceptionally well by R-matrix calculations employing previously calculated resonance widths without adjustment. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL electrons KW - LANGMUIR probes KW - PLASMA probes KW - CROSS sections (Nuclear physics) KW - RESONANCE N1 - Accession Number: 93981282; Shuman, Nicholas S. 1 Miller, Thomas M. 1 Viggiano, Albert A. 1; Email Address: rvborgmailbox@kirtland.af.mil Fabrikant, Ilya I. 2; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117, USA 2: Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588-0299, USA; Source Info: Dec2013, Vol. 88 Issue 6-A, p062708-1; Subject Term: THERMAL electrons; Subject Term: LANGMUIR probes; Subject Term: PLASMA probes; Subject Term: CROSS sections (Nuclear physics); Subject Term: RESONANCE; Number of Pages: 6p; Document Type: Article L3 - 10.1103/PhysRevA.88.062708 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93981282&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lorenz, Alexander AU - Agra-Kooijman, Deña M. AU - Zimmermann, Natalie AU - Kitzerow, Heinz-S. AU - Evans, Dean R. AU - Kumar, Satyendra T1 - Bilayers in nanoparticle-doped polar mesogens. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2013/12// VL - 88 IS - 6-A M3 - Article SP - 1 EP - 7 SN - 15393755 AB - Structures of the mesophases of five members of the 4-n-alkyl-4'-cyanobiphenyl homologous series (4-n-butyl-4'-cyanobiphenyl to 4-n-octyl-4'-cyanobiphenyl) doped with milled BaTi03 nanoparticles were investigated by x-ray scattering. Clear solutions of each of the 4-n-alkyl-4'-cyanobiphenyls were first prepared in «-heptane and then doped with an n-heptane/nanoparticle dispersion, which led to gelation. The nanogels were found to be one-dimensional, multilayered, smectic nanostructures in each case. Surprisingly, a characteristic layer spacing of 4.5 nm was observed in all five homologues. Synchrotron x-ray scattering study of the multilayer structures of doped 4-n-pentyl-4'-cyanobiphenyl and 4-n-octyl-4'-cyanobiphenyl revealed nine orders of the primary Bragg reflection which were used to calculate the electron density profiles of the multilayers by Fourier analysis. The multilayers were found to consist of molecular bilayers wherein the mesogens were arranged in a head-to-head assembly of the polar head groups. The alkyl tails of the mesogenic molecules were freely movable and the tail-to-tail assembly was stabilized by heptane. The dissolved nanoparticles clearly induced a new self-assembled nanos-tructure in which the rigid aromatic part, and not the overall length, of the molecules defined the layer spacing. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - MESOGENS KW - BILAYERS (Solid state physics) KW - X-ray scattering KW - BRAGG gratings KW - ELECTRON density N1 - Accession Number: 94257542; Lorenz, Alexander 1 Agra-Kooijman, Deña M. 2 Zimmermann, Natalie 3 Kitzerow, Heinz-S. 3 Evans, Dean R. 4 Kumar, Satyendra 2; Affiliation: 1: Department of Engineering, University of Cambridge, 9 JJ Thompson Avenue, CB3 OFA Cambridge, United Kingdom 2: Department of Physics, Kent State University, Kent, Ohio 44242, USA 3: Department of Chemistry, University of Paderborn, Warburger Strasse 100, 33098 Paderborn, Germany 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: Dec2013, Vol. 88 Issue 6-A, p1; Subject Term: NANOPARTICLES; Subject Term: MESOGENS; Subject Term: BILAYERS (Solid state physics); Subject Term: X-ray scattering; Subject Term: BRAGG gratings; Subject Term: ELECTRON density; Number of Pages: 7p; Document Type: Article L3 - 10.1103/PhysRevE.88.062505 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94257542&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Josyula, Eswar AU - Suchyta, Casimir J. AU - Boyd, Iain D. AU - Vedula, Prakash T1 - Internal energy relaxation in shock wave structure. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2013/12// VL - 25 IS - 12 M3 - Article SP - 126102 PB - American Institute of Physics SN - 10706631 AB - The Wang Chang-Uhlenbeck (WCU) equation is numerically integrated to characterize the internal structure of Mach 3 and Mach 5 shock waves in a gas with excitation in the internal energy states for the treatment of inelastic collisions. Elastic collisions are modeled with the hard sphere collision model and the transition rates for the inelastic collisions modified appropriately using probabilities based on relative velocities of the colliding particles. The collision integral is evaluated by the conservative discrete ordinate method [F. Tcheremissine, 'Solution of the Boltzmann kinetic equation for high-speed flows,' Comput. Math. Math. Phys. 46, 315-329 (2006); F. Cheremisin, 'Solution of the Wang Chang-Uhlenbeck equation,' Dokl. Phys. 47, 487-490 (2002)] developed for the Boltzmann equation. For the treatment of the diatomic molecules, the internal energy modes in the Boltzmann equation are described quantum mechanically given by the WCU equation. As a first step in the treatment of the inelastic collisions by the WCU equation, a two- and three-quantum system is considered to study the effect of the varying of (1) the inelastic cross section and (2) the energy gap between the quantum energy states. An alternative method, the direct simulation Monte Carlo method, is used for the Mach 3 shock wave to ensure the consistency of implementation in the two methods and there is an excellent agreement between the two methods. The results from the WCU implementation showed consistent trends for the Mach 3 and Mach5 standing shock waves simulations. Inelastic contributions change the downstream equilibrium state and allow the flow to transition to the equilibrium state further upstream. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FORCE & energy KW - SHOCK waves KW - NUMERICAL analysis KW - ELASTIC scattering KW - PROBABILITY theory KW - BOLTZMANN'S equation N1 - Accession Number: 93390946; Josyula, Eswar 1 Suchyta, Casimir J. 1 Boyd, Iain D. 2 Vedula, Prakash 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 2: University of Michigan, Ann Arbor, Michigan 48109, 3: University of Oklahoma, Norman, Oklahoma 73019,; Source Info: Dec2013, Vol. 25 Issue 12, p126102; Subject Term: FORCE & energy; Subject Term: SHOCK waves; Subject Term: NUMERICAL analysis; Subject Term: ELASTIC scattering; Subject Term: PROBABILITY theory; Subject Term: BOLTZMANN'S equation; Number of Pages: 19p; Illustrations: 2 Charts, 15 Graphs; Document Type: Article L3 - 10.1063/1.4837275 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93390946&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Le, Hai P. AU - Karagozian, Ann R. AU - Cambier, Jean-Luc T1 - Complexity reduction of collisional-radiative kinetics for atomic plasma. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2013/12// VL - 20 IS - 12 M3 - Article SP - 123304 PB - American Institute of Physics SN - 1070664X AB - Thermal non-equilibrium processes in partially ionized plasmas can be most accurately modeled by collisional-radiative kinetics. This level of detail is required for an accurate prediction of the plasma. However, the resultant system of equations can be prohibitively large, making multi-dimensional and unsteady simulations of non-equilibrium radiating plasma particularly challenging. In this paper, we present a scheme for model reduction of the collisional-radiative kinetics, by combining energy levels into groups and deriving the corresponding macroscopic rates for all transitions. Although level-grouping is a standard approach to this type of problem, we provide here a mechanism for achieving higher-order accuracy by accounting for the level distribution within a group. The accuracy and benefits of the scheme are demonstrated for the generic case of atomic hydrogen by comparison with the complete solution of the master rate equations and other methods. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL analysis KW - COMPUTATIONAL complexity KW - NONEQUILIBRIUM plasmas KW - PLASMA (Ionized gases) KW - PREDICTION models KW - UNSTEADY flow (Fluid dynamics) KW - COMPUTER simulation N1 - Accession Number: 93390969; Le, Hai P. 1 Karagozian, Ann R. 2 Cambier, Jean-Luc 3; Affiliation: 1: ERC Inc., Edwards AFB, California 93524, 2: Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, California 90095, 3: Air Force Research Laboratory, Edwards AFB, California 93524,; Source Info: Dec2013, Vol. 20 Issue 12, p123304; Subject Term: THERMAL analysis; Subject Term: COMPUTATIONAL complexity; Subject Term: NONEQUILIBRIUM plasmas; Subject Term: PLASMA (Ionized gases); Subject Term: PREDICTION models; Subject Term: UNSTEADY flow (Fluid dynamics); Subject Term: COMPUTER simulation; Number of Pages: 18p; Illustrations: 3 Charts, 15 Graphs; Document Type: Article L3 - 10.1063/1.4849417 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93390969&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chang, Sung-Jae AU - Cheralathan, Muthupandian AU - Bawedin, Maryline AU - Iniguez, Benjamin AU - Bayraktaroglu, Burhan AU - Lee, Jong-Hyun AU - Lee, Jung-Hee AU - Cristoloveanu, Sorin T1 - Mobility behavior and models for fully depleted nanocrystalline ZnO thin film transistors. JO - Solid-State Electronics JF - Solid-State Electronics Y1 - 2013/12// VL - 90 M3 - Article SP - 134 EP - 142 SN - 00381101 AB - Abstract: Transport mechanisms in nanocrystalline ZnO Thin Film Transistors (TFT) were investigated in a wide temperature range. The channel is located at the ZnO–SiO2 interface and controlled with a bottom gate as in a back-channel SOI MOSFET. In this work, we propose suitable mobility models that are able to provide a good agreement with the experimental results. Not only do these models account for the regular carrier transport mechanisms but they also address the physical properties of nanocrystalline ZnO films including the effect of grain boundaries. Simple parameter extraction techniques are explored and validated with numerical calculations. Our work highlights that nanocrystalline ZnO TFT provides high mobility, low threshold voltage and reasonable subthreshold swing due to good interface quality between the ZnO film and the gate insulator. The variation of these parameters at low temperature is measured and compared to the typical behavior in SOI MOSFETs. [Copyright &y& Elsevier] AB - Copyright of Solid-State Electronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN film transistors KW - ZINC oxide films KW - ELECTRON mobility KW - NANOCRYSTALS KW - CRYSTAL grain boundaries KW - PARAMETER estimation KW - Mobility KW - Nanocrystalline KW - Parameter extraction KW - TFTs KW - ZnO N1 - Accession Number: 91867253; Chang, Sung-Jae 1; Email Address: changs@minatec.inpg.fr Cheralathan, Muthupandian 2 Bawedin, Maryline 3 Iniguez, Benjamin 2 Bayraktaroglu, Burhan 4 Lee, Jong-Hyun 5 Lee, Jung-Hee 5 Cristoloveanu, Sorin 1; Affiliation: 1: IMEP-LAHC, Grenoble INP, Minatec, BP 256, 38016 Grenoble Cedex 1, France 2: Universitat Rovira i Virgili, Tarragona, Spain 3: IES, Montpellier University, France 4: Air Force Research Laboratory, AFRL/RYD, OH 454333, USA 5: Kyungpook National University, Daegu, Republic of Korea; Source Info: Dec2013, Vol. 90, p134; Subject Term: THIN film transistors; Subject Term: ZINC oxide films; Subject Term: ELECTRON mobility; Subject Term: NANOCRYSTALS; Subject Term: CRYSTAL grain boundaries; Subject Term: PARAMETER estimation; Author-Supplied Keyword: Mobility; Author-Supplied Keyword: Nanocrystalline; Author-Supplied Keyword: Parameter extraction; Author-Supplied Keyword: TFTs; Author-Supplied Keyword: ZnO; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.sse.2013.02.040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91867253&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Howard, T. A. AU - Bisi, M. M. AU - Buffington, A. AU - Clover, J. M. AU - Cooke, M. P. AU - Eyles, C. J. AU - Hick, P. P. AU - Holladay, P. E. AU - Jackson, B. V. AU - Johnston, J. C. AU - Kahler, S. W. AU - Kuchar, T. A. AU - Mizuno, D. R. AU - Penny, A. J. AU - Price, S. D. AU - Radick, R. R. AU - Simnett, G. M. AU - Tappin, S. J. AU - Waltham, N. R. AU - Webb, D. F. T1 - The Solar Mass Ejection Imager and Its Heliospheric Imaging Legacy. JO - Space Science Reviews JF - Space Science Reviews Y1 - 2013/12// VL - 180 IS - 1-4 M3 - Article SP - 1 EP - 38 PB - Springer Science & Business Media B.V. SN - 00386308 AB - The Solar Mass Ejection Imager (SMEI) was the first of a new class of heliospheric and astronomical white-light imager. A heliospheric imager operates in a fashion similar to coronagraphs, in that it observes solar photospheric white light that has been Thomson scattered by free electrons in the solar wind plasma. Compared with traditional coronagraphs, this imager differs in that it observes at much larger angles from the Sun. This in turn requires a much higher sensitivity and wider dynamic range for the measured intensity. SMEI was launched on the Coriolis spacecraft in January 2003 and was deactivated in September 2011, thus operating almost continuously for nearly nine years. Its primary objective was the observation of interplanetary transients, typically coronal mass ejections (CMEs), and tracking them continuously throughout the inner heliosphere. Towards this goal it was immediately effective, observing and tracking several CMEs in the first month of mission operations, with some 400 detections to follow. Along with this primary science objective, SMEI also contributed to many and varied scientific fields, including studies of corotating interaction regions (CIRs), the high-altitude aurora, zodiacal light, Gegenschein, comet tail disconnections and motions, and variable stars. It was also able to detect and track Earth-orbiting satellites and space debris. Along with its scientific advancements, SMEI also demonstrated a significantly improved accuracy of space weather prediction, thereby establishing the feasibility and usefulness of operational heliospheric imagers. In this paper we review the scientific and operational achievements of SMEI, discuss lessons learned, and present our view of potential next steps in future heliospheric imaging. [ABSTRACT FROM AUTHOR] AB - Copyright of Space Science Reviews is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HELIOSPHERE (Astrophysics) KW - IMAGING systems KW - CORONAGRAPHS KW - THOMSON scattering KW - SOLAR wind KW - INTERPLANETARY medium KW - OUTER space KW - EXPLORATION KW - Comets KW - Coronal mass ejections KW - Corotating interaction regions KW - Gegenschein KW - Heliospheric imaging KW - High-altitude aurora KW - Instrumentation KW - Interplanetary medium KW - Solar-terrestrial relations KW - Space weather forecasting KW - Variable stars KW - Zodiacal light N1 - Accession Number: 92629772; Howard, T. A. 1; Email Address: howard@boulder.swri.edu Bisi, M. M. 2 Buffington, A. 3 Clover, J. M. 3 Cooke, M. P. 4 Eyles, C. J. 4,5,6 Hick, P. P. 3 Holladay, P. E. 7 Jackson, B. V. 3 Johnston, J. C. 8 Kahler, S. W. 9 Kuchar, T. A. 10 Mizuno, D. R. 10 Penny, A. J. 11 Price, S. D. 10 Radick, R. R. 12 Simnett, G. M. 4 Tappin, S. J. 13 Waltham, N. R. 5 Webb, D. F. 10; Affiliation: 1: Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO, 80302, USA 2: Institute of Mathematical and Physical Sciences, Aberystwyth University, Ceredigion, SY23 3BZ, UK 3: Center for Astrophysics and Space Sciences, University of California, San Diego, CA, 92093-0424, USA 4: School of Physics and Astronomy, University of Birmingham, Edgbaston, B15 2TT, UK 5: RAL Space, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, UK 6: Laboratorio de Procesado de Imagenes, Universidad de Valencia, 46071, Valencia, Spain 7: Rust Street, Hamilton, MA, 01982, USA 8: 44th Street, Newbury, MA, 01951, USA 9: Air Force Research Laboratory, Kirtland AF Base, Albuquerque, NM, 87117, USA 10: Institute for Scientific Research, Boston College, Newton, MA, 02459, USA 11: SUPA, School of Physics and Astronomy, University of St. Andrews, St. Andrews, KY16 9SS, UK 12: Air Force Research Laboratory, National Solar Observatory, Sunspot, NM, 88349, USA 13: National Solar Observatory, Sunspot, NM, 88349, USA; Source Info: Dec2013, Vol. 180 Issue 1-4, p1; Subject Term: HELIOSPHERE (Astrophysics); Subject Term: IMAGING systems; Subject Term: CORONAGRAPHS; Subject Term: THOMSON scattering; Subject Term: SOLAR wind; Subject Term: INTERPLANETARY medium; Subject Term: OUTER space; Subject Term: EXPLORATION; Author-Supplied Keyword: Comets; Author-Supplied Keyword: Coronal mass ejections; Author-Supplied Keyword: Corotating interaction regions; Author-Supplied Keyword: Gegenschein; Author-Supplied Keyword: Heliospheric imaging; Author-Supplied Keyword: High-altitude aurora; Author-Supplied Keyword: Instrumentation; Author-Supplied Keyword: Interplanetary medium; Author-Supplied Keyword: Solar-terrestrial relations; Author-Supplied Keyword: Space weather forecasting; Author-Supplied Keyword: Variable stars; Author-Supplied Keyword: Zodiacal light; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 38p; Document Type: Article L3 - 10.1007/s11214-013-9992-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92629772&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abadi, Parisa Pour Shahid Saeed AU - Maschmann, Matthew R AU - Baur, Jeffery W AU - Graham, Samuel AU - Cola, Baratunde A T1 - Deformation response of conformally coated carbon nanotube forests. JO - Nanotechnology JF - Nanotechnology Y1 - 2013/11/29/ VL - 24 IS - 47 M3 - Article SP - 475707 EP - 475714 SN - 09574484 AB - The deformation mechanism and mechanical properties of carbon nanotube (CNT) forests conformally coated with alumina using atomic layer deposition (ALD) are investigated using in situ and ex situ micro-indentation. While micro-indentation of a CNT forest coated with a thin discontinuous layer using 20 ALD cycles results in a deformation response similar to the response of uncoated CNT forests, a similar test on a CNT forest coated with a sufficiently thick and continuous layer using 100 ALD cycles causes fracture of both the alumina coatings and the core CNTs. With a 10 nm coating, 4-fold and 14-fold stiffness increases are measured using a flat punch and a Berkovich tip, respectively. Indentation testing with the Berkovich tip also reveals increased recoverability at relatively low strains. The results show that ALD coated CNT forests could be useful for applications that require higher stiffness or recoverability. Also, fracturing of the nanotubes shows that upper limits exist in the loading of conformally coated CNT forests. [ABSTRACT FROM AUTHOR] AB - Copyright of Nanotechnology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes -- Testing KW - SURFACE topography KW - DEFORMATION of surfaces KW - DEFORMATION potential KW - ATOMIC layer deposition N1 - Accession Number: 94291797; Abadi, Parisa Pour Shahid Saeed 1 Maschmann, Matthew R 2,3 Baur, Jeffery W 2 Graham, Samuel 1,4; Email Address: sgraham@gatech.edu Cola, Baratunde A 1,4; Email Address: cola@gatech.edu; Affiliation: 1: George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, GA 30332, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright-Patterson Air Force Base, OH 45433, USA 3: Universal Technology Corporation, Beavercreek, OH 45432, USA 4: School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, GA 30332, USA; Source Info: 11/29/2013, Vol. 24 Issue 47, p475707; Subject Term: CARBON nanotubes -- Testing; Subject Term: SURFACE topography; Subject Term: DEFORMATION of surfaces; Subject Term: DEFORMATION potential; Subject Term: ATOMIC layer deposition; Number of Pages: 8p; Document Type: Article L3 - 10.1088/0957-4484/24/47/475707 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94291797&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cooper, Russell AU - Zolot, Alexander M. AU - Boatz, Jerry A. AU - Sporleder, David P. AU - Stearns, Jaime A. T1 - IR and UV Spectroscopy of Vapor-Phase Jet-Cooled Ionic Liquid [emim]+[Tf2N]-: Ion Pair Structure and Photodissociation Dynamics. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2013/11/27/ VL - 117 IS - 47 M3 - Article SP - 12419 EP - 12428 SN - 10895639 AB - Small gas-phase clusters (ion pairs) of the ionic liquid [emim]+[Tf2N]- have been generated in a supersonic expansion. Clusters are investigated via UV photofragmentation and time-of-flight mass spectrometry. Spectra between 42000 and 45000 cm-1 reveal dynamical branching between direct dissociation of the ion pair to the cation and anion and to radical species. The IR spectrum between 2800 and 3200 cm-1 was measured by action spectroscopy. Multiple conformations of the ion pair are found to be present in the molecular beam, leading to broad spectral features, further complicated by hydrogen bonding and Fermi resonances. The measured and theoretical spectra compare well, and the jet-cooled ion pair structures present in the molecular beam are strongly hydrogen bonded "stacked" conformers. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONIC liquids KW - INFRARED spectroscopy KW - ULTRAVIOLET spectroscopy KW - PHOTODISSOCIATION KW - FRAGMENTATION reactions KW - CONFORMATIONAL analysis N1 - Accession Number: 108979614; Cooper, Russell 1 Zolot, Alexander M. 1,2 Boatz, Jerry A. 3 Sporleder, David P. 1 Stearns, Jaime A. 1; Email Address: afrl.rvborgmailbox@kirtland.af.mil; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico 87117, United States 2: Institute for Scientific Research, Boston College, Chestnut Hill, Massachusetts 02467, United States 3: Aerospace Systems Directorate, Air Force Research Laboratory, Edwards AFB, California 93524, United States; Source Info: Nov2013, Vol. 117 Issue 47, p12419; Subject Term: IONIC liquids; Subject Term: INFRARED spectroscopy; Subject Term: ULTRAVIOLET spectroscopy; Subject Term: PHOTODISSOCIATION; Subject Term: FRAGMENTATION reactions; Subject Term: CONFORMATIONAL analysis; Number of Pages: 10p; Document Type: Article L3 - 10.1021/jp409670n UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=108979614&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ravi Shankar, M. AU - Smith, Matthew L. AU - Tondiglia, Vincent P. AU - Kyung Min Lee AU - McConney, Michael E. AU - Wang, David H. AU - Loon-Seng Tan AU - White, Timothy J. T1 - Contactless, photoinitiated snap-through in azobenzene-functionalized polymers. JO - Proceedings of the National Academy of Sciences of the United States of America JF - Proceedings of the National Academy of Sciences of the United States of America Y1 - 2013/11/19/ VL - 110 IS - 47 M3 - Article SP - 18792 EP - 18797 SN - 00278424 AB - Photomechanical effects in polymeric materials and composites transduce light into mechanical work. The ability to control the intensity, polarization, placement, and duration of light irradiation is a distinctive and potentially useful tool to tailor the location, magnitude, and directionality of photogenerated mechanical work. Unfortunately, the work generated from photoresponsive materials is often slow and yields very small power densities, which diminish their potential use in applications. Here, we investigate photo-initiated snap-through in bistable arches formed from samples composed of azobenzene-functionalized polymers (both amorphous polyimides and liquid crystal polymer networks) and report orders-of-magnitude enhancement in actuation rates (approaching 102 mm/s) and powers (as much as 1 kW/m3). The contactiess, ultra-fast actuation is observed at irradiation intensities <<100 mW/cm2. Due to the bistability and symmetry of the snap-through, reversible and bidirectional actuation is demonstrated. A model is developed to elucidate the underlying mechanics of the snap-through, specifically focusing on isolating the role of sample geometry, mechanical properties of the materials, and photomechanical strain. Using light to trigger contactless, ultrafast actuation in an otherwise passive structure is a potentially versatile tool to use in mechanical design at the micro-, meso-, and millimeter scales as actuators, as well as switches that can be triggered from large standoff distances, impulse generators for microvehicles, microfluidic valves and mixers in laboratory-on-chip devices, and adaptive optical elements. [ABSTRACT FROM AUTHOR] AB - Copyright of Proceedings of the National Academy of Sciences of the United States of America is the property of National Academy of Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AZOBENZENE KW - POLYMERS KW - PHOTOMECHANICAL processes KW - OPTICAL polarization KW - IRRADIATION KW - OPTICAL elements KW - elastic instability KW - photochemistry N1 - Accession Number: 92536180; Ravi Shankar, M. 1; Email Address: ravishm@pitt.edu Smith, Matthew L. 2 Tondiglia, Vincent P. 3 Kyung Min Lee 3 McConney, Michael E. 3 Wang, David H. 3 Loon-Seng Tan 3 White, Timothy J. 3; Email Address: timothy.white.24@us.af.mil; Affiliation: 1: Department of Industrial Engineering, University of Pittsburgh, Pittsburgh, PA 15261 2: Department of Engineering, Hope College, Holland, Ml 49423 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, OH 45433; Source Info: 11/19/2013, Vol. 110 Issue 47, p18792; Subject Term: AZOBENZENE; Subject Term: POLYMERS; Subject Term: PHOTOMECHANICAL processes; Subject Term: OPTICAL polarization; Subject Term: IRRADIATION; Subject Term: OPTICAL elements; Author-Supplied Keyword: elastic instability; Author-Supplied Keyword: photochemistry; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1073/pnas.1313195110 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92536180&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mahalingam, Krishnamurthy AU - Haugan, Heather J. AU - Brown, Gail J. AU - Aronow, Andrew J. T1 - Strain analysis of compositionally tailored interfaces in InAs/GaSb superlattices. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/11/18/ VL - 103 IS - 21 M3 - Article SP - 211605 EP - 211605-4 PB - American Institute of Physics SN - 00036951 AB - The effect of interface composition control on interfacial strain distribution in InAs/GaSb superlattices on (100)-GaSb substrates is investigated by atomic resolution scanning transmission electron microscopy. The interface composition was controlled by either depositing InSb at each interface or soaking the GaSb-on-InAs interface under Sb2 atmosphere. The strain profiles reveal a distinct difference in the extent to which the superlattice strain is balanced using the two methods. In particular, they indicate that the degree of strain balance achievable with soaking is inherently limited by the arsenic surface coverage during GaSb-on-InAs interface formation, emphasizing the influence of V/III flux ratio at this interface. The results also explain observed X-ray diffraction profiles. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - SUPERCONDUCTING superlattices KW - STRAIN energy KW - TRANSMISSION electron microscopy KW - X-ray diffraction KW - INTERFACE circuits N1 - Accession Number: 92554804; Mahalingam, Krishnamurthy 1 Haugan, Heather J. 1 Brown, Gail J. 1 Aronow, Andrew J. 1; Affiliation: 1: AFRL/RXAN, Materials and Manufacturing Directorate Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433-7707,; Source Info: 11/18/2013, Vol. 103 Issue 21, p211605; Subject Term: SUPERLATTICES; Subject Term: SUPERCONDUCTING superlattices; Subject Term: STRAIN energy; Subject Term: TRANSMISSION electron microscopy; Subject Term: X-ray diffraction; Subject Term: INTERFACE circuits; Number of Pages: 1p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.4833536 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92554804&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hanchak, M. S. AU - Vangsness, M. D. AU - Byrd, L. W. AU - Ervin, J. S. AU - Jones, J. G. T1 - Profile measurements of thin liquid films using reflectometry. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/11/18/ VL - 103 IS - 21 M3 - Article SP - 211607 EP - 211607-4 PB - American Institute of Physics SN - 00036951 AB - Microscope-based reflectometry was used to measure the thickness profile of thin films of n-octane on silicon wafer substrates. Coupled with micro-positioning motorized stages and custom software, two-dimensional profiles of the film thickness from the adsorbed film (∼10 nm) to the intrinsic meniscus (∼1000 nm) were automatically and repeatedly measured. The reflectometer aperture was modified to provide better spatial resolution in areas of high curvature, the transition region, where evaporative flux is at a maximum. This technique will provide data for the validation of both existing and future models of thin film evaporation. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REFLECTOMETRY KW - LIQUID films KW - SILICON wafers KW - OCTANE KW - MENISCUS (Liquids) KW - FLUX (Energy) KW - THIN films -- Electric properties KW - REFLECTOMETER N1 - Accession Number: 92554721; Hanchak, M. S. 1 Vangsness, M. D. 1 Byrd, L. W. 2 Ervin, J. S. 1 Jones, J. G. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469, 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433,; Source Info: 11/18/2013, Vol. 103 Issue 21, p211607; Subject Term: REFLECTOMETRY; Subject Term: LIQUID films; Subject Term: SILICON wafers; Subject Term: OCTANE; Subject Term: MENISCUS (Liquids); Subject Term: FLUX (Energy); Subject Term: THIN films -- Electric properties; Subject Term: REFLECTOMETER; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 1p; Illustrations: 1 Black and White Photograph, 3 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.4833855 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92554721&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rhodes, Albert N. AU - Fulthorpe, Roberta R. AU - Tiedje, James M. T1 - Probing the Functional Diversity of Global Pristine Soil Communities with 3-Chlorobenzoate Reveals that Communities of Generalists Dominate Catabolic Transformation. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2013/11/15/ VL - 79 IS - 22 M3 - Article SP - 6932 EP - 6940 SN - 00992240 AB - Understanding of functional diversity of microbial populations has lagged description of their molecular diversity. Differences in substrate specificity, kinetics, products, and regulation can dramatically influence phenotypic variation among closely related strains, features that are missed when the strains studied are the fastest-growing and most easily isolated from serial enrichments. To investigate the broader bacterial diversity underlying degradation of anthropogenic chemicals in nature, we studied the 3-chlorobenzoate (3-CBA) degradation rate in a collection of aerobic 3-CBA degraders previously isolated from undisturbed soils in two representative ecosystems: (i) Mediterranean sclerophyllous woodlands in California, Chile, South Africa, and Australia and (ii) boreal forests in Canada and Russia. The majority of isolates degraded 3-CBA slowly and did not completely mineralize 1.0mM3-CBA within 1 week. Those with intermediate degradation rates had incomplete degradation pathways and produced colored intermediates indicative of chlorocatechol, a product likely metabolized by other members of the community. About 10% of the isolates grew rapidly and mineralized greater than 90% of the 3-CBA, but because of population heterogeneity in soil, they are likely not large contributors to a soil's total transformation capacity. This suggests that xenobiotic degradation in nature is carried out by a community of cometabolic generalists and not by the efficient specialists that have been traditionally studied in the laboratory. A subset of 58 genotypically distinct strains able to degrade>80% of the 3-CBA was examined for their catabolic versatility using 45 different compounds: mono- and dichlorinated benzoates, phenols, anilines, toluenes, nitrobenzenes, chlorobenzenes, and 2,4-dichlorophenoxyacetic acid. The isolates degraded from 2 to more than 30 compounds with a median of 7, but there was no correlation to habitat of isolation or 3-CBA activity. However, these findings were indicative of finer-scale functional diversity. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHLOROBENZOATES KW - BACTERIAL diversity KW - ANTHROPOGENIC soils KW - TAIGAS KW - XENOBIOTICS KW - CHLOROCATECHOLS KW - AEROBIC bacteria N1 - Accession Number: 91508203; Rhodes, Albert N. 1 Fulthorpe, Roberta R. 2 Tiedje, James M. 3; Email Address: tiedjej@msu.edu; Affiliation: 1: Air Force Research Laboratory, Airbase Technologies Division, Tyndall Air Force Base, Florida, USA 2: Physical Sciences Division, University of Toronto, Scarborough, Ontario, Canada 3: Department of Plant, Soil and Microbial Sciences and Center for Microbial Ecology, Michigan State University, East Lansing, Michigan, USA; Source Info: Nov2013, Vol. 79 Issue 22, p6932; Subject Term: CHLOROBENZOATES; Subject Term: BACTERIAL diversity; Subject Term: ANTHROPOGENIC soils; Subject Term: TAIGAS; Subject Term: XENOBIOTICS; Subject Term: CHLOROCATECHOLS; Subject Term: AEROBIC bacteria; Number of Pages: 9p; Document Type: Article L3 - 10.1128/AEM.01905-13 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91508203&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Konkova, T. AU - Mironov, S. AU - Korznikov, A. AU - Myshlyaev, M.M. AU - Semiatin, S.L. T1 - Annealing behavior of cryogenically-rolled copper. JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2013/11/15/ VL - 585 M3 - Article SP - 178 EP - 189 SN - 09215093 AB - The static annealing behavior of cryogenically-rolled copper over a wide temperature range (50–950°C) was established. At temperatures below 350°C (~0.5T m), microstructure and texture evolution were interpreted in terms of discontinuous recrystallization. Grains having orientations close to (55;30/60;0), {236}〈385〉 (Brass-R), and {4;4;11}〈11;11;8〉 (Dillamore) were shown to recover rapidly and thus exhibited preferential growth during subsequent static recrystallization. At temperatures of 350°C and higher, annealing behavior was dominated by abnormal grain growth. The abnormal character of this process was attributed to the relatively large spread in grain sizes produced during preceding recrystallization. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANNEALING of metals KW - COPPER rolling (Metalwork) KW - CRYOGENICS KW - EFFECT of temperature on metals KW - MICROSTRUCTURE KW - RECRYSTALLIZATION (Metallurgy) KW - EBSD KW - Grain growth KW - Nanostructured materials KW - Recrystallization KW - Thermomechanical processing N1 - Accession Number: 90213313; Konkova, T. 1; Email Address: konkova_05@mail.ru Mironov, S. 2; Email Address: S-72@mail.ru Korznikov, A. 1; Email Address: korznikov@imsp.ru Myshlyaev, M.M. 3; Email Address: myshlyae@issp.ac.ru Semiatin, S.L. 4; Email Address: Lee.Semiatin@wpafb.af.mil; Affiliation: 1: Institute for Metals Superplasticity Problems, Russian Academy of Science, 39 Khalturin Str., Ufa 450001, Russia 2: Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Sendai 980-8579, Japan 3: Baikov Institute of Metallurgy and Material Science, Russian Academy of Science, 49 Lenin-av., Moscow 119991, Russia 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Nov2013, Vol. 585, p178; Subject Term: ANNEALING of metals; Subject Term: COPPER rolling (Metalwork); Subject Term: CRYOGENICS; Subject Term: EFFECT of temperature on metals; Subject Term: MICROSTRUCTURE; Subject Term: RECRYSTALLIZATION (Metallurgy); Author-Supplied Keyword: EBSD; Author-Supplied Keyword: Grain growth; Author-Supplied Keyword: Nanostructured materials; Author-Supplied Keyword: Recrystallization; Author-Supplied Keyword: Thermomechanical processing; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.msea.2013.07.042 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90213313&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Viggiano, Albert A. T1 - Electron attachment to C2 fluorocarbon radicals at high temperature. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2013/11/14/ VL - 139 IS - 18 M3 - Article SP - 184306 PB - American Institute of Physics SN - 00219606 AB - Thermal electron attachment to the radical species C2F3 and C2F5 has been studied over the temperature range 300-890 K using the Variable Electron and Neutral Density Attachment Mass Spectrometry technique. Both radicals exclusively undergo dissociative attachment to yield F-. The rate constant for C2F5 shows little dependence over the temperature range, remaining ∼4 × 10-9 cm3 s-1. The rate constant for C2F3 attachment rises steeply with temperature from 3 × 10-11 cm3 s-1 at 300 K to 1 × 10-9 cm3 s-1 at 890 K. The behaviors of both species at high temperature are in agreement with extrapolations previously made from data below 600 K using a recently developed kinetic modeling approach. Measurements were also made on C2F3Br and C2F5Br (used in this work as precursors to the radicals) over the same temperature range, and, for C2F5Br as a function of electron temperature. The attachment rate constants to both species rise with temperature following Arrhenius behavior. The attachment rate constant to C2F5Br falls with increasing electron temperature, in agreement with the kinetic modeling. The current data fall in line with past predictions of the kinetic modeling approach, again showing the utility of this simplified approach. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL electrons KW - RESEARCH KW - FLUOROCARBONS KW - ARRHENIUS equation KW - PLASMA etching -- Mathematical models KW - THERMIONIC emission N1 - Accession Number: 92706755; Shuman, Nicholas S. 1 Miller, Thomas M. 1 Viggiano, Albert A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicle Directorate, Kirtland Air Force Base, New Mexico 87117,; Source Info: Nov2013, Vol. 139 Issue 18, p184306; Subject Term: THERMAL electrons; Subject Term: RESEARCH; Subject Term: FLUOROCARBONS; Subject Term: ARRHENIUS equation; Subject Term: PLASMA etching -- Mathematical models; Subject Term: THERMIONIC emission; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 7p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.4829447 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92706755&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vernon, Jonathan P. AU - Serak, Svetlana V. AU - Hakobyan, Rafik S. AU - Aleksanyan, Artur K. AU - Tondiglia, Vincent P. AU - White, Timothy J. AU - Bunning, Timothy J. AU - Tabiryan, Nelson V. T1 - Recording polarization gratings with a standing spiral wave. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/11/11/ VL - 103 IS - 20 M3 - Article SP - 201101 EP - 201101-4 PB - American Institute of Physics SN - 00036951 AB - A scalable and robust methodology for writing cycloidal modulation patterns of optical axis orientation in photosensitive surface alignment layers is demonstrated. Counterpropagating circularly polarized beams, generated by reflection of the input beam from a cholesteric liquid crystal, direct local surface orientation in a photosensitive surface. Purposely introducing a slight angle between the input beam and the photosensitive surface normal introduces a grating period/orientation that is readily controlled and templated. The resulting cycloidal diffractive waveplates offer utility in technologies requiring diffraction over a broad range of angles/wavelengths. This simple methodology of forming polarization gratings offers advantages over conventional fabrication techniques. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLARIZATION (Nuclear physics) KW - RESEARCH KW - CYCLOIDAL propellers KW - MODULATION (Electronics) KW - PHOTOSENSITIVE polyimides KW - POLARIZED beams (Nuclear physics) KW - DIFFRACTION gratings N1 - Accession Number: 92706662; Vernon, Jonathan P. 1 Serak, Svetlana V. 2 Hakobyan, Rafik S. 2 Aleksanyan, Artur K. 2 Tondiglia, Vincent P. 1 White, Timothy J. 1 Bunning, Timothy J. 1 Tabiryan, Nelson V. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, 3005 Hobson Way, Suite 1, Wright-Patterson Air Force Base, Ohio 45433, 2: BEAM Engineering for Advanced Measurements Company, 809 South Orlando Avenue, Suite I, Winter Park, Florida 32789; Source Info: 11/11/2013, Vol. 103 Issue 20, p201101; Subject Term: POLARIZATION (Nuclear physics); Subject Term: RESEARCH; Subject Term: CYCLOIDAL propellers; Subject Term: MODULATION (Electronics); Subject Term: PHOTOSENSITIVE polyimides; Subject Term: POLARIZED beams (Nuclear physics); Subject Term: DIFFRACTION gratings; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; Number of Pages: 1p; Illustrations: 2 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.4829742 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92706662&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nagelli, Enoch AU - Naik, Rajesh AU - Xue, Yuhua AU - Gao, Yunxiang AU - Zhang, Mei AU - Dai, Liming T1 - Sensor arrays from multicomponent micropatterned nanoparticles and graphene. JO - Nanotechnology JF - Nanotechnology Y1 - 2013/11/08/ VL - 24 IS - 44 M3 - Article SP - 444010 EP - 444016 SN - 09574484 AB - A novel approach for multicomponent patterning metal/metal oxide nanoparticles on graphene was developed, which involves region-specific plasma treatment, followed by region-selective substrate-enhanced electroless deposition of Au nanoparticles and solution alkalization of ferrous chloride tetrahydrate in the presence of ammonia into Fe3O4 nanoparticles. The resultant Fe3O4/Au multicomponent micropatterned-graphene films were found to be highly selective sensor arrays for detecting low levels of chemical vapor molecules at ppm levels. This novel concept could be applied to the development of various multicomponent patterned nanomaterials for many potential applications, ranging from nanoscale region-specific chemical-/bio-sensor arrays to multifunctional optoelectronic devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Nanotechnology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES -- Electric properties KW - GRAPHENE -- Electric properties KW - METAL oxide semiconductors KW - ELECTROLESS deposition KW - AMMONIA -- Crystallography N1 - Accession Number: 94291719; Nagelli, Enoch 1 Naik, Rajesh 2 Xue, Yuhua 1 Gao, Yunxiang 1 Zhang, Mei 1 Dai, Liming 1; Email Address: liming.dai@case.edu; Affiliation: 1: Case School of Engineering, Case Western Reserve University, Cleveland, OH 44106, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH 45433, USA; Source Info: 11/8/2013, Vol. 24 Issue 44, p444010; Subject Term: NANOPARTICLES -- Electric properties; Subject Term: GRAPHENE -- Electric properties; Subject Term: METAL oxide semiconductors; Subject Term: ELECTROLESS deposition; Subject Term: AMMONIA -- Crystallography; Number of Pages: 7p; Document Type: Article L3 - 10.1088/0957-4484/24/44/444010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94291719&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Johnsen, Rainer AU - Viggiano, Albert A. T1 - Communication: Transfer ionization in a thermal reaction of a cation and anion: Ar+ with Br- and I-. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2013/11/07/ VL - 139 IS - 17 M3 - Article SP - 171102 PB - American Institute of Physics SN - 00219606 AB - We present experimental evidence that reactions of argon cations Ar+ with the halogen anions Br- and I- do not occur exclusively by mutual neutralization, but also produce the cations Br+ or I+ ions by transfer ionization (TI). The experiments were carried out in flowing-afterglow plasmas at gas temperatures between and 300 and 500 K, and employed a variant of the Variable Electron and Neutral Density Attachment Mass Spectrometry method. The measured TI rate coefficients are 1.9 ± 0.6 × 10-9 cm3 s-1 and 1.1 ± 0.30.8 × 10-9 cm3 s-1 for the Br- and I- reactions, respectively. We find that the TI rate coefficients decline with temperature as T-0.5 to T-1. No indication of TI was found in the reaction with Cl-, where it is endoergic. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONIZATION (Atomic physics) KW - CATIONS KW - ANIONS KW - ARGON KW - HALOGENS KW - AFTERGLOW (Physics) KW - NEUTRALIZATION (Chemistry) KW - ASSOCIATIVE ionization N1 - Accession Number: 91860349; Shuman, Nicholas S. 1 Miller, Thomas M. 1 Johnsen, Rainer 2 Viggiano, Albert A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, 2: Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260,; Source Info: Nov2013, Vol. 139 Issue 17, p171102; Subject Term: IONIZATION (Atomic physics); Subject Term: CATIONS; Subject Term: ANIONS; Subject Term: ARGON; Subject Term: HALOGENS; Subject Term: AFTERGLOW (Physics); Subject Term: NEUTRALIZATION (Chemistry); Subject Term: ASSOCIATIVE ionization; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 3p; Illustrations: 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.4828455 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91860349&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Killat, N. AU - Montes Bajo, M. AU - Paskova, T. AU - Evans, K. R. AU - Leach, J. AU - Li, X. AU - Özgür, Ü. AU - Morkoç, H. AU - Chabak, K. D. AU - Crespo, A. AU - Gillespie, J. K. AU - Fitch, R. AU - Kossler, M. AU - Walker, D. E. AU - Trejo, M. AU - Via, G. D. AU - Blevins, J. D. AU - Kuball, M. T1 - Reliability of AlGaN/GaN high electron mobility transistors on low dislocation density bulk GaN substrate: Implications of surface step edges. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/11/04/ VL - 103 IS - 19 M3 - Article SP - 193507 PB - American Institute of Physics SN - 00036951 AB - To enable gaining insight into degradation mechanisms of AlGaN/GaN high electron mobility transistors, devices grown on a low-dislocation-density bulk-GaN substrate were studied. Gate leakage current and electroluminescence (EL) monitoring revealed a progressive appearance of EL spots during off-state stress which signify the generation of gate current leakage paths. Atomic force microscopy evidenced the formation of semiconductor surface pits at the failure location, which corresponds to the interaction region of the gate contact edge and the edges of surface steps. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH electron mobility transistors KW - DISLOCATION density KW - ELECTROLUMINESCENCE KW - VAPOR phase epitaxial growth KW - METAL organic chemical vapor deposition N1 - Accession Number: 92706590; Killat, N. 1 Montes Bajo, M. 1 Paskova, T. 2,3 Evans, K. R. 2 Leach, J. 2,4 Li, X. 4 Özgür, Ü. 4 Morkoç, H. 4 Chabak, K. D. 5 Crespo, A. 5 Gillespie, J. K. 5 Fitch, R. 5 Kossler, M. 5 Walker, D. E. 5 Trejo, M. 5 Via, G. D. 5 Blevins, J. D. 5 Kuball, M. 1; Affiliation: 1: Center for Device Thermography and Reliability (CDTR), H.H. Wills Physics Laboratory, Tyndall Avenue, Bristol BS8 1TL, 2: Kyma Technologies, Inc., Raleigh, North Carolina 27617, 3: Materials Science and Engineering Department, North Carolina State University, Raleigh, North Carolina 27695, 4: Electrical and Computer Engineering Department, Virginia Commonwealth University, Richmond, Virginia 23284, 5: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433,; Source Info: 11/4/2013, Vol. 103 Issue 19, p193507; Subject Term: HIGH electron mobility transistors; Subject Term: DISLOCATION density; Subject Term: ELECTROLUMINESCENCE; Subject Term: VAPOR phase epitaxial growth; Subject Term: METAL organic chemical vapor deposition; Number of Pages: 4p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.4829062 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92706590&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cornella, Barry M. AU - Gimelshein, Sergey F. AU - Lilly, Taylor C. AU - Ketsdever, Andrew D. T1 - Neutral gas heating via non-resonant optical lattices. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/11/04/ VL - 103 IS - 19 M3 - Article SP - 194103 PB - American Institute of Physics SN - 00036951 AB - Energy deposition from high intensity pulsed optical lattices to a neutral gas was experimentally recorded for molecular nitrogen at 300/500 K and methane at 300 K. The magnitude of acoustic waves generated by the interaction was experimentally measured and simulated using the direct simulation Monte-Carlo method. The relationship between the lattice velocity and the measured acoustic wave magnitude was compared to numerical simulation which both exhibited dependence on lattice velocity, indicating that the detected pressure wave was the result of gas heating from the optical lattice and not from other forms of laser energy deposition. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL lattices KW - NITROGEN KW - RESEARCH KW - METHANE KW - SOUND waves KW - MONTE Carlo method KW - COMPUTER simulation N1 - Accession Number: 92706569; Cornella, Barry M. 1 Gimelshein, Sergey F. 1 Lilly, Taylor C. 2 Ketsdever, Andrew D. 3; Affiliation: 1: ERC Inc., Edwards AFB, California 93524, 2: Department of Mechanical and Aerospace Engineering, University of Colorado Colorado Springs, Colorado Springs, Colorado 80918, 3: Air Force Research Laboratory, Edwards AFB, California 93524,; Source Info: 11/4/2013, Vol. 103 Issue 19, p194103; Subject Term: OPTICAL lattices; Subject Term: NITROGEN; Subject Term: RESEARCH; Subject Term: METHANE; Subject Term: SOUND waves; Subject Term: MONTE Carlo method; Subject Term: COMPUTER simulation; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 4p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.4829918 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92706569&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Hillary L. AU - Hornbuckle, B.C. AU - Mauger, L. AU - Fu, B. AU - Tracy, S.J. AU - Thompson, G.B. AU - Lucas, M.S. AU - Xiao, Y. AU - Hu, M.Y. AU - Zhao, J. AU - Ercan Alp, E. AU - Fultz, B. T1 - Changes in vibrational entropy during the early stages of chemical unmixing in fcc Cu–6% Fe. JO - Acta Materialia JF - Acta Materialia Y1 - 2013/11// VL - 61 IS - 19 M3 - Article SP - 7466 EP - 7472 SN - 13596454 AB - A nanocrystalline face-centered cubic (fcc) solid solution of 6% Fe in Cu was prepared by high-energy ball milling, and annealed at temperatures from 200 to 360°C to induce chemical unmixing. The chemical state of the material was characterized by three-dimensional atom probe microscopy, Mössbauer spectrometry and X-ray powder diffractometry. The unmixing was heterogeneous, with iron atoms forming iron-rich zones that thicken with further annealing. The phonon partial density of states (pDOS) of 57Fe was measured by nuclear resonant inelastic X-ray scattering, showing the pDOS of the as-prepared material to be that of an fcc crystal. The features of this pDOS became broader in the early stages of unmixing, but only small changes in average phonon frequencies occurred until the body-centered cubic (bcc) phase began to form. The vibrational entropy calculated from the pDOS underwent little change during the early stage of annealing, but decreased rapidly when the bcc phase formed in the material. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COPPER alloys KW - ENTROPY KW - VIBRATION (Mechanics) KW - MIXING KW - NANOCRYSTALS KW - BALL mills KW - ANNEALING of metals KW - X-ray diffractometer KW - Atom probe tomography KW - Fe–Cu alloy KW - Microstructure formation KW - Nanocrystalline material KW - Vibrational entropy N1 - Accession Number: 90630401; Smith, Hillary L. 1; Email Address: HLS@caltech.edu Hornbuckle, B.C. 2 Mauger, L. 1 Fu, B. 2 Tracy, S.J. 1 Thompson, G.B. 2 Lucas, M.S. 3 Xiao, Y. 4 Hu, M.Y. 5 Zhao, J. 5 Ercan Alp, E. 5 Fultz, B. 1; Affiliation: 1: Department of Applied Physics and Materials Science, California Institute of Technology, Pasadena, CA 91125, USA 2: Department of Metallurgical and Materials Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 4: HPCAT, Geophysical Laboratory, Carnegie Institute of Washington, Argonne, IL 60439, USA 5: Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA; Source Info: Nov2013, Vol. 61 Issue 19, p7466; Subject Term: COPPER alloys; Subject Term: ENTROPY; Subject Term: VIBRATION (Mechanics); Subject Term: MIXING; Subject Term: NANOCRYSTALS; Subject Term: BALL mills; Subject Term: ANNEALING of metals; Subject Term: X-ray diffractometer; Author-Supplied Keyword: Atom probe tomography; Author-Supplied Keyword: Fe–Cu alloy; Author-Supplied Keyword: Microstructure formation; Author-Supplied Keyword: Nanocrystalline material; Author-Supplied Keyword: Vibrational entropy; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 331410 Nonferrous Metal (except Aluminum) Smelting and Refining; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.actamat.2013.08.057 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90630401&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sim, Gi-Dong AU - Park, Jun-Hyub AU - Uchic, Michael D. AU - Shade, Paul A. AU - Lee, Soon-Bok AU - Vlassak, Joost J. T1 - An apparatus for performing microtensile tests at elevated temperatures inside a scanning electron microscope. JO - Acta Materialia JF - Acta Materialia Y1 - 2013/11// VL - 61 IS - 19 M3 - Article SP - 7500 EP - 7510 SN - 13596454 AB - Abstract: In this paper, we introduce an apparatus to perform microtensile tests at elevated temperatures inside a scanning electron microscope. The apparatus has a stroke of 250μm with a displacement resolution of 10nm and a load resolution of 9.7μN. Measurements at elevated temperatures are performed through use of two silicon-based micromachined heaters that support the sample. Each heater consists of a tungsten heating element that also serves as a temperature gauge. To demonstrate the testing capabilities, tensile tests were performed on submicron Cu films at various temperatures up to 430°C. Stress–strain curves show a significant decrease in yield strength and initial slope for the samples tested at elevated temperature, which we attribute to diffusion-facilitated grain boundary sliding and dislocation climb. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCANNING electron microscopes KW - TEMPERATURE measurements KW - MICROMACHINING KW - HEATING KW - STRAINS & stresses (Mechanics) KW - CRYSTAL grain boundaries KW - DISLOCATIONS in crystals KW - Creep KW - Grain boundary sliding KW - High-temperature deformation KW - In situ tension test KW - Thin film N1 - Accession Number: 90630405; Sim, Gi-Dong 1,2 Park, Jun-Hyub 1,3 Uchic, Michael D. 4 Shade, Paul A. 4 Lee, Soon-Bok 2 Vlassak, Joost J. 1; Email Address: vlassak@seas.harvard.edu; Affiliation: 1: School of Engineering and Applied Science, Harvard University, Cambridge, MA 02138, USA 2: Department of Mechanical Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea 3: Department of Mechatronics Engineering, College of Engineering, Tongmyong University, 535, Yongdang-Dong, Nam-Gu, Busan 608-711, Republic of Korea 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, 2230 10th Street, Wright-Patterson AFB, OH 45433, USA; Source Info: Nov2013, Vol. 61 Issue 19, p7500; Subject Term: SCANNING electron microscopes; Subject Term: TEMPERATURE measurements; Subject Term: MICROMACHINING; Subject Term: HEATING; Subject Term: STRAINS & stresses (Mechanics); Subject Term: CRYSTAL grain boundaries; Subject Term: DISLOCATIONS in crystals; Author-Supplied Keyword: Creep; Author-Supplied Keyword: Grain boundary sliding; Author-Supplied Keyword: High-temperature deformation; Author-Supplied Keyword: In situ tension test; Author-Supplied Keyword: Thin film; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.actamat.2013.08.064 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90630405&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Soine, Andrew AU - Harker, James AU - Heminger, Alan R. AU - Scherrer, Joseph H. T1 - Deployed Communications in an Austere Environment A Delphi Study. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2013/11//Nov/Dec2013 VL - 27 IS - 6 M3 - Article SP - 82 EP - 94 PB - Superintendent of Documents SN - 1555385X AB - The article presents a study commissioned by the U.S. Air Force's 689th Combat Communications Wing to forecast the future of mobile information and communications technology (ICT) in military operations in austere environments. According to the Delphi technology, the technologies it describes may be in place within the next 10 to 20 years. KW - COMMUNICATION & technology KW - COMMAND of troops KW - SPECIAL operations (Military science) KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 91985863; Soine, Andrew 1 Harker, James 2 Heminger, Alan R. 3 Scherrer, Joseph H. 4; Affiliation: 1: Program manager, Manufacturing and Industrial Technologies Division, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 2: Wing deployment manager, 689th Combat Communications Wing, Robins AFB, Georgia 3: Associate professor of management information systems at the Air Force Institute of Technology, Department of Systems Engineering and Management 4: Commander of the 689th Combat Communications Wing, Robins AFB, Georgia; Source Info: Nov/Dec2013, Vol. 27 Issue 6, p82; Subject Term: COMMUNICATION & technology; Subject Term: COMMAND of troops; Subject Term: SPECIAL operations (Military science); Subject Term: UNITED States; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91985863&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - PRICE JR., JOHN F. T1 - The Consequence of Neglecting Organizational Design. T2 - Distraction stratégique : les conséquences d'une négligence de la conception organisationnelle. JO - Air & Space Power Journal: Afrique et Francophonie JF - Air & Space Power Journal: Afrique et Francophonie Y1 - 2013///4th Quarter 2013 VL - 4 IS - 4 M3 - Article SP - 48 EP - 56 SN - 1931728X AB - The article offers information on the neglect of organizational design by the U.S. Department of Defense and its consequences. Topics discussed include the views of professor Bernard Finel of the Naval War College on the unorganized actions of former Secretary of Defense Robert Gates, the unclear definition of design and reference to texts from several books including "Organization Theory and Design," "Leadership: Enhancing the Lessons of Experience" and "Designing Organizations." KW - NAVAL War College (U.S.) KW - UNITED States. Dept. of Defense KW - GATES, Robert Michael, 1943- KW - FINEL, Bernard KW - ORGANIZATIONAL Design (Book) KW - LEADERSHIP: Enhancing the Lessons of Experience (Book) KW - DESIGNING Organizations (Book) N1 - Accession Number: 94064738; PRICE JR., JOHN F. 1,2; Affiliation: 1: United States Air Force 2: Vice wing commander, 375th Air Mobility Wing, Scott Air Force Base, Illinois; Source Info: 4th Quarter 2013, Vol. 4 Issue 4, p48; Company/Entity: NAVAL War College (U.S.) Company/Entity: UNITED States. Dept. of Defense; Reviews & Products: ORGANIZATIONAL Design (Book); Reviews & Products: LEADERSHIP: Enhancing the Lessons of Experience (Book); Reviews & Products: DESIGNING Organizations (Book); People: GATES, Robert Michael, 1943-; People: FINEL, Bernard; Number of Pages: 18p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94064738&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pruitt, Kristopher A. AU - Braun, Robert J. AU - Newman, Alexandra M. T1 - Establishing conditions for the economic viability of fuel cell-based, combined heat and power distributed generation systems. JO - Applied Energy JF - Applied Energy Y1 - 2013/11// VL - 111 M3 - Article SP - 904 EP - 920 SN - 03062619 AB - Highlights: [•] We derive conditions for the economic viability of a distributed generation technology. [•] We demonstrate these conditions for fuel cell-based systems in various commercial building scenarios. [•] Results indicate that building, market, and configuration significantly impact economic viability. [•] Impact of fuel cell efficiency and carbon tax on emissions on viability are examined. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Energy is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUEL cells KW - COGENERATION of electric power & heat KW - ELECTRIC power production KW - BUILDINGS -- Energy conservation KW - CARBON taxes KW - EMISSIONS (Air pollution) KW - ECONOMIC aspects KW - Carbon tax KW - Combined heat and power KW - Distributed generation KW - Economic viability KW - Fuel cell KW - Mixed integer programming N1 - Accession Number: 90011904; Pruitt, Kristopher A. 1 Braun, Robert J. 2; Email Address: rbraun@mines.edu Newman, Alexandra M. 3; Affiliation: 1: Department of Mathematical Sciences, United States Air Force Academy, Colorado Springs, CO 80840, United States 2: Department of Mechanical Engineering, Colorado School of Mines, Golden, CO 80401, United States 3: Division of Economics and Business, Colorado School of Mines, Golden, CO 80401, United States; Source Info: Nov2013, Vol. 111, p904; Subject Term: FUEL cells; Subject Term: COGENERATION of electric power & heat; Subject Term: ELECTRIC power production; Subject Term: BUILDINGS -- Energy conservation; Subject Term: CARBON taxes; Subject Term: EMISSIONS (Air pollution); Subject Term: ECONOMIC aspects; Author-Supplied Keyword: Carbon tax; Author-Supplied Keyword: Combined heat and power; Author-Supplied Keyword: Distributed generation; Author-Supplied Keyword: Economic viability; Author-Supplied Keyword: Fuel cell; Author-Supplied Keyword: Mixed integer programming; NAICS/Industry Codes: 221112 Fossil Fuel Electric Power Generation; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.apenergy.2013.06.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90011904&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Arnaud.Cabanac AU - Perlovsky, Leonid AU - Bonniot-Cabanac, Marie-Claude AU - Cabanac, Michel T1 - Music and academic performance. JO - Behavioural Brain Research JF - Behavioural Brain Research Y1 - 2013/11// VL - 256 M3 - Article SP - 257 EP - 260 SN - 01664328 AB - Highlights: [•] Students who select music courses have better grades than the others in all subjects. [•] Cognitive mechanisms related to overcoming cognitive dissonances are discussed. [•] Enjoyment of music might cause academic improvement. [ABSTRACT FROM AUTHOR] AB - Copyright of Behavioural Brain Research is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MUSIC -- Instruction & study KW - ACADEMIC achievement KW - CURRICULA (Courses of study) KW - COGNITIVE dissonance KW - MUSIC students KW - ‘Mozart effect’ KW - Academic achievement KW - Cognitive dissonance KW - Music KW - Pleasure N1 - Accession Number: 91738456; Arnaud.Cabanac 1; Email Address: arnaud.cabanac@csdecou.qc.ca Perlovsky, Leonid 2,3; Email Address: leonid@seas.harvard.edu Bonniot-Cabanac, Marie-Claude 4; Email Address: Marie_Claude.Bonniot@fmed.ulaval.ca Cabanac, Michel 4; Email Address: Michel.Cabanac@fmed.ulaval.ca; Affiliation: 1: De Rochebelle School (C.S.D.D), Quebec, Canada 2: Athinoula A. Martinos Center for Biomedical Imaging, Harvard University, Charlestown, MA, USA 3: Air Force Research Laboratory, Dayton, OH, USA 4: Faculty of Medicine, Laval University, Quebec, Canada; Source Info: Nov2013, Vol. 256, p257; Subject Term: MUSIC -- Instruction & study; Subject Term: ACADEMIC achievement; Subject Term: CURRICULA (Courses of study); Subject Term: COGNITIVE dissonance; Subject Term: MUSIC students; Author-Supplied Keyword: ‘Mozart effect’; Author-Supplied Keyword: Academic achievement; Author-Supplied Keyword: Cognitive dissonance; Author-Supplied Keyword: Music; Author-Supplied Keyword: Pleasure; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.bbr.2013.08.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91738456&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhao, Yuan AU - Xu, Rui AU - Zhang, Xuanru AU - Hu, Xiang AU - Knize, Randall J. AU - Lu, Yalin T1 - Simulation of smart windows in the ZnO/VO2/ZnS sandwiched structure with improved thermochromic properties. JO - Energy & Buildings JF - Energy & Buildings Y1 - 2013/11// VL - 66 M3 - Article SP - 545 EP - 552 SN - 03787788 AB - Highlights: [•] New ZnO/VO2/ZnS smart window was modeled with concurrent improvement on T lum and ΔT sol. [•] High ΔT sol of 13.01% was predicted for 3/4-1/4-3/4 waved ZnO/VO2/ZnS films. [•] High T lum of 63.24% and 57.39% were modeled in semiconducting and metallic states. [ABSTRACT FROM AUTHOR] AB - Copyright of Energy & Buildings is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROCHROMIC windows KW - SIMULATION methods & models KW - ZINC compounds KW - SANDWICH construction (Materials) KW - THERMOCHROMISM KW - BUILDINGS -- Energy conservation KW - Antireflection KW - Sandwich KW - Smart window KW - Thin film KW - Transparent material KW - Vanadium dioxide N1 - Accession Number: 90523774; Zhao, Yuan 1 Xu, Rui 2 Zhang, Xuanru 3 Hu, Xiang 3 Knize, Randall J. 4 Lu, Yalin 1,3,4; Email Address: yllu@ustc.edu.cn; Affiliation: 1: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, PR China 2: Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, PR China 3: Advanced Applied Research Center, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Anhui 230026, PR China 4: Laser Optics Research Center, Physics Department, United States Air Force Academy, CO 80840, USA; Source Info: Nov2013, Vol. 66, p545; Subject Term: ELECTROCHROMIC windows; Subject Term: SIMULATION methods & models; Subject Term: ZINC compounds; Subject Term: SANDWICH construction (Materials); Subject Term: THERMOCHROMISM; Subject Term: BUILDINGS -- Energy conservation; Author-Supplied Keyword: Antireflection; Author-Supplied Keyword: Sandwich; Author-Supplied Keyword: Smart window; Author-Supplied Keyword: Thin film; Author-Supplied Keyword: Transparent material; Author-Supplied Keyword: Vanadium dioxide; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.enbuild.2013.07.071 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90523774&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anderson, Richard H. AU - Farrar, David B. AU - Zodrow, Jean M. T1 - Terrestrial Metals Bioavailability: A Comprehensive Review and Literature-Derived Decision Rule for Ecological Risk Assessment. JO - Human & Ecological Risk Assessment JF - Human & Ecological Risk Assessment Y1 - 2013/11// VL - 19 IS - 6 M3 - Article SP - 1488 EP - 1513 SN - 10807039 AB - Interstudy variation among bioavailability studies is a primary deterrent to a universal methodology to assess metals bioavailability to soil-dwelling organisms and is largely the result of specific experimental conditions unique to independent studies. Accordingly, two datasets were established from relevant literature; one includes data from studies related to bioaccumulation (total obs = 520), while the other contains data from studies related to toxicity (total obs = 1264). Experimental factors that affected toxicity and bioaccumulation independent of the effect of soil chemical/physical properties were statistically apportioned from the variation attributed to soil chemical/physical properties for both datasets using a linear mixed model. Residual bioaccumulation data were then used to develop a non-parametric regression tree whereby bootstrap and cross-validation techniques were used to internally validate the resulting decision rule. A similar approach was employed with the toxicity dataset as an independent external validation. A validated decision rule is presented as a quantitative assessment tool that characterizes typical aerobic soils in terms of their potential to sequester common divalent cationic metal contaminants and mitigate their bioavailability to soil-dwelling biota. [ABSTRACT FROM AUTHOR] AB - Copyright of Human & Ecological Risk Assessment is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS KW - BIOAVAILABILITY KW - ECOLOGICAL risk assessment KW - BIOACCUMULATION KW - TOXICITY testing KW - bioavailability KW - decision rule KW - ecological risk assessment. KW - metals N1 - Accession Number: 89077051; Anderson, Richard H. 1; Email Address: richard.anderson.55@us.af.mil Farrar, David B. 2 Zodrow, Jean M. 3,4; Affiliation: 1: Air Force Civil Engineer Center (AFCEC), Department of the U.S. Air Force , Lackland AFB , TX , USA 2: National Center for Environmental Assessment (NCEA), U.S. Environmental Protection Agency , Cincinnati , OH , USA 3: Superfund Division, Region 10, U.S. Environmental Protection Agency , Seattle , WA , USA 4: Arcadia U.S., Inc. , Lakewood , CO , USA; Source Info: Nov2013, Vol. 19 Issue 6, p1488; Subject Term: METALS; Subject Term: BIOAVAILABILITY; Subject Term: ECOLOGICAL risk assessment; Subject Term: BIOACCUMULATION; Subject Term: TOXICITY testing; Author-Supplied Keyword: bioavailability; Author-Supplied Keyword: decision rule; Author-Supplied Keyword: ecological risk assessment.; Author-Supplied Keyword: metals; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 26p; Document Type: Article L3 - 10.1080/10807039.2012.708269 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89077051&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Melko, Joshua J. AU - Ard, Shaun G. AU - Shuman, Nicholas S. AU - Viggiano, Albert A. T1 - Temperature dependences for the reactions of Ar+, O2+, and C7H7+ with toluene and ethylbenzene. JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2013/11// VL - 353 M3 - Article SP - 60 EP - 66 SN - 13873806 AB - Highlights: [•] Ar+ and O2+ react with alkylbenzenes near the collision rate, with little T-dependence. [•] C7H7+ is the primary product, which we find exists mainly as the benzylium isomer. [•] The benzylium isomer reacts through clustering, R-group transfer, and thermal activation. [•] The benzylium-cluster product has a calculated bond energy of about 15kcalmol−1. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TEMPERATURE measurements KW - CHEMICAL reactions KW - ARGON KW - TOLUENE KW - ETHYLBENZENE KW - ISOMERS KW - Alkylbenzenes KW - Flow-tube KW - Kinetics KW - Rate constants N1 - Accession Number: 90637699; Melko, Joshua J. 1 Ard, Shaun G. 1 Shuman, Nicholas S. 1 Viggiano, Albert A. 1; Email Address: afrl.rvborgmailbox@kirtland.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, NM 87117-5776, USA; Source Info: Nov2013, Vol. 353, p60; Subject Term: TEMPERATURE measurements; Subject Term: CHEMICAL reactions; Subject Term: ARGON; Subject Term: TOLUENE; Subject Term: ETHYLBENZENE; Subject Term: ISOMERS; Author-Supplied Keyword: Alkylbenzenes; Author-Supplied Keyword: Flow-tube; Author-Supplied Keyword: Kinetics; Author-Supplied Keyword: Rate constants; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijms.2013.06.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90637699&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alam, M.T. AU - Raghu, A.P. AU - Haque, M.A. AU - Muratore, C. AU - Voevodin, A.A. T1 - Structural size and temperature dependence of solid to air heat transfer. JO - International Journal of Thermal Sciences JF - International Journal of Thermal Sciences Y1 - 2013/11// VL - 73 M3 - Article SP - 1 EP - 7 SN - 12900729 AB - Abstract: Accurate prediction of heat transfer from micro and nanoscale devices is very important for their operation and reliability. While the general consensus is that the heat transfer coefficient increases at the smaller scales, the literature also indicates contradiction in the scaling across length scales. In this paper, we present an experimental technique to accurately characterize heat transfer from micro to nano scales using infrared microscopy on nanofabricated specimens that are integrated with micro heaters. The heat transfer coefficient for quiescent air is found to be about two orders of magnitude higher than its bulk counterpart. It also showed pronounced inversely proportional relationship with temperature and suggested that solid to air conduction is the dominant mode of heat transfer. It was found that pressure only indirectly influences heat transfer. Based on the experimental data, we present an empirical relationship for the heat transfer coefficient that depends on the ratio of the surface area to cross-sectional area, temperature of the heated solid and its proximity to other solid bodies. [Copyright &y& Elsevier] AB - Copyright of International Journal of Thermal Sciences is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT transfer KW - AIR -- Thermal properties KW - NANOELECTROMECHANICAL systems KW - ATMOSPHERIC temperature KW - INFRARED microscopy KW - HEAT conduction KW - Heat transfer coefficient KW - Infrared microscopy KW - Microscale heat transfer KW - Natural convection N1 - Accession Number: 89510966; Alam, M.T. 1 Raghu, A.P. 1 Haque, M.A. 1; Email Address: mah37@psu.edu Muratore, C. 2 Voevodin, A.A. 3; Affiliation: 1: Mechanical & Nuclear Engineering, Penn State University, University Park, PA 16802, USA 2: Department of Chemical and Materials Engineering, University of Dayton, OH 45469, USA 3: Air Force Research Laboratory, Nanoelectronic Materials Branch, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Nov2013, Vol. 73, p1; Subject Term: HEAT transfer; Subject Term: AIR -- Thermal properties; Subject Term: NANOELECTROMECHANICAL systems; Subject Term: ATMOSPHERIC temperature; Subject Term: INFRARED microscopy; Subject Term: HEAT conduction; Author-Supplied Keyword: Heat transfer coefficient; Author-Supplied Keyword: Infrared microscopy; Author-Supplied Keyword: Microscale heat transfer; Author-Supplied Keyword: Natural convection; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijthermalsci.2013.05.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89510966&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dogan, Atilla AU - Blake, William AU - Haag, Christian T1 - Bow Wave Effect in Aerial Refueling: Computational Analysis and Modeling. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2013/11//Nov-Dec2013 VL - 50 IS - 6 M3 - Article SP - 1856 EP - 1868 SN - 00218669 AB - Mechanisms contributing to the "bow wave" effect of a receiver on a tanker are investigated, and a modeling method for dynamic simulation is developed. Vortex lattice and Cart3D codes are used to calculate the aerodynamic forces and moments for a C-141B behind a KC-135. The vortex lattice code significantly underpredicts the bow wave effect, whereas the Cart3D code shows good agreement with available flight data. The modeling method uses stream functions for inviscid flow around solid bodies. The flowfield induced by the presence of aircraft bodies is superimposed on the flowfield generated by horseshoe vortices. The resultant flowfield is approximated by the effective uniform translational and rotational velocity components, which are used in the buildup equations for the aerodynamic force and moment coefficients of both tanker and receiver aircraft. This method applied to a flying wing behind a KC135 shows good agreement with Cart3D results. It is concluded that the major contribution to the "bow wave" effect is the effect of the displacement of air due to the volume of the receiver and not upwash from the bound vortex due to the lift of the receiver. This disagrees with earlier studies that did not have the benefit of flight data to use as a benchmark. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMIC load KW - RESEARCH KW - DYNAMIC simulation (Engineering) KW - AIRPLANES -- Refueling KW - VORTEX lattice method KW - INVISCID flow N1 - Accession Number: 93368429; Dogan, Atilla 1 Blake, William 2 Haag, Christian 2; Affiliation: 1: University of Texas at Arlington, Arlington, Texas 76019 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Nov-Dec2013, Vol. 50 Issue 6, p1856; Subject Term: AERODYNAMIC load; Subject Term: RESEARCH; Subject Term: DYNAMIC simulation (Engineering); Subject Term: AIRPLANES -- Refueling; Subject Term: VORTEX lattice method; Subject Term: INVISCID flow; NAICS/Industry Codes: 488190 Other Support Activities for Air Transportation; Number of Pages: 13p; Document Type: Article L3 - 0.2514/1.C032165 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93368429&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Courtney, Amy C. AU - Andrusiv, Lubov P. AU - Courtney, Michael W. T1 - A TEST OF THE ACOUSTIC IMPEDANCE MODEL OF BLAST WAVE TRANSMISSION. JO - Journal of Battlefield Technology JF - Journal of Battlefield Technology Y1 - 2013/11// VL - 16 IS - 3 M3 - Article SP - 1 EP - 4 SN - 14405113 AB - The ability of armour to minimize blast wave transmission is key in mitigating blast-related injuries. The acoustic impedance model is commonly employed to estimate blast wave transmission of candidate armour materials even though the model assumes semi-infinite material thickness. The applicability of the acoustic impedance model to blast wave transmission through plates has not been experimentally verified. In this study, a 79 mm diameter, oxy-acetylene driven shock tube was used to generate a blast-like wave with a peak pressure of 1173 kPa. The pressure wave transmitted through 6.35 mm thick plates of ten different materials spanning a range of acoustic impedances was measured and compared with predictions of the acoustic impedance model. The magnitude of the peak transmitted blast pressure averaged over five trials for each material was well correlated with both the acoustic impedance of the material (correlation coefficient, r = -0.709) and with the predicted peak transmitted blast pressure (r = 0.844). However, in all cases, the acoustic impedance model predicted significantly lower peak blast pressure transmission than was actually observed, with the peak transmitted pressure varying from 9 to 90 times greater than the prediction of the model, with an average transmission of 41 times the prediction of the model. These results show that even though plate materials with higher acoustic impedance tend to transmit lower peak blast pressure, transmitted pressures are much higher than model predictions, and increasing the acoustic impedance does not ensure a decrease in peak transmitted blast pressure when selecting armour materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Battlefield Technology is the property of Argos Press Pty Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BLAST waves KW - RESEARCH KW - AERODYNAMICS -- Research KW - ACOUSTIC impedance KW - SOUND waves KW - PHYSICAL acoustics N1 - Accession Number: 99032876; Courtney, Amy C. 1 Andrusiv, Lubov P. 2 Courtney, Michael W. 1; Email Address: Michael_Courtney@alum.mit.edu; Affiliation: 1: BTG Research, PO Box 62541, Colorado Springs, CO 80962, USA 2: United States Air Force Academy, 2354 Fairchild Drive, USAF Academy, CO 80840, USA; Source Info: Nov2013, Vol. 16 Issue 3, p1; Subject Term: BLAST waves; Subject Term: RESEARCH; Subject Term: AERODYNAMICS -- Research; Subject Term: ACOUSTIC impedance; Subject Term: SOUND waves; Subject Term: PHYSICAL acoustics; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99032876&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Butler, Sween J. AU - Lee, Dong Weon AU - Burney, Curtis W. AU - Wigle, Jeffrey C. AU - Tae Youl Choi T1 - Microfluidic approach for direct and uniform laser irradiation to study biochemical state changes on Jurkat-T cells. JO - Journal of Biomedical Optics JF - Journal of Biomedical Optics Y1 - 2013/11// VL - 18 IS - 11 M3 - Article SP - 1 EP - 5 SN - 10833668 AB - We investigated the potential for using polydimethylsiloxane microfluidic devices in a biological assay to explore the cellular stress response (CSR) associated with hyperthermia induced by exposure to laser radiation. In vitro studies of laser-tissue interaction traditionally involved exposing a monolayer of cells. Given the heating-cool- ing dynamics of the cells and nutrient medium, this technique produces a characteristic "bulls-eye" temperature history that plagues downstream molecular analyses due to the nonuniform thermal experience of exposed cells. To circumvent this issue, we devised an approach to deliver single cells to the laser beam using a microfluidic channel, allowing homogeneous irradiation and collection of sufficient like-treated cells to measure changes in CSR after laser heating. To test this approach, we irradiated Jurkat-T cells with a 2-µm-wavelength laser in one branch of a 100-µm-wide bifurcated channel while unexposed control cells were simultaneously passing through the other, identical channel. Cell viability was measured using vital dyes, and expression of HSPA1A was measured using reverse transcription polymerase chain reaction. The laser damage threshold was 25 2 J/cm², and we found a twofold increase in expression at that exposure. This approach may be employed to examine transcriptome-wide/proteome changes and further comparative work across stressors and cell types. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Biomedical Optics is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICONES KW - POLYDIMETHYLSILOXANE KW - REJUVENESCENCE (Botany) KW - CYTOPROTECTION KW - PHYSIOLOGY KW - cellular stress response KW - hyperthermia KW - Jurkat-T cells KW - laser bioeffects KW - microfluidics KW - photothermal damage N1 - Accession Number: 97479179; Butler, Sween J. 1 Lee, Dong Weon 2 Burney, Curtis W. 3 Wigle, Jeffrey C. 4 Tae Youl Choi 5; Email Address: choi@egw.unt.edu; Affiliation: 1: University of North Texas, Department of Physics, 1155 Union Circle, #311427, Denton, Texas 76203 2: Chonnam National University, School of Mechanical Systems Engineering, Gwang-Ju 500-757, Republic of Korea 3: United States Air Force Academy, Department of Biology, 2355 Faculty Drive, Suite 2P483, Colorado 80840-6226 4: Optical Radiation Bioeffects Branch, 4141 Petroleum Road, JBSA Fort Sam Houston, Texas 78234-2644 5: University of North Texas, Department of Mechanical and Energy Engineering, 3940 North Elm Street, Suite F-101J, Denton, Texas 76207; Source Info: Nov2013, Vol. 18 Issue 11, p1; Subject Term: SILICONES; Subject Term: POLYDIMETHYLSILOXANE; Subject Term: REJUVENESCENCE (Botany); Subject Term: CYTOPROTECTION; Subject Term: PHYSIOLOGY; Author-Supplied Keyword: cellular stress response; Author-Supplied Keyword: hyperthermia; Author-Supplied Keyword: Jurkat-T cells; Author-Supplied Keyword: laser bioeffects; Author-Supplied Keyword: microfluidics; Author-Supplied Keyword: photothermal damage; Number of Pages: 5p; Document Type: Article L3 - 10.1117/1.JBO.18.11.117004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97479179&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Denton, Michael L. AU - Noojin, Gary D. AU - Foltz, Michael S. AU - Yakovlev, Vladislav V. AU - Estlack, Larry E. AU - Thomas, Robert J. AU - Rockwell, Benjamin A. T1 - Hyperthermia sensitizes pigmented cells to laser damage without changing threshold damage temperature. JO - Journal of Biomedical Optics JF - Journal of Biomedical Optics Y1 - 2013/11// VL - 18 IS - 11 M3 - Article SP - 1 EP - 3 SN - 10833668 AB - Abstract. We studied the efficacy of mild hyperthermia as a protective measure against subsequent laser-induced thermal damage. Using a well established in vitro retinal model for laser bioeffects, consisting of an artificially pigmented human retinal pigment epithelial (RPE) cell culture (hTERT-RPE1), we found both protection and sensitization to laser damage that depended upon the location of pigment granules during the hyperthermia preconditioning (PC). Photothermal challenge of cell monolayers consisted of 16 independent replicate exposures of 65 W/cm² at 514 nm and post laser damage was assessed using fluorescence indicator dyes. Untreated cells had 44% damage, but when melanosome particles (MPs) were intracellular or extracellular during the hyperthermia treatment, laser-induced cell damage occurred 94% or 25% of the time, respectively. Using a recently published method called microthermography, we found that the hyperthermia pre-treatment did not alter the threshold temperature for cell death, indicating an alteration in absorption or localization of heat as the mechanism for sensitization and protection. Raman microspectroscopy revealed significant chemical changes in MPs when they were preconditioned within the cytoplasm of cells. Our results suggest intracellular pigment granules undergo chemical modifications during mild hyperthermia that can profoundly affect absorption or heat dissipation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Biomedical Optics is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FEVER KW - CYTOPROTECTION KW - REJUVENESCENCE (Botany) KW - LASER damage KW - CELLS KW - hyperthermia KW - laser-induced damage KW - microthermography KW - retinal pigment epithelial cells N1 - Accession Number: 97479139; Denton, Michael L. 1 Noojin, Gary D. 1 Foltz, Michael S. 1 Yakovlev, Vladislav V. 2 Estlack, Larry E. 3 Thomas, Robert J. 4; Email Address: robert.j.thomas251.civ@mail.mil Rockwell, Benjamin A. 4; Affiliation: 1: TASC, Inc., Biosciences Division, San Antonio, Texas 78235 2: Texas A&M University, Department of Biomedical Engineering, College Station, Texas 77843 3: General Dynamics, San Antonio, Texas 78234 4: Air Force Research Laboratory, 711 HPW/RHDO, JBSA Fort Sam Houston, Texas 78234-2644; Source Info: Nov2013, Vol. 18 Issue 11, p1; Subject Term: FEVER; Subject Term: CYTOPROTECTION; Subject Term: REJUVENESCENCE (Botany); Subject Term: LASER damage; Subject Term: CELLS; Author-Supplied Keyword: hyperthermia; Author-Supplied Keyword: laser-induced damage; Author-Supplied Keyword: microthermography; Author-Supplied Keyword: retinal pigment epithelial cells; Number of Pages: 3p; Document Type: Article L3 - 10.1117/1.JBO.18.11.110501 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97479139&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Walsh, Matthew M. AU - Anderson, John R. T1 - Electrophysiological Responses to Feedback during the Application of Abstract Rules. JO - Journal of Cognitive Neuroscience JF - Journal of Cognitive Neuroscience Y1 - 2013/11// VL - 25 IS - 11 M3 - Article SP - 1986 EP - 2002 PB - MIT Press SN - 0898929X AB - Much research focuses on how people acquire concrete stimulus-response associations from experience; however, few neuroscientific studies have examined how people learn about and select among abstract rules. To address this issue, we recorded ERPs as participants performed an abstract rule-learning task. In each trial, they viewed a sample number and two test numbers. Participants then chose a test number using one of three abstract mathematical rules they freely selected from: greater than the sample number, less than the sample number, or equal to the sample number. No one rule was always rewarded, but some rules were rewarded more frequently than others. To maximize their earnings, participants needed to learn which rules were rewarded most frequently. All participants learned to select the best rules for repeating and novel stimulus sets that obeyed the overall reward probabilities. Participants differed, however, in the extent to which they overgeneralized those rules to repeating stimulus sets that deviated from the overall reward probabilities. The feedback-related negativity (FRN), an ERP component thought to reflect reward prediction error, paralleled behavior. The FRN was sensitive to item-specific reward probabilities in participants who detected the deviant stimulus set, and the FRN was sensitive to overall reward probabilities in participants who did not. These results show that the FRN is sensitive to the utility of abstract rules and that the individual's representation of a task's states and actions shapes behavior as well as the FRN. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Cognitive Neuroscience is the property of MIT Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROPHYSIOLOGY KW - FEEDBACK (Psychology) KW - NEURAL stimulation KW - PROBABILITY theory KW - EVOKED potentials (Electrophysiology) KW - HUMAN behavior KW - FUNCTIONAL magnetic resonance imaging N1 - Accession Number: 90587502; Walsh, Matthew M. 1 Anderson, John R. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 2: Carnegie Mellon University, Pittsburgh, PA; Source Info: Nov2013, Vol. 25 Issue 11, p1986; Subject Term: ELECTROPHYSIOLOGY; Subject Term: FEEDBACK (Psychology); Subject Term: NEURAL stimulation; Subject Term: PROBABILITY theory; Subject Term: EVOKED potentials (Electrophysiology); Subject Term: HUMAN behavior; Subject Term: FUNCTIONAL magnetic resonance imaging; Number of Pages: 17p; Document Type: Article L3 - 10.1162/jocn_a_00454 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90587502&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ullrich, B. AU - Wang, J.S. T1 - Impact of laser excitation variations on the photoluminescence of PbS quantum dots on GaAs. JO - Journal of Luminescence JF - Journal of Luminescence Y1 - 2013/11// VL - 143 M3 - Article SP - 645 EP - 648 SN - 00222313 AB - Abstract: Gaussian shaped photoluminescence of colloidal 2nm PbS quantum dots on GaAs were measured in the temperature range of 5K to 300K by exciting the dots with varying continuous laser intensities (6W/cm2, 18W/cm2, and 60W/cm2) at 532nm. The work reveals the sensitivity of quantum dot emissions to optical pumping variations. The classical Fan theory describes the emission shift vs. temperature at the lowest excitation intensity, while the clearly altered extrinsic behavior at elevated excitation intensities was fitted with an empirical expression. This extrinsic character is attributed to electronic alterations (Burstein–Moss shift and many body effects) of the absorptive and radiative transition energies. [Copyright &y& Elsevier] AB - Copyright of Journal of Luminescence is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOLUMINESCENCE KW - GALLIUM arsenide KW - OPTICAL pumping KW - LASER beams KW - QUANTUM dots KW - LEAD sulfide KW - TEMPERATURE effect KW - Optically induced electronic alterations KW - PbS quantum dots KW - Photoluminescence KW - Photoluminescence intensity dependence N1 - Accession Number: 89616373; Ullrich, B. 1; Email Address: bruno@fis.unam.mx Wang, J.S. 2; Affiliation: 1: Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México C.P. 62210, México 2: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright Patterson AFB, OH 45433-7707, USA; Source Info: Nov2013, Vol. 143, p645; Subject Term: PHOTOLUMINESCENCE; Subject Term: GALLIUM arsenide; Subject Term: OPTICAL pumping; Subject Term: LASER beams; Subject Term: QUANTUM dots; Subject Term: LEAD sulfide; Subject Term: TEMPERATURE effect; Author-Supplied Keyword: Optically induced electronic alterations; Author-Supplied Keyword: PbS quantum dots; Author-Supplied Keyword: Photoluminescence; Author-Supplied Keyword: Photoluminescence intensity dependence; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jlumin.2013.05.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89616373&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lan, Yucheng AU - Wang, Hui AU - Lin, Feng AU - Lu, Yalin AU - Li, Yang AU - Liu, Yuan AU - Bao, Jiming AU - Ren, Zhifeng AU - Crimp, Martin T1 - Nanoporous gallium nitride square microtubes. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2013/11// VL - 48 IS - 21 M3 - Article SP - 7703 EP - 7707 PB - Springer Science & Business Media B.V. SN - 00222461 AB - Porous gallium nitride microtubes were self-fabricated from gallium nitride submicron irregular structures. The microtubes were of square cross-section. Electron diffractions indicated that the microtubes were composed of zincblende gallium nitride. Electron energy-loss spectrum and photoluminescence spectrum of the microtubes were collected and compared with that of single crystals. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - SPHALERITE KW - NANOPOROUS materials KW - MICROFABRICATION KW - MOLECULAR self-assembly KW - ELECTRON energy loss spectroscopy KW - LUMINESCENCE spectroscopy KW - PHOTOLUMINESCENCE -- Measurement N1 - Accession Number: 89702913; Lan, Yucheng 1; Email Address: ylan2@uh.edu Wang, Hui 1 Lin, Feng 2 Lu, Yalin 3 Li, Yang 4 Liu, Yuan 1 Bao, Jiming 4 Ren, Zhifeng 1; Email Address: zren@uh.edu Crimp, Martin 5; Affiliation: 1: Department of Physics and Texas Center for Superconductivity, University of Houston, Houston 77204 USA 2: State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871 China 3: Laser Optics Research Center, US Air Force Academy, Colorado Springs 80840 USA 4: Department of Electrical and Computer Engineering, University of Houston, Houston 77204 USA 5: Department of Chemical Engineering and Material Science, Michigan State University, East Lansing 48824 USA; Source Info: Nov2013, Vol. 48 Issue 21, p7703; Subject Term: GALLIUM nitride; Subject Term: SPHALERITE; Subject Term: NANOPOROUS materials; Subject Term: MICROFABRICATION; Subject Term: MOLECULAR self-assembly; Subject Term: ELECTRON energy loss spectroscopy; Subject Term: LUMINESCENCE spectroscopy; Subject Term: PHOTOLUMINESCENCE -- Measurement; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 5p; Illustrations: 1 Color Photograph, 1 Black and White Photograph, 2 Graphs; Document Type: Article L3 - 10.1007/s10853-013-7590-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89702913&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ross, Michael T1 - Fundamental Orthopedic Management for the Physical Therapist Assistant, 3rd Edition. JO - Medicine & Science in Sports & Exercise JF - Medicine & Science in Sports & Exercise Y1 - 2013/11// VL - 45 IS - 11 M3 - Book Review SP - 2204 EP - 2204 SN - 01959131 AB - The article reviews the book "Fundamental Orthopedic Management for the Physical Therapy Assistant," third edition edited by Gary A. Shankman and Robert C. Manske. KW - ORTHOPEDICS KW - PHYSICAL therapy assistants N1 - Accession Number: 91553590; Ross, Michael 1; Affiliation: 1: United States Air Force; Source Info: Nov2013, Vol. 45 Issue 11, p2204; Subject Term: ORTHOPEDICS; Subject Term: PHYSICAL therapy assistants; Number of Pages: 1/2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91553590&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - PERLOVSKY, LEONID T1 - SPECIAL ISSUE: ENGINEERING OF THE MIND, COGNITIVE SCIENCE AND ROBOTICS. JO - New Mathematics & Natural Computation JF - New Mathematics & Natural Computation Y1 - 2013/11// VL - 9 IS - 3 M3 - Article SP - 261 EP - 262 SN - 17930057 KW - PUBLISHERS & publishing KW - COGNITIVE science KW - ROBOTICS KW - SYSTEMS engineering KW - ARTIFICIAL intelligence KW - COMPUTER simulation KW - MARKOV processes N1 - Accession Number: 91822806; PERLOVSKY, LEONID 1; Email Address: Iperl@rcn.com; Affiliation: 1: Air Force Research Laboratory, Harvard University, Athinoula A. Martinos Center for Biomedical Imaging, 149 Thirteenth Street, Rm 2301, Charlestown, MA 02129; Source Info: Nov2013, Vol. 9 Issue 3, p261; Subject Term: PUBLISHERS & publishing; Subject Term: COGNITIVE science; Subject Term: ROBOTICS; Subject Term: SYSTEMS engineering; Subject Term: ARTIFICIAL intelligence; Subject Term: COMPUTER simulation; Subject Term: MARKOV processes; NAICS/Industry Codes: 511199 All Other Publishers; NAICS/Industry Codes: 511190 Other publishers; NAICS/Industry Codes: 511130 Book Publishers; Number of Pages: 2p; Document Type: Article L3 - 10.1142/S179300571302002X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91822806&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schneider, Tamera R. AU - Lyons, Joseph B. AU - Khazon, Steven T1 - Emotional intelligence and resilience. JO - Personality & Individual Differences JF - Personality & Individual Differences Y1 - 2013/11// VL - 55 IS - 8 M3 - Article SP - 909 EP - 914 SN - 01918869 AB - Highlights: [•] The influence of ability-based EI on the stress process was examined. [•] EI ability facilitates challenge – increased positive and decreased negative affect, and evoked physiology. [•] The study provides predictive validity for EI as a stress resilience factor. [ABSTRACT FROM AUTHOR] AB - Copyright of Personality & Individual Differences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMOTIONAL intelligence KW - RESILIENCE (Personality trait) KW - PATHOLOGICAL psychology KW - STRESS (Psychology) KW - AFFECT (Psychology) KW - EVOKED potentials (Electrophysiology) KW - COGNITIVE ability KW - Affect KW - Appraisal KW - Emotional intelligence KW - Physiology KW - Positive psychology N1 - Accession Number: 90302406; Schneider, Tamera R. 1; Email Address: tamera.schneider@wright.edu Lyons, Joseph B. 2 Khazon, Steven 1; Affiliation: 1: Wright State University, 3640 Col. Glenn Hwy., Dayton, OH 45435, United States 2: Air Force Research Laboratory, 875 N. Randolph St., Arlington, VA, United States; Source Info: Nov2013, Vol. 55 Issue 8, p909; Subject Term: EMOTIONAL intelligence; Subject Term: RESILIENCE (Personality trait); Subject Term: PATHOLOGICAL psychology; Subject Term: STRESS (Psychology); Subject Term: AFFECT (Psychology); Subject Term: EVOKED potentials (Electrophysiology); Subject Term: COGNITIVE ability; Author-Supplied Keyword: Affect; Author-Supplied Keyword: Appraisal; Author-Supplied Keyword: Emotional intelligence; Author-Supplied Keyword: Physiology; Author-Supplied Keyword: Positive psychology; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.paid.2013.07.460 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90302406&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barnes, Caleb J. AU - Visbal, Miguel R. T1 - Numerical exploration of the origin of aerodynamic enhancements in [low-Reynolds number] corrugated airfoils. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2013/11// VL - 25 IS - 11 M3 - Article SP - 115106 EP - 115106-23 PB - American Institute of Physics SN - 10706631 AB - This paper explores the flow structure of a corrugated airfoil using a high-fidelity implicit large eddy simulation approach. The first three-dimensional simulations for a corrugated wing section are presented considering a range of Reynolds numbers of Rec = 5 × 103 to 5.8 × 104 bridging the gap left by previous numerical and experimental studies. Several important effects are shown to result from the corrugations in the leading-edge region. First, interaction between the detached shear layer and the first corrugation peak promotes recirculation upstream and enhances transition to turbulence due to flow instabilities. Thus, early transitional flow develops on the corrugated wing which helps to delay stall even at Reynolds numbers as low as Rec = 1 × 104. Transition is shown to occur as early as Rec = 7.5 × 103 and quickly advances toward the leading-edge as Reynolds number is increased. Modification of the first corrugation peak height produces significantly reduced separation and improved aerodynamic forces demonstrating the sensitivity of flow behavior to leading-edge geometry. Second, the unusual orientation of the corrugated surface and strong suction resulting from rapidly turning fluid over the separated region upstream of the first corrugation produces a new effect which serves to reduce drag. This effect was amplified through the enhanced interaction produced by a modified geometry. Corrugations were found to be most advantageous in the leading-edge region and could be optimized to properly take advantage of the flow field under different operating conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - REYNOLDS number KW - AEROFOILS KW - NUMERICAL analysis KW - LARGE eddy simulation models KW - SHEAR (Mechanics) N1 - Accession Number: 92659488; Barnes, Caleb J. 1 Visbal, Miguel R. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433,; Source Info: Nov2013, Vol. 25 Issue 11, p115106; Subject Term: AERODYNAMICS; Subject Term: REYNOLDS number; Subject Term: AEROFOILS; Subject Term: NUMERICAL analysis; Subject Term: LARGE eddy simulation models; Subject Term: SHEAR (Mechanics); Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.4832655 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92659488&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ginet, G. AU - O'Brien, T. AU - Huston, S. AU - Johnston, W. AU - Guild, T. AU - Friedel, R. AU - Lindstrom, C. AU - Roth, C. AU - Whelan, P. AU - Quinn, R. AU - Madden, D. AU - Morley, S. AU - Su, Yi-Jiun T1 - AE9, AP9 and SPM: New Models for Specifying the Trapped Energetic Particle and Space Plasma Environment. JO - Space Science Reviews JF - Space Science Reviews Y1 - 2013/11// VL - 179 IS - 1-4 M3 - Article SP - 579 EP - 615 PB - Springer Science & Business Media B.V. SN - 00386308 AB - The radiation belts and plasma in the Earth's magnetosphere pose hazards to satellite systems which restrict design and orbit options with a resultant impact on mission performance and cost. For decades the standard space environment specification used for spacecraft design has been provided by the NASA AE8 and AP8 trapped radiation belt models. There are well-known limitations on their performance, however, and the need for a new trapped radiation and plasma model has been recognized by the engineering community for some time. To address this challenge a new set of models, denoted AE9/AP9/SPM, for energetic electrons, energetic protons and space plasma has been developed. The new models offer significant improvements including more detailed spatial resolution and the quantification of uncertainty due to both space weather and instrument errors. Fundamental to the model design, construction and operation are a number of new data sets and a novel statistical approach which captures first order temporal and spatial correlations allowing for the Monte-Carlo estimation of flux thresholds for user-specified percentile levels (e.g., 50th and 95th) over the course of the mission. An overview of the model architecture, data reduction methods, statistics algorithms, user application and initial validation is presented in this paper. [ABSTRACT FROM AUTHOR] AB - Copyright of Space Science Reviews is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR energetic particles KW - SPACE plasmas KW - SPACE environment KW - RADIATION belts KW - MAGNETOSPHERE KW - SYSTEMS design KW - MATHEMATICAL models KW - Energetic trapped particles KW - Radiation belt modeling KW - Space environment climatology KW - Space weather N1 - Accession Number: 91717016; Ginet, G. 1; Email Address: gregory.ginet@ll.mit.edu O'Brien, T. 2 Huston, S. 3 Johnston, W. 4 Guild, T. 2 Friedel, R. 5 Lindstrom, C. 4 Roth, C. 6 Whelan, P. 6 Quinn, R. 6 Madden, D. 3 Morley, S. 5 Su, Yi-Jiun 4; Affiliation: 1: MIT Lincoln Laboratory, 244 Wood Street Lexington 20420 USA 2: The Aerospace Corporation, 15409 Conference Center Drive Chantilly 20151 USA 3: The Institute for Scientific Research, 400 St. Clement's Hall, Boston College, 140 Commonwealth Avenue Chestnut Hill 02467 USA 4: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB 87117 USA 5: Los Alamos National Laboratory, Los Alamos 87545 USA 6: Atmospheric and Environmental Research, Incorporated, 131 Hartwell Avenue Lexington 02421 USA; Source Info: Nov2013, Vol. 179 Issue 1-4, p579; Subject Term: SOLAR energetic particles; Subject Term: SPACE plasmas; Subject Term: SPACE environment; Subject Term: RADIATION belts; Subject Term: MAGNETOSPHERE; Subject Term: SYSTEMS design; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: Energetic trapped particles; Author-Supplied Keyword: Radiation belt modeling; Author-Supplied Keyword: Space environment climatology; Author-Supplied Keyword: Space weather; Number of Pages: 37p; Document Type: Article L3 - 10.1007/s11214-013-9964-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91717016&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stenbaek-Nielsen, H. AU - Kanmae, T. AU - McHarg, M. AU - Haaland, R. T1 - High-Speed Observations of Sprite Streamers. JO - Surveys in Geophysics JF - Surveys in Geophysics Y1 - 2013/11// VL - 34 IS - 6 M3 - Article SP - 769 EP - 795 SN - 01693298 AB - Sprites are optical emissions in the mesosphere mainly at altitudes 50-90 km. They are caused by the sudden re-distribution of charge due to lightning in the troposphere which can produce electric fields in the mesosphere in excess of the local breakdown field. The resulting optical displays can be spectacular and this has led to research into the physics and chemistry involved. Imaging at faster than 5,000 frames per second has revealed streamer discharges to be an important and very dynamic part of sprites, and this paper will review high-speed observations of sprite streamers. Streamers are initiated in the 65-85 km altitude range and observed to propagate both down and up at velocities normally in the 10-5 × 10 m/s range. Sprite streamer heads are small, typically less than a few hundreds of meters, but very bright and appear in images much like stars with signals up to that expected of a magnitude −6 star. Many details of streamer formation have been modeled and successfully compared with observations. Streamers frequently split into multiple sub-streamers. The splitting is very fast. To resolve details will require framing rates higher than the maximum 32,000 fps used so far. Sprite streamers are similar to streamers observed in the laboratory and, although many features appear to obey simple scaling laws, recent work indicates that there are limits to the scaling. [ABSTRACT FROM AUTHOR] AB - Copyright of Surveys in Geophysics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC discharges KW - SPRITES (Atmospheric lightning) KW - MESOSPHERE KW - ATMOSPHERIC radiation KW - LIGHTNING KW - COMPARATIVE studies KW - Electric discharges KW - Lightning KW - Mesosphere KW - Sprites KW - Streamers N1 - Accession Number: 91734050; Stenbaek-Nielsen, H. 1; Email Address: hnielsen@gi.alaska.edu Kanmae, T. 1; Email Address: tkammae@gi.alaska.edu McHarg, M. 2; Email Address: Matthew.Mcharg@usafa.edu Haaland, R. 3; Email Address: haaland_r@fortlewis.edu; Affiliation: 1: Geophysical Institute, University of Alaska, 903 Koyukuk Drive Fairbanks USA 2: The United States Air Force Academy, Colorado Springs USA 3: Fort Lewis College, Durango USA; Source Info: Nov2013, Vol. 34 Issue 6, p769; Subject Term: ELECTRIC discharges; Subject Term: SPRITES (Atmospheric lightning); Subject Term: MESOSPHERE; Subject Term: ATMOSPHERIC radiation; Subject Term: LIGHTNING; Subject Term: COMPARATIVE studies; Author-Supplied Keyword: Electric discharges; Author-Supplied Keyword: Lightning; Author-Supplied Keyword: Mesosphere; Author-Supplied Keyword: Sprites; Author-Supplied Keyword: Streamers; Number of Pages: 27p; Document Type: Article L3 - 10.1007/s10712-013-9224-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91734050&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ramesh, Kiran AU - Gopalarathnam, Ashok AU - Edwards, Jack AU - Ol, Michael AU - Granlund, Kenneth T1 - An unsteady airfoil theory applied to pitching motions validated against experiment and computation. JO - Theoretical & Computational Fluid Dynamics JF - Theoretical & Computational Fluid Dynamics Y1 - 2013/11// VL - 27 IS - 6 M3 - Article SP - 843 EP - 864 PB - Springer Science & Business Media B.V. SN - 09354964 AB - An inviscid theoretical method that is applicable to non-periodic motions and that accounts for large amplitudes and non-planar wakes (large-angle unsteady thin airfoil theory) is developed. A pitch-up, hold, pitch-down motion for a flat plate at Reynolds number 10,000 is studied using this theoretical method and also using computational (immersed boundary method) and experimental (water tunnel) methods. Results from theory are compared against those from computation and experiment which are also compared with each other. The variation of circulatory and apparent-mass loads as a function of pivot location for this motion is examined. The flow phenomena leading up to leading-edge vortex shedding and the limit of validity of the inviscid theory in the face of vortex-dominated flows are investigated. Also, the effect of pitch amplitude on leading-edge vortex shedding is examined, and two distinctly different vortex-dominated flows are studied using dye flow visualizations from experiment and vorticity plots from computation. [ABSTRACT FROM AUTHOR] AB - Copyright of Theoretical & Computational Fluid Dynamics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INVISCID flow KW - AEROFOILS KW - PITCHING (Aerodynamics) KW - UNSTEADY flow (Aerodynamics) KW - LEADING edges (Aerodynamics) KW - Airfoil aerodynamics KW - Leading-edge vortex KW - Unsteady aerodynamics N1 - Accession Number: 90672957; Ramesh, Kiran 1; Email Address: kramesh2@ncsu.edu Gopalarathnam, Ashok 1; Email Address: ashok_g@ncsu.edu Edwards, Jack 1; Email Address: jredward@ncsu.edu Ol, Michael 2; Email Address: Michael.Ol@wpafb.af.mil Granlund, Kenneth 2; Email Address: Kenneth.Granlund.ctr@wpafb.af.mil; Affiliation: 1: Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh 27695-7910 USA 2: U.S. Air Force Research Laboratory, Air Vehicles Directorate, WPAFB, AFRL/RBAL, Bldg. 45, 2130 8th St. Dayton 45433-7542 USA; Source Info: Nov2013, Vol. 27 Issue 6, p843; Subject Term: INVISCID flow; Subject Term: AEROFOILS; Subject Term: PITCHING (Aerodynamics); Subject Term: UNSTEADY flow (Aerodynamics); Subject Term: LEADING edges (Aerodynamics); Author-Supplied Keyword: Airfoil aerodynamics; Author-Supplied Keyword: Leading-edge vortex; Author-Supplied Keyword: Unsteady aerodynamics; Number of Pages: 22p; Document Type: Article L3 - 10.1007/s00162-012-0292-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90672957&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - HARRINGTON, KATHLEEN T1 - Fire and Forget. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2013/11// VL - 25 M3 - Short Story SP - 131 EP - 136 PB - US Air Force Academy English Department SN - 10466967 AB - The short story "Fire and Forget," by Kathleen Harrington is presented. KW - VETERANS in literature KW - HARRINGTON, Kathleen KW - FIRE & Forget (Short story) N1 - Accession Number: 90667157; HARRINGTON, KATHLEEN 1; Affiliation: 1: Head, English & Fine Arts Department, United States Air Force Academy; Source Info: 2013, Vol. 25, p131; Subject Term: VETERANS in literature; Reviews & Products: FIRE & Forget (Short story); People: HARRINGTON, Kathleen; Number of Pages: 6p; Document Type: Short Story UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90667157&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - PIPES, CANDICE L. T1 - Flashes of War: a conversation with Katey Schultz. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2013/11// VL - 25 M3 - Interview SP - 139 EP - 147 PB - US Air Force Academy English Department SN - 10466967 AB - An interview with author Katey Schultz is presented. She relates what motivated her to write "Flashes of War," a collection of short stories about war and whether she sees herself as an activist. Schultz discusses the difference between fiction and journalism, and what she thinks fiction can offer in terms of the truth about war. KW - WOMEN authors KW - WAR in literature KW - JOURNALISM KW - FICTION KW - INTERVIEWS KW - SCHULTZ, Katey -- Interviews KW - FLASHES of War (Book) N1 - Accession Number: 90667158; PIPES, CANDICE L. 1; Affiliation: 1: Assistant Professor of English, United States Air Force Academy; Source Info: 2013, Vol. 25, p139; Subject Term: WOMEN authors; Subject Term: WAR in literature; Subject Term: JOURNALISM; Subject Term: FICTION; Subject Term: INTERVIEWS; Reviews & Products: FLASHES of War (Book); People: SCHULTZ, Katey -- Interviews; Number of Pages: 9p; Document Type: Interview UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90667158&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Lawrence, David T1 - FOBBIT. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2013/11// VL - 25 M3 - Interview SP - 160 EP - 170 PB - US Air Force Academy English Department SN - 10466967 AB - An interview with author David Abrams is presented. He talks about his war novel "Fobbit" and comments on critics who say that his novel has similarities with the classic "Catch-22," by Joseph Heller. Abrams cites the reasons behind the phenomenon of the publication of war novels emerging from operations in Iraq and Afghanistan. He also comments on his attack on the West Point in his book. KW - AUTHORS KW - WAR stories KW - BATTLE of West Point, Ga., 1865 KW - INTERVIEWS KW - ABRAMS, David -- Interviews KW - FOBBIT (Book) N1 - Accession Number: 90667160; Lawrence, David 1; Affiliation: 1: United States Air Force Academy; Source Info: 2013, Vol. 25, p160; Subject Term: AUTHORS; Subject Term: WAR stories; Subject Term: BATTLE of West Point, Ga., 1865; Subject Term: INTERVIEWS; Reviews & Products: FOBBIT (Book); NAICS/Industry Codes: 711513 Independent writers and authors; NAICS/Industry Codes: 711510 Independent Artists, Writers, and Performers; People: ABRAMS, David -- Interviews; Number of Pages: 11p; Document Type: Interview UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90667160&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Sukach, M. K. T1 - WAR REPORTER. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2013/11// VL - 25 M3 - Interview SP - 172 EP - 182 PB - US Air Force Academy English Department SN - 10466967 AB - An interview with author Dan O'Brien is presented. He talks about his book "War Reporter," his debut collection of poems based in part on the memoir "Where War Lives," by war journalist Paul Watson. O'Brien comments on the complex anthropological and existential questions addressed in the book. When asked what differentiates poems from photos, he says that poetry is personal and that are so much about consciousness, memory, the internal life of a man who's lived an externalized life. KW - AUTHORS KW - POETRY (Literary form) KW - MEMOIRS KW - INTERVIEWS KW - O'BRIEN, Dan -- Interviews KW - WATSON, Paul KW - WAR Reporter (Book) N1 - Accession Number: 90667161; Sukach, M. K. 1; Affiliation: 1: Active duty officer, United States Air Force; Source Info: 2013, Vol. 25, p172; Subject Term: AUTHORS; Subject Term: POETRY (Literary form); Subject Term: MEMOIRS; Subject Term: INTERVIEWS; Reviews & Products: WAR Reporter (Book); NAICS/Industry Codes: 711513 Independent writers and authors; NAICS/Industry Codes: 711510 Independent Artists, Writers, and Performers; People: O'BRIEN, Dan -- Interviews; People: WATSON, Paul; Number of Pages: 11p; Document Type: Interview UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90667161&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - SUKACH, M. K. T1 - Eye of the Needle. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2013/11// VL - 25 M3 - Poem SP - 262 EP - 262 PB - US Air Force Academy English Department SN - 10466967 AB - The poem "Eye of the Needle," by M. K. Sukach is presented. First Line: That's bullshit, man. No one wants; Last Line: safe passage through the aperture of your sight. KW - SUKACH, M. K. KW - EYE of the Needle (Poem) N1 - Accession Number: 90667196; SUKACH, M. K. 1; Affiliation: 1: Active duty officer, United States Air Force; Source Info: 2013, Vol. 25, p262; Reviews & Products: EYE of the Needle (Poem); People: SUKACH, M. K.; Number of Pages: 1p; Document Type: Poem UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90667196&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - SUKACH, M. K. T1 - War Story. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2013/11// VL - 25 M3 - Poem SP - 263 EP - 263 PB - US Air Force Academy English Department SN - 10466967 AB - The poem "War Story," by M. K. Sukach is presented. First Line: "What used to get me were the guys that been, maybe, once. Last Line: while he stood fumbling to find the spot for the Star over his heart." KW - SUKACH, M. K. KW - WAR Story (Poem) N1 - Accession Number: 90667197; SUKACH, M. K. 1; Affiliation: 1: Active duty officer, United States Air Force; Source Info: 2013, Vol. 25, p263; Reviews & Products: WAR Story (Poem); People: SUKACH, M. K.; Number of Pages: 1p; Document Type: Poem UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90667197&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - SUKACH, M. K. T1 - Platoon. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2013/11// VL - 25 M3 - Poem SP - 264 EP - 264 PB - US Air Force Academy English Department SN - 10466967 AB - The poem "Platoon," by M. K. Sukach is presented. First Line: That's the gunner, with his drinking paycheck already half spent; Last Line: saying something that quiets the crew, who turn, eyes up, ready. KW - SUKACH, M. K. KW - PLATOON (Poem) N1 - Accession Number: 90667198; SUKACH, M. K. 1; Affiliation: 1: Active duty officer, United States Air Force; Source Info: 2013, Vol. 25, p264; Reviews & Products: PLATOON (Poem); People: SUKACH, M. K.; Number of Pages: 1p; Document Type: Poem UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90667198&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - HONEYWELL, CLAUDIA T1 - Street Life. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2013/11// VL - 25 M3 - Article SP - 274 EP - 280 PB - US Air Force Academy English Department SN - 10466967 AB - The article focuses on the challenges facing homeless war veterans in the U.S. It discusses "The Callapse of American Criminal Justice," a seminal work by Harvard Law School professor William Stuntz which focuses on the criminal justice system's prioritizing of procedure over principle and which has implications for the legalities of federal assistance programs like the U.S. Department of Veterans Affairs (VA). KW - HOMELESS veterans KW - CRIMINAL law KW - CRIMINAL justice administration -- United States KW - UNITED States KW - UNITED States. Dept. of Veterans Affairs KW - STUNTZ, William N1 - Accession Number: 90667205; HONEYWELL, CLAUDIA 1; Affiliation: 1: United States Air Force Academy; Source Info: 2013, Vol. 25, p274; Subject Term: HOMELESS veterans; Subject Term: CRIMINAL law; Subject Term: CRIMINAL justice administration -- United States; Subject Term: UNITED States; Company/Entity: UNITED States. Dept. of Veterans Affairs; NAICS/Industry Codes: 923140 Administration of Veterans' Affairs; People: STUNTZ, William; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90667205&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heim, D.M. AU - Schleich, W.P. AU - Alsing, P.M. AU - Dahl, J.P. AU - Varro, S. T1 - Tunneling of an energy eigenstate through a parabolic barrier viewed from Wigner phase space. JO - Physics Letters A JF - Physics Letters A Y1 - 2013/10/30/ VL - 377 IS - 31-33 M3 - Article SP - 1822 EP - 1825 SN - 03759601 AB - Abstract: We analyze the tunneling of a particle through a repulsive potential resulting from an inverted harmonic oscillator in the quantum mechanical phase space described by the Wigner function. In particular, we solve the partial differential equations in phase space determining the Wigner function of an energy eigenstate of the inverted oscillator. The reflection or transmission coefficients R or T are then given by the total weight of all classical phase-space trajectories corresponding to energies below, or above the top of the barrier given by the Wigner function. [Copyright &y& Elsevier] AB - Copyright of Physics Letters A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HARMONIC oscillators KW - TRAJECTORIES (Mechanics) KW - EIGENVALUES KW - PARTIAL differential equations KW - COEFFICIENTS (Statistics) KW - REFLECTANCE KW - QUANTUM mechanics KW - Inverted oscillator KW - Tunneling KW - Wigner function N1 - Accession Number: 89117536; Heim, D.M. 1; Email Address: dennis.heim@uni-ulm.de Schleich, W.P. 1 Alsing, P.M. 2 Dahl, J.P. 3 Varro, S. 4; Affiliation: 1: Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQ 2: Information Directorate, Air Force Research Laboratory, Rome, NY 13441, USA 3: Chemical Physics, Department of Chemistry, Technical University of Denmark, DTU 207, DK-2800 Kgs. Lyngby, Denmark 4: Wigner Research Centre for Physics, Hungarian Academy of Sciences, Institute for Solid State Physics and Optics, 1525 Budapest, Hungary; Source Info: Oct2013, Vol. 377 Issue 31-33, p1822; Subject Term: HARMONIC oscillators; Subject Term: TRAJECTORIES (Mechanics); Subject Term: EIGENVALUES; Subject Term: PARTIAL differential equations; Subject Term: COEFFICIENTS (Statistics); Subject Term: REFLECTANCE; Subject Term: QUANTUM mechanics; Author-Supplied Keyword: Inverted oscillator; Author-Supplied Keyword: Tunneling; Author-Supplied Keyword: Wigner function; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.physleta.2013.05.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89117536&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Choi, Sukwon AU - Heller, Eric AU - Dorsey, Donald AU - Vetury, Ramakrishna AU - Graham, Samuel T1 - The impact of mechanical stress on the degradation of AlGaN/GaN high electron mobility transistors. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/10/28/ VL - 114 IS - 16 M3 - Article SP - 164501 EP - 164501-10 PB - American Institute of Physics SN - 00218979 AB - Coupled electro-thermo-mechanical simulation and Raman thermometry were utilized to analyze the evolution of mechanical stress in AlGaN/GaN high electron mobility transistors (HEMTs). This combined analysis was correlated with electrical step stress tests to determine the influence of mechanical stress on the degradation of actual devices under diverse bias conditions. It was found that the total stress as opposed to one dominant stress component correlated the best with the degradation of the HEMT devices. These results suggest that minimizing the total stress as opposed to the inverse piezoelectric stress in the device is necessary in order to avoid device degradation which can be accomplished through various growth methods. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DECOMPOSITION (Chemistry) KW - ALUMINUM gallium nitride KW - RESEARCH KW - GALLIUM compounds KW - METAL compounds KW - HIGH electron mobility transistors N1 - Accession Number: 91764246; Choi, Sukwon 1 Heller, Eric 2 Dorsey, Donald 2 Vetury, Ramakrishna 3 Graham, Samuel 1; Affiliation: 1: Woodruff School of Mechanical Engineering, Georgia institute of Technology, Atlanta, Georgia 30332, 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, 3: Power Broadband Business Unit, RFMD, Charlotte, North Carolina 28269,; Source Info: Oct2013, Vol. 114 Issue 16, p164501; Subject Term: DECOMPOSITION (Chemistry); Subject Term: ALUMINUM gallium nitride; Subject Term: RESEARCH; Subject Term: GALLIUM compounds; Subject Term: METAL compounds; Subject Term: HIGH electron mobility transistors; Number of Pages: 1p; Illustrations: 2 Diagrams, 2 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.4826524 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91764246&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Louzguine-Luzgin, Dmitri V. AU - Miracle, Daniel B. AU - Louzguina-Luzgina, Larissa AU - Inoue, Akihisa T1 - Response to 'Comment on 'Comparative analysis of glass-formation in binary, ternary, and multicomponent alloys'' [J. Appl. Phys. 114, 166101 (2013)]. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/10/28/ VL - 114 IS - 16 M3 - Opinion SP - 166102 EP - 166102-2 PB - American Institute of Physics SN - 00218979 AB - The authors present a reply to the article "Comment on 'Comparative analysis of glass-formation in binary, ternary, and multicomponent alloys.'" They discuss the similarities and variance between the cluster-plus-glue-atom (CPGA) and efficient cluster packing (ECP) models. Subjective variances between the CPGA and ECP models made in the comment by L. J. Luo and C. Dong appear to come from alterations made to the ECP model after it was first presented nearly 10 years ago. KW - COMPARATIVE studies KW - GLASS KW - BINARY metallic systems KW - TERNARY alloys KW - LUO, L. J. N1 - Accession Number: 91764212; Louzguine-Luzgin, Dmitri V. 1 Miracle, Daniel B. 2 Louzguina-Luzgina, Larissa 1 Inoue, Akihisa 1; Affiliation: 1: WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, 2230 Tenth Street, Wright-Patterson AFB, Ohio 45433-7817,; Source Info: Oct2013, Vol. 114 Issue 16, p166102; Subject Term: COMPARATIVE studies; Subject Term: GLASS; Subject Term: BINARY metallic systems; Subject Term: TERNARY alloys; NAICS/Industry Codes: 416340 Paint, glass and wallpaper merchant wholesalers; NAICS/Industry Codes: 238150 Glass and Glazing Contractors; NAICS/Industry Codes: 327214 Glass manufacturing; People: LUO, L. J.; Number of Pages: 1p; Document Type: Opinion L3 - 10.1063/1.4826620 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91764212&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pandey, R. B. AU - Farmer, B. L. T1 - Distinction in binding of peptides (P2E) and its mutations (P2G, P2Q) to a graphene sheet via a hierarchical coarse-grained Monte Carlo simulation. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2013/10/28/ VL - 139 IS - 16 M3 - Article SP - 164901 EP - 164901-6 PB - American Institute of Physics SN - 00219606 AB - A hierarchical coarse-grained approach is used to study the binding of peptides (P2E: 1E2P3L4Q5L6K7M) and variants (P2G: 1G2P3L4Q5L6K7M and P2Q: 1Q2L3P4M5E6K7L) with a graphene sheet. Simulation-based residue-substrate and hydropathy index-based residue-residue interaction is used as input to a phenomenological interaction potential for peptide chains to execute the stochastic motion with a graphene sheet at the center of a box. Large-scale Monte Carlo simulations are performed at a range (low to high) of temperatures to identify peptides binding with the graphene sheet with a constant peptide concentration (Cp = 0.01). A number of local (energy, mobility, and substrate contact profiles) and global (density profiles, mean square displacement of the center of mass of a peptide and its radius of gyration) physical quantities are examined to monitor the patterns. We find that each peptide can bind to a graphene sheet at low temperatures but the residues that can anchor their binding vary among these three peptides. For example, P2E is anchored by 1E, 4Q, and 6K, P2Q by 1Q, 5E, and 6K, and P2G by nearly all its residues with about the same strength except 1G and 2P. The site-specific binding is reflected in the thermal response of the radius of gyration of the peptides. Despite the lack of a large difference in binding patterns, a systematic variation in radius of gyration and surface binding profile with the temperature reveals the distinction in their binding: the probability of P2E binding is the highest and that of P2G is the lowest. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PEPTIDES KW - RESEARCH KW - GRAPHENE KW - MONTE Carlo method KW - PROTEINS KW - LOW temperatures N1 - Accession Number: 91763994; Pandey, R. B. 1 Farmer, B. L. 2; Affiliation: 1: Department of Physics and Astronomy, University of Southern Mississippi, Hattiesburg, Mississippi 39406-0001, 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433,; Source Info: Oct2013, Vol. 139 Issue 16, p164901; Subject Term: PEPTIDES; Subject Term: RESEARCH; Subject Term: GRAPHENE; Subject Term: MONTE Carlo method; Subject Term: PROTEINS; Subject Term: LOW temperatures; Number of Pages: 1p; Illustrations: 1 Diagram, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.4825370 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91763994&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chandra, Yenny AU - Wiebe, Richard AU - Stanciulescu, Ilinca AU - Virgin, Lawrence N. AU - Spottswood, Stephen M. AU - Eason, Thomas G. T1 - Characterizing dynamic transitions associated with snap-through of clamped shallow arches. JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2013/10/28/ VL - 332 IS - 22 M3 - Article SP - 5837 EP - 5855 SN - 0022460X AB - Abstract: Slender curved structures can often be found as components of complex structures in civil, mechanical, and aerospace systems. Under extreme loadings, a curved structure might undergo snap-through buckling, i.e., the structure is forced to its inverted configuration, inducing fatigue. Therefore, it is important to identify the stability boundaries of structures and to obtain an accurate description of their performance if the response moves beyond those boundaries. In this paper, a combined experimental–computational framework is used to analyze the transient behavior of clamped–clamped shallow arches. We examine, both experimentally and using Finite Element Analysis (FEA), the response of shallow arches under harmonic distributed loading. Various types of responses are identified and regions in the forcing parameter space that lead to snap-through and chaotic responses are determined. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DYNAMICAL systems KW - FINITE element method KW - CLAMPING circuits KW - ARCHES KW - CHAOS theory KW - PERFORMANCE evaluation N1 - Accession Number: 89455079; Chandra, Yenny 1 Wiebe, Richard 2 Stanciulescu, Ilinca 1; Email Address: ilinca.s@rice.edu Virgin, Lawrence N. 2 Spottswood, Stephen M. 3 Eason, Thomas G. 3; Affiliation: 1: Rice University, Department of Civil and Environmental Engineering, Houston, TX 77005, USA 2: Duke University, School of Engineering, Durham, NC 27708, USA 3: Air Force Research Laboratory, Structural Sciences Center, 2790 D. Street, WPAFB, OH, USA; Source Info: Oct2013, Vol. 332 Issue 22, p5837; Subject Term: DYNAMICAL systems; Subject Term: FINITE element method; Subject Term: CLAMPING circuits; Subject Term: ARCHES; Subject Term: CHAOS theory; Subject Term: PERFORMANCE evaluation; NAICS/Industry Codes: 321213 Engineered Wood Member (except Truss) Manufacturing; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.jsv.2013.06.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89455079&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hsu, Paul S. AU - Stauffer, Hans U. AU - Jiang, Naibo AU - Gord, James R. AU - Roy, Sukesh T1 - Direct measurements of collisional Raman line broadening in the S-branch transitions of acetylene (C2H2). JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2013/10/21/ VL - 139 IS - 15 M3 - Article SP - 154201 PB - American Institute of Physics SN - 00219606 AB - We report direct measurements of the self- and N2-broadened Raman S-branch linewidths of acetylene (C2H2), obtained by employing time-resolved picosecond rotational coherent anti-Stokes Raman scattering spectroscopy. Using broadband 115-ps pump and Stokes pulses (∼135 cm-1 bandwidth) and a spectrally narrowed 90-ps probe pulse (∼0.2 cm-1 bandwidth), Raman-coherence lifetimes are measured at room temperature for the S-branch (ΔJ = +2) transitions associated with rotational quantum number J = 3-25. These directly measured Raman-coherence lifetimes, when converted to collisional linewidth broadening coefficients, differ from the previously reported broadening coefficients extracted from theoretical calculations by 6%-35% for self-broadening for C2H2 and by up to 60% for N2-broadened C2H2. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACETYLENE KW - RESEARCH KW - ALKYNES KW - CARBON compounds KW - HYDROGEN KW - NONMETALS N1 - Accession Number: 91552587; Hsu, Paul S. 1 Stauffer, Hans U. 1 Jiang, Naibo 1 Gord, James R. 2 Roy, Sukesh 1; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, Ohio 45431, 2: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, Ohio 45433,; Source Info: Oct2013, Vol. 139 Issue 15, p154201; Subject Term: ACETYLENE; Subject Term: RESEARCH; Subject Term: ALKYNES; Subject Term: CARBON compounds; Subject Term: HYDROGEN; Subject Term: NONMETALS; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 6p; Illustrations: 1 Diagram, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.4824859 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91552587&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kramb, R.C. AU - Ward, L.T. AU - Jensen, K.E. AU - Vaia, R.A. AU - Miracle, D.B. T1 - Structural property comparison of Ca–Mg–Zn glasses to a colloidal proxy system. JO - Acta Materialia JF - Acta Materialia Y1 - 2013/10/15/ VL - 61 IS - 18 M3 - Article SP - 6911 EP - 6917 SN - 13596454 AB - Abstract: We compare various structural properties of the Ca–Mg–Zn ternary metallic glass system at compositions Ca60Mg X Zn40−X (where X =25, 20, 15, 10) to a colloidal proxy system containing “Red”, “Green” and “Blue” particles at the corresponding compositions R60G X B40−X . The methacrylate-based polymer colloid particles have the same relative radius ratio as their atomic counterparts and surface electrostatic charges are employed to mimic atomic interactions. The structures of these colloidal suspensions are investigated through laser scanning confocal microscopy, with each particle species labeled with red, green and blue fluorescent dyes. We find qualitative agreement with number densities and many characteristics of the partial radial distribution functions and partial coordination numbers between the atomic and colloid systems. In general, coordination numbers agree within experimental error. Total coordination numbers for Red-centered clusters are found to be slightly higher than the corresponding Ca-centered clusters, while Green- and Blue-centered clusters have slightly fewer neighbors than Mg- and Zn-centered clusters. These and other differences are noted and possible explanations of these are offered, as well as ways that the proxy system might be improved to more accurately reproduce the structure of the metallic system. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC glasses -- Testing KW - COLLOIDAL crystals KW - METHACRYLATES KW - POLYMER colloids KW - ELECTROSTATIC fields KW - CONFOCAL microscopy KW - Amorphous materials KW - Colloids KW - Metallic glasses KW - Ternary glasses N1 - Accession Number: 90313737; Kramb, R.C. 1,2; Email Address: ryan.kramb.ctr@wpafb.af.mil Ward, L.T. 3 Jensen, K.E. 4 Vaia, R.A. 1 Miracle, D.B. 1; Affiliation: 1: AFRL/RX Materials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: UES, Dayton, OH 45432, USA 3: Department of Material Science and Engineering, Northwestern University, Evanston, IL 60201, USA 4: Department of Physics, Harvard University, Cambridge, MA 02138, USA; Source Info: Oct2013, Vol. 61 Issue 18, p6911; Subject Term: METALLIC glasses -- Testing; Subject Term: COLLOIDAL crystals; Subject Term: METHACRYLATES; Subject Term: POLYMER colloids; Subject Term: ELECTROSTATIC fields; Subject Term: CONFOCAL microscopy; Author-Supplied Keyword: Amorphous materials; Author-Supplied Keyword: Colloids; Author-Supplied Keyword: Metallic glasses; Author-Supplied Keyword: Ternary glasses; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.actamat.2013.08.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90313737&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hay, R.S. AU - Mogilevsky, P. AU - Boakye, E. T1 - Phase transformations in xenotime rare-earth orthophosphates. JO - Acta Materialia JF - Acta Materialia Y1 - 2013/10/15/ VL - 61 IS - 18 M3 - Article SP - 6933 EP - 6947 SN - 13596454 AB - Abstract: Xenotime rare-earth orthophosphates were made with compositions close to the xenotime–monazite phase boundary. Stress-driven phase transformations and their associated deformation mechanisms were characterized for these compositions by extensive conventional and high-resolution transmission electron microscopy. Three phase transformations were identified beneath indentations in polycrystalline TbPO4, in deformation bands in (Gd0.4Dy0.6)PO4 fiber coatings after fiber push-out, and in polycrystalline (Gd0.3Tb0.7)PO4: xenotime→monazite, xenotime→anhydrite, and anhydrite→monazite. A structure with many alternating monolayers of {010} xenotime and (010) anhydrite was common, along with structures with larger and variable lamellar thickness. The xenotime→anhydrite transformation occurs by b =½〈100〉{010} slip of xenotime. However, the occasional presence of other habit planes suggests there are other transformation mechanisms. Atom shuffles were calculated for all observed transformations. Shuffles required for the anhydrite→monazite transformation are smaller than those for xenotime→monazite. This suggests that the preferred pathway for the xenotime→monazite transformation may have an anhydrite intermediate. Anhydrite also transformed to monazite in areas where high compatibility stress during (120) and (102) anhydrite deformation twinning was inferred. Monazite–anhydrite interphase boundaries and (120) anhydrite twin boundaries were mobile at room temperature under electron beam illumination. Xenotime rare-earth orthophosphates with compositions close to the monazite stability field are suggested also to be close to the monazite–xenotime–anhydrite phase-stability triple point. Transformation and deformation mechanisms are discussed. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHASE transformations (Physics) KW - XENOTIME KW - RARE earths KW - ORTHOPHOSPHATES KW - MONAZITE KW - STRAINS & stresses (Mechanics) KW - ELECTRON beams KW - Phase transformations KW - TEM KW - Transformation mechanisms (Oxides) KW - Transformation plasticity N1 - Accession Number: 90313739; Hay, R.S. 1; Email Address: Randall.Hay@wpafb.af.mil Mogilevsky, P. 1,2 Boakye, E. 1,2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH 45433, USA 2: UES Inc., Dayton, OH 45432, USA; Source Info: Oct2013, Vol. 61 Issue 18, p6933; Subject Term: PHASE transformations (Physics); Subject Term: XENOTIME; Subject Term: RARE earths; Subject Term: ORTHOPHOSPHATES; Subject Term: MONAZITE; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ELECTRON beams; Author-Supplied Keyword: Phase transformations; Author-Supplied Keyword: TEM; Author-Supplied Keyword: Transformation mechanisms (Oxides); Author-Supplied Keyword: Transformation plasticity; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.actamat.2013.08.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90313739&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ni, Binbin AU - Li, Feng AU - Li, Xiaoning AU - Fu, Zhengping AU - Zhu, Yanwu AU - Lu, Yalin T1 - Ethanol assisted synthesis of anatase nanobelts with improved crystallinity and photocatalytic activity. JO - Applied Surface Science JF - Applied Surface Science Y1 - 2013/10/15/ VL - 283 M3 - Article SP - 175 EP - 180 SN - 01694332 AB - Highlights: [•] Ethanol assisted synthesis of TiO2 nanobelts. [•] Improved anatase crystallinity. [•] Higher photocatalytic activity. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Surface Science is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ETHANOL KW - SYNTHESIS (Chemistry) KW - TITANIUM dioxide KW - NANOBELTS KW - CRYSTALLINITY KW - PHOTOCATALYSIS KW - Crystallinity KW - Ethanol KW - Photocatalytic activity KW - TiO2 nanobelt N1 - Accession Number: 90005872; Ni, Binbin 1 Li, Feng 1 Li, Xiaoning 1 Fu, Zhengping 1; Email Address: fuzp@ustc.edu.cn Zhu, Yanwu 1 Lu, Yalin 1,2,3; Email Address: yllu@ustc.edu.cn; Affiliation: 1: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, PR China 2: Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230026, PR China 3: Laser Optics Research Center, US Air Force Academy, CO 80840, USA; Source Info: Oct2013, Vol. 283, p175; Subject Term: ETHANOL; Subject Term: SYNTHESIS (Chemistry); Subject Term: TITANIUM dioxide; Subject Term: NANOBELTS; Subject Term: CRYSTALLINITY; Subject Term: PHOTOCATALYSIS; Author-Supplied Keyword: Crystallinity; Author-Supplied Keyword: Ethanol; Author-Supplied Keyword: Photocatalytic activity; Author-Supplied Keyword: TiO2 nanobelt; NAICS/Industry Codes: 312140 Distilleries; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325193 Ethyl Alcohol Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.apsusc.2013.06.076 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90005872&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gingras, Alexa AU - Sarette, Joseph AU - Shawler, Evan AU - Lee, Taeyoung AU - Freund, Steve AU - Holwitt, Eric AU - Hicks, Barry W. T1 - Fluorescent proteins as biosensors by quenching resonance energy transfer from endogenous tryptophan: Detection of nitroaromatic explosives. JO - Biosensors & Bioelectronics JF - Biosensors & Bioelectronics Y1 - 2013/10/15/ VL - 48 M3 - Article SP - 251 EP - 257 SN - 09565663 AB - Abstract: Ensuring domestic safety from terrorist attack is a daunting challenge because of the wide array of chemical agents that must be screened. A panel of purified fluorescent protein isoforms (FPs) was screened for the ability to detect various explosives, explosive simulants, and toxic agents. In addition to their commonly used visible excitation wavelengths, essentially all FPs can be excited by UV light at 280nm. Ultraviolet illumination excites electrons in endogenous tryptophan (W) residues, which then relax by Förster Resonance Energy Transfer (FRET) to the chromophore of the FP, and thus the FPs emit with their typical visible spectra. Taking advantage of the fact that tryptophan excitation can be quenched by numerous agents, including nitroaromatics like TNT and nitramines like RDX, it is demonstrated that quenching of visible fluorescence from UV illumination of FPs can be used as the basis for detecting these explosives and explosive degradation products. This work provides the foundation for production of an array of genetically-modified FPs for in vitro biosensors capable of rapid, simultaneous, sensitive and selective detection of a wide range of explosive or toxic agents. [Copyright &y& Elsevier] AB - Copyright of Biosensors & Bioelectronics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUORESCENT proteins KW - BIOSENSORS KW - QUENCHING (Chemistry) KW - FLUORESCENCE resonance energy transfer KW - TRYPTOPHAN KW - NITROAROMATIC compounds KW - TERRORISM KW - Explosive KW - Fluorescent protein KW - FRET KW - RDX KW - TNT KW - Vapor N1 - Accession Number: 89279018; Gingras, Alexa 1 Sarette, Joseph 1 Shawler, Evan 1 Lee, Taeyoung 1 Freund, Steve 1 Holwitt, Eric 1 Hicks, Barry W. 1; Email Address: barry.hicks@usafa.edu; Affiliation: 1: Department of Chemistry, US Air Force Academy, USAFA, CO 80840, USA; Source Info: Oct2013, Vol. 48, p251; Subject Term: FLUORESCENT proteins; Subject Term: BIOSENSORS; Subject Term: QUENCHING (Chemistry); Subject Term: FLUORESCENCE resonance energy transfer; Subject Term: TRYPTOPHAN; Subject Term: NITROAROMATIC compounds; Subject Term: TERRORISM; Author-Supplied Keyword: Explosive; Author-Supplied Keyword: Fluorescent protein; Author-Supplied Keyword: FRET; Author-Supplied Keyword: RDX; Author-Supplied Keyword: TNT; Author-Supplied Keyword: Vapor; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.bios.2013.03.076 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89279018&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dorn, Ronald I. AU - Gordon, Steven J. AU - Allen, Casey D. AU - Cerveny, Niccole AU - Dixon, John C. AU - Groom, Kaelin M. AU - Hall, Kevin AU - Harrison, Emma AU - Mol, Lisa AU - Paradise, Thomas R. AU - Sumner, Paul AU - Thompson, Tyler AU - Turkington, Alice V. T1 - The role of fieldwork in rock decay research: Case studies from the fringe. JO - Geomorphology JF - Geomorphology Y1 - 2013/10/15/ VL - 200 M3 - Article SP - 59 EP - 74 SN - 0169555X AB - Abstract: Researchers exploring rock decay hail from chemistry, engineering, geography, geology, paleoclimatology, soil science, and other disciplines and use laboratory, microscopic, theoretical, and field-based strategies. We illustrate here how the tradition of fieldwork forms the core knowledge of rock decay and continues to build on the classic research of Blackwelder, Bryan, Gilbert, Jutson, King, Linton, Twidale, and von Humboldt. While development of nonfield-based investigation has contributed substantially to our understanding of processes, the wide range of environments, stone types, and climatic variability encountered raises issues of temporal and spatial scales too complex to fit into attempts at universal modeling. Although nonfield methods are immensely useful for understanding overarching processes, they can miss subtle differences in factors that ultimately shape rock surfaces. We, therefore, illustrate here how the tradition of fieldwork continues today alongside laboratory and computer-based investigations and contributes to our understanding of rock decay processes. This includes the contribution of fieldwork to the learning process of undergraduates, the calculation of activation energies of plagioclase and olivine dissolution, the high Arctic, the discovery of a new global carbon sink, the influence of plant roots, an analysis of the need for protocols, tafoni development, stone monuments, and rock coatings. These compiled vignettes argue that, despite revolutionary advances in instrumentation, rock decay research must remain firmly footed in the field. [Copyright &y& Elsevier] AB - Copyright of Geomorphology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ROCKS KW - RESEARCH KW - GEOMORPHOLOGY -- Research KW - PALEOCLIMATOLOGY KW - SOIL science KW - OLIVINE KW - DISSOLUTION (Chemistry) KW - Chemical weathering KW - Education KW - Fieldwork KW - Geomorphology KW - Physical weathering KW - Weathering N1 - Accession Number: 90522446; Dorn, Ronald I. 1; Email Address: ronald.dorn@asu.edu Gordon, Steven J. 2 Allen, Casey D. 3 Cerveny, Niccole 4 Dixon, John C. 5 Groom, Kaelin M. 5 Hall, Kevin 6 Harrison, Emma 1 Mol, Lisa 7 Paradise, Thomas R. 5 Sumner, Paul 8 Thompson, Tyler 1 Turkington, Alice V. 9; Affiliation: 1: School of Geographical Sciences and Urban Planning, Box 875302, Arizona State University, Tempe, AZ 85287–5302, USA 2: Department of Economics and Geography, United States Air Force Academy, 2354 Fairchild Drive, Colorado Springs, CO 80840–6299, USA 3: Department of Geography and Environmental Sciences, University of Colorado Denver, P.O. Box 173364, Campus Box 172, Denver, CO 80217–3364, USA 4: Cultural Sciences Department, Mesa Community College, 7110 East McKellips Road, Mesa, AZ 85207, USA 5: Department of Geosciences, University of Arkansas, Fayetteville, AR 72701, USA 6: Department of Geography, University of Northern British Columbia, Prince George, British Columbia, Canada V2N 4Z9 7: School of Geography and the Environment, South Parks Road, University of Oxford, OX1 3QY, UK 8: Department of Geography, Geoinfomatics and Meteorology, University of Pretoria, South Africa 9: Department of Geography, University of Kentucky, 1457 Patterson Office Tower, Lexington, KY 40506–0027, USA; Source Info: Oct2013, Vol. 200, p59; Subject Term: ROCKS; Subject Term: RESEARCH; Subject Term: GEOMORPHOLOGY -- Research; Subject Term: PALEOCLIMATOLOGY; Subject Term: SOIL science; Subject Term: OLIVINE; Subject Term: DISSOLUTION (Chemistry); Author-Supplied Keyword: Chemical weathering; Author-Supplied Keyword: Education; Author-Supplied Keyword: Fieldwork; Author-Supplied Keyword: Geomorphology; Author-Supplied Keyword: Physical weathering; Author-Supplied Keyword: Weathering; NAICS/Industry Codes: 212325 Clay and Ceramic and Refractory Minerals Mining; NAICS/Industry Codes: 212326 Shale, clay and refractory mineral mining and quarrying; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.geomorph.2012.12.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90522446&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jordan, Jennifer AU - Siviour, Clive AU - Sunny, George AU - Bramlette, Craig AU - Spowart, Jonathan T1 - Strain rate-dependant mechanical properties of OFHC copper. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2013/10/15/ VL - 48 IS - 20 M3 - Article SP - 7134 EP - 7141 PB - Springer Science & Business Media B.V. SN - 00222461 AB - The mechanical properties of high purity copper have been extensively studied in the literature, with yield and flow stresses measured as a function of strain rate, grain size, and temperature. This paper presents a comprehensive study of the strain rate and grain size dependence of the mechanical properties of OFHC copper, including an investigation of the previously observed upturn in rate dependence of flow stress at high rates of strain (≥500 s-1). As well as a comprehensive review of the literature, an experimental study is presented investigating the mechanical properties of OFHC copper across a range of strain rates from 10-3 to 105s-1, in which the copper samples were designed to minimize the effects of inertia in the testing. The experimental data from this study are compared with multiple sources from the literature varying strain rate and grain size to understand the differences between experimental results on nominally the same material. It is observed that the OFHC copper in this study showed a similar increase in flow stress with strain rate seen by other researchers at high strain rates. The major contribution to the variation between experimental results from different studies is most likely the starting internal structure for the materials, which is dependent on cold working, annealing temperature, and annealing time. In addition, the experimental variation within a particular study at a given strain rate may be due to small variations in the internal structure and the strain rate history. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COPPER -- Research KW - METALS -- Mechanical properties KW - STRAIN rate (Materials science) KW - RESEARCH KW - GRAIN size KW - LITERATURE reviews KW - MATERIALS science research KW - METHODOLOGY N1 - Accession Number: 89397663; Jordan, Jennifer 1; Email Address: jennifer.jordan@afosr.af.mil Siviour, Clive 2 Sunny, George 1 Bramlette, Craig 1 Spowart, Jonathan 3; Affiliation: 1: Air Force Research Laboratory, Eglin AFB 32542 USA 2: Department of Engineering Science, University of Oxford, Parks Road Oxford UK 3: Air Force Research Laboratory, Wright-Patterson AFB USA; Source Info: Oct2013, Vol. 48 Issue 20, p7134; Subject Term: COPPER -- Research; Subject Term: METALS -- Mechanical properties; Subject Term: STRAIN rate (Materials science); Subject Term: RESEARCH; Subject Term: GRAIN size; Subject Term: LITERATURE reviews; Subject Term: MATERIALS science research; Subject Term: METHODOLOGY; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; Number of Pages: 8p; Illustrations: 1 Black and White Photograph, 1 Diagram, 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1007/s10853-013-7529-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89397663&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bhamare, Sagar AU - Ramakrishnan, Gokul AU - Mannava, Seetha R. AU - Langer, Kristina AU - Vasudevan, Vijay K. AU - Qian, Dong T1 - Simulation-based optimization of laser shock peening process for improved bending fatigue life of Ti–6Al–2Sn–4Zr–2Mo alloy. JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2013/10/15/ VL - 232 M3 - Article SP - 464 EP - 474 SN - 02578972 AB - Abstract: Laser shock peening (LSP) induced residual stresses significantly affect the high cycle fatigue behavior of certain metals and alloys. Residual stress distribution is a function of various laser parameters (energy, laser pulse width, and spot diameter), the geometry, the material and the laser shot sequencing. Considering the wide range of parameters involved in the LSP process, a numerical approach based on 3D nonlinear finite element method has been employed to explore the relation between the processing parameters and the residual stress distribution. This methodology is applied to a thin coupon of Ti–6Al–2Sn–4Zr–2Mo (Ti-6242) alloy, with a view towards establishing conditions for obtaining through-thickness compressive residual stresses and hence improved bending fatigue life. Material response at very high strain rates in the LSP process is effectively represented using the modified Zerilli–Armstrong material model. The numerical approach is verified by comparison with the experimental results. Effects of laser parameters and laser shot sequencing on final residual stress distribution are studied by performing full scale simulations of LSP patches constituting a large number of laser shots. Based on simulation studies, optimal set of parameters is obtained that produces through thickness compression, which leads to a substantial improvement in bending fatigue life. Fatigue testing results support the recommendations made based on simulation results. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM-aluminum alloys KW - LASER peening KW - BENDING (Metalwork) KW - METALS -- Fatigue KW - SIMULATION methods & models KW - RESIDUAL stresses KW - FINITE element method KW - Fatigue life KW - Finite element method KW - Laser shock peening KW - Residual stresses KW - Ti-6242 N1 - Accession Number: 90102695; Bhamare, Sagar 1 Ramakrishnan, Gokul 1 Mannava, Seetha R. 1 Langer, Kristina 2 Vasudevan, Vijay K. 1 Qian, Dong 3; Email Address: dong.qian@utdallas.edu; Affiliation: 1: School of Dynamic Systems, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH 45221, USA 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH 45433, USA 3: Department of Mechanical Engineering, University of Texas at Dallas, Richardson, TX 75080, USA; Source Info: Oct2013, Vol. 232, p464; Subject Term: TITANIUM-aluminum alloys; Subject Term: LASER peening; Subject Term: BENDING (Metalwork); Subject Term: METALS -- Fatigue; Subject Term: SIMULATION methods & models; Subject Term: RESIDUAL stresses; Subject Term: FINITE element method; Author-Supplied Keyword: Fatigue life; Author-Supplied Keyword: Finite element method; Author-Supplied Keyword: Laser shock peening; Author-Supplied Keyword: Residual stresses; Author-Supplied Keyword: Ti-6242; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.surfcoat.2013.06.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90102695&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dickerson, Matthew B. AU - Fillery, Scott P. AU - Koerner, Hilmar AU - Singh, Kristi M. AU - Martinick, Katie AU - Drummy, Lawrence F. AU - Durstock, Michael F. AU - Vaia, Richard A. AU - Omenetto, Fiorenzo G. AU - Kaplan, David L. AU - Naik, Rajesh R. T1 - Dielectric Breakdown Strength of Regenerated SilkFibroin Films as a Function of Protein Conformation. JO - Biomacromolecules JF - Biomacromolecules Y1 - 2013/10/14/ VL - 14 IS - 10 M3 - Article SP - 3509 EP - 3514 SN - 15257797 AB - Derived from Bombyxmoricocoons,regenerated silk fibroin (RSF) exhibits excellent biocompatibility,high toughness, and tailorable biodegradability. Additionally, RSFmaterials are flexible, optically clear, easily patterned with nanoscalefeatures, and may be doped with a variety bioactive species. Thisunique combination of properties has led to increased interest inthe use of RSF in sustainable and biocompatible electronic devices.In order to explore the applicability of this biopolymer to the developmentof future bioelectronics, the dielectric breakdown strength (Ebd) of RSF thin films was quantified as a functionof protein conformation. The application of processing conditionsthat increased β-sheet content (as determined by FTIR analysis)and produced films in the silk II structure resulted in RSF materialswith improved Ebdwith values reachingup to 400 V/μm. [ABSTRACT FROM AUTHOR] AB - Copyright of Biomacromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRIC breakdown KW - SILK fibroin KW - PROTEIN conformation KW - SILKWORMS KW - THIN films -- Electric properties KW - FOURIER transform infrared spectroscopy KW - ELECTRONIC apparatus & appliances N1 - Accession Number: 91556485; Dickerson, Matthew B. 1 Fillery, Scott P. 1 Koerner, Hilmar 1 Singh, Kristi M. 1 Martinick, Katie 1 Drummy, Lawrence F. 1 Durstock, Michael F. 1 Vaia, Richard A. 1 Omenetto, Fiorenzo G. 1 Kaplan, David L. 1 Naik, Rajesh R. 1; Affiliation: 1: †Materialsand Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433; Source Info: Oct2013, Vol. 14 Issue 10, p3509; Subject Term: DIELECTRIC breakdown; Subject Term: SILK fibroin; Subject Term: PROTEIN conformation; Subject Term: SILKWORMS; Subject Term: THIN films -- Electric properties; Subject Term: FOURIER transform infrared spectroscopy; Subject Term: ELECTRONIC apparatus & appliances; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 112999 All other miscellaneous animal production; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91556485&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ard, Shaun G. AU - Melko, Joshua J. AU - Jiang, Bin AU - Li, Yongle AU - Shuman, Nicholas S. AU - Guo, Hua AU - Viggiano, Albert A. T1 - Temperature dependences for the reactions of O2- and O- with N and O atoms in a selected-ion flow tube instrument. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2013/10/14/ VL - 139 IS - 14 M3 - Article SP - 144302 PB - American Institute of Physics SN - 00219606 AB - Rate constants for the reactions of O2- and O- with N and O atoms have been measured for the first time as a function of temperature from 173 to 500 K for O- reactions and 173 to 400 K for O2- reactions. Room temperature rate constants for O2- reacting with N and O are 3.1 × 10-10 and 1.7 × 10-10 cm3 s-1, respectively, and the corresponding O- rate constants are 1.7 × 10-10 and 1.5 × 10-10 cm3 s-1, in good agreement with previous values. Temperature dependences are about T-1.7 for both O2- reactions and T-0.6 and T-1.3 for the reactions of O- with N and O, respectively. Branching for the O2- reaction with N is found to predominantly form O- (>85%) in contrast to previous measurements, which reported NO2 + e- as the main channel. Calculations point to the present results being correct. The potential energy surface for this reaction was calculated using density functional theory, coupled cluster with singles, doubles (triples), complete active space self-consistent field, and complete active space second-order perturbation methods and is found to be quite complex, with agreement between the calculated surface and the observed kinetic data only possible through the inclusion of dynamical correlation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POTENTIAL energy surfaces KW - MATHEMATICAL models KW - PERTURBATION (Mathematics) KW - CLUSTER analysis (Statistics) KW - OXYGEN KW - RESEARCH KW - NITROGEN N1 - Accession Number: 90679573; Ard, Shaun G. 1 Melko, Joshua J. 1 Jiang, Bin 2 Li, Yongle 2 Shuman, Nicholas S. 1 Guo, Hua 2 Viggiano, Albert A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117-5776, 2: Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131,; Source Info: Oct2013, Vol. 139 Issue 14, p144302; Subject Term: POTENTIAL energy surfaces; Subject Term: MATHEMATICAL models; Subject Term: PERTURBATION (Mathematics); Subject Term: CLUSTER analysis (Statistics); Subject Term: OXYGEN; Subject Term: RESEARCH; Subject Term: NITROGEN; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 6p; Illustrations: 1 Diagram, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.4824018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90679573&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, B.E. AU - Cazacu, O. T1 - Experimental and theoretical investigation of the high-pressure, undrained response of a cohesionless sand. JO - International Journal for Numerical & Analytical Methods in Geomechanics JF - International Journal for Numerical & Analytical Methods in Geomechanics Y1 - 2013/10/10/ VL - 37 IS - 14 M3 - Article SP - 2321 EP - 2347 SN - 03639061 AB - SUMMARY Key in predicting stability in sands during dynamic events is gaining a fundamental understanding of the physics of its deformation and failure at high pressures. In this paper are reported results of an experimental investigation into the high-pressure (up to 700 MPa) mechanical response of Quikrete sand. During all triaxial compression tests, the material exhibited hardening up to failure while both compressibility and dilatancy regimes of the volumetric response were observed. Furthermore, the transition from compressibility to dilatancy was found to be highly dependent on confining pressure. By performing triaxial compression tests with several creep stages followed by unloading-reloading cycles, the time influence of the overall response was detected. Using the experimental data, a new model that captures both compressibility and dilatancy has been developed. Comparison between model predictions and data showed that the proposed model describes well the main characteristics of the high-pressure response of sand. Copyright © 2012 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal for Numerical & Analytical Methods in Geomechanics is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SAND KW - RESEARCH KW - COMPRESSIBILITY KW - VISCOPLASTICITY KW - DEFORMATIONS (Mechanics) KW - CREEP (Materials) KW - compressibility KW - conventional triaxial compression KW - creep KW - high pressure KW - sand KW - undrained KW - viscoplasticity N1 - Accession Number: 90096079; Martin, B.E. 1 Cazacu, O. 2; Affiliation: 1: Air Force Research Laboratory, Eglin AFB 2: Department of Mechanical and Aerospace Engineering, University of Florida REEF; Source Info: Oct2013, Vol. 37 Issue 14, p2321; Subject Term: SAND; Subject Term: RESEARCH; Subject Term: COMPRESSIBILITY; Subject Term: VISCOPLASTICITY; Subject Term: DEFORMATIONS (Mechanics); Subject Term: CREEP (Materials); Author-Supplied Keyword: compressibility; Author-Supplied Keyword: conventional triaxial compression; Author-Supplied Keyword: creep; Author-Supplied Keyword: high pressure; Author-Supplied Keyword: sand; Author-Supplied Keyword: undrained; Author-Supplied Keyword: viscoplasticity; NAICS/Industry Codes: 484232 Dry bulk materials trucking, long distance; NAICS/Industry Codes: 484222 Dry bulk materials trucking, local; NAICS/Industry Codes: 423320 Brick, Stone, and Related Construction Material Merchant Wholesalers; NAICS/Industry Codes: 212321 Construction Sand and Gravel Mining; NAICS/Industry Codes: 416390 Other specialty-line building supplies merchant wholesalers; Number of Pages: 27p; Document Type: Article L3 - 10.1002/nag.2143 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90096079&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huidong Zang AU - Liang Yan AU - Mingxing Li AU - Lei He AU - Zheng Gai AU - Ilia Ivanov AU - Min Wang AU - Long Chiang AU - Augustine Urbas AU - Bin Hu T1 - Magneto-Dielectric Effects Induced by Optically-Generated Intermolecular Charge-Transfer States in Organic Semiconducting Materials. JO - Scientific Reports JF - Scientific Reports Y1 - 2013/10/02/ M3 - Article SP - 1 EP - 6 SN - 20452322 AB - Traditionally, magneto-dielectric effects have been developed by combining ferroelectric and magnetic materials. Here, we show a magneto-dielectric effect from optically-generated intermolecular charge-transfer states in an organic semiconducting donor:acceptor (PVK:TCNB) system. We observe in magnetic field effects of photoluminescence that a magnetic field can change singlet/triplet population ratio in intermolecular charge-transfer states. Furthermore, our theoretical analysis and experimental evidence indicate that the singlets and triplets in charge-transfer states have stronger and weaker electrical polarizations, respectively. Therefore, the observed magneto-dielectric effect can be attributed to magnetically-dependent singlet/triplet ratio in intermolecular charge-transfer states. In principle, a magneto-dielectric effect can be generated through two different channels based on magneto-polarization and magneto-current effects when the singlet/triplet ratio in intermolecular charge-transfer states is changed by a magnetic field. We find, from the simulation of dielectric effects, that magneto-polarization and magneto-current effects play primary and secondary roles in the generation of magneto-dielectric effect. [ABSTRACT FROM AUTHOR] AB - Copyright of Scientific Reports is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETO KW - SEMICONDUCTORS KW - FERROELECTRIC crystals KW - PHOTOLUMINESCENCE KW - POLARIZATION (Economics) N1 - Accession Number: 91642414; Huidong Zang 1 Liang Yan 1 Mingxing Li 1 Lei He 1 Zheng Gai 2 Ilia Ivanov 2 Min Wang 3 Long Chiang 3 Augustine Urbas 4 Bin Hu 1; Email Address: bhu@utk.edu; Affiliation: 1: Department of Materials Science and Engineering, University of Tennessee - Knoxville Tennessee 37996, USA 2: Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 3: Department of Chemistry, Institute of Nanoscience and Engineering Technology, University of Massachusetts, Lowell, Massachusetts 01854, USA 4: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio, USA; Source Info: 10/2/2013, p1; Subject Term: MAGNETO; Subject Term: SEMICONDUCTORS; Subject Term: FERROELECTRIC crystals; Subject Term: PHOTOLUMINESCENCE; Subject Term: POLARIZATION (Economics); NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1038/srep02812 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91642414&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Joseph AU - Michael, James AU - Slipchenko, Mikhail AU - Roy, Sukesh AU - Meyer, Terrence AU - Gord, James T1 - Simultaneous high-speed planar imaging of mixture fraction and velocity using a burst-mode laser. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2013/10// VL - 113 IS - 1 M3 - Article SP - 93 EP - 97 PB - Springer Science & Business Media B.V. SN - 09462171 AB - Simultaneous high-speed quantitative imaging of mixture fraction and velocity is demonstrated using the fourth- and second-harmonic outputs, respectively, of a burst-mode Nd:YAG laser. A tenfold increase in the record length and 16-fold increase in per-pulse energy are achieved compared with previous measurements of mixture fraction using burst-mode and continuously pulsed diode-pumped solid-state lasers, respectively. The high output energy is used for quantitative, high-speed mixture-fraction imaging with acetone planar laser-induced fluorescence, which also enables simultaneous particle-based velocimetry without interference from particle scattering. A semiquantitative model is used to determine the limitations on fourth-harmonic output energy due to the effects of transient absorption and thermal phase mismatch over a range of repetition rates. Data are presented for mixing within a turbulent jet (Reynolds number of 15,000) and are validated by comparisons with known turbulent mixing laws and previously published data. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ECHO-planar imaging KW - VELOCITY KW - QUANTITATIVE research KW - NEODYMIUM lasers KW - SECOND harmonic generation KW - SOLID-state lasers KW - ACETONE KW - PARTICLE scattering functions KW - TURBULENT jets (Fluid dynamics) N1 - Accession Number: 91842760; Miller, Joseph Michael, James 1 Slipchenko, Mikhail 2 Roy, Sukesh 2 Meyer, Terrence 1; Email Address: trm@iastate.edu Gord, James 3; Affiliation: 1: Department of Mechanical Engineering, Iowa State University, 2025 Black Engineering Ames 50011 USA 2: Spectral Energies, LLC, 5100 Springfield St., Suite 301 Dayton 45431 USA 3: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB 45433 USA; Source Info: Oct2013, Vol. 113 Issue 1, p93; Subject Term: ECHO-planar imaging; Subject Term: VELOCITY; Subject Term: QUANTITATIVE research; Subject Term: NEODYMIUM lasers; Subject Term: SECOND harmonic generation; Subject Term: SOLID-state lasers; Subject Term: ACETONE; Subject Term: PARTICLE scattering functions; Subject Term: TURBULENT jets (Fluid dynamics); NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1007/s00340-013-5665-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91842760&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Saldanha, Roland J. AU - Pemberton, Adin AU - Shiflett, Patrick AU - Perutka, Jiri AU - Whitt, Jacob T. AU - Ellington, Andrew AU - Lambowitz, Alan M. AU - Kramer, Ryan AU - Taylor, Deborah AU - Lamkin, Thomas J. T1 - Rapid targeted gene disruption in Bacillus anthracis. JO - BMC Biotechnology JF - BMC Biotechnology Y1 - 2013/10// VL - 13 IS - 1 M3 - Article SP - 1 EP - 8 PB - BioMed Central SN - 14726750 AB - Background: Anthrax is a zoonotic disease recognized to affect herbivores since Biblical times and has the widest range of susceptible host species of any known pathogen. The ease with which the bacterium can be weaponized and its recent deliberate use as an agent of terror, have highlighted the importance of gaining a deeper understanding and effective countermeasures for this important pathogen. High quality sequence data has opened the possibility of systematic dissection of how genes distributed on both the bacterial chromosome and associated plasmids have made it such a successful pathogen. However, low transformation efficiency and relatively few genetic tools for chromosomal manipulation have hampered full interrogation of its genome. Results: Group II introns have been developed into an efficient tool for site-specific gene inactivation in several organisms. We have adapted group II intron targeting technology for application in Bacillus anthracis and generated vectors that permit gene inactivation through group II intron insertion. The vectors developed permit screening for the desired insertion through PCR or direct selection of intron insertions using a selection scheme that activates a kanamycin resistance marker upon successful intron insertion. Conclusions: The design and vector construction described here provides a useful tool for high throughput experimental interrogation of the Bacillus anthracis genome and will benefit efforts to develop improved vaccines and therapeutics. [ABSTRACT FROM AUTHOR] AB - Copyright of BMC Biotechnology is the property of BioMed Central and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BACILLUS anthracis KW - ANTHRAX KW - BACILLACEAE diseases KW - HERBIVORES KW - GENOMES KW - GENE silencing KW - GENETICS N1 - Accession Number: 90620638; Saldanha, Roland J. 1 Pemberton, Adin 1 Shiflett, Patrick 2 Perutka, Jiri 3 Whitt, Jacob T. 3 Ellington, Andrew 3 Lambowitz, Alan M. 3 Kramer, Ryan 4,5 Taylor, Deborah 4 Lamkin, Thomas J. 4; Email Address: Thomas.Lamkin@wpafb.af.mil; Affiliation: 1: UES Inc, 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 2: Henry Jackson Foundation, 6720-A Rockledge Drive, Suite 100, Bethesda, MD 20817, 3: Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX 78712-0159, USA 4: Air Force Research Laboratory, Air Force Research Laboratory, 711th HPW/RHXBC, Molecular Signatures Section, 2510 Fifth Street, Area B, Bldg 840, Room W220, Wright-Patterson AFB, OH 45433-7913, USA 5: Department of Molecular Genetics, Biochemistry and Microbiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0524, USA; Source Info: 2013, Vol. 13 Issue 1, p1; Subject Term: BACILLUS anthracis; Subject Term: ANTHRAX; Subject Term: BACILLACEAE diseases; Subject Term: HERBIVORES; Subject Term: GENOMES; Subject Term: GENE silencing; Subject Term: GENETICS; Number of Pages: 8p; Document Type: Article L3 - 10.1186/1472-6750-13-72 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90620638&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - TSENG, CHARLES C. AU - PARTHASARATHY, TRIPLICANE A. AU - SIKORSKI, RUTH L. AU - VISKANTA, RAYMOND AU - MING Y. CHEN T1 - Effect of thermal radiation on the effective thermal conductivity of open-cell SiC foams. JO - High Temperatures -- High Pressures JF - High Temperatures -- High Pressures Y1 - 2013/10// VL - 42 IS - 5 M3 - Article SP - 387 EP - 403 SN - 00181544 AB - To use open-cell foam materials for high temperature applications, thermal radiation may be important or dominate heat transfer in foams; however, the effective thermal conductivity which is one of the most important thermal characteristics of foams is difficult to estimate due to the fact that studies based on detailed thermal radiation analysis are limited. In this paper foams are considered to be semitransparent, because radiation can penetrate through the pore (or void) space and/or foam skeleton (ligament), depending on the materials from which the foams are made. Of particular interest in this study is to create a model that includes the effect of the foam physical properties (such as its density, mean cell size, etc.) on the conductive and the radiative transfer through silicon carbide (SIC) foams for predicting the temperature dependent effective thermal conductivity. In the paper, the dimensionless strut diameter is considered to be an important physical parameter of foams. The attenuation/extinction behavior of SiC foams is considered to be a function of the dimensionless strut diameter of the foam. The results reveal that the foam physical properties can significantly reduce the effective thermal conductivity of the foam used for the thermal protection. [ABSTRACT FROM AUTHOR] AB - Copyright of High Temperatures -- High Pressures is the property of Old City Publishing, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT -- Radiation & absorption KW - RESEARCH KW - HEAT transfer KW - FOAM KW - THERMAL conductivity KW - RADIATIVE transfer KW - SILICON carbide KW - effective thermal conductivity KW - high temperature KW - Open-cell foams KW - silicon carbide KW - thermal protection KW - thermal radiation N1 - Accession Number: 91815803; TSENG, CHARLES C. 1,2 PARTHASARATHY, TRIPLICANE A. 1,2 SIKORSKI, RUTH L. 3 VISKANTA, RAYMOND 4 MING Y. CHEN 1; Email Address: ming-yung.chen@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing, Wright-Patterson AFB, OH 45433, USA 2: UES, Dayton, OH 45432, USA 3: Air Force Research Laboratory, Aerospace System, Wright-Patterson AFB, OH 45433, USA 4: School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA; Source Info: 2013, Vol. 42 Issue 5, p387; Subject Term: HEAT -- Radiation & absorption; Subject Term: RESEARCH; Subject Term: HEAT transfer; Subject Term: FOAM; Subject Term: THERMAL conductivity; Subject Term: RADIATIVE transfer; Subject Term: SILICON carbide; Author-Supplied Keyword: effective thermal conductivity; Author-Supplied Keyword: high temperature; Author-Supplied Keyword: Open-cell foams; Author-Supplied Keyword: silicon carbide; Author-Supplied Keyword: thermal protection; Author-Supplied Keyword: thermal radiation; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 17p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91815803&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Christensen, James C. AU - Estepp, Justin R. T1 - Coadaptive Aiding and Automation Enhance Operator Performance. JO - Human Factors JF - Human Factors Y1 - 2013/10// VL - 55 IS - 5 M3 - Article SP - 965 EP - 975 SN - 00187208 AB - Objective: In this work, we expand on the theory of adaptive aiding by measuring the effectiveness of coadaptive aiding, wherein we explicitly allow for both system and user to adapt to each other. Background: Adaptive aiding driven by psychophysiological monitoring has been demonstrated to be a highly effective means of controlling task allocation and system functioning. Psychophysiological monitoring is uniquely well suited for coadaptation, as malleable brain activity may be used as a continuous input to the adaptive system. Method: To establish the efficacy of the coadaptive system, physiological activation of adaptation was directly compared with manual activation or no activation of the same automation and cuing systems. We used interface adaptations and automation that are plausible for real-world operations, presented in the context of a multi–remotely piloted aircraft control simulation. Each participant completed 3 days of testing during 1 week. Performance was assessed via proportion of targets successfully engaged. Results: In the first 2 days of testing, there were no significant differences in performance between the conditions. However, in the third session, physiological adaptation produced the highest performance. Conclusion: By extending the data collection across multiple days, we offered enough time and repeated experience for user adaptation as well as online system adaptation, hence demonstrating coadaptive aiding. Application: The results of this work may be employed to implement more effective adaptive workstations in a variety of work domains. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEUROERGONOMICS KW - HUMAN-computer interaction KW - PSYCHOPHYSIOLOGY KW - COMPUTER users KW - ADAPTATION (Physiology) KW - COMPUTERS -- Performance KW - TASK performance KW - function allocation KW - human/computer interaction KW - mental workload KW - neuroergonomics N1 - Accession Number: 90378639; Christensen, James C. 1 Estepp, Justin R. 1; Affiliation: 1: Air Force Research Laboratory, Dayton, Ohio; Source Info: Oct2013, Vol. 55 Issue 5, p965; Subject Term: NEUROERGONOMICS; Subject Term: HUMAN-computer interaction; Subject Term: PSYCHOPHYSIOLOGY; Subject Term: COMPUTER users; Subject Term: ADAPTATION (Physiology); Subject Term: COMPUTERS -- Performance; Subject Term: TASK performance; Author-Supplied Keyword: function allocation; Author-Supplied Keyword: human/computer interaction; Author-Supplied Keyword: mental workload; Author-Supplied Keyword: neuroergonomics; Number of Pages: 11p; Document Type: Article L3 - 10.1177/0018720813476883 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90378639&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Raghavan, R. T1 - Analysis of Steering Vector Mismatch on Adaptive Noncoherent Integration. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2013/10// VL - 49 IS - 4 M3 - Article SP - 2496 EP - 2508 SN - 00189251 AB - Amplitude and phase errors can cause mismatches between the hypothesized signal vector and the steering vector of an antenna array. A generalized likelihood ratio test (GLRT) for signal detection with multiple coherent processing intervals (CPIs) in unknown interference is derived. The detection performance of the resulting adaptive noncoherent integration (NCI) algorithm is analyzed along with the effect of steering vector mismatch on detection performance. Detection performance and the effect of steering vector mismatch are illustrated with results for both a nonfluctuating signal model and a CPI-to-CPI fluctuating signal model. It is shown that a signal-to-interference-plus-noise ratio (SINR) loss factor inherent to the algorithm in effect limits the performance gain due to NCI of mismatched signals. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNA arrays KW - SIGNAL detection KW - LIKELIHOOD ratio tests KW - SIGNAL-to-noise ratio KW - RADAR signal processing KW - TRACKING algorithms N1 - Accession Number: 90678121; Raghavan, R. 1; Affiliation: 1: Air Force Research Laboratory; Source Info: Oct2013, Vol. 49 Issue 4, p2496; Subject Term: ANTENNA arrays; Subject Term: SIGNAL detection; Subject Term: LIKELIHOOD ratio tests; Subject Term: SIGNAL-to-noise ratio; Subject Term: RADAR signal processing; Subject Term: TRACKING algorithms; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1109/TAES.2013.6621831 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90678121&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, Kristopher T. AU - Kramer, Brad A. T1 - Direct Determination of the T-Matrix From a MoM Impedance Matrix Computed Using the Rao-Wilton-Glisson Basis Function. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2013/10// VL - 61 IS - 10 M3 - Article SP - 5324 EP - 5327 SN - 0018926X AB - We present an explicit and numerically exact method for determining the T matrix of an arbitrarily shaped PEC object directly from a MoM impedance matrix that is generated with the Rao-Wilton-Glisson basis function for use in multiple-scattering calculations. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - T-matrix KW - IMPEDANCE matrices KW - RADIAL basis functions KW - MULTIPLE scattering (Physics) -- Mathematical models KW - NUMERICAL analysis KW - Antennas KW - Electromagnetic scattering KW - Impedance KW - Impedance matrix KW - Method of moments KW - numerical technique KW - Rao-Wilton-Glisson basis function KW - scattering KW - T matrix KW - Transmission line matrix methods KW - Vectors N1 - Accession Number: 90678240; Kim, Kristopher T. 1 Kramer, Brad A. 1; Affiliation: 1: Antenna Technology Branch, Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB,; Source Info: Oct2013, Vol. 61 Issue 10, p5324; Subject Term: T-matrix; Subject Term: IMPEDANCE matrices; Subject Term: RADIAL basis functions; Subject Term: MULTIPLE scattering (Physics) -- Mathematical models; Subject Term: NUMERICAL analysis; Author-Supplied Keyword: Antennas; Author-Supplied Keyword: Electromagnetic scattering; Author-Supplied Keyword: Impedance; Author-Supplied Keyword: Impedance matrix; Author-Supplied Keyword: Method of moments; Author-Supplied Keyword: numerical technique; Author-Supplied Keyword: Rao-Wilton-Glisson basis function; Author-Supplied Keyword: scattering; Author-Supplied Keyword: T matrix; Author-Supplied Keyword: Transmission line matrix methods; Author-Supplied Keyword: Vectors; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TAP.2013.2273485 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90678240&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rossler, Carl W. AU - Patton, Lee Kenneth AU - Himed, Braham T1 - Rapid, near-optimal waveform adaptation: precompute and lookup via hash functions. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2013/10// VL - 7 IS - 8 M3 - Article SP - 925 EP - 932 PB - Institution of Engineering & Technology SN - 17518784 AB - The authors propose a novel library-based waveform adaptation method which allows rapid, near-optimal, waveform adaptation for a broad set of applications. The authors refer to their method as precompute-and-lookup (PAL). In contrast to existing library-based methods, which must evaluate each waveform in the library in order to determine the most suitable waveform, the authors' method employs hash functions. With the authors' method, the computational complexity of waveform adaptation is solely determined by the chosen hash function, and does not grow with library size. The authors apply PAL to the problem of waveform adaptation for target detection in the presence of additive coloured Gaussian noise under practical constraints. Monte Carlo simulations show that PAL is capable of producing near-optimal waveforms. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVE analysis KW - RADAR KW - RANDOM noise theory KW - MONTE Carlo method KW - COMPUTATIONAL complexity N1 - Accession Number: 97414280; Rossler, Carl W. 1; Email Address: rossler.3@osu.edu Patton, Lee Kenneth 2 Himed, Braham 3; Affiliation: 1: Electrical and Computer Engineering, Ohio State University, 2015 Neil Avenue, Columbus, OH 43210, USA 2: Matrix Research & Engineering, 1300 Research Park Drive, Dayton, OH 45432, USA 3: RYMD, Air Force Research Laboratory, 2241 Avionics Circle, Bldg 620, Dayton, OH 45433, USA; Source Info: Oct2013, Vol. 7 Issue 8, p925; Subject Term: WAVE analysis; Subject Term: RADAR; Subject Term: RANDOM noise theory; Subject Term: MONTE Carlo method; Subject Term: COMPUTATIONAL complexity; Number of Pages: 8p; Document Type: Article L3 - 10.1049/iet-rsn.2012.0316 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97414280&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kyle, Brent T1 - Punishing and atoning: a new critique of penal substitution. JO - International Journal for Philosophy of Religion JF - International Journal for Philosophy of Religion Y1 - 2013/10// VL - 74 IS - 2 M3 - Article SP - 201 EP - 218 PB - Springer Science & Business Media B.V. SN - 00207047 AB - The doctrine of penal substitution claims that it was good (or required) for God to punish in response to human sin, and that Christ received this punishment in our stead. I argue that this doctrine's central factual claim-that Christ was punished by God-is mistaken. In order to punish someone, one must at least believe the recipient is responsible for an offense. But God surely did not believe the innocent Christ was responsible for an offense, let alone the offense of human sin. So, the central factual claim is mistaken. In the final section, I show that this critique of penal substitution does not apply to the closely-related Anselmian satisfaction theory. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal for Philosophy of Religion is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PUNISHMENT KW - ATONEMENT KW - SATISFACTION KW - SINS KW - Atonement KW - Penal substitution KW - Punishment KW - Satisfaction theory KW - JESUS Christ N1 - Accession Number: 90428762; Kyle, Brent 1; Email Address: bgk5@cornell.edu; Affiliation: 1: Department of Philosophy, United States Air Force Academy, HQ USAFA/DFPY, 2354 Fairchild Drive USAF Academy 80840 USA; Source Info: Oct2013, Vol. 74 Issue 2, p201; Subject Term: PUNISHMENT; Subject Term: ATONEMENT; Subject Term: SATISFACTION; Subject Term: SINS; Author-Supplied Keyword: Atonement; Author-Supplied Keyword: Penal substitution; Author-Supplied Keyword: Punishment; Author-Supplied Keyword: Satisfaction theory; People: JESUS Christ; Number of Pages: 18p; Document Type: Article L3 - 10.1007/s11153-012-9382-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90428762&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, Cheryl Y. AU - Roddy, Patrick A. AU - Sutton, Eric K. AU - Stoneback, Russell AU - Pfaff, Robert F. AU - Gentile, Louise C. AU - Delay, Susan H. T1 - Ion-neutral coupling during deep solar minimum. JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2013/10// VL - 103 M3 - Article SP - 138 EP - 146 SN - 13646826 AB - Abstract: The equatorial ionosphere under conditions of deep solar minimum exhibits structuring due to tidal forces. Data from instruments carried by the Communication/Navigation Outage Forecasting System (C/NOFS) which was launched in April 2008 have been analyzed for the first 2 years following launch. The Planar Langmuir Probe (PLP), Ion Velocity Meter (IVM) and Vector Electric Field Investigation (VEFI) all detect periodic structures during the 2008–2010 period which appear to be tides. However when the tidal features detected by these instruments are compared, there are distinctive and significant differences between the observations. Tides in neutral densities measured by the Gravity Recovery and Climate Experiment (GRACE) satellite were also observed during June 2008. In addition, Broad Plasma Decreases (BPDs) appear as a deep absolute minimum in the plasma and neutral density tidal pattern. These are co-located with regions of large downward-directed ion meridional velocities and minima in the zonal drifts, all on the nightside. The region in which BPDs occur coincides with a peak in occurrence rate of dawn depletions in plasma density observed on the Defense Meterological Satellite Program (DMSP) spacecraft, as well as a minimum in radiance detected by UV imagers on the Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) and IMAGE satellites. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSPHERE KW - WATER current meters KW - LANGMUIR probes KW - MESOSPHERE KW - THERMOSPHERE KW - ELECTRIC fields KW - Equatorial ionosphere KW - Nonmigrating tides KW - Plasma depletions KW - Thermosphere N1 - Accession Number: 90214233; Huang, Cheryl Y. 1; Email Address: cheryl.huang@us.af.mil Roddy, Patrick A. 1 Sutton, Eric K. 1 Stoneback, Russell 2 Pfaff, Robert F. 3 Gentile, Louise C. 1 Delay, Susan H. 4; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, NM, USA 2: William B. Hanson Center for Space Sciences, University of Texas at Dallas, Richardson, TX, USA 3: NASA/Goddard Space Flight Center, Greenbelt, MD, USA 4: Institute for Scientific Research, Boston College, Chestnut Hill, MA, USA; Source Info: Oct2013, Vol. 103, p138; Subject Term: IONOSPHERE; Subject Term: WATER current meters; Subject Term: LANGMUIR probes; Subject Term: MESOSPHERE; Subject Term: THERMOSPHERE; Subject Term: ELECTRIC fields; Author-Supplied Keyword: Equatorial ionosphere; Author-Supplied Keyword: Nonmigrating tides; Author-Supplied Keyword: Plasma depletions; Author-Supplied Keyword: Thermosphere; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jastp.2012.11.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90214233&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yizengaw, E. AU - Zesta, E. AU - Biouele, C.M. AU - Moldwin, M.B. AU - Boudouridis, A. AU - Damtie, B. AU - Mebrahtu, A. AU - Anad, F. AU - Pfaff, R.F. AU - Hartinger, M. T1 - Observations of ULF wave related equatorial electrojet and density fluctuations. JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2013/10// VL - 103 M3 - Article SP - 157 EP - 168 SN - 13646826 AB - Abstract: We report on Pc5 wave related electric field and vertical drift velocity oscillations at the equator as observed by ground magnetometers for an extended period on 9 August 2008. We show that the magnetometer-estimated equatorial E×B drift oscillates with the same frequency as ULF Pc5 waves, creating significant ionospheric density fluctuations. We also show ionospheric density fluctuations during the period when we observed ULF wave activity. At the same time, we detect the ULF activity on the ground using ground-based magnetometer data from the African Meridian B-field Education and Research (AMBER) and the South American Meridional B-field Array (SAMBA). From space, we use magnetic field observations from the GOES 12 and the Communication/Navigation Outage and Forecast System (C/NOFS) satellites. Upstream solar wind conditions are provided by the ACE spacecraft. We find that the wave power observed on the ground also occurs in the upstream solar wind and in the magnetosphere. All these observations demonstrate that Pc5 waves with a likely driver in the solar wind can penetrate to the equatorial ionosphere and modulate the equatorial electrodynamics. While no direct drift measurements from equatorial radars exist for the 9 August 2008 event, we used JULIA 150km radar drift velocities observed on 2 May 2010 and found similar fluctuations with the period of 5–8min, as a means of an independent confirmation of our magnetometer derived drift dynamics. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EQUATORIAL electrojet KW - IONOSPHERIC electron density KW - MAGNETOMETERS KW - ELECTRIC fields KW - ELECTRODYNAMICS KW - SOLAR wind KW - Electric field KW - Equatorial electrodynamics KW - Pc5 pulsations KW - ULF waves N1 - Accession Number: 90214235; Yizengaw, E. 1; Email Address: kassie@bc.edu Zesta, E. 2 Biouele, C.M. 3 Moldwin, M.B. 4 Boudouridis, A. 5 Damtie, B. 6 Mebrahtu, A. 7 Anad, F. 8 Pfaff, R.F. 9 Hartinger, M. 10; Affiliation: 1: Institute for Scientific Research, Boston College, Boston, USA 2: Air Force Research Laboratory, AFRL/RVBXP, Kirtland AFB, USA 3: Department of Physics, University of Yaoundé I, Yaoundé, Cameroon 4: Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, USA 5: Space Science Institute, Boulder, CO, USA 6: Washera Geospace and Radar Science Laboratory, Bahir Dar University, Bahir Dar, Ethiopia 7: Department of Physics, Mekelle University, Mekelle, Ethiopia 8: Centre de Recherche en Astronomie Astrophysique et Géophysique, Algiers, Algérie 9: NASA Goddard Space Flight Center, Greenbelt, MD, USA 10: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, USA; Source Info: Oct2013, Vol. 103, p157; Subject Term: EQUATORIAL electrojet; Subject Term: IONOSPHERIC electron density; Subject Term: MAGNETOMETERS; Subject Term: ELECTRIC fields; Subject Term: ELECTRODYNAMICS; Subject Term: SOLAR wind; Author-Supplied Keyword: Electric field; Author-Supplied Keyword: Equatorial electrodynamics; Author-Supplied Keyword: Pc5 pulsations; Author-Supplied Keyword: ULF waves; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.jastp.2013.03.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90214235&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kaszynski, Alex A. AU - Beck, Joseph A. AU - Brown, Jeffrey M. T1 - Uncertainties of an Automated Optical 3D Geometry Measurement, Modeling, and Analysis Process for Mistuned Integrally Bladed Rotor Reverse Engineering. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2013/10// VL - 135 IS - 10 M3 - Article SP - 1 EP - 6 SN - 07424795 AB - An automated reverse engineering process is developed that uses a structured light optical measurement system to collect dense point cloud geometry representations. The modeling process is automated through integration of software for point cloud processing, reverse engineering, solid model creation, grid generation, and structural solution. Process uncertainties are quantified on a calibration block and demonstrated on an academic transonic integrally bladed rotor. These uncertainties are propagated through physics-based models to assess impacts on predicted modal and mistuned forced response. Process details are discussed and recommendations made on reducing uncertainty. Reverse engineered parts averaged a deviation of 0.0002 in. (5 μm) which did not significantly impact low and midrange frequency responses. High frequency modes were found to be sensitive to these uncertainties demonstrating the need for future refinement of reverse engineering processes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GEOMETRY KW - ROTORS KW - REVERSE engineering KW - OPTICAL measurements KW - CLOUD computing KW - COMPUTER software N1 - Accession Number: 91680307; Kaszynski, Alex A. 1; Email Address: Alex.Kasynski@wpafb.af.mil Beck, Joseph A. 1; Email Address: Joseph.Beck@wpafb.af.mil Brown, Jeffrey M. 1; Email Address: JeffreyBrown@wpafb.af.mil; Affiliation: 1: Turbine Engine Division, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433; Source Info: Oct2013, Vol. 135 Issue 10, p1; Subject Term: GEOMETRY; Subject Term: ROTORS; Subject Term: REVERSE engineering; Subject Term: OPTICAL measurements; Subject Term: CLOUD computing; Subject Term: COMPUTER software; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 518210 Data Processing, Hosting, and Related Services; Number of Pages: 8p; Document Type: Article L3 - 10.1115/1.4025000 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91680307&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Behera, A. AU - Nag, S. AU - Mahdak, K. AU - Mohseni, H. AU - Tiley, J. AU - Banerjee, R. T1 - Influence of oxygen ingress on fine scale precipitation of α-Ti during oxidation of Beta21S β-Ti alloy. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2013/10// VL - 48 IS - 19 M3 - Article SP - 6700 EP - 6706 PB - Springer Science & Business Media B.V. SN - 00222461 AB - The formation of a surface oxide layer along with α precipitation in the subsurface oxygen-enriched zone, during the oxidation of a β-Ti alloy, has been investigated using scanning electron microscopy, electron probe micro analysis, X-ray diffraction, (Scanning) transmission electron microscopy, 3D-Atom Probe studies, and nano-indentation. Immediately below the nanocrystalline oxide layer, a two-phase mixture consisting of nanoscale equiaxed α grains and rutile grains are formed. With increasing depth, the α morphology below the oxide layer varied from nanoscale equiaxed to lathlike, coupled with substantial changes in size-scale and nucleation density of α precipitates. A distinct change in the lattice parameters of α and β phases below the oxide layer and the overall micro hardness of the material is also noted. The role of oxygen ingress on the scale and morphology of α precipitation has been discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXIDATION KW - RESEARCH KW - BETA titanium KW - TITANIUM alloys KW - PRECIPITATION (Chemistry) KW - SURFACES (Technology) -- Analysis KW - LAYER structure (Solids) KW - STRUCTURAL analysis (Science) KW - METHODOLOGY N1 - Accession Number: 89078527; Behera, A. 1 Nag, S. 1 Mahdak, K. 1 Mohseni, H. 1 Tiley, J. 2 Banerjee, R. 1; Email Address: Rajarshi.Banerjee@unt.edu; Affiliation: 1: Center for Advanced Research and Technology, Department of Materials Science and Engineering, University of North Texas, Denton 76203 USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton 45309 USA; Source Info: Oct2013, Vol. 48 Issue 19, p6700; Subject Term: OXIDATION; Subject Term: RESEARCH; Subject Term: BETA titanium; Subject Term: TITANIUM alloys; Subject Term: PRECIPITATION (Chemistry); Subject Term: SURFACES (Technology) -- Analysis; Subject Term: LAYER structure (Solids); Subject Term: STRUCTURAL analysis (Science); Subject Term: METHODOLOGY; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 7p; Illustrations: 2 Black and White Photographs, 4 Graphs; Document Type: Article L3 - 10.1007/s10853-013-7470-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89078527&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fehrman Cory, Emily M. AU - Aga Jr., Roberto S. AU - Lombardi III, Jack P. AU - Bartsch, Carrie M. AU - Sarangan, Andrew AU - Heckman, Emily M. T1 - Nanoimprint lithography of deoxyribonucleic acid biopolymer films. JO - Journal of Micro/Nanolithography, MEMS & MOEMS JF - Journal of Micro/Nanolithography, MEMS & MOEMS Y1 - 2013/10//Oct-Dec2013 VL - 12 IS - 4 M3 - Article SP - 040501-1 EP - 040501-3 SN - 19325150 AB - Thermal nanoimprint lithography (NIL) is presented as an alternative fabrication technique for patterning deoxyribonucleic acid (DNA) biopolymer films for photonic device applications. The techniques and procedures developed for directly imprinting optical waveguide structures on a DNA biopolymer using NIL, bypassing the use of a resist layer and any chemical processing, are outlined here. The fabrication technique was developed with a Nanonex NX-2600 NIL flexible membrane system. Additionally, a process for using a Suss MicroTec ELAN CB6L substrate bonder is discussed as an alternative to commercially available NIL systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Micro/Nanolithography, MEMS & MOEMS is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOIMPRINT lithography KW - WAVEGUIDES KW - DNA KW - BIOPOLYMERS KW - ELECTROOPTICS KW - deoxyribonucleic acid biopolymer KW - inverted ridge waveguide KW - nanoimprint lithography N1 - Accession Number: 93916180; Fehrman Cory, Emily M. 1; Email Address: emily.fehrmancory.ctr@wpafb.af.mil Aga Jr., Roberto S. 2 Lombardi III, Jack P. 2 Bartsch, Carrie M. 2 Sarangan, Andrew 1 Heckman, Emily M. 2; Affiliation: 1: University of Dayton, Electro-Optics Department, Dayton, Ohio 45469 2: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433; Source Info: Oct-Dec2013, Vol. 12 Issue 4, p040501-1; Subject Term: NANOIMPRINT lithography; Subject Term: WAVEGUIDES; Subject Term: DNA; Subject Term: BIOPOLYMERS; Subject Term: ELECTROOPTICS; Author-Supplied Keyword: deoxyribonucleic acid biopolymer; Author-Supplied Keyword: inverted ridge waveguide; Author-Supplied Keyword: nanoimprint lithography; Number of Pages: 3p; Document Type: Article L3 - 10.1117/1.JMM.12.4.040501 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93916180&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - MEYER, J. K. AU - HEINRICH, J. R. AU - KIM, S.-H. AU - MERLINO, R. L. T1 - Interaction of a biased cylinder with a flowing dusty plasma. JO - Journal of Plasma Physics JF - Journal of Plasma Physics Y1 - 2013/10// VL - 79 IS - 5 M3 - Article SP - 677 EP - 682 SN - 00223778 AB - Experimental observations of supersonically flowing dusty plasmas and their interaction with an electrically biased circular cylinder are presented. Two methods for producing flowing dusty plasmas are described. The dusty plasma is produced in a DC anode glow discharge plasma. In Configuration I, a secondary dust cloud, initially formed near a biased grid, flowed away from the grid at supersonic speeds when the grid voltage was suddenly changed. In Configuration II, a pencil-like dust beam was produced using a nozzle-like (converging-diverging) electrostatic potential structure. Using Configuration I, the streaming dust encountered a biased cylinder (wire) whose axis was oriented transverse to the dust flow. The flowing dust particles were repelled by the electrostatic field of the negatively charged cylinder, and a dust void was formed around the cylinder. A detached electrohydrodynamic bow shock, akin to the Earth's magnetohydrodynamic bow shock, was formed on the upstream side of the cylinder, while an extended teardrop-shaped wake region was formed on the downstream side. Video imaging of the dust stream allowed for observations of the structure and evolution of the bow shock. Configuration II was used to produce a narrow beam of dust particles and observe how the beam was deflected around the biased cylinder. Three multimedia files (movies) of the observed phenomena are provided in the online Supplementary material. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Plasma Physics is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DUSTY plasmas KW - PHYSICS experiments KW - ULTRASONICS KW - GLOW discharges KW - SUPERSONIC speeds KW - ELECTROSTATIC fields KW - MAGNETOHYDRODYNAMICS N1 - Accession Number: 90262781; MEYER, J. K. 1 HEINRICH, J. R. 2 KIM, S.-H. 1 MERLINO, R. L. 1; Email Address: robert-merlino@uiowa.edu; Affiliation: 1: Department of Physics and Astronomy, The University of Iowa, Iowa City, IA 52242, USA 2: Air Force Research Laboratory, Kirtland AFB, Albuquerque, NM 87117-5776, USA; Source Info: Oct2013, Vol. 79 Issue 5, p677; Subject Term: DUSTY plasmas; Subject Term: PHYSICS experiments; Subject Term: ULTRASONICS; Subject Term: GLOW discharges; Subject Term: SUPERSONIC speeds; Subject Term: ELECTROSTATIC fields; Subject Term: MAGNETOHYDRODYNAMICS; Number of Pages: 6p; Document Type: Article L3 - 10.1017/S0022377813000299 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90262781&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hsu, Paul S. AU - Kulatilaka, Waruna D. AU - Gord, James R. AU - Roy, Sukesh T1 - Single-shot thermometry using fiber-based picosecond coherent anti-stokes Raman scattering (CARS) spectroscopy. JO - Journal of Raman Spectroscopy JF - Journal of Raman Spectroscopy Y1 - 2013/10// VL - 44 IS - 10 M3 - Article SP - 1330 EP - 1335 SN - 03770486 AB - Coherent anti-Stokes Raman scattering (CARS)-spectroscopy-based thermometry techniques developed for laboratory flames face a stiff challenge when implemented in practical combustion environments such as engine test facilities. In addition to limited optical access, the harsh environments associated with these test facilities (i.e. uncontrolled humidity, vibration, and large thermal gradients) often restrict the operation of sensitive laser systems. To circumvent this problem, we have developed a fiber-based, picosecond (ps) CARS system employing long-length (up to 6 m), multimode silica fibers that permits the laser system to be isolated from the high heat and vibration of the test hardware. Proof-of-principle, single-laser-shot temperature measurements using a 3-m-long fiber system are demonstrated in atmospheric pressure, near-adiabatic, laboratory H2-air flames. Limitations that are imposed by long-length multimode-fiber beam delivery for CARS thermometry are identified as nonlinear effects during beam propagation along the fiber, depolarization of the laser beam, and degradation of the beam quality at the output of the fiber. These effects are investigated in detail, and potential improvements are suggested. The current study shows promise for implementation of fiber-based ps-CARS spectroscopy in harsh environments such as those encountered in combustors and afterburners in practical gas-turbine-engine test facilities. Copyright © 2013 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Raman Spectroscopy is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOMETRY KW - PICOSECOND pulses KW - RAMAN spectroscopy KW - ANTI-Stokes scattering KW - SILICA fibers KW - LASER beams KW - combustion diagnostics KW - fiber optics KW - picosecond coherent anti-stokes Raman scattering N1 - Accession Number: 91557069; Hsu, Paul S. 1 Kulatilaka, Waruna D. 1 Gord, James R. 2 Roy, Sukesh 1; Affiliation: 1: Spectral Energies, LLC 2: Air Force Research Laboratory, Aerospace Systems Directorate; Source Info: Oct2013, Vol. 44 Issue 10, p1330; Subject Term: THERMOMETRY; Subject Term: PICOSECOND pulses; Subject Term: RAMAN spectroscopy; Subject Term: ANTI-Stokes scattering; Subject Term: SILICA fibers; Subject Term: LASER beams; Author-Supplied Keyword: combustion diagnostics; Author-Supplied Keyword: fiber optics; Author-Supplied Keyword: picosecond coherent anti-stokes Raman scattering; Number of Pages: 6p; Document Type: Article L3 - 10.1002/jrs.4280 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91557069&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wrzesinski, Paul J. AU - Stauffer, Hans U. AU - Kulatilaka, Waruna D. AU - Gord, James R. AU - Roy, Sukesh T1 - Time-resolved femtosecond CARS from 10 to 50 Bar: collisional sensitivity. JO - Journal of Raman Spectroscopy JF - Journal of Raman Spectroscopy Y1 - 2013/10// VL - 44 IS - 10 M3 - Article SP - 1344 EP - 1348 SN - 03770486 AB - Femtosecond time-resolved coherent anti-Stokes Raman scattering (CARS) measurements are performed on neat N2 and O2 as well as on N2 in the presence of various collisional partners to examine the effects of collisions on the observed signal at pressures as high as 50 bar. An exponential-gap energy-corrected-sudden (ECS-E) scaling law is used to model the rotational energy transfer of pure N2 at these elevated pressures. After accounting for line-mixing effects, the long-time collisional decay (20-60 picoseconds behavior observed here is consistent with the behavior observed in previous time-resolved CARS studies over the pressure range 0-5 bar. Despite the observation of significant pressure dependence on long-delay timescales, the experimental results demonstrate negligible dependence on pressure and identity of colliding partner during the first 1-3 picoseconds, a time range that has been shown previously to be highly sensitive to temperature. These results suggest that a variety of recently developed time-resolved CARS approaches that allow accurate thermometric measurements to be made over this short 1-3 picosecond range can be used at pressures up to 50 bar without the need to employ models accounting for collisional decay. Copyright © 2013 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Raman Spectroscopy is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MODEL cars (Toys) KW - FEMTOSECOND lasers -- Research KW - FEMTOCHEMISTRY KW - RAMAN effect KW - PICOSECOND pulses -- Measurement KW - ENERGY transfer N1 - Accession Number: 91557081; Wrzesinski, Paul J. 1 Stauffer, Hans U. 2 Kulatilaka, Waruna D. 2 Gord, James R. 3 Roy, Sukesh 2; Affiliation: 1: National Research Council 2: Spectral Energies LLC 3: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB; Source Info: Oct2013, Vol. 44 Issue 10, p1344; Subject Term: MODEL cars (Toys); Subject Term: FEMTOSECOND lasers -- Research; Subject Term: FEMTOCHEMISTRY; Subject Term: RAMAN effect; Subject Term: PICOSECOND pulses -- Measurement; Subject Term: ENERGY transfer; NAICS/Industry Codes: 336111 Automobile Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1002/jrs.4287 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91557081&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Slabakova, Roumyana AU - Cabrelli Amaro, Jennifer AU - Kang, Sang Kyun T1 - Regular and Novel Metonymy in Native Korean, Spanish, and English: Experimental Evidence for Various Acceptability. JO - Metaphor & Symbol JF - Metaphor & Symbol Y1 - 2013/10// VL - 28 IS - 4 M3 - Article SP - 275 EP - 293 PB - Taylor & Francis Ltd SN - 10926488 AB - This article presents results of two off-line comprehension tasks, investigating the acceptability of novel and regular metonymy by speakers of English, Korean, and Spanish. We are interested in uncovering regular–novel metonymy computation discrepancies, and whether they are treated differently in the different languages. The distinction between novel and regular metonymy is discussed by the existing theoretical treatments of metonymy as well as in psycholinguistic research. The findings of this study constitute further experimental support for the psychological reality of this distinction. In addition, it is demonstrated that the speakers of the three languages treat novel and regular metonymy differently. Significant findings are the acceptability of novel metonymy in Korean and the relative lack of conventionalization effect for regular metonymy in Korean and Spanish. We conclude that current theoretical approaches to metonymy should focus more on cross-linguistic differences and that further language comparisons are warranted and needed, in comprehension as well as in processing. [ABSTRACT FROM AUTHOR] AB - Copyright of Metaphor & Symbol is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METONYMS KW - FIGURES of speech KW - LANGUAGE & languages KW - METAPHOR KW - LECTURERS KW - COMPREHENSION N1 - Accession Number: 90412816; Slabakova, Roumyana 1,2; Email Address: r.slabakova@soton.ac.uk Cabrelli Amaro, Jennifer 3 Kang, Sang Kyun 2; Affiliation: 1: University of Southampton 2: University of Iowa 3: United States Air Force Academy; Source Info: 2013, Vol. 28 Issue 4, p275; Subject Term: METONYMS; Subject Term: FIGURES of speech; Subject Term: LANGUAGE & languages; Subject Term: METAPHOR; Subject Term: LECTURERS; Subject Term: COMPREHENSION; NAICS/Industry Codes: 711510 Independent Artists, Writers, and Performers; NAICS/Industry Codes: 711512 Independent actors, comedians and performers; Number of Pages: 19p; Document Type: Article L3 - 10.1080/10926488.2013.826556 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90412816&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Doutt, Daniel R. AU - Balaz, S. AU - Isabella, L. AU - Look, D. C. AU - Leedy, K. D. AU - Brillson, L. J. T1 - Role of native point defects and Ga diffusion on electrical properties of degenerate Ga-doped ZnO. JO - Physica Status Solidi (B) JF - Physica Status Solidi (B) Y1 - 2013/10// VL - 250 IS - 10 M3 - Article SP - 2114 EP - 2117 SN - 03701972 AB - We used a complement of depth-resolved cathodoluminescence spectroscopy (DRCLS), X-ray photoemission spectroscopy (XPS), and Hall-effect measurements to demonstrate the interplay of Zn vacancy-related (VZn-R) defects with dopants in degenerately Ga-doped ZnO grown by pulsed laser deposition. DRCLS VZn-R/conduction band emission ratios relate to acceptor/donor concentrations, increasing rapidly for growth temperatures >400 °C, evidently because Ga atoms are inhibited from incorporating efficiently on available VZn sites. Elemental XPS depth profiles reveal a temperature-dependent Ga interface segregation due to Ga bulk diffusion during growth. DRCLS Fermi level thresholds provide a useful indicator of carrier density, revealing depth variations in carrier density that anticorrelate with VZn-R densities on a nm scale, confirming the acceptor nature of VZn-R defects. [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi (B) is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM (Metal) -- Spectra KW - ZINC oxide -- Electric properties KW - SEMICONDUCTORS -- Materials -- Electric properties KW - PHOTOELECTRON spectroscopy KW - EMISSION spectroscopy KW - PULSED laser deposition KW - HALL effect KW - defect KW - doping KW - TCO KW - ZnO N1 - Accession Number: 90633835; Doutt, Daniel R. 1 Balaz, S. 2 Isabella, L. 1 Look, D. C. 3,4 Leedy, K. D. 5 Brillson, L. J. 1,2; Affiliation: 1: Department of Physics, The Ohio State University 2: Department of Electrical & Computer Engineering, The Ohio State University 3: Semiconductor Research Center, Wright State University 4: Wile Laboratories, Inc. 5: Air Force Research Laboratory; Source Info: Oct2013, Vol. 250 Issue 10, p2114; Subject Term: GALLIUM (Metal) -- Spectra; Subject Term: ZINC oxide -- Electric properties; Subject Term: SEMICONDUCTORS -- Materials -- Electric properties; Subject Term: PHOTOELECTRON spectroscopy; Subject Term: EMISSION spectroscopy; Subject Term: PULSED laser deposition; Subject Term: HALL effect; Author-Supplied Keyword: defect; Author-Supplied Keyword: doping; Author-Supplied Keyword: TCO; Author-Supplied Keyword: ZnO; Number of Pages: 4p; Document Type: Article L3 - 10.1002/pssb.201200945 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90633835&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Look, D. C. AU - Droubay, T. C. AU - Chambers, S. A. T1 - Optical/electrical correlations in Zn O: The plasmonic resonance phase diagram. JO - Physica Status Solidi (B) JF - Physica Status Solidi (B) Y1 - 2013/10// VL - 250 IS - 10 M3 - Article SP - 2118 EP - 2121 SN - 03701972 AB - The Drude equation for dielectric constant ϵ( E) depends on four parameters: ϵ∞, effective mass m*, optical mobility µopt, and optical carrier concentration nopt. By solving this equation at ϵ( Eres) = 0, we obtain a relationship between µopt and nopt at constant plasmonic resonance energy Eres [or wavelength λres (µm) = 1.2395/ Eres (eV)]. A family of µopt versus nopt curves covering a range of λres values (including the limiting wavelength λres = ∞) constitutes a plasmonic resonance phase diagram (PRPD) for a semiconductor defined by only ϵ∞ and m*. The PRPD is a convenient instrument that allows an immediate prediction of λres from Hall-effect measurements of µH and nH. We apply the PRPD analysis to a series of ten ZnO samples grown by pulsed laser deposition at 200 °C in an ambient of 33%H2:67%Ar and annealed in 25 °C steps for 10 min in air at various temperatures from 400 to 600 °C. For the samples annealed at 550 °C or lower, the µH/ nH points yield predicted values of λres that range from 1.07 to 2.80 µm; however, the 575 and 600 °C samples are predicted to have no resonance at all. Reflectance curves for the eight samples annealed up to 550 °C decrease slowly from 6 eV down to about Eres = 0.5-1.15 eV, and then increase rapidly for E < Eres. In contrast, there is no such resonance-related increase for the 575 and 600 °C samples. Satisfactory agreement is found between the reflectance minima and the Hall-effect-predicted values of λres. [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi (B) is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide -- Optical properties KW - ZINC oxide -- Electric properties KW - PLASMONIC Raman sensors KW - RESONANCE effect KW - FREE electron theory of metals KW - PULSED laser deposition KW - Hall effect KW - plasmons KW - reflectance KW - ZnO N1 - Accession Number: 90633845; Look, D. C. 1,2,3 Droubay, T. C. 4 Chambers, S. A. 4; Affiliation: 1: Semiconductor Research Center, Wright State University 2: Wyle Laboratories, Inc. 3: Sensors Directorate, Air Force Research Laboratory 4: Pacific Northwest National Laboratory; Source Info: Oct2013, Vol. 250 Issue 10, p2118; Subject Term: ZINC oxide -- Optical properties; Subject Term: ZINC oxide -- Electric properties; Subject Term: PLASMONIC Raman sensors; Subject Term: RESONANCE effect; Subject Term: FREE electron theory of metals; Subject Term: PULSED laser deposition; Author-Supplied Keyword: Hall effect; Author-Supplied Keyword: plasmons; Author-Supplied Keyword: reflectance; Author-Supplied Keyword: ZnO; Number of Pages: 4p; Document Type: Article L3 - 10.1002/pssb.201200968 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90633845&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kartashov, Daniil AU - Ališauskas, Skirmantas AU - Baltuška, Andrius AU - Schmitt-Sody, Andreas AU - Roach, William AU - Polynkin, Pavel T1 - Remotely pumped stimulated emission at 337 nm in atmospheric nitrogen. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2013/10// VL - 88 IS - 4-A M3 - Article SP - 1 EP - 4 SN - 10502947 AB - We report the observation of forward-propagating UV stimulated emission in atmospheric nitrogen pumped, at a standoff distance of 2.6 m, by an energetic laser pulse at a wavelength of 1053 nm and with the duration in the picosecond range. The generated optical gain at 337 nm is seeded by third harmonic of the pump beam. This demonstration is an important step towards the development of techniques for standoff optical sensing in the atmosphere. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STIMULATED emission KW - ULTRAVIOLET radiation KW - ATMOSPHERIC nitrogen KW - LASERS -- Pumping KW - LASER pulses KW - PICOSECOND pulses KW - OPTICAL sensors N1 - Accession Number: 92522977; Kartashov, Daniil 1 Ališauskas, Skirmantas 1 Baltuška, Andrius 1 Schmitt-Sody, Andreas 2 Roach, William 2 Polynkin, Pavel 3; Email Address: ppolynkin@optics.arizona.edu; Affiliation: 1: Photonics Institute, Vienna University of Technology, A-1040 Vienna, Austria 2: Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, New Mexico 87116, USA 3: College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA; Source Info: Oct2013, Vol. 88 Issue 4-A, p1; Subject Term: STIMULATED emission; Subject Term: ULTRAVIOLET radiation; Subject Term: ATMOSPHERIC nitrogen; Subject Term: LASERS -- Pumping; Subject Term: LASER pulses; Subject Term: PICOSECOND pulses; Subject Term: OPTICAL sensors; Number of Pages: 4p; Document Type: Article L3 - 10.1103/PhysRevA.88.041805 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92522977&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pandey, Ras B. AU - Farmer, Barry L. T1 - Conformational Response to Solvent Interaction and Temperature of a Protein (Histone h3.1) by a Multi-Grained Monte Carlo Simulation. JO - PLoS ONE JF - PLoS ONE Y1 - 2013/10// VL - 8 IS - 10 M3 - Article SP - 1 EP - 9 PB - Public Library of Science SN - 19326203 AB - Interaction with the solvent plays a critical role in modulating the structure and dynamics of a protein. Because of the heterogeneity of the interaction strength, it is difficult to identify multi-scale structural response. Using a coarse-grained Monte Carlo approach, we study the structure and dynamics of a protein (H3.1) in effective solvent media. The structural response is examined as a function of the solvent-residue interaction strength (based on hydropathy index) in a range of temperatures (spanning low to high) involving a knowledge-based (Miyazawa-Jernigan(MJ)) residue-residue interaction. The protein relaxes rapidly from an initial random configuration into a quasi-static structure at low temperatures while it continues to diffuse at high temperatures with fluctuating conformation. The radius of gyration (Rg) of the protein responds non-monotonically to solvent interaction, i.e., on increasing the residue-solvent interaction strength (fs), the increase in Rg (fs≤fsc) is followed by decay (fs≥fsc) with a maximum at a characteristic value (fsc) of the interaction. Raising the temperature leads to wider spread of the distribution of the radius of gyration with higher magnitude of fsc. The effect of solvent on the multi-scale (λ: residue to Rg) structures of the protein is examined by analyzing the structure factor (S(q),|q| = 2π/λ is the wave vector of wavelength, λ) in detail. Random-coil to globular transition with temperature of unsolvated protein (H3.1) is dramatically altered by the solvent at low temperature while a systematic change in structure and scale is observed on increasing the temperature. The interaction energy profile of the residues is not sufficient to predict its mobility in the solvent. Fine-grain representation of protein with two-node and three-node residue enhances the structural resolution; results of the fine-grained simulations are consistent with the finding described above of the coarse-grained description with one-node residue. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTEIN conformation KW - PROTEIN structure KW - MOLECULAR interactions KW - SOLVENTS KW - MONTE Carlo method KW - LOW temperatures KW - RADIUS of gyration KW - Research Article N1 - Accession Number: 94478126; Pandey, Ras B. 1; Email Address: ras.pandey@usm.edu Farmer, Barry L. 2; Affiliation: 1: 1 Department of Physics and Astronomy, University of Southern Mississippi, Hattiesburg, Mississippi, United States of America 2: 2 Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio, United States of America; Source Info: Oct2013, Vol. 8 Issue 10, p1; Subject Term: PROTEIN conformation; Subject Term: PROTEIN structure; Subject Term: MOLECULAR interactions; Subject Term: SOLVENTS; Subject Term: MONTE Carlo method; Subject Term: LOW temperatures; Subject Term: RADIUS of gyration; Author-Supplied Keyword: Research Article; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 9p; Document Type: Article L3 - 10.1371/journal.pone.0076069 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94478126&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ruden, E. L. AU - Camacho, J. F. AU - Lynn, A. G. T1 - Visibility oscillation in a multimode laser interferometer signal and its use in optimizing path lengths. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2013/10// VL - 84 IS - 10 M3 - Article SP - 103103 EP - 103103-8 PB - American Institute of Physics SN - 00346748 AB - The interference signal visibility V (difference to sum ratio of intensities at maximum and minimum interference) of an interferometer that uses a multimode laser is here derived for a given laser gain profile and spectral mode separation as a function of the difference ZS between the probe and reference beam optical path lengths and the spectral separation kS between the center of the laser gain profile and the nearest laser mode of higher frequency. kS has a significant effect on V for a given ZS. This parameter, in lasers where it sweeps freely across the gain profile, and other effects, such as various misalignments and optical coupling inefficiencies, render V alone an unreliable parameter for quantifying ZS (for the purpose of reducing it, say). However, the difference to sum ratio of the maximum and minimum V due to variations in kS for a given ZS is an intrinsic property of the laser insensitive to configurational details. Parameter W so defined, therefore, proves very useful for balancing path lengths. This is of particular importance for systems where probe and/or reference beams are transmitted via long single mode optical fibers, so this application is detailed. Optical path lengths within such fibers often cannot be measured to sufficient accuracy by spatial path length measurements due to fiber nonuniformity resulting in variations in the mode's group velocity (needed to convert to optical path length). Two examples are provided using different makes and models of 0.633 μm HeNe lasers with similar specifications. In the first case, the function W(ZS) is calculated directly from the laser's published gain profile and mode separation. In the second case, W is determined empirically for a range of ZS values for a laser with an unknown gain profile in a (heterodyned) interferometer whose interference signal oscillates between maximum and minimum intensity at 80 MHz due to the reference beam's optical frequency being acousto-optically upshifted by that amount, while kS spontaneously varies on an acoustic time scale. A single high-bandwidth waveform record for each ZS, therefore, provides all the information needed to determine W. Despite the second laser's gain profile apparently differing in detail, qualitative agreement is achieved between the two methods sufficient to validate the technique. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERFEROMETERS KW - RESEARCH KW - LASERS -- Research KW - SOUND wave scattering KW - OPTICAL fibers KW - BANDWIDTHS -- Research N1 - Accession Number: 91763531; Ruden, E. L. 1 Camacho, J. F. 2 Lynn, A. G. 3; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, New Mexico 87117-5776, 2: NumerEx, LLC, 2309 Renard Pl SE #220, Albuquerque, New Mexico 87106, 3: Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico 87131,; Source Info: Oct2013, Vol. 84 Issue 10, p103103; Subject Term: INTERFEROMETERS; Subject Term: RESEARCH; Subject Term: LASERS -- Research; Subject Term: SOUND wave scattering; Subject Term: OPTICAL fibers; Subject Term: BANDWIDTHS -- Research; NAICS/Industry Codes: 327214 Glass manufacturing; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; Number of Pages: 1p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.4822273 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91763531&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Masoller, C. AU - Sciamanna, M. AU - Gavrielides, A. T1 - Two-parameter study of square-wave switching dynamics in orthogonally delay-coupled semiconductor lasers. JO - Philosophical Transactions of the Royal Society A: Mathematical, Physical & Engineering Sciences JF - Philosophical Transactions of the Royal Society A: Mathematical, Physical & Engineering Sciences Y1 - 2013/09/28/ VL - 371 IS - 1999 M3 - Article SP - 14 EP - 14 SN - 1364503X AB - We perform a detailed numerical analysis of square-wave (SW) polarization switching in two semiconductor lasers with time-delayed, orthogonal mutual coupling. An in-depth mapping of the dynamics in the two-parameter plane coupling strength versus frequency detuning shows that stable SWs occur in narrow parameter regions that are localized close to the boundary of stability of the pure-mode solution. In this steady state, the two coupled lasers emit orthogonal polarizations. We also show that there are various types of SW forms and that stable switching does not need the inclusion of noise or nonlinear gain in the model. As these narrow regions of deterministic and stable SWs occur for quite different combinations of parameters, they could potentially explain the waveforms that have been observed experimentally. However, on the other hand, these regions are narrow enough to be in fact considered as experimentally unreachable. Therefore, our results indicate that further experimental statistical studies are needed in order to distinguish deterministic and stationary square waveforms from long transients because of noise. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Transactions of the Royal Society A: Mathematical, Physical & Engineering Sciences is the property of Royal Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR lasers KW - MATHEMATICAL models KW - NUMERICAL analysis KW - SQUARE-wave generators KW - POLARIZATION (Nuclear physics) KW - FREQUENCIES of oscillating systems KW - PARAMETERS (Statistics) KW - bistability KW - dynamics KW - feedback KW - lasers KW - semiconductors KW - time delay N1 - Accession Number: 92958373; Masoller, C. 1; Email Address: cristina.masoller@upc.edu Sciamanna, M. 2 Gavrielides, A. 3; Affiliation: 1: Departament de Fisica i Enginyeria Nuclear, Universitat Politecnica de Catalunya, Colom 11, 08222 Terrassa, Barcelona, Spain 2: Optics and Electronics (OPTEL) Research Group, Laboratoire Matériaux Optiques, Photonique et Systemes (LMOPS), Supélec, 2 Rue Edouard Belin, 57070 Metz, France 3: Air Force Research Laboratory, AFR/EOARD, 86 Blenheim Crescent, Ruislip HA4 7HB, UK; Source Info: 9/28/2013, Vol. 371 Issue 1999, p14; Subject Term: SEMICONDUCTOR lasers; Subject Term: MATHEMATICAL models; Subject Term: NUMERICAL analysis; Subject Term: SQUARE-wave generators; Subject Term: POLARIZATION (Nuclear physics); Subject Term: FREQUENCIES of oscillating systems; Subject Term: PARAMETERS (Statistics); Author-Supplied Keyword: bistability; Author-Supplied Keyword: dynamics; Author-Supplied Keyword: feedback; Author-Supplied Keyword: lasers; Author-Supplied Keyword: semiconductors; Author-Supplied Keyword: time delay; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 1p; Document Type: Article; Full Text Word Count: 258 L3 - 10.1098/rsta.2012.0471 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92958373&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Traversa, Andreina AU - Loffredo, Elisabetta AU - Palazzo, Antonio J. AU - Bashore, Terry L. AU - Senesi, Nicola T1 - Enhancement of Germination and Growth of Slickspot Peppergrass in a New Medium with Two Compost Organic Fractions. JO - Communications in Soil Science & Plant Analysis JF - Communications in Soil Science & Plant Analysis Y1 - 2013/09/25/ VL - 44 IS - 17 M3 - Article SP - 2636 EP - 2646 SN - 00103624 AB - Slickspot peppergrass (Lepidium papilliferum) is an herbaceous biennal or possibly perennial “rare” endemic plant of the southwestern Idaho high desert listed as a threatened species. This plant establishes perennial seed banks, with seeds remaining dormant and viable for several years. This study aimed to enhance the germination and early growth of this plant by adopting a new medium, a nutrient-enriched agar solution, also added with humic acid (HA) and water-extractable organic matter (WEOM) fractions isolated from a green compost (GC) and a mixed compost (MC). The germination percentage of slickspot peppergrass in this new medium was much greater than that obtained in previous studies. Further, the addition of GC-HA in the medium enhanced significantly the germination and early growth of this plant. The addition of GC-WEOM and MC-WEOM were beneficial only on plant growth for at least 7 months. [ABSTRACT FROM AUTHOR] AB - Copyright of Communications in Soil Science & Plant Analysis is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GERMINATION KW - LEPIDIUM papilliferum KW - ENDEMIC plants KW - HUMIC acid KW - PLANT species KW - PLANT growth KW - IDAHO, Southwestern KW - Compost KW - humic acid KW - slickspot peppergrass KW - water-extractable organic matter N1 - Accession Number: 90091817; Traversa, Andreina 1 Loffredo, Elisabetta 1; Email Address: loffredo@agr.uniba.it Palazzo, Antonio J. 2 Bashore, Terry L. 3 Senesi, Nicola 1; Affiliation: 1: Dipartimento di Biologia e Chimica Agro-forestale e Ambientale, University of Bari, Bari, Italy 2: Engineer Research and Development Center- Cold Regions Research and Engineering Laboratory, Hanover, New Hampshire, USA 3: Headquarters Air Combat Command/Airspace, Ranges, Airfield Operations Division, Langley Air Force Base, Virginia, USA; Source Info: Sep2013, Vol. 44 Issue 17, p2636; Subject Term: GERMINATION; Subject Term: LEPIDIUM papilliferum; Subject Term: ENDEMIC plants; Subject Term: HUMIC acid; Subject Term: PLANT species; Subject Term: PLANT growth; Subject Term: IDAHO, Southwestern; Author-Supplied Keyword: Compost; Author-Supplied Keyword: humic acid; Author-Supplied Keyword: slickspot peppergrass; Author-Supplied Keyword: water-extractable organic matter; NAICS/Industry Codes: 111422 Floriculture Production; Number of Pages: 11p; Document Type: Article L3 - 10.1080/00103624.2013.811523 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90091817&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Potyrailo, Radislav A. AU - Starkey, Timothy A. AU - Vukusic, Peter AU - Ghiradella, Helen AU - Vasudev, Milana AU - Bunning, Timothy AU - Naik, Rajesh R. AU - Tang, Zhexiong AU - Larsen, Michael AU - Tao Deng AU - Zhong, Sheng AU - Palacios, Manuel AU - Grande, James C. AU - Zorn, Gilad AU - Goddard, Gregory AU - Zalubovsky, Sergey T1 - Discovery of the surface polarity gradient on iridescent Morpho butterfly scales reveals a mechanism of their selective vapor response. JO - Proceedings of the National Academy of Sciences of the United States of America JF - Proceedings of the National Academy of Sciences of the United States of America Y1 - 2013/09/24/ VL - 110 IS - 39 M3 - Article SP - 15567 EP - 15572 SN - 00278424 AB - For almost a century, the iridescence of tropical Morpho butterfly scales has been known to originate from 3D vertical ridge structures of stacked periodic layers of cuticle separated by air gaps. Here we describe a biological pattern of surface functionality that we have found in these photonic structures. This pattern is a gradient of surface polarity of the ridge structures that runs from their polar tops to their less-polar bottoms. This finding shows a biological pattern design that could stimulate numerous techno logical applications ranging from photonic security tags to self-cleaning surfaces, gas separators, protective clothing, sensors, and many others. As an important first step, this biomaterial property and our knowledge of its basis has allowed us to unveil a general mechanism of selective vapor response observed in the photonic Morpho nanostructures. This mechanism of selective vapor response brings a multivariate perspective for sensing, where selectivity is achieved within a single chemically graded nanostructured sensing unit, rather than from an array of separate sensors. [ABSTRACT FROM AUTHOR] AB - Copyright of Proceedings of the National Academy of Sciences of the United States of America is the property of National Academy of Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BUTTERFLIES KW - POLARITY (Biology) KW - PATTERN formation (Biology) KW - PROTECTIVE clothing KW - BIOLOGY KW - image analysis KW - multivariate sensing KW - spectral analysis KW - surface characterization j transmission electron microscopy N1 - Accession Number: 90549483; Potyrailo, Radislav A. 1; Email Address: potyrailo@crd.ge.com Starkey, Timothy A. 2 Vukusic, Peter 2 Ghiradella, Helen 3 Vasudev, Milana 4 Bunning, Timothy 4 Naik, Rajesh R. 4 Tang, Zhexiong 1 Larsen, Michael 1 Tao Deng 1,5 Zhong, Sheng 1 Palacios, Manuel 1 Grande, James C. 1 Zorn, Gilad 1 Goddard, Gregory 1 Zalubovsky, Sergey 1; Affiliation: 1: General Electric Global Research Center, Niskayuna, NY 12309 2: School of Physics, University of Exeter, Exeter EX4 4QL, United Kingdom 3: Department of Biological Sciences, University at Albany, State University of New York, Albany, NY 12222 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433 5: State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China; Source Info: 9/24/2013, Vol. 110 Issue 39, p15567; Subject Term: BUTTERFLIES; Subject Term: POLARITY (Biology); Subject Term: PATTERN formation (Biology); Subject Term: PROTECTIVE clothing; Subject Term: BIOLOGY; Author-Supplied Keyword: image analysis; Author-Supplied Keyword: multivariate sensing; Author-Supplied Keyword: spectral analysis; Author-Supplied Keyword: surface characterization j transmission electron microscopy; Number of Pages: 6p; Document Type: Article L3 - 10.1073/pnas.1311196110 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90549483&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Camden, Aerial N. AU - Barr, Stephen A. AU - Berry, Rajiv J. T1 - Simulations of Peptide-Graphene Interactions in ExplicitWater. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2013/09/19/ VL - 117 IS - 37 M3 - Article SP - 10691 EP - 10697 SN - 15206106 AB - Theinteraction of graphene with biomolecules has a variety ofuseful applications. In particular, graphitic surfaces decorated withpeptides are being considered for high performance biochemical sensors.The interaction of peptides with graphene can also provide insightinto the binding behavior of larger biomolecules. In this investigation,we have computed the binding enthalpies of a series of GXG tripeptideswith graphene using classical molecular dynamics. Explicit water moleculeswere included to capture the effect of solvent. Of the twenty aminoacid residues examined (X in GXG), arginine, glutamine, and asparagineexhibit the strongest interactions with graphene. Analysis of thetrajectories shows that the presence of graphene affects the peptideconformation relative to its conformation in solution. We also findthat the peptides favor the graphene interface predominantly due tothe influence of the solvent, with hydrophilic residues binding morestrongly than hydrophobic residues. These results demonstrate theneed to include explicit solvent atoms when modeling peptide-graphenesystems to mimic experimental conditions. Furthermore, the schemeoutlined herein may be widely applicable for the determination andvalidation of surface interaction parameters for a host of molecularfragments using a variety of techniques, ranging from coarse-grainedmodels to quantum mechanical methods. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PEPTIDES KW - GRAPHENE KW - WATER chemistry KW - SIMULATION methods & models KW - AMINO acids KW - SOLVENTS N1 - Accession Number: 90369133; Camden, Aerial N. 1 Barr, Stephen A. 1 Berry, Rajiv J. 1; Affiliation: 1: Air Force Research Laboratory,Materials & Manufacturing Directorate, 2941 Hobson Way, WPAFB, Ohio 45433, United States; Source Info: Sep2013, Vol. 117 Issue 37, p10691; Subject Term: PEPTIDES; Subject Term: GRAPHENE; Subject Term: WATER chemistry; Subject Term: SIMULATION methods & models; Subject Term: AMINO acids; Subject Term: SOLVENTS; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90369133&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Armani, C.J. AU - Ruggles-Wrenn, M.B. AU - Hay, R.S. AU - Fair, G.E. T1 - Creep and microstructure of Nextel™ 720 fiber at elevated temperature in air and in steam. JO - Acta Materialia JF - Acta Materialia Y1 - 2013/09/15/ VL - 61 IS - 16 M3 - Article SP - 6114 EP - 6124 SN - 13596454 AB - Creep of Nextel™ 720 alumina–mullite fiber tows was investigated at 1100 and 1200°C for tensile stresses of 100–400MPa in air and in steam. Fiber microstructures were characterized after creep by transmission electron microscopy. At low stresses steam increased creep rates by up to an order of magnitude and reduced creep lifetimes. At high stresses creep rates in steam and air were similar. Cavitation was prevalent in steam but not in air. The creep-rupture data obtained at 1200°C were analyzed in terms of a Monkman–Grant (MG) relationship. The MG parameters were independent of the test environment. Results reveal that the MG relationship can be used to predict creep rupture for Nextel™ 720 fibers and composites reinforced with these fibers at 1200°C in air and in steam. In steam the mullite in the Nextel™ 720 fibers decomposed to porous alumina. Decomposition kinetics were linear and had an activation energy of ∼200kJmol−1. Intergranular films were not observed on alumina grain boundaries or alumina–mullite interphase boundaries after creep in steam. Creep mechanisms are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CREEP (Materials) KW - ALUMINUM oxide KW - MULLITE KW - ATMOSPHERIC temperature KW - STRAINS & stresses (Mechanics) KW - TRANSMISSION electron microscopy KW - Alumina KW - Creep KW - Fibers KW - Microstructure, final KW - Mullite N1 - Accession Number: 89898639; Armani, C.J. 1 Ruggles-Wrenn, M.B. 1; Email Address: marina.ruggles-wrenn@afit.edu Hay, R.S. 2 Fair, G.E. 2; Affiliation: 1: Air Force Institute of Technology, Wright-Patterson Air Force Base, Dayton, OH 45433-7765, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433-7817, USA; Source Info: Sep2013, Vol. 61 Issue 16, p6114; Subject Term: CREEP (Materials); Subject Term: ALUMINUM oxide; Subject Term: MULLITE; Subject Term: ATMOSPHERIC temperature; Subject Term: STRAINS & stresses (Mechanics); Subject Term: TRANSMISSION electron microscopy; Author-Supplied Keyword: Alumina; Author-Supplied Keyword: Creep; Author-Supplied Keyword: Fibers; Author-Supplied Keyword: Microstructure, final; Author-Supplied Keyword: Mullite; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.actamat.2013.06.053 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89898639&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Erneux, Thomas AU - Kovanis, Vassilios AU - Gavrielides, Athanasios T1 - Nonlinear dynamics of an injected quantum cascade laser. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2013/09/15/ VL - 88 IS - 3-B M3 - Article SP - 1 EP - 8 SN - 15393755 AB - The stability properties of an injected quantum cascade laser are investigated analytically on the basis of current estimates of the laser parameters. We show that in addition to stable locking, Hopf bifurcations leading to pulsating intensities are possible. We discuss the stability diagrams in terms of the detuning and the injection rate for different values of the linewidth enhancement factor. The analysis indicates domains of coexistence between two stable steady states (bistability) or between a stable steady state and stable periodic oscillations. All predictions are verified numerically by determining bifurcation diagrams from the laser rate equations. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR dynamical systems KW - QUANTUM cascade lasers KW - PARAMETER estimation KW - STABILITY theory KW - HOPF bifurcations KW - EXISTENCE theorems N1 - Accession Number: 91683610; Erneux, Thomas 1 Kovanis, Vassilios 2 Gavrielides, Athanasios 3; Affiliation: 1: Université Libre de Bruxelles, Optique Nonlinéaire Théorique, Campus Plaine, C. P. 231,1050 Bruxelles, Belgium 2: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Dayton, Ohio 45433, USA 3: University of New Mexico, Center for High Technology Materials, Albuquerque, New Mexico 87131-0001, USA; Source Info: Sep2013, Vol. 88 Issue 3-B, p1; Subject Term: NONLINEAR dynamical systems; Subject Term: QUANTUM cascade lasers; Subject Term: PARAMETER estimation; Subject Term: STABILITY theory; Subject Term: HOPF bifurcations; Subject Term: EXISTENCE theorems; Number of Pages: 8p; Document Type: Article L3 - 10.1103/PhysRevE.88.032907 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91683610&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jia-Chen Hua AU - Gunaratne, Gemunu H. AU - Kostka, Stanislav AU - Naibo Jiang AU - Kiel, Barry V. AU - Gord, James R. AU - Roy, Sukesh T1 - Dynamical-systems analysis and unstable periodic orbits in reacting flows behind symmetric bluff bodies. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2013/09/15/ VL - 88 IS - 3-B M3 - Article SP - 1 EP - 17 SN - 15393755 AB - Dynamical systems analysis is performed for reacting flows stabilized behind four symmetric bluff bodies to determine the effects of shape on the nature of flame stability, acoustic coupling, and vortex shedding. The task requires separation of regular, repeatable aspects of the flow from experimental noise and highly irregular, nonrepeatable small-scale structures caused primarily by viscous-mediated energy cascading. The experimental systems are invariant under a reflection, and symmetric vortex shedding is observed throughout the parameter range. As the equivalence ratio--and, hence, acoustic coupling--is reduced, a symmetry-breaking transition to von Karman vortices is initiated. Combining principal-components analysis with a symmetry-based filtering, we construct bifurcation diagrams for the onset and growth of von Karman vortices. We also compute Lyapunov exponents for each flame holder to help quantify the transitions. Furthermore, we outline changes in the phase-space orbits that accompany the onset of von Karman vortex shedding and compute unstable periodic orbits (UPOs) embedded in the complex flows prior to and following the bifurcation. For each flame holder, we find a single UPO in flows without von Karman vortices and a pair of UPOs in flows with von Karman vortices. These periodic orbits organize the dynamics of the flow and can be used to reduce or control flow irregularities. By subtracting them from the overall flow, we are able to deduce the nature of irregular facets of the flows. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DYNAMICAL systems KW - COMBINATORIAL dynamics KW - SYMMETRY (Physics) KW - FLAME stability KW - ACOUSTIC couplers KW - VORTEX shedding N1 - Accession Number: 91683633; Jia-Chen Hua 1 Gunaratne, Gemunu H. 1 Kostka, Stanislav 2 Naibo Jiang 2 Kiel, Barry V. 3 Gord, James R. 3 Roy, Sukesh 2; Email Address: sroy@woh.rr.com; Affiliation: 1: Department of Physics, University of Houston, Houston, Texas 77204, USA 2: Spectral Energies, LLC, Dayton, Ohio 45434, USA 3: Aerospace Systems Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433, USA; Source Info: Sep2013, Vol. 88 Issue 3-B, p1; Subject Term: DYNAMICAL systems; Subject Term: COMBINATORIAL dynamics; Subject Term: SYMMETRY (Physics); Subject Term: FLAME stability; Subject Term: ACOUSTIC couplers; Subject Term: VORTEX shedding; Number of Pages: 17p; Document Type: Article L3 - 10.1103/PhysRevE.88.033011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91683633&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Donegan, S.P. AU - Tucker, J.C. AU - Rollett, A.D. AU - Barmak, K. AU - Groeber, M. T1 - Extreme value analysis of tail departure from log-normality in experimental and simulated grain size distributions. JO - Acta Materialia JF - Acta Materialia Y1 - 2013/09// VL - 61 IS - 15 M3 - Article SP - 5595 EP - 5604 SN - 13596454 AB - Abstract: Grain size data were taken from four three- and two-dimensional microstructures, including simulated grain growth, thin film and superalloy data sets. Probability plots revealed approximately log-normal distributions for experimental grain size data sets, but with systematic differences in the upper tails. A simulated grain size data set obtained from Potts model growth exhibited strong deviation from log-normality. A peaks-over-threshold analysis was applied to quantify the differences in the upper tails. Potts model simulation of normal grain growth shows the shortest tail, whereas the thin film data showed the longest tail (i.e. closest to log-normal), with an intermediate tail shape in the superalloy. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXTREME value theory KW - CHEMISTRY experiments KW - PARTICLE size distribution KW - DATA analysis KW - METALS -- Microstructure KW - PROBABILITY theory KW - Extreme value analysis KW - Grain size KW - Grain size distributions KW - Statistical analysis N1 - Accession Number: 89607728; Donegan, S.P. 1; Email Address: sdonegan@andrew.cmu.edu Tucker, J.C. 1 Rollett, A.D. 1 Barmak, K. 2 Groeber, M. 3; Affiliation: 1: Department of Materials Science and Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Doherty Hall A306, Pittsburgh, PA 15213, USA 2: Department of Applied Physics and Applied Mathematics, Columbia University, Seeley W. Mudd Building, 500 West 120th Street, Suite 200, MC 4701, New York, NY 10027, USA 3: Air Force Research Laboratory (AFRL), 2230 Tenth Street, Bldg. 655, Rm. 079, WPAFB, OH 45433, USA; Source Info: Sep2013, Vol. 61 Issue 15, p5595; Subject Term: EXTREME value theory; Subject Term: CHEMISTRY experiments; Subject Term: PARTICLE size distribution; Subject Term: DATA analysis; Subject Term: METALS -- Microstructure; Subject Term: PROBABILITY theory; Author-Supplied Keyword: Extreme value analysis; Author-Supplied Keyword: Grain size; Author-Supplied Keyword: Grain size distributions; Author-Supplied Keyword: Statistical analysis; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.actamat.2013.06.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89607728&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Garmann, Daniel J. T1 - Compact Finite-Differencing and Filtering Procedure Applied to the Incompressible Navier-Stokes Equations. JO - AIAA Journal JF - AIAA Journal Y1 - 2013/09// VL - 51 IS - 9 M3 - Article SP - 2241 EP - 2251 SN - 00011452 AB - A high-order discretization and filtering procedure is applied to the solution of the incompressible Navier-Stokes equations in a vorticity/stream-function formulation, which is implemented in curvilinear coordinates. Compact finite differencing is coupled with the use of a low-pass filtering operator to augment the stability of the scheme for high-Reynolds-number flows and/or low-resolution meshes. Advancement in time is done through either first- or second-order, backward Euler time integrations, which are supplemented with Newton-like subiterations. Temporal and spatial formal orders of accuracy are examined through exact solutions of the governing equations, where the theoretical orders of accuracy are achieved for up to sixth-order spatial and second-order temporal discretizations. The technique is also demonstrated on both steady and unsteady incompressible flow canonical problems, including the lid-driven cavity and unsteady flow over a cylinder. The advantage of the high-order scheme coupled with the filter becomes apparent from more accurate solutions being achievable on much coarser meshes. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NAVIER-Stokes equations KW - RESEARCH KW - DISCRETIZATION methods KW - FILTERS (Mathematics) KW - VORTEX motion KW - EULER method N1 - Accession Number: 90027259; Garmann, Daniel J. 1,2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Member AIAA; Source Info: Sep2013, Vol. 51 Issue 9, p2241; Subject Term: NAVIER-Stokes equations; Subject Term: RESEARCH; Subject Term: DISCRETIZATION methods; Subject Term: FILTERS (Mathematics); Subject Term: VORTEX motion; Subject Term: EULER method; Number of Pages: 11p; Document Type: Article L3 - 10.2514/1.J052264 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90027259&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shiryayev, Oleg V. AU - Slater, Joseph C. AU - Brown, Jeffrey T1 - Feasibility of Using Nonlinear Response Features for Crack Detection in Turbomachinery Components. JO - AIAA Journal JF - AIAA Journal Y1 - 2013/09// VL - 51 IS - 9 M3 - Article SP - 2290 EP - 2294 SN - 00011452 AB - The article presents a study which attempted to determine the feasibility of applying a vibration-based damage detection method using a realistic turbomachinery hardware model containing damage in the form of a fatigue crack in turbine engine disks. It outlines the reasons for using data obtained from numerical simulations rather than experimental data. It relates the finite element modeling of the damaged disk. KW - TURBOMACHINES -- Blades KW - VIBRATION (Aeronautics) KW - FATIGUE cracks KW - FRACTURE mechanics KW - COMPUTER simulation KW - VIBRATION N1 - Accession Number: 90027265; Shiryayev, Oleg V. 1,2 Slater, Joseph C. 3,4 Brown, Jeffrey 2,5; Affiliation: 1: Petroleum Institute, Abu Dhabi, United Arab Emirates 2: Member AIAA 3: Wright State University, Dayton, Ohio 45435 4: Fellow AIAA 5: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Sep2013, Vol. 51 Issue 9, p2290; Subject Term: TURBOMACHINES -- Blades; Subject Term: VIBRATION (Aeronautics); Subject Term: FATIGUE cracks; Subject Term: FRACTURE mechanics; Subject Term: COMPUTER simulation; Subject Term: VIBRATION; Number of Pages: 5p; Document Type: Article L3 - 10.2514/1.J052189 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90027265&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Taylor, Daniel J. AU - Bramoweth, Adam D. AU - Grieser, Emily A. AU - Tatum, Jolyn I. AU - Roane, Brandy M. T1 - Epidemiology of Insomnia in College Students: Relationship With Mental Health, Quality of Life, and Substance Use Difficulties. JO - Behavior Therapy JF - Behavior Therapy Y1 - 2013/09// VL - 44 IS - 3 M3 - Article SP - 339 EP - 348 SN - 00057894 AB - Abstract: The purpose of this study was to evaluate the prevalence and correlates of insomnia using rigorous diagnostic criteria and a comprehensive assessment battery. In a large sample (N =1,074) of college students (mean age 20.39years), participants were asked to complete a week-long sleep diary and comprehensive questionnaire packet assessing recommended daytime functioning domains (i.e., fatigue, quality of life, depression, anxiety, stress, academic performance, substance use) during the academic year. A significant portion of this sample of college students met proposed DSM-5 criteria for chronic insomnia (9.5%). The chronic insomnia group reported significantly worse sleep, fatigue, depression, anxiety, stress, and quality of life, and greater hypnotic and stimulant use for sleep problems. There were no differences between groups on excessive daytime sleepiness, academic performance, or substance use. This was a rigorous and comprehensive assessment of the prevalence and psychosocial correlates of insomnia. Insomnia is a significant problem in college students and should be regularly assessed. More research is also needed to guide treatment in this population. [Copyright &y& Elsevier] AB - Copyright of Behavior Therapy is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLEGE students -- Health KW - EPIDEMIOLOGY KW - INSOMNIA KW - MENTAL health KW - QUALITY of life KW - SUBSTANCE-induced disorders KW - DISEASE prevalence KW - college KW - hypnotic KW - insomnia KW - psychosocial KW - stimulant N1 - Accession Number: 89122715; Taylor, Daniel J. 1; Email Address: djtaylor@unt.edu Bramoweth, Adam D. 2 Grieser, Emily A. 3 Tatum, Jolyn I. 3 Roane, Brandy M. 4; Affiliation: 1: University of North Texas 2: VISN 4 Mental Illness Research, Education and Clinical Center and VA Pittsburgh Healthcare System 3: United States Air Force 4: University of North Texas Health Science Center; Source Info: Sep2013, Vol. 44 Issue 3, p339; Subject Term: COLLEGE students -- Health; Subject Term: EPIDEMIOLOGY; Subject Term: INSOMNIA; Subject Term: MENTAL health; Subject Term: QUALITY of life; Subject Term: SUBSTANCE-induced disorders; Subject Term: DISEASE prevalence; Author-Supplied Keyword: college; Author-Supplied Keyword: hypnotic; Author-Supplied Keyword: insomnia; Author-Supplied Keyword: psychosocial; Author-Supplied Keyword: stimulant; NAICS/Industry Codes: 621330 Offices of Mental Health Practitioners (except Physicians); Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.beth.2012.12.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89122715&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Keren, Hila AU - Boyer, Pascal AU - Mort, Joel AU - Eilam, David T1 - The Impact of Precaution and Practice on the Performance of a Risky Motor Task. JO - Behavioral Sciences (2076-328X) JF - Behavioral Sciences (2076-328X) Y1 - 2013/09// VL - 3 IS - 3 M3 - Article SP - 316 EP - 329 PB - MDPI Publishing SN - 2076328X AB - The association between threat perception and motor execution, mediated by evolved precaution systems, often results in ritual-like behavior, including many idiosyncratic acts that seem irrelevant to the task at hand. This study tested the hypothesis that threat-detection during performance of a risky motor task would result in idiosyncratic activity that is not necessary for task completion. We asked biology students to follow a particular set of instructions in mixing three solutions labeled "bio-hazardous" and then repeat this operation with "non-hazardous" substances (or vice versa). We observed a longer duration of the overall performance, a greater repertoire of acts, longer maximal act duration, and longer mean duration of acts in the "risky" task when it was performed before the "non-risky" task. Some, but not all, of these differences were eliminated when a "non-risky" task preceded the "risky" one. The increased performance of idiosyncratic unnecessary activity is in accordance with the working hypothesis of the present study: ritualized idiosyncratic activities are performed in response to a real or illusionary threat, as a means to alleviate anxiety. [ABSTRACT FROM AUTHOR] AB - Copyright of Behavioral Sciences (2076-328X) is the property of MDPI Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AFFECT (Psychology) KW - ANXIETY KW - COGNITION KW - BEHAVIOR KW - PSYCHOLOGY KW - affect KW - anxiety KW - behavior KW - cognition KW - emotion KW - precaution N1 - Accession Number: 90500643; Keren, Hila 1 Boyer, Pascal 2; Email Address: pboyer@wustl.edu Mort, Joel 3; Email Address: joel.mort@wpafb.af.mil Eilam, David 1; Email Address: eilam@post.tau.ac.il; Affiliation: 1: Department of Zoology, Tel Aviv University, Ramat-Aviv 69978, Israel 2: Departments of Psychology and Anthropology, Washington University, St Louis, MO 63130, USA 3: 711th Human Performance Wing, US Air Force Research Laboratory, WPAFB, OH 45433, USA; Source Info: Sep2013, Vol. 3 Issue 3, p316; Subject Term: AFFECT (Psychology); Subject Term: ANXIETY; Subject Term: COGNITION; Subject Term: BEHAVIOR; Subject Term: PSYCHOLOGY; Author-Supplied Keyword: affect; Author-Supplied Keyword: anxiety; Author-Supplied Keyword: behavior; Author-Supplied Keyword: cognition; Author-Supplied Keyword: emotion; Author-Supplied Keyword: precaution; Number of Pages: 14p; Document Type: Article L3 - 10.3390/bs3030316 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90500643&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Moore, L. Richard AU - Gunzelmann, Glenn T1 - Task artifacts and strategic adaptation in the change signal task JO - Cognitive Systems Research JF - Cognitive Systems Research Y1 - 2013/09// VL - 24 M3 - Article SP - 35 EP - 42 SN - 13890417 AB - Abstract: The change signal task is a variant of a two-alternative forced-choice (2AFC) task where the initial stimulus is superseded with the alternative stimulus (the change signal) at a delay on a proportion of trials. Taking advantage of the overlap in task requirements, we present a single model that can perform both tasks, and we validate the model using the empirical data from participants who performed them sequentially. The results confirmed the existence of a dynamic hedging strategy in the change signal task, and provided evidence against a role for cognitive fatigue in producing the slower response times with increased time on task. When fitting the 2AFC task, the model required adjustment to one architectural parameter while the rest were left to defaults. That parameter was then constrained while fitting the remaining three task-specific parameters for the change signal task. This effectively reduced a degree of freedom in the model fitting process, and increased confidence in the model as it closely matched human performance in multiple tasks. [Copyright &y& Elsevier] AB - Copyright of Cognitive Systems Research is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRATEGIC planning KW - SIGNAL processing KW - EMPIRICAL research KW - PERFORMANCE KW - DEGREES of freedom KW - COGNITIVE ability KW - ACT-R KW - Change signal KW - Cognitive model KW - Two-alternative forced-choice N1 - Accession Number: 86398744; Moore, L. Richard 1; Email Address: larry.moore@L-3com.com Gunzelmann, Glenn 2; Affiliation: 1: L3 Communications, 5950 East Sossaman Road, Suite 121, Mesa, AZ 85212, USA 2: Cognitive Models and Agents Branch, Air Force Research Laboratory Wright Patterson Air Force Base, OH 45434, USA; Source Info: Sep2013, Vol. 24, p35; Subject Term: STRATEGIC planning; Subject Term: SIGNAL processing; Subject Term: EMPIRICAL research; Subject Term: PERFORMANCE; Subject Term: DEGREES of freedom; Subject Term: COGNITIVE ability; Author-Supplied Keyword: ACT-R; Author-Supplied Keyword: Change signal; Author-Supplied Keyword: Cognitive model; Author-Supplied Keyword: Two-alternative forced-choice; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.cogsys.2012.12.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86398744&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yin, Zhiyao AU - Montello, Aaron AU - Carter, Campbell D. AU - Lempert, Walter R. AU - Adamovich, Igor V. T1 - Measurements of temperature and hydroxyl radical generation/decay in lean fuel–air mixtures excited by a repetitively pulsed nanosecond discharge. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2013/09// VL - 160 IS - 9 M3 - Article SP - 1594 EP - 1608 SN - 00102180 AB - Abstract: OH Laser Induced Fluorescence (LIF) and picosecond (ps), broadband Coherent Anti-Stokes Raman Spectroscopy (CARS) are used for time-resolved temperature and time-resolved, absolute OH number density measurements in lean H2-air, CH4-air, C2H4-air, and C3H8-air mixtures in a nanosecond (ns) pulse discharge cell/plasma flow reactor. The premixed fuel–air flow in the reactor, initially at T 0 =500K and P =100torr, is excited by a repetitive ns pulse discharge in a plane-to-plane geometry (peak voltage 28kV, discharge gap 10mm, estimated pulse energy 1.25mJ/pulse), operated in burst mode at 10kHz pulse repetition rate. In most measurements, burst duration is limited to 50 pulses, to preclude plasma-assisted ignition. The discharge uniformity in air and fuel–air flows is verified using sub-ns-gated images (employing an intensified charge-coupled device camera). Temperatures measured at the end of the discharge burst are in the range of T =550–600K, using both OH LIF and CARS, and remain essentially unchanged for up to 10ms after the burst. Time-resolved temperature measured by CARS during plasma-assisted ignition of H2-air is in good agreement with kinetic model predictions. Based on CARS measurement, vibrational nonequilibrium is not a significant factor at the present conditions. Time-resolved, absolute OH number density, measured after the discharge burst, demonstrates that OH concentration in C2H4-air, C3H8-air, and CH4 is highest in lean mixtures. In H2-air, OH concentration is nearly independent of the equivalence ratio. In C2H4-air and C3H8-air, unlike in CH4-air and in H2-air, transient OH-concentration overshoot after the discharge is detected. In C2H4-air and C3H8-air, OH decays after the discharge on the time scale of ∼0.02–0.1ms, suggesting little accumulation during the burst of pulses repeated at 10kHz. In CH4-air and H2-air, OH concentration decays within ∼0.1–1.0ms and 0.5–1.0ms, respectively, showing that it may accumulate during the burst. The experimental results are compared with kinetic modeling calculations using plasma/fuel chemistry model employing several H2-air and hydrocarbon-air chemistry mechanisms. Kinetic mechanisms for H2-air, CH4-air, and C2H4-air developed by A. Konnov provide the best overall agreement with OH measurements. In C3H8-air, none of the hydrocarbon chemistry mechanisms agrees well with the data. The results show the need for development of an accurate, predictive low-temperature plasma chemistry/fuel chemistry kinetic model applicable to fuels C3 and higher. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEAN combustion KW - TEMPERATURE measurements KW - GLOW discharges KW - HYDROXYL group KW - MIXTURES KW - LASER-induced fluorescence KW - RAMAN spectroscopy KW - ANTI-Stokes scattering KW - Kinetic modeling KW - Laser Induced Fluorescence KW - Low temperature plasmas KW - Nanosecond pulse discharge KW - Plasma assisted combustion N1 - Accession Number: 89134891; Yin, Zhiyao 1; Email Address: yin.67@osu.edu Montello, Aaron 1 Carter, Campbell D. 2 Lempert, Walter R. 1 Adamovich, Igor V. 1; Affiliation: 1: Michael A. Chaszeyka Nonequilibrium Thermodynamics Laboratories, Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210, United States 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, United States; Source Info: Sep2013, Vol. 160 Issue 9, p1594; Subject Term: LEAN combustion; Subject Term: TEMPERATURE measurements; Subject Term: GLOW discharges; Subject Term: HYDROXYL group; Subject Term: MIXTURES; Subject Term: LASER-induced fluorescence; Subject Term: RAMAN spectroscopy; Subject Term: ANTI-Stokes scattering; Author-Supplied Keyword: Kinetic modeling; Author-Supplied Keyword: Laser Induced Fluorescence; Author-Supplied Keyword: Low temperature plasmas; Author-Supplied Keyword: Nanosecond pulse discharge; Author-Supplied Keyword: Plasma assisted combustion; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.combustflame.2013.03.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89134891&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abboud, Jacques E. AU - Jiang, Naibo AU - Zhang, Zhili AU - Roy, Sukesh AU - Gord, James R. T1 - Spatial and temporal control of on-demand propane–air flame ignition by active photothermal effect of aluminum nanoenergetics. JO - Combustion & Flame JF - Combustion & Flame Y1 - 2013/09// VL - 160 IS - 9 M3 - Article SP - 1842 EP - 1847 SN - 00102180 AB - Abstract: Active photothermal effects of aluminum nanoenergetics are demonstrated to control spatially and temporally the ignition of propane/air flames. High-speed chemiluminescence images of hydroxyl (OH*) and methylidyne (CH*) radicals and aluminum oxide (AlO) are employed to confirm the local flame ignition and propagation by activation of the nanoenergetics through the use of a single exposure from a xenon flash lamp. The photothermal effects of the nanoenergetics can efficiently activate the localized exothermal aluminum oxidation reactions, leading to sequential flame ignition. Most of the energy required for ignition is provided by the oxidation reaction of the aluminum nanoparticles such that the photothermal MIE (Minimum Ignition Energy) is at least 67 times less than that from regular spark ignition. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROPANE KW - FLAME KW - COMBUSTION KW - PHOTOTHERMAL effect KW - ALUMINUM KW - SPARK ignition engines KW - METAL nanoparticles KW - CARBYNES KW - Active photothermal KW - Ignition KW - On-demand KW - Plasmon resonance N1 - Accession Number: 89134913; Abboud, Jacques E. 1 Jiang, Naibo 2 Zhang, Zhili 1; Email Address: zzhang24@utk.edu Roy, Sukesh 2 Gord, James R. 3; Affiliation: 1: Mechanical, Aerospace and Biomedical Engineering Department, University of Tennessee, Knoxville, TN 37996, USA 2: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, OH 45431, USA 3: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Sep2013, Vol. 160 Issue 9, p1842; Subject Term: PROPANE; Subject Term: FLAME; Subject Term: COMBUSTION; Subject Term: PHOTOTHERMAL effect; Subject Term: ALUMINUM; Subject Term: SPARK ignition engines; Subject Term: METAL nanoparticles; Subject Term: CARBYNES; Author-Supplied Keyword: Active photothermal; Author-Supplied Keyword: Ignition; Author-Supplied Keyword: On-demand; Author-Supplied Keyword: Plasmon resonance; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 333618 Other Engine Equipment Manufacturing; NAICS/Industry Codes: 333619 Other engine and power transmission equipment manufacturing; NAICS/Industry Codes: 424710 Petroleum Bulk Stations and Terminals; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 454312 Liquefied petroleum gas (bottled gas) dealers; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.combustflame.2013.03.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89134913&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, Oleg N. AU - Fan Zhang AU - Miller, Jonathan D. T1 - Phase Composition of a CrMo0.5NbTa0.5TiZr High Entropy Alloy: Comparison of Experimental and Simulated Data. JO - Entropy JF - Entropy Y1 - 2013/09// VL - 15 IS - 9 M3 - Article SP - 3796 EP - 3809 SN - 10994300 AB - Microstructure and phase composition of a CrMo0.5NbTa0.5TiZr high entropy alloy were studied in the as-solidified and heat treated conditions. In the as-solidified condition, the alloy consisted of two disordered BCC phases and an ordered cubic Laves phase. The BCC1 phase solidified in the form of dendrites enriched with Mo, Ta and Nb, and its volume fraction was 42%. The BCC2 and Laves phases solidified by the eutectic-type reaction, and their volume fractions were 27% and 31%, respectively. The BCC2 phase was enriched with Ti and Zr and the Laves phase was heavily enriched with Cr. After hot isostatic pressing at 1450 °C for 3 h, the BCC1 dendrites coagulated into round-shaped particles and their volume fraction increased to 67%. The volume fractions of the BCC2 and Laves phases decreased to 16% and 17%, respectively. After subsequent annealing at 1000 °C for 100 h, submicron-sized Laves particles precipitated inside the BCC1 phase, and the alloy consisted of 52% BCC1, 16% BCC2 and 32% Laves phases. Solidification and phase equilibrium simulations were conducted for the CrMo0.5NbTa0.5TiZr alloy using a thermodynamic database developed by CompuTherm LLC. Some discrepancies were found between the calculated and experimental results and the reasons for these discrepancies were discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Entropy is the property of MDPI Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALLOYS KW - ENTROPY KW - INFORMATION theory KW - LAVES phases (Metallurgy) KW - PHASE rule & equilibrium KW - QUANTUM thermodynamics KW - CALPHAD KW - microstructure and phase analysis KW - refractory high entropy alloy N1 - Accession Number: 90537063; Senkov, Oleg N. 1; Email Address: oleg.senkov@wpafb.af.mil Fan Zhang 2; Email Address: fan.zhang@computherm.com Miller, Jonathan D. 1; Email Address: jonathan.miller@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA 2: CompuTherm, LLC, 437 S. Yellowstone Dr., Madison, WI 53719, USA; Source Info: Sep2013, Vol. 15 Issue 9, p3796; Subject Term: ALLOYS; Subject Term: ENTROPY; Subject Term: INFORMATION theory; Subject Term: LAVES phases (Metallurgy); Subject Term: PHASE rule & equilibrium; Subject Term: QUANTUM thermodynamics; Author-Supplied Keyword: CALPHAD; Author-Supplied Keyword: microstructure and phase analysis; Author-Supplied Keyword: refractory high entropy alloy; Number of Pages: 14p; Document Type: Article L3 - 10.3390/e15093796 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90537063&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanford, B. AU - Albertani, R. AU - Lacore, D. AU - Parker, G. T1 - Proper Orthogonal Decomposition of Flexible Clap and Fling Elastic Motions via High-Speed Deformation Measurements. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2013/09// VL - 53 IS - 7 M3 - Article SP - 1127 EP - 1141 SN - 00144851 AB - Many complex unsteady mechanisms are thought to facilitate the high efficiency and agility commonly observed in small biological flyers. One of these, the flexible clap and fling maneuver, has not been extensively studied; an experimental characterization is the focus of this work. The clap-fling mechanism is approximated with a single flexible membrane flapping wing, replacing the symmetry plane between two wings with a splitter plate simulating the pair wing. This produces a complex vibro-impact aeroelastic problem, the deformation resulting from which is measured with a high-speed visual image correlation system. A low-dimensional representation of the ensuing large data set is obtained with proper orthogonal decomposition. The POD modes, and the relative importance of each, can help elucidate crucial mechanisms and relationships within the flapping system, and are computed for various membrane wing structures and flapping frequencies, with or without the presence of the splitter plate. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORTHOGONAL decompositions KW - ELASTICITY KW - DEFORMATIONS (Mechanics) KW - COMPUTATIONAL complexity KW - AEROELASTICITY KW - DIGITAL image correlation KW - Digital image correlation KW - Flapping wings KW - MAV KW - VIC N1 - Accession Number: 89729629; Stanford, B. 1 Albertani, R. 2; Email Address: roberto.albertani@oregonstate.edu Lacore, D. 1 Parker, G. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson AFB 45433 USA 2: Oregon State University, Corvallis 97331 USA; Source Info: Sep2013, Vol. 53 Issue 7, p1127; Subject Term: ORTHOGONAL decompositions; Subject Term: ELASTICITY; Subject Term: DEFORMATIONS (Mechanics); Subject Term: COMPUTATIONAL complexity; Subject Term: AEROELASTICITY; Subject Term: DIGITAL image correlation; Author-Supplied Keyword: Digital image correlation; Author-Supplied Keyword: Flapping wings; Author-Supplied Keyword: MAV; Author-Supplied Keyword: VIC; Number of Pages: 15p; Document Type: Article L3 - 10.1007/s11340-013-9743-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89729629&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Veazie, D. AU - Jordan, J. AU - Spowart, J. AU - White, B. AU - Thadhani, N. T1 - Model for Elastic Modulus of Multi-Constituent Particulate Composites. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2013/09// VL - 53 IS - 7 M3 - Article SP - 1213 EP - 1222 SN - 00144851 AB - In this paper, a methodology has been developed to accurately predict the elastic properties of multi-constituent particulate composites by accounting for irreversible effects, such as energy loss that arises due to internal friction. The complex dependence on loading density and particle properties (i.e., size, shape, morphology, etc.) is investigated in terms of their effects on the effective elastic modulus of the composite. Confirmed by experimental data from the compression loading of individual Ni and Al particles dispersed in an epoxy matrix, it is believed that this approach captures the effects of internal friction, consequently providing a more accurate and comprehensive representation for predicting and understanding the material behavior of multi-constituent particulate reinforced composites. The present methodology provides a model to directly compare the elastic modulus from an uncomplicated test, such as dual-cantilever beam loading in dynamic mechanical analysis (DMA), to the modulus obtained by other more complex experimental methods such as quasi-static compression. The model illustrates an efficient method to incorporate input data from DMA to represent realistic elastic moduli, hence promising for the characterization and design of particulate composites. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELASTIC modulus KW - COMPOSITE materials KW - MATERIALS -- Electric properties KW - COMPUTATIONAL complexity KW - AXIAL loads KW - COMPRESSION loads KW - Compression modulus KW - Dynamic mechanical analysis KW - Internal friction KW - Irreversible energy loss KW - Multi-constituent particle-reinforced composites N1 - Accession Number: 89729632; Veazie, D. 1 Jordan, J. 2; Email Address: jennifer.jordan@eglin.af.mil Spowart, J. 3 White, B. 4 Thadhani, N. 4; Affiliation: 1: School of Engineering, Southern Polytechnic State University, Marietta 30060 USA 2: Air Force Research Laboratory, AFRL/RWME, Eglin AFB 32542 USA 3: Air Force Research Laboratory, AFRL/RXBC, Wright-Patterson AFB 45433 USA 4: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta 30332 USA; Source Info: Sep2013, Vol. 53 Issue 7, p1213; Subject Term: ELASTIC modulus; Subject Term: COMPOSITE materials; Subject Term: MATERIALS -- Electric properties; Subject Term: COMPUTATIONAL complexity; Subject Term: AXIAL loads; Subject Term: COMPRESSION loads; Author-Supplied Keyword: Compression modulus; Author-Supplied Keyword: Dynamic mechanical analysis; Author-Supplied Keyword: Internal friction; Author-Supplied Keyword: Irreversible energy loss; Author-Supplied Keyword: Multi-constituent particle-reinforced composites; Number of Pages: 10p; Document Type: Article L3 - 10.1007/s11340-013-9722-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89729632&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jauchem, James AU - Bernhard, Joshua AU - Cerna, Cesario AU - Lim, Tiffany AU - Seaman, Ronald AU - Tarango, Melissa T1 - Effects of a TASER conducted energy weapon on the circulating red-blood-cell population and other factors in Sus scrofa. JO - Forensic Science, Medicine & Pathology JF - Forensic Science, Medicine & Pathology Y1 - 2013/09// VL - 9 IS - 3 M3 - Article SP - 308 EP - 320 SN - 1547769X AB - In previous studies hematocrit has been consistently increased in an anesthetized animal model after exposures to TASER conducted energy weapons (CEWs). In the present study we analyzed changes in blood cell counts and red blood cell membrane proteins following two 30-s applications of a TASER C2 device (which is designed for civilian use). Hematocrit increased significantly from 33.2 ± 2.4 (mean ± SD) to 42.8 ± 4.6 % immediately after CEW exposure of eleven pigs ( Sus scrofa). Red blood cell count increased significantly from 6.10 ± 0.55 × 10/L to 7.45 ± 0.94 × 10/L, and mean corpuscular volume increased significantly from 54.5 ± 2.4 fl to 57.8 ± 2.6 fl. Mean corpuscular hemoglobin concentration decreased significantly from 20.5 ± 0.7 to 18.5 ± 0.6 mM. Thirty protein spots (from two-dimensional sodium dodecyl sulfate polyacrylamide gel electrophoresis, selected for detailed comparison) exhibited greater densities 30-min post-exposure compared with pre-exposure values. A greater number of echinocytes were observed following CEW exposure. On the basis of these results it appears that, during the strong muscle contractions produced by TASER CEWs, a specific population of red blood cells (RBCs) may be released from the spleen or other reservoirs within the body. The total time of CEW exposure in the present study was relatively long compared with exposures in common law-enforcement scenarios. Despite statistically significant changes in red blood cell counts (and other measures directly related to RBCs), the alterations were short-lived. The transient nature of the changes would be likely to counteract any potentially detrimental effects. [ABSTRACT FROM AUTHOR] AB - Copyright of Forensic Science, Medicine & Pathology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ERYTHROCYTES KW - WILD boar KW - MEMBRANE proteins KW - HEMOGLOBIN KW - MUSCLE contraction KW - Conducted energy weapon KW - Electro-muscular disruption KW - Electronic control device KW - Erythrocytes KW - Muscle contraction KW - Red blood cells KW - TASER N1 - Accession Number: 89583162; Jauchem, James 1; Email Address: james.r.jauchem.civ@mail.mil Bernhard, Joshua 1 Cerna, Cesario 2 Lim, Tiffany 1 Seaman, Ronald 2 Tarango, Melissa 2; Affiliation: 1: Bio-Effects Division, Human Effectiveness Directorate, 711th Human Performance Wing, U.S. Air Force Research Laboratory, 711HPW/RHDR, 4141 Petroleum Road Fort Sam Houston 78234 USA 2: General Dynamics Information Technology, Fort Sam Houston 78234 USA; Source Info: Sep2013, Vol. 9 Issue 3, p308; Subject Term: ERYTHROCYTES; Subject Term: WILD boar; Subject Term: MEMBRANE proteins; Subject Term: HEMOGLOBIN; Subject Term: MUSCLE contraction; Author-Supplied Keyword: Conducted energy weapon; Author-Supplied Keyword: Electro-muscular disruption; Author-Supplied Keyword: Electronic control device; Author-Supplied Keyword: Erythrocytes; Author-Supplied Keyword: Muscle contraction; Author-Supplied Keyword: Red blood cells; Author-Supplied Keyword: TASER; NAICS/Industry Codes: 112999 All other miscellaneous animal production; Number of Pages: 13p; Document Type: Article L3 - 10.1007/s12024-013-9423-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89583162&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jauchem, James T1 - Blood lactate concentration after exposure to conducted energy weapons (including TASER devices): is it clinically relevant? JO - Forensic Science, Medicine & Pathology JF - Forensic Science, Medicine & Pathology Y1 - 2013/09// VL - 9 IS - 3 M3 - Article SP - 386 EP - 394 SN - 1547769X AB - In previous studies, blood lactate concentration (BLac) consistently increased in anesthetized animals and in human subjects after exposures to TASER conducted energy weapons (CEWs). Some have suggested the increased BLac would have detrimental consequences. In the current review, the following are evaluated: (a) the nature of muscle contractions due to CEWs, (b) general aspects of increased BLac, (c) previous studies of conventional neuromuscular electrical stimulation and CEW exposures, and (d) BLac in disease states. On the basis of these analyses, one can conclude that BLac, per se (independent of acidemia), would not be clinically relevant immediately after short-duration CEW applications, due to the short time course of any increase. [ABSTRACT FROM AUTHOR] AB - Copyright of Forensic Science, Medicine & Pathology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BLOOD lactate KW - MUSCLE contraction KW - NEUROMUSCULAR system KW - DISEASES KW - ACIDOSIS KW - Conducted energy weapon KW - Electro-muscular disruption KW - Electronic control device KW - Lactate KW - Muscle contraction KW - TASER N1 - Accession Number: 89583159; Jauchem, James 1; Email Address: james.r.jauchem.civ@mail.mil; Affiliation: 1: Bioeffects Division, Human Effectiveness Directorate, 711th Human Performance Wing, US Air Force Research Laboratory, 711 HPW/RHDR, 4141 Petroleum Road Fort Sam Houston 78234 USA; Source Info: Sep2013, Vol. 9 Issue 3, p386; Subject Term: BLOOD lactate; Subject Term: MUSCLE contraction; Subject Term: NEUROMUSCULAR system; Subject Term: DISEASES; Subject Term: ACIDOSIS; Author-Supplied Keyword: Conducted energy weapon; Author-Supplied Keyword: Electro-muscular disruption; Author-Supplied Keyword: Electronic control device; Author-Supplied Keyword: Lactate; Author-Supplied Keyword: Muscle contraction; Author-Supplied Keyword: TASER; Number of Pages: 9p; Document Type: Article L3 - 10.1007/s12024-013-9436-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89583159&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wu, Yongpeng AU - Xiao, Chengshan AU - Gao, Xiqi AU - Matyjas, John D. AU - Ding, Zhi T1 - Linear Precoder Design for MIMO Interference Channels with Finite-Alphabet Signaling. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2013/09// VL - 61 IS - 9 M3 - Article SP - 3766 EP - 3780 SN - 00906778 AB - This paper investigates the linear precoder design for K-user interference channels of multiple-input multiple-output (MIMO) transceivers under finite alphabet inputs. We first obtain general explicit expressions of the achievable rate for users in the MIMO interference channel systems. We study optimal transmission strategies in both low and high signal-to-noise ratio (SNR) regions. Given finite alphabet inputs, we show that a simple power allocation design achieves optimal performance at high SNR whereas the well-known interference alignment technique for Gaussian inputs only utilizes a partial interference-free signal space for transmission and leads to a constant rate loss when applied naively to finite-alphabet inputs. Moreover, we establish necessary conditions for the linear precoder design to achieve weighted sum-rate maximization. We also present an efficient iterative algorithm for determining precoding matrices of all the users. Our numerical results demonstrate that the proposed iterative algorithm achieves considerably higher sum-rate under practical QAM inputs than other known methods. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOBILE communication systems KW - RESEARCH KW - INTERFERENCE channels (Telecommunications) KW - RADIO transmitter-receivers KW - MIMO systems -- Performance KW - SIGNAL-to-noise ratio KW - TRANSMITTERS (Communication) KW - Finite alphabet KW - interference channel KW - Interference channels KW - linear precoding KW - MIMO KW - Receivers KW - Signal to noise ratio KW - Transmitters KW - Vectors N1 - Accession Number: 90677771; Wu, Yongpeng 1 Xiao, Chengshan 2 Gao, Xiqi 1 Matyjas, John D. 3 Ding, Zhi 4; Affiliation: 1: National Mobile Communications Research Laboratory, Southeast University, Nanjing, 210096, P. R. China 2: Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA 3: Air Force Research Laboratory/RIT, Rome, NY 13441, USA 4: Department of Electrical and Computer Engineering, University of California, Davis, CA 95616, USA; Source Info: Sep2013, Vol. 61 Issue 9, p3766; Subject Term: MOBILE communication systems; Subject Term: RESEARCH; Subject Term: INTERFERENCE channels (Telecommunications); Subject Term: RADIO transmitter-receivers; Subject Term: MIMO systems -- Performance; Subject Term: SIGNAL-to-noise ratio; Subject Term: TRANSMITTERS (Communication); Author-Supplied Keyword: Finite alphabet; Author-Supplied Keyword: interference channel; Author-Supplied Keyword: Interference channels; Author-Supplied Keyword: linear precoding; Author-Supplied Keyword: MIMO; Author-Supplied Keyword: Receivers; Author-Supplied Keyword: Signal to noise ratio; Author-Supplied Keyword: Transmitters; Author-Supplied Keyword: Vectors; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 15p; Document Type: Article L3 - 10.1109/TCOMM.2013.072213.130132 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90677771&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yang, Guo-Min AU - Wu, Jing AU - Lou, Jing AU - Liu, Ming AU - Sun, Nian X. T1 - Low-Loss Magnetically Tunable Bandpass Filters With YIG Films. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2013/09// VL - 49 IS - 9 M3 - Article SP - 5063 EP - 5068 SN - 00189464 AB - A magnetically tunable bandpass filter (BPF) with a yttrium iron garnet (YIG) film deposited on the gadolinium gallium garnet (GGG) substrate have been designed, fabricated, and characterized. Single-crystal YIG films at their ferromagnetic resonance were adopted as the resonator, which was coupled to a T-shaped microstrip coupling structure to form a bandpass filter design. The operating frequency of the BPF can be tuned via a bias magnetic field, and a large tunability of the operation frequency of 190–840 MHz with relatively small bias fields of 50–250 Oe, together with a low insertion loss of < 2 dB. This is equivalent to 12%–54% of the central frequency of the bandpass filter. Double-sided YIG films were used to enhance the filter bandwidth, and a maximum 3-dB bandwidth of 57 MHz was realized with the bias field of 155 Oe. These demonstrated magnetically tunable bandpass filters are very compact and energy efficient, which could have many applications in radio frequency (RF) front and other microwave circuits. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BANDPASS filters KW - GADOLINIUM KW - THIN films KW - YTTRIUM iron garnet KW - SUBSTRATES (Materials science) KW - MICROFABRICATION KW - FERROMAGNETIC resonance KW - Ferromagnetic resonance KW - magnetically tunable bandpass filters KW - yttrium iron garnet (YIG)–gadolinium gallium garnet (YIG-GGG) N1 - Accession Number: 89927238; Yang, Guo-Min 1 Wu, Jing 2 Lou, Jing 3 Liu, Ming 4 Sun, Nian X. 5; Affiliation: 1: Key Laboratory of Wave Scattering and Remote Sensing Information, Department of Communication Science and Engineering, Fudan University, Shanghai, China 2: Boston Scientific, Natick, MA, USA 3: Hitachi Global Storage Technologies, San Jose, CA, USA 4: Air Force Research Laboratory, Dayton, OH, USA 5: Department of Electrical and Computer Engineering, Northeastern University, Boston, MA, USA; Source Info: Sep2013, Vol. 49 Issue 9, p5063; Subject Term: BANDPASS filters; Subject Term: GADOLINIUM; Subject Term: THIN films; Subject Term: YTTRIUM iron garnet; Subject Term: SUBSTRATES (Materials science); Subject Term: MICROFABRICATION; Subject Term: FERROMAGNETIC resonance; Author-Supplied Keyword: Ferromagnetic resonance; Author-Supplied Keyword: magnetically tunable bandpass filters; Author-Supplied Keyword: yttrium iron garnet (YIG)–gadolinium gallium garnet (YIG-GGG); Number of Pages: 6p; Document Type: Article L3 - 10.1109/TMAG.2013.2253114 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89927238&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bhat, Surendra S. AU - Narayanan, Ram M. AU - Rangaswamy, Muralidhar T1 - Bandwidth Sharing and Scan Scheduling in Multimodal Radar with Communications and Tracking. JO - IETE Journal of Research JF - IETE Journal of Research Y1 - 2013/09//Sep/Oct2013 VL - 59 IS - 5 M3 - Article SP - 551 EP - 562 PB - Taylor & Francis Ltd SN - 03772063 AB - This paper addresses two issues related to multi-functional radio frequency (RF) systems: Bandwidth sharing between radar surveillance and communications, and scan scheduling during radar surveillance and radar tracking. Bandwidth is a very scarce commodity which must be managed with diligence for optimal system performance. Multi-objective optimization is used to arrive at solutions making the best use of available bandwidth between radar and communications. Bandwidth allocation for radar is based on the need to unambiguously resolve various scattering features of the target and their spatial arrangement. We divide the surveillance space into angular sectors and use fuzzy logic to arrive at priorities for each sector. We also consider the problem of scan scheduling between tracking and surveillance modes for the multimodal radar and introduce the concept of partial passes to increase the number of visits for tracking sectors. Static radar scheduling methods are used for specific target scenarios, while dynamic radar scheduling is introduced to periodically adapt the algorithm to the current target scenario. The algorithms are applied for representative target scenarios. Tracking is performed using the particle filter algorithm. The scheduling algorithms are analyzed using key performance parameters. [ABSTRACT FROM AUTHOR] AB - Copyright of IETE Journal of Research is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO frequency KW - BANDWIDTHS KW - RADAR KW - FUZZY logic KW - MONTE Carlo method KW - Bandwidth optimization KW - Multi-functional radio frequency systems KW - Particle filter KW - Radar scheduling KW - Task priority N1 - Accession Number: 93981727; Bhat, Surendra S. 1; Email Address: surendrasbhat@gmail.com Narayanan, Ram M. 1; Email Address: ram@engr.psu.edu Rangaswamy, Muralidhar 2; Email Address: muralidhar.rangaswamy@us.af.mil; Affiliation: 1: Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802 2: Radio Frequency Exploitation Technology Branch, Air Force Research Laboratory, AFRL/RYAP, Wright-Patterson AFB, OH 45433 USA; Source Info: Sep/Oct2013, Vol. 59 Issue 5, p551; Subject Term: RADIO frequency; Subject Term: BANDWIDTHS; Subject Term: RADAR; Subject Term: FUZZY logic; Subject Term: MONTE Carlo method; Author-Supplied Keyword: Bandwidth optimization; Author-Supplied Keyword: Multi-functional radio frequency systems; Author-Supplied Keyword: Particle filter; Author-Supplied Keyword: Radar scheduling; Author-Supplied Keyword: Task priority; Number of Pages: 12p; Document Type: Article L3 - 10.4103/0377-2063.123761 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93981727&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Garcia, Eloy AU - Cao, Yongcan AU - Yu, Han AU - Antsaklis, Panos AU - Casbeer, David T1 - Decentralised event-triggered cooperative control with limited communication. JO - International Journal of Control JF - International Journal of Control Y1 - 2013/09// VL - 86 IS - 9 M3 - Article SP - 1479 EP - 1488 SN - 00207179 AB - This note studies event-triggered control of Multi-Agent Systems (MAS) with first-order integrator dynamics. It extends previous work on event-triggered consensus by considering limited communication capabilities through strict peer-to-peer non-continuous information exchange. The approach provides both a decentralised control law and a decentralised communication policy. Communication events require no global information and are based only on local state errors; agents do not require a global sampling period or synchronous broadcasting as in sampled-data approaches. The proposed decentralised event-triggered control technique guarantees that the inter-event times for each agent are strictly positive. Finally, the ideas in this note are used to consider the practical scenario where agents are able to exchange only quantised measurements of their states. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Control is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COOPERATIVE control systems KW - INFORMATION theory KW - MULTIAGENT systems KW - INTEGRATORS KW - PEER-to-peer architecture (Computer networks) KW - INFORMATION sharing KW - ERROR analysis (Mathematics) KW - consensus KW - event-triggered control KW - multi-agent systems KW - quantisation N1 - Accession Number: 89870470; Garcia, Eloy 1 Cao, Yongcan 2 Yu, Han 3 Antsaklis, Panos 3 Casbeer, David 2; Affiliation: 1: Infoscitex Corp., Dayton, United States 2: Air Force Research Laboratory, Control Science Center of Excellence, Wright-Patterson AFB, OH, United States 3: University of Notre Dame, Department of Electrical Engineering, Notre Dame, IN, United States; Source Info: Sep2013, Vol. 86 Issue 9, p1479; Subject Term: COOPERATIVE control systems; Subject Term: INFORMATION theory; Subject Term: MULTIAGENT systems; Subject Term: INTEGRATORS; Subject Term: PEER-to-peer architecture (Computer networks); Subject Term: INFORMATION sharing; Subject Term: ERROR analysis (Mathematics); Author-Supplied Keyword: consensus; Author-Supplied Keyword: event-triggered control; Author-Supplied Keyword: multi-agent systems; Author-Supplied Keyword: quantisation; Number of Pages: 10p; Document Type: Article L3 - 10.1080/00207179.2013.787647 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89870470&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schmit, Ryan F. AU - Grove, James E. AU - Ahmed, Anwar T1 - Examining Passive Flow Control using High Speed Shadowgraph Images in a Mach 1.5 Cavity Flow Field. JO - International Journal of Flow Control JF - International Journal of Flow Control Y1 - 2013/09// VL - 5 IS - 3 M3 - Article SP - 153 EP - 186 SN - 17568250 AB - A rectangular cavity with an L/D of 5.67 was tested at Mach 1.5 with a corresponding Reynolds number of 7.35 × 106/m. High speed shadowgraph movies were simultaneously sampled with dynamic pressure sensors at 75 kHz. Fourier analysis was performed on the high speed movies as well as the dynamic pressure data, which resulted in the determination of spatial and temporal characteristics of the dominant cavity frequencies in the flow field. Four passive flow control devices were tested, two of which have historically performed well at reducing the acoustic tones and broadband noise levels. The other two devices were less effective. Flow physics based on the detailed analysis of the high speed shadowgraphs and dynamic pressures sensors is presented. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Flow Control is the property of Multi-Science Publishing Co Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLOW control (Data transmission systems) KW - SHADOW-pictures KW - REYNOLDS number KW - FOURIER analysis KW - ACOUSTICS (Physical sciences) N1 - Accession Number: 95012400; Schmit, Ryan F. 1 Grove, James E. 1 Ahmed, Anwar 2; Affiliation: 1: U.S Air Force Research Laboratory, 2130 Eight Street Wright-Patterson Air Force Base, OH 45433, USA 2: Auburn University, 211 Aerospace Engineering Bldg. Auburn, AL 36849-5338 USA; Source Info: Sep2013, Vol. 5 Issue 3, p153; Subject Term: FLOW control (Data transmission systems); Subject Term: SHADOW-pictures; Subject Term: REYNOLDS number; Subject Term: FOURIER analysis; Subject Term: ACOUSTICS (Physical sciences); Number of Pages: 34p; Document Type: Article L3 - 10.1260/1756-8250.5.3-4.153 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95012400&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sommers, Andrew D. AU - Yerkes, Kirk L. T1 - Using micro-structural surface features to enhance the convective flow boiling heat transfer of R-134a on aluminum. JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2013/09// VL - 64 M3 - Article SP - 1053 EP - 1063 SN - 00179310 AB - Abstract: The convective flow boiling performance of R-134a on various micro-structured aluminum surfaces produced using advanced manufacturing techniques is examined. More specifically, the boiling heat transfer coefficient of R-134a on a bare aluminum surface and three micro-structurally enhanced surfaces is calculated and compared to currently available, commercially enhanced tubes. Two of these enhanced surfaces were produced using photolithography and reactive ion etching techniques, and the third surface was produced by means of laser-ablation. Experiments were performed for mass fluxes between 100 and 600kg/m2 s and for heat fluxes between 5 and 30kW/m2. Excellent agreement with published correlations was observed during initial benchmarking on the baseline surface. The boiling heat transfer coefficients on Surfaces 2 and 3 (produced by reactive ion etching) were only modestly higher than the baseline surface; whereas, the heat transfer coefficients on Surface 4 were as much as 90–100% higher than the baseline surface which was attributed to the porous layer of sintered aluminum particles formed on top of the surface during the laser ablation process. This increase in boiling heat transfer performance was then further enhanced through the application of a hydrophobic coating to the surface. The laser ablation technique presented in this paper has broad applicability to metals other than aluminum, and its ability to produce complex micro-structural surface geometries is of special interest in advanced flow boiling and high heat flux applications where current heat transfer surface designs are often costly to fabricate. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT -- Convection KW - MICROSTRUCTURE KW - MANUFACTURING processes KW - HEAT transfer KW - PHOTOLITHOGRAPHY KW - LASER ablation KW - Contact angle KW - Flow boiling heat transfer KW - Laser ablation KW - Micro-grooves KW - Micro-posts KW - Nucleate boiling KW - R-134a N1 - Accession Number: 89342620; Sommers, Andrew D. 1; Email Address: sommerad@miamioh.edu Yerkes, Kirk L. 2; Email Address: kirk.yerkes@wpafb.af.mil; Affiliation: 1: Department of Mechanical and Manufacturing Engineering, Miami University, 650 East High Street, Oxford, OH 45056, USA 2: Aerospace Systems Directorate, Air Force Research Laboratory AFRL/RQQI, WPAFB, OH 45433, USA; Source Info: Sep2013, Vol. 64, p1053; Subject Term: HEAT -- Convection; Subject Term: MICROSTRUCTURE; Subject Term: MANUFACTURING processes; Subject Term: HEAT transfer; Subject Term: PHOTOLITHOGRAPHY; Subject Term: LASER ablation; Author-Supplied Keyword: Contact angle; Author-Supplied Keyword: Flow boiling heat transfer; Author-Supplied Keyword: Laser ablation; Author-Supplied Keyword: Micro-grooves; Author-Supplied Keyword: Micro-posts; Author-Supplied Keyword: Nucleate boiling; Author-Supplied Keyword: R-134a; NAICS/Industry Codes: 333994 Industrial Process Furnace and Oven Manufacturing; NAICS/Industry Codes: 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2013.05.053 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89342620&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alway-Cooper, Rebecca M AU - Theodore, Merlin AU - Anderson, David P AU - Ogale, Amod A T1 - Transient heat flow in unidirectional fiber–polymer composites during laser flash analysis: Experimental measurements and finite element modeling. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2013/09// VL - 47 IS - 19 M3 - Article SP - 2399 EP - 2411 SN - 00219983 AB - Laser flash analysis (LFA), an unsteady-state technique originally developed for measuring the thermal diffusivity of homogenous materials, was used to estimate the thermal conductivity of carbon fibers consolidated in an epoxy matrix to form axially aligned unidirectional composites. Experimental studies were conducted for P-25 and K-1100 mesophase pitch-based carbon fibers whose conductivity values bracket almost two orders of magnitude (∼10 and 1000 W/m·K). Experimentally determined fiber thermal conductivity values were generally consistent with those cited in the literature after appropriate corrections were applied to account for the extremely high conductivity (low thermal resistance) of highly graphitic fibers, relative to the graphite coating. Finite element analysis was used to simulate heat flow patterns that may occur in a uniaxial fiber–polymer composite due to the large differences in the thermal conductivities of carbon fibers and polymer matrices. Simulations reveal that fiber thermal conductivity is accurately determined from composite response for high volume fraction of fibers (≥0.6) regardless of fiber conductivity, or for lower conductivity fibers (10–100 W/m·K) regardless of volume fractions. However, for composites containing high thermal conductivity fibers (100–1000 W/m·K) at low volume fractions (≤0.2), fiber thermal conductivity may not be accurately determined due to transverse heat flow within the graphite layers that channel heat through the highly conductive fiber. Thus, under certain conditions, heat flow paths deviate from the one-dimensional heat flow assumption inherent to laser flash analysis and rule-of-mixtures. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON fibers KW - THERMAL conductivity KW - FINITE element method KW - THERMAL diffusivity KW - HEAT equation KW - Carbon fiber KW - finite element analysis KW - laser flash analysis KW - thermal conductivity N1 - Accession Number: 89629928; Alway-Cooper, Rebecca M 1 Theodore, Merlin 2 Anderson, David P 3 Ogale, Amod A 4; Affiliation: 1: Chemical Engineering Department and Center for Advanced Engineering Fibers and Films, Clemson University, Clemson, SC, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, AFRL/RX, Wright-Patterson Air Force Base, OH, USA, Universal Technology Corporation, Dayton, OH, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, AFRL/RX, Wright-Patterson Air Force Base, OH, USA, University of Dayton Research Institute, Dayton, OH, USA 4: Chemical Engineering Department and Center for Advanced Engineering Fibers and Films, Clemson University, Clemson, SC, USA ogale@clemson.edu; Source Info: Sep2013, Vol. 47 Issue 19, p2399; Subject Term: CARBON fibers; Subject Term: THERMAL conductivity; Subject Term: FINITE element method; Subject Term: THERMAL diffusivity; Subject Term: HEAT equation; Author-Supplied Keyword: Carbon fiber; Author-Supplied Keyword: finite element analysis; Author-Supplied Keyword: laser flash analysis; Author-Supplied Keyword: thermal conductivity; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 13p; Document Type: Article; Full Text Word Count: 6603 L3 - 10.1177/0021998312458130 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89629928&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yamada, Takahiro AU - Phelps, Donald K. AU - van Duin, Adri C. T. T1 - First principle and ReaxFF molecular dynamics investigations of formaldehyde dissociation on Fe(100) surface. JO - Journal of Computational Chemistry JF - Journal of Computational Chemistry Y1 - 2013/09// VL - 34 IS - 23 M3 - Article SP - 1982 EP - 1996 SN - 01928651 AB - Detailed formaldehyde adsorption and dissociation reactions on Fe(100) surface were studied using first principle calculations and molecular dynamics (MD) simulations, and results were compared with available experimental data. The study includes formaldehyde, formyl radical (HCO), and CO adsorption and dissociation energy calculations on the surface, adsorbate vibrational frequency calculations, density of states analysis of clean and adsorbed surfaces, complete potential energy diagram construction from formaldehyde to atomic carbon (C), hydrogen (H), and oxygen (O), simulation of formaldehyde adsorption and dissociation reaction on the surface using reactive force field, ReaxFF MD, and reaction rate calculations of adsorbates using transition state theory (TST). Formaldehyde and HCO were adsorbed most strongly at the hollow (fourfold) site. Adsorption energies ranged from −22.9 to −33.9 kcal/mol for formaldehyde, and from −44.3 to −66.3 kcal/mol for HCO, depending on adsorption sites and molecular direction. The dissociation energies were investigated for the dissociation paths: formaldehyde → HCO + H, HCO → H + CO, and CO → C + O, and the calculated energies were 11.0, 4.1, and 26.3 kcal/mol, respectively. ReaxFF MD simulation results were compared with experimental surface analysis using high resolution electron energy loss spectrometry (HREELS) and TST based reaction rates. ReaxFF simulation showed less reactivity than HREELS observation at 310 and 523 K. ReaxFF simulation showed more reactivity than the TST based rate for formaldehyde dissociation and less reactivity than TST based rate for HCO dissociation at 523 K. TST-based rates are consistent with HREELS observation. © 2013 Wiley Periodicals, Inc. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Computational Chemistry is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FORMALDEHYDE KW - MOLECULAR dynamics KW - DISSOCIATION (Chemistry) KW - IRON KW - METALLIC surfaces KW - CHEMICAL reactions KW - MOLECULAR dynamics -- Simulation methods KW - TRANSITION state theory (Chemistry) KW - density functional theory KW - density of state KW - formaldehyde KW - iron surface KW - molecular dynamics KW - ReaxFF KW - surface reaction KW - transition state theory KW - Vienna ab initio simulation package N1 - Accession Number: 89305382; Yamada, Takahiro 1 Phelps, Donald K. 2 van Duin, Adri C. T. 3; Affiliation: 1: Division of Energy and Environment, University of Dayton Research Institute 2: Air Force Research Laboratory 3: Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park; Source Info: Sep2013, Vol. 34 Issue 23, p1982; Subject Term: FORMALDEHYDE; Subject Term: MOLECULAR dynamics; Subject Term: DISSOCIATION (Chemistry); Subject Term: IRON; Subject Term: METALLIC surfaces; Subject Term: CHEMICAL reactions; Subject Term: MOLECULAR dynamics -- Simulation methods; Subject Term: TRANSITION state theory (Chemistry); Author-Supplied Keyword: density functional theory; Author-Supplied Keyword: density of state; Author-Supplied Keyword: formaldehyde; Author-Supplied Keyword: iron surface; Author-Supplied Keyword: molecular dynamics; Author-Supplied Keyword: ReaxFF; Author-Supplied Keyword: surface reaction; Author-Supplied Keyword: transition state theory; Author-Supplied Keyword: Vienna ab initio simulation package; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 16p; Illustrations: 7 Diagrams, 13 Charts, 11 Graphs; Document Type: Article L3 - 10.1002/jcc.23320 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89305382&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bisek, Nicholas J. AU - Gosse, Ryan AU - Poggie, Jonathan T1 - Computational Study of Impregnated Ablator for Improved Magnetohydrodynamic Heat Shield. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2013/09//Sep/Oct2013 VL - 50 IS - 5 M3 - Article SP - 927 EP - 936 SN - 00224650 AB - A dipole magnet was used to locally reduce surface heating on a fin that extended from a blunt elliptic cone geometry traveling in air at hypersonic speeds. The concept relies on magnetohydrodynamics to generate a force in the weakly ionized postshock air, which decelerates the incoming flow. A three-dimensional, compressible, thermochemical nonequilibrium, fluid code was loosely coupled to a magnetohydrodynamics module to compute the resultant flowfield, which included the electric field. The results showed that the resultant electric field had a minor contributor to the current and consequently to the magnetic body force. In the baseline scenario, the applied magnet was ineffective at perturbing the local shock due to the unseeded flow's level of electrical conductivity. A potassium-infused ablator was incorporated into the vehicle's nose to improve the flow's low electrical conductivity and protect the geometry from the high thermal loads experienced at the stagnation point. A one-dimensional equilibrium material response code was developed and used to model the ablative surface. The seed particles introduced into the fluid domain substantially increased the electrical conductivity of the flow. The resultant magnetic body force moved the triple point up the fin face, which changed the local surface properties to an extent that could be measured in flight. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETOHYDRODYNAMICS KW - ELECTRIC fields KW - ELECTRIC conductivity KW - ABLATIVE materials KW - VEHICLES KW - EQUIPMENT & supplies KW - SURFACE properties N1 - Accession Number: 91565776; Bisek, Nicholas J. 1 Gosse, Ryan 1 Poggie, Jonathan 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512; Source Info: Sep/Oct2013, Vol. 50 Issue 5, p927; Subject Term: MAGNETOHYDRODYNAMICS; Subject Term: ELECTRIC fields; Subject Term: ELECTRIC conductivity; Subject Term: ABLATIVE materials; Subject Term: VEHICLES; Subject Term: EQUIPMENT & supplies; Subject Term: SURFACE properties; Number of Pages: 10p; Document Type: Article L3 - 10.2514/1.A32357 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91565776&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chao, Susan Y. AU - Zarzabal, Lee A. AU - Walker, Sandra M. AU - Herzog, Catherine M. AU - Eilerman, Patricia A. AU - Luce, Beverly K. AU - Carnahan, David H. T1 - Estimating Diabetes Prevalence in the Military Health System Population From 2006 to 2010. JO - Military Medicine JF - Military Medicine Y1 - 2013/09// VL - 178 IS - 9 M3 - Article SP - 986 EP - 993 PB - AMSUS SN - 00264075 AB - Evidence-based articles have demonstrated an increase in diabetes prevalence, but diabetes prevalence in the enrolled Military Health System population was previously understudied. Variability in diabetes prevalence rates calculated from 5 groups of algorithms was examined in the Military Health System population (3 million enrollees per year) from fiscal years 2006 to 2010. Time trend analysis and rate comparisons to the U.S. population were also performed. Increasing linear trends in diabetes prevalence from 2006 to 2010 were seen in all algorithms, though considerable rate variation was observed within each study year. Prevalence increased with age, except for a slight decrease in those ≥75 years. Overall diagnosed diabetes prevalence ranged from 7.26% to 11.22% in 2006 and from 8.29% to 13.55% in 2010. Prevalence among active duty members remained stable, but a significant upward trend was observed among nonactive duty members across study years. Age-standardized rates among nonactive duty females were higher than the U.S. population rates from 2006 to 2010. This study demonstrates prevalence rate variability because of differing case algorithms and shows evidence of a growing diabetes population in the Military Health System, specifically within the nonactive duty 45 years and older demographic groups. Further research of this population should focus on validation of case definitions. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIABETES -- Research KW - MILITARY medicine KW - RESEARCH KW - MILITARY personnel -- Diseases KW - MILITARY personnel -- Health KW - POPULATION N1 - Accession Number: 90276639; Chao, Susan Y. 1 Zarzabal, Lee A. 1,2 Walker, Sandra M. 1 Herzog, Catherine M. 1 Eilerman, Patricia A. 1 Luce, Beverly K. 1 Carnahan, David H. 1; Affiliation: 1: Healthcare Informatics Division, United States Air Force Medical Support Agency, 3515 S General McMullen Suite 200, San Antonio. TX 78226 2: United States Air Force 59th Medical Detachment Wing/Science and Technology; Source Info: Sep2013, Vol. 178 Issue 9, p986; Subject Term: DIABETES -- Research; Subject Term: MILITARY medicine; Subject Term: RESEARCH; Subject Term: MILITARY personnel -- Diseases; Subject Term: MILITARY personnel -- Health; Subject Term: POPULATION; Number of Pages: 8p; Illustrations: 3 Charts, 2 Graphs; Document Type: Article L3 - 10.7205/M1LMED-D-13-00147 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90276639&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Degnan, J. H. AU - Amdahl, D. J. AU - Domonkos, M. AU - Lehr, F. M. AU - Grabowski, C. AU - Robinson, P. R. AU - Ruden, E. L. AU - White, W. M. AU - Wurden, G. A. AU - Intrator, T. P. AU - Sears, J. AU - Weber, T. AU - Waganaar, W. J. AU - Frese, M. H. AU - Frese, S. D. AU - Camacho, J. F. AU - Coffey, S. K. AU - Makhin, V. AU - Roderick, N. F. AU - Gale, D. G. T1 - Recent magneto-inertial fusion experiments on the field reversed configuration heating experiment. JO - Nuclear Fusion JF - Nuclear Fusion Y1 - 2013/09// VL - 53 IS - 9 M3 - Article SP - 1 EP - 10 SN - 00295515 AB - Magneto-inertial fusion (MIF) approaches take advantage of an embedded magnetic field to improve plasma energy confinement by reducing thermal conduction relative to conventional inertial confinement fusion (ICF). MIF reduces required precision in the implosion and the convergence ratio. Since 2008 (Wurden et al 2008 IAEA 2008 Fusion Energy Conf. (Geneva, Switzerland, 13-18 October) IC/P4-13 LA-UR-08-0796) and since our prior refereed publication on this topic (Degnan et al 2008 IEEE Trans. Plasma Sci. 36 80), AFRL and LANL have developed further one version of MIF.We have (1) reliably formed, translated, and captured field reversed configurations (FRCs) in magnetic mirrors inside metal shells or liners in preparation for subsequent compression by liner implosion; (2) imploded a liner with interior magnetic mirror field, obtaining evidence for compression of a 1.36 T field to 540 T; (3) performed a full system experiment of FRC formation, translation, capture, and imploding liner compression operation; (4) identified by comparison of 2D-MHD simulation and experiments factors limiting the closed-field lifetime of FRCs to about half that required for good liner compression of FRCs to multi-keV, 1019 ion cm-3, high energy density plasma (HEDP) conditions; and (5) designed and prepared hardware to increase that closed-field FRC lifetime to the required amount. Those lifetime experiments are now underway, with the goal of at least doubling closed-field FRC lifetimes and performing FRC implosions to HEDP conditions this year. These experiments have obtained imaging evidence of FRC rotation, and of initial rotation control measures slowing and stopping such rotation. Important improvements in fidelity of simulation to experiment have been achieved, enabling improved guidance and understanding of experiment design and performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Nuclear Fusion is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUCLEAR fusion KW - PHYSICS experiments KW - REVERSED field pinches KW - HEATING KW - THERMAL conductivity KW - INERTIAL confinement fusion N1 - Accession Number: 90084207; Degnan, J. H. 1 Amdahl, D. J. 1 Domonkos, M. 1 Lehr, F. M. 1 Grabowski, C. 1 Robinson, P. R. 1 Ruden, E. L. 1 White, W. M. 1 Wurden, G. A. 2 Intrator, T. P. 2 Sears, J. 2 Weber, T. 2 Waganaar, W. J. 2 Frese, M. H. 3 Frese, S. D. 3 Camacho, J. F. 3 Coffey, S. K. 3 Makhin, V. 3 Roderick, N. F. 3 Gale, D. G. 4; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland Air Force Base, NM 87117, USA 2: Los Alamos National Laboratory, MS-E526, Los Alamos, NM 87545, USA 3: NumerEx, LLC, Albuquerque, NM 87106, USA 4: SAIC, Albuquerque, NM 81313, USA; Source Info: 2013, Vol. 53 Issue 9, p1; Subject Term: NUCLEAR fusion; Subject Term: PHYSICS experiments; Subject Term: REVERSED field pinches; Subject Term: HEATING; Subject Term: THERMAL conductivity; Subject Term: INERTIAL confinement fusion; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; Number of Pages: 10p; Document Type: Article L3 - 10.1088/0029-5515/53/9/093003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90084207&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Meher, S. AU - Rojhirunsakool, T. AU - Hwang, J.Y. AU - Nag, S. AU - Tiley, J. AU - Banerjee, R. T1 - Coarsening behaviour of gamma prime precipitates and concurrent transitions in the interface width in Ni-14 at.% Al-7 at.% Cr. JO - Philosophical Magazine Letters JF - Philosophical Magazine Letters Y1 - 2013/09// VL - 93 IS - 9 M3 - Article SP - 521 EP - 530 PB - Taylor & Francis Ltd SN - 09500839 AB - Coupling atom probe tomography and transmission electron microscopy, the temporal evolution ofγ′ precipitate morphology and size distribution and compositional width of theγ/γ′ interface, have been tracked in a model Ni-14Al-7Cr (at.%) alloy, during isothermal annealing at 800 °C subsequent to rapid quenching. During the initial annealing period, coalescence-dominated growth and coarsening ofγ′ precipitates are accompanied by a gradual decrease in the interface width, eventually leading to classical LSW coarsening with a constant interface width at extended annealing time periods. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Magazine Letters is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OSTWALD ripening KW - PHASE transformations (Physics) KW - INTERFACES (Physical sciences) KW - NICKEL alloys KW - ANNEALING of metals KW - PRECIPITATION (Chemistry) KW - APT KW - coarsening KW - interface KW - nickel superalloy KW - TEM N1 - Accession Number: 89931250; Meher, S. 1 Rojhirunsakool, T. 1 Hwang, J.Y. 2 Nag, S. 1 Tiley, J. 3 Banerjee, R. 1; Email Address: Rajarshi.Banerjee@unt.edu; Affiliation: 1: Center for Advanced Research and Technology, Department of Materials Science and Engineering, University of North Texas, Denton, TX, USA 2: Composite Materials, Korea Institute of Science and Technology, Jeonbuk, South Korea 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH, USA; Source Info: Sep2013, Vol. 93 Issue 9, p521; Subject Term: OSTWALD ripening; Subject Term: PHASE transformations (Physics); Subject Term: INTERFACES (Physical sciences); Subject Term: NICKEL alloys; Subject Term: ANNEALING of metals; Subject Term: PRECIPITATION (Chemistry); Author-Supplied Keyword: APT; Author-Supplied Keyword: coarsening; Author-Supplied Keyword: interface; Author-Supplied Keyword: nickel superalloy; Author-Supplied Keyword: TEM; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 10p; Document Type: Article L3 - 10.1080/09500839.2013.816446 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89931250&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heinrich, Jonathon R. AU - Cooke, David L. T1 - Dynamics of positive probes in underdense, strongly magnetized, E×B drifting plasma: Particle-in-cell simulations. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2013/09// VL - 20 IS - 9 M3 - Article SP - 093503 EP - 093503-7 PB - American Institute of Physics SN - 1070664X AB - Electron trapping, electron heating, space-charge wings, wake eddies, and current collection by a positive probe in E×B drifting plasma were studied in three-dimensional electromagnetic particle-in-cell simulations. In these simulations, electrons and ions were magnetized with respect to the probe and the plasma was underdense (ωpe<ωce). A large drift velocity (Mach 4.5 with respect to the ion acoustic speed) between the plasma and probe was created with background electric and magnetic fields. Four distinct regions developed in the presences of the positive probe: a quasi-trapped electron region, an electron-depletion wing, an ion-rich wing, and a wake region. We report on the observations of strong electron heating mechanisms, space-charge wings, ion cyclotron charge-density eddies in the wake, electron acceleration due to a magnetic presheath, and the current-voltage relationship. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON traps KW - DYNAMICAL systems KW - MAGNETIZATION KW - SIMULATION methods & models KW - ELECTROMAGNETISM KW - CYCLOTRON resonance KW - ELECTRON accelerators N1 - Accession Number: 90480696; Heinrich, Jonathon R. 1 Cooke, David L. 1; Affiliation: 1: Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117,; Source Info: Sep2013, Vol. 20 Issue 9, p093503; Subject Term: ELECTRON traps; Subject Term: DYNAMICAL systems; Subject Term: MAGNETIZATION; Subject Term: SIMULATION methods & models; Subject Term: ELECTROMAGNETISM; Subject Term: CYCLOTRON resonance; Subject Term: ELECTRON accelerators; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.4821070 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90480696&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reid, Michael R. AU - Scharfe, David B. AU - Webb, Rebecca N. T1 - Computational evaluation of a latent heat energy storage system. JO - Solar Energy JF - Solar Energy Y1 - 2013/09// VL - 95 M3 - Article SP - 99 EP - 105 SN - 0038092X AB - Abstract: A system capable of receiving, absorbing, and converting solar energy was designed for use on a satellite in low Earth orbit. The proposed system, an alternative to conventional photovoltaic panels paired with electrochemical batteries, has at the core of its design a latent heat based energy storage system that employs silicon as the phase change material. Thermal to electric conversion is achieved by thermophotovoltaic cells that then provide electrical power for various satellite components. The system was evaluated computationally. Through prediction of the melt and solidification fronts the amount of solar irradiation required to fully utilize the phase change material was determined to be between 4 and 5kW depending on the orbit. The average temperature of the emitter, used to power the thermophotovoltaic cells, was also predicted throughout an orbit. The emitter temperature range, 1450–1850K, is well-suited for use with commercially available gallium antimony cells. [Copyright &y& Elsevier] AB - Copyright of Solar Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LATENT heat KW - HEAT storage KW - THERMOPHOTOVOLTAIC cells KW - PHASE change materials KW - ANTIMONY KW - PREDICTION models KW - Phase change material KW - Radiative heat transfer KW - Thermal energy storage KW - Thermophotovoltaic cell N1 - Accession Number: 89615290; Reid, Michael R. 1 Scharfe, David B. 2 Webb, Rebecca N. 3; Email Address: rwebb@uccs.edu; Affiliation: 1: United States Air Force, Colorado Springs, CO, USA 2: ERC, Inc., Edwards AFB, CA, USA 3: Department of Mechanical and Aerospace Engineering, University of Colorado Colorado Springs, Colorado Springs, CO, USA; Source Info: Sep2013, Vol. 95, p99; Subject Term: LATENT heat; Subject Term: HEAT storage; Subject Term: THERMOPHOTOVOLTAIC cells; Subject Term: PHASE change materials; Subject Term: ANTIMONY; Subject Term: PREDICTION models; Author-Supplied Keyword: Phase change material; Author-Supplied Keyword: Radiative heat transfer; Author-Supplied Keyword: Thermal energy storage; Author-Supplied Keyword: Thermophotovoltaic cell; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.solener.2013.06.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89615290&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Clark, Michael D. AU - Leever, Benjamin J. T1 - Analysis of ITO cleaning protocol on surface properties and polymer: Fullerene bulk heterojunction solar cell performance. JO - Solar Energy Materials & Solar Cells JF - Solar Energy Materials & Solar Cells Y1 - 2013/09// VL - 116 M3 - Article SP - 270 EP - 274 SN - 09270248 AB - Abstract: In the traditional organic solar cell architecture, indium tin oxide (ITO) serves as the transparent electrode and substrate for solution-cast device layers. Hydrophobic contaminants are known to modify ITO wettability and other properties, making selection of an effective cleaning scheme essential. In this work, we demonstrate that certain solvent-based routines provide essentially equivalent surface properties as coupled solvent+UV-ozone protocols reported in literature. Surface energy analysis further reveals that solvent selection can effectively tune ITO charge transport. Fabricated devices showed comparable performance, indicating that interfacial resistances are not limiting factors in the model OSC system and that UV-ozone exposure could be eliminated to reduce commercialization costs. [Copyright &y& Elsevier] AB - Copyright of Solar Energy Materials & Solar Cells is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDIUM tin oxide KW - SOLAR cells KW - ELECTRODES KW - SOLVENTS KW - HETEROJUNCTIONS KW - FULLERENES KW - POLYMERS KW - CLEANING KW - Indium tin oxide KW - Organic electronics KW - Substrate cleaning KW - Surface energy KW - UV-ozone KW - X-ray photoelectron spectroscopy N1 - Accession Number: 89310406; Clark, Michael D. 1 Leever, Benjamin J. 1; Email Address: Benjamin.Leever@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Sep2013, Vol. 116, p270; Subject Term: INDIUM tin oxide; Subject Term: SOLAR cells; Subject Term: ELECTRODES; Subject Term: SOLVENTS; Subject Term: HETEROJUNCTIONS; Subject Term: FULLERENES; Subject Term: POLYMERS; Subject Term: CLEANING; Author-Supplied Keyword: Indium tin oxide; Author-Supplied Keyword: Organic electronics; Author-Supplied Keyword: Substrate cleaning; Author-Supplied Keyword: Surface energy; Author-Supplied Keyword: UV-ozone; Author-Supplied Keyword: X-ray photoelectron spectroscopy; NAICS/Industry Codes: 561720 Janitorial Services; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.solmat.2013.05.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89310406&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jelliss, Paul A. AU - Buckner, Steven W. AU - Chung, Stephen W. AU - Patel, Ashish AU - Guliants, Elena A. AU - Bunker, Christopher E. T1 - The use of 1,2-epoxyhexane as a passivating agent for core–shell aluminum nanoparticles with very high active aluminum content. JO - Solid State Sciences JF - Solid State Sciences Y1 - 2013/09// VL - 23 M3 - Article SP - 8 EP - 12 SN - 12932558 AB - Abstract: Aluminum nanoparticles synthesized by titanium (IV) isopropoxide-initiated decomposition of alane have been passivated and capped using oligomerization of 1,2-epoxyhexane. Preliminary synthetic protocols with this capping agent, where the nanoparticle formation reaction and passivation processes were both conducted at ambient temperatures, had resulted in nanoparticles that were highly unstable and that either oxidized rapidly upon exposure to air or were pyrophoric. Use of 1,2-epoxydodecane, on the other hand, had produced stable nanoparticles that were successfully characterized and reported. A modification of the procedure whereby the epoxyhexane passivation process is carried out at 85 °C for 30 min, has afforded surprisingly stable aluminum nanoparticles. Powder X-ray analysis and transmission electron microscopy reveal nanoparticle diameters on the order of 30 nm with 19 nm crystalline aluminum cores. The passivation process yields an extraordinarily high active aluminum (Al0) content of 83%, with degradation of the core to 52% active aluminum after 9 days exposure in a dry air chamber. Differential scanning calorimetry coupled with thermogravimetric analysis reveals distinct cap combustion and metal ignition exotherms, though they are not as well-defined as those found with their epoxydodecane-capped congener. With the additional observation of a metal melting endotherm, it is suggested that while carrying out the passivation process at an elevated temperature affords a higher degree of kinetic stabilization of the aluminum core, the passivation shell is inhomogeneous, possibly as a result of the polydisperse nature of the oligomerized epoxyhexane. [Copyright &y& Elsevier] AB - Copyright of Solid State Sciences is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEXANE KW - ALUMINUM KW - METAL nanoparticles KW - NANOPARTICLE synthesis KW - TITANIUM KW - DECOMPOSITION (Chemistry) KW - 1,2-Epoxyhexane KW - Aluminum KW - Core–shell nanoparticles KW - Oligomerization KW - Passivation N1 - Accession Number: 89615925; Jelliss, Paul A. 1; Email Address: jellissp@slu.edu Buckner, Steven W. 1; Email Address: buckners@slu.edu Chung, Stephen W. 1 Patel, Ashish 1 Guliants, Elena A. 2 Bunker, Christopher E. 3; Affiliation: 1: Department of Chemistry, Saint Louis University, 3501 Laclede Avenue, St. Louis, MO 63103, USA 2: University of Dayton Research Institute, Sensors Technology Office, Dayton, OH 45469, USA 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: Sep2013, Vol. 23, p8; Subject Term: HEXANE; Subject Term: ALUMINUM; Subject Term: METAL nanoparticles; Subject Term: NANOPARTICLE synthesis; Subject Term: TITANIUM; Subject Term: DECOMPOSITION (Chemistry); Author-Supplied Keyword: 1,2-Epoxyhexane; Author-Supplied Keyword: Aluminum; Author-Supplied Keyword: Core–shell nanoparticles; Author-Supplied Keyword: Oligomerization; Author-Supplied Keyword: Passivation; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.solidstatesciences.2013.06.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89615925&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bright, T. J. AU - Watjen, J. I. AU - Zhang, Z. M. AU - Muratore, C. AU - Voevodin, A. A. AU - Koukis, D. I. AU - Tanner, D. B. AU - Arenas, D. J. T1 - Infrared optical properties of amorphous and nanocrystalline Ta2O5 thin films. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/08/28/ VL - 114 IS - 8 M3 - Article SP - 083515 PB - American Institute of Physics SN - 00218979 AB - The optical constants of tantalum pentoxide (Ta2O5) are determined in a broad spectral region from the visible to the far infrared. Ta2O5 films of various thicknesses from approximately 170 to 1600 nm are deposited using reactive magnetron sputtering on Si substrates. X-ray diffraction shows that the as-deposited films are amorphous, and annealing in air at 800 °C results in the formation of nanocrystalline Ta2O5. Ellipsometry is used to obtain the dispersion in the visible and near-infrared. Two Fourier-transform infrared spectrometers are used to measure the transmittance and reflectance at wavelengths from 1 to 1000 μm. The surface topography and microstructure of the samples are examined using atomic force microscopy, confocal microscopy, and scanning electron microscopy. Classical Lorentz oscillators are employed to model the absorption bands due to phonons and impurities. A simple model is introduced to account for light scattering in the annealed films, which contain micro-cracks. For the unannealed samples, an effective-medium approximation is used to take into account the adsorbed moisture in the film and a Drude free-electron term is also added to model the broad background absorption. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TANTALUM oxide KW - RESEARCH KW - MAGNETRON sputtering KW - X-ray diffraction KW - WAVELENGTHS KW - ATOMIC force microscopy KW - PHONONS N1 - Accession Number: 90049058; Bright, T. J. 1 Watjen, J. I. 1 Zhang, Z. M. 1 Muratore, C. 2,3 Voevodin, A. A. 2 Koukis, D. I. 4 Tanner, D. B. 4 Arenas, D. J. 5; Affiliation: 1: George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, 2: Nanoelectronic Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433, 3: Department of Chemical and Materials Engineering, University of Dayton, Dayton, Ohio 45469, 4: Department of Physics, University of Florida, Gainesville, Florida 32611, 5: Department of Physics, University of North Florida, Jacksonville, Florida 32254,; Source Info: Aug2013, Vol. 114 Issue 8, p083515; Subject Term: TANTALUM oxide; Subject Term: RESEARCH; Subject Term: MAGNETRON sputtering; Subject Term: X-ray diffraction; Subject Term: WAVELENGTHS; Subject Term: ATOMIC force microscopy; Subject Term: PHONONS; Number of Pages: 10p; Illustrations: 1 Color Photograph, 2 Black and White Photographs, 2 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.4819325 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90049058&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Won Jin Kim AU - Min Ju Cho AU - Jangwon Seo AU - Bartsch, Carrie M. AU - Grote, James AU - Prasad, Paras N. T1 - Nanocomposite approaches for enhancing the DC and photoconductivity of DNA films. JO - Nanotechnology JF - Nanotechnology Y1 - 2013/08/23/ VL - 24 IS - 33 M3 - Article SP - 1 EP - 8 SN - 09574484 AB - Enhanced DC conductivity and photoconductivity of cationic carbazole tethered deoxyribonucleic acid (Cz-DNA) in film devices is achieved by incorporating mobility enhancers. An anthracene-based organic semiconductor (namely 4HPA-Ant) and the inorganic semiconductor cadmium sulfide (CdS) multipod nanocrystal (NC) were used as the mobility enhancers. Space charge limited current (SCLC) experiments show that hole mobility in CdS:Cz-DNA composite film is improved significantly, by about an order of magnitude, compared to the Cz-DNA film. Similarly, the DC conductivity of the composite film is slightly enhanced by 4HPA-Ant. The photoconductivity is also improved in the Cz-DNA composite, with both 4HPA-Ant and CdS multipod NCs. The enhancement in photocurrent is by more than an order of magnitude, as demonstrated by current-voltage (I-V) characterization using DNA composite photodetectors. [ABSTRACT FROM AUTHOR] AB - Copyright of Nanotechnology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOCONDUCTIVITY KW - NANOCOMPOSITE materials KW - DNA KW - ORGANIC semiconductors KW - CADMIUM sulfide KW - PHOTOCURRENTS KW - PHOTODETECTORS N1 - Accession Number: 90049978; Won Jin Kim 1 Min Ju Cho 2 Jangwon Seo 3 Bartsch, Carrie M. 4 Grote, James 4 Prasad, Paras N. 1; Email Address: pnprasad@buffalo.edu; Affiliation: 1: Institute for Lasers, Photonics and Biophotonics, Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA 2: Department of Chemistry, Research Institute for Natural Sciences, Korea University, 5 Anam-dong, Sungbuk-gu, Seoul 136-701, Korea 3: Department of Materials Science and Engineering, Seoul National University, ENG 455, Seoul 151-744, Korea 4: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RX) and Devices for Sensing Branch (AFRL/RYDD), Wright-Patterson AFB, OH 45433, USA; Source Info: 2013, Vol. 24 Issue 33, p1; Subject Term: PHOTOCONDUCTIVITY; Subject Term: NANOCOMPOSITE materials; Subject Term: DNA; Subject Term: ORGANIC semiconductors; Subject Term: CADMIUM sulfide; Subject Term: PHOTOCURRENTS; Subject Term: PHOTODETECTORS; Number of Pages: 8p; Document Type: Article L3 - 10.1088/0957-4484/24/33/335203 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90049978&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Yannian AU - Wang, Mengfei AU - White, Timothy J. AU - Bunning, Timothy J. AU - Li, Quan T1 - Azoarenes with Opposite Chiral Configurations: Light-Driven Reversible Handedness Inversion in Self-Organized Helical Superstructures. JO - Angewandte Chemie International Edition JF - Angewandte Chemie International Edition Y1 - 2013/08/19/ VL - 52 IS - 34 M3 - Article SP - 8925 EP - 8929 SN - 14337851 AB - The article focuses on the use of azoarenes with chiral configurations to promote light-driven induction of helicity and handedness inversion of self-organized helical superstructures. It states that the inversion of the helical structures will be found in different liquid crystal (LC) hosts and helical twisting powers (HTPs) from moderate to high state. It says that the strategy is demonstrated by changing the terminal chains and spacer lengths of the azoarene molecules. KW - HELICAL structure (Molecules) KW - HELICITY (Chemistry) KW - LIQUID crystals KW - ASYMMETRIC synthesis KW - SUPRAMOLECULAR chemistry KW - chiral conflict KW - handedness inversion KW - liquid crystals KW - self-organized helices KW - supramolecular chemistry N1 - Accession Number: 89703890; Li, Yannian 1 Wang, Mengfei 1 White, Timothy J. 2 Bunning, Timothy J. 2 Li, Quan 1; Affiliation: 1: Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, Kent, OH 44242 (USA) 2: Materials and Manufacturing Directorate, Air Force Research Laboratory WPAFB, Dayton, OH 45433 (USA); Source Info: Aug2013, Vol. 52 Issue 34, p8925; Subject Term: HELICAL structure (Molecules); Subject Term: HELICITY (Chemistry); Subject Term: LIQUID crystals; Subject Term: ASYMMETRIC synthesis; Subject Term: SUPRAMOLECULAR chemistry; Author-Supplied Keyword: chiral conflict; Author-Supplied Keyword: handedness inversion; Author-Supplied Keyword: liquid crystals; Author-Supplied Keyword: self-organized helices; Author-Supplied Keyword: supramolecular chemistry; Number of Pages: 5p; Document Type: Article L3 - 10.1002/anie.201303786 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89703890&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schwalbach, Edwin J. AU - Warren, James A. AU - Kuo-An Wu AU - Voorhees, Peter W. T1 - Phase-field crystal model with a vapor phase. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2013/08/15/ VL - 88 IS - 2-B M3 - Article SP - 1 EP - 14 SN - 15393755 AB - Phase-field crystal (PFC) models are able to resolve atomic length scale features of materials during temporal evolution over diffusive time scales. Traditional PFC models contain solid and liquid phases, however many important materials processing phenomena involve a vapor phase as well. In this work, we add a vapor phase to an existing PFC model and show realistic interfacial phenomena near the triple point temperature. For example, the PFC model exhibits density oscillations at liquid-vapor interfaces that compare favorably to data available for interfaces in metallic systems from both experiment and molecular-dynamics simulations. We also quantify the anisotropic solid-vapor surface energy for a two-dimensional PFC hexagonal crystal and find well-defined step energies from measurements on the faceted interfaces. Additionally, the strain field beneath a stepped interface is characterized and shown to qualitatively reproduce predictions from continuum models, simulations, and experimental data. Finally, we examine the dynamic case of step-flow growth of a crystal into a supersaturated vapor phase. The ability to model such a wide range of surface and bulk defects makes this PFC model a useful tool to study processing techniques such as chemical vapor deposition or vapor-liquid-solid growth of nanowires. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OSCILLATIONS KW - CRYSTALLOGRAPHY KW - RESEARCH KW - CRYSTAL growth from vapor KW - CRYSTAL defects KW - NANOWIRES N1 - Accession Number: 90547810; Schwalbach, Edwin J. 1,2; Email Address: eddie.schwalbach@gmail.com Warren, James A. 1 Kuo-An Wu 3; Email Address: kuoan@phys.nthu.edu.tw Voorhees, Peter W. 4,5; Affiliation: 1: Materials Science and Engineering Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, OH 45433, USA 3: Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China 4: Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA 5: Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, Illinois 60208, USA; Source Info: Aug2013, Vol. 88 Issue 2-B, p1; Subject Term: OSCILLATIONS; Subject Term: CRYSTALLOGRAPHY; Subject Term: RESEARCH; Subject Term: CRYSTAL growth from vapor; Subject Term: CRYSTAL defects; Subject Term: NANOWIRES; Number of Pages: 14p; Document Type: Article L3 - 10.1103/PhysRevE.88.023306 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90547810&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kwak, Jae AU - Grigsby, Claude C. AU - Preti, George AU - Rizki, Mateen M. AU - Yamazaki, Kunio AU - Beauchamp, Gary K. T1 - Changes in volatile compounds of mouse urine as it ages: Their interactions with water and urinary proteins. JO - Physiology & Behavior JF - Physiology & Behavior Y1 - 2013/08/15/ VL - 120 M3 - Article SP - 211 EP - 219 SN - 00319384 AB - Abstract: Mice release a variety of chemical signals, particularly through urine, which mediate social interactions and endocrine function. Studies have been conducted to investigate the stability of urinary chemosignals in mice. Neuroendocrine and behavioral responses of mice to urine samples of male and female conspecifics which have aged for different amounts of time have been examined, demonstrating that the quality and intensity of signaling molecules in urine change over time. In this study, we monitored changes in volatile organic compounds (VOCs) released from male and female mouse urine following aging the urine samples. Substantial amounts of some VOCs were lost during the aging process of urine, whereas other VOCs increased. Considerable portions of the VOCs which exhibited the increased release were shown to have previously been dissolved in water and subsequently released as the urine dried. We also demonstrated that some VOCs decreased slightly due to their binding with the major urinary proteins (MUPs) and identified MUP ligands whose headspace concentrations increased as the urine aged. Our results underscore the important role of MUPs and the hydration status in the release of VOCs in urine, which may largely account for the changes in the quality and intensity of urinary signals over time. [Copyright &y& Elsevier] AB - Copyright of Physiology & Behavior is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICE -- Physiology KW - URINE proteins KW - SOCIAL interaction KW - SEMIOCHEMICALS KW - ENDOCRINE glands -- Physiology KW - AGING KW - Age of mouse urine KW - Gas chromatography–mass spectrometry (GC–MS) KW - Hydration status KW - Major urinary proteins (MUPs) KW - Metabolite Differentiation and Discovery Lab (MeDDL) KW - Volatile organic compounds (VOCs) N1 - Accession Number: 90636712; Kwak, Jae 1,2; Email Address: jaekwak@hotmail.com Grigsby, Claude C. 2; Email Address: Claude.Grigsby@wpafb.af.mil Preti, George 1,3; Email Address: preti@pobox.upenn.edu Rizki, Mateen M. 4; Email Address: mateen.rizki@wright.edu Yamazaki, Kunio 1 Beauchamp, Gary K. 1; Email Address: beauchamp@monell.org; Affiliation: 1: Monell Chemical Senses Center, 3500 Market Street, Philadelphia, PA 19104, USA 2: Human Signatures Branch, Forecasting Division, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH 45433, USA 3: Department of Dermatology, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA 4: Department of Computer Science and Engineering, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH 45435, USA; Source Info: Aug2013, Vol. 120, p211; Subject Term: MICE -- Physiology; Subject Term: URINE proteins; Subject Term: SOCIAL interaction; Subject Term: SEMIOCHEMICALS; Subject Term: ENDOCRINE glands -- Physiology; Subject Term: AGING; Author-Supplied Keyword: Age of mouse urine; Author-Supplied Keyword: Gas chromatography–mass spectrometry (GC–MS); Author-Supplied Keyword: Hydration status; Author-Supplied Keyword: Major urinary proteins (MUPs); Author-Supplied Keyword: Metabolite Differentiation and Discovery Lab (MeDDL); Author-Supplied Keyword: Volatile organic compounds (VOCs); NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.physbeh.2013.08.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90636712&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Garrett, Teresa L. AU - Joshi, Kaushal AU - Rapp, Christine M. AU - Chapleau, Molly AU - Cool, David R. AU - Schlager, John J. AU - Lucot, James B. T1 - The effects of 8-OH-DPAT on neuroinflammation after sarin exposure in mice. JO - Toxicology JF - Toxicology Y1 - 2013/08/09/ VL - 310 M3 - Article SP - 22 EP - 28 SN - 0300483X AB - Highlights: [•] DPAT decreased GFAP staining while other 5-HT1A agonists did not. [•] DPAT remained effective when administered up to 2h after the toxic challenge. [•] DPAT reversed the increase in IL-1β but did not reduce positive TUNEL staining. [•] WAY-100635, a silent 5-HT1A antagonist had no effect on DPAT afforded protection. [•] The effects produced by DPAT appear to lie within its secondary pharmacology. [ABSTRACT FROM AUTHOR] AB - Copyright of Toxicology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEURONS KW - DISEASES KW - INFLAMMATION -- Animal models KW - SARIN KW - SEROTONIN antagonists KW - GLIAL fibrillary acidic protein KW - TOXICOLOGY KW - PHARMACOLOGY KW - MICE as laboratory animals KW - 5-HT1A agonist KW - Chemical warfare agent KW - Neuroinflammation KW - Organophosphate KW - Protection KW - Sarin N1 - Accession Number: 89510803; Garrett, Teresa L. 1 Joshi, Kaushal 1 Rapp, Christine M. 1 Chapleau, Molly 1 Cool, David R. 1 Schlager, John J. 2 Lucot, James B. 1; Email Address: james.lucot@wright.edu; Affiliation: 1: Pharmacology & Toxicology, Boonshoft School of Medicine, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH 45435, USA 2: Molecular Bioeffects Branch, Bioeffects Division, Human Effectiveness Directorate, 711th Human Performance Wing, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: Aug2013, Vol. 310, p22; Subject Term: NEURONS; Subject Term: DISEASES; Subject Term: INFLAMMATION -- Animal models; Subject Term: SARIN; Subject Term: SEROTONIN antagonists; Subject Term: GLIAL fibrillary acidic protein; Subject Term: TOXICOLOGY; Subject Term: PHARMACOLOGY; Subject Term: MICE as laboratory animals; Author-Supplied Keyword: 5-HT1A agonist; Author-Supplied Keyword: Chemical warfare agent; Author-Supplied Keyword: Neuroinflammation; Author-Supplied Keyword: Organophosphate; Author-Supplied Keyword: Protection; Author-Supplied Keyword: Sarin; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.tox.2013.05.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89510803&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Emery, Samuel B. AU - Rider, Keith B. AU - Little, Brian K. AU - Schrand, Amanda M. AU - Lindsay, C. Michael T1 - Magnesium cluster film synthesis by helium nanodroplets. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2013/08/07/ VL - 139 IS - 5 M3 - Article SP - 054307 PB - American Institute of Physics SN - 00219606 AB - Atomic and molecular clusters are a unique class of substances with properties that differ greatly from those of the bulk or single atoms due to changes in surface to volume ratio and finite size effects. Here, we demonstrate the ability to create cluster matter films using helium droplet mediated cluster assembly and deposition, a recently developed methodology that condenses atoms or molecules within liquid helium droplets and then gently deposits them onto a surface. In this work, we examine magnesium nanocluster films, which exhibit growth behavior comparable to low-energy cluster beam methods, and demonstrate physical properties and morphology dependent on helium droplet size. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNESIUM KW - METAL clusters KW - LIQUID helium KW - DROPS KW - NANOSTRUCTURES KW - METALLIC films KW - DOPING agents (Chemistry) KW - DEFORMATIONS (Mechanics) N1 - Accession Number: 89595754; Emery, Samuel B. 1 Rider, Keith B. 1 Little, Brian K. 1 Schrand, Amanda M. 1 Lindsay, C. Michael 1; Affiliation: 1: AFRL/RWMES, Air Force Research Laboratory, 2306 Perimeter Road, Eglin AFB, Florida 32542,; Source Info: Aug2013, Vol. 139 Issue 5, p054307; Subject Term: MAGNESIUM; Subject Term: METAL clusters; Subject Term: LIQUID helium; Subject Term: DROPS; Subject Term: NANOSTRUCTURES; Subject Term: METALLIC films; Subject Term: DOPING agents (Chemistry); Subject Term: DEFORMATIONS (Mechanics); Number of Pages: 6p; Illustrations: 1 Black and White Photograph, 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1063/1.4817326 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89595754&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mahalingam, Krishnamurthy AU - Steenbergen, Elizabeth H. AU - Brown, Gail J. AU - Zhang, Yong-Hang T1 - Quantitative analysis of strain distribution in InAs/InAs1-xSbx superlattices. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/08/05/ VL - 103 IS - 6 M3 - Article SP - 061908 PB - American Institute of Physics SN - 00036951 AB - Atomic resolution transmission electron microscopy is performed to examine the strain distribution in an InAs/InAs1-xSbx superlattice grown on a (100)-GaSb substrate. The strain profiles reveal that the thickness of tensile regions in the superlattice is significantly lower than expected, with a corresponding increase in thickness of the compressive regions. Furthermore, significant grading is observed within the tensile regions of the strain profile, indicating Sb intermixing from the InAsSb growth surface. The results signify an effective reduction in the InAs layer thickness due to the anion (As-Sb) exchange process at the InAs-on-InAsSb interface. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTITATIVE chemical analysis KW - SUPERLATTICES KW - TRANSMISSION electron microscopy KW - ARSENIDES KW - X-ray diffraction N1 - Accession Number: 89656893; Mahalingam, Krishnamurthy 1 Steenbergen, Elizabeth H. 1 Brown, Gail J. 1 Zhang, Yong-Hang 2; Affiliation: 1: AFRL/RXAN, Materials and Manufacturing Directorate Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7707, 2: School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287,; Source Info: 8/5/2013, Vol. 103 Issue 6, p061908; Subject Term: QUANTITATIVE chemical analysis; Subject Term: SUPERLATTICES; Subject Term: TRANSMISSION electron microscopy; Subject Term: ARSENIDES; Subject Term: X-ray diffraction; Number of Pages: 4p; Illustrations: 1 Black and White Photograph, 4 Graphs; Document Type: Article L3 - 10.1063/1.4817969 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89656893&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kwon, J. AU - Brandes, M.C. AU - Sudharshan Phani, P. AU - Pilchak, A.P. AU - Gao, Y.F. AU - George, E.P. AU - Pharr, G.M. AU - Mills, M.J. T1 - Characterization of deformation anisotropies in an α-Ti alloy by nanoindentation and electron microscopy. JO - Acta Materialia JF - Acta Materialia Y1 - 2013/08// VL - 61 IS - 13 M3 - Article SP - 4743 EP - 4756 SN - 13596454 AB - Abstract: The crystallographic dependence of the mechanical responses of an α-Ti–7wt.% Al alloy was measured by nanoindentation using spherical and Berkovich indenters. Both elastic moduli and hardness responses of indents on the (0001), and planes were quantified. The dislocation structures resulting from indentation were characterized by electron microscopy. While scanning electron microscopy techniques were used for the observation of surface slip structures, site-specific focused-ion-beam thin foil preparation and scanning transmission electron microscopy techniques were employed for the imaging of sub-surface dislocation structures. Elastic modulus, hardness and load at pop-in were found to vary with crystallographic orientation. Indentation-induced plasticity was found to occur by multiple slip/twin mechanisms and to be dependent on crystal orientation, although 〈a〉 slip on (0001) planes was found to be common to all orientations. The observed dislocation structures are rationalized on the basis of theoretical predictions based on the anisotropic elastic contact analysis and resolved shear stress calculations. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - DEFORMATIONS (Mechanics) KW - ANISOTROPY KW - NANOINDENTATION KW - ELECTRON microscopy KW - CRYSTALLOGRAPHY KW - Dislocation structures KW - Nanoindentation KW - Ti alloy KW - Transmission electron microscopy analysis N1 - Accession Number: 89135157; Kwon, J. 1; Email Address: id1214@gmail.com Brandes, M.C. 1 Sudharshan Phani, P. 2 Pilchak, A.P. 3 Gao, Y.F. 2,4 George, E.P. 2,4 Pharr, G.M. 2,4 Mills, M.J. 1; Affiliation: 1: Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43221, USA 2: Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN 37996, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLM, Wright Patterson Air Force Base, OH 45433, USA 4: Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA; Source Info: Aug2013, Vol. 61 Issue 13, p4743; Subject Term: TITANIUM alloys; Subject Term: DEFORMATIONS (Mechanics); Subject Term: ANISOTROPY; Subject Term: NANOINDENTATION; Subject Term: ELECTRON microscopy; Subject Term: CRYSTALLOGRAPHY; Author-Supplied Keyword: Dislocation structures; Author-Supplied Keyword: Nanoindentation; Author-Supplied Keyword: Ti alloy; Author-Supplied Keyword: Transmission electron microscopy analysis; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.actamat.2013.05.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89135157&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Han, Changseok AU - Doepke, Amos AU - Cho, Wondong AU - Likodimos, Vlassis AU - de la Cruz, Armah A. AU - Back, Tyson AU - Heineman, William R. AU - Halsall, H. Brian AU - Shanov, Vesselin N. AU - Schulz, Mark J. AU - Falaras, Polycarpos AU - Dionysiou, Dionysios D. T1 - A Multiwalled-Carbon-Nanotube-Based Biosensor for Monitoring Microcystin-LR in Sources of Drinking Water Supplies. JO - Advanced Functional Materials JF - Advanced Functional Materials Y1 - 2013/08// VL - 23 IS - 14 M3 - Article SP - 1807 EP - 1816 SN - 1616301X AB - A multiwalled carbon nanotube (MWCNT)-based electrochemical biosensor is developed for monitoring microcystin-LR (MC-LR), a toxic cyanobacterial toxin, in sources of drinking water supplies. The biosensor electrodes are fabricated using vertically well-aligned, dense, millimeter-long MWCNT arrays with a narrow size distribution, grown on patterned Si substrates by water-assisted chemical vapor deposition. High temperature thermal treatment (2500 °C) in an Ar atmosphere is used to enhance the crystallinity of the pristine materials, followed by electrochemical functionalization in alkaline solution to produce oxygen-containing functional groups on the MWCNT surface, thus providing the anchoring sites for linking molecules that allow the immobilization of MC-LR onto the MWCNT array electrodes. Addition of the monoclonal antibodies specific to MC-LR in the incubation solutions offers the required sensor specificity for toxin detection. The performance of the MWCNT array biosensor is evaluated using micro-Raman spectroscopy, including polarized Raman measurements, X-ray photoelectron spectroscopy, cyclic voltammetry, optical microscopy, and Faradaic electrochemical impedance spectroscopy. A linear dependence of the electron-transfer resistance on the MC-LR concentration is observed in the range of 0.05 to 20 μg L−1, which enables cyanotoxin monitoring well below the World Health Organization (WHO) provisional concentration limit of 1 μg L−1 for MC-LR in drinking water. [ABSTRACT FROM AUTHOR] AB - Copyright of Advanced Functional Materials is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - biosensors KW - carbon nanotubes KW - cyanotoxins KW - drinking water KW - microcystin-LR N1 - Accession Number: 86659755; Han, Changseok 1 Doepke, Amos 2 Cho, Wondong 3 Likodimos, Vlassis 4 de la Cruz, Armah A. 5 Back, Tyson 6,7 Heineman, William R. 2 Halsall, H. Brian 2 Shanov, Vesselin N. 3 Schulz, Mark J. 8 Falaras, Polycarpos 4 Dionysiou, Dionysios D. 1,9; Affiliation: 1: Environmental Engineering and Science Program, School of Energy, Environmental, Biological and Medical Engineering, University of Cincinnati, Cincinnati, OH 45221-0012, USA 2: Department of Chemistry, University of Cincinnati, Cincinnati, OH 45221-0172, USA 3: Chemical Engineering, School of Energy, Environmental, Biological and Medical Engineering, University of Cincinnati, Cincinnati, OH 45221-0012, USA 4: Institute of Advanced Materials, Physicochemical Processes, Nanotechnology and Microsystems (IAMPPNM), Division of Physical Chemistry, NCSR Demokritos, 15310 Aghia Paraskevi Attikis, Athens, Greece 5: US EPA, Office of Research and Development, National Exposure Research Laboratory, Cincinnati, OH 45268, USA 6: Air Force Research Laboratory, Materials and Manufacturing Directorate, Electronic and Optical Materials Branch (AFRL/RXPS), Wright-Patterson AFB, OH 45433-7077, USA 7: Universal Technology Corporation, 1270 N. Fairfield Rd, Dayton, OH 45432, USA 8: Mechanical Engineering and Mechanical Engineering Technology, School of Dynamic System, University of Cincinnati, Cincinnati, OH 45221-0072, USA 9: Nireas-International Water Research Centre, University of Cyprus, 20537 Nicosia, Cyprus; Source Info: Aug2013, Vol. 23 Issue 14, p1807; Author-Supplied Keyword: biosensors; Author-Supplied Keyword: carbon nanotubes; Author-Supplied Keyword: cyanotoxins; Author-Supplied Keyword: drinking water; Author-Supplied Keyword: microcystin-LR; Number of Pages: 10p; Document Type: Article L3 - 10.1002/adfm.201201920 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86659755&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bisek, Nicholas J. AU - Rizzetta, Donald E. AU - Poggie, Jonathan T1 - Plasma Control of a Turbulent Shock Boundary-Layer Interaction. JO - AIAA Journal JF - AIAA Journal Y1 - 2013/08// VL - 51 IS - 8 M3 - Article SP - 1789 EP - 1804 SN - 00011452 AB - The Navier-Stokes equations were solved using a high-fidelity time-implicit numerical scheme and an implicit large-eddy simulation approach to investigate plasma-based flow control for supersonic flow over a compression ramp. The configuration included a flat-plate region to develop an equilibrium turbulent boundary layer at Mach 2.25, which was validated against a set of experimental measurements. The fully turbulent boundary-layer flow traveled over a 24 deg ramp and produced an unsteady shock-induced separation. A control strategy to suppress the separation through a magnetically-driven surface-discharge actuator was explored. The size, strength, and placement of the model actuator were based on recent experiments at the Princeton University Applied Physics Group. Three control scenarios were examined: steady control, pulsing with a 50% duty cycle, and a case with significant Joule heating. The control mechanism was very effective at reducing the time-mean separation length for all three cases. The steady control case was the most effective, with a reduction in the separation length of more than 75 %. The controller was also found to significantly reduce the low-frequency content of the turbulent kinetic energy spectra within the separated region and reduce the total turbulent kinetic energy downstream of reattachment. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NAVIER-Stokes equations KW - RESEARCH KW - EDDY currents (Electric) KW - FLUID dynamics KW - ELECTRIC actuators KW - SUPERSONIC aerodynamics N1 - Accession Number: 89634588; Bisek, Nicholas J. 1,2,3 Rizzetta, Donald E. 1,4,5 Poggie, Jonathan 1,5,6; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, 45433-7512 Ohio 2: Research Aerospace Engineer, RQAC 3: AIAA 4: Senior Research Aerospace Engineer, RQAC 5: Associate Fellow, AIAA 6: Team Lead, High-Speed Flow Research Group, RQAC; Source Info: Aug2013, Vol. 51 Issue 8, p1789; Subject Term: NAVIER-Stokes equations; Subject Term: RESEARCH; Subject Term: EDDY currents (Electric); Subject Term: FLUID dynamics; Subject Term: ELECTRIC actuators; Subject Term: SUPERSONIC aerodynamics; Number of Pages: 16p; Document Type: Article L3 - 10.2514/1.J052248 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89634588&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mullenix, Nathan J. AU - Gaitonde, Datta V. AU - Visbal, Miguel R. T1 - Spatially Developing Supersonic Turbulent Boundary Layer with a Body-Force-Based Method. JO - AIAA Journal JF - AIAA Journal Y1 - 2013/08// VL - 51 IS - 8 M3 - Article SP - 1805 EP - 1819 SN - 00011452 AB - A method to obtain a spatially developing equilibrium supersonic turbulent flat-plate boundary layer suitable for direct numerical simulations or large-eddy simulations of viscous/inviscid interactions is described. A steady counterflow actuator with properties based on a dielectric barrier discharge is employed to trip an incoming laminar boundary layer. The resulting unstable shear layer transitions rapidly and breaks down to generate the desired turbulent boundary layer. A fifth-order bandwidth and order optimized weighted essentially nonoscillatory scheme using Roe fluxes is used along with sixth-order viscous terms to simulate this process. The properties of the boundary layer are exhaustively analyzed on meshes of 65, 37, and 20 million grid points. The fine-grid solution agrees with the mean flow and statistical properties observed in the literature, and is used as a truth model to investigate results on smaller meshes. The medium-grid solution reproduces the fine-grid behavior with modest differences in some quantities. The coarse-grid solution shows delayed transition and reproduces some flow quantities with significant discrepancies in others. Anticipated coherent structures are observed to exist on all grids. An examination of the length scale and timescale of the turbulence shows no signature of the tripping mechanism. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERSONIC aerodynamics KW - RESEARCH KW - BOUNDARY layer (Aerodynamics) KW - TURBULENT boundary layer KW - FLUID dynamics KW - COMPUTER simulation N1 - Accession Number: 89634589; Mullenix, Nathan J. 1,2 Gaitonde, Datta V. 1,3 Visbal, Miguel R. 3,4; Affiliation: 1: Ohio State University, Columbus, Ohio 43210 2: AIAA 3: Fellow, AIAA 4: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Aug2013, Vol. 51 Issue 8, p1805; Subject Term: SUPERSONIC aerodynamics; Subject Term: RESEARCH; Subject Term: BOUNDARY layer (Aerodynamics); Subject Term: TURBULENT boundary layer; Subject Term: FLUID dynamics; Subject Term: COMPUTER simulation; Number of Pages: 15p; Document Type: Article L3 - 10.2514/1.J051861 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89634589&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - SolKeun Jee AU - Lopez Mejia, Omar D. AU - Moser, Robert D. AU - Muse, Jonathan A. AU - Kutay, Ali T. AU - Calise, Anthony J. T1 - Simulation of Rapidly Maneuvering Airfoils with Synthetic Jet Actuators. JO - AIAA Journal JF - AIAA Journal Y1 - 2013/08// VL - 51 IS - 8 M3 - Article SP - 1883 EP - 1897 SN - 00011452 AB - Synthetic jet actuators are investigated for rapidly maneuvering airfoils that are regulated by a closed-loop control system. To support active flow-control simulations performed here, the closed-loop system and vehicle dynamics are coupled with computational fluid dynamics. High-frequency sinusoidal pitching simulations with and without synthetic jet actuation indicate that the current synthetic jet actuators provide bidirectional change in aerodynamic forces during rapid maneuvers whose time scales are of the same order as the flow time scales. Responses of a wind-tunnel airfoil are well represented in the current simulations, which allows us to predict the response of the system for dynamic conditions representative of free flight. The control system is able to execute rapid free-flight maneuvers. It is observed that the controller is responding to small fluctuations caused by vortex shedding from the trailing-edge actuators. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC actuators KW - RESEARCH KW - SIMULATION methods & models KW - COMPUTATIONAL fluid dynamics KW - FLUID dynamics KW - ELECTRONIC controllers N1 - Accession Number: 89634595; SolKeun Jee 1 Lopez Mejia, Omar D. 2 Moser, Robert D. 3 Muse, Jonathan A. 4 Kutay, Ali T. 5 Calise, Anthony J. 6; Affiliation: 1: NASA Ames Research Center, Moffett Field, California 94035 2: University of the Andes, Bogota CO0001, Colombia 3: University of Texas, Austin, Austin, Texas 78712 4: U.S. Air Force Research Laboratory, Dayton, Ohio 45433 5: Middle East Technical University, Ankara 06531, Turkey 6: Georgia Institute of Technology, Atlanta, Georgia 30332; Source Info: Aug2013, Vol. 51 Issue 8, p1883; Subject Term: ELECTRIC actuators; Subject Term: RESEARCH; Subject Term: SIMULATION methods & models; Subject Term: COMPUTATIONAL fluid dynamics; Subject Term: FLUID dynamics; Subject Term: ELECTRONIC controllers; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; Number of Pages: 15p; Document Type: Article L3 - 10.2514/1.J052080 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89634595&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nagraj, Nandini AU - Slocik, Joseph M. AU - Phillips, David M. AU - Kelley-Loughnane, Nancy AU - Naik, Rajesh R. AU - Potyrailo, Radislav A. T1 - Selective sensing of vapors of similar dielectric constants using peptide-capped gold nanoparticles on individual multivariable transducers. JO - Analyst JF - Analyst Y1 - 2013/08// VL - 138 IS - 15 M3 - Article SP - 4334 EP - 4339 SN - 00032654 AB - Peptide-capped AYSSGAPPMPPF gold nanoparticles were demonstrated for highly selective chemical vapor sensing using individual multivariable inductor–capacitor–resistor (LCR) resonators. Their multivariable response was achieved by measuring their resonance impedance spectra followed by multivariate spectral analysis. Detection of model toxic vapors and chemical agent simulants, such as acetonitrile, dichloromethane and methyl salicylate, was performed. Dichloromethane (dielectric constant εr = 9.1) and methyl salicylate (εr = 9.0) were discriminated using a single sensor. These sensing materials coupled to multivariable transducers can provide numerous opportunities for tailoring the vapor response selectivity based on the diversity of the amino acid composition of the peptides, and by the modulation of the nature of peptide–nanoparticle interactions through designed combinations of hydrophobic and hydrophilic amino acids. [ABSTRACT FROM AUTHOR] AB - Copyright of Analyst is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GOLD nanoparticles KW - PERMITTIVITY KW - TRANSDUCERS KW - CHEMICAL vapor deposition KW - RESONATORS KW - IMPEDANCE spectroscopy KW - MULTIVARIATE analysis N1 - Accession Number: 100866388; Nagraj, Nandini 1 Slocik, Joseph M. 2 Phillips, David M. 2 Kelley-Loughnane, Nancy 3 Naik, Rajesh R. 2 Potyrailo, Radislav A. 1; Affiliation: 1: Chemistry and Chemical Engineering Global Technology Domain, General Electric Global Research Center, Niskayuna, NY, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 3: Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: 2013, Vol. 138 Issue 15, p4334; Subject Term: GOLD nanoparticles; Subject Term: PERMITTIVITY; Subject Term: TRANSDUCERS; Subject Term: CHEMICAL vapor deposition; Subject Term: RESONATORS; Subject Term: IMPEDANCE spectroscopy; Subject Term: MULTIVARIATE analysis; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1039/c3an00088e UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100866388&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Potyrailo, Radislav AU - Naik, Rajesh R. T1 - Bionanomaterials and Bioinspired Nanostructures for Selective Vapor Sensing. JO - Annual Review of Materials Research JF - Annual Review of Materials Research Y1 - 2013/08// VL - 43 IS - 1 M3 - Article SP - 307 EP - 334 SN - 15317331 AB - At present, monitoring of air at the workplace, in urban environments, and on battlefields; exhaled air from medical patients; air in packaged food containers; and so forth can be accomplished with different types of analytical instruments. Vapor sensors have their niche in these measurements when an unobtrusive, low-power, and cost-sensitive technical solution is required. Unfortunately, existing vapor sensors often degrade their vapor-quantitation accuracy in the presence of high levels of interferences and cannot quantitate several components in complex gas mixtures. Thus, new sensing approaches with improved sensor selectivity are required. This technological task can be accomplished by the careful design of sensing materials with new performance properties and by coupling these materials with the suitable physical transducers. This review is focused on the assessment of the capabilities of bionanomaterials and bioinspired nanostructures for selective vapor sensing. We demonstrate that these sensing materials can operate with diverse transducers based on electrical, mechanical, and optical readout principles and can provide vapor-response selectivity previously unattainable by using other sensing materials. This ability for selective vapor sensing provides opportunities to significantly impact the major directions in development and application scenarios of vapor sensors. [ABSTRACT FROM AUTHOR] AB - Copyright of Annual Review of Materials Research is the property of Annual Reviews Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURED materials KW - MATERIALS science KW - NANOSTRUCTURES KW - GAS mixtures KW - WORK environment KW - battery-independent sensor operation KW - bioinspired nanostructures KW - bionanomaterials KW - distributed sensor networks KW - multivariable individual sensors KW - unobtrusive sensors KW - vapor sensors KW - wireless sensing N1 - Accession Number: 88907071; Potyrailo, Radislav 1 Naik, Rajesh R. 2; Affiliation: 1: Chemistry and Chemical Engineering, General Electric Global Research Center, Niskayuna, New York 12309; email: 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: 2013, Vol. 43 Issue 1, p307; Subject Term: NANOSTRUCTURED materials; Subject Term: MATERIALS science; Subject Term: NANOSTRUCTURES; Subject Term: GAS mixtures; Subject Term: WORK environment; Author-Supplied Keyword: battery-independent sensor operation; Author-Supplied Keyword: bioinspired nanostructures; Author-Supplied Keyword: bionanomaterials; Author-Supplied Keyword: distributed sensor networks; Author-Supplied Keyword: multivariable individual sensors; Author-Supplied Keyword: unobtrusive sensors; Author-Supplied Keyword: vapor sensors; Author-Supplied Keyword: wireless sensing; Number of Pages: 26p; Document Type: Article L3 - 10.1146/annurev-matsci-071312-121710 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88907071&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shaw, Tyler H. AU - Funke, Matthew E. AU - Dillard, Michael AU - Funke, Gregory J. AU - Warm, Joel S. AU - Parasuraman, Raja T1 - Event-related cerebral hemodynamics reveal target-specific resource allocation for both “go” and “no-go” response-based vigilance tasks. JO - Brain & Cognition JF - Brain & Cognition Y1 - 2013/08// VL - 82 IS - 3 M3 - Article SP - 265 EP - 273 SN - 02782626 AB - Highlights: [•] Event-related cerebral hemovelocity is only modulated by critical event detection. [•] Cerebral hemovelocity changes similarly in “go” and “no-go” formatted tasks. [•] The magnitude of event-related cerebral hemovelocity is reduced with time-on-task. [ABSTRACT FROM AUTHOR] AB - Copyright of Brain & Cognition is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEMODYNAMICS KW - VIGILANCE (Psychology) KW - EVOKED potentials (Electrophysiology) KW - NEUROBIOLOGY KW - NEUROSCIENCES KW - Attentional resource theory KW - Cerebral blood flow velocity KW - Event-related KW - Sustained attention KW - Vigilance N1 - Accession Number: 89343401; Shaw, Tyler H. 1; Email Address: tshaw4@gmu.edu Funke, Matthew E. 2 Dillard, Michael 3 Funke, Gregory J. 4 Warm, Joel S. 4,5 Parasuraman, Raja 1; Affiliation: 1: Center of Excellence in Neuroergonomics, Technology, and Cognition (CENTEC), George Mason University, Department of Psychology, 4400 University Drive, Fairfax, VA, United States 2: Naval Medical Research Unit – Dayton, Wright Patterson Air Force Base, OH, United States 3: National Research Council, Washington, DC, United States 4: Air Force Research Laboratory WPAFB, 711th Human Performance Wing, Wright Patterson Air Force Base, OH, United States 5: University of Dayton Research Institute, Dayton, OH, United States; Source Info: Aug2013, Vol. 82 Issue 3, p265; Subject Term: HEMODYNAMICS; Subject Term: VIGILANCE (Psychology); Subject Term: EVOKED potentials (Electrophysiology); Subject Term: NEUROBIOLOGY; Subject Term: NEUROSCIENCES; Author-Supplied Keyword: Attentional resource theory; Author-Supplied Keyword: Cerebral blood flow velocity; Author-Supplied Keyword: Event-related; Author-Supplied Keyword: Sustained attention; Author-Supplied Keyword: Vigilance; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.bandc.2013.05.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89343401&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kulkarni, Sourabh U. AU - Hoffman, Wesley P. AU - Thies, Mark C. T1 - The molecular structures comprising catalytically polymerized pyrene pitch. JO - Carbon JF - Carbon Y1 - 2013/08// VL - 59 M3 - Article SP - 33 EP - 39 SN - 00086223 AB - Abstract: Key molecular species present in a model pyrene pitch catalytically polymerized (using AlCl3) from pure pyrene have been unambiguously identified. Packed-column, dense-gas extraction, using supercritical toluene as the solvent, was used to fractionate the pitch into monomer- and dimer-rich cuts. The resultant fractions were then analyzed for molecular-structure information via matrix-assisted, laser desorption/ionization (MALDI) mass spectrometry and by high performance liquid chromatography (HPLC) with UV–vis detection. Results indicate that only one of the possible isomers of pyrene dimer, that is, 1.14,7.8-dibenzoperopyrene, is present. In addition, mono-, di-, and tri-methylated pyrenes, which are completely absent in the starting pyrene, are present in the pyrene pitch in small but nontrivial (i.e., several per cent) quantities. Furthermore, the purity of the starting pyrene has no discernable impact on the relative amounts of alkylated pyrene species that are produced. A portion of the pyrene dimers, trimers, and tetramers are similarly alkylated. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR structure KW - CATALYTIC activity KW - POLYMERIZATION KW - PYRENE (Chemical) KW - HIGH performance liquid chromatography KW - METHYLATION N1 - Accession Number: 89262204; Kulkarni, Sourabh U. 1 Hoffman, Wesley P. 2 Thies, Mark C. 1; Email Address: mcths@clemson.edu; Affiliation: 1: Department of Chemical and Biomolecular Engineering, Center for Advanced Engineering Fibers and Films, Clemson University, Clemson, SC 29634-0909, USA 2: Air Force Research Laboratory, AFRL/RQRC, 10 E. Saturn Blvd. Edwards, CA 93524-7680, USA; Source Info: Aug2013, Vol. 59, p33; Subject Term: MOLECULAR structure; Subject Term: CATALYTIC activity; Subject Term: POLYMERIZATION; Subject Term: PYRENE (Chemical); Subject Term: HIGH performance liquid chromatography; Subject Term: METHYLATION; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.carbon.2013.02.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89262204&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alway-Cooper, Rebecca M. AU - Anderson, David P. AU - Ogale, Amod A. T1 - Carbon black modification of mesophase pitch-based carbon fibers. JO - Carbon JF - Carbon Y1 - 2013/08// VL - 59 M3 - Article SP - 40 EP - 48 SN - 00086223 AB - Abstract: The effects of carbon black (CB) on the microstructural development within mesophase pitch-based carbon fibers are reported. Unlike carbon nanotubes, which were previously studied for modifying fiber microstructure, CB represents a significantly lower cost alternative making it more favorable for industrial application. Additionally, the aspect ratio of CB is much closer to unity than carbon nanotubes, which have an aspect ratio ∼100 to 1000. Fibers were produced by first dispersing CB into a synthetic mesophase pitch at a dilute concentration of 0.3wt%. These precursor materials were spun and then processed into carbon fibers. Unmodified (0wt%) carbon fibers exhibited a severe radial texture with increasing orientation of graphitic pleats away from the fiber core. Carbon fibers modified with CB showed a strong flat layer structure, with only a slight increase in pleat folding away from the core. This difference in structure was also accompanied by a decrease in the number of fibers that exhibited “pac-man” splitting. No discernable reduction was observed in the graphitic crystallinity (interplanar spacing and crystallite size) or axial orientation of crystallites within the fiber, as a result of nanomodification. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON-black KW - MESOPHASES KW - CARBON fibers KW - CRYSTAL texture KW - CARBON nanotubes KW - MICROSTRUCTURE N1 - Accession Number: 89262205; Alway-Cooper, Rebecca M. 1 Anderson, David P. 2,3 Ogale, Amod A. 1; Email Address: ogale@clemson.edu; Affiliation: 1: Chemical Engineering Department and Center for Advanced Engineering Fibers and Films, Clemson University, 127 Earle Hall, Clemson, SC 29634, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, AFRL/RX, Wright-Patterson Air Force Base, OH 45433, United States 3: University of Dayton Research Institute, Dayton, OH, United States; Source Info: Aug2013, Vol. 59, p40; Subject Term: CARBON-black; Subject Term: MESOPHASES; Subject Term: CARBON fibers; Subject Term: CRYSTAL texture; Subject Term: CARBON nanotubes; Subject Term: MICROSTRUCTURE; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.carbon.2013.02.048 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89262205&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ganguli, Sabyasachi AU - Reed, Amber AU - Jayasinghe, Chaminda AU - Sprengard, Joe AU - Roy, Ajit K. AU - Voevodin, Andrey A. AU - Muratore, Chris T1 - A simultaneous increase in the thermal and electrical transport in carbon nanotube yarns induced by inter-tube metallic welding. JO - Carbon JF - Carbon Y1 - 2013/08// VL - 59 M3 - Article SP - 479 EP - 486 SN - 00086223 AB - Vertically aligned arrays of multiwall carbon nanotubes (MWCNT) were decorated with gold (Au) nanoparticles of different diameter and areal densities and spun into yarns. The melting point of Au nanoparticles determined by differential scanning calorimetry was approximately 260°C, well below the oxidation temperature of carbon. A continuous yarn was formed while pulling out a bundle of CNTs from the metalized CNT array. Relatively low temperature (300°C) thermal processing of the metalized yarn resulted in a 30% improvement in thermal conductivity, 40% increase in electrical conductivity and a 4× increase in elastic modulus. Cross-sections of the yarn were examined with transmission electron microscopy to characterize the physical nature of the metal–nanotube interface. The deposition procedure described to decorate the nanotube yarns is easily scalable to larger CNT arrays or other configurations for commercial applications, such as medical implants, lightweight conductors, smart uniforms for the soldiers, and conformal electronics in aerospace industry. [ABSTRACT FROM AUTHOR] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - THERMAL analysis KW - METALLIC composites KW - WELDING KW - THERMAL conductivity KW - DIFFERENTIAL scanning calorimetry N1 - Accession Number: 89262251; Ganguli, Sabyasachi 1,2; Email Address: sabyasachi.ganguli@wpafb.af.mil Reed, Amber 1 Jayasinghe, Chaminda 3 Sprengard, Joe 3 Roy, Ajit K. 1 Voevodin, Andrey A. 1 Muratore, Chris 1,4; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Nanoelectronic Materials Branch, 2941 Hobson Way, Wright–Patterson Air Force Base, OH 45433, United States 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, United States 3: General Nano LLC, 1776 Mentor Ave, Suite 170, Cincinnati, OH 45212, United States 4: Department of Chemical and Materials Engineering, University of Dayton, Dayton, OH 45469-0240, United States; Source Info: Aug2013, Vol. 59, p479; Subject Term: CARBON nanotubes; Subject Term: THERMAL analysis; Subject Term: METALLIC composites; Subject Term: WELDING; Subject Term: THERMAL conductivity; Subject Term: DIFFERENTIAL scanning calorimetry; NAICS/Industry Codes: 238190 Other Foundation, Structure, and Building Exterior Contractors; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.carbon.2013.03.042 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89262251&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shanmugam, Venkateswaran AU - Penmetsa, Ravi AU - Tuegel, Eric AU - Clay, Stephen T1 - Stochastic modeling of delamination growth in unidirectional composite DCB specimens using cohesive zone models. JO - Composite Structures JF - Composite Structures Y1 - 2013/08// VL - 102 M3 - Article SP - 38 EP - 60 SN - 02638223 AB - Abstract: Delamination between plies is the most common failure mode in composite laminates that can cause fiber breakage and reduction in life of the composite. Currently Mode-I interlaminar fracture toughness or critical energy release rate of a composite is measured using double cantilever beam (DCB) with unidirectional composites (ASTM D5528). Unlike metals, the energy plot of a DCB specimen shows increase in energy release rate with increase in crack length. Also during testing the steady state energy release rate from each of the samples of the same batch shows a lot of variation due to fiber cross-over bridging that occurs only in unidirectional composites. In this study, a probabilistic Cohesive Zone Model (CZM) is developed to capture steady state energy release rate variations of 51mm crack size DCB specimens based on unidirectional composite (IM7/977-3) test data. Then using the probabilistic CZM, the energy release rate variations of 76.2mm crack size DCB model are predicted and compared to the test results. The predictions showed good agreement with the experiments suggesting a probabilistic CZM is capable of simulating the delamination process in unidirectional composites. [Copyright &y& Elsevier] AB - Copyright of Composite Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GIRDERS KW - COMPOSITE materials -- Delamination KW - STOCHASTIC processes KW - FRACTURE mechanics KW - COHESIVE strength (Mechanics) KW - MATERIALS -- Mechanical properties KW - Bridging law KW - Cohesive zone model KW - FEA KW - Optimization KW - Response surface N1 - Accession Number: 89217550; Shanmugam, Venkateswaran 1; Email Address: venkat.shanmugam5@gmail.com Penmetsa, Ravi 2; Email Address: ravi.penmetsa@wpafb.af.mil Tuegel, Eric 2; Email Address: eric.tuegel@wpafb.af.mil Clay, Stephen 2; Email Address: stephen.clay@wpafb.af.mil; Affiliation: 1: Department of Mechanical and Materials Engineering, Wright State University, OH 45435, USA 2: Air Force Research Laboratory, Air Vehicles Directorate (RBSM), WPAFB, OH 45433, USA; Source Info: Aug2013, Vol. 102, p38; Subject Term: GIRDERS; Subject Term: COMPOSITE materials -- Delamination; Subject Term: STOCHASTIC processes; Subject Term: FRACTURE mechanics; Subject Term: COHESIVE strength (Mechanics); Subject Term: MATERIALS -- Mechanical properties; Author-Supplied Keyword: Bridging law; Author-Supplied Keyword: Cohesive zone model; Author-Supplied Keyword: FEA; Author-Supplied Keyword: Optimization; Author-Supplied Keyword: Response surface; Number of Pages: 23p; Document Type: Article L3 - 10.1016/j.compstruct.2013.01.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89217550&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buzawa, Eve S. AU - Buzawa, Aaron D. T1 - Evidence-Based Prosecution. JO - Criminology & Public Policy JF - Criminology & Public Policy Y1 - 2013/08// VL - 12 IS - 3 M3 - Article SP - 491 EP - 505 SN - 15386473 AB - This essay discusses an article on the difference in outcomes between a victim-oriented approach to prosecuting domestic violence and an evidence-based prosecution policy. It is suggested that the data presented provide important policy support to the use of a victim-centered approach to prosecution. The article also tackles prosecutorial trends and the limitations of a victim-oriented approach. KW - VICTIMS of family violence KW - PROSECUTION KW - CRIMINAL procedure KW - RECIDIVISTS KW - RECIDIVISM N1 - Accession Number: 93257246; Buzawa, Eve S. 1 Buzawa, Aaron D. 2; Affiliation: 1: University of Massachusetts-Lowell 2: United States Air Force; Source Info: Aug2013, Vol. 12 Issue 3, p491; Subject Term: VICTIMS of family violence; Subject Term: PROSECUTION; Subject Term: CRIMINAL procedure; Subject Term: RECIDIVISTS; Subject Term: RECIDIVISM; NAICS/Industry Codes: 922130 Legal Counsel and Prosecution; Number of Pages: 15p; Document Type: Article L3 - 10.1111/1745-9133.12056 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=93257246&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanford, Bret AU - Beran, Philip T1 - Minimum-mass panels under probabilistic aeroelastic flutter constraints. JO - Finite Elements in Analysis & Design JF - Finite Elements in Analysis & Design Y1 - 2013/08// VL - 70-71 M3 - Article SP - 15 EP - 26 SN - 0168874X AB - Abstract: Aeroelastic flutter is a dangerous failure mode, and aircraft structural components are designed under a deterministic flutter margin. Meeting this safety factor may result in overly-conservative structures, however, an alternative approach incorporates uncertainties into the computational models, and imposes a maximum allowable flutter probability during the optimization process. This technique is demonstrated for the variable-thickness design of an elastic panel subjected to supersonic flow. A performance measure approach based on the first-order reliability method incorporates probabilistic flutter constraints during the search for a minimum-mass panel. Optimization results are given for uncertainties in the panel's boundary conditions, and for non-deterministic thickness design variables. [Copyright &y& Elsevier] AB - Copyright of Finite Elements in Analysis & Design is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROBABILITY theory KW - AEROELASTICITY KW - CONSTRAINT satisfaction (Artificial intelligence) KW - FAILURE analysis (Engineering) KW - AIRCRAFT industry KW - SUPERSONIC flow (Aerodynamics) KW - Aeroelastic flutter KW - Elastic panels KW - Reliability-based design optimization N1 - Accession Number: 89270748; Stanford, Bret 1; Email Address: bretkennedystanford@gmail.com Beran, Philip 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, United States; Source Info: Aug2013, Vol. 70-71, p15; Subject Term: PROBABILITY theory; Subject Term: AEROELASTICITY; Subject Term: CONSTRAINT satisfaction (Artificial intelligence); Subject Term: FAILURE analysis (Engineering); Subject Term: AIRCRAFT industry; Subject Term: SUPERSONIC flow (Aerodynamics); Author-Supplied Keyword: Aeroelastic flutter; Author-Supplied Keyword: Elastic panels; Author-Supplied Keyword: Reliability-based design optimization; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 441220 Motorcycle, boat and other motor vehicle dealers; NAICS/Industry Codes: 441228 Motorcycle, ATV, and All Other Motor Vehicle Dealers; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.finel.2013.03.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89270748&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mariano, Edward AU - Lehr, Megan AU - Loland, Vanessa AU - Bishop, Michael T1 - Choice of loco-regional anesthetic technique affects operating room efficiency for carpal tunnel release. JO - Journal of Anesthesia JF - Journal of Anesthesia Y1 - 2013/08// VL - 27 IS - 4 M3 - Article SP - 611 EP - 614 PB - Springer Science & Business Media B.V. SN - 09138668 AB - Intravenous regional anesthesia (Bier block) is indicated for minor procedures such as carpal tunnel release but must be performed in the operating room. We hypothesize that preoperative peripheral nerve blocks decrease anesthesia-controlled time compared to Bier block for carpal tunnel release. With IRB approval, we reviewed surgical case data from a tertiary care university hospital outpatient surgery center for 1 year. Unilateral carpal tunnel release cases were grouped by anesthetic technique: (1) preoperative nerve blocks, or (2) Bier block. The primary outcome was anesthesia-controlled time (minutes). Secondary outcomes included surgical time and time for nerve block performance in minutes, when applicable. Eighty-nine cases met criteria for analysis (40 nerve block and 49 Bier block). Anesthesia-controlled time [median (10th-90th percentiles)] was shorter for the nerve block group compared to Bier block [11 (6-18) vs. 13 (9-20) min, respectively; p = 0.02). Surgical time was also shorter for the nerve block group vs. the Bier block group [13 (8-21) and 17 (10-29) min, respectively; p < 0.01), but nerve blocks took 10 (5-28) min to perform. Ultrasound-guided nerve blocks performed preoperatively reduce anesthesia-controlled time compared to Bier block and may be a useful anesthetic modality in some practice environments. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Anesthesia is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTRAVENOUS anesthesia KW - RESEARCH KW - CONDUCTION anesthesia KW - OPERATING rooms KW - CARPAL tunnel syndrome KW - PERIPHERAL nervous system KW - Anesthesia KW - Bier block KW - Conduction KW - Nerve block KW - Operating room efficiency KW - Ultrasound N1 - Accession Number: 89702013; Mariano, Edward; Email Address: emariano@stanford.edu Lehr, Megan 1 Loland, Vanessa 2 Bishop, Michael 3; Affiliation: 1: United States Air Force, Biloxi USA 2: Department of Anesthesiology and Pain Medicine, University of Washington, Seattle USA 3: Department of Anesthesiology, University of California, San Diego USA; Source Info: 2013, Vol. 27 Issue 4, p611; Subject Term: INTRAVENOUS anesthesia; Subject Term: RESEARCH; Subject Term: CONDUCTION anesthesia; Subject Term: OPERATING rooms; Subject Term: CARPAL tunnel syndrome; Subject Term: PERIPHERAL nervous system; Author-Supplied Keyword: Anesthesia; Author-Supplied Keyword: Bier block; Author-Supplied Keyword: Conduction; Author-Supplied Keyword: Nerve block; Author-Supplied Keyword: Operating room efficiency; Author-Supplied Keyword: Ultrasound; Number of Pages: 4p; Document Type: Article L3 - 10.1007/s00540-013-1578-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89702013&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alarcon, Gene M. AU - Edwards, Jean M. AU - Clark, Patrick C. T1 - Coping strategies and first year performance in postsecondary education. JO - Journal of Applied Social Psychology JF - Journal of Applied Social Psychology Y1 - 2013/08// VL - 43 IS - 8 M3 - Article SP - 1676 EP - 1685 SN - 00219029 AB - Coping was hypothesized to explain additional variance in first year grade point averages ( GPAs) controlling for cognitive ability and conscientiousness. First year GPAs were assessed as criterion for performance in the first year. Results indicate active coping, denial, behavioral disengagement, and alcohol disengagement are related to first year GPA. Denial and alcohol disengagement coping strategies were significant predictors and negatively related to first year GPA in the final regression equation controlling for cognitive ability and conscientiousness. Latent growth modeling analysis demonstrated cognitive ability predicted both the intercept and slope of first year GPA. Conscientiousness was a predictor of initial GPA but not change. Lastly, coping was a significant predictor of change in GPA. Implications for research and theory are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Social Psychology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADJUSTMENT (Psychology) KW - GRADE point average KW - COGNITIVE ability KW - DISENGAGEMENT (Psychology) KW - DENIAL (Psychology) KW - REGRESSION analysis KW - ACADEMIC improvement KW - MOTIVATION in education N1 - Accession Number: 89680662; Alarcon, Gene M. 1 Edwards, Jean M. 2 Clark, Patrick C. 2; Affiliation: 1: Air Force Research Laboratory 2: Wright State University; Source Info: Aug2013, Vol. 43 Issue 8, p1676; Subject Term: ADJUSTMENT (Psychology); Subject Term: GRADE point average; Subject Term: COGNITIVE ability; Subject Term: DISENGAGEMENT (Psychology); Subject Term: DENIAL (Psychology); Subject Term: REGRESSION analysis; Subject Term: ACADEMIC improvement; Subject Term: MOTIVATION in education; Number of Pages: 10p; Illustrations: 2 Diagrams, 2 Charts; Document Type: Article L3 - 10.1111/jasp.12120 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89680662&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, Mingjie AU - Abriola, Linda M. AU - Amos, Benjamin K. AU - Suchomel, Eric J. AU - Pennell, Kurt D. AU - Löffler, Frank E. AU - Christ, John A. T1 - Microbially enhanced dissolution and reductive dechlorination of PCE by a mixed culture: Model validation and sensitivity analysis. JO - Journal of Contaminant Hydrology JF - Journal of Contaminant Hydrology Y1 - 2013/08// VL - 151 M3 - Article SP - 117 EP - 130 SN - 01697722 AB - Abstract: Reductive dechlorination catalyzed by organohalide-respiring bacteria is often considered for remediation of non-aqueous phase liquid (NAPL) source zones due to cost savings, ease of implementation, regulatory acceptance, and sustainability. Despite knowledge of the key dechlorinators, an understanding of the processes and factors that control NAPL dissolution rates and detoxification (i.e., ethene formation) is lacking. A recent column study demonstrated a 5-fold cumulative enhancement in tetrachloroethene (PCE) dissolution and ethene formation (Amos et al., 2009). Spatial and temporal monitoring of key geochemical and microbial (i.e., Geobacter lovleyi and Dehalococcoides mccartyi strains) parameters in the column generated a data set used herein as the basis for refinement and testing of a multiphase, compositional transport model. The refined model is capable of simulating the reactive transport of multiple chemical constituents produced and consumed by organohalide-respiring bacteria and accounts for substrate limitations and competitive inhibition. Parameter estimation techniques were used to optimize the values of sensitive microbial kinetic parameters, including maximum utilization rates, biomass yield coefficients, and endogenous decay rates. Comparison and calibration of model simulations with the experimental data demonstrate that the model is able to accurately reproduce measured effluent concentrations, while delineating trends in dechlorinator growth and reductive dechlorination kinetics along the column. Sensitivity analyses performed on the optimized model parameters indicate that the rates of PCE and cis-1,2-dichloroethene (cis-DCE) transformation and Dehalococcoides growth govern bioenhanced dissolution, as long as electron donor (i.e., hydrogen flux) is not limiting. Dissolution enhancements were shown to be independent of cis-DCE accumulation; however, accumulation of cis-DCE, as well as column length and flow rate (i.e., column residence time), strongly influenced the extent of reductive dechlorination. When cis-DCE inhibition was neglected, the model over-predicted ethene production ten-fold, while reductions in residence time (i.e., a two-fold decrease in column length or two-fold increase in flow rate) resulted in a more than 70% decline in ethene production. These results suggest that spatial and temporal variations in microbial community composition and activity must be understood to model, predict, and manage bioenhanced NAPL dissolution. [Copyright &y& Elsevier] AB - Copyright of Journal of Contaminant Hydrology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISSOLUTION (Chemistry) KW - DECHLORINATION (Chemistry) KW - MIXED culture (Microbiology) KW - MODEL validation KW - SENSITIVITY analysis KW - TETRACHLOROETHYLENE KW - MICROBIAL respiration KW - NONAQUEOUS phase liquids KW - Enhanced dissolution KW - Model verification KW - Modeling KW - NAPL KW - PCE KW - Reductive dechlorination N1 - Accession Number: 89432888; Chen, Mingjie 1 Abriola, Linda M. 2 Amos, Benjamin K. 3 Suchomel, Eric J. 4 Pennell, Kurt D. 2 Löffler, Frank E. 5,6,7 Christ, John A. 8; Email Address: john.christ@usafa.edu; Affiliation: 1: Atmospheric, Earth and Energy Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, United States 2: Department of Civil and Environmental Engineering, Tufts University, Medford, MA 02155, United States 3: Geosyntec Consultants, Kennesaw, GA 30144, United States 4: Geosyntec Consultants, San Francisco, CA 94105, United States 5: Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, TN 37996, United States 6: Department of Microbiology, University of Tennessee, Knoxville, TN 37996, United States 7: Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States 8: Department of Civil and Environmental Engineering, US Air Force Academy, CO 80840, United States; Source Info: Aug2013, Vol. 151, p117; Subject Term: DISSOLUTION (Chemistry); Subject Term: DECHLORINATION (Chemistry); Subject Term: MIXED culture (Microbiology); Subject Term: MODEL validation; Subject Term: SENSITIVITY analysis; Subject Term: TETRACHLOROETHYLENE; Subject Term: MICROBIAL respiration; Subject Term: NONAQUEOUS phase liquids; Author-Supplied Keyword: Enhanced dissolution; Author-Supplied Keyword: Model verification; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: NAPL; Author-Supplied Keyword: PCE; Author-Supplied Keyword: Reductive dechlorination; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.jconhyd.2013.05.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89432888&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kihm, Kenneth D. AU - Chang K. Choi AU - Pratt, David M. T1 - Heat Transfer Gallery. JO - Journal of Heat Transfer JF - Journal of Heat Transfer Y1 - 2013/08// VL - 135 IS - 8 M3 - Article SP - 1 EP - 1 SN - 00221481 AB - An introduction is presented in which the editor discusses various papers within the issue from the 2012 Summer Heat Transfer Conference held in Puerto Rico on July 8-12, 2012, and the 2012 International Mechanical Engineering Congress and Exhibition held in Houston, Texas on November 9-15, 2012. KW - HEAT transfer KW - MECHANICAL engineering -- Congresses KW - CONGRESSES N1 - Accession Number: 89913842; Kihm, Kenneth D. 1 Chang K. Choi 2 Pratt, David M. 3; Affiliation: 1: Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, TN 37996 2: Mechanical Engineering-Engineering Mechanics, Michigan Technological University, MI 49931 3: Air Force Research Laboratory, WPAFB, OH 45433; Source Info: Aug2013, Vol. 135 Issue 8, p1; Subject Term: HEAT transfer; Subject Term: MECHANICAL engineering -- Congresses; Subject Term: CONGRESSES; NAICS/Industry Codes: 541330 Engineering Services; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89913842&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kirchoff, E. AU - Kihm, K. D. AU - Rosenfeld, J. AU - Rawal, S. AU - Bilheux, H. AU - Walker, L. AU - Voisin, S. AU - Pratt, D. AU - Swanson, A. T1 - Neutron Tomography of Lithium (Li) Menisci inside a Molybdenum (Mo) Heat Pipe. JO - Journal of Heat Transfer JF - Journal of Heat Transfer Y1 - 2013/08// VL - 135 IS - 8 M3 - Article SP - 1 EP - 1 SN - 00221481 AB - The article offers information on a research conducted by scientists E. Kirchoff, J. Rosenfeld and S. Rawal related to neutron tomography of Lithium menisci inside a Molybdenum heat pipe. KW - COMPUTED tomography KW - HEAT pipes KW - MOLYBDENUM N1 - Accession Number: 89913843; Kirchoff, E. 1 Kihm, K. D. 1 Rosenfeld, J. 2 Rawal, S. 3 Bilheux, H. 4 Walker, L. 4 Voisin, S. 4 Pratt, D. 5 Swanson, A. 5; Affiliation: 1: University of Tennessee, Knoxville, Tennessee, U. S. A. 2: Thermacore Inc., Lancaster, Pennsylvania, U. S. A. 3: Lockheed-Martin Space Systems Company, Denver, Colorado, U. S. A. 4: Oak Ridge National Laboratory, Oak Ridge, Tennessee, U. S. A. 5: Air Force Research Laboratory, WPAFB, Ohio, U. S. A.; Source Info: Aug2013, Vol. 135 Issue 8, p1; Subject Term: COMPUTED tomography; Subject Term: HEAT pipes; Subject Term: MOLYBDENUM; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89913843&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Iskrenova, Eugeniya K. AU - Patnaik, Soumya S. T1 - Transport Properties of Water and Sodium Dodecyl Sulfate. JO - Journal of Nanotechnology in Engineering & Medicine JF - Journal of Nanotechnology in Engineering & Medicine Y1 - 2013/08// VL - 4 IS - 3 M3 - Article SP - 031001-1 EP - 031001-6 SN - 19492944 AB - In this work, results from atomistic molecular dynamics studies investigating the effect of surfactant concentration on the transport properties of bulk surfactant aqueous solutions, focusing on the anionic surfactant sodium dodecyl sulfate (SDS), are reported. The surfactant self-diffusion and the thermal conductivity of bulk aqueous SDS solutions were computed at a range of concentrations at room and boiling temperatures. Additionally, MP2f (Akin-Ojo et al., 2008, "Developing Ab Initio Quality Force Fields From Condensed Phase Quantum-Mechanics/Molecular-Mechanics Calculations Through the Adaptive Force Matching Method," J. Phys. Chem., 129, p. 064108), one of a new generation water potentials is assessed for its suitability in reproducing the transport and thermal properties of bulk water. The thermal conductivity of MP2f water model was found to be: 0.64 W/(m·K) at 298 K and 0.66 W/(m·K) at 373 K, in much better agreement with the experimental values compared to both the rigid and the flexible TIP3P water model. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nanotechnology in Engineering & Medicine is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SODIUM dodecyl sulfate KW - MOLECULAR dynamics KW - SURFACE active agents KW - AQUEOUS solutions KW - SELF-diffusion (Solid state physics) KW - THERMAL conductivity KW - adaptive force matching KW - diffusion coefficient KW - flexible water models KW - heat transfer KW - molecular dynamics KW - MP2f KW - self-diffusion KW - thermal conductivity KW - TIP3P N1 - Accession Number: 95853580; Iskrenova, Eugeniya K. 1; Email Address: eugeniya.iskrenova-ekiert.ctr.bg@us.af.mil Patnaik, Soumya S. 2; Email Address: soumya.patnaik.1@us.af.mil; Affiliation: 1: Aerospace Systems Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433 UES, Inc., Dayton, OH 45432 2: Aerospace Systems Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433; Source Info: Aug2013, Vol. 4 Issue 3, p031001-1; Subject Term: SODIUM dodecyl sulfate; Subject Term: MOLECULAR dynamics; Subject Term: SURFACE active agents; Subject Term: AQUEOUS solutions; Subject Term: SELF-diffusion (Solid state physics); Subject Term: THERMAL conductivity; Author-Supplied Keyword: adaptive force matching; Author-Supplied Keyword: diffusion coefficient; Author-Supplied Keyword: flexible water models; Author-Supplied Keyword: heat transfer; Author-Supplied Keyword: molecular dynamics; Author-Supplied Keyword: MP2f; Author-Supplied Keyword: self-diffusion; Author-Supplied Keyword: thermal conductivity; Author-Supplied Keyword: TIP3P; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1115/1.4025652 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95853580&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wyman, Daniel O. T1 - A Culture of Patient Safety in Military Medicine. JO - Military Medicine JF - Military Medicine Y1 - 2013/08// VL - 178 IS - 8 M3 - Opinion SP - 825 EP - 826 PB - AMSUS SN - 00264075 AB - The article presents a commentary on the state of patient safety in military medicine in the U.S. in 2013. A report from the Institute of Medicine in 1999 revealed 44,000 to 98,000 deaths in U.S. hospitals because of preventable medical errors. Medical guidelines and policies are recognized for improving the efficiency, effectiveness and safety of the delivery of medical care. The role of health care teams in the execution of health care standards is also described. KW - PATIENTS -- Safety measures KW - MILITARY medicine KW - MEDICAL errors KW - STATISTICS KW - MEDICAL policy KW - MEDICAL care -- United States KW - HEALTH care teams KW - UNITED States KW - INSTITUTE of Medicine (U.S.) N1 - Accession Number: 89767690; Wyman, Daniel O. 1; Affiliation: 1: Headquarters Air Combat Command, 162 Dodd Boulevard, Langley AFB, VA 23665; Source Info: Aug2013, Vol. 178 Issue 8, p825; Subject Term: PATIENTS -- Safety measures; Subject Term: MILITARY medicine; Subject Term: MEDICAL errors; Subject Term: STATISTICS; Subject Term: MEDICAL policy; Subject Term: MEDICAL care -- United States; Subject Term: HEALTH care teams; Subject Term: UNITED States; Company/Entity: INSTITUTE of Medicine (U.S.); Number of Pages: 2p; Document Type: Opinion L3 - 10.7205/MILMED-D-13-00183 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89767690&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Seaho Jeon AU - Min Wang AU - Loon-Seng Tan AU - Cooper, Thomas AU - Hamblin, Michael R. AU - Long Y. Chiang T1 - Synthesis of Photoresponsive Dual NIR Two-Photon Absorptive [60]Fullerene Triads and Tetrads. JO - Molecules JF - Molecules Y1 - 2013/08// VL - 18 IS - 8 M3 - Article SP - 9603 EP - 9622 SN - 14203049 AB - Broadband nonlinear optical (NLO) organic nanostructures exhibiting both ultrafast photoresponse and a large cross-section of two-photon absorption throughout a wide NIR spectrum may make them suitable for use as nonlinear biophotonic materials. We report here the synthesis and characterization of two C60-(antenna)x analogous compounds as branched triad C60(>DPAF-C18)(>CPAF-C2M) and tetrad C60(>DPAF-C18)(>CPAF-C2M)2 nanostructures. These compounds showed approximately equal extinction coefficients of optical absorption over 400-550 nm that corresponds to near-IR two-photon based excitation wavelengths at 780-1,100 nm. Accordingly, they may be utilized as potential precursor candidates to the active-core structures of photosensitizing nanodrugs for 2γ-PDT in the biological optical window of 800-1,050 nm. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecules is the property of MDPI Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FULLERENES -- Synthesis KW - NONLINEAR optical materials -- Spectra KW - NANOSTRUCTURES KW - LIGHT absorption KW - EXCITATION spectrum KW - 2γ-photodynamic therapeutic agent KW - C60-(antenna)x nanostructures KW - NIR two-photon absorption KW - photosensitizer KW - ultrafast intramolecular energy-transfer N1 - Accession Number: 89941297; Seaho Jeon 1 Min Wang 1 Loon-Seng Tan 2 Cooper, Thomas 2 Hamblin, Michael R. 3,4 Long Y. Chiang 1; Email Address: Long_Chiang@uml.edu; Affiliation: 1: Department of Chemistry, Institute of Nanoscience and Engineering Technology, University of Massachusetts, Lowell, MA 01854, USA 2: AFRL/RXAS, Functional Materials Division, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA 3: Wellman Center for Photomedicine, Massachusetts General Hospital, Department of Dermatology, Harvard Medical School, Boston, MA 02114, USA 4: Harvard MIT Division of Health Science and Technology, Cambridge, MA 02139, USA; Source Info: Aug2013, Vol. 18 Issue 8, p9603; Subject Term: FULLERENES -- Synthesis; Subject Term: NONLINEAR optical materials -- Spectra; Subject Term: NANOSTRUCTURES; Subject Term: LIGHT absorption; Subject Term: EXCITATION spectrum; Author-Supplied Keyword: 2γ-photodynamic therapeutic agent; Author-Supplied Keyword: C60-(antenna)x nanostructures; Author-Supplied Keyword: NIR two-photon absorption; Author-Supplied Keyword: photosensitizer; Author-Supplied Keyword: ultrafast intramolecular energy-transfer; Number of Pages: 27p; Illustrations: 2 Diagrams, 6 Graphs; Document Type: Article L3 - 10.3390/molecules18089603 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89941297&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, S.I. AU - Dimiduk, D.M. AU - El-Awady, J.A. AU - Parthasarathy, T.A. AU - Uchic, M.D. AU - Woodward, C. T1 - Spontaneous athermal cross-slip nucleation at screw dislocation intersections in FCC metals and L1 2 intermetallics investigated via atomistic simulations. JO - Philosophical Magazine JF - Philosophical Magazine Y1 - 2013/08// VL - 93 IS - 22 M3 - Article SP - 3012 EP - 3028 SN - 14786435 AB - In this manuscript, we extend on our prior work to show that under certain conditions cross-slip nucleation is athermal and spontaneous with zero activation energy in FCC elemental metals such as Ni and Cu, and L12intermetallic compounds such as Ni3Al. Using atomistic simulations (molecular statics), we show that spontaneous cross-slip occurs at mildly repulsive intersections. Further, the local Shockley partial dislocation interactions at such repulsive intersections are found to be attractive leading to junction formation. The line orientation of the intersecting dislocation determines whether the spontaneous cross-slip nucleation occurs from either the glide plane to the cross-slip plane or vice versa. Collectively, these results suggest that cross-slip should be preferentially observed at selected screw dislocation intersections in FCC-derviative metals and alloys. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Magazine is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATHERMALIZATION KW - DISLOCATION nucleation KW - FACE centered cubic structure KW - INTERMETALLIC compounds KW - ACTIVATION energy KW - COPPER alloys KW - NICKEL alloys KW - atomistic simulations KW - copper KW - cross-slip KW - dislocation intersections KW - nickel N1 - Accession Number: 89660398; Rao, S.I. 1; Email Address: Satish.Rao@wpafb.af.mil Dimiduk, D.M. 2 El-Awady, J.A. 3 Parthasarathy, T.A. 1 Uchic, M.D. 2 Woodward, C. 2; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Rd, Dayton, OH, 45432-1894, US 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, Dayton, OH, 45433-7817, US 3: Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, 21218, US; Source Info: Aug2013, Vol. 93 Issue 22, p3012; Subject Term: ATHERMALIZATION; Subject Term: DISLOCATION nucleation; Subject Term: FACE centered cubic structure; Subject Term: INTERMETALLIC compounds; Subject Term: ACTIVATION energy; Subject Term: COPPER alloys; Subject Term: NICKEL alloys; Author-Supplied Keyword: atomistic simulations; Author-Supplied Keyword: copper; Author-Supplied Keyword: cross-slip; Author-Supplied Keyword: dislocation intersections; Author-Supplied Keyword: nickel; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 331410 Nonferrous Metal (except Aluminum) Smelting and Refining; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 17p; Document Type: Article L3 - 10.1080/14786435.2013.799788 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89660398&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kyle, Brent T1 - Knowledge as a thick concept: explaining why the Gettier problem arises. JO - Philosophical Studies JF - Philosophical Studies Y1 - 2013/08// VL - 165 IS - 1 M3 - Article SP - 1 EP - 27 PB - Springer Science & Business Media B.V. SN - 00318116 AB - The Gettier problem has stymied epistemologists. But, whether or not this problem is resolvable, we still must face an important question: Why does the Gettier problem arise in the first place? So far, philosophers have seen it as either a problem peculiar to the concept of knowledge, or else an instance of a general problem about conceptual analysis. But I would like to steer a middle course. I argue that the Gettier problem arises because knowledge is a thick concept, and a Gettier-like problem is just what we should expect from attempts at analyzing a thick concept. Section 2 is devoted to establishing the controversial claim that knowledge is thick, and, in Sect. 3, I show that there is a general problem for analyzing thick concepts of which the Gettier problem is a special instance. I do not take a stand on whether the Gettier problem, or its general counterpart, is resolvable. My primary aim is to bring these problems into better focus. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Studies is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GETTIER problem KW - THEORY of knowledge KW - PHILOSOPHERS KW - SCHOLARS KW - HUMANISTS KW - Analysis KW - Epistemic luck KW - Gettier problem KW - Knowledge KW - Thick concepts KW - Thick terms KW - Veritic luck N1 - Accession Number: 89093733; Kyle, Brent 1; Email Address: bgk5@cornell.edu; Affiliation: 1: Department of Philosophy, United States Air Force Academy, 2354 Fairchild Drive USAF Academy 80840 USA; Source Info: Aug2013, Vol. 165 Issue 1, p1; Subject Term: GETTIER problem; Subject Term: THEORY of knowledge; Subject Term: PHILOSOPHERS; Subject Term: SCHOLARS; Subject Term: HUMANISTS; Author-Supplied Keyword: Analysis; Author-Supplied Keyword: Epistemic luck; Author-Supplied Keyword: Gettier problem; Author-Supplied Keyword: Knowledge; Author-Supplied Keyword: Thick concepts; Author-Supplied Keyword: Thick terms; Author-Supplied Keyword: Veritic luck; Number of Pages: 27p; Document Type: Article L3 - 10.1007/s11098-012-9919-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89093733&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - French, David M. AU - Shiffler, Don AU - Cartwright, Keith T1 - Electron beam coupling to a metamaterial structure. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2013/08// VL - 20 IS - 8 M3 - Article SP - 083116 PB - American Institute of Physics SN - 1070664X AB - Microwave metamaterials have shown promise in numerous applications, ranging from strip lines and antennas to metamaterial-based electron beam driven devices. In general, metamaterials allow microwave designers to obtain electromagnetic characteristics not typically available in nature. High Power Microwave (HPM) sources have in the past drawn inspiration from work done in the conventional microwave source community. In this article, the use of metamaterials in an HPM application is considered by using an effective medium model to determine the coupling of an electron beam to a metamaterial structure in a geometry similar to that of a dielectric Cerenkov maser. Use of the effective medium model allows for the analysis of a wide range of parameter space, including the 'mu-negative,' 'epsilon-negative,' and 'double negative' regimes of the metamaterial. The physics of such a system are modeled analytically and by utilizing the particle-in-cell code ICEPIC. For this geometry and effective medium representation, optimum coupling of the electron beam to the metamaterial, and thus the optimum microwave or RF production, occurs in the epsilon negative regime of the metamaterial. Given that HPM tubes have been proposed that utilize a metamaterial, this model provides a rapid method of characterizing a source geometry that can be used to quickly understand the basic physics of such an HPM device. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON beams KW - METAMATERIALS KW - MICROWAVES KW - STRIP transmission lines KW - ANTENNAS (Electronics) KW - ELECTROMAGNETISM N1 - Accession Number: 90048493; French, David M. 1 Shiffler, Don 1 Cartwright, Keith 2; Affiliation: 1: Directed Energy Directorate, Air Force Research Laboratory, Albuquerque, New Mexico 87117, 2: Sandia National Laboratories, Albuquerque, New Mexico 87185,; Source Info: Aug2013, Vol. 20 Issue 8, p083116; Subject Term: ELECTRON beams; Subject Term: METAMATERIALS; Subject Term: MICROWAVES; Subject Term: STRIP transmission lines; Subject Term: ANTENNAS (Electronics); Subject Term: ELECTROMAGNETISM; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.4817021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90048493&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adler, Peter H. AU - Huang, Yao-Te AU - Reeves, Will K. AU - Kim, Sam Kyu AU - Otsuka, Yasushi AU - Takaoka, Hiroyuki T1 - Macrogenomic Evidence for the Origin of the Black Fly Simulium suzukii (Diptera: Simuliidae) on Okinawa Island, Japan. JO - PLoS ONE JF - PLoS ONE Y1 - 2013/08// VL - 8 IS - 8 M3 - Article SP - 1 EP - 13 PB - Public Library of Science SN - 19326203 AB - To determine the geographic origin of the black fly Simulium suzukii on Okinawa Island, Japan, macrogenomic profiles derived from its polytene chromosomes were compared with those of mainland and other insular populations of S. suzukii and of the isomorphic Simulium tani species complex. The Okinawan population is a chromosomally unique cytoform, designated ‘D,’ which is essentially monomorphic and differs by about 27 fixed rearrangements from the chromosomal standard sequence for the subgenus Simulium and by two fixed differences from its nearest known relative, representing the type of S. suzukii, on the main islands of Japan. Chromosomal band sequences revealed two additional, sympatric cytoforms of S. suzukii, designated ‘A’ and ‘B,’ each with species status, in Korea, and a third cytoform, designated ‘C,’ on Hokkaido, Japan. A new cytoform, ‘K,’ of S. tani from Malaysia, representing the type of S. tani, is more closely related to cytoforms in Thailand, as are populations from Taiwan previously treated as S. suzukii but more closely aligned with S. tani and newly recognized as cytoform ‘L’ of the latter nominal species. Rooting of chromosomal band sequences by outgroup comparisons allowed directionality of chromosomal rearrangements to be established, enabling phylogenetic inference of cytoforms. Of 41 macrogenomic rearrangements discovered in the five new cytoforms, four provide evidence for a stepwise origin of the Okinawan population from populations characteristic of the main islands of Japan. The macrogenomic approach applied to black flies on Okinawa Island illustrates its potential utility in defining source areas for other species of flies including those that might pose medical and veterinary risks. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GENOMICS KW - SIMULIIDAE KW - CYTOGENETICS KW - EVOLUTION (Biology) KW - ZOOLOGY -- Research KW - OKINAWA Island (Japan) KW - Animal phylogenetics KW - Animal taxonomy KW - Biology KW - Chromosome biology KW - Chromosome structure and function KW - Cytogenetic analysis KW - Cytogenetics KW - Entomology KW - Evolutionary biology KW - Evolutionary systematics KW - Genetics KW - Genomics KW - Molecular cell biology KW - Phylogenetics KW - Research Article KW - Taxonomy KW - Zoology N1 - Accession Number: 90070877; Adler, Peter H. 1; Email Address: padler@clemson.edu Huang, Yao-Te 1,2 Reeves, Will K. 3 Kim, Sam Kyu 4 Otsuka, Yasushi 5 Takaoka, Hiroyuki 6; Affiliation: 1: 1 School of Agricultural, Forest and Environmental Sciences, Clemson University, Clemson, South Carolina, United States of America 2: 2 Department of Plant Medicine, National Chiayi University, Chiayi, Taiwan 3: 3 United States Air Force School of Aerospace Medicine, Wright-Patterson Air Force Base, Ohio, United States of America 4: 4 Department of Applied Biology, Kangwon National University, Chuncheon, Republic of Korea 5: 5 Department of Infectious Disease Control, Oita University, Oita, Japan 6: 6 Institute of Biological Sciences, University of Malaya, Kuala Lumpur, Malaysia; Source Info: Aug2013, Vol. 8 Issue 8, p1; Subject Term: GENOMICS; Subject Term: SIMULIIDAE; Subject Term: CYTOGENETICS; Subject Term: EVOLUTION (Biology); Subject Term: ZOOLOGY -- Research; Subject Term: OKINAWA Island (Japan); Author-Supplied Keyword: Animal phylogenetics; Author-Supplied Keyword: Animal taxonomy; Author-Supplied Keyword: Biology; Author-Supplied Keyword: Chromosome biology; Author-Supplied Keyword: Chromosome structure and function; Author-Supplied Keyword: Cytogenetic analysis; Author-Supplied Keyword: Cytogenetics; Author-Supplied Keyword: Entomology; Author-Supplied Keyword: Evolutionary biology; Author-Supplied Keyword: Evolutionary systematics; Author-Supplied Keyword: Genetics; Author-Supplied Keyword: Genomics; Author-Supplied Keyword: Molecular cell biology; Author-Supplied Keyword: Phylogenetics; Author-Supplied Keyword: Research Article; Author-Supplied Keyword: Taxonomy; Author-Supplied Keyword: Zoology; Number of Pages: 13p; Document Type: Article L3 - 10.1371/journal.pone.0070765 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90070877&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pandey, Ras B. AU - Kuang, Zhifeng AU - Farmer, Barry L. T1 - A Hierarchical Coarse-Grained (All-Atom-to-All-Residue) Computer Simulation Approach: Self-Assembly of Peptides. JO - PLoS ONE JF - PLoS ONE Y1 - 2013/08// VL - 8 IS - 8 M3 - Article SP - 1 EP - 8 PB - Public Library of Science SN - 19326203 AB - A hierarchical computational approach (all-atom residue to all-residue peptide) is introduced to study self-organizing structures of peptides as a function of temperature. A simulated residue-residue interaction involving all-atom description, analogous to knowledge-based analysis (with different input), is used as an input to a phenomenological coarse-grained interaction for large scales computer simulations. A set of short peptides P1 (1H 2S 3S 4Y 5W 6Y 7A 8F 9N 10N 11K 12T) is considered as an example to illustrate the utility. We find that peptides assemble rather fast into globular aggregates at low temperatures and disperse as random-coil at high temperatures. The specificity of the mass distribution of the self-assembly depends on the temperature and spatial lengths which are identified from the scaling of the structure factor. Analysis of energy and mobility profiles, gyration radius of peptide, and radial distribution function of the assembly provide insight into the multi-scale (intra- and inter-chain) characteristics. Thermal response of the global assembly with the simulated residue-residue interaction is consistent with that of the knowledge-based analysis despite expected quantitative differences. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER simulation KW - MOLECULAR self-assembly KW - PEPTIDES KW - BIOPHYSICS KW - MATERIALS science KW - MICROSTRUCTURE KW - THEORY of knowledge KW - Biology KW - Biomaterials KW - Biophysic al simulations KW - Biophysics KW - Biophysics simulations KW - Computational biology KW - Computer modeling KW - Computer science KW - Computerized simulations KW - Interdisciplinary physics KW - Materials physics KW - Materials science KW - Microstructure KW - Physics KW - Research Article KW - Statistical mechanics N1 - Accession Number: 90070947; Pandey, Ras B. 1; Email Address: ras.pandey@usm.edu Kuang, Zhifeng 2 Farmer, Barry L. 2; Affiliation: 1: 1 Department of Physics and Astronomy, University of Southern Mississippi, Hattiesburg, Mississippi, United States of America 2: 2 Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio, United States of America; Source Info: Aug2013, Vol. 8 Issue 8, p1; Subject Term: COMPUTER simulation; Subject Term: MOLECULAR self-assembly; Subject Term: PEPTIDES; Subject Term: BIOPHYSICS; Subject Term: MATERIALS science; Subject Term: MICROSTRUCTURE; Subject Term: THEORY of knowledge; Author-Supplied Keyword: Biology; Author-Supplied Keyword: Biomaterials; Author-Supplied Keyword: Biophysic al simulations; Author-Supplied Keyword: Biophysics; Author-Supplied Keyword: Biophysics simulations; Author-Supplied Keyword: Computational biology; Author-Supplied Keyword: Computer modeling; Author-Supplied Keyword: Computer science; Author-Supplied Keyword: Computerized simulations; Author-Supplied Keyword: Interdisciplinary physics; Author-Supplied Keyword: Materials physics; Author-Supplied Keyword: Materials science; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Physics; Author-Supplied Keyword: Research Article; Author-Supplied Keyword: Statistical mechanics; Number of Pages: 8p; Document Type: Article L3 - 10.1371/journal.pone.0070847 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90070947&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jantschner, O. AU - Walter, C. AU - Muratore, C. AU - Voevodin, A.A. AU - Mitterer, C. T1 - V-alloyed ZrO2 coatings with temperature homogenization function for high-temperature sliding contacts. JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2013/08// VL - 228 M3 - Article SP - 76 EP - 83 SN - 02578972 AB - The effect of V additions on reactively magnetron sputtered ZrO2 coatings was investigated with respect to their structural and mechanical properties. Coatings with different V-contents were co-sputtered from Zr and V targets using an Ar+O2 discharge. The X-ray diffraction patterns show a change from monoclinic (0–2.2at.% V) to cubic/tetragonal ZrO2 based phase (5.8at.% V) and finally X-ray amorphous structure at even higher V-content (17.4at.% V). Hardness and Young's modulus decrease beyond 5.8at.% V from 17.4 to 7.5GPa and from 230 to 150GPa, respectively. At 25°C, the coefficient of friction (COF) is ~0.2 for low V-contents and above 0.5 for high V-contents, respectively. Differential scanning calorimetry of powder samples showed a characteristic exothermic peak at ~600°C, which is due to the formation of the ZrV2O7 phase. This phase decomposes above 740°C in ZrO2 and liquid V2O5. The latter phase provides a self-lubricious layer in the sliding contact, decreasing the COF below 0.2 at 800°C for V-contents of 17.4at.%. The endothermic nature of melting of the V2O5 phase is suggested as the basis for thermal management abilities of tribological coatings, where the frictional heat generated in severely loaded sliding contacts and thus local flash temperatures are efficiently reduced. [ABSTRACT FROM AUTHOR] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZIRCONIUM oxide KW - METALS -- Mechanical properties KW - SURFACE coatings KW - X-ray diffraction KW - AMORPHOUS alloys KW - DIFFERENTIAL scanning calorimetry KW - Reactive magnetron sputtering KW - Self-lubrication KW - Thermal management KW - V2O5 KW - ZrO2 KW - ZrV2O7 N1 - Accession Number: 89306738; Jantschner, O. 1; Email Address: oliver.jantschner@unileoben.ac.at Walter, C. 1 Muratore, C. 2 Voevodin, A.A. 2 Mitterer, C. 1; Affiliation: 1: Department of Physical Metallurgy and Materials Testing, Montanuniversität Leoben, Franz-Josef-Strasse 18, 8700 Leoben, Austria 2: Thermal Sciences and Materials Branch, Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Aug2013, Vol. 228, p76; Subject Term: ZIRCONIUM oxide; Subject Term: METALS -- Mechanical properties; Subject Term: SURFACE coatings; Subject Term: X-ray diffraction; Subject Term: AMORPHOUS alloys; Subject Term: DIFFERENTIAL scanning calorimetry; Author-Supplied Keyword: Reactive magnetron sputtering; Author-Supplied Keyword: Self-lubrication; Author-Supplied Keyword: Thermal management; Author-Supplied Keyword: V2O5; Author-Supplied Keyword: ZrO2; Author-Supplied Keyword: ZrV2O7; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.surfcoat.2013.04.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89306738&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pendleton, S. J. AU - Bowman, S. AU - Carter, C. AU - Gundersen, M. A. AU - Lempert, W. T1 - The production and evolution of atomic oxygen in the afterglow of streamer discharge in atmospheric pressure fuel/air mixtures. JO - Journal of Physics: D Applied Physics JF - Journal of Physics: D Applied Physics Y1 - 2013/07/31/ VL - 46 IS - 30 M3 - Article SP - 1 EP - 7 SN - 00223727 AB - In this work two-photon absorption laser-induced fluorescence was used to measure oxygen atom (O) concentrations in streamer discharge afterglow in a variety of fuel/air mixtures in order to account for the O reaction pathways in transient plasma ignition. It is demonstrated that O atoms are generated in high concentration (~5 x 1017 cm-3) directly below the high-voltage anode in a point-to-plane geometry. The corresponding lifetimes in air were on the order of hundreds of microseconds. Fuel chemistry provides consumption pathways via chain branching reactions even without sustained combustion, and the corresponding O-atom lifetimes were much shorter than in air and dependent on the fuel concentration. At the richest conditions, corresponding to a fuel--air equivalence ratio of 2.4, O lifetimes were on the order a few microseconds or less. These experimental results are compared to modelling estimates in order to better understand the role of atomic oxygen in the chemical processes leading to ignition. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: D Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXYGEN KW - RESEARCH KW - OXYGEN atom transfer reactions KW - LIGHT absorption KW - LASER-induced fluorescence KW - ANODES N1 - Accession Number: 90142011; Pendleton, S. J. 1; Email Address: spendlet@usc.edu Bowman, S. 2 Carter, C. 3 Gundersen, M. A. 1 Lempert, W. 2; Affiliation: 1: Pulsed Power Research Group, University of Southern California, Los Angeles, CA 90089, USA 2: Michael A. Chaszeyka Non-Equilibrium Thermodynamics Laboratory, Ohio State University, Columbus, OH 43210, USA 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: 2013, Vol. 46 Issue 30, p1; Subject Term: OXYGEN; Subject Term: RESEARCH; Subject Term: OXYGEN atom transfer reactions; Subject Term: LIGHT absorption; Subject Term: LASER-induced fluorescence; Subject Term: ANODES; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1088/0022-3727/46/30/305202 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90142011&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coppage, Ryan AU - Slocik, Joseph M. AU - Ramezani-Dakhel, Hadi AU - Bedford, Nicholas M. AU - Heinz, Hendrik AU - Naik, Rajesh R. AU - Knecht, Marc R. T1 - Exploiting Localized Surface Binding Effects to Enhance the Catalytic Reactivity of Peptide-Capped Nanoparticles. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2013/07/31/ VL - 135 IS - 30 M3 - Article SP - 11048 EP - 11054 SN - 00027863 AB - Peptide-based methods represent new approaches to selectively produce nanostructures with potentially important functionality. Unfortunately, biocombinatorial methods can only select peptides with target affinity and not for the properties of the final material. In this work, we present evidence to demonstrate that materials-directing peptides can be controllably modified to substantially enhance particle functionality without significantly altering nanostructural morphology. To this end, modification of selected residues to vary the site-specific binding strength and biological recognition can be employed to increase the catalytic efficiency of peptide-capped Pd nanoparticles. These results represent a step toward the de novo design of materials-directing peptides that control nanoparticle structure/function relationships. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REACTIVITY (Chemistry) KW - PEPTIDES KW - NANOPARTICLES KW - PALLADIUM KW - MOLECULAR structure N1 - Accession Number: 90529991; Coppage, Ryan 1 Slocik, Joseph M. 2 Ramezani-Dakhel, Hadi 3 Bedford, Nicholas M. 1,2 Heinz, Hendrik 3 Naik, Rajesh R. 2; Email Address: knecht@miami.edu Knecht, Marc R. 1; Email Address: rajesh.naik@wpafb.af.mil; Affiliation: 1: Department of Chemistry, University of Miami, Coral Gables, Florida 33146, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7702, United States 3: Department of Polymer Engineering, University of Akron, Akron, Ohio, 44325, United States; Source Info: 7/31/2013, Vol. 135 Issue 30, p11048; Subject Term: REACTIVITY (Chemistry); Subject Term: PEPTIDES; Subject Term: NANOPARTICLES; Subject Term: PALLADIUM; Subject Term: MOLECULAR structure; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 7p; Document Type: Article L3 - 10.1021/ja402215t UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90529991&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Murray, P. T. AU - Back, T. C. AU - Cahay, M. M. AU - Fairchild, S. B. AU - Maruyama, B. AU - Lockwood, N. P. AU - Pasquali, M. T1 - Evidence for adsorbate-enhanced field emission from carbon nanotube fibers. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/07/29/ VL - 103 IS - 5 M3 - Article SP - 053113 PB - American Institute of Physics SN - 00036951 AB - We used residual gas analysis (RGA) to identify the species desorbed during field emission (FE) from a carbon nanotube (CNT) fiber. The RGA data show a sharp threshold for H2 desorption at an external field strength that coincides with a breakpoint in the FE data. A comprehensive model for the gradual transition of FE from adsorbate-enhanced CNTs at low bias to FE from CNTs with reduced H2 adsorbate coverage at high bias is developed which accounts for the gradual desorption of the H2 adsorbates, alignment of the CNTs at the fiber tip, and importance of self-heating effects with applied bias. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIELD emission electron microscopy KW - ADSORBATES (Chemistry) KW - CARBON nanotubes KW - GAS analysis KW - CHLOROSULFONIC acid KW - HYSTERESIS N1 - Accession Number: 89546834; Murray, P. T. 1 Back, T. C. 1 Cahay, M. M. 2 Fairchild, S. B. 3 Maruyama, B. 3 Lockwood, N. P. 4 Pasquali, M. 5; Affiliation: 1: Research Institute, University of Dayton, Dayton, Ohio 45469-0170, 2: Spintronics and Vacuum Nanoelectronics Laboratory, University of Cincinnati, Cincinnati, Ohio 45221, 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, Ohio 45433, 4: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, New Mexico 87117, 5: Department of Chemical and Biomolecular Engineering and Department of Chemistry, The Smalley Institute for Nanoscale Science and Technology, Rice University, Houston, Texas 77251-1892,; Source Info: 7/29/2013, Vol. 103 Issue 5, p053113; Subject Term: FIELD emission electron microscopy; Subject Term: ADSORBATES (Chemistry); Subject Term: CARBON nanotubes; Subject Term: GAS analysis; Subject Term: CHLOROSULFONIC acid; Subject Term: HYSTERESIS; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 4p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.4817516 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89546834&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nader Esfahani, N. AU - Peale, R. E. AU - Buchwald, W. R. AU - Fredricksen, C. J. AU - Hendrickson, J. R. AU - Cleary, J. W. T1 - Millimeter-wave photoresponse due to excitation of two-dimensional plasmons in InGaAs/InP high-electron-mobility transistors. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/07/21/ VL - 114 IS - 3 M3 - Article SP - 033105 EP - 033105-5 PB - American Institute of Physics SN - 00218979 AB - A polarized photoresponse to mm-wave radiation over the frequency range of 40 to 108 GHz is demonstrated in a grating-gated high electron mobility transistor (HEMT) formed by an InGaAs/InP heterostructure. The photoresponse is observed within the plasmon resonance absorption band of the HEMT, whose gate consists of a 9 μm period grating that couples incident radiation to plasmons in the 2D electron gas. Gate-bias changes the channel carrier concentration, causing a corresponding change in photoresponse in agreement with theoretical expectations for the shift in the plasmon resonance band. The noise equivalent power is estimated to be 235 pW/Hz1/2. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATION KW - RESEARCH KW - TRANSISTORS KW - ELECTRON gas -- Research KW - PLASMONS (Physics) KW - CHARGE exchange KW - CHARGE exchange reactions N1 - Accession Number: 89266831; Nader Esfahani, N. 1,2,3 Peale, R. E. 2 Buchwald, W. R. 1,4 Fredricksen, C. J. 2 Hendrickson, J. R. 3 Cleary, J. W. 3; Affiliation: 1: Solid State Scientific Corporation, 12 Simon St., Nashua, New Hampshire 03060, 2: Department of Physics, University of Central Florida, Orlando, Florida 32816, 3: Air Force Research Laboratory, Sensors Directorate, 2241 Avionics Circle, Wright Patterson AFB, Ohio 45433, 4: Department of Physics, University of Massachusetts, Boston, Massachusetts 02125,; Source Info: Jul2013, Vol. 114 Issue 3, p033105; Subject Term: RADIATION; Subject Term: RESEARCH; Subject Term: TRANSISTORS; Subject Term: ELECTRON gas -- Research; Subject Term: PLASMONS (Physics); Subject Term: CHARGE exchange; Subject Term: CHARGE exchange reactions; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.4813511 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89266831&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, Danhong AU - Michelle Easter, M. AU - David Wellems, L. AU - Mozer, Henry AU - Gumbs, Godfrey AU - Cardimona, D. A. AU - Maradudin, A. A. T1 - Dynamic and static control of the optical phase of guided p-polarized light for near-field focusing at large angles of incidence. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/07/21/ VL - 114 IS - 3 M3 - Article SP - 033106 EP - 033106-12 PB - American Institute of Physics SN - 00218979 AB - Both dynamic and static approaches are proposed and investigated for controlling the optical phase of a p-polarized light wave guided through a surface-patterned metallic structure with subwavelength features. For dynamic control, the important role of photo-excited electrons in a slit-embedded atomic system with field-induced transparency (FIT) is discovered within a narrow frequency window for modulating the intensity of focused transmitted light in the near-field region. This is facilitated by electromagnetic coupling to surface plasmons between the two FIT-atom embedded slits. The near-field distribution can be adjusted by employing a symmetric (or asymmetric) slit configuration and by a small (or large) slit separation. In addition, the cross-transmission of a light beam is also predicted as a result of this strong coupling between optical transitions in embedded FIT atoms and surface plasmons. For static control, the role of surface curvature is found for focused transmitted light passing through a Gaussian-shaped metallic microlens embedded with a linear array of slits. A negative light-refraction pattern, which is associated with higher-order diffraction modes, was also found for large angles of incidence in the near-field region. This anomalous negative refraction can be suppressed when higher-order waveguide modes of light leak through a very thin film. In addition, this negative refraction can also be suppressed with a reinforced reflection at the left foothill of a Gaussian-shaped slit array of the forward-propagating surface-plasmon wave at large angles of incidence. A prediction is given of near-field focusing of light with its sharpness dynamically controlled by the frequency of the light in a very narrow window. Moreover, a different scheme based on Green's second integral identity is proposed for overcoming a difficulty in calculating the near-field distribution very close to a metallic surface by means of a finite-difference-time-domain method. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL polarization KW - RESEARCH KW - PLASMONS (Physics) KW - FINITE differences KW - ELECTRONS -- Research KW - ELECTROMAGNETIC couplings N1 - Accession Number: 89266833; Huang, Danhong 1 Michelle Easter, M. 2 David Wellems, L. 1 Mozer, Henry 1 Gumbs, Godfrey 2 Cardimona, D. A. 1 Maradudin, A. A. 3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, 2: Department of Physics and Astronomy, Hunter College at the City University of New York, 695 Park Avenue New York, New York 10065, 3: Department of Physics and Astronomy and Institute for Surface and Interface Science, University of California, Irvine, California 92697,; Source Info: Jul2013, Vol. 114 Issue 3, p033106; Subject Term: OPTICAL polarization; Subject Term: RESEARCH; Subject Term: PLASMONS (Physics); Subject Term: FINITE differences; Subject Term: ELECTRONS -- Research; Subject Term: ELECTROMAGNETIC couplings; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.4813609 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89266833&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ullrich, B. AU - Wang, J. S. AU - Brown, G. J. T1 - Comment on 'Temperature dependent optical properties of PbS nanocrystals'. JO - Nanotechnology JF - Nanotechnology Y1 - 2013/07/19/ VL - 24 IS - 28 M3 - Opinion SP - 1 EP - 2 SN - 09574484 AB - We address erroneous statements made by Nordin et al (2012 Nanotechnology 23 275701) claiming the inadequacy of an expression we, Ullrich et al (2011 Appl. Phys. Lett. 99 081901), used to fit the temperature dependence of the photoluminescence and the absorption of PbS quantum dots. We further correct a quote by Nordin et al, who, when referring to our work, mistakenly claimed temperature invariance of the Stokes shift. [ABSTRACT FROM AUTHOR] AB - Copyright of Nanotechnology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOLUMINESCENCE KW - ABSORPTION KW - STOKES shift KW - QUANTUM dots KW - TRANSMITTANCE (Physics) N1 - Accession Number: 90049872; Ullrich, B. 1,2 Wang, J. S. 1 Brown, G. J. 1; Email Address: bruno@fis.unam.mx; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, OH 45433-7707, USA 2: Instituto de Ciencias Físicas, UNAM, Av. Universidad s/n, Col. Chamilpa, Cuernavaca, Morelos, 62210, Mexico; Source Info: 2013, Vol. 24 Issue 28, p1; Subject Term: PHOTOLUMINESCENCE; Subject Term: ABSORPTION; Subject Term: STOKES shift; Subject Term: QUANTUM dots; Subject Term: TRANSMITTANCE (Physics); Number of Pages: 2p; Document Type: Opinion L3 - 10.1088/0957-4484/24/28/288001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90049872&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jeongho Park AU - Mitchel, William C. AU - Elhamri, Said AU - Grazulis, Larry AU - Altfeder, Igor T1 - Abnormal hopping conduction in semiconducting polycrystalline graphene. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2013/07/17/ VL - 88 IS - 3 M3 - Article SP - 035419-1 EP - 035419-8 SN - 10980121 AB - We report the observation of an abnormal carrier transport phenomenon in polycrystalline semiconducting graphene grown by solid carbon source molecular beam epitaxy. At the lowest temperatures in samples with small grain size, the conduction does not obey the two-dimensional Mott-type variable-range hopping (VRH) conduction often reported in semiconducting graphene. The hopping exponent p is found to deviate from the 1/3 value expected for Mott VRH with several samples exhibiting a p=2/5 dependence. We also show that the maximum energy difference between hopping sites is larger than the activation energy for nearest-neighbor hopping, violating the assumptions of the Mott model. The 2/5 dependence more closely agrees with the quasi-one-dimensional VRH model proposed by Fogler, Teber, and Shklovskii (FTS). In the FTS model, conduction occurs by tunneling between neighboring metallic wires. We suggest that metallic edge states and conductive grain boundaries play the role of the metallic wires in the FTS model. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HOPPING conduction KW - POLYCRYSTALLINE semiconductors KW - GRAPHENE -- Electric properties KW - MOLECULAR beam epitaxy KW - GRAIN size KW - ACTIVATION energy KW - METALLIC wire N1 - Accession Number: 90026832; Jeongho Park 1; Email Address: jeongho.park@wpafb.af.mil Mitchel, William C. 1 Elhamri, Said 2 Grazulis, Larry 1 Altfeder, Igor 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RXAN) Wright-Patterson AFB, Ohio 45433-7707, USA 2: Departments of Physics, University of Dayton, Dayton, Ohio 45469, USA; Source Info: Jul2013, Vol. 88 Issue 3, p035419-1; Subject Term: HOPPING conduction; Subject Term: POLYCRYSTALLINE semiconductors; Subject Term: GRAPHENE -- Electric properties; Subject Term: MOLECULAR beam epitaxy; Subject Term: GRAIN size; Subject Term: ACTIVATION energy; Subject Term: METALLIC wire; Number of Pages: 8p; Document Type: Article L3 - 10.1103/PhysRevB.88.035419 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90026832&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fuller, Dane F. AU - Saville, Michael A. T1 - A High-Frequency Multipeak Model for Wide-Angle SAR Imagery. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2013/07/15/Jul2013 Part 2 VL - 51 IS - 7 M3 - Article SP - 4279 EP - 4291 SN - 01962892 AB - A new modeling method for representing distributed scattering centers in wide-angle synthetic aperture radar (SAR) is presented. The proposed multipeak model approximates amplitudes of localized image peaks that typically appear at a single pixel or as an in-line set of pixels in a SAR image. In this way, the multipeak model is an improvement over existing peak models which poorly represent distributed canonical scatterers, such as the common dihedral with a fold line oriented parallel to the imaging plane. The model is derived from a wide-angle approximation of the well-known attributed scattering center or parametric models when under the action of a linear imaging operator. It is shown that, under typical imaging conditions of 10^ \circ or more in the synthetic aperture, the multipeak model approximates the image peak amplitudes due to distributed canonical scatterers as if they are due to an equivalent point scatterer with an azimuth-independent dispersive amplitude function in the spectral domain. This improves parameter estimation and scatterer classification, and it is also shown that the imaging relative error due to the approximation is less than 2% for other common image processing conditions such as tapered windowing in azimuth and when the canonical scatterer is at least ten wavelengths in size. A distinct advantage of the multipeak model over point scatterer models is that parameter estimation and scatterer classification can be performed solely in the spatial domain on a pixel-by-pixel basis and efficiently integrated within a linear SAR imaging process. To illustrate the benefits and limitations of the approach, parameter estimation and scatterer classification experiments are presented using simulated SAR data. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYNTHETIC aperture radar KW - IMAGE processing KW - PARAMETRIC modeling KW - AZIMUTH KW - PARAMETRIC downconversion KW - Apertures KW - Approximation methods KW - Azimuth KW - Distributed scatterer model KW - History KW - Imaging KW - joint frequency–polarization scatter classification KW - parametric scattering model KW - Scattering KW - Synthetic aperture radar KW - synthetic aperture radar (SAR) KW - wide-angle SAR N1 - Accession Number: 95451655; Fuller, Dane F. 1 Saville, Michael A. 1; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Source Info: Jul2013 Part 2, Vol. 51 Issue 7, p4279; Subject Term: SYNTHETIC aperture radar; Subject Term: IMAGE processing; Subject Term: PARAMETRIC modeling; Subject Term: AZIMUTH; Subject Term: PARAMETRIC downconversion; Author-Supplied Keyword: Apertures; Author-Supplied Keyword: Approximation methods; Author-Supplied Keyword: Azimuth; Author-Supplied Keyword: Distributed scatterer model; Author-Supplied Keyword: History; Author-Supplied Keyword: Imaging; Author-Supplied Keyword: joint frequency–polarization scatter classification; Author-Supplied Keyword: parametric scattering model; Author-Supplied Keyword: Scattering; Author-Supplied Keyword: Synthetic aperture radar; Author-Supplied Keyword: synthetic aperture radar (SAR); Author-Supplied Keyword: wide-angle SAR; NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 812922 One-Hour Photofinishing; Number of Pages: 13p; Document Type: Article L3 - 10.1109/TGRS.2012.2226732 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95451655&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Jared N. AU - Luckarift, Heather R. AU - Sizemore, Susan R. AU - Farrington, Karen E. AU - Lau, Carolin AU - Johnson, Glenn R. AU - Atanassov, Plamen T1 - Microbial-enzymatic-hybrid biological fuel cell with optimized growth conditions for Shewanella oneidensis DSP-10. JO - Enzyme & Microbial Technology JF - Enzyme & Microbial Technology Y1 - 2013/07/10/ VL - 53 IS - 2 M3 - Article SP - 123 EP - 127 SN - 01410229 AB - Highlights: [•] Hybrid biological fuel cell based on the oxidation of lactate by microorganisms at the anode and oxygen reduction by enzymatic cathode including initial material investigation of the anode. [•] Shewanella oneidensis DSP-10 anode and Laccase air breathing cathode. [•] Varying growth conditions of microorganisms for optimized current density and discussion of observed growth condition for biofilm formation. [•] Silica encapsulation of biomass for device development and study. [ABSTRACT FROM AUTHOR] AB - Copyright of Enzyme & Microbial Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROBIAL enzymes KW - MICROBIAL fuel cells KW - MATHEMATICAL optimization KW - MICROBIAL growth KW - SHEWANELLA oneidensis KW - BIOFILMS KW - CURRENT density (Electromagnetism) KW - LACCASE KW - Biofilm KW - Enzymatic cathode KW - Microbial fuel cell KW - Novel electrode materials KW - Shewanella oneidensis N1 - Accession Number: 89118398; Roy, Jared N. 1 Luckarift, Heather R. 2,3 Sizemore, Susan R. 2,3 Farrington, Karen E. 2,3 Lau, Carolin 1 Johnson, Glenn R. 3 Atanassov, Plamen 1; Email Address: plamen@unm.edu; Affiliation: 1: Department of Chemical & Nuclear Engineering, Center for Emerging Energy Technologies, The University of New Mexico, Albuquerque, New Mexico 87131, USA 2: Universal Technology Corporation, Dayton, Ohio 45432, USA 3: Airbase Technologies Division, Air Force Research Laboratory, Tyndall Air Force Base, Florida 32043, USA; Source Info: Jul2013, Vol. 53 Issue 2, p123; Subject Term: MICROBIAL enzymes; Subject Term: MICROBIAL fuel cells; Subject Term: MATHEMATICAL optimization; Subject Term: MICROBIAL growth; Subject Term: SHEWANELLA oneidensis; Subject Term: BIOFILMS; Subject Term: CURRENT density (Electromagnetism); Subject Term: LACCASE; Author-Supplied Keyword: Biofilm; Author-Supplied Keyword: Enzymatic cathode; Author-Supplied Keyword: Microbial fuel cell; Author-Supplied Keyword: Novel electrode materials; Author-Supplied Keyword: Shewanella oneidensis; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.enzmictec.2013.03.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89118398&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kalesnik, Frank T1 - Master of the Air: William Tunner and the Success of Military Airlift. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2013/07//Jul/Aug2013 VL - 27 IS - 4 M3 - Book Review SP - 140 EP - 142 PB - Superintendent of Documents SN - 1555385X AB - The article reviews the book "Master of the Air: William Tunner and the Success of Military Airlift" by Robert A. Slayton. KW - MILITARY airlift -- United States KW - NONFICTION KW - SLAYTON, Robert A. KW - TUNNER, William H. KW - MASTER of the Air: William Tunner & the Success of Military Airlift (Book) N1 - Accession Number: 89005449; Kalesnik, Frank 1; Affiliation: 1: Air Force Research Laboratory History Office Wright-Patterson AFB, Ohio; Source Info: Jul/Aug2013, Vol. 27 Issue 4, p140; Subject Term: MILITARY airlift -- United States; Subject Term: NONFICTION; Reviews & Products: MASTER of the Air: William Tunner & the Success of Military Airlift (Book); People: SLAYTON, Robert A.; People: TUNNER, William H.; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89005449&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jong Heon Kim AU - Chan Yik Park AU - Seung Moon Jun AU - Parker, Gregory AU - Kwang Joon Yoon AU - Dae Keun Chung AU - Il Hyun Paik AU - Jong Rok Kim T1 - Instrumented flight test of flapping micro air vehicle. JO - Aircraft Engineering & Aerospace Technology JF - Aircraft Engineering & Aerospace Technology Y1 - 2013/07// VL - 85 IS - 4 M3 - Article SP - 326 EP - 339 SN - 17488842 AB - Purpose - The purpose of this paper is to present the procedure and results from instrumented flight test performed on the flapping MAVs being developed by the authors. A test is performed using a test measurement system to obtain the real characteristics of the flapping vehicles during their flight. Design/methodology/approach - The test is performed in an indoor flight test facility, equipped with a motion capture system and tracking cameras. Spatial position data are obtained from the vehicles with retro-reflective tracking markers attached. A quantitative analysis is carried out through the investigation and interpretation of the test data for the flight performance assessment of the vehicles. Findings - The finding of the analysis addresses that the test enabled the numerical measurement of vehicles' flying performance and shows the present vehicles have combined characteristics of both birds and insects. Practical implications - The test metrics attempted in the present study are applicable to the test and evaluation of general flapping micro air vehicles. Thus, this testing method will be useful for the development of future micro air vehicle system. Originality/value - Full-scale instrumented flight test and measurement of performance parameters of flapping micro air vehicles other than visual observation are unprecedented and expected to present the guideline of systematic test and evaluation of flapping micro air vehicles. [ABSTRACT FROM AUTHOR] AB - Copyright of Aircraft Engineering & Aerospace Technology is the property of Emerald Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICRO air vehicles KW - DRONE aircraft KW - RESEARCH KW - AIRPLANES -- Flight testing KW - AERODYNAMICS -- Research KW - RECONNAISSANCE aircraft KW - Aircraft engineering KW - Flapping wing KW - Flight performance assessment KW - Flight test KW - Micro air vehicle KW - Motion KW - Motion capture tracking system KW - Testing KW - Tracking KW - Tracking marker N1 - Accession Number: 88851470; Jong Heon Kim 1; Email Address: ian0328@add.re.kr Chan Yik Park 1 Seung Moon Jun 1 Parker, Gregory 2 Kwang Joon Yoon 3 Dae Keun Chung 4 Il Hyun Paik 4 Jong Rok Kim 4; Affiliation: 1: Aeronautical Technology Directorate, Agency for Defense Development, Daejeon, South Korea 2: Air Force Research Laboratory, Air Vehicles Directorate, WPAFB, Dayton, Ohio, USA 3: Aerospace Information Engineering, Konkuk University, Seoul, South Korea 4: PGM Technology, R&D Center, Hanwha Corporation, Daejeon, South Korea; Source Info: 2013, Vol. 85 Issue 4, p326; Subject Term: MICRO air vehicles; Subject Term: DRONE aircraft; Subject Term: RESEARCH; Subject Term: AIRPLANES -- Flight testing; Subject Term: AERODYNAMICS -- Research; Subject Term: RECONNAISSANCE aircraft; Author-Supplied Keyword: Aircraft engineering; Author-Supplied Keyword: Flapping wing; Author-Supplied Keyword: Flight performance assessment; Author-Supplied Keyword: Flight test; Author-Supplied Keyword: Micro air vehicle; Author-Supplied Keyword: Motion; Author-Supplied Keyword: Motion capture tracking system; Author-Supplied Keyword: Testing; Author-Supplied Keyword: Tracking; Author-Supplied Keyword: Tracking marker; NAICS/Industry Codes: 488190 Other Support Activities for Air Transportation; Number of Pages: 14p; Document Type: Article; Full Text Word Count: 4674 L3 - 10.1108/AEAT-Nov-2011-0168 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88851470&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zabarankin, Michael AU - Murphey, Robert AU - Murray, Richard T1 - Optimization of convergence rate and stability margin of information flow in cooperative systems. JO - Automatica JF - Automatica Y1 - 2013/07// VL - 49 IS - 7 M3 - Article SP - 2030 EP - 2038 SN - 00051098 AB - Abstract: The interplay between the convergence rate and stability margin (e.g. ability to reject disturbances) for a discrete-time information flow filter in cooperative systems is analyzed. For a given communication graph, the convergence rate is defined as the absolute value of the largest nonunit characteristic root of a matrix associated with the filter. The maximal convergence rate, obtained by “tuning” the control gains, is highly correlated to the number of distinct eigenvalues of the graph Laplacian (it is 1 for the complete graph). A stability margin is introduced for multiple-input–multiple-output (MIMO) systems and is then maximized with respect to the control gains subject to a constraint on the convergence rate. The optimal stability margin as a function of the convergence rate is bounded above for any order of the filter, and the bound is attained for the complete graph. For the zero-order filter and all strongly connected communication graphs, the optimal stability margin is found analytically, whereas for the first-order filter and undirected communication graphs, it is evaluated numerically. The results demonstrate the ability to distinguish graph topologies that dominate others in their ability to reject disturbances and converge rapidly to a consensus. [Copyright &y& Elsevier] AB - Copyright of Automatica is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL optimization KW - STOCHASTIC convergence KW - STABILITY theory KW - INFORMATION theory KW - GRAPH theory KW - BOUNDS (Mathematics) KW - Cooperative navigation techniques KW - Decentralized control KW - Multi-agent systems KW - Parameter optimization KW - Time-varying systems N1 - Accession Number: 89118757; Zabarankin, Michael 1; Email Address: mzabaran@stevens.edu Murphey, Robert 2; Email Address: robert.murphey@eglin.af.mil Murray, Richard 3; Email Address: murray@cds.caltech.edu; Affiliation: 1: Department of Mathematical Sciences, Stevens Institute of Technology, Castle Point on Hudson, Hoboken, NJ 07030, United States 2: Air Force Research Laboratory, Munitions Directorate, Eglin Air Force Base, FL, United States 3: Control and Dynamical Systems 107-81, California Institute of Technology, 1200 E. California Blvd, Pasadena, CA 91125, United States; Source Info: Jul2013, Vol. 49 Issue 7, p2030; Subject Term: MATHEMATICAL optimization; Subject Term: STOCHASTIC convergence; Subject Term: STABILITY theory; Subject Term: INFORMATION theory; Subject Term: GRAPH theory; Subject Term: BOUNDS (Mathematics); Author-Supplied Keyword: Cooperative navigation techniques; Author-Supplied Keyword: Decentralized control; Author-Supplied Keyword: Multi-agent systems; Author-Supplied Keyword: Parameter optimization; Author-Supplied Keyword: Time-varying systems; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.automatica.2013.03.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89118757&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Keller, Brandon AU - Wirthlin, J. Robert T1 - Current Barriers to Successful Implementation of FIST Principles. JO - Defense Acquisition Research Journal: A Publication of the Defense Acquisition University JF - Defense Acquisition Research Journal: A Publication of the Defense Acquisition University Y1 - 2013/07// VL - 20 IS - 2 M3 - Article SP - 194 EP - 217 PB - Defense Acquisition University SN - 21568391 AB - The Fast, Inexpensive, Simple, and Tiny (FIST) framework proposes a broad set of organizational values, but provides limited guidance on practical implementation. Implementing FIST principles requires clarifying the definitions of "fast," "inexpensive," and "simple," recognizing where FIST does and does not apply. Additionally, a subset of the FIST heuristics was expanded upon to increase their usefulness for practitioners. The primary research findings are that FIST principles are less conducive for highly complex or novel systems, immature technologies, future needs, acquisitions in early development phases, or when performance is the foremost value. FIST principles were also found to be constrained by the acquisition process, the requirements process, and oversight. [ABSTRACT FROM AUTHOR] AB - Copyright of Defense Acquisition Research Journal: A Publication of the Defense Acquisition University is the property of Defense Acquisition University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANIZATIONAL ideology KW - INNOVATIONS in business KW - ORGANIZATIONAL performance KW - ORGANIZATIONAL change KW - HEURISTIC programming KW - ORGANIZATIONAL research KW - Fast KW - Heuristics KW - Inexpensive KW - Innovation KW - Oversight KW - Program Management KW - Simple KW - Tiny (FIST) N1 - Accession Number: 89737988; Keller, Brandon 1; Email Address: brandon.keller@rl.af.mil Wirthlin, J. Robert 2; Email Address: joseph.wirthlin@afit.edu; Affiliation: 1: Program Manager, Space Command and Control, Air Force Research Laboratory Information Directorate 2: Assistant professor of Engineering Systems, AFIT; Source Info: Jul2013, Vol. 20 Issue 2, p194; Subject Term: ORGANIZATIONAL ideology; Subject Term: INNOVATIONS in business; Subject Term: ORGANIZATIONAL performance; Subject Term: ORGANIZATIONAL change; Subject Term: HEURISTIC programming; Subject Term: ORGANIZATIONAL research; Author-Supplied Keyword: Fast; Author-Supplied Keyword: Heuristics; Author-Supplied Keyword: Inexpensive; Author-Supplied Keyword: Innovation; Author-Supplied Keyword: Oversight; Author-Supplied Keyword: Program Management; Author-Supplied Keyword: Simple; Author-Supplied Keyword: Tiny (FIST); Number of Pages: 24p; Illustrations: 3 Color Photographs, 1 Diagram, 2 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89737988&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Courtney, E. D. S. AU - Courtney, M. W. T1 - Studying the internal ballistics of a combustion-driven potato cannon using high-speed video. JO - European Journal of Physics JF - European Journal of Physics Y1 - 2013/07// VL - 34 IS - 4 M3 - Article SP - 915 EP - 920 SN - 01430807 AB - A potato cannon was designed to accommodate several different experimental propellants and have a transparent barrel so the movement of the projectile could be recorded on high-speed video (at 2000 frames per second). Five experimental propellants were tested: propane (C3H8), acetylene (C2H2), ethanol (C2H6O), methanol (CH4O) and butane (C4H10). The quantity of each experimental propellant was calculated to approximate a stoichometric mixture and considering the upper and lower flammability limits, which in turn were affected by the volume of the combustion chamber. Cylindrical projectiles were cut from raw potatoes so that there was an airtight fit, and each weighed 50 (± 0.5) g. For each trial, position as a function of time was determined via frameby- frame analysis. Five trials were made for each experimental propellant and the results analyzed to compute velocity and acceleration as functions of time. Additional quantities, including force on the potato and the pressure applied to the potato, were also computed. For each experimental propellant average velocity versus barrel position curves were plotted. The most effective experimental propellant was defined as that which accelerated the potato to the highest muzzle velocity. The experimental propellant acetylene performed the best on average (138.1 m s-1), followed by methanol (48.2 m s-1), butane (34.6 m s-1), ethanol (33.3 m s-1) and propane (27.9 m s-1), respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of European Journal of Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMBUSTION chambers KW - HIGH-speed video recording KW - SYSTEMS design KW - PHYSICS experiments KW - BALLISTICS KW - ACETYLENE N1 - Accession Number: 91754497; Courtney, E. D. S. 1 Courtney, M. W. 2; Email Address: Michael_Courtney@alum.mit.edu; Affiliation: 1: BTG Research, P.O. Box 62541, Colorado Springs, CO 80962, USA 2: United States Air Force Academy, 2354 Fairchild Drive, USAF Academy, CO 80840, USA; Source Info: Jul2013, Vol. 34 Issue 4, p915; Subject Term: COMBUSTION chambers; Subject Term: HIGH-speed video recording; Subject Term: SYSTEMS design; Subject Term: PHYSICS experiments; Subject Term: BALLISTICS; Subject Term: ACETYLENE; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 562210 Waste treatment and disposal; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 6p; Document Type: Article L3 - 10.1088/0143-0807/34/4/915 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91754497&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McCracken, Bonnie AU - Klineberg, Eric AU - Pickard, Brian AU - Wisner, David T1 - Flexion and extension radiographic evaluation for the clearance of potential cervical spine injures in trauma patients. JO - European Spine Journal JF - European Spine Journal Y1 - 2013/07// VL - 22 IS - 7 M3 - Article SP - 1467 EP - 1473 SN - 09406719 AB - Background: Flexion and extension radiographs are often used in the setting of trauma to clear a cervical spine injury. The utility of such tests, however, remains to be determined. We hypothesized that in patients who underwent a negative computed tomography (CT) cervical spine scan, flexion and extension radiographs did not yield useful additional information. Methods: We conducted a retrospective chart review of all patients admitted to a Level I trauma center who had a negative CT scan of the cervical spine and a subsequent cervical flexion-extension study for evaluation of potential cervical spine injury. All flexion-extension films were independently reviewed to determine adequacy as defined by C7/T1 visualization and 30° of change in the angle from flexion to extension. The independent reviews were compared to formal radiology readings and the influence of the flexion-extension studies on clinical decision making was also reviewed. Results: One thousand patients met inclusion criteria for the study. Review of the flexion-extension radiographs revealed that 80 % of the films either did not adequately demonstrate the C7/T1 junction or had less than 30° range of motion. There was one missed injury that was also missed on magnetic resonance imaging. Results of the flexion-extension views had minimal effects on clinical decision making. Conclusion: Adequate flexion extension films are difficult to obtain and are minimally helpful for clearance of the cervical spine in awake and alert trauma patients. [ABSTRACT FROM AUTHOR] AB - Copyright of European Spine Journal is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CERVICAL vertebrae -- Wounds & injuries KW - MAGNETIC resonance imaging KW - COMPUTED tomography KW - MEDICAL decision making KW - NERVOUS system -- Radiography KW - MEDICAL care KW - Cervical spine KW - Flexion extension KW - Spine clearance N1 - Accession Number: 88801011; McCracken, Bonnie 1; Email Address: bonnie.mccracken@udmc.ucdavis.edu Klineberg, Eric 2; Email Address: eric.klineberg@ucdmc.ucdavis.edu Pickard, Brian 3; Email Address: Traumamd2@gmail.com Wisner, David 4; Email Address: david.wisner@ucdmc.ucdavis.edu; Affiliation: 1: Trauma and Emergency Surgery Program, University of California Davis Medical Center, 2315 Stockton Boulevard Ste 4212 Sacramento 95817 USA 2: Department of Orthopedic Surgery, University of California Davis Medical Center, Sacramento USA 3: United States Air Force, Colorado Springs USA 4: Department of Surgery, University of California Davis Medical Center, Sacramento USA; Source Info: Jul2013, Vol. 22 Issue 7, p1467; Subject Term: CERVICAL vertebrae -- Wounds & injuries; Subject Term: MAGNETIC resonance imaging; Subject Term: COMPUTED tomography; Subject Term: MEDICAL decision making; Subject Term: NERVOUS system -- Radiography; Subject Term: MEDICAL care; Author-Supplied Keyword: Cervical spine; Author-Supplied Keyword: Flexion extension; Author-Supplied Keyword: Spine clearance; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 7p; Illustrations: 2 Diagrams; Document Type: Article L3 - 10.1007/s00586-012-2598-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88801011&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Merline, W.J. AU - Drummond, J.D. AU - Carry, B. AU - Conrad, A. AU - Tamblyn, P.M. AU - Dumas, C. AU - Kaasalainen, M. AU - Erikson, A. AU - Mottola, S. AU - Ďurech, J. AU - Rousseau, G. AU - Behrend, R. AU - Casalnuovo, G.B. AU - Chinaglia, B. AU - Christou, J.C. AU - Chapman, C.R. AU - Neyman, C. T1 - The Resolved Asteroid Program – Size, shape, and pole of (52) Europa. JO - ICARUS JF - ICARUS Y1 - 2013/07// VL - 225 IS - 1 M3 - Article SP - 794 EP - 805 SN - 00191035 AB - With the adaptive optics (AO) system on the 10m Keck-II telescope, we acquired a high quality set of 84 images at 14 epochs of asteroid (52) Europa on 2005 January 20, when it was near opposition. The epochs covered its 5.63h rotation period and, by following its changing shape and orientation on the plane of sky, we obtained its triaxial ellipsoid dimensions and spin pole location. An independent determination from images at three epochs obtained in 2007 is in good agreement with these results. By combining these two data sets, along with a single epoch data set obtained in 2003, we have derived a global fit for (52) Europa of diameters a × b × c =(379×330×249)±(16×8×10)km, yielding a volume-equivalent spherical-diameter of , and a prograde rotational pole within 7° of [RA;Dec]=[257°;+12°] in an Equatorial J2000 reference frame (Ecliptic: 255°;+35°). Using the average of all mass determinations available for (52) Europa, we derive a density of 1.5±0.4gcm−3, typical of C-type asteroids. Comparing our images with the shape model of Michalowski et al. (2004, Astron. Astrophys. 416, 353), derived from optical lightcurves, illustrates excellent agreement, although several edge features visible in the images are not rendered by the model. We therefore derived a complete 3-D description of (52) Europa’s shape using the KOALA algorithm by combining our 18 AO imaging epochs with 4 stellar occultations and 49 lightcurves. We use this 3-D shape model to assess these departures from ellipsoidal shape. Flat facets (possible giant craters) appear to be less distinct on (52) Europa than on other C-types that have been imaged in detail, (253) Mathilde and (511) Davida. We show that fewer giant craters, or smaller largest-sized craters, is consistent with its expected impact history. Overall, asteroid (52) Europa is still well modeled as a smooth triaxial ellipsoid with dimensions constrained by observations obtained over several apparitions. [ABSTRACT FROM AUTHOR] AB - Copyright of ICARUS is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASTEROIDS KW - ADAPTIVE optics KW - TELESCOPES KW - ELLIPSOIDS KW - LIGHT curves KW - EUROPA (Satellite) KW - Adaptive optics KW - Asteroids KW - Occultations KW - Photometry N1 - Accession Number: 88987785; Merline, W.J. 1; Email Address: merline@boulder.swri.edu Drummond, J.D. 2 Carry, B. 3,4 Conrad, A. 5,6 Tamblyn, P.M. 1 Dumas, C. 7 Kaasalainen, M. 8 Erikson, A. 9 Mottola, S. 9 Ďurech, J. 10 Rousseau, G. 11 Behrend, R. 11,12 Casalnuovo, G.B. 11,13 Chinaglia, B. 11,13 Christou, J.C. 14 Chapman, C.R. 1 Neyman, C. 6; Affiliation: 1: Southwest Research Institute, 1050 Walnut St., #300, Boulder, CO 80302, USA 2: Starfire Optical Range, Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117, USA 3: IMCCE, Observatoire de Paris, CNRS, 77 Av. Denfert Rochereau, 75014 Paris, France 4: European Space Astronomy Centre, ESA, P.O. Box 78, 28691 Villanueva de la Cañada, Madrid, Spain 5: Max-Planck-Institut für Astronomie, Königstuhl, 17 Heidelberg, Germany 6: W.M. Keck Observatory, 65-1120 Mamalahoa Highway, Kamuela, HI 96743, USA 7: ESO, Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile 8: Tampere University of Technology, P.O. Box 553, 33101 Tampere, Finland 9: Institute of Planetary Research, DLR, Rutherfordstrasse 2, 12489 Berlin, Germany 10: Astronomical Institute, Faculty of Mathematics and Physics, Charles University in Prague, V Holešovičkách 2, 18000 Prague, Czech Republic 11: CdR & CdL Group: Lightcurves of Minor Planets and Variable Stars, Switzerland 12: Geneva Observatory, 1290 Sauverny, Switzerland 13: Eurac Observatory, Bolzano, Italy 14: Gemini Observatory, 670 N. Aohoku Place, Hilo, HI 96720, USA; Source Info: Jul2013, Vol. 225 Issue 1, p794; Subject Term: ASTEROIDS; Subject Term: ADAPTIVE optics; Subject Term: TELESCOPES; Subject Term: ELLIPSOIDS; Subject Term: LIGHT curves; Subject Term: EUROPA (Satellite); Author-Supplied Keyword: Adaptive optics; Author-Supplied Keyword: Asteroids; Author-Supplied Keyword: Occultations; Author-Supplied Keyword: Photometry; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 453999 All other miscellaneous store retailers (except beer and wine-making supplies stores); Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.icarus.2013.01.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88987785&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yang, Chun AU - Kaplan, Lance AU - Blasch, Erik AU - Bakich, Michael T1 - Optimal Placement of Heterogeneous Sensors for Targets with Gaussian Priors. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2013/07// VL - 49 IS - 3 M3 - Article SP - 1637 EP - 1653 SN - 00189251 AB - An optimal strategy for geometric sensor placement to enhance target tracking performance is developed. Recently, a considerable amount of work has been published on optimal conditions for single-update placement of homogeneous sensors (same type and same measurement quality) in which the targets are either assumed perfectly known or the target location uncertainty is averaged out via the expected value of the determinant of the Fisher information matrix (FIM). We derive conditions for optimal placement of heterogeneous sensors based on maximization of the information matrix to be updated by the heterogeneous sensors from an arbitrary Gaussian prior characterizing the uncertainty about the initial target location. The heterogeneous sensors can be of the same or different types (ranging sensors, bearing-only sensors, or both). The sensors can also make, over several time steps, multiple independent measurements of different qualities. Placement strategies are derived and their performance is illustrated via simulation examples. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DETECTORS KW - FISHER information KW - INFORMATION theory KW - MATRICES KW - MATHEMATICAL optimization KW - Covariance matrices KW - Eigenvalues and eigenfunctions KW - Equations KW - Sensor phenomena and characterization KW - Target tracking KW - Uncertainty N1 - Accession Number: 89108600; Yang, Chun 1 Kaplan, Lance 2 Blasch, Erik 3 Bakich, Michael 3; Affiliation: 1: Sigtem Technology, Inc. 2: U.S. Army Research Laboratory 3: Air Force Research Laboratory; Source Info: Jul2013, Vol. 49 Issue 3, p1637; Subject Term: DETECTORS; Subject Term: FISHER information; Subject Term: INFORMATION theory; Subject Term: MATRICES; Subject Term: MATHEMATICAL optimization; Author-Supplied Keyword: Covariance matrices; Author-Supplied Keyword: Eigenvalues and eigenfunctions; Author-Supplied Keyword: Equations; Author-Supplied Keyword: Sensor phenomena and characterization; Author-Supplied Keyword: Target tracking; Author-Supplied Keyword: Uncertainty; Number of Pages: 17p; Document Type: Article L3 - 10.1109/TAES.2013.6558009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89108600&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Deng, Hai AU - Himed, Braham T1 - Interference Mitigation Processing for Spectrum-Sharing Between Radar and Wireless Communications Systems. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2013/07// VL - 49 IS - 3 M3 - Article SP - 1911 EP - 1919 SN - 00189251 AB - The theoretical feasibility is explored of spectrum-sharing between radar and wireless communications systems via an interference mitigation processing approach. The new approach allows radar and wireless systems to operate at the same carrier frequency if the radar possesses a multiple-input multiple-output (MIMO) structure. A novel signal processing approach is developed for coherent MIMO radar that effectively minimizes the arbitrary interferences generated by wireless systems from any direction, while operating at the same frequency using cognitive radio technology. Various theoretical aspects of the new approach are investigated, and its effectiveness is further validated through simulation. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIRELESS communication systems KW - RADAR KW - ELECTRONIC systems KW - MIMO systems KW - SIGNAL processing KW - Interference KW - MIMO radar KW - Radar antennas KW - Receiving antennas KW - Vectors KW - Wireless communication N1 - Accession Number: 89108618; Deng, Hai 1 Himed, Braham 2; Affiliation: 1: Florida International University 2: Air Force Research Laboratory; Source Info: Jul2013, Vol. 49 Issue 3, p1911; Subject Term: WIRELESS communication systems; Subject Term: RADAR; Subject Term: ELECTRONIC systems; Subject Term: MIMO systems; Subject Term: SIGNAL processing; Author-Supplied Keyword: Interference; Author-Supplied Keyword: MIMO radar; Author-Supplied Keyword: Radar antennas; Author-Supplied Keyword: Receiving antennas; Author-Supplied Keyword: Vectors; Author-Supplied Keyword: Wireless communication; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TAES.2013.6558027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89108618&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mei, Xue AU - Ling, Haibin AU - Wu, Yi AU - Blasch, Erik P. AU - Bai, Li T1 - Efficient Minimum Error Bounded Particle Resampling L1 Tracker With Occlusion Detection. JO - IEEE Transactions on Image Processing JF - IEEE Transactions on Image Processing Y1 - 2013/07// VL - 22 IS - 7 M3 - Article SP - 2661 EP - 2675 SN - 10577149 AB - Recently, sparse representation has been applied to visual tracking to find the target with the minimum reconstruction error from a target template subspace. Though effective, these L1 trackers require high computational costs due to numerous calculations for \ell1 minimization. In addition, the inherent occlusion insensitivity of the \ell1 minimization has not been fully characterized. In this paper, we propose an efficient L1 tracker, named bounded particle resampling (BPR)-L1 tracker, with a minimum error bound and occlusion detection. First, the minimum error bound is calculated from a linear least squares equation and serves as a guide for particle resampling in a particle filter (PF) framework. Most of the insignificant samples are removed before solving the computationally expensive \ell1 minimization in a two-step testing. The first step, named \tau testing, compares the sample observation likelihood to an ordered set of thresholds to remove insignificant samples without loss of resampling precision. The second step, named max testing, identifies the largest sample probability relative to the target to further remove insignificant samples without altering the tracking result of the current frame. Though sacrificing minimal precision during resampling, max testing achieves significant speed up on top of \tau testing. The BPR-L1 technique can also be beneficial to other trackers that have minimum error bounds in a PF framework, especially for trackers based on sparse representations. After the error-bound calculation, BPR-L1 performs occlusion detection by investigating the trivial coefficients in the \ell1 minimization. These coefficients, by design, contain rich information about image corruptions, including occlusion. Detected occlusions are then used to enhance the template updating. For evaluation, we conduct experiments on three video applications: biometrics (head movement, hand holding object, singers on stage), pedestrians (urban travel, hallway monitoring), and cars in traffic (wide area motion imagery, ground-mounted perspectives). The proposed BPR-L1 method demonstrates an excellent performance as compared with nine state-of-the-art trackers on eleven challenging benchmark sequences. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Image Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPRESSED sensing (Signal processing) KW - IMAGE compression KW - PATTERN recognition systems KW - IMAGE reconstruction KW - MONTE Carlo method KW - IMAGE representation (Computer graphics) KW - ERROR analysis (Mathematics) KW - DIGITAL image processing KW - compressive sensing KW - minimum error bound KW - occlusion detection KW - particle filter (PF) KW - sparse representation KW - visual tracking KW - \ell1 minimization N1 - Accession Number: 87618162; Mei, Xue 1 Ling, Haibin 2 Wu, Yi 3 Blasch, Erik P. 4 Bai, Li 5; Affiliation: 1: Toyota Research Institute, North America, Ann Arbor, MI, USA 2: Department of Computer and Information Science, and the Center for Data Analytics and Biomedical Informatics, Temple University, Philadelphia, PA, USA 3: School of Information and Control Engineering, Nanjing University of Information Science and Technology, Nanjing, China 4: U.S. Air Force Research Laboratory, Information Directorate, OR AFRL/RIEA, NY, USA 5: Department of Electrical and Computer Engineering, Temple University, Philadelphia, PA, USA; Source Info: Jul2013, Vol. 22 Issue 7, p2661; Subject Term: COMPRESSED sensing (Signal processing); Subject Term: IMAGE compression; Subject Term: PATTERN recognition systems; Subject Term: IMAGE reconstruction; Subject Term: MONTE Carlo method; Subject Term: IMAGE representation (Computer graphics); Subject Term: ERROR analysis (Mathematics); Subject Term: DIGITAL image processing; Author-Supplied Keyword: compressive sensing; Author-Supplied Keyword: minimum error bound; Author-Supplied Keyword: occlusion detection; Author-Supplied Keyword: particle filter (PF); Author-Supplied Keyword: sparse representation; Author-Supplied Keyword: visual tracking; Author-Supplied Keyword: \ell1 minimization; Number of Pages: 15p; Document Type: Article L3 - 10.1109/TIP.2013.2255301 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87618162&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shen, Yuhui AU - Leontsev, Serhiy O. AU - Turgut, Zafer AU - Lucas, Matthew S. AU - Sheets, Alexander O. AU - Horwath, John C. T1 - Effect of Soft Phase on Magnetic Properties of Bulk Sm–Co/\alpha–Fe Nanocomposite Magnets. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2013/07// VL - 49 IS - 7 M3 - Article SP - 3244 EP - 3247 SN - 00189464 AB - Bulk Sm–Co/\alpha–Fe nanocomposite magnets were fabricated by high energy ball milling and subsequent quick hot-pressing. Three different parameters were investigated which are soft phase content, type, and distribution. The effect of Fe soft phase content on the magnetic properties of the final bulk samples was examined. Increasing the Fe content significantly increased the saturation magnetization but at the cost of reduced coercivity. The optimum Fe addition for the highest maximum energy product was determined to be 15 wt% under the present processing conditions. Besides pure Fe a \ Fe49{\ {Co}}49{\ {V}}2 powder was also studied as a soft phase addition. The results indicated that FeCoV powder was more readily alloyed with the Sm–Co phase during the milling procedure. For the final bulk magnets, nanoscale Fe particles existed in Sm–Co matrix with pure Fe addition, but with \ Fe49{\ {Co}}49{\ {V}}2 addition the soft phase particles were undetectable. Two methods for adding soft phase Fe into hard phase \ SmCo5 were utilized. The investigation showed that milling Fe and \ SmCo5 together resulted in a more uniformly distributed mixture of nanoscale soft phase particles, improved squareness of the demagnetization curves of bulk nanocomposite magnets, and higher (\ BH)\max as compared to blending Fe with \ SmCo5. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SAMARIUM compounds KW - METALS -- Magnetic properties KW - NANOCOMPOSITE materials KW - MICROFABRICATION KW - BALL mills KW - COERCIVE fields (Electronics) KW - PERPENDICULAR magnetic anisotropy KW - Bulk magnets KW - coupling KW - Iron KW - Milling KW - nanocomposite KW - Perpendicular magnetic anisotropy KW - Powders KW - Saturation magnetization KW - Soft magnetic materials KW - \ Sm\ –\ Co/\alpha\ –\ Fe N1 - Accession Number: 89227945; Shen, Yuhui 1 Leontsev, Serhiy O. 1 Turgut, Zafer 2 Lucas, Matthew S. 2 Sheets, Alexander O. 2 Horwath, John C. 2; Affiliation: 1: University of Dayton, Dayton, OH, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Source Info: Jul2013, Vol. 49 Issue 7, p3244; Subject Term: SAMARIUM compounds; Subject Term: METALS -- Magnetic properties; Subject Term: NANOCOMPOSITE materials; Subject Term: MICROFABRICATION; Subject Term: BALL mills; Subject Term: COERCIVE fields (Electronics); Subject Term: PERPENDICULAR magnetic anisotropy; Author-Supplied Keyword: Bulk magnets; Author-Supplied Keyword: coupling; Author-Supplied Keyword: Iron; Author-Supplied Keyword: Milling; Author-Supplied Keyword: nanocomposite; Author-Supplied Keyword: Perpendicular magnetic anisotropy; Author-Supplied Keyword: Powders; Author-Supplied Keyword: Saturation magnetization; Author-Supplied Keyword: Soft magnetic materials; Author-Supplied Keyword: \ Sm\ –\ Co/\alpha\ –\ Fe; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TMAG.2013.2246781 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89227945&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kosai, Hiroyuki AU - Turgut, Zafer AU - Scofield, James T1 - Experimental Investigation of DC-Bias Related Core Losses in a Boost Inductor. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2013/07// VL - 49 IS - 7 M3 - Article SP - 4168 EP - 4171 SN - 00189464 AB - Soft magnetic components in electronic systems are often subjected to dc bias-flux conditions. These dc bias conditions result in distorted hysteresis loops, increased core losses, and have been shown to be independent of core material. The physical origin of these increased losses is not well understood and there is no simple model that can predict these losses without extensive measurements. Absence of a widely accepted model coupled with the complete lack of dc loss attributes on core manufacturers' data sheets result in a requirement to empirically determine loss values for specific design applications. These deficiencies have motivated our efforts to investigate dc bias dependent loss phenomenon in a Fe-based Metglas core inductor operating in a dc-dc boost converter. Since dc flux levels in the core are proportional to the controllable converter load currents, this topology is ideal to study dc-related losses. Inductor core B-H hysteresis loop characterization was accomplished as a function of switching frequency, input voltage, and load current operating conditions and parameters. In this paper, the core loss results were presented as a function of the dc bias conditions, and the results showed that the core losses increased with the pre-magnetized (Bdc) fields. As a result of our observations, we have proposed a modification to the conventional Steinmetz loss equation to include the effects of dc pre-magnetization flux in the core. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIRECT currents KW - ELECTRIC inductors KW - ELECTRONIC systems KW - MAGNETIC flux KW - HYSTERESIS loop KW - AMORPHOUS magnetic materials KW - MAGNETIC cores KW - Amorphous magnetic materials KW - Core loss KW - Current measurement KW - Hysteresis KW - inductors KW - Loss measurement KW - Magnetic cores KW - magnetic losses KW - Voltage measurement N1 - Accession Number: 89228017; Kosai, Hiroyuki 1 Turgut, Zafer 1 Scofield, James 2; Affiliation: 1: UES Inc., Dayton, OH, USA 2: Air Force Research Laboratory, Wright Patterson AFB, OH, USA; Source Info: Jul2013, Vol. 49 Issue 7, p4168; Subject Term: DIRECT currents; Subject Term: ELECTRIC inductors; Subject Term: ELECTRONIC systems; Subject Term: MAGNETIC flux; Subject Term: HYSTERESIS loop; Subject Term: AMORPHOUS magnetic materials; Subject Term: MAGNETIC cores; Author-Supplied Keyword: Amorphous magnetic materials; Author-Supplied Keyword: Core loss; Author-Supplied Keyword: Current measurement; Author-Supplied Keyword: Hysteresis; Author-Supplied Keyword: inductors; Author-Supplied Keyword: Loss measurement; Author-Supplied Keyword: Magnetic cores; Author-Supplied Keyword: magnetic losses; Author-Supplied Keyword: Voltage measurement; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TMAG.2013.2242863 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89228017&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Groschner, Catherine AU - Lan, Song AU - Wise, Adam AU - Leary, Alex AU - Lucas, Matthew S. AU - Park, Changyong AU - Laughlin, David E. AU - Diaz-Michelena, Marina AU - McHenry, Michael E. T1 - The Role of Atmosphere on Phase Transformations and Magnetic Properties of Ulvospinel. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2013/07// VL - 49 IS - 7 M3 - Article SP - 4273 EP - 4276 SN - 00189464 AB - We have synthesized the antiferromagnetic mineral ulvospinel, Fe2TiO4, in Ar to assess the role of inert atmosphere on phase formation and magnetic properties. We report the role of atmosphere on a possible phase transition and the magnetic properties of this mineral. Atmosphere dependent transformations of ulvospinel are observed with increasing temperature. Oxidation of ulvospinel to form metastable titanomaghemite is shown to occur at 300 ^\circC in atmospheric conditions. Only slight titanomaghematitzation was observed in samples transformed under pressure in in situ temperature dependent X-ray experiments. Formation of ilmenite and hematite from ulvospinel was observed under high temperature, high pressure, and low oxygen atmosphere conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Magnetic properties KW - ANTIFERROMAGNETIC materials KW - TITANIUM oxides KW - MAGNETIC transitions KW - TEMPERATURE measurements KW - HIGH temperatures KW - X-ray scattering KW - Atmosphere KW - Magnetic properties KW - Magnetization KW - Magnetosphere KW - Martian mineral KW - Minerals KW - remnant magnetization KW - Temperature KW - thermal magnetic property KW - titanomagnetite N1 - Accession Number: 89227879; Groschner, Catherine 1 Lan, Song 1 Wise, Adam 2 Leary, Alex 2 Lucas, Matthew S. 3 Park, Changyong 4 Laughlin, David E. 2 Diaz-Michelena, Marina 2 McHenry, Michael E. 2; Affiliation: 1: Materials Science and Engineering Department, Carnegie Mellon University, Pittsburgh, PA, USA 2: Materials Science and Engineering Department, Carnegie Mellon University, Pittsburgh, 3: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 4: High Pressure Collaborative Access Team, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, IL, USA; Source Info: Jul2013, Vol. 49 Issue 7, p4273; Subject Term: METALS -- Magnetic properties; Subject Term: ANTIFERROMAGNETIC materials; Subject Term: TITANIUM oxides; Subject Term: MAGNETIC transitions; Subject Term: TEMPERATURE measurements; Subject Term: HIGH temperatures; Subject Term: X-ray scattering; Author-Supplied Keyword: Atmosphere; Author-Supplied Keyword: Magnetic properties; Author-Supplied Keyword: Magnetization; Author-Supplied Keyword: Magnetosphere; Author-Supplied Keyword: Martian mineral; Author-Supplied Keyword: Minerals; Author-Supplied Keyword: remnant magnetization; Author-Supplied Keyword: Temperature; Author-Supplied Keyword: thermal magnetic property; Author-Supplied Keyword: titanomagnetite; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TMAG.2013.2250928 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89227879&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Williams, Dylan F. AU - Corson, Phillip AU - Sharma, Jahnavi AU - Krishnaswamy, Harish AU - Tai, Wei AU - George, Zacharias AU - Ricketts, David AU - Watson, Paul AU - Dacquay, Eric AU - Voinigescu, Sorin P. T1 - Calibration-Kit Design for Millimeter-Wave Silicon Integrated Circuits. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques Y1 - 2013/07// VL - 61 IS - 7 M3 - Article SP - 2685 EP - 2694 SN - 00189480 AB - We study and present design guidelines for thru-reflect-line vector-network-analyzer calibration kits used for characterizing circuits and transistors fabricated on silicon integrated circuits at millimeter-wave frequencies. We compare contact-pad designs and develop fixed-fill contacts that achieve both repeatable and low contact-pad capacitances. We develop a fill-free and mesh-free transmission line structure for the calibration kit and compare it to similar transmission lines with meshed ground plane. We also develop a gold plating process that greatly improves contact repeatability, permitting the use of redundant multiline calibrations. This in turn simplifies the development of an error analysis. Finally, we apply the technique to state-of-the-art transistor characterization, and present measured results with uncertainties. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CALIBRATION KW - MILLIMETER waves KW - SCATTERING parameters (Computer networks) KW - TRANSISTORS KW - SILICON KW - Calibration KW - measurement KW - millimeter wave KW - scattering parameters KW - silicon KW - transistor KW - uncertainty KW - vector network analyzer N1 - Accession Number: 88902985; Williams, Dylan F. 1 Corson, Phillip 2 Sharma, Jahnavi 3 Krishnaswamy, Harish 3 Tai, Wei 4 George, Zacharias 4 Ricketts, David 4 Watson, Paul 5 Dacquay, Eric 6 Voinigescu, Sorin P. 6; Affiliation: 1: National Institute of Standards and Technology, Boulder, CO, USA 2: IBM Semiconductor Research and Development Center, Essex Junction, 3: Department of Electrical Engineering, Columbia University, New York, New York, USA 4: Electrical and Computer Engineering Department, Carnegie Mellon University, Pittsburgh, PA, USA 5: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH, USA 6: Electrical and Computer Engineering Department, University of Toronto, Toronto, Canada; Source Info: Jul2013, Vol. 61 Issue 7, p2685; Subject Term: CALIBRATION; Subject Term: MILLIMETER waves; Subject Term: SCATTERING parameters (Computer networks); Subject Term: TRANSISTORS; Subject Term: SILICON; Author-Supplied Keyword: Calibration; Author-Supplied Keyword: measurement; Author-Supplied Keyword: millimeter wave; Author-Supplied Keyword: scattering parameters; Author-Supplied Keyword: silicon; Author-Supplied Keyword: transistor; Author-Supplied Keyword: uncertainty; Author-Supplied Keyword: vector network analyzer; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TMTT.2013.2265685 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88902985&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patton, Steven T. AU - Frasca, Albert J. AU - Talnagi, Joseph W. AU - Hyman, Daniel J. AU - Phillips, Benjamin S. AU - Jones, John G. AU - Vaia, Richard A. AU - Voevodin, Andrey A. T1 - Effect of Space Radiation on the Leakage Current of MEMS Insulators. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2013/07//7/1/2013 Part 2 VL - 60 IS - 4 M3 - Article SP - 3074 EP - 3083 SN - 00189499 AB - The effect of space radiation on the reliability of microelectromechanical systems (MEMS) devices is an important consideration for future upper atmosphere and space applications. MEMS capacitors with insulator materials of silicon nitride (\ Si3{\ {N}}4), silicon oxide (\ SiO2), and ultrananocrystalline diamond (UNCD) were selected for radiation and leakage current studies. Leakage current was used as a measure of insulator performance and reliability, and is suggested here as a method to detect charge trapping, which also affects reliability. UNCD capacitors were orders of magnitude leakier than \ Si3{\ {N}}4 and \ SiO2, with \ Si3{\ {N}}4 being leakier than \ SiO2. \ SiO2 devices exhibited unstable leakage current with accumulated electric field stress, and were not utilized in radiation studies. \ Si3{\ {N}}4 capacitors exhibited leakage current decay (with a time constant of 190 s) under constant voltage stress above 2 MV/cm due to charge injection from the electrodes and trapping in the insulator. \ Si3{\ {N}}4 and UNCD capacitors were more sensitive to ionizing gamma radiation than to displacement damage from fast neutrons. Both \ Si3{\ {N}}4 and UNCD devices survived total doses of radiation representative of 20–100 years in the Van Allen radiation belts with 4 mm Al equivalent shielding. Capacitor equivalent circuit and resistor capacitor (RC) circuit charging models are developed to explain leakage current behavior of \ Si3{\ {N}}4 capacitors subjected to constant voltage stress and/or irradiation. In situ monitoring of \ Si3{\ {N}}4 capacitors placed next to the nuclear reactor core did not yield any single event effects at electric field strength of 1 MV/cm with a fast neutron fluence of 2\times 10^12\ \ n/cm^2. \ Si3{\ {N}}4 MEMS capacitors appear best suited for upper atmosphere and space applications with their relatively low leakage current (low power consumption) and apparent radiation hardness. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASTROPHYSICAL radiation KW - MICROELECTROMECHANICAL systems KW - CAPACITORS KW - SILICON nitride KW - SILICON oxide KW - STRAY currents KW - ELECTRIC insulators & insulation KW - NUCLEAR reactors KW - Charge trapping KW - leakage current KW - microelectromechanical devices KW - reliability testing KW - space radiation N1 - Accession Number: 89773611; Patton, Steven T. 1 Frasca, Albert J. 2 Talnagi, Joseph W. 3 Hyman, Daniel J. 4 Phillips, Benjamin S. 5 Jones, John G. 5 Vaia, Richard A. 5 Voevodin, Andrey A. 5; Affiliation: 1: University of Dayton Research Institute, Dayton, OH, USA 2: Department of Physics, Wittenberg University, Springfield, OH, USA 3: The Ohio State University Reactor Laboratory, Columbus, 4: XCOM Wireless Inc., Signal Hill, 5: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, USA; Source Info: 7/1/2013 Part 2, Vol. 60 Issue 4, p3074; Subject Term: ASTROPHYSICAL radiation; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: CAPACITORS; Subject Term: SILICON nitride; Subject Term: SILICON oxide; Subject Term: STRAY currents; Subject Term: ELECTRIC insulators & insulation; Subject Term: NUCLEAR reactors; Author-Supplied Keyword: Charge trapping; Author-Supplied Keyword: leakage current; Author-Supplied Keyword: microelectromechanical devices; Author-Supplied Keyword: reliability testing; Author-Supplied Keyword: space radiation; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 335930 Wiring device manufacturing; NAICS/Industry Codes: 326290 Other rubber product manufacturing; NAICS/Industry Codes: 332410 Power Boiler and Heat Exchanger Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TNS.2013.2263840 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89773611&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Szmulowicz, F. AU - Haugan, H.J. AU - Elhamri, S. AU - Brown, G.J. T1 - Reprint of "Calculation of the temperature dependence of the vertical and horizontal mobilities in InAs/GaSb superlattices". JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2013/07// VL - 59 M3 - Article SP - 60 EP - 63 SN - 13504495 AB - Abstract: In order to limit cooling requirements, it is important to operate superlattice devices such as infrared detectors at the highest possible temperatures consistent with maintaining satisfactory figures of merit regarding signal and noise. One of the characteristics governing the device performance is vertical carrier mobility, although only horizontal mobilities are routinely measured. Recently, we calculated low-temperature vertical and horizontal mobilities, as limited by interface roughness scattering, for type-II InAs/GaSb superlattices as a function of SL dimensions and the degree of roughness. We found that the horizontal mobility was a double-valued function of the roughness correlation length, Λ. Here, we show that the indeterminacy of Λ can be overcome by comparing the temperature dependence of the calculated and measured mobilities; hence, we extend the calculation to higher temperatures. While the scattering mechanism itself is temperature independent, the band structure and the carrier distribution are temperature-dependent. As a function of temperature, we find that as a function of the correlation length, mobilities can increase, decrease, or remain constant. This behavior is explained on the basis of the physics of the problem. [Copyright &y& Elsevier] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFRARED detectors KW - INDIUM arsenide KW - GALLIUM antimonide KW - TEMPERATURE effect KW - SUPERLATTICES KW - PERFORMANCE evaluation KW - Electron mobility KW - InAs/GaSb KW - Infrared detector KW - Interface roughness scattering KW - Superlattice N1 - Accession Number: 89276877; Szmulowicz, F. 1,2; Email Address: frank.szmulowicz.ctr@wpafb.af.mil Haugan, H.J. 3 Elhamri, S. 4 Brown, G.J. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, WPAFB, OH 45433-7707, United States 2: U. Dayton Res. Inst., 300 College Park Ave., Dayton, OH 45469-0072, United States 3: Universal Technologies Corporation, Dayton, OH 45432-2600, United States 4: Dept. of Physics, U. Dayton, Dayton, OH 45469-2314, United States; Source Info: Jul2013, Vol. 59, p60; Subject Term: INFRARED detectors; Subject Term: INDIUM arsenide; Subject Term: GALLIUM antimonide; Subject Term: TEMPERATURE effect; Subject Term: SUPERLATTICES; Subject Term: PERFORMANCE evaluation; Author-Supplied Keyword: Electron mobility; Author-Supplied Keyword: InAs/GaSb; Author-Supplied Keyword: Infrared detector; Author-Supplied Keyword: Interface roughness scattering; Author-Supplied Keyword: Superlattice; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.infrared.2013.02.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89276877&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dickinson, Ben T. AU - Singler, John R. T1 - Distributed Load Estimation From Noisy Structural Measurements. JO - Journal of Applied Mechanics JF - Journal of Applied Mechanics Y1 - 2013/07// VL - 80 IS - 4 M3 - Article SP - 041011-1 EP - 041011-16 SN - 00218936 AB - Accurate estimates of flow induced surface forces over a body are typically difficult to achieve in an experimental setting. However, such information would provide considerable insight into fluid-structure interactions. Here, we consider distributed load estimation over structures described by linear elliptic partial differential equations (PDEs) from an array of noisy structural measurements. For this, we propose a new algorithm using Tikhonov regularization. Our approach differs from existing distributed load estimation procedures in that we pose and solve the problem at the PDE level. Although this approach requires up-front mathematical work, it also offers many advantages including the ability to: obtain an exact form of the load estimate, obtain guarantees in accuracy and convergence to the true load estimate, and utilize existing numerical methods and codes intended to solve PDEs (e.g., finite element, finite difference, or finite volume codes). We investigate the proposed algorithm with a two-dimensional membrane test problem with respect to various forms of distributed loads, measurement patterns, and measurement noise. We find that by posing the load estimation problem in a suitable Hilbert space, highly accurate distributed load and measurement noise magnitude estimates may be obtained. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Mechanics is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUID-structure interaction KW - FLUID dynamics KW - LOADS (Mechanics) KW - ELLIPTIC differential equations KW - NOISE -- Measurement N1 - Accession Number: 89497637; Dickinson, Ben T. 1; Email Address: benjamin.dickinson.1@us.af.mil Singler, John R. 2; Email Address: singlerj@mst.edu; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, 101 West Eglin Boulevard, Suite 213, Eglin AFB, FL 32542, FL 32542 2: Assistant Professor Missouri University of Science and Technology, Department of Mathematics and Statistics, 400 West 12th Street, Rolla, MO 65409; Source Info: Jul2013, Vol. 80 Issue 4, p041011-1; Subject Term: FLUID-structure interaction; Subject Term: FLUID dynamics; Subject Term: LOADS (Mechanics); Subject Term: ELLIPTIC differential equations; Subject Term: NOISE -- Measurement; Number of Pages: 16p; Document Type: Article L3 - 10.1115/1.4007794 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89497637&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tao, X. AU - Bortnik, J. AU - Albert, J.M. AU - Thorne, R.M. AU - Li, W. T1 - The importance of amplitude modulation in nonlinear interactions between electrons and large amplitude whistler waves. JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2013/07// VL - 99 M3 - Article SP - 67 EP - 72 SN - 13646826 AB - Abstract: The effects of amplitude modulation on nonlinear interactions between a parallel propagating whistler wave and electrons in a dipole field are investigated in this work using a test particle code. Here we first use the test particle simulation to validate a previous single-wave nonlinear theory. Then we adopt a simple two-wave model to represent the recently observed amplitude modulation of a whistler wave field. By varying the frequency spacing between the two waves, we investigate the effects of different modulation frequencies on the nonlinear interactions. We demonstrate that when the resonance overlap condition is satisfied, the resulting change in the electron pitch angle and energy could be very different from what has been predicted by ideal single-wave nonlinear theories. Using a previously observed probability distribution of the subpacket modulation frequency of a chorus event, we obtain the probability distribution of different types of electron response. Our results indicate that the observed subpacket distribution produces particle responses in both non-overlapping and overlapping regimes. Our results suggest that the observed amplitude modulation should be considered when quantitatively treating interactions between electrons and recently observed large amplitude whistler waves or chorus waves. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AMPLITUDE modulation KW - NONLINEAR systems KW - ELECTRONS KW - THEORY of wave motion KW - QUANTITATIVE research KW - MODULATION (Electronics) KW - Amplitude modulation KW - Nonlinear interaction KW - Phase trapping KW - Resonance overlap N1 - Accession Number: 89260005; Tao, X. 1; Email Address: xtao@atmos.ucla.edu Bortnik, J. 1; Email Address: jbortnik@atmos.ucla.edu Albert, J.M. 2; Email Address: jay.albert@us.af.mil Thorne, R.M. 1; Email Address: rmt@atmos.ucla.edu Li, W. 1; Email Address: moonli@atmos.ucla.edu; Affiliation: 1: Department of Atmospheric and Oceanic Sciences, UCLA, Los Angeles, CA, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, NM, USA; Source Info: Jul2013, Vol. 99, p67; Subject Term: AMPLITUDE modulation; Subject Term: NONLINEAR systems; Subject Term: ELECTRONS; Subject Term: THEORY of wave motion; Subject Term: QUANTITATIVE research; Subject Term: MODULATION (Electronics); Author-Supplied Keyword: Amplitude modulation; Author-Supplied Keyword: Nonlinear interaction; Author-Supplied Keyword: Phase trapping; Author-Supplied Keyword: Resonance overlap; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jastp.2012.05.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89260005&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wertz, John AU - Holycross, Casey AU - Shen, M.-H. Herman AU - Scott-Emuakpor, Onome AU - George, Tommy AU - Cross, Charles T1 - A Comparison of Constitutive Equations for the Energy-Based Lifing Method. JO - Journal of Engineering Materials & Technology JF - Journal of Engineering Materials & Technology Y1 - 2013/07// VL - 135 IS - 3 M3 - Article SP - 1 EP - 7 SN - 00944289 AB - Alternatives to quasi-static and dynamic constitutive relationships have been investigated with respect to a previously developed energy-based fatigue lifing method for various load profiles, which states: the total strain energy dissipated during both a quasi-static process and a dynamic process are equivalent and a fundamental material property. Specifically, constitutive relationships developed by Ramberg-Osgood and Halford were modified for application to the existing energy-based framework and were compared to the lifing method originally developed by Stowell. Extensive experimentation performed on Titanium 6Al-4V (Ti-64) combined with experimental data generated for Aluminum (Al) 6061-T6 at various temperatures were utilized in support of this investigation. This effort resulted in considerable improvements to the accuracy of the lifing prediction for materials with an endurance limit through application of a modified-Halford approach. Additionally, the relative equality in predictive accuracy between the modified-Stowell approach the modified-Ramberg-Osgood approach was demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering Materials & Technology is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE life (Materials science) KW - QUASISTATIC processes KW - MATERIALS -- Fatigue KW - ALUMINUM -- Fatigue KW - STRAINS & stresses (Mechanics) N1 - Accession Number: 89011823; Wertz, John 1 Holycross, Casey 1 Shen, M.-H. Herman 1; Email Address: shen.1@osu.edu Scott-Emuakpor, Onome 2 George, Tommy 2 Cross, Charles 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, Ohio State University, Columbus, OH 43210 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433; Source Info: Jul2013, Vol. 135 Issue 3, p1; Subject Term: FATIGUE life (Materials science); Subject Term: QUASISTATIC processes; Subject Term: MATERIALS -- Fatigue; Subject Term: ALUMINUM -- Fatigue; Subject Term: STRAINS & stresses (Mechanics); Number of Pages: 7p; Document Type: Article L3 - 10.1115/1.4024116 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89011823&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Granlund, K. AU - Ol, M. AU - Bernal, L. T1 - Quasi-steady response of free-to-pivot flat plates in hover. JO - Journal of Fluids & Structures JF - Journal of Fluids & Structures Y1 - 2013/07// VL - 40 M3 - Article SP - 337 EP - 355 SN - 08899746 AB - Using force measurements and flow visualization in a water tunnel, we consider motions of rigid flat plates with square edges free to pivot about the leading edge between incidence angles of ±45°. The plate's leading edge undergoes a prescribed periodic rectilinear translation. During most of the translation semi-stroke, the plate rests against its incidence limiter to produce a positive angle of attack; this reverses on the opposite semi-stroke, producing a motion akin to normal-hover with delayed rotation. Three aspect ratios are considered: a nominally 2D, or wall-to-wall plate spanning the tunnel test section, and plates of aspect ratios 3.4 and 5.5. Reynolds number effects in the range of 10000–31000 were not found to be significant. Aerodynamic force coefficient history was found to be aspect-ratio invariant, despite difference in flowfield evolution in the wake, and the force coefficients magnitude decreased for decreasing motion amplitudes. Flow visualization gives qualitative evidence for leading-edge and trailing-edge vortices, but no evidence was found of leading edge vortex stability or for contribution of vortices to aerodynamic loads, for sinusoidal or nonsinusoidal imposed motions of the plate. No evidence is found that the vortex system in the wake interacts with the plate during or after semi-stroke reversal. The main operative parameter governing aerodynamic force history is the ratio of semi-stroke amplitude to plate chord. Especially for the larger semi-stroke to chord ratios, aerodynamic response during the translational phase of motion is nearly quasi-steady, with decay in both thrust and force opposing the motion, in proceeding along each semi-stroke. The rotational phase of each semi-stroke is dominated by a loads spike as the plate approaches its incidence limiter. This spike largely disappears when the free-to-pivot plate is replaced with one with a prescribed rotational history. These findings offer favorable implications for analysis of flapping-wings using quasi-steady blade element models. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PIVOT bearings KW - FLOW visualization KW - FLOW measurement KW - WATER tunnels KW - ANGLE of attack (Aerodynamics) KW - AERODYNAMIC load KW - VORTEX motion KW - Flapping KW - Hover KW - Leading edge vortex KW - Pivoting plate N1 - Accession Number: 89034394; Granlund, K. 1 Ol, M. 1; Email Address: Michael.Ol@wpafb.af.mil Bernal, L. 2; Affiliation: 1: U.S. Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, OH 45433-7542, USA 2: University of Michigan, Department of Aerospace Engineering, Ann Arbor, MI 48105, USA; Source Info: Jul2013, Vol. 40, p337; Subject Term: PIVOT bearings; Subject Term: FLOW visualization; Subject Term: FLOW measurement; Subject Term: WATER tunnels; Subject Term: ANGLE of attack (Aerodynamics); Subject Term: AERODYNAMIC load; Subject Term: VORTEX motion; Author-Supplied Keyword: Flapping; Author-Supplied Keyword: Hover; Author-Supplied Keyword: Leading edge vortex; Author-Supplied Keyword: Pivoting plate; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.jfluidstructs.2013.02.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89034394&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Comeaux, James A. AU - Jauchem, James R. AU - Duane Cox, D. AU - Crane, Carrie C. AU - D'Andrea, John A. T1 - 40-Hz Square-Wave Stimulation Requires Less Energy to Produce Muscle Contraction: Compared with the TASER® X26 Conducted Energy Weapon 40-Hz Square-Wave Stimulation Requires Less Energy to Produce Muscle Contraction: Compared with the TASER® X26 Conducted Energy Weapon JO - Journal of Forensic Sciences (Wiley-Blackwell) JF - Journal of Forensic Sciences (Wiley-Blackwell) Y1 - 2013/07// VL - 58 IS - 4 M3 - Article SP - 1026 EP - 1031 SN - 00221198 AB - Conducted energy weapons ( CEWs) (including the Advanced TASER® X26 model produced by TASER International, Inc.) incapacitate individuals by causing muscle contractions. In this study using anesthetized swine, the potential incapacitating effect of primarily monophasic, 19- Hz voltage imposed by the commercial CEW was compared with the effect of voltages imposed by a laboratory device that created 40- Hz square waves. Forces of muscle contraction were measured with the use of strain gauges. Stimulation with 40- Hz square waves required less pulse energy than stimulation with the commercial CEW to produce similar muscle contraction. The square-pulse stimulation, at the higher repetition rate, caused a more complete tetanus at a lower energy. Use of such a simple shape of waveform may be used to make future nonlethal weapon devices more efficient. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Forensic Sciences (Wiley-Blackwell) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SQUARE waves KW - MUSCLE contraction KW - WAVE energy KW - ANESTHESIA KW - SWINE as laboratory animals KW - FORENSIC sciences KW - conducted energy weapon KW - electromuscular incapacitation KW - electronic control devices KW - forensic science KW - muscle contraction KW - Sus scrofa KW - TASER N1 - Accession Number: 88936966; Comeaux, James A. 1 Jauchem, James R. 2 Duane Cox, D. 3 Crane, Carrie C. 3 D'Andrea, John A. 3; Affiliation: 1: General Dynamics Information Technology 2: U.S. Air Force Research Laboratory, Directed Energy Bio-Effects Division 3: Directed Energy Biomedical Research Department, US Naval Medical Research Unit San Antonio; Source Info: Jul2013, Vol. 58 Issue 4, p1026; Subject Term: SQUARE waves; Subject Term: MUSCLE contraction; Subject Term: WAVE energy; Subject Term: ANESTHESIA; Subject Term: SWINE as laboratory animals; Subject Term: FORENSIC sciences; Author-Supplied Keyword: conducted energy weapon; Author-Supplied Keyword: electromuscular incapacitation; Author-Supplied Keyword: electronic control devices; Author-Supplied Keyword: forensic science; Author-Supplied Keyword: muscle contraction; Author-Supplied Keyword: Sus scrofa; Author-Supplied Keyword: TASER; Number of Pages: 6p; Document Type: Article L3 - 10.1111/1556-4029.12122 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88936966&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Esguerra, David F. AU - Hoffman, Wesley P. AU - Thies, Mark C. T1 - Fractionation of an oligomeric pyrene pitch via supercritical extraction. JO - Journal of Supercritical Fluids JF - Journal of Supercritical Fluids Y1 - 2013/07// VL - 79 M3 - Article SP - 170 EP - 176 SN - 08968446 AB - Semi-continuous, packed-column supercritical extraction was investigated for the fractionation of a polycyclic aromatic hydrocarbon (PAH) pitch into its constituent oligomers. The starting pitch had been produced by the catalytic polymerization of pure pyrene using AlCl3. Although neat supercritical toluene (T c =318.6°C; P c =41.1bar) was shown to be an effective solvent for the recovery of both monomer and dimer cuts in high purities, higher-oligomer solubilities in toluene are notoriously low. However, the addition of N-methyl-2-pyrrolidone (NMP) as a co-solvent enhanced oligomer solubilities in the extractive, supercritical-solvent phase by a factor of 3, making possible the recovery of trimer and higher oligomers. An unexpected benefit of the use of NMP is that it was found to suppress the condensation reaction between toluene and the pyrene oligomers – apparently by forming a Lewis acid–base complex with the AlCl3 catalyst – that can occur in the extraction column at temperatures above 350°C. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Supercritical Fluids is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PYRENE (Chemical) KW - SUPERCRITICAL fluid extraction KW - POLYCYCLIC aromatic hydrocarbons KW - OLIGOMERS KW - CATALYTIC polymerization KW - SOLVENTS KW - Co-solvent KW - Extraction KW - Fractionation KW - NMP KW - Oligomer KW - Polycyclic aromatic hydrocarbon (PAH) KW - Supercritical KW - Toluene N1 - Accession Number: 89302759; Esguerra, David F. 1 Hoffman, Wesley P. 2 Thies, Mark C. 1; Email Address: mcths@clemson.edu; Affiliation: 1: Department of Chemical and Biomolecular Engineering, Center for Advanced Engineering Fibers and Films, Clemson University, Clemson, SC 29634-0909, USA 2: Air Force Research Laboratory, AFRL/RQRC, 10 E. Saturn Blvd., Edwards, CA 93524-7680, USA; Source Info: Jul2013, Vol. 79, p170; Subject Term: PYRENE (Chemical); Subject Term: SUPERCRITICAL fluid extraction; Subject Term: POLYCYCLIC aromatic hydrocarbons; Subject Term: OLIGOMERS; Subject Term: CATALYTIC polymerization; Subject Term: SOLVENTS; Author-Supplied Keyword: Co-solvent; Author-Supplied Keyword: Extraction; Author-Supplied Keyword: Fractionation; Author-Supplied Keyword: NMP; Author-Supplied Keyword: Oligomer; Author-Supplied Keyword: Polycyclic aromatic hydrocarbon (PAH); Author-Supplied Keyword: Supercritical; Author-Supplied Keyword: Toluene; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.supflu.2012.11.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89302759&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - CREIGHTON, GLENN A. AU - HART, ROBERT E. AU - CUNNINGHAM, PHILIP T1 - A Spatial Filter Approach to Evaluating the Role of Convection on the Evolution of a Mesoscale Vortex. JO - Journal of the Atmospheric Sciences JF - Journal of the Atmospheric Sciences Y1 - 2013/07// VL - 70 IS - 7 M3 - Article SP - 1954 EP - 1976 PB - American Meteorological Society SN - 00224928 AB - A new spatial filter is proposed that exploits a spectral gap in power between the convective scale and the system ("vortex") scale during tropical cyclone (TC) genesis simulations. Using this spatial separation, this study analyzes idealized three-dimensional numerical simulations of deep moist convection in the presence of a symmetric midlevel vortex to quantify and understand the energy cascade between the objectively defined convective scale and system scale during the early stages of tropical cyclogenesis. The simulations neglect surface momentum, heat, and moisture fluxes to focus on generation and enhancement of vorticity within the interior to more completely close off the energy budget and to be consistent for comparison with prior benchmark studies of modeled TC genesis. The primary contribution to system-scale intensification comes from the convergence of convective-scale vorticity that is supplied by vortical hot towers (VHTs). They contribute more than the convergence of system-scale vorticity to the spinup of vorticity in these simulations by an order of magnitude. Analysis of the change of circulation with time shows an initial strengthening of the surface vortex, closely followed by a growth of the mid- to upper-level circulation. This evolution precludes any possibility of a stratiform precipitation-induced top-down mechanism as the primary contributor to system-scale spinup in this simulation. Instead, an upscale cascade of rotational kinetic energy during vortex mergers is responsible for spinup of the simulated mesoscale vortex. The spatial filter employed herein offers an alternative approach to the traditional symmetry-asymmetry paradigm, acknowledges the highly asymmetric evolution of the system-scale vortex itself, and may prove useful to future studies on TC genesis. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Atmospheric Sciences is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPATIAL filters KW - LIGHT filters KW - CONVECTION (Meteorology) KW - RESEARCH KW - ATMOSPHERIC circulation KW - MESOSCALE convective complexes N1 - Accession Number: 89423132; CREIGHTON, GLENN A. 1; Email Address: glenn.creighton@offutt.af.mil HART, ROBERT E. 2 CUNNINGHAM, PHILIP 3; Affiliation: 1: Air Force Weather Agency, United States Air Force, Offutt Air Force Base, Nebraska 2: Department of Earth, Ocean, and Atmospheric Science, Florida State University, Tallahassee, Florida 3: PDL Solutions (Europe) Ltd, Hexham, United Kingdom; Source Info: Jul2013, Vol. 70 Issue 7, p1954; Subject Term: SPATIAL filters; Subject Term: LIGHT filters; Subject Term: CONVECTION (Meteorology); Subject Term: RESEARCH; Subject Term: ATMOSPHERIC circulation; Subject Term: MESOSCALE convective complexes; Number of Pages: 23p; Illustrations: 1 Color Photograph, 2 Charts, 17 Graphs; Document Type: Article L3 - 10.1175/JAS-D-12-0186.1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89423132&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chaudhari, Mrunalkumar AU - Tiley, Jaimie AU - Banerjee, Rajarshi AU - Jincheng Du T1 - Site preference and interaction energies of Co and Cr in gamma prime Ni3Al: a first-principles study. JO - Modelling & Simulation in Materials Science & Engineering JF - Modelling & Simulation in Materials Science & Engineering Y1 - 2013/07// VL - 21 IS - 5 M3 - Article SP - 1 EP - 20 SN - 09650393 AB - Nickel-based superalloys are critical for aerospace and power applications due to excellent high-temperature properties. These high-temperature properties are attributed to the coherently precipitated gamma prime phase in the gamma matrix. The segregation of alloying elements between the matrix and thegamma prime phase drives precipitate misfit strains and impacts material strength. This study aims at understanding the site preference of Co and Cr within the ordered gamma prime phase. The study also calculates the interaction energy between alloying additions within the ternary systems Ni-Al-Cr and Ni-Al-Co, and the quaternary system Ni-Al-Cr-Co. It is found that Co has mixed substitution behavior between the Al and Ni sites in the gamma prime phase. The results from the Ni-Al-Cr ternary system show that two Cr atoms prefer being close to each other, with the most stable configuration of the first nearest neighbors of the Al-Al site. The interaction energies calculated from the Ni-Al-Co system showthat the initial distance between two Co atoms will decide whether the two Co atoms prefer Ni-Ni or Ni-Al configuration. The study on the quaternary system Ni-Al-Cr-Co reveals that the initial configuration of Cr and Co atoms will affect the final most stable configuration. The results are found to be consistent with our previous findings. [ABSTRACT FROM AUTHOR] AB - Copyright of Modelling & Simulation in Materials Science & Engineering is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT resistant alloys KW - AEROSPACE industries KW - STRAINS & stresses (Mechanics) KW - TERNARY system KW - NICKEL alloys KW - STRENGTH of materials N1 - Accession Number: 90149602; Chaudhari, Mrunalkumar 1 Tiley, Jaimie 2 Banerjee, Rajarshi 1 Jincheng Du 1; Email Address: Jincheng.du@unt.edu; Affiliation: 1: Department of Materials Science and Engineering, University of North Texas, Denton, TX, USA 2: Air Force Research Laboratory, Wright Patterson AFB, OH, USA; Source Info: 2013, Vol. 21 Issue 5, p1; Subject Term: HEAT resistant alloys; Subject Term: AEROSPACE industries; Subject Term: STRAINS & stresses (Mechanics); Subject Term: TERNARY system; Subject Term: NICKEL alloys; Subject Term: STRENGTH of materials; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing; NAICS/Industry Codes: 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 20p; Document Type: Article L3 - 10.1088/0965-0393/21/5/055006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90149602&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Duan, Xiaofeng F. AU - Burggraf, Larry W. AU - Lingyu Huang T1 - Searching for Stable SinCn Clusters: Combination of Stochastic Potential Surface Search and Pseudopotential Plane-Wave Car-Parinello Simulated Annealing Simulations. JO - Molecules JF - Molecules Y1 - 2013/07// VL - 18 IS - 7 M3 - Article SP - 8591 EP - 8606 SN - 14203049 AB - To find low energy SinCn structures out of hundreds to thousands of isomers we have developed a general method to search for stable isomeric structures that combines Stochastic Potential Surface Search and Pseudopotential Plane-Wave Density Functional Theory Car-Parinello Molecular Dynamics simulated annealing (PSPW-CPMD-SA). We enhanced the Sunders stochastic search method to generate random cluster structures used as seed structures for PSPW-CPMD-SA simulations. This method ensures that each SA simulation samples a different potential surface region to find the regional minimum structure. By iterations of this automated, parallel process on a high performance computer we located hundreds to more than a thousand stable isomers for each SinCn cluster. Among these, five to 10 of the lowest energy isomers were further optimized using B3LYP/cc-pVTZ method. We applied this method to SinCn (n = 4-12) clusters and found the lowest energy structures, most not previously reported. By analyzing the bonding patterns of low energy structures of each SinCn cluster, we observed that carbon segregations tend to form condensed conjugated rings while Si connects to unsaturated bonds at the periphery of the carbon segregation as single atoms or clusters when n is small and when n is large a silicon network spans over the carbon segregation region. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecules is the property of MDPI Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PSEUDOPOTENTIAL method KW - STOCHASTIC analysis KW - ISOMERS KW - CARBON KW - ATOMS KW - carbon/silicon segregation KW - DFT optimization KW - SinCn cluster KW - simulated annealing simulation KW - stochastic potential surface search N1 - Accession Number: 89429015; Duan, Xiaofeng F. 1,2 Burggraf, Larry W. 2 Lingyu Huang 3; Email Address: larry.burggraf@afit.edu.; Affiliation: 1: Air Force Research Laboratory DoD Supercomputer Resource Center, Wright-Patterson Air Force Base, OH 45433, USA 2: Air Force Institute of Technology, Wright-Patterson Air Force Base, OH 45433, USA 3: College of Agriculture, Food Science and Sustainable Systems, Kentucky State University, Frankfort, KY 40601, USA; Source Info: Jul2013, Vol. 18 Issue 7, p8591; Subject Term: PSEUDOPOTENTIAL method; Subject Term: STOCHASTIC analysis; Subject Term: ISOMERS; Subject Term: CARBON; Subject Term: ATOMS; Author-Supplied Keyword: carbon/silicon segregation; Author-Supplied Keyword: DFT optimization; Author-Supplied Keyword: SinCn cluster; Author-Supplied Keyword: simulated annealing simulation; Author-Supplied Keyword: stochastic potential surface search; Number of Pages: 16p; Illustrations: 10 Diagrams; Document Type: Article L3 - 10.3390/molecules18078591 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89429015&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - PERLOVSKY, L. I. AU - ILIN, R. T1 - CWW, LANGUAGE, AND THINKING. JO - New Mathematics & Natural Computation JF - New Mathematics & Natural Computation Y1 - 2013/07// VL - 9 IS - 2 M3 - Article SP - 183 EP - 205 SN - 17930057 AB - Computing with words, CWW, is considered in the context of natural language functioning, unifying language with thinking. Previous attempts at modeling natural languages as well as thinking processes in artificial intelligence have met with computational complexity. To overcome computational complexity we use dynamic logic (DL), an extension of fuzzy logic describing fuzzy to crisp transitions. We suggest a possible architecture motivated by mathematical and neural considerations. We discuss the reasons why CWW has to be modeled jointly with thinking and propose an architecture consistent with brain neural structure and with a wealth of psychological knowledge. The proposed architecture implies the existence of relationships between languages and cultures. We discuss these implications for further evolution of English and Chinese cultures, and for cultural effects of interactions between natural languages and CWW. [ABSTRACT FROM AUTHOR] AB - Copyright of New Mathematics & Natural Computation is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THOUGHT & thinking KW - FUZZY logic KW - NATURAL language processing (Computer science) KW - LANGUAGE & culture KW - COMPUTATIONAL complexity KW - PROGRAMMING languages (Electronic computers) KW - complexity KW - computing with words (CWW) KW - dynamic logic (DL) KW - emotions KW - evolution of languages KW - fuzzy logic KW - Language KW - language and culture KW - thinking N1 - Accession Number: 89913978; PERLOVSKY, L. I. 1; Email Address: leonid@seas.harvard.edu ILIN, R. 1; Email Address: Roman.Ilin@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, USA; Source Info: Jul2013, Vol. 9 Issue 2, p183; Subject Term: THOUGHT & thinking; Subject Term: FUZZY logic; Subject Term: NATURAL language processing (Computer science); Subject Term: LANGUAGE & culture; Subject Term: COMPUTATIONAL complexity; Subject Term: PROGRAMMING languages (Electronic computers); Author-Supplied Keyword: complexity; Author-Supplied Keyword: computing with words (CWW); Author-Supplied Keyword: dynamic logic (DL); Author-Supplied Keyword: emotions; Author-Supplied Keyword: evolution of languages; Author-Supplied Keyword: fuzzy logic; Author-Supplied Keyword: Language; Author-Supplied Keyword: language and culture; Author-Supplied Keyword: thinking; NAICS/Industry Codes: 511210 Software Publishers; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); Number of Pages: 23p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1142/S1793005713400036 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89913978&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brennan, Terry J. AU - Wittich III, Donald J. T1 - Statistical analysis of Airborne Aero-Optical Laboratory optical wavefront measurements. JO - Optical Engineering JF - Optical Engineering Y1 - 2013/07// VL - 52 IS - 7 M3 - Article SP - 1 EP - 10 SN - 00913286 AB - The Airborne Aero-Optical Laboratory has produced a large database of aero-optical measurements with a high-speed, high-resolution Shack Hartmann wavefront sensor. The data have been collected over a wide range of flight conditions. An analysis of the statistical characteristics of the subsonic and early transonic data is performed to assess the adequacy of the spatial and temporal resolution of the data. Sample rate requirements for a minimum variance phase estimator are also explored. The techniques employed are validated by application to measurements of optical atmospheric turbulence where results can be anticipated based on established Kolmogorov statistics. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL laboratories KW - WAVEFRONTS (Optics) KW - RESEARCH KW - DETECTORS KW - TURBULENCE KW - KOLMOGOROV complexity KW - adaptive optics KW - aero-optic flow KW - Airborne Aero-Optical Laboratory KW - optical phase estimation KW - optical turbulence N1 - Accession Number: 92988716; Brennan, Terry J. 1; Email Address: tbrennan@tosc.com Wittich III, Donald J. 2; Affiliation: 1: Optical Sciences Company, Anaheim, California 92806 2: Air Force Research Laboratory, Kirtland AFB, New Mexico 87115; Source Info: Jul2013, Vol. 52 Issue 7, p1; Subject Term: OPTICAL laboratories; Subject Term: WAVEFRONTS (Optics); Subject Term: RESEARCH; Subject Term: DETECTORS; Subject Term: TURBULENCE; Subject Term: KOLMOGOROV complexity; Author-Supplied Keyword: adaptive optics; Author-Supplied Keyword: aero-optic flow; Author-Supplied Keyword: Airborne Aero-Optical Laboratory; Author-Supplied Keyword: optical phase estimation; Author-Supplied Keyword: optical turbulence; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 10p; Document Type: Article L3 - 10.1117/1.OE.52.7.071416 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92988716&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Graul, J. S. AU - Ketsdever, A. D. AU - Andersen, G. P. AU - Lilly, T. C. T1 - Note: External multipass optical trap for counterpropagating pulsed laser applications. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2013/07// VL - 84 IS - 7 M3 - Article SP - 076102 EP - 076102-3 PB - American Institute of Physics SN - 00346748 AB - Pulses from a 12 mJ, frequency doubled, 5 ns FWHM, pulsed Nd:YAG laser were split and injected into opposing sides of a symmetric 2.44 m (96 in.) optical ring trap. Using a Pockels cell, the counterpropagating pulses were 'locked' into the trap for ≥50 round trips. This optical trap has potential applications ranging from established cavity processes, e.g., laser-based absorption spectroscopy and x-ray production, to new processes such as non-resonant optical lattice gas heating and time-resolved coherent Rayleigh-Brillouin scattering diagnostic studies. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRUM analysis KW - SPECTROMETRY KW - X-rays KW - SCATTERING (Physics) KW - OPTICAL lattices KW - OPTOELECTRONICS N1 - Accession Number: 89470454; Graul, J. S. 1 Ketsdever, A. D. 2 Andersen, G. P. 3 Lilly, T. C. 4; Affiliation: 1: ERC Inc., Edwards AFB, California 93524, 2: Air Force Research Laboratory, Edwards AFB, California 93524, 3: United States Air Force Academy, Colorado Springs, Colorado 80840, 4: University of Colorado, Colorado Springs, Colorado 80918,; Source Info: Jul2013, Vol. 84 Issue 7, p076102; Subject Term: SPECTRUM analysis; Subject Term: SPECTROMETRY; Subject Term: X-rays; Subject Term: SCATTERING (Physics); Subject Term: OPTICAL lattices; Subject Term: OPTOELECTRONICS; Number of Pages: 1p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.4813741 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89470454&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, C. AU - Arge, C. AU - Odstrčil, D. AU - Millward, G. AU - Pizzo, V. AU - Quinn, J. AU - Henney, C. T1 - Ensemble Modeling of CME Propagation. JO - Solar Physics JF - Solar Physics Y1 - 2013/07// VL - 285 IS - 1/2 M3 - Article SP - 349 EP - 368 PB - Springer Science & Business Media B.V. SN - 00380938 AB - The current progression toward solar maximum provides a unique opportunity to use multi-perspective spacecraft observations together with numerical models to better understand the evolution and propagation of coronal mass ejections (CMEs). Of interest to both the scientific and forecasting communities are the Earth-directed 'halo' CMEs, since they typically produce the most geoeffective events. However, determining the actual initial geometries of halo CMEs is a challenge due to the plane-of-sky projection effects. Thus the recent 15 February 2011 halo CME event has been selected for this study. During this event the Solar TErrestrial RElations Observatory (STEREO) A and B spacecraft were fortuitously located ∼ 90° away from the Sun-Earth line such that the CME was viewed as a limb event from these two spacecraft, thereby providing a more reliable constraint on the initial CME geometry. These multi-perspective observations were utilized to provide a simple geometrical description that assumes a cone shape for a CME to calculate its angular width and central position. The event was simulated using the coupled Wang-Sheeley-Arge (WSA)-Enlil 3D numerical solar corona-solar wind model. Daily updated global photospheric magnetic field maps were used to drive the background solar wind. To improve our modeling techniques, the sensitivity of the modeled CME arrival times to the initial input CME geometry was assessed by creating an ensemble of numerical simulations based on multiple sets of cone parameters for this event. It was found that the accuracy of the modeled arrival times not only depends on the initial input CME geometry, but also on the accuracy of the modeled solar wind background, which is driven by the input maps of the photospheric field. To improve the modeling of the background solar wind, the recently developed data-assimilated magnetic field synoptic maps produced by the Air Force Data Assimilative Photospheric flux Transport (ADAPT) model were used. The ADAPT maps provide a more instantaneous snapshot of the global photospheric field distribution than that provided by traditional daily updated synoptic maps. Using ADAPT to drive the background solar wind, an ensemble set of eight different CME arrival times was generated, where the spread in the predictions was ∼ 13 hours and was nearly centered on the observed CME shock arrival time. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORONAL mass ejections KW - SPACE vehicles KW - SOLAR wind KW - SOLAR photosphere KW - COSMIC magnetic fields KW - MATHEMATICAL models KW - CONSTRAINTS (Physics) KW - SOLAR-terrestrial physics KW - Coronal mass ejections, modeling KW - Solar wind, modeling KW - Solar wind, observations N1 - Accession Number: 87390896; Lee, C. 1; Email Address: cleevantilborg@gmail.com Arge, C. 1 Odstrčil, D. 2 Millward, G. 3 Pizzo, V. 3 Quinn, J. 1 Henney, C. 1; Affiliation: 1: Air Force Research Laboratory/Space Vehicles Directorate, Kirtland Air Force Base USA 2: George Mason University, Fairfax USA 3: NOAA Space Weather Prediction Center, Boulder USA; Source Info: Jul2013, Vol. 285 Issue 1/2, p349; Subject Term: CORONAL mass ejections; Subject Term: SPACE vehicles; Subject Term: SOLAR wind; Subject Term: SOLAR photosphere; Subject Term: COSMIC magnetic fields; Subject Term: MATHEMATICAL models; Subject Term: CONSTRAINTS (Physics); Subject Term: SOLAR-terrestrial physics; Author-Supplied Keyword: Coronal mass ejections, modeling; Author-Supplied Keyword: Solar wind, modeling; Author-Supplied Keyword: Solar wind, observations; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 20p; Document Type: Article L3 - 10.1007/s11207-012-9980-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87390896&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanford, Bret AU - Beran, Philip T1 - Aerothermoelastic topology optimization with flutter and buckling metrics. JO - Structural & Multidisciplinary Optimization JF - Structural & Multidisciplinary Optimization Y1 - 2013/07// VL - 48 IS - 1 M3 - Article SP - 149 EP - 171 SN - 1615147X AB - This work develops a framework for SIMP-based topology optimization of a metallic panel structure subjected to design-dependent aerodynamic, inertial, elastic, and thermal loads. Multi-physics eigenvalue-based design metrics such as thermal buckling and dynamic flutter are derived, along with their adjoint-based design derivatives. Locating the flutter point (Hopf-bifurcation) in a precise and efficient manner is a particular challenge, as is outfitting the optimization problem with sufficient constraints such that the critical flutter mode does not switch during the design process. Results are presented for flutter-optimal topologies of an unheated panel, thermal buckling-optimal topologies, and flutter-optimality of a heated panel (where the latter case presents a topological compromise between the former two). The effect of various constraint boundaries, temperature gradients, and (for the flutter of the heated panel) thermal load magnitude are assessed. Off-design flutter and thermal buckling boundaries are given as well. [ABSTRACT FROM AUTHOR] AB - Copyright of Structural & Multidisciplinary Optimization is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROTHERMODYNAMICS KW - BUCKLING (Mechanics) KW - GLOBAL optimization KW - TOPOLOGY KW - AERODYNAMIC load KW - SYSTEMS design KW - Aerothermoelasticity KW - Panel flutter KW - Topology optimization N1 - Accession Number: 88350159; Stanford, Bret 1; Email Address: bretkennedystanford@gmail.com Beran, Philip 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA; Source Info: Jul2013, Vol. 48 Issue 1, p149; Subject Term: AEROTHERMODYNAMICS; Subject Term: BUCKLING (Mechanics); Subject Term: GLOBAL optimization; Subject Term: TOPOLOGY; Subject Term: AERODYNAMIC load; Subject Term: SYSTEMS design; Author-Supplied Keyword: Aerothermoelasticity; Author-Supplied Keyword: Panel flutter; Author-Supplied Keyword: Topology optimization; Number of Pages: 23p; Document Type: Article L3 - 10.1007/s00158-013-0885-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88350159&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Phillips, Chandler A. AU - Kinsler, Rachel E. AU - Repperger, Daniel W. AU - Mandal, Jayishnu AU - Neidhard-Doll, Amy T. AU - Kender, David M. T1 - A human–machine interaction strategy function: information throughput and weighting with application to Multiple-Attribute-Task-Battery. JO - Theoretical Issues in Ergonomics Science JF - Theoretical Issues in Ergonomics Science Y1 - 2013/07// VL - 14 IS - 4 M3 - Article SP - 379 EP - 401 SN - 1463922X AB - The Multiple-Attribute-Task-Battery (MATB) displays five independent and concurrent tasks to which a human operator (HO) responds. MATB records the task-specific responses and so provides data on human performance. A general strategy function based on five task-specific strategy cases is described to characterise the human–MATB interaction. A prior report evaluated an implicit strategy group of 32 HOs for whom no strategy-important information was provided (i.e. all tasks are equally important). However, a specified strategy function did not characterise the group. This report evaluates an explicit strategy group of 35 HOs for whom the actual weighting of the five tasks was provided. The general strategy function is applied to both groups and characterises two different strategies. With respect to ergonomic theory and practice, a generalised strategy function is defined and applied to the human–MATB interaction that characterises two different strategy types and also provides a metric for MATB system complexity across five independent tasks. [ABSTRACT FROM PUBLISHER] AB - Copyright of Theoretical Issues in Ergonomics Science is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANALYSIS of variance KW - COMPUTER assisted instruction KW - MATHEMATICAL models KW - STATISTICS KW - THEORY KW - DATA analysis KW - TASK performance KW - THEORY & practice KW - DATA analysis -- Software KW - DESCRIPTIVE statistics KW - human–machine interaction KW - information processing KW - multiple tasking KW - Multiple-Attribute-Task-Battery KW - strategy function N1 - Accession Number: 88212582; Phillips, Chandler A. 1; Email Address: chandler.phillips@wright.edu Kinsler, Rachel E. 1 Repperger, Daniel W. 2 Mandal, Jayishnu 1 Neidhard-Doll, Amy T. 1 Kender, David M. 1; Affiliation: 1: Department of Biomedical , Industrial and Human Factors Engineering, Wright State University , Dayton , OH 45435 , USA 2: Air Force Research Laboratory , AFRL/HECP, Wright-Patterson A.F.B. , Dayton , OH 45433 , USA; Source Info: Jul2013, Vol. 14 Issue 4, p379; Subject Term: ANALYSIS of variance; Subject Term: COMPUTER assisted instruction; Subject Term: MATHEMATICAL models; Subject Term: STATISTICS; Subject Term: THEORY; Subject Term: DATA analysis; Subject Term: TASK performance; Subject Term: THEORY & practice; Subject Term: DATA analysis -- Software; Subject Term: DESCRIPTIVE statistics; Author-Supplied Keyword: human–machine interaction; Author-Supplied Keyword: information processing; Author-Supplied Keyword: multiple tasking; Author-Supplied Keyword: Multiple-Attribute-Task-Battery; Author-Supplied Keyword: strategy function; Number of Pages: 23p; Document Type: Article L3 - 10.1080/1463922X.2011.637245 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88212582&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shenogin, S. AU - Gengler, J. AU - Roy, A. AU - Voevodin, A.A. AU - Muratore, C. T1 - Molecular dynamics studies of thermal boundary resistance at carbon–metal interfaces. JO - Scripta Materialia JF - Scripta Materialia Y1 - 2013/06/30/ VL - 69 IS - 1 M3 - Article SP - 100 EP - 103 SN - 13596462 AB - Molecular dynamics is used to study the interfacial thermal conductance between graphitic structures and metals. It is shown that with different metals, the conductance can vary by ∼4-fold, allowing the control of thermal transport in nanocomposites and nanoelectronic devices. The experimental values of conductance are higher by 10–20MWm−2 K−1 compared to simulations. We suggest that in addition to lattice vibrations, an electromagnetic coupling between Johnson–Nyquist electric currents in the metal and graphite may contribute to the interfacial thermal conductance. [ABSTRACT FROM AUTHOR] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERFACIAL resistance KW - MOLECULAR dynamics KW - ORGANOMETALLIC chemistry KW - CARBON KW - GRAPHITE KW - ELECTROMAGNETIC couplings KW - METALS -- Thermomechanical properties KW - Interfacial thermal conductance KW - Molecular dynamics KW - Nanocomposites KW - Thermal resistance N1 - Accession Number: 89217931; Shenogin, S. 1,2; Email Address: sergei.shenogin@wpafb.af.mil Gengler, J. 1,3 Roy, A. 1 Voevodin, A.A. 1 Muratore, C. 1,4; Affiliation: 1: Thermal Sciences and Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: University of Dayton Research Institute, Dayton, OH 45469, USA 3: Spectral Energies LLC, Dayton, OH 45431, USA 4: Department of Chemical and Materials Engineering, University of Dayton, Dayton, OH 45469, USA; Source Info: Jun2013, Vol. 69 Issue 1, p100; Subject Term: INTERFACIAL resistance; Subject Term: MOLECULAR dynamics; Subject Term: ORGANOMETALLIC chemistry; Subject Term: CARBON; Subject Term: GRAPHITE; Subject Term: ELECTROMAGNETIC couplings; Subject Term: METALS -- Thermomechanical properties; Author-Supplied Keyword: Interfacial thermal conductance; Author-Supplied Keyword: Molecular dynamics; Author-Supplied Keyword: Nanocomposites; Author-Supplied Keyword: Thermal resistance; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2013.02.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89217931&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sawyer, Jordan AU - Wu, Yue AU - Zhang, Zhili AU - Adams, Steven F. T1 - O2 rotational temperature measurements in an atmospheric air microdischarge by radar resonance-enhanced multiphoton ionization. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/06/21/ VL - 113 IS - 23 M3 - Article SP - 233304 PB - American Institute of Physics SN - 00218979 AB - Nonintrusive spatially resolved rotational temperature measurements in an atmospheric air microdischarge are presented. The measurements were based on coherent microwave Rayleigh scattering (Radar) from resonance-enhanced multiphoton ionization of molecular oxygen. The open air DC microdischarge source operated in a stable 'normal-glow' mode and pin-to-pin electrodes spaced 1.3 mm apart. The second harmonic of a tunable dye laser beam was focused between the two electrodes and scanned between 286 and 288 nm. Coherent microwave Rayleigh scattering was used to collect the two-photon rotational spectra of O2 at C3Π(v = 2)←X3Σ(v′ = 0) transitions. The Boltzmann plots from analyses of the O2 rotational lines determined local rotational temperatures at various axial locations between the electrodes. The molecular oxygen rotational temperature varied from ∼1150 K to ∼1350 K within the discharge area. The measurements had an accuracy of ∼±50 K. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXYGEN KW - TEMPERATURE measurements KW - MULTIPHOTON ionization KW - RAYLEIGH scattering KW - MOLECULES KW - COHERENT scattering KW - BOLTZMANN'S equation N1 - Accession Number: 88345451; Sawyer, Jordan 1 Wu, Yue 1 Zhang, Zhili 1 Adams, Steven F. 2; Affiliation: 1: Department of Mechanical, Aerospace and Biomedical Engineering, University of Tennessee, Knoxville Tennessee 37996, 2: Air Force Research Laboratory (AFRL/RQQE), Wright-Patterson AFB, Ohio 45433-7919,; Source Info: Jun2013, Vol. 113 Issue 23, p233304; Subject Term: OXYGEN; Subject Term: TEMPERATURE measurements; Subject Term: MULTIPHOTON ionization; Subject Term: RAYLEIGH scattering; Subject Term: MOLECULES; Subject Term: COHERENT scattering; Subject Term: BOLTZMANN'S equation; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.4811533 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88345451&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bray, K. R. AU - Jiao, C. Q. AU - DeCerbo, J. N. T1 - Nucleation and growth of Nb nanoclusters during plasma gas condensation. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/06/21/ VL - 113 IS - 23 M3 - Article SP - 234307 PB - American Institute of Physics SN - 00218979 AB - Niobium nanoclusters were produced using a plasma gas condensation process. The influence of gas flow rate, aggregation length, and source current on the nanocluster nucleation and growth were analyzed. Nanoclusters with an average diameter from 4 nm to 10 nm were produced. Cluster size and concentration were tuned by controlling the process inputs. The effects of each parameter on the nucleation zone, growth length, and residence time was examined. The parameters do not affect the cluster formation and growth independently; their influence on cluster formation can be either cumulative or competing. Examining the nucleation and growth over a wide combination of parameters provided insight into their interactions and the impact on the growth process. These results provide the opportunity for a broader understanding into the nucleation and growth of nanoclusters and some insights into how process parameters interact during deposition. This knowledge will enhance the ability to create nanoclusters with desired size dispersions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NIOBIUM KW - GAS flow KW - CONDENSATION KW - NUCLEATION KW - SEDIMENTATION & deposition N1 - Accession Number: 88345443; Bray, K. R. 1 Jiao, C. Q. 1 DeCerbo, J. N. 2; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Rd, Dayton, Ohio 45432, 2: Air Force Research Laboratory, AFRL/RQQE, 1950 Fifth St., WPAFB, Ohio 45433,; Source Info: Jun2013, Vol. 113 Issue 23, p234307; Subject Term: NIOBIUM; Subject Term: GAS flow; Subject Term: CONDENSATION; Subject Term: NUCLEATION; Subject Term: SEDIMENTATION & deposition; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 8p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.4811448 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88345443&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nobuo Masataka AU - Perlovsky, Leonid T1 - Cognitive interference can be mitigated by consonant music and facilitated by dissonant music. JO - Scientific Reports JF - Scientific Reports Y1 - 2013/06/21/ M3 - Article SP - 1 EP - 6 SN - 20452322 AB - Debates on the origins of consonance and dissonance in music have a long history. While some scientists argue that consonance judgments are an acquired competence based on exposure to the musical-system-specific knowledge of a particular culture, others favor a biological explanation for the observed preference for consonance. Here we provide experimental confirmation that this preference plays an adaptive role in human cognition: it reduces cognitive interference. The results of our experiment reveal that exposure to a Mozart minuet mitigates interference, whereas, conversely, when the music is modified to consist of mostly dissonant intervals the interference effect is intensified. [ABSTRACT FROM AUTHOR] AB - Copyright of Scientific Reports is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COGNITION KW - CONSONANCE (Music theory) KW - FILIBUSTERS (Political science) KW - MOZART effect KW - FORENSICS (Public speaking) N1 - Accession Number: 91658599; Nobuo Masataka 1; Email Address: masataka.nobuo.7r@kyoto-u.ac.jp Perlovsky, Leonid 2; Affiliation: 1: Primate Research Institute, Kyoto University, Kanrin, Inuyama, Aichi, Japan 2: Athinoula A. Martinos Center for Biomedical Imaging, Harvard University, Charlestown, MA, USA and Air Force Research Laboratory, Dayton, OH, USA; Source Info: 6/21/2013, p1; Subject Term: COGNITION; Subject Term: CONSONANCE (Music theory); Subject Term: FILIBUSTERS (Political science); Subject Term: MOZART effect; Subject Term: FORENSICS (Public speaking); Number of Pages: 6p; Document Type: Article L3 - 10.1038/srep02028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91658599&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McCue, Benjamin M. AU - Blalock, Benjamin J. AU - Britton, Charles L. AU - Potts, Jeff AU - Kemerling, James AU - Isihara, Kiyosi AU - Leines, Matthew T. T1 - A Wide Temperature, Radiation Tolerant, CMOS-Compatible Precision Voltage Referencefor Extreme Radiation Environment Instrumentation Systems. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2013/06/20/Jun2013 Part 3 VL - 60 IS - 3 M3 - Article SP - 2272 EP - 2279 SN - 00189499 AB - Many design techniques have been incorporated into modern CMOS design practices to improve radiation tolerance of integrated circuits. Annular-gate NMOS structures have been proven to be significantly more radiation tolerant than the standard, straight-gate variety. Many circuits can be designed using the annular-gate NMOS and the inherently radiation tolerant PMOS. Bandgap reference circuits, however, typically require p-n junction diodes. These p-n junction diodes are the dominating factor in radiation degradation in bandgap reference circuits. This paper proposes a different approach to bandgap reference design to alleviate the radiation susceptibility presented by the p-n junction diodes. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPLEMENTARY metal oxide semiconductors -- Design & construction KW - ELECTRONIC circuit design KW - RADIATION hardening (Electronics) KW - ENERGY gaps (Physics) KW - P-N junctions (Semiconductors) KW - Bandgap reference KW - CMOS KW - dynamic threshold MOSFET (DTMOS) KW - radiation hardening by design (RHBD) KW - total ionizing dose (TID) radiation N1 - Accession Number: 88206642; McCue, Benjamin M. 1 Blalock, Benjamin J. 1 Britton, Charles L. 2 Potts, Jeff 3 Kemerling, James 4 Isihara, Kiyosi 5 Leines, Matthew T. 6; Affiliation: 1: Department of Electrical Engineering and Computer Science, University of Tennessee, Knoxville, TN, USA 2: Oak Ridge National Laboratory, Oak Ridge, TN, USA 3: Principal Engineering Group Leader with Triad Semiconductor, Inc., Winston-Salem, NC, USA 4: Chief Technical Officer with Triad Semiconductor, Inc., Winston-Salem, NC, USA 5: Software Division with Triad Semiconductor, Inc., Winston-Salem, NC, USA 6: United States Air Force,; Source Info: Jun2013 Part 3, Vol. 60 Issue 3, p2272; Subject Term: COMPLEMENTARY metal oxide semiconductors -- Design & construction; Subject Term: ELECTRONIC circuit design; Subject Term: RADIATION hardening (Electronics); Subject Term: ENERGY gaps (Physics); Subject Term: P-N junctions (Semiconductors); Author-Supplied Keyword: Bandgap reference; Author-Supplied Keyword: CMOS; Author-Supplied Keyword: dynamic threshold MOSFET (DTMOS); Author-Supplied Keyword: radiation hardening by design (RHBD); Author-Supplied Keyword: total ionizing dose (TID) radiation; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TNS.2013.2257850 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88206642&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Park, Chan Hee AU - Kim, Jeoung Han AU - Yeom, Jong-Taek AU - Oh, Chang-Seok AU - Semiatin, S.L. AU - Lee, Chong Soo T1 - Formation of a submicrocrystalline structure in a two-phase titanium alloy without severe plastic deformation. JO - Scripta Materialia JF - Scripta Materialia Y1 - 2013/06/15/ VL - 68 IS - 12 M3 - Article SP - 996 EP - 999 SN - 13596462 AB - The formation of submicrocrystalline (SMC) Ti–6Al–4V was achieved by imposing a much lower strain (ε =1.4) compared to that typically imposed during severe plastic deformation operations (i.e. 4⩽ ε ⩽8). Electron backscatter diffraction analysis revealed that the novel process was effective in promoting dynamic recrystallization and limiting α grain growth. The SMC sheet had much higher yield strength than usual (1134MPa) and reasonable elongation (∼12%) at room temperature, and exhibited enhanced ductility at elevated temperatures. [ABSTRACT FROM AUTHOR] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - CRYSTAL structure KW - PLASTICITY KW - ELECTRONS -- Backscattering KW - RECRYSTALLIZATION (Metallurgy) KW - METALS -- Mechanical properties KW - Martensite KW - Recrystallization KW - Thermomechanical processing KW - Titanium KW - Ultrafine grain N1 - Accession Number: 89194003; Park, Chan Hee 1; Email Address: chpark@kims.re.kr Kim, Jeoung Han 1 Yeom, Jong-Taek 1 Oh, Chang-Seok 1 Semiatin, S.L. 2 Lee, Chong Soo 3; Email Address: cslee@postech.ac.kr; Affiliation: 1: Light Metal Division, Korea Institute of Materials Science, Changwon 642-831, Republic of Korea 2: Air Force Research Laboratory, AFRL/RXLM, Wright-Patterson AFB, OH 45433-7817, USA 3: Graduate Institute of Ferrous Technology, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea; Source Info: Jun2013, Vol. 68 Issue 12, p996; Subject Term: TITANIUM alloys; Subject Term: CRYSTAL structure; Subject Term: PLASTICITY; Subject Term: ELECTRONS -- Backscattering; Subject Term: RECRYSTALLIZATION (Metallurgy); Subject Term: METALS -- Mechanical properties; Author-Supplied Keyword: Martensite; Author-Supplied Keyword: Recrystallization; Author-Supplied Keyword: Thermomechanical processing; Author-Supplied Keyword: Titanium; Author-Supplied Keyword: Ultrafine grain; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2013.02.055 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89194003&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Linker, Jon A. AU - Mikic, Zoran AU - Riley, Pete AU - Downs, Cooper AU - Lionello, Roberto AU - Henney, Carl AU - Arge, Charles N. T1 - Coronal and heliospheric modeling using flux-evolved maps. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2013/06/13/ VL - 1539 IS - 1 M3 - Article SP - 26 EP - 29 PB - American Institute of Physics SN - 0094243X AB - Magnetohydrodynamic (MHD) simulations are now routinely used to produce models of the solar corona and inner heliosphere for specific time periods. These models typically rely on maps of the photospheric magnetic field. Two well-known problems arise from the use of these "synoptic" maps. First, the Sun's poles are poorly observed, which necessarily means that the polar fields in these maps must be reconstructed with a variety of interpolation/extrapolation techniques. Second, the synoptic maps contain data that is as much as 27 days old, whereas the Sun's magnetic flux is always evolving. Flux evolution models can in principle alleviate both these difficulties, by providing physical approximations for the polar fields and by estimating the likely state of the field on unobserved portions of the Sun. In this study, we focus on the polar field problem, and show why typical synoptic maps may underestimate the polar magnetic fields near solar minimum. We use a map created with the Air Force Data Assimilative Photospheric flux Transport (ADAPT)model to show that it contains significantly higher polar fluxes than a corresponding synoptic map with polar fields filled by extrapolation. We then show with potential field source-surface (PFSS) models that this map produces higher estimates for the interplanetary magnetic field, which correspond more closely to observations. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HELIOSPHERE (Astrophysics) KW - MAGNETOHYDRODYNAMICS KW - COSMIC magnetic fields KW - DATA analysis KW - SOLAR corona N1 - Accession Number: 88283369; Linker, Jon A. 1 Mikic, Zoran 1 Riley, Pete 1 Downs, Cooper 1 Lionello, Roberto 1 Henney, Carl 2 Arge, Charles N. 2; Affiliation: 1: Predictive Science, Inc., 9990 Mesa Rim Rd., Suite 170, San Diego. CA 92121, 2: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117,; Source Info: Jun2013, Vol. 1539 Issue 1, p26; Subject Term: HELIOSPHERE (Astrophysics); Subject Term: MAGNETOHYDRODYNAMICS; Subject Term: COSMIC magnetic fields; Subject Term: DATA analysis; Subject Term: SOLAR corona; Number of Pages: 4p; Illustrations: 3 Color Photographs, 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1063/1.4810981 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88283369&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Kyung Min AU - Wang, David H. AU - Koerner, Hilmar AU - Vaia, Richard A. AU - Tan, Loon-Seng AU - White, Timothy J. T1 - Photomechanical Response of Pre-strained Azobenzene-Functionalized Polyimide Materials. JO - Macromolecular Chemistry & Physics JF - Macromolecular Chemistry & Physics Y1 - 2013/06/13/ VL - 214 IS - 11 M3 - Article SP - 1189 EP - 1194 SN - 10221352 AB - Recently, we have reported that azobenzene-functionalized polyimide materials exhibit a substantial increase in photogenerated stress in comparison to azobenzene-functionalized acrylate-based liquid crystal polymer networks. Here, we show that pre-straining the azo-CP2-20 material further increases the magnitude of the photomechanical response visualized as bending in the cantilever geometry as well as in direct measurements of photogenerated stress. Additionally, we also report on the ability to optically fix both optically and mechanically generated shapes in azo-CP2-20. The optically fixable shape memory of azo-CP2-20 is enabled by the introduction of excess free volume during thermal processing as the material was pre-strained. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecular Chemistry & Physics is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AZOBENZENE -- Analysis KW - POLYIMIDES KW - RESEARCH KW - POLYMER networks KW - CRYSTALLINE polymers KW - BENDING stresses KW - actuation KW - azobenzene KW - glassy polymers KW - polyimide KW - shape memory N1 - Accession Number: 87918889; Lee, Kyung Min 1,2 Wang, David H. 1,3 Koerner, Hilmar 1,3 Vaia, Richard A. 1 Tan, Loon-Seng 1 White, Timothy J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH, 45433, USA 2: Azimuth Corporation, 4134 Linden Avenue, Dayton, OH, 45432, USA 3: UES Inc., 4401 Dayton Xenia Road, Beavercreek, OH, 45432, USA; Source Info: Jun2013, Vol. 214 Issue 11, p1189; Subject Term: AZOBENZENE -- Analysis; Subject Term: POLYIMIDES; Subject Term: RESEARCH; Subject Term: POLYMER networks; Subject Term: CRYSTALLINE polymers; Subject Term: BENDING stresses; Author-Supplied Keyword: actuation; Author-Supplied Keyword: azobenzene; Author-Supplied Keyword: glassy polymers; Author-Supplied Keyword: polyimide; Author-Supplied Keyword: shape memory; Number of Pages: 6p; Document Type: Article L3 - 10.1002/macp.201200340 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87918889&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Kyung Min AU - Wang, David H. AU - Koerner, Hilmar AU - Vaia, Richard A. AU - Tan, Loon-Seng AU - White, Timothy J. T1 - Macromol. Chem. Phys. 11/2013. JO - Macromolecular Chemistry & Physics JF - Macromolecular Chemistry & Physics Y1 - 2013/06/13/ VL - 214 IS - 11 M3 - Article SP - 1288 EP - 1288 SN - 10221352 AB - A diagram is presented thats shows shape-memory effect in polymers. KW - POLYMERS KW - CHARTS, diagrams, etc. KW - SHAPE memory polymers KW - actuation KW - azobenzene KW - glassy polymers KW - polyimide KW - shape memory N1 - Accession Number: 87918892; Lee, Kyung Min 1,2 Wang, David H. 1,3 Koerner, Hilmar 1,3 Vaia, Richard A. 1 Tan, Loon-Seng 1 White, Timothy J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH, 45433, USA 2: Azimuth Corporation, 4134 Linden Avenue, Dayton, OH, 45432, USA 3: UES Inc., 4401 Dayton Xenia Road, Beavercreek, OH, 45432, USA; Source Info: Jun2013, Vol. 214 Issue 11, p1288; Subject Term: POLYMERS; Subject Term: CHARTS, diagrams, etc.; Subject Term: SHAPE memory polymers; Author-Supplied Keyword: actuation; Author-Supplied Keyword: azobenzene; Author-Supplied Keyword: glassy polymers; Author-Supplied Keyword: polyimide; Author-Supplied Keyword: shape memory; Number of Pages: 1p; Document Type: Article L3 - 10.1002/macp.201370040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87918892&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiao, C.Q. AU - Adams, S.F. T1 - Electron ionization of o-xylene, m-xylene and p-xylene. JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2013/06/06/ VL - 573 M3 - Article SP - 24 EP - 28 SN - 00092614 AB - Highlights: [•] Electron ionization cross sections of o-xylene, m-xylene and p-xylene are measured. [•] The product ion branching ratios are essentially identical among the three xylenes. [•] The similar branching ratios can be explained by a common fragmentation mechanism. [•] The fragmentation pathways are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON impact ionization KW - XYLENE KW - FRAGMENTATION reactions KW - CHEMICAL engineering KW - AROMATIC compounds KW - ION exchange (Chemistry) N1 - Accession Number: 89276363; Jiao, C.Q. 1; Email Address: charles.jiao.ctr@wpafb.af.mil Adams, S.F. 2; Email Address: steven.adams@wpafb.af.mil; Affiliation: 1: UES Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432-1894, United States 2: Air Force Research Laboratory, Wright-Patterson AFB, AFRL/RQQE 2130 Eighth Street, OH 45433-7542, United States; Source Info: Jun2013, Vol. 573, p24; Subject Term: ELECTRON impact ionization; Subject Term: XYLENE; Subject Term: FRAGMENTATION reactions; Subject Term: CHEMICAL engineering; Subject Term: AROMATIC compounds; Subject Term: ION exchange (Chemistry); NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.cplett.2013.04.051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89276363&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - De Leon, Nicholas AU - Wang, Billie AU - Weinberger, Christopher R. AU - Matson, Lawrence E. AU - Thompson, Gregory B. T1 - Elevated-temperature deformation mechanisms in Ta2C: An experimental study. JO - Acta Materialia JF - Acta Materialia Y1 - 2013/06// VL - 61 IS - 11 M3 - Article SP - 3905 EP - 3913 SN - 13596454 AB - Abstract: A polycrystalline α-Ta2C bar, fabricated by hot isostatic pressing, was tested in four-point bending at approximately 1930°C. The sample showed significant plastic deformation. Transmission electron microscopy, using two-beam defect analysis, confirmed pyramidal dislocation slip of the type . Basal and prismatic slip of type could not be determined because of significant contrast interference from stacking faults that formed in the material. The increase in stacking fault density observed after thermomechanical loading is not believed to be caused by deformation but rather is due to growth faults that formed from the slight carburization of Ta2C from the graphite heating filaments in the testing apparatus. The significant plasticity accommodation in Ta2C is a result of basal and non-basal slip and the wide spacing of the Ta–Ta metallic bonds that form inherent to its crystallography. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TANTALUM compounds KW - TEMPERATURE effect KW - DEFORMATIONS (Mechanics) KW - POLYCRYSTALS KW - MICROFABRICATION KW - TRANSMISSION electron microscopy KW - Dislocations KW - Plastic deformation KW - Slip system KW - TEM KW - UHTC N1 - Accession Number: 89101345; De Leon, Nicholas 1 Wang, Billie 1 Weinberger, Christopher R. 2 Matson, Lawrence E. 3 Thompson, Gregory B. 1; Email Address: gthompson@eng.ua.edu; Affiliation: 1: The University of Alabama, Department of Metallurgical & Materials Engineering, Box 870202, Tuscaloosa, AL 35401-0202, USA 2: Sandia National Laboratories, Albuquerque, NM 87185-1411, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, RXCC Building 655, Room 186, 2230 Tenth St., Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Jun2013, Vol. 61 Issue 11, p3905; Subject Term: TANTALUM compounds; Subject Term: TEMPERATURE effect; Subject Term: DEFORMATIONS (Mechanics); Subject Term: POLYCRYSTALS; Subject Term: MICROFABRICATION; Subject Term: TRANSMISSION electron microscopy; Author-Supplied Keyword: Dislocations; Author-Supplied Keyword: Plastic deformation; Author-Supplied Keyword: Slip system; Author-Supplied Keyword: TEM; Author-Supplied Keyword: UHTC; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.actamat.2013.01.043 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89101345&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Meher, S. AU - Nag, S. AU - Tiley, J. AU - Goel, A. AU - Banerjee, R. T1 - Coarsening kinetics of γ′ precipitates in cobalt-base alloys. JO - Acta Materialia JF - Acta Materialia Y1 - 2013/06// VL - 61 IS - 11 M3 - Article SP - 4266 EP - 4276 SN - 13596454 AB - Abstract: The expeditious development of novel cobalt-base γ–γ′ alloys as possible next generation superalloys critically depends on achieving a comprehensive understanding of the coarsening kinetics of ordered γ′ precipitates. This paper discusses the coarsening of L12 ordered Co3(W, Al) precipitates in a model ternary Co–10Al–10W (at.%) alloy during isothermal annealing at 800 and 900°C. The experimentally determined temporal evolution of average size of the γ′ precipitates suggests classical matrix diffusion limited Lifshitz–Slyozov–Wagner coarsening at both temperatures. The γ′ coarsening rate constants have been determined using a modified coarsening rate equation for non-dilute solutions. Furthermore, using the Cahn–Hilliard formulation for interfacial energy, the γ/γ′ interfacial energies at the respective annealing temperatures have been correlated to the concentration profile across the interface that has been experimentally determined using atom probe tomography. The calculated interfacial energies are in comparable range with those observed in nickel-base superalloys. Additionally, this analysis has permitted, for the first time, the determination of the gradient energy coefficient for γ/γ′ interfaces in Co-base alloys, a critical input for phase-field and other simulation models for microstructural evolution. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COBALT alloys KW - OSTWALD ripening KW - CHEMICAL kinetics KW - PRECIPITATION (Chemistry) KW - TERNARY system KW - TEMPERATURE effect KW - APT KW - Coarsening KW - Cobalt alloys KW - Interface KW - TEM N1 - Accession Number: 89101378; Meher, S. 1 Nag, S. 1 Tiley, J. 2 Goel, A. 3 Banerjee, R. 1; Email Address: rajarshi.banerjee@unt.edu; Affiliation: 1: Center for Advanced Research and Technology and Department of Materials Science and Engineering, University of North Texas, Denton, TX, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH, USA 3: Department of Metallurgical & Materials Engineering, Indian Institute of Technology, Kharagpur, WB, India; Source Info: Jun2013, Vol. 61 Issue 11, p4266; Subject Term: COBALT alloys; Subject Term: OSTWALD ripening; Subject Term: CHEMICAL kinetics; Subject Term: PRECIPITATION (Chemistry); Subject Term: TERNARY system; Subject Term: TEMPERATURE effect; Author-Supplied Keyword: APT; Author-Supplied Keyword: Coarsening; Author-Supplied Keyword: Cobalt alloys; Author-Supplied Keyword: Interface; Author-Supplied Keyword: TEM; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.actamat.2013.03.052 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89101378&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Braun, Eric M. AU - Lu, Frank K. AU - Wilson, Donald R. AU - Camberos, José A. T1 - Airbreathing rotating detonation wave engine cycle analysis. JO - Aerospace Science & Technology JF - Aerospace Science & Technology Y1 - 2013/06// VL - 27 IS - 1 M3 - Article SP - 201 EP - 208 SN - 12709638 AB - Abstract: A cycle analysis model for an airbreathing, rotating detonation wave engine (RDE) is presented. The engine consists of a steady inlet system with an isolator which delivers air into an annular combustor. A detonation wave continuously rotates around the combustor with side relief as the flow expands towards the nozzle. A model for the side relief is used to find the pressure distribution around the combustor. Air and fuel enter the combustor when the rarefaction wave pressure behind the detonation front drops to the inlet supply pressure. To create a stable RDE, the inlet pressure is matched in a convergence process with the average combustor pressure by increasing the annulus channel radial width with respect to the isolator channel. Performance of this engine is considered using several parametric studies and compared with rocket-mode computational results. A hydrogen–air RDE reaches a specific impulse of 3800 s and can reach a flight speed of Mach 5. [Copyright &y& Elsevier] AB - Copyright of Aerospace Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRBREATHING launch vehicles KW - ROTATIONAL motion KW - DETONATION waves KW - PERFORMANCE evaluation KW - ISOLATORS (Engineering) KW - Cycle analysis KW - Detonation KW - Propulsion system N1 - Accession Number: 89101300; Braun, Eric M. 1; Email Address: eric.braun@mavs.uta.edu Lu, Frank K. 1 Wilson, Donald R. 1 Camberos, José A. 2; Affiliation: 1: University of Texas at Arlington, Arlington, TX 76019, USA 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Jun2013, Vol. 27 Issue 1, p201; Subject Term: AIRBREATHING launch vehicles; Subject Term: ROTATIONAL motion; Subject Term: DETONATION waves; Subject Term: PERFORMANCE evaluation; Subject Term: ISOLATORS (Engineering); Author-Supplied Keyword: Cycle analysis; Author-Supplied Keyword: Detonation; Author-Supplied Keyword: Propulsion system; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.ast.2012.08.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89101300&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grasch, Adam D. AU - Jaworski, Justin W. AU - Tang, Deman AU - Dowell, Earl H. T1 - Resonant Frequency Determination of a Multistore High-Altitude/Long-Endurance Wing. JO - AIAA Journal JF - AIAA Journal Y1 - 2013/06// VL - 51 IS - 6 M3 - Article SP - 1277 EP - 1283 SN - 00011452 AB - It is desirable to predict the resonant frequencies and mode shapes of extremely high-aspect ratio wings for high-altitude/long-endurance applications. Such results give insight into structural response and serve as a precursor to flutter and gust response calculations. The influence of rigid body modes has been shown to be significant for the aeroelastic response of these aircraft, but this effect is frequently not captured in a laboratory setting. Additionally, resonant frequencies can be difficult to predict when multiple discrete masses such as engines or mission pods are distributed along the span. In this work, the resonant frequencies of a high-altitude/long-endurance wing mounted on a spring of variable stiffness with both root and tip stores are determined analytically from classical beam theory. The model is then extended through a component-mode synthesis to incorporate multiple spanwise masses of any discrete distribution. Computational results are compared with an experiment, and good agreement is shown. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESONANT vibration KW - RESEARCH KW - ALTITUDES KW - AEROELASTICITY KW - AERODYNAMICS -- Research KW - UNIFORM distribution (Probability theory) N1 - Accession Number: 87806369; Grasch, Adam D. 1,2; Email Address: adam.grasch@alumni.duke.edu Jaworski, Justin W. 3,4; Email Address: jwj@alumni.duke.edu Tang, Deman 4,5; Email Address: demant@duke.edu Dowell, Earl H. 6,7; Email Address: dowell@ee.duke.edu; Affiliation: 1: Department of Aerospace Engineering, Queens Building, University Walk, University of Bristol, Bristol, England BS8 1TR, United Kingdom 2: Student Member AIAA 3: NRC Postdoctoral Research Associate, Air Vehicles Directorate, Computational Sciences Branch, 2210 Eighth Street, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7913 4: Member AIAA 5: Research Associate Professor, Department of Mechanical Engineering and Materials Science, Box 90300, Hudson Hall, Duke University, Durham, North Carolina 27708 6: William Holland Hall Professor, Department of Mechanical Engineering and Materials Science, Box 90300, Hudson Hall, Duke University, Durham, North Carolina 27708 7: Honorary Fellow AIAA; Source Info: Jun2013, Vol. 51 Issue 6, p1277; Subject Term: RESONANT vibration; Subject Term: RESEARCH; Subject Term: ALTITUDES; Subject Term: AEROELASTICITY; Subject Term: AERODYNAMICS -- Research; Subject Term: UNIFORM distribution (Probability theory); Number of Pages: 7p; Document Type: Article L3 - 10.2514/1.J051499 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87806369&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanford, Bret AU - Beran, Philip AU - Kobayashi, Marcelo T1 - Simultaneous Topology Optimization of Membrane Wings and Their Compliant Flapping Mechanisms. JO - AIAA Journal JF - AIAA Journal Y1 - 2013/06// VL - 51 IS - 6 M3 - Article SP - 1431 EP - 1441 SN - 00011452 AB - This work explores the interdependencies between the topological design of a compliant flapping mechanism and that of a flight-loaded elastic membrane-wing skeleton. This is done via a monolithic aeroelastic framework that encompasses the compliant-mechanism deformation, the motion of a flexible wing, and the transmission of aerodynamic and inertial forces back into the mechanism. A cellular-based evolutionary topology optimization scheme is used for mechanism design, wing design, or both simultaneously. The latter approach is shown to provide superior performance as this allows the tightly coupled nature of the two structures to be fully exploited. The results presented here also demonstrate potential issues that arise during wing design if the flapping kinematics are assumed to be prescribed. Finally, the mechanism topology is further improved via a gradient-based sizing/shape optimization to decrease actuator requirements as well as the time-dependent elastic stresses. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORNITHOPTERS KW - RESEARCH KW - FLYING-machines KW - ACTUATORS -- Research KW - KINEMATICS KW - TOPOLOGY N1 - Accession Number: 87806382; Stanford, Bret 1,2,3; Email Address: bretkennedystanford@gmail.com Beran, Philip 4,5 Kobayashi, Marcelo 3,6; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Research Aerospace Engineer, Universal Technology Corporation 3: Member AIAA 4: Principal Research Aerospace Engineer, AFRL/RQSE, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 5: Senior Member AIAA 6: Professor, Department of Mechanical Engineering, University of Hawaii at Manoa, Honolulu, Hawaii 96822; Source Info: Jun2013, Vol. 51 Issue 6, p1431; Subject Term: ORNITHOPTERS; Subject Term: RESEARCH; Subject Term: FLYING-machines; Subject Term: ACTUATORS -- Research; Subject Term: KINEMATICS; Subject Term: TOPOLOGY; Number of Pages: 11p; Document Type: Article L3 - 10.2514/1.J052118 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87806382&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wu, Yue AU - Zhang, Zhili AU - Ombrello, Timothy AU - Katta, Viswanath T1 - Quantitative Radar REMPI measurements of methyl radicals in flames at atmospheric pressure. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2013/06// VL - 111 IS - 3 M3 - Article SP - 391 EP - 397 PB - Springer Science & Business Media B.V. SN - 09462171 AB - Spatially resolved quantitative measurements of methyl radicals (CH) in CH/air flames at atmospheric pressure have been achieved using coherent microwave Rayleigh scattering from Resonance enhanced multi-photon ionization, Radar REMPI. Relative direct measurements of the methyl radicals were conducted by Radar REMPI via the two-photon resonance of the $$ 3p^{2} A_{2}^{\prime \prime } 0_{0}^{0} $$ state and subsequent one-photon ionization. Due to the proximity of the argon resonance state of 2 s2 p4 f [7 /2, J = 4](4+1 REMPI by 332.5 nm) with the CH state of $$ 3p^{2} A_{2}^{\prime \prime } 0_{0}^{0} $$ (2+1 REMPI by 333.6 nm), in situ calibration with argon was performed to quantify the absolute concentration of CH. The REMPI cross sections of CH and argon were calculated based on time-dependent quantum perturbation theory. The measured CH concentration in CH/air flames was in good agreement with numerical simulations performed using detailed chemical kinetics. The Radar REMPI method has shown great flexibility for spatial scanning, large signal-to-noise ratio for measurements at atmospheric pressures, and significant potential to be straightforwardly generalized for the quantitative measurements of other radicals and intermediate species in practical and relevant combustion environments. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METHYL radicals KW - ATMOSPHERIC pressure KW - QUANTITATIVE research KW - RAYLEIGH scattering KW - SIGNAL-to-noise ratio KW - PERTURBATION (Quantum dynamics) KW - GENERALIZATION N1 - Accession Number: 87950536; Wu, Yue 1 Zhang, Zhili 1; Email Address: zzhang24@utk.edu Ombrello, Timothy 2 Katta, Viswanath 3; Affiliation: 1: Mechanical, Aerospace and Biomedical Engineering, University of Tennessee, Knoxville 37996 USA 2: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, Dayton 45433 USA 3: Innovative Scientific Solutions Incorporated, Dayton 45440 USA; Source Info: Jun2013, Vol. 111 Issue 3, p391; Subject Term: METHYL radicals; Subject Term: ATMOSPHERIC pressure; Subject Term: QUANTITATIVE research; Subject Term: RAYLEIGH scattering; Subject Term: SIGNAL-to-noise ratio; Subject Term: PERTURBATION (Quantum dynamics); Subject Term: GENERALIZATION; Number of Pages: 7p; Illustrations: 1 Color Photograph, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1007/s00340-013-5345-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87950536&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Muratore, C. AU - Reed, A.N. AU - Bultman, J.E. AU - Ganguli, S. AU - Cola, B.A. AU - Voevodin, A.A. T1 - Nanoparticle decoration of carbon nanotubes by sputtering JO - Carbon JF - Carbon Y1 - 2013/06// VL - 57 M3 - Article SP - 274 EP - 281 SN - 00086223 AB - Abstract: Vapor phase growth of gold, nickel and titanium metal nanoparticles on multiwall carbon nanotube (MWCNT) buckypaper by sputtering was investigated. The size and distribution of nanoparticles was dependent on the intrinsic binding energy of the metal elements, but could be altered to mimic that of metals with different binding energies by in situ modification of the MWCNT surfaces by energetic metal ions or annealing of the buckypaper. A range of average gold particle diameters from approximately 5–30nm could be produced depending on the intrinsic sputter process parameters (especially metal ion flux and kinetic energy) and defect density of the MWCNT surfaces, which could also be controlled by annealing prior to sputtering. The diameter of the MWCNTs had a significant influence on the geometry of the nanoparticles. Particles were elongated along the nanotube axis for tube diameters <30nm. Remarkably strong alignment of the particles along the nanotube axis was observed, especially for MWCNTs with higher defect densities. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - SPUTTERING (Physics) KW - VAPOR phase epitaxial growth KW - MULTIWALLED carbon nanotubes KW - PARTICLE size distribution KW - BINDING energy KW - ANNEALING of metals KW - METAL ions N1 - Accession Number: 86394886; Muratore, C. 1,2; Email Address: cmuratore1@udayton.edu Reed, A.N. 2 Bultman, J.E. 2,3 Ganguli, S. 2,3 Cola, B.A. 4 Voevodin, A.A. 2; Affiliation: 1: Department of Chemical and Materials Engineering, University of Dayton, Dayton, OH 45469-0240, United States 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Thermal Sciences and Materials Branch, 2941 Hobson Way, Wright-Patterson Air Force Base, OH 45433, United States 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, United States 4: George W. Woodruff School of Mechanical Engineering and School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, 30332,United States; Source Info: Jun2013, Vol. 57, p274; Subject Term: NANOPARTICLES; Subject Term: SPUTTERING (Physics); Subject Term: VAPOR phase epitaxial growth; Subject Term: MULTIWALLED carbon nanotubes; Subject Term: PARTICLE size distribution; Subject Term: BINDING energy; Subject Term: ANNEALING of metals; Subject Term: METAL ions; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.carbon.2013.01.074 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86394886&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hwang, J.Y. AU - Lim, B.K. AU - Tiley, J. AU - Banerjee, R. AU - Hong, S.H. T1 - Interface analysis of ultra-high strength carbon nanotube/nickel composites processed by molecular level mixing JO - Carbon JF - Carbon Y1 - 2013/06// VL - 57 M3 - Article SP - 282 EP - 287 SN - 00086223 AB - Abstract: Carbon nanotube (CNT) reinforced nickel matrix (CNT/Ni) composites exhibiting a yield strength (YS) of 710MPa, about 3.7 times higher than monolithic nickel, have been processed by a molecular-level mixing process followed by spark plasma sintering (SPS). The enormous strength increase in these composites can be attributed to a homogeneous distribution of nanotubes in the nickel matrix coupled with the formation of well-bonded, high strength, contaminant-free nanotube/nickel interfaces, as revealed by high-resolution transmission electron microscopy. Such interfaces can effectively transfer load between nanotubes and nickel matrix in the CNT/Ni composites. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERFACES (Physical sciences) KW - STRENGTH of materials KW - NICKEL KW - METALLIC composites KW - CARBON nanotubes KW - MIXING KW - CHEMICAL processes N1 - Accession Number: 86394887; Hwang, J.Y. 1 Lim, B.K. 2 Tiley, J. 3 Banerjee, R. 4 Hong, S.H. 2; Email Address: shhong@kaist.ac.kr; Affiliation: 1: Carbon Convergence Materials Research Center, Korea Institute of Science and Technology, Jeonbuk 565-905, Republic of Korea 2: Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH 45433, USA 4: Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203, USA; Source Info: Jun2013, Vol. 57, p282; Subject Term: INTERFACES (Physical sciences); Subject Term: STRENGTH of materials; Subject Term: NICKEL; Subject Term: METALLIC composites; Subject Term: CARBON nanotubes; Subject Term: MIXING; Subject Term: CHEMICAL processes; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.carbon.2013.01.075 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86394887&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Echchgadda, Ibtissam AU - Roth, Caleb C. AU - Cerna, Cesario Z. AU - Wilmink, Gerald J. T1 - Temporal Gene Expression Kinetics for Human Keratinocytes Exposed to Hyperthermic Stress. JO - Cells (2073-4409) JF - Cells (2073-4409) Y1 - 2013/06// VL - 2 IS - 2 M3 - Article SP - 224 EP - S132 SN - 20734409 AB - he gene expression kinetics for human cells exposed to hyperthermic stress are not well characterized. In this study, we identified and characterized the genes that are differentially expressed in human epidermal keratinocyte (HEK) cells exposed to hyperthermic stress. In order to obtain temporal gene expression kinetics, we exposed HEK cells to a heat stress protocol (44 ° C for 40 min) and used messenger RNA (mRNA) microarrays at 0 h, 4 h and 24 h post-exposure. Bioinformatics software was employed to characterize the chief biological processes and canonical pathways associated with these heat stress genes. The data shows that the genes encoding for heat shock proteins (HSPs) that function to prevent further protein denaturation and aggregation, such as HSP40, HSP70 and HSP105, exhibit maximal expression immediately after exposure to hyperthermic stress. In contrast, the smaller HSPs, such as HSP10 and HSP27, which function in mitochondrial protein biogenesis and cellular adaptation, exhibit maximal expression during the "recovery phase", roughly 24 h post-exposure. These data suggest that the temporal expression kinetics for each particular HSP appears to correlate with the cellular function that is required at each time point. In summary, these data provide additional insight regarding the expression kinetics of genes that are triggered in HEK cells exposed to hyperthermic stress. [ABSTRACT FROM AUTHOR] AB - Copyright of Cells (2073-4409) is the property of MDPI Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GENE expression KW - STRESS (Physiology) KW - KERATINOCYTES KW - HEAT -- Physiological effect KW - MESSENGER RNA KW - HEAT shock proteins KW - bioinformatics KW - cellular stress response KW - gene expression KW - heat shock KW - keratinocytes N1 - Accession Number: 89448525; Echchgadda, Ibtissam 1,2; Email Address: ibtissam.echchgadda.ctr@mail.mil Roth, Caleb C. 3; Email Address: rothc@livemail.uthscsa.edu Cerna, Cesario Z. 4; Email Address: cesario.z.cerna.ctr@mail.mil Wilmink, Gerald J. 1; Email Address: gerald.j.wilmink.civ@mail.mil; Affiliation: 1: Air Force Research Laboratory, 711th Human Performance Wing, Human Effectiveness Directorate, Bioeffects Division, Radio Frequency Bioeffects Branch, 4141 Petroleum Road, Bldg. 3260, Fort Sam Houston, TX 78234, USA 2: National Academy of Sciences NRC Research Associateship, Fort Sam Houston, TX 78234, USA 3: Department of Radiology, University of Texas Health Science Center San Antonio, San Antonio, TX 78229, USA 4: General Dynamics Information Technology, Fort Sam Houston, TX 78234, USA; Source Info: Jun2013, Vol. 2 Issue 2, p224; Subject Term: GENE expression; Subject Term: STRESS (Physiology); Subject Term: KERATINOCYTES; Subject Term: HEAT -- Physiological effect; Subject Term: MESSENGER RNA; Subject Term: HEAT shock proteins; Author-Supplied Keyword: bioinformatics; Author-Supplied Keyword: cellular stress response; Author-Supplied Keyword: gene expression; Author-Supplied Keyword: heat shock; Author-Supplied Keyword: keratinocytes; Number of Pages: 152p; Document Type: Article L3 - 10.3390/cells2020224 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89448525&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - de Freitas, Adrian A. AU - de Freitas, Michelle M. T1 - Classroom Live: a software-assisted gamification tool. JO - Computer Science Education JF - Computer Science Education Y1 - 2013/06// VL - 23 IS - 2 M3 - Article SP - 186 EP - 206 SN - 08993408 AB - Teachers have come to rely on a variety of approaches in order to elicit and sustain student interest in the classroom. One particular approach, known asgamification, seeks to improve student engagement by transforming the traditional classroom experience into a competitive multiplayer game. Initial attempts at classroom gamification relied on the teacher manually tracking student progress. At the US Air Force Academy, we wanted to experiment with a software gamification tool. Our client/server suite, dubbed Classroom Live, streamlines the gamification process for the teacher by simplifying common tasks. Simultaneously, the tool provides students with an esthetically pleasing user interface that offers in game rewards in exchange for their participation. Classroom Live is still in development, but our initial experience using the tool has been extremely positive and confirms our belief that students respond positively to gamification, even at the undergraduate level. [ABSTRACT FROM AUTHOR] AB - Copyright of Computer Science Education is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOFTWARE as a service KW - MOBILE games KW - SYMBOLIC & mathematical logic KW - MOBILE apps KW - MOBILE communication systems KW - GAMIFICATION KW - education technology KW - gamification KW - interactive software KW - role playing game KW - student engagement KW - teaching methods N1 - Accession Number: 88089534; de Freitas, Adrian A. 1; Email Address: adrian.defreitas@usafa.edu de Freitas, Michelle M. 2; Affiliation: 1: Department of Computer Science , United States Air Force Academy , Colorado Springs , CO , USA 2: Douglas Valley Elementary School , Colorado Springs , CO , USA; Source Info: Jun2013, Vol. 23 Issue 2, p186; Subject Term: SOFTWARE as a service; Subject Term: MOBILE games; Subject Term: SYMBOLIC & mathematical logic; Subject Term: MOBILE apps; Subject Term: MOBILE communication systems; Subject Term: GAMIFICATION; Author-Supplied Keyword: education technology; Author-Supplied Keyword: gamification; Author-Supplied Keyword: interactive software; Author-Supplied Keyword: role playing game; Author-Supplied Keyword: student engagement; Author-Supplied Keyword: teaching methods; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 21p; Document Type: Article L3 - 10.1080/08993408.2013.780449 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88089534&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Raja Parasuraman AU - Galster, Scott T1 - Sensing,assessing,and augmenting threat detection: behavioral,neuroimaging,and brain stimulation evidence for the critical role of attention. JO - Frontiers in Human Neuroscience JF - Frontiers in Human Neuroscience Y1 - 2013/06// VL - 7 M3 - Article SP - 1 EP - 10 SN - 16625161 AB - Rapidly identifying the potentially threatening movements of other people and objects-biological motion perception and action understanding-is critical to maintaining security in many civilian and military settings. A key approach to improving threat detection in these environments is to sense when less than ideal conditions exist for the human observer, assess that condition relative to an expected standard, and if necessary use tools to augment human performance. Action perception is typically viewed as a relatively "primitive," automatic function immune to top-down effects. However, recent research shows that attention is a top-down factor that has a critical influence on the identification of threat-related targets. In this paper we show that detection of motion-based threats is attention sensitive when surveillance images are obscured by other movements, when they are visually degraded, when other stimuli or tasks compete for attention, or when low-probability threats must be watched for over long periods of time-all features typical of operational security settings. Neuroimaging studies reveal that action understanding recruits a distributed network of brain regions, including the superior temporal cortex, intraparietal cortex, and inferior frontal cortex. Within this network, attention modulates activation of the superior temporal sulcus (STS) and middle temporal gyrus. The dorsal frontoparietal network may provide the source of attention-modulation signals to action representation areas. Stimulation of this attention network should therefore enhance threat detection. We show that transcranial Direct Current Stimulation (tDCS) at 2mA accelerates perceptual learning of participants performing a challenging threat-detection task. Together, cognitive, neuroimaging, and brain stimulation studies provide converging evidence for the critical role of attention in the detection and understanding of threat-related intentional actions. [ABSTRACT FROM AUTHOR] AB - Copyright of Frontiers in Human Neuroscience is the property of Frontiers Media S.A. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEURAL stimulation KW - BRAIN function localization KW - BRAIN stimulation KW - MOTION perception (Vision) KW - EJECTION (Psychology) KW - action understanding KW - attention KW - biological motion KW - brain stimulation KW - human performance augmentation KW - neuroimaging KW - security KW - threat detection N1 - Accession Number: 90620833; Raja Parasuraman 1; Email Address: rparasur@gmu.edu Galster, Scott 2; Affiliation: 1: Center of Excellence in Neuroergonomics, Technology and Cognition, George Mason University, Fairfax, VA, USA 2: Applied Neuroscience Branch, Air Force Research Laboratory, Dayton, OH, USA; Source Info: Jun2013, Vol. 7, p1; Subject Term: NEURAL stimulation; Subject Term: BRAIN function localization; Subject Term: BRAIN stimulation; Subject Term: MOTION perception (Vision); Subject Term: EJECTION (Psychology); Author-Supplied Keyword: action understanding; Author-Supplied Keyword: attention; Author-Supplied Keyword: biological motion; Author-Supplied Keyword: brain stimulation; Author-Supplied Keyword: human performance augmentation; Author-Supplied Keyword: neuroimaging; Author-Supplied Keyword: security; Author-Supplied Keyword: threat detection; Number of Pages: 10p; Document Type: Article L3 - 10.3389/fnhum.2013.00273 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90620833&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bechel, Vernon T. AU - Safriet, Sirina AU - Brown, Janis M. AU - Unroe, Marilyn R. T1 - Bismaleimide/preceramic polymer blends for hybrid material transition regions: Part 1. Processing and characterization. JO - High Performance Polymers JF - High Performance Polymers Y1 - 2013/06// VL - 25 IS - 4 M3 - Article SP - 363 EP - 376 SN - 09540083 AB - In this article, initial steps were taken in the study of processing mixtures of a polymer and a preceramic polymer to produce a hybrid material that contains a region of gradual transformation from a polymer to a ceramic. It is thought to be a first step toward the eventual development of a hybrid that is graded from a polymer matrix composite to a ceramic matrix composite. Thermal analysis, elemental analysis, and morphology characterization of blends of RD-730 preceramic polymer, which converts to silicon carbide upon pyrolyzation, and Matrimid A/B polymer which is a bismaleimide were carried out as a function of cure cycles. The cure cycles were chosen to vary the resin viscosity at specific times during processing in order to affect the amount of phase separation of the two resins. These results were then used to make conclusions on how processing parameters affected the miscibility of the two resins and the likelihood of producing a hybrid having mechanical and thermal properties that fall between those of the two constituents. High RD-730 loadings were achieved without phase inversion, the glass transition temperature (Tg) of the blended material was shown to be significantly influenced by a post-cure, and a spatial gradient in RD-730 concentration was noted. [ABSTRACT FROM AUTHOR] AB - Copyright of High Performance Polymers is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MALEIMIDES KW - POLYMER blends KW - CERAMICS KW - HYBRID systems KW - PHASE transformations (Physics) KW - POLYMERIC composites KW - composite KW - hybrid KW - Preceramic polymer KW - thermal protection system N1 - Accession Number: 87909207; Bechel, Vernon T. 1; Email Address: Vernon.Bechel@wpafb.af.mil Safriet, Sirina 2 Brown, Janis M. 1 Unroe, Marilyn R. 1; Affiliation: 1: Air Force Research Laboratory, Wright Patterson AFB, OH, USA 2: Air Force Research Laboratory, Wright Patterson AFB, OH, USA, University of Dayton Research Institute, Dayton, OH, USA; Source Info: Jun2013, Vol. 25 Issue 4, p363; Subject Term: MALEIMIDES; Subject Term: POLYMER blends; Subject Term: CERAMICS; Subject Term: HYBRID systems; Subject Term: PHASE transformations (Physics); Subject Term: POLYMERIC composites; Author-Supplied Keyword: composite; Author-Supplied Keyword: hybrid; Author-Supplied Keyword: Preceramic polymer; Author-Supplied Keyword: thermal protection system; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; Number of Pages: 14p; Document Type: Article; Full Text Word Count: 6667 L3 - 10.1177/0954008312468351 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87909207&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mudaliar, Saba T1 - Multiple Scattering Volume-Surface Interactions. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2013/06// VL - 61 IS - 6 M3 - Article SP - 3225 EP - 3236 SN - 0018926X AB - The combined problem of scattering from random media with rough boundaries is fairly complicated. Hence, it is important to understand the scattering processes involved so that one may develop approximate methods appropriate for the application at hand. To facilitate this we have presented three different approaches: two using statistical wave theories and the third using the transport theory. Each approach gives a different perspective of the scattering processes involved. Although the transport theory is popularly used for this problem we find that certain multiple scattering volume-surface interactions are ignored in this approach. In contrast, our ‘unified approach’ properly takes into account all multiple scattering processes. One reason for this is that it treats volumetric scattering and surface scattering on an equal footing. We observe that because of multiple scattering, the contributions from volumetric scattering and surface scattering get inextricably coupled, and hence cannot be treated separately as it is done in the transport theoretic approach. However, if one component is much weaker than the other the combined problem may be split into two parts: (1) volumetric scattering, and (2) surface scattering. Thus, the computation of the difficult combined problem may be reduced to the computations of two simple problems. This splitting is not the same as that obtained when employing the single scattering approximation. Our detailed analysis of the problem has enhanced our understanding of the multiple scattering processes involved. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCATTERING (Physics) KW - SURFACE interactions KW - SURFACE phenomenon KW - SURFACES (Physics) KW - APPROXIMATION theory KW - Approximation methods KW - multiple scattering KW - random medium KW - Rough interface KW - Rough surfaces KW - Scattering KW - Sea surface KW - Surface roughness KW - Surface treatment KW - Surface waves KW - volume-surface interactions N1 - Accession Number: 87908953; Mudaliar, Saba 1; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH, USA; Source Info: Jun2013, Vol. 61 Issue 6, p3225; Subject Term: SCATTERING (Physics); Subject Term: SURFACE interactions; Subject Term: SURFACE phenomenon; Subject Term: SURFACES (Physics); Subject Term: APPROXIMATION theory; Author-Supplied Keyword: Approximation methods; Author-Supplied Keyword: multiple scattering; Author-Supplied Keyword: random medium; Author-Supplied Keyword: Rough interface; Author-Supplied Keyword: Rough surfaces; Author-Supplied Keyword: Scattering; Author-Supplied Keyword: Sea surface; Author-Supplied Keyword: Surface roughness; Author-Supplied Keyword: Surface treatment; Author-Supplied Keyword: Surface waves; Author-Supplied Keyword: volume-surface interactions; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TAP.2013.2250893 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87908953&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Prather, William D. AU - Giri, Dave V. AU - Gardner, Robert L. AU - Tesche, Fred M. AU - Hutchins, Robert L. AU - Giles, Joseph C. T1 - Early Developments in Sensors and Simulators at the Air Force Weapons Laboratory. JO - IEEE Transactions on Electromagnetic Compatibility JF - IEEE Transactions on Electromagnetic Compatibility Y1 - 2013/06// VL - 55 IS - 3 M3 - Article SP - 431 EP - 439 SN - 00189375 AB - Personnel at the Air Force Weapons Laboratory introduced many innovative concepts in electromagnetics (EM) and created new antenna and sensor designs that made possible much of the wideband electromagnetics technology we have today. Many practitioners in high power EM are familiar with wideband sensors and simulators, but may not be aware of their origin. The purpose of this paper is to describe some of the concepts from which many of the designs evolved and provide some interesting insight into the mind of Dr. Carl Baum, who created them. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electromagnetic Compatibility is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIR forces KW - ELECTROMAGNETIC pulses KW - WEAPONS KW - ANTENNAS (Electronics) -- Design & construction KW - ELECTRONIC noses KW - DESIGN & construction KW - electromagnetic (EM) theory KW - Electromagnetic pulse (EMP) KW - high-altitude electromagnetic pulse (HEMP) KW - sensors KW - simulators KW - test N1 - Accession Number: 88206738; Prather, William D. 1 Giri, Dave V. 2 Gardner, Robert L. 3 Tesche, Fred M. 4 Hutchins, Robert L. 5 Giles, Joseph C. 6; Affiliation: 1: Air Force Research Laboratory , Kirtland AFB, Albuquerque, USA 2: Pro-Tech, Alamo, USA 3: Office of the Secretary of Defense, Washington, DC, USA 4: Clemson University , Clemson, USA 5: Northrop Grumman , Albuquerque, USA 6: Los Alamos National Laboratory, Los Alamos, USA; Source Info: Jun2013, Vol. 55 Issue 3, p431; Subject Term: AIR forces; Subject Term: ELECTROMAGNETIC pulses; Subject Term: WEAPONS; Subject Term: ANTENNAS (Electronics) -- Design & construction; Subject Term: ELECTRONIC noses; Subject Term: DESIGN & construction; Author-Supplied Keyword: electromagnetic (EM) theory; Author-Supplied Keyword: Electromagnetic pulse (EMP); Author-Supplied Keyword: high-altitude electromagnetic pulse (HEMP); Author-Supplied Keyword: sensors; Author-Supplied Keyword: simulators; Author-Supplied Keyword: test; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TEMC.2013.2247767 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88206738&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Giles, Joseph C. AU - Prather, William D. T1 - Worldwide High-Altitude Nuclear Electromagnetic Pulse Simulators. JO - IEEE Transactions on Electromagnetic Compatibility JF - IEEE Transactions on Electromagnetic Compatibility Y1 - 2013/06// VL - 55 IS - 3 M3 - Article SP - 475 EP - 483 SN - 00189375 AB - The five decades since the discovery that the electromagnetic pulse created by a nuclear detonation at high altitude (HEMP) threatens the survivability of strategic military and civilian electronic systems saw development and construction worldwide of many large test facilities for simulating that threat. This paper describes simulators in three categories: guided wave, dipole, and hybrid. In 2002, the International Electrotechnical Commission (IEC) published a compendium of technical information about 42 simulators in 14 countries using this classification system. This paper provides a summary of information in the compendium and describes some developments in the field since 2002. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electromagnetic Compatibility is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRCRAFT industry KW - ELECTROMAGNETIC pulses KW - ELECTRIC generators KW - ELECTRIC lines KW - ELECTROMAGNETIC theory KW - TECHNICAL information KW - Aircraft KW - Electromagnetic pulse (EMP) KW - electromagnetic theory KW - EMP radiation effects KW - Generators KW - high-altitude nuclear electromagnetic pulse (HEMP) KW - IEC standards KW - Laboratories KW - Military aircraft KW - Power transmission lines KW - sensors KW - simulators KW - test KW - INTERNATIONAL Electrotechnical Commission N1 - Accession Number: 88206730; Giles, Joseph C. 1 Prather, William D. 2; Affiliation: 1: Los Alamos National Laboratory and EG&G, Inc., Albuquerque, USA 2: Air Force Research Laboratory, Directed Energy Directorate, Kirtland Air Force Base, NM, USA; Source Info: Jun2013, Vol. 55 Issue 3, p475; Subject Term: AIRCRAFT industry; Subject Term: ELECTROMAGNETIC pulses; Subject Term: ELECTRIC generators; Subject Term: ELECTRIC lines; Subject Term: ELECTROMAGNETIC theory; Subject Term: TECHNICAL information; Author-Supplied Keyword: Aircraft; Author-Supplied Keyword: Electromagnetic pulse (EMP); Author-Supplied Keyword: electromagnetic theory; Author-Supplied Keyword: EMP radiation effects; Author-Supplied Keyword: Generators; Author-Supplied Keyword: high-altitude nuclear electromagnetic pulse (HEMP); Author-Supplied Keyword: IEC standards; Author-Supplied Keyword: Laboratories; Author-Supplied Keyword: Military aircraft; Author-Supplied Keyword: Power transmission lines; Author-Supplied Keyword: sensors; Author-Supplied Keyword: simulators; Author-Supplied Keyword: test; Company/Entity: INTERNATIONAL Electrotechnical Commission; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 441220 Motorcycle, boat and other motor vehicle dealers; NAICS/Industry Codes: 441228 Motorcycle, ATV, and All Other Motor Vehicle Dealers; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238910 Site Preparation Contractors; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TEMC.2013.2238239 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88206730&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Giri, D. V. AU - Prather, William D. T1 - High-Altitude Electromagnetic Pulse (HEMP) Risetime Evolution of Technology and Standards Exclusively for E1 Environment. JO - IEEE Transactions on Electromagnetic Compatibility JF - IEEE Transactions on Electromagnetic Compatibility Y1 - 2013/06// VL - 55 IS - 3 M3 - Article SP - 484 EP - 491 SN - 00189375 AB - There are many different definitions of the risetime of a transient waveform. In the context of high-altitude electromagnetic pulse (HEMP) standards, the 10–90% risetime of an idealized double exponential waveform has been defined and used for many decades. However, such a risetime definition is not strictly applicable to the transient voltage out of a pulse generator, since no practical switch can close in zero time. In this paper, we discuss various definitions and their applicability. More importantly, pulse power technology has evolved over five decades and the achievable risetimes have come down from 10s of nanoseconds to 10s of picoseconds. As a corollary, the highest achievable voltage gradient has been going upwards of 10^15 V/s. In this paper, we review the definitions of risetime, and trace the evolution of technology and HEMP Standards, exclusively for the E1 environments. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electromagnetic Compatibility is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TIME-domain analysis KW - TRANSIENT analysis KW - ELECTROMAGNETISM KW - ELECTRIC switchgear KW - ELECTRIC potential KW - CAPACITORS KW - ELECTRIC generators KW - Capacitors KW - Field sensors KW - Frequency domain analysis KW - Generators KW - HEMP standards KW - high-altitude electromagnetic pulse (HEMP) KW - measurement systems KW - pulse risetime KW - short pulse KW - Standards KW - Switches KW - Time domain analysis KW - Transient analysis N1 - Accession Number: 88206724; Giri, D. V. 1 Prather, William D. 2; Affiliation: 1: Pro-Tech, Alamo, 2: Air Force Research Laboratory, Kirtland AFB, USA; Source Info: Jun2013, Vol. 55 Issue 3, p484; Subject Term: TIME-domain analysis; Subject Term: TRANSIENT analysis; Subject Term: ELECTROMAGNETISM; Subject Term: ELECTRIC switchgear; Subject Term: ELECTRIC potential; Subject Term: CAPACITORS; Subject Term: ELECTRIC generators; Author-Supplied Keyword: Capacitors; Author-Supplied Keyword: Field sensors; Author-Supplied Keyword: Frequency domain analysis; Author-Supplied Keyword: Generators; Author-Supplied Keyword: HEMP standards; Author-Supplied Keyword: high-altitude electromagnetic pulse (HEMP); Author-Supplied Keyword: measurement systems; Author-Supplied Keyword: pulse risetime; Author-Supplied Keyword: short pulse; Author-Supplied Keyword: Standards; Author-Supplied Keyword: Switches; Author-Supplied Keyword: Time domain analysis; Author-Supplied Keyword: Transient analysis; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 335931 Current-Carrying Wiring Device Manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 335315 Switchgear and switchboard, and relay and industrial control apparatus manufacturing; NAICS/Industry Codes: 335930 Wiring device manufacturing; NAICS/Industry Codes: 335313 Switchgear and Switchboard Apparatus Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TEMC.2012.2235445 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88206724&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wraight, Anthony AU - Prather, William D. AU - Sabath, Frank T1 - Developments in Early-Time (E1) High-Altitude Electromagnetic Pulse (HEMP) Test Methods. JO - IEEE Transactions on Electromagnetic Compatibility JF - IEEE Transactions on Electromagnetic Compatibility Y1 - 2013/06// VL - 55 IS - 3 M3 - Article SP - 492 EP - 499 SN - 00189375 AB - This paper describes developments in high-altitude electromagnetic pulse (HEMP) test methods. More specifically, we describe the most commonly used HEMP test methods and associated measurement systems used to assess systems and equipment to the early-time (E1) effects of HEMP. Short case studies of the application of these test methods are included. Finally, computational electromagnetics (CEM) is a subject that has advanced significantly in recent years. This paper summarizes developments in this area and the supporting role that CEM has when undertaking assessments of the impact of HEMP on systems. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electromagnetic Compatibility is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC pulses KW - TEST methods KW - COMPUTATIONAL electromagnetics KW - APPLICATION software KW - CASE study (Research) KW - Computational electromagnetics (CEM) KW - effects KW - electromagnetic pulse KW - high-altitude electromagnetic (HEMP) KW - standards KW - test methods N1 - Accession Number: 88206740; Wraight, Anthony 1 Prather, William D. 2 Sabath, Frank 3; Affiliation: 1: Ministry of Defence, London, U.K. 2: Air Force Research Laboratory , Kirtland AFB, NM, USA 3: Bundeswehr Research Institute for Protective Technologies and NBC-Protection, Munster, Germany; Source Info: Jun2013, Vol. 55 Issue 3, p492; Subject Term: ELECTROMAGNETIC pulses; Subject Term: TEST methods; Subject Term: COMPUTATIONAL electromagnetics; Subject Term: APPLICATION software; Subject Term: CASE study (Research); Author-Supplied Keyword: Computational electromagnetics (CEM); Author-Supplied Keyword: effects; Author-Supplied Keyword: electromagnetic pulse; Author-Supplied Keyword: high-altitude electromagnetic (HEMP); Author-Supplied Keyword: standards; Author-Supplied Keyword: test methods; NAICS/Industry Codes: 511210 Software Publishers; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 541511 Custom Computer Programming Services; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TEMC.2013.2241442 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88206740&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Prather, William D. AU - Cafferky, Jory AU - Ortiz, Lenny AU - Anderson, Jay T1 - CW Measurements of Electromagnetic Shields. JO - IEEE Transactions on Electromagnetic Compatibility JF - IEEE Transactions on Electromagnetic Compatibility Y1 - 2013/06// VL - 55 IS - 3 M3 - Article SP - 500 EP - 507 SN - 00189375 AB - When designing and qualifying hardened systems to an electromagnetic pulse (EMP) or electromagnetic interference standard, one needs a practical way to measure the effectiveness of the shield. It is not possible to test every system in a threat-level EMP test facility, so alternative methods have been developed. This paper reviews the advances made in low-level continuous wave measurement technology since the last EMC Special Issue published in 1978. These include system-level illumination as well as localized test methods for individual hardening elements. Available illuminating antennas for use on aircraft, ships, and ground-based communications systems are reviewed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electromagnetic Compatibility is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC pulses KW - AIRCRAFT industry KW - ELECTRIC lines KW - ELECTRIC impedance KW - CABLE shielding KW - ELECTRIC resistance measurement KW - Aircraft KW - Cable shielding KW - Continuous wave (CW) KW - Electrical resistance measurement KW - electromagnetic pulse (EMP) system verification KW - hardness surveillance KW - Impedance KW - measurement systems KW - Resistance KW - Transmission line measurements KW - Voltage measurement N1 - Accession Number: 88206731; Prather, William D. 1 Cafferky, Jory 2 Ortiz, Lenny 3 Anderson, Jay 3; Affiliation: 1: Air Force Research Laboratory , Kirtland AFB, Albuquerque, USA 2: EG&G/URS, Inc. , Albuquerque, USA 3: Oklahoma City Air Logistics Center , Tinker AFB, OK, USA; Source Info: Jun2013, Vol. 55 Issue 3, p500; Subject Term: ELECTROMAGNETIC pulses; Subject Term: AIRCRAFT industry; Subject Term: ELECTRIC lines; Subject Term: ELECTRIC impedance; Subject Term: CABLE shielding; Subject Term: ELECTRIC resistance measurement; Author-Supplied Keyword: Aircraft; Author-Supplied Keyword: Cable shielding; Author-Supplied Keyword: Continuous wave (CW); Author-Supplied Keyword: Electrical resistance measurement; Author-Supplied Keyword: electromagnetic pulse (EMP) system verification; Author-Supplied Keyword: hardness surveillance; Author-Supplied Keyword: Impedance; Author-Supplied Keyword: measurement systems; Author-Supplied Keyword: Resistance; Author-Supplied Keyword: Transmission line measurements; Author-Supplied Keyword: Voltage measurement; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 441220 Motorcycle, boat and other motor vehicle dealers; NAICS/Industry Codes: 441228 Motorcycle, ATV, and All Other Motor Vehicle Dealers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238910 Site Preparation Contractors; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TEMC.2012.2237553 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88206731&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Choi, Sukwon AU - Heller, Eric R. AU - Dorsey, Donald AU - Vetury, Ramakrishna AU - Graham, Samuel T1 - Thermometry of AlGaN/GaN HEMTs Using Multispectral Raman Features. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices Y1 - 2013/06// VL - 60 IS - 6 M3 - Article SP - 1898 EP - 1904 SN - 00189383 AB - In this paper, we utilize micro-Raman spectroscopy to measure temperature and stress in state-of-the-art AlGaN/GaN HEMTs. A rigorous discussion on the physical accuracy, precision, and precautions for diverse Raman thermometry methods is developed. Thermometry techniques utilizing shifts in a single Raman Stokes peak position underpredict the channel temperature due to induction of operational thermoelastic stress in operating devices. Utilizing the change in phonon linewidth by employing a proper reference condition gives true temperature results. Making use of frequency shifts in both the E2(high) and A1(LO) phonon modes offers accurate and time-efficient means to determine the state of temperature and thermal stress in operating AlGaN/GaN HEMTs presuming that linear relations between phonon frequencies and temperature/stress are well determined. Useful applications of this method such as monitoring stress in GaN wafers between fabrication steps and Raman thermography on AlGaN/GaN HEMTs are demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOMETRY KW - ALUMINUM compounds KW - GALLIUM nitride KW - TEMPERATURE measurements KW - STRAINS & stresses (Mechanics) KW - RAMAN spectroscopy KW - Gallium nitride KW - HEMTs KW - Raman scattering KW - temperature measurement N1 - Accession Number: 87693844; Choi, Sukwon 1 Heller, Eric R. 2 Dorsey, Donald 2 Vetury, Ramakrishna 3 Graham, Samuel 1; Affiliation: 1: Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA 3: Power Broadband Business Unit, RFMD, Charlotte, NC, USA; Source Info: Jun2013, Vol. 60 Issue 6, p1898; Subject Term: THERMOMETRY; Subject Term: ALUMINUM compounds; Subject Term: GALLIUM nitride; Subject Term: TEMPERATURE measurements; Subject Term: STRAINS & stresses (Mechanics); Subject Term: RAMAN spectroscopy; Author-Supplied Keyword: Gallium nitride; Author-Supplied Keyword: HEMTs; Author-Supplied Keyword: Raman scattering; Author-Supplied Keyword: temperature measurement; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TED.2013.2255102 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87693844&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shiffler, Don AU - Seviour, Rebecca AU - Luchinskaya, Elena AU - Stranford, Erin AU - Tang, Wilkin AU - French, David T1 - Study of Split-Ring Resonators as a Metamaterial for High-Power Microwave Power Transmission and the Role of Defects. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2013/06// VL - 41 IS - 6 M3 - Article SP - 1679 EP - 1685 SN - 00933813 AB - Microwave metamaterials show promise in numerous low-power applications, ranging from strip lines to antennas. In general, metamaterials allow microwave designers to obtain electromagnetic characteristics not typically available in nature, leading to new behavior as well as reductions in the size of typical devices. High-power microwave (HPM) sources were efficient in the conventional microwave source community. We consider a specific use of metamaterials as a method to reduce the size of waveguide used for power transmission, particularly, a configuration in which an array of split-ring resonators (SRRs), forming a “mu-negative” structure, allows transmission of power in a waveguide well below the cutoff frequency. This configuration would not be used in an actual HPM device, but explores the methods and considerations that might be required for developing a metamaterial structure for either making HPM sources more compact or developing new types of interaction at these high powers. For any HPM application, a microwave structure must be able to sustain high electric and magnetic fields, as well as high peak and possibly average power. The challenge for metamaterials consists of devising the subwavelength structures (a defining characteristic of metamaterials) that can sustain such fields. In particular, one must understand the sensitivity of any metamaterial system to changes in the individual elements, which in high power pertains mainly to the loss of an individual resonator element. As such a sample system, we explore the physical operating characteristics of the waveguide system loaded with an array of SRRs, particularly the role of defects on its properties. Such defects would form an important feature in any high-power application in which subwavelength structures can be damaged by high field stresses. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAMATERIALS KW - RESEARCH KW - POWER transmission KW - ANTENNAS (Electronics) KW - WAVELENGTHS KW - WAVEGUIDES KW - ELECTROMAGNETISM KW - High power microwave generation KW - metamaterials KW - power transmission N1 - Accession Number: 88058035; Shiffler, Don 1 Seviour, Rebecca 2 Luchinskaya, Elena 2 Stranford, Erin 3 Tang, Wilkin 1 French, David 1; Affiliation: 1: Air Force Research Laboratory and Directed Energy Directorate, Kirtland, NM, USA 2: Lancaster University, Lancaster, U.K. 3: Cornell University, Cornell, Ithaca, NY, USA; Source Info: Jun2013, Vol. 41 Issue 6, p1679; Subject Term: METAMATERIALS; Subject Term: RESEARCH; Subject Term: POWER transmission; Subject Term: ANTENNAS (Electronics); Subject Term: WAVELENGTHS; Subject Term: WAVEGUIDES; Subject Term: ELECTROMAGNETISM; Author-Supplied Keyword: High power microwave generation; Author-Supplied Keyword: metamaterials; Author-Supplied Keyword: power transmission; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TPS.2013.2251669 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88058035&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jha, Sushant K. AU - John, Reji AU - Larsen, James M. T1 - Incorporating small fatigue crack growth in probabilistic life prediction: Effect of stress ratio in Ti–6Al–2Sn–4Zr–6Mo JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2013/06// VL - 51 M3 - Article SP - 83 EP - 95 SN - 01421123 AB - Abstract: The effect of stress ratio on the statistical aspects of small fatigue crack growth behavior was studied in a duplex microstructure of Ti–6Al–2Sn–4Zr–6Mo (Ti-6-2-4-6) at 260°C with particular emphasis on incorporating small-crack data into probabilistic life prediction and the influence of stress ratio on probabilistic lifetime limits. A Focused Ion Beam (FIB) was used to machine micro-notches in test specimens, which served as crack-initiation sites and enabled the acquisition of multiple small-crack growth data sets from single experiment. Stress ratios of −0.5, 0.05, and 0.5 were employed, and small-crack growth was monitored by the acetate replication method. Qualitatively, change in the stress ratio produced almost negligible influence on the small-crack growth behavior when plotted as crack growth rate (da/dN) vs. applied stress intensity factor range (ΔK). A probabilistic method was employed to represent the variability in the small-crack growth behavior and the statistical differences with respect to stress ratio where a method of optimization of the small-crack growth model parameters, based on a minimization of the error between the predicted and the measured crack length vs. cycles (a vs. N) data, was used. In spite of qualitative similarity, differences in the statistical parameters of small-crack growth as a function of stress ratio were found to be significant in life prediction. The methods for representation and probabilistic treatment of small-crack data were also shown to be important factors in incorporation of the small-crack regime in probabilistic life prediction. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE crack growth KW - PREDICTION models KW - STRAINS & stresses (Mechanics) KW - MICROSTRUCTURE KW - DATA analysis KW - FOCUSED ion beams KW - Life prediction KW - Small fatigue crack KW - Stress ratio KW - Ti–6Al–2Sn–4Zr–6Mo N1 - Accession Number: 86394513; Jha, Sushant K. 1,2; Email Address: sushantjha@hotmail.com John, Reji 1 Larsen, James M. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson Air Force Base, OH 45433, United States 2: Universal Technology Corporation, Dayton, OH 45432, United States; Source Info: Jun2013, Vol. 51, p83; Subject Term: FATIGUE crack growth; Subject Term: PREDICTION models; Subject Term: STRAINS & stresses (Mechanics); Subject Term: MICROSTRUCTURE; Subject Term: DATA analysis; Subject Term: FOCUSED ion beams; Author-Supplied Keyword: Life prediction; Author-Supplied Keyword: Small fatigue crack; Author-Supplied Keyword: Stress ratio; Author-Supplied Keyword: Ti–6Al–2Sn–4Zr–6Mo; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.ijfatigue.2013.01.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86394513&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Watjen, J.I. AU - Bright, T.J. AU - Zhang, Z.M. AU - Muratore, C. AU - Voevodin, A.A. T1 - Spectral radiative properties of tungsten thin films in the infrared. JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2013/06// VL - 61 M3 - Article SP - 106 EP - 113 SN - 00179310 AB - Abstract: Tungsten is an important material for energy harvesting applications due to its high chemical and thermal stability; however, the difficulty in obtaining single-crystal films leads to a large variation in the optical properties. The present work focuses on the radiative and optical properties of thin tungsten films at wavelengths from 1 to 20μm (wavenumbers from 10,000 to 500cm−1), considering microstructural variations. Four films of a nominal thickness of 70nm were deposited on silicon substrates using DC magnetron sputtering, and the effect of pre- and post-deposition treatments was investigated. Several analytical instruments were used to characterize the crystalline phases and microstructures, including X-ray diffraction, Rutherford backscattering, X-ray photoelectron spectroscopy, and scanning electron microscopy. The transmittance and reflectance of the film–substrate composites were measured at room temperature using a Fourier-transform infrared spectrometer. The dielectric function of each sample was obtained by fitting the measured radiative properties using the Drude–Lorentz dispersion model. The difference in the radiative properties between samples was analyzed and related to the crystalline phases and density. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TUNGSTEN films KW - ENERGY harvesting KW - THERMAL stability KW - SINGLE crystals KW - OPTICAL properties KW - MICROSTRUCTURE KW - THICKNESS measurement KW - X-ray photoelectron spectroscopy KW - Dielectric function KW - Infrared KW - Radiative properties KW - Thin film KW - Tungsten N1 - Accession Number: 89162241; Watjen, J.I. 1 Bright, T.J. 1 Zhang, Z.M. 1; Email Address: zhuomin.zhang@me.gatech.edu Muratore, C. 2 Voevodin, A.A. 2; Affiliation: 1: The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA 2: Thermal Sciences and Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, OH 45433, USA; Source Info: Jun2013, Vol. 61, p106; Subject Term: TUNGSTEN films; Subject Term: ENERGY harvesting; Subject Term: THERMAL stability; Subject Term: SINGLE crystals; Subject Term: OPTICAL properties; Subject Term: MICROSTRUCTURE; Subject Term: THICKNESS measurement; Subject Term: X-ray photoelectron spectroscopy; Author-Supplied Keyword: Dielectric function; Author-Supplied Keyword: Infrared; Author-Supplied Keyword: Radiative properties; Author-Supplied Keyword: Thin film; Author-Supplied Keyword: Tungsten; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2013.01.063 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89162241&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ghommem, M. AU - Hajj, M. R. AU - Mook, D. T. AU - Stanford, B. K. AU - Beran, P. S. AU - Watson, L. T. T1 - Global-Local Optimization of Flapping Kinematics in Hovering Flight. JO - International Journal of Micro Air Vehicles JF - International Journal of Micro Air Vehicles Y1 - 2013/06// VL - 5 IS - 2 M3 - Article SP - 109 EP - 126 SN - 17568293 AB - The kinematics of a hovering wing are optimized by combining the 2-d unsteady vortex lattice method with a hybrid of global and local optimization algorithms. The objective is to minimize the required aerodynamic power under a lift constraint. The hybrid optimization is used to efficiently navigate the complex design space due to wing-wake interference present in hovering aerodynamics. The flapping wing is chosen so that its chord length and flapping frequency match the morphological and flight properties of two insects with different masses. The results suggest that imposing a delay between the different oscillatory motions defining the flapping kinematics, and controlling the way through which the wing rotates at the end of each half stroke can improve aerodynamic power under a lift constraint. Furthermore, our optimization analysis identified optimal kinematics that agree fairly well with observed insect kinematics, as well as previously published numerical results. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Micro Air Vehicles is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - KINEMATICS KW - INSECT flight KW - INSECTS -- Morphology KW - VORTEX lattice method KW - GLOBAL optimization KW - hovering flights KW - kinematics optimization KW - Unsteady vortex lattice method N1 - Accession Number: 89395605; Ghommem, M. 1 Hajj, M. R. 2 Mook, D. T. 2 Stanford, B. K. 3 Beran, P. S. 3 Watson, L. T. 4; Affiliation: 1: Center for Numerical Porous Media (NumPor), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia 2: Department of Engineering Science and Mechanics Virginia Polytechnic Institute, State University, Blacksburg, Virginia 24061, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7542, USA 4: Department of Computer Science and Mathematics Virginia Polytechnic Institute, State University, Blacksburg, Virginia 24061, USA; Source Info: Jun2013, Vol. 5 Issue 2, p109; Subject Term: KINEMATICS; Subject Term: INSECT flight; Subject Term: INSECTS -- Morphology; Subject Term: VORTEX lattice method; Subject Term: GLOBAL optimization; Author-Supplied Keyword: hovering flights; Author-Supplied Keyword: kinematics optimization; Author-Supplied Keyword: Unsteady vortex lattice method; Number of Pages: 18p; Document Type: Article L3 - 10.1260/1756-8293.5.2.109 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89395605&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chong, Xinyuan AU - Jiang, Naibo AU - Zhang, Zhili AU - Roy, Sukesh AU - Gord, James T1 - Plasmonic resonance-enhanced local photothermal energy deposition by aluminum nanoparticles. JO - Journal of Nanoparticle Research JF - Journal of Nanoparticle Research Y1 - 2013/06// VL - 15 IS - 6 M3 - Article SP - 1 EP - 10 SN - 13880764 AB - Local energy deposition of aluminum nanoparticles (Al NPs) by localized surface plasmon resonance-enhanced photothermal effects is demonstrated. Low-power light stimuli are efficiently and locally concentrated to trigger the oxidation reactions of Al NPs because of the large ohmic absorption and high reactivity of the Al. Numerical simulations show that both ultraviolet and visible light are more efficient than infrared light for photothermal energy coupling. The natural oxidation layer of alumina is found to have minimum impact on the energy deposition because of its negligible dielectric losses. The near-field distributions of the electric field indicate that slight aggregation induces much higher local enhancement, especially at the interface region of multiple contacting nanoparticles. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nanoparticle Research is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMONS (Physics) KW - PHOTOTHERMAL effect KW - NANOPARTICLES KW - ABSORPTION KW - COMPUTER simulation KW - Aluminum nanoparticles KW - Energy deposition KW - Photothermal KW - Plasmonics KW - Reactivity N1 - Accession Number: 88368487; Chong, Xinyuan 1 Jiang, Naibo 2 Zhang, Zhili 1; Email Address: zzhang24@utk.edu Roy, Sukesh 2 Gord, James 3; Affiliation: 1: Mechanical, Aerospace and Biomedical Engineering Department, University of Tennessee, Knoxville 37996 USA 2: Spectral Energies, LLC, 5100 Springfield Street, Suite 301 Dayton 45431 USA 3: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson Air Force Base, Dayton 45433 USA; Source Info: Jun2013, Vol. 15 Issue 6, p1; Subject Term: PLASMONS (Physics); Subject Term: PHOTOTHERMAL effect; Subject Term: NANOPARTICLES; Subject Term: ABSORPTION; Subject Term: COMPUTER simulation; Author-Supplied Keyword: Aluminum nanoparticles; Author-Supplied Keyword: Energy deposition; Author-Supplied Keyword: Photothermal; Author-Supplied Keyword: Plasmonics; Author-Supplied Keyword: Reactivity; Number of Pages: 10p; Illustrations: 1 Black and White Photograph, 9 Graphs; Document Type: Article L3 - 10.1007/s11051-013-1678-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88368487&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thomas, Brandon AU - Bunker, Christopher AU - Guliants, Elena AU - Hayes, Sophia AU - Kheyfets, Arthur AU - Wentz, Katherine AU - Buckner, Steven AU - Jelliss, Paul T1 - Synthesis of aluminum nanoparticles capped with copolymerizable epoxides. JO - Journal of Nanoparticle Research JF - Journal of Nanoparticle Research Y1 - 2013/06// VL - 15 IS - 6 M3 - Article SP - 1 EP - 9 SN - 13880764 AB - We report on the synthesis of air-stable aluminum nanoparticles (Al NPs) capped with 1,2-epoxy-9-decene. Long-chain epoxides have proven to be effective capping agents for Al NPs as the epoxide ring is highly susceptible to ring-opening polymerization, leading to the formation of putative polyether loops on the nascent Al NP surface. However, these materials are observed to degrade within several hours to days following exposure to ambient air. By inducing polymerization of the additional terminal alkene functionality on the epoxide, we have produced Al NPs that exhibit both a shelf life of ~6 weeks and a high active Al content. Transmission electron microscopy confirms that these spherical nanostructures, ~25 nm in diameter, are embedded in a covalently bound polymer matrix that serves as a prophylactic barrier against water/air (HO/O) degradation, and Al solid-state NMR is used to nondestructively confirm the presence of both metallic Al and oxidized Al. In addition, we have induced polymerization of the epoxide terminal alkene functionality with a long-chain diene monomer, 1,13-tetradecadiene, leading to the formation of Al NPs protected by an extremely hydrophobic polymer matrix. These core-shell nanomaterials also have high active Al contents along with extremely long shelf lives (up to 6 months upon air exposure). [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nanoparticle Research is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM KW - NANOPARTICLES KW - COPOLYMERIZATION KW - EPOXY compounds KW - POLYMERIZATION KW - Alkenes KW - Core-shell aluminum nanoparticles KW - Energetic nanomaterials KW - Epoxides N1 - Accession Number: 88368519; Thomas, Brandon 1 Bunker, Christopher 2 Guliants, Elena 3 Hayes, Sophia 4 Kheyfets, Arthur 1 Wentz, Katherine 4 Buckner, Steven 1; Email Address: buckners@slu.edu Jelliss, Paul 1; Email Address: jellissp@slu.edu; Affiliation: 1: Department of Chemistry, Saint Louis University, St. Louis 63103 USA 2: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Fairborn 45433 USA 3: Department of Electrical & Computer Engineering, University of Dayton Research Institute, Dayton 45469 USA 4: Department of Chemistry, Washington University, One Brookings Dr. St. Louis 63130 USA; Source Info: Jun2013, Vol. 15 Issue 6, p1; Subject Term: ALUMINUM; Subject Term: NANOPARTICLES; Subject Term: COPOLYMERIZATION; Subject Term: EPOXY compounds; Subject Term: POLYMERIZATION; Author-Supplied Keyword: Alkenes; Author-Supplied Keyword: Core-shell aluminum nanoparticles; Author-Supplied Keyword: Energetic nanomaterials; Author-Supplied Keyword: Epoxides; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; Number of Pages: 9p; Illustrations: 1 Black and White Photograph, 1 Diagram, 2 Charts, 7 Graphs; Document Type: Article L3 - 10.1007/s11051-013-1729-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88368519&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heller, Eric AU - Choi, Sukwon AU - Dorsey, Donald AU - Vetury, Ramakrishna AU - Graham, Samuel T1 - Electrical and structural dependence of operating temperature of AlGaN/GaN HEMTs. JO - Microelectronics Reliability JF - Microelectronics Reliability Y1 - 2013/06// VL - 53 IS - 6 M3 - Article SP - 872 EP - 877 SN - 00262714 AB - Abstract: Understanding the distribution of the considerable heat generated in the active region of high power AlGaN/GaN high electron mobility transistors (HEMTs) at the sub-micron length scales relevant to the failures being observed in these devices is crucial for understanding device performance and reliability. In addition, electrical bias conditions and structural characteristics such as field plates alter the electric field distribution and thermal path within the device leading to changes in the heat generation profile across the channel. This in turn influences the value and location of the device peak temperature and the channel to ambient (or case or base-plate) thermal resistance. The channel temperature distribution of AlGaN/GaN HEMT structures with and without source connected field plates were examined via micro-Raman spectroscopy and coupled electro-thermal simulation. For both type of structures, high V ds conditions lead to significantly higher channel temperature compared to that for low V ds conditions for the same power dissipation level. This is important because the industry standard Arrhenius relation assumes the total power is sufficient to describe the device channel temperature and that the bias condition is irrelevant [1]. We explore the level of agreement between modeling and experiment, and also the extent to which variability in input parameters for the modeling affects model results. We show that operating bias condition has a significant role in device reliability by altering value and location of the peak temperature, which then alters the type and rate of thermally induced degradation taking place at critical locations such as the drain side corner of the gate. Specifically, care must be taken when extrapolating results of an accelerated life test to usage conditions at dissimilar bias conditions to consider if the results will be applicable. [Copyright &y& Elsevier] AB - Copyright of Microelectronics Reliability is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM alloys KW - MODULATION-doped field-effect transistors KW - METALS -- Microstructure KW - METALS -- Electric properties KW - PLATES (Engineering) KW - TEMPERATURE distribution KW - PERFORMANCE evaluation KW - channel temperature (T CH) KW - high electron mobility transistors (HEMT) KW - source connected field plate (SCFP) KW - tip enhanced Raman spectroscopy (TERS) KW - X-ray diffraction (XRD) N1 - Accession Number: 89104910; Heller, Eric 1; Email Address: eric.heller@wpafb.af.mil Choi, Sukwon 2; Email Address: sukwon.choi@gatech.edu Dorsey, Donald 1 Vetury, Ramakrishna 3; Email Address: RVetury@rfmd.com Graham, Samuel 2; Email Address: sgraham@gatech.edu; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 2: Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA 3: Defense and Power Business Unit, RFMD, Charlotte, NC 28269, USA; Source Info: Jun2013, Vol. 53 Issue 6, p872; Subject Term: ALUMINUM alloys; Subject Term: MODULATION-doped field-effect transistors; Subject Term: METALS -- Microstructure; Subject Term: METALS -- Electric properties; Subject Term: PLATES (Engineering); Subject Term: TEMPERATURE distribution; Subject Term: PERFORMANCE evaluation; Author-Supplied Keyword: channel temperature (T CH); Author-Supplied Keyword: high electron mobility transistors (HEMT); Author-Supplied Keyword: source connected field plate (SCFP); Author-Supplied Keyword: tip enhanced Raman spectroscopy (TERS); Author-Supplied Keyword: X-ray diffraction (XRD); NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 332313 Plate Work Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.microrel.2013.03.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89104910&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Majchrzak, Ann AU - Wagner, Christian AU - Yates, Dave T1 - THE IMPACT OF SHAPING ON KNOWLEDGE REUSE FOR ORGANIZATIONAL IMPROVEMENT WITH WIKIS. JO - MIS Quarterly JF - MIS Quarterly Y1 - 2013/06// VL - 37 IS - 2 M3 - Article SP - 455 EP - A12 SN - 02767783 AB - In this study, we explore the Wiki affordance of enabling shaping behavior within organizational intranets supported by Wikis. Shaping is the continuous revision of one's own and others' contributions to a Wiki. Shaping promotes knowledge reuse through improved knowledge integration. Recognizing and clarifying the role of shaping allows us to theorize new ways in which knowledge resources affect knowledge reuse. We examine the role of three knowledge resources of a Wiki contributor: knowledge depth, knowledge breadth, and assessment of the level of development of the Wiki community's transactive memory system. We offer preliminary evidence based on a sample of experienced organizational Wiki users that the three different knowledge resources have differential effects on shaping, that these effects differ from the effects on the more common user behavior of simply adding domain knowledge to a Wiki, and that shaping and adding each independently affect contributors' perceptions that their knowledge in the Wiki has been reused for organizational improvement. By empirically distinguishing between the different knowledge antecedents and consequences of shaping and adding, we derive implications for theory and research on knowledge integration and reuse. [ABSTRACT FROM AUTHOR] AB - Copyright of MIS Quarterly is the property of MIS Quarterly and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIKIS (Computer science) KW - ORGANIZATIONAL change KW - INTRANETS (Computer networks) KW - INTEGRATION (Theory of knowledge) KW - INFORMATION sharing KW - KNOWLEDGE management KW - Intranet KW - KMS KW - knowledge breadth KW - knowledge depth KW - knowledge management KW - knowledge reuse KW - shaping KW - transactive memory KW - Wiki N1 - Accession Number: 87370679; Majchrzak, Ann 1,2; Email Address: majchrza@usc.edu Wagner, Christian 3,4; Email Address: c.wagner@cityu.edu.hk Yates, Dave 5; Email Address: hdjryates@gmail.com; Affiliation: 1: Information Systems, Marshall School of Business, University of Southern California, Los Angeles, CA 90089 U.S.A. 2: Esade Business School, Universidad Ramon Llull, Barcelona, SPAIN 3: School of Creative Media and Department of Information Systems, City University of Hong Kong 4: Tat Chee Avenue, Kowloon, Hong Kong SAR 5: United States Air Force; Source Info: Jun2013, Vol. 37 Issue 2, p455; Subject Term: WIKIS (Computer science); Subject Term: ORGANIZATIONAL change; Subject Term: INTRANETS (Computer networks); Subject Term: INTEGRATION (Theory of knowledge); Subject Term: INFORMATION sharing; Subject Term: KNOWLEDGE management; Author-Supplied Keyword: Intranet; Author-Supplied Keyword: KMS; Author-Supplied Keyword: knowledge breadth; Author-Supplied Keyword: knowledge depth; Author-Supplied Keyword: knowledge management; Author-Supplied Keyword: knowledge reuse; Author-Supplied Keyword: shaping; Author-Supplied Keyword: transactive memory; Author-Supplied Keyword: Wiki; Number of Pages: 27p; Illustrations: 2 Color Photographs, 1 Diagram, 10 Charts, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87370679&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mohsin, Kaji Muhammad AU - Ashok Srivastava AU - Sharma, Ashwani K. AU - Mayberry, Clay T1 - A Thermal Model for Carbon Nanotube Interconnects. JO - Nanomaterials (2079-4991) JF - Nanomaterials (2079-4991) Y1 - 2013/06// VL - 3 IS - 2 M3 - Article SP - 229 EP - 241 SN - 20794991 AB - In this work, we have studied Joule heating in carbon nanotube based very large scale integration (VLSI) interconnects and incorporated Joule heating influenced scattering in our previously developed current transport model. The theoretical model explains breakdown in carbon nanotube resistance which limits the current density. We have also studied scattering parameters of carbon nanotube (CNT) interconnects and compared with the earlier work. For 1 µm length single-wall carbon nanotube, 3 dB frequency in S12 parameter reduces to ~120 GHz from 1 THz considering Joule heating. It has been found that bias voltage has little effect on scattering parameters, while length has very strong effect on scattering parameters. [ABSTRACT FROM AUTHOR] AB - Copyright of Nanomaterials (2079-4991) is the property of MDPI Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VERY large scale integration of circuits KW - RESEARCH KW - CARBON nanotubes KW - RESISTANCE heating KW - ELECTRIC potential -- Measurement KW - ELECTRIC breakdown KW - Joule heating KW - scattering KW - SWCNT KW - VLSI interconnect N1 - Accession Number: 89461926; Mohsin, Kaji Muhammad 1; Email Address: kmohsi1@lsu.edu Ashok Srivastava 1; Email Address: ashok@ece.lsu.edu Sharma, Ashwani K. 2; Email Address: ashwani.sharma@kirtland.af.mil Mayberry, Clay 2; Email Address: clay.mayberry@kirtland.af.mil; Affiliation: 1: School of Electrical Engineering and Computer Science, Louisiana State University, Baton Rouge, LA 70803, USA 2: Air Force Research Laboratory/Space Electronics Branch, Space Vehicles Directorate, Electronics Foundations Group, 3550 Aberdeen Avenue SE, Kirtland, NM 87117, USA; Source Info: Jun2013, Vol. 3 Issue 2, p229; Subject Term: VERY large scale integration of circuits; Subject Term: RESEARCH; Subject Term: CARBON nanotubes; Subject Term: RESISTANCE heating; Subject Term: ELECTRIC potential -- Measurement; Subject Term: ELECTRIC breakdown; Author-Supplied Keyword: Joule heating; Author-Supplied Keyword: scattering; Author-Supplied Keyword: SWCNT; Author-Supplied Keyword: VLSI interconnect; Number of Pages: 13p; Document Type: Article L3 - 10.3390/nano3020229 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89461926&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Allen, Monica S. AU - Allen, Jeffery W. AU - Wenner, Brett R. AU - Look, David C. AU - Leedy, Kevin D. T1 - Application of highly conductive ZnO to the excitation of long-range plasmons in symmetric hybrid waveguides. JO - Optical Engineering JF - Optical Engineering Y1 - 2013/06// VL - 52 IS - 6 M3 - Article SP - 1 EP - 7 SN - 00913286 AB - Plasmonics combines attractive features of nanoelectronics and optics enabling highly integrated, subwavelength optical and electronic circuits. The wide application of plasmonic devices hinges on practical demonstrations with low losses at optical and infrared wavelengths. In this frequency regime, noble metals suffer from large losses that are difficult to compensate by adding gain material. Transparent conducting oxides, e.g., ZnO, are good alternatives to metals for plasmonic applications in the optical regime since they exhibit high conductivity and relatively small negative real permittivity values. We study Ga-doped ZnO layers grown on Al2O3 at 200°C by pulsed laser deposition in Ar ambient. The bulk electrical properties, determined by Hall effect, were ρ 2.93 x 10-4 Ω-cm; µ = 25.5 cm²/V-s; and n = 8.36 x 1020 cm³. These values of µ and n were used to predict optical properties through the Drude dielectric function. The optical and electrical properties of the material were used to design insulator-metal-insulator (in our case, ZnO embedded in polymer) waveguides for long-range plasmons using full-wave electromagnetic models built with finite element method simulations. The models were used to predict the effect of device geometry on propagation length and losses of the plasmon mode. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL waveguides KW - RESEARCH KW - NANOELECTRONICS KW - WAVELENGTHS KW - ELECTRONIC circuits KW - PERMITTIVITY KW - PULSED laser deposition KW - OPTICAL properties KW - PLASMONS (Physics) KW - conducting oxide KW - plasmon KW - subwavelength KW - transparent KW - waveguide N1 - Accession Number: 92987593; Allen, Monica S. 1; Email Address: Monica.Allen@wpafb.af.mil Allen, Jeffery W. 1 Wenner, Brett R. 1 Look, David C. 1,2,3 Leedy, Kevin D. 1,3; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 2: Wright State University, Semiconductor Research Center, Dayton, Ohio 45435 3: Wyle Laboratories Inc., 2601 Mission Point Boulevard, Suite 300, Dayton, Ohio 45431; Source Info: Jun2013, Vol. 52 Issue 6, p1; Subject Term: OPTICAL waveguides; Subject Term: RESEARCH; Subject Term: NANOELECTRONICS; Subject Term: WAVELENGTHS; Subject Term: ELECTRONIC circuits; Subject Term: PERMITTIVITY; Subject Term: PULSED laser deposition; Subject Term: OPTICAL properties; Subject Term: PLASMONS (Physics); Author-Supplied Keyword: conducting oxide; Author-Supplied Keyword: plasmon; Author-Supplied Keyword: subwavelength; Author-Supplied Keyword: transparent; Author-Supplied Keyword: waveguide; Number of Pages: 7p; Document Type: Article L3 - 10.1117/1.OE.52.6.064603 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92987593&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eismann, Michael AU - Perconti, Philip T1 - Infrared Systems. JO - Optical Engineering JF - Optical Engineering Y1 - 2013/06// VL - 52 IS - 6 M3 - Article SP - 1 EP - 2 SN - 00913286 AB - An introduction is presented in which the editor discusses various reports within the issue on topics including novel infrared sensor system concepts, infrared optics and camera design, and the use of infrared systems in earth remote sensing applications. KW - INFRARED detectors KW - OPTICAL devices KW - REMOTE sensing N1 - Accession Number: 92987572; Eismann, Michael 1; Email Address: michael.eismann@wpafb.af.mil Perconti, Philip 2; Email Address: philip.perconti.civ@mail.mil; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright Patterson AFB, Ohio 45433 2: Army Research Laboratory, Sensors & Electron Devices Directorate, Adelphi, Maryland 20783; Source Info: Jun2013, Vol. 52 Issue 6, p1; Subject Term: INFRARED detectors; Subject Term: OPTICAL devices; Subject Term: REMOTE sensing; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92987572&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - LeVan, Paul D. T1 - Space-based hyperspectral technologies for the thermal infrared. JO - Optical Engineering JF - Optical Engineering Y1 - 2013/06// VL - 52 IS - 6 M3 - Article SP - 1 EP - 9 SN - 00913286 AB - Various approaches now exist for obtaining spectral imagery over a broad range of infrared wavelengths. One approach involves the use of a single grating element in two grating orders with dualband focal plane array (FPA) technology. This approach offers greater efficiency over the mid-wave infrared and long-wave infrared and eliminates the need for separate FPAs, dispersing elements, and optical beamsplitters. Another approach achieves similar results by exploiting an FPA which has a broad wavelength response with an innovative grating which has useable efficiency that extends beyond the single octave limits of traditional gratings. Significant advantages result, in either case, for space-based hyperspectral imagers, for which a reduction in cryo-cooled mass translates into prodigious savings in overall payloadmass, cryo-cooling requirements, and waste heat removal. By contrast, longer term approaches might realize infrared "hyperspectral pixels" in two-dimensional imaging FPAs. In this case, each pixel would detect different wavelengths of radiation, at different depths, and the resulting "spectral photocurrents" would be transported to read-out circuitry through a vertical grid of electrical contacts. Although not yet realized in practice, the conceptual basis for accomplishing this, with the widely available HgCdTe detector material, has been described. With regard to employment, space-based thermal hyperspectral imaging is characterized by coarser ground resolution as a result of aperture diameter limitations and diffraction considerations at the longer infrared wavelengths. The resulting subpixel detections, based on spectral signature, are often complementary with higher resolution, shorter wavelength, panchromatic imagery. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERSPECTRAL imaging systems KW - RESEARCH KW - WAVELENGTHS KW - FOCAL plane arrays sensors KW - INFRARED imaging KW - PHOTOCURRENTS KW - focal plane array KW - hyperspectral KW - infrared KW - multiwaveband N1 - Accession Number: 92987573; LeVan, Paul D. 1; Email Address: Paul.levan@kirtland.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Avenue SE, Kirtland AFB, NM 87117-5776; Source Info: Jun2013, Vol. 52 Issue 6, p1; Subject Term: HYPERSPECTRAL imaging systems; Subject Term: RESEARCH; Subject Term: WAVELENGTHS; Subject Term: FOCAL plane arrays sensors; Subject Term: INFRARED imaging; Subject Term: PHOTOCURRENTS; Author-Supplied Keyword: focal plane array; Author-Supplied Keyword: hyperspectral; Author-Supplied Keyword: infrared; Author-Supplied Keyword: multiwaveband; Number of Pages: 9p; Document Type: Article L3 - 10.1117/1.OE.52.6.061311 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92987573&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mastroianni, George R. T1 - Looking Back: Understanding Abu Ghraib. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College Y1 - 2013///Summer2013 VL - 43 IS - 2 M3 - Article SP - 53 EP - 65 SN - 00311723 AB - A decade ago, in the autumn of 2003, a small group of soldiers criminally abused detainees at the Abu Ghraib prison in Iraq. Two divergent narratives explaining these events emerged: a "bad apple" narrative and a "bad barrel" narrative. Neither does justice to the complex interplay of policy, organizational, and individual factors that contributed to these tragic events. A perfect storm of poor leadership, chaotic and confusing policy changes, and a small group of corrupt and immoral soldiers produced this fiasco with global consequences. [ABSTRACT FROM AUTHOR] AB - Copyright of Parameters: U.S. Army War College is the property of U.S. Army War College and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRISONS KW - MILITARY personnel -- Abuse of KW - MILITARY personnel KW - MILITARY detainees KW - MILITARY interrogation KW - IRAQ KW - SEXUAL behavior KW - MYERS, Gary N1 - Accession Number: 91578880; Mastroianni, George R. 1; Affiliation: 1: Professor of Psychology, United States Air Force Academy, Colorado Spring; Source Info: Summer2013, Vol. 43 Issue 2, p53; Subject Term: PRISONS; Subject Term: MILITARY personnel -- Abuse of; Subject Term: MILITARY personnel; Subject Term: MILITARY detainees; Subject Term: MILITARY interrogation; Subject Term: IRAQ; Subject Term: SEXUAL behavior; People: MYERS, Gary; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91578880&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Panasyuk, George Y. AU - Yerkes, Kirk L. T1 - Size effects in long-term quasistatic heat transport. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2013/06// VL - 87 IS - 6-A M3 - Article SP - 1 EP - 12 SN - 15393755 AB - We consider finite-size effects on heat transfer between thermal reservoirs mediated by a quantum system, where the number of modes in each reservoir is finite. Our approach is based on the generalized quantum Langevin equation and the thermal reservoirs are described as ensembles of oscillators within the Drude-Ullersma model. A general expression for the heat current between the thermal reservoirs in the long-time quasistatic regime, when an observation time is of the order of ?-1 and ? is the mode spacing constant of a thermal reservoir, is obtained. The resulting equations that govern the long-time relaxation for the mode temperatures and the average temperatures of the reservoirs are derived and approximate analytical solutions are found. The obtained time dependencies of the temperatures and the resulting heat current reveal peculiarities at t = 2nm/? with non-negative integers m and the heat current vanishes nonmonotonically when t ?8. The validity of Fourier's law for a chain of finite-size macroscopic subsystems is considered. As is shown, for characteristic times of the order of ?-1 the temperatures of subsystems' modes deviate from each other and the validity of Fourier's law cannot be established. In a case when deviations of initial temperatures of the subsystems from their average value are small, t ?8 asymptotic values for the mode temperatures do not depend on a mode's number and are the same as if Fourier's law were valid for all times. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM mechanics KW - HEAT KW - QUASISTATIC processes KW - THERMODYNAMIC equilibrium KW - TEMPERATURE N1 - Accession Number: 89578438; Panasyuk, George Y. 1; Email Address: George.Panasyuk.ctr@wpafb.af.mil Yerkes, Kirk L. 1; Affiliation: 1: Aerospace Systems Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: Jun2013, Vol. 87 Issue 6-A, p1; Subject Term: QUANTUM mechanics; Subject Term: HEAT; Subject Term: QUASISTATIC processes; Subject Term: THERMODYNAMIC equilibrium; Subject Term: TEMPERATURE; Number of Pages: 12p; Document Type: Article L3 - 10.1103/PhysRevE.87.062118 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89578438&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Calderon, D. E. AU - Wang, Z. AU - Gursul, I. AU - Visbal, M. R. T1 - Volumetric measurements and simulations of the vortex structures generated by low aspect ratio plunging wings. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2013/06// VL - 25 IS - 6 M3 - Article SP - 067102 EP - 067102-22 PB - American Institute of Physics SN - 10706631 AB - Volumetric three-component velocimetry measurements have been performed on low aspect ratio wings undergoing a small amplitude pure plunging motion. This study focuses on the vortex flows generated by rectangular and elliptical wings set to a fixed geometric angle of attack of α = 20°. An investigation into the effect of Strouhal number illustrates the highly three-dimensional nature of the leading edge vortex as well as its inherent ability to improve lift performance. Computational simulations show good agreement with experimental results, both demonstrating the complex interaction between leading, trailing, and tip vortices generated in each cycle. The leading edge vortex, in particular, may deform significantly throughout the cycle, in some cases developing strong spanwise undulations. These are at least both Strouhal number and planform dependent. One or two arch-type vortical structures may develop, depending on the aspect ratio and Strouhal number. At sufficiently high Strouhal numbers, a tip vortex ring may also develop, propelling itself away from the wing in the spanwise direction due to self-induced velocity. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VELOCIMETRY KW - RESEARCH KW - FLUX flow KW - GEOMETRY KW - FLUID dynamics KW - VARIABLES (Mathematics) N1 - Accession Number: 88783415; Calderon, D. E. 1 Wang, Z. 1 Gursul, I. 1 Visbal, M. R. 2; Affiliation: 1: Department of Mechanical Engineering, University of Bath, Bath BA2 7AY, 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: Jun2013, Vol. 25 Issue 6, p067102; Subject Term: VELOCIMETRY; Subject Term: RESEARCH; Subject Term: FLUX flow; Subject Term: GEOMETRY; Subject Term: FLUID dynamics; Subject Term: VARIABLES (Mathematics); Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.4808440 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88783415&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stacy, Bradley AU - Comfort, Kristen AU - Comfort, Donald AU - Hussain, Saber T1 - In Vitro Identification of Gold Nanorods through Hyperspectral Imaging. JO - Plasmonics JF - Plasmonics Y1 - 2013/06// VL - 8 IS - 2 M3 - Article SP - 1235 EP - 1240 SN - 15571955 AB - Due to their unique plasmonic and optical properties, gold nanorods (GNR) have shown tremendous potential for nano-based applications extending into a variety of fields including bioimaging, sensor development, electronics, and cancer therapy. These distinctive, shape-specific properties are strongly dependent upon the GNR aspect ratio, thus producing the ability to be targeted for an application by fine-tuning their physical parameters. It is owing to their characteristic spectral signature, which is vastly different from that of a cellular setting, that GNRs are emerging as an ideal candidate for nano-based imaging applications. However, one challenge that has emerged in the field of bioimaging is the need to account for the observed plasmon coupling effect that arises from GNR agglomeration in a physiological environment. In this study, GNRs with aspect ratios of 2.5 and 6.0 were actively identified in an in vitro setting through a hyperspectral imaging (HSI) analysis; which successfully recognized and separated the light scattering pattern of these particles from that of the surrounding cells. Through inclusion of agglomerated GNR spectral patterns in the HSI spectral library, this imaging technique was able to overcome the complication of plasmon coupling, though to varying degrees. These results demonstrate the tremendous potential of GNRs coupled with HSI analysis to advance the field of nano-based sensing and imaging mechanisms. [ABSTRACT FROM AUTHOR] AB - Copyright of Plasmonics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERSPECTRAL imaging systems KW - NANORODS KW - BIO-imaging sensors KW - CANCER treatment KW - PLASMONS (Physics) KW - Agglomeration KW - Gold nanorods KW - Hyperspectral imaging KW - In vitro identification KW - Plasmonic resonance KW - Spectral signature N1 - Accession Number: 87454755; Stacy, Bradley Comfort, Kristen Comfort, Donald 1 Hussain, Saber 2; Email Address: saber.hussain@wpafb.af.mil; Affiliation: 1: Department of Chemical and Materials Engineering, University of Dayton, Dayton 45469 USA 2: Applied Biotechnology Branch, Human Effectiveness Directorate, 711 Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Dayton 45433 USA; Source Info: Jun2013, Vol. 8 Issue 2, p1235; Subject Term: HYPERSPECTRAL imaging systems; Subject Term: NANORODS; Subject Term: BIO-imaging sensors; Subject Term: CANCER treatment; Subject Term: PLASMONS (Physics); Author-Supplied Keyword: Agglomeration; Author-Supplied Keyword: Gold nanorods; Author-Supplied Keyword: Hyperspectral imaging; Author-Supplied Keyword: In vitro identification; Author-Supplied Keyword: Plasmonic resonance; Author-Supplied Keyword: Spectral signature; Number of Pages: 6p; Illustrations: 1 Color Photograph, 2 Black and White Photographs, 2 Graphs; Document Type: Article L3 - 10.1007/s11468-013-9538-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87454755&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cliver, E. AU - Richardson, I. AU - Ling, A. T1 - Solar Drivers of 11-yr and Long-Term Cosmic Ray Modulation. JO - Space Science Reviews JF - Space Science Reviews Y1 - 2013/06// VL - 176 IS - 1-4 M3 - Article SP - 3 EP - 19 PB - Springer Science & Business Media B.V. SN - 00386308 AB - In the current paradigm for the modulation of galactic cosmic rays (GCRs), diffusion is taken to be the dominant process during solar maxima while drift dominates at minima. Observations during the recent solar minimum challenge the pre-eminence of drift at such times. In 2009, the ∼2 GV GCR intensity measured by the Newark neutron monitor increased by ∼5% relative to its maximum value two cycles earlier even though the average tilt angle in 2009 was slightly larger than that in 1986 (∼20° vs. ∼14°), while solar wind B was significantly lower (∼3.9 nT vs. ∼5.4 nT). A decomposition of the solar wind into high-speed streams, slow solar wind, and coronal mass ejections (CMEs; including post-shock flows) reveals that the Sun transmits its message of changing magnetic field (diffusion coefficient) to the heliosphere primarily through CMEs at solar maximum and high-speed streams at solar minimum. Long-term reconstructions of solar wind B are in general agreement for the ∼1900-present interval and can be used to reliably estimate GCR intensity over this period. For earlier epochs, however, a recent Be-based reconstruction covering the past ∼10 years shows nine abrupt and relatively short-lived drops of B to ≲0 nT, with the first of these corresponding to the Spörer minimum. Such dips are at variance with the recent suggestion that B has a minimum or floor value of ∼2.8 nT. A floor in solar wind B implies a ceiling in the GCR intensity (a permanent modulation of the local interstellar spectrum) at a given energy/rigidity. The 30-40% increase in the intensity of 2.5 GV electrons observed by Ulysses during the recent solar minimum raises an interesting paradox that will need to be resolved. [ABSTRACT FROM AUTHOR] AB - Copyright of Space Science Reviews is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR activity KW - COSMIC rays KW - GALACTIC dynamics KW - HELIOSPHERE (Astrophysics) KW - MAGNETIC fields KW - ATMOSPHERIC diffusion KW - INTERSTELLAR matter -- Spectra KW - Coronal Mass Ejections KW - Cosmic Ray Modulation KW - Galactic Cosmic Rays KW - High-speed Streams KW - Solar Cycle KW - Solar Wind KW - Sun N1 - Accession Number: 88155135; Cliver, E. 1; Email Address: afrl.rvb.pa@hanscom.af.mil Richardson, I. Ling, A. 2; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB USA 2: Atmospheric and Environmental Research, Inc., Lexington USA; Source Info: Jun2013, Vol. 176 Issue 1-4, p3; Subject Term: SOLAR activity; Subject Term: COSMIC rays; Subject Term: GALACTIC dynamics; Subject Term: HELIOSPHERE (Astrophysics); Subject Term: MAGNETIC fields; Subject Term: ATMOSPHERIC diffusion; Subject Term: INTERSTELLAR matter -- Spectra; Author-Supplied Keyword: Coronal Mass Ejections; Author-Supplied Keyword: Cosmic Ray Modulation; Author-Supplied Keyword: Galactic Cosmic Rays; Author-Supplied Keyword: High-speed Streams; Author-Supplied Keyword: Solar Cycle; Author-Supplied Keyword: Solar Wind; Author-Supplied Keyword: Sun; Number of Pages: 17p; Illustrations: 13 Graphs; Document Type: Article L3 - 10.1007/s11214-011-9746-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88155135&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Viggiano, Albert A. AU - Johnsen, Rainer T1 - Flowing afterglow measurements of the density dependence of gas-phase ion-ion mutual neutralization reactions. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2013/05/28/ VL - 138 IS - 20 M3 - Article SP - 204302 PB - American Institute of Physics SN - 00219606 AB - We have studied the dependence of several ion-ion mutual neutralization (MN) reactions on helium density in the range from 1.6 × 1016 to 1.5 × 1017 cm-3 at 300 K, using the Variable Electron and Neutral Density Attachment Mass Spectrometry method. The rate coefficients of the reactions Ar+ + Br2-, Ar+ + SF6-, and Ar+ + C7F14- were found to be independent of gas density over the range studied, in disagreement with earlier observations that similar MN reactions are strongly enhanced at the same gas densities. The cause of the previous enhancement with density is traced to the use of 'orbital-motion-limit' theory to infer ion densities from the currents collected by ion-attracting Langmuir probes in a region where it is not applicable. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AFTERGLOW (Physics) KW - GAS phase reactions KW - ION-ion collisions KW - NEUTRALIZATION (Chemistry) KW - CHEMICAL reactions KW - HELIUM KW - LANGMUIR probes N1 - Accession Number: 87925464; Shuman, Nicholas S. 1 Viggiano, Albert A. 1 Johnsen, Rainer 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, 2: Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260,; Source Info: May2013, Vol. 138 Issue 20, p204302; Subject Term: AFTERGLOW (Physics); Subject Term: GAS phase reactions; Subject Term: ION-ion collisions; Subject Term: NEUTRALIZATION (Chemistry); Subject Term: CHEMICAL reactions; Subject Term: HELIUM; Subject Term: LANGMUIR probes; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 5p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.4803159 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87925464&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Viggiano, Albert A. AU - Troe, Jürgen T1 - Electron attachment to CF3 and CF3Br at temperatures up to 890 K: Experimental test of the kinetic modeling approach. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2013/05/28/ VL - 138 IS - 20 M3 - Article SP - 204316 PB - American Institute of Physics SN - 00219606 AB - Thermal rate constants and product branching fractions for electron attachment to CF3Br and the CF3 radical have been measured over the temperature range 300-890 K, the upper limit being restricted by thermal decomposition of CF3Br. Both measurements were made in Flowing Afterglow Langmuir Probe apparatuses; the CF3Br measurement was made using standard techniques, and the CF3 measurement using the Variable Electron and Neutral Density Attachment Mass Spectrometry technique. Attachment to CF3Br proceeds exclusively by the dissociative channel yielding Br-, with a rate constant increasing from 1.1 × 10-8 cm3 s-1 at 300 K to 5.3 × 10-8 cm3 s-1 at 890 K, somewhat lower than previous data at temperatures up to 777 K. CF3 attachment proceeds through competition between associative attachment yielding CF3- and dissociative attachment yielding F-. Prior data up to 600 K showed the rate constant monotonically increasing, with the partial rate constant of the dissociative channel following Arrhenius behavior; however, extrapolation of the data using a recently proposed kinetic modeling approach predicted the rate constant to turn over at higher temperatures, despite being only ∼5% of the collision rate. The current data agree well with the previous kinetic modeling extrapolation, providing a demonstration of the predictive capabilities of the approach. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - TEMPERATURE effect KW - PHYSICS experiments KW - MATHEMATICAL constants KW - CHEMICAL kinetics KW - MATHEMATICAL models KW - DECOMPOSITION (Chemistry) KW - LANGMUIR probes N1 - Accession Number: 87925403; Shuman, Nicholas S. 1 Miller, Thomas M. 1 Viggiano, Albert A. 1 Troe, Jürgen 2,3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, 2: Institut fur Physikalische Chemie, Universität Göttingen, Göttingen, 3: Max-Planck-Institut für Biophysikalische Chemie, Tammannstrasse 6, D-37077 Göttingen,; Source Info: May2013, Vol. 138 Issue 20, p204316; Subject Term: ELECTRONS; Subject Term: TEMPERATURE effect; Subject Term: PHYSICS experiments; Subject Term: MATHEMATICAL constants; Subject Term: CHEMICAL kinetics; Subject Term: MATHEMATICAL models; Subject Term: DECOMPOSITION (Chemistry); Subject Term: LANGMUIR probes; Number of Pages: 7p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1063/1.4807606 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87925403&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Jonghoon AU - Roy, Ajit K. AU - Wohlwend, Jennifer L. AU - Varshney, Vikas AU - Ferguson, John B. AU - Mitchel, William C. AU - Farmer, Barry L. T1 - Scaling law for energy bandgap and effective electron mass in graphene nano mesh. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/05/20/ VL - 102 IS - 20 M3 - Article SP - 203107 PB - American Institute of Physics SN - 00036951 AB - For the energy bandgap of semiconducting graphene nano mesh (GNM), chirality dependent scaling rules have been proposed so far. Based on extensive tight binding studies and simple geometric arguments, we report that Pedersen scaling governs not only the energy bandgap but also the effective mass of the Bloch electron of the semiconducting GNM regardless of its chirality or the crystallography of the mesh holes when the hole areal fraction is low. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTORS KW - ELECTRONS KW - GEOMETRIC analysis KW - PEDERSEN currents KW - CHIRALITY N1 - Accession Number: 87773975; Lee, Jonghoon 1,2 Roy, Ajit K. 1 Wohlwend, Jennifer L. 1,2 Varshney, Vikas 1,2 Ferguson, John B. 1 Mitchel, William C. 1 Farmer, Barry L. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, 2: Universal Technology Corporation, 1270 N. Fairfield Rd., Dayton, Ohio 45432,; Source Info: 5/20/2013, Vol. 102 Issue 20, p203107; Subject Term: SEMICONDUCTORS; Subject Term: ELECTRONS; Subject Term: GEOMETRIC analysis; Subject Term: PEDERSEN currents; Subject Term: CHIRALITY; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 4p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.4807426 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87773975&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miracle, Daniel B. T1 - The density and packing fraction of binary metallic glasses. JO - Acta Materialia JF - Acta Materialia Y1 - 2013/05/15/ VL - 61 IS - 9 M3 - Article SP - 3157 EP - 3171 SN - 13596454 AB - The present work develops a physical model of metallic glass structure that gives a reasonable estimate of density. The efficient cluster-packing model is used as a starting point, and is refined by a high-fidelity estimate of the size of structure-forming clusters and cluster–cluster separations. These are predicted as continuous functions of composition and relative atom radii. Predicted densities are all are within ±10% of measured densities for 200 binary metallic glasses, representing a precision in cluster–cluster separations of ±3%. New structural insights from this work include the importance of acknowledging the unique cluster topologies to estimate cluster–cluster separations; an improved ability to estimate the higher packing efficiency of unlike atoms in the first coordination shell of atomic clusters; and an improved estimate of metalloid–metalloid separations. The unusual, bilinear influence of composition on density in Fe–B glasses is explained by considering the sizes of β and γ sites in different metallic glass structures. Global atom packing fractions derived from measured densities range from about 0.62 to 0.76, and the most stable binary glasses all have packing fractions in excess of 0.70, supporting the idea that atom packing efficiency influences glass stability. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DENSITY KW - PACKING fractions KW - METALLIC glasses KW - ATOMIC clusters KW - SEMIMETALS KW - CHEMICAL stability KW - Atomic structure KW - Free volume KW - Glass-forming ability KW - Metallic glass KW - Modelling N1 - Accession Number: 89162381; Miracle, Daniel B. 1; Email Address: daniel.miracle@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, OH 45433, USA; Source Info: May2013, Vol. 61 Issue 9, p3157; Subject Term: DENSITY; Subject Term: PACKING fractions; Subject Term: METALLIC glasses; Subject Term: ATOMIC clusters; Subject Term: SEMIMETALS; Subject Term: CHEMICAL stability; Author-Supplied Keyword: Atomic structure; Author-Supplied Keyword: Free volume; Author-Supplied Keyword: Glass-forming ability; Author-Supplied Keyword: Metallic glass; Author-Supplied Keyword: Modelling; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.actamat.2013.02.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89162381&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ma, Xiang AU - Xue, Yuhua AU - Dai, Liming AU - Urbas, Augustine AU - Li, Quan T1 - Hydrophilic Cucurbit[7]uril-Pseudorotaxane-Anchored-Monolayer-Protected Gold Nanorods. JO - European Journal of Inorganic Chemistry JF - European Journal of Inorganic Chemistry Y1 - 2013/05/15/ VL - 2013 IS - 14 M3 - Article SP - 2682 EP - 2686 SN - 14341948 AB - Cucurbit[ n]uril-based rotaxane or pseudorotaxane devices connected to gold electrode surfaces and spherical gold nanoparticles have previously been developed. Herein, we report the preparation and characterization of gold nanorods (GNRs) protected by a hydrophilic cucurbit[7]uril-based-pseudorotaxane anchored monolayer. The resulting GNRs decorated with both cucurbit[7]uril-based pseudorotaxane disulfide and sodium thioctate on their entire surface through covalent S-Au linkages are water-soluble as well as stable in both solution and the solid state. [ABSTRACT FROM AUTHOR] AB - Copyright of European Journal of Inorganic Chemistry is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURES KW - RESEARCH KW - NANOPARTICLES -- Research KW - MONOMOLECULAR films KW - GOLD KW - ROTAXANES KW - CUCURBITURIL KW - Cucurbituril KW - Gold KW - Monolayers KW - Nanoparticles KW - Nanostructures KW - Rotaxanes N1 - Accession Number: 87447130; Ma, Xiang 1 Xue, Yuhua 2 Dai, Liming 2 Urbas, Augustine 3 Li, Quan 1; Affiliation: 1: Liquid Crystal Institute, Kent State University, Kent, Ohio 44242, USA, http://www.lcinet.kent.edu/users/qli180/PI/Li.htm 2: Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433, USA; Source Info: May2013, Vol. 2013 Issue 14, p2682; Subject Term: NANOSTRUCTURES; Subject Term: RESEARCH; Subject Term: NANOPARTICLES -- Research; Subject Term: MONOMOLECULAR films; Subject Term: GOLD; Subject Term: ROTAXANES; Subject Term: CUCURBITURIL; Author-Supplied Keyword: Cucurbituril; Author-Supplied Keyword: Gold; Author-Supplied Keyword: Monolayers; Author-Supplied Keyword: Nanoparticles; Author-Supplied Keyword: Nanostructures; Author-Supplied Keyword: Rotaxanes; Number of Pages: 5p; Document Type: Article L3 - 10.1002/ejic.201300010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87447130&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Xue, Chenming AU - Birel, Ozgul AU - Li, Yannian AU - Ma, Xiang AU - Gao, Min AU - Urbas, Augustine AU - Li, Quan T1 - Porphyrin metal complex monolayer-protected gold nanorods: A parallel facile synthesis and self-assembly JO - Journal of Colloid & Interface Science JF - Journal of Colloid & Interface Science Y1 - 2013/05/15/ VL - 398 M3 - Article SP - 1 EP - 6 SN - 00219797 AB - Abstract: Porphyrin metal (Zn, Cu, and Mg) complex monolayer-protected gold nanorods (GNRs) were, for the first time, synthesized. Their synthesis was easy to access by mixing porphyrin encapsulated GNRs with corresponding excess soluble metal salts in solution, followed by the facile purification through centrifugation and sonication due to the gravity of the GNRs and their solubility in organic solvents. Furthermore, the resulting three GNRs exhibited distinct spectroscopic properties and were able to self-assemble into side-by-side arrays driven by π–π intermolecular interactions of the surface metal porphyrin chromophores. [Copyright &y& Elsevier] AB - Copyright of Journal of Colloid & Interface Science is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PORPHYRINS KW - METAL complexes KW - MONOMOLECULAR films KW - GOLD nanoparticles -- Synthesis KW - MOLECULAR self-assembly KW - MIXING KW - SOLUBILITY KW - ORGANIC solvents KW - Fluorescence KW - Gold nanorod KW - Porphyrin metal complex KW - Quench KW - Self-assembly N1 - Accession Number: 86644221; Xue, Chenming 1 Birel, Ozgul 1,2 Li, Yannian 1 Ma, Xiang 1 Gao, Min 1 Urbas, Augustine 3 Li, Quan 1; Email Address: qli1@kent.edu; Affiliation: 1: Liquid Crystal Institute, Kent State University, Kent, OH 44242, United States 2: Department of Chemistry, Mugla University, Mugla 48121, Turkey 3: Materials and Manufacturing Directorate, Air Force Research Laboratory WPAFB, OH 45433, United States; Source Info: May2013, Vol. 398, p1; Subject Term: PORPHYRINS; Subject Term: METAL complexes; Subject Term: MONOMOLECULAR films; Subject Term: GOLD nanoparticles -- Synthesis; Subject Term: MOLECULAR self-assembly; Subject Term: MIXING; Subject Term: SOLUBILITY; Subject Term: ORGANIC solvents; Author-Supplied Keyword: Fluorescence; Author-Supplied Keyword: Gold nanorod; Author-Supplied Keyword: Porphyrin metal complex; Author-Supplied Keyword: Quench; Author-Supplied Keyword: Self-assembly; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jcis.2013.02.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86644221&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hearn, John D. AU - Weber, Richard AU - Nichols, Robert AU - Henley, Michael V. AU - Fox, Shannon T1 - Deposition of Cl2 on soils during outdoor releases. JO - Journal of Hazardous Materials JF - Journal of Hazardous Materials Y1 - 2013/05/15/ VL - 252-253 M3 - Article SP - 107 EP - 114 SN - 03043894 AB - Abstract: Synthetic soil blends were exposed to dense chlorine (Cl2) plumes released at Dugway Proving Ground, UT, during Spring 2010 with the purpose of determining the magnitude of Cl2 deposition onto soil and assessing its potential for attenuating a high-concentration plume. Samples were exposed at varying distances from the release point to include exposure to the pooling liquid (2–3m) and dense vapor (10–17m). Following exposure, soil samples were cored, fractionated vertically and analyzed for chloride (Cl–) to quantify the integrated amount of Cl2 deposited. Cl− was detected as deep as 4cm in samples exposed to dense Cl2 vapor and in the deepest fractions (13cm) of samples exposed to liquid Cl2. Chloride concentration, [Cl–], in the soil samples positively correlated with soil mass fractions of organic matter and water, and while their individual contributions to Cl2 deposition could not be quantitatively determined, the data suggest that organic matter was the primary contributor. [Cl–] results from the top vertical fractions (1.3cm nearest the surface) were used in an analysis to determine the magnitude of deposition as a loss term under low-wind (≤1.6m/s) conditions. The analysis revealed up to 50% of a 1814-kg release could be deposited within 20m from the release point for soil with high organic matter (43%) and/or water content (29%). [Copyright &y& Elsevier] AB - Copyright of Journal of Hazardous Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHLORINE in soils KW - SEDIMENTATION & deposition KW - PLUMES (Fluid dynamics) KW - SOIL sampling KW - HUMUS KW - SOIL pollution KW - Chlorine deposition KW - Consequence assessment KW - Jack Rabbit N1 - Accession Number: 89259578; Hearn, John D. 1; Email Address: john.hearn@tyndall.af.mil Weber, Richard 2 Nichols, Robert 3 Henley, Michael V. 1 Fox, Shannon 4; Affiliation: 1: Air Force Research Laboratory, Airbase Technologies Division, 139 Barnes Drive, Suite 2, Tyndall Air Force Base, FL 32403-5323, United States 2: Applied Research Associates, 139 Barnes Drive, Suite 2, Tyndall Air Force Base, FL 32403-5323, United States 3: Universal Technology Corporation, 139 Barnes Drive, Suite 2, Tyndall Air Force Base, FL 32403-5323, United States 4: Chemical Security Analysis Center, Department of Homeland Security, Aberdeen Proving Ground, MD, United States; Source Info: May2013, Vol. 252-253, p107; Subject Term: CHLORINE in soils; Subject Term: SEDIMENTATION & deposition; Subject Term: PLUMES (Fluid dynamics); Subject Term: SOIL sampling; Subject Term: HUMUS; Subject Term: SOIL pollution; Author-Supplied Keyword: Chlorine deposition; Author-Supplied Keyword: Consequence assessment; Author-Supplied Keyword: Jack Rabbit; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jhazmat.2013.02.038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89259578&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Sukesh AU - Jiang, Naibo AU - Stauffer, Hans U. AU - Schmidt, Jacob B. AU - Kulatilaka, Waruna D. AU - Meyer, Terrence R. AU - Bunker, Christopher E. AU - Gord, James R. T1 - Spatially and temporally resolved temperature and shock-speed measurements behind a laser-induced blast wave of energetic nanoparticles. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/05/14/ VL - 113 IS - 18 M3 - Article SP - 184310 PB - American Institute of Physics SN - 00218979 AB - Spatially and temporally resolved temperature measurements behind an expanding blast wave are made using picosecond (ps) N2 coherent anti-Stokes Raman scattering (CARS) following laser flash heating of mixtures containing aluminum nanoparticles embedded in ammonium-nitrate oxidant. Production-front ps-CARS temperatures as high as 3600 ± 180 K-obtained for 50-nm-diameter commercially produced aluminum-nanoparticle samples-are observed. Time-resolved shadowgraph images of the evolving blast waves are also obtained to determine the shock-wave position and corresponding velocity. These results are compared with near-field blast-wave theory to extract relative rates of energy release for various particle diameters and passivating-layer compositions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BLAST waves KW - NANOPARTICLES -- Research KW - ANTI-Stokes scattering KW - ALUMINUM KW - AMMONIUM nitrate N1 - Accession Number: 87580470; Roy, Sukesh 1 Jiang, Naibo 1 Stauffer, Hans U. 1 Schmidt, Jacob B. 1 Kulatilaka, Waruna D. 1 Meyer, Terrence R. 2 Bunker, Christopher E. 3 Gord, James R. 3; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield Street, Dayton, Ohio 45431, 2: Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, 3: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: May2013, Vol. 113 Issue 18, p184310; Subject Term: BLAST waves; Subject Term: NANOPARTICLES -- Research; Subject Term: ANTI-Stokes scattering; Subject Term: ALUMINUM; Subject Term: AMMONIUM nitrate; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; NAICS/Industry Codes: 325311 Nitrogenous Fertilizer Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1063/1.4804410 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87580470&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Husaini, S. AU - Slagle, J. E. AU - Murray, J. M. AU - Guha, S. AU - Gonzalez, L. P. AU - Bedford, R. G. T1 - Broadband saturable absorption and optical limiting in graphene-polymer composites. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/05/13/ VL - 102 IS - 19 M3 - Article SP - 191112 PB - American Institute of Physics SN - 00036951 AB - Nonlinear optical properties of a graphene-polyvinyl alcohol composite are studied using an irradiance-scan setup. The measurements are carried out at 785 nm and 1064 nm in the nanosecond and picoseconds temporal regimes, respectively. It is shown that the output fluence readily clamps with increasing input and graphene concentration due to nonlinear absorption and scattering. Furthermore, the nonlinear transmission demonstrates weak saturable absorption followed by strong optical limiting. The nonlinear coefficients βeff and Isat calculated via numerical fitting show that βeff depends on the graphene content and increases significantly in nanosecond regime due to high degree of thermally induced nonlinear scattering. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VINYL polymers KW - POLYVINYL alcohol KW - GRAPHENE KW - SPECTRAL irradiance KW - OPTICS N1 - Accession Number: 87655955; Husaini, S. 1 Slagle, J. E. 2 Murray, J. M. 3,4 Guha, S. 4 Gonzalez, L. P. 4 Bedford, R. G. 1; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Ohio 45433, 2: SAIC, Dayton, Ohio 45431, 3: UES, Inc., Dayton, Ohio 45432, 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433,; Source Info: 5/13/2013, Vol. 102 Issue 19, p191112; Subject Term: VINYL polymers; Subject Term: POLYVINYL alcohol; Subject Term: GRAPHENE; Subject Term: SPECTRAL irradiance; Subject Term: OPTICS; Number of Pages: 4p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.4805060 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87655955&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mignolet, Marc P. AU - Przekop, Adam AU - Rizzi, Stephen A. AU - Spottswood, S. Michael T1 - A review of indirect/non-intrusive reduced order modeling of nonlinear geometric structures JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2013/05/13/ VL - 332 IS - 10 M3 - Article SP - 2437 EP - 2460 SN - 0022460X AB - Abstract: The paper presents a review of reduced order modeling (ROM) techniques for geometrically nonlinear structures, more specifically of those techniques that are applicable to structural models constructed using commercial finite element software. The form of the ROM governing equations, the estimation of their parameters, and the selection of the basis functions are reviewed in detail and comparisons of predicted displacements and stresses obtained by the ROM and the full order, finite element models are presented. These ROM methods and validations are extended next to multidisciplinary problems in which the structure is subjected to thermal effects or interacts with the aerodynamics/acoustics. These various applications demonstrate the usefulness and appropriateness of ROMs as computationally efficient alternatives to full finite element models for the accurate prediction of the geometrically nonlinear response of the structures considered. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR systems KW - MATHEMATICAL models KW - GEOMETRICAL constructions KW - EQUATIONS -- Numerical solutions KW - FINITE element method KW - LITERATURE reviews KW - COMPARATIVE studies KW - AERODYNAMICS N1 - Accession Number: 85879869; Mignolet, Marc P. 1; Email Address: marc.mignolet@asu.edu Przekop, Adam 2 Rizzi, Stephen A. 3 Spottswood, S. Michael 4; Affiliation: 1: SEMTE, Faculties of Mechanical and Aerospace Engineering, Arizona State University, Tempe, AZ 85287-6106, USA 2: Analytical Mechanics Associates, Inc., Hampton, VA 23666, USA 3: Structural Acoustics Branch, NASA Langley Research Center, Hampton, VA 23681, USA 4: AFRL/RQSS Structural Sciences Center, Air Force Research Laboratory, Wright Patterson AFB, OH 45433-7402, USA; Source Info: May2013, Vol. 332 Issue 10, p2437; Subject Term: NONLINEAR systems; Subject Term: MATHEMATICAL models; Subject Term: GEOMETRICAL constructions; Subject Term: EQUATIONS -- Numerical solutions; Subject Term: FINITE element method; Subject Term: LITERATURE reviews; Subject Term: COMPARATIVE studies; Subject Term: AERODYNAMICS; Number of Pages: 24p; Document Type: Article L3 - 10.1016/j.jsv.2012.10.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85879869&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chandra, Yenny AU - Stanciulescu, Ilinca AU - Virgin, Lawrence N. AU - Eason, Thomas G. AU - Spottswood, Stephen M. T1 - A numerical investigation of snap-through in a shallow arch-like model JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2013/05/13/ VL - 332 IS - 10 M3 - Article SP - 2532 EP - 2548 SN - 0022460X AB - Abstract: Slender curved structures may experience a loss of stability called snap-through, causing the curvature on part or all of the structure to invert inducing fatigue damage. This paper presents a framework for analyzing the transient responses of slender curved structures. A numerical study of snap-through in a shallow arch-like model under periodic excitations is performed on a simplified model and on a detailed finite element model. The boundaries that separate the snap-through and no snap-through regions in the forcing parameters space are identified. Various post-snap responses are analyzed. The effects of initial conditions on the snap-through boundaries and post-snap responses are examined. Forcing parameters that lead to chaotic response are identified. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STABILITY theory KW - CURVATURE KW - EXCITON theory KW - MATHEMATICAL models KW - FINITE element method KW - PARAMETER estimation KW - CHAOS theory KW - TRANSIENTS (Dynamics) N1 - Accession Number: 85879874; Chandra, Yenny 1 Stanciulescu, Ilinca 1; Email Address: ilinca.s@rice.edu Virgin, Lawrence N. 2 Eason, Thomas G. 3 Spottswood, Stephen M. 3; Affiliation: 1: Rice University, Department of Civil and Environmental Engineering, Houston, TX 77005, USA 2: Duke University, Department of Mechanical Engineering, Durham, NC 27708, USA 3: Air Force Research Laboratory, Structural Sciences Center, 2790 D. Street, WPAFB, OH, USA; Source Info: May2013, Vol. 332 Issue 10, p2532; Subject Term: STABILITY theory; Subject Term: CURVATURE; Subject Term: EXCITON theory; Subject Term: MATHEMATICAL models; Subject Term: FINITE element method; Subject Term: PARAMETER estimation; Subject Term: CHAOS theory; Subject Term: TRANSIENTS (Dynamics); Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.jsv.2012.12.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85879874&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Biswas, Sushmita AU - Duan, Jinsong AU - Nepal, Dhriti AU - Pachter, Ruth AU - Vaia, Richard T1 - Plasmonic Resonances in Self-Assembled Reduced SymmetryGold Nanorod Structures. JO - Nano Letters JF - Nano Letters Y1 - 2013/05/08/ VL - 13 IS - 5 M3 - Article SP - 2220 EP - 2225 SN - 15306984 AB - Self-assembled plasmonic Dolmen structuresconsisting of smallgold nanorods (length = 50 nm and diameter = 20 nm) with a few nanometergaps are observed to show coherent effects of super-radiance and characteristicsof Fano resonance due to the significantly reduced symmetry of thestructure. Relative to previous larger structures from top-down electron-beamlithography, the single crystallinity and atomically smooth surfacesof these self-assembled plasmonic structures result in 50% narrowerresonances, and the small gaps with associated strong coupling enableobservation of multiple dark and bright modes. By tilting the capmonomer with respect to the base dimer an order of magnitude increasein E-field enhancement at the Fano dip is obtained. In addition, aspectrally broad mode is observed indicating the strong impact ofthe geometry of the structure on the nature of coupled modes. Thehighly localized electric near-fields in the gaps will enable stronglight matter interactions and the narrow resonances will be usefulfor improved figure of merits in inexpensive chemical and biosensing. [ABSTRACT FROM AUTHOR] AB - Copyright of Nano Letters is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMONS (Physics) KW - MOLECULAR self-assembly KW - NANORODS KW - GOLD nanoparticles KW - ELECTRON beam lithography KW - ELECTRIC fields N1 - Accession Number: 87616466; Biswas, Sushmita 1 Duan, Jinsong 1 Nepal, Dhriti 1 Pachter, Ruth 1 Vaia, Richard 1; Affiliation: 1: Air Force Research Laboratory, 2941Hobson Way, Wright Patterson Air Force Base, Ohio 45433, UnitedStates; Source Info: May2013, Vol. 13 Issue 5, p2220; Subject Term: PLASMONS (Physics); Subject Term: MOLECULAR self-assembly; Subject Term: NANORODS; Subject Term: GOLD nanoparticles; Subject Term: ELECTRON beam lithography; Subject Term: ELECTRIC fields; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87616466&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kernion, S. J. AU - Lucas, M. S. AU - Horwath, J. AU - Turgut, Z. AU - Michel, E. AU - Keylin, V. AU - Huth, J. F. AU - Leary, A. M. AU - Shen, S. AU - McHenry, M. E. T1 - Reduced losses in rolled Fe73.5Si15.5Nb3B7Cu1 nanocrystalline ribbon. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/05/07/ VL - 113 IS - 17 M3 - Article SP - 17A306 EP - 17A306-3 PB - American Institute of Physics SN - 00218979 AB - Eddy currents in magnetic components undergoing high frequency switching can be mitigated by reducing the thickness of the component. Planar flow cast Fe73.5Si15.5Nb3B7Cu1 ribbon was plastically deformed by cold rolling, resulting in a thickness reduction of 38%. Shear band formation was seen and the coercivity was dramatically higher in the rolled ribbon. After crystallization, the hysteresis loop of the rolled ribbon was nearly identical to a non-rolled ribbon and losses were lower in the rolled ribbon above 25 kHz. Reductions in thickness by this method can lead to increases in operating frequency for power conversion applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - RESEARCH KW - HYSTERESIS loop KW - MAGNETIC induction KW - DIELECTRICS KW - CRYSTALLIZATION N1 - Accession Number: 87497567; Kernion, S. J. 1 Lucas, M. S. 2 Horwath, J. 2 Turgut, Z. 2 Michel, E. 2 Keylin, V. 3 Huth, J. F. 3 Leary, A. M. 1 Shen, S. 1 McHenry, M. E. 1; Affiliation: 1: Department of Material Science and Engineering, Carnegie Mellon University, 5000 Forbes Ave., Pittsburgh, Pennsylvania 15213, 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 3: Magnetics, A Division of Spang and Co., 110 Delta Drive, Pittsburgh, Pennsylvania 15238,; Source Info: May2013, Vol. 113 Issue 17, p17A306; Subject Term: EDDY currents (Electric); Subject Term: RESEARCH; Subject Term: HYSTERESIS loop; Subject Term: MAGNETIC induction; Subject Term: DIELECTRICS; Subject Term: CRYSTALLIZATION; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.4794131 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87497567&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucas, M. S. AU - Mauger, L. AU - Muñoz, J. A. AU - Halevy, I. AU - Horwath, J. AU - Semiatin, S. L. AU - Leontsev, S. O. AU - Stone, M. B. AU - Abernathy, D. L. AU - Xiao, Yuming AU - Chow, Paul AU - Fultz, B. T1 - Phonon densities of states of face-centered-cubic Ni-Fe alloys. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/05/07/ VL - 113 IS - 17 M3 - Article SP - 17A308 EP - 17A308-3 PB - American Institute of Physics SN - 00218979 AB - Inelastic neutron scattering and nuclear resonant inelastic x-ray scattering were used to determine the phonon densities of states of face-centered-cubic Ni-Fe alloys. Increasing Fe concentration results in an average softening of the phonon modes. Chemical ordering of the Ni0.72Fe0.28 alloy results in a reduction of the partial vibrational entropy of the Fe atoms but does not significantly change the partial vibrational entropy of the Ni atoms. Changes in the phonon densities of states with composition and chemical ordering are discussed and analyzed with a cluster expansion method. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INELASTIC neutron scattering KW - X-ray scattering KW - PHONONS KW - IRON-nickel alloys KW - ENTROPY N1 - Accession Number: 87497343; Lucas, M. S. 1,2 Mauger, L. 3 Muñoz, J. A. 3 Halevy, I. 3 Horwath, J. 1 Semiatin, S. L. 1 Leontsev, S. O. 1,4 Stone, M. B. 5 Abernathy, D. L. 5 Xiao, Yuming 6 Chow, Paul 6 Fultz, B. 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 2: UTC Inc., 1270 North Fairfield Road, Dayton, Ohio 45432, 3: California Institute of Technology, W. M. Keck Laboratory 138-78, Pasadena, California 91125, 4: University of Dayton Research Institute, Dayton, Ohio 45469, 5: Oak Ridge National Laboratory, 1, Bethel Valley Road, Oak Ridge, Tennessee 37831, 6: HPCAT, Geophysical Laboratory, Carnegie Institute of Washington, Argonne, Illinois 60439,; Source Info: May2013, Vol. 113 Issue 17, p17A308; Subject Term: INELASTIC neutron scattering; Subject Term: X-ray scattering; Subject Term: PHONONS; Subject Term: IRON-nickel alloys; Subject Term: ENTROPY; Number of Pages: 1p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.4794354 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87497343&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Leary, A. M. AU - Lucas, M. S. AU - Ohodnicki, P. R. AU - Kernion, S. J. AU - Mauger, L. AU - Park, C. AU - Kenney-Benson, C. AU - McHenry, M. E. T1 - The influence of pressure on the phase stability of nanocomposite Fe89Zr7B4 during heating from energy dispersive x-ray diffraction. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/05/07/ VL - 113 IS - 17 M3 - Article SP - 17A317 EP - 17A317-3 PB - American Institute of Physics SN - 00218979 AB - Nanocomposite materials consisting of small crystalline grains embedded within an amorphous matrix show promise for many soft magnetic applications. The influence of pressure is investigated by in situ diffraction of hammer milled Fe89Zr7B4 during heating through the α → γ Fe transition at 0.5, 2.2, and 4.9 GPa. The changes in primary and secondary crystallization onset are described by diffusion and the energy to form a critical nucleus within the framework of classical nucleation theory. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOCOMPOSITE materials KW - RESEARCH KW - CRYSTALS KW - AMORPHOUS substances KW - NUCLEATION KW - IRON compounds N1 - Accession Number: 87497628; Leary, A. M. 1 Lucas, M. S. 2 Ohodnicki, P. R. 3 Kernion, S. J. 1 Mauger, L. 4 Park, C. 5 Kenney-Benson, C. 5 McHenry, M. E. 1; Affiliation: 1: Materials Science and Engineering Department, Carnegie Mellon University, 5000 Forbes Ave; Pittsburgh, Pennsylvania 15213, 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 3: Division of Chemistry and Surface Science, National Energy Technology Laboratory (NETL), 626 Cochrans Mill Road, Pittsburgh, Pennsylvania 15236, 4: California Institute of Technology, W. M. Keck Laboratory 138-78, Pasadena, California 91125, 5: High Pressure Collaborative Access Team (HPCAT), Geophysical Laboratory, Carnegie Institution of Washington, 9700 S. Cass Ave., Argonne, Illinois 60439,; Source Info: May2013, Vol. 113 Issue 17, p17A317; Subject Term: NANOCOMPOSITE materials; Subject Term: RESEARCH; Subject Term: CRYSTALS; Subject Term: AMORPHOUS substances; Subject Term: NUCLEATION; Subject Term: IRON compounds; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.4795326 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87497628&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucas, M. S. AU - Belyea, D. AU - Bauer, C. AU - Bryant, N. AU - Michel, E. AU - Turgut, Z. AU - Leontsev, S. O. AU - Horwath, J. AU - Semiatin, S. L. AU - McHenry, M. E. AU - Miller, C. W. T1 - Thermomagnetic analysis of FeCoCrxNi alloys: Magnetic entropy of high-entropy alloys. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/05/07/ VL - 113 IS - 17 M3 - Article SP - 17A923 EP - 17A923-3 PB - American Institute of Physics SN - 00218979 AB - The equimolar alloy FeCoCrNi, a high-entropy alloy, forms in the face-centered-cubic crystal structure and has a ferromagnetic Curie temperature of 130 K. In this study, we explore the effects of Cr concentration, cold-rolling, and subsequent heat treatments on the magnetic properties of FeCoCrxNi alloys. Cr reductions result in an increase of the Curie temperature, and may be used to tune the TC over a very large temperature range. The magnetic entropy change for a change in applied field of 2T is ΔSm = -0.35 J/(kg K) for cold-rolled FeCoCrNi. Cold-rolling results in a broadening of ΔSm, where subsequent heat treatment at 1073 K sharpens the magnetic entropy curve. In all of the alloys, we find that upon heating (after cold-rolling) there is a re-entrant magnetic moment near 730 K. This feature is much less pronounced in the as-cast samples (without cold-rolling) and in the Cr-rich samples, and is no longer observed after annealing at 1073 K. Possible origins of this behavior are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOMAGNETISM KW - RESEARCH KW - IRON alloys KW - CRYSTAL structure KW - ENTROPY KW - FERROMAGNETISM N1 - Accession Number: 87497536; Lucas, M. S. 1,2 Belyea, D. 3 Bauer, C. 3 Bryant, N. 1,4 Michel, E. 1,4 Turgut, Z. 1,5 Leontsev, S. O. 1,6 Horwath, J. 1 Semiatin, S. L. 1 McHenry, M. E. 7 Miller, C. W. 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 2: UTC, Inc., 1270 North Fairfield Road, Dayton, Ohio 45432, 3: Department of Physics, University of South Florida, Tampa, Florida 33620, 4: Wright State University, Dayton, Ohio 45435, 5: UES, Inc., Wright-Patterson AFB, Ohio 45433, 6: University of Dayton Research Institute, Dayton, Ohio 45469, 7: Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213,; Source Info: May2013, Vol. 113 Issue 17, p17A923; Subject Term: THERMOMAGNETISM; Subject Term: RESEARCH; Subject Term: IRON alloys; Subject Term: CRYSTAL structure; Subject Term: ENTROPY; Subject Term: FERROMAGNETISM; NAICS/Industry Codes: 423510 Metal Service Centers and Other Metal Merchant Wholesalers; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.4798340 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87497536&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Look, D. C. AU - Leedy, K. D. T1 - ZnO plasmonics for telecommunications. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/05/06/ VL - 102 IS - 18 M3 - Article SP - 182107 PB - American Institute of Physics SN - 00036951 AB - Plasmonic resonances (λres's) at the telecommunication wavelengths of 1.3 and 1.55 μm can be accurately produced in ZnO layers grown at 200 °C by pulsed laser deposition in pure Ar ambient using a ZnO target with 3 wt. % Ga2O3, and then annealed in air to produce Hall-effect-determined carrier concentrations 8.8 and 6.0 × 1020 cm-3, respectively. Appropriate values of concentration and Hall mobility for a desired λres can be conveniently determined from a 'plasmonic resonance phase diagram,' generated from the Drude equation and mobility theory. Values of λres as low as 1 μm can be attained in ZnO. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide KW - TELECOMMUNICATION KW - PULSED laser deposition KW - ARGON KW - HALL effect KW - DRUDE theory N1 - Accession Number: 87545120; Look, D. C. 1,2,3 Leedy, K. D. 3; Affiliation: 1: Semiconductor Research Center, Wright State University, Dayton, Ohio 45435, 2: Wyle Laboratories, Inc., 2601 Mission Point Boulevard, Suite 300, Dayton, Ohio 45431, 3: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433,; Source Info: 5/6/2013, Vol. 102 Issue 18, p182107; Subject Term: ZINC oxide; Subject Term: TELECOMMUNICATION; Subject Term: PULSED laser deposition; Subject Term: ARGON; Subject Term: HALL effect; Subject Term: DRUDE theory; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 811213 Communication Equipment Repair and Maintenance; NAICS/Industry Codes: 517910 Other telecommunications; NAICS/Industry Codes: 517919 All Other Telecommunications; NAICS/Industry Codes: 517911 Telecommunications Resellers; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 4p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.4804984 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87545120&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Keren, Hila AU - Mort, Joel AU - Boyer, Pascal AU - Weiss, Omri AU - Eilam, David T1 - Irrelevant idiosyncratic acts as preparatory, confirmatory, or transitional phases in motor behaviour. JO - Behaviour JF - Behaviour Y1 - 2013/05// VL - 150 IS - 5 M3 - Article SP - 547 EP - 568 PB - Brill Academic Publishers SN - 00057959 AB - Motor behaviours typically include acts that may seem irrelevant for the goal of the task. These unnecessary idiosyncratic acts are excessively manifested in certain activities, such as sports or compulsive rituals. Using the shared performance (commonness) of acts as a proxy for their relevance to the current task, we analysed motor behaviour in daily tasks, sport-related tasks, and obsessive-compulsive disorder (OCD) tasks. For each task, these motor behaviours comprised common acts that were performed by all the individuals, and idiosyncratic acts that were performed by only some individuals. In all three tasks there was a temporal section that included all the common acts (termed 'body'). This body section was preceded by a sequence of idiosyncratic acts that we termed 'head', and was followed by another sequence of idiosyncratic acts that we termed 'tail'. While both head and tail sections were relatively short in the daily tasks, the head was relatively long and the tail largely absent in sport-related tasks, which have a definite end and high stakes. In contrast, OCD behaviour had a relatively long tail. In light of these results, we suggest that the head is a preparatory phase and the tail a confirmatory phase. The head may be viewed as a warm-up phase for the pragmatic section of the task ('body'), and the tail as a cool-down phase. Finally, we suggest that rituals may be viewed as a descendant of pragmatic activities, which differentially feature a greater terminal phase of idiosyncratic acts in OCD, and an extended initial phase of idiosyncratic acts in sport rituals. [ABSTRACT FROM AUTHOR] AB - Copyright of Behaviour is the property of Brill Academic Publishers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OBSESSIVE-compulsive disorder KW - MOTOR ability KW - TASK performance KW - PRAGMATICS KW - NEUROSES KW - WARMUP KW - adjunctive behaviour KW - displacement activity KW - motor routines KW - OCD rituals KW - sport rituals N1 - Accession Number: 86993216; Keren, Hila 1 Mort, Joel 2 Boyer, Pascal 3,4 Weiss, Omri 1 Eilam, David 1; Email Address: eilam@post.tau.ac.il; Affiliation: 1: Department of Zoology, Tel-Aviv University, Ramat-Aviv 69978, Israel 2: 711th Human Performance Wing, US Air Force Research Laboratory, WPAFB, OH, USA 3: Department of Psychology, Washington University, St. Louis, MO, USA 4: Department of Anthropology, Washington University, St. Louis, MO, USA; Source Info: 2013, Vol. 150 Issue 5, p547; Subject Term: OBSESSIVE-compulsive disorder; Subject Term: MOTOR ability; Subject Term: TASK performance; Subject Term: PRAGMATICS; Subject Term: NEUROSES; Subject Term: WARMUP; Author-Supplied Keyword: adjunctive behaviour; Author-Supplied Keyword: displacement activity; Author-Supplied Keyword: motor routines; Author-Supplied Keyword: OCD rituals; Author-Supplied Keyword: sport rituals; Number of Pages: 22p; Illustrations: 3 Diagrams, 2 Charts, 1 Graph; Document Type: Article L3 - 10.1163/1568539X-00003071 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86993216&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Perlovsky, Leonid AU - Cabanac, Arnaud AU - Bonniot-Cabanac, Marie-Claude AU - Cabanac, Michel T1 - Mozart effect, cognitive dissonance, and the pleasure of music JO - Behavioural Brain Research JF - Behavioural Brain Research Y1 - 2013/05// VL - 244 M3 - Article SP - 9 EP - 14 SN - 01664328 AB - Abstract: We explore a possibility that the ‘Mozart effect’ points to a fundamental cognitive function of music. Would such an effect of music be due to the hedonicity, a fundamental dimension of mental experience? The present paper explores a recent hypothesis that music helps to tolerate cognitive dissonances and thus enabled accumulation of knowledge and human cultural evolution. We studied whether the influence of music is related to its hedonicity and whether pleasant or unpleasant music would influence scholarly test performance and cognitive dissonance. Specific hypotheses evaluated in this study are that during a test students experience contradictory cognitions that cause cognitive dissonances. If some music helps to tolerate cognitive dissonances, then first, this music should increase the duration during which participants can tolerate stressful conditions while evaluating test choices. Second, this should result in improved performance. These hypotheses are tentatively confirmed in the reported experiments as the agreeable music was correlated with longer duration of tests under stressful conditions and better performance above that under indifferent or unpleasant music. It follows that music likely performs a fundamental cognitive function explaining the origin and evolution of musical ability that have been considered a mystery. [Copyright &y& Elsevier] AB - Copyright of Behavioural Brain Research is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MUSIC therapy KW - MENTAL health KW - MUSIC psychology KW - COGNITIVE dissonance KW - PLEASURE KW - TASK performance KW - HYPOTHESIS KW - ‘Mozart effect’ KW - Cognitive dissonance KW - Music cognition KW - Music cognitive function KW - Pleasure N1 - Accession Number: 86419440; Perlovsky, Leonid 1,2; Email Address: lperl@rcn.com Cabanac, Arnaud 3; Email Address: arnaud.cabanac@csdecou.qc.ca Bonniot-Cabanac, Marie-Claude 4; Email Address: Marie-Claude.Bonniot@fmed.ulaval.ca Cabanac, Michel 4; Email Address: Michel.Cabanac@fmed.ulaval.ca; Affiliation: 1: Athinoula A. Martinos Center for Biomedical Imaging, Harvard University, Charlestown, MA, USA 2: Air Force Research Laboratory, Dayton, OH, USA 3: De Rochebelle School (C.S.D.D), Quebec, Canada 4: Faculty of Medicine, Laval University, Quebec, Canada; Source Info: May2013, Vol. 244, p9; Subject Term: MUSIC therapy; Subject Term: MENTAL health; Subject Term: MUSIC psychology; Subject Term: COGNITIVE dissonance; Subject Term: PLEASURE; Subject Term: TASK performance; Subject Term: HYPOTHESIS; Author-Supplied Keyword: ‘Mozart effect’; Author-Supplied Keyword: Cognitive dissonance; Author-Supplied Keyword: Music cognition; Author-Supplied Keyword: Music cognitive function; Author-Supplied Keyword: Pleasure; NAICS/Industry Codes: 621330 Offices of Mental Health Practitioners (except Physicians); Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.bbr.2013.01.036 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86419440&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Veksler, Vladislav D. AU - Gray, Wayne D. AU - Schoelles, Michael J. T1 - Goal-Proximity Decision-Making. JO - Cognitive Science JF - Cognitive Science Y1 - 2013/05// VL - 37 IS - 4 M3 - Article SP - 757 EP - 774 SN - 03640213 AB - Reinforcement learning (RL) models of decision-making cannot account for human decisions in the absence of prior reward or punishment. We propose a mechanism for choosing among available options based on goal-option association strengths, where association strengths between objects represent previously experienced object proximity. The proposed mechanism, Goal-Proximity Decision-making (GPD), is implemented within the ACT-R cognitive framework. GPD is found to be more efficient than RL in three maze-navigation simulations. GPD advantages over RL seem to grow as task difficulty is increased. An experiment is presented where participants are asked to make choices in the absence of prior reward. GPD captures human performance in this experiment better than RL. [ABSTRACT FROM AUTHOR] AB - Copyright of Cognitive Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DECISION making KW - PROXIMITY spaces KW - REINFORCEMENT learning KW - COGNITIVE learning KW - SIMULATION methods & models KW - Associative learning KW - Decision-making KW - Reinforcement learning KW - Spreading activation N1 - Accession Number: 87498821; Veksler, Vladislav D. 1 Gray, Wayne D. 2 Schoelles, Michael J. 2; Affiliation: 1: Air Force Research Laboratory 2: Cognitive Science Department, Rensselaer Polytechnic Institute; Source Info: May2013, Vol. 37 Issue 4, p757; Subject Term: DECISION making; Subject Term: PROXIMITY spaces; Subject Term: REINFORCEMENT learning; Subject Term: COGNITIVE learning; Subject Term: SIMULATION methods & models; Author-Supplied Keyword: Associative learning; Author-Supplied Keyword: Decision-making; Author-Supplied Keyword: Reinforcement learning; Author-Supplied Keyword: Spreading activation; Number of Pages: 18p; Illustrations: 4 Diagrams, 4 Charts, 2 Graphs; Document Type: Article L3 - 10.1111/cogs.12034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87498821&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Crouch, Robert D. AU - Clay, Stephen B. AU - Oskay, Caglar T1 - Experimental and computational investigation of progressive damage accumulation in CFRP composites JO - Composites: Part B, Engineering JF - Composites: Part B, Engineering Y1 - 2013/05// VL - 48 M3 - Article SP - 59 EP - 67 SN - 13598368 AB - Abstract: This manuscript presents an experimental and computational study of progressive damage accumulation in carbon fiber reinforced polymers. A series of monotonic tension experiments with acoustic emission, X-ray radiography, and X-ray computed tomography were performed on a quasi-isotropic layup to ascertain the initiation, progression, and modes of damage accumulation under tensile loading. A multiscale computational model was used to aid in understanding the progressive damage accumulation. The eigendeformation based reduced order homogenization modeling approach was used due to its computational efficiency and its ability to incorporate distinct damage modes. The combined experimental and computational investigation provided a detailed picture of the progression of damage accumulation in the CFRP composite. The multiscale model predictions were in good agreement with experimental observations. [Copyright &y& Elsevier] AB - Copyright of Composites: Part B, Engineering is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON fiber-reinforced plastics KW - FRACTURE mechanics KW - COMPOSITE materials KW - ACOUSTIC emission KW - TENSILE strength KW - AXIAL loads KW - COMPUTER simulation KW - C. Computational modeling KW - C. Damage mechanics KW - D. Acoustic emission KW - D. Non-destructive testing N1 - Accession Number: 85421113; Crouch, Robert D. 1 Clay, Stephen B. 2 Oskay, Caglar 1; Email Address: caglar.oskay@vanderbilt.edu; Affiliation: 1: Department of Civil and Environmental Engineering, Vanderbilt University, Nashville, TN 37235, United States 2: Air Vehicles Directorate, Air Force Research Laboratory, WPFAB, OH 45433, United States; Source Info: May2013, Vol. 48, p59; Subject Term: CARBON fiber-reinforced plastics; Subject Term: FRACTURE mechanics; Subject Term: COMPOSITE materials; Subject Term: ACOUSTIC emission; Subject Term: TENSILE strength; Subject Term: AXIAL loads; Subject Term: COMPUTER simulation; Author-Supplied Keyword: C. Computational modeling; Author-Supplied Keyword: C. Damage mechanics; Author-Supplied Keyword: D. Acoustic emission; Author-Supplied Keyword: D. Non-destructive testing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.compositesb.2012.12.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85421113&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - O'Hara, P. AU - Duarte, C. AU - Eason, T. AU - Garzon, J. T1 - Efficient analysis of transient heat transfer problems exhibiting sharp thermal gradients. JO - Computational Mechanics JF - Computational Mechanics Y1 - 2013/05// VL - 51 IS - 5 M3 - Article SP - 743 EP - 764 PB - Springer Science & Business Media B.V. SN - 01787675 AB - In this paper, heat transfer problems with sharp spatial gradients are analyzed using the Generalized Finite Element Method with global-local enrichment functions ( GFEM). With this approach, scale-bridging enrichment functions are generated on the fly, providing specially-tailored enrichment functions for the problem to be analyzed with no a-priori knowledge of the exact solution. In this work, a decomposition of the linear system of equations is formulated for both steady-state and transient heat transfer problems, allowing for a much more computationally efficient analysis of the problems of interest. With this algorithm, only a small portion of the global system of equations, i.e., the hierarchically added enrichments, need to be re-computed for each loading configuration or time-step. Numerical studies confirm that the condensation scheme does not impact the solution quality, while allowing for more computationally efficient simulations when large problems are considered. We also extend the GFEM to allow for the use of hexahedral elements in the global domain, while still using tetrahedral elements in the local domain, to allow for automatic localized mesh refinement without the use of constrained approximations. Simulations are run with the use of linear and quadratic hexahedral and tetrahedral elements in the global domain. Convergence studies indicate that the use of a different partition of unity (PoU) in the global (hexahedral elements) and local (tetrahedral elements) domains does not adversely impact the solution quality. [ABSTRACT FROM AUTHOR] AB - Copyright of Computational Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT transfer KW - THERMAL analysis KW - FINITE element method KW - GENERALIZATION KW - ALGORITHMS KW - LINEAR systems KW - MULTISCALE modeling KW - Generalized finite elements KW - Global-local finite elements KW - hp-Methods KW - Multi scale methods KW - Transient analysis N1 - Accession Number: 86977369; O'Hara, P. 1; Email Address: patrick.ohara.ctr@wpafb.af.mil Duarte, C. 2; Email Address: caduarte@illinois.edu Eason, T. 3; Email Address: thomas.eason@wpafb.af.mil Garzon, J. 2; Email Address: jgarzon2@illinois.edu; Affiliation: 1: Universal Technology Corporation, 1270 North Fairfield Rd. Dayton 45432 USA 2: Department of Civil and Environmental Engineering, Newmark Laboratory, University of Illinois at Urbana-Champaign, 205 North Mathews Avenue Urbana 61801 USA 3: Air Force Research Laboratory, Air Vehicles Directorate, WPAFB USA; Source Info: May2013, Vol. 51 Issue 5, p743; Subject Term: HEAT transfer; Subject Term: THERMAL analysis; Subject Term: FINITE element method; Subject Term: GENERALIZATION; Subject Term: ALGORITHMS; Subject Term: LINEAR systems; Subject Term: MULTISCALE modeling; Author-Supplied Keyword: Generalized finite elements; Author-Supplied Keyword: Global-local finite elements; Author-Supplied Keyword: hp-Methods; Author-Supplied Keyword: Multi scale methods; Author-Supplied Keyword: Transient analysis; Number of Pages: 22p; Illustrations: 8 Diagrams, 9 Charts, 11 Graphs; Document Type: Article L3 - 10.1007/s00466-012-0750-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86977369&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boxx, Isaac AU - Carter, Campbell AU - Stöhr, Michael AU - Meier, Wolfgang T1 - Study of the mechanisms for flame stabilization in gas turbine model combustors using kHz laser diagnostics. JO - Experiments in Fluids JF - Experiments in Fluids Y1 - 2013/05// VL - 54 IS - 5 M3 - Article SP - 1 EP - 17 SN - 07234864 AB - An image-processing routine was developed to autonomously identify and statistically characterize flame-kernel events, wherein OH (from a planar laser-induced fluorescence, PLIF, measurement) appears in the probe region away from the contiguous OH layer. This routine was applied to datasets from two gas turbine model combustors that consist of thousands of joint OH-velocity images from kHz framerate OH-PLIF and particle image velocimetry (PIV). Phase sorting of the kernel centroids with respect to the dominant fluid-dynamic structure of the combustors (a helical precessing vortex core, PVC) indicates through-plane transport of reacting fluid best explains their sudden appearance in the PLIF images. The concentration of flame-kernel events around the periphery of the mean location of the PVC indicates they are likely the result of wrinkling and/or breakup of the primary flame sheet associated with the passage of the PVC as it circumscribes the burner centerline. The prevailing through-plane velocity of the swirling flow-field transports these fragments into the imaging plane of the OH-PLIF system. The lack of flame-kernel events near the center of the PVC (in which there is lower strain and longer fluid-dynamic residence times) indicates that auto-ignition is not a likely explanation for these flame kernels in a majority of cases. The lack of flame-kernel centroid variation in one flame in which there is no PVC further supports this explanation. [ABSTRACT FROM AUTHOR] AB - Copyright of Experiments in Fluids is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLAME stability KW - RESEARCH KW - GAS turbines -- Combustion chambers KW - PARTICLE image velocimetry KW - STABILITY (Mechanics) KW - COMBUSTION chambers N1 - Accession Number: 87784628; Boxx, Isaac 1; Email Address: Isaac.Boxx@dlr.de Carter, Campbell 2 Stöhr, Michael 1 Meier, Wolfgang 1; Affiliation: 1: Institute of Combustion Technology, German Aerospace Center, Stuttgart Germany 2: Air Force Research Laboratory, Wright-Patterson AFB, Dayton USA; Source Info: May2013, Vol. 54 Issue 5, p1; Subject Term: FLAME stability; Subject Term: RESEARCH; Subject Term: GAS turbines -- Combustion chambers; Subject Term: PARTICLE image velocimetry; Subject Term: STABILITY (Mechanics); Subject Term: COMBUSTION chambers; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 562210 Waste treatment and disposal; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; Number of Pages: 17p; Document Type: Article L3 - 10.1007/s00348-013-1532-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87784628&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Johnson, Erica M. AU - Traver, Kyle L. AU - Hoffman, Stuart W. AU - Harrison, Catherine R. AU - Herman, James P. T1 - Environmental enrichment protects against functional deficits caused by traumatic brain injury. JO - Frontiers in Behavioral Neuroscience JF - Frontiers in Behavioral Neuroscience Y1 - 2013/05// VL - 7 M3 - Article SP - 1 EP - 7 SN - 16625153 AB - Environmental enrichment (EE) increases cortical weight, neuronal density, dendritic branching, and angiogenesis, all of which may be critical for functional recovery following insult. Our study was designed to determine possible benefits of pre-exposure to EE in preventing functional deficits following traumatic brain injury (TBI) to the prefrontal cortex. To examine the benefit of EE, adult male rats were placed in an enriched environment for 15 days. Enrichment was provided through social interaction, exercise, olfactory stimulation, and new objects/toys to explore. Following enrichment, experimental and age-matched controls were subjected to a moderate medial prefrontal cortex injury via controlled cortical impact (CCI). After 1 week recovery, animals were behaviorally tested to assess memory, anxiety, and sensory neglect. Lesion-induced deficits in spatial memory [Morris water maze (MWM)] were significantly attenuated in EE pre-exposed rats 18-21 days following injury. In addition, TBI-induced sensory neglect was significantly reduced in EE rats relative to non-enriched animals. No differences in anxiety-like behavior on the elevated plus maze (EPM) were detected. The behavioral data suggest that EE is neuroprotective when applied prior to TBI, resulting in improved recovery following injury. [ABSTRACT FROM AUTHOR] AB - Copyright of Frontiers in Behavioral Neuroscience is the property of Frontiers Media S.A. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENVIRONMENTAL enrichment (Animal culture) KW - BRAIN -- Wounds & injuries KW - STRESS (Psychology) KW - TISSUES -- Wounds & injuries KW - RHINENCEPHALON KW - controlled cortical impact KW - environmental enrichment KW - morris water maze KW - sensory neglect KW - traumatic brain injury N1 - Accession Number: 90620295; Johnson, Erica M. 1,2; Email Address: erica.johnson.7@us.af.mil Traver, Kyle L. 2 Hoffman, Stuart W. 3 Harrison, Catherine R. 4 Herman, James P. 1; Affiliation: 1: Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati, Cincinnati, OH, USA 2: 711th Human Performance Wing, Air Force Research Laboratory, Wright Patterson AFB, OH, USA 3: Office of Research and Development, U.S. Department of Veteran Affairs, Washington, DC, USA 4: Federal Aviation Administration, Washington, DC, USA; Source Info: May2013, Vol. 7, p1; Subject Term: ENVIRONMENTAL enrichment (Animal culture); Subject Term: BRAIN -- Wounds & injuries; Subject Term: STRESS (Psychology); Subject Term: TISSUES -- Wounds & injuries; Subject Term: RHINENCEPHALON; Author-Supplied Keyword: controlled cortical impact; Author-Supplied Keyword: environmental enrichment; Author-Supplied Keyword: morris water maze; Author-Supplied Keyword: sensory neglect; Author-Supplied Keyword: traumatic brain injury; Number of Pages: 7p; Document Type: Article L3 - 10.3389/fnbeh.2013.00044 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90620295&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bai, Jian AU - Shi, Shouyuan AU - Wilson, John P. AU - Nelson, Robert AU - Prather, Dennis W. T1 - Wideband, Electrically Small, Planar, Coupled Subwavelength Resonator Antenna With an Embedded Matching Network. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2013/05// VL - 61 IS - 5 M3 - Article SP - 2388 EP - 2396 SN - 0018926X AB - A wideband, electrically small, planar, coupled D-ring subwavelength resonator antenna is presented. Two planar coupled D-ring resonators operating at even mode have been demonstrated experimentally to have a strong coupling to radiation. In this paper, we investigate a novel feeding method of driving the planar coupled D-rings to achieve a wide bandwidth. Dual-mode radiation is observed in the antenna. In one mode, the coupled D-ring driven by the inter-digital monopole acts as a major radiator resonating at a frequency of 1.7 GHz. In another mode, the driving monopole becomes a major radiator capable of resonating at a lower frequency of 1.2 GHz due to an embedded matching network comprised of the D-ring and a meandering line. As a result, the antenna can achieve an impedance bandwidth of 1 GHz–1.7 GHz. The antenna has a size, in terms of ka, of 0.49 to 0.75 over the bandwidth. The efficiency of the antenna is predicted to be very close to the upper bound given by the Chu limit. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BROADBAND communication systems -- Research KW - TELECOMMUNICATION systems KW - RESONATORS KW - ELECTROMAGNETISM KW - ANTENNAS (Electronics) KW - Antennas KW - Chu limit KW - Couplings KW - electrically small KW - Impedance KW - Integrated circuit modeling KW - metamaterial KW - Resonant frequency KW - subwavelength KW - Wideband N1 - Accession Number: 87462400; Bai, Jian 1 Shi, Shouyuan 1 Wilson, John P. 1 Nelson, Robert 2 Prather, Dennis W. 1; Affiliation: 1: Department of Electrical and Computer Engineering, University of Delaware, Newark, DE, USA 2: Materials and Manufacturing Directorate of Air Force Research Laboratory, Wright-Patterson, OH, USA; Source Info: May2013, Vol. 61 Issue 5, p2388; Subject Term: BROADBAND communication systems -- Research; Subject Term: TELECOMMUNICATION systems; Subject Term: RESONATORS; Subject Term: ELECTROMAGNETISM; Subject Term: ANTENNAS (Electronics); Author-Supplied Keyword: Antennas; Author-Supplied Keyword: Chu limit; Author-Supplied Keyword: Couplings; Author-Supplied Keyword: electrically small; Author-Supplied Keyword: Impedance; Author-Supplied Keyword: Integrated circuit modeling; Author-Supplied Keyword: metamaterial; Author-Supplied Keyword: Resonant frequency; Author-Supplied Keyword: subwavelength; Author-Supplied Keyword: Wideband; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 517410 Satellite Telecommunications; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TAP.2013.2244835 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87462400&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Qiu, Qinru AU - Wu, Qing AU - Bishop, Morgan AU - Pino, Robinson E. AU - Linderman, Richard W. T1 - A Parallel Neuromorphic Text Recognition System and Its Implementation on a Heterogeneous High-Performance Computing Cluster. JO - IEEE Transactions on Computers JF - IEEE Transactions on Computers Y1 - 2013/05// VL - 62 IS - 5 M3 - Article SP - 886 EP - 899 SN - 00189340 AB - Given the recent progress in the evolution of high-performance computing (HPC) technologies, the research in computational intelligence has entered a new era. In this paper, we present an HPC-based context-aware intelligent text recognition system (ITRS) that serves as the physical layer of machine reading. A parallel computing architecture is adopted that incorporates the HPC technologies with advances in neuromorphic computing models. The algorithm learns from what has been read and, based on the obtained knowledge, it forms anticipations of the word and sentence level context. The information processing flow of the ITRS imitates the function of the neocortex system. It incorporates large number of simple pattern detection modules with advanced information association layer to achieve perception and recognition. Such architecture provides robust performance to images with large noise. The implemented ITRS software is able to process about 16 to 20 scanned pages per second on the 500 trillion floating point operations per second (TFLOPS) Air Force Research Laboratory (AFRL)/Information Directorate (RI) Condor HPC after performance optimization. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Computers is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH performance computing KW - COMPUTATIONAL intelligence KW - COMPUTER architecture KW - TEXT mining (Information retrieval) KW - ARTIFICIAL intelligence KW - NEOCORTEX KW - Biological neural networks KW - Brain models KW - Computational modeling KW - Computer architecture KW - distributed architecture KW - Heterogeneous (hybrid) systems KW - machine learning KW - natural language interfaces KW - Neurons KW - Optical character recognition software N1 - Accession Number: 86642408; Qiu, Qinru 1 Wu, Qing 2 Bishop, Morgan 2 Pino, Robinson E. 3 Linderman, Richard W. 3; Affiliation: 1: Syracuse University, Syracuse 2: Air Force Research Laboratory, Rome 3: Air Force Research Lab, Rome; Source Info: May2013, Vol. 62 Issue 5, p886; Subject Term: HIGH performance computing; Subject Term: COMPUTATIONAL intelligence; Subject Term: COMPUTER architecture; Subject Term: TEXT mining (Information retrieval); Subject Term: ARTIFICIAL intelligence; Subject Term: NEOCORTEX; Author-Supplied Keyword: Biological neural networks; Author-Supplied Keyword: Brain models; Author-Supplied Keyword: Computational modeling; Author-Supplied Keyword: Computer architecture; Author-Supplied Keyword: distributed architecture; Author-Supplied Keyword: Heterogeneous (hybrid) systems; Author-Supplied Keyword: machine learning; Author-Supplied Keyword: natural language interfaces; Author-Supplied Keyword: Neurons; Author-Supplied Keyword: Optical character recognition software; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TC.2012.50 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86642408&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jenkins, Charles M. AU - Ripley, Robert C. AU - Wu, Chang-Yu AU - Horie, Yasuyuki AU - Powers, Kevin AU - Wilson, William H. T1 - Explosively driven particle fields imaged using a high speed framing camera and particle image velocimetry JO - International Journal of Multiphase Flow JF - International Journal of Multiphase Flow Y1 - 2013/05// VL - 51 M3 - Article SP - 73 EP - 86 SN - 03019322 AB - Abstract: A high speed framing camera and a particle image velocimetry instrument were used to determine the properties of explosively driven particle fields in early microsecond and later millisecond times. Test items were configured in a two inch long cylindrical shape with a half inch diameter core of organic explosive. The core was surrounded by a particle bed of aluminum or tungsten powder of a specific particle size distribution. Position data from the leading edge of the particle fronts for each charge was recorded with a high speed framing camera at early time and with a particle image velocimetry (PIV) instrument at later time to determine particle velocity. Using a PIV image, a velocity gradient along the length of the particle field was established by using the mean particle velocity value determined from three separate horizontal bands that transverse the particle field. The results showed slower particles at the beginning of the particle field closest to the source and faster ones at the end. Differences in particle dispersal, luminescence, and agglomeration were seen when changes in the initial particle size and material type were made. The aluminum powders showed extensive luminescence with agglomeration forming large particle structures while the tungsten powder showed little luminescence, agglomeration and no particle structures. Combining velocity data from the high speed framing camera and PIV, the average drag coefficient for each powder type was determined. The particle field velocities and drag coefficients at one meter showed good agreement with the numerical data produced from a computational fluid dynamics code that takes advantage of both Eulerian and Lagrangian solvers to track individual particles after a set post detonation time interval. [Copyright &y& Elsevier] AB - Copyright of International Journal of Multiphase Flow is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLE image velocimetry KW - FRAMING cameras KW - HIGH-speed photography KW - ALUMINUM powder KW - PARTICLE size distribution KW - AGGLOMERATION (Materials) KW - COMPUTATIONAL fluid dynamics KW - Blast wave KW - Explosion KW - Multiphase flow KW - Particle imaging N1 - Accession Number: 85854630; Jenkins, Charles M. 1,2; Email Address: jenkins@eglin.af.mil Ripley, Robert C. 3 Wu, Chang-Yu 2 Horie, Yasuyuki 1 Powers, Kevin 4 Wilson, William H. 5; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, 2306 Perimeter Road, Eglin AFB, FL 32542, USA 2: Department of Environmental Engineering Sciences, P.O. Box 116450, University of Florida, Gainesville, FL 32611-6450, USA 3: Martec Limited, Suite 400, 1888 Brunswick Street, Halifax, NS, Canada B3J 3J8 4: Particle Engineering Research Center, 205 Particle Science & Technology, University of Florida, Gainesville, FL 32611-6450, USA 5: Defense Threat Reduction Agency, 8725 John J. Kingman Road, Fort Belvoir, VA 22060-6201, USA; Source Info: May2013, Vol. 51, p73; Subject Term: PARTICLE image velocimetry; Subject Term: FRAMING cameras; Subject Term: HIGH-speed photography; Subject Term: ALUMINUM powder; Subject Term: PARTICLE size distribution; Subject Term: AGGLOMERATION (Materials); Subject Term: COMPUTATIONAL fluid dynamics; Author-Supplied Keyword: Blast wave; Author-Supplied Keyword: Explosion; Author-Supplied Keyword: Multiphase flow; Author-Supplied Keyword: Particle imaging; NAICS/Industry Codes: 212210 Iron Ore Mining; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.ijmultiphaseflow.2012.08.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85854630&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Voccola, Kaitlyn AU - Cheney, Margaret AU - Yazici, Birsen T1 - Polarimetric synthetic-aperture inversion for extended targets in clutter. JO - Inverse Problems JF - Inverse Problems Y1 - 2013/05// VL - 29 IS - 5 M3 - Article SP - 054003 EP - 054027 SN - 02665611 AB - This paper presents an analytic inversion method for a polarimetric synthetic-aperture radar (SAR) in the case of an extended target embedded in clutter. The measurements are also contaminated by thermal noise. We use microlocal analysis in a statistical setting to develop a filtered-backprojection-type reconstruction method. The inversion method accommodates arbitrary waveforms and arbitrary flight paths. We model the antennas and scatterers as dipoles; scatterers are thus characterized by a spatially varying scattering matrix. We include directional scattering assumptions to distinguish a curve-like extended target from clutter, which is assumed to scatter isotropically. For the inversion we choose the backprojection filter which minimizes the mean-square error between the reconstructed image and the actual target scattering matrix. Our work differs from standard polarimetric SAR imaging in that we do not perform channel-by-channel image reconstruction. We find that it is preferable to use a coupled reconstruction scheme in which we use all sets of collected data to form each element of the scattering matrix. We show in our numerical experiments that the coupled reconstruction not only minimizes the mean-square error but also improves the image target-to-clutter ratio in certain scenarios. [ABSTRACT FROM AUTHOR] AB - Copyright of Inverse Problems is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INVERSION (Geophysics) KW - MOVING target indicator radar KW - CLUTTER (Radar) KW - THERMAL noise KW - MICROLOCAL analysis KW - S-matrix theory N1 - Accession Number: 94291126; Voccola, Kaitlyn 1,2,3; Email Address: kvoccola@gmail.com Cheney, Margaret 3,4 Yazici, Birsen 5; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Dayton, OH 45433-7318, USA 2: Department of Mathematical Sciences, Rensselaer Polytechnic Institute, Troy, NY 12180-3509, USA 3: Department of Mathematics and Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO 80523, USA 4: Department of Applied Mathematics, Naval Postgraduate School, Monterey, CA 93943-5216, USA 5: Department of Electrical, Computer and System Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA; Source Info: May2013, Vol. 29 Issue 5, p054003; Subject Term: INVERSION (Geophysics); Subject Term: MOVING target indicator radar; Subject Term: CLUTTER (Radar); Subject Term: THERMAL noise; Subject Term: MICROLOCAL analysis; Subject Term: S-matrix theory; Number of Pages: 25p; Document Type: Article L3 - 10.1088/0266-5611/29/5/054003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94291126&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ferrara, Matthew AU - Parker, Jason T AU - Cheney, Margaret T1 - Resolution optimization with irregularly sampled Fourier data. JO - Inverse Problems JF - Inverse Problems Y1 - 2013/05// VL - 29 IS - 5 M3 - Article SP - 054007 EP - 054027 SN - 02665611 AB - Image acquisition systems such as synthetic aperture radar (SAR) and magnetic resonance imaging often measure irregularly spaced Fourier samples of the desired image. In this paper we show the relationship between sample locations, their associated backprojection weights, and image resolution as characterized by the resulting point spread function (PSF). Two new methods for computing data weights, based on different optimization criteria, are proposed. The first method, which solves a maximal-eigenvector problem, optimizes a PSF-derived resolution metric which is shown to be equivalent to the volume of the Cramer–Rao (positional) error ellipsoid in the uniform-weight case. The second approach utilizes as its performance metric the Frobenius error between the PSF operator and the ideal delta function, and is an extension of a previously reported algorithm. Our proposed extension appropriately regularizes the weight estimates in the presence of noisy data and eliminates the superfluous issue of image discretization in the choice of data weights. The Frobenius-error approach results in a Tikhonov-regularized inverse problem whose Tikhonov weights are dependent on the locations of the Fourier data as well as the noise variance. The two new methods are compared against several state-of-the-art weighting strategies for synthetic multistatic point-scatterer data, as well as an ‘interrupted SAR’ dataset representative of in-band interference commonly encountered in very high frequency radar applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Inverse Problems is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESOLUTION (Optics) KW - MATHEMATICAL models KW - SYNTHETIC aperture radar -- Image quality KW - MAGNETIC resonance imaging KW - ELLIPSOIDS KW - LEAST squares N1 - Accession Number: 94291130; Ferrara, Matthew 1; Email Address: matthew.ferrara@matrixresearch.com Parker, Jason T 2; Email Address: jason.parker@wpafb.af.mil Cheney, Margaret 3; Email Address: cheney@math.colostate.edu; Affiliation: 1: Matrix Research, Inc. 1300 Research Park Drive, Dayton, OH 45432, USA 2: Sensors Directorate, US Air Force Research Laboratory, Wright Patterson AFB, OH 45433, USA 3: Department of Mathematics, Colorado State University, Fort Collins, CO 80523-1874, USA; Source Info: May2013, Vol. 29 Issue 5, p054007; Subject Term: RESOLUTION (Optics); Subject Term: MATHEMATICAL models; Subject Term: SYNTHETIC aperture radar -- Image quality; Subject Term: MAGNETIC resonance imaging; Subject Term: ELLIPSOIDS; Subject Term: LEAST squares; NAICS/Industry Codes: 621512 Diagnostic Imaging Centers; Number of Pages: 21p; Document Type: Article L3 - 10.1088/0266-5611/29/5/054007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94291130&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miranda, Analee AU - Cheney, Margaret T1 - Imaging moving objects from multiply scattered waves and multiple sensors. JO - Inverse Problems JF - Inverse Problems Y1 - 2013/05// VL - 29 IS - 5 M3 - Article SP - 054012 EP - 054025 SN - 02665611 AB - In this paper, we develop a linearized imaging theory that combines the spatial, temporal and spectral components of multiply scattered waves as they scatter from moving objects. In particular, we consider the case of multiple fixed sensors transmitting and receiving information from multiply scattered waves. We use a priori information about the multipath background. We use a simple model for multiple scattering, namely scattering from a fixed, perfectly reflecting (mirror) plane. We base our image reconstruction and velocity estimation technique on a modification of a filtered backprojection method that produces a phase-space image. We plot examples of point-spread functions for different geometries and waveforms, and from these plots, we estimate the resolution in space and velocity. Through this analysis, we are able to identify how the imaging system depends on parameters such as bandwidth and number of sensors. We ultimately show that enhanced phase-space resolution for a distribution of moving and stationary targets in a multipath environment may be achieved using multiple sensors. [ABSTRACT FROM AUTHOR] AB - Copyright of Inverse Problems is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOVING target indicator radar KW - OPTICAL detectors KW - INFORMATION retrieval KW - EQUIPMENT & supplies KW - IMAGE reconstruction KW - PHASE space (Statistical physics) N1 - Accession Number: 94291123; Miranda, Analee 1; Email Address: analee.miranda@wpafb.af.mil Cheney, Margaret 2,3; Email Address: cheney@math.colostate.edu; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Dayton, OH 45433, USA 2: Department of Mathematics, Colorado State University, Fort Collins, CO 80523-1874, USA 3: Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO 80523-1874, USA; Source Info: May2013, Vol. 29 Issue 5, p054012; Subject Term: MOVING target indicator radar; Subject Term: OPTICAL detectors; Subject Term: INFORMATION retrieval; Subject Term: EQUIPMENT & supplies; Subject Term: IMAGE reconstruction; Subject Term: PHASE space (Statistical physics); Number of Pages: 14p; Document Type: Article L3 - 10.1088/0266-5611/29/5/054012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94291123&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sytsma, Michael Jon AU - Ukeiley, Lawrence T1 - Mean Loads from Wind-Tunnel Turbulence on Low-Aspect-Ratio Flat Plates. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2013/05//May/Jun2013 VL - 50 IS - 3 M3 - Article SP - 863 EP - 870 SN - 00218669 AB - Turbulence grids are employed in an investigation to study the effects of freestream turbulence levels on aerodynamic loads for several low-aspect-ratio flat-plate wings. The objective of this research was to investigate how large levels of freestream turbulence affect a fixed wing in a low-speed turbulent flow. This paper specifically focuses on time-averaged mean load measurements of wings with three aspect ratios in highly turbulent and low-turbulence baseline flows. Relevant findings are that the presence of turbulence decreases the mean lift for an aspect ratio of 1 wing while increasing the mean lift for an aspect ratio of 2 and 4 wings. The stall angle of attack was increased for all aspect ratios investigated. Turbulence also modifies pitching moments to behave more smoothly than baseline cases. The standard deviations of the loads were found to be constant across the angle of attack, but the rolling moment was significantly increased with increasing aspect ratios. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIND tunnels KW - TURBULENCE KW - AERODYNAMICS KW - AERODYNAMIC load KW - LIVE loads N1 - Accession Number: 88181995; Sytsma, Michael Jon 1 Ukeiley, Lawrence 2; Affiliation: 1: U.S. Air Force Research Laboratory, Valparaiso, Florida 32542 2: University of Florida, Gainesville, Florida 32611; Source Info: May/Jun2013, Vol. 50 Issue 3, p863; Subject Term: WIND tunnels; Subject Term: TURBULENCE; Subject Term: AERODYNAMICS; Subject Term: AERODYNAMIC load; Subject Term: LIVE loads; Number of Pages: 8p; Document Type: Article L3 - 10.2514/1.C032034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88181995&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bohan, Brian T. AU - Polanka, Marc D. T1 - Analysis of Flow Migration in an Ultra-Compact Combustor. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2013/05// VL - 135 IS - 5 M3 - Article SP - 1 EP - 11 SN - 07424795 AB - The ultra-compact combustor (UCC) has the potential to offer improved thrust-to-weight and overall efficiency in a turbojet engine. The thrust-to-weight improvement is due to a reduction in engine weight by shortening the combustor section through the use of the revolutionary circumferential combustor design. The improved efficiency is achieved by using an increased fuel-to-air mass ratio and allowing the fuel to fully combust prior to exiting the UCC system. Furthermore, g-loaded combustion offers increased flame speeds that can lead to smaller combustion volumes. One of the issues with the UCC is that the circumferential combustion of the fuel results in hot gases present at the outside diameter of the core fow. These hot gases need to migrate radially from the circumferential cavity and blend with the core flow to present a uniform temperature distribution to the high-pressure turbine rotor. The current research focused on correlations to control the UCC cavity velocity, control the temperature profile throughout the UCC section, analyze the exhaust species exiting the combustor, and quantify pressure losses in the system. To achieve these goals, a computational fluid dynamics (CFD) analysis was used on a UCC geometry scaled to a representative fighter-scale engine. The analysis included a study of cavity to core flow interaction characteristics, a 5- and 12-species combustion model of liquid and gaseous fuel, and determination of species exiting the combustor. Computational comparisons were also made between an engine realistic condition and an ambient pressure rig environment. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMBUSTION chambers KW - TURBOJET engines KW - TEMPERATURE distribution KW - GAS turbines -- Combustion chambers KW - GAS turbines -- Temperature N1 - Accession Number: 88182201; Bohan, Brian T. 1 Polanka, Marc D. 2; Affiliation: 1: Deputy Branch Chief High and Low Speed Aerodynamic Configuration Branches, Air Vehicles Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 2: Associate Professor, Department of Aeronautical and Astronautical Engineering, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433; Source Info: May2013, Vol. 135 Issue 5, p1; Subject Term: COMBUSTION chambers; Subject Term: TURBOJET engines; Subject Term: TEMPERATURE distribution; Subject Term: GAS turbines -- Combustion chambers; Subject Term: GAS turbines -- Temperature; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; NAICS/Industry Codes: 562210 Waste treatment and disposal; Number of Pages: 11p; Document Type: Article L3 - 10.1115/1.4007866 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88182201&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hay, R. S. AU - Boakye, E. E. AU - Mogilevsky, P. AU - Fair, G. E. AU - Parthasarathy, T. A. AU - Davis, J. E. AU - Marshall, D. T1 - Transformation Plasticity in ( Gd x Dy1− x) PO4 Fiber Coatings During Fiber Push Out. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2013/05// VL - 96 IS - 5 M3 - Article SP - 1586 EP - 1595 PB - Wiley-Blackwell SN - 00027820 AB - The reduction in fiber push-out stress by transformation plasticity in xenotime rare-earth orthophosphate fiber-matrix interphases was demonstrated. Processing methods for transformable xenotime coatings were explored. For conversion to xenotime during processing, ( Gd x Dy1− x) PO4 solid solutions had to be more Dy-rich than those for pellets. Single-crystal alumina fibers were coated with 10-20 μm of (Gd0.4Dy0.6) PO4 xenotime and incorporated into polycrystalline alumina matrices. Coated fiber push-out stresses were between 10 and 80 MPa, significantly lower than those for fibers with other rare-earth orthophosphates coatings. Phase transformations and deformation mechanisms were characterized by SEM and TEM in fiber coatings after push out. Bands of deformed coating several micrometers in width formed during fiber push out. Cataclastic flow with fracture, granulation, translation, rotation, and intense plastic deformation of coating grains was observed. Three phase transformations may occur in heavily deformed particles in the deformation band: xenotime → monazite, xenotime → anhydrite, and anhydrite → monazite. Anhydrite was abundant as a fine lamellar phase on (100) planes in xenotime. Selected area electron diffraction and high-resolution TEM confirmed formation of monazite in a variety of heavily deformed particles. Issues for use of rare-earth orthophosphate transformation plasticity to lower fiber pull-out stress in ceramic matrix composites are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - XENOTIME KW - ORTHOPHOSPHATES KW - THIN films KW - DEFORMATIONS (Mechanics) KW - ALUMINUM oxide N1 - Accession Number: 87549233; Hay, R. S. 1 Boakye, E. E. 2 Mogilevsky, P. 2 Fair, G. E. 1 Parthasarathy, T. A. 2 Davis, J. E. 3 Marshall, D.; Affiliation: 1: Air Force Research Laboratory, Materials Directorate, WPAFB 2: UES Inc 3: Mechanical Engineering Department, Carnegie Mellon University; Source Info: May2013, Vol. 96 Issue 5, p1586; Subject Term: XENOTIME; Subject Term: ORTHOPHOSPHATES; Subject Term: THIN films; Subject Term: DEFORMATIONS (Mechanics); Subject Term: ALUMINUM oxide; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 10p; Illustrations: 5 Color Photographs, 7 Black and White Photographs, 4 Graphs; Document Type: Article L3 - 10.1111/jace.12301 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87549233&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sabelkin, V. AU - Joshi, G. AU - Mall, S. AU - Porter, W.J. AU - John, R. T1 - Monotonic tension and creep behavior of single crystal CMSX-486 under combustion environment JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2013/05// VL - 569 M3 - Article SP - 106 EP - 116 SN - 09215093 AB - Abstract: The monotonic tension and creep loading behavior of single crystal nickel-base superalloy, CMSX-486 was investigated at 1093°C under ambient laboratory and simulated combustion environments. There was degradation in tension and creep performance under combustion environment. A reduction of about 30% in yield strength and ultimate tensile strength and 75% reduction in strain-to-failure were observed in combustion environment relative to laboratory environment. The creep rupture life reduced in combustion environment in comparison to laboratory environment. The creep rupture occurred at a lower strain level in the combustion environment when compared to laboratory environment. The laboratory environment tested specimens experienced higher % neck area reduction, exhibiting more ductility relative to the combustion tested specimens. The mass loss in combustion environment was about 3 times larger than in laboratory environment. The microstructure showed different distribution patterns of γ/γ′ phases. The combustion environment resulted in relatively more contiguous regions of γ phase which presented favorable condition for faster propagation of defects resulting in creep rupture over shorter time span. The subcritical crack growth regions on the fracture surface of the laboratory environment tested specimens were relatively much rougher with more number of craters/voids resulting in longer creep rupture life. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONOTONIC functions KW - SINGLE crystals KW - NICKEL alloys KW - HEAT resistant alloys KW - METALS -- Creep KW - MICROSTRUCTURE KW - CMSX-486 KW - Combustion environment KW - Creep behavior KW - Single crystal superalloys KW - Tensile behavior N1 - Accession Number: 86399516; Sabelkin, V. 1 Joshi, G. 2 Mall, S. 1; Email Address: Shankar.Mall@afit.edu Porter, W.J. 3 John, R. 4; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH, USA 2: Department of Mechanical Engineering, Southern University, Baton Rouge, LA, USA 3: University of Dayton Research Institute, Dayton, OH, USA 4: Metals Branch, Structural Materials Division, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Source Info: May2013, Vol. 569, p106; Subject Term: MONOTONIC functions; Subject Term: SINGLE crystals; Subject Term: NICKEL alloys; Subject Term: HEAT resistant alloys; Subject Term: METALS -- Creep; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: CMSX-486; Author-Supplied Keyword: Combustion environment; Author-Supplied Keyword: Creep behavior; Author-Supplied Keyword: Single crystal superalloys; Author-Supplied Keyword: Tensile behavior; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.msea.2013.01.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86399516&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bennett Jr., Winston AU - Schreiber, Brian AU - Portrey, Antoinette M. AU - Bell, Herbert H. T1 - Challenges in Transforming Military Training: Research and Application of Advanced Simulation and Training Technologies and Methods. JO - Military Psychology (American Psychological Association) JF - Military Psychology (American Psychological Association) Y1 - 2013/05// VL - 25 IS - 3 M3 - Article SP - 173 EP - 176 SN - 08995605 AB - An introduction to the journal is presented in which the guest editors discuss the challenges in transforming military training. N1 - Accession Number: 90457391; Bennett Jr., Winston 1; Email Address: winston.bennett@us.af.mil Schreiber, Brian 1 Portrey, Antoinette M. 1 Bell, Herbert H. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio; Source Info: May2013, Vol. 25 Issue 3, p173; Number of Pages: 4p; Document Type: Article L3 - 10.1037/mil0000002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90457391&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alliger, George M. AU - Beard, Rebecca AU - Bennett Jr., Winston AU - Symons, Steven AU - Colegrove, Charles T1 - A Psychometric Examination of Mission Essential Competency (MEC) Measures Used in Air Force Distributed Mission Operations Training Needs Analysis. JO - Military Psychology (American Psychological Association) JF - Military Psychology (American Psychological Association) Y1 - 2013/05// VL - 25 IS - 3 M3 - Article SP - 218 EP - 233 SN - 08995605 AB - The Mission Essential Competency (MEC) approach to work and training needs analysis has been the focus of a multiyear research project of the United States Air Force. This article was written with the specific goal of reviewing the psychometric characteristics of the various measures that are used in this process. Using extensive survey data from different target populations, we show that the MEC measures are reliable and perform in a way that valid measures would be expected to perform, such as demonstrating appropriate expert/novice differences, expected relationships between general competencies and MECs, and reasonable relationships between job tenure and knowledge/skill. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (American Psychological Association) is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OUTCOME-based education KW - MILITARY education KW - SURVEYS KW - competency assessment KW - competency-based assessment KW - competency-based training KW - mission essential competencies KW - proficiency-based training KW - UNITED States. Air Force N1 - Accession Number: 90457395; Alliger, George M. 1; Email Address: george.alliger@groupoe.com Beard, Rebecca 1 Bennett Jr., Winston 2 Symons, Steven 2 Colegrove, Charles 3; Affiliation: 1: Group for Organizational Effectiveness, Inc., Albany, New York 2: United States Air Force Research Laboratory, Human Effectiveness Directorate, Warfighter Readiness Research Division, Wright-Patterson Air Force Base, Dayton, Ohio 3: Air Combat Command, Langley AFB, Virginia; Source Info: May2013, Vol. 25 Issue 3, p218; Subject Term: OUTCOME-based education; Subject Term: MILITARY education; Subject Term: SURVEYS; Author-Supplied Keyword: competency assessment; Author-Supplied Keyword: competency-based assessment; Author-Supplied Keyword: competency-based training; Author-Supplied Keyword: mission essential competencies; Author-Supplied Keyword: proficiency-based training; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; NAICS/Industry Codes: 611110 Elementary and Secondary Schools; NAICS/Industry Codes: 928110 National Security; Number of Pages: 16p; Document Type: Article L3 - 10.1037/h0094964 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90457395&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Roy, Asim AU - Apolloni, Bruno AU - Perlovsky, Leonid AU - Minai, Ali T1 - Editorial — Special Issue on Autonomous Learning. JO - Neural Networks JF - Neural Networks Y1 - 2013/05// VL - 41 M3 - Editorial SP - 1 EP - 2 SN - 08936080 N1 - Accession Number: 89161588; Roy, Asim 1 Apolloni, Bruno 2 Perlovsky, Leonid 3 Minai, Ali 4; Affiliation: 1: Arizona State University, USA 2: University of Milan, Italy 3: Harvard University and The Air Force Research Laboratory, USA 4: University of Cincinnati, USA; Source Info: May2013, Vol. 41, p1; Number of Pages: 2p; Document Type: Editorial L3 - 10.1016/j.neunet.2013.03.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89161588&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Claflin, Bruce AU - Leedy, Kevin D. AU - Look, David C. T1 - Dopant profiles in heavily doped ZnO. JO - Optical Engineering JF - Optical Engineering Y1 - 2013/05// VL - 52 IS - 5 M3 - Article SP - 1 EP - 4 SN - 00913286 AB - X-ray photoelectron spectroscopy (XPS) is used to compare the composition as a function of depth of as-grown zinc oxide (ZnO) films heavily doped with Ga and similar samples annealed in air for 10 min at 600°C, with particular attention given to the near-surface region. Films are grown by pulsed laser deposition (PLD) using a ZnO target containing 3 wt% Ga2O3. Electrical properties of these samples are determined from temperature-dependent Hall-effect measurements. The as grown film has the following characteristics: (1) ~1:1 Zn:O ratio with a Ga concentration of ~3.3 at %; (2) no excess Ga in the near-surface region; and (3) excellent electrical characteristics: p = 2.42 x 10-4 Ω-cm, n 8.05 x 1020 cm-3, and µ 32.1 cm²/V-s-s at 300 K. For the annealed sample: (1) the Zn:O ratio remains ~1:1, but the Ga concentration is ~3 at %, which is ~10% lower than in the as-grown film; (2) ~7 at % Ga is measured in the near-surface region; and (3) a significant increase in resistivity to p = 0.99 Ω-cm, 1.97 x 1018 cm-3, and µ 3.2 cm²/V-s at 300 K. Analysis of the O chemical shift suggests formation of a mixed ZnO/Ga2O3 surface layer = 5-nm-thick accounts for the observed changes in the Ga profile after annealing. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DOPING agents (Chemistry) KW - RESEARCH KW - TRACE elements KW - ZINC oxide KW - OXIDES KW - GALLIUM (Metal) KW - composition KW - Ga doping KW - Hall effect KW - x-ray photoelectron spectroscopy KW - ZnO N1 - Accession Number: 92987536; Claflin, Bruce 1; Email Address: bruce.claflin@wpafb.af.mil Leedy, Kevin D. 1 Look, David C. 1,2,3; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Dayton, Ohio 45433 2: Wright State Universit, Semiconductor Research Center, Dayton, Ohio 45435 3: Wyle Laboratories, Aerospace Division, Dayton, Ohio 45440; Source Info: May2012, Vol. 52 Issue 5, p1; Subject Term: DOPING agents (Chemistry); Subject Term: RESEARCH; Subject Term: TRACE elements; Subject Term: ZINC oxide; Subject Term: OXIDES; Subject Term: GALLIUM (Metal); Author-Supplied Keyword: composition; Author-Supplied Keyword: Ga doping; Author-Supplied Keyword: Hall effect; Author-Supplied Keyword: x-ray photoelectron spectroscopy; Author-Supplied Keyword: ZnO; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1117/1.OE.52.5.053801 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92987536&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alarcon, Gene M. AU - Bowling, Nathan A. AU - Khazon, Steven T1 - Great expectations: A meta-analytic examination of optimism and hope JO - Personality & Individual Differences JF - Personality & Individual Differences Y1 - 2013/05// VL - 54 IS - 7 M3 - Article SP - 821 EP - 827 SN - 01918869 AB - Abstract: Optimism and hope—two psychological constructs reflecting positive expectations about one’s future—have garnered considerable research attention and each has been the subject of several narrative reviews. In the current meta-analysis, we examined the optimism–hope relationship and we examined several potential correlates and consequences of optimism and hope. Our results suggest that optimism and hope are distinguishable from each other. Furthermore, both are related to several indices of psychological and physical well-being and both are empirically distinguishable from other personality traits, such as the Five Factor Model characteristics and trait affectivity. We conclude by discussing directions for future research on optimism and hope. [Copyright &y& Elsevier] AB - Copyright of Personality & Individual Differences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXPECTATION (Psychology) KW - OPTIMISM KW - HOPE KW - ATTENTION KW - HUMAN comfort KW - WELL-being -- Psychological aspects KW - PERSONALITY KW - META-analysis KW - Hope KW - Meta-analysis KW - Optimism KW - Personality KW - Well-being N1 - Accession Number: 85582667; Alarcon, Gene M. 1 Bowling, Nathan A. 2 Khazon, Steven 2; Affiliation: 1: Air Force Research Laboratory, Wright Patterson AFB, OH 45433, United States 2: Wright State University, Department of Psychology, Dayton, OH 45435, United States; Source Info: May2013, Vol. 54 Issue 7, p821; Subject Term: EXPECTATION (Psychology); Subject Term: OPTIMISM; Subject Term: HOPE; Subject Term: ATTENTION; Subject Term: HUMAN comfort; Subject Term: WELL-being -- Psychological aspects; Subject Term: PERSONALITY; Subject Term: META-analysis; Author-Supplied Keyword: Hope; Author-Supplied Keyword: Meta-analysis; Author-Supplied Keyword: Optimism; Author-Supplied Keyword: Personality; Author-Supplied Keyword: Well-being; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.paid.2012.12.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85582667&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fritsche, Miriam AU - Pandey, Ras B. AU - Farmer, Barry L. AU - Heermann, Dieter W. T1 - Variation in Structure of a Protein (H2AX) with Knowledge-Based Interactions JO - PLoS ONE JF - PLoS ONE Y1 - 2013/05// VL - 8 IS - 5 M3 - Article SP - 1 EP - 6 PB - Public Library of Science SN - 19326203 AB - The structure of a protein (H2AX) as a function of temperature is examined by three knowledge-based phenomenological interactions, MJ (Miyazawa and Jernigan), BT (Betancourt and Thirumalai), and BFKV (Bastolla et al.) to identify similarities and differences in results. Data from the BT and BFKV residue-residue interactions verify finding with the MJ interaction, i.e., the radius of gyration (Rg) of H2AX depends non-monotonically on temperature. The increase in Rg is followed by a decay on raising the temperature with a maximum at a characteristic value, Tc, which depends on the knowledge-based contact matrix, TcBFKV ≤ TcMJ ≤ TcBT. The range (ΔT) of non-monotonic thermal response and its decay pattern with the temperature are sensitive to interaction. A rather narrow temperature range of ΔTMJ ≈ 0.015–0.022 with the MJ interaction expands and shifts up to ΔTBT ≈ 0.018–0.30 at higher temperatures with the BT interaction and shifts down with the BFKV interaction to ΔTBFKV ≈ 0.011–0.018. The scaling of the structure factor with the wave vector reveals that the structure of the protein undergoes a transformation from a random coil at high temperature to a globular conformation at low temperatures. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTEIN structure KW - RADIUS of gyration KW - TEMPERATURE KW - BIOCHEMISTRY KW - COMPUTATIONAL biology KW - PROTEIN folding KW - STATISTICAL mechanics KW - Biochemistry KW - Biology KW - Biomaterials KW - Biophysics KW - Biophysics simulations KW - Biophysics theory KW - Computational biology KW - Computer science KW - Computing methods KW - Macromolecular assemblies KW - Macromolecular structure analysis KW - Materials physics KW - Materials science KW - Physics KW - Protein folding KW - Protein structure KW - Proteins KW - Research Article KW - Statistical mechanics N1 - Accession Number: 88376851; Fritsche, Miriam 1 Pandey, Ras B. 2; Email Address: ras.pandey@usm.edu Farmer, Barry L. 3 Heermann, Dieter W. 1; Affiliation: 1: 1 Institute for Theoretical Physics, University of Heidelberg, Heidelberg, Germany 2: 2 Department of Physics and Astronomy, University of Southern Mississippi, Hattiesburg, Mississippi, United States of America 3: 3 Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio, United States of America; Source Info: May2013, Vol. 8 Issue 5, p1; Subject Term: PROTEIN structure; Subject Term: RADIUS of gyration; Subject Term: TEMPERATURE; Subject Term: BIOCHEMISTRY; Subject Term: COMPUTATIONAL biology; Subject Term: PROTEIN folding; Subject Term: STATISTICAL mechanics; Author-Supplied Keyword: Biochemistry; Author-Supplied Keyword: Biology; Author-Supplied Keyword: Biomaterials; Author-Supplied Keyword: Biophysics; Author-Supplied Keyword: Biophysics simulations; Author-Supplied Keyword: Biophysics theory; Author-Supplied Keyword: Computational biology; Author-Supplied Keyword: Computer science; Author-Supplied Keyword: Computing methods; Author-Supplied Keyword: Macromolecular assemblies; Author-Supplied Keyword: Macromolecular structure analysis; Author-Supplied Keyword: Materials physics; Author-Supplied Keyword: Materials science; Author-Supplied Keyword: Physics; Author-Supplied Keyword: Protein folding; Author-Supplied Keyword: Protein structure; Author-Supplied Keyword: Proteins; Author-Supplied Keyword: Research Article; Author-Supplied Keyword: Statistical mechanics; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 6p; Document Type: Article L3 - 10.1371/journal.pone.0064507 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88376851&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - He, Ping AU - Estepp, Justin R. T1 - A practical method for quickly determining electrode positions in high-density EEG studies. JO - Neuroscience Letters JF - Neuroscience Letters Y1 - 2013/04/29/ VL - 541 M3 - Article SP - 73 EP - 76 SN - 03043940 AB - Abstract: This report describes a simple and practical method for determining electrode positions in high-density EEG studies. This method reduces the number of electrodes for which accurate three-dimensional location must be measured, thus minimizing experimental set-up time and the possibility of digitization error. For each electrode cap, a reference data set is first established by placing the cap on a reference head and digitizing the 3-D position of each channel. A set of control channels are pre-selected that should be adequately distributed over the cap. A simple choice could be the standard 19 channels of the International 10–20 system or their closest substitutes. In a real experiment, only the 3-D positions of these control channels need to be measured and the position of each of the remaining channels are calculated from the position data of the same channels in the reference data set using a local transformation determined by the nearest three or four pairs of control channels. Six BioSemi ActiveTwo caps of different size and channel numbers were used to evaluate the method. Results show that the mean prediction error is about 2mm and is comparable with the residual uncertainty in direct position measurement using a Polhemus digitizer. [Copyright &y& Elsevier] AB - Copyright of Neuroscience Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRODES KW - ELECTROENCEPHALOGRAPHY KW - THREE-dimensional imaging KW - DIGITIZATION KW - MEDICAL errors KW - DATA analysis KW - COMPARATIVE studies KW - 3-D digitizer KW - Electrode position measurement KW - High-density EEG N1 - Accession Number: 89193758; He, Ping 1; Email Address: ping.he@wright.edu Estepp, Justin R. 2; Affiliation: 1: Department of Biomedical, Industrial and Human Factors Engineering, Wright State University, Dayton, OH 45435, USA 2: Air Force Research Laboratory, Wright–Patterson Air Force Base, OH 45433, USA; Source Info: Apr2013, Vol. 541, p73; Subject Term: ELECTRODES; Subject Term: ELECTROENCEPHALOGRAPHY; Subject Term: THREE-dimensional imaging; Subject Term: DIGITIZATION; Subject Term: MEDICAL errors; Subject Term: DATA analysis; Subject Term: COMPARATIVE studies; Author-Supplied Keyword: 3-D digitizer; Author-Supplied Keyword: Electrode position measurement; Author-Supplied Keyword: High-density EEG; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.neulet.2013.02.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89193758&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hause, Michael L. AU - Prince, Benjamin D. AU - Bemish, Raymond J. T1 - Krypton charge exchange cross sections for Hall effect thruster models. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/04/28/ VL - 113 IS - 16 M3 - Article SP - 163301 EP - 163301-8 PB - American Institute of Physics SN - 00218979 AB - Following discharge from a Hall effect thruster, charge exchange occurs between ions and un-ionized propellant atoms. The low-energy cations produced can disturb operation of onboard instrumentation or the thruster itself. Charge-exchange cross sections for both singly and doubly charged propellant atoms are required to model these interactions. While xenon is the most common propellant currently used in Hall effect thrusters, other propellants are being considered, in particular, krypton. We present here guided-ion beam measurements and comparisons to semiclassical calculations for Kr+ + Kr and Kr2+ + Kr cross sections. The measurements of symmetric Kr+ + Kr charge exchange are in good agreement with both the calculations including spin-orbit effects and previous measurements. For the symmetric Kr2+ + Kr reaction, we present cross section measurements for center-of-mass energies between 1 eV and 300 eV, which spans energies not previously examined experimentally. These cross section measurements compare well with a simple one-electron transfer model. Finally, cross sections for the asymmetric Kr2+ + Kr → Kr+ + Kr+ reaction show an onset near 12 eV, reaching cross sections near constant value of 1.6 Å2 with an exception near 70-80 eV. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HALL effect KW - IONS KW - ATOMS KW - KRYPTON KW - ION bombardment N1 - Accession Number: 87372902; Hause, Michael L. 1 Prince, Benjamin D. 2 Bemish, Raymond J. 2; Affiliation: 1: Institute for Scientific Research, Boston College, Chestnut Hill, Massachusetts 02159, 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117,; Source Info: Apr2013, Vol. 113 Issue 16, p163301; Subject Term: HALL effect; Subject Term: IONS; Subject Term: ATOMS; Subject Term: KRYPTON; Subject Term: ION bombardment; Number of Pages: 1p; Illustrations: 1 Diagram, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.4802432 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87372902&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Kyle AU - Carroll, Turhan AU - Bodyfelt, Joshua D. AU - Vitebskiy, Ilya AU - Chabanov, A. A. T1 - Enhanced transmission and giant Faraday effect in magnetic metal--dielectric photonic structures. JO - Journal of Physics: D Applied Physics JF - Journal of Physics: D Applied Physics Y1 - 2013/04/24/ VL - 46 IS - 16 M3 - Article SP - 1 EP - 5 SN - 00223727 AB - Due to their large electrical conductivity, stand-alone metallic films are highly reflective at microwave (MW) frequencies. For this reason, it is nearly impossible to observe Faraday rotation in ferromagnetic metal layers, even in films just tens of nanometres thick. Here, we show using numerical simulations that a stack of cobalt nano-layers interlaced between dielectric layers can become highly transmissive and display a large Faraday rotation in a finite frequency band. A 45° Faraday rotation commonly used in MW isolators can be achieved with ferromagnetic metallic layers as thin as tens of nanometres. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: D Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductivity -- Research KW - MICROWAVES KW - RESEARCH KW - FARADAY effect KW - PHOTONICS -- Research KW - THIN films -- Research N1 - Accession Number: 90141935; Smith, Kyle 1 Carroll, Turhan 2 Bodyfelt, Joshua D. 3 Vitebskiy, Ilya 2 Chabanov, A. A. 1,2; Affiliation: 1: Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, TX 78249, USA 2: Air Force Research Laboratory, Sensors Directorate, Wright Patterson AFB, OH 45433, USA 3: ElectroScience Laboratory and Department of Electrical Engineering, The Ohio State University, Columbus, OH 43212, USA; Source Info: 2013, Vol. 46 Issue 16, p1; Subject Term: ELECTRIC conductivity -- Research; Subject Term: MICROWAVES; Subject Term: RESEARCH; Subject Term: FARADAY effect; Subject Term: PHOTONICS -- Research; Subject Term: THIN films -- Research; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 5p; Document Type: Article L3 - 10.1088/0022-3727/46/16/165002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90141935&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Macdonald, J. R. AU - Beecher, S. J. AU - Berry, P. A. AU - Schepler, K. L. AU - Kar, A. K. T1 - Compact mid-infrared Cr:ZnSe channel waveguide laser. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/04/22/ VL - 102 IS - 16 M3 - Article SP - 161110 EP - 161110-3 PB - American Institute of Physics SN - 00036951 AB - We demonstrate a mid-infrared channel waveguide laser in Cr:ZnSe operating at 2573 nm. The compact cavity has a total footprint of less than 3 cm2 and produces a maximum power output of 18.5 mW. The depressed index cladding structures guide across the entire emission band of Cr:ZnSe, from 1.9 μm to 3.4 μm, indicating the viability of the device for integrated and robust continuously tunable mid-infrared sources. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVEGUIDE lasers KW - MOLECULAR absorption spectra KW - SEMICONDUCTORS KW - FEMTOSECOND pulses KW - GAUSSIAN distribution N1 - Accession Number: 87354506; Macdonald, J. R. 1 Beecher, S. J. 1 Berry, P. A. 2 Schepler, K. L. 2 Kar, A. K. 1; Affiliation: 1: Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433,; Source Info: 4/22/2013, Vol. 102 Issue 16, p161110; Subject Term: WAVEGUIDE lasers; Subject Term: MOLECULAR absorption spectra; Subject Term: SEMICONDUCTORS; Subject Term: FEMTOSECOND pulses; Subject Term: GAUSSIAN distribution; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 1p; Illustrations: 1 Color Photograph, 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1063/1.4803058 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87354506&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sands, Brian L. AU - Huang, Shih K. AU - Speltz, Jared W. AU - Niekamp, Matthew A. AU - Ganguly, Biswa N. T1 - Role of Penning ionization in the enhancement of streamer channel conductivity and Ar(1s5) production in a He-Ar plasma jet. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/04/21/ VL - 113 IS - 15 M3 - Article SP - 153303 EP - 153303-8 PB - American Institute of Physics SN - 00218979 AB - Plasma jet devices that use a helium gas flow mixed with a small percentage of argon have been shown to operate with a larger discharge current and enhanced production of the Ar(1s5) metastable state, particularly in the discharge afterglow. In this experiment, time-resolved quantitative measurements of He(23S1) and Ar(1s5) metastable species were combined with current and spectrally resolved emission measurements to elucidate the role of Penning ionization in a helium plasma jet with a variable argon admixture. The plasma jet was enclosed in a glass chamber through which a flowing nitrogen background was maintained at 600 Torr. At 3%-5% Ar admixture, we observed a ∼50% increase in the peak circuit current and streamer velocity relative to a pure helium plasma jet for the same applied voltage. The streamer initiation delay also decreased by ∼20%. Penning ionization of ground-state argon was found to be the dominant quenching pathway for He(23S1) up to 2% Ar and was directly correlated with a sharp increase in both the circuit current and afterglow production of Ar(1s5) for Ar admixtures up to 1%, but not necessarily with the streamer velocity, which increased more gradually with Ar concentration. Ar(1s5) was produced in the afterglow through recombination of Ar+ and dissociative recombination of Ar2+ as the local mean electron energy decreased in the plasma channel behind the streamer head. The discharge current and argon metastable enhancement are contingent on the rapid production of He(23S1) near the streamer head, >5×1012 cm-3 in 30 ns under the conditions of this experiment. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PENNING ionization KW - RESEARCH KW - PLASMA jets KW - ARGON plasmas KW - HELIUM plasmas KW - PLASMA (Ionized gases) -- Research N1 - Accession Number: 87071585; Sands, Brian L. 1 Huang, Shih K. 2 Speltz, Jared W. 2 Niekamp, Matthew A. 2 Ganguly, Biswa N. 3; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Rd., Dayton, Ohio 45432, 2: Department of Mechanical and Materials Engineering, Wright State University, 3640 Colonel Glenn Hwy., Dayton, Ohio 45435, 3: Air Force Research Laboratory, 1950 5th St. Wright Patterson Air Force Base, Ohio 45433,; Source Info: Apr2013, Vol. 113 Issue 15, p153303; Subject Term: PENNING ionization; Subject Term: RESEARCH; Subject Term: PLASMA jets; Subject Term: ARGON plasmas; Subject Term: HELIUM plasmas; Subject Term: PLASMA (Ionized gases) -- Research; Number of Pages: 1p; Illustrations: 2 Diagrams, 1 Chart, 6 Graphs; Document Type: Article L3 - 10.1063/1.4802444 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87071585&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fournier, Joseph A. AU - Shuman, Nicholas S. AU - Melko, Joshua J. AU - Ard, Shaun G. AU - Viggiano, Albert A. T1 - A novel technique for measurement of thermal rate constants and temperature dependences of dissociative recombination: CO2+, CF3+, N2O+, C7H8+, C7H7+, C6H6+, C6H5+, C5H6+, C4H4+, and C3H3+. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2013/04/21/ VL - 138 IS - 15 M3 - Article SP - 154201 PB - American Institute of Physics SN - 00219606 AB - A novel technique using a flowing afterglow-Langmuir probe apparatus for measurement of temperature dependences of rate constants for dissociative recombination (DR) is presented. Low (∼1011 cm-3) concentrations of a neutral precursor are added to a noble gas/electron afterglow plasma thermalized at 300-500 K. Charge exchange yields one or many cation species, each of which may undergo DR. Relative ion concentrations are monitored at a fixed reaction time while the initial plasma density is varied between 109 and 1010 cm-3. Modeling of the decrease in concentration of each cation relative to the non-recombining noble gas cation yields the rate constant for DR. The technique is applied to several species (O2+, CO2+, CF3+, N2O+) with previously determined 300 K values, showing excellent agreement. The measurements of those species are extended to 500 K, with good agreement to literature values where they exist. Measurements are also made for a range of CnHm+ (C7H7+, C7H8+, C5H6+, C4H4+, C6H5+, C3H3+, and C6H6+) derived from benzene and toluene neutral precursors. CnHm+ DR rate constants vary from 8-12 × 10-7 cm3 s-1 at 300 K with temperature dependences of approximately T-0.7. Where prior measurements exist these results are in agreement, with the exception of C3H3+ where the present results disagree with a previously reported flat temperature dependence. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL kinetics KW - AFTERGLOW (Physics) KW - PLASMA density KW - REACTION time KW - CHEMICAL reactions KW - CATIONS N1 - Accession Number: 87071406; Fournier, Joseph A. 1 Shuman, Nicholas S. 1 Melko, Joshua J. 1 Ard, Shaun G. 1 Viggiano, Albert A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117,; Source Info: 4/21/2013, Vol. 138 Issue 15, p154201; Subject Term: CHEMICAL kinetics; Subject Term: AFTERGLOW (Physics); Subject Term: PLASMA density; Subject Term: REACTION time; Subject Term: CHEMICAL reactions; Subject Term: CATIONS; Number of Pages: 7p; Illustrations: 1 Diagram, 3 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.4801657 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87071406&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, S.I. AU - Dimiduk, D.M. AU - Parthasarathy, T.A. AU - Uchic, M.D. AU - Woodward, C. T1 - Atomistic simulations of surface cross-slip nucleation in face-centered cubic nickel and copper JO - Acta Materialia JF - Acta Materialia Y1 - 2013/04/15/ VL - 61 IS - 7 M3 - Article SP - 2500 EP - 2508 SN - 13596454 AB - Abstract: In this manuscript, embedded atom potentials are used to determine the various core structures of glide screw-character dislocations intersecting free surfaces at right and inclined angles in face-centered cubic Ni and Cu. It is shown that the negative constriction forms at free surfaces under certain conditions. The role of various factors affecting the formation of negative constriction at the free surface, negative constriction energy, ledge annihilation and screw dislocation rotation due to Lothe’s forces are discussed. The activation energy for surface cross-slip nucleation when the screw dislocation intersects the free surfaces at right angles, in the absence of ledge annihilation forces, is shown to be 0.05eV in Ni and 0.09eV in Cu. The activation-energy values obtained via the nudged elastic band method are significantly lower than the activation energy for cross-slip at attractive forest dislocation intersections in these materials. The present results are expected to be useful in understanding the mechanical behavior of micron-sized pillars under pure tension and compression. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL KW - COPPER KW - DISLOCATION nucleation KW - SIMULATION methods & models KW - ANNIHILATION reactions KW - CRYSTAL structure KW - ACTIVATION energy KW - Atomistic simulations KW - Copper KW - Embedded atom potentials KW - Nickel KW - Surface cross-slip N1 - Accession Number: 86419894; Rao, S.I. 1; Email Address: satish.rao.ctr@wpafb.af.mil Dimiduk, D.M. 2 Parthasarathy, T.A. 1 Uchic, M.D. 2 Woodward, C. 2; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Rd., Dayton, OH 45432-1894, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Apr2013, Vol. 61 Issue 7, p2500; Subject Term: NICKEL; Subject Term: COPPER; Subject Term: DISLOCATION nucleation; Subject Term: SIMULATION methods & models; Subject Term: ANNIHILATION reactions; Subject Term: CRYSTAL structure; Subject Term: ACTIVATION energy; Author-Supplied Keyword: Atomistic simulations; Author-Supplied Keyword: Copper; Author-Supplied Keyword: Embedded atom potentials; Author-Supplied Keyword: Nickel; Author-Supplied Keyword: Surface cross-slip; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.actamat.2013.01.026 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86419894&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yang, Y. AU - Bei, H. AU - Tiley, J. AU - George, E.P. T1 - Re effects on phase stability and mechanical properties of MoSS+Mo3Si+Mo5SiB2 alloys JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2013/04/15/ VL - 556 M3 - Article SP - 32 EP - 38 SN - 09258388 AB - Abstract: In this paper, we investigate the effects of Re additions on the microstructure and mechanical properties of a ternary alloy with the composition Mo-12.5Si-8.5B (at.%). This alloy has a three-phase microstructure consisting of Mo solid-solution (MoSS), Mo3Si, and Mo5SiB2 and our results show that up to 8.4at.% Re can be added to it without changing its microstructure or forming any brittle σ phase at 1600°C. Three-point bend tests using chevron-notched specimens showed that Re did not improve fracture toughness of the three-phase alloy. Nanoindentation performed on the MoSS phase in the three-phase alloy showed that Re increases Young’s modulus, but does not lower hardness as in some Mo solid solution alloys. Based on our thermodynamic calculations and microstructural analyses, the lack of a Re softening effect is attributed to the increased Si levels in the Re-containing MoSS phase since Si is known to increase its hardness. This lack of softening is possibly why there is no Re-induced improvement in fracture toughness. [Copyright &y& Elsevier] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TERNARY alloys KW - MATERIALS -- Mechanical properties KW - MICROSTRUCTURE KW - STABILITY (Mechanics) KW - RHENIUM KW - MOLYBDENUM alloys KW - SOLID solutions KW - High-temperature alloys KW - Intermetallics KW - Mechanical properties KW - Microstructure KW - Phase diagrams N1 - Accession Number: 85853569; Yang, Y. 1; Email Address: yangying@ornl.gov Bei, H. 1 Tiley, J. 2 George, E.P. 1,3; Affiliation: 1: Oak Ridge National Laboratory, Materials Science and Technology Division, Oak Ridge, TN 37831, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 3: University of Tennessee, Department of Materials Science and Engineering, Knoxville, TN 37996, USA; Source Info: Apr2013, Vol. 556, p32; Subject Term: TERNARY alloys; Subject Term: MATERIALS -- Mechanical properties; Subject Term: MICROSTRUCTURE; Subject Term: STABILITY (Mechanics); Subject Term: RHENIUM; Subject Term: MOLYBDENUM alloys; Subject Term: SOLID solutions; Author-Supplied Keyword: High-temperature alloys; Author-Supplied Keyword: Intermetallics; Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Phase diagrams; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jallcom.2012.12.047 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85853569&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patnaik, Anil K. AU - Roy, Sukesh AU - Gord, James R. T1 - Saturation of vibrational coherent anti-Stokes Raman scattering mediated by saturation of the rotational Raman transition. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2013/04/15/ VL - 87 IS - 4-B M3 - Article SP - 1 EP - 9 SN - 10502947 AB - Saturation of vibrational Raman coherence and coherent anti-Stokes Raman scattering (CARS) using femtosecond (fs) excitation pulses is investigated theoretically. The pump in a typical fs-CARS configuration has a bandwidth of a few hundred cm-1 that can couple tens of rotational states of room-air nitrogen molecules simultaneously, unlike in CARS with longer pulse durations. It is demonstrated that the vibrational coherence and also the vibrational CARS with fs excitation display saturationlike behavior once the rotational coherence is saturated. The Raman saturation threshold for the fs pump is numerically estimated to be at a peak intensity of ~1022 W/m², which is six to seven orders of magnitude higher than that in the nanosecond regime. The results are compared with the known saturation thresholds in different pulse-duration regimes and placed in perspective with other nonlinear thresholds reported in fs excitation regimes. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COHERENCE (Optics) KW - RAMAN scattering KW - ROTATIONAL motion KW - NUCLEAR rotational states KW - COMPARATIVE studies KW - NUMERICAL analysis N1 - Accession Number: 87714769; Patnaik, Anil K. 1,2; Email Address: anil.patnaik@wpafb.af.mil Roy, Sukesh 3 Gord, James R. 1; Affiliation: 1: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, Ohio 45433, USA 2: Department of Physics, Wright State University, Dayton, Ohio 45435, USA 3: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, Ohio 45431, USA; Source Info: Apr2013, Vol. 87 Issue 4-B, p1; Subject Term: COHERENCE (Optics); Subject Term: RAMAN scattering; Subject Term: ROTATIONAL motion; Subject Term: NUCLEAR rotational states; Subject Term: COMPARATIVE studies; Subject Term: NUMERICAL analysis; Number of Pages: 9p; Document Type: Article L3 - 10.1103/PhysRevA.87.043801 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87714769&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Leiweke, R. J. AU - Ganguly, B. N. T1 - Diode laser spectroscopic measurements of gas temperature in a pulsed dielectric barrier discharge using collisional broadening and shift of 1s3-2p2 and 1s5-2p7 argon transitions. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/04/14/ VL - 113 IS - 14 M3 - Article SP - 143302 PB - American Institute of Physics SN - 00218979 AB - The average gas temperature rise within an argon dielectric barrier discharge operating from 50 to 500 Torr excited by 5 kHz repetition rate fast rise time high voltage pulse has been measured. For these measurements within high pressure discharges, we have employed two novel gas temperature measurement techniques based upon tunable diode laser absorption spectroscopy that take advantage of the nonresonant collision line broadening and collisional frequency shifts from relatively strong argon 1s3-2p2 and 1s5-2p7 transitions from the metastable states. An in situ estimate of collisional broadening coefficients for both transitions have been obtained from 5 to 30 Torr data using an independent estimate of gas temperature from Doppler line width measurements. Our measurements show that the effect of the isolated line assumption inherent within the van der Waals collisional impact approximation limit begins to fail for the 1s3-2p2 and 1s5-2p7 spectral lines when collisional line broadening exceeds ∼23 GHz line separation at gas pressure >300 Torr with gas temperature near ambient. A comparison of gas temperature estimates from both line broadening and peak frequency shift shows that the frequency shift provides a more reliable measurement of gas temperature, indicating that the isolated line assumption holds for collisional peak frequency shifts, even for partially overlapping lines. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR lasers KW - RESEARCH KW - ARGON plasmas KW - SOLID-state lasers KW - TEMPERATURE measurements KW - NOBLE gases KW - THERMAL properties N1 - Accession Number: 86966638; Leiweke, R. J. 1 Ganguly, B. N. 2; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Road, Dayton, Ohio 45432, 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7919,; Source Info: Apr2013, Vol. 113 Issue 14, p143302; Subject Term: SEMICONDUCTOR lasers; Subject Term: RESEARCH; Subject Term: ARGON plasmas; Subject Term: SOLID-state lasers; Subject Term: TEMPERATURE measurements; Subject Term: NOBLE gases; Subject Term: THERMAL properties; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1063/1.4800556 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86966638&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kramb, R.C. AU - Ward, L.T. AU - Jensen, K.E. AU - Vaia, R.A. AU - Miracle, D.B. T1 - The structure of Cu–Zr glasses using a colloidal proxy system JO - Acta Materialia JF - Acta Materialia Y1 - 2013/04// VL - 61 IS - 6 M3 - Article SP - 2025 EP - 2032 SN - 13596454 AB - Abstract: We present a novel experimental technique for studying the structure of metallic glasses (specifically Cu–Zr) through a proxy system of charged colloidal particles. A dense suspension of two types of colloidal particles that match the relative size ratio and approximate the attractive interaction of Cu and Zr atoms is created. Confocal microscopy images are analyzed to find the location of tens of thousands of particles at each composition studied. The particle locations are used to determine the packing fraction, partial radial distribution functions and partial coordination numbers of each component as well as the shape of clusters (central atom and first shell neighbors) that form. These results are compared to experimental and simulation literature on Cu–Zr systems, with good agreement found among all structural properties. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COPPER-zirconium alloys KW - COLLOIDS KW - METALLIC glasses KW - SUSPENSIONS (Chemistry) KW - CONFOCAL microscopy KW - RADIAL distribution function KW - PACKING fractions KW - Amorphous materials KW - Colloidal glasses KW - Glass structure KW - Metallic glasses N1 - Accession Number: 85585306; Kramb, R.C. 1,2; Email Address: ryan.kramb.ctr@wpafb.af.mil Ward, L.T. 3 Jensen, K.E. 4 Vaia, R.A. 1 Miracle, D.B. 1; Affiliation: 1: AFRL/RX Materials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: National Research Council, Washington, DC 20001, USA 3: Department of Material Science and Engineering, The Ohio State University, Columbus, OH 43210, USA 4: Department of Physics, Harvard University, Cambridge, MA 02138, USA; Source Info: Apr2013, Vol. 61 Issue 6, p2025; Subject Term: COPPER-zirconium alloys; Subject Term: COLLOIDS; Subject Term: METALLIC glasses; Subject Term: SUSPENSIONS (Chemistry); Subject Term: CONFOCAL microscopy; Subject Term: RADIAL distribution function; Subject Term: PACKING fractions; Author-Supplied Keyword: Amorphous materials; Author-Supplied Keyword: Colloidal glasses; Author-Supplied Keyword: Glass structure; Author-Supplied Keyword: Metallic glasses; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.actamat.2012.12.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85585306&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kostoff, Ronald N. AU - Cummings, Russell M. T1 - Highly cited literature of high-speed compressible flow research JO - Aerospace Science & Technology JF - Aerospace Science & Technology Y1 - 2013/04// VL - 26 IS - 1 M3 - Article SP - 216 EP - 234 SN - 12709638 AB - Abstract: High-speed flow research has been sponsored and performed at differing levels of effort since the late 1800s. For example, hypersonic research has experienced numerous cycles since the 1950s, with various periods of high research activity, followed by equally long periods of very low activity. This lack of continuity in high-speed flow research has led to a situation where researchers of one “generation” often do not know what the researchers of previous “generations” have done, mainly due to large losses of institutional knowledge in government, industry, and academic organizations. Therefore, a chronically weak area in research papers, reports, and reviews is the complete identification of critical background documents that form the building blocks and intellectual heritage for modern compressible flow research. A method for systematically determining these critical references is presented in the context of its application to high-speed flow using Citation-Assisted Background, which is based on the assumption that many critical documents tend to be highly cited within the literature, although not necessarily recently. While Citation-Assisted Background is a highly systematic approach for identifying critical references, it is not a substitute for the judgement of the researchers, but rather complements their expertise. In this critical review of high-speed compressible flow, important documents have been identified using Citation-Assisted Background, but other documents have been added by the authors to enhance the picture provided by the highly-cited documents. [Copyright &y& Elsevier] AB - Copyright of Aerospace Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPRESSIBLE flow (Fluid dynamics) KW - HYPERSONIC aerodynamics KW - PERFORMANCE evaluation KW - FORCE & energy KW - AERODYNAMICS KW - AIR forces KW - Citation analysis KW - Compressible flow KW - Computational fluid dynamics KW - High speed KW - Hypersonic KW - Literature review KW - Literature survey KW - Ramjet KW - Scramjet KW - Supersonic KW - Transonic N1 - Accession Number: 86422044; Kostoff, Ronald N. 1 Cummings, Russell M. 2; Affiliation: 1: Georgia Institute of Technology, Gainesville, VA 20155, United States 2: United States Air Force Academy, USAF Academy, CO 80840, United States; Source Info: Apr2013, Vol. 26 Issue 1, p216; Subject Term: COMPRESSIBLE flow (Fluid dynamics); Subject Term: HYPERSONIC aerodynamics; Subject Term: PERFORMANCE evaluation; Subject Term: FORCE & energy; Subject Term: AERODYNAMICS; Subject Term: AIR forces; Author-Supplied Keyword: Citation analysis; Author-Supplied Keyword: Compressible flow; Author-Supplied Keyword: Computational fluid dynamics; Author-Supplied Keyword: High speed; Author-Supplied Keyword: Hypersonic; Author-Supplied Keyword: Literature review; Author-Supplied Keyword: Literature survey; Author-Supplied Keyword: Ramjet; Author-Supplied Keyword: Scramjet; Author-Supplied Keyword: Supersonic; Author-Supplied Keyword: Transonic; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.ast.2012.04.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86422044&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Swindeman, Michael J. AU - Iarve, Endel V. AU - Brockman, Robert A. AU - Mollenhauer, David H. AU - Hallett, Stephen R. T1 - Strength Prediction in Open Hole Composite Laminates by Using Discrete Damage Modeling. JO - AIAA Journal JF - AIAA Journal Y1 - 2013/04// VL - 51 IS - 4 M3 - Article SP - 936 EP - 945 SN - 00011452 AB - The present paper addresses the issue of direct simulation of complex local failure patterns in laminated composites. A model capable of the discrete modeling of matrix cracking, delamination, and the interaction of these two damage modes is proposed. The analytical technique develops the regularized extended finite element method for the simulation of matrix crack initiation and propagation at initially unknown locations, as well as a cohesive interface model for delamination. The regularized extended finite element method preserves the Gaussian integration schema in each dement regardless of the enrichment required to model cracking and is capable of representing the complex kinematics of crack networks in composite laminates. The technique uses independently measured standard ply-level mechanical properties of the unidirectional composite (stiffness, strength, fracture toughness). Failure simulations of composites containing open holes are presented. Although the process of crack initiation is impossible to capture precisely due to local material variations the proposed method exhibits excellent agreement with experimental data for matrix and delamination crack growth in quasi-isotropic open hole graphite-epoxy composites with thick plies, where the composite fails in the delamination failure mode. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAMINATED materials KW - RESEARCH KW - COMPOSITE materials -- Research KW - GRAPHITE composites KW - CARBON composites KW - KINEMATICS KW - FRACTURE mechanics N1 - Accession Number: 86704913; Swindeman, Michael J. 1,2 Iarve, Endel V. 1,2 Brockman, Robert A. 1,2 Mollenhauer, David H. 2,3 Hallett, Stephen R. 4; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469 2: Member AIAA 3: U.S. Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433-7750 4: University of Bristol, Bristol, England BS8 1TR, United Kingdom; Source Info: Apr2013, Vol. 51 Issue 4, p936; Subject Term: LAMINATED materials; Subject Term: RESEARCH; Subject Term: COMPOSITE materials -- Research; Subject Term: GRAPHITE composites; Subject Term: CARBON composites; Subject Term: KINEMATICS; Subject Term: FRACTURE mechanics; Number of Pages: 10p; Document Type: Article L3 - 10.2514/1.J051773 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86704913&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Shannon C. AU - Baktash, Suzanne H. AU - Webb, Timothy S. AU - Whitehead, Casserly R. AU - Maynard, Charles AU - Wells, Timothy S. AU - Otte, Clifford N. AU - Gore, Russel K. T1 - Risk for Addiction-Related Disorders Following Mild Traumatic Brain Injury in a Large Cohort of Active-Duty U.S. Airmen. JO - American Journal of Psychiatry JF - American Journal of Psychiatry Y1 - 2013/04// VL - 170 IS - 4 M3 - Article SP - 383 EP - 390 SN - 0002953X AB - Objective: Military personnel are at increased risk for traumatic brain injury (TBI) from combat and noncombat exposures. The sequelae of moderate to severe TBI are well described, but little is known regarding long-term performance decrements associated with mild TBI. Furthermore, while alcohol and drug use are well known to increase risk for TBI, little is known regarding the reverse pattern. The authors sought to assess possible associations between mild TBI and addiction-related disorders in active-duty U.S. military personnel. Method: A historical prospective study was conducted using electronically recorded demographic, medical, and military data for more than a half million active-duty U.S. Air Force service members. Cases were identified by ICD-9-CM codes considered by an expert panel to be indicative of mild TBI. Outcomes included ICD-9-CM diagnoses of selected addiction- related disorders. Cox proportional hazards modeling was used to calculate hazard ratios while controlling for varying lengths of follow-up and potential confounding variables. Results: Airmen with mild TBI were at increased risk for certain addiction-related disorders compared with a similarly injured non-mild TBI comparison group. Hazards for alcohol dependence, nicotine dependence, and nondependent abuse of drugs or alcohol were significantly elevated, with a consistent decrease over time. Conclusions: A novel finding of this study was the initial increased risk for addiction-related disorders that decreased with time, thus eroding war fighter performance in a military population. Moreover, these results suggest that mild TBI is distinguished from moderate to severe TBI in terms of timing of the risk, indicating that there is a need for screening and prevention of addiction-related disorders in mild TBI. Screening may be warranted in military troops as well as civilians at both short- and long-term milestones following mild TBI. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Psychiatry is the property of American Psychiatric Publishing, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BRAIN -- Wounds & injuries -- Research KW - AIRMEN KW - WOUNDS & injuries KW - MILITARY personnel -- Diseases KW - NOSOLOGY KW - UNITED States N1 - Accession Number: 86679456; Miller, Shannon C. 1,2,3,4,5,6,7,8 Baktash, Suzanne H. 1,2,3,4,5,6,7,8 Webb, Timothy S. 1,2,3,4,5,6,7,8 Whitehead, Casserly R. 1,2,3,4,5,6,7,8; Email Address: casserly.whitehead.ctr@wpafb.af.mil Maynard, Charles 1,2,3,4,5,6,7,8 Wells, Timothy S. 1,2,3,4,5,6,7,8 Otte, Clifford N. 1,2,3,4,5,6,7,8 Gore, Russel K. 1,2,3,4,5,6,7,8; Affiliation: 1: Veterans Affairs Medical Center, Cincinnati 2: Center for Treatment, Research, and Education in Addictive Disorders, University of Cincinnati 3: Department of Psychiatry and Behavioral Neuroscience, Cincinnati 4: Department of Electrical Engineering and Computer Science, University of Tennessee, Knoxville 5: Vulnerability Analysis Branch, AFMC 711 Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 6: Infoscitex Corporation, Waltham, Mass. 7: Epidemiologic Research and Information Center, VA Puget Sound, Seattle 8: Department of Neurology, Emory University School of Medicine, Atlanta; Source Info: Apr2013, Vol. 170 Issue 4, p383; Subject Term: BRAIN -- Wounds & injuries -- Research; Subject Term: AIRMEN; Subject Term: WOUNDS & injuries; Subject Term: MILITARY personnel -- Diseases; Subject Term: NOSOLOGY; Subject Term: UNITED States; Number of Pages: 8p; Document Type: Article L3 - 10.1176/appi.ajp.2012.12010126 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86679456&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, Jeffery S. AU - Ghahramanlou-Holloway, Marjan AU - Englert, David R. AU - Bakalar, Jennifer L. AU - Olsen, Cara AU - Nademin, Elicia M. AU - Jobes, David A. AU - Branlund, Shannon T1 - Marital Status, Life Stressor Precipitants, and Communications of Distress and Suicide Intent in a Sample of United States Air Force Suicide Decedents. JO - Archives of Suicide Research JF - Archives of Suicide Research Y1 - 2013/04// VL - 17 IS - 2 M3 - Article SP - 148 EP - 160 SN - 13811118 AB - Life stressor precipitants and communications of distress and suicide intent were examined among a sample of United States Air Force (USAF) married versus unmarried suicide decedents. A total of 100 death investigations conducted by the Office of Special Investigations on active duty USAF suicides occurring between 1996 and 2006 were retrospectively reviewed. Married decedents were twice as likely 1) to have documented interpersonal conflict 24 hours prior to suicide and 2) to have communicated suicide intent to peers or professionals. Themes of distress communication for all decedents were intrapersonal (perceived stress, depression, psychological pain) and interpersonal (thwarted belongingness, rejection, loneliness). Suicide prevention programs and policies are encouraged to adapt efforts to the unique needs of married and unmarried individuals. [ABSTRACT FROM AUTHOR] AB - Copyright of Archives of Suicide Research is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MARITAL status KW - SUICIDAL behavior KW - PSYCHOLOGICAL autopsy KW - LONELINESS KW - PAIN -- Psychological aspects KW - AIRMEN KW - MENTAL depression KW - PERCEIVED Stress Scale KW - UNITED States KW - Air force KW - marital status KW - military KW - prevention KW - psychological autopsy KW - suicide N1 - Accession Number: 87398884; Martin, Jeffery S. 1 Ghahramanlou-Holloway, Marjan 1; Email Address: marjan.holloway@usuhs.edu Englert, David R. 2 Bakalar, Jennifer L. 1 Olsen, Cara 1 Nademin, Elicia M. 3 Jobes, David A. 4 Branlund, Shannon 1; Affiliation: 1: Department of Medical and Clinical Psychology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA 2: United States Air Force Office of Special Investigations, Andrews Air Force Base, Maryland, USA 3: Carl T. Hayden VA Medical Center, Phoenix, AZ, USA 4: Department of Psychology, Catholic University, Washington, D.C., USA; Source Info: Apr2013, Vol. 17 Issue 2, p148; Subject Term: MARITAL status; Subject Term: SUICIDAL behavior; Subject Term: PSYCHOLOGICAL autopsy; Subject Term: LONELINESS; Subject Term: PAIN -- Psychological aspects; Subject Term: AIRMEN; Subject Term: MENTAL depression; Subject Term: PERCEIVED Stress Scale; Subject Term: UNITED States; Author-Supplied Keyword: Air force; Author-Supplied Keyword: marital status; Author-Supplied Keyword: military; Author-Supplied Keyword: prevention; Author-Supplied Keyword: psychological autopsy; Author-Supplied Keyword: suicide; Number of Pages: 13p; Document Type: Article L3 - 10.1080/13811118.2013.776456 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87398884&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kuridze, D. AU - Mathioudakis, M. AU - Kowalski, A. F AU - Keys, P. H. AU - Jess, D. B. AU - Balasubramaniam, K. S. AU - Keenan, F. P. T1 - Failed filament eruption inside a coronal mass ejection in active region 11121. JO - Astronomy & Astrophysics / Astronomie et Astrophysique JF - Astronomy & Astrophysics / Astronomie et Astrophysique Y1 - 2013/04// VL - 552 IS - 1 M3 - Article SP - 1 EP - 7 SN - 00046361 AB - Aims. We study the formation and evolution of a failed filament eruption observed in NOAA active region 11121 near the southeast limb on November 6, 2010. Methods. We used a time series of SDO/AIA 304, 171, 131, 193, 335, and 94 Å images, SDO/HMI magnetograms, as well as ROSA and ISOON Hα images to study the erupting active region. Results. We identify coronal loop arcades associated with a quadrupolar magnetic configuration, and show that the expansion and cancellation of the central loop arcade system over the filament is followed by the eruption of the filament. The erupting filament reveals a clear helical twist and develops the same sign of writhe in the form of inverse -shape. Conclusions. The observations support the "magnetic breakout" process in which the eruption is triggered by quadrupolar reconnection in the corona. We propose that the formation mechanism of the inverse γ-shape flux rope is the magnetohydrodynamic helical kink instability. The eruption has failed because of the large-scale, closed, overlying magnetic loop arcade that encloses the active region. [ABSTRACT FROM AUTHOR] AB - Copyright of Astronomy & Astrophysics / Astronomie et Astrophysique is the property of EDP Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR activity KW - CORONAL mass ejections KW - MAGNETOHYDRODYNAMICS KW - ASTRONOMY KW - ASTROPHYSICS KW - prominences KW - Sun: chromosphere KW - Sun: corona KW - Sun: coronal mass ejections (CMEs) KW - Sun: filaments KW - Sun: flares KW - Sun: magnetic topology N1 - Accession Number: 87078653; Kuridze, D. 1,2; Email Address: dkuridze01@qub.ac.uk Mathioudakis, M. 1 Kowalski, A. F 3 Keys, P. H. 1 Jess, D. B. 1,4 Balasubramaniam, K. S. 5 Keenan, F. P. 1; Affiliation: 1: Astrophysics Research Centre, School of Mathematics and Physics, Queen's University, Belfast, BT7 1NN, Northern Ireland, UK 2: Abastumani Astrophysical Observatory, Ilia State University, G. Tsereteli 3, 0612 Tbilisi, Georgia 3: Department of Astronomy, University of Washington, Box 351580, Seattle, WA 98195, USA 4: Centre for mathematical Plasma Astrophysics, Mathematics Department, KU Leuven, Celestijnenlaan 200B bus 2400, 3001 Heverlee, Belgium 5: Air Force Research Laboratory, Solar and Solar Disturbances, Sunspot, NM 88349, USA; Source Info: Apr2013, Vol. 552 Issue 1, p1; Subject Term: SOLAR activity; Subject Term: CORONAL mass ejections; Subject Term: MAGNETOHYDRODYNAMICS; Subject Term: ASTRONOMY; Subject Term: ASTROPHYSICS; Author-Supplied Keyword: prominences; Author-Supplied Keyword: Sun: chromosphere; Author-Supplied Keyword: Sun: corona; Author-Supplied Keyword: Sun: coronal mass ejections (CMEs); Author-Supplied Keyword: Sun: filaments; Author-Supplied Keyword: Sun: flares; Author-Supplied Keyword: Sun: magnetic topology; Number of Pages: 7p; Document Type: Article L3 - 10.1051/0004-6361/201220055 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87078653&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Trocha-Van Nort, Andrea T1 - Want of Speech in RICHARD II. JO - Explicator JF - Explicator Y1 - 2013/04// VL - 71 IS - 2 M3 - Literary Criticism SP - 127 EP - 130 SN - 00144940 AB - A critique is presented of the play "Richard II" by William Shakespeare, focusing on references to the judicial torture practice of pressing and the theme of an inability to speak. Suffering, capital punishment, and the characters of Richard and the Queen are discussed, as well as the poem "The Rape of Lucrece" by Shakespeare. KW - TORTURE in literature KW - SUFFERING in literature KW - CAPITAL punishment in literature KW - King Richard II KW - metaphor KW - retributive punishment KW - Richard II KW - torture KW - William Shakespeare KW - SHAKESPEARE, William, 1564-1616 KW - RICHARD II (Play : Shakespeare) KW - RAPE of Lucrece, The (Poem : Shakespeare) N1 - Accession Number: 88071109; Trocha-Van Nort, Andrea 1; Affiliation: 1: United States Air Force Academy; Source Info: 2013, Vol. 71 Issue 2, p127; Subject Term: TORTURE in literature; Subject Term: SUFFERING in literature; Subject Term: CAPITAL punishment in literature; Author-Supplied Keyword: King Richard II; Author-Supplied Keyword: metaphor; Author-Supplied Keyword: retributive punishment; Author-Supplied Keyword: Richard II; Author-Supplied Keyword: torture; Author-Supplied Keyword: William Shakespeare; Reviews & Products: RICHARD II (Play : Shakespeare); Reviews & Products: RAPE of Lucrece, The (Poem : Shakespeare); People: SHAKESPEARE, William, 1564-1616; Number of Pages: 4p; Document Type: Literary Criticism L3 - 10.1080/00144940.2013.781006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=88071109&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kwon, Yangsoo AU - Narayanan, Ram M. AU - Rangaswamy, Muralidhar T1 - Multi-Target Detection using Total Correlation for Noise Radar Systems. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2013/04// VL - 49 IS - 2 M3 - Article SP - 1251 EP - 1262 SN - 00189251 AB - Target detection is one of the important functions of radar systems. In this paper, we present a detection method using total correlation (TC) based on information theory for noise radar systems which enables the detection of multiple targets at intermediate and low signal-to-noise ratio (SNR) regimes. The proposed method utilizes the largest eigenvalue of the sample covariance matrix to extract information from the transmitted signal replica, and outperforms the conventional TC detector when reflected signals have intermediate or low SNR values. Additionally, in order to avoid ambiguous target occurrence, we propose an adaptive threshold to guarantee the detection performance with the same receiving antenna elements for a given false alarm probability. The threshold is computed from the largest and smallest eigenvalue distributions based on random matrix theory. Simulations show that the proposed detection method can be used for a wide range of SNR environments, and the threshold provides definitive target detection. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIGNAL detection KW - ELECTRONIC systems KW - DETECTORS KW - RADARSAT satellites KW - SIGNAL-to-noise ratio N1 - Accession Number: 86779837; Kwon, Yangsoo 1 Narayanan, Ram M. 1 Rangaswamy, Muralidhar 2; Affiliation: 1: The Pennsylvania State University 2: Air Force Research Laboratory; Source Info: Apr2013, Vol. 49 Issue 2, p1251; Subject Term: SIGNAL detection; Subject Term: ELECTRONIC systems; Subject Term: DETECTORS; Subject Term: RADARSAT satellites; Subject Term: SIGNAL-to-noise ratio; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TAES.2013.6494411 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86779837&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Horvath, Matthew S. AU - Gorham, Leroy A. AU - Rigling, Brian D. T1 - Scene Size Bounds for PFA Imaging with Postfiltering. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2013/04// VL - 49 IS - 2 M3 - Article SP - 1402 EP - 1406 SN - 00189251 AB - The polar format algorithm (PFA) for synthetic aperture radar (SAR) image formation utilizes a first-order Taylor approximation of the differential range to improve computational efficiency, leading to image distortion and defocus. Limiting scene size by bounding the second-order Taylor series terms can restrict the impact of these errors, or alternatively, one may correct for these errors through spatially-variant filtering in post processing. In this letter we analyze the increase in allowable scene size that is realized through such processing. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC systems KW - IMAGING systems KW - RADARSAT satellites KW - DETECTORS KW - ALGORITHMS N1 - Accession Number: 86779853; Horvath, Matthew S. 1 Gorham, Leroy A. 2 Rigling, Brian D. 3; Affiliation: 1: MacAulay-Brown, Inc. 2: Air Force Research Laboratory 3: Wright State University; Source Info: Apr2013, Vol. 49 Issue 2, p1402; Subject Term: ELECTRONIC systems; Subject Term: IMAGING systems; Subject Term: RADARSAT satellites; Subject Term: DETECTORS; Subject Term: ALGORITHMS; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TAES.2013.6494427 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86779853&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - De, Soumya AU - Gupta, Kapil AU - Stanley, R. Joe AU - Ghasr, Mohammad T. AU - Zoughi, Reza AU - Doering, Kenneth AU - Van Aken, David C. AU - Steffes, Gary AU - O'Keefe, Matt AU - Palmer, Donald D. T1 - A Comprehensive Multi-Modal NDE Data Fusion Approach for Failure Assessment in Aircraft Lap-Joint Mimics. JO - IEEE Transactions on Instrumentation & Measurement JF - IEEE Transactions on Instrumentation & Measurement Y1 - 2013/04// VL - 62 IS - 4 M3 - Article SP - 814 EP - 827 SN - 00189456 AB - Multi-modal data fusion techniques are commonly used to enhance decision-making processes. In previous research, a comprehensive structural analysis process was developed for quantizing and evaluating characteristics of defects in aircraft lap-joint mimics using eddy current (EC) nondestructive evaluation (NDE) data collected for structural health monitoring. In this research, a comprehensive multi-modal structural analysis process is presented that includes intra- and inter-modal NDE data fusion based on EC, millimeter wave (MW), and ultrasonic (UT) data obtained from five lap-joint mimic test panels. The process includes defect detection, defect characterization, and finite-element modeling-based simulated fatigue loading for structural analysis. The multi-modal structural analysis process is evaluated using four test panels with corroded patches at different layers of the lap joints and one painted pristine panel used as a reference. The test panels are subjected to two rounds of mechanical loading, preceded by multi-modal NDE data obtained before each round. Different NDE modality combinations are examined for test panel modeling, including: 1) EC, 2) UT, 3) MW, 4) EC and UT, 5) EC and MW, and 6) EC, UT, and MW. Experiments are performed to compare the simulated fatigue loading, based on models determined from the different modality combinations, and the mechanical loading results to find susceptible-to-failure areas in the test panels. Experimental results showed that the EC and UT modality combination yielded a correct vulnerable (crack) location recognition rate of 98.8%, an improvement of 14.7% over any individual modality, demonstrating the potential for multi-modal data fusion for characterizing corrosion and defects. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Instrumentation & Measurement is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DECISION making KW - DATA fusion (Statistics) KW - MULTISENSOR data fusion KW - EDDY currents (Electric) KW - FINITE element method KW - Aircraft KW - Corrosion KW - Data integration KW - Detectors KW - Eddy Current (EC) KW - Fatigue KW - image analysis KW - Loading KW - Materials KW - microwave KW - millimeter wave (MW) KW - multi-modal data fusion KW - nondestructive evaluation (NDE) KW - structural analysis KW - structural health monitoring KW - ultrasound N1 - Accession Number: 86002205; De, Soumya 1 Gupta, Kapil 2 Stanley, R. Joe 3 Ghasr, Mohammad T. 3 Zoughi, Reza 3 Doering, Kenneth 4 Van Aken, David C. 4 Steffes, Gary 5 O'Keefe, Matt 4 Palmer, Donald D. 6; Affiliation: 1: Department of Electrical and Computer Engineering, Missouri University of Science and Technology (S&T), Rolla, MO, USA 2: Coherix Inc., Ann Arbor, MI, USA 3: Department of Electrical and Computer Engineering, Missouri University of Science and Technology (S&T), Rolla, USA 4: Department of Materials Science and Engineering, Missouri University of Science and Technology (S&T), Rolla, USA 5: Air Force Research Laboratory (AFRL), Wright Patterson, OH, USA 6: The Boeing Company, Boeing Phantom Works, St. Louis, MO, USA; Source Info: Apr2013, Vol. 62 Issue 4, p814; Subject Term: DECISION making; Subject Term: DATA fusion (Statistics); Subject Term: MULTISENSOR data fusion; Subject Term: EDDY currents (Electric); Subject Term: FINITE element method; Author-Supplied Keyword: Aircraft; Author-Supplied Keyword: Corrosion; Author-Supplied Keyword: Data integration; Author-Supplied Keyword: Detectors; Author-Supplied Keyword: Eddy Current (EC); Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: image analysis; Author-Supplied Keyword: Loading; Author-Supplied Keyword: Materials; Author-Supplied Keyword: microwave; Author-Supplied Keyword: millimeter wave (MW); Author-Supplied Keyword: multi-modal data fusion; Author-Supplied Keyword: nondestructive evaluation (NDE); Author-Supplied Keyword: structural analysis; Author-Supplied Keyword: structural health monitoring; Author-Supplied Keyword: ultrasound; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TIM.2013.2240931 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86002205&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Franzi, Matthew A. AU - Gilgenbach, Ronald M. AU - Hoff, Brad W. AU - Chalenski, David A. AU - Simon, David AU - Lau, Y. Y. AU - Luginsland, John T1 - Recirculating-Planar-Magnetron Simulations and Experiment. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2013/04//Apr2013 Part 1 VL - 41 IS - 4 M3 - Article SP - 639 EP - 645 SN - 00933813 AB - Microwave oscillation has been measured for the first time in a 12-cavity axial-magnetic-field recirculating planar magnetron, designed to operate in \pi mode at 1 GHz. The device operates with a -300-kV pulsed cathode voltage and a 0.2-T axial magnetic field, and oscillates at transverse currents exceeding 1 kA when driven by an electron beam pulselength between 0.5 and 1 \mu\s. Microwave pulses were measured at frequencies between 0.97–1 GHz and achieved several hundred nanoseconds in length. Mode competition was observed between the \pi and 5 \pi/6 modes. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - MAGNETIC fields KW - ELECTRON beams KW - ELECTRIC currents KW - GIRDERS KW - Anodes KW - Cathodes KW - Cavity magnetron KW - Cavity resonators KW - high power microwave KW - Magnetic resonance KW - Microwave measurement KW - Microwave oscillators KW - recirculating planar magnetron (RPM) KW - vacuum electronics N1 - Accession Number: 86975457; Franzi, Matthew A. 1 Gilgenbach, Ronald M. 2 Hoff, Brad W. 3 Chalenski, David A. 2 Simon, David 1 Lau, Y. Y. 2 Luginsland, John 4; Affiliation: 1: Plasma, Pulsed Power, and Microwave Laboratory, University of Michigan , Ann Arbor, MI, USA 2: Plasma, Pulsed Power, and Microwave Laboratory, University of Michigan, Ann Arbor, MI, USA 3: Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, NM, USA 4: Air Force Office of Scientific Research, Arlington, VA, USA; Source Info: Apr2013 Part 1, Vol. 41 Issue 4, p639; Subject Term: MAGNETRONS; Subject Term: MAGNETIC fields; Subject Term: ELECTRON beams; Subject Term: ELECTRIC currents; Subject Term: GIRDERS; Author-Supplied Keyword: Anodes; Author-Supplied Keyword: Cathodes; Author-Supplied Keyword: Cavity magnetron; Author-Supplied Keyword: Cavity resonators; Author-Supplied Keyword: high power microwave; Author-Supplied Keyword: Magnetic resonance; Author-Supplied Keyword: Microwave measurement; Author-Supplied Keyword: Microwave oscillators; Author-Supplied Keyword: recirculating planar magnetron (RPM); Author-Supplied Keyword: vacuum electronics; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TPS.2013.2242493 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86975457&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kosai, Hiroyuki AU - Scofield, James AU - McNeal, Seana AU - Jordan, Brett AU - Ray, Biswajit T1 - Design and Performance Evaluation of a 200 °C Interleaved Boost Converter. JO - IEEE Transactions on Power Electronics JF - IEEE Transactions on Power Electronics Y1 - 2013/04// VL - 28 IS - 4 M3 - Article SP - 1691 EP - 1699 SN - 08858993 AB - Recent advances in silicon carbide (SiC) power semiconductor technology and resulting availability of SiC Schottky rectifiers and controlled devices (bipolar junction transistors, JFETs, and MOSFETs) make it possible to design and implement power converters capable of operating at 200 °C. The design, prototype development, operation, and testing of a 74 kHz, 2 kW, 100 V/270 V inversely coupled, interleaved, dc–dc boost converter over the 20–200 °C temperature range is presented in this paper. The advantages of coupled-inductor interleaved boost converters include increased efficiency, reduced size, reduced electromagnetic emission, faster transient response, and improved reliability. Optimization of a high temperature X-perm core-based coupled inductor architecture, in terms of ac flux balancing and dc flux cancellation is discussed. DC characterization of SiC power devices used in the design (Schottky rectifier and JFET) over the 20–200 °C temperature range is presented as well. The power stage of the converter, including the power semiconductor devices, coupled inductor, and X7R ceramic input and output filter capacitors, was placed inside a temperature controlled chamber for testing. JFET gate drive circuit, input power source, and output load were external to the environmental chamber. Converter testing and performance evaluation was accomplished over a 20–200 °C ambient temperature range. As expected, JFET conduction loss increased and converter efficiency decreased with increasing temperatures. The drop in converter efficiency was in the range of 2%–4% over the entire load (200 W to 2 kW) and temperature (20–200 °C) ranges evaluated. At 200 °C, output voltage ripple increased by ∼60% due to the rapid decline in X7R capacitance at the high-temperature extreme. The results obtained during this study suggest that the realization of 200 °C power converters is feasible through a judicious selection of power semiconductor devices, magnetic core materials, and capacitor dielectrics. As a result, high temperature, frequency, and power density converters are expected to be a reality in the near future. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Power Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERFORMANCE evaluation KW - SILICON carbide KW - POWER semiconductors KW - CASCADE converters KW - SCHOTTKY effect KW - ELECTRIC current rectifiers KW - ELECTRIC inductors KW - Coupled inductor KW - dc/dc converter KW - high temperature KW - Inductors KW - interleaved boost converter (IBC) KW - JFETs KW - Magnetic cores KW - Schottky diodes KW - Silicon carbide KW - silicon carbide (SiC) KW - Temperature measurement KW - Windings N1 - Accession Number: 101265182; Kosai, Hiroyuki 1 Scofield, James 2 McNeal, Seana 2 Jordan, Brett 2 Ray, Biswajit 3; Affiliation: 1: Universal Energy Systems, Dayton, USA 2: Air Force Research Laboratory , Wright-Patterson Air Force Base, OH, USA 3: Department of Electronics Engineering Technology, Bloomsburg University of Pennsylvania, Bloomsburg, USA; Source Info: Apr2013, Vol. 28 Issue 4, p1691; Subject Term: PERFORMANCE evaluation; Subject Term: SILICON carbide; Subject Term: POWER semiconductors; Subject Term: CASCADE converters; Subject Term: SCHOTTKY effect; Subject Term: ELECTRIC current rectifiers; Subject Term: ELECTRIC inductors; Author-Supplied Keyword: Coupled inductor; Author-Supplied Keyword: dc/dc converter; Author-Supplied Keyword: high temperature; Author-Supplied Keyword: Inductors; Author-Supplied Keyword: interleaved boost converter (IBC); Author-Supplied Keyword: JFETs; Author-Supplied Keyword: Magnetic cores; Author-Supplied Keyword: Schottky diodes; Author-Supplied Keyword: Silicon carbide; Author-Supplied Keyword: silicon carbide (SiC); Author-Supplied Keyword: Temperature measurement; Author-Supplied Keyword: Windings; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TPEL.2012.2208124 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101265182&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, B.E. AU - Kabir, Md. E. AU - Chen, W. T1 - Undrained high-pressure and high strain-rate response of dry sand under triaxial loading JO - International Journal of Impact Engineering JF - International Journal of Impact Engineering Y1 - 2013/04// VL - 54 M3 - Article SP - 51 EP - 63 SN - 0734743X AB - Abstract: A Kolsky bar was modified to conduct triaxial compression experiments at high rates under the same stress state as in quasi-static conventional triaxial compression tests. Using this experimental technique the triaxial compression response of Quikrete® 1961 sand at dry conditions was investigated at varying levels of confining pressure, strain rate, and initial density. The results show that the response of sand has negligible dependencies on strain rate and initial density, but is highly pressure dependent. The ability to impose a triaxial stress state allows the results to form a foundation for constitutive model development. [Copyright &y& Elsevier] AB - Copyright of International Journal of Impact Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH pressure (Technology) KW - STRAINS & stresses (Mechanics) KW - AXIAL loads KW - COMPRESSION loads KW - QUASISTATIC processes KW - SCIENTIFIC experimentation KW - Confinement KW - High pressure KW - High rate KW - Sand KW - Split-Hopkinson Pressure Bar N1 - Accession Number: 85174340; Martin, B.E. 1; Email Address: bradley.martin@eglin.af.mil Kabir, Md. E. 2 Chen, W. 2; Affiliation: 1: Air Force Research laboratory, Eglin AFB, FL 32542, USA 2: Department of Aeronautics and Astronautics Engineering, Purdue University, West Lafayette, IN 47907, USA; Source Info: Apr2013, Vol. 54, p51; Subject Term: HIGH pressure (Technology); Subject Term: STRAINS & stresses (Mechanics); Subject Term: AXIAL loads; Subject Term: COMPRESSION loads; Subject Term: QUASISTATIC processes; Subject Term: SCIENTIFIC experimentation; Author-Supplied Keyword: Confinement; Author-Supplied Keyword: High pressure; Author-Supplied Keyword: High rate; Author-Supplied Keyword: Sand; Author-Supplied Keyword: Split-Hopkinson Pressure Bar; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.ijimpeng.2012.10.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85174340&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Visbal, Miguel AU - Yilmaz, Turgut O. AU - Rockwell, Donald T1 - Three-dimensional vortex formation on a heaving low-aspect-ratio wing: Computations and experiments JO - Journal of Fluids & Structures JF - Journal of Fluids & Structures Y1 - 2013/04// VL - 38 M3 - Article SP - 58 EP - 76 SN - 08899746 AB - Abstract: This paper addresses by means of high-resolution numerical simulations and experimental quantitative imaging the three-dimensional unsteady separation process induced by large-amplitude heaving oscillations of a low-aspect-ratio wing under low-Reynolds-number conditions. Computed results are found to be in good agreement with experimental flow visualizations and PIV measurements on selected cross-flow planes. The complex unsteady three-dimensional flow structure generated during dynamic stall of the low-aspect-ratio wing is elucidated. The process is characterized by the generation of a leading-edge vortex system which is pinned at the front corners of the plate and which exhibits intense transverse flow toward the wing centerline during its initial stages of development. This vortex detaches from the corners and evolves into an newly found arch-type structure. The legs of the arch vortex move along the surface toward the wing centerline and reconnect forming a ring-like structure which is shed as the next plunging cycle begins. Vortex breakdown, total collapse and reformation of the wing tip vortices are also observed at various stages of the heaving motion. At the relatively high value of reduced frequency considered, these basic flow elements of the complex three-dimensional dynamic stall process are found to persist over a range of Reynolds numbers. [Copyright &y& Elsevier] AB - Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THREE-dimensional imaging KW - ASPECT ratio (Images) KW - HIGH resolution imaging KW - COMPUTER simulation KW - QUANTITATIVE research KW - EXPERIMENTS KW - OSCILLATIONS KW - REYNOLDS number KW - Dynamic stall KW - Unsteady flows KW - Vortices KW - Wing aerodynamics N1 - Accession Number: 85914995; Visbal, Miguel 1; Email Address: miguel.visbal@wpafb.af.mil Yilmaz, Turgut O. 2 Rockwell, Donald 2; Affiliation: 1: US Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7512, USA 2: Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA 18015, USA; Source Info: Apr2013, Vol. 38, p58; Subject Term: THREE-dimensional imaging; Subject Term: ASPECT ratio (Images); Subject Term: HIGH resolution imaging; Subject Term: COMPUTER simulation; Subject Term: QUANTITATIVE research; Subject Term: EXPERIMENTS; Subject Term: OSCILLATIONS; Subject Term: REYNOLDS number; Author-Supplied Keyword: Dynamic stall; Author-Supplied Keyword: Unsteady flows; Author-Supplied Keyword: Vortices; Author-Supplied Keyword: Wing aerodynamics; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.jfluidstructs.2012.12.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85914995&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanford, Bret AU - Beran, Philip AU - Snyder, Richard AU - Patil, Mayuresh T1 - Stability and power optimality in time-periodic flapping wing structures JO - Journal of Fluids & Structures JF - Journal of Fluids & Structures Y1 - 2013/04// VL - 38 M3 - Article SP - 238 EP - 254 SN - 08899746 AB - Abstract: This paper investigates the nonlinear dynamics of a vehicle with two flexible flapping wings. The body dynamics and the wings’ deformation are monolithically grouped into a single system of equations, with aerodynamics accounted for by a quasi-steady blade element method. A periodic shooting method is then used to locate closed orbits of this non-autonomous system, and Floquet multipliers assess the linearized stability about the nonlinear orbit. This framework is then exposed to a gradient based optimizer, in order to quantify the role of wing planform variables, wing structure variables, and kinematic actuation variables in obtaining vehicles with superior open-loop stability characteristics, and/or low-power requirements. [Copyright &y& Elsevier] AB - Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORNITHOPTERS KW - STRUCTURAL stability KW - NONLINEAR dynamical systems KW - DEFORMATIONS (Mechanics) KW - AERODYNAMICS KW - KINEMATICS KW - EQUATIONS -- Numerical solutions KW - Aeroelastic tailoring KW - Flexible flapping wings KW - Flight dynamics KW - Floquet multipliers N1 - Accession Number: 85915006; Stanford, Bret 1; Email Address: bretkennedystanford@gmail.com Beran, Philip 1 Snyder, Richard 1 Patil, Mayuresh 2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH 45433, USA 2: bVirginia Polytechnic and State University, Blacksburg, VA 24061, USA; Source Info: Apr2013, Vol. 38, p238; Subject Term: ORNITHOPTERS; Subject Term: STRUCTURAL stability; Subject Term: NONLINEAR dynamical systems; Subject Term: DEFORMATIONS (Mechanics); Subject Term: AERODYNAMICS; Subject Term: KINEMATICS; Subject Term: EQUATIONS -- Numerical solutions; Author-Supplied Keyword: Aeroelastic tailoring; Author-Supplied Keyword: Flexible flapping wings; Author-Supplied Keyword: Flight dynamics; Author-Supplied Keyword: Floquet multipliers; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.jfluidstructs.2012.12.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85915006&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thibault, Louis AU - Avitabile, Peter AU - Foley, Jason AU - Wolfson, Janet T1 - Equivalent reduced model technique development for nonlinear system dynamic response JO - Mechanical Systems & Signal Processing JF - Mechanical Systems & Signal Processing Y1 - 2013/04// VL - 36 IS - 2 M3 - Article SP - 422 EP - 455 SN - 08883270 AB - Abstract: The dynamic response of structural systems commonly involves nonlinear effects. Often times, structural systems are made up of several components, whose individual behavior is essentially linear compared to the total assembled system. However, the assembly of linear components using highly nonlinear connection elements or contact regions causes the entire system to become nonlinear. Conventional transient nonlinear integration of the equations of motion can be extremely computationally intensive, especially when the finite element models describing the components are very large and detailed. In this work, the equivalent reduced model technique (ERMT) is developed to address complicated nonlinear contact problems. ERMT utilizes a highly accurate model reduction scheme, the System equivalent reduction expansion process (SEREP). Extremely reduced order models that provide dynamic characteristics of linear components, which are interconnected with highly nonlinear connection elements, are formulated with SEREP for the dynamic response evaluation using direct integration techniques. The full-space solution will be compared to the response obtained using drastically reduced models to make evident the usefulness of the technique for a variety of analytical cases. [Copyright &y& Elsevier] AB - Copyright of Mechanical Systems & Signal Processing is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR systems KW - STRUCTURAL analysis (Engineering) KW - COMPARATIVE studies KW - LINEAR systems KW - COMPUTER simulation KW - HARM reduction (Human behavior) KW - SYSTEMS theory KW - Forced nonlinear response KW - Linear components for nonlinear analysis KW - Modal analysis KW - Nonlinear analysis KW - Reduced order modeling N1 - Accession Number: 85744468; Thibault, Louis 1; Email Address: louishthibault@gmail.com Avitabile, Peter 1 Foley, Jason 2 Wolfson, Janet 2; Affiliation: 1: Structural Dynamics and Acoustic Systems Laboratory, University of Massachusetts Lowell, One University Avenue, Lowell, MA 01854, USA 2: Air Force Research Laboratory, Munitions Directorate, Fuzes Branch, Eglin Air Force Base, 306 W, Eglin Blvd., Bldg 432, Eglin AFB, FL 32542-5430, USA; Source Info: Apr2013, Vol. 36 Issue 2, p422; Subject Term: NONLINEAR systems; Subject Term: STRUCTURAL analysis (Engineering); Subject Term: COMPARATIVE studies; Subject Term: LINEAR systems; Subject Term: COMPUTER simulation; Subject Term: HARM reduction (Human behavior); Subject Term: SYSTEMS theory; Author-Supplied Keyword: Forced nonlinear response; Author-Supplied Keyword: Linear components for nonlinear analysis; Author-Supplied Keyword: Modal analysis; Author-Supplied Keyword: Nonlinear analysis; Author-Supplied Keyword: Reduced order modeling; Number of Pages: 34p; Document Type: Article L3 - 10.1016/j.ymssp.2012.07.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85744468&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eismann, Michael T. AU - LeMaster, Daniel A. T1 - Aerosol modulation transfer function model for passive long-range imaging over a nonuniform atmospheric path. JO - Optical Engineering JF - Optical Engineering Y1 - 2013/04// VL - 52 IS - 4 M3 - Article SP - 1 EP - 13 SN - 00913286 AB - An aerosol modulation transfer function (MTF) model is developed to assess the impact of aerosol scattering on passive long-range imaging sensors. The methodology extends from previous work to explicitly address imaging scenarios with a nonuniform distribution of scattering characteristics over the propagation path and incorporates the moderate resolution transfer code database of aerosol cross-section and phase function characteristics in order to provide an empirical foundation for realistic quantitative MTF assessments. The resulting model is compared with both predictions from a Monte-Carlo scattering simulation and a scene-derived MTF estimate from an empirical image, with reasonable agreement in both cases. Application to long-range imaging situations at both visible and infrared wavelengths indicates that the magnitude and functional form of the aerosol MTF differ significantly from other contributors to the composite system MTF. Furthermore, the image-quality impact is largely radiometric in the sense that the contrast reduction is approximately independent of spatial frequency, and image blur is practically negligible. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROSOLS (Sprays) -- Research KW - TRANSFER functions (Mathematics) KW - RESEARCH KW - CONTROL theory (Mathematics) KW - COMPOSITE materials -- Research KW - NUCLEAR activation analysis KW - adjacency effect KW - aerosol scattering KW - atmospheric modeling KW - modulation transfer function KW - remote sensing N1 - Accession Number: 92988693; Eismann, Michael T. 1; Email Address: michael.eismann@wpafb.af.mil LeMaster, Daniel A. 1; Affiliation: 1: Air Force Research Laboratory, 2241 Avionics Circle, Wright-Patterson AFB, Ohio 45433; Source Info: Apr2013, Vol. 52 Issue 4, p1; Subject Term: AEROSOLS (Sprays) -- Research; Subject Term: TRANSFER functions (Mathematics); Subject Term: RESEARCH; Subject Term: CONTROL theory (Mathematics); Subject Term: COMPOSITE materials -- Research; Subject Term: NUCLEAR activation analysis; Author-Supplied Keyword: adjacency effect; Author-Supplied Keyword: aerosol scattering; Author-Supplied Keyword: atmospheric modeling; Author-Supplied Keyword: modulation transfer function; Author-Supplied Keyword: remote sensing; Number of Pages: 13p; Document Type: Article L3 - 10.1117/1.OE.52.4.046201 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92988693&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Xiao, Zhiwei AU - Wu, Qiang AU - Luo, Sida AU - Zhang, Chuck AU - Baur, Jeffery AU - Justice, Ryan AU - Liu, Tao T1 - Shape Matters: A Gold Nanoparticle Enabled Shape Memory Polymer Triggered by Laser Irradiation. JO - Particle & Particle Systems Characterization JF - Particle & Particle Systems Characterization Y1 - 2013/04// VL - 30 IS - 4 M3 - Article SP - 338 EP - 345 SN - 09340866 AB - With incorporation of gold nanoparticles, i.e., nanorods (AuNR) and nanospheres (AuNS), into a polyurethane-based shape-memory polymer (SMP) EG-72D matrix, SMP nanocomposite films capable of being remotely triggered by low-power laser are fabricated and characterized using UV-vis-NIR spectroscopy, X-ray scattering, and dynamic mechanical analysis (DMA). It is demonstrated that, with incorporation of very low concentration of gold nanorods (≈0.1 wt%), the mechanically programmed EG-72D/AuNR nanocomposite presents rapid response to low power laser irradiation (785 nm, ≈10 mW). Comparative studies on the laser irradiation response of EG-72D/AuNS and EG-72D/AuNR nanocomposite films suggest that AuNRs have significantly higher photothermal conversion efficiency than AuNS and on-resonance laser irradiation, matching the wavelength of the incident laser with the longitudinal plasmon resonance of AuNR, is necessary to induce the fast response of gold nanoparticle enabled SMP nanocomposites. [ABSTRACT FROM AUTHOR] AB - Copyright of Particle & Particle Systems Characterization is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - gold nanoparticles KW - laser activation KW - nanocomposites KW - shape-memory polymers N1 - Accession Number: 87075376; Xiao, Zhiwei 1 Wu, Qiang 1 Luo, Sida 1 Zhang, Chuck 1 Baur, Jeffery 2 Justice, Ryan 2 Liu, Tao 1; Affiliation: 1: High-Performance Materials Institute, Florida State University 2: AFRL/RXBC, Air-Force Research Laboratory, Wright-Patterson Air Force Base; Source Info: Apr2013, Vol. 30 Issue 4, p338; Author-Supplied Keyword: gold nanoparticles; Author-Supplied Keyword: laser activation; Author-Supplied Keyword: nanocomposites; Author-Supplied Keyword: shape-memory polymers; Number of Pages: 6p; Document Type: Article L3 - 10.1002/ppsc.201200088 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87075376&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vincelette, Rebecca L. AU - Roth, Caleb C. AU - McConnell, Maureen P. AU - Payne, Jason A. AU - Beier, Hope T. AU - Ibey, Bennett L. T1 - Thresholds for Phosphatidylserine Externalization in Chinese Hamster Ovarian Cells following Exposure to Nanosecond Pulsed Electrical Fields (nsPEF). JO - PLoS ONE JF - PLoS ONE Y1 - 2013/04// VL - 8 IS - 4 M3 - Article SP - 1 EP - 12 PB - Public Library of Science SN - 19326203 AB - High-amplitude, MV/m, nanosecond pulsed electric fields (nsPEF) have been hypothesized to cause nanoporation of the plasma membrane. Phosphatidylserine (PS) externalization has been observed on the outer leaflet of the membrane shortly after nsPEF exposure, suggesting local structural changes in the membrane. In this study, we utilized fluorescently-tagged Annexin V to observe the externalization of PS on the plasma membrane of isolated Chinese Hamster Ovary (CHO) cells following exposure to nsPEF. A series of experiments were performed to determine the dosimetric trends of PS expression caused by nsPEF as a function of pulse duration, τ, delivered field strength, ED, and pulse number, n. To accurately estimate dose thresholds for cellular response, data were reduced to a set of binary responses and ED50s were estimated using Probit analysis. Probit analysis results revealed that PS externalization followed the non-linear trend of (τ*ED2)−1 for high amplitudes, but failed to predict low amplitude responses. A second set of experiments was performed to determine the nsPEF parameters necessary to cause observable calcium uptake, using cells preloaded with calcium green (CaGr), and membrane permeability, using FM1-43 dye. Calcium influx and FM1-43 uptake were found to always be observed at lower nsPEF exposure parameters compared to PS externalization. These findings suggest that multiple, higher amplitude and longer pulse exposures may generate pores of larger diameter enabling lateral diffusion of PS; whereas, smaller pores induced by fewer, lower amplitude and short pulse width exposures may only allow extracellular calcium and FM1-43 uptake. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOSPHATIDYLSERINES KW - CELL membranes KW - CELL lines KW - ELECTRIC fields -- Physiological effect KW - OVARIES -- Physiology KW - LIPOCORTINS KW - HAMSTERS as laboratory animals KW - CELLULAR signal transduction KW - CHINA KW - Biochemistry KW - Biology KW - Biophysics KW - Cell membrane KW - Cellular structures KW - Computational biology KW - Cytochemistry KW - Electric field KW - Electrical discharges KW - Electricity KW - Lipid structure KW - Lipids KW - Macromolecular structure analysis KW - Membrane characteristics KW - Membrane composition KW - Membrane structures KW - Molecular cell biology KW - Physics KW - Radiation biophysics KW - Research Article KW - Signal transduction KW - Signaling in cellular processes KW - Transmembrane signaling N1 - Accession Number: 87679403; Vincelette, Rebecca L. 1 Roth, Caleb C. 2 McConnell, Maureen P. 3 Payne, Jason A. 3 Beier, Hope T. 1 Ibey, Bennett L. 3; Email Address: BennettIbey@gmail.com; Affiliation: 1: 1 National Research Council, Fort Sam Houston, Texas, United States of America 2: 2 Department of Radiological Sciences, University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States of America 3: 3 Air Force Research Laboratory, Radio Frequency Bioeffects Branch, Fort Sam Houston, Texas, United States of America; Source Info: Apr2013, Vol. 8 Issue 4, p1; Subject Term: PHOSPHATIDYLSERINES; Subject Term: CELL membranes; Subject Term: CELL lines; Subject Term: ELECTRIC fields -- Physiological effect; Subject Term: OVARIES -- Physiology; Subject Term: LIPOCORTINS; Subject Term: HAMSTERS as laboratory animals; Subject Term: CELLULAR signal transduction; Subject Term: CHINA; Author-Supplied Keyword: Biochemistry; Author-Supplied Keyword: Biology; Author-Supplied Keyword: Biophysics; Author-Supplied Keyword: Cell membrane; Author-Supplied Keyword: Cellular structures; Author-Supplied Keyword: Computational biology; Author-Supplied Keyword: Cytochemistry; Author-Supplied Keyword: Electric field; Author-Supplied Keyword: Electrical discharges; Author-Supplied Keyword: Electricity; Author-Supplied Keyword: Lipid structure; Author-Supplied Keyword: Lipids; Author-Supplied Keyword: Macromolecular structure analysis; Author-Supplied Keyword: Membrane characteristics; Author-Supplied Keyword: Membrane composition; Author-Supplied Keyword: Membrane structures; Author-Supplied Keyword: Molecular cell biology; Author-Supplied Keyword: Physics; Author-Supplied Keyword: Radiation biophysics; Author-Supplied Keyword: Research Article; Author-Supplied Keyword: Signal transduction; Author-Supplied Keyword: Signaling in cellular processes; Author-Supplied Keyword: Transmembrane signaling; Number of Pages: 12p; Document Type: Article L3 - 10.1371/journal.pone.0063122 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87679403&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Perry, Marcus B. AU - Mercado, Gary R. AU - Simpson, James R. T1 - On the Analysis of Balanced Two-Level Factorial Whole-Plot Saturated Split-Plot Designs. JO - Quality & Reliability Engineering International JF - Quality & Reliability Engineering International Y1 - 2013/04// VL - 29 IS - 3 M3 - Article SP - 327 EP - 343 SN - 07488017 AB - This paper considers an experimentation strategy when resource constraints permit only a single design replicate per time interval and one or more design variables are hard to change. The experimental designs considered are two-level full-factorial or fractional-factorial designs run as balanced split plots. These designs are common in practice and appropriate for fitting a main-effects-plus-interactions model, while minimizing the number of times the whole-plot treatment combination is changed. Depending on the postulated model, single replicates of these designs can result in the inability to estimate error at the whole-plot level, suggesting that formal statistical hypothesis testing on the whole-plot effects is not possible. We refer to these designs as balanced two-level whole-plot saturated split-plot designs. In this paper, we show that, for these designs, it is appropriate to use ordinary least squares to analyze the subplot factor effects at the 'intermittent' stage of the experiments (i.e., after a single design replicate is run); however, formal inference on the whole-plot effects may or may not be possible at this point. We exploit the sensitivity of ordinary least squares in detecting whole-plot effects in a split-plot design and propose a data-based strategy for determining whether to run an additional replicate following the intermittent analysis or whether to simply reduce the model at the whole-plot level to facilitate testing. The performance of the proposed strategy is assessed using Monte Carlo simulation. The method is then illustrated using wind tunnel test data obtained from a NASCAR Winston Cup Chevrolet Monte Carlo stock car. Copyright © 2012 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR] AB - Copyright of Quality & Reliability Engineering International is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FACTORIAL experiment designs KW - EXPERIMENTAL design KW - MONTE Carlo method KW - STATISTICAL hypothesis testing KW - DISTRIBUTION (Probability theory) KW - design of experiments KW - limited resources KW - randomization restrictions KW - split-plot design N1 - Accession Number: 86178479; Perry, Marcus B. 1 Mercado, Gary R. 1 Simpson, James R. 2; Affiliation: 1: Department of Information Systems, Statistics, and Management Science, The University of Alabama 2: Group OA, 53rd Test Management Group, United States Air Force; Source Info: Apr2013, Vol. 29 Issue 3, p327; Subject Term: FACTORIAL experiment designs; Subject Term: EXPERIMENTAL design; Subject Term: MONTE Carlo method; Subject Term: STATISTICAL hypothesis testing; Subject Term: DISTRIBUTION (Probability theory); Author-Supplied Keyword: design of experiments; Author-Supplied Keyword: limited resources; Author-Supplied Keyword: randomization restrictions; Author-Supplied Keyword: split-plot design; Number of Pages: 17p; Illustrations: 2 Color Photographs, 1 Diagram, 13 Charts, 2 Graphs; Document Type: Article L3 - 10.1002/qre.1384 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86178479&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Domonkos, M. T. AU - Amdahl, D. AU - Camacho, J. F. AU - Coffey, S. K. AU - Degnan, J. H. AU - Delaney, R. AU - Frese, M. AU - Gale, D. AU - Grabowski, T. C. AU - Gribble, R. AU - Intrator, T. P. AU - McCullough, J. AU - Montano, N. AU - Robinson, P. R. AU - Wurden, G. T1 - Applied magnetic field design for the field reversed configuration compression heating experiment. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2013/04// VL - 84 IS - 4 M3 - Article SP - 043507 EP - 043507-7 PB - American Institute of Physics SN - 00346748 AB - Detailed calculations of the formation, guide, and mirror applied magnetic fields in the FRC compression-heating experiment (FRCHX) were conducted using a commercially available generalized finite element solver, COMSOL Multiphysics®. In FRCHX, an applied magnetic field forms, translates, and finally captures the FRC in the liner region sufficiently long to enable compression. Large single turn coils generate the fast magnetic fields necessary for FRC formation. Solenoidal coils produce the magnetic field for translation and capture of the FRC prior to liner implosion. Due to the limited FRC lifetime, liner implosion is initiated before the FRC is injected, and the magnetic flux that diffuses into the liner is compressed. Two-dimensional axisymmetric magnetohydrodynamic simulations using MACH2 were used to specify optimal magnetic field characteristics, and this paper describes the simulations conducted to design magnetic field coils and compression hardware for FRCHX. This paper presents the vacuum solution for the magnetic field. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC fields KW - REVERSED field pinches KW - ADIABATIC compression heating KW - EXPERIMENTAL design KW - FINITE element method KW - MAGNETOHYDRODYNAMICS KW - COMPUTER simulation N1 - Accession Number: 87372397; Domonkos, M. T. 1 Amdahl, D. 1 Camacho, J. F. 2 Coffey, S. K. 2 Degnan, J. H. 1 Delaney, R. 1 Frese, M. 2 Gale, D. 3 Grabowski, T. C. 1 Gribble, R. 4 Intrator, T. P. 4 McCullough, J. 3 Montano, N. 3 Robinson, P. R. 1 Wurden, G. 4; Affiliation: 1: Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico 87117, 2: NumerEx LLC, Albuquerque, New Mexico 87106, 3: SAIC, Albuquerque, New Mexico 87106, 4: Los Alamos National Laboratory, Los Alamos, New Mexico 87545,; Source Info: Apr2013, Vol. 84 Issue 4, p043507; Subject Term: MAGNETIC fields; Subject Term: REVERSED field pinches; Subject Term: ADIABATIC compression heating; Subject Term: EXPERIMENTAL design; Subject Term: FINITE element method; Subject Term: MAGNETOHYDRODYNAMICS; Subject Term: COMPUTER simulation; Number of Pages: 1p; Illustrations: 2 Color Photographs, 2 Diagrams, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1063/1.4801952 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87372397&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mahalingam, Krishnamurthy AU - Haugan, Heather J. AU - Brown, Gail J. AU - Eyink, Kurt G. T1 - Quantitative analysis of interfacial strain in InAs/GaSb superlattices by aberration-corrected HRTEM and HAADF-STEM JO - Ultramicroscopy JF - Ultramicroscopy Y1 - 2013/04// VL - 127 M3 - Article SP - 70 EP - 75 SN - 03043991 AB - Abstract: The strain distribution across interfaces in InAs/GaSb superlattices grown on (100)-GaSb substrates is investigated by aberration corrected transmission electron microscopy. Atomic resolution images of interfaces were obtained by conventional high resolution transmission electron microscopy (HRTEM), using the negative spherical-aberration imaging mode, and by scanning transmission electron microscopy (STEM), using the high-angle annular dark-field (HAADF) imaging mode. The local atomic displacements across interfaces were determined from these images using the peak pair algorithm, from which strain maps were calculated with respect to a reference lattice extracted from the GaSb substrate region. Both techniques yield consistent results, which reveal that the InAs-on-GaSb interface is nearly strain balanced, whereas the GaSb-on-InAs interface is in tensile strain, indicating that the prevalent bond type at this interface is Ga–As. In addition, the GaSb layers in the superlattice are compressively strained indicating the incorporation of In into these layers. Further analysis of the HAADF-STEM images indicates an estimated 4% In content in the GaSb layers and that the GaSb-on-InAs interface contributes to about 27% of the overall superlattice strain. The strain measurements in the InAs layers are in good agreement with the theoretical values determined from elastic constants. Furthermore, the overall superlattice strain determined from this analysis is also in good agreement with the measurements determined by high-resolution X-ray diffraction. [Copyright &y& Elsevier] AB - Copyright of Ultramicroscopy is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - GALLIUM compounds KW - TRANSMISSION electron microscopy KW - SUPERLATTICES KW - CRYSTAL growth KW - SUBSTRATES (Materials science) KW - High-resolution transmission electron microscopy (HRTEM) KW - InAs/GaSb KW - Interfaces KW - Scanning transmission electron microscopy (STEM) KW - Strain Mapping KW - superlattices N1 - Accession Number: 86465335; Mahalingam, Krishnamurthy; Email Address: Krishnamurthy.Mahalingam.ctr@wpafb.af.mil Haugan, Heather J. 1 Brown, Gail J. 1 Eyink, Kurt G. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7707, United States; Source Info: Apr2013, Vol. 127, p70; Subject Term: STRAINS & stresses (Mechanics); Subject Term: GALLIUM compounds; Subject Term: TRANSMISSION electron microscopy; Subject Term: SUPERLATTICES; Subject Term: CRYSTAL growth; Subject Term: SUBSTRATES (Materials science); Author-Supplied Keyword: High-resolution transmission electron microscopy (HRTEM); Author-Supplied Keyword: InAs/GaSb; Author-Supplied Keyword: Interfaces; Author-Supplied Keyword: Scanning transmission electron microscopy (STEM); Author-Supplied Keyword: Strain Mapping; Author-Supplied Keyword: superlattices; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.ultramic.2012.09.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86465335&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roslyak, O. AU - Gumbs, Godfrey AU - Huang, Danhong T1 - Gap-modulated doping effects on indirect exchange interaction between magnetic impurities in graphene. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/03/28/ VL - 113 IS - 12 M3 - Article SP - 123702 PB - American Institute of Physics SN - 00218979 AB - A dilute distribution of magnetic impurities is assumed to be present in doped graphene. We calculate the interaction energy between two magnetic impurities which are coupled via the indirect-exchange or Ruderman-Kittel-Kasuva-Yosida (RKKY) interaction by the doped conduction electrons. The current model is a half-filled AB-lattice structure. Our calculations are based on the retarded lattice Green's function formalism in momentum-energy space which is employed in linear response theory to determine the magnetic susceptibility in coordinate space. Analytic results are obtained for gapped graphene when the magnetic impurities are placed on the A and B sublattice sites of the structure. This interaction, which is important in determining spin ordering, has been found to be significantly different for AA and BB exchange energies in doped graphene due to the existence of an energy gap and is attributed to a consequence of the local fields not being equal on the A and B sublattices. For doped graphene, the oscillations of all three RKKY interactions from ferromagnetic to antiferromagnetic with increasing Fermi energy is significantly modified by the energy gap both in magnitude and phase. Additionally, the AB exchange energy may be modified by the presence of a gap for undoped graphene but not for doped graphene due to the dominance of doped conduction electrons. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERMEDIATES (Chemistry) KW - PARTICLES (Nuclear physics) KW - PHOTOCONDUCTIVITY KW - FLUCTUATIONS (Physics) KW - MAGNETIC susceptibility N1 - Accession Number: 86447224; Roslyak, O. 1 Gumbs, Godfrey 1 Huang, Danhong 2; Affiliation: 1: Department of Physics and Astronomy, Hunter College, City University of New York, 695 Park Avenue, New York 10065, 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117,; Source Info: Mar2013, Vol. 113 Issue 12, p123702; Subject Term: INTERMEDIATES (Chemistry); Subject Term: PARTICLES (Nuclear physics); Subject Term: PHOTOCONDUCTIVITY; Subject Term: FLUCTUATIONS (Physics); Subject Term: MAGNETIC susceptibility; Number of Pages: 7p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.4795624 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86447224&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - MacIntosh, Victor H. AU - Tastad, Katie J. AU - Eick-Cost, Angelia A. T1 - Mid-season influenza vaccine effectiveness 2011–2012: A Department of Defense Global, Laboratory-based, Influenza Surveillance System case–control study estimate JO - Vaccine JF - Vaccine Y1 - 2013/03/25/ VL - 31 IS - 13 M3 - Article SP - 1651 EP - 1655 SN - 0264410X AB - Abstract: Mid-season influenza vaccine effectiveness (VE) was estimated using data from surveillance conducted by the Department of Defense Global, Laboratory-based, Influenza Surveillance Program at the United States Air Force School of Aerospace Medicine. Respiratory specimens from geographically diverse military members and dependents who sought medical care 2 October 2011–3 March 2012 were analyzed by viral culture and real-time reverse transcriptase-polymerase chain reaction; influenza viruses were typed and sequenced. Controls were influenza test-negative. Overall, vaccine type and subtype-specific VE were estimated using logistic regression. Adjusted VE (95% confidence interval) was: overall 77 (57–87)%; live attenuated vaccine (LAIV) 74 (48–87)%; trivalent inactivated vaccine (TIV) 75 (48–88)%. H3 component-specific VE was: overall 77 (52–89)%; LAIV 78 (47–91)%; TIV 74 (38–89)%; data were insufficient for separate H1 and B estimates. Both vaccine types showed moderate to high VE, indicating significant protection against circulating influenza strains. [Copyright &y& Elsevier] AB - Copyright of Vaccine is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFLUENZA -- Vaccination KW - DRUGS -- Effectiveness KW - HEALTH surveys KW - MILITARY medicine KW - MEDICAL geography KW - REVERSE transcriptase polymerase chain reaction KW - LOGISTIC regression analysis KW - Influenza KW - Military KW - United States KW - Vaccine effectiveness KW - UNITED States. Dept. of Defense N1 - Accession Number: 86156709; MacIntosh, Victor H. 1; Email Address: Victor.MacIntosh@us.af.mil Tastad, Katie J. 1,2; Email Address: Katie.Tastad@wpafb.af.mil Eick-Cost, Angelia A. 2,3; Affiliation: 1: United States Air Force School of Aerospace Medicine, 2510 5th Street, Wright-Patterson Air Force Base, OH 45433, United States 2: Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., 6720A Rockledge Drive, Suite 100, Bethesda, MD 20817, United States 3: Armed Forces Health Surveillance Center, 503 Robert Grant Avenue, Silver Spring, MD 20910, United States; Source Info: Mar2013, Vol. 31 Issue 13, p1651; Subject Term: INFLUENZA -- Vaccination; Subject Term: DRUGS -- Effectiveness; Subject Term: HEALTH surveys; Subject Term: MILITARY medicine; Subject Term: MEDICAL geography; Subject Term: REVERSE transcriptase polymerase chain reaction; Subject Term: LOGISTIC regression analysis; Author-Supplied Keyword: Influenza; Author-Supplied Keyword: Military; Author-Supplied Keyword: United States; Author-Supplied Keyword: Vaccine effectiveness; Company/Entity: UNITED States. Dept. of Defense; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.vaccine.2013.01.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86156709&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Afrooz, A.R.M. Nabiul AU - Sivalapalan, Sean T. AU - Murphy, Catherine J. AU - Hussain, Saber M. AU - Schlager, John J. AU - Saleh, Navid B. T1 - Spheres vs. rods: The shape of gold nanoparticles influences aggregation and deposition behavior JO - Chemosphere JF - Chemosphere Y1 - 2013/03/22/ VL - 91 IS - 1 M3 - Article SP - 93 EP - 98 SN - 00456535 AB - Abstract: The influence of shape on nanomaterial aggregation and deposition was systematically studied with poly-acrylic acid (PAA) coated uniform-sized gold nanospheres (AuNSs) and nanorods (AuNRs). Time resolved dynamic light scattering was employed to study their aggregation kinetics in a wide range of mono- and di-valent electrolyte conditions. Results indicated that PAA coated AuNSs have higher aggregation propensity compared to anisotropic PAA coated AuNRs, as observed through critical coagulation concentration (CCC). The CCC values were estimated as 50mM NaCl and 1.8mM CaCl2 for AuNS, which showed substantial increase to 250mM NaCl and 7mM CaCl2 for anisotropic AuNRs. Though electrokinetic behavior showed similar surface potential for the spherical and rod-shaped materials, the geometric differences between the samples have likely resulted in unique conformation of the PAA coatings, leading to different magnitudes of steric hindrances and hence yielding the observed aggregation behavior. The deposition kinetics was monitored using the quartz crystal microbalance with dissipation technique. AuNRs showed relatively slower deposition compared to AuNSs for low electrolytes concentrations. With the increase in electrolyte concentration, the differences in deposition rates between spheres and rods diminished. The results from this study showed that the shape of nanomaterials can influence interfacial properties and result in unique aggregation and deposition behavior under typical aquatic conditions. [Copyright &y& Elsevier] AB - Copyright of Chemosphere is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GOLD nanoparticles KW - CLUSTERING of particles KW - CHEMICAL vapor deposition KW - PARTICLE size distribution KW - POLYACRYLIC acid KW - MOLECULAR dynamics KW - Aggregation KW - Deposition KW - Gold nanorods KW - Gold nanospheres KW - Poly(acrylic acid) KW - Shape N1 - Accession Number: 85617179; Afrooz, A.R.M. Nabiul 1 Sivalapalan, Sean T. 2 Murphy, Catherine J. 2 Hussain, Saber M. 3 Schlager, John J. 4 Saleh, Navid B. 1; Email Address: salehn@engr.sc.edu; Affiliation: 1: Department of Civil and Environmental Engineering, University of South Carolina, Columbia, SC 29208, USA 2: Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA 3: Human Effectiveness Directorate, 711 Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH 45431, USA 4: Molecular Bioeffects Branch, 711 Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH 45431, USA; Source Info: Mar2013, Vol. 91 Issue 1, p93; Subject Term: GOLD nanoparticles; Subject Term: CLUSTERING of particles; Subject Term: CHEMICAL vapor deposition; Subject Term: PARTICLE size distribution; Subject Term: POLYACRYLIC acid; Subject Term: MOLECULAR dynamics; Author-Supplied Keyword: Aggregation; Author-Supplied Keyword: Deposition; Author-Supplied Keyword: Gold nanorods; Author-Supplied Keyword: Gold nanospheres; Author-Supplied Keyword: Poly(acrylic acid); Author-Supplied Keyword: Shape; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.chemosphere.2012.11.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85617179&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Avrutsky, I. AU - Gibson, R. AU - Sears, J. AU - Khitrova, G. AU - Gibbs, H. M. AU - Hendrickson, J. T1 - Linear systems approach to describing and classifying Fano resonances. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2013/03/22/ VL - 87 IS - 12 M3 - Article SP - 125118-1 EP - 125118-6 SN - 10980121 AB - We show that a generalized asymmetric resonant line shape derived elsewhere from rigorous electromagnetic calculations [ Gallinet and Martin Phys. Rev. B 83 235427 (2011)] and from the two- oscillators model [ Joe et al. Phys. Scr. 74 259 (2006)] can also be obtained using a very general assumption that the spectral dependence of the scattering amplitudes is given by the transfer function of a linear system. We reformulate the line shape equation and show that in the case of a first-order transfer function all possible line shapes can be presented by a weighted sum of the original Fano and Lorentzian line shapes. We propose a new two-parameter classification scheme for asymmetric resonances with one parameter δ being the asymmetry factor of the Fano component and the other parameter η quantifying the relative weight of the Fano and Lorentzian components of the line shape. The proposed formula is used to fit experimental spectra of a silicon photonic crystal cavity nanobeam interrogated using a fiber taper probe. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LINEAR systems KW - LORENTZ force KW - RYDBERG states KW - ELECTROMAGNETISM -- Mathematics KW - TRANSFER functions (Mathematics) KW - LIGHT -- Scattering N1 - Accession Number: 87337609; Avrutsky, I. 1,2 Gibson, R. 1,3 Sears, J. 3 Khitrova, G. 3 Gibbs, H. M. 3 Hendrickson, J. 1; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Department of Electrical and Computer Engineering, Wayne State University, 5050 Anthony Wayne Drive, Detroit, Michigan 48202, USA 3: College of Optical Sciences, University of Arizona, 1630 E University Blvd., Tucson, Arizona 85721, USA; Source Info: Mar2013, Vol. 87 Issue 12, p125118-1; Subject Term: LINEAR systems; Subject Term: LORENTZ force; Subject Term: RYDBERG states; Subject Term: ELECTROMAGNETISM -- Mathematics; Subject Term: TRANSFER functions (Mathematics); Subject Term: LIGHT -- Scattering; Number of Pages: 6p; Document Type: Article L3 - 10.1103/PhysRevB.87.125118 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87337609&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Paduano, Qing S. AU - Weyburne, David W. AU - Tomich, David H. T1 - Growth and properties of m-plane GaN on m-plane sapphire by metalorganic chemical vapor deposition JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2013/03/15/ VL - 367 M3 - Article SP - 104 EP - 109 SN - 00220248 AB - Abstract: A characterization study of heteroepitaxial grown m-plane GaN on m-plane sapphire substrates by MOCVD was undertaken. Using X-ray diffraction and photoluminescence, the growth characteristics and epi-layer properties of m-GaN layers were investigated with special emphasis on the role of AlN buffer layers in preventing unintentional nitridation prior to GaN deposition. Substrate nitridation was found to lead to undesirable crystallographic orientations. In-plane lattice parameters of m-GaN obtained from X-ray reciprocal space mapping indicate anisotropic residual strain is present in these layers even under optimized growth conditions. Compressive and tensile strains were observed along either [0001] or [112̄0] directions, depending on AlN buffer layer conditions and the presence of extended structural defects. In addition, extended structural defects commonly observed in GaN showed a significant effect on stacking fault related luminescence in m-GaN. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL growth KW - GALLIUM nitride KW - SAPPHIRES KW - METAL organic chemical vapor deposition KW - SUBSTRATES (Materials science) KW - X-ray diffraction KW - A1. Defects KW - A1. X-ray diffraction KW - A3. Metalorganic chemical vapor deposition KW - B1. Nitrides N1 - Accession Number: 85855200; Paduano, Qing S.; Email Address: qing.paduano@us.af.mil Weyburne, David W. 1 Tomich, David H. 1; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Mar2013, Vol. 367, p104; Subject Term: CRYSTAL growth; Subject Term: GALLIUM nitride; Subject Term: SAPPHIRES; Subject Term: METAL organic chemical vapor deposition; Subject Term: SUBSTRATES (Materials science); Subject Term: X-ray diffraction; Author-Supplied Keyword: A1. Defects; Author-Supplied Keyword: A1. X-ray diffraction; Author-Supplied Keyword: A3. Metalorganic chemical vapor deposition; Author-Supplied Keyword: B1. Nitrides; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jcrysgro.2012.12.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85855200&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zolot, A.M. AU - Giorgetta, F.R. AU - Baumann, E. AU - Swann, W.C. AU - Coddington, I. AU - Newbury, N.R. T1 - Broad-band frequency references in the near-infrared: Accurate dual comb spectroscopy of methane and acetylene JO - Journal of Quantitative Spectroscopy & Radiative Transfer JF - Journal of Quantitative Spectroscopy & Radiative Transfer Y1 - 2013/03/15/ VL - 118 M3 - Article SP - 26 EP - 39 SN - 00224073 AB - Abstract: The Doppler-limited spectra of methane between 176THz and 184THz (5870–6130cm−1) and acetylene between 193THz and 199THz (6430–6630cm−1) are acquired via comb-tooth resolved dual comb spectroscopy with frequency accuracy traceable to atomic standards. A least squares analysis of the measured absorbance and phase line shapes provides line center frequencies with absolute accuracy of 0.2MHz, or less than one thousandth of the room temperature Doppler width. This accuracy is verified through comparison with previous saturated absorption spectroscopy of 37 strong isolated lines of acetylene. For the methane spectrum, the center frequencies of 46 well-isolated strong lines are determined with similar high accuracy, along with the center frequencies for 1107 non-isolated lines at lower accuracy. The measured methane line-center frequencies have an uncertainty comparable to the few available laser heterodyne measurements in this region but span a much larger optical bandwidth, marking the first broad-band measurements of the methane 2ν3 region directly referenced to atomic frequency standards. This study demonstrates the promise of dual comb spectroscopy to obtain high resolution broadband spectra that are comparable to state-of-the-art Fourier-transform spectrometer measurements but with much improved frequency accuracy. Work of the US government, not subject to US copyright. [Copyright &y& Elsevier] AB - Copyright of Journal of Quantitative Spectroscopy & Radiative Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEAR infrared radiation KW - METHANE KW - ACETYLENE KW - LEAST squares KW - ATOMIC absorption spectroscopy KW - FOURIER transform spectrometers KW - COMPARATIVE studies KW - Acetylene KW - Frequency comb KW - Methane KW - Spectroscopy N1 - Accession Number: 85855736; Zolot, A.M. 1,2 Giorgetta, F.R. 1 Baumann, E. 1 Swann, W.C. 1 Coddington, I. 1 Newbury, N.R. 1; Email Address: nathan.newbury@nist.gov; Affiliation: 1: National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305, United States 2: Air Force Research Laboratory, Kirtland AFB, NM 87117, United States; Source Info: Mar2013, Vol. 118, p26; Subject Term: NEAR infrared radiation; Subject Term: METHANE; Subject Term: ACETYLENE; Subject Term: LEAST squares; Subject Term: ATOMIC absorption spectroscopy; Subject Term: FOURIER transform spectrometers; Subject Term: COMPARATIVE studies; Author-Supplied Keyword: Acetylene; Author-Supplied Keyword: Frequency comb; Author-Supplied Keyword: Methane; Author-Supplied Keyword: Spectroscopy; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.jqsrt.2012.11.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85855736&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cornelia, Barry M. AU - Gimelshein, Sergey F. AU - Lilly, Taylor C. AU - Ketsdever, Andrew D. T1 - Narrowband coherent Rayleigh-Brillouin scattering from gases confined by a high-intensity optical lattice. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2013/03/15/ VL - 87 IS - 3-B M3 - Article SP - 1 EP - 6 SN - 10502947 AB - Molecular nitrogen at 0.8 atm and 300 and 500 K and methane at 0.8 atm and 300 K were subjected to optical lattices formed by narrow-band 532-nm laser pulses with intensities on the optical axis near, but below, the gas ionization limit. A third pulse was introduced to experimentally probe the response, as a function of the lattice velocity, of the gas to the deep monochromatic potential wells formed by the lasers. Coherent Rayleigh-Brillouin scattering (CRBS) line shapes were recorded and compared to numerically predicted magnitudes of the density perturbations induced in the gas. Both experimental results and those from direct simulation Monte Carlo simulations show a deviation from previously published low-intensity CRBS line-shape models. The deviation indicates a trend, as a function of lattice velocity, similar to that relating to previously published energy and momentum transfer calculations for high-intensity lattices. Furthermore, the deviation indicates a maximum intensity at which current CRBS theory is valid. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENERGY bands KW - COHERENCE (Optics) KW - RAYLEIGH scattering KW - GASES KW - OPTICAL lattices KW - NITROGEN KW - MONOCHROMATIC light KW - LASER pulses N1 - Accession Number: 87095846; Cornelia, Barry M. 1 Gimelshein, Sergey F. 1 Lilly, Taylor C. 2 Ketsdever, Andrew D. 3; Affiliation: 1: ERC Inc., Edwards AFB, California 93524, USA 2: Department of Mechanical and Aerospace Engineering, University of Colorado Colorado Springs, Colorado Springs, Colorado 80918, USA 3: Air Force Research Laboratory, Edwards AFB, California 93524, USA; Source Info: Mar2013, Vol. 87 Issue 3-B, p1; Subject Term: ENERGY bands; Subject Term: COHERENCE (Optics); Subject Term: RAYLEIGH scattering; Subject Term: GASES; Subject Term: OPTICAL lattices; Subject Term: NITROGEN; Subject Term: MONOCHROMATIC light; Subject Term: LASER pulses; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1103/PhysRevA.87.033825 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87095846&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Greilich, A. AU - Bădescu, Ş. C. AU - Kim, D. AU - Bracker, A. S. AU - Gammon, D. T1 - Optical Measurement and Modeling of Interactions between Two Hole Spins or Two Electron Spins in Coupled InAs Quantum Dots. JO - Physical Review Letters JF - Physical Review Letters Y1 - 2013/03/15/ VL - 110 IS - 11 M3 - Article SP - 117402-1 EP - 117402-5 SN - 00319007 AB - Two electron spins in quantum dots coupled through coherent tunneling are generally acknowledged to approximately obey Heisenberg isotropic exchange. This has not been established for two holes. Here we measure the spectra of two holes and of two electrons in two vertically stacked self-assembled InAs quantum dots using optical spectroscopy as a function of electric and magnetic fields. We find that the exchange is approximately isotropic for both systems, but that significant asymmetric contributions, arising from spin-orbit and Zeeman interactions combined with spatial asymmetries, are required to explain large anticrossings and fine-structure energy splittings in the spectra. Asymmetric contributions to the isotropic Hamiltonian for electrons are of the order of a few percent while those for holes are an order of magnitude larger. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review Letters is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON spin KW - RESEARCH KW - SPIN-polarized currents KW - TWO-electron atoms KW - QUANTUM dots KW - QUANTUM electronics -- Research N1 - Accession Number: 86719443; Greilich, A. 1,2 Bădescu, Ş. C. 1,3 Kim, D. 1,4 Bracker, A. S. 1 Gammon, D. 1; Affiliation: 1: Naval Research Laboratory, Washington, DC 20375, USA 2: Technische Universität Dortmund, 44221 Dortmund, Germany 3: US Air Force Research Laboratory, Dayton, Ohio 45433, USA 4: Harvard University, Cambridge, Massachusetts 02138, USA; Source Info: 3/15/2013, Vol. 110 Issue 11, p117402-1; Subject Term: ELECTRON spin; Subject Term: RESEARCH; Subject Term: SPIN-polarized currents; Subject Term: TWO-electron atoms; Subject Term: QUANTUM dots; Subject Term: QUANTUM electronics -- Research; Number of Pages: 5p; Document Type: Article L3 - 10.1103/PhysRevLett.110.117402 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86719443&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Ying-Sing AU - Vecchio, Nicolas E. AU - Lu, Weijie T1 - Infrared and Raman spectra of (3,3,3-trifluoropropyl)trimethoxysilane, its sol and xerogel JO - Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy JF - Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy Y1 - 2013/03/15/ VL - 105 M3 - Article SP - 213 EP - 217 SN - 13861425 AB - Abstract: Organic modified silica sol was prepared by using (3,3,3-trifluoropropyl)trimethoxysilane (TFPTMS) as a precursor in ethanol solution under acidic condition. Infrared and Raman spectra were recorded for the silane coupling agent (SCA), TFPTMS sol and xerogel. Vibrational assignments have been suggested based on the spectral relative intensity, results from the vibrational study of trimethoxypropylsilane (TMPS), similar trifluorocompounds and group frequencies. Low temperature IR spectra revealed the presence of two conformers in TFPTMS. Only one conformer could be identified in the TFPTMS sol and xerogel. Thermal investigation of TFPTMS xerogel with infrared spectroscopic method indicated that the organic part remained essentially unchanged at or below 350°C but decomposed at or around 450°C, in agreement with the result from thermal gravimetric analysis (TGA). After the decomposition of the organic branch, the remaining part of the xerogel was composed of silica. [Copyright &y& Elsevier] AB - Copyright of Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILANE compounds KW - XEROGELS KW - INFRARED spectroscopy KW - RAMAN effect KW - COUPLING agents (Chemistry) KW - THERMOGRAVIMETRY KW - (3,3,3-Trifluopropyl)trimethoxysilane KW - Infrared spectra KW - Organomodified silica sol KW - Raman spectra KW - Xerogel N1 - Accession Number: 85617072; Li, Ying-Sing 1; Email Address: yingli@memphis.edu Vecchio, Nicolas E. 1 Lu, Weijie 2; Affiliation: 1: Department of Chemistry, University of Memphis, Memphis, TN 38152, USA 2: Materials and Manufacturing Directorate, AFRL/RXAN, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Mar2013, Vol. 105, p213; Subject Term: SILANE compounds; Subject Term: XEROGELS; Subject Term: INFRARED spectroscopy; Subject Term: RAMAN effect; Subject Term: COUPLING agents (Chemistry); Subject Term: THERMOGRAVIMETRY; Author-Supplied Keyword: (3,3,3-Trifluopropyl)trimethoxysilane; Author-Supplied Keyword: Infrared spectra; Author-Supplied Keyword: Organomodified silica sol; Author-Supplied Keyword: Raman spectra; Author-Supplied Keyword: Xerogel; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.saa.2012.12.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85617072&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lovett, Dennis P. AU - Yanes, Enrique G. AU - Herbelin, Travis W. AU - Knoerzer, Timm A. AU - Levisky, Joseph A. T1 - Structure elucidation and identification of a common metabolite for naphthoylindole-based synthetic cannabinoids using LC-TOF and comparison to a synthetic reference standard. JO - Forensic Science International JF - Forensic Science International Y1 - 2013/03/10/ VL - 226 IS - 1-3 M3 - Article SP - 81 EP - 87 SN - 03790738 AB - The identification of a predominate metabolite found in urine specimens which test positive for naphthoylindole-based synthetic cannabinoids is reported. The presence of this new metabolite was detected at the Air Force Drug Testing Lab Investigations Division during screening analysis for metabolites of JWH-018 and JWH-073, because it shares the same MRM transitions as the JWH-073 N- (3-hydroxybutyl) metabolite. However, the detected peak is chromatographically distinguished from other metabolites due to differences in retention time. This metabolite appears to be a common metabolite for select naphthoylindole-based synthetic cannabinoids that could potentially be used as a common biomarker for their qualitative and quantitative analyses. The new metabolite has been successfully identified as 3-(3-(1-naphthoyl)-1H-indol-1-yl) propanoic acid (1, JWH 072 N-propanoic acid metabolite, Fig. 1) by using various mass spectrometric and liquid chromatographic techniques as well as chemical derivatization. The metabolite identity was confirmed through the comparison of authentic positive urine and a chemically synthesized metabolite standard. Both materials shared the same chromatographic retention time on two separate chromatographic systems, mass fragmentation pattern and exact mass. Full characterization of the synthetic reference material and intermediates by 1H NMR, 13C NMR, IR and HRMS was also conducted. [ABSTRACT FROM AUTHOR] AB - Copyright of Forensic Science International is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HALLUCINOGENIC drugs KW - CANNABINOIDS KW - HALLUCINATIONS & illusions KW - SUBSTANCE-induced psychoses KW - DRUG use testing KW - MEDICAL screening KW - Common biomarker KW - JWH-072 metabolite KW - LC-TOF KW - NMR KW - Synthetic cannabinoid metabolites KW - UPLC N1 - Accession Number: 86414535; Lovett, Dennis P. 1; Email Address: dennis.lovett.ctr@us.af.mil Yanes, Enrique G. 1 Herbelin, Travis W. 1 Knoerzer, Timm A. 2 Levisky, Joseph A. 2; Affiliation: 1: HQ Air Force Drug Testing Laboratory, Lackland Air Force Base, TX 78236-5310, United States 2: HQ United States Air Force Academy/DFC 2355 Fairchild Drive, Suite 2N225 USAF Academy, CO 80840-6230, United States; Source Info: 2013, Vol. 226 Issue 1-3, p81; Subject Term: HALLUCINOGENIC drugs; Subject Term: CANNABINOIDS; Subject Term: HALLUCINATIONS & illusions; Subject Term: SUBSTANCE-induced psychoses; Subject Term: DRUG use testing; Subject Term: MEDICAL screening; Author-Supplied Keyword: Common biomarker; Author-Supplied Keyword: JWH-072 metabolite; Author-Supplied Keyword: LC-TOF; Author-Supplied Keyword: NMR; Author-Supplied Keyword: Synthetic cannabinoid metabolites; Author-Supplied Keyword: UPLC; NAICS/Industry Codes: 621999 All Other Miscellaneous Ambulatory Health Care Services; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.forsciint.2012.12.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86414535&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O.N. AU - Senkova, S.V. AU - Miracle, D.B. AU - Woodward, C. T1 - Mechanical properties of low-density, refractory multi-principal element alloys of the Cr–Nb–Ti–V–Zr system JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2013/03/10/ VL - 565 M3 - Article SP - 51 EP - 62 SN - 09215093 AB - Abstract: Room temperature and elevated temperature mechanical properties of four multi-principal element alloys, NbTiVZr, NbTiV2Zr, CrNbTiZr and CrNbTiVZr, are reported. The alloys were prepared by vacuum arc melting followed by hot isostatic pressing and homogenization. Disordered BCC solid solution phases are the major phases in these alloys. The Cr-containing alloys additionally contain an ordered FCC Laves phase. The NbTiVZr and NbTiV2Zr alloys showed good compressive ductility at all studied temperatures while the Cr-containing alloys showed brittle-to-ductile transition occurring somewhere between 298 and 873K. Strong work hardening was observed in the NbTiVZr and NbTiV2Zr alloys during deformation at room temperature. The alloys had yield strengths of 1105MPa and 918MPa, respectively, and their strength continuously increased, exceeding 2000MPa after ∼40% compression strain. The CrNbTiZr and CrNbTiVZr alloys showed high yield strength (1260MPa and 1298MPa, respectively) but low ductility (6% and 3% compression strain) at room temperature. Strain softening and steady state flow were typical during compression deformation of these alloys at temperatures above 873K. In these conditions, the alloys survived 50% compression strain without fracture and their yield strength continuously decreased with an increase in temperature. During deformation at 1273K, the NbTiVZr, NbTiV2Zr, CrNbTIZr, and CrNbTiVZr alloys showed yield strengths of 58MPa, 72MPa, 115MPa and 259MPa, respectively. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VACUUM arcs KW - ISOSTATIC pressing KW - SOLID solutions KW - CHROMIUM alloys KW - METALS -- Mechanical properties KW - COMPRESSIVE strength KW - METALS -- Ductility KW - Crystal structure KW - Mechanical properties KW - Microstructure KW - Refractory alloys N1 - Accession Number: 85615050; Senkov, O.N.; Email Address: oleg.senkov@wpafb.af.mil Senkova, S.V. 1 Miracle, D.B. 1 Woodward, C. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Mar2013, Vol. 565, p51; Subject Term: VACUUM arcs; Subject Term: ISOSTATIC pressing; Subject Term: SOLID solutions; Subject Term: CHROMIUM alloys; Subject Term: METALS -- Mechanical properties; Subject Term: COMPRESSIVE strength; Subject Term: METALS -- Ductility; Author-Supplied Keyword: Crystal structure; Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Refractory alloys; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.msea.2012.12.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85615050&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Choi, Sukwon AU - Heller, Eric AU - Dorsey, Donald AU - Vetury, Ramakrishna AU - Graham, Samuel T1 - Analysis of the residual stress distribution in AlGaN/GaN high electron mobility transistors. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/03/07/ VL - 113 IS - 9 M3 - Article SP - 093510 EP - 093510-8 PB - American Institute of Physics SN - 00218979 AB - A comparative analysis of the residual stress distributions across the conductive channel of Ga-face AlGaN/GaN high electron mobility transistors (HEMTs) is presented. Stress was measured by means of micro-Raman spectroscopy and micro-photoluminescence (PL). Raman measurements probed the volume average of the stress through the GaN layer whereas the stress near the GaN surface (AlGaN/GaN heterointerface) was acquired via PL. By combining Raman, PL, and x-ray diffraction, a self-consistent method was developed to accurately determine the variation in magnitude of stress throughout the thickness of the GaN layer. Based on this framework, it is observed in AlGaN/GaN HEMTs that a depth variation in the GaN residual stress occurs near the gate and ohmic electrodes. At these regions, the stress near the AlGaN/GaN interface (or GaN surface) exhibits a tensile shift compared to the stress averaged through the entire thickness of GaN. Across the conductive channel (away from the metal pads), the bulk average stress and the stress near this interface remain nearly identical, showing little evidence of a vertical gradient. It is expected that the induced tensile strain at the drain side gate edge will have an impact on device reliability by contributing to the elastic energy built in the AlGaN barrier in addition to the inverse piezoelectric contribution at operating conditions, which may lead to formation of crystallographic defects. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESIDUAL stresses KW - ELECTRON mobility KW - RAMAN spectroscopy KW - PHOTOLUMINESCENCE KW - X-ray diffraction KW - PIEZOELECTRIC materials KW - CRYSTALLOGRAPHY N1 - Accession Number: 85932534; Choi, Sukwon 1 Heller, Eric 2 Dorsey, Donald 2 Vetury, Ramakrishna 3 Graham, Samuel 1; Affiliation: 1: Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, 3: Defense and Power Business Unit, RFMD, Charlotte, North Carolina 28269,; Source Info: Mar2013, Vol. 113 Issue 9, p093510; Subject Term: RESIDUAL stresses; Subject Term: ELECTRON mobility; Subject Term: RAMAN spectroscopy; Subject Term: PHOTOLUMINESCENCE; Subject Term: X-ray diffraction; Subject Term: PIEZOELECTRIC materials; Subject Term: CRYSTALLOGRAPHY; Number of Pages: 1p; Illustrations: 1 Diagram, 4 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.4794009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85932534&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Suri, Suresh C. AU - Marcischak, Jacob C. T1 - Efficient Synthesis of 1,2-Dicyclopropylethyne and (Cyclopropylethynyl)cyclobutane from 1,2-Di-(ω-haloalkyl)ethynes and 1-Cycloalkyl-2-(ω-haloalkyl)ethynes. JO - Organic Preparations & Procedures International JF - Organic Preparations & Procedures International Y1 - 2013/03/04/ VL - 45 IS - 2 M3 - Article SP - 154 EP - 161 SN - 00304948 AB - The article discusses effective and economic synthesis of 1,2- dicyclopropylethyne and cyclobutane from 1-cycloalkyl-2-(ω-haloalkyl) ethynes and 1,2-di-(ω-haloalkyl) ethnynes. It says that 1-ω-haloalkylcycloalkyl-or 1,2-di(ω-haloalkyl)alkynes preparation, precursor needed for cyclization to 1,2-dicycloalkylacetylenes from 1-bromo-3-chloropropane and 1-bromo-4-chlorobutane in tetrahydrofuran (THF). It mentions that 1,8-dichlorooct-4-yne or (5-chloropent-1-ynyl)cyclopropane treatment were prepared lithium diisopropylamide (LDA). Results show that 1,8-dichloro-4-octyne yield, 1,2-dicyclopropylethyne precursor has been improved by the use of catalytic amount of n-Bu4NI. KW - SYNTHESIS (Chemistry) KW - RESEARCH KW - CYCLOBUTANE synthesis KW - CLICK chemistry KW - ACETYLENE -- Synthesis KW - CHEMICAL precursors KW - RING formation (Chemistry) KW - TETRAHYDROFURAN KW - CYCLOPROPANE KW - LITHIUM diisopropylamide N1 - Accession Number: 86213863; Suri, Suresh C. 1; Email Address: suresh.suri@edwards.af.mil Marcischak, Jacob C. 1; Affiliation: 1: Rocket Propulsion Division/Propellants Branch, Air Force Research Laboratory 10 East Saturn Boulevard, Edwards Air Force Base, CA, USA; Source Info: Mar2013, Vol. 45 Issue 2, p154; Subject Term: SYNTHESIS (Chemistry); Subject Term: RESEARCH; Subject Term: CYCLOBUTANE synthesis; Subject Term: CLICK chemistry; Subject Term: ACETYLENE -- Synthesis; Subject Term: CHEMICAL precursors; Subject Term: RING formation (Chemistry); Subject Term: TETRAHYDROFURAN; Subject Term: CYCLOPROPANE; Subject Term: LITHIUM diisopropylamide; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1080/00304948.2013.764789 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86213863&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sabol, C. AU - Hill, K. AU - Alfriend, K. AU - Sukut, T. T1 - Nonlinear effects in the correlation of tracks and covariance propagation JO - Acta Astronautica JF - Acta Astronautica Y1 - 2013/03// VL - 84 M3 - Article SP - 69 EP - 80 SN - 00945765 AB - Abstract: Even though there are methods for the nonlinear propagation of the covariance the propagation of the covariance in current operational programs is based on the state transition matrix of the 1st variational equations, thus it is a linear propagation. If the measurement errors are zero mean Gaussian, the orbit errors, statistically represented by the covariance, are Gaussian. When the orbit errors become too large they are no longer Gaussian and not represented by the covariance. One use of the covariance is the association of uncorrelated tracks (UCTs). A UCT is an object tracked by a space surveillance system that does not correlate to another object in the space object data base. For an object to be entered into the data base three or more tracks must be correlated. Associating UCTs is a major challenge for a space surveillance system since every object entered into the space object catalog begins as a UCT. It has been proved that if the orbit errors are Gaussian, the error ellipsoid represented by the covariance is the optimum association volume. When the time between tracks becomes large, hours or even days, the orbit errors can become large and are no longer Gaussian, and this has a negative effect on the association of UCTs. This paper further investigates the nonlinear effects on the accuracy of the covariance for use in correlation. The use of the best coordinate system and the unscented Kalman Filter (UKF) for providing a more accurate covariance are investigated along with assessing how these approaches would result in the ability to correlate tracks that are further separated in time. [Copyright &y& Elsevier] AB - Copyright of Acta Astronautica is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR systems KW - ANALYSIS of covariance KW - MEASUREMENT errors KW - SPACE surveillance KW - KALMAN filtering KW - CORRELATION (Statistics) KW - Astrodynamics KW - Covariance propagation N1 - Accession Number: 85279377; Sabol, C. 1 Hill, K. 2; Email Address: keric.hill@pacificds.com Alfriend, K. 3; Email Address: Alfriend@tamu.edu Sukut, T. 4; Affiliation: 1: Air Force Maui and Optical Computing, Air Force Research Laboratory, USA 2: Pacific Defense Solutions, USA 3: Texas A&M University, USA 4: USAF, USA; Source Info: Mar2013, Vol. 84, p69; Subject Term: NONLINEAR systems; Subject Term: ANALYSIS of covariance; Subject Term: MEASUREMENT errors; Subject Term: SPACE surveillance; Subject Term: KALMAN filtering; Subject Term: CORRELATION (Statistics); Author-Supplied Keyword: Astrodynamics; Author-Supplied Keyword: Covariance propagation; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.actaastro.2012.08.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85279377&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O.N. AU - Senkova, S.V. AU - Woodward, C. AU - Miracle, D.B. T1 - Low-density, refractory multi-principal element alloys of the Cr–Nb–Ti–V–Zr system: Microstructure and phase analysis JO - Acta Materialia JF - Acta Materialia Y1 - 2013/03// VL - 61 IS - 5 M3 - Article SP - 1545 EP - 1557 SN - 13596454 AB - Abstract: The crystal structure, microstructure, density and Vickers hardness of four multi-principal element alloys, NbTiVZr, NbTiV2Zr, CrNbTiZr, and CrNbTiVZr, are reported. The characteristics of these potential new high-temperature structural alloys are explored. The alloys were prepared by vacuum arc melting followed by hot isostatic pressing (at 1200°C, 207MPa for 1h) and homogenization annealing (at 1200°C for 24h). The alloys have densities of 6.52, 6.34, 6.67 and 6.57gcm−3, and Vickers microhardness values of 3.29, 2.99, 4.10 and 4.72GPa, respectively. The NbTiVZr alloy is essentially a single-phase alloy consisting of a coarse-grained disordered body-centered cubic (bcc) phase with fine, submicron-size precipitates inside the grains. The NbTiV2Zr alloy contains three disordered bcc phases. The CrNbTiZr and CrNbTiVZr alloys contain a disordered bcc phase and an ordered Laves phase. The lattice parameters and compositions of the identified phases are reported. The experimental data are compared with the results of the thermodynamic modeling of non-equilibrium and equilibrium phases in these alloys. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHROMIUM alloys KW - CHEMICAL systems KW - MICROSTRUCTURE KW - CRYSTAL structure KW - DENSITY KW - HEAT resistant alloys KW - VACUUM arcs KW - MICROHARDNESS KW - CALPHAD KW - Crystal structure KW - Microstructure KW - Refractory alloys N1 - Accession Number: 85398249; Senkov, O.N.; Email Address: oleg.senkov@wpafb.af.mil Senkova, S.V. 1 Woodward, C. 1 Miracle, D.B. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Mar2013, Vol. 61 Issue 5, p1545; Subject Term: CHROMIUM alloys; Subject Term: CHEMICAL systems; Subject Term: MICROSTRUCTURE; Subject Term: CRYSTAL structure; Subject Term: DENSITY; Subject Term: HEAT resistant alloys; Subject Term: VACUUM arcs; Subject Term: MICROHARDNESS; Author-Supplied Keyword: CALPHAD; Author-Supplied Keyword: Crystal structure; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Refractory alloys; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.actamat.2012.11.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85398249&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kalesnik, Frank T1 - Cataclysm: General Hap Arnold and the Defeat of Japan. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2013/03//Mar/Apr2013 VL - 27 IS - 2 M3 - Book Review SP - 169 EP - 171 PB - Superintendent of Documents SN - 1555385X AB - The article reviews the book "Cataclysm: General Hap Arnold and the Defeat of Japan" by Herman S. Wolk. KW - JAPANESE war stories KW - NONFICTION KW - WOLK, Herman S. KW - CATACLYSM: General Hap Arnold & the Defeat of Japan (Book) N1 - Accession Number: 87572361; Kalesnik, Frank 1; Affiliation: 1: Air Force Research Laboratory History Office, Wright-Patterson AFB, Ohio; Source Info: Mar/Apr2013, Vol. 27 Issue 2, p169; Subject Term: JAPANESE war stories; Subject Term: NONFICTION; Reviews & Products: CATACLYSM: General Hap Arnold & the Defeat of Japan (Book); People: WOLK, Herman S.; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87572361&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cooke, Nancy J. AU - Gorman, Jamie C. AU - Myers, Christopher W. AU - Duran, Jasmine L. T1 - Interactive Team Cognition. JO - Cognitive Science JF - Cognitive Science Y1 - 2013/03// VL - 37 IS - 2 M3 - Article SP - 255 EP - 285 SN - 03640213 AB - Cognition in work teams has been predominantly understood and explained in terms of shared cognition with a focus on the similarity of static knowledge structures across individual team members. Inspired by the current zeitgeist in cognitive science, as well as by empirical data and pragmatic concerns, we offer an alternative theory of team cognition. Interactive Team Cognition (ITC) theory posits that (1) team cognition is an activity, not a property or a product; (2) team cognition should be measured and studied at the team level; and (3) team cognition is inextricably tied to context. There are implications of ITC for theory building, modeling, measurement, and applications that make teams more effective performers. [ABSTRACT FROM AUTHOR] AB - Copyright of Cognitive Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LANGUAGE & languages -- Cognitive processing KW - COGNITIVE learning theory KW - COGNITIVE science KW - INTERACTIVE learning KW - COGNITIVE development KW - Communication KW - Dynamical systems KW - Interaction KW - Shared cognition KW - Team cognition N1 - Accession Number: 85872444; Cooke, Nancy J. 1 Gorman, Jamie C. 2 Myers, Christopher W. 3 Duran, Jasmine L. 4; Affiliation: 1: Cognitive Science and Engineering, Arizona State University 2: Department of Psychology, Texas Tech University 3: Air Force Research Laboratory 4: Lumir Research Institute, Inc.; Source Info: Mar2013, Vol. 37 Issue 2, p255; Subject Term: LANGUAGE & languages -- Cognitive processing; Subject Term: COGNITIVE learning theory; Subject Term: COGNITIVE science; Subject Term: INTERACTIVE learning; Subject Term: COGNITIVE development; Author-Supplied Keyword: Communication; Author-Supplied Keyword: Dynamical systems; Author-Supplied Keyword: Interaction; Author-Supplied Keyword: Shared cognition; Author-Supplied Keyword: Team cognition; Number of Pages: 31p; Illustrations: 1 Diagram, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1111/cogs.12009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85872444&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Do, Hyungrok AU - Carter, Campbell T1 - Hydrocarbon fuel concentration measurement in reacting flows using short-gated emission spectra of laser induced plasma JO - Combustion & Flame JF - Combustion & Flame Y1 - 2013/03// VL - 160 IS - 3 M3 - Article SP - 601 EP - 609 SN - 00102180 AB - Abstract: Laser Induced Breakdown Spectroscopy (LIBS) is used to measure hydrocarbon fuel concentration in reacting flows. Emission spectra of the plasma induced by a focused-laser beam (Nd:YAG laser at 532nm) are correlated with hydrocarbon fuel concentration in regions upstream (reactants) and downstream (combustion products) of a flame and adjacent to the combustion reaction zone. Nitrogen (568nm) and hydrogen (656nm) atomic emission lines are selected to establish a correlation between the line intensities and fuel concentration. These correlations are effective in a wide range of fuel mole fraction (7–90% methane/air and 5–93% ethylene/air mixtures) and independent of flow velocity. Nevertheless, the correlation depends on gas species in the plasma. Three individual correlations for premixed methane/air, ethylene/air and combustion product gases are established. For the application of the LIBS in high-speed flows, the emission spectrum is captured employing a 10-ns time gate approximately 25ns after initial emission of radiation (from the probe region). The 25-ns gate delay is chosen to avoid broadband thermal emission from the high-temperature plasma core and achieve high spectrum signal intensity with reasonable signal-to-noise ratio of the atomic emission lines. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROCARBONS KW - EMISSION spectroscopy KW - LASER plasmas KW - LASER-induced breakdown spectroscopy KW - COMBUSTION KW - NITROGEN KW - HYDROGEN KW - SIGNAL-to-noise ratio KW - Emission Spectroscopy KW - Fuel concentration measurement KW - Laser-induced breakdown KW - Plasma Emission KW - Short-gated LIBS N1 - Accession Number: 85154593; Do, Hyungrok 1; Email Address: hdo3@nd.edu Carter, Campbell 2; Affiliation: 1: Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, IN 46556-5684, United States 2: Air Force Research Laboratory (AFRL), Wright-Patterson Air Force Base, OH 45433, United States; Source Info: Mar2013, Vol. 160 Issue 3, p601; Subject Term: HYDROCARBONS; Subject Term: EMISSION spectroscopy; Subject Term: LASER plasmas; Subject Term: LASER-induced breakdown spectroscopy; Subject Term: COMBUSTION; Subject Term: NITROGEN; Subject Term: HYDROGEN; Subject Term: SIGNAL-to-noise ratio; Author-Supplied Keyword: Emission Spectroscopy; Author-Supplied Keyword: Fuel concentration measurement; Author-Supplied Keyword: Laser-induced breakdown; Author-Supplied Keyword: Plasma Emission; Author-Supplied Keyword: Short-gated LIBS; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.combustflame.2012.12.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85154593&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Le, Hai P. AU - Cambier, Jean-Luc AU - Cole, Lord K. T1 - GPU-based flow simulation with detailed chemical kinetics JO - Computer Physics Communications JF - Computer Physics Communications Y1 - 2013/03// VL - 184 IS - 3 M3 - Article SP - 596 EP - 606 SN - 00104655 AB - Abstract: The current paper reports on the implementation of a numerical solver on the Graphic Processing Units (GPUs) to model reactive gas mixtures with detailed chemical kinetics. The solver incorporates high-order finite volume methods for solving the fluid dynamical equations coupled with stiff source terms. The chemical kinetics are solved implicitly via an operator-splitting method. We explored different approaches in implementing a fast kinetics solver on the GPU. The detail of the implementation is discussed in the paper. The solver is tested with two high-order shock capturing schemes: MP5 (Suresh and Huynh, 1997) [9] and ADERWENO (Titarev and Toro, 2005) [10]. Considering only the fluid dynamics calculation, the speed-up factors obtained are 30 for the MP5 scheme and 55 for ADERWENO scheme. For the fully-coupled solver, the performance gain depended on the size of the reaction mechanism. Two different examples of chemistry were explored. The first mechanism consisted of 9 species and 38 reactions, resulting in a speed-up factor up to 35. The second, larger mechanism, consisted of 36 species and 308 reactions, resulting in a speed-up factor of up to 40. [Copyright &y& Elsevier] AB - Copyright of Computer Physics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPHICS processing units (Computers) KW - FLOW simulation (Fluid dynamics) KW - CHEMICAL kinetics KW - NUMERICAL analysis KW - PROBLEM solving KW - FLUID dynamics KW - Cellular detonation KW - Chemical kinetics KW - Computational fluid dynamics KW - Finite volume KW - GPU N1 - Accession Number: 84589792; Le, Hai P. 1; Email Address: hai.le@ucla.edu Cambier, Jean-Luc 2 Cole, Lord K. 1; Affiliation: 1: Mechanical and Aerospace Engineering Department, University of California, Los Angeles, CA 90095-1597, United States 2: US Air Force Research Laboratory, Edwards AFB, CA 93524, United States; Source Info: Mar2013, Vol. 184 Issue 3, p596; Subject Term: GRAPHICS processing units (Computers); Subject Term: FLOW simulation (Fluid dynamics); Subject Term: CHEMICAL kinetics; Subject Term: NUMERICAL analysis; Subject Term: PROBLEM solving; Subject Term: FLUID dynamics; Author-Supplied Keyword: Cellular detonation; Author-Supplied Keyword: Chemical kinetics; Author-Supplied Keyword: Computational fluid dynamics; Author-Supplied Keyword: Finite volume; Author-Supplied Keyword: GPU; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.cpc.2012.10.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84589792&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ye, Nong AU - Aranda, Billibaldo Martinez AU - Hurley, Patrick T1 - System impact characteristics of cyber services, security mechanisms, and attacks with implications in cyber system survivability. JO - Information Knowledge Systems Management JF - Information Knowledge Systems Management Y1 - 2013/03// VL - 12 IS - 1 M3 - Article SP - 75 EP - 95 PB - IOS Press SN - 13891995 AB - Three types of activities may run on computer and network systems at the same time: services, security mechanisms, and attacks. Computer and network systems should sustain legitimate cyber services even under attacks. In this study, system impacts of services, security mechanisms and attacks are investigated and used to develop strategies for system survivability. Experiments are conducted to collect system dynamics data under two services of voice communication and motion detection, two security mechanisms of data encryption and intrusion detection, and five cyber attacks. Statistical analyses are performed on the experimental data to identify system-wide impacts of services, security mechanisms and attacks on system activities, state and performance. The analytical results reveal the system impact characteristics of these services, security mechanisms, and attacks on IO and file operations and bytes, page and cache faults, memory usage, CPU usage, and network traffic. The competition for system resources by all the activities in the system manifests themselves predominantly in their competition for limited CPU time. This competition for limited CPU time can be used as a strategy to ensure system survivability by increasing the activity level of legitimate services to leave less CPU time for attacks and thus suppress the level and system impacts of attacks while sustaining CPU time for legitimate services. [ABSTRACT FROM AUTHOR] AB - Copyright of Information Knowledge Systems Management is the property of IOS Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CYBERTERRORISM KW - DATA encryption (Computer science) KW - INTERNET security KW - COMPUTER networks KW - QUANTITATIVE research KW - attacks KW - Computer and network services KW - security KW - system impacts KW - system survivability N1 - Accession Number: 90202818; Ye, Nong 1 Aranda, Billibaldo Martinez 1 Hurley, Patrick 2; Affiliation: 1: School of Computing, Informatics, Decision Systems Engineering, Arizona State University, Tempe, AZ, USA 2: U.S. Air Force Research Laboratory/RIGA, Rome, NY, USA; Source Info: 2013, Vol. 12 Issue 1, p75; Subject Term: CYBERTERRORISM; Subject Term: DATA encryption (Computer science); Subject Term: INTERNET security; Subject Term: COMPUTER networks; Subject Term: QUANTITATIVE research; Author-Supplied Keyword: attacks; Author-Supplied Keyword: Computer and network services; Author-Supplied Keyword: security; Author-Supplied Keyword: system impacts; Author-Supplied Keyword: system survivability; NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; Number of Pages: 21p; Document Type: Article L3 - 10.3233/IKS-130217 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90202818&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Armani, Clinton J. AU - Ruggles-Wrenn, Marina B. AU - Fair, Geoff E. AU - Hay, Randall S. T1 - Creep of Nextel™ 610 Fiber at 1100°C in Air and in Steam Creep of Nextel™ 610 Fiber at 1100°C in Air and in Steam. JO - International Journal of Applied Ceramic Technology JF - International Journal of Applied Ceramic Technology Y1 - 2013/03// VL - 10 IS - 2 M3 - Article SP - 276 EP - 284 SN - 1546542X AB - Creep of Nextel™610 fibers was investigated at 1100°C and 100-500 MPa in air and in steam. The effect of loading rate on fiber tensile strength was also explored. The presence of steam accelerated creep and reduced fiber lifetimes. Loading rate had a considerable effect on tensile strength in steam, but not in air. A linear elastic crack growth model was used to predict the creep lifetimes from the constant loading rate data. The dependence of tensile strength on loading rate and the predictability of creep lifetimes suggest that the failure mechanism in steam was environmentally assisted subcritical crack growth. The creep-rupture data were analyzed in terms of a Monkman-Grant ( MG) relationship. Monkman-Grant parameters for creep-rupture data were the same in steam and air, and predicted creep-rupture at 1100°C in both environments. A grain-size increase of about 25% was observed by TEM after 100 h at 1100°C in steam, which was about two times that observed in air. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Applied Ceramic Technology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Creep KW - FIBERS KW - TENSILE strength KW - FRACTURE mechanics KW - LOADS (Mechanics) KW - ELASTICITY KW - STEAM N1 - Accession Number: 85896871; Armani, Clinton J. 1 Ruggles-Wrenn, Marina B. 1 Fair, Geoff E. 2 Hay, Randall S. 2; Affiliation: 1: Air Force Institute of Technology, Wright-Patterson Air Force Base 2: Air Force Research Laboratory, Wright-Patterson Air Force Base; Source Info: Mar2013, Vol. 10 Issue 2, p276; Subject Term: METALS -- Creep; Subject Term: FIBERS; Subject Term: TENSILE strength; Subject Term: FRACTURE mechanics; Subject Term: LOADS (Mechanics); Subject Term: ELASTICITY; Subject Term: STEAM; Number of Pages: 9p; Document Type: Article L3 - 10.1111/j.1744-7402.2012.02831.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85896871&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carney, Carmen M. AU - Parthasarathy, Triplicane A. AU - Cinibulk, Michael K. T1 - Separating Test Artifacts from Material Behavior in the Oxidation Studies of HfB2-SiC at 2000°C and Above. JO - International Journal of Applied Ceramic Technology JF - International Journal of Applied Ceramic Technology Y1 - 2013/03// VL - 10 IS - 2 M3 - Article SP - 293 EP - 300 SN - 1546542X AB - Oxidation characteristics of HfB2-15 vol% SiC prepared by field-assisted sintering was examined at 2000°C by heating it in a zirconia-resistance furnace and by direct electrical resistance heating of the sample. Limitations of the material and the direct electrical resistance heating apparatus were explored by heating samples multiple times and to temperatures in excess of 2300°C. Oxide scales that developed at 2000°C from both methods were similar in that they consisted of a SiO2/ HfO2 outer layer, a porous HfO2 layer, and a HfB2 layer depleted of SiC. But they differed in scale thicknesses, impurities present, scale morphology/complexity. Possible test artifacts are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Applied Ceramic Technology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HAFNIUM compounds KW - OXIDATION KW - SILICON carbide KW - SINTERING KW - RESISTANCE heating KW - ZIRCONIUM oxide KW - TEMPERATURE effect KW - METALS -- Inclusions KW - THICKNESS measurement N1 - Accession Number: 85896864; Carney, Carmen M. 1 Parthasarathy, Triplicane A. 1 Cinibulk, Michael K. 2; Affiliation: 1: UES, Inc 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base; Source Info: Mar2013, Vol. 10 Issue 2, p293; Subject Term: HAFNIUM compounds; Subject Term: OXIDATION; Subject Term: SILICON carbide; Subject Term: SINTERING; Subject Term: RESISTANCE heating; Subject Term: ZIRCONIUM oxide; Subject Term: TEMPERATURE effect; Subject Term: METALS -- Inclusions; Subject Term: THICKNESS measurement; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 212210 Iron Ore Mining; Number of Pages: 8p; Document Type: Article L3 - 10.1111/j.1744-7402.2011.02730.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85896864&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Norris, Aaron G. AU - Palazotto, Anthony N. AU - Cobb, Richard G. T1 - Experimental Structural Dynamic Characterization of the Hawkmoth (Manduca Sexta) Forewing. JO - International Journal of Micro Air Vehicles JF - International Journal of Micro Air Vehicles Y1 - 2013/03// VL - 5 IS - 1 M3 - Article SP - 39 EP - 54 SN - 17568293 AB - While many bio-inspired flapping wing micro air vehicle wing designs continue to be conceived and studied in earnest, a general consensus of which physical attributes of the biological entity are important for flight is still at-large. It is proposed herein that the eigenstructure of the wing should figure prominently among rigorous engineering metrics for guiding flapping wing micro air vehicle wing designs at the scales of large insects. With virtually no compelling work done in this area to date, the method and results of system identification tests for the forewings of a representative sample of hawkmoth (Manduca Sexta) are presented, revealing the underlying structural nature of this incredibly agile flyer's wings. Despite their inherent biological variability, these wings show very little variability in eigenstructure which may suggest it as a critical attribute for robust flight. Further supporting this hypothesis, the wings of four other insect species are briefly examined and show remarkable similarity with the hawkmoth wing's eigenstructure. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Micro Air Vehicles is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICRO air vehicles KW - SPHINGIDAE KW - EIGENANALYSIS KW - EIGENFACTOR KW - STRUCTURAL dynamics KW - PHYSICAL anthropology N1 - Accession Number: 87372340; Norris, Aaron G. 1 Palazotto, Anthony N. 2 Cobb, Richard G. 2; Affiliation: 1: Munitions Directorate, Air Force Research Laboratory 2: Department of Aeronautics and Astronautics, Air Force Institute of Technology; Source Info: Mar2013, Vol. 5 Issue 1, p39; Subject Term: MICRO air vehicles; Subject Term: SPHINGIDAE; Subject Term: EIGENANALYSIS; Subject Term: EIGENFACTOR; Subject Term: STRUCTURAL dynamics; Subject Term: PHYSICAL anthropology; Number of Pages: 16p; Document Type: Article L3 - 10.1260/1756-8293.5.1.39 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87372340&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jelic, Renato AU - Sherer, Scott AU - Greendyke, Robert T1 - Simulation of Various Turrets at Subsonic and Transonic Flight Conditions Using OVERFLOW. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2013/03//Mar/Apr2013 VL - 50 IS - 2 M3 - Article SP - 398 EP - 409 SN - 00218669 AB - In this work, the flowfields associated with two canonical turret geometries, a fully exposed hemisphere on a flat plate and a 50% submerged hemisphere on a flat plate, were simulated using the OVERFLOW 2 flow solver. Both turret geometries use a flat-window aperture with an aperture ratio (ratio of the aperture diameter to the turret diameter) of 0.295 and an elevation angle of 57 deg. The forward field of regard was the particular focus in this study, and both symmetric (azimuth angle of 0 deg) and asymmetric (azimuth of 45 deg) window orientations were examined. Two flight conditions were also studied: a subsonic case with M = 0.45 and ReD = 6.30 x 106 and a transonic case with M is 0.85 and ReD = 9.53 x 106. The flowfield was simulated using the delayed detached-eddy simulation capability of OVERFLOW in conjunction with thespatially fifth-order weighted essentially nonoscillatory scheme to capture the off-body vortical structures. The impact of the turret aerodynamics on the performance of the turrets for directed energy applications is inferred through consideration of the flow features, density and pressure fluctuations, and forces on the turrets. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIMULATION methods & models KW - TURRETS KW - TRANSONIC aerodynamics KW - FLUX-line lattice KW - OPTICAL apertures N1 - Accession Number: 87628086; Jelic, Renato 1 Sherer, Scott 1 Greendyke, Robert 2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7521 2: U.S. Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433-7521; Source Info: Mar/Apr2013, Vol. 50 Issue 2, p398; Subject Term: SIMULATION methods & models; Subject Term: TURRETS; Subject Term: TRANSONIC aerodynamics; Subject Term: FLUX-line lattice; Subject Term: OPTICAL apertures; Number of Pages: 12p; Document Type: Article L3 - 10.2514/1.C031844 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87628086&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ricciardi, Anthony P. AU - Patil, Mayuresh J. AU - Canfield, Robert A. AU - Lindsley, Ned T1 - Evaluation of Quasi-Static Gust Loads Certification Methods for High-Altitude Long-Endurance Aircraft. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2013/03//Mar/Apr2013 VL - 50 IS - 2 M3 - Article SP - 457 EP - 468 SN - 00218669 AB - Aeroelastic gust loads analysis can be approached using quasi-static, transient, or continuous methodologies. Pratt method is a quasi-static approach that forms the basis for Federal Aviation Regulation Part 23 gust loads certification requirements. This work evaluates the usefulness of Pratt method for unconventional high-altitude long- endurance aircraft. The derivation of Pratt method is reviewed, and all assumptions are identified. Error of a key curve fit equation is quantified directly. A state-of-the-art nonlinear aeroelastic code was upgraded and used to facilitate quantification of application-dependent errors by comparing quasi-static results to results from nonlinear transient analysis. Application-dependent errors are presented in the context of a SensorCraft-inspired joined-wing model and a Helios-aircraft-inspired flying-wing model. Recommendations are made on the usability of Pratt method for aircraft similar to the two high-altitude long-endurance models. It is concluded that Pratt method is useful for preliminary design of the joined-wing model but inadequate for the analysis of the flying-wing model. Further recommendations are made regarding the subtleties in the implementation of Pratt method for unconventional configurations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUASISTATIC processes KW - AEROELASTICITY KW - TAILLESS airplanes KW - TURBULENCE KW - UNITED States. Federal Aviation Administration N1 - Accession Number: 87628091; Ricciardi, Anthony P. 1 Patil, Mayuresh J. 1 Canfield, Robert A. 1 Lindsley, Ned 2; Affiliation: 1: Virginia Polytechnical Institute and State University, Blacksburg, Virginia 24061 2: U.S. Air Force Research Laboratory, Wright–Patterson Air Force Base, Ohio 45433; Source Info: Mar/Apr2013, Vol. 50 Issue 2, p457; Subject Term: QUASISTATIC processes; Subject Term: AEROELASTICITY; Subject Term: TAILLESS airplanes; Subject Term: TURBULENCE; Company/Entity: UNITED States. Federal Aviation Administration; NAICS/Industry Codes: 926120 Regulation and Administration of Transportation Programs; Number of Pages: 12p; Document Type: Article L3 - 10.2514/1.C031872 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87628091&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Keren, Hila AU - Fuxb, Michal AU - Mort, Joel AU - Lawson, E. Thomas AU - Eilam, David T1 - Are Motor Collective Rituals as Rigid as They Seem? A Test Case of a Zulu Wedding Dance. JO - Journal of Cognition & Culture JF - Journal of Cognition & Culture Y1 - 2013/03// VL - 13 IS - 1/2 M3 - Article SP - 17 EP - 32 PB - Brill Academic Publishers SN - 15677095 AB - Rituals are common in religion, sports, culture and specific life-stages (childhood, parenthood, etc.), raising the question of why being engaged in such activity, what could be its benefit, and how rigid they are. Here we analyzed 19 episodes of a Zulu Umsindo dance performed by lo women. This ritual comprised a common act, performed in all dance episodes of all women, personal acts performed consistently by one woman but not by the others, and sporadic acts that varied both among and within women. There were significantly more sporadic than personal acts, and more personal than common acts, with only one common act that was performed in all 19 dance episodes. Personal and sporadic acts comprised about 90% of the dance repertoire, attesting a high flexibility in performance. Despite this high flexibility, the dance attained a seemingly rigid form due to three properties: (i) fixed temporal order that was preserved in all the dance episodes; (ii) a common act that was consistently performed by all women; and (iii) a high rate of repetition of the common act. These properties rendered the ritual its rigid form, along with enabling the dancers to display great flexibility in act repertoire. This analysis sheds new light on the content and structure of collective rituals, implicating on the understanding of how social transmission may occur, and giving potential evidence for the Sperberian view on cultural transmission. Finally, the Zulu dance seems to possess a communicative value in group solidarity without a direct involvement of precautionary systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Cognition & Culture is the property of Brill Academic Publishers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZULU (African people) KW - WEDDINGS KW - RITES & ceremonies KW - RITUALISM KW - DANCE KW - group solidarity KW - hazard precautionary system KW - Motor patterns KW - repetitive behaviour N1 - Accession Number: 86892749; Keren, Hila 1 Fuxb, Michal 2 Mort, Joel 3 Lawson, E. Thomas 1 Eilam, David 1; Email Address: eilam@post.tau.ac.il; Affiliation: 1: Department of Zoology, Tel-Aviv University, Ramat-Aviv 69978, Israel 2: Department of Biblical and Ancient Studies, University of South Africa, Pretoria, South Africa 3: 711th Human Performance Wing, US Air Force Research Laboratory, WPAFB, OH, USA; Source Info: 2013, Vol. 13 Issue 1/2, p17; Subject Term: ZULU (African people); Subject Term: WEDDINGS; Subject Term: RITES & ceremonies; Subject Term: RITUALISM; Subject Term: DANCE; Author-Supplied Keyword: group solidarity; Author-Supplied Keyword: hazard precautionary system; Author-Supplied Keyword: Motor patterns; Author-Supplied Keyword: repetitive behaviour; Number of Pages: 16p; Illustrations: 1 Black and White Photograph, 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1163/15685373-12342082 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86892749&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Knopp, Jeremy AU - Grandhi, Ramana AU - Aldrin, John AU - Park, Inseok T1 - Statistical Analysis of Eddy Current Data from Fastener Site Inspections. JO - Journal of Nondestructive Evaluation JF - Journal of Nondestructive Evaluation Y1 - 2013/03// VL - 32 IS - 1 M3 - Article SP - 44 EP - 50 SN - 01959298 AB - Recent work on reliably detecting and characterizing cracks in multi-layer airframe structures has used modeling and simulation to extract features from raw eddy current data, and to assist in the evaluation of probability of detection (POD). This paper focuses on the statistical analysis of the data from these studies. Hit/miss, linear, and physics-inspired methods are employed to evaluate POD. The Box-Cox transformation is used as a remedy for violations of the constant variance assumption. In addition, a bootstrapping method is introduced for confidence bound calculation on a 2nd order linear model. The objective of this work is to provide on insight how different models and assumptions impact POD evaluation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nondestructive Evaluation is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - QUANTITATIVE research KW - AIRFRAMES KW - LINEAR models (Statistics) KW - BOOTSTRAPPING (Statistics) KW - SIMULATION methods & models KW - MATHEMATICAL models KW - Bootstrap confidence intervals KW - Box-Cox transformation KW - Eddy current KW - Fastener site inspection KW - Probability of detection N1 - Accession Number: 85596085; Knopp, Jeremy 1; Email Address: jeremy.knopp@wpafb.af.mil Grandhi, Ramana 2 Aldrin, John 3 Park, Inseok 2; Affiliation: 1: Air Force Research Laboratory (AFRL/RXLP), Wright-Patterson AFB 45433 USA 2: Wright State University, 3640 Colonel Glenn Hwy. Dayton 45435 USA 3: Computational Tools, 4275 Chatham Ave. Gurnee 60031 USA; Source Info: Mar2013, Vol. 32 Issue 1, p44; Subject Term: EDDY currents (Electric); Subject Term: QUANTITATIVE research; Subject Term: AIRFRAMES; Subject Term: LINEAR models (Statistics); Subject Term: BOOTSTRAPPING (Statistics); Subject Term: SIMULATION methods & models; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: Bootstrap confidence intervals; Author-Supplied Keyword: Box-Cox transformation; Author-Supplied Keyword: Eddy current; Author-Supplied Keyword: Fastener site inspection; Author-Supplied Keyword: Probability of detection; Number of Pages: 7p; Document Type: Article L3 - 10.1007/s10921-012-0157-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85596085&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Atkinson, Michael AU - Roggie, Jonathan AU - Camberas, José T1 - Control of High-Angle-of-Attack Reentry Flow with Plasma Actuators. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2013/03//Mar/Apr2013 VL - 50 IS - 2 M3 - Article SP - 337 EP - 346 SN - 00224650 AB - A numerical investigation was conducted to explore the potential of magnetically accelerated surface discharges to control the flow over reentry vehicles at high angle of attack. The baseline geometry and test conditions were selected based on experiments: a 2:1 blunt-nosed elliptic cone with a half-angle along the major axis of 10 deg, a Mach number of 14.5, a Reynolds number based on a length of 36,000, and an angle of attack of 60 deg. A phenomenological model was developed, based on experiments and computations, to simulate the effects of magnetically accelerated surface discharges on the elliptic cone flow. Control was applied near the leeward-side crossflow separation line, and several actuator configurations were considered, include symmetric and asymmetric patterns and inboard and outboard forces. There were substantial changes in the leeward-side flow structure with actuation. Moments generated about the pitch, yaw, and roll axes were quantified, along with the corresponding heat transfer penalty and actuator power consumption. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA (Ionized gases) KW - ACTUATORS KW - ENERGY consumption KW - SURFACE discharges (Electricity) KW - REYNOLDS number KW - PHENOMENOLOGICAL theory (Physics) N1 - Accession Number: 86993519; Atkinson, Michael 1,2,3 Roggie, Jonathan 1,4 Camberas, José 1,5; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Engineer/Technologist, Aero Systems, GE Aviation 3: Member, AIAA 4: High-Speed Flow Research Team, Computational Sciences Center 5: Prototype Design Exploration, Multidisciplinary Science and Technology Center; Source Info: Mar/Apr2013, Vol. 50 Issue 2, p337; Subject Term: PLASMA (Ionized gases); Subject Term: ACTUATORS; Subject Term: ENERGY consumption; Subject Term: SURFACE discharges (Electricity); Subject Term: REYNOLDS number; Subject Term: PHENOMENOLOGICAL theory (Physics); NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.2514/1.A32360 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86993519&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parthasarathy, Triplicane A. AU - Petry, Melvin D. AU - Cinibulk, Michael K AU - Mathur, Tarun AU - Gruber, Mark R. AU - Smialek, J. T1 - Thermal and Oxidation Response of UHTC Leading Edge Samples Exposed to Simulated Hypersonic Flight Conditions. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2013/03// VL - 96 IS - 3 M3 - Article SP - 907 EP - 915 PB - Wiley-Blackwell SN - 00027820 AB - Sharp leading edge (LE) samples of UHTC (20 vol% SiC- HfB2) and SiC were exposed to simulated hypersonic flight conditions using a direct-connect scramjet rig and their thermal and oxidation responses measured. The measured back-wall temperatures and scale thicknesses were significantly smaller than might be expected from stagnation temperatures at the LE. Furthermore, the scale that formed around the LE was more uniform than expected from the steep drop in cold wall heat flux with distance from the tip. These results were interpreted and rationalized using physics-based models. An aerothermal model in combination with an oxidation model accounted for the observed scale thicknesses at the tip and their slight variation with distance. The scale thicknesses were similar to values reported for exposures in furnaces at temperatures calculated for the tip, but less than those reported in arc jet tests. The formation of hafnon (HfSiO4) and the absence of external glassy layer and of silica in the outer portions of the oxide region are unique to scramjet tested samples, presumably due to the high fluid flow (high shear and evaporation) rates. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEADING edges (Aerodynamics) KW - HAFNIUM KW - SILICON carbide KW - HYPERSONIC aerodynamics KW - OXIDATION KW - EVAPORATION (Chemistry) KW - FLUID mechanics N1 - Accession Number: 86146034; Parthasarathy, Triplicane A. 1,2 Petry, Melvin D. 1,2 Cinibulk, Michael K 1 Mathur, Tarun 3 Gruber, Mark R. 4 Smialek, J.; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB 2: UES, Inc. 3: ISSI 4: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB; Source Info: Mar2013, Vol. 96 Issue 3, p907; Subject Term: LEADING edges (Aerodynamics); Subject Term: HAFNIUM; Subject Term: SILICON carbide; Subject Term: HYPERSONIC aerodynamics; Subject Term: OXIDATION; Subject Term: EVAPORATION (Chemistry); Subject Term: FLUID mechanics; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 9p; Illustrations: 1 Diagram, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1111/jace.12180 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86146034&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Knezevic, Marko AU - Lebensohn, Ricardo A. AU - Cazacu, Oana AU - Revil-Baudard, Benoit AU - Proust, Gwénaëlle AU - Vogel, Sven C. AU - Nixon, Michael E. T1 - Modeling bending of α-titanium with embedded polycrystal plasticity in implicit finite elements JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2013/03// VL - 564 M3 - Article SP - 116 EP - 126 SN - 09215093 AB - Abstract: An accurate description of the mechanical response of α-titanium requires consideration of mechanical anisotropy. In this work we adapt a polycrystal self-consistent model embedded in finite elements to simulate deformation of textured α-titanium under quasi-static conditions at room temperature. Monotonic tensile and compressive macroscopic stress–strain curves, electron backscattered diffraction and neutron diffraction data are used to calibrate and validate the model. We show that the model captures with great accuracy the anisotropic strain hardening and texture evolution in the material. Comparisons between predictions and experimental data allow us to elucidate the role that the different plastic deformation mechanisms play in determining microstructure and texture evolution. The polycrystal model, embedded in an implicit finite element code, is then used to simulate geometrical changes in bending experiments of α-titanium bars. These predictions, together with results of a macroscopic orthotropic elasto-plastic model that accounts for evolving anisotropy, are compared with the experiments. Both models accurately capture the experimentally observed upward shift of the neutral axis as well as the rigidity of the material response along hard-to-deform crystallographic direction. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM KW - BENDING (Metalwork) KW - POLYCRYSTALS KW - PLASTICITY KW - FINITE element method KW - METALS -- Mechanical properties KW - MATHEMATICAL models KW - Crystal plasticity KW - EBSD KW - Finite element method KW - Texture KW - Titanium alloys KW - Twinning N1 - Accession Number: 85174772; Knezevic, Marko 1; Email Address: knezevic@lanl.gov Lebensohn, Ricardo A. 1 Cazacu, Oana 2 Revil-Baudard, Benoit 2 Proust, Gwénaëlle 3 Vogel, Sven C. 4 Nixon, Michael E. 5; Affiliation: 1: Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA 2: Department of Mechanical and Aerospace Engineering, University of Florida, REEF, 1350 N Poquito Road, Shalimar, FL 32539, USA 3: School of Civil Engineering, University of Sydney, NSW 2006, Australia 4: Los Alamos Neutron Science Center, Los Alamos National Laboratory, Los Alamos, NM, USA 5: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, USA; Source Info: Mar2013, Vol. 564, p116; Subject Term: TITANIUM; Subject Term: BENDING (Metalwork); Subject Term: POLYCRYSTALS; Subject Term: PLASTICITY; Subject Term: FINITE element method; Subject Term: METALS -- Mechanical properties; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: Crystal plasticity; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: Finite element method; Author-Supplied Keyword: Texture; Author-Supplied Keyword: Titanium alloys; Author-Supplied Keyword: Twinning; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.msea.2012.11.037 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85174772&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Look, David C. AU - Leedy, Kevin D. AU - Kiefer, Arnold AU - Claflin, Bruce AU - Naho Itagaki AU - Koichi Matsushima AU - Iping Surhariadi T1 - Model for thickness dependence of mobility and concentration in highly conductive zinc oxide. JO - Optical Engineering JF - Optical Engineering Y1 - 2013/03// VL - 52 IS - 3 M3 - Article SP - 1 EP - 5 SN - 00913286 AB - The dependences of the 294 and 10 K mobility µ and volume carrier concentration n on thickness (d = 25 to 147 nm) are examined in aluminum-doped zinc oxide (AZO). Two AZO layers are grown at each thickness, one with and one without a 20-nm-thick ZnON buffer layer. Plots of the 10 K sheet concentration ns versus d for buffered (B) and unbuffered (UB) samples give straight lines of similar slope, n = 8.36 x 1020 and 8.32 x 1020 cm-3, but different x-axis intercepts, δd = -4 and +13 nm, respectively. Plots of ns versus d at 294 K produce substantially the same results. Plots of µ versus d can be well fitted with the equation µ(d) = µ(∞)/[1 + d*/(d - δd)], where d* is the thickness for which µ(∞) is reduced by a factor 2. For the B and UB samples, d* = 7 and 23 nm, respectively, showing the efficacy of the ZnON buffer. Finally, from n and µ(∞) we can use degenerate electron scattering theory to calculate bulk donor and acceptor concentrations of 1.23 x 1021 cm-3 and 1.95 x 1020 cm-3, respectively, and Drude theory to predict a plasmonic resonance at 1.34 µm. The latter is confirmed by reflectance measurements. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide KW - RESEARCH KW - ALUMINUM -- Research KW - MULTILAYERS KW - ELECTRON scattering KW - ELECTRON donor-acceptor complexes -- Research KW - DRUDE theory KW - SURFACE plasmon resonance KW - Hall effect KW - mobility KW - reflectance KW - thickness dependence KW - zinc oxide N1 - Accession Number: 92987112; Look, David C. 1,2,3; Email Address: david.look@wright.edu Leedy, Kevin D. 3 Kiefer, Arnold 3 Claflin, Bruce 3 Naho Itagaki 4 Koichi Matsushima 4 Iping Surhariadi 4; Affiliation: 1: Wright State University, Semiconductor Research Center, Dayton, Ohio 2: Aerospace Division, Wyle Laboratories, Dayton, Ohio 3: Sensors Directorate, Air Force Research Laboratory, Dayton, Ohio 4: Kyushu University, Department of Information Science and Electrical Engineering, Fukuoka, Japan; Source Info: Mar2013, Vol. 52 Issue 3, p1; Subject Term: ZINC oxide; Subject Term: RESEARCH; Subject Term: ALUMINUM -- Research; Subject Term: MULTILAYERS; Subject Term: ELECTRON scattering; Subject Term: ELECTRON donor-acceptor complexes -- Research; Subject Term: DRUDE theory; Subject Term: SURFACE plasmon resonance; Author-Supplied Keyword: Hall effect; Author-Supplied Keyword: mobility; Author-Supplied Keyword: reflectance; Author-Supplied Keyword: thickness dependence; Author-Supplied Keyword: zinc oxide; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1117/1.OE.52.3.033801 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92987112&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Quarrie, Lindsay O’Brien T1 - The effects of atomic rubidium vapor on the performance of optical windows in Diode Pumped Alkali Lasers (DPALs) JO - Optical Materials JF - Optical Materials Y1 - 2013/03// VL - 35 IS - 5 M3 - Article SP - 843 EP - 851 SN - 09253467 AB - Abstract: Diode Pumped Alkali Lasers (DPALs) suffers from damage to its optical windows due to atomic alkali exposure. DPALs are of great interest since they can combine multiple lasers to achieve higher laser output power, scalable to megawatts, with very high quantum efficiency. However before scaling to higher laser output beam power, damage to the optical windows from atomic alkali exposure in the gain medium has to be addressed. A DPAL emulator chamber was constructed for the purpose of evaluating different optical windows in a representative hot alkali rich environment typical of a DPAL gain cell. Sample optical windows of fused silica, alumina, magnesium fluoride and calcium fluoride were exposed in the DPAL emulator in order to qualitatively and quantitatively demonstrate and assess the damaging effects of the atomic rubidium vapor on the optical windows. Methodologies to examine the damage were developed for comparing exposed and unexposed optical windows. We found that damage to the optical windows due to the atomic rubidium can be quantified by means of changes in laser energy transmission through the optical window after rubidium exposure. [Copyright &y& Elsevier] AB - Copyright of Optical Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RUBIDIUM KW - PERFORMANCE KW - SEMICONDUCTOR diodes KW - QUANTUM efficiency (Physics) KW - MAGNESIUM fluoride KW - CALCIUM fluoride KW - Alkali laser KW - Alkali resistant KW - DPAL KW - Optical materials KW - Optical transmission KW - Thin film N1 - Accession Number: 85814466; Quarrie, Lindsay O’Brien 1,2; Email Address: lindsay.o.quarrie@gmail.com; Affiliation: 1: New Mexico Institute of Mining and Technology, Department of Materials Engineering, 801 LeRoy Place, Socorro, NM 87801, United States 2: Air Force Research Laboratory, AFRL/RDLC Laser CoE, 3550 Aberdeen Avenue SE, Kirtland AFB, NM 87117-5776, United States; Source Info: Mar2013, Vol. 35 Issue 5, p843; Subject Term: RUBIDIUM; Subject Term: PERFORMANCE; Subject Term: SEMICONDUCTOR diodes; Subject Term: QUANTUM efficiency (Physics); Subject Term: MAGNESIUM fluoride; Subject Term: CALCIUM fluoride; Author-Supplied Keyword: Alkali laser; Author-Supplied Keyword: Alkali resistant; Author-Supplied Keyword: DPAL; Author-Supplied Keyword: Optical materials; Author-Supplied Keyword: Optical transmission; Author-Supplied Keyword: Thin film; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.optmat.2012.10.040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85814466&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Garmann, Daniel J. AU - Visbal, Miguel R. AU - Orkwis, Paul D. T1 - Three-dimensional flow structure and aerodynamic loading on a revolving wing. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2013/03// VL - 25 IS - 3 M3 - Article SP - 034101 EP - 034101-27 PB - American Institute of Physics SN - 10706631 AB - A numerical study is conducted to examine the vortex structure and aerodynamic loading on a revolving wing in quiescent flow. A high-fidelity, implicit large eddy simulation technique is employed to simulate a revolving wing configuration consisting of a single, aspect-ratio-one rectangular plate extended out a distance of half a chord from the rotational axis at a fixed angle relative to the axis. Shortly after the onset of the motion, the rotating wing generates a coherent vortex system along the leading-edge. This vortex system remains attached throughout the motion for the range of Reynolds numbers explored, despite the unsteadiness and vortex breakdown observed at higher Reynolds numbers. The average and instantaneous wing loading also increases with Reynolds number. At a fixed Reynolds number, the attachment of the leading-edge vortex is also shown to be insensitive to the geometric angle of the wing. Additionally, the flow structure and forcing generated by a purely translating wing is investigated and compared with that of the revolving wing. Similar features are present at the inception of the motion, however, the two flows evolve very differently for the remainder of the maneuver. Comparisons of the revolving wing simulations with recent experimental particle image velocimetry (PIV) measurements using a new PIV-like data reduction technique applied to the computational solution show very favorable agreement. The success of the data reduction technique demonstrates the need to compare computations and experiments of differing resolutions using similar data-analysis techniques. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUX-line lattice KW - AERODYNAMICS KW - REYNOLDS number KW - PARTICLE image velocimetry KW - MILITARY research KW - DELTA wing airplanes N1 - Accession Number: 86447025; Garmann, Daniel J. 1 Visbal, Miguel R. 1 Orkwis, Paul D. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 2: University of Cincinnati, Cincinnati, Ohio 45221,; Source Info: Mar2013, Vol. 25 Issue 3, p034101; Subject Term: FLUX-line lattice; Subject Term: AERODYNAMICS; Subject Term: REYNOLDS number; Subject Term: PARTICLE image velocimetry; Subject Term: MILITARY research; Subject Term: DELTA wing airplanes; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.4794753 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86447025&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Franzi, Matthew AU - Gilgenbach, Ronald AU - Lau, Y. Y. AU - Hoff, Brad AU - Greening, Geoff AU - Zhang, Peng T1 - Passive mode control in the recirculating planar magnetron. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2013/03// VL - 20 IS - 3 M3 - Article SP - 033108 EP - 033108-8 PB - American Institute of Physics SN - 1070664X AB - Preliminary experiments of the recirculating planar magnetron microwave source have demonstrated that the device oscillates but is susceptible to intense mode competition due, in part, to poor coupling of RF fields between the two planar oscillators. A novel method of improving the cross-oscillator coupling has been simulated in the periodically slotted mode control cathode (MCC). The MCC, as opposed to a solid conductor, is designed to electromagnetically couple both planar oscillators by allowing for the propagation of RF fields and electrons through resonantly tuned gaps in the cathode. Using the MCC, a 12-cavity anode block with a simulated 1 GHz and 0.26 c phase velocity (where c is the speed of light) was able to achieve in-phase oscillations between the two sides of the device in as little as 30 ns. An analytic study of the modified resonant structure predicts the MCC's ability to direct the RF fields to provide tunable mode separation in the recirculating planar magnetron. The self-consistent solution is presented for both the degenerate even (in phase) and odd (180° out of phase) modes that exist due to the twofold symmetry of the planar magnetrons. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - MICROWAVES KW - ELECTROMAGNETISM KW - PHASE velocity KW - GEOMETRY N1 - Accession Number: 86447052; Franzi, Matthew 1 Gilgenbach, Ronald 1 Lau, Y. Y. 1 Hoff, Brad 2 Greening, Geoff 1 Zhang, Peng 1; Affiliation: 1: Plasma, Pulsed Power, and Microwave Laboratory, Nuclear Engineering and Radiological Sciences Department, University of Michigan, Ann Arbor, Michigan 48109-2104, 2: Air Force Research Laboratory, Kirtland AFB, New Mexico 87117,; Source Info: Mar2013, Vol. 20 Issue 3, p033108; Subject Term: MAGNETRONS; Subject Term: MICROWAVES; Subject Term: ELECTROMAGNETISM; Subject Term: PHASE velocity; Subject Term: GEOMETRY; Number of Pages: 1p; Illustrations: 1 Black and White Photograph, 3 Diagrams, 1 Chart, 6 Graphs; Document Type: Article L3 - 10.1063/1.4794967 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86447052&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Oswald, Benjamin B. AU - Schuren, Jay C. AU - Pagan, Darren C. AU - Miller, Matthew P. T1 - An experimental system for high temperature X-ray diffraction studies with in situ mechanical loading. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2013/03// VL - 84 IS - 3 M3 - Article SP - 033902 EP - 033902-12 PB - American Institute of Physics SN - 00346748 AB - An experimental system with in situ thermomechanical loading has been developed to enable high energy synchrotron x-ray diffraction studies of crystalline materials. The system applies and maintains loads of up to 2250 N in uniaxial tension or compression at a frequency of up to 100 Hz. The furnace heats the specimen uniformly up to a maximum temperature of 1200 °C in a variety of atmospheres (oxidizing, inert, reducing) that, combined with in situ mechanical loading, can be used to mimic processing and operating conditions of engineering components. The loaded specimen is reoriented with respect to the incident beam of x-rays using two rotational axes to increase the number of crystal orientations interrogated. The system was used at the Cornell High Energy Synchrotron Source to conduct experiments on single crystal silicon and polycrystalline Low Solvus High Refractory nickel-based superalloy. The data from these experiments provide new insights into how stresses evolve at the crystal scale during thermomechanical loading and complement the development of high-fidelity material models. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - X-ray diffraction KW - DIFFRACTION of electromagnetic waves KW - SYNCHROTRONS KW - POLYCRYSTALLINE semiconductors KW - SEMICONDUCTORS N1 - Accession Number: 86446722; Oswald, Benjamin B. 1 Schuren, Jay C. 2 Pagan, Darren C. 1 Miller, Matthew P. 1; Affiliation: 1: Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, New York 14853, 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: Mar2013, Vol. 84 Issue 3, p033902; Subject Term: X-ray diffraction; Subject Term: DIFFRACTION of electromagnetic waves; Subject Term: SYNCHROTRONS; Subject Term: POLYCRYSTALLINE semiconductors; Subject Term: SEMICONDUCTORS; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 1p; Illustrations: 1 Color Photograph, 11 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.4793230 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86446722&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Molek, Christopher D. AU - Michael Lindsay, C. AU - Fajardo, Mario E. T1 - A combined matrix isolation spectroscopy and cryosolid positron moderation apparatus. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2013/03// VL - 84 IS - 3 M3 - Article SP - 035106 EP - 035106-11 PB - American Institute of Physics SN - 00346748 AB - We describe the design, construction, and operation of a novel apparatus for investigating efficiency improvements in thin-film cryogenic solid positron moderators. We report results from solid neon, argon, krypton, and xenon positron moderators which illustrate the capabilities and limitations of our apparatus. We integrate a matrix isolation spectroscopy diagnostic within a reflection-geometry positron moderation system. We report the optical thickness, impurity content, and impurity trapping site structures within our moderators determined from infrared absorption spectra. We use a retarding potential analyzer to modulate the flow of slow positrons, and report positron currents vs. retarding potential for the different moderators. We identify vacuum ultraviolet emissions from irradiated Ne moderators as the source of spurious signals in our channel electron multiplier slow positron detection channel. Our design is also unusual in that it employs a sealed radioactive Na-22 positron source which can be translated relative to, and isolated from, the cryogenic moderator deposition substrate. This allows us to separate the influences on moderator efficiency of surface contamination by residual gases from those of accumulated radiation damage. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATRIX isolation spectroscopy KW - SPECTROMETRY KW - SPECTRUM analysis KW - POSITRONS KW - CRYOGENICS KW - HOLES (Electron deficiencies) KW - QUANTUM wells N1 - Accession Number: 86446714; Molek, Christopher D. 1 Michael Lindsay, C. 1 Fajardo, Mario E. 1; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Ordnance Division, Energetic Materials Branch, AFRL/RWME, 2306 Perimeter Road, Eglin AFB, Florida 32542-5910,; Source Info: Mar2013, Vol. 84 Issue 3, p035106; Subject Term: MATRIX isolation spectroscopy; Subject Term: SPECTROMETRY; Subject Term: SPECTRUM analysis; Subject Term: POSITRONS; Subject Term: CRYOGENICS; Subject Term: HOLES (Electron deficiencies); Subject Term: QUANTUM wells; Number of Pages: 1p; Illustrations: 3 Diagrams, 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1063/1.4795555 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86446714&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pilchak, Adam L. T1 - Fatigue crack growth rates in alpha titanium: Faceted vs. striation growth JO - Scripta Materialia JF - Scripta Materialia Y1 - 2013/03// VL - 68 IS - 5 M3 - Article SP - 277 EP - 280 SN - 13596462 AB - Cyclic and dwell fatigue crack growth (FCG) rates were measured in single-phase Ti–7Al (wt.%) directly from fractured samples. A quantitative method using stereo pairs was used to eliminate the uncertainty associated with these measurements on two-dimensional projections of the three-dimensional fracture features. The results show that FCG rates increased by up to two orders of magnitude under dwell fatigue loading conditions when propagating by the faceted mechanism compared to the classical striation growth mechanism. [ABSTRACT FROM AUTHOR] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE crack growth KW - TITANIUM-aluminum alloys KW - QUANTITATIVE research KW - FRACTURE mechanics KW - CRYSTAL growth KW - MATERIALS science KW - Crack growth KW - Dwell KW - Fatigue KW - Fractography KW - Titanium N1 - Accession Number: 84575338; Pilchak, Adam L. 1; Email Address: adam.pilchak@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL, RXCM, WPAFB, OH 45433, USA; Source Info: Mar2013, Vol. 68 Issue 5, p277; Subject Term: FATIGUE crack growth; Subject Term: TITANIUM-aluminum alloys; Subject Term: QUANTITATIVE research; Subject Term: FRACTURE mechanics; Subject Term: CRYSTAL growth; Subject Term: MATERIALS science; Author-Supplied Keyword: Crack growth; Author-Supplied Keyword: Dwell; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Fractography; Author-Supplied Keyword: Titanium; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2012.10.041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84575338&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Garza, Ricardo AU - Hill, Raymond R AU - Mattioda, Daniel D T1 - Using simulation to analyze the maintenance architecture for a USAF weapon system. JO - Simulation JF - Simulation Y1 - 2013/03// VL - 89 IS - 3 M3 - Article SP - 294 EP - 305 SN - 00375497 AB - The United States Air Force (USAF) is investigating the use of three levels of repair with its aircraft maintenance managerial structure. This study provides an initial look at the effect of maintenance resource collaboration among maintenance locations and the use of a centralized repair facility focusing on a critical line replacement unit for a major USAF weapon system. Maintenance data for prior year maintenance experiences are collected, fit into appropriate probability distributions and implemented in a discrete event simulation model. This model is then used within an experimental design framework to examine the potential impact of organizational changes to the USAF hierarchical maintenance structure. [ABSTRACT FROM AUTHOR] AB - Copyright of Simulation is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER simulation KW - RESEARCH KW - WEAPONS systems KW - MILITARY airplanes -- Maintenance & repair KW - EXPERIMENTAL design KW - MAINTENANCE & repair KW - discrete-event simulation KW - maintenance processes KW - simulation-based experimental design KW - weapon systems analysis KW - UNITED States. Air Force N1 - Accession Number: 86692853; Garza, Ricardo 1 Hill, Raymond R 2 Mattioda, Daniel D 2; Affiliation: 1: Logistics Management Agency, AL, USA 2: United States Air Force Institute of Technology, OH, USA; Source Info: Mar2013, Vol. 89 Issue 3, p294; Subject Term: COMPUTER simulation; Subject Term: RESEARCH; Subject Term: WEAPONS systems; Subject Term: MILITARY airplanes -- Maintenance & repair; Subject Term: EXPERIMENTAL design; Subject Term: MAINTENANCE & repair; Author-Supplied Keyword: discrete-event simulation; Author-Supplied Keyword: maintenance processes; Author-Supplied Keyword: simulation-based experimental design; Author-Supplied Keyword: weapon systems analysis; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 12p; Document Type: Article; Full Text Word Count: 5886 L3 - 10.1177/0037549712461382 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86692853&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dodson, J.C. AU - Inman, D.J. T1 - Thermal sensitivity of Lamb waves for structural health monitoring applications JO - Ultrasonics JF - Ultrasonics Y1 - 2013/03// VL - 53 IS - 3 M3 - Article SP - 677 EP - 685 SN - 0041624X AB - Abstract: One of the drawbacks of the current Lamb wave structural health monitoring methods are the false positives due to changing environmental conditions such as temperature. To create an environmental insensitive damage detection scheme, the physics of thermal effects on Lamb waves must be understood. Dispersion and thermal sensitivity curves for an isotropic plate with thermal stress and thermally varying elastic modulus are presented. The thermal sensitivity of dispersion curves is analytically developed and validated by experimental measurements. The group velocity thermal sensitivity highlights temperature insensitive features at two critical frequencies. The thermal sensitivity gives us insight to how temperature affects Lamb wave speeds in different frequency ranges and will help those developing structural health monitoring algorithms. [Copyright &y& Elsevier] AB - Copyright of Ultrasonics is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAMB waves KW - SENSITIVITY analysis KW - THERMODYNAMICS KW - STRUCTURAL health monitoring KW - TEMPERATURE effect KW - DISPERSION KW - MODULUS of elasticity KW - RADIO frequency KW - Guided waves KW - Lamb waves KW - Structural health monitoring KW - Thermal variation N1 - Accession Number: 85583158; Dodson, J.C. 1; Email Address: jacob.dodson@eglin.af.mil Inman, D.J. 2; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Fuzes Branch, 306 W. Eglin Blvd., Bldg. 432, Eglin Air Force Base, FL 32542-5430, United States 2: Department of Aerospace Engineering, University of Michigan, Ann Arbor, MI 48109, United States; Source Info: Mar2013, Vol. 53 Issue 3, p677; Subject Term: LAMB waves; Subject Term: SENSITIVITY analysis; Subject Term: THERMODYNAMICS; Subject Term: STRUCTURAL health monitoring; Subject Term: TEMPERATURE effect; Subject Term: DISPERSION; Subject Term: MODULUS of elasticity; Subject Term: RADIO frequency; Author-Supplied Keyword: Guided waves; Author-Supplied Keyword: Lamb waves; Author-Supplied Keyword: Structural health monitoring; Author-Supplied Keyword: Thermal variation; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ultras.2012.10.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85583158&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Karrels, Daniel R. AU - Peterson, Gilbert L. AU - Mullins, Barry E. T1 - Large-scale cooperative task distribution on peer-to-peer networks. JO - Web Intelligence & Agent Systems JF - Web Intelligence & Agent Systems Y1 - 2013/03// VL - 11 IS - 1 M3 - Article SP - 67 EP - 79 PB - IOS Press SN - 15701263 AB - Large-scale systems are part of a growing trend in distributed computing, and coordinating control of them is an increasing challenge. This paper presents a cooperative agent system that scales to one million or more nodes in which agents form coalitions to complete global task objectives. This approach uses the large-scale Command and Control (C2) capabilities of the Resource Clustered Chord (RC-Chord) Hierarchical Peer-to-Peer (HP2P) design. Tasks are submitted that require access to processing, data, or hardware resources, and a distributed agent search is performed to recruit agents to satisfy the distributed task. This approach differs from others by incorporating design elements to accommodate large-scale systems into the resource location algorithm. Peersim simulations demonstrate that the distributed coalition formation algorithm is as effective as an omnipotent central algorithm in a one million agent system. [ABSTRACT FROM AUTHOR] AB - Copyright of Web Intelligence & Agent Systems is the property of IOS Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PEER-to-peer architecture (Computer networks) KW - MULTIAGENT systems KW - ELECTRONIC data processing KW - TASK performance KW - SYSTEMS design KW - ALGORITHMS KW - COMMAND & control systems KW - command and control KW - Distributed multi-agent system KW - hierarchical peer to peer KW - large-scale N1 - Accession Number: 87071229; Karrels, Daniel R. 1 Peterson, Gilbert L. 2 Mullins, Barry E. 2; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, 3550 Aberdeen Ave SE, Kirtland AFB, Albuquerque, NM, USA 2: Department of Electrical and Computer Engineering, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH, USA; Source Info: Mar2013, Vol. 11 Issue 1, p67; Subject Term: PEER-to-peer architecture (Computer networks); Subject Term: MULTIAGENT systems; Subject Term: ELECTRONIC data processing; Subject Term: TASK performance; Subject Term: SYSTEMS design; Subject Term: ALGORITHMS; Subject Term: COMMAND & control systems; Author-Supplied Keyword: command and control; Author-Supplied Keyword: Distributed multi-agent system; Author-Supplied Keyword: hierarchical peer to peer; Author-Supplied Keyword: large-scale; NAICS/Industry Codes: 518210 Data Processing, Hosting, and Related Services; Number of Pages: 13p; Illustrations: 1 Diagram, 3 Charts, 7 Graphs; Document Type: Article L3 - 10.3233/WIA-130263 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87071229&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Park, Kyoungweon AU - Drummy, Lawrence F. AU - Wadams, Robert C. AU - Koerner, Hilmar AU - Nepal, Dhriti AU - Fabris, Laura AU - Vaia, Richard A. T1 - Growth Mechanism of GoldNanorods. JO - Chemistry of Materials JF - Chemistry of Materials Y1 - 2013/02/26/ VL - 25 IS - 4 M3 - Article SP - 555 EP - 563 SN - 08974756 AB - Gold nanorods (Au NRs) are the archetype of a nanoantenna,enablingthe directional capture, routing, and concentration of electromagneticfields at the nanoscale. Solution-based synthesis methods afford advantagesrelative to top-down fabrication but are challenged by insufficientprecision of structure, presence of byproducts, limited tunabilityof architecture, and device integration. This is due in part to aninadequate understanding of the early stages of Au NR growth. Here,using phase transfer via ligand exchange with mono-thiolated polystyrene,we experimentally demonstrate the complete evolution of seed-mediatedAu NR growth in hexadecyltrimethylammonium bromide (CTAB) solution.Au NR size and shape progress from slender spherocylinders at shortreaction times to rods with a dumbbell profile, flattened end facets,and octagonal prismatic structures at later stages. These evolve froma single mechanism and reflect the majority of reported Au NR morphologies,albeit reflecting different stages. Additionally, the fraction ofnonrod impurities in a reaction is related to the initial distributionof the structure of the seed particles. Overall, the observationsof early and intermediate stage growth are consistent with the formationof a surfactant bilayer on different crystal facets at different growthstages due to a fine balance between kinetic and thermodynamic factors. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemistry of Materials is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANORODS KW - CRYSTAL growth KW - GOLD nanoparticles -- Synthesis KW - OPTICAL antennas KW - ELECTROMAGNETIC fields KW - SOLUTION (Chemistry) KW - POLYSTYRENE KW - AMMONIUM bromide N1 - Accession Number: 85800466; Park, Kyoungweon 1 Drummy, Lawrence F. 1 Wadams, Robert C. 1 Koerner, Hilmar 1 Nepal, Dhriti 1 Fabris, Laura 1 Vaia, Richard A. 1; Affiliation: 1: †Materials and ManufacturingDirectorate, Air Force Research Laboratory, Wright-PattersonAFB, Ohio 45433-7702, United States; Source Info: Feb2013, Vol. 25 Issue 4, p555; Subject Term: NANORODS; Subject Term: CRYSTAL growth; Subject Term: GOLD nanoparticles -- Synthesis; Subject Term: OPTICAL antennas; Subject Term: ELECTROMAGNETIC fields; Subject Term: SOLUTION (Chemistry); Subject Term: POLYSTYRENE; Subject Term: AMMONIUM bromide; NAICS/Industry Codes: 326140 Polystyrene Foam Product Manufacturing; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85800466&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Muratore, C. AU - Varshney, V. AU - Gengler, J. J. AU - Hu, J. J. AU - Bultman, J. E. AU - Smith, T. M. AU - Shamberger, P. J. AU - Qiu, B. AU - Ruan, X. AU - Roy, A. K. AU - Voevodin, A. A. T1 - Cross-plane thermal properties of transition metal dichalcogenides. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/02/25/ VL - 102 IS - 8 M3 - Article SP - 081604 PB - American Institute of Physics SN - 00036951 AB - In this work, we explore the thermal properties of hexagonal transition metal dichalcogenide compounds with different average atomic masses but equivalent microstructures. Thermal conductivity values of sputtered thin films were compared to bulk crystals. The comparison revealed a >10 fold reduction in thin film thermal conductivity. Structural analysis of the films revealed a turbostratic structure with domain sizes on the order of 5-10 nm. Estimates of phonon scattering lengths at domain boundaries based on computationally derived group velocities were consistent with the observed film microstructure, and accounted for the reduction in thermal conductivity compared to values for bulk crystals. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL properties KW - THIN films KW - ATOMIC layer deposition KW - CRYSTAL structure KW - PHONONS -- Scattering KW - ELECTRIC conductivity N1 - Accession Number: 85846603; Muratore, C. 1,2 Varshney, V. 2,3 Gengler, J. J. 2,4 Hu, J. J. 2,5 Bultman, J. E. 2,5 Smith, T. M. 6 Shamberger, P. J. 2 Qiu, B. 7 Ruan, X. 7 Roy, A. K. 2 Voevodin, A. A. 2; Affiliation: 1: Department of Chemical and Materials Engineering, University of Dayton, Dayton, Ohio 45469, 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 3: Universal Technology Corporation, Dayton, Ohio 45432, 4: Spectral Energies LLC, Dayton, Ohio 45431, 5: University of Dayton Research Institute, Dayton, Ohio 45469, 6: Department of Materials Science and Engineering, Ohio State University, Columbus, Ohio 43210, 7: Department of Mechanical Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907,; Source Info: 2/25/2013, Vol. 102 Issue 8, p081604; Subject Term: THERMAL properties; Subject Term: THIN films; Subject Term: ATOMIC layer deposition; Subject Term: CRYSTAL structure; Subject Term: PHONONS -- Scattering; Subject Term: ELECTRIC conductivity; Number of Pages: 4p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.4793203 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85846603&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - dos Reis, R. AU - Ophus, C. AU - Jimenez, J. AU - Snure, M. AU - Gérard, B. AU - Liliental-Weber, Z. T1 - Direct atomic imaging of antiphase boundaries and orthotwins in orientation-patterned GaAs. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/02/25/ VL - 102 IS - 8 M3 - Article SP - 081905 PB - American Institute of Physics SN - 00036951 AB - We use transmission electron microscopy to study orientation-patterned GaAs layers very attractive for applications in terahertz and infrared frequency conversion devices. We observe regularly distributed inversion domains separated by inversion boundaries, together with undesirable microtwin defects originating at these boundaries. Atomic resolution aberration-corrected scanning transmission electron microscopy allowed us to resolve the GaAs dumbbells leading to a direct determination of the growth polarity of particular domains and determination of the alternating Ga-Ga and As-As bonds at the {110}-type antiphase boundary planes. We also determined observed microtwins as rotation twins called orthotwins, the defect that can cause optical losses. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMAGING systems KW - TRANSMISSION electron microscopy KW - SUBMILLIMETER wave imaging KW - OPTICAL losses KW - POLARITY (Chemistry) N1 - Accession Number: 85846628; dos Reis, R. 1 Ophus, C. 2 Jimenez, J. 3 Snure, M. 4 Gérard, B. 5 Liliental-Weber, Z. 1; Affiliation: 1: Materials Sciences Division, LBNL, Berkeley, California 94720, 2: National Center for Electron Microscopy, LBNL, Berkeley, California 94720, 3: Física de la Matéria Condensada, Universidad de Valladolid, Valladolid, 4: Air Force Research Laboratory, Sensors Directorate, Wright Patterson AFB, Ohio 45433 5: III-V Lab. 1, avenue Augustine Fresnel, 91767 Palaiseau Cedex,; Source Info: 2/25/2013, Vol. 102 Issue 8, p081905; Subject Term: IMAGING systems; Subject Term: TRANSMISSION electron microscopy; Subject Term: SUBMILLIMETER wave imaging; Subject Term: OPTICAL losses; Subject Term: POLARITY (Chemistry); NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; Number of Pages: 4p; Illustrations: 3 Diagrams; Document Type: Article L3 - 10.1063/1.4793651 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85846628&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stone, D.S. AU - Harbin, S. AU - Mohseni, H. AU - Mogonye, J.-E. AU - Scharf, T.W. AU - Muratore, C. AU - Voevodin, A.A. AU - Martini, A. AU - Aouadi, S.M. T1 - Lubricious silver tantalate films for extreme temperature applications JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2013/02/25/ VL - 217 M3 - Article SP - 140 EP - 146 SN - 02578972 AB - Abstract: Silver tantalate was investigated as a potential lubricious material for moving assemblies in high temperature tribological applications. Three different approaches were explored for the creation of such materials on Inconel substrates: (1) powders produced using a solid state which were burnished on the surface; (2) monolithic silver tantalate thin films deposited by magnetron sputtering; and, (3) an adaptive tantalum nitride/silver nanocomposite sputter-deposited coating that forms a lubricious silver tantalate oxide on its surface when operated at elevated temperatures. Dry sliding wear tests of the coatings against Si3N4 counterfaces revealed friction coefficients in the 0.06–0.15 range at T ~750°C. Reduced friction coefficients were found in nanocomposite materials that contained primarily a AgTaO3 phase with a small amount of segregated Ag phase, as suggested by structural characterization using X-ray diffraction. Furthermore, cross-sectional transmission electron microscopy techniques determined that the reduced coefficient of friction at T ~750°C was primarily the result of the formation of a lubricious AgTaO3 phase that reconstructs during the wear process into a mechanically mixed layer of AgTaO3, Ta2O5, and Ag nanoparticles. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TANTALATES KW - SILVER compounds KW - TEMPERATURE effect KW - LUBRICATION & lubricants KW - HEAT resistant materials KW - TRIBOLOGY KW - INCONEL KW - SUBSTRATES (Materials science) KW - Chameleon coating KW - Friction KW - Silver tantalate KW - Tantalum nitride KW - Tribology N1 - Accession Number: 85418356; Stone, D.S. 1 Harbin, S. 1 Mohseni, H. 2 Mogonye, J.-E. 2 Scharf, T.W. 2 Muratore, C. 3 Voevodin, A.A. 3 Martini, A. 4 Aouadi, S.M. 1; Email Address: saouadi@physics.siu.edu; Affiliation: 1: Department of Physics, Southern Illinois University, Carbondale, IL 62901, USA 2: Department of Materials Science and Engineering, University of North Texas, Denton, TX 76207, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 4: School of Engineering, University of California Merced, Merced, CA 95343, USA; Source Info: Feb2013, Vol. 217, p140; Subject Term: TANTALATES; Subject Term: SILVER compounds; Subject Term: TEMPERATURE effect; Subject Term: LUBRICATION & lubricants; Subject Term: HEAT resistant materials; Subject Term: TRIBOLOGY; Subject Term: INCONEL; Subject Term: SUBSTRATES (Materials science); Author-Supplied Keyword: Chameleon coating; Author-Supplied Keyword: Friction; Author-Supplied Keyword: Silver tantalate; Author-Supplied Keyword: Tantalum nitride; Author-Supplied Keyword: Tribology; NAICS/Industry Codes: 324191 Petroleum Lubricating Oil and Grease Manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.surfcoat.2012.12.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85418356&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nabiul Afrooz, A. R. M. AU - Khan, Iftheker A. AU - Hussain, Saber M. AU - Saleh, Navid B. T1 - Mechanistic Heteroaggregation of Gold Nanoparticles in a Wide Range of Solution Chemistry. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2013/02/19/ VL - 47 IS - 4 M3 - Article SP - 1853 EP - 1860 SN - 0013936X AB - Heteroaggregation behavior of gold nanospheres (AuNS) in presence of pluronic acid (PA) modified single-walled carbon nanotubes (PA-SWNTs) was systematically studied for a wide range of mono- and divalent (NaCl and CaCl2) electrolyte conditions. Homoaggregation rates of AuNS were also determined to delineate heteroaggregation mechanisms. Time resolved dynamic light scattering (DLS) was employed to monitor aggregation. The homoaggregation of AuNS showed classical Derjaguin-Landau-Verwey-Overbeek (DLVO) type behavior with defined reaction limited (RLCA) and diffusion limited (DLCA) aggregation regimes. PA-SWNTs homoaggregation on the one hand showed no response with electrolyte increase. AuNS heteroaggregation rates on the other hand, showed regime dependent response. At low electrolyte or RLCA regime, AuNS heteroaggregation showed significantly slower rates, compared to its homoaggregation behavior; whereas enhanced heteroaggregation was observed for DLCA regime. The key mechanisms of heteroaggregation of AuNS are identified as obstruction to collision at RLCA regime and facilitating enhanced attachment at DLCA regime manifested by the presence of PA-SWNTs. Presence of Suwannee River humic acid (SRHA) showed aggregation enhancement for both homo- and hetero-systems, in presence of divalent Ca2+ ions. Bridging between SRHA molecules is identified as the key mechanism for increased aggregation rate. The findings of this study are relevant particularly to coexistence of engineered nanomaterials. The strategy of using nonaggregating PA-SWNTs is a novel experimental strategy that can be adopted elsewhere to further the heteroaggregation studies for a wider set of particles and surface coatings. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CLUSTERING of particles KW - RESEARCH KW - GOLD nanoparticles KW - SOLUTION (Chemistry) KW - SINGLE walled carbon nanotubes KW - ELECTROLYTE solutions KW - REACTION mechanisms (Chemistry) N1 - Accession Number: 86236020; Nabiul Afrooz, A. R. M. 1 Khan, Iftheker A. 1 Hussain, Saber M. 2 Saleh, Navid B. 1; Email Address: salehn@engr.sc.edu; Affiliation: 1: Department of Civil and Environmental Engineering, University of South Carolina, Columbia, South Carolina 29208, United States 2: Human Effectiveness Directorate, 711 Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, Ohio 45431, United States; Source Info: 2/19/2013, Vol. 47 Issue 4, p1853; Subject Term: CLUSTERING of particles; Subject Term: RESEARCH; Subject Term: GOLD nanoparticles; Subject Term: SOLUTION (Chemistry); Subject Term: SINGLE walled carbon nanotubes; Subject Term: ELECTROLYTE solutions; Subject Term: REACTION mechanisms (Chemistry); Number of Pages: 8p; Document Type: Article L3 - 10.1021/es3032709 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86236020&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ullrich, B. AU - Wang, J. S. T1 - All-optical tuning of the Stokes shift in PbS quantum dots. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/02/18/ VL - 102 IS - 7 M3 - Article SP - 071905 EP - 071905-3 PB - American Institute of Physics SN - 00036951 AB - The Stokes shift of colloidal 4.7 nm PbS quantum dots was measured between 5 and 300 K at incrementally increasing continuous laser intensities. The results demonstrate Stokes shift tuning by optical means only at stable given temperatures due to optically enforced electronic state alteration in the quantum dots. The tuning phenomenon is perfectly fit by a semi-empirical model, which provides a design tool for the chromaticity of quantum dots at different optical pump intensities. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM dots KW - LASERS KW - TEMPERATURE KW - QUANTUM electronics KW - SEMICONDUCTORS N1 - Accession Number: 85738580; Ullrich, B. 1 Wang, J. S. 2; Affiliation: 1: Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca, Morelos C.P. 62210, 2: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright Patterson AFB, Ohio 45433-7707,; Source Info: 2/18/2013, Vol. 102 Issue 7, p071905; Subject Term: QUANTUM dots; Subject Term: LASERS; Subject Term: TEMPERATURE; Subject Term: QUANTUM electronics; Subject Term: SEMICONDUCTORS; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 1p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.4793413 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85738580&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mao, Xiangyu AU - Sun, Hui AU - Wang, Wei AU - Chen, Xiaobing AU - Lu, Yalin T1 - Ferromagnetic, ferroelectric properties, and magneto-dielectric effect of Bi4.25La0.75Fe0.5Co0.5Ti3O15 ceramics. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/02/18/ VL - 102 IS - 7 M3 - Article SP - 072904 EP - 072904-5 PB - American Institute of Physics SN - 00036951 AB - Multiferroic properties of four-layered Bi4.25La0.75Fe0.5Co0.5Ti3O15 ceramics were carefully investigated. X-ray diffraction and high resolution transmission electron microscopy analyses indicate that the as-prepared sample is almost free from secondary phases, and magnetization measurements confirm a ferromagnetic transition ∼483 K. At room temperature (RT), the sample shows a typical ferromagnetism with a remnant magnetization (2Mr) of ∼51.2 m emu/g, and a good ferroelectric hysteresis with a remnant polarization (2Pr) of ∼15.4 μC/cm2. More importantly, an obvious magneto-dielectric (MD) effect has been found under a low magnetic field of 1 T at RT with a maximum of magneto-dielectric constant of ∼10.5%. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BISMUTH compounds -- Crystallography KW - BISMUTH compounds -- Synthesis KW - BISMUTH -- Metallurgy KW - FERROMAGNETISM KW - MAGNETIC fields KW - MAGNETIC induction N1 - Accession Number: 85738640; Mao, Xiangyu 1 Sun, Hui 1,2 Wang, Wei 1 Chen, Xiaobing 1 Lu, Yalin 3,4; Affiliation: 1: College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, 2: Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, 3: Hefei National Laboratory for Physical Sciences at the Microscale, Hefei 230026, People's Republic of China and Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, 4: Laser Optics Research Center, US Air Force Academy, Colorado 80840,; Source Info: 2/18/2013, Vol. 102 Issue 7, p072904; Subject Term: BISMUTH compounds -- Crystallography; Subject Term: BISMUTH compounds -- Synthesis; Subject Term: BISMUTH -- Metallurgy; Subject Term: FERROMAGNETISM; Subject Term: MAGNETIC fields; Subject Term: MAGNETIC induction; NAICS/Industry Codes: 331410 Nonferrous Metal (except Aluminum) Smelting and Refining; Number of Pages: 1p; Illustrations: 1 Black and White Photograph, 5 Graphs; Document Type: Article L3 - 10.1063/1.4793305 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85738640&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zherebtsov, S.V. AU - Dyakonov, G.S. AU - Salem, A.A. AU - Sokolenko, V.I. AU - Salishchev, G.A. AU - Semiatin, S.L. T1 - Formation of nanostructures in commercial-purity titanium via cryorolling JO - Acta Materialia JF - Acta Materialia Y1 - 2013/02/15/ VL - 61 IS - 4 M3 - Article SP - 1167 EP - 1178 SN - 13596454 AB - Abstract: Microstructure evolution in commercial-purity titanium during plane-strain multipass rolling to a true thickness strain of 2.66 at 77 and 293K was quantified. Deformation at both temperatures was accompanied by twinning. At 77K, twinning was more extensive in terms of the fraction of twinned grains and the duration of the twinning stage. Rolling to a true thickness strain of 2.66 resulted in the formation of a microstructure with a grain/subgrain size of ∼80nm at 77K or ∼200nm at 293K. The contribution of various mechanisms to the strength of titanium following rolling at 77 and 293K was analyzed quantitatively. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURES KW - DEFORMATIONS (Mechanics) KW - TITANIUM KW - STRAINS & stresses (Mechanics) KW - MICROSTRUCTURE KW - TWINNING (Crystallography) KW - STRENGTH of materials KW - ROLLING (Metalwork) KW - Cryorolling KW - Microstructure formation KW - Nanostructure KW - Titanium KW - Twinning N1 - Accession Number: 85176177; Zherebtsov, S.V. 1; Email Address: ser_z@mail.ru Dyakonov, G.S. 1 Salem, A.A. 2,3 Sokolenko, V.I. 4 Salishchev, G.A. 1 Semiatin, S.L. 2; Affiliation: 1: Laboratory of Bulk Nanostructured Materials, Belgorod State University, Pobeda 85, Belgorod 308015, Russia 2: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7817, USA 3: Universal Technology Corporation, Dayton, OH 45432, USA 4: National Science Center, Kharkov Institute of Physics and Technology, Akademicheskaya-1, Kharkov 61108, Ukraine; Source Info: Feb2013, Vol. 61 Issue 4, p1167; Subject Term: NANOSTRUCTURES; Subject Term: DEFORMATIONS (Mechanics); Subject Term: TITANIUM; Subject Term: STRAINS & stresses (Mechanics); Subject Term: MICROSTRUCTURE; Subject Term: TWINNING (Crystallography); Subject Term: STRENGTH of materials; Subject Term: ROLLING (Metalwork); Author-Supplied Keyword: Cryorolling; Author-Supplied Keyword: Microstructure formation; Author-Supplied Keyword: Nanostructure; Author-Supplied Keyword: Titanium; Author-Supplied Keyword: Twinning; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331410 Nonferrous Metal (except Aluminum) Smelting and Refining; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331491 Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331315 Aluminum Sheet, Plate, and Foil Manufacturing; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331221 Rolled Steel Shape Manufacturing; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.actamat.2012.10.026 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85176177&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fitzgerald, Lisa A. AU - Petersen, Emily R. AU - Leary, Dagmar H. AU - Nadeau, Lloyd J. AU - Soto, Carissa M. AU - Ray, Richard I. AU - Little, Brenda J. AU - Ringeisen, Bradley R. AU - Johnson, Glenn R. AU - Vora, Gary J. AU - Biffinger, Justin C. T1 - Shewanella frigidimarina microbial fuel cells and the influence of divalent cations on current output JO - Biosensors & Bioelectronics JF - Biosensors & Bioelectronics Y1 - 2013/02/15/ VL - 40 IS - 1 M3 - Article SP - 102 EP - 109 SN - 09565663 AB - Abstract: The genes involved in the proposed pathway for Shewanella extracellular electron transfer (EET) are highly conserved. While extensive studies involving EET from a fresh water Shewanella microbe (S. oneidensis MR-1) to soluble and insoluble electron acceptors have been published, only a few reports have examined EET from marine strains of Shewanella. Thus, Shewanella frigidimarina (an isolate from Antarctic Sea ice) was used within miniature microbial fuel cells (mini-MFC) to evaluate potential power output. During the course of this study several distinct differences were observed between S. oneidensis MR-1 and S. frigidimarina under comparable conditions. The maximum power density with S. frigidimarina was observed when the anolyte was half-strength marine broth (1/2 MB) (0.28μW/cm2) compared to Luria–Bertani (LB) (0.07μW/cm2) or a defined growth minimal medium (MM) (0.02μW/cm2). The systematic modification of S. frigidimarina cultured in 1/2 MB and LB with divalent cations shows that a maximum current output can be generated independent of internal ionic ohmic losses and the presence of external mediators. [Copyright &y& Elsevier] AB - Copyright of Biosensors & Bioelectronics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHEWANELLA KW - MICROBIAL fuel cells KW - ELECTRIC currents KW - CHARGE exchange KW - ELECTROPHILES KW - ANOLYTES KW - Extracellular electron transfer KW - Microbial fuel cell KW - Shewanella frigidimarina KW - Shewanella oneidensis MR-1 N1 - Accession Number: 83328687; Fitzgerald, Lisa A. 1 Petersen, Emily R. 2 Leary, Dagmar H. 3 Nadeau, Lloyd J. 4 Soto, Carissa M. 5 Ray, Richard I. 6 Little, Brenda J. 6 Ringeisen, Bradley R. 1 Johnson, Glenn R. 4 Vora, Gary J. 5 Biffinger, Justin C. 1; Email Address: justin.biffinger@nrl.navy.mil; Affiliation: 1: Chemistry Division, US Naval Research Laboratory, 4555 Overlook Avenue, SW, Washington, DC 20375, United States 2: Nova Research Inc., 1900 Elkin Street Suite 230 Alexandria, VA 22308, United States 3: National Research Council, Postdoctoral Associate at NRL, 4555 Overlook Avenue, SW, Washington, DC 20375, United States 4: Air Force Research Laboratory, 139 Barnes Drive, Suite #2, Tyndall AFB, FL. 32403, United States 5: Center for Bio/Molecular Science and Engineering, US Naval Research Laboratory, 4555 Overlook Avenue, SW, Washington, DC. 20375, United States 6: Oceanography Division, US Naval Research Laboratory, Building 1009, John C. Stennis Space Center, MS. 39529, United States; Source Info: Feb2013, Vol. 40 Issue 1, p102; Subject Term: SHEWANELLA; Subject Term: MICROBIAL fuel cells; Subject Term: ELECTRIC currents; Subject Term: CHARGE exchange; Subject Term: ELECTROPHILES; Subject Term: ANOLYTES; Author-Supplied Keyword: Extracellular electron transfer; Author-Supplied Keyword: Microbial fuel cell; Author-Supplied Keyword: Shewanella frigidimarina; Author-Supplied Keyword: Shewanella oneidensis MR-1; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.bios.2012.06.039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83328687&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Qin, Guokui AU - Dennis, Patrick B. AU - Zhang, Yuji AU - Hu, Xiao AU - Bressner, Jason E. AU - Sun, Zhongyuan AU - Crookes-Goodson, Wendy J. AU - Naik, Rajesh R. AU - Omenetto, Fiorenzo G. AU - Kaplan, David L. T1 - Recombinant reflectin-based optical materials. JO - Journal of Polymer Science Part B: Polymer Physics JF - Journal of Polymer Science Part B: Polymer Physics Y1 - 2013/02/15/ VL - 51 IS - 4 M3 - Article SP - 254 EP - 264 SN - 08876266 AB - Reflectins are a unique group of structural proteins involved in dynamic optical systems in cephalopods that modulate incident light or bioluminescence. We describe cloning, structural characterization, and optical properties of a reflectin-based domain, refCBA, from reflectin 1a of Hawaiian bobtail squid, Euprymna scolopes. Thin films created from the recombinant protein refCBA display interesting optical features when the recombinant protein is appropriately organized. RefCBA was cloned and expressed as a soluble protein enabling purification, with little structural organization found using Fourier transform infrared spectroscopy and circular dichroism. Single-layer and multi-layer thin films of refCBA were then produced by flow coating and spin coating, and displayed colors due to thin film interference. Diffraction experiments showed the assemblies were ordered enough to work as diffraction gratings to generate diffraction patterns. Nano-spheres and lamellar microstructures of refCBA samples were observed by scanning electron microscopy and atomic force microscopy. Despite the reduced complexity of the refCBA protein compared to natural reflectins, unique biomaterials with similar properties to reflectins were generated by self-assembled reflectin-based refCBA molecules. © 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2013 [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Polymer Science Part B: Polymer Physics is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL materials KW - CYTOSKELETAL proteins KW - RECOMBINANT proteins KW - SCANNING electron microscopy KW - THIN films KW - MOLECULAR self-assembly KW - optics KW - reflectin KW - self-assembly KW - structural coloration KW - thin films N1 - Accession Number: 84622525; Qin, Guokui 1 Dennis, Patrick B. 2 Zhang, Yuji 3 Hu, Xiao 1 Bressner, Jason E. 1 Sun, Zhongyuan 1 Crookes-Goodson, Wendy J. 2 Naik, Rajesh R. 2 Omenetto, Fiorenzo G. 1,3 Kaplan, David L. 1; Affiliation: 1: Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155 2: Air Force Research Laboratory, Materials and Manufacturing Directorate Biotechnology Group, Wright-Patterson Air Force Base, Dayton, Ohio 45433 3: Department of Physics and Astronomy, Tufts University, 4 Colby Street, Medford, Massachusetts 02155; Source Info: 2/15/2013, Vol. 51 Issue 4, p254; Subject Term: OPTICAL materials; Subject Term: CYTOSKELETAL proteins; Subject Term: RECOMBINANT proteins; Subject Term: SCANNING electron microscopy; Subject Term: THIN films; Subject Term: MOLECULAR self-assembly; Author-Supplied Keyword: optics; Author-Supplied Keyword: reflectin; Author-Supplied Keyword: self-assembly; Author-Supplied Keyword: structural coloration; Author-Supplied Keyword: thin films; Number of Pages: 11p; Document Type: Article L3 - 10.1002/polb.23204 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84622525&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sukeshini A., Mary AU - Meisenkothen, Frederick AU - Gardner, Paul AU - Reitz, Thomas L. T1 - Aerosol Jet® Printing of functionally graded SOFC anode interlayer and microstructural investigation by low voltage scanning electron microscopy JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2013/02/15/ VL - 224 M3 - Article SP - 295 EP - 303 SN - 03787753 AB - Abstract: Yttria-stabilized zirconia (YSZ) electrolyte and functionally graded anode interlayers with compositional variation were deposited by Aerosol Jet® Printing (AJP) using ink suspensions of NiO and YSZ. The AJP system''s dual atomizer configuration that allows on-demand material mixing was used to deposit the graded composite anode interlayer. These layers together with an LSM (strontium doped lanthanum manganite) based pasted cathode layer were integrated in an anode supported SOFC button cell. Cells with graded anode interlayers performed better than cells with a non-graded anode interlayer. The enhancement in electrochemical performance can be attributed to the compositional gradation. The current printing method of fabricating SOFC layers shows clear advantages of high reproducibility. In routine SEM (scanning electron microscopy) evaluation of microstructures, acceleration voltages typically used are 10–20 kV. Due to the similar backscattering coefficients of YSZ and Ni, it is difficult to clearly distinguish between the two phases in the image. In this work, low accelerating voltages (<5 kV) were used to introduce a divergence of the YSZ and Ni backscatter coefficients to investigate the composite layers printed. The backscattering mechanism for image contrast was confirmed and clarified by specially designed SEM experiments that isolated BSE (back scattered electrons) from SE (secondary electrons). [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLID oxide fuel cells KW - AEROSOLS (Sprays) KW - MICROSTRUCTURE KW - SCANNING electron microscopy KW - YTTRIA stabilized zirconium oxide KW - BACKSCATTERING KW - Aerosol jet printing KW - Functionally graded anode interlayer KW - Low voltage scanning electron microscopy KW - Microstructure KW - Solid oxide fuel cell N1 - Accession Number: 83455102; Sukeshini A., Mary 1,2; Email Address: mary.ayyadurai.ctr@wpafb.af.mil Meisenkothen, Frederick 3 Gardner, Paul 2 Reitz, Thomas L. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469, USA 2: The Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 3: UES Corp., Dayton, OH 45432, USA; Source Info: Feb2013, Vol. 224, p295; Subject Term: SOLID oxide fuel cells; Subject Term: AEROSOLS (Sprays); Subject Term: MICROSTRUCTURE; Subject Term: SCANNING electron microscopy; Subject Term: YTTRIA stabilized zirconium oxide; Subject Term: BACKSCATTERING; Author-Supplied Keyword: Aerosol jet printing; Author-Supplied Keyword: Functionally graded anode interlayer; Author-Supplied Keyword: Low voltage scanning electron microscopy; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Solid oxide fuel cell; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jpowsour.2012.09.094 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83455102&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zherebtsov, S.V. AU - Murzinova, M.A. AU - Klimova, M.V. AU - Salishchev, G.A. AU - Popov, A.A. AU - Semiatin, S.L. T1 - Microstructure evolution during warm working of Ti–5Al–5Mo–5V–1Cr–1Fe at 600 and 800°C JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2013/02/15/ VL - 563 M3 - Article SP - 168 EP - 176 SN - 09215093 AB - Abstract: Microstructure evolution during compression to the true height strain 0.29, 0.69, or 1.2 at 600 and 800°C of the β-rich titanium alloy Ti–5Al–5Mo–5V–1Cr–1Fe (VT22) with an initial lamellar microstructure was established using scanning and transmission electron microscopy. It was found that microstructure evolution at both temperatures was controlled primarily by substructure evolution within the β phase. At 800°C, extensive recovery within the β phase resulted in the formation of a stable structure comprising subgrains ∼1.5μm in diameter. During deformation at this temperature, lamellae of the α phase fragmented via a boundary-grooving mechanism. Due to the sluggish diffusion kinetics, however, spheroidization at 800°C was incomplete. At the lower processing temperature, recovery processes within the β phase were much slower, leading to greater refinement of the β matrix. The decomposition of the metastable β phase during warm working, gave rise to very fine α-lath precipitates, which resulted in the formation of an ultrafine microstructure with a grain size of 0.5μm. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - TITANIUM compounds KW - LAMELLARIIDAE KW - TRANSMISSION electron microscopy KW - DEFORMATIONS (Mechanics) KW - TRANSITION metal compounds KW - Microstructure refinement KW - Precipitation KW - Speroidization KW - Thermomechanical processing KW - Titanium alloys N1 - Accession Number: 85021172; Zherebtsov, S.V. 1; Email Address: ser_z@mail.ru Murzinova, M.A. 2 Klimova, M.V. 1 Salishchev, G.A. 1 Popov, A.A. 3 Semiatin, S.L. 4; Affiliation: 1: Laboratory of Bulk Nanostructured Materials, Belgorod State University, Pobeda-85, Belgorod 308015, Russia 2: Institute for Metals Superplasticity Problems, Khalturina-39, Ufa 450001, Russia 3: Ural Federal University, Mira-19, Ekaterinburg 620002, Russia 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLM, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Feb2013, Vol. 563, p168; Subject Term: MICROSTRUCTURE; Subject Term: TITANIUM compounds; Subject Term: LAMELLARIIDAE; Subject Term: TRANSMISSION electron microscopy; Subject Term: DEFORMATIONS (Mechanics); Subject Term: TRANSITION metal compounds; Author-Supplied Keyword: Microstructure refinement; Author-Supplied Keyword: Precipitation; Author-Supplied Keyword: Speroidization; Author-Supplied Keyword: Thermomechanical processing; Author-Supplied Keyword: Titanium alloys; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.msea.2012.11.042 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85021172&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Cheng AU - Grillot, Frédéric AU - Kovanis, Vassilios AU - Even, Jacky T1 - Rate equation analysis of injection-locked quantum cascade lasers. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/02/14/ VL - 113 IS - 6 M3 - Article SP - 063104 PB - American Institute of Physics SN - 00218979 AB - The modulation properties of optical injection-locked quantum cascade lasers (QCLs) are investigated theoretically via a simple low dimensional rate equation model. It is found that both strong injection level and positive optical frequency detuning increase the modulation bandwidth, while a large linewidth enhancement factor (LEF) contributes to the enhancement of the peak magnitude in the intensity modulation (IM) response. As opposed to conventional injection-locked interband lasers, it is demonstrated that no dip occurs in the QCL's IM response, which is beneficial for a series of broadband microwave photonic applications. Computations also show that the value of the LEF can critically modify both the locking and stability regions on the optical frequency detuning injection level map. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM cascade lasers KW - SEMICONDUCTOR lasers KW - MATHEMATICAL models KW - BANDWIDTHS KW - PHOTONICS N1 - Accession Number: 85481388; Wang, Cheng 1 Grillot, Frédéric 2 Kovanis, Vassilios 3,4 Even, Jacky 1; Affiliation: 1: Université Européenne de Bretagne, INSA, CNRS FOTON, 20 avenue des buttes de Coesmes, 35708 Rennes, 2: Telecom Paristech, Ecole Nationale Supérieure des Télécommunications, CNRS LTCI, 46 rue Barrault, 75013 Paris, 3: Air Force Research Laboratory, 2241 Avionics Circle, Wright-Patterson AFB, Dayton, Ohio 45433, 4: Electro Science Laboratory, The Ohio State University, 1320 Kinnear Road, Columbus, Ohio 43212,; Source Info: Feb2013, Vol. 113 Issue 6, p063104; Subject Term: QUANTUM cascade lasers; Subject Term: SEMICONDUCTOR lasers; Subject Term: MATHEMATICAL models; Subject Term: BANDWIDTHS; Subject Term: PHOTONICS; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 6p; Illustrations: 1 Diagram, 4 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.4790883 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85481388&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vallabhaneni, Ajit K. AU - Qiu, Bo AU - Hu, Jiuning AU - Chen, Yong P. AU - Roy, Ajit K. AU - Ruan, Xiulin T1 - Interfacial thermal conductance limit and thermal rectification across vertical carbon nanotube/graphene nanoribbon-silicon interfaces. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/02/14/ VL - 113 IS - 6 M3 - Article SP - 064311 PB - American Institute of Physics SN - 00218979 AB - Various models were previously used to predict interfacial thermal conductance of vertical carbon nanotube (CNT)-silicon interfaces, but the predicted values were several orders of magnitude off the experimental data. In this work, we show that the CNT filling fraction (the ratio of contact area to the surface area of the substrate) is the key to remedy this discrepancy. Using molecular dynamics, we have identified an upper limit of thermal interface conductance for C-Si interface which is around 1.25 GW/m2K, corresponding to a 100% filling fraction of carbon nanotube or graphene nanoribbon on substrate. By extrapolating to low filling fraction (∼1%) that was measured in experiments, our predicted interfacial thermal conductance agrees with experimental data for vertical CNT arrays grown on silicon substrate (∼3 MW/m2 K). Meanwhile, thermal rectification of more than 20% has been found at these C-Si interfaces. We observed that this is strongly dependent on the interfacial temperature drop than the filling fraction. This new effect needs to be considered in future thermal interface materials design. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL conductivity KW - RESEARCH KW - CARBON nanotubes KW - SILICON KW - INTERFACES (Physical sciences) KW - MOLECULAR dynamics KW - GRAPHENE KW - NANORIBBONS N1 - Accession Number: 85481433; Vallabhaneni, Ajit K. 1 Qiu, Bo 1 Hu, Jiuning 2,3 Chen, Yong P. 2,3,4 Roy, Ajit K. 5 Ruan, Xiulin 1,3,5; Affiliation: 1: School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, 2: School of Electrical Computer Engineering, Purdue University, West Lafayette, Indiana 47907, 3: Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, 4: Department of Physics, Purdue University, West Lafayette, Indiana 47907, 5: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio 45433,; Source Info: Feb2013, Vol. 113 Issue 6, p064311; Subject Term: THERMAL conductivity; Subject Term: RESEARCH; Subject Term: CARBON nanotubes; Subject Term: SILICON; Subject Term: INTERFACES (Physical sciences); Subject Term: MOLECULAR dynamics; Subject Term: GRAPHENE; Subject Term: NANORIBBONS; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.4790367 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85481433&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Husaini, S. AU - Shima, D. AU - Ahirwar, P. AU - Rotter, T. J. AU - Hains, C. P. AU - Dang, T. AU - Bedford, R. G. AU - Balakrishnan, G. T1 - Effect of antimony nano-scale surface-structures on a GaSb/AlAsSb distributed Bragg reflector. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/02/11/ VL - 102 IS - 6 M3 - Article SP - 063108 PB - American Institute of Physics SN - 00036951 AB - Effects of antimony crystallization on the surface of GaSb during low temperature molecular beam epitaxy growth are investigated. The geometry of these structures is studied via transmission electron and atomic force microscopies, which show the surface metal forms triangular-shaped, elongated nano-wires with a structured orientation composed entirely of crystalline antimony. By depositing antimony on a GaSb/AlAsSb distributed Bragg reflector, the field is localized within the antimony layer. Polarization dependent transmission measurements are carried out on these nano-structures deposited on a GaSb/AlAsSb distributed Bragg reflector. It is shown that the antimony-based structures at the surface favor transmission of light polarized perpendicular to the wires. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BRAGG gratings KW - MOLECULAR beam epitaxy KW - ANTIMONY KW - NANOSTRUCTURED materials KW - ATOMIC force microscopy KW - ELECTRON transport N1 - Accession Number: 85518959; Husaini, S. 1 Shima, D. 1 Ahirwar, P. 1 Rotter, T. J. 1 Hains, C. P. 1 Dang, T. 1 Bedford, R. G. 1 Balakrishnan, G. 1; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Dayton, OH 45433,; Source Info: 2/11/2013, Vol. 102 Issue 6, p063108; Subject Term: BRAGG gratings; Subject Term: MOLECULAR beam epitaxy; Subject Term: ANTIMONY; Subject Term: NANOSTRUCTURED materials; Subject Term: ATOMIC force microscopy; Subject Term: ELECTRON transport; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.4792320 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85518959&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sergeev, E. AU - Grach, S. AU - Shindin, A. AU - Mishin, E. AU - Bernhardt, P. AU - Briczinski, S. AU - Isham, B. AU - Broughton, M. AU - LaBelle, J. AU - Watkins, B. T1 - Artificial Ionospheric Layers during Pump Frequency Stepping Near the 4th Gyroharmonic at HAARP. JO - Physical Review Letters JF - Physical Review Letters Y1 - 2013/02/08/ VL - 110 IS - 6 M3 - Article SP - 065002-1 EP - 065002-5 SN - 00319007 AB - We report on artificial descending plasma layers created in the ionosphere F region by high-power high-frequency (HF) radio waves from High-frequency Active Auroral Research Program at frequencies f0 near the fourth electron gyroharmonic 4fce. The data come from concurrent measurements of the secondary escaping radiation from the HF-pumped ionosphere, also known as stimulated electromagnetic emission, reflected probing signals at f0, and plasma line radar echoes. The artificial layers appeared only for injections along the magnetic field and f0 > 4fce at the nominal HF interaction altitude in the background ionosphere. Their average downward speed ~0.5 km/s holds until the terminal altitude where the local fourth gyroharmonic matches f0. The total descent increases with the nominal offset f0 - 4fce. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review Letters is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSPHERIC electron density KW - RADIO frequency allocation KW - RADIO waves KW - ELECTROMAGNETIC interference KW - MAGNETIC fields KW - IONOSPHERE KW - ELECTRON affinity N1 - Accession Number: 85857485; Sergeev, E. 1,2 Grach, S. 1,2 Shindin, A. 1,2 Mishin, E. 3 Bernhardt, P. 4 Briczinski, S. 4 Isham, B. 5 Broughton, M. 6 LaBelle, J. 6 Watkins, B. 7; Affiliation: 1: Radiophysical Research Institute, 25a/12 Bolshaya Pecherskaya Street, Nizhny Novgorod 603950, Russia 2: Lobachevsky State University of Nizhny Novgorod, 23 Gagarin Avenue, Nizhny Novgorod 603950, Russia 3: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico 87117, USA 4: Plasma Physics Division, Naval Research Laboratory, Washington, DC 20375, USA 5: Department of Electrical and Computer Engineering, Interamerican University, Bayamón, Puerto Rico 00957, USA 6: Department of Physics and Astronomy, Dartmouth College, Hanover, New Hampshire 03755, USA 7: Geophysical Institute, University of Alaska Fairbanks, Fairbanks, Alaska 99775, USA; Source Info: 2/8/2013, Vol. 110 Issue 6, p065002-1; Subject Term: IONOSPHERIC electron density; Subject Term: RADIO frequency allocation; Subject Term: RADIO waves; Subject Term: ELECTROMAGNETIC interference; Subject Term: MAGNETIC fields; Subject Term: IONOSPHERE; Subject Term: ELECTRON affinity; Number of Pages: 5p; Document Type: Article L3 - 10.1103/PhysRevLett.110.065002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85857485&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Z. Zhang AU - D. C. Look AU - Schifano, R. AU - Johansen, K. M. AU - Svensson, B. G. AU - Brillson, L. J. T1 - Process dependence of H passivation and doping in H-implanted ZnO. JO - Journal of Physics: D Applied Physics JF - Journal of Physics: D Applied Physics Y1 - 2013/02/06/ VL - 46 IS - 5 M3 - Article SP - 1 EP - 7 SN - 00223727 AB - We used depth-resolved cathodoluminescence spectroscopy (DRCLS), photoluminescence (PL) spectroscopy and temperature-dependent Hall-effect (TDHE) measurements to describe the strong dependence of H passivation and doping in H-implanted ZnO on thermal treatment. Increasing H implantation dose increases passivation of Zn and oxygen vacancy-related defects, while reducing deep level emissions. Over annealing temperatures of 100-400 ?C at different times, 1 h annealing at 200 ?C yielded the lowest DRCLS deep level emissions, highest TDHE carrier mobility, and highest near band-edge PL emission. These results describe the systematics of dopant implantation and thermal activation on H incorporation in ZnO and their effects on its electrical properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: D Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LUMINESCENCE spectroscopy KW - PHOTOLUMINESCENCE KW - HALL effect KW - ZINC oxide KW - ION implantation KW - SPECTRUM analysis KW - CATHODOLUMINESCENCE N1 - Accession Number: 90118453; Z. Zhang 1; Email Address: zhang.720@osu.edu D. C. Look 2,3 Schifano, R. 4 Johansen, K. M. 4 Svensson, B. G. 4 Brillson, L. J. 1,5,6; Affiliation: 1: Department of Electrical and Computer Engineering, Ohio State University, Columbus, OH 43210, USA 2: Semiconductor Research Center, Wright State University, Dayton, OH 45432, USA 3: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 4: Department of Physics, University of Oslo, PO Box 1048 Blindern, N-0316 Oslo, Norway 5: Department of Physics, Ohio State University, Columbus, OH 43210, USA 6: Center for Materials Research, Ohio State University, Columbus, OH 43210, USA; Source Info: 2013, Vol. 46 Issue 5, p1; Subject Term: LUMINESCENCE spectroscopy; Subject Term: PHOTOLUMINESCENCE; Subject Term: HALL effect; Subject Term: ZINC oxide; Subject Term: ION implantation; Subject Term: SPECTRUM analysis; Subject Term: CATHODOLUMINESCENCE; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 7p; Document Type: Article L3 - 10.1088/0022-3727/46/5/055107 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90118453&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guglielmotti, V. AU - Tamburri, E. AU - Orlanducci, S. AU - Terranova, M.L. AU - Rossi, M. AU - Notarianni, M. AU - Fairchild, S.B. AU - Maruyama, B. AU - Behabtu, N. AU - Young, C.C. AU - Pasquali, M. T1 - Macroscopic self-standing SWCNT fibres as efficient electron emitters with very high emission current for robust cold cathodes JO - Carbon JF - Carbon Y1 - 2013/02// VL - 52 M3 - Article SP - 356 EP - 362 SN - 00086223 AB - Abstract: A novel of self-standing nanotube-based cold cathode is described. The electron emitter is a single macroscopic fibre spun from neat single wall carbon nanotubes and consists of an ensemble of nanotube bundles held together by van der Waals forces. Field emission measurements carried out using two different types of apparatus demonstrated the long working life of the realised cathode. The system is able to emit at very high current densities, up to 13A/cm2, and shows very low values of both turn on and threshold field, 0.12V/μm and 0.21V/μm, respectively. Such easy to handle self-standing electron sources assure good performances and represent an enabling technology for a scalable production of cold cathodes. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SINGLE walled carbon nanotubes KW - CARBON fibers KW - ELECTRON emission KW - ELECTRIC currents KW - CATHODES KW - VAN der Waals forces KW - FIELD emission N1 - Accession Number: 83455475; Guglielmotti, V. 1 Tamburri, E. 1 Orlanducci, S. 1 Terranova, M.L. 1 Rossi, M. 2; Email Address: marcorossi@uniroma1.it Notarianni, M. 2 Fairchild, S.B. 3 Maruyama, B. 3 Behabtu, N. 4 Young, C.C. 4 Pasquali, M. 4,5; Affiliation: 1: Dip.to Scienze e Tecnologie Chimiche, Università degli Studi di Roma “Tor Vergata”, Via della Ricerca Scientifica, 00133 Roma, Italy 2: Dip.to di Scienze di Base e Applicate per l’Ingegneria, Università degli Studi di Roma “Sapienza”, Via A. Scarpa, 00161 Roma, Italy 3: Materials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, USA 4: Department of Chemical & Biomolecular Engineering and Chemistry, Rice University, Houston, TX, USA 5: The Smalley Institute for Nanoscale Science & Technology, Rice University, Houston, TX, USA; Source Info: Feb2013, Vol. 52, p356; Subject Term: SINGLE walled carbon nanotubes; Subject Term: CARBON fibers; Subject Term: ELECTRON emission; Subject Term: ELECTRIC currents; Subject Term: CATHODES; Subject Term: VAN der Waals forces; Subject Term: FIELD emission; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.carbon.2012.09.037 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83455475&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Allen, Casey AU - Valco, Daniel AU - Toulson, Elisa AU - Edwards, Tim AU - Lee, Tonghun T1 - Ignition behavior and surrogate modeling of JP-8 and of camelina and tallow hydrotreated renewable jet fuels at low temperatures JO - Combustion & Flame JF - Combustion & Flame Y1 - 2013/02// VL - 160 IS - 2 M3 - Article SP - 232 EP - 239 SN - 00102180 AB - Abstract: The autoignition characteristics of the conventional jet fuel, JP-8, and the alternative jet fuels, camelina and tallow hydrotreated renewable jet (HRJ) fuels, are investigated using a rapid compression machine and the direct test chamber charge preparation approach. Ignition delay measurements are made at low compressed temperatures (625K⩽ Tc ⩽730K), compressed pressures of pc =5, 10, and 20bar, and equivalence ratios of ϕ =0.25, 0.5 and 1.0 in air. The HRJ fuels ignite more readily than JP-8 for all tested conditions, consistent with derived cetane number data in the literature. The camelina and tallow HRJ fuels exhibit similar autoignition characteristics, but the two fuels can be distinguished under stoichiometric conditions. Kinetic modeling is conducted with a 2-component surrogate (10% n-dodecane/90% 2-methylundecane) and a single component surrogate (2-methylnonane) to evaluate the potential to predict ignition behavior of the HRJ fuels. Modeling results indicate that the surrogate fuels can only provide useful predictions at a limited set of conditions (pc =5bar and ϕ =1.0), and that the agreement of the model and experimental data improves with decreasing compressed pressure. Under most conditions, the 2-component surrogate provides better prediction of ignition behavior, but the single component surrogate is superior at low pressures near the negative temperature coefficient region. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JET planes -- Fuel KW - TALLOW KW - AIRPLANES -- Motors KW - LOW temperatures KW - PRESSURE KW - STOICHIOMETRY KW - MATHEMATICAL models KW - TEMPERATURE effect KW - IGNITION KW - Autoignition KW - Hydrotreated renewable jet fuels KW - JP-8 KW - Rapid compression machine N1 - Accession Number: 84574618; Allen, Casey 1 Valco, Daniel 1 Toulson, Elisa 1 Edwards, Tim 2 Lee, Tonghun 1; Email Address: tonghun@msu.edu; Affiliation: 1: Department of Mechanical Engineering, Michigan State University, East Lansing, MI 48824, USA 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Feb2013, Vol. 160 Issue 2, p232; Subject Term: JET planes -- Fuel; Subject Term: TALLOW; Subject Term: AIRPLANES -- Motors; Subject Term: LOW temperatures; Subject Term: PRESSURE; Subject Term: STOICHIOMETRY; Subject Term: MATHEMATICAL models; Subject Term: TEMPERATURE effect; Subject Term: IGNITION; Author-Supplied Keyword: Autoignition; Author-Supplied Keyword: Hydrotreated renewable jet fuels; Author-Supplied Keyword: JP-8; Author-Supplied Keyword: Rapid compression machine; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 311613 Rendering and Meat Byproduct Processing; NAICS/Industry Codes: 311611 Animal (except Poultry) Slaughtering; NAICS/Industry Codes: 311614 Rendering and meat processing from carcasses; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.combustflame.2012.10.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84574618&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schmidt, Jacob AU - Kostka, Stanislav AU - Roy, Sukesh AU - Gord, James AU - Ganguly, Biswa T1 - kHz-rate particle-image velocimetry of induced instability in premixed propane/air flame by millisecond pulsed current–voltage JO - Combustion & Flame JF - Combustion & Flame Y1 - 2013/02// VL - 160 IS - 2 M3 - Article SP - 276 EP - 284 SN - 00102180 AB - Abstract: Particle-image velocimetry (PIV) measurements were performed at 6kHz repetition rate in a premixed propane/air flame to examine the effects caused by applied millisecond-wide pulsed voltage–current below self-sustained breakdown. We have demonstrated significant structural changes to a burner-stabilized downward-propagating atmospheric pressure propane/air flame with overall flow speeds near 2m/s with +3kV pulsed applied voltages over 30mm gaps. Phase-locked, 2kHz broadband emission measurements of flame structure were also collected to support the PIV velocity data. The combined high-speed PIV and flame emission measurements were both capable of capturing changes from a single applied voltage pulse rather than using a phase matching approach requiring a highly repeatable disturbance as done previously [1]. The measured reductions in flame height, increases in local flow speeds, generation of large velocity gradients, and rapid oscillations in flame front are suggestive of an induced turbulence in an otherwise laminar flame. Taylor microscale lengths were calculated from the kHz PIV data and structures comparable to the reaction zone thickness were shown to increase during the applied voltage pulse. The timescale under which the flame flow changes combined with the accompanying flame emission measurements suggest that flame fluidics are modified by ion drift current induced net body force in or near the cathode fall at the base of the flame. The reduction in overall flame height and increase in speed near the base of the flame is suggestive of a ‘virtual’ bluff-body present in the flow. These fluidic changes force the flame to transition from a laminar to a highly unstable, transitioning to turbulence regime. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLE image velocimetry KW - PROPANE flames KW - AIR KW - CURRENT-voltage characteristics KW - BREAKDOWN (Electricity) KW - ATMOSPHERIC pressure KW - OSCILLATIONS KW - TURBULENCE KW - Laminar combustion KW - Particle image velocimetry KW - Pulsed electric field N1 - Accession Number: 84574622; Schmidt, Jacob 1; Email Address: JSchmidt@SpectralEnergies.com Kostka, Stanislav 1 Roy, Sukesh 1 Gord, James 2 Ganguly, Biswa 2; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield Street, Dayton, OH 45431, United States 2: Air Force Research Laboratory, WPAFB, OH 45433, United States; Source Info: Feb2013, Vol. 160 Issue 2, p276; Subject Term: PARTICLE image velocimetry; Subject Term: PROPANE flames; Subject Term: AIR; Subject Term: CURRENT-voltage characteristics; Subject Term: BREAKDOWN (Electricity); Subject Term: ATMOSPHERIC pressure; Subject Term: OSCILLATIONS; Subject Term: TURBULENCE; Author-Supplied Keyword: Laminar combustion; Author-Supplied Keyword: Particle image velocimetry; Author-Supplied Keyword: Pulsed electric field; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.combustflame.2012.10.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84574622&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Santhosh, Unni AU - Ahmad, Jalees AU - John, Reji AU - Ojard, Greg AU - Miller, Robert AU - Gowayed, Yasser T1 - Modeling of stress concentration in ceramic matrix composites JO - Composites: Part B, Engineering JF - Composites: Part B, Engineering Y1 - 2013/02// VL - 45 IS - 1 M3 - Article SP - 1156 EP - 1163 SN - 13598368 AB - Abstract: This paper describes a mechanistic modeling approach that attempts to capture the dominant micromechanical deformation and damage mechanisms in woven composites over the temperature and stress ranges relevant to gas turbine engine components. The model is incorporated into a finite-element framework and applied to analyze stress concentration at holes. The materials considered in this study are two-dimensional woven SiC/SiC and SiC/MAS composites. The results include the strain field near circular holes and global load–displacement behavior of the structure. In each case, the model predictions are compared with experimental measurements. Based on these comparisons, conclusions are drawn regarding the efficacy of the modeling approach and needs for further investigations are identified. [Copyright &y& Elsevier] AB - Copyright of Composites: Part B, Engineering is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CERAMIC-matrix composites KW - STRAINS & stresses (Mechanics) KW - MATHEMATICAL models KW - MICROMECHANICS KW - DEFORMATIONS (Mechanics) KW - TEMPERATURE effect KW - FRACTURE mechanics KW - A. Ceramic–matrix composites (CMCs) KW - B. Stress concentrations KW - C. Damage mechanics KW - C. Finite element analysis (FEA) KW - D. Mechanical testing N1 - Accession Number: 83450494; Santhosh, Unni 1; Email Address: usanthosh@structuralanalyticsinc.com Ahmad, Jalees 1 John, Reji 2 Ojard, Greg 3 Miller, Robert 3 Gowayed, Yasser 4; Affiliation: 1: Research Applications Inc., 11772 Sorrento Valley Rd., San Diego, CA 92121, USA 2: Air Force Research Laboratory, AFRL/RXLM, Wright-Patterson AFB, OH 45433, USA 3: Pratt & Whitney, 400 Main Street, East Hartford, CT 06108, USA 4: Department of Polymer and Fiber Engineering, Auburn University, Auburn, AL 36849, USA; Source Info: Feb2013, Vol. 45 Issue 1, p1156; Subject Term: CERAMIC-matrix composites; Subject Term: STRAINS & stresses (Mechanics); Subject Term: MATHEMATICAL models; Subject Term: MICROMECHANICS; Subject Term: DEFORMATIONS (Mechanics); Subject Term: TEMPERATURE effect; Subject Term: FRACTURE mechanics; Author-Supplied Keyword: A. Ceramic–matrix composites (CMCs); Author-Supplied Keyword: B. Stress concentrations; Author-Supplied Keyword: C. Damage mechanics; Author-Supplied Keyword: C. Finite element analysis (FEA); Author-Supplied Keyword: D. Mechanical testing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.compositesb.2012.07.034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83450494&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Olson, David AU - Katz, Alan AU - Naguib, Ahmed AU - Koochesfahani, Manoochehr AU - Rizzetta, Donald AU - Visbal, Miguel T1 - On the challenges in experimental characterization of flow separation over airfoils at low Reynolds number. JO - Experiments in Fluids JF - Experiments in Fluids Y1 - 2013/02// VL - 54 IS - 2 M3 - Article SP - 1 EP - 11 SN - 07234864 AB - Measurements and computations of the separation and reattachment locations are reported for the steady flow over a SD7003 airfoil at different angles of attack and chord Reynolds number in the range 2 × 10-4 × 10. The experiments are based on multi-line molecular tagging velocimetry, and the computations employ an implicit large eddy simulation approach. Comparisons of experimental results with current computations and previous experiments point to challenges involved in the experimental determination of the separation bubble characteristics. The results also underline the importance of the facility-dependent freestream turbulence level on the experimental data. The collective effect of experimental uncertainty and facility-dependent issues, examined systematically herein, appear to clarify the discrepancy among the various experimental and computational results. The findings also suggest that accurate characterization of the separation bubble over airfoils at low Reynolds number is more difficult than generally recognized and presents a challenge in comparing results between different experiments, and between experiments and computations. Moreover, this complicates the validation of computational data against experiments within this flow regime. [ABSTRACT FROM AUTHOR] AB - Copyright of Experiments in Fluids is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLOW separation (Fluid dynamics) KW - AEROFOILS KW - REYNOLDS number KW - VELOCIMETRY KW - LARGE eddy simulation models N1 - Accession Number: 85746484; Olson, David 1 Katz, Alan 1 Naguib, Ahmed 1; Email Address: naguib@egr.msu.edu Koochesfahani, Manoochehr 1 Rizzetta, Donald 2 Visbal, Miguel 2; Affiliation: 1: Mechanical Engineering, Michigan State University, East Lansing 48824 USA 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton 45433-7512 USA; Source Info: Feb2013, Vol. 54 Issue 2, p1; Subject Term: FLOW separation (Fluid dynamics); Subject Term: AEROFOILS; Subject Term: REYNOLDS number; Subject Term: VELOCIMETRY; Subject Term: LARGE eddy simulation models; Number of Pages: 11p; Document Type: Article L3 - 10.1007/s00348-013-1470-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85746484&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Xue AU - Hong, Steven AU - Chakravarthy, Vasu D. AU - Temple, Michael AU - Wu, Zhiqiang T1 - Intercarrier Interference Immune Single Carrier OFDM via Magnitude-Keyed Modulation for High Speed Aerial Vehicle Communication. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2013/02// VL - 61 IS - 2 M3 - Article SP - 658 EP - 668 SN - 00906778 AB - Orthogonal Frequency Division Multiplexing (OFDM) has been considered as a strong candidate for next generation wireless communication systems. Compared to traditional OFDM, Single Carrier OFDM (SC-OFDM) has demonstrated excellent bit error rate (BER) performance, as well as low peak to average power ratio (PAPR). Similar to other multi-carrier transmission technologies, SC-OFDM suffers significant performance degradation resulting from intercarrier interference (ICI) in high mobility environments. Existing techniques for OFDM can be directly adopted in SC-OFDM to improve performance, however, this improved performance comes at costs such as decreased throughput. In this paper, we analyze the effect of ICI on an SC-OFDM system and propose a novel modulation scheme. The proposed Magnitude-Keyed Modulation (MKM) modulation provides SC-OFDM system immunity to ICI and with an easy implementation it significantly outperforms OFDM, SC-OFDM and MC-CDMA systems with Phase Shift Keying (PSK) modulation and Quadrature Amplitude Modulation (QAM) in severe ICI environment. Analysis also illustrates the proposed SC-OFDM system with MKM modulation maintains low PAPR compared to traditional OFDM and SC-OFDM systems with PSK and QAM modulations. Simulation results for different modulation schemes in various ICI environments confirm the effectiveness of the proposed system. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORTHOGONAL frequency division multiplexing KW - BROADBAND communication systems KW - SPREAD spectrum communications KW - BIT error rate KW - DATA transmission systems KW - WIRELESS communication systems KW - CELL phone systems KW - Bit error rate KW - Estimation KW - Intercarrier interference KW - Interference KW - magnitude keyed modulation KW - Modulation KW - Multicarrier code division multiple access KW - OFDM KW - Receivers KW - single carrier OFDM N1 - Accession Number: 85988173; Li, Xue 1 Hong, Steven 2 Chakravarthy, Vasu D. 3 Temple, Michael 4 Wu, Zhiqiang 1; Affiliation: 1: the Department of Electrical Engineering, Wright State University, Dayton, OH, USA 2: the Department of Electrical Engineering, Stanford University, Stanford, CA, USA 3: the Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 4: the Department of Electrical and Computer Engineering, Air Force Institute of Technology, Dayton, OH, USA; Source Info: Feb2013, Vol. 61 Issue 2, p658; Subject Term: ORTHOGONAL frequency division multiplexing; Subject Term: BROADBAND communication systems; Subject Term: SPREAD spectrum communications; Subject Term: BIT error rate; Subject Term: DATA transmission systems; Subject Term: WIRELESS communication systems; Subject Term: CELL phone systems; Author-Supplied Keyword: Bit error rate; Author-Supplied Keyword: Estimation; Author-Supplied Keyword: Intercarrier interference; Author-Supplied Keyword: Interference; Author-Supplied Keyword: magnitude keyed modulation; Author-Supplied Keyword: Modulation; Author-Supplied Keyword: Multicarrier code division multiple access; Author-Supplied Keyword: OFDM; Author-Supplied Keyword: Receivers; Author-Supplied Keyword: single carrier OFDM; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 11p; Document Type: Article L3 - 10.1109/TCOMM.2012.122112.110214 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85988173&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Andreev, Andrey D. AU - Hendricks, Kyle J. T1 - Multicavity Magnetron With the “Rodded” Quasi-Metamaterial Cathode. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2013/02// VL - 41 IS - 2 M3 - Article SP - 400 EP - 407 SN - 00933813 AB - We report on the use of the “rodded” or the longitudinally oriented metal-thin-wire structure as the explosive-emission cathode in high-power multicavity magnetrons. The rodded structure is transparent to the time-varying induced electric field E1 oscillating orthogonally to the individual rods or wires of the structure. The rods (wires) are longitudinally oriented, i.e., along the magnetron axis and parallel to the external dc axial magnetic field H0. The mode pattern established within the magnetron resonant cavity corresponds to one of the TE-like cavity modes of the magnetron operation. This allows defining the rodded structure as the quasi-metamaterial (i.e., not-entirely-metamaterial) structure. Particle-in-cell simulations of the U.S. Air Force Research Laboratory's six-cavity (AFRL-A6) L-band magnetron demonstrate that the rodded quasi-metamaterial cathode allows the magnetron to much more faster select the desired 2 \pi/3 magnetron operating mode within the broader range of the input operating parameters (from 130 to 200 kV at 0.15 T), as compared with the same magnetron working with the traditional smooth cylindrical cathode (from 140 to 160 kV at 0.15 T). [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - RESEARCH KW - CATHODES KW - COMPUTER simulation KW - ELECTRIC fields -- Research KW - PLASMA (Ionized gases) -- Research KW - Anodes KW - Cathode priming KW - Cathodes KW - Cavity resonators KW - computer simulations KW - Gyrotrons KW - Magnetic resonance KW - metamaterial structures KW - Radio frequency KW - relativistic magnetron N1 - Accession Number: 85358513; Andreev, Andrey D. 1 Hendricks, Kyle J. 2; Affiliation: 1: Directed Energy Division, Raytheon Ktech, Advanced Security and Directed Energy Systems, Raytheon Missile Systems, Albuquerque, NM, USA 2: High-Power Microwave Division, Directed Energy Directorate, Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, NM, USA; Source Info: Feb2013, Vol. 41 Issue 2, p400; Subject Term: MAGNETRONS; Subject Term: RESEARCH; Subject Term: CATHODES; Subject Term: COMPUTER simulation; Subject Term: ELECTRIC fields -- Research; Subject Term: PLASMA (Ionized gases) -- Research; Author-Supplied Keyword: Anodes; Author-Supplied Keyword: Cathode priming; Author-Supplied Keyword: Cathodes; Author-Supplied Keyword: Cavity resonators; Author-Supplied Keyword: computer simulations; Author-Supplied Keyword: Gyrotrons; Author-Supplied Keyword: Magnetic resonance; Author-Supplied Keyword: metamaterial structures; Author-Supplied Keyword: Radio frequency; Author-Supplied Keyword: relativistic magnetron; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TPS.2013.2238558 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85358513&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Branch, Nathan A. AU - Arakere, Nagaraj K. AU - Forster, Nelson AU - Svendsen, Vaughn T1 - Critical stresses and strains at the spall edge of a case hardened bearing due to ball impact JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2013/02// VL - 47 M3 - Article SP - 268 EP - 278 SN - 01421123 AB - Abstract: Short spall propagation times of failing main shaft ball bearings of aircraft engines are a serious safety concern for single engine aircraft. Bearing designers would like to understand the impact of four variables namely (i) ball material density, (ii) subsurface residual stress, (iii) gradient in yield strength with depth (case hardening), and (iv) raceway surface hardness/yield strength that are thought to affect spall propagation. Extensive spall propagation experiments have been conducted at AFRL, Ohio in the past few years to address this issue. However, a detailed mechanistic analysis of these experiments has not been performed. This work presents an elastic–plastic finite element (FE) model that simulates a ball impacting a spall edge to determine the relative contributions of the four material variables on spall propagation. The magnitude and extent of damage of the spall edge material is determined based on critical stresses and plastic strains induced by the ball impact. The results indicate that the influence of ball density is greatest on inducing damage at the impacted spall edge when compared to the other three properties, which also agrees with the hybrid bearing spall propagation tests conducted at AFRL. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CASE hardening KW - STRAINS & stresses (Mechanics) KW - BALL-bearing screws KW - SPALLS KW - CRACK propagation (Fracture mechanics) KW - AIRPLANES -- Motors KW - Ball bearings KW - Case hardened steels KW - Finite elements KW - Rolling contact fatigue KW - Spall propagation N1 - Accession Number: 83653489; Branch, Nathan A. 1 Arakere, Nagaraj K. 2; Email Address: Nagaraj@ufl.edu Forster, Nelson 1 Svendsen, Vaughn 1; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, WPAFB, OH 45433, USA 2: Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, USA; Source Info: Feb2013, Vol. 47, p268; Subject Term: CASE hardening; Subject Term: STRAINS & stresses (Mechanics); Subject Term: BALL-bearing screws; Subject Term: SPALLS; Subject Term: CRACK propagation (Fracture mechanics); Subject Term: AIRPLANES -- Motors; Author-Supplied Keyword: Ball bearings; Author-Supplied Keyword: Case hardened steels; Author-Supplied Keyword: Finite elements; Author-Supplied Keyword: Rolling contact fatigue; Author-Supplied Keyword: Spall propagation; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ijfatigue.2012.09.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83653489&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hanchak, Michael S. AU - Briones, Alejandro M. AU - Ervin, Jamie S. AU - Byrd, Larry W. T1 - One-dimensional models of nanoliter droplet evaporation from a hot surface in the transition regime JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2013/02// VL - 57 IS - 2 M3 - Article SP - 473 EP - 483 SN - 00179310 AB - Abstract: A novel one-dimensional model of the evaporation of liquid water droplets from a hot surface is presented. The one-dimensional finite-difference model solves the governing equations of continuity, momentum, species and energy within the gaseous phase in spherical coordinates. The model includes the Hertz–Knudsen kinetic evaporative mass flux with a correction for the transitional regime that exists between continuum and molecular length-scales. The accommodation coefficient of the kinetic mass flux is constant and set to unity while the droplet thermal conductance is a multiple of the thermal conductivity of water. The model employs a uniform discretization of the spherical vapor region surrounding the droplet and a one-dimensional conduction model of the droplet itself. The model can also emulate pinned and de-pinned contact lines based on a geometric expression. Several theories of evaporative mass flux in the transition regime are compared. Droplet evaporation data is acquired with a standard dispensing/imaging system and high-speed photography. The calculated, transient droplet volumes are compared to experimental evaporation data of sessile droplets ranging from 30 to 80μm initial radius (0.06–1.4 nanoliters). Simplification of the one-dimensional equations leads to a semi-analytical model. Good agreement is achieved between both models and the experimental data. Results indicate that the evaporation process is a greater resistance to overall heat transfer than conduction through the droplet itself, which is consistent with the previous results of axisymmetric volume-of-fluid (VOF) models. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOFLUIDS KW - DROPS KW - EVAPORATION (Chemistry) KW - FINITE differences KW - PHASE transformations (Physics) KW - THERMAL conductivity KW - WATER -- Thermal properties KW - HIGH-speed photography KW - HEAT transfer KW - Accommodation coefficient KW - Droplet evaporation KW - Kinetic mass flux KW - One-dimensional model KW - Transition regime N1 - Accession Number: 84476764; Hanchak, Michael S. 1; Email Address: Michael.Hanchak.ctr@wpafb.af.mil Briones, Alejandro M. 1 Ervin, Jamie S. 1 Byrd, Larry W. 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0044, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Feb2013, Vol. 57 Issue 2, p473; Subject Term: NANOFLUIDS; Subject Term: DROPS; Subject Term: EVAPORATION (Chemistry); Subject Term: FINITE differences; Subject Term: PHASE transformations (Physics); Subject Term: THERMAL conductivity; Subject Term: WATER -- Thermal properties; Subject Term: HIGH-speed photography; Subject Term: HEAT transfer; Author-Supplied Keyword: Accommodation coefficient; Author-Supplied Keyword: Droplet evaporation; Author-Supplied Keyword: Kinetic mass flux; Author-Supplied Keyword: One-dimensional model; Author-Supplied Keyword: Transition regime; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2012.10.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84476764&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rankin, Brent A. AU - Blunck, David L. AU - Gore, Jay P.` T1 - Infrared Imaging and Spatiotemporal Radiation Properties of a Turbulent Nonpremixed Jet Flame and Plume. JO - Journal of Heat Transfer JF - Journal of Heat Transfer Y1 - 2013/02// VL - 135 IS - 2 M3 - Article SP - 1 EP - 11 SN - 00221481 AB - Radiation transfer from turbulent nonpremixed jet flames and plumes is important in many applications such as energy-efficient combustion systems, temperature sensitive pollutant control, and detection, control, and suppression of accidental fires. Combined spatial and temporal correlations of scalar values such as temperature and species concentrations affect the emitted radiation intensity. Spatiotemporal correlations and radiation intensity measurements downstream of the reacting parts of flames (plumes) have received limited attention. Motivated by this, planar time-dependent narrowband radiation intensity measurements are acquired of a turbulent nonpremixed flame and its plume using an infrared camera. Temporally and spatially correlated instantaneous realizations of local scalars and path integrated intensity values are calculated using a stochastic time and space series analysis, a narrowband radiation model, and the radia-tive transfer equation. The time-dependent infrared images reveal intermittent, low inten-sity regions in the plume characteristic of buoyancy-dominated transport. High radiation intensity structures are observed in the flame characteristic of momentum dominated flow and vorticity driven mixing. Normalized intensity fluctuations are nearly constant in the flame region, but increase by up to a factor of three in the plume. Normalized temporal correlations, power spectral density functions, and spatial correlations of the intensity are independent of the spatial location throughout both the flame and the plume. Spatial correlations of the radiation intensity exhibit approximately linear decay to half an inte-gral length scale followed by an exponential decrement. The radiation intensity fluctua-tions remain spatially correlated up to separation distances two times larger than the integral length scale. Space-time cross correlations of the intensity fluctuations are measured for the first time and are shown to be more isotropic in comparison to the prod-uct of the spatial and temporal correlations. This suggests that a correction factor should be applied to the space-time correlation model in future stochastic calculations to account for the anisotropy. The infrared imaging technique, illustrated in this paper, is promising to be a useful qualitative and quantitative nonintrusive technique for studying both reacting and nonreacting flows. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Heat Transfer is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT -- Radiation & absorption KW - TURBULENCE KW - SPATIOTEMPORAL processes KW - INFRARED imaging KW - CORRELATION (Statistics) KW - FLAME KW - JETS (Fluid dynamics) KW - STOCHASTIC analysis KW - flame radiation KW - infrared imaging KW - nonintrusive measurement KW - stochastic analysis KW - turbulent flames N1 - Accession Number: 85884716; Rankin, Brent A. 1; Email Address: brankin@purdue.edu Blunck, David L. 2; Email Address: david.blunck@wpatb.af.mil Gore, Jay P.` 1; Email Address: gore@purdue.edu; Affiliation: 1: Maurice J. Zucrow Laboratories, School of Mechanical Engineering, Purdue University, 500 Allison Road, West Lafayette, IN 47907 2: Combustion Branch, Propulsion Directorate, Air Force Research Laboratory, 1950 Fifth Street, WPAFB, OH 45433; Source Info: Feb2013, Vol. 135 Issue 2, p1; Subject Term: HEAT -- Radiation & absorption; Subject Term: TURBULENCE; Subject Term: SPATIOTEMPORAL processes; Subject Term: INFRARED imaging; Subject Term: CORRELATION (Statistics); Subject Term: FLAME; Subject Term: JETS (Fluid dynamics); Subject Term: STOCHASTIC analysis; Author-Supplied Keyword: flame radiation; Author-Supplied Keyword: infrared imaging; Author-Supplied Keyword: nonintrusive measurement; Author-Supplied Keyword: stochastic analysis; Author-Supplied Keyword: turbulent flames; Number of Pages: 11p; Document Type: Article L3 - 10.1115/1.4007609 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85884716&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parco, James E. AU - Levy, David A. T1 - The Rise and Fall of DADT. JO - Journal of Homosexuality JF - Journal of Homosexuality Y1 - 2013/02// VL - 60 IS - 2/3 M3 - Article SP - 147 EP - 151 SN - 00918369 AB - An introduction is presented in which the editors discuss various reports within the issue including "The President’s Pleasant Surprise: How LGBT Advocates Ended Don’t Ask, Don’t Tell," by Nathaniel Frank, "The Politics of Paranoia," by Aaron Belkin, and "OutServe: An Underground Network Stands Up," by Brenda Sue Fulton. KW - DON'T Ask, Don't Tell (Military policy) KW - LGBT people in the military N1 - Accession Number: 85588300; Parco, James E. 1; Email Address: jim.parco@coloradocollege.edu Levy, David A. 2; Affiliation: 1: Department of Economics and Business, Colorado College, Colorado Springs, Colorado, USA 2: Department of Management, United States Air Force Academy, Colorado Springs, Colorado, USA; Source Info: Feb2013, Vol. 60 Issue 2/3, p147; Subject Term: DON'T Ask, Don't Tell (Military policy); Subject Term: LGBT people in the military; Number of Pages: 5p; Document Type: Article L3 - 10.1080/00918369.2013.744663 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85588300&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parco, James E. AU - Levy, David A. T1 - Policy and Paradox: Grounded Theory at the Moment of DADT Repeal. JO - Journal of Homosexuality JF - Journal of Homosexuality Y1 - 2013/02// VL - 60 IS - 2/3 M3 - Article SP - 356 EP - 380 SN - 00918369 AB - Through a mixed-methods approach of oral history and grounded theory, we report on a study investigating the effects of the U.S. military's Don't Ask, Don't Tell policy on active-duty service members at the moment of transition to open service. A stratified, snowball sample of lesbian, gay, bisexual, and queer (LGBQ) service members (n = 17) from across all branches of the armed services were interviewed within two weeks of repeal (September 20, 2011). We find evidence that DADT was implicated in the structuring of military culture in terms of five irreconcilable contradictions: values, heroism, wartime, control, and silence. Military culture had moved in the direction of acceptance of LGBQ service members long before repeal, without the recognition of many leaders who had entered military service decades earlier. [ABSTRACT FROM PUBLISHER] AB - Copyright of Journal of Homosexuality is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DON'T Ask, Don't Tell (Military policy) KW - RESEARCH KW - LGBT people in the military KW - GROUNDED theory KW - MILITARY policy -- Social aspects KW - GAY military personnel -- United States -- Government policy KW - ORAL history KW - MIXED methods research KW - UNITED States KW - contradiction KW - DADT KW - Don't Ask Don't Tell KW - gay policy KW - grounded theory KW - interviews KW - LBGT KW - military culture KW - oral history KW - service members N1 - Accession Number: 85588311; Parco, James E. 1; Email Address: jim.parco@coloradocollege.edu Levy, David A. 2; Affiliation: 1: Department of Economics and Business, Colorado College, Colorado Springs, Colorado, USA 2: Department of Management, United States Air Force Academy, Colorado Springs, Colorado, USA; Source Info: Feb2013, Vol. 60 Issue 2/3, p356; Subject Term: DON'T Ask, Don't Tell (Military policy); Subject Term: RESEARCH; Subject Term: LGBT people in the military; Subject Term: GROUNDED theory; Subject Term: MILITARY policy -- Social aspects; Subject Term: GAY military personnel -- United States -- Government policy; Subject Term: ORAL history; Subject Term: MIXED methods research; Subject Term: UNITED States; Author-Supplied Keyword: contradiction; Author-Supplied Keyword: DADT; Author-Supplied Keyword: Don't Ask Don't Tell; Author-Supplied Keyword: gay policy; Author-Supplied Keyword: grounded theory; Author-Supplied Keyword: interviews; Author-Supplied Keyword: LBGT; Author-Supplied Keyword: military culture; Author-Supplied Keyword: oral history; Author-Supplied Keyword: service members; Number of Pages: 25p; Illustrations: 2 Charts; Document Type: Article L3 - 10.1080/00918369.2013.744925 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85588311&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Packard, Gary A. T1 - Unfriendly Fire: How the Gay Ban Undermines the Military and Weakens America by N. Frank. JO - Journal of Homosexuality JF - Journal of Homosexuality Y1 - 2013/02// VL - 60 IS - 2/3 M3 - Book Review SP - 458 EP - 461 SN - 00918369 AB - A review is presented of the book "Unfriendly Fire: How the Gay Ban Undermines the Military and Weakens America," by Nathaniel Frank. KW - GAY military personnel KW - GOVERNMENT policy KW - NONFICTION KW - UNITED States KW - FRANK, Nathaniel KW - UNFRIENDLY Fire: How the Gay Ban Undermines the Military & Weakens America (Book) N1 - Accession Number: 85588316; Packard, Gary A. 1; Email Address: gary.packard@usafa.edu; Affiliation: 1: Department of Behavioral Sciences and Leadership, United States Air Force Academy; Source Info: Feb2013, Vol. 60 Issue 2/3, p458; Subject Term: GAY military personnel; Subject Term: GOVERNMENT policy; Subject Term: NONFICTION; Subject Term: UNITED States; Reviews & Products: UNFRIENDLY Fire: How the Gay Ban Undermines the Military & Weakens America (Book); People: FRANK, Nathaniel; Number of Pages: 4p; Document Type: Book Review L3 - 10.1080/00918369.2013.744934 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85588316&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Samuels, Steven M. T1 - How We Won: Progressive Lessons from the Repeal of “Don't Ask, Don't Tell.” by A. Belkin. JO - Journal of Homosexuality JF - Journal of Homosexuality Y1 - 2013/02// VL - 60 IS - 2/3 M3 - Book Review SP - 474 EP - 477 SN - 00918369 AB - A review is presented of the electronic book "How We Won: Progressive Lessons From the Repeal of Don't Ask, Don't Tell," by Aaron Belkin, which discusses LGBT (lesbian, gay, bisexual, and transgender) military personnel and the repeal of the Don’t Ask, Don’t Tell (DADT) military policy. KW - DON'T Ask, Don't Tell (Military policy) KW - NONFICTION KW - BELKIN, Aaron KW - HOW We Won: Progressive Lessons From the Repeal of Don't Ask, Don't Tell (Book) N1 - Accession Number: 85588320; Samuels, Steven M. 1; Email Address: Steven.Samuels@usafa.edu; Affiliation: 1: Department of Behavioral Sciences and Leadership, United States Air Force Academy, Colorado Springs, CO, USA; Source Info: Feb2013, Vol. 60 Issue 2/3, p474; Subject Term: DON'T Ask, Don't Tell (Military policy); Subject Term: NONFICTION; Reviews & Products: HOW We Won: Progressive Lessons From the Repeal of Don't Ask, Don't Tell (Book); People: BELKIN, Aaron; Number of Pages: 4p; Document Type: Book Review L3 - 10.1080/00918369.2013.744939 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85588320&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sinha, V. AU - Spowart, J. T1 - Influence of interfacial carbide layer characteristics on thermal properties of copper-diamond composites. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2013/02// VL - 48 IS - 3 M3 - Article SP - 1330 EP - 1341 PB - Springer Science & Business Media B.V. SN - 00222461 AB - Copper-diamond composites are increasingly being considered for thermal management applications because of their attractive combination of properties, such as high thermal conductivity ( λ) and low coefficient of thermal expansion (CTE). In this research, thermal properties of Cu-diamond composites with two different types of interfacial carbides (CrC and SiC) were studied. The interface thermal conductance ( h) was calculated with Maxwell mean-field and differential effective medium schemes, wherein experimentally measured λ was entered as an input parameter. The λ and h of both the Cu-CrC-diamond and Cu-SiC-diamond composites are higher than those reported in previous studies for Cu-diamond composites with no interfacial carbides. The value of h is intimately related to the morphology and thickness of the interface carbide layer, with the highest h being associated with a thin and continuous interface carbide layer. A lower h resulting from a thicker CrC layer can provide an alternate explanation for a previously reported trend in λ of Cu-CrC-diamond composites with different Cr-contents. The experimentally measured CTE was compared with the Turner and Kerner model predictions. The CTE of both the Cu-CrC-diamond and Cu-SiC-diamond composites is lower and better matches the model predictions than the previously reported CTE of Cu-diamond composite with no interfacial carbides. The CTE of Cu-CrC-diamond composites agrees better with the Kerner model than the Turner model, which suggests that deformation during temperature excursions involves shear. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBIDES KW - THERMAL properties KW - METALLIC composites -- Thermal properties KW - COPPER KW - THERMAL conductivity KW - DIAMONDS KW - THERMAL expansion KW - DEFORMATIONS (Mechanics) KW - SHEAR (Mechanics) N1 - Accession Number: 84486938; Sinha, V.; Email Address: vikas.sinha@wpafb.af.mil Spowart, J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base 45433 USA; Source Info: Feb2013, Vol. 48 Issue 3, p1330; Subject Term: CARBIDES; Subject Term: THERMAL properties; Subject Term: METALLIC composites -- Thermal properties; Subject Term: COPPER; Subject Term: THERMAL conductivity; Subject Term: DIAMONDS; Subject Term: THERMAL expansion; Subject Term: DEFORMATIONS (Mechanics); Subject Term: SHEAR (Mechanics); NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 414410 Jewellery and watch merchant wholesalers; NAICS/Industry Codes: 423940 Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers; Number of Pages: 12p; Illustrations: 2 Black and White Photographs, 5 Charts, 2 Graphs; Document Type: Article L3 - 10.1007/s10853-012-6878-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84486938&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gee, Kent L. AU - Neilsen, Tracianne B. AU - Downing, J. Micah AU - James, Michael M. AU - McKinley, Richard L. AU - McKinley, Robert C. AU - Wall, Alan T. T1 - Near-field shock formation in noise propagation from a high-power jet aircraft. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2013/02// VL - 133 IS - 2 M3 - Article SP - EL88 EP - EL93 SN - 00014966 AB - Noise measurements near the F-35A Joint Strike Fighter at military power are analyzed via spatial maps of overall and band pressure levels and skewness. Relative constancy of the pressure waveform skewness reveals that waveform asymmetry, characteristic of supersonic jets, is a source phenomenon originating farther upstream than the maximum overall level. Conversely, growth of the skewness of the time derivative with distance indicates that acoustic shocks largely form through the course of near-field propagation and are not generated explicitly by a source mechanism. These results potentially counter previous arguments that jet 'crackle' is a source phenomenon. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - F-35 (Military aircraft) KW - JET fighter planes KW - SKEWNESS (Probability theory) KW - WAVE analysis KW - NEAR-fields N1 - Accession Number: 85189536; Gee, Kent L. 1 Neilsen, Tracianne B. 1 Downing, J. Micah 2 James, Michael M. 2 McKinley, Richard L. 3 McKinley, Robert C. 3 Wall, Alan T. 4; Affiliation: 1: Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602 kentgee@byu.edu, tbn@byu.edu 2: Blue Ridge Research and Consulting, LLC, Asheville, North Carolina 28801 micah.downing@blueridgeresearch.com, michael.james@blueridgeresearch.com 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio, 45433 richard.mckinley@wpafb.af.mil, robert.mckinley@wpafb.af.mil 4: Department of Physics and Astronomy, Brigham Young University, Provo, Utah, 84602 alantwall@gmail.com; Source Info: Feb2013, Vol. 133 Issue 2, pEL88; Subject Term: F-35 (Military aircraft); Subject Term: JET fighter planes; Subject Term: SKEWNESS (Probability theory); Subject Term: WAVE analysis; Subject Term: NEAR-fields; Number of Pages: 6p; Document Type: Article L3 - 10.1121/1.4773225 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85189536&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abdel-Motaleb, Ibrahim AU - Akula, Bhavya AU - Leedy, Kevin AU - Cortez, Rebecca T1 - Oxygen effects on barium strontium titanate morphology and MOS device performance JO - Materials Letters JF - Materials Letters Y1 - 2013/02// VL - 92 M3 - Article SP - 389 EP - 392 SN - 0167577X AB - Abstract: We report on oxygen''s impact on the morphology of pulsed laser deposited barium strontium titanate (BST) thin films, and the influence of microstructure on fabricated BST capacitor''s electrical properties. Variations in the O2 chamber environment yielded distinct microstructures and dielectric constant values. The BST film deposited in a lower O2 pressure environment was found to be polycrystalline with sharp grain boundaries, while a higher O2 pressure environment film exhibited enhanced lateral growth and diffuse grain boundaries. The sample deposited in a higher O2 pressure environment was found to exhibit low frequency characteristics in capacitance–voltage measurements even at 1MHz. The sample deposited in a lower O2 pressure environment was found to exhibit high frequency capacitance–voltage characteristics even at 1kHz. The 1mTorr O2 environment devices yielded a dielectric constant of 432 compared with 32 for the 10mTorr environment film. [Copyright &y& Elsevier] AB - Copyright of Materials Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL oxide semiconductors -- Performance KW - OXYGEN KW - BARIUM strontium titanate KW - PULSED laser deposition KW - THIN films KW - MICROSTRUCTURE KW - MICROFABRICATION KW - Atomic force microscopy KW - Electrical properties KW - Physical vapor deposition N1 - Accession Number: 84552191; Abdel-Motaleb, Ibrahim 1 Akula, Bhavya 1 Leedy, Kevin 2 Cortez, Rebecca 3; Email Address: cortezr@union.edu; Affiliation: 1: Department of Electrical Engineering, Northern Illinois University, DeKalb, IL 60115, USA 2: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 3: Department of Mechanical Engineering, Union College, Schenectady, NY 12308, USA; Source Info: Feb2013, Vol. 92, p389; Subject Term: METAL oxide semiconductors -- Performance; Subject Term: OXYGEN; Subject Term: BARIUM strontium titanate; Subject Term: PULSED laser deposition; Subject Term: THIN films; Subject Term: MICROSTRUCTURE; Subject Term: MICROFABRICATION; Author-Supplied Keyword: Atomic force microscopy; Author-Supplied Keyword: Electrical properties; Author-Supplied Keyword: Physical vapor deposition; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.matlet.2012.11.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84552191&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Taekyung AU - Kim, Jae Hyung AU - Semiatin, S.L. AU - Lee, Chong Soo T1 - Internal-variable analysis of high-temperature deformation behavior of Ti–6Al–4V: A comparative study of the strain-rate-jump and load-relaxation tests JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2013/02// VL - 562 M3 - Article SP - 180 EP - 189 SN - 09215093 AB - Abstract: The high-temperature deformation mechanisms of Ti–6Al–4V with either a fine or coarse alpha particle size were quantified using an internal-variable theory. For this purpose, strain rate jump tests (SRJT) and load relaxation tests (LRT) were conducted at 700, 800, and 900°C to determine the strain rate sensitivity and to establish constitutive behavior. Stress–strain rate plots obtained by both SRJT and LRT were in good agreement with the theoretical predictions based on the activation of grain-matrix deformation and particle/grain-boundary sliding (P/GBS). The relative contribution of the two mechanisms varied with the microstructure, temperature, and strain rate, which affected the flow stress and strain rate sensitivity of the alloys. A clear difference in the strain rate sensitivity was observed depending on the experimental method. In all cases, the SRJT values were higher than those from the LRT. The discrepancy in strain rate sensitivity could be attributed to a variation in prestrain between the two methods. This variation resulted in microstructural differences, such as the fraction of alpha/beta interfaces and the misorientation of alpha grain boundaries, and hence affected the contribution of P/GBS to the overall deformation. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEFORMATIONS (Mechanics) KW - TITANIUM alloys KW - TEMPERATURE effect KW - STRAINS & stresses (Mechanics) KW - AXIAL loads KW - VARIABLES (Mathematics) KW - COMPARATIVE studies KW - Constitutive modeling KW - Grain boundary sliding KW - High-temperature deformation KW - Mechanical characterization KW - Superplasticity KW - Titanium alloys N1 - Accession Number: 84764886; Lee, Taekyung 1 Kim, Jae Hyung 2 Semiatin, S.L. 3 Lee, Chong Soo 1,2; Email Address: cslee@postech.ac.kr; Affiliation: 1: Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Republic of Korea 2: Graduate Institute of Ferrous Technology (GIFT), Pohang University of Science and Technology (POSTECH), Pohang 790-784, Republic of Korea 3: Air Force Research Laboratory, AFRL/RXCM, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Feb2013, Vol. 562, p180; Subject Term: DEFORMATIONS (Mechanics); Subject Term: TITANIUM alloys; Subject Term: TEMPERATURE effect; Subject Term: STRAINS & stresses (Mechanics); Subject Term: AXIAL loads; Subject Term: VARIABLES (Mathematics); Subject Term: COMPARATIVE studies; Author-Supplied Keyword: Constitutive modeling; Author-Supplied Keyword: Grain boundary sliding; Author-Supplied Keyword: High-temperature deformation; Author-Supplied Keyword: Mechanical characterization; Author-Supplied Keyword: Superplasticity; Author-Supplied Keyword: Titanium alloys; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.msea.2012.11.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84764886&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Poggie, J. AU - Adamovich, I. AU - Bisek, N. AU - Nishihara, M. T1 - Numerical simulation of nanosecond-pulse electrical discharges. JO - Plasma Sources Science & Technology JF - Plasma Sources Science & Technology Y1 - 2013/02// VL - 22 IS - 1 M3 - Article SP - 1 EP - 17 SN - 09630252 AB - Recent experiments with a nanosecond-pulse, dielectric barrier discharge at the stagnation point of a Mach 5 cylinder flow have demonstrated the formation of weak shock waves near the electrode edge, which propagate upstream and perturb the bow shock. This is a promising means of flow control, and understanding the detailed physics of the conversion of electrical energy into gas motion will aid in the design of efficient actuators based on the concept. In this work, a simplified configuration with planar symmetry was chosen as a vehicle to develop a physics-based model of nanosecond-pulse discharges, including realistic air kinetics, electron energy transport, and compressible bulk gas flow. A reduced plasma kinetic model (23 species and 50 processes) was developed to capture the dominant species and reactions for energy storage and thermalization in the discharge. The kinetic model included electronically and vibrationally excited species, and several species of ions and ground state neutrals. The governing equations included the Poisson equation for the electric potential, diffusion equations for each neutral species, conservation equations for each charged species, and mass-averaged conservation equations for the bulk gas flow. The results of calculations with this model highlighted the path of energy transfer in the discharge. At breakdown, the input electrical energy was transformed over a time scale on the order of 1 ns into chemical energy of ions, dissociation products, and vibrationally and electronically excited particles. About 30% of this energy was subsequently thermalized over a time scale of 10µs. Since the thermalization time scale was faster than the acoustic time scale, the heat release led to the formation of weak shock waves originating near the sheath edge, consistent with experimental observations. The computed translational temperature rise (40 K) and nitrogen vibrational temperature rise (370 K) were of the same order of magnitude as experimental measurements (50K and 500 K, respectively), and the approach appears promising for future multi-dimensional calculations. The effectiveness of flow control actuators based on nanosecond-pulse, dielectric barrier discharges is seen to depend crucially on the rapid thermalization of input energy, in particular the rate of quenching of excited electronic states and the rate of electron-ion recombination. [ABSTRACT FROM AUTHOR] AB - Copyright of Plasma Sources Science & Technology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER simulation KW - ELECTRIC discharges KW - PULSED lasers KW - SCIENTIFIC experimentation KW - DIELECTRICS KW - STAGNATION point KW - SHOCK waves KW - ELECTRICAL energy N1 - Accession Number: 84747565; Poggie, J. 1 Adamovich, I. 2 Bisek, N. 1 Nishihara, M. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7512, USA 2: Department of Mechanical Engineering, Ohio State University, Columbus, OH 43210, USA; Source Info: Feb2013, Vol. 22 Issue 1, p1; Subject Term: COMPUTER simulation; Subject Term: ELECTRIC discharges; Subject Term: PULSED lasers; Subject Term: SCIENTIFIC experimentation; Subject Term: DIELECTRICS; Subject Term: STAGNATION point; Subject Term: SHOCK waves; Subject Term: ELECTRICAL energy; Number of Pages: 17p; Document Type: Article L3 - 10.1088/0963-0252/22/1/015001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84747565&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aarons, Lee R. AU - Balachandar, S. AU - Horie, Yasuyuki T1 - The mixing of cohesive granular materials featuring a large size range in the absence of gravity JO - Powder Technology JF - Powder Technology Y1 - 2013/02// VL - 235 M3 - Article SP - 18 EP - 26 SN - 00325910 AB - Abstract: We have studied the shear mixing of bidisperse collections of cohesive particles in an effort to develop models that would allow one to predict and control the homogeneity of particle composites. Our focus has been on the effects of interparticle cohesion and shear rate on the microstructure of particle composites. Furthermore, we have focused on particles that have a “large size range,” specifically a 7:1 diameter ratio, such that homogeneous mixtures would include the small particles filling in the gaps formed between big particles, resulting in a correlation between the packing fraction and mixing quality. As a model problem, the cohesion resulting from the van der Waals force acting between particles was considered. Simulations were performed in which initially segregated bidisperse collections of particles were subjected to plane shear under constant applied stress as a method of mixing. Gravity was ignored in these simulations so that the different particles were not driven to different sides of the mixtures and the only hindrance to homogeneous mixing was cohesion. Simulations were performed with a variety of shear rates and particle cohesion strengths for both the large and small particles, and the homogeneity of the resultant mixtures was quantified using two distinct statistics: the estimated mean size of small-particle clusters and the spatial variance in the relative concentrations of the small and large particles. Microstructure images of the mixtures were used to provide additional qualitative measure of homogeneity as well as a measure of the relevance of the order statistics. These data suggested that the cohesiveness (Hamaker constant) of the small particles had the strongest influence on the mixture''s homogeneity. When the small particles were not sufficiently cohesive, they did not significantly agglomerate, and so the resulting mixtures were relatively homogeneous over the range of shear rates and Hamaker constants of the big particles explored here. When the small particles were more cohesive, the small particles formed strong agglomerates and the mixtures become significantly inhomogeneous at lower shear rates. Somewhat surprisingly in these cases, better mixing was not achieved by simply making the large particles less cohesive. Rather, reducing the cohesiveness of the large particles far enough caused the large particles to pack more tightly, making the small-particle agglomerates unable to fit in between them, ultimately resulting in worse mixing. As such, the best mixing in these cases was achieved when the big particles were moderately cohesive. A correlation between solid volume fraction and homogeneity was not observed when particle cohesion was varied, as making either the small or large particles more cohesive led to a decrease in solid volume fraction, regardless of the effect on homogeneity. On the other hand, when homogeneity was found to increase with shear rate, so did the solid volume fraction. [Copyright &y& Elsevier] AB - Copyright of Powder Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRANULAR materials KW - MIXING KW - GRAVITY KW - SHEAR (Mechanics) KW - PARTICLES KW - COMPOSITE materials KW - Cohesion KW - Discrete element simulation KW - Mixing KW - Shear flow of powders N1 - Accession Number: 85420084; Aarons, Lee R. 1; Email Address: aarons2@llnl.gov Balachandar, S. 1 Horie, Yasuyuki 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL 32611, USA 2: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, USA; Source Info: Feb2013, Vol. 235, p18; Subject Term: GRANULAR materials; Subject Term: MIXING; Subject Term: GRAVITY; Subject Term: SHEAR (Mechanics); Subject Term: PARTICLES; Subject Term: COMPOSITE materials; Author-Supplied Keyword: Cohesion; Author-Supplied Keyword: Discrete element simulation; Author-Supplied Keyword: Mixing; Author-Supplied Keyword: Shear flow of powders; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.powtec.2012.09.044 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85420084&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hassan, Ez AU - Boles, John AU - Aono, Hikaru AU - Davis, Douglas AU - Shyy, Wei T1 - Supersonic jet and crossflow interaction: Computational modeling JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences Y1 - 2013/02// VL - 57 M3 - Article SP - 1 EP - 24 SN - 03760421 AB - Abstract: The supersonic jet-in-crossflow problem which involves shocks, turbulent mixing, and large-scale vortical structures, requires special treatment for turbulence to obtain accurate solutions. Different turbulence modeling techniques are reviewed and compared in terms of their performance in predicting results consistent with the experimental data. Reynolds-averaged Navier–Stokes (RANS) models are limited in prediction of fuel structure due to their inability to accurately capture unsteadiness in the flow. Large eddy simulation (LES) is not yet practical due to prohibitively large grid requirement near the wall. Hybrid RANS/LES can offer reasonable compromise between accuracy and efficiency. The hybrid models are based on various approaches such as explicit blending of RANS and LES, detached eddy simulation (DES), and filter-based multi-scale models. In particular, they can be used to evaluate the turbulent Schmidt number modeling techniques used in jet-in-crossflow simulations. Specifically, an adaptive approach can be devised by utilizing the information obtained from the resolved field to help assign the value of turbulent Schmidt number in the sub-filter field. The adaptive approach combined with the multi-scale model improves the results especially when highly refined grids are needed to resolve small structures involved in the mixing process. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERSONIC planes KW - JET planes KW - COMPUTER simulation KW - CROSS-flow (Aerodynamics) KW - TURBULENCE KW - MULTISCALE modeling KW - Computational modeling KW - Jet and crossflow interactions KW - Supersonic flows N1 - Accession Number: 86393755; Hassan, Ez 1,2 Boles, John 3 Aono, Hikaru 4 Davis, Douglas 2 Shyy, Wei 1,5; Email Address: weishyy@ust.hk; Affiliation: 1: Department of Aerospace Engineering, University of Michigan, Ann Arbor, MI, USA 2: Air Force Research Laboratory, Fairborn, OH, USA 3: Taitech, Inc., Beavercreek, OH, USA 4: Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan 5: The Hong Kong University of Science and Technology, Kowloon, Hong Kong; Source Info: Feb2013, Vol. 57, p1; Subject Term: SUPERSONIC planes; Subject Term: JET planes; Subject Term: COMPUTER simulation; Subject Term: CROSS-flow (Aerodynamics); Subject Term: TURBULENCE; Subject Term: MULTISCALE modeling; Author-Supplied Keyword: Computational modeling; Author-Supplied Keyword: Jet and crossflow interactions; Author-Supplied Keyword: Supersonic flows; Number of Pages: 24p; Document Type: Article L3 - 10.1016/j.paerosci.2012.06.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86393755&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Farino, Jether C. AU - Joshi, Kaustubh G. T1 - Psychiatric Advance Directives: What Psychiatrists Need to Know Now. JO - Psychiatric Times JF - Psychiatric Times Y1 - 2013/02// VL - 30 IS - 2 M3 - Article SP - 28 EP - 30 SN - 08932905 AB - The article focuses on the application of psychiatric advance directives (PADs). It states that PADs focuses on self-determination of patient regarding medical and psychiatric care. It further informs that PADs increase autonomy in a person with mental illness and decrease coercion and further discusses the elements, types, and clinical implications of PADs. KW - ADVANCE directives (Medical care) -- Law & legislation KW - PATIENTS -- Legal status, laws, etc. KW - PSYCHIATRISTS KW - PSYCHIATRY KW - WORLD Wide Web KW - ADVANCE directives (Medical care) KW - CONTINUING education units KW - UNITED States N1 - Accession Number: 85635561; Farino, Jether C. 1 Joshi, Kaustubh G. 2; Affiliation: 1: General Psychiatry Resident, United States Air Force, Wilford Hall Medical Center, University of Texas Health Science Center, San Antonio 2: Adjunct Associate Professor, University of Texas Health Science Center, San Antonio; Source Info: Feb2013, Vol. 30 Issue 2, p28; Subject Term: ADVANCE directives (Medical care) -- Law & legislation; Subject Term: PATIENTS -- Legal status, laws, etc.; Subject Term: PSYCHIATRISTS; Subject Term: PSYCHIATRY; Subject Term: WORLD Wide Web; Subject Term: ADVANCE directives (Medical care); Subject Term: CONTINUING education units; Subject Term: UNITED States; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; Number of Pages: 3p; Document Type: Article; Full Text Word Count: 2749 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85635561&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - El-Awady, Jaafar A. AU - Uchic, Michael D. AU - Shade, Paul A. AU - Kim, Sang-Lan AU - Rao, Satish I. AU - Dimiduk, Dennis M. AU - Woodward, Christopher T1 - Pre-straining effects on the power-law scaling of size-dependent strengthening in Ni single crystals JO - Scripta Materialia JF - Scripta Materialia Y1 - 2013/02// VL - 68 IS - 3/4 M3 - Article SP - 207 EP - 210 SN - 13596462 AB - We report experimental and three-dimensional discrete dislocation dynamics measurements to characterize the effect of high starting dislocation density on size-affected flow. Microcrystals were focused ion beam milled into a pre-strained bulk Ni single crystal to obtain a dense heterogeneous dislocation cell structure. The strength-scaling exponent is shown to decreases considerably with increasing dislocation density. Cutting the pre-existing forest during microcrystal fabrication can lead to alternate pathways for the advancing slipped areas to defeat the forest, resulting in a lower strength than the pre-strained bulk crystal. [ABSTRACT FROM AUTHOR] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SINGLE crystals KW - NICKEL KW - DISLOCATIONS in crystals KW - STRENGTH of materials KW - CRYSTAL structure KW - MICROFABRICATION KW - Discrete dislocation dynamics KW - Dislocation density KW - Nickel microcrystals KW - Pre-straining KW - Size effects N1 - Accession Number: 83573860; El-Awady, Jaafar A. 1; Email Address: jelawady@jhu.edu Uchic, Michael D. 2 Shade, Paul A. 2 Kim, Sang-Lan 3 Rao, Satish I. 3 Dimiduk, Dennis M. 2 Woodward, Christopher 2; Affiliation: 1: Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 3: UES Inc., Dayton, OH, USA; Source Info: Feb2013, Vol. 68 Issue 3/4, p207; Subject Term: SINGLE crystals; Subject Term: NICKEL; Subject Term: DISLOCATIONS in crystals; Subject Term: STRENGTH of materials; Subject Term: CRYSTAL structure; Subject Term: MICROFABRICATION; Author-Supplied Keyword: Discrete dislocation dynamics; Author-Supplied Keyword: Dislocation density; Author-Supplied Keyword: Nickel microcrystals; Author-Supplied Keyword: Pre-straining; Author-Supplied Keyword: Size effects; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2012.10.035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83573860&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ying Huang, Shao AU - Wu, Bae-Ian AU - Foong, Shaohui T1 - Surface-enhanced Raman scattering enhancement factor distribution for nanoparticles of arbitrary shapes using surface integral equation method. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/01/28/ VL - 113 IS - 4 M3 - Article SP - 044304 EP - 044304-7 PB - American Institute of Physics SN - 00218979 AB - Poggio-Miller-Chang-Harrington-Wu-Tsai (PMCHWT) surface integral equation method is applied for the first time to accurately estimate the surface-enhanced Raman scattering (SERS) enhancement factor distribution for arbitrary nanoparticles and nano-aggregates. It is the first time in literature that the distributions of SERS enhancement factors of nanoparticles of a large variety are reported. It is shown that not every SERS substrate exhibits a long-tail distribution as a dimer consisting of two spheres in close proximity. Generic methods are proposed to evaluate the performance of nanoparticles on SERS substrates. A cumulative distribution is proposed to examine the contributions of hot and warm spots around the nanoparticles. It is used to identify the importance of warm spots on a SERS substrate. A parameter q is proposed to describe the likelihood of a randomly positioned molecule that can be activated. This study provides guidance and insights for the optimization of SERS substrate fabrication techniques. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN effect KW - FUNCTIONAL equations KW - NANOPARTICLES KW - SUBSTRATES (Materials science) KW - INTEGRAL equations N1 - Accession Number: 85209058; Ying Huang, Shao 1,2 Wu, Bae-Ian 3 Foong, Shaohui 2; Affiliation: 1: Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, 2: Singapore University of Technology and Design, 3: Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433,; Source Info: Jan2013, Vol. 113 Issue 4, p044304; Subject Term: RAMAN effect; Subject Term: FUNCTIONAL equations; Subject Term: NANOPARTICLES; Subject Term: SUBSTRATES (Materials science); Subject Term: INTEGRAL equations; Number of Pages: 1p; Illustrations: 3 Color Photographs, 2 Charts, 9 Graphs; Document Type: Article L3 - 10.1063/1.4789022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85209058&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lewis, W. K. AU - Rumchik, C. G. AU - Smith, M. J. AU - Fernando, K. A. S. AU - Crouse, C. A. AU - Spowart, J. E. AU - Guliants, E. A. AU - Bunker, C. E. T1 - Comparison of post-detonation combustion in explosives incorporating aluminum nanoparticles: Influence of the passivation layer. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/01/28/ VL - 113 IS - 4 M3 - Article SP - 044907 EP - 044907-5 PB - American Institute of Physics SN - 00218979 AB - Aluminum nanoparticles and explosive formulations that incorporate them have been a subject of ongoing interest due to the potential of aluminum particles to dramatically increase energy content relative to conventional organic explosives. We have used time-resolved atomic and molecular emission spectroscopy to monitor the combustion of aluminum nanoparticles within the overall chemical dynamics of post-detonation fireballs. We have studied the energy release dynamics of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) charges incorporating three types of aluminum nanoparticles: commercial oxide-passivated nanoparticles, oleic acid-capped aluminum nanoparticles (AlOA), and nanoparticles in which the oxide shell of the particle has been functionalized with an acrylic monomer and copolymerized into a fluorinated acrylic matrix (AlFA). The results indicate that the commercial nanoparticles and the AlFA nanoparticles are oxidized at a similar rate, while the AlOA nanoparticles combust more quickly. This is most likely due to the fact that the commercial nano-Al and the AlFA particles are both oxide-passivated, while the AlOA particles are protected by an organic shell that is more easily compromised than an oxide layer. The peak fireball temperatures for RDX charges containing 20 wt. % of commercial nano-Al, AlFA, or AlOA were ∼3900 K, ∼3400 K, and ∼4500 K, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - EXPLOSIVES KW - MOLECULAR spectroscopy KW - EMISSION spectroscopy KW - MONOMERS KW - COPOLYMERS KW - COPOLYMERIZATION N1 - Accession Number: 85209068; Lewis, W. K. 1 Rumchik, C. G. 2 Smith, M. J. 3 Fernando, K. A. S. 1 Crouse, C. A. 4,5 Spowart, J. E. 4 Guliants, E. A. 1 Bunker, C. E. 3; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469, 2: U.S. Air Force Research Laboratory, Munitions Directorate, Eglin AFB, Florida 32542, 3: U.S. Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, Ohio 45433, 4: U.S. Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433, 5: UES, Inc., Dayton, Ohio 45432,; Source Info: Jan2013, Vol. 113 Issue 4, p044907; Subject Term: NANOPARTICLES; Subject Term: EXPLOSIVES; Subject Term: MOLECULAR spectroscopy; Subject Term: EMISSION spectroscopy; Subject Term: MONOMERS; Subject Term: COPOLYMERS; Subject Term: COPOLYMERIZATION; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 1p; Illustrations: 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.4790159 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85209068&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blackshire, James L. T1 - Forward and backscatter energy field patterns from localized damage sites. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2013/01/24/ VL - 1511 IS - 1 M3 - Article SP - 91 EP - 98 PB - American Institute of Physics SN - 0094243X AB - The scattering of ultrasound energy from localized damage sites has been studied extensively by numerous researchers and is of significant interest for quantitative NDE. Damage detection and basic sizing information have, for example, been provided using scattered energy reflection and transmission levels, time-of-flight signal analysis, crack-tip diffraction, and many other methods. In the present effort, finite element models and experimental measurements are used to understand edge diffraction effects, which can impact both the detection and accurate sizing of damage features. The results suggest that edge diffraction can generate localized energy fields in the forward and backscatter directions, causing signal content to vary. A simple analytic explanation of the observed effects is provided along with potential implications for damage characterization - both positive and negative. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BACKSCATTERING KW - FORCE & energy KW - NONDESTRUCTIVE testing KW - SIGNAL processing KW - FRACTURE mechanics KW - FINITE element method N1 - Accession Number: 85094167; Blackshire, James L. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433,; Source Info: Jan2013, Vol. 1511 Issue 1, p91; Subject Term: BACKSCATTERING; Subject Term: FORCE & energy; Subject Term: NONDESTRUCTIVE testing; Subject Term: SIGNAL processing; Subject Term: FRACTURE mechanics; Subject Term: FINITE element method; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Illustrations: 2 Color Photographs, 2 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.4789035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85094167&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nalladega, V. AU - Sathish, S. AU - Blodgett, M. T1 - Investigation of acoustic fields generated by eddy currents using an atomic force microscope. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2013/01/24/ VL - 1511 IS - 1 M3 - Article SP - 449 EP - 455 PB - American Institute of Physics SN - 0094243X AB - This paper reports the experimental measurement and imaging of the acoustic fields generated by low-frequency eddy currents in metals in the absence of an external static magnetic field using a modified atomic force microscope. Acoustic displacements in a typical metal placed in eddy current field without static magnetic field were theoretically computed and found to be in the range of few hundred picometers. A modified atomic force microscope was used to detect and measure the acoustic displacements in a single crystal copper. The setup was also used to image acoustic fields in a titanium alloy sample. Details of the modified AFM to measure and image acoustic displacements are presented. The role of electrical and elastic properties on the contrast in acoustic images of Ti-6Al-4V sample is discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - ATOMIC force microscopes KW - ACOUSTIC imaging KW - MAGNETIC fields KW - SINGLE crystals KW - TITANIUM alloys N1 - Accession Number: 85094234; Nalladega, V. 1 Sathish, S. 1 Blodgett, M. 2; Affiliation: 1: Structural Integrity Division, University of Dayton Research Institute, 300 College Park, Dayton OH 45469, 2: Metals, Ceramics, and NDE Division, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433,; Source Info: Jan2013, Vol. 1511 Issue 1, p449; Subject Term: EDDY currents (Electric); Subject Term: ATOMIC force microscopes; Subject Term: ACOUSTIC imaging; Subject Term: MAGNETIC fields; Subject Term: SINGLE crystals; Subject Term: TITANIUM alloys; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 7p; Illustrations: 1 Color Photograph, 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1063/1.4789082 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85094234&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Motes, Doyle AU - Forsyth, David S. AU - Steffes, Gary T1 - Enhanced image processing methods for GMR array inspections of multilayer metallic structures. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2013/01/24/ VL - 1511 IS - 1 M3 - Article SP - 699 EP - 706 PB - American Institute of Physics SN - 0094243X AB - The objective of this paper is to present a comprehensive approach to image processing for Giant Magnetoresistive (GMR) array sensors with sheet current sources for the inspection of fatigue cracks in complex metallic structures. The approach incorporates optimal phase angle adjustment, array sensitivity compensation, fastener site identification, an adaptive edge evaluation and removal algorithm and a classification metric. Processing examples are presented that highlight the benefits of these algorithms for improving crack detection for challenging edge and fastener spacing conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMAGE processing KW - MAGNETORESISTANCE KW - ENGINEERING inspection KW - DETECTORS KW - FATIGUE crack growth KW - FASTENERS KW - ALGORITHMS N1 - Accession Number: 85094223; Aldrin, John C. 1 Motes, Doyle 2 Forsyth, David S. 2 Steffes, Gary 3; Affiliation: 1: Computational Tools, Gurnee, IL 60031, 2: TRI/Austin, Austin, TX 78746, 3: Air Force Research Laboratory (AFRL/RXLP), Wright-Patterson AFB, OH 45433,; Source Info: Jan2013, Vol. 1511 Issue 1, p699; Subject Term: IMAGE processing; Subject Term: MAGNETORESISTANCE; Subject Term: ENGINEERING inspection; Subject Term: DETECTORS; Subject Term: FATIGUE crack growth; Subject Term: FASTENERS; Subject Term: ALGORITHMS; NAICS/Industry Codes: 339993 Fastener, Button, Needle, and Pin Manufacturing; NAICS/Industry Codes: 423710 Hardware Merchant Wholesalers; NAICS/Industry Codes: 416330 Hardware merchant wholesalers; NAICS/Industry Codes: 332722 Bolt, Nut, Screw, Rivet, and Washer Manufacturing; NAICS/Industry Codes: 339990 All other miscellaneous manufacturing; NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 812922 One-Hour Photofinishing; Number of Pages: 8p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1063/1.4789114 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85094223&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dierken, Josiah AU - Aldrin, John C. AU - Holec, Robert AU - LaCivita, Michael AU - Shearer, Joshua AU - Lindgren, Eric T1 - Progress in defect quantification in multi-layered structures using ultrasonic inspection. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2013/01/24/ VL - 1511 IS - 1 M3 - Article SP - 769 EP - 776 PB - American Institute of Physics SN - 0094243X AB - This study investigates the ability to resolve flaws in aluminum panel stackups representative of aircraft structural components. Using immersion ultrasound techniques, the specimens were examined for known fatigue cracks and electric discharge machined (EDM) notches at various fastener sites. Initial assessments suggested a possible trend between measured ultrasound parameters of flaw intensity and size, and known physical defect length. To improve analytical reliability and efficiency, development of automated data analysis (ADA) algorithms has been initiated. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRASONIC testing KW - ENGINEERING inspection KW - ALUMINUM plates KW - STRUCTURAL engineering KW - ELECTRIC metal-cutting KW - RELIABILITY (Engineering) KW - DATA analysis N1 - Accession Number: 85094173; Dierken, Josiah 1 Aldrin, John C. 2 Holec, Robert 3 LaCivita, Michael 4 Shearer, Joshua 4 Lindgren, Eric 4; Affiliation: 1: Southwestern Ohio Council for Higher Education, Dayton, OH 45420, 2: Computational Tools, Gurnee, IL 60031, 3: Iowa State University, Ames, IA 50011, 4: Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, 45433,; Source Info: Jan2013, Vol. 1511 Issue 1, p769; Subject Term: ULTRASONIC testing; Subject Term: ENGINEERING inspection; Subject Term: ALUMINUM plates; Subject Term: STRUCTURAL engineering; Subject Term: ELECTRIC metal-cutting; Subject Term: RELIABILITY (Engineering); Subject Term: DATA analysis; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 331315 Aluminum Sheet, Plate, and Foil Manufacturing; Number of Pages: 8p; Illustrations: 5 Color Photographs, 3 Diagrams, 1 Chart; Document Type: Article L3 - 10.1063/1.4789123 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85094173&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, M. Y. AU - Ko, R. T. AU - Hoppe, W. C. AU - Blackshire, J. L. T1 - Ultrasonic assessment of bonding integrity in foam-based hybrid composite materials. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2013/01/24/ VL - 1511 IS - 1 M3 - Article SP - 995 EP - 1002 PB - American Institute of Physics SN - 0094243X AB - Ultrasonic assessment of the bonding integrity between a composite layer and a foam substrate in foam-based hybrid composite materials was explored. The challenges of this task are: (1) the foam has air-like acoustic impedance and (2) contact surface wave generation on polymer matrix composites (PMC) is not conventional. To meet these challenges, a novel wedge made of a low velocity material was developed. The results showed that the bonding condition in these composites can be identified by monitoring the amplitude of the ultrasonic signals received. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRASONIC testing KW - ADHESIVES KW - COMPOSITE materials KW - FOAM KW - ACOUSTIC impedance KW - POLYMERIC composites KW - SIGNAL processing N1 - Accession Number: 85094227; Chen, M. Y. 1 Ko, R. T. 2 Hoppe, W. C. 2 Blackshire, J. L. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, 2: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469,; Source Info: Jan2013, Vol. 1511 Issue 1, p995; Subject Term: ULTRASONIC testing; Subject Term: ADHESIVES; Subject Term: COMPOSITE materials; Subject Term: FOAM; Subject Term: ACOUSTIC impedance; Subject Term: POLYMERIC composites; Subject Term: SIGNAL processing; NAICS/Industry Codes: 325520 Adhesive Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; Number of Pages: 8p; Illustrations: 4 Color Photographs, 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.4789152 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85094227&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Flattum, Richard Y. AU - Cooney, Adam T. T1 - Non-destructive evaluation of degradation in EB-PVD thermal barrier coatings by infrared reflectance spectroscopy. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2013/01/24/ VL - 1511 IS - 1 M3 - Article SP - 1125 EP - 1132 PB - American Institute of Physics SN - 0094243X AB - At room temperature and atmospheric conditions infrared reflectance spectroscopy and X-ray diffraction were employed for the detection of the phase transformation and residual stress within thermal barrier coatings (TBC). The TBC's samples initially consisted of the porous ceramic topcoat deposited by electron beam plasma vapor deposition, a bond coat and a superalloy substrate. Reflectance spectroscopy scans were performed from 7497 cm-1 to 68 cm-1 to analysis the fingerprint region as well as the chemical bonding region. These regions should indicate if a detectable change within the TBC response is a result of thermal degradation of the microstructure and the changes in yttrium dispersion throughout the yttrium stabilized zirconium. The thermal degradation was induced by thermal cycling the samples to 1100° C and then cooling them in an atmospheric environment. X-ray diffraction was also used to detect the phase composition within the TBC samples and see if either would clearly identify failure prior to actual spallation. The eventual measurability and quantify-ability of the phase changes within the TBC's may be used as an effective non-destructive evaluation (NDE) technique that would allow personnel in the field to know when servicing of the turbine blade was necessary. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - PHYSICAL vapor deposition KW - ELECTRON beams KW - THERMAL barrier coatings KW - NEAR infrared reflectance spectroscopy KW - TEMPERATURE effect KW - X-ray diffraction N1 - Accession Number: 85094237; Flattum, Richard Y. 1 Cooney, Adam T. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, NonDestructive Evaluation Branch, Wright-Patterson AFB, OH,; Source Info: Jan2013, Vol. 1511 Issue 1, p1125; Subject Term: NONDESTRUCTIVE testing; Subject Term: PHYSICAL vapor deposition; Subject Term: ELECTRON beams; Subject Term: THERMAL barrier coatings; Subject Term: NEAR infrared reflectance spectroscopy; Subject Term: TEMPERATURE effect; Subject Term: X-ray diffraction; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Illustrations: 1 Black and White Photograph, 2 Charts, 7 Graphs; Document Type: Article L3 - 10.1063/1.4789169 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85094237&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ko, R. T. AU - Chen, M. Y. AU - Hoppe, W. C. AU - Blackshire, J. L. T1 - Ultrasonic measurements of velocity for modulus assessment of a material using a delay line approach. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2013/01/24/ VL - 1511 IS - 1 M3 - Article SP - 1446 EP - 1453 PB - American Institute of Physics SN - 0094243X AB - In an effort to evaluate the modulus of materials at elevated temperatures, an ultrasonic delay line approach was developed. The setup was tested with a known material, an aluminum alloy, using delay lines at ambient temperature to examine the feasibility of this approach. Due to the low frequency used, interference occurred between multiple passes of the ultrasound through the material resulting a lower than expected measured velocity. Incorporation of a transmission coefficient in the model of the experiment corrected the expected timing of the ultrasonic signals, reconciling the model to measurements of velocity. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRASONIC measurement KW - DELAY lines KW - ALUMINUM alloys KW - ATMOSPHERIC temperature KW - INTERFERENCE (Sound) KW - SIGNAL processing KW - FEASIBILITY studies N1 - Accession Number: 85094111; Ko, R. T. 1 Chen, M. Y. 2 Hoppe, W. C. 1 Blackshire, J. L. 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469, 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: Jan2013, Vol. 1511 Issue 1, p1446; Subject Term: ULTRASONIC measurement; Subject Term: DELAY lines; Subject Term: ALUMINUM alloys; Subject Term: ATMOSPHERIC temperature; Subject Term: INTERFERENCE (Sound); Subject Term: SIGNAL processing; Subject Term: FEASIBILITY studies; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; Number of Pages: 8p; Illustrations: 2 Charts, 6 Graphs; Document Type: Article L3 - 10.1063/1.4789212 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85094111&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Motes, Doyle AU - Aldrin, John C. AU - Keiser, Mark AU - Steffes, Gary AU - Forsyth, David S. T1 - GMR sensing array technique validation study for the inspection of multi-layer metallic structures. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2013/01/24/ VL - 1511 IS - 1 M3 - Article SP - 1562 EP - 1569 PB - American Institute of Physics SN - 0094243X AB - Giant Magnetoresistive (GMR) sensing arrays have been developed to detect fatigue cracks in thick, multi-layered metallic structures. As part of a program conducted by the U.S. Air Force Research Laboratory, fatigue crack specimens were fabricated to provide inspection targets for a GMR array. These specimens were mounted to simulate a wing structure and inspected using a Boeing Mobile Automated Scanner (MAUS). Probability of Detection (POD) from inspections and the results of capability studies are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETORESISTANCE KW - ENGINEERING inspection KW - FATIGUE crack growth KW - STRUCTURAL engineering KW - METALS -- Testing KW - DETECTORS KW - MICROFABRICATION N1 - Accession Number: 85094211; Motes, Doyle 1 Aldrin, John C. 2 Keiser, Mark 1 Steffes, Gary 3 Forsyth, David S. 1; Affiliation: 1: TRI/Austin, Austin, TX 78731, 2: Computational Tools, Gurnee, IL 60031, 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433,; Source Info: Jan2013, Vol. 1511 Issue 1, p1562; Subject Term: MAGNETORESISTANCE; Subject Term: ENGINEERING inspection; Subject Term: FATIGUE crack growth; Subject Term: STRUCTURAL engineering; Subject Term: METALS -- Testing; Subject Term: DETECTORS; Subject Term: MICROFABRICATION; Number of Pages: 8p; Illustrations: 1 Color Photograph, 4 Diagrams, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.4789228 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85094211&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Knopp, Jeremy S. AU - Sabbagh, Harold A. T1 - Bayesian methods in probability of detection estimation and model-assisted probability of detection evaluation. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2013/01/24/ VL - 1511 IS - 1 M3 - Article SP - 1733 EP - 1740 PB - American Institute of Physics SN - 0094243X AB - In this paper, the application of Bayesian methods for probability of detection (POD) estimation and the model-assisted probability of detection methodology is explored. A demonstration of Bayesian estimation for an eddy current POD evaluation case study is presented and compared with conventional approaches. Hierarchical Bayes models are introduced for estimating parameters including random variables in physics-based models. Results are presented that demonstrate the feasibility of simultaneously estimating model calibration parameters, model random variables and measurement error. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BAYESIAN analysis KW - EDDY currents (Electric) KW - PROBABILITY theory KW - COMPARATIVE studies KW - RANDOM variables KW - PARAMETER estimation N1 - Accession Number: 85094249; Aldrin, John C. 1 Knopp, Jeremy S. 2 Sabbagh, Harold A. 3; Affiliation: 1: Computational Tools, Gurnee, IL 60031, 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, 3: Victor Technologies LLC, Bloomington, IN 47401,; Source Info: Jan2013, Vol. 1511 Issue 1, p1733; Subject Term: BAYESIAN analysis; Subject Term: EDDY currents (Electric); Subject Term: PROBABILITY theory; Subject Term: COMPARATIVE studies; Subject Term: RANDOM variables; Subject Term: PARAMETER estimation; Number of Pages: 8p; Illustrations: 1 Diagram, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.4789250 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85094249&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sabbagh, Elias H. AU - Murphy, R. Kim AU - Sabbagh, Harold A. AU - Aldrin, John C. AU - Knopp, Jeremy AU - Blodgett, Mark P. T1 - Stochastic-integral models for propagation-of-uncertainty problems in nondestructive evaluation. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2013/01/24/ VL - 1511 IS - 1 M3 - Article SP - 1765 EP - 1772 PB - American Institute of Physics SN - 0094243X AB - Generalized polynomical chaos (gPC), the probabilistic collocation method (PCM), and analysis of variance (ANOVA) are finding considerable application to problems of interest to engineers in which random parameters are an essential feature of the mathematical model. So far the applications have been mainly to stochastic partial differential equations, but we extend the method to volume-integral equations, which have met great success in electromagnetic nondestructive evaluation (NDE), especially with eddy-currents. The problems of main interest to the NDE community in this connection are concerned with the issue of 'propagation of uncertainty' when the relevant parameters are not well characterized, or are known simply as random variables. We demonstrate the ideas by considering a metallic surface that has undergone a shot-peening treatment to reduce residual stresses, and has, therefore, become a random conductivity field. In particular, we show how ANOVA becomes a very promising method for high-dimensional model representation (HDMR) when there are a large number of random variables present in the problem. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STOCHASTIC processes KW - NONDESTRUCTIVE testing KW - UNCERTAINTY (Information theory) KW - CHAOS theory KW - PARTIAL differential equations KW - INTEGRAL equations KW - MATHEMATICAL models N1 - Accession Number: 85094161; Sabbagh, Elias H. 1 Murphy, R. Kim 1 Sabbagh, Harold A. 1 Aldrin, John C. 2 Knopp, Jeremy 3 Blodgett, Mark P. 3; Affiliation: 1: Victor Technologies, LLC, PO Box 7706, Bloomington, IN 47407-7706, 2: Computational Tools, Gurnee, IL 60031, 3: Air Force Research Laboratory (AFRL/RXLP). Wright-Patterson AFB OH 45433-7817,; Source Info: Jan2013, Vol. 1511 Issue 1, p1765; Subject Term: STOCHASTIC processes; Subject Term: NONDESTRUCTIVE testing; Subject Term: UNCERTAINTY (Information theory); Subject Term: CHAOS theory; Subject Term: PARTIAL differential equations; Subject Term: INTEGRAL equations; Subject Term: MATHEMATICAL models; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Illustrations: 7 Graphs; Document Type: Article L3 - 10.1063/1.4789254 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85094161&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Knopp, Jeremy S. T1 - False call rate estimation. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2013/01/24/ VL - 1511 IS - 1 M3 - Article SP - 1795 EP - 1802 PB - American Institute of Physics SN - 0094243X AB - In this paper, several approaches are presented for the estimation of false call rate including confidence bounds during an NDE reliability study. Bootstrapping methods are applied to nonparametric models (for hit-miss data) and several noise distribution models. By applying bootstrapping with a student t-distribution used to address the 'heavy tail' behavior of the data, the estimated false call rate with confidence bounds was found to be in good agreement with the observed data. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - RELIABILITY (Engineering) KW - BOOTSTRAPPING (Statistics) KW - ESTIMATION theory KW - DISTRIBUTION (Probability theory) KW - DATA analysis N1 - Accession Number: 85094219; Aldrin, John C. 1 Knopp, Jeremy S. 2; Affiliation: 1: Computational Tools, Gurnee, IL 60031, 2: Air Force Research Laboratory (AFRL/RXLP), Wright-Patterson AFB, OH 45433,; Source Info: Jan2013, Vol. 1511 Issue 1, p1795; Subject Term: NONDESTRUCTIVE testing; Subject Term: RELIABILITY (Engineering); Subject Term: BOOTSTRAPPING (Statistics); Subject Term: ESTIMATION theory; Subject Term: DISTRIBUTION (Probability theory); Subject Term: DATA analysis; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Illustrations: 1 Diagram, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.4789258 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85094219&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lindgren, E. A. AU - Stargel, D. T1 - USAF perspective on foundational challenges for enhanced damage sensing. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2013/01/24/ VL - 1511 IS - 1 M3 - Article SP - 1839 EP - 1845 PB - American Institute of Physics SN - 0094243X AB - Structural integrity programs of the United States Air Force (USAF) include periodic inspection to detect damage before it grows to a critical size that can impact the safety of USAF systems. Current inspection methods have been used successfully to ensure the required risk metrics for these systems are being met as mandated by the relevant USAF Standards. However, there is a continual desire to improve the capability of inspection methods while increasing the efficiency and reliability of these methods. As new approaches are being explored for the enhancement of damage sensing, a number of foundational issues that represent hurdles for the application of these enhancements have been identified. This paper provides background of how damage sensing is used by the USAF and expands on identified foundational challenges that represent technical barriers to the implementation of new damage sensing methods. As the desired capability of the damage sensing methods expand from detection of damage to the characterization of damage, the degree of complexity grows and additional challenges emerge. Representative case studies are used to illustrate challenges for detection, localization and characterization of damage. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RELIABILITY (Engineering) KW - DETECTORS KW - FRACTURE mechanics KW - NONDESTRUCTIVE testing KW - CASE studies KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 85094105; Lindgren, E. A. 1 Stargel, D. 2; Affiliation: 1: US Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright- Patterson Air Force Base, OH 45433, 2: US Air Force Research Laboratory, Air Force Office of Scientific Research, Arlington, VA 22203,; Source Info: Jan2013, Vol. 1511 Issue 1, p1839; Subject Term: RELIABILITY (Engineering); Subject Term: DETECTORS; Subject Term: FRACTURE mechanics; Subject Term: NONDESTRUCTIVE testing; Subject Term: CASE studies; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 928110 National Security; Number of Pages: 7p; Illustrations: 1 Color Photograph, 1 Diagram; Document Type: Article L3 - 10.1063/1.4789264 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85094105&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roslyak, O. AU - Gumbs, Godfrey AU - Danhong Huang T1 - Plasmons in single- and double-component helical liquids: Application to two-dimensional topological insulators. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2013/01/22/ VL - 87 IS - 4 M3 - Article SP - 045121-1 EP - 045121-7 SN - 10980121 AB - The plasmon excitations in proposed single- and double-component helical liquid (HL) models are investigated. within the random-phase approximation by calculating the density-density, spin-density, and spin-spin waves. The effect due to broken time-reversal symmetry on intraband-plasmon dispersion relation in the single-component HL system is analyzed and compared to those of well-known cases, such as conventional quasi-one-dimensional electron gases and armchair graphene nanoribbons. In the long-wavelength limit, the dispersion of the collective excitations provided by the density-density response of the single-component HL matches that of spin-density response of the two-component HL. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMONS (Physics) KW - SPIN-spin interactions KW - APPROXIMATION theory KW - DISPERSION KW - ELECTRON gas KW - GRAPHENE N1 - Accession Number: 85939650; Roslyak, O. 1,2; Email Address: avroslyak@gmail.com Gumbs, Godfrey 2 Danhong Huang 3; Affiliation: 1: Los Alamos National Lab, 4200 W Jemez Rd #300, Los Alamos, New Mexico 87544 2: Department of Physics and Astronomy, Hunter College, City University of New York, 695 Park Avenue, New York, New York 10065, USA 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA; Source Info: Jan2013, Vol. 87 Issue 4, p045121-1; Subject Term: PLASMONS (Physics); Subject Term: SPIN-spin interactions; Subject Term: APPROXIMATION theory; Subject Term: DISPERSION; Subject Term: ELECTRON gas; Subject Term: GRAPHENE; Number of Pages: 7p; Document Type: Article L3 - 10.1103/PhysRevB.87.045121 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85939650&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shellhamer, Dale F. AU - Bunting, Summer A. AU - Hickle, Kelli R. AU - Horn, Parker C. AU - Milligan, Jacob C. AU - Shipowick, Danielle E. AU - Smith, Lincoln B. AU - Vandenbroek, David J. AU - Perry, Marc C. AU - Boatz, Jerry A. T1 - Kinetic Studies on the Reaction of Chlorosulfonyl Isocyanate with Monofluoroalkenes: Experimental Evidence for Both Stepwise and Concerted Mechanisms and a Pre-equilibrium Complex on the Reaction Pathway. JO - Journal of Organic Chemistry JF - Journal of Organic Chemistry Y1 - 2013/01/18/ VL - 78 IS - 2 M3 - Article SP - 246 EP - 252 SN - 00223263 AB - Chlorosulfonyl isocyanate (CSI) is reported to react with hydrocarbon alkenes by a stepwise dipolar pathway to give N-chlorosulfonyl-β-lactams that are readily reduced to β-lactams. Substitution of a vinyl hydrogen for a vinyl fluorine changes the dynamics for reaction with CSI so that a concerted pathway is favored. Rate constants were measured for reactions of CSI with monofluoroalkenes and some hydrocarbon alkenes. Activation parameters for two hydrocarbon alkenes and two monofluoroalkenes support this change in mechanism. A plot generated from the natural log of rate constants vs ionization potentials (IP) indicates that fluoroalkenes with IP values >8.9 eV react by a concerted process. Electron-rich monofluoroalkenes with IP values <8.5 eV were found to react by a single-electron transfer (SET) pathway. Hydrocarbon alkenes were also found to react by this dipolar stepwise SET intermediate rather than the previously accepted stepwise dipolar pathway. Data support a pre-equilibrium complex on the reaction pathway just before the rate-determining step of the concerted pathway and a SET intermediate for the stepwise reactions. When the reactions are carried out at lower temperatures, the equilibrium shifts toward the complex or SET intermediate enhancing the synthetic utility of these reactions. Kinetic data also support formation of a planar transition state rather than the orthogonal geometry as reported for ketene [2 + 2] cycloadditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Organic Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHLOROSULFONYL isocyanate KW - HYDROCARBONS KW - ORGANIC synthesis (Chemistry) KW - KETENES KW - RING formation (Chemistry) N1 - Accession Number: 85403424; Shellhamer, Dale F. 1; Email Address: dshellha@pointloma.edu Bunting, Summer A. 1 Hickle, Kelli R. 1 Horn, Parker C. 1 Milligan, Jacob C. 1 Shipowick, Danielle E. 1 Smith, Lincoln B. 1 Vandenbroek, David J. 1 Perry, Marc C. 1 Boatz, Jerry A. 2; Affiliation: 1: Department of Chemistry, Point Loma Nazarene University, San Diego, California 92106-2899, United States 2: Air Force Research Laboratory, Edwards Air Force Base, California 93524-7680, United States; Source Info: 1/18/2013, Vol. 78 Issue 2, p246; Subject Term: CHLOROSULFONYL isocyanate; Subject Term: HYDROCARBONS; Subject Term: ORGANIC synthesis (Chemistry); Subject Term: KETENES; Subject Term: RING formation (Chemistry); NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1021/jo3016488 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85403424&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuaijun Pan AU - Kota, Arun K. AU - Mabry, Joseph M. AU - Tuteja, Anish T1 - Superomniphobic Surfaces for Effective Chemical Shielding. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2013/01/16/ VL - 135 IS - 2 M3 - Article SP - 578 EP - 581 SN - 00027863 AB - Superomniphobic surfaces display contact angles >150° and low contact angle hysteresis with essentially all contacting liquids. In this work, we report surfaces that display superomniphobicity with a range of different non-Newtonian liquids, in addition to superomniphobicity with a wide range of Newtonian liquids. Our surfaces possess hierarchical scales of re-entrant texture that significantly reduce the solid-liquid contact area. Virtually all liquids including concentrated organic and inorganic acids, bases, and solvents, as well as viscoelastic polymer solutions, can easily roll off and bounce on our surfaces. Consequently, they serve as effective chemical shields against virtually all liquids-organic or inorganic, polar or nonpolar, Newtonian or non-Newtonian. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONTACT angle KW - HYSTERESIS KW - NON-Newtonian fluids KW - NEWTONIAN fluids KW - SOLID-liquid interfaces KW - ACIDS KW - VISCOELASTIC materials N1 - Accession Number: 85422729; Shuaijun Pan 1,2 Kota, Arun K. 1,2 Mabry, Joseph M. 3 Tuteja, Anish 1,2; Email Address: atuteja@umich.edu; Affiliation: 1: Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States 2: Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States 3: Rocket Propulsion Division, Air Force Research Laboratory, Edwards Air Force Base, California 93524, United States; Source Info: 1/16/2013, Vol. 135 Issue 2, p578; Subject Term: CONTACT angle; Subject Term: HYSTERESIS; Subject Term: NON-Newtonian fluids; Subject Term: NEWTONIAN fluids; Subject Term: SOLID-liquid interfaces; Subject Term: ACIDS; Subject Term: VISCOELASTIC materials; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 4p; Document Type: Article L3 - 10.1021/ja310517s UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85422729&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Strack, Guinevere AU - Luckarift, Heather R. AU - Sizemore, Susan R. AU - Nichols, Robert K. AU - Farrington, Karen E. AU - Wu, Peter K. AU - Atanassov, Plamen AU - Biffinger, Justin C. AU - Johnson, Glenn R. T1 - Power generation from a hybrid biological fuel cell in seawater JO - Bioresource Technology JF - Bioresource Technology Y1 - 2013/01/15/ VL - 128 M3 - Article SP - 222 EP - 228 SN - 09608524 AB - Abstract: A hybrid biological fuel cell (HBFC) comprised of a microbial anode for lactate oxidation and an enzymatic cathode for oxygen reduction was constructed and then tested in a marine environment. Shewanella oneidensis DSP-10 was cultivated in laboratory medium and then fixed on a carbon felt electrode via a silica sol–gel process in order to catalyze anodic fuel cell processes. The cathode electrocatalyst was composed of bilirubin oxidase, fixed to a carbon nanotube electrode using a heterobifunctional cross linker, and then stabilized with a silica sol–gel coating. The anode and cathode half-cells provided operating potentials of −0.44 and 0.48V, respectively (vs. Ag/AgCl). The HBFC maintained a reproducible open circuit voltage >0.7V for 9d in laboratory settings and sustained electrocatalytic activity for >24h in open environment tests. [Copyright &y& Elsevier] AB - Copyright of Bioresource Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYBRID systems KW - MICROBIAL fuel cells KW - SEAWATER KW - FUEL cells -- Electrodes KW - OXIDATION-reduction reaction KW - SOL-gel processes KW - BILIRUBIN oxidase KW - Bilirubin oxidase KW - Enzymatic fuel cell KW - Microbial fuel cell KW - Multicopper oxidase KW - Shewanella oneidensis N1 - Accession Number: 85284478; Strack, Guinevere 1,2 Luckarift, Heather R. 1,3 Sizemore, Susan R. 1,3 Nichols, Robert K. 1,3 Farrington, Karen E. 1,3 Wu, Peter K. 4 Atanassov, Plamen 5 Biffinger, Justin C. 6 Johnson, Glenn R. 1; Email Address: glenn.johnson.8@us.af.mil; Affiliation: 1: Microbiology and Applied Biochemistry Laboratory, Airbase Technologies Division, US Air Force Research Laboratory, Tyndall Air Force Base, FL 32403, United States 2: Oak Ridge Institute of Science and Engineering, Oak Ridge, TN 37831, United States 3: Universal Technology Corporation, 1270 N. Fairfield Road Dayton, OH 45432, United States 4: Department of Physics and Engineering, Southern Oregon University, Ashland, OR 97520, United States 5: Center for Emerging Energy Technologies, University of New Mexico, Albuquerque, NM 87131, United States 6: US Naval Research Laboratory, Washington, DC 20375, United States; Source Info: Jan2013, Vol. 128, p222; Subject Term: HYBRID systems; Subject Term: MICROBIAL fuel cells; Subject Term: SEAWATER; Subject Term: FUEL cells -- Electrodes; Subject Term: OXIDATION-reduction reaction; Subject Term: SOL-gel processes; Subject Term: BILIRUBIN oxidase; Author-Supplied Keyword: Bilirubin oxidase; Author-Supplied Keyword: Enzymatic fuel cell; Author-Supplied Keyword: Microbial fuel cell; Author-Supplied Keyword: Multicopper oxidase; Author-Supplied Keyword: Shewanella oneidensis; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.biortech.2012.10.104 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85284478&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sandhu, Sarwan S. AU - Fellner, Joseph P. T1 - Model formulation and simulation of a solid-state lithium-based cell JO - Electrochimica Acta JF - Electrochimica Acta Y1 - 2013/01/15/ VL - 88 M3 - Article SP - 495 EP - 506 SN - 00134686 AB - Abstract: The analytical formulation presented here is for the prediction of the performance of a solid-state lithium anode/lithium-insertion cathode cell that is limited by solid-state diffusion in the cathode active material. Transient, dimensionless solid-state lithium-ion concentration-incorporating group profiles have been computed for a cell whose performance is controlled by lithium-ion diffusion in the cathode active material. The analytical equation for the voltage loss associated with solid-state lithium-ion diffusion and the resultant solid-state lithium-ion concentration profile in the cathode active material has been developed. To provide examples of the application of the developed formulation, generated numerical data are shown in the form of plots. Preliminary determination of the lithium ion diffusion coefficient in a dilithium phthalocyanine cathode active material from cell discharge data, and the determination of the activity coefficient and reversible cell voltage of an aerogel-based LiV2O5 cathode active material as a function of lithium intercalation have been performed. [Copyright &y& Elsevier] AB - Copyright of Electrochimica Acta is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLID state chemistry KW - LITHIUM cells KW - AEROGELS KW - CLATHRATE compounds KW - PHTHALOCYANINES KW - DIFFUSION KW - ELECTRODES KW - Diffusion KW - Lithium KW - Modeling KW - Solid-state KW - Thermodynamics KW - Transient N1 - Accession Number: 85021450; Sandhu, Sarwan S. 1; Email Address: ssandhu1@udayton.edu Fellner, Joseph P. 2; Affiliation: 1: Department of Chemical & Materials Engineering, University of Dayton, Dayton, OH 45469, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7251, USA; Source Info: Jan2013, Vol. 88, p495; Subject Term: SOLID state chemistry; Subject Term: LITHIUM cells; Subject Term: AEROGELS; Subject Term: CLATHRATE compounds; Subject Term: PHTHALOCYANINES; Subject Term: DIFFUSION; Subject Term: ELECTRODES; Author-Supplied Keyword: Diffusion; Author-Supplied Keyword: Lithium; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Solid-state; Author-Supplied Keyword: Thermodynamics; Author-Supplied Keyword: Transient; NAICS/Industry Codes: 325130 Synthetic Dye and Pigment Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.electacta.2012.10.110 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85021450&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rojhirunsakool, T. AU - Meher, S. AU - Hwang, J. AU - Nag, S. AU - Tiley, J. AU - Banerjee, R. T1 - Influence of composition on monomodal versus multimodal γ′ precipitation in Ni-Al-Cr alloys. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2013/01/15/ VL - 48 IS - 2 M3 - Article SP - 825 EP - 831 PB - Springer Science & Business Media B.V. SN - 00222461 AB - This study investigates the influence of alloy composition on γ′ precipitation in Ni-8Al-8Cr and Ni-10Al-10Cr at.% during continuous cooling from a supersolvus temperature. When subjected to the same cooling rate, Ni-8Al-8Cr develops a monomodal population, whereas Ni-10Al-10Cr develops a multimodal (primarily bimodal) population of γ′ precipitates. The bimodal γ′ precipitate size distribution in Ni-10Al-10Cr alloy can be attributed to two successive nucleation bursts during continuous cooling while the monomodal γ′ size distribution in Ni-8Al-8Cr results from a single nucleation burst followed by a longer time-wider temperature window for nucleation resulting in a larger number density of precipitates. Three-dimensional atom probe investigations reveal that while local equilibrium is achieved across the γ/γ′ interface, far-field γ compositions still retain an excess of Al and a depletion of Cr with respect to equilibrium, thus giving direct experimental evidence of the driving force for subsequent nucleation bursts during continuous cooling in case of Ni-10Al-10Cr. Contrastingly, in case of the Ni-8Al-8Cr alloy, while the γ phase retains an excess of Al and a depletion of Cr with respect to equilibrium after continuous cooling to room temperature, the additional driving force is consumed during subsequent isothermal annealing by growth of the large number of γ′ precipitates without any new nucleation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRECIPITATION (Chemistry) KW - RESEARCH KW - ALLOYS -- Analysis KW - TERNARY alloys KW - NICKEL-chromium-aluminum alloys KW - EFFECT of temperature on alloys KW - COOLING N1 - Accession Number: 84487404; Rojhirunsakool, T. 1 Meher, S. 1 Hwang, J. 2 Nag, S. 1 Tiley, J. 3 Banerjee, R. 1; Email Address: rajarshi.banerjee@unt.edu; Affiliation: 1: Center for Advanced Research and Technology and Department of Materials Science and Engineering, University of North Texas, Denton USA 2: Institute of Advanced Composite Materials, Korea Institute of Science and Technology, Daejeon South Korea 3: Air Force Research Laboratory, Dayton USA; Source Info: Jan2013, Vol. 48 Issue 2, p825; Subject Term: PRECIPITATION (Chemistry); Subject Term: RESEARCH; Subject Term: ALLOYS -- Analysis; Subject Term: TERNARY alloys; Subject Term: NICKEL-chromium-aluminum alloys; Subject Term: EFFECT of temperature on alloys; Subject Term: COOLING; Number of Pages: 7p; Illustrations: 2 Black and White Photographs, 1 Diagram, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1007/s10853-012-6802-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84487404&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kahn, Leonard T1 - Rule consequentialism and disasters. JO - Philosophical Studies JF - Philosophical Studies Y1 - 2013/01/15/ VL - 162 IS - 2 M3 - Article SP - 219 EP - 236 PB - Springer Science & Business Media B.V. SN - 00318116 AB - Rule consequentialism (RC) is the view that it is right for A to do F in C if and only if A's doing F in C is in accordance with the set of rules which, if accepted by all, would have consequences which are better than any alternative set of rules (i.e., the ideal code). I defend RC from two related objections. The first objection claims that RC requires obedience to the ideal code even if doing so has disastrous results. Though some rule consequentialists embrace a disaster-clause which permits agents to disregard some of the rules in the ideal code as a necessary means of avoiding disasters, they have not adequately explained how this clause works. I offer such an explanation and show how it fits naturally with the rest of RC. The second disaster objection asserts that even if RC can legitimately invoke a disaster-clause, it lacks principled grounds from distinguishing disasters from non-disasters. In response, I explore Hooker's suggestion that 'disaster' is vague. I contend that every plausible ethical theory must invoke something similar to a disaster clause. So if 'disaster' is vague, then every plausible ethical theory faces a difficulty with it. As a result, this vagueness is not a reason to prefer other theories to RC. However, I argue, contra Hooker, that the sense of 'disaster' relevant to RC is not vague, and RC does indeed have principled grounds to distinguish disasters from non-disasters. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Studies is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONSEQUENTIALISM (Ethics) KW - DISASTERS KW - VAGUENESS (Philosophy) KW - PLAUSIBILITY (Logic) KW - Act consequentialism KW - Agent-centered constraints KW - Disasters KW - Ideal code KW - Rule consequentialism KW - Vagueness KW - HOOKER, Brad N1 - Accession Number: 84579259; Kahn, Leonard 1; Email Address: leonardkahn@gmail.com; Affiliation: 1: Department of Philosophy, United States Air Force Academy, 2354 Fairchild Drive USAF Academy 80840-6256 USA; Source Info: Jan2013, Vol. 162 Issue 2, p219; Subject Term: CONSEQUENTIALISM (Ethics); Subject Term: DISASTERS; Subject Term: VAGUENESS (Philosophy); Subject Term: PLAUSIBILITY (Logic); Author-Supplied Keyword: Act consequentialism; Author-Supplied Keyword: Agent-centered constraints; Author-Supplied Keyword: Disasters; Author-Supplied Keyword: Ideal code; Author-Supplied Keyword: Rule consequentialism; Author-Supplied Keyword: Vagueness; People: HOOKER, Brad; Number of Pages: 18p; Document Type: Article L3 - 10.1007/s11098-011-9756-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84579259&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Paul, R. AU - Voevodin, A.A. AU - Hu, J.J. AU - Amama, P.B. AU - Ganguli, S. AU - Roy, A.K. AU - Zemlyanov, D. AU - Fisher, T.S. T1 - Boron–carbon–nitrogen foam surfaces for thermal physisorption applications JO - Thin Solid Films JF - Thin Solid Films Y1 - 2013/01/15/ VL - 528 M3 - Article SP - 187 EP - 193 SN - 00406090 AB - Abstract: A surface chemical treatment of highly porous carbon foams was adopted to synthesize boron–carbon–nitrogen (B–C–N) foams for thermal energy storage and release using an adsorption/desorption cycle with lightweight hydrocarbons. Microwave treatment in boric acid and urea was used to modify carbon foams with a B–C–N surface. Depending on the initial carbon foam state, B–C–N surface layers were produced with both amorphous and crystalline structures. The resultant B–C–N foams were characterized by TEM, XPS, XRD, FESEM and Raman measurements to quantify their stoichiometry, structure, and morphology. Adsorption enthalpy with methanol and thermal stability of foams was analyzed with DSC and TGA respectively. Thermal conductivity was measured by a transient laser flash technique. Results indicate that the crystalline graphitic carbon foam produces superior B–C–N surfaces compared to amorphous carbon foam. The crystalline B–C–N foams are found to provide the highest adsorption capacity, better thermal and oxidation stability. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BORON compounds -- Synthesis KW - SURFACE chemistry KW - POROUS materials KW - FOAMED materials KW - HEAT storage KW - HYDROCARBONS KW - ADSORPTION KW - Boron nitrogen doping KW - Desorption KW - Enthalpy KW - Porous carbon KW - Thermal conductivity N1 - Accession Number: 85173669; Paul, R. 1; Email Address: paul24@purdue.edu Voevodin, A.A. 1,2 Hu, J.J. 2 Amama, P.B. 2,3 Ganguli, S. 2 Roy, A.K. 2 Zemlyanov, D. 1 Fisher, T.S. 1,2; Email Address: tsfisher@purdue.edu; Affiliation: 1: Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, OH 45433, United States 3: University of Dayton Research Institute, University of Dayton, Dayton, OH 45469, United States; Source Info: Jan2013, Vol. 528, p187; Subject Term: BORON compounds -- Synthesis; Subject Term: SURFACE chemistry; Subject Term: POROUS materials; Subject Term: FOAMED materials; Subject Term: HEAT storage; Subject Term: HYDROCARBONS; Subject Term: ADSORPTION; Author-Supplied Keyword: Boron nitrogen doping; Author-Supplied Keyword: Desorption; Author-Supplied Keyword: Enthalpy; Author-Supplied Keyword: Porous carbon; Author-Supplied Keyword: Thermal conductivity; NAICS/Industry Codes: 326150 Urethane and Other Foam Product (except Polystyrene) Manufacturing; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.tsf.2012.08.059 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85173669&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kumar, A. AU - Voevodin, A.A. AU - Paul, R. AU - Altfeder, I. AU - Zemlyanov, D. AU - Zakharov, D.N. AU - Fisher, T.S. T1 - Nitrogen-doped graphene by microwave plasma chemical vapor deposition JO - Thin Solid Films JF - Thin Solid Films Y1 - 2013/01/15/ VL - 528 M3 - Article SP - 269 EP - 273 SN - 00406090 AB - Abstract: Rapid synthesis of nitrogen-doped, few-layer graphene films on Cu foil is achieved by microwave plasma chemical vapor deposition. The films are doped during synthesis by introduction of nitrogen gas in the reactor. Raman spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy and scanning tunneling microscopy reveal crystal structure and chemical characteristics. Nitrogen concentrations up to 2at.% are observed, and the limit is linked to the rigidity of graphene films on copper surfaces that impedes further nitrogen substitutions of carbon atoms. The entire growth process requires only a few minutes without supplemental substrate heating and offers a promising path toward large-scale synthesis of nitrogen-doped graphene films. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NITROGEN KW - DOPED semiconductors KW - GRAPHENE KW - MICROWAVE plasmas KW - CHEMICAL vapor deposition KW - SYNTHESIS (Chemistry) KW - THIN films KW - X-ray photoelectron spectroscopy KW - Graphene KW - Nitrogen doping KW - Rapid synthesis N1 - Accession Number: 85173682; Kumar, A. 1; Email Address: kumar50@purdue.edu Voevodin, A.A. 1,2 Paul, R. 1 Altfeder, I. 2 Zemlyanov, D. 1 Zakharov, D.N. 1 Fisher, T.S. 1,2; Email Address: tsfisher@purdue.edu; Affiliation: 1: Birck Nanotechnolgy Center, Purdue University, West Lafayette, IN 47907, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, OH 45433, United States; Source Info: Jan2013, Vol. 528, p269; Subject Term: NITROGEN; Subject Term: DOPED semiconductors; Subject Term: GRAPHENE; Subject Term: MICROWAVE plasmas; Subject Term: CHEMICAL vapor deposition; Subject Term: SYNTHESIS (Chemistry); Subject Term: THIN films; Subject Term: X-ray photoelectron spectroscopy; Author-Supplied Keyword: Graphene; Author-Supplied Keyword: Nitrogen doping; Author-Supplied Keyword: Rapid synthesis; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.tsf.2012.07.142 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85173682&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abboud, Jacques E. AU - Chong, Xinyuan AU - Zhang, Mingjun AU - Zhang, Zhili AU - Jiang, Naibo AU - Roy, Sukesh AU - Gord, James R. T1 - Photothermally activated motion and ignition using aluminum nanoparticles. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/01/14/ VL - 102 IS - 2 M3 - Article SP - 023905 EP - 023905-5 PB - American Institute of Physics SN - 00036951 AB - The aluminum nanoparticles (Al NPs) are demonstrated to serve as active photothermal media, to enhance and control local photothermal energy deposition via the photothermal effect activated by localized surface plasmon resonance (LSPR) and amplified by Al NPs oxidation. The activation source is a 2-AA-battery-powered xenon flash lamp. The extent of the photothermally activated movement of Al NPs can be ∼6 mm. Ignition delay can be ∼0.1 ms. Both scanning electron microscopy and energy-dispersive X-ray spectroscopy measurements of motion-only and after-ignition products confirm significant Al oxidation occurs through sintering and bursting after the flash exposure. Simulations suggest local heat generation is enhanced by LSPR. The positive-feedback effects from the local heat generation amplified by Al oxidation produce a large increase in local temperature and pressure, which enhances movement and accelerates ignition. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - PHOTOTHERMAL effect KW - SURFACE plasmon resonance KW - OXIDATION KW - XENON N1 - Accession Number: 84985500; Abboud, Jacques E. 1 Chong, Xinyuan 1 Zhang, Mingjun 1 Zhang, Zhili 1 Jiang, Naibo 2 Roy, Sukesh 2 Gord, James R. 3; Affiliation: 1: Mechanical, Aerospace and Biomedical Engineering Department, University of Tennessee, Knoxville, Tennessee 37996, 2: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, Ohio 45431, 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: 1/14/2013, Vol. 102 Issue 2, p023905; Subject Term: NANOPARTICLES; Subject Term: PHOTOTHERMAL effect; Subject Term: SURFACE plasmon resonance; Subject Term: OXIDATION; Subject Term: XENON; Number of Pages: 1p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.4776660 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84985500&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lewis, W. K. AU - Rumchik, C. G. AU - Smith, M. J. T1 - Emission spectroscopy of the interior of optically dense post-detonation fireballs. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/01/14/ VL - 113 IS - 2 M3 - Article SP - 024903 EP - 024903-4 PB - American Institute of Physics SN - 00218979 AB - In recent years, emission spectroscopy has been applied to the study of post-detonation combustion in explosives, often yielding valuable information on temperatures and chemical dynamics. The post-detonation fireballs that form as under-oxidized detonation products burn in the surrounding air are optically dense and the corresponding emission spectra sample only the material at or near the surface of the fireball. In the present study, we exploit the large optical density in order to probe the dynamics occurring in the interior of the fireball. Emission spectra are collected following detonation of 20 g aluminized Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) charges using fiber optics located behind the flame front and then compared with the corresponding spectra of the surface layer collected from outside the fireball. We find that in the early evolution of the fireball (t ≤ 60 μs and r ≤ 10 cm in the current study), combustion and light emission are predominantly confined to the surface, while the interior is dark. Later, after the fireball expands and mixes with the surrounding air (t ≥ 120 μs or r ≥ 30 cm), combustion and emission occur throughout, and we find no significant differences between the spectra collected from the interior of the fireball versus those from its surface. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXPLOSIVES KW - RESEARCH KW - COMBUSTION -- Research KW - EMISSION spectroscopy KW - ATOMIC spectroscopy KW - MOLECULAR spectroscopy N1 - Accession Number: 84761248; Lewis, W. K. 1 Rumchik, C. G. 2 Smith, M. J. 3; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469, 2: U.S. Air Force Research Laboratory, Munitions Directorate, Eglin AFB, Florida 32542, 3: U.S. Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, Ohio 45433,; Source Info: Jan2013, Vol. 113 Issue 2, p024903; Subject Term: EXPLOSIVES; Subject Term: RESEARCH; Subject Term: COMBUSTION -- Research; Subject Term: EMISSION spectroscopy; Subject Term: ATOMIC spectroscopy; Subject Term: MOLECULAR spectroscopy; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 1p; Illustrations: 1 Diagram, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.4774029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84761248&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Sukesh AU - Hsu, Paul S. AU - Jiang, Naibo AU - Gord, Joseph R. AU - Kulatilaka, Waruna D. AU - Stauffer, Hans U. AU - Gord, James R. T1 - Direct measurements of collisionally broadened Raman linewidths of CO2 S-branch transitions. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2013/01/14/ VL - 138 IS - 2 M3 - Article SP - 024201 EP - 024201-6 PB - American Institute of Physics SN - 00219606 AB - We report direct measurements of S-branch Raman-coherence lifetimes of CO2 resulting from CO2-CO2 and CO2-N2 collisions by employing time-resolved picosecond coherent anti-Stokes Raman scattering spectroscopy. The S-branch (ΔJ = +2) transitions of CO2 with rotational quantum number J = 0-52 were simultaneously excited using a broadband (∼5 nm) laser pulse with a full-width-at-half-maximum duration of ∼115 ps. The coherence lifetimes of CO2 for a pressure range of 0.05-1 atm were measured directly by probing the rotational coherence with a nearly transform-limited, 90-ps-long laser pulse. These directly measured Raman-coherence lifetimes, when converted to collisional linewidth broadening coefficients, differ from the previously reported broadening coefficients extracted from frequency-domain rotational Raman and infrared-absorption spectra and from theoretical calculations by 7%-25%. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLISIONS (Physics) KW - CARBON dioxide KW - PHASE transformations (Physics) KW - PHYSICAL measurements KW - RAMAN effect KW - QUANTUM theory KW - PRESSURE N1 - Accession Number: 84761163; Roy, Sukesh 1 Hsu, Paul S. 1 Jiang, Naibo 1 Gord, Joseph R. 2 Kulatilaka, Waruna D. 1 Stauffer, Hans U. 1 Gord, James R. 3; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, Ohio 45431, 2: Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, 3: Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, Ohio 45433,; Source Info: 1/14/2013, Vol. 138 Issue 2, p024201; Subject Term: COLLISIONS (Physics); Subject Term: CARBON dioxide; Subject Term: PHASE transformations (Physics); Subject Term: PHYSICAL measurements; Subject Term: RAMAN effect; Subject Term: QUANTUM theory; Subject Term: PRESSURE; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 1p; Illustrations: 1 Chart, 6 Graphs; Document Type: Article L3 - 10.1063/1.4774093 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84761163&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Behabtu, Natnael AU - Young, Colin C. AU - Tsentalovich, Dmitri E. AU - Kleinerman, Olga AU - Xuan Wang AU - Ma, Anson W. K. AU - Bengio, E. Amram AU - Waarbeek, Ron F. ter AU - de Jong, Jorrit J. AU - Hoogerwerf, Ron E. AU - Fairchild, Steven B. AU - Ferguson, John B. AU - Maruyama, Benji AU - Kono, Junichiro AU - Talmon, Yeshayahu AU - Cohen, Yachin AU - Otto, Marcin J. AU - Pasquali, Matteo T1 - Strong, Light, Multifunctional Fibers of Carbon Nanotubes with Ultrahigh Conductivity. JO - Science JF - Science Y1 - 2013/01/11/ VL - 339 IS - 6116 M3 - Article SP - 182 EP - 186 SN - 00368075 AB - The article focuses on research into high-performance multifunctional carbon nanotube (CNT) fibers. It states the CNT fibers combine the specific electrical conductivity of metals while possessing the stiffness, strength, and thermal conductivity of carbon fibers. It mentions the CNT fibers are produced through high-throughput wet spinning which is the same process used in manufacturing high-performance industrial fibers. It suggests the scalable CNT fibers could be utilized in field emission and aerospace electronics. It comments that the synthesis of all-armchair single-walled carbon nanotubes may be needed to reach ultimate conductivity in the fibers. KW - CARBON nanotubes KW - ELECTRIC conductivity KW - THERMAL conductivity KW - CARBON fibers KW - METALS KW - SPINNING (Textiles) KW - FIELD emission KW - ELECTRONICS KW - SINGLE walled carbon nanotubes N1 - Accession Number: 85002997; Behabtu, Natnael 1 Young, Colin C. 1 Tsentalovich, Dmitri E. 1 Kleinerman, Olga 2 Xuan Wang 1 Ma, Anson W. K. 1 Bengio, E. Amram 1,2 Waarbeek, Ron F. ter 3 de Jong, Jorrit J. 3 Hoogerwerf, Ron E. 3 Fairchild, Steven B. 4 Ferguson, John B. 4 Maruyama, Benji 4 Kono, Junichiro 1 Talmon, Yeshayahu 2 Cohen, Yachin 2 Otto, Marcin J. 3 Pasquali, Matteo 1; Email Address: mp@rice.edu; Affiliation: 1: Smalley Institute for Nanoscale Science and Technology, Rice University, Houston, TX 77005, USA 2: Department of Chemical Engineering, Technion-Israel Institute of Technology and Russell Berrie Nanotechnology Institute (RBNI), Haifa 32000, Israel 3: Teijin Aramid, Arnhem, Netherlands 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: 1/11/2013, Vol. 339 Issue 6116, p182; Subject Term: CARBON nanotubes; Subject Term: ELECTRIC conductivity; Subject Term: THERMAL conductivity; Subject Term: CARBON fibers; Subject Term: METALS; Subject Term: SPINNING (Textiles); Subject Term: FIELD emission; Subject Term: ELECTRONICS; Subject Term: SINGLE walled carbon nanotubes; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 313110 Fiber, Yarn, and Thread Mills; Number of Pages: 5p; Document Type: Article L3 - 10.1126/science.2228061 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85002997&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Altfeder, Igor AU - Wei Yi AU - Narayanamurti, V. T1 - Spin-polarized scanning tunneling microscopy of the room-temperature antiferromagnet c-FeSi. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2013/01/08/ VL - 87 IS - 2 M3 - Article SP - 020403-1 EP - 020403-4 SN - 10980121 AB - Antiferromagnetic spin ordering has been revealed by room-temperature spin-polarized scanning tunneling microscopy (SP-STM) in thin epitaxial films of c-FeSi on Si(111). Spin polarization of tunneling current for unoccupied states is found to be unusually large I↑↑/I↓↑ = 3.8. Atomically sharp spin-frustration domain walls, developing on the surfaces of nanoscale islands, have been observed on SP-STM images. Our results suggest that antiferromagnetism in c-FeSi is driven by Mott-Hubbard transition, and the atomically narrow domain walls are caused by local insulator-to-metal breakdown. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCANNING tunneling microscopy KW - ANTIFERROMAGNETISM KW - DOMAIN walls (Ferromagnetism) KW - EPITAXY KW - CONDENSED matter N1 - Accession Number: 85939416; Altfeder, Igor 1; Email Address: igor.altfeder.ctr@wpafb.af.mil Wei Yi 2,3 Narayanamurti, V. 3; Affiliation: 1: Nanoelectronic Materials Branch, Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433, USA 2: Hewlett-Packard Laboratories, Palo Alto, California 94304, USA 3: School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA; Source Info: Jan2013, Vol. 87 Issue 2, p020403-1; Subject Term: SCANNING tunneling microscopy; Subject Term: ANTIFERROMAGNETISM; Subject Term: DOMAIN walls (Ferromagnetism); Subject Term: EPITAXY; Subject Term: CONDENSED matter; Number of Pages: 4p; Document Type: Article L3 - 10.1103/PhysRevB.87.020403 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85939416&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Koerner, Hilmar AU - Strong, Robert J. AU - Smith, Matthew L. AU - Wang, David H. AU - Tan, Loon-Seng AU - Lee, Kyung Min AU - White, Timothy J. AU - Vaia, Richard A. T1 - Polymer design for high temperature shape memory: Low crosslink density polyimides JO - Polymer JF - Polymer Y1 - 2013/01/08/ VL - 54 IS - 1 M3 - Article SP - 391 EP - 402 SN - 00323861 AB - Abstract: Shape memory in polymers is a process whereby mechanical energy is microscopically stored, and reversibly recovered within the polymer. Consideration of the viscoelastic and glassy dynamics necessary for each step of the process reveals key molecular characteristics that may improve performance, including a rigid polymer backbone with narrow molecular weight distribution between a low fraction of crosslinks. With this insight to guide high temperature polymer design, aromatic CP2 polyimide and associated single wall carbon nanotube (SWNTs) nanocomposites are shown to have excellent shape memory performance at 220 °C with rapid recovery (<10 s), excellent fixity (>98%), good cyclability and outstanding creep resistance. A narrow glass transition temperature regime (<10 °C) and high fragility (m ∼ 117) affords a narrow triggering window and the ability to spatially localize recovery with a temperature gradient. The addition of up to 3 vol% of dispersed SWNTs improves the rubbery modulus and blocking force without substantially impacting these crucial characteristics. The structure-performance relationships in this material system reinforce the key molecular characteristics for the design of polymers for shape memory. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHAPE memory polymers KW - POLYMER engineering KW - HIGH temperatures KW - MECHANICAL energy KW - ENERGY storage KW - VISCOELASTICITY KW - CROSSLINKED polymers KW - POLYIMIDES KW - Nanocomposite KW - Polyimide KW - Shape memory N1 - Accession Number: 84646071; Koerner, Hilmar 1 Strong, Robert J. 1 Smith, Matthew L. 1 Wang, David H. 1 Tan, Loon-Seng 1 Lee, Kyung Min 1 White, Timothy J. 1 Vaia, Richard A.; Email Address: richard.vaia@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7750, United States; Source Info: Jan2013, Vol. 54 Issue 1, p391; Subject Term: SHAPE memory polymers; Subject Term: POLYMER engineering; Subject Term: HIGH temperatures; Subject Term: MECHANICAL energy; Subject Term: ENERGY storage; Subject Term: VISCOELASTICITY; Subject Term: CROSSLINKED polymers; Subject Term: POLYIMIDES; Author-Supplied Keyword: Nanocomposite; Author-Supplied Keyword: Polyimide; Author-Supplied Keyword: Shape memory; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.polymer.2012.11.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84646071&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, J. O. AU - Sengupta, S. AU - Barve, A. V. AU - Sharma, Y. D. AU - Adhikary, S. AU - Lee, S. J. AU - Noh, S. K. AU - Allen, M. S. AU - Allen, J. W. AU - Chakrabarti, S. AU - Krishna, S. T1 - Multi-stack InAs/InGaAs sub-monolayer quantum dots infrared photodetectors. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2013/01/07/ VL - 102 IS - 1 M3 - Article SP - 011131 EP - 011131-4 PB - American Institute of Physics SN - 00036951 AB - We report on the design and performance of multi-stack InAs/InGaAs sub-monolayer (SML) quantum dots (QD) based infrared photodetectors (SML-QDIP). SML-QDIPs are grown with the number of stacks varied from 2 to 6. From detailed radiometric characterization, it is determined that the sample with 4 SML stacks has the best performance. The s-to-p (s/p) polarized spectral response ratio of this device is measured to be 21.7%, which is significantly higher than conventional Stranski-Krastanov quantum dots (∼13%) and quantum wells (∼2.8%). This result makes the SML-QDIP an attractive candidate in applications that require normal incidence. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM electronics KW - QUANTUM dots KW - SEMICONDUCTORS KW - SPECTRAL sensitivity KW - QUANTUM wells N1 - Accession Number: 84738238; Kim, J. O. 1 Sengupta, S. 2 Barve, A. V. 1 Sharma, Y. D. 1 Adhikary, S. 2 Lee, S. J. 3 Noh, S. K. 3 Allen, M. S. 4 Allen, J. W. 4 Chakrabarti, S. 2 Krishna, S. 1; Affiliation: 1: Department of Electrical and Computer Engineering, Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87106, 2: Department of Electrical Engineering, Center for Nanoelectronics, Indian Institute of Technology Bombay, Mumbai-400076, 3: Korean Research Institute of Standards and Science, Daejeon 305-340, 4: Sensors Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433,; Source Info: 1/7/2013, Vol. 102 Issue 1, p011131; Subject Term: QUANTUM electronics; Subject Term: QUANTUM dots; Subject Term: SEMICONDUCTORS; Subject Term: SPECTRAL sensitivity; Subject Term: QUANTUM wells; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 1p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.4774383 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84738238&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Szmulowicz, F. AU - Brown, G. J. T1 - Calculation of interface roughness scattering-limited vertical and horizontal mobilities in InAs/GaSb superlattices as a function of temperature. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2013/01/07/ VL - 113 IS - 1 M3 - Article SP - 014302 EP - 014302-14 PB - American Institute of Physics SN - 00218979 AB - Superlattice transport has acquired new relevance owing to the current interest in InAs/GaSb and other superlattices (SL) for third-generation infrared detector focal plane arrays. Interface-roughness scattering (IRS) is known to limit carrier mobilities at low temperatures. Whereas horizontal (in-plane) transport measurements are standard, perpendicular transport measurements (across SL layers)-the ones relevant to the operation of infrared sensors-are non-routine and seldom performed; vertical SL transport is also less well studied theoretically. Therefore, we extend our previous work on low-temperature SL transport by studying horizontal and vertical IRS-limited transport in InAs/GaSb SLs as a function of temperature, SL parameters, and the degree of roughness. Electron mobilities are calculated by solving the Boltzmann equation with temperature-dependent bands and carrier screening, and the results are discussed by analyzing the behavior of the relaxation rates and spectral mobilities, defined as mobilities as a function of carrier energy. New computational tools are devised to handle the implicit integral equation for the horizontal relaxation rates. We find that the behavior of the relaxation rates and spectral mobilities undergoes a change for energies below and above the conduction band bandwidth, which dictates the ultimate behavior of mobilities as a function of temperature. The calculated mobilities are found to display a rich variety of behaviors as a function of temperature, either increasing, decreasing, or remaining relatively constant, depending on the correlation length of interface roughness, Λ, and the conduction band bandwidth. Since the horizontal mobility is a double-valued function of Λ, the temperature dependence of mobilities can be used to eliminate this indeterminacy in order to assess the degree of interface roughness. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - SCATTERING (Physics) KW - INDIUM arsenide KW - GALLIUM antimonide KW - SURFACE roughness KW - INFRARED detectors KW - LOW temperatures N1 - Accession Number: 84630953; Szmulowicz, F. 1 Brown, G. J. 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park Ave., Dayton, Ohio 45469-0072, 2: Materials & Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433-7707,; Source Info: Jan2013, Vol. 113 Issue 1, p014302; Subject Term: SUPERLATTICES; Subject Term: SCATTERING (Physics); Subject Term: INDIUM arsenide; Subject Term: GALLIUM antimonide; Subject Term: SURFACE roughness; Subject Term: INFRARED detectors; Subject Term: LOW temperatures; Number of Pages: 1p; Illustrations: 1 Chart, 27 Graphs; Document Type: Article L3 - 10.1063/1.4772724 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84630953&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Singh, A.R.P. AU - Nag, S. AU - Chattopadhyay, S. AU - Ren, Y. AU - Tiley, J. AU - Viswanathan, G.B. AU - Fraser, H.L. AU - Banerjee, R. T1 - Mechanisms related to different generations of γ′ precipitation during continuous cooling of a nickel base superalloy JO - Acta Materialia JF - Acta Materialia Y1 - 2013/01// VL - 61 IS - 1 M3 - Article SP - 280 EP - 293 SN - 13596454 AB - Abstract: This paper focuses on developing a mechanistic understanding of the process of multiple nucleation bursts leading to the formation of multiple generations (or populations) of γ′ precipitates with different size distributions, during the continuous cooling of a commercially used nickel base superalloy. This mechanistic understanding has been developed based on a number of critical experimental results: direct observation of the multiple nucleation bursts during in situ X-ray diffraction studies in the synchrotron, characterization of the size distributions associated with the different populations of γ′ precipitates by coupling multiple imaging techniques at the appropriate length scale and detailed compositional analysis of the γ′ precipitates as well as the γ matrix using atom probe tomography. These analyses reveal that while local compositional equilibrium appears to have been achieved near the γ′/γ interface for the first generation of precipitates, a non-equilibrium long range diffusion profile in the γ matrix is retained during the process of continuous cooling, which is largely responsible for the subsequent nucleation bursts at larger undercooling (or lower temperatures), leading to second and third generations of precipitates. Additionally, since these subsequent generations of precipitates are formed at larger undercoolings, they are typically finer in size scale, exhibit far-from equilibrium compositions and also have very diffuse γ′/γ interfaces, indicating a non-classical precipitation mechanism associated with their formation. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL alloys KW - COOLING KW - HEAT resistant alloys KW - NUCLEATION KW - X-ray diffraction KW - EQUILIBRIUM KW - EFTEM KW - Generations KW - Nickel base superalloy KW - Nucleation ( Spinodal decomposition , Atom probe tomography ) KW - Rene 88 DT N1 - Accession Number: 83298952; Singh, A.R.P. 1 Nag, S. 1 Chattopadhyay, S. 2,3 Ren, Y. 4 Tiley, J. 5 Viswanathan, G.B. 5 Fraser, H.L. 6 Banerjee, R. 1; Email Address: rajarshi.banerjee@unt.edu; Affiliation: 1: Center for Advanced Research and Technology and Department of Materials Science and Engineering, University of North Texas, Denton, TX, USA 2: CSRRI-IIT, MRCAT, Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439, USA 3: Physics Department, Illinois Institute of Technology, Chicago, IL 60616, USA 4: X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439, USA 5: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH, USA 6: Center for the Accelerated Maturation of Materials and Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, USA; Source Info: Jan2013, Vol. 61 Issue 1, p280; Subject Term: NICKEL alloys; Subject Term: COOLING; Subject Term: HEAT resistant alloys; Subject Term: NUCLEATION; Subject Term: X-ray diffraction; Subject Term: EQUILIBRIUM; Author-Supplied Keyword: EFTEM; Author-Supplied Keyword: Generations; Author-Supplied Keyword: Nickel base superalloy; Author-Supplied Keyword: Nucleation ( Spinodal decomposition , Atom probe tomography ); Author-Supplied Keyword: Rene 88 DT; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.actamat.2012.09.058 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83298952&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cummings, Russell M. AU - Schütte, Andreas T1 - Detached-Eddy Simulation of the vortical flow field about the VFE-2 delta wing JO - Aerospace Science & Technology JF - Aerospace Science & Technology Y1 - 2013/01// VL - 24 IS - 1 M3 - Article SP - 66 EP - 76 SN - 12709638 AB - Abstract: The numerical simulation of the flow for the VFE-2 delta wing configuration with rounded leading edges is presented using the Cobalt Navier–Stokes solver. Cobalt uses a cell-centered unstructured hybrid mesh approach, and several numerical results are presented for the steady RANS equations as well as for the unsteady DES and DDES hybrid approaches. Within this paper the focus is related to the dual primary vortex flow topology, especially the sensitivity of the flow to angle of attack and Reynolds number effects. Reasonable results are obtained with both steady RANS and SA-DDES simulations. The results are compared and verified by experimental data, including surface pressure and pressure sensitive paint results, and recommendations for improving future simulations are made. [Copyright &y& Elsevier] AB - Copyright of Aerospace Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VORTEX methods KW - DELTA wing airplanes KW - LARGE eddy simulation models KW - COMPUTER simulation KW - HYBRID systems KW - NAVIER-Stokes equations KW - REYNOLDS number KW - Computational fluid dynamics KW - Delta wing KW - High angle of attack KW - Vortical flow N1 - Accession Number: 85816095; Cummings, Russell M. 1; Email Address: russ.cummings@usafa.edu Schütte, Andreas 2; Affiliation: 1: United States Air Force Academy, USAF Academy, CO, USA 2: German Aerospace Center, DLR, Braunschweig, Germany; Source Info: Jan2013, Vol. 24 Issue 1, p66; Subject Term: VORTEX methods; Subject Term: DELTA wing airplanes; Subject Term: LARGE eddy simulation models; Subject Term: COMPUTER simulation; Subject Term: HYBRID systems; Subject Term: NAVIER-Stokes equations; Subject Term: REYNOLDS number; Author-Supplied Keyword: Computational fluid dynamics; Author-Supplied Keyword: Delta wing; Author-Supplied Keyword: High angle of attack; Author-Supplied Keyword: Vortical flow; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ast.2012.02.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85816095&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanford, Bret AU - Beran, Philip T1 - Optimal thickness distributions of aeroelastic flapping shells JO - Aerospace Science & Technology JF - Aerospace Science & Technology Y1 - 2013/01// VL - 24 IS - 1 M3 - Article SP - 116 EP - 127 SN - 12709638 AB - Abstract: The severe weight limitations of flapping wing micro air vehicles necessitates the use of thin flexible wings, which in turn requires an aeroelastic modeling tool for proper numerical characterization. Furthermore, due to the unconventional nature of these vehicles, wing design guidelines for thrust and/or power considerations are not generally available; numerical design optimization then becomes a valuable tool. This work couples a nonlinear shell model to an unsteady vortex lattice solver, and then computes analytical design gradients: the derivative of aerodynamic force/power quantities with respect to a large vector of thickness variables. Gradient-based optimization is then used to locate the wing structure that maximizes the thrust, or minimizes the power under a thrust constraint, for a variety of shell boundary conditions. Changes in the topological features of the optimal wing thicknesses highlight important aeroelastic interactions that can be exploited for efficient flapping wings. [Copyright &y& Elsevier] AB - Copyright of Aerospace Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - THICKNESS measurement KW - DISTRIBUTION (Probability theory) KW - ORNITHOPTERS KW - MATHEMATICAL optimization KW - AIRPLANE wings KW - NUMERICAL analysis KW - Aeroelasticity KW - Flapping wing KW - Sensitivity analysis KW - Tailoring N1 - Accession Number: 85816101; Stanford, Bret; Email Address: bret.stanford@wpafb.af.mil Beran, Philip 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright–Patterson AFB, OH 45433, United States; Source Info: Jan2013, Vol. 24 Issue 1, p116; Subject Term: AEROELASTICITY; Subject Term: THICKNESS measurement; Subject Term: DISTRIBUTION (Probability theory); Subject Term: ORNITHOPTERS; Subject Term: MATHEMATICAL optimization; Subject Term: AIRPLANE wings; Subject Term: NUMERICAL analysis; Author-Supplied Keyword: Aeroelasticity; Author-Supplied Keyword: Flapping wing; Author-Supplied Keyword: Sensitivity analysis; Author-Supplied Keyword: Tailoring; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.ast.2011.10.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85816101&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kumar, Rakesh AU - Titov, E. V. AU - Levin, D. A. T1 - Development of a Particle-Particle Hybrid Scheme to Simulate Multiscale Transitional Flows. JO - AIAA Journal JF - AIAA Journal Y1 - 2013/01// VL - 51 IS - 1 M3 - Article SP - 200 EP - 217 SN - 00011452 AB - In the present work, a new particle-particle hybrid method that combines the statistical ellipsoidal-statistical Bhatnagar-Gross-Krook and direct simulation Monte Carlo methods is developed. The switching criterion between the two methods is based on the deviation of the cumulative velocity distribution function from Maxwellian as measured by the Kolmogorov-Smirnov statistical test. Unlike other hybrid approaches that use switching criteria based on macroscopic properties, the selection of a particular particle method in a cell is determined by the local Kolmogorov-Smirnov parameter value with respect to a preset global switching criterion. A numerically efficient technique to compute the Kolmogorov-Smirnov parameter was developed to enable the efficient calculation of the degree of nonequilibrium. Two well-known fluid-flow problems, expanding argon flow through a nozzle and hypersonic flow over a blunt body, were studied. The Kolmogorov-Smirnov parameter is shown to demarcate the regions of nonequilibrium from the near-equilibrium regions, and the solutions obtained by the hybrid method are shown to agree well with the benchmark direct simulation Monte Carlo solutions for both case studies. The newly developed hybrid method is also shown to be numerically more efficient than either of the component methods. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIMULATION methods & models KW - RESEARCH KW - FLUID dynamics KW - MONTE Carlo method KW - STATISTICS -- Research KW - EQUILIBRIUM N1 - Accession Number: 85163635; Kumar, Rakesh 1,2,3 Titov, E. V. 1,3,4 Levin, D. A. 5,6; Affiliation: 1: Pennsylvania State University, University Park, Pennsylvania 16802 2: Assistant Professor, Indian Institute of Technology, Department of Aerospace Engineering 3: Member, AIAA 4: Research Engineer, Dynamics Research Corporation, Air Force Research Laboratory/RQAC 5: Professor, Department of Aerospace Engineering, Pennsylvania State University, University Park, Pennsylvania 16802 6: Associate Fellow, AIAA; Source Info: Jan2013, Vol. 51 Issue 1, p200; Subject Term: SIMULATION methods & models; Subject Term: RESEARCH; Subject Term: FLUID dynamics; Subject Term: MONTE Carlo method; Subject Term: STATISTICS -- Research; Subject Term: EQUILIBRIUM; Number of Pages: 18p; Document Type: Article L3 - 10.2514/1.J051722 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85163635&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - ROWE, DEREK A. T1 - FOREIGN MILITARY SALES (FMS), PSEUDO-FMS, AND A RESPONSE TO THE GAO--IS PSEUDO-FMS THE WAY FORWARD? JO - Air Force Law Review JF - Air Force Law Review Y1 - 2013/01// VL - 69 M3 - Article SP - 199 EP - 217 PB - Superintendent of Documents SN - 00948381 AB - The article focuses on the report of the U.S. Government Accountability Office. It discusses two aspects of the United Nations Department of Defenses (DoD) regarding implementation of Foreign Military Sales (FMS) and Pseudo-FMS such as end-use monitoring (EUM) and tracking of transferred military equipment. It highlights benefits to the U.S. which includes interoperability, economy of scale cost-savings and business for U.S. based contractors, and weapon control. KW - ARMS transfers KW - MILITARY supplies KW - WAR KW - CONTRACTORS KW - WEAPONS -- Costs KW - UNITED States. Government Accountability Office KW - UNITED Nations. Dept. of Peace-keeping Operations N1 - Accession Number: 87515708; ROWE, DEREK A. 1; Affiliation: 1: Judge Advocate, United States Air Force; Source Info: 2013, Vol. 69, p199; Subject Term: ARMS transfers; Subject Term: MILITARY supplies; Subject Term: WAR; Subject Term: CONTRACTORS; Subject Term: WEAPONS -- Costs; Company/Entity: UNITED States. Government Accountability Office DUNS Number: Company/Entity: UNITED Nations. Dept. of Peace-keeping Operations DUNS Number: 013632208; Number of Pages: 19p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87515708&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Xiao AU - Hagen, Joshua A. AU - Papautsky, Ian T1 - Paper pump for passive and programmable transport. JO - Biomicrofluidics JF - Biomicrofluidics Y1 - 2013/01// VL - 7 IS - 1 M3 - Article SP - 014107 EP - 014107-11 PB - American Institute of Physics SN - 19321058 AB - In microfluidic systems, a pump for fluid-driving is often necessary. To keep the size of microfluidic systems small, a pump that is small in size, light-weight and needs no external power source is advantageous. In this work, we present a passive, simple, ultra-low-cost, and easily controlled pumping method based on capillary action of paper that pumps fluid through conventional polymer-based microfluidic channels with steady flow rate. By using inexpensive cutting tools, paper can be shaped and placed at the outlet port of a conventional microfluidic channel, providing a wide range of pumping rates. A theoretical model was developed to describe the pumping mechanism and aid in the design of paper pumps. As we show, paper pumps can provide steady flow rates from 0.3 μl/s to 1.7 μl/s and can be cascaded to achieve programmable flow-rate tuning during the pumping process. We also successfully demonstrate transport of the most common biofluids (urine, serum, and blood). With these capabilities, the paper pump has the potential to become a powerful fluid-driving approach that will benefit the fielding of microfluidic systems for point-of-care applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Biomicrofluidics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOLOGICAL transport KW - PUMPING machinery KW - PAPER industry -- Equipment & supplies KW - MICROFLUIDICS KW - CAPILLARY flow (Fluid dynamics) KW - POINT-of-care testing KW - SERUM N1 - Accession Number: 85808062; Wang, Xiao 1 Hagen, Joshua A. 2 Papautsky, Ian 1; Affiliation: 1: BioMicroSystems Laboratory, School of Electronic and Computing Systems, University of Cincinnati, Cincinnati, Ohio 45221, 2: Air Force Research Laboratory, 711th Human Performance Wing, Wright-Patterson Air Force Base, Dayton, Ohio 45433,; Source Info: Jan2013, Vol. 7 Issue 1, p014107; Subject Term: BIOLOGICAL transport; Subject Term: PUMPING machinery; Subject Term: PAPER industry -- Equipment & supplies; Subject Term: MICROFLUIDICS; Subject Term: CAPILLARY flow (Fluid dynamics); Subject Term: POINT-of-care testing; Subject Term: SERUM; NAICS/Industry Codes: 322121 Paper (except Newsprint) Mills; NAICS/Industry Codes: 424110 Printing and Writing Paper Merchant Wholesalers; NAICS/Industry Codes: 424130 Industrial and Personal Service Paper Merchant Wholesalers; NAICS/Industry Codes: 333911 Pump and Pumping Equipment Manufacturing; NAICS/Industry Codes: 333910 Pump and compressor manufacturing; NAICS/Industry Codes: 325414 Biological Product (except Diagnostic) Manufacturing; Number of Pages: 1p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.4790819 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85808062&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Betancor, Lorena AU - Johnson, Glenn R. AU - Luckarift, Heather R. T1 - Stabilized Laccases as Heterogeneous Bioelectrocatalysts. JO - ChemCatChem JF - ChemCatChem Y1 - 2013/01// VL - 5 IS - 1 M3 - Article SP - 46 EP - 60 SN - 18673880 AB - Typically, the use of heterogeneous enzyme catalysis is aimed at sustainability, reusability, or enhanced functionality of the biocatalyst and is achieved by immobilizing enzymes onto a support matrix or at a defined interface. Controlled enzyme immobilization is particularly important in bioelectrocatalysis because the catalyst must be effectively connected to a transducer to exploit its activity. This Review discusses what must be addressed for coupling biocatalysts to an electrode and the toolbox of methods that are available for achieving this outcome. As an illustration, we focus on the immobilization and stabilization of laccases at electronic interfaces. Historically, laccases have been used for the decolorization of dyes and for the synthesis of bio-organic compounds; however, more recently, they have been applied to the fields of sensing and energy harvesting.1-3 There is an ever-increasing focus on the development of new energy technologies, in which laccases find application (e.g., as cathodic catalysts in enzymatic fuel cells). Herein, we discuss the heterogeneous laccase biocatalysts that have been reported over the past 10-15 years and discuss why laccases continue to be biotechnologically relevant enzymes. Various methods for the immobilization of laccases are described, including the use of nanoscale supports and a range of encapsulation and cross-linking chemistries. We consider the application of immobilized laccases to the food industry, in the synthesis of pharmaceuticals, and in environmental applications, specifically in cases in which stabilization through heterogenization of the enzyme is critical to the application. We also include a consideration of electrochemical biosensors and the specific incorporation of laccases on the surfaces of transducers. [ABSTRACT FROM AUTHOR] AB - Copyright of ChemCatChem is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENZYME activation KW - RESEARCH KW - LACCASE KW - ELECTRIC apparatus & appliances KW - ENZYME electrodes KW - FUEL cells KW - biocatalysis KW - biosensors KW - electron transfer KW - immobilization KW - metalloenzymes N1 - Accession Number: 84483170; Betancor, Lorena 1 Johnson, Glenn R. 2 Luckarift, Heather R. 2,3; Affiliation: 1: Laboratorio de Biotecnología, Facultad de Ingeniería, Universidad ORT Uruguay, Cuareim 1451, Montevideo (Uruguay) 2: Airbase Sciences Division, Air Force Research Laboratory, 139 Barnes Drive, Tyndall Air Force Base, Florida 32403 (USA) 3: Universal Technology Corporation, 1270 N. Fairfield Drive, Dayton Ohio 45432 (USA); Source Info: Jan2013, Vol. 5 Issue 1, p46; Subject Term: ENZYME activation; Subject Term: RESEARCH; Subject Term: LACCASE; Subject Term: ELECTRIC apparatus & appliances; Subject Term: ENZYME electrodes; Subject Term: FUEL cells; Author-Supplied Keyword: biocatalysis; Author-Supplied Keyword: biosensors; Author-Supplied Keyword: electron transfer; Author-Supplied Keyword: immobilization; Author-Supplied Keyword: metalloenzymes; NAICS/Industry Codes: 811412 Appliance Repair and Maintenance; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; NAICS/Industry Codes: 335990 All other electrical equipment and component manufacturing; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; Number of Pages: 15p; Document Type: Article L3 - 10.1002/cctc.201200611 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84483170&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Crouch, Robert AU - Oskay, Caglar AU - Clay, Stephen T1 - Multiple spatio-temporal scale modeling of composites subjected to cyclic loading. JO - Computational Mechanics JF - Computational Mechanics Y1 - 2013/01// VL - 51 IS - 1 M3 - Article SP - 93 EP - 107 PB - Springer Science & Business Media B.V. SN - 01787675 AB - This manuscript presents a multiscale modeling methodology for failure analysis of composites subjected to cyclic loading conditions. Computational homogenization theory with multiple spatial and temporal scales is employed to devise the proposed methodology. Multiple spatial scales address the disparity between the length scale of material heterogeneities and the overall structure, whereas multiple temporal scales with almost periodic fields address the disparity between the load period and overall life under cyclic loading. The computational complexity of the multiscale modeling approach is reduced by employing a meso-mechanical model based on eigendeformation based homogenization with symmetric coefficients in the space domain, and an adaptive time stepping strategy based on a quadratic multistep method with error control in the time domain. The proposed methodology is employed to simulate the response of graphite fiber-reinforced epoxy composites. Model parameters are calibrated using a suite of experiments conducted on unidirectionally reinforced specimens subjected to monotonic and cyclic loading. The calibrated model is employed to predict damage progression in quasi-isotropic specimens. The capabilities of the model are validated using acoustic emission testing. [ABSTRACT FROM AUTHOR] AB - Copyright of Computational Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPATIO-temporal variation KW - MODELS & modelmaking KW - COMPOSITE materials KW - CYCLIC loading KW - FAILURE analysis (Engineering) KW - HOMOGENIZATION (Differential equations) KW - FRACTURE mechanics KW - Composites KW - Computational homogenization KW - Damage mechanics KW - Fatigue KW - Multiscale modeling N1 - Accession Number: 84403261; Crouch, Robert 1 Oskay, Caglar 1; Email Address: caglar.oskay@vanderbilt.edu Clay, Stephen 2; Affiliation: 1: Department of Civil and Environmental Engineering, Vanderbilt University, VU Station B#351831, 2301 Vanderbilt Place Nashville 37235 USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base 45433 USA; Source Info: Jan2013, Vol. 51 Issue 1, p93; Subject Term: SPATIO-temporal variation; Subject Term: MODELS & modelmaking; Subject Term: COMPOSITE materials; Subject Term: CYCLIC loading; Subject Term: FAILURE analysis (Engineering); Subject Term: HOMOGENIZATION (Differential equations); Subject Term: FRACTURE mechanics; Author-Supplied Keyword: Composites; Author-Supplied Keyword: Computational homogenization; Author-Supplied Keyword: Damage mechanics; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Multiscale modeling; Number of Pages: 15p; Document Type: Article L3 - 10.1007/s00466-012-0707-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84403261&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kay, Steven AU - Ding, Quan AU - Rangaswamy, Muralidhar T1 - Sensor Integration by Joint PDF Construction using the Exponential Family. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2013/01// VL - 49 IS - 1 M3 - Article SP - 580 EP - 593 SN - 00189251 AB - We investigate the problem of sensor integration to combine all the available information in a multi-sensor setting from a statistical standpoint. Specifically, we propose a novel method of constructing the joint probability density function (pdf) of the measurements from all the sensors based on the exponential family and small signal assumption. The constructed pdf only requires knowledge of the joint pdf under a reference hypothesis and, hence, is useful in many practical cases. Examples and simulation results show that our method requires less information compared with existing methods but attains comparable detection/classification performance. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PDF (Computer file format) KW - GEOMETRICAL constructions KW - INFORMATION theory KW - MAXIMUM likelihood statistics KW - DENSITY functionals KW - SIGNAL-to-noise ratio KW - Biomedical measurements KW - Joints KW - Maximum likelihood estimation KW - Probability density function KW - Radar KW - Training data KW - Vectors N1 - Accession Number: 84742629; Kay, Steven 1 Ding, Quan 1 Rangaswamy, Muralidhar 2; Affiliation: 1: University of Rhode Island 2: Air Force Research Laboratory; Source Info: Jan2013, Vol. 49 Issue 1, p580; Subject Term: PDF (Computer file format); Subject Term: GEOMETRICAL constructions; Subject Term: INFORMATION theory; Subject Term: MAXIMUM likelihood statistics; Subject Term: DENSITY functionals; Subject Term: SIGNAL-to-noise ratio; Author-Supplied Keyword: Biomedical measurements; Author-Supplied Keyword: Joints; Author-Supplied Keyword: Maximum likelihood estimation; Author-Supplied Keyword: Probability density function; Author-Supplied Keyword: Radar; Author-Supplied Keyword: Training data; Author-Supplied Keyword: Vectors; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TAES.2013.6404121 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84742629&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Choi, Sukwon AU - Heller, Eric R. AU - Dorsey, Donald AU - Vetury, Ramakrishna AU - Graham, Samuel T1 - The Impact of Bias Conditions on Self-Heating in AlGaN/GaN HEMTs. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices Y1 - 2013/01// VL - 60 IS - 1 M3 - Article SP - 159 EP - 162 SN - 00189383 AB - The thermal response of AlGaN/GaN high electron mobility transistors directly correlates with the overall performance and reliability of these devices. In general, a hot spot develops near the drain end of the gate electrode during power dissipation. The device channel temperature was examined via micro-Raman spectroscopy under various bias conditions where power dissipation levels were identical. Under these bias conditions, difference in internal states (sheet carrier density and electric field distribution) within the device alters the heat generation profile across the channel. High Vds conditions lead to significantly higher channel temperature compared to that for low Vds conditions although the power dissipation is kept constant. Experimental results show \sim\!\!\13\ ^\circ\C deviation between Vds = \45\ \V and Vds = \7\ \V cases when the power dissipation is 4.5 W/mm. This suggests that bias conditions may have a relatively significant impact on device reliability and that this effect must be considered when building thermal models of devices under operation or undergoing accelerated life testing. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - HIGH electron mobility transistors KW - RAMAN effect KW - LIGHT -- Scattering KW - SEMICONDUCTORS KW - TEMPERATURE measurements KW - CALORIMETRY KW - Aluminum gallium nitride KW - Gallium nitride KW - Gallium nitride (GaN) KW - HEMTs KW - high electron mobility transistors (HEMTs) KW - Logic gates KW - MODFETs KW - Phonons KW - Raman scattering KW - semiconductor device reliability KW - Temperature measurement N1 - Accession Number: 84489933; Choi, Sukwon 1 Heller, Eric R. 2 Dorsey, Donald 2 Vetury, Ramakrishna 3 Graham, Samuel 4; Affiliation: 1: The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA 3: Defense and Power Business Unit, RF Micro Devices, Charlotte, NC, USA 4: The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology , Atlanta, GA, USA; Source Info: Jan2013, Vol. 60 Issue 1, p159; Subject Term: GALLIUM nitride; Subject Term: HIGH electron mobility transistors; Subject Term: RAMAN effect; Subject Term: LIGHT -- Scattering; Subject Term: SEMICONDUCTORS; Subject Term: TEMPERATURE measurements; Subject Term: CALORIMETRY; Author-Supplied Keyword: Aluminum gallium nitride; Author-Supplied Keyword: Gallium nitride; Author-Supplied Keyword: Gallium nitride (GaN); Author-Supplied Keyword: HEMTs; Author-Supplied Keyword: high electron mobility transistors (HEMTs); Author-Supplied Keyword: Logic gates; Author-Supplied Keyword: MODFETs; Author-Supplied Keyword: Phonons; Author-Supplied Keyword: Raman scattering; Author-Supplied Keyword: semiconductor device reliability; Author-Supplied Keyword: Temperature measurement; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TED.2012.2224115 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84489933&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Szmulowicz, F. AU - Haugan, H.J. AU - Elhamri, S. AU - Brown, G.J. T1 - Calculation of the temperature dependence of the vertical and horizontal mobilities in InAs/GaSb superlattices JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2013/01// VL - 56 M3 - Article SP - 76 EP - 79 SN - 13504495 AB - Abstract: In order to limit cooling requirements, it is important to operate superlattice devices such as infrared detectors at the highest possible temperatures consistent with maintaining satisfactory figures of merit regarding signal and noise. One of the characteristics governing the device performance is vertical carrier mobility, although only horizontal mobilities are routinely measured. Recently, we calculated low-temperature vertical and horizontal mobilities, as limited by interface roughness scattering, for type-II InAs/GaSb superlattices as a function of SL dimensions and the degree of roughness. We found that the horizontal mobility was a double-valued function of the roughness correlation length, Λ. Here, we show that the indeterminacy of Λ can be overcome by comparing the temperature dependence of the calculated and measured mobilities; hence, we extend the calculation to higher temperatures. While the scattering mechanism itself is temperature independent, the band structure and the carrier distribution are temperature-dependent. As a function of temperature, we find that as a function of the correlation length, mobilities can increase, decrease, or remain constant. This behavior is explained on the basis of the physics of the problem. [Copyright &y& Elsevier] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - INFRARED detectors KW - LIGHT -- Scattering KW - INFRARED technology KW - SURFACE roughness KW - PHYSICAL sciences KW - Electron mobility KW - InAs/GaSb KW - Infrared detector KW - Interface roughness scattering KW - Superlattice N1 - Accession Number: 84598264; Szmulowicz, F. 1,2; Email Address: frank.szmulowicz.ctr@wpafb.af.mil Haugan, H.J. 3 Elhamri, S. 4 Brown, G.J. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, WPAFB, OH 45433-7707, United States 2: U. Dayton Res. Inst., 300 College Park Ave., Dayton, OH 45469-0072, United States 3: Universal Technologies Corporation, Dayton, OH 45432-2600, United States 4: Dept. of Physics, U. Dayton, Dayton, OH 45469-2314, United States; Source Info: Jan2013, Vol. 56, p76; Subject Term: SUPERLATTICES; Subject Term: INFRARED detectors; Subject Term: LIGHT -- Scattering; Subject Term: INFRARED technology; Subject Term: SURFACE roughness; Subject Term: PHYSICAL sciences; Author-Supplied Keyword: Electron mobility; Author-Supplied Keyword: InAs/GaSb; Author-Supplied Keyword: Infrared detector; Author-Supplied Keyword: Interface roughness scattering; Author-Supplied Keyword: Superlattice; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.infrared.2012.10.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84598264&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Luo, Jie AU - Cooper, John AU - Cao, Chengyu AU - Pham, Khanh T1 - Cooperative adaptive control of a two-agent system. JO - International Journal of Control JF - International Journal of Control Y1 - 2013/01// VL - 86 IS - 1 M3 - Article SP - 127 EP - 138 SN - 00207179 AB - This article presents a new cooperative control framework using an ℒ1adaptive control for a two-agent dynamic system in the presence of uncertainties. Each agent has its own decentralised controller based on the extended dynamics which include its own local measurements, as well as any information available from the other agent. Each ℒ1adaptive control law is designed to achieve the local objective of the host agent, as well as handle both local and interconnected uncertainties from the other agent. The global objective is achieved when each agent achieves its own local objective. The stability condition for the global closed-loop system is derived, and simulation results illustrate the effectiveness of the presented cooperative control framework. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Control is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COOPERATIVE control systems KW - ADAPTIVE control systems KW - MULTIAGENT systems KW - UNCERTAINTY KW - CLOSED loop systems KW - COMPUTER simulation KW - adaptive control KW - cooperative control KW - two-agent system N1 - Accession Number: 84365514; Luo, Jie 1 Cooper, John 1 Cao, Chengyu 1; Email Address: ccao@engr.uconn.edu Pham, Khanh 2; Affiliation: 1: Department of Mechanical Engineering, University of Connecticut, Storrs, CT 06269, USA 2: Air Force Research Laboratory Space Vehicles Directorate, Kirtland Air Force Base, NM 87117, USA; Source Info: Jan2013, Vol. 86 Issue 1, p127; Subject Term: COOPERATIVE control systems; Subject Term: ADAPTIVE control systems; Subject Term: MULTIAGENT systems; Subject Term: UNCERTAINTY; Subject Term: CLOSED loop systems; Subject Term: COMPUTER simulation; Author-Supplied Keyword: adaptive control; Author-Supplied Keyword: cooperative control; Author-Supplied Keyword: two-agent system; Number of Pages: 12p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1080/00207179.2012.720384 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84365514&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Borg, J.P. AU - Morrissey, M.P. AU - Perich, C.A. AU - Vogler, T.J. AU - Chhabildas, L.C. T1 - In situ velocity and stress characterization of a projectile penetrating a sand target: Experimental measurements and continuum simulations JO - International Journal of Impact Engineering JF - International Journal of Impact Engineering Y1 - 2013/01// VL - 51 M3 - Article SP - 23 EP - 35 SN - 0734743X AB - Abstract: Understanding the impact, penetration and cavity formation of heterogeneous granular systems is of fundamental importance to a wide variety of research endeavors. In this work a series of experiments were conducted in order to investigate the penetration dynamics of loose dry sand. High-speed photography coupled with a particle image velocimetry (PIV) technique was used to capture both the grain and bulk response of the penetration event, while buried quartz gages simultaneously recorded transmitted stress wave profiles. Depth of penetration was measured via postmortem examination. Experiments were conducted over a velocity range of 30–200 m/s using both cylindrical and spherical projectiles in a unique semi-infinite experimental configuration in order to directly observe a cross-section of the impact and penetration event. The experimental results are compared to simple continuum Eulerian hydrocode simulations and an analytic penetration model. The simulations are not able to resolve both stress and velocity measurements. However, the simulations do reproduce the depth of penetration for a wide variety of penetration experiments. [Copyright &y& Elsevier] AB - Copyright of International Journal of Impact Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - CONTINUUM (Mathematics) KW - IMPACT (Mechanics) KW - SIMULATION methods & models KW - INHOMOGENEOUS materials KW - HIGH-speed photography KW - PARTICLE image velocimetry KW - Hydrodynamic simulations KW - Particle image velocimetry KW - Penetration dynamics KW - Sand N1 - Accession Number: 83455016; Borg, J.P. 1; Email Address: john.borg@marquette.edu Morrissey, M.P. 1 Perich, C.A. 1 Vogler, T.J. 2 Chhabildas, L.C. 3; Affiliation: 1: Department of Mechanical Engineering, Marquette University, 1515 W. Wisconsin Ave, Milwaukee, WI 53233, USA 2: Sandia National Laboratories, M.S. 9042, Livermore, CA 94550, USA 3: United States Air Force, Eglin Air Force Base, AFRL/RW, Eglin, FL 32542, USA; Source Info: Jan2013, Vol. 51, p23; Subject Term: STRAINS & stresses (Mechanics); Subject Term: CONTINUUM (Mathematics); Subject Term: IMPACT (Mechanics); Subject Term: SIMULATION methods & models; Subject Term: INHOMOGENEOUS materials; Subject Term: HIGH-speed photography; Subject Term: PARTICLE image velocimetry; Author-Supplied Keyword: Hydrodynamic simulations; Author-Supplied Keyword: Particle image velocimetry; Author-Supplied Keyword: Penetration dynamics; Author-Supplied Keyword: Sand; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.ijimpeng.2012.07.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83455016&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dennis, Scott T. T1 - Undergraduate aeroelasticity: the typical section idealization re-examined. JO - International Journal of Mechanical Engineering Education JF - International Journal of Mechanical Engineering Education Y1 - 2013/01// VL - 41 IS - 1 M3 - Article SP - 72 EP - 91 SN - 03064190 AB - A simple typical section approach to aircraft wing bending-torsion divergence and flutter is presented. The approach can be used to illustrate the significant effects of wing sweep and material orthotropy in response to either steady or a simplified unsteady aerodynamic loading. This paper proposes that the typical section model, despite its well known deficiencies as a predictive tool, is appropriate as a learning device at the undergraduate level. The influences of wing sweep, material orthotropy and aerodynamic damping can be sequentially introduced with the aid of a single model. Indeed, the typical section approach outlined herein can be the unifying model that complements existing textbook presentations. Divergence and flutter velocities for a graphite-epoxy wing configuration are shown; the solution spans all angles of sweep and fiber orientations. Further, the approach is implemented in an MS Excel spreadsheet. The graphical user interface uses a notional wing geometry to aid in illustration and visualization during class or during individual study. The velocity root locus is plotted in real time based on 13 user inputs. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Mechanical Engineering Education is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - TORSION KW - DIVERGENCE theorem KW - ORTHOTROPY (Mechanics) KW - GRAPHITE KW - DAMPING (Mechanics) KW - graphical user interface KW - structural tailoring KW - undergraduate aeroelasticity N1 - Accession Number: 92676816; Dennis, Scott T. 1; Affiliation: 1: United States Air Force Academy; Source Info: Jan2013, Vol. 41 Issue 1, p72; Subject Term: AEROELASTICITY; Subject Term: TORSION; Subject Term: DIVERGENCE theorem; Subject Term: ORTHOTROPY (Mechanics); Subject Term: GRAPHITE; Subject Term: DAMPING (Mechanics); Author-Supplied Keyword: graphical user interface; Author-Supplied Keyword: structural tailoring; Author-Supplied Keyword: undergraduate aeroelasticity; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 20p; Illustrations: 10 Graphs; Document Type: Article L3 - 10.7227/IJMEE.41.1.7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92676816&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Karnesky, James AU - Damazo, Jason AU - Chow-Yee, Kliulai AU - Rusinek, Alexis AU - Shepherd, Joseph E. T1 - Plastic deformation due to reflected detonation JO - International Journal of Solids & Structures JF - International Journal of Solids & Structures Y1 - 2013/01// VL - 50 IS - 1 M3 - Article SP - 97 EP - 110 SN - 00207683 AB - Abstract: We report the experimental conditions and results for a series of experiments involving detonation loading of steel tubes alongside computational comparisons performed using an analytic one-dimensional model and a finite element simulation. To achieve plastic deformation, thin-walled steel tubes were filled with a stoichiometric ethylene–oxygen mixture and detonated. The range of initial pressures covered the span from entirely elastic to fully plastic deformation modes. A unique mode of periodic radial deformation was discovered. A model for the pressure load on the tube wall was developed and tested against experimental measurements. Building on the experimental results, we discuss theoretical and computational models describing these experiments. The simplest model considers the oscillation of a single degree of freedom of the tube’s cross section. Using this simple model, we explain that the periodic deformation observed in the experiment is the result of interference between the reflected shock wave and the elastic oscillations set in motion by the incident detonation. To capture the effects of boundary conditions and wave propagation, we performed computations using a two-dimensional axisymmetric model of the tube wall. For the mild steel tubes this required material testing, and the resulting constitutive relation proved to be limited. As a result, fidelity with experiments was much greater in the case of the stainless steel tubes. [Copyright &y& Elsevier] AB - Copyright of International Journal of Solids & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASTICITY KW - DEFORMATIONS (Mechanics) KW - LOADS (Mechanics) KW - FINITE element method KW - STEEL tubes KW - STAINLESS steel KW - Constitutive laws KW - Explosions KW - Finite element KW - Gaseous detonation KW - Plasticity KW - Strain-rate N1 - Accession Number: 83164304; Karnesky, James 1 Damazo, Jason 2; Email Address: damazo@caltech.edu Chow-Yee, Kliulai 3 Rusinek, Alexis 4 Shepherd, Joseph E. 2; Affiliation: 1: Air Force Research Laboratory WPAFB, OH 45431, USA 2: California Institute of Technology, Pasadena, CA 91125, USA 3: UC Berkeley, Berkeley, CA 94720, USA 4: Laboratory of Mechanic, Biomechanic, Polymers and Structures National Engineering School of Metz (ENIM) Ile du Saulcy, Metz Cedex 57045, France; Source Info: Jan2013, Vol. 50 Issue 1, p97; Subject Term: PLASTICITY; Subject Term: DEFORMATIONS (Mechanics); Subject Term: LOADS (Mechanics); Subject Term: FINITE element method; Subject Term: STEEL tubes; Subject Term: STAINLESS steel; Author-Supplied Keyword: Constitutive laws; Author-Supplied Keyword: Explosions; Author-Supplied Keyword: Finite element; Author-Supplied Keyword: Gaseous detonation; Author-Supplied Keyword: Plasticity; Author-Supplied Keyword: Strain-rate; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331210 Iron and Steel Pipe and Tube Manufacturing from Purchased Steel; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.ijsolstr.2012.09.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83164304&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanford, Bret AU - Beran, Philip T1 - Direct flutter and limit cycle computations of highly flexible wings for efficient analysis and optimization JO - Journal of Fluids & Structures JF - Journal of Fluids & Structures Y1 - 2013/01// VL - 36 M3 - Article SP - 111 EP - 123 SN - 08899746 AB - Abstract: The usefulness of flutter as a design metric is diluted for wings with destabilizing (softening) nonlinearities, as a stable high-amplitude limit cycle (subcritical) may exist for flight speeds well below the flutter point. It is thus desired to design aeroelastic structures such that the post-flutter behavior is as benign (i.e., supercritical) as possible, among the other constraints commonly considered in the optimization process. In order to account for these metrics in an accurate and efficient manner, direct tools are utilized to first locate the Hopf-point (flutter speed), and then to obtain a nonlinear perturbation solution via the method of multiple scales. The latter scheme provides a scalar variable whose sign and magnitude dictate the nature of the limit cycle. The accuracy of these methods is demonstrated with a high-aspect-ratio highly flexible wing, modeled with nonlinear beam finite elements and the ONERA dynamic stall tool. Stiffness and inertial design variables are allowed to vary spatially throughout the wing, in order to conduct gradient-based optimization of the limit cycle under flutter and mass constraints. The resulting wing structure demonstrates strongly supercritical behavior, as well as several design conflicts between linear (flutter) and nonlinear (limit cycles) sensitivities, which are not present in the uniform baseline wing. [Copyright &y& Elsevier] AB - Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUTTER (Aerodynamics) KW - STRUCTURAL optimization KW - NONLINEAR theories KW - AEROELASTICITY KW - PERTURBATION (Mathematics) KW - COMPUTATIONAL aerodynamics N1 - Accession Number: 84195572; Stanford, Bret; Email Address: bretkennedystanford@gmail.com Beran, Philip 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Jan2013, Vol. 36, p111; Subject Term: FLUTTER (Aerodynamics); Subject Term: STRUCTURAL optimization; Subject Term: NONLINEAR theories; Subject Term: AEROELASTICITY; Subject Term: PERTURBATION (Mathematics); Subject Term: COMPUTATIONAL aerodynamics; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.jfluidstructs.2012.08.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84195572&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Seletskiy, Denis V. AU - Melgaard, Seth D. AU - Epstein, Richard I. AU - Di Lieto, Alberto AU - Tonelli, Mauro AU - Sheik-Bahae, Mansoor T1 - Precise determination of minimum achievable temperature for solid-state optical refrigeration JO - Journal of Luminescence JF - Journal of Luminescence Y1 - 2013/01// VL - 133 M3 - Article SP - 5 EP - 9 SN - 00222313 AB - Abstract: We measure the minimum achievable temperature (MAT) as a function of excitation wavelength in anti-Stokes fluorescence cooling of high purity Yb3+-doped LiYF4 (Yb:YLF) crystal. Such measurements were obtained by developing a sensitive noncontact thermometry that is based on a two-band differential luminescence spectroscopy using balanced photo-detectors. These measurements are in excellent agreement with the prediction of the laser cooling model and identify MAT of 110K at 1020nm, corresponding to E4–E5 Stark manifold transition in Yb:YLF crystal. [Copyright &y& Elsevier] AB - Copyright of Journal of Luminescence is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REFRIGERATION & refrigerating machinery KW - SOLID state chemistry KW - WAVELENGTHS KW - FLUORESCENCE KW - YTTERBIUM KW - TEMPERATURE measurements KW - LUMINESCENCE spectroscopy KW - Anti-Stokes luminescence KW - Cryogenic laser cooling KW - Derivative spectroscopy KW - Laser cooling of solids KW - Optical refrigeration KW - Yb:YLF N1 - Accession Number: 83326791; Seletskiy, Denis V. 1,2; Email Address: d.seletskiy@gmail.com Melgaard, Seth D. 1 Epstein, Richard I. 1 Di Lieto, Alberto 3 Tonelli, Mauro 3 Sheik-Bahae, Mansoor 1; Affiliation: 1: University of New Mexico, Physics and Astronomy Department, Albuquerque, NM 87131, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, NM 87117, USA 3: NEST Istituto Nanoscienze, CNR, Dipartimento di Fisica Università di Pisa, Largo B. Pontecorvo 3, 56127 Pisa, Italy; Source Info: Jan2013, Vol. 133, p5; Subject Term: REFRIGERATION & refrigerating machinery; Subject Term: SOLID state chemistry; Subject Term: WAVELENGTHS; Subject Term: FLUORESCENCE; Subject Term: YTTERBIUM; Subject Term: TEMPERATURE measurements; Subject Term: LUMINESCENCE spectroscopy; Author-Supplied Keyword: Anti-Stokes luminescence; Author-Supplied Keyword: Cryogenic laser cooling; Author-Supplied Keyword: Derivative spectroscopy; Author-Supplied Keyword: Laser cooling of solids; Author-Supplied Keyword: Optical refrigeration; Author-Supplied Keyword: Yb:YLF; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 423740 Refrigeration Equipment and Supplies Merchant Wholesalers; NAICS/Industry Codes: 333415 Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing; NAICS/Industry Codes: 333416 Heating equipment and commercial refrigeration equipment manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jlumin.2011.09.045 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83326791&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Quinton, Betty T. AU - Barnes, Paul N. AU - Varanasi, Chakrapani V. AU - Burke, Jack AU - Bang-Hung Tsao AU - Yost, Kevin J. AU - Mukhopadhyay, Sharmila M. T1 - A Comparative Study of Three Different Chemical Vapor Deposition Techniques of Carbon Nanotube Growth on Diamond Films. JO - Journal of Nanomaterials JF - Journal of Nanomaterials Y1 - 2013/01// M3 - Article SP - 1 EP - 9 SN - 16874110 AB - This paper compares between the methods of growing carbon nanotubes (CNTs) on diamond substrates and evaluates the quality of the CNTs and the interfacial strength. One potential application for these materials is a heat sink/spreader for high-power electronic devices. The CNTs and diamond substrates have a significantly higher specific thermal conductivity than traditional heat sink/spreader materials making them good replacement candidates. Only limited research has been performed on these CNT/diamond structures and their suitability of different growth methods. This study investigates three potential chemical vapor deposition (CVD) techniques for growing CNTs on diamond: thermal CVD (T-CVD), microwave plasma-enhanced CVD (MPECVD), and floating catalyst thermal CVD (FCT-CVD). Scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (TEM) were used to analyze themorphology and topology of theCNTs. Raman spectroscopy was used to assess the quality of the CNTs by determining the ID/IG peak intensity ratios. Additionally, the CNT/diamond samples were sonicated for qualitative comparisons of the durability of the CNT forests. T-CVD provided the largest diameter tubes, with catalysts residing mainly at the CNT/diamond interface. The MPE-CVD process yielded non uniform defective CNTs, and FCT-CVD resulted in the smallest diameter CNTs with catalyst particles imbedded throughout the length of the nanotubes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nanomaterials is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL vapor deposition KW - COMPARATIVE studies KW - CARBON nanotubes KW - DIAMOND films KW - CRYSTAL growth KW - SCANNING electron microscopy KW - HEAT sinks N1 - Accession Number: 95401334; Quinton, Betty T. 1,2; Email Address: bettyyanguic@gmail.com Barnes, Paul N. 3 Varanasi, Chakrapani V. 4 Burke, Jack 5 Bang-Hung Tsao 5 Yost, Kevin J. 1 Mukhopadhyay, Sharmila M. 2; Affiliation: 1: Air Force Research Laboratory (AFRL), Wright-Patterson, Air Force Base, OH 45433, USA 2: Wright State University, Dayton, OH 45420, USA 3: Army Research Laboratory, Adelphi, MD 20783, USA 4: Army Research Office, Research Triangle Park, NC 27709, USA 5: University of Dayton Research Institute (UDRI), Dayton, OH 45469, USA; Source Info: 2013, p1; Subject Term: CHEMICAL vapor deposition; Subject Term: COMPARATIVE studies; Subject Term: CARBON nanotubes; Subject Term: DIAMOND films; Subject Term: CRYSTAL growth; Subject Term: SCANNING electron microscopy; Subject Term: HEAT sinks; Number of Pages: 9p; Document Type: Article L3 - 10.1155/2013/356259 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95401334&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Devendorf, Erich AU - Lewis, Kemper T1 - Characterization of the Transient Response of Coupled Optimization in Multidisciplinary Design. JO - Mathematical Problems in Engineering JF - Mathematical Problems in Engineering Y1 - 2013/01// M3 - Article SP - 1 EP - 15 SN - 1024123X AB - Time is an asset of critical importance in a multidisciplinary design process and it is desirable to reduce the amount of time spent designing products and systems. Design is an iterative activity and designers consume a significant portion of the product development process negotiating a mutually acceptable solution. The amount of time necessary to complete a design depends on the number and duration of design iterations. This paper focuses on accurately characterizing the number of iterations required for designers to converge to an equilibrium solution in distributed design processes. In distributed design, systems are decomposed into smaller, coupled design problems where individual designers have control over local design decisions and seek to achieve their own individual objectives. These smaller coupled design optimization problems can be modeled using coupled games and the number of iterations required to reach equilibrium solutions varies based on initial conditions and process architecture. In this paper, we leverage concepts from game theory, classical controls, and discrete systems theory to evaluate and approximate process architectures without carrying out any solution iterations. As a result, we develop an analogy between discrete decisions and a continuous time representation that we analyze using control theoretic techniques. [ABSTRACT FROM AUTHOR] AB - Copyright of Mathematical Problems in Engineering is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL optimization KW - MULTIDISCIPLINARY design optimization KW - ITERATIVE methods (Mathematics) KW - NEW product development KW - DECISION making KW - CONTINUOUS time systems KW - CONTROL theory (Mathematics) N1 - Accession Number: 94814156; Devendorf, Erich 1 Lewis, Kemper 2; Email Address: kelewis@buffalo.edu; Affiliation: 1: Air Force Research Laboratory, Information Directorate, Rome, NY 13044, USA 2: Department of Mechanical and Aerospace Engineering, University, Buffalo--SUNY, Buffalo, NY 14260, USA; Source Info: 2013, p1; Subject Term: MATHEMATICAL optimization; Subject Term: MULTIDISCIPLINARY design optimization; Subject Term: ITERATIVE methods (Mathematics); Subject Term: NEW product development; Subject Term: DECISION making; Subject Term: CONTINUOUS time systems; Subject Term: CONTROL theory (Mathematics); NAICS/Industry Codes: 541613 Marketing Consulting Services; Number of Pages: 15p; Document Type: Article L3 - 10.1155/2013/910209 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94814156&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dukes, Susan F. AU - Bridges, Elizabeth AU - Johantgen, Meg T1 - Occurrence of Secondary Insults of Traumatic Brain Injury in Patients Transported by Critical Care Air Transport Teams From Iraq/Afghanistan: 2003-2006. JO - Military Medicine JF - Military Medicine Y1 - 2013/01// VL - 178 IS - 1 M3 - Article SP - 11 EP - 17 PB - AMSUS SN - 00264075 AB - Traumatic brain injury patients are susceptible to secondary insults to the injured brain. A retrospective cohort study was conducted to describe the occurrence of secondary insults in 63 combat casualties with severe isolated traumatic brain injury who were transported by the U.S. Air Force Critical Care Air Transport Teams (CCATT) from 2003 through 2006. Data were obtained from the Wartime Critical Care Air Transport Database, which describes the patient's physiological state and care as they are transported across the continuum of care from the area of responsibility (Iraq/Afghanistan) to Germany and the United States. Fifty-three percent of the patients had at least one documented episode of a secondary insult. Hyperthermia was the most common secondary insult and was associated with severity of injury. The hyperthermia rate increased across the continuum, which has implications for en route targeted temperature management. Hypoxia occurred most frequently within the area of responsibility, but was rare during CCATT flights, suggesting that concerns for altitude-induced hypoxia may not be a major factor in the decision when to move a patient. Similar research is needed for polytrauma casualties and analysis of the association between physiological status and care across the continuum and long-term outcomes. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BRAIN -- Wounds & injuries KW - HEAD injuries KW - WAR casualties KW - MILITARY personnel KW - ANOXEMIA N1 - Accession Number: 84643644; Dukes, Susan F. 1 Bridges, Elizabeth 2 Johantgen, Meg 3; Affiliation: 1: United States Air Force School of Aerospace Medicine, 2510 5th Street, Wright-Patterson AFB, OH 45433 2: Biobehavioral Nursing and Health Systems, Box 357266, University of Washington, Seattle, WA 98195 3: University of Maryland School of Nursing, 655 West Lombard Street, Baltimore, MD 21201; Source Info: Jan2013, Vol. 178 Issue 1, p11; Subject Term: BRAIN -- Wounds & injuries; Subject Term: HEAD injuries; Subject Term: WAR casualties; Subject Term: MILITARY personnel; Subject Term: ANOXEMIA; Number of Pages: 7p; Document Type: Article L3 - 10.7205/MILMED-D-12-00177 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84643644&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Do, James J. AU - Samuels, Steven M. AU - Adkins, Donald J. AU - Clinard, Matthew E. AU - Koveleskie, Aaron J. T1 - Gender Bias and Pluralistic Ignorance in Perceptions of Fitness Assessments. JO - Military Psychology (American Psychological Association) JF - Military Psychology (American Psychological Association) Y1 - 2013/01// VL - 25 IS - 1 M3 - Article SP - 23 EP - 35 SN - 08995605 AB - Two studies examined the relationship between cadets' views toward women, specifically, attitudes about fitness testing at the United States Air Force Academy (USAFA). Cadets completed measures of views toward women in society, in the military, at USAFA, and fitness testing. Results revealed that many male cadets held sexist attitudes of women in all categories. Cadets who held egalitarian views of women in society and in the military were more likely to support equitable fitness standards. Furthermore, cadets' personal viewpoints differed from their perception of the entire cadet population viewpoint, creating an environment of pluralistic ignorance. That is, cadets believed the collective was more sexist than themselves, suggesting that a vocal minority who perpetuate sexist attitudes may hinder changes in culture. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (American Psychological Association) is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICAL fitness KW - SEX discrimination KW - MILITARY personnel -- Psychology KW - fitness test KW - gender bias KW - pluralistic ignorance KW - sexism KW - USAFA KW - UNITED States. Air Force N1 - Accession Number: 90456641; Do, James J. 1 Samuels, Steven M. 1; Email Address: steven.samuels@usafa.edu Adkins, Donald J. 1 Clinard, Matthew E. 1 Koveleskie, Aaron J. 1; Affiliation: 1: United States Air Force Academy, Colorado; Source Info: Jan2013, Vol. 25 Issue 1, p23; Subject Term: PHYSICAL fitness; Subject Term: SEX discrimination; Subject Term: MILITARY personnel -- Psychology; Author-Supplied Keyword: fitness test; Author-Supplied Keyword: gender bias; Author-Supplied Keyword: pluralistic ignorance; Author-Supplied Keyword: sexism; Author-Supplied Keyword: USAFA; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 713940 Fitness and Recreational Sports Centers; NAICS/Industry Codes: 928110 National Security; Number of Pages: 13p; Document Type: Article L3 - 10.1037/h0094754 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90456641&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Turner, T. J. AU - Shade, P. A. AU - Schuren, J. C. AU - Groeber, M. A. T1 - The influence of microstructure on surface strain distributions in a nickel micro-tension specimen. JO - Modelling & Simulation in Materials Science & Engineering JF - Modelling & Simulation in Materials Science & Engineering Y1 - 2013/01// VL - 21 IS - 1 M3 - Article SP - 1 EP - 23 SN - 09650393 AB - This work presents an integrated experimental and modeling approach for examining the deformation of a pure nickel polycrystal utilizing micromechanical testing and a crystal-based elasto-viscoplastic finite-element model (CPFEM). The objective is to study the influence of microstructure on the heterogeneous deformation in polycrystalline materials, and to utilize a modeling framework to explore aspects of the deformation that are difficult or impossible to measure experimentally. To accomplish this, a microtension specimen containing 259 grains was created from a pure nickel foil material and deformed in uniaxial tension. After the deformation, the specimen was destructively serial sectioned in concert with electron back scattering diffraction, and these data were used to instantiate a CPFEM simulation. The material parameters in the CPFEM model were calibrated by matching the experimental macroscopic stress-strain response of the microtension specimen, and then the simulation results were compared with experimental surface deformations measured with digital image correlation. After validating the simulation results by comparing measured and predicted surface strain distributions, a parametric study of the influence of both crystallographic texture and grain morphology is presented to better understand the influence of microstructure on the development of heterogeneous deformation in the pure nickel polycrystalline material. [ABSTRACT FROM AUTHOR] AB - Copyright of Modelling & Simulation in Materials Science & Engineering is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS science KW - POLYCRYSTALS KW - DEFORMATIONS (Mechanics) KW - VISCOPLASTICITY KW - SCATTERING (Physics) KW - STRAINS & stresses (Mechanics) N1 - Accession Number: 89245143; Turner, T. J. 1 Shade, P. A. 1 Schuren, J. C. 1 Groeber, M. A. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLM, 2230 Tenth Street, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: 2013, Vol. 21 Issue 1, p1; Subject Term: MATERIALS science; Subject Term: POLYCRYSTALS; Subject Term: DEFORMATIONS (Mechanics); Subject Term: VISCOPLASTICITY; Subject Term: SCATTERING (Physics); Subject Term: STRAINS & stresses (Mechanics); Number of Pages: 23p; Document Type: Article L3 - 10.1088/0965-0393/21/1/015002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89245143&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - ABST AU - Pavlova, Evgeniya AU - Coovert, Michael D. AU - Bennett, Winston T1 - Abstract: Trust Development in Computer-Mediated Teams: A Latent Change Score Model. JO - Multivariate Behavioral Research JF - Multivariate Behavioral Research Y1 - 2013/01//Jan/Feb2013 VL - 48 IS - 1 M3 - Abstract SP - 166 EP - 167 SN - 00273171 AB - An abstract of the article "Trust Development in Computer-Mediated Teams: A Latent Change Score Model," by Evgeniya Pavlova and Michael D. Coovert is presented. KW - TELEMATICS KW - TEAMS in the workplace KW - ABSTRACTS KW - COOVERT, Michael D. N1 - Accession Number: 86448798; Pavlova, Evgeniya 1; Email Address: epavlova@mail.usf.edu Coovert, Michael D. 1 Bennett, Winston 2; Affiliation: 1: University of South Florida 2: United States Air Force Research Laboratory; Source Info: Jan/Feb2013, Vol. 48 Issue 1, p166; Subject Term: TELEMATICS; Subject Term: TEAMS in the workplace; Subject Term: ABSTRACTS; People: COOVERT, Michael D.; Number of Pages: 2p; Document Type: Abstract L3 - 10.1080/00273171.2013.752265 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86448798&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dimiduk, D.M. AU - Uchic, M.D. AU - Rao, S.I. AU - Shade, P.A. AU - Woodward, C. AU - Viswanathan, G.B. AU - Nadgorny, E.M. AU - Polasik, S. AU - Norfleet, D.M. AU - Mills, M.J. T1 - Strengthening and plastic flow of Ni 3 Al alloy microcrystals. JO - Philosophical Magazine JF - Philosophical Magazine Y1 - 2013/01// VL - 93 IS - 1-3 M3 - Article SP - 96 EP - 120 SN - 14786435 AB - Ni3Al alloys exhibit remarkable deformation characteristics at small scales that are tied to their unique dislocation core structures. The present work examines microcrystal strengthening and flow for a binary Ni3Al alloy and two alloys containing −0.25% Hf and −1.0% Ta, and evaluates their response relative to known dislocation mechanisms for this material and sample size effects in other materials. The work includes analysis of the flow-stress anomaly mechanisms, dislocation velocity, the single-arm source model, exhaustion strengthening and dislocation multiplication for describing the response of Ni3Al alloy microcrystals. Primary remaining needs are to understand the nature of double cross slip and dislocation sources that trigger the onset of flow and limit size-dependent strengthening. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Magazine is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL-aluminum alloys KW - STRENGTHENING mechanisms in solids KW - PLASTICITY KW - CRYSTAL defects KW - DISLOCATIONS in metals KW - METALS -- Mechanical properties KW - SAMPLE size (Statistics) KW - defect structures KW - dislocations KW - experimental KW - microcrystals KW - Ni3Al KW - plasticity KW - size effects KW - strengthening mechanisms KW - TEM N1 - Accession Number: 84919170; Dimiduk, D.M. 1; Email Address: dennis.dimiduk@wpafb.af.mil Uchic, M.D. 1 Rao, S.I. 2 Shade, P.A. 1 Woodward, C. 1 Viswanathan, G.B. 2 Nadgorny, E.M. 3 Polasik, S. 4 Norfleet, D.M. 4 Mills, M.J. 4; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM Bldg 655, 2230 10th St., Wright-Patterson AFB, OH 45433-7817, USA 2: UES, Inc, 4401 Dayton-Xenia Rd., Dayton, OH 45432, USA 3: Physics Department, Michigan Technological University, Houghton, MI 49931, USA 4: Department of Materials Science and Engineering, The Ohio State University, 2041 College Rd., Columbus, OH 43210, USA; Source Info: Jan2013, Vol. 93 Issue 1-3, p96; Subject Term: NICKEL-aluminum alloys; Subject Term: STRENGTHENING mechanisms in solids; Subject Term: PLASTICITY; Subject Term: CRYSTAL defects; Subject Term: DISLOCATIONS in metals; Subject Term: METALS -- Mechanical properties; Subject Term: SAMPLE size (Statistics); Author-Supplied Keyword: defect structures; Author-Supplied Keyword: dislocations; Author-Supplied Keyword: experimental; Author-Supplied Keyword: microcrystals; Author-Supplied Keyword: Ni3Al; Author-Supplied Keyword: plasticity; Author-Supplied Keyword: size effects; Author-Supplied Keyword: strengthening mechanisms; Author-Supplied Keyword: TEM; Number of Pages: 25p; Document Type: Article L3 - 10.1080/14786435.2012.714085 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84919170&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Muñoz, J. A. AU - Lucas, M. S. AU - Mauger, L. AU - Halevy, I. AU - Horwath, J. AU - Semiatin, S. L. AU - Yuming Xiao AU - Chow, Paul AU - Stone, M. B. AU - Abernathy, D. L. AU - Fultz, B. T1 - Electronic structure and vibrational entropies of fcc Au-Fe alloys. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2013/01// VL - 87 IS - 1 M3 - Article SP - 014301-1 EP - 014301-7 SN - 10980121 AB - Phonon density of states (DOS) curves were measured on alloys of face-centered-cubic (fcc) Au-Fe using nuclear resonant inelastic x-ray scattering (NRIXS) and inelastic neutron scattering (INS). The NRIXS and INS results were combined to obtain the total phonon DOS and the partial phonon DOS curves of Au and Fe atoms from which vibrational entropies were calculated. The main effect on the vibrational entropy of alloying comes from a stiffening of the Au partial phonon DOS with Fe concentration. Force constants were calculated from first principles for several compositions and show a local stiffening of Au-Au bonds close to Fe atoms. The calculated phonon DOS curves reproduce the experimental trend. The stiffening is attributed to two main effects comparable in magnitude: (i) an increase in electron density in the free-electron-like states and (ii) stronger sd hybridization. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC structure KW - PHONONS -- Scattering KW - ALLOYS KW - X-ray scattering KW - PHONONS KW - QUASIPARTICLES (Physics) KW - ELECTRON distribution N1 - Accession Number: 85926697; Muñoz, J. A. 1 Lucas, M. S. 2,3 Mauger, L. 1 Halevy, I. 1 Horwath, J. 2 Semiatin, S. L. 2 Yuming Xiao 4 Chow, Paul 4 Stone, M. B. 5 Abernathy, D. L. 5 Fultz, B. 1; Affiliation: 1: California Institute of Technology, W. M. Keck Laboratory 138-78, Pasadena, California 91125, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 3: UTC Inc., 1270 North Fairfield Road, Dayton, Ohio 45432, USA 4: HPCAT Geophysical Laboratory, Carnegie Institute of Washington, Argonne, Illinois 60439, USA 5: Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, Tennessee 37831, USA; Source Info: Jan2013, Vol. 87 Issue 1, p014301-1; Subject Term: ELECTRONIC structure; Subject Term: PHONONS -- Scattering; Subject Term: ALLOYS; Subject Term: X-ray scattering; Subject Term: PHONONS; Subject Term: QUASIPARTICLES (Physics); Subject Term: ELECTRON distribution; Number of Pages: 7p; Document Type: Article L3 - 10.1103/PhysRevB.87.014301 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85926697&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Burns, Hugh T1 - Shane Borrowman, ed. On the Blunt Edge: Technology in Composition's History and Pedagogy. JO - Rhetoric Review JF - Rhetoric Review Y1 - 2013/01// VL - 32 IS - 1 M3 - Book Review SP - 112 EP - 117 SN - 07350198 AB - The article reviews the book "On the Blunt Edge: Technology in Composition's History and Pedagogy," edited by Shane Borrowman. KW - EDUCATIONAL technology KW - NONFICTION KW - BORROWMAN, Shane KW - ON the Blunt Edge: Technology in Composition's History & Pedagogy (Book) N1 - Accession Number: 84342609; Burns, Hugh 1; Affiliation: 1: Texas Woman's University and The United States Air Force Academy; Source Info: 2013, Vol. 32 Issue 1, p112; Subject Term: EDUCATIONAL technology; Subject Term: NONFICTION; Reviews & Products: ON the Blunt Edge: Technology in Composition's History & Pedagogy (Book); People: BORROWMAN, Shane; Number of Pages: 6p; Document Type: Book Review L3 - 10.1080/07350198.2013.739510 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84342609&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhan, Zhiyong AU - Zhou, Bin AU - Fu, Zhenhong AU - Bright, Frank V. AU - Cartwright, Alexander N. AU - Bartsch, Carrie M. AU - Titus, Albert H. T1 - Filterless optical oxygen sensor based on a CMOS buried double junction photodiode JO - Sensors & Actuators B: Chemical JF - Sensors & Actuators B: Chemical Y1 - 2013/01// VL - 176 M3 - Article SP - 729 EP - 735 SN - 09254005 AB - Abstract: We present a custom CMOS IC with a buried double junction (BDJ) photodiode to detect and process the optical signal, eliminating the need for any off-chip optical filters. The on-chip signal processing circuitry improves the desired signal extraction from the optical background noise. Since the IC is manufactured using standard commercial fabrication processes with no post-processing necessary, the system can ultimately be low cost to fabricate. Additionally, because of the CMOS integration, it will consume little power when operating, and even less during stand-by. [Copyright &y& Elsevier] AB - Copyright of Sensors & Actuators B: Chemical is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXYGEN detectors KW - PHOTODIODES KW - LIGHT filters KW - SIGNAL processing KW - SEMICONDUCTORS KW - ENERGY consumption KW - CMOS photodetectors KW - DNA–CTMA sensor KW - Filterless color detection KW - Oxygen sensor N1 - Accession Number: 84764111; Zhan, Zhiyong 1 Zhou, Bin 1 Fu, Zhenhong 2 Bright, Frank V. 3 Cartwright, Alexander N. 1 Bartsch, Carrie M. 4 Titus, Albert H. 1; Email Address: ahtitus@eng.buffalo.edu; Affiliation: 1: Department of Electrical Engineering, University at Buffalo, State University of New York, Buffalo, NY 14260, USA 2: OmniVision Technologies, Inc., Santa Clara, CA 95054, USA 3: Department of Chemistry and Materials Science and Engineering Program, University at Buffalo, State University of New York, Buffalo, NY 14260, USA 4: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH, USA; Source Info: Jan2013, Vol. 176, p729; Subject Term: OXYGEN detectors; Subject Term: PHOTODIODES; Subject Term: LIGHT filters; Subject Term: SIGNAL processing; Subject Term: SEMICONDUCTORS; Subject Term: ENERGY consumption; Author-Supplied Keyword: CMOS photodetectors; Author-Supplied Keyword: DNA–CTMA sensor; Author-Supplied Keyword: Filterless color detection; Author-Supplied Keyword: Oxygen sensor; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.snb.2012.07.046 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84764111&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tappin, S. AU - Altrock, R. T1 - The Extended Solar Cycle Tracked High into the Corona. JO - Solar Physics JF - Solar Physics Y1 - 2013/01// VL - 282 IS - 1 M3 - Article SP - 249 EP - 261 PB - Springer Science & Business Media B.V. SN - 00380938 AB - We present observations of the extended solar cycle activity in white-light coronagraphs, and compare them with the more familiar features seen in the Fe xiv green-line corona. We show that the coronal activity zones seen in the emission corona can be tracked high into the corona. The peak latitude of the activity, which occurs near solar maximum, is found to be very similar at all heights. But we find that the equatorward drift of the activity zones is faster at greater heights, and that during the declining phase of the solar cycle, the lower branch of activity (that associated with the current cycle) disappears at about 3 R. This implies that during the declining phase of the cycle, the solar wind detected near Earth is likely to be dominated by the next cycle. The so-called 'rush to the poles' is also seen in the higher corona. In the higher corona it is found to start at a similar time but at lower latitudes than in the green-line corona. The structure is found to be similar to that of the equatorward drift. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR cycle KW - SOLAR activity KW - SOLAR wind KW - COMPARATIVE studies KW - SOLAR radiation KW - SOLAR corona KW - SUN KW - Corona KW - Solar cycle N1 - Accession Number: 83594288; Tappin, S. 1; Email Address: jtappin@nso.edu Altrock, R. 2; Email Address: altrock@nso.edu; Affiliation: 1: National Solar Observatory, Sacramento Peak, Sunspot USA 2: Air Force Research Laboratory, Space Weather Center of Excellence, National Solar Observatory, Sacramento Peak, Sunspot USA; Source Info: Jan2013, Vol. 282 Issue 1, p249; Subject Term: SOLAR cycle; Subject Term: SOLAR activity; Subject Term: SOLAR wind; Subject Term: COMPARATIVE studies; Subject Term: SOLAR radiation; Subject Term: SOLAR corona; Subject Term: SUN; Author-Supplied Keyword: Corona; Author-Supplied Keyword: Solar cycle; Number of Pages: 13p; Document Type: Article L3 - 10.1007/s11207-012-0133-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83594288&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hocking, Hannah E. AU - Burggraf, Larry W. AU - Duan, Xiaofeng F. AU - Gardella, Joseph A. AU - Yatzor, Brett P. AU - Schuler, Wesley A. T1 - Composition of uranium oxide particles related to TOF-SIMS ion distributions. JO - Surface & Interface Analysis: SIA JF - Surface & Interface Analysis: SIA Y1 - 2013/01// VL - 45 IS - 1 M3 - Article SP - 545 EP - 548 SN - 01422421 AB - Uranium oxide particles tens of micrometers in size, including natural and depleted UO2, U3O8, and UO3 were analyzed using an IONTOF V time-of-flight secondary ion mass spectrometry (TOF-SIMS) V. Particulate samples were mounted on gold substrates made using a novel technique that reduced hydrocarbon contamination and volatile outgassing as well as provided an internal standard of Aux ion peaks to calibrate high masses. For UO2 surfaces, the dominant U3Ox and U4Oy cations were U3O6+ and U4O8+, whereas for both U3O8 and UO3 surfaces, they were U3O7+ and U4O9+. Secondary ion abundance ratios contained additional information about the chemical composition of the sample related to the relative stability of the cluster ions. Relative stabilities of the most stable cation isomers corresponding to masses observed in SIMS spectra were calculated using high-level density functional theory in order to compare ion stabilities to TOF-SIMS intensity distributions. Cation isomers having high oxygen content were doublets, and those having low oxygen content were quartet spin states. Depth profile trends for 'protonation' ratio and 'lattice valence', as defined by Plog, Wiedmann, and Benninghoven, were used to distinguish U3O8 from UO3. Cations containing a greater number of uranium atoms were also found to have a lower protonation ratio. UO2 and U3O8 surfaces show a steeper reduction in protonation ratio compared to UO3 surfaces which exhibit a nearly constant near-surface protonation ratio followed by a more gradual smaller decline with depth. We interpret secondary ion distribution results using density functional quantum mechanics calculations comparing the relative stability of cations and anions for different oxygen atom environments. Copyright © 2012 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR] AB - Copyright of Surface & Interface Analysis: SIA is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - density functional quantum mechanics KW - oxidation KW - oxygen dissociation energy KW - stability KW - TOF-SIMS KW - uranium oxide N1 - Accession Number: 84385721; Hocking, Hannah E. 1 Burggraf, Larry W. 1 Duan, Xiaofeng F. 2 Gardella, Joseph A. 3 Yatzor, Brett P. 3 Schuler, Wesley A. 4; Affiliation: 1: Air Force Institute of Technology 2: Air Force Research Laboratory, DoD Supercomputing Resource Center 3: Department of Chemistry, University at Buffalo SUNY 4: NASIC, 4180 Watson Way; Source Info: Jan2013, Vol. 45 Issue 1, p545; Author-Supplied Keyword: density functional quantum mechanics; Author-Supplied Keyword: oxidation; Author-Supplied Keyword: oxygen dissociation energy; Author-Supplied Keyword: stability; Author-Supplied Keyword: TOF-SIMS; Author-Supplied Keyword: uranium oxide; Number of Pages: 4p; Document Type: Article L3 - 10.1002/sia.5114 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84385721&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - LAWRENCE, DAVID T1 - David Abrams interviewed by David Lawrence. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2013/01// VL - 25 M3 - Interview SP - 1 EP - 10 PB - US Air Force Academy English Department SN - 10466967 AB - An interview with author David Abrams is presented. Abrams talks about his war novel "Fobbit". He comments on the fact that critics see similarities between his work and Heller's classic. He explains why war novels, like those emerging from operations in Iraq, take longer to publish compared to memoirs and journalistic accounts. KW - WAR in literature KW - CRITICISM KW - PUBLISHERS & publishing KW - ABRAMS, David -- Interviews KW - FOBBIT (Book) N1 - Accession Number: 94829670; LAWRENCE, DAVID 1; Affiliation: 1: United States Air Force Academy; Source Info: 2013, Vol. 25, p1; Subject Term: WAR in literature; Subject Term: CRITICISM; Subject Term: PUBLISHERS & publishing; Reviews & Products: FOBBIT (Book); NAICS/Industry Codes: 511190 Other publishers; NAICS/Industry Codes: 511199 All Other Publishers; NAICS/Industry Codes: 511130 Book Publishers; People: ABRAMS, David -- Interviews; Number of Pages: 11p; Document Type: Interview UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94829670&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - PLICHTA, KATHERINE T1 - Remembered and Reimagined: The Literature of War. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2013/01// VL - 25 M3 - Book Review SP - 1 EP - 13 PB - US Air Force Academy English Department SN - 10466967 KW - WAR in literature KW - NONFICTION KW - RIGGS, Thomas KW - LITERATURE of War, The (Book : Riggs) N1 - Accession Number: 94829687; PLICHTA, KATHERINE 1; Affiliation: 1: United States Air Force Academy, Colorado; Source Info: 2013, Vol. 25, p1; Subject Term: WAR in literature; Subject Term: NONFICTION; Reviews & Products: LITERATURE of War, The (Book : Riggs); People: RIGGS, Thomas; Number of Pages: 14p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94829687&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guenthner, Andrew J. AU - Davis, Matthew C. AU - Ford, Michael D. AU - Reams, Josiah T. AU - Groshens, Thomas J. AU - Baldwin, Lawrence C. AU - Lubin, Lisa M. AU - Mabry, Joseph M. T1 - Polycyanurate Networkswith Enhanced Segmental Flexibility and Outstanding ThermochemicalStability. JO - Macromolecules JF - Macromolecules Y1 - 2012/12/21/ VL - 45 IS - 24 M3 - Article SP - 9707 EP - 9718 SN - 00249297 AB - The synthesis and physical properties of cyanurate networksformed from two new tricyanate monomers, 1,3,5-tris[(4-cyanatophenylmethyl]benzeneand 3,5-bis[(4-cyanatophenylmethyl)]phenylcyanate, are reported andcompared to those of 1,1,1-tris[(4-cyanatophenyl)]ethane (alsoknown as ESR-255). All three networks possessed somewhat differentaromatic contents and cross-link densities; however, the thermochemicalstability of these networks, as determined by TGA, was outstanding,with that of 1,3,5-tris[(4-cyanatophenylmethyl)]benzene being amongthe best known for organic cyanate esters despite its comparativelyhigh segmental flexibility. Moreover, the moisture uptake of cured1,3,5-tris[(4-cyanatophenylmethyl)]benzene, at 2.2% after 96 h immersedin 85 °C water, was comparatively low for a cyanate ester networkwith a glass transition temperature of 320 °C at full cure. Whencured for 24 h at 210 °C, the dry glass transition temperaturesof the networks ranged from 245 to 285 °C, while the wet glasstransition temperatures ranged from 225 to 240 °C. The similarityin glass transition temperatures resulted from a lower extent of curein the networks with more rigid segments. In essence, for networkswith very high glass transition temperatures at full cure, the processconditions, rather than the rigidity of the network, determined theattainable glass transition temperature. Because networks with a higherextent of cure tend to exhibit slower long-term degradation, in thiscase, the networks with greater segment flexibility enabled superiorperformance despite exhibiting a lower glass transition temperatureat full cure. These results illustrate that, in contrast to the prevailingheuristics for improving the performance of high-temperature thermosettingpolymer networks, a more flexible network with a lower glass transitiontemperature at full cure can offer an optimal combination of thermomechanicaland thermochemical performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CYANURIC acid KW - SYNTHESIS (Chemistry) KW - THERMOCHEMISTRY KW - CHEMICAL stability KW - HIGH temperature chemistry KW - GLASS transition temperature N1 - Accession Number: 84462231; Guenthner, Andrew J. 1 Davis, Matthew C. 1 Ford, Michael D. 1 Reams, Josiah T. 1 Groshens, Thomas J. 1 Baldwin, Lawrence C. 1 Lubin, Lisa M. 1 Mabry, Joseph M. 1; Affiliation: 1: †Air Force Research Laboratory, Propulsion Directorate, Edwards AFB, California 93524, United States; Source Info: Dec2012, Vol. 45 Issue 24, p9707; Subject Term: CYANURIC acid; Subject Term: SYNTHESIS (Chemistry); Subject Term: THERMOCHEMISTRY; Subject Term: CHEMICAL stability; Subject Term: HIGH temperature chemistry; Subject Term: GLASS transition temperature; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84462231&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Medley, Colin AU - Smith, Joshua AU - Wigman, Larry AU - Chetwyn, Nik T1 - A DNA-conjugated magnetic nanoparticle assay for assessing genotoxicity. JO - Analytical & Bioanalytical Chemistry JF - Analytical & Bioanalytical Chemistry Y1 - 2012/12/20/ VL - 404 IS - 8 M3 - Article SP - 2233 EP - 2239 PB - Springer Science & Business Media B.V. SN - 16182642 AB - The genotoxicity of a molecule refers to its ability to interact with DNA in a way that inhibits normal DNA replication and transcription possibly leading to mutagenesis or carcinogenesis. Assessing the genotoxicity of a compound is critical in the development of pharmaceuticals and other products designed for human consumption or use. Typically genotoxicity is established using expensive and time consuming methods using animals or bacteria like the Ames test, mouse lymphoma assay, or mouse and rat carcinogenicity tests. We have developed a magnetic nanoparticle-based assay that uses conjugated double-stranded DNA to serve as a substrate for interaction with genotoxic molecules. After application of a magnetic field, the genotoxic molecules are extracted with the DNA-conjugated magnetic nanoparticles. The genotoxic molecules can then be released and detected. To evaluate the potential of this assay, we have screened several genotoxic and non-genotoxic compounds and have demonstrated the ability to extract a genotoxic compound in the presence of a non-genotoxic molecule. The assay demonstrates suitable analytical performance and the ability to differentiate between genotoxic and non-genotoxic molecules providing a rapid and inexpensive alternative to more traditional methods of evaluating genotoxicity. [ABSTRACT FROM AUTHOR] AB - Copyright of Analytical & Bioanalytical Chemistry is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES -- Research KW - GENETIC toxicology KW - RESEARCH KW - NANOTECHNOLOGY -- Research KW - DNA KW - PHARMACEUTICAL research KW - Nanoparticles KW - Nanotechnology KW - Nucleic acids (DNA | RNA) KW - Pharmaceuticals N1 - Accession Number: 82579779; Medley, Colin 1; Email Address: medley.colin@gene.com Smith, Joshua 2 Wigman, Larry 1 Chetwyn, Nik 1; Affiliation: 1: Genentech Inc., Small Molecule Pharmaceutical Sciences, 1 DNA Way South San Francisco 94080 USA 2: National Research Council Associate, Human Effectiveness Directorate, Air Force Research Laboratory, 711th Human Performance Wing Wright-Patterson Air Force Base 45433 USA; Source Info: Dec2012, Vol. 404 Issue 8, p2233; Subject Term: NANOPARTICLES -- Research; Subject Term: GENETIC toxicology; Subject Term: RESEARCH; Subject Term: NANOTECHNOLOGY -- Research; Subject Term: DNA; Subject Term: PHARMACEUTICAL research; Author-Supplied Keyword: Nanoparticles; Author-Supplied Keyword: Nanotechnology; Author-Supplied Keyword: Nucleic acids (DNA | RNA); Author-Supplied Keyword: Pharmaceuticals; NAICS/Industry Codes: 414510 Pharmaceuticals and pharmacy supplies merchant wholesalers; NAICS/Industry Codes: 424210 Drugs and Druggists' Sundries Merchant Wholesalers; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 7p; Document Type: Article L3 - 10.1007/s00216-012-6350-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82579779&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bhandari, Raj AU - Oda, Robert AU - Youso, Stephanie AU - Petrikovics, Ilona AU - Bebarta, Vikhyat AU - Rockwood, Gary AU - Logue, Brian T1 - Simultaneous determination of cyanide and thiocyanate in plasma by chemical ionization gas chromatography mass-spectrometry (CI-GC-MS). JO - Analytical & Bioanalytical Chemistry JF - Analytical & Bioanalytical Chemistry Y1 - 2012/12/20/ VL - 404 IS - 8 M3 - Article SP - 2287 EP - 2294 PB - Springer Science & Business Media B.V. SN - 16182642 AB - An analytical method utilizing chemical ionization gas chromatography-mass spectrometry was developed for the simultaneous determination of cyanide and thiocyanate in plasma. Sample preparation for this analysis required essentially one-step by combining the reaction of cyanide and thiocyanate with pentafluorobenzyl bromide and simultaneous extraction of the product into ethyl acetate facilitated by a phase-transfer catalyst, tetrabutylammonium sulfate. The limits of detection for cyanide and thiocyanate were 1 μM and 50 nM, respectively. The linear dynamic range was from 10 μM to 20 mM for cyanide and from 500 nM to 200 μM for thiocyanate with correlation coefficients higher than 0.999 for both cyanide and thiocyanate. The precision, as measured by %RSD, was below 9 %, and the accuracy was within 15 % of the nominal concentration for all quality control standards analyzed. The gross recoveries of cyanide and thiocyanate from plasma were over 90 %. Using this method, the toxicokinetic behavior of cyanide and thiocyanate in swine plasma was assessed following cyanide exposure. [ABSTRACT FROM AUTHOR] AB - Copyright of Analytical & Bioanalytical Chemistry is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CYANIDES KW - RESEARCH KW - THIOCYANATES KW - CHEMICAL ionization mass spectrometry KW - BROMIDES KW - ETHYL acetate KW - Chemical-ionization gas-chromatography mass-spectrometry KW - Cyanide KW - Method development KW - Thiocyanate N1 - Accession Number: 82579769; Bhandari, Raj 1 Oda, Robert 1 Youso, Stephanie 1 Petrikovics, Ilona 2 Bebarta, Vikhyat 3; Email Address: Vikhyat.bebarta@us.af.mil Rockwood, Gary 4 Logue, Brian 1; Email Address: brian.logue@sdstate.edu; Affiliation: 1: Department of Chemistry and Biochemistry, South Dakota State University, Avera Health and Science Center 131 Brookings 57007 USA 2: Department of Chemistry, Sam Houston State University, Huntsville 77341 USA 3: Medical Toxicology, San Antonio Military Medical Center, United States Air Force, San Antonio 78229 USA 4: Analytical Toxicology Division, US Army Medical Research Institute of Chemical Defense, 3100 Ricketts Point Road Aberdeen Proving Ground 21010-5400 USA; Source Info: Dec2012, Vol. 404 Issue 8, p2287; Subject Term: CYANIDES; Subject Term: RESEARCH; Subject Term: THIOCYANATES; Subject Term: CHEMICAL ionization mass spectrometry; Subject Term: BROMIDES; Subject Term: ETHYL acetate; Author-Supplied Keyword: Chemical-ionization gas-chromatography mass-spectrometry; Author-Supplied Keyword: Cyanide; Author-Supplied Keyword: Method development; Author-Supplied Keyword: Thiocyanate; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1007/s00216-012-6360-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82579769&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cowan, V. M. AU - Morath, C. P. AU - Hubbs, J. E. AU - Myers, S. AU - Plis, E. AU - Krishna, S. T1 - Radiation tolerance characterization of dual band InAs/GaSb type-II strain-layer superlattice pBp detectors using 63 MeV protons. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/12/17/ VL - 101 IS - 25 M3 - Article SP - 251108 PB - American Institute of Physics SN - 00036951 AB - The radiation tolerance characterization of dual band InAs/GaSb type-II strain-layer superlattice pBp detectors of varying size using 63 MeV proton irradiation is presented. The detectors' mid-wave infrared performance degraded with increasing proton fluence [uppercase_phi_synonym]P up to 3.75 × 1012 cm-2 or, equivalently, a total ionizing dose = 500 kRad (Si). At this [uppercase_phi_synonym]P, an ∼31% drop in quantum efficiency η, ∼2 order increase in dark current density JD, and consequently, >1 order drop in calculated detectivity D* were observed. Proton damage factors were determined for η and D*. Arrhenius-analysis of temperature-dependent JD measurements reflected significant changes in the activation energies following irradiation. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATION tolerance KW - IRRADIATION KW - PROTONS KW - INFRARED array detectors KW - PHOTOCURRENTS KW - DARK currents (Electric) N1 - Accession Number: 84461829; Cowan, V. M. 1 Morath, C. P. 1 Hubbs, J. E. 1 Myers, S. 2 Plis, E. 2 Krishna, S. 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Ave. SE, Kirtland AFB, New Mexico 87117, 2: Center for High Technology Materials, Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico 87106,; Source Info: 12/17/2012, Vol. 101 Issue 25, p251108; Subject Term: RADIATION tolerance; Subject Term: IRRADIATION; Subject Term: PROTONS; Subject Term: INFRARED array detectors; Subject Term: PHOTOCURRENTS; Subject Term: DARK currents (Electric); NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 4p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.4772543 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84461829&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stenger-Smith, John D. AU - Lai, William W. AU - Irvin, David J. AU - Yandek, Gregory R. AU - Irvin, Jennifer A. T1 - Electroactive polymer-based electrochemical capacitors using poly(benzimidazo-benzophenanthroline) and its pyridine derivative poly(4-aza-benzimidazo-benzophenanthroline) as cathode materials with ionic liquid electrolyte JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2012/12/15/ VL - 220 M3 - Article SP - 236 EP - 242 SN - 03787753 AB - Abstract: A novel processing technique was used to solution cast films of poly(benzimidazo benzophenanthroline), (BBL), and the novel ladder polymer poly(4-aza-benzimidazo benzophenanthroline) (Py-BBL), which were used as cathode materials in Type IV electroactive polymer-based electrochemical capacitors (EPECs). This new processing technique involves co-casting the polymer from solution with a room temperature ionic liquid, 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMIBTI). The new processing technique gave polymer films with superior transport properties and electrochemical stabilities, did not require a break-in period, and yielded higher charge capacity than the standard films. Co-cast films of BBL and Py-BBL were each incorporated into separate Type IV EPECs using poly(3,4-propylene dioxythiophene) (PProDOT) as the anode material. It was found that the PProDOT/BBL capacitors store, on average, about 50% more energy than a comparable PProDOT/Py-BBL EPEC. While PProDOT/BBL films have an energy density advantage at rates (power densities) less than 0.01 kW kg−1, PProDOT/Py-BBL EPECs are capable of delivering higher energy than the BBL EPECs at rates greater than 0.01 kW kg−1 (550 s per cycle). In fact, PProDOT/Py-BBL devices delivered more than ten times the energy density of PProDOT/BBL devices at 0.5 kW kg−1 (50 s per cycle). The PProDOT/Py-BBL EPECs were cycled for 10,000 cycles at 65% depth of discharge and maintained 96% of the initial energy and power density, whereas the PProDOT/BBL EPECs were cycled under the same conditions and lost more than 35% of the initial energy and power density after only 2300 cycles. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONDUCTING polymers KW - SUPERCAPACITORS KW - BENZIMIDAZOLES KW - PYRIDINE -- Derivatives KW - IONIC liquids KW - SOLUTION (Chemistry) KW - THIN films KW - Electrochemical capacitor KW - Energy density KW - Ionic liquid KW - Poly(4-aza-benzimidazo-benzophenanthroline) N1 - Accession Number: 80220754; Stenger-Smith, John D. 1,2; Email Address: drstengersmith@mchsi.com Lai, William W. 1,2 Irvin, David J. 3 Yandek, Gregory R. 4 Irvin, Jennifer A. 5; Affiliation: 1: Naval Air Warfare Center Weapons Division, Research and Intelligence Department, China Lake, CA 93555, USA 2: Chemistry Division, Research Department, NAWCWD, China Lake, CA 93555, USA 3: Systems and Materials Research Corporation, Austin, TX 78756, USA 4: Propulsion Materials Applications Branch Air Force Research Laboratory, Propulsion Directorate (AFRL-RZSM), Edwards AFB, CA 93524, USA 5: Texas State University, Department of Chemistry and Biochemistry, San Marcos, TX 78666, USA; Source Info: Dec2012, Vol. 220, p236; Subject Term: CONDUCTING polymers; Subject Term: SUPERCAPACITORS; Subject Term: BENZIMIDAZOLES; Subject Term: PYRIDINE -- Derivatives; Subject Term: IONIC liquids; Subject Term: SOLUTION (Chemistry); Subject Term: THIN films; Author-Supplied Keyword: Electrochemical capacitor; Author-Supplied Keyword: Energy density; Author-Supplied Keyword: Ionic liquid; Author-Supplied Keyword: Poly(4-aza-benzimidazo-benzophenanthroline); Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jpowsour.2012.07.068 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=80220754&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pendleton, S. J. AU - Montello, A. AU - Carter, C. AU - Lempert, W. AU - Gundersen, M. A. T1 - Vibrational and rotational CARS measurements of nitrogen in afterglow of streamer discharge in atmospheric pressure fuel/air mixtures. JO - Journal of Physics: D Applied Physics JF - Journal of Physics: D Applied Physics Y1 - 2012/12/12/ VL - 45 IS - 49 M3 - Article SP - 1 EP - 1 SN - 00223727 AB - The use of nonequilibrium plasma generated by nanosecond discharges to ignite fuel/air mixtures, known as transient plasma ignition (TPI), has been shown to effectively reduce ignition delay and improve engine performance relative to spark ignition for combustion engines. While this method is potentially useful for many engine applications, at present the underlying physics are poorly understood. This work uses coherent anti-Stokes Raman spectroscopy (CARS) to measure the rotational and vibrational excitation of nitrogen molecules in the discharge afterglow in a variety of fuel/air mixtures outside the limits of combustion in order to elucidate the thermal behaviour of TPI. The time evolution of relative populations of vibrationally excited states of nitrogen in the electronic ground state are reported for each gas mixture; it is shown that generation of these vibrationally excited states is inefficient during the discharge in air but that generation occurs at a high rate roughly 5 µs following the discharge; with the addition of fuels vibrationally excited states are observed during the discharge but an increase in population is still seen at 5 µs. Possible mechanisms for this behaviour are discussed. In addition, rotational temperature increases of at least 500 K are reported for all gas mixtures. The effect of this temperature increase on ignition, reaction rates, and thermal energy pathways are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: D Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NITROGEN KW - AFTERGLOW (Physics) KW - ATMOSPHERIC pressure KW - RAMAN spectroscopy KW - ELECTRIC discharges KW - NONEQUILIBRIUM plasmas N1 - Accession Number: 97862494; Pendleton, S. J. 1; Email Address: spendlet@usc.edu Montello, A. 2 Carter, C. 3 Lempert, W. 2 Gundersen, M. A. 1; Affiliation: 1: Pulsed Power Research Group, University of Southern California, Los Angeles, CA 90089, USA 2: Michael A. Chaszeyka Non-Equilibrium Thermodynamics Laboratory, The Ohio State University, Columbus, OH 43210, USA 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: 12/12/2012, Vol. 45 Issue 49, p1; Subject Term: NITROGEN; Subject Term: AFTERGLOW (Physics); Subject Term: ATMOSPHERIC pressure; Subject Term: RAMAN spectroscopy; Subject Term: ELECTRIC discharges; Subject Term: NONEQUILIBRIUM plasmas; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0022-3727/45/49/495401 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97862494&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varshney, Vikas AU - Roy, Ajit K. AU - Lee, Jonghoon AU - Dudis, Douglas S. AU - Farmer, Barry L. T1 - Helicity induced thermal conductivity reduction in superlattice nanowires. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/12/10/ VL - 1506 IS - 1 M3 - Article SP - 28 EP - 34 PB - American Institute of Physics SN - 0094243X AB - In this study, we have performed non-equilibrium molecular dynamics (NEMD) simulations to investigate thermal transport properties of 'model' bi-component helical nanowires. The results indicate that significant reduction in thermal conductivity, similar to that of flat superlattice nanostructures, can be achieved using a helical geometric configuration. The reduction is attributed to a plethora of transmissive and reflective phonon scattering events resulting from the steady alteration of phonon propagating direction that emerges from the continuous rotation of the helical interface. We also show that increasing the relative mass ratio of the two components lowers the phonon energy transmission at the interface (differences in vibrational frequency spectrum), thereby relatively 'easing' the phonon energy propagation along the helical pathway. While the proposed mechanisms result in a reduced lattice thermal conductivity, the continuous nature of the bi-component nanowire would not be expected to significantly reduce its electrical counterpart, as often occurs in superlattice/alloy nanostructures. Hence, we believe that the helical configuration of atomic arrangement should be a very attractive, general approach for improved thermoelectric material assemblies independent of the specific chemical composition. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLES (Nuclear physics) -- Helicity KW - THERMAL conductivity KW - SUPERLATTICES KW - NANOWIRES KW - MOLECULAR dynamics KW - PHONONS -- Scattering KW - ALLOYS N1 - Accession Number: 84122452; Varshney, Vikas 1 Roy, Ajit K. 2 Lee, Jonghoon 1 Dudis, Douglas S. 2 Farmer, Barry L. 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH-45433 and Universal Technology Corporation, Dayton, OH 45432, 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH-45433,; Source Info: Dec2012, Vol. 1506 Issue 1, p28; Subject Term: PARTICLES (Nuclear physics) -- Helicity; Subject Term: THERMAL conductivity; Subject Term: SUPERLATTICES; Subject Term: NANOWIRES; Subject Term: MOLECULAR dynamics; Subject Term: PHONONS -- Scattering; Subject Term: ALLOYS; Number of Pages: 7p; Illustrations: 2 Color Photographs, 4 Graphs; Document Type: Article L3 - 10.1063/1.4772520 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84122452&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Viggiano, A. A. T1 - Electron attachment to fluorocarbon radicals. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2012/12/07/ VL - 137 IS - 21 M3 - Article SP - 214318 PB - American Institute of Physics SN - 00219606 AB - Thermal electron attachment rate constants for a series of small fluorocarbon radicals (CF2, C2F3, 1-C3F7, 2-C3F7, C3F5, CF3O) were measured from 300 to 600 K using the variable electron and neutral density attachment mass spectrometry method. With the exception of CF2, for which no attachment was observed, all species exclusively underwent dissociative attachment to yield F-. The magnitude and temperature dependences of the rate constants varied significantly between species; however, attachment was in all cases inefficient, never exceeding 2% of the calculated collisional value. The data are interpreted and extrapolated to conditions inaccessible to the experiment using a kinetic modeling approach to the electron attachment process. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUOROCARBONS KW - RADICALS (Chemistry) KW - THERMAL electrons KW - NEUTRAL density filters KW - DISSOCIATION (Chemistry) KW - TEMPERATURE effect N1 - Accession Number: 84122441; Shuman, Nicholas S. 1 Miller, Thomas M. 1 Viggiano, A. A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117,; Source Info: 12/7/2012, Vol. 137 Issue 21, p214318; Subject Term: FLUOROCARBONS; Subject Term: RADICALS (Chemistry); Subject Term: THERMAL electrons; Subject Term: NEUTRAL density filters; Subject Term: DISSOCIATION (Chemistry); Subject Term: TEMPERATURE effect; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 7p; Illustrations: 2 Charts, 6 Graphs; Document Type: Article L3 - 10.1063/1.4768466 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84122441&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kelecy, Thomas AU - Jah, Moriba AU - DeMars, Kyle T1 - Application of a Multiple Hypothesis Filter to near GEO high area-to-mass ratio space objects state estimation JO - Acta Astronautica JF - Acta Astronautica Y1 - 2012/12/05/ VL - 81 IS - 2 M3 - Article SP - 435 EP - 444 SN - 00945765 AB - Abstract: Optical surveys have identified a class of high area-to-mass ratio (HAMR) objects in the vicinity of the Geostationary Earth Orbit (GEO) regime. The nature of these objects is not well known, though their proximity to the GEO belt implies origins from space objects (SOs) near GEO. These HAMR objects pose a collision hazard as they transit through the vicinity of active GEO satellites. Due to their high area-to-mass ratios (AMRs), ranging from 0.1 to 20m2/kg and higher, the effective solar radiation pressure perturbs their orbits significantly. Improvements in detection sensitivity will result in large numbers of uncorrelated tracks from surveys. A Multiple Hypothesis Filter (MHF) approach to the initial state estimation and track association provides a potentially automated and efficient approach to the processing of multiple un-correlated tracks. The availability of long-term optical angles data collected for a set of near GEO HAMR objects provides the means for testing candidate estimation processes such as the MHF. A baseline orbit determination (OD) process uses an Extended Kalman Filter/Smoother to manually estimate the 6 orbital elements and the effective area-to-mass ratio (AMR) which drives the solar radiation pressure perturbations on the orbital trajectories. In addition to allowing the characterization of the long-term behavior of the AMR, this process establishes a pseudo-truth trajectory to which the MHF analysis can be compared. An Unscented Kalman Filter (UKF) is applied in the MHF estimation process to estimate the 6 orbital elements and AMR, with no a priori state assumptions, and the results are compared to the pseudo-truth results for validation. The work to be presented summarizes the UKF/MHF process and assesses state estimation performance based on selected data for selected near GEO HAMR objects having a range of AMR value and variations. The prediction accuracy is also assessed by comparing predictions derived from filter updates to segments of the pseudo-truth trajectory determined from data not included in the updates. [Copyright &y& Elsevier] AB - Copyright of Acta Astronautica is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARAMETER estimation KW - SOLAR radiation KW - PREDICTION (Logic) KW - GEOSTATIONARY satellites KW - RADIATION pressure KW - KALMAN filtering KW - PERFORMANCE evaluation KW - Conjunction assessment KW - Estimation KW - Orbital debris N1 - Accession Number: 83191269; Kelecy, Thomas 1; Email Address: thomas.m.kelecy@boeing.com Jah, Moriba 2; Email Address: moriba.jah.1@us.af.mil DeMars, Kyle 3; Email Address: demars.kyle@gmail.com; Affiliation: 1: The Boeing Company, 5555 Tech Center Drive, Suite 400, Colorado Springs, CO 80919, USA 2: GN&C Group of AFRL/RV, Air Force Research Laboratory, 3550 Aberdeen Ave. SE, Kirtland AFB, NM 87117, USA 3: Air Force Research Laboratory, 3550 Aberdeen Ave. SE, Kirtland AFB, NM 87117, USA; Source Info: Dec2012, Vol. 81 Issue 2, p435; Subject Term: PARAMETER estimation; Subject Term: SOLAR radiation; Subject Term: PREDICTION (Logic); Subject Term: GEOSTATIONARY satellites; Subject Term: RADIATION pressure; Subject Term: KALMAN filtering; Subject Term: PERFORMANCE evaluation; Author-Supplied Keyword: Conjunction assessment; Author-Supplied Keyword: Estimation; Author-Supplied Keyword: Orbital debris; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.actaastro.2012.08.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83191269&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yates, J.M. AU - Spanbauer, B.W. AU - Black, J.T. T1 - Geostationary orbit development and evaluation for space situational awareness JO - Acta Astronautica JF - Acta Astronautica Y1 - 2012/12// VL - 81 IS - 1 M3 - Article SP - 256 EP - 272 SN - 00945765 AB - Abstract: Awareness of objects and events in and around the Geostationary Earth Orbit satellite belt is currently limited, and the situation is worsening as more satellites are added and the satellites trend toward smaller sizes. A potential solution is to deploy observation satellites near the geostationary altitude to improve monitoring and object characterization capabilities, but the vastness of the geostationary belt creates several unique challenges. Many of these challenges can potentially be mitigated by proper orbit and constellation designs. First, a methodology for evaluating such designs through a system simulation tool is described. Second, an analysis is performed including a variety of circular orbit, eccentric orbit, and maneuvering constellations of geostationary observer satellites. The analysis shows that non-circular orbit designs can result in improved performance for various range- and coverage-based inspection criteria. These tools are useful in mission planning and constellation design, and can be easily expanded to include additional constellation metrics or time history metrics on individual GEO objects such as illumination conditions. [Copyright &y& Elsevier] AB - Copyright of Acta Astronautica is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GEOSTATIONARY satellites KW - ORBITS KW - ASTRONOMICAL observations KW - ALTITUDES KW - SIMULATION methods & models KW - CONSTELLATIONS KW - GEO KW - Inspection orbits KW - Maneuvering orbits N1 - Accession Number: 79957816; Yates, J.M. 1; Email Address: jesse.yates.ctr@kirtland.af.mil Spanbauer, B.W. 2; Email Address: brian.spanbauer@kirtland.af.mil Black, J.T. 3; Email Address: jonathan.black@afit.edu; Affiliation: 1: Space and Directed Energy, Schafer Corporation, 2309 Renard Place SE, Albuquerque, NM 87106, United States 2: Space Vehicles Directorate, Air Force Research Laboratory, 3550 Aberdeen Avenue SE, Kirtland AFB, NM 87117, United States 3: Department of Aeronautics and Astronautics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433, United States; Source Info: Dec2012, Vol. 81 Issue 1, p256; Subject Term: GEOSTATIONARY satellites; Subject Term: ORBITS; Subject Term: ASTRONOMICAL observations; Subject Term: ALTITUDES; Subject Term: SIMULATION methods & models; Subject Term: CONSTELLATIONS; Author-Supplied Keyword: GEO; Author-Supplied Keyword: Inspection orbits; Author-Supplied Keyword: Maneuvering orbits; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.actaastro.2012.05.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79957816&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ortensie, R. Ray T1 - In a Time of War: The Proud and Perilous Journey of West Point's Class of 2002. JO - Air Power History JF - Air Power History Y1 - 2012///Winter2012 VL - 59 IS - 4 M3 - Book Review SP - 49 EP - 49 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "In a Time of War: The Proud and Perilous Journey of West Point's Class of 2002," by Bill Murphy Jr. KW - STUDENTS KW - NONFICTION KW - UNITED States Military Academy KW - MURPHY, Bill KW - IN a Time of War: The Proud & Perilous Journey of West Point's Class of 2002 (Book) N1 - Accession Number: 84452408; Ortensie, R. Ray 1; Affiliation: 1: Staff Curator, HQ Air Force Material Command; Source Info: Winter2012, Vol. 59 Issue 4, p49; Subject Term: STUDENTS; Subject Term: NONFICTION; Subject Term: UNITED States Military Academy; Reviews & Products: IN a Time of War: The Proud & Perilous Journey of West Point's Class of 2002 (Book); People: MURPHY, Bill; Number of Pages: 1/3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84452408&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Balasis, G. AU - Daglis, I. A. AU - Zesta, E. AU - Papadimitriou, C. AU - Georgiou, M. AU - Haagmans, R. AU - Tsinganos, K. T1 - ULF wave activity during the 2003 Halloween superstorm: multipoint observations from CHAMP, Cluster and Geotail missions. JO - Annales Geophysicae (09927689) JF - Annales Geophysicae (09927689) Y1 - 2012/12// VL - 30 IS - 12 M3 - Article SP - 1751 EP - 1768 SN - 09927689 AB - We examine data from a topside ionosphere and two magnetospheric missions (CHAMP, Cluster and Geotail) for signatures of ultra low frequency (ULF) waves during the exceptional 2003 Halloween geospace magnetic storm, when Dst reached ∼ -380 nT. We use a suite of wavelet-based algorithms, which are a subset of a tool that is being developed for the analysis of multi-instrument multi-satellite and ground-based observations to identify ULF waves and investigate their properties. Starting from the region of topside ionosphere, we first present three clear and strong signatures of Pc3 ULF wave activity (frequency 15-100 mHz) in CHAMP tracks. We then expand these three time intervals for purposes of comparison between CHAMP, Cluster and Geotail Pc3 observations but also to be able to search for Pc4-5 wave signatures (frequency 1-10 mHz) into Cluster and Geotail measurements in order to have a more complete picture of the ULF wave occurrence during the storm. Due to the fast motion through field lines in a low Earth orbit (LEO) we are able to reliably detect Pc3 (but not Pc4-5) waves from CHAMP. This is the first time, to our knowledge, that ULF wave observations from a topside ionosphere mission are compared to ULF wave observations from magnetospheric missions. Our study provides evidence for the occurrence of a number of prominent ULF wave events in the Pc3 and Pc4-5 bands during the storm and offers a platform to study the wave evolution from high altitudes to LEO. The ULF wave analysis methods presented here can be applied to observations from the upcoming Swarm multi-satellite mission of ESA, which is anticipated to enable joint studies with the Cluster mission. [ABSTRACT FROM AUTHOR] AB - Copyright of Annales Geophysicae (09927689) is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETOSPHERIC physics KW - PLASMA waves KW - MAGNETOSPHERIC substorms KW - MAGNETIC storms KW - ATMOSPHERIC waves KW - Magnetospheric physics Magnetospheric configuration and dynamics KW - Plasma waves and instabilities KW - Storms and substorms N1 - Accession Number: 84504719; Balasis, G. 1; Email Address: gbalasis@noa.gr Daglis, I. A. 1 Zesta, E. 2 Papadimitriou, C. 1,3 Georgiou, M. 1,3 Haagmans, R. 4 Tsinganos, K. 3; Affiliation: 1: Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing, National Observatory of Athens, Greece 2: RVBXP, Air Force Research Laboratory, Hanscom AFB, MA, USA 3: Section of Astrophysics, Astronomy and Mechanics, Department of Physics, University of Athens, Greece 4: European Space Research and Technology Centre, European Space Agency, Noordwijk, The Netherlands; Source Info: Dec2012, Vol. 30 Issue 12, p1751; Subject Term: MAGNETOSPHERIC physics; Subject Term: PLASMA waves; Subject Term: MAGNETOSPHERIC substorms; Subject Term: MAGNETIC storms; Subject Term: ATMOSPHERIC waves; Author-Supplied Keyword: Magnetospheric physics Magnetospheric configuration and dynamics; Author-Supplied Keyword: Plasma waves and instabilities; Author-Supplied Keyword: Storms and substorms; Number of Pages: 18p; Illustrations: 1 Diagram, 13 Graphs; Document Type: Article L3 - 10.5194/angeo-30-1751-2012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84504719&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhang, X. AU - Wang, W. AU - Zhao, Y. AU - Hu, X. AU - Reinhardt, K. AU - Knize, R. AU - Lu, Yalin T1 - Temperature-agile and structure-tunable optical properties of VO/Ag thin films. JO - Applied Physics A: Materials Science & Processing JF - Applied Physics A: Materials Science & Processing Y1 - 2012/12// VL - 109 IS - 4 M3 - Article SP - 845 EP - 849 PB - Springer Science & Business Media B.V. SN - 09478396 AB - By integrating together VO's unique near-room-temperature (RT) semiconductor-metal (S-M) phase transition with a thin silver (Ag) layer's plasmonic properties, VO/Ag multilayers could present a much enhanced optical transmission change when increasing the temperature from RT to over VO's S-M phase-transition temperature. Changing VO and Ag layer thicknesses can also significantly tune their transmission and absorption properties, which could lead to a few useful designs in optoelectronic and energy-saving industries. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics A: Materials Science & Processing is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Optical properties KW - TEMPERATURE effect KW - MOLECULAR structure KW - SILVER films (Metal coating) KW - MULTILAYERED thin films KW - SEMICONDUCTORS KW - PHASE transformations (Physics) N1 - Accession Number: 83587540; Zhang, X. 1 Wang, W. Zhao, Y. 2 Hu, X. 1 Reinhardt, K. 3 Knize, R. 4 Lu, Yalin; Email Address: yalin.lu@usafa.edu; Affiliation: 1: Advanced Applied Research Center, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Anhui 230026 P.R. China 2: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026 P.R. China 3: United States Air Force Office of Scientific Research, 875 North Randolph Street Arlington 22203 USA 4: Laser Optics Research Center, Physics Department, United States Air Force Academy, Colorado Springs 80840 USA; Source Info: Dec2012, Vol. 109 Issue 4, p845; Subject Term: METALS -- Optical properties; Subject Term: TEMPERATURE effect; Subject Term: MOLECULAR structure; Subject Term: SILVER films (Metal coating); Subject Term: MULTILAYERED thin films; Subject Term: SEMICONDUCTORS; Subject Term: PHASE transformations (Physics); NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1007/s00339-012-7351-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83587540&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - BLACKHURST, JACK L. AU - GRESHAM, JENNIFER S. AU - STONE, MORLEY O. T1 - The quantified warrior. JO - Armed Forces Journal JF - Armed Forces Journal Y1 - 2012/12// VL - 150 IS - 5 M3 - Article SP - 14 EP - 32 SN - 1559162X AB - The article discusses a sense-assess-augment framework which was developed to guide the application of the human performance augmentation into systems engineering across the defense services. It states that sensing is the most mature piece of the sense-assess-augment paradigm. The ability to interpret data from multiple individual sensors and merge it into actionable information is reportedly the most difficult of all the steps. KW - MILITARY readiness KW - DEFENSE industries KW - DETECTORS KW - MILITARY engineering KW - SYSTEMS engineering N1 - Accession Number: 84396524; BLACKHURST, JACK L. 1 GRESHAM, JENNIFER S. 2 STONE, MORLEY O. 3; Affiliation: 1: Director, Air Force Research Laboratory Human Effectiveness Directorate 2: Visiting research scholar, Florida Institute for Human and Machine Cognition 3: Chief scientist of the Human Performance Wing, Air Force Research Laboratory; Source Info: Dec2012, Vol. 150 Issue 5, p14; Subject Term: MILITARY readiness; Subject Term: DEFENSE industries; Subject Term: DETECTORS; Subject Term: MILITARY engineering; Subject Term: SYSTEMS engineering; NAICS/Industry Codes: 237990 Other Heavy and Civil Engineering Construction; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84396524&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Perlovsky, Leonid AU - Ilin, Roman T1 - Brain. Conscious and Unconscious Mechanisms of Cognition, Emotions, and Language. JO - Brain Sciences (2076-3425) JF - Brain Sciences (2076-3425) Y1 - 2012/12// VL - 2 IS - 4 M3 - Article SP - 790 EP - 834 SN - 20763425 AB - Conscious and unconscious brain mechanisms, including cognition, emotions and language are considered in this review. The fundamental mechanisms of cognition include interactions between bottom-up and top-down signals. The modeling of these interactions since the 1960s is briefly reviewed, analyzing the ubiquitous difficulty: incomputable combinatorial complexity (CC). Fundamental reasons for CC are related to the Gödel's difficulties of logic, a most fundamental mathematical result of the 20th century. Many scientists still "believed" in logic because, as the review discusses, logic is related to consciousness; non-logical processes in the brain are unconscious. CC difficulty is overcome in the brain by processes "from vague-unconscious to crisp-conscious" (representations, plans, models, concepts). These processes are modeled by dynamic logic, evolving from vague and unconscious representations toward crisp and conscious thoughts. We discuss experimental proofs and relate dynamic logic to simulators of the perceptual symbol system. "From vague to crisp" explains interactions between cognition and language. Language is mostly conscious, whereas cognition is only rarely so; this clarifies much about the mind that might seem mysterious. All of the above involve emotions of a special kind, aesthetic emotions related to knowledge and to cognitive dissonances. Cognition-language-emotional mechanisms operate throughout the hierarchy of the mind and create all higher mental abilities. The review discusses cognitive functions of the beautiful, sublime, music. [ABSTRACT FROM AUTHOR] AB - Copyright of Brain Sciences (2076-3425) is the property of MDPI Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BRAIN -- Research KW - COGNITION KW - EMOTIONS (Psychology) KW - LANGUAGE & languages KW - COGNITIVE dissonance KW - beautiful KW - bottom-up signals KW - cognition KW - cognitive dissonances KW - conscious KW - dual hierarchy KW - dynamic logic KW - emotions KW - grounded symbols KW - knowledge instinct KW - language KW - music KW - sublime KW - top-down signals KW - unconscious N1 - Accession Number: 84445088; Perlovsky, Leonid 1,2; Email Address: leonid@seas.harvard.edu Ilin, Roman 1,2; Email Address: roman.ilin@hanscom.af.mil; Affiliation: 1: Athinoula A. Martinos Center for Biomedical Imaging, Harvard University, Charlestown, MA 02129, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Dec2012, Vol. 2 Issue 4, p790; Subject Term: BRAIN -- Research; Subject Term: COGNITION; Subject Term: EMOTIONS (Psychology); Subject Term: LANGUAGE & languages; Subject Term: COGNITIVE dissonance; Author-Supplied Keyword: beautiful; Author-Supplied Keyword: bottom-up signals; Author-Supplied Keyword: cognition; Author-Supplied Keyword: cognitive dissonances; Author-Supplied Keyword: conscious; Author-Supplied Keyword: dual hierarchy; Author-Supplied Keyword: dynamic logic; Author-Supplied Keyword: emotions; Author-Supplied Keyword: grounded symbols; Author-Supplied Keyword: knowledge instinct; Author-Supplied Keyword: language; Author-Supplied Keyword: music; Author-Supplied Keyword: sublime; Author-Supplied Keyword: top-down signals; Author-Supplied Keyword: unconscious; Number of Pages: 45p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84445088&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - VANLANDINGHAM, RACHEL T1 - POLITICS OR LAW? THE DUAL NATURE OF THE RESPONSIBILITY TO PROTECT. JO - Denver Journal of International Law & Policy JF - Denver Journal of International Law & Policy Y1 - 2012///Fall/Winter2012 VL - 41 IS - 1 M3 - Article SP - 63 EP - 85 SN - 01962035 AB - The article discusses international law, which obligates countries to protect its citizens from the mass violation of human rights and also directs international community to respond in a condition where a states or nation fails to fulfill its sovereign protective responsibility. The article also expands on the transition of a political and moral commitment to a legal rule for the protection of human rights and discusses above issues in relation to the activities of United Nations. KW - HUMAN rights violations KW - INTERNATIONAL agencies KW - SOVEREIGNTY (Political science) KW - INTERNATIONAL ethics KW - WORLD politics KW - UNITED Nations N1 - Accession Number: 85640251; VANLANDINGHAM, RACHEL 1; Affiliation: 1: Visiting Assistant Professor, Stetson University College of Law and retired Judge Advocate, United States Air Force. LL.M.; Source Info: Fall/Winter2012, Vol. 41 Issue 1, p63; Subject Term: HUMAN rights violations; Subject Term: INTERNATIONAL agencies; Subject Term: SOVEREIGNTY (Political science); Subject Term: INTERNATIONAL ethics; Subject Term: WORLD politics; Company/Entity: UNITED Nations; NAICS/Industry Codes: 911410 Foreign affairs; NAICS/Industry Codes: 928120 International Affairs; NAICS/Industry Codes: 919110 International and other extra-territorial public administration; Number of Pages: 23p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85640251&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schaaf, Christian P AU - Boone, Philip M AU - Sampath, Srirangan AU - Williams, Charles AU - Bader, Patricia I AU - Mueller, Jennifer M AU - Shchelochkov, Oleg A AU - Brown, Chester W AU - Crawford, Heather P AU - Phalen, James A AU - Tartaglia, Nicole R AU - Evans, Patricia AU - Campbell, William M AU - Chun-Hui Tsai, Anne AU - Parsley, Lea AU - Grayson, Stephanie W AU - Scheuerle, Angela AU - Luzzi, Carol D AU - Thomas, Sandra K AU - Eng, Patricia A T1 - Phenotypic spectrum and genotype-phenotype correlations of NRXN1 exon deletions. JO - European Journal of Human Genetics JF - European Journal of Human Genetics Y1 - 2012/12// VL - 20 IS - 12 M3 - Article SP - 1240 EP - 1247 PB - Nature Publishing Group SN - 10184813 AB - Copy number variants (CNVs) and intragenic rearrangements of the NRXN1 (neurexin 1) gene are associated with a wide spectrum of developmental and neuropsychiatric disorders, including intellectual disability, speech delay, autism spectrum disorders (ASDs), hypotonia and schizophrenia. We performed a detailed clinical and molecular characterization of 24 patients who underwent clinical microarray analysis and had intragenic deletions of NRXN1. Seventeen of these deletions involved exons of NRXN1, whereas seven deleted intronic sequences only. The patients with exonic deletions manifested developmental delay/intellectual disability (93%), infantile hypotonia (59%) and ASDs (56%). Congenital malformations and dysmorphic features appeared infrequently and inconsistently among this population of patients with NRXN1 deletions. The more C-terminal deletions, including those affecting the β isoform of neurexin 1, manifested increased head size and a high frequency of seizure disorder (88%) when compared with N-terminal deletions of NRXN1. [ABSTRACT FROM AUTHOR] AB - Copyright of European Journal of Human Genetics is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHENOTYPE KW - EXONS (Genetics) KW - DELETION mutation KW - DEVELOPMENTAL disabilities KW - PATIENTS KW - NEUREXINS KW - HUMAN abnormalities KW - SPASMS N1 - Accession Number: 83380688; Schaaf, Christian P 1 Boone, Philip M 1 Sampath, Srirangan 1 Williams, Charles 2 Bader, Patricia I 3 Mueller, Jennifer M 2 Shchelochkov, Oleg A 4 Brown, Chester W 1 Crawford, Heather P 1 Phalen, James A 5 Tartaglia, Nicole R 6 Evans, Patricia 7 Campbell, William M 6 Chun-Hui Tsai, Anne 6 Parsley, Lea 6 Grayson, Stephanie W 8 Scheuerle, Angela 9 Luzzi, Carol D 10 Thomas, Sandra K 11 Eng, Patricia A 1; Affiliation: 1: Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA 2: Division of Genetics and Metabolism, Department of Pediatrics, University of Florida, Gainesville, FL, USA 3: Parkview Health Laboratories, Genetics Center, Fort Wayne, IN, USA 4: Division of Medical Genetics, Department of Pediatrics, University of Iowa Hospital and Clinics, Iowa City, IA, USA 5: United States Air Force, Developmental Pediatric Services, San Antonio Military Medical Center, Lackland AFB, TX, USA 6: Department of Pediatrics, University of Colorado, Denver School of Medicine, Aurora, CO, USA 7: Division of Pediatric Neurology, Department of Pediatrics, University of Texas Southwestern, Dallas, TX, USA 8: Kaiser Permanente, Lafayette, CO, USA 9: Tesserae Genetics, Dallas, TX, USA 10: Memorial Behavioral and Developmental Pediatrics, South Bend, IN, USA 11: Children's Health Center, Marble Falls, TX, USA; Source Info: Dec2012, Vol. 20 Issue 12, p1240; Subject Term: PHENOTYPE; Subject Term: EXONS (Genetics); Subject Term: DELETION mutation; Subject Term: DEVELOPMENTAL disabilities; Subject Term: PATIENTS; Subject Term: NEUREXINS; Subject Term: HUMAN abnormalities; Subject Term: SPASMS; Number of Pages: 8p; Illustrations: 1 Diagram, 3 Charts, 1 Graph; Document Type: Article L3 - 10.1038/ejhg.2012.95 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83380688&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heidler, Jeanne T. T1 - Outnumbered, Outgunned, Undeterred: Twenty Battles Against All Odds - By Rob Johnson. JO - Historian JF - Historian Y1 - 2012///Winter2012 VL - 74 IS - 4 M3 - Book Review SP - 907 EP - 909 PB - Wiley-Blackwell SN - 00182370 AB - The article reviews the book "Outnumbered, Outgunned, Undeterred: Twenty Battles Against All Odds," by Rob Johnson. KW - BATTLES -- History KW - NONFICTION KW - JOHNSON, Rob KW - OUTNUMBERED, Outgunned, Undeterred: 20 Battles Against All Odds (Book) N1 - Accession Number: 83927294; Heidler, Jeanne T. 1; Affiliation: 1: United States Air Force Academy; Source Info: Winter2012, Vol. 74 Issue 4, p907; Subject Term: BATTLES -- History; Subject Term: NONFICTION; Reviews & Products: OUTNUMBERED, Outgunned, Undeterred: 20 Battles Against All Odds (Book); People: JOHNSON, Rob; Number of Pages: 2p; Document Type: Book Review L3 - 10.1111/j.1540-6563.2012.00334_73.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83927294&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, Fei AU - Cao, Yongcan AU - Ren, Wei T1 - Distributed Average Tracking of Multiple Time-Varying Reference Signals With Bounded Derivatives. JO - IEEE Transactions on Automatic Control JF - IEEE Transactions on Automatic Control Y1 - 2012/12// VL - 57 IS - 12 M3 - Article SP - 3169 EP - 3174 SN - 00189286 AB - We present a distributed discontinuous control algorithm for a team of agents to track the average of multiple time-varying reference signals with bounded derivatives. We use tools from nonsmooth analysis to analyze the stability of the system. For time-invariant undirected connected network topologies, we prove that the states of all agents will converge to the average of the time-varying reference signals with bounded derivatives in finite time provided that the control gain is properly chosen. The validity of this result is also established for scenarios with switching undirected connected network topologies. For time-invariant directed network topologies with a directed spanning tree, we show that all agents will still reach a consensus in finite time, but the convergent value is generally not the average of the time-varying reference signals with bounded derivatives. Simulation examples are presented to show the validity of the above results. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Automatic Control is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIAGENT systems KW - HEURISTIC algorithms KW - INTELLIGENT agents (Computer software) KW - ELECTRIC network topology KW - NONSMOOTH optimization KW - NICKEL KW - Algorithm design and analysis KW - Distributed average tracking KW - Heuristic algorithms KW - multiagent system KW - Network topology KW - Nickel KW - nonsmooth system KW - Steady-state KW - Switches KW - switching topology KW - Topology N1 - Accession Number: 83709152; Chen, Fei 1 Cao, Yongcan 2 Ren, Wei 3; Affiliation: 1: Department of Automation, Xiamen University, Xiamen, Fujian, P. R. China 2: Control Science Center of Excellence, Air Force Research Laboratory, 3: Department of Electrical Engineering, University of Riverside, Riverside, CA, USA; Source Info: Dec2012, Vol. 57 Issue 12, p3169; Subject Term: MULTIAGENT systems; Subject Term: HEURISTIC algorithms; Subject Term: INTELLIGENT agents (Computer software); Subject Term: ELECTRIC network topology; Subject Term: NONSMOOTH optimization; Subject Term: NICKEL; Author-Supplied Keyword: Algorithm design and analysis; Author-Supplied Keyword: Distributed average tracking; Author-Supplied Keyword: Heuristic algorithms; Author-Supplied Keyword: multiagent system; Author-Supplied Keyword: Network topology; Author-Supplied Keyword: Nickel; Author-Supplied Keyword: nonsmooth system; Author-Supplied Keyword: Steady-state; Author-Supplied Keyword: Switches; Author-Supplied Keyword: switching topology; Author-Supplied Keyword: Topology; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TAC.2012.2199176 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83709152&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harris, T. Robert AU - Priyadarshi, Shivam AU - Melamed, Samson AU - Ortega, Carlos AU - Manohar, Rajit AU - Dooley, Steven R. AU - Kriplani, Nikhil M. AU - Davis, W. Rhett AU - Franzon, Paul D. AU - Steer, Michael B. T1 - A Transient Electrothermal Analysis of Three-Dimensional Integrated Circuits. JO - IEEE Transactions on Components, Packaging & Manufacturing Technology JF - IEEE Transactions on Components, Packaging & Manufacturing Technology Y1 - 2012/12// VL - 2 IS - 4 M3 - Article SP - 660 EP - 667 SN - 21563950 AB - A transient electrothermal simulation of a 3-D integrated circuit (3DIC) is reported that uses dynamic modeling of the thermal network and hierarchical electrothermal simulation. This is a practical alternative to full transistor electrothermal simulations that are computationally prohibitive. Simulations are compared to measurements for a token-generating asynchronous 3DIC clocking at a maximum frequency of 1 GHz. The electrical network is based on computationally efficient electrothermal macromodels of standard and custom cells. These are linked in a physically consistent manner with a detailed thermal network extracted from an OpenAccess layout file. Coupled with model-order reduction techniques, hierarchical dynamic electrothermal simulation of large 3DICs is shown to be tractable, yielding spatial and temporal selected transistor-level thermal profiles. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Components, Packaging & Manufacturing Technology is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTEGRATED circuits KW - MATHEMATICAL models KW - THERMAL management (Electronic packaging) KW - TRANSISTORS KW - COMPUTER simulation KW - ELECTRIC networks KW - HEATING KW - 3DIC KW - Analytical models KW - Computational modeling KW - electrothermal effects KW - Heating KW - Integrated circuit modeling KW - Thermal analysis KW - thermal management KW - Thermal resistance KW - Transient analysis N1 - Accession Number: 74090946; Harris, T. Robert 1 Priyadarshi, Shivam 1 Melamed, Samson 1 Ortega, Carlos 2 Manohar, Rajit 2 Dooley, Steven R. 3 Kriplani, Nikhil M. 1 Davis, W. Rhett 1 Franzon, Paul D. 1 Steer, Michael B. 1; Affiliation: 1: Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC, USA 2: Department of Electrical and Computer Engineering, Cornell University, Ithaca, NY, USA 3: Sensors Directorate Department, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Source Info: Dec2012, Vol. 2 Issue 4, p660; Subject Term: INTEGRATED circuits; Subject Term: MATHEMATICAL models; Subject Term: THERMAL management (Electronic packaging); Subject Term: TRANSISTORS; Subject Term: COMPUTER simulation; Subject Term: ELECTRIC networks; Subject Term: HEATING; Author-Supplied Keyword: 3DIC; Author-Supplied Keyword: Analytical models; Author-Supplied Keyword: Computational modeling; Author-Supplied Keyword: electrothermal effects; Author-Supplied Keyword: Heating; Author-Supplied Keyword: Integrated circuit modeling; Author-Supplied Keyword: Thermal analysis; Author-Supplied Keyword: thermal management; Author-Supplied Keyword: Thermal resistance; Author-Supplied Keyword: Transient analysis; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TCPMT.2011.2178414 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74090946&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schadler, Linda AU - Nelson, J. AU - Calebrese, Chris AU - Travelpiece, Alisha AU - Schweickart, Daniel T1 - High temperature breakdown strength and voltage endurance characterization of nanofilled polyamideimide. JO - IEEE Transactions on Dielectrics & Electrical Insulation JF - IEEE Transactions on Dielectrics & Electrical Insulation Y1 - 2012/12// VL - 19 IS - 6 M3 - Article SP - 2090 EP - 2101 SN - 10709878 AB - For high temperature wire enamel application, the dielectric properties of nanoscale silica and alumina filled polyamideimide were characterized as a function of filler loading, and temperature. It was found that although the dc breakdown strength improved for both composite systems, only the alumina also exhibited an increase in ac breakdown strength. In addition, the voltage endurance at elevated temperature in both a needle/plate and twisted wire geometry was improved over a narrow range of filler loading (5-7.5 wt%). At room temperature, pulsed electroacoustic analysis (PEA) data does not indicate any difference in space charge buildup in the composite for fields up to 25 kV/mm over a period of 2 h. This is in contrast to other nanocomposite systems, which tend to show mitigation of space charge buildup with the addition of nanoparticles. Dielectric spectroscopy shows that the addition of nanoparticles increases the real permittivity above that expected for volumetric mixing rules. This enhancement is associated with high effective permittivity interfacial areas. No systematic changes in losses in the frequency range between 10-4 and 105 Hz were seen. The results suggest that carrier scattering is the primary mechanism leading to the improved breakdown strength. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Dielectrics & Electrical Insulation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH temperatures KW - ELECTRIC discharges KW - ELECTRIC potential KW - IMIDES KW - DIELECTRICS KW - SILICA KW - ALUMINUM oxide KW - PERMITTIVITY KW - dielectric breakdown KW - Dielectric materials KW - Dispersion KW - Electric breakdown KW - Loading KW - Permittivity KW - Plastics KW - polyamideimide KW - Temperature KW - Testing KW - voltage endurance N1 - Accession Number: 84675259; Schadler, Linda 1 Nelson, J. 1 Calebrese, Chris 1 Travelpiece, Alisha 1 Schweickart, Daniel 2; Affiliation: 1: Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA 2: Air Force Research Laboratory, 1950 Fifth Street; MS: AFRL/RQPE, Wright Patterson AFB, OH 45433; Source Info: Dec2012, Vol. 19 Issue 6, p2090; Subject Term: HIGH temperatures; Subject Term: ELECTRIC discharges; Subject Term: ELECTRIC potential; Subject Term: IMIDES; Subject Term: DIELECTRICS; Subject Term: SILICA; Subject Term: ALUMINUM oxide; Subject Term: PERMITTIVITY; Author-Supplied Keyword: dielectric breakdown; Author-Supplied Keyword: Dielectric materials; Author-Supplied Keyword: Dispersion; Author-Supplied Keyword: Electric breakdown; Author-Supplied Keyword: Loading; Author-Supplied Keyword: Permittivity; Author-Supplied Keyword: Plastics; Author-Supplied Keyword: polyamideimide; Author-Supplied Keyword: Temperature; Author-Supplied Keyword: Testing; Author-Supplied Keyword: voltage endurance; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TDEI.2012.6396969 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84675259&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kambour, Kenneth AU - Rosen, Nadav AU - Kouhestani, Camron AU - Nguyen, Duc AU - Mayberry, Clay AU - Devine, Roderick A. B. AU - Kumar, A. AU - Chen, C.-C. AU - Li, Gang AU - Yang T1 - Modeling of the X-irradiation Response of the Carrier Relaxation Time in P3HT:PCBM Organic-Based Photocells. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2012/12//Dec2012 Part 1 VL - 59 IS - 6 M3 - Article SP - 2902 EP - 2908 SN - 00189499 AB - Initial experimental work has demonstrated that x-ray bombardment of organic-based photocells (specifically P3HT:PCBM-based) leads to a reduction in the open-circuit voltage (Voc) without apparent change in the carrier relaxation time. The variation of Voc was suggested to be due to the injection and trapping of holes near the anode, which resulted in a decrease in the built-in potential. We have extended the experimental measurements to higher total dose (\sim 1300~\ krad(\ SiO2)). Using standard inorganic modeling tools, a device model of the organic cell has been developed and predictions made. These predictions have been compared to the results of the previous and new experimental measurements and they demonstrate reasonable agreement between the two, thereby supporting the initial charge buildup hypothesis. Questions about the origin and behavior of the photo-carrier relaxation arise. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOCONDUCTIVE cells KW - ANODES KW - IRRADIATION KW - SOLAR cells KW - X-rays KW - Photovoltaic cells KW - Simulation KW - solar cells KW - x-rays N1 - Accession Number: 84360314; Kambour, Kenneth 1 Rosen, Nadav 2 Kouhestani, Camron 3 Nguyen, Duc 3 Mayberry, Clay 2 Devine, Roderick A. B. 4 Kumar, A. 5 Chen, C.-C. 5 Li, Gang 5 Yang 5; Affiliation: 1: SAIC, Kirtland AFB, New Mexico, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico, USA 3: COSMIAC, Kirtland AFB, New Mexico, USA 4: Think Strategically, Kirtland AFB, New Mexico, USA 5: UCLA,; Source Info: Dec2012 Part 1, Vol. 59 Issue 6, p2902; Subject Term: PHOTOCONDUCTIVE cells; Subject Term: ANODES; Subject Term: IRRADIATION; Subject Term: SOLAR cells; Subject Term: X-rays; Author-Supplied Keyword: Photovoltaic cells; Author-Supplied Keyword: Simulation; Author-Supplied Keyword: solar cells; Author-Supplied Keyword: x-rays; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TNS.2012.2222666 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84360314&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Weaver, B. D. AU - Martin, P. A. AU - Boos, J. B. AU - Cress, C. D. T1 - Displacement Damage Effects in AlGaN/GaN High Electron Mobility Transistors. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2012/12//Dec2012 Part 1 VL - 59 IS - 6 M3 - Article SP - 3077 EP - 3080 SN - 00189499 AB - We present the results of a radiation damage experiment on Alx\rm Ga1-{\rm x}{\rm N/GaN} high electron mobility transistors. The basic mechanism underlying the observed high radiation tolerance appears to be a strong internal piezoelectric field near the two-dimensional electron gas that causes scattered carriers to be reinjected. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATION injuries KW - HIGH electron mobility transistors KW - PIEZOELECTRICITY KW - ELECTRON gas KW - GALLIUM nitride KW - IRRADIATION KW - Displacement damage KW - gallium nitride KW - HEMTs KW - high electron mobility transistors KW - proton irradiation KW - Proton radiation effects N1 - Accession Number: 84360329; Weaver, B. D. 1 Martin, P. A. 2 Boos, J. B. 1 Cress, C. D. 1; Affiliation: 1: Naval Research Laboratory (NRL), Washington, DC, USA 2: Air Force Research Laboratory, Kirtland Air Force Base,; Source Info: Dec2012 Part 1, Vol. 59 Issue 6, p3077; Subject Term: RADIATION injuries; Subject Term: HIGH electron mobility transistors; Subject Term: PIEZOELECTRICITY; Subject Term: ELECTRON gas; Subject Term: GALLIUM nitride; Subject Term: IRRADIATION; Author-Supplied Keyword: Displacement damage; Author-Supplied Keyword: gallium nitride; Author-Supplied Keyword: HEMTs; Author-Supplied Keyword: high electron mobility transistors; Author-Supplied Keyword: proton irradiation; Author-Supplied Keyword: Proton radiation effects; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TNS.2012.2224371 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84360329&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hammack, Stephen AU - Lee, Tonghun AU - Carter, Campbell T1 - Microwave Plasma Enhancement of Various Flame Geometries at Atmospheric Pressure. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2012/12//Dec2012 Part 1 VL - 40 IS - 12 M3 - Article SP - 3139 EP - 3146 SN - 00933813 AB - A plasma-coupled methane–air flame is produced at atmospheric pressure by a microwave plasma source utilizing a tunable waveguide. Laser diagnostics are used to examine the direct-coupled, plasma-ignited, and sustained flame, for multiple flame types and nozzle geometries. OH radical number densities are quantified using planar laser-induced fluorescence and temperature measured by Rayleigh scattering thermometry. Premixed and nonpremixed flames are studied using both solid and hollow inner conductors in the plasma-applicating nozzle. The plasma source is powered by a continuous 2.45-GHz magnetron producing 360 W of power. Plasma power is controlled by adjusting the reflected microwave power, measured at a dummy load attached to a circulator. Maximum OH radical number densities were quantified as approximately (3 - 5) \times 10^16\ \cm^-3 for plasma powers around 100 W, with small variation between configurations. The maximum temperatures occurred in the nonpremixed flame, where the plasma is generated in air, reaching values of 3500 K. Temperatures are lower, peaking at 2000 K, when the plasma is generated at the air–fuel boundary or the air-premixed boundary through use of the hollow inner conductor. Additional parameters are adjusted, including flow rates, power level, and equivalence ratio, and the effects are discussed. Nonpremixed configurations are ill suited for flame enhancement, whereas a premixed flow through the hollow electrode best demonstrates nonthermal plasma-assisted combustion. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVE plasmas KW - WAVEGUIDES KW - RAYLEIGH scattering KW - NOZZLES KW - MAGNETRONS KW - ELECTRODES KW - Discharges KW - Electrodes KW - Electromagnetic heating KW - Fuels KW - Microwave imaging KW - Microwave waveguide KW - planar laser-induced fluorescence KW - Plasma temperature KW - plasma-assisted combustion KW - Rayleigh scattering thermometry N1 - Accession Number: 84188844; Hammack, Stephen 1 Lee, Tonghun 2 Carter, Campbell 3; Affiliation: 1: Department of Mechanical Engineering, Michigan State University, East Lansing, MI, USA 2: Department of Mechanical Engineering, Michigan State University, East Lansing , MI, USA 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base , Dayton, OH, USA; Source Info: Dec2012 Part 1, Vol. 40 Issue 12, p3139; Subject Term: MICROWAVE plasmas; Subject Term: WAVEGUIDES; Subject Term: RAYLEIGH scattering; Subject Term: NOZZLES; Subject Term: MAGNETRONS; Subject Term: ELECTRODES; Author-Supplied Keyword: Discharges; Author-Supplied Keyword: Electrodes; Author-Supplied Keyword: Electromagnetic heating; Author-Supplied Keyword: Fuels; Author-Supplied Keyword: Microwave imaging; Author-Supplied Keyword: Microwave waveguide; Author-Supplied Keyword: planar laser-induced fluorescence; Author-Supplied Keyword: Plasma temperature; Author-Supplied Keyword: plasma-assisted combustion; Author-Supplied Keyword: Rayleigh scattering thermometry; NAICS/Industry Codes: 326199 All Other Plastics Product Manufacturing; NAICS/Industry Codes: 326198 All other plastic product manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TPS.2012.2195034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84188844&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lu, Mengqian AU - Krishna Juluri, Bala AU - Zhao, Yanhui AU - Jun Liu, Yan AU - Bunning, Timothy J. AU - Jun Huang, Tony T1 - Single-step holographic fabrication of large-area periodically corrugated metal films. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/12// VL - 112 IS - 11 M3 - Article SP - 113101 PB - American Institute of Physics SN - 00218979 AB - We have developed a simple, high-throughput, and cost-effective method to fabricate one-dimensional and two-dimensional periodically corrugated silver films over centimeter scale areas. This fabrication uses a single-step holographic patterning technique with laser intensities as low as 88.8 mW/cm2 to deposit silver nanoparticles directly from solution to create gratings with periodicities of 570 nm. A dip in the transmission spectrum for these samples is observed due to certain visible wavelengths coupling to surface plasmon polaritons (SPPs) and the peak wavelength of this dip has a linear relationship with the surrounding material's refractive index (RI) with a sensitivity of 553.4 nm/RIU. The figure of merit (the ratio of refractive index sensitivity to the full width at half maximum (FWHM)) is typically in the range of 12-23. Our technique enables single-step fabrication of uniform, sub-wavelength periodic metal structures over a large area with low cost. Such sub-wavelength periodic metal structures are promising candidates as disposable sensors in applications such as affordable environmental monitoring systems and point-of-care diagnostics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILVER films (Metal coating) KW - METALLIC films KW - NANOPARTICLES KW - SURFACE plasmon resonance KW - REFRACTIVE index N1 - Accession Number: 84341980; Lu, Mengqian 1 Krishna Juluri, Bala 1 Zhao, Yanhui 1 Jun Liu, Yan 2 Bunning, Timothy J. 3 Jun Huang, Tony 1; Affiliation: 1: Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, Pennsylvania 16802, 2: Institute of Materials Research and Engineering, 3 Research Link, Singapore 117602, 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433,; Source Info: Dec2012, Vol. 112 Issue 11, p113101; Subject Term: SILVER films (Metal coating); Subject Term: METALLIC films; Subject Term: NANOPARTICLES; Subject Term: SURFACE plasmon resonance; Subject Term: REFRACTIVE index; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.4768201 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84341980&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, Cheryl Y. AU - Delay, Susan H. AU - Roddy, Patrick A. AU - Sutton, Eric K. AU - Stoneback, R. T1 - Longitudinal structures in the equatorial ionosphere during deep solar minimum JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2012/12// VL - 90-91 M3 - Article SP - 156 EP - 163 SN - 13646826 AB - Abstract: The plasma densities detected by the Planar Langmuir Probe (PLP) on board the Communication/Navigation Outage Forecasting System (C/NOFS) satellite have been analyzed in detail from launch in April 2008 through December 2009 period. The initial period just after launch which corresponds to one of the quietest periods in the space era, exhibited broad plasma decreases (BPDs) which we have reported previously. In order to treat the data quantitatively, we have detrended the PLP data by using the International Reference Ionosphere (IRI) model to remove variations in density due to changes in spacecraft altitude and latitude along the orbit. In this paper we present results of a statistical analysis of C/NOFS detrended plasma densities as well as neutral densities from the Gravity Recovery and Climate Experiment (GRACE) measured during the same period. The results show periodic structures in both charged and neutral species, most evident in limited local times. These structures resemble wave-4 nonmigrating tides. BPDs persist in the detrended data and appear as one of the minima in the longitudinal signatures, most strikingly on the nightside. Statistical averages of meridional velocities from the Ion Velocity Meter (IVM), also on C/NOFS, during the same period shows that the locations of BPDs coincide with measurements of large downward-directed velocities. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WEATHER forecasting KW - NATURAL satellites -- Atmospheres KW - PLASMA density KW - IONOSPHERE KW - SOLAR activity KW - ATMOSPHERIC models KW - CLIMATIC changes KW - LANGMUIR probes KW - Broad plasma decreases KW - Equatorial ionosphere KW - Irregularities KW - Thermosphere KW - Tides N1 - Accession Number: 83324485; Huang, Cheryl Y. 1; Email Address: cheryl.huang@us.af.mil Delay, Susan H. 2 Roddy, Patrick A. 1 Sutton, Eric K. 1 Stoneback, R. 3; Affiliation: 1: Air Force Research Laboratory Space Vehicles Directorate, 3550 Aberdeen Avenue SE, Bldg 570, Kirtland AFB, NM 87117, United States 2: Institute for Scientific Research, 400 St Clement's Hall, Boston College, 140 Commonwealth Avenue, Chestnut Hill, MA 02467, United States 3: William B. Hanson Center for Space Sciences, University of Texas at Dallas, P.O. Box 830688WT15, Richardson, TX 75083-0688, United States; Source Info: Dec2012, Vol. 90-91, p156; Subject Term: WEATHER forecasting; Subject Term: NATURAL satellites -- Atmospheres; Subject Term: PLASMA density; Subject Term: IONOSPHERE; Subject Term: SOLAR activity; Subject Term: ATMOSPHERIC models; Subject Term: CLIMATIC changes; Subject Term: LANGMUIR probes; Author-Supplied Keyword: Broad plasma decreases; Author-Supplied Keyword: Equatorial ionosphere; Author-Supplied Keyword: Irregularities; Author-Supplied Keyword: Thermosphere; Author-Supplied Keyword: Tides; NAICS/Industry Codes: 541990 All Other Professional, Scientific, and Technical Services; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jastp.2012.04.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83324485&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Natarajan, Lalgudi V. AU - Cazzell, Seth A. AU - Tondiglia, Vincent P. AU - Bunning, Timothy J. AU - White, Timothy J. T1 - The role of crosslinking and polarity in the dark relaxation of azobenzene-based, polymer-stabilised cholesteric liquid crystals. JO - Liquid Crystals JF - Liquid Crystals Y1 - 2012/12// VL - 39 IS - 12 M3 - Article SP - 1450 EP - 1457 SN - 02678292 AB - Prior examinations have reported that polymer stabilisation of azobenzene-based cholesteric liquid crystal (CLC) mixtures can reduce the time necessary for complete colour restoration in the dark from three days to as few as five minutes. This work extends upon these prior examinations by exploring and elucidating the role of crosslinker concentration and monomer polarity on the colour restoration of a representative CLC mixture composed of a high HTP bis(azo) binapthanyl chiral dopant (QL76) mixed into the cyanobiphenyl nematic liquid crystal host MDA-00-1444. The impact of these variables was unexpectedly convoluted. In all the formulations examined here, polymer stabilisation dramatically reduces the time for complete colour restoration of the starting reflection notch. In mixtures based on nonpolar liquid crystal monomers, increasing the crosslinker concentration reduces the time necessary for complete colour restoration. However, the dependence on crosslinker concentration reverses in mixtures composed from polar liquid crystal monomers in which increasing the crosslinker concentration serves to increase the time necessary for complete colour restoration. [ABSTRACT FROM AUTHOR] AB - Copyright of Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CROSSLINKING (Polymerization) KW - LIQUID crystals KW - DIELECTRIC relaxation KW - AZOBENZENE KW - POLYMERS KW - MIXTURES KW - DOPING agents (Chemistry) KW - PHOTOCHEMISTRY KW - azobenzene KW - chiral nematic KW - cholesteric liquid crystal KW - photochemistry N1 - Accession Number: 82575574; Natarajan, Lalgudi V. 1,2 Cazzell, Seth A. 1 Tondiglia, Vincent P. 1,2 Bunning, Timothy J. 1 White, Timothy J. 1; Email Address: timothy.white2@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Ohio, USA 2: Science Applications International Corporation, Dayton, Ohio, USA; Source Info: Dec2012, Vol. 39 Issue 12, p1450; Subject Term: CROSSLINKING (Polymerization); Subject Term: LIQUID crystals; Subject Term: DIELECTRIC relaxation; Subject Term: AZOBENZENE; Subject Term: POLYMERS; Subject Term: MIXTURES; Subject Term: DOPING agents (Chemistry); Subject Term: PHOTOCHEMISTRY; Author-Supplied Keyword: azobenzene; Author-Supplied Keyword: chiral nematic; Author-Supplied Keyword: cholesteric liquid crystal; Author-Supplied Keyword: photochemistry; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 8p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1080/02678292.2012.720290 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82575574&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, David H. AU - Lee, Kyung Min AU - Koerner, Hilmar AU - Yu, Zhenning AU - Vaia, Richard A. AU - White, Timothy J. AU - Tan, Loon-Seng T1 - Flexural-Torsional Photomechanical Responses in Azobenzene-Containing Crosslinked Polyimides. JO - Macromolecular Materials & Engineering JF - Macromolecular Materials & Engineering Y1 - 2012/12// VL - 297 IS - 12 M3 - Article SP - 1167 EP - 1174 SN - 14387492 AB - The influence of a variety of factors on the photomechanical output of azo-CP2- xx systems is studied, primarily focusing on a sample with a higher crosslink density (30 mol%) and two new, structurally related crosslinked polyimides with modified backbone flexibility/rigidity. This work elucidates the strong coupling between geometrical considerations (reciprocal aspect ratio of cantilever) and the visualized mechanical response (e.g., flexural-torsional response of a cantilever). [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecular Materials & Engineering is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - azobenzene KW - flexural-torsional response KW - photo-isomerization KW - polyimides KW - reciprocal aspect ratio N1 - Accession Number: 83836789; Wang, David H. 1,2 Lee, Kyung Min 1,3 Koerner, Hilmar 1,2 Yu, Zhenning 4 Vaia, Richard A. 1 White, Timothy J. 1 Tan, Loon-Seng 1; Affiliation: 1: Materials and Manufacturing Directorate (RX), Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7750, USA 2: UES, Inc. Dayton, OH, USA 3: Azimuth Corp. Dayton, OH, USA 4: Department of Chemistry, Wright State University, Dayton, OH, USA; Source Info: Dec2012, Vol. 297 Issue 12, p1167; Author-Supplied Keyword: azobenzene; Author-Supplied Keyword: flexural-torsional response; Author-Supplied Keyword: photo-isomerization; Author-Supplied Keyword: polyimides; Author-Supplied Keyword: reciprocal aspect ratio; Number of Pages: 8p; Document Type: Article L3 - 10.1002/mame.201200240 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83836789&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - PAWLICKA, A. AU - GROTE, J. G. AU - KAJZAR, F. AU - SILVA, M. M. AU - RAU, I. T1 - Agar and DNA Bio-Membranes for Electrochromic Devices Applications. JO - Nonlinear Optics, Quantum Optics: Concepts in Modern Optics JF - Nonlinear Optics, Quantum Optics: Concepts in Modern Optics Y1 - 2012/12// VL - 45 IS - 1/2 M3 - Article SP - 113 EP - 129 SN - 15430537 AB - Development of new materials that can be applied as solid electrolytes has led to the creation of modem systems of energy generation and storage. Among these materials, polymer electrolytes (PEs), generally elastomeric materials containing ions, represent a promising alternative for the substitution of liquid electrolytes and inorganic crystals used in batteries, sensors and electrochromic devices. Among different poly(ethylene oxide) based PEs, natural polymer based systems are also proposed. These ionic conducting materials can be obtained from polysaccharides, such as cellulose derivatives, i.e., hydroxyethylcellulose (HEC), hydroxypropylcellulose (HPC) or carboxymethylcellulose (CMC), starch, starch derivatives and chitosan, proteins like gelatin or more recently DNA. These systems can be modified by grafting, crosslinking or plasticization processes. After salt or acid addition, the samples in the transparent film form exhibit ionic conductivity values, which reach 10-4 S/cm at room temperature and can be applied to electrochromic devices. The paper review the main results of preparation and ionic conductivity characterization of polymer electrolytes based on agar, DNA and gelatin with emphasis on electrochromic devices application. [ABSTRACT FROM AUTHOR] AB - Copyright of Nonlinear Optics, Quantum Optics: Concepts in Modern Optics is the property of Old City Publishing, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AGAR KW - DNA KW - BIOLOGICAL membranes KW - ELECTROCHROMIC devices KW - SUPERIONIC conductors KW - ENERGY storage KW - POLYELECTROLYTES KW - GELATIN KW - agar KW - electrochromic cell window KW - gel electrolyte KW - gelatin KW - membranes N1 - Accession Number: 84853184; PAWLICKA, A. 1; Email Address: agnieszka@iqsc.usp.br GROTE, J. G. 2 KAJZAR, F. 3,4 SILVA, M. M. 5 RAU, I. 6; Affiliation: 1: IQSC, Universidade de São Paulo, C.P. 780, CEP 13560-970, São Carlos-SP, Brazil 2: Air Force Research Laboratory, AFRL/RXPS, 3005 Hobson Way Wright-Patterson Air Force Base, Ohio 45433-7707 3: Université d'Angers, Institut des Sciences et Technologies Moléculaires d'Angers, MOLTECH Anjou - UMR CNRS 6200 4: Equipe Interaction Moléculaire Optique non Linéaire et Structuration MINOS 2, Bd Lavoisier; 49045 Angers cedex, France 5: Centro de Química, Universidade do Minho, Gualtar, 4710-057 Braga, Portugal 6: Faculty of Applied Chemistry and Materials Science, University Politehnica Bucharest, Bucharest, Romania; Source Info: 2012, Vol. 45 Issue 1/2, p113; Subject Term: AGAR; Subject Term: DNA; Subject Term: BIOLOGICAL membranes; Subject Term: ELECTROCHROMIC devices; Subject Term: SUPERIONIC conductors; Subject Term: ENERGY storage; Subject Term: POLYELECTROLYTES; Subject Term: GELATIN; Author-Supplied Keyword: agar; Author-Supplied Keyword: electrochromic cell window; Author-Supplied Keyword: gel electrolyte; Author-Supplied Keyword: gelatin; Author-Supplied Keyword: membranes; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; NAICS/Industry Codes: 325411 Medicinal and Botanical Manufacturing; NAICS/Industry Codes: 311990 All other food manufacturing; NAICS/Industry Codes: 311999 All Other Miscellaneous Food Manufacturing; Number of Pages: 17p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84853184&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Palm, William J. AU - Marciniak, Michael A. AU - Perram, Glen P. AU - Gross, Kevin C. AU - Bailey, William F. AU - Walters, Craig T. T1 - Wavelength and temperature dependence of continuous-wave laser absorptance in Kapton® thin films. JO - Optical Engineering JF - Optical Engineering Y1 - 2012/12// VL - 51 IS - 12 M3 - Article SP - 1 EP - 8 SN - 00913286 AB - Optical properties and laser damage characteristics of thin-film aluminized Kapton® were investigated. Spectral absorptance of virgin and irradiated samples was measured from the Kapton side of multilayered insulation over 0.2 to 15 µm wavelengths at both room temperature and 150°C. The laser-damage parameters of penetration time and maximum temperature were then measured in a vacuum environment at laser wavelengths of 1.07 and 10.6 µm. Differences in damage behavior at these two wavelengths were observed due to differences in starting absorption properties at these wavelengths. During laser irradiation, the Kapton thin film was observed with a calibrated FLIR® thermal imager in the 8 to 9.2 µm band to determine its temperature evolution. Spectral radiance throughout the mid- and long-wave infrared was also observed with a Fourier transform spectrometer, allowing temperature-dependent spectral emittance to be determined. Kapton emittance increased after the material heated past approximately 500°C, and continued to increase as it cooled posttest. This evolving temperature-dependent spectral emittance successfully predicts the increasing absorptance that led to shortened penetration times and increased heating rates for the 1.07 µm laser. For tests with constant absorptance and no material breakdown, a simplified one-dimensional thermal conduction and radiation model successfully predicts the temporally evolving temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films -- Research KW - LASER damage KW - RESEARCH KW - KAPTON (Trademark) KW - CONTINUOUS wave lasers KW - LIGHT absorption KW - Kapton® KW - laser heating KW - polyimide KW - spectral emittance N1 - Accession Number: 98630680; Palm, William J. 1 Marciniak, Michael A. 2; Email Address: michael.marciniak@afit.edu Perram, Glen P. 2 Gross, Kevin C. 2 Bailey, William F. 2 Walters, Craig T. 3; Affiliation: 1: Air Force Research Laboratory, Kirtland AFB, New Mexico 87117 2: Air Force Institute of Technology, Department of Engineering Physics, Wright-Patterson AFB, Ohio 45433-7765 3: Craig Walters Associates, Powell, Ohio 43065; Source Info: Dec2012, Vol. 51 Issue 12, p1; Subject Term: THIN films -- Research; Subject Term: LASER damage; Subject Term: RESEARCH; Subject Term: KAPTON (Trademark); Subject Term: CONTINUOUS wave lasers; Subject Term: LIGHT absorption; Author-Supplied Keyword: Kapton®; Author-Supplied Keyword: laser heating; Author-Supplied Keyword: polyimide; Author-Supplied Keyword: spectral emittance; Number of Pages: 8p; Document Type: Article L3 - 10.1117/1.OE.51.12.121802 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98630680&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - BOLT, PAUL J. T1 - PAST AND PRESENT IN CHINA'S FOREIGN POLICY: From "Tribute System" to "Peaceful Rise.". JO - Pacific Affairs JF - Pacific Affairs Y1 - 2012/12// VL - 85 IS - 4 M3 - Book Review SP - 799 EP - 801 SN - 0030851X AB - A review of the book "Past and Present in China's Foreign Policy: From 'Tribute System' to 'Peaceful Rise,'" edited by John E. Wills, is presented. KW - NONFICTION KW - CHINA -- Foreign relations KW - WILLS, John E. KW - PAST & Present in China's Foreign Policy: From Tribute System to Peaceful Rise (Book) N1 - Accession Number: 83866887; BOLT, PAUL J. 1; Affiliation: 1: United States Air Force Academy, Colorado Springs, USA; Source Info: Dec2012, Vol. 85 Issue 4, p799; Subject Term: NONFICTION; Subject Term: CHINA -- Foreign relations; Reviews & Products: PAST & Present in China's Foreign Policy: From Tribute System to Peaceful Rise (Book); People: WILLS, John E.; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83866887&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Atkinson, Michael D. AU - Poggie, Jonathan AU - Camberos, José A. T1 - Control of separated flow in a reflected shock interaction using a magnetically-accelerated surface discharge. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2012/12// VL - 24 IS - 12 M3 - Article SP - 126102 PB - American Institute of Physics SN - 10706631 AB - A numerical investigation was carried out to explore the effects of a magnetically-accelerated surface discharge on a separated, turbulent boundary layer in supersonic flow. The geometry and test conditions were chosen for comparison to experiments carried out at Princeton University. For those studies, a reflected shock interaction was created using a 14° shock generator acting on an incoming turbulent boundary layer with a Reynolds number based on momentum thickness of 1 × 104 and a freestream Mach number of 2.6. Three-dimensional, Reynolds-averaged, Navier-Stokes (RANS) calculations were carried out to simulate the experiments, using the US3D code developed at the University of Minnesota. The baseline code was modified to include a semi-empirical model of the surface discharge actuator, implemented through source terms in the momentum equation, vibrational energy equation, and total energy equation. The computational results for the baseline flow and several control cases were compared to experimental measurements of mean surface pressure. The level of discrepancy was typical of well-resolved RANS computations of three-dimensional, separated flows: qualitative agreement was obtained, and the general experimental trends were captured by the numerical model. Substantial three-dimensionality was observed even in the baseline flow, and significant changes in the flow topology were observed with the application of the actuator. Because of the highly three-dimensional nature of this shock interaction, the initial interpretation of the experiments may need to be revisited. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEPARATION (Technology) KW - SHOCK waves KW - ACCELERATION (Mechanics) KW - SURFACE discharges (Electricity) KW - MAGNETIC fields KW - TURBULENT boundary layer KW - SUPERSONIC flow (Aerodynamics) KW - REYNOLDS number N1 - Accession Number: 84623725; Atkinson, Michael D. 1 Poggie, Jonathan 1 Camberos, José A. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7512,; Source Info: Dec2012, Vol. 24 Issue 12, p126102; Subject Term: SEPARATION (Technology); Subject Term: SHOCK waves; Subject Term: ACCELERATION (Mechanics); Subject Term: SURFACE discharges (Electricity); Subject Term: MAGNETIC fields; Subject Term: TURBULENT boundary layer; Subject Term: SUPERSONIC flow (Aerodynamics); Subject Term: REYNOLDS number; Number of Pages: 17p; Illustrations: 3 Diagrams, 7 Graphs; Document Type: Article L3 - 10.1063/1.4772197 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84623725&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhang, Peng AU - Hoff, Brad AU - Lau, Y. Y. AU - French, D. M. AU - Luginsland, J. W. T1 - Excitation of a slow wave structure. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2012/12// VL - 19 IS - 12 M3 - Article SP - 123104 PB - American Institute of Physics SN - 1070664X AB - The Green's function on a slow wave structure is constructed. The Green's function includes all radial modes, and for each radial mode, all space harmonics. We compare the analytic solution of the frequency response on the slow wave structure with that obtained from a particle-in-cell code. Favorable comparison is obtained when the first few lower order modes are resonantly excited. This gives some confidence in the prediction of converting a pulse train into radiation using a slow wave structure. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUCLEAR excitation KW - NUCLEAR structure KW - GREEN'S functions KW - HARMONICS (Electric waves) KW - PARTICLES (Nuclear physics) KW - PREDICTION (Logic) N1 - Accession Number: 84623813; Zhang, Peng 1 Hoff, Brad 2 Lau, Y. Y. 1 French, D. M. 2 Luginsland, J. W. 3; Affiliation: 1: Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109-2104, 2: Air Force Research Laboratory, Kirtland AFB, Albuquerque, New Mexico 87117, 3: Air Force Office of Scientific Research, Arlington, Virginia 22203,; Source Info: Dec2012, Vol. 19 Issue 12, p123104; Subject Term: NUCLEAR excitation; Subject Term: NUCLEAR structure; Subject Term: GREEN'S functions; Subject Term: HARMONICS (Electric waves); Subject Term: PARTICLES (Nuclear physics); Subject Term: PREDICTION (Logic); Number of Pages: 5p; Illustrations: 1 Color Photograph, 3 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.4771678 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84623813&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - French, David M. AU - Hoff, Brad W. AU - Tang, Wilkin AU - Heidger, Susan AU - Allen-Flowers, Jordan AU - Shiffler, Don T1 - Nonlinear transmission line based electron beam driver. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2012/12// VL - 83 IS - 12 M3 - Article SP - 123302 PB - American Institute of Physics SN - 00346748 AB - Gated field emission cathodes can provide short electron pulses without the requirement of laser systems or cathode heating required by photoemission or thermionic cathodes. The large electric field requirement for field emission to take place can be achieved by using a high aspect ratio cathode with a large field enhancement factor which reduces the voltage requirement for emission. In this paper, a cathode gate driver based on the output pulse train from a nonlinear transmission line is experimentally demonstrated. The application of the pulse train to a tufted carbon fiber field emission cathode generates short electron pulses. The pulses are approximately 2 ns in duration with emission currents of several mA, and the train contains up to 6 pulses at a frequency of 100 MHz. Particle-in-cell simulation is used to predict the characteristic of the current pulse train generated from a single carbon fiber field emission cathode using the same technique. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON beams KW - THERMIONIC emission KW - CATHODES KW - SIMULATION methods & models KW - APPROXIMATION theory KW - ELECTRON optics KW - CARBON fibers N1 - Accession Number: 84623364; French, David M. 1 Hoff, Brad W. 1 Tang, Wilkin 1 Heidger, Susan 1 Allen-Flowers, Jordan 2 Shiffler, Don 1; Affiliation: 1: Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico 87117, 2: Program in Applied Mathematics, University of Arizona, Tucson, Arizona 85721,; Source Info: Dec2012, Vol. 83 Issue 12, p123302; Subject Term: ELECTRON beams; Subject Term: THERMIONIC emission; Subject Term: CATHODES; Subject Term: SIMULATION methods & models; Subject Term: APPROXIMATION theory; Subject Term: ELECTRON optics; Subject Term: CARBON fibers; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 4p; Illustrations: 1 Black and White Photograph, 3 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1063/1.4770331 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84623364&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McDonald, N.R. AU - Bishop, S.M. AU - Briggs, B.D. AU - Van Nostrand, J.E. AU - Cady, N.C. T1 - Influence of the plasma oxidation power on the switching properties of Al/Cu x O/Cu memristive devices JO - Solid-State Electronics JF - Solid-State Electronics Y1 - 2012/12// VL - 78 M3 - Article SP - 46 EP - 50 SN - 00381101 AB - Abstract: In this study, Cu x O memristive devices have been fabricated that exhibited the unique property of complete nonpolar switching behavior. Complete nonpolar switching is not frequently reported in memritisve devices, rather a single bipolar and unipolar curve is reported. The Cu x O was created via plasma oxidation under varying reactive ion etch (RIE) power levels, ranging from 100 to 300W. The resulting Cu x O thin films ranged in thickness from 40nm to 620nm as determined by secondary ion mass spectrometry (SIMS) analysis. X-ray photoelectron spectroscopy (XPS) analyses also indicated that the Cu:O atomic ratios of these films increased from 1:1 to 3:2 with increasing RIE power. The SET and RESET voltages were ±2–3V and ±0.3–0.7V, respectively. High to low resistance state ratios up to 4,000 were observed and demonstrated dependence upon both oxide thickness and oxygen concentration. An analysis of the current conduction in the high and low resistance states is also given. [Copyright &y& Elsevier] AB - Copyright of Solid-State Electronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COPPER oxide KW - OXIDATION KW - SWITCHING circuits KW - MEMRISTORS KW - MICROFABRICATION KW - X-ray photoelectron spectroscopy KW - Complete nonpolar switching KW - Cu x O KW - Memristive device KW - Plasma oxidation N1 - Accession Number: 80032451; McDonald, N.R. 1,2; Email Address: nathan.mcdonald@rl.af.mil Bishop, S.M. 2 Briggs, B.D. 2 Van Nostrand, J.E. 1 Cady, N.C. 2; Affiliation: 1: Air Force Research Laboratory Rome Research Site, 525 Brooks Road, Rome, NY 13441, USA 2: University at Albany, SUNY, College of Nanoscale Science and Engineering, 257 Fuller Road, Albany, NY 12203, USA; Source Info: Dec2012, Vol. 78, p46; Subject Term: COPPER oxide; Subject Term: OXIDATION; Subject Term: SWITCHING circuits; Subject Term: MEMRISTORS; Subject Term: MICROFABRICATION; Subject Term: X-ray photoelectron spectroscopy; Author-Supplied Keyword: Complete nonpolar switching; Author-Supplied Keyword: Cu x O; Author-Supplied Keyword: Memristive device; Author-Supplied Keyword: Plasma oxidation; NAICS/Industry Codes: 335313 Switchgear and Switchboard Apparatus Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.sse.2012.06.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=80032451&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bales, James AU - Bales, Kann T1 - Swimming Overuse Injuries Associated With Triathlon Training. JO - Sports Medicine & Arthroscopy Review JF - Sports Medicine & Arthroscopy Review Y1 - 2012/12// VL - 20 IS - 4 M3 - Article SP - 196 EP - 199 SN - 10628592 AB - The article focuses on the swimming overuse injuries that occur during the training of athletes for triathlon, sports competition. It includes information on swimming overuse injuries in triathletes which involves shoulder pain that occur due to repetitive overhead motion resulting in microtrauma, mechanical impingement or generalized laxity. KW - SWIMMING injuries KW - OVERUSE injuries KW - TRIATHLON KW - JOINTS (Anatomy) -- Hypermobility KW - SHOULDER -- Wounds & injuries KW - SPORTS competitions KW - SWIMMING -- Training KW - glenohumeral instability KW - impingement KW - overuse injury KW - rotator cuff tendinitis KW - swimming KW - triathlon N1 - Accession Number: 83761227; Bales, James 1 Bales, Kann 1,2; Affiliation: 1: US Air Force Academy, Colorado Springs, CO 2: JKB Medical Exams, Monument, CO.; Source Info: Dec2012, Vol. 20 Issue 4, p196; Subject Term: SWIMMING injuries; Subject Term: OVERUSE injuries; Subject Term: TRIATHLON; Subject Term: JOINTS (Anatomy) -- Hypermobility; Subject Term: SHOULDER -- Wounds & injuries; Subject Term: SPORTS competitions; Subject Term: SWIMMING -- Training; Author-Supplied Keyword: glenohumeral instability; Author-Supplied Keyword: impingement; Author-Supplied Keyword: overuse injury; Author-Supplied Keyword: rotator cuff tendinitis; Author-Supplied Keyword: swimming; Author-Supplied Keyword: triathlon; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83761227&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bales, James AU - Bales, Kann T1 - Training on a Knife's Edge: How to Balance Triathlon Training to Prevent Overuse Injuries. JO - Sports Medicine & Arthroscopy Review JF - Sports Medicine & Arthroscopy Review Y1 - 2012/12// VL - 20 IS - 4 M3 - Article SP - 214 EP - 216 SN - 10628592 AB - The article focuses on overuse injuries in athletes participating in triathlon sports championship. It informs about overuse injuries that occur in athletes due to overtraining in swimming, cycling and running at the sports competition. It includes suggestion for reallocation of balance between the disciplines with emphasis on swimming to prevent the overuse injuries. KW - OVERUSE injuries -- Prevention KW - OVERTRAINING KW - PHYSICAL training & conditioning KW - SWIMMING injuries KW - CYCLING accidents KW - TRIATHLON KW - biking KW - overtraining KW - overuse injury KW - running KW - swimming KW - triathlon N1 - Accession Number: 83761230; Bales, James 1 Bales, Kann 2; Affiliation: 1: US Air Force Academy, Colorado Springs, CO 2: JKB Medical Exams, Monument, CO; Source Info: Dec2012, Vol. 20 Issue 4, p214; Subject Term: OVERUSE injuries -- Prevention; Subject Term: OVERTRAINING; Subject Term: PHYSICAL training & conditioning; Subject Term: SWIMMING injuries; Subject Term: CYCLING accidents; Subject Term: TRIATHLON; Author-Supplied Keyword: biking; Author-Supplied Keyword: overtraining; Author-Supplied Keyword: overuse injury; Author-Supplied Keyword: running; Author-Supplied Keyword: swimming; Author-Supplied Keyword: triathlon; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83761230&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bales, James AU - Bales, Karrn T1 - Triathlon: How to Mentally Prepare for the Big Race. JO - Sports Medicine & Arthroscopy Review JF - Sports Medicine & Arthroscopy Review Y1 - 2012/12// VL - 20 IS - 4 M3 - Article SP - 217 EP - 219 SN - 10628592 AB - The article focuses on the mental preparations of the athletes participating in the triathlon sports competitions. It informs about the need of appropriate mental planning that should be carried out during training for cycling, swimming and running. It also informs about the need of nutrition, imaging and anticipation of the race for avoiding of anxiousness. KW - ATHLETES -- Psychology KW - TRIATHLON KW - CYCLING -- Training KW - SWIMMING -- Training KW - RUNNING -- Training KW - ANXIETY KW - biking KW - mental preparation KW - race tactics KW - run KW - swim KW - triathlon N1 - Accession Number: 83761231; Bales, James 1 Bales, Karrn 2; Affiliation: 1: US Air Force Academy 2: JKB Medical Exams, Monument, CO; Source Info: Dec2012, Vol. 20 Issue 4, p217; Subject Term: ATHLETES -- Psychology; Subject Term: TRIATHLON; Subject Term: CYCLING -- Training; Subject Term: SWIMMING -- Training; Subject Term: RUNNING -- Training; Subject Term: ANXIETY; Author-Supplied Keyword: biking; Author-Supplied Keyword: mental preparation; Author-Supplied Keyword: race tactics; Author-Supplied Keyword: run; Author-Supplied Keyword: swim; Author-Supplied Keyword: triathlon; NAICS/Industry Codes: 711219 Other Spectator Sports; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83761231&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Conner, Kenneth R. AU - McCarthy, Michael D. AU - Bajorska, Alina AU - Caine, Eric D. AU - Tu, Xin M. AU - Knox, Kerry L. T1 - Mood, Anxiety, and Substance-Use Disorders and Suicide Risk in a Military Population Cohort. JO - Suicide & Life-Threatening Behavior JF - Suicide & Life-Threatening Behavior Y1 - 2012/12// VL - 42 IS - 6 M3 - Article SP - 699 EP - 708 SN - 03630234 AB - There are meager prospective data from nonclinical samples on the link between anxiety disorders and suicide or the extent to which the association varies over time. We examined these issues in a cohort of 309,861 U.S. Air Force service members, with 227 suicides over follow-up. Mental disorder diagnoses including anxiety, mood, and substance-use disorders ( SUD) were based on treatment encounters. Risk for suicide associated with anxiety disorders were lower compared with mood disorders and similar to SUD. Moreover, the associations between mood and anxiety disorders with suicide were greatest within a year of treatment presentation. [ABSTRACT FROM AUTHOR] AB - Copyright of Suicide & Life-Threatening Behavior is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANXIETY disorders KW - SUBSTANCE-induced disorders KW - SUICIDE KW - RESEARCH KW - MENTAL illness KW - UNITED States. Air Force N1 - Accession Number: 83927894; Conner, Kenneth R. 1,2 McCarthy, Michael D. 3 Bajorska, Alina 4 Caine, Eric D. 1,2 Tu, Xin M. 5 Knox, Kerry L. 1,2; Affiliation: 1: Department of Psychiatry, University of Rochester Medical Center 2: VISN2 Center of Excellence for Suicide Prevention, Canandaigua VA Medical Center 3: United States Air Force, AF Pentagon 4: Department of Community and Preventive Medicine, University of Rochester Medical Center 5: Department of Biostatistics, University of Rochester Medical Center; Source Info: Dec2012, Vol. 42 Issue 6, p699; Subject Term: ANXIETY disorders; Subject Term: SUBSTANCE-induced disorders; Subject Term: SUICIDE; Subject Term: RESEARCH; Subject Term: MENTAL illness; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 10p; Illustrations: 4 Charts; Document Type: Article L3 - 10.1111/j.1943-278X.2012.00125.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83927894&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Noe, G.T. AU - Haugan, H.J. AU - Brown, G.J. AU - Sanders, G.D. AU - Stanton, C.J. AU - Kono, J. T1 - Coherent phonon dynamics in short-period InAs/GaSb superlattices JO - Superlattices & Microstructures JF - Superlattices & Microstructures Y1 - 2012/12// VL - 52 IS - 6 M3 - Article SP - 1071 EP - 1077 SN - 07496036 AB - Abstract: We have performed ultrafast pump-probe spectroscopy studies on a series of InAs/GaSb-based short-period superlattice (SL) samples with periods ranging from 46Å to 71Å. We observe two types of oscillations in the differential reflectivity with fast (1–2ps) and slow (24ps) periods. The period of the fast oscillations changes with the SL period and can be explained as coherent acoustic phonons generated from carriers photoexcited within the SL. This mode provides an alternative method for determining the SL period. The period of the slow mode depends on the wavelength of the probe pulse and can be understood as a propagating coherent phonon wavepacket modulating the reflectivity of the probe pulse as it travels from the surface into the sample. [Copyright &y& Elsevier] AB - Copyright of Superlattices & Microstructures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHONONS KW - INDIUM compounds KW - GALLIUM compounds KW - SUPERLATTICES KW - OSCILLATING chemical reactions KW - COHERENT states KW - Coherent phonons KW - InAs/GaSb type-II superlattices KW - Infrared detectors N1 - Accession Number: 82612748; Noe, G.T. 1,2,3 Haugan, H.J. 4 Brown, G.J. 4 Sanders, G.D. 5 Stanton, C.J. 5 Kono, J. 1,2,3; Email Address: kono@rice.edu; Affiliation: 1: Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005, USA 2: Department of Physics and Astronomy, Rice University, Houston, TX 77005, USA 3: The Richard E. Smalley Institute for Nanoscale Science and Technology, Rice University, Houston, TX 77005, USA 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7707, USA 5: Department of Physics, University of Florida, Gainesville, FL 32611-8440, USA; Source Info: Dec2012, Vol. 52 Issue 6, p1071; Subject Term: PHONONS; Subject Term: INDIUM compounds; Subject Term: GALLIUM compounds; Subject Term: SUPERLATTICES; Subject Term: OSCILLATING chemical reactions; Subject Term: COHERENT states; Author-Supplied Keyword: Coherent phonons; Author-Supplied Keyword: InAs/GaSb type-II superlattices; Author-Supplied Keyword: Infrared detectors; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.spmi.2012.08.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82612748&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Colombi, John M. AU - Miller, Michael E. AU - Schneider, Michael AU - McGrogan, Major Jason AU - Long, Colonel David S. AU - Plaga, John T1 - Predictive mental workload modeling for semiautonomous system design: Implications for systems of systems. JO - Systems Engineering JF - Systems Engineering Y1 - 2012/12// VL - 15 IS - 4 M3 - Article SP - 448 EP - 460 SN - 10981241 AB - Predictive mental workload modeling is one established tool within the broad systems engineering activity of Human Systems Integration (HSI). Using system architecture as the foundation, this paper explores the use of Multiple Resource Theory to create representative workload models for evaluating operational system-of-systems (SoS) concepts. Through careful consideration of task demands, conflict generated between tasks, and workload mitigation strategies, informed design decision can improve overall human-system performance. An example involving a single pilot controlling multiple remotely piloted aircraft (RPA) is presented to illustrate the use of workload modeling. Several observations are made that drive measurably excessive workload: multitasking, communications, continuously updating situational awareness and mission planning. In addition, three metrics are proposed for incorporating human workload analysis during system design. This technique has applicability across a wide range systems-of-systems and operational concepts involving complex human-system interactions. © 2012 Wiley Periodicals, Inc. Syst Eng 15 [ABSTRACT FROM AUTHOR] AB - Copyright of Systems Engineering is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMPLOYEES -- Workload KW - SYSTEMS design KW - SYSTEMS development KW - SYSTEMS engineering KW - COMPUTER architecture KW - SYSTEMS theory KW - human systems integration (HSI) KW - modeling and simulation (M&S) KW - system-of-systems KW - workload N1 - Accession Number: 82370471; Colombi, John M. 1 Miller, Michael E. 1 Schneider, Michael 2 McGrogan, Major Jason 3 Long, Colonel David S. 4 Plaga, John 5; Affiliation: 1: Department of Systems and Engineering Management, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433 2: Aeronautical Systems Center/Engineering Directorate, Wright-Patterson AFB, OH 45433 3: Aeronautical Systems Center/B-52 Program Office, Wright-Patterson AFB, OH 45433 4: Air Force Research Laboratory/Sensors Directorate, 2241 Avionic Circle, Wright-Patterson AFB, OH 45433 5: 711th Human Performance Wing/Human Performance Integration Directorate, 2215 First Street, Wright-Patterson AFB, OH 45433-7028; Source Info: Dec2012, Vol. 15 Issue 4, p448; Subject Term: EMPLOYEES -- Workload; Subject Term: SYSTEMS design; Subject Term: SYSTEMS development; Subject Term: SYSTEMS engineering; Subject Term: COMPUTER architecture; Subject Term: SYSTEMS theory; Author-Supplied Keyword: human systems integration (HSI); Author-Supplied Keyword: modeling and simulation (M&S); Author-Supplied Keyword: system-of-systems; Author-Supplied Keyword: workload; Number of Pages: 13p; Illustrations: 3 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1002/sys.21210 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82370471&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fairchild, S. AU - Cahay, M. AU - Murray, P.T. AU - Grazulis, L. AU - Wu, X. AU - Poitras, D. AU - Lockwood, D.J. T1 - Grain size, texture, and crystallinity in lanthanum monosulfide thin films grown by pulsed laser deposition JO - Thin Solid Films JF - Thin Solid Films Y1 - 2012/12// VL - 524 M3 - Article SP - 166 EP - 172 SN - 00406090 AB - Abstract: We report a detailed investigation of the growth of lanthanum monosulfide (LaS) thin films by pulsed laser deposition on (001) magnesium oxide (MgO) substrates in a background of H2S for the purpose of optimizing their crystallinity, texture, and grain size. A variety of films were grown while varying the laser repetition rate, the temperature of the substrate, and the partial pressure of H2S. The thin films were characterized by X-ray diffraction (XRD), atomic force microscopy (AFM), Raman spectroscopy, and high resolution transmission electron microscopy. Films grown at 500°C with a H2S background pressure of 3.4×10−4 Pa and a laser repetition rate of 8Hz produced the LaS film with the largest grains whose size averaged 293nm. The XRD pattern of these films revealed that their orientation was predominantly (200). AFM images of the surface of these films showed large plate-like grains. This contrasts with the fine grain structure observed in LaS films grown at a lower substrate temperature and lower H2S pressure. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LANTHANUM compounds KW - THIN films KW - CRYSTAL structure KW - PARTICLE size distribution KW - PULSED laser deposition KW - TRANSMISSION electron microscopy KW - Atomic force microscopy KW - Pulsed laser deposition KW - Raman spectroscopy KW - Transmission electron microscopy KW - X-ray diffraction N1 - Accession Number: 83652175; Fairchild, S. 1; Email Address: steven.fairchild@wpafb.af.mil Cahay, M. 2 Murray, P.T. 3 Grazulis, L. 1 Wu, X. 4 Poitras, D. 4 Lockwood, D.J. 4; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: School of Electronics and Computing Systems, University of Cincinnati, Cincinnati, Ohio 45221, USA 3: Research Institute, University of Dayton, Dayton, OH 45469-0170, USA 4: Institute for Microstructural Sciences, National Research Council, Ottawa, Ontario, Canada K1A OR6; Source Info: Dec2012, Vol. 524, p166; Subject Term: LANTHANUM compounds; Subject Term: THIN films; Subject Term: CRYSTAL structure; Subject Term: PARTICLE size distribution; Subject Term: PULSED laser deposition; Subject Term: TRANSMISSION electron microscopy; Author-Supplied Keyword: Atomic force microscopy; Author-Supplied Keyword: Pulsed laser deposition; Author-Supplied Keyword: Raman spectroscopy; Author-Supplied Keyword: Transmission electron microscopy; Author-Supplied Keyword: X-ray diffraction; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.tsf.2012.10.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83652175&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rizzetta, D. AU - Visbal, M. T1 - Plasma flow control simulations of a low-Reynolds number low-aspect-ratio wing JO - Computers & Fluids JF - Computers & Fluids Y1 - 2012/11/30/ VL - 70 M3 - Article SP - 95 EP - 114 SN - 00457930 AB - Abstract: Large-eddy simulation (LES) is employed to investigate use of plasma-based control in order to improve aerodynamic performance of a flat-plate wing. The wing has a rectangular planform, a thickness to chord ratio of 0.016, and an aspect ratio of 2.0. Computations are carried out at a chord-based Reynolds number of 20,000, such that the configuration and flow conditions are typical of those commonly utilized in micro air vehicle (MAV) applications. Solutions are obtained to the Navier–Stokes equations, that were augmented by source terms used to represent body forces imparted by plasma actuators on the fluid. A simple phenomenological model provided these body forces resulting from the electric field generated by the plasma. The numerical method is based upon a high-fidelity time-implicit scheme and an implicit LES approach, which are applied to obtain solutions on an overset mesh system. The control strategy explores plasma actuators that are distributed in the spanwise direction along the wing leading edge, and actuators extending in the chordwise direction along the wing tip. The investigation considers plasma-induced forces that are imposed in either the co-flowing or counter-flow directions for the former arrangement, and directed inboard or outboard for the latter. Both continuous and pulsed operation of actuators are simulated, and the magnitude of the plasma force is varied in order to establish the most efficient means of control. Computations are carried out at angles of attack that are below (8.0deg) and above (25.0deg) the stall value. Control solutions are compared with baseline results without actuation to determine the most beneficial control strategies. It was found that actuation is effective only for sufficiently large values of the plasma force. A favorable comparison is shown with the limited available experimental data. [Copyright &y& Elsevier] AB - Copyright of Computers & Fluids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA (Ionized gases) KW - REYNOLDS number KW - CONTROL theory (Mathematics) KW - ASPECT ratio (Aerofoils) KW - LARGE eddy simulation models KW - AERODYNAMICS KW - Flow control KW - LES KW - Micro-air vehicles KW - Plasma actuation KW - Unsteady aerodynamics N1 - Accession Number: 83322110; Rizzetta, D.; Email Address: Donald.Rizzetta@wpafb.af.mil Visbal, M. 1; Affiliation: 1: Computational Sciences Branch, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7512, USA; Source Info: Nov2012, Vol. 70, p95; Subject Term: PLASMA (Ionized gases); Subject Term: REYNOLDS number; Subject Term: CONTROL theory (Mathematics); Subject Term: ASPECT ratio (Aerofoils); Subject Term: LARGE eddy simulation models; Subject Term: AERODYNAMICS; Author-Supplied Keyword: Flow control; Author-Supplied Keyword: LES; Author-Supplied Keyword: Micro-air vehicles; Author-Supplied Keyword: Plasma actuation; Author-Supplied Keyword: Unsteady aerodynamics; Number of Pages: 20p; Document Type: Article L3 - 10.1016/j.compfluid.2012.08.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83322110&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Melko, JoshuaJ. AU - Ard, Shaun G. AU - Fournier, Joseph A. AU - Shuman, Nicholas S. AU - Troe, Jürgen AU - Viggiano, Albert A. T1 - Exploring the Reactionsof Fe+and FeO+with NO and NO2. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2012/11/29/ VL - 116 IS - 47 M3 - Article SP - 11500 EP - 11508 SN - 10895639 AB - We report for the first time temperature dependences(from 300to 600 K) of the reactions of Fe+and FeO+withNO and NO2. Both ions react quickly with NO2, and their rate constants have weak negative temperature dependences.The former is consistent with the calculated energy profile alongthe Fe++ NO2reaction coordinate. Ground stateFe+reacts with NO2to produce only FeO+, while FeO+reacts with NO2to produceNO+exclusively. Certain source conditions produce excitedFe+, as evidenced by production of primary NO+, which is endothermic with the ground state by 0.35 eV. The roomtemperature rate constants are in agreement with previous values.For the reactions of Fe+and FeO+with NO, wefind an upper limit of <1.0 × 10–12cm3s–1for both rate constants, in contrastto a previous report of a rate constant of ∼1.7 × 10–11cm3s–1for Fe++ NO. Because this is an endothermic process, the prior reportinterpreted the reaction as a termolecular process involving two NOmolecules; instead, we show that the previous results were likelydue to an NO2impurity. Implications for other metal cationreactions which have been speculated to occur by the termolecularmechanism are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL reactions KW - NITRIC oxide KW - IRON ions KW - TEMPERATURE effect KW - FORCE & energy KW - REACTION mechanisms (Chemistry) N1 - Accession Number: 83993919; Melko, JoshuaJ. 1 Ard, Shaun G. 1 Fournier, Joseph A. 1 Shuman, Nicholas S. 1 Troe, Jürgen 1 Viggiano, Albert A. 1; Affiliation: 1: †Air Force Research Laboratory,Space Vehicles Directorate, Kirtland AFB, New Mexico 87117-5776, United States; Source Info: Nov2012, Vol. 116 Issue 47, p11500; Subject Term: CHEMICAL reactions; Subject Term: NITRIC oxide; Subject Term: IRON ions; Subject Term: TEMPERATURE effect; Subject Term: FORCE & energy; Subject Term: REACTION mechanisms (Chemistry); Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83993919&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alekseenko, A. AU - Josyula, E. T1 - Deterministic solution of the Boltzmann equation using a discontinuous Galerkin velocity discretization. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/11/26/ VL - 1501 IS - 1 M3 - Article SP - 279 EP - 286 PB - American Institute of Physics SN - 0094243X AB - We propose an approach for high order discretization of the Boltzmann equation in the velocity space using discontinuous Galerkin methods. Our approach employs a reformulation of the collision integral in the form of a bilinear operator with a time-independent kernel. In the fully non-linear case the complexity of the method is O(n8) operations per spatial cell where n is the number of degrees of freedom in one velocity direction. The new method is suitable for parallelization to a large number of processors. Techniques of automatic perturbation decomposition and linearisation are developed to achieve additional performance improvement. The number of operations per spatial cell in the linearised regime is O(n6). The method is applied to the solution of the spatially homogeneous relaxation problem. Mass momentum and energy is conserved to a good precision in the computed solutions. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BOLTZMANN'S equation KW - GALERKIN methods KW - COLLISION integrals KW - PERFORMANCE evaluation KW - RELAXATION phenomena KW - FORCE & energy N1 - Accession Number: 83622128; Alekseenko, A. 1 Josyula, E. 2; Affiliation: 1: Department of Mathematics, California State University Northridge, Northridge, California USA and Air Force Research Laboratory, Wright-Patterson AFB, Ohio, 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio,; Source Info: Nov2012, Vol. 1501 Issue 1, p279; Subject Term: BOLTZMANN'S equation; Subject Term: GALERKIN methods; Subject Term: COLLISION integrals; Subject Term: PERFORMANCE evaluation; Subject Term: RELAXATION phenomena; Subject Term: FORCE & energy; Number of Pages: 8p; Illustrations: 4 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.4769523 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83622128&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Burt, Jonathan M. AU - Josyula, Eswar AU - Blankson, Isaiah M. T1 - DSMC-based uncertainty quantification for a hypersonic shock interaction flow. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/11/26/ VL - 1501 IS - 1 M3 - Article SP - 573 EP - 578 PB - American Institute of Physics SN - 0094243X AB - A global Monte Carlo approach for sensitivity analysis (SA) and uncertainty quantification (UQ) is integrated with a new DSMC code, and SA/UQ calculations are performed for a hypersonic double cone flow involving multiple shock-shock and shock-boundary layer interactions. Several input parameter uncertainties are considered, with different techniques utilized for inclusion of aleatory and epistemic uncertainties. Over 900 simulations, requiring more than 100,000 CPU hours, are performed as part of this work, and dominant sources of uncertainty are identified for both local and global output quantities. Simulation results are compared with published computational data to ensure simulation accuracy under nominal flow conditions, and UQ results are employed to help explain discrepancies between DSMC results and experimental measurements. Aleatory uncertainty in inflow velocity is found to be the dominant contributor to the total force and surface pressure at the primary shock impingement point, while epistemic uncertainty in the wall vibrational thermal accommodation coefficient is the leading source of uncertainty in impingement point heat flux and the total convective heat transfer rate. paper. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONTE Carlo method KW - COMPUTER simulation KW - HYPERSONIC flow KW - SENSITIVITY analysis KW - BOUNDARY layer (Aerodynamics) KW - PRESSURE KW - HEAT transfer N1 - Accession Number: 83622076; Burt, Jonathan M. 1 Josyula, Eswar 1 Blankson, Isaiah M. 2; Affiliation: 1: U.S. Air Force Research Laboratory Wright-Patterson Air Force Base, OH 4543, 2: NASA Glenn Research Center Cleveland, OH 44135,; Source Info: Nov2012, Vol. 1501 Issue 1, p573; Subject Term: MONTE Carlo method; Subject Term: COMPUTER simulation; Subject Term: HYPERSONIC flow; Subject Term: SENSITIVITY analysis; Subject Term: BOUNDARY layer (Aerodynamics); Subject Term: PRESSURE; Subject Term: HEAT transfer; Number of Pages: 6p; Illustrations: 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.4769593 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83622076&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, Robert Scott AU - Cambier, Jean-Luc T1 - Low noise fractional NTC collisions for DSMC. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/11/26/ VL - 1501 IS - 1 M3 - Article SP - 615 EP - 620 PB - American Institute of Physics SN - 0094243X AB - The ability to accurately simulate rare high energy collisions such as those found in ionization and combustion reactions is important to the advancement of the study of non-equilibrium behavior of these phenomena. A major difficulty for modeling these systems with particle codes is that chain-branching reactions result in exponential growth regimes for certain species. This work considers the use of fractional collision models in place of statistically sampled collision models combined with merging of computational particles to reduce statistical noise while avoiding runaway computational cost. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STATISTICAL noise KW - COLLISIONS (Physics) KW - MONTE Carlo method KW - SIMULATION methods & models KW - IONIZATION (Atomic physics) KW - COMBUSTION N1 - Accession Number: 83622039; Martin, Robert Scott 1 Cambier, Jean-Luc 2; Affiliation: 1: ERC Inc, 2: Spacecraft Propulsion Branch, Air Force Research Laboratory, Edwards AFB, CA 93524,; Source Info: Nov2012, Vol. 1501 Issue 1, p615; Subject Term: STATISTICAL noise; Subject Term: COLLISIONS (Physics); Subject Term: MONTE Carlo method; Subject Term: SIMULATION methods & models; Subject Term: IONIZATION (Atomic physics); Subject Term: COMBUSTION; Number of Pages: 6p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.4769599 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83622039&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lilly, T. C. AU - Cornella, B. M. AU - Gimelshein, S. F. AU - Ketsdever, A. D. T1 - On the velocity distribution of molecular species in pulsed optical lattices. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/11/26/ VL - 1501 IS - 1 M3 - Article SP - 645 EP - 652 PB - American Institute of Physics SN - 0094243X AB - Coherent Rayleigh scattering was, for the first time, simulated using the Direct Simulation Monte-Carlo technique with the motivation of ultimately using experimental line shapes to directly measurement the velocity distribution of the gas. Carbon dioxide, at 300 K and low pressure, was simulated at various laser energies in the collisionless regime and at various pressures for a simulated laser intensity of 4×1015 W/m2. Simulated results compare favorably to published experimental results and existing kinetic line shape models, appropriately capturing line shape narrowing with increased optical potential well depth. Additionally, the expected line shape from a non-equilibrium gas with a bi-Gaussian velocity distribution was investigated. As with an equilibrium gas, the simulated line shape follows the velocity distribution and exhibits line narrowing with increasing laser intensity. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VELOCITY distribution (Statistical mechanics) KW - OPTICAL lattices KW - RAYLEIGH scattering KW - SIMULATION methods & models KW - MONTE Carlo method KW - CARBON dioxide KW - PRESSURE N1 - Accession Number: 83622040; Lilly, T. C. 1 Cornella, B. M. 2 Gimelshein, S. F. 2 Ketsdever, A. D. 3; Affiliation: 1: University of Colorado, 1420 Austin Bluffs Parkway SENG444, Colorado Springs, CO 80918, 2: ERC Inc., 10 E Saturn Blvd., Edwards AFB, CA 95324, 3: Air Force Research Laboratory, 10 E Saturn Blvd., Edwards AFB, CA 95324,; Source Info: Nov2012, Vol. 1501 Issue 1, p645; Subject Term: VELOCITY distribution (Statistical mechanics); Subject Term: OPTICAL lattices; Subject Term: RAYLEIGH scattering; Subject Term: SIMULATION methods & models; Subject Term: MONTE Carlo method; Subject Term: CARBON dioxide; Subject Term: PRESSURE; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 8p; Illustrations: 2 Diagrams, 7 Graphs; Document Type: Article L3 - 10.1063/1.4769603 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83622040&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, Robert Scott AU - Cambier, Jean-Luc T1 - Moment preserving adaptive particle weights using octree velocity distributions for PIC simulations. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/11/26/ VL - 1501 IS - 1 M3 - Article SP - 872 EP - 879 PB - American Institute of Physics SN - 0094243X AB - The ratio of computational to physical particles is of primary concern to statistical particle based simulations such as DSMC and PIC. An adaptive computational particle weight algorithm is presented that conserves mass, momentum, and energy. This algorithm is then enhanced with an octree adaptive mesh in velocity space to mitigate artificial thermalization. The new octree merge is compared to a merge that randomly selects merge partners for a bi-Maxwellian velocity distribution. Results for crossing beams in a fixed potential well along with an electrostatic PIC version with and without MCC collisions based ionizing breakdown show the advantages of the merge algorithm to both fixed particle weights and randomly selected merge partners. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VELOCITY distribution (Statistical mechanics) KW - SIMULATION methods & models KW - ALGORITHMS KW - MOMENTUM (Mechanics) KW - FORCE & energy KW - COLLISIONS (Physics) N1 - Accession Number: 83621989; Martin, Robert Scott 1 Cambier, Jean-Luc 2; Affiliation: 1: ERC Inc., 2: Spacecraft Propulsion Branch, Air Force Research Laboratory, Edwards AFB, CA 93524,; Source Info: Nov2012, Vol. 1501 Issue 1, p872; Subject Term: VELOCITY distribution (Statistical mechanics); Subject Term: SIMULATION methods & models; Subject Term: ALGORITHMS; Subject Term: MOMENTUM (Mechanics); Subject Term: FORCE & energy; Subject Term: COLLISIONS (Physics); Number of Pages: 8p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.4769634 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83621989&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cornella, B. M. AU - Gimelshein, S. F. AU - Lilly, T. C. AU - Ketsdever, A. D. T1 - Coherent Rayleigh-Brillouin scattering in high intensity laser fields. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/11/26/ VL - 1501 IS - 1 M3 - Article SP - 1195 EP - 1201 PB - American Institute of Physics SN - 0094243X AB - Coherent Rayleigh-Brillouin scattering (CRBS) line shapes have been experimentally and numerically investigated for the first time in the high laser intensity regime (>1×1016 W/m2) for molecular nitrogen at 300 K. All narrowband pumps were used to generate deep, monochromatic potential wells in the experiment allowing for direct comparison with a DSMC numerical approach. Both results show a line shape narrowing compared to previous low intensity CRBS line shape models due to energy and momentum deposition from the laser field to the gas. The DSMC results indicate a temperature increase along the center of the laser pulse of 51 K and an induced bulk motion of 100 m/s. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAYLEIGH scattering KW - BRILLOUIN scattering KW - LASER beams KW - NUMERICAL analysis KW - NITROGEN KW - COMPARATIVE studies KW - MOMENTUM (Mechanics) N1 - Accession Number: 83621951; Cornella, B. M. 1 Gimelshein, S. F. 1 Lilly, T. C. 2 Ketsdever, A. D. 3; Affiliation: 1: ERC Inc., 10 E Saturn Blvd., Edwards AFB, CA 95324, 2: University of Colorado, 1420 Austin Bluffs Parkway UH 231, Colorado Springs, CO 80933, 3: Air Force Research Laboratory, 10 E Saturn Blvd., Edwards AFB, CA 95324,; Source Info: Nov2012, Vol. 1501 Issue 1, p1195; Subject Term: RAYLEIGH scattering; Subject Term: BRILLOUIN scattering; Subject Term: LASER beams; Subject Term: NUMERICAL analysis; Subject Term: NITROGEN; Subject Term: COMPARATIVE studies; Subject Term: MOMENTUM (Mechanics); NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 7p; Illustrations: 3 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.4769677 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83621951&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alsing, Paul. M. AU - Fuentes, Ivette T1 - Observer-dependent entanglement. JO - Classical & Quantum Gravity JF - Classical & Quantum Gravity Y1 - 2012/11/21/ VL - 29 IS - 22 M3 - Article SP - 1 EP - 37 SN - 02649381 AB - Understanding the observer-dependent nature of quantum entanglement has been a central question in relativistic quantum information. In this paper, we will review key results on relativistic entanglement in flat and curved spacetime and discuss recent work which shows that motion and gravity have observable effects on entanglement between localized systems [ABSTRACT FROM AUTHOR] AB - Copyright of Classical & Quantum Gravity is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM entanglement KW - OBSERVATION (Scientific method) KW - QUANTUM information science KW - GRAVITY KW - QUANTUM theory KW - RELATIVITY (Physics) N1 - Accession Number: 83291281; Alsing, Paul. M. 1 Fuentes, Ivette 2; Email Address: ivette.fuentes@nottingham.ac.uk; Affiliation: 1: Air Force Research Laboratory, Information Directorate, Rome, NY, USA 2: School of Mathematical Sciences, University of Nottingham, Nottingham NG7 2RD, UK; Source Info: 11/21/2012, Vol. 29 Issue 22, p1; Subject Term: QUANTUM entanglement; Subject Term: OBSERVATION (Scientific method); Subject Term: QUANTUM information science; Subject Term: GRAVITY; Subject Term: QUANTUM theory; Subject Term: RELATIVITY (Physics); Number of Pages: 37p; Document Type: Article L3 - 10.1088/0264-9381/29/22/224001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83291281&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hoff, Brad W. AU - Greenwood, Andrew D. AU - Mardahl, Peter J. AU - Haworth, Michael D. T1 - All Cavity-Magnetron Axial Extraction Technique. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2012/11/10/Nov2012 Part 3 VL - 40 IS - 11 M3 - Article SP - 3046 EP - 3051 SN - 00933813 AB - A compact axial \pi-mode extraction scheme, which is based on a patent by Greenwood, is demonstrated in conjunction with the UM/L-3 relativistic magnetron using the particle-in-cell code ICEPIC. Cases utilizing Greenwood's extraction technique were compared with power extraction using traditional radial waveguides. Average extracted power values in all simulated axial cases were found to be within +/-6.5% of the radial cases. Cases utilizing 85 ^\circ and 90^\circ sector waveguides were found to have efficiencies up to ten percentage points higher than the radial case. The best performing case was found to use a set of three axially oriented 90 ^\circ sector waveguides, shorted on the upstream side, with the short located 15 cm from the center of the magnetron apertures. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - AXIAL flow KW - EXTRACTION techniques KW - WAVEGUIDES KW - RADIO frequency KW - Apertures KW - Cavity resonators KW - Geometry KW - High power microwaves KW - Magnetic liquids KW - Microwave theory and techniques KW - radio-frequency extraction KW - Rectangular waveguides KW - relativistic magnetron N1 - Accession Number: 83467338; Hoff, Brad W. 1 Greenwood, Andrew D. 2 Mardahl, Peter J. 1 Haworth, Michael D. 1; Affiliation: 1: Directed Energy Directorate, Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, NM, USA 2: Directed Energy Directorate, Air Force Research Laboratory, Kirtland Air Force Base , Albuquerque, NM, USA; Source Info: Nov2012 Part 3, Vol. 40 Issue 11, p3046; Subject Term: MAGNETRONS; Subject Term: AXIAL flow; Subject Term: EXTRACTION techniques; Subject Term: WAVEGUIDES; Subject Term: RADIO frequency; Author-Supplied Keyword: Apertures; Author-Supplied Keyword: Cavity resonators; Author-Supplied Keyword: Geometry; Author-Supplied Keyword: High power microwaves; Author-Supplied Keyword: Magnetic liquids; Author-Supplied Keyword: Microwave theory and techniques; Author-Supplied Keyword: radio-frequency extraction; Author-Supplied Keyword: Rectangular waveguides; Author-Supplied Keyword: relativistic magnetron; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TPS.2012.2217758 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83467338&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lovejoy, Katherine S. AU - Lou, Alexander J. AU - Davis, Lauren E. AU - Sanchez, Timothy C. AU - Iyer, Srinivas AU - Corley, Cynthia A. AU - Wilkes, John S. AU - Feller, Russell K. AU - Fox, David T. AU - Koppisch, Andrew T. AU - Del Sesto, Rico E. T1 - Single-Pot Extraction-Analysis of Dyed Wool Fibers with Ionic Liquids. JO - Analytical Chemistry JF - Analytical Chemistry Y1 - 2012/11/06/ VL - 84 IS - 21 M3 - Article SP - 9169 EP - 9175 SN - 00032700 AB - Analytical capabilities to identify dyes associated with structurally robust wool fibers would critically assist crime-scene and explosion-scene forensics. Nondestructive separation of dyes from wool, removal of contaminants, and dye analysis by MALDI- or ESI-MS, were achieved in a single-pot, ionic liquid-based method. Ionic liquids (ILs) that readily denature the wool a-keratin structure have been identified and are conducive to small volume, high-throughput analysis for accelerated threat-response times. Wool dyed with commercial or natural, plant-based dyes have unique signatures that allow classification and matching of samples and identification of dyestuffs. Wool released 0.005 mg of dye per mg of dyed wool into the IL, allowing for analysis of single-thread sample sizes. The IL + dye mixture promotes sufficient ionization in MALDI-MS: addition of common MALDI matrices does not improve analysis of anionic wool dyes. An inexpensive, commercially available tetrabutylphosponium chloride IL was discovered to be capable of denaturing wool and was determined to be the most effective for this readily fieldable method. [ABSTRACT FROM AUTHOR] AB - Copyright of Analytical Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DYES & dyeing -- Wool KW - EXTRACTION (Chemistry) KW - FORENSIC chemistry KW - IONIC liquids KW - MATRIX-assisted laser desorption-ionization KW - ELECTROSPRAY ionization mass spectrometry KW - DYES & dyeing -- Chemistry KW - KERATIN N1 - Accession Number: 84097437; Lovejoy, Katherine S. 1 Lou, Alexander J. 1 Davis, Lauren E. 1 Sanchez, Timothy C. 2 Iyer, Srinivas 3 Corley, Cynthia A. 2 Wilkes, John S. 2 Feller, Russell K. 1 Fox, David T. 3 Koppisch, Andrew T. 3 Del Sesto, Rico E. 1; Email Address: ricod@lanl.gov; Affiliation: 1: Material Chemistry, Los Alamos National Laboratory, Los Alamos, NM, USA 2: Department of Chemistry, United States Air Force Academy, USAFA, CO, USA 3: Biosciences Division, Los Alamos National Laboratory, Los Alamos, NM, USA; Source Info: 11/6/2012, Vol. 84 Issue 21, p9169; Subject Term: DYES & dyeing -- Wool; Subject Term: EXTRACTION (Chemistry); Subject Term: FORENSIC chemistry; Subject Term: IONIC liquids; Subject Term: MATRIX-assisted laser desorption-ionization; Subject Term: ELECTROSPRAY ionization mass spectrometry; Subject Term: DYES & dyeing -- Chemistry; Subject Term: KERATIN; Number of Pages: 7p; Document Type: Article L3 - 10.1021/ac301873s UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84097437&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hunter, C. N. AU - Turner, D. B. AU - Jespersen, M. L. AU - Check, M. H. AU - Borton, P. T. AU - Glavin, N. R. AU - Voevodin, A. A. T1 - Fast photo-switchable surfaces for boiling heat transfer applications. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/11/05/ VL - 101 IS - 19 M3 - Article SP - 191603 PB - American Institute of Physics SN - 00036951 AB - Several milligrams of the ruthenium-centered organometallic complex, ruthenium bis-4,4′-di(thiomethyl)-2,2′-bipyridine, mono-2 -(2-pyridyl)-1,3-oxathiane ([Ru{(HS-CH2)2-bpy}2{pox}](PF6)2) were synthesized and used to produce a self assembled monolayer film on a gold substrate. X-ray photoelectron spectroscopy analysis of the film detected the presence of bound thiolate, which is an indication of a chemisorbed film. Water contact angle measurements were performed before and after 5 min of visible light irradiation using an ozone-free 1000 W Xe(Hg) arc source with a 425-680 nm long pass mirror. The contact angle changed from 52° pre-irradiation (hydrophilic state) to 95° post-irradiation (hydrophobic state). [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT transfer KW - BOILING-points KW - RUTHENIUM KW - ORGANOMETALLIC compounds KW - MONOMOLECULAR films KW - X-ray photoelectron spectroscopy KW - IRRADIATION N1 - Accession Number: 83355523; Hunter, C. N. 1 Turner, D. B. 2 Jespersen, M. L. 3 Check, M. H. 2 Borton, P. T. 3 Glavin, N. R. 1 Voevodin, A. A. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, 2941 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433, 2: Universal Technology Corporation, 1270 North Fairfield Road, Dayton, Ohio 45532, 3: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469,; Source Info: 11/5/2012, Vol. 101 Issue 19, p191603; Subject Term: HEAT transfer; Subject Term: BOILING-points; Subject Term: RUTHENIUM; Subject Term: ORGANOMETALLIC compounds; Subject Term: MONOMOLECULAR films; Subject Term: X-ray photoelectron spectroscopy; Subject Term: IRRADIATION; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 4p; Illustrations: 2 Diagrams, 1 Graph; Document Type: Article L3 - 10.1063/1.4766345 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83355523&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sullivan, P. AU - Moate, J. AU - Stone, B. AU - Atkinson, J. AU - Hashisho, Z. AU - Rood, M. T1 - Physical and chemical properties of PAN-derived electrospun activated carbon nanofibers and their potential for use as an adsorbent for toxic industrial chemicals. JO - Adsorption JF - Adsorption Y1 - 2012/11// VL - 18 IS - 3/4 M3 - Article SP - 265 EP - 274 SN - 09295607 AB - A recently developed carbon material, electrospun Activated Carbon nanoFiber (ACnF), exhibits strong potential for use as an adsorbent for toxic industrial chemicals (TICs). As-prepared ACnF contains as much as 9.6 wt% nitrogen, creating a basic surface that enhances acid-gas adsorption. ACnF shows 4-20 times greater HCN adsorption capacities and 2-5 times greater SO adsorption capacities in dry nitrogen, compared to commercially available activated carbon fiber cloth (ACFC) and Calgon BPL™ granular activated carbon, which are considered here as reference adsorbents. ACnF has 50 % of the micropore volume (0.30 cm/g) of these reference adsorbents, which limits its adsorption capacity at high concentrations for volatile organic compounds (>500 ppm). However, at low concentrations (<500 ppm), ACnF has a similar capacity to ACFC and about three times the VOC adsorption capacity of Calgon BPL™. ACnF's small fiber diameters (0.2-1.5 μm) allow for higher mass transfer coefficients, resulting in adsorption kinetics nearly twice as fast as ACFC and eight times as fast as Calgon BPL™. ACnF drawbacks include hydrophilicity and reduced structural strength. The rapid adsorption kinetics and high capacity for acidic TICs warrant further investigation of ACnF as an adsorbent in respiratory protection and indoor air quality applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Adsorption is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOFIBERS KW - ACTIVATED carbon KW - SORBENTS KW - ADSORPTION KW - NITROGEN KW - VOLATILE organic compounds KW - Activated carbon KW - Adsorption KW - Butane KW - HCN KW - Nanofiber KW - SO KW - Toxic industrial chemical N1 - Accession Number: 82052052; Sullivan, P. 1 Moate, J. 1 Stone, B. 2 Atkinson, J. 3 Hashisho, Z. 4 Rood, M. 3; Email Address: mrood@illinois.edu; Affiliation: 1: Air Force Research Laboratory, 139 Barnes Dr. Suite 2 Tyndall AFB 32403 USA 2: Applied Research Associates, 421 Oak St. Panama City 32401 USA 3: University of Illinois, Urbana 61801 USA 4: University of Alberta, Edmonton T6G 2M7 Canada; Source Info: Nov2012, Vol. 18 Issue 3/4, p265; Subject Term: NANOFIBERS; Subject Term: ACTIVATED carbon; Subject Term: SORBENTS; Subject Term: ADSORPTION; Subject Term: NITROGEN; Subject Term: VOLATILE organic compounds; Author-Supplied Keyword: Activated carbon; Author-Supplied Keyword: Adsorption; Author-Supplied Keyword: Butane; Author-Supplied Keyword: HCN; Author-Supplied Keyword: Nanofiber; Author-Supplied Keyword: SO; Author-Supplied Keyword: Toxic industrial chemical; NAICS/Industry Codes: 325998 All Other Miscellaneous Chemical Product and Preparation Manufacturing; NAICS/Industry Codes: 325999 All other miscellaneous chemical product manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1007/s10450-012-9399-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82052052&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anderson, James W. T1 - 7 Deadly Scenarios: A Military Futurist Explores War in the 21st Century. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2012/11//Nov/Dec2012 VL - 26 IS - 6 M3 - Book Review SP - 182 EP - 183 PB - Superintendent of Documents SN - 1555385X AB - The article reviews the book "7 Deadly Scenarios: A Military Futurist Explores War in the 21st Century" by Andrew F. Krepinevich. KW - WAR KW - NONFICTION KW - KREPINEVICH, Andrew F. KW - SEVEN Deadly Scenarios: A Military Futurist Explores War in the 21st Century (Book) N1 - Accession Number: 87572302; Anderson, James W. 1; Affiliation: 1: US Air Force Academy, Colorado; Source Info: Nov/Dec2012, Vol. 26 Issue 6, p182; Subject Term: WAR; Subject Term: NONFICTION; Reviews & Products: SEVEN Deadly Scenarios: A Military Futurist Explores War in the 21st Century (Book); People: KREPINEVICH, Andrew F.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87572302&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Javorsek, D. AU - Brewer, M. AU - Buncher, J. AU - Fischbach, E. AU - Gruenwald, J. AU - Heim, J. AU - Hoft, A. AU - Horan, T. AU - Kerford, J. AU - Kohler, M. AU - Lau, J. AU - Longman, A. AU - Mattes, J. AU - Mohsinally, T. AU - Newport, J. AU - Petrelli, M. AU - Stewart, C. AU - Jenkins, J. AU - Lee, R. AU - Morreale, B. T1 - Study of nuclear decays during a solar eclipse: Thule Greenland 2008. JO - Astrophysics & Space Science JF - Astrophysics & Space Science Y1 - 2012/11// VL - 342 IS - 1 M3 - Article SP - 9 EP - 13 PB - Springer Science & Business Media B.V. SN - 0004640X AB - Recent efforts to determine the cause of anomalous experimental nuclear decay fluctuations suggests a possible solar influence. Here we report on the results from several nuclear decay experiments performed at Thule Air Base in Greenland during the solar eclipse on 1 August 2008. Thule was ideal for this experiment due to its proximity to the magnetic north pole which amplified changes in the charged particle flux and provided relatively stabilized conditions for nearly all environmental factors. An exhaustive list of relevant factors were monitored during the eclipse to help rule out possible systematic effects in the event of unexpected results. We included measurements of temperature, pressure, and humidity as well as power supply outputs, neutron count rates, and the Earth's local electric and magnetic fields. Nuclear decay measurements of C, Sr, Tc, Bi, Pa, and Am were made using Geiger-Müller (GM) ionization chambers. Although our data exhibit no evidence for a statistically significant change in the decay rate of any nuclide measured during the 1 August 2008 solar eclipse, small anomalies remain to be understood. [ABSTRACT FROM AUTHOR] AB - Copyright of Astrophysics & Space Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIOACTIVE decay KW - NUCLEAR physics KW - SOLAR eclipses KW - FLUCTUATIONS (Physics) KW - MAGNETIC pole KW - COSMIC magnetic fields KW - QAANAAQ (Greenland) KW - GREENLAND KW - Radioactive decay KW - Solar eclipse N1 - Accession Number: 82052059; Javorsek, D. 1; Email Address: javorsek@hotmail.com Brewer, M. 2 Buncher, J. 2 Fischbach, E. 2 Gruenwald, J. 2 Heim, J. 2 Hoft, A. 2 Horan, T. 2 Kerford, J. 2 Kohler, M. 2 Lau, J. 2 Longman, A. 2 Mattes, J. 2 Mohsinally, T. 2 Newport, J. 2 Petrelli, M. 2 Stewart, C. 2 Jenkins, J. 3 Lee, R. 4 Morreale, B. 4; Affiliation: 1: U.S. Air Force Flight Test Center, Edwards AFB 93524 USA 2: Department of Physics, Purdue University, West Lafayette 47907 USA 3: School of Nuclear Engineering, Purdue University, West Lafayette 47907 USA 4: Department of Physics, United States Air Force Academy, USAFA 80920 USA; Source Info: Nov2012, Vol. 342 Issue 1, p9; Subject Term: RADIOACTIVE decay; Subject Term: NUCLEAR physics; Subject Term: SOLAR eclipses; Subject Term: FLUCTUATIONS (Physics); Subject Term: MAGNETIC pole; Subject Term: COSMIC magnetic fields; Subject Term: QAANAAQ (Greenland); Subject Term: GREENLAND; Author-Supplied Keyword: Radioactive decay; Author-Supplied Keyword: Solar eclipse; Number of Pages: 5p; Document Type: Article L3 - 10.1007/s10509-012-1148-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82052059&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fagin, Barry AU - Skrien, Dale T1 - Debugging on the Shoulders of Giants: Von Neumann's Programs 65 Years Later. JO - Computer (00189162) JF - Computer (00189162) Y1 - 2012/11// VL - 45 IS - 11 M3 - Article SP - 59 EP - 68 SN - 00189162 AB - A study that examined and executed the programs John von Neumann wrote for the IAS machine reveals time-tested truths about computer architecture, side effects, instruction set design, and automatic programming—truths all foreseen by von Neumann and his team more than 50 years ago. [ABSTRACT FROM PUBLISHER] AB - Copyright of Computer (00189162) is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER architecture KW - AUTOMATIC programming (Computer science) KW - COMPUTER input-output equipment KW - SET design KW - COMPUTER programming KW - Computer architecture KW - IAS machine KW - IASSim emulator KW - Instruction sets KW - John KW - Programming KW - von Neumann KW - VON Neumann, John, 1903-1957 N1 - Accession Number: 83467384; Fagin, Barry 1 Skrien, Dale 2; Affiliation: 1: US Air Force Academy 2: Colby College; Source Info: Nov2012, Vol. 45 Issue 11, p59; Subject Term: COMPUTER architecture; Subject Term: AUTOMATIC programming (Computer science); Subject Term: COMPUTER input-output equipment; Subject Term: SET design; Subject Term: COMPUTER programming; Author-Supplied Keyword: Computer architecture; Author-Supplied Keyword: IAS machine; Author-Supplied Keyword: IASSim emulator; Author-Supplied Keyword: Instruction sets; Author-Supplied Keyword: John; Author-Supplied Keyword: Programming; Author-Supplied Keyword: von Neumann; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); NAICS/Industry Codes: 541511 Custom Computer Programming Services; NAICS/Industry Codes: 541519 Other Computer Related Services; People: VON Neumann, John, 1903-1957; Number of Pages: 10p; Document Type: Article L3 - 10.1109/MC.2012.69 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83467384&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kahn, Leonard T1 - Rule Consequentialism and Scope. JO - Ethical Theory & Moral Practice JF - Ethical Theory & Moral Practice Y1 - 2012/11// VL - 15 IS - 5 M3 - Article SP - 631 EP - 646 PB - Springer Science & Business Media B.V. SN - 13862820 AB - Rule consequentialism (RC) holds that the rightness and wrongness of actions is determined by an ideal moral code, i.e., the set of rules whose internalization would have the best consequences. But just how many moral codes are there supposed to be? Absolute RC holds that there is a single morally ideal code for everyone, while Relative RC holds that there are different codes for different groups or individuals. I argue that Relative RC better meets the test of reflective equilibrium than Absolute RC. In particular, I contend that Relative RC is superior because it accommodates our convictions about costless benefits. Some have charged that Relative RC threatens our convictions about the generality of moral codes and that it leads inevitably to what Brad Hooker calls 'runaway relativism.' I argue that Relative RC has principled reasons for stopping this imagined slide down the slippery slope. [ABSTRACT FROM AUTHOR] AB - Copyright of Ethical Theory & Moral Practice is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ETHICS KW - CONSEQUENTIALISM (Ethics) KW - DESPOTISM KW - RELATIVITY KW - Absolutism KW - Brandt KW - Consequentialism KW - Ethics KW - Hooker KW - Parfit KW - Reflective equilibrium KW - Relativism KW - Rule KW - Singer KW - HOOKER, Brad N1 - Accession Number: 82672220; Kahn, Leonard 1; Email Address: leonardkahn@gmail.com; Affiliation: 1: Department of Philosophy, United States Air Force Academy, 2354 Fairchild, Drive, USAF Academy Colorado Springs 80840-6256 USA; Source Info: Nov2012, Vol. 15 Issue 5, p631; Subject Term: ETHICS; Subject Term: CONSEQUENTIALISM (Ethics); Subject Term: DESPOTISM; Subject Term: RELATIVITY; Author-Supplied Keyword: Absolutism; Author-Supplied Keyword: Brandt; Author-Supplied Keyword: Consequentialism; Author-Supplied Keyword: Ethics; Author-Supplied Keyword: Hooker; Author-Supplied Keyword: Parfit; Author-Supplied Keyword: Reflective equilibrium; Author-Supplied Keyword: Relativism; Author-Supplied Keyword: Rule; Author-Supplied Keyword: Singer; People: HOOKER, Brad; Number of Pages: 16p; Document Type: Article L3 - 10.1007/s10677-012-9357-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82672220&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lu, Y. AU - Joseph, J. AU - Zhang, Q. AU - Maschmann, M. AU - Dai, L. AU - Baur, J. T1 - Large-Displacement Indentation Testing of Vertically Aligned Carbon Nanotube Arrays. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2012/11// VL - 52 IS - 9 M3 - Article SP - 1551 EP - 1554 SN - 00144851 AB - Mechanical properties and deformation of the vertically aligned carbon nanotube arrays (VA-CNTs) has been examined with large-displacement indentation tests inside a scanning electronic microscope (SEM). The in-situ indentation allows for establishment of the load-depth responses and real-time observations of the deformation processes. Under a cylindrical, flat indenter, the VA-CNTs exhibit elastic deformation at small displacement and then plastic deformation at large displacement. The critical indentation pressure (P), a measure of collapsing stress of the CNT arrays, is obtained. The magnitude of P is approximately equal to the collapsing stress of the carbon nanotube arrays obtained under uniaxial compression. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - NANOTUBES KW - DEFORMATIONS (Mechanics) KW - MATERIALS -- Mechanical properties KW - SCANNING electron microscopes KW - INDENTATION (Materials science) KW - Indentation KW - Large deformation KW - Vertically aligned carbon nanotubes N1 - Accession Number: 83307104; Lu, Y. 1; Email Address: chlu@engr.uky.edu Joseph, J. 1 Zhang, Q. Maschmann, M. Dai, L. 2 Baur, J. 3; Affiliation: 1: University of Kentucky, Lexington 40506 USA 2: Department of Chemical Engineering, Case Western University, Cleveland 44106 USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXBC, Wright-Patterson AFB 45433 USA; Source Info: Nov2012, Vol. 52 Issue 9, p1551; Subject Term: CARBON nanotubes; Subject Term: NANOTUBES; Subject Term: DEFORMATIONS (Mechanics); Subject Term: MATERIALS -- Mechanical properties; Subject Term: SCANNING electron microscopes; Subject Term: INDENTATION (Materials science); Author-Supplied Keyword: Indentation; Author-Supplied Keyword: Large deformation; Author-Supplied Keyword: Vertically aligned carbon nanotubes; Number of Pages: 4p; Document Type: Article L3 - 10.1007/s11340-012-9609-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83307104&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Iramnaaz, I. AU - Schellevis, H. AU - Rejaei, B. AU - Fitch, R. AU - Zhuang, Y. T1 - Self-Biased Low Loss Conductor Featured With Skin Effect Suppression for High Quality RF Passives. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2012/11// VL - 48 IS - 11 M3 - Article SP - 4139 EP - 4142 SN - 00189464 AB - We present experimental data for artificial metaconductors exhibiting skin effect suppression at microwave frequencies. The metaconductor consists of a stack comprising twelve periods of alternating ferromagnetic (Permalloy) and normal metal (Cu) layers. Near the effective antiferromagnetic resonant frequency the average in-plane magnetic permeability of the stack approaches zero, leading to an increase in the skin depth. Compared to a Cu-based device, up to 70% loss reduction has been achieved by a metaconductor based coplanar wave guide at \sim10 GHz without changing the propagation wavelength. Moreover, unlike conventional magnetic devices, no external magnetic bias is required due to the large magnetic anisotropy present in the ferromagnetic layers. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductors KW - SKIN effect (Electricity) KW - MICROWAVES KW - FERROMAGNETIC materials KW - ANTIFERROMAGNETISM KW - FERROMAGNETIC resonance KW - THIN films -- Magnetic properties KW - METAMATERIALS -- Magnetic properties KW - Coplanar wave guide KW - ferromagnetic resonance KW - magnetic thin film KW - metamaterial KW - radio frequency N1 - Accession Number: 82708578; Iramnaaz, I. 1 Schellevis, H. 2 Rejaei, B. 3 Fitch, R. 4 Zhuang, Y. 5; Affiliation: 1: $^{1}$ Department of Electrical Engineering,, Wright State University,, Dayton,, OH, USA 2: $^{2}$ Department of Electrical Engineering,, Delft University of Technology,, Delft,, The Netherlands 3: $^{3}$ Department of Electrical Engineering,, Sharif University of Technology,, Tehran,, Iran 4: $^{4}$Sensors Directorate, Air Force Research Laboratory,, Wright-Patterson AFB,, OH, USA 5: Department of Electrical Engineering, Wright State University, Dayton, OH, USA; Source Info: Nov2012, Vol. 48 Issue 11, p4139; Subject Term: ELECTRIC conductors; Subject Term: SKIN effect (Electricity); Subject Term: MICROWAVES; Subject Term: FERROMAGNETIC materials; Subject Term: ANTIFERROMAGNETISM; Subject Term: FERROMAGNETIC resonance; Subject Term: THIN films -- Magnetic properties; Subject Term: METAMATERIALS -- Magnetic properties; Author-Supplied Keyword: Coplanar wave guide; Author-Supplied Keyword: ferromagnetic resonance; Author-Supplied Keyword: magnetic thin film; Author-Supplied Keyword: metamaterial; Author-Supplied Keyword: radio frequency; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TMAG.2012.2200660 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82708578&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - DuBose, Joseph J. AU - Rajani, Ravi AU - Gilani, Ramy AU - Arthurs, Zachary A. AU - Morrison, Jonathan J. AU - Clouse, William D. AU - Rasmussen, Todd E. T1 - Endovascular management of axillo-subclavian arterial injury: A review of published experience JO - Injury JF - Injury Y1 - 2012/11// VL - 43 IS - 11 M3 - Article SP - 1785 EP - 1792 SN - 00201383 AB - Abstract: Background: The role of endovascular treatment for vascular trauma, including injury to the subclavian and axillary arteries, continues to evolve. Despite growing experience with the utilization of these techniques in the setting of artherosclerotic and aneurysmal disease, published reports in traumatic subclavian and axillary arterial injuries remain confined to sporadic case reports and case series. Methods: We conducted a review of the medical literature from 1990 to 2012 using Pubmed and OVID Medline databases to search for all reports documenting the use of endovascular stenting for the treatment of subclavian or axillary artery injuries. Thirty-two published reports were identified. Individual manuscripts were analysed to abstract data regarding mechanism, location and type of injury, endovascular technique and endograft type utilized, follow-up, and radiographic and clinical outcomes. Results: The use of endovascular stenting for the treatment of subclavian (150) or axillary (10) artery injuries was adequately described for only 160 patients from 1996 to the present. Endovascular treatment was employed after penetrating injury (56.3%; 29 GSW; 61 SW), blunt trauma (21.3%), iatrogenic catheter-related injury (21.8%) and surgical injury (0.6%). Injuries treated included pseudoaneurysm (77), AV fistula (27), occlusion (16), transection (8), perforation (22), dissection (6), or other injuries otherwise not fully described (4). Initial endovascular stent placement was successful in 96.9% of patients. Radiographic and clinical follow-up periods ranging from hospital discharge to 70 months revealed a follow-up patency of 84.4%. No mortalities related to endovascular intervention were reported. New neurologic deficits after the use of endovascular modalities were reported in only one patient. Conclusion: Endovascular treatment of traumatic subclavian and axillary artery injuries continues to evolve. Early results are promising, but experience with this modality and data on late follow-up remain limited. Additional multicenter prospective study and capture of data for these patients is warranted to further define the role of this treatment modality in the setting of trauma. [Copyright &y& Elsevier] AB - Copyright of Injury is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BLOOD-vessels -- Endoscopic surgery KW - SUBCLAVIAN artery KW - VASCULAR diseases KW - OUTCOME assessment (Medical care) KW - ANEURYSMS KW - MEDICAL radiography KW - TREATMENT KW - Calmodulin KW - Chlorpromazine KW - Leaf senescence KW - Salt stress KW - Sweet potato N1 - Accession Number: 80182201; DuBose, Joseph J. 1; Email Address: jjd3c@yahoo.com Rajani, Ravi 2 Gilani, Ramy 3 Arthurs, Zachary A. 4 Morrison, Jonathan J. 5 Clouse, William D. 6 Rasmussen, Todd E. 5; Affiliation: 1: University of Maryland Medical System, R Adams Cowley Shock Trauma Center, United States Air Force Baltimore Center for the Sustainment of Trauma and Readiness Skills (CSTARS), United States 2: Division of Vascular Surgery, Department of Surgery, Emory University School of Medicine, United States 3: Division of Vascular Surgery and Endovascular Therapy of the Michael E. DeBakey, Department of Surgery at Baylor College of Medicine, United States 4: San Antonio Military Medical Complex, Fort Sam Houston, TX, United States 5: United States Army Institute for Surgical Research, Fort Sam Houston, TX, United States 6: David Grant Medical Center, Travis Air Force Base, CA, United States; Source Info: Nov2012, Vol. 43 Issue 11, p1785; Subject Term: BLOOD-vessels -- Endoscopic surgery; Subject Term: SUBCLAVIAN artery; Subject Term: VASCULAR diseases; Subject Term: OUTCOME assessment (Medical care); Subject Term: ANEURYSMS; Subject Term: MEDICAL radiography; Subject Term: TREATMENT; Author-Supplied Keyword: Calmodulin; Author-Supplied Keyword: Chlorpromazine; Author-Supplied Keyword: Leaf senescence; Author-Supplied Keyword: Salt stress; Author-Supplied Keyword: Sweet potato; NAICS/Industry Codes: 621512 Diagnostic Imaging Centers; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.injury.2012.08.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=80182201&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Briones, Alejandro M. AU - Ervin, Jamie S. AU - Putnam, Shawn A. AU - Byrd, Larry W. AU - Jones, John G. T1 - A novel kinetically-controlled de-pinning model for evaporating water microdroplets JO - International Communications in Heat & Mass Transfer JF - International Communications in Heat & Mass Transfer Y1 - 2012/11// VL - 39 IS - 9 M3 - Article SP - 1311 EP - 1319 SN - 07351933 AB - Abstract: A numerical investigation of neutrally hydrophobic water microdroplet evaporation on a flat, isothermal surface was conducted. The axisymmetric time-dependent governing equations of continuity, momentum, energy, and species were solved using FLUENT. The numerical model includes temperature- and species-dependent thermodynamic and transport properties. The explicit volume of fluid (VOF) model with dynamic meshing and variable-time stepping was utilized. The continuum surface force (CSF), the gravitational body force, and Schrage''s molecular kinetic-based evaporation model were included in the governing equations. A novel approach was used to model de-pinning by using Blake''s molecular kinetic-based contact line motion theory. Experimentally, droplet evaporation data was acquired with a standard dispensing/imaging system and high-speed photography. There is good agreement between the measured and predicted dimensionless droplet profile as characterized by the droplet volume (∀d/∀0), dynamic contact angle (θ/θ0), contact radius (R/R0), and apex height (H/H0) when the de-pinned microdroplet numerical model is used. The de-pinning time (td) and volume (∀d/∀0) are controlled by both the de-pinning parameters (Kw and λ=n−2) and the accommodation coefficient (ε). On the other hand, the de-pinning contact angle (θd/θ0) and height (Hd/H0) are independent of ε. [Copyright &y& Elsevier] AB - Copyright of International Communications in Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL kinetics KW - MICRODROPLETS KW - NUMERICAL analysis KW - HYDROPHOBIC compounds KW - EVAPORATION (Chemistry) KW - WATER -- Analysis KW - MOLECULAR dynamics KW - Blake's contact line de-pinning model KW - Schrage's evaporation model KW - Sessile microdroplet KW - VOF N1 - Accession Number: 82063182; Briones, Alejandro M. 1; Email Address: alejandro.briones.ctr@wpatb.of.mil Ervin, Jamie S. 1 Putnam, Shawn A. 2 Byrd, Larry W. 3 Jones, John G. 3; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469, USA 2: Universal Technology Corporation, Dayton, OH 45434, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Nov2012, Vol. 39 Issue 9, p1311; Subject Term: CHEMICAL kinetics; Subject Term: MICRODROPLETS; Subject Term: NUMERICAL analysis; Subject Term: HYDROPHOBIC compounds; Subject Term: EVAPORATION (Chemistry); Subject Term: WATER -- Analysis; Subject Term: MOLECULAR dynamics; Author-Supplied Keyword: Blake's contact line de-pinning model; Author-Supplied Keyword: Schrage's evaporation model; Author-Supplied Keyword: Sessile microdroplet; Author-Supplied Keyword: VOF; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.icheatmasstransfer.2012.07.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82063182&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Putnam, Shawn A. AU - Briones, Alejandro M. AU - Ervin, Jamie S. AU - Hanchak, Michael S. AU - Byrd, Larry W. AU - Jones, John G. T1 - Interfacial heat transfer during microdroplet evaporation on a laser heated surface JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2012/11// VL - 55 IS - 23/24 M3 - Article SP - 6307 EP - 6320 SN - 00179310 AB - Abstract: A comprehensive experimental and numerical investigation on water microdroplet impingement and evaporation is presented from the standpoint of phase-change cooling technologies. The study investigates microdroplet impact and evaporation on a laser heated surface, outlining the experimental and numerical conditions necessary to quantify the interfacial thermal conductance (G) of liquid-metal interfaces during two-phase flow. To do this, continuum-level numerical simulations are conducted in parallel with experimental measurements facilitating high-speed photography and in-situ time-domain thermoreflectance (TDTR). During microdroplet evaporation on laser heated Al thin-films at room temperature, an effective interfacial thermal conductance of G eff =6.4±0.4 MW/m2 is measured with TDTR. This effective interfacial thermal conductance (G eff) is interpreted as the high-frequency (ac) interfacial heat transfer coefficient measured at the microdroplet/Al interface. Also on a laser heated surface, fractal-like condensation patterns form on the Al surface surrounding the evaporating microdroplet. This is due to the temperature gradient in the Al surface layer and cyclic vapor/air convection patterns outside the contact line. Laser heating, however, does not significantly increase the evaporation rate beyond that expected for microdroplet evaporation on isothermal Al thin-film surfaces. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERFACES (Physical sciences) KW - HEAT transfer KW - EVAPORATION (Chemistry) KW - LASER heating KW - SURFACES (Technology) KW - NUMERICAL analysis KW - COOLING KW - TEMPERATURE effect KW - Condensation KW - Evaporation KW - Simulation KW - Thermal conductance KW - Time-domain thermoreflectance KW - Two-phase N1 - Accession Number: 79338533; Putnam, Shawn A. 1,2; Email Address: shawn.a.putnam@gmail.com Briones, Alejandro M. 3,4 Ervin, Jamie S. 3,4 Hanchak, Michael S. 3,4 Byrd, Larry W. 3 Jones, John G. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Thermal Sciences and Materials Branch, Wright-Patterson AFB, OH 45433, United States 2: Universal Technology Corporation, 1270 N. Fairfield Rd., Dayton, OH 45432, United States 3: Air Force Research Laboratory, Propulsion Directorate, Thermal and Electrochemical Branch, Wright-Patterson AFB, OH 45433, United States 4: University of Dayton Research Institute, University of Dayton, Dayton, OH 45410, United States; Source Info: Nov2012, Vol. 55 Issue 23/24, p6307; Subject Term: INTERFACES (Physical sciences); Subject Term: HEAT transfer; Subject Term: EVAPORATION (Chemistry); Subject Term: LASER heating; Subject Term: SURFACES (Technology); Subject Term: NUMERICAL analysis; Subject Term: COOLING; Subject Term: TEMPERATURE effect; Author-Supplied Keyword: Condensation; Author-Supplied Keyword: Evaporation; Author-Supplied Keyword: Simulation; Author-Supplied Keyword: Thermal conductance; Author-Supplied Keyword: Time-domain thermoreflectance; Author-Supplied Keyword: Two-phase; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2012.05.067 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79338533&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanford, Bret AU - Kurdi, Mohammad AU - Beran, Philip AU - McClung, Aaron T1 - Shape, Structure, and Kinematic Parameterization of a Power-Optimal Hovering Wing. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2012/11//Nov/Dec2012 VL - 49 IS - 6 M3 - Article SP - 1687 EP - 1699 SN - 00218669 AB - In this paper, we investigate the aeroelastic hovering motions of a highly flexible flapping wing. It is desired to parameterize the wing shape, structural composition, and kinematic hovering motions, and then minimize the peak power required during the stroke, subject to trim and mechanical failure constraints. The aeroelastic model couples a nonlinear three-dimensional beam model to a quasi-steady blade element aerodynamic model, which is then solved in an implicit time-marching manner until the response becomes time-periodic. Sub-iterations are used within each time step to accommodate various physical nonlinearities. Gradients of the response with respect to the disparate design variables are computed analytically for optimization. Power-optimal flapping configurations are found to exploit interdependencies among the three types of design variables to effectively tailor the aeroelastic response. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - AEROELASTICITY KW - AERODYNAMICS KW - NONLINEAR theories KW - MATHEMATICAL analysis N1 - Accession Number: 84520355; Stanford, Bret 1,2 Kurdi, Mohammad 3,4 Beran, Philip 1,5 McClung, Aaron 1,6; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Research Engineer, Universal Technology Corporation, Air Vehicles Directorate, 2210 Eighth Street 3: Pennsylvania State University, Altoona, Pennsylvania 16601 4: Assistant Professor, Division of Business and Engineering, 3000 Ivyside Park 5: Principal Research Aerospace Engineer, Air Vehicles Directorate, 2210 Eighth Street 6: Research Aerospace Engineer, Air Vehicles Directorate, 2210 Eighth Street; Source Info: Nov/Dec2012, Vol. 49 Issue 6, p1687; Subject Term: AIRPLANE wings; Subject Term: AEROELASTICITY; Subject Term: AERODYNAMICS; Subject Term: NONLINEAR theories; Subject Term: MATHEMATICAL analysis; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.2514/1.C031094 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84520355&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morgan, Philip E. AU - Visbal, Miguel R. T1 - Hybrid Reynolds-Averaged Navier-Stokes/Large-Eddy Simulation Investigating Control of Flow over a Turret. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2012/11//Nov/Dec2012 VL - 49 IS - 6 M3 - Article SP - 1700 EP - 1717 SN - 00218669 AB - This investigation explores the flow over a turret at M∞ = 0.4 and ReD = 2.4 x 106 using both hybrid Reynolds-averaged Navier-Stokes/implicit large-eddy simulation (RANS/ILES) and k-∈-based unsteady Reynolds-averaged Navier-Stokes (URANS) simulations. Additional hybrid RANS/ILES simulations were performed to compare the effectiveness of two steady-suction flow control approaches. The hybrid RANS/ILES computations were obtained using a well-validated high-order Navier-Stokes flow solver employing a fourth-order compact spatial discretization in conjunction with a sixth-order low-pass spatial filter. The URANS simulations were performed using a second- order version of the flow solver and k-∈ turbulence model. The turret configuration consisted of a half-foot radius hemisphere atop a 4.5-in.-tall circular cylinder base. Both steady suction through a slot and a leeward porous turret shell were explored as forms of flow control. Time-mean hybrid RANS/ILES results, obtained on a 23 x 106-point mesh, compared reasonably well to experimental pressure coefficient and velocity profiles for the baseline flow. The separation angle was predicted to within 3 deg of experimental observations. The instantaneous hybrid RANS/ILES solutions display complex three-dimensional flow phenomena in the wake of the turret that the k-∈ URANS model was unable to resolve. Both steady-suction flow control approaches successfully attached the flow over most the turret dome and significantly reduced the size of the wake. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REYNOLDS number KW - AERODYNAMICS KW - NAVIER-Stokes equations KW - LARGE eddy simulation models KW - TURBULENCE N1 - Accession Number: 84520356; Morgan, Philip E. 1,2 Visbal, Miguel R. 1,3; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Senior Scientist, Ohio Aerospace Institute 3: Technical Area Leader, Computational Sciences Branch; Source Info: Nov/Dec2012, Vol. 49 Issue 6, p1700; Subject Term: REYNOLDS number; Subject Term: AERODYNAMICS; Subject Term: NAVIER-Stokes equations; Subject Term: LARGE eddy simulation models; Subject Term: TURBULENCE; Number of Pages: 18p; Document Type: Article L3 - 10.2514/1.C031239 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84520356&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gengler, Jamie J. AU - Shenogin, Sergei V. AU - Bultman, John E. AU - Roy, Ajit K. AU - Voevodin, Andrey A. AU - Muratore, Chris T1 - Limited thermal conductance of metal-carbon interfaces. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/11// VL - 112 IS - 9 M3 - Article SP - 094904 EP - 094904-6 PB - American Institute of Physics SN - 00218979 AB - The thermal conductance for a series of metal-graphite interfaces has been experimentally measured with time-domain thermoreflectance (TDTR). For metals with Debye temperatures up to ∼400 K, a linear relationship exists with the thermal conductance values. For metals with Debye temperatures in excess of ∼400 K, the measured metal-graphite thermal conductance values remain constant near 60 MW m-2 K-1. Titanium showed slightly higher conductance than aluminum, despite the closeness of atomic mass and Debye temperature for the two metals. Surface analysis was used to identify the presence of titanium carbide at the interface in contrast to the aluminum and gold-carbon interfaces (with no detectable carbide phases). It was also observed that air-cleaved graphite surfaces in contact with metals yielded slightly higher thermal conductance than graphite surfaces cleaved in vacuo. Examination of samples with scanning electron microscopy revealed that the lack of absorbed molecules on the graphite surface resulted in differences in transducer film morphology, thereby altering the interface conductance. Classical molecular dynamic simulations of metal-carbon nanotube thermal conductance values were calculated and compared to the TDTR results. The upper limit of metal-graphite thermal conductance is attributed to the decreased coupling at higher frequencies of the lighter metals studied, and to the decreased heat capacity for higher vibrational frequency modes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERFACES (Physical sciences) KW - RESEARCH KW - THERMAL conductivity KW - METALS KW - GRAPHITE KW - DEBYE temperatures KW - ATOMIC mass KW - TITANIUM carbide KW - ALUMINUM N1 - Accession Number: 83816769; Gengler, Jamie J. 1,2 Shenogin, Sergei V. 1,3 Bultman, John E. 1,4 Roy, Ajit K. 1 Voevodin, Andrey A. 1 Muratore, Chris 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Nanoelectronic Materials Branch, 2941 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433, 2: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, Ohio 45431, 3: UES, Inc., 4401 Dayton-Xenia Rd., Dayton, Ohio 45432, 4: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469,; Source Info: Nov2012, Vol. 112 Issue 9, p094904; Subject Term: INTERFACES (Physical sciences); Subject Term: RESEARCH; Subject Term: THERMAL conductivity; Subject Term: METALS; Subject Term: GRAPHITE; Subject Term: DEBYE temperatures; Subject Term: ATOMIC mass; Subject Term: TITANIUM carbide; Subject Term: ALUMINUM; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.4764006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83816769&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - PILCHAK, A.L. AU - SHIVELEY, A.R. AU - SHADE, P.A. AU - TILEY, J.S. AU - BALLARD, D.L. T1 - Using cross-correlation for automated stitching of two-dimensional multi-tile electron backscatter diffraction data. JO - Journal of Microscopy JF - Journal of Microscopy Y1 - 2012/11// VL - 248 IS - 2 M3 - Article SP - 172 EP - 186 PB - Wiley-Blackwell SN - 00222720 AB - A method for automatically aligning consecutive data sets of large, two-dimensional multi-tile electron backscatter diffraction (EBSD) scans with high accuracy was developed. The method involved first locating grain and phase boundaries within search regions containing overlapping data in adjacent scan tiles, and subsequently using cross-correlation algorithms to determine the relative position of the individual scan tiles which maximizes the fraction of overlapping boundaries. Savitzky-Golay filtering in two dimensions was used to estimate the background, which was then subtracted from the cross-correlation to enhance the peak signal in samples with a high density of interfaces. The technique was demonstrated on data sets with a range of interface densities. The equations were implemented as enhancements to a recently published open source code for stitching of multi-tile EBSD data sets. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microscopy is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CROSS correlation (Mathematics) KW - ELECTRON diffraction KW - BACKSCATTERING KW - SCANNING electron microscopy KW - DIRECTIONAL stitching KW - TILES KW - INTERFACES (Physical sciences) KW - cross-correlation KW - EBSD KW - SEM N1 - Accession Number: 82604965; PILCHAK, A.L. 1,2 SHIVELEY, A.R. 1,2,3 SHADE, P.A. 1,2 TILEY, J.S. 1 BALLARD, D.L. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate / RXLM, Wright Patterson Air Force Base, Ohio, U.S.A. 2: Universal Technology Corporation, Dayton, Ohio, U.S.A. 3: Present address: UES, Inc., Dayton, OH 45433, U.S.A.; Source Info: Nov2012, Vol. 248 Issue 2, p172; Subject Term: CROSS correlation (Mathematics); Subject Term: ELECTRON diffraction; Subject Term: BACKSCATTERING; Subject Term: SCANNING electron microscopy; Subject Term: DIRECTIONAL stitching; Subject Term: TILES; Subject Term: INTERFACES (Physical sciences); Author-Supplied Keyword: cross-correlation; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: SEM; NAICS/Industry Codes: 327120 Clay Building Material and Refractories Manufacturing; NAICS/Industry Codes: 444190 Other Building Material Dealers; NAICS/Industry Codes: 416390 Other specialty-line building supplies merchant wholesalers; NAICS/Industry Codes: 238340 Tile and Terrazzo Contractors; Number of Pages: 15p; Document Type: Article L3 - 10.1111/j.1365-2818.2012.03661.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82604965&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mattheakis, M. M. AU - Tsironis, G. P. AU - Kovanis, V. I. T1 - Luneburg lens waveguide networks. JO - Journal of Optics JF - Journal of Optics Y1 - 2012/11// VL - 14 IS - 11 M3 - Article SP - 1 EP - 1 SN - 20408978 AB - We investigate certain configurations of Luneburg lenses that form light propagating and guiding networks. We study single Luneburg lens dynamics and apply the single lens ray tracing solution to various arrangements of multiple lenses. The wave propagating features of the Luneburg lens networks are also verified through direct numerical solutions of Maxwell’s equations. We find that Luneburg lenses may form efficient waveguides for light propagation and guiding. The additional presence of nonlinearity improves the focusing characteristics of the networks. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Optics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL waveguides KW - LENSES KW - LIGHT propagation KW - MAXWELL equations KW - FOCUS (Optics) N1 - Accession Number: 98133388; Mattheakis, M. M. 1,2; Email Address: mariosmat@physics.uoc.gr Tsironis, G. P. 1,2; Email Address: gts@physics.uoc.gr Kovanis, V. I. 3; Email Address: vassilios.kovanis@gmail.com; Affiliation: 1: Department of Physics, University of Crete, PO Box 2208, 71003 Heraklion, Greece 2: Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, N Plastira 100, Vassilika Vouton, GR-70013, Heraklion, Crete, Greece 3: Air Force Research Laboratory, Sensors Directorate, Wright Patterson Air Force Base, OH 45433, USA; Source Info: Nov2012, Vol. 14 Issue 11, p1; Subject Term: OPTICAL waveguides; Subject Term: LENSES; Subject Term: LIGHT propagation; Subject Term: MAXWELL equations; Subject Term: FOCUS (Optics); NAICS/Industry Codes: 327215 Glass Product Manufacturing Made of Purchased Glass; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.1088/2040-8978/14/11/114006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98133388&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Crowther, Owen AU - Du, Lin-Shu AU - Moureau, David M. AU - Bicaku, Idajet AU - Salomon, Mark AU - Lawson, Jacob W. AU - Lucente, Leah R. AU - Mock, Keafer AU - Fellner, Joseph P. AU - Scanlon, Lawrence G. T1 - Effect of conductive carbon on capacity of iron phthalocyanine cathodes in primary lithium batteries JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2012/11// VL - 217 M3 - Article SP - 92 EP - 97 SN - 03787753 AB - Abstract: The effect of conductive carbon type and loading was examined for the iron phthalocyanine (FePc) cathode in primary lithium (Li) batteries. The use of nano graphene platelets (NGPs) as a conductive carbon was shown to increase the discharge capacity by a factor of at least 2.5 compared to typical carbon blacks and vapor grown carbon fibers. Discharge capacities of up to 2050mAh g−1 FePc, corresponding to the insertion of 43 Li+, were obtained for FePc based cathodes with 25% NGPs. This is the highest cathode capacity reported in literature to our knowledge. Cathodes with 10% NGP still demonstrated reasonable capacities. Electrolyte solutions based on propylene carbonate demonstrated higher discharge voltages than those with the 1.2 M lithium tetrafluoroborate in γ-butyrolactone and 1,2-dimethoxyethane (1:1 by volume). [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHTHALOCYANINES KW - CATHODES KW - CARBON-black KW - LITHIUM cells KW - IRON electrodes KW - CARBON fibers KW - PROPENE KW - Graphene KW - High capacity cathode KW - Iron phthalocyanine KW - Primary lithium battery N1 - Accession Number: 79186669; Crowther, Owen 1; Email Address: Owen.Crowther@MaxPowerInc.com Du, Lin-Shu 1 Moureau, David M. 1 Bicaku, Idajet 1 Salomon, Mark 1 Lawson, Jacob W. 2 Lucente, Leah R. 2 Mock, Keafer 3 Fellner, Joseph P. 3 Scanlon, Lawrence G. 3; Affiliation: 1: MaxPower Inc., 141 Christopher Lane, Harleysville, PA 19438, USA 2: University of Dayton Research Institute, Metals and Ceramics Division, Dayton, OH 45469, USA 3: Air Force Research Laboratory, Thermal & Electrochemical Branch, Wright Patterson Air Force Base, OH 45433, USA; Source Info: Nov2012, Vol. 217, p92; Subject Term: PHTHALOCYANINES; Subject Term: CATHODES; Subject Term: CARBON-black; Subject Term: LITHIUM cells; Subject Term: IRON electrodes; Subject Term: CARBON fibers; Subject Term: PROPENE; Author-Supplied Keyword: Graphene; Author-Supplied Keyword: High capacity cathode; Author-Supplied Keyword: Iron phthalocyanine; Author-Supplied Keyword: Primary lithium battery; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; NAICS/Industry Codes: 325130 Synthetic Dye and Pigment Manufacturing; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jpowsour.2012.06.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79186669&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aga Jr., Roberto S. AU - Ouchen, Fahima AU - Lesko, Alyssa AU - Telek, Brian A. AU - Fehrman Cory, Emily M. AU - Bartsch, Carrie M. AU - Lombardi III, Jack AU - Grote, James AU - Heckman, Emily M. T1 - Polymeric waveguide electro-optic beam-steering device with DNA biopolymer conductive cladding layers. JO - Optical Engineering JF - Optical Engineering Y1 - 2012/11// VL - 51 IS - 11 M3 - Article SP - 1 EP - 6 SN - 00913286 AB - A polymer electro-optic (EO) waveguide beam-steering device with deoxyribonucleic acid (DNA) biopolymer conductive cladding layers and a core layer of the commercially available EO polymer SEO100 is demonstrated with 100% relative poling efficiency. This demonstration device exhibits a deflection efficiency of 99 mrad/kV with a corresponding in-device EO coefficient r33 of 124 pm/V at 1550 nm. When the DNA biopolymer bottom cladding layer is replaced by the commonly used cladding polymer UV15, the deflection efficiency and in-device r33 drop to 34 mrad/kV and 43 pm/V, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVEGUIDES KW - RESEARCH KW - DNA KW - BIOPOLYMERS KW - CLADDING (Optics) KW - POLYMERS -- Research KW - beam steering KW - conductive cladding layer KW - DNA biopolymer KW - electro-optic effect KW - modulator KW - optical devices KW - polymer KW - waveguide N1 - Accession Number: 98629773; Aga Jr., Roberto S. 1; Email Address: Roberto.Aga.ctr@wpafb.af.mil Ouchen, Fahima 2 Lesko, Alyssa 3 Telek, Brian A. 3 Fehrman Cory, Emily M. 4 Bartsch, Carrie M. 5 Lombardi III, Jack 5 Grote, James 2 Heckman, Emily M. 5; Affiliation: 1: General Dynamics Information Technology, Dayton, Ohio 45431 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433 3: University of Dayton, Department of Chemistry, Dayton, Ohio 45469 4: University of Dayton, Electro-Optics Program, Dayton, Ohio 45469 5: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Ohio 45433; Source Info: Nov2012, Vol. 51 Issue 11, p1; Subject Term: WAVEGUIDES; Subject Term: RESEARCH; Subject Term: DNA; Subject Term: BIOPOLYMERS; Subject Term: CLADDING (Optics); Subject Term: POLYMERS -- Research; Author-Supplied Keyword: beam steering; Author-Supplied Keyword: conductive cladding layer; Author-Supplied Keyword: DNA biopolymer; Author-Supplied Keyword: electro-optic effect; Author-Supplied Keyword: modulator; Author-Supplied Keyword: optical devices; Author-Supplied Keyword: polymer; Author-Supplied Keyword: waveguide; Number of Pages: 6p; Document Type: Article L3 - 10.1117/1.OE.51.11.114602 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98629773&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lorenz, Alexander AU - Zimmermann, Natalie AU - Kumar, Satyendra AU - Evans, Dean R. AU - Cook, Gary AU - Kitzerow, Heinz-S. T1 - Doping the nematic liquid crystal 5CB with milled BaTiO3 nanoparticles. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2012/11// VL - 86 IS - 5-1 M3 - Article SP - 051704-1 EP - 051704-5 SN - 15393755 AB - The simple nematic mesogen 5CB was doped with milled BaTiO3 nanoparticles and was investigated with x-ray scattering. Doping with BaTiO3 nanoparticles of 9 nm in diameter led to the formation of crystallites. These crystallites precipitated and formed a waxlike nanodispersion of 5CB and nanoparticles, which led to intense x-ray scattering signals characteristic of a multilayer structure. Surprisingly, the multilayers possess unusual interlayer spacing, which cannot be explained by simple smectic order of the calamine molecules. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - X-ray scattering KW - NEMATIC liquid crystals KW - ZINC oxide KW - EXTRAPOLATION KW - NANOPARTICLES N1 - Accession Number: 84409347; Lorenz, Alexander 1 Zimmermann, Natalie 1 Kumar, Satyendra 2 Evans, Dean R. 3 Cook, Gary 3,4 Kitzerow, Heinz-S. 1; Affiliation: 1: Department of Chemistry, University of Paderborn, Warburger Strasse 100, Paderborn 33098, Germany 2: Department of Physics, Kent State University, Kent, Ohio 44242, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 4: Azimuth Corporation, 4134 Linden Avenue, Suite 300, Dayton, Ohio 45432, USA; Source Info: Nov2012, Vol. 86 Issue 5-1, p051704-1; Subject Term: X-ray scattering; Subject Term: NEMATIC liquid crystals; Subject Term: ZINC oxide; Subject Term: EXTRAPOLATION; Subject Term: NANOPARTICLES; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1103/PhysRevE:86.051704 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84409347&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pandey, Ras B. AU - Farmer, Barry L. T1 - Random Coil to Globular Thermal Response of a Protein (H3.1) with Three Knowledge-Based Coarse-Grained Potentials. JO - PLoS ONE JF - PLoS ONE Y1 - 2012/11// VL - 7 IS - 11 M3 - Article SP - 1 EP - 9 PB - Public Library of Science SN - 19326203 AB - The effect of temperature on the conformation of a histone (H3.1) is studied by a coarse-grained Monte Carlo simulation based on three knowledge-based contact potentials (MJ, BT, BFKV). Despite unique energy and mobility profiles of its residues, the histone H3.1 undergoes a systematic (possibly continuous) structural transition from a random coil to a globular conformation on reducing the temperature. The range over which such a systematic response in variation of the radius of gyration (Rg) with the temperature (T) occurs, however, depends on the potential, i.e. ΔTMJ ≈ 0.013-0.020, ΔTBT ≈ 0.018-0.026, and ΔTBFKV ≈ 0.006-0.013 (in reduced unit). Unlike MJ and BT potentials, results from the BFKV potential show an anomaly where the magnitude of Rg decreases on raising the temperature in a range ΔTA ≈ 0.015-0.018 before reaching its steady-state random coil configuration. Scaling of the structure factor, S(q) ∝ q-1/v, with the wave vector, q=2π/λ, and the wavelength, λ reveals a systematic change in the effective dimension (De~1/n) of the histone with all potentials (MJ, BT, BFKV): De~3 in the globular structure with De~2 for the random coil. Reproducibility of the general yet unique (monotonic) structural transition of the protein H3.1 with the temperature (in contrast to non-monotonic structural response of a similar but different protein H2AX) with three interaction sets shows that the knowledge-based contact potential is viable tool to investigate structural response of proteins. Caution should be exercise with the quantitative comparisons due to differences in transition regimes with these interactions. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RNA KW - RESEARCH KW - X-ray crystallography KW - GEOMETRY KW - RNA-protein interactions KW - RIBOSE KW - NUCLEIC acids N1 - Accession Number: 84716085; Pandey, Ras B. 1; Email Address: ras.pandey@usm.edu Farmer, Barry L. 2; Affiliation: 1: Department of Physics and Astronomy, University of Southern Mississippi, Hattiesburg, Missouri, United States of America 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio, United States of America; Source Info: Nov2012, Vol. 7 Issue 11, Special section p1; Subject Term: RNA; Subject Term: RESEARCH; Subject Term: X-ray crystallography; Subject Term: GEOMETRY; Subject Term: RNA-protein interactions; Subject Term: RIBOSE; Subject Term: NUCLEIC acids; Number of Pages: 9p; Document Type: Article L3 - 10.1371/journal.pone.0049352 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84716085&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - MacDonald, N. A. AU - Cappelli, M. A. AU - Hargus, W. A. T1 - Time-synchronized continuous wave laser-induced fluorescence on an oscillatory xenon discharge. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2012/11// VL - 83 IS - 11 M3 - Article SP - 113506 PB - American Institute of Physics SN - 00346748 AB - A novel approach to time-synchronizing laser-induced fluorescence measurements to an oscillating current in a 60 Hz xenon discharge lamp using a continuous wave laser is presented. A sample-hold circuit is implemented to separate out signals at different phases along a current cycle, and is followed by a lock-in amplifier to pull out the resulting time-synchronized fluorescence trace from the large background signal. The time evolution of lower state population is derived from the changes in intensity of the fluorescence excitation line shape resulting from laser-induced fluorescence measurements of the 6s′[1/2]10-6p′[3/2]2 xenon atomic transition at λ = 834.68 nm. Results show that the lower state population oscillates at twice the frequency of the discharge current, 120 Hz. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER-induced fluorescence KW - OSCILLATIONS KW - SIGNALS & signaling KW - XENON lamps KW - FLUORESCENCE KW - EXCITATION spectrum N1 - Accession Number: 83779292; MacDonald, N. A. 1 Cappelli, M. A. 1 Hargus, W. A. 2; Affiliation: 1: Stanford Plasma Physics Laboratory, Stanford University, Stanford, California 94305, 2: Air Force Research Laboratory, Edwards AFB, California 93524,; Source Info: Nov2012, Vol. 83 Issue 11, p113506; Subject Term: LASER-induced fluorescence; Subject Term: OSCILLATIONS; Subject Term: SIGNALS & signaling; Subject Term: XENON lamps; Subject Term: FLUORESCENCE; Subject Term: EXCITATION spectrum; Number of Pages: 5p; Document Type: Article L3 - 10.1063/1.4766958 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83779292&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Matthew P. AU - Suter, Robert M. AU - Lienert, Ulrich AU - Beaudoin, Armand J. AU - Fontes, Ernest AU - Almer, Jonathan AU - Schuren, Jay C. T1 - High-energy Needs and Capabilities to Study Multiscale Phenomena in Crystalline Materials. JO - Synchrotron Radiation News JF - Synchrotron Radiation News Y1 - 2012/11//Nov/Dec2012 VL - 25 IS - 6 M3 - Article SP - 18 EP - 26 SN - 08940886 AB - High-energy synchrotron X-rays are well suited to study engineering (structural) materials due to their small wavelength, adjustable energy and beam size, high flux, and ability to penetrate bulk polycrystalline samples up to centimeters in thickness. Recent advances in the use of high-speed, high-resolution detectors are making it possible to characterize microstructures at both the single grain and ensemble levels and to characterize the micromechanical responses of polycrystalline aggregates in three dimensions. These capabilities open new avenues of “in-situ” research that augments traditional forensic evidence with real-time data on functioning, evolving systems. X-ray scattering data are extremely rich, but taking the best advantage requires a continued refinement of experimental methods and analysis and a closer coupling of material models to detected intensities. [ABSTRACT FROM AUTHOR] AB - Copyright of Synchrotron Radiation News is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH energy forming KW - SYNCHROTRONS KW - CRYSTAL structure KW - MICROSTRUCTURE KW - X-ray scattering KW - POLYCRYSTALS N1 - Accession Number: 83776025; Miller, Matthew P. 1 Suter, Robert M. 2 Lienert, Ulrich 3,4 Beaudoin, Armand J. 5 Fontes, Ernest 1,6 Almer, Jonathan 3 Schuren, Jay C. 7; Affiliation: 1: Cornell University, Ithaca, New York, USA 2: Carnegie Mellon University, Pittsburgh, Pennsylvania, USA 3: Argonne National Laboratory, Argonne, Illinois, USA 4: DESY, Hamburg, Germany 5: University of Illinois at Urbana-Champaign, Champaign, Illinois, USA 6: Cornell High Energy Synchrotron Source, Ithaca, New York, USA 7: Air Force Research Laboratory, Materials and Manufacturing Directorate, Dayton, Ohio, USA; Source Info: Nov/Dec2012, Vol. 25 Issue 6, p18; Subject Term: HIGH energy forming; Subject Term: SYNCHROTRONS; Subject Term: CRYSTAL structure; Subject Term: MICROSTRUCTURE; Subject Term: X-ray scattering; Subject Term: POLYCRYSTALS; Number of Pages: 9p; Illustrations: 3 Color Photographs, 2 Graphs; Document Type: Article L3 - 10.1080/08940886.2012.736834 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83776025&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Potyrailo, Radislav A. AU - Nagraj, Nandini AU - Surman, Cheryl AU - Boudries, Hacene AU - Lai, Hanh AU - Slocik, Joseph M. AU - Kelley-Loughnane, Nancy AU - Naik, Rajesh R. T1 - Wireless sensors and sensor networks for homeland security applications JO - Trends in Analytical Chemistry: TRAC JF - Trends in Analytical Chemistry: TRAC Y1 - 2012/11// VL - 40 M3 - Article SP - 133 EP - 145 SN - 01659936 AB - Abstract: New sensor technologies for homeland security applications must meet the key requirements of sensitivity to detect agents below risk levels, selectivity to provide minimal false-alarm rates, and response speed to operate in high throughput environments, such as airports, sea ports, and other public places. Chemical detection using existing sensor systems is facing a major challenge of selectivity. In this review, we provide a brief summary of chemical threats of homeland security importance; focus in detail on modern concepts in chemical sensing; examine the origins of the most significant unmet needs in existing chemical sensors; and, analyze opportunities, specific requirements, and challenges for wireless chemical sensors and wireless sensor networks (WSNs). We further review a new approach for selective chemical sensing that involves the combination of a sensing material that has different response mechanisms to different species of interest, with a transducer that has a multivariable signal-transduction ability. This new selective chemical-sensing approach was realized using an attractive ubiquitous platform of battery-free passive radio-frequency identification (RFID) tags adapted for chemical sensing. We illustrate the performance of RFID sensors developed in measurements of toxic industrial materials, humidity-independent detection of toxic vapors, and detection of chemical-agent simulants, explosives, and strong oxidizers. [Copyright &y& Elsevier] AB - Copyright of Trends in Analytical Chemistry: TRAC is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIRELESS sensor networks KW - NATIONAL security KW - SENSITIVITY analysis KW - CHEMICAL detectors KW - RADIO frequency identification systems KW - EXPLOSIVES KW - OXIDIZING agents KW - Chemical agent KW - Chemical sensing KW - Homeland security KW - Multivariate statistical analysis KW - Radio-frequency identification (RFID) KW - Response speed KW - Selectivity KW - Sensitivity KW - Toxic industrial material (TIM) KW - Wireless sensor network (WSN) N1 - Accession Number: 82476018; Potyrailo, Radislav A.; Email Address: Potyrailo@crd.ge.com Nagraj, Nandini 1 Surman, Cheryl 1 Boudries, Hacene 2 Lai, Hanh 2 Slocik, Joseph M. 3 Kelley-Loughnane, Nancy 3 Naik, Rajesh R. 3; Affiliation: 1: General Electric Global Research Center, Niskayuna, NY, USA 2: Morpho Detection, Inc. Wilmington, MA, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Nov2012, Vol. 40, p133; Subject Term: WIRELESS sensor networks; Subject Term: NATIONAL security; Subject Term: SENSITIVITY analysis; Subject Term: CHEMICAL detectors; Subject Term: RADIO frequency identification systems; Subject Term: EXPLOSIVES; Subject Term: OXIDIZING agents; Author-Supplied Keyword: Chemical agent; Author-Supplied Keyword: Chemical sensing; Author-Supplied Keyword: Homeland security; Author-Supplied Keyword: Multivariate statistical analysis; Author-Supplied Keyword: Radio-frequency identification (RFID); Author-Supplied Keyword: Response speed; Author-Supplied Keyword: Selectivity; Author-Supplied Keyword: Sensitivity; Author-Supplied Keyword: Toxic industrial material (TIM); Author-Supplied Keyword: Wireless sensor network (WSN); NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 928110 National Security; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.trac.2012.07.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82476018&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hearn, John AU - Eichler, Jeffery AU - Hare, Christopher AU - Henley, Michael T1 - Cl2 deposition on soil matrices JO - Journal of Hazardous Materials JF - Journal of Hazardous Materials Y1 - 2012/10/30/ VL - 237-238 M3 - Article SP - 307 EP - 314 SN - 03043894 AB - Abstract: Deposition of chlorine gas, Cl2, on synthetic soil sample matrices was examined in a small chamber to ascertain its potential significance as a chemical sink during large-scale releases. The effects of organic matter, clay and sand mass fractions of the soil matrix, soil packing, and exposure to ultraviolet (UV) light on the observed Cl2 deposition were examined. Organic matter content was found to be the dominant soil variable investigated that affected Cl2 deposition; all other variables exhibited no measurable effect. Analytical results from the top 8.5mm of soil columns exposed to Cl2 were fit to a simple kinetic model with six adjustable parameters. The kinetic model included two reactive bins to account for fast- and slow-reacting material in the soil matrices. The resulting empirical equation agreed with the data to within a factor of two and accurately predicted results from soil mixes not used to optimize the adjustable parameters. Total Cl2 deposition, assuming a penetration depth of 8.5mm, was calculated to be as high as 160 metric tons per square kilometer for soil with an organic content of 10%, and inferred deposition velocities were as high as 0.5cm/s for organically rich soil. [Copyright &y& Elsevier] AB - Copyright of Journal of Hazardous Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHLORINE in soils KW - SOIL matric potential KW - SOIL compaction KW - ELECTROPLATING KW - CHEMICAL kinetics KW - HUMUS KW - ULTRAVIOLET radiation KW - Chlorine KW - Deposition KW - Soil N1 - Accession Number: 82108308; Hearn, John 1; Email Address: john.hearn@tyndall.af.mil Eichler, Jeffery 2 Hare, Christopher 1 Henley, Michael 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Airbase Technologies Division, 139 Barnes Dr. Suite 2, Tyndall AFB, FL 32403, United States 2: Universal Technology Corporation, 139 Barnes Dr. Suite 2, Tyndall AFB, FL 32403, United States; Source Info: Oct2012, Vol. 237-238, p307; Subject Term: CHLORINE in soils; Subject Term: SOIL matric potential; Subject Term: SOIL compaction; Subject Term: ELECTROPLATING; Subject Term: CHEMICAL kinetics; Subject Term: HUMUS; Subject Term: ULTRAVIOLET radiation; Author-Supplied Keyword: Chlorine; Author-Supplied Keyword: Deposition; Author-Supplied Keyword: Soil; NAICS/Industry Codes: 332813 Electroplating, Plating, Polishing, Anodizing, and Coloring; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 238910 Site Preparation Contractors; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jhazmat.2012.08.046 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82108308&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Friedman, Jeffrey F. AU - Miller, Thomas M. AU - Viggiano, A. A. T1 - Electron attachment to 14 halogenated alkenes and alkanes, 300-600 K. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2012/10/28/ VL - 137 IS - 16 M3 - Article SP - 164306 EP - 164306-10 PB - American Institute of Physics SN - 00219606 AB - Thermal electron attachment to 14 alkenes and alkanes with bromine, fluorine, and iodine substituents has been studied over the temperature range 300-600 K using a flowing-afterglow Langmuir-probe apparatus. Rate coefficients and anion products are reported, most for the first time. Among these were 3 isomers of C3F5Br and the 2 isomers of C3F7I. Four dibromide compounds were studied, all of which yield Br2- product in addition to Br- product. The results are analyzed using a statistical kinetic modeling approach, which is able to reproduce both attachment rate coefficients and product branching ratios within experimental uncertainty. The kinetic modeling indicates that factor of 2 differences in attachment rate coefficients to the isomeric species can be explained by subtle variations in the potential surfaces. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALKENES KW - HALOGENATION KW - ALKANES KW - THERMAL electrons KW - TEMPERATURE effect KW - OPTICAL isomers N1 - Accession Number: 82964183; Shuman, Nicholas S. 1 Friedman, Jeffrey F. 1 Miller, Thomas M. 1 Viggiano, A. A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117-5776,; Source Info: 10/28/2012, Vol. 137 Issue 16, p164306; Subject Term: ALKENES; Subject Term: HALOGENATION; Subject Term: ALKANES; Subject Term: THERMAL electrons; Subject Term: TEMPERATURE effect; Subject Term: OPTICAL isomers; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 1p; Illustrations: 6 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.4759168 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82964183&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Papanikolaou, Stefanos AU - Dimiduk, Dennis M. AU - Choi, Woosong AU - Sethna, James P. AU - Uchic, Michael D. AU - Woodward, Christopher F. AU - Zapperi, Stefano T1 - Quasi-periodic events in crystal plasticity and the self-organized avalanche oscillator. JO - Nature JF - Nature Y1 - 2012/10/25/ VL - 490 IS - 7421 M3 - Article SP - 517 EP - 521 PB - Nature Publishing Group SN - 00280836 AB - When external stresses in a system-physical, social or virtual-are relieved through impulsive events, it is natural to focus on the attributes of these avalanches. However, during the quiescent periods between them, stresses may be relieved through competing processes, such as slowly flowing water between earthquakes or thermally activated dislocation flow between plastic bursts in crystals. Such smooth responses can in turn have marked effects on the avalanche properties. Here we report an experimental investigation of slowly compressed nickel microcrystals, covering three orders of magnitude in nominal strain rate, in which we observe unconventional quasi-periodic avalanche bursts and higher critical exponents as the strain rate is decreased. Our experiments are faithfully reproduced by analytic and computational dislocation avalanche modelling that we have extended to incorporate dislocation relaxation, revealing the emergence of the self-organized avalanche oscillator: a novel critical state exhibiting oscillatory approaches towards a depinning critical point. This theory suggests that whenever avalanches compete with slow relaxation-in settings ranging from crystal microplasticity to earthquakes-dynamical quasi-periodic scale invariance ought to emerge. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASTICITY KW - CRYSTAL oscillators KW - AVALANCHES KW - NICKEL KW - STRAINS & stresses (Mechanics) N1 - Accession Number: 82762099; Papanikolaou, Stefanos 1 Dimiduk, Dennis M. 2 Choi, Woosong 3 Sethna, James P. 3 Uchic, Michael D. 2 Woodward, Christopher F. 2 Zapperi, Stefano 4; Affiliation: 1: Department of Mechanical Engineering and Materials Science and Department of Physics, Yale University, New Haven, Connecticut 06520-8286, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, Ohio 45433, USA 3: Laboratory of Atomic and Solid State Physics, Department of Physics, Clark Hall, Cornell University, Ithaca, New York 14853-2501, USA 4: 1] CNR-Consiglio Nazionale delle Ricerche, IENI, Via R. Cozzi 53, 20125 Milano, Italy [2] ISI Foundation, Via Alassio 11/c, 10126 Torino, Italy; Source Info: 10/25/2012, Vol. 490 Issue 7421, p517; Subject Term: PLASTICITY; Subject Term: CRYSTAL oscillators; Subject Term: AVALANCHES; Subject Term: NICKEL; Subject Term: STRAINS & stresses (Mechanics); NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 5p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1038/nature11568 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82762099&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H. J. AU - Brown, G. J. AU - Elhamri, S. AU - Mitchel, W. C. AU - Mahalingam, K. AU - Kim, M. AU - Noe, G. T. AU - Ogden, N. E. AU - Kono, J. T1 - Impact of growth temperature on InAs/GaInSb strained layer superlattices for very long wavelength infrared detection. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/10/22/ VL - 101 IS - 17 M3 - Article SP - 171105 EP - 171105-4 PB - American Institute of Physics SN - 00036951 AB - We explore the optimum growth space for a 47.0Å InAs/21.5 Å Ga0.75In0.25Sb superlattices (SLs) designed for the maximum Auger suppression for a very long wavelength infrared gap. Our growth process produces a consistent gap of 50 ± 5 meV. However, SL quality is sensitive to the growth temperature (Tg). For the SLs grown at 390-470 °C, a photoresponse signal gradually increases as Tg increases from 400 to 440 °C. Outside this temperature window, the SL quality deteriorates very rapidly. All SLs were n-type with mobility of ∼10 000 V/cm² and 300 K recombination lifetime of ∼70 ns for an optimized SL. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - INFRARED absorption KW - AUGER electrons KW - SURFACE temperature KW - WAVELENGTHS N1 - Accession Number: 90260083; Haugan, H. J. 1 Brown, G. J. 1 Elhamri, S. 2 Mitchel, W. C. 1 Mahalingam, K. 1 Kim, M. 1 Noe, G. T. 3 Ogden, N. E. 3 Kono, J. 3; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Department of Physics, University of Dayton, Ohio 45469, USA 3: Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, USA; Source Info: 10/22/2012, Vol. 101 Issue 17, p171105; Subject Term: SUPERLATTICES; Subject Term: INFRARED absorption; Subject Term: AUGER electrons; Subject Term: SURFACE temperature; Subject Term: WAVELENGTHS; Number of Pages: 4p; Illustrations: 1 Black and White Photograph, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.4764015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90260083&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cumby, Brad L. AU - Hayes, Gerard J. AU - Dickey, Michael D. AU - Justice, Ryan S. AU - Tabor, Christopher E. AU - Heikenfeld, Jason C. T1 - Reconfigurable liquid metal circuits by Laplace pressure shaping. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/10/22/ VL - 101 IS - 17 M3 - Article SP - 174102 EP - 174102-5 PB - American Institute of Physics SN - 00036951 AB - We report reconfigurable circuits formed by liquid metal shaping with <10 pounds per square inch (psi) Laplace and vacuum pressures. Laplace pressure drives liquid metals into microreplicated trenches, and upon release of vacuum, the liquid metal dewets into droplets that are compacted to 10-100×?less area than when in the channel. Experimental validation includes measurements of actuation speeds exceeding 30?cm/s, simple erasable resistive networks, and switchable 4.5?GHz antennas. Such capability may be of value for next generation of simple electronic switches, tunable antennas, adaptive reflectors, and switchable metamaterials. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID metals KW - RESEARCH KW - LAPLACE distribution KW - PRESSURE KW - VACUUM KW - ELECTRIC switchgear KW - ANTENNAS (Electronics) N1 - Accession Number: 90260177; Cumby, Brad L. 1 Hayes, Gerard J. 2 Dickey, Michael D. 2 Justice, Ryan S. 3 Tabor, Christopher E. 3 Heikenfeld, Jason C. 1; Affiliation: 1: School of Electronic and Computing Systems, University of Cincinnati, Cincinnati, Ohio 45221, USA 2: Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, USA; Source Info: 10/22/2012, Vol. 101 Issue 17, p174102; Subject Term: LIQUID metals; Subject Term: RESEARCH; Subject Term: LAPLACE distribution; Subject Term: PRESSURE; Subject Term: VACUUM; Subject Term: ELECTRIC switchgear; Subject Term: ANTENNAS (Electronics); NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 335931 Current-Carrying Wiring Device Manufacturing; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 335315 Switchgear and switchboard, and relay and industrial control apparatus manufacturing; NAICS/Industry Codes: 335313 Switchgear and Switchboard Apparatus Manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 335930 Wiring device manufacturing; Number of Pages: 5p; Illustrations: 2 Color Photographs, 1 Black and White Photograph, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.4764020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90260177&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Altfeder, Igor AU - Matveev, K. A. AU - Voevodin, A. A. T1 - Imaging the Electron-Phonon Interaction at the Atomic Scale. JO - Physical Review Letters JF - Physical Review Letters Y1 - 2012/10/19/ VL - 109 IS - 16 M3 - Article SP - 1 EP - 5 SN - 00319007 AB - Thin Pb films epitaxially grown on 7 X 7 reconstructed Si(lll) represent an ideal model system for studying the electron-phonon interaction at the metal-insulator interface. For this system, using a combination of scanning tunneling microscopy and inelastic electron tunneling spectroscopy, we performed direct real-space imaging of the electron-phonon coupling parameter. We found that Λ increases when the electron scattering at the Pb/Si(l 11) interface is diffuse and decreases when the electron scattering is specular. We show that the effect is driven by transverse redistribution of the electron density inside a quantum well. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review Letters is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON-phonon interactions KW - ATOMIC theory KW - EPITAXY KW - METALLIC films KW - SCANNING tunneling microscopy KW - INTERFACES (Physical sciences) KW - ELECTRON scattering N1 - Accession Number: 83597166; Altfeder, Igor 1; Email Address: Igor.Altfeder.Ctr@wpafb.af.mil Matveev, K. A. 2 Voevodin, A. A. 1; Affiliation: 1: Nanoelectronic Materials Branch, Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433, USA 2: Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA; Source Info: 10/19/2012, Vol. 109 Issue 16, p1; Subject Term: ELECTRON-phonon interactions; Subject Term: ATOMIC theory; Subject Term: EPITAXY; Subject Term: METALLIC films; Subject Term: SCANNING tunneling microscopy; Subject Term: INTERFACES (Physical sciences); Subject Term: ELECTRON scattering; Number of Pages: 5p; Document Type: Article L3 - 10.1103/PhysRevLett.109.166402 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83597166&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nag, S. AU - Zheng, Y. AU - Williams, R.E.A. AU - Devaraj, A. AU - Boyne, A. AU - Wang, Y. AU - Collins, P.C. AU - Viswanathan, G.B. AU - Tiley, J.S. AU - Muddle, B.C. AU - Banerjee, R. AU - Fraser, H.L. T1 - Non-classical homogeneous precipitation mediated by compositional fluctuations in titanium alloys JO - Acta Materialia JF - Acta Materialia Y1 - 2012/10/15/ VL - 60 IS - 18 M3 - Article SP - 6247 EP - 6256 SN - 13596454 AB - Abstract: This paper presents experimental evidence of homogeneous precipitation of the α-phase within the β matrix of a titanium alloy, and then accounts for this phase transformation by a new, non-classical mechanism involving compositional fluctuations, based on the pseudo-spinodal concept [1]. This mechanism involves local compositional fluctuations of small amplitude which, when of a certain magnitude, can favor thermodynamically certain regions of the β matrix to transform congruently to the α-phase but with compositions far from equilibrium. Subsequently, as measured experimentally using the tomographical atom probe, continuous diffusional partitioning between the parent β- and product α-phases during isothermal annealing drives their compositions towards equilibrium. For a given alloy composition, the decomposition mechanism is strongly temperature dependent, which would be expected for homogeneous precipitation via the compositional fluctuation-mediated mechanism but not necessarily for one based on classical nucleation theory. The applicability of this mechanism to phase transformations in general is noted. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRECIPITATION (Chemistry) KW - TITANIUM alloys KW - PHASE transformations (Physics) KW - THERMODYNAMICS KW - TEMPERATURE effect KW - NUCLEATION KW - Atom probe tomography (APT) KW - Nucleation of phase transformations KW - Precipitation KW - Thermodynamics KW - Titanium alloys N1 - Accession Number: 82108358; Nag, S. 1,2 Zheng, Y. 1 Williams, R.E.A. 1 Devaraj, A. 2 Boyne, A. 1 Wang, Y. 1 Collins, P.C. 1,2 Viswanathan, G.B. 1,3 Tiley, J.S. 3 Muddle, B.C. 4 Banerjee, R. 2 Fraser, H.L. 1; Email Address: fraser@matsceng.ohio-state.edu; Affiliation: 1: Center for the Accelerated Maturation of Materials and Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, USA 2: Center for Advanced Research and Technology and Department of Materials Science and Engineering, University of North Texas, Denton, TX, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH, USA 4: ARC Centre of Excellence for Design in Light Metals, Department of Materials Engineering, Monash University, Victoria 3800, Australia; Source Info: Oct2012, Vol. 60 Issue 18, p6247; Subject Term: PRECIPITATION (Chemistry); Subject Term: TITANIUM alloys; Subject Term: PHASE transformations (Physics); Subject Term: THERMODYNAMICS; Subject Term: TEMPERATURE effect; Subject Term: NUCLEATION; Author-Supplied Keyword: Atom probe tomography (APT); Author-Supplied Keyword: Nucleation of phase transformations; Author-Supplied Keyword: Precipitation; Author-Supplied Keyword: Thermodynamics; Author-Supplied Keyword: Titanium alloys; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.actamat.2012.07.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82108358&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pilchak, A. AU - Porter, W. AU - John, R. T1 - Room temperature fracture processes of a near-α titanium alloy following elevated temperature exposure. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2012/10/15/ VL - 47 IS - 20 M3 - Article SP - 7235 EP - 7253 PB - Springer Science & Business Media B.V. SN - 00222461 AB - Near-α titanium alloys are used at higher temperatures than any other class of titanium alloys. As a consequence of thermal exposure, these components may develop locally elevated oxygen concentrations at the exposed surface which can negatively impact ductility and resistance to fatigue crack initiation. In this work, monotonic and fatigue fracture mechanisms of Ti-6Al-2Sn-4Zr-2Mo-0.1Si samples exposed to laboratory air at 650 °C for 420 h were identified by means of a combination of quantitative tilt fractography, metallographic sectioning, and electron backscatter diffraction. These mechanisms were compared and contrasted with those operative during similar tests performed on material is the as-received condition with uniform oxygen content. While faceted fracture was not observed during quasi-static loading of virgin material, locally elevated concentrations of oxygen near the surfaces of exposed samples were shown to change the fracture mode from ductile, microvoid coalescence to brittle facet formation and grain boundary separation at stresses below the macroscopic yield point. Similar features and an increased propensity for facet formation were observed during cyclic loading of exposed samples. The effects of this time-dependent degradation on monotonic and cyclic properties were discussed in the context of the effect of oxygen on crack initiation and propagation mechanisms. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - FRACTURE mechanics KW - OXYGEN KW - DUCTILITY KW - FRACTOGRAPHY KW - CRYSTAL grain boundaries KW - CYCLIC loads KW - ELECTRONS -- Backscattering N1 - Accession Number: 78322678; Pilchak, A. 1; Email Address: adam.pilchak@wpafb.af.mil Porter, W. John, R. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base 45433 USA; Source Info: Oct2012, Vol. 47 Issue 20, p7235; Subject Term: TITANIUM alloys; Subject Term: FRACTURE mechanics; Subject Term: OXYGEN; Subject Term: DUCTILITY; Subject Term: FRACTOGRAPHY; Subject Term: CRYSTAL grain boundaries; Subject Term: CYCLIC loads; Subject Term: ELECTRONS -- Backscattering; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 19p; Illustrations: 1 Color Photograph, 11 Black and White Photographs, 6 Diagrams, 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1007/s10853-012-6673-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78322678&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cliver, Edward AU - Keer, Norman T1 - Richard Christopher Carrington: Briefly Among the Great Scientists of His Time. JO - Solar Physics JF - Solar Physics Y1 - 2012/10/15/ VL - 280 IS - 1 M3 - Article SP - 1 EP - 31 PB - Springer Science & Business Media B.V. SN - 00380938 AB - We recount the life and career of Richard Christopher Carrington (1826 - 1875) and explore his pivotal relationship with Astronomer Royal George Biddell Airy. Carrington was the pre-eminent solar astronomer of the 19th century. During a ten year span, he determined the position of the Sun's rotation axis and made the following discoveries: i) the latitude variation of sunspots over the solar cycle, ii) the Sun's differential rotation, and iii) the first solar flare (with Hodgson). Due to the combined effects of family responsibilities, failure to secure a funded position in astronomy (reflecting Airy's influence), and ill health, Carrington's productive period ended when he was at the peak of his powers. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCIENTISTS KW - SOLAR cycle KW - SOLAR flares KW - SUNSPOTS KW - ASTRONOMERS KW - CARRINGTON, Richard Christopher KW - AIRY, George Biddell, 1801-1892 N1 - Accession Number: 78322441; Cliver, Edward 1; Email Address: ecliver@nso.edu Keer, Norman 2; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory (AFRL), Sunspot 88349 USA 2: No. 2 Ravens Close Cooden TN39 4TG UK; Source Info: 2012, Vol. 280 Issue 1, p1; Subject Term: SCIENTISTS; Subject Term: SOLAR cycle; Subject Term: SOLAR flares; Subject Term: SUNSPOTS; Subject Term: ASTRONOMERS; People: CARRINGTON, Richard Christopher; People: AIRY, George Biddell, 1801-1892; Number of Pages: 31p; Document Type: Article L3 - 10.1007/s11207-012-0034-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78322441&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ouchen, Fahima AU - Sotzing, Gregory A. AU - Miller, Trisha L. AU - Singh, Kristi M. AU - Telek, Brian A. AU - Lesko, Alyssa C. AU - Aga, Roberto AU - Fehrman-Cory, Emily M. AU - Yaney, Perry P. AU - Grote, James G. AU - Bartsch, Carrie M. AU - Heckman, Emily M. T1 - Modified processing techniques of a DNA biopolymer for enhanced performance in photonics applications. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/10/08/ VL - 101 IS - 15 M3 - Article SP - 153702 PB - American Institute of Physics SN - 00036951 AB - Significant modifications have been made in the processing techniques developed to transform purified, marine-based deoxyribonucleic acid (DNA) into a biopolymer suitable for optical and electronic device fabrication. This technique employs a modified soxhlet-dialysis rinsing process to completely remove excess ionic contaminants from the DNA biopolymer, resulting in a material with greater mechanical stability and enhanced performance reproducibility. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DNA KW - BIOPOLYMERS KW - PHOTONICS KW - DIALYSIS (Chemistry) KW - NUCLEAR magnetic resonance N1 - Accession Number: 82712592; Ouchen, Fahima 1 Sotzing, Gregory A. 2,3 Miller, Trisha L. 4 Singh, Kristi M. 4 Telek, Brian A. 5 Lesko, Alyssa C. 5 Aga, Roberto 6 Fehrman-Cory, Emily M. 5 Yaney, Perry P. 5 Grote, James G. 7 Bartsch, Carrie M. 3 Heckman, Emily M. 3; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469, 2: Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, 3: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 4: UES, Inc., Dayton, Ohio 45432, 5: University of Dayton, Dayton, Ohio 45469, 6: General Dynamics Information Technology, Dayton, Ohio 45431, 7: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433,; Source Info: 10/8/2012, Vol. 101 Issue 15, p153702; Subject Term: DNA; Subject Term: BIOPOLYMERS; Subject Term: PHOTONICS; Subject Term: DIALYSIS (Chemistry); Subject Term: NUCLEAR magnetic resonance; NAICS/Industry Codes: 621492 Kidney Dialysis Centers; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.4758484 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82712592&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brant, A. T. AU - Basun, S. A. AU - Grabar, A. A. AU - Odoulov, S. G. AU - Shumelyuk, A. AU - Giles, N. C. AU - Evans, D. R. T1 - Photoinduced EPR study of Sb2+ ions in photorefractive Sn2P2S6 crystals. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2012/10/08/ VL - 86 IS - 13 M3 - Article SP - 1 EP - 6 SN - 10980121 AB - Single crystals of Sn2P2S6 are both ferroelectric and photorefractive. Antimony (Sb) ions are optically active in this material and play an important role in optimizing the photorefractive response. Electron paramagnetic resonance (EPR) is used to determine the site and charge states of the Sb ions in Sn2P2S6 and to illustrate the photocharging behavior of these ions. In as-grown crystals, Sb3+ ions substitute for Sn2+ ions. A multiline EPR spectrum from Sb2+ ions is observed after exposing a crystal at 30 ? to either 633- or 442-nm laser light. These Sb2+ ions are thermally stable at low temperature after the light is removed. They revert back to Sb3+ ions when the crystal is warmed above 250 ? for a few minutes. The EPR spectrum has 5=1/2 and consists of well-resolved sets of hyperfine lines from 121Sb and 123Sb nuclei. Spin Hamiltonian parameters are obtained from the angular dependence of the spectrum (principal values are 1.810,1.868, and 1.887 for the g matrix and 1404, 1687, and 1849 MHz for the 121Sb hyperfine matrix). These parameters provide evidence that the wave function for the unpaired spin has significant jo-like character and has overlap with neighboring ions. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON paramagnetic resonance KW - PHOTOINDUCED electron transfer KW - ANTIMONY KW - METAL ions KW - PHOTOREFRACTIVE materials KW - TIN compounds KW - CRYSTALS N1 - Accession Number: 83821848; Brant, A. T. 1 Basun, S. A. 1,2,3; Email Address: larry.halliburton@mail.wvu.edu Grabar, A. A. 4 Odoulov, S. G. 5 Shumelyuk, A. 5 Giles, N. C. 1 Evans, D. R. 3,6; Affiliation: 1: Department of Engineering Physics, Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433, US 2: Azimuth Corporation, 4134 Linden Avenue, Suite 300, Dayton, Ohio 45431, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 4: Institute of Solid State Physics and Chemistry, Uzhgorod National University, 88 000 Uzhgorod, Ukraine 5: Institute of Physics, National Academy of Sciences, 03 650 Kiev, Ukraine 6: Department of Physics, West Virginia University, Morgantown, West Virginia 26506, USA; Source Info: Oct2012, Vol. 86 Issue 13, p1; Subject Term: ELECTRON paramagnetic resonance; Subject Term: PHOTOINDUCED electron transfer; Subject Term: ANTIMONY; Subject Term: METAL ions; Subject Term: PHOTOREFRACTIVE materials; Subject Term: TIN compounds; Subject Term: CRYSTALS; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1103/PhysRevB.86.134109 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83821848&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Yun-Ju AU - Yi, Juan AU - Gao, Galen F. AU - Koerner, Hilmar AU - Park, Kyoungweon AU - Wang, Jian AU - Luo, Kaiyuan AU - Vaia, Richard A. AU - Hsu, Julia W. P. T1 - Low-Temperature Solution-Processed Molybdenum Oxide Nanoparticle Hole Transport Layers for Organic Photovoltaic Devices. JO - Advanced Energy Materials JF - Advanced Energy Materials Y1 - 2012/10// VL - 2 IS - 10 M3 - Article SP - 1193 EP - 1197 SN - 16146832 KW - charge transport KW - electronic structures KW - molybdenum oxide nanoparticles KW - photovoltaic devices KW - thin films N1 - Accession Number: 82211820; Lee, Yun-Ju 1 Yi, Juan 2 Gao, Galen F. 1 Koerner, Hilmar 3,4 Park, Kyoungweon 3,4 Wang, Jian 1 Luo, Kaiyuan 1 Vaia, Richard A. 3 Hsu, Julia W. P. 1; Affiliation: 1: Department of Materials Science and Engineering, University of Texas at Dallas, 800 W. Campbell Rd., Richardson, TX 75080, USA 2: Department of Physics, University of Texas at Dallas, 800 W. Campbell Rd., Richardson, TX 75080, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 4: UES, Inc., Dayton, OH 45432, USA; Source Info: Oct2012, Vol. 2 Issue 10, p1193; Author-Supplied Keyword: charge transport; Author-Supplied Keyword: electronic structures; Author-Supplied Keyword: molybdenum oxide nanoparticles; Author-Supplied Keyword: photovoltaic devices; Author-Supplied Keyword: thin films; Number of Pages: 5p; Document Type: Article L3 - 10.1002/aenm.201200229 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82211820&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Folsom, Thomas C. T1 - MINORITY REPORT: REAL PATENT REFORM, MAYBE LATER - THE AMERICA INVENTS ACT AND THE QUASI-RECODIFICATION SOLUTION. JO - Akron Intellectual Property Journal JF - Akron Intellectual Property Journal Y1 - 2012/10// VL - 6 IS - 2 M3 - Article SP - 179 EP - 300 SN - 19384572 AB - "Congress has not enacted comprehensive patent law reform in nearly 60 years … The need to update our patent laws has been meticulously documented … The [America Invents Act] is designed to establish a more efficient and streamlined patent system that will improve patent quality and limit unnecessary and counterproductive litigation costs" [ABSTRACT FROM AUTHOR] AB - Copyright of Akron Intellectual Property Journal is the property of University of Akron, School of Law and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PATENTS KW - LAW reform KW - INTELLECTUAL property KW - COSTS (Law) KW - UNITED States KW - UNITED States. Congress N1 - Accession Number: 82980986; Folsom, Thomas C. 1; Affiliation: 1: Professor, Regent University School of Law, B.S. United States Air Force Academy; Source Info: 2012, Vol. 6 Issue 2, p179; Subject Term: PATENTS; Subject Term: LAW reform; Subject Term: INTELLECTUAL property; Subject Term: COSTS (Law); Subject Term: UNITED States; Company/Entity: UNITED States. Congress; NAICS/Industry Codes: 541199 All Other Legal Services; NAICS/Industry Codes: 541110 Offices of Lawyers; NAICS/Industry Codes: 921120 Legislative Bodies; Number of Pages: 122p; Illustrations: 1 Illustration; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82980986&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kobaku, Sai P. R. AU - Kota, Arun K. AU - Lee, Duck Hyun AU - Mabry, Joseph M. AU - Tuteja, Anish T1 - Patterned Superomniphobic-Superomniphilic Surfaces: Templates for Site-Selective Self-Assembly. JO - Angewandte Chemie International Edition JF - Angewandte Chemie International Edition Y1 - 2012/10// VL - 51 IS - 40 M3 - Article SP - 10109 EP - 10113 SN - 14337851 KW - materials science KW - self-assembly KW - surface chemistry KW - wettability N1 - Accession Number: 80413206; Kobaku, Sai P. R. 1 Kota, Arun K. 2 Lee, Duck Hyun 2 Mabry, Joseph M. 3 Tuteja, Anish 1,2; Affiliation: 1: Department of Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI 48109 (USA) 2: Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109 (USA) 3: Rocket Propulsion Division, Air Force Research Laboratory, Edwards Air Force Base, CA 93524 (USA); Source Info: Oct2012, Vol. 51 Issue 40, p10109; Author-Supplied Keyword: materials science; Author-Supplied Keyword: self-assembly; Author-Supplied Keyword: surface chemistry; Author-Supplied Keyword: wettability; Number of Pages: 5p; Document Type: Article L3 - 10.1002/anie.201202823 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=80413206&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sheng, Qin AU - Guha, Shekhar AU - Gonzalez, Leonel P. T1 - A short note on the asymptotic stability of an oscillation-free eikonal splitting method JO - Applied Mathematics Letters JF - Applied Mathematics Letters Y1 - 2012/10// VL - 25 IS - 10 M3 - Article SP - 1539 EP - 1543 SN - 08939659 AB - Abstract: Different beam propagation methods (BPMs) have been fundamental in modern electromagnetical wave simulations. Challenges of the numerical strategy include the computational efficiency and stability, in particular when highly oscillatory optical waves are present. This paper concerns an eikonal splitting BPM scheme for two-dimensional paraxial Helmholtz equations together with transparent boundary conditions in slowly varying envelope approximations of active laser beams. It is shown that the finite difference method investigated is not only oscillation-free, but also asymptotically stable. This ensures the high efficiency and applicability in highly oscillatory wave applications. [Copyright &y& Elsevier] AB - Copyright of Applied Mathematics Letters is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASYMPTOTIC expansions KW - DIFFERENTIAL equations -- Oscillation theory KW - EIKONAL equation KW - SPLITTING extrapolation method KW - ELECTROMAGNETIC waves KW - HELMHOLTZ equation KW - LASER beams KW - APPROXIMATION theory KW - Asymptotic stability KW - Eikonal approximation KW - Finite difference equations KW - Highly oscillatory waves KW - Splitting method N1 - Accession Number: 77503630; Sheng, Qin 1; Email Address: qin_sheng@baylor.edu Guha, Shekhar 2 Gonzalez, Leonel P. 2; Affiliation: 1: Department of Mathematics, Center for Astrophysics, Space Physics and Engineering Research, Baylor University, Waco, TX 76798-7328, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Oct2012, Vol. 25 Issue 10, p1539; Subject Term: ASYMPTOTIC expansions; Subject Term: DIFFERENTIAL equations -- Oscillation theory; Subject Term: EIKONAL equation; Subject Term: SPLITTING extrapolation method; Subject Term: ELECTROMAGNETIC waves; Subject Term: HELMHOLTZ equation; Subject Term: LASER beams; Subject Term: APPROXIMATION theory; Author-Supplied Keyword: Asymptotic stability; Author-Supplied Keyword: Eikonal approximation; Author-Supplied Keyword: Finite difference equations; Author-Supplied Keyword: Highly oscillatory waves; Author-Supplied Keyword: Splitting method; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.aml.2012.01.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77503630&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Lamison, Kevin R. AU - Guenthner, Andrew J. AU - Mabry, Joseph M. T1 - Water breakthrough pressure of cotton fabrics treated with fluorinated silsesquioxane/fluoroelastomer coatings JO - Applied Surface Science JF - Applied Surface Science Y1 - 2012/10// VL - 258 IS - 24 M3 - Letter SP - 10205 EP - 10208 SN - 01694332 AB - Abstract: Breakthrough pressure is an important parameter associated with the performance of water-resistant fabrics. Hydrostatic testing has been utilized to experimentally determine the breakthrough pressure of commercial cotton fabrics treated with various combinations of octakis(1H,1H,2H,2H-perfluorodecyl) polyhedral oligomeric silsesquioxane (F-POSS), a compound with the lowest reported solid surface energy, and the commercial fluoroelastomer, Tecnoflon®. The breakthrough pressure values (amounting to a few inches of water) were found to be similar to predicted values based on the geometry of the samples and the surface energy of the components. The theoretical predictions, however, do not explain all differences observed among samples, such as the fact that a single dip coating with both F-POSS and Tecnoflon® produced a higher breakthrough pressure than a single dip coating in either F-POSS or Tecnoflon®, or sequential dip coating (in either order) of the two components. SEM analysis of the coated fabrics indicated that coatings were conformal at the microscale, but did result in sub-micron scale roughness. Although this roughness may help to increase the contact angles with water, the breakthrough pressure appeared to be primarily determined by the geometry of the individual filaments. [Copyright &y& Elsevier] AB - Copyright of Applied Surface Science is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRESSURE KW - COTTON textiles KW - FLUORINATION KW - SILICONES KW - SURFACE coatings KW - PARAMETER estimation KW - SURFACE energy KW - SURFACE roughness KW - Breakthrough pressure KW - Dip-coating KW - F-POSS KW - Superhydrophobic N1 - Accession Number: 78429615; Lamison, Kevin R. 1; Email Address: kevin.lamison@gmail.com Guenthner, Andrew J. 2 Mabry, Joseph M. 2; Affiliation: 1: ERC Incorporated, Air Force Research Laboratory, Edwards AFB, CA 93524,United States 2: Propulsion Directorate, Air Force Research Laboratory, Edwards AFB, CA 93524,United States; Source Info: Oct2012, Vol. 258 Issue 24, p10205; Subject Term: PRESSURE; Subject Term: COTTON textiles; Subject Term: FLUORINATION; Subject Term: SILICONES; Subject Term: SURFACE coatings; Subject Term: PARAMETER estimation; Subject Term: SURFACE energy; Subject Term: SURFACE roughness; Author-Supplied Keyword: Breakthrough pressure; Author-Supplied Keyword: Dip-coating; Author-Supplied Keyword: F-POSS; Author-Supplied Keyword: Superhydrophobic; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 313220 Narrow Fabric Mills and Schiffli Machine Embroidery; Number of Pages: 4p; Document Type: Letter L3 - 10.1016/j.apsusc.2012.06.064 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78429615&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mouis, A.G. AU - Menon, A. AU - Katta, V. AU - Litzinger, T.A. AU - Linevsky, M. AU - Santoro, R.J. AU - Zeppieri, S.P. AU - Colket, M.B. AU - Roquemore, W.M. T1 - Effects of m-xylene on aromatics and soot in laminar, N2-diluted ethylene co-flow diffusion flames from 1 to 5atm JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/10// VL - 159 IS - 10 M3 - Article SP - 3168 EP - 3178 SN - 00102180 AB - Abstract: Experimental data and model results are presented for the effects of m-xylene on aromatic species and soot in a nitrogen-diluted ethylene flame over a range of pressures from 1 to 5atm. The experimental approach was designed to investigate the effects of m-xylene as a perturbation to a base flame by keeping the amount of carbon added as m-xylene to 5% or less. The experimental results indicate that the maximum soot levels and those of small (1 or 2 rings) and large (3 or more ring) aromatic species are roughly first order with respect to the amount of m-xylene added. A chemical kinetic model was formulated, integrated into a 2-D modeling code, and used to simulate the effects of m-xylene addition and pressure on aromatic species and soot. The modeling results capture the general trends in concentration of soot and small aromatics as m-xylene concentration and pressure are varied. However, the model under-predicts the effect of m-xylene concentration and pressure on soot compared to the experimental results. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - XYLENE KW - SOOT KW - FLAME KW - LAMINAR flow KW - MATHEMATICAL models KW - ETHYLENE KW - NITROGEN KW - DIFFUSION KW - PRESSURE KW - Aromatics KW - Ethylene KW - m-Xylene KW - Pressure KW - Soot N1 - Accession Number: 79338476; Mouis, A.G. 1 Menon, A. 1 Katta, V. 2 Litzinger, T.A. 1; Email Address: TAL2@psu.edu Linevsky, M. 1 Santoro, R.J. 1 Zeppieri, S.P. 3 Colket, M.B. 3 Roquemore, W.M. 4; Affiliation: 1: Penn State University, University Park, PA 16802, USA 2: Innovative Scientific Solutions Inc., Dayton, OH 45440, USA 3: United Technologies Research Center, East Hartford, CT 06118, USA 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Oct2012, Vol. 159 Issue 10, p3168; Subject Term: XYLENE; Subject Term: SOOT; Subject Term: FLAME; Subject Term: LAMINAR flow; Subject Term: MATHEMATICAL models; Subject Term: ETHYLENE; Subject Term: NITROGEN; Subject Term: DIFFUSION; Subject Term: PRESSURE; Author-Supplied Keyword: Aromatics; Author-Supplied Keyword: Ethylene; Author-Supplied Keyword: m-Xylene; Author-Supplied Keyword: Pressure; Author-Supplied Keyword: Soot; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.combustflame.2012.03.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79338476&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Crouse, Christopher A. AU - Pierce, Christian J. AU - Spowart, Jonathan E. T1 - Synthesis and reactivity of aluminized fluorinated acrylic (AlFA) nanocomposites JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/10// VL - 159 IS - 10 M3 - Article SP - 3199 EP - 3207 SN - 00102180 AB - Abstract: Fluorinated materials, such as poly(tetrafluoroethylene) and its co-polymers, have attracted significant interest throughout the energetic materials community due to their strong reactivity with aluminum powders. Herein, we report the synthesis of a novel composite material produced through the in situ polymerization of 1H,1H,2H,2H-perfluorodecyl methacrylate in the presence of aluminum nanoparticles which have been previously functionalized with phosphoric acid 2-hydroxyethyl methacrylate ester to promote chemical integration into the polymer matrix. These materials, which we have termed aluminized fluorinated acrylic (AlFA) composites, have been prepared with particle contents ranging from 10% to 70% by weight. At particle loadings of 60wt.% or less, the AlFA composites exhibited thermoplastic behavior and were able to be processed by melt extrusion. The AlFA-50 composite demonstrated the highest reactivity (most intense flame and shortest time to achieve complete deflagration) during air combustion experiments performed on consolidated pellets. Chemical analysis of the char indicated the presence of AlF3, in addition to Al2O3, Al4C3 and residual Al, indicating that reaction with the fluoropolymer matrix does result in fluorination of the aluminum during the deflagration, however, this mechanism competes kinetically with air oxidation and carbide formation at higher particle loadings. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOCOMPOSITE materials -- Synthesis KW - REACTIVITY (Chemistry) KW - FLUORINATION KW - POLYTEF KW - COPOLYMERS KW - ALUMINUM powder KW - COMPOSITE materials KW - POLYMERIZATION KW - Aluminum KW - Aluminum nanoparticles KW - Fluoropolymer KW - Reactive composites N1 - Accession Number: 79338479; Crouse, Christopher A. 1,2; Email Address: christopher.crouse.ctr@wpafb.af.mil Pierce, Christian J. 1 Spowart, Jonathan E. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, United States 2: UES, Inc., Dayton, OH 45432, United States; Source Info: Oct2012, Vol. 159 Issue 10, p3199; Subject Term: NANOCOMPOSITE materials -- Synthesis; Subject Term: REACTIVITY (Chemistry); Subject Term: FLUORINATION; Subject Term: POLYTEF; Subject Term: COPOLYMERS; Subject Term: ALUMINUM powder; Subject Term: COMPOSITE materials; Subject Term: POLYMERIZATION; Author-Supplied Keyword: Aluminum; Author-Supplied Keyword: Aluminum nanoparticles; Author-Supplied Keyword: Fluoropolymer; Author-Supplied Keyword: Reactive composites; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.combustflame.2012.03.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79338479&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rau, Ileana AU - Grote, James G. AU - Kajzar, Francois AU - Pawlicka, Agnieszka T1 - DNA – novel nanomaterial for applications in photonics and in electronics T2 - ADN – nanomatériau nouveau pour les applications en photonique et en électronique JO - Comptes Rendus Physique JF - Comptes Rendus Physique Y1 - 2012/10// VL - 13 IS - 8 M3 - Article SP - 853 EP - 864 SN - 16310705 AB - Abstract: Functionalization with surfactants and with active molecules of deoxyribonucleic acid (DNA), thin film processing as well as their nonlinear optical and electrical properties are reviewed and discussed. On the basis of a quantum three level model, we show that the anomalous concentration variation of cubic susceptibility in thin films of DNA–CTMA complexes doped with Disperse Red 1 chromophore can be explained by the concentration variation of two-photon resonance contribution. We show also that the DNA complexes, plasticized with glycerol and adequately doped can be processed into self standing conducting membranes with a high electrical conductivity. The measured ionic conductivity at room temperature, depending on dopant used and its concentration, is in the range of – and increases linearly as a function of temperature, reaching at 358 K for the most conducting sample, obeying predominantly the Arrhenius law. Practical applications of DNA complexes are also described and discussed. (English) [Copyright &y& Elsevier] AB - Résumé: Fonctionnalisation de lʼacide désoxyribonucléique (ADN) avec des composées tensioactifs et avec les molécules actives, la fabrication des films minces ainsi que leurs propriétés optiques linéaires, non linéaires et électriques sont examinées et discutées. Avec lʼaide dʼun modèle quantique à trois niveaux nous montrons que la variation anormale de la susceptibilité cubique en fonction de la concentration du chromophore dans des films minces faits à partir des complexes ADN–CTMA, dopés avec le Disperse Red 1, peut être expliquée par le déplacement de la bande dʼabsorption. Nous décrivons également comment lʼADN peut être plastifié et transformé en membranes conductrices. La conductivité électrique de ces membranes peut être contrôlée par un dopage adéquat avec des ions ou polymères conducteurs. Les membranes obtenues montrent une conductivité électrique élevée. La conductivité, mesurée à lʼambiante, varies entre de et en fonction du dopant utilisé. Elle croit avec la température, pour attendre ca , dans le meilleur cas, à 358 K, en obéissant essentiellement la loi dʼArrhénius. Les applications pratiques des complexes dérivés de lʼADN sont également décrites et discutés. 1 GV are observed at 1 AU as ground-level events (GLEs). They are considered to be extreme cases of gradual SEP events, produced by shocks driven by wide and fast CMEs that are usually associated with long-duration (>1 hour) soft X-ray (SXR) flares. However, some large gradual SEP events, including GLEs, are associated with flares of short-duration (<1 hour) timescales comparable to those of flares seen with impulsive, low-energy SEP events with enhanced charge states, heavy-element abundances, and e/p ratios. The association of some GLEs with short-duration SXR events challenges us to understand the GLE event-to-event variation with SXR durations and whether it truly reflects the nature of the particle acceleration processes or simply the characteristics of the solar regions from which large, fast CMEs arise. We examine statistically the associated flare, active region (AR), and CME characteristics of ∼40 GLEs observed since 1976 to determine how the GLE e/p and Fe/O ratios, each measured in two energy ranges, depend on those characteristics. The abundance ratios trend weakly to lower, more coronal, and less scattered values with increasing flare timescales, thermal and nonthermal peak fluxes, and measures of source AR sizes. These results and the wide range of solar longitude connections for GLEs with high abundance ratios argue against a significant role for flare effects in the GLEs. We suggest that GLE SEPs are accelerated predominately in CME-driven shocks and that a coupling of flare size and timescales with CME properties could explain the SEP abundance correlations with flare properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Space Science Reviews is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR flares KW - SOLAR energetic particles KW - SOLAR radio emission KW - INTERPLANETARY medium KW - PARTICLE acceleration KW - X-rays KW - SUN KW - Acceleration of particles KW - Interplanetary medium KW - Sun: coronal mass ejections KW - Sun: particle emission KW - Sun: radio radiation N1 - Accession Number: 80730776; Kahler, S. 1; Email Address: stephen.kahler@hanscom.af.mil Cliver, E. 1; Email Address: afrl.rvb.pa@hanscom.af.mil Tylka, A. 2 Dietrich, W. 3; Affiliation: 1: Air Force Research Laboratory, RVBXS, 29 Randolph Rd. Hanscom AFB 01731-3010 USA 2: Space Science Division, Naval Research Laboratory, Code 7671 Washington 20375 USA 3: Praxis, Inc., Alexandria 22303 USA; Source Info: Oct2012, Vol. 171 Issue 1-4, p121; Subject Term: SOLAR flares; Subject Term: SOLAR energetic particles; Subject Term: SOLAR radio emission; Subject Term: INTERPLANETARY medium; Subject Term: PARTICLE acceleration; Subject Term: X-rays; Subject Term: SUN; Author-Supplied Keyword: Acceleration of particles; Author-Supplied Keyword: Interplanetary medium; Author-Supplied Keyword: Sun: coronal mass ejections; Author-Supplied Keyword: Sun: particle emission; Author-Supplied Keyword: Sun: radio radiation; Number of Pages: 19p; Illustrations: 3 Charts, 5 Graphs; Document Type: Article L3 - 10.1007/s11214-011-9768-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=80730776&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lavigne, Jill E. AU - McCarthy, Major Michael AU - Chapman, Richard AU - Petrilla, Allison AU - Knox, Kerry L. T1 - Exposure to Prescription Drugs Labeled for Risk of Adverse Effects of Suicidal Behavior or Ideation among 100 Air Force Personnel who Died by Suicide, 2006-2009. JO - Suicide & Life-Threatening Behavior JF - Suicide & Life-Threatening Behavior Y1 - 2012/10// VL - 42 IS - 5 M3 - Article SP - 561 EP - 566 SN - 03630234 AB - Prescription drugs for many indications are labeled with warnings for potential risk of suicidal ideation or behavior. Exposures to prescription drugs labeled for adverse effects of suicidal behavior or ideation among 100 Air Force personnel who died by suicide between 2006 and 2009 are described. Air Force registry data were linked to administrative prescription data. Descriptive statistics illustrate utilization: 89 personnel had a prescription history, 35 filled at least one prescription labeled with a warning, 26 had antidepressants on hand at death, and 2 died by drug overdose. Most airmen were not exposed to any prescriptions labeled for risk of suicidal ideation or behavior prior to death by suicide. [ABSTRACT FROM AUTHOR] AB - Copyright of Suicide & Life-Threatening Behavior is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DRUGS -- Side effects KW - SUICIDAL behavior KW - SUICIDAL ideation KW - AIRMEN KW - ANTIDEPRESSANTS KW - DRUG overdose N1 - Accession Number: 80027153; Lavigne, Jill E. 1 McCarthy, Major Michael 1 Chapman, Richard 1 Petrilla, Allison 1 Knox, Kerry L. 1; Affiliation: 1: Jill E. Lavigne, Wegmans School of Pharmacy, St. John Fisher College, Rochester, NY; Major Michael McCarthy, United States Air Force, Pentagon, Washington, DC; Richard Chapman and Allison Petrilla, IMS Inc., Alexandria, VA and Kerry L. Knox, Department of Psychiatry, University of Rochester, Rochester, NY, USA.; Source Info: Oct2012, Vol. 42 Issue 5, p561; Subject Term: DRUGS -- Side effects; Subject Term: SUICIDAL behavior; Subject Term: SUICIDAL ideation; Subject Term: AIRMEN; Subject Term: ANTIDEPRESSANTS; Subject Term: DRUG overdose; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; NAICS/Industry Codes: 325411 Medicinal and Botanical Manufacturing; Number of Pages: 6p; Illustrations: 2 Charts; Document Type: Article L3 - 10.1111/j.1943-278X.2012.00112.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=80027153&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, A. Matthew AU - Uskov, D. B. AU - Fanto, M. L. AU - Ying, L. H. AU - Kaplan, L. T1 - Proposed experiment in two-qubit linear optical photonic gates for maximal success rates. JO - Journal of Physics: B Atomic Molecular & Optical Physics JF - Journal of Physics: B Atomic Molecular & Optical Physics Y1 - 2012/09/28/ VL - 45 IS - 18 M3 - Article SP - 1 EP - 6 SN - 09534075 AB - Here we propose an experiment in linear optical quantum computing (LOQC) using the framework first developed by Knill, Laflamme and Milburn. This experiment will test the ideas of the authors' previous work on imperfect LOQC gates using number-resolving photon detectors. We suggest a relatively simple physical apparatus capable of producing CZ gates with controllable fidelity less than 1 and success rates higher than the current theoretical maximum (S = 2/27) for perfect fidelity. These experimental setups are within the reach of many experimental groups and would provide an interesting experiment in photonic quantum computing. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: B Atomic Molecular & Optical Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTONICS KW - QUBITS KW - QUANTUM theory KW - PHOTON detectors KW - GATE array circuits KW - LINEAR systems N1 - Accession Number: 82196196; Smith, A. Matthew 1,2; Email Address: amos.matthew.smith.ctr@rl.af.mil Uskov, D. B. 1,3 Fanto, M. L. 2 Ying, L. H. 1 Kaplan, L. 1; Affiliation: 1: Department of Physics and Engineering Physics, Tulane University, New Orleans, LA 70118, USA 2: Air Force Research Laboratory, Information Directorate, 525 Brooks Road, Rome, NY 13440, USA 3: Department of Mathematics and Natural Science, Brescia University, Owensboro, KY 42301, USA; Source Info: 9/28/2012, Vol. 45 Issue 18, p1; Subject Term: PHOTONICS; Subject Term: QUBITS; Subject Term: QUANTUM theory; Subject Term: PHOTON detectors; Subject Term: GATE array circuits; Subject Term: LINEAR systems; Number of Pages: 6p; Document Type: Article L3 - 10.1088/0953-4075/45/18/185502 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82196196&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shumaker, J.A. AU - McClung, A.J.W. AU - Baur, J.W. T1 - Synthesis of high temperature polyaspartimide-urea based shape memory polymers JO - Polymer JF - Polymer Y1 - 2012/09/28/ VL - 53 IS - 21 M3 - Article SP - 4637 EP - 4642 SN - 00323861 AB - Abstract: Thermally activated shape memory polymers (SMPs) have attracted great interest in recent years for application in adaptive shape-changing (morphing) aero structures. However, these components require materials with transition temperatures well above the glass transition temperatures of most widely available SMPs while also maintaining processability and property tailorability. In the present study, a series of novel polyaspartimide-urea based polymers are synthesized and characterized. The glass transition temperature and shape memory properties are varied using a diisocyanate resin creating a urea crosslinking moiety between the polyaspartimide chains. Overall, a family of high temperature SMPs was synthesized and characterized showing high thermal stability (>300 °C), toughness, strong shape memory effects, and tailorable properties. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UREA KW - POLYMERIZATION KW - SHAPE memory polymers KW - HIGH temperatures KW - CHEMICAL structure KW - GLASS transition temperature KW - Morphing KW - Shape memory polymer KW - Thermoset N1 - Accession Number: 80181601; Shumaker, J.A. 1,2 McClung, A.J.W. 2,3 Baur, J.W. 2; Email Address: Jeffery.baur@wpafb.af.mil; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0060, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH 45433, USA 3: National Research Council, AFRL, Wright-Patterson AFB, OH 45433, USA; Source Info: Sep2012, Vol. 53 Issue 21, p4637; Subject Term: UREA; Subject Term: POLYMERIZATION; Subject Term: SHAPE memory polymers; Subject Term: HIGH temperatures; Subject Term: CHEMICAL structure; Subject Term: GLASS transition temperature; Author-Supplied Keyword: Morphing; Author-Supplied Keyword: Shape memory polymer; Author-Supplied Keyword: Thermoset; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.polymer.2012.08.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=80181601&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anderson, Kyle D. AU - Weber, Robert B. AU - McConney, Michael E. AU - Jiang, Hao AU - Bunning, Timothy J. AU - Tsukruk, Vladimir V. T1 - Responsive plasma polymerized ultrathin nanocomposite films JO - Polymer JF - Polymer Y1 - 2012/09/28/ VL - 53 IS - 21 M3 - Article SP - 4686 EP - 4693 SN - 00323861 AB - Abstract: The plasma polymerization of NIPAAM and titanium isopropoxide monomers into responsive ultrathin films with responsive optical properties using plasma enhanced chemical vapor deposition is reported. The composite ultrathin films possess a large window for potential changes in their refractive index from 1.60 to 1.95. We demonstrated that these polymer films exhibit fast (transition time below 2 s), large, reversible, and repeatable changes to their thickness and refractive index as a function of periodic environmental humidity changes. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA polymerization KW - NANOCOMPOSITE materials KW - TITANIUM compounds KW - THIN films -- Optical properties KW - REFRACTIVE index KW - THICKNESS measurement KW - Co-polymerization KW - NIPAAM KW - Plasma polymerization KW - Responsive films KW - Tunable optical properties N1 - Accession Number: 80181607; Anderson, Kyle D. 1 Weber, Robert B. 1 McConney, Michael E. 2 Jiang, Hao 2 Bunning, Timothy J. 2 Tsukruk, Vladimir V. 1; Email Address: vladimir@mse.gatech.edu; Affiliation: 1: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433-7702, United States; Source Info: Sep2012, Vol. 53 Issue 21, p4686; Subject Term: PLASMA polymerization; Subject Term: NANOCOMPOSITE materials; Subject Term: TITANIUM compounds; Subject Term: THIN films -- Optical properties; Subject Term: REFRACTIVE index; Subject Term: THICKNESS measurement; Author-Supplied Keyword: Co-polymerization; Author-Supplied Keyword: NIPAAM; Author-Supplied Keyword: Plasma polymerization; Author-Supplied Keyword: Responsive films; Author-Supplied Keyword: Tunable optical properties; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.polymer.2012.08.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=80181607&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guenthner, Andrew J. AU - Lamison, Kevin R. AU - Lubin, Lisa M. AU - Haddad, Timothy S. AU - Mabry, Joseph M. T1 - Hansen Solubility Parametersfor Octahedral OligomericSilsesquioxanes. JO - Industrial & Engineering Chemistry Research JF - Industrial & Engineering Chemistry Research Y1 - 2012/09/26/ VL - 51 IS - 38 M3 - Article SP - 12282 EP - 12293 SN - 08885885 AB - The Hansen Solubility Parameters (HSP) for several polyhedraloligomericsilsesquioxane (POSS) compounds were successfully determined, demonstratingthe applicability of the HSP approach for selected types of organic–inorganiccompounds. As commonly practiced with organic polymers, a set of simple“pass/fail” tests for complete solubility at a fixedconcentration (100 mg/mL) was conducted for an array of five octamericPOSS compounds, octa(phenethyl), octa(styrenyl), octa(isobutyl), octakis(hexafluoroisobutyl), and (1-naphthyl)heptaphenyl),and 45 test solvents. Group contributions for the octameric POSS cagewere determined using three different approaches, which produced similarresults. The best cage contribution estimate for the dispersive, polar,and hydrogen-bonding components δD, δP,, and δHof the total solubility parameter was determinedto be δD= 22 (J/cc)1/2, δP= 19 (J/cc)1/2, and δH= 15 (J/cc)1/2, with an estimated uncertainty of approximately 5 (J/cc)1/2. The utility of the HSP approach was demonstrated by successfullyidentifying mixtures of poor solvents that provided significantlyenhanced solubility for octa(isobutyl) POSS, andby successfully estimating the HSP of octakis(trifluoropropyl) POSSfrom group contributions derived solely from aromatic POSS compounds. [ABSTRACT FROM AUTHOR] AB - Copyright of Industrial & Engineering Chemistry Research is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLUBILITY KW - OLIGOMERIZATION KW - INORGANIC compounds KW - PHENETHYLAMINES KW - HYDROGEN bonding KW - AROMATIC compounds KW - POLYMERS KW - ORGANIC compounds KW - ESTIMATION theory N1 - Accession Number: 80433001; Guenthner, Andrew J. 1 Lamison, Kevin R. 1 Lubin, Lisa M. 1 Haddad, Timothy S. 1 Mabry, Joseph M. 1; Affiliation: 1: †Propulsion Directorate,Air Force Research Laboratory, Edwards AFB, California93524, United States; Source Info: Sep2012, Vol. 51 Issue 38, p12282; Subject Term: SOLUBILITY; Subject Term: OLIGOMERIZATION; Subject Term: INORGANIC compounds; Subject Term: PHENETHYLAMINES; Subject Term: HYDROGEN bonding; Subject Term: AROMATIC compounds; Subject Term: POLYMERS; Subject Term: ORGANIC compounds; Subject Term: ESTIMATION theory; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=80433001&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Kyung Min AU - Koerner, Hilmar AU - Wang, David H. AU - Tan, Loon-Seng AU - White, Timothy J. AU - Vaia, Richard A. T1 - Tailoring the PhotomechanicalResponse of Glassy,Azobenzene-Functionalized Polyimides by Physical Aging. JO - Macromolecules JF - Macromolecules Y1 - 2012/09/25/ VL - 45 IS - 18 M3 - Article SP - 7527 EP - 7534 SN - 00249297 AB - Photoresponsive polymers convert a light stimulus inputinto amechanical output (work). Photoinduced conformational changes, suchas within azobenzene, dictate molecular-level distortions that summateinto a macroscopic strain, which often manifests as a shape changeor motion. The transduction of the molecular-level response to a macroscaleeffect is regulated by mesoscopic features, such as chain packing,free volume, and local molecular orderfactors which dependon chemical composition as well as the process history ofthe material. Herein, we demonstrate the ability to widelytailor the photomechanical response of a photoresponsive polymer bymanipulating the energy state of the glass, rather than formulatingnew chemical compositions. Physical aging increases the density ofthe glass, reduces local free volume, and thus reduces the minimain local conformation space, thereby strongly influencing the azobenzenephotochemistry (trans–cis–trans isomerization). Thesubsequent change in the energy landscape of the system reduces thefraction of azobenzene able to undergo reconfiguration as well asincreases the probability that those photoinduced conformations willrelax back to the initial local environment. The result is a tuningof the magnitude of macroscopic strain and the ability to shift fromshape fixing to shape recovery, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOMECHANICAL processes KW - AZOBENZENE KW - POLYIMIDES KW - PHOTOCHEMISTRY KW - ENERGY levels (Quantum mechanics) KW - ISOMERIZATION N1 - Accession Number: 80269813; Lee, Kyung Min 1 Koerner, Hilmar 1 Wang, David H. 1 Tan, Loon-Seng 1 White, Timothy J. 1 Vaia, Richard A. 1; Affiliation: 1: †Materials& ManufacturingDirectorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7750, United States; Source Info: Sep2012, Vol. 45 Issue 18, p7527; Subject Term: PHOTOMECHANICAL processes; Subject Term: AZOBENZENE; Subject Term: POLYIMIDES; Subject Term: PHOTOCHEMISTRY; Subject Term: ENERGY levels (Quantum mechanics); Subject Term: ISOMERIZATION; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=80269813&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Oyerokun, Folusho T. AU - Vaia, Richard A. T1 - Distribution in the GraftingDensity of End-FunctionalizedPolymer Chains Adsorbed onto Nanoparticle Surfaces. JO - Macromolecules JF - Macromolecules Y1 - 2012/09/25/ VL - 45 IS - 18 M3 - Article SP - 7649 EP - 7659 SN - 00249297 AB - We have developed a simple model to quantify the roleof curvatureon the surface composition of polymer–nanoparticle hybridsformed as a result of the adsorption of end-functionalized homopolymerchains onto spherical nanoparticles in dilute polymer solutions. Theanalytic model incorporates relevant contributions from changes inthe translational and conformational entropies of the polymer chains,and the enthalpy gained during adsorption, to derive an expressionfor the distribution of the grafting density as a function of nanoparticlecurvature and solution properties of the end-adsorbing chains. Ourmodel predicts that the grafting density distribution is Gaussian.The mean grafting density is found to increase with increasing nanoparticlecurvature and polymer concentration. However, the degree of polydispersityin the grafting density is also found to increase with curvature,suggesting the near impossibility of synthesizing monodispersed polymer-tetherednanoparticle hybrids via the grafting-to technique as the radius ofthe nanoparticles approaches the unperturbed radius of gyration ofthe polymer chains in the solution. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - SURFACES (Technology) KW - ADSORPTION KW - GAUSSIAN processes KW - ENTROPY KW - DENSITY functionals N1 - Accession Number: 80269793; Oyerokun, Folusho T. 1 Vaia, Richard A. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB,Ohio 45433-7132, United States; Source Info: Sep2012, Vol. 45 Issue 18, p7649; Subject Term: NANOPARTICLES; Subject Term: SURFACES (Technology); Subject Term: ADSORPTION; Subject Term: GAUSSIAN processes; Subject Term: ENTROPY; Subject Term: DENSITY functionals; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=80269793&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wilt, David AU - Stan, Mark T1 - High Efficiency MultijunctionPhotovoltaic Development. JO - Industrial & Engineering Chemistry Research JF - Industrial & Engineering Chemistry Research Y1 - 2012/09/19/ VL - 51 IS - 37 M3 - Article SP - 11931 EP - 11940 SN - 08885885 AB - Photovoltaic energy conversion has demonstrated remarkableimprovementsin performance over the past 60 years. The rate of solar cell efficiencychange has actually increased over the past 20 years as researchershave moved beyond elemental semiconductors to increasingly more sophisticatedmaterials and devices. In addition, significant improvements in materialsquality and deposition technology have further fueled this dramaticimprovement in device performance. Diversifying from silicon to III–Vcompound semiconductor materials has enabled the development of multijunctionsolar cells with 3, 4, and even 6 subcells to achieve ever higherconversion efficiency. For 1-sun space application(s), these III–Vmultijunction cells are demonstrating ∼35% efficiency, whileunder terrestrial concentrated sunlight conditions efficiencies are>42%. This Article will discuss the development of high efficiencyIII–V multijunction solar cells, focusing on recently developedmetamorphic device structures and novel lattice matched approaches. [ABSTRACT FROM AUTHOR] AB - Copyright of Industrial & Engineering Chemistry Research is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR junctions KW - PHOTOVOLTAIC power systems KW - ENERGY conversion KW - ENERGY consumption KW - PERFORMANCE evaluation KW - SOLAR cells N1 - Accession Number: 80124353; Wilt, David 1 Stan, Mark 1; Affiliation: 1: †Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico87117, United States; Source Info: Sep2012, Vol. 51 Issue 37, p11931; Subject Term: SEMICONDUCTOR junctions; Subject Term: PHOTOVOLTAIC power systems; Subject Term: ENERGY conversion; Subject Term: ENERGY consumption; Subject Term: PERFORMANCE evaluation; Subject Term: SOLAR cells; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=80124353&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Teng, Chong AU - Yu, Wenbin AU - Chen, Ming Y. T1 - Variational asymptotic homogenization of temperature-dependent heterogeneous materials under finite temperature changes JO - International Journal of Solids & Structures JF - International Journal of Solids & Structures Y1 - 2012/09/15/ VL - 49 IS - 18 M3 - Article SP - 2439 EP - 2449 SN - 00207683 AB - Abstract: The variational asymptotic method is used to construct a thermomechanical model for homogenizing heterogeneous materials made of temperature-dependent constituents subject to finite temperature changes with the restriction that the strain is small. First, we presented the derivation for a Helmholtz free energy suitable for finite temperature changes using basic thermodynamics concepts. Then we used this energy to construct a thermomechanical micromechanics model, extending our previous work which was restricted to small temperature changes. The new model is implemented in the computer code VAMUCH using the finite element method for the purpose of handling real heterogeneous materials with arbitrary periodic microstructures. A few examples including binary composites, fiber reinforced composites, and particle reinforced composites are used to demonstrate the application of this model and the errors introduced by assuming small temperature changes when they are not necessarily small. [Copyright &y& Elsevier] AB - Copyright of International Journal of Solids & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TEMPERATURE effect KW - INHOMOGENEOUS materials KW - STRAINS & stresses (Mechanics) KW - THERMODYNAMICS KW - MICROMECHANICS KW - MATHEMATICAL models KW - Finite temperature changes KW - Temperature-dependent properties KW - Thermoelasticity KW - VAMUCH KW - Variational asymptotic method N1 - Accession Number: 77733470; Teng, Chong 1 Yu, Wenbin 1; Email Address: wenbin.yu@usu.edu Chen, Ming Y. 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, Utah State University, Logan, UT 80322-4130, USA 2: Air Force Research Laboratory, AFRL/RXBC, Materials & Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7542, USA; Source Info: Sep2012, Vol. 49 Issue 18, p2439; Subject Term: TEMPERATURE effect; Subject Term: INHOMOGENEOUS materials; Subject Term: STRAINS & stresses (Mechanics); Subject Term: THERMODYNAMICS; Subject Term: MICROMECHANICS; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: Finite temperature changes; Author-Supplied Keyword: Temperature-dependent properties; Author-Supplied Keyword: Thermoelasticity; Author-Supplied Keyword: VAMUCH; Author-Supplied Keyword: Variational asymptotic method; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ijsolstr.2012.05.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77733470&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O. AU - Senkova, S. AU - Dimiduk, D. AU - Woodward, C. AU - Miracle, D. T1 - Oxidation behavior of a refractory NbCrMoTaTiZr alloy. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2012/09/15/ VL - 47 IS - 18 M3 - Article SP - 6522 EP - 6534 PB - Springer Science & Business Media B.V. SN - 00222461 AB - Isothermal oxidation behavior of a refractory high-entropy NbCrMoTaTiZr alloy was studied during heating at 1273 K for 100 h in flowing air. Continuous weight gain occurred during oxidation, and the time dependence of the weight gain per unit surface area was described by a parabolic dependence with the time exponent n = 0.6. X-ray diffraction and scanning electron microscopy accompanied by energy-dispersive X-ray spectroscopy showed that the continuous oxide scale was made of complex oxides and only local (on the submicron levels) redistribution of the alloying elements occurred during oxidation. The alloy has a better combination of mechanical properties and oxidation resistance than commercial Nb alloys and earlier reported developmental Nb-Si-Al-Ti and Nb-Si-Mo alloys. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 77384031; Senkov, O.; Email Address: oleg.senkov@wpafb.af.mil Senkova, S. Dimiduk, D. 1 Woodward, C. 1 Miracle, D. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base 45433 USA; Source Info: Sep2012, Vol. 47 Issue 18, p6522; Number of Pages: 13p; Document Type: Article L3 - 10.1007/s10853-012-6582-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77384031&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nandwana, P. AU - Hwang, J.Y. AU - Koo, M.Y. AU - Tiley, J. AU - Hong, S.H. AU - Banerjee, R. T1 - Formation of equiaxed alpha and titanium nitride precipitates in spark plasma sintered TiB/Ti–6Al–4V composites JO - Materials Letters JF - Materials Letters Y1 - 2012/09/15/ VL - 83 M3 - Article SP - 202 EP - 205 SN - 0167577X AB - Abstract: Spark plasma sintered TiB/Ti–6Al–4V composites have been characterized using scanning electron microscopy (SEM), electron backscattered diffraction (EBSD) and transmission electron microscopy (TEM). As-SPS processed composites exhibit a more refined distribution of equiaxed α precipitates as compared to arc-melted composites containing similar volume fraction of TiB precipitates. Additionally, SPS processed composites also show a highly refined distribution of TiN precipitates, as revealed by TEM studies. [Copyright &y& Elsevier] AB - Copyright of Materials Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM nitride KW - PRECIPITATION (Chemistry) KW - PLASMA (Ionized gases) KW - ELECTRIC spark KW - SINTERING KW - TITANIUM-aluminum-vanadium alloys KW - METALLIC composites KW - SCANNING electron microscopy KW - α/β phase KW - Composite KW - Spark plasma sintering KW - Ti–6Al–4V KW - TiB KW - TiN N1 - Accession Number: 78031960; Nandwana, P. 1 Hwang, J.Y. 2 Koo, M.Y. 3 Tiley, J. 4 Hong, S.H. 3 Banerjee, R. 1; Email Address: rajarshi.banerjee@unt.edu; Affiliation: 1: Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203, USA 2: Institute of Advanced Composite Materials, Korea Institute of Science and Technology, Jeonbuk 565‐902, Republic of Korea 3: Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305‐701, Republic of Korea 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH 45433, USA; Source Info: Sep2012, Vol. 83, p202; Subject Term: TITANIUM nitride; Subject Term: PRECIPITATION (Chemistry); Subject Term: PLASMA (Ionized gases); Subject Term: ELECTRIC spark; Subject Term: SINTERING; Subject Term: TITANIUM-aluminum-vanadium alloys; Subject Term: METALLIC composites; Subject Term: SCANNING electron microscopy; Author-Supplied Keyword: α/β phase; Author-Supplied Keyword: Composite; Author-Supplied Keyword: Spark plasma sintering; Author-Supplied Keyword: Ti–6Al–4V; Author-Supplied Keyword: TiB; Author-Supplied Keyword: TiN; NAICS/Industry Codes: 212210 Iron Ore Mining; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.matlet.2012.05.132 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78031960&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miri, Mohammad-Ali AU - Aceves, Alejandro B. AU - Kottos, Tsampikos AU - Kovanis, Vassilios AU - Christodoulides, Demetrios N. T1 - Bragg solitons in nonlinear 'PT-symmetric periodic potentials. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2012/09/15/ VL - 86 IS - 3-B M3 - Article SP - 1 EP - 5 SN - 10502947 AB - It is shown that slow Bragg soliton solutions are possible in nonlinear complex parity-time (VT) symmetric periodic structures. Analysis indicates that the 'PT-symmetric component of the periodic optical refractive index can modify the grating band structure and hence the effective coupling between the forward and backward waves. Starting from a classical modified massive Thirring model, solitary wave solutions are obtained in closed form. The basic properties of these slow solitary waves and their dependence on their respective PT-symmetric gain-loss profile are then explored via numerical simulations [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLITONS KW - NONLINEAR theories KW - SYMMETRY (Mathematics) KW - REFRACTIVE index KW - WAVE equation -- Numerical solutions KW - NUMERICAL analysis KW - ENERGY bands N1 - Accession Number: 83435117; Miri, Mohammad-Ali 1 Aceves, Alejandro B. 2 Kottos, Tsampikos 3 Kovanis, Vassilios 4 Christodoulides, Demetrios N.; Affiliation: 1: CREOL/College of Optics, University of Central Florida, Orlando, Florida 32816, USA 2: Department of Mathematics, Southern Methodist University, Dallas, Texas 75275, USA 3: Department of Physics, Wesleyan University, Middletown, Connecticut 06459, USA 4: Air Force Research Laboratory, Sensors Directorate, Wright Patterson AFB, Ohio 45433, USA; Source Info: Sep2012, Vol. 86 Issue 3-B, p1; Subject Term: SOLITONS; Subject Term: NONLINEAR theories; Subject Term: SYMMETRY (Mathematics); Subject Term: REFRACTIVE index; Subject Term: WAVE equation -- Numerical solutions; Subject Term: NUMERICAL analysis; Subject Term: ENERGY bands; Number of Pages: 5p; Document Type: Article L3 - 10.1103/PhysRevA.86.033801 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83435117&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Solovyov, Vyacheslav F. AU - Li, Qiang AU - Si, Weidong AU - Maiorov, Boris AU - Haugan, Timothy J. AU - MacManus-Driscoll, J. L. AU - Yao, H. AU - Jia, Q. X. AU - Specht, E. D. T1 - Influence of defect-induced biaxial strain on flux pinning in thick YBa2Cu307 layers. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2012/09/15/ VL - 86 IS - 9 M3 - Article SP - 1 EP - 5 SN - 10980121 AB - This work reports a detailed structural study by synchrotron x-ray diffraction of several sets of thick YBa2Cu307 layers. The samples represent recent advances in flux-pinning design, containing various concentrations of artificial pinning centers: (i) BaZr03 nanorods, (ii) BaZr03 nanoparticles, and (iii) Y2O3 nanoparticles. A statistical analysis was performed in order to separate the effects of defect-induced and intrinsic pinning. We report a statistically significant correlation between the orthorhombic distortion of the YBCO matrix and the pinning strength. Our result implies that the in-plane ordering of oxygen ions in the chain positions accounts for approximately 60% of the pinning force. The strain-induced pinning mechanism analysis, based on the Eshelby model of elastically strained composites, predicts that small YBCO grain size is a critical component of a strong pinning architecture that can enable critical current density values approaching the depairing limit. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL defects KW - STRAINS & stresses (Mechanics) KW - FLUX pinning KW - YTTRIUM compounds KW - CRYSTAL structure KW - X-ray diffraction KW - NANOPARTICLES N1 - Accession Number: 83363536; Solovyov, Vyacheslav F. 1 Li, Qiang 1 Si, Weidong 1 Maiorov, Boris 2 Haugan, Timothy J. 3 MacManus-Driscoll, J. L. 4 Yao, H. 5 Jia, Q. X. 2 Specht, E. D. 6; Affiliation: 1: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA 2: Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 4: Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, United Kingdom 5: School of Physical Science and Technology, Soochow University, Suzhou 215006, China 6: Oak Ridge National Laboratory, Oak Ridge Tennessee 37831, USA; Source Info: Sep2012, Vol. 86 Issue 9, p1; Subject Term: CRYSTAL defects; Subject Term: STRAINS & stresses (Mechanics); Subject Term: FLUX pinning; Subject Term: YTTRIUM compounds; Subject Term: CRYSTAL structure; Subject Term: X-ray diffraction; Subject Term: NANOPARTICLES; Number of Pages: 5p; Document Type: Article L3 - 10.1103/PhysRevB.86.094511 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83363536&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Kyung Min AU - White, Timothy J. T1 - Photochemical Mechanismand Photothermal Considerations in the Mechanical Response of Monodomain,Azobenzene-Functionalized Liquid Crystal Polymer Networks. JO - Macromolecules JF - Macromolecules Y1 - 2012/09/11/ VL - 45 IS - 17 M3 - Article SP - 7163 EP - 7170 SN - 00249297 AB - The potential for wireless transduction of input lightenergy into mechanical outputs has led to a reinvigorated pursuitof photomechanical effects in polymeric materials and composites.We report here on factors influencing the photochemical mechanism(and thus the mechanical output) in monodomain azobenzene-functionalizedliquid crystal polymer networks. Through systematic examination ofa representative material with both mechanics and spectroscopic characterizationthe prevalence of the trans–cis and trans–cis–transmechanisms is elucidated. Furthermore, the role of light intensityin generating heat (photothermal effects) is also reported. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOMECHANICAL processes KW - PHOTOCHEMISTRY KW - POLYMER liquid crystals KW - AZOBENZENE KW - SPECTRUM analysis KW - POLYMER networks KW - FLUID mechanics N1 - Accession Number: 79830222; Lee, Kyung Min 1 White, Timothy J. 1; Affiliation: 1: †Materials and Manufacturing Directorate, Air Force Research Laboratory, 3005 Hobson Way Ste.1, Wright-Patterson Air Force Base, Ohio 45433, United States; Source Info: Sep2012, Vol. 45 Issue 17, p7163; Subject Term: PHOTOMECHANICAL processes; Subject Term: PHOTOCHEMISTRY; Subject Term: POLYMER liquid crystals; Subject Term: AZOBENZENE; Subject Term: SPECTRUM analysis; Subject Term: POLYMER networks; Subject Term: FLUID mechanics; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79830222&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Long, Branden AU - Li, Yibo AU - Mandal, Saptarshi AU - Jha, Rashmi AU - Leedy, Kevin T1 - Switching dynamics and charge transport studies of resistive random access memory devices. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/09/10/ VL - 101 IS - 11 M3 - Article SP - 113503 PB - American Institute of Physics SN - 00036951 AB - We report the switching dynamics and charge transport studies on Ru/HfO2/TiOx/Ru resistive random access memory devices in low resistance state (LRS), high resistance state (HRS), and virgin resistance state (VRS). The charge transport in LRS is governed by Ohmic conduction of electrons through local filamentary paths while it is governed by a combination of Frenkel-Poole emission and trap assisted tunneling process in HRS and VRS. The area of the filament in LRS is extracted and related to the compliance current. The thickness of the re-oxidized filament is extracted and related to the reset voltage in HRS. The energy consumed during the reset process was analyzed on the time-scale to experimentally demonstrate joule-heating mediated oxidation dynamics of filament during device reset. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONVOLATILE random-access memory KW - SEMICONDUCTOR storage devices KW - RESISTANCE heating KW - ELECTRIC heating KW - FERROELECTRIC storage cells KW - OXIDATION N1 - Accession Number: 80228014; Long, Branden 1 Li, Yibo 1 Mandal, Saptarshi 1 Jha, Rashmi 1 Leedy, Kevin 2; Affiliation: 1: Department of Electrical Engineering and Computer Science, University of Toledo, Toledo, Ohio 43606, 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433,; Source Info: 9/10/2012, Vol. 101 Issue 11, p113503; Subject Term: NONVOLATILE random-access memory; Subject Term: SEMICONDUCTOR storage devices; Subject Term: RESISTANCE heating; Subject Term: ELECTRIC heating; Subject Term: FERROELECTRIC storage cells; Subject Term: OXIDATION; Number of Pages: 5p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.4749809 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=80228014&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Seversky, L. M. AU - Yin, L. T1 - A Global Parity Measure for Incomplete Point Cloud Data. JO - Computer Graphics Forum JF - Computer Graphics Forum Y1 - 2012/09/10/ VL - 31 IS - 7pt1 M3 - Article SP - 2097 EP - 2106 PB - Wiley-Blackwell SN - 01677055 AB - Shapes with complex geometric and topological features such as tunnels, neighboring sheets, and cavities are susceptible to undersampling and continue to challenge existing reconstruction techniques. In this work we introduce a new measure for point clouds to determine the likely interior and exterior regions of an object. Specifically, we adapt the concept of parity to point clouds with missing data and introduce the parity map, a global measure of parity over the volume. We first examine how parity changes over the volume with respect to missing data and develop a method for extracting topologically correct interior and exterior crusts for estimating a signed distance field and performing surface reconstruction. We evaluate our approach on real scan data representing complex shapes with missing data. Our parity measure is not only able to identify highly confident interior and exterior regions but also localizes regions of missing data. Our reconstruction results are compared to existing methods and we show that our method faithfully captures the topology and geometry of complex shapes in the presence of missing data. [ABSTRACT FROM AUTHOR] AB - Copyright of Computer Graphics Forum is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CLOUD computing KW - COMPUTER graphics KW - COMPUTATIONAL geometry KW - COMPUTER simulation KW - ESTIMATION theory KW - COMPUTER systems KW - COMPARATIVE studies KW - I.3.5 [Computer Graphics]: Computational Geometry and Object Modeling- N1 - Accession Number: 82092455; Seversky, L. M. 1,2 Yin, L. 2; Affiliation: 1: Air Force Research Laboratory, Information Directorate, USA 2: State University of New York at Binghamton, USA; Source Info: Sep2012, Vol. 31 Issue 7pt1, p2097; Subject Term: CLOUD computing; Subject Term: COMPUTER graphics; Subject Term: COMPUTATIONAL geometry; Subject Term: COMPUTER simulation; Subject Term: ESTIMATION theory; Subject Term: COMPUTER systems; Subject Term: COMPARATIVE studies; Author-Supplied Keyword: I.3.5 [Computer Graphics]: Computational Geometry and Object Modeling-; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 518210 Data Processing, Hosting, and Related Services; Number of Pages: 10p; Illustrations: 11 Color Photographs, 1 Chart; Document Type: Article L3 - 10.1111/j.1467-8659.2012.03202.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82092455&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chaudhary, Aakarsh AU - Michael Spottswood, S. AU - Wang, X.Q. AU - Mignolet, Marc P. T1 - Estimation of time to stationarity in geometrically nonlinear structural responses JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2012/09/10/ VL - 331 IS - 19 M3 - Article SP - 4359 EP - 4372 SN - 0022460X AB - Abstract: The determination of the time to stationarity is defined here through the convergence, to its stationary limit, of the nonstationary variance. This function is estimated through Monte Carlo simulations and a two-step, autoregressive-based modeling approach is employed to minimize the effects of randomness introduced by the limited number of simulations that can be carried out. The methodology is applied extensively to nonlinear single-degree-of-freedom models but is also demonstrated on 8-mode reduced order models of clamped–clamped straight and curved beams. In the latter case, it is found that the time to stationarity is strongly dependent on the excitation level, i.e. varying from one case to another by a factor at least larger than 4, thereby emphasizing the interest in estimating it beforehand. It is finally shown that the single-degree-of-freedom results tabulated here may be used for these reduced order models to obtain a first estimate of the time to stationarity. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ESTIMATION theory KW - NONLINEAR theories KW - CONVERGENCE (Technology) KW - MONTE Carlo method KW - DEGREES of freedom KW - MATHEMATICAL models KW - AUTOREGRESSION (Statistics) KW - SIMULATION methods & models N1 - Accession Number: 76610061; Chaudhary, Aakarsh 1; Email Address: aakarsh.chaudhary@asu.edu Michael Spottswood, S. 2; Email Address: stephen.spottswood@wpafb.af.mil Wang, X.Q. 1; Email Address: xiaoquan.wang.1@asu.edu Mignolet, Marc P. 1; Email Address: marc.mignolet@asu.edu; Affiliation: 1: SEMTE, Faculties of Mechanical and Aerospace Engineering, Arizona State University, Tempe, AZ 85287-6106, USA 2: Air Force Research Laboratory, Structural Sciences Center, Wright-Patterson AFB, OH 45433, USA; Source Info: Sep2012, Vol. 331 Issue 19, p4359; Subject Term: ESTIMATION theory; Subject Term: NONLINEAR theories; Subject Term: CONVERGENCE (Technology); Subject Term: MONTE Carlo method; Subject Term: DEGREES of freedom; Subject Term: MATHEMATICAL models; Subject Term: AUTOREGRESSION (Statistics); Subject Term: SIMULATION methods & models; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.jsv.2012.03.038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76610061&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Look, D. C. AU - Droubay, T. C. AU - Chambers, S. A. T1 - Stable highly conductive ZnO via reduction of Zn vacancies. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/09/03/ VL - 101 IS - 10 M3 - Article SP - 102101 EP - 102101-3 PB - American Institute of Physics SN - 00036951 AB - Growth of Ga-doped ZnO by pulsed laser deposition at 200 °C in an ambient of Ar and H2 produces a resistivity of 1.5 × 10-4 Ω-cm, stable to 500 °C. The resistivity can be further reduced to 1.2 × 10-4 Ω-cm by annealing on Zn foil, which reduces the compensating Zn-vacancy acceptor concentration NA to 5 × 1019 cm-3, only 3% of the Ga-donor concentration ND of 1.6 × 1021 cm-3, with ND and NA determined from a degenerate mobility theory. The plasmon-resonance wavelength is only 1060 nm, further bridging the gap between metals and semiconductors. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide KW - GALLIUM (Metal) KW - PULSED laser deposition KW - ELECTRICAL resistivity KW - ANNEALING of metals N1 - Accession Number: 79864612; Look, D. C. 1,2,3 Droubay, T. C. 4 Chambers, S. A. 4; Affiliation: 1: Semiconductor Research Center, Wright State University, Dayton, Ohio, 45435, 2: Wyle Laboratories, Inc, 2601 Mission Point Boulevard, Suite 300, Dayton, Ohio 45431, 3: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 4: Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99352,; Source Info: 9/3/2012, Vol. 101 Issue 10, p102101; Subject Term: ZINC oxide; Subject Term: GALLIUM (Metal); Subject Term: PULSED laser deposition; Subject Term: ELECTRICAL resistivity; Subject Term: ANNEALING of metals; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 1p; Illustrations: 1 Chart, 1 Graph; Document Type: Article L3 - 10.1063/1.4748869 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79864612&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kernion, Samuel J. AU - Ohodnicki, Paul. R. AU - Grossmann, Jane AU - Leary, Alex AU - Shen, Shen AU - Keylin, Vladimir AU - Huth, Joseph F. AU - Horwath, John AU - Lucas, Matthew S. AU - McHenry, Michael E. T1 - Giant induced magnetic anisotropy In strain annealed Co-based nanocomposite alloys. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/09/03/ VL - 101 IS - 10 M3 - Article SP - 102408 EP - 102408-5 PB - American Institute of Physics SN - 00036951 AB - Low loss switching of soft magnetic materials at high frequencies benefits from tuning the induced anisotropy. We show induced anisotropies, Ku, as large as 1.89×104 J/m3, developed by strain annealing of Co-rich nanocomposite alloys. Crystalline phases in this alloy system have large negative magnetostrictive coefficients, leading to anisotropy fields per unit stress over twice those developed in FINEMET. Tunable permeability and reduced thicknesses achieved in this process can mitigate eddy-current losses. Giant induced magnetic anisotropies are discussed in light of models for the micromechanisms of amorphous metal deformation, stress-assisted transformations in the crystallites, and directional pair ordering. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COBALT alloys KW - NANOCOMPOSITE materials KW - ANISOTROPY KW - ANNEALING of metals KW - CRYSTAL structure KW - MAGNETOSTRICTIVE transducers N1 - Accession Number: 79864628; Kernion, Samuel J. 1 Ohodnicki, Paul. R. 1,2 Grossmann, Jane 1 Leary, Alex 1 Shen, Shen 1 Keylin, Vladimir 3 Huth, Joseph F. 3 Horwath, John 4 Lucas, Matthew S. 4,5 McHenry, Michael E. 1; Affiliation: 1: Department of Material Science and Engineering, Carnegie Mellon University, 5000 Forbes Ave., Pittsburgh, Pennsylvania 15213, 2: Chemistry and Surface Science Div., National Energy Technology Laboratory (NETL), 626 Cochrans Mill Rd., Pittsburgh, Pennsylvania 15236, 3: Magnetics, Division of Spang and Co., 110 Delta Drive, Pittsburgh, Pennsylvania 15238, 4: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 5: UTC Inc., 1270 North Fairfield Road, Dayton, Ohio 45432,; Source Info: 9/3/2012, Vol. 101 Issue 10, p102408; Subject Term: COBALT alloys; Subject Term: NANOCOMPOSITE materials; Subject Term: ANISOTROPY; Subject Term: ANNEALING of metals; Subject Term: CRYSTAL structure; Subject Term: MAGNETOSTRICTIVE transducers; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 1p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.4751253 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79864628&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bedford, Nicholas M. AU - Dickerson, Matthew B. AU - Drummy, Lawrence F. AU - Koerner, Hilmar AU - Singh, Kristi M. AU - Vasudev, Milana C. AU - Durstock, Michael F. AU - Naik, Rajesh R. AU - Steckl, Andrew J. T1 - Nanofiber-Based Bulk-Heterojunction Organic Solar Cells Using Coaxial Electrospinning. JO - Advanced Energy Materials JF - Advanced Energy Materials Y1 - 2012/09// VL - 2 IS - 9 M3 - Article SP - 1136 EP - 1144 SN - 16146832 AB - Nanofibers consisting of the bulk heterojunction organic photovoltaic (BHJ-OPV) electron donor-electron acceptor pair poly(3-hexylthiophene):phenyl-C61-butyric acid methyl ester (P3HT:PCBM) are produced through a coaxial electrospinning process. While P3HT:PCBM blends are not directly electrospinnable, P3HT:PCBM-containing fibers are produced in a coaxial fashion by utilizing polycaprolactone (PCL) as an electrospinnable sheath material. Pure P3HT:PCBM fibers are easily obtained after electrospinning by selectively removing the PCL sheath with cyclopentanone (average diameter 120 ± 30 nm). These fibers are then incorporated into the active layer of a BHJ-OPV device, which results in improved short-circuit current densities, fill factors, and power-conversion efficiencies (PCE) as compared to thin-film devices of identical chemical composition. The best-performing fiber-based devices exhibit a PCE of 4.0%, while the best thin-film devices have a PCE of 3.2%. This increase in device performance is attributed to the increased in-plane alignment of P3HT polymer chains on the nanoscale, caused by the electrospun fibers, which leads to increased optical absorption and subsequent exciton generation. This methodology for improving device performance of BHJ-OPVs could also be implemented for other electron donor-electron acceptor systems, as nanofiber formation is largely independent of the PV material. [ABSTRACT FROM AUTHOR] AB - Copyright of Advanced Energy Materials is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - coaxial electrospinning KW - nanofibers KW - organic photovoltaics KW - P3HT:PCBM N1 - Accession Number: 79823862; Bedford, Nicholas M. 1,2 Dickerson, Matthew B. 3 Drummy, Lawrence F. 3 Koerner, Hilmar 3 Singh, Kristi M. 3 Vasudev, Milana C. 3 Durstock, Michael F. 3 Naik, Rajesh R. 3 Steckl, Andrew J. 1; Affiliation: 1: Nanoelectronics Laboratory, Department of Electrical and Computer Engineering, University of Cincinnati, Cincinnati, OH 45221, USA 2: Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, OH, 45221, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH, 45433, USA; Source Info: Sep2012, Vol. 2 Issue 9, p1136; Author-Supplied Keyword: coaxial electrospinning; Author-Supplied Keyword: nanofibers; Author-Supplied Keyword: organic photovoltaics; Author-Supplied Keyword: P3HT:PCBM; Number of Pages: 9p; Document Type: Article L3 - 10.1002/aenm.201100674 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79823862&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tovar-Murray, Darrick AU - Jenifer, Ericka S. AU - Andrusyk, Jara AU - D'Angelo, Ryan AU - Tia King T1 - Racism-Related Stress and Ethnic Identity as Determinants of African American College Students' Career Aspirations. JO - Career Development Quarterly JF - Career Development Quarterly Y1 - 2012/09// VL - 60 IS - 3 M3 - Article SP - 254 EP - 262 PB - Wiley-Blackwell SN - 08894019 AB - Drawing primarily on the construct of psychological buffer, the purpose of this study was to explore the extent to which racism-related stress and ethnic identity are determinants of career aspirations. A total of 163 African American college students from a predominately White Midwestern university participated in the study. A moderation regression analysis was conducted. Results indicate that ethnic identity interacted with racism-related stress (p = .04) to predict career aspirations. In other words, as racism-related stress increases in the context of low identity development, career aspirations decrease. Conversely, as perceived racism increases in the context of high identity development, career aspirations increase. Implications for professionals and future research in the field of career counseling are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Career Development Quarterly is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - African American KW - career aspirations KW - ethnic identity KW - racism-related stress N1 - Accession Number: 82161603; Tovar-Murray, Darrick 1; Email Address: dtovarmu@depaul.edu Jenifer, Ericka S. 2 Andrusyk, Jara 1 D'Angelo, Ryan 1 Tia King 1; Affiliation: 1: College of Education, DePaul University, Chicago 2: Mental Health Clinic, United States Air Force, Goodfellow Air Force Base, San Angelo, Texas; Source Info: Sep2012, Vol. 60 Issue 3, p254; Author-Supplied Keyword: African American; Author-Supplied Keyword: career aspirations; Author-Supplied Keyword: ethnic identity; Author-Supplied Keyword: racism-related stress; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82161603&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Allen, Casey AU - Toulson, Elisa AU - Edwards, Tim AU - Lee, Tonghun T1 - Application of a novel charge preparation approach to testing the autoignition characteristics of JP-8 and camelina hydroprocessed renewable jet fuel in a rapid compression machine JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/09// VL - 159 IS - 9 M3 - Article SP - 2780 EP - 2788 SN - 00102180 AB - Abstract: A variety of new, alternative jet fuels are being considered as replacements for conventional petroleum-derived jet fuels, and the autoignition chemistry of these fuels are of prime interest. However, traditional batch-based premixture preparation approaches used in chemical kinetics studies are burdened by the low volatility of these fuels. In this work, a new charge preparation approach is described and characterized in which a fuel and air premixture is created directly in the test chamber of a rapid compression machine. The approach relies on a fuel injector to load a small quantity of fuel into the test chamber with high resolution. Preparation of the test charge directly in the device rather than in a mixing vessel reduces the mixture pressure, and hence the fuel partial pressure and mixture temperature requirements to avoid thermal decomposition of the fuel. Gas chromatography/mass spectrometry is used to confirm that an accurately known mass of JP-8 jet fuel is injected into the rapid compression machine, and that all components of the fuel are evaporated and homogeneously mixed within 2min of the fuel injection, for temperatures from 105°C to 145°C. Ignition delays for JP-8 in air are measured at low temperatures (670–750K) and low pressures (7 and 10bar) and the measurements are compared with literature data. The autoignition characteristics of the bio-based camelina hydroprocessed renewable jet fuel are also measured and contrasted with those of JP-8. Under similar compressed conditions, the camelina hydroprocessed renewable jet fuel ignition properties are distinct from JP-8, which provides motivation for pursuing new test strategies to elicit the autoignition chemistry of alternative jet fuels and other non-volatile fuels. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JET planes -- Fuel KW - CHEMICAL kinetics KW - CAMELINA KW - MIXTURES KW - MATERIALS -- Compression testing KW - PRESSURE KW - TEMPERATURE effect KW - GAS chromatography/Mass spectrometry (GC-MS) KW - Autoignition KW - Hydroprocessed renewable jet fuel KW - JP-8 KW - Rapid compression machine N1 - Accession Number: 79113796; Allen, Casey 1 Toulson, Elisa 1 Edwards, Tim 2 Lee, Tonghun 1; Email Address: tonghun@msu.edu; Affiliation: 1: Department of Mechanical Engineering, Michigan State University, East Lansing, MI 48824, USA 2: US Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Sep2012, Vol. 159 Issue 9, p2780; Subject Term: JET planes -- Fuel; Subject Term: CHEMICAL kinetics; Subject Term: CAMELINA; Subject Term: MIXTURES; Subject Term: MATERIALS -- Compression testing; Subject Term: PRESSURE; Subject Term: TEMPERATURE effect; Subject Term: GAS chromatography/Mass spectrometry (GC-MS); Author-Supplied Keyword: Autoignition; Author-Supplied Keyword: Hydroprocessed renewable jet fuel; Author-Supplied Keyword: JP-8; Author-Supplied Keyword: Rapid compression machine; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.combustflame.2012.03.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79113796&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rankin, Brent A. AU - Blunck, David L. AU - Katta, Viswanath R. AU - Stouffer, Scott D. AU - Gore, Jay P. T1 - Experimental and computational infrared imaging of bluff body stabilized laminar diffusion flames JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/09// VL - 159 IS - 9 M3 - Article SP - 2841 EP - 2843 SN - 00102180 AB - Abstract: The concept of comparing measured and computed images is extended to the mid-infrared spectrum to provide a non-intrusive technique for studying flames. Narrowband radiation intensity measurements of steady and unsteady bluff body stabilized laminar ethylene diffusion flames are acquired using an infrared camera. Computational infrared images are rendered by solving the radiative transfer equation for parallel lines-of-sight through the flame and using a narrowband radiation model with computed scalar values. Qualitative and quantitative comparisons of the measured and computed infrared images provide insights into the flame stabilization region and beyond. The unique shapes and sizes of the flames observed in the measured and computed infrared images are similar with a few exceptions which are shown to be educational. The important differences occur in the flame stabilization region suggesting improvements in thermal control of the experiment and soot formation and heat loss models. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFRARED imaging KW - DIFFUSION KW - LAMINAR flow KW - FLAME KW - STABILIZING agents KW - COMPARATIVE studies KW - ETHYLENE KW - RADIATIVE transfer KW - Centerbody KW - Flame radiation KW - Flame stabilization KW - Infrared imaging KW - Laminar flames KW - Non-intrusive measurement N1 - Accession Number: 79113802; Rankin, Brent A. 1; Email Address: brankin@purdue.edu Blunck, David L. 2 Katta, Viswanath R. 3 Stouffer, Scott D. 4 Gore, Jay P. 1; Affiliation: 1: Purdue University, 500 Allison Road, West Lafayette, IN 47907, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 3: Innovative Scientific Solutions Inc., 2766 Indian Ripple Road, Dayton, OH 45440, USA 4: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA; Source Info: Sep2012, Vol. 159 Issue 9, p2841; Subject Term: INFRARED imaging; Subject Term: DIFFUSION; Subject Term: LAMINAR flow; Subject Term: FLAME; Subject Term: STABILIZING agents; Subject Term: COMPARATIVE studies; Subject Term: ETHYLENE; Subject Term: RADIATIVE transfer; Author-Supplied Keyword: Centerbody; Author-Supplied Keyword: Flame radiation; Author-Supplied Keyword: Flame stabilization; Author-Supplied Keyword: Infrared imaging; Author-Supplied Keyword: Laminar flames; Author-Supplied Keyword: Non-intrusive measurement; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.combustflame.2012.03.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79113802&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kostka, Stanislav AU - Lynch, Amy C. AU - Huelskamp, Bethany C. AU - Kiel, Barry V. AU - Gord, James R. AU - Roy, Sukesh T1 - Characterization of flame-shedding behavior behind a bluff-body using proper orthogonal decomposition JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/09// VL - 159 IS - 9 M3 - Article SP - 2872 EP - 2882 SN - 00102180 AB - Abstract: Researchers have been interested in bluff-body flame-shedding dynamics and the effects of vortex shedding for the past few decades. The objective of the present study is to quantify various modes of vortex shedding as flames transition from near-blow-off to stable and acoustically coupled conditions. Two modes of shedding, Kelvin–Helmholtz and Von-Karman, play a significant role in flame stability. Previous studies have been limited to visual identification of the contributions from each of these modes without quantitatively addressing the contribution from each mode as the flame transitions from blow-off to a stable or acoustically coupled state. The present study is focused on quantitatively identifying the contribution of various instability modes for three 1.5-in. flame-holder configurations and is performed in an augmentor test rig employing propane and air as fuel and oxidizer, respectively. The quantitative identification of instability modes is performed by implementing proper orthogonal decomposition (POD) on high-speed chemiluminescence imaging for various flame configurations. The application of POD provides an objective means of examining contributions from asymmetric, symmetric, and uncorrelated spatial shedding modes. To determine trends, equivalence ratios are set to 1.1 and then stepped down until blow-off. Acoustically coupled flames are observed to be dominated by contributions from the symmetric shedding mode. As flames decouple from rig acoustics, they exhibit increased combinations of asymmetric and uncorrelated shedding behavior, depending on flow conditions. The methodology can also be extended to other measurement techniques such as high-speed particle-image velocimetry, planar laser-induced fluorescence, and numerical simulations as a means of studying bluff-body flames. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLAME stability KW - ORTHOGONAL decompositions KW - VORTEX shedding KW - QUANTITATIVE research KW - CHEMILUMINESCENCE KW - NUMERICAL analysis KW - SIMULATION methods & models KW - OXIDIZING agents KW - Chemiluminescence KW - Proper orthogonal decomposition (POD) KW - Vortex shedding N1 - Accession Number: 79113805; Kostka, Stanislav 1; Email Address: stanislavkostka@snet.net Lynch, Amy C. 2 Huelskamp, Bethany C. 3 Kiel, Barry V. 2 Gord, James R. 2 Roy, Sukesh 1; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, OH 45431, United States 2: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433, United States 3: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, OH 45440, United States; Source Info: Sep2012, Vol. 159 Issue 9, p2872; Subject Term: FLAME stability; Subject Term: ORTHOGONAL decompositions; Subject Term: VORTEX shedding; Subject Term: QUANTITATIVE research; Subject Term: CHEMILUMINESCENCE; Subject Term: NUMERICAL analysis; Subject Term: SIMULATION methods & models; Subject Term: OXIDIZING agents; Author-Supplied Keyword: Chemiluminescence; Author-Supplied Keyword: Proper orthogonal decomposition (POD); Author-Supplied Keyword: Vortex shedding; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.combustflame.2012.03.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79113805&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yu, Wenbin AU - Blair, Maxwell T1 - GEBT: A general-purpose nonlinear analysis tool for composite beams JO - Composite Structures JF - Composite Structures Y1 - 2012/09// VL - 94 IS - 9 M3 - Article SP - 2677 EP - 2689 SN - 02638223 AB - Abstract: Geometrically Exact Beam Theory (GEBT), a general-purpose tool for nonlinear analysis of composite slender structures, is developed to meet the design challenges associated with future engineering systems featuring highly-flexible slender structures made of composites. GEBT is based on the mixed formulation of the geometric exact beam theory which can capture all geometric nonlinearities due to large deflections and rotations, subject to the strains being small. Coupled with Variational Beam Sectional Analysis (VABS), a general-purpose cross-sectional analysis, GEBT can effectively analyze geometric nonlinear behavior of slender structures having arbitrary cross-sections made of arbitrary materials. [Copyright &y& Elsevier] AB - Copyright of Composite Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPOSITE construction KW - NONLINEAR models (Statistics) KW - STRUCTURAL analysis (Engineering) KW - STRAINS & stresses (Mechanics) KW - CROSS-sectional method KW - MATERIALS science KW - Composite beams KW - Dimensional reduction KW - GEBT KW - Geometrical nonlinear KW - VABS N1 - Accession Number: 76160081; Yu, Wenbin 1 Blair, Maxwell 2; Affiliation: 1: Utah State University, Logan, UT 80322-4130, United States 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7542, United States; Source Info: Sep2012, Vol. 94 Issue 9, p2677; Subject Term: COMPOSITE construction; Subject Term: NONLINEAR models (Statistics); Subject Term: STRUCTURAL analysis (Engineering); Subject Term: STRAINS & stresses (Mechanics); Subject Term: CROSS-sectional method; Subject Term: MATERIALS science; Author-Supplied Keyword: Composite beams; Author-Supplied Keyword: Dimensional reduction; Author-Supplied Keyword: GEBT; Author-Supplied Keyword: Geometrical nonlinear; Author-Supplied Keyword: VABS; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.compstruct.2012.04.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76160081&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Richey, Phyllis A. AU - Klesges, Robert C. AU - Talcott, Gerald W. AU - DeBon, Margaret AU - Womack, Catherine AU - Thomas, Fridtjof AU - Hryshko-Mullen, Ann T1 - Efficacy of a smoking quit line in the military: Baseline design and analysis JO - Contemporary Clinical Trials JF - Contemporary Clinical Trials Y1 - 2012/09// VL - 33 IS - 5 M3 - Article SP - 959 EP - 968 SN - 15517144 AB - Abstract: Thirty percent of all military personnel smoke cigarettes. Because of the negative health consequences and their impact on physical fitness, overall health, and military readiness, the Department of Defense has identified the reduction of tobacco use as a priority of US military forces. This study aims to evaluate the one-year efficacy of a proactive versus reactive smoking quit line in the US military with adjunctive nicotine replacement therapy (NRT) in both groups. This paper reports on the baseline variables of the first 1000 participants randomized, the design, and proposed analysis of the randomized two-arm clinical trial “Efficacy of a Tobacco Quit Line in the Military”. Participants are adult smokers who are Armed Forces Active Duty personnel, retirees, Reservist, National Guard and family member healthcare beneficiaries. All participants are randomized to either the Counselor Initiated (proactive) group, receiving 6 counseling sessions in addition to an 8-week supply of NRT, or the Self-Paced (reactive) group, in which they may call the quit line themselves to receive the same counseling sessions, in addition to a 2-week supply of NRT. The primary outcome measure of the study is self-reported smoking abstinence at 1-year follow-up. Results from this study will be the first to provide evidence for the efficacy of an intensive Counselor Initiated quit line with provided NRT in military personnel and could lead to dissemination throughout the US Air Force, the armed forces population as a whole and ultimately to civilian personnel that do not have ready access to preventive health services. [Copyright &y& Elsevier] AB - Copyright of Contemporary Clinical Trials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SMOKING cessation KW - ARMED Forces KW - PHYSICAL fitness KW - MILITARY readiness KW - NICOTINE replacement therapy KW - OUTCOME assessment (Medical care) KW - UNITED States KW - Cigarette smoking KW - Military KW - Proactive intervention KW - Randomized controlled clinical trial KW - Smoking cessation intervention KW - Tobacco quit lines N1 - Accession Number: 78145856; Richey, Phyllis A. 1; Email Address: prichey@uthsc.edu Klesges, Robert C. 1 Talcott, Gerald W. 1 DeBon, Margaret 1 Womack, Catherine 1 Thomas, Fridtjof 1 Hryshko-Mullen, Ann 2; Affiliation: 1: University of Tennessee Health Science Center, United States 2: United States Air Force, Wilford Hall Medical Ctr., United States; Source Info: Sep2012, Vol. 33 Issue 5, p959; Subject Term: SMOKING cessation; Subject Term: ARMED Forces; Subject Term: PHYSICAL fitness; Subject Term: MILITARY readiness; Subject Term: NICOTINE replacement therapy; Subject Term: OUTCOME assessment (Medical care); Subject Term: UNITED States; Author-Supplied Keyword: Cigarette smoking; Author-Supplied Keyword: Military; Author-Supplied Keyword: Proactive intervention; Author-Supplied Keyword: Randomized controlled clinical trial; Author-Supplied Keyword: Smoking cessation intervention; Author-Supplied Keyword: Tobacco quit lines; NAICS/Industry Codes: 713940 Fitness and Recreational Sports Centers; NAICS/Industry Codes: 621990 All other ambulatory health care services; NAICS/Industry Codes: 621999 All Other Miscellaneous Ambulatory Health Care Services; NAICS/Industry Codes: 928110 National Security; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.cct.2012.04.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78145856&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wertz, J. AU - Shen, M.-H.H. AU - Scott-Emuakpor, O. AU - George, T. AU - Cross, C. T1 - An Energy-Based Torsional-Shear Fatigue Lifing Method. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2012/09// VL - 52 IS - 7 M3 - Article SP - 705 EP - 715 SN - 00144851 AB - An energy-based fatigue-life prediction framework for the determination of full-life, remaining-life, and critical-life of in-service structures subjected to torsional-shear loading has been developed. This framework is developed upon the existing foundation of energy-based fatigue models crafted for the axial, uniaxial bending, and transverse-shear loading cases, which state: the total strain energy density accumulated during both a monotonic event and a cumulative cyclic process is the same material property. The modified energy-based torsional-shear fatigue-life prediction framework is composed of the following entities: (1) the development of a torsional-shear fatigue testing procedure capable of assessing strain energy density per cycle in a pure shear stress state and (2) the determination of the remaining-life and critical-life of in-service aluminum (Al) 6061-T6 structures subjected to shear fatigue through the application of the energy-based prediction method. Experimental data was shown to be affected by load-frame misalignment which was estimated and successfully incorporated into the validation results. Close correlation between adjusted experimental results and the full-life and critical-life predictions stemmed from a 3-to-2 shear-to-axial biaxial loading assumption, which was supported by crack path comparisons. Results of the study effectively demonstrated the versatility of the energy-based lifing method. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHEAR (Mechanics) KW - MATERIALS -- Fatigue KW - TORSION KW - ENERGY density KW - ALUMINUM KW - CORRELATION (Statistics) KW - LOADS (Mechanics) KW - Energy-based KW - Fatigue KW - Lifing KW - Shear N1 - Accession Number: 78191127; Wertz, J. 1 Shen, M.-H.H. 1; Email Address: shen.1@osu.edu Scott-Emuakpor, O. 2 George, T. 2 Cross, C. 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus 43210 USA 2: Air Force Research Laboratory, Wright-Patterson AFB, Greene 45433 USA; Source Info: Sep2012, Vol. 52 Issue 7, p705; Subject Term: SHEAR (Mechanics); Subject Term: MATERIALS -- Fatigue; Subject Term: TORSION; Subject Term: ENERGY density; Subject Term: ALUMINUM; Subject Term: CORRELATION (Statistics); Subject Term: LOADS (Mechanics); Author-Supplied Keyword: Energy-based; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Lifing; Author-Supplied Keyword: Shear; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; Number of Pages: 11p; Document Type: Article L3 - 10.1007/s11340-011-9536-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78191127&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - LETCHER, T. AU - SHEN, M.-H. H. AU - SCOTT-EMUAKPOR, O. AU - GEORGE, T. AU - CROSS, C. T1 - An energy-based critical fatigue life prediction method for AL6061-T6. JO - Fatigue & Fracture of Engineering Materials & Structures JF - Fatigue & Fracture of Engineering Materials & Structures Y1 - 2012/09// VL - 35 IS - 9 M3 - Article SP - 861 EP - 870 PB - Wiley-Blackwell SN - 8756758X AB - ABSTRACT An energy-based critical fatigue life prediction method is developed and analysed. The original energy-based fatigue life prediction theory states that the number of cycles to failure is estimated by dividing the total energy accumulated during a monotonic fracture by the strain energy per cycle. Because the accuracy of this concept is heavily dependent on the cyclic behaviour of the material, a precise understanding of the strain energy behaviour throughout each failure process is necessary. Examination of the stress and strain during fatigue tests shows that the cyclic strain energy behaviour is not perfectly stable as initially presumed. It was discovered that fatigue hysteresis energy always accumulates to the same amount of energy by the end of the stable energy region, which has led to a new 'critical energy' material property. Characterization of strain energy throughout the fatigue process has thus improved the understanding of an energy-based fatigue life prediction method. [ABSTRACT FROM AUTHOR] AB - Copyright of Fatigue & Fracture of Engineering Materials & Structures is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Fatigue KW - RESIDUAL stresses KW - PREDICTION theory KW - STRAINS & stresses (Mechanics) KW - MATERIALS -- Mechanical properties KW - cyclic behaviour KW - fatigue KW - strain energy N1 - Accession Number: 78218589; LETCHER, T. 1 SHEN, M.-H. H. 1 SCOTT-EMUAKPOR, O. 2 GEORGE, T. 2 CROSS, C. 2; Affiliation: 1: 201 W. 19th Ave, Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH, USA 2: Air Force Research Laboratory, WPAFB, OH, USA; Source Info: Sep2012, Vol. 35 Issue 9, p861; Subject Term: METALS -- Fatigue; Subject Term: RESIDUAL stresses; Subject Term: PREDICTION theory; Subject Term: STRAINS & stresses (Mechanics); Subject Term: MATERIALS -- Mechanical properties; Author-Supplied Keyword: cyclic behaviour; Author-Supplied Keyword: fatigue; Author-Supplied Keyword: strain energy; Number of Pages: 10p; Illustrations: 1 Black and White Photograph, 2 Diagrams, 5 Charts, 9 Graphs; Document Type: Article L3 - 10.1111/j.1460-2695.2011.01669.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78218589&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Burns, James T. AU - Larsen, James M. AU - Gangloff, Richard P. T1 - Effect of initiation feature on microstructure-scale fatigue crack propagation in Al–Zn–Mg–Cu JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2012/09// VL - 42 M3 - Article SP - 104 EP - 121 SN - 01421123 AB - Abstract: High fidelity measurements of constituent particle or corrosion topography nucleated fatigue crack growth rates (da/dN) are established for 7075-T651 in humid air. Values of microstructure-scale da/dN are determined by microscopy of programmed load-induced crack surface markers, rather than surface-only measurements. Both pristine and corroded specimen da/dN from various applied stress levels are successfully correlated using continuum-elastic stress intensity (ΔK or ΔK and K max) or dislocation-based (Bilby–Cottrell–Swindon) crack tip opening displacement (cyclic ϕ and ϕ max), with the former accounting for the gradient of elastic stress concentration due to the initiating feature. Values of da/dN vary by an order of magnitude at each fixed driving force due to microstructural influences that result in a locally irregular crack front. Grain-scale models using stress intensity closure or slip-based crystal plasticity do not capture experimental da/dN variability. Due to an inadequate mechanistic basis, mechanics-inspired models of da/dN do not predict multiple growth regimes that are typical of environment enhanced cracking. An elastic ΔK-based description of long crack da/dN data for a given alloy-environment can be transformed to a continuum elastic–plastic ϕ c basis to provide a mean crack growth rate description. Coupling mean rates with a statistical description of microstructure sensitive variability, and dislocation or crystal plasticity-finite element modeling of component ϕ c for non-continuum cracking, will enhance prognosis in the MSC regime. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - FATIGUE crack growth KW - MEASUREMENT KW - SURFACES (Physics) KW - STEEL -- Fracture KW - PLASTICITY KW - Aluminum KW - Corrosion KW - Fatigue KW - Fracture mechanics KW - Small crack N1 - Accession Number: 74676929; Burns, James T. 1,2; Email Address: jtb5r@virginia.edu Larsen, James M. 1 Gangloff, Richard P. 2; Affiliation: 1: Air Force Research Laboratory Materials and Manufacturing Directorate (AFRL/RX), Wright Patterson Air Force Base, OH 45433, USA 2: Department of Materials Science and Engineering, University of Virginia, Charlottesville, VA 22904, USA; Source Info: Sep2012, Vol. 42, p104; Subject Term: MICROSTRUCTURE; Subject Term: FATIGUE crack growth; Subject Term: MEASUREMENT; Subject Term: SURFACES (Physics); Subject Term: STEEL -- Fracture; Subject Term: PLASTICITY; Author-Supplied Keyword: Aluminum; Author-Supplied Keyword: Corrosion; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Fracture mechanics; Author-Supplied Keyword: Small crack; Number of Pages: 18p; Document Type: Article L3 - 10.1016/j.ijfatigue.2011.08.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74676929&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jha, Sushant K. AU - Szczepanski, Christopher J. AU - Golden, Patrick J. AU - Porter, William J. AU - John, Reji T1 - Characterization of fatigue crack-initiation facets in relation to lifetime variability in Ti–6Al–4V JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2012/09// VL - 42 M3 - Article SP - 248 EP - 257 SN - 01421123 AB - Abstract: An analysis of fatigue crack-initiation facets from the perspective of variability in lifetime of a duplex microstructure of Ti–6Al–4V is presented. Fatigue variability behavior of this alloy was marked by an increase in the lifetime variability to almost three orders in magnitude as the stress level was decreased. Crack initiation was found to occur primarily from the specimen surface with only a few exceptions where subsurface initiation was recorded. In most cases, and irrespective of lifetime, crack initiation was accompanied by crystallographic facet formation across primary-α particles. Crystallographic characterization of faceted grains and their neighborhood was conducted by sectioning across the facets using either focused ion beam or mechanical polishing, and subsequent Electron Back Scattered Diffraction analysis of the sections. The emphasis in this study was on discerning the factors that distinguish the crack-initiating microstructural arrangements and plausible mechanisms producing a life-limiting failure versus a long lifetime failure under nominally similar microstructure and applied stress level. The analyses revealed only subtle differences between the life-limiting and the long-lifetime failure in terms of deformation modes of the faceted grain(s) and their first nearest neighbors on a given section. The facets appeared to form on or near the basal plane in both the life-limiting and the long-lifetime, surface-initiated failures. In the life-limiting case, a combination of slip (in the faceted grain) and normal resolved stress across the facet plane seemed to be operational in facet formation. In the long-lifetime failure, shear along the facet plane appeared to be a more dominant deformation mode. The subtlety of differences indicates that the facet plane and the deformation modes of the faceting grain and its neighbors as determined from a 2D section may not be the most discriminating crack-initiation factors between the two lifetime regimes in this alloy. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE crack growth KW - CRACK initiation (Fracture mechanics) KW - MICROSTRUCTURE KW - ALUMINUM alloys KW - FOCUSED ion beams KW - ELECTRONS -- Backscattering KW - STRAINS & stresses (Mechanics) KW - Crack initiation facets KW - Electron Back Scattered Diffraction (EBSD) KW - Fatigue variability KW - Focused ion beam (FIB) KW - Ti–6Al–4V N1 - Accession Number: 74676943; Jha, Sushant K. 1; Email Address: sushant.jha@wpafb.af.mil Szczepanski, Christopher J. 2 Golden, Patrick J. 2 Porter, William J. 3 John, Reji 2; Affiliation: 1: Universal Technology Corporation, 1270 N Fairfield Rd., Dayton, OH 45432, USA 2: Air Force Research Laboratory, AFRL/RXLMN, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 3: University of Dayton Research Institute, Dayton, OH 45469, USA; Source Info: Sep2012, Vol. 42, p248; Subject Term: FATIGUE crack growth; Subject Term: CRACK initiation (Fracture mechanics); Subject Term: MICROSTRUCTURE; Subject Term: ALUMINUM alloys; Subject Term: FOCUSED ion beams; Subject Term: ELECTRONS -- Backscattering; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: Crack initiation facets; Author-Supplied Keyword: Electron Back Scattered Diffraction (EBSD); Author-Supplied Keyword: Fatigue variability; Author-Supplied Keyword: Focused ion beam (FIB); Author-Supplied Keyword: Ti–6Al–4V; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijfatigue.2011.11.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74676943&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Golden, Patrick J. AU - Naboulsi, Sam T1 - Hybrid contact stress analysis of a turbine engine blade to disk attachment JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2012/09// VL - 42 M3 - Article SP - 296 EP - 303 SN - 01421123 AB - Abstract: The present investigation examines an analysis methodology for fretting fatigue in a turbine engine fan disk. This is an important problem for the operators of turbine engines, since it is a significant driver of fatigue damage and failure risk of disks. Fretting fatigue in turbine engines occurs when the blade and disk are pressed together in contact and experience a small oscillating relative displacement due to variations in engine speed and vibratory loading. Fretting causes a very high local stress near the edge of contact resulting in wear, nucleation of cracks, and their growth, which can result in significant reduction in the life of the material. It is dependent on geometry, loading conditions, residual stresses, and surface roughness, among other factors. These complexities are not just physically based, but also computationally challenging. For example, the determination of the local contact stresses accurately depends on the mesh resolution of the finite element method (FEM) model. This has been addressed using various approaches. Recently, a computational hybrid technique was implemented successfully to investigate fretting fatigue of turbine engine blade and disk attachments. The present work extends application to specifically investigate the effects of surface contact in an actual blade and disk assembly using a representative loading mission. The results show consistency with available experimental data. Finally, the knowledge gained from this investigation could be used as a basis for uncertainty analyses of an actual blade and disk assembly. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - TURBINES -- Blades KW - ENGINEERING KW - FRETTING corrosion KW - LOADS (Mechanics) KW - MATERIALS -- Fatigue KW - Contact stress KW - Finite element method KW - Fretting fatigue KW - Stress analysis N1 - Accession Number: 74676947; Golden, Patrick J. 1; Email Address: patrick.golden@wpafb.af.mil Naboulsi, Sam 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: High Performance Technology, Inc., Reston, VA 20190, USA; Source Info: Sep2012, Vol. 42, p296; Subject Term: STRAINS & stresses (Mechanics); Subject Term: TURBINES -- Blades; Subject Term: ENGINEERING; Subject Term: FRETTING corrosion; Subject Term: LOADS (Mechanics); Subject Term: MATERIALS -- Fatigue; Author-Supplied Keyword: Contact stress; Author-Supplied Keyword: Finite element method; Author-Supplied Keyword: Fretting fatigue; Author-Supplied Keyword: Stress analysis; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.ijfatigue.2012.01.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74676947&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morrissey, Ryan J. AU - John, Reji AU - John Porter, W. T1 - Fatigue behavior of a thin gage Ni alloy after exposure to elevated temperature JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2012/09// VL - 42 M3 - Article SP - 304 EP - 309 SN - 01421123 AB - Abstract: Thin gage Ni-base superalloy materials are being targeted for hypersonic applications up to 1100°C. To achieve an optimized system design, standard mechanical behavior data on these materials are needed under a range of loading conditions such as tensile, creep and fatigue at representative temperatures. In order to meet this need, a unique test system developed in-house for determining materials properties of very thin materials was used to determine the fatigue response of a high temperature Ni alloy, both with and without prior exposure to elevated temperatures. This paper examines the effects of elevated temperature exposure on the ductility and fatigue resistance of Haynes 230 with a thickness of 0.127mm. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Fatigue KW - GAGES KW - NICKEL alloys KW - HEAT resistant alloys KW - HYPERSONIC aerodynamics KW - HIGH temperatures KW - Elevated temperature exposure KW - Fatigue KW - Nickel superalloy N1 - Accession Number: 74676948; Morrissey, Ryan J. 1; Email Address: ryan.morrissey@wpafb.af.mil John, Reji 1 John Porter, W. 2; Affiliation: 1: US Air Force Research Laboratory, AFRL/RXLMN, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA 2: University of Dayton Research Institute, Dayton, OH 45431, USA; Source Info: Sep2012, Vol. 42, p304; Subject Term: MATERIALS -- Fatigue; Subject Term: GAGES; Subject Term: NICKEL alloys; Subject Term: HEAT resistant alloys; Subject Term: HYPERSONIC aerodynamics; Subject Term: HIGH temperatures; Author-Supplied Keyword: Elevated temperature exposure; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Nickel superalloy; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.ijfatigue.2012.02.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74676948&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stewart, Eric C. AU - Patil, Mayuresh J. AU - Canfield, Robert A. AU - Snyder, Richard D. T1 - Parametric Representation and Shape Optimization of Flapping Micro Air Vehicle Wings. JO - International Journal of Micro Air Vehicles JF - International Journal of Micro Air Vehicles Y1 - 2012/09// VL - 4 IS - 3 M3 - Article SP - 179 EP - 202 SN - 17568293 AB - The effects of wing planform on the aerodynamic performance of a rigid wing in forward flapping flight and hovering configurations were investigated in this paper. The planform design space was parameterized using a new, modified Zimmerman method based on low aspect ratio Zimmerman planform designs. The aerodynamic forces on the wing were calculated using Peters' aerodynamics with an assumed inflow coupled with blade element theory. A multiobjective optimization approach was taken to find the best planform designs for three objectives: wing area, peak power input, and an aerodynamic force based on the kinematic configuration - lift for hovering and thrust for forward flight. A gradient-based optimizer and the ε-constraint method were used to find the Pareto front of optimal designs with the aerodynamic force as the primary objective function. The choice of primary and secondary objective functions is important in determining the optimal planform. The Pareto optimal planforms for the case when only area is considered as a secondary objective function drastically differ from the optimal planforms when only power is taken as a secondary objective function. As the secondary objective ε values change over the design space, so do the optimal planform shapes. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Micro Air Vehicles is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORNITHOPTERS KW - MICRO air vehicles KW - AIRPLANE wings KW - AERODYNAMICS -- Research KW - PARETO principle N1 - Accession Number: 82562781; Stewart, Eric C. 1 Patil, Mayuresh J. 1 Canfield, Robert A. 1 Snyder, Richard D. 2; Affiliation: 1: Department of Aerospace and Ocean Engineering, Blacksburg, VA 2: Air Force Research Laboratory, Dayton, OH; Source Info: Sep2012, Vol. 4 Issue 3, p179; Subject Term: ORNITHOPTERS; Subject Term: MICRO air vehicles; Subject Term: AIRPLANE wings; Subject Term: AERODYNAMICS -- Research; Subject Term: PARETO principle; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 24p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82562781&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, H. Sam AU - Roy, Ajit K. AU - Varshney, Vikas AU - Wohlwend, Jennifer L. AU - Putnam, Shawn A. T1 - Temperature dependence of thermal conductance between aluminum and water JO - International Journal of Thermal Sciences JF - International Journal of Thermal Sciences Y1 - 2012/09// VL - 59 M3 - Article SP - 17 EP - 20 SN - 12900729 AB - Abstract: We present a method to obtain temperature dependence of thermal conductance between aluminum and water. The temperature dependence of thermal boundary conductance (TBC) including phonon–phonon interactions and electron–phonon interactions is predicted. The contribution from phonon–phonon interactions is calculated by molecular dynamics (MD) simulation. With time-domain thermo-reflectance experiments, the thermal conductance of electron–phonon interactions is extracted. The temperature dependence of total thermal conductance is calculated by combining the thermal conductance contributed by phonon–phonon interactions and electron–phonon interactions. Thermal boundary conductance increases as temperature increases from 273K to 373K. [Copyright &y& Elsevier] AB - Copyright of International Journal of Thermal Sciences is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL conductivity KW - TEMPERATURE effect KW - ALUMINUM KW - WATER KW - ELECTRON-phonon interactions KW - MOLECULAR dynamics -- Simulation methods KW - THERMAL boundary layer KW - Electron–phonon KW - Molecular dynamics KW - Phonon–phonon KW - Thermal conductance N1 - Accession Number: 77338961; Huang, H. Sam 1,2; Email Address: hsengji.huang@wpafb.af.mil Roy, Ajit K. 1 Varshney, Vikas 1,2 Wohlwend, Jennifer L. 1,2 Putnam, Shawn A. 1,2; Affiliation: 1: Thermal Sciences and Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, Dayton, OH 45433, USA 2: Universal Technology Corporation, 1270 N. Fairfield Rd., Dayton, OH 45432, USA; Source Info: Sep2012, Vol. 59, p17; Subject Term: THERMAL conductivity; Subject Term: TEMPERATURE effect; Subject Term: ALUMINUM; Subject Term: WATER; Subject Term: ELECTRON-phonon interactions; Subject Term: MOLECULAR dynamics -- Simulation methods; Subject Term: THERMAL boundary layer; Author-Supplied Keyword: Electron–phonon; Author-Supplied Keyword: Molecular dynamics; Author-Supplied Keyword: Phonon–phonon; Author-Supplied Keyword: Thermal conductance; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.ijthermalsci.2012.04.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77338961&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bilitza, Dieter AU - Brown, Steven A. AU - Wang, Mathew Y. AU - Souza, Jonas R. AU - Roddy, Patrick A. T1 - Measurements and IRI model predictions during the recent solar minimum JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2012/09// VL - 86 M3 - Article SP - 99 EP - 106 SN - 13646826 AB - Abstract: Cycle 23 was exceptional in that it lasted almost two years longer than its predecessors and in that it ended in an extended minimum period that proved all predictions wrong. Comparisons of the International Reference Ionosphere (IRI) with CHAMP and GRACE in-situ measurements of electron density during the minimum have revealed significant discrepancies at 400–500km altitude (. Our study investigates the causes for these discrepancies with the help of ionosonde and Planar Langmuir Probe (PLP) data from the Communications/Navigation Outage Forecasting System (C/NOFS) satellite. Our C/NOFS comparisons confirm the earlier CHAMP and GRACE results. But the ionosonde measurements of the F-peak plasma frequency (foF2) show generally good agreement throughout the whole solar cycle. At mid-latitude stations yearly averages of the data-model difference are within 10% and at low latitudes stations within 20%. The 60–70% differences found at 400–500km altitude are not seen at the F peak. We will discuss how these seemingly contradicting results from the ionosonde and insitu data-model comparisons can be explained and which parameters need to be corrected in the IRI model. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSPHERE KW - SOLAR activity KW - IONOSONDES KW - PLASMA frequencies KW - SOLAR cycle KW - PREDICTION theory KW - SATELLITE meteorology KW - C/NOFS KW - Ionosonde KW - IRI KW - Solar minimum N1 - Accession Number: 79654876; Bilitza, Dieter 1,2; Email Address: dieter.bilitza-1@nasa.gov Brown, Steven A. 1 Wang, Mathew Y. 1 Souza, Jonas R. 3; Email Address: jonas@dae.inpe.br Roddy, Patrick A. 4; Email Address: Patrick.Roddy@hanscom.af.mil; Affiliation: 1: George Mason University, Space Weather Laboratory, 6A2, Fairfax, VA 22030, USA 2: Heliospheric Laboratory, NASA GSFC, Code 672, Greenbelt, MD 20771, USA 3: Instituto Nacional de Pesquisas Espaciais, São José dos Campos, SP, Brazil 4: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA, USA; Source Info: Sep2012, Vol. 86, p99; Subject Term: IONOSPHERE; Subject Term: SOLAR activity; Subject Term: IONOSONDES; Subject Term: PLASMA frequencies; Subject Term: SOLAR cycle; Subject Term: PREDICTION theory; Subject Term: SATELLITE meteorology; Author-Supplied Keyword: C/NOFS; Author-Supplied Keyword: Ionosonde; Author-Supplied Keyword: IRI; Author-Supplied Keyword: Solar minimum; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jastp.2012.06.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79654876&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pinilla, V. AU - Solano, J. P. AU - Paniagua, G. AU - Anthony, R. J. T1 - Adiabatic Wall Temperature Evaluat on in a High Speed Turbine. JO - Journal of Heat Transfer JF - Journal of Heat Transfer Y1 - 2012/09// VL - 134 IS - 9 M3 - Article SP - 1 EP - 9 SN - 00221481 AB - Engine development requires accurate estimates of the heat loads. Estimates of the convective heat fluxes are particularly vital to assess the thermomechanical integrity of the turbomachinery components. This paper reports an experimental heat transfer research in a one and a half turbine stage, composed of a high-pressure turbine and a low-pressure vane. Measurements were petformed in a compression tube facility at the von Karman Institute, able to reproduce engine representative Reynolds and Mach numbers. Double-layered thin film gauges were used to monitor the time-dependent temperature distribution around the airfoil. Several tests at different metal temperatures were performed to derive the adiabatic wall temperature. This research allowed quantifying the independent effects on the unsteady heat flux of the gas temperature fluctuations and boundary layer unsteadiness. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Heat Transfer is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS turbines KW - HEAT transfer KW - HEAT -- Convection KW - HEAT flux measurement KW - TURBINES KW - THIN films KW - ADIABATIC engines KW - TEMPERATURE distribution KW - convective heat transfer KW - gas turbine KW - thin film gauges N1 - Accession Number: 79565332; Pinilla, V. 1,2 Solano, J. P. 2,3 Paniagua, G. 2; Email Address: gpanlagua@me.com Anthony, R. J. 4; Affiliation: 1: Industria de Turbopropulsores S.A., Parque Tecnológico de Zamudio, Edificio 300,48170 Zamudio, Spain 2: Institute for Fluid Dynamics, Turbomachinery and Propulsion Department, Chaussée de Waterloo 72, 1640 Rhode Saint Genèse, Belgium 3: Dep. Ingeniería Térmica y de Fluidos, Universidad Politécnica de Cartagena, Campus Muralla del Mar, 30202 Cartagena. Spain 4: Air Force Research Laboratory, Propulsion Directorate, Wright Patterson Air Force Base, OH 45433; Source Info: Sep2012, Vol. 134 Issue 9, p1; Subject Term: GAS turbines; Subject Term: HEAT transfer; Subject Term: HEAT -- Convection; Subject Term: HEAT flux measurement; Subject Term: TURBINES; Subject Term: THIN films; Subject Term: ADIABATIC engines; Subject Term: TEMPERATURE distribution; Author-Supplied Keyword: convective heat transfer; Author-Supplied Keyword: gas turbine; Author-Supplied Keyword: thin film gauges; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1115/1.4006313 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79565332&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chaudhari, M. AU - Singh, A. AU - Gopal, P. AU - Nag, S. AU - Viswanathan, G.B. AU - Tiley, J. AU - Banerjee, R. AU - Du, J. T1 - Site occupancy of chromium in the γ′-Ni 3 Al phase of nickel-based superalloys: a combined 3D atom probe and first-principles study. JO - Philosophical Magazine Letters JF - Philosophical Magazine Letters Y1 - 2012/09// VL - 92 IS - 9 M3 - Article SP - 495 EP - 506 PB - Taylor & Francis Ltd SN - 09500839 AB - Transition-metal dopants play a critical role in the high-temperature mechanical strength and corrosion resistance of nickel-based superalloys. In this article, the site occupancy behavior of chromium in γ′-Ni3Al has been investigated by combining three-dimensional (3D) atom probe and high-resolution transmission electron microscopy characterizations with ab initio density functional theory (DFT) calculations. The 3D atom probe data show a clear preference of chromium on the aluminum sublattice over the nickel sublattice in Rene88 super alloys. First-principles DFT total-energy calculations were performed to understand the site occupancy of chromium in the L12 structured γ-Ni3Al. The obtained chromium site preference energies have been compared using the anti-site and vacancy-based substitution formation mechanism, as well as using the standard defect formation formalism. It was found that chromium prefers aluminum site, consistent with the 3D atom probe result. In addition, interaction energies between two chromium atoms have also been determined from first-principles calculations. Our results show that chromium atoms prefer to be close by on either nickel or aluminum sublattices or on a nickel–aluminum mixed lattice, suggesting a potential tendency of chromium segregation in the γ′ phase. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Magazine Letters is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHROMIUM KW - NICKEL alloys KW - HEAT resistant alloys KW - DENSITY functionals KW - HIGH temperatures KW - STRENGTH of materials KW - CORROSION resistant materials KW - LATTICE theory KW - atom probe KW - defects KW - density-functional theory KW - high-resolution imaging KW - superalloys N1 - Accession Number: 78140995; Chaudhari, M. 1 Singh, A. 1 Gopal, P. 1 Nag, S. 1 Viswanathan, G.B. 2 Tiley, J. 2 Banerjee, R. 1 Du, J. 1; Email Address: Jincheng.du@unt.edu; Affiliation: 1: Department of Materials Science and Engineering and Center for Advanced Research and Technology, University of North Texas, Denton, TX 76203, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH 45309, USA; Source Info: Sep2012, Vol. 92 Issue 9, p495; Subject Term: CHROMIUM; Subject Term: NICKEL alloys; Subject Term: HEAT resistant alloys; Subject Term: DENSITY functionals; Subject Term: HIGH temperatures; Subject Term: STRENGTH of materials; Subject Term: CORROSION resistant materials; Subject Term: LATTICE theory; Author-Supplied Keyword: atom probe; Author-Supplied Keyword: defects; Author-Supplied Keyword: density-functional theory; Author-Supplied Keyword: high-resolution imaging; Author-Supplied Keyword: superalloys; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 12p; Illustrations: 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1080/09500839.2012.690904 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78140995&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Whitworth, William C. AU - Hamilton, Lanette R. AU - Goodwin, Donald J. AU - Barrera, Carlos AU - West, Kevin B. AU - Racster, Laura AU - Daniels, Laura J. AU - Chuke, Stella O. AU - Campbell, Brandon H. AU - Bohanon, Jamaria AU - Jaffar, Atheer T. AU - Drane, Wanzer AU - Maserang, David AU - Mazurek, Gerald H. AU - Pai, Madhukar T1 - Within-Subject Interlaboratory Variability of QuantiFERON-TB Gold In-Tube Tests. JO - PLoS ONE JF - PLoS ONE Y1 - 2012/09// VL - 7 IS - 9 M3 - Article SP - 1 EP - 10 PB - Public Library of Science SN - 19326203 AB - Background: The QuantiFERON®-TB Gold In-Tube test (QFT-GIT) is a viable alternative to the tuberculin skin test (TST) for detecting Mycobacterium tuberculosis infection. However, within-subject variability may limit test utility. To assess variability, we compared results from the same subjects when QFT-GIT enzyme-linked immunosorbent assays (ELISAs) were performed in different laboratories. Methods: Subjects were recruited at two sites and blood was tested in three labs. Two labs used the same type of automated ELISA workstation, 8-point calibration curves, and electronic data transfer. The third lab used a different automated ELISA workstation, 4-point calibration curves, and manual data entry. Variability was assessed by interpretation agreement and comparison of interferon-γ (IFN-γ) measurements. Data for subjects with discordant interpretations or discrepancies in TB Response >0.05 IU/mL were verified or corrected, and variability was reassessed using a reconciled dataset. Results: Ninety-seven subjects had results from three labs. Eleven (11.3%) had discordant interpretations and 72 (74.2%) had discrepancies >0.05 IU/mL using unreconciled results. After correction of manual data entry errors for 9 subjects, and exclusion of 6 subjects due to methodological errors, 7 (7.7%) subjects were discordant. Of these, 6 (85.7%) had all TB Responses within 0.25 IU/mL of the manufacturer's recommended cutoff. Non-uniform error of measurement was observed, with greater variation in higher IFN-γ measurements. Within-subject standard deviation for TB Response was as high as 0.16 IU/mL, and limits of agreement ranged from -0.46 to 0.43 IU/mL for subjects with mean TB Response within 0.25 IU/ mL of the cutoff. Conclusion: Greater interlaboratory variability was associated with manual data entry and higher IFN-γ measurements. Manual data entry should be avoided. Because variability in measuring TB Response may affect interpretation, especially near the cutoff, consideration should be given to developing a range of values near the cutoff to be interpreted as "borderline," rather than negative or positive. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TUBERCULIN test KW - RESEARCH KW - SKIN tests KW - MYCOBACTERIUM tuberculosis KW - ENZYME-linked immunosorbent assay KW - TUBERCULOSIS -- Diagnosis KW - IMMUNOENZYME technique N1 - Accession Number: 82446068; Whitworth, William C. 1; Email Address: wcw2@cdc.gov Hamilton, Lanette R. 2 Goodwin, Donald J. 3 Barrera, Carlos 2 West, Kevin B. 4 Racster, Laura 3 Daniels, Laura J. 1,5 Chuke, Stella O. 1,6 Campbell, Brandon H. 1 Bohanon, Jamaria 3,5 Jaffar, Atheer T. 3,5 Drane, Wanzer 7 Maserang, David 8 Mazurek, Gerald H. 1 Pai, Madhukar 9; Affiliation: 1: Division of Tuberculosis Elimination, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America 2: Department of Medicine, Tripler Army Medical Center, Honolulu, Hawaii, United States of America 3: Epidemiology Services Branch, United States Air Force School of Aerospace Medicine, Brooks City-Base, Texas, United States of America 4: Department of Occupational Medicine/TB Prevention/Deployment Medicine, Wilford Hall Medical Center, Reid Clinic, Lackland Air Force Base, Texas, United States of America 5: CDC Foundation, Atlanta, Georgia, United States of America 6: Northrop Grumman Information Systems Sector, Atlanta, Georgia, United States of America 7: Distinguished Professor Emeritus of Biostatistics, University of South Carolina, Columbia, South Carolina, United States of America 8: Applied Technology Center, United States Air Force School of Aerospace Medicine, Brooks City-Base, Texas, United States of America 9: McGill University, Canada; Source Info: Sep2012, Vol. 7 Issue 9, Special section p1; Subject Term: TUBERCULIN test; Subject Term: RESEARCH; Subject Term: SKIN tests; Subject Term: MYCOBACTERIUM tuberculosis; Subject Term: ENZYME-linked immunosorbent assay; Subject Term: TUBERCULOSIS -- Diagnosis; Subject Term: IMMUNOENZYME technique; Number of Pages: 10p; Document Type: Article L3 - 10.1371/journal.pone.0043790 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82446068&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sathish, Shamachary AU - Welter, John T. AU - Jata, Kumar V. AU - Schehl, Norman AU - Boehnlein, Thomas T1 - Development of nondestructive non-contact acousto-thermal evaluation technique for damage detection in materials. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2012/09// VL - 83 IS - 9 M3 - Article SP - 095103 EP - 095103-11 PB - American Institute of Physics SN - 00346748 AB - This paper presents the development of a new non-contact acousto-thermal signature (NCATS) nondestructive evaluation technique. The physical basis of the method is the measurement of the efficiency of the material to convert acoustic energy into heat, and a theoretical model has been used to evaluate this. The increase in temperature due to conversion of acoustic energy injected into the material without direct contact was found to depend on the thermal and elastic properties of the material. In addition, it depends on the experimental parameters of the acoustic source power, the distance between sample and acoustic source, and the period of acoustic excitation. Systematic experimental approaches to optimize each of the experimental variables to maximize the observed temperature changes are described. The potential of the NCATS technique to detect microstructural-level changes in materials is demonstrated by evaluating accumulated damage due to plasticity in Ti-6Al-4V and low level thermal damage in polymer matrix composites. The ability of the technique for macroscopic applications in nondestructive evaluation is demonstrated by imaging a crack in an aluminum test sample. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - ENGINEERING design KW - MATERIALS KW - ACOUSTIC localization KW - MATERIALS -- Analysis KW - POLYMERS N1 - Accession Number: 82068561; Sathish, Shamachary 1 Welter, John T. 2 Jata, Kumar V. 2 Schehl, Norman 1 Boehnlein, Thomas 1; Affiliation: 1: Structural Integrity Division, University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469-0127, 2: Metals, Ceramics and Nondestructive Evaluation Division, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433,; Source Info: Sep2012, Vol. 83 Issue 9, p095103; Subject Term: NONDESTRUCTIVE testing; Subject Term: ENGINEERING design; Subject Term: MATERIALS; Subject Term: ACOUSTIC localization; Subject Term: MATERIALS -- Analysis; Subject Term: POLYMERS; NAICS/Industry Codes: 541330 Engineering Services; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 1p; Illustrations: 2 Black and White Photographs, 5 Diagrams, 7 Graphs; Document Type: Article L3 - 10.1063/1.4749245 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82068561&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bhat, Surendra S. AU - Narayanan, Ram M. AU - Rangaswamy, Muralidhar T1 - Design, Performance and Optimization for Multimodal Radar Operation. JO - Sensors (14248220) JF - Sensors (14248220) Y1 - 2012/09// VL - 12 IS - 9 M3 - Article SP - 12673 EP - 12693 SN - 14248220 AB - This paper describes the underlying methodology behind an adaptive multimodal radar sensor that is capable of progressively optimizing its range resolution depending upon the target scattering features. It consists of a test-bed that enables the generation of linear frequency modulated waveforms of various bandwidths. This paper discusses a theoretical approach to optimizing the bandwidth used by the multimodal radar.It also discusses the various experimental results obtained from measurement. There solution predicted from theory agrees quite well with that obtained from experiments for different target arrangements. [ABSTRACT FROM AUTHOR] AB - Copyright of Sensors (14248220) is the property of MDPI Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR -- Design & construction KW - RADAR -- Automatic detection KW - FREQUENCY modulation detectors KW - BANDWIDTHS KW - PERFORMANCE evaluation KW - MATHEMATICAL optimization KW - adaptive radar KW - bandwidth optimization KW - HRR profile KW - LFM KW - multimodal radar N1 - Accession Number: 80731765; Bhat, Surendra S. 1; Email Address: ssb166@psu.edu Narayanan, Ram M. 1; Email Address: ram@engr.psu.edu Rangaswamy, Muralidhar 2; Email Address: muralidhar.rangaswamy@wpafb.af.mil; Affiliation: 1: Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802, USA 2: Air Force Research Laboratory, Wright Patterson AFB, Dayton, OH 45433, USA; Source Info: 2012, Vol. 12 Issue 9, p12673; Subject Term: RADAR -- Design & construction; Subject Term: RADAR -- Automatic detection; Subject Term: FREQUENCY modulation detectors; Subject Term: BANDWIDTHS; Subject Term: PERFORMANCE evaluation; Subject Term: MATHEMATICAL optimization; Author-Supplied Keyword: adaptive radar; Author-Supplied Keyword: bandwidth optimization; Author-Supplied Keyword: HRR profile; Author-Supplied Keyword: LFM; Author-Supplied Keyword: multimodal radar; Number of Pages: 21p; Illustrations: 1 Color Photograph, 5 Diagrams, 10 Charts, 15 Graphs; Document Type: Article L3 - 10.3390/s120912673 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=80731765&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bright, T.J. AU - Watjen, J.I. AU - Zhang, Z.M. AU - Muratore, C. AU - Voevodin, A.A. T1 - Optical properties of HfO2 thin films deposited by magnetron sputtering: From the visible to the far-infrared JO - Thin Solid Films JF - Thin Solid Films Y1 - 2012/09// VL - 520 IS - 22 M3 - Article SP - 6793 EP - 6802 SN - 00406090 AB - Abstract: Hafnium oxide (HfO2 or hafnia) holds promise as a high-index dielectric in optical devices and thermal barrier coatings, because of its transparency over a broad spectrum (from the ultraviolet to the mid-infrared) and chemical and thermal stability at high temperatures. In the present work, thin hafnia films of thicknesses from about 180 to 500nm are deposited on Si substrates using reactive magnetron sputtering. The crystalline structure and surface topography are characterized by X-ray diffraction and atomic force microscopy, respectively. The optical and radiative properties of the film–substrate composites are measured at room temperature using spectroellipsometry and Fourier-transform infrared spectrometry. The optical constants are obtained from about 0.37 to 500μm by fitting suitable models to the experimental results. Optical properties and dielectric function modeling are discussed with correlation to both film thickness and surface roughness. It is found that a single-oscillator dielectric-function model can describe radiative properties from about 1 to 20μm. By combining Cauchy''s formula (for the visible and near-infrared regions) with a multiple-oscillator Lorentz model (for the far-infrared region), a dielectric function is obtained for the HfO2 films that is applicable from the visible to the far-infrared. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC films -- Optical properties KW - HAFNIUM oxide -- Dielectric properties KW - HAFNIUM oxide films KW - MAGNETRON sputtering KW - THERMAL barrier coatings KW - HIGH temperatures KW - FOURIER transform infrared spectroscopy KW - Ellipsometry KW - Fourier transform infrared spectroscopy KW - Hafnium oxide KW - Infrared KW - Magnetron sputtering KW - Optical constants KW - Thin films KW - X-ray diffraction N1 - Accession Number: 78430469; Bright, T.J. 1 Watjen, J.I. 1 Zhang, Z.M. 1; Email Address: zhuomin.zhang@me.gatech.edu Muratore, C. 2 Voevodin, A.A. 2; Affiliation: 1: The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA 2: Thermal Sciences and Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, OH 45433, USA; Source Info: Sep2012, Vol. 520 Issue 22, p6793; Subject Term: METALLIC films -- Optical properties; Subject Term: HAFNIUM oxide -- Dielectric properties; Subject Term: HAFNIUM oxide films; Subject Term: MAGNETRON sputtering; Subject Term: THERMAL barrier coatings; Subject Term: HIGH temperatures; Subject Term: FOURIER transform infrared spectroscopy; Author-Supplied Keyword: Ellipsometry; Author-Supplied Keyword: Fourier transform infrared spectroscopy; Author-Supplied Keyword: Hafnium oxide; Author-Supplied Keyword: Infrared; Author-Supplied Keyword: Magnetron sputtering; Author-Supplied Keyword: Optical constants; Author-Supplied Keyword: Thin films; Author-Supplied Keyword: X-ray diffraction; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.tsf.2012.07.037 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78430469&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lei, Z. W. AU - Liu, M. AU - Ge, W. AU - Fu, Z. P. AU - Reinhardt, K. AU - Knize, R. J. AU - Lu, Yalin T1 - Morphology and optical absorption change of Ag/SiO2 core-shell nanoparticles under thermal annealing. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/08/20/ VL - 101 IS - 8 M3 - Article SP - 083903 PB - American Institute of Physics SN - 00036951 AB - Ag/SiO2 core shell nanoparticles can be potentially useful in solar cells with the expectation to enhance light absorption. Thermal stability of such nanoparticles would be an important issue and has not been investigated much in the past. This research studied both morphological and optical absorption changes when heat-treating Ag/SiO2 core shell nanoparticles at various temperatures. At lower temperatures, Ag diffuses out through the porous shell, and remains inside at higher temperatures when the shell becomes solid. The results are instructive to further apply such nanoparticles into solar cells. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHT absorption KW - RESEARCH KW - NANOPARTICLES KW - SOLAR cells KW - X-ray microanalysis KW - TRANSMISSION electron microscopes N1 - Accession Number: 79357680; Lei, Z. W. 1 Liu, M. 1 Ge, W. 1 Fu, Z. P. 1 Reinhardt, K. 2 Knize, R. J. 3 Lu, Yalin 1,3,4; Affiliation: 1: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, 2: United States Air Force Office of Scientific Research, AFOSR/NE, 875 North Randolph Street, Suite 326, Arlington, Virginia 22203, 3: Laser Optics Research Center, Physics Department, United States Air Force Academy, Colorado 80840, 4: Hefei National Laboratory for Physical Sciences at the Microscale, Hefei 230026,; Source Info: 8/20/2012, Vol. 101 Issue 8, p083903; Subject Term: LIGHT absorption; Subject Term: RESEARCH; Subject Term: NANOPARTICLES; Subject Term: SOLAR cells; Subject Term: X-ray microanalysis; Subject Term: TRANSMISSION electron microscopes; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.4747803 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79357680&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kwak, Jae AU - Grigsby, Claude C. AU - Rizki, Mateen M. AU - Preti, George AU - Köksal, Mustafa AU - Josue, Jesusa AU - Yamazaki, Kunio AU - Beauchamp, Gary K. T1 - Differential binding between volatile ligands and major urinary proteins due to genetic variation in mice JO - Physiology & Behavior JF - Physiology & Behavior Y1 - 2012/08/20/ VL - 107 IS - 1 M3 - Article SP - 112 EP - 120 SN - 00319384 AB - Abstract: Two different structural classes of chemical signals in mouse urine, i.e., volatile organic compounds (VOCs) and the major urinary proteins (MUPs), interact closely because MUPs sequester VOCs. Although qualitative and/or quantitative differences in each chemical class have been reported, previous studies have examined only one of the classes at a time. No study has analyzed these two sets simultaneously, and consequently binding interactions between volatile ligands and proteins in urines of different strains have not been compared. Here, we compared the release of VOCs in male urines of three different inbred strains (C57BL/6J, BALB/b and AKR) before and after denaturation of urinary proteins, mainly MUPs. Both MUP and VOC profiles were distinctive in the intact urine of each strain. Upon denaturation, each of the VOC profiles changed due to the release of ligands previously bound to MUPs. The results indicate that large amounts of numerous ligands are bound to MUPs and that these ligands represent a variety of different structural classes of VOCs. Furthermore, the degree of release in each ligand was different in each strain, indicating that different ligands are differentially bound to proteins in the urines of different strains. Therefore, these data suggest that binding interactions in ligands and MUPs differ between strains, adding yet another layer of complexity to chemical communication in mice. [Copyright &y& Elsevier] AB - Copyright of Physiology & Behavior is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGANDS (Biochemistry) KW - URINALYSIS KW - VOLATILE organic compounds KW - CARRIER proteins KW - DENATURATION of proteins KW - MICE as laboratory animals KW - Differential binding KW - Gas chromatography–mass spectrometry (GC–MS) KW - Isoelectric focusing (IEF) gel electrophoresis KW - Major urinary proteins (MUPs) KW - Metabolite Differentiation and Discovery Lab (MeDDL) KW - Sodium dodecyl sulfate–polyacrylamide gel electrophoresis (SDS–PAGE) KW - Volatile ligands N1 - Accession Number: 78144810; Kwak, Jae 1; Email Address: jkwak@monell.org Grigsby, Claude C. 2; Email Address: Claude.Grigsby@wpafb.af.mil Rizki, Mateen M. 3; Email Address: mateen.rizki@wright.edu Preti, George 1,4; Email Address: preti@pobox.upenn.edu Köksal, Mustafa 5; Email Address: mkoksal@sas.upenn.edu Josue, Jesusa 1; Email Address: jjosue@monell.org Yamazaki, Kunio 1; Email Address: yamazaki@monell.org Beauchamp, Gary K. 1; Email Address: beauchamp@monell.org; Affiliation: 1: Monell Chemical Senses Center, 3500 Market Street, Philadelphia, PA 19104, USA 2: Human Signatures Branch, Forecasting Division, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH 45433, USA 3: Department of Computer Science and Engineering, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH 45435, USA 4: Department of Dermatology, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA 5: Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, USA; Source Info: Aug2012, Vol. 107 Issue 1, p112; Subject Term: LIGANDS (Biochemistry); Subject Term: URINALYSIS; Subject Term: VOLATILE organic compounds; Subject Term: CARRIER proteins; Subject Term: DENATURATION of proteins; Subject Term: MICE as laboratory animals; Author-Supplied Keyword: Differential binding; Author-Supplied Keyword: Gas chromatography–mass spectrometry (GC–MS); Author-Supplied Keyword: Isoelectric focusing (IEF) gel electrophoresis; Author-Supplied Keyword: Major urinary proteins (MUPs); Author-Supplied Keyword: Metabolite Differentiation and Discovery Lab (MeDDL); Author-Supplied Keyword: Sodium dodecyl sulfate–polyacrylamide gel electrophoresis (SDS–PAGE); Author-Supplied Keyword: Volatile ligands; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.physbeh.2012.06.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78144810&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Park, Jeong-Hyun AU - Choudhury, Arup AU - Farmer, B.L. AU - Dang, T.D. AU - Park, Soo-Young T1 - Chemically modified graphene oxide/polybenzimidazobenzophenanthroline nanocomposites with improved electrical conductivity JO - Polymer JF - Polymer Y1 - 2012/08/17/ VL - 53 IS - 18 M3 - Article SP - 3937 EP - 3945 SN - 00323861 AB - Abstract: Graphene/polybenzimidazobenzophenanthroline nanocomposites were prepared through the liquid-phase exfoliation of graphene oxide (GO) and reduced graphene oxide (rGO) in methanesulfonic acid with subsequent solution mixing. Various chemical and combined chemical-thermal methods were examined to be effective for producing rGO with highly graphitic structure and excellent electrical conductivity. Raman and X-ray photoelectron spectroscopy showed higher degree of reduction of the GO with the combined chemical-thermal method compared to other chemical reduction processes. Structural characterization of the nanocomposites by X-ray diffraction, scanning electron microscopy and transmission electron microscopy showed good exfoliation and dispersion of both GO and rGO fillers in the polymer matrix. The thermogravimetric analysis found that the nanocomposites with rGO have higher onset and maximum weight loss temperatures than those with GO. Compared with the pure polymer, the electrical conductivity of the nanocomposites containing 10 wt% GO and GO reduced by the combined chemical-thermal treatment showed a remarkable increase by four and seven orders of magnitude, respectively. Long-term in-situ thermal reduction was performed to further improve the conductivities of the nanocomposites. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPHENE KW - PHENANTHROLINE KW - NANOCOMPOSITE materials KW - ELECTRIC conductivity KW - X-ray photoelectron spectroscopy KW - MOLECULAR structure KW - SOLUTION (Chemistry) KW - SULFONIC acids KW - CHEMICAL peel KW - Electrical conductivity KW - Graphene KW - Nanocomposites N1 - Accession Number: 78280191; Park, Jeong-Hyun 1 Choudhury, Arup 1 Farmer, B.L. 2 Dang, T.D. 2 Park, Soo-Young 1; Email Address: psy@knu.ac.kr; Affiliation: 1: Department of Polymer Science & Engineering, Kyungpook National University, #1370 Sankyuk-Dong, Buk-gu, Daegu 702-701, Republic of Korea 2: Air Force Research Laboratory, AFRL/MLBP, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Aug2012, Vol. 53 Issue 18, p3937; Subject Term: GRAPHENE; Subject Term: PHENANTHROLINE; Subject Term: NANOCOMPOSITE materials; Subject Term: ELECTRIC conductivity; Subject Term: X-ray photoelectron spectroscopy; Subject Term: MOLECULAR structure; Subject Term: SOLUTION (Chemistry); Subject Term: SULFONIC acids; Subject Term: CHEMICAL peel; Author-Supplied Keyword: Electrical conductivity; Author-Supplied Keyword: Graphene; Author-Supplied Keyword: Nanocomposites; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.polymer.2012.07.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78280191&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Woo, Myung-Heui AU - Grippin, Adam AU - Anwar, Diandra AU - Smith, Tamara AU - Wu, Chang-Yu AU - Wander, Joseph D. T1 - Effects of Relative Humidity and Spraying Medium on UV Decontamination of Filters Loaded with Viral Aerosols. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2012/08/15/ VL - 78 IS - 16 M3 - Article SP - 5781 EP - 5787 SN - 00992240 AB - Although respirators and filters are designed to prevent the spread of pathogenic aerosols, a stockpile shortage is anticipated during the next flu pandemic. Contact transfer and reaerosolization of collected microbes from used respirators are also a concern. An option to address these potential problems is UV irradiation, which inactivates microbes by dimerizing thymine/uracU in nucleic acids. The objective of this study was to determine the effects of transmission mode and environmental conditions on decontamination efficiency by UV. In this study, filters were contaminated by different transmission pathways (droplet and aerosol) using three spraying media (deionized water [DI], beef extract [BE], and artificial saliva [AS]) under different humidity levels (30% [low relative humidity {LRH}], 60% [MRH], and 90% [HRH]). UV irradiation at constant intensity was applied for two time intervals at each relative humidity condition. The highest inactivation efficiency (IE), around 5.8 logs, was seen for DI aerosols containing MS2 on filters at LRH after applying a UV intensity of 1.0 mW/cm2 for 30 min. The IE of droplets containing MS2 was lower than that of aerosols containing MS2. Absorption of UV by high water content and shielding of viruses near the center of the aggregate are considered responsible for this trend. Across the different media, lEs in AS and in BE were much lower than in DI for both aerosol and droplet transmission, indicating that solids present in AS and BE exhibited a protective effect. For particles sprayed in a protective medium, RH is not a significant parameter. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HUMIDITY KW - SPRAYING KW - ULTRAVIOLET radiation KW - BIOLOGICAL decontamination KW - FILTERS & filtration KW - AEROSOLS (Sprays) KW - NUCLEIC acids N1 - Accession Number: 78412388; Woo, Myung-Heui 1 Grippin, Adam 2 Anwar, Diandra 2 Smith, Tamara 1 Wu, Chang-Yu 1; Email Address: cywu@ufl.edu Wander, Joseph D. 3; Affiliation: 1: Department of Environmental Engineering Sciences, University of Fiorida, Gainesviiie, Fiorida, USA 2: Department of Chemicai Engineering, University of Fiorida, Gainesville, Florida, USA 3: Air Force Research Laboratory, Tyndall Air Force Base, Florida, USA; Source Info: Aug2012, Vol. 78 Issue 16, p5781; Subject Term: HUMIDITY; Subject Term: SPRAYING; Subject Term: ULTRAVIOLET radiation; Subject Term: BIOLOGICAL decontamination; Subject Term: FILTERS & filtration; Subject Term: AEROSOLS (Sprays); Subject Term: NUCLEIC acids; Number of Pages: 7p; Document Type: Article L3 - 10.1128/AEM.00455-12 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78412388&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Irvin, David J. AU - Stenger-Smith, John D. AU - Yandek, Gregory R. AU - Carberry, Jamie R. AU - Currie, Daniel A. AU - Theodoropoulou, Nikoleta AU - Irvin, Jennifer A. T1 - Enhanced electrochemical response of solution-deposited n-doping polymer via cocasting with ionic liquid. JO - Journal of Polymer Science Part B: Polymer Physics JF - Journal of Polymer Science Part B: Polymer Physics Y1 - 2012/08/15/ VL - 50 IS - 16 M3 - Article SP - 1145 EP - 1150 SN - 08876266 AB - A novel cocasting approach is presented for improving electroactivity of solution-cast films of conducting polymers. Solutions of the n-doping polymer poly(benzimidazobenzophenanthroline) (BBL) were co-deposited with the ionic liquid electrolyte 1-ethyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl)imide (EMIBTI). The resultant co-continuous mixture yielded highly porous polymer films (CC-BBL) upon removal of solvent and EMIBTI. Electrochemical quartz crystal microgravimetry revealed that the n-doping process in neat ionic liquid is anion-dominant, which is contrary to what is observed in dilute electrolyte solutions. The CC-BBL films exhibit a thirty-fold increase in initial current response and capacity relative to non-cocast BBL films. While current response and capacity of the non-cocast BBL improve with cycling, they level out after 800 cycles at 35% of those of the CC-BBL. CC-BBL shows high n-doping stability; no decrease in electroactivity is seen after 1000 cycles. © 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2012 [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Polymer Science Part B: Polymer Physics is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - IONIC liquids KW - QUARTZ crystals KW - CASTING (Manufacturing process) KW - GRAVIMETRY KW - co-casting KW - conducting polymers KW - electroactive polymer KW - electrochemistry KW - ion mobility KW - ionic liquid KW - morphology KW - n-doping N1 - Accession Number: 77497442; Irvin, David J. 1 Stenger-Smith, John D. 2 Yandek, Gregory R. 3 Carberry, Jamie R. 4 Currie, Daniel A. 4 Theodoropoulou, Nikoleta 4 Irvin, Jennifer A. 4; Affiliation: 1: Systems and Materials Research Corporation, 1300 W. Koenig Lane Suite 230, Austin, Texas 78756 2: Research Department, Naval Air Warfare Center Weapons Division,1400 N. Knox Road, China Lake, California 93555 3: Propulsion Materials Applications Branch, Air Force Research Laboratory, Propulsion Directorate Edwards Air Force Base, California 93524 4: College of Science, Texas State University-San Marcos, 601 University Drive, San Marcos, Texas 78666; Source Info: 8/15/2012, Vol. 50 Issue 16, p1145; Subject Term: POLYMERS; Subject Term: IONIC liquids; Subject Term: QUARTZ crystals; Subject Term: CASTING (Manufacturing process); Subject Term: GRAVIMETRY; Author-Supplied Keyword: co-casting; Author-Supplied Keyword: conducting polymers; Author-Supplied Keyword: electroactive polymer; Author-Supplied Keyword: electrochemistry; Author-Supplied Keyword: ion mobility; Author-Supplied Keyword: ionic liquid; Author-Supplied Keyword: morphology; Author-Supplied Keyword: n-doping; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; Number of Pages: 6p; Document Type: Article L3 - 10.1002/polb.23111 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77497442&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Matthew L. AU - Heitfeld, Kevin AU - Slone, Connor AU - Vaia, Richard A. T1 - Autonomic Hydrogels throughPostfunctionalizationof Gelatin. JO - Chemistry of Materials JF - Chemistry of Materials Y1 - 2012/08/14/ VL - 24 IS - 15 M3 - Article SP - 3074 EP - 3080 SN - 08974756 AB - Autonomic systems in biology, such as the circulatorysystem, functionindependently without an external stimulus. Materials that mimic thisbehavior hold promise for energy and medical technologies in the formof sensors, energy conversion units, and versatile micrometer scalemachinery. Self-oscillating hydrogels driven by the Belousov–Zhabotinsky(BZ) reaction are one class of autonomic materials that convert chemicalenergy to mechanical swell–deswell motion. Effective feedbackcontrol techniques, as well as materials and processing options, arekey challenges in making these materials technologically relevant.To address these challenges we have expanded BZ hydrogel materialsoptions, by utilizing a flexible water-based succinimide–aminecoupling reaction for functionalizing bio- and synthetic polymerscontaining primary amines for use in BZ devices. Herein we characterizethe chemomechanical behavior of homogeneous BZ gelatin gels and determinethe range of periods and strains attainable. We highlight the twomost distinctive, and technologically relevant, features of BZ-gelatin,specifically, its ability to be postfunctionalized with Ru(sbpy) aftergel formation and its ability to be patterned into compositionallyheterogeneous composites via physical solidification through the thermalreversibility of its melt-gel transition. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemistry of Materials is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GELATIN KW - ENERGY conversion KW - HYDROGELS KW - DETECTORS KW - SUCCINIMIDES KW - COUPLING reactions (Chemistry) KW - AMINES N1 - Accession Number: 79194286; Smith, Matthew L. 1 Heitfeld, Kevin 1 Slone, Connor 1 Vaia, Richard A. 1; Affiliation: 1: Air Force Research Laboratory, Materials and ManufacturingDirectorate, 2941 Hobson Way, Wright-Patterson AFB, Ohio 45433, United States; Source Info: Aug2012, Vol. 24 Issue 15, p3074; Subject Term: GELATIN; Subject Term: ENERGY conversion; Subject Term: HYDROGELS; Subject Term: DETECTORS; Subject Term: SUCCINIMIDES; Subject Term: COUPLING reactions (Chemistry); Subject Term: AMINES; NAICS/Industry Codes: 311990 All other food manufacturing; NAICS/Industry Codes: 311999 All Other Miscellaneous Food Manufacturing; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79194286&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Putnam, Shawn A. AU - Byrd, Larry W. AU - Briones, Alejandro M. AU - Hanchak, Michael S. AU - Ervin, Jamie S. AU - Jones, John G. T1 - Role of entrapped vapor bubbles during microdroplet evaporation. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/08/13/ VL - 101 IS - 7 M3 - Article SP - 071602 EP - 071602-4 PB - American Institute of Physics SN - 00036951 AB - On superheated surfaces, the air bubble trapped during impingement grows into a larger vapor bubble and oscillates at the frequency predicted for thermally induced capillary waves. In some cases, the entrapped vapor bubble penetrates the droplet interface, leaving a micron-sized coffee-ring pattern of pure fluid. Vapor bubble entrapment, however, does not influence the evaporation rate. This is also true on laser heated surfaces, where a laser can thermally excite capillary waves and induce bubble oscillations over a broad range of frequencies, suggesting that exciting perturbations in a pinned droplets interface is not an effective avenue for enhancing evaporative heat transfer. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BUBBLES KW - OSCILLATIONS KW - RIPPLES (Fluid dynamics) KW - DROPS KW - EVAPORATION (Chemistry) KW - HEAT transfer N1 - Accession Number: 79119893; Putnam, Shawn A. 1,2 Byrd, Larry W. 3 Briones, Alejandro M. 3,4 Hanchak, Michael S. 3,4 Ervin, Jamie S. 3,4 Jones, John G. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Thermal Sciences and Materials Branch, Wright-Patterson AFB, Ohio 45433, 2: Universal Technology Corporation, 1270 N. Fairfield Rd., Dayton, Ohio 45432, 3: Air Force Research Laboratory, Propulsion Directorate, Thermal and Electrochemical Branch, Wright-Patterson AFB, Ohio 45433, 4: University of Dayton Research Institute, Energy and Environmental Engineering Division, Dayton, Ohio 45410,; Source Info: 8/13/2012, Vol. 101 Issue 7, p071602; Subject Term: BUBBLES; Subject Term: OSCILLATIONS; Subject Term: RIPPLES (Fluid dynamics); Subject Term: DROPS; Subject Term: EVAPORATION (Chemistry); Subject Term: HEAT transfer; Number of Pages: 1p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.4745009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79119893&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Judge, P. G. AU - Lockwood, G. W. AU - Radick, R. R. AU - Henry, G. W. AU - Shapiro, A. I. AU - Schmutz, W. AU - Lindsey, C. T1 - Confronting a solar irradiance reconstruction with solar and stellar data. JO - Astronomy & Astrophysics / Astronomie et Astrophysique JF - Astronomy & Astrophysics / Astronomie et Astrophysique Y1 - 2012/08/08/ VL - 544 IS - 2 M3 - Article SP - A88-1 EP - A88-6 SN - 00046361 AB - Context. A recent paper by Shapiro and colleagues (2011, A&A, 529, A67) reconstructs spectral and total irradiance variations of the Sun during the holocene. Aims. In this note, we comment on why their methodology leads to large (0.5%) variations in the solar TSI on century-long time scales, in stark contrast to other reconstructions which have ≲ 0.1% variations. Methods. We examine the amplitude of the irradiance variations from the point of view of both solar and stellar data. Results. Shapiro et al.'s large amplitudes arise from differences between the irradiances computed from models A and C of Fontenla and colleagues, and from their explicit assumption that the radiances of the quiet Sun vary with the cosmic ray modulation potential. We suggest that the upper photosphere, as given by model A, is too cool, and discuss relative contributions of local vs. global dynamos to the magnetism and irradiance of the quiet Sun. We compare the slow (>22 yr) components of the irradiance reconstructions with secular changes in stellar photometric data that span 20 years or less, and find that the Sun, if varying with such large amplitudes, would still lie within the distribution of stellar photometric variations measured over a 10-20 year period. However, the stellar time series are individually too short to see if the reconstructed variations will remain consistent with stellar variations when observed for several decades more. Conclusions. By adopting model A, Shapiro et al. have over-estimated quiet-Sun irradiance variations by about a factor of two, based upon a re-analysis of sub-mm data from the James Clerk Maxwell telescope. But both estimates are within bounds set by current stellar data. It is therefore vital to continue accurate photometry of solar-like stars for at least another decade, to reveal secular and cyclic variations on multi-decadal time scales of direct interest to the Sun. [ABSTRACT FROM AUTHOR] AB - Copyright of Astronomy & Astrophysics / Astronomie et Astrophysique is the property of EDP Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRAL irradiance KW - STELLAR activity KW - ASTRONOMICAL photometry KW - TELESCOPES KW - SUN KW - solar-terrestrial relations KW - Sun: activity KW - Sun: surface magnetism KW - MAXWELL, James Clerk, 1831-1879 N1 - Accession Number: 84731112; Judge, P. G. 1; Email Address: judge@ucar.edu Lockwood, G. W. 2 Radick, R. R. 3 Henry, G. W. 4 Shapiro, A. I. 5 Schmutz, W. 5 Lindsey, C. 6; Affiliation: 1: High Altitude Observatory, National Center for Atmospheric Research, PO Box 3000, Boulder, CO 80307-3000, USA 2: Lowell Observatory, 1400 Mars Hill Road, Flagstaff, AZ 86001, USA 3: Air Force Research Laboratory, National Solar Observatory, Sunspot NM 88349, USA 4: Center of Excellence in Information Systems, Tennessee State University, 3500 John A. Merritt Blvd., Box 9501, Nashville, TN 37209, USA 5: Physikalisch-Meteorologishes Observatorium Davos, World Radiation Center, 7260 Davos Dorf, Switzerland 6: NorthWest Research Associates, 3380 Mitchell Lane, Boulder, CO 80301, USA; Source Info: Aug2012, Vol. 544 Issue 2, pA88-1; Subject Term: SPECTRAL irradiance; Subject Term: STELLAR activity; Subject Term: ASTRONOMICAL photometry; Subject Term: TELESCOPES; Subject Term: SUN; Author-Supplied Keyword: solar-terrestrial relations; Author-Supplied Keyword: Sun: activity; Author-Supplied Keyword: Sun: surface magnetism; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 453999 All other miscellaneous store retailers (except beer and wine-making supplies stores); NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; People: MAXWELL, James Clerk, 1831-1879; Number of Pages: 6p; Document Type: Article L3 - 10.1051/0004-6361/201218903 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84731112&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miracolo, Marissa A. AU - Drozd, Greg T. AU - Jathar, Shantanu H. AU - Presto, Albert A. AU - Lipsky, Eric M. AU - Corporan, Edwin AU - Robinson, Allen L. T1 - Fuel Composition and Secondary Organic Aerosol Formation: Gas-Turbine Exhaust and Alternative Aviation Fuels. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2012/08/07/ VL - 46 IS - 15 M3 - Article SP - 8493 EP - 8501 SN - 0013936X AB - A series of smog chamber experiments were performed to investigate the effects of fuel composition on secondary particulate matter (PM) formation from dilute exhaust from a T63 gas-turbine engine. Tests were performed at idle and cruise loads with the engine fueled on conventional military jet fuel (JP-8), Fischer-Tropsch synthetic jet fuel (FT), and a 50/50 blend of the two fuels. Emissions were sampled into a portable smog chamber and exposed to sunlight or artificial UV light to initiate photo-oxidation. Similar to previous studies, neat FT fuel and a 50/50 FT/JP-8 blend reduced the primary particulate matter emissions compared to neat JP-8. After only one hour of photo-oxidation at typical atmospheric OH levels, the secondary PM production in dilute exhaust exceeded primary PM emissions, except when operating the engine at high load on FT fuel. Therefore, accounting for secondary PM production should be considered when assessing the contribution of gas-turbine engine emissions to ambient PM levels. FT fuel substantially reduced secondary PM formation in dilute exhaust compared to neat JP-8 at both idle and cruise loads. At idle load, the secondary PM formation was reduced by a factor of 20 with the use of neat FT fuel, and a factor of 2 with the use of the blend fuel. At cruise load, the use of FT fuel resulted in no measured formation of secondary PM. In every experiment, the secondary PM was dominated by organics with minor contributions from sulfate when the engine was operated on JP-8 fuel. At both loads, FT fuel produces less secondary organic aerosol than JP-8 because of differences in the composition of the fuels and the resultant emissions. This work indicates that fuel reformulation may be a viable strategy to reduce the contribution of emissions from combustion systems to secondary organic aerosol production and ultimately ambient PM levels. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATMOSPHERIC aerosols KW - PARTICULATE matter KW - GAS turbines -- Exhaust gas KW - AIRPLANES -- Fuel -- Environmental aspects KW - AIRCRAFT gas turbines KW - PHOTOOXIDATION KW - ALTERNATIVE fuels KW - REFORMULATED gasoline KW - AIRCRAFT exhaust emissions KW - ENVIRONMENTAL aspects N1 - Accession Number: 78583237; Miracolo, Marissa A. 1 Drozd, Greg T. 1 Jathar, Shantanu H. 1 Presto, Albert A. 1 Lipsky, Eric M. 2 Corporan, Edwin 3 Robinson, Allen L. 1; Email Address: alr@andrew.cmu.edu; Affiliation: 1: Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States 2: Penn State Greater Allegheny, McKeesport, Pennsylvania 15132, United States 3: U.S. Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio 45460, United States; Source Info: 8/7/2012, Vol. 46 Issue 15, p8493; Subject Term: ATMOSPHERIC aerosols; Subject Term: PARTICULATE matter; Subject Term: GAS turbines -- Exhaust gas; Subject Term: AIRPLANES -- Fuel -- Environmental aspects; Subject Term: AIRCRAFT gas turbines; Subject Term: PHOTOOXIDATION; Subject Term: ALTERNATIVE fuels; Subject Term: REFORMULATED gasoline; Subject Term: AIRCRAFT exhaust emissions; Subject Term: ENVIRONMENTAL aspects; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 454310 Fuel Dealers; NAICS/Industry Codes: 454319 Other fuel dealers; Number of Pages: 9p; Document Type: Article L3 - 10.1021/es300350c UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78583237&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haughey, Sean A. AU - Field, Thomas A. AU - Langer, Judith AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Friedman, Jeffrey F. AU - Viggiano, A. A. T1 - Dissociative electron attachment to C2F5 radicals. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2012/08/07/ VL - 137 IS - 5 M3 - Article SP - 054310 PB - American Institute of Physics SN - 00219606 AB - Dissociative electron attachment to the reactive C2F5 molecular radical has been investigated with two complimentary experimental methods; a single collision beam experiment and a new flowing afterglow Langmuir probe technique. The beam results show that F- is formed close to zero electron energy in dissociative electron attachment to C2F5. The afterglow measurements also show that F- is formed in collisions between electrons and C2F5 molecules with rate constants of 3.7 × 10-9 cm3 s-1 to 4.7 × 10-9 cm3 s-1 at temperatures of 300-600 K. The rate constant increases slowly with increasing temperature, but the rise observed is smaller than the experimental uncertainty of 35%. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISSOCIATION (Chemistry) KW - RADICALS (Chemistry) KW - LANGMUIR probes KW - AFTERGLOW (Physics) KW - COLLISIONS (Physics) KW - OBSERVATION (Scientific method) KW - TEMPERATURE effect N1 - Accession Number: 78334633; Haughey, Sean A. 1 Field, Thomas A. 1 Langer, Judith 2 Shuman, Nicholas S. 3 Miller, Thomas M. 3 Friedman, Jeffrey F. 3 Viggiano, A. A. 3; Affiliation: 1: Centre for Plasma Physics, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, 2: Technische Universitaet Berlin, Institut Optik und Atomare Physik, Hardenbergstr. 36, 10623 Berlin, 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117-5776,; Source Info: 8/7/2012, Vol. 137 Issue 5, p054310; Subject Term: DISSOCIATION (Chemistry); Subject Term: RADICALS (Chemistry); Subject Term: LANGMUIR probes; Subject Term: AFTERGLOW (Physics); Subject Term: COLLISIONS (Physics); Subject Term: OBSERVATION (Scientific method); Subject Term: TEMPERATURE effect; Number of Pages: 8p; Illustrations: 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1063/1.4738759 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78334633&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cao, Yongcan AU - Ren, Wei AU - Egerstedt, Magnus T1 - Distributed containment control with multiple stationary or dynamic leaders in fixed and switching directed networks JO - Automatica JF - Automatica Y1 - 2012/08// VL - 48 IS - 8 M3 - Article SP - 1586 EP - 1597 SN - 00051098 AB - Abstract: In this paper, we study the problem of distributed containment control of a group of mobile autonomous agents with multiple stationary or dynamic leaders under both fixed and switching directed network topologies. First, when the leaders are stationary and all followers share an inertial coordinate frame, we present necessary and sufficient conditions on the fixed or switching directed network topology such that all followers will ultimately converge to the stationary convex hull formed by the stationary leaders for arbitrary initial states in a space of any finite dimension. When the directed network topology is fixed, we partition the (nonsymmetric) Laplacian matrix and explore its properties to derive the convergence results. When the directed network topology is switching, the commonly adopted decoupling technique based on the Kronecker product in a high-dimensional space can no longer be applied and we hence present an important coordinate transformation technique to derive the convergence results. The proposed coordinate transformation technique also has potential applications in other high-dimensional distributed control scenarios and might be used to simplify the analysis of a high-dimensional system to that of a one-dimensional system when the decoupling technique based on the Kronecker product cannot be applied. Second, when the leaders are dynamic and all followers share an inertial coordinate frame, we propose a distributed tracking control algorithm without velocity measurements. When the directed network topology is fixed, we derive conditions on the network topology and the control gain to guarantee that all followers will ultimately converge to the dynamic convex hull formed by the dynamic leaders for arbitrary initial states in a space of any finite dimension. When the directed network topology is switching, we derive conditions on the network topology and the control gain such that all followers will ultimately converge to the minimal hyperrectangle that contains the dynamic leaders and each of its hyperplanes is normal to one axis of the inertial coordinate frame in any high-dimensional space. We also show via some counterexamples that it is, in general, impossible to find distribute containment control algorithms without velocity measurements to guarantee that all followers will ultimately converge to the convex hull formed by the dynamic leaders under a switching network topology in a high-dimensional space. Simulation results are presented as a proof of concept. [Copyright &y& Elsevier] AB - Copyright of Automatica is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISTRIBUTED algorithms KW - CONTROL theory (Mathematics) KW - STATIONARY processes KW - DIRECTED graphs KW - COORDINATE transformations KW - CONVEX domains KW - STOCHASTIC convergence KW - Consensus KW - Containment control KW - Cooperative control KW - Multi-agent systems N1 - Accession Number: 78144911; Cao, Yongcan 1,2; Email Address: yongcan.cao.ctr@wpafb.af.mil Ren, Wei 1; Email Address: ren@ee.ucr.edu Egerstedt, Magnus 3; Email Address: magnus@ece.gatech.edu; Affiliation: 1: Department of Electrical Engineering, University of California, Riverside, United States 2: Control Science Center of Excellence, Air Force Research Laboratory, Wright-Patterson AFB, United States 3: School of Electrical and Computer Engineering, Georgia Institute of Technology, United States; Source Info: Aug2012, Vol. 48 Issue 8, p1586; Subject Term: DISTRIBUTED algorithms; Subject Term: CONTROL theory (Mathematics); Subject Term: STATIONARY processes; Subject Term: DIRECTED graphs; Subject Term: COORDINATE transformations; Subject Term: CONVEX domains; Subject Term: STOCHASTIC convergence; Author-Supplied Keyword: Consensus; Author-Supplied Keyword: Containment control; Author-Supplied Keyword: Cooperative control; Author-Supplied Keyword: Multi-agent systems; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.automatica.2012.05.071 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78144911&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stöhr, Michael AU - Boxx, Isaac AU - Carter, Campbell D. AU - Meier, Wolfgang T1 - Experimental study of vortex-flame interaction in a gas turbine model combustor JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/08// VL - 159 IS - 8 M3 - Article SP - 2636 EP - 2649 SN - 00102180 AB - Abstract: The interaction of a helical precessing vortex core (PVC) with turbulent swirl flames in a gas turbine model combustor is studied experimentally. The combustor is operated with air and methane at atmospheric pressure and thermal powers from 10 to 35kW. The flow field is measured using particle image velocimetry (PIV), and the dominant unsteady vortex structures are determined using proper orthogonal decomposition. For all operating conditions, a PVC is detected in the shear layer of the inner recirculation zone (IRZ). In addition, a co-rotating helical vortex in the outer shear layer (OSL) and a central vortex originating in the exhaust tube are found. OH chemiluminescence (CL) images show that the flames are mainly stabilized in the inner shear layer (ISL), where also the PVC is located. Phase-averaged images of OH-CL show that for all conditions, a major part of heat release takes place in a helical zone that is coupled to the PVC. The mechanisms of the interaction between PVC and flame are then studied for the case P =10kW using simultaneous PIV and OH-PLIF measurements with a repetition rate of 5kHz. The measurements show that the PVC causes a regular sequence of flame roll-up, mixing of burned and unburned gas, and subsequent ignition of the mixture in the ISL. These effects are directly linked to the periodic vortex motions. A phase-averaged analysis of the flow field further shows that the PVC induces an unsteady lower stagnation point that is not present in the average flow field. The motion of the stagnation point is linked to the periodic precession of the PVC. Near this point burned and unburned gas collide frontally and a significant amount of heat release takes place. The flame dynamics near this point is also coupled to the PVC. In this way, a part of the reaction zone is periodically drawn from the stagnation point into the ISL, and thus serves as an ignition source for the reactions in this layer. In total, the effects in the ISL and at the stagnation point showed that the PVC plays an essential role in the stabilization mechanism of the turbulent swirl flames. In contrast to the PVC, the vortices in the OSL and near the exhaust tube have no direct effect on the flame since they are located outside the flame zone. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLAME KW - GAS turbines -- Combustion chambers KW - MATHEMATICAL models KW - ATMOSPHERIC pressure KW - PARTICLE image velocimetry KW - CHEMILUMINESCENCE KW - SHEAR flow KW - VORTEX motion KW - Gas turbine combustion KW - Laser diagnostics KW - Precessing vortex core KW - Turbulent swirl flame N1 - Accession Number: 76617813; Stöhr, Michael 1; Email Address: michael.stoehr@dlr.de Boxx, Isaac 1 Carter, Campbell D. 2 Meier, Wolfgang 1; Affiliation: 1: German Aerospace Center (DLR), Institute of Combustion Technology, Pfaffenwaldring 38-40, 70569 Stuttgart, Germany 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: Aug2012, Vol. 159 Issue 8, p2636; Subject Term: FLAME; Subject Term: GAS turbines -- Combustion chambers; Subject Term: MATHEMATICAL models; Subject Term: ATMOSPHERIC pressure; Subject Term: PARTICLE image velocimetry; Subject Term: CHEMILUMINESCENCE; Subject Term: SHEAR flow; Subject Term: VORTEX motion; Author-Supplied Keyword: Gas turbine combustion; Author-Supplied Keyword: Laser diagnostics; Author-Supplied Keyword: Precessing vortex core; Author-Supplied Keyword: Turbulent swirl flame; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.combustflame.2012.03.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76617813&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Berger, Matthew AU - Silva, Claudio T. T1 - Nonrigid Matching of Undersampled Shapes via Medial Diffusion. JO - Computer Graphics Forum JF - Computer Graphics Forum Y1 - 2012/08// VL - 31 IS - 5 M3 - Article SP - 1587 EP - 1596 PB - Wiley-Blackwell SN - 01677055 AB - We introduce medial diffusion for the matching of undersampled shapes undergoing a nonrigid deformation. We construct a diffusion process with respect to the medial axis of a shape, and use the quantity of heat diffusion as a measure which is both tolerant of missing data and approximately invariant to nonrigid deformations. A notable aspect of our approach is that we do not define the diffusion on the shape's medial axis, or similar medial representation. Instead, we construct the diffusion process directly on the shape. This permits the diffusion process to better capture surface features, such as varying spherical and cylindrical parts, as well as combine with other surface-based diffusion processes. We show how to use medial diffusion to detect intrinsic symmetries, and for computing correspondences between pairs of shapes, wherein shapes contain substantial missing data. [ABSTRACT FROM AUTHOR] AB - Copyright of Computer Graphics Forum is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEFORMATIONS (Mechanics) KW - TECHNOLOGY transfer KW - ELASTIC solids KW - STRUCTURAL failures KW - DEFORMATION of surfaces KW - CONTINUUM mechanics KW - I.3.3 [Computer Graphics]: Picture/Image Generation-Line and curve generation N1 - Accession Number: 78321732; Berger, Matthew 1,2 Silva, Claudio T. 3; Affiliation: 1: University of Utah 2: Air Force Research Laboratory, Information Directorate 3: Polytechnic Institute of New York University; Source Info: Aug2012, Vol. 31 Issue 5, p1587; Subject Term: DEFORMATIONS (Mechanics); Subject Term: TECHNOLOGY transfer; Subject Term: ELASTIC solids; Subject Term: STRUCTURAL failures; Subject Term: DEFORMATION of surfaces; Subject Term: CONTINUUM mechanics; Author-Supplied Keyword: I.3.3 [Computer Graphics]: Picture/Image Generation-Line and curve generation; Number of Pages: 10p; Illustrations: 8 Color Photographs, 2 Diagrams, 1 Graph; Document Type: Article L3 - 10.1111/j.1467-8659.2012.03164.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78321732&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gupta, P. AU - Pereira, J.P. AU - Kim, D.-J. AU - Duarte, C.A. AU - Eason, T. T1 - Analysis of three-dimensional fracture mechanics problems: A non-intrusive approach using a generalized finite element method JO - Engineering Fracture Mechanics JF - Engineering Fracture Mechanics Y1 - 2012/08// VL - 90 M3 - Article SP - 41 EP - 64 SN - 00137944 AB - Abstract: This paper shows that the generalized finite element method with global–local enrichment functions (GFEMgl) can be implemented non-intrusively in existing closed-source FEM software as an add-on module. The GFEMgl is based on the solution of interdependent global (structural) and local (crack) scale problems. In the approach presented here, an initial global scale problem is solved by a commercial finite element analysis software, local problems containing 3-D fractures are solved by an hp-adaptive GFEM software and an enriched global scale problem is solved by a combination of the FEM and GFEM softwares. The interactions between the solvers are limited to the exchange of load and solution vectors and does not require the introduction of user subroutines to existing FEM software. As a results, the user can benefit from built-in features of available commercial grade FEM software while adding the benefits of the GFEM for this class of problems. Several three-dimensional fracture mechanics problems aimed at investigating the applicability and accuracy of the proposed two-solver methodology are presented. [Copyright &y& Elsevier] AB - Copyright of Engineering Fracture Mechanics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRACTURE mechanics KW - FINITE element method KW - PROBLEM solving KW - MATHEMATICAL analysis KW - COMPUTER software KW - SUBROUTINES (Computer programs) KW - Fracture mechanics KW - Generalized finite element method KW - Global–local analysis KW - Multiscale problem KW - Schur complement N1 - Accession Number: 76495558; Gupta, P. 1 Pereira, J.P. 1 Kim, D.-J. 2 Duarte, C.A. 1; Email Address: caduarte@illinois.edu Eason, T. 3; Affiliation: 1: Department of Civil and Environmental Engineering, University of Illinois at Urbana–Champaign, Newmark Laboratory, 205 North Mathews Avenue, Urbana, IL 61801, USA 2: Department of Architectural Engineering, Kyung Hee University, Engineering Building, 1 Sochon-Dong Kihung-Gu, Yongin, Kyunggi-Do 446-701, Republic of Korea 3: U.S. Air Force Research Laboratory, Air Vehicles Directorate, WPAFB, Dayton, OH, USA; Source Info: Aug2012, Vol. 90, p41; Subject Term: FRACTURE mechanics; Subject Term: FINITE element method; Subject Term: PROBLEM solving; Subject Term: MATHEMATICAL analysis; Subject Term: COMPUTER software; Subject Term: SUBROUTINES (Computer programs); Author-Supplied Keyword: Fracture mechanics; Author-Supplied Keyword: Generalized finite element method; Author-Supplied Keyword: Global–local analysis; Author-Supplied Keyword: Multiscale problem; Author-Supplied Keyword: Schur complement; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); Number of Pages: 24p; Document Type: Article L3 - 10.1016/j.engfracmech.2012.04.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76495558&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hui, Xin AU - Kumar, Kamal AU - Sung, Chih-Jen AU - Edwards, Tim AU - Gardner, Dylan T1 - Experimental studies on the combustion characteristics of alternative jet fuels JO - Fuel JF - Fuel Y1 - 2012/08// VL - 98 M3 - Article SP - 176 EP - 182 SN - 00162361 AB - Abstract: Conventional Jet-A and six alternative jet fuels, including three Fischer–Tropsch “Synthetic Paraffinic Kerosene” (SPK) fuels and three “Hydrotreated Renewable Jet” (HRJ) fuels, have been experimentally investigated to obtain their fundamental combustion characteristics in terms of Derived Cetane Number (DCN), autoignition response, laminar flame speed, and extinction stretch rate for premixed combustion. The ignition delay times and DCNs for each jet fuel and selected binary blends of Jet-A and alternative jet fuel were determined by using a Fuel Ignition Tester in accordance with the ASTM D7170 method. In addition, the autoignition response for fuel/air mixtures was recorded and compared in a heated Rapid Compression Machine, conducted at an air-to-fuel mass ratio of 13 and under a compressed pressure of 22bar. By changing the compression ratio and initial temperature, the trend of autoignition behavior over a range of compressed temperatures was studied. Atmospheric laminar flame speeds and extinction stretch rates were also measured in the premixed twin-flame configuration by using a counterflow burner. The flame data at two unburned mixture temperatures of 400K and 470K were reported respectively over an equivalence ratio range of ϕ =0.7–1.4 for the laminar flame speeds and of ϕ =0.9–1.6 for the extinction stretch rate measurements. The comparison of fundamental combustion properties for Jet-A and various alternative jet fuels provides insights into understanding the impact of fuel properties on combustion performance and developing a cost-effective combustion testing program that includes fundamental characterization. [Copyright &y& Elsevier] AB - Copyright of Fuel is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMBUSTION KW - ALTERNATIVE fuels KW - FISCHER-Tropsch process KW - KEROSENE as fuel KW - RENEWABLE energy sources KW - TEMPERATURE effect KW - Alternative fuels KW - Autoignition KW - Derived Cetane Number KW - Extinction limit KW - Laminar flame speed N1 - Accession Number: 76495592; Hui, Xin 1 Kumar, Kamal 2; Email Address: kamal@engr.uconn.edu Sung, Chih-Jen 2 Edwards, Tim 3 Gardner, Dylan 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering Case Western Reserve University, Cleveland, OH 44106, USA 2: Department of Mechanical Engineering, University of Connecticut, Storrs, CT 06269, USA 3: US Air Force Research Laboratory, Wright–Patterson Air Force Base, OH 45433, USA; Source Info: Aug2012, Vol. 98, p176; Subject Term: COMBUSTION; Subject Term: ALTERNATIVE fuels; Subject Term: FISCHER-Tropsch process; Subject Term: KEROSENE as fuel; Subject Term: RENEWABLE energy sources; Subject Term: TEMPERATURE effect; Author-Supplied Keyword: Alternative fuels; Author-Supplied Keyword: Autoignition; Author-Supplied Keyword: Derived Cetane Number; Author-Supplied Keyword: Extinction limit; Author-Supplied Keyword: Laminar flame speed; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 454319 Other fuel dealers; NAICS/Industry Codes: 454310 Fuel Dealers; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.fuel.2012.03.040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76495592&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heltzel, Alex AU - Mishra, Columbia AU - Ruoff, Rodney S. AU - Fleming, Andrew T1 - Analysis of an Ultrathin Graphite-Based Compact Heat Exchanger. JO - Heat Transfer Engineering JF - Heat Transfer Engineering Y1 - 2012/08// VL - 33 IS - 11 M3 - Article SP - 947 EP - 956 PB - Taylor & Francis Ltd SN - 01457632 AB - The emerging production of ultrathin graphite material is applied to thermal management in a numerical comparison of aluminum and graphite-based plate-fin heat exchangers. Considering anisotropic thermal conductivity in which out-of-plane transport is about two orders of magnitude lower than in-plane values, the ultrathin graphite-based solution outperforms aluminum by rejecting up to 20% more heat on a volumetric basis. Thermal and hydraulic performance is characterized for both solutions over a range of airflow rates in a notional water/air device. Laminar through fully turbulent regimes are considered. Steady and unsteady three-dimensional (3-D) conjugate simulations reveal a faster equilibration rate for the ultrathin graphite-based solution, minimizing thermal lag that must be accounted for in on-demand electronics cooling. Fin optimization studies predict equivalent conductance with graphite at one-tenth the thickness of aluminum. The combination of improved heat rejection, rapid response rate, and low material density make an ultrathin graphite-based solution uniquely suited to aerospace thermal management. [ABSTRACT FROM AUTHOR] AB - Copyright of Heat Transfer Engineering is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT exchangers KW - GRAPHITE KW - ALUMINUM KW - THERMAL conductivity KW - COOLING N1 - Accession Number: 73928445; Heltzel, Alex 1; Email Address: heltzel@pcka.com Mishra, Columbia 2 Ruoff, Rodney S. 2,3 Fleming, Andrew 4; Affiliation: 1: PC Krause and Associates, Inc., USA 2: Department of Mechanical Engineering, University of Texas at Austin, USA 3: Texas Materials Institute, University of Texas at Austin, USA 4: U.S. Air Force Research Laboratory, Wright–Patterson Air Force Base, USA; Source Info: Aug2012, Vol. 33 Issue 11, p947; Subject Term: HEAT exchangers; Subject Term: GRAPHITE; Subject Term: ALUMINUM; Subject Term: THERMAL conductivity; Subject Term: COOLING; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 332410 Power Boiler and Heat Exchanger Manufacturing; Number of Pages: 10p; Illustrations: 1 Diagram, 10 Graphs; Document Type: Article L3 - 10.1080/01457632.2012.654727 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73928445&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adiga, Umesh AU - Bell, Brian L. AU - Ponomareva, Larissa AU - Taylor, Debbie AU - Saldanha, Roland AU - Nelson, Sandra AU - Lamkin, Thomas J. T1 - Mapping Infected Cell Phenotype. JO - IEEE Transactions on Biomedical Engineering JF - IEEE Transactions on Biomedical Engineering Y1 - 2012/08// VL - 59 IS - 8 M3 - Article SP - 2362 EP - 2371 SN - 00189294 AB - Quantitative modeling of the phenotypic changes in the host cell during the bacterial infection makes it possible to explore an empirical relation between the infection stages and the quantifiable host-cell phenotype. A statistically reliable model of this relation can facilitate therapeutic defense against threats due to natural and genetically engineered bacterium. In the preliminary experiment, we have collected several thousand cell images over a period of 72 h of infection with a 2-h sampling frequency that covers various stages of infection by Francisella tularenesis (Ft). Segmentation of macrophages in images was accomplished using a fully automatic, parallel region growing technique. Over two thousand feature descriptors for the host cell were calculated. Multidimensional scaling, followed by hierarchical clustering, was used to group the cells. Preliminary results show that the host-cell phenotype, as defined by the set of measureable features, groups into different classes that can be mapped to the stages of infection. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Biomedical Engineering is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHENOTYPE KW - RESEARCH KW - BACTERIAL diseases KW - INFECTION KW - QUANTITATIVE research KW - FRANCISELLA tularensis KW - IMAGE analysis KW - Biodefense KW - bioimaging KW - Fluorescence KW - high content screening KW - image analytics KW - Image segmentation KW - Imaging KW - infection KW - Manuals KW - Microorganisms KW - Shape N1 - Accession Number: 77875266; Adiga, Umesh 1 Bell, Brian L. 2 Ponomareva, Larissa 3 Taylor, Debbie 4 Saldanha, Roland 1 Nelson, Sandra 3 Lamkin, Thomas J. 4; Affiliation: 1: UES, Inc., Dayton, USA 2: Bristol Myers Squib, Syracuse, USA 3: Drug Discovery Center, University of Cincinnati, Cincinnati, USA 4: Air Force Research Laboratory , Wright Patterson Air Force Base, Dayton, USA; Source Info: Aug2012, Vol. 59 Issue 8, p2362; Subject Term: PHENOTYPE; Subject Term: RESEARCH; Subject Term: BACTERIAL diseases; Subject Term: INFECTION; Subject Term: QUANTITATIVE research; Subject Term: FRANCISELLA tularensis; Subject Term: IMAGE analysis; Author-Supplied Keyword: Biodefense; Author-Supplied Keyword: bioimaging; Author-Supplied Keyword: Fluorescence; Author-Supplied Keyword: high content screening; Author-Supplied Keyword: image analytics; Author-Supplied Keyword: Image segmentation; Author-Supplied Keyword: Imaging; Author-Supplied Keyword: infection; Author-Supplied Keyword: Manuals; Author-Supplied Keyword: Microorganisms; Author-Supplied Keyword: Shape; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TBME.2012.2204746 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77875266&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fleming, Timothy P. AU - Lambrecht, Michael R. AU - Mardahl, Peter J. AU - Keisling, John D. T1 - A High-Efficiency Megawatt-Class Nonrelativistic Magnetron. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2012/08// VL - 40 IS - 8 M3 - Article SP - 2112 EP - 2118 SN - 00933813 AB - Numerical simulations of a prototype conventional magnetron capable of an RF output power exceeding 1.3 MW at peak efficiency greater than 87% for relatively low diode voltages of \sim40 kV are presented. Virtual prototyping of the magnetron design is carried out on massively parallel architecture utilizing the 3-D improved concurrent electromagnetic particle-in-cell code. Simulations demonstrate that the magnetron is capable of stable and robust oscillations in the \pi mode at saturation with negligible mode competition at 912 MHz over a range of magnetic fields extending from B = 0.18\ \T to B = 0.275\ \T and voltages ranging from 37–56 kV. RF Output power ranged from 400 kW–1.5 MW over these voltages with efficiencies typically above 85%. Oscillations in the \pi mode follow the Buneman–Hartree resonance curve for all magnetic fields sampled with a window of \pi-mode oscillations typically extending over 6 kV. Electron back bombardment of the cathode as well as collisions with the slow wave structure acted as major loss mechanisms. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - ELECTRIC oscillators KW - MICROWAVES KW - ELECTRIC waves KW - DIODES KW - Anodes KW - Cathodes KW - Conventional magnetron KW - high-power microwave KW - Magnetic resonance KW - Magnetic resonance imaging KW - Magnetomechanical effects KW - mode competition KW - Radio frequency KW - Saturation magnetization N1 - Accession Number: 79890349; Fleming, Timothy P. 1 Lambrecht, Michael R. 1 Mardahl, Peter J. 1 Keisling, John D. 2; Affiliation: 1: Air Force Research Laboratory, Albuquerque, NM, USA 2: Science Applications International Corporation, McLean, VA, USA; Source Info: Aug2012, Vol. 40 Issue 8, p2112; Subject Term: MAGNETRONS; Subject Term: ELECTRIC oscillators; Subject Term: MICROWAVES; Subject Term: ELECTRIC waves; Subject Term: DIODES; Author-Supplied Keyword: Anodes; Author-Supplied Keyword: Cathodes; Author-Supplied Keyword: Conventional magnetron; Author-Supplied Keyword: high-power microwave; Author-Supplied Keyword: Magnetic resonance; Author-Supplied Keyword: Magnetic resonance imaging; Author-Supplied Keyword: Magnetomechanical effects; Author-Supplied Keyword: mode competition; Author-Supplied Keyword: Radio frequency; Author-Supplied Keyword: Saturation magnetization; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TPS.2012.2205274 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79890349&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Andreev, Andrey D. AU - Hendricks, Kyle J. T1 - Metamaterial-Like Cathodes in Multicavity Magnetrons. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2012/08// VL - 40 IS - 8 M3 - Article SP - 2267 EP - 2273 SN - 00933813 AB - This paper presents the results of computer simulations performed for exploring and developing new methods, which may allow enhancing operational parameters of multicavity magnetrons through using the metal-thin-wire (MTW) and the metal-split-ring metamaterial-like structures as cold (nonthermionic) cathodes. It is demonstrated by the particle-in-cell simulations of a generic ten-vane nonrelativistic ultrahigh-frequency-band heavily strapped magnetron that the output microwave power and the start-up time of this magnetron are significantly improved by replacing either a solid or a transparent cold cathode by, for example, a bulk MTW metamaterial-like structure formed as an array of individual wires directed parallel to the axis of the magnetron (rodded cathode). [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER simulation KW - MAGNETRONS KW - ELECTRIC oscillators KW - METAMATERIALS KW - COMPOSITE materials KW - CATHODES KW - Anodes KW - Cathode KW - Cathodes KW - Geometry KW - magnetron KW - Magnetrons KW - metamaterials KW - microwaves KW - Solid modeling KW - Solids KW - Wires N1 - Accession Number: 79890352; Andreev, Andrey D. 1 Hendricks, Kyle J. 2; Affiliation: 1: Raytheon Missile Systems, Advanced Security and Directed Energy Systems, Directed Energy Division, Raytheon Ktech, Albuquerque, NM, USA 2: High-Power Microwave Division, Directed Energy Directorate, Air Force Research Laboratory (AFRL/RDHPS), Kirtland Air Force Base, NM, USA; Source Info: Aug2012, Vol. 40 Issue 8, p2267; Subject Term: COMPUTER simulation; Subject Term: MAGNETRONS; Subject Term: ELECTRIC oscillators; Subject Term: METAMATERIALS; Subject Term: COMPOSITE materials; Subject Term: CATHODES; Author-Supplied Keyword: Anodes; Author-Supplied Keyword: Cathode; Author-Supplied Keyword: Cathodes; Author-Supplied Keyword: Geometry; Author-Supplied Keyword: magnetron; Author-Supplied Keyword: Magnetrons; Author-Supplied Keyword: metamaterials; Author-Supplied Keyword: microwaves; Author-Supplied Keyword: Solid modeling; Author-Supplied Keyword: Solids; Author-Supplied Keyword: Wires; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TPS.2012.2206615 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79890352&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stinco, P. AU - Greco, M.S. AU - Gini, F. AU - Rangaswamy, M. T1 - Ambiguity function and Cramér-Rao bounds for universal mobile telecommunications system-based passive coherent location systems. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2012/08// VL - 6 IS - 7 M3 - Article SP - 668 EP - 678 PB - Institution of Engineering & Technology SN - 17518784 AB - The concerns are with the calculation of monostatic and bistatic ambiguity function (AF) of a quadrature phase shift keying (QPSK) signal where the pulses are shaped with a root raised cosine (RRC) filter. The monostatic and bistatic modified Cramér-Rao lower bounds (MCRLBs) for the estimation of target range and velocity are also derived and analysed. The QPSK modulation is used in the downlink of a universal mobile telecommunications system (UMTS) base station, hence the results of our analysis provide a useful tool to asses the performance of a passive coherent location (PCL) system where the non-co-operative transmitter of opportunity is a UMTS base station. The actual growing coverage of UMTS signals on the international territory makes multistatic radar configuration feasible, therefore these results can also be exploited for the dynamical selection of the transmitter in a multistatic radar system where multiple UMTS base stations are used. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BOUNDS (Mathematics) KW - NUMERICAL calculations KW - UNIVERSAL Mobile Telecommunications System KW - RADAR transmitters KW - PERFORMANCE evaluation KW - PHASE shift keying N1 - Accession Number: 78083890; Stinco, P. 1 Greco, M.S. 1 Gini, F. 1 Rangaswamy, M. 2; Affiliation: 1: University of Pisa, Dip. di Ingegneria dell'Informazione, Pisa, Italia 2: Air Force Research Laboratory, USA; Source Info: Aug2012, Vol. 6 Issue 7, p668; Subject Term: BOUNDS (Mathematics); Subject Term: NUMERICAL calculations; Subject Term: UNIVERSAL Mobile Telecommunications System; Subject Term: RADAR transmitters; Subject Term: PERFORMANCE evaluation; Subject Term: PHASE shift keying; Number of Pages: 11p; Document Type: Article L3 - 10.1049/iet-rsn.2011.0390 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78083890&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tassev, V. AU - Snure, M. AU - Peterson, R. AU - Bedford, R. AU - Bliss, D. AU - Bryant, G. AU - Mann, M. AU - Goodhue, W. AU - Vangala, S. AU - Termkoa, K. AU - Lin, A. AU - Harris, J.S. AU - Fejer, M.M. AU - Yapp, C. AU - Tetlak, S. T1 - Epitaxial growth of quasi-phase matched GaP for nonlinear applications: Systematic process improvements JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2012/08// VL - 352 IS - 1 M3 - Article SP - 72 EP - 77 SN - 00220248 AB - Abstract: This article presents recent results related to development of thick quasi-phase-matched GaP for incorporation in high power sources radiating in the mid-infrared. The focus was on increasing the growth rate and layer thickness of orientation patterned GaP, while ensuring equal vertical deposition rates and rectangular shape of the domain mesas for both opposite crystallographic lattice orientations. Additionally, we present solutions which confine the presence of uncontrollable hillock growth. The experiments were conducted in a hot-wall horizontal quartz reactor using a standard low-pressure hydride vapor phase epitaxial (HVPE) process. GaP was grown on bare, half-patterned (HP) and orientation-patterned (OP) templates fabricated on (100) GaP and (100) misoriented 4° towards (111)B substrates. The domains were oriented either along the [011] or the [011̄] direction. We compared a sub-lattice inversion MBE assisted process and a wafer fusion bonding technique to create OP templates. When the growth was performed on bare material, the properly chosen growth conditions resulted in reproducible growth of up to 370μm thick layers with high optical, surface and structural quality, grown at a growth rate of 100μm/h in one-hour long experiments and 45μm/h for 8-h long growths. The presence of a core inside the hillocks growing on the layer surface was eliminated. The hillocks were flattened and widened, which allowed often a single hillock to span several domains with alternating opposite crystallographic orientations, when growth was performed on patterned templates. The HP templates were used to determine the optimal substrate and pattern orientations prior to starting growth experiments on OP-templates. As an additional result they revealed that growth could be hillock-free for certain orientations. Growths on OP templates achieved stable growth rates of 50–70μm/h with domain walls propagating vertically. The growth followed the periodicity of the initial pattern. The maximal thickness achieved to date on OP GaP is about 350μm. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPITAXY KW - GALLIUM phosphide KW - NONLINEAR models (Statistics) KW - SEMICONDUCTORS KW - INFRARED radiation KW - THICKNESS measurement KW - COMPARATIVE studies KW - CHEMICAL templates KW - GALLIUM phosphide epitaxy KW - A3. Hydride vapor phase epitaxy KW - B1. Gallium phosphide and gallium arsenide KW - B2. Nonlinear optic materials N1 - Accession Number: 77452619; Tassev, V. 1; Email Address: Vladimir.Tassev@hanscom.af.mil Snure, M. 1 Peterson, R. 1 Bedford, R. 1 Bliss, D. 1 Bryant, G. 1 Mann, M. 1 Goodhue, W. 2 Vangala, S. 2 Termkoa, K. 2 Lin, A. 3 Harris, J.S. 3 Fejer, M.M. 3 Yapp, C. 4 Tetlak, S. 5; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright Patterson AFB, OH 45433, USA 2: University of Massachusetts, Photonic Center, Lowell, MA 01854, USA 3: Stanford University, Stanford, CA 94305, USA 4: Solid State Scientific Corporation, Hollis NH 03049, USA 5: Wyle Laboratories, Aerospace group, Dayton, OH 45431, USA; Source Info: Aug2012, Vol. 352 Issue 1, p72; Subject Term: EPITAXY; Subject Term: GALLIUM phosphide; Subject Term: NONLINEAR models (Statistics); Subject Term: SEMICONDUCTORS; Subject Term: INFRARED radiation; Subject Term: THICKNESS measurement; Subject Term: COMPARATIVE studies; Subject Term: CHEMICAL templates; Subject Term: GALLIUM phosphide epitaxy; Author-Supplied Keyword: A3. Hydride vapor phase epitaxy; Author-Supplied Keyword: B1. Gallium phosphide and gallium arsenide; Author-Supplied Keyword: B2. Nonlinear optic materials; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jcrysgro.2011.12.077 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77452619&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Snure, M. AU - Jiménez, J. AU - Hortelano, V. AU - Swider, S. AU - Mann, M. AU - Tassev, V. AU - Lynch, C. AU - Bliss, D. T1 - Impurity incorporation in orientation patterned GaAs grown by low pressure HVPE JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2012/08// VL - 352 IS - 1 M3 - Article SP - 258 EP - 261 SN - 00220248 AB - Abstract: Orientation-patterned GaAs (OP-GaAs) has shown promise as an efficient frequency-shifted laser source over the range of 2–12μm. In order to make OP-GaAs a viable source, efficiency and output power must be significantly increased, which requires minimizing major sources of loss. Low pressure HVPE has been adopted as the most suitable technique for regrowth of thick high quality GaAs layers on OP templates. We have explored process parameters in bulk and OP material to identify and control the sources of point defects, a key contributor to optical losses. Growth on OP templates with periodic [001] and [00−1] domains results in domain specific surface orientation, which should have inhomogeneous defect incorporation. Hall measurements, SIMS depth profiling, and cathodoluminescence (CL) were used to identify point defects in bulk and OP-GaAs. It was found that Si impurities are the primary source of donors, while VGa were identified as the primary source of acceptors. In order to study the incorporation of impurities in OP-GaAs samples, we intentionally doped samples with Si to increase CL and SIMS detectability. Spatially resolved CL and SIMS revealed regions with significant differences in the defect concentration, which can affect device output. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM arsenide semiconductors KW - EPITAXY KW - LOW pressure (Science) KW - LASER beams KW - HYDRIDES KW - CHEMICAL templates KW - CATHODOLUMINESCENCE KW - HALL effect KW - A1. Point defects KW - A3. Hydride vapor phase epitaxy KW - B2. Nonlinear optic materials KW - B2. Semiconducting Gallium arsenide N1 - Accession Number: 77452661; Snure, M. 1; Email Address: michael.snure@wpafb.af.mil Jiménez, J. 2 Hortelano, V. 2 Swider, S. 3 Mann, M. 1 Tassev, V. 1 Lynch, C. 4 Bliss, D. 1; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright–Patterson AFB, 2241 Avionics circle, OH 45433, United States 2: OptronLab, Universidad de Valladolid, Valladolid, Spain 3: Cape Simulations, Natick, MA, United States 4: Photonic Products Group, Inc, Northvale, NJ, United States; Source Info: Aug2012, Vol. 352 Issue 1, p258; Subject Term: GALLIUM arsenide semiconductors; Subject Term: EPITAXY; Subject Term: LOW pressure (Science); Subject Term: LASER beams; Subject Term: HYDRIDES; Subject Term: CHEMICAL templates; Subject Term: CATHODOLUMINESCENCE; Subject Term: HALL effect; Author-Supplied Keyword: A1. Point defects; Author-Supplied Keyword: A3. Hydride vapor phase epitaxy; Author-Supplied Keyword: B2. Nonlinear optic materials; Author-Supplied Keyword: B2. Semiconducting Gallium arsenide; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jcrysgro.2011.11.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77452661&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Klein, Martina I. AU - Warm, Joel S. AU - Riley, Michael A. AU - Matthews, Gerald AU - Doarn, Charles AU - Donovan, James F. AU - Gaitonde, Krishnanath T1 - Mental Workload and Stress Perceived by Novice Operators in the Laparoscopic and Robotic Minimally Invasive Surgical Interfaces. JO - Journal of Endourology JF - Journal of Endourology Y1 - 2012/08// VL - 26 IS - 8 M3 - Article SP - 1089 EP - 1094 SN - 08927790 AB - Background and Purpose: High levels of mental workload and stress are experienced by surgeons in the laparoscopic environment. The da Vinci® surgical robot was developed to provide surgeons a more user-friendly interface while maintaining the patient benefits associated with laparoscopy. This study examined whether the da Vinci robot reduces mental workload and stress in novice medical students. A detailed understanding of trainees' mental workload and mental stress experiences can aid in the development of training programs that are aimed at facilitating the acquisition of laparoscopic and robotic surgery skills. Materials and Methods: Fifteen novice first-year medical students performed a standard peg-transfer task at a laparoscopic simulator and the da Vinci Surgical System. Mental workload and stress were assessed with the Multiple Resources Questionnaire (MRQ) and the Dundee Stress State Questionnaire (DSSQ), respectively. Results: Students' mental workload profiles were identical with the two surgical systems and replicated previous MRQ results reported with the laparoscopic system showing high levels of workload. Students experienced a better stress profile with the robotic system, however, when compared wih the laparoscopic system. Conclusion: Our study shows that novice medical students perceive less stress when working with the robotic surgical interface than with the laparoscopic surgery interface. The MRQ and the DSSQ are valuable tools for identifying mental workload and mental stress in the laparoscopic and robotic surgery environments. This information may be useful for facilitating the acquisition of laparoscopic and robotic surgery skills. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Endourology is the property of Mary Ann Liebert, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 89667650; Klein, Martina I. 1 Warm, Joel S. 2 Riley, Michael A. 3 Matthews, Gerald 3 Doarn, Charles 4 Donovan, James F. 5 Gaitonde, Krishnanath 5; Affiliation: 1: Department of Psychology, Texas Tech University, Lubbock, Texas. 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio. 3: Department of Psychology, University of Cincinnati, Cincinnati, Ohio. 4: Department of Family and Community Medicine, University of Cincinnati, Cincinnati, Ohio. 5: Department of Urology, University of Cincinnati, Cincinnati, Ohio.; Source Info: Aug2012, Vol. 26 Issue 8, p1089; Number of Pages: 6p; Document Type: Article L3 - 10.1089/end.2011.0641 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89667650&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ghommem, Mehdi AU - Hajj, Muhammad R. AU - Mook, Dean T. AU - Stanford, Bret K. AU - Beran, Philip S. AU - Snyder, Richard D. AU - Watson, Layne T. T1 - Global optimization of actively morphing flapping wings JO - Journal of Fluids & Structures JF - Journal of Fluids & Structures Y1 - 2012/08// VL - 33 M3 - Article SP - 210 EP - 228 SN - 08899746 AB - Abstract: We consider active shape morphing to optimize the flight performance of flapping wings. To this end, we combine a three-dimensional version of the unsteady vortex lattice method (UVLM) with a deterministic global optimization algorithm to identify the optimal kinematics that maximize the propulsive efficiency under lift and thrust constraints. The UVLM applies only to incompressible, inviscid flows where the separation lines are known a priori. Two types of morphing parameterization are investigated here—trigonometric and spline-based. The results show that the spline-based morphing, which requires specification of more design variables, yields a significant improvement in terms of propulsive efficiency. Furthermore, we remark that the average value of the lift coefficient in the optimized kinematics remained equal to the value in the baseline case (without morphing). This indicates that morphing is most efficiently used to generate thrust and not to increase lift beyond the basic value obtained by flapping only. Besides, our study gives comparable optimal efficiencies to those obtained from previous studies based on gradient-based optimization, but completely different design points (especially for the spline-based morphing), which would indicate that the design space associated with the flapping kinematics is very complex. [Copyright &y& Elsevier] AB - Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WING-warping (Aerodynamics) KW - MATHEMATICAL optimization KW - ORNITHOPTERS KW - PERFORMANCE evaluation KW - UNSTEADY flow (Aerodynamics) KW - VORTEX lattice method KW - KINEMATICS KW - Flapping wings KW - Global optimization KW - Unsteady vortex lattice method N1 - Accession Number: 78031465; Ghommem, Mehdi 1 Hajj, Muhammad R. 1; Email Address: mhajj@vt.edu Mook, Dean T. 1 Stanford, Bret K. 2 Beran, Philip S. 2 Snyder, Richard D. 2 Watson, Layne T. 3,4; Affiliation: 1: Department of Engineering Science and Mechanics, Virginia Polytechnic Institute and State University, 223A Norris Hall (MC 0219), Blacksburg, VA 24061, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7542, USA 3: Department of Computer Science, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA 4: Department of Mathematics, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; Source Info: Aug2012, Vol. 33, p210; Subject Term: WING-warping (Aerodynamics); Subject Term: MATHEMATICAL optimization; Subject Term: ORNITHOPTERS; Subject Term: PERFORMANCE evaluation; Subject Term: UNSTEADY flow (Aerodynamics); Subject Term: VORTEX lattice method; Subject Term: KINEMATICS; Author-Supplied Keyword: Flapping wings; Author-Supplied Keyword: Global optimization; Author-Supplied Keyword: Unsteady vortex lattice method; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.jfluidstructs.2012.04.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78031465&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kihm, Kenneth D. AU - Hussey, Daniel S. AU - Pratt, David M. AU - Swanson, Andrew D. T1 - Neutron Imaging of Progressive Mixing of H2O and D20 inside a Metal (Al) Container. JO - Journal of Heat Transfer JF - Journal of Heat Transfer Y1 - 2012/08// VL - 134 IS - 8 M3 - Article SP - 1 EP - 1 SN - 00221481 AB - The article focuses on the neutron imaging of H2O and D2O by the method of progressive mixing inside a metal container. KW - NEUTRONS KW - HEAVY metals KW - MIXING N1 - Accession Number: 79612970; Kihm, Kenneth D. 1 Hussey, Daniel S. 2 Pratt, David M. 3 Swanson, Andrew D. 3; Affiliation: 1: University of Tennessee, Knoxville, Tennessee, U. S. A. 2: National Institute of Standards and Technology, Gaithersburg, Maryland, U. S. A. 3: Air Force Research Laboratory, WPAFB, Ohio, U. S. A.; Source Info: Aug2012, Vol. 134 Issue 8, p1; Subject Term: NEUTRONS; Subject Term: HEAVY metals; Subject Term: MIXING; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79612970&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barney, I. T. AU - Ganguli, S. AU - Roy, A. K. AU - Mukhopadhyay, S. M. T1 - Improved Thermal Response in Encapsulated Phase Change Materials by Nanotube Attachment on Encapsulating Solid. JO - Journal of Nanotechnology in Engineering & Medicine JF - Journal of Nanotechnology in Engineering & Medicine Y1 - 2012/08// VL - 3 IS - 3 M3 - Article SP - 031005-1 EP - 031005-6 SN - 19492944 AB - This paper demonstrates greatly improved specific power (W/g) for encapsulated phase change materials (EPCM) as a result of modified interface morphology. Carbon nanotubes are strongly attached to the interior walls of the graphitic foam encapsulation. Microstructure analysis using scanning electron microscopy (SEM) indicates that the wax infiltrates into the carbon nanotubes (CNT) forest and creates an intimate contact with increased interfacial area between the two phases. Specific power has been calculated by measuring thermal response times of the phase change materials using a custom system. The carbon nanotubes increase the specific power of the encapsulated phase change materials by about 27% during heating and over 146% during the more important stage of latent heat storage. Moreover, SEM images of the interface after repeated thermal cycling indicate that the presence of CNT may also improve durability of the EPCM by preventing interfacial gaps and maintaining improved contact between the graphite and PCM phases. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nanotechnology in Engineering & Medicine is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHASE change materials KW - SCANNING electron microscopy KW - CARBON nanotubes KW - GRAPHITE KW - ELECTRONIC apparatus & appliances -- Plastic embedment KW - NANOTUBES KW - carbon foam KW - carbon nanotubes KW - latent heat storage KW - paraffin wax KW - phase change materials KW - specific power N1 - Accession Number: 86741856; Barney, I. T. 1 Ganguli, S. 2 Roy, A. K. 2 Mukhopadhyay, S. M. 1; Affiliation: 1: Center for Nanoscale Multifunctional Materials, Department of Mechanical and Materials Engineering, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH 45435 2: Thermal Sciences & Materials Branch, Air Force Research Laboratory, AFRL/RXBT Bldg 654, 2941 Hobson Way, WPAFB, OH 45433-7750; Source Info: Aug2012, Vol. 3 Issue 3, p031005-1; Subject Term: PHASE change materials; Subject Term: SCANNING electron microscopy; Subject Term: CARBON nanotubes; Subject Term: GRAPHITE; Subject Term: ELECTRONIC apparatus & appliances -- Plastic embedment; Subject Term: NANOTUBES; Author-Supplied Keyword: carbon foam; Author-Supplied Keyword: carbon nanotubes; Author-Supplied Keyword: latent heat storage; Author-Supplied Keyword: paraffin wax; Author-Supplied Keyword: phase change materials; Author-Supplied Keyword: specific power; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1115/1.4007327 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86741856&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Slipchenko, Mikhail N. AU - Moody, Clint E. AU - Miller, Joseph D. AU - Roy, Sukesh AU - Gord, James R. AU - Meyer, Terrence R. T1 - Micro-Optical Initiation of Nanoenergetic Materials Using a Temporally Tailored Variable-Pulse-Width Laser. JO - Journal of Nanotechnology in Engineering & Medicine JF - Journal of Nanotechnology in Engineering & Medicine Y1 - 2012/08// VL - 3 IS - 3 M3 - Article SP - 031007-1 EP - 031007-6 SN - 19492944 AB - Nanoenergetic materials can provide a significant enhancement in the rate of energy release as compared with microscale materials. The energy-release rate is strongly dependent not only on the primary particle size but also on the level of agglomeration, which is of particular interest for the inclusion of nanoenergetics in practical systems where agglomeration is desired or difficult to avoid. Unlike studies of nanoparticles or nanometer-size aggregates, which can be conducted with ultrafast or nanosecond lasers assuming uniform heating, microscale aggregates of nanoparticles are more sensitive to the thermophysical time scale of the heating process. To allow control over the rate of energy deposition during laser initiation studies, a custom, temporally tailored, continuously variable-pulse-width (VPW) laser was employed for radiative heating of nanoenergetic materials. The laser consisted of a continuous-wave master oscillator, which could be sliced into desired pulses, and a chain of amplifiers to reach high peak power. The slicer allowed control over the time profile of the pulses via the combination of an arbitrary waveform generator and acousto-optic modulator (AOM). The effects of utilizing flat-top or ramped laser pulses with durations from 100 ns to 150 µs and energies up to 20 mJ at 1064 nm were investigated, along with a broad range of heating rates for single particles or nanoparticle aggregates up to 100-µm diameter. In combination with an optical microscope, laser heating of aggregates consisting of 70-nm diameter Al nano- particles in a Teflon matrix showed significant dependence on the heating profile due to the sensitivity of nanoenergetic materials to heating rate. The ability to control the temporal pulse-intensity, profile leads to greater control over the effects of ablative heating and the resulting shockwave propagation. Hence, flexible laser-pulse profiles allow the investigation of energetic properties for a wide size range of metal/metal-oxide nanoparticles, aggregates, and composites. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nanotechnology in Engineering & Medicine is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - AGGLOMERATION (Materials) KW - NANOSTRUCTURED materials KW - LASERS KW - METALLIC oxides KW - laser initiation KW - nanoenergetic materials KW - variable-pulse-width laser N1 - Accession Number: 86741858; Slipchenko, Mikhail N. 1 Moody, Clint E. 2 Miller, Joseph D. 2 Roy, Sukesh 3 Gord, James R. 4 Meyer, Terrence R. 2; Email Address: trm@iastate.edu; Affiliation: 1: Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907; Spectral Energies, LLC, Dayton, OH 45431 2: Department of Mechanical Engineering, Iowa State University, Ames, IA 50011 3: Spectral Energies, LLC, Dayton, OH 45431 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433; Source Info: Aug2012, Vol. 3 Issue 3, p031007-1; Subject Term: NANOPARTICLES; Subject Term: AGGLOMERATION (Materials); Subject Term: NANOSTRUCTURED materials; Subject Term: LASERS; Subject Term: METALLIC oxides; Author-Supplied Keyword: laser initiation; Author-Supplied Keyword: nanoenergetic materials; Author-Supplied Keyword: variable-pulse-width laser; NAICS/Industry Codes: 212210 Iron Ore Mining; Number of Pages: 6p; Document Type: Article L3 - 10.1115/1.4007887 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86741858&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, H. Sam AU - Varshney, Vikas AU - Wohlwend, Jennifer L. AU - Roy, Ajit K. T1 - Heat Transfer at Aluminum-Water Interfaces: Effect of Surface Roughness. JO - Journal of Nanotechnology in Engineering & Medicine JF - Journal of Nanotechnology in Engineering & Medicine Y1 - 2012/08// VL - 3 IS - 3 M3 - Article SP - 031008-1 EP - 031008-6 SN - 19492944 AB - In this paper, we studied the effect of microscopic surface roughness on heat transfer between aluminum and water by molecular dynamic (MD) simulations and macroscopic surface roughness on heat transfer between aluminum and water by finite element (FE) method. It was observed that as the microscopic scale surface roughness increases, the thermal boundary conductance increases. At the macroscopic scale, different degrees of surface roughness were studied by finite element method. The heat transfer was observed to enhance as the surface roughness increases. Based on the studies of thermal boundary conductance as a function of system size at the molecular level, a procedure was proposed to obtain the thermal boundary conductance at the mesoscopic scale. The thermal boundary resistance at the microscopic scale obtained by MD simulations and the thermal boundary resistance at the mesoscopic scale obtained by the extrapolation procedure can be included and implemented at the interfacial elements in the finite element method at the macroscopic scale. This provides us a useful model, in which different scales of surface roughness can be included, for heat transfer analysis. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nanotechnology in Engineering & Medicine is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT transfer KW - ALUMINUM KW - MOLECULAR dynamics KW - FINITE element method KW - INTERFACIAL resistance KW - SURFACE roughness N1 - Accession Number: 86741859; Huang, H. Sam; Email Address: hsengji.huang.ctr@wpafb.af.mil Varshney, Vikas Wohlwend, Jennifer L. Roy, Ajit K. 1; Affiliation: 1: Thermal Sciences and Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, OH 45433; Source Info: Aug2012, Vol. 3 Issue 3, p031008-1; Subject Term: HEAT transfer; Subject Term: ALUMINUM; Subject Term: MOLECULAR dynamics; Subject Term: FINITE element method; Subject Term: INTERFACIAL resistance; Subject Term: SURFACE roughness; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; Number of Pages: 6p; Document Type: Article L3 - 10.1115/1.4007584 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86741859&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ketov, S.V. AU - Louzguina-Luzgina, L.V. AU - Churyumov, A.Yu. AU - Solonin, A.N. AU - Miracle, D.B. AU - Louzguine-Luzgin, D.V. AU - Inoue, A. T1 - Glass-formation and crystallization processes in Ag–Y–Cu alloys JO - Journal of Non-Crystalline Solids JF - Journal of Non-Crystalline Solids Y1 - 2012/08// VL - 358 IS - 15 M3 - Article SP - 1759 EP - 1763 SN - 00223093 AB - Abstract: Investigation of glass-formation and crystallization processes of several alloys of Ag–Y–Cu system was conducted. The samples were produced by melt spinning and Cu-mold casting. The structure of ribbon samples was examined by X-ray diffractometry and transmission electron microscopy. Phase transformations were studied by differential scanning and isothermal calorimetry and differential thermal analysis. Despite the large difference in atomic radii between the components in the investigated system, even being produced by melt spinning technique at high cooling rate, only Ag61Y29Cu10 alloy with large supercooled liquid region was found to be X-ray amorphous. A principle for obtaining an alloy with high glass forming ability involving difference in atomic radii between the alloy components is considered. Efficient cluster packing model was also tested. [Copyright &y& Elsevier] AB - Copyright of Journal of Non-Crystalline Solids is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC glasses KW - CRYSTALLIZATION KW - SILVER alloys KW - CHEMICAL systems KW - MELT spinning KW - CHEMICAL structure KW - TRANSMISSION electron microscopy KW - Ag–Y–Cu alloys KW - Amorphous structure KW - Glass crystallization KW - Glass-formation N1 - Accession Number: 77332635; Ketov, S.V. 1; Email Address: ketov.sergey@wpi-aimr.tohoku.ac.jp Louzguina-Luzgina, L.V. 1 Churyumov, A.Yu. 2 Solonin, A.N. 2 Miracle, D.B. 3 Louzguine-Luzgin, D.V. 1 Inoue, A. 1; Affiliation: 1: WPI Advanced Institute for Materials Research, Tohoku University, Aoba-Ku, Sendai 980-8577, Japan 2: National University of Science and Technology “MISIS” (MISIS), Leninskii pr. 4, Moscow, 119049 Russia 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, 2230 Tenth Street, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Aug2012, Vol. 358 Issue 15, p1759; Subject Term: METALLIC glasses; Subject Term: CRYSTALLIZATION; Subject Term: SILVER alloys; Subject Term: CHEMICAL systems; Subject Term: MELT spinning; Subject Term: CHEMICAL structure; Subject Term: TRANSMISSION electron microscopy; Author-Supplied Keyword: Ag–Y–Cu alloys; Author-Supplied Keyword: Amorphous structure; Author-Supplied Keyword: Glass crystallization; Author-Supplied Keyword: Glass-formation; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jnoncrysol.2012.05.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77332635&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tseng, Charles C. AU - Swanson, Andrew D. AU - Viskanta, Raymond AU - Sikorski, Ruth L. AU - Chen, Ming Y. T1 - Effect of foam properties on radiative properties of open-cell silicon carbide foams JO - Journal of Quantitative Spectroscopy & Radiative Transfer JF - Journal of Quantitative Spectroscopy & Radiative Transfer Y1 - 2012/08// VL - 113 IS - 12 M3 - Article SP - 1503 EP - 1507 SN - 00224073 AB - Abstract: Low density and small-cell size foams can be used in thermal protection and/or thermal insulation systems. At high temperature () thermal radiation may be important or dominate heat transfer in the foam; however, studies based on more detailed thermal radiation analysis are limited due to the lack of detailed information on radiative properties of foams. Of particular interest of this study is to understand how the properties of foam material such as its density and mean cell size affect the radiative properties of silicon carbide (SiC) foams. In this paper, the dimensionless strut diameter is considered as an important parameter of foams, and the radiative properties of foams are analyzed using the Mie scattering theory. Also, the spectral extinction coefficients of SiC foams are measured experimentally in the laboratory at room temperature. The mean radiative properties are calculated at 1000K and compared with theoretical calculations, and the data are found to agree well with the predictions. The attenuation/extinction behavior of SiC foams can be characterized by the approach presented in this study. The results should be useful for applications of foams at high temperature. [Copyright &y& Elsevier] AB - Copyright of Journal of Quantitative Spectroscopy & Radiative Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON carbide KW - FOAMED materials KW - HEAT -- Radiation & absorption KW - THERMAL insulation KW - HIGH temperatures KW - HEAT transfer KW - Asymmetric factor KW - Extinction coefficient KW - Open-cell foam KW - Radiative properties KW - Scattering albedo KW - Thermal protection N1 - Accession Number: 75171152; Tseng, Charles C. 1 Swanson, Andrew D. 1 Viskanta, Raymond 2 Sikorski, Ruth L. 3 Chen, Ming Y. 4; Email Address: Ming-Yung.Chen@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, AFRL/RBSA, Air Vehicles Directorate, Wright-Patterson AFB, OH 45433, USA 2: School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA 3: Air Force Research Laboratory, AFRL/RZTS, Propulsion Directorate, Wright-Patterson AFB, OH 45433, USA 4: Air Force Research Laboratory, AFRL/RXBC, Material & Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Aug2012, Vol. 113 Issue 12, p1503; Subject Term: SILICON carbide; Subject Term: FOAMED materials; Subject Term: HEAT -- Radiation & absorption; Subject Term: THERMAL insulation; Subject Term: HIGH temperatures; Subject Term: HEAT transfer; Author-Supplied Keyword: Asymmetric factor; Author-Supplied Keyword: Extinction coefficient; Author-Supplied Keyword: Open-cell foam; Author-Supplied Keyword: Radiative properties; Author-Supplied Keyword: Scattering albedo; Author-Supplied Keyword: Thermal protection; NAICS/Industry Codes: 326150 Urethane and Other Foam Product (except Polystyrene) Manufacturing; NAICS/Industry Codes: 238310 Drywall and Insulation Contractors; NAICS/Industry Codes: 423330 Roofing, Siding, and Insulation Material Merchant Wholesalers; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jqsrt.2012.03.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75171152&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Marinone, Timothy AU - Avitabile, Peter AU - Foley, Jason AU - Wolfson, Janet T1 - Efficient computational nonlinear dynamic analysis using modal modification response technique JO - Mechanical Systems & Signal Processing JF - Mechanical Systems & Signal Processing Y1 - 2012/08// VL - 31 M3 - Article SP - 67 EP - 93 SN - 08883270 AB - Abstract: Generally, structural systems contain nonlinear characteristics in many cases. These nonlinear systems require significant computational resources for solution of the equations of motion. Much of the model, however, is linear where the nonlinearity results from discrete local elements connecting different components together. Using a component mode synthesis approach, a nonlinear model can be developed by interconnecting these linear components with highly nonlinear connection elements. The approach presented in this paper, the Modal Modification Response Technique (MMRT), is a very efficient technique that has been created to address this specific class of nonlinear problem. By utilizing a Structural Dynamics Modification (SDM) approach in conjunction with mode superposition, a significantly smaller set of matrices are required for use in the direct integration of the equations of motion. The approach will be compared to traditional analytical approaches to make evident the usefulness of the technique for a variety of test cases. [Copyright &y& Elsevier] AB - Copyright of Mechanical Systems & Signal Processing is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR models (Statistics) KW - MATHEMATICAL models KW - STRUCTURAL dynamics KW - STRAINS & stresses (Mechanics) KW - MATRICES KW - EQUATIONS of motion KW - STRUCTURAL analysis (Engineering) KW - NUMERICAL analysis KW - Forced nonlinear response KW - Linear components for nonlinear analysis KW - Modal analysis KW - Mode superposition KW - Nonlinear analysis N1 - Accession Number: 76333397; Marinone, Timothy 1; Email Address: timothy.marinone@gmail.com Avitabile, Peter 1 Foley, Jason 2 Wolfson, Janet 2; Affiliation: 1: Structural Dynamics and Acoustic Systems Laboratory, University of Massachusetts Lowell, One University Avenue, Lowell, MA 01854, USA 2: Air Force Research Laboratory Munitions Directorate Fuzes Branch, Eglin Air Force Base, 306W. Eglin Blvd., Bldg 432, Eglin AFB, FL 32542-5430, USA; Source Info: Aug2012, Vol. 31, p67; Subject Term: NONLINEAR models (Statistics); Subject Term: MATHEMATICAL models; Subject Term: STRUCTURAL dynamics; Subject Term: STRAINS & stresses (Mechanics); Subject Term: MATRICES; Subject Term: EQUATIONS of motion; Subject Term: STRUCTURAL analysis (Engineering); Subject Term: NUMERICAL analysis; Author-Supplied Keyword: Forced nonlinear response; Author-Supplied Keyword: Linear components for nonlinear analysis; Author-Supplied Keyword: Modal analysis; Author-Supplied Keyword: Mode superposition; Author-Supplied Keyword: Nonlinear analysis; Number of Pages: 27p; Document Type: Article L3 - 10.1016/j.ymssp.2012.02.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76333397&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fontanari, José F. AU - Bonniot-Cabanac, Marie-Claude AU - Cabanac, Michel AU - Perlovsky, Leonid I. T1 - A structural model of emotions of cognitive dissonances JO - Neural Networks JF - Neural Networks Y1 - 2012/08// VL - 32 M3 - Article SP - 57 EP - 64 SN - 08936080 AB - Abstract: Cognitive dissonance is the stress that comes from holding two conflicting thoughts simultaneously in the mind, usually arising when people are asked to choose between two detrimental or two beneficial options. In view of the well-established role of emotions in decision making, here we investigate whether the conventional structural models used to represent the relationships among basic emotions, such as the Circumplex model of affect, can describe the emotions of cognitive dissonance as well. We presented a questionnaire to 34 anonymous participants, where each question described a decision to be made among two conflicting motivations and asked the participants to rate analogically the pleasantness and the intensity of the experienced emotion. We found that the results were compatible with the predictions of the Circumplex model for basic emotions. [Copyright &y& Elsevier] AB - Copyright of Neural Networks is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMOTIONS (Psychology) KW - COGNITIVE dissonance KW - STRESS (Psychology) KW - MATHEMATICAL models KW - DECISION making KW - QUESTIONNAIRES KW - MOTIVATION (Psychology) KW - PLEASANTNESS & unpleasantness (Psychology) KW - Circumplex model KW - Cognitive dissonance KW - Free-choice paradigm KW - Measure of emotions KW - Pleasure N1 - Accession Number: 76335126; Fontanari, José F. 1; Email Address: fontanari@ifsc.usp.br Bonniot-Cabanac, Marie-Claude 2; Email Address: Marie-Claude.Bonniot@fmed.ulaval.ca Cabanac, Michel 2; Email Address: michel.cabanac@fmed.ulaval.ca Perlovsky, Leonid I. 3,4; Email Address: Leonid.Perlovsky@wpafb.af.mil; Affiliation: 1: Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos SP, Brazil 2: Department of Psychiatry & Neurosciences, Faculty of Medicine, Laval University, Quebec, Canada 3: Harvard University, 33 Oxford St, Rm 336, Cambridge MA 02138, United States 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, United States; Source Info: Aug2012, Vol. 32, p57; Subject Term: EMOTIONS (Psychology); Subject Term: COGNITIVE dissonance; Subject Term: STRESS (Psychology); Subject Term: MATHEMATICAL models; Subject Term: DECISION making; Subject Term: QUESTIONNAIRES; Subject Term: MOTIVATION (Psychology); Subject Term: PLEASANTNESS & unpleasantness (Psychology); Author-Supplied Keyword: Circumplex model; Author-Supplied Keyword: Cognitive dissonance; Author-Supplied Keyword: Free-choice paradigm; Author-Supplied Keyword: Measure of emotions; Author-Supplied Keyword: Pleasure; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.neunet.2012.04.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76335126&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Panasyuk, George Y. AU - Levin, George A. AU - Yerkes, Kirk L. T1 - Heat exchange mediated by a quantum system. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2012/08// VL - 86 IS - 2-1 M3 - Article SP - 1 EP - 15 SN - 15393755 AB - We consider heat transfer between two thermal reservoirs mediated by a quantum system using the generalized quantum Langevin equation. The thermal reservoirs are treated as ensembles of oscillators within the framework of the Drude-Ullersma model. General expressions for the heat current and thermal conductance are obtained for arbitrary coupling strength between the reservoirs and the mediator and for different temperature regimes. As an application of these results we discuss the origin of Fourier's law in a chain of large but finite subsystems coupled to each other by the quantum mediators. We also address a question of anomalously large heat current between the scanning tunneling microscope (STM) tip and substrate found in a recent experiment. The question of minimum thermal conductivity is revisited in the framework of scaling theory as a potential application of the developed approach. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT transfer KW - LANGEVIN equations KW - QUANTUM theory KW - MATHEMATICAL models KW - THERMAL conductivity KW - TEMPERATURE effect KW - SCANNING tunneling microscopy KW - SCALING laws (Statistical physics) N1 - Accession Number: 82053714; Panasyuk, George Y. 1; Email Address: George.Panasyuk.ctr@wpafb.af.mil Levin, George A. 1 Yerkes, Kirk L. 1; Affiliation: 1: Aerospace Systems Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: Aug2012, Vol. 86 Issue 2-1, p1; Subject Term: HEAT transfer; Subject Term: LANGEVIN equations; Subject Term: QUANTUM theory; Subject Term: MATHEMATICAL models; Subject Term: THERMAL conductivity; Subject Term: TEMPERATURE effect; Subject Term: SCANNING tunneling microscopy; Subject Term: SCALING laws (Statistical physics); Number of Pages: 15p; Document Type: Article L3 - 10.1103/PhysRevE.86.021116 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82053714&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Song, Xueyan AU - Chen, Yun AU - Chen, Song AU - Barbero, Ever AU - Thomas, Evan L. AU - Barnes, Paul T1 - Significant enhancement of electrical transport properties of thermoelectric Ca3Co4O9+δ through Yb doping JO - Solid State Communications JF - Solid State Communications Y1 - 2012/08// VL - 152 IS - 16 M3 - Article SP - 1509 EP - 1512 SN - 00381098 AB - Abstract: We report the significant enhancement of the power factor of Ca3Co4O9+δ through Yb doping. The pellets were prepared by pressing under 0.5GPa and 2GPa. The highest power factor of 553μWm−1 K−2 due to the significant increase of electrical conductivity was obtained for Ca2.9Yb0.1Co4O9+δ pressed at 0.5GPa. This is 2.3 times higher than that of Ca3Co4O9+δ (246μWm−1 K−2). Nanostructure examinations show that the pellets pressed at 0.5 and 2GPa have different nano-lamella structures. This work suggests that Yb is an effective doping element for enhancing the electrical transport properties of Ca3Co4O9+δ , and the optimum doping level is related to the nanostructure of the bulk pellets. [Copyright &y& Elsevier] AB - Copyright of Solid State Communications is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOELECTRICITY KW - TRANSPORT theory (Mathematics) KW - CALCIUM compounds KW - COBALT oxides KW - YTTERBIUM KW - ELECTRIC power factor KW - ELECTRIC conductivity KW - Cobalt oxide KW - Substitution KW - Thermoelectric materials KW - Transmission electron microscopy N1 - Accession Number: 77732698; Song, Xueyan 1; Email Address: xueyan.song@mail.wvu.edu Chen, Yun 1 Chen, Song 1 Barbero, Ever 1 Thomas, Evan L. 2 Barnes, Paul 3; Affiliation: 1: Dept Mechanical and Aerospace Engineering, West Virginia University, Evansdale Drive, Morgantown, WV 26506, USA 2: University of Dayton Research Institute/Air Force Research Laboratory-WPAFB, Energy Technologies and Materials Division, 300 College Park, Dayton, OH 45469, USA 3: Army Research Laboratory, 2800 Powder Mill Rd., Adelphi, MD 20783, USA; Source Info: Aug2012, Vol. 152 Issue 16, p1509; Subject Term: THERMOELECTRICITY; Subject Term: TRANSPORT theory (Mathematics); Subject Term: CALCIUM compounds; Subject Term: COBALT oxides; Subject Term: YTTERBIUM; Subject Term: ELECTRIC power factor; Subject Term: ELECTRIC conductivity; Author-Supplied Keyword: Cobalt oxide; Author-Supplied Keyword: Substitution; Author-Supplied Keyword: Thermoelectric materials; Author-Supplied Keyword: Transmission electron microscopy; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.ssc.2012.06.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77732698&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carpenter, J. S. AU - Misra, A. AU - Uchic, M. D. AU - Anderson, P. M. T1 - Strain rate sensitivity and activation volume of Cu/Ni metallic multilayer thin films measured via micropillar compression. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/07/30/ VL - 101 IS - 5 M3 - Article SP - 051901 PB - American Institute of Physics SN - 00036951 AB - Micropillar compression testing with repeated jumps in strain rate is used to circumvent inherent difficulties associated with nanoindentation and tensile testing of free-standing films. Application to sputtered 21 nm/21 nm Cu/Ni multilayer thin films with a cube-on-cube texture reveals an average strain rate sensitivity (m = 0.014) and activation volume (V = 17 b3), comparable to nanocrystalline face-centered cubic metals. Yet, m increases by ∼50% and V decreases by 70% with increasing strain, opposite to trends reported for nanotwinned Cu. The large, strain-dependent shifts in m and V are dependent on the underlying misfit dislocation structure of Cu/Ni interfaces. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAIN rate (Materials science) KW - THIN films KW - TENSILE strength KW - SENSITIVITY analysis KW - INTERFACES (Physical sciences) KW - METALS -- Mechanical properties KW - SUBSTRATES (Materials science) N1 - Accession Number: 78299184; Carpenter, J. S. 1,2,3 Misra, A. 2 Uchic, M. D. 4 Anderson, P. M. 3; Affiliation: 1: MST-6: Metallurgy, Los Alamos National Laboratory, Los Alamos, New Mexico 87544, 2: MPA-CINT: Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87544, 3: Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210, 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433,; Source Info: 7/30/2012, Vol. 101 Issue 5, p051901; Subject Term: STRAIN rate (Materials science); Subject Term: THIN films; Subject Term: TENSILE strength; Subject Term: SENSITIVITY analysis; Subject Term: INTERFACES (Physical sciences); Subject Term: METALS -- Mechanical properties; Subject Term: SUBSTRATES (Materials science); Number of Pages: 4p; Illustrations: 1 Black and White Photograph, 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.4739521 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78299184&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Peloquin, Andrew J. AU - Stone, Rebecca L. AU - Avila, Sarah E. AU - Rudico, Erlyn R. AU - Horn, Christopher B. AU - Gardner, Kim A. AU - Ball, David W. AU - Johnson, Jane E. B. AU - Iacono, Scott T. AU - Balaich, Gary J. T1 - Synthesis of 1,3-Diphenyl-6-alkyl/aryl-Substituted Fulvene Chromophores: Observation of π-π Interactions in a 6-Pyrene-Substituted 1,3-Diphenylfulvene. JO - Journal of Organic Chemistry JF - Journal of Organic Chemistry Y1 - 2012/07/20/ VL - 77 IS - 14 M3 - Article SP - 6371 EP - 6376 SN - 00223263 AB - The synthesis, structural, and electronic properties of nine 1,3-diphenyl-6-alkyl/aryl substituted pentafulvenes were studied. Pyrene ring π-π interactions were revealed from analysis of the experimental crystal packing of 1,3-diphenyl-6-(1-pyrene)fulvene and supporting DFT calculations. Photophysical properties derived from UV-vis and fluorescence emission measurements demonstrated tunable and low HOMO-LUMO band gaps for the series. The presented results point to a model synthetic approach for incorporation of extended π systems and donor-π-acceptor groups for fulvene-based electronic materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Organic Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PYRENE (Chemical) KW - DISCRETE Fourier transforms KW - FLUORESCENCE KW - ENERGY gaps (Physics) KW - ELECTRONIC materials N1 - Accession Number: 78350303; Peloquin, Andrew J. 1 Stone, Rebecca L. 1 Avila, Sarah E. 1 Rudico, Erlyn R. 1 Horn, Christopher B. 1 Gardner, Kim A. 1 Ball, David W. 2 Johnson, Jane E. B. 1 Iacono, Scott T. 1 Balaich, Gary J. 1; Email Address: gary.balaich@usafa.edu; Affiliation: 1: Department of Chemistry, United States Air Force Academy, USAF Academy, Colorado 80840, United States 2: Department of Chemistry, Cleveland State University, Cleveland, Ohio 44115, United States; Source Info: 7/20/2012, Vol. 77 Issue 14, p6371; Subject Term: PYRENE (Chemical); Subject Term: DISCRETE Fourier transforms; Subject Term: FLUORESCENCE; Subject Term: ENERGY gaps (Physics); Subject Term: ELECTRONIC materials; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78350303&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ramezani, Hamidreza AU - Christodoulides, D. N. AU - Kovanis, V. AU - Vitebskiy, I. AU - Kottos, Tsampikos T1 - PT-Symmetric Talbot Effects. JO - Physical Review Letters JF - Physical Review Letters Y1 - 2012/07/20/ VL - 109 IS - 3 M3 - Article SP - 1 EP - 5 SN - 00319007 AB - We show that complex PT -symmetric photonic lattices can lead to a new class of self-imaging Talbot effects. For this to occur, we find that the input field pattern has to respect specific periodicities dictated by the symmetries of the system. While at the spontaneous PT-symmetry breaking point the image revivals occur at Talbot lengths governed by the characteristics of the passive lattice, at the exact phase it depends on the gain and loss parameter, thus allowing one to control the imaging process. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review Letters is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYMMETRY (Physics) KW - TALBOT'S law (Optics) KW - PHOTONICS KW - IMAGE processing KW - PARAMETER estimation KW - FIELD theory (Physics) N1 - Accession Number: 78561612; Ramezani, Hamidreza 1 Christodoulides, D. N. 2 Kovanis, V. 3 Vitebskiy, I. 3 Kottos, Tsampikos 1,4; Affiliation: 1: Department of Physics, Wesleyan University, Middletown, Connecticut 06459, USA 2: College of Optics and Photonics-CREOL, University of Central Florida, Orlando, Florida 32816, USA 3: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 4: MPI for Dynamics and Self-Organization, Bunsenstrasse 10, D-37073 Göttingen, Germany; Source Info: 7/20/2012, Vol. 109 Issue 3, p1; Subject Term: SYMMETRY (Physics); Subject Term: TALBOT'S law (Optics); Subject Term: PHOTONICS; Subject Term: IMAGE processing; Subject Term: PARAMETER estimation; Subject Term: FIELD theory (Physics); NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 812922 One-Hour Photofinishing; Number of Pages: 5p; Document Type: Article L3 - 10.1103/PhysRevLett.109.033902 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78561612&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Trohalaki, Steven AU - Kedziora, Gary S. AU - Pachter, Ruth T1 - Molecular dynamics simulation of two photon-absorbing polyimides: Evidence for the formation of intra- and inter-chain dimers JO - Polymer JF - Polymer Y1 - 2012/07/19/ VL - 53 IS - 16 M3 - Article SP - 3421 EP - 3425 SN - 00323861 AB - Abstract: The two photon-absorbing (2PA) chromophore diphenylamino-diethylfluorene-benzothiazole was recently incorporated into a new series of polyimides that form clear, heat-resistant films. Although the chromophore is fluorescent, the polyimides are not fluorescent when in solution or in the solid state. While the two-photon response remains undiminished for both nanosecond and femtosecond timescales in solution, nearly an order of magnitude increase in nanosecond two-photon response was observed in the solid state. In order to better understand 2PA in excited-state dimers of this class of polyimide, we explored dimerization in the ground-state, either within the polymer chain or inter-molecularly among chains. We built models of polyimides at experimental density and performed classical molecular dynamics simulations. Analyses using spatial orientation correlation functions suggest that ground state dimers composed of π-stacked chromophore pairs or chromophore-phthalimide moieties form within chains and between chains. Dimer conformations obtained from the molecular dynamics trajectories are also consistent with our analyses. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR dynamics KW - PHOTONS KW - POLYIMIDES KW - DIMERS KW - CHROMOPHORES KW - BENZOTHIAZOLE KW - HEAT resistant materials KW - TRAJECTORIES (Mechanics) KW - Molecular dynamics simulation KW - Polymimides KW - Two-photon absorption N1 - Accession Number: 77732648; Trohalaki, Steven 1,2; Email Address: Steven.Trohalaki@wpafb.af.mil Kedziora, Gary S. 3 Pachter, Ruth 1; Email Address: Ruth.Pachter@wpafb.af.mil; Affiliation: 1: Materials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 2: General Dynamics Information Technology, 5100 Springfield Pike, Suite 509, Dayton, OH 45431, USA 3: Dynamics Research Corp., Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Jul2012, Vol. 53 Issue 16, p3421; Subject Term: MOLECULAR dynamics; Subject Term: PHOTONS; Subject Term: POLYIMIDES; Subject Term: DIMERS; Subject Term: CHROMOPHORES; Subject Term: BENZOTHIAZOLE; Subject Term: HEAT resistant materials; Subject Term: TRAJECTORIES (Mechanics); Author-Supplied Keyword: Molecular dynamics simulation; Author-Supplied Keyword: Polymimides; Author-Supplied Keyword: Two-photon absorption; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.polymer.2012.05.061 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77732648&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sciamanna, M. AU - Virte, M. AU - Masoller, C. AU - Gavrielides, A. T1 - Hopf bifurcation to square-wave switching in mutually coupled semiconductor lasers. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2012/07/15/ VL - 86 IS - 1-2 M3 - Article SP - 162181 EP - 162187 SN - 15393755 AB - Using advanced continuation techniques for dynamical systems, we elucidate the bifurcations leading to asymptotically stable square-wave pulsing and polarization mode switching in semiconductor lasers with mutual time-delayed and polarization rotating coupling. We find that the increase of coupling strength leads to a cascade of Hopf bifurcations on a mixed-mode steady state up to a transcritical bifurcation on a so-called pure-mode steady state where both lasers emit with the injected polarization state. From these successive Hopf bifurcations emerge time-periodic solutions that have a period close to the laser relaxation oscillation for weak coupling but a period close to twice the time delay for large coupling strength. The wave form of the time-periodic solutions also evolves from harmonic pulsing up to square-wave pulsing as has been observed recently in experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HOPF bifurcations KW - BIFURCATION theory KW - MATHEMATICAL models KW - SEMICONDUCTOR lasers KW - SQUARE waves KW - SWITCHING circuits KW - POLARIZATION (Electricity) N1 - Accession Number: 79270265; Sciamanna, M. 1; Email Address: marc.sciamanna@supelec.fr Virte, M. 1 Masoller, C. 2 Gavrielides, A. 3; Affiliation: 1: Supélec, OPTEL Research Group, Laboratoire Matériaux Optiques, Photonique et Systèmes, EA-4423, 2 rue Edouard Belin, F-57070 Metz, France 2: Departament de Fisica i Enginyeria Nuclear, Universitat Politecnica de Catalunya, Colom 11, E-08222 Terrassa, Barcelona, Spain 3: Air Force Research Laboratory, AFR/EOARD, 86 Blenheim Crescent, Ruislip, Middlesex HA4 7HB, United Kingdom; Source Info: Jul2012, Vol. 86 Issue 1-2, p162181; Subject Term: HOPF bifurcations; Subject Term: BIFURCATION theory; Subject Term: MATHEMATICAL models; Subject Term: SEMICONDUCTOR lasers; Subject Term: SQUARE waves; Subject Term: SWITCHING circuits; Subject Term: POLARIZATION (Electricity); NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 335313 Switchgear and Switchboard Apparatus Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1103/PhysRevE.86.016218 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79270265&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Troe, Jürgen AU - Miller, Thomas M. AU - Shuman, Nicholas S. AU - Viggiano, Albert A. T1 - Analysis by kinetic modeling of the temperature dependence of thermal electron attachment to CF3Br. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2012/07/14/ VL - 137 IS - 2 M3 - Article SP - 024303 EP - 024303-6 PB - American Institute of Physics SN - 00219606 AB - Experimental data from the literature for cross sections and rate constants for dissociative electron attachment to CF3Br, with separately varied electron and gas temperatures, are analyzed by a kinetic modeling approach. The analysis suggests that electronic and nuclear contributions to the rate constants can be roughly separated, the former leading to a negative temperature coefficient, the latter to a positive temperature coefficient. The nuclear factor in the rate constant is found to be of Arrhenius form with an activation energy which is close to the energy of crossing of the CF3Br and CF3Br- potential curves along the CBr bond. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL kinetics KW - MATHEMATICAL models KW - TEMPERATURE effect KW - THERMAL electrons KW - BROMOTRIFLUOROMETHANE KW - DISSOCIATION (Chemistry) KW - CROSS sections (Nuclear physics) KW - ELECTRONIC structure KW - ACTIVATION energy KW - MOLECULAR orbitals N1 - Accession Number: 77732939; Troe, Jürgen 1,2,3 Miller, Thomas M. 4 Shuman, Nicholas S. 4 Viggiano, Albert A. 4; Affiliation: 1: Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, 2: Max-Planck-Institut für Biophysikalische Chemie, Am Fassberg 11, D-37077 Göttingen, 3: Laser-Laboratorium Göttingen, Hans-Adolf-Krebs-Weg 1, D-37077 Göttingen, 4: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117-5776,; Source Info: 7/14/2012, Vol. 137 Issue 2, p024303; Subject Term: CHEMICAL kinetics; Subject Term: MATHEMATICAL models; Subject Term: TEMPERATURE effect; Subject Term: THERMAL electrons; Subject Term: BROMOTRIFLUOROMETHANE; Subject Term: DISSOCIATION (Chemistry); Subject Term: CROSS sections (Nuclear physics); Subject Term: ELECTRONIC structure; Subject Term: ACTIVATION energy; Subject Term: MOLECULAR orbitals; Number of Pages: 1p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1063/1.4729369 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77732939&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beier, Hope T. AU - Roth, Caleb C. AU - Tolstykh, Gleb P. AU - Ibey, Bennett L. T1 - Resolving the spatial kinetics of electric pulse-induced ion release JO - Biochemical & Biophysical Research Communications JF - Biochemical & Biophysical Research Communications Y1 - 2012/07/13/ VL - 423 IS - 4 M3 - Article SP - 863 EP - 866 SN - 0006291X AB - Abstract: Exposure of cells to nanosecond pulsed electric fields (nsPEF) causes a rapid increase in intracellular calcium. The mechanism(s) responsible for this calcium burst remains unknown, but is hypothesized to be from direct influx through nanopores, the activation of specific ion channels, or direct disruption of organelles. It is likely, however, that several mechanisms are involved/activated, thereby resulting in a complex chain of events that are difficult to separate by slow imaging methods. In this letter, we describe a novel high-speed imaging system capable of determining the spatial location of calcium bursts within a single cell following nsPEF exposure. Preliminary data in rodent neuroblastoma cells are presented, demonstrating the ability of this system to track the location of calcium bursts in vitro within milliseconds of exposure. These data reveal that calcium ions enter the cell from the plasma membrane regions closest to the electrodes (poles), and that intracellular calcium release occurs in the absence of extracellular calcium. We believe that this novel technique will allow us to temporally and spatially separate various nsPEF-induced effects, leading to powerful insights into the mechanism(s) of interaction between electric fields and cellular membranes. [Copyright &y& Elsevier] AB - Copyright of Biochemical & Biophysical Research Communications is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FEMTOSECOND pulses KW - ELECTRIC fields KW - INTRACELLULAR calcium KW - CHEMICAL kinetics KW - NANOPORES KW - CELL organelles KW - IMAGING systems KW - CELL membranes KW - Calcium KW - Fluorescence imaging KW - Nanopores KW - Nanosecond electric pulse KW - Pulsed electric field N1 - Accession Number: 77740620; Beier, Hope T. 1; Email Address: hopebeier@gmail.com Roth, Caleb C. 2 Tolstykh, Gleb P. 1 Ibey, Bennett L. 1; Affiliation: 1: Air Force Research Laboratory, 4141 Petroleum Road, Fort Sam Houston, TX 78234, USA 2: General Dynamics Information Technology, 4141 Petroleum Road, Fort Sam Houston, TX, USA; Source Info: Jul2012, Vol. 423 Issue 4, p863; Subject Term: FEMTOSECOND pulses; Subject Term: ELECTRIC fields; Subject Term: INTRACELLULAR calcium; Subject Term: CHEMICAL kinetics; Subject Term: NANOPORES; Subject Term: CELL organelles; Subject Term: IMAGING systems; Subject Term: CELL membranes; Author-Supplied Keyword: Calcium; Author-Supplied Keyword: Fluorescence imaging; Author-Supplied Keyword: Nanopores; Author-Supplied Keyword: Nanosecond electric pulse; Author-Supplied Keyword: Pulsed electric field; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.bbrc.2012.06.055 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77740620&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kanmae, T. AU - Stenbaek-Nielsen, H. C. AU - McHarg, M. G. AU - Haaland, R. K. T1 - Diameter-speed relation of sprite streamers. JO - Journal of Physics: D Applied Physics JF - Journal of Physics: D Applied Physics Y1 - 2012/07/11/ VL - 45 IS - 27 M3 - Article SP - 1 EP - 1 SN - 00223727 AB - Propagation and splitting of sprite streamers has been observed at high temporal and spatial resolution using two intensified high-speed CMOS cameras recording at 10 000 and 16 000 frames per second. Concurrent video recordings from a remote site provided data for triangulation allowing us to determine accurate altitude scales for the sprites. Diameters and speeds of the sprite streamers were measured from the high-speed images, and the diameters were scaled to the reduced diameters based on the triangulated locations. The sprite streamers with larger reduced diameter move faster than those with smaller diameter; the relation between the reduced diameter and speed is roughly linear. The reduced diameters at ≈65–70 km altitude are larger than streamer diameters measured at ground pressure in laboratory discharges indicating a deviation from the similarity law possibly due to the effects of the photoionization and an expansion of the streamer head along its propagation over a long distance. The reduced diameter and speed of the sprite streamers agree well with the diameter–velocity relation proposed by Naidis (2009 Phys. Rev. E 79 057401), and the peak electric field of the sprite streamers is estimated to be approximately 3–5 times the breakdown threshold field. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: D Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC discharges KW - CMOS image sensors KW - PHOTOIONIZATION KW - SPRITES (Atmospheric lightning) KW - HIGH speed optics N1 - Accession Number: 97862228; Kanmae, T. 1; Email Address: tkammae@gi.alaska.edu Stenbaek-Nielsen, H. C. 1 McHarg, M. G. 2 Haaland, R. K. 3; Affiliation: 1: Geophysical Institute, 903 Koyukuk Drive, University of Alaska Fairbanks, AK 99775-7320, USA 2: Space Physics and Atmospheric Research Center, US Air Force Academy, Colorado Springs, CO 80840, USA 3: Department of Physics and Engineering, Fort Lewis College, 1000 Rim Drive, Durango, CO 81301, USA; Source Info: 7/11/2012, Vol. 45 Issue 27, p1; Subject Term: ELECTRIC discharges; Subject Term: CMOS image sensors; Subject Term: PHOTOIONIZATION; Subject Term: SPRITES (Atmospheric lightning); Subject Term: HIGH speed optics; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0022-3727/45/27/275203 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97862228&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dennis, Patrick B. AU - Walker, Anne Y. AU - Dickerson, Matthew B. AU - Kaplan, David L. AU - Naik, Rajesh R. T1 - Stabilization of OrganophosphorusHydrolase by Entrapmentin Silk Fibroin: Formation of a Robust Enzymatic Material Suitablefor Surface Coatings. JO - Biomacromolecules JF - Biomacromolecules Y1 - 2012/07/09/ VL - 13 IS - 7 M3 - Article SP - 2037 EP - 2045 SN - 15257797 AB - Organophosphates are some of the most acutely toxic compoundssynthesizedon an industrial scale, and organophosphorus hydrolase (OPH) has theability to hydrolyze and inactivate a number of these chemicals. However,OPH activity is vulnerable to harsh environmental conditions thatwould accompany its practical utility in the field; a limitation thatcan also be extended to conditions required for incorporation of OPHinto useful materials. Here we present evidence that entrapment ofOPH in silk fibroin leads to stabilization of OPH activity under avariety of conditions that would otherwise reduce free enzyme activity,such as elevated temperature, UV light exposure and the presence ofdetergent. Silk fibroin entrapment of OPH also allowed for its dispersalinto a polyurethane-based coating that retained organophosphate hydrolysisactivity after formulation, application and drying. Together, thedata presented here demonstrate the utility of silk fibroin entrapmentfor the protection of OPH activity under a variety of environmentalconditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Biomacromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANOPHOSPHORUS compounds KW - HYDROLASES KW - SILK fibroin KW - MACROMOLECULES KW - SUPRAMOLECULAR chemistry KW - POLYURETHANES KW - SURFACE coatings N1 - Accession Number: 77687970; Dennis, Patrick B. 1 Walker, Anne Y. 1 Dickerson, Matthew B. 1 Kaplan, David L. 1 Naik, Rajesh R. 1; Affiliation: 1: †Materials and ManufacturingDirectorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States; Source Info: Jul2012, Vol. 13 Issue 7, p2037; Subject Term: ORGANOPHOSPHORUS compounds; Subject Term: HYDROLASES; Subject Term: SILK fibroin; Subject Term: MACROMOLECULES; Subject Term: SUPRAMOLECULAR chemistry; Subject Term: POLYURETHANES; Subject Term: SURFACE coatings; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77687970&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Plane, J. M. C. AU - Whalley, C. L. AU - Frances-Soriano, L. AU - Goddard, A. AU - Harvey, J. N. AU - Glowacki, D. R. AU - Viggiano, A. A. T1 - O2(a1Δg) + Mg, Fe, and Ca: Experimental kinetics and formulation of a weak collision, multiwell master equation with spin-hopping. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2012/07/07/ VL - 137 IS - 1 M3 - Article SP - 014310 EP - 014310-13 PB - American Institute of Physics SN - 00219606 AB - The first excited electronic state of molecular oxygen, O2(a1Δg), is formed in the upper atmosphere by the photolysis of O3. Its lifetime is over 70 min above 75 km, so that during the day its concentration is about 30 times greater than that of O3. In order to explore its potential reactivity with atmospheric constituents produced by meteoric ablation, the reactions of Mg, Fe, and Ca with O2(a) were studied in a fast flow tube, where the metal atoms were produced either by thermal evaporation (Ca and Mg) or by pulsed laser ablation of a metal target (Fe), and detected by laser induced fluorescence spectroscopy. O2(a) was produced by bubbling a flow of Cl2 through chilled alkaline H2O2, and its absolute concentration determined from its optical emission at 1270 nm (O2(a1Δg - X3Σg-). The following results were obtained at 296 K: k(Mg + O2(a) + N2 → MgO2 + N2) = (1.8 ± 0.2) × 10-30 cm6 molecule-2 s-1; k(Fe + O2(a) → FeO + O) = (1.1 ± 0.1) × 10-13 cm3 molecule-1 s-1; k(Ca + O2(a) + N2 → CaO2 + N2) = (2.9 ± 0.2) × 10-28 cm6 molecule-2 s-1; and k(Ca + O2(a) → CaO + O) = (2.7 ± 1.0) × 10-12 cm3 molecule-1 s-1. The total uncertainty in these rate coefficients, which mostly arises from the systematic uncertainty in the O2(a) concentration, is estimated to be ±40%. Mg + O2(a) occurs exclusively by association on the singlet surface, producing MgO2(1A1), with a pressure dependent rate coefficient. Fe + O2(a), on the other hand, shows pressure independent kinetics. FeO + O is produced with a probability of only ∼0.1%. There is no evidence for an association complex, suggesting that this reaction proceeds mostly by near-resonant electronic energy transfer to Fe(a5F) + O2(X). The reaction of Ca + O2(a) occurs in an intermediate regime with two competing pressure dependent channels: (1) a recombination to produce CaO2(1A1), and (2) a singlet/triplet non-adiabatic hopping channel leading to CaO + O(3P). In order to interpret the Ca + O2(a) results, we utilized density functional theory along with multireference and explicitly correlated CCSD(T)-F12 electronic structure calculations to examine the lowest lying singlet and triplet surfaces. In addition to mapping stationary points, we used a genetic algorithm to locate minimum energy crossing points between the two surfaces. Simulations of the Ca + O2(a) kinetics were then carried out using a combination of both standard and non-adiabatic Rice-Ramsperger-Kassel-Marcus (RRKM) theory implemented within a weak collision, multiwell master equation model. In terms of atmospheric significance, only in the case of Ca does reaction with O2(a) compete with O3 during the daytime between 85 and 110 km. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Oxygen content KW - CHEMISTRY experiments KW - CHEMICAL kinetics KW - COLLISIONS (Physics) KW - EXCITED state chemistry KW - PHOTOLYSIS (Chemistry) KW - POTENTIAL theory (Physics) KW - GAS flow N1 - Accession Number: 77656892; Plane, J. M. C. 1 Whalley, C. L. 1 Frances-Soriano, L. 1,2 Goddard, A. 1 Harvey, J. N. 3 Glowacki, D. R. 3 Viggiano, A. A. 4; Affiliation: 1: School of Chemistry, University of Leeds, Leeds LS2 9JT, 2: Department of Physical Chemistry, University of Valencia, Valencia 46100, 3: Centre for Computational Chemistry, University of Bristol, Bristol BS8 1TS, 4: Air Force Research Laboratory, Kirtland AFB, New Mexico 87117,; Source Info: 7/7/2012, Vol. 137 Issue 1, p014310; Subject Term: METALS -- Oxygen content; Subject Term: CHEMISTRY experiments; Subject Term: CHEMICAL kinetics; Subject Term: COLLISIONS (Physics); Subject Term: EXCITED state chemistry; Subject Term: PHOTOLYSIS (Chemistry); Subject Term: POTENTIAL theory (Physics); Subject Term: GAS flow; Number of Pages: 1p; Illustrations: 2 Diagrams, 3 Charts, 10 Graphs; Document Type: Article L3 - 10.1063/1.4730423 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77656892&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shiffler, Don AU - Fairchild, Steve AU - Tang, Wilkin AU - Maruyama, Benji AU - Golby, Ken AU - LaCour, Matthew AU - Pasquali, Matteo AU - Lockwood, Nathaniel T1 - Demonstration of an Acid-Spun Single-Walled Nanotube Fiber Cathode. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2012/07/02/Jul2012 Part 2 VL - 40 IS - 7 M3 - Article SP - 1871 EP - 1877 SN - 00933813 AB - Field emission dc cold cathodes continue as an important area of research for uses such as electron microscopy, novel X-ray sources, vacuum electronic devices, terahertz sources, and high-power microwave tubes. Each of these applications typically requires high current densities with high-brightness electron beams driven by cathodes exhibiting long lifetime in the presence of deleterious conditions such as ion back bombardment and excessive heating. The Air Force Research Laboratory (AFRL) now investigates cathodes operating in dc mode for use in a terahertz traveling wave tube (TWT). The TWT requires an electron beam of 50 \mu\m in diameter or less, at 10s of kiloelectronvolt energy with energy spreads of less than 10 eV. While AFRL has tested numerous cathodes in this regime, this paper reports on the first demonstration of a dc cathode utilizing a highly aligned carbon nanotube (CNT) rope for the electron emitter. The rope consists of individual single-walled CNTs that have been subjected to a nitrogen-enhanced acid etch and then spun into a rope configuration. Thus, the single rope emitter has an overall diameter of 100 \mu \m and a length of 1.5 mm. We report on preliminary results from this cathode, in particular the fabrication of the cathode, the dc cathode test system, and the cathode operation up to a voltage of 5 kV. The cathode operates stably to within 0.6% with a 5-mm anode–cathode gap at 5 keV and 1.0-mA current for hundreds of hours. Finally, we provide estimates of the cathode parameters such as the effective field enhancement factor (\betaeff) and emitting area (A) through a Fowler–Nordheim plot and comparison of the experimental data with simulations utilizing the particle-in-cell code Improved Concurrent Electromagnetic Particle-in-Cell. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SINGLE walled carbon nanotubes KW - DIRECT currents KW - CATHODES -- Performance KW - TRAVELING-wave tubes KW - TERAHERTZ technology KW - Anodes KW - Cathodes KW - Electron beams KW - electron devices KW - field emitter arrays KW - Geometry KW - high power microwave generation KW - Mathematical model KW - Power supplies KW - Voltage measurement N1 - Accession Number: 77681639; Shiffler, Don 1 Fairchild, Steve 2 Tang, Wilkin 1 Maruyama, Benji 2 Golby, Ken 3 LaCour, Matthew 4 Pasquali, Matteo 5 Lockwood, Nathaniel 1; Affiliation: 1: Air Force Research Laboratory/Directed Energy Directorate, Kirtland AFB, NM, USA 2: Air Force Research Laboratory/Materials and Manufacturing Directorate, Wright-Patterson AFB, OH, USA 3: SAIC, Inc, Albuquerque, USA 4: SAIC, Inc., Albuquerque, USA 5: Rice University, Houston, USA; Source Info: Jul2012 Part 2, Vol. 40 Issue 7, p1871; Subject Term: SINGLE walled carbon nanotubes; Subject Term: DIRECT currents; Subject Term: CATHODES -- Performance; Subject Term: TRAVELING-wave tubes; Subject Term: TERAHERTZ technology; Author-Supplied Keyword: Anodes; Author-Supplied Keyword: Cathodes; Author-Supplied Keyword: Electron beams; Author-Supplied Keyword: electron devices; Author-Supplied Keyword: field emitter arrays; Author-Supplied Keyword: Geometry; Author-Supplied Keyword: high power microwave generation; Author-Supplied Keyword: Mathematical model; Author-Supplied Keyword: Power supplies; Author-Supplied Keyword: Voltage measurement; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TPS.2012.2195328 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77681639&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gupta, Sachin AU - Abotula, Sandeep AU - Chalivendra, Vijaya AU - Shukla, Arun AU - Chona, Ravi T1 - Transient thermo-mechanical analysis of dynamic curving cracks in functionally graded materials. JO - Acta Mechanica JF - Acta Mechanica Y1 - 2012/07// VL - 223 IS - 7 M3 - Article SP - 1485 EP - 1506 PB - Springer Science & Business Media B.V. SN - 00015970 AB - Mixed-mode dynamic crack growth behavior along an arbitrarily smoothly varying path in functionally graded materials (FGMs) under transient thermo-mechanical loading is studied. An asymptotic analysis in conjunction with displacement potentials is used to develop transient thermo-mechanical stress fields around the propagating crack-tip. Asymptotic temperature field equations are derived for exponentially varying thermal properties, and later, these equations are used to derive transient thermo-mechanical stress fields for a curving crack in FGMs. The effect of the transient parameters (loading rate, crack-tip acceleration, and temperature change) and temperature gradient on the maximum principal stress and circumferential stress associated with the propagating crack-tip is discussed. Finally, using the minimum strain energy density criterion, the effect of temperature gradient, crack-tip speeds, and T-stress on crack growth directions is determined and discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Mechanica is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOPHYSICAL properties KW - FUNCTIONALLY gradient materials KW - FRACTURE mechanics KW - STRAINS & stresses (Mechanics) KW - TEMPERATURE effect KW - CRACK propagation (Fracture mechanics) KW - AXIAL loads N1 - Accession Number: 77263058; Gupta, Sachin 1; Email Address: gupsac@my.uri.edu Abotula, Sandeep 1; Email Address: sabotula@my.uri.edu Chalivendra, Vijaya 2; Email Address: vchalivendra@umassd.edu Shukla, Arun 1; Email Address: shuklaa@egr.uri.edu Chona, Ravi 3; Email Address: ravi.chona@wpafb.af.mil; Affiliation: 1: Dynamic Photo Mechanics Laboratory, Department of Mechanical, Industrial and Systems Engineering, University of Rhode Island, Kingston 02881 USA 2: Department of Mechanical Engineering, University of Massachusetts Dartmouth, North Dartmouth 02747 USA 3: Structural Sciences Center, Air Vehicles Directorate, US Air Force Research Laboratory, Wright Patterson AFB 45433-7402 USA; Source Info: Jul2012, Vol. 223 Issue 7, p1485; Subject Term: THERMOPHYSICAL properties; Subject Term: FUNCTIONALLY gradient materials; Subject Term: FRACTURE mechanics; Subject Term: STRAINS & stresses (Mechanics); Subject Term: TEMPERATURE effect; Subject Term: CRACK propagation (Fracture mechanics); Subject Term: AXIAL loads; Number of Pages: 22p; Document Type: Article L3 - 10.1007/s00707-012-0661-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77263058&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Cummings, Russell M. T1 - Editorial JO - Aerospace Science & Technology JF - Aerospace Science & Technology Y1 - 2012/07//Jul/Aug2012 VL - 20 IS - 1 M3 - Editorial SP - 1 EP - 1 SN - 12709638 N1 - Accession Number: 77451835; Cummings, Russell M. 1; Email Address: Russ.Cummings@usafa.edu; Affiliation: 1: United States Air Force Academy, USAF Academy, CO 80840, United States; Source Info: Jul/Aug2012, Vol. 20 Issue 1, p1; Number of Pages: 1p; Document Type: Editorial L3 - 10.1016/j.ast.2012.06.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77451835&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schütte, Andreas AU - Cummings, Russell M. AU - Loeser, Thomas T1 - An integrated computational/experimental approach to X-31 stability & control estimation JO - Aerospace Science & Technology JF - Aerospace Science & Technology Y1 - 2012/07//Jul/Aug2012 VL - 20 IS - 1 M3 - Article SP - 2 EP - 11 SN - 12709638 AB - Abstract: A comprehensive research program designed to investigate the ability of computational methods to predict stability and control characteristics of realistic flight vehicles has been undertaken. The approach to simulating static and dynamic stability characteristics for the X-31 configuration was performed by NATO RTO Task Group AVT-161, which resulted in an integrated computational and experimental study. The stability characteristics of the vehicle were evaluated via a highly integrated approach, where CFD and experimental results were used in a parallel and collaborative fashion. The results show that computational methods have made great strides in predicting static and dynamic stability characteristics, but several key issues need to be resolved before efficient, affordable, and reliable predictions are available. [Copyright &y& Elsevier] AB - Copyright of Aerospace Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DYNAMIC stability (Mechanics) KW - ESTIMATION theory KW - LEAST squares KW - MATHEMATICAL statistics KW - STOCHASTIC processes KW - DECISION making KW - AVT KW - CFD KW - DLR KW - DNW KW - Experiment KW - NWB KW - RTO KW - Stability and control KW - USAFA KW - Vortical flow KW - Wind tunnel KW - X-31 N1 - Accession Number: 77451836; Schütte, Andreas 1; Email Address: andreas.schuette@dlr.de Cummings, Russell M. 2 Loeser, Thomas 3; Affiliation: 1: German Aerospace Center, DLR, Braunschweig, Germany 2: United States Air Force Academy, CO, USA 3: German Dutch Wind Tunnels, DNW-NOP, Braunschweig, Germany; Source Info: Jul/Aug2012, Vol. 20 Issue 1, p2; Subject Term: DYNAMIC stability (Mechanics); Subject Term: ESTIMATION theory; Subject Term: LEAST squares; Subject Term: MATHEMATICAL statistics; Subject Term: STOCHASTIC processes; Subject Term: DECISION making; Author-Supplied Keyword: AVT; Author-Supplied Keyword: CFD; Author-Supplied Keyword: DLR; Author-Supplied Keyword: DNW; Author-Supplied Keyword: Experiment; Author-Supplied Keyword: NWB; Author-Supplied Keyword: RTO; Author-Supplied Keyword: Stability and control; Author-Supplied Keyword: USAFA; Author-Supplied Keyword: Vortical flow; Author-Supplied Keyword: Wind tunnel; Author-Supplied Keyword: X-31; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ast.2011.10.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77451836&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schütte, Andreas AU - Boelens, Okko J. AU - Oehlke, Martin AU - Jirásek, Adam AU - Loeser, Thomas T1 - Prediction of the flow around the X-31 aircraft using three different CFD methods JO - Aerospace Science & Technology JF - Aerospace Science & Technology Y1 - 2012/07//Jul/Aug2012 VL - 20 IS - 1 M3 - Article SP - 21 EP - 37 SN - 12709638 AB - Abstract: Recent results from numerical investigations regarding the complex steady state and unsteady flow physics of the X-31 configuration within the low speed flow regime are presented. These investigations are established as a contribution to the RTO/AVT-161 Task Group focusing on “Assessment of Stability and Control Prediction Methods for NATO Air and Sea Vehicles”. The status of the ability to predict the steady state and unsteady flow comparing three different CFD methods will be presented. The validation process is based on essential experimental steady and unsteady tests. These tests are done with the focus of integrating CFD and Experiment by detailed determination of wind tunnel test boundary conditions, influences on specific components of the wind tunnel model and support as well as on data acquisition process. The aim is to evaluate the status of the ability for giving a contribution to S&C analyses for configurations with non-linear aerodynamic behavior. [Copyright &y& Elsevier] AB - Copyright of Aerospace Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIND tunnel models KW - PREDICTION models KW - NONLINEAR theories KW - MODELS & modelmaking KW - MATHEMATICAL models KW - FORECASTING KW - AVT KW - CFD KW - Cobalt KW - DLR-TAU KW - DNW-NWB KW - ENSOLV KW - Experiment KW - MPM KW - RTO KW - Stability and control KW - Vortex KW - Vortical flow KW - X-31 N1 - Accession Number: 77451838; Schütte, Andreas 1; Email Address: andreas.schuette@dlr.de Boelens, Okko J. 2; Email Address: okko.boelens@nlr.nl Oehlke, Martin 3 Jirásek, Adam 4 Loeser, Thomas 5; Affiliation: 1: DLR, German Aerospace Center, D38108 Braunschweig, Germany 2: National Aerospace Laboratory NLR, P.O. Box 90502, 1006 BM, Amsterdam, The Netherlands 3: HAW Hamburg, University of Applied Science, Hamburg, Germany 4: United States Air Force Academy, USAF Academy, CO, USA 5: German-Dutch Wind Tunnels (DNW), Low-Speed-Wind-Tunnel Braunschweig (NWB), Lilienthalplatz 7, 38108 Braunschweig, Germany; Source Info: Jul/Aug2012, Vol. 20 Issue 1, p21; Subject Term: WIND tunnel models; Subject Term: PREDICTION models; Subject Term: NONLINEAR theories; Subject Term: MODELS & modelmaking; Subject Term: MATHEMATICAL models; Subject Term: FORECASTING; Author-Supplied Keyword: AVT; Author-Supplied Keyword: CFD; Author-Supplied Keyword: Cobalt; Author-Supplied Keyword: DLR-TAU; Author-Supplied Keyword: DNW-NWB; Author-Supplied Keyword: ENSOLV; Author-Supplied Keyword: Experiment; Author-Supplied Keyword: MPM; Author-Supplied Keyword: RTO; Author-Supplied Keyword: Stability and control; Author-Supplied Keyword: Vortex; Author-Supplied Keyword: Vortical flow; Author-Supplied Keyword: X-31; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.ast.2011.07.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77451838&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grotelueschen, Mark E. T1 - Ten African Heroes: The Sweep of Independence in Black Africa. JO - African Studies Quarterly JF - African Studies Quarterly Y1 - 2012///Summer2012 VL - 13 IS - 3 M3 - Book Review SP - 100 EP - 101 SN - 10932658 AB - The article reviews the book "Ten African Heroes: The Sweep of Independence in Black Africa," by Thomas Patrick Melady and Margaret Badum Melady. KW - AUTONOMY (Political science) KW - NONFICTION KW - MELADY, Margaret Badum KW - MELADY, Thomas Patrick KW - 10 African Heroes: The Sweep of Independence in Black Africa (Book) N1 - Accession Number: 89422570; Grotelueschen, Mark E. 1; Affiliation: 1: United States Air Force Academy; Source Info: Summer2012, Vol. 13 Issue 3, p100; Subject Term: AUTONOMY (Political science); Subject Term: NONFICTION; Reviews & Products: 10 African Heroes: The Sweep of Independence in Black Africa (Book); People: MELADY, Margaret Badum; People: MELADY, Thomas Patrick; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89422570&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Byard, Kyle AU - Malisow, Ben AU - France, E. B. T1 - Toward a Superior Promotion System. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2012/07//Jul/Aug2012 VL - 26 IS - 4 M3 - Article SP - 24 EP - 44 PB - Superintendent of Documents SN - 1555385X AB - The article examines the cycle of promotion procedures for the U.S. Air Force officers. It proposes an evaluation/promotion process for the officers marked by predictability, stability, and transparency. It reviews the history and purpose of the system, and explores some latter's inherent challenges. It offers suggestions to enhance the promotions process such as numerical grading by the direct supervisor and rating period of training and education on the same criteria. KW - PROMOTIONS KW - EMPLOYEES -- Rating of KW - EDUCATIONAL background KW - TRANSPARENCY (Optics) KW - UNITED States. Air Force -- Officials & employees N1 - Accession Number: 87572324; Byard, Kyle Malisow, Ben France, E. B. 1; Affiliation: 1: Permanent professor and head of the Department of Astronautics, United States Air Force Academy; Source Info: Jul/Aug2012, Vol. 26 Issue 4, p24; Subject Term: PROMOTIONS; Subject Term: EMPLOYEES -- Rating of; Subject Term: EDUCATIONAL background; Subject Term: TRANSPARENCY (Optics); Subject Term: UNITED States. Air Force -- Officials & employees; NAICS/Industry Codes: 928110 National Security; Number of Pages: 21p; Illustrations: 1 Color Photograph, 1 Chart; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87572324&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Willi, Bernie T1 - The Importance of Airpower in Supporting Irregular Warfare in Afghanistan. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2012/07//Jul/Aug2012 VL - 26 IS - 4 M3 - Opinion SP - 103 EP - 117 PB - Superintendent of Documents SN - 1555385X AB - The author discusses the importance of airpower in supporting irregular warfare (IW) in Afghanistan. He notes that the use of airpower demonstrates government responsiveness and commitment that Afghans will not forget. It examines the geographical nature of Afghanistan and its effect on aviation operations and the ways in which the Afghan Air Force (AAF) has furthered national objectives by conducting irregular warfare (IW) operations. KW - AIR power (Military science) KW - IRREGULAR warfare KW - NATIONAL security KW - ARMED Forces KW - AFGHANISTAN. Air Force N1 - Accession Number: 87572327; Willi, Bernie 1; Affiliation: 1: Chief of the Personnel Recovery Core Function Team, Headquarters Air Combat Command, Langley AFB, Virginia; Source Info: Jul/Aug2012, Vol. 26 Issue 4, p103; Subject Term: AIR power (Military science); Subject Term: IRREGULAR warfare; Subject Term: NATIONAL security; Subject Term: ARMED Forces; Subject Term: AFGHANISTAN. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 15p; Illustrations: 5 Color Photographs, 1 Graph; Document Type: Opinion UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87572327&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Titus, James T1 - Shooting the Front: Allied Aerial Reconnaissance and Photographic Interpretation on the Western Front-World War I. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2012/07//Jul/Aug2012 VL - 26 IS - 4 M3 - Book Review SP - 181 EP - 183 PB - Superintendent of Documents SN - 1555385X AB - The article reviews the book "Shooting the Front: Allied Aerial Reconnaissance and Photographic Interpretation on the Western Front: World War I" by Terrence J. Finnegan. KW - AERIAL reconnaissance (Military) KW - WORLD War, 1914-1918 KW - NONFICTION KW - FINNEGAN, Terrence J. KW - SHOOTING the Front: Allied Aerial Reconnaissance & Photographic Interpretation on the Western Front: World War I (Book) N1 - Accession Number: 87572341; Titus, James 1; Affiliation: 1: US Air Force Academy; Source Info: Jul/Aug2012, Vol. 26 Issue 4, p181; Subject Term: AERIAL reconnaissance (Military); Subject Term: WORLD War, 1914-1918; Subject Term: NONFICTION; Reviews & Products: SHOOTING the Front: Allied Aerial Reconnaissance & Photographic Interpretation on the Western Front: World War I (Book); People: FINNEGAN, Terrence J.; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=87572341&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ericson, Justin AU - Christensen, James T1 - Reallocating attention during multiple object tracking. JO - Attention, Perception & Psychophysics JF - Attention, Perception & Psychophysics Y1 - 2012/07// VL - 74 IS - 5 M3 - Article SP - 831 EP - 840 SN - 19433921 AB - Wolfe, Place, and Horowitz (Psychonomic Bulletin & Review 14:344-349, ) found that participants were relatively unaffected by selecting and deselecting targets while performing a multiple object tracking task, such that maintaining tracking was possible for longer durations than the few seconds typically studied. Though this result was generally consistent with other findings on tracking duration (Franconeri, Jonathon, & Scimeca Psychological Science 21:920-925, ), it was inconsistent with research involving cuing paradigms, specifically precues (Pylyshyn & Annan Spatial Vision 19:485-504, ). In the present research, we broke down the addition and removal of targets into separate conditions and incorporated a simple performance model to evaluate the costs associated with the selection and deselection of moving targets. Across three experiments, we demonstrated evidence against a cost being associated with any shift in attention, but rather that varying the type of cue used for target deselection produces no additional cost to performance and that hysteresis effects are not induced by a reduction in tracking load. [ABSTRACT FROM AUTHOR] AB - Copyright of Attention, Perception & Psychophysics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATTENTION KW - VISUAL perception KW - PERFORMANCE evaluation KW - HYSTERESIS KW - PSYCHOPHYSICS KW - MATHEMATICAL models KW - Object-based attention KW - Selective attention N1 - Accession Number: 77191290; Ericson, Justin; Email Address: james.christensen@wpafb.af.mil Christensen, James 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, 2255 H Street B248 Dayton 45433 USA; Source Info: Jul2012, Vol. 74 Issue 5, p831; Subject Term: ATTENTION; Subject Term: VISUAL perception; Subject Term: PERFORMANCE evaluation; Subject Term: HYSTERESIS; Subject Term: PSYCHOPHYSICS; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: Object-based attention; Author-Supplied Keyword: Selective attention; Number of Pages: 10p; Document Type: Article L3 - 10.3758/s13414-012-0294-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77191290&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ombrello, Timothy AU - Carter, Campbell AU - Katta, Viswanath T1 - Burner platform for sub-atmospheric pressure flame studies JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/07// VL - 159 IS - 7 M3 - Article SP - 2363 EP - 2373 SN - 00102180 AB - Abstract: Hencken burner flames at sub-atmospheric pressure were characterized experimentally to show their unique structure for detailed flame studies. Methane–air flames at 16.7kPa were shown to be lifted and stably anchored at significant distances (up to 18mm) above the burner surface, while maintaining a flat and one-dimensional laminar structure and near adiabatic conditions. Particle image velocimetry was used to identify the weakly stretched regime (strain rate=20–70s−1) of the flames, as well as the flame speeds, while OH number densities were measured through laser-induced fluorescence and calibrated through absorption. The flame speeds and quantitative OH profiles were compared to one-dimensional and two-dimensional flame simulations using the chemical kinetic mechanisms of USC Mech II and GRI-3.0 and showed good agreement. Flames produced by a Hencken burner at sub-atmospheric pressure were shown to accurately represent a steady, laminar, nearly one-dimensional, minimally curved, weakly stretched, and near adiabatic flame, which could be compared to one-dimensional freely-propagating flame simulations with minimal corrections and extrapolations. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATMOSPHERIC pressure KW - FLAME KW - METHANE KW - QUANTITATIVE research KW - HYDROXYL group KW - SIMULATION methods & models KW - CHEMICAL kinetics KW - REACTION mechanisms (Chemistry) KW - Flame speed KW - Hencken burner KW - Laminar flames KW - OH PLIF KW - Sub-atmospheric pressure KW - Weakly stretched N1 - Accession Number: 74991788; Ombrello, Timothy 1; Email Address: timothy.ombrello@wpafb.af.mil Carter, Campbell 1; Email Address: campbell.carter@wpafb.af.mil Katta, Viswanath 2; Email Address: vrkatta@gmail.com; Affiliation: 1: Air Force Research Laboratory, Propulsion Directorate, 1950 Fifth Street, Wright-Patterson AFB, OH 45433, United States 2: Innovative Scientific Solutions Incorporated, 2766 Indian Ripple Road, Dayton, OH 45440, United States; Source Info: Jul2012, Vol. 159 Issue 7, p2363; Subject Term: ATMOSPHERIC pressure; Subject Term: FLAME; Subject Term: METHANE; Subject Term: QUANTITATIVE research; Subject Term: HYDROXYL group; Subject Term: SIMULATION methods & models; Subject Term: CHEMICAL kinetics; Subject Term: REACTION mechanisms (Chemistry); Author-Supplied Keyword: Flame speed; Author-Supplied Keyword: Hencken burner; Author-Supplied Keyword: Laminar flames; Author-Supplied Keyword: OH PLIF; Author-Supplied Keyword: Sub-atmospheric pressure; Author-Supplied Keyword: Weakly stretched; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.combustflame.2012.03.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74991788&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cleaver, Rebecca M. AU - Lindsay, C. Michael T1 - Detailed design and transport properties of a helium droplet nozzle from 5 to 50K JO - Cryogenics JF - Cryogenics Y1 - 2012/07//Jul-Sep2012 VL - 52 IS - 7-9 M3 - Article SP - 389 EP - 397 SN - 00112275 AB - Abstract: This paper reports our efforts to engineer a robust, user-friendly, and broadly tunable helium droplet nozzle, and to quantitatively measure its thermal and mass transport performance. In addition to describing the physical design in detail, we report helium throughput measurements for a 6.4μm diameter nozzle over stagnation conditions ranging from 5 to 50K and 10 to 100bar. The measured flow rates were in excellent agreement with those predicted by a simple effusive flow model for nozzle temperatures above 20K, but were systematically lower for both sub-critical and super-critical jets as the temperature was lowered. The helium flow through a 500μm skimmer was also measured, and the skimmed fraction was found to vary by two orders of magnitude over the range of stagnation conditions investigated. These results indicate a substantial narrowing of the total jet angle spread from ∼90° to 5° at temperatures below 10K. Efforts to image the low temperature jet with Schlieren and shadowgraph techniques were unsuccessful. These details combined with previously reported theory and experiments on the droplet size distributions provide the necessary foundation to predict cluster production rates and to customize nozzle/pump designs for specific applications. [Copyright &y& Elsevier] AB - Copyright of Cryogenics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MASS transfer KW - HELIUM KW - HEAT transfer KW - NOZZLES KW - MATHEMATICAL models KW - TEMPERATURE effect KW - QUANTITATIVE research KW - PARTICLE size distribution KW - STAGNATION point KW - Helium droplet KW - Hydrodynamics KW - Multi-phase flow KW - Nozzle KW - Skimmer KW - Supersonic expansion KW - Throughput N1 - Accession Number: 76309625; Cleaver, Rebecca M. 1 Lindsay, C. Michael; Email Address: c.lindsay@us.af.mil; Affiliation: 1: Energetic Materials Branch, US Air Force Research Laboratory, Eglin AFB, FL 32542, USA; Source Info: Jul-Sep2012, Vol. 52 Issue 7-9, p389; Subject Term: MASS transfer; Subject Term: HELIUM; Subject Term: HEAT transfer; Subject Term: NOZZLES; Subject Term: MATHEMATICAL models; Subject Term: TEMPERATURE effect; Subject Term: QUANTITATIVE research; Subject Term: PARTICLE size distribution; Subject Term: STAGNATION point; Author-Supplied Keyword: Helium droplet; Author-Supplied Keyword: Hydrodynamics; Author-Supplied Keyword: Multi-phase flow; Author-Supplied Keyword: Nozzle; Author-Supplied Keyword: Skimmer; Author-Supplied Keyword: Supersonic expansion; Author-Supplied Keyword: Throughput; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 326198 All other plastic product manufacturing; NAICS/Industry Codes: 326199 All Other Plastics Product Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.cryogenics.2012.03.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76309625&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Doepke, Amos AU - Han, Changseok AU - Back, Tyson AU - Cho, Wondong AU - Dionysiou, Dionysios D. AU - Shanov, Vesselin AU - Halsall, H. Brian AU - Heineman, William R. T1 - Analysis of the Electrochemical Oxidation of Multiwalled Carbon Nanotube Tower Electrodes in Sodium Hydroxide. JO - Electroanalysis JF - Electroanalysis Y1 - 2012/07// VL - 24 IS - 7 M3 - Article SP - 1501 EP - 1508 SN - 10400397 AB - Towers of aligned multiwalled carbon nanotubes (MWCNTs) were electrochemically oxidized in aqueous 1 M NaOH. An oxidation current that decayed with time was monitored using amperometry at a fixed potential. Cyclic voltammetry showed that the background current and electrode capacitance increased after oxidation without significantly affecting the faradaic current from the reduction of ferricyanide. Oxidation in NaOH caused morphological changes and increased hydrophilicity of the MWCNT tower electrodes. XPS spectra indicated increased oxygen on the surface after oxidation, while Raman spectra indicated that a large amount of amorphous carbon was present before and after oxidation. [ABSTRACT FROM AUTHOR] AB - Copyright of Electroanalysis is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CNT KW - Electrochemical oxidation KW - Nanotubes KW - Sodium hydroxide N1 - Accession Number: 77500542; Doepke, Amos 1 Han, Changseok 2 Back, Tyson 3,4 Cho, Wondong 2 Dionysiou, Dionysios D. 2 Shanov, Vesselin 2 Halsall, H. Brian 1 Heineman, William R. 1; Affiliation: 1: Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, USA 2: School of Energy, Environmental, Biological, and Medical Engineering, University of Cincinnati, Cincinnati, Ohio 45221-0012, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Electronic and Optical Materials Branch (AFRL/RXPS), Wright-Patterson AFB, OH 45433-7077, USA 4: Universal Technology Corporation, 1270 N. Fairfield Rd, Dayton, OH 45432, USA; Source Info: Jul2012, Vol. 24 Issue 7, p1501; Author-Supplied Keyword: CNT; Author-Supplied Keyword: Electrochemical oxidation; Author-Supplied Keyword: Nanotubes; Author-Supplied Keyword: Sodium hydroxide; Number of Pages: 8p; Document Type: Article L3 - 10.1002/elan.201200105 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77500542&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiang, Hai AU - Patterson, Mark AU - Brown, Dustin AU - Zhang, Chenhao AU - Pan, KuanChang AU - Subramanyam, Guru AU - Kuhl, David AU - Leedy, Kevin AU - Cerny, Charles T1 - Miniaturized and Reconfigurable CPW Square-Ring Slot Antenna Loaded With Ferroelectric BST Thin Film Varactors. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2012/07// VL - 60 IS - 7 M3 - Article SP - 3111 EP - 3119 SN - 0018926X AB - A novel miniaturized and reconfigurable coplanar waveguide (CPW) square-ring slot antenna is presented in this paper. The miniaturization is achieved via a hybrid approach including ferroelectric varactor loadings, high dielectric constant materials, and tuning stub for impedance matching. For the first time, nine shunt ferroelectric (FE) BST (Ba(1-x)\rm Srx\rm TiO3) thin film varactors are integrated with the CPW antenna structure achieving both antenna miniaturization and reconfiguration at the same time. The size of the miniaturized antenna is reduced to 0.067\lambda0\times 0.067\lambda0 without ground, and 0.1\lambda0\times 0.1\lambda0 with ground. The resonant frequency of the miniaturized antenna can be reconfigured from 5.3 GHz to 5.8 GHz by applying a DC voltage. Measured E-plane and H-plane co-polarized patterns are presented. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SLOT antennas KW - FERROELECTRIC thin films KW - VARACTORS KW - MINIATURE electronic equipment KW - WAVEGUIDES KW - MIMO systems KW - EQUATIONS KW - Antenna miniaturization KW - coplanar waveguide (CPW) antenna KW - Coplanar waveguides KW - ferroelectric thin film KW - ferroelectric varactor KW - Iron KW - Probes KW - reconfigurable antenna KW - Slot antennas KW - slot loop antenna KW - varactor loadings KW - Varactors N1 - Accession Number: 77681469; Jiang, Hai 1 Patterson, Mark 1 Brown, Dustin 1 Zhang, Chenhao 1 Pan, KuanChang 1 Subramanyam, Guru 1 Kuhl, David 2 Leedy, Kevin 2 Cerny, Charles 2; Affiliation: 1: Department of Electrical and Computer Engineering, University of Dayton, Dayton, OH, USA 2: Air Force Research Laboratory (AFRL) Sensors Directorate, WPAFB, Dayton,; Source Info: Jul2012, Vol. 60 Issue 7, p3111; Subject Term: SLOT antennas; Subject Term: FERROELECTRIC thin films; Subject Term: VARACTORS; Subject Term: MINIATURE electronic equipment; Subject Term: WAVEGUIDES; Subject Term: MIMO systems; Subject Term: EQUATIONS; Author-Supplied Keyword: Antenna miniaturization; Author-Supplied Keyword: coplanar waveguide (CPW) antenna; Author-Supplied Keyword: Coplanar waveguides; Author-Supplied Keyword: ferroelectric thin film; Author-Supplied Keyword: ferroelectric varactor; Author-Supplied Keyword: Iron; Author-Supplied Keyword: Probes; Author-Supplied Keyword: reconfigurable antenna; Author-Supplied Keyword: Slot antennas; Author-Supplied Keyword: slot loop antenna; Author-Supplied Keyword: varactor loadings; Author-Supplied Keyword: Varactors; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TAP.2012.2196918 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77681469&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - ADLEY, MARK D. AU - FRANK, ANDREAS O. AU - DANIELSON, KENT T. AU - AKERS, STEPHEN A. AU - CARGILE, JAMES D. AU - PATTERSON, BRUCE C. AU - TERMAATH, STEPHANIE T1 - GENERATING PENETRATION RESISTANCE FUNCTIONS WITH A VIRTUAL PENETRATION LABORATORY (VPL):: APPLICATIONS TO PROJECTILE PENETRATION AND STRUCTURAL RESPONSE SIMULATIONS. JO - International Journal of Structural Stability & Dynamics JF - International Journal of Structural Stability & Dynamics Y1 - 2012/07// VL - 12 IS - 4 M3 - Article SP - 1250024-1 EP - 1250024-25 PB - World Scientific Publishing Company SN - 02194554 AB - A new software package called the Virtual Penetration Laboratory (VPL) has been developed to automatically generate and optimize penetration resistance functions. We have used this VPL code to generate highly "tuned" penetration resistance functions that can distinctly model the penetration trajectory of steel projectiles into rate-independent, elastic-perfectly plastic aluminum targets. Projectiles with arbitrary nose geometry were considered in this example (i.e. conical, ogival, and spherical nose shapes). The penetration resistance of the aluminum target was determined by numerically solving a series of spherical and cylindrical cavity expansion problems. The solution to these cavity expansion problems were obtained with an explicit, dynamic finite element code that accounts for material and geometric nonlinearities. The resulting cavity expansion equations are then transformed to penetration resistance functions using various transformation algorithms, in order to determine an appropriate method to spatially distribute the resisting stresses on the projectile nose. The resulting penetration resistance functions were then used in a penetration trajectory code to predict the actual trajectories observed from a set of similar experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Structural Stability & Dynamics is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PENETRATION mechanics KW - FUNCTIONAL analysis KW - SIMULATION methods & models KW - COMPUTER software KW - STEEL KW - STRAINS & stresses (Mechanics) KW - ALGORITHMS KW - TRAJECTORIES (Mechanics) KW - STRUCTURAL analysis (Engineering) KW - cavity expansion KW - constitutive modeling KW - Penetration mechanics N1 - Accession Number: 77656476; ADLEY, MARK D. 1; Email Address: mark.d.adley@erdc.usace.army.mil FRANK, ANDREAS O. 1 DANIELSON, KENT T. 1 AKERS, STEPHEN A. 1 CARGILE, JAMES D. 1 PATTERSON, BRUCE C. 2 TERMAATH, STEPHANIE 3; Affiliation: 1: U.S. Army Engineer Research and Development Center, ATTN: CEERD-GM-I 3909, Halls Ferry Road Vicksburg, MS 39180-6199, USA 2: U.S. Air Force Research Laboratory Munitions Directorate, Eglin AFB, FL, USA 3: Applied Research Associates, Inc. 6320 Southwest Blvd., Fort Worth, TX, USA; Source Info: Jul2012, Vol. 12 Issue 4, p1250024-1; Subject Term: PENETRATION mechanics; Subject Term: FUNCTIONAL analysis; Subject Term: SIMULATION methods & models; Subject Term: COMPUTER software; Subject Term: STEEL; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ALGORITHMS; Subject Term: TRAJECTORIES (Mechanics); Subject Term: STRUCTURAL analysis (Engineering); Author-Supplied Keyword: cavity expansion; Author-Supplied Keyword: constitutive modeling; Author-Supplied Keyword: Penetration mechanics; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 331221 Rolled Steel Shape Manufacturing; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 25p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77656476&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cheng, Liang AU - Torres, Yanira AU - Min Lee, Kyung AU - McClung, Amber J. AU - Baur, Jeffery AU - White, Timothy J. AU - Oates, William S. T1 - Photomechanical bending mechanics of polydomain azobenzene liquid crystal polymer network films. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/07// VL - 112 IS - 1 M3 - Article SP - 013513 EP - 013513-16 PB - American Institute of Physics SN - 00218979 AB - Glassy, polydomain azobenzene liquid crystal polymer networks (azo-LCNs) have been synthesized, characterized, and modeled to understand composition dependence on large amplitude, bidirectional bending, and twisting deformation upon irradiation with linearly polarized blue-green (440-514 nm) light. These materials exhibit interesting properties for adaptive structure applications in which the shape of the photoresponsive material can be rapidly reconfigured with light. The basis for the photomechanical output observed in these materials is absorption of actinic light by azobenzene, which upon photoisomerization dictates an internal stress within the local polymer network. The photoinduced evolution of the underlying liquid crystal microstructure is manifested as macroscopic deformation of the glassy polymer film. Accordingly, this work examines the polarization-controlled bidirectional bending of highly concentrated azo-LCN materials and correlates the macroscopic output (observed as bending) to measured blocked stresses upon irradiation with blue-green light of varying polarization. The resulting photomechanical output is highly dependent on the concentration of crosslinked azobenzene mesogens employed in the formulation. Experiments that quantify photomechanical bending and photogenerated stress are compared to a large deformation photomechanical shell model to quantify the effect of polarized light interactions with the material during static and dynamic polarized light induced deformation. The model comparisons illustrate differences in internal photostrain and deformation rates as a function of composition and external mechanical constraints. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AZOBENZENE KW - POLYMER liquid crystals KW - POLYMER networks KW - PHOTOMECHANICAL processes KW - DEFORMATIONS (Mechanics) N1 - Accession Number: 77829967; Cheng, Liang 1 Torres, Yanira 1 Min Lee, Kyung 2 McClung, Amber J. 2 Baur, Jeffery 2 White, Timothy J. 2 Oates, William S. 1; Affiliation: 1: Florida Center for Advanced Aero Propulsion (FCAAP), Department of Mechanical Engineering, Florida A & M and Florida State University, Tallahassee, Florida 32310, 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, 3005 Hobson Way B-651 St. 1, Wright Patterson Air Force Base, Ohio 45433-7750,; Source Info: Jul2012, Vol. 112 Issue 1, p013513; Subject Term: AZOBENZENE; Subject Term: POLYMER liquid crystals; Subject Term: POLYMER networks; Subject Term: PHOTOMECHANICAL processes; Subject Term: DEFORMATIONS (Mechanics); NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; Number of Pages: 1p; Illustrations: 1 Color Photograph, 5 Diagrams, 5 Charts, 8 Graphs; Document Type: Article L3 - 10.1063/1.4729771 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77829967&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pahud, D.M. AU - Merkin, V.G. AU - Arge, C.N. AU - Hughes, W.J. AU - McGregor, S.M. T1 - An MHD simulation of the inner heliosphere during Carrington rotations 2060 and 2068: Comparison with MESSENGER and ACE spacecraft observations JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2012/07// VL - 83 M3 - Article SP - 32 EP - 38 SN - 13646826 AB - Abstract: We present results from a new magnetohydrodynamic (MHD) model of the inner heliosphere. The model is adapted from the well-established Lyon–Fedder–Mobarry (LFM) MHD simulation code, which until recently mostly applied to studies of the terrestrial magnetosphere. We perform quasi steady-state simulations of two Carrington rotations: 2060 and 2068. During both of these periods, the heliosphere remained quiet and undisturbed by transient phenomena, making them well-suited for simulation studies of Corotating Interaction Regions (CIRs). The MHD model of the solar wind is driven at the inner boundary by the Wang–Sheeley–Arge (WSA) model of the corona augmented with empirical relations to infer the solar wind velocity, density, and temperature. Here we report on a validation exercise whereby LFM-helio simulation results are compared with in situ data from the Advanced Composition Explorer (ACE) and MErcury Surface, Space ENvironment, GEochemistry and Ranging (MESSENGER) spacecraft. We find that the model successfully reproduces the large-scale configuration of the inner heliosphere, namely timing and duration of high-speed streams and heliospheric current sheet crossings, as reflected in ACE and MESSENGER observations. Discrepancies between in situ measurements and simulations, such as 1–2 day errors in the time of arrival of a CIR or the strength of the simulated magnetic field at the spacecraft, are attributed to the uncertainty in the specification of the coronal conditions, rather than a poor performance of the solar wind model. More comparisons between different inner heliosphere models driven with identical coronal conditions are suggested as a way to explore their comparative strengths and weaknesses. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HELIOSPHERE (Astrophysics) KW - SPACE vehicles KW - MAGNETOHYDRODYNAMICS KW - SOLAR wind KW - MAGNETIC fields KW - Corotation interaction region KW - Inner heliosphere KW - LFM-helio KW - Modeling N1 - Accession Number: 77461648; Pahud, D.M. 1; Email Address: dpahud@bu.edu Merkin, V.G. 2 Arge, C.N. 3 Hughes, W.J. 1 McGregor, S.M. 1; Affiliation: 1: Astronomy Department, Boston University, 725 Commonwealth Ave, Boston, MA 02215, USA 2: The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Rd, Laurel, MD 20723-6099, USA 3: Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, NM, USA; Source Info: Jul2012, Vol. 83, p32; Subject Term: HELIOSPHERE (Astrophysics); Subject Term: SPACE vehicles; Subject Term: MAGNETOHYDRODYNAMICS; Subject Term: SOLAR wind; Subject Term: MAGNETIC fields; Author-Supplied Keyword: Corotation interaction region; Author-Supplied Keyword: Inner heliosphere; Author-Supplied Keyword: LFM-helio; Author-Supplied Keyword: Modeling; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jastp.2012.02.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77461648&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Courtney, Elijah D. S. AU - Courtney, Amy C. AU - Courtney, Michael W. T1 - BLAST WAVE TRANSMISSION THROUGH TRANSPARENT ARMOUR MATERIALS. JO - Journal of Battlefield Technology JF - Journal of Battlefield Technology Y1 - 2012/07// VL - 15 IS - 2 M3 - Article SP - 19 EP - 22 SN - 14405113 AB - Face shields and goggles used by personnel at risk of exposure to explosions are designed to protect from projectiles. However, exposure to the primary blast wave itself can lead to eye and brain injuries, yet little is reported about the ability of transparent armor materials to attenuate a blast wave. In this study, a 79 mm diameter, oxyacetylene driven shock tube was used to generate a blast-like wave with a peak pressure of 1173 kPa, and the pressure wave transmitted through six transparent armor materials was measured. With the exception of window glass (which shattered), the peak pressure was reduced by more than 20 dB by a 6.35 mm thickness of each material: cast acrylic, -22.63 dB; polycarbonate, -23.13 dB; tempered glass, -29.98 dB; laminated glass, -30.14; and aluminum oxynitride (ALON), -30.99 dB. The results show that different transparent armor materials have different abilities to attenuate a blast wave. Measurements like those in this study would be a useful part of design processes. Although ALON, a transparent ceramic, attenuated the blast wave the most, its current high cost may make tempered glass or laminated glass better value for many applications, since they performed similarly. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Battlefield Technology is the property of Argos Press Pty Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FACE masks KW - ARMORIES KW - EXPLOSIONS KW - WOUNDS & injuries KW - OXYACETYLENE welding & cutting KW - PRESSURE N1 - Accession Number: 77389111; Courtney, Elijah D. S. 1 Courtney, Amy C. 1 Courtney, Michael W. 2; Affiliation: 1: BTG Research, PO Box 62541, Colorado Springs, CO 80962, USA 2: United States Air Force Academy, 2354 Fairchild Drive, USAF Academy, CO 80840, USA; Source Info: Jul2012, Vol. 15 Issue 2, p19; Subject Term: FACE masks; Subject Term: ARMORIES; Subject Term: EXPLOSIONS; Subject Term: WOUNDS & injuries; Subject Term: OXYACETYLENE welding & cutting; Subject Term: PRESSURE; NAICS/Industry Codes: 236220 Commercial and Institutional Building Construction; NAICS/Industry Codes: 928110 National Security; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77389111&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - White, Timothy J. T1 - Light to work transduction and shape memory in glassy, photoresponsive macromolecular systems: Trends and opportunities. JO - Journal of Polymer Science Part B: Polymer Physics JF - Journal of Polymer Science Part B: Polymer Physics Y1 - 2012/07// VL - 50 IS - 13 M3 - Article SP - 877 EP - 880 SN - 08876266 AB - Light can wirelessly direct functional responses in photoresponsive polymeric materials and composites. The intensity, phase, and polarization of light can be spatially modulated into complex patterns with holography (intensity or polarization) or masking (intensity or phase). Deriving from these foundational properties of light, photoresponsive macromolecular systems exhibit exceeding potential to yield rapid and highly engineered macroscopic as well as spatially selectable mechanically adaptive responses useful as soft actuators or topographical surfaces in aerospace, automotive, and biomedical applications. © 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2012 [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Polymer Science Part B: Polymer Physics is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHAPE memory polymers KW - RESEARCH KW - AMORPHOUS substances KW - POLYMERS -- Research KW - MACROMOLECULES KW - OPTICAL polarization KW - amorphous KW - azo polymers KW - glassy polymers KW - photochemistry KW - shape memory N1 - Accession Number: 75505948; White, Timothy J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, 3005 Hobson Way Ste. 1, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jul2012, Vol. 50 Issue 13, p877; Subject Term: SHAPE memory polymers; Subject Term: RESEARCH; Subject Term: AMORPHOUS substances; Subject Term: POLYMERS -- Research; Subject Term: MACROMOLECULES; Subject Term: OPTICAL polarization; Author-Supplied Keyword: amorphous; Author-Supplied Keyword: azo polymers; Author-Supplied Keyword: glassy polymers; Author-Supplied Keyword: photochemistry; Author-Supplied Keyword: shape memory; Number of Pages: 4p; Document Type: Article L3 - 10.1002/polb.23079 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75505948&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Koepfler, James AU - Brewster, JoAnne AU - Englert, David T1 - Characteristics of Decredentialed Agents in a Military Law Enforcement Agency. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2012/07// VL - 24 IS - 4 M3 - Article SP - 347 EP - 362 PB - Taylor & Francis Ltd SN - 08995605 AB - We used archival data from 99 decredentialed agents, 52 non-decredentialed agents, and 46 agents who earned awards to examine whether information obtained at the time of selection would be useful in predicting problematic behaviors of federal law enforcement military personnel. We found that agents were decredentialed most commonly for inappropriate sexual behavior and behavior for personal gain; decredentialing tended to occur early in the agent's career. In about a quarter of decredentialing cases, agents were deployed or were on temporary duty outside the country. We discuss implications of our findings for selecting, training, and supervising law enforcement agents within military organizations. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORRUPTION KW - LABOR discipline KW - MINNESOTA Multiphasic Personality Inventory KW - ORGANIZATIONAL behavior KW - PERSONALITY KW - PERSONALITY tests KW - POLICE KW - PROFESSIONS KW - MILITARY personnel KW - JOB qualifications KW - MEDICAL records KW - RESEARCH KW - DESCRIPTIVE statistics N1 - Accession Number: 77570881; Koepfler, James 1 Brewster, JoAnne 1; Email Address: brewstja@jmu.edu Englert, David 2; Affiliation: 1: Department of Graduate Psychology, James Madison University, Harrisonburg, Virginia, USA 2: Malcolm Grow Medical Center, Andrews Air Force Base, United States Air Force, Maryland, USA; Source Info: 2012, Vol. 24 Issue 4, p347; Subject Term: CORRUPTION; Subject Term: LABOR discipline; Subject Term: MINNESOTA Multiphasic Personality Inventory; Subject Term: ORGANIZATIONAL behavior; Subject Term: PERSONALITY; Subject Term: PERSONALITY tests; Subject Term: POLICE; Subject Term: PROFESSIONS; Subject Term: MILITARY personnel; Subject Term: JOB qualifications; Subject Term: MEDICAL records; Subject Term: RESEARCH; Subject Term: DESCRIPTIVE statistics; NAICS/Industry Codes: 922120 Police Protection; NAICS/Industry Codes: 913130 Municipal police services; NAICS/Industry Codes: 912130 Provincial police services; NAICS/Industry Codes: 911230 Federal police services; NAICS/Industry Codes: 813920 Professional Organizations; Number of Pages: 16p; Document Type: Article L3 - 10.1080/08995605.2012.695253 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77570881&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anderson, Monte D. AU - Perram, Glen P. T1 - Optical delay with spectral hole burning in Doppler-broadened cesium vapor JO - Optics Communications JF - Optics Communications Y1 - 2012/07// VL - 285 IS - 15 M3 - Article SP - 3264 EP - 3268 SN - 00304018 AB - Abstract: The full frequency dependence of the optical delay in the Cs D 1 (6 2S1/2 −6 2P1/2) line has been observed, including all four hyperfine split components. Pulse delays of 1.6ns to 24.1ns are obtained by scanning across the hyperfine splitting associated with the lower 2S1/2 state. Optical control of pulse delays in cesium vapor was demonstrated by pumping the D 2 (6 2S1/2 −6 2P3/2) transition and observing resulting holes in the D 1 delay spectrum. For a pump at four times the saturation intensity, the pulse delays are reduced by a maximum of 78% in a narrow region of 110MHz. The frequency dependence of the delays of the probe laser in the vicinity of the spectral holes agrees with a Kramers–Kronig model prediction. [Copyright &y& Elsevier] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL delay lines KW - OPTICAL hole burning KW - DOPPLER effect KW - SPECTRAL line broadening KW - CESIUM vapor KW - HYPERFINE interactions KW - OPTICAL pumping KW - Alkali metal vapor KW - Group delay KW - Hole burning KW - Slow light N1 - Accession Number: 76310619; Anderson, Monte D. 1; Email Address: monte.anderson@usafa.edu Perram, Glen P. 2; Email Address: glen.perram@afit.edu; Affiliation: 1: Department of Physics, United States Air Force Academy, 2354 Fairchild Drive, U.S. Air Force Academy CO 80840, United States 2: Department of Engineering Physics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson Air Force Base OH 45433, United States; Source Info: Jul2012, Vol. 285 Issue 15, p3264; Subject Term: OPTICAL delay lines; Subject Term: OPTICAL hole burning; Subject Term: DOPPLER effect; Subject Term: SPECTRAL line broadening; Subject Term: CESIUM vapor; Subject Term: HYPERFINE interactions; Subject Term: OPTICAL pumping; Author-Supplied Keyword: Alkali metal vapor; Author-Supplied Keyword: Group delay; Author-Supplied Keyword: Hole burning; Author-Supplied Keyword: Slow light; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.optcom.2012.03.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76310619&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - HANDLER, TRISTAN E. AU - MICHAELIS, KYLE J. AU - BRUNO, TODD A. AU - MARTIN, DONALD J. T1 - Improvised Transvenous Cardiac Pacing during Operation Enduring Freedom. JO - Pacing & Clinical Electrophysiology JF - Pacing & Clinical Electrophysiology Y1 - 2012/07// VL - 35 IS - 7 M3 - Article SP - e187 EP - e188 PB - Wiley-Blackwell SN - 01478389 AB - We report a case of combat cardiology at a military medical facility in Afghanistan. The patient had a high-degree heart block following inferior ST-elevation myocardial infarction requiring cardiac pacing. Transcutaneous pacing failed, leading to asystolic arrest during critical care air transport. An available transvenous pacing wire was soldered to leads from transcutaneous pacing pads allowing effective in-flight cardiac pacing until definitive therapy was available. This case demonstrates use of available resources under austere conditions, has the potential to inform physicians in similar circumstance, and addresses an area of need at military medical facilities. (PACE 2011;1-2) [ABSTRACT FROM AUTHOR] AB - Copyright of Pacing & Clinical Electrophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARDIAC arrest -- Treatment KW - CARDIAC pacing KW - EQUIPMENT & supplies KW - METHODOLOGY KW - EMERGENCY medical services KW - ACLS KW - asystolic arrest KW - emergency air transport KW - transvenous pacing N1 - Accession Number: 77497052; HANDLER, TRISTAN E. 1 MICHAELIS, KYLE J. 2 BRUNO, TODD A. 3 MARTIN, DONALD J. 1; Affiliation: 1: Department of Internal Medicine, RAF Lakenheath, UK 2: Cardiology 3: Nephrology, David Grant Medical Center, Travis AFB; United States Air Force; Source Info: Jul2012, Vol. 35 Issue 7, pe187; Subject Term: CARDIAC arrest -- Treatment; Subject Term: CARDIAC pacing; Subject Term: EQUIPMENT & supplies; Subject Term: METHODOLOGY; Subject Term: EMERGENCY medical services; Author-Supplied Keyword: ACLS; Author-Supplied Keyword: asystolic arrest; Author-Supplied Keyword: emergency air transport; Author-Supplied Keyword: transvenous pacing; NAICS/Industry Codes: 913130 Municipal police services; NAICS/Industry Codes: 624230 Emergency and Other Relief Services; Number of Pages: 2p; Document Type: Article L3 - 10.1111/j.1540-8159.2011.03136.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77497052&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Richards, B. C. AU - Hendrickson, J. AU - Olitzky, J. D. AU - Gibson, R. AU - Gehl, M. AU - Kieu, K. AU - Polynkin, P. AU - Khitrova, G. AU - Gibbs, H. M. AU - Khankhoje, U. K. AU - Homyk, A. AU - Scherer, A. AU - Kim, J.-Y. AU - Lee, Y.-H. T1 - Progress in growth, fabrication, and characterization of semiconductor photonic crystal nanocavities [Phys. Status Solidi B 248, No. 4, 892-896 (2011)]. JO - Physica Status Solidi (B) JF - Physica Status Solidi (B) Y1 - 2012/07// VL - 249 IS - 7 M3 - Article SP - 1477 EP - 1477 SN - 03701972 AB - An error was made in the calculation of the photonic crystal mode volume. Fixing this error increases our mode volume by a factor of 2 and makes our claim of highest Q/ V invalid. [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi (B) is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - microcavities KW - nanophotonics KW - photonic crystals N1 - Accession Number: 77499630; Richards, B. C. 1 Hendrickson, J. 2 Olitzky, J. D. 3 Gibson, R. 3 Gehl, M. 3 Kieu, K. 3 Polynkin, P. 3 Khitrova, G. 3 Gibbs, H. M. 3 Khankhoje, U. K. 4 Homyk, A. 5 Scherer, A. 5 Kim, J.-Y. 6 Lee, Y.-H. 6; Affiliation: 1: Advanced Concepts Team, Emcore Corporation, 10420 Research Rd., Albuquerque, NM 87123, USA 2: Air Force Research Laboratory, Sensors Directrorate, 2241 Avionics Circle, Wright Patterson AFB, OH 45433, USA 3: College of Optical Sciences, University of Arizona, 1630 E. University Blvd., Tucson, AZ 85721, USA 4: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA 5: Electrical Engineering and Kavli Nanoscience Institute, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, USA 6: Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea; Source Info: Jul2012, Vol. 249 Issue 7, p1477; Author-Supplied Keyword: microcavities; Author-Supplied Keyword: nanophotonics; Author-Supplied Keyword: photonic crystals; Number of Pages: 1p; Document Type: Article L3 - 10.1002/pssb.201248147 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77499630&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brillson, Leonard J. AU - Dong, Y. AU - Tuomisto, F. AU - Svensson, B. G. AU - Kuznetsov, A. Yu. AU - Doutt, D. AU - Mosbacker, H. L. AU - Cantwell, G. AU - Zhang, J. AU - Song, J. J. AU - Fang, Z.-Q. AU - Look, D. C. T1 - Native point defects at ZnO surfaces, interfaces and bulk films. JO - Physica Status Solidi (C) JF - Physica Status Solidi (C) Y1 - 2012/07// VL - 9 IS - 7 M3 - Article SP - 1566 EP - 1569 SN - 18626351 AB - The impact of electronically-active native point defects on ZnO optoelectronic technologies at the nanoscale is only now being explored. We are able to address the impact of these defects on Schottky barrier formation and doping using a combination of depth-resolved and scanned probe techniques. We clearly identify the optical transitions and energies of VZn and VZn clusters, Ga on Zn site donors, Li on Zn sites, the effects of different annealing methods on their spatial distributions in ion-implanted as well as Ga grown-in ZnO, and how VZn, VZn clusters, and VO complexes contribute to near- and sub-surface carrier density. These results reveal the interplay between ZnO electronic defects, polarity, and surface nanostructure. Overall, the influence of native point defects on doping, Schottky barriers, and transport point to new ways for controlling these properties (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi (C) is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - defect KW - doping KW - Schottky barrier KW - ZnO N1 - Accession Number: 77509724; Brillson, Leonard J. 1,2 Dong, Y. 1 Tuomisto, F. 3 Svensson, B. G. 4 Kuznetsov, A. Yu. 4 Doutt, D. 2 Mosbacker, H. L. 2 Cantwell, G. 5 Zhang, J. 5 Song, J. J. 5 Fang, Z.-Q. 6 Look, D. C. 6,7; Affiliation: 1: Department of Electrical & Computer Engineering, The Ohio State University, Columbus, OH 43210, USA 2: Department of Physics, The Ohio State University, Columbus, OH 43210, USA 3: Department of Applied Physics, Helsinki University of Technology, P.O. Box 1100, Helsinki 02015 TKK, Finland 4: Department of Physics, University of Oslo, P.O. Box 1048, Blindern, 0316 Oslo, Norway 5: ZN Technology, Inc., 910 Columbia St., Brea, CA 9282, USA 6: Semiconductor Research Center, Wright State University, Dayton, OH 45433, USA 7: Sensors Directorate, Air Force Research Laboratory, WPAFB, OH 45433, USA; Source Info: Jul2012, Vol. 9 Issue 7, p1566; Author-Supplied Keyword: defect; Author-Supplied Keyword: doping; Author-Supplied Keyword: Schottky barrier; Author-Supplied Keyword: ZnO; Number of Pages: 4p; Document Type: Article L3 - 10.1002/pssc.201100538 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77509724&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Avella, M. AU - Hortelano, V. AU - Martínez, O. AU - Mass, J. AU - Jiménez, J. AU - Wang, B. AU - Drevinsky, P. AU - Bliss, D. T1 - Cathodoluminescence study of e-irradiated and plastically deformed ZnO crystals. JO - Physica Status Solidi (C) JF - Physica Status Solidi (C) Y1 - 2012/07// VL - 9 IS - 7 M3 - Article SP - 1580 EP - 1582 SN - 18626351 AB - Intrinsic defects are generated by e-irrradiation, and plastic deformation in ZnO crystals. Spectrally resolved cathodoluminescence (CL) experiments permit the analysis of the optical signature of those defects. We present herein a CL analysis of ZnO crystals irradiated with high energy electrons, and plastically deformed by Vickers indentation. Spectral changes around 3.3 eV and in the deep level emission are observed in the irradiated samples. These changes are compared to those observed around the extended defects introduced by Vickers indentation, which present a similar signature to the e-irradiated samples, suggesting relation between the defects generated by plastic deformation and e-irradiation. Zn vacancies seem to be the dominant defects generated in both processes (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi (C) is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - cathodoluminescence KW - e-irradiation KW - intrinsic defects KW - plastic deformation KW - ZnO N1 - Accession Number: 77509739; Avella, M. 1 Hortelano, V. 1 Martínez, O. 1 Mass, J. 2 Jiménez, J. 1 Wang, B. 3 Drevinsky, P. 4 Bliss, D. 4; Affiliation: 1: GdS Optronlab., Univ. de Valladolid, Paseo de Belén 1, 47011 Valladolid, Spain 2: Grupo de Física Aplicada, Universidad del Norte, km 5, Vía Pto. Colombia, Barranquilla, Colombia 3: Solid State Scientific Corp., 27-2 Wright Rd., Hollis, NH 03049, USA 4: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA 01731, USA; Source Info: Jul2012, Vol. 9 Issue 7, p1580; Author-Supplied Keyword: cathodoluminescence; Author-Supplied Keyword: e-irradiation; Author-Supplied Keyword: intrinsic defects; Author-Supplied Keyword: plastic deformation; Author-Supplied Keyword: ZnO; Number of Pages: 3p; Document Type: Article L3 - 10.1002/pssc.201100557 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77509739&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hortelano, V. AU - Martínez, O. AU - Jiménez, J. AU - Lynch, C. AU - Snure, M. AU - Bliss, D. T1 - Spectrally resolved cathodoluminescence imaging study of periodic [001]/[00-1] GaAs structures for nonlinear optical conversion. JO - Physica Status Solidi (C) JF - Physica Status Solidi (C) Y1 - 2012/07// VL - 9 IS - 7 M3 - Article SP - 1674 EP - 1676 SN - 18626351 AB - Orientation patterned (OP)-GaAs crystals are very promising as nonlinear optical materials. They are suitable for mid-infrared and terahertz laser sources, by frequency conversion of shorter wavelength pump sources. OP-GaAs crystals must contain low concentrations of defects and must be homogeneous to reduce fluctuations, in the refractive index and the concomitant optical propagation losses. Understanding of the defects with electrooptic signature is crucial to improve the growth conditions for reducing their presence. Spectrally resolved cathodoluminescence imaging is used to study the main defects and how they are distributed throughout the OP-GaAs crystal (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR] AB - Copyright of Physica Status Solidi (C) is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - cathodoluminescence KW - mid infrared KW - OP-GaAs N1 - Accession Number: 77509771; Hortelano, V. 1 Martínez, O. 1 Jiménez, J. 1 Lynch, C. 2 Snure, M. 2 Bliss, D. 2; Affiliation: 1: GdS Optronlab., Univ. de Valladolid, Paseo de Belén 1, 47011 Valladolid, Spain 2: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA 01731, USA; Source Info: Jul2012, Vol. 9 Issue 7, p1674; Author-Supplied Keyword: cathodoluminescence; Author-Supplied Keyword: mid infrared; Author-Supplied Keyword: OP-GaAs; Number of Pages: 3p; Document Type: Article L3 - 10.1002/pssc.201100544 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77509771&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vallespin, D. AU - Badcock, K.J. AU - Da Ronch, A. AU - White, M.D. AU - Perfect, P. AU - Ghoreyshi, M. T1 - Computational fluid dynamics framework for aerodynamic model assessment JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences Y1 - 2012/07// VL - 52 M3 - Article SP - 2 EP - 18 SN - 03760421 AB - Abstract: This paper reviews the work carried out at the University of Liverpool to assess the use of CFD methods for aircraft flight dynamics applications. Three test cases are discussed in the paper, namely, the Standard Dynamic Model, the Ranger 2000 jet trainer and the Stability and Control Unmanned Combat Air Vehicle. For each of these, a tabular aerodynamic model based on CFD predictions is generated along with validation against wind tunnel experiments and flight test measurements. The main purpose of the paper is to assess the validity of the tables of aerodynamic data for the force and moment prediction of realistic aircraft manoeuvres. This is done by generating a manoeuvre based on the tables of aerodynamic data, and then replaying the motion through a time-accurate computational fluid dynamics calculation. The resulting forces and moments from these simulations were compared with predictions from the tables. As the latter are based on a set of steady-state predictions, the comparisons showed perfect agreement for slow manoeuvres. As manoeuvres became more aggressive some disagreement was seen, particularly during periods of large rates of change in attitudes. Finally, the Ranger 2000 model was used on a flight simulator. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTATIONAL fluid dynamics KW - AERODYNAMICS KW - AIRCRAFT fleets KW - FLIGHT testing KW - FORCE & energy KW - FLIGHT simulators KW - Aircraft manoeuvre KW - CFD KW - Flight dynamics KW - Manoeuvre N1 - Accession Number: 75181046; Vallespin, D. 1; Email Address: D.Vallespin@liverpool.ac.uk Badcock, K.J. 1; Email Address: kbadcock@liverpool.ac.uk Da Ronch, A. 1; Email Address: andreadr@liverpool.ac.uk White, M.D. 1; Email Address: mdw@liverpool.ac.uk Perfect, P. 1; Email Address: me0u114a@liverpool.ac.uk Ghoreyshi, M. 2; Email Address: mehdi.ghoreyshi.ctr.gb@usafa.edu; Affiliation: 1: Department of Engineering, University of Liverpool, L69 3BX, United Kingdom 2: United States Air Force Academy, USAF Academy, CO 80840, United States; Source Info: Jul2012, Vol. 52, p2; Subject Term: COMPUTATIONAL fluid dynamics; Subject Term: AERODYNAMICS; Subject Term: AIRCRAFT fleets; Subject Term: FLIGHT testing; Subject Term: FORCE & energy; Subject Term: FLIGHT simulators; Author-Supplied Keyword: Aircraft manoeuvre; Author-Supplied Keyword: CFD; Author-Supplied Keyword: Flight dynamics; Author-Supplied Keyword: Manoeuvre; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.paerosci.2011.12.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75181046&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Billock, Vincent A. AU - Tsou, Brian H. T1 - Elementary Visual Hallucinations and Their Relationships to Neural Pattern-Forming Mechanisms. JO - Psychological Bulletin JF - Psychological Bulletin Y1 - 2012/07// VL - 138 IS - 4 M3 - Article SP - 744 EP - 774 SN - 00332909 AB - An extraordinary variety of experimental (e.g., flicker, magnetic fields) and clinical (epilepsy, migraine) conditions give rise to a surprisingly common set of elementary hallucinations, including spots, geometric patterns, and jagged lines, some of which also have color, depth, motion, and texture. Many of these simple hallucinations fall into a small number of perceptual geometries--the Klüver forms--that (via a nonlinear mapping from retina to cortex) correspond to even simpler sets of oriented stripes of cortical activity (and their superpositions). Other simple hallucinations (phosphenes and fortification auras) are linked to the Klüver forms and to pattern-forming cortical mechanisms by their spatial and temporal scales. The Klüver cortical activity patterns are examples of self-organized pattern formation that arise from nonlinear dynamic interactions between excitatory and inhibitory cortical neurons; with reasonable modifications, this model accounts for a wide range of hallucinated patterns. The Klüver cortical activity patterns are a subset of autonomous spatiotemporal cortical patterns, some of which have been studied with functional imaging techniques. Understanding the interaction of these intrinsic patterns with stimulus-driven cortical activity is an important problem in neuroscience. In line with this, hallucinatory pattern formation interacts with physical stimuli, and many conditions that induce hallucinations show interesting interactions with one another. Both types of interactions are predictable from neural and psychophysical principles such as localized processing, excitatory-inhibitory neural circuits, lateral inhibition, simultaneous and sequential contrast, saccadic suppression, and perceptual opponency. Elementary hallucinations arise from familiar mechanisms stimulated in unusual ways. [ABSTRACT FROM AUTHOR] AB - Copyright of Psychological Bulletin is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HALLUCINATIONS & illusions KW - PERCEPTUAL disorders KW - MIGRAINE KW - HEADACHE KW - PHOSPHENES KW - intrinsic neural activity KW - Klüver form constant KW - migraine fortification aura KW - phosphene KW - spatiotemporal pattern formation N1 - Accession Number: 77426199; Billock, Vincent A. 1; Email Address: vincent.billock.ctr@wpafb.af.mil Tsou, Brian H. 1; Affiliation: 1: U.S. Air Force Research Laboratory; Source Info: Jul2012, Vol. 138 Issue 4, p744; Subject Term: HALLUCINATIONS & illusions; Subject Term: PERCEPTUAL disorders; Subject Term: MIGRAINE; Subject Term: HEADACHE; Subject Term: PHOSPHENES; Author-Supplied Keyword: intrinsic neural activity; Author-Supplied Keyword: Klüver form constant; Author-Supplied Keyword: migraine fortification aura; Author-Supplied Keyword: phosphene; Author-Supplied Keyword: spatiotemporal pattern formation; Number of Pages: 31p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77426199&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lewis, William K. AU - Harruff-Miller, Barbara A. AU - Gord, Michael A. AU - Gord, Joseph R. AU - Guliants, Elena A. AU - Bunker, Christopher E. T1 - A threshold-based approach to calorimetry in helium droplets: Measurement of binding energies of water clusters. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2012/07// VL - 83 IS - 7 M3 - Article SP - 073109 EP - 073109-5 PB - American Institute of Physics SN - 00346748 AB - Helium droplet beam methods have emerged as a versatile technique that can be used to assemble a wide variety of atomic and molecular clusters. We have developed a method to measure the binding energies of clusters assembled in helium droplets by determining the minimum droplet sizes required to assemble and detect selected clusters in the spectrum of the doped droplet beam. The differences in the droplet sizes required between the various multimers are then used to estimate the incremental binding energies. We have applied this method to measure the binding energies of cyclic water clusters from the dimer to the tetramer. We obtain measured values of D0 that are in agreement with theoretical estimates to within ∼20%. Our results suggest that this threshold-based approach should be generally applicable using either mass spectrometry or optical spectroscopy techniques for detection, provided that the clusters selected for study are at least as strongly bound as those of water, and that a peak in the overall spectrum of the beam corresponding only to the cluster chosen (at least in the vicinity of the threshold) can be located. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CALORIMETRY KW - BINDING energy KW - WATER clusters KW - MASS spectrometry KW - OPTICAL spectrometers KW - TEMPERATURE measurements N1 - Accession Number: 78220120; Lewis, William K. 1 Harruff-Miller, Barbara A. 1 Gord, Michael A. 1 Gord, Joseph R. 1 Guliants, Elena A. 1 Bunker, Christopher E. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469, 2: United States Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: Jul2012, Vol. 83 Issue 7, p073109; Subject Term: CALORIMETRY; Subject Term: BINDING energy; Subject Term: WATER clusters; Subject Term: MASS spectrometry; Subject Term: OPTICAL spectrometers; Subject Term: TEMPERATURE measurements; Number of Pages: 1p; Illustrations: 1 Diagram, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.4738664 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78220120&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beal, Brian AU - Johnson, Lee AU - Brown, Daniel AU - Blakely, Joseph AU - Bromaghim, Daron T1 - Improved analysis techniques for cylindrical and spherical double probes. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2012/07// VL - 83 IS - 7 M3 - Article SP - 073506 EP - 073506-5 PB - American Institute of Physics SN - 00346748 AB - A versatile double Langmuir probe technique has been developed by incorporating analytical fits to Laframboise's numerical results for ion current collection by biased electrodes of various sizes relative to the local electron Debye length. Application of these fits to the double probe circuit has produced a set of coupled equations that express the potential of each electrode relative to the plasma potential as well as the resulting probe current as a function of applied probe voltage. These equations can be readily solved via standard numerical techniques in order to determine electron temperature and plasma density from probe current and voltage measurements. Because this method self-consistently accounts for the effects of sheath expansion, it can be readily applied to plasmas with a wide range of densities and low ion temperature (Ti/Te < 1) without requiring probe dimensions to be asymptotically large or small with respect to the electron Debye length. The presented approach has been successfully applied to experimental measurements obtained in the plume of a low-power Hall thruster, which produced a quasineutral, flowing xenon plasma during operation at 200 W on xenon. The measured plasma densities and electron temperatures were in the range of 1 × 1012-1 × 1017 m-3 and 0.5-5.0 eV, respectively. The estimated measurement uncertainty is +6%/-34% in density and +/-30% in electron temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROBES (Electronic instruments) KW - ELECTRON temperature KW - XENON KW - PLASMA density KW - ELECTRONIC apparatus & appliances -- Testing KW - MICROPROBE analysis N1 - Accession Number: 78220046; Beal, Brian 1 Johnson, Lee 2 Brown, Daniel 1 Blakely, Joseph 3 Bromaghim, Daron 1; Affiliation: 1: Air Force Research Laboratory, 1 Ara Rd., Edwards Air Force Base, California 93524, 2: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, California 91109, 3: ERC Inc., 1 Ara Rd., Edwards Air Force Base, California 93524,; Source Info: Jul2012, Vol. 83 Issue 7, p073506; Subject Term: PROBES (Electronic instruments); Subject Term: ELECTRON temperature; Subject Term: XENON; Subject Term: PLASMA density; Subject Term: ELECTRONIC apparatus & appliances -- Testing; Subject Term: MICROPROBE analysis; Number of Pages: 1p; Illustrations: 1 Diagram, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.4739221 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78220046&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - GHRIST, MICHELLE AU - FORNBERG, BENGT T1 - TWO RESULTS CONCERNING THE STABILITY OF STAGGERED MULTISTEP METHODS. JO - SIAM Journal on Numerical Analysis JF - SIAM Journal on Numerical Analysis Y1 - 2012/07// VL - 50 IS - 4 M3 - Article SP - 1849 EP - 1860 SN - 00361429 AB - Staggered spatial node layouts are widely used in the context of solving wave equations. When this idea of staggering is extended to time integrators for wave equations, one finds methods that offer both better accuracy and less restrictive stability conditions for an equivalent computational cost. Here, we prove two results concerning staggered multistep methods. We first prove that staggered backwards differentiation methods are unstable for all orders p ≥ 5. We then extend Dahlquist's first stability barrier to explicit staggered multistep methods. [ABSTRACT FROM AUTHOR] AB - Copyright of SIAM Journal on Numerical Analysis is the property of Society for Industrial & Applied Mathematics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPATIAL analysis (Statistics) KW - WAVE equation KW - FINITE differences KW - DIFFERENTIATION (Mathematics) KW - PARTIAL differential equations KW - Dahlquist's first stability barrier KW - linear multistep methods KW - staggered backwards differentiation method KW - staggered finite difference methods KW - time integrators N1 - Accession Number: 83287421; GHRIST, MICHELLE 1; Email Address: michelle.ghrist@usafa.edu FORNBERG, BENGT 2; Affiliation: 1: Department of Mathematical Sciences, United States Air Force Academy, USAFA, CO 80840-6252 2: Department of Applied Mathematics, University of Colorado, Boulder, CO 80309; Source Info: 2012, Vol. 50 Issue 4, p1849; Subject Term: SPATIAL analysis (Statistics); Subject Term: WAVE equation; Subject Term: FINITE differences; Subject Term: DIFFERENTIATION (Mathematics); Subject Term: PARTIAL differential equations; Author-Supplied Keyword: Dahlquist's first stability barrier; Author-Supplied Keyword: linear multistep methods; Author-Supplied Keyword: staggered backwards differentiation method; Author-Supplied Keyword: staggered finite difference methods; Author-Supplied Keyword: time integrators; Number of Pages: 12p; Document Type: Article L3 - 10.1137/110837541 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83287421&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhou, Zhong AU - Bhamare, Sagar AU - Ramakrishnan, Gokul AU - Mannava, Seetha R. AU - Langer, Kristina AU - Wen, Youhai AU - Qian, Dong AU - Vasudevan, Vijay K. T1 - Thermal relaxation of residual stress in laser shock peened Ti–6Al–4V alloy JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2012/06/25/ VL - 206 IS - 22 M3 - Article SP - 4619 EP - 4627 SN - 02578972 AB - Abstract: Laser shock peening (LSP) induced residual stresses in Ti–6Al–4V, and their thermal relaxation due to short-term exposure at elevated temperatures are investigated by an integrated modeling/simulation and experimental approach. A rate and temperature-dependent plasticity model in the form of Johnson–Cook (JC) has been employed to represent the nonlinear constitutive behavior under both LSP and thermal loads. By comparing the simulation results with experimental data, model parameters for Ti–6Al–4V are first calibrated and subsequently applied in analyzing the thermal stability of the residual stress in LSP-treated Ti–6Al–4V. The analysis shows that the magnitude of stress relaxation increases with the increase of applied temperature due to material softening. Most of stress relaxation occurs before 10min to 20min exposure in this study, and stress distribution becomes more uniform after thermal exposure. An analytical model based on the Zener–Wert–Avrami formula is then developed based on the simulation results. The activation enthalpy of the relaxation process for laser shock peened Ti–6Al–4V is determined to be in the range of 0.71eV to 1.37eV. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM-aluminum-vanadium alloys KW - RESIDUAL stresses KW - THERMAL analysis KW - RELAXATION phenomena KW - LASER peening KW - HIGH temperatures KW - SIMULATION methods & models KW - Finite element analysis KW - Laser shock peening KW - Residual stress KW - Thermal relaxation KW - Ti–6Al–4V N1 - Accession Number: 76615226; Zhou, Zhong 1 Bhamare, Sagar 1 Ramakrishnan, Gokul 1 Mannava, Seetha R. 1 Langer, Kristina 2 Wen, Youhai 3 Qian, Dong 1; Email Address: dong.qian@uc.edu Vasudevan, Vijay K. 1; Affiliation: 1: School of Dynamic Systems, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH 45221, USA 2: Air Force Research Laboratory/RBSM, Wright Patterson Air Force Base, Dayton, OH 45433, USA 3: National Energy Technology Laboratory, 1450 Queen Ave SW, Albany, OR 97321, USA; Source Info: 6/25/2012, Vol. 206 Issue 22, p4619; Subject Term: TITANIUM-aluminum-vanadium alloys; Subject Term: RESIDUAL stresses; Subject Term: THERMAL analysis; Subject Term: RELAXATION phenomena; Subject Term: LASER peening; Subject Term: HIGH temperatures; Subject Term: SIMULATION methods & models; Author-Supplied Keyword: Finite element analysis; Author-Supplied Keyword: Laser shock peening; Author-Supplied Keyword: Residual stress; Author-Supplied Keyword: Thermal relaxation; Author-Supplied Keyword: Ti–6Al–4V; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.surfcoat.2012.05.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76615226&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reukov, V. V. AU - Thompson, G. L. AU - Vertegel, A. A. AU - Jesse, S. AU - Kalinin, S. V. AU - Nikiforov, M. P. T1 - Electromechanical and elastic probing of bacteria in a cell culture medium. JO - Nanotechnology JF - Nanotechnology Y1 - 2012/06/22/ VL - 23 IS - 24 M3 - Article SP - 1 EP - 1 SN - 09574484 AB - Rapid phenotype characterization and identification of cultured cells, which is needed for progress in tissue engineering and drug testing, requires an experimental technique that measures physical properties of cells with sub-micron resolution. Recently, band excitation piezoresponse force microscopy (BEPFM) has been proven useful for recognition and imaging of bacteria of different types in pure water. Here, the BEPFM method is performed for the first time on physiologically relevant electrolyte media, such as Dulbecco’s phosphate-buffered saline (DPBS) and Dulbecco’s modified Eagle’s medium (DMEM). Distinct electromechanical responses for Micrococcus lysodeikticus (Gram-positive) and Pseudomonas fluorescens (Gram-negative) bacteria in DPBS are demonstrated. The results suggest that mechanical properties of the outer surface coating each bacterium, as well as the electrical double layer around them, are responsible for the BEPFM image formation mechanism in electrolyte media. [ABSTRACT FROM AUTHOR] AB - Copyright of Nanotechnology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CELL culture KW - PHENOTYPE KW - PIEZORESPONSE force microscopy KW - MICROCOCCUS luteus KW - PSEUDOMONAS fluorescens N1 - Accession Number: 98022334; Reukov, V. V. 1 Thompson, G. L. 1,2 Vertegel, A. A. 1,3; Email Address: vertege@clemson.edu Jesse, S. 4; Email Address: sergei2@ornl.gov Kalinin, S. V. 4 Nikiforov, M. P. 4; Affiliation: 1: Department of Bioengineering, Clemson University, Clemson, SC 29634, USA 2: Present address: US Air Force Research Laboratory, 4141 Petroleum Road, Fort Sam Houston, TX 78234, USA. 3: Author to whom any correspondence should be addressed. 4: Department of Cell Biology, New York University Medical Center, New York, New York, U.S.A; Source Info: 6/22/2012, Vol. 23 Issue 24, p1; Subject Term: CELL culture; Subject Term: PHENOTYPE; Subject Term: PIEZORESPONSE force microscopy; Subject Term: MICROCOCCUS luteus; Subject Term: PSEUDOMONAS fluorescens; Number of Pages: 1p; Document Type: Article L3 - 10.1088/0957-4484/23/24/245705 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98022334&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucas, M. S. AU - Wilks, G. B. AU - Mauger, L. AU - Muñoz, J. A. AU - Senkov, O. N. AU - Michel, E. AU - Horwath, J. AU - Semiatin, S. L. AU - Stone, M. B. AU - Abernathy, D. L. AU - Karapetrova, E. T1 - Absence of long-range chemical ordering in equimolar FeCoCrNi. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/06/18/ VL - 100 IS - 25 M3 - Article SP - 251907 PB - American Institute of Physics SN - 00036951 AB - Equimolar FeCoCrNi alloys have been the topic of recent research as 'high-entropy alloys,' where the name is derived from the high configurational entropy of mixing for a random solid solution. Despite their name, no systematic study of ordering in this alloy system has been performed to date. Here, we present results from anomalous x-ray scattering and neutron scattering on quenched and annealed samples. An alloy of FeNi3 was prepared in the same manner to act as a control. Evidence of long-range chemical ordering is clearly observed in the annealed FeNi3 sample from both experimental techniques. The FeCoCrNi sample given the same heat treatment lacks long-range chemical order. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALLOYS KW - THERMODYNAMICS KW - METALLIC composites KW - ENTROPY KW - HEATING -- Equipment & supplies N1 - Accession Number: 77330129; Lucas, M. S. 1,2 Wilks, G. B. 1,3 Mauger, L. 4 Muñoz, J. A. 4 Senkov, O. N. 1,3 Michel, E. 1,5 Horwath, J. 1 Semiatin, S. L. 1 Stone, M. B. 6 Abernathy, D. L. 6 Karapetrova, E. 7; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 2: UTC Inc., 1270 North Fairfield Road, Dayton, Ohio 45432, 3: UES, Inc., 4401 Dayton-Xenia Rd., Dayton, Ohio 45432, 4: California Institute of Technology, W. M. Keck Laboratory 138-78, Pasadena, California 91125, 5: Wright State University, Dayton, Ohio 45435, 6: Oak Ridge National Laboratory, 1, Bethel Valley Road, Oak Ridge, Tennessee 37831, 7: Argonne National Laboratory, Argonne, Illinois 60439,; Source Info: 6/18/2012, Vol. 100 Issue 25, p251907; Subject Term: ALLOYS; Subject Term: THERMODYNAMICS; Subject Term: METALLIC composites; Subject Term: ENTROPY; Subject Term: HEATING -- Equipment & supplies; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 333414 Heating Equipment (except Warm Air Furnaces) Manufacturing; NAICS/Industry Codes: 333416 Heating equipment and commercial refrigeration equipment manufacturing; NAICS/Industry Codes: 416120 Plumbing, heating and air-conditioning equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423730 Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers; Number of Pages: 4p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.4730327 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77330129&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Park, Jeongho AU - Mitchel, W. C. AU - Elhamri, Said AU - Back, Tyson C. T1 - Publisher's Note: 'Effect of in-situ oxygen on the electronic properties of graphene grown by carbon molecular beam epitaxy' [Appl. Phys. Lett. 100, 133107 (2012)]. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/06/18/ VL - 100 IS - 25 M3 - Article SP - 259902 PB - American Institute of Physics SN - 00036951 AB - The article presents the publisher's note about the effect of in-situ oxygen on electronic properties of graphene grown by carbon molecular beam epitaxy. KW - MOLECULAR beam epitaxy KW - MOLECULAR beams N1 - Accession Number: 77330022; Park, Jeongho 1 Mitchel, W. C. 1 Elhamri, Said 2 Back, Tyson C. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RXPS), Wright-Patterson AFB, Ohio 45433-7707, 2: Department of Physics, University of Dayton, Dayton, Ohio 45469,; Source Info: 6/18/2012, Vol. 100 Issue 25, p259902; Subject Term: MOLECULAR beam epitaxy; Subject Term: MOLECULAR beams; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.4730980 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77330022&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O. N. AU - Cheng, Y. Q. AU - Miracle, D. B. AU - Barney, E. R. AU - Hannon, A. C. AU - Woodward, C. F. T1 - Atomic structure of Ca40+XMg25Cu35-X metallic glasses. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/06/15/ VL - 111 IS - 12 M3 - Article SP - 123515 PB - American Institute of Physics SN - 00218979 AB - The atomic structures of four Ca40+XMg25Cu35-X (X = 0, 5, 10, and 20 at. %) ternary metallic glasses have been determined using a synergistic combination of neutron diffraction, ab initio molecular dynamics (MD) simulation, and constrained reverse Monte Carlo modeling. It is described as close-packing of efficiently packed Cu-centered clusters that have Ca, Mg, and Cu atoms in the first coordination shell. The close-packed arrangement of the clusters provides a characteristic medium range order in these alloys. An average coordination number (CN) of 10 (with about 5-7 Ca, 2-3 Mg, and 1-2 Cu atoms) is most common for the Cu-centered clusters. The average coordination numbers around Mg and Ca are 12-13 (∼6-8 Ca, 3 Mg, and 1-4 Cu) and 13-15 (7-9 Ca, 3-4 Mg, and 2-5 Cu), respectively, and they are composition dependent. Strong interaction of Cu with Mg and Ca results in pair bond shortening. Icosahedral short range order does not dominate in these amorphous alloys, although polytetrahedral packing and five-fold bond configurations resulting in pentagonal bi-pyramids have been found to be the most common nearest atom configurations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATOMIC structure KW - METALLIC glasses KW - ALLOYS KW - ICOSAHEDRA KW - PYRAMIDS N1 - Accession Number: 77442334; Senkov, O. N. 1 Cheng, Y. Q. 2 Miracle, D. B. 1 Barney, E. R. 3,4 Hannon, A. C. 3 Woodward, C. F. 1; Affiliation: 1: Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, 2: Department of Materials Science and Engineering, John Hopkins University, Baltimore, Maryland 21218, USA; Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, 3: ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, 4: University of Nottingham, Faculty of Engineering, Nottingham NG7 2RD,; Source Info: Jun2012, Vol. 111 Issue 12, p123515; Subject Term: ATOMIC structure; Subject Term: METALLIC glasses; Subject Term: ALLOYS; Subject Term: ICOSAHEDRA; Subject Term: PYRAMIDS; Number of Pages: 19p; Document Type: Article L3 - 10.1063/1.4729450 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77442334&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cimpoiasu, E. AU - Sandu, V. AU - Levin, G. A. AU - Simpson, A. AU - Lashmore, D. T1 - Angular magnetoresistance of stretched carbon nanotube sheets. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/06/15/ VL - 111 IS - 12 M3 - Article SP - 123721 PB - American Institute of Physics SN - 00218979 AB - We studied the anisotropic properties of mechanically stretched bulk carbon nanotube sheets using magnetoresistance (MR) measurements in magnetic fields applied under different orientations with respect to the stretching direction. The stretching direction was either parallel or perpendicular to the direction of the electric current. The magnetic field was rotated either in-the-plane or out-of-the-plane of the sheets. We found that the angular dependence of the MR is a superposition of two terms, one with twofold symmetry and the other one with fourfold symmetry. We also found that the field-dependence of the MR is composed of two terms, one positive and one negative, whose magnitudes are largest when the field is parallel with the stretching direction. If the sheets are treated with nitric acid, the positive term is removed and the MR is smallest when the field is aligned with the magnetic field. We attribute these anisotropic features to magnetoelastic effects induced by the coupling between the magnetic catalyst nanoparticles, the magnetic field, and the network of nanotubes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETORESISTANCE KW - CARBON nanotubes KW - MAGNETIC fields KW - ANISOTROPY KW - MAGNETOSTRICTION N1 - Accession Number: 77442422; Cimpoiasu, E. 1 Sandu, V. 2 Levin, G. A. 3 Simpson, A. 4 Lashmore, D. 4; Affiliation: 1: Department of Physics, United States Naval Academy, Annapolis, Maryland 21402, 2: National Institute of Materials Physics, Bucharest, 3: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 4: Nanocomp Technologies Inc., Concord, New Hampshire 03301,; Source Info: Jun2012, Vol. 111 Issue 12, p123721; Subject Term: MAGNETORESISTANCE; Subject Term: CARBON nanotubes; Subject Term: MAGNETIC fields; Subject Term: ANISOTROPY; Subject Term: MAGNETOSTRICTION; Number of Pages: 10p; Document Type: Article L3 - 10.1063/1.4729538 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77442422&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cortez, Rebecca AU - Slocik, Joseph M. AU - Van Nostrand, Joseph E. AU - Halas, Naomi J. AU - Naik, Rajesh R. T1 - Electrical conductivity of cationized ferritin decorated gold nanoshells. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/06/15/ VL - 111 IS - 12 M3 - Article SP - 124311 PB - American Institute of Physics SN - 00218979 AB - We report on a novel method of controlling the resistance of nanodimensional, gold-coated SiO2 nanoparticles by utilizing biomolecules chemisorbed to the nanoshell surface. Local electronic transport properties of gold-coated nanoshells were measured using scanning conductance microscopy. These results were compared to transport properties of identical gold nanoshells biofunctionalized with cationized ferritin protein both with and without an iron oxide core (apoferritin). Measured resistances were on the order of mega-ohms. White light irradiation effects on transport properties were also explored. The results suggest that the light energy influences the nanoshells' conductivity. A mechanism for assembly of gold nanoshells with cationized ferritin or cationized apoferritin is proposed to explain the resistivity dependence on irradiation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductivity KW - FERRITIN KW - GOLD nanoparticles KW - BIOMOLECULES KW - METALLIC oxides N1 - Accession Number: 77442389; Cortez, Rebecca 1 Slocik, Joseph M. 2 Van Nostrand, Joseph E. 3 Halas, Naomi J. 4 Naik, Rajesh R. 2; Affiliation: 1: Mechanical Engineering Department, Union College, Schenectady, New York 12308, 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, 3: Information Directorate, Air Force Research Laboratory, Rome, New York 13441, 4: Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005,; Source Info: Jun2012, Vol. 111 Issue 12, p124311; Subject Term: ELECTRIC conductivity; Subject Term: FERRITIN; Subject Term: GOLD nanoparticles; Subject Term: BIOMOLECULES; Subject Term: METALLIC oxides; Number of Pages: 5p; Document Type: Article L3 - 10.1063/1.4729800 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77442389&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reshetnyak, V. Yu. AU - Pinkevych, I. P. AU - Cook, G. AU - Evans, D. R. AU - Sluckin, T. J. T1 - Two-Beam Energy Exchange in a Hybrid Photorefractive Inorganic-Cholesteric Cell. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2012/06/15/ VL - 560 IS - 1 M3 - Article SP - 8 EP - 22 SN - 15421406 AB - We develop a theoretical model to describe two-beam energy exchange in a hybrid photorefractive inorganic-cholesteric cell. A cholesteric LC cell is placed between two inorganic photorefractive windows. Weak and strong light beams are incident on the LC cell. The interfering light beams induce a periodic space-charge field in the photorefractive windows. This penetrates into the LC, inducing a diffraction grating written on the LC director. The theory calculates the energy gain of the weak beam, as a result of its interaction with the pump beam within the diffraction grating. In the theory, the flexoelectric mechanism for electric field-director coupling is a more important than the LC static dielectric anisotropy coupling. The flexoelectric polarization in the bulk LC follows from the initial director pretilt at the cell substrates and is the main physical mechanism governing the magnitude of the director grating and the two-beam coupling. The LC optics is described in the Bragg regime. Theoretical results for exponential gain coefficients have been compared with experimental results for hybrid cells filled with cholesteric mixtures TL205/CB15 and BL038/CB15. In order to reconcile theory and experiment, we require that (a) the magnitude of the director grating must be cubic rather than linear in the space-charge field, and (b) near the cell surface, nematic ordering must dominate. Within this paradigm, we are able to fit experimental data to theory for both cholesteric mixtures, subject to the use of some fitting parameters. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOREFRACTIVE materials KW - CELL membranes KW - LIQUID crystals KW - DIFFRACTION gratings KW - ELECTRIC fields KW - OPTICAL polarization KW - SPACE charge N1 - Accession Number: 75253793; Reshetnyak, V. Yu. 1 Pinkevych, I. P. 1 Cook, G. 2,3 Evans, D. R. 2 Sluckin, T. J. 4; Email Address: T.J.Sluckin@soton.ac.uk; Affiliation: 1: Physics Faculty, National Taras Shevchenko University of Kyiv, Volodymyrs’ka Street 64, Kyiv, 01601, Ukraine 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio, 45433, USA 3: Universal Technology Corporation, 1270 N. Fairfield Road, Dayton, Ohio, 45432, USA 4: School of Mathematics, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom; Source Info: 2012, Vol. 560 Issue 1, p8; Subject Term: PHOTOREFRACTIVE materials; Subject Term: CELL membranes; Subject Term: LIQUID crystals; Subject Term: DIFFRACTION gratings; Subject Term: ELECTRIC fields; Subject Term: OPTICAL polarization; Subject Term: SPACE charge; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; Number of Pages: 15p; Document Type: Article L3 - 10.1080/15421406.2012.661950 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75253793&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yannian Li AU - Urbas, Augustine AU - Quan Li T1 - Reversible Light-Directed Red, Green, and Blue Reflection with Thermal Stability Enabled by a Self-Organized Helical Superstructure. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2012/06/13/ VL - 134 IS - 23 M3 - Article SP - 9573 EP - 9576 SN - 00027863 AB - Adding external, remote, and dynamic control to self-organized superstructures with desired properties is an important leap necessary in leveraging the fascinating molecular subsystems for employment in applications. Here two novel light-driven dithienylethene chiral molecular switches possessing remarkable changes in helical twisting power during photoisomerization as well as very high helical twisting powers were found to experience photochemically reversible isomerization with thermal stability in both isotropic organic solvents and anisotropic liquid crystal media. When doped into a commercially available achiral liquid crystal host, the chiral switch was able to either immediately induce an optically tunable helical superstructure or retain an achiral photoresponsive liquid crystal phase whose helical superstructure was induced and tuned reversibly upon light irradiation. Moreover, reversible light-directed red, green, and blue reflection colors with thermal stability in a single thin film were demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR self-assembly KW - MOLECULAR switches KW - ALKENES KW - PHOTOISOMERIZATION KW - PHOTOREACTIVE organic thin films N1 - Accession Number: 77218814; Yannian Li 1 Urbas, Augustine 2 Quan Li 1; Email Address: qlil@kent.edu; Affiliation: 1: Liquid Crystal Institute, Kent State University, Kent, Ohio 44242, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory WPAFB, Ohio 45433, United States; Source Info: 6/13/2012, Vol. 134 Issue 23, p9573; Subject Term: MOLECULAR self-assembly; Subject Term: MOLECULAR switches; Subject Term: ALKENES; Subject Term: PHOTOISOMERIZATION; Subject Term: PHOTOREACTIVE organic thin films; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1021/ja302772z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77218814&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Turner, David AU - Fratini, Albert AU - Turro, Claudia AU - Check, Michael AU - Hunter, Chad T1 - 2-(Pyridin-2-yl)-1,3-oxathiane. JO - Acta Crystallographica: Section E (International Union of Crystallography - IUCr) JF - Acta Crystallographica: Section E (International Union of Crystallography - IUCr) Y1 - 2012/06// VL - 68 IS - 6 M3 - Article SP - o1675 EP - o1675 SN - 16005368 AB - The article discusses a study on the crystal structure of 2-(Pyridin-2-yl)-1,3-oxathiane. Details about the crystal data, data collection, and refinement of factors and hydrogen atom parameters are mentioned. Also provided is information on related literature, particularly the corresponding organic compound 2-(2-pyridyl)-1,3-oxathiane. KW - CRYSTAL structure KW - RESEARCH KW - PYRIDINE KW - HETEROCYCLIC compounds KW - HYDROGEN atom KW - HYDROGEN bonding KW - INTERMOLECULAR interactions KW - PYRIDYL compounds N1 - Accession Number: 99902890; Turner, David 1,2; Email Address: david.turner.ctr@wpafb.af.mil Fratini, Albert 3 Turro, Claudia 4 Check, Michael 1,2 Hunter, Chad 1; Affiliation: 1: Thermal Sciences and Materials Branch, Material and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 2: Universal Technology Corporation, 1270 N. Fairfield Road, Beavercreek, OH 45432, USA 3: Chemistry Department, University of Dayton, 300 College Park, Dayton, OH 45469-2357, USA 4: Chemistry Department, The Ohio State University, 154 W. 12th Avenue, Columbus, OH 43210, USA; Source Info: Jun2012, Vol. 68 Issue 6, po1675; Subject Term: CRYSTAL structure; Subject Term: RESEARCH; Subject Term: PYRIDINE; Subject Term: HETEROCYCLIC compounds; Subject Term: HYDROGEN atom; Subject Term: HYDROGEN bonding; Subject Term: INTERMOLECULAR interactions; Subject Term: PYRIDYL compounds; Number of Pages: 7p; Document Type: Article L3 - 10.1107/S1600536812018661 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=99902890&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Jack W. T1 - THE ANCHORAGE, ALASKA VETERANS COURT AND RECIDIVISM: JULY 6, 2004 -- DECEMBER 31, 2010. JO - Alaska Law Review JF - Alaska Law Review Y1 - 2012/06// VL - 29 IS - 1 M3 - Article SP - 93 EP - 111 SN - 08830568 AB - In July 2004 Anchorage, Alaska started one of the first veterans courts in the United States. That court has now been in continuous operation for over seven years. This Comment briefly describes the steps taken to establish the Alaska Veterans Court and how the court operates. An overview of the characteristics of participants in and graduates from the court is provided, followed by statistics concerning the effect of the court on recidivism. Several potential future areas of study concerning this court are also identified. The Comment concludes by highlighting the importance of the court and by noting that the benefits provided by the court are currently limited by the absence of funding from any source. [ABSTRACT FROM AUTHOR] AB - Copyright of Alaska Law Review is the property of Duke University, School of Law and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RECIDIVISM KW - STATE courts KW - ADMINISTRATIVE law KW - FINANCE KW - ANCHORAGE (Alaska) KW - ALASKA KW - UNITED States N1 - Accession Number: 78113665; Smith, Jack W. 1,2,3,4; Affiliation: 1: United States Air Force Academy 2: University of Southern California 3: University of Idaho 4: Master of Judicial Studies, University of Nevada, Reno; Source Info: Jun2012, Vol. 29 Issue 1, p93; Subject Term: RECIDIVISM; Subject Term: STATE courts; Subject Term: ADMINISTRATIVE law; Subject Term: FINANCE; Subject Term: ANCHORAGE (Alaska); Subject Term: ALASKA; Subject Term: UNITED States; Number of Pages: 19p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78113665&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Perlovsky, Leonid T1 - Emotions of “higher” cognition. JO - Behavioral & Brain Sciences JF - Behavioral & Brain Sciences Y1 - 2012/06// VL - 35 IS - 3 M3 - Article SP - 157 EP - 158 SN - 0140525X AB - The target article by Lindquist et al. considers discrete emotions. This commentary argues that these are but a minor part of human emotional abilities, unifying us with animals. Uniquely human emotions are aesthetic emotions related to the need for the knowledge of “high” cognition, including emotions of the beautiful, cognitive dissonances, and musical emotions. This commentary touches on their cognitive functions and origins. [ABSTRACT FROM AUTHOR] AB - Copyright of Behavioral & Brain Sciences is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BRAIN function localization KW - EMOTIONS (Psychology) KW - COGNITION KW - MUSIC & emotions KW - AESTHETICS -- Psychological aspects KW - EMOTIONS (Psychology) & cognition KW - COGNITIVE analysis N1 - Accession Number: 75618199; Perlovsky, Leonid 1; Affiliation: 1: Harvard University, Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, MA 02129; and the Air Force Research Laboratory WPAFB, OH 45433. leonid@seas.harvard.edu http://leonid-perlovsky.com/; Source Info: Jun2012, Vol. 35 Issue 3, p157; Subject Term: BRAIN function localization; Subject Term: EMOTIONS (Psychology); Subject Term: COGNITION; Subject Term: MUSIC & emotions; Subject Term: AESTHETICS -- Psychological aspects; Subject Term: EMOTIONS (Psychology) & cognition; Subject Term: COGNITIVE analysis; Number of Pages: 2p; Document Type: Article L3 - 10.1017/S0140525X11001555 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75618199&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Amama, Placidus B. AU - Pint, Cary L. AU - Mirri, Francesca AU - Pasquali, Matteo AU - Hauge, Robert H. AU - Maruyama, Benji T1 - Catalyst–support interactions and their influence in water-assisted carbon nanotube carpet growth JO - Carbon JF - Carbon Y1 - 2012/06// VL - 50 IS - 7 M3 - Article SP - 2396 EP - 2406 SN - 00086223 AB - Abstract: We report results from characterization studies focused on a diverse selection of catalyst support materials in order to understand what makes a good catalyst support during carbon nanotube (CNT) carpet growth via water-assisted chemical vapor deposition. The growth and catalyst morphological changes occurring for thin Fe layers deposited on Al2O3, MgO, TiN, and ZrO2 are compared. The growth behaviors of the catalyst substrates were evidently different, with Al2O3/Fe supporting CNT carpet growth and showing the highest activity and longest lifetime. The TiN/Fe catalyst also supported CNT carpet growth, albeit with much lower activity, shorter lifetime, and lower CNT quality while MgO/Fe and ZrO2/Fe did not support CNT carpet growth under standard growth conditions. Studies using a combination of atomic force microscopy and X-ray photoelectron spectroscopy revealed a general correlation between the catalyst behavior (activity and lifetime) and the 3D evolution of the catalyst for active catalysts (Al2O3/Fe and TiN/Fe). Analysis of inactive catalysts under standard conditions (MgO/Fe and ZrO2/Fe) raise interesting questions related to additional chemical interactions between the substrate and catalyst that could influence nucleation and CNT growth. This work provides a step toward understanding the challenges that arise in engineering efficient CNT growth processes on a desired substrate. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CATALYST supports KW - CARBON nanotubes KW - CRYSTAL growth KW - CHEMICAL vapor deposition KW - X-ray photoelectron spectroscopy KW - TITANIUM nitride KW - IRON catalysts KW - WATER KW - ALUMINUM oxide N1 - Accession Number: 73760869; Amama, Placidus B. 1,2; Email Address: Placidus.Amama@wpafb.af.mil Pint, Cary L. 3 Mirri, Francesca 3 Pasquali, Matteo 3 Hauge, Robert H. 3 Maruyama, Benji 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, United States 2: University of Dayton Research Institute (UDRI), University of Dayton, Dayton, OH 45469, United States 3: Departments of Chemical & Biomolecular Engineering and Chemistry, Richard E. Smalley Institute for Nanoscale Science and Technology, Rice University, Houston, TX 77251, United States; Source Info: Jun2012, Vol. 50 Issue 7, p2396; Subject Term: CATALYST supports; Subject Term: CARBON nanotubes; Subject Term: CRYSTAL growth; Subject Term: CHEMICAL vapor deposition; Subject Term: X-ray photoelectron spectroscopy; Subject Term: TITANIUM nitride; Subject Term: IRON catalysts; Subject Term: WATER; Subject Term: ALUMINUM oxide; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.carbon.2012.01.045 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73760869&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gons, Eric AU - Schroden, Jonathan AU - McAlinden, Ryan AU - Gaul, Marcus AU - Van Poppel, Bret T1 - Challenges of measuring progress in Afghanistan using violence trends: the effects of aggregation, military operations, seasonality, weather, and other causal factors. JO - Defense & Security Analysis JF - Defense & Security Analysis Y1 - 2012/06// VL - 28 IS - 2 M3 - Article SP - 100 EP - 113 SN - 14751798 AB - Measuring nationwide progress of counterinsurgency operations in Afghanistan using violence trends is difficult due to several factors: aggregation of data to the national level may obfuscate disparate local trends; the observed seasonality in violence makes comparisons difficult and may obscure progress; and short-term spikes or troughs – attributable to weather, military operations and tempo, or holiday periods – heavily influence simple averaging schemes. Despite these challenges, proper understanding of violence statistics is critical to estimating the effectiveness of military forces added during a surge or redeployed as part of transition. This article explores methods for analyzing observed violence trends to identify causal factors, to provide a comparable baseline, and to inform assessments at appropriate levels of aggregation. One methodology for seasonal adjustment of violence data is discussed and shown to provide a logical baseline for examining trends. An ordinary least squares regression model is developed and implemented using time-series violence data. [ABSTRACT FROM AUTHOR] AB - Copyright of Defense & Security Analysis is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COUNTERINSURGENCY KW - MILITARY art & science KW - VIOLENCE KW - WEATHER KW - LEAST squares KW - TIME series analysis KW - TREND analysis KW - AFGHANISTAN KW - Afghanistan KW - campaign assessment KW - counterinsurgency KW - metrics KW - seasonality KW - trend analysis N1 - Accession Number: 75162423; Gons, Eric 1; Email Address: eric.gons@langley.af.mil Schroden, Jonathan 2 McAlinden, Ryan 3 Gaul, Marcus 4 Van Poppel, Bret 5; Affiliation: 1: Headquarters Air Combat Command, 204 Dodd Boulevard, Suite 304, Langley AFB, VA, 23665, USA 2: Center for Naval Analyses, 4825 Mark Center Drive, Alexandria, VA, 22311, USA 3: NATO C3 Agency, Oude Waalsdorperweg 61, 2597, AK, The Hague, The Netherlands 4: Afghan Assessment Group, Headquarters International Security Assistance Force, Kabul, Afghanistan 5: Department of Civil and Mechanical Engineering, US Military Academy, West Point, NY, 10996, USA; Source Info: Jun2012, Vol. 28 Issue 2, p100; Subject Term: COUNTERINSURGENCY; Subject Term: MILITARY art & science; Subject Term: VIOLENCE; Subject Term: WEATHER; Subject Term: LEAST squares; Subject Term: TIME series analysis; Subject Term: TREND analysis; Subject Term: AFGHANISTAN; Author-Supplied Keyword: Afghanistan; Author-Supplied Keyword: campaign assessment; Author-Supplied Keyword: counterinsurgency; Author-Supplied Keyword: metrics; Author-Supplied Keyword: seasonality; Author-Supplied Keyword: trend analysis; Number of Pages: 14p; Document Type: Article L3 - 10.1080/14751798.2012.678164 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75162423&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aihara, Kunia AU - Chen, Morgan Jikang AU - Chen, Cheng AU - Pham, Anh-Vu H. T1 - Reliability of Liquid Crystal Polymer Air Cavity Packaging. JO - IEEE Transactions on Components, Packaging & Manufacturing Technology JF - IEEE Transactions on Components, Packaging & Manufacturing Technology Y1 - 2012/06// VL - 2 IS - 2 M3 - Article SP - 224 EP - 230 SN - 21563950 AB - We present the development of liquid crystal polymer (LCP) packages and thermal compression sealing processes. We demonstrate the complete process for prototyping, sealing, and assembling a single-chip LCP package at microwave frequencies. Using the thermal compression technique, we achieve a measured fine leak rate of 3.7\,\times 10^-8~cc\-atm/s of a LCP package cavity. We have conducted a series of environmental tests such as temperature cycling and 85^\circC and 85% humidity. We demonstrated that LCP packages have passed major environmental tests and proved to be a reliable package platform. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Components, Packaging & Manufacturing Technology is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMER liquid crystals KW - RELIABILITY (Engineering) KW - SEALING (Technology) KW - PROTOTYPES KW - MICROWAVES KW - HUMIDITY KW - TEMPERATURE measurements KW - MOISTURE KW - HELIUM KW - Cavities KW - Cavity resonators KW - Helium KW - Humidity KW - liquid crystal polymer KW - Moisture KW - organic KW - packaging KW - Reliability KW - Temperature measurement KW - Testing N1 - Accession Number: 71538508; Aihara, Kunia 1 Chen, Morgan Jikang 2 Chen, Cheng 3 Pham, Anh-Vu H. 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA 2: Futurewei Technologies, Research and Development US Subsidiary of Huawei Technologies, Santa Clara, CA, USA 3: Electrical and Computer Engineering Department, Microwave Microsystems Laboratory, University of California, Davis, CA, USA; Source Info: Jun2012, Vol. 2 Issue 2, p224; Subject Term: POLYMER liquid crystals; Subject Term: RELIABILITY (Engineering); Subject Term: SEALING (Technology); Subject Term: PROTOTYPES; Subject Term: MICROWAVES; Subject Term: HUMIDITY; Subject Term: TEMPERATURE measurements; Subject Term: MOISTURE; Subject Term: HELIUM; Author-Supplied Keyword: Cavities; Author-Supplied Keyword: Cavity resonators; Author-Supplied Keyword: Helium; Author-Supplied Keyword: Humidity; Author-Supplied Keyword: liquid crystal polymer; Author-Supplied Keyword: Moisture; Author-Supplied Keyword: organic; Author-Supplied Keyword: packaging; Author-Supplied Keyword: Reliability; Author-Supplied Keyword: Temperature measurement; Author-Supplied Keyword: Testing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TCPMT.2011.2178092 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71538508&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shiffler, Don AU - Cauffman, Stephen R. AU - Cross, Adrian W. T1 - Guest Editorial The Fourteenth Special Issue on High-Power Microwave Generation. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2012/06//6/1/2012 Part 1 Part 1 VL - 40 IS - 6 M3 - Article SP - 1493 EP - 1494 SN - 00933813 AB - An introduction is presented in which the editor discusses various reports within the issue on topics including gyrotrons, free-electron lasers, and magnetrons. KW - FREE electron lasers KW - MAGNETRONS KW - GYROTRONS N1 - Accession Number: 76491804; Shiffler, Don 1 Cauffman, Stephen R. 2 Cross, Adrian W. 3; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, NM, USA 2: Microwave Power Products Division, Communications and Power Industries, Palo Alto, CA, USA 3: Department of Physics, SUPA, University of Strathclyde, Glasgow, U.K.; Source Info: 6/1/2012 Part 1 Part 1, Vol. 40 Issue 6, p1493; Subject Term: FREE electron lasers; Subject Term: MAGNETRONS; Subject Term: GYROTRONS; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2012.2197157 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76491804&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Estep, Nicholas A. AU - Petrosky, James C. AU - McClory, John W. AU - Kim, Y. AU - Terzuoli, Andrew J. T1 - Electromagnetic Interference and Ionizing Radiation Effects on CMOS Devices. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2012/06//6/1/2012 Part 1 Part 1 VL - 40 IS - 6 M3 - Article SP - 1495 EP - 1501 SN - 00933813 AB - Integrated circuits are inherently complicated and made more by increasing transistor quantity and density. This trend potentially enhances concomitant effects of high-energy ionizing radiation and local or impressed electromagnetic interference (EMI). The reduced margin for signal error may counter any gain in radiation hardness from smaller device dimensions. Isolated EMI and ionizing radiation studies on circuits have been extensively conducted over the past 30 years. However, little focus has been placed on the combined effects. To investigate the effect of combined EMI and ionizing radiation, two complementary metal–oxide–semiconductor inverter technologies (CD4069 and SN74AUC1G04) were analyzed for their static performance in response to both EMI and gamma radiation up to 132 krd(Si). The combined EMI and gamma radiation environment, compared to the isolated effects of each, produced the most severe degradation in inverter performance for both device technologies. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC interference KW - COMPLEMENTARY metal oxide semiconductors KW - IONIZING radiation KW - TRANSISTORS -- Performance KW - ELECTRIC inverters KW - GAMMA rays -- Measurement KW - CMOS KW - CMOS integrated circuits KW - electromagnetic compatibility KW - electromagnetic coupling KW - Electromagnetic interference KW - gamma irradiation effects KW - Inverters KW - Ionizing radiation KW - Leakage current KW - MOSFETs N1 - Accession Number: 76491803; Estep, Nicholas A. 1 Petrosky, James C. 2 McClory, John W. 3 Kim, Y. 4 Terzuoli, Andrew J. 4; Affiliation: 1: High Power Microwave Division, Directed Energy Directorate, U.S. Air Force Research Laboratory, Kirtland AFB, NM, USA 2: Department of Engineering Physics, U.S. Air Force Institute of Technology, Wright-Patterson Air Force Base, OH, USA 3: U.S. Air Force Institute of Technology, Wright-Patterson Air Force Base, OH, USA 4: Department of Electrical Engineering, U.S. Air Force Institute of Technology, Wright-Patterson Air Force Base, OH, USA; Source Info: 6/1/2012 Part 1 Part 1, Vol. 40 Issue 6, p1495; Subject Term: ELECTROMAGNETIC interference; Subject Term: COMPLEMENTARY metal oxide semiconductors; Subject Term: IONIZING radiation; Subject Term: TRANSISTORS -- Performance; Subject Term: ELECTRIC inverters; Subject Term: GAMMA rays -- Measurement; Author-Supplied Keyword: CMOS; Author-Supplied Keyword: CMOS integrated circuits; Author-Supplied Keyword: electromagnetic compatibility; Author-Supplied Keyword: electromagnetic coupling; Author-Supplied Keyword: Electromagnetic interference; Author-Supplied Keyword: gamma irradiation effects; Author-Supplied Keyword: Inverters; Author-Supplied Keyword: Ionizing radiation; Author-Supplied Keyword: Leakage current; Author-Supplied Keyword: MOSFETs; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TPS.2012.2193600 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76491803&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Andreev, Andrey D. AU - Hendricks, Kyle J. T1 - ICEPIC Simulation of a Strapped Nonrelativistic High-Power CW UHF Magnetron With a Solid Cathode Operating in the Space-Charge Limited Regime. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2012/06//6/1/2012 Part 1 Part 1 VL - 40 IS - 6 M3 - Article SP - 1551 EP - 1562 SN - 00933813 AB - This paper presents the results of particle-in-cell (PIC) simulations of a strapped nonrelativistic ultrahigh-frequency (890–915 MHz) magnetron whose geometrical and operational parameters are close to the parameters of the high-power industrial heating magnetron producing 75–100 kW of continuous-wave microwave power. Simulations of the magnetron operation are performed without artificial RF priming, but rather in natural conditions, when magnetron oscillations start to grow from electromagnetic “noise.” This approach reveals many important details of the “preoscillating” phase of the magnetron operation. It is found, for example, that the start-up time of the magnetron with a solid cathode, operating in the explosive electron emission mode, is determined by the time needed for the electron cloud formed near the cathode to reach the anode, where the fringing dc electric fields of the periodic anode structure begin to perturb the electron cloud and to facilitate the magnetron oscillations to start to grow. The PIC simulations are performed at one magnetic field (0.238 T) and a range of applied voltages, allowing the magnetron to operate in the \pi mode characterized by five magnetron spokes and TE51-like mode of the induced electromagnetic field distribution within the resonant system of the ten-cavity magnetron. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - NONRELATIVISTIC quantum mechanics KW - SHORTWAVE radio KW - CONTINUOUS wave radar KW - INDUSTRIAL heating KW - ELECTROMAGNETISM KW - Anodes KW - Cathodes KW - Computer simulations KW - Electromagnetic heating KW - high power microwave generation KW - Magnetic resonance KW - magnetrons KW - Microwave oscillators KW - Steady-state KW - virtual prototyping N1 - Accession Number: 76491788; Andreev, Andrey D. 1 Hendricks, Kyle J. 2; Affiliation: 1: Raytheon Missile Systems, Advanced Security and Directed Energy Systems, Directed Energy Division, Raytheon Ktech, Albuquerque, NM, USA 2: High-Power Microwave Division, Directed Energy Directorate, Air Force Research Laboratory, Albuquerque, USA; Source Info: 6/1/2012 Part 1 Part 1, Vol. 40 Issue 6, p1551; Subject Term: MAGNETRONS; Subject Term: NONRELATIVISTIC quantum mechanics; Subject Term: SHORTWAVE radio; Subject Term: CONTINUOUS wave radar; Subject Term: INDUSTRIAL heating; Subject Term: ELECTROMAGNETISM; Author-Supplied Keyword: Anodes; Author-Supplied Keyword: Cathodes; Author-Supplied Keyword: Computer simulations; Author-Supplied Keyword: Electromagnetic heating; Author-Supplied Keyword: high power microwave generation; Author-Supplied Keyword: Magnetic resonance; Author-Supplied Keyword: magnetrons; Author-Supplied Keyword: Microwave oscillators; Author-Supplied Keyword: Steady-state; Author-Supplied Keyword: virtual prototyping; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TPS.2011.2177997 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76491788&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fleming, Timothy P. AU - Lambrecht, Michael AU - Mardahl, Peter T1 - Design and Simulation of a Mega-Watt Class Nonrelativistic Magnetron. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2012/06//6/1/2012 Part 1 Part 1 VL - 40 IS - 6 M3 - Article SP - 1563 EP - 1568 SN - 00933813 AB - Numerical simulations of a prototype conventional magnetron capable of an RF output power exceeding 1.0 MW are presented. Magnetron design evaluation is carried out via numerical simulation using the 3-D Improved Concurrent Electromagnetic Particle-in-Cell code. The magnetron was capable of oscillating in the \pi mode with little mode competition at 655 MHz over a range of magnetic fields extending from B = 0.186 to B = 0.261 \ \T and voltages ranging from 40 to 64 kV. RF Output power ranged from 400 kW to 2.1 MW over these voltages with efficiencies typically at 60%. RF power propagation upstream was identified as a major source of loss in the design. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONRELATIVISTIC quantum mechanics KW - MAGNETRONS KW - ELECTROMAGNETISM KW - CONCURRENT engineering KW - COMPUTER simulation KW - MAGNETIC fields KW - Cathodes KW - Conventional magnetron KW - high-power microwave KW - Magnetic resonance KW - Magnetic resonance imaging KW - Magnetic separation KW - mode competition KW - Power generation KW - Radio frequency KW - Saturation magnetization N1 - Accession Number: 76491790; Fleming, Timothy P. 1 Lambrecht, Michael 1 Mardahl, Peter 1; Affiliation: 1: Air Force Research Laboratory, Albuquerque, NM, USA; Source Info: 6/1/2012 Part 1 Part 1, Vol. 40 Issue 6, p1563; Subject Term: NONRELATIVISTIC quantum mechanics; Subject Term: MAGNETRONS; Subject Term: ELECTROMAGNETISM; Subject Term: CONCURRENT engineering; Subject Term: COMPUTER simulation; Subject Term: MAGNETIC fields; Author-Supplied Keyword: Cathodes; Author-Supplied Keyword: Conventional magnetron; Author-Supplied Keyword: high-power microwave; Author-Supplied Keyword: Magnetic resonance; Author-Supplied Keyword: Magnetic resonance imaging; Author-Supplied Keyword: Magnetic separation; Author-Supplied Keyword: mode competition; Author-Supplied Keyword: Power generation; Author-Supplied Keyword: Radio frequency; Author-Supplied Keyword: Saturation magnetization; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TPS.2012.2187288 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76491790&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanciulescu, Ilinca AU - Mitchell, Toby AU - Chandra, Yenny AU - Eason, Thomas AU - Spottswood, Michael T1 - A lower bound on snap-through instability of curved beams under thermomechanical loads JO - International Journal of Non-Linear Mechanics JF - International Journal of Non-Linear Mechanics Y1 - 2012/06// VL - 47 IS - 5 M3 - Article SP - 561 EP - 575 SN - 00207462 AB - Abstract: A non-linear finite element formulation (three dimensional continuum elements) is implemented and used for modeling dynamic snap-through in beams with initial curvature. We identify a non-trivial (non-flat) configuration of the beam at a critical temperature value below which the beam will no longer experience snap-through under any magnitude of applied quasi-static load for beams with various curvatures. The critical temperature is shown to successfully eliminate snap-through in dynamic simulations at quasistatic loading rates. Thermomechanical coupling is included in order to model a physically minimal amount of damping in the system, and the resulting post-snap vibrations are shown to be thermoelastically damped. We propose a test to determine the critical snap-free temperature for members of general geometry and loading pattern; the analogy between mechanical prestress and thermal strain that holds between the static and dynamic simulations is used to suggest a simple method for reducing the vulnerability of thin-walled structural members to dynamic snap-through in members of large initial curvature via the introduction of initial pretension. [Copyright &y& Elsevier] AB - Copyright of International Journal of Non-Linear Mechanics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA instabilities KW - LOADS (Mechanics) KW - FINITE element method KW - NONLINEAR theories KW - CONTINUUM mechanics KW - TEMPERATURE effect KW - THERMOELASTICITY KW - Curved beam KW - Finite element KW - Snap-through KW - Solid (continuum) elements KW - Thermomechanical loads N1 - Accession Number: 75355318; Stanciulescu, Ilinca 1; Email Address: ilinca@rice.edu Mitchell, Toby 2 Chandra, Yenny 1 Eason, Thomas 3 Spottswood, Michael 3; Affiliation: 1: Rice University, Department of Civil and Environmental Engineering, 6100 Main Street, Houston, TX 77005, USA 2: University of California at Berkeley, Department of Civil Engineering, Berkeley, CA 94720, USA 3: Air Force Research Laboratory, Structural Sciences Center, 2790 D. Street, WPAFB, OH, USA; Source Info: Jun2012, Vol. 47 Issue 5, p561; Subject Term: PLASMA instabilities; Subject Term: LOADS (Mechanics); Subject Term: FINITE element method; Subject Term: NONLINEAR theories; Subject Term: CONTINUUM mechanics; Subject Term: TEMPERATURE effect; Subject Term: THERMOELASTICITY; Author-Supplied Keyword: Curved beam; Author-Supplied Keyword: Finite element; Author-Supplied Keyword: Snap-through; Author-Supplied Keyword: Solid (continuum) elements; Author-Supplied Keyword: Thermomechanical loads; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.ijnonlinmec.2011.10.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75355318&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Panasyuk, George Y. AU - Tsyganov, Alexander B. T1 - Theory of collisional electron spectroscopy for gas analysis. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/06// VL - 111 IS - 11 M3 - Article SP - 114503 EP - 114503-8 PB - American Institute of Physics SN - 00218979 AB - We develop an analytical model for a proposed method of gas analysis. The method is based on collisional electron spectroscopy, where a limited number of electron scatterings on gas molecules inside the analyzer is permitted. The proposed method can be used to identify impurity species in a main gas from the resulted energy spectra of photoelectrons collected by the cathode. The photoelectrons are produced by vacuum ultraviolet-ionization of impurity species. Physical processes are explored in the case of detecting impurities in atmospheric air. The electron velocity distribution function inside the detector is derived. It is shown that the voltage dependence of the second derivative of the cathode current with respect to the applied cathode voltage can provide electron energy spectrum and subsequent identification of the impurity species. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON spectroscopy KW - ELECTRON emission KW - X-rays KW - PHOTOELECTRONS KW - PHOTOEMISSION N1 - Accession Number: 76605809; Panasyuk, George Y. 1 Tsyganov, Alexander B. 2; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, 2: Department of General and Technical Physics, St.-Petersburg State Mining University, St.-Petersburg,; Source Info: Jun2012, Vol. 111 Issue 11, p114503; Subject Term: ELECTRON spectroscopy; Subject Term: ELECTRON emission; Subject Term: X-rays; Subject Term: PHOTOELECTRONS; Subject Term: PHOTOEMISSION; Number of Pages: 1p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.4723640 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76605809&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chan, Kwai S. AU - Enright, Michael P. AU - Golden, Patrick J. AU - Naboulsi, Samir AU - Chandra, Ramesh AU - Pentz, Alan C. T1 - Probabilistic High-Cycle Fretting Fatigue Assessment of Gas Turbine Engine Components. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2012/06// VL - 134 IS - 6 M3 - Article SP - 1 EP - 8 SN - 07424795 AB - High-cycle fatigue (HCF) is arguably one of the costliest sources of in-service damage in military aircraft engines. HCF of turbine blades and disks can pose a significant engine risk because fatigue failure can result from resonant vibratory stresses sustained over a relatively short time. A common approach to mitigate HCF risk is to avoid dangerous resonant vibration modes (first bending and torsion modes, etc.) and instabilities (flutter and rotating stall) in the operating range. However, it might be impossible to avoid all the resonance for all flight conditions. In this paper, a methodology is presented to assess the influences of HCF loading on the fracture risk of gas turbine engine components subjected to fretting fatigue. The methodology is based on an integration of a global finite element analysis of the disk-blade assembly, numerical solution of the singular integral equations using the CAPRI (Contact Analysis for Profiles of Random Indenters) and Worst Case Fret methods, and risk assessment using the DARWIN (Design Assessment of Reliability with Inspection) probabilistic fracture mechanics code. The methodology is illustrated for an actual military engine disk under real life loading conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRETTING corrosion KW - RESEARCH KW - CORROSION & anti-corrosives KW - GAS turbines KW - DUCTED fans KW - MILITARY airplanes N1 - Accession Number: 95709864; Chan, Kwai S. 1 Enright, Michael P. 1 Golden, Patrick J. 2 Naboulsi, Samir 3 Chandra, Ramesh 4 Pentz, Alan C. 4; Affiliation: 1: Southwest Research Institute,® San Antonio, TX 78238 2: Air Force Research Laboratory, Wright-Patterson AFB, OH, 45433 3: High Performance Technologies, Inc., Wright-Palterson AFB, OH, 45433 4: NAVAIR Patuxent River, MD, 20670; Source Info: Jun2012, Vol. 134 Issue 6, p1; Subject Term: FRETTING corrosion; Subject Term: RESEARCH; Subject Term: CORROSION & anti-corrosives; Subject Term: GAS turbines; Subject Term: DUCTED fans; Subject Term: MILITARY airplanes; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1115/1.4005975 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=95709864&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fellner, Angela N. AU - Matthews, Gerald AU - Shockley, Kevin D. AU - Warm, Joel S. AU - Zeidner, Moshe AU - Karlov, Lisa AU - Roberts, Richard D. T1 - Using emotional cues in a discrimination learning task: Effects of trait emotional intelligence and affective state JO - Journal of Research in Personality JF - Journal of Research in Personality Y1 - 2012/06// VL - 46 IS - 3 M3 - Article SP - 239 EP - 247 SN - 00926566 AB - Abstract: Individuals may differ in their ability to learn the significance of emotional cues within a specific context. If so, trait emotional intelligence (EI) may be associated with faster cue learning. This study (N =180) tested whether trait EI predicts faster learning of a critical cue for discriminating “terrorists” from “non-terrorists”, using virtual-reality heads as stimuli. The critical cue was either facial emotion (positive or negative), or a neutral feature (hat size). Cognitive ability and subjective state were also assessed. Participants were faster to learn with an emotive cue. Surprisingly, high trait EI was correlated with poorer performance, especially early in learning. Subjective distress was also associated with impaired learning to emotive cues. [Copyright &y& Elsevier] AB - Copyright of Journal of Research in Personality is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERSONALITY & emotions KW - DISCRIMINATION learning KW - EMOTIONAL intelligence KW - LEARNING KW - TERRORISTS KW - FACIAL expression KW - COGNITIVE ability KW - PERFORMANCE evaluation KW - Cognitive ability KW - Discrimination learning KW - Implicit processes KW - Stress KW - Trait emotional intelligence N1 - Accession Number: 74985374; Fellner, Angela N. 1 Matthews, Gerald 1; Email Address: gerald.matthews@uc.edu Shockley, Kevin D. 1 Warm, Joel S. 2 Zeidner, Moshe 3 Karlov, Lisa 4 Roberts, Richard D. 5; Affiliation: 1: Department of Psychology, University of Cincinnati, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, USA 3: Laboratory for Research in Personality, Emotions, and Individual Differences, University of Haifa, Israel 4: School of Psychology, University of Sydney, Australia 5: Educational Testing Service (ETS), Philadelphia, USA; Source Info: Jun2012, Vol. 46 Issue 3, p239; Subject Term: PERSONALITY & emotions; Subject Term: DISCRIMINATION learning; Subject Term: EMOTIONAL intelligence; Subject Term: LEARNING; Subject Term: TERRORISTS; Subject Term: FACIAL expression; Subject Term: COGNITIVE ability; Subject Term: PERFORMANCE evaluation; Author-Supplied Keyword: Cognitive ability; Author-Supplied Keyword: Discrimination learning; Author-Supplied Keyword: Implicit processes; Author-Supplied Keyword: Stress; Author-Supplied Keyword: Trait emotional intelligence; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jrp.2012.01.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74985374&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heidler, Jeanne T. T1 - Democracy's Lawyer: Felix Grundy of the Old Southwest. JO - Journal of the Early Republic JF - Journal of the Early Republic Y1 - 2012///Summer2012 VL - 32 IS - 2 M3 - Book Review SP - 299 EP - 301 PB - University of Pennsylvania Press SN - 02751275 AB - The article reviews the book "Democracy's Lawyer: Felix Grundy of the Old Southwest," by J. Roderick Heller, III. KW - NONFICTION KW - HELLER, J. Roderick KW - GRUNDY, Felix KW - DEMOCRACY'S Lawyer: Felix Grundy of the Old Southwest (Book) N1 - Accession Number: 74455968; Heidler, Jeanne T. 1; Affiliation: 1: Professor of history at the United States Air Force Academy; Source Info: Summer2012, Vol. 32 Issue 2, p299; Subject Term: NONFICTION; Reviews & Products: DEMOCRACY'S Lawyer: Felix Grundy of the Old Southwest (Book); People: HELLER, J. Roderick; People: GRUNDY, Felix; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74455968&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Hongbo AU - Lee, Kyung Min AU - White, Timothy J. AU - Oates, William S. T1 - trans-cis and trans-cis-trans Microstructure Evolution of Azobenzene Liquid-Crystal Polymer Networks. JO - Macromolecular Theory & Simulations JF - Macromolecular Theory & Simulations Y1 - 2012/06// VL - 21 IS - 5 M3 - Article SP - 285 EP - 301 SN - 10221344 AB - The photomechanics of azobenzene LCNs is modeled using a nonlinear continuum mechanics approach that couples photoisomerization of liquid crystal domain structures with light absorption and deformation of a glassy polymer network. The effects during UV-stimulated trans-cis photomechanical deformation versus blue-green light ( trans-cis-trans) photomechanical deformation are simulated. Different bending deformation is predicted by assuming liquid-crystal order/disorder behavior during trans-cis photoisomerization in comparison to light-polarization-driven reorientation of the trans phase during potential trans-cis-trans photoisomerization. Light-controlled deformation mechanisms offer support for improved control of photo-responsive morphing structures with a single blue-green polarized light source. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecular Theory & Simulations is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 76609095; Wang, Hongbo 1 Lee, Kyung Min 2 White, Timothy J. 2 Oates, William S. 1; Affiliation: 1: Florida Center for Advanced Aero Propulsion (FCAAP), Department of Mechanical Engineering, Florida A & M and Florida State University, Tallahassee, FL 32310, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, 3005 Hobson Way B-651 St. 1, Wright Patterson Air Force Base, OH 45433-7750, USA; Source Info: Jun2012, Vol. 21 Issue 5, p285; Number of Pages: 17p; Document Type: Article L3 - 10.1002/mats.201100089 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76609095&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McConney, Michael E. AU - Duning, Madeline M. AU - Natarajan, Lalgudi V. AU - Voevodin, Anastasia A. AU - Tondiglia, Vincent P. AU - White, Timothy J. AU - Bunning, Timothy J. T1 - Tuning of the Reflection Properties of Templated Cholesteric Liquid Crystals using Phase Transitions. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2012/06// VL - 559 IS - 1 M3 - Article SP - 115 EP - 126 SN - 15421406 AB - The magnitude of the color changes induced by heating chiral templated polymer structures formed in spatially heterogeneous cells is examined. The large blue and subsequent red tuning of the selective reflection wavelength, caused by deswelling/reswelling of the network at the transition temperatures, is affected by the network crosslink density, heating/cooling rates, and architecture of the cell. The system is stable to multiple heat/cool cycles and shows large scale coloration changes at heating rates up to 10°C/min. At higher heating rates, a distortion of the selective reflection notch shape occurs during tuning. The magnitude of the color change is not affected by rate. At both high and low crosslink density, no tuning is observed. A window of network elasticity and responsiveness is needed to enable the anisotropic contraction/expansion processes to be observed macroscopically. Finally, the magnitude of tuning relative to the cell thickness and spatial heterogeneity across the thickness direction is explored. In thin cells, the tuning range was substantially diminished. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REFLECTION (Optics) KW - LIQUID crystals KW - PHASE transformations (Physics) KW - CHIRALITY KW - POLYMERS KW - ELASTICITY KW - ANISOTROPY KW - Cholesteric LC KW - LC gel KW - phase transition KW - temperature tuning KW - templated polymer KW - wavelength tuning N1 - Accession Number: 75162449; McConney, Michael E. 1 Duning, Madeline M. 1 Natarajan, Lalgudi V. 2 Voevodin, Anastasia A. 1 Tondiglia, Vincent P. 2 White, Timothy J. 1 Bunning, Timothy J. 1; Email Address: Timothy.Bunning@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, OH, 45433 2: SAIC, Dayton, OH, 45433; Source Info: Jun2012, Vol. 559 Issue 1, p115; Subject Term: REFLECTION (Optics); Subject Term: LIQUID crystals; Subject Term: PHASE transformations (Physics); Subject Term: CHIRALITY; Subject Term: POLYMERS; Subject Term: ELASTICITY; Subject Term: ANISOTROPY; Author-Supplied Keyword: Cholesteric LC; Author-Supplied Keyword: LC gel; Author-Supplied Keyword: phase transition; Author-Supplied Keyword: temperature tuning; Author-Supplied Keyword: templated polymer; Author-Supplied Keyword: wavelength tuning; Number of Pages: 12p; Document Type: Article L3 - 10.1080/15421406.2012.658699 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75162449&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hubbs, John E. AU - Nathan, Vaidya AU - Tidrow, Meimei AU - Razeghi, Manijeh T1 - Radiometric characterization of long-wavelength infrared type II strained layer superlattice focal plane array under low-photon irradiance conditions. JO - Optical Engineering JF - Optical Engineering Y1 - 2012/06// VL - 51 IS - 6 M3 - Article SP - 1 EP - 8 SN - 00913286 AB - We present the results of the radiometric characterization of an "M" structure long wavelength infrared Type-II strained layer superlattice (SLS) infrared focal plane array (IRFPA) developed by Northwestern University (NWU). The performance of the M-structure SLS IRFPA was radiometrically characterized as a function of photon irradiance, integration time, operating temperature, and detector bias. Its performance is described using standard figures of merit: responsivity, noise, and noise equivalent irradiance. Assuming background limited performance operation at higher irradiances, the detector quantum efficiency for the SLS detector array is approximately 57%. The detector dark density at 80 K is 142 µA/cm², which represents a factor of seven reduction from previously measured devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL detectors KW - RESEARCH KW - RADIOMETRY KW - INFRARED detectors KW - INFRARED imaging KW - PHOTONS KW - SUPERLATTICES KW - infrared detectors KW - infrared focal plane array KW - low photon irradiance KW - strained layer superlattice detectors N1 - Accession Number: 98629619; Hubbs, John E. 1; Email Address: jhubbs@ball.com Nathan, Vaidya 1 Tidrow, Meimei 2 Razeghi, Manijeh 3; Affiliation: 1: Air Force Research Laboratory/Space Vehicles Directorate, Kirtland AFB, New Mexico 87117 2: Night Vision and Electronic Sensors Directorate, Fort Belvoir, Virginia 22060 3: Northwestern University, Center for Quantum Devices, Department of Electrical Engineering and Computer Science, Evanston, Illinois 60208; Source Info: Jun2012, Vol. 51 Issue 6, p1; Subject Term: OPTICAL detectors; Subject Term: RESEARCH; Subject Term: RADIOMETRY; Subject Term: INFRARED detectors; Subject Term: INFRARED imaging; Subject Term: PHOTONS; Subject Term: SUPERLATTICES; Author-Supplied Keyword: infrared detectors; Author-Supplied Keyword: infrared focal plane array; Author-Supplied Keyword: low photon irradiance; Author-Supplied Keyword: strained layer superlattice detectors; Number of Pages: 8p; Document Type: Article L3 - 10.1117/1.OE.51.6.064002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98629619&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Watson, Edward A. T1 - Active Imaging: Concepts, Components, and Applications. JO - Optical Engineering JF - Optical Engineering Y1 - 2012/06// VL - 51 IS - 6 M3 - Article SP - 1 EP - 1 SN - 00913286 AB - An introduction is presented in which the editor discusses various reports within the issue on topics including the advantages of range gating, sensing of polarization, speckle noise reduction, development of advanced focal plane arrays, and structured illumination. KW - OPTICAL polarization KW - RESEARCH KW - SPECKLE noise KW - FOCAL plane arrays sensors N1 - Accession Number: 98629598; Watson, Edward A. 1,2; Email Address: edward.watson@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, 2241 Avionics Circle, WPAFB, Ohio 45433 2: University of Dayton; Source Info: Jun2012, Vol. 51 Issue 6, p1; Subject Term: OPTICAL polarization; Subject Term: RESEARCH; Subject Term: SPECKLE noise; Subject Term: FOCAL plane arrays sensors; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98629598&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bucklew, Victor AU - Wysocki, Bryant AU - Pollock, Clifford T1 - Femtosecond carrier dynamics in photoexcited highly ordered pyrolytic graphite films JO - Optical Materials JF - Optical Materials Y1 - 2012/06// VL - 34 IS - 8 M3 - Article SP - 1299 EP - 1302 SN - 09253467 AB - Abstract: The ultrafast relaxation of photoexcited carriers in thin films of exfoliated highly ordered pyrolytic graphite are examined using the equal-pulse correlation technique. An extremely fast relaxation due to intraband carrier–carrier thermalization was observed at 15±10fs followed by intraband carrier–optical phonon interaction on the order of 175±30fs. A modulation in the absorption depth of 1.4% was observed in the samples from partial saturation due to Pauli blocking. [Copyright &y& Elsevier] AB - Copyright of Optical Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FEMTOSECOND lasers KW - PYROLYSIS KW - CARBON films KW - RELAXATION phenomena KW - PHONONS KW - THERMAL analysis KW - Carrier dynamics KW - Equal-pulse correlation KW - Graphene KW - HOPG KW - Phonon KW - Pump–probe N1 - Accession Number: 74498892; Bucklew, Victor 1 Wysocki, Bryant 1,2; Email Address: btwq@cornell.edu Pollock, Clifford 1; Affiliation: 1: School of Electrical and Computer Engineering, Cornell University, Ithaca, NY 14853, United States 2: Air Force Research Laboratory, Information Directorate, Rome, NY 13441, United States; Source Info: Jun2012, Vol. 34 Issue 8, p1299; Subject Term: FEMTOSECOND lasers; Subject Term: PYROLYSIS; Subject Term: CARBON films; Subject Term: RELAXATION phenomena; Subject Term: PHONONS; Subject Term: THERMAL analysis; Author-Supplied Keyword: Carrier dynamics; Author-Supplied Keyword: Equal-pulse correlation; Author-Supplied Keyword: Graphene; Author-Supplied Keyword: HOPG; Author-Supplied Keyword: Phonon; Author-Supplied Keyword: Pump–probe; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.optmat.2012.02.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74498892&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roslyak, O. AU - Gumbs, Godfrey AU - Huang, Danhong T1 - Energy loss spectroscopy of epitaxial versus free-standing multilayer graphene JO - Physica E JF - Physica E Y1 - 2012/06// VL - 44 IS - 9 M3 - Article SP - 1874 EP - 1884 SN - 13869477 AB - Abstract: We present a formalism and numerical results for the energy loss of a charged particle scattered at an arbitrary angle from epitaxially grown multilayer graphene (MLG). It is compared with that of free-standing graphene layers. Specifically, we investigated the effect of the substrate induced energy gap on one of the layers. The gap yields collective plasma oscillations whose characteristics are qualitatively and quantitatively different from those produced by Dirac fermions in gapless graphene. The range of wave numbers for undamped self-sustaining plasmons is increased as the gap is increased, thereby substantially increasing and red-shifting the MLG stopping power for some range of charged particle velocity. We also applied our formalism to interpret several distinct features of experimentally obtained electron energy loss spectroscopy (EELS) data. [Copyright &y& Elsevier] AB - Copyright of Physica E is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON energy loss spectroscopy KW - EPITAXY KW - NUMERICAL analysis KW - GRAPHENE KW - PARTICLE accelerators KW - ENERGY gaps (Physics) KW - PLASMA oscillations N1 - Accession Number: 77452333; Roslyak, O. 1; Email Address: avroslyak@gmail.com Gumbs, Godfrey 1 Huang, Danhong 2; Affiliation: 1: Department of Physics and Astronomy, Hunter College at the City University of New York, 695 Park Avenue New York, NY 10065, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, NM 87117, USA; Source Info: Jun2012, Vol. 44 Issue 9, p1874; Subject Term: ELECTRON energy loss spectroscopy; Subject Term: EPITAXY; Subject Term: NUMERICAL analysis; Subject Term: GRAPHENE; Subject Term: PARTICLE accelerators; Subject Term: ENERGY gaps (Physics); Subject Term: PLASMA oscillations; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.physe.2012.05.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77452333&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Park, Hyoungki AU - Fellinger, Michael R. AU - Lenosky, Thomas J. AU - Tipton, William W. AU - Trinkle, Dallas R. AU - Rudin, Sven P. AU - Woodward, Christopher AU - Wilkins, John W. AU - Hennig, Richard G. T1 - Ab initio based empirical potential used to study the mechanical properties of molybdenum. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2012/06// VL - 85 IS - 21 M3 - Article SP - 1 EP - 10 SN - 10980121 AB - Density-functional theory energies, forces, and elastic constants determine the parametrization of an empirical, modified embedded-atom method potential for molybdenum. The accuracy and transferability of the potential are verified by comparison to experimental and density-functional data for point defects, phonons, thermal expansion, surface and stacking fault energies, and ideal shear strength. Searching the energy landscape predicted by the potential using a genetic algorithm verifies that it reproduces not only the correct bcc ground state of molybdenum but also all low-energy metastable phases. The potential is also applicable to the study of plastic deformation and used to compute energies, core structures, and Peierls stresses of screw and edge dislocations. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMPIRICAL research KW - MOLYBDENUM KW - METALS -- Mechanical properties KW - SHEAR strength KW - ELASTICITY KW - DENSITY functionals KW - FORCE & energy KW - GENETIC algorithms N1 - Accession Number: 79172912; Park, Hyoungki 1; Email Address: hkpark@mps.ohio-state.edu Fellinger, Michael R. 1 Lenosky, Thomas J. 2 Tipton, William W. 3 Trinkle, Dallas R. 4 Rudin, Sven P. 5 Woodward, Christopher 6 Wilkins, John W. 1 Hennig, Richard G. 1,3; Affiliation: 1: Department of Physics, Ohio State University, Columbus, Ohio 43210, USA 2: 1974 Kirby Way San Jose, California 95124-1324, USA 3: Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853-1501, USA 4: Department of Material Science and Engineering, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801, USA 5: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA 6: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, USA; Source Info: Jun2012, Vol. 85 Issue 21, p1; Subject Term: EMPIRICAL research; Subject Term: MOLYBDENUM; Subject Term: METALS -- Mechanical properties; Subject Term: SHEAR strength; Subject Term: ELASTICITY; Subject Term: DENSITY functionals; Subject Term: FORCE & energy; Subject Term: GENETIC algorithms; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 10p; Document Type: Article L3 - 10.1103/PhysRevB.85.214121 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79172912&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carry, B. AU - Kaasalainen, M. AU - Merline, W.J. AU - Müller, T.G. AU - Jorda, L. AU - Drummond, J.D. AU - Berthier, J. AU - O'Rourke, L. AU - Ďurech, J. AU - Küppers, M. AU - Conrad, A. AU - Tamblyn, P. AU - Dumas, C. AU - Sierks, H. T1 - Shape modeling technique KOALA validated by ESA Rosetta at (21) Lutetia JO - Planetary & Space Science JF - Planetary & Space Science Y1 - 2012/06// VL - 66 IS - 1 M3 - Article SP - 200 EP - 212 SN - 00320633 AB - Abstract: We present here a comparison of our results from ground-based observations of asteroid (21) Lutetia with imaging data acquired during the flyby of the asteroid by the ESA Rosetta mission. This flyby provided a unique opportunity to evaluate and calibrate our method of determination of size, 3-D shape, and spin of an asteroid from ground-based observations. Knowledge of certain observable physical properties of small bodies (e.g., size, spin, 3-D shape, and density) have far-reaching implications in furthering our understanding of these objects, such as composition, internal structure, and the effects of non-gravitational forces. We review the different observing techniques used to determine the above physical properties of asteroids and present our 3-D shape-modeling technique KOALA – Knitted Occultation, Adaptive-optics, and Lightcurve Analysis – which is based on multi-dataset inversion. We compare the results we obtained with KOALA, prior to the flyby, on asteroid (21) Lutetia with the high-spatial resolution images of the asteroid taken with the OSIRIS camera on-board the ESA Rosetta spacecraft, during its encounter with Lutetia on 2010 July 10. The spin axis determined with KOALA was found to be accurate to within 2°, while the KOALA diameter determinations were within 2% of the Rosetta-derived values. The 3-D shape of the KOALA model is also confirmed by the spectacular visual agreement between both 3-D shape models (KOALA pre- and OSIRIS post-flyby). We found a typical deviation of only 2km at local scales between the profiles from KOALA predictions and OSIRIS images, resulting in a volume uncertainty provided by KOALA better than 10%. Radiometric techniques for the interpretation of thermal infrared data also benefit greatly from the KOALA shape model: the absolute size and geometric albedo can be derived with high accuracy, and thermal properties, for example the thermal inertia, can be determined unambiguously. The corresponding Lutetia analysis leads to a geometric albedo of 0.19±0.01 and a thermal inertia below 40Jm−2 s−0.5 K−1, both in excellent agreement with the Rosetta findings. We consider this to be a validation of the KOALA method. Because space exploration will remain limited to only a few objects, KOALA stands as a powerful technique to study a much larger set of small bodies using Earth-based observations. [Copyright &y& Elsevier] AB - Copyright of Planetary & Space Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASTEROIDS KW - ASTRONOMICAL observations KW - IMAGING systems in astronomy KW - LIGHT curves KW - (21) Lutetia KW - Asteroid KW - Disk-resolved imaging KW - KOALA KW - Rosetta KW - ROSETTA (Spacecraft) KW - EUROPEAN Space Agency N1 - Accession Number: 75170026; Carry, B. 1; Email Address: benoit.carry@esa.int Kaasalainen, M. 2 Merline, W.J. 3 Müller, T.G. 4 Jorda, L. 5 Drummond, J.D. 6 Berthier, J. 7 O'Rourke, L. 1 Ďurech, J. 8 Küppers, M. 1 Conrad, A. 9 Tamblyn, P. 3 Dumas, C. 10 Sierks, H. 11; Affiliation: 1: European Space Astronomy Centre, ESA, P.O. Box 78, 28691 Villanueva de la Cañada Madrid, Spain 2: Tampere University of Technology, P.O. Box 553, 33101 Tampere, Finland 3: Southwest Research Institute, 1050 Walnut St. #300, Boulder, CO 80302, USA 4: Max-Planck-Institut für extraterrestrische Physik (MPE), Giessenbachstrasse, 85748 Garching, Germany 5: Laboratoire d'Astrophysique de Marseille, Université de Provence, Marseille, France 6: Starfire Optical Range, Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117-577, USA 7: Institut de Mécanique Céleste et de Calcul des Éphémérides, Observatoire de Paris, UMR8028 CNRS, 77 av. Denfert-Rochereau 75014 Paris, France 8: Astronomical Institute, Faculty of Mathematics and Physics, Charles University in Prague, V Holešovičkách 2, 18000 Prague, Czech Republic 9: Max Planck Institute für Astronomy (MPA), Königstuhl 17, 69117 Heidelberg, Germany 10: European Southern Observatory, Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile 11: Max-Planck-Institut für Sonnensystemforschung (MPS), Max-Planck-Strasse 2, 37191 Katlenburg-Lindau, Germany; Source Info: Jun2012, Vol. 66 Issue 1, p200; Subject Term: ASTEROIDS; Subject Term: ASTRONOMICAL observations; Subject Term: IMAGING systems in astronomy; Subject Term: LIGHT curves; Author-Supplied Keyword: (21) Lutetia; Author-Supplied Keyword: Asteroid; Author-Supplied Keyword: Disk-resolved imaging; Author-Supplied Keyword: KOALA; Author-Supplied Keyword: Rosetta; Company/Entity: ROSETTA (Spacecraft) Company/Entity: EUROPEAN Space Agency; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.pss.2011.12.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75170026&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sands, Brian L. AU - Huang, Shih K. AU - Speltz, Jared W. AU - Niekamp, Matthew A. AU - Schmidt, Jacob B. AU - Ganguly, Biswa N. T1 - Dynamic electric potential redistribution and its influence on the development of a dielectric barrier plasma jet. JO - Plasma Sources Science & Technology JF - Plasma Sources Science & Technology Y1 - 2012/06// VL - 21 IS - 3 M3 - Article SP - 1 EP - 11 SN - 09630252 AB - We investigate the initiation and development of a streamer-like plasma jet generated in a single-electrode dielectric barrier configuration at atmospheric pressure. The influence of dielectric boundary conditions on discharge propagation dynamics, morphology and current distribution was studied using spatially and temporally resolved emission spectroscopy and wide-bandwidth current measurements. A Phantom high-frame-rate camera system was used to visualize discharge inception as a function of pulse repetition frequency, which was varied between 1 and 20 kHz. At discharge inception, with the copper ring anode located 20mm behind the capillary tip, the discharge propagated along the 2mm diameter inner wall of the glass capillary regardless of pulse repetition frequency. The steady-state morphology remained annular below 6 kHz, but gradually transitioned to an axial morphology with the expansion of a dark wall sheath towards the anode as the pulse repetition frequency was increased to 10 kHz. In the axial mode, the ionization front steadily decelerated with a corresponding decrease in peak emission intensity, while emission from the residual plasma channel increased. This indicated a dynamic redistribution of electric potential from the ionization front into the residual plasma channel that was attributed to charge accumulation on the dielectric surface between discharge pulses. [ABSTRACT FROM AUTHOR] AB - Copyright of Plasma Sources Science & Technology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC potential KW - PLASMA jets KW - DIELECTRICS KW - ELECTRIC discharges KW - EMISSION spectroscopy KW - SURFACES (Technology) KW - IONIZATION (Atomic physics) N1 - Accession Number: 77490945; Sands, Brian L. 1,2; Email Address: brian.sands@wpafb.af.mil Huang, Shih K. 3 Speltz, Jared W. 3 Niekamp, Matthew A. 3 Schmidt, Jacob B. 2,4 Ganguly, Biswa N. 2; Affiliation: 1: UES, Inc. 4401 Dayton-Xenia Rd. Dayton, OH 45432, USA 2: Air Force Research Laboratory, 2645 5th St. Wright Patterson Air Force Base, OH 45433, USA 3: Wright State University, Department of Mechanical and Materials Engineering, 3640 Colonel Glenn Hwy., Dayton, OH 45435, USA 4: Spectral Energies, LLC. 5100 Springfield St. Suite 301, Dayton, OH 45431, USA; Source Info: Jun2012, Vol. 21 Issue 3, p1; Subject Term: ELECTRIC potential; Subject Term: PLASMA jets; Subject Term: DIELECTRICS; Subject Term: ELECTRIC discharges; Subject Term: EMISSION spectroscopy; Subject Term: SURFACES (Technology); Subject Term: IONIZATION (Atomic physics); Number of Pages: 11p; Document Type: Article L3 - 10.1088/0963-0252/21/3/034009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77490945&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Urabe, Keiichiro AU - Sands, Brian L. AU - Ganguly, Biswa N. AU - Sakai, Osamu T1 - Temporally and spectrally resolved observation of a crossed-flow DBD plasma jet using pure helium and argon/acetone mixed gases. JO - Plasma Sources Science & Technology JF - Plasma Sources Science & Technology Y1 - 2012/06// VL - 21 IS - 3 M3 - Article SP - 1 EP - 10 SN - 09630252 AB - A crossed gas flow dielectric barrier discharge plasma jet using vertical pure helium and tilted argon/acetone mixed gases is investigated in this study, mainly by an intensified charge-coupled device (ICCD) camera. We have observed ionization-front propagation and transient glow discharge formation following the rise of the applied voltage pulse. A secondary discharge with a reverse polarity was ignited during the falling slope of the applied voltage pulse. In order to analyze excited-species distribution inside the discharge, optical interference filters were placed in front of the ICCD camera with the center wavelengths set at the excited species' transition. The imaging results revealed detailed discharge structures around the crossing point of the two gas flows including bridging emission between the two flows that changed position with time. We also discuss the ignition mechanisms of the secondary discharge considering effects of accumulated charge during the primary discharge and changes in the channel conductivity following the primary discharge. [ABSTRACT FROM AUTHOR] AB - Copyright of Plasma Sources Science & Technology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA jets KW - HELIUM plasmas KW - ARGON KW - ACETONE KW - ELECTRIC discharges KW - GAS flow KW - CCD cameras N1 - Accession Number: 77490940; Urabe, Keiichiro 1 Sands, Brian L. 2,3 Ganguly, Biswa N. 2 Sakai, Osamu 1; Affiliation: 1: Department of Electronic Science and Engineering, Kyoto University, Kyoto-Daigaku Katsura Nishikyo-ku, Kyoto 615-8510, Japan 2: Air Force Research Laboratory, Dayton, OH 45433, USA 3: UES Inc., Dayton, OH 45433, USA; Source Info: Jun2012, Vol. 21 Issue 3, p1; Subject Term: PLASMA jets; Subject Term: HELIUM plasmas; Subject Term: ARGON; Subject Term: ACETONE; Subject Term: ELECTRIC discharges; Subject Term: GAS flow; Subject Term: CCD cameras; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1088/0963-0252/21/3/034004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77490940&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pigage, Helen K. AU - Pigage, Jon C. AU - Peyton, Roger D. T1 - SIPHONAPTERA OF PEROMYSCUS IN THE NIOBRARA CHALK BARRENS, COLORADO. JO - Southwestern Naturalist JF - Southwestern Naturalist Y1 - 2012/06// VL - 57 IS - 2 M3 - Article SP - 210 EP - 212 SN - 00384909 AB - We collected 327 Peromyscus truei (pinyon deermice), 211 P. maniculatus (North American deermice), and 38 P. leucopus (white-footed deermice) on Fort Carson Military Reservation, Pueblo County, Colorado, during May-June 2007. The deermice hosted 408 fleas including 238 Aetheca wagneri, 169 Orchopeas leucopus, and 1 Meringis parkeri. Both A. wagneri and O. leucopus were on all species of deermice. Prevalence of fleas was 42.1% for P. leucopus, 36.4% for P. truei, and 35.1% for P. maniculatus. Prevalence of O. leucopus was significantly greater for P. truei (43.1%) than for P. maniculatus (13.7%) and P. leucopus (13.2%). Conversely, P. maniculatus (52.1%) had a significantly greater prevalence of A. wagneri than either P. leucopus (47.1%) or P. truei (33.6%). (English) [ABSTRACT FROM AUTHOR] AB - Colectamos 327 Peromyscus truei (ratones piñonero), 211 P. maniculatus (ratones ciervo), y 38 P. leucopus (ratones de patas blanca) durante mayo a junio del 2007 en la Reserva Militar de Fort Carson, condado de Pueblo, Colorado, USA. Los ratones albergaron a 408 pulgas, incluyendo a 238 Aetheca wagneri, 169 Orchopeas leucopus,y1 Meringis parkeri. Ambos A. wagneri y O. leucopus fueron encontrados en todas especies del ratón. La prevalencia de infestación de pulgas fue el 42.1% en P. leucopus, el 36.4% en P. truei, y el 35.1% en P. maniculatus. La prevalencia de O. leucopus fue significativamente mayor en P. truei (43.1%) comparado con P. maniculatus (13.7%) y P. leucopus (13.2%). Inversamente, P. maniculatus (52.1%) tuvo la prevalencia de A. wagneri significativamente mayor que P. leucopus (47.1%) o P. truei (33.6%). (Spanish) [ABSTRACT FROM AUTHOR] AB - Copyright of Southwestern Naturalist is the property of Southwestern Association of Naturalists and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLEAS KW - PEROMYSCUS KW - PINON mouse KW - MILITARY reservations KW - PUEBLO County (Colo.) KW - COLORADO KW - NORTH America N1 - Accession Number: 78236583; Pigage, Helen K. 1; Email Address: helen.pigage@usafa.edu Pigage, Jon C. 2 Peyton, Roger D. 3; Affiliation: 1: HQ USAFA/DFB, Department of Biology, 2355 Faculty Drive, Suite 2P389, United States Air Force Academy, CO 80840 2: Department of Biology, University of Colorado at Colorado Springs, 1420 Austin Bluffs Parkway, Colorado Springs, CO 80918 3: 1626 Evans Street, Building 1219, Directorate of Public Works--Environmental Division, Fort Carson, CO 80913; Source Info: Jun2012, Vol. 57 Issue 2, p210; Subject Term: FLEAS; Subject Term: PEROMYSCUS; Subject Term: PINON mouse; Subject Term: MILITARY reservations; Subject Term: PUEBLO County (Colo.); Subject Term: COLORADO; Subject Term: NORTH America; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78236583&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kozlowski, Erick J. AU - Barcia, Anthony M. AU - Tokish, John M. T1 - Meniscus Repair: The Role of Accelerated Rehabilitation in Return to Sport. JO - Sports Medicine & Arthroscopy Review JF - Sports Medicine & Arthroscopy Review Y1 - 2012/06// VL - 20 IS - 2 M3 - Article SP - 121 EP - 125 SN - 10628592 AB - A review of the article "Meniscus Repair: The Role of Accelerated Rehabilitation in Return to Sport," by Erick J. Kozlowski, and Anthony M. Barcia, which appeared in the periodical "Sports Medicine and Arthroscopy Review" on June, 2012 is presented. KW - MENISCUS (Anatomy) KW - SPORTS medicine KW - ARTHROSCOPY KW - TRANSPLANTATION KW - meniscal repair KW - meniscus KW - rehabilitation N1 - Accession Number: 76121738; Kozlowski, Erick J. 1 Barcia, Anthony M. 2 Tokish, John M. 2; Affiliation: 1: United States Air Force Academy, Colorado Springs, CO. 2: Department of Orthopedic Surgery, Tripler Army Medical Center. Honolulu, HI.; Source Info: Jun2012, Vol. 20 Issue 2, p121; Subject Term: MENISCUS (Anatomy); Subject Term: SPORTS medicine; Subject Term: ARTHROSCOPY; Subject Term: TRANSPLANTATION; Author-Supplied Keyword: meniscal repair; Author-Supplied Keyword: meniscus; Author-Supplied Keyword: rehabilitation; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76121738&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Berger, Matthew AU - Silva, Claudio T. T1 - Medial Kernels. JO - Computer Graphics Forum JF - Computer Graphics Forum Y1 - 2012/05/31/ VL - 31 IS - 2pt4 M3 - Article SP - 795 EP - 804 PB - Wiley-Blackwell SN - 01677055 AB - We introduce the medial kernel, an association measure which provides for a robust construction of volume-aware distances defined directly on point clouds. The medial kernel is a similarity measure defined as the likelihood of two points belonging to a common interior medial ball. We use the medial kernel to construct a random walk on the point cloud, where movement in the walk is restricted to regions containing similar medial balls. Our distances are defined as the diffusion distances of this random walk, assigning low distance to points belonging to similar medial regions. These distances allow for a robust means of processing incomplete point clouds, capable of distinguishing nearby yet separate undersampled components, while also associating points which are far in Euclidean distance yet mutually share an interior volume. We leverage these distances for several applications: volumetric part segmentation, the construction of function bases, and reconstruction-by-parts - a surface reconstruction method which adheres to the medial kernel. [ABSTRACT FROM AUTHOR] AB - Copyright of Computer Graphics Forum is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - KERNEL functions KW - COMPUTER graphics KW - RANDOM walks (Mathematics) KW - SET theory KW - SEGMENTATION (Image processing) KW - IMAGE reconstruction KW - I.3.3 [Computer Graphics]: Picture/Image Generation-Line and curve generation N1 - Accession Number: 76513595; Berger, Matthew 1,2 Silva, Claudio T. 3; Affiliation: 1: University of Utah 2: Air Force Research Laboratory, Information Directorate 3: Polytechnic Institute of New York University; Source Info: May2012, Vol. 31 Issue 2pt4, p795; Subject Term: KERNEL functions; Subject Term: COMPUTER graphics; Subject Term: RANDOM walks (Mathematics); Subject Term: SET theory; Subject Term: SEGMENTATION (Image processing); Subject Term: IMAGE reconstruction; Author-Supplied Keyword: I.3.3 [Computer Graphics]: Picture/Image Generation-Line and curve generation; Number of Pages: 10p; Illustrations: 13 Color Photographs, 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1111/j.1467-8659.2012.03060.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76513595&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Thomas M. AU - Shuman, Nicholas S. AU - Viggiano, A. A. T1 - Behavior of rate coefficients for ion-ion mutual neutralization, 300-550 K. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2012/05/28/ VL - 136 IS - 20 M3 - Article SP - 204306 PB - American Institute of Physics SN - 00219606 AB - Rate coefficients kMN have been measured for a number of anion neutralization reactions with Ar+ and Kr+ over the temperature range 300-550 K. For the first time, the data set includes anions of radicals and other short-lived species. In the present paper, we review these results and make note of correlations with reduced mass, electron binding energy of the anion (equivalent to the electron affinity of the corresponding neutral), and temperature, and compare with expectations from absorbing sphere models. An intriguing result is that the data for diatomic anions neutralized by Ar+ and Kr+ have kMN values close to 3 × 10-8 cm3 s-1 at 300 K, a figure which is lower than those for all of the polyatomic anions at 300 K except for SF5- + Kr+. For the polyatomic anions studied here, neutralized by Ar+ and Kr+, the reduced mass dependence agrees with theory, on average, but we find a stronger temperature dependence of T-0.9 than expected from the theoretical E-0.5 energy dependence of the rate coefficient at thermal energies. The kMN show a weak dependence on the electron binding energy of the anion for the polyatomic species studied. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEUTRALIZATION (Chemistry) KW - ION-ion collisions KW - CHEMICAL reactions KW - TEMPERATURE effect KW - RADICALS (Chemistry) KW - KRYPTON KW - ELECTRON affinity N1 - Accession Number: 76272856; Miller, Thomas M. 1 Shuman, Nicholas S. 1 Viggiano, A. A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117-5776,; Source Info: 5/28/2012, Vol. 136 Issue 20, p204306; Subject Term: NEUTRALIZATION (Chemistry); Subject Term: ION-ion collisions; Subject Term: CHEMICAL reactions; Subject Term: TEMPERATURE effect; Subject Term: RADICALS (Chemistry); Subject Term: KRYPTON; Subject Term: ELECTRON affinity; Number of Pages: 7p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.4720499 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76272856&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stone, D.S. AU - Migas, J. AU - Martini, A. AU - Smith, T. AU - Muratore, C. AU - Voevodin, A.A. AU - Aouadi, S.M. T1 - Adaptive NbN/Ag coatings for high temperature tribological applications JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2012/05/25/ VL - 206 IS - 19/20 M3 - Article SP - 4316 EP - 4321 SN - 02578972 AB - Abstract: Nanocomposite films that consist of niobium nitride with silver nanoinclusions were created using unbalanced magnetron sputtering to investigate their potential as adaptive, friction reducing coatings. The coatings were tribotested against a Si3N4 counterface in the 25 to 1000°C temperature range. The coatings displayed coefficients of friction in the 0.15 to 0.30 range at T >700°C. Post-wear testing structural and chemical characterization revealed that, in the low to mid-temperature range, silver migrated to the surface to reduce friction. At higher temperatures, oxygen, silver and the transition metal reacted to form lubricious binary metal oxide phases (silver niobate) in addition to pure silver. In situ Raman spectroscopy measurements were taken during heating and wear testing at 750°C to identify the evolution of phases in the coatings surface and in the wear track. The analysis of the in situ Raman spectroscopy data revealed the various stages of formation of these binary metal oxides. The coatings were subsequently doped with MoS2 to investigate the effect of the introduction of a low temperature lubricant. The addition of MoS2 did not appreciably reduce the room temperature coefficient of friction, likely due to the miscibility of this compound with the transition metal nitride. However, the coefficient of friction was significantly reduced at high temperatures because of the synergistic lubricious effect of silver niobates and molybdates. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRIBOLOGY KW - NIOBIUM compounds KW - GOLD coatings KW - HEAT resistant alloys KW - NANOCOMPOSITE materials KW - NIOBIUM nitride KW - MAGNETRON sputtering KW - Chameleon coating KW - Friction KW - Niobium nitride KW - Silver niobate KW - Tribology N1 - Accession Number: 76157604; Stone, D.S. 1 Migas, J. 1 Martini, A. 2 Smith, T. 3 Muratore, C. 3 Voevodin, A.A. 3 Aouadi, S.M. 1; Email Address: saouadi@physics.siu.edu; Affiliation: 1: Department of Physics, Southern Illinois University, Carbondale, IL 62901, USA 2: School of Engineering, University of California Merced, Merced, CA 95343, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: May2012, Vol. 206 Issue 19/20, p4316; Subject Term: TRIBOLOGY; Subject Term: NIOBIUM compounds; Subject Term: GOLD coatings; Subject Term: HEAT resistant alloys; Subject Term: NANOCOMPOSITE materials; Subject Term: NIOBIUM nitride; Subject Term: MAGNETRON sputtering; Author-Supplied Keyword: Chameleon coating; Author-Supplied Keyword: Friction; Author-Supplied Keyword: Niobium nitride; Author-Supplied Keyword: Silver niobate; Author-Supplied Keyword: Tribology; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.surfcoat.2012.04.054 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76157604&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yan Wang AU - Xiulin Ruan AU - Roy, Ajit K. T1 - Two-temperature nonequilibrium molecular dynamics simulation of thermal transport across metal-nonmetal interfaces. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2012/05/22/ VL - 85 IS - 20 M3 - Article SP - 1 EP - 1 SN - 10980121 AB - We have used a two-temperature nonequilibrium molecular dynamics method for predicting interfacial thermal resistance across metal-nonmetal interfaces. This method is an extension of the conventional nonequilibrium molecular dynamics for the dielectric-dielectric interface, where a temperature bias is imposed and the heat current is derived. We have included the electron degree of freedom for the interfacial thermal transport problem by treating the electron-phonon coupling with the two-temperature model. The method is demonstrated on two model systems, that is, silicon-copper interface and carbon-nanotube-copper interface. Temperature nonequilibrium between electrons and phonons in the metal side is quantitatively predicted, and a temperature drop across the interface is observed. The results agree with experimental data better than those obtained from conventional nonequilibrium molecular dynamics simulations where only phonons are considered. Our approach is capable of taking into account both the electron and lattice degrees of freedom in a single molecular dynamics simulation and is a generally useful tool for modeling interfacial thermal transport across metal-nonmetal interfaces. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR dynamics -- Simulation methods KW - ELECTRON-phonon interactions KW - HEAT transfer KW - NONMETALS KW - CHEMICAL equilibrium N1 - Accession Number: 111230466; Yan Wang 1 Xiulin Ruan 1; Email Address: ruan@purdue.edu Roy, Ajit K. 2; Affiliation: 1: School of Mechanical Engineering and the Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio 45433, USA; Source Info: May2012, Vol. 85 Issue 20, p1; Subject Term: MOLECULAR dynamics -- Simulation methods; Subject Term: ELECTRON-phonon interactions; Subject Term: HEAT transfer; Subject Term: NONMETALS; Subject Term: CHEMICAL equilibrium; Number of Pages: 1p; Document Type: Article L3 - 10.1103/PhysRevB.85.205311 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111230466&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Welter, John T. AU - Sathish, Shamachary AU - Dierken, Josiah M. AU - Brodrick, Philip G. AU - Cherry, Matthew R. AU - Heebl, Jason D. T1 - Broadband aperiodic air coupled ultrasonic lens. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/05/21/ VL - 100 IS - 21 M3 - Article SP - 214102 PB - American Institute of Physics SN - 00036951 AB - This paper demonstrates the possibility of subwavelength, defined as less than the incident wavelength, broadband focusing in an aperiodic air coupled ultrasonic lens. A near field probe is used to detect well defined resonances from 75 to 125 kHz. The spatial resolution at each of the resonant frequencies is determined and demonstrated to be smaller than the wavelength of the ultrasonic waves. The strongest resonance is observed at 82.9 kHz with a focal spot size of 3.12 mm. The subwavelength spatial resolution of the lens structures at the resonances is attributed to the near field scattering of the acoustic waves. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BROADBAND communication systems KW - APERIODICITY KW - WAVELENGTHS KW - ULTRASONIC waves KW - SOUND waves N1 - Accession Number: 76143316; Welter, John T. 1 Sathish, Shamachary 2 Dierken, Josiah M. 3 Brodrick, Philip G. 4 Cherry, Matthew R. 2 Heebl, Jason D. 5; Affiliation: 1: Air Force Research Laboratory, Nondestructive Evaluation Branch (AFRL/RXLP), 2230 Tenth St., Wright-Patterson AFB, Ohio 45433, 2: University of Dayton Research Institute, Structural Integrity Division, 300 College Park, Dayton, Ohio 45469, 3: Southwestern Ohio Council of Higher Education, 201 Witherby Dr., Kettering, Ohio 45429, 4: Southwestern Ohio Council of Higher Education, 7828 Shadowhill Way, Cincinnati, Ohio 45242, 5: U. S. Air Force Space and Missile Command, AFSPC/SNE, Los Angeles AFB, California 90245,; Source Info: 5/21/2012, Vol. 100 Issue 21, p214102; Subject Term: BROADBAND communication systems; Subject Term: APERIODICITY; Subject Term: WAVELENGTHS; Subject Term: ULTRASONIC waves; Subject Term: SOUND waves; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.4720149 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76143316&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hillmann, Susanne AU - Heuer, Henning AU - Calzada, Juan G. AU - Cooney, Adam T. AU - Foos, Bryan C. AU - Meyendorf, Norbert T1 - Validation of potentials and limitations of a high-frequency eddy current system in frequency sweep mode. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/05/18/ VL - 1430 IS - 1 M3 - Article SP - 433 EP - 440 PB - American Institute of Physics SN - 0094243X AB - To characterize very thin conductive layers on a conducting substrate using Eddy Current Techniques, low penetrations depths at high measurement frequencies are required. Equally high measurement frequencies are needed to characterize materials with very low electrical conductivity. For the characterization of the thickness of multi-layer-systems or layer-substrate-systems with very low variations of electrical conductivity, the multi-frequency approach may be a promising solution. To investigate the limitations of such high-frequency Eddy Current systems, experiments are performed using an extensive sample concept. Frequency dependent conductivity profiles that are obtained by conductivity calibration show remarkable results for different sample sets. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POTENTIAL theory (Physics) KW - EDDY currents (Electric) KW - ELECTRIC conductivity KW - SUBSTRATES (Materials science) KW - FREQUENCIES of oscillating systems -- Measurement KW - THICKNESS measurement N1 - Accession Number: 75344798; Hillmann, Susanne 1 Heuer, Henning 1 Calzada, Juan G. 2 Cooney, Adam T. 2 Foos, Bryan C. 2 Meyendorf, Norbert 1; Affiliation: 1: Fraunhofer IZFP, Dresden Branch, Maria-Reiche-Str. 2, 01109 Dresden, 2: Air Force Research Laboratory, AFRL/RXLP, 2230 10th Street, Wright-Patterson AFB, Ohio 45433-7817,; Source Info: 5/18/2012, Vol. 1430 Issue 1, p433; Subject Term: POTENTIAL theory (Physics); Subject Term: EDDY currents (Electric); Subject Term: ELECTRIC conductivity; Subject Term: SUBSTRATES (Materials science); Subject Term: FREQUENCIES of oscillating systems -- Measurement; Subject Term: THICKNESS measurement; Number of Pages: 8p; Illustrations: 10 Graphs; Document Type: Article L3 - 10.1063/1.4716260 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75344798&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hillmann, Susanne AU - Heuer, Henning AU - Calzada, Juan G. AU - Cooney, Adam T. AU - Foos, Bryan C. AU - Meyendorf, Norbert T1 - Characterization of wet conductive coatings using eddy current techniques. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/05/18/ VL - 1430 IS - 1 M3 - Article SP - 441 EP - 448 PB - American Institute of Physics SN - 0094243X AB - A solution is required to monitor the spraying and drying process of wet conductive coatings and respective film thickness and conductivity. The method presented is an Eddy Current based solution that could enable a fast and precise characterization of the conductive coating thickness during the drying process of the wet coatings when the conductivity is marginal and highly variable. One challenge of this application is the shifting of apparent conductivity of the coatings during the drying process resulting in property variations due to changes in the coating morphology, thickness and volume. A further challenge is the application of Eddy Current sensors to wet surfaces without contacting the wet film, therefore requiring constant lift-off to avoid contaminating the coil sensor. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductivity KW - WETTING KW - SURFACE coatings KW - EDDY currents (Electric) KW - THICKNESS measurement KW - SURFACES (Technology) KW - ELECTRIC contacts N1 - Accession Number: 75344939; Hillmann, Susanne 1 Heuer, Henning 1 Calzada, Juan G. 2 Cooney, Adam T. 2 Foos, Bryan C. 2 Meyendorf, Norbert 1; Affiliation: 1: Fraunhofer IZFP Dresden, Maria-Reiche-Str.2, 01109 Dresden, 2: Air Force Research Laboratory, AFRL/RXLP, 2230 10th Street, Wright-Patterson AFB, Ohio 45433-7817,; Source Info: 5/18/2012, Vol. 1430 Issue 1, p441; Subject Term: ELECTRIC conductivity; Subject Term: WETTING; Subject Term: SURFACE coatings; Subject Term: EDDY currents (Electric); Subject Term: THICKNESS measurement; Subject Term: SURFACES (Technology); Subject Term: ELECTRIC contacts; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 8p; Illustrations: 7 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.4716261 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75344939&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, M. Y. AU - Ko, R. T. T1 - Nondestructive assessment of pore size in foam-based hybrid composite materials. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/05/18/ VL - 1430 IS - 1 M3 - Article SP - 1064 EP - 1071 PB - American Institute of Physics SN - 0094243X AB - In-situ non-destructive evaluation (NDE) during processing of high temperature polymer based hybrids offers great potential to gain close control and achieve the desired level of pore size, with low overall development cost. During the polymer curing cycle, close control over the evolution of volatiles would be beneficial to avoid the presence of pores or at least control their sizes. Traditional NDE methods cannot realistically be expected to evaluate individual pores in such components, as each pore evolves and grows during curing. However, NDE techniques offer the potential to detect and quantify the macroscopic response of many pores that are undesirable or intentionally introduced into these advanced materials. In this paper, preliminary results will be presented for nondestructive assessment of pore size in foam-based hybrid composite materials using ultrasonic techniques. Pore size was evaluated through the frequency content of the ultrasonic signal. The effects of pore size on the attenuation of ultrasound were studied. Feasibility of this method was demonstrated on two types of foams with various pore sizes. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - PARTICLE size distribution KW - FOAMED materials KW - COMPOSITE materials KW - TEMPERATURE effect KW - FEASIBILITY studies N1 - Accession Number: 75344882; Chen, M. Y. 1 Ko, R. T. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469,; Source Info: 5/18/2012, Vol. 1430 Issue 1, p1064; Subject Term: NONDESTRUCTIVE testing; Subject Term: PARTICLE size distribution; Subject Term: FOAMED materials; Subject Term: COMPOSITE materials; Subject Term: TEMPERATURE effect; Subject Term: FEASIBILITY studies; NAICS/Industry Codes: 326150 Urethane and Other Foam Product (except Polystyrene) Manufacturing; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Illustrations: 1 Black and White Photograph, 1 Diagram, 8 Graphs; Document Type: Article L3 - 10.1063/1.4716339 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75344882&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blackshire, James L. AU - Soni, Som T1 - Lamb wave propagation in a restricted geometry composite pi-joint specimen. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/05/18/ VL - 1430 IS - 1 M3 - Article SP - 1299 EP - 1306 PB - American Institute of Physics SN - 0094243X AB - The propagation of elastic waves in a material can involve a number of complex physical phenomena, resulting in both subtle and dramatic effects on detected signal content. In recent years, the use of advanced methods for characterizing and imaging elastic wave propagation and scattering processes has increased, where for example the use of scanning laser vibrometry and advanced computational models have been used very effectively to identify propagating modes, scattering phenomena, and damage feature interactions. In the present effort, the propagation of Lamb waves within a narrow, constrained geometry composite pi-joint structure are studied using 3D finite element models and scanning laser vibrometry measurements, where the effects of varying sample thickness, complex joint curvatures, and restricted structure geometries are highlighted, and a direct comparison of computational and experimental results are provided for simulated and realistic geometry composite pi-joint samples. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAMB waves KW - COMPOSITE materials KW - JOINTS (Engineering) KW - ELASTIC waves KW - SCATTERING (Physics) KW - VIBRATION (Mechanics) -- Measurement KW - CONSTRAINTS (Physics) KW - THICKNESS measurement N1 - Accession Number: 75344811; Blackshire, James L. 1 Soni, Som 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RXLP), Wright-Patterson AFB, OH 45433, 2: Air Force Institute of Technology, Dept. Sys. & Engineering Management (AFIT/ENV), Wright-Patterson AFB, OH 45433,; Source Info: 5/18/2012, Vol. 1430 Issue 1, p1299; Subject Term: LAMB waves; Subject Term: COMPOSITE materials; Subject Term: JOINTS (Engineering); Subject Term: ELASTIC waves; Subject Term: SCATTERING (Physics); Subject Term: VIBRATION (Mechanics) -- Measurement; Subject Term: CONSTRAINTS (Physics); Subject Term: THICKNESS measurement; Number of Pages: 8p; Illustrations: 3 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.4716368 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75344811&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Medina, Enrique A. AU - Santiago, Jose AU - Lindgren, Eric A. AU - Buynak, Charles F. AU - Knopp, Jeremy S. T1 - Demonstration study for reliability assessment of SHM systems incorporating model-assisted probability of detection approach. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/05/18/ VL - 1430 IS - 1 M3 - Article SP - 1543 EP - 1550 PB - American Institute of Physics SN - 0094243X AB - This paper presents the results of a demonstration featuring the application of a validation protocol to a vibration-based structural damage sensing system. The results of the full validation study highlight the general protocol feasibility, emphasize the importance of evaluating key application characteristics prior to the POD study, and demonstrate an approach to quantify varying sensor durability on the POD performance. Challenges remain to properly address long time-scale effects with accelerated testing and large testing requirements due to the independence of the inspection of each flaw location. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RELIABILITY (Engineering) KW - STRUCTURAL health monitoring KW - MATHEMATICAL models KW - VIBRATION (Mechanics) KW - STRUCTURAL analysis (Engineering) KW - DEFORMATIONS (Mechanics) KW - FEASIBILITY studies N1 - Accession Number: 75344975; Aldrin, John C. 1 Medina, Enrique A. 2 Santiago, Jose 3 Lindgren, Eric A. 1 Buynak, Charles F. 1 Knopp, Jeremy S. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, 2: Science Applications International Corporation, Beavercreek, OH 45434, 3: Consultant, Aventura, FL 33160,; Source Info: 5/18/2012, Vol. 1430 Issue 1, p1543; Subject Term: RELIABILITY (Engineering); Subject Term: STRUCTURAL health monitoring; Subject Term: MATHEMATICAL models; Subject Term: VIBRATION (Mechanics); Subject Term: STRUCTURAL analysis (Engineering); Subject Term: DEFORMATIONS (Mechanics); Subject Term: FEASIBILITY studies; Number of Pages: 8p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.4716398 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75344975&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ko, R. T. AU - Lee, C. W. AU - Storage, T. AU - Chen, M. Y. T1 - Ultrasonic measurements of polyimide materials during heating. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/05/18/ VL - 1430 IS - 1 M3 - Article SP - 1699 EP - 1706 PB - American Institute of Physics SN - 0094243X AB - Innovative ultrasonic delay lines are being applied on polyimide neat resin for the detection of bubble formation during heating. These delay lines have certain advantageous characteristics that can enhance the detection of bubbles during the heating process of materials over the conventional curing sensors. A transition point in ultrasonic velocity during heating, which signifies the formation of bubbles, has been experimentally verified in water first and then in polyimide neat resin. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRASONIC measurement KW - POLYIMIDES KW - HEATING KW - GUMS & resins KW - BUBBLE dynamics KW - DELAY lines N1 - Accession Number: 75344945; Ko, R. T. 1 Lee, C. W. 2 Storage, T. 3 Chen, M. Y. 3; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469, 2: Chemical & Materials Engineering, University of Dayton, Dayton, Ohio 45469, 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: 5/18/2012, Vol. 1430 Issue 1, p1699; Subject Term: ULTRASONIC measurement; Subject Term: POLYIMIDES; Subject Term: HEATING; Subject Term: GUMS & resins; Subject Term: BUBBLE dynamics; Subject Term: DELAY lines; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; Number of Pages: 8p; Illustrations: 2 Color Photographs, 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.4716417 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75344945&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Sabbagh, Harold A. AU - Murphy, R. Kim AU - Sabbagh, Elias H. AU - Knopp, Jeremy S. AU - Lindgren, Eric A. AU - Cherry, Matthew R. T1 - Demonstration of model-assisted probability of detection evaluation methodology for eddy current nondestructive evaluation. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/05/18/ VL - 1430 IS - 1 M3 - Article SP - 1733 EP - 1740 PB - American Institute of Physics SN - 0094243X AB - A model-assisted POD (MAPOD) evaluation approach is explored for the eddy current inspection of fatigue cracks in titanium. Experimental results are presented comparing crack and EDM notch responses and different eddy current measurement systems. The MAPOD evaluation process is performed using a simulated case study, highlighting the benefit of leveraging better models to mitigate variation in the model fit and minimize test sample requirements. The benefit of validating NDE techniques that use inverse methods to estimate uncontrolled measurement conditions is also studied. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL models KW - EDDY currents (Electric) KW - NONDESTRUCTIVE testing KW - MATERIALS -- Fatigue KW - FRACTURE mechanics KW - TITANIUM KW - NOTCH effect KW - SIMULATION methods & models N1 - Accession Number: 75345034; Aldrin, John C. 1 Sabbagh, Harold A. 2 Murphy, R. Kim 2 Sabbagh, Elias H. 2 Knopp, Jeremy S. 3 Lindgren, Eric A. 3 Cherry, Matthew R. 4; Affiliation: 1: Computational Tools, Gurnee, IL 60031, 2: Victor Technologies LLC, Bloomington, IN 47401, 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, 4: University of Dayton Research Institute, Structural Integrity Division, Dayton, OH, 45469; Source Info: 5/18/2012, Vol. 1430 Issue 1, p1733; Subject Term: MATHEMATICAL models; Subject Term: EDDY currents (Electric); Subject Term: NONDESTRUCTIVE testing; Subject Term: MATERIALS -- Fatigue; Subject Term: FRACTURE mechanics; Subject Term: TITANIUM; Subject Term: NOTCH effect; Subject Term: SIMULATION methods & models; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 8p; Illustrations: 1 Diagram, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.4716421 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75345034&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kosa, Tamas AU - Sukhomlinova, Ludmila AU - Su, Linli AU - Taheri, Bahman AU - White, Timothy J. AU - Bunning, Timothy J. T1 - Light-induced liquid crystallinity. JO - Nature JF - Nature Y1 - 2012/05/17/ VL - 485 IS - 7398 M3 - Article SP - 347 EP - 349 PB - Nature Publishing Group SN - 00280836 AB - Liquid crystals are traditionally classified as thermotropic, lyotropic or polymeric, based on the stimulus that governs the organization and order of the molecular system. The most widely known and applied class of liquid crystals are a subset of thermotropic liquid crystals known as calamitic, in which adding heat can result in phase transitions from or into the nematic, cholesteric and smectic mesophases. Photoresponsive liquid-crystal materials and mixtures can undergo isothermal phase transitions if light affects the order parameter of the system within a mesophase sufficiently. In nearly all previous examinations, light exposure of photoresponsive liquid-crystal materials and mixtures resulted in order-decreasing photo-induced isothermal phase transitions. Under specialized conditions, an increase in order with light exposure has been reported, despite the tendency of the photoresponsive liquid-crystal system to reduce order in the exposed state. A direct, photo-induced transition from the isotropic to the nematic phase has been observed in a mixture of spiropyran molecules and a nematic liquid crystal. Here we report a class of naphthopyran-based materials that exhibit photo-induced conformational changes in molecular structure capable of yielding order-increasing phase transitions. Appropriate functionalization of the naphthopyran molecules leads to an exceedingly large order parameter in the open form, which results in a clear to strongly absorbing dichroic state. The increase in order with light exposure has profound implications in optics, photonics, lasing and displays and will merit further consideration for applications in solar energy harvesting. The large, photo-induced dichroism exhibited by the material system has been long sought in ophthalmic applications such as photochromic and polarized variable transmission sunglasses. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - MOLECULAR structure KW - CRYSTAL structure KW - SPIROPYRANS KW - CRYSTALLOGRAPHY N1 - Accession Number: 75275494; Kosa, Tamas 1 Sukhomlinova, Ludmila 2 Su, Linli 2 Taheri, Bahman 2 White, Timothy J. 3 Bunning, Timothy J. 4; Affiliation: 1: 1] Alpha Micron Inc., Kent, Ohio 44240, USA [2] 2: Alpha Micron Inc., Kent, Ohio 44240, USA 3: 1] Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Ohio 45433, USA [2] 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Ohio 45433, USA; Source Info: 5/17/2012, Vol. 485 Issue 7398, p347; Subject Term: LIQUID crystals; Subject Term: MOLECULAR structure; Subject Term: CRYSTAL structure; Subject Term: SPIROPYRANS; Subject Term: CRYSTALLOGRAPHY; Number of Pages: 3p; Illustrations: 1 Color Photograph, 3 Graphs; Document Type: Article L3 - 10.1038/nature11122 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75275494&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiao, C.Q. AU - Adams, S.F. T1 - Gas-phase ion–molecule reactions in selected cyclohexanes JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2012/05/15/ VL - 321-322 M3 - Article SP - 33 EP - 39 SN - 13873806 AB - Abstract: Ion–molecule reactions of cyclohexane, methylcyclohexane and ethylcyclohexane with hydrocarbon cations derived from these cyclohexanes, respectively, have been studied. These ion–molecule reactions take place via various channels including charge transfer, H− transfer, H2− transfer, H3− transfer, hydrocarbon anion transfer, and association with concerted fragmentation. Among these channels, H− transfer is the most prevalent, and for many of the reacting ions, it is the exclusive channel. Most of the reactions proceed in a direct mode, except for the reactions of C4H5+ or C4H7+ with cyclohexane, which in certain channels proceed via the formation of a long-lived collision complex. Some general trends in the reaction rates are observed: smaller reactant ions tend to exhibit faster reaction rates, and odd-electron ions react faster than the even-electron ions. For certain reactant ions, there is evidence of the existence of multiple structural isomers that have different reactivities. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CYCLOHEXANE KW - GAS phase reactions KW - ION-molecule collisions KW - METHYL cyclohexane KW - HYDROCARBONS KW - CHARGE transfer KW - Cyclohexane KW - Ethylcyclohexane KW - Ion–molecule reaction KW - Mass spectrometry KW - Methylcyclohexane N1 - Accession Number: 78151962; Jiao, C.Q. 1 Adams, S.F. 2; Email Address: steven.adams@wpafb.af.mil; Affiliation: 1: UES, Inc., Dayton, OH 45432-1894, United States 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7251, United States; Source Info: May2012, Vol. 321-322, p33; Subject Term: CYCLOHEXANE; Subject Term: GAS phase reactions; Subject Term: ION-molecule collisions; Subject Term: METHYL cyclohexane; Subject Term: HYDROCARBONS; Subject Term: CHARGE transfer; Author-Supplied Keyword: Cyclohexane; Author-Supplied Keyword: Ethylcyclohexane; Author-Supplied Keyword: Ion–molecule reaction; Author-Supplied Keyword: Mass spectrometry; Author-Supplied Keyword: Methylcyclohexane; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijms.2012.05.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78151962&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Goodhue, W. G. AU - Reeder, R. E. AU - Vineis, C. J. AU - Calawa, S. D. AU - Dauplaise, H. M. AU - Vangala, S. AU - Walsh, M. P. AU - Harman, T. C. T1 - High-output-power densities from molecular beam epitaxy grown n- and p-type PbTeSe-based thermoelectrics via improved contact metallization. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/05/15/ VL - 111 IS - 10 M3 - Article SP - 104501 PB - American Institute of Physics SN - 00218979 AB - Electrical power densities of up to 33 W/cm2 and up to 12 W/cm2 were obtained for n-type and p-type PbTeSe-based stand-alone thermoelectric devices, respectively, at modest temperature gradients of ∼200 °C (Tcold = 25 °C). These large power densities were enabled by greatly improving electrical contact resistivities in the thermoelectric devices. Electrical contacts with contact resistivities as low as 3.9 × 10-6 Ω cm2 and 4.0 × 10-6 Ω cm2 for n- and p-type telluride-based- materials, respectively, were developed by investigating several metallization schemes and contact layer doping/alloy combinations, in conjunction with a novel contact application process. This process exposes heated semiconductor surfaces to an atomic hydrogen flux under high vacuum for surface cleaning (oxide and carbon removal), followed immediately by an in-situ electron-beam evaporation of the metal layers. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR beam epitaxy KW - EPITAXY KW - MOLECULAR beams KW - THERMOELECTRICITY KW - SEMICONDUCTORS N1 - Accession Number: 76273256; Goodhue, W. G. 1,2 Reeder, R. E. 1 Vineis, C. J. 1 Calawa, S. D. 1 Dauplaise, H. M. 3 Vangala, S. 2 Walsh, M. P. 1 Harman, T. C. 1; Affiliation: 1: Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, Massachusetts 02420, 2: Photonics Center, University of Massachusetts Lowell, Lowell, Massachusetts 01854, 3: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA 01731; Source Info: May2012, Vol. 111 Issue 10, p104501; Subject Term: MOLECULAR beam epitaxy; Subject Term: EPITAXY; Subject Term: MOLECULAR beams; Subject Term: THERMOELECTRICITY; Subject Term: SEMICONDUCTORS; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.4712425 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76273256&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reed, A.N. AU - Lange, M.A. AU - Muratore, C. AU - Bultman, J.E. AU - Jones, J.G. AU - Voevodin, A.A. T1 - Pressure effects on HiPIMS deposition of hafnium films JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2012/05/15/ VL - 206 IS - 18 M3 - Article SP - 3795 EP - 3802 SN - 02578972 AB - Abstract: High power impulse magnetron sputtering (HiPIMS) was studied during the growth of hafnium films at argon pressures ranging from 0.80 to 5.33Pa with a fixed pulse length (50μs) and frequency (200Hz). The effect of inert gas pressure on the plasma conditions and film structure was investigated. The peak target current increased with pressure, but its sensitivity decreased above 2.00Pa, which corresponded to an increased ratio of ions to neutrals in the plasma. A comparison of plasma characteristics between Hf and Ti HiPIMS growth was made. In addition to pressure, the target currents were affected by the physical properties of the target material, particularly the secondary ionization energy and atomic mass. Sputtering gas rarefaction phenomena were found to be more pronounced for Hf, and as a result, the process characteristics and film properties had a strong interdependence on argon pressure discussed in this study. The microstructure of the hafnium films was analyzed with scanning electron microscopy and X-ray diffraction. When compared to Hf films deposited by dc magnetron sputtering, the HiPIMS process resulted in a decreased grain size and promoted the growth of the (100) orientation in the Hf films. These results demonstrate that Hf HiPIMS sputtering regimes have much stronger dependence on the working gas pressure compared to titanium, and these need to be taken into account to ensure that films are dense and have the desired morphology and crystallographic orientation. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC films KW - HAFNIUM KW - PRESSURE KW - MAGNETRON sputtering KW - COMPARATIVE studies KW - IONIZATION energy KW - PLASMA (Ionized gases) KW - Crystallographic orientation KW - Deposition parameters KW - Hafnium KW - HiPIMS KW - Pressure KW - Titanium N1 - Accession Number: 74497733; Reed, A.N. 1; Email Address: Amber.Reed@WPAFB.AF.MIL Lange, M.A. 1,2; Email Address: Matthew.Lange.ctr@WPAFB.AF.MIL Muratore, C. 1; Email Address: Christopher.Muratore@WPAFB.AF.MIL Bultman, J.E. 3; Email Address: John.Bultman.ctr@WPAFB.AF.MIL Jones, J.G. 1; Email Address: John.Jones@WPAFB.AF.MIL Voevodin, A.A. 1; Email Address: Andrey.Voevodin@WPAFB.AF.MIL; Affiliation: 1: Thermal Sciences and Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, 2941 Hobson Way, Wright-Patterson AFB, OH, 45433-7746, United States 2: Universal Technology Corporation, 1270 North Fairfield Drive, Dayton, OH, 45432, United States 3: University of Dayton Research Institute, 303 College Park, Dayton, OH, 45469, United States; Source Info: May2012, Vol. 206 Issue 18, p3795; Subject Term: METALLIC films; Subject Term: HAFNIUM; Subject Term: PRESSURE; Subject Term: MAGNETRON sputtering; Subject Term: COMPARATIVE studies; Subject Term: IONIZATION energy; Subject Term: PLASMA (Ionized gases); Author-Supplied Keyword: Crystallographic orientation; Author-Supplied Keyword: Deposition parameters; Author-Supplied Keyword: Hafnium; Author-Supplied Keyword: HiPIMS; Author-Supplied Keyword: Pressure; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.surfcoat.2012.03.045 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74497733&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Moon, J. S. AU - Antcliffe, M. AU - Seo, H. C. AU - Curtis, D. AU - Lin, S. AU - Schmitz, A. AU - Milosavljevic, I. AU - Kiselev, A. A. AU - Ross, R. S. AU - Gaskill, D. K. AU - Campbell, P. M. AU - Fitch, R. C. AU - Lee, K.-M. AU - Asbeck, P. T1 - Ultra-low resistance ohmic contacts in graphene field effect transistors. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/05/14/ VL - 100 IS - 20 M3 - Article SP - 203512 PB - American Institute of Physics SN - 00036951 AB - We report on an experimental demonstration of graphene-metal ohmic contacts with contact resistance below 100 Ω µm. These have been fabricated on graphene wafers, both with and without hydrogen intercalation, and measured using the transmission line method. Specific contact resistivities of 3 × 10-7 to 1.2 × 10-8 Ω cm2 have been obtained. The ultra-low contact resistance yielded short-channel (source-drain distance of 0.45 µm) HfO2/graphene field effect transistors (FETs) with a low on-resistance (Ron) of 550 Ω µm and a high current density of 1.7 A/mm at a source-drain voltage of 1 V. These values represent state-of-the-art (SOA) performance in graphene-metal contacts and graphene FETs. This ohmic contact resistance is comparable to that of SOA high-speed III-V high electron mobility transistors. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OHMIC contacts KW - GRAPHENE KW - FIELD-effect transistors KW - ELECTRIC lines KW - ELECTRIC resistance N1 - Accession Number: 75345067; Moon, J. S. 1 Antcliffe, M. 1 Seo, H. C. 1 Curtis, D. 1 Lin, S. 1 Schmitz, A. 1 Milosavljevic, I. 1 Kiselev, A. A. 1 Ross, R. S. 1 Gaskill, D. K. 2 Campbell, P. M. 2 Fitch, R. C. 3 Lee, K.-M. 4 Asbeck, P. 4; Affiliation: 1: HRL Laboratories, LLC, 3011 Malibu Canyon Road, Malibu, California 90265, 2: Naval Research Laboratory, 4555 Overlook Ave., SW, Washington, DC 20375, 3: Air Force Research Laboratory, 2241 Avionics Circle, Wright-Patterson AFB, Ohio 45433, 4: University of California at San Diego, 9500 Gilman Drive, La Jolla, California 92093,; Source Info: 5/14/2012, Vol. 100 Issue 20, p203512; Subject Term: OHMIC contacts; Subject Term: GRAPHENE; Subject Term: FIELD-effect transistors; Subject Term: ELECTRIC lines; Subject Term: ELECTRIC resistance; NAICS/Industry Codes: 238910 Site Preparation Contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.4719579 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75345067&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hermes, Eric D. A. AU - Wells, Timothy S. AU - Smith, Besa AU - Boyko, Edward J. AU - Gackstetter, Gary G. AU - Miller, Shannon C. AU - Smith, Tyler C. T1 - Smokeless tobacco use related to military deployment, cigarettes and mental health symptoms in a large, prospective cohort study among US service members. JO - Addiction JF - Addiction Y1 - 2012/05// VL - 107 IS - 5 M3 - Article SP - 983 EP - 994 PB - Wiley-Blackwell SN - 09652140 AB - ABSTRACT Aims To characterize smokeless tobacco initiation and persistence in relation to deployment, combat, occupation, smoking and mental health symptoms. Design Prospective cohort, utilizing self-reported survey data from the Millennium Cohort Study. Setting US military service members in all branches including active duty, reserve and National Guard. Participants Population-based sample of 45 272 participants completing both baseline (July 2001-June 2003; n = 77 047) and follow-up (June 2004-January 2006; n = 55 021) questionnaires (follow-up response rate = 71.4%). Measurements Self-reported smokeless tobacco initiation and persistence. Findings Over the study period, 72.4% did not deploy, 13.7% deployed without combat exposures and 13.9% deployed with combat exposures, while 1.9% were smokeless tobacco initiators and 8.9% were persistent users. The odds of initiation were greater for deployers with combat exposure [odds ratio (OR), 1.76; 95% confidence interval (CI), 1.49-2.09], deployers without combat exposure (OR, 1.31; 95% CI, 1.07-1.60) and those who deployed multiple times (OR, 1.67; 95% CI, 1.31-2.14), as well as in smoking recidivists/initiators (OR, 4.65; 95% CI, 3.82-5.66) and those reporting post-traumatic stress disorder symptoms (OR, 1.54; CI, 1.15-2.07). A similar pattern for higher odds of persistent use was observed for deployment and combat exposure, but not for smoking and mental health symptoms. Military occupation was not significantly associated with initiation or persistence. Conclusions Deployment and combat exposure in the US military are associated with increased risk of smokeless tobacco initiation and persistence while smoking and symptoms of post-traumatic stress disorder increase the odds for initiation. Research is needed on aspects of military service amenable to the reduction or prevention of tobacco consumption. [ABSTRACT FROM AUTHOR] AB - Copyright of Addiction is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MENTAL illness KW - CHI-squared test KW - CONFIDENCE intervals KW - EPIDEMIOLOGY KW - LONGITUDINAL method KW - POST-traumatic stress disorder KW - PSYCHOLOGICAL tests KW - QUESTIONNAIRES KW - RESEARCH -- Finance KW - SCALE analysis (Psychology) KW - SCALES (Weighing instruments) KW - SELF-evaluation KW - SMOKELESS tobacco KW - SMOKING KW - SOCIAL participation KW - MILITARY personnel -- Psychology KW - STATISTICS KW - STRESS (Psychology) KW - WAR KW - DATA analysis KW - MULTIPLE regression analysis KW - MILITARY service KW - DATA analysis -- Software KW - DESCRIPTIVE statistics KW - PSYCHOLOGICAL aspects KW - UNITED States KW - Afghanistan KW - Iraq war KW - military personnel KW - post-traumatic stress disorder KW - risk factors KW - smokeless tobacco KW - tobacco use disorder KW - veterans KW - war N1 - Accession Number: 74020750; Hermes, Eric D. A. 1 Wells, Timothy S. 2 Smith, Besa 2 Boyko, Edward J. 3 Gackstetter, Gary G. 4 Miller, Shannon C. 5,6,7 Smith, Tyler C. 2; Affiliation: 1: Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA, 2: Department of Deployment Health Research, Naval Health Research Center, San Diego, CA, USA, 3: Epidemiologic Research and Information Center (ERIC), VA Puget Sound, Seattle, WA, USA, 4: Analytic Services Inc., Arlington, VA, USA, 5: Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, USA, 6: Veterans Affairs Medical Center, Cincinnati, OH, USA 7: Center for Treatment, Research and Education in Addictive Disorders (CeTREAD), University of Cincinnati Department of Psychiatry and Behavioral Neuroscience, Cincinnati, OH, USA; Source Info: May2012, Vol. 107 Issue 5, p983; Subject Term: MENTAL illness; Subject Term: CHI-squared test; Subject Term: CONFIDENCE intervals; Subject Term: EPIDEMIOLOGY; Subject Term: LONGITUDINAL method; Subject Term: POST-traumatic stress disorder; Subject Term: PSYCHOLOGICAL tests; Subject Term: QUESTIONNAIRES; Subject Term: RESEARCH -- Finance; Subject Term: SCALE analysis (Psychology); Subject Term: SCALES (Weighing instruments); Subject Term: SELF-evaluation; Subject Term: SMOKELESS tobacco; Subject Term: SMOKING; Subject Term: SOCIAL participation; Subject Term: MILITARY personnel -- Psychology; Subject Term: STATISTICS; Subject Term: STRESS (Psychology); Subject Term: WAR; Subject Term: DATA analysis; Subject Term: MULTIPLE regression analysis; Subject Term: MILITARY service; Subject Term: DATA analysis -- Software; Subject Term: DESCRIPTIVE statistics; Subject Term: PSYCHOLOGICAL aspects; Subject Term: UNITED States; Author-Supplied Keyword: Afghanistan; Author-Supplied Keyword: Iraq war; Author-Supplied Keyword: military personnel; Author-Supplied Keyword: post-traumatic stress disorder; Author-Supplied Keyword: risk factors; Author-Supplied Keyword: smokeless tobacco; Author-Supplied Keyword: tobacco use disorder; Author-Supplied Keyword: veterans; Author-Supplied Keyword: war; NAICS/Industry Codes: 333990 All other general-purpose machinery manufacturing; NAICS/Industry Codes: 333997 Scale and Balance Manufacturing; NAICS/Industry Codes: 424940 Tobacco and Tobacco Product Merchant Wholesalers; NAICS/Industry Codes: 312220 Tobacco product manufacturing; NAICS/Industry Codes: 413310 Cigarette and tobacco product merchant wholesalers; NAICS/Industry Codes: 312230 Tobacco Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1111/j.1360-0443.2011.03737.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74020750&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eschleman, Kevin J. AU - Alarcon, Gene M. AU - Lyons, Joseph B. AU - Stokes, Charlene K. AU - Schneider, Tamera T1 - The dynamic nature of the stress appraisal process and the infusion of affect. JO - Anxiety, Stress & Coping JF - Anxiety, Stress & Coping Y1 - 2012/05// VL - 25 IS - 3 M3 - Article SP - 309 EP - 327 PB - Routledge SN - 10615806 AB - Very little is known about the process in which people reappraise a stressful environment or the factors that may influence this process. In the current study, we address the several limitations to previous research regarding stress reappraisals and explore the role of affect on this process. A total of 320 participants (mean age = 20 years, 60% male) completed an increasingly demanding team-based coordination task. Mood and stress appraisals were assessed at three time points using self-report surveys during four different waves of data collection. The longitudinal design enabled us to assess primary and secondary reappraisals (change in appraisals during the experiment), task-irrelevant affect (affect assessed prior to experiment participation), and task-relevant affect (change in affect experienced during the experiment). Guided by the Transactional Theory of Stress, we argue that the relationship between primary reappraisal and secondary reappraisal is an accurate representation of a dynamic stress appraisal process. We found that participants were more likely to engage in the stress appraisal process when they experienced less task-irrelevant positive affect and greater task-relevant positive affect. Both task-irrelevant and task-relevant negative affect were not found to influence the stress appraisal process. [ABSTRACT FROM AUTHOR] AB - Copyright of Anxiety, Stress & Coping is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRESS (Psychology) KW - POSITIVE & Negative Affect Schedule KW - PARTICIPATION KW - ACQUISITION of data KW - AFFECT (Psychology) KW - COOPERATION KW - appraisal KW - latent growth modeling KW - negative affect KW - positive affect KW - reappraisal KW - stress N1 - Accession Number: 73763242; Eschleman, Kevin J. 1,2; Email Address: kevin.eschleman@wright.edu Alarcon, Gene M. 1 Lyons, Joseph B. 1 Stokes, Charlene K. 1 Schneider, Tamera 2; Affiliation: 1: Air Force Research Laboratory, USA 2: Wright State University, USA; Source Info: May2012, Vol. 25 Issue 3, p309; Subject Term: STRESS (Psychology); Subject Term: POSITIVE & Negative Affect Schedule; Subject Term: PARTICIPATION; Subject Term: ACQUISITION of data; Subject Term: AFFECT (Psychology); Subject Term: COOPERATION; Author-Supplied Keyword: appraisal; Author-Supplied Keyword: latent growth modeling; Author-Supplied Keyword: negative affect; Author-Supplied Keyword: positive affect; Author-Supplied Keyword: reappraisal; Author-Supplied Keyword: stress; Number of Pages: 19p; Illustrations: 1 Diagram, 3 Charts, 1 Graph; Document Type: Article L3 - 10.1080/10615806.2011.601299 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73763242&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Siddiqui, Jeffrey J. AU - Phillips, Jamie D. AU - Leedy, Kevin AU - Bayraktaroglu, Burhan T1 - Bias-Temperature-Stress Characteristics of \ZnO/HfO2 Thin-Film Transistors. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices Y1 - 2012/05// VL - 59 IS - 5 M3 - Article SP - 1488 EP - 1493 SN - 00189383 AB - Positive and negative bias temperature instabilities (PBTI and NBTI) of \ZnO/HfO2 thin-film transistors are investigated by the bias-temperature-stress test method. PBTI results show a linear shift in threshold voltage in the positive voltage direction with a magnitude that semilogarithmically increases with time. This is indicative of dielectric charge trapping. Trends with stress voltage and temperature also support this conclusion. NBTI characteristics include threshold voltage shifts in the negative voltage direction, reduced channel mobility, and an increased subthreshold slope with temperature. The observed behavior suggests that defect state creation at the interface is the dominant mechanism responsible for NBTI. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN film transistors KW - ZINC oxide KW - HAFNIUM oxide KW - STRAINS & stresses (Mechanics) KW - TEMPERATURE measurements KW - THRESHOLD voltage KW - GATE array circuits KW - Bias-temperature-stress (BTS) KW - Dielectrics KW - Hafnium compounds KW - hafnium oxide (\HfO2) KW - Logic gates KW - negative bias temperature instability (NBTI) KW - positive bias temperature instability (PBTI) KW - Temperature KW - Temperature measurement KW - Thin film transistors KW - Zinc oxide KW - zinc oxide (ZnO) N1 - Accession Number: 74556261; Siddiqui, Jeffrey J. 1 Phillips, Jamie D. 1 Leedy, Kevin 2 Bayraktaroglu, Burhan 3; Affiliation: 1: Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA 2: Air Force Research Laboratory, AFRL/RYDD, WPAFB, Dayton, OH , USA 3: Air Force Research Laboratory, AFRL/RYDD, WPAFB, Dayton , OH, USA; Source Info: May2012, Vol. 59 Issue 5, p1488; Subject Term: THIN film transistors; Subject Term: ZINC oxide; Subject Term: HAFNIUM oxide; Subject Term: STRAINS & stresses (Mechanics); Subject Term: TEMPERATURE measurements; Subject Term: THRESHOLD voltage; Subject Term: GATE array circuits; Author-Supplied Keyword: Bias-temperature-stress (BTS); Author-Supplied Keyword: Dielectrics; Author-Supplied Keyword: Hafnium compounds; Author-Supplied Keyword: hafnium oxide (\HfO2); Author-Supplied Keyword: Logic gates; Author-Supplied Keyword: negative bias temperature instability (NBTI); Author-Supplied Keyword: positive bias temperature instability (PBTI); Author-Supplied Keyword: Temperature; Author-Supplied Keyword: Temperature measurement; Author-Supplied Keyword: Thin film transistors; Author-Supplied Keyword: Zinc oxide; Author-Supplied Keyword: zinc oxide (ZnO); NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TED.2012.2189048 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74556261&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wu, Yi AU - Cheng, Jian AU - Wang, Jinqiao AU - Lu, Hanqing AU - Wang, Jun AU - Ling, Haibin AU - Blasch, Erik AU - Bai, Li T1 - Real-Time Probabilistic Covariance Tracking With Efficient Model Update. JO - IEEE Transactions on Image Processing JF - IEEE Transactions on Image Processing Y1 - 2012/05// VL - 21 IS - 5 M3 - Article SP - 2824 EP - 2837 SN - 10577149 AB - The recently proposed covariance region descriptor has been proven robust and versatile for a modest computational cost. The covariance matrix enables efficient fusion of different types of features, where the spatial and statistical properties, as well as their correlation, are characterized. The similarity between two covariance descriptors is measured on Riemannian manifolds. Based on the same metric but with a probabilistic framework, we propose a novel tracking approach on Riemannian manifolds with a novel incremental covariance tensor learning (ICTL). To address the appearance variations, ICTL incrementally learns a low-dimensional covariance tensor representation and efficiently adapts online to appearance changes of the target with only \cal O(1) computational complexity, resulting in a real-time performance. The covariance-based representation and the ICTL are then combined with the particle filter framework to allow better handling of background clutter, as well as the temporary occlusions. We test the proposed probabilistic ICTL tracker on numerous benchmark sequences involving different types of challenges including occlusions and variations in illumination, scale, and pose. The proposed approach demonstrates excellent real-time performance, both qualitatively and quantitatively, in comparison with several previously proposed trackers. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Image Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANALYSIS of covariance KW - ROBUST control KW - DESCRIPTOR systems (Computer science) KW - MATRICES KW - RIEMANNIAN manifolds KW - COMPUTATIONAL complexity KW - PROBABILITY theory KW - Adaptation models KW - Covariance descriptor KW - Covariance matrix KW - Feature extraction KW - incremental learning KW - Manifolds KW - model update KW - particle filter KW - Riemannian manifolds KW - Target tracking KW - Tensile stress KW - visual tracking N1 - Accession Number: 74406218; Wu, Yi 1 Cheng, Jian 2 Wang, Jinqiao 2 Lu, Hanqing 2 Wang, Jun 3 Ling, Haibin 4 Blasch, Erik 5 Bai, Li 6; Affiliation: 1: School of Information and Control Engineering, Nanjing University of Information Science and Technology, Nanjing, China 2: Institute of Automation, Chinese Academy of Sciences, Beijing, China 3: Network Center, Nanjing University of Information Science and Technology, Nanjing, China 4: Department of Computer and Information Science, Temple University, Philadelphia, PA, USA 5: U.S. Air Force Research Laboratory (AFRL), AFRL/RYAA, WPAFB, OH, USA 6: Department of Electrical and Computer Engineering, Temple University, Philadelphia, PA, USA; Source Info: May2012, Vol. 21 Issue 5, p2824; Subject Term: ANALYSIS of covariance; Subject Term: ROBUST control; Subject Term: DESCRIPTOR systems (Computer science); Subject Term: MATRICES; Subject Term: RIEMANNIAN manifolds; Subject Term: COMPUTATIONAL complexity; Subject Term: PROBABILITY theory; Author-Supplied Keyword: Adaptation models; Author-Supplied Keyword: Covariance descriptor; Author-Supplied Keyword: Covariance matrix; Author-Supplied Keyword: Feature extraction; Author-Supplied Keyword: incremental learning; Author-Supplied Keyword: Manifolds; Author-Supplied Keyword: model update; Author-Supplied Keyword: particle filter; Author-Supplied Keyword: Riemannian manifolds; Author-Supplied Keyword: Target tracking; Author-Supplied Keyword: Tensile stress; Author-Supplied Keyword: visual tracking; Number of Pages: 14p; Document Type: Article L3 - 10.1109/TIP.2011.2182521 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74406218&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bernhardt, P. A. AU - Ballenthin, J. O. AU - Baumgardner, J. L. AU - Bhatt, A. AU - Boyd, I. D. AU - Burt, J. M. AU - Caton, R. G. AU - Coster, A. AU - Erickson, P. J. AU - Huba, J. D. AU - Earle, G. D. AU - Kaplan, C. R. AU - Foster, J. C. AU - Groves, K. M. AU - Haaser, R. A. AU - Heelis, R. A. AU - Hunton, D. E. AU - Hysell, D. L. AU - Klenzing, J. H. AU - Larsen, M. F. T1 - Ground and Space-Based Measurement of Rocket Engine Burns in the Ionosphere. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2012/05//5/1/2012 Part 1 Part 1 VL - 40 IS - 5 M3 - Article SP - 1267 EP - 1286 SN - 00933813 AB - On-orbit firings of both liquid and solid rocket motors provide localized disturbances to the plasma in the upper atmosphere. Large amounts of energy are deposited to ionosphere in the form of expanding exhaust vapors which change the composition and flow velocity. Charge exchange between the neutral exhaust molecules and the background ions (mainly \O^+) yields energetic ion beams. The rapidly moving pickup ions excite plasma instabilities and yield optical emissions after dissociative recombination with ambient electrons. Line-of-sight techniques for remote measurements rocket burn effects include direct observation of plume optical emissions with ground and satellite cameras, and plume scatter with UHF and higher frequency radars. Long range detection with HF radars is possible if the burns occur in the dense part of the ionosphere. The exhaust vapors initiate plasma turbulence in the ionosphere that can scatter HF radar waves launched from ground transmitters. Solid rocket motors provide particulates that become charged in the ionosphere and may excite dusty plasma instabilities. Hypersonic exhaust flow impacting the ionospheric plasma launches a low-frequency, electromagnetic pulse that is detectable using satellites with electric field booms. If the exhaust cloud itself passes over a satellite, in situ detectors measure increased ion-acoustic wave turbulence, enhanced neutral and plasma densities, elevated ion temperatures, and magnetic field perturbations. All of these techniques can be used for long range observations of plumes in the ionosphere. To demonstrate such long range measurements, several experiments were conducted by the Naval Research Laboratory including the Charged Aerosol Release Experiment, the Shuttle Ionospheric Modification with Pulsed Localized Exhaust experiments, and the Shuttle Exhaust Ionospheric Turbulence Experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ROCKET engines KW - IONOSPHERE KW - PLASMA (Ionized gases) KW - FLOW velocity KW - ION beams KW - Engines KW - Environmental factors KW - ionosphere KW - plasma measurements KW - plasma waves KW - Plasmas KW - Rockets KW - Spaceborne radar N1 - Accession Number: 75125899; Bernhardt, P. A. 1 Ballenthin, J. O. 2 Baumgardner, J. L. 3 Bhatt, A. 4 Boyd, I. D. 5 Burt, J. M. 5 Caton, R. G. 2 Coster, A. 4 Erickson, P. J. 4 Huba, J. D. 6 Earle, G. D. 7 Kaplan, C. R. 8 Foster, J. C. 9 Groves, K. M. 2 Haaser, R. A. 7 Heelis, R. A. 7 Hunton, D. E. 2 Hysell, D. L. 10 Klenzing, J. H. 7 Larsen, M. F. 11; Affiliation: 1: Plasma Physics Division, Naval Research Laboratory, Washington , DC, USA 2: Air Force Research Laboratory, Kirtland AFB, NM, USA 3: Center for Space Physics, Boston University, Boston, MA, USA 4: MIT Haystack Observatory, Westford, MA, USA 5: University of Michigan, Ann Arbor, USA 6: Plasma Physics Division, Naval Research Laboratory, Washington, DC , USA 7: University of Texas at Dallas, Richardson, TX, USA 8: Laboratory for Computational Physics and Fluid Dynamics, Naval Research Laboratory, Washington, DC, USA 9: MIT Haystack Observatory, Westford0, MA, USA 10: Cornell University, Ithaca, USA 11: Department of Physics and Astronomy, Clemson University, Clemson, NC, USA; Source Info: 5/1/2012 Part 1 Part 1, Vol. 40 Issue 5, p1267; Subject Term: ROCKET engines; Subject Term: IONOSPHERE; Subject Term: PLASMA (Ionized gases); Subject Term: FLOW velocity; Subject Term: ION beams; Author-Supplied Keyword: Engines; Author-Supplied Keyword: Environmental factors; Author-Supplied Keyword: ionosphere; Author-Supplied Keyword: plasma measurements; Author-Supplied Keyword: plasma waves; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Rockets; Author-Supplied Keyword: Spaceborne radar; Number of Pages: 20p; Document Type: Article L3 - 10.1109/TPS.2012.2185814 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75125899&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Caton, M.J. AU - John, R. AU - Porter, W.J. AU - Burba, M.E. T1 - Stress ratio effects on small fatigue crack growth in Ti–6Al–4V JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2012/05// VL - 38 M3 - Article SP - 36 EP - 45 SN - 01421123 AB - Abstract: A systematic study of the effects of stress ratio on small fatigue crack growth in Ti–6Al–4V was conducted. Cylindrical fatigue specimens were tested axially at room temperature under a maximum stress of 690MPa and with stress ratios (R) of 0.5, 0.1, and −1. Tests were periodically interrupted and a standard replication technique was used to monitor the growth of cracks artificially initiated from 30 to 40μm micro-notches, which were milled into the specimen surface with a focused ion beam (FIB). Measurement of striation spacing from fracture surfaces was evaluated for determining small crack growth rates and showed good agreement with replication data, but is only possible for relatively high stress intensity factor ranges, ΔK, on the order of 10MPa√m or greater. A significant small crack effect is observed in this alloy, consistent with previous observations, where small cracks grew at stress intensity factor ranges below the long crack threshold and at higher rates than long cracks for equivalent ΔK levels. While a modest effect of stress ratio is seen on small crack growth rates when plotted as a function of crack size (faster growth at lower mean stresses for a given maximum stress), no discernable effect of R is seen when plotting as a function of ΔK. Significant scatter is observed in the small crack growth rates, and the implications of data reduction methods are discussed. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Fatigue KW - STRAINS & stresses (Mechanics) KW - FRACTURE mechanics KW - TITANIUM-aluminum-vanadium alloys KW - TEMPERATURE effect KW - NOTCH effect KW - SURFACES (Technology) KW - Fatigue KW - Propagation KW - Small crack KW - Stress ratio KW - Titanium N1 - Accession Number: 71252148; Caton, M.J. 1; Email Address: michael.caton@wpafb.af.mil John, R. 1 Porter, W.J. 2 Burba, M.E. 3; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory (AFRL/RXLMN), Wright-Patterson AFB, OH 45433-7817, USA 2: University of Dayton Research Institute, Dayton, OH 45469-0020, USA 3: Central State University, Wilberforce, OH 45384, USA; Source Info: May2012, Vol. 38, p36; Subject Term: METALS -- Fatigue; Subject Term: STRAINS & stresses (Mechanics); Subject Term: FRACTURE mechanics; Subject Term: TITANIUM-aluminum-vanadium alloys; Subject Term: TEMPERATURE effect; Subject Term: NOTCH effect; Subject Term: SURFACES (Technology); Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Propagation; Author-Supplied Keyword: Small crack; Author-Supplied Keyword: Stress ratio; Author-Supplied Keyword: Titanium; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijfatigue.2011.11.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71252148&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Avalos, Javier AU - Swenson, Eric D. AU - Mignolet, Marc P. AU - Lindsley, Ned J. T1 - Stochastic Modeling of Structural Uncertainty/Variability from Ground Vibration Modal Test Data. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2012/05//May/Jun2012 VL - 49 IS - 3 M3 - Article SP - 870 EP - 884 SN - 00218669 AB - The focus of this investigation is on the formulation and validation of a methodology for the estimation of a stochastic linear modal model of a structure from measurements of a few of its natural frequencies and mode shapes on a few nominally identical samples of the structure. The basis for the modal model is composed of the modes of an approximate representation of the structure, e.g., a nonupdated or preliminary finite element model. Furthermore, the variability or uncertainty in the structure is assumed to originate from stiffness properties (e.g., Young's modulus, boundary conditions, attachment conditions) so that the mass matrix of the uncertain linear modal model is identity but the corresponding stiffness matrix is random. The nonparametric stochastic modeling approach is adopted here for the representation of this latter matrix; thus, the quantities to be estimated are the mean stiffness matrix and the uncertainty level. This effort is accomplished using the maximum likelihood framework using both natural frequencies and mode shapes data. The successful application of this approach to data from the Air Force Institute of Technology joined wing is demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STOCHASTIC processes KW - FINITE element method KW - BOUNDARY value problems KW - AIRPLANE wings KW - ELASTICITY KW - MAXIMUM likelihood statistics N1 - Accession Number: 77843538; Avalos, Javier 1,2 Swenson, Eric D. 3 Mignolet, Marc P. 1,4 Lindsley, Ned J. 5; Affiliation: 1: Arizona State University, Tempe, Arizona 85287-6106 2: Member AIAA 3: Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433 4: Associate Fellow AIAA 5: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7531; Source Info: May/Jun2012, Vol. 49 Issue 3, p870; Subject Term: STOCHASTIC processes; Subject Term: FINITE element method; Subject Term: BOUNDARY value problems; Subject Term: AIRPLANE wings; Subject Term: ELASTICITY; Subject Term: MAXIMUM likelihood statistics; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 15p; Document Type: Article L3 - 10.2514/1.C031546 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77843538&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - MacDonald, N. A. AU - Young, C. V. AU - Cappelli, M. A. AU - Hargus, W. A. T1 - Ion velocity and plasma potential measurements of a cylindrical cusped field thruster. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/05// VL - 111 IS - 9 M3 - Article SP - 093303 EP - 093303-7 PB - American Institute of Physics SN - 00218979 AB - Measurements of the most probable time-averaged axial ion velocities and plasma potential within the acceleration channel and in the plume of a straight-channeled cylindrical cusped field thruster operating on xenon are presented. Ion velocities for the thruster are derived from laser-induced fluorescence measurements of the 5d[4]7/2-6p[3]5/2 xenon ion excited state transition centered at λ=834.72nm. Plasma potential measurements are made using a floating emissive probe with a thoriated-tungsten filament. The thruster is operated in a power matched condition with 300 V applied anode potential for comparison to previous krypton plasma potential measurements, and a low power condition with 150 V applied anode potential. Correlations are seen between the plasma potential drop outside of the thruster and kinetic energy contours of the accelerating ions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONS -- Migration & velocity KW - XENON KW - KRYPTON KW - PLASMA (Ionized gases) KW - PLASMA instabilities N1 - Accession Number: 75231038; MacDonald, N. A. 1 Young, C. V. 1 Cappelli, M. A. 1 Hargus, W. A. 2; Affiliation: 1: Stanford Plasma Physics Laboratory, Stanford University, Stanford, California 94305, 2: Spacecraft Propulsion Branch, Air Force Research Laboratory, Edwards AFB, California 93524,; Source Info: May2012, Vol. 111 Issue 9, p093303; Subject Term: IONS -- Migration & velocity; Subject Term: XENON; Subject Term: KRYPTON; Subject Term: PLASMA (Ionized gases); Subject Term: PLASMA instabilities; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.4707953 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75231038&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Altfeder, Igor AU - Krim, Jacqueline T1 - Temperature dependence of nanoscale friction for Fe on YBCO. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/05// VL - 111 IS - 9 M3 - Article SP - 094916 EP - 094916-6 PB - American Institute of Physics SN - 00218979 AB - A magnetic probe microscopy study of levitation and atomic-scale friction is reported for Fe on YBCO (Tc = 92.5 K) in the temperature range 65-293 K. Below Tc, the friction coefficient is constant and exhibits no correlation with the strength of superconducting levitation forces. Above Tc, the friction coefficient increases progressively, and nearly doubles between Tc and room temperature. The results are discussed within the context of the underlying atomic-scale electronic and phononic mechanisms that give rise to friction, and it is concluded that contact electrification and static electricity may play a significant role in the non-superconducting phase. Given that the properties of YBCO can be finely tuned, the results point the way to a variety of interesting studies of friction and superconductors. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSCOPY KW - MAGNETIC suspension KW - YTTRIUM barium copper oxide KW - FRICTION KW - SUPERCONDUCTORS N1 - Accession Number: 75231020; Altfeder, Igor 1 Krim, Jacqueline 2; Affiliation: 1: Thermal Sciences and Materials Branch, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 2: Physics Department, North Carolina State University, Raleigh, North Carolina 27695,; Source Info: May2012, Vol. 111 Issue 9, p094916; Subject Term: MICROSCOPY; Subject Term: MAGNETIC suspension; Subject Term: YTTRIUM barium copper oxide; Subject Term: FRICTION; Subject Term: SUPERCONDUCTORS; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.4717983 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75231020&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baird, Leemon AU - Fagin, Barry T1 - Conserved Energy Functions for Cellular Automata: Finding Nontrivials Faster Through a Complete Theory of the Trivials. JO - Journal of Cellular Automata JF - Journal of Cellular Automata Y1 - 2012/05// VL - 7 IS - 3 M3 - Article SP - 115 EP - 150 SN - 15575969 AB - Conserved quantities indicate fundamental physical properties of systems, and are therefore eagerly sought after in science. Conservation of energy and conservation of angular momentum, for example, are two fundamental principles that offer profound insights into the nature of the world we live in. Cellular automata, as models of physical systems, can exhibit conserved functions of relevance to the system under study. Number conservation is a simple example, but far more sophisticated ones can be discovered with appropriate algorithmic techniques. Cellular automata with identical conserved functions are, in some sense, closely related to one another. Thus conserved functions can be used to classify cellular automata, and to identify connections between seemingly unrelated systems. There are known algorithms to find all conserved energy functions of a given order for a given cellular automaton. They are exponentially slow, but can be made faster by eliminating the trivial conserved functions that classify all states as having the same energy. So we must find the basis set for the trivials. That problem is nontrivial. We present here the first proofs for the basis set for all trivial conserved functions in the general case, and use this to derive a number of optimizations for reducing time and memory for the discovery of nontrivials. We use these results to show the Game of Life has no nontrivials with any rectangular energy window containing 13 or fewer cells. Other 2D automata, however, do have nontrivials. We give the complete list of those functions for all life-like automata (i.e. 2D, 2-color, 3 x 3 neighborhood, outer totalistic) with rectangular energy windows with 9 or fewer cells, and discuss patterns we have observed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Cellular Automata is the property of Old City Publishing, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CELLULAR automata KW - PARALLEL processing (Electronic computers) KW - ENERGY conservation KW - PATTERN recognition systems KW - ALGORITHMS KW - automata KW - cellular KW - conserved KW - dimensions KW - energy KW - function KW - nontrivial KW - tensors KW - trivial N1 - Accession Number: 75379239; Baird, Leemon 1; Email Address: Leemon@Leemon.com Fagin, Barry 2; Email Address: barry.fagin@usafa.edu; Affiliation: 1: Geometric Modeling and Scientific Visualization Research Center 2: Department of Computer Science, US Air Force Academy Colorado Springs, Colorada USA 80840; Source Info: 2012, Vol. 7 Issue 3, p115; Subject Term: CELLULAR automata; Subject Term: PARALLEL processing (Electronic computers); Subject Term: ENERGY conservation; Subject Term: PATTERN recognition systems; Subject Term: ALGORITHMS; Author-Supplied Keyword: automata; Author-Supplied Keyword: cellular; Author-Supplied Keyword: conserved; Author-Supplied Keyword: dimensions; Author-Supplied Keyword: energy; Author-Supplied Keyword: function; Author-Supplied Keyword: nontrivial; Author-Supplied Keyword: tensors; Author-Supplied Keyword: trivial; Number of Pages: 36p; Illustrations: 5 Diagrams, 2 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75379239&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O. AU - Scott, J. AU - Senkova, S. AU - Meisenkothen, F. AU - Miracle, D. AU - Woodward, C. T1 - Microstructure and elevated temperature properties of a refractory TaNbHfZrTi alloy. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2012/05// VL - 47 IS - 9 M3 - Article SP - 4062 EP - 4074 PB - Springer Science & Business Media B.V. SN - 00222461 AB - Compression properties of a refractory multi-component alloy, TaNbHfZrTi, were determined in the temperature range of 296-1473 K and strain rate range of 10-10 s. The properties were correlated with the microstructure developed during compression testing. The alloy was produced by vacuum arc melting, and it was hot isostatically pressed (HIPd) and homogenized at 1473 K for 24 h prior to testing. It had a single-phase body-centered cubic structure with the lattice parameter a = 340.4 pm. The grain size was in the range of 100-200 μm. During compression at a strain rate of έ = 10 s, the alloy had the yield strength of 929 MPa at 296 K, 790 MPa at 673 K, 675 MPa at 873 K, 535 MPa at 1073 K, 295 MPa at 1273 K and 92 MPa at 1473 K. Continuous strain hardening and good ductility (ε ≥ 50%) were observed in the temperature range from 296 to 873 K. Deformation at T = 1073 K and έ ≥ 10 s was accompanied by intergranular cracking and cavitation, which was explained by insufficient dislocation and diffusion mobility to accommodate grain boundary sliding activated at this temperature. The intergranular cracking and cavitation disappeared with an increase in the deformation temperature to 1273 and 1473 K or a decrease in the strain rate to ~10 s. At these high temperatures and/or low-strain rates the alloy deformed homogeneously and showed steady-state flow at a nearly constant flow stress. Partial dynamic recrystallization, leading to formation of fine equiaxed grains near grain boundaries, was observed in the specimens deformed at 1073 and 1273 K and completed dynamic recrystallization was observed at 1473 K. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS science research KW - MICROSTRUCTURE KW - ALLOYS KW - THERMAL properties KW - HEAT resistant alloys KW - MATERIALS -- Compression testing N1 - Accession Number: 71670073; Senkov, O.; Email Address: oleg.senkov@wpafb.af.mil Scott, J. Senkova, S. Meisenkothen, F. Miracle, D. 1 Woodward, C. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base 45433 USA; Source Info: May2012, Vol. 47 Issue 9, p4062; Subject Term: MATERIALS science research; Subject Term: MICROSTRUCTURE; Subject Term: ALLOYS; Subject Term: THERMAL properties; Subject Term: HEAT resistant alloys; Subject Term: MATERIALS -- Compression testing; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 13p; Illustrations: 8 Black and White Photographs, 3 Charts, 5 Graphs; Document Type: Article L3 - 10.1007/s10853-012-6260-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71670073&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Atkinson, Michael AU - Poggie, Jonathan AU - Camberos, José T1 - Hypersonic Flow Computations for an Elliptic Cone at High Angle of Incidence. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2012/05//May/Jun2012 VL - 49 IS - 3 M3 - Article SP - 496 EP - 506 SN - 00224650 AB - A numerical investigation was conducted of a blunt-nosed elliptic cone in hypersonic, laminar flow. The geometry and test conditions were selected for comparison with experiments: a 2:1 blunt elliptic cone at a Mach number of 14.5, Reynolds number based on length of 36,000, and angles of attack ranging from 0 to 60 deg. Nonequilibrium flow calculations were carried out using an unstructured-grid Navier--Stokes code. The computations generally captured the trends in the experimental data, but tended to overestimate the magnitude of the wall pressure by 5-25% and the heat flux by 25-35%. The computations showed the largest overprediction on the windward side and leading edge and the smallest overprediction on the leeward side. Detailed examination of the leeward-side flow structure showed massive leeward-side separation with detached vortices. Primary/secondary vortices and embedded shock waves appeared above an angle of attack of 30 deg. Corresponding minima were observed in the surface pressure and heat flux on the leeward side of the cone. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERSONIC aerodynamics KW - LAMINAR flow KW - MACH number KW - REYNOLDS number KW - NAVIER-Stokes equations KW - HEAT flux N1 - Accession Number: 76599132; Atkinson, Michael 1 Poggie, Jonathan 1 Camberos, José 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: May/Jun2012, Vol. 49 Issue 3, p496; Subject Term: HYPERSONIC aerodynamics; Subject Term: LAMINAR flow; Subject Term: MACH number; Subject Term: REYNOLDS number; Subject Term: NAVIER-Stokes equations; Subject Term: HEAT flux; Number of Pages: 11p; Document Type: Article L3 - 10.2514/1.A32062 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76599132&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bagley, Zachary C. AU - Hughes, David H. AU - Juarez, Juan C. AU - Kolodzy, Paul AU - Martin, Todd AU - Northcott, Malcolm AU - Pike, H. Alan AU - Plasson, Ned D. AU - Stadler, Brian AU - Stotts, Larry B. AU - Young, David W. T1 - Hybrid optical radio frequency airborne communications. JO - Optical Engineering JF - Optical Engineering Y1 - 2012/05// VL - 51 IS - 5 M3 - Article SP - 1 EP - 25 SN - 00913286 AB - Optical RF Communications Adjunct Program flight test results provide validation of the theoretical models and hybrid optical radio frequency (RF) airborne system concepts developed by the Defense Advanced Research Projects Agency and the U.S. Air Force Research Laboratory. Theoretical models of the free-space optical communications (FSOC), RF, and network components accurately predict the flight test results under a wide range of day and night operating conditions. The FSOC system, including the adaptive optics and optical modem, can operate under high turbulence conditions. The RF and network mechanisms of Layer 2 retransmission and failover provide increased reliability, reducing end-to-end packet error rates. Overall the test results show that stable, long-range FSOC is possible and practical for near-term operations. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL communications -- Research KW - RADIO frequency KW - RESEARCH KW - OPTICAL radiometry KW - ADAPTIVE optics KW - LASER optical pulse KW - ATMOSPHERIC optics KW - adaptive optics KW - atmospheric optics KW - lasers KW - optical communications N1 - Accession Number: 98628906; Bagley, Zachary C. 1 Hughes, David H. 2 Juarez, Juan C. 3 Kolodzy, Paul 4 Martin, Todd 5 Northcott, Malcolm 6 Pike, H. Alan 7 Plasson, Ned D. 8 Stadler, Brian 9 Stotts, Larry B. 10; Email Address: lbstotts@gmail.com Young, David W. 3; Affiliation: 1: Advanced Comm. and DSP Group, L-3 Communications, CSW, 640 North 2200 West, Salt Lake City, Utah 84116 2: AFRL/RIGE 525 Brooks Road, Rome, New York 13441 3: Johns Hopkins University Applied Physics Lab, 11100 Johns Hopkins Road, M/S 1-E168, Laurel, Maryland 20723-6099 4: Kolodzy Consulting, P.O. Box 1443, Centreville, Virginia 20120 5: Science and Technology Associates, Inc., Suite 900, 4100 N Fairfax Drive, Arlington, Virginia 22203 6: AOptix Technologies, Inc., 695 Campbell Technology Parkway, Campbell, California 95008 7: Defense Strategies and Systems, Inc., 593 Greenfield Road, Front Royal, Virginia 22630 8: Fusion-io, 2855 E. Cottonwood Parkway, Suite 100, Salt Lake City, Utah 84121 9: Air Force Research Laboratory, AFRL/RYJM, 3109 Hobson Way B622 Area B, Wright-Patterson AFB, Ohio 45433-7700 10: Stotts Consulting, P.O. Box 3127, Merrifield, Virginia 22116-3127; Source Info: May2012, Vol. 51 Issue 5, p1; Subject Term: OPTICAL communications -- Research; Subject Term: RADIO frequency; Subject Term: RESEARCH; Subject Term: OPTICAL radiometry; Subject Term: ADAPTIVE optics; Subject Term: LASER optical pulse; Subject Term: ATMOSPHERIC optics; Author-Supplied Keyword: adaptive optics; Author-Supplied Keyword: atmospheric optics; Author-Supplied Keyword: lasers; Author-Supplied Keyword: optical communications; Number of Pages: 25p; Document Type: Article L3 - 10.1117/1.OE.51.5.055006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98628906&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shade, Paul A. AU - Kim, Sang-Lan AU - Wheeler, Robert AU - Uchic, Michael D. T1 - Stencil mask methodology for the parallelized production of microscale mechanical test samples. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2012/05// VL - 83 IS - 5 M3 - Article SP - 053903 PB - American Institute of Physics SN - 00346748 AB - A new methodology to parallelize the production of micromechanical test samples from bulk materials is reported. This methodology has been developed to produce samples with typical gage dimensions on the order of 20-200 μm, and also to minimize the reliance on conventional focused ion beam fabrication methods. The fabrication technique uses standard microelectronic process methods such as photolithography and deep-reactive ion etching to create high aspect ratio patterned templates-stencil masks-from a silicon wafer. In the present work, the stencil mask pattern consists of a linear row of tensile samples, where one grip of each sample is integrally attached to the bulk substrate. Once fabricated, the stencil mask is placed on top of a pre-thinned substrate, and the pattern and substrate are co-sputtered using a broad ion beam milling system, which ultimately results in the transfer of the mask pattern into the substrate. The methodology is demonstrated using a Si stencil mask and a polycrystalline Ni foil to manufacture an array of metallic micro-tensile samples. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROMECHANICS KW - LASER beams KW - SEMICONDUCTOR wafers KW - TENSILE strength KW - POLYCRYSTALS N1 - Accession Number: 76273392; Shade, Paul A. 1 Kim, Sang-Lan 2 Wheeler, Robert 2 Uchic, Michael D. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, AFRL/RXLM, Wright-Patterson AFB, Ohio 45433, 2: UES, Inc., 4401 Dayton-Xenia Rd., Dayton, Ohio 45432,; Source Info: May2012, Vol. 83 Issue 5, p053903; Subject Term: MICROMECHANICS; Subject Term: LASER beams; Subject Term: SEMICONDUCTOR wafers; Subject Term: TENSILE strength; Subject Term: POLYCRYSTALS; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 6p; Illustrations: 3 Black and White Photographs, 1 Graph; Document Type: Article L3 - 10.1063/1.4720944 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76273392&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Jonghoon AU - Varshney, Vikas AU - Brown, Joshua S. AU - Roy, Ajit K. AU - Farmer, Barry L. T1 - Single mode phonon scattering at carbon nanotube-graphene junction in pillared graphene structure. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/04/30/ VL - 100 IS - 18 M3 - Article SP - 183111 PB - American Institute of Physics SN - 00036951 AB - Phonon scattering at the carbon nanotube-graphene interface is studied in the pillared graphene structure, using the phonon wave packet method. Qualitatively different scattering characteristics, compared to previous studies of carbon nanotube systems, are observed. The phonon group velocity, dictating the energy transmission in simple carbon nanotube systems, is found to play an insignificant role. Distributing the incoming phonon energy to both sides of the interface more or less equally, the graphene interface provides a strong diffusive scattering site, which features a microscopic understanding of the decisive role of junction on the thermal transport in the pillared graphene hierarchical structure. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHONONS -- Scattering KW - CARBON nanotubes KW - GRAPHENE KW - WAVE packets KW - MOLECULAR dynamics N1 - Accession Number: 74978637; Lee, Jonghoon 1,2 Varshney, Vikas 1,2 Brown, Joshua S. 3 Roy, Ajit K. 1 Farmer, Barry L. 4; Affiliation: 1: Thermal Sciences and Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, 2: Universal Technology Corporation, 1270 N. Fairfield Rd., Dayton, Ohio 45432, 3: College of Engineering and Science, Louisiana Tech. University, Ruston, Louisiana 71272, 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: 4/30/2012, Vol. 100 Issue 18, p183111; Subject Term: PHONONS -- Scattering; Subject Term: CARBON nanotubes; Subject Term: GRAPHENE; Subject Term: WAVE packets; Subject Term: MOLECULAR dynamics; Number of Pages: 4p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.4711206 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74978637&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Akdim, B. AU - Pachter, R. AU - Day, P. N. AU - Kim, S. S. AU - Naik, R. R. T1 - On modeling biomolecular-surface nonbonded interactions: application to nucleobase adsorption on single-wall carbon nanotube surfaces. JO - Nanotechnology JF - Nanotechnology Y1 - 2012/04/27/ VL - 23 IS - 16 M3 - Article SP - 1 EP - 6 SN - 09574484 AB - In this work we explored the selectivity of single nucleobases towards adsorption on chiral single-wall carbon nanotubes (SWCNTs) by density functional theory calculations. Specifically, the adsorption of molecular models of guanine (G), adenine (A), thymine (T), and cytosine (C), as well as of AT and GC Watson-Crick (WC) base pairs on chiral SWCNT C(6, 5), C(9, 1) and C(8, 3) model structures, was analyzed in detail. The importance of correcting the exchange-correlation functional for London dispersion was clearly demonstrated, yet limitations in modeling such interactions by considering the SWCNT as a molecular model may mask subtle effects in a molecular-macroscopic material system. The trend in the calculated adsorption energies of the nucleobases on same diameter C(6, 5) and C(9, 1) SWCNT surfaces, i.e. G > A > T > C, was consistent with related computations and experimental work on graphitic surfaces, however contradicting experimental data on the adsorption of single-strand short homo-oligonucleotides on SWCNTs that demonstrated a trend of G > C > A > T (Albertorio et al 2009 Nanotechnology 20 395101). A possible role of electrostatic interactions in this case was partially captured by applying the effective fragment potential method, emphasizing that the interplay of the various contributions in modeling nonbonded interactions is complicated by theoretical limitations. Finally, because the calculated adsorption energies for Watson-Crick base pairs have shown little effect upon adsorption of the base pair farther from the surface, the results on SWCNT sorting by salmon genomic DNA could be indicative of partial unfolding of the double helix upon adsorption on the SWCNT surface. [ABSTRACT FROM AUTHOR] AB - Copyright of Nanotechnology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - ADSORPTION KW - CHIRALITY KW - DENSITY functionals KW - NUMERICAL calculations KW - MOLECULAR models KW - GUANINE N1 - Accession Number: 74236213; Akdim, B. 1,2; Email Address: Brahim.Akdim@wpafb.af.mil Pachter, R. 1; Email Address: Ruth.Pachter@wpafb.af.mil Day, P. N. 1,2 Kim, S. S. 1,3 Naik, R. R. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 2: General Dynamics Information Technology, Incorporated, Dayton OH 45433, USA 3: UES, Incorporated, Dayton OH 45433, USA; Source Info: 4/27/2012, Vol. 23 Issue 16, p1; Subject Term: CARBON nanotubes; Subject Term: ADSORPTION; Subject Term: CHIRALITY; Subject Term: DENSITY functionals; Subject Term: NUMERICAL calculations; Subject Term: MOLECULAR models; Subject Term: GUANINE; Number of Pages: 6p; Document Type: Article L3 - 10.1088/0957-4484/23/16/165703 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74236213&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chamberlain, Jeffrey W. AU - Maurer, Karl AU - Cooper, John AU - Lyon, Wanda J. AU - Danley, David L. AU - Ratner, Daniel M. T1 - Microelectrode array biosensor for studying carbohydrate-mediated interactions JO - Biosensors & Bioelectronics JF - Biosensors & Bioelectronics Y1 - 2012/04/15/ VL - 34 IS - 1 M3 - Article SP - 253 EP - 260 SN - 09565663 AB - Abstract: Carbohydrate-mediated host-pathogen interactions are essential to bacterial and viral pathogenesis, and represent an attractive target for the development of antiadhesives to prevent infection. We present a versatile microelectrode array-based platform to investigate carbohydrate-mediated protein and bacterial binding, with the objective of developing a generalizable method for screening inhibitors of host-microbe interactions. Microelectrode arrays are well suited for interrogating biological binding events, including proteins and whole-cells, and are amenable to electrochemical derivitization, facilitating rapid deposition of biomolecules. In this study, we achieve microelectrode functionalization with carbohydrates via controlled polymerization of pyrrole to individual microelectrodes, followed by physisorption of neoglycoconjugates to the polypyrrole-coated electrodes. Bioactivity of the immobilized carbohydrates was confirmed with carbohydrate-binding proteins (lectins) detected by both fluorescent and electrochemical means. The platform''s ability to analyze whole-cell binding was demonstrated using strains of Escherichia coli and Salmonella enterica, and the dose-dependent inhibition of S. enterica by a soluble carbohydrate antiadhesive. [Copyright &y& Elsevier] AB - Copyright of Biosensors & Bioelectronics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTRODES KW - BIOSENSORS KW - CARBOHYDRATES KW - HOST-parasite relationships KW - PROTEIN binding KW - ELECTROCHEMISTRY KW - ESCHERICHIA coli KW - Biosensor KW - Carbohydrate KW - CustomArray KW - Microelectrode array KW - Polypyrrole N1 - Accession Number: 73761566; Chamberlain, Jeffrey W. 1; Email Address: jeffwc@uw.edu Maurer, Karl 2; Email Address: maurer.karl@gmail.com Cooper, John 2; Email Address: jcooper@customarrayinc.com Lyon, Wanda J. 3; Email Address: wanda.lyon@wpafb.af.mil Danley, David L. 2; Email Address: ddanley@sprintmail.com Ratner, Daniel M. 1; Email Address: dratner@uw.edu; Affiliation: 1: Department of Bioengineering, University of Washington, Box 355061, Seattle, WA 98195, USA 2: CombiMatrix, 310 Goddard, Suite 150, Irvine, CA 92618, USA 3: Air Force Research Laboratory, Wright Patterson Air Force Base, 2510 Fifth Street, Area B B840, Dayton, OH 45433, USA; Source Info: Apr2012, Vol. 34 Issue 1, p253; Subject Term: MICROELECTRODES; Subject Term: BIOSENSORS; Subject Term: CARBOHYDRATES; Subject Term: HOST-parasite relationships; Subject Term: PROTEIN binding; Subject Term: ELECTROCHEMISTRY; Subject Term: ESCHERICHIA coli; Author-Supplied Keyword: Biosensor; Author-Supplied Keyword: Carbohydrate; Author-Supplied Keyword: CustomArray; Author-Supplied Keyword: Microelectrode array; Author-Supplied Keyword: Polypyrrole; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.bios.2012.02.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73761566&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patra, Nimai C. AU - Bharatan, Sudhakar AU - Li, Jia AU - Tilton, Michael AU - Iyer, Shanthi T1 - Molecular beam epitaxial growth and characterization of InSb1 - xNx on GaAs for long wavelength infrared applications. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/04/15/ VL - 111 IS - 8 M3 - Article SP - 083104 PB - American Institute of Physics SN - 00218979 AB - Recent research progress and findings in InSbN have attracted great attention due to its use in long wavelength infrared applications. A large bandgap reduction in InSb resulting from high N incorporation with minimal crystal defects is challenging due to relatively small atomic size of N. Hence optimization of growth conditions plays an important role in the growth of high-quality InSbN epilayers for device purposes. In this paper, we report on the correlation of structural, vibrational, electrical, and optical properties of molecular beam epitaxially grown InSbN epilayers grown on GaAs substrates, as a function of varying growth temperatures. Two dimensional growths of InSb and InSbN were confirmed from dynamic reflection high energy electron diffraction patterns and growth parameters were optimized. High crystalline quality of the epilayers is attested to by a low full width at half maximum of 200 arcsec from high resolution x-ray diffraction (HRXRD) scans and by the high intensity and well-resolved InSb longitudinal optical (LO) and 2nd order InSb LO mode observed from micro-Raman spectroscopy. The N incorporation in these InSbN epilayers is estimated to be 1.4% based on HRXRD simulation. X-ray photoelectron spectroscopy (XPS) studies reveal that most of the N present in the layers are in the form of In-N bonding. Variation of the lattice disorder with growth temperature is correlated with the types of N bonding present, the carrier concentration and mobility, observed in the corresponding XPS spectra and Hall measurements, respectively. XPS analysis, HRXRD scans, and Raman spectral analysis indicate that lower growth temperature favors In-N bonding which dictates N incorporation in the substitutional sites and lattice disorder, whereas, high growth temperature promotes the formation of In-N-Sb bonding. The best room temperature and 77 K electrical transport parameters and maximum redshift in the absorption edge have been achieved in the InSbN epilayer grown in the 290 °C ∼ 330 °C temperature range. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON diffraction KW - PHOTOELECTRON spectroscopy KW - ENERGY gaps (Physics) KW - RED shift KW - X-ray diffraction KW - RAMAN spectroscopy N1 - Accession Number: 74668408; Patra, Nimai C. 1 Bharatan, Sudhakar 1 Li, Jia 1 Tilton, Michael 2 Iyer, Shanthi 1; Affiliation: 1: Electrical and Computer Engineering, North Carolina A&T State University, Greensboro, North Carolina 27411, 2: Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, Albuquerque, New Mexico 87117,; Source Info: Apr2012, Vol. 111 Issue 8, p083104; Subject Term: ELECTRON diffraction; Subject Term: PHOTOELECTRON spectroscopy; Subject Term: ENERGY gaps (Physics); Subject Term: RED shift; Subject Term: X-ray diffraction; Subject Term: RAMAN spectroscopy; Number of Pages: 8p; Illustrations: 1 Color Photograph, 1 Diagram, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.3702453 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74668408&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jordan, Jennifer L. AU - Baer, Melvin R. T1 - Mixture model for determination of shock equation of state. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/04/15/ VL - 111 IS - 8 M3 - Article SP - 083516 PB - American Institute of Physics SN - 00218979 AB - Simple mixture models for the prediction of shock equations of state (Hugoniot) are a necessary tool for characterization of multiple composites. A mixture model for determining the shock equation of state of composite materials is presented. The model is completely flexible allowing for multiple (>2) components. Additionally, error propagation analysis for the two component mixture model has been accomplished. The model predicts the equation of state to 5%-15% of the experimental data, which is comparable to variations realized in meso-scale modeling of similar materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EQUATIONS of state KW - COMPOSITE materials KW - POLYMERS KW - MICROSTRUCTURE KW - PARTICULATE matter N1 - Accession Number: 74668425; Jordan, Jennifer L. 1 Baer, Melvin R. 2; Affiliation: 1: Air Force Research Laboratory (AFRL/RWME), Eglin AFB, Florida 32542, 2: Sandia National Laboratories, Albuquerque, New Mexico 87185-0836,; Source Info: Apr2012, Vol. 111 Issue 8, p083516; Subject Term: EQUATIONS of state; Subject Term: COMPOSITE materials; Subject Term: POLYMERS; Subject Term: MICROSTRUCTURE; Subject Term: PARTICULATE matter; Number of Pages: 10p; Illustrations: 5 Charts, 7 Graphs; Document Type: Article L3 - 10.1063/1.3702873 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74668425&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tucker, Joseph C. AU - Chan, Lisa H. AU - Rohrer, Gregory S. AU - Groeber, Michael A. AU - Rollett, Anthony D. T1 - Comparison of grain size distributions in a Ni-based superalloy in three and two dimensions using the Saltykov method JO - Scripta Materialia JF - Scripta Materialia Y1 - 2012/04/15/ VL - 66 IS - 8 M3 - Article SP - 554 EP - 557 SN - 13596462 AB - A three-dimensional (3-D) dataset of Ni-based superalloy Inconel 100 is used as a validation case for using stereology to estimate 3-D grain sizes from 2-D data. 2-D sections of the IN100 dataset are extracted, from which 3-D size distributions are estimated through the use of the Saltykov method and compared to the true 3-D statistics. The Saltykov method corrected the upper tail disparity between the 2-D and 3-D grain size distributions, but the lower tail of the distribution was not improved. [ABSTRACT FROM AUTHOR] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLE size distribution KW - NICKEL alloys KW - HEAT resistant alloys KW - COMPARATIVE studies KW - INCONEL KW - STEREOLOGY KW - ESTIMATION theory KW - Fatigue KW - Grain size distribution KW - Microstructure KW - Superalloy KW - Twinning N1 - Accession Number: 72597995; Tucker, Joseph C. 1; Email Address: joetuck@cmu.edu Chan, Lisa H. 2 Rohrer, Gregory S. 1 Groeber, Michael A. 3 Rollett, Anthony D. 1; Affiliation: 1: Carnegie Mellon University, Pittsburgh, PA, USA 2: EDAX, New York, NY, USA 3: Air Force Research Laboratory, Dayton, OH, USA; Source Info: Apr2012, Vol. 66 Issue 8, p554; Subject Term: PARTICLE size distribution; Subject Term: NICKEL alloys; Subject Term: HEAT resistant alloys; Subject Term: COMPARATIVE studies; Subject Term: INCONEL; Subject Term: STEREOLOGY; Subject Term: ESTIMATION theory; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Grain size distribution; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Superalloy; Author-Supplied Keyword: Twinning; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2012.01.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=72597995&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nandwana, P. AU - Nag, S. AU - Hill, D. AU - Tiley, J. AU - Fraser, H.L. AU - Banerjee, R. T1 - On the correlation between the morphology of α and its crystallographic orientation relationship with TiB and β in boron-containing Ti–5Al–5Mo–5V–3Cr–0.5Fe alloy JO - Scripta Materialia JF - Scripta Materialia Y1 - 2012/04/15/ VL - 66 IS - 8 M3 - Article SP - 598 EP - 601 SN - 13596462 AB - While the role of borides on the microstructure of titanium alloys has been discussed in many previous reports, this paper presents the first experimental evidence of (i) the three-dimensional geometry of α precipitates confirming their equiaxed morphology, as determined by reconstruction of serially sectioned scanning electron microscopy images; and (i) the influence of the crystallographic orientation relationship between β, TiB and α phases on the morphology of α precipitates, investigated via detailed orientation microscopy studies on a boron-containing version of the commercial Ti–5Al–5Mo–5V–3Cr–0.5Fe alloy Ti5553. [ABSTRACT FROM AUTHOR] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - CHEMICAL systems KW - MICROSTRUCTURE KW - PRECIPITATION (Chemistry) KW - CRYSTALLOGRAPHY KW - BORON KW - SCANNING electron microscopy KW - Crystallography KW - EBSD KW - Orientation relationship KW - Ti5553 KW - TiB N1 - Accession Number: 72598036; Nandwana, P. 1 Nag, S. 1 Hill, D. 2 Tiley, J. 3 Fraser, H.L. 2 Banerjee, R. 1; Email Address: banerjee@unt.edu; Affiliation: 1: Center for Advanced Research and Technology, Department of Materials Science and Engineering, University of North Texas, Denton, TX, USA 2: Center for the Accelerated Maturation of Materials, Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, USA 3: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH, USA; Source Info: Apr2012, Vol. 66 Issue 8, p598; Subject Term: TITANIUM alloys; Subject Term: CHEMICAL systems; Subject Term: MICROSTRUCTURE; Subject Term: PRECIPITATION (Chemistry); Subject Term: CRYSTALLOGRAPHY; Subject Term: BORON; Subject Term: SCANNING electron microscopy; Author-Supplied Keyword: Crystallography; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: Orientation relationship; Author-Supplied Keyword: Ti5553; Author-Supplied Keyword: TiB; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2012.01.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=72598036&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Prince, Benjamin D. AU - Steiner, Colby P. AU - Chiu, Yu-Hui T1 - Chemi-luminescence measurements of hyperthermal Xe+/Xe2+ + NH3 reactions. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2012/04/14/ VL - 136 IS - 14 M3 - Article SP - 144314 PB - American Institute of Physics SN - 00219606 AB - Luminescence spectra are recorded for the reactions of Xe+ + NH3 and Xe2+ + NH3 at energies ranging from 11.5 to 206 eV in the center-of-mass (Ecm) frame. Intense features of the luminescence spectra are attributed to the NH (A 3Πi-X 3Σ-), hydrogen Balmer series, and Xe I emission observable for both primary ions. Evidence for charge transfer products is only found through Xe I emission for both primary ions and NH+ emission for Xe2+ primary ions. For both primary ions, the absolute NH (A-X) cross section increases with collision energy before leveling off at a constant value, approximately 9 × 10-18 cm2, at about 50 eV while H-α emission increases linearly with collision energy. The nascent NH (A) populations derived from the spectral analysis are found to be independent of collision energy and have a constant rotational temperature of 4200 K. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMILUMINESCENCE KW - AMMONIA KW - XENON KW - LUMINESCENCE spectroscopy KW - BALMER series KW - CHARGE transfer KW - FORCE & energy N1 - Accession Number: 74278925; Prince, Benjamin D. 1 Steiner, Colby P. 1 Chiu, Yu-Hui 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117, 2: Busek Co. Inc, Natick, Massachusetts 01760,; Source Info: 4/14/2012, Vol. 136 Issue 14, p144314; Subject Term: CHEMILUMINESCENCE; Subject Term: AMMONIA; Subject Term: XENON; Subject Term: LUMINESCENCE spectroscopy; Subject Term: BALMER series; Subject Term: CHARGE transfer; Subject Term: FORCE & energy; NAICS/Industry Codes: 325311 Nitrogenous Fertilizer Manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325612 Polish and Other Sanitation Good Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.3702039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74278925&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sihn, Sangwook AU - Ganguli, Sabyasachi AU - Anderson, David P. AU - Roy, Ajit K. T1 - Enhancement of through-thickness thermal conductivity of sandwich construction using carbon foam JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2012/04/13/ VL - 72 IS - 7 M3 - Article SP - 767 EP - 773 SN - 02663538 AB - Abstract: As a thermal management system, a sandwich construction was developed to have both superior thermal conductivity and structural integrity. The sandwich construction consists of a carbon foam core and unidirectional graphite/epoxy composite facesheets. An emphasis was put on enhancing the thermal conductivity of each phase of sandwich construction as well as interface between the phases. A commercially-available carbon foam was characterized mechanically and thermally. Property variation and anisotropy were observed with the highly conductive graphitic carbon foam. Co-curing of the composite facesheets with the carbon foam core was demonstrated to minimize the thickness of the adhesive layer between the facesheets and the core to produce the best construction of those tested. Comparison made with an adhesively bonded specimen shows that the co-curing is a more efficient method to enhance the through-thickness conductivity. Parametric studies with an analytic model indicate that degree of enhancement in the overall through-thickness conductivity of the sandwich construction from the enhancement of each component including the foam core, facesheet and the bonding methods. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON KW - FOAM KW - THICKNESS measurement KW - THERMAL conductivity KW - SANDWICH construction (Materials) KW - COMPOSITE materials KW - A. Sandwich KW - B. Interface KW - B. Mechanical properties KW - B. Thermal properties KW - Carbon foam N1 - Accession Number: 73805482; Sihn, Sangwook 1,2; Email Address: sangwook@alumni.stanford.edu Ganguli, Sabyasachi 1,2 Anderson, David P. 1,2 Roy, Ajit K. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXBT, Wright-Patterson Air Force Base, OH 45433, USA 2: University of Dayton Research Institute, Multi-Scale Composites and Polymers Division, 300 College Park, Dayton, OH 45469-0060, USA; Source Info: Apr2012, Vol. 72 Issue 7, p767; Subject Term: CARBON; Subject Term: FOAM; Subject Term: THICKNESS measurement; Subject Term: THERMAL conductivity; Subject Term: SANDWICH construction (Materials); Subject Term: COMPOSITE materials; Author-Supplied Keyword: A. Sandwich; Author-Supplied Keyword: B. Interface; Author-Supplied Keyword: B. Mechanical properties; Author-Supplied Keyword: B. Thermal properties; Author-Supplied Keyword: Carbon foam; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.compscitech.2012.02.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73805482&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patwardhan, Siddharth V. AU - Emami, Fateme S. AU - Berry, Rajiv J. AU - Jones, Sharon E. AU - Naik, Rajesh R. AU - Deschaume, Olivier AU - Heinz, Hendrik AU - Perry, Carole C. T1 - Chemistry of Aqueous Silica Nanoparticle Surfaces and the Mechanism of Selective Peptide Adsorption. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2012/04/11/ VL - 134 IS - 14 M3 - Article SP - 6244 EP - 6256 SN - 00027863 AB - Control over selective recognition of biomolecules on inorganic nanoparticles is a major challenge for the synthesis of new catalysts, functional carriers for therapeutics, and assembly of renewable biobased materials. We found low sequence similarity among sequences of peptides strongly attracted to amorphous silica nanoparticles of various size (15-450 nm) using combinatorial phage display methods. Characterization of the surface by acid base titrations and zeta potential measurements revealed that the acidity of the silica particles increased with larger particle size, corresponding to between 5% and 20% ionization of silanol groups at pH 7. The wide range of surface ionization results in the attraction of increasingly basic peptides to increasingly acidic nanoparticles, along with major changes in the aqueous interfacial layer as seen in molecular dynamics simulation. We identified the mechanism of peptide adsorption using binding assays, zeta potential measurements, IR spectra, and molecular simulations of the purified peptides (without phage) in contact with uniformly sized silica particles. Positively charged peptides are strongly attracted to anionic silica surfaces by ion pairing of protonated N-termini, Lys side chains, and Arg side chains with negatively charged siloxide groups. Further, attraction of the peptides to the surface involves hydrogen bonds between polar groups in the peptide with silanol and siloxide groups on the silica surface, as well as ion-dipole, dipole-dipole, and van-der-Waals interactions. Electrostatic attraction between peptides and particle surfaces is supported by neutralization of zeta potentials, an inverse correlation between the required peptide concentration for measurable adsorption and the peptide pI, and proximity of cationic groups to the surface in the computation. The importance of hydrogen bonds and polar interactions is supported by adsorption of noncationic peptides containing Ser, His, and Asp residues, including the formation of multilayers. We also demonstrate tuning of interfacial interactions using mutant peptides with an excellent correlation between adsorption measurements, zeta potentials, computed adsorption energies, and the proposed binding mechanism. Follow-on questions about the relation between peptide adsorption on silica nanoparticles and mineralization of silica from peptide-stabilized precursors are raised. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICA nanoparticles KW - ADSORPTION KW - PEPTIDES -- Analysis KW - SURFACE chemistry KW - COMBINATORIAL chemistry KW - MOLECULAR recognition N1 - Accession Number: 75187921; Patwardhan, Siddharth V. 1,2 Emami, Fateme S. 3 Berry, Rajiv J. 4 Jones, Sharon E. 4 Naik, Rajesh R. 4 Deschaume, Olivier 1,5 Heinz, Hendrik 3; Email Address: hendrik.heinz@uakron.edu Perry, Carole C. 1; Affiliation: 1: Interdisciplinary Biomedical Research Centre, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, U.K. 2: Department of Chemical and Process Engineering, University of Strathclyde, 75 Montrose Street, Glasgow G1 1XJ, U.K. 3: Department of Polymer Engineering, University of Akron, Akron, Ohio 44325-0301, United States 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, United States 5: Unité POLY, Université Catholique de Louvain, Boltzmann A+2, Croix du Sud, 1, B-1348, Louvain-la-Neuve, Belgium; Source Info: 4/11/2012, Vol. 134 Issue 14, p6244; Subject Term: SILICA nanoparticles; Subject Term: ADSORPTION; Subject Term: PEPTIDES -- Analysis; Subject Term: SURFACE chemistry; Subject Term: COMBINATORIAL chemistry; Subject Term: MOLECULAR recognition; Number of Pages: 13p; Document Type: Article L3 - 10.1021/ja211307u UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75187921&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maixner, Michael R. AU - McDaniel, David R. T1 - Preliminary calculations for a flexible cable in steady, non-uniform flow JO - Aerospace Science & Technology JF - Aerospace Science & Technology Y1 - 2012/04// VL - 18 IS - 1 M3 - Article SP - 1 EP - 7 SN - 12709638 AB - Abstract: Podeʼs closed-form solution provides the shape and tension within a flexible cable tethered to a balloon or buoy subjected to a steady, two-dimensional uniform current. When the flow is non-uniform, the velocity field must be decomposed into an approximate step-wise (“polygonal”) distribution, and a starting point for the calculations assumed. A simple and robust solution methodology is proposed which discretizes the cable and employs static equilibrium of each element and an optimization technique to determine the shape and tension for the cable. A parametric study revealed that the proposed model agreed exceptionally well with Podeʼs closed form solution for uniform velocity distributions in both tension and position, even with a small number of elements. Excellent agreement was obtained for tension between all three methods. For a non-uniform velocity field, cable shape and tension are calculated; no closed-form solution was available for comparison in this case. Positions predicted by the polygonal method approached those obtained by the proposed model, but only with an order of magnitude more elements than with the proposed method; agreement in tension was excellent. The model has also been applied to multiple balloons, and, by changing the fluid medium, may be readily extended to water buoys. [Copyright &y& Elsevier] AB - Copyright of Aerospace Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CABLES KW - BALLOONS -- Aerodynamics KW - BUOYS KW - STREAMFLOW velocity KW - MATHEMATICAL optimization KW - AERODYNAMICS -- Mathematical models KW - Balloons KW - Buoys KW - Flexible cable KW - Pode KW - Tethers N1 - Accession Number: 73805735; Maixner, Michael R. 1; Email Address: michael.maixner@usafa.edu McDaniel, David R. 2; Email Address: drmcd@uab.edu; Affiliation: 1: Department of Engineering Mechanics, DFEM, 2354 Fairchild Drive, Suite 6L-155, US Air Force Academy, CO 80840, USA 2: Department of Mechanical Engineering, 1530 3rd Avenue South, Hoehn 360, Birmingham, AL 35294-4440, USA; Source Info: Apr2012, Vol. 18 Issue 1, p1; Subject Term: CABLES; Subject Term: BALLOONS -- Aerodynamics; Subject Term: BUOYS; Subject Term: STREAMFLOW velocity; Subject Term: MATHEMATICAL optimization; Subject Term: AERODYNAMICS -- Mathematical models; Author-Supplied Keyword: Balloons; Author-Supplied Keyword: Buoys; Author-Supplied Keyword: Flexible cable; Author-Supplied Keyword: Pode; Author-Supplied Keyword: Tethers; NAICS/Industry Codes: 321999 All Other Miscellaneous Wood Product Manufacturing; NAICS/Industry Codes: 332619 Other fabricated wire product manufacturing; NAICS/Industry Codes: 332618 Other Fabricated Wire Product Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ast.2011.03.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73805735&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CONF AU - DeBonis, James R. AU - Oberkampf, William L. AU - Wolf, Richard T. AU - Orkwis, Paul D. AU - Turner, Mark G. AU - Babinsky, Holger AU - Benek, John A. T1 - Assessment of Computational Fluid Dynamics and Experimental Data for Shock Boundary-Layer Interactions. JO - AIAA Journal JF - AIAA Journal Y1 - 2012/04// VL - 50 IS - 4 M3 - Proceeding SP - 891 EP - 903 SN - 00011452 AB - A workshop on the computational fluid dynamics (CFD) prediction of shock boundary-layer interactions (SBLIs) was held at the 48th AIAA Aerospace Sciences Meeting. As part of the workshop, numerous CFD analysts submitted solutions to four experimentally measured SBLIs. This paper describes the assessment of the CFD predictions. The assessment includes an uncertainty, analysis of the experimental data, the definition of an error metric, and the application of that metric to the CFD solutions. The CFD solutions provided very similar levels of error and, in general, it was difficult to discern clear trends in the data. For the Reynolds-averaged Navier-Stokes (RANS) methods, the choice of turbulence model appeared to be the largest factor in solution accuracy. Scale-resolving methods, such as large-eddy simulation (LES), hybrid RANS/LES, and direct numerical simulation, produced error levels similar to RANS methods but provided superior predictions of normal stresses. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE fluid dynamics KW - FLUID dynamics KW - FLUID mechanics KW - ANALYTICAL mechanics KW - CONTINUUM mechanics N1 - Accession Number: 74215733; DeBonis, James R. 1; Email Address: james.r.debonis@nasa.gov Oberkampf, William L. 2; Email Address: wloconsulting@gmail.com Wolf, Richard T. 3; Email Address: wolfrt@mail.uc.edu Orkwis, Paul D. 3; Email Address: orkwispd@ucmail.uc.edu Turner, Mark G. 3; Email Address: turnermr@ucmail.uc.edu Babinsky, Holger 4; Email Address: hb@eng.cam.ac.uk Benek, John A. 5; Email Address: john.benek@wpafb.af.mil; Affiliation: 1: NASA John H. Glenn Research Center, Lewis Field, Cleveland, Ohio 44135 2: WLO Consulting, Austin, Texas 78633 3: University of Cincinnati, Cincinnati, Ohio 45221 4: University of Cambridge, Cambridge, England CB2 1PZ, United Kingdom 5: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Apr2012, Vol. 50 Issue 4, p891; Subject Term: SPACE fluid dynamics; Subject Term: FLUID dynamics; Subject Term: FLUID mechanics; Subject Term: ANALYTICAL mechanics; Subject Term: CONTINUUM mechanics; Number of Pages: 13p; Document Type: Proceeding L3 - 10.2514/1.J051341 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74215733&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanford, Bret AU - Beran, Philip AU - Kobayashi, Marcelo T1 - Aeroelastic Optimization of Flapping Wing Venation: A Cellular Division Approach. JO - AIAA Journal JF - AIAA Journal Y1 - 2012/04// VL - 50 IS - 4 M3 - Article SP - 938 EP - 951 SN - 00011452 AB - The aeroelastic response of a biologically inspired flapping membrane wing to unsteady inertial and aerodynamic forces is strongly predicated upon the topological distribution of the underlying skeletal reinforcement (venation patterns). Proper exploitation of this relationship may enable the development of effective flapping wing micro air vehicles. The skeletal topology is parameterized into a developmental program which, when compiled and executed, evolves the wing topology in stages. A genetic algorithm can optimize the details of this program, rather than explicitly considering the topology itself, thus removing the link between design variables and topological geometry resolution. This cellular division tool is coupled to an unsteady aeroelastic representation of a flapping wing in forward flight in order to obtain the Pareto tradeoff curves between thrust generation, lift generation, and input power requirements. The topologies obtained along the front provide an understanding of the key relationships between skeletal topology, aeroelastic behavior, and performance metrics during flapping flight. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - LINEAR algebras KW - COMBINATORIAL optimization KW - AEROELASTICITY KW - FLUID mechanics N1 - Accession Number: 74215737; Stanford, Bret 1; Email Address: bret.stanford@wpafb.af.mil Beran, Philip 1; Email Address: philip.beran@wpafb.af.mil Kobayashi, Marcelo 2; Email Address: marcelok@hawaii.edu; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: University of Hawaii at Manoa, Honolulu, Hawaii 96822; Source Info: Apr2012, Vol. 50 Issue 4, p938; Subject Term: ALGORITHMS; Subject Term: LINEAR algebras; Subject Term: COMBINATORIAL optimization; Subject Term: AEROELASTICITY; Subject Term: FLUID mechanics; Number of Pages: 14p; Document Type: Article L3 - 10.2514/1.J051443 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74215737&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Steinberg, Adam M. AU - Boxx, Isaac AU - Stöhr, Michael AU - Meier, Wolfgang AU - Carter, Campbell D. T1 - Effects of Flow Structure Dynamics on Thermoacoustic Instabilities in Swirl-Stabilized Combustion. JO - AIAA Journal JF - AIAA Journal Y1 - 2012/04// VL - 50 IS - 4 M3 - Article SP - 952 EP - 967 SN - 00011452 AB - The thermoacoustic coupling caused by dynamic flow/flame interactions was investigated in a gas-turbine model combustor using high-repetition-rate measurements of the three-component velocity field, OH laser-induced fluorescence, and OH* chemiluminescence. Three fuel-lean, swirl-stabilized flames were investigated, each of which underwent self-excited thermoacoustic pulsations. The most energetic flow structure at each condition was a helical vortex core that circumscribed the combustor at a frequency that was independent of the acoustics. Resolving the measurement sequence with respect to both the phase in the thermoacoustic cycle and the azimuthal position of the helix allowed quantification of the oscillatory flow and flame dynamics. Periodic vortex/flame interactions caused by deformation of the helices generated local heat-release oscillations having spatially complex phase distributions relative to the acoustics. The local thermoacoustic coupling, determined by statistically solving the Rayleigh integral, showed intertwined regions of positive and negative coupling due to these vortices. In the quietest flame, the helical vortex created a large region of negative coupling that helped damp the oscillations. In the louder flames, the shapes of the oscillating vortices and flames were such that large regions of positive coupling were generated, driving the instability. From these observations, flame/vortex configurations that promote stability are identified. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOACOUSTICS KW - ANALYTICAL mechanics KW - VIBRATION (Mechanics) KW - CONFIGURATION space KW - ACOUSTIC couplers KW - FLUID mechanics N1 - Accession Number: 74215738; Steinberg, Adam M. 1 Boxx, Isaac 1 Stöhr, Michael 1 Meier, Wolfgang 1 Carter, Campbell D. 2; Affiliation: 1: DLR, German Aerospace Center, 70569 Stuttgart, Germany 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Apr2012, Vol. 50 Issue 4, p952; Subject Term: THERMOACOUSTICS; Subject Term: ANALYTICAL mechanics; Subject Term: VIBRATION (Mechanics); Subject Term: CONFIGURATION space; Subject Term: ACOUSTIC couplers; Subject Term: FLUID mechanics; Number of Pages: 16p; Document Type: Article L3 - 10.2514/1.J051466 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74215738&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Paznukhov, V. V. AU - Carrano, C. S. AU - Doherty, P. H. AU - Groves, K. M. AU - Caton, R. G. AU - Valladares, C. E. AU - Seemala, G. K. AU - Bridgwood, C. T. AU - Adeniyi, J. AU - Amaeshi, L. L. N. AU - Damtie, B. AU - D'Ujanga Mutonyi, F. AU - Ndeda, J. O. H. AU - Baki, P. AU - Obrou, O. K. AU - Okere, B. AU - Tsidu, G. M. T1 - Equatorial plasma bubbles and L-band scintillations in Africa during solar minimum. JO - Annales Geophysicae (09927689) JF - Annales Geophysicae (09927689) Y1 - 2012/04// VL - 30 IS - 4 M3 - Article SP - 675 EP - 682 SN - 09927689 AB - We report on the longitudinal, local time and seasonal occurrence of equatorial plasma bubbles (EPBs) and L band (GPS) scintillations over equatorial Africa. The measurements were made in 2010, as a first step toward establishing the climatology of ionospheric irregularities over Africa. The scintillation intensity is obtained by measuring the standard deviation of normalized GPS signal power. The EPBs are detected using an automated technique, where spectral analysis is used to extract and identify EPB events from the GPS TEC measurements. Overall, the observed seasonal climatology of the EPBs as well as GPS scintillations in equatorial Africa is adequately explained by geometric arguments, i.e., by the alignment of the solar terminator and local geomagnetic field, or STBA hypothesis (Tsunoda, 1985, 2010a). While plasma bubbles and scintillations are primarily observed during equinoctial periods, there are longitudinal differences in their seasonal occurrence statistics. The Atlantic sector has the most intense, longest lasting, and highest scintillation occurrence rate in-season. There is also a pronounced increase in the EPB occurrence rate during the June solstice moving west to east. In Africa, the seasonal occurrence shifts towards boreal summer solstice, with fewer occurrences and shorter durations in equinox seasons. Our results also suggest that the occurrence of plasma bubbles and GPS scintillations over Africa are well correlated, with scintillation intensity depending on depletion depth. A question remains about the possible physical mechanisms responsible for the difference in the occurrence phenomenology of EPBs and GPS scintillations between different regions in equatorial Africa. [ABSTRACT FROM AUTHOR] AB - Copyright of Annales Geophysicae (09927689) is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA bubbles KW - ARTIFICIAL satellites -- Scintillation KW - IONOSPHERIC forecasting KW - ARTIFICIAL satellites in telecommunication KW - CLIMATOLOGY KW - GLOBAL Positioning System KW - AFRICA KW - Ionosphere (Equatorial ionosphere; Ionospheric irregularities) KW - Radio science (Space and satellite communication) N1 - Accession Number: 85778951; Paznukhov, V. V. 1; Email Address: vadym.paznukhov@bc.edu Carrano, C. S. 1 Doherty, P. H. 1 Groves, K. M. 1,2 Caton, R. G. 2 Valladares, C. E. 1 Seemala, G. K. 1 Bridgwood, C. T. 1 Adeniyi, J. 3 Amaeshi, L. L. N. 4 Damtie, B. 5 D'Ujanga Mutonyi, F. 6 Ndeda, J. O. H. 7 Baki, P. 8 Obrou, O. K. 9 Okere, B. 10 Tsidu, G. M. 11; Affiliation: 1: Institute for Scientific Research, Boston College, Chestnut Hill, MA, USA 2: Air Force Research Laboratory, Hanscom Field, MA, USA 3: University of Ilorin, Ilorin, Nigeria 4: University of Lagos, Lagos, Nigeria 5: Bahir Dar University, Bahir Dar, Ethiopia 6: Makerere University, Kampala, Uganda 7: Jomo Kenyatta University, Nairobi, Kenya 8: University of Nairobi, Nairobi, Kenya 9: Université de Cocody à Abidjan, Abidjan, Cote d'Ivoire 10: University of Nigeria, Nsukka, Nigeria 11: Addis Ababa University, Addis Ababa, Ethiopia; Source Info: Apr2012, Vol. 30 Issue 4, p675; Subject Term: PLASMA bubbles; Subject Term: ARTIFICIAL satellites -- Scintillation; Subject Term: IONOSPHERIC forecasting; Subject Term: ARTIFICIAL satellites in telecommunication; Subject Term: CLIMATOLOGY; Subject Term: GLOBAL Positioning System; Subject Term: AFRICA; Author-Supplied Keyword: Ionosphere (Equatorial ionosphere; Ionospheric irregularities); Author-Supplied Keyword: Radio science (Space and satellite communication); NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 517410 Satellite Telecommunications; Number of Pages: 8p; Document Type: Article L3 - 10.5194/angeo-30-675-2012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=85778951&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kumar, A. AU - Voevodin, A.A. AU - Zemlyanov, D. AU - Zakharov, D.N. AU - Fisher, T.S. T1 - Rapid synthesis of few-layer graphene over Cu foil JO - Carbon JF - Carbon Y1 - 2012/04// VL - 50 IS - 4 M3 - Article SP - 1546 EP - 1553 SN - 00086223 AB - Abstract: We report a unique process for rapid synthesis of few-layer graphene films on Cu foil by microwave plasma chemical vapor deposition (MPCVD). We show that the plasma/metal interaction can be advantageous for a rapid synthesis of such thin films. The process can produce films of controllable quality from amorphous to highly crystalline by adjusting plasma conditions during growth processes of ∼100s duration and with no supplemental substrate heating. Films have been characterized using Raman spectroscopy, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The results help to identify the stages involved in the MPCVD deposition of thin carbon films on Cu foil, and the findings open new pathways for a rapid growth of few-layer graphene films. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPHENE KW - COPPER foil KW - MICROWAVE plasmas KW - PLASMA-enhanced chemical vapor deposition KW - THIN films KW - ORGANIC synthesis (Chemistry) KW - X-ray photoelectron spectroscopy KW - CRYSTAL growth N1 - Accession Number: 70390012; Kumar, A. 1 Voevodin, A.A. 1,2 Zemlyanov, D. 1 Zakharov, D.N. 1 Fisher, T.S. 1,2; Email Address: tsfisher@purdue.edu; Affiliation: 1: Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, OH 45433, United States; Source Info: Apr2012, Vol. 50 Issue 4, p1546; Subject Term: GRAPHENE; Subject Term: COPPER foil; Subject Term: MICROWAVE plasmas; Subject Term: PLASMA-enhanced chemical vapor deposition; Subject Term: THIN films; Subject Term: ORGANIC synthesis (Chemistry); Subject Term: X-ray photoelectron spectroscopy; Subject Term: CRYSTAL growth; NAICS/Industry Codes: 332999 All Other Miscellaneous Fabricated Metal Product Manufacturing; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.carbon.2011.11.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70390012&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Catoire, Laurent AU - Chambreau, Steven D. AU - Vaghjiani, Ghanshyam L. T1 - Chemical kinetics interpretation of hypergolicity of dicyanamide ionic liquid-based systems JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/04// VL - 159 IS - 4 M3 - Article SP - 1759 EP - 1768 SN - 00102180 AB - Abstract: Ionic liquids are candidates for replacing hydrazine and hydrazine derivatives systems. A detailed chemical kinetics model has been built to examine the gas-phase chemistry between isocyanic acid (HNCO), white fuming nitric acid (WFNA), N2O, CO2, and water, especially at low temperatures (ambient to 423K). This kinetics model is able to explain the gas-phase ignition observed during hypergolic ignition of the ionic liquid 1-butyl-3-methyl-imidazolium dicyanamide (BMIM-dca) with WFNA. Sensitivity analyses have been performed to examine the reaction pathways for ignition. Ignition is predicted to occur via an exothermic reaction between isocyanic acid (HNCO) and nitric acid (HONO2), and subsequent HONO2 thermal decomposition that has NO2 and OH radicals as the primary chain carriers. A detailed understanding of the initiation processes in the liquid phase is needed, as the BMIM-dca and WFNA begin to react to produce the above preignition species for the proposed chemical kinetics model to describe the ignition behavior of the system. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL kinetics KW - CALCIUM cyanamide KW - IONIC liquids KW - HYDRAZINE KW - MATHEMATICAL models KW - ISOCYANIC acid KW - DECOMPOSITION (Chemistry) KW - CHEMICAL reactions KW - Combustion KW - Hypergolicity KW - Ignition KW - Ionic liquids N1 - Accession Number: 72341474; Catoire, Laurent 1,2; Email Address: laurent.catoire@ensta-paristech.fr Chambreau, Steven D. 3 Vaghjiani, Ghanshyam L. 4; Affiliation: 1: ICARE-CNRS and University of Orleans, 1C, Avenue de la Recherche Scientifique, 45071 Orleans, France 2: ENSTA ParisTech, 32, Boulevard Victor, 75739 Paris Cedex 15, France 3: ERC Incorporated, 10 E. Saturn Blvd., Edwards AFB, CA 92524, USA 4: Air Force Research Laboratory, Propellants Branch (AFRL/RZSP), 10 E. Saturn Blvd., Edwards AFB, CA 92524, USA; Source Info: Apr2012, Vol. 159 Issue 4, p1759; Subject Term: CHEMICAL kinetics; Subject Term: CALCIUM cyanamide; Subject Term: IONIC liquids; Subject Term: HYDRAZINE; Subject Term: MATHEMATICAL models; Subject Term: ISOCYANIC acid; Subject Term: DECOMPOSITION (Chemistry); Subject Term: CHEMICAL reactions; Author-Supplied Keyword: Combustion; Author-Supplied Keyword: Hypergolicity; Author-Supplied Keyword: Ignition; Author-Supplied Keyword: Ionic liquids; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.combustflame.2011.12.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=72341474&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McCauley, Mathew AU - Liebling-Kalifani, Helen AU - Hughes, Jamie T1 - Military Mental Health Professionals On Operational Deployment: An Exploratory Study. JO - Community Mental Health Journal JF - Community Mental Health Journal Y1 - 2012/04// VL - 48 IS - 2 M3 - Article SP - 238 EP - 248 SN - 00103853 AB - This exploratory study aimed to develop greater insight into the occupational and personal nature of the practice of mental healthcare on operational deployments. Twenty-eight British military mental health professionals were identified as having recently returned from deployment, with 35% agreeing to participate in semi-structured qualitative interviews. Results suggest that whilst this population have a range of stressors, their main concern is to work towards the success of the overall mission objectives, mainly through achieving their clinical goals. Such work is impacted by challenges such as ethical difficulties, professional obstacles, bonding with colleagues and personal issues. They do however rely upon a range of intra and inter-personal strategies to overcome these hurdles successfully. A number of suggestions for improved mental healthcare on deployment are also identified. A review of the implications of the findings is offered and recommendations for improved training and support for mental healthcare professionals are explored. Finally, potential avenues for future research are considered. [ABSTRACT FROM AUTHOR] AB - Copyright of Community Mental Health Journal is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GROUNDED theory KW - INTERPERSONAL relations KW - JOB stress KW - MATHEMATICAL models KW - RESEARCH KW - ROLE conflict KW - MILITARY personnel -- Psychology KW - MENTAL health personnel KW - PSYCHOLOGY KW - QUALITATIVE research KW - THEORY KW - MILITARY service KW - DESCRIPTIVE statistics KW - GREAT Britain KW - Military Mental Health KW - Occupational Stress KW - Operational Deployment N1 - Accession Number: 73463476; McCauley, Mathew 1; Email Address: mathew.mccauley@lakenheath.af.mil Liebling-Kalifani, Helen 2 Hughes, Jamie 3; Affiliation: 1: Behavioral Health Flight, 48 MDOS/SGOW, United States Air Force, RAF Lakenheath, Lakenheath IP279PN UK 2: Faculty of Health and Life Sciences, Coventry University, Priory Street Coventry CV15FB UK 3: Joint Medical Command, Ministry of Defence, Headquarters Surgeon General, Coltman House Whittington Barracks, Lichfield WS14 9PY UK; Source Info: Apr2012, Vol. 48 Issue 2, p238; Subject Term: GROUNDED theory; Subject Term: INTERPERSONAL relations; Subject Term: JOB stress; Subject Term: MATHEMATICAL models; Subject Term: RESEARCH; Subject Term: ROLE conflict; Subject Term: MILITARY personnel -- Psychology; Subject Term: MENTAL health personnel; Subject Term: PSYCHOLOGY; Subject Term: QUALITATIVE research; Subject Term: THEORY; Subject Term: MILITARY service; Subject Term: DESCRIPTIVE statistics; Subject Term: GREAT Britain; Author-Supplied Keyword: Military Mental Health; Author-Supplied Keyword: Occupational Stress; Author-Supplied Keyword: Operational Deployment; NAICS/Industry Codes: 621330 Offices of Mental Health Practitioners (except Physicians); Number of Pages: 11p; Illustrations: 1 Diagram, 3 Charts; Document Type: Article L3 - 10.1007/s10597-011-9407-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73463476&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Walley, J. AU - Wheeler, R. AU - Uchic, M. AU - Mills, M. T1 - In-Situ Mechanical Testing for Characterizing Strain Localization During Deformation at Elevated Temperatures. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2012/04// VL - 52 IS - 4 M3 - Article SP - 405 EP - 416 SN - 00144851 AB - An experimental methodology has been developed to characterize local strain heterogeneities in alloys via in-situ scanning electron microscope (SEM) based mechanical testing. Quantitative measurements of local strains as a function of grain orientation, morphology and neighborhood are crucial for mechanistic understanding and validation of crystal plasticity models. This study focuses on the technical challenges associated with performing creep tests at elevated temperatures ≤700°C in an SEM. Samples of nickel-based superalloy Rene 104 were used for this study, but the technique is applicable to testing of any metal samples at elevated temperature. Electron beam lithography was employed to produce a suitable surface speckle pattern of hafnium oxide to facilitate full field displacement measurements using a commercial software package. The speckle pattern proved to have good thermal stability and provided excellent contrast for image acquisition using secondary electron imaging at elevated temperature. The speckle pattern and microscope magnification were optimized to obtain the resolution necessary to discern strain localizations within grain interiors and along grain boundaries. Minimum strain resolution due to SEM image distortions was determined prior to tensile testing, and image integration methods were utilized to minimize imaging artifacts. Limitations due to the present specimen heating method and potential solutions to these limitations are also addressed. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - 2D digital image correlation KW - Elevated temperature tension experiment KW - Nickel-based superalloy KW - Scanning electron microscopy KW - Speckle pattern development N1 - Accession Number: 73463841; Walley, J. 1; Email Address: walley.7@osu.edu Wheeler, R. 2; Email Address: Robert.Wheeler@wpafb.af.mil Uchic, M. 3; Email Address: Michael.Uchic@wpafb.af.mil Mills, M. 1; Email Address: mills.108@osu.edu; Affiliation: 1: The Ohio State University, 477 Watts Hall, 2041 College Rd. Columbus 43210 USA 2: UES, Inc., 4401 North Dayton-Xenia Rd. Dayton 45432 USA 3: Air Force Research Laboratory, Materials & Manufacturing Directorate, AFRL/RXLM, Wright Patterson AFB, Dayton 45433 USA; Source Info: Apr2012, Vol. 52 Issue 4, p405; Author-Supplied Keyword: 2D digital image correlation; Author-Supplied Keyword: Elevated temperature tension experiment; Author-Supplied Keyword: Nickel-based superalloy; Author-Supplied Keyword: Scanning electron microscopy; Author-Supplied Keyword: Speckle pattern development; Number of Pages: 12p; Document Type: Article L3 - 10.1007/s11340-011-9499-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73463841&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - SHANMUGAM, V AU - PENMETSA, R AU - TUEGEL, E T1 - Calibration of a probabilistic cohesive zone model for generating a fracture nomograph. JO - Fatigue & Fracture of Engineering Materials & Structures JF - Fatigue & Fracture of Engineering Materials & Structures Y1 - 2012/04// VL - 35 IS - 4 M3 - Article SP - 328 EP - 346 PB - Wiley-Blackwell SN - 8756758X AB - ABSTRACT In the recent years, Cohesive Zone Models (CZMs) have gained increasing popularity for modelling the fracture process [1] and also in other applications like composite de-lamination [2] solder failures [3] in circuits, etc. This can be attributed to the ability of the CZM to adapt to the nonlinearities in the process it represents by adjusting the model parameters. These parameters that are selected to represent the material behaviour in the vicinity of the crack or a damage zone are non-deterministic in nature resulting in random fracture strength estimates. Currently, there are no standardized tests for measuring the CZM parameters and their random scatter. Numerous researchers in the literature suggest values for the CZM parameters based on their experience from limited test data. Traditionally, fracture toughness is determined through coupon tests for any material system that is being analysed using Linear Elastic Fracture Mechanics to determine the fracture strength of a specimen. Since data for fracture toughness are available, this research is aimed at determining the probability density functions (PDFs) for the cohesive zone parameters that would give the same scatter in fracture strength as that obtained from the test statistics. Correlations between the model parameters were introduced to improve the accuracy of the fracture strength PDF. A finite width cracked plate was selected as a test case to demonstrate the process. This paper also presents evidence that material scatter can be isolated from the geometric effects to determine a normalized PDF of fracture strength for a given material. This normalized PDF can then be scaled, using mean fracture strength, to any crack configuration to develop a nomograph that can be used to rapidly assess risk without the need for a probabilistic fracture analysis. [ABSTRACT FROM AUTHOR] AB - Copyright of Fatigue & Fracture of Engineering Materials & Structures is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRACTURE mechanics KW - CALIBRATION KW - NOMOGRAPHY (Mathematics) KW - STRENGTH of materials KW - BRITTLENESS N1 - Accession Number: 73321468; SHANMUGAM, V 1 PENMETSA, R 2 TUEGEL, E 2; Affiliation: 1: Department of Mechanical and Materials Engineering, Wright State University, Ohio 45435 2: Air Force Research Laboratory, Air Vehicles Directorate (RBSM), Ohio 45433; Source Info: Apr2012, Vol. 35 Issue 4, p328; Subject Term: FRACTURE mechanics; Subject Term: CALIBRATION; Subject Term: NOMOGRAPHY (Mathematics); Subject Term: STRENGTH of materials; Subject Term: BRITTLENESS; Number of Pages: 19p; Document Type: Article L3 - 10.1111/j.1460-2695.2011.01624.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73321468&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Arthur, Winfred AU - Glaze, Ryan M. AU - Bhupatkar, Alok AU - Villado, Anton J. AU - Bennett, Winston AU - Rowe, Leah J. T1 - Team Task Analysis: Differentiating Between Tasks Using Team Relatedness and Team Workflow as Metrics of Team Task Interdependence. JO - Human Factors JF - Human Factors Y1 - 2012/04// VL - 54 IS - 2 M3 - Article SP - 277 EP - 295 SN - 00187208 AB - Objective: As a constructive replication and extension of Arthur, Edwards, Bell, Villado, and Bennett (2005), the objective of the current study was to further investigate the efficacy of team relatedness and team workflow ratings (along with their composite) as metrics of interdependence.Background: Although an analysis of task and job interdependence has important implications and uses in domains such as job design, selection, and training, the job analysis literature has been slow to develop an effective method to identify team-based tasks and jobs.Method: To achieve the study’s objectives, 140 F-16 fighter pilots (35 four-person teams) rated 34 task and activity statements in terms of their team relatedness and team workflow.Results: The results indicated that team relatedness and team workflow effectively differentiated between tasks with varying levels of interdependency (as identified by instructor pilots who served as subject matter experts) within the same job. In addition, teams that accurately perceived the level of interdependency performed better on a four-ship F-16 flight-training program than those that did not.Conclusion: Team relatedness and team workflow ratings can effectively differentiate between tasks with varying levels of interdependency.Application: Like traditional individual task or job analysis, this information can serve as the basis for specified human resource functions and interventions, and as diagnostic indicators as well. [ABSTRACT FROM PUBLISHER] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - task interdependence KW - team interdependence KW - team relatedness KW - team task analysis KW - team workflow KW - team-based jobs KW - teams N1 - Accession Number: 73902060; Arthur, Winfred 1 Glaze, Ryan M. 1 Bhupatkar, Alok 1 Villado, Anton J. 1 Bennett, Winston 2 Rowe, Leah J. 3; Affiliation: 1: Texas A&M University, College Station 2: Air Force Research Laboratory, Dayton, Ohio 3: L-3 Communications, Dayton, Ohio; Source Info: Apr2012, Vol. 54 Issue 2, p277; Author-Supplied Keyword: task interdependence; Author-Supplied Keyword: team interdependence; Author-Supplied Keyword: team relatedness; Author-Supplied Keyword: team task analysis; Author-Supplied Keyword: team workflow; Author-Supplied Keyword: team-based jobs; Author-Supplied Keyword: teams; Number of Pages: 19p; Document Type: Article L3 - 10.1177/0018720811435234 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73902060&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wei, Shuangqing AU - Kannan, Rajgopal AU - Chakravarthy, Vasu AU - Rangaswamy, Murali T1 - CSI Usage over Parallel Fading Channels under Jamming Attacks: A Game Theory Study. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2012/04// VL - 60 IS - 4 M3 - Article SP - 1167 EP - 1175 SN - 00906778 AB - Consider a parallel channel with M independent flat-fading subchannels. There exists a smart jammer which has possession of a copy of perfect channel state information (CSI) measured and sent back by a receiver to its transmitter. Under this model, a class of two-person zero-sum games is investigated where either achievable mutual information rate or Chernoff bound is taken as the underlying pay-off function with the strategy space of each player determined by respective power control and hopping functions. More specifically, we have tackled and answered the following three fundamental questions. The first one is about whether the transmitter and jammer should hop or fully use all degrees of freedom over the entire parallel channels given the full CSI available to both of them, i.e. to hop or not to hop. The second question is about the impact of sending back CSI on system performance considering that the smart jammer can exploit CSI to further enhance its interference effects, i.e. to feedback or not to feedback. The last question is about whether the amount of feedback information can be reduced given the mutual restrictions between transmitter and jammer, i.e. when to feedback and when not to. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO transmitters & transmission -- Fading KW - PARALLELS (Geometry) KW - RADIO interference KW - GAME theory KW - ELECTRIC power KW - FEEDBACK control systems KW - channel state information (CSI) KW - Fading KW - Game theory KW - Games KW - Jamming KW - parallel fading channels KW - Power control KW - Receivers KW - Transmitters KW - zero-sum game N1 - Accession Number: 74305467; Wei, Shuangqing 1 Kannan, Rajgopal 2 Chakravarthy, Vasu 3 Rangaswamy, Murali 3; Affiliation: 1: Louisiana State University, Department of Electrical and Computer Engineering 2: Louisiana State University, Department of Computer Science 3: Air Force Research Laboratory, Wright-Patterson, Ohio; Source Info: Apr2012, Vol. 60 Issue 4, p1167; Subject Term: RADIO transmitters & transmission -- Fading; Subject Term: PARALLELS (Geometry); Subject Term: RADIO interference; Subject Term: GAME theory; Subject Term: ELECTRIC power; Subject Term: FEEDBACK control systems; Author-Supplied Keyword: channel state information (CSI); Author-Supplied Keyword: Fading; Author-Supplied Keyword: Game theory; Author-Supplied Keyword: Games; Author-Supplied Keyword: Jamming; Author-Supplied Keyword: parallel fading channels; Author-Supplied Keyword: Power control; Author-Supplied Keyword: Receivers; Author-Supplied Keyword: Transmitters; Author-Supplied Keyword: zero-sum game; Number of Pages: 0p; Document Type: Article L3 - 10.1109/TCOMM.2012.021712.100018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74305467&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alqadah, Hatim F. AU - Ferrara, Matthew AU - Fan, Howard AU - Parker, Jason T. T1 - Single Frequency Inverse Obstacle Scattering: A Sparsity Constrained Linear Sampling Method Approach. JO - IEEE Transactions on Image Processing JF - IEEE Transactions on Image Processing Y1 - 2012/04// VL - 21 IS - 4 M3 - Article SP - 2062 EP - 2074 SN - 10577149 AB - The linear sampling method (LSM) offers a qualitative image reconstruction approach, which is known as a viable alternative for obstacle support identification to the well-studied filtered backprojection (FBP), which depends on a linearized forward scattering model. Of practical interest is the imaging of obstacles from sparse aperture far-field data under a fixed single frequency mode of operation. Under this scenario, the Tikhonov regularization typically applied to LSM produces poor images that fail to capture the obstacle boundary. In this paper, we employ an alternative regularization strategy based on constraining the sparsity of the solution's spatial gradient. Two regularization approaches based on the spatial gradient are developed. A numerical comparison to the FBP demonstrates that the new method's ability to account for aspect-dependent scattering permits more accurate reconstruction of concave obstacles, whereas a comparison to Tikhonov-regularized LSM demonstrates that the proposed approach significantly improves obstacle recovery with sparse-aperture data. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Image Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIGITAL image processing KW - SAMPLING (Statistics) KW - REGULARIZATION (Mathematics) KW - SCATTERING (Mathematics) KW - IMAGE reconstruction KW - MATHEMATICAL models KW - INVERSE problems (Differential equations) KW - Apertures KW - Backprojection KW - Electronic mail KW - Equations KW - Inverse problems KW - inverse scattering KW - linear sampling method (LSM) KW - Mathematical model KW - Sampling methods KW - Scattering KW - sparse regularization KW - total variation N1 - Accession Number: 73616122; Alqadah, Hatim F. 1 Ferrara, Matthew 2 Fan, Howard 1 Parker, Jason T. 3; Affiliation: 1: Department of Electrical and Computer Engineering, University of Cincinnati, Cincinnati, OH, USA 2: Matrix Research Inc., Dayton, OH, USA 3: Sensors Directorate, Air Force Research Laboratory, Wright Patterson AFB, OH, USA; Source Info: Apr2012, Vol. 21 Issue 4, p2062; Subject Term: DIGITAL image processing; Subject Term: SAMPLING (Statistics); Subject Term: REGULARIZATION (Mathematics); Subject Term: SCATTERING (Mathematics); Subject Term: IMAGE reconstruction; Subject Term: MATHEMATICAL models; Subject Term: INVERSE problems (Differential equations); Author-Supplied Keyword: Apertures; Author-Supplied Keyword: Backprojection; Author-Supplied Keyword: Electronic mail; Author-Supplied Keyword: Equations; Author-Supplied Keyword: Inverse problems; Author-Supplied Keyword: inverse scattering; Author-Supplied Keyword: linear sampling method (LSM); Author-Supplied Keyword: Mathematical model; Author-Supplied Keyword: Sampling methods; Author-Supplied Keyword: Scattering; Author-Supplied Keyword: sparse regularization; Author-Supplied Keyword: total variation; NAICS/Industry Codes: 541910 Marketing Research and Public Opinion Polling; Number of Pages: 13p; Document Type: Article L3 - 10.1109/TIP.2011.2177992 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73616122&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davis, V. A. AU - Mandell, M. J. AU - Cooke, D. L. AU - Wheelock, A. T. AU - Roth, C. J. T1 - Nascap-2k Self-Consistent Simulations of a VLF Plasma Antenna. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2012/04//4/1/2012 VL - 40 IS - 4 M3 - Article SP - 1239 EP - 1247 SN - 00933813 AB - We simulate the plasma response through tens of cycles of the Demonstration and Science Experiments (DSX) kilovolt near-square-wave very low frequency (VLF) (0.1–50 kHz) antenna in Medium Earth Orbit plasma with Nascap-2k. DSX is an Air Force Research Laboratory experiment that will explore the physics of electromagnetic wave injection from space transmitters, wave propagation, and wave-particle interactions in the magnetosphere. DSX will transmit and receive VLF waves and quantify their effect on the trapped electron populations in the magnetosphere. In these preflight calculations, the plasma is modeled with a hybrid particle-in-cell (PIC) approach with PIC ions and fluid barometric electron densities. The plasma response, collected ion currents, and chassis floating potential are computed self-consistently with a near-square-wave bias applied to the antennas. Particle injection and splitting are used to replenish the plasma depleted at the boundary, represent the thermal distribution, and maintain appropriately sized macroparticles. Therefore, limitation of current due to the thermal distribution of ions and the resulting angular momentum barrier is included. Above the ion plasma frequency, the plasma current lags the voltage by about 10^\circ, while below the ion plasma frequency, the current leads the voltage by about 7 ^\circ. The volume ion current shows periodic launch of blocks of energetic ions radially outward. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA antennas KW - SIMULATION methods & models KW - SPACE vehicles KW - SURFACE charging KW - VLF emissions KW - ELECTROSTATIC accelerators KW - Aerospace simulation KW - antenna theory KW - Antennas KW - Computational modeling KW - Electric potential KW - IEEE Potentials KW - Ions KW - plasma sheaths KW - Plasmas KW - space environment effects KW - space plasma KW - space plasma interactions KW - Space vehicles KW - surface charging N1 - Accession Number: 74223314; Davis, V. A. 1 Mandell, M. J. 1 Cooke, D. L. 2 Wheelock, A. T. 2 Roth, C. J. 3; Affiliation: 1: Science Applications International Corporation, McLean, VA, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA , USA 3: Atmospheric and Environmental Research, Inc., Lexington, MA, USA; Source Info: 4/1/2012, Vol. 40 Issue 4, p1239; Subject Term: PLASMA antennas; Subject Term: SIMULATION methods & models; Subject Term: SPACE vehicles; Subject Term: SURFACE charging; Subject Term: VLF emissions; Subject Term: ELECTROSTATIC accelerators; Author-Supplied Keyword: Aerospace simulation; Author-Supplied Keyword: antenna theory; Author-Supplied Keyword: Antennas; Author-Supplied Keyword: Computational modeling; Author-Supplied Keyword: Electric potential; Author-Supplied Keyword: IEEE Potentials; Author-Supplied Keyword: Ions; Author-Supplied Keyword: plasma sheaths; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: space environment effects; Author-Supplied Keyword: space plasma; Author-Supplied Keyword: space plasma interactions; Author-Supplied Keyword: Space vehicles; Author-Supplied Keyword: surface charging; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TPS.2012.2186569 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74223314&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sharma, Rajnikant AU - Beard, Randy W. AU - Taylor, Clark N. AU - Quebe, Stephen T1 - Graph-Based Observability Analysis of Bearing-Only Cooperative Localization. JO - IEEE Transactions on Robotics JF - IEEE Transactions on Robotics Y1 - 2012/04// VL - 28 IS - 2 M3 - Article SP - 522 EP - 529 SN - 15523098 AB - In this paper, we investigate the nonlinear observability properties of bearing-only cooperative localization. We establish a link between observability and a graph that represents measurements and communication between the robots. It is shown that graph theoretic properties like the connectivity and the existence of a path between two nodes can be used to explain the observability of the system. We obtain the maximum rank of the observability matrix without global information and derive conditions under which the maximum rank can be achieved. Furthermore, we show that for complete observability, all of the nodes in the graph must have a path to at least two different landmarks of known location. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Robotics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPH theory KW - LOCALIZATION theory KW - NONLINEAR theories KW - ROBOTS KW - PATHS & cycles (Graph theory) KW - MULTIAGENT systems KW - Multi-agent navigation KW - networked robots KW - non-linear observability analysis KW - Observability KW - Robot kinematics KW - Robot sensing systems KW - Vectors KW - Vehicles N1 - Accession Number: 74091037; Sharma, Rajnikant 1 Beard, Randy W. 1 Taylor, Clark N. 2 Quebe, Stephen 1; Affiliation: 1: Department of Electrical and Computer Engineering, Brigham Young University, Provo, USA 2: Air Force Research Laboratory , Wright-Patterson Air Force Base, USA; Source Info: Apr2012, Vol. 28 Issue 2, p522; Subject Term: GRAPH theory; Subject Term: LOCALIZATION theory; Subject Term: NONLINEAR theories; Subject Term: ROBOTS; Subject Term: PATHS & cycles (Graph theory); Subject Term: MULTIAGENT systems; Author-Supplied Keyword: Multi-agent navigation; Author-Supplied Keyword: networked robots; Author-Supplied Keyword: non-linear observability analysis; Author-Supplied Keyword: Observability; Author-Supplied Keyword: Robot kinematics; Author-Supplied Keyword: Robot sensing systems; Author-Supplied Keyword: Vectors; Author-Supplied Keyword: Vehicles; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TRO.2011.2172699 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74091037&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Su, Weifeng AU - Matyjas, John D. AU - Batalama, Stella T1 - Active Cooperation Between Primary Users and Cognitive Radio Users in Heterogeneous Ad-Hoc Networks. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing Y1 - 2012/04// VL - 60 IS - 4 M3 - Article SP - 1796 EP - 1805 SN - 1053587X AB - In this paper, we consider a heterogeneous ad-hoc network where primary users may cooperate with cognitive radio (CR) users for the transmission of their data. We propose a new cooperation protocol that allows CR users to relay primary user signals in exchange for some spectrum. The spectrum released by primary users is used by CR users for their own data transmission. The proposed protocol maximizes the primary user power savings and the CR users' own data transmission rate. In addition, it provides more robust (potentially continuous) service for CR users, compared to the conventional practice in cognitive networks where cognitive users transmit in the spectrum holes of primary users (i.e., their service is interrupted when primary users need to transmit and no spectrum holes are available). More specifically, we propose a CR user power allocation scheme that maximizes the rate of transmission of CR user own data, for any given CR user power budget and a given bandwidth released from the primary user. Furthermore, we determine a range of possible transmission power levels that can be used by the primary user during cooperation without sacrificing its target transmission rate, and we derive a necessary condition on the quality of the channel between the primary user and the CR user that enables cooperation. Extensive numerical and simulation studies illustrate our theoretical developments and show that cooperation between a primary and CR user may lead, for example, to up to 80% savings of primary user power when compared to a noncooperation scheme at the same transmission power level. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AD hoc networks (Computer networks) KW - DATA transmission systems KW - MIMO systems KW - RANDOM noise theory KW - SIGNAL-to-noise ratio KW - amplify-and-forward relaying KW - Bandwidth KW - cognitive radio KW - Cooperative communications KW - Data communication KW - heterogeneous ad-hoc networks KW - Optimized production technology KW - Protocols KW - Relays KW - Resource management N1 - Accession Number: 73611016; Su, Weifeng 1 Matyjas, John D. 2 Batalama, Stella 1; Affiliation: 1: Department of Electrical Engineering, State University of New York (SUNY) at Buffalo, Buffalo, NY, USA 2: Air Force Research Laboratory/RIT, Rome, NY, USA; Source Info: Apr2012, Vol. 60 Issue 4, p1796; Subject Term: AD hoc networks (Computer networks); Subject Term: DATA transmission systems; Subject Term: MIMO systems; Subject Term: RANDOM noise theory; Subject Term: SIGNAL-to-noise ratio; Author-Supplied Keyword: amplify-and-forward relaying; Author-Supplied Keyword: Bandwidth; Author-Supplied Keyword: cognitive radio; Author-Supplied Keyword: Cooperative communications; Author-Supplied Keyword: Data communication; Author-Supplied Keyword: heterogeneous ad-hoc networks; Author-Supplied Keyword: Optimized production technology; Author-Supplied Keyword: Protocols; Author-Supplied Keyword: Relays; Author-Supplied Keyword: Resource management; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TSP.2011.2181841 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73611016&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Midey, Anthony J. AU - Miller, Thomas M. AU - Viggiano, A.A. T1 - Survey of ion energetics properties of chemical weapon agent (CWA) breakdown products using G3(MP2) theory JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2012/04// VL - 315 M3 - Article SP - 1 EP - 7 SN - 13873806 AB - Abstract: The ion energetics properties of the major breakdown products of chemical weapons agents (CWAs) have been calculated using G3(MP2) theory to gain insight into which reactant ions in chemical ionization mass spectrometry (CIMS) would be optimal for detecting the CWAs. These results would also offer insight into which ions are formed in ion mobility spectrometry (IMS) detectors for CWA that use atmospheric pressure ionization sources. The ionization energies (IEs), proton affinities (PAs), electron affinities (EAs), and fluoride affinities (FAs) have been calculated for the major degradation products of sulfur mustard, the G-series nerve agents, and VX based on optimized structures using G3(MP2) theory. Electron attachment is found to yield an unstable parent anion or leads to an ionic structure with negative EA. The sulfur and nitrogen containing degradation products all have IEs<9eV, implying that charge exchange with NO+ should be a favorable detection route. The strictly alkylphosphorus compounds all have IEs around 10eV, implying that they would likely form a unique association product with NO+. All of the compounds with a Pmost favorably add an H+ on the O atom with PAs of ∼900kJmol−1. 2-(Diisopropylamino) ethane thiol (DESH) and ethyl-N,N-dimethyl phosphoramidate (EDPA) both have amine nitrogens that can readily accept a proton, with PAs>900kJmol−1. The least favorable protonation site is the oxygen that connects the phosphorus center to the different alkyl groups. The PAs indicate that non-dissociative proton transfer with protonated acetone or ammonia should provide good selectivity, likely with a large rate constant as seen in previous kinetics studies with CWA simulants. All of the breakdown products except 1,4-dithiane can attach a F− ion in at least one stable location. However, the corresponding FAs are too low to favor this process with the normal CIMS fluoride transfer anions. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL weapons KW - CHEMICAL ionization mass spectrometry KW - ION mobility spectroscopy KW - ATMOSPHERIC pressure KW - IONIZATION energy KW - CHEMICAL affinity KW - PHOSPHORUS compounds KW - Calculations KW - Chemical ionization KW - CWA KW - Ion energetics KW - Ion-molecule reactions N1 - Accession Number: 74114631; Midey, Anthony J.; Email Address: anthony.midey@excellims.com Miller, Thomas M. Viggiano, A.A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, NM 87117-5776, United States; Source Info: Apr2012, Vol. 315, p1; Subject Term: CHEMICAL weapons; Subject Term: CHEMICAL ionization mass spectrometry; Subject Term: ION mobility spectroscopy; Subject Term: ATMOSPHERIC pressure; Subject Term: IONIZATION energy; Subject Term: CHEMICAL affinity; Subject Term: PHOSPHORUS compounds; Author-Supplied Keyword: Calculations; Author-Supplied Keyword: Chemical ionization; Author-Supplied Keyword: CWA; Author-Supplied Keyword: Ion energetics; Author-Supplied Keyword: Ion-molecule reactions; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijms.2012.01.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74114631&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Scott-Emuakpor, Onome AU - George, Tommy AU - Cross, Charles AU - Wertz, John AU - Herman Shen, M.-H. T1 - A new distortion energy-based equivalent stress for multiaxial fatigue life prediction JO - International Journal of Non-Linear Mechanics JF - International Journal of Non-Linear Mechanics Y1 - 2012/04// VL - 47 IS - 3 M3 - Article SP - 29 EP - 37 SN - 00207462 AB - Abstract: A new equivalent stress amplitude expression has been developed for the assessment of fatigue life in components under multiaxial loading. The expression was generated by incorporating non-linear/plastic stress–strain relation into a mechanical energy calculation, and then applying the calculation to the distortion energy theory for a cyclic loading case. Therefore, the new uniaxial equivalent stress expression determines an appropriate stress amplitude value for multiaxial cyclic loading. The purpose of the equivalent stress value is to determine multiaxial fatigue failure using an energy-based fatigue life prediction criterion. The governing understanding behind the criterion states that the physical damage quantity for failure is equal to the accumulated strain energy in a monotonic fracture, which is also equal to the accumulated strain energy during fatigue failure. Using the new equivalent stress amplitude expression and the energy-based life prediction method, a comparison is made between prediction results and multiaxial empirical data. The multiaxial data was acquired by a vibration-based biaxial bending fatigue test and a torsion fatigue test with an assumed axial misalignment. The results of the comparison provide encouragement regarding the capability of the newly developed equivalent stress amplitude expression for fatigue life prediction. [Copyright &y& Elsevier] AB - Copyright of International Journal of Non-Linear Mechanics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE life (Materials science) KW - SHEAR waves KW - STRAINS & stresses (Mechanics) KW - AXIAL loads KW - PREDICTION theory KW - PLASTICITY KW - FRACTURE mechanics KW - Fatigue KW - Multiaxial KW - Non-linear strain energy N1 - Accession Number: 74991902; Scott-Emuakpor, Onome 1; Email Address: onome.scott-emuakpor@wpafb.af.mil George, Tommy 1 Cross, Charles 1 Wertz, John 2 Herman Shen, M.-H. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, United States 2: Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH 43210, United States; Source Info: Apr2012, Vol. 47 Issue 3, p29; Subject Term: FATIGUE life (Materials science); Subject Term: SHEAR waves; Subject Term: STRAINS & stresses (Mechanics); Subject Term: AXIAL loads; Subject Term: PREDICTION theory; Subject Term: PLASTICITY; Subject Term: FRACTURE mechanics; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Multiaxial; Author-Supplied Keyword: Non-linear strain energy; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijnonlinmec.2011.12.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74991902&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Campbell, Richard A. AU - Pickett, Brent M. AU - Saponara, Valeria La AU - Dierdorf, Douglas T1 - Thermal Characterization and Flammability of Structural Epoxy Adhesive and Carbon/Epoxy Composite with Environmental and Chemical Degradation. JO - Journal of Adhesion Science & Technology JF - Journal of Adhesion Science & Technology Y1 - 2012/04// VL - 26 IS - 7 M3 - Article SP - 889 EP - 910 PB - Taylor & Francis Ltd SN - 01694243 AB - This study investigates the thermal degradation and flammability properties of structural epoxy adhesive and carbon/epoxy composite subject to environmental and chemical agents typical of aerospace operations: water, jet fuel, hydraulic fluid, fuel additive (not mixed in jet fuel), at three conditioning temperatures similar to those experienced by an aerospace composite structure during its operation. Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA) gave results consistent with those from hardness tests on control and conditioned specimens: they provide evidence for the severity of the adhesive's degradation due to hydraulic fluid (for conditioning temperatures higher than room tem-perature) or fuel additive (at all temperatures of this study). TGA scans show the thermal degradation of carbon/epoxy composite by fuel additive at room temperature. Through Microscale Combustion Calorime-try (MCC), the flammability properties of selected specimens were measured. Results for the treatment at room temperature confirmed those from the TGA, DSC and hardness tests. The MCC showed a decreased heat release rate for the adhesive samples treated at high temperature in hydraulic fluid and fuel additive. This may be possibly due to the increased amount of char compared to the room temperature treatments. These new results raise concerns regarding the durability of structural epoxy adhesive contaminated by hydraulic fluid or fuel additive, under simplified test conditions (no prior mechanical damage, no coat-ings/sealants, no mixing of fluids). [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Adhesion Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOPHYSICAL properties KW - DECOMPOSITION (Chemistry) KW - EPOXY compounds KW - ADHESIVES KW - CARBON composites KW - FLAMMABILITY KW - SERVICE life (Engineering) KW - HYDRAULIC fluids KW - THERMOGRAVIMETRY KW - durability KW - flammability KW - Structural adhesive KW - thermogravimetric analysis N1 - Accession Number: 79783447; Campbell, Richard A. 1 Pickett, Brent M. 2 Saponara, Valeria La 3; Email Address: vIasaponara@ucdavis.edu Dierdorf, Douglas 1; Email Address: ddierdorf@ara.com; Affiliation: 1: Applied Research Associates, Inc., 4300 San Mateo Blvd NE, Ste A-220, Albuquerque, NM 87110 , USA 2: Air Force Research Laboratory, 139 Barnes Drive, Suite 2, Tyndall AFB, FL 32403-5323, USA 3: Mechanical and Aerospace Engineering, University of California, Davis, CA 95616-5294, USA; Source Info: Apr2012, Vol. 26 Issue 7, p889; Subject Term: THERMOPHYSICAL properties; Subject Term: DECOMPOSITION (Chemistry); Subject Term: EPOXY compounds; Subject Term: ADHESIVES; Subject Term: CARBON composites; Subject Term: FLAMMABILITY; Subject Term: SERVICE life (Engineering); Subject Term: HYDRAULIC fluids; Subject Term: THERMOGRAVIMETRY; Author-Supplied Keyword: durability; Author-Supplied Keyword: flammability; Author-Supplied Keyword: Structural adhesive; Author-Supplied Keyword: thermogravimetric analysis; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325520 Adhesive Manufacturing; NAICS/Industry Codes: 325999 All other miscellaneous chemical product manufacturing; NAICS/Industry Codes: 325998 All Other Miscellaneous Chemical Product and Preparation Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 324191 Petroleum Lubricating Oil and Grease Manufacturing; Number of Pages: 22p; Illustrations: 1 Black and White Photograph, 5 Charts, 11 Graphs; Document Type: Article L3 - 10.1163/156856111X593621 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79783447&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ariyawansa, Gamini AU - Grupen, Matt AU - Duran, Joshua M. AU - Scheihing, John E. AU - Nelson, Thomas R. AU - Eismann, Michael T. T1 - Design and modeling of InAs/GaSb type II superlattice based dual-band infrared detectors. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/04// VL - 111 IS - 7 M3 - Article SP - 073107 EP - 073107-10 PB - American Institute of Physics SN - 00218979 AB - The objective of this paper is to provide a credible analysis for predicting the spectral responsivity of InAs/GaSb/AlSb type-II superlattice (T2SL) based dual-band infrared photodetectors. An overview of the T2SL based design criteria is given and new dual-band detector architecture with a model dual-band detector structure designed to detect light in the mid-wave infrared (MWIR) and long-wave infrared (LWIR) ranges is presented. The absorption coefficient is modeled empirically and the quantum efficiency spectra are calculated using a numerical model and Hovel's analytical expressions. The spectral cross-talk due to the response of the LWIR channel to residual MWIR light is also investigated. It is shown that the significance of this cross-talk primarily depends on the temperature of the target (scene) being detected. For MWIR/MWIR (two bands in the MWIR range) dual-band detectors, the spectral cross-talk becomes significant irrespective of the target temperature. Eliminating the spectral cross-talk in T2SL dual-band detectors presently remains a challenge. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - INFRARED detectors KW - INFRARED equipment KW - INDIUM arsenide KW - OPTOELECTRONIC devices N1 - Accession Number: 74279365; Ariyawansa, Gamini 1 Grupen, Matt 1 Duran, Joshua M. 1 Scheihing, John E. 1 Nelson, Thomas R. 1 Eismann, Michael T. 1; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, 2241 Avionics Circle, Wright-Patterson Air Force Base, Ohio 45433-7322,; Source Info: Apr2012, Vol. 111 Issue 7, p073107; Subject Term: SUPERLATTICES; Subject Term: INFRARED detectors; Subject Term: INFRARED equipment; Subject Term: INDIUM arsenide; Subject Term: OPTOELECTRONIC devices; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.3702581 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74279365&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hoff, B. W. AU - Chen, C. H. AU - Horwath, J. C. AU - Haworth, M. D. AU - Mardahl, P. J. AU - Heidger, S. L. T1 - Wide aperture permanent magnet solenoid. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/04// VL - 111 IS - 7 M3 - Article SP - 07A711 EP - 07A711-3 PB - American Institute of Physics SN - 00218979 AB - Various configurations of rare earth permanent magnet solenoids with a large bore were simulated using finite element computer modeling. The configuration effect on the axial field, Bz, and its uniformity, ΔBz, was analyzed. The magnetic orientation of individual segments and the aspect-ratio of the solenoid have a significant effect on Bz and ΔBz. Two-layered configurations assembled with trapezoidal or arc segments result in a more uniform Bz compared to configurations assembled with five-faced polyhedrons. The two-layered configuration also has the advantage of easier fabrication. A permanent magnet solenoid prototype, based on the two-layered arc segment configuration and built using Nd-Fe-B magnets, was experimentally tested. The solenoid was designed to have a length to inner diameter ratio of approximately 5:3 and a peak axial field magnitude of 1.8 kGauss. Experimental measurements agree with simulation predictions to within < 5%. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETS KW - RARE earths KW - SOLENOIDS KW - PERMANENT magnets KW - MAGNETIC fields KW - FIELD theory (Physics) N1 - Accession Number: 74279727; Hoff, B. W. 1 Chen, C. H. 2,3 Horwath, J. C. 4 Haworth, M. D. 1 Mardahl, P. J. 1 Heidger, S. L. 1; Affiliation: 1: Air Force Research Laboratory (AFRL) Directed Energy Directorate, Kirtland Air Force Base, New Mexico 87117, 2: Magnetics Lab, University of Dayton, Dayton, Ohio 45469, 3: GE Global Research, Niskayuna, New York 12309, 4: Air Force Research Laboratory (AFRL) Propulsion Directorate, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: Apr2012, Vol. 111 Issue 7, p07A711; Subject Term: MAGNETS; Subject Term: RARE earths; Subject Term: SOLENOIDS; Subject Term: PERMANENT magnets; Subject Term: MAGNETIC fields; Subject Term: FIELD theory (Physics); Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.3673808 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74279727&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Crouse, C. A. AU - Michel, E. AU - Shen, Y. AU - Knutson, S. J. AU - Hardenstein, B. K. AU - Spowart, J. E. AU - Leontsev, S. O. AU - Semiatin, S. L. AU - Horwath, J. AU - Turgut, Z. AU - Lucas, M. S. T1 - Effect of surfactant molecular weight on particle morphology of SmCo5 prepared by high energy ball milling. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/04// VL - 111 IS - 7 M3 - Article SP - 07A724 EP - 07A724-3 PB - American Institute of Physics SN - 00218979 AB - Surfactant-assisted high energy ball milling (HEBM) is a widely used technique for producing nanostructured magnetic materials with oleic acid (OA) being the most commonly utilized surfactant reported in literature to date. No conclusive explanation has been presented for the wide use of OA and only a few studies have deviated from its use. OA has a boiling point of 360 °C which presents issues for complete removal of the surfactant after the HEBM process. Exposing the nanostructured materials to the high temperatures required for surfactant removal is known to result in grain growth and oxidation. In other studies, select surfactant systems, such as octanoic acid or oleylamine, have been used, however, a systematic study examining the dependence of surfactant selection on overall particle (flake) morphology has yet to be performed. In this study, we have qualitatively and quantitatively examined the effects of surfactant selection on the morphology and magnetic properties of SmCo5 utilizing surfactants with lower boiling points that are structurally similar to OA. Our results demonstrate that there was little change in the morphological and magnetic properties for the different surfactants. The implication is that lower boiling point surfactants may be used for HEBM, which require less severe conditions for surfactant removal after milling thereby preserving the integrity of the powders. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE active agents KW - MAGNETIC properties KW - NANOSTRUCTURED materials KW - NANOTECHNOLOGY KW - NANOCOMPOSITE materials KW - OLEIC acid N1 - Accession Number: 74279746; Crouse, C. A. 1,2 Michel, E. 1,3 Shen, Y. 1,4 Knutson, S. J. 1,5 Hardenstein, B. K. 1,5 Spowart, J. E. 1 Leontsev, S. O. 1,4 Semiatin, S. L. 1 Horwath, J. 1 Turgut, Z. 1,2 Lucas, M. S. 1,6; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 2: UES Inc., Wright-Patterson AFB, Ohio 45433, 3: Wright State University, Dayton, Ohio 45435, 4: University of Dayton Research Institute, Dayton, Ohio 45469, 5: University of Dayton, Dayton, Ohio 45469, 6: UTC Inc., 1270 North Fairfield Road, Dayton, Ohio 45432,; Source Info: Apr2012, Vol. 111 Issue 7, p07A724; Subject Term: SURFACE active agents; Subject Term: MAGNETIC properties; Subject Term: NANOSTRUCTURED materials; Subject Term: NANOTECHNOLOGY; Subject Term: NANOCOMPOSITE materials; Subject Term: OLEIC acid; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.3677760 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74279746&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alam, M. T. AU - Manoharan, M. P. AU - Haque, M. A. AU - Muratore, C. AU - Voevodin, A. T1 - Influence of strain on thermal conductivity of silicon nitride thin films. JO - Journal of Micromechanics & Microengineering JF - Journal of Micromechanics & Microengineering Y1 - 2012/04// VL - 22 IS - 4 M3 - Article SP - 1 EP - 8 SN - 13616439 AB - We present a micro-electro-mechanical system-based experimental technique to measure thermal conductivity of freestanding ultra-thin films of amorphous silicon nitride (Si3N4) as a function of mechanical strain. Using a combination of infrared thermal micrography and multi-physics simulation, we measured thermal conductivity of 50 nm thick silicon nitride films to observe it decrease from 2.7 W (m K)-1 at zero strain to 0.34 W (m K)-1 at about 2.4% tensile strain. We propose that such strong strain-thermal conductivity coupling is due to strain effects on fraction-phonon interaction that decreases the dominant hopping mode conduction in the amorphous silicon nitride specimens. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Micromechanics & Microengineering is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHONONS KW - SILICON nitride films KW - STRAINS & stresses (Mechanics) KW - THERMAL conductivity KW - MICROELECTROMECHANICAL systems KW - AMORPHOUS silicon N1 - Accession Number: 73497466; Alam, M. T. 1 Manoharan, M. P. 1 Haque, M. A. 1,2; Email Address: mah37@psu.edu Muratore, C. 2 Voevodin, A. 2; Affiliation: 1: Department of Mechanical and Nuclear Engineering, Penn State University, University Park, PA 16802, USA 2: Air Force Research Laboratory, Thermal Sciences and Materials Branch, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Apr2012, Vol. 22 Issue 4, p1; Subject Term: PHONONS; Subject Term: SILICON nitride films; Subject Term: STRAINS & stresses (Mechanics); Subject Term: THERMAL conductivity; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: AMORPHOUS silicon; Number of Pages: 8p; Document Type: Article L3 - 10.1088/0960-1317/22/4/045001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73497466&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Patterson, Robert Earl T1 - Cognitive engineering, cognitive augmentation, and information display. JO - Journal of the Society for Information Display JF - Journal of the Society for Information Display Y1 - 2012/04// VL - 20 IS - 4 M3 - Other SP - 208 EP - 213 SN - 10710922 AB - - From a perspective of cognitive engineering, this paper presents eight principles of good display design based on human cognition: (1) displays that divide attention will increase the cognitive load on working memory; (2) displays that continuously present the same information may compensate for the decay of short-term memory; (3) displays that assist the viewer in mentally chunking information will decrease the cognitive load on working memory; (4) displays that present icons or images to direct attention to important visual stimuli will likely minimize inattentional blindness; (5) displays that help minimize attentional distractions and help focus attention on a given task will minimize the burden on working memory; (6) displays that present cues composed of strong singletons will capture and engage exogenous attention; (7) displays that help the viewer make a mental connection between an analogue and a target will assist in the induction of analogical reasoning; (8) displays that present over time multiple exposures consisting of statistical regularities may promote implicit learning and expertise development. Thus, information displays of the future can systematically engage high-level human cognitive processes for purposes of improving human performance on a variety of tasks found in education, the military, and many other applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Society for Information Display is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - USER-centered system design KW - RESEARCH KW - INFORMATION display systems KW - COGNITION -- Research KW - SHORT-term memory KW - VISUAL perception -- Research KW - IMPLICIT learning KW - cognitive augmentation KW - Cognitive engineering KW - human cognition N1 - Accession Number: 101072499; Patterson, Robert Earl 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, RHA/711 HPW, Dayton, OH 45433.; Source Info: Apr2012, Vol. 20 Issue 4, p208; Subject Term: USER-centered system design; Subject Term: RESEARCH; Subject Term: INFORMATION display systems; Subject Term: COGNITION -- Research; Subject Term: SHORT-term memory; Subject Term: VISUAL perception -- Research; Subject Term: IMPLICIT learning; Author-Supplied Keyword: cognitive augmentation; Author-Supplied Keyword: Cognitive engineering; Author-Supplied Keyword: human cognition; Number of Pages: 6p; Document Type: Other L3 - 10.1889/JSID20.4.208 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=101072499&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Shibayan AU - Suwas, Satyam AU - Tamirisakandala, S. AU - Srinivasan, R. AU - Miracle, D.B. T1 - Microstructure and texture evolution during β extrusion of boron modified Ti–6Al–4V alloy JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2012/04// VL - 540 M3 - Article SP - 152 EP - 163 SN - 09215093 AB - Abstract: Boron addition to conventional titanium alloys below the eutectic limit refines the cast microstructure and improves mechanical properties. The present work explores the influence of hypoeutectic boron addition on the microstructure and texture evolution in Ti–6Al–4V alloy under β extrusion. The β extruded microstructure of Ti–6Al–4V is characterized by shear bands parallel to the extrusion direction. In contrast, the extruded Ti–6Al–4V–0.1B alloy shows a regular β worked microstructure consisting of fine prior β grains and acicular α-lamellae with no signs of the microstructural instability. Crystallographic texture after extrusion was almost identical for the two alloys indicating the similarity in their transformation behavior, which is attributed to complete dynamic recrystallization during β processing. Microstructural features as well as crystallographic texture indicate dominant grain boundary related deformation processes for the boron modified alloy that leads to homogeneous deformation without instability formation. The absence of shear bands has significant technological importance as far as the secondary processing of boron added alloys in (α+β)-phase field are concerned. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM-aluminum-vanadium alloys KW - MICROSTRUCTURE KW - METALS -- Texture KW - BORON KW - EUTECTIC alloys KW - SHEAR (Mechanics) KW - EXTRUSION process KW - CRYSTAL grain boundaries KW - CRYSTALLOGRAPHY KW - PHASE transformations (Physics) KW - EBSD KW - Mechanical characterization KW - Orientation relationship KW - Phase transformation KW - Titanium alloy N1 - Accession Number: 73339177; Roy, Shibayan 1 Suwas, Satyam 1; Email Address: satyamsuwas@materials.iisc.ernet.in Tamirisakandala, S. 2 Srinivasan, R. 3 Miracle, D.B. 4; Affiliation: 1: Department of Materials Engineering, Indian Institute of Science, Bangalore, India 2: FMW Composite Systems Inc., Bridgeport, WV, USA 3: Mechanical and Material Engineering Department, Wright State University, Dayton, USA 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, USA; Source Info: Apr2012, Vol. 540, p152; Subject Term: TITANIUM-aluminum-vanadium alloys; Subject Term: MICROSTRUCTURE; Subject Term: METALS -- Texture; Subject Term: BORON; Subject Term: EUTECTIC alloys; Subject Term: SHEAR (Mechanics); Subject Term: EXTRUSION process; Subject Term: CRYSTAL grain boundaries; Subject Term: CRYSTALLOGRAPHY; Subject Term: PHASE transformations (Physics); Author-Supplied Keyword: EBSD; Author-Supplied Keyword: Mechanical characterization; Author-Supplied Keyword: Orientation relationship; Author-Supplied Keyword: Phase transformation; Author-Supplied Keyword: Titanium alloy; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.msea.2012.01.120 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73339177&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Minteer, Shelley D. AU - Atanassov, Plamen AU - Luckarift, Heather R. AU - Johnson, Glenn R. T1 - New materials for biological fuel cells JO - Materials Today JF - Materials Today Y1 - 2012/04// VL - 15 IS - 4 M3 - Article SP - 166 EP - 173 SN - 13697021 AB - Major improvements in biological fuel cells over the last ten years have been the result of the development and application of new materials. These new materials include: nanomaterials, such as nanotubes and graphene, that improve the electron transfer between the biocatalyst and electrode surface; materials that provide improved stability and immobilization of biocatalysts; materials that increase the conductivity and surface area of the electrodes; and materials that aid facile mass transport. With a focus on enzymatic biological fuel cell technology, this brief review gives an overview of the latest developments in each of these material science areas and describes how this progress has improved the performance of biological fuel cells to yield a feasible technology. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Today is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROBIAL fuel cells KW - NANOTUBES KW - GRAPHENE KW - CHARGE exchange KW - IMMOBILIZED enzymes KW - NANOSTRUCTURED materials KW - ELECTRODES KW - ELECTRIC conductivity N1 - Accession Number: 75170977; Minteer, Shelley D. 1; Email Address: minteer@chem.utah.edu Atanassov, Plamen 2 Luckarift, Heather R. 3,4 Johnson, Glenn R. 4; Affiliation: 1: Department of Chemistry and Materials Science and Engineering, University of Utah, 315 S 1400 E Rm 2020, Salt Lake City, UT 84112, USA 2: Center for Emerging Energy Technologies, University of New Mexico, Albuquerque, NM 87131, USA 3: Universal Technology Corporation, 1270 N. Fairfield Drive, Dayton, OH, 45432, USA 4: Airbase Sciences, Air Force Research Laboratory, Tyndall Air Force Base, Florida 32403, USA; Source Info: Apr2012, Vol. 15 Issue 4, p166; Subject Term: MICROBIAL fuel cells; Subject Term: NANOTUBES; Subject Term: GRAPHENE; Subject Term: CHARGE exchange; Subject Term: IMMOBILIZED enzymes; Subject Term: NANOSTRUCTURED materials; Subject Term: ELECTRODES; Subject Term: ELECTRIC conductivity; Number of Pages: 8p; Document Type: Article L3 - 10.1016/S1369-7021(12)70070-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75170977&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hall, RB AU - Rajagopal, KR T1 - Diffusion of a fluid through an anisotropically chemically reacting thermoelastic body within the context of mixture theory. JO - Mathematics & Mechanics of Solids JF - Mathematics & Mechanics of Solids Y1 - 2012/04// VL - 17 IS - 2 M3 - Article SP - 131 EP - 164 SN - 10812865 AB - A mixture theory approach is used to analyze the change in response characteristics of an anisotropic, non-linear viscoelastic fluid diffusing through a finitely deforming thermoelastic body of arbitrary symmetry wherein the fluid chemically reacts with the solid. It is assumed for simplicity that it is possible to characterize the reaction as having a single step and as one in which the reaction products remain within the body, thereby modifying the solid constituent. The effects of the reaction on the solid that render it anisotropic are quantified by means of a tensorial parameter that tracks the extent of the reaction in different directions. Both diffusion-dominated (diffusion of the reactants is far more rapid than the reaction) and reaction-dominated (the reaction is far more rapid than the diffusion of the reactants) processes are considered. Constitutive equations are derived from the requirement that the rate of entropy production be maximized, which makes it possible to characterize the behavior of the body through the specification of three scalar functions: the rate of entropy production function for the mixture, and the Helmholtz free energies of each of the constituents. It is noted that the model may be applied to regions of bodies with locally homogeneous damage, that is, regions damaged at a small enough scale to mimic an anisotropically porous continuum. Macroscale damage may also be modeled via the boundary conditions described in Section 5. [ABSTRACT FROM PUBLISHER] AB - Copyright of Mathematics & Mechanics of Solids is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANISOTROPY -- Mathematical models KW - SYMMETRY (Mathematics) KW - ENTROPY KW - HELMHOLTZ equation KW - BOUNDARY value problems KW - anisotropic KW - chemical KW - deformation KW - diffusion KW - maximum dissipation KW - mixture KW - reaction KW - thermodynamics N1 - Accession Number: 73525829; Hall, RB 1 Rajagopal, KR 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, USA 2: Texas A&M University, Department of Mechanical Engineering, College Station, TX, USA; Source Info: Apr2012, Vol. 17 Issue 2, p131; Subject Term: ANISOTROPY -- Mathematical models; Subject Term: SYMMETRY (Mathematics); Subject Term: ENTROPY; Subject Term: HELMHOLTZ equation; Subject Term: BOUNDARY value problems; Author-Supplied Keyword: anisotropic; Author-Supplied Keyword: chemical; Author-Supplied Keyword: deformation; Author-Supplied Keyword: diffusion; Author-Supplied Keyword: maximum dissipation; Author-Supplied Keyword: mixture; Author-Supplied Keyword: reaction; Author-Supplied Keyword: thermodynamics; Number of Pages: 34p; Document Type: Article; Full Text Word Count: 1233 L3 - 10.1177/1081286511407754 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73525829&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Folsom, Thomas C. T1 - Finding Superman in Cyberspace (Poisoned Flowers, Pt. 1): Resolving Focal Point and Trademark Disputes on the Internet and in Cyberspace by Rewriting Code. JO - McGeorge Law Review JF - McGeorge Law Review Y1 - 2012/04// VL - 43 IS - 2 M3 - Article SP - 199 EP - 300 SN - 15209245 AB - In cyberspace, dynamically coded focal points (some but not all of which include trademarked expressions) don't just provide salient references; they can actually deliver a person's augmented presence to a location. Placing reliable focal points as navigational markers in coded space is useful. Indexing them is even better. Both these activities support the public good by providing a virtual map to cyberspace, thereby promoting access, navigation, information-activity, and trust among vulnerable augmented presences (the capacities of persons perceived within, and perceiving, an objective cyberspace, but without the full sensory and other anchors provided in ordinary space). In an objective cyberspace that relies on a virtual map featuring dynamically coded focal points functioning as markers and spoilers, addresses, magnets, roadblocks, or detours, there is an opportunity to describe norms, to distinguish forms of offensive conduct in respect of new technological uses beyond trademark, and to prescribe effective, modest, and technologically reasonable remedies. I propose that conduct which: (a) alters the virtual map, (b) plants deceptive focal points, (c) ambushes a user of focal points with uninvited, invasive, or false invitations, or (d) expropriates, blocks, or spoils focal points otherwise available should be an actionable focal point offense All focal point offenses involve expressions functioning as "markers" or "spoilers" in cyberspace. Some of the more effective focal points incorporate trademarked expressions. Quite apart from trademark-related law, I claim the specified focal point offense in cyberspace constitutes independently actionable misrepresentation or fraud, misappropriation or theft, spoilage or unfair competition (and, in some cases, unjust enrichment). While some focal point offenses might also constitute trademark infringement, it is not immediately helpful to try to resolve all focal point offenses in cyberspace by ordinary principles of trademark law as developed in ordinary space. "Ordinary" trademark law, as currently misapplied to focal point conflicts in cyberspace, has raised curiously novel defenses and other aberrations that more frequently obscure than reveal what is happening in cyberspace while threatening to deface trademark law itself. Current trademark likelihood of confusion factors, even when carefully applied, cannot reliably predict a likelihood of confusion by "invisible" or "attenuated" uses of expressions in cyberspace that incorporate trademarked terms, much less resolve the real problems caused by focal point offenses. In a prior article, Space Pirates in Cyberspace,3 I proposed the first half of a comprehensive solution: a modified set of trademark likelihood-of-confusion factors for such cases. Now I propose the focal point offense as the other half of the solution and I explicitly link the trademark-style and focal point-style offenses into one unified theory. The unified theory is recognizably derived from existing patterns of law already regulating misrepresentation, misappropriation, and unfair competition, and can easily coexist with current trademark-related law. Not only is it better than any other competing explanation of, or proposal for how to deal with invisible or attenuated trademark conflicts in cyberspace, but it is the first theory ever to consider the problem of dynamic focal points in cyberspace. Moreover, it is available for immediate implementation because it is practical, principled, and predictable. It works, it is efficient, and it is authorized. [ABSTRACT FROM AUTHOR] AB - Copyright of McGeorge Law Review is the property of University of the Pacific, McGeorge School of Law and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CYBERSPACE KW - TRADEMARKS -- Law & legislation KW - INTERNET -- Law & legislation KW - UNFAIR competition KW - FRAUD KW - TRADEMARK infringement N1 - Accession Number: 92001767; Folsom, Thomas C. 1,2; Affiliation: 1: Professor, Regent University School of Law 2: Georgetown University Law Center, B.S., United States Air Force Academy; Source Info: Apr2012, Vol. 43 Issue 2, p199; Subject Term: CYBERSPACE; Subject Term: TRADEMARKS -- Law & legislation; Subject Term: INTERNET -- Law & legislation; Subject Term: UNFAIR competition; Subject Term: FRAUD; Subject Term: TRADEMARK infringement; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; Number of Pages: 102p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92001767&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McAvin, James C. AU - Swanson, Katherine I. AU - Chan, Adeline S. T. AU - Quintana, Miguel AU - Coleman, Russell E. T1 - Leishmania Detection in Sand Flies Using a Field-Deployable Real-Time Analytic System. JO - Military Medicine JF - Military Medicine Y1 - 2012/04// VL - 177 IS - 4 M3 - Article SP - 460 EP - 466 PB - AMSUS SN - 00264075 AB - We describe here the development and evaluation of advanced vector surveillance analytic technologies for real-time leishmaniasis risk assessment. Leishmania genus and visceral leishmaniasis causative agent-specific dual fluorogenic-probe hydrolysis (TaqMan), thermally stable (freeze-dried) polymerase chain reaction assays were developed using field-durable analytic instrumentation. In laboratory testing with a panel of diverse Leishmania species from culture and infected sand flies, the sensitivity and specificity of both assays were 100% concordant with DNA sequencing. In specificity testing with Leishmania genetic near neighbors, clinically significant organisms, and human genomic DNA, no detectable fluorescence above background was observed. Field evaluation was conducted in southern Iraq using wild sand flies. In field testing, Leishmania genus assay was 100% sensitive and 96% specific with a single false-positive result. The visceral leishmaniasis genotype assay was 100% sensitive and 100% specific compared to DNA sequencing. Thermally stable polymerase chain reaction assays vastly simplified transportation and storage. Assay preparation and analysis required less than 2 hours. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEISHMANIASIS -- Diagnosis KW - POLYMERASE chain reaction KW - ASSAYING KW - NUCLEOTIDE sequence KW - HUMAN genome N1 - Accession Number: 74456722; McAvin, James C. 1,2,3 Swanson, Katherine I. 1 Chan, Adeline S. T. 1 Quintana, Miguel 4 Coleman, Russell E. 1,5; Affiliation: 1: Division of Entomology, Walter Reed Army Institute of Research, 503 Robert Grant Avenue, Silver Spring, MD 20910 2: Molecular Epidemiology, Brooks City-Base, 2730 Louis Bauer Drive, San Antonio, TX 78235 3: 407th Expeditionary Medical Support Hospital, United States Air Force, Tallil Air Base, Iraq 4: United States Army Center for Health Promotion and Preventive Medicine-West, 5th & Blaine Street, Fort Lewis, WA 98433-9500 5: 520th Theater Army Medical Laboratory, United Stales Army, Tallil Air Base, Iraq; Source Info: Apr2012, Vol. 177 Issue 4, p460; Subject Term: LEISHMANIASIS -- Diagnosis; Subject Term: POLYMERASE chain reaction; Subject Term: ASSAYING; Subject Term: NUCLEOTIDE sequence; Subject Term: HUMAN genome; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74456722&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kettwich, Sharon C. AU - Pierson, Scott N. AU - Peloquin, Andrew J. AU - Mabry, Joseph M. AU - Iacono, Scott T. T1 - Anomalous macromolecular assembly of partially fluorinated polyhedral oligomeric silsesquioxanes. JO - New Journal of Chemistry JF - New Journal of Chemistry Y1 - 2012/04// VL - 36 IS - 4 M3 - Article SP - 941 EP - 946 SN - 11440546 AB - Fluorinated polyhedral oligomeric silsesquioxane (F-POSS) compounds were prepared by employing a facile, corner-capping methodology. Using this modular approach, fluorocarbons with varying degree of fluorine content and architecture were installed on the POSS cage of a partially condensed trisilanol. The melting properties of the F-POSS derivatives showed various influence by Si…F contacts via intermolecular packing assembly. All F-POSS compounds were characterized by 1H, 13C, 19F, and 29Si NMR spectrometry, X-ray crystallography, thermal and elemental combustion analysis. [ABSTRACT FROM AUTHOR] AB - Copyright of New Journal of Chemistry is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICONES KW - OLIGOMERS KW - MACROMOLECULAR synthesis KW - FLUOROPOLYMERS KW - INTERMOLECULAR interactions KW - POLYHEDRAL functions N1 - Accession Number: 100901612; Kettwich, Sharon C. 1 Pierson, Scott N. 1 Peloquin, Andrew J. 1 Mabry, Joseph M. 2 Iacono, Scott T. 1; Affiliation: 1: Department of Chemistry, United States Air Force Academy, 2355 Fairchild Drive, Suite 2N225, USAF Academy, CO 80840, USA 2: Air Force Research Laboratory, Propulsion Directorate, 10 E. Saturn Boulevard, Edwards Air Force Base, CA 93524, USA; Source Info: Apr2012, Vol. 36 Issue 4, p941; Subject Term: SILICONES; Subject Term: OLIGOMERS; Subject Term: MACROMOLECULAR synthesis; Subject Term: FLUOROPOLYMERS; Subject Term: INTERMOLECULAR interactions; Subject Term: POLYHEDRAL functions; Number of Pages: 6p; Document Type: Article L3 - 10.1039/c2nj20922e UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100901612&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Phillips, P. L. AU - Brockman, R. A. AU - John, R. T1 - Modelling Strategies for Property Identification Based on Full-Field Surface Displacement Data. JO - Strain JF - Strain Y1 - 2012/04// VL - 48 IS - 2 M3 - Article SP - 143 EP - 152 PB - Wiley-Blackwell SN - 00392103 AB - The use of full-field displacement measurements in mechanical testing provides detailed response information that can be used, in conjunction with modelling and optimisation, for precise material property identification. One limitation of this technique is that the collection of response data and the sectioning of a specimen to reveal the material microstructure are both destructive tests and mutually exclusive, as the displacement measurement occurs only on the exposed surface. Therefore, modelling of an experiment to interpret a full-field experiment requires assumptions about the structure of the material below the visible surface. This study evaluates the effects of several possible modelling assumptions on the errors in model-predicted response and on the resulting material property estimates. A 3-D microstructural model, for which the subsurface grain geometry and orientations are known, provides the basis for comparison of several common modelling assumptions based on the grain geometry and orientations on the visible surface of a specimen. [ABSTRACT FROM AUTHOR] AB - Copyright of Strain is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MECHANICS (Physics) KW - RESEARCH KW - MICROSTRUCTURE KW - DEFORMATIONS (Mechanics) KW - STRAINS & stresses (Mechanics) KW - DIGITAL image processing N1 - Accession Number: 73523005; Phillips, P. L. 1 Brockman, R. A. 1 John, R. 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park Avenue, Dayton, OH 45409, USA 2: US Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLMN, 2230 Tenth Street, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Apr2012, Vol. 48 Issue 2, p143; Subject Term: MECHANICS (Physics); Subject Term: RESEARCH; Subject Term: MICROSTRUCTURE; Subject Term: DEFORMATIONS (Mechanics); Subject Term: STRAINS & stresses (Mechanics); Subject Term: DIGITAL image processing; Number of Pages: 10p; Illustrations: 3 Color Photographs, 8 Diagrams, 6 Charts, 1 Graph; Document Type: Article L3 - 10.1111/j.1475-1305.2011.00806.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73523005&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sinha, V. AU - Srinivasan, R. AU - Tamirisakandala, S. AU - Miracle, D.B. T1 - Superplastic behavior of Ti–6Al–4V–0.1B alloy JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2012/03/30/ VL - 539 M3 - Article SP - 7 EP - 12 SN - 09215093 AB - Abstract: The superplastic behavior of Ti–6Al–4V–0.1B sheet was evaluated. The strain rate sensitivity (m) is ≥0.47 in the temperature range 775–900°C and at strain rate, The material exhibits tensile elongations>200% in the temperature range 725–950°C at The optimum superplastic forming temperature is 900°C, which is similar to conventional Ti–6Al–4V. However, a lower flow stress is needed in the case of Ti–6Al–4V–0.1B. The superplastic deformation mechanism is suggested from estimates of activation energy to be grain boundary sliding (GBS) accommodated by dislocation motion along grain boundaries at and is diffusion-controlled dislocation climb at Microstructural observations also confirm that GBS is the operating deformation mechanism at 900°C and [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERPLASTICITY KW - TITANIUM alloys KW - STRAINS & stresses (Mechanics) KW - TEMPERATURE effect KW - SENSITIVITY analysis KW - CRYSTAL grain boundaries KW - DEFORMATIONS (Mechanics) KW - DISLOCATIONS in crystals KW - Strain rate sensitivity KW - Superplasticity KW - Titanium alloy N1 - Accession Number: 73339109; Sinha, V. 1,2; Email Address: vikas.sinha@wpafb.af.mil Srinivasan, R. 3 Tamirisakandala, S. 1,4 Miracle, D.B. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 3: Mechanical and Materials Engineering Department, Wright State University, Dayton, OH 45435, USA 4: FMW Composite Systems, Inc., Bridgeport, WV 26330, USA; Source Info: Mar2012, Vol. 539, p7; Subject Term: SUPERPLASTICITY; Subject Term: TITANIUM alloys; Subject Term: STRAINS & stresses (Mechanics); Subject Term: TEMPERATURE effect; Subject Term: SENSITIVITY analysis; Subject Term: CRYSTAL grain boundaries; Subject Term: DEFORMATIONS (Mechanics); Subject Term: DISLOCATIONS in crystals; Author-Supplied Keyword: Strain rate sensitivity; Author-Supplied Keyword: Superplasticity; Author-Supplied Keyword: Titanium alloy; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.msea.2011.12.058 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73339109&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Troe, Jürgen AU - Miller, Thomas M. AU - Viggiano, Albert A. T1 - Communication: Revised electron affinity of SF6 from kinetic data. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2012/03/28/ VL - 136 IS - 12 M3 - Article SP - 121102 PB - American Institute of Physics SN - 00219606 AB - Previously determined experimental data for thermal attachment of electrons to SF6 and thermal detachment from SF6- over the range 590-670 K are reevaluated by a third-law analysis. Recent high precision calculations of SF6- harmonic frequences and anharmonicities (for several of the modes) lead to considerable changes in modeled vibrational partition functions which then have to be accommodated for by a smaller value of the derived adiabatic electron affinity EA of SF6. The previously estimated value of EA = 1.20 (±0.05) eV in this way is reduced to a value of EA = 1.03 (±0.05) eV. In addition, the bond dissociation energy E0,dis for SF6- → SF5- + F is reduced to E0,dis = 1.44 (±0.05) eV. Finally, the consequences for modeled specific rate constants kdet(E,J) of electron detachment from SF6- are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON affinity KW - CHEMICAL kinetics KW - CHEMICAL bonds KW - DISSOCIATION (Chemistry) KW - FORCE & energy KW - THERMAL analysis N1 - Accession Number: 73959746; Troe, Jürgen 1,2 Miller, Thomas M. 3 Viggiano, Albert A. 3; Affiliation: 1: Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, 2: Max-Planck-Institut für Biophysikalische Chemie, Am Fassberg 11, D-37077 Göttingen, 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117-5776,; Source Info: 3/28/2012, Vol. 136 Issue 12, p121102; Subject Term: ELECTRON affinity; Subject Term: CHEMICAL kinetics; Subject Term: CHEMICAL bonds; Subject Term: DISSOCIATION (Chemistry); Subject Term: FORCE & energy; Subject Term: THERMAL analysis; Number of Pages: 3p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.3698170 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73959746&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Viggiano, A. A. T1 - Kinetics of electron attachment to OH and HNO3 and mutual neutralization of Ar+ with NO2- and NO3- at 300 and 500 K. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2012/03/28/ VL - 136 IS - 12 M3 - Article SP - 124307 PB - American Institute of Physics SN - 00219606 AB - The electron attachment rate constant to nitric acid (HNO3) has been measured in a flowing afterglow-Langmuir probe (FALP) apparatus at 300 and 500 K using three independent methods: the traditional FALP technique of monitoring electron depletion, 'one-gas' VENDAMS (variable electron and neutral density attachment mass spectrometry), and 'two-gas' VENDAMS. The three measurements are in agreement with a 300 K weighted average of 1.4 ± 0.3 × 10-7 cm3 s-1, 2 to 10 times higher than previously reported values. Attachment is primarily dissociative yielding NO2- as previously reported, but for the first time a small endothermic channel to produce OH- was also observed at 500 K. From the one-gas VENDAMS data, associative attachment to the OH produced in the primary attachment was found to occur with an effective two body rate constant of 1.2±0.73×10-11 cm3 s-1 at 300 K, the first reported rate constant for this radical species. Finally, ion-ion neutralization rate constants of NO2- and NO3- with Ar+ were determined to be 5.2±2.51.5 × 10-8 and 4.5 ± 2.5 × 10-8 cm3 s-1 at 300 K, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NITRIC acid KW - HYDROXIDES KW - CHEMICAL kinetics KW - NEUTRALIZATION (Chemistry) KW - NITROGEN dioxide KW - MASS spectrometry KW - DISSOCIATION (Chemistry) N1 - Accession Number: 73959685; Shuman, Nicholas S. 1 Miller, Thomas M. 1 Viggiano, A. A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, Albuquerque, New Mexico 87117-5776,; Source Info: 3/28/2012, Vol. 136 Issue 12, p124307; Subject Term: NITRIC acid; Subject Term: HYDROXIDES; Subject Term: CHEMICAL kinetics; Subject Term: NEUTRALIZATION (Chemistry); Subject Term: NITROGEN dioxide; Subject Term: MASS spectrometry; Subject Term: DISSOCIATION (Chemistry); NAICS/Industry Codes: 325311 Nitrogenous Fertilizer Manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; Number of Pages: 7p; Illustrations: 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.3694876 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73959685&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Koerner, Hilmar AU - MacCuspie, Robert I. AU - Park, Kyoungweon AU - Vaia, Richard A. T1 - In Situ UV/Vis, SAXS,and TEM Study of Single-PhaseGold Nanoparticle Growth. JO - Chemistry of Materials JF - Chemistry of Materials Y1 - 2012/03/27/ VL - 24 IS - 6 M3 - Article SP - 981 EP - 995 SN - 08974756 AB - Given the diverse scientific and technological applicationsofgold nanoparticles (Au NPs), understanding the impact of macromolecularadditives on the distribution of size, shape, and composition is crucialto ensure reproducibility and lower production cost. In situ measurementof the evolution of these distributions challenges current techniques;however, it is critical for in-line manufacturing controls. Usingmild Au(I) reduction by tert-butylamine-borane intoluene, the utility and limitations of SAXS, UV/Vis spectroscopy,and TEM are considered by comparing the mean nanoparticle size, sizedistribution, and relative number density. Individually, these techniquesare insufficient to follow these parameters through the initial processof nucleation and growth; either providing insufficient informationon the number of particles (UV/Vis), introducing artifacts (TEM),or not providing a unique solution for the shape of the distribution(SAXS). However, when used in conjunction, especially SAXS calibratedwith TEM of reaction aliquots, the time evolution of these parameterscan be quantified. For the single-phase Au NP synthesis withAu(I) and mild reductants, four distinct experimental regions arerevealed that entail two growth mechanisms, which complement previousdiscussions of single-mode growth kinetics. The kinetics of Au(I):boranereactions are dependent on the Au precursor/reductant ratio and thethiol capping agent length, when reductant concentration is low. Thefinal reaction products exhibit an LSW size distribution. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemistry of Materials is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GOLD nanoparticles KW - METAL crystals -- Growth KW - SMALL-angle X-ray scattering KW - TRANSMISSION electron microscopy KW - MACROMOLECULES KW - ULTRAVIOLET spectroscopy KW - PARTICLE size distribution N1 - Accession Number: 73961884; Koerner, Hilmar 1 MacCuspie, Robert I. 1 Park, Kyoungweon 1 Vaia, Richard A. 1; Affiliation: 1: †Materials and ManufacturingDirectorate, Air Force Research Laboratory, Wright- Patterson AFB,Ohio 45433, United States; Source Info: Mar2012, Vol. 24 Issue 6, p981; Subject Term: GOLD nanoparticles; Subject Term: METAL crystals -- Growth; Subject Term: SMALL-angle X-ray scattering; Subject Term: TRANSMISSION electron microscopy; Subject Term: MACROMOLECULES; Subject Term: ULTRAVIOLET spectroscopy; Subject Term: PARTICLE size distribution; Number of Pages: 15p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73961884&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Park, Jeongho AU - Mitchel, W. C. AU - Elhamri, Said AU - Back, Tyson C. T1 - Effect of in-situ oxygen on the electronic properties of graphene grown by carbon molecular beam epitaxy grown. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/03/26/ VL - 100 IS - 13 M3 - Article SP - 133107 PB - American Institute of Physics SN - 00036951 AB - We report that graphene grown by molecular beam epitaxy from solid carbon (CMBE) on (0001) SiC in the presence of unintentional oxygen exhibits a small bandgap on the order of tens of meV. The presence of bandgaps is confirmed by temperature dependent Hall effect and resistivity measurements. X-ray photoelectron spectroscopy (XPS) measurements suggest that oxygen incorporates into the SiC substrate in the form of O-Si-C and not into the graphene as graphene oxide or some other species. The effect is independent of the carrier type of the graphene. Temperature dependent transport measurements show the presence of hopping conduction in the resistivity and a concurrent disappearance of the Hall voltage. Interactions between the graphene layers and the oxidized substrate are believed to be responsible for the bandgap. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPHENE -- Electric properties KW - POLYCYCLIC aromatic hydrocarbons KW - EPITAXY KW - MOLECULAR beam epitaxy KW - ELECTRON spectroscopy KW - PHOTOELECTRON spectroscopy N1 - Accession Number: 73960328; Park, Jeongho 1 Mitchel, W. C. 1 Elhamri, Said 2 Back, Tyson C. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RXPS), Wright-Patterson AFB, Ohio 45433-7707, 2: Department of Physics, University of Dayton, Dayton, Ohio 45469,; Source Info: Mar2012, Vol. 100 Issue 13, p133107; Subject Term: GRAPHENE -- Electric properties; Subject Term: POLYCYCLIC aromatic hydrocarbons; Subject Term: EPITAXY; Subject Term: MOLECULAR beam epitaxy; Subject Term: ELECTRON spectroscopy; Subject Term: PHOTOELECTRON spectroscopy; Number of Pages: 4p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.3697830 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73960328&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stauffer, Hans U. AU - Miller, Joseph D. AU - Roy, Sukesh AU - Gord, James R. AU - Meyer, Terrence R. T1 - Communication: Hybrid femtosecond/picosecond rotational coherent anti-Stokes Raman scattering thermometry using a narrowband time-asymmetric probe pulse. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2012/03/21/ VL - 136 IS - 11 M3 - Article SP - 111101 PB - American Institute of Physics SN - 00219606 AB - A narrowband, time-asymmetric probe pulse is introduced into the hybrid femtosecond/picosecond rotational coherent anti-Stokes Raman scattering (fs/ps RCARS) technique to provide accurate and precise single-shot, high-repetition-rate gas-phase thermometric measurements. This narrowband pulse-generated by inserting a Fabry-Pérot étalon into the probe-pulse beam path-enables frequency-domain detection of pure-rotational transitions. The unique time-asymmetric nature of this pulse, in turn, allows for detection of resonant Raman-active rotational transitions free of signal contamination by nonresonant four-wave-mixing processes while still allowing detection at short probe-pulse delays, where collisional dephasing processes are negligible. We demonstrate that this approach provides excellent single-shot thermometric accuracy (<1% error) and precision (∼2.5%) in gas-phase environments. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN spectroscopy KW - TEMPERATURE measurements KW - ASYMMETRY (Chemistry) KW - PICOSECOND pulses KW - PHASE transformations (Physics) KW - FOUR-wave mixing N1 - Accession Number: 73764223; Stauffer, Hans U. 1 Miller, Joseph D. 2 Roy, Sukesh 1 Gord, James R. 3 Meyer, Terrence R. 2; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield St., Suite 301, Dayton, Ohio 45431, 2: Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, Ohio 45433,; Source Info: 3/21/2012, Vol. 136 Issue 11, p111101; Subject Term: RAMAN spectroscopy; Subject Term: TEMPERATURE measurements; Subject Term: ASYMMETRY (Chemistry); Subject Term: PICOSECOND pulses; Subject Term: PHASE transformations (Physics); Subject Term: FOUR-wave mixing; Number of Pages: 4p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.3693669 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73764223&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bailey, C. A. AU - Tondiglia, V. T. AU - Natarajan, L. V. AU - Bricker, R. AU - Cui, Y. AU - Yang, D. K. AU - Bunning, T. J. T1 - Surface limitations to the electro-mechanical tuning range of negative dielectric anisotropy cholesteric liquid crystals. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/03/15/ VL - 111 IS - 6 M3 - Article SP - 063111 PB - American Institute of Physics SN - 00218979 AB - Recent work on negative dielectric anisotropy cholesteric liquid crystals (CLCs) showed that externally applied dc voltages resulted in blue tuning of the reflection band position up to 20% of its original position. These results also showed that the observed shift in reflection band position was not caused by a direct interaction between the CLC and the applied voltage, but indirectly through electromechanical stresses that deformed the conductive glass substrates, in turn deforming the liquid crystal. In this work, the goal is to clarify that the major limiting factors on the tuning range limit result from the magnitude of the surface anchoring energy and surface induced hysteresis effects. An analytic solution for the tuning range limit and its dependence on the surface and bulk properties is derived that agrees well with the experimental data. Using this model, it was shown that tuning range limits in excess of 35% of the notch position should be expected with typically available alignment materials, and that with proper CLC/surface optimizations, values in the range of 75% are possible. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMECHANICAL devices KW - DIELECTRICS KW - LIQUID crystals KW - ANISOTROPY KW - PHYSICS N1 - Accession Number: 73959941; Bailey, C. A. 1 Tondiglia, V. T. 1 Natarajan, L. V. 1 Bricker, R. 2 Cui, Y. 3 Yang, D. K. 3 Bunning, T. J. 2; Affiliation: 1: SAIC, Dayton, Ohio 45432, 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433, 3: Liquid Crystal Institute, Kent State University, Kent, Ohio 44242,; Source Info: Mar2012, Vol. 111 Issue 6, p063111; Subject Term: ELECTROMECHANICAL devices; Subject Term: DIELECTRICS; Subject Term: LIQUID crystals; Subject Term: ANISOTROPY; Subject Term: PHYSICS; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334512 Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use; NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334290 Other Communications Equipment Manufacturing; NAICS/Industry Codes: 334514 Totalizing Fluid Meter and Counting Device Manufacturing; Number of Pages: 9p; Illustrations: 1 Diagram, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.3694023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73959941&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hay, R. S. T1 - Growth stress in SiO2 during oxidation of SiC fibers. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/03/15/ VL - 111 IS - 6 M3 - Article SP - 063527 PB - American Institute of Physics SN - 00218979 AB - A method to calculate growth stress in SiO2 scales formed during SiC fiber oxidation was developed. Calculations were done for Hi-NicalonTM-S SiC fibers using previously measured Deal-Grove oxidation kinetics parameters. Initial compressive stresses in SiO2 of ∼25 GPa from the 2.2× oxidation volume expansion are rapidly relaxed to lower levels by flow of silica with a shear-stress dependent viscosity. At >1200°, viscous flow of silica relaxes stress to negligible levels. At 700° - 900 °C, compressive axial and hoop stress at the GPa level persist, but radial stresses are much smaller. The decrease in growth stress with increase in temperature is a consequence of larger activation energy for silica viscosity than for oxidation kinetics. Radial expansion of the outer scale eventually causes hoop stress to become tensile in the outer scale, and axial stress becomes tensile from the Poisson effect. Tensile hoop stresses can be >1 GPa for thick scales formed at <1000 °C. Approximate analytical expressions for growth stress for some limiting cases are discussed. Growth stresses were also calculated for crystallized SiO2 scales; these were qualitatively consistent with microstructural evidence of stress. Assumptions and limitations of the calculation method are discussed, along with the possible effects of growth stress on SiC oxidation kinetics and on SiC fiber strength. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXIDATION KW - SILICON oxide KW - SILICON carbide KW - STRAINS & stresses (Mechanics) KW - PHYSICS N1 - Accession Number: 73959940; Hay, R. S. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7817,; Source Info: Mar2012, Vol. 111 Issue 6, p063527; Subject Term: OXIDATION; Subject Term: SILICON oxide; Subject Term: SILICON carbide; Subject Term: STRAINS & stresses (Mechanics); Subject Term: PHYSICS; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 13p; Illustrations: 1 Black and White Photograph, 2 Diagrams, 7 Graphs; Document Type: Article L3 - 10.1063/1.3698305 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73959940&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mao, Xiangyu AU - Wang, Wei AU - Sun, Hui AU - Lu, Yalin AU - Chen, Xiaobing T1 - Influence of different synthesizing steps on the multiferroic properties of BiFeTiO and BiFeCoTiO ceramics. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2012/03/15/ VL - 47 IS - 6 M3 - Article SP - 2960 EP - 2965 PB - Springer Science & Business Media B.V. SN - 00222461 AB - The compounds BiFeTiO (BFTO) and BiFeCoTiO (BFCT) were prepared by incorporating BiFeO (BFO) and BiFeCoO (BFCO) into the host BiTiO (abbreviated as BFTO-1 and BFCT-1) and by the conventional solid-state reaction method (abbreviated as BFTO-2 and BFCT-2). X-ray analysis indicates a four-layer Aurivillius phases with an orthorhombic symmetry. At room temperature, the remnant polarization (2 P) of BFTO-1, BFTO-2, BFCT-1, and BFCT-2 samples are measured to be 11.0, 3.5, 13, and 6.3 μC/cm, respectively, and the corresponding remnant magnetization (2 M) are about 2.72 × 10memu/g, 1.51 × 10memu/g, 7.6 and 2.1 memu/g, respectively. Both BFTO-1 and BFCT-1 samples exhibit the dielectric peaks at around 755 and 772 °C in their ε- T curves, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CERAMICS KW - BISMUTH KW - FERROELECTRIC crystals KW - POLARIZATION (Electricity) KW - MAGNETIZATION KW - DIELECTRICS KW - PEROVSKITE N1 - Accession Number: 70382667; Mao, Xiangyu 1 Wang, Wei 1 Sun, Hui 1 Lu, Yalin 2 Chen, Xiaobing 1; Email Address: xbchen@yzu.edu.cn; Affiliation: 1: College of Physics Science and Technology, Yangzhou University, Yangzhou 225002 People's Republic of China 2: Laser and Optics Research Center, Department of Physics, US Air Force Academy, Colorado 80840 USA; Source Info: Mar2012, Vol. 47 Issue 6, p2960; Subject Term: CERAMICS; Subject Term: BISMUTH; Subject Term: FERROELECTRIC crystals; Subject Term: POLARIZATION (Electricity); Subject Term: MAGNETIZATION; Subject Term: DIELECTRICS; Subject Term: PEROVSKITE; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; Number of Pages: 6p; Illustrations: 1 Black and White Photograph, 4 Graphs; Document Type: Article L3 - 10.1007/s10853-011-6129-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70382667&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pitz, Greg A. AU - Sandoval, Andrew J. AU - Zameroski, Nathan D. AU - Klennert, Wade L. AU - Hostutler, David A. T1 - Pressure broadening and shift of the potassium D 1 transition by the noble gases and N2, H2, HD, D2, CH4, C2H6, C3H8, and n-C4H10 with comparison to other alkali rates JO - Journal of Quantitative Spectroscopy & Radiative Transfer JF - Journal of Quantitative Spectroscopy & Radiative Transfer Y1 - 2012/03/15/ VL - 113 IS - 5 M3 - Article SP - 387 EP - 395 SN - 00224073 AB - Abstract: The pressure broadening and shift rates for the potassium ) transition with the noble gases and 3He, H2, HD, D2, N2, CH4, C2H6, C3H8, and n-C4H10 were obtained for pressures up to 80Torr and at a temperature of 55°C by means of laser absorption spectroscopy. The collisional broadening rate, , for He, 3He, Ne, Ar, Kr, Xe, H2, HD, D2, N2, CH4, C2H6, C3H8, and n-C4H10 are 13.08, 17.46, 6.14, 19.45, 16.64, 20.02, 22.15, 19.36, 17.47, 17.78, 29.35, 26.63, 27.27, and 27.85MHz/Torr, respectively. The uncertainty in the broadening rates is typically less than 1.6%. The corresponding pressure induced shift rates, , are 1.63, 6.82, −1.27, −6.44, −5.42, −6.54, −5.34, −5.10, −4.70, −6.80, −7.41, −8.32, −8.59, and −8.80MHz/Torr with a uncertainty of less than 2.4%. A comparison with the other alkali D 1 broadening cross-sections is presented. [Copyright &y& Elsevier] AB - Copyright of Journal of Quantitative Spectroscopy & Radiative Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POTASSIUM KW - ABSORPTION KW - NOBLE gases KW - LASER spectroscopy KW - TEMPERATURE effect KW - CROSS-sectional method KW - DPAL KW - Laser absorption KW - Potassium KW - Pressure broadening KW - Pressure shift KW - Spectroscopy N1 - Accession Number: 71254549; Pitz, Greg A. 1; Email Address: AFRL.RDLC.SCI.org@kirtland.af.mil Sandoval, Andrew J. 1 Zameroski, Nathan D. 2 Klennert, Wade L. 3 Hostutler, David A. 1; Affiliation: 1: Air Force Research Laboratory, 3550 Aberdeen Ave SE, Kirtland Air Force Base, NM 87117, United States 2: Sandia National Laboratories, 1515 Eubank Blvd., Albuquerque, NM 87123, United States 3: The Boeing Company, 4411 The 25 Way NE #350, Albuquerque, NM 87109, United States; Source Info: Mar2012, Vol. 113 Issue 5, p387; Subject Term: POTASSIUM; Subject Term: ABSORPTION; Subject Term: NOBLE gases; Subject Term: LASER spectroscopy; Subject Term: TEMPERATURE effect; Subject Term: CROSS-sectional method; Author-Supplied Keyword: DPAL; Author-Supplied Keyword: Laser absorption; Author-Supplied Keyword: Potassium; Author-Supplied Keyword: Pressure broadening; Author-Supplied Keyword: Pressure shift; Author-Supplied Keyword: Spectroscopy; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jqsrt.2011.12.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71254549&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, S.I. AU - Dimiduk, D.M. AU - Parthasarathy, T.A. AU - Uchic, M.D. AU - Woodward, C. T1 - Atomistic simulations of intersection cross-slip nucleation in L12 Ni3Al JO - Scripta Materialia JF - Scripta Materialia Y1 - 2012/03/15/ VL - 66 IS - 6 M3 - Article SP - 410 EP - 413 SN - 13596462 AB - Using atomistic simulations, the authors evaluate the activation barrier for a screw superdislocation to form the Paidar–Pope–Vitek (PPV) locked configuration when intersecting a forest dislocation in L12 Ni3Al, as a function of the superpartial core width. It is shown that the PPV lock is stable at the intersection, unlike when formed along an isolated dislocation line, and that the activation energy for cross slip at the forest dislocation intersection is significantly lower than that for cross slip along an isolated dislocation. [ABSTRACT FROM AUTHOR] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUCLEATION KW - ACTIVATION energy KW - DISLOCATIONS in metals KW - SIMULATION methods & models KW - NICKEL compounds KW - PHYSICAL metallurgy KW - Activation energy KW - Atomistic simulations KW - Cross slip KW - Dislocation intersection KW - L12 Ni3Al N1 - Accession Number: 70874773; Rao, S.I. 1; Email Address: Satish.Rao@wpafb.af.mil Dimiduk, D.M. 1 Parthasarathy, T.A. 2 Uchic, M.D. 1 Woodward, C. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM Wright-Patterson AFB, OH 45433-7817, USA 2: UES, Inc., 4401 Dayton-Xenia Rd., Dayton, OH 45432-1894, USA; Source Info: Mar2012, Vol. 66 Issue 6, p410; Subject Term: NUCLEATION; Subject Term: ACTIVATION energy; Subject Term: DISLOCATIONS in metals; Subject Term: SIMULATION methods & models; Subject Term: NICKEL compounds; Subject Term: PHYSICAL metallurgy; Author-Supplied Keyword: Activation energy; Author-Supplied Keyword: Atomistic simulations; Author-Supplied Keyword: Cross slip; Author-Supplied Keyword: Dislocation intersection; Author-Supplied Keyword: L12 Ni3Al; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2011.12.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70874773&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mao, Xiangyu AU - Sun, Hui AU - Wang, Wei AU - Lu, Yalin AU - Chen, Xiaobing T1 - Effects of Co-substitutes on multiferroic properties of Bi5FeTi3O15 ceramics JO - Solid State Communications JF - Solid State Communications Y1 - 2012/03/15/ VL - 152 IS - 6 M3 - Article SP - 483 EP - 487 SN - 00381098 AB - Abstract: The samples Bi5FeTi3O15 (BFTO) and Bi5Fe0.5Co0.5Ti3O15 (BFCT) were prepared by incorporating BiFeO3 (BFO) and BiFe0.5Co0.5O3 (BFCO) into the host Bi4Ti3O12 (BTO) using the solid state reaction technique. The Raman shift data indicate that the as-prepared materials are of the four-layer Aurivillius phase with an orthorhombic symmetry. At room temperature (RT) and under a driving electric field of 230 kV/cm, the half substitution of Fe by Co ions is found to result in the increase in the remanent polarization by about 35% and simultaneously the decrease in by about 41%, respectively. The magnetic moment at least tripled its value by substituting half Fe ions by Co ions. The of BFCT is about three thousand times the value of BFTO. [Copyright &y& Elsevier] AB - Copyright of Solid State Communications is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CERAMIC materials KW - FERRITES (Magnetic materials) KW - BISMUTH compounds KW - RAMAN effect KW - TEMPERATURE effect KW - ELECTRIC fields KW - METAL ions KW - A. Ferroelectrics KW - A. Ferromagnetism KW - A. Multiferroics N1 - Accession Number: 71511193; Mao, Xiangyu 1 Sun, Hui 1 Wang, Wei 1 Lu, Yalin 2; Email Address: yalin.lu@usafa.edu Chen, Xiaobing 1; Email Address: xbchen@yzu.edu.cn; Affiliation: 1: College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, People’s Republic of China 2: Leser and Optics Research Center, Department of Physics, US Air Force Academy, CO 80840, USA; Source Info: Mar2012, Vol. 152 Issue 6, p483; Subject Term: CERAMIC materials; Subject Term: FERRITES (Magnetic materials); Subject Term: BISMUTH compounds; Subject Term: RAMAN effect; Subject Term: TEMPERATURE effect; Subject Term: ELECTRIC fields; Subject Term: METAL ions; Author-Supplied Keyword: A. Ferroelectrics; Author-Supplied Keyword: A. Ferromagnetism; Author-Supplied Keyword: A. Multiferroics; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.ssc.2012.01.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71511193&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wu, Yue AU - Sawyer, Jordan AU - Zhang, Zhili AU - Shneider, Mikhail N. AU - Viggiano, Albert A. T1 - Measurement of sodium-argon cluster ion recombination by coherent microwave scattering. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/03/12/ VL - 100 IS - 11 M3 - Article SP - 114108 PB - American Institute of Physics SN - 00036951 AB - This present work demonstrates a non-intrusive measurement of the rate constant for sodium-argon cluster ions (Na+·Ar) recombining with electrons. The measurements begin with resonance enhanced multi-photon ionization of the Na followed by coherent microwave scattering (radar) to monitor the plasma density. The Na+·Ar adduct was formed in a three-body reaction. The plasma decay due to recombination reactions was monitored as a function of time and modeled to determine the rate constant. At 473 K, the rate constant is 1.8-0.5+0.7×10-6cm3/s in an argon buffer at 100 Torr and initial Na number density of 5.5 × 1010 cm-3. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID argon KW - ARGON -- Analysis KW - ELECTRONS -- Backscattering KW - IONIZATION (Atomic physics) KW - PLASMA (Ionized gases) KW - SODIUM N1 - Accession Number: 73443488; Wu, Yue 1 Sawyer, Jordan 1 Zhang, Zhili 1 Shneider, Mikhail N. 2 Viggiano, Albert A. 3; Affiliation: 1: Mechanical, Aerospace and Biomedical Engineering, University of Tennessee, Knoxville Tennessee 37996, 2: Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544, 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117,; Source Info: 3/12/2012, Vol. 100 Issue 11, p114108; Subject Term: LIQUID argon; Subject Term: ARGON -- Analysis; Subject Term: ELECTRONS -- Backscattering; Subject Term: IONIZATION (Atomic physics); Subject Term: PLASMA (Ionized gases); Subject Term: SODIUM; Number of Pages: 4p; Illustrations: 1 Color Photograph, 3 Graphs; Document Type: Article L3 - 10.1063/1.3695064 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73443488&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rachbauer, Richard AU - Gengler, Jamie J. AU - Voevodin, Andrey A. AU - Resch, Katharina AU - Mayrhofer, Paul H. T1 - Temperature driven evolution of thermal, electrical, and optical properties of Ti–Al–N coatings JO - Acta Materialia JF - Acta Materialia Y1 - 2012/03// VL - 60 IS - 5 M3 - Article SP - 2091 EP - 2096 SN - 13596454 AB - Abstract: Monolithic single phase cubic (c) Ti1−x Al x N thin films are used in various industrial applications due to their high thermal stability, which beneficially effects lifetime and performance of cutting and milling tools, but also find increasing utilization in electronic and optical devices. The present study elucidates the temperature-driven evolution of heat conductivity, electrical resistivity and optical reflectance from room temperature up to 1400°C and links them to structural and chemical changes in Ti1−x Al x N coatings. It is shown that various decomposition phenomena, involving recovery and spinodal decomposition (known to account for the age hardening phenomenon in c-Ti1−x Al x N), as well as the cubic to wurtzite phase transformation of spinodally formed AlN-enriched domains, effectively increase the thermal conductivity of the coatings from ∼3.8Wm−1 K−1 by a factor of three, while the electrical resistivity is reduced by one order of magnitude. A change in the coating color from metallic grey after deposition to reddish-golden after annealing to 1400°C is related to the film structure and discussed in terms of film reflectivity. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - TERNARY alloys KW - TEMPERATURE effect KW - METAL coating KW - METALLIC films -- Electric properties KW - METALLIC films -- Optical properties KW - METALS -- Thermal properties KW - CHEMICAL stability KW - Electrical resistivity KW - Optical reflectivity KW - Thermal conductivity KW - Thermal stability KW - TiAlN N1 - Accession Number: 73528805; Rachbauer, Richard 1,2; Email Address: richard.rachbauer@unileoben.ac.at Gengler, Jamie J. 3,4 Voevodin, Andrey A. 3 Resch, Katharina 5 Mayrhofer, Paul H. 1,2; Affiliation: 1: Department Physical Metallurgy and Materials Testing, Montanuniversität Leoben, Franz-Josef-Strasse 18, A-8700 Leoben, Austria 2: Christian Doppler Laboratory for Application Oriented Coating Development, Department of Physical Metallurgy and Materials Testing, Montanuniversität Leoben, Franz-Josef-Strasse 18, A-8700 Leoben, Austria 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Thermal Sciences and Materials Branch, 2941 Hobson Way, Wright-Patterson Air Force Base, OH 45433, USA 4: Spectral Energies LLC, Suite 301, 5100 Springfield Street, Dayton, OH 45431, USA 5: Department of Polymer Engineering and Science, Montanuniversität Leoben, Otto-Glöckel-Strasse 12, A-8700 Leoben, Austria; Source Info: Mar2012, Vol. 60 Issue 5, p2091; Subject Term: TITANIUM alloys; Subject Term: TERNARY alloys; Subject Term: TEMPERATURE effect; Subject Term: METAL coating; Subject Term: METALLIC films -- Electric properties; Subject Term: METALLIC films -- Optical properties; Subject Term: METALS -- Thermal properties; Subject Term: CHEMICAL stability; Author-Supplied Keyword: Electrical resistivity; Author-Supplied Keyword: Optical reflectivity; Author-Supplied Keyword: Thermal conductivity; Author-Supplied Keyword: Thermal stability; Author-Supplied Keyword: TiAlN; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.actamat.2012.01.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73528805&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bond, Vanessa L. AU - Canfield, Robert A. AU - Suleman, Afzal AU - Blair, Maxwell T1 - Aeroelastic Scaling of a Joined Wing for Nonlinear Geometric Stiffness. JO - AIAA Journal JF - AIAA Journal Y1 - 2012/03// VL - 50 IS - 3 M3 - Article SP - 513 EP - 522 SN - 00011452 AB - This study demonstrates an aeroelastic scaling procedure that accounts for geometric nonlinearity by scaling the eigenvalue associated with the buckling load. The Goland wing model was used as a case study to demonstrate that both the natural frequencies and mode shapes must be matched to properly scale the aeroelastic response. A variant of the Goland wing joined with a strut was developed as the case study for scaling geometric nonlinearity. Scaling its first buckling eigenvalue together with the natural frequencies and mode shapes resulted in accurate aeroelastically scaled response in the initial nonlinear range. The fully nonlinear response of the scaled model decreased in accuracy as the critical load predicted by the buckling eigenanalysis was approached. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - EIGENVALUES KW - BUCKLING (Mechanics) KW - NONLINEAR theories KW - EIGENANALYSIS N1 - Accession Number: 73211118; Bond, Vanessa L. 1,2 Canfield, Robert A. 3,4 Suleman, Afzal 4,5 Blair, Maxwell 4,6; Affiliation: 1: United States Air Force, Edwards Air Force Base, California 93524 2: Member AIAA 3: Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061 4: Associate Fellow AIAA 5: University of Victoria, Victoria, British Columbia V8W 3P6, Canada 6: United States Air Force, Wright Patterson Air Force Base, Ohio 45433; Source Info: Mar2012, Vol. 50 Issue 3, p513; Subject Term: AEROELASTICITY; Subject Term: EIGENVALUES; Subject Term: BUCKLING (Mechanics); Subject Term: NONLINEAR theories; Subject Term: EIGENANALYSIS; Number of Pages: 10p; Document Type: Article L3 - 10.2514/1.41139 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73211118&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yakovlev, Vladislav V. AU - Petrov, Georgi I. AU - Zhang, Hao F. AU - Noojin, Gary D. AU - Thomas, Patrick A. AU - Denton, Michael L. AU - Rockwell, Benjamin A. AU - Thomas, Robert J. T1 - Chemically Specific Imaging Through Stimulated Raman Photoexcitation and Ultrasound Detection: Minireview. JO - Australian Journal of Chemistry JF - Australian Journal of Chemistry Y1 - 2012/03// VL - 65 IS - 3 M3 - Article SP - 260 EP - 265 SN - 00049425 AB - A powerful combination of chemically specific Raman excitation and deep tissue ultrasound imaging holds the promise to attain spatially resolved distribution of chemical compounds inside the scattering medium. In this report, an attempt is made to evaluate the recent achievements and possible challenges with an eye on potential clinical applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Australian Journal of Chemistry is the property of CSIRO Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN effect KW - LIGHT -- Scattering KW - EXCITATION spectrum KW - RAMAN microscopy KW - RAMAN spectroscopy N1 - Accession Number: 74202129; Yakovlev, Vladislav V. 1,2; Email Address: yakovlev@tamu.edu Petrov, Georgi I. 1,2 Zhang, Hao F. 3 Noojin, Gary D. 4 Thomas, Patrick A. 5 Denton, Michael L. 4 Rockwell, Benjamin A. 5 Thomas, Robert J. 5; Affiliation: 1: Department of Physics, University of Wisconsin - Milwaukee, Milwaukee, WI 53211, USA. 2: Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA. 3: Biomedical Engineering Department, Northwestern University, Evanston, IL 00555-9642, USA. 4: Biomedical Sciences and Technologies Department, Tas.C, Inc., San Antonio, TX 78228, USA. 5: US Air Force Research Laboratory, 711 HPW/RHDO, Brooks City-Base, TX 78235, USA.; Source Info: Mar2012, Vol. 65 Issue 3, p260; Subject Term: RAMAN effect; Subject Term: LIGHT -- Scattering; Subject Term: EXCITATION spectrum; Subject Term: RAMAN microscopy; Subject Term: RAMAN spectroscopy; Number of Pages: 6p; Document Type: Article; Full Text Word Count: 5716 L3 - 10.1071/CH11407 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74202129&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Slep, Amy M. Smith AU - Heyman, Richard E. AU - Snarr, Jeffery D. T1 - Corrigendum to “Child emotional aggression and abuse: Definitions and prevalence” [Child Abuse & Neglect 35 (2011) 783–796] JO - Child Abuse & Neglect JF - Child Abuse & Neglect Y1 - 2012/03// VL - 36 IS - 3 M3 - Correction notice SP - 268 EP - 268 SN - 01452134 N1 - Accession Number: 74096354; Slep, Amy M. Smith 1,2 Heyman, Richard E. 1,2 Snarr, Jeffery D. 1,2; Affiliation: 1: Department of Psychology, Stony Brook University, Stony Brook, NY 11794-2500, USA 2: United States Air Force Family Advocacy Program 1 , Lackland-Kelly Air Force Base, San Antonio, TX, USA; Source Info: Mar2012, Vol. 36 Issue 3, p268; Number of Pages: 1p; Document Type: Correction notice L3 - 10.1016/j.chiabu.2011.07.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74096354&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gunzelmann, Glenn AU - Gluck, Kevin A. AU - Richard Moore, L. AU - Dinges, David F. T1 - Diminished access to declarative knowledge with sleep deprivation JO - Cognitive Systems Research JF - Cognitive Systems Research Y1 - 2012/03// VL - 13 IS - 1 M3 - Article SP - 1 EP - 11 SN - 13890417 AB - Abstract: Inadequate sleep affects cognitive functioning, with often subtle and occasionally catastrophic personal and societal consequences. Unfortunately, this topic has received little attention in the cognitive modeling literature, despite the potential payoff. In this paper, we provide evidence regarding the impact of sleep deprivation on a particular component of cognitive performance, the ability to access and use declarative knowledge. Every 2h throughout an extended period of sleep deprivation, participants completed 50 trials of a serial addition/subtraction task requiring knowledge of single-digit arithmetic facts. Over the course of 88h awake, response times increased while accuracy declined. A computational model accounts for the degradation in performance through a reduction in the activation of declarative knowledge. This knowledge is required for successful completion of the serial addition/subtraction task, but access to the declarative knowledge is impaired as sleep deprivation increases and alertness declines. Importantly, the mechanism provides a generalizable quantitative account relevant to other tasks and contexts. It also provides a process-level understanding of how cognitive performance declines with increasing levels of sleep loss. [Copyright &y& Elsevier] AB - Copyright of Cognitive Systems Research is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SLEEP deprivation KW - COGNITIVE ability KW - MATHEMATICAL ability KW - EXPLICIT memory KW - ADDITION (Mathematics) KW - SUBTRACTION (Mathematics) KW - Activation KW - Computational model KW - Declarative knowledge KW - Fatigue KW - Memory retrieval KW - Sleep deprivation N1 - Accession Number: 67210476; Gunzelmann, Glenn 1; Email Address: glenn.gunzelmann@us.af.mil Gluck, Kevin A. 1 Richard Moore, L. 2 Dinges, David F. 3; Affiliation: 1: Air Force Research Laboratory, Cognitive Models and Agents Branch (711 HPW/RHAC), 6030 South Kent St., Mesa, AZ 85212, United States 2: Lockheed Martin at Air Force Research Laboratory, 6030 South Kent St., Mesa, AZ 85212, United States 3: Division of Sleep and Chronobiology, Department of Psychiarty, University of Pennsylvania School of Medicine, 10 Blockley Hall, 423 Guardian Dr., Philadelphia, PA 19104, United States; Source Info: Mar2012, Vol. 13 Issue 1, p1; Subject Term: SLEEP deprivation; Subject Term: COGNITIVE ability; Subject Term: MATHEMATICAL ability; Subject Term: EXPLICIT memory; Subject Term: ADDITION (Mathematics); Subject Term: SUBTRACTION (Mathematics); Author-Supplied Keyword: Activation; Author-Supplied Keyword: Computational model; Author-Supplied Keyword: Declarative knowledge; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Memory retrieval; Author-Supplied Keyword: Sleep deprivation; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.cogsys.2010.09.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67210476&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brissett, Wilson T1 - Jonathan Edwards, Continuity, and Secularism. JO - Early American Literature JF - Early American Literature Y1 - 2012/03// VL - 47 IS - 1 M3 - Book Review SP - 171 EP - 182 PB - University of North Carolina Press SN - 00128163 AB - The article reviews several books including "The Puritan Origins of the American Self" by Sacvan Bercovitch, "American Spaces of Conversion: The Conductive Imaginaries of Edwards, Emerson, and James" by Andrea Knutson, and "Reading Jonathan Edwards: An Annotated Bibliography in Three Parts, 1729–2005" by M. X. Lesser. KW - NONFICTION KW - BERCOVITCH, Sacvan, 1933-2014 KW - KNUTSON, Andrea KW - LESSER, M. X. KW - PURITAN Origins of the American Self, The (Book) KW - AMERICAN Spaces of Conversion: The Conductive Imaginaries of Edwards, Emerson & James (Book) KW - READING Jonathan Edwards: An Annotated Bibliography in Three Parts 1729-2005 (Book) N1 - Accession Number: 73826098; Brissett, Wilson 1; Affiliation: 1: Assistant Professor of English, United States Air Force Academy; Source Info: Mar2012, Vol. 47 Issue 1, p171; Subject Term: NONFICTION; Reviews & Products: PURITAN Origins of the American Self, The (Book); Reviews & Products: AMERICAN Spaces of Conversion: The Conductive Imaginaries of Edwards, Emerson & James (Book); Reviews & Products: READING Jonathan Edwards: An Annotated Bibliography in Three Parts 1729-2005 (Book); People: BERCOVITCH, Sacvan, 1933-2014; People: KNUTSON, Andrea; People: LESSER, M. X.; Number of Pages: 12p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73826098&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boxx, Isaac AU - Arndt, Christoph AU - Carter, Campbell AU - Meier, Wolfgang T1 - High-speed laser diagnostics for the study of flame dynamics in a lean premixed gas turbine model combustor. JO - Experiments in Fluids JF - Experiments in Fluids Y1 - 2012/03// VL - 52 IS - 3 M3 - Article SP - 555 EP - 567 SN - 07234864 AB - A series of measurements was taken on two technically premixed, swirl-stabilized methane-air flames (at overall equivalence ratios of ϕ = 0.73 and 0.83) in an optically accessible gas turbine model combustor. The primary diagnostics used were combined planar laser-induced fluorescence of the OH radical and stereoscopic particle image velocimetry (PIV) with simultaneous repetition rates of 10 kHz and a measurement duration of 0.8 s. Also measured were acoustic pulsations and OH chemiluminescence. Analysis revealed strong local periodicity in the thermoacoustically self-excited (or ' noisy') flame (ϕ = 0.73) in the regions of the flow corresponding to the inner shear layer and the jet-inflow. This periodicity appears to be the result of a helical precessing vortex core (PVC) present in that region of the combustor. The PVC has a precession frequency double (at 570 Hz) that of the thermo-acoustic pulsation (at 288 Hz). A comparison of the various data sets and analysis techniques applied to each flame suggests a strong coupling between the PVC and the thermo-acoustic pulsation in the noisy flame. Measurements of the stable (' quiet') flame (ϕ = 0.83) revealed a global fluctuation in both velocity and heat-release around 364 Hz, but no clear evidence of a PVC. [ABSTRACT FROM AUTHOR] AB - Copyright of Experiments in Fluids is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS turbines KW - COMBUSTION chambers KW - FLUORESCENCE KW - FREE radicals (Chemistry) KW - PARTICLE image velocimetry KW - FLUCTUATIONS (Physics) N1 - Accession Number: 72033838; Boxx, Isaac 1; Email Address: Isaac.Boxx@dlr.de Arndt, Christoph 1 Carter, Campbell 2 Meier, Wolfgang 1; Affiliation: 1: Institut für Verbrennungstechnik, Deutsches Zentrum für Luft-und Raumfahrt (DLR), Stuttgart Germany 2: Air Force Research Laboratory (AFRL)/RZAS, Wright-Patterson AFB, Dayton USA; Source Info: Mar2012, Vol. 52 Issue 3, p555; Subject Term: GAS turbines; Subject Term: COMBUSTION chambers; Subject Term: FLUORESCENCE; Subject Term: FREE radicals (Chemistry); Subject Term: PARTICLE image velocimetry; Subject Term: FLUCTUATIONS (Physics); NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; NAICS/Industry Codes: 562210 Waste treatment and disposal; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1007/s00348-010-1022-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=72033838&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brockman, Robert A. AU - Braisted, William R. AU - Olson, Steven E. AU - Tenaglia, Richard D. AU - Clauer, Allan H. AU - Langer, Kristina AU - Shepard, Michael J. T1 - Prediction and characterization of residual stresses from laser shock peening JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2012/03// VL - 36 IS - 1 M3 - Article SP - 96 EP - 108 SN - 01421123 AB - Abstract: The use of laser shock peening (LSP) to enhance the fatigue resistance of metals offers several potential advantages over more conventional surface enhancement techniques such as shot peening, including deeper penetration of the residual stresses, more reliable surface coverage, and the potential for reduced microstructural damage. In the last decade, computational hardware and software resources have advanced to a state that permits numerical simulation of practical LSP processing at a reasonable level of detail, including complex geometric features, multiple and overlapping laser pulses, and intensity variations within the individual laser spots. This article offers some further developments in simulating LSP processes on a realistic scale, as well as some simple methods for distilling and interpreting results from such simulations. A key point of interest is the local variations in residual stress that occur within the processed region, which are quite sensitive to processing variables, and not easily measured experimentally. The simulations suggest that X-ray diffraction measurements of the residual stress field offer only a coarse description of the final residual stress field, and should be interpreted with some caution. We propose some methods for interpreting the simulation results statistically, to provide a clear but accurate characterization of the surface treatment and its effect on fatigue behavior. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER peening KW - RESIDUAL stresses KW - METALS -- Fatigue KW - MICROSTRUCTURE KW - COMPUTER simulation KW - X-ray diffraction KW - ULTRASHORT laser pulses KW - Fatigue KW - Finite elements KW - Laser shock peening KW - Residual stresses KW - Statistics N1 - Accession Number: 67249196; Brockman, Robert A. 1; Email Address: robert.brockman@udri.udayton.edu Braisted, William R. 1 Olson, Steven E. 1 Tenaglia, Richard D. 2 Clauer, Allan H. 2 Langer, Kristina 3 Shepard, Michael J. 3; Affiliation: 1: University of Dayton Research Institute, Dayton, OH, USA 2: LSP Technologies, Dublin, OH, USA 3: Air Force Research Laboratory, AFRL/RBSM, Wright-Patterson Air Force Base, OH, USA; Source Info: Mar2012, Vol. 36 Issue 1, p96; Subject Term: LASER peening; Subject Term: RESIDUAL stresses; Subject Term: METALS -- Fatigue; Subject Term: MICROSTRUCTURE; Subject Term: COMPUTER simulation; Subject Term: X-ray diffraction; Subject Term: ULTRASHORT laser pulses; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Finite elements; Author-Supplied Keyword: Laser shock peening; Author-Supplied Keyword: Residual stresses; Author-Supplied Keyword: Statistics; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.ijfatigue.2011.08.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67249196&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Curtis, David H. AU - Reeder, Mark F. AU - Svanberg, Craig E. AU - Cobb, Richard G. AU - Parker, Gregory H. T1 - Flapping Wing Micro Air Vehicle Bench Test Setup. JO - International Journal of Micro Air Vehicles JF - International Journal of Micro Air Vehicles Y1 - 2012/03// VL - 4 IS - 1 M3 - Article SP - 51 EP - 78 SN - 17568293 AB - The purpose of this research was to develop testing methods that can be used to determine the forces, moments, and deflections involved in flapping wing aerodynamics. To pursue the research, a flapping wing mechanism and wings with spans ranging from 9.1 inches to 12.1 inches were built. A variety of mechanisms, capable of, alternatively, purely flapping, flapping with pitch, and flapping with pitch and out-of-plane motion were conceptualized and drawn using solid modeling software. Two of the simpler designs, a single degree-of-freedom flapping mechanism and the two-degree of freedom flapping mechanism were fabricated using a rapid prototype 3-D printer, and sustained operation was demonstrated. A thrust stand and a six-component force balance were used to gather force data from the flapping-only mechanism, combined with a variety of wing shapes. Four high-speed cameras were used to capture the motion of the wings. To minimize intrusiveness an array of laser dots was projected onto the wing during flapping and photogrammetry software was used to analyze the images and determine a shape profile of the wing composed of a frame and membrane during flapping. While the focus of this research was on the bench test setup development, some insight into the influence of wing design on the forces acting on the mechanism was gained. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Micro Air Vehicles is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICRO air vehicles KW - PHOTOGRAMMETRY KW - ORNITHOPTERS KW - FLYING-machines KW - AERODYNAMICS KW - SOFTWARE N1 - Accession Number: 72679375; Curtis, David H. 1 Reeder, Mark F. 1 Svanberg, Craig E. 1 Cobb, Richard G. 1 Parker, Gregory H. 2; Affiliation: 1: Air Force Institute of Technology, Wright-Patterson AFB, Ohio 45433-7765, USA 2: Air Force Research Laboratory (AFRL/RB), Wright -Patterson AFB, Ohio 45433-7765, USA; Source Info: Mar2012, Vol. 4 Issue 1, p51; Subject Term: MICRO air vehicles; Subject Term: PHOTOGRAMMETRY; Subject Term: ORNITHOPTERS; Subject Term: FLYING-machines; Subject Term: AERODYNAMICS; Subject Term: SOFTWARE; Number of Pages: 28p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=72679375&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Golubev, Vladimir V. AU - Visbal, Miguel R. T1 - Modeling MAV Response in Gusty Urban Environment. JO - International Journal of Micro Air Vehicles JF - International Journal of Micro Air Vehicles Y1 - 2012/03// VL - 4 IS - 1 M3 - Article SP - 79 EP - 92 SN - 17568293 AB - The article discusses an airfoil unsteady aerodynamic response to upstream unsteady flow disturbances in flow regimes characteristic of Micro Air Vehicle (MAV) applications. Because of their small size and speed, the flight control of these vehicles in gusty urban environments poses tremendous challenges addressed in the current work. Following a thorough review of experimental and numerical studies characterizing various scales and configurations of urban flow disturbances, three canonical gust models are proposed corresponding to the time-harmonic gust, the sharp-edge gust, and the Taylor vortex. A high-accuracy numerical analysis is applied to examine MAV airfoil response to such perturbations and conclude on relative importance of contributing viscous and inviscid forces. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Micro Air Vehicles is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICRO air vehicles KW - DRONE aircraft KW - AEROFOILS KW - TAYLOR vortices KW - AERODYNAMICS N1 - Accession Number: 72679378; Golubev, Vladimir V. 1 Visbal, Miguel R. 2; Affiliation: 1: Florida Center for Advanced Aero-Propulsion, Embry-Riddle Aeronautical University Daytona Beach, FL 32114, USA 2: Air Force Research Laboratory, WPAFB, OH 80906, USA; Source Info: Mar2012, Vol. 4 Issue 1, p79; Subject Term: MICRO air vehicles; Subject Term: DRONE aircraft; Subject Term: AEROFOILS; Subject Term: TAYLOR vortices; Subject Term: AERODYNAMICS; Number of Pages: 14p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=72679378&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Jonghoon AU - Sihn, Sangwook AU - Roy, Ajit K. AU - Farmer, Barry L. T1 - The lattice Boltzmann Peierls Callaway equation for mesoscopic thermal transport modeling. JO - International Journal of Smart & Nano Materials JF - International Journal of Smart & Nano Materials Y1 - 2012/03// VL - 3 IS - 1 M3 - Article SP - 47 EP - 63 SN - 19475411 AB - The lattice Boltzmann Peierls Callaway (LBPC) method is a recent development of the versatile lattice Boltzmann formalism aimed at a numerical experiment on mesoscale thermal transport in a multiphase phonon gas. Two aspects of mesoscopic thermal transport are discussed: the finite phonon mean free path and the interface thermal resistance. Based on the phonon momentum screening length measured in the LBPC computational apparatus, the validity of the Umklapp collision relaxation time in the Callaway collision operator is examined quantitatively. The discrete nature of the spatio-temporal domain in the LBPC method, along with the linear approximation of the exponential screening mechanism in the Callaway operator, reveals a large discrepancy between the effective phonon mean free path and the analytic phonon mean free path when the relaxation time is small. The link bounce back interface phonon collision rule is used to realize the interface thermal resistance between phonon gases with dissimilar dispersion relations. Consistent with the Callaway collision operator for the bulk phonon dynamics, the interface phonon collision process is regarded as a linear relaxation mechanism toward the local pseudo-equilibrium phonon distribution uniquely defined by the energy conservation principle. The interface thermal resistance is linearly proportional to the relaxation time of the proposed phonon interface collision rule. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Smart & Nano Materials is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LATTICE Boltzmann methods KW - COMPUTATIONAL fluid dynamics KW - TRANSPORT theory (Mathematics) KW - MATHEMATICAL physics KW - NUMERICAL analysis KW - MESOSCOPIC phenomena (Physics) KW - Boltzmann Peierls equation KW - interfacial thermal resistance KW - Kapitza length KW - lattice Boltzmann method KW - link bounce back collision rule KW - phonon hydrodynamics N1 - Accession Number: 72338758; Lee, Jonghoon 1,2; Email Address: jonghoon.lee@wpafb.af.mil Sihn, Sangwook 1,3 Roy, Ajit K. 1 Farmer, Barry L. 4; Affiliation: 1: Thermal Sciences and Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, USA 2: Universal Technology Corporation, USA 3: University of Dayton Research Institute, USA 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, USA; Source Info: Mar2012, Vol. 3 Issue 1, p47; Subject Term: LATTICE Boltzmann methods; Subject Term: COMPUTATIONAL fluid dynamics; Subject Term: TRANSPORT theory (Mathematics); Subject Term: MATHEMATICAL physics; Subject Term: NUMERICAL analysis; Subject Term: MESOSCOPIC phenomena (Physics); Author-Supplied Keyword: Boltzmann Peierls equation; Author-Supplied Keyword: interfacial thermal resistance; Author-Supplied Keyword: Kapitza length; Author-Supplied Keyword: lattice Boltzmann method; Author-Supplied Keyword: link bounce back collision rule; Author-Supplied Keyword: phonon hydrodynamics; Number of Pages: 17p; Illustrations: 3 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1080/19475411.2011.643930 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=72338758&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Babcock, Judson AU - Albertani, Roberto AU - Abate, Gregg T1 - Experimental Estimation of the Rotary Damping Coefficients of a Pliant Wing. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2012/03//Mar/Apr2012 VL - 49 IS - 2 M3 - Article SP - 390 EP - 397 SN - 00218669 AB - This paper describes the experimental estimation of the rotary-damping coefficients of micro air vehicle (MAV) wings using a novel system for dynamic wind-tunnel testing. Two geometrically identical Zimmerman wings are used, one rigid and one flexible. The flexible wing consists of a perimeter-reinforced latex membrane with three levels of prestrain. A two-degrees-of-freedom motion rig permits the control of the two individual components of the rotary-damping moment. A modern design of experiments methodology was used to elucidate the correlation between the wings' elastic membrane prestrain state and the aerodynamic characteristics. For the flexible wing, elastic deformations are measured using visual image correlation and evaluated using a dimensionless parameter. The resulting aerodynamic model compares well with static reference data. The presence of dynamic changes in the angle of attack or pitch angle has a significant effect on the response of the rigid and flexible MAV wings, particularly on the pitching moment coefficient. At the current levels of the dimensionless membrane wing elastic prestrain, the pretension strain did not exhibit any correlation with the rotary-damping moment coefficients, whereas the pretension strain level does appear as a factor in the rotary-damping drag coefficient. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICRO air vehicles KW - WIND tunnels KW - AERODYNAMICS KW - EXCAVATION KW - VIBRATION (Mechanics) N1 - Accession Number: 75244963; Babcock, Judson 1; Email Address: judson.babcock@gmail.com Albertani, Roberto 2 Abate, Gregg 1; Affiliation: 1: U.S. Air Force Research Laboratory, Eglin Air Force Base, Florida 32542 2: University of Florida, Shalimar, Florida 32579; Source Info: Mar/Apr2012, Vol. 49 Issue 2, p390; Subject Term: MICRO air vehicles; Subject Term: WIND tunnels; Subject Term: AERODYNAMICS; Subject Term: EXCAVATION; Subject Term: VIBRATION (Mechanics); NAICS/Industry Codes: 238910 Site Preparation Contractors; Number of Pages: 8p; Document Type: Article L3 - 10.2514/1.C031161 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75244963&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Randall, Ryan AU - Shkarayev, Sergey AU - Abate, Gregg AU - Babcock, Judson T1 - Longitudinal Aerodynamics of Rapidly Pitching Fixed-Wing Micro Air Vehicles. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2012/03//Mar/Apr2012 VL - 49 IS - 2 M3 - Article SP - 453 EP - 471 SN - 00218669 AB - Some fixed-wing vertical-takeoff-and-landing aircraft can transition between two flight modes: forward flight and near-hover. This study was conducted to improve the transition performance of such vehicles. The experimental model consists of a rigid Zimmerman wing and a propulsion system with contra-rotating propellers. It was rapidly pitched about its aerodynamic center at an average freestream Reynolds number of 86,000. Five nondimensional pitching rates were used, along with two elevator deflections and three propulsive settings. The model was tested statically, and several observations were made. At constant throttle setting, from 20 to 70 deg, both advance ratio and thrust coefficient increase linearly with angle of attack. Higher throttle setting results in greater stall delay, causing the maximum lift coefficient to increase. When throttle setting increases, lift and drag coefficients increase throughout the tested angle-of-attack domain. Rapid-pitching tests showed that nose-up pitching delays stall and nose-down pitching hastens it. Lift and drag coefficients generally increase with positive pitching rate and decrease with negative pitching rate. Wing aerodynamic efficiency is virtually independent of throttle setting, elevator deflection, and pitching rate between 30 and 70 deg angle of attack. The propulsion system is not sensitive to rapid pitching with regard to thrust, normal force, or propulsive moment. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERIAL propellers KW - REYNOLDS number KW - AERODYNAMICS KW - AIRPLANE wings KW - AERONAUTICS N1 - Accession Number: 75244970; Randall, Ryan 1; Email Address: rrandall@email.arizona.edu Shkarayev, Sergey 1; Email Address: svs@email.arizona.edu Abate, Gregg 2; Email Address: Gregg.Abate@eglin.af.mil Babcock, Judson 2; Affiliation: 1: University of Arizona, Tucson, Arizona 85721 2: U.S. Air Force Research Laboratory, Eglin Air Force Base, Florida 32542; Source Info: Mar/Apr2012, Vol. 49 Issue 2, p453; Subject Term: AERIAL propellers; Subject Term: REYNOLDS number; Subject Term: AERODYNAMICS; Subject Term: AIRPLANE wings; Subject Term: AERONAUTICS; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 19p; Document Type: Article L3 - 10.2514/1.C031378 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75244970&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chakravarty, Uttam Kumar T1 - Vibration Characteristics of the Wings of Micro Air Vehicles. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2012/03//Mar/Apr2012 VL - 49 IS - 2 M3 - Article SP - 644 EP - 650 SN - 00218669 AB - A finite-element model is developed for the vibration characteristics (natural frequencies and mode shapes) of the biologically inspired wings of micro air vehicles. The wings are known as the composite wing, batten-reinforced composite-polyester-fabric (BRCPF) wing and the perimeter-reinforced composite-polyester-fabric (PRCPF) wing. The wings are constructed by attaching the skin of polyester fabric to the reinforced structures of graphite-epoxy (T300-5208), except for the composite wing, which does not have the skin. The effect of added mass, damping, and aerodynamic pressure on the vibration characteristics of the wings is investigated. The wings are vibrated in vacuum and in air for investigating the effect of added mass and damping on their vibration characteristics. Natural frequencies of the wings increase with mode; however, they decrease in air from those in vacuum due to the added mass of surrounding air. Damping is low and has minimal influence on the natural frequencies of the wings but helps to reduce the out-of-plane modal amplitude of vibration. The composite wing has the highest natural frequencies among the three wings. On the other hand, the natural frequencies of the BRCPF wing are higher than those of the PRCPF wing. Aerodynamic pressure is estimated from the low-speed wind-tunnel test data, where the angle of attack of the wings and freestream velocity of air are varied. The effect of aerodynamic pressure on the first and second natural frequencies of the wings is not significant, although the third natural frequencies of the wings increase with aerodynamic pressure. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICRO air vehicles KW - AIRPLANE wings KW - AERODYNAMICS KW - GRAPHITE KW - PRESSURE N1 - Accession Number: 75244987; Chakravarty, Uttam Kumar 1; Email Address: uttamk@gatech.edu; Affiliation: 1: U.S. Air Force Research Laboratory, Eglin Air Force Base, Florida 32579; Source Info: Mar/Apr2012, Vol. 49 Issue 2, p644; Subject Term: MICRO air vehicles; Subject Term: AIRPLANE wings; Subject Term: AERODYNAMICS; Subject Term: GRAPHITE; Subject Term: PRESSURE; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.2514/1.C031649 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=75244987&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H. J. AU - Brown, G. J. AU - Elhamri, S. AU - Pacley, S. AU - Olson, B. V. AU - Boggess, T. F. T1 - Post growth annealing study on long wavelength infrared InAs/GaSb superlattices. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/03// VL - 111 IS - 5 M3 - Article SP - 053113 PB - American Institute of Physics SN - 00218979 AB - The impact of post growth annealing on the electrical properties of a long wavelength infrared type-II superlattice (SL) was explored. Quarters of a single SL wafer were annealed at 440 °C, 480 °C, and 515 °C, respectively for 30 min. Changes in the electrical properties were followed using spectral photoconductivity, temperature dependent Hall effect, and time-resolved pump-probe measurements. The bandgap energy remained at ∼107 meV for each anneal, and the photoresponse spectra showed a 25% improvement. The carrier lifetime increased from 12 to ∼15 ns with annealing. The electron mobility was nearly constant for the 440 °C and 480 °C anneals, and increased from ∼4500 to 6300 cm2/Vs for the 515 °C anneal. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVELENGTHS KW - SUPERLATTICES KW - PHOTOCONDUCTIVITY KW - HALL effect KW - ENERGY gaps (Physics) KW - ELECTRON mobility N1 - Accession Number: 73444019; Haugan, H. J. 1 Brown, G. J. 1 Elhamri, S. 2 Pacley, S. 1 Olson, B. V. 3 Boggess, T. F. 3; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, 2: Department of Physics, University of Dayton, Ohio 45469, 3: Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa 52242,; Source Info: Mar2012, Vol. 111 Issue 5, p053113; Subject Term: WAVELENGTHS; Subject Term: SUPERLATTICES; Subject Term: PHOTOCONDUCTIVITY; Subject Term: HALL effect; Subject Term: ENERGY gaps (Physics); Subject Term: ELECTRON mobility; Number of Pages: 4p; Illustrations: 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.3693535 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73444019&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bifano, Michael F. P. AU - Park, Jungkyu AU - Kaul, Pankaj B. AU - Roy, Ajit K. AU - Prakash, Vikas T1 - Effects of heat treatment and contact resistance on the thermal conductivity of individual multiwalled carbon nanotubes using a Wollaston wire thermal probe. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/03// VL - 111 IS - 5 M3 - Article SP - 054321 PB - American Institute of Physics SN - 00218979 AB - Thermal conductivity measurements in commercially available, chemical vapor deposition-grown, heat-treated and non-heat-treated multiwalled carbon nanotubes (MWCNTs) are reported. The thermal conductivity of individual samples is measured using a suspended platinum wire as a thermal resistance probe in a 'T-type' configuration. Changes in third harmonic voltage are measured across the heated suspended platinum wire as a specimen is attached to the platinum wire's midpoint. An analytic model is used to correlate the reduction in the average temperature of the probe wire to the thermal resistance (and thermal conductivity) of the attached sample. Experiments are implemented inside a scanning electron microscope equipped with nanomanipulators for sample selection, and a gas injection system for platinum based electron beam-induced deposition to improve thermal contact resistances. The results indicate a nearly 5-fold increase in the average thermal conductivity of MWCNT samples annealed with a 20-h 3000 °C annealing heat treatment compared to the as-grown samples. However, specimen-specific morphological defects, such as kinking, Y-branches, etc., are found to negate, to a large degree, the advantage of the heat treatment process. The thermal contact resistance between the MWCNT and the electron beam-induced deposition contacts is estimated using an anisotropic diffusive mismatch model that includes the effect of fin resistance. Adjusting the thermal conductivity to include the effect of thermal contact resistance is found to increase the thermal conductivity by approximately 5%. Once adjusted for thermal contact resistance, the average thermal conductivity of the heat-treated MWCNT specimens is 228 W/m-K, with the highest measured thermal conductivity being 765 ± 150 W/m-K. The results highlight the importance of MWCNT quality in thermal management applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL conductivity KW - CHEMICAL vapor deposition KW - MULTIWALLED carbon nanotubes KW - SCANNING electron microscopes KW - HEAT treatment KW - ELECTRON optics N1 - Accession Number: 73444043; Bifano, Michael F. P. 1 Park, Jungkyu 1 Kaul, Pankaj B. 1 Roy, Ajit K. 2 Prakash, Vikas 1; Affiliation: 1: Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, Ohio, 44106, 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Dayton, Ohio, 45433,; Source Info: Mar2012, Vol. 111 Issue 5, p054321; Subject Term: THERMAL conductivity; Subject Term: CHEMICAL vapor deposition; Subject Term: MULTIWALLED carbon nanotubes; Subject Term: SCANNING electron microscopes; Subject Term: HEAT treatment; Subject Term: ELECTRON optics; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 15p; Illustrations: 1 Color Photograph, 3 Black and White Photographs, 2 Diagrams, 9 Graphs; Document Type: Article L3 - 10.1063/1.3691607 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73444043&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, M. Y. AU - Ko, R. T. T1 - Nondestructive assessment of pore size in foam-based hybrid composite material. JO - Journal of Elastomers & Plastics JF - Journal of Elastomers & Plastics Y1 - 2012/03// VL - 44 IS - 2 M3 - Article SP - 177 EP - 188 SN - 00952443 AB - In situ nondestructive evaluation (NDE) during processing of high-temperature polymer-based hybrids offers great potential to gain close control of and achieve the desired level of pore size, with low overall development cost. During the polymer-curing cycle, close control over the evolution of volatiles would be beneficial to avoid the presence of pores or control of their sizes. Traditional NDE methods cannot realistically be expected to evaluate individual pores in such components as each pore evolves and grows during curing. However, NDE techniques offer the potential to detect and quantify the macroscopic response of many pores that are undesirable or intentionally introduced into these advanced materials. In this article, preliminary results will be presented for nondestructive assessment of pore size in foam-based hybrid composite materials using ultrasonic techniques. The ultrasonic method was chosen due to its high sensitivity to the change of composition in material, ability to provide the required depth of penetration and ability to provide the needed modulus information for the cured material through appropriate velocity measurements. Pore size was evaluated through the frequency content of ultrasonic signal. The effects of pore size on the attenuation of ultrasound were studied. Feasibility of this method was demonstrated on two types of foams with various pore sizes. [ABSTRACT FROM PUBLISHER] AB - Copyright of Journal of Elastomers & Plastics is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPOSITE materials KW - NONDESTRUCTIVE testing KW - POLYMERS KW - PORE size (Materials) KW - FOAM KW - foam KW - nondestructive KW - pore size KW - ultrasonic N1 - Accession Number: 73364858; Chen, M. Y. 1 Ko, R. T. 2; Affiliation: 1: Materials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, USA 2: Structural Integrity Division, University of Dayton Research Institute, Dayton, OH, USA Ray.Ko@udri.udayton.edu; Source Info: Mar2012, Vol. 44 Issue 2, p177; Subject Term: COMPOSITE materials; Subject Term: NONDESTRUCTIVE testing; Subject Term: POLYMERS; Subject Term: PORE size (Materials); Subject Term: FOAM; Author-Supplied Keyword: foam; Author-Supplied Keyword: nondestructive; Author-Supplied Keyword: pore size; Author-Supplied Keyword: ultrasonic; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 12p; Document Type: Article; Full Text Word Count: 3452 L3 - 10.1177/0095244311426000 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73364858&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jumper, George Y. AU - Holladay, Joshua J. AU - Wiechert, Melissa K. AU - Seggel, William A. T1 - Impact of Thrust Alignment on Orbital Debris Removal by Ground-Based Lasers. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2012/03//Mar/Apr2012 VL - 49 IS - 2 M3 - Article SP - 261 EP - 267 SN - 00224650 AB - The rising population of orbital debris has generated many studies of mitigation concepts, one of which is the use of repetitively pulsed ground-based lasers, which was studied during the ORION project in the early 1990s. The objective was to verify the minimum velocity change required to cause a reentry within one orbit, using conservative assumptions. Both analytical and numerical solutions to the equations of motion were applied. The report covers the impact if the orbital debris does not make a direct pass over the laser. Also reported are investigations of the impact of object size and density, and the impact of atmospheric density on the velocity change required to deorbit. The conclusion is that, with some minor exceptions, the ORLON required velocity change results appear to be reasonable for concept studies for direct overhead passes. Debris at nonoverhead offset angles of 30° increases total velocity change by about 15%, but increases the velocity change per laser pulse by over 30% above requirements for an overhead pass. Allowing laser pulses to continue until the object is overhead or at closest approach increases total energy requirements but lowers the energy per pulse, an important design consideration. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - SPACE debris KW - OVERHEAD projection KW - ATMOSPHERIC density KW - LASER beams N1 - Accession Number: 74453761; Jumper, George Y. 1,2 Holladay, Joshua J. 1 Wiechert, Melissa K. 1 Seggel, William A. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts O1731-3010 2: Associate Fellow AIAA; Source Info: Mar/Apr2012, Vol. 49 Issue 2, p261; Subject Term: LASERS; Subject Term: SPACE debris; Subject Term: OVERHEAD projection; Subject Term: ATMOSPHERIC density; Subject Term: LASER beams; Number of Pages: 7p; Document Type: Article L3 - 10.2514/1.A32059 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74453761&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Head, William P. T1 - MAYAGUEZ: THE FINAL TRAGEDY OF THE U.S. INVOLVEMENT IN THE VIETNAM WAR. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 2012///Spring2012 VL - 29 IS - 1 M3 - Article SP - 57 EP - 80 PB - Association of Third World Studies SN - 87553449 AB - The article discusses an incident in the Vietnam War involving the container ship known as the SS "Mayaguez" in 1975. The article relates the details of a group of former U.S. Navy swift boats operated by Cambodian communists with the Khmer Rouge approaching the "Mayaguez" on May 12, 1975, 60 miles south of Cambodia. The article states that the Cambodians fired rocket-propelled grenades (RPGs) at the "Mayaguez." The article discusses the response to the incident by then-U.S. president Gerald R. Ford, the U.S. National Security Council (NSC), and the difficulties in deciding for a military engagement. The article also describes U.S. diplomatic responses to the incident, specifically by then-U.S. secretary of state Henry Kissinger, and the U.S. military response by the U.S. Marines. KW - MAYAGUEZ Incident, 1975 KW - VIETNAM War, 1961-1975 -- Campaigns KW - HISTORY KW - 1975-1979 KW - UNITED States -- Foreign relations -- 1974-1977 KW - CAMBODIA KW - UNITED States KW - PARTI communiste du Kampuchea N1 - Accession Number: 79790237; Head, William P. 1,2; Email Address: william.head@robins.af.mil; Affiliation: 1: United States Air Force, Area of Specialization: U.S. Military History/U.S. Foreign Relations, East and Southeast Asia 2: Chief, Office of History WR-ALC, 111 Robins Parkway, Robins AFB, GA 31098-2423; Source Info: Spring2012, Vol. 29 Issue 1, p57; Subject Term: MAYAGUEZ Incident, 1975; Subject Term: VIETNAM War, 1961-1975 -- Campaigns; Subject Term: HISTORY; Subject Term: 1975-1979; Subject Term: UNITED States -- Foreign relations -- 1974-1977; Subject Term: CAMBODIA; Subject Term: UNITED States; Company/Entity: PARTI communiste du Kampuchea; Number of Pages: 24p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79790237&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coletta, Damon AU - Rynning, Sten T1 - NATO from Kabul to Earth orbit: can the alliance cope? JO - Journal of Transatlantic Studies (Routledge) JF - Journal of Transatlantic Studies (Routledge) Y1 - 2012///Spring2012 VL - 10 IS - 1 M3 - Article SP - 26 EP - 44 PB - Routledge SN - 14794012 AB - It is widely acknowledged that NATO has multiple rationales. What is more contestable is the view that the burgeoning complexity of the security environment feeds these rationales and that NATO may not be able to cope. If each rationale is like a personality, then NATO's multiple personalities have a corrosive effect on the Alliance since they prevent it from setting consistent goals and pursuing them. The prescribed cure is a clarified personality that emphasises one rationale at the expense of others. This paper questions the metaphor behind this debate. NATO's multiple rationales are built into the Alliance, we argue, and a better metaphor may be NATO as a congress whose members are independent yet tied to an overarching political project. Such a congress will never be unitary, but it can at times make decisions. Sometimes decision-making will require grand and thus elusive bargains; sometimes it can be moved from formal committees to backroom caucuses that eschew big questions of rationale and instead focus on problem-solving. In any case, congresses can cope with persistent, competing preference orderings and divergent resource bases among constituent states. Where the split personality analogy leads to the collapse of NATO as a coherent actor, the congress metaphor affords better notional explanations for what we actually observe, a messy, raucous alliance that muddles through from Kabul to Earth orbit.1 An earlier version of this article was presented at the International Studies Association Annual Conference, New Orleans, LA, February 17–20, 2010. This academic work does not represent the official views of the United States Government or the United States Air Force. The authors acknowledge the Danish Social Science Research Council (grant 09-064015/FSE) and the Norwegian Institute for Defence Studies for funding research into the Atlantic Alliance that enabled the writing of this paper. For support and comments, we also thank the Eisenhower Center for Space and Defense Studies at the United States Air Force Academy, Eisenhower Center director Roger Harrison, Sean Crean, Mick Gleason, and Pete Hays. The opinions herein and any factual errors are strictly our own. [ABSTRACT FROM PUBLISHER] AB - Copyright of Journal of Transatlantic Studies (Routledge) is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRISIS management KW - ALLIANCES (International relations) KW - INTERNATIONAL relations theory KW - INTERNATIONAL security KW - AFGHAN War, 2001- KW - ASTRONAUTICS & civilization KW - RUSSIA -- Foreign relations -- 1991- KW - RUSSIA KW - alliance KW - crisis management KW - identity KW - institutionalism KW - NATO KW - NORTH Atlantic Treaty Organization N1 - Accession Number: 73326410; Coletta, Damon 1; Email Address: damon.coletta@usafa.edu Rynning, Sten 2; Affiliation: 1: Department of Political Science, United States Air Force Academy, USA 2: Department of Political Science, University of Southern Denmark, Denmark; Source Info: Spring2012, Vol. 10 Issue 1, p26; Subject Term: CRISIS management; Subject Term: ALLIANCES (International relations); Subject Term: INTERNATIONAL relations theory; Subject Term: INTERNATIONAL security; Subject Term: AFGHAN War, 2001-; Subject Term: ASTRONAUTICS & civilization; Subject Term: RUSSIA -- Foreign relations -- 1991-; Subject Term: RUSSIA; Author-Supplied Keyword: alliance; Author-Supplied Keyword: crisis management; Author-Supplied Keyword: identity; Author-Supplied Keyword: institutionalism; Author-Supplied Keyword: NATO; Company/Entity: NORTH Atlantic Treaty Organization; NAICS/Industry Codes: 922190 Other Justice, Public Order, and Safety Activities; Number of Pages: 19p; Document Type: Article L3 - 10.1080/14794012.2012.651367 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73326410&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, Rahul AU - Liptak, David AU - Cherukuri, Tonya AU - Yakobson, Boris I. AU - Maruyama, Benji T1 - In situ evidence for chirality-dependent growth rates of individual carbon nanotubes. JO - Nature Materials JF - Nature Materials Y1 - 2012/03// VL - 11 IS - 3 M3 - Article SP - 213 EP - 216 SN - 14761122 AB - Chiral-selective growth of single-walled carbon nanotubes (SWNTs) remains a great challenge that hinders their use in applications such as electronics and medicine. Recent experimental and theoretical reports have begun to address this problem by suggesting that selectivity may be achieved during nucleation by changing the catalyst composition or structure. Nevertheless, to establish a rational basis for chiral-selective synthesis, the underlying mechanisms governing nucleation, growth, and termination of SWNTs must be better understood. To this end, we report the first measurements of growth rates of individual SWNTs through in situ Raman spectroscopy and correlate them with their chiral angles. Our results show that the growth rates are directly proportional to the chiral angles, in agreement with recent theoretical predictions. Importantly, the evidence singles out the growth stage as responsible for the chiral distribution-distinct from nucleation and termination which might also affect the final product distribution. Our results suggest a route to chiral-selective synthesis of SWNTs through rational synthetic design strategies based on kinetic control. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature Materials is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SINGLE walled carbon nanotubes KW - NUCLEATION KW - CATALYSTS KW - RAMAN spectroscopy KW - CRYSTAL growth N1 - Accession Number: 71866585; Rao, Rahul 1 Liptak, David 2 Cherukuri, Tonya 3 Yakobson, Boris I. 4 Maruyama, Benji 3; Affiliation: 1: 1] Air Force Research Laboratory, Materials and Manufacturing Directorate, RXBN, WPAFB, Ohio 45433, USA [2] 2: 1] Air Force Research Laboratory, Materials and Manufacturing Directorate, RXBN, WPAFB, Ohio 45433, USA [2] UES Inc., Dayton, Ohio 45432, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, RXBN, WPAFB, Ohio 45433, USA 4: Department of Mechanical Engineering and Materials Science, and Department of Chemistry, Rice University, Houston, Texas 77005, USA; Source Info: Mar2012, Vol. 11 Issue 3, p213; Subject Term: SINGLE walled carbon nanotubes; Subject Term: NUCLEATION; Subject Term: CATALYSTS; Subject Term: RAMAN spectroscopy; Subject Term: CRYSTAL growth; Number of Pages: 4p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1038/nmat3231 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71866585&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Levin, G. A. AU - Jones, W. A. AU - Walczak, K. AU - Yerkes, K. L. T1 - Energy transport in closed quantum systems. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2012/03// VL - 85 IS - 3 M3 - Article SP - 1 EP - 11 SN - 15393755 AB - We examine energy transport in an ensemble of closed quantum systems driven by stochastic perturbations. One can show that the probability and energy fluxes can be described in terms of quantum advection modes (QAMs) associated with the off-diagonal elements of the density matrix. These QAMs play the role of Landauer channels in a system with discrete energy spectrum and the eigenfunctions that cannot be described as plane waves. In order to determine the type of correlations that exist between the direction and magnitudes of each QAM and the average direction of energy and probability fluxes we have numerically solved the time-dependent Schrödinger equation describing a single particle trapped in a parabolic potential well which is perturbed by stochastic ripples. The ripples serve as a localized energy source and are offset to one side of the potential well. As the result a nonzero net energy flux flows from one part of the potential well to another across the symmetry center of the potential. We find that some modes exhibit positive correlation with the direction of the energy flow. Other modes, that carry a smaller energy per unit of the probability flux, anticorrelate with the energy flow and thus provide a backflow of the probability. The overall picture of energy transport that emerges from our results is very different from the conventional one based on a system with continuous energy spectrum. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENERGY transfer KW - QUANTUM theory KW - STOCHASTIC analysis KW - PERTURBATION (Mathematics) KW - ADVECTION KW - EIGENVALUES KW - SYMMETRY (Physics) N1 - Accession Number: 77666569; Levin, G. A. 1 Jones, W. A. 1 Walczak, K. 1 Yerkes, K. L. 1; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: Mar2012, Vol. 85 Issue 3, p1; Subject Term: ENERGY transfer; Subject Term: QUANTUM theory; Subject Term: STOCHASTIC analysis; Subject Term: PERTURBATION (Mathematics); Subject Term: ADVECTION; Subject Term: EIGENVALUES; Subject Term: SYMMETRY (Physics); Number of Pages: 11p; Document Type: Article L3 - 10.1103/PhysRevE.85.031109 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77666569&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fritsche, Miriam AU - Pandey, Ras B. AU - Farmer, Barry L. AU - Heermann, Dieter W. T1 - Conformational Temperature-Dependent Behavior of a Histone H2AX: A Coarse-Grained Monte Carlo Approach Via Knowledge-Based Interaction Potentials. JO - PLoS ONE JF - PLoS ONE Y1 - 2012/03// VL - 7 IS - 3 M3 - Article SP - 1 EP - 8 PB - Public Library of Science SN - 19326203 AB - Histone proteins are not only important due to their vital role in cellular processes such as DNA compaction, replication and repair but also show intriguing structural properties that might be exploited for bioengineering purposes such as the development of nano-materials. Based on their biological and technological implications, it is interesting to investigate the structural properties of proteins as a function of temperature. In this work, we study the spatial response dynamics of the histone H2AX, consisting of 143 residues, by a coarse-grained bond fluctuating model for a broad range of normalized temperatures. A knowledge-based interaction matrix is used as input for the residue-residue Lennard-Jones potential. We find a variety of equilibrium structures including global globular configurations at low normalized temperature (T*=0:014), combination of segmental globules and elongated chains (T*=0:016,0:017), predominantly elongated chains (T*=0:019,0:020), as well as universal SAW conformations at high normalized temperature (T*0:023). The radius of gyration of the protein exhibits a non-monotonic temperature dependence with a maximum at a characteristic temperature (T* c≥0:019) where a crossover occurs from a positive (stretching at T*≤T*c ) to negative (contraction at T*≤T* c ) thermal response on increasing T*. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HISTONES KW - DNA KW - PROTEINS KW - NANOSTRUCTURED materials KW - TEMPERATURE KW - NUCLEIC acids N1 - Accession Number: 79930443; Fritsche, Miriam 1; Email Address: fritsche@tphys.uni-heidelberg.de Pandey, Ras B. 2 Farmer, Barry L. 3 Heermann, Dieter W. 1,4,5; Affiliation: 1: Institute for Theoretical Physics, University of Heidelberg, Heidelberg, Germany 2: Department of Physics and Astronomy, University of Southern Mississippi, Hattiesburg, Mississippi, United States of America 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio, United States of America 4: Institute for Molecular Biophysics, The Jackson Laboratory, Bar Harbor, Maine, United States of America 5: Interdisciplinary Center for Scientific Computing, Heidelberg, Germany; Source Info: Mar2012, Vol. 7 Issue 3, p1; Subject Term: HISTONES; Subject Term: DNA; Subject Term: PROTEINS; Subject Term: NANOSTRUCTURED materials; Subject Term: TEMPERATURE; Subject Term: NUCLEIC acids; Number of Pages: 8p; Document Type: Article L3 - 10.1371/journal.pone.0032075 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=79930443&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schmidt, Jacob B. AU - Ganguly, Biswa N. T1 - Point-to-plane pulsed discharge initiated flame structure modification in propane–air flame. JO - Journal of Physics: D Applied Physics JF - Journal of Physics: D Applied Physics Y1 - 2012/02/29/ VL - 45 IS - 8 M3 - Correction Notice SP - 1 EP - 1 SN - 00223727 AB - The units of the x-axis in figure 10 should be μs and not ms. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physics: D Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC discharges KW - FLAME KW - PROPANE N1 - Accession Number: 97861987; Schmidt, Jacob B. 1 Ganguly, Biswa N. 2; Affiliation: 1: Spectral Energies Inc, Dayton, OH 45432, USADepartment of Physics, Faculty of Science, Karabük University, Karabük 78050, Turkey 2: Air Force Research Laboratory, WPAFB, OH 45432, USA; Source Info: 2/29/2012, Vol. 45 Issue 8, p1; Subject Term: ELECTRIC discharges; Subject Term: FLAME; Subject Term: PROPANE; NAICS/Industry Codes: 424710 Petroleum Bulk Stations and Terminals; NAICS/Industry Codes: 454312 Liquefied petroleum gas (bottled gas) dealers; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 1p; Document Type: Correction Notice L3 - 10.1088/0022-3727/45/8/089601 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=97861987&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yan Wang AU - Urbas, Augustine AU - Quan Li T1 - Reversible Visible-Light Tuning of Self-Organized Helical Superstructures Enabled by Unprecedented Light-Driven Axially Chiral Molecular Switches. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2012/02/22/ VL - 134 IS - 7 M3 - Article SP - 3342 EP - 3345 SN - 00027863 AB - Two enantiomeric light-driven azo molecular switches with axial chirality and extended conjugation were found to exhibit unprecedented reversible photoisomerization in both organic-solvent and liquid-crystal media only upon visible-light irradiation. When doped in an achiral liquid crystal with a different concentration, the chiral switch was able either to immediately induce an optically tunable helical superstructure or to retain an achiral liquid-crystal phase whose helical superstructure was induced and tuned reversibly upon visible-light irradiation. Furthermore, reversible dynamic red, green, and blue reflection achieved only by using visible light was demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOISOMERIZATION KW - MOLECULAR switches KW - AZO compounds KW - ELECTROMAGNETIC waves KW - REVERSIBLE processes (Thermodynamics) KW - MOLECULAR self-assembly N1 - Accession Number: 72636150; Yan Wang 1 Urbas, Augustine 2 Quan Li 1; Email Address: qlil@kent.edu; Affiliation: 1: Liquid Crystal Institute, Kent State University, Kent, Ohio 44242, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433, United States; Source Info: 2/22/2012, Vol. 134 Issue 7, p3342; Subject Term: PHOTOISOMERIZATION; Subject Term: MOLECULAR switches; Subject Term: AZO compounds; Subject Term: ELECTROMAGNETIC waves; Subject Term: REVERSIBLE processes (Thermodynamics); Subject Term: MOLECULAR self-assembly; Number of Pages: 4p; Document Type: Article L3 - 10.1021/ja211837f UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=72636150&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liang Yan AU - Min Wang AU - Raju, N. P. AU - Epstein, Arthur AU - Loon-Seng Tan AU - Urbas, Augustine AU - Chiang, Long Y. AU - Bin Hu T1 - Magnetocurrent of Charge-Polarizable C60-Diphenylaminofluorene Monoadduct-Derived Magnetic Nanocomposites. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2012/02/22/ VL - 134 IS - 7 M3 - Article SP - 3549 EP - 3554 SN - 00027863 AB - We demonstrated the strategy of a nanocomposite design by the incorporation of both a delocalized π-electrons system in a closely bound acceptor–donor analogue chromophore, based on charge-polarizable C60(>DPAF-C9) nanostructure 1, and spin-polarized d-electrons in the form of γ-FeOx nanoparticles. Facile intramolecular electron transfer from the DPAF-C9 donor moiety to the C60 acceptor cage of 1 upon activation to the excited state with a long lifetime of the charge-separated state forms a possible mechanism to integrate semiconducting and magnetic properties in a single system. We observed an appreciable magnetocurrent (MC) of C60(>DPAF-C9)-encapsulated magnetic γ-FeOx nanoparticles in PMMA matrix upon applying a magnetic field from 0 to 300 mT at either 77 K (12% MC) or 300 K (4.5% MC). Interestingly, the detailed analysis of magnetocurrent curve profiles taken at 77 K allowed us to conclude that the measured magnetocurrent may be attributed to the contributions from magnetic field-dependent excited-state populations in semiconducting structure (density-based MC), magnetism from magnetic structure (mobility-based MC), and product of density and mobility-based MC components (π–d electronic coupling). At the higher temperature region up to 300 K, the semiconducting mechanism dominated the determining factor of measured magnetocurrent. This experimental observation indicated the feasibility of combining delocalized π electrons and spin-polarized d electrons through charge transfer to induce internally coupled dual mobility- and density-based MC through the modulation of spin polarization and excited states in semiconducting/magnetic hybrid materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PI electron theory KW - DYNAMICS of a particle KW - CHROMOPHORES KW - ELECTRON donor-acceptor complexes KW - POLARIZABILITY (Electricity) KW - NANOCOMPOSITE materials -- Magnetic properties N1 - Accession Number: 72636173; Liang Yan 1 Min Wang 2 Raju, N. P. 3 Epstein, Arthur 3 Loon-Seng Tan 4 Urbas, Augustine 4 Chiang, Long Y. 2; Email Address: long•chiang@uml.edu Bin Hu 1; Email Address: bhu@utk.edu; Affiliation: 1: Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States 2: Department of Chemistry, Institute of Nanoscience and Engineering Technology, University of Massachusetts, Lowell, Massachusetts 01854, United States 3: Department of Physics, Ohio State University, Columbus, Ohio 43210, United States 4: AFRL/RXBN, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States; Source Info: 2/22/2012, Vol. 134 Issue 7, p3549; Subject Term: PI electron theory; Subject Term: DYNAMICS of a particle; Subject Term: CHROMOPHORES; Subject Term: ELECTRON donor-acceptor complexes; Subject Term: POLARIZABILITY (Electricity); Subject Term: NANOCOMPOSITE materials -- Magnetic properties; Number of Pages: 6p; Document Type: Article L3 - 10.1021/ja210812u UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=72636173&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schmidt, Jacob B. AU - Ganguly, Biswa N. T1 - Erratum: Point-to-plane pulsed discharge initiated flame structure modification in propane-air flame. JO - Journal of Physics: D Applied Physics JF - Journal of Physics: D Applied Physics Y1 - 2012/02/21/ VL - 45 IS - 4 M3 - Correction notice SP - 1 EP - 1 SN - 00223727 AB - A correction to the article "Point-to-plane pulsed discharge initiated flame structure modification in propane-air flame" that was published in the February 10, 2012 issue is presented. KW - AXES N1 - Accession Number: 73832608; Schmidt, Jacob B. 1 Ganguly, Biswa N. 2; Affiliation: 1: Spectral Energies Inc, Dayton, OH 45432, USA 2: Air Force Research Laboratory, WPAFB, OH 45432, USA; Source Info: 2/21/2012, Vol. 45 Issue 4, p1; Subject Term: AXES; NAICS/Industry Codes: 332216 Saw Blade and Handtool Manufacturing; NAICS/Industry Codes: 332210 Cutlery and hand tool manufacturing; Number of Pages: 1p; Document Type: Correction notice L3 - 10.1088/0022-3727/45/8/089601 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73832608&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stuckey, N.C. AU - Vasquez, J.R. AU - Graham, S.R. AU - Hopkinson, K.M. AU - Maybeck, P.S. T1 - Stochastic control of computer networks. JO - IET Control Theory & Applications JF - IET Control Theory & Applications Y1 - 2012/02/16/ VL - 6 IS - 3 M3 - Article SP - 403 EP - 411 PB - Institution of Engineering & Technology SN - 17518644 AB - Although transmission control protocol (TCP) is a proven protocol in networks with congestion-dominated packet losses, it is a poor match for mobile networks with bit-error-dominated packet losses. This article considers a control theoretic approach for more effective flow control in reliable network transmissions. An extended Kalman filter is developed to estimate two key network state indicators: individual queue sizes and packet arrival rates to each queue. A source node estimates these parameters for each of the downstream queues currently servicing packet streams originating from itself. These estimates can be used by an linear quadratic Gaussian (LQG) 'steady-state' linear perturbation proportional-plus-integral (PI) controller to regulate the size of downstream queues by altering the packet rate sent towards a particular downstream queue. Although this work demonstrates the effects of a single controller, it is anticipated that a network wide deployment could achieve significant throughput and stability benefits. The primary contributions of this work include: (a) development of the necessary Kalman filter theory, (b) design of a network state estimator using a transient queue behaviour model, (c) equations for the LQG synthesis of a steady-state linear perturbation PI controller and (d) demonstration of the resulting controller performance, which shows significant improvement over traditional TCP implementations. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Control Theory & Applications is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STOCHASTIC control theory KW - COMPUTER networks KW - TCP/IP (Computer network protocol) KW - INTERNET traffic KW - DATA packets & packeting KW - BIT error rate KW - PID controllers KW - H2 control N1 - Accession Number: 72017265; Stuckey, N.C. 1 Vasquez, J.R. 2 Graham, S.R. 3 Hopkinson, K.M. 3 Maybeck, P.S. 3; Affiliation: 1: White House Communications Agency, Joint Base Anacostia-Bolling, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, USA 3: Air Force Institute of Technology, Wright-Patterson AFB, USA; Source Info: 2/16/2012, Vol. 6 Issue 3, p403; Subject Term: STOCHASTIC control theory; Subject Term: COMPUTER networks; Subject Term: TCP/IP (Computer network protocol); Subject Term: INTERNET traffic; Subject Term: DATA packets & packeting; Subject Term: BIT error rate; Subject Term: PID controllers; Subject Term: H2 control; NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; Number of Pages: 9p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1049/iet-cta.2010.0432 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=72017265&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Costantine, Joseph AU - Tawk, Youssef AU - Christodoulou, Christos G. AU - Lyke, James C. AU - De Flaviis, Franco AU - Grau Besoli, Alfred AU - Barbin, Silvio E. T1 - Analyzing the Complexity and Reliability of Switch-Frequency-Reconfigurable Antennas Using Graph Models. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2012/02/15/Feb2012 Part 2 Part 2 VL - 60 IS - 2 M3 - Article SP - 811 EP - 820 SN - 0018926X AB - This paper addresses the functional reliability and the complexity of reconfigurable antennas using graph models. The correlation between complexity and reliability for any given reconfigurable antenna is defined. Two methods are proposed to reduce failures and improve the reliability of reconfigurable antennas. The failures are caused by the reconfiguration technique or by the surrounding environment. These failure reduction methods proposed are tested and examples are given which verify these methods. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNAS (Electronics) -- Design & construction KW - RADIO frequency microelectromechanical systems KW - GRAPH theory KW - RELIABILITY (Engineering) KW - REDUNDANCY (Engineering) KW - Antennas KW - Complexity KW - Complexity theory KW - graph theory KW - Radio frequency KW - reconfigurable antennas KW - reliability KW - Reliability engineering KW - Resonant frequency KW - Switches N1 - Accession Number: 71539969; Costantine, Joseph 1 Tawk, Youssef 2 Christodoulou, Christos G. 2 Lyke, James C. 3 De Flaviis, Franco 4 Grau Besoli, Alfred 5 Barbin, Silvio E. 6; Affiliation: 1: Electrical Engineering Department, California State University Fullerton, Fullerton, CA, USA 2: Electrical and Computer Engineering Department, University of New Mexico, Albuquerque, NM, USA 3: Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, NM, USA 4: Department of Electrical Engineering and Computer Science, University of California Irvine, Irvine, CA, USA 5: Broadcom Corporation, Irvine, CA, USA 6: Electrical and Computer Engineering Department, University of Sao Paulo, Sao Paulo, Brazil; Source Info: Feb2012 Part 2 Part 2, Vol. 60 Issue 2, p811; Subject Term: ANTENNAS (Electronics) -- Design & construction; Subject Term: RADIO frequency microelectromechanical systems; Subject Term: GRAPH theory; Subject Term: RELIABILITY (Engineering); Subject Term: REDUNDANCY (Engineering); Author-Supplied Keyword: Antennas; Author-Supplied Keyword: Complexity; Author-Supplied Keyword: Complexity theory; Author-Supplied Keyword: graph theory; Author-Supplied Keyword: Radio frequency; Author-Supplied Keyword: reconfigurable antennas; Author-Supplied Keyword: reliability; Author-Supplied Keyword: Reliability engineering; Author-Supplied Keyword: Resonant frequency; Author-Supplied Keyword: Switches; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TAP.2011.2173104 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71539969&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tawk, Youssef AU - Costantine, Joseph AU - Hemmady, Sameer AU - Balakrishnan, Ganesh AU - Avery, Keith AU - Christodoulou, Christos G. T1 - Demonstration of a Cognitive Radio Front End Using an Optically Pumped Reconfigurable Antenna System (OPRAS). JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2012/02/15/Feb2012 Part 2 Part 2 VL - 60 IS - 2 M3 - Article SP - 1075 EP - 1083 SN - 0018926X AB - A cognitive radio front end using an optically pumped reconfigurable antenna system (OPRAS) is investigated. The scheme consists of a ultrawidebhand antenna and a reconfigurable narrowband antenna in close proximity to one another. The narrowband reconfigurability is achieved by a integratinglaser diodes within the antenna structure to control the switching state of photoconductive silicon switches. This scheme has the advantage of eliminating the use of optical fiber cables to guide light to the switches, and enables easier integration of the reconfigurable antenna in a complete communication system. The performance of the proposed technique is presented, and comparisons are made to other commonly used switching techniques for reconfigurable antennas, such as techniques based on PIN diodes and RF microlectromechanical systems integration. The application of this antenna design scheme serving as the receive channel in a cognitive radio communication link is also demonstrated. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOFTWARE radio KW - ADAPTIVE antennas KW - OPTICAL pumping KW - ULTRA-wideband antennas KW - LASERS KW - DESIGN & construction KW - Antenna measurements KW - Cognitive radio KW - Frequency measurement KW - laser diodes KW - Optical switches KW - photoconductivity KW - reconfigurable antenna KW - Semiconductor lasers KW - Sensors KW - silicon KW - Ultra wideband antennas KW - ultrawideband (UWB) N1 - Accession Number: 71540013; Tawk, Youssef 1 Costantine, Joseph 2 Hemmady, Sameer 1 Balakrishnan, Ganesh 3 Avery, Keith 4 Christodoulou, Christos G. 1; Affiliation: 1: Electrical & Computer Engineering Department, University of New Mexico, Albuquerque, NM, USA 2: Electrical Engineering Department, California State University Fullerton, Fullerton, CA, USA 3: Center for High Technology Materials, University of New Mexico, Albuquerque, NM, USA 4: Air Force Research Laboratory, Space Vehicles Directorate Kirtland AFB, Albuquerque, NM, USA; Source Info: Feb2012 Part 2 Part 2, Vol. 60 Issue 2, p1075; Subject Term: SOFTWARE radio; Subject Term: ADAPTIVE antennas; Subject Term: OPTICAL pumping; Subject Term: ULTRA-wideband antennas; Subject Term: LASERS; Subject Term: DESIGN & construction; Author-Supplied Keyword: Antenna measurements; Author-Supplied Keyword: Cognitive radio; Author-Supplied Keyword: Frequency measurement; Author-Supplied Keyword: laser diodes; Author-Supplied Keyword: Optical switches; Author-Supplied Keyword: photoconductivity; Author-Supplied Keyword: reconfigurable antenna; Author-Supplied Keyword: Semiconductor lasers; Author-Supplied Keyword: Sensors; Author-Supplied Keyword: silicon; Author-Supplied Keyword: Ultra wideband antennas; Author-Supplied Keyword: ultrawideband (UWB); Number of Pages: 9p; Document Type: Article L3 - 10.1109/TAP.2011.2173139 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71540013&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bouvier, S. AU - Benmhenni, N. AU - Tirry, W. AU - Gregory, F. AU - Nixon, M.E. AU - Cazacu, O. AU - Rabet, L. T1 - Hardening in relation with microstructure evolution of high purity α-titanium deformed under monotonic and cyclic simple shear loadings at room temperature JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2012/02/15/ VL - 535 M3 - Article SP - 12 EP - 21 SN - 09215093 AB - Abstract: The aim of this paper is to gain understanding of the quasi-static, large strain deformation behavior at room-temperature of high-purity α-Ti with an initial split-basal texture. Simple shear tests were conducted along different directions in order to quantify the material''s anisotropy and hardening evolution for different strain paths such as monotonic, Bauschinger, and cyclic loadings. The stress–strain curves indicate that the material displays strong anisotropy in the flow behavior. In order to capture the link between microstructure evolution (occurrence of twinning, grain size evolution, etc.) and the macroscopic response, a thoroughly detailed multi-scale characterization using scanning electron microscope (SEM) observations and electron backscattered diffraction (EBSD) analysis was also conducted. Specifically, EBSD analyses indicate that the twin activity and grain fragmentation are responsible for the observed difference between the macroscopic hardening rates corresponding to different directions and loading paths. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - TITANIUM KW - SHEAR (Mechanics) KW - LOADS (Mechanics) KW - TEMPERATURE effect KW - DEFORMATIONS (Mechanics) KW - ANISOTROPY KW - FRAGMENTATION reactions KW - SURFACE hardening KW - EBSD KW - Grain fragmentation KW - Hardening KW - High purity titanium KW - Simple shear KW - Twinning N1 - Accession Number: 71510989; Bouvier, S. 1; Email Address: salima.bouvier@utc.fr Benmhenni, N. 1 Tirry, W. 2,3 Gregory, F. 1 Nixon, M.E. 4 Cazacu, O. 5 Rabet, L. 2; Affiliation: 1: LSPM-CNRS, UPR3407, University Paris 13, 99 Av. J.B. Clément, 93430 Villetaneuse, France 2: Royal Military Academy, Renaissancelaan 30, 1000 Brussels, Belgium 3: EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium 4: Air Force Research Laboratory, Eglin, FL 32579, USA 5: Department of Mechanical and Aerospace Engineering, University of Florida, REEF, 1350 N Poquito Road, Shalimar, FL 32539, USA; Source Info: Feb2012, Vol. 535, p12; Subject Term: MICROSTRUCTURE; Subject Term: TITANIUM; Subject Term: SHEAR (Mechanics); Subject Term: LOADS (Mechanics); Subject Term: TEMPERATURE effect; Subject Term: DEFORMATIONS (Mechanics); Subject Term: ANISOTROPY; Subject Term: FRAGMENTATION reactions; Subject Term: SURFACE hardening; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: Grain fragmentation; Author-Supplied Keyword: Hardening; Author-Supplied Keyword: High purity titanium; Author-Supplied Keyword: Simple shear; Author-Supplied Keyword: Twinning; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.msea.2011.12.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71510989&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shade, P.A. AU - Uchic, M.D. AU - Dimiduk, D.M. AU - Viswanathan, G.B. AU - Wheeler, R. AU - Fraser, H.L. T1 - Size-affected single-slip behavior of René N5 microcrystals JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2012/02/15/ VL - 535 M3 - Article SP - 53 EP - 61 SN - 09215093 AB - Abstract: Microcompression testing was conducted on the cast single crystal nickel-base superalloy René N5. Microcrystals were selectively fabricated from either dendrite core or interdendritic regions. The compression axis was oriented for single-slip deformation and microcrystal diameters ranged from 2.5 to 80μm. All microcrystals displayed several hallmarks of size-affected plastic flow, including a size-affected and stochastic flow-stress and initial strain hardening rate, as well as an intermittent flow response. The magnitude of size-affected flow-stress scaling behavior was dependent upon the plastic strain level of the flow-stress measurement, with increasing size-dependence for increasing strain levels. TEM analysis demonstrated the activation of multiple slip-systems, despite the microcrystals being oriented for single-slip deformation. Zig-zag slip was also observed in microcrystals that achieved flow stresses of ∼1300MPa or higher. For microcrystals fabricated within interdendritic regions the flow-stress values are, on average, lower compared to dendrite core microcrystals. This difference in flow-stress is especially pronounced for microcrystals which are 5μm in diameter. The microcrystal diameter for which bulk-like properties are estimated to be observed is approximately 350μm, which is approaching the measured primary dendrite arm spacing for this crystal (430μm). [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Compression testing KW - MICROSTRUCTURE KW - FOUNDING KW - NICKEL alloys KW - HEAT resistant alloys KW - DENDRITIC crystals KW - STOCHASTIC processes KW - STRAINS & stresses (Mechanics) KW - ACTIVATION (Chemistry) KW - Microcompression KW - Nickel-based superalloys KW - Size effect N1 - Accession Number: 71510994; Shade, P.A. 1,2; Email Address: paul.shade@wpafb.af.mil Uchic, M.D. 2 Dimiduk, D.M. 2 Viswanathan, G.B. 3 Wheeler, R. 3 Fraser, H.L. 1; Affiliation: 1: Department of Materials Science and Engineering, The Ohio State University, 477 Watts Hall, 2041 College Road, Columbus, OH 43210, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, 2230 10th Street, Wright-Patterson AFB, OH 45433, USA 3: UES Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, USA; Source Info: Feb2012, Vol. 535, p53; Subject Term: MATERIALS -- Compression testing; Subject Term: MICROSTRUCTURE; Subject Term: FOUNDING; Subject Term: NICKEL alloys; Subject Term: HEAT resistant alloys; Subject Term: DENDRITIC crystals; Subject Term: STOCHASTIC processes; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ACTIVATION (Chemistry); Author-Supplied Keyword: Microcompression; Author-Supplied Keyword: Nickel-based superalloys; Author-Supplied Keyword: Size effect; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.msea.2011.12.041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71510994&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rau, Ileana AU - Tane, Alexandrina AU - Zgarian, Roxana AU - Meghea, Aurelia AU - Grote, James G. AU - Kajzar, Francois T1 - Stability of Selected Chromophores in Biopolymer Matrix. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2012/02/15/ VL - 554 IS - 1 M3 - Article SP - 43 EP - 55 SN - 15421406 AB - Photochemical and thermal stability of thin films formed from selected optically responsive chromophores embedded in deoxyribonucleic acid (DNA), Collagen and in the complex formed by DNA biopolymer and the surfactant hexadecyl ammonium (CTMA) matrix was studied by UV-VIS and compared with that observed when using some synthetic polymers (polymethylmetacrylate – PMMA, polycarbonate – PC). In particular the influence of external stimuli, such as heating and UV light on the chemical degradation process was investigated. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHROMOPHORES KW - BIOPOLYMERS KW - THIN films KW - DNA KW - COLLAGEN KW - SURFACE active agents KW - HEATING KW - PHOTODEGRADATION KW - Aggregation KW - biopolymers KW - chemical degradation KW - kinetics degradation parameters KW - luminophores KW - photodegradation N1 - Accession Number: 70284940; Rau, Ileana 1; Email Address: ileana.rau@upb.ro Tane, Alexandrina 1 Zgarian, Roxana 1 Meghea, Aurelia 1 Grote, James G. 2 Kajzar, Francois 1,3; Affiliation: 1: University POLITEHNICA of Bucharest, Faculty of Applied Chemistry and Materials Sciences, Romania 2: US Air Force Research Laboratory, Materials & Manufacturing Directorate, AFRL/MLPS, U.S.A. 3: Université d’Angers, Institut des Sciences et Technologies Moléculaires d’Angers, France; Source Info: Feb2012, Vol. 554 Issue 1, p43; Subject Term: CHROMOPHORES; Subject Term: BIOPOLYMERS; Subject Term: THIN films; Subject Term: DNA; Subject Term: COLLAGEN; Subject Term: SURFACE active agents; Subject Term: HEATING; Subject Term: PHOTODEGRADATION; Author-Supplied Keyword: Aggregation; Author-Supplied Keyword: biopolymers; Author-Supplied Keyword: chemical degradation; Author-Supplied Keyword: kinetics degradation parameters; Author-Supplied Keyword: luminophores; Author-Supplied Keyword: photodegradation; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1080/15421406.2012.633025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70284940&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schaeublin, Nicole M. AU - Braydich-Stolle, Laura K. AU - Maurer, Elizabeth I. AU - Park, Kyoungweon AU - MacCuspie, Robert I. AU - Afrooz, A. R. M. Nabiul AU - Vaia, Richard A. AU - Saleh, Navid B. AU - Hussain, Saber M. T1 - Does Shape Matter? Bioeffectsof Gold Nanomaterialsin a Human Skin Cell Model. JO - Langmuir JF - Langmuir Y1 - 2012/02/14/ VL - 28 IS - 6 M3 - Article SP - 3248 EP - 3258 SN - 07437463 AB - Gold nanomaterials (AuNMs) have distinctive electronicand opticalproperties, making them ideal candidates for biological, medical,and defense applications. Therefore, it is imperative to evaluatethe potential biological impact of AuNMs before employing them inany application. This study investigates two AuNMs with differentaspect ratios (AR) on mediation of biological responses in the humankeratinocyte cell line (HaCaT) to model potential skin exposure tothese AuNMs. The cellular responses were evaluated by cell viability,reactive oxygen species (ROS) generation, alteration in gene and proteinexpression, and inflammatory response. Gold nanospheres, nominally20 nm in diameter and coated with mercaptopropane sulfonate (AuNS–MPS),formed agglomerates when dispersed in cell culture media, had a largefractal dimension (Df= 2.57 ± 0.4)(i.e., tightly bound and densely packed) and were found to be nontoxiceven at the highest dose of 100 μg/mL. Highly uniform, 16.7nm diameter, and 43.8 nm long polyethylene glycol-capped gold nanorods(AuNR–PEG) also formed agglomerates when dispersed into thecell culture media. However, the agglomerates had a smaller fractaldimension (Df= 1.28 ± 0.08) (i.e.,loosely bound) and were found to be cytotoxic to the HaCaT cells,with a significant decrease in cell viability occurring at 25 μg/mLand higher. Moreover, AuNR–PEG caused significant ROS productionand up-regulated several genes involved in cellular stress and toxicity.These results, combined with increased levels of inflammatory andapoptotic proteins, demonstrated that the AuNR–PEG inducedapoptosis. Exposure to AuNS–MPS, however, did not show anyof the detrimental effects observed from the AuNR–PEG. Therefore,we conclude that shape appears to play a key role in mediating thecellular response to AuNMs. [ABSTRACT FROM AUTHOR] AB - Copyright of Langmuir is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLOIDAL gold KW - OPTICAL properties KW - KERATINOCYTES KW - SKIN KW - GENE expression KW - AGGLOMERATION (Materials) KW - CELL culture N1 - Accession Number: 71884075; Schaeublin, Nicole M. 1 Braydich-Stolle, Laura K. 1 Maurer, Elizabeth I. 1 Park, Kyoungweon 1 MacCuspie, Robert I. 1 Afrooz, A. R. M. Nabiul 1 Vaia, Richard A. 1 Saleh, Navid B. 1 Hussain, Saber M. 1; Affiliation: 1: Applied Biotechnology Branch, †Human Effectiveness Directorate, 711Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, Ohio 45431, United States; Source Info: Feb2012, Vol. 28 Issue 6, p3248; Subject Term: COLLOIDAL gold; Subject Term: OPTICAL properties; Subject Term: KERATINOCYTES; Subject Term: SKIN; Subject Term: GENE expression; Subject Term: AGGLOMERATION (Materials); Subject Term: CELL culture; NAICS/Industry Codes: 212210 Iron Ore Mining; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71884075&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kousalya, Arun S. AU - Hunter, Chad N. AU - Putnam, Shawn A. AU - Miller, Timothy AU - Fisher, Timothy S. T1 - Photonically enhanced flow boiling in a channel coated with carbon nanotubes. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/02/13/ VL - 100 IS - 7 M3 - Article SP - 071601 PB - American Institute of Physics SN - 00036951 AB - High heat dissipation rates are enabled by multi-phase cooling schemes owing to latent heat uptake. We demonstrate enhanced flow boiling from a carbon nanotube (CNT)-coated copper surface exposed to low-intensity ultraviolet (UV)-visible excitation. Compared to non-illuminated results, the average boiling incipience temperature decreased by 4.6 °C and heat transfer coefficients improved by 41.5% with light exposure. These improved results are attributed to augmented hydrophilicity upon exposure to UV light and possible nanoscale opto-thermal effects, and suggest opportunities for active temperature control of temperature-sensitive devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - ENERGY dissipation KW - COPPER surfaces KW - ELECTRONIC excitation KW - ULTRAVIOLET radiation KW - HEAT transfer KW - TEMPERATURE control N1 - Accession Number: 71812400; Kousalya, Arun S. 1,2 Hunter, Chad N. 3 Putnam, Shawn A. 3,4 Miller, Timothy 1 Fisher, Timothy S. 1,2,3; Affiliation: 1: Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, 2: School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, 3: Thermal Sciences and Materials Branch, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, Ohio 45433, 4: Universal Technology Corporation, Dayton, Ohio 45434,; Source Info: 2/13/2012, Vol. 100 Issue 7, p071601; Subject Term: CARBON nanotubes; Subject Term: ENERGY dissipation; Subject Term: COPPER surfaces; Subject Term: ELECTRONIC excitation; Subject Term: ULTRAVIOLET radiation; Subject Term: HEAT transfer; Subject Term: TEMPERATURE control; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; Number of Pages: 4p; Illustrations: 1 Color Photograph, 2 Diagrams, 1 Graph; Document Type: Article L3 - 10.1063/1.3681594 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71812400&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maaß, R. AU - Uchic, M.D. T1 - In-situ characterization of the dislocation-structure evolution in Ni micro-pillars JO - Acta Materialia JF - Acta Materialia Y1 - 2012/02// VL - 60 IS - 3 M3 - Article SP - 1027 EP - 1037 SN - 13596454 AB - Abstract: The high strength of micro-crystals is determined in the early flow regime, where a transition from elastic to plastic flow is obscured if compared to stress–strain data from bulk single crystals. In the present work we therefore focus on the evolution of dislocation structures in Ni micro-pillars during early deformation by employing in-situ Laue micro-diffraction. It will be shown that substantial changes in the lattice fine structure, such as multiple subgrain formation and significant rotational gradients, can be resolved prior to the onset of large strain generation. The results reveal more pronounced effects for smaller sample dimensions and also suggest that most of the evolving dislocation structure is formed prior to the occurrence of large strain bursts. A clear increase in dislocation density as a function of strain is observed, which we discuss in the context of size-dependent strain hardening and exhaustion hardening. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISLOCATIONS in metals KW - MOLECULAR structure KW - STRAINS & stresses (Mechanics) KW - DEFORMATIONS (Mechanics) KW - MICROHARDNESS KW - CRYSTAL lattices KW - ELASTICITY KW - Micro-compression KW - Plastic deformation KW - Single crystal KW - Strain gradient KW - Strain hardening N1 - Accession Number: 70951812; Maaß, R. 1; Email Address: maass@caltech.edu Uchic, M.D. 2; Affiliation: 1: Paul Scherrer Institute, CH-5232 Villigen, Switzerland 2: Air Force Research Laboratory, Materials & Manufacturing Directorate, 2230 10th Street, Wright Patterson AFB, OH 45433, USA; Source Info: Feb2012, Vol. 60 Issue 3, p1027; Subject Term: DISLOCATIONS in metals; Subject Term: MOLECULAR structure; Subject Term: STRAINS & stresses (Mechanics); Subject Term: DEFORMATIONS (Mechanics); Subject Term: MICROHARDNESS; Subject Term: CRYSTAL lattices; Subject Term: ELASTICITY; Author-Supplied Keyword: Micro-compression; Author-Supplied Keyword: Plastic deformation; Author-Supplied Keyword: Single crystal; Author-Supplied Keyword: Strain gradient; Author-Supplied Keyword: Strain hardening; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.actamat.2011.11.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70951812&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dudley, Jonathan G. AU - Ukeiley, Lawrence T1 - Numerical Investigation of a Cylinder Immersed in a Supersonic Boundary Layer. JO - AIAA Journal JF - AIAA Journal Y1 - 2012/02// VL - 50 IS - 2 M3 - Article SP - 257 EP - 270 SN - 00011452 AB - Detached-eddy simulations have been carried out for flow past a circular cylinder in close proximity to a planar wall within a supersonic boundary layer. Four gap heights and two rod diameters with a boundary-layer-to-rod-diameter ratio less than unity were considered for the investigation. The focus of the effort was on the behavior of the flow in the cylinder wake and its interaction with the flat plate boundary layer. The present work reveals a strong effect of the gap ratio and rod diameter on the behavior of this interaction. The investigation indicates strong von Kármán-type vortex shedding exists only when the cylinder is placed in close proximity to the wall. The results further illustrate the forward stagnation point moves from the upper to lower quadrant of the cylinder as the gap height is increased, resulting in a significant separated boundary layer on the floor aft of the cylinder. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CYLINDERS (Engines) -- Aerodynamics KW - GAS flow KW - SUPERSONIC aerodynamics KW - VORTEX shedding KW - BOUNDARY layer (Aerodynamics) KW - FLUID dynamics -- Mathematical models N1 - Accession Number: 71039005; Dudley, Jonathan G. 1 Ukeiley, Lawrence 2; Affiliation: 1: U.S. Air Force Research Laboratory, Eglin Air Force Base, Florida 32542 2: University of Florida, Shalimar, Florida 32579; Source Info: Feb2012, Vol. 50 Issue 2, p257; Subject Term: CYLINDERS (Engines) -- Aerodynamics; Subject Term: GAS flow; Subject Term: SUPERSONIC aerodynamics; Subject Term: VORTEX shedding; Subject Term: BOUNDARY layer (Aerodynamics); Subject Term: FLUID dynamics -- Mathematical models; Number of Pages: 14p; Document Type: Article L3 - 10.2514/1.J050647 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71039005&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wellems, L. David AU - Danhong Huang T1 - Near-field light focusing by a slit array in a planar metal film with nonuniform slit dielectric material. JO - American Journal of Physics JF - American Journal of Physics Y1 - 2012/02// VL - 80 IS - 2 M3 - Article SP - 122 EP - 132 SN - 00029505 AB - We study the interference of evanescent electromagnetic waves generated from multi-slits in a metal film and demonstrate the anomalous bending of light at infrared frequencies due to negative refraction. We also calculate the diffraction of an incident plane electromagnetic waves by a metallic film with an arbitrary linear array of slits, slit separation, and slit dielectric material. In contrast to a double-convex shaped quartz lens, we show that a planar metallic film with a one-dimensional slit array can also focus polarized light in the near-field region when either the slit width or the slit dielectric material becomes spatially nonuniform. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Physics is the property of American Association of Physics Teachers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC films KW - DIELECTRICS KW - ELECTROMAGNETIC waves KW - QUARTZ KW - LENSES KW - OPTICAL polarization KW - SUBSTRATES (Materials science) KW - GREEN'S functions N1 - Accession Number: 71498699; Wellems, L. David 1 Danhong Huang 1; Email Address: danhong.huang@kirtland.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117; Source Info: Feb2012, Vol. 80 Issue 2, p122; Subject Term: METALLIC films; Subject Term: DIELECTRICS; Subject Term: ELECTROMAGNETIC waves; Subject Term: QUARTZ; Subject Term: LENSES; Subject Term: OPTICAL polarization; Subject Term: SUBSTRATES (Materials science); Subject Term: GREEN'S functions; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 327215 Glass Product Manufacturing Made of Purchased Glass; Number of Pages: 11p; Document Type: Article L3 - 10.1119/1.3652700 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71498699&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sihn, Sangwook AU - Varshney, Vikas AU - Roy, Ajit K. AU - Farmer, Barry L. T1 - Prediction of 3D elastic moduli and Poisson’s ratios of pillared graphene nanostructures JO - Carbon JF - Carbon Y1 - 2012/02// VL - 50 IS - 2 M3 - Article SP - 603 EP - 611 SN - 00086223 AB - Abstract: A computational finite element analysis based on a structural molecular mechanics approach was conducted to predict effective mechanical stiffness properties of a novel 3D carbon structure, pillared graphene structure (PGS), which is constituted with several graphene sheets and single-walled carbon nanotubes. Four sets of representative unitcell models were developed atomistically for predicting the mechanical properties of PGSs having different values of pillar length and inter-pillar distance. We introduced proper selections of the periodic geometry and boundary conditions which enabled our unitcell model to yield consistent results on the property prediction without any size or edge effects. The parametric study shows that the pillar length and inter-pillar distance significantly affect the effective in-plane and through-thickness properties. PGSs with shorter pillars in height yield higher planar Young’s and shear moduli, while those with smaller inter-pillar distance yield higher through-thickness moduli. Negative in-plane Poisson’s ratios are observed for all sets of PGSs and are associated with the curvature at the junction. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURES KW - GRAPHENE KW - FINITE element method KW - MOLECULAR dynamics KW - STIFFNESS (Mechanics) KW - CARBON nanotubes KW - POISSON'S ratio KW - ELASTICITY N1 - Accession Number: 66946007; Sihn, Sangwook 1,2; Email Address: sangwook@alumni.stanford.edu Varshney, Vikas 1,3 Roy, Ajit K. 1 Farmer, Barry L. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXBT, Wright-Patterson Air Force Base, OH 45433, USA 2: University of Dayton Research Institute, Multi-Scale Composites and Polymer Division, 300 College Park, Dayton, OH 45469-0060, USA 3: Universal Technology Corporation, Dayton, OH 45432, USA; Source Info: Feb2012, Vol. 50 Issue 2, p603; Subject Term: NANOSTRUCTURES; Subject Term: GRAPHENE; Subject Term: FINITE element method; Subject Term: MOLECULAR dynamics; Subject Term: STIFFNESS (Mechanics); Subject Term: CARBON nanotubes; Subject Term: POISSON'S ratio; Subject Term: ELASTICITY; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.carbon.2011.09.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66946007&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Funke, Gregory J. AU - Knott, Benjamin A. AU - Salas, Eduardo AU - Pavlas, Davin AU - Strang, Adam J. T1 - Conceptualization and Measurement of Team Workload: A Critical Need. JO - Human Factors JF - Human Factors Y1 - 2012/02// VL - 54 IS - 1 M3 - Article SP - 36 EP - 51 SN - 00187208 AB - Objective: The purpose of this article is to present and expand on current theories and measurement techniques for assessing team workload.Background: To date, little research has been conducted on the workload experienced by teams. A validated theory describing team workload, which includes an account of its relation to individual workload, has not been articulated.Method: The authors review several theoretical approaches to team workload. Within the team research literature, attempts to evaluate team workload have typically relied on measures of individual workload. This assumes that such measures retain their validity at the team level of measurement, but empirical research suggests that this method may lack sensitivity to the drivers of team workload.Results: On the basis of these reviews, the authors advance suggestions concerning a comprehensive theory of team workload and methods for assessing it in team settings. The approaches reviewed include subjective, performance, physiological, and strategy shift measures. Theoretical and statistical difficulties associated with aggregating individual-level workload responses to a team-level measure are discussed.Conclusion: Conception and measurement of team workload have not significantly matured alongside developments in individual workload.Application: Team workload remains a complex research area without simple measurement solutions, but as a research domain it remains open for contributions from interested and enterprising researchers. [ABSTRACT FROM PUBLISHER] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMPLOYEES -- Workload KW - TEAMS in the workplace KW - WORK measurement KW - PERFORMANCE evaluation KW - MENTAL work KW - STRATEGIC planning KW - measurement KW - performance measures KW - physiological measures KW - strategy shift measures KW - subjective measures KW - team workload N1 - Accession Number: 70401840; Funke, Gregory J. 1 Knott, Benjamin A. 1 Salas, Eduardo 2 Pavlas, Davin 2 Strang, Adam J. 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 2: University of Central Florida, Orlando, Florida 3: Consortium Research Fellows Program, Alexandria, Virginia; Source Info: Feb2012, Vol. 54 Issue 1, p36; Subject Term: EMPLOYEES -- Workload; Subject Term: TEAMS in the workplace; Subject Term: WORK measurement; Subject Term: PERFORMANCE evaluation; Subject Term: MENTAL work; Subject Term: STRATEGIC planning; Author-Supplied Keyword: measurement; Author-Supplied Keyword: performance measures; Author-Supplied Keyword: physiological measures; Author-Supplied Keyword: strategy shift measures; Author-Supplied Keyword: subjective measures; Author-Supplied Keyword: team workload; Number of Pages: 16p; Document Type: Article L3 - 10.1177/0018720811427901 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70401840&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CONF AU - Cho, Mengu AU - Cooke, David AU - Ferguson, Dale AU - Garrett, Henry B. AU - Hilgers, Alain AU - Lai, Shu T. AU - Roussel, Jean-François AU - Wheelock, Adrian T1 - Special Issue on Spacecraft Charging Technology 2012. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2012/02//2/1/2012 Part 1 Part 1 VL - 40 IS - 2 M3 - Proceeding SP - 138 EP - 138 SN - 00933813 AB - The article offers information related to spacecraft charging technology discussed at the 11th Spacecraft Charging Technology Conference held in Albuquerque, New Mexico in September 2010. It highlights the advent of new solar cycle, new technologies for spacecraft systems and new satellites for space environment. It was organized by the U.S. Spacecraft Air Force Research Laboratory and David Cooke , Dale Ferguson and Shu T. lai were the main organizers. KW - SPACE vehicles KW - SPACE vehicles -- Electrostatic charging KW - SOLAR cycle KW - NATURAL satellites KW - CONGRESSES KW - ALBUQUERQUE (N.M.) KW - Aircraft manufacture KW - Laboratories KW - Materials KW - Military aircraft KW - Propulsion KW - Space vehicles KW - Special issues and sections KW - AIR Force Research Laboratory (Edwards Air Force Base, Calif.) KW - COOKE, David KW - FERGUSON, Dale N1 - Accession Number: 73616346; Cho, Mengu 1 Cooke, David 2 Ferguson, Dale 3 Garrett, Henry B. 4 Hilgers, Alain 5 Lai, Shu T. 6 Roussel, Jean-François 7 Wheelock, Adrian 3; Affiliation: 1: Kyushu Institute of Technology, Kitakyushu, Japan 2: Air Force Research Laboratory, Kirtland AFB, Albuquerque, NM , USA 3: Air Force Research Laboratory, Kirtland AFB, Albuquerque, NM, USA 4: Jet Propulsion Laboratory, Pasadena, CA , USA 5: ESA, Noordwijk, The Netherlands 6: Space Propulsion Laboratory, MIT, Cambridge, MA , USA 7: ONERA, Toulouse, France; Source Info: 2/1/2012 Part 1 Part 1, Vol. 40 Issue 2, p138; Subject Term: SPACE vehicles; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: SOLAR cycle; Subject Term: NATURAL satellites; Subject Term: CONGRESSES; Subject Term: ALBUQUERQUE (N.M.); Author-Supplied Keyword: Aircraft manufacture; Author-Supplied Keyword: Laboratories; Author-Supplied Keyword: Materials; Author-Supplied Keyword: Military aircraft; Author-Supplied Keyword: Propulsion; Author-Supplied Keyword: Space vehicles; Author-Supplied Keyword: Special issues and sections; Company/Entity: AIR Force Research Laboratory (Edwards Air Force Base, Calif.); NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; People: COOKE, David; People: FERGUSON, Dale; Number of Pages: 1p; Document Type: Proceeding L3 - 10.1109/TPS.2011.2180452 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73616346&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ferguson, Dale C. T1 - New Frontiers in Spacecraft Charging. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2012/02//2/1/2012 Part 1 Part 1 VL - 40 IS - 2 M3 - Article SP - 139 EP - 143 SN - 00933813 AB - Spacecraft charging, as a field, is continually being recharged by new developments in understanding, new materials and technologies, and new approaches to both new and old problems. I will discuss some of the new frontiers in understanding spacecraft charging in this paper, as well as referencing relevant papers from the 11th Spacecraft Charging Technology Conference. Spacecraft charging is highly material-property dependent. For example, the secondary electron emission, photoemission, bulk electrical resistivity, and surface resistivity are important parameters that help determine the extent of spacecraft charging (both on the surface and inside the spacecraft) in any given environment. Our understanding of these material properties is one of the new frontiers in spacecraft charging. I will discuss how these fundamental material properties have been found to depend on the following: proper measurement techniques, temperature, radiation flux, electric field, surface treatment, surface contamination from plumes and outgassing, surface modification through arcing and vacuum exposure, and synergistic effects. Modeling of spacecraft charging is a second new frontier. New developments in modeling have both improved our understanding of spacecraft charging and enabled us to model situations that are dynamic and geometrically complex. New schemes for treating both space and time variations of fields, particle fluxes, and spectra have made our modeling more precise and accurate. Now, many more spacecraft are being launched into low Earth orbit and the radiation belts. Modeling charging effects more accurately in those orbits will become more important than ever. A third new frontier in spacecraft charging is novel mitigation techniques. Surface materials and simple passive devices that emit electrons as fast as they are collected seem to make real-time charge mitigation cheaply and reliably achievable for the first time. Novel solar cell configurations and coverglass materials promise to make arcing, both of the primary electrostatic discharge (ESD) type and sustained arcing between cells or strings, a thing of the past. Superconducting cables may obviate the high voltages that lead to arcing. New cooperation between spacecraft and solar array manufacturers and spacecraft charging experts may help to prevent the spacecraft charging mistakes of the past. Furthermore, the final frontier is dealing with new materials and higher power requirements. Lightweight spacecraft materials are, in some cases, prone to exacerbate charging or arcing and may allow transmission of electromagnetic interference into sensitive electronics. New solar cell active materials may increase the effects of arcing on solar cell and solar array performance, even for primary ESD events. Higher power requirements may require longer transmission cables, which may increase the need for higher voltages, making arcing more likely. If superconducting cables become a reality, magnetics may become very important for spacecraft control and stability. What will happen to a superconducting cable if it must carry the increased current in an arcing event of very short duration? [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles -- Electrostatic charging KW - PHOTOEMISSION KW - ELECTRON emission KW - ELECTRICAL resistivity KW - ELECTRIC fields KW - SURFACE preparation KW - ELECTROSTATIC discharges KW - HIGH voltages KW - Aircraft manufacture KW - Arrays KW - Conductivity KW - Electron emission KW - Materials KW - Plasma properties KW - space technology KW - Space vehicles KW - Surface charging N1 - Accession Number: 73616331; Ferguson, Dale C. 1; Affiliation: 1: US Air Force Research Laboratory, Space Vehicles Division, Kirtland Air Force Base, Albuquerque, NM, USA; Source Info: 2/1/2012 Part 1 Part 1, Vol. 40 Issue 2, p139; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: PHOTOEMISSION; Subject Term: ELECTRON emission; Subject Term: ELECTRICAL resistivity; Subject Term: ELECTRIC fields; Subject Term: SURFACE preparation; Subject Term: ELECTROSTATIC discharges; Subject Term: HIGH voltages; Author-Supplied Keyword: Aircraft manufacture; Author-Supplied Keyword: Arrays; Author-Supplied Keyword: Conductivity; Author-Supplied Keyword: Electron emission; Author-Supplied Keyword: Materials; Author-Supplied Keyword: Plasma properties; Author-Supplied Keyword: space technology; Author-Supplied Keyword: Space vehicles; Author-Supplied Keyword: Surface charging; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TPS.2011.2172635 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73616331&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hoffmann, Ryan AU - Dennison, J. R. T1 - Measurement Methods of Electron Emission Over a Full Range of Sample Charging. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2012/02//2/1/2012 Part 1 Part 1 VL - 40 IS - 2 M3 - Article SP - 298 EP - 304 SN - 00933813 AB - Spacecraft charging codes require accurate models of electron yields as a function of accumulated charge to correctly predict the charge buildup on spacecraft. The accumulated charge creates equilibrium surface potentials on spacecraft resulting from interactions with the space plasma environment. There is, however, a complex relation between these emission properties and the charge built up in spacecraft insulators. This paper focuses on different methods appropriate to determine the fundamental electronic material property of the total electron yield as the materials accumulate charge. Three methods for determining the uncharged total yield are presented: 1) The dc continuous beam method is a relatively easy and accurate method appropriate for conductors and semiconductors with maximum total electron yield \sigma\max < 2 and resistivity \rho < 10^17 \ \Omega\cdot\cm; 2) the pulsed-yield method seeks to minimize the effects of charging and is applicable to materials with \sigma\max < 4 and \rho up to >10^24 \ \Omega\cdot\cm; and 3) the yield decay method is a very difficult and time-consuming technique that uses a combination of measurement and modeling to investigate the most difficult materials with \sigma\max > 4 and \rho up to <10^24 \ \Omega\cdot\cm. Data for high-purity polycrystalline Au, Kapton HN and CP1 polyimides, and polycrystalline aluminum oxide ceramic are presented. These data demonstrate the relative strengths and weaknesses of each method but more importantly show that the methods described herein are capable of reliably measuring the total electron yield of almost any spacecraft material. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON emission KW - SPACE vehicles -- Electrostatic charging KW - PLASMA engines KW - ELECTRONS KW - SEMICONDUCTORS KW - POLYIMIDES KW - POLYCRYSTALLINE silicon KW - ALUMINUM oxide KW - Conductivity KW - Electric potential KW - Electron emission KW - Electron yield KW - insulator KW - Insulators KW - Materials KW - measurement techniques KW - Semiconductor device measurement KW - spacecraft charging KW - Surface charging N1 - Accession Number: 73616347; Hoffmann, Ryan 1 Dennison, J. R. 2; Affiliation: 1: Air Force Research Laboratory, Albuquerque, NM, USA 2: Materials Physics Group, Physics Department, Utah State University, Logan, UT, USA; Source Info: 2/1/2012 Part 1 Part 1, Vol. 40 Issue 2, p298; Subject Term: ELECTRON emission; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: PLASMA engines; Subject Term: ELECTRONS; Subject Term: SEMICONDUCTORS; Subject Term: POLYIMIDES; Subject Term: POLYCRYSTALLINE silicon; Subject Term: ALUMINUM oxide; Author-Supplied Keyword: Conductivity; Author-Supplied Keyword: Electric potential; Author-Supplied Keyword: Electron emission; Author-Supplied Keyword: Electron yield; Author-Supplied Keyword: insulator; Author-Supplied Keyword: Insulators; Author-Supplied Keyword: Materials; Author-Supplied Keyword: measurement techniques; Author-Supplied Keyword: Semiconductor device measurement; Author-Supplied Keyword: spacecraft charging; Author-Supplied Keyword: Surface charging; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TPS.2011.2178251 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73616347&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Letcher, Todd AU - M.-H. H. Shen AU - Scott-Emuakpor, Onome AU - George, Tommy AU - Cross, Charles T1 - Strain Rate and Loading Waveform Effects on an Energy-Based Fatigue Life Prediction for AL6061-T6. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2012/02// VL - 136 IS - 2 M3 - Article SP - 1 EP - 6 SN - 07424795 AB - The energy-based firing method is based on the theory that the cumulative energy in all hysteresis loops of a specimens' lifetime is equal to the energy in a monotonic tension test. Based on this theory, fatigue life can be calculated by dividing monotonic strain energy by a hysteresis energy model, which is a function of stress amplitude. Recent studies have focused on developing this method for a sine wave loading pattern--a variable strain rate. In order to remove the effects of a variable strain rate throughout the fatigue cycle, a constant strain rate triangle wave loading pattern was tested. The testing was conducted at various frequencies to evaluate the effects of multiple constant strain rates. Hysteresis loops created with sine wave loading and triangle loading were compared. The effects of variable and constant strain rate loading patterns on hysteresis loops throughout a specimens' fatigue life are examined. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE life (Materials science) KW - HYSTERESIS loop KW - STRAINS & stresses (Mechanics) KW - LOADS (Mechanics) KW - SINE waves N1 - Accession Number: 94401772; Letcher, Todd 1; Email Address: etcher.7@osu.edu M.-H. H. Shen 1; Email Address: shen.l@osu.edu Scott-Emuakpor, Onome 2 George, Tommy 2 Cross, Charles 2; Affiliation: 1: Mechanical and Aerospace Engineering Department, Building 148,201 W. 19th Ave., Ohio State University, Columbus, OH 43210 2: Turbine Engine Fatigue Facility, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433; Source Info: Feb2014, Vol. 136 Issue 2, p1; Subject Term: FATIGUE life (Materials science); Subject Term: HYSTERESIS loop; Subject Term: STRAINS & stresses (Mechanics); Subject Term: LOADS (Mechanics); Subject Term: SINE waves; Number of Pages: 6p; Document Type: Article L3 - 10.1115/1.4025497 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94401772&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dickinson, B.T. AU - Singler, J.R. AU - Batten, B.A. T1 - Mathematical modeling and simulation of biologically inspired hair receptor arrays in laminar unsteady flow separation JO - Journal of Fluids & Structures JF - Journal of Fluids & Structures Y1 - 2012/02// VL - 29 M3 - Article SP - 1 EP - 17 SN - 08899746 AB - Abstract: Bats possess arrays of distributed flow-sensitive hair-like mechanoreceptors on their dorsal and ventral wing surfaces. Bat wing hair receptors are known to play a significant role in flight maneuverability and are directionally most sensitive to reversed flow over the wing. In this work, we consider the mechanics of flexible hair-like structures for the time accurate detection and visualization of hydrodynamic images associated with unsteady near surface flow phenomena. A nonlinear viscoelastic model of a hair-like structure coupled to an unsteady nonuniform flow is proposed. Writing the hair model in nondimensional form, we identify five dimensionless groups that govern hair behavior. An order of magnitude analysis of the physical forces involved in the fluid–structure hair response is performed. Through the choice of hair material properties, we show how a local measure of near surface flow velocity may be obtained from hair tip displacement and resultant moment. When hair structures are placed into an array, time and space accurate hydrodynamic images may be obtained. We illustrate the imaging of reversed flow that occurs during a laminar unsteady flow separation with an array of hair-like structures. [Copyright &y& Elsevier] AB - Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL models KW - SIMULATION methods & models KW - DISTRIBUTION (Probability theory) KW - MECHANORECEPTORS KW - HYDRODYNAMICS KW - FLUID mechanics KW - Bats KW - Cilia KW - Hair cell KW - Micro air vehicles KW - Microcantilevers KW - Micropillars N1 - Accession Number: 71867908; Dickinson, B.T. 1; Email Address: btdickinson@lifetime.oregonstate.edu Singler, J.R. 2; Email Address: singlerj@mst.edu Batten, B.A. 3; Email Address: bbatten@engr.orst.edu; Affiliation: 1: Munitions Directorate, Air Force Research Laboratory, 101 W Eglin Blvd, Ste 213 Eglin AFB, FL 32542, USA 2: Department of Mathematics and Statistics, Missouri University of Science and Technology, 400 W 12th St, Rolla, MO 65409, USA 3: School of Mechanical, Industrial, and Manufacturing Engineering, Oregon State University, 204 Rogers Hall, Corvallis, OR 97331, USA; Source Info: Feb2012, Vol. 29, p1; Subject Term: MATHEMATICAL models; Subject Term: SIMULATION methods & models; Subject Term: DISTRIBUTION (Probability theory); Subject Term: MECHANORECEPTORS; Subject Term: HYDRODYNAMICS; Subject Term: FLUID mechanics; Author-Supplied Keyword: Bats; Author-Supplied Keyword: Cilia; Author-Supplied Keyword: Hair cell; Author-Supplied Keyword: Micro air vehicles; Author-Supplied Keyword: Microcantilevers; Author-Supplied Keyword: Micropillars; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.jfluidstructs.2011.12.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71867908&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Choi, Hyun-Jung AU - Kang, Ji-Ye AU - Jeon, In-Yup AU - Eo, Soo-Mi AU - Tan, Loon-Seng AU - Baek, Jong-Beom T1 - Immobilization of platinum nanoparticles on 3,4-diaminobenzoyl-functionalized multi-walled carbon nanotube and its electrocatalytic activity. JO - Journal of Nanoparticle Research JF - Journal of Nanoparticle Research Y1 - 2012/02// VL - 14 IS - 2 M3 - Article SP - 1 EP - 11 SN - 13880764 AB - Multi-walled carbon nanotubes (MWCNTs) are functionalized at the sp C-H defect sites with 3,4-diaminobenzoic acid by a 'direct' Friedel-Crafts acylation reaction in a mild polyphosphoric acid/phosphorous pentoxide medium. Owing to enhanced surface polarity, the resulting 3,4-diaminobenzoyl-functionalized MWCNTs (DAB-MWCNT) are highly dispersible in polar solvents, such as ethanol, N-methyl-2-pyrrolidone, and methanesulfonic acid. The absorption and emission properties of DAB-MWCNT in solution state are qualitatively shown to be sensitive to the pH in the environment. The DAB-MWCNT is used as a stable platform on which to deposit platinum nanoparticles (PNP). The PNP/DAB-MWCNT hybrid displays high electrocatalytic activity with good electrochemical stability for an oxygen reduction reaction under an alkaline condition. Graphical Abstract: Multi-walled carbon nanotubes (MWCNTs) were functionalized with 3,4-diaminobenzoic acid to produce 3,4-diaminobenzoyl-functionalized MWCNT (DAB-MWCNT). Platinum nanoparticles (PNP) were deposited to DAB-MWCNT. The resulting PNP/DAB-MWCNT hybrid displayed high electrocatalytic activity.[Figure not available: see fulltext.] [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nanoparticle Research is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - PLATINUM KW - BENZOYL compounds KW - MULTIWALLED carbon nanotubes KW - ELECTROCATALYSIS KW - ACYLATION KW - FRIEDEL-Crafts reaction KW - POLYPHOSPHORIC acid KW - Electrocatalytic activity KW - Functionalization KW - Multi-walled carbon nanotubes KW - Platinum nanoparticles N1 - Accession Number: 71816164; Choi, Hyun-Jung 1 Kang, Ji-Ye 1 Jeon, In-Yup 1 Eo, Soo-Mi 1 Tan, Loon-Seng 2 Baek, Jong-Beom 1; Email Address: jbbaek@unist.ac.kr; Affiliation: 1: Interdisciplinary School of Green Energy/Institute of Advanced Materials and Devices, Ulsan National Institute of Science and Technology, Ulsan 689-798 South Korea 2: Nanostructured and Biological Materials Branch (AFRL/RXBN), Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Dayton 45433 USA; Source Info: Feb2012, Vol. 14 Issue 2, p1; Subject Term: NANOPARTICLES; Subject Term: PLATINUM; Subject Term: BENZOYL compounds; Subject Term: MULTIWALLED carbon nanotubes; Subject Term: ELECTROCATALYSIS; Subject Term: ACYLATION; Subject Term: FRIEDEL-Crafts reaction; Subject Term: POLYPHOSPHORIC acid; Author-Supplied Keyword: Electrocatalytic activity; Author-Supplied Keyword: Functionalization; Author-Supplied Keyword: Multi-walled carbon nanotubes; Author-Supplied Keyword: Platinum nanoparticles; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 11p; Illustrations: 2 Black and White Photographs, 1 Diagram, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1007/s11051-011-0704-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71816164&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, Jianzhong AU - Shiyanov, Pavel AU - Schlager, John AU - Green, Kari T1 - A Pseudo MS Approach for Identification of Disulfide-Bonded Proteins: Uncommon Product Ions and Database Search. JO - Journal of the American Society for Mass Spectrometry JF - Journal of the American Society for Mass Spectrometry Y1 - 2012/02// VL - 23 IS - 2 M3 - Article SP - 225 EP - 243 SN - 10440305 AB - It has previously been reported that disulfide and backbone bonds of native intact proteins can be concurrently cleaved using electrospray ionization (ESI) and collision-induced dissociation (CID) tandem mass spectrometry (MS/MS). However, the cleavages of disulfide bonds result in different cysteine modifications in product ions, making it difficult to identify the disulfide-bonded proteins via database search. To solve this identification problem, we have developed a pseudo MS approach by combining nozzle-skimmer dissociation (NSD) and CID on a quadrupole time-of-flight (Q-TOF) mass spectrometer using chicken lysozyme as a model. Although many of the product ions were similar to those typically seen in MS/MS spectra of enzymatically derived peptides, additional uncommon product ions were detected including c ions (the i residue being aspartic acid, arginine, lysine and dehydroalanine) as well as those from a scrambled sequence. The formation of these uncommon types of product ions, likely caused by the lack of mobile protons, were proposed to involve bond rearrangements via a six-membered ring transition state and/or salt bridge(s). A search of 20 pseudo MS spectra against the Gallus gallus (chicken) database using Batch-Tag, a program originally designed for bottom up MS/MS analysis, identified chicken lysozyme as the only hit with the expectation values less than 0.02 for 12 of the spectra. The pseudo MS approach may help to identify disulfide-bonded proteins and determine the associated post-translational modifications (PTMs); the confidence in the identification may be improved by incorporating the fragmentation characteristics into currently available search programs. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Society for Mass Spectrometry is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTEINS KW - DISULFIDES KW - DATABASE searching KW - BIOMOLECULES KW - MASS spectrometry KW - Arginine residue KW - Aspartic acid residue KW - b+H2O ion KW - Bond rearrangement KW - c ion KW - Collision-induced dissociation KW - Cysteine residue KW - d ion KW - Database search KW - Disulfide bond cleavage KW - Electrospray ionization KW - HN=C=NH KW - Intact protein KW - Lysine residue KW - Lysozyme KW - Mobile proton KW - MS/MS KW - MS3 KW - Neutral loss KW - Nozzle-skimmer dissociation KW - Oxazolone structure KW - ProteinProspector KW - Quadrupole time-of-flight KW - Salt bridge KW - Sequence scrambling KW - six-membered ring KW - Sodiated ion KW - Top-down KW - Uncommon product ions N1 - Accession Number: 84124428; Chen, Jianzhong; Email Address: jianzhongc@yahoo.com Shiyanov, Pavel 1 Schlager, John 1 Green, Kari 2; Affiliation: 1: Applied Biotechnology Branch, Air Force Research Laboratory, Dayton 45433 USA 2: Mass Spectrometry and Proteomics Facility, The Ohio State University, Columbus 43210 USA; Source Info: Feb2012, Vol. 23 Issue 2, p225; Subject Term: PROTEINS; Subject Term: DISULFIDES; Subject Term: DATABASE searching; Subject Term: BIOMOLECULES; Subject Term: MASS spectrometry; Author-Supplied Keyword: Arginine residue; Author-Supplied Keyword: Aspartic acid residue; Author-Supplied Keyword: b+H2O ion; Author-Supplied Keyword: Bond rearrangement; Author-Supplied Keyword: c ion; Author-Supplied Keyword: Collision-induced dissociation; Author-Supplied Keyword: Cysteine residue; Author-Supplied Keyword: d ion; Author-Supplied Keyword: Database search; Author-Supplied Keyword: Disulfide bond cleavage; Author-Supplied Keyword: Electrospray ionization; Author-Supplied Keyword: HN=C=NH; Author-Supplied Keyword: Intact protein; Author-Supplied Keyword: Lysine residue; Author-Supplied Keyword: Lysozyme; Author-Supplied Keyword: Mobile proton; Author-Supplied Keyword: MS/MS; Author-Supplied Keyword: MS3; Author-Supplied Keyword: Neutral loss; Author-Supplied Keyword: Nozzle-skimmer dissociation; Author-Supplied Keyword: Oxazolone structure; Author-Supplied Keyword: ProteinProspector; Author-Supplied Keyword: Quadrupole time-of-flight; Author-Supplied Keyword: Salt bridge; Author-Supplied Keyword: Sequence scrambling; Author-Supplied Keyword: six-membered ring; Author-Supplied Keyword: Sodiated ion; Author-Supplied Keyword: Top-down; Author-Supplied Keyword: Uncommon product ions; Number of Pages: 19p; Document Type: Article L3 - 10.1007/s13361-011-0294-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84124428&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dick, Andrew J. AU - Phan, Quan M. AU - Foley, Jason R. AU - Spanos, Pol D. T1 - Calculating scaling function coefficients from system response data for new discrete wavelet families JO - Mechanical Systems & Signal Processing JF - Mechanical Systems & Signal Processing Y1 - 2012/02// VL - 27 M3 - Article SP - 362 EP - 369 SN - 08883270 AB - Abstract: In this paper, a formula derived from the wavelet dilation equation is presented as a means to calculate scaling function coefficient values for arbitrary waveforms. The performance of this formula is assessed by analyzing the scaling functions of multiple Daubechies wavelets. With the goal of developing new discrete wavelet families that possess the characteristics of a specific system, the formula is applied to analytical and experimental response data. The relationship between the number of coefficients and their ability to successfully capture the features of the signal is studied. Further, a technique is developed for determining the requisite number of coefficients when applying the formula. This formula may serve as the foundation for the development of new families of discrete wavelets which can be based on the nominal characteristics of a given system for use in signal processing and model discretization applications. [Copyright &y& Elsevier] AB - Copyright of Mechanical Systems & Signal Processing is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVELETS (Mathematics) KW - SIGNAL processing KW - DISCRETE systems KW - DATA analysis KW - MATHEMATICAL formulas KW - MATHEMATICAL models KW - Discrete wavelets KW - Impulse response KW - Signal analysis N1 - Accession Number: 67517780; Dick, Andrew J. 1; Email Address: andrew.j.dick@rice.edu Phan, Quan M. 1 Foley, Jason R. 2 Spanos, Pol D. 1; Affiliation: 1: Department of Mechanical Engineering and Materials Science, Rice University, Houston, Texas, United States 2: Fuzes Branch, Munitions Directorate, Air Force Research Laboratory, Eglin AFB, Florida, United States; Source Info: Feb2012, Vol. 27, p362; Subject Term: WAVELETS (Mathematics); Subject Term: SIGNAL processing; Subject Term: DISCRETE systems; Subject Term: DATA analysis; Subject Term: MATHEMATICAL formulas; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: Discrete wavelets; Author-Supplied Keyword: Impulse response; Author-Supplied Keyword: Signal analysis; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.ymssp.2011.09.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67517780&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Sukesh AU - Moeller, Jaimee AU - Gord, James R. T1 - Book review JO - Optics & Lasers in Engineering JF - Optics & Lasers in Engineering Y1 - 2012/02// VL - 50 IS - 2 M3 - Book Review SP - 105 EP - 106 SN - 01438166 N1 - Accession Number: 67138998; Roy, Sukesh 1; Email Address: sroy@woh.rr.com Moeller, Jaimee 1 Gord, James R. 2; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, OH 45431, USA 2: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Feb2012, Vol. 50 Issue 2, p105; Number of Pages: 2p; Document Type: Book Review L3 - 10.1016/j.optlaseng.2011.08.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67138998&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mertelj, Alenka AU - Cmok, Luka AU - Ĉopiĉ, Martin AU - Cook, Gary AU - Evans, Dean R. T1 - Critical behavior of director fluctuations in suspensions of ferroelectric nanoparticles in liquid crystals at the nematic to smectic-A phase transition. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2012/02// VL - 85 IS - 2-1 M3 - Article SP - 1 EP - 7 SN - 15393755 AB - By dynamic light scattering we studied the temperature dependence of scattered intensities and relaxation rates for pure twist and pure bend modes in a colloidal system of BaTi03 single domain nanoparticles and liquid crystal octylcyanobiphenyl (8CB) close to the nematic to smectic-A phase transition. From the experiments we obtained the critical exponents for the smectic correlation lengths, which in suspensions differ from the values for pure 8CB. The phase transition temperatures from isotropic to nematic phase (TNI) and from nematic to smectic-A phase (TNA) are both affected by the presence of the particles in two ways. The electric field around the ferroelectric particles increases the transition temperatures, whereas the disorder and probably also the excess of the surfactant cause a decrease of the transition temperatures compared to pure 8CB. The net effect is lower (TNI) and almost unchanged (TNA) in suspensions. After prolonged exposure to the external field the ferroelectric particles irreversibly aggregate, which results in the decrease of the internal electric field and, consequently, in the decrease of both transition temperatures. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUCTUATIONS (Physics) KW - FERROELECTRICITY KW - NANOPARTICLES KW - NEMATIC liquid crystals KW - PHASE transformations (Physics) KW - LIGHT -- Scattering KW - TEMPERATURE effect N1 - Accession Number: 74084534; Mertelj, Alenka 1,2 Cmok, Luka 1 Ĉopiĉ, Martin 1,2 Cook, Gary 3,4 Evans, Dean R. 3; Affiliation: 1: J. Stefan Institute, Jamova cesta 39, SI-1001 Ljubljana, Slovenia 2: Department of Physics, University of Ljubljana, SI-1000 Ljubljana, Slovenia 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 4: Azimuth Corporation, 4134 Linden Avenue, Dayton, Ohio 45433, USA; Source Info: Feb2012, Vol. 85 Issue 2-1, p1; Subject Term: FLUCTUATIONS (Physics); Subject Term: FERROELECTRICITY; Subject Term: NANOPARTICLES; Subject Term: NEMATIC liquid crystals; Subject Term: PHASE transformations (Physics); Subject Term: LIGHT -- Scattering; Subject Term: TEMPERATURE effect; Number of Pages: 7p; Document Type: Article L3 - 10.1103/PhysRevE.85.021705 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74084534&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adams, S. F. AU - Bogdanov, E. A. AU - Demidov, V. I. AU - Koepke, M. E. AU - Kudryavtsev, A. A. AU - Williamson, J. M. T1 - Metastable atom and electron density diagnostic in the initial stage of a pulsed discharge in Ar and other rare gases by emission spectroscopy. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2012/02// VL - 19 IS - 2 M3 - Article SP - 023510 PB - American Institute of Physics SN - 1070664X AB - Temporal measurements of the emission intensities of the Ar 419.8 and 420.1 nm spectral lines combined with Ar plasma modeling were used to examine the metastable atom and electron density behavior in the initial stage of a pulsed dc discharge. The emission intensity measurements of these spectral lines near the start of a pulsed dc discharge in Ar demonstrated a sharp growth of metastable atom and electron densities which was dependent on the applied reduced electric fields. For lower electric fields, the sharp growth of metastable atom density started earlier than the sharp electron density growth. The reverse situation was observed for larger electric fields. This presents the possibility for controlling plasma properties which may be useful for technological applications. Similar measurements with spectral lines of corresponding transitions in other rare gases are examined. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMISSION spectroscopy KW - ELECTRON distribution KW - GLOW discharges KW - ARGON KW - NOBLE gases KW - ELECTRIC fields KW - PLASMA (Ionized gases) KW - RADIATIVE transitions N1 - Accession Number: 72106589; Adams, S. F. 1 Bogdanov, E. A. 2 Demidov, V. I. 3 Koepke, M. E. 3 Kudryavtsev, A. A. 2 Williamson, J. M. 4; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 2: St. Petersburg State University, St. Petersburg, 3: West Virginia University, Morgantown, West Virginia 26506, 4: UES, Inc., 4401 Dayton-Xenia Rd., Dayton, Ohio 45432,; Source Info: Feb2012, Vol. 19 Issue 2, p023510; Subject Term: EMISSION spectroscopy; Subject Term: ELECTRON distribution; Subject Term: GLOW discharges; Subject Term: ARGON; Subject Term: NOBLE gases; Subject Term: ELECTRIC fields; Subject Term: PLASMA (Ionized gases); Subject Term: RADIATIVE transitions; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 7p; Illustrations: 1 Diagram, 13 Graphs; Document Type: Article L3 - 10.1063/1.3686142 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=72106589&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Toussaint, W. AU - Henney, C. AU - Harvey, J. T1 - Stokes Profile Compression Applied to VSM Data. JO - Solar Physics JF - Solar Physics Y1 - 2012/02// VL - 276 IS - 1/2 M3 - Article SP - 415 EP - 422 PB - Springer Science & Business Media B.V. SN - 00380938 AB - The practical details of applying the Expansion in Hermite Functions (EHF) method to compression of full-disk full-Stokes solar spectroscopic data from the SOLIS/VSM instrument are discussed in this paper. The algorithm developed and discussed here preserves the 630.15 and 630.25 nm Fe i lines, along with the local continuum and telluric lines. This compression greatly reduces the amount of space required to store these data sets while maintaining the quality of the data, allowing these observations to be archived and made publicly available with limited bandwidth. Applying EHF to the full-Stokes profiles and saving the coefficient files with Rice compression reduces the disk space required to store these observations by a factor of 20, while maintaining the quality of the data and with a total compression time only 35% slower than the standard gzip (GNU zip) compression. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR magnetic fields KW - OPTICAL polarization KW - SOLAR photosphere KW - MAGNETOMETERS KW - BANDWIDTHS KW - DATA compression (Telecommunication) KW - SUN -- Observations KW - SUN KW - Instrumentation and data management KW - Magnetic fields, photosphere KW - Polarization, optical KW - Spectral line, intensity and diagnostics N1 - Accession Number: 70383326; Toussaint, W. 1; Email Address: alext@noao.edu Henney, C. 2 Harvey, J. 1; Email Address: jharvey@noao.edu; Affiliation: 1: National Solar Observatory, Tucson USA 2: Air Force Research Laboratory, Kirtland AFB Albuquerque USA; Source Info: Feb2012, Vol. 276 Issue 1/2, p415; Subject Term: SOLAR magnetic fields; Subject Term: OPTICAL polarization; Subject Term: SOLAR photosphere; Subject Term: MAGNETOMETERS; Subject Term: BANDWIDTHS; Subject Term: DATA compression (Telecommunication); Subject Term: SUN -- Observations; Subject Term: SUN; Author-Supplied Keyword: Instrumentation and data management; Author-Supplied Keyword: Magnetic fields, photosphere; Author-Supplied Keyword: Polarization, optical; Author-Supplied Keyword: Spectral line, intensity and diagnostics; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 8p; Illustrations: 1 Chart, 1 Graph; Document Type: Article L3 - 10.1007/s11207-011-9892-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70383326&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kota, Krishna AU - Chow, Louis AU - Leland, Quinn T1 - Laminar film condensation driven latent thermal energy storage in rectangular containers JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2012/01/31/ VL - 55 IS - 4 M3 - Article SP - 1208 EP - 1217 SN - 00179310 AB - Abstract: This paper focuses on numerically analyzing the thermal transport phenomena in the transient conjugate problem of melting and laminar film condensation. The key focus is to identify an optimum container aspect ratio/shape and conditions for which the heat storage time and the storage capacity are minimum and maximum respectively. Since most solid–liquid phase change materials (PCMs) suffer from poor thermal conductivities, the major resistance to heat transfer comes from PCM. Hence, high thermal conductivity, low-cost metal foam is suggested for use along with PCM to minimize this resistance. The conjugate transient problem of film condensation driven solid–liquid phase change of PCM impregnated inside porous metal foam is numerically analyzed. An effective heat capacity formulation is employed for modeling the transient PCM phase change in porous foam and is solved using finite element method. It is coupled with laminar film condensation on the outside of the storage container. The model is then used for selecting the best aspect ratio for thermal energy storage (TES) containers that enables to store comparatively the maximum heat. The results of the developed model showed that the major resistance to heat transfer and hence efficient thermal energy storage depends strongly on the aspect ratio of the PCM storage containers. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT storage KW - HEATS of vaporization KW - LAMINAR flow KW - FOAMED materials KW - ASPECT ratio (Images) KW - HEAT transfer KW - Film condensation KW - Low temperature waste heat recovery KW - Melting KW - Phase change material KW - Porous foam KW - Thermal energy storage N1 - Accession Number: 69744365; Kota, Krishna 1; Email Address: Krishna.Kota@alcatel-lucent.com Chow, Louis 2; Email Address: Louis.Chow@ucf.edu Leland, Quinn 3; Email Address: Quinn.Leland@wpafb.af.mil; Affiliation: 1: The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405, USA 2: Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, FL 32816-2450, USA 3: Energy/Power/Thermal Division, Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: Jan2012, Vol. 55 Issue 4, p1208; Subject Term: HEAT storage; Subject Term: HEATS of vaporization; Subject Term: LAMINAR flow; Subject Term: FOAMED materials; Subject Term: ASPECT ratio (Images); Subject Term: HEAT transfer; Author-Supplied Keyword: Film condensation; Author-Supplied Keyword: Low temperature waste heat recovery; Author-Supplied Keyword: Melting; Author-Supplied Keyword: Phase change material; Author-Supplied Keyword: Porous foam; Author-Supplied Keyword: Thermal energy storage; NAICS/Industry Codes: 326150 Urethane and Other Foam Product (except Polystyrene) Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2011.09.036 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69744365&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buchwald, Walter R. AU - Cleary, Justin W. AU - Hendrickson, Joshua T1 - Surface depletion mediated control of inter-sub-band absorption in GaAs/AlAs semiconductor quantum well systems. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2012/01/30/ VL - 100 IS - 5 M3 - Article SP - 051110 PB - American Institute of Physics SN - 00036951 AB - The modification of quantum well inter-sub-band absorption properties due to surface depletion induced band bending is reported. Fourier transform infrared spectroscopy measurements of a GaAs/AlAs multiple quantum well system reveal a reduction in the characteristic absorption resonance in correlation with wet chemical etching. High resolution transmission electron microscopy confirms the presence of the quantum wells after etching, suggesting the quantum wells are positioned within the surface depletion region of the structure. This method of inter-sub-band absorption modification could be used for the formation of quantum dots from a quantum well system with the precise, deterministic control of their location. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM wells KW - GALLIUM arsenide semiconductors KW - ALUMINUM arsenide KW - TRANSMISSION electron microscopy KW - QUANTUM dots KW - MAGNETIC resonance N1 - Accession Number: 71111471; Buchwald, Walter R. 1 Cleary, Justin W. 2 Hendrickson, Joshua 2; Affiliation: 1: Solid State Scientific Corporation, Nashua, New Hampshire 03060, USA and Physics Department, University of Central Florida, Orlando, Florida 32816, 2: Air Force Research Laboratory, Sensors Directorate, Wright Paterson AFB, Ohio 45433,; Source Info: 1/30/2012, Vol. 100 Issue 5, p051110; Subject Term: QUANTUM wells; Subject Term: GALLIUM arsenide semiconductors; Subject Term: ALUMINUM arsenide; Subject Term: TRANSMISSION electron microscopy; Subject Term: QUANTUM dots; Subject Term: MAGNETIC resonance; Number of Pages: 3p; Illustrations: 1 Black and White Photograph, 3 Graphs; Document Type: Article L3 - 10.1063/1.3680232 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71111471&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kuznetsov, A.V. AU - Shaysultanov, D.G. AU - Stepanov, N.D. AU - Salishchev, G.A. AU - Senkov, O.N. T1 - Tensile properties of an AlCrCuNiFeCo high-entropy alloy in as-cast and wrought conditions JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2012/01/30/ VL - 533 M3 - Article SP - 107 EP - 118 SN - 09215093 AB - Abstract: Extensive multistep forging at 950°C was applied to the cast AlCuCrFeNiCo high-entropy alloy to transform the cast coarse dendritic structure into a fine equiaxed duplex structure consisting of the mixture of BCC and FCC phases, with the average grain/particle size of ∼1.5±0.9μm. Tensile properties of the alloy in the as-cast and forged conditions were determined in the temperature range of 20–1000°C. The hot forged alloy was stronger and more ductile during testing at room temperature, than the as-cast alloy. The yield stress (YS), ultimate tensile strength (UTS), and tensile ductility (δ) of the forged condition were 1040MPa, 1170MPa, and 1%, respectively, against 790MPa, 790MPa and 0.2% for the as-cast condition. In both conditions, the alloy showed brittle to ductile transition (BDT), with a noticeable increase in the tensile ductility within a narrow temperature range. In the as-cast condition, this transition occurred between 700 and 800°C, while in the forged condition, it was observed between 600 and 700°C. With an increase in the testing temperature above the BDT, a continuous decrease in tensile flow stress and an increase in tensile ductility were observed. In the temperature range of 800–1000°C, the forged alloy showed superplastic behavior. The tensile elongation was above 400% and reached 860% at 1000°C. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IRON alloys KW - ENTROPY KW - WROUGHT iron KW - METALS -- Microbiology KW - METALS -- Mechanical properties KW - STRENGTH of materials KW - STRAINS & stresses (Mechanics) KW - Electron microscopy KW - Grain refinement KW - High entropy alloy KW - Mechanical characterization KW - Plasticity KW - Thermomechanical processing N1 - Accession Number: 70153038; Kuznetsov, A.V. 1; Email Address: ak72@mail.ru Shaysultanov, D.G. 1 Stepanov, N.D. 1 Salishchev, G.A. 1 Senkov, O.N. 2,3; Affiliation: 1: Laboratory of Bulk Nanostructured Materials, Belgorod State University, Pobeda 85, Belgorod 308015, Russia 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 3: UES, Inc., 4401 Dayton-Xenia Rd., Dayton, OH 45432, USA; Source Info: Jan2012, Vol. 533, p107; Subject Term: IRON alloys; Subject Term: ENTROPY; Subject Term: WROUGHT iron; Subject Term: METALS -- Microbiology; Subject Term: METALS -- Mechanical properties; Subject Term: STRENGTH of materials; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: Electron microscopy; Author-Supplied Keyword: Grain refinement; Author-Supplied Keyword: High entropy alloy; Author-Supplied Keyword: Mechanical characterization; Author-Supplied Keyword: Plasticity; Author-Supplied Keyword: Thermomechanical processing; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 423510 Metal Service Centers and Other Metal Merchant Wholesalers; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 238190 Other Foundation, Structure, and Building Exterior Contractors; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.msea.2011.11.045 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70153038&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Polizos, G. AU - Tuncer, E. AU - Agapov, A.L. AU - Stevens, D. AU - Sokolov, A.P. AU - Kidder, M.K. AU - Jacobs, J.D. AU - Koerner, H. AU - Vaia, R.A. AU - More, K.L. AU - Sauers, I. T1 - Effect of polymer–nanoparticle interactions on the glass transition dynamics and the conductivity mechanism in polyurethane titanium dioxide nanocomposites JO - Polymer JF - Polymer Y1 - 2012/01/24/ VL - 53 IS - 2 M3 - Article SP - 595 EP - 603 SN - 00323861 AB - Abstract: We report on the glass transition dynamics and the conductivity properties of a nanodielectric system composed of pre-synthesized TiO2 nanoparticles embedded in thermoplastic polyurethane. Increase of TiO2 loading results in enhanced segmental mobility of the composites and less steep temperature dependence, i.e., lower fragility index. The decrease in the fragility index and glass transition temperature is discussed based on the FTIR results. We observe different behavior of conductivity for temperatures above and below the glass transition temperature. At high temperatures the composites exhibit conductivity values more than 2 orders of magnitude higher than those in the pristine matrix. At the same time, at sub-T g temperatures composites are characterized by superior electrical insulation properties compared to pristine matrix material. Such drastic temperature dependence of the conductivity/insulating ability of the flexible and light-weight, low-T g composite material can be utilized in various applications including sensing and temperature switching materials. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOCOMPOSITE materials KW - GLASS transition temperature KW - ELECTRIC conductivity KW - POLYURETHANES KW - TITANIUM dioxide KW - THERMOPLASTIC composites KW - FOURIER transform infrared spectroscopy KW - Conductivity KW - Dynamics KW - Nanocomposites N1 - Accession Number: 70389857; Polizos, G. 1; Email Address: polyzosg@ornl.gov Tuncer, E. 1,2 Agapov, A.L. 1 Stevens, D. 1 Sokolov, A.P. 1 Kidder, M.K. 1 Jacobs, J.D. 3 Koerner, H. 3 Vaia, R.A. 3 More, K.L. 1 Sauers, I. 1; Affiliation: 1: Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, TN 37831, USA 2: Dielectrics & Electrophysics Lab, GE Global Research Center, Niskayuna, NY 12309, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Jan2012, Vol. 53 Issue 2, p595; Subject Term: NANOCOMPOSITE materials; Subject Term: GLASS transition temperature; Subject Term: ELECTRIC conductivity; Subject Term: POLYURETHANES; Subject Term: TITANIUM dioxide; Subject Term: THERMOPLASTIC composites; Subject Term: FOURIER transform infrared spectroscopy; Author-Supplied Keyword: Conductivity; Author-Supplied Keyword: Dynamics; Author-Supplied Keyword: Nanocomposites; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.polymer.2011.11.050 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70389857&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Luo, Hong AU - Segawa, Hidehiro AU - Visbal, Miguel R. T1 - An implicit discontinuous Galerkin method for the unsteady compressible Navier–Stokes equations JO - Computers & Fluids JF - Computers & Fluids Y1 - 2012/01/15/ VL - 53 M3 - Article SP - 133 EP - 144 SN - 00457930 AB - Abstract: A high-order implicit discontinuous Galerkin method is developed for the time-accurate solutions to the compressible Navier–Stokes equations. The spatial discretization is carried out using a high order discontinuous Galerkin method, where polynomial solutions are represented using a Taylor basis. A second order implicit method is applied for temporal discretization to the resulting ordinary differential equations. The resulting non-linear system of equations is solved at each time step using a pseudo-time marching approach. A newly developed fast, p-multigrid is then used to obtain the steady state solution to the pseudo-time system. The developed method is applied to compute a variety of unsteady subsonic viscous flow problems. The numerical results obtained indicate that the use of this implicit method leads to significant improvements in performance over its explicit counterpart, while without significant increase in memory requirements. [Copyright &y& Elsevier] AB - Copyright of Computers & Fluids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMPLICIT functions KW - DISCONTINUOUS functions KW - GALERKIN methods KW - UNSTEADY flow (Fluid dynamics) KW - COMPRESSIBILITY KW - NAVIER-Stokes equations KW - TAYLOR'S series KW - VISCOUS flow KW - DIFFERENTIAL equations KW - Compressible Navier–Stokes equations KW - Discontinuous Galerkin methods KW - Implicit methods N1 - Accession Number: 67382360; Luo, Hong 1; Email Address: hong_luo@ncsu.edu Segawa, Hidehiro 1 Visbal, Miguel R. 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, USA 2: Computational Sciences Branch, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Jan2012, Vol. 53, p133; Subject Term: IMPLICIT functions; Subject Term: DISCONTINUOUS functions; Subject Term: GALERKIN methods; Subject Term: UNSTEADY flow (Fluid dynamics); Subject Term: COMPRESSIBILITY; Subject Term: NAVIER-Stokes equations; Subject Term: TAYLOR'S series; Subject Term: VISCOUS flow; Subject Term: DIFFERENTIAL equations; Author-Supplied Keyword: Compressible Navier–Stokes equations; Author-Supplied Keyword: Discontinuous Galerkin methods; Author-Supplied Keyword: Implicit methods; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.compfluid.2011.10.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67382360&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Joshi, R. P. AU - Sridhara, V. AU - Jogai, B. AU - Shah, P. AU - del Rosario, R. D. T1 - Publisher's Note: 'Analysis of dislocation scattering on electron mobility in GaN high electron mobility transistors' [J. Appl. Phys. 93, 10046 (2003)]. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/01/15/ VL - 111 IS - 2 M3 - Correction notice SP - 029901 PB - American Institute of Physics SN - 00218979 AB - A correction to the article "Analysis of dislocation scattering on electron mobility in GaN high electron mobility transistors" that was published online on January 19, 2012 is presented. KW - AUTHORS N1 - Accession Number: 70849842; Joshi, R. P. 1 Sridhara, V. 1 Jogai, B. 2 Shah, P. 3 del Rosario, R. D. 3; Affiliation: 1: Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, Virginia 23529-0246, 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA and Semiconductor Research Center, Wright State University, Dayton, Ohio 45435, 3: U.S. Army Research Laboratory, Adelphi, Maryland 20783,; Source Info: Jan2012, Vol. 111 Issue 2, p029901; Subject Term: AUTHORS; NAICS/Industry Codes: 711513 Independent writers and authors; NAICS/Industry Codes: 711510 Independent Artists, Writers, and Performers; Number of Pages: 1p; Document Type: Correction notice L3 - 10.1063/1.3679426 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70849842&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ramezani, Hamidreza AU - Kottos, Tsampikos AU - Kovanis, Vassilios AU - Christodoulides, Demetrios N. T1 - Exceptional-point dynamics in photonic honeycomb lattices with PT symmetry. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2012/01/15/ VL - 85 IS - 1-B M3 - Article SP - 1 EP - 6 SN - 10502947 AB - We theoretically investigate the flow of electromagnetic waves in complex honeycomb photonic lattices with local PT symmetries. Such PT structure is introduced via a judicious arrangement of gain and loss across the honeycomb lattice, characterized by a gain and loss parameter y. We found a class of conical diffraction phenomena where the formed cone is brighter and travels along the lattice with a transverse speed proportional to J√&ggr;. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL lattices KW - HONEYCOMB structures KW - SYMMETRY (Physics) KW - QUANTUM theory KW - OPTICAL diffraction KW - PHOTONS N1 - Accession Number: 74023070; Ramezani, Hamidreza 1 Kottos, Tsampikos 1,2 Kovanis, Vassilios 3 Christodoulides, Demetrios N. 4; Affiliation: 1: Department of Physics, Wesleyan University, Middletown, Connecticut 06459, USA 2: MPI for Dynamics and Self-Organization, Bunsenstrafte 10, D-37073 Gottingen, Germany 3: Air Force Research Laboratory, Sensors Directorate, Wright Patterson Air Force Base, Ohio 45433, USA 4: College of Optics & Photonics-CREOL, University of Central Florida, Orlando, Florida 32816, USA; Source Info: Jan2012, Vol. 85 Issue 1-B, p1; Subject Term: OPTICAL lattices; Subject Term: HONEYCOMB structures; Subject Term: SYMMETRY (Physics); Subject Term: QUANTUM theory; Subject Term: OPTICAL diffraction; Subject Term: PHOTONS; Number of Pages: 6p; Document Type: Article L3 - 10.1103/PhysRevA.85.013818 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74023070&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Belletire, John L. AU - Schneider, Stefan AU - Wight, Brett A. AU - Strauss, Steven L. AU - Shackelford, Scott A. T1 - Pairing Heterocyclic Cations with closo-Icosahedral Borane and Carborane Anions, II: Benchtop Alternative Synthetic Methodologies for Binary Triazolium and Tetrazolium Salts with Significant Water Solubility. JO - Synthetic Communications JF - Synthetic Communications Y1 - 2012/01/15/ VL - 42 IS - 2 M3 - Article SP - 155 EP - 169 PB - Taylor & Francis Ltd SN - 00397911 AB - Two efficient processes for the synthesis of 12 relatively water-soluble binary triazolium and the first tetrazolium borane [B12H12] and carborane [CB11H12] salts by a one-step, open-air metathesis reaction have been developed. First, a combination of exhaustive trituration of the two solid reactant salts with refluxing anhydrous acetonitrile followed by flash filtration through a plug of silica gel afforded excellent recovery for a broad series of otherwise water-soluble heterocyclium salts. Second, an alternative aqueous metathesis, driven to completion by precipitation of silver halides, followed by removal of water, redissolution in acetonitrile, and filtration through a silica-gel plug, also yielded such heterocyclium borane and carborane salts. Mixed 1:1 dication heterocyclium borane salts were first synthesized using this second procedure, and one example showed melting-point depression behavior. [image omitted] [ABSTRACT FROM AUTHOR] AB - Copyright of Synthetic Communications is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HETEROCYCLIC compounds KW - CATIONS KW - CARBORANES KW - TETRAZOLIUM salts KW - SOLUBILITY KW - INORGANIC compounds -- Synthesis KW - ACETONITRILE KW - closo-Icosahedral borane dianions KW - closo-icosahedral carborane anions KW - exhaustive trituration KW - heterocyclium halides KW - mixed heterocyclium boranes KW - silver-halide-mediated metathesis N1 - Accession Number: 65456274; Belletire, John L. 1 Schneider, Stefan 2 Wight, Brett A. 1 Strauss, Steven L. 3 Shackelford, Scott A. 2; Affiliation: 1: ERC Incorporated, Air Force Research Laboratory, Edwards AFB, California, USA 2: Space and Missile Propulsion Directorate, AFRL/RZSP, Edwards AFB, California, USA 3: Department of Chemistry, Colorado State University, Fort Collins, Colorado, USA; Source Info: 2012, Vol. 42 Issue 2, p155; Subject Term: HETEROCYCLIC compounds; Subject Term: CATIONS; Subject Term: CARBORANES; Subject Term: TETRAZOLIUM salts; Subject Term: SOLUBILITY; Subject Term: INORGANIC compounds -- Synthesis; Subject Term: ACETONITRILE; Author-Supplied Keyword: closo-Icosahedral borane dianions; Author-Supplied Keyword: closo-icosahedral carborane anions; Author-Supplied Keyword: exhaustive trituration; Author-Supplied Keyword: heterocyclium halides; Author-Supplied Keyword: mixed heterocyclium boranes; Author-Supplied Keyword: silver-halide-mediated metathesis; Number of Pages: 15p; Illustrations: 8 Diagrams, 1 Chart; Document Type: Article L3 - 10.1080/00397911.2010.520543 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65456274&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cooper, Thomas M. AU - Krein, Douglas M. AU - Burke, Aaron R. AU - McLean, Daniel G. AU - Haley, Joy E. AU - Slagle, Jonathan AU - Monahan, Jennifer AU - Fratini, Albert T1 - Spectroscopic Structure--Property Relationships of a Series of Polyaromatic Platinum Acetylides. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2012/01/12/ VL - 116 IS - 1 M3 - Article SP - 139 EP - 149 SN - 10895639 AB - To develop a structure--spectroscopic property relationship in platinum acetylides having poly (aromatic hydrocarbon) ligands, we synthesized a series of chromophores with systematic variation in the number of fused aromatic rings (nFAR) and ligand topology (polyacene (L), polyphenanthrene (Z), or compact(C)). We measured ground-state absorption, fluorescence, and phosphorescence spectra. We also performed nanosecond and femtosecond transient absorption experiments. To extend the range of compounds in the structure--property relationship, we did DFT calculations on an expanded series of chromophores. Both the DFT results and experiments show that the S1 and T1 state energies are a function of both nFAR and the ligand topology. In the L chromophores, the S1 and T1 state energies decrease linearly with nFAR. In contrast, the S1 and T1 state energies of the Z chromophores oscillate around a fixed value with increasing nFAR. The C chromophores have behavior intermediate between the L and Z chromophores. A parallel series of calculations on the ligands shows the same behavior. The S1-Sn energy obtained from ultrafast time-resolved spectra has a linear variation in nFAR. The rate constant for nonradiative decay, knr was calculated from the S1 state lifetime and decreases with an increasing number of π electrons in the aromatic ring. The result is consistent with the spin--orbit coupling caused by the central platinum heavy atom decreasing with larger nFAR. The present work shows that the framework developed for the analysis of poly (aromatic hydrocarbon) properties is useful for the understanding of the corresponding platinum acetylide complexes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRUM analysis KW - AROMATIC compounds KW - CHROMOPHORES KW - PLATINUM KW - ACENES KW - PHENANTHRENE N1 - Accession Number: 71929549; Cooper, Thomas M. 1 Krein, Douglas M. 1,2 Burke, Aaron R. 1,2 McLean, Daniel G. 1,3 Haley, Joy E. 1 Slagle, Jonathan 1,3 Monahan, Jennifer 1,4 Fratini, Albert 5; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright--Patterson Air Force Base, Ohio 45433, United States 2: General Dynamics Information Technology, Dayton, Ohio 45431, United States 3: Science Applications International Corporation, Dayton, Ohio 45434, United States 4: SOCHE Student Research Program, Dayton, Ohio 45420, United States 5: Department of Chemistry, University of Dayton, Dayton, Ohio 45469, United States; Source Info: Jan2012, Vol. 116 Issue 1, p139; Subject Term: SPECTRUM analysis; Subject Term: AROMATIC compounds; Subject Term: CHROMOPHORES; Subject Term: PLATINUM; Subject Term: ACENES; Subject Term: PHENANTHRENE; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71929549&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Andrew J. Guenthner AU - Kevin R. Lamison AU - Vandana Vij AU - JosiahT. Reams AU - Gregory R. Yandek AU - Joseph M. Mabry T1 - New Insights into Structure–PropertyRelationships in Thermosetting Polymers from Studies of Cocured PolycyanurateNetworks. JO - Macromolecules JF - Macromolecules Y1 - 2012/01/10/ VL - 45 IS - 1 M3 - Article SP - 211 EP - 220 SN - 00249297 AB - Studies of the physical properties of the cocured networksformed from three similar dicyanate ester monomers revealed a numberof unexpected variations from simple linear mixing rules. These variationsshed light on important synergistic effects in cocured thermosettingnetworks and their possible causes. The monomers utilized were thedicyanate esters of Bisphenol A (BADCy) and Bisphenol E (LECy) andthe silicon-containing analogue of Bisphenol A (SiMCy). The most importantof the synergistic effects was a decrease of ∼25% in moistureuptake seen only in conetworks of LECy and SiMCy. For all other systems,a clear relationship between moisture uptake and the number densityof cyanurate rings was observed. This relationship generally appliesto many types of cyanate esters and gives an indication of the importanceof specific sites (as opposed to free volume alone) in moisture uptake.Numerous additional examples of nonlinear mixing relations were observedin the glass transition temperature, density, and thermochemical stabilityof fully cured networks. Interestingly, the most widespread deviationsfrom linear behavior were observed for conetworks of SiMCy and LECy,suggesting that factors such as the mismatch in network segment sizemay be more important than differences in flexibility or symmetryin driving significant physical interactions among conetwork components. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMER networks KW - MOLECULAR structure KW - THERMOSETTING plastics KW - CYANURIC acid KW - ESTERS KW - MONOMERS KW - BISPHENOL A KW - GLASS transition temperature N1 - Accession Number: 70371512; Andrew J. Guenthner 1 Kevin R. Lamison 1 Vandana Vij 1 JosiahT. Reams 1 Gregory R. Yandek 1 Joseph M. Mabry 1; Affiliation: 1: †PropulsionDirectorate, Air Force Research Laboratory, Edwards AFB, California 93524, United States; Source Info: Jan2012, Vol. 45 Issue 1, p211; Subject Term: POLYMER networks; Subject Term: MOLECULAR structure; Subject Term: THERMOSETTING plastics; Subject Term: CYANURIC acid; Subject Term: ESTERS; Subject Term: MONOMERS; Subject Term: BISPHENOL A; Subject Term: GLASS transition temperature; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70371512&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tchoul, Maxim N. AU - Dalton, Matthew AU - Tan, Loon-Seng AU - Dong, Hongchen AU - Hui, Chin Ming AU - Matyjaszewski, Krzysztof AU - Vaia, Richard A. T1 - Enhancing the fraction of grafted polystyrene on silica hybrid nanoparticles JO - Polymer JF - Polymer Y1 - 2012/01/05/ VL - 53 IS - 1 M3 - Article SP - 79 EP - 86 SN - 00323861 AB - Abstract: Polymer-grafted inorganic nanoparticles are being developed for a diverse array of applications, ranging from drug delivery to multifunctional composites. In many instances, performance of these core-shell hybrids is limited by relatively broad distributions of size and composition, as well as the presence of impurities, such as unattached polymer chains. Herein, further synthetic improvements, and associated characterization techniques, to enhance the fraction of the grafted polystyrene shell on silica hybrid nanoparticles are discussed. We found that during surface-initiated atom transfer radical polymerization (SI-ATRP) from the silica nanoparticles, thermal self-initiation of styrene produces unattached polymer chains. Size exclusion chromatography afforded a facile approach to quantify the mass of the unattached polymer, and provide a substantial refinement to estimates of chain graft density beyond traditionally-used approaches, such as thermogravimetry. This fraction of unattached polymer is still present even after post-polymerization work-up via precipitation and re-dissolution. Removal necessitates additional procedures, such as high speed centrifugation. Selection of a lower polymerization temperature, in concert with a more reactive Cu complex, significantly reduces the amount of unattached polystyrene impurity. The improved polymerization conditions and post-polymerization purification provide more refined polystyrene-grafted silica nanoparticles to clarify structure-property relationships of these core-shell hybrids. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYSTYRENE KW - NANOPARTICLES KW - DRUG delivery systems KW - SILICA KW - FREE radical reactions KW - CHROMATOGRAPHIC analysis KW - Hairy nanoparticles KW - Polymer nanocomposites KW - Surface-initiated atom transfer radical polymerization N1 - Accession Number: 70041346; Tchoul, Maxim N. 1 Dalton, Matthew 1,2 Tan, Loon-Seng 1 Dong, Hongchen 3 Hui, Chin Ming 3 Matyjaszewski, Krzysztof 3 Vaia, Richard A. 1; Email Address: richard.vaia@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, 2943 Hobson Way, Wright-Patterson AFB, OH 45433, USA 2: General Dynamics Information Technology, 5100 Springfield Pike, Dayton, OH 45431, USA 3: Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213, USA; Source Info: Jan2012, Vol. 53 Issue 1, p79; Subject Term: POLYSTYRENE; Subject Term: NANOPARTICLES; Subject Term: DRUG delivery systems; Subject Term: SILICA; Subject Term: FREE radical reactions; Subject Term: CHROMATOGRAPHIC analysis; Author-Supplied Keyword: Hairy nanoparticles; Author-Supplied Keyword: Polymer nanocomposites; Author-Supplied Keyword: Surface-initiated atom transfer radical polymerization; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 326140 Polystyrene Foam Product Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.polymer.2011.11.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70041346&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - ABST AU - Grooms, Joshua K. AU - Thompson, Garth J. AU - Schwarb, Hillary AU - Schumacher, Eric AU - Schmidt, Regina AU - Epstein, Charles AU - Keilholz, Shella D. T1 - Low-frequency EEG correlates of fMRI in the resting state. JO - BMC Neuroscience JF - BMC Neuroscience Y1 - 2012/01/02/2012 Supplement 1 VL - 13 IS - Suppl 1 M3 - Abstract SP - 1 EP - 2 PB - BioMed Central SN - 14712202 AB - An abstract of the article "Low-frequency EEG correlates of fMRI in the resting state," by Joshua K. Grooms, Garth J. Thompson, Hillary Schwarb, Eric Schumacher, Regina Schmidt, Charles Epstein, and Shella D. Keilholz is presented. KW - MAGNETIC resonance imaging KW - ELECTROENCEPHALOGRAPHY KW - ABSTRACTS N1 - Accession Number: 78421588; Grooms, Joshua K. 1; Email Address: josh.grooms@gatech.edu Thompson, Garth J. 1 Schwarb, Hillary 2 Schumacher, Eric 2 Schmidt, Regina 3 Epstein, Charles 4 Keilholz, Shella D. 1; Affiliation: 1: Biomedical Engineering, Emory University & Georgia Institute of Technology, Atlanta, GA 30306, USA. 2: School of Psychology, Georgia Institute of Technology, Atlanta, GA 30332, USA. 3: Air Force Research Laboratory, Wright- Patterson Air Force Base, OH 45433, USA. 4: Neurology, Emory University Hospital, Atlanta, GA 30322, USA.; Source Info: 2012 Supplement 1, Vol. 13 Issue Suppl 1, p1; Subject Term: MAGNETIC resonance imaging; Subject Term: ELECTROENCEPHALOGRAPHY; Subject Term: ABSTRACTS; NAICS/Industry Codes: 621512 Diagnostic Imaging Centers; Number of Pages: 2p; Illustrations: 1 Graph; Document Type: Abstract L3 - 10.1186/1471-2202-13-S1-P107 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78421588&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Parasuraman, Raja AU - Christensen, James AU - Grafton, Scott T1 - Neuroergonomics: The brain in action and at work JO - NeuroImage JF - NeuroImage Y1 - 2012/01/02/ VL - 59 IS - 1 M3 - Editorial SP - 1 EP - 3 SN - 10538119 N1 - Accession Number: 66672057; Parasuraman, Raja 1; Email Address: rparasur@gmu.edu Christensen, James 2 Grafton, Scott 3; Affiliation: 1: Arch Laboratory and Department of Psychology, George Mason University, Fairfax, VA 22030, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA 3: Department of Psychological and Brain Science, University of California, Santa Barbara, CA 93106, USA; Source Info: Jan2012, Vol. 59 Issue 1, p1; Number of Pages: 3p; Document Type: Editorial L3 - 10.1016/j.neuroimage.2011.08.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66672057&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Christensen, James C. AU - Estepp, Justin R. AU - Wilson, Glenn F. AU - Russell, Christopher A. T1 - The effects of day-to-day variability of physiological data on operator functional state classification JO - NeuroImage JF - NeuroImage Y1 - 2012/01/02/ VL - 59 IS - 1 M3 - Article SP - 57 EP - 63 SN - 10538119 AB - Abstract: The application of pattern classification techniques to physiological data has undergone rapid expansion. Tasks as varied as the diagnosis of disease from magnetic resonance images, brain–computer interfaces for the disabled, and the decoding of brain functioning based on electrical activity have been accomplished quite successfully with pattern classification. These classifiers have been further applied in complex cognitive tasks to improve performance, in one example as an input to adaptive automation. In order to produce generalizable results and facilitate the development of practical systems, these techniques should be stable across repeated sessions. This paper describes the application of three popular pattern classification techniques to EEG data obtained from asymptotically trained subjects performing a complex multitask across five days in one month. All three classifiers performed well above chance levels. The performance of all three was significantly negatively impacted by classifying across days; however two modifications are presented that substantially reduce misclassifications. The results demonstrate that with proper methods, pattern classification is stable enough across days and weeks to be a valid, useful approach. [Copyright &y& Elsevier] AB - Copyright of NeuroImage is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PATTERN recognition systems KW - BRAIN-computer interfaces KW - BRAIN diseases -- Diagnosis KW - BRAIN -- Physiology KW - BRAIN -- Magnetic resonance imaging KW - ELECTROENCEPHALOGRAPHY KW - BRAIN function localization KW - EEG KW - Interday variability KW - Pattern classification KW - Workload N1 - Accession Number: 66672063; Christensen, James C. 1; Email Address: james.christensen@wpafb.af.mil Estepp, Justin R. 1 Wilson, Glenn F. 2 Russell, Christopher A. 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 2: Physiometrex, Inc., Keizer, OR 97303, USA 3: Archinoetics, LLC, Honolulu, HI 96813, USA; Source Info: Jan2012, Vol. 59 Issue 1, p57; Subject Term: PATTERN recognition systems; Subject Term: BRAIN-computer interfaces; Subject Term: BRAIN diseases -- Diagnosis; Subject Term: BRAIN -- Physiology; Subject Term: BRAIN -- Magnetic resonance imaging; Subject Term: ELECTROENCEPHALOGRAPHY; Subject Term: BRAIN function localization; Author-Supplied Keyword: EEG; Author-Supplied Keyword: Interday variability; Author-Supplied Keyword: Pattern classification; Author-Supplied Keyword: Workload; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.neuroimage.2011.07.091 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66672063&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McKinley, R. Andy AU - Bridges, Nathaniel AU - Walters, Craig M. AU - Nelson, Jeremy T1 - Modulating the brain at work using noninvasive transcranial stimulation JO - NeuroImage JF - NeuroImage Y1 - 2012/01/02/ VL - 59 IS - 1 M3 - Article SP - 129 EP - 137 SN - 10538119 AB - Abstract: This paper proposes a shift in the way researchers currently view and use transcranial brain stimulation technologies. From a neuroscience perspective, the standard application of both transcranial magnetic stimulation (TMS) and transcranial direct current stimulation (tDCS) has been mainly to explore the function of various brain regions. These tools allow for noninvasive and painless modulation of cortical tissue. In the course of studying the function of an area, many studies often report enhanced performance of a task during or following the stimulation. However, little follow-up research is typically done to further explore these effects. Approaching this growing pool of cognitive neuroscience literature with a neuroergonomics mindset (i.e., studying the brain at work), the possibilities of using these stimulation techniques for more than simply investigating the function of cortical areas become evident. In this paper, we discuss how cognitive neuroscience brain stimulation studies may complement neuroergonomics research on human performance optimization. And, through this discussion, we hope to shift the mindset of viewing transcranial stimulation techniques as solely investigatory basic science tools or possible clinical therapeutic devices to viewing transcranial stimulation techniques as interventional tools to be incorporated in applied science research and systems for the augmentation and enhancement of human operator performance. [Copyright &y& Elsevier] AB - Copyright of NeuroImage is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSCRANIAL magnetic stimulation KW - BRAIN -- Physiology KW - PERFORMANCE evaluation KW - NEUROERGONOMICS KW - CLINICAL trials KW - COGNITIVE ability KW - HUMAN-computer interaction KW - Brain stimulation mechanism KW - Cognitive performance KW - Enhancement KW - Neuroergonomics KW - Noninvasive brain stimulation KW - tDCS KW - TMS KW - Transcranial direct current stimulation KW - Transcranial magnetic stimulation N1 - Accession Number: 66672070; McKinley, R. Andy 1; Email Address: andy.mckinley@wpafb.af.mil Bridges, Nathaniel 2 Walters, Craig M. 1 Nelson, Jeremy 3,4; Affiliation: 1: Air Force Research Laboratory, 2947 Fifth St., Bldg. 20840, Rm. 200.05, Wright-Patterson AFB, OH 45433, USA 2: Infoscitex Corporation, 4027 Colonel Glenn Highway, Suite 210, Dayton, OH 45431, USA 3: Tulane Neuroscience Program, Tulane University, 2007 Stern Hall, New Orleans, LA 70118, USA 4: Booz Allen Hamilton, 1900 Founders Dr., Suite 300, Dayton, OH 45420–4034, USA; Source Info: Jan2012, Vol. 59 Issue 1, p129; Subject Term: TRANSCRANIAL magnetic stimulation; Subject Term: BRAIN -- Physiology; Subject Term: PERFORMANCE evaluation; Subject Term: NEUROERGONOMICS; Subject Term: CLINICAL trials; Subject Term: COGNITIVE ability; Subject Term: HUMAN-computer interaction; Author-Supplied Keyword: Brain stimulation mechanism; Author-Supplied Keyword: Cognitive performance; Author-Supplied Keyword: Enhancement; Author-Supplied Keyword: Neuroergonomics; Author-Supplied Keyword: Noninvasive brain stimulation; Author-Supplied Keyword: tDCS; Author-Supplied Keyword: TMS; Author-Supplied Keyword: Transcranial direct current stimulation; Author-Supplied Keyword: Transcranial magnetic stimulation; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.neuroimage.2011.07.075 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66672070&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wellems, L. David AU - Huang, Danhong AU - Leskova, T.A. AU - Maradudin, A.A. T1 - Nanogroove array on thin metallic film as planar lens with tunable focusing JO - Physics Letters A JF - Physics Letters A Y1 - 2012/01/02/ VL - 376 IS - 3 M3 - Article SP - 216 EP - 220 SN - 03759601 AB - Abstract: Numerical results for the distributions of light transmitted through metallic planar lenses composed of symmetric nanogroove arrays on the surfaces of a gold film are presented and explained. Both the near- and far-field distributions of the intensity of light transmitted are calculated by using a Greenʼs function formalism. Results for an optimal transverse focus based on a quadratic variation of groove width are obtained. Meanwhile, a significant dependence of the focal length on the wavelength of light incident from the air side through the gold film into a dielectric substrate is found for this detector configuration. [Copyright &y& Elsevier] AB - Copyright of Physics Letters A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC films KW - NUMERICAL analysis KW - LENSES KW - SYMMETRY (Physics) KW - GREEN'S functions KW - WAVELENGTHS KW - DIELECTRICS N1 - Accession Number: 67623273; Wellems, L. David 1 Huang, Danhong 1; Email Address: danhong.huang@kirtland.af.mil Leskova, T.A. 2 Maradudin, A.A. 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, NM 87117, USA 2: Department of Physics and Astronomy and Institute for Surface and Interface Science, University of California, Irvine, CA 92697, USA; Source Info: Jan2012, Vol. 376 Issue 3, p216; Subject Term: METALLIC films; Subject Term: NUMERICAL analysis; Subject Term: LENSES; Subject Term: SYMMETRY (Physics); Subject Term: GREEN'S functions; Subject Term: WAVELENGTHS; Subject Term: DIELECTRICS; NAICS/Industry Codes: 327215 Glass Product Manufacturing Made of Purchased Glass; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.physleta.2011.11.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67623273&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Przybyla, C.P. AU - McDowell, D.L. T1 - Microstructure-sensitive extreme-value probabilities of high-cycle fatigue for surface vs. subsurface crack formation in duplex Ti–6Al–4V JO - Acta Materialia JF - Acta Materialia Y1 - 2012/01// VL - 60 IS - 1 M3 - Article SP - 293 EP - 305 SN - 13596454 AB - Abstract: The distributions of the extreme-value driving force(s) for surface vs. subsurface fatigue crack formation (nucleation and early growth) in high-cycle fatigue are evaluated for a microstructure variant of duplex Ti–6Al–4V. In polycrystalline metals, previous work has explored estimation of the driving force(s) for fatigue crack formation at the scale of the grains by computing non-local fatigue indicator parameters (FIPs) based on the cyclic plastic strain averaged over domains on the length scale of the grains. Instantiated statistical volume elements (SVEs), which sample the distributed microstructure attributes of interest for a given material system, can be simulated via the finite element method with embedded polycrystalline plasticity models to estimate the distributed plasticity and resulting FIPs. This strategy of simulating multiple SVEs is in contrast to the simulation of a single representative volume element which is typically untenably large for extreme-value distributions of microstructure attributes or response variables. In this work, multiple SVEs are instantiated with both traction-free (i.e. surface) boundary conditions and fully periodic (i.e. subsurface) boundary conditions. In addition to estimating the extreme-value distributions of the FIPs, newly introduced extreme-value marked correlation functions are applied to characterize the coupled crystallographic microstructure attributes (e.g. grain size, grain orientation, grain misorientation) that most influence the extreme-value distributions of the FIPs. It is shown that there is overlap in the distributions of the driving forces for surface vs. subsurface crack formation in the low to moderate range of failure probability based on FIPs; however, at higher failure probability levels, the driving forces are highest for surface crack formation. The overlap in the distributions of the driving forces for fatigue crack formation in the low to moderate probability range may assist in describing the competing surface vs. subsurface failure modes that are observed experimentally. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - MICROSTRUCTURE KW - METALS -- Fatigue KW - SURFACES (Technology) KW - NUCLEATION KW - CRYSTAL growth KW - FRACTURE mechanics KW - POLYCRYSTALS KW - Crystal plasticity KW - Extreme value statistics KW - High-cycle fatigue KW - Texture KW - Ti–6Al–4V N1 - Accession Number: 67250660; Przybyla, C.P. 1; Email Address: craig.przybyla@wpafb.af.mil McDowell, D.L. 2,3; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 2: Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USA 3: George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA; Source Info: Jan2012, Vol. 60 Issue 1, p293; Subject Term: TITANIUM alloys; Subject Term: MICROSTRUCTURE; Subject Term: METALS -- Fatigue; Subject Term: SURFACES (Technology); Subject Term: NUCLEATION; Subject Term: CRYSTAL growth; Subject Term: FRACTURE mechanics; Subject Term: POLYCRYSTALS; Author-Supplied Keyword: Crystal plasticity; Author-Supplied Keyword: Extreme value statistics; Author-Supplied Keyword: High-cycle fatigue; Author-Supplied Keyword: Texture; Author-Supplied Keyword: Ti–6Al–4V; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.actamat.2011.09.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67250660&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Christiansen, Bradley D. AU - Heller, Eric R. AU - Coutu Jr., Ronald A. AU - Vetury, Ramakrishna AU - Shealy, Jeffrey B. T1 - A Very Robust AlGaN/GaN HEMT Technology to High Forward Gate Bias and Current. JO - Active & Passive Electronic Components JF - Active & Passive Electronic Components Y1 - 2012/01// M3 - Article SP - 1 EP - 4 PB - Hindawi Publishing Corporation SN - 08827516 AB - Reports to date of GaN HEMTs subjected to forward gate bias stress include varied extents of degradation. We report an extremely robust GaN HEMT technology that survived--contrary to conventional wisdom--high forward gate bias (+6V) and current (> 1.8 A/mm) for >17.5 hours exhibiting only a slight change in gate diode characteristic, little decrease inmaximumdrain current, with only a 0.1 V positive threshold voltage shift, and, remarkably, a persisting breakdown voltage exceeding 200 V. [ABSTRACT FROM AUTHOR] AB - Copyright of Active & Passive Electronic Components is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM gallium nitride KW - ROBUST control KW - LOGIC circuits KW - ELECTRIC currents KW - ELECTRIC potential KW - BREAKDOWN (Electricity) N1 - Accession Number: 90174533; Christiansen, Bradley D. 1; Email Address: bradley.christiansen@wpafb.af.mil Heller, Eric R. 2 Coutu Jr., Ronald A. 1 Vetury, Ramakrishna 3 Shealy, Jeffrey B. 3; Affiliation: 1: Department of Electrical and Computer Engineering, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH 45433, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 3: Defense and Power Business Unit, RF Micro Devices, Inc., Charlotte, NC 28269, USA; Source Info: 2012, p1; Subject Term: ALUMINUM gallium nitride; Subject Term: ROBUST control; Subject Term: LOGIC circuits; Subject Term: ELECTRIC currents; Subject Term: ELECTRIC potential; Subject Term: BREAKDOWN (Electricity); Number of Pages: 4p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1155/2012/493239 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=90174533&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Leever, Benjamin J. AU - Bailey, Christopher A. AU - Marks, Tobin J. AU - Hersam, Mark C. AU - Durstock, Michael F. T1 - In Situ Characterization of Lifetime and Morphology in Operating Bulk Heterojunction Organic Photovoltaic Devices by Impedance Spectroscopy. JO - Advanced Energy Materials JF - Advanced Energy Materials Y1 - 2012/01// VL - 2 IS - 1 M3 - Article SP - 120 EP - 128 SN - 16146832 AB - Time-dependent charge transport in operating poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) bulk heterojunction organic photovoltaic (OPV) devices has been characterized with impedance spectroscopy. Devices with varied composition and morphology were measured over a range of illumination intensities ranging from dark conditions to 1 sun and applied bias voltages ranging from 0.0 V to 0.75 V. Using an equivalent circuit model, materials properties such as dielectric constant and conductivity were determined and found to be in agreement with values measured by other methods. Average carrier lifetimes were also extracted from the model and found to correlate with measured power conversion efficiencies. At the short circuit condition and ∼1 sun illumination, the average electron lifetime was found to vary from 7.8 to 22 μs for devices with power conversion efficiencies ranging from 2.0 to 2.5%. These results suggest that impedance spectroscopy is an effective tool for predicting how processing parameters can impact device performance in organic bulk heterojunction photovoltaic devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Advanced Energy Materials is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 70230154; Leever, Benjamin J. 1 Bailey, Christopher A. 2 Marks, Tobin J. 3 Hersam, Mark C. 4 Durstock, Michael F. 2; Affiliation: 1: Department of Materials Science & Engineering and the Argonne-Northwestern Solar Energy Research Institute Northwestern University, 2220 Campus Drive, Evanston, IL, 60208-3108, USA, and Air Force, Research Laboratory 2941 Hobson Way, Wright-Patterson AFB, OH, 45433-7750, USA 2: Air Force Research Laboratory, 2941 Hobson Way, Wright-Patterson AFB, OH, 45433-7750, USA 3: Department of Chemistry, Department of Materials Science & Engineering, the Materials Research Institute, and the Argonne-Northwestern Solar Energy Research Institute, Northwestern University, 2145 Sheridan Rd, Evanston, IL, 60208-3113, USA 4: Department of Materials Science & Engineering, Department of Chemistry, the Materials Research Institute, and the Argonne-Northwestern Solar Energy Research Institute, Northwestern University, 2220 Campus Dr, Evanston, IL, 60208-3108, USA; Source Info: Jan2012, Vol. 2 Issue 1, p120; Number of Pages: 9p; Document Type: Article L3 - 10.1002/aenm.201100357 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70230154&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lau, Carolin AU - Adkins, Emily R. AU - Ramasamy, Ramaraja P. AU - Luckarift, Heather R. AU - Johnson, Glenn R. AU - Atanassov, Plamen T1 - Design of Carbon Nanotube-Based Gas-Diffusion Cathode for O2 Reduction by Multicopper Oxidases. JO - Advanced Energy Materials JF - Advanced Energy Materials Y1 - 2012/01// VL - 2 IS - 1 M3 - Article SP - 162 EP - 168 SN - 16146832 AB - Multicopper oxidases, such as laccase or bilirubin oxidase, are known to reduce molecular oxygen at very high redox potentials, which makes them attractive biocatalysts for enzymatic cathodes in biological fuel cells. By designing an enzymatic gas-diffusion electrode, molecular oxygen can be supplied through the gaseous phase, avoiding solubility and diffusion limitations typically associated with liquid electrolytes. In doing so, the current density of enzymatic cathodes can theoretically be enhanced. This publication presents a material study of carbon/Teflon composites that aim to optimize the functionality of the gas-diffusion and catalytic layers for application in enzymatic systems. The modification of the catalytic layer with multiwalled carbon nanotubes, for example, creates the basis for stronger π-π stacking interactions through tethered enzymatic linkers, such as pyrenes or perylene derivates. Cyclic voltammograms show the effective direct electron contact of laccase with carbon nanotube-modified electrodes via tethered crosslinking molecules as a model system. The polarization behavior of laccase-modified gas-diffusion electrodes reveals open-circuit potentials of +550 mV (versus Ag/AgCl) and current densities approaching 0.5 mA cm2 (at zero potential) in air-breathing mode. [ABSTRACT FROM AUTHOR] AB - Copyright of Advanced Energy Materials is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 70230149; Lau, Carolin 1 Adkins, Emily R. 1 Ramasamy, Ramaraja P. 2,3 Luckarift, Heather R. 2 Johnson, Glenn R. 2 Atanassov, Plamen 1; Affiliation: 1: The University of New Mexico, Center for Emerging Energy Technologies, Albuquerque, NM 87131, USA 2: Microbiology and Applied Biochemistry, Airbase Sciences, Air Force Research Laboratory, Tyndall Air Force Base, FL 32403, USA 3: Nano-Electrochemistry Laboratory, Faculty of Engineering, University of Georgia, Athens, GA 30602, USA; Source Info: Jan2012, Vol. 2 Issue 1, p162; Number of Pages: 7p; Document Type: Article L3 - 10.1002/aenm.201100433 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70230149&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mizuno, Donald R. AU - Price, Stephan D. AU - Kraemer, Kathleen E. AU - Kuchar, Thomas A. AU - Johnston, Janet C. T1 - Debris swarms seen by SMEI JO - Advances in Space Research JF - Advances in Space Research Y1 - 2012/01// VL - 49 IS - 1 M3 - Article SP - 162 EP - 176 SN - 02731177 AB - Abstract: The large 3°×60° fields-of-view of the Solar Mass Ejection Imager (SMEI) instruments are oriented on the stabilized Coriolis satellite to image most of the sky each Sun-synchronous orbit. Besides observing coronal mass ejections, the SMEI mission objective, SMEI also has detected a plethora of Earth-orbiting satellites (resident space objects or RSOs) brighter than ∼8th magnitude at a rate of about 1 per minute. Occasionally, SMEI sees an RSO swarm: a sudden onset of a large number of RSOs, many more than the nominal rate, upto dozens detected in a 4-s frame. These swarms usually last for a few minutes. A sample of six such RSO ensembles is analyzed in this paper in which the distance and the direction of the velocity vector for individual objects are estimated. We present the observational evidence indicating that the swarms must be near-field objects traveling in orbits near that of Coriolis, and that the relatively speeds between the objects and Coriolis are low. Further, analyses indicate that the RSOs are quite close (<20m) and are generally moving radially away from the satellite. The predicted encounter geometries for Coriolis passing through or near a small debris cloud is, generally, quite inconsistent with the observations. The most likely explanation consistent with the observations is that SMEI is seeing debris being ejected from the Coriolis spacecraft itself. An analysis of distance and brightness for a subset of the RSOs indicates that the median diameter of the debris particles is ∼80μm. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORONAL mass ejections KW - ARTIFICIAL satellites KW - SPACE vehicles KW - SOLAR activity KW - NEAR-fields KW - EARTH (Planet) KW - ORBIT KW - Solar Mass Ejection Imager KW - Space debris N1 - Accession Number: 69954499; Mizuno, Donald R. 1 Price, Stephan D. 2 Kraemer, Kathleen E. 2; Email Address: kathleen.kraemer@bc.edu Kuchar, Thomas A. 1 Johnston, Janet C. 2; Affiliation: 1: Institute for Scientific Research, Boston College, Chestnut Hill, MA, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA, USA; Source Info: Jan2012, Vol. 49 Issue 1, p162; Subject Term: CORONAL mass ejections; Subject Term: ARTIFICIAL satellites; Subject Term: SPACE vehicles; Subject Term: SOLAR activity; Subject Term: NEAR-fields; Subject Term: EARTH (Planet); Subject Term: ORBIT; Author-Supplied Keyword: Solar Mass Ejection Imager; Author-Supplied Keyword: Space debris; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.asr.2011.09.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69954499&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CASE AU - Fang, Shuo AU - Long, Samuel R. AU - Disotell, Kevin J. AU - Gregory, James W. AU - Semmelmayer, Frank C. AU - Guyton, Robert W. T1 - Comparison of Unsteady Pressure-Sensitive Paint Measurement Techniques. JO - AIAA Journal JF - AIAA Journal Y1 - 2012/01// VL - 50 IS - 1 M3 - Case Study SP - 109 EP - 122 SN - 00011452 AB - The current work focuses on the development and application of fast-responding polymer/ceramic pressure-sensitive paint (PSP) as an advanced optical surface pressure measurement technique for unsteady flowfields in large-scale wind tunnels. Three different data acquisition methods for PSP are evaluated and compared: phase averaging, real-time (high-speed) imaging, and single-shot lifetime imaging. All three techniques were applied to the measurement of the time-resolved, global surface pressure distribution on a hemispherical dome in Mach 0.6 freestream flow at a total pressure of 71.8 kPa, where the Reynolds number based on dome diameter (0.254 m) was 2.4 x 106. At this flow condition, a predominant shear layer oscillating at 400 Hz over the test model was detected by pressure transducer measurement, providing an appropriate trigger for the PSP optical instrumentation. In the phase-averaging technique, pulsed LED arrays were phase-locked to the shear-layer frequency, and a long camera exposure time captured the pressure distribution over many phase-averaged cycles. In the real-time approach, high-intensity continuous LED illumination was paired with a high-speed camera operating at a frame rate of 10 kHz to capture the pressure distribution without any image averaging. In the lifetime-based single-shot approach, instantaneous pressure information was acquired by exciting the paint with pulsed laser energy and ratioing two exposure gates, which covered the luminescent lifetime decay of the luminophore molecules resulting from each excitation pulse. An assessment of the three methods is presented, with the benefits and disadvantages of each technique evaluated through the case study of the hemispherical dome. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRESSURE-sensitive paint KW - WIND tunnels KW - ACQUISITION of data KW - MACH number KW - REYNOLDS number KW - PRESSURE transducers KW - AERODYNAMIC load N1 - Accession Number: 70204464; Fang, Shuo 1 Long, Samuel R. 1 Disotell, Kevin J. 1 Gregory, James W. 1 Semmelmayer, Frank C. 2 Guyton, Robert W. 2; Affiliation: 1: Ohio State University, Columbus, Ohio, 43235 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, 45433; Source Info: Jan2012, Vol. 50 Issue 1, p109; Subject Term: PRESSURE-sensitive paint; Subject Term: WIND tunnels; Subject Term: ACQUISITION of data; Subject Term: MACH number; Subject Term: REYNOLDS number; Subject Term: PRESSURE transducers; Subject Term: AERODYNAMIC load; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 14p; Document Type: Case Study L3 - 10.2514/1.J051167 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70204464&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rizzetta, Donald P. AU - Visbal, Miguel R. T1 - Effect of Plasma-Based Control on Low-Reynolds-Number Flapping Airfoil Performance. JO - AIAA Journal JF - AIAA Journal Y1 - 2012/01// VL - 50 IS - 1 M3 - Article SP - 131 EP - 147 SN - 00011452 AB - Large-eddy simulation is employed to investigate the use of plasma-based flow control for the flapping motion of a wing section at low Reynolds number. The SD7003 airfoil section and imposed oscillatory motion of the investigation are representative of micro air vehicle applications. Dielectric-barrier-discharge plasma actuation is used to modify the transitional flow and improve aerodynamic performance. Solutions are obtained to the Navier-Stokes equations that were augmented by source terms used to represent plasma-induced body forces imparted by the actuator on the fluid. A simple phenomenological model provided the body force resulting from the electric field generated by the plasma. The numerical method is based upon an implicit time-marching scheme with spatial high fidelity, an implicit large-eddy simulation approach, and domain decomposition in order to perform calculations on a parallel computing platform. Solutions are obtained for combined periodic pitching and plunging motion about an 8° mean angle of attack at chord-based Reynolds numbers of 30,000 and 60,000. Baseline simulations without control are compared with cases employing plasma actuation in order to assess effects on performance. Comparison is also made with experimental data, and a grid resolution study is performed for validation purposes. Plasma-based control is able to mitigate, but not completely eliminate, the massive separation that occurs during the unsteady motion. It is shown that plasma actuation can reduce drag by 80% over the flapping cycle and increase the lift-to-drag ratio by a factor of 5. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REYNOLDS number KW - AEROFOILS KW - PLASMA (Ionized gases) KW - LARGE eddy simulation models KW - FLOW control (Data transmission systems) KW - NAVIER-Stokes equations KW - ELECTRIC fields KW - LIFT-to-drag ratio N1 - Accession Number: 70204466; Rizzetta, Donald P. 1 Visbal, Miguel R. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512; Source Info: Jan2012, Vol. 50 Issue 1, p131; Subject Term: REYNOLDS number; Subject Term: AEROFOILS; Subject Term: PLASMA (Ionized gases); Subject Term: LARGE eddy simulation models; Subject Term: FLOW control (Data transmission systems); Subject Term: NAVIER-Stokes equations; Subject Term: ELECTRIC fields; Subject Term: LIFT-to-drag ratio; Number of Pages: 17p; Document Type: Article L3 - 10.2514/1.J051182 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70204466&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bless, S. AU - Cooper, W. AU - Watanabe, K. AU - Peden, R. T1 - DECELERATION OF PROJECTILES IN SAND. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/01// VL - 1426 IS - 1 M3 - Article SP - 45 EP - 47 PB - American Institute of Physics SN - 0094243X AB - Penetration of projectiles was measured for hemispherical and conical nose shapes penetrating granular media. Targets were beds of Ottawa sand and Eglin sand. Projectiles were rigid metals. Experimental parameters that were varied included velocity (from 300 to 600 m/s), nose shape, sand density, and scale (from 5 mm to 20 mm). Strong evidence for scale effects is found: 5 mm diameter projectiles are less effective penetrators than 12.5, 15, or 20 mm diameter penetrators. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROJECTILES KW - GRANULAR materials KW - MATERIALS -- Mechanical properties KW - DENSITY KW - BULK solids KW - penetration KW - Poncelet KW - sand N1 - Accession Number: 100955169; Bless, S. 1 Cooper, W. 2 Watanabe, K. 3 Peden, R. 2; Affiliation: 1: Institute for Advanced Technology, University of Texas at Austin, TX, USA 2: Air Force Research Laboratory, Eglin AFB, Florida, USA 3: Osaka University, Japan; Source Info: 2012, Vol. 1426 Issue 1, p45; Subject Term: PROJECTILES; Subject Term: GRANULAR materials; Subject Term: MATERIALS -- Mechanical properties; Subject Term: DENSITY; Subject Term: BULK solids; Author-Supplied Keyword: penetration; Author-Supplied Keyword: Poncelet; Author-Supplied Keyword: sand; NAICS/Industry Codes: 484222 Dry bulk materials trucking, local; NAICS/Industry Codes: 484232 Dry bulk materials trucking, long distance; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.3686217 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100955169&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jordan, J. L. AU - Siviour, C. R. AU - Woodworth, B. T. T1 - HIGH STRAIN RATE MECHANICAL PROPERTIES OF GLASSY POLYMERS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/01// VL - 1426 IS - 1 M3 - Article SP - 191 EP - 194 PB - American Institute of Physics SN - 0094243X AB - Since the early 1990s, a range of experimental data has been generated describing the response of glassy polymers to high strain rate loading in compression. More recently, research programs that study the combined effects of temperature and strain rate have made significant steps in providing better understanding of the physics behind the observed response, and also in modeling this response. However, limited data are available in tension, and even more limited are data describing both the compressive and tensile response of the same polymer. This paper investigates the compressive and tensile response of glassy polymers, using poly(vinyl chloride) as a representative material, across a range of stain rates from quasi-static to dynamic. The pressure dependant yield in glassy polymers will be discussed through comparison of the tensile and compressive yield stresses. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - POLYMERS KW - COMPRESSIVE strength KW - TENSILE strength KW - HOPKINSON bars (Testing) KW - high strain rate KW - poly(vinyl chloride) KW - pressure dependence KW - split Hopkinson pressure bar N1 - Accession Number: 100955203; Jordan, J. L. 1 Siviour, C. R. 2 Woodworth, B. T. 1; Affiliation: 1: Air Force Research Laboratory, Eglin AFB, FL 32542 2: Department of Engineering Science, University of Oxford, Parks Road, Oxford; Source Info: 2012, Vol. 1426 Issue 1, p191; Subject Term: STRAINS & stresses (Mechanics); Subject Term: POLYMERS; Subject Term: COMPRESSIVE strength; Subject Term: TENSILE strength; Subject Term: HOPKINSON bars (Testing); Author-Supplied Keyword: high strain rate; Author-Supplied Keyword: poly(vinyl chloride); Author-Supplied Keyword: pressure dependence; Author-Supplied Keyword: split Hopkinson pressure bar; Number of Pages: 4p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.3686252 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100955203&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jenkins, C. M. AU - Horie, Y. AU - Lindsay, C. M. AU - Butler, G. C. AU - Lambert, D. AU - Welle, E. J. T1 - CYLINDRICAL CONVERGING SHOCK INITIATION OF REACTIVE MATERIALS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/01// VL - 1426 IS - 1 M3 - Article SP - 197 EP - 200 PB - American Institute of Physics SN - 0094243X AB - Recent research has been conducted that builds on the Forbes et al. (1997) study of inducing a rapid solid state reaction in a highly porous core using a converging cylindrical shock driven by a high explosive. The high explosive annular charge used in this research to compress the center reactive core was comparable to PBXN-110. Some modifications were made on the physical configuration of the test item for scale-up and ease of production. The reactive materials (I2O5/Al and I2O5/Al/Teflon) were hand mixed and packed to a tap density of about 32 percent. Data provided by a Cordon 114 high speed framing camera and a Photon Doppler Velocimetry instrument provided exit gas expansion, core particle and cylinder wall velocities. Analysis indicates that the case expansion velocity differs according to the core formulation and behaved similar to the baseline high explosive core with the exit gas of the reactive materials producing comparable velocities. Results from CTH hydrocode used to model the test item compares favorably to the experimental results. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRACK initiation (Fracture mechanics) KW - MATERIALS -- Mechanical properties KW - SOLID state chemistry KW - CHEMICAL reactions KW - VELOCIMETRY KW - induced high pressure reactions KW - Pressure amplification KW - Shock wave N1 - Accession Number: 100955204; Jenkins, C. M. 1 Horie, Y. 1 Lindsay, C. M. 1 Butler, G. C. 1 Lambert, D. 1 Welle, E. J. 1; Affiliation: 1: Air Force Research Laboratory, Munitions Division, Eglin AFB, Florida 32542, U.S.A.; Source Info: 2012, Vol. 1426 Issue 1, p197; Subject Term: CRACK initiation (Fracture mechanics); Subject Term: MATERIALS -- Mechanical properties; Subject Term: SOLID state chemistry; Subject Term: CHEMICAL reactions; Subject Term: VELOCIMETRY; Author-Supplied Keyword: induced high pressure reactions; Author-Supplied Keyword: Pressure amplification; Author-Supplied Keyword: Shock wave; Number of Pages: 4p; Illustrations: 1 Black and White Photograph, 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.3686253 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100955204&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yoo, S. AU - Stewart, D. S. AU - Choi, S. AU - Lambert, D. E. T1 - MODELING KINETICS FOR THE REACTION OF ALUMINUM AND TEFLON AND THE SIMULATION OF ITS ENERGETIC FLOW MOTION. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/01// VL - 1426 IS - 1 M3 - Article SP - 351 EP - 354 PB - American Institute of Physics SN - 0094243X AB - Simulations with reduced kinetic models are used to study shock ignition and detonation in reactive materials that may support non-classical detonation. Porous aluminum Teflon oxidizer mixtures that support combustion reactions in air are considered, as a member of a class of materials with intrinsic interest. We recast a phenomenological theory [4] with realistic kinetics with end products whose primary components are AlF3, CO, CO2 and Al2O3. Intermediate products include at least thirty elementary reactions; a sub-set can be selected to simplify, but a hard problem remains. Results of the multi-species evolution and its impact on rapid self-oxidizing combustion and possible detonation conditions and the computational methods are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL kinetics KW - CHEMICAL reactions KW - ALUMINUM -- Analysis KW - POLYTEF KW - SIMULATION methods & models KW - modeling of EOS of products KW - non-ideal explosive KW - propagation KW - reaction zone N1 - Accession Number: 100955242; Yoo, S. 1 Stewart, D. S. 1 Choi, S. 1 Lambert, D. E. 2; Affiliation: 1: Mechanical Science and Engineering, University of Illinois, Urbana, IL 61801 2: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, 32542; Source Info: 2012, Vol. 1426 Issue 1, p351; Subject Term: CHEMICAL kinetics; Subject Term: CHEMICAL reactions; Subject Term: ALUMINUM -- Analysis; Subject Term: POLYTEF; Subject Term: SIMULATION methods & models; Author-Supplied Keyword: modeling of EOS of products; Author-Supplied Keyword: non-ideal explosive; Author-Supplied Keyword: propagation; Author-Supplied Keyword: reaction zone; Number of Pages: 4p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.3686291 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100955242&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rumchik, C. G. AU - Nep, R. AU - Butler, G. C. AU - Breaux, B. AU - Lindsay, C. M. T1 - THE MINIATURIZATION AND REPRODUCIBILITY OF THE CYLINDER EXPANSION TEST. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/01// VL - 1426 IS - 1 M3 - Article SP - 450 EP - 453 PB - American Institute of Physics SN - 0094243X AB - The cylinder test (aka cylinder expansion or Cylex test) is a standard way to measure the Gurney velocity and determine the JWL coefficients of an explosive and has been utilized by the explosives community for many years. More recently, early time shock information has been found to be useful in examining the early pressure-time history during the expansion of the cylinder. Work in the area of nanoenergetics has prompted Air Force researchers to develop a miniaturized version of the Cylex test, for materials with a sufficiently small critical diameter, to reduce the cost and quantity of material required for the test. This paper discusses the development of a half-inch diameter version of the Cylex test. A measurement systems analysis of the new miniaturized and the standard one-inch test has been performed using the liquid explosive PLX (nitromethane sensitized with ethylene diamine). The resulting velocity and displacement profiles obtained from the streak records were compared to Photo Doppler Velocimetry (PDV) measurements as well as CTH hydrocode simulations. Measurements of the Gurney value for both diameter tests were in agreement and yielded a similar level of variability of 1%-4%. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MINIATURE electronic equipment KW - THERMAL expansion KW - PRESSURE KW - NITROMETHANE KW - ETHYLENEDIAMINE KW - CTH KW - Cylex KW - Cylinder Expansion Test KW - hydrocode KW - Photo Doppler Velocimetry PDV N1 - Accession Number: 100955266; Rumchik, C. G. 1 Nep, R. 1 Butler, G. C. 1 Breaux, B. 1 Lindsay, C. M. 1; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542; Source Info: 2012, Vol. 1426 Issue 1, p450; Subject Term: MINIATURE electronic equipment; Subject Term: THERMAL expansion; Subject Term: PRESSURE; Subject Term: NITROMETHANE; Subject Term: ETHYLENEDIAMINE; Author-Supplied Keyword: CTH; Author-Supplied Keyword: Cylex; Author-Supplied Keyword: Cylinder Expansion Test; Author-Supplied Keyword: hydrocode; Author-Supplied Keyword: Photo Doppler Velocimetry PDV; Number of Pages: 4p; Illustrations: 1 Black and White Photograph, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.3686315 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100955266&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dorgan, Robert J. AU - Lee, Richard J. AU - Sutherland, Gerrit T. T1 - PREDICTING RUN DISTANCES FOR A MODIFIED WEDGE TEST. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/01// VL - 1426 IS - 1 M3 - Article SP - 511 EP - 514 PB - American Institute of Physics SN - 0094243X AB - Simulations were used to aid in the development of a modified wedge test (MWT). This explosive sensitivity experiment allows the shockwave curvature to be defined in order to investigate the effect of combined shock-shear loading on sensitivity. Various widths of PBXN-110 donor slabs were used to define the shockwave curvature introduced to wedge samples of the same explosive. The donor slabs were initiated with a linewave generator and a Detasheet booster, and the shock wave was attenuated using a slab of PMMA. In developing simulations for these three material experiments, calibrations of the PBXN-110 ignition and growth model and of the PMMA constitutive model were investigated in order to choose between several models found in the literature. A calibration shot from the MWT was also used to demonstrate the appropriateness of the models selected. Experimental results were compared to CTH calculations to indicate if there were effects associated with highly curved shock fronts that could not be adequately predicted. The run distances predicted in CTH for the thicker donor slab compare very favorably with the actual experiments; however, for thinner donor slabs, the actual experimental results seem to suggest a more sensitive behavior than the simulations are able to capture. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIMULATION methods & models KW - EXPLOSIVES KW - SHOCK waves KW - CALIBRATION KW - POLYMETHYLMETHACRYLATE KW - PBXN-110 KW - Shear initiation KW - shock sensitivity KW - shock-to-detonation transition N1 - Accession Number: 100955280; Dorgan, Robert J. 1 Lee, Richard J. 2 Sutherland, Gerrit T. 3; Affiliation: 1: Air Force Research Laboratory, Eglin Air Force Base, FL 2: Naval Surface Warfare Center, Indian Head Division, Indian Head, MD 3: Army Research Laboratory, Aberdeen Proving Grounds, MD; Source Info: 2012, Vol. 1426 Issue 1, p511; Subject Term: SIMULATION methods & models; Subject Term: EXPLOSIVES; Subject Term: SHOCK waves; Subject Term: CALIBRATION; Subject Term: POLYMETHYLMETHACRYLATE; Author-Supplied Keyword: PBXN-110; Author-Supplied Keyword: Shear initiation; Author-Supplied Keyword: shock sensitivity; Author-Supplied Keyword: shock-to-detonation transition; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325920 Explosives Manufacturing; Number of Pages: 4p; Illustrations: 1 Diagram, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.3686329 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100955280&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hopson, Michael V. AU - Lambert, David T1 - COMPUTATIONAL COMPARISONS OF STATISTICAL DESCRIPTIONS OF A TUNGSTEN ALLOY SUBJECTED TO EXPLOSIVE LOADING. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/01// VL - 1426 IS - 1 M3 - Article SP - 961 EP - 964 PB - American Institute of Physics SN - 0094243X AB - Computational continuum codes can provide many details on the response of metals to explosive loading. However, most "production" level calculations use a homogeneous description of the metal. This is an incorrect representation since metals possess a micro structure whose details create variations in material strength and other properties. Ultimately these variations influence the formation of fragments at the macroscopic level. The spatial scale of the microstructure is on the order of micrometers and is not readily accessible to current computational tools and resources for system level calculations. In this analysis, a Weibull distribution was applied to the yield stress of a tungsten alloy. This material was explosively loaded in a series of tests and the fragments were soft captured using a water tank. The distribution of initial yield stress was varied parametrically in order to determine the accuracy of this technique. Then the optimal distribution was kept constant and the seed value was varied in order to produce different realizations of the same material. Comparisons to test data are made. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TUNGSTEN alloys KW - COMPUTATIONAL complexity KW - EXPLOSIVES KW - STRENGTH of materials KW - WEIBULL distribution KW - FRACTURE mechanics KW - Fracture KW - Johnson-Cook yield KW - Presto KW - Weibull compensation KW - WHA N1 - Accession Number: 100955388; Hopson, Michael V. 1 Lambert, David 2; Affiliation: 1: Naval Surface Warfare Center, Dahlgren Division, 6138 NORC AVE, Dahlgren, VA 22448 2: Air Force Research Laboratory, Munitions Directorate 101 West Eglin Blvd, Ste. 135, Eglin Air Force Base, FL 32542; Source Info: 2012, Vol. 1426 Issue 1, p961; Subject Term: TUNGSTEN alloys; Subject Term: COMPUTATIONAL complexity; Subject Term: EXPLOSIVES; Subject Term: STRENGTH of materials; Subject Term: WEIBULL distribution; Subject Term: FRACTURE mechanics; Author-Supplied Keyword: Fracture; Author-Supplied Keyword: Johnson-Cook yield; Author-Supplied Keyword: Presto; Author-Supplied Keyword: Weibull compensation; Author-Supplied Keyword: WHA; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 4p; Illustrations: 1 Color Photograph, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.3686437 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100955388&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, Bradley E. AU - Flater, Philip J. AU - Abrahams, Rachel A. AU - Neel, Christopher H. AU - Reinhart, William D. AU - Chhabildas, Lalit C. T1 - DYNAMIC CHARACTERIZATION OF EGLIN STEEL BY SYMMETRIC IMPACT EXPERIMENTATION. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/01// VL - 1426 IS - 1 M3 - Article SP - 979 EP - 982 PB - American Institute of Physics SN - 0094243X AB - Well-controlled impact studies have been conducted on heat treated ES-1 (i.e. Eglin steel) to determine their dynamic material properties. In particular gas-gun and time-resolved laser interferometry was used to measure the fine structure in the particle velocity profile resulting from symmetric impact. Nominal impact pressures range from 8 to 20 GPa at corresponding impact velocities of 0.400 km/s and 1.00 km/s, respectively. These experiments have allowed us to estimate the dynamic yield and spall strengths and phase transition kinetics of the material. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DYNAMIC models KW - IMPACT (Mechanics) KW - LASER interferometry KW - ESTIMATION theory KW - PHASE transformations (Physics) KW - CHEMICAL kinetics KW - ES-1 KW - shock KW - steel KW - symmetric impact N1 - Accession Number: 100955392; Martin, Bradley E. 1 Flater, Philip J. 1 Abrahams, Rachel A. 1 Neel, Christopher H. 1 Reinhart, William D. 2 Chhabildas, Lalit C. 1; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542 2: Sandia National Laboratories, Albuquerque, NM 87185-1187; Source Info: 2012, Vol. 1426 Issue 1, p979; Subject Term: DYNAMIC models; Subject Term: IMPACT (Mechanics); Subject Term: LASER interferometry; Subject Term: ESTIMATION theory; Subject Term: PHASE transformations (Physics); Subject Term: CHEMICAL kinetics; Author-Supplied Keyword: ES-1; Author-Supplied Keyword: shock; Author-Supplied Keyword: steel; Author-Supplied Keyword: symmetric impact; Number of Pages: 4p; Illustrations: 1 Diagram, 2 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.3686441 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100955392&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maines, W. R. AU - Borg, J. AU - Reinhart, W. D. AU - Neel, C. AU - Nixon, M. AU - Chhabildas, L. C. T1 - RELEASE STATES IN ALUMINUM FOAM. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/01// VL - 1426 IS - 1 M3 - Article SP - 1439 EP - 1442 PB - American Institute of Physics SN - 0094243X AB - We report isentropic release states of uniaxial strain experiments and simulations on 6101 T-6 48-50% density open-cell aluminum foam compressed up to 10 GPa. Mesoscale simulations of the dynamic response of the foam are compared to experimental measurements and are used to build continuum constitutive relations. The mesoscale simulations capture the Hugoniot and the release behavior in the foam extremely well. The resulting constitutive relations built from mesoscale simulations compare favorably to those built from experimental results. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM foam KW - ISENTROPIC compression KW - STRAINS & stresses (Mechanics) KW - METALS -- Mechanical properties KW - CONTINUUM mechanics KW - aluminum foam KW - CTH KW - mesoscale simulations KW - release states N1 - Accession Number: 100955503; Maines, W. R. 1 Borg, J. 2 Reinhart, W. D. 3 Neel, C. 1 Nixon, M. 1 Chhabildas, L. C. 1; Affiliation: 1: Air Force Research Laboratory, Damage Mechanisms Branch, Eglin AFB, FL 32542 2: Mechanical Engineering Dept., Marquette University, Milwaukee, WI53233 3: Sandia National Laboratories, Shock Thermodynamics and Research, Albuquerque, NM 87110; Source Info: 2012, Vol. 1426 Issue 1, p1439; Subject Term: ALUMINUM foam; Subject Term: ISENTROPIC compression; Subject Term: STRAINS & stresses (Mechanics); Subject Term: METALS -- Mechanical properties; Subject Term: CONTINUUM mechanics; Author-Supplied Keyword: aluminum foam; Author-Supplied Keyword: CTH; Author-Supplied Keyword: mesoscale simulations; Author-Supplied Keyword: release states; Number of Pages: 4p; Illustrations: 2 Charts, 7 Graphs; Document Type: Article L3 - 10.1063/1.3686552 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100955503&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cooper, W. L. T1 - SHEAR STRESS MEASUREMENTS DURING HIGH-SPEED IMPACTS WITH SAND AND GLASS BEADS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/01// VL - 1426 IS - 1 M3 - Article SP - 1455 EP - 1458 PB - American Institute of Physics SN - 0094243X AB - Right-circular (ϕ 15 mm x 26 mm) and spherical (ϕ 10mm) projectiles were fired vertically-downward (300-1,000 m/s) into acrylic containers (ϕ 100-190 mm) containing either quartz Eglin sand or solid, amorphous glass beads. A variety of shearing conditions were observed; allowing estimation of stresses along the various shearing surfaces. Under certain conditions a false nose was formed of partially-crushed particles on the front of the projectile and the particulate media sheared along the false nose surface. The included angle of the false nose varies with impact velocity (up to a velocity of 375 m/s) and appears to be a residual artifact of initial impact conditions. An analytical model is presented to explain the false nose formation and stability during the projectile deceleration. Other impact conditions (especially on the front face of the spherical projectiles) resulted in shearing along the surface or surface abrasion. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHEARING force KW - IMPACT (Mechanics) KW - GLASS beads KW - AMORPHOUS alloys KW - SURFACES (Physics) KW - granular KW - high-speed KW - impact KW - Particulate KW - shear stress KW - shearing N1 - Accession Number: 100955507; Cooper, W. L. 1; Affiliation: 1: Air Force Research Laboratory, AFRL/RWMW, 101 W. Eglin Blvd Suite 135, Eglin AFB, FL 32542; Source Info: 2012, Vol. 1426 Issue 1, p1455; Subject Term: SHEARING force; Subject Term: IMPACT (Mechanics); Subject Term: GLASS beads; Subject Term: AMORPHOUS alloys; Subject Term: SURFACES (Physics); Author-Supplied Keyword: granular; Author-Supplied Keyword: high-speed; Author-Supplied Keyword: impact; Author-Supplied Keyword: Particulate; Author-Supplied Keyword: shear stress; Author-Supplied Keyword: shearing; Number of Pages: 4p; Illustrations: 1 Color Photograph, 6 Diagrams, 1 Graph; Document Type: Article L3 - 10.1063/1.3686556 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100955507&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kleiser, G. J. AU - Chhabildas, L. C. AU - Reinhart, W. D. AU - Anderson, W. W. T1 - RELEASE WAVE PROPAGATION IN SHOCKED MOLYBDENUM APPROACHING MELT CONDITIONS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2012/01// VL - 1426 IS - 1 M3 - Article SP - 1517 EP - 1520 PB - American Institute of Physics SN - 0094243X AB - The purpose of this study is to investigate the unloading behavior of molybdenum at shock pressures approaching the melt regime, particularly in the vicinity of a previously reported solid-solid transition. Symmetric impact experiments were conducted using a two-stage light gas gun and VISAR diagnostic system to examine molybdenum's behavior up to pressures of 305 GPa. The approach required compensating for the wave interaction due to the low impedance LiF window, but provided detailed information regarding the release state and comparison of the measured sound speeds support the existence of the phase transition. This paper describes the strategy, experimental method, and corresponding results which are used to draw conclusions about the dynamic behavior of molybdenum at high pressure. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THEORY of wave motion KW - MOLYBDENUM KW - MELTING KW - HIGH pressure (Technology) KW - IMPACT (Mechanics) KW - dynamic strength KW - molybdenum KW - phase transition KW - Shock loading N1 - Accession Number: 100955522; Kleiser, G. J. 1 Chhabildas, L. C. 1 Reinhart, W. D. 2 Anderson, W. W. 3; Affiliation: 1: Air Force Research Laboratory/Munitions Directorate, 101 W. Eglin Blvd, Eglin AFB, FL 32542 2: Sandia National Laboratorie, P.O. Box 5800, Albuquerque, New Mexico 87185 3: Los Alamos National Laboratories, P.O. Box 1663, Los Alamos, New Mexico, 87545; Source Info: 2012, Vol. 1426 Issue 1, p1517; Subject Term: THEORY of wave motion; Subject Term: MOLYBDENUM; Subject Term: MELTING; Subject Term: HIGH pressure (Technology); Subject Term: IMPACT (Mechanics); Author-Supplied Keyword: dynamic strength; Author-Supplied Keyword: molybdenum; Author-Supplied Keyword: phase transition; Author-Supplied Keyword: Shock loading; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 4p; Illustrations: 1 Diagram, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.3686571 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100955522&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rice Jr., Gen Edward A. T1 - Building toward the Future. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2012/01//Jan/Feb2012 VL - 26 IS - 1 M3 - Opinion SP - 4 EP - 7 PB - Superintendent of Documents SN - 1555385X AB - The author discusses the future of the U.S. Air Force. He mentions the 450-billion-dollar budget reduction of the Department of Defense (DOD) for 2012, pushing Air Force leaders to examine all missions and functions to identify where the service could take risk. Despite the budget cuts, he states that the Air Force continues to be the country's go-to force, providing global vigilance, reach, and power to exercise national strength. KW - FINANCE KW - BUDGET cuts KW - AIR forces KW - UNITED States. Air Force KW - UNITED States KW - UNITED States. Dept. of Defense N1 - Accession Number: 78153886; Rice Jr., Gen Edward A. 1; Affiliation: 1: Commander, Air Education and Training Command, Randolph AFB, Texas; Source Info: Jan/Feb2012, Vol. 26 Issue 1, p4; Subject Term: FINANCE; Subject Term: BUDGET cuts; Subject Term: AIR forces; Subject Term: UNITED States. Air Force; Subject Term: UNITED States; Company/Entity: UNITED States. Dept. of Defense; NAICS/Industry Codes: 928110 National Security; Number of Pages: 4p; Document Type: Opinion UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78153886&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coyne, Erik C. T1 - INFLUENCE WITH CONFIDENCE: ENABLING LAWFUL COMMAND INFLUENCE BY UNDERSTANDING UNLAWFUL COMMAND INFLUENCE--A GUIDE FOR COMMANDERS, JUDGE ADVOCATES, AND SUBORDINATES. JO - Air Force Law Review JF - Air Force Law Review Y1 - 2012/01// VL - 68 M3 - Article SP - 1 EP - 26 PB - Superintendent of Documents SN - 00948381 AB - The article presents information on the requirement of unlawful command influence under the military law of the U.S. for the purpose of enabling the lawful command influence with respect to the views of judge advocates, commanders and the subordinates. The difference between concept of unlawful command influence and lawful command influence is required by the practitioners of military justice. Information on the role of the military personnel of U.S. Army is also presented. KW - UNLAWFUL command influence (Military law) KW - JUDGE advocates KW - MILITARY law KW - COURTS-martial & courts of inquiry KW - MILITARY personnel KW - UNITED States KW - UNITED States. Army N1 - Accession Number: 77789090; Coyne, Erik C. 1; Affiliation: 1: United States Air Force Academy; Source Info: 2012, Vol. 68, p1; Subject Term: UNLAWFUL command influence (Military law); Subject Term: JUDGE advocates; Subject Term: MILITARY law; Subject Term: COURTS-martial & courts of inquiry; Subject Term: MILITARY personnel; Subject Term: UNITED States; Company/Entity: UNITED States. Army; NAICS/Industry Codes: 928110 National Security; Number of Pages: 26p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77789090&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McNulty, Shelly S. T1 - MYTH BUSTED: WOMEN ARE SERVING IN GROUND COMBAT POSITIONS. JO - Air Force Law Review JF - Air Force Law Review Y1 - 2012/01// VL - 68 M3 - Article SP - 119 EP - 165 PB - Superintendent of Documents SN - 00948381 AB - The article presents information on the participation of women in the ground combat positions during war with reference to assigning of women in the positions by the Department of Defense of the U.S. The rule of the direct ground combat includes the eligibility and the qualification of the service member. Information on the assignments controlled by the memorandum for the women in the Army, Navy, Marine Corps and the Air Force of the U.S. is also presented. KW - WOMEN in combat KW - ELIGIBILITY (Social aspects) KW - MILITARY personnel KW - UNITED States. Dept. of Defense KW - UNITED States. Army KW - UNITED States. Navy KW - UNITED States. Marine Corps KW - UNITED States. Air Force N1 - Accession Number: 77789093; McNulty, Shelly S. 1; Affiliation: 1: Assistant Professor for the Department of Law, United States Air Force Academy, Colorado; Source Info: 2012, Vol. 68, p119; Subject Term: WOMEN in combat; Subject Term: ELIGIBILITY (Social aspects); Subject Term: MILITARY personnel; Company/Entity: UNITED States. Dept. of Defense Company/Entity: UNITED States. Army Company/Entity: UNITED States. Navy Company/Entity: UNITED States. Marine Corps Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 47p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77789093&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ramer, Jacob A. T1 - EVIDENCE OBTAINED BY FOREIGN POLICE: ADMISSIBILITY AND THE ROLE OF FOREIGN LAW. JO - Air Force Law Review JF - Air Force Law Review Y1 - 2012/01// VL - 68 M3 - Article SP - 207 EP - 234 PB - Superintendent of Documents SN - 00948381 AB - The article presents information on the evidence obtained through the foreign police regarding the role and enforcement of foreign law and its admissibility of the U.S. The enforcement of the foreign law includes the application of military law, court martial under the military courts of the country. Information on the role of the foreign interrogations and the foreign searches regarding the foreign law is also presented. KW - ADMISSIBLE evidence KW - PLEADING & proof of foreign law KW - EVIDENCE (Law) KW - SEARCHES & seizures (Law) KW - MILITARY law KW - COURTS-martial & courts of inquiry KW - MILITARY courts KW - UNITED States N1 - Accession Number: 77789095; Ramer, Jacob A. 1; Affiliation: 1: Harvard University, Chicago-Kent College of Law, United States Air Force currently serving as Area Defense Counsel, Misawa Air Base, Japan; Source Info: 2012, Vol. 68, p207; Subject Term: ADMISSIBLE evidence; Subject Term: PLEADING & proof of foreign law; Subject Term: EVIDENCE (Law); Subject Term: SEARCHES & seizures (Law); Subject Term: MILITARY law; Subject Term: COURTS-martial & courts of inquiry; Subject Term: MILITARY courts; Subject Term: UNITED States; NAICS/Industry Codes: 928110 National Security; NAICS/Industry Codes: 911110 Defence services; Number of Pages: 28p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=77789095&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lore, Michael B. AU - Heimbuch, Brian K. AU - Brown, Teanne L. AU - Wander, Joseph D. AU - Hinrichs, Steven H. T1 - Effectiveness of Three Decontamination Treatments against Influenza Virus Applied to Filtering Facepiece Respirators. JO - Annals of Occupational Hygiene JF - Annals of Occupational Hygiene Y1 - 2012/01// VL - 56 IS - 1 M3 - Article SP - 92 EP - 101 SN - 00034878 AB - Filtering facepiece respirators (FFRs) are recommended for use as precautions against airborne pathogenic microorganisms; however, during pandemics demand for FFRs may far exceed availability. Reuse of FFRs following decontamination has been proposed but few reported studies have addressed the feasibility. Concerns regarding biocidal efficacy, respirator performance post decontamination, decontamination cost, and user safety have impeded adoption of reuse measures. This study examined the effectiveness of three energetic decontamination methods [ultraviolet germicidal irradiation (UVGI), microwave-generated steam, and moist heat] on two National Institute for Occupational Safety and Health-certified N95 FFRs (3M models 1860s and 1870) contaminated with H5N1. An aerosol settling chamber was used to apply virus-laden droplets to FFRs in a method designed to simulate respiratory deposition of droplets onto surfaces. When FFRs were examined post decontamination by viral culture, all three decontamination methods were effective, reducing virus load by >4 log median tissue culture infective dose. Analysis of treated FFRs using a quantitative molecular amplification assay (quantitative real-time polymerase chain reaction) indicated that UVGI decontamination resulted in lower levels of detectable viral RNA than the other two methods. Filter performance was evaluated before and after decontamination using a 1% NaCl aerosol. As all FFRs displayed <5% penetration by 300-nm particles, no profound reduction in filtration performance was caused in the FFRs tested by exposure to virus and subsequent decontamination by the methods used. These findings indicate that, when properly implemented, these methods effectively decontaminate H5N1 on the two FFR models tested and do not drastically affect their filtering function; however, other considerations may influence decisions to reuse FFRs. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of Occupational Hygiene is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DECONTAMINATION (From gases, chemicals, etc.) KW - METHODOLOGY KW - AEROSOLS (Sprays) KW - FACE KW - INDUSTRIAL hygiene KW - MEDICAL personnel KW - ORTHOMYXOVIRUSES KW - RESEARCH -- Finance KW - BREATHING apparatus KW - bioaerosol KW - decontamination KW - healthcare workers KW - influenza virus KW - N95 respirator KW - respirator reuse KW - UNITED States. Food & Drug Administration N1 - Accession Number: 70438528; Lore, Michael B. 1 Heimbuch, Brian K. 2 Brown, Teanne L. 1 Wander, Joseph D. 3 Hinrichs, Steven H. 1; Affiliation: 1: Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198, USA 2: Engineering and Science Division, Applied Research Associates, Panama City, FL 32401, USA 3: Airbase Sciences Branch, Air Force Research Laboratory, Tyndall Air Force Base, FL 32403, USA; Source Info: Jan2012, Vol. 56 Issue 1, p92; Subject Term: DECONTAMINATION (From gases, chemicals, etc.); Subject Term: METHODOLOGY; Subject Term: AEROSOLS (Sprays); Subject Term: FACE; Subject Term: INDUSTRIAL hygiene; Subject Term: MEDICAL personnel; Subject Term: ORTHOMYXOVIRUSES; Subject Term: RESEARCH -- Finance; Subject Term: BREATHING apparatus; Author-Supplied Keyword: bioaerosol; Author-Supplied Keyword: decontamination; Author-Supplied Keyword: healthcare workers; Author-Supplied Keyword: influenza virus; Author-Supplied Keyword: N95 respirator; Author-Supplied Keyword: respirator reuse; Company/Entity: UNITED States. Food & Drug Administration; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70438528&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sun, Wenting AU - Uddi, Mruthunjaya AU - Won, Sang Hee AU - Ombrello, Timothy AU - Carter, Campbell AU - Ju, Yiguang T1 - Kinetic effects of non-equilibrium plasma-assisted methane oxidation on diffusion flame extinction limits JO - Combustion & Flame JF - Combustion & Flame Y1 - 2012/01// VL - 159 IS - 1 M3 - Article SP - 221 EP - 229 SN - 00102180 AB - Abstract: The kinetic effects of low temperature non-equilibrium plasma assisted CH4 oxidation on the extinction of partially premixed methane flames was studied at 60Torr by blending 2% CH4 by volume into the oxidizer stream of a counterflow system. The experiments showed that non-equilibrium plasma can dramatically accelerate the CH4 oxidation at low temperature. The rapid CH4 oxidation via plasma assisted combustion resulted in fast chemical heat release and extended the extinction limits significantly. Furthermore, experimental results showed that partial fuel mixing in the oxidizer stream led to a dramatic decrease of O concentration due to its rapid consumption by CH4 oxidation at low temperature. The products of plasma assisted CH4 oxidation were measured using the Two-photon Absorption Laser-Induced Fluorescence (TALIF) method (for atomic oxygen, O), Fourier Transform Infrared (FTIR) spectroscopy, and Gas Chromatography (GC). The product concentrations were used to validate the plasma assisted combustion kinetic model. The comparisons showed the kinetic model over-predicted the CO, H2O and H2 concentrations and under-predicted CO2 concentration. A path flux analysis showed that O generated by the plasma was the critical species for extinction enhancement. In addition, the results showed that O was produced mainly by direct electron impact dissociation reactions and the collisional dissociation reactions of electronically excited molecules with O2. Moreover, these reactions involving electron impact and excited species collisional dissociation of CH4 contributed approximately a mole fraction of 0.1 of total radical production. The present experiments produced quantitative species and extinction data of low temperature plasma assisted combustion to constrain the uncertainties in plasma/flame kinetic models. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EQUILIBRIUM KW - PLASMA (Ionized gases) KW - METHANE KW - OXIDATION KW - DIFFUSION KW - FLAME KW - LOW temperatures KW - COMBUSTION KW - FUEL KW - SPECTRUM analysis KW - HEAT flux KW - Counterflow extinction KW - Nanosecond pulsed discharge KW - Partially premixed flames KW - Path flux analysis KW - Plasma assisted combustion KW - Plasma flame chemistry reactions N1 - Accession Number: 69534052; Sun, Wenting 1 Uddi, Mruthunjaya 1 Won, Sang Hee 1 Ombrello, Timothy 2 Carter, Campbell 2 Ju, Yiguang 1; Email Address: yju@princeton.edu; Affiliation: 1: Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA 2: US Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Jan2012, Vol. 159 Issue 1, p221; Subject Term: EQUILIBRIUM; Subject Term: PLASMA (Ionized gases); Subject Term: METHANE; Subject Term: OXIDATION; Subject Term: DIFFUSION; Subject Term: FLAME; Subject Term: LOW temperatures; Subject Term: COMBUSTION; Subject Term: FUEL; Subject Term: SPECTRUM analysis; Subject Term: HEAT flux; Author-Supplied Keyword: Counterflow extinction; Author-Supplied Keyword: Nanosecond pulsed discharge; Author-Supplied Keyword: Partially premixed flames; Author-Supplied Keyword: Path flux analysis; Author-Supplied Keyword: Plasma assisted combustion; Author-Supplied Keyword: Plasma flame chemistry reactions; NAICS/Industry Codes: 454310 Fuel Dealers; NAICS/Industry Codes: 454319 Other fuel dealers; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.combustflame.2011.07.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69534052&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zheng, Yahong Rosa AU - Shao, Tiange AU - Blasch, Erik T1 - A fast-converging space-time adaptive processing algorithm for non-Gaussian clutter suppression JO - Digital Signal Processing JF - Digital Signal Processing Y1 - 2012/01// VL - 22 IS - 1 M3 - Article SP - 74 EP - 86 SN - 10512004 AB - Abstract: The normalized fractionally-lower order moment (NFLOM) algorithm differs from the normalized least mean square (NLMS) algorithm in that it minimizes the lower order moment () of the error rather than the variance (). This paper first evaluates the performances of the NFLOM for space-time adaptive processing in heavy-tailed compound K clutters in terms of the excess mean square error (MSE), misalignment, beampatterns, and output signal-to-interference-and-noise-ratio (SINR). The results show that the MSE curve of a small-order NFLOM exhibits faster convergence but higher steady-state error than a large-order NFLOM. Second, this paper proposes a new variable-order FLOM algorithm to dynamically change the order during adaptation, thus achieving both fast initial convergence and low steady-state error. The new algorithm is applied to STAP for Gaussian and non-Gaussian clutter suppression. The simulation results show that it achieves the best compromise between fast convergence and low steady-state error in both types of clutters. [Copyright &y& Elsevier] AB - Copyright of Digital Signal Processing is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADAPTIVE control systems KW - COMPUTER algorithms KW - GAUSSIAN processes KW - SIGNAL-to-noise ratio KW - STOCHASTIC convergence KW - SPACE & time KW - Adaptive filtering KW - Beamforming KW - Clutter suppression KW - Compound K distribution KW - Convergence KW - Normalized fractional lower order moment (NFLOM) algorithm KW - Normalized least mean square (NLMS) algorithm KW - Space-time adaptive processing (STAP) N1 - Accession Number: 67331115; Zheng, Yahong Rosa 1; Email Address: zhengyr@mst.edu Shao, Tiange 1; Email Address: ts4g2@mst.edu Blasch, Erik 2; Email Address: erik.blasch@wpafb.af.mil; Affiliation: 1: Dept. of ECE, Missouri University of Science and Technology, Rolla, MO 65409, United States 2: Air Force Research Laboratory, 2241 Avionic Cir., WPAFB, OH 45433, United States; Source Info: Jan2012, Vol. 22 Issue 1, p74; Subject Term: ADAPTIVE control systems; Subject Term: COMPUTER algorithms; Subject Term: GAUSSIAN processes; Subject Term: SIGNAL-to-noise ratio; Subject Term: STOCHASTIC convergence; Subject Term: SPACE & time; Author-Supplied Keyword: Adaptive filtering; Author-Supplied Keyword: Beamforming; Author-Supplied Keyword: Clutter suppression; Author-Supplied Keyword: Compound K distribution; Author-Supplied Keyword: Convergence; Author-Supplied Keyword: Normalized fractional lower order moment (NFLOM) algorithm; Author-Supplied Keyword: Normalized least mean square (NLMS) algorithm; Author-Supplied Keyword: Space-time adaptive processing (STAP); Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.dsp.2010.11.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67331115&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chandra, Yenny AU - Stanciulescu, Ilinca AU - Eason, Thomas AU - Spottswood, Michael T1 - Numerical pathologies in snap-through simulations JO - Engineering Structures JF - Engineering Structures Y1 - 2012/01// VL - 34 M3 - Article SP - 495 EP - 504 SN - 01410296 AB - Abstract: Aircraft structures operating in severe environments may experience snap-through, causing the curvature on part or all of the structure to invert inducing fatigue damage. This paper examines the performance of beam and continuum nonlinear finite element formulations in conjunction with several popular implicit time stepping algorithms to assess the accuracy and stability of numerical simulations of snap-through events. Limitations of the structural elements are identified and we provide examples of interaction between spatial and temporal discretizations that affect the robustness of the overall scheme and impose strict limits on the size of the time step. These limitations need to be addressed in future works in order to develop accurate, robust and efficient simulation methods for response prediction of structures encountering extreme environments. [Copyright &y& Elsevier] AB - Copyright of Engineering Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRUCTURAL engineering KW - NUMERICAL analysis KW - SIMULATION methods & models KW - AIRPLANES KW - MATERIALS -- Fatigue KW - FINITE element method KW - Curved beam KW - Finite element KW - Numerical pathologies KW - Snap-through KW - Solid (continuum) elements KW - Structural elements KW - Time integrators N1 - Accession Number: 69628328; Chandra, Yenny 1 Stanciulescu, Ilinca 1; Email Address: ilinca@rice.edu Eason, Thomas 2 Spottswood, Michael 2; Affiliation: 1: Rice University, Department of Civil and Environmental Engineering, 6100 Main Street, Houston, TX 77005, USA 2: Air Force Research Laboratory, Structural Sciences Center, 2790 D. Street, WPAFB, OH, USA; Source Info: Jan2012, Vol. 34, p495; Subject Term: STRUCTURAL engineering; Subject Term: NUMERICAL analysis; Subject Term: SIMULATION methods & models; Subject Term: AIRPLANES; Subject Term: MATERIALS -- Fatigue; Subject Term: FINITE element method; Author-Supplied Keyword: Curved beam; Author-Supplied Keyword: Finite element; Author-Supplied Keyword: Numerical pathologies; Author-Supplied Keyword: Snap-through; Author-Supplied Keyword: Solid (continuum) elements; Author-Supplied Keyword: Structural elements; Author-Supplied Keyword: Time integrators; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.engstruct.2011.10.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69628328&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cohen, Kelly AU - Siegel, Stefan AU - Seidel, Jürgen AU - Aradag, Selin AU - McLaughlin, Thomas T1 - Nonlinear estimation of transient flow field low dimensional states using artificial neural nets JO - Expert Systems with Applications JF - Expert Systems with Applications Y1 - 2012/01// VL - 39 IS - 1 M3 - Article SP - 1264 EP - 1272 SN - 09574174 AB - Abstract: Feedback flow control of the wake of a circular cylinder at a Reynolds number of 100 is an interesting and challenging benchmark for controlling absolute instabilities associated with bluff body wakes. A two dimensional computational fluid dynamics simulation is used to develop low-dimensional models for estimator design. Actuation is implemented as displacement of the cylinder normal to the flow. The estimation approach uses a low dimensional model based on a truncated 6 mode Double Proper Orthogonal Decomposition (DPOD) applied to the streamwise velocity component of the flow field. Sensor placement is based on the intensity of the resulting spatial modes. A non-linear Artificial Neural Network Estimator (ANNE) was employed to map the velocity data to the mode amplitudes of the DPOD model. For a given four sensor configuration, developed using a previously validated strategy, ANNE performed better than two state-of-the-art approaches, namely, a Quadratic Stochastic Estimator (QSE) and a Linear Stochastic Estimator with time delays (DSE). [Copyright &y& Elsevier] AB - Copyright of Expert Systems with Applications is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UNSTEADY flow (Aerodynamics) KW - ESTIMATION theory KW - NEURAL networks (Computer science) KW - NETS (Mathematics) KW - FEEDBACK control systems KW - REYNOLDS number KW - COMPUTATIONAL fluid dynamics KW - STOCHASTIC analysis KW - ANNE KW - DPOD KW - Flow control KW - Low dimensional modeling KW - Turbulent cylinder wake N1 - Accession Number: 65941204; Cohen, Kelly 1 Siegel, Stefan 2 Seidel, Jürgen 2 Aradag, Selin 3; Email Address: selinaradag@gmail.com McLaughlin, Thomas 2; Affiliation: 1: Department of Aerospace Engineering, University of Cincinnati, Cincinnati, OH, USA 2: Department of Aeronautics, United States Air Force Academy, CO 80840, USA 3: Department of Mechanical Engineering, TOBB University of Economics and Technology, Ankara 06560, Turkey; Source Info: Jan2012, Vol. 39 Issue 1, p1264; Subject Term: UNSTEADY flow (Aerodynamics); Subject Term: ESTIMATION theory; Subject Term: NEURAL networks (Computer science); Subject Term: NETS (Mathematics); Subject Term: FEEDBACK control systems; Subject Term: REYNOLDS number; Subject Term: COMPUTATIONAL fluid dynamics; Subject Term: STOCHASTIC analysis; Author-Supplied Keyword: ANNE; Author-Supplied Keyword: DPOD; Author-Supplied Keyword: Flow control; Author-Supplied Keyword: Low dimensional modeling; Author-Supplied Keyword: Turbulent cylinder wake; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.eswa.2011.07.135 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65941204&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liu, Zheng AU - Blasch, Erik AU - Xue, Zhiyun AU - Zhao, Jiying AU - Laganiere, Robert AU - Wu, Wei T1 - Objective Assessment of Multiresolution Image Fusion Algorithms for Context Enhancement in Night Vision: A Comparative Study. JO - IEEE Transactions on Pattern Analysis & Machine Intelligence JF - IEEE Transactions on Pattern Analysis & Machine Intelligence Y1 - 2012/01// VL - 34 IS - 1 M3 - Article SP - 94 EP - 109 SN - 01628828 AB - Comparison of image processing techniques is critically important in deciding which algorithm, method, or metric to use for enhanced image assessment. Image fusion is a popular choice for various image enhancement applications such as overlay of two image products, refinement of image resolutions for alignment, and image combination for feature extraction and target recognition. Since image fusion is used in many geospatial and night vision applications, it is important to understand these techniques and provide a comparative study of the methods. In this paper, we conduct a comparative study on 12 selected image fusion metrics over six multiresolution image fusion algorithms for two different fusion schemes and input images with distortion. The analysis can be applied to different image combination algorithms, image processing methods, and over a different choice of metrics that are of use to an image processing expert. The paper relates the results to an image quality measurement based on power spectrum and correlation analysis and serves as a summary of many contemporary techniques for objective assessment of image fusion algorithms. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Pattern Analysis & Machine Intelligence is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIGITAL image processing KW - FLICKER fusion KW - NIGHT vision KW - RESOLUTION (Optics) KW - ALGORITHMS KW - IMAGE quality analysis KW - COMPARATIVE studies KW - Algorithm design and analysis KW - Context KW - context enhancement KW - Image fusion KW - image quality KW - Image resolution KW - Joints KW - Measurement KW - multiresolution analysis KW - Night vision KW - objective fusion assessment KW - performance metric KW - pixel-level image fusion N1 - Accession Number: 67368304; Liu, Zheng 1 Blasch, Erik 2 Xue, Zhiyun 3 Zhao, Jiying 4 Laganiere, Robert 4 Wu, Wei 5; Affiliation: 1: National Research Council Canada and University of Ottawa, Ottawa 2: US Air Force Research Laboratory, Dayton 3: Lockheed Martin, Bethesda 4: University of Ottawa, Ottawa 5: Sichuan University, Chengdu; Source Info: Jan2012, Vol. 34 Issue 1, p94; Subject Term: DIGITAL image processing; Subject Term: FLICKER fusion; Subject Term: NIGHT vision; Subject Term: RESOLUTION (Optics); Subject Term: ALGORITHMS; Subject Term: IMAGE quality analysis; Subject Term: COMPARATIVE studies; Author-Supplied Keyword: Algorithm design and analysis; Author-Supplied Keyword: Context; Author-Supplied Keyword: context enhancement; Author-Supplied Keyword: Image fusion; Author-Supplied Keyword: image quality; Author-Supplied Keyword: Image resolution; Author-Supplied Keyword: Joints; Author-Supplied Keyword: Measurement; Author-Supplied Keyword: multiresolution analysis; Author-Supplied Keyword: Night vision; Author-Supplied Keyword: objective fusion assessment; Author-Supplied Keyword: performance metric; Author-Supplied Keyword: pixel-level image fusion; Number of Pages: 0p; Document Type: Article L3 - 10.1109/TPAMI.2011.109 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67368304&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patton, L.K. AU - Frost, S.W. AU - Rigling, B.D. T1 - Efficient design of radar waveforms for optimised detection in coloured noise. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2012/01// VL - 6 IS - 1 M3 - Article SP - 21 EP - 29 PB - Institution of Engineering & Technology SN - 17518784 AB - The authors present a computationally efficient method for designing practical radar transmit waveforms that maximize the signal-to-interference-plus-noise ratio (SINR) in a known additive coloured Gaussian noise environment. The problem reduces to a non-linear constrained optimisation in which the authors seek the SINR-maximising transmit waveform that has a specified envelope and an acceptable autocorrelation sequence (ACS). The waveform ACS can be constrained either directly or indirectly. The direct approach involves forcing the ACS magnitude below a specified level at each lag. This provides the greatest control over the waveform ACS, but it is too computationally demanding for many realistic problem sizes. Indirect methods of ACS constraint can be computationally less demanding, but they afford only inexact control over the waveform ACS. The leading indirect approach, which relies on the so-called similarity constraint, requires significantly fewer calculations than the direct approach, but it provides significantly less SINR improvement. The indirect approach presented here relies on a parametrisation of the phase perturbations of a linear frequency modulated waveform. This approach requires fewer calculations than the direct approach, and can provide more SINR improvement than the similarity constraint approach. As such, this new approach may be preferable when computation time is limited. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DETECTORS KW - WAVE analysis KW - GAUSSIAN distribution KW - AUTOCORRELATION (Statistics) KW - NOISE KW - RADAR N1 - Accession Number: 70565878; Patton, L.K. 1 Frost, S.W. 2 Rigling, B.D. 3; Affiliation: 1: Matrix Research, Dayton, USA 2: Air Force Research Laboratory (AFRL/RYAP), Radar Signal Processing Branch, Radar Division, Sensors Directorate, Wright-Patterson AFB, USA 3: Wright State University, Department of Electrical Engineering, Dayton, USA; Source Info: Jan2012, Vol. 6 Issue 1, p21; Subject Term: DETECTORS; Subject Term: WAVE analysis; Subject Term: GAUSSIAN distribution; Subject Term: AUTOCORRELATION (Statistics); Subject Term: NOISE; Subject Term: RADAR; Number of Pages: 9p; Illustrations: 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1049/iet-rsn.2011.0071 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70565878&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mao, Xiangyu AU - Wang, Wei AU - Sun, Hui AU - Lu, Yalin AU - Chen, Xiaobing T1 - Structural, Magnetic and Ferroelectric Properties of Bi 5 FeTi 3 O 15 and Bi 5 Fe 0.5 Co 0.5 Ti 3 O 15 Ceramics. JO - Integrated Ferroelectrics JF - Integrated Ferroelectrics Y1 - 2012/01// VL - 132 IS - 1 M3 - Article SP - 16 EP - 21 SN - 10584587 AB - The compounds Bi5FeTi3O15 (BFTO) and Bi5Fe0.5Co0.5Ti3O15 (BFCT) were prepared by incorporating BiFeO3(BFO) and BiFe0.5Co0.5O3 (BFCO) into the host Bi4Ti3O12 using the solid state reaction technique. The X-ray diffraction and Raman shift data indicate that the as-prepared materials are of the four-layer Aurivillius phases. At room temperature, the half substitution of Fe-O layer by Co-O layer is found to result in the increase in the 2P r by about 35% and simultaneously the decrease in 2E c by about 41%, respectively. The magnetic moment at least tripled its value by substituting half Fe ions by Co ions. The remnant magnetization (2M r) and the coercive field (2H c) were about 7.8 memu/g and 410 Oe, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Integrated Ferroelectrics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - X-ray diffraction KW - SOLID state chemistry KW - MAGNETIC moments KW - MAGNETIZATION KW - CERAMICS KW - BISMUTH oxides KW - RAMAN effect KW - Aurivillius phases KW - ceramics KW - multiferroic KW - Raman shift N1 - Accession Number: 74464721; Mao, Xiangyu 1 Wang, Wei 1 Sun, Hui 1 Lu, Yalin 2 Chen, Xiaobing 1; Email Address: xbchen@yzu.edu.cn; Affiliation: 1: College of Physics Science and Technology, Yangzhou University, People's Republic of China 2: Leser and Optics Research Center, Department of Physics, US Air Force Academy, USA; Source Info: 2012, Vol. 132 Issue 1, p16; Subject Term: X-ray diffraction; Subject Term: SOLID state chemistry; Subject Term: MAGNETIC moments; Subject Term: MAGNETIZATION; Subject Term: CERAMICS; Subject Term: BISMUTH oxides; Subject Term: RAMAN effect; Author-Supplied Keyword: Aurivillius phases; Author-Supplied Keyword: ceramics; Author-Supplied Keyword: multiferroic; Author-Supplied Keyword: Raman shift; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; Number of Pages: 6p; Illustrations: 1 Black and White Photograph, 3 Graphs; Document Type: Article L3 - 10.1080/10584587.2012.660420 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74464721&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Greatrix, David AU - Leyva, Ivett AU - Pastrone, Dario AU - Kumar, Valsalayam Sanal AU - Smart, Michael T1 - Chemical Rocket Propulsion. JO - International Journal of Aerospace Engineering JF - International Journal of Aerospace Engineering Y1 - 2012/01// M3 - Article SP - 1 EP - 2 SN - 16875966 AB - An introduction to the journal is presented in which the editor discusses research and development related to chemical rocket propulsion systems. KW - PROPULSION systems KW - AIRPLANES -- Rocket engines KW - CHEMICALS N1 - Accession Number: 84965378; Greatrix, David 1; Email Address: greatrix@ryerson.ca Leyva, Ivett 2 Pastrone, Dario 3 Kumar, Valsalayam Sanal 4 Smart, Michael 5; Affiliation: 1: Department of Aerospace Engineering, Ryerson University, Toronto, ON, Canada M5B 2K3 2: Aerophysics Branch, Air Force Research Laboratory, Edwards AFB, CA 93524, USA 3: Dipartimento di Ingegneria Meccanica e Aerospaziale, Politecnico di Torino, 10129 Torino, Italy 4: Department of Aeronautical Engineering, Kumaraguru College of Technology, Coimbatore, Tamil Nadu 641006, India 5: School of Mechanical and Mining Engineering, University of Queensland, Brisbane, QLD 4072, Australia; Source Info: 2012, p1; Subject Term: PROPULSION systems; Subject Term: AIRPLANES -- Rocket engines; Subject Term: CHEMICALS; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 2p; Document Type: Article L3 - 10.1155/2012/715706 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84965378&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mall, Shankar AU - Nye, Andrew R. AU - Jefferson, George T1 - Tension-Tension Fatigue Behavior of NextelTM720/Alumina under Combustion Environment. JO - International Journal of Applied Ceramic Technology JF - International Journal of Applied Ceramic Technology Y1 - 2012/01// VL - 9 IS - 1 M3 - Article SP - 159 EP - 171 SN - 1546542X AB - Fatigue behavior of Nextel720™/alumina was investigated under combustion environment, which was then compared with that in laboratory environment. Fatigue strength for 90,000 cycles was equal to 150 MPa under combustion condition, while 170 MPa in laboratory environment. However, normalized fatigue strength (ratio of fatigue strength and ultimate tensile strength) was equal in combustion and laboratory environments. The difference in fatigue strength was due to thermal stresses from impingement of combustion flame on one side of specimen. Fractographic analysis showed that combustion had little effect on fiber/matrix bonding in only flame impingement region. Combustion environment was not thus damaging to Nextel720™/alumina. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Applied Ceramic Technology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TENSION control (Engineering) KW - MATERIALS -- Fatigue KW - ALUMINUM oxide KW - COMBUSTION KW - FRACTOGRAPHY KW - THERMAL stresses N1 - Accession Number: 70328905; Mall, Shankar 1 Nye, Andrew R. 1,2 Jefferson, George 1; Affiliation: 1: Air Force Institute of Technology, Wright-Patterson AFB, Ohio 45433 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433; Source Info: Jan2012, Vol. 9 Issue 1, p159; Subject Term: TENSION control (Engineering); Subject Term: MATERIALS -- Fatigue; Subject Term: ALUMINUM oxide; Subject Term: COMBUSTION; Subject Term: FRACTOGRAPHY; Subject Term: THERMAL stresses; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 13p; Document Type: Article L3 - 10.1111/j.1744-7402.2011.02625.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70328905&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Teel, Scott AU - Schweitzer, Dino AU - Fulton, Steve T1 - Teaching Undergraduate Software Engineering Using Open Source Development Tools. JO - Issues in Informing Science & Information Technology JF - Issues in Informing Science & Information Technology Y1 - 2012/01// VL - 9 M3 - Article SP - 63 EP - 73 SN - 15475840 AB - Software engineering is a key topic in computing education. Many schools offer a project-oriented course, or multi-course sequence, to teach students both the theoretical concepts of software development as well as the practical aspects of developing software systems in a team environment. Typically, in these courses, students practice the principles of requirements analysis, project management, a development methodology, and effective teamwork through a small-to-medium software project. For such a course to maintain its currency and relevancy, it is important for students to be exposed to current tools and techniques for software development. Capabilities, such as project management, requirements tracking, configuration management, collaboration tools, and team communication are ideally experienced in a hands-on manner as part of the project. Commercial tools can be cost-prohibitive and difficult to learn to use effectively in a one or two semester course. At our institution, we investigated the use of open source software development tools that were easy to learn, transferable to other classes to enhance their perceived value to the student, and could be easily integrated into the existing project-oriented two-course sequence in software engineering. This paper describes the tools and their integration in the course, our experience, student's reactions, and compares the results to previous course offerings. [ABSTRACT FROM AUTHOR] AB - Copyright of Issues in Informing Science & Information Technology is the property of Informing Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOFTWARE engineering -- Study & teaching KW - OPEN source software KW - RESEARCH KW - COMPUTER software development KW - TEACHING -- Research KW - LEARNING KW - open sour Introducti KW - Software engineering education N1 - Accession Number: 91273694; Teel, Scott 1; Email Address: scott.teel@usafa.edu Schweitzer, Dino 1; Email Address: dino.schweitzer@usafa.edu Fulton, Steve 1; Email Address: steven.fulton@usafa.edu; Affiliation: 1: United States Air Force Academy, Colorado, USA; Source Info: 2012, Vol. 9, p63; Subject Term: SOFTWARE engineering -- Study & teaching; Subject Term: OPEN source software; Subject Term: RESEARCH; Subject Term: COMPUTER software development; Subject Term: TEACHING -- Research; Subject Term: LEARNING; Author-Supplied Keyword: open sour Introducti; Author-Supplied Keyword: Software engineering education; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); NAICS/Industry Codes: 541511 Custom Computer Programming Services; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=91273694&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bond, Vanessa L. AU - Canfield, Robert A. AU - Cooper, Jonathan E. AU - Blair, Maxwell T1 - Experimental Nonlinear Static Deflections of a Subscale Joined Wing. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2012/01//Jan/Feb2012 VL - 49 IS - 1 M3 - Article SP - 329 EP - 333 SN - 00218669 AB - The article focuses on a study which described the design and testing of a geometrically and aerodynamically scaled sensorcraft model. A description of the modifications of the as-delivered finite element method (FRM) as well as the test setup for nonlinear static response are provided. Findings show that the FEM and experimental displacement both demonstrate nonlinear response with similarly shaped load-deflection curves. KW - AIRPLANES KW - FINITE element method KW - CURVES KW - GEOMETRY KW - AERODYNAMICS N1 - Accession Number: 72661125; Bond, Vanessa L. 1 Canfield, Robert A. 2 Cooper, Jonathan E. 3 Blair, Maxwell 4; Affiliation: 1: Air Force Operational Test and Evaluation Center, Edwards Air Force Base, California 93523 2: Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061 3: University of Liverpool, Liverpool, England L69 3GH, United Kingdom 4: United States Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jan/Feb2012, Vol. 49 Issue 1, p329; Subject Term: AIRPLANES; Subject Term: FINITE element method; Subject Term: CURVES; Subject Term: GEOMETRY; Subject Term: AERODYNAMICS; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.2514/1.C031423 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=72661125&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Banerjee, P. P. AU - Buller, S. H. AU - Liebig, C. M. AU - Basun, S. A. AU - Cook, G. AU - Evans, D. R. AU - Blanche, P.-A. AU - Thomas, J. AU - Christenson, C. W. AU - Peyghambarian, N. T1 - Time dynamics of self-pumped reflection gratings in a photorefractive polymer. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/01// VL - 111 IS - 1 M3 - Article SP - 013108 PB - American Institute of Physics SN - 00218979 AB - The time dynamics of self-pumped reflection gratings in a commonly used photorefractive polymer PDCST:PVK:ECZ-BBP:C60 with no additional electron sources or traps is investigated. While holes are normally the mobile charges and responsible for grating formation, our experimental observations, analyzed using multi-exponential fitting curves, show evidence of electrons in addition to holes as charge carriers, particularly above an applied field of 40 V/μm. The dependence of effective carrier mobilities on the applied electric field, deduced from experimental results, show stronger field dependence of electron mobility at high electric fields. At an applied field of 70 V/μm, electron and hole mobilities become approximately equal, and the contribution of electrons on grating formation becomes significant. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOREFRACTIVE materials KW - POLYMERS KW - HOLES (Electron deficiencies) KW - CHARGE carrier capture KW - ELECTRIC fields KW - ELECTRON mobility KW - DIFFRACTION gratings N1 - Accession Number: 70338594; Banerjee, P. P. 1,2 Buller, S. H. 1 Liebig, C. M. 1,3 Basun, S. A. 1,3 Cook, G. 1,3 Evans, D. R. 1 Blanche, P.-A. 4 Thomas, J. 4 Christenson, C. W. 4 Peyghambarian, N. 4; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433, 2: University of Dayton, Department of ECE and Electro-Optics Program, Dayton, Ohio 45469, 3: Azimuth Corporation, 4134 Linden Avenue, Suite 300, Dayton, Ohio 45432, 4: College of Optical Sciences, University of Arizona, Tucson, Arizona 85721,; Source Info: Jan2012, Vol. 111 Issue 1, p013108; Subject Term: PHOTOREFRACTIVE materials; Subject Term: POLYMERS; Subject Term: HOLES (Electron deficiencies); Subject Term: CHARGE carrier capture; Subject Term: ELECTRIC fields; Subject Term: ELECTRON mobility; Subject Term: DIFFRACTION gratings; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; Number of Pages: 4p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.3672832 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70338594&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lewis, W. K. AU - Rumchik, C. G. AU - Broughton, P. B. AU - Lindsay, C. M. T1 - Time-resolved spectroscopic studies of aluminized explosives: Chemical dynamics and apparent temperatures. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2012/01// VL - 111 IS - 1 M3 - Article SP - 014903 PB - American Institute of Physics SN - 00218979 AB - Time-resolved emission spectroscopy and high-speed photography were used to study the chemical dynamics and thermal history of aluminized hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) charges following detonation. The aluminized RDX charges contained 20 wt. % of either 30-70 nm or 16-26 µm Al particles. Non-aluminized RDX charges were also studied for comparison. Spectra collected from the aluminized charges exhibited Al and AlO emissions during the first ∼60 µs, followed by a broadband emission that evolved over two time scales: one in the early time, 0-200 µsec, and another on late time, 0.5-10 ms. The apparent temperatures of the early-time fireballs were obtained using barium atom thermometry and were found to be ∼2900 K for the RDX-only charges, ∼3600 K for the RDX-micron Al charges, and ∼4000 K for the RDX-nano Al charges. In both types of aluminized samples, once Al and AlO emissions ceased, the fireballs began to cool and approached the temperature obtained for the non-aluminized RDX charges. For aluminized charges, a late-time luminescence was also observed, with the intensity and duration dependent upon the size of the Al particles. Aluminum nanoparticles yielded a higher early-time temperature, but a less intense and shorter duration late-time emission, while micron-sized particles produced a lower early-time temperature, but a longer-lived and more intense late-time energy release. These results indicate that post-detonation Al combustion occurs in multiple stages during the evolution of the fireball. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXPLOSIVES KW - TIME-resolved spectroscopy KW - BARIUM KW - ALUMINUM KW - TEMPERATURE measurements KW - NANOPARTICLES KW - COMBUSTION KW - LUMINESCENCE N1 - Accession Number: 70338672; Lewis, W. K. 1 Rumchik, C. G. 2 Broughton, P. B. 2 Lindsay, C. M. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469, 2: U.S. Air Force Research Laboratory, Eglin AFB, Florida 32542,; Source Info: Jan2012, Vol. 111 Issue 1, p014903; Subject Term: EXPLOSIVES; Subject Term: TIME-resolved spectroscopy; Subject Term: BARIUM; Subject Term: ALUMINUM; Subject Term: TEMPERATURE measurements; Subject Term: NANOPARTICLES; Subject Term: COMBUSTION; Subject Term: LUMINESCENCE; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 6p; Illustrations: 1 Black and White Photograph, 3 Graphs; Document Type: Article L3 - 10.1063/1.3673602 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70338672&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shaw, Tyler AU - Finomore, Victor AU - Warm, Joel AU - Matthews, Gerald T1 - Effects of regular or irregular event schedules on cerebral hemovelocity during a sustained attention task. JO - Journal of Clinical & Experimental Neuropsychology JF - Journal of Clinical & Experimental Neuropsychology Y1 - 2012/01// VL - 34 IS - 1 M3 - Article SP - 57 EP - 66 PB - Taylor & Francis Ltd SN - 13803395 AB - Transcranial Doppler sonography was used to measure bilateral cerebral blood flow velocity during sustained attention task performance where the background event schedule occurred in a synchronous (temporally regular) or asynchronous (temporally irregular) manner. Perceptual sensitivity was greater in the synchronous case and declined over time in both conditions. Blood flow velocity was greater in the more difficult asynchronous condition and declined over time in both conditions in the right hemisphere, but the decline in blood flow velocity was limited to the asynchronous condition in the left hemisphere. The results are interpreted in terms of a resource model of sustained attention. [ABSTRACT FROM PUBLISHER] AB - Copyright of Journal of Clinical & Experimental Neuropsychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSCRANIAL Doppler ultrasonography KW - CEREBRAL circulation KW - BLOOD circulation KW - BLOOD flow KW - DOPPLER ultrasonography KW - Cerebral blood flow velocity KW - Event asynchrony KW - Event schedule KW - Transcranial doppler KW - Vigilance N1 - Accession Number: 70707978; Shaw, Tyler 1; Email Address: tshaw4@gmu.edu Finomore, Victor 2 Warm, Joel 2 Matthews, Gerald 3; Affiliation: 1: Human Factors and Applied Cognition, George Mason University, USA 2: Air Force Research Laboratory, Warfighter Interface Division, 711th Human Performance Wing, Wright-Patterson Air Force Base, USA 3: Psychology, University of Cincinnati, USA; Source Info: Jan2012, Vol. 34 Issue 1, p57; Subject Term: TRANSCRANIAL Doppler ultrasonography; Subject Term: CEREBRAL circulation; Subject Term: BLOOD circulation; Subject Term: BLOOD flow; Subject Term: DOPPLER ultrasonography; Author-Supplied Keyword: Cerebral blood flow velocity; Author-Supplied Keyword: Event asynchrony; Author-Supplied Keyword: Event schedule; Author-Supplied Keyword: Transcranial doppler; Author-Supplied Keyword: Vigilance; Number of Pages: 10p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1080/13803395.2011.621890 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70707978&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Houng, Huo-Shu H. AU - Garner, Jason AU - Zhou, Yanfei AU - Lyons, Arthur AU - Kuschner, Robert AU - Deye, Gregory AU - St. Clair, Kristina AU - Douce, Richard W. AU - Chicaiza, Wilson AU - Blair, Patrick J. AU - Myers, Christopher A. AU - Burke, Ronald L. AU - Sanchez, Jose L. AU - Williams, Maya AU - Halsey, Eric S. T1 - Emergent 2009 influenza A(H1N1) viruses containing HA D222N mutation associated with severe clinical outcomes in the Americas JO - Journal of Clinical Virology JF - Journal of Clinical Virology Y1 - 2012/01// VL - 53 IS - 1 M3 - Article SP - 12 EP - 15 SN - 13866532 AB - Abstract: Background: During the 2010–2011 influenza season, a small sub-group of 2009 influenza A(H1N1) viruses (hereafter referred to as 2009 A(H1N1)) emerged that was associated with more severe clinical outcomes in Ecuador and North America. Genetically, the haemagglutinin (HA) of this sub-clade was distinct from HAs found in viruses associated with severe outbreaks in 2010 from the United Kingdom and from other global specimens isolated earlier in the season. Objective: We report the emergence of a novel 2009 A(H1N1) variant possessing a re-emergent HA D222N mutation obtained from patients with severe respiratory illnesses and phylogenetically characterise these D222N mutants with other severe disease-causing variants clustering within a common emerging sub-clade. Case reports: In early 2011, three cases of 2009 A(H1N1) infection, two from Quito, Ecuador, and one from Washington, DC, USA, were complicated by severe pneumonia requiring mechanical ventilation, resulting in one fatality. These cases were selected due to the reported nature of the acute respiratory distress (ARD) that were captured in Department of Defence (DoD)-sponsored global influenza surveillance nets. Results: Genetically, the 2009 A(H1N1) strains isolated from two of the three severe cases carried a prominent amino acid change at position 222 (D222N) within the primary HA receptor binding site. Furthermore, these cases represent an emerging sub-clade of viruses defined by amino acid changes within HA: N31D, S162N, A186T and V272I. Phylogenetically, these viruses share a high degree of homology with strains associated with recent fatal cases in Chihuahua, Mexico. Discussion: Previously, enhanced virulence associated with the change, D222G, has been clinically linked to severe morbidity and mortality. Initial observations of the prevalence of a novel sub-clade of strains in the Americas suggest that viruses with a re-emergent D222N mutation may too correlate with severe clinical manifestations. These findings warrant heightened vigilance for emerging sub-clades of 2009 A(H1N1) and presumptive clinical implications. [Copyright &y& Elsevier] AB - Copyright of Journal of Clinical Virology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - H1N1 (2009) influenza KW - MUTATION (Biology) KW - OUTCOME assessment (Medical care) KW - EPIDEMICS KW - RESPIRATORY diseases KW - ADULT respiratory distress syndrome KW - ECUADOR KW - NORTH America KW - 2009 A(HINI) KW - D222N KW - HA receptor binding site KW - Influenza KW - Severe infections N1 - Accession Number: 69745407; Houng, Huo-Shu H. 1; Email Address: huo-shu.houng@amedd.army.mil Garner, Jason 2,3 Zhou, Yanfei 1 Lyons, Arthur 1 Kuschner, Robert 1 Deye, Gregory 1 St. Clair, Kristina 4 Douce, Richard W. 5 Chicaiza, Wilson 5 Blair, Patrick J. 6 Myers, Christopher A. 6 Burke, Ronald L. 7 Sanchez, Jose L. 3,7 Williams, Maya 8 Halsey, Eric S. 8; Affiliation: 1: Walter Reed Army Institute of Research, Silver Spring, MA 20910, USA 2: United States Air Force School of Aerospace Medicine, Brooks City-Base, TX 78235, USA 3: Henry M. Jackson Foundation for the Advancement of Military Medicine, Rockville, MA 20852, USA 4: National Naval Medical Center, Bethesda, MA 20889, USA 5: Hospital Vozandes Quito, Casilla 0691, Quito, Ecuador, USA 6: Navy Health Research Center, San Diego, CA 92106, USA 7: Armed Forces Health Surveillance Center, Global Emerging Infections Surveillance and Response System, Silver Spring, MA 20904, USA 8: United States Naval Medical Research Unit Six, Lima, Peru 20521-3230, USA; Source Info: Jan2012, Vol. 53 Issue 1, p12; Subject Term: H1N1 (2009) influenza; Subject Term: MUTATION (Biology); Subject Term: OUTCOME assessment (Medical care); Subject Term: EPIDEMICS; Subject Term: RESPIRATORY diseases; Subject Term: ADULT respiratory distress syndrome; Subject Term: ECUADOR; Subject Term: NORTH America; Author-Supplied Keyword: 2009 A(HINI); Author-Supplied Keyword: D222N; Author-Supplied Keyword: HA receptor binding site; Author-Supplied Keyword: Influenza; Author-Supplied Keyword: Severe infections; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jcv.2011.09.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69745407&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kwessi, Eddy AU - Alfonso, Paul AU - De Souza, Geraldo AU - Abebe, Asheber T1 - A Note on Multiplication and Composition Operators in Lorentz Spaces. JO - Journal of Function Spaces & Applications JF - Journal of Function Spaces & Applications Y1 - 2012/01// M3 - Article SP - 1 EP - 10 PB - Hindawi Publishing Corporation SN - 09726802 AB - we revisit the Lorentz spaces L(p,q) for p > 1, q > 0 defined by G. G. Lorentz in the nineteen fifties and we show how the atomic decomposition of the spaces L(p,1) obtained by De Souza in 2010 can be used to characterize the multiplication and composition operators on these spaces. These characterizations, though obtained from a completely different perspective, confirm the various results obtained by S. C. Arora, G. Datt and S. Verma in different variants of the Lorentz Spaces. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Function Spaces & Applications is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIPLICATION KW - COMPOSITION operators KW - LORENTZ spaces KW - DECOMPOSITION (Mathematics) KW - MATHEMATICAL analysis KW - MATHEMATICAL proofs N1 - Accession Number: 86882872; Kwessi, Eddy 1 Alfonso, Paul 2 De Souza, Geraldo 3; Email Address: desougs@auburn.edu Abebe, Asheber 3; Affiliation: 1: Trinity University, One Trinity Place, San Antonio, TX 78212, USA 2: US Air Force Academy, Colorado Springs, CO 80840, USA 3: Department of Mathematics and Statistics, Auburn University, 221 Parker Hall, Auburn, AL 36849, USA; Source Info: 2012, p1; Subject Term: MULTIPLICATION; Subject Term: COMPOSITION operators; Subject Term: LORENTZ spaces; Subject Term: DECOMPOSITION (Mathematics); Subject Term: MATHEMATICAL analysis; Subject Term: MATHEMATICAL proofs; Number of Pages: 10p; Document Type: Article L3 - 10.1155/2012/293613 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86882872&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lawver, Timothy I. T1 - Sexuality as Focus of Therapy: A Case Study in Attribution. JO - Journal of Gay & Lesbian Mental Health JF - Journal of Gay & Lesbian Mental Health Y1 - 2012/01//Jan-Mar2012 VL - 16 IS - 1 M3 - Article SP - 66 EP - 73 SN - 19359705 AB - The case of a patient who presented for treatment while the author was a psychiatry resident is discussed. Issues raised include treating a patient who presents her sexual orientation as the problem and how to help psychotherapists, especially trainees, become comfortable in treating gay and lesbian patients. [ABSTRACT FROM PUBLISHER] AB - Copyright of Journal of Gay & Lesbian Mental Health is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 70858497; Lawver, Timothy I. 1; Email Address: timlawver@gmail.com; Affiliation: 1: David Grant Medical Center, United States Air Force, USA; Source Info: Jan-Mar2012, Vol. 16 Issue 1, p66; Number of Pages: 8p; Document Type: Article L3 - 10.1080/19359705.2010.551040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70858497&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Naito, Clay AU - Hoemann, John AU - Beacraft, Mark AU - Bewick, Bryan T1 - Performance and Characterization of Shear Ties for Use in Insulated Precast Concrete Sandwich Wall Panels. JO - Journal of Structural Engineering JF - Journal of Structural Engineering Y1 - 2012/01// VL - 138 IS - 1 M3 - Article SP - 52 EP - 61 PB - American Society of Civil Engineers SN - 07339445 AB - Insulated precast concrete sandwich wall panels are commonly used for exterior cladding on building structures. The insulation is sandwiched between exterior and interior concrete layers to reduce the heating and cooling costs for the structure. The panels can be designed as composite, partially composite, or noncomposite. Shear ties are used to achieve these varying degrees of composite action between the interior and exterior concrete layers. A variety of shear ties are available for domestic construction. An experimental study was conducted to assess the relative strength and response of these commercially available ties. Fourteen different shear tie types were examined, the failure modes and responses were quantified, and simplified engineer level multilinear strength curves were developed for each connection. The test results indicate that shear ties used in sandwich wall construction have considerable variation in strength, stiffness, and deformability. The maximum shear strength of the discrete ties averaged 9.3 kN (2,100 lbf) with a minimum of 3.2 kN (730 lbf) and maximum of 18.4 kN (4,138 lbf). The ties exhibited elastic-brittle, elastic-plastic, and plastic-hardening responses. The results were used to develop trilinear constitutive relationships, which were used to approximate the flexural response of sandwich wall panels. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Structural Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WALL panels KW - SHEAR walls KW - PRECAST concrete KW - CONCRETE panels KW - STRUCTURAL engineering N1 - Accession Number: 71815160; Naito, Clay 1; Email Address: cjn3@lehigh.edu Hoemann, John 2 Beacraft, Mark 3 Bewick, Bryan 4; Affiliation: 1: Associate Professor, Dept. of Civil and Environmental Engineering, Lehigh Univ., Bethlehem, PA 18015 (corresponding author) 2: Research Civil Engineer, U.S. Army Engineer Research & Development Center, Vicksburg, MS 39180-6199; formerly, Air Force Research Laboratory Support Contractor, Applied Research Associates, Inc., Tyndall AFB, FL. 3: Graduate Student Researcher, Lehigh Univ., Bethlehem, PA 18015. 4: Research Civil Engineer, Air Force Research Laboratory, Tyndall AFB, Panama City FL, 32403.; Source Info: Jan2012, Vol. 138 Issue 1, p52; Subject Term: WALL panels; Subject Term: SHEAR walls; Subject Term: PRECAST concrete; Subject Term: CONCRETE panels; Subject Term: STRUCTURAL engineering; NAICS/Industry Codes: 238120 Structural Steel and Precast Concrete Contractors; NAICS/Industry Codes: 327330 Concrete pipe, brick and block manufacturing; NAICS/Industry Codes: 327390 Other Concrete Product Manufacturing; NAICS/Industry Codes: 321992 Prefabricated Wood Building Manufacturing; NAICS/Industry Codes: 238130 Framing Contractors; Number of Pages: 10p; Illustrations: 1 Color Photograph, 5 Diagrams, 4 Charts, 8 Graphs; Document Type: Article L3 - 10.1061/(ASCE)ST.1943-541X.0000430 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71815160&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Douglas, E.A. AU - Chang, C.Y. AU - Gila, B.P. AU - Holzworth, M.R. AU - Jones, K.S. AU - Liu, L. AU - Kim, Jinhyung AU - Jang, Soohwan AU - Via, G.D. AU - Ren, F. AU - Pearton, S.J. T1 - Investigation of the effect of temperature during off-state degradation of AlGaN/GaN High Electron Mobility Transistors JO - Microelectronics Reliability JF - Microelectronics Reliability Y1 - 2012/01// VL - 52 IS - 1 M3 - Article SP - 23 EP - 28 SN - 00262714 AB - Abstract: AlGaN/GaN High Electron Mobility Transistors were found to exhibit a negative temperature dependence of the critical voltage (V CRI) for irreversible device degradation to occur during bias-stressing. At elevated temperatures, devices exhibited similar gate leakage currents before and after biasing to V CRI, independent of both stress temperature and critical voltage. Though no crack formation was observed after stress, cross-sectional TEM indicates a breakdown in the oxide interfacial layer due to high reverse gate bias. [Copyright &y& Elsevier] AB - Copyright of Microelectronics Reliability is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH electron mobility transistors KW - TEMPERATURE effect KW - ALUMINUM compounds KW - GALLIUM nitride KW - ELECTRIC potential KW - TRANSMISSION electron microscopy N1 - Accession Number: 69999077; Douglas, E.A. 1; Email Address: rede0001@ufl.edu Chang, C.Y. 1 Gila, B.P. 1 Holzworth, M.R. 1 Jones, K.S. 1 Liu, L. 2 Kim, Jinhyung 3 Jang, Soohwan 3 Via, G.D. 4 Ren, F. 2 Pearton, S.J. 1; Affiliation: 1: Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, United States 2: Department of Chemical Engineering, University of Florida, Gainesville, FL 32611, United States 3: Department of Chemical Engineering, Dankook University, Yongin 448-701, Republic of Korea 4: US Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, United States; Source Info: Jan2012, Vol. 52 Issue 1, p23; Subject Term: HIGH electron mobility transistors; Subject Term: TEMPERATURE effect; Subject Term: ALUMINUM compounds; Subject Term: GALLIUM nitride; Subject Term: ELECTRIC potential; Subject Term: TRANSMISSION electron microscopy; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.microrel.2011.09.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69999077&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alarcon, Gene M. AU - Lyons, Joseph B. AU - Schlessman, Bradley R. AU - Barelka, Alexander J. T1 - Leadership and Coping Among Air Force Officers. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2012/01// VL - 24 IS - 1 M3 - Article SP - 29 EP - 47 PB - Taylor & Francis Ltd SN - 08995605 AB - The current study explored the relationship between coping and leadership in a military sample. Data were collected from Air Force officers attending a 6-week professional military education course focusing on leadership development. Correlation analyses illustrate that leadership styles are associated with different styles of coping. Hierarchical regression further demonstrates that transformational leaders use more positive reinterpretation and problem-focused coping strategies and less emotion-focused coping strategies. Transactional leaders utilize more problem-focused coping strategies. Results also demonstrated mixed results on the relationship between transformational leadership and positive reinterpretation. [ABSTRACT FROM PUBLISHER] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADJUSTMENT (Psychology) KW - ANALYSIS of variance KW - CORRELATION (Statistics) KW - LEADERSHIP KW - PSYCHOLOGICAL tests KW - MILITARY personnel -- Psychology KW - MULTIPLE regression analysis KW - UNITED States. Air Force N1 - Accession Number: 70094732; Alarcon, Gene M. 1; Email Address: gene.alarcon@wpafb.af.mil Lyons, Joseph B. 2 Schlessman, Bradley R. 1 Barelka, Alexander J. 1; Affiliation: 1: Air Force Research Laboratory, Wright Patterson Air Force Base, USA 2: Air Force Office of Scientific Research, USA; Source Info: 2012, Vol. 24 Issue 1, p29; Subject Term: ADJUSTMENT (Psychology); Subject Term: ANALYSIS of variance; Subject Term: CORRELATION (Statistics); Subject Term: LEADERSHIP; Subject Term: PSYCHOLOGICAL tests; Subject Term: MILITARY personnel -- Psychology; Subject Term: MULTIPLE regression analysis; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 19p; Document Type: Article L3 - 10.1080/08995605.2012.639674 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70094732&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vretenar, Natasa AU - Newell, Tim C. AU - Carson, Tyler AU - Peterson, Phillip AU - Lucas, Tim AU - Latham, William P. AU - Bostanci, Huseyin AU - Huddle-Lindauer, Jennifer J. AU - Saarloos, Benjamin A. AU - Rini, Dan T1 - Cryogenic ceramic 277 watt Yb:YAG thin-disk laser. JO - Optical Engineering JF - Optical Engineering Y1 - 2012/01// VL - 51 IS - 1 M3 - Article SP - 014201-1 EP - 014201-6 SN - 00913286 AB - A ceramic ytterbium:yttrium aluminum garnet (Yb:YAG) thindisk laser is investigated at 15°C (288 K) and also at 80 K, where it behaves as a four-level laser. We introduce a new two-phase spray cooling method to cool the Yb:YAG. One system relies on R134a refrigerant while the other uses liquid nitrogen (LN2). The use of two systems allows the same disk to be tested at the two temperatures. When the Yb:YAG is cooled from room to cryogenic temperatures, the lasing threshold drops from 155 W to near 10 W, while the slope efficiency increases from 54% to a 63%. A 277 W laser with 520 W of pump is demonstrated. We also model the thermal and structural properties at these two temperatures and estimate the beam quality. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER materials KW - OPTICAL materials KW - YTTERBIUM KW - SOLID state electronics KW - SPRAY cooling KW - diode-pumped lasers KW - laser materials KW - optical materials KW - solid-state lasers KW - ytterbium lasers N1 - Accession Number: 111109783; Vretenar, Natasa 1 Newell, Tim C. 2; Email Address: tim.newell@kirtland.af.mil Carson, Tyler 2 Peterson, Phillip 3 Lucas, Tim 3 Latham, William P. 2 Bostanci, Huseyin 4 Huddle-Lindauer, Jennifer J. 4 Saarloos, Benjamin A. 4 Rini, Dan 4; Affiliation: 1: University of New Mexico Center for High Technology Materials 1313 Goddard SE Albuquerque, New Mexico 87106 2: Air Force Research Laboratory Directed Energy Directorate 3550 Aberdeen Avenue SE Kirtland Air Force Base, New Mexico 87117 3: Boeing LTS Inc. P.O. Box 5670 MC RN-M1 Kirtland Air Force Base, New Mexico 87117 4: RINI Technologies 582 South Econ Circle Oviedo, Florida 32765; Source Info: Jan2012, Vol. 51 Issue 1, p014201-1; Subject Term: LASER materials; Subject Term: OPTICAL materials; Subject Term: YTTERBIUM; Subject Term: SOLID state electronics; Subject Term: SPRAY cooling; Author-Supplied Keyword: diode-pumped lasers; Author-Supplied Keyword: laser materials; Author-Supplied Keyword: optical materials; Author-Supplied Keyword: solid-state lasers; Author-Supplied Keyword: ytterbium lasers; Number of Pages: 6p; Document Type: Article L3 - 10.1117/1.OE.51.1.014201 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111109783&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - DiPietro, Robert S. AU - Manolakis, Dimitris G. AU - Lockwood, Ronald B. AU - Cooley, Thomas AU - Jacobson, John T1 - Hyperspectral matched filter with false-alarm mitigation. JO - Optical Engineering JF - Optical Engineering Y1 - 2012/01// VL - 51 IS - 1 M3 - Article SP - 016202-1 EP - 016202-7 SN - 00913286 AB - One of the fundamental challenges for a hyperspectral imaging surveillance system is the detection of sub-pixel objects in background clutter. The background surrounding the object, which acts as interference, provides the major obstacle to successful detection. One algorithm that is widely used in hyperspectral detection and successfully suppresses the background in many situations is the matched filter detector. However, the matched filter also produces false alarms in many situations. We use three simple and well-established concepts--the targetbackground replacement model, the matched filter, and Mahalanobis distance--to develop the matched filter with false alarm mitigation (MFFAM), a dual-threshold detector capable of eliminating many matched filter false alarms. We compare this algorithm to the mixture tuned matched filter (MTMF), a popular approach to matched filter false alarm mitigation found in the ENVI® software environment. The two algorithms are shown to produce nearly identical results using real hyperspectral data, but the MF-FAM is shown to be operationally, computationally, and theoretically simpler than the MTMF. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERSPECTRAL imaging systems KW - IMAGING systems KW - REMOTE sensing KW - PIXELS KW - DIGITAL images KW - ALGORITHMS KW - false alarm mitigation KW - hyperspectral imaging KW - matched filter KW - remote sensing KW - target detection N1 - Accession Number: 111109799; DiPietro, Robert S. 1; Email Address: r.dipietro@ll.mit.edu Manolakis, Dimitris G. 1 Lockwood, Ronald B. 1 Cooley, Thomas 2 Jacobson, John 3; Affiliation: 1: MIT Lincoln Laboratory 244 Wood Street Lexington, Massachusetts 02420 2: Space Vehicles Directorate Air Force Research Laboratory Kirtland AFB, New Mexico 87117 3: National Air and Space Intelligence Center Wright-Patterson AFB, Ohio 45433; Source Info: Jan2012, Vol. 51 Issue 1, p016202-1; Subject Term: HYPERSPECTRAL imaging systems; Subject Term: IMAGING systems; Subject Term: REMOTE sensing; Subject Term: PIXELS; Subject Term: DIGITAL images; Subject Term: ALGORITHMS; Author-Supplied Keyword: false alarm mitigation; Author-Supplied Keyword: hyperspectral imaging; Author-Supplied Keyword: matched filter; Author-Supplied Keyword: remote sensing; Author-Supplied Keyword: target detection; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1117/1.OE.51.1.016202 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111109799&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schmisseur, John D. AU - Erbland, Peter T1 - Introduction: Assessment of aerothermodynamic flight prediction tools through ground and flight experimentation JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences Y1 - 2012/01// VL - 48-49 M3 - Article SP - 2 EP - 7 SN - 03760421 AB - Abstract: This article provides an introduction and overview to the efforts of NATO Research and Technology Organization Task Group AVT-136, Assessment of Aerothermodynamic Flight Prediction Tools through Ground and Flight Experimentation. During the period of 2006–2010, AVT-136 coordinated international contributions to assess the state-of-the-art and research challenges for the prediction of critical aerothermodynamic flight phenomena based on the extrapolation of ground test and numerical simulation. To achieve this goal, efforts were organized around six scientific topic areas: (1) Noses and leading edges, (2) Shock Interactions and Control Surfaces, (3) Shock Layers and Radiation, (4) Boundary Layer Transition, (5) Gas–Surface Interactions, and (6) Base and Afterbody Flows. A key component of the AVT-136 strategy was comparison of state-of-the-art numerical simulations with data to be acquired from planned flight research programs. Although it was recognized from the onset of AVT-136 activities that reliance on flight research data yet to be collected posed a significant risk, the group concluded the substantial benefit to be derived from comparison of computational simulations with flight data warranted pursuit of such a program of work. Unfortunately, program delays and failures in the flight programs contributing to the AVT-136 effort prevented timely access to flight research data. Despite this setback, most of the scientific topic areas developed by the Task Group made significant progress in the assessment of current capabilities. Additionally, the activities of AVT-136 generated substantial interest within the international scientific research community and the work of the Task Group was prominently featured in a total of six invited sessions in European and American technical conferences. In addition to this overview, reviews of the state-of-the-art and research challenges identified by the six research thrusts of AVT-136 are also included in this special journal edition. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROTHERMODYNAMICS KW - COMPUTER simulation KW - LEADING edges (Aerodynamics) KW - RADIATION KW - BOUNDARY layer control KW - Aerothermodynamics KW - Computational fluid dynamics KW - Flight experiments KW - NORTH Atlantic Treaty Organization N1 - Accession Number: 71804464; Schmisseur, John D. 1; Email Address: John.Schmisseur@afosr.af.mil Erbland, Peter 2; Affiliation: 1: United States Air Force Office of Scientific Research 2: Defense Advanced Research Projects Agency; Source Info: Jan2012, Vol. 48-49, p2; Subject Term: AEROTHERMODYNAMICS; Subject Term: COMPUTER simulation; Subject Term: LEADING edges (Aerodynamics); Subject Term: RADIATION; Subject Term: BOUNDARY layer control; Author-Supplied Keyword: Aerothermodynamics; Author-Supplied Keyword: Computational fluid dynamics; Author-Supplied Keyword: Flight experiments; Company/Entity: NORTH Atlantic Treaty Organization; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.paerosci.2011.09.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71804464&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Knight, Doyle AU - Longo, José AU - Drikakis, Dimitris AU - Gaitonde, Datta AU - Lani, Andrea AU - Nompelis, Ioannis AU - Reimann, Bodo AU - Walpot, Louis T1 - Assessment of CFD capability for prediction of hypersonic shock interactions JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences Y1 - 2012/01// VL - 48-49 M3 - Article SP - 8 EP - 26 SN - 03760421 AB - Abstract: The aerothermodynamic loadings associated with shock wave boundary layer interactions (shock interactions) must be carefully considered in the design of hypersonic air vehicles. The capability of Computational Fluid Dynamics (CFD) software to accurately predict hypersonic shock wave laminar boundary layer interactions is examined. A series of independent computations performed by researchers in the US and Europe are presented for two generic configurations (double cone and cylinder) and compared with experimental data. The results illustrate the current capabilities and limitations of modern CFD methods for these flows. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTATIONAL fluid dynamics KW - AEROTHERMODYNAMICS KW - HYPERSONIC aerodynamics KW - BOUNDARY layer control KW - SHOCK (Mechanics) KW - COMPUTER software KW - Computational fluid dynamics KW - Hypersonics KW - Shock waves N1 - Accession Number: 71804465; Knight, Doyle 1; Email Address: doyleknight@gmail.com Longo, José 2 Drikakis, Dimitris 3 Gaitonde, Datta 4 Lani, Andrea 5 Nompelis, Ioannis 6 Reimann, Bodo 2 Walpot, Louis 7; Affiliation: 1: Rutgers - The State University of New Jersey, New Brunswick, NJ 08903, USA 2: German Aerospace Center DLR, 38108 Braunschweig, Germany 3: Aerospace Sciences Department, Cranfield University, Cranfield, Bedfordshire MK43 0AL, United Kingdom 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 5: Von Karman Institute for Fluid Dynamics, Brussels, Belgium 6: Department of Aerospace Engineering and Mechanics, University of Minnesota, Minneapolis, MN 55455, USA 7: Advanced Operations and Engineering Services, The Netherlands; Source Info: Jan2012, Vol. 48-49, p8; Subject Term: COMPUTATIONAL fluid dynamics; Subject Term: AEROTHERMODYNAMICS; Subject Term: HYPERSONIC aerodynamics; Subject Term: BOUNDARY layer control; Subject Term: SHOCK (Mechanics); Subject Term: COMPUTER software; Author-Supplied Keyword: Computational fluid dynamics; Author-Supplied Keyword: Hypersonics; Author-Supplied Keyword: Shock waves; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.paerosci.2011.10.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71804465&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ullrich, B. AU - Brown, G. J. T1 - Note: Phase sensitive detection of photoluminescence with Fourier transform spectroscopy. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2012/01// VL - 83 IS - 1 M3 - Article SP - 016105 PB - American Institute of Physics SN - 00346748 AB - Although known for more than twenty years, there is limited information in the literature regarding the experimental parameters of lock-in based phase sensitive emission detection in conjunction with Fourier spectrometers. For this technique - also known as double modulation spectroscopy - we present a guideline for parameter optimization by measuring the photoluminescence of InSb:Te at cryogenic temperatures. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FOURIER transform spectroscopy KW - SPECTRUM analysis KW - FOURIER transform optics KW - PHOTOLUMINESCENCE KW - LUMINESCENCE N1 - Accession Number: 70945913; Ullrich, B. 1,2 Brown, G. J. 2; Affiliation: 1: Ullrich Photonics LLC, Ohio, 43466, 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, Ohio 45433-7707,; Source Info: Jan2012, Vol. 83 Issue 1, p016105; Subject Term: FOURIER transform spectroscopy; Subject Term: SPECTRUM analysis; Subject Term: FOURIER transform optics; Subject Term: PHOTOLUMINESCENCE; Subject Term: LUMINESCENCE; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.3677332 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70945913&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abramson, Mark AU - Asaki, Thomas AU - Dennis, John AU - Magallanez, Raymond AU - Sottile, Matthew T1 - An efficient class of direct search surrogate methods for solving expensive optimization problems with CPU-time-related functions. JO - Structural & Multidisciplinary Optimization JF - Structural & Multidisciplinary Optimization Y1 - 2012/01// VL - 45 IS - 1 M3 - Article SP - 53 EP - 64 SN - 1615147X AB - In this paper, we characterize a new class of computationally expensive optimization problems and introduce an approach for solving them. In this class of problems, objective function values may be directly related to the computational time required to obtain them, so that, as the optimal solution is approached, the computational time required to evaluate the objective is significantly less than at points farther away from the solution. This is motivated by an application in which each objective function evaluation requires both a numerical fluid dynamics simulation and an image registration process, and the goal is to find the parameter values of a predetermined reference image by comparing the flow dynamics from the numerical simulation and the reference image through the image comparison process. In designing an approach to numerically solve the more general class of problems in an efficient way, we make use of surrogates based on CPU times of previously evaluated points, rather than their function values, all within the search step framework of mesh adaptive direct search algorithms. Because of the expected positive correlation between function values and their CPU times, a time cutoff parameter is added to the objective function evaluation to allow its termination during the comparison process if the computational time exceeds a specified threshold. The approach was tested using the NOMADm and DACE MATLAB® software packages, and results are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of Structural & Multidisciplinary Optimization is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL optimization KW - FLUID dynamics KW - FLUID mechanics KW - KRIGING KW - IMAGE registration KW - DIGITAL image processing KW - Black box optimization KW - Derivative-free optimization KW - Image registration KW - Kriging KW - Mesh Adaptive Direct Search (MADS) KW - Pattern search KW - Surrogate optimization N1 - Accession Number: 69698196; Abramson, Mark 1; Email Address: mark.a.abramson@boeing.com Asaki, Thomas 2; Email Address: tasaki@wsu.edu Dennis, John 3; Email Address: dennis@rice.edu Magallanez, Raymond 4; Email Address: raymond.magallanez@usafa.edu Sottile, Matthew 5; Email Address: matt@galois.com; Affiliation: 1: The Boeing Company, MC 7L-21 Seattle 98124-2207 USA 2: Department of Mathematics, Washington State University, Neill Hall 103 Pullman 99164-3113 USA 3: Department of Computational and Applied Mathematics, Rice University, 8419 42nd Avenue SW Seattle 98136-2360 USA 4: Department of Mathematical Sciences, United States Air Force Academy, Colorado Springs USA 5: Galois, Inc., 421 SW 6th Ave. Suite 300 Portland 97204 USA; Source Info: Jan2012, Vol. 45 Issue 1, p53; Subject Term: MATHEMATICAL optimization; Subject Term: FLUID dynamics; Subject Term: FLUID mechanics; Subject Term: KRIGING; Subject Term: IMAGE registration; Subject Term: DIGITAL image processing; Author-Supplied Keyword: Black box optimization; Author-Supplied Keyword: Derivative-free optimization; Author-Supplied Keyword: Image registration; Author-Supplied Keyword: Kriging; Author-Supplied Keyword: Mesh Adaptive Direct Search (MADS); Author-Supplied Keyword: Pattern search; Author-Supplied Keyword: Surrogate optimization; Number of Pages: 12p; Document Type: Article L3 - 10.1007/s00158-011-0658-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69698196&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Forgacs, Agnes L. AU - Kent, Michael N. AU - Makley, Meghan K. AU - Mets, Bryan AU - DelRaso, Nicholas AU - Jahns, Gary L. AU - Burgoon, Lyle D. AU - Zacharewski, Timothy R. AU - Reo, Nicholas V. T1 - Comparative Metabolomic and Genomic Analyses of TCDD-Elicited Metabolic Disruption in Mouse and Rat Liver. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 2012/01// VL - 125 IS - 1 M3 - Article SP - 41 EP - 55 SN - 10966080 AB - 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) elicits a broad spectrum of species-specific effects that have not yet been fully characterized. This study compares the temporal effects of TCDD on hepatic aqueous and lipid metabolite extracts from immature ovariectomized C57BL/6 mice and Sprague-Dawley rats using gas chromatography-mass spectrometry and nuclear magnetic resonance–based metabolomic approaches and integrates published gene expression data to identify species-specific pathways affected by treatment. TCDD elicited metabolite and gene expression changes associated with lipid metabolism and transport, choline metabolism, bile acid metabolism, glycolysis, and glycerophospholipid metabolism. Lipid metabolism is altered in mice resulting in increased hepatic triacylglycerol as well as mono- and polyunsaturated fatty acid (FA) levels. Mouse-specific changes included the induction of CD36 and other cell surface receptors as well as lipases- and FA-binding proteins consistent with hepatic triglyceride and FA accumulation. In contrast, there was minimal hepatic fat accumulation in rats and decreased CD36 expression. However, choline metabolism was altered in rats, as indicated by decreases in betaine and increases in phosphocholine with the concomitant induction of betaine-homocysteine methyltransferase and choline kinase gene expression. Results from these studies show that aryl hydrocarbon receptor–mediated differential gene expression could be linked to metabolite changes and species-specific alterations of biochemical pathways. [ABSTRACT FROM AUTHOR] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TETRACHLORODIBENZODIOXIN KW - COMPARATIVE studies KW - METABOLIC disorders KW - GAS chromatography KW - GENE expression KW - TRIGLYCERIDES KW - RATS as laboratory animals KW - dioxin KW - gene expression KW - liver KW - metabolomics N1 - Accession Number: 69899498; Forgacs, Agnes L. 1 Kent, Michael N. 2 Makley, Meghan K. 2 Mets, Bryan 1 DelRaso, Nicholas 3 Jahns, Gary L. 4 Burgoon, Lyle D. 1 Zacharewski, Timothy R. 1 Reo, Nicholas V. 2; Affiliation: 1: Department of Biochemistry and Molecular Biology, Center for Integrative Toxicology, Michigan State University, East Lansing, Michigan 48824 2: Department of Biochemistry and Molecular Biology, Boonshoft School of Medicine, Wright State University, Dayton, Ohio 45435 3: Air Force Research Laboratory Human Performance Wing, Wright-Patterson Air Force Base, Dayton, Ohio 45433 4: BAE Systems, San Diego, California 92127; Source Info: Jan2012, Vol. 125 Issue 1, p41; Subject Term: TETRACHLORODIBENZODIOXIN; Subject Term: COMPARATIVE studies; Subject Term: METABOLIC disorders; Subject Term: GAS chromatography; Subject Term: GENE expression; Subject Term: TRIGLYCERIDES; Subject Term: RATS as laboratory animals; Author-Supplied Keyword: dioxin; Author-Supplied Keyword: gene expression; Author-Supplied Keyword: liver; Author-Supplied Keyword: metabolomics; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 15p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69899498&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blagoveshchenskaya, N. AU - Borisova, T. AU - Rietveld, M. AU - Yeoman, T. AU - Wright, D. AU - Rother, M. AU - Lühr, H. AU - Mishin, E. AU - Roth, C. T1 - Results of Russian experiments dealing with the impact of powerful HF radiowaves on the high-latitude ionosphere using the EISCAT facilities. JO - Geomagnetism & Aeronomy JF - Geomagnetism & Aeronomy Y1 - 2011/12/30/ VL - 51 IS - 8 M3 - Article SP - 1109 EP - 1120 SN - 00167932 AB - We present the results of complex experiments dealing with the impact of powerful HF radiowaves on the high-latitude ionosphere using the European Incoherent Scatter Scientific Association (EISCAT) facilities. During the ionospheric F-region heating by powerful extraordinary (X-mode) polarized HF radiowaves under the conditions of heating near the critical f frequency f ≈ f F2 of the extraordinary wave of the F2-layer, we were first to detect the excitation of intense artificial small-scale ionospheric irregularities (ASIs), accompanied by electron temperature increases by approximately 50%. The results of coordinated satellite and ground-based observations of the powerful HF radiowave impact on the high-latitude ionosphere are considered. During ionospheric F-region heating by powerful HF radiowaves of ordinary polarization (O-mode) during evening hours, the phenomenon of ion outflow accompanied by electron temperature increases and thermal plasma expansion was revealed. Concurrent DMSP-F15 satellite measurements at a height of about 850 km indicate an O ion density increase. The CHAMP satellite observations identified ULF emissions at the modulation frequency (3 Hz) of the powerful HF radiowave, generated during modulated emissions of the powerful HF radiowave of O-polarization and accompanied by a substantial increase in the electron temperature and ASI generation. [ABSTRACT FROM AUTHOR] AB - Copyright of Geomagnetism & Aeronomy is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSPHERE KW - POLARIZATION (Electricity) KW - ELECTRON temperature KW - SOLAR activity KW - ELECTRONS N1 - Accession Number: 73960736; Blagoveshchenskaya, N. 1 Borisova, T. 1 Rietveld, M. 2 Yeoman, T. 3 Wright, D. 3 Rother, M. 4 Lühr, H. 4 Mishin, E. 5 Roth, C. 6; Affiliation: 1: Arctic and Antarctic Research Institute, St. Petersburg Russia 2: EISCAT Scientific Association, Ramfjordmoen Norway 3: University of Leicester, Leicester UK 4: GeoForschungsZentrum, Potsdam Germany 5: Air Force Research Laboratory, Hanscom USA 6: AER Inc., Lexington USA; Source Info: Dec2011, Vol. 51 Issue 8, p1109; Subject Term: IONOSPHERE; Subject Term: POLARIZATION (Electricity); Subject Term: ELECTRON temperature; Subject Term: SOLAR activity; Subject Term: ELECTRONS; Number of Pages: 12p; Document Type: Article L3 - 10.1134/S0016793211080160 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73960736&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H. J. AU - Brown, G. J. AU - Szmulowicz, F. AU - Elhamri, S. T1 - Design Effects on the Material Properties of InAs/GaSb Superlattices. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2011/12/28/ VL - 1416 IS - 1 M3 - Article SP - 155 EP - 157 PB - American Institute of Physics SN - 0094243X AB - InAs/GaSb superlattice (SL) materials are of great interest for infrared (IR) detection applications. There is tremendous design flexibility in these superlattices but every design change has an impact on the epitaxial growth conditions for optimized performance. In here, we discuss how a simple design change of InAs width affects the material properties. As the InAs layer thickness increases from 9 monolayers (MLs) to 16 MLs for a fixed GaSb layer thickness of 7 MLs, the spectral intensity measured by photoconductivity decreases by two orders of magnitude, while the calculated absorption strength decreases by less than a factor of two. Since the measured transport properties of mid-wavelength infrared (MWIR) and long-wavelength infrared (LWIR) SLs were very different-majority carriers in MWIR (LWIR) SLs were holes (electrons)-the large decrease in the photoresponse is due to changes in extrinsic material factors that affect these charge carrier properties. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - INDIUM arsenide KW - GALLIUM antimonide KW - INFRARED detectors KW - EPITAXY KW - THICKNESS measurement KW - PHOTOCONDUCTIVITY KW - ELECTRIC charge & distribution N1 - Accession Number: 70097360; Haugan, H. J. 1 Brown, G. J. 1 Szmulowicz, F. 1 Elhamri, S. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Department of Physics, University of Dayton, Dayton, Ohio 45469, USA; Source Info: 12/28/2011, Vol. 1416 Issue 1, p155; Subject Term: SUPERLATTICES; Subject Term: INDIUM arsenide; Subject Term: GALLIUM antimonide; Subject Term: INFRARED detectors; Subject Term: EPITAXY; Subject Term: THICKNESS measurement; Subject Term: PHOTOCONDUCTIVITY; Subject Term: ELECTRIC charge & distribution; Number of Pages: 3p; Document Type: Article L3 - 10.1063/1.3671721 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70097360&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gengler, Jamie J. AU - Hu, Jianjun AU - Jones, John G. AU - Voevodin, Andrey A. AU - Steidl, Petr AU - Vlček, Jaroslav T1 - Thermal conductivity of high-temperature Si–B–C–N thin films JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2011/12/25/ VL - 206 IS - 7 M3 - Article SP - 2030 EP - 2033 SN - 02578972 AB - Abstract: In this study, thermal transport was investigated for ceramic films with different silicon, boron, carbon, and nitrogen (Si–B–C–N) compositions. In order to investigate the effect of morphology on thermal barrier properties, the microstructure of these materials was varied from amorphous to nanocrystalline. Thermal conductivity trends of several ceramic thin films were characterized with a time-domain thermoreflectance (TDTR) technique. Samples containing two different Si–B–C–N chemical compositions were created by reactive magnetron sputtering and then subjected to annealing at temperatures up to 1400°C. The room temperature thermal conductivity of the samples prepared via a 50% Ar/50% N2 gas mixture remained constant near 1.3Wm−1 K−1, while samples prepared via a 75% Ar/25% N2 gas mixture exhibited an increase in the thermal conductivity of 2.2Wm−1 K−1 (or higher). X-ray diffraction data demonstrated that the former samples were amorphous, while the latter samples formed silicon nitride (Si3N4) crystals. The experiments reveal which Si–B–C–N film composition remains stable in the amorphous state at high temperatures, thereby retaining lower thermal transport properties. These material aspects are ideal for thermal barrier applications such as non-oxide based ceramic coatings for high-temperature protective systems of aircrafts, as well as surfaces of cutting tools and optical devices. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL conductivity KW - HIGH temperatures KW - SILICON alloys KW - THIN films KW - TRANSPORT theory (Mathematics) KW - MICROSTRUCTURE KW - THERMAL barrier coatings KW - AMORPHOUS substances KW - NANOCRYSTALS KW - Reactive magnetron sputtering KW - Thermal barrier coatings KW - Time-domain thermoreflectance KW - X-ray diffraction N1 - Accession Number: 67749849; Gengler, Jamie J. 1,2; Email Address: jamie.gengler.ctr@wpafb.af.mil Hu, Jianjun 1,3 Jones, John G. 1 Voevodin, Andrey A. 1 Steidl, Petr 4 Vlček, Jaroslav 4; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Thermal Sciences and Materials Branch, 2941 Hobson Way, Wright-Patterson Air Force Base, OH 45433, United States 2: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, OH 45431, United States 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, United States 4: Department of Physics, University of West Bohemia, Univerzitní 22, 306 14 Plzeň, Czech Republic; Source Info: Dec2011, Vol. 206 Issue 7, p2030; Subject Term: THERMAL conductivity; Subject Term: HIGH temperatures; Subject Term: SILICON alloys; Subject Term: THIN films; Subject Term: TRANSPORT theory (Mathematics); Subject Term: MICROSTRUCTURE; Subject Term: THERMAL barrier coatings; Subject Term: AMORPHOUS substances; Subject Term: NANOCRYSTALS; Author-Supplied Keyword: Reactive magnetron sputtering; Author-Supplied Keyword: Thermal barrier coatings; Author-Supplied Keyword: Time-domain thermoreflectance; Author-Supplied Keyword: X-ray diffraction; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.surfcoat.2011.07.058 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67749849&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ramirez, Sean M. AU - Diaz, Yvonne J. AU - Campos, Raymond AU - Stone, Rebecca L. AU - Haddad, Timothy S. AU - Mabry, Joseph M. T1 - Incompletely Condensed Fluoroalkyl Silsesquioxanes and Derivatives: Precursors for Low Surface Energy Materials. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2011/12/21/ VL - 133 IS - 50 M3 - Article SP - 20084 EP - 20087 SN - 00027863 AB - A novel synthetic method was developed for the controlled functionalization of fluorinated polyhedral oligomeric silsesquioxanes (F-POSS), which are useful as low surface energy materials for superhydrophobic and superoleophobic materials. Utilizing triflic acid, open-cage compounds were created and then reacted with a variety of dichlorosilanes to produce functional F-POSS structures possessing alkyl-, aryl-, and acrylate-based moieties. The crystal structure for an endo,endo-disilanol F-POSS compound was determined by single-crystal X-ray diffraction. The chemical structures were confirmed using multinuclear NMR spectroscopy (¹H, 13C, 19F, and 29Si), FT-IR, and combustion analysis. Dynamic contact angle measurements of these compounds were taken with water and hexadecane. These novel structures were found to possess excellent wetting-resistant behavior, similar to that of the parent F-POSS compound. They are the first well-defined fluorinated nano-building blocks with a controlled level of reactive functionality for the development of new superhydrophobic and superoleophobic materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL engineering KW - SURFACE active agents KW - HYDROPHOBIC compounds KW - FLUOROPOLYMERS KW - SURFACE chemistry N1 - Accession Number: 70200750; Ramirez, Sean M. 1 Diaz, Yvonne J. 2 Campos, Raymond 1 Stone, Rebecca L. 2 Haddad, Timothy S. 1 Mabry, Joseph M. 2; Email Address: joseph.mabry@edwards.af.mil; Affiliation: 1: ERC Inc. 2: Air Force Research laboratory, Space & Missile Propulsion Division, Edwards Air Force Base, California 93524-7480, United States; Source Info: 12/21/2011, Vol. 133 Issue 50, p20084; Subject Term: CHEMICAL engineering; Subject Term: SURFACE active agents; Subject Term: HYDROPHOBIC compounds; Subject Term: FLUOROPOLYMERS; Subject Term: SURFACE chemistry; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1021/ja208506v UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70200750&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shahzad, Monas AU - Medhi, Gautam AU - Peale, Robert E. AU - Buchwald, Walter R. AU - Cleary, Justin W. AU - Soref, Richard AU - Boreman, Glenn D. AU - Edwards, Oliver T1 - Infrared surface plasmons on heavily doped silicon. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/12/15/ VL - 110 IS - 12 M3 - Article SP - 123105 PB - American Institute of Physics SN - 00218979 AB - Conductors with infrared plasma frequencies are potentially useful hosts of surface plasmon polaritons (SPP) with sub-wavelength mode confinement for sensing applications. A challenge is to identify such a conductor that also has sharp SPP excitation resonances and the capability to be functionalized for biosensor applications. In this paper we present experimental and theoretical investigations of IR SPPs on doped silicon and their excitation resonances on doped-silicon gratings. The measured complex permittivity spectra for p-type silicon with carrier concentration 6×1019 and 1×1020 cm-3 show that these materials should support SPPs beyond 11 and 6 μm wavelengths, respectively. The permittivity spectra were used to calculate SPP mode heights above the silicon surface and SPP propagation lengths. Reasonable merit criteria applied to these quantities suggest that only the heaviest doped material has sensor potential, and then mainly within the wavelength range 6 to 10 μm. Photon-to-plasmon coupling resonances, a necessary condition for sensing, were demonstrated near 10 μm wavelength for this material. The shape and position of these resonances agree well with simple analytic calculations based on the theory of Hessel and Oliner (1965). [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMONS (Physics) KW - DOPING agents (Chemistry) KW - SILICON KW - POLARITONS KW - BIOSENSORS KW - PERMITTIVITY KW - PHOTONS N1 - Accession Number: 70097447; Shahzad, Monas 1 Medhi, Gautam 1 Peale, Robert E. 1 Buchwald, Walter R. 2 Cleary, Justin W. 3 Soref, Richard 4 Boreman, Glenn D. 5 Edwards, Oliver 6; Affiliation: 1: Department of Physics, University of Central Florida, Orlando, Florida 32816, 2: Solid State Scientific Corporation, 27-2 Wright Road, Hollis, New Hampshire 03049, 3: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, 4: Department of Physics, University of Massachusetts, Boston, Massachusetts 02125, 5: Department of Physics and Optical Science, University of North Carolina at Charlotte, Charlotte, North Carolina 28223, 6: Zyberwear Inc., 2650 Florence St., Orlando, Florida 34818,; Source Info: Dec2011, Vol. 110 Issue 12, p123105; Subject Term: PLASMONS (Physics); Subject Term: DOPING agents (Chemistry); Subject Term: SILICON; Subject Term: POLARITONS; Subject Term: BIOSENSORS; Subject Term: PERMITTIVITY; Subject Term: PHOTONS; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 6p; Illustrations: 1 Diagram, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.3672738 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70097447&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Check, Michael H. AU - Dudis, Douglas S. AU - Ferguson, John B. AU - Gengler, Jamie J. AU - Seibel, Harry A. AU - Elliott, Bevan C. AU - Votaw, Zachary S. AU - Voevodin, Andrey A. T1 - Synthesis of zinc fulleride (ZnxC60) thin films with ultra-low thermal conductivity. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/12/15/ VL - 110 IS - 12 M3 - Article SP - 124320 PB - American Institute of Physics SN - 00218979 AB - The structure and physical properties of doped fullerene materials were investigated for their interesting thermal properties. The synthesis and thermal properties of ZnxC60 thin films are reported. Thin films of ZnxC60 were found to have an exceedingly low thermal conductivity of 0.13 Wm-1 K-1. Differential scanning calorimetry results suggested that a temperature of 357 °C is needed in order to fully intercalate the Zn with the C60. Both charge transfer and covalent bonding (between Zn and C60) should be considered when attempting to understand the Raman spectra observed. Moreover, the ZnxC60 thin films created represent an interesting class of materials that could find use in several thermal applications. Furthermore, in the present case, the exceptionally low thermal conductivity is accompanied by a substantial increase in the electrical conductivity, suggesting interesting thermal and electrical transport. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC KW - THIN films KW - THERMAL conductivity KW - FULLERENES KW - CALORIMETRY KW - CHARGE transfer KW - RAMAN effect N1 - Accession Number: 70097441; Check, Michael H. 1,2 Dudis, Douglas S. 2 Ferguson, John B. 2 Gengler, Jamie J. 2,3 Seibel, Harry A. 1,2 Elliott, Bevan C. 2,4 Votaw, Zachary S. 2,5 Voevodin, Andrey A. 2; Affiliation: 1: Thermal Sciences and Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, 2941 Hobson Way, Wright-Patterson AFB, Ohio 45433, 2: Universal Technology Corporation, 1270 North Fairfield Road, Dayton, Ohio 45432, 3: Spectral Energies, LLC, 5100 Springfield St., Suite 301, Dayton, Ohio 45431, 4: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469, 5: SOCHE, 3155 Research Blvd., Suite 204, Dayton, Ohio 45420,; Source Info: Dec2011, Vol. 110 Issue 12, p124320; Subject Term: ZINC; Subject Term: THIN films; Subject Term: THERMAL conductivity; Subject Term: FULLERENES; Subject Term: CALORIMETRY; Subject Term: CHARGE transfer; Subject Term: RAMAN effect; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 5p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.3671423 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70097441&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Goza, Andres J. AU - Tritchler, Stephanie E. AU - Bliss, David F. AU - Houchens, Brent C. T1 - Thermodynamic modeling of bulk ternary alloy crystal growth: Comparison of experiments and theory for GaInSb alloys JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2011/12/15/ VL - 337 IS - 1 M3 - Article SP - 60 EP - 64 SN - 00220248 AB - Abstract: Ternary alloy GaInSb crystals are grown from a melt in the horizontal Bridgman configuration for high (70%) and low (30%) Ga compositions. Each composition is compared to ideal and regular solution model predictions. Good agreement is found between the regular solution model and experimental observations. However, this agreement is quite sensitive to the starting proportions of the constituent elements. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMODYNAMICS KW - TERNARY alloys KW - CRYSTAL growth KW - PREDICTION models KW - SOLUTION (Chemistry) KW - GALLIUM compounds KW - A1. Growth models KW - A1. Segregation KW - A2. Growth from melt KW - B1. Antimonides KW - B2. Semiconducting ternary compounds N1 - Accession Number: 67326408; Goza, Andres J. 1 Tritchler, Stephanie E. 1 Bliss, David F. 2 Houchens, Brent C. 1; Email Address: houchens@rice.edu; Affiliation: 1: Rice University, Houston, TX, USA 2: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA, USA; Source Info: Dec2011, Vol. 337 Issue 1, p60; Subject Term: THERMODYNAMICS; Subject Term: TERNARY alloys; Subject Term: CRYSTAL growth; Subject Term: PREDICTION models; Subject Term: SOLUTION (Chemistry); Subject Term: GALLIUM compounds; Author-Supplied Keyword: A1. Growth models; Author-Supplied Keyword: A1. Segregation; Author-Supplied Keyword: A2. Growth from melt; Author-Supplied Keyword: B1. Antimonides; Author-Supplied Keyword: B2. Semiconducting ternary compounds; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jcrysgro.2011.09.056 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67326408&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miracle, D.B. AU - Wilks, G.B. AU - Dahlman, A.G. AU - Dahlman, J.E. T1 - The strength of chemical bonds in solids and liquids JO - Acta Materialia JF - Acta Materialia Y1 - 2011/12// VL - 59 IS - 20 M3 - Article SP - 7840 EP - 7854 SN - 13596454 AB - Abstract: The strengths of chemical bonds between atoms are accurately measured and widely available for molecular gases, but an established method of quantifying bond strengths in liquids and solids is not available, and the strengths of these bonds are generally unknown. A new term, the condensed bond enthalpy (CBE), is proposed to specify the energy contained in bonds between atoms in condensed states. An approach to estimating these bond strengths is developed by combining classical thermodynamic concepts with measured heats of formation and crystallographic data. A nearly complete set of elemental CBE and a selection of CBE between unlike metal atom pairs are produced using the method described here. Elemental bond enthalpies generally range from about −0.1eV to −1.3eV, and bonds between unlike atoms studied here range from about −0.6eV to −1.1eV. The validity and utility of these values are demonstrated by using them to estimate enthalpies of fusion and surface energies in elemental metals and heats of formation of ternary intermetallic compounds. Predicted enthalpies are generally within experimental errors for all three comparisons. Bond enthalpies are found to have a mild but systematic dependence on chemistry and atomic structure in some of the binary systems studied here, but are essentially independent of the atomic environment in other systems. The uncertainty in εij values (±4%) is small enough to enable classical approximations, but is inadequate when higher precision is needed. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL bonds KW - ENTHALPY KW - CRYSTALLOGRAPHY KW - INTERMETALLIC compounds KW - BINARY metallic systems KW - SOLIDS KW - LIQUIDS KW - Bond energy KW - Metals and alloys KW - Thermodynamics N1 - Accession Number: 67141892; Miracle, D.B. 1; Email Address: daniel.miracle@wpafb.af.mil Wilks, G.B. 1,2 Dahlman, A.G. 1,3 Dahlman, J.E. 1,3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA 2: General Dynamics Corporation, Dayton, OH 45431, USA 3: Southwestern Ohio Council for Higher Education (SOCHE), Dayton, OH 45420, USA; Source Info: Dec2011, Vol. 59 Issue 20, p7840; Subject Term: CHEMICAL bonds; Subject Term: ENTHALPY; Subject Term: CRYSTALLOGRAPHY; Subject Term: INTERMETALLIC compounds; Subject Term: BINARY metallic systems; Subject Term: SOLIDS; Subject Term: LIQUIDS; Author-Supplied Keyword: Bond energy; Author-Supplied Keyword: Metals and alloys; Author-Supplied Keyword: Thermodynamics; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.actamat.2011.09.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67141892&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jung-Sun Choi AU - Liangyu Zhao AU - Gyung-Jin Park AU - Agrawal, Sunil K. AU - Kolonay, Raymond M. T1 - Enhancement of a Flapping Wing Using Path and Dynamic Topology Optimization. JO - AIAA Journal JF - AIAA Journal Y1 - 2011/12// VL - 49 IS - 12 M3 - Article SP - 2616 EP - 2626 SN - 00011452 AB - The flapping wing of a micro air vehicle is optimized to enhance performance while some rigidity is kept with a specific mass. A work flow for the design of the flapping wing is defined. The performances to be enhanced are thrust coefficient and propulsive efficiency. The flapping kinematics of the flapping wing is determined by solving a path optimization problem that maximizes the performances. The optimization process is carried out based on a well-defined surrogate model. The surrogate model is made from the results of two-dimensional fluid dynamic analysis. The kriging method is employed to establish the surrogate model and a genetic algorithm is used for the multi-objective function problem. Dynamic topology optimization is performed to find the distribution of reinforcement. Certain rigidity can be kept by the results of topology optimization. A dynamic topology optimization method is developed by modification of the equivalent static loads method for nonlinear static response structural optimization. Three-dimensional computational fluid dynamic analysis is performed based on the optimum values of the path optimization to evaluate the external loads for the topology optimization process. The process of the defined work flow is materialized by interfacing various software systems. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUID dynamics KW - KINEMATICS KW - FLUID mechanics KW - GENETIC algorithms KW - MATHEMATICAL optimization N1 - Accession Number: 69599276; Jung-Sun Choi 1 Liangyu Zhao 1 Gyung-Jin Park 2; Email Address: gpark@hanyang.ac.kr Agrawal, Sunil K. 3 Kolonay, Raymond M. 4; Affiliation: 1: Hanyang University, Seoul 133-791, Republic of Korea 2: Hanyang University, Ansan City 426-791, Republic of Korea 3: University of Delaware, Newark, Delaware 19716 4: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: Dec2011, Vol. 49 Issue 12, p2616; Subject Term: FLUID dynamics; Subject Term: KINEMATICS; Subject Term: FLUID mechanics; Subject Term: GENETIC algorithms; Subject Term: MATHEMATICAL optimization; Number of Pages: 11p; Document Type: Article L3 - 10.2514/1.J050834 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69599276&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Modinger, John H. T1 - Harnessing the Heavens: National Defense through Space. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2011///Winter2011 VL - 25 IS - 4 M3 - Book Review SP - 115 EP - 117 PB - Superintendent of Documents SN - 1555385X AB - The article reviews the book "Harnessing the Heavens: National Defense Through Space," edited by Paul G. Gillespie and Grant T. Weller. KW - MILITARY readiness KW - NONFICTION KW - WELLER, Grant T. KW - GILLESPIE, Paul G. KW - HARNESSING the Heavens: National Defense Through Space (Book) N1 - Accession Number: 71342705; Modinger, John H. 1; Affiliation: 1: United States Air Force Academy; Source Info: Winter2011, Vol. 25 Issue 4, p115; Subject Term: MILITARY readiness; Subject Term: NONFICTION; Reviews & Products: HARNESSING the Heavens: National Defense Through Space (Book); People: WELLER, Grant T.; People: GILLESPIE, Paul G.; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71342705&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Krier, Michael AU - Kaltenbach, Tonya AU - McQuaid, Kenneth AU - Soetikno, Roy T1 - Potential Use of Telemedicine to Provide Outpatient Care for Inflammatory Bowel Disease. JO - American Journal of Gastroenterology JF - American Journal of Gastroenterology Y1 - 2011/12// VL - 106 IS - 12 M3 - Article SP - 2063 EP - 2067 SN - 00029270 AB - OBJECTIVES:Patients with inflammatory bowel disease (IBD) often experience barriers to subspecialty access. We applied telemedicine, using a new computerized system called Collaborative Imaging, to resolve these barriers. We studied patients' experience and satisfaction, and clinic throughput.METHODS:We performed a prospective randomized controlled pilot study at a Veterans Affairs hospital, assigning patients into two groups: telemedicine encounter, with the IBD specialist remotely located, and standard encounter. We assessed patient experience and measured differences in satisfaction as well as clinic metrics such as appointment duration, wait time, and throughput.RESULTS:We enrolled 34 patients with Crohn's disease and ulcerative colitis who underwent 57 encounters in 9 months. Patients were mostly Caucasian men, with a mean age of 61 years. The two groups similarly rated as excellent their clinic experience and the major clinical satisfaction indices of attention to patient concerns, bedside manner, and perceived skill level of the doctor. The total clinic duration, wait time, and median number of patients per clinic were also similar. The fellow and subspecialist highly rated the technical and informational quality of the telemedicine sessions.CONCLUSIONS:IBD outpatient service may be delivered via a novel telemedicine system. In this pilot study, we observed a high level of patient satisfaction similar to that achieved with a direct clinical encounter. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Gastroenterology is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TELECOMMUNICATION in medicine KW - INFLAMMATORY bowel diseases KW - CROHN'S disease KW - OUTPATIENT medical care KW - ULCERATIVE colitis N1 - Accession Number: 67652839; Krier, Michael 1 Kaltenbach, Tonya 2 McQuaid, Kenneth 3 Soetikno, Roy 2; Affiliation: 1: 1] Veterans Affairs Palo Alto, Stanford University School of Medicine, Palo Alto, California, USA [2] Wilford Hall Ambulatory Surgical Center, United States Air Force, San Antonio, Texas, USA 2: Veterans Affairs Palo Alto, Stanford University School of Medicine, Palo Alto, California, USA 3: Veterans Affairs San Francisco, University of California, San Francisco, California, USA; Source Info: Dec2011, Vol. 106 Issue 12, p2063; Subject Term: TELECOMMUNICATION in medicine; Subject Term: INFLAMMATORY bowel diseases; Subject Term: CROHN'S disease; Subject Term: OUTPATIENT medical care; Subject Term: ULCERATIVE colitis; NAICS/Industry Codes: 621494 Community health centres; NAICS/Industry Codes: 621498 All Other Outpatient Care Centers; NAICS/Industry Codes: 621499 All other out-patient care centres; Number of Pages: 5p; Illustrations: 2 Color Photographs, 2 Charts, 1 Graph; Document Type: Article L3 - 10.1038/ajg.2011.329 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67652839&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rubovitch, Vardit AU - Ten-Bosch, Meital AU - Zohar, Ofer AU - Harrison, Catherine R. AU - Tempel-Brami, Catherine AU - Stein, Elliot AU - Hoffer, Barry J. AU - Balaban, Carey D. AU - Schreiber, Shaul AU - Chiu, Wen-Ta AU - Pick, Chaim G. T1 - A mouse model of blast-induced mild traumatic brain injury JO - Experimental Neurology JF - Experimental Neurology Y1 - 2011/12// VL - 232 IS - 2 M3 - Article SP - 280 EP - 289 SN - 00144886 AB - Abstract: Improvised explosive devices (IEDs) are one of the main causes for casualties among civilians and military personnel in the present war against terror. Mild traumatic brain injury from IEDs induces various degrees of cognitive, emotional and behavioral disturbances but knowledge of the exact brain pathophysiology following exposure to blast is poorly understood. The study was aimed at establishing a murine model for a mild BI-TBI that isolates low-level blast pressure effects to the brain without systemic injuries. An open-field explosives detonation was used to replicate, as closely as possible, low-level blast trauma in the battlefield or at a terror-attack site. No alterations in basic neurological assessment or brain gross pathology were found acutely in the blast-exposed mice. At 7days post blast, cognitive and behavioral tests revealed significantly decreased performance at both 4 and 7m distance from the blast (5.5 and 2.5PSI, respectively). At 30days post-blast, clear differences were found in animals at both distances in the object recognition test, and in the 7m group in the Y maze test. Using MRI, T1 weighted images showed an increased BBB permeability 1month post-blast. DTI analysis showed an increase in fractional anisotropy (FA) and a decrease in radial diffusivity. These changes correlated with sites of up-regulation of manganese superoxide dismutase 2 in neurons and CXC-motif chemokine receptor 3 around blood vessels in fiber tracts. These results may represent brain axonal and myelin abnormalities. Cellular and biochemical studies are underway in order to further correlate the blast-induced cognitive and behavioral changes and to identify possible underlying mechanisms that may help develop treatment- and neuroprotective modalities. [Copyright &y& Elsevier] AB - Copyright of Experimental Neurology is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BRAIN -- Wounds & injuries KW - IMPROVISED explosive devices KW - MILITARY personnel KW - WAR casualties KW - PATHOLOGICAL physiology KW - COGNITION disorders KW - BEHAVIOR disorders KW - MICE as laboratory animals KW - Behavior KW - Low level blast-induced brain injury KW - MRI N1 - Accession Number: 66803249; Rubovitch, Vardit 1 Ten-Bosch, Meital 1 Zohar, Ofer 2 Harrison, Catherine R. 3 Tempel-Brami, Catherine 4 Stein, Elliot 5 Hoffer, Barry J. 5; Email Address: barry.hoffer@nih.gov Balaban, Carey D. 6,7 Schreiber, Shaul 8 Chiu, Wen-Ta 9 Pick, Chaim G. 1; Affiliation: 1: Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel 2: Blanchette Rockefeller Neurosciences Institute, at the Johns Hopkins University Montgomery County Campus, 9601 Medical Center Drive, Rockville MD 20850, USA 3: Air Force Research Laboratory, 711th HPW/RHPA, Wright Patterson AFB, OH 45433, USA 4: Alfredo Federico Strauss Center for Computational Neuro-Imaging, Tel Aviv University, Tel-Aviv University, Tel-Aviv 69978, Israel 5: National Institute on Drug Abuse, IRP, 251 Bayview Boulevard, Baltimore, MD 21224, USA 6: Department of Otolaryngology 107 Eye & Ear Institute, 203 Lothrop Street, Pittsburgh, PA 15213, USA 7: Departments of Neurobiology, Communication Sciences & Disorders, and Bioengineering 107 Eye & Ear Institute, 203 Lothrop Street, Pittsburgh, PA 15213 USA 8: Department of Psychiatry, Tel Aviv Sourasky Medical Center and Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 64239, Israel 9: Department of Neurosurgery, Taipei Medical University, 250 Wu-Hsing Street, Taipei, Taiwan; Source Info: Dec2011, Vol. 232 Issue 2, p280; Subject Term: BRAIN -- Wounds & injuries; Subject Term: IMPROVISED explosive devices; Subject Term: MILITARY personnel; Subject Term: WAR casualties; Subject Term: PATHOLOGICAL physiology; Subject Term: COGNITION disorders; Subject Term: BEHAVIOR disorders; Subject Term: MICE as laboratory animals; Author-Supplied Keyword: Behavior; Author-Supplied Keyword: Low level blast-induced brain injury; Author-Supplied Keyword: MRI; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.expneurol.2011.09.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66803249&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zeng, Zhiwei AU - Deng, Yiming AU - Liu, Xin AU - Udpa, Lalita AU - Udpa, Satish S. AU - Koltenbah, Benjamin E. C. AU - Bossi, Richard H. AU - Steffes, Gary T1 - EC-GMR Data Analysis for Inspection of Multilayer Airframe Structures. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2011/12// VL - 47 IS - 12 M3 - Article SP - 4745 EP - 4752 SN - 00189464 AB - Eddy-current testing (ECT) is widely used in inspection of multilayer aircraft skin structures for the detection of cracks under fasteners (CUF). Detection of deep hidden CUF poses a major challenge in traditional ECT techniques largely because the weak eddy-current signal due to a subsurface crack is dominated by the strong signal from the aluminum or steel fastener. Giant magnetoresistive (GMR) sensors are finding increasing applications in directly measuring weak magnetic fields associated with induced eddy currents. The measured flux image at a fastener site is in general symmetric and an asymmetry is introduced by the presence of a subsurface crack, which is used for defect detection. This paper presents novel methods that employ the resident phase information, for improving detection probability of GMR signal analysis. Using computational model, the effectiveness of the proposed methods for enhancing detection of CUF is investigated. Results demonstrating the potential of these techniques for detection of second layer CUF are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETORESISTANCE KW - EDDY current testing KW - FASTENERS KW - MAGNETIC fields KW - FRACTURE mechanics KW - SYMMETRY (Mathematics) KW - AIRPLANES -- Motors KW - DATA analysis KW - Aircraft KW - Complex trajectory KW - Current measurement KW - detection angle KW - eddy current KW - Eddy currents KW - Fasteners KW - giant magnetoresistive sensor KW - Magnetic sensors KW - multilayer aircraft skin structure KW - nondestructive evaluation KW - Steel N1 - Accession Number: 67487700; Zeng, Zhiwei 1 Deng, Yiming 2 Liu, Xin 3 Udpa, Lalita 4 Udpa, Satish S. 4 Koltenbah, Benjamin E. C. 5 Bossi, Richard H. 6 Steffes, Gary 7; Affiliation: 1: $^{1}$Department of Aeronautics,, Xiamen University,, Xiamen, Fujian, China 2: $^{2}$University of Colorado Denver,, Denver,, CO, USA 3: $^{3}$ Michigan State University,, East Lansing,, MI, USA 4: Michigan State University, East Lansing, MI, USA 5: $^{4}$ Boeing Research & Technology,, Seattle,, WA, USA 6: Boeing Research & Technology, Seattle, WA, USA 7: Nondestructive Evaluation Research Branch,, $^{5}$Air Force Research Laboratory,, USA; Source Info: Dec2011, Vol. 47 Issue 12, p4745; Subject Term: MAGNETORESISTANCE; Subject Term: EDDY current testing; Subject Term: FASTENERS; Subject Term: MAGNETIC fields; Subject Term: FRACTURE mechanics; Subject Term: SYMMETRY (Mathematics); Subject Term: AIRPLANES -- Motors; Subject Term: DATA analysis; Author-Supplied Keyword: Aircraft; Author-Supplied Keyword: Complex trajectory; Author-Supplied Keyword: Current measurement; Author-Supplied Keyword: detection angle; Author-Supplied Keyword: eddy current; Author-Supplied Keyword: Eddy currents; Author-Supplied Keyword: Fasteners; Author-Supplied Keyword: giant magnetoresistive sensor; Author-Supplied Keyword: Magnetic sensors; Author-Supplied Keyword: multilayer aircraft skin structure; Author-Supplied Keyword: nondestructive evaluation; Author-Supplied Keyword: Steel; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 332722 Bolt, Nut, Screw, Rivet, and Washer Manufacturing; NAICS/Industry Codes: 339990 All other miscellaneous manufacturing; NAICS/Industry Codes: 339993 Fastener, Button, Needle, and Pin Manufacturing; NAICS/Industry Codes: 416330 Hardware merchant wholesalers; NAICS/Industry Codes: 423710 Hardware Merchant Wholesalers; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TMAG.2011.2160553 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67487700&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rizzetta, Donald P. AU - Visbal, Miguel R. T1 - Exploration of plasma-based control for low-Reynolds number airfoil/gust interaction. JO - International Journal of Computational Fluid Dynamics JF - International Journal of Computational Fluid Dynamics Y1 - 2011/12// VL - 25 IS - 10 M3 - Article SP - 509 EP - 533 SN - 10618562 AB - Large-eddy simulation (LES) is employed to investigate the use of plasma-based actuation for the control of a vortical gust interacting with a wing section at a low Reynolds number. Flow about the SD7003 airfoil section at 4° angle of attack and a chord-based Reynolds number of 60,000 is considered in the simulation, which typifies micro air vehicle (MAV) applications. Solutions are obtained to the Navier–Stokes equations that were augmented by source terms used to represent body forces imparted by the plasma actuator on the fluid. A simple phenomenological model provided these body forces resulting from the electric field generated by the plasma. The numerical method is based upon a high-fidelity time-implicit scheme and an implicit LES approach which are used to obtain solutions on a locally refined overset mesh system. A Taylor-like vortex model is employed to represent a gust impinging upon the wing surface, which causes a substantial disruption to the undisturbed flow. It is shown that the fundamental impact of the gust on unsteady aerodynamic forces is due to an inviscid process, corresponding to variation in the effective angle of attack, which is not easily overcome. Plasma control is utilised to mitigate adverse effects of the interaction and improve aerodynamic performance. Physical characteristics of the interaction are described, and several aspects of the control strategy are explored. Among these are uniform and non-uniform spanwise variations of the control configuration, co-flow and counter-flow orientations of the directed force, pulsed and continuous operations of the actuator and strength of the plasma field. Results of the control situations are compared with regard to their effect upon aerodynamic forces. It was found that disturbances to the moment coefficient produced by the gust can be greatly reduced, which may be significant for stability and handling of MAV operations. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Computational Fluid Dynamics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REYNOLDS number KW - PLASMA (Ionized gases) KW - AEROFOILS KW - STOKES equations KW - ANGLE of attack (Aerodynamics) KW - AERODYNAMIC load KW - ACTUATORS KW - gust KW - large-eddy simulation KW - low-Reynolds number airfoil KW - plasma-flow control KW - vortex/airfoil interaction N1 - Accession Number: 67344065; Rizzetta, Donald P. 1; Email Address: Donald.Rizzetta@wpafb.af.mil Visbal, Miguel R. 1; Affiliation: 1: Air Force Research Laboratory, Computational Aerophysics Branch, Wright-Patterson Air Force Base, USA; Source Info: Dec2011, Vol. 25 Issue 10, p509; Subject Term: REYNOLDS number; Subject Term: PLASMA (Ionized gases); Subject Term: AEROFOILS; Subject Term: STOKES equations; Subject Term: ANGLE of attack (Aerodynamics); Subject Term: AERODYNAMIC load; Subject Term: ACTUATORS; Author-Supplied Keyword: gust; Author-Supplied Keyword: large-eddy simulation; Author-Supplied Keyword: low-Reynolds number airfoil; Author-Supplied Keyword: plasma-flow control; Author-Supplied Keyword: vortex/airfoil interaction; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 25p; Document Type: Article L3 - 10.1080/10618562.2011.632374 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67344065&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stefik, Andreas AU - Hundhausen, Christopher AU - Patterson, Robert T1 - An empirical investigation into the design of auditory cues to enhance computer program comprehension JO - International Journal of Human-Computer Studies JF - International Journal of Human-Computer Studies Y1 - 2011/12// VL - 69 IS - 12 M3 - Article SP - 820 EP - 838 SN - 10715819 AB - Abstract: Decades of research have led to notable improvements in the representations used to aid human comprehension of computer programs. Much of this research has focused on visual representations, which leaves open the question of how best to design auditory representations of computer programs. While this question has particular relevance for visually impaired programmers, sighted programmers might also benefit from enhanced auditory representations of their programs. In order to investigate this question empirically, first, we introduce artifact encoding, a novel approach to rigorously measuring the comprehensibility of auditory representations of computer programs. Using this approach as a foundation, we present an experimental study that compared the comprehensibility of two alternative auditory program representations: one with lexical scoping cues that convey the nesting level of program statements, and another without such scoping cues. The results of our first experiment validate both artifact encoding and the scoping cues we used. To see whether auditory cues validated through our paradigm can aid program comprehension in a realistic task scenario, we experimentally compared programmers'' ability to debug programs using three alternative environments: (1) an auditory execution environment with our empirically derived auditory cues; (2) an auditory execution environment with the current state-of-the-art auditory cues generated by a screen reader running on top of Microsoft Visual Studio; and (3) a visual version of the execution environment. The results of our second experiment showed that our comprehensible auditory cues are significantly better than the state-of-the-art, affording human performance approaching the effectiveness of visual representations within the statistical margin of error. This research contributes a novel methodology and foundational empirical data that can guide the design of effective auditory representations of computer programs. [Copyright &y& Elsevier] AB - Copyright of International Journal of Human-Computer Studies is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER software KW - COMPREHENSION KW - AUDITORY perception KW - EMPIRICAL research KW - DEBUGGING in computer science KW - VISUAL perception KW - Auditory programming KW - Debugging KW - Program comprehension KW - Programming N1 - Accession Number: 65515494; Stefik, Andreas 1; Email Address: stefika@gmail.com Hundhausen, Christopher 2 Patterson, Robert 3; Affiliation: 1: Southern Illinois University Edwardsville, Department of Computer Science, USA 2: Washington State University, Human-centered Environments for Learning and Programming (HELP) Lab, School of Electrical Engineering and Computer Science, USA 3: US Air Force Research Laboratory, USA; Source Info: Dec2011, Vol. 69 Issue 12, p820; Subject Term: COMPUTER software; Subject Term: COMPREHENSION; Subject Term: AUDITORY perception; Subject Term: EMPIRICAL research; Subject Term: DEBUGGING in computer science; Subject Term: VISUAL perception; Author-Supplied Keyword: Auditory programming; Author-Supplied Keyword: Debugging; Author-Supplied Keyword: Program comprehension; Author-Supplied Keyword: Programming; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.ijhcs.2011.07.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65515494&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Przybyla, Craig P. AU - McDowell, David L. T1 - Simulated microstructure-sensitive extreme value probabilities for high cycle fatigue of duplex Ti–6Al–4V JO - International Journal of Plasticity JF - International Journal of Plasticity Y1 - 2011/12// VL - 27 IS - 12 M3 - Article SP - 1871 EP - 1895 SN - 07496419 AB - Abstract: A newly developed microstructure-sensitive extreme value probabilistic framework to characterize the performance/variability for damage evolution processes is exercised to compare the driving forces for fatigue crack formation (nucleation and early growth) at room temperature for four different microstructure variants of a duplex Ti–6Al–4V alloy. The aforementioned probabilistic framework links certain extreme value fatigue response parameters with microstructure attributes at fatigue critical sites through the use of marked correlation functions. By applying this framework to study the driving forces for fatigue crack formation in these microstructure variants of Ti–6Al–4V, these microstructures can be ranked in terms of relative high cycle fatigue (HCF) performance and the correlated microstructure attributes that have the most influence on the predicted fatigue response can be identified. Nonlocal fatigue indicator parameters (FIPs) based on the cyclic plastic strain averaged over domains on the length scale of the microstructure attributes (e.g., grains, phases) are used to estimate the driving force(s) for fatigue crack formation at the grain scale. By simulating multiple statistical volume elements (SVEs) using crystal plasticity constitutive relations, extreme value distributions of the predicted driving forces for fatigue crack formation are estimated using these FIPs. This strategy of using multiple SVEs contrasts with simulation based on a single representative volume element (RVE), which is often untenably large when considering extreme value responses. The simulations demonstrate that microstructures with smaller relative primary α grain sizes and lower volume fractions of the primary α grains tend to exhibit less variability and smaller magnitudes of the driving forces for fatigue crack formation. The extreme value FIPs are predicted to most likely occur at clusters of primary α grains oriented for easy basal slip. Additionally, surrounding grains/phases with soft orientation shed load to less favorably oriented primary α grains, producing extreme value FIPs. [Copyright &y& Elsevier] AB - Copyright of International Journal of Plasticity is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIMULATION methods & models KW - MICROSTRUCTURE KW - EXTREME value theory KW - PROBABILITY theory KW - METALS -- Fatigue KW - TITANIUM-aluminum-vanadium alloys KW - FRACTURE mechanics KW - CORRELATION (Statistics) KW - STRAINS & stresses (Mechanics) KW - Crystal plasticity KW - Extreme value statistics KW - High cycle fatigue KW - Microstructure KW - Ti–6Al–4V N1 - Accession Number: 66403479; Przybyla, Craig P. 1,2; Email Address: craig.przybyla@wpafb.af.mil McDowell, David L. 2,3; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 2: Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 3: George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia; Source Info: Dec2011, Vol. 27 Issue 12, p1871; Subject Term: SIMULATION methods & models; Subject Term: MICROSTRUCTURE; Subject Term: EXTREME value theory; Subject Term: PROBABILITY theory; Subject Term: METALS -- Fatigue; Subject Term: TITANIUM-aluminum-vanadium alloys; Subject Term: FRACTURE mechanics; Subject Term: CORRELATION (Statistics); Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: Crystal plasticity; Author-Supplied Keyword: Extreme value statistics; Author-Supplied Keyword: High cycle fatigue; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Ti–6Al–4V; Number of Pages: 25p; Document Type: Article L3 - 10.1016/j.ijplas.2011.01.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66403479&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wong-Ng, W. AU - Xie, W. AU - Yan, Y. AU - Liu, G. AU - Kaduk, J. AU - Thomas, E. AU - Tritt, T. T1 - Structural and thermoelectric properties of BaRCo4O7 (R = Dy, Ho, Er, Tm, Yb, and Lu). JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/12// VL - 110 IS - 11 M3 - Article SP - 113706 PB - American Institute of Physics SN - 00218979 AB - The structure and thermoelectric properties of a series of barium lanthanide cobaltites, BaRCo4O7 (R = Dy, Ho, Er, Tm, Yb, and Lu), which were prepared using the spark plasma synthesis technique, have been investigated. The space group of these compounds was re-determined and confirmed to be P31c instead of the reported P63mc. The lattice parameters a and c range from 6.26279(2) Å to 6.31181(6) Å, and from 10.22468(6) Å to 10.24446(15) Å for R = Lu to Dy, respectively. The crystal structure of BaRCo4O7 is built up from Kagome sheets of CoO4 tetrahedra, linked by triangular layers of CoO4 tetrahedra. The values of figure of merit (ZT) of the BaRCo4O7 samples were determined to be around 0.02 at 800 K. X-ray diffraction patterns of these samples have been determined and submitted to the Powder Diffraction File. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BARIUM compounds KW - RESEARCH KW - CRYSTAL structure KW - THERMOELECTRICITY KW - CRYSTAL lattices KW - X-ray diffraction N1 - Accession Number: 69702960; Wong-Ng, W. 1 Xie, W. 2 Yan, Y. 1 Liu, G. 1 Kaduk, J. 3 Thomas, E. 4 Tritt, T. 2; Affiliation: 1: Ceramics Division, NIST, Gaithersburg, Maryland 20899, 2: Department of Physics, Clemson University, Greensville, South Carolina 29634, 3: Illinois Institute of Technology, Chicago, Illinois 60616, 4: Air Force Research Laboratory, Wright Pattersen, Ohio 45433,; Source Info: Dec2011, Vol. 110 Issue 11, p113706; Subject Term: BARIUM compounds; Subject Term: RESEARCH; Subject Term: CRYSTAL structure; Subject Term: THERMOELECTRICITY; Subject Term: CRYSTAL lattices; Subject Term: X-ray diffraction; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 8p; Illustrations: 2 Illustrations, 4 Charts, 7 Graphs; Document Type: Article L3 - 10.1063/1.3663526 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69702960&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, Danhong AU - Gumbs, Godfrey AU - Roslyak, O. T1 - Optical modulation effects on nonlinear electron transport in graphene in terahertz frequency range. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2011/12// VL - 58 IS - 21 M3 - Article SP - 1898 EP - 1907 SN - 09500340 AB - We describe very fast electron dynamics for a graphene nanoribbon driven by a control electromagnetic field in the terahertz frequency regime. The mobility as a function of bias field has been found to possess a large threshold value when entering a nonlinear transport regime. This value depends on the lattice temperature, electron density, impurity scattering strength, nanoribbon width and correlation length for the line-edge roughness. An enhanced electron mobility beyond this threshold has been observed, which is related to the initially-heated electrons in high energy states with a larger group velocity. However, this mobility enhancement quickly reaches a maximum governed by the Fermi velocity in graphene and the dramatically increased phonon scattering. Super-linear and sub-linear temperature dependences of the mobility are seen in the linear and nonlinear transport regimes, which is attributed separately to the results of sweeping electrons from the right Fermi edge to the left one through elastic scattering and moving electrons from low-energy states to high-energy ones through field-induced electron heating. The threshold field is pushed up by a decreased correlation length in the high field regime, and is further accompanied by a reduced magnitude in the mobility enhancement. This implies an anomalous high-field increase of the line-edge roughness scattering with decreasing correlation length due to the occupation of high-energy states by field-induced electron heating. Additionally, a self-consistent device modeling has been proposed for graphene transistors under an optical modulation on its gate, which employs Boltzmann moment equations up to the third-order for describing fast carrier dynamics and full wave electromagnetics coupled to the Boltzmann equation for describing spatial-temporal dependence of the total field. Finally, a detailed comparison of the derived Maxwell–Boltzmann moment equations in this paper with the well known Vlasov–Maxwell equations is also included. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON transport KW - GRAPHENE KW - SUBMILLIMETER waves KW - ELECTROMAGNETIC fields KW - TRANSPORT theory (Mathematics) KW - ELECTRON distribution KW - NANOSTRUCTURED materials KW - NONLINEAR theories KW - Boltzmann transport equation KW - graphene KW - Maxwell equation KW - moment equations KW - nanoribbon KW - optical modulation N1 - Accession Number: 69733079; Huang, Danhong 1; Email Address: danhong.huang@kirtland.af.mil Gumbs, Godfrey 2 Roslyak, O. 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, USA 2: Department of Physics and Astronomy, Hunter College at the City University of New York, USA; Source Info: Dec2011, Vol. 58 Issue 21, p1898; Subject Term: ELECTRON transport; Subject Term: GRAPHENE; Subject Term: SUBMILLIMETER waves; Subject Term: ELECTROMAGNETIC fields; Subject Term: TRANSPORT theory (Mathematics); Subject Term: ELECTRON distribution; Subject Term: NANOSTRUCTURED materials; Subject Term: NONLINEAR theories; Author-Supplied Keyword: Boltzmann transport equation; Author-Supplied Keyword: graphene; Author-Supplied Keyword: Maxwell equation; Author-Supplied Keyword: moment equations; Author-Supplied Keyword: nanoribbon; Author-Supplied Keyword: optical modulation; Number of Pages: 10p; Document Type: Article L3 - 10.1080/09500340.2011.588345 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69733079&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Arora, Rajan AU - Petrov, Georgi I. AU - Noojin, Gary D. AU - Thomas, Patrick A. AU - Denton, Michael L. AU - Rockwell, Benjamin A. AU - Thomas, Robert J. AU - Yakovlev, Vladislav V. T1 - Detecting mineral content in turbid medium using nonlinear Raman imaging: feasibility study. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2011/12// VL - 58 IS - 21 M3 - Article SP - 1914 EP - 1921 SN - 09500340 AB - Osteoporosis is a bone disease characterized by reduced mineral content with resulting changes in bone architecture, which in turn increases the risk of bone fracture. Raman spectroscopy has an intrinsic sensitivity to the chemical content of the bone, but its application to study bones in vivo is limited due to strong optical scattering in tissue. It has been proposed that Raman excitation with photoacoustic detection can successfully address the problem of chemically specific imaging in deep tissue. In this report, the principal possibility of photoacoustic imaging for detecting mineral content is evaluated. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TURBIDITY KW - OSTEOPOROSIS KW - BONES -- Diseases KW - FRACTURES KW - RAMAN spectroscopy KW - MINERAL content of bones KW - PHOTOACOUSTIC spectroscopy KW - VITAMIN D deficiency KW - osteoporosis KW - photoacoustics KW - Raman scattering KW - stimulated Raman scattering N1 - Accession Number: 69733081; Arora, Rajan 1 Petrov, Georgi I. 1 Noojin, Gary D. 2 Thomas, Patrick A. 3 Denton, Michael L. 2 Rockwell, Benjamin A. 3 Thomas, Robert J. 3 Yakovlev, Vladislav V. 1; Email Address: yakovlev@uwm.edu; Affiliation: 1: Department of Physics, University of Wisconsin – Milwaukee, USA 2: Biomedical Sciences and Technologies Department, TASC, Inc., USA 3: US Air Force Research Laboratory, 711th Human Performance Wing, Human Effectiveness Directorate, Directed Energy Bioeffects Division, Optical Radiation Branch, USA; Source Info: Dec2011, Vol. 58 Issue 21, p1914; Subject Term: TURBIDITY; Subject Term: OSTEOPOROSIS; Subject Term: BONES -- Diseases; Subject Term: FRACTURES; Subject Term: RAMAN spectroscopy; Subject Term: MINERAL content of bones; Subject Term: PHOTOACOUSTIC spectroscopy; Subject Term: VITAMIN D deficiency; Author-Supplied Keyword: osteoporosis; Author-Supplied Keyword: photoacoustics; Author-Supplied Keyword: Raman scattering; Author-Supplied Keyword: stimulated Raman scattering; Number of Pages: 8p; Document Type: Article L3 - 10.1080/09500340.2011.591507 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69733081&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gumbs, Godfrey AU - Roslyak, O. AU - Huang, Danhong AU - Balassis, Antonios T1 - Spectroscopic characterization of gapped graphene in the presence of circularly polarized light. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2011/12// VL - 58 IS - 21 M3 - Article SP - 1990 EP - 1996 SN - 09500340 AB - We present a description of the energy loss of a charged particle moving parallel to a graphene layer and graphene double layers. Specifically, we compare the stopping power of the plasma oscillations for these two configurations in the absence as well as the presence of circularly polarized light whose frequency and intensity can be varied to yield an energy gap of several hundred meV between the valence and conduction bands. The dressed states of the Dirac electrons by the photons yield collective plasma excitations whose characteristics are qualitatively and quantitatively different from those produced by Dirac fermions in gapless graphene, due in part to the finite effective mass of the dressed electrons. For example, the range of wave numbers for undamped self-sustaining plasmons is increased as the gap is increased, thereby increasing the stopping power of graphene for some range of charged particle velocity when graphene is radiated by circularly polarized light. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPHENE KW - SPECTRUM analysis KW - OSCILLATIONS KW - ENERGY gaps (Physics) KW - FERMIONS KW - PLASMONS (Physics) KW - CONDUCTION band KW - dressed Dirac electrons KW - electron energy loss KW - graphene KW - plasmon excitations N1 - Accession Number: 69733091; Gumbs, Godfrey 1 Roslyak, O. 1; Email Address: avroslyak@gmail.com Huang, Danhong 2 Balassis, Antonios 3; Affiliation: 1: Department of Physics and Astronomy, Hunter College at the City University of New York, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, USA 3: Physics Department, Fordham University, USA; Source Info: Dec2011, Vol. 58 Issue 21, p1990; Subject Term: GRAPHENE; Subject Term: SPECTRUM analysis; Subject Term: OSCILLATIONS; Subject Term: ENERGY gaps (Physics); Subject Term: FERMIONS; Subject Term: PLASMONS (Physics); Subject Term: CONDUCTION band; Author-Supplied Keyword: dressed Dirac electrons; Author-Supplied Keyword: electron energy loss; Author-Supplied Keyword: graphene; Author-Supplied Keyword: plasmon excitations; Number of Pages: 7p; Document Type: Article L3 - 10.1080/09500340.2011.601330 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69733091&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nifiatis, Fotis AU - Weijie Su AU - Haley, Joy E. AU - Slagle, Jonathan E. AU - Cooper, Thomas M. T1 - Comparison of the Photophysical Properties of a Planar, PtOEP, and a Nonplanar, PtOETPP, Porphyrin in Solution and Doped Films. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2011/12// VL - 115 IS - 47 M3 - Article SP - 13764 EP - 13772 SN - 10895639 AB - The absorption and emission spectroscopic properties of planar (2,3,7,8,12,13,17,18-octaethylporphyrinato)platinum(II) (PtOEP) and nonplanar (2,3,7,8,12,13,17,18-octaethyl-5,10,15,20-tetraphenylporphyrinato)platinum(II) (PtOETPP) complexes have been studied at room temperature. Liquid solutions and doped films, in polystyrene (PS) and epoxy (EPO) polymers, have been investigated. In dilute liquid solution, the photophysical properties of the nonplanar complex are substantially perturbed compared to the planar analogue. Strong ligating solvents further affect the photophysical behavior of both Pt(II) complexes via axial ligation to the central metal ion. At high concentrations, ground state aggregation and excimer formation is observed for PtOEP films in PS and EPO hosts. Incorporation of the nonplanar PtOETPP complex in PS results in enhanced coplanarity of the meso-phenyl groups, leading to a more extended conjugation between the meso-substituents and the π-conjugated system of the macrocycle. A more planar conformer for the nonplanar PtOETPP is present in the EPO host. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSORPTION spectra KW - EMISSION spectroscopy KW - POLYSTYRENE KW - EPOXY compounds KW - METAL ions KW - EXCIMERS N1 - Accession Number: 70238248; Nifiatis, Fotis 1,2; Email Address: Fotis.Nifiatis@Plattsburgh.edu Weijie Su 1,3 Haley, Joy E. 1 Slagle, Jonathan E. 1,4 Cooper, Thomas M. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, United States 2: Department of Chemistry, State University of New York at Plattsburgh, Plattsburgh, New York 12901, United States 3: General Dynamics Information Technology, Dayton, Ohio 45431, United States 4: Science Applications International Corporation, Dayton, Ohio 45431, United States; Source Info: Dec2011, Vol. 115 Issue 47, p13764; Subject Term: ABSORPTION spectra; Subject Term: EMISSION spectroscopy; Subject Term: POLYSTYRENE; Subject Term: EPOXY compounds; Subject Term: METAL ions; Subject Term: EXCIMERS; NAICS/Industry Codes: 326140 Polystyrene Foam Product Manufacturing; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70238248&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Simon, Gerard K. AU - Maruyama, Benji AU - Durstock, Michael F. AU - Burton, David J. AU - Goswami, Tarun T1 - Silicon-coated carbon nanofiber hierarchical nanostructures for improved lithium-ion battery anodes JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2011/12// VL - 196 IS - 23 M3 - Article SP - 10254 EP - 10257 SN - 03787753 AB - Abstract: Silicon-coated carbon nanofibers (CNFs) are a viable method of exploiting silicon''s capacity in a battery anode while ameliorating the complications of silicon expansion as it alloys with lithium. Silicon-coated CNFs were fabricated through chemical vapor deposition and deposited onto a carbon fiber mesh. This novel anode material demonstrated a capacity of 954mAhg−1 in the first cycle, but faded to 766mAhg−1 after 20 cycles. Structural characterization of the samples before and after cycling was carried out using field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The results suggest that a portion of the fade may be due to separation of the silicon coating from the CNFs. Enough silicon remains in contact with the conductive network of CNFs to allow a usable reversible capacity that well exceeds that of graphite. An anode of this material can double the capacity of a lithium-ion battery or allow a 14% weight reduction. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LITHIUM-ion batteries KW - SILICON KW - SURFACE coatings KW - CARBON fibers KW - NANOSTRUCTURES KW - ANODES KW - CHEMICAL vapor deposition KW - TRANSMISSION electron microscopy KW - Anode KW - Carbon nanofibers KW - Hierarchical KW - Lithium-ion battery KW - Silicon N1 - Accession Number: 66230741; Simon, Gerard K. 1,2; Email Address: gerard.simon@wpafb.af.mil Maruyama, Benji 3 Durstock, Michael F. 3 Burton, David J. 4 Goswami, Tarun 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXBC, 2941 Hobson Way, Wright Patterson AFB, OH 45433-7750, USA 2: Biomedical, Industrial and Human Factors Engineering, Wright State University, 207 Russ Engineering Center, Dayton, OH 45435, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXBN, 2941 Hobson Way, Wright Patterson AFB, OH 45433-7750, USA 4: Applied Sciences, Inc., 141 West Xenia Avenue, Cedarville, OH 45014-0579, USA; Source Info: Dec2011, Vol. 196 Issue 23, p10254; Subject Term: LITHIUM-ion batteries; Subject Term: SILICON; Subject Term: SURFACE coatings; Subject Term: CARBON fibers; Subject Term: NANOSTRUCTURES; Subject Term: ANODES; Subject Term: CHEMICAL vapor deposition; Subject Term: TRANSMISSION electron microscopy; Author-Supplied Keyword: Anode; Author-Supplied Keyword: Carbon nanofibers; Author-Supplied Keyword: Hierarchical; Author-Supplied Keyword: Lithium-ion battery; Author-Supplied Keyword: Silicon; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jpowsour.2011.08.058 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66230741&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dickerson, Matthew B. AU - Knight, Caitlin L. AU - Gupta, Maneesh K. AU - Luckarift, Heather R. AU - Drummy, Lawrence F. AU - Jespersen, Michael L. AU - Johnson, Glenn R. AU - Naik, Rajesh R. T1 - Hybrid fibers containing protein-templated nanomaterials and biologically active components as antibacterial materials JO - Materials Science & Engineering: C JF - Materials Science & Engineering: C Y1 - 2011/12// VL - 31 IS - 8 M3 - Article SP - 1748 EP - 1758 SN - 09284931 AB - Abstract: The persistent and emerging threat of bacterial infections now extends to many real world scenarios that drive a requirement for antimicrobial fabrics. Such functionalized textiles may find application in protective wear for medical and military personnel and provide functional wound dressings that reduce infection in situ. In this work, biomimetic enzyme entrapment and protein-directed nanomaterials synthesis is combined and applied to the antimicrobial functionalization of fabrics. A multi-faceted approach was adopted to address the fabrication of textiles with Ag nanoparticles, bactericidal proteins and mineral coatings that may contribute (singularly or in unison) to provide antimicrobial activity. Fibroin coordinated silver ions, for example, were chemically reduced to generate silver nanoparticles within the interior of silk fabric fibers. Silk textiles were further functionalized by the surface adsorption of the bactericidal enzyme lysozyme. The exposure of such lysozyme-conjugated fabrics to mineralizing solutions enabled the self-directed immobilization of the enzyme in a subsequent protective matrix of amorphous silica or titania. Silk-immobilized lysozyme was also utilized to adsorb nanocrystalline TiO2 from solution onto the fabric surface; a subsequent layer of enzyme served to entrap the ceramic particles under a layer of biomimetically mineralized titania. The multiplicity of antimicrobial activities derived from this approach thereby combined; 1) the hydrolytic activity of lysozyme (demonstrated by radial diffusion assays), 2) the bactericidal properties of silver nanoparticles (demonstrated effective against Staphylococcus aureus, Escherichia coli, and silver resistant E. coli) and 3) the photocatalytic bactericidal response of TiO2 under UV illumination. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: C is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURED materials KW - FIBERS KW - BIOACTIVE compounds KW - COLLOIDAL silver KW - ANTIBACTERIAL agents KW - LYSOZYMES KW - TITANIUM dioxide KW - SILK KW - SURFACE coatings KW - Antibacterial KW - Biomimetic KW - Lysozyme KW - Silk KW - Silver nanoparticles KW - TiO2 N1 - Accession Number: 66662151; Dickerson, Matthew B. 1 Knight, Caitlin L. 1 Gupta, Maneesh K. 1 Luckarift, Heather R. 2 Drummy, Lawrence F. 1 Jespersen, Michael L. 1 Johnson, Glenn R. 2 Naik, Rajesh R. 1; Email Address: Rajesh.Naik@wpafb.af.mil; Affiliation: 1: Nanostructured and Biological Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, United States 2: Microbiology and Applied Biochemistry, Materials & Manufacturing Directorate, Air Force Research Laboratory, Tyndall AFB, FL 32403, United States; Source Info: Dec2011, Vol. 31 Issue 8, p1748; Subject Term: NANOSTRUCTURED materials; Subject Term: FIBERS; Subject Term: BIOACTIVE compounds; Subject Term: COLLOIDAL silver; Subject Term: ANTIBACTERIAL agents; Subject Term: LYSOZYMES; Subject Term: TITANIUM dioxide; Subject Term: SILK; Subject Term: SURFACE coatings; Author-Supplied Keyword: Antibacterial; Author-Supplied Keyword: Biomimetic; Author-Supplied Keyword: Lysozyme; Author-Supplied Keyword: Silk; Author-Supplied Keyword: Silver nanoparticles; Author-Supplied Keyword: TiO2; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 112999 All other miscellaneous animal production; NAICS/Industry Codes: 313210 Broadwoven Fabric Mills; NAICS/Industry Codes: 313110 Fiber, Yarn, and Thread Mills; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.msec.2011.08.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66662151&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Proctor, Susan P. AU - Heaton, Kristin J. AU - Smith, Kristen W. AU - Rodrigues, Ema R. AU - Widing, Drew E. AU - Herrick, Robert AU - Vasterling, Jennifer J. AU - McClean, Michael D. T1 - The Occupational JP8 Exposure Neuroepidemiology Study (OJENES): Repeated workday exposure and central nervous system functioning among US Air Force personnel JO - NeuroToxicology JF - NeuroToxicology Y1 - 2011/12// VL - 32 IS - 6 M3 - Article SP - 799 EP - 808 SN - 0161813X AB - Abstract: One of the most prevalent workplace chemical exposures historically and currently confronting the global military and civilian workforce is jet propellant (JP) fuel (e.g., JP4, JP5, JP8, jet A1), a complex mixture of numerous hydrocarbon compounds and additives. To date, numerous protective and preventive strategies (e.g., federal exposure limits, workplace procedure protocols, protective gear such as goggles, respirator use, gloves, and coveralls) have been put in place to minimize acutely toxic exposure levels. However, questions remain regarding the effect of repeated exposures at lower (than regulated) levels of JP fuel. The Occupational JP8 Exposure Neuroepidemiology Study (OJENES) was designed to examine the relationships between occupational JP8 exposure over multiple, repeated workdays and specific aspects of central nervous system (CNS) functioning among Air Force (AF) personnel. In this report, we present the OJENES methodology, descriptive findings related to participant characteristics, JP8 exposure levels observed over a work week among higher and lower exposure groups, and neuropsychological task performances at the first study assessment. Results indicated minimal differences between participants in the high and lower exposure groups in terms of descriptive characteristics, other than daily JP8 exposure levels (p <0.001). In addition, neuropsychological task performances for most task measures were not found to be significantly different from reported reference ranges. These findings demonstrated that confounding and misclassification of exposure and outcome status are not major concerns for the study. Therefore, future OJENES analyses targeting the more focused research questions regarding associations between JP8 exposure and CNS functioning are likely to provide valid conclusions, as they will be less influenced by these research biases. [Copyright &y& Elsevier] AB - Copyright of NeuroToxicology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDUSTRIAL hygiene KW - CENTRAL nervous system -- Physiology KW - EPIDEMIOLOGY KW - NEURONS -- Physiology KW - AIRMEN KW - JET planes -- Fuel KW - HYDROCARBONS KW - TOXICOLOGY KW - NEUROPSYCHOLOGICAL tests KW - UNITED States. Air Force -- Officials & employees KW - UNITED States KW - Central nervous system KW - Exposure assessment KW - Jet fuel KW - JP8 KW - Military N1 - Accession Number: 67208442; Proctor, Susan P. 1,2,3; Email Address: sproctor@bu.edu Heaton, Kristin J. 1,3 Smith, Kristen W. 3 Rodrigues, Ema R. 3 Widing, Drew E. 4 Herrick, Robert 5 Vasterling, Jennifer J. 6,7 McClean, Michael D. 3; Affiliation: 1: Military Performance Division, US Army Research Institute of Environmental Medicine, Kansas St., Bldg 42, Natick, MA 01760, USA 2: Research Service, VA Boston Healthcare System, 150 South Huntington Ave., Boston, MA 02130, USA 3: Department of Environmental Health, Boston University School of Public Health, Boston, MA 02118, USA 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 5: Department of Environmental Health, Harvard School of Public Health, Boston, MA 02115, USA 6: Psychology Service, VA Boston Healthcare System, 150 South Huntington Ave., Boston, MA 02130, USA 7: Department of Psychiatry, Boston University School of Medicine, Boston, MA 02118, USA; Source Info: Dec2011, Vol. 32 Issue 6, p799; Subject Term: INDUSTRIAL hygiene; Subject Term: CENTRAL nervous system -- Physiology; Subject Term: EPIDEMIOLOGY; Subject Term: NEURONS -- Physiology; Subject Term: AIRMEN; Subject Term: JET planes -- Fuel; Subject Term: HYDROCARBONS; Subject Term: TOXICOLOGY; Subject Term: NEUROPSYCHOLOGICAL tests; Subject Term: UNITED States. Air Force -- Officials & employees; Subject Term: UNITED States; Author-Supplied Keyword: Central nervous system; Author-Supplied Keyword: Exposure assessment; Author-Supplied Keyword: Jet fuel; Author-Supplied Keyword: JP8; Author-Supplied Keyword: Military; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 928110 National Security; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.neuro.2011.06.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67208442&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baker, Daniel N. AU - Odstrcil, Dusan AU - Anderson, Brian J. AU - Arge, C. Nick AU - Benna, Mehdi AU - Gloeckler, George AU - Korth, Haje AU - Mayer, Leslie R. AU - Raines, Jim M. AU - Schriver, David AU - Slavin, James A. AU - Solomon, Sean C. AU - Trávníček, Pavel M. AU - Zurbuchen, Thomas H. T1 - The space environment of Mercury at the times of the second and third MESSENGER flybys JO - Planetary & Space Science JF - Planetary & Space Science Y1 - 2011/12// VL - 59 IS - 15 M3 - Article SP - 2066 EP - 2074 SN - 00320633 AB - Abstract: The second and third flybys of Mercury by the MESSENGER spacecraft occurred, respectively, on 6 October 2008 and on 29 September 2009. In order to provide contextual information about the solar wind properties and the interplanetary magnetic field (IMF) near the planet at those times, we have used an empirical modeling technique combined with a numerical physics-based solar wind model. The Wang–Sheeley–Arge (WSA) method uses solar photospheric magnetic field observations (from Earth-based instruments) in order to estimate the inner heliospheric radial flow speed and radial magnetic field out to 21.5 solar radii from the Sun. This information is then used as input to the global numerical magnetohydrodynamic model, ENLIL, which calculates solar wind velocity, density, temperature, and magnetic field strength and polarity throughout the inner heliosphere. WSA-ENLIL calculations are presented for the several-week period encompassing the second and third flybys. This information, in conjunction with available MESSENGER data, aid in understanding the Mercury flyby observations and provide a basis for global magnetospheric modeling. We find that during both flybys, the solar wind conditions were very quiescent and would have provided only modest dynamic driving forces for Mercury''s magnetospheric system. [Copyright &y& Elsevier] AB - Copyright of Planetary & Space Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE environment KW - MERCURY (Planet) KW - MESSENGER (Space probe) KW - COSMIC magnetic fields KW - MAGNETOSPHERIC physics KW - MAGNETOHYDRODYNAMICS KW - HELIOSPHERE (Ionosphere) KW - Interplanetary magnetic field KW - Magnetospheres KW - Mercury KW - MESSENGER KW - Solar wind N1 - Accession Number: 69533779; Baker, Daniel N. 1; Email Address: daniel.baker@lasp.colorado.edu Odstrcil, Dusan 2,3 Anderson, Brian J. 4 Arge, C. Nick 5 Benna, Mehdi 6 Gloeckler, George 7 Korth, Haje 4 Mayer, Leslie R. 8 Raines, Jim M. 7 Schriver, David 9 Slavin, James A. 3 Solomon, Sean C. 10 Trávníček, Pavel M. 9,11 Zurbuchen, Thomas H. 7; Affiliation: 1: Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80303, USA 2: Computational and Data Sciences, George Mason University, Fairfax, VA 22030, USA 3: Heliophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA 4: The Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA 5: Air Force Research Laboratory, Kirtland Air Force Base, NM 87117-5776, USA 6: Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA 7: Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI 48109, USA 8: National Oceanic and Atmospheric Administration, Boulder, CO 80303, USA 9: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, USA 10: Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, DC 20015, USA 11: Astronomical Institute and Institute of Atmospheric Physics, ASCR, 14131 Prague, Czech Republic; Source Info: Dec2011, Vol. 59 Issue 15, p2066; Subject Term: SPACE environment; Subject Term: MERCURY (Planet); Subject Term: MESSENGER (Space probe); Subject Term: COSMIC magnetic fields; Subject Term: MAGNETOSPHERIC physics; Subject Term: MAGNETOHYDRODYNAMICS; Subject Term: HELIOSPHERE (Ionosphere); Author-Supplied Keyword: Interplanetary magnetic field; Author-Supplied Keyword: Magnetospheres; Author-Supplied Keyword: Mercury; Author-Supplied Keyword: MESSENGER; Author-Supplied Keyword: Solar wind; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.pss.2011.01.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69533779&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Joseph D. AU - Roy, Sukesh AU - Gord, James R. AU - Meyer, Terrence R. T1 - Communication: Time-domain measurement of high-pressure N2 and O2 self-broadened linewidths using hybrid femtosecond/picosecond coherent anti-Stokes Raman scattering. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2011/11/28/ VL - 135 IS - 20 M3 - Article SP - 201104 PB - American Institute of Physics SN - 00219606 AB - The direct measurement of self-broadened linewidths using the time decay of pure-rotational hybrid femtosecond/picosecond coherent anti-Stokes Raman scattering (fs/ps RCARS) signals is demonstrated in gas-phase N2 and O2 from 1-20 atm. Using fs pump and Stokes pulses and a spectrally narrowed ps probe pulse, collisional dephasing rates with time constants as short as 2.5 ps are captured with high accuracy for individual rotational transitions. S-branch linewidths of N2 and O2 from ∼0.06 to 2.2 cm-1 and the line separation of O2 triplet states are obtained from the measured dephasing rates and compared with high-resolution, frequency-domain measurements and S-branch approximations using the modified exponential gap model. The accuracy of the current measurements suggests that the fs/ps RCARS approach is well suited for tracking the collisional dynamics of gas-phase mixtures over a wide range of pressures. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXYGEN KW - MEASUREMENT KW - HIGH pressure (Science) KW - RAMAN effect KW - NITROGEN KW - APPROXIMATION theory KW - COLLISIONS (Physics) KW - COAL gas N1 - Accession Number: 67537832; Miller, Joseph D. 1 Roy, Sukesh 2 Gord, James R. 3 Meyer, Terrence R. 1,4; Affiliation: 1: Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, 2: Spectral Energies, LLC, Dayton, Ohio 45431, 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, Ohio 45433, 4: Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-University Erlangen-Nürnburg, Erlangen,; Source Info: Nov2011, Vol. 135 Issue 20, p201104; Subject Term: OXYGEN; Subject Term: MEASUREMENT; Subject Term: HIGH pressure (Science); Subject Term: RAMAN effect; Subject Term: NITROGEN; Subject Term: APPROXIMATION theory; Subject Term: COLLISIONS (Physics); Subject Term: COAL gas; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 4p; Illustrations: 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.3665932 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67537832&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O.N. AU - Woodward, C.F. T1 - Microstructure and properties of a refractory NbCrMo0.5Ta0.5TiZr alloy JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2011/11/25/ VL - 529 M3 - Article SP - 311 EP - 320 SN - 09215093 AB - Abstract: A new refractory alloy, Nb20Cr20Mo10Ta10Ti20Zr20, was produced by vacuum arc melting. To close shrinkage porosity, it was hot isostatically pressed (HIPd) at T =1723K and P =207MPa for 3h. In both as-solidified and HIPd conditions, the alloy contained three phases: two body centered cubic (BCC1 and BCC2) and one face centered cubic (FCC). The BCC1 phase was enriched with Nb, Mo and Ta and depleted with Zr and Cr, and its lattice parameter after HIP was a =324.76±0.16pm. The BCC2 phase was enriched with Zr and Ti and considerably depleted with Mo, Cr and Ta, and its lattice parameter after HIP was estimated to be a= 341.0±1.0pm. The FCC phase was highly enriched with Cr and it was identified as a Laves C15 phase, (Zr,Ta)(Cr,Mo,Nb)2, with the lattice parameter a =733.38±0.18pm. The volume fractions of the BCC1, BCC2 and FCC phases were 67%, 16% and 17%, respectively. The alloy density and Vickers microhardness were ρ =8.23±0.01g/cm3 and H v =5288±71MPa. The alloy had compression yield strength of 1595MPa at 296K, 983MPa at 1073K, 546MPa at 1273K and 171MPa at 1473K. During deformation at 296K and 1073K, the alloy showed a mixture of ductile and brittle fracture after plastic compression strain of ∼5–6%. No macroscopic fracture was observed after 50% compression strain at 1273K and 1473K. Phase transformations and particle coarsening considerably accelerated by the plastic deformation occurred in the temperature range of 1073–1473K. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NIOBIUM alloys KW - MICROSTRUCTURE KW - HEAT resistant alloys KW - VACUUM arcs KW - POROSITY KW - TEMPERATURE effect KW - MICROHARDNESS KW - Alloy design KW - Crystallography KW - High entropy alloy KW - Mechanical properties KW - Microstructure N1 - Accession Number: 66732780; Senkov, O.N. 1,2; Email Address: oleg.senkov@wpafb.af.mil Woodward, C.F. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: UES Inc., Dayton, OH 45432, USA; Source Info: Nov2011, Vol. 529, p311; Subject Term: NIOBIUM alloys; Subject Term: MICROSTRUCTURE; Subject Term: HEAT resistant alloys; Subject Term: VACUUM arcs; Subject Term: POROSITY; Subject Term: TEMPERATURE effect; Subject Term: MICROHARDNESS; Author-Supplied Keyword: Alloy design; Author-Supplied Keyword: Crystallography; Author-Supplied Keyword: High entropy alloy; Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Microstructure; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.msea.2011.09.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66732780&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yoonessi, Mitra AU - Heinz, Hendrik AU - Dang, Thuy D. AU - Bai, Zongwu T1 - Morphology of sulfonated polyarylenethioethersulfone random copolymer series as proton exchange fuel cells membranes by small angle neutron scattering JO - Polymer JF - Polymer Y1 - 2011/11/10/ VL - 52 IS - 24 M3 - Article SP - 5615 EP - 5621 SN - 00323861 AB - Abstract: Sulfonated polyarylenethioethersulfone (SPTES) copolymers with high proton conductivity (100–215 mS/cm at 65 °C, 85% relative humidity) are promising potential proton exchange membrane (PEM) for fuel cells. Small angle neutron scattering (SANS) of the hydrated SPTES copolymer membranes at 25 °C exhibit a nanostructure which can be approximated by correlated polydisperse spherical aggregates containing water molecules with liquid-like ordering (Percus Yevick approximation) and large scale water pockets. The ionic domain radius and the volume packing density of the aggregates present in the hydrated SPTES copolymer membranes at 25 °C increased with increasing degree of sulfonation. SPTES-80 with highest degree of sulfonation (71.6%) showed a Guinier plateau at the very low q range (q < 1 × 10−4 1/Å) indicating presence of isolated large scale morphology (Rg  = 1.3 ± 0.18 micron). The radius of spherical ionic aggregates present in the hydrated SPTES-50 and SPTES-60 copolymer membranes increased with increasing temperature to 55 °C, but the large scale morphology changed to a fractal network. Further increase of the sulfonation degree to 63.3% and 71.6% (SPTES-70 and SPTES-80) resulted in a substantial morphology change of the spherical aggregates to an irregular bicontinuous hydrophobic/hydrophilic morphology for the hydrated SPTES-70 and SPTES-80 copolymer membranes at 55 °C. Presence of ionic maxima followed by a power law decay of −4 for SPTES-70 and SPTES-80 copolymer membranes was attributed to the bicontinuous phase morphology at high degree of sulfonation and elevated temperature (55 °C). The disruption of the larger scale fractal morphology was characterized by significant decrease in the intermediate scattering intensity. Hydrophobic and hydrophilic domains were separated distinctly by sulfonic groups at the interface showing as power law decay of −4 for all hydrated SPTES copolymers. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SULFONES KW - COPOLYMERS KW - PROTON exchange membrane fuel cells KW - NEUTRON scattering KW - NANOSTRUCTURED materials KW - TEMPERATURE effect KW - SULFONATION KW - Fuel cells membrane KW - Morphology KW - Neutron scattering N1 - Accession Number: 67139573; Yoonessi, Mitra 1,2; Email Address: mitra.yoonessi@nasa.gov Heinz, Hendrik 3 Dang, Thuy D. 4 Bai, Zongwu 5; Affiliation: 1: Ohio Aerospace Institute, Cleveland, OH 44142, USA 2: NASA Glenn Research Center, Cleveland, OH 44135, USA 3: Department of Polymer Engineering, University of Akron, Akron, OH 44325, USA 4: Air Force Research Laboratory, AFRL/RXBN, Wright-Patterson AFB, OH 45433, USA 5: University of Dayton Research Institute, 300 College Park Drive, Dayton, OH 45469, USA; Source Info: Nov2011, Vol. 52 Issue 24, p5615; Subject Term: SULFONES; Subject Term: COPOLYMERS; Subject Term: PROTON exchange membrane fuel cells; Subject Term: NEUTRON scattering; Subject Term: NANOSTRUCTURED materials; Subject Term: TEMPERATURE effect; Subject Term: SULFONATION; Author-Supplied Keyword: Fuel cells membrane; Author-Supplied Keyword: Morphology; Author-Supplied Keyword: Neutron scattering; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.polymer.2011.09.047 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67139573&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Klukovich, Hope M. AU - Kean, Zachary S. AU - Iacono, Scott T. AU - Craig, Stephen L. T1 - Mechanically Induced Scission and Subsequent Thermal Remending of Perfluorocyclobutane Polymers. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2011/11/09/ VL - 133 IS - 44 M3 - Article SP - 17882 EP - 17888 SN - 00027863 AB - Perfluorocyclobutane (PFCB) polymer solutions were subjected to pulsed ultrasound, leading to mechanically induced chain scission and molecular weight degradation. 19F NMR revealed that the new, mechanically generated end groups are trifluorovinyl ethers formed by cycloreversion of the PFCB groups, a process that differs from thermal degradation pathways. One consequence of the mechanochemical process is that the trifluorovinyl ether end groups can be remended simply by subjecting the polymer solution to the original polymerization conditions, that is, heating to >150 °C. Stereochemical changes in the PFCBs, in combination with radical trapping experiments, indicate that PFCB scission proceeds via a stepwise mechanism with a 1,4-diradical intermediate, offering a potential mechanism for localized functionalization and cross-linking in regions of high stress. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCISSION (Chemistry) KW - IONIZATION (Atomic physics) KW - POLYMER solutions KW - CROSSLINKING (Polymerization) KW - MOLECULAR weights N1 - Accession Number: 67435425; Klukovich, Hope M. 1 Kean, Zachary S. 1 Iacono, Scott T. 2 Craig, Stephen L. 1; Email Address: stephen.craig@duke.edu; Affiliation: 1: Department of Chemistry, Duke University, Durham, North Carolina 27708, United States 2: Department of Chemistry, United States Air Force Academy, Colorado Springs, Colorado 80840, United States; Source Info: 11/9/2011, Vol. 133 Issue 44, p17882; Subject Term: SCISSION (Chemistry); Subject Term: IONIZATION (Atomic physics); Subject Term: POLYMER solutions; Subject Term: CROSSLINKING (Polymerization); Subject Term: MOLECULAR weights; Number of Pages: 7p; Document Type: Article L3 - 10.1021/ja2074517 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67435425&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, B.A. AU - McNamara, J.J. AU - Spottswood, S.M. AU - Culler, A.J. T1 - The impact of flow induced loads on snap-through behavior of acoustically excited, thermally buckled panels JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2011/11/07/ VL - 330 IS - 23 M3 - Article SP - 5736 EP - 5752 SN - 0022460X AB - Abstract: The analysis, and ultimately the design, of air-breathing hypersonic cruise-type vehicles is hampered by the inability to accurately capture the coupled fluid–thermal–structure interactions. There are few laboratory experiments that have investigated the interactions of compliant surface panels and hypersonic flow. The vast majority of experimental studies are limited to replicating only parts of the physical mechanisms and couplings because of the difficulty in imposing the complete transient, hypersonic environment. Studies of hot-structures, thermal protection systems, or exotic material and structural configurations, typically neglect vibration induced fluctuating pressures, shock-boundary layer interaction, the effect of transition, and separated flow. Conversely, hypersonic wind-tunnel experiments purposely neglect the influence of non-rigid structure on the aforementioned high-speed flow effects in an effort to better understand the nature of the high-speed effects. The goal of this study is to implement a simple computational model that seeks to incorporate many of the fluid–thermal–structure interactions inherent in hypersonic flow. This is accomplished using simplified aerothermal and aerodynamic theories in conjunction with a simply supported von Kármán panel in cylindrical bending. Comparisons are made between the inclusion and exclusion of self-induced and forced fluctuating pressures, as well as the fidelity required in computing the temperature distributions. Results indicate that self-induced pressure fluctuations, which arise from interactions of a vibrating structure with an ambient mean flow, significantly impact the response of panels to random acoustic loadings. Additionally, the inclusion of forced fluctuating pressure loadings can significantly reduce the onset time of panel flutter. It is surmised that experimental investigations must combine thermal loads, as well as both forced and self-induced fluctuating pressures. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOADS (Mechanics) KW - FLUID dynamics KW - ACOUSTIC excitation KW - THERMAL analysis KW - BUCKLING (Mechanics) KW - HYPERSONIC aerodynamics KW - RESPIRATION KW - FLUID-structure interaction KW - TRANSIENTS (Dynamics) KW - SHOCK (Mechanics) N1 - Accession Number: 64872838; Miller, B.A. 1; Email Address: miller.3881@osu.edu McNamara, J.J. 1; Email Address: mcnamara.190@osu.edu Spottswood, S.M. 2; Email Address: Stephen.Spottswood@wpafb.af.mil Culler, A.J. 2; Email Address: Adam.Culler.ctr@wpafb.af.mil; Affiliation: 1: Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH 43210, USA 2: Structural Sciences Center, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Nov2011, Vol. 330 Issue 23, p5736; Subject Term: LOADS (Mechanics); Subject Term: FLUID dynamics; Subject Term: ACOUSTIC excitation; Subject Term: THERMAL analysis; Subject Term: BUCKLING (Mechanics); Subject Term: HYPERSONIC aerodynamics; Subject Term: RESPIRATION; Subject Term: FLUID-structure interaction; Subject Term: TRANSIENTS (Dynamics); Subject Term: SHOCK (Mechanics); Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.jsv.2011.06.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=64872838&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wisman, David AU - Ganguly, Biswa T1 - Flame-Front Visualization Using Argon–Oxygen Plasma Discharge. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2066 EP - 2067 SN - 00933813 AB - The emission from a pulsed point-to-plane corona discharge is used to image flame reaction zones with high temporal resolution. An \Ar\/O2 gas mixture is used as an oxidant, allowing for the initiation of the corona discharge at lower applied voltages than it is possible in an air discharge while maintaining similar pulsed plasma current. The lower operating voltages reduce the amount of random streamer strikes and thus increase the clarity of the plasma emission images. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARGON KW - GLOW discharges KW - PLASMA (Ionized gases) KW - EMISSIONS (Air pollution) KW - FLOW visualization KW - GAS flow KW - COMBUSTION KW - Argon KW - Broadband communication KW - Combustion KW - Corona KW - corona discharge KW - Discharges KW - flow visualization KW - Plasmas KW - Streaming media KW - Visualization N1 - Accession Number: 67086389; Wisman, David 1 Ganguly, Biswa 2; Affiliation: 1: Aerospace Power and Propulsion Technologies Division, UES Inc., Dayton , OH, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2066; Subject Term: ARGON; Subject Term: GLOW discharges; Subject Term: PLASMA (Ionized gases); Subject Term: EMISSIONS (Air pollution); Subject Term: FLOW visualization; Subject Term: GAS flow; Subject Term: COMBUSTION; Author-Supplied Keyword: Argon; Author-Supplied Keyword: Broadband communication; Author-Supplied Keyword: Combustion; Author-Supplied Keyword: Corona; Author-Supplied Keyword: corona discharge; Author-Supplied Keyword: Discharges; Author-Supplied Keyword: flow visualization; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Streaming media; Author-Supplied Keyword: Visualization; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2011.2138165 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67086389&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McHarg, Matthew G. AU - Stenbaek-Nielsen, Hans C. AU - Kanmae, Takeshi AU - Haaland, Ryan K. T1 - High-Speed Imaging of Sprite Streamers. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2266 EP - 2267 SN - 00933813 AB - The spatial and temporal developments of sprite streamers in the mesosphere are discussed in the context of the data recorded on August 27, 2009. Streamers initiate at approximately 75 km in altitude and are seen to propagate first downward and subsequently upward. Streamer splitting is observed as the streamers propagate. The streamer tips are approximately three times brighter than the planet Jupiter. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA stability KW - MESOSPHERE KW - STREAMING technology (Telecommunications) KW - PLASMA diagnostics KW - APPROXIMATION theory KW - LIGHTNING KW - GEOPHYSICS KW - MEASUREMENT KW - JUPITER (Planet) KW - Geophysical measurements KW - Jupiter KW - Lightning KW - Plasma applications KW - plasma diagnostics KW - plasma stability KW - Sprites (computer) KW - Streaming media N1 - Accession Number: 67086801; McHarg, Matthew G. 1 Stenbaek-Nielsen, Hans C. 2 Kanmae, Takeshi 3 Haaland, Ryan K. 4; Affiliation: 1: Department of Physics, United States Air Force Academy, Colorado Springs, CO, USA 2: Geophysical Institute, University of Alaska, Fairbanks , AK, USA 3: Geophysical Institute, University of Alaska, Fairbanks, AK , USA 4: Department of Physics and Engineering, Fort Lewis College, Durango , CO, USA; Source Info: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2266; Subject Term: PLASMA stability; Subject Term: MESOSPHERE; Subject Term: STREAMING technology (Telecommunications); Subject Term: PLASMA diagnostics; Subject Term: APPROXIMATION theory; Subject Term: LIGHTNING; Subject Term: GEOPHYSICS; Subject Term: MEASUREMENT; Subject Term: JUPITER (Planet); Author-Supplied Keyword: Geophysical measurements; Author-Supplied Keyword: Jupiter; Author-Supplied Keyword: Lightning; Author-Supplied Keyword: Plasma applications; Author-Supplied Keyword: plasma diagnostics; Author-Supplied Keyword: plasma stability; Author-Supplied Keyword: Sprites (computer); Author-Supplied Keyword: Streaming media; NAICS/Industry Codes: 518210 Data Processing, Hosting, and Related Services; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2011.2165299 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67086801&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kuo, Spencer P. AU - Pedersen, Todd AU - Mills, Travis T1 - Two-Dimensional Distribution of Atomic-Oxygen Multiplet Radiation Produced by an Air-Plasma Torch. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2282 EP - 2283 SN - 00933813 AB - A pen-size low-temperature air-plasma torch is designed for dental applications. A narrow-band-filtered charge-coupled-device camera is used to record the 2-D distribution of the intensities of 777.4-nm emissions from the 5P state of atomic oxygen produced in the plasma effluent of the torch. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA jets KW - OXYGEN KW - RADIATION KW - TEMPERATURE control KW - PLASMA (Ionized gases) KW - PLASMA dynamics KW - AIRCRAFT exhaust emissions KW - Air-plasma torch KW - Apertures KW - Atomic measurements KW - atomic-oxygen multiplet radiation KW - Cameras KW - Electrodes KW - microbial biofilm KW - Plasma measurements KW - Plasmas KW - Sensitivity N1 - Accession Number: 67086550; Kuo, Spencer P. 1 Pedersen, Todd 2 Mills, Travis 2; Affiliation: 1: Department of Electrical and Computer Engineering, Polytechnic Institute of New York University , Brooklyn, NY, USA 2: Air Force Research Laboratory/Research Vehicles, Battle Space Center of Excellence, and Ionosphere Hazard (AFRL/RVBXI), Hanscom Air Force Base, MA, USA; Source Info: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2282; Subject Term: PLASMA jets; Subject Term: OXYGEN; Subject Term: RADIATION; Subject Term: TEMPERATURE control; Subject Term: PLASMA (Ionized gases); Subject Term: PLASMA dynamics; Subject Term: AIRCRAFT exhaust emissions; Author-Supplied Keyword: Air-plasma torch; Author-Supplied Keyword: Apertures; Author-Supplied Keyword: Atomic measurements; Author-Supplied Keyword: atomic-oxygen multiplet radiation; Author-Supplied Keyword: Cameras; Author-Supplied Keyword: Electrodes; Author-Supplied Keyword: microbial biofilm; Author-Supplied Keyword: Plasma measurements; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Sensitivity; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2011.2155089 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67086550&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Urabe, Keiichiro AU - Sands, Brian L. AU - Sakai, Osamu AU - Ganguly, Biswa N. T1 - Temporally Resolved Imaging of Jet-Type Dielectric Barrier Discharge Using He and Ar/Acetone Crossed Gas Flows. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2294 EP - 2295 SN - 00933813 AB - We report on temporally resolved images in a jet-type dielectric barrier discharge with two crossed gas flows obtained by a spectrally filtered intensified charge-coupled device (ICCD) camera. The crossed-flow configuration of He and Ar gases and a small acetone impurity added into the Ar flow simulated a discharge configuration and an organic precursor used for the practical application of material processing, respectively. From the ICCD images, streamer and transient glow discharges could be distinguished between the electrode and the substrate. Filtered emission from excited \N2^{+}, CH, \C2, He, and Ar also revealed the excitation and decomposition processes in the discharge. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GLOW discharges KW - GAS flow KW - ACETONE KW - ELECTRODES KW - DECOMPOSITION (Chemistry) KW - PLASMA (Ionized gases) KW - ELECTRON tubes KW - Argon KW - Atmospheric measurements KW - Atmospheric-pressure plasma jet (APPJ) KW - dielectric barrier discharge (DBD) KW - Discharges KW - Electron tubes KW - Helium KW - Plasmas KW - temporally resolved imaging KW - Transient analysis N1 - Accession Number: 67086329; Urabe, Keiichiro 1 Sands, Brian L. 2 Sakai, Osamu 1 Ganguly, Biswa N. 3; Affiliation: 1: Department of Electronic Science and Engineering, Kyoto University, Kyoto, Japan 2: UES Inc., Dayton, USA 3: Air Force Research Laboratory, Dayton, OH, USA; Source Info: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2294; Subject Term: GLOW discharges; Subject Term: GAS flow; Subject Term: ACETONE; Subject Term: ELECTRODES; Subject Term: DECOMPOSITION (Chemistry); Subject Term: PLASMA (Ionized gases); Subject Term: ELECTRON tubes; Author-Supplied Keyword: Argon; Author-Supplied Keyword: Atmospheric measurements; Author-Supplied Keyword: Atmospheric-pressure plasma jet (APPJ); Author-Supplied Keyword: dielectric barrier discharge (DBD); Author-Supplied Keyword: Discharges; Author-Supplied Keyword: Electron tubes; Author-Supplied Keyword: Helium; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: temporally resolved imaging; Author-Supplied Keyword: Transient analysis; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 327215 Glass Product Manufacturing Made of Purchased Glass; NAICS/Industry Codes: 327212 Other Pressed and Blown Glass and Glassware Manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 327214 Glass manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2011.2111389 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67086329&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Leiweke, Robert J. AU - Sands, Brian L. AU - Ganguly, Biswa N. T1 - Effect of Gas Mixture on Plasma Jet Discharge Morphology. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2304 EP - 2305 SN - 00933813 AB - The morphology of plasma emission from a streamerlike atmospheric pressure plasma jet initiated inside a glass capillary has been measured with a high spatial resolution for a gas flow of pure helium and He with a 5% Ar admixture using 5-ns time-gated intensified charge-coupled device imaging. In the pure helium plasma jet, emission remains annular and converges gradually along the core gas–air interface. With a 5% argon admixture, however, the plasma emission is initially annular inside the glass capillary but converges to the flow axis within 5 mm outside the capillary tip. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS mixtures KW - PLASMA jets KW - GLOW discharges KW - INDUCTIVELY coupled plasma atomic emission spectrometry KW - ATMOSPHERIC pressure KW - ARGON plasmas KW - Argon KW - Atmospheric pressure plasma jet KW - discharge morphology KW - Discharges KW - Helium KW - Logic gates KW - Morphology KW - Plasmas KW - spatiotemporally resolved imaging KW - Streaming media N1 - Accession Number: 67086393; Leiweke, Robert J. 1 Sands, Brian L. 1 Ganguly, Biswa N. 2; Affiliation: 1: UES, Inc., Dayton, USA 2: Air Force Research Laboratory, Dayton, OH, USA; Source Info: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2304; Subject Term: GAS mixtures; Subject Term: PLASMA jets; Subject Term: GLOW discharges; Subject Term: INDUCTIVELY coupled plasma atomic emission spectrometry; Subject Term: ATMOSPHERIC pressure; Subject Term: ARGON plasmas; Author-Supplied Keyword: Argon; Author-Supplied Keyword: Atmospheric pressure plasma jet; Author-Supplied Keyword: discharge morphology; Author-Supplied Keyword: Discharges; Author-Supplied Keyword: Helium; Author-Supplied Keyword: Logic gates; Author-Supplied Keyword: Morphology; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: spatiotemporally resolved imaging; Author-Supplied Keyword: Streaming media; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2011.2139228 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67086393&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, Xing AU - Hammack, Stephen AU - Carter, Campbell AU - Lee, Tonghun T1 - Laser Diagnostic Imaging of Energetically Enhanced Flames Using Direct Microwave Plasma Coupling. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2354 EP - 2355 SN - 00933813 AB - Quantitative images of temperature and hydroxyl (OH) concentrations are presented in plasma-enhanced flames, where a nonthermal microwave plasma discharge is coupled directly with the reaction zone of the flame. The plasma jet is generated through a novel microwave (2.45 GHz) waveguide based a coaxial reactor system. Planar laser-induced fluorescence is used to generate the OH fields, and planar Rayleigh scattering thermometry is used for the temperature. Plasma-enhanced flames present new possibilities for ignition and flame holding under harsh operating conditions, including stabilization of combustion in hypersonic flame conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER beams KW - FLUORESCENCE KW - MICROWAVE plasmas KW - RAYLEIGH scattering KW - MASERS KW - MICROWAVE imaging KW - NONEQUILIBRIUM plasmas KW - COMBUSTION gases KW - PLASMA jets KW - Combustion KW - Discharges KW - Laser-induced fluorescence KW - Masers KW - Microwave imaging KW - nonequilibrium microwave plasma KW - Plasma temperature KW - plasma-enhanced combustion KW - Rayleigh scattering N1 - Accession Number: 67086436; Rao, Xing 1 Hammack, Stephen 2 Carter, Campbell 3 Lee, Tonghun 4; Affiliation: 1: Rare Isotope Beams, Michigan State University, East Lansing, MI , USA 2: Department of Mechanical Engineering, Michigan State University, East Lansing, MI, USA 3: U.S Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 4: Department of Mechanical Engineering, Michigan State University, East Lansing , MI, USA; Source Info: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2354; Subject Term: LASER beams; Subject Term: FLUORESCENCE; Subject Term: MICROWAVE plasmas; Subject Term: RAYLEIGH scattering; Subject Term: MASERS; Subject Term: MICROWAVE imaging; Subject Term: NONEQUILIBRIUM plasmas; Subject Term: COMBUSTION gases; Subject Term: PLASMA jets; Author-Supplied Keyword: Combustion; Author-Supplied Keyword: Discharges; Author-Supplied Keyword: Laser-induced fluorescence; Author-Supplied Keyword: Masers; Author-Supplied Keyword: Microwave imaging; Author-Supplied Keyword: nonequilibrium microwave plasma; Author-Supplied Keyword: Plasma temperature; Author-Supplied Keyword: plasma-enhanced combustion; Author-Supplied Keyword: Rayleigh scattering; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2011.2148180 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67086436&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pedersen, Todd R. AU - Holmes, Jeffrey M. AU - Gustavsson, Bjorn AU - Mills, Travis J. T1 - Multisite Optical Imaging of Artificial Ionospheric Plasmas. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2704 EP - 2705 SN - 00933813 AB - Artificial ionospheric plasmas are formed on the bottom side of the natural ionospheric F region during high-power high-frequency (HF) heating experiments and descend to altitudes as low as 140 km before disappearing. Optical emissions produced during these events often exhibit bull's-eye structures, where the artificial plasma is thought to form a central spot that diverts or blocks HF waves to form an empty ring of emissions from the natural ionosphere at higher altitudes. We present multisite image data showing that, in some cases, both the spot and ring represent distinct artificial plasma layers. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL detectors KW - PLASMA (Ionized gases) KW - PLASMA density KW - F region KW - INDUCTION heating KW - HAFNIUM KW - UPPER atmosphere KW - ALTITUDES KW - PIXELS KW - Hafnium KW - Image edge detection KW - Ionosphere KW - optical imaging KW - Optical transmitters KW - Pixel KW - plasma density KW - Plasmas KW - radio propagation KW - Stimulated emission N1 - Accession Number: 67086461; Pedersen, Todd R. 1 Holmes, Jeffrey M. 1 Gustavsson, Bjorn 2 Mills, Travis J. 1; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB , MA, USA 2: University of Southampton, Southampton, U.K.; Source Info: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2704; Subject Term: OPTICAL detectors; Subject Term: PLASMA (Ionized gases); Subject Term: PLASMA density; Subject Term: F region; Subject Term: INDUCTION heating; Subject Term: HAFNIUM; Subject Term: UPPER atmosphere; Subject Term: ALTITUDES; Subject Term: PIXELS; Author-Supplied Keyword: Hafnium; Author-Supplied Keyword: Image edge detection; Author-Supplied Keyword: Ionosphere; Author-Supplied Keyword: optical imaging; Author-Supplied Keyword: Optical transmitters; Author-Supplied Keyword: Pixel; Author-Supplied Keyword: plasma density; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: radio propagation; Author-Supplied Keyword: Stimulated emission; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2011.2151209 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67086461&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liu, Ningyu AU - Pasko, Victor P. AU - Stenbaek-Nielsen, Hans C. AU - McHarg, Matthew G. T1 - Sprite Streamers Imaged at Different Exposure Times. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2710 EP - 2711 SN - 00933813 AB - This paper investigates the appearance of sprite streamer discharges imaged at different exposure times. Both observational and modeling results are presented to illustrate that the formation of luminous filamentary channels in sprites is caused by bright and fast-moving sprite streamer heads. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STREAMING technology (Telecommunications) KW - ATMOSPHERIC models KW - ACCELERATION (Mechanics) KW - ELECTRIC discharges KW - IMAGING systems KW - OPTICS KW - ELECTROSTATICS KW - Acceleration KW - Atmospheric modeling KW - Head KW - Image resolution KW - Optical emissions KW - Optical imaging KW - sprites KW - Sprites (computer) KW - streamer coronae KW - Streaming media N1 - Accession Number: 67086641; Liu, Ningyu 1 Pasko, Victor P. 2 Stenbaek-Nielsen, Hans C. 3 McHarg, Matthew G. 4; Affiliation: 1: Department of Physics and Space Sciences, Florida Institute of Technology, Melbourne, FL, USA 2: Department of Electrical Engineering, The Pennsylvania State University, University Park, PA, USA 3: Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK, USA 4: Department of Physics, United States Air Force Academy, CO, USA; Source Info: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2710; Subject Term: STREAMING technology (Telecommunications); Subject Term: ATMOSPHERIC models; Subject Term: ACCELERATION (Mechanics); Subject Term: ELECTRIC discharges; Subject Term: IMAGING systems; Subject Term: OPTICS; Subject Term: ELECTROSTATICS; Author-Supplied Keyword: Acceleration; Author-Supplied Keyword: Atmospheric modeling; Author-Supplied Keyword: Head; Author-Supplied Keyword: Image resolution; Author-Supplied Keyword: Optical emissions; Author-Supplied Keyword: Optical imaging; Author-Supplied Keyword: sprites; Author-Supplied Keyword: Sprites (computer); Author-Supplied Keyword: streamer coronae; Author-Supplied Keyword: Streaming media; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 518210 Data Processing, Hosting, and Related Services; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2011.2159517 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67086641&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Holmes, Jeffrey M. AU - Pedersen, Todd R. AU - Mills, Travis J. T1 - RF-Induced Airglow Observed Using Composite Multispectral Imaging. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2714 EP - 2715 SN - 00933813 AB - Atmospheric airglow emissions accompanying artificial ionospheric plasmas occur when the bottom-side ionospheric F-region is exposed to high-power HF heating. These artificial emissions are spectrally similar to those which occur naturally as airglow and aurora, yet they have spatiotemporal behavior commensurate with the heater beam geometry. Interesting dynamics of both the artificial plasma layers and optical emissions have been observed, namely, the presence of multiple descending plasma layers distributed in altitude, mesoscale (10–100 km) bullseye-type airglow emission patterns, and, finally, small-scale (\lesssim 10 km) field-aligned filaments. We present visualizations of such features exhibited by the heated region using composite multispectral imaging. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRGLOW KW - GREEN products KW - OPTICAL images KW - PLASMA density KW - IONOSPHERE KW - DYNAMICS KW - IMAGING systems KW - Green products KW - Heating KW - Image color analysis KW - Ionosphere KW - multispectral imaging KW - optical imaging KW - Optical transmitters KW - plasma density KW - Plasmas KW - Stimulated emission N1 - Accession Number: 67086690; Holmes, Jeffrey M. 1 Pedersen, Todd R. 2 Mills, Travis J. 2; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, NM, USA 2: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA , USA; Source Info: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2714; Subject Term: AIRGLOW; Subject Term: GREEN products; Subject Term: OPTICAL images; Subject Term: PLASMA density; Subject Term: IONOSPHERE; Subject Term: DYNAMICS; Subject Term: IMAGING systems; Author-Supplied Keyword: Green products; Author-Supplied Keyword: Heating; Author-Supplied Keyword: Image color analysis; Author-Supplied Keyword: Ionosphere; Author-Supplied Keyword: multispectral imaging; Author-Supplied Keyword: optical imaging; Author-Supplied Keyword: Optical transmitters; Author-Supplied Keyword: plasma density; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Stimulated emission; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2011.2158854 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67086690&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bernhardt, P. A. AU - Baumgardner, J. B. AU - Bhatt, A. N. AU - Erickson, P. J. AU - Larsen, M. F. AU - Pedersen, T. R. AU - Siefring, C. L. T1 - Optical Emissions Observed During the Charged Aerosol Release Experiment (CARE I) in the Ionosphere. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2774 EP - 2775 SN - 00933813 AB - The in-flight engine firing of solid rocket motors in the ionosphere produces an artificial dusty plasma. Optical emissions of sunlight scattered from the dust particles yield measurements of the dust location and flow velocities. Charging by ambient ionospheric electrons of the particulates yields dust particles that stream across the magnetic field lines. These exhaust particles initiate plasma turbulence in the ionosphere that can scatter radar waves. If the exhaust cloud itself passes over in situ particle or plasma wave detectors, measurements can be made of increased dusty plasma wave turbulence and plasma densities. To demonstrate long-range detection of rocket engine burns in the ionosphere, the Charged Aerosol Release Experiment (CARE I) was conducted in September 2009. Optical observations from CARE I provided measurements of both the dust particle distributions and the interactions of the molecular component of the rocket exhaust in the ionosphere. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROSOLS (Sprays) KW - IONOSPHERE KW - DUSTY plasmas KW - PHYSICS experiments KW - ROCKETS (Aeronautics) KW - RADAR KW - SCATTERING (Physics) KW - CLOUDS KW - Active experiments KW - Atmosphere KW - Chemicals KW - Clouds KW - dusty plasmas KW - Ionosphere KW - ionospheric modification KW - Radar KW - Radar scattering KW - Rockets N1 - Accession Number: 67086777; Bernhardt, P. A. 1 Baumgardner, J. B. 2 Bhatt, A. N. 3 Erickson, P. J. 3 Larsen, M. F. 4 Pedersen, T. R. 5 Siefring, C. L. 6; Affiliation: 1: Plasma Physics Division, Naval Research Laboratory, Washington , DC, USA 2: Department of Astronomy, Boston University, Boston, MA, USA 3: MIT Haystack Observatory, Westford, MA, USA 4: Department of Physics and Astronomy, Clemson University, Clemson, SC, USA 5: Air Force Research Laboratory, Hanscom, AFB, MA, USA 6: Plasma Physics Division, Naval Research Laboratory, Washington, DC, USA; Source Info: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2774; Subject Term: AEROSOLS (Sprays); Subject Term: IONOSPHERE; Subject Term: DUSTY plasmas; Subject Term: PHYSICS experiments; Subject Term: ROCKETS (Aeronautics); Subject Term: RADAR; Subject Term: SCATTERING (Physics); Subject Term: CLOUDS; Author-Supplied Keyword: Active experiments; Author-Supplied Keyword: Atmosphere; Author-Supplied Keyword: Chemicals; Author-Supplied Keyword: Clouds; Author-Supplied Keyword: dusty plasmas; Author-Supplied Keyword: Ionosphere; Author-Supplied Keyword: ionospheric modification; Author-Supplied Keyword: Radar; Author-Supplied Keyword: Radar scattering; Author-Supplied Keyword: Rockets; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2011.2164944 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67086777&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hargus, William A. T1 - Laser-Induced-Fluorescence-Derived Hall Effect Thruster Ion Velocity Distribution Visualization. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2918 EP - 2919 SN - 00933813 AB - Laser-induced fluorescence is used to measure ion velocity distributions in a Hall effect thruster plume. Images of ion velocity scaled to fluorescence peak magnitude provide a graphical illustration of the complex interactions between accelerated ion populations. Both axial and radial velocities are sampled at a single cross section approximately 0.6 diameters downstream of the thruster exit. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HALL effect devices KW - COLLOID thrusters KW - FLUORESCENCE spectroscopy KW - CROSS-sectional method KW - SPACE flight propulsion systems KW - DIAMETER (Geometry) KW - Acceleration KW - Hall effect KW - Hall effect thruster KW - Ions KW - laser-induced fluorescence (LIF) KW - Plasma measurements KW - Plasmas KW - Propulsion KW - spacecraft propulsion KW - velocity distribution KW - Velocity measurement N1 - Accession Number: 67086367; Hargus, William A. 1; Affiliation: 1: Spacecraft Propulsion Branch of the Air Force Research Laboratory, Edwards Air Force Base , CA, USA; Source Info: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2918; Subject Term: HALL effect devices; Subject Term: COLLOID thrusters; Subject Term: FLUORESCENCE spectroscopy; Subject Term: CROSS-sectional method; Subject Term: SPACE flight propulsion systems; Subject Term: DIAMETER (Geometry); Author-Supplied Keyword: Acceleration; Author-Supplied Keyword: Hall effect; Author-Supplied Keyword: Hall effect thruster; Author-Supplied Keyword: Ions; Author-Supplied Keyword: laser-induced fluorescence (LIF); Author-Supplied Keyword: Plasma measurements; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Propulsion; Author-Supplied Keyword: spacecraft propulsion; Author-Supplied Keyword: velocity distribution; Author-Supplied Keyword: Velocity measurement; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2011.2132149 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67086367&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liu, David AU - Huffman, Richard E. AU - Branam, Richard D. AU - Hargus, William A. T1 - Ultrahigh-Speed Imaging of Hall-Thruster Discharge Oscillations With Krypton Propellant. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2011/11/03/Nov2011 Part 1 Part 1 VL - 39 IS - 11 M3 - Article SP - 2926 EP - 2927 SN - 00933813 AB - The discharge oscillations of a 200-W Hall thruster, with krypton propellant, was captured optically with an ultrahigh-speed camera providing information up to 500 kHz. The sequential images provide a temporal 2-D description of the plasma field, which illustrate the direct emission (i.e., visible light emitted by the plasma discharge) of the plasma increasing and decreasing within the thruster channel. These periodic fluctuations of intensity have a frequency of 31 kHz, which is 10% less than the measured breathing-mode frequency utilizing xenon propellant under the same conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH-speed photography KW - KRYPTON KW - PROPELLANTS KW - PLASMA oscillations KW - GLOW discharges KW - FLUCTUATIONS (Physics) KW - PLASMA instabilities KW - FREQUENCIES of oscillating systems -- Measurement KW - Breathing modes KW - Discharges KW - Frequency measurement KW - Hall thrusters KW - Ionization KW - optical emission KW - Oscillators KW - plasma instability KW - Plasmas KW - Propulsion KW - Xenon N1 - Accession Number: 67086479; Liu, David 1 Huffman, Richard E. 1 Branam, Richard D. 1 Hargus, William A. 2; Affiliation: 1: Air Force Institute of Technology, Department of Aeronautical and Astronautical Engineering, Wright–Patterson Air Force Base, USA 2: Air Force Research Laboratory, Propulsion Directorate, Edwards Air Force Base, CA, USA; Source Info: Nov2011 Part 1 Part 1, Vol. 39 Issue 11, p2926; Subject Term: HIGH-speed photography; Subject Term: KRYPTON; Subject Term: PROPELLANTS; Subject Term: PLASMA oscillations; Subject Term: GLOW discharges; Subject Term: FLUCTUATIONS (Physics); Subject Term: PLASMA instabilities; Subject Term: FREQUENCIES of oscillating systems -- Measurement; Author-Supplied Keyword: Breathing modes; Author-Supplied Keyword: Discharges; Author-Supplied Keyword: Frequency measurement; Author-Supplied Keyword: Hall thrusters; Author-Supplied Keyword: Ionization; Author-Supplied Keyword: optical emission; Author-Supplied Keyword: Oscillators; Author-Supplied Keyword: plasma instability; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Propulsion; Author-Supplied Keyword: Xenon; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2011.2146282 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67086479&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, S.I. AU - Dimiduk, D.M. AU - Parthasarathy, T.A. AU - El-Awady, J. AU - Woodward, C. AU - Uchic, M.D. T1 - Calculations of intersection cross-slip activation energies in fcc metals using nudged elastic band method JO - Acta Materialia JF - Acta Materialia Y1 - 2011/11// VL - 59 IS - 19 M3 - Article SP - 7135 EP - 7144 SN - 13596454 AB - Abstract: The nudged elastic band (NEB) method is used to evaluate activation energies for dislocation intersection cross-slip in face-centered cubic (fcc) nickel and copper, to extend our prior work which used an approximate method. In this work we also extend the study by including Hirth locks (HL) in addition to Lomer–Cottrell locks and glide locks (GL). Using atomistic (molecular statics) simulations with embedded atom potentials we evaluated the activation barrier for a dislocation to transform from fully residing on the glide plane to fully residing on the cross-slip plane when intersecting a 120° forest dislocation in both Ni and Cu. The initial separation between the screw and the intersecting dislocation on the (111) glide plane is varied to find a minimum in the activation energy. The NEB method gives energies that are ∼10% lower than those reported in our prior work. It is estimated that the activation energies for cross-slip from the fully glide plane state to the partially cross-slipped state at the 120° intersection forming GL in Ni and Cu are ∼0.47 and ∼0.65eV, respectively, and from the fully cross-slip plane state to the partially cross-slipped state forming LC are ∼0.68 and ∼0.67eV. The activation energies for cross-slip from the fully glide plane state to the partially cross-slipped state at the 120° intersection forming HL in Ni and Cu are estimated to be ∼0.09 and ∼0.31eV, respectively. These values are a factor of 3–20 lower than the activation energy for bulk cross-slip in Ni and, a factor of 2–6 lower than the activation energy for cross-slip in Cu estimated by Friedel–Escaig analysis. These results suggest that cross-slip should nucleate preferentially at selected screw dislocation intersections in fcc materials and the activation energies for such mechanisms are also a function of stacking fault energy. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISLOCATIONS in metals KW - ELASTICITY KW - APPROXIMATION theory KW - COPPER KW - NICKEL KW - NUMERICAL calculations KW - Activation energy KW - Copper KW - Cross-slip KW - Nickel KW - Nudged elastic band method N1 - Accession Number: 66413524; Rao, S.I. 1; Email Address: satish.rao@wpafb.af.mil Dimiduk, D.M. 2 Parthasarathy, T.A. 1 El-Awady, J. 3 Woodward, C. 2 Uchic, M.D. 2; Affiliation: 1: UES Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432-1894, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright-Patterson AFB, OH 45433-7817, USA 3: Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA; Source Info: Nov2011, Vol. 59 Issue 19, p7135; Subject Term: DISLOCATIONS in metals; Subject Term: ELASTICITY; Subject Term: APPROXIMATION theory; Subject Term: COPPER; Subject Term: NICKEL; Subject Term: NUMERICAL calculations; Author-Supplied Keyword: Activation energy; Author-Supplied Keyword: Copper; Author-Supplied Keyword: Cross-slip; Author-Supplied Keyword: Nickel; Author-Supplied Keyword: Nudged elastic band method; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.actamat.2011.08.029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66413524&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Culler, Adam J. AU - McNamara, Jack J. T1 - Impact of Fluid-Thermal-Structural Coupling on Response Prediction of Hypersonic Skin Panels. JO - AIAA Journal JF - AIAA Journal Y1 - 2011/11// VL - 49 IS - 11 M3 - Article SP - 2393 EP - 2406 SN - 00011452 AB - The goal of the United States Air Force to field durable platforms capable of sustained hypersonic flight and responsive access to space depends on the ability to predict the response and the life of structures under combined aerothermal and aeropressure loading. However, current predictive capabilities are limited for these conditions due in part to the inability to seamlessly address fluid-thermal-structural interactions. This study aims to quantify the significance of a frequently neglected interaction, namely: the mutual coupling of structural deformation and aerodynamic heating, on response prediction. The quasistatic response of a carbon-carbon skin panel is investigated. It is found that the significance of this coupling depends largely on the in-plane boundary conditions, since increasing resistance to thermal expansion results in buckling and increasing deflections into the flow. Including these deformations in aerodynamic heating results in O(10%) increase in peak temperature and O(100%) increase in surface ply failure index for deflections O(1%) of panel length. In these cases, the locations of peak temperatures and stresses are significantly altered. Finally, neglecting deformations in the aeroheating analysis results in the prediction of snap-through for a gradual heating trajectory, whereas, inclusion leads to a higher mode dominated, dynamically stable response. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERSONIC aerodynamics KW - RESEARCH KW - AERODYNAMIC heating KW - MACH number KW - BUCKLING (Mechanics) KW - THERMAL expansion KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 67361085; Culler, Adam J. 1 McNamara, Jack J. 2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Ohio State University, Columbus, Ohio 43210; Source Info: Nov2011, Vol. 49 Issue 11, p2393; Subject Term: HYPERSONIC aerodynamics; Subject Term: RESEARCH; Subject Term: AERODYNAMIC heating; Subject Term: MACH number; Subject Term: BUCKLING (Mechanics); Subject Term: THERMAL expansion; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 14p; Document Type: Article L3 - 10.2514/1.J050617 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67361085&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gardner, Chad M. AU - Rothwell, Edward J. AU - Kempel, Leo C. AU - Hejase, Jose A. AU - Ouedraogo, Raoul O. AU - Schneider, Stephen W. T1 - Effect of Curvature on the Performance of a Cylindrically-Conformal Cavity-Backed E-patch Antenna. JO - Applied Computational Electromagnetics Society Journal JF - Applied Computational Electromagnetics Society Journal Y1 - 2011/11// VL - 26 IS - 11 M3 - Article SP - 930 EP - 936 SN - 10544887 AB - The behavior of a cavity-backed E-patch antenna placed conformal to a cylindrical conducting surface is explored through simulations and experiment to determine the effects of curvature on antenna performance. It is shown that introducing a cavity backing reduces the bandwidth of an E-patch, but that the curvature of a conformal antenna partly compensates for the loss of performance. It is further shown that the curvature of a conformal antenna strongly affects both the co- and cross-polarization gain patterns. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Computational Electromagnetics Society Journal is the property of Applied Computational Electromagnetics Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNA radiation patterns KW - ELECTROMAGNETIC fields KW - BANDWIDTHS KW - CURVATURE KW - DIGITAL communications KW - DIELECTRICS KW - Aircraft antennas KW - antenna measurements KW - antenna radiation patterns KW - conformal antennas KW - multifrequency antennas N1 - Accession Number: 78856788; Gardner, Chad M. 1; Email Address: chadula@gmail.com Rothwell, Edward J. 1; Email Address: rothwell@egr.msu.edu Kempel, Leo C. 1; Email Address: kempel@egr.msu.edu Hejase, Jose A. 1; Email Address: hejasejo@msu.edu Ouedraogo, Raoul O. 1; Email Address: ojunior82@grnail.com Schneider, Stephen W. 2; Email Address: Stephen.Schneider@wpafb.af.mil; Affiliation: 1: Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824, USA 2: Air Force Research Laboratory, Wright Patterson AFB, OH 45433, USA; Source Info: Nov2011, Vol. 26 Issue 11, p930; Subject Term: ANTENNA radiation patterns; Subject Term: ELECTROMAGNETIC fields; Subject Term: BANDWIDTHS; Subject Term: CURVATURE; Subject Term: DIGITAL communications; Subject Term: DIELECTRICS; Author-Supplied Keyword: Aircraft antennas; Author-Supplied Keyword: antenna measurements; Author-Supplied Keyword: antenna radiation patterns; Author-Supplied Keyword: conformal antennas; Author-Supplied Keyword: multifrequency antennas; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78856788&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Branaghan, Russell J. AU - Covas-Smith, Christine M. AU - Jackson, Kenneth D. AU - Eidman, Craig T1 - Using knowledge structures to redesign an instructor–operator station JO - Applied Ergonomics JF - Applied Ergonomics Y1 - 2011/11// VL - 42 IS - 6 M3 - Article SP - 934 EP - 940 SN - 00036870 AB - Abstract: Frequently, user interface (UI) designers must choose between modifying an established, but suboptimal and familiar, UI or to avoid such changes. Changing the UI’s, organization may frustrate users who have become familiar with the original design, whereas failing to make changes may force users to perform at an unsatisfactory level. This paper presents two studies that investigate whether users familiar with a poorly designed UI would find items faster, and prefer a reorganized UI that conformed to domain expert knowledge, or would their familiarity with the original UI yield faster performance and higher satisfaction. This paper describes activities to redesign a menu structure in a simulator instructor–operator station (IOS) using hierarchical card sorting and cluster analysis (). This analysis was used to reorganize the menu structure to reflect the knowledge representations of domain experts in accordance with the principle of proximity compatibility (). The new design was validated with a separate set of users by a reaction time experiment and preference selection. [Copyright &y& Elsevier] AB - Copyright of Applied Ergonomics is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - USER interfaces (Computer systems) KW - MENU design (Printed ephemera) KW - ENGINEERING design KW - CLUSTER analysis (Statistics) KW - SIMULATION methods & models KW - MATHEMATICAL models KW - THEORY of knowledge KW - Mental models KW - Menu design KW - Simulation training N1 - Accession Number: 62964287; Branaghan, Russell J. 1; Email Address: Russ.branaghan@asu.edu Covas-Smith, Christine M. 1,2 Jackson, Kenneth D. 1,2 Eidman, Craig 2; Affiliation: 1: Arizona State University, AZ, USA 2: Air Force Research Laboratory, Mesa, AZ, USA; Source Info: Nov2011, Vol. 42 Issue 6, p934; Subject Term: USER interfaces (Computer systems); Subject Term: MENU design (Printed ephemera); Subject Term: ENGINEERING design; Subject Term: CLUSTER analysis (Statistics); Subject Term: SIMULATION methods & models; Subject Term: MATHEMATICAL models; Subject Term: THEORY of knowledge; Author-Supplied Keyword: Mental models; Author-Supplied Keyword: Menu design; Author-Supplied Keyword: Simulation training; NAICS/Industry Codes: 541330 Engineering Services; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.apergo.2011.03.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62964287&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Luo, H. AU - Lu, H. AU - Cooper, W. AU - Komanduri, R. T1 - Effect of Mass Density on the Compressive Behavior of Dry Sand Under Confinement at High Strain Rates. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2011/11// VL - 51 IS - 9 M3 - Article SP - 1499 EP - 1510 SN - 00144851 AB - Dynamic compressive behavior of dry quartz sand (Quikrete #1961 sand quarried in Pensacola, FL) under confinement was characterized using a modified long split Hopkinson pressure bar (SHPB). Sand grains were confined inside a hollow cylinder of hardened steel and capped by cemented tungsten carbide cylindrical rods. This assembly was subjected to repeated shaking to consolidate sand to attain precise bulk mass densities. It is then sandwiched between incident and transmission bars on SHPB for dynamic compression measurements. Sand specimens of five initial mass densities, namely, 1.51, 1.57, 1.63, 1.69, and 1.75 g/cm, were characterized at high strain rates near 600 s, to determine the volumetric and deviatoric behaviors through measurements of both axial and transverse responses of a cylindrical sand sample under confinement. The stress-strain relationship was found to follow a power law relationship with the sand initial bulk density, with an exponent of 8.25, indicating a behavior highly sensitive to mass density. The energy absorption density and compressibility of sand were determined as a function of axial stress. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPRESSIBILITY KW - HYDROSTATIC pressure KW - ABSORPTION KW - PLASMA confinement KW - SAND KW - ENERGY level densities KW - Confinement KW - Dynamic compaction of sand KW - Hydrostatic pressure KW - Mass density KW - Modified split Hopkinson pressure bar (SHPB) N1 - Accession Number: 66303611; Luo, H. 1 Lu, H. 1; Email Address: hongbing.lu@utdallas.edu Cooper, W. 2 Komanduri, R. 3; Affiliation: 1: Department of Mechanical Engineering, the University of Texas at Dallas, Richardson 75080 USA 2: Air Force Research Laboratory, Eglin Air Force Base Valparaiso 32542 USA 3: School of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater 74078 USA; Source Info: Nov2011, Vol. 51 Issue 9, p1499; Subject Term: COMPRESSIBILITY; Subject Term: HYDROSTATIC pressure; Subject Term: ABSORPTION; Subject Term: PLASMA confinement; Subject Term: SAND; Subject Term: ENERGY level densities; Author-Supplied Keyword: Confinement; Author-Supplied Keyword: Dynamic compaction of sand; Author-Supplied Keyword: Hydrostatic pressure; Author-Supplied Keyword: Mass density; Author-Supplied Keyword: Modified split Hopkinson pressure bar (SHPB); NAICS/Industry Codes: 212321 Construction Sand and Gravel Mining; NAICS/Industry Codes: 416390 Other specialty-line building supplies merchant wholesalers; NAICS/Industry Codes: 423320 Brick, Stone, and Related Construction Material Merchant Wholesalers; NAICS/Industry Codes: 484222 Dry bulk materials trucking, local; NAICS/Industry Codes: 484232 Dry bulk materials trucking, long distance; Number of Pages: 12p; Document Type: Article L3 - 10.1007/s11340-011-9475-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66303611&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bohn, Matthew J. AU - Guiney, William AU - Lynch, Candace AU - Bliss, David F. T1 - Spectral Evidence of Si Complexes in HVPE-Grown GaAs. JO - IEEE Transactions on Semiconductor Manufacturing JF - IEEE Transactions on Semiconductor Manufacturing Y1 - 2011/11// VL - 24 IS - 4 M3 - Article SP - 519 EP - 522 SN - 08946507 AB - Evidence of Si complexes was discovered in low temperature photoluminescence (PL) spectra recorded from GaAs grown by hydride vapor phase epitaxy and were measured as a function of secondary HCl flow. In addition, time resolved PL of the samples measured long radiative lifetimes, substantiating the excellent quality of the crystalline growth. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Semiconductor Manufacturing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON compounds KW - METAL complexes KW - GALLIUM arsenide KW - CRYSTAL growth KW - LOW temperatures KW - PHOTOLUMINESCENCE KW - EPITAXY KW - Crystals KW - Epitaxial growth KW - GaAs KW - Gallium arsenide KW - HVPE KW - orientationally patterned KW - photoluminescence KW - Silicon KW - ultrafast N1 - Accession Number: 66964493; Bohn, Matthew J. 1 Guiney, William 2 Lynch, Candace 3 Bliss, David F. 4; Affiliation: 1: Air Force Institute of Technology, Wright-Patterson AFB, OH, USA 2: Rose-Hulman Institute of Technology, Terre Haute, IN, USA 3: Photonic Products Group, Inc., Northvale, NJ, USA 4: Air Force Research Laboratory, Hanscom AFB, MA, USA; Source Info: Nov2011, Vol. 24 Issue 4, p519; Subject Term: SILICON compounds; Subject Term: METAL complexes; Subject Term: GALLIUM arsenide; Subject Term: CRYSTAL growth; Subject Term: LOW temperatures; Subject Term: PHOTOLUMINESCENCE; Subject Term: EPITAXY; Author-Supplied Keyword: Crystals; Author-Supplied Keyword: Epitaxial growth; Author-Supplied Keyword: GaAs; Author-Supplied Keyword: Gallium arsenide; Author-Supplied Keyword: HVPE; Author-Supplied Keyword: orientationally patterned; Author-Supplied Keyword: photoluminescence; Author-Supplied Keyword: Silicon; Author-Supplied Keyword: ultrafast; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TSM.2011.2160300 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66964493&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tang, Jinshan AU - Liu, Xiaoming AU - Cheng, Huaining AU - Robinette, Kathleen M. T1 - Gender Recognition Using 3-D Human Body Shapes. JO - IEEE Transactions on Systems, Man & Cybernetics: Part C - Applications & Reviews JF - IEEE Transactions on Systems, Man & Cybernetics: Part C - Applications & Reviews Y1 - 2011/11// VL - 41 IS - 6 M3 - Article SP - 898 EP - 908 SN - 10946977 AB - Gender recognition has important applications in identity recognition, demographic survey, and human–computer interaction systems. In the past, gender recognition was based on 2-D images or videos, which has many limitations and disadvantages, such as low accuracy and sensitivity to the viewpoint of the camera and lighting conditions. In this paper, we investigate gender recognition using 3-D human body shapes. The 3-D human body shapes used for gender recognition were obtained by laser scanning. Different machine-learning algorithms and feature-extraction methods are investigated and analyzed in this paper. Experimental results show that the support vector machine (SVM) is the best classification algorithm, and the features represented using distributions of normals are very effective for gender recognition. Furthermore, Fourier descriptor (FD) is a robust method to analyze the breast regions and has great potential applications in 3-D human-body-shape-based biometrics. The research demonstrates that our shape-based gender recognition has achieved a very high recognition rate. The techniques provide effective ways for gender recognition and overcome some limitations in 2-D technologies. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Systems, Man & Cybernetics: Part C - Applications & Reviews is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GENDER KW - HUMAN-computer interaction KW - IDENTIFICATION -- Equipment & supplies KW - SUPPORT vector machines KW - THREE-dimensional imaging KW - 3-D human body shapes KW - Fourier descriptor (FD) KW - gender recognition KW - normal distribution KW - support vector machine (SVM) N1 - Accession Number: 66815460; Tang, Jinshan 1 Liu, Xiaoming 1 Cheng, Huaining 2 Robinette, Kathleen M. 2; Affiliation: 1: Department of Advanced Technologies , Alcorn State University, Alcorn State, MS, USA 2: Vulnerability Analysis Branch, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, USA; Source Info: Nov2011, Vol. 41 Issue 6, p898; Subject Term: GENDER; Subject Term: HUMAN-computer interaction; Subject Term: IDENTIFICATION -- Equipment & supplies; Subject Term: SUPPORT vector machines; Subject Term: THREE-dimensional imaging; Author-Supplied Keyword: 3-D human body shapes; Author-Supplied Keyword: Fourier descriptor (FD); Author-Supplied Keyword: gender recognition; Author-Supplied Keyword: normal distribution; Author-Supplied Keyword: support vector machine (SVM); Number of Pages: 11p; Document Type: Article L3 - 10.1109/TSMCC.2011.2104950 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66815460&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zens, Timothy AU - Becla, Piotr AU - Agarwal, Anuradha M. AU - Kimerling, Lionel C. AU - Drehman, Alvin T1 - Long wavelength infrared detection using amorphous InSb and InAs0.3Sb0.7 JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2011/11// VL - 334 IS - 1 M3 - Article SP - 84 EP - 89 SN - 00220248 AB - Abstract: The structural, electronic, and optical properties of amorphous InSb and InAs0.3Sb0.7 films deposited on Corning glass, Al2O3 CdZnTe, SiO2-Si, and CaF2 substrates by Radio Frequency (RF) magnetron sputtering have been studied as they relate to Mid and Long Wavelength Infrared (MWIR and LWIR) detection. Depositions at elevated substrate temperature and pressure of <10mTorr Ar showed an emergence of crystalline grains with strong X-ray diffraction peaks at the (111) and (220) orientations. Electronically, the amorphous InSb and InAs0.3Sb0.7 films deposited at 300K show hopping conduction with resistance in InSb ranging from 44 to 1.1E8Ω-cm at 300K and 84K, respectively. Optical analysis using Fourier transform infrared spectroscopy (FTIR) shows the absorption of these films has an absorption tail, which shows the differing activation energies in InSb and InAs0.3Sb0.7. Amorphous InSb and InAs0.3Sb0.7 films showed responsivity in excess of 100V/W for 6μm thick films held at 233K. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AMORPHOUS semiconductors KW - INDIUM antimonide crystals KW - MAGNETRON sputtering KW - ARSENATES KW - MOLECULAR structure KW - THIN films KW - FOURIER transform infrared spectroscopy KW - A3. Polycrystalline deposition KW - B1. Antimonides KW - B1. Arsenates KW - B2. Semiconducting ternary compounds KW - B3. Infrared devices N1 - Accession Number: 66235960; Zens, Timothy 1; Email Address: tzens@mit.edu Becla, Piotr 1 Agarwal, Anuradha M. 1 Kimerling, Lionel C. 1 Drehman, Alvin 2; Affiliation: 1: Microphotonics Center, Massachusetts Institute of Technology, Cambridge, MA 02139, USA 2: Air Force Research Laboratory, Hanscom Air Force Base, MA 01730, USA; Source Info: Nov2011, Vol. 334 Issue 1, p84; Subject Term: AMORPHOUS semiconductors; Subject Term: INDIUM antimonide crystals; Subject Term: MAGNETRON sputtering; Subject Term: ARSENATES; Subject Term: MOLECULAR structure; Subject Term: THIN films; Subject Term: FOURIER transform infrared spectroscopy; Author-Supplied Keyword: A3. Polycrystalline deposition; Author-Supplied Keyword: B1. Antimonides; Author-Supplied Keyword: B1. Arsenates; Author-Supplied Keyword: B2. Semiconducting ternary compounds; Author-Supplied Keyword: B3. Infrared devices; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325320 Pesticide and Other Agricultural Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jcrysgro.2011.08.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66235960&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Belletire, John L. AU - Schneider, Stefan AU - Shackelford, Scott A. AU - Peryshkov, Dmitry V. AU - Strauss, Steven H. T1 - Pairing heterocyclic cations with closo-dodecafluorododecaborate (2−): Synthesis of binary heterocyclium(1+) salts and a Ag4(heterocycle)84+ salt of B12F122− JO - Journal of Fluorine Chemistry JF - Journal of Fluorine Chemistry Y1 - 2011/11// VL - 132 IS - 11 M3 - Article SP - 925 EP - 936 SN - 00221139 AB - Abstract: Eight binary salts that pair triazolium(1+), imidazolium(1+), pyrimidinium(1+), or purinium(1+) cations with the icosahedral closo-dodecafluorododecaborate(2−) anion (B12F122−) were synthesized using open-air benchtop metathesis reactions in water or acetonitrile. The scale of the reactions varied from just milligrams to nearly one gram of the K2B12F12 starting material. Other reaction conditions, the scope of the reaction, and the solubilities for the new salts are discussed. Five [heterocyclium]2[B12F12] salts, which were obtained in yields ranging from 84% to 99%, displayed significantly higher densities than the corresponding previously reported analogous [heterocyclium]2[B12H12] and [heterocyclium][CB11H12] salts. A ninth high-density salt consisted of B12F122− paired with a complex Ag4(triazole)84+ cation. The structures of eight of the nine new compounds were determined by single-crystal X-ray diffraction analysis. The density of five [heterocyclium]2[B12F12] salts was found to increase approximately linearly as the distance between the five-membered-ring heterocyclium(1+) cation centroids decreased. This work demonstrates additional flexibility for the rational design of ionic structures with predictable properties, which will ultimately permit the tailoring of ingredient-response behavior. [Copyright &y& Elsevier] AB - Copyright of Journal of Fluorine Chemistry is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HETEROCYCLIC compounds KW - BORATES KW - BINARY metallic systems KW - SALTS KW - METATHESIS (Chemistry) KW - ACETONITRILE KW - CHEMICAL reactions KW - SILVER ions KW - Dodecafluorododecaborate KW - Heterocyclium KW - Icosahedral borane KW - Icosahedral carborane KW - Metathesis KW - Perfluoroborane N1 - Accession Number: 65346824; Belletire, John L. 1 Schneider, Stefan 2 Shackelford, Scott A. 2; Email Address: scott.shack@roadrunner.com Peryshkov, Dmitry V. 3 Strauss, Steven H. 3; Email Address: steven.strauss@colostate.edu; Affiliation: 1: ERC Inc., AFRL/RZSP, 10 East Saturn Blvd., Edwards AFB, CA 93524-7680, United States 2: Air Force Research Laboratory, AFRL/RZSP, 10 East Saturn Blvd., Edwards AFB, CA 92524-7680, United States 3: Department of Chemistry, Colorado State University, Ft. Collins, CO 80523, United States; Source Info: Nov2011, Vol. 132 Issue 11, p925; Subject Term: HETEROCYCLIC compounds; Subject Term: BORATES; Subject Term: BINARY metallic systems; Subject Term: SALTS; Subject Term: METATHESIS (Chemistry); Subject Term: ACETONITRILE; Subject Term: CHEMICAL reactions; Subject Term: SILVER ions; Author-Supplied Keyword: Dodecafluorododecaborate; Author-Supplied Keyword: Heterocyclium; Author-Supplied Keyword: Icosahedral borane; Author-Supplied Keyword: Icosahedral carborane; Author-Supplied Keyword: Metathesis; Author-Supplied Keyword: Perfluoroborane; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.jfluchem.2011.07.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65346824&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jauchem, James R. T1 - Author's Response. JO - Journal of Forensic Sciences (Wiley-Blackwell) JF - Journal of Forensic Sciences (Wiley-Blackwell) Y1 - 2011/11// VL - 56 IS - 6 M3 - Article SP - 1671 EP - 1672 SN - 00221198 AB - A letter to the editor is presented in response to the article "Commentary on: Jauchem J. Increased hematocrit after applications of conducted energy weapons (including TASER devices) to Sus scrofa," by D. M. Dawes, J. D. Ho, and J. R. Miner in the 2011 issue. KW - LETTERS to the editor KW - HEMATOCRIT KW - ELECTRONIC instruments N1 - Accession Number: 66905001; Jauchem, James R. 1; Email Address: james.r.jauchem.civ@mail.mil; Affiliation: 1: Senior Research Physiologist, Directed Energy Bio-Effects Division, 711th Human Performance Wing, U.S. Air Force Research Laboratory, 4141 Petroleum Road, Bldg 3260, Fort Sam Houston, TX 78234-2644.E-mail:; Source Info: Nov2011, Vol. 56 Issue 6, p1671; Subject Term: LETTERS to the editor; Subject Term: HEMATOCRIT; Subject Term: ELECTRONIC instruments; NAICS/Industry Codes: 334515 Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals; Number of Pages: 2p; Document Type: Article L3 - 10.1111/j.1556-4029.2011.01922.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66905001&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - SHIVELEY, A.R. AU - SHADE, P.A. AU - PILCHAK, A.L. AU - TILEY, J.S. AU - KERNS, R. T1 - A novel method for acquiring large-scale automated scanning electron microscope data. JO - Journal of Microscopy JF - Journal of Microscopy Y1 - 2011/11// VL - 244 IS - 2 M3 - Article SP - 181 EP - 186 PB - Wiley-Blackwell SN - 00222720 AB - Summary Recent software and hardware advances in the field of electron backscatter diffraction have led to an increase in the rate of data acquisition. Combining automated stage movements with conventional beam control have allowed researchers to collect data from significantly larger areas of samples than was previously possible. This paper describes a LabVIEW™ and AutoIT© code which allows for increased flexibility compared to commercially available software. The source code for this software has been made available in the online version of this paper. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microscopy is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCANNING electron microscopy KW - ELECTRONS -- Backscattering KW - COMPUTER software KW - AUTOMATION KW - COMPUTER input-output equipment KW - ACQUISITION of data KW - CONTROL theory (Mathematics) N1 - Accession Number: 66644641; SHIVELEY, A.R. 1,2 SHADE, P.A. 1,2 PILCHAK, A.L. 1,2 TILEY, J.S. 1 KERNS, R. 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH, U.S.A. 2: Universal Technology Corporation, Dayton, OH, U.S.A. 3: UES, Inc., Dayton, OH, U.S.A.; Source Info: Nov2011, Vol. 244 Issue 2, p181; Subject Term: SCANNING electron microscopy; Subject Term: ELECTRONS -- Backscattering; Subject Term: COMPUTER software; Subject Term: AUTOMATION; Subject Term: COMPUTER input-output equipment; Subject Term: ACQUISITION of data; Subject Term: CONTROL theory (Mathematics); NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); Number of Pages: 6p; Illustrations: 1 Color Photograph, 1 Black and White Photograph, 1 Illustration; Document Type: Article L3 - 10.1111/j.1365-2818.2011.03524.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66644641&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Foutch, Brian K. AU - Stringham, James M. AU - Lakshminarayanan, Vasuvedan T1 - A new quantitative technique for grading Farnsworth D-15 color panel tests. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2011/11// VL - 58 IS - 19/20 M3 - Article SP - 1755 EP - 1763 SN - 09500340 AB - There are three variables involved in modeling measurement errors – type, severity, and selectivity. Whereas clinicians typically utilize a graphical technique to grade color deficiencies based on D-15 panel tests, Vingrys and King-Smith developed a quantitative scoring technique for panel color tests, which models all three factors by utilizing an overall moment of inertia for color difference vectors (CDVs) calculated in 1976 CIELUV space. We propose a least squares analysis via linear regression of the errors (ΔU, ΔV) according to the following equation: ΔV = mΔU, where m = slope of best-fit line determined by linear regression. Error type is determined by the angular proximity of the best-fit line to known confusion axes representing protan, deutan, tritan or unspecified color defects. The severity is the sum of the CDV lengths of all errors made, and the selectivity is determined by the adjusted variance of the least squares fit. We determined normative threshold values for type, severity and selectivity by inspecting 142 cap arrangements with tentative diagnoses. We then analyzed 49 standard D-15 cap arrangements of subjects with definitive diagnoses to determine the sensitivity and specificity of our method to defect types. The results were then compared with those of Vingrys and King-Smith. Our linear regression technique provides an improved assessment of error arrangements that represent subtle unspecified color defects. However, our model appears too sensitive to atypical repositioning errors made when the majority of errors lie along known confusions. Used in conjunction with previous quantitative methods, linear regression by least squares proves a useful tool in the classification of errors of D-15 color panel tests. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VISION testing KW - COLOR vision KW - QUANTITATIVE research KW - GRADING (Commercial products) KW - ERRORS KW - LEAST squares KW - REGRESSION analysis KW - color panel test KW - color vision testing KW - least squares KW - linear regression N1 - Accession Number: 67457810; Foutch, Brian K. 1; Email Address: brian.foutch@us.af.mil Stringham, James M. 2 Lakshminarayanan, Vasuvedan 3,4; Affiliation: 1: Air Force Research Laboratory, Brooks City Base, USA 2: TASC Corporation, USA 3: School of Optometry and Departments of Physics and Electrical and Computer Engineering, University of Waterloo, Canada 4: Michigan Center for Theoretical Physics, University of Michigan, USA; Source Info: Nov2011, Vol. 58 Issue 19/20, p1755; Subject Term: VISION testing; Subject Term: COLOR vision; Subject Term: QUANTITATIVE research; Subject Term: GRADING (Commercial products); Subject Term: ERRORS; Subject Term: LEAST squares; Subject Term: REGRESSION analysis; Author-Supplied Keyword: color panel test; Author-Supplied Keyword: color vision testing; Author-Supplied Keyword: least squares; Author-Supplied Keyword: linear regression; Number of Pages: 9p; Illustrations: 5 Charts, 11 Graphs; Document Type: Article L3 - 10.1080/09500340.2011.573881 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67457810&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - HEIDLER, JEANNE T. T1 - Baring the Iron Hand: Discipline in the Union Army. JO - Journal of Southern History JF - Journal of Southern History Y1 - 2011/11// VL - 77 IS - 4 M3 - Book Review SP - 967 EP - 968 PB - Southern Historical Association SN - 00224642 AB - A review of the book "Baring the Iron Hand: Discipline in the Union Army," by Steven J. Ramold is presented. KW - HISTORY KW - NONFICTION KW - UNITED States KW - CIVIL War, 1861-1865 KW - RAMOLD, Steven J. KW - BARING the Iron Hand: Discipline in the Union Army (Book) N1 - Accession Number: 67551698; HEIDLER, JEANNE T. 1; Affiliation: 1: United States Air Force Academy; Source Info: Nov2011, Vol. 77 Issue 4, p967; Subject Term: HISTORY; Subject Term: NONFICTION; Subject Term: UNITED States; Subject Term: CIVIL War, 1861-1865; Reviews & Products: BARING the Iron Hand: Discipline in the Union Army (Book); People: RAMOLD, Steven J.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67551698&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Goodding, James C. AU - Ardelean, Emil V. AU - Babuşka, Vit AU - Robertson III, Lawrence M. AU - Lane, Steven A. T1 - Experimental Techniques and Structural Parameter Estimation Studies of Spacecraft Cables. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2011/11//Nov/Dec2011 VL - 48 IS - 6 M3 - Article SP - 942 EP - 957 SN - 00224650 AB - Signal and electrical power cables pose unique challenges to spacecraft structural design and are often poorly modeled or even neglected. The objective of this research was to develop test methods and analysis techniques to accurately model cable-loaded spacecraft, using linear finite element models. Test methods were developed to characterize cable extensional and bending properties when subjected to low-level lateral dynamic loads. Timoshenko beam theory, including shear and bending, was used to model cable lateral dynamics, and the model formulation applicability was validated through experiment. An algorithm was developed to estimate cable area moment of inertia and shear area factor, shear modulus product, from a single driving point mobility function. Test methods and the parameter estimation algorithm were validated, using metallic rod test specimens. Experiments were performed on cables of differing constructions and spans, to develop a database for finite element modeling validation experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles KW - ELECTRIC power KW - FINITE element method KW - NUMERICAL analysis KW - SHEAR (Mechanics) KW - ALGORITHMS KW - ESTIMATION theory N1 - Accession Number: 69834177; Goodding, James C. 1 Ardelean, Emil V. 2 Babuşka, Vit 3 Robertson III, Lawrence M. 4 Lane, Steven A.; Affiliation: 1: CSA Engineering, Albuquerque, New Mexico 87123 2: Schafer Corporation, Albuquerque, New Mexico 87106 3: Sandia National Laboratories, Albuquerque, New Mexico 87185 4: U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117; Source Info: Nov/Dec2011, Vol. 48 Issue 6, p942; Subject Term: SPACE vehicles; Subject Term: ELECTRIC power; Subject Term: FINITE element method; Subject Term: NUMERICAL analysis; Subject Term: SHEAR (Mechanics); Subject Term: ALGORITHMS; Subject Term: ESTIMATION theory; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 16p; Document Type: Article L3 - 10.2514/1.49346 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69834177&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coombs, Douglas M. AU - Goodding, James C. AU - Babuşka, Vit AU - Ardelean, Emil V. AU - Robertson, Lawrence M. AU - Lane, Steven A. T1 - Dynamic Modeling and Experimental Validation of a Cable-Loaded Panel. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2011/11//Nov/Dec2011 VL - 48 IS - 6 M3 - Article SP - 958 EP - 972 SN - 00224650 AB - Power and signal cable harnesses on spacecraft are often at 10% of the total mass and can be as much as 30%. These cable harnesses can impact the structural dynamics of spacecraft significantly, specifically by damping the response. Past efforts have looked at how to calculate cable properties and the validation of these cable models on one-dimensional beam structures with uniform cable lengths. This paper looks at how to extend that process to two-dimensional spacecraftlike panels with nonuniform cable lengths. A shear beam model is used for cable properties. Two methods of calculating the tiedown stiffness are compared. Of particular interest is whether or not handbooks of cable properties can be created ahead of time and applied with confidence. There are three frequency bands in which cable effects can be described. Before any cables become resonant, the cable effects are dominated by mass and static stiffness. After all the cables become resonant, the effect is dominated by increased damping in the structure. In between these two frequency cutoff points, there is a transition zone. The dynamic cable modeling method is validated as a distinct improvement over the lumped-mass characterization of cables commonly used today. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles KW - ELECTRIC cables KW - STRUCTURAL dynamics KW - MASS (Physics) KW - DAMPING (Mechanics) N1 - Accession Number: 69834178; Coombs, Douglas M. 1 Goodding, James C. 1 Babuşka, Vit 2 Ardelean, Emil V. 3 Robertson, Lawrence M. 4 Lane, Steven A.; Affiliation: 1: CSA Engineering, Albuquerque, New Mexico 87123 2: Sandia National Laboratories, Albuquerque, New Mexico 87185 3: Schafer Corporation, Albuquerque, New Mexico 87106 4: U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117; Source Info: Nov/Dec2011, Vol. 48 Issue 6, p958; Subject Term: SPACE vehicles; Subject Term: ELECTRIC cables; Subject Term: STRUCTURAL dynamics; Subject Term: MASS (Physics); Subject Term: DAMPING (Mechanics); NAICS/Industry Codes: 335990 All other electrical equipment and component manufacturing; NAICS/Industry Codes: 335920 Communication and energy wire and cable manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 16p; Document Type: Article L3 - 10.2514/1.51021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69834178&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Welter, John T. AU - Sathish, Shamachary AU - Christensen, Daniel E. AU - Brodrick, Philip G. AU - Heebl, Jason D. AU - Cherry, Matthew R. T1 - Focusing of longitudinal ultrasonic waves in air with an aperiodic flat lens. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2011/11// VL - 130 IS - 5 M3 - Article SP - 2789 EP - 2796 SN - 00014966 AB - Modeling and experimental results of an ultrasonic aperiodic flat lens for use in air are presented. Predictive modeling of the lens is performed using a hybrid genetic-greedy algorithm constrained to a linear structure. The optimized design parameters are used to fabricate a lens. A method combining a fiber-disk arrangement and scanning laser vibrometer measurements is developed to characterize the acoustic field distribution generated by the lens. The focal spot size is determined to be 0.88 of the incident wavelength of 80-90 kHz at a distance of 2.5 mm from the lens. Theoretically computed field distributions, optimized frequency of operation, and spatial resolution focal length are compared with experimental measurements. The differences between experimental measurements and the theoretical computations are analyzed. The theoretical calculation of the focal spot diameter is 1.7 mm which is 48% of the experimental measurement at a frequency of 80-90 kHz. This work illustrates the capabilities of a hybrid algorithm approach to design of flat acoustic lenses to operate in air with a resolution of greater than the incident wavelength and the challenges of characterizing acoustic field distribution in air. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 67252002; Welter, John T. 1 Sathish, Shamachary 2 Christensen, Daniel E. 3 Brodrick, Philip G. 4 Heebl, Jason D. 5 Cherry, Matthew R. 2; Affiliation: 1: Air Force Research Laboratory, Nondestructive Evaluation Branch (AFRL/RXLP), 2230 Tenth Street, Wright-Patterson AFB, Ohio 45433 2: University of Dayton Research Institute, Structural Integrity Division, 300 College Park, Dayton, Ohio 45469 3: Iowa State University, Department of Aerospace Engineering, 12508 Crawford Road, Omaha, Nebraska 68144 4: Southwestern Ohio Council of Higher Education, 7828 Shadowhill Way, Cincinnati, Ohio 45242 5: Air Force Research Laboratory, Nondestructive Evaluation Branch (AFRL/RXLP), 2230 Tenth St., Wright-Patterson AFB, Ohio 45433; Source Info: Nov2011, Vol. 130 Issue 5, p2789; Number of Pages: 8p; Document Type: Article L3 - 10.1121/1.3640841 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67252002&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Clemmons, Alton B. AU - Fields, Dail T1 - Values as Determinants of the Motivation to Lead. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2011/11// VL - 23 IS - 6 M3 - Article SP - 587 EP - 600 PB - Taylor & Francis Ltd SN - 08995605 AB - We examined the incremental contribution of personal values in predicting individuals' motivation to lead (MTL) in a military personnel sample (n = 231). We operationalized self-transcendence through personal values (spirituality, integrity, and willingness to serve) and self-enhancement value orientation through desire for power/achievement. In multivariate analyses, personal values made significant incremental contributions in explaining of all three forms of MTL. Personal values had the largest incremental effect in explaining noncalculative MTL. Self-enhancement values had a larger positive relationship with affective-identity and social-normative MTL than did self-transcendence values. Inversely, self-transcendence values had a significantly larger relationship with noncalculative MTL. [ABSTRACT FROM PUBLISHER] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATTITUDE (Psychology) -- Testing KW - LEADERSHIP KW - MOTIVATION (Psychology) KW - SCALE analysis (Psychology) KW - MILITARY personnel -- Psychology KW - SURVEYS KW - VALUES (Ethics) N1 - Accession Number: 67043176; Clemmons, Alton B. 1; Email Address: al.clemmons@yahoo.com Fields, Dail 2; Affiliation: 1: United States Air Force, USA 2: School of Global Leadership and Entrepreneurship, Regent University, USA; Source Info: 2011, Vol. 23 Issue 6, p587; Subject Term: ATTITUDE (Psychology) -- Testing; Subject Term: LEADERSHIP; Subject Term: MOTIVATION (Psychology); Subject Term: SCALE analysis (Psychology); Subject Term: MILITARY personnel -- Psychology; Subject Term: SURVEYS; Subject Term: VALUES (Ethics); Number of Pages: 14p; Document Type: Article L3 - 10.1080/08995605.2011.616787 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67043176&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Termkoa, Krongtip AU - Vangala, Shivashankar AU - Goodhue, William AU - Peterson, Rita AU - Bedford, Robert AU - Tassev, Vladimir AU - Lynch, Candace AU - Bliss, David T1 - Production of orientation-patterned GaP templates using wafer fusion techniques JO - Optical Materials JF - Optical Materials Y1 - 2011/11// VL - 34 IS - 1 M3 - Article SP - 30 EP - 35 SN - 09253467 AB - Abstract: Nonlinear optical frequency conversion is an effective technique for generating infrared (IR) and terahertz (THz) wavelengths not readily available from existing laser sources. Birefringent materials such as LiNbO3 are often used to generate wavelengths where gaps exist, but are unsuitable in the mid-IR, far-IR, and THz regions as these materials are often opaque in these regions. As an alternative, GaAs has been employed for frequency conversion in these regions using quasi-phase-matching (QPM) to overcome the material’s lack of birefringence. QPM has been successfully demonstrated in GaAs using fused stacks of thin alternately oriented layers or inverted orientation patterned (OP) grating templates overgrown with thick columnar GaAs layers. Although GaAs has a high nonlinear coefficient d 14 =170pm/V at 1.064μm and good thermal conductivity (52W/m K), it suffers from strong two-photon absorption below 1.7μm making it inefficient when pumped with a source less than or equal to this wavelength. GaP also has a high nonlinear coefficient d 14 =71pm/V at 1.064μm, better thermal conductivity (110W/m K) and much lower two-photon absorption in the 1μm region. Therefore, OPGaP is desirable for NLO applications in the mid-IR and THz that use commercially available pump lasers in the 1.06–1.55μm wavelength range. In this work the fabrication of OPGaP templates suitable for thick columnar hydride vapor phase epitaxial growth of GaP is reported using a commercially viable wafer fusion technique. [Copyright &y& Elsevier] AB - Copyright of Optical Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM compounds KW - CHEMICAL templates KW - SEMICONDUCTOR wafers KW - FUSION (Phase transformation) KW - NONLINEAR optics KW - FREQUENCY changers KW - DOUBLE refraction KW - LITHIUM niobate KW - GaP KW - Hydride vapor phase epitaxy KW - Nonlinear optical materials KW - Wafer fusion N1 - Accession Number: 66662192; Termkoa, Krongtip 1 Vangala, Shivashankar 1; Email Address: shivashankar_vangala@uml.edu Goodhue, William 1 Peterson, Rita 2 Bedford, Robert 2 Tassev, Vladimir 3 Lynch, Candace 3 Bliss, David 3; Affiliation: 1: Photonics Center, University of Massachusetts Lowell, Lowell, MA 01854, USA 2: Air Force Research Laboratory/Sensors Directorate, Wright Patterson AFB, OH 45433, USA 3: Air Force Research Laboratory/Sensors Directorate, Hanscom AFB, MA 01731, USA; Source Info: Nov2011, Vol. 34 Issue 1, p30; Subject Term: GALLIUM compounds; Subject Term: CHEMICAL templates; Subject Term: SEMICONDUCTOR wafers; Subject Term: FUSION (Phase transformation); Subject Term: NONLINEAR optics; Subject Term: FREQUENCY changers; Subject Term: DOUBLE refraction; Subject Term: LITHIUM niobate; Author-Supplied Keyword: GaP; Author-Supplied Keyword: Hydride vapor phase epitaxy; Author-Supplied Keyword: Nonlinear optical materials; Author-Supplied Keyword: Wafer fusion; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.optmat.2011.07.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66662192&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Evans, D. R. AU - Basun, S. A. AU - Cook, G. AU - Pinkevych, I. P. AU - Reshetnyak, V. Yu. T1 - Electric field interactions and aggregation dynamics of ferroelectric nanoparticles in isotropic fluid suspensions. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2011/11// VL - 84 IS - 17 M3 - Article SP - 174111-1 EP - 174111-9 SN - 10980121 AB - Stressed ferroelectric nanoparticles have been shown to yield unconventional properties that may open the doors to a variety of new fundamental studies and applications. For many of these new areas understanding particle-to-particle interactions will be a requirement. In this paper, the dynamics of aggregation of stressed ferroelectric nanoparticles as small as 9 nm in diameter are investigated in a nonpolar (isotropic) fluid, with the concentration of nanoparticles varying by four orders of magnitude. We also investigate the dependence on the separation distance between nanoparticles and how the field interactions between nanoparticles results in single species (i.e. dipoles) and higher-order aggregates. A theoretical model that accounts for three types of nanoparticles species, based on the Fokker--Planck equation, describes the experimental results. Prior published claims of increased aggregation with concentration and decreased aggregation with large ac fields are verified. Dipole moments for different sizes and concentrations of nanoparticles are determined; techniques to obtain an estimation of dipole moments, when the exact size and shape are unknown, are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - FERROELECTRICITY KW - FOKKER-Planck equation KW - DIPOLE moments KW - OPTICAL diffraction N1 - Accession Number: 70449494; Evans, D. R. 1; Email Address: dean.evans@wpafb.af.mil Basun, S. A. 1,2 Cook, G. 1,2 Pinkevych, I. P. 3 Reshetnyak, V. Yu. 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Azimuth Corporation, 4134 Linden Avenue, Suite 300, Dayton, Ohio 45432, USA 3: National Taras Shevchenko University of Kyiv, Kyiv, 01601, Ukraine; Source Info: Nov2011, Vol. 84 Issue 17, p174111-1; Subject Term: NANOPARTICLES; Subject Term: FERROELECTRICITY; Subject Term: FOKKER-Planck equation; Subject Term: DIPOLE moments; Subject Term: OPTICAL diffraction; Number of Pages: 9p; Document Type: Article L3 - 10.1103/PhysRevB.84.174111 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70449494&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thomas, Anne Goldzier AU - Tran, Bonnie Robin AU - Cranston, Marcus AU - Brown, Malerato Cecilia AU - Kumar, Rajiv AU - Tlelai, Matsotetsi T1 - Voluntary Medical Male Circumcision: A Cross-Sectional Study Comparing Circumcision Self-Report and Physical Examination Findings in Lesotho. JO - PLoS ONE JF - PLoS ONE Y1 - 2011/11// VL - 6 IS - 11 M3 - Article SP - 1 EP - 6 PB - Public Library of Science SN - 19326203 AB - Background: Overwhelming evidence, including three clinical trials, shows that male circumcision (MC) reduces the risk of HIV infection among men. However, data from recent Lesotho Demographic and Health Surveys do not demonstrate MC to be protective against HIV. These contradictory findings could partially be due to inaccurate self-reported MC status used to estimate MC prevalence. This study describes MC characteristics among men applying for Lesotho Defence Force recruitment and seeks to assess MC self-reported accuracy through comparison with physical-examination-based data. Methods and Findings: During Lesotho Defence Force applicant screening in 2009, 241 (77%) of 312 men, aged 18-25 y, consented to a self-administered demographic and MC characteristic survey and physician-performed genital examination. The extent of foreskin removal was graded on a scale of 1 (no evidence of MC) to 4 (complete MC). MC was self-reported by 27% (n = 64/239) of participants. Of the 64 men self-reporting being circumcised, physical exam showed that 23% had no evidence of circumcision, 27% had partial circumcision, and 50% had complete circumcision. Of the MCs reportedly performed by a medical provider, 3% were Grade 1 and 73% were Grade 4. Of the MCs reportedly performed by traditional circumcisers, 41% were Grade 1, while 28% were Grade 4. Among participants self-reporting being circumcised, the odds of MC status misclassification were seven times higher among those reportedly circumcised by initiation school personnel (odds ratio = 7.22; 95% CI = 2.29-22.75). Conclusions: Approximately 27% of participants self-reported being circumcised. However, only 50% of these men had complete MC as determined by a physical exam. Given this low MC self-report accuracy, countries scaling up voluntary medical MC (VMMC) should obtain physical-exam-based MC data to guide service delivery and cost estimates. HIV prevention messages promoting VMMC should provide comprehensive education regarding the definition of VMMC. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CIRCUMCISION KW - HIV infections KW - PERIODIC health examinations KW - MEN -- Health KW - PENIS -- Surgery KW - LESOTHO N1 - Accession Number: 73904567; Thomas, Anne Goldzier 1; Email Address: anne.thomas@med.navy.mil Tran, Bonnie Robin 1 Cranston, Marcus 2 Brown, Malerato Cecilia 3 Kumar, Rajiv 4 Tlelai, Matsotetsi 5; Affiliation: 1: Department of Defense HIV/AIDS Prevention Program, Naval Health Research Center, San Diego, California, United States of America 2: United States Air Force, Department of Defense, Keesler Air Force Base, Mississippi, United States of America 3: United States President's Emergency Plan for AIDS Relief-Lesotho, United States Embassy, Maseru, Lesotho 4: Indian Armed Forces, Pune, India 5: Lesotho Defence Force, Maseru, Lesotho; Source Info: 2011, Vol. 6 Issue 11, p1; Subject Term: CIRCUMCISION; Subject Term: HIV infections; Subject Term: PERIODIC health examinations; Subject Term: MEN -- Health; Subject Term: PENIS -- Surgery; Subject Term: LESOTHO; Number of Pages: 6p; Document Type: Article L3 - 10.1371/journal.pone.0027561 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73904567&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lyon, Don R. AU - Gunzelmann, Glenn M. T1 - Functional equivalence and spatial path memory. JO - Quarterly Journal of Experimental Psychology JF - Quarterly Journal of Experimental Psychology Y1 - 2011/11// VL - 64 IS - 11 M3 - Article SP - 2081 EP - 2087 SN - 17470218 AB - Loomis, Klatzky, Avraamides, Lippa and Golledge (2007) suggest that, when it comes to spatial information, verbal description and perceptual experience are nearly functionally equivalent with respect to the cognitive representations they produce. We tested this idea for the case of spatial memory for complex paths. Paths consisted entirely of unit-length segments followed by 90-degree turns, thus assuring that a path could be described with equal precision using either an egocentric verbal description or a virtual self-motion experience. The verbal description was analogous to driving directions (e.g., turn left and go one block, then turn right, etc.) except in three dimensions (allowing rotation followed by up or down movement). Virtual self-motion was depicted as first-person travel through a 3D grid of featureless corridors. Comparison of these two conditions produced a result that may be surprising to some, but nevertheless appears to support the notion of functional equivalence: Virtual self-motion does not produce better path memory than verbal description, when care is taken to present equally precise path information. This result holds for even very complex paths and despite evidence from proximity-based interference that the memory representation of the path is spatial. [ABSTRACT FROM AUTHOR] AB - Copyright of Quarterly Journal of Experimental Psychology is the property of Psychology Press (UK) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPATIAL ability KW - MEMORY KW - MENTAL representation KW - COGNITIVE ability KW - VIRTUAL reality KW - PSYCHOLOGY of movement KW - GAME theory KW - AUTOMOBILE driving KW - PSYCHOLOGICAL aspects KW - Mental imagery KW - Self-motion KW - Spatial cognition KW - Spatial memory KW - Visualization N1 - Accession Number: 67042778; Lyon, Don R. 1; Email Address: don.lyon@mesa.afmc.af.mil Gunzelmann, Glenn M. 2; Affiliation: 1: L3 Communications at Air Force Research Laboratory, USA 2: Air Force Research Laboratory, USA; Source Info: Nov2011, Vol. 64 Issue 11, p2081; Subject Term: SPATIAL ability; Subject Term: MEMORY; Subject Term: MENTAL representation; Subject Term: COGNITIVE ability; Subject Term: VIRTUAL reality; Subject Term: PSYCHOLOGY of movement; Subject Term: GAME theory; Subject Term: AUTOMOBILE driving; Subject Term: PSYCHOLOGICAL aspects; Author-Supplied Keyword: Mental imagery; Author-Supplied Keyword: Self-motion; Author-Supplied Keyword: Spatial cognition; Author-Supplied Keyword: Spatial memory; Author-Supplied Keyword: Visualization; Number of Pages: 7p; Document Type: Article L3 - 10.1080/17470218.2011.618227 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67042778&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Harrington, Kathleen T1 - Siobhan Fallon interviewed by Kathleen Harrington. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2011/11// VL - 23 IS - 1 M3 - Interview SP - 175 EP - 186 PB - US Air Force Academy English Department SN - 10466967 AB - An interview with author Siobhan Fallon is presented. When asked about the catalyst in choosing the title of her short story collection, she refers to her first story entitled "Waiting." She admits that writing is her way of sharing a glimpse of her world with others. She states that soldiers' spouses like her need to be educated about the opportunities open to military families. KW - SHORT story (Literary form) -- Women authors KW - MILITARY spouses KW - FALLON, Siobhan -- Interviews KW - WAITING (Short story) N1 - Accession Number: 67660090; Harrington, Kathleen 1; Affiliation: 1: Head of the English & Fine Arts Department, United States Air Force Academy; Source Info: 2011, Vol. 23 Issue 1, p175; Subject Term: SHORT story (Literary form) -- Women authors; Subject Term: MILITARY spouses; Reviews & Products: WAITING (Short story); People: FALLON, Siobhan -- Interviews; Number of Pages: 12p; Document Type: Interview UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67660090&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ullrich, B. AU - Wang, J. S. AU - Brown, G. J. T1 - Erratum: 'Analysis of thermal band gap variations of PbS quantum dots by Fourier transform transmission and emission spectroscopy' [Appl. Phys. Lett. 99, 081901 (2011)]. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2011/10/31/ VL - 99 IS - 18 M3 - Correction notice SP - 189902 PB - American Institute of Physics SN - 00036951 AB - A correction to the article "Analysis of thermal band gap variations of PbS quantum dots by Fourier transform transmission and emission spectroscopy" that was published online on November 3, 2011 is presented. KW - QUANTUM dots N1 - Accession Number: 67044176; Ullrich, B. 1 Wang, J. S. 1 Brown, G. J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, Ohio 45433-7707,; Source Info: 10/31/2011, Vol. 99 Issue 18, p189902; Subject Term: QUANTUM dots; Number of Pages: 1p; Illustrations: 1 Graph; Document Type: Correction notice L3 - 10.1063/1.3659487 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67044176&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Navarathne, Daminda AU - Ner, Yogesh AU - Grote, James G. AU - Sotzing, Gregory A. T1 - Three dye energy transfer cascade within DNA thin filmsElectronic supplementary information (ESI) available: Experimental details, fluorescence emission spectra of DNA films with varying dye ratios. See DOI: 10.1039/c1cc14416b. JO - Chemical Communications JF - Chemical Communications Y1 - 2011/10/31/ VL - 47 IS - 44 M3 - Article SP - 12125 EP - 12127 SN - 13597345 AB - An efficient cascade FRET was realized in solid state DNA-CTMA thin films using a three chromophore system without any covalent attachments. The extent of energy transfer from Cm102 to SRh was studied and found to improve eight-fold using the bridging dye Pm567. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemical Communications is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENERGY transfer KW - DNA KW - THIN films KW - SOLID state chemistry KW - ORGANIC dyes & pigments KW - FLUORESCENCE spectroscopy N1 - Accession Number: 66907664; Navarathne, Daminda 1 Ner, Yogesh 1 Grote, James G. 2 Sotzing, Gregory A. 1; Affiliation: 1: Department of Chemistry and Polymer Program 2: US Air Force Research Laboratory; Source Info: Oct2011, Vol. 47 Issue 44, p12125; Subject Term: ENERGY transfer; Subject Term: DNA; Subject Term: THIN films; Subject Term: SOLID state chemistry; Subject Term: ORGANIC dyes & pigments; Subject Term: FLUORESCENCE spectroscopy; NAICS/Industry Codes: 325130 Synthetic Dye and Pigment Manufacturing; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66907664&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Amer, Maher S. AU - Todd, T. Kyle AU - Busbee, John D. T1 - Effect of linear alcohol molecular size on the self-assembly of fullerene whiskers JO - Materials Chemistry & Physics JF - Materials Chemistry & Physics Y1 - 2011/10/17/ VL - 130 IS - 1/2 M3 - Article SP - 90 EP - 94 SN - 02540584 AB - Abstract: The recent development of self-assembled fullerene whiskers and wires has created an enormous potential and resolved a serious challenge for utilizing such unique class of carbon material in advanced nano-scale, molecular-based electronic, optical, and thermal devices. In this paper we investigate, the self-assembly of C60 molecules into one-dimensional whiskers using a series of linear alcohols H(CH2) n OH, with n changing from 1 (methanol) to 3 (isopropyl alcohol), to elucidate the effect of alcohol molecular size on the size distribution of the self-assemble fullerene whiskers. Our results show that the length of the produced fullerene whiskers is affected by the molecular size of the alcohol used in the process. The crucial role played by solvent/alcohol interaction in the assembly process is discussed. In addition, Raman spectroscopy measurements support the notion that the self-assembled whiskers are primarily held by depletion forces and no evidence of fullerene polymerization was observed. [Copyright &y& Elsevier] AB - Copyright of Materials Chemistry & Physics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR self-assembly KW - ALCOHOL KW - FULLERENES KW - METALLIC whiskers KW - ELECTRONIC structure KW - POLYMERIZATION KW - PARTICLE size distribution KW - CARBON KW - PHASE transformations (Physics) KW - Fullerenes KW - Nanostructures KW - Phase transitions KW - Raman spectroscopy and scattering N1 - Accession Number: 65439903; Amer, Maher S. 1,2; Email Address: maher.amer@wright.edu Todd, T. Kyle 2 Busbee, John D. 1; Affiliation: 1: Air Force Research Laboratory, Nano and Bio Branch, WPAFB, OH 45433, United States 2: Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45435, United States; Source Info: Oct2011, Vol. 130 Issue 1/2, p90; Subject Term: MOLECULAR self-assembly; Subject Term: ALCOHOL; Subject Term: FULLERENES; Subject Term: METALLIC whiskers; Subject Term: ELECTRONIC structure; Subject Term: POLYMERIZATION; Subject Term: PARTICLE size distribution; Subject Term: CARBON; Subject Term: PHASE transformations (Physics); Author-Supplied Keyword: Fullerenes; Author-Supplied Keyword: Nanostructures; Author-Supplied Keyword: Phase transitions; Author-Supplied Keyword: Raman spectroscopy and scattering; NAICS/Industry Codes: 325193 Ethyl Alcohol Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.matchemphys.2011.05.070 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65439903&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adams, Steven F. AU - Williamson, James M. AU - Fisher, Dustin M. T1 - Rotational temperature analysis of N2 by resonant enhanced multi-photon ionization with fluorescence detection. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/10/15/ VL - 110 IS - 8 M3 - Article SP - 083309 PB - American Institute of Physics SN - 00218979 AB - A non-invasive, optical technique to determine the rotational temperature of molecular nitrogen at atmospheric pressure by direct probing of the N2(X1Σg+,v=0) ground state with subsequent analysis of the rotational state distribution is presented. A tunable probe laser was scanned over resonant-enhanced, multi-photon ionization transitions initiating from various N2(X1Σg+,v=0,J″) states. At atmospheric pressure, the laser photo-ionization also induced N2+ fluorescence bands. Analysis of the relative fluorescence as a function of laser wavelength produced a calculated N2(X1Σg+,v=0,J″) rotational state distribution and determined the rotational temperature. The analysis also resulted in the assignment and tabulation of 11 previously unreported term energies for N2(b1Πu+,v=6) and N2(b1Πu-,v=6) for J′ > 22, based on the experimental data. The method resulted in temperature determinations for two experimental trials in atmospheric N2 gas flows at room temperature and 600 K that were in good agreement with thermocouple measurements in the vicinity of the laser probe region. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIPHOTON ionization KW - RESEARCH KW - FLUORESCENCE KW - FLUORESCENCE spectroscopy KW - PHOTOIONIZATION KW - THERMOCOUPLES N1 - Accession Number: 66902934; Adams, Steven F. 1 Williamson, James M. 2 Fisher, Dustin M. 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 2: UES Inc, Dayton Ohio 45432, 3: Dartmouth College, Hanover, New Hampshire 03755,; Source Info: Oct2011, Vol. 110 Issue 8, p083309; Subject Term: MULTIPHOTON ionization; Subject Term: RESEARCH; Subject Term: FLUORESCENCE; Subject Term: FLUORESCENCE spectroscopy; Subject Term: PHOTOIONIZATION; Subject Term: THERMOCOUPLES; NAICS/Industry Codes: 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables; Number of Pages: 7p; Document Type: Article L3 - 10.1063/1.3652867 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66902934&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buquoi, John Q. AU - Smith, Dennis W. AU - Iacono, Scott T. T1 - Kinetic study of semifluorinated arylene vinylene ether polymers. JO - Journal of Polymer Science Part A: Polymer Chemistry JF - Journal of Polymer Science Part A: Polymer Chemistry Y1 - 2011/10/15/ VL - 49 IS - 20 M3 - Article SP - 4441 EP - 4447 SN - 0887624X AB - Fluorinated arylene vinylene ether (FAVE) polymers were prepared from the base-promoted addition of commercial 2,2-bis(4-hydroxyphenyl)hexafluoropropane (6F bisphenol A) to aryl trifluorovinyl ether (TFVE), 2,2′-bis(4-trifluorovinyloxybiphenyl)-1,1,1,3,3,3-hexafluoropropane. The step-growth polymerization kinetics by using stoichiometric NaH and catalytic Cs2CO3 were investigated by monitoring the 19F NMR signals of the aryl TFVEs. The nth order kinetic model was used to determine rate constants over a series of programmed temperatures. Polymerization using stoichiometric NaH resulted in second-order kinetics with an activation energy of 59 kJ/mol. This model kinetic study provided insight into the mechanistic pathways of the FAVE polymer system that has recently shown a lot of interest in many areas of materials science. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011 [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Polymer Science Part A: Polymer Chemistry is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 71514722; Buquoi, John Q. 1 Smith, Dennis W. 2 Iacono, Scott T. 1; Affiliation: 1: Department of Chemistry, 2355 Fairchild Drive, United States Air Force Academy, USAF Academy, Colorado 80840 2: Department of Chemistry and The Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas, Richardson, Texas 75080; Source Info: Oct2011, Vol. 49 Issue 20, p4441; Number of Pages: 7p; Document Type: Article L3 - 10.1002/pola.24885 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71514722&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wilfong, E. R. AU - Lyles, M. AU - Rietcheck, R. L. AU - Arfsten, D. P. AU - Boeckman, H. J. AU - Johnson, E. W. AU - Doyle, T. L. AU - Chapman, G. D. T1 - The Acute and Long-Term Effects of Middle East Sand Particles on the Rat Airway Following a Single Intratracheal Instillation. JO - Journal of Toxicology & Environmental Health: Part A JF - Journal of Toxicology & Environmental Health: Part A Y1 - 2011/10/15/ VL - 74 IS - 20 M3 - Article SP - 1351 EP - 1365 SN - 15287394 AB - Military personnel deployed in the Middle East have emphasized concerns regarding high levels of dust generated from blowing desert sand and the movement of troops and equipment. Airborne particulate matter levels (PM10; PM < 10 μm) in the region may exceed 1500 μg/m3, significantly higher than the military exposure guideline (MEG) of 50 μg/m3. Increases in PM10 have been linked to a rise in incidences of asthma, obstructive pulmonary disease, lung cancer, and cardiovascular diseases. Male Sprague-Dawley rats received a single intratracheal (IT) instillation of 1, 5, or 10 mg of Middle East PM10 collected at a military occupied site in Kuwait, silica (positive control), or titanium dioxide (TiO2; negative control) suspended in 400 μl sterile saline, or saline alone (vehicle control). Twenty-four hours, 3 d, 7 d and 6 mo postexposure (n = 15/group), organs including lung were evaluated for histopathological changes and for particle contaminants. Bronchoalveolar fluid (BALF) was also analyzed for cellular and biochemical parameters, including cytokines and chemokines. Instillation of silica resulted in early, pronounced, sustained inflammation indicated by significant increases in levels of total protein and neutrophils, and activities of lactate dehydrogenase activity and β-glucuronidase activity. Lower magnitude and transient changes using the same markers were observed in animals exposed to TiO2 and Middle East PM10. The results suggest that for acute exposures, this Middle East PM10 is a nuisance-type dust with relatively low toxicity. However, since average deployment of military personnel to the Middle East is 180 d with potential for multiple follow-on tours, chronic exposure studies are needed to fully understand the pulmonary effects associated with Middle East PM exposure. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Toxicology & Environmental Health: Part A is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRWAY (Medicine) KW - RATS as laboratory animals KW - SAND KW - PARTICLES KW - MIDDLE East N1 - Accession Number: 65303324; Wilfong, E. R. 1 Lyles, M. 2 Rietcheck, R. L. 3 Arfsten, D. P. 4 Boeckman, H. J. 5 Johnson, E. W. 5 Doyle, T. L. 5 Chapman, G. D. 5; Affiliation: 1: Department of Chemistry, United States Naval Academy, Annapolis, Maryland, USA 2: United States Navy Bureau of Medicine and Surgery, Washington, DC, USA 3: Air Force Research Laboratory, Tri-Service Research Support, Pathology Section, Wright-Patterson AFB, Ohio, USA 4: Navy Drug Screening Laboratory, Naval Air Station Jacksonville, Florida, USA 5: Environmental Health Effects Laboratory, Wright-Patterson AFB, Naval Health Research Center Detachment, Ohio, USA; Source Info: Oct2011, Vol. 74 Issue 20, p1351; Subject Term: AIRWAY (Medicine); Subject Term: RATS as laboratory animals; Subject Term: SAND; Subject Term: PARTICLES; Subject Term: MIDDLE East; NAICS/Industry Codes: 112990 All Other Animal Production; NAICS/Industry Codes: 416390 Other specialty-line building supplies merchant wholesalers; NAICS/Industry Codes: 212321 Construction Sand and Gravel Mining; NAICS/Industry Codes: 484222 Dry bulk materials trucking, local; NAICS/Industry Codes: 484232 Dry bulk materials trucking, long distance; NAICS/Industry Codes: 423320 Brick, Stone, and Related Construction Material Merchant Wholesalers; Number of Pages: 15p; Illustrations: 1 Color Photograph, 2 Charts, 6 Graphs; Document Type: Article L3 - 10.1080/15287394.2010.516239 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65303324&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Szmulowicz, F. AU - Haugan, H. J. AU - Elhamri, S. AU - Brown, G. J. T1 - Calculation of vertical and horizontal mobilities in InAs/GaSb superlattices. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2011/10/15/ VL - 84 IS - 15 M3 - Article SP - 155307-1 EP - 155307-14 SN - 10980121 AB - Superlattice (SL) devices such as infrared detectors and quantum-cascade lasers rely on efficient transport of carriers perpendicular to the SL layers by drift and/or diffusion. While horizontal mobilities are measured routinely, measurements of perpendicular-carrier mobilities require nonstandard experimental techniques such as the geometric magneto-resistance. Here we show how perpendicular mobilities can be estimated from horizontal mobility measurements and calculated mobilities. We treat low-temperature horizontal and vertical transport in SL on an equal footing by calculating both mobilities using the same interface roughness scattering (IRS) model from a rigorous solution of the Boltzmann transport equation. The calculation is specialized to the case of InAs/GaSb SLs, which are of current interest in the development of third-generation infrared detector focal plane arrays. The results are compared to available data. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDIUM arsenide KW - GALLIUM compounds KW - LATTICE theory KW - INFRARED detectors KW - TRANSPORT theory (Mathematics) N1 - Accession Number: 70554903; Szmulowicz, F. 1; Email Address: frank.szmulowicz.ctr@wpafb.af.mil Haugan, H. J. 2 Elhamri, S. 3 Brown, G. J. 4; Affiliation: 1: University of Dayton Research Institute, 300 College Park Avenue, Dayton, Ohio 45469-0178, USA 2: Universal Technologies Corporation, Dayton, Ohio 45432-2600, USA 3: Department of Physics, University of Dayton, Dayton, Ohio 45469-2314, USA 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433-7707, USA; Source Info: Oct2011, Vol. 84 Issue 15, p155307-1; Subject Term: INDIUM arsenide; Subject Term: GALLIUM compounds; Subject Term: LATTICE theory; Subject Term: INFRARED detectors; Subject Term: TRANSPORT theory (Mathematics); Number of Pages: 14p; Document Type: Article L3 - 10.1103/PhysRevB.84.155307 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70554903&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Panasyuk, George Y. AU - Schotland, John C. AU - Markel, Vadim A. T1 - Quantum theory of the electromagnetic response of metal nanofilms. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2011/10/15/ VL - 84 IS - 15 M3 - Article SP - 155460-1 EP - 155460-10 SN - 10980121 AB - We develop a quantum theory of electron confinement in metal nanofilms. The theory is used to compute the nonlinear response of the film to a static or low-frequency external electric field and to investigate the role of boundary conditions imposed on the metal surface. We find that the sign and magnitude of the nonlinear polarizability depends dramatically on the type of boundary condition used. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM theory KW - FIELD theory (Physics) KW - BOUNDARY value problems KW - ELECTRIC fields KW - NONLINEAR models (Statistics) N1 - Accession Number: 70554983; Panasyuk, George Y. 1 Schotland, John C. 2 Markel, Vadim A. 3,4,5; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Department of Mathematics, University of Michigan, Ann Arbol, Michigan 48109, USA 3: Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA 4: Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA 5: Graduate Group in Applied Mathematics and Computational Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA; Source Info: Oct2011, Vol. 84 Issue 15, p155460-1; Subject Term: QUANTUM theory; Subject Term: FIELD theory (Physics); Subject Term: BOUNDARY value problems; Subject Term: ELECTRIC fields; Subject Term: NONLINEAR models (Statistics); Number of Pages: 10p; Document Type: Article L3 - 10.1103/PhysRevB.84.155460 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70554983&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Govyadinov, Alexander A. AU - Panasyuk, George Y. AU - Schotland, John C. AU - Markel, Vadim A. T1 - Theoretical and numerical investigation of the size-dependent optical effects in metal nanoparticles. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2011/10/15/ VL - 84 IS - 15 M3 - Article SP - 155461-1 EP - 155461-12 SN - 10980121 AB - We further develop the theory of quantum finite-size effects in metallic nanoparticles, which was originally formulated by F. Hache, D. Ricard, and C. Flytzanis [J. Opt. Soc. Am. B 3, 1647 (1986)] and (in a somewhat corrected form) by S. G. Rautian [Sov. Phys. JETP 85, 451 (1997)]. These references consider a metal nanoparticle as a degenerate Fermi gas of conduction electrons in an infinitely high spherical potential well. This model (referred to as the HRFR model below) yields mathematical expressions for the linear and the third-order nonlinear polarizabilities of a nanoparticle in terms of infinite nested series. These series have not been evaluated numerically so far and, in the case of nonlinear polarizability, they cannot be evaluated with the use of conventional computers due to the high computational complexity involved. Rautian has derived a set of remarkable analytical approximations to the series but direct numerical verification of Rautian's approximate formulas remained a formidable challenge. In this work, we derive an expression for the third-order nonlinear polarizability, which is exact within the HRFR model but amenable to numerical implementation. We then evaluate the expressions obtained by us numerically for both linear and nonlinear polarizabilities. We investigate the limits of applicability of Rautian's approximations and find that they are surprisingly accurate in a wide range of physical parameters. We also discuss the limits of small frequencies (comparable to or below the Drude relaxation constant) and of large particle sizes (the bulk limit) and show that these limits are problematic for the HRFR model, irrespective of any additional approximations used. Finally, we compare the HRFR model to the purely classical theory of nonlinear polarization of metal nanoparticles developed by us earlier [G. Y. Panasyuk, J. C. Schotland, and V. A. Markel, Phys. Rev. Lett. 100, 47402 (2008)]. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - ELECTRON gas KW - QUANTUM theory KW - QUANTUM wells KW - APPROXIMATION theory N1 - Accession Number: 70554984; Govyadinov, Alexander A. 1 Panasyuk, George Y. 2 Schotland, John C. 3 Markel, Vadim A. 4,5,6; Affiliation: 1: CIC nanoGUNE Consolidel; Avenida de Tolosa 76, E-20018 Guipuzcoa, Spain 2: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 3: Department of Mathematics, University of Michigan, Ann Arbor, Michigan 48109, USA 4: Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA 5: Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA 6: Graduate Group in Applied Mathematics and Computational Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA; Source Info: Oct2011, Vol. 84 Issue 15, p155461-1; Subject Term: NANOPARTICLES; Subject Term: ELECTRON gas; Subject Term: QUANTUM theory; Subject Term: QUANTUM wells; Subject Term: APPROXIMATION theory; Number of Pages: 12p; Document Type: Article L3 - 10.1103/PhysRevB.84.155461 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70554984&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vahala, George AU - Yepez, Jeffrey AU - Vahala, Linda AU - Min Soe AU - Bo Zhang AU - Ziegeler, Sean T1 - Poincaré recurrence and spectral cascades in three-dimensional quantum turbulence. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2011/10/15/ VL - 84 IS - 4-2 M3 - Article SP - 046713-1 EP - 046713-17 SN - 15393755 AB - The time evolution of the ground state wave function of a zero-temperature Bose-Einstein condensate (BEC) gas is well described by the Hamiltonian Gross-Pitaevskii (GP) equation. Using a set of appropriately interleaved unitary collision-stream operators, a qubit lattice gas algorithm is devised, which on taking moments, recovers the Gross-Pitaevskii (GP) equation under diffusion ordering (time scales as length²). Unexpectedly, there is a class of initial states whose Poincare recurrence time is extremely short and which, as the grid resolution is increased, scales with diffusion ordering (and not as length³). The spectral results of J. Yepez et al. [Phys. Rev. Lett. 103, 084501 (2009).] for quantum turbulence are revised and it is found that it is the compressible kinetic energy spectrum that exhibits three distinct spectral regions: a small-i classical-like Kolmogorov k-5/3, a steep semiclassical cascade region, and a large-k quantum vortex spectrum k-3. For most evolution times the incompressible kinetic energy spectrum exhibits a somewhat robust quantum vortex spectrum of k-3 for an extended range in k with a k-3.4 spectrum for intermediate k. For linear vortices of winding number 1 there is an intermittent loss of the quantum vortex cascade with its signature seen in the time evolution of the kinetic energy Ekin(t). the loss of the quantum vortex k-3 spectrum in the incompressible kinetic energy spectrum as well as the minimalization of the vortex core isosurfaces that would totally inhibit any Kelvin wave vortex cascade. In the time intervals around these intermittencies the incompressible kinetic energy also exhibits a multicascade spectrum. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GROUND state (Quantum mechanics) KW - WAVE functions KW - BOSE-Einstein condensation KW - LATTICE theory KW - ALGORITHMS N1 - Accession Number: 70501020; Vahala, George 1 Yepez, Jeffrey 2 Vahala, Linda 3 Min Soe 4 Bo Zhang 1 Ziegeler, Sean 5; Affiliation: 1: Department of Physics, William & Mary, Williamsburg, Virginia 23185, USA 2: Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731, USA 3: Department of Electrical & Computer Engineering, Old Dominion University, Norfolk, Virginia 23529, USA 4: Department of Mathematics and Physical Sciences, Rogers State University, Claremore, Oklahoma 74017, USA 5: High Performance Technologies, Inc., Reston, Virginia 20190, USA; Source Info: Oct2011, Vol. 84 Issue 4-2, p046713-1; Subject Term: GROUND state (Quantum mechanics); Subject Term: WAVE functions; Subject Term: BOSE-Einstein condensation; Subject Term: LATTICE theory; Subject Term: ALGORITHMS; Number of Pages: 17p; Document Type: Article L3 - 10.1103/PhysRevE.84.046713 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70501020&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Herbold, E.B. AU - Jordan, J.L. AU - Thadhani, N.N. T1 - Effects of processing and powder size on microstructure and reactivity in arrested reactive milled Al+Ni JO - Acta Materialia JF - Acta Materialia Y1 - 2011/10// VL - 59 IS - 17 M3 - Article SP - 6717 EP - 6728 SN - 13596454 AB - Abstract: Ball-milling Al-metal powders can result in self-sustaining high-temperature synthesis in intermetallic-forming systems. Here, Al and Ni powders with similar composition are used to investigate how microstructural differences affect the measured time to reaction (TTR) between powders of different sizes processed under milling conditions specified by statistically designed experiments. Linear statistical models predicting the TTR and the change in temperature (ΔT) are built from these experimental results. The time required to observe a self-sustained high-temperature synthesis of NiAl with different combinations of the powders and ball-milling conditions vary by almost an order of magnitude. Comparisons of powders milled to times corresponding to percentages of their averaged TTR show similar reaction initiation temperatures despite the difference in total milling time. Several distinct arrested reactions within the powder grains exhibit rapid solidification or incomplete diffusion of Ni into Al, forming porous Ni-rich layered structures. The partially reacted grains suggest that the composite laminate particles are not forming intermetallic on the grain scale, but on the localized scale between layers. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POWDER metallurgy KW - ALUMINUM compounds KW - MICROSTRUCTURE KW - BALL mills KW - X-ray diffraction KW - PARTICLE size distribution KW - SOLIDIFICATION KW - LAMINATED materials KW - Differential scanning calorimetry KW - High-energy ball-milling KW - Self-propagating high-temperature synthesis N1 - Accession Number: 65047113; Herbold, E.B. 1,2; Email Address: herbold1@llnl.gov Jordan, J.L. 1 Thadhani, N.N. 2; Affiliation: 1: High Explosives Research and Development Branch, Munitions Directorate, Air Force Research Laboratory, Eglin AFB, FL 32542, USA 2: School of Materials Science and Engineering, Georgia Institute of Technology, Love Manufacturing Building, 771 Ferst Drive, Atlanta, GA 30332, USA; Source Info: Oct2011, Vol. 59 Issue 17, p6717; Subject Term: POWDER metallurgy; Subject Term: ALUMINUM compounds; Subject Term: MICROSTRUCTURE; Subject Term: BALL mills; Subject Term: X-ray diffraction; Subject Term: PARTICLE size distribution; Subject Term: SOLIDIFICATION; Subject Term: LAMINATED materials; Author-Supplied Keyword: Differential scanning calorimetry; Author-Supplied Keyword: High-energy ball-milling; Author-Supplied Keyword: Self-propagating high-temperature synthesis; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 332117 Powder Metallurgy Part Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.actamat.2011.07.029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65047113&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Visbal, Miguel R. T1 - Numerical Investigation of Deep Dynamic Stall of a Plunging Airfoil. JO - AIAA Journal JF - AIAA Journal Y1 - 2011/10// VL - 49 IS - 10 M3 - Article SP - 2152 EP - 2170 SN - 00011452 AB - Simulation of the deep dynamic-stall phenomenon induced by large-amplitude plunging oscillations of an airfoil under low-Reynolds-number conditions is investigated. The flowfields are computed employing an extensively validated high-fidelity implicit large-eddy simulation approach. Comparisons with phase-averaged experimental measurements obtained in two different facilities are performed for an SD7003 airfoil section at a chord Reynolds number Rec = 6 x 104 and mean angle of attack αo = 8° plunging with reduced frequency k = 0.25 and non- dimensional amplitude ho/c = 0.5. Reasonable agreement among computations and experiments is demonstrated during the formation and initial convection of the single turbulent dynamic-stall vortex. However, it is find that the later stages of vortex shedding and trailing-edge vortex dynamics are considerably more sensitive, leading to discrepancies between the experiment, as well as between computational and experimental results. To elucidate this issue, the effects of spanwise extent and spatial grid resolution in the simulations are investigated and shown not to be the critical factor. Instead, discrepancies are found to arise from the pronounced flow three-dimensionality that emerges during the dynamic-stall vortex shedding and trailing-edge vortex formation in the presence of an endwall. A detailed description of the unsteady flow structure during the dynamic-stall process is provided, with emphasis on the formation of the leading-edge vortex system and the transitional aspects of the flow. Effects of Reynolds number over the range of 1 x 10³ ≤ Rec ≤ 1.2 x 105 are also investigated. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROFOILS KW - REYNOLDS number KW - VISCOUS flow KW - AERODYNAMICS KW - VISCOSITY N1 - Accession Number: 66752869; Visbal, Miguel R. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Oct2011, Vol. 49 Issue 10, p2152; Subject Term: AEROFOILS; Subject Term: REYNOLDS number; Subject Term: VISCOUS flow; Subject Term: AERODYNAMICS; Subject Term: VISCOSITY; Number of Pages: 19p; Document Type: Article L3 - 10.2514/1.J050892 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66752869&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Slep, Amy M. Smith AU - Heyman, Richard E. AU - Snarr, Jeffery D. T1 - Child emotional aggression and abuse: Definitions and prevalence JO - Child Abuse & Neglect JF - Child Abuse & Neglect Y1 - 2011/10// VL - 35 IS - 10 M3 - Article SP - 783 EP - 796 SN - 01452134 AB - Objective: Research on and intervention for child emotional abuse and emotional aggression toward children have been severely hampered because there have been no agreed-upon, clinically usable definitions. Methods: We have (a) proposed and field-tested a set of criteria to operationally define child emotional abuse for clinical settings and (b) used these criteria to design a parent-report measure of parental emotional aggression and child emotional abuse that could be used in research. In this paper, we review the development and field trials of these criteria for making substantiation decisions. Results: Agreement between master reviewers and field decisions was extremely high in a 5-site development trial (96% agreement, κ =.89) and a 41-site dissemination trial (90% agreement, κ =.73). We compare these criteria to other research criteria in the literature. We then present data collected using a self-report measure designed to parallel these criteria from an anonymous online survey of US Air Force personnel and their spouses. The final sample (N =52,780) was weighted to be representative of the United States civilian population. The prevalence of parents’ emotionally aggressive acts was much higher than the prevalence of emotional abuse (acts plus impact), but rates of parents’ acts of emotional aggression were lower than those typically reported in the literature. Additional analyses tested for differential effects due to gender of perpetrator (i.e., mothers or fathers), age of victim, and clustering within families. These factors did not drive rates of aggression or abuse. Conclusions: In sum, the criteria developed and proposed appear to support reliable clinical decision making regarding child emotional abuse and can be translated to research survey tools that better capture the continuum of parents’ emotional aggression and child emotional abuse than the measures that are currently available, advancing the state of the science with respect to child emotional abuse. [Copyright &y& Elsevier] AB - Copyright of Child Abuse & Neglect is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PSYCHOLOGICAL child abuse KW - AGGRESSION (Psychology) KW - DECISION making in clinical medicine KW - SELF-evaluation KW - ABUSIVE parents KW - INTERNET surveys KW - FAMILIES of military personnel KW - AIRMEN KW - UNITED States. Air Force KW - Child emotional abuse KW - Child maltreatment KW - Criteria KW - Prevalence KW - UNITED States. Air Force -- Airmen N1 - Accession Number: 67138833; Slep, Amy M. Smith 1,2 Heyman, Richard E. 1,2 Snarr, Jeffery D. 1,2; Affiliation: 1: Department of Psychology, Stony Brook University, Stony Brook, NY 11794-2500, USA 2: United States Air Force Family Advocacy Program 1 , Lackland-Kelly Air Force Base, San Antonio, TX, USA; Source Info: Oct2011, Vol. 35 Issue 10, p783; Subject Term: PSYCHOLOGICAL child abuse; Subject Term: AGGRESSION (Psychology); Subject Term: DECISION making in clinical medicine; Subject Term: SELF-evaluation; Subject Term: ABUSIVE parents; Subject Term: INTERNET surveys; Subject Term: FAMILIES of military personnel; Subject Term: AIRMEN; Subject Term: UNITED States. Air Force; Author-Supplied Keyword: Child emotional abuse; Author-Supplied Keyword: Child maltreatment; Author-Supplied Keyword: Criteria; Author-Supplied Keyword: Prevalence; Company/Entity: UNITED States. Air Force -- Airmen; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.chiabu.2011.07.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67138833&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Scott-Emuakpor, O. AU - George, T. AU - Cross, C. AU - Shen, M.-H. T1 - Analysis of Strain Energy Behavior Throughout a Fatigue Process. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2011/10// VL - 51 IS - 8 M3 - Article SP - 1317 EP - 1323 SN - 00144851 AB - The dissipation of strain energy density per cycle was analyzed to understand its trend through a fatigue process. The motivation behind this analysis is to improve a fatigue life prediction method, which is based on a strain energy and failure correlation. The correlation states that the same amount of strain energy is dissipated during both monotonic fracture and cyclic fatigue. This means the summation of strain energy density per cycle is equal to the total strain energy density dissipated monotonically. In order to validate this understanding, the strain energy density per cycle was analyzed at several alternating stress levels for fatigue life of Aluminum 6061-T6 (Al 6061-T6) between 10 and 10 cycles. The analysis includes the following: Alternating between high and low operating frequencies (50x magnitude difference), interruption of cyclic load during testing, and idle/zero-loading intervals of 20-40 minutes in-between cyclic loading sequences. All experimental results show a consistent trend of cyclic softening as the loading cycles approach failure; however, due to an inefficient curve fit procedure of the stress-dependent strain equation at low alternating stresses onto the experimental stress-strain data, a new approach for calculating the strain energy density per cycle is explored and shows promising results. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Fatigue KW - ENERGY dissipation KW - MONOTONIC functions KW - CYCLIC loads KW - STRESS-strain curves KW - Energy KW - Fatigue KW - Strain N1 - Accession Number: 65273491; Scott-Emuakpor, O. 1; Email Address: onome.scott-emuakpor@wpafb.af.mil George, T. 1 Cross, C. 1 Shen, M.-H. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, WPAFB 45433 USA 2: Department of Mechanical Engineering, The Ohio State University, Columbus 43210 USA; Source Info: Oct2011, Vol. 51 Issue 8, p1317; Subject Term: MATERIALS -- Fatigue; Subject Term: ENERGY dissipation; Subject Term: MONOTONIC functions; Subject Term: CYCLIC loads; Subject Term: STRESS-strain curves; Author-Supplied Keyword: Energy; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Strain; Number of Pages: 7p; Document Type: Article L3 - 10.1007/s11340-010-9457-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65273491&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - BURNS, J. T. AU - LARSEN, J. M. AU - GANGLOFF, R. P. T1 - Driving forces for localized corrosion-to-fatigue crack transition in Al-Zn-Mg-Cu. JO - Fatigue & Fracture of Engineering Materials & Structures JF - Fatigue & Fracture of Engineering Materials & Structures Y1 - 2011/10// VL - 34 IS - 10 M3 - Article SP - 745 EP - 773 PB - Wiley-Blackwell SN - 8756758X AB - ABSTRACT Research on fatigue crack formation from a corroded 7075-T651 surface provides insight into the governing mechanical driving forces at microstructure-scale lengths that are intermediate between safe life and damage tolerant feature sizes. Crack surface marker-bands accurately quantify cycles ( Ni) to form a 10-20 μm fatigue crack emanating from both an isolated pit perimeter and EXCO corroded surface. The Ni decreases with increasing-applied stress. Fatigue crack formation involves a complex interaction of elastic stress concentration due to three-dimensional pit macro-topography coupled with local micro-topographic plastic strain concentration, further enhanced by microstructure (particularly sub-surface constituents). These driving force interactions lead to high variability in cycles to form a fatigue crack, but from an engineering perspective, a broadly corroded surface should contain an extreme group of features that are likely to drive the portion of life to form a crack to near 0. At low-applied stresses, crack formation can constitute a significant portion of life, which is predicted by coupling macro-pit and micro-feature elastic-plastic stress/strain concentrations from finite element analysis with empirical low-cycle fatigue life models. The presented experimental results provide a foundation to validate next-generation crack formation models and prognosis methods. [ABSTRACT FROM AUTHOR] AB - Copyright of Fatigue & Fracture of Engineering Materials & Structures is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Corrosion fatigue KW - CRACKING process (Petroleum industry) KW - MICROSTRUCTURE KW - FINITE element method KW - NUMERICAL analysis N1 - Accession Number: 65328351; BURNS, J. T. 1,2 LARSEN, J. M. 1 GANGLOFF, R. P. 2; Affiliation: 1: Air Force Research Laboratory Materials and Manufacturing Directorate (AFRL/RX), Wright-Patterson Air Force Base, OH 45433, USA 2: Department of Materials Science and Engineering, University of Virginia, Charlottesville, VA 22904, USA; Source Info: Oct2011, Vol. 34 Issue 10, p745; Subject Term: METALS -- Corrosion fatigue; Subject Term: CRACKING process (Petroleum industry); Subject Term: MICROSTRUCTURE; Subject Term: FINITE element method; Subject Term: NUMERICAL analysis; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 29p; Illustrations: 1 Color Photograph, 6 Black and White Photographs, 5 Diagrams, 4 Charts, 3 Graphs; Document Type: Article L3 - 10.1111/j.1460-2695.2011.01568.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65328351&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Halverson, Tim AU - Hornof, Anthony J. T1 - A Computational Model of “Active Vision” for Visual Search in Human–Computer Interaction. JO - Human-Computer Interaction JF - Human-Computer Interaction Y1 - 2011/10//Oct-Dec2011 VL - 26 IS - 4 M3 - Article SP - 285 EP - 314 PB - Taylor & Francis Ltd SN - 07370024 AB - Human visual search plays an important role in many human–computer interaction (HCI) tasks. Better models of visual search are needed not just to predict overall performance outcomes, such as whether people will be able to find the information needed to complete an HCI task, but to understand the many human processes that interact in visual search, which will in turn inform the detailed design of better user interfaces. This article describes a detailed instantiation, in the form of a computational cognitive model, of a comprehensive theory of human visual processing known as “active vision” (Findlay & Gilchrist, 2003). The computational model is built using the Executive Process-Interactive Control cognitive architecture. Eye-tracking data from three experiments inform the development and validation of the model. The modeling asks—and at least partially answers—the four questions of active vision: (a) What can be perceived in a fixation? (b) When do the eyes move? (c) Where do the eyes move? (d) What information is integrated between eye movements? Answers include: (a) Items nearer the point of gaze are more likely to be perceived, and the visual features of objects are sometimes misidentified. (b) The eyes move after the fixated visual stimulus has been processed (i.e., has entered working memory). (c) The eyes tend to go to nearby objects. (d) Only the coarse spatial information of what has been fixated is likely maintained between fixations. The model developed to answer these questions has both scientific and practical value in that the model gives HCI researchers and practitioners a better understanding of how people visually interact with computers, and provides a theoretical foundation for predictive analysis tools that can predict aspects of that interaction. [ABSTRACT FROM AUTHOR] AB - Copyright of Human-Computer Interaction is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HUMAN-computer interaction KW - USER interfaces (Computer systems) KW - COGNITIVE psychology KW - PERFORMANCE technology KW - VISION N1 - Accession Number: 67698771; Halverson, Tim 1; Email Address: timothy.halverson@wpafb.af.mil Hornof, Anthony J. 2; Email Address: hornof@cs.uoregon.edu; Affiliation: 1: Air Force Research Laboratory 2: Department of Computer and Information Science, University of Oregon; Source Info: Oct-Dec2011, Vol. 26 Issue 4, p285; Subject Term: HUMAN-computer interaction; Subject Term: USER interfaces (Computer systems); Subject Term: COGNITIVE psychology; Subject Term: PERFORMANCE technology; Subject Term: VISION; Number of Pages: 30p; Illustrations: 7 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1080/07370024.2011.625237 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67698771&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Wenjing AU - Chatterjee, Mainak AU - Kwiat, Kevin T1 - Cooperation in Wireless Networks with Unreliable Channels. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2011/10// VL - 59 IS - 10 M3 - Article SP - 2808 EP - 2817 SN - 00906778 AB - In a distributed wireless system, multiple network nodes behave cooperatively towards a common goal. An important challenge in such a scenario is to attain mutual cooperation. This paper provides a non-cooperative game theoretic solution to enforce cooperation in wireless networks in the presence of channel noise. We focus on one-hop information exchange and model the packet forwarding process as a hidden action game with imperfect private monitoring. We propose a state machine based strategy to reach Nash Equilibrium. The equilibrium is proved to be a sequential one with carefully designed system parameters. Furthermore, we extend our discussion to a general wireless network scenario by considering how cooperation can prevail over collusion using evolutionary game theory. The simulation results are provided to back our analysis. In particular, network throughput performance is measured with respect to parameters like channel loss probability, route hop count, and mobility. Results suggest that the performance due to our proposed strategy is in close agreement with that of unconditionally cooperative nodes. Simulation results also reveal how the convergence of cooperation enforcement is affected by initial population share and channel unreliability. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIRELESS sensor networks KW - WIRELESS sensor nodes KW - DATA packets & packeting KW - SIMULATION methods & models KW - GAME theory KW - NOISE -- Measurement KW - collusion resistance KW - cooperation enforcement KW - Equations KW - evolutionary game theory KW - Game theory KW - Games KW - imperfect observation KW - Monitoring KW - Noise KW - Noise measurement KW - sequential equilibrium KW - Wireless networks N1 - Accession Number: 66906337; Wang, Wenjing 1 Chatterjee, Mainak 1 Kwiat, Kevin 2; Affiliation: 1: department of EECS, University of Central Florida, Orlando, FL 2: Air Force Research Laboratory, Rome, NY; Source Info: Oct2011, Vol. 59 Issue 10, p2808; Subject Term: WIRELESS sensor networks; Subject Term: WIRELESS sensor nodes; Subject Term: DATA packets & packeting; Subject Term: SIMULATION methods & models; Subject Term: GAME theory; Subject Term: NOISE -- Measurement; Author-Supplied Keyword: collusion resistance; Author-Supplied Keyword: cooperation enforcement; Author-Supplied Keyword: Equations; Author-Supplied Keyword: evolutionary game theory; Author-Supplied Keyword: Game theory; Author-Supplied Keyword: Games; Author-Supplied Keyword: imperfect observation; Author-Supplied Keyword: Monitoring; Author-Supplied Keyword: Noise; Author-Supplied Keyword: Noise measurement; Author-Supplied Keyword: sequential equilibrium; Author-Supplied Keyword: Wireless networks; Number of Pages: 0p; Document Type: Article L3 - 10.1109/TCOMM.2011.081111.100085 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66906337&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gao, Kanke AU - Batalama, Stella N. AU - Pados, Dimitris A. AU - Suter, Bruce W. T1 - Compressive Sampling With Generalized Polygons. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing Y1 - 2011/10// VL - 59 IS - 10 M3 - Article SP - 4759 EP - 4766 SN - 1053587X AB - We consider the problem of compressed sensing and propose new deterministic low-storage constructions of compressive sampling matrices based on classical finite-geometry generalized polygons. For the noiseless measurements case, we develop a novel exact-recovery algorithm for strictly sparse signals that utilizes the geometry properties of generalized polygons and exhibits complexity that depends on the sparsity value only. In the presence of measurement noise, recovery of the generalized-polygon sampled signals can be carried out effectively using a belief propagation algorithm. Experimental studies included in this paper illustrate our theoretical developments. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTATIONAL complexity KW - ALGORITHMS KW - NOISE -- Measurement KW - BIPARTITE graphs KW - GENERALIZED polygons KW - SPARSE matrices KW - SAMPLING (Statistics) KW - SIGNAL processing -- Digital techniques KW - DETECTORS KW - Belief propagation KW - bipartite graphs KW - Complexity theory KW - Compressed sensing KW - compressive sampling KW - Energy measurement KW - finite geometry KW - generalized polygons KW - low-density parity-check codes KW - Matching pursuit algorithms KW - Noise measurement KW - Nyquist sampling KW - Sparse matrices KW - sparse signals N1 - Accession Number: 65466594; Gao, Kanke 1 Batalama, Stella N. 1 Pados, Dimitris A. 1 Suter, Bruce W. 2; Affiliation: 1: Department of Electrical Engineering, State University of New York at Buffalo, Buffalo, NY, USA 2: Air Force Research Laboratory/RITB, Rome, NY, USA; Source Info: Oct2011, Vol. 59 Issue 10, p4759; Subject Term: COMPUTATIONAL complexity; Subject Term: ALGORITHMS; Subject Term: NOISE -- Measurement; Subject Term: BIPARTITE graphs; Subject Term: GENERALIZED polygons; Subject Term: SPARSE matrices; Subject Term: SAMPLING (Statistics); Subject Term: SIGNAL processing -- Digital techniques; Subject Term: DETECTORS; Author-Supplied Keyword: Belief propagation; Author-Supplied Keyword: bipartite graphs; Author-Supplied Keyword: Complexity theory; Author-Supplied Keyword: Compressed sensing; Author-Supplied Keyword: compressive sampling; Author-Supplied Keyword: Energy measurement; Author-Supplied Keyword: finite geometry; Author-Supplied Keyword: generalized polygons; Author-Supplied Keyword: low-density parity-check codes; Author-Supplied Keyword: Matching pursuit algorithms; Author-Supplied Keyword: Noise measurement; Author-Supplied Keyword: Nyquist sampling; Author-Supplied Keyword: Sparse matrices; Author-Supplied Keyword: sparse signals; NAICS/Industry Codes: 541910 Marketing Research and Public Opinion Polling; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TSP.2011.2160860 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65466594&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Xue AU - Wu, Zhijin AU - Chakravarthy, Vasu D. AU - Wu, Zhiqiang T1 - A Low-Complexity Approximation to Lognormal Sum Distributions via Transformed Log Skew Normal Distribution. JO - IEEE Transactions on Vehicular Technology JF - IEEE Transactions on Vehicular Technology Y1 - 2011/10// VL - 60 IS - 8 M3 - Article SP - 4040 EP - 4045 SN - 00189545 AB - Sums of lognormal random variables (RVs) occur in many important problems in wireless communication. The lognormal sum distribution is known to have no closed form and is difficult to numerically compute. Several methods have been proposed to approximate the lognormal sum distribution. In this paper, we first propose a low-complexity approximation method called log skew normal (LSN) approximation to model and approximate the lognormal sum distributed RVs. For typical lognormal sum cases in wireless communication, the proposed LSN method has high accuracy in most of the region of the cumulative distribution function (cdf), particularly in the lower region. The closed-form probability density function (pdf) and cdf of the resulting LSN RV are presented, and its parameters are derived from those of the individual lognormal RVs by using a moment-matching technique. However, the LSN approximation has a restriction for the skewness of samples in the logarithm domain. To overcome this drawback, a transformed LSN (TLSN) approximation method is proposed, which uses another parameter to control the skewness of samples in the transform logarithm domain. Simulation results on the pdf and cdf of lognormal sum RVs confirm the effectiveness of the TLSN approximation method. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Vehicular Technology is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOGNORMAL distribution KW - RANDOM variables KW - WIRELESS communication systems KW - LOGARITHMIC functions KW - DISTRIBUTION (Probability theory) KW - Accuracy KW - Approximation to lognormal sums KW - Complexity theory KW - Gaussian distribution KW - Least squares approximation KW - log skew normal KW - moment matching KW - Monte Carlo methods KW - Random variables KW - transformed log skew normal N1 - Accession Number: 66816265; Li, Xue 1 Wu, Zhijin 2 Chakravarthy, Vasu D. 3 Wu, Zhiqiang 4; Affiliation: 1: Department of Electrical Engineering, Wright State University, Dayton, OH, USA 2: Department of Biostatistics, Brown University, Providence, RI , USA 3: Air Force Research Laboratory, Wright-Patterson AFB, OH , USA 4: Department of Biostatistics, Brown University, Providence, OH , USA; Source Info: Oct2011, Vol. 60 Issue 8, p4040; Subject Term: LOGNORMAL distribution; Subject Term: RANDOM variables; Subject Term: WIRELESS communication systems; Subject Term: LOGARITHMIC functions; Subject Term: DISTRIBUTION (Probability theory); Author-Supplied Keyword: Accuracy; Author-Supplied Keyword: Approximation to lognormal sums; Author-Supplied Keyword: Complexity theory; Author-Supplied Keyword: Gaussian distribution; Author-Supplied Keyword: Least squares approximation; Author-Supplied Keyword: log skew normal; Author-Supplied Keyword: moment matching; Author-Supplied Keyword: Monte Carlo methods; Author-Supplied Keyword: Random variables; Author-Supplied Keyword: transformed log skew normal; NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 6p; Document Type: Article L3 - 10.1109/TVT.2011.2163652 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66816265&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boglione, L. AU - Webster, R.T. T1 - Unifying interpretation of reflection coefficient and Smith chart definitions. JO - IET Microwaves, Antennas & Propagation JF - IET Microwaves, Antennas & Propagation Y1 - 2011/10// VL - 5 IS - 12 M3 - Article SP - 1479 EP - 1487 PB - Institution of Engineering & Technology SN - 17518725 AB - This study develops a unifying theory that defines a single transformation from the impedance Z to the reflection coefficient Γ plane independently of the impedance normalisation in use; and the real or complex nature of the characteristic impedance Z0. The study starts off from the Kurokawa's definition of reflection coefficient to discuss the required steps to map Z into Γ and highlights the differences that exist between Kurokawa's and the standard Γ definition. As a logical consequence of the previous discussion, a new definition of reflection coefficient is proposed and validated: the apparent differences stemming from either the standard or Kurokawa's definition of reflection coefficient Γ are easily interpreted as particular cases of the proposed transformation. In the process, the study's unifying definition of reflection coefficient allows and facilitates one consistent interpretation of the Smith chart among the possible Γ definitions, including Kurokawa's. Experimental data supporting the study's conclusions are also presented. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Microwaves, Antennas & Propagation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SMITH charts KW - ELECTRIC impedance KW - REFLECTANCE KW - EXPERIMENTS KW - DATA analysis KW - MAPPINGS (Mathematics) N1 - Accession Number: 66388265; Boglione, L. 1 Webster, R.T. 2; Affiliation: 1: Solid State Scientific Corporation, Hanscom AFB, USA 2: Air Force Research Laboratory, Hanscom AFB, USA; Source Info: Oct2011, Vol. 5 Issue 12, p1479; Subject Term: SMITH charts; Subject Term: ELECTRIC impedance; Subject Term: REFLECTANCE; Subject Term: EXPERIMENTS; Subject Term: DATA analysis; Subject Term: MAPPINGS (Mathematics); Number of Pages: 9p; Document Type: Article L3 - 10.1049/iet-map.2011.0129 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66388265&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McClernon, Christopher K. AU - Miller, James C. T1 - Variance as a Measure of Performance in an Aviation Context. JO - International Journal of Aviation Psychology JF - International Journal of Aviation Psychology Y1 - 2011/10//Oct-Dec2011 VL - 21 IS - 4 M3 - Article SP - 397 EP - 412 PB - Taylor & Francis Ltd SN - 10508414 AB - A combined measure of performance (i.e., constant error plus variable error) is a common approach to determining aircraft pilot performance. However, a variable error measure has worked well as a performance measure in highway driving. Twenty novice participants were recruited to participate in a study that tested flying performance in a simulator criterion trial following simulated flight training. The data were analyzed first using a common root mean square error measure (combined error). The same data were subsequently analyzed using a variable error measure and the results were compared and contrasted. Results indicated that the variable error approach was sensitive, precise, and efficient when measuring pilot performance. Explanations for why this is a particularly suitable approach in an aviation context are provided. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aviation Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIR pilots KW - FLIGHT simulators KW - AIRLINE industry KW - ERRORS KW - PERFORMANCE evaluation KW - STANDARD deviations KW - UNITED States KW - UNITED States. Federal Aviation Administration N1 - Accession Number: 66285972; McClernon, Christopher K. 1; Email Address: christopher.mcclernon@wpafb.af.mil Miller, James C. 2; Affiliation: 1: Air Force Research Laboratory, Wright Patterson Air Force Base, USA 2: Miller Ergonomics; Source Info: Oct-Dec2011, Vol. 21 Issue 4, p397; Subject Term: AIR pilots; Subject Term: FLIGHT simulators; Subject Term: AIRLINE industry; Subject Term: ERRORS; Subject Term: PERFORMANCE evaluation; Subject Term: STANDARD deviations; Subject Term: UNITED States; Company/Entity: UNITED States. Federal Aviation Administration; NAICS/Industry Codes: 481111 Scheduled Passenger Air Transportation; NAICS/Industry Codes: 481110 Scheduled air transportation; NAICS/Industry Codes: 926120 Regulation and Administration of Transportation Programs; Number of Pages: 16p; Document Type: Article L3 - 10.1080/10508414.2011.606765 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66285972&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Al-Rjoub, Marwan F. AU - Roy, Ajit K. AU - Ganguli, Sabyasachi AU - Banerjee, Rupak K. T1 - Assessment of an active-cooling micro-channel heat sink device, using electro-osmotic flow JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2011/10// VL - 54 IS - 21/22 M3 - Article SP - 4560 EP - 4569 SN - 00179310 AB - Abstract: Non-uniform heat flux generated by microchips causes “hot spots” in very small areas on the microchip surface. These hot spots are generated by the logic blocks in the microchip bay; however, memory blocks generate lower heat flux on contrast. The goal of this research is to design, fabricate, and test an active cooling micro-channel heat sink device that can operate under atmospheric pressure while achieving high-heat dissipation rate with a reduced chip-backside volume, particularly for spot cooling applications. An experimental setup was assembled and electro-osmotic flow (EOF) was used thus eliminating high pressure pumping system. A flow rate of 82μL/min was achieved at 400V of applied EOF voltage. An increase in the cooling fluid (buffer) temperature of 9.6°C, 29.9°C, 54.3°C, and 80.1°C was achieved for 0.4W, 1.2W, 2.1W, and 4W of heating powers, respectively. The substrate temperature at the middle of the microchannel was below 80.5°C for all input power values. The maximum increase in the cooling fluid temperature due to the joule heating was 4.5°C for 400V of applied EOF voltage. Numerical calculations of temperatures and flow were conducted and the results were compared to experimental data. Nusselt number (Nu) for the 4W case reached a maximum of 5.48 at the channel entrance and decreased to reach 4.56 for the rest of the channel. Nu number for EOF was about 10% higher when compared to the pressure driven flow. It was found that using a shorter channel length and an EOF voltage in the range of 400–600V allows application of a heat flux in the order of 104 W/m2, applicable to spot cooling. For elevated voltages, the velocity due to EOF increased, leading to an increase in total heat transfer for a fixed duration of time; however, the joule heating also got elevated with increase in voltage. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT sinks (Electronics) -- Design & construction KW - ELECTRO-osmosis KW - HEAT flux KW - INTEGRATED circuits KW - COOLING KW - HIGH pressure (Technology) KW - PUMPING machinery KW - NUMERICAL analysis KW - NUSSELT number KW - HEAT transfer KW - ZETA potential KW - Electro-osmotic flow KW - EOF KW - Hot spot cooling KW - Micro-scale heat exchanger KW - Zeta-potential N1 - Accession Number: 63189318; Al-Rjoub, Marwan F. 1 Roy, Ajit K. 2 Ganguli, Sabyasachi 2,3 Banerjee, Rupak K. 1; Email Address: rupak.banerjee@uc.edu; Affiliation: 1: School of Dynamic Systems, University of Cincinnati, Cincinnati, OH, USA 2: Thermal Sciences and Materials Branch (AFRL/RXBT), Air Force Research Laboratory, WPAFB, OH, USA 3: University of Dayton Research Institute, Dayton, OH, USA; Source Info: Oct2011, Vol. 54 Issue 21/22, p4560; Subject Term: HEAT sinks (Electronics) -- Design & construction; Subject Term: ELECTRO-osmosis; Subject Term: HEAT flux; Subject Term: INTEGRATED circuits; Subject Term: COOLING; Subject Term: HIGH pressure (Technology); Subject Term: PUMPING machinery; Subject Term: NUMERICAL analysis; Subject Term: NUSSELT number; Subject Term: HEAT transfer; Subject Term: ZETA potential; Author-Supplied Keyword: Electro-osmotic flow; Author-Supplied Keyword: EOF; Author-Supplied Keyword: Hot spot cooling; Author-Supplied Keyword: Micro-scale heat exchanger; Author-Supplied Keyword: Zeta-potential; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 333911 Pump and Pumping Equipment Manufacturing; NAICS/Industry Codes: 333910 Pump and compressor manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2011.06.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=63189318&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Shuo AU - Fried, J. R. AU - Sauer, Jeremy AU - Colebrook, John AU - Dudis, Douglas S. T1 - Computational chemistry and molecular simulations of phosphoric acid. JO - International Journal of Quantum Chemistry JF - International Journal of Quantum Chemistry Y1 - 2011/10// VL - 111 IS - 12 M3 - Article SP - 3212 EP - 3229 SN - 00207608 KW - PHOSPHORIC acid KW - MOLECULAR dynamics KW - SIMULATION methods & models KW - PROTON transfer reactions KW - QUANTUM chemistry KW - ATOMIC models KW - DENSITY functionals KW - POTENTIAL barrier N1 - Accession Number: 62384728; Li, Shuo 1 Fried, J. R. 1 Sauer, Jeremy 2 Colebrook, John 3 Dudis, Douglas S. 4; Affiliation: 1: Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, OH 45221-0012 2: Department of Chemical Engineering, University of Massachusetts (Amherst), MA 01003 3: Department of Chemical Engineering, Bucknell University, Lewisburg, PA 17837 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, OH 45433; Source Info: Oct2011, Vol. 111 Issue 12, p3212; Subject Term: PHOSPHORIC acid; Subject Term: MOLECULAR dynamics; Subject Term: SIMULATION methods & models; Subject Term: PROTON transfer reactions; Subject Term: QUANTUM chemistry; Subject Term: ATOMIC models; Subject Term: DENSITY functionals; Subject Term: POTENTIAL barrier; NAICS/Industry Codes: 325312 Phosphatic Fertilizer Manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; Number of Pages: 18p; Illustrations: 1 Color Photograph, 7 Diagrams, 6 Charts, 4 Graphs; Document Type: Article L3 - 10.1002/qua.22702 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62384728&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cox, Daniel W. AU - Ghahramanlou-Holloway, Marjan AU - Greene, Farrah N. AU - Bakalar, Jennifer L. AU - Schendel, Christina L. AU - Nademin, M. Elicia AU - Jobes, David A. AU - Englert, David R. AU - Kindt, Michael T1 - Suicide in the United States Air Force: Risk factors communicated before and at death JO - Journal of Affective Disorders JF - Journal of Affective Disorders Y1 - 2011/10// VL - 133 IS - 3 M3 - Article SP - 398 EP - 405 SN - 01650327 AB - Abstract: Background: Over the last decade, suicide rates in the U.S. military have steadily increased, resulting in a call for suicide-related research with military populations. The present project aimed to describe and evaluate the communications (i.e., verbally and in suicide notes) of 13 suicide risk factors in the suicide death investigation files of 98 active duty U.S. Air Force (USAF) members. Methods: Two-hundred thirty-seven suicide death investigation files were coded. Ninety-eight decedents left suicide notes and were included in the current analyses. Descriptive statistics were computed to evaluate the types of risk factors most commonly communicated prior to and at the time of death as well as the medium for their communication. Specifically, verbal and note communications were compared to evaluate which medium decedents most often used to communicate risk factors. Also, the frequency that interpersonal compared to intrapsychic risk factors were communicated was evaluated. Results: Hopelessness (35.7% of cases) and perceived burdensomeness (31.6% of cases) were the risk factors most often communicated in suicide notes but not verbally. Thwarted belongingness (29.6% of cases) was the risk factor most often communicated verbally and in the suicide note. Further, evaluated risk factors were more frequently communicated in suicide notes than verbally. Finally, interpersonal risk factors were more often communicated than intrapsychic risk factors. Limitations: The validity of the data relies on interviews of decedents'' acquaintances and various medical/military records. Conclusions: Our findings support emphasizing certain risk factors over others in USAF suicide prevention efforts. Further, interpersonal risk factors appeared to be more salient than intrapsychic risk factors in the minds of decedents. [Copyright &y& Elsevier] AB - Copyright of Journal of Affective Disorders is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUICIDE -- Risk factors KW - SUICIDE notes KW - SUICIDE prevention KW - MEDICAL records KW - INTERPERSONAL psychotherapy KW - UNITED States KW - Air force KW - Interpersonal KW - Military KW - Suicide KW - Suicide note KW - Suicide risk factor KW - UNITED States. Air Force N1 - Accession Number: 65043018; Cox, Daniel W. 1 Ghahramanlou-Holloway, Marjan 1; Email Address: mholloway@usuhs.mil Greene, Farrah N. 1 Bakalar, Jennifer L. 1 Schendel, Christina L. 1 Nademin, M. Elicia 2 Jobes, David A. 3 Englert, David R. 4 Kindt, Michael 5; Affiliation: 1: Department of Medical and Clinical Psychology, Uniformed Services University of the Health Sciences, Bethesda, MD, USA 2: Veteran's Administration and Private Practice, Phoenix, AZ, USA 3: Department of Psychology, The Catholic University of America, Washington, DC, USA 4: United States Air Force Office of Special Investigations, Andrews AFB, MD, USA 5: United States Air Force Suicide Prevention Program, Lackland AFB, TX, USA; Source Info: Oct2011, Vol. 133 Issue 3, p398; Subject Term: SUICIDE -- Risk factors; Subject Term: SUICIDE notes; Subject Term: SUICIDE prevention; Subject Term: MEDICAL records; Subject Term: INTERPERSONAL psychotherapy; Subject Term: UNITED States; Author-Supplied Keyword: Air force; Author-Supplied Keyword: Interpersonal; Author-Supplied Keyword: Military; Author-Supplied Keyword: Suicide; Author-Supplied Keyword: Suicide note; Author-Supplied Keyword: Suicide risk factor; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jad.2011.05.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65043018&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bedford, Robert G. AU - Triplett, Gregory AU - Tomich, David H. AU - W. Koch, Stephan AU - Moloney, Jerome AU - Hader, Jörg T1 - Reduced auger recombination in mid-infrared semiconductor lasers. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/10// VL - 110 IS - 7 M3 - Article SP - 073108 PB - American Institute of Physics SN - 00218979 AB - A quantum-design approach to reduce the Auger losses in λ = 2 μm InGaSb type-I quantum well edge-emitting lasers is reported. Experimentally realized structures show a ∼3 × reduction in the threshold, which results in 4.6 × lower Auger current loss at room temperature. This is equivalent to a carrier lifetime improvement of 5.7 × and represents about a 19-fold reduction in the equivalent 'Auger coefficient.' [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AUGER effect KW - INTERNAL conversion (Nuclear physics) KW - LASERS KW - OPTOELECTRONIC devices KW - QUANTUM wells N1 - Accession Number: 66589867; Bedford, Robert G. 1 Triplett, Gregory 2 Tomich, David H. 1 W. Koch, Stephan 3 Moloney, Jerome 4 Hader, Jörg 4; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate Wright-Patterson Air Force Base, Ohio 45433, 2: University of Missouri, Department of Electrical and Computer Engineering Columbia, Missouri 65211, 3: Phillips Universität Marburg, Department of Physics and Material Sciences Center Marburg, Germany 35032 4: Nonlinear Control Strategies, Inc., Tucson, Arizona 85705,; Source Info: Oct2011, Vol. 110 Issue 7, p073108; Subject Term: AUGER effect; Subject Term: INTERNAL conversion (Nuclear physics); Subject Term: LASERS; Subject Term: OPTOELECTRONIC devices; Subject Term: QUANTUM wells; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.3646552 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66589867&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gumbs, Godfrey AU - Balassis, Antonios AU - Huang, Danhong AU - Ahmed, Sheehan AU - Brennan, Ryan T1 - A half-step in quantized conductance for low-density electrons in a quantum wire. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/10// VL - 110 IS - 7 M3 - Article SP - 073709 PB - American Institute of Physics SN - 00218979 AB - We investigated the effect of perpendicular magnetic field on quantum wires when the spin-orbit interaction (SOI) of electrons is not neglected. Based on the calculated energy dispersion, the nonlinear ballistic conductance (G) and electron-diffusion thermoelectric power (Sd) are calculated as functions of the electron density, temperature and applied bias voltage. A low-temperature half-step feature in G that was observed experimentally by Quay et al. [Nat. Phys. 6, 336 (2010)], as well as a new peak in Sd are reproduced here in the low density region. These phenomena are related to the occurrence of Zeeman splitting and a SOI induced saddle point in the band structure where the channel chemical potential lies within an anticrossing gap between the saddle point of the lower subband and the bottom of the upper subband. Additionally, side peaks in G that are far away from the zero bias for the nonlinear transport, as well as a quadratic bias-voltage dependence of G near zero voltage, are predicted and discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS -- Research KW - THERMOELECTRIC materials -- Research KW - THERMOELECTRICITY KW - RESEARCH KW - NANOWIRES KW - MAGNETIC fields KW - ELECTRON distribution -- Research KW - ZEEMAN effect N1 - Accession Number: 66589846; Gumbs, Godfrey 1,2 Balassis, Antonios 3 Huang, Danhong 4 Ahmed, Sheehan 3 Brennan, Ryan 3; Affiliation: 1: Department of Physics and Astronomy, Hunter College of the City University of New York, 695 Park Avenue, New York, New York 10065, 2: Donostia International Physics Center (DIPC), P. de Manuel Lardizabal, 4, 20018 San Sebastián, Basque Country, 3: Physics Department, Fordham University, 441 East Fordham Road, Bronx, New York 10458, 4: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117,; Source Info: Oct2011, Vol. 110 Issue 7, p073709; Subject Term: ELECTRONS -- Research; Subject Term: THERMOELECTRIC materials -- Research; Subject Term: THERMOELECTRICITY; Subject Term: RESEARCH; Subject Term: NANOWIRES; Subject Term: MAGNETIC fields; Subject Term: ELECTRON distribution -- Research; Subject Term: ZEEMAN effect; Number of Pages: 7p; Document Type: Article L3 - 10.1063/1.3646555 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66589846&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Langhinrichsen-Rohling, Jennifer AU - Snarr, Jeffery D. AU - Slep, Amy M. Smith AU - Heyman, Richard E. AU - Foran, Heather M. T1 - Risk for Suicidal Ideation in the U.S. Air Force: An Ecological Perspective. JO - Journal of Consulting & Clinical Psychology JF - Journal of Consulting & Clinical Psychology Y1 - 2011/10// VL - 79 IS - 5 M3 - Article SP - 600 EP - 612 SN - 0022006X AB - Objective: Suicidal members of the U.S. military often fail to disclose their suicidal urges and behaviors. Military suicide prevention efforts may therefore be enhanced if they also target less stigmatized psychosocial factors that may decrease risk of suicidality. In keeping with Bronfenbrenner's (1977, 1994) model, this study simultaneously examined 4 ecological levels (i.e., individual, family, workplace, and community) of factors variously associated with increased or decreased risk for suicidal ideation. Method: Active-duty U.S. Air Force members (N = 52,780; 79.3% male; 79.2% non-Hispanic White; mean age = 31.78 years, SD = 7.38) completed the 2006 Community Assessment survey (a biennial, anonymous survey conducted at 82 U.S. Air Force bases worldwide), including the Centers for Disease Control and Prevention's (2008) 5-item measure of past-year suicidality along with scales assessing an array of potential predictors. Results: The 1-year rate of suicidal ideation, defined as (a) more than rarely thinking about suicide or (b) ever seriously considering suicide, was approximately 4%. In multivariate models, for men and women, individual- (depressive symptoms and alcohol problems), family- (relationship satisfaction and intimate partner victimization), workplace- (hours worked), and community-level (social support) variables were retained in the final model. However, some sex differences in retained predictors were noted (e.g., men: dissatisfaction with the U.S. Air Force way of life; women: workplace relationship satisfaction and financial stressors). Conclusions: Addressing depressive symptoms and alcohol use, facilitating healthy relationship functioning, and increasing job satisfaction and social support may aid military suicide prevention efforts. These findings illustrate the importance of attending to multiple levels of potential influence when designing integrated suicide prevention and intervention programs. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Consulting & Clinical Psychology is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUICIDAL ideation KW - SUICIDAL behavior -- Risk factors KW - SUICIDE prevention KW - SELF-destructive behavior KW - ecological model KW - military KW - risk and promotive factors KW - suicidal ideation KW - suicide KW - UNITED States. Air Force N1 - Accession Number: 66510602; Langhinrichsen-Rohling, Jennifer 1; Email Address: jlr@usouthal.edu Snarr, Jeffery D. 2 Slep, Amy M. Smith 2 Heyman, Richard E. 2 Foran, Heather M. 2; Affiliation: 1: University of South Alabama, United States Air Force Family Advocacy Program Lackland-Kelly Air Force Base, San Antonio, Texas 2: Stony Brook University, United States Air Force Family Advocacy Program Lackland-Kelly Air Force Base, San Antonio, Texas; Source Info: Oct2011, Vol. 79 Issue 5, p600; Subject Term: SUICIDAL ideation; Subject Term: SUICIDAL behavior -- Risk factors; Subject Term: SUICIDE prevention; Subject Term: SELF-destructive behavior; Author-Supplied Keyword: ecological model; Author-Supplied Keyword: military; Author-Supplied Keyword: risk and promotive factors; Author-Supplied Keyword: suicidal ideation; Author-Supplied Keyword: suicide; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 13p; Document Type: Article L3 - 10.1037/a0024631 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66510602&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wilmink, Gerald AU - Grundt, Jessica T1 - Invited Review Article: Current State of Research on Biological Effects of Terahertz Radiation. JO - Journal of Infrared, Millimeter & Terahertz Waves JF - Journal of Infrared, Millimeter & Terahertz Waves Y1 - 2011/10// VL - 32 IS - 10 M3 - Article SP - 1074 EP - 1122 SN - 18666892 AB - Terahertz (THz) imaging and sensing technologies are increasingly being used in a host of medical, military, and security applications. For example, THz systems are now being tested at international airports for security screening purposes, at major medical centers for cancer and burn diagnosis, and at border patrol checkpoints for identification of concealed explosives, drugs, and weapons. Recent advances in THz applications have stimulated renewed interest regarding the biological effects associated with this frequency range. Biological effects studies are a valuable type of basic science research because they serve to enhance our fundamental understanding of the mechanisms that govern THz interactions with biological systems. Such studies are also important because they often times lay the foundation for the development of future applications. In addition, from a practical standpoint, THz biological effects research is also necessary for accurate health hazard evaluation, the development of empirically-based safety standards, and for the safe use of THz systems. Given the importance and timeliness of THz bioeffects data, the purpose of this review is twofold. First, to provide readers with a common reference, which contains the necessary background concepts in biophysics and THz technology, that are required to both conduct and evaluate THz biological research. Second, to provide a critical review of the scientific literature. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Infrared, Millimeter & Terahertz Waves is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATION KW - INTERNATIONAL airports KW - CANCER -- Diagnosis KW - BURNS & scalds KW - DIAGNOSIS KW - BORDER patrols KW - BIOPHYSICS KW - Biological effects KW - Cellular effects KW - Gene expression KW - Invited review KW - Microarray KW - Radiation KW - Review article KW - Terahertz KW - Thermal effects KW - THz N1 - Accession Number: 66478070; Wilmink, Gerald 1; Email Address: gerald.wilmink@us.af.mil Grundt, Jessica 1; Affiliation: 1: 711th Human Performance Wing, Radio Frequency Radiation Branch, Air Force Research Laboratory, Fort Sam Houston USA; Source Info: Oct2011, Vol. 32 Issue 10, p1074; Subject Term: RADIATION; Subject Term: INTERNATIONAL airports; Subject Term: CANCER -- Diagnosis; Subject Term: BURNS & scalds; Subject Term: DIAGNOSIS; Subject Term: BORDER patrols; Subject Term: BIOPHYSICS; Author-Supplied Keyword: Biological effects; Author-Supplied Keyword: Cellular effects; Author-Supplied Keyword: Gene expression; Author-Supplied Keyword: Invited review; Author-Supplied Keyword: Microarray; Author-Supplied Keyword: Radiation; Author-Supplied Keyword: Review article; Author-Supplied Keyword: Terahertz; Author-Supplied Keyword: Thermal effects; Author-Supplied Keyword: THz; Number of Pages: 49p; Document Type: Article L3 - 10.1007/s10762-011-9794-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66478070&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - PILCHAK, A.L. AU - SHIVELEY, A.R. AU - TILEY, J.S. AU - BALLARD, D.L. T1 - AnyStitch: a tool for combining electron backscatter diffraction data sets. JO - Journal of Microscopy JF - Journal of Microscopy Y1 - 2011/10// VL - 244 IS - 1 M3 - Article SP - 38 EP - 44 PB - Wiley-Blackwell SN - 00222720 AB - Summary Recent advances in electron backscatter diffraction equipment and software have permitted increased data acquisition rates on the order of hundreds of points per second with additional increases in the foreseeable future likely. This increase in speed allows users to collect data from statistically significant areas of samples by combining beam-control scans and automated stage movements. To facilitate data analysis, however, the individual tiles must be combined, or stitched, into a single data set. In this paper, we describe a matlab® (The Mathworks, Inc., Natick, MA, USA) program to facilitate stitching of electron backscatter diffraction data. The method offers users a wide range of controls for tile placement including independent overlaps for horizontal and vertical tiles and also includes a parameter to account for systematic stage positioning errors or improperly calibrated scan rotation. The code can stitch data collected on either square or hexagonal grids and contains a function to reduce the resolution of square grid data if the resulting file is too large (or has too many grains) to be opened by the analysis software. The software was primarily written to work with TSL® OIM™ data sets and includes a function to quickly read compressed *.osc files into a variable in the matlab® workspace as opposed to using slower, text-reading functions. The output file is in *.ang format and can be opened directly by TSL® OIM™ Analysis software. A set of functions to facilitate stitching of text-based *.ctf files produced by Oxford Instruments HKL systems are also included. Finally, the code can also be used to combine *.tif images to produce a montage. The source code, a graphical user interface and a compiled version of the software was made available in the online version of this paper. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microscopy is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS -- Backscattering KW - ELECTRON diffraction KW - ACQUISITION of data KW - MEASUREMENT errors KW - GRAPHICAL user interfaces (Computer systems) KW - DATA analysis N1 - Accession Number: 65278708; PILCHAK, A.L. 1,2 SHIVELEY, A.R. 1,2 TILEY, J.S. 1 BALLARD, D.L. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate/RXLM, Wright Patterson Air Force Base, Ohio, U.S.A. 2: Universal Technology Corporation, Dayton, Ohio, U.S.A.; Source Info: Oct2011, Vol. 244 Issue 1, p38; Subject Term: ELECTRONS -- Backscattering; Subject Term: ELECTRON diffraction; Subject Term: ACQUISITION of data; Subject Term: MEASUREMENT errors; Subject Term: GRAPHICAL user interfaces (Computer systems); Subject Term: DATA analysis; Number of Pages: 7p; Illustrations: 3 Color Photographs, 4 Diagrams, 1 Graph; Document Type: Article L3 - 10.1111/j.1365-2818.2011.03496.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65278708&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Naito, Clay AU - Dinan, Robert AU - Bewick, Bryan T1 - Use of Precast Concrete Walls for Blast Protection of Steel Stud Construction. JO - Journal of Performance of Constructed Facilities JF - Journal of Performance of Constructed Facilities Y1 - 2011/10// VL - 25 IS - 5 M3 - Article SP - 454 EP - 463 PB - American Society of Civil Engineers SN - 08873828 AB - This research study examines the use of a precast concrete panel system for blast protection of facilities with exterior light gauge metal stud walls. The structural retrofit is designed for the specific case where internal operation of the facility cannot be interrupted. To meet this design requirement, a series of precast concrete panels are installed exterior to the building envelope with connections to the foundation at ground level and to the steel building frame at upper floor levels. To validate the retrofit concept, two explosive detonations representing relatively low and high blast threat levels are examined. An exterior insulation and finishing system (EIFS) clad stud wall and a precast concrete protected stud wall are examined under each demand level. The measured responses of both systems are compared with each other and with basic dynamic predictive models. In addition, a finite element study of the connection is conducted to estimate support demands for the blast retrofit. The research results show that the precast wall system provides effective protection of the exterior wall. The research also shows that EIFS clad metal stud wall systems retain significant resilience under blast demands. The dynamic responses of the systems are predictable using standard elastic-plastic dynamic modeling assumptions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Performance of Constructed Facilities is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRECAST concrete KW - CONCRETE panels KW - BLAST effect KW - WALLS KW - CONCRETE N1 - Accession Number: 66950241; Naito, Clay 1; Email Address: cjn3@lehigh.edu Dinan, Robert 2 Bewick, Bryan 3; Affiliation: 1: Associate Professor, Dept. of Civil and Environmental Engineering, Lehigh Univ., ATLSS Center, 117 ATLSS Dr., Bethlehem, PA 18015 (corresponding author) 2: Senior Research Engineer, Air Force Research Laboratory, AFRL.RXQF, Tyndall Air Force Base, FL 32404. 3: Research Engineer, Air Force Research Laboratory, AFRL.RXQF, Tyndall Air Force Base, FL 32404.; Source Info: Oct2011, Vol. 25 Issue 5, p454; Subject Term: PRECAST concrete; Subject Term: CONCRETE panels; Subject Term: BLAST effect; Subject Term: WALLS; Subject Term: CONCRETE; NAICS/Industry Codes: 327999 All Other Miscellaneous Nonmetallic Mineral Product Manufacturing; NAICS/Industry Codes: 327320 Ready-Mix Concrete Manufacturing; NAICS/Industry Codes: 238120 Structural Steel and Precast Concrete Contractors; NAICS/Industry Codes: 327330 Concrete pipe, brick and block manufacturing; NAICS/Industry Codes: 327390 Other Concrete Product Manufacturing; Number of Pages: 10p; Illustrations: 3 Color Photographs, 3 Black and White Photographs, 1 Illustration, 3 Charts, 6 Graphs; Document Type: Article L3 - 10.1061/(ASCE)CF.1943-5509.0000228 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66950241&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Charles, Patrick J. T1 - SCRIBBLE SCRABBLE, THE SECOND AMENDMENT, AND HISTORICAL GUIDEPOSTS: A SHORT REPLY TO LAWRENCE ROSENTHAL AND JOYCE LEE MALCOLM. JO - Northwestern University Law Review JF - Northwestern University Law Review Y1 - 2011///Fall2011 VL - 105 IS - 4 M3 - Essay SP - 1821 EP - 1840 PB - Northwestern University School of Law SN - 00293571 KW - MCDONALD v. City of Chicago (Supreme court case) KW - DISTRICT of Columbia v. Heller (Supreme Court case) KW - FIREARMS -- Law & legislation KW - JURISPRUDENCE KW - CONSTITUTIONAL law -- United States KW - UNITED States KW - UNITED States. Constitution. 2nd Amendment N1 - Accession Number: 74029224; Charles, Patrick J. 1,2,3; Affiliation: 1: Independent legal consultant on historical, immigration, and constitutional matters, United States Air Force (Mildenhall, UK) 2: J.D., Cleveland-Marshall School of Law 3: George Washington University; Source Info: Fall2011, Vol. 105 Issue 4, p1821; Subject Term: MCDONALD v. City of Chicago (Supreme court case); Subject Term: DISTRICT of Columbia v. Heller (Supreme Court case); Subject Term: FIREARMS -- Law & legislation; Subject Term: JURISPRUDENCE; Subject Term: CONSTITUTIONAL law -- United States; Subject Term: UNITED States; Company/Entity: UNITED States. Constitution. 2nd Amendment; Number of Pages: 20p; Document Type: Essay UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74029224&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gunzelmann, Glenn T1 - Introduction to the Topic on Modeling Spatial Cognition. JO - Topics in Cognitive Science JF - Topics in Cognitive Science Y1 - 2011/10// VL - 3 IS - 4 M3 - Article SP - 628 EP - 631 SN - 17568757 AB - Our ability to process spatial information is fundamental for understanding and interacting with the environment, and it pervades other components of cognitive functioning from language to mathematics. Moreover, technological advances have produced new capabilities that have created research opportunities and astonishing applications. In this Topic on Modeling Spatial Cognition, research crossing a variety of disciplines and methodologies is described, all focused on developing models to represent the capacities and limitations of human spatial cognition. [ABSTRACT FROM AUTHOR] AB - Copyright of Topics in Cognitive Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE perception KW - COGNITION -- Research N1 - Accession Number: 66588989; Gunzelmann, Glenn 1; Affiliation: 1: Air Force Research Laboratory; Source Info: Oct2011, Vol. 3 Issue 4, p628; Subject Term: SPACE perception; Subject Term: COGNITION -- Research; Number of Pages: 4p; Document Type: Article L3 - 10.1111/j.1756-8765.2011.01160.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66588989&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gunzelmann, Glenn AU - Lyon, Don R. T1 - Representations and Processes of Human Spatial Competence. JO - Topics in Cognitive Science JF - Topics in Cognitive Science Y1 - 2011/10// VL - 3 IS - 4 M3 - Article SP - 741 EP - 759 SN - 17568757 AB - This article presents an approach to understanding human spatial competence that focuses on the representations and processes of spatial cognition and how they are integrated with cognition more generally. The foundational theoretical argument for this research is that spatial information processing is central to cognition more generally, in the sense that it is brought to bear ubiquitously to improve the adaptivity and effectiveness of perception, cognitive processing, and motor action. We describe research spanning multiple levels of complexity to understand both the detailed mechanisms of spatial cognition, and how they are utilized in complex, naturalistic tasks. In the process, we discuss the critical role of cognitive architectures in developing a consistent account that spans this breadth, and we note some areas in which the current version of a popular architecture, ACT-R, may need to be augmented. Finally, we suggest a framework for understanding the representations and processes of spatial competence and their role in human cognition generally. [ABSTRACT FROM AUTHOR] AB - Copyright of Topics in Cognitive Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE perception KW - COGNITION -- Research KW - COGNITIVE ability KW - SPATIAL ability KW - COGNITIVE structures N1 - Accession Number: 66588988; Gunzelmann, Glenn 1 Lyon, Don R. 2; Affiliation: 1: Air Force Research Laboratory 2: L3 Communications at Air Force Research Laboratory; Source Info: Oct2011, Vol. 3 Issue 4, p741; Subject Term: SPACE perception; Subject Term: COGNITION -- Research; Subject Term: COGNITIVE ability; Subject Term: SPATIAL ability; Subject Term: COGNITIVE structures; Number of Pages: 19p; Document Type: Article L3 - 10.1111/j.1756-8765.2011.01153.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66588988&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Myers, Christopher W. AU - Gray, Wayne D. AU - Sims, Chris R. T1 - The insistence of vision: Why do people look at a salient stimulus when it signals target absence? JO - Visual Cognition JF - Visual Cognition Y1 - 2011/10// VL - 19 IS - 9 M3 - Article SP - 1122 EP - 1157 PB - Taylor & Francis Ltd SN - 13506285 AB - Researchers and practitioners across many fields would benefit from the ability to predict human search time in complex visual displays. However, a missing element in our ability to predict search time is our ability to quantify the exogenous attraction of visual objects in terms of their impact on search time. The current work represents an initial step in this direction. We present two experiments using a quadrant search task to investigate how exogenous and endogenous factors influence human visual search. In Experiment 1, we measure the oculomotor capture—or the tendency of a stimulus to elicit a saccade—of a salient quadrant under conditions in which the salient quadrant does not predict target location. Despite the irrelevance of quadrant salience, we find that subjects persist in making saccades towards the salient quadrant at above-chance levels. We then present a Bayesian-based ideal performer model that predicts search time and oculomotor capture when the salient quadrant never contains the search target. Experiment 2 tested the predictions of the ideal performer model and revealed human performance to be in close correspondence with the model. We conclude that, in our speeded search task, the influence of an exogenous attractor on saccades can be quantified in terms of search time costs and, when these costs are considered, both search time and search behaviour reflect a boundedly optimal adaptation to the cost structure of the environment. [ABSTRACT FROM AUTHOR] AB - Copyright of Visual Cognition is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VISUAL evoked response KW - VISUAL perception KW - DISPLAY systems KW - EYE -- Movements KW - PERFORMANCE evaluation KW - SEARCHING behavior KW - COGNITIVE ability KW - HUMAN beings KW - Endogenous KW - Exogenous KW - Ideal performer model KW - Saccadic reaction time KW - Visual search N1 - Accession Number: 67326410; Myers, Christopher W. 1; Email Address: christopher.myers2@wpafb.af.mil Gray, Wayne D. 2 Sims, Chris R. 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson, AFB, USA 2: Cognitive Science Department, Rensselaer Polytechnic Institute, USA 3: Brain & Cognitive Systems, University of Rochester, USA; Source Info: Oct2011, Vol. 19 Issue 9, p1122; Subject Term: VISUAL evoked response; Subject Term: VISUAL perception; Subject Term: DISPLAY systems; Subject Term: EYE -- Movements; Subject Term: PERFORMANCE evaluation; Subject Term: SEARCHING behavior; Subject Term: COGNITIVE ability; Subject Term: HUMAN beings; Author-Supplied Keyword: Endogenous; Author-Supplied Keyword: Exogenous; Author-Supplied Keyword: Ideal performer model; Author-Supplied Keyword: Saccadic reaction time; Author-Supplied Keyword: Visual search; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; Number of Pages: 36p; Document Type: Article L3 - 10.1080/13506285.2011.614379 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67326410&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Matthew J. Dalton AU - Ramamurthi Kannan AU - Joy E. Haley AU - Guang S. He AU - Daniel G. McLean AU - Thomas M. Cooper AU - Paras N. Prasad AU - Loon-Seng Tan T1 - Aromatic Polyimides Containing Main-Chain Diphenylaminofluorene–Benzothiazole Motif: Fluorescence Quenching, Two-Photon Properties, and Exciplex Formation in a Solid State. JO - Macromolecules JF - Macromolecules Y1 - 2011/09/27/ VL - 44 IS - 18 M3 - Article SP - 7194 EP - 7206 SN - 00249297 AB - A new bis(4-aminophenoxy) monomer containing a two-photon absorbing (2PA) and fluorescent diphenylaminodiethylfluorene–benzothiazole chromophore (AF240) was synthesized and used as a comonomer in preparing a series of heat-resistant, 2PA-active polyimides. Highly organo-soluble, these polymers easily formed optically clear, but nonfluorescent, films that contained covalently bound, AF240-like dye in concentrations up to ∼1.0 M. For comparison purposes, a model compound (AF349) with phthalimido end-caps was also prepared. From the fluorescence data, the presence of phthalimido moieties in both the model compound and the polymers drastically quenched the fluorescence emission from the 2PA moieties of these materials in solution as well as in solid state. Their intrinsic (at 780 nm and with 160 fs pulses) and effective (at 800 nm and 8 ns pulses) two-photon properties in THF solutions (0.02 M), and film samples (40–65 μm thick) were determined by a direct nonlinear transmission technique. Thus, their intrinsic (σ(2)fs) and effective cross-section (σ(2)ns) values in solutionare 7.7–37 and 1070–6000 GM per repeat unit, respectively. Surprisingly for the film samples, while the σ(2)fsvalues agree with those determined in solutions, the σ(2)nsvalues are 7–9 times larger, depending on the dye content. On the basis of the results of photophysical characterization of these polymers, we propose that on a nanosecond or slower time scale a stabilized/confined excited state complex is formed in an intrachainmode between an AF240-like moiety and a phthalimido unit to reasonably account for the fluorescence quenching and enhancement in the effective two-photon responses in film form. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AROMATIC compounds KW - POLYIMIDES KW - FLUORENE KW - THIAZOLES KW - SOLID state chemistry KW - MONOMERS KW - TWO-photon absorbing materials KW - SAMPLE preparation (Chemistry) N1 - Accession Number: 65846595; Matthew J. Dalton 1 Ramamurthi Kannan 1 Joy E. Haley 1 Guang S. He 1 Daniel G. McLean 1 Thomas M. Cooper 1 Paras N. Prasad 1 Loon-Seng Tan 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright-Patterson AFB, Ohio 45433-7750, United States; Source Info: Sep2011, Vol. 44 Issue 18, p7194; Subject Term: AROMATIC compounds; Subject Term: POLYIMIDES; Subject Term: FLUORENE; Subject Term: THIAZOLES; Subject Term: SOLID state chemistry; Subject Term: MONOMERS; Subject Term: TWO-photon absorbing materials; Subject Term: SAMPLE preparation (Chemistry); NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65846595&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, Sang N. AU - Zhifeng Kuang AU - Slocik, Joseph M. AU - Jones, Sharon E. AU - Yue Cui AU - Farmer, Barry L. AU - McAlpine, Michael C. AU - Naik, Rajesh R. T1 - Preferential Binding of Peptides to Graphene Edges and Planes. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2011/09/21/ VL - 133 IS - 37 M3 - Article SP - 14480 EP - 14483 SN - 00027863 AB - Peptides identified from combinatorial peptide libraries have been shown to bind to a variety of abiotic surfaces. Biotic-abiotic interactions can be exploited to create hybrid materials with interesting electronic, optical, or catalytic properties. Here we show that peptides identified from a combinatorial phage display peptide library assemble preferentially to the edge or planar surface of graphene and can affect the electronic properties of graphene. Molecular dynamics simulations and experiments provide insight into the mechanism of peptide binding to the graphene edge. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PEPTIDES KW - GRAPHENE KW - MOLECULAR dynamics KW - CHEMICAL reactions KW - SURFACES (Technology) N1 - Accession Number: 66701846; Kim, Sang N. 1 Zhifeng Kuang 1 Slocik, Joseph M. 1 Jones, Sharon E. 1 Yue Cui 2 Farmer, Barry L. 1 McAlpine, Michael C. 2 Naik, Rajesh R. 1,2; Email Address: rajesh.naik@wapfb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, United States 2: Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544, United States; Source Info: 9/21/2011, Vol. 133 Issue 37, p14480; Subject Term: PEPTIDES; Subject Term: GRAPHENE; Subject Term: MOLECULAR dynamics; Subject Term: CHEMICAL reactions; Subject Term: SURFACES (Technology); Number of Pages: 4p; Document Type: Article L3 - 10.1021/ja2042832 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66701846&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lilly, Taylor AU - Ketsdever, Andrew AU - Cornella, Barry AU - Quiller, Trey AU - Gimelshein, Sergey T1 - Gas density perturbations induced by a pulsed optical lattice. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2011/09/19/ VL - 99 IS - 12 M3 - Article SP - 124101 PB - American Institute of Physics SN - 00036951 AB - A complimentary experimental and numerical investigation on density perturbations formed in molecular nitrogen by pulsed optical lattices was conducted. Experimental results on the effect of laser intensity and gas pressure on the magnitude of induced density perturbations from the free-molecular through continuum regimes using a coherent Rayleigh-Brillouin scattering technique are presented. The investigation further verifies the use of the direct simulation Monte Carlo method, extended to include the non-resonant optical dipole force, as a robust tool for the prediction of laser modification to a neutral gas. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL lattices KW - PERTURBATION (Quantum dynamics) KW - MOLECULAR dynamics KW - LIGHT -- Scattering KW - MONTE Carlo method N1 - Accession Number: 70946041; Lilly, Taylor 1 Ketsdever, Andrew 1 Cornella, Barry 2 Quiller, Trey 2 Gimelshein, Sergey 2; Affiliation: 1: Propulsion Directorate (AFRL/RZSA), Air Force Research Laboratory, Edwards AFB, California 93524, 2: ERC Inc., Edwards AFB, California 93524,; Source Info: 9/19/2011, Vol. 99 Issue 12, p124101; Subject Term: OPTICAL lattices; Subject Term: PERTURBATION (Quantum dynamics); Subject Term: MOLECULAR dynamics; Subject Term: LIGHT -- Scattering; Subject Term: MONTE Carlo method; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.3640216 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70946041&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kelecy, T. AU - Jah, M. T1 - Analysis of high area-to-mass ratio (HAMR) GEO space object orbit determination and prediction performance: Initial strategies to recover and predict HAMR GEO trajectories with no a priori information JO - Acta Astronautica JF - Acta Astronautica Y1 - 2011/09/15/ VL - 69 IS - 7/8 M3 - Article SP - 551 EP - 558 SN - 00945765 AB - Abstract: Optical deep space surveys are focusing on the study of a class of near Geosynchronous (GEO) objects characterized by high area-to-mass ratio (HAMR). Consistent cataloging and study of these HAMR objects requires repeated follow-up and tracking. The combination of lunar–solar gravitation, unmodeled solar radiation pressure dynamics, thermal emissions, and possibly passive electrostatic charging of the object interacting with the weak magnetic field at GEO results in unknown perturbations to the its trajectory. When these effects are combined with their apparent dim, time-varying reflective light intensity magnitudes, correctly identifying/associating tracks to the HAMR object is non-trivial. The focus of this work is to quantify the effects of the unmodeled accelerations on the reconstructed and predicted HAMR trajectory. Optical angle tracking data for several candidate HAMR objects were reduced and analyzed, and compared with results derived from the reduction of simulated optical angles data generated from the same sites, over comparable durations and using known dynamical models. Comparison of the orbit determination results provides insight into the effects of unmodeled errors on the estimated orbit parameters and their associated uncertainties. The results conclude that the orbit errors resulting from unmodeled rotational dynamics are significant, and can require the addition of process noise to properly account for the force model uncertainties to the total state error distribution. The results further demonstrate that the longer term solar radiation pressure effects are well determined with adequate observations, but determination of shorter term variations due to rotational dynamics are dependent on the area-to-mass ratio, measurement quality and estimation sampling interval. [Copyright &y& Elsevier] AB - Copyright of Acta Astronautica is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASTRODYNAMICS KW - ORBITS KW - SPACE surveillance KW - SPACE debris KW - GRAVITATION KW - MAGNETIC fields KW - PERFORMANCE evaluation KW - SOLAR radiation KW - Astrodynamics KW - Debris KW - Multiple-hypothesis estimation KW - Orbit determination KW - Space surveillance N1 - Accession Number: 63605080; Kelecy, T. 1; Email Address: thomas.m.kelecy@boeing.com Jah, M. 2; Affiliation: 1: The Boeing Company, USA 2: Air Force Research Laboratory, USA; Source Info: Sep2011, Vol. 69 Issue 7/8, p551; Subject Term: ASTRODYNAMICS; Subject Term: ORBITS; Subject Term: SPACE surveillance; Subject Term: SPACE debris; Subject Term: GRAVITATION; Subject Term: MAGNETIC fields; Subject Term: PERFORMANCE evaluation; Subject Term: SOLAR radiation; Author-Supplied Keyword: Astrodynamics; Author-Supplied Keyword: Debris; Author-Supplied Keyword: Multiple-hypothesis estimation; Author-Supplied Keyword: Orbit determination; Author-Supplied Keyword: Space surveillance; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.actaastro.2011.04.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=63605080&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alimov, O. AU - Basiev, T. AU - Konushkin, V. AU - Papashvili, A. AU - Karasik, A. AU - Henry, L. T1 - Investigations of Yb-doped optical fiber using selective laser excitation. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2011/09/15/ VL - 104 IS - 4 M3 - Article SP - 845 EP - 850 PB - Springer Science & Business Media B.V. SN - 09462171 AB - The method of tunable site-selective laser excitation was used for a study of the spectral and fluorescence characteristics of Yb optical centers in laser optical fiber. Decay curves and positions of fluorescence spectra maxima at different wavelengths of selective laser excitation and positions of excitation spectra maxima at different fluorescence selective registration provide new information on lifetimes and Stark energy distribution among inhomogeneously broadened Yb lines. The obtained Stark splitting energy distribution diagram demonstrates the tuneability of Yb laser oscillation wavelength under tunable excitation of a pump laser. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR doping KW - OPTICAL fibers KW - LASER beams KW - ELECTRONIC excitation KW - FLUORESCENCE spectroscopy KW - WAVELENGTHS KW - OPTICAL pumping KW - STARK effect N1 - Accession Number: 65322778; Alimov, O. 1 Basiev, T. 1; Email Address: basiev@lst.gpi.ru Konushkin, V. 1 Papashvili, A. 1 Karasik, A. 1 Henry, L. 2; Affiliation: 1: Prokhorov General Physics Institute RAS, Vavilov str., 38 119991 Moscow Russia 2: Air Force Research Laboratory, 3550 Aberdeen Avenue SE Kirtland AFB NM87117 USA; Source Info: Sep2011, Vol. 104 Issue 4, p845; Subject Term: SEMICONDUCTOR doping; Subject Term: OPTICAL fibers; Subject Term: LASER beams; Subject Term: ELECTRONIC excitation; Subject Term: FLUORESCENCE spectroscopy; Subject Term: WAVELENGTHS; Subject Term: OPTICAL pumping; Subject Term: STARK effect; NAICS/Industry Codes: 327214 Glass manufacturing; Number of Pages: 6p; Illustrations: 1 Diagram, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1007/s00340-011-4526-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65322778&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gvozdovskyy, I. AU - Shcherbin, K. AU - Evans, D. AU - Cook, G. T1 - Infrared sensitive liquid crystal photorefractive hybrid cell with semiconductor substrates. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2011/09/15/ VL - 104 IS - 4 M3 - Article SP - 883 EP - 886 PB - Springer Science & Business Media B.V. SN - 09462171 AB - Refractive index grating recording is achieved in the infrared in a nematic liquid crystal placed between semiconductor CdTe substrates. Light-induced space-charge field created in photorefractive semiconductor substrates varies an alignment of liquid crystal molecules inhomogeneously in space forming a spatial modulation of the refractive index in liquid crystal. Two-beam coupling is studied in the hybrid cell, in which a gain factor Γ=16 cm is achieved in the layer of liquid crystal of the sandwich. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFRARED radiation KW - LIQUID crystals KW - PHOTOREFRACTIVE materials KW - SEMICONDUCTORS KW - SUBSTRATES (Materials science) KW - DIFFRACTION gratings KW - BEAM optics N1 - Accession Number: 65322793; Gvozdovskyy, I. 1 Shcherbin, K. 1; Email Address: kshcherb@iop.kiev.ua Evans, D. 2 Cook, G.; Affiliation: 1: Institute of Physics, National Academy of Sciences, Prospekt Nauki 46 03028 Kiev Ukraine 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base 45433 USA; Source Info: Sep2011, Vol. 104 Issue 4, p883; Subject Term: INFRARED radiation; Subject Term: LIQUID crystals; Subject Term: PHOTOREFRACTIVE materials; Subject Term: SEMICONDUCTORS; Subject Term: SUBSTRATES (Materials science); Subject Term: DIFFRACTION gratings; Subject Term: BEAM optics; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 4p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1007/s00340-011-4374-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65322793&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lilly, T. T1 - Simulated nonresonant pulsed laser manipulation of a nitrogen flow. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2011/09/15/ VL - 104 IS - 4 M3 - Article SP - 961 EP - 968 PB - Springer Science & Business Media B.V. SN - 09462171 AB - The continuing advance of laser technology enables a range of broadly applicable, laser-based flow manipulation techniques relevant to a number of aerospace, basic physics, and microtechnology applications. Theories for laser-molecule interactions have been under development since the advent of laser technology. Yet, the theories have not been adequately integrated into kinetic flow solvers. Realizing this integration would greatly enhance the scaling of laser-species interactions beyond the realm of ultra-cold atomic physics. This goal was realized in the present study. A representative numerical investigation of laser-based neutral nonpolar molecular flow manipulations was conducted using non-resonant pulsed laser fields. The numerical tool employed for this study was a specifically modified version of the Direct Simulation Monte Carlo statistical kinetic solver known as SMILE. Flow steering and collimation was simulated for a nitrogen effluence with a stagnation condition of 1 Pa and 300 K emptying into vacuum. The laser pulses were 250 mJ, 5 ns pulses at a wavelength of 532 nm. Flow modification mapped out contours which followed the intensity gradient of the laser field, consistent with the use of the induced dipole gradient force along the field's radial direction and previously published experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIMULATION methods & models KW - PULSED laser deposition KW - NITROGEN KW - AEROSPACE engineering KW - MICROTECHNOLOGY KW - NUMERICAL analysis KW - MONTE Carlo method KW - STATISTICAL physics KW - STAGNATION point N1 - Accession Number: 65322791; Lilly, T. 1; Email Address: taylor.lilly@hotmail.com; Affiliation: 1: Propulsion Directorate (AFRL/RZSA), Air Force Research Laboratory, Edwards AFB, Edwards 93524 USA; Source Info: Sep2011, Vol. 104 Issue 4, p961; Subject Term: SIMULATION methods & models; Subject Term: PULSED laser deposition; Subject Term: NITROGEN; Subject Term: AEROSPACE engineering; Subject Term: MICROTECHNOLOGY; Subject Term: NUMERICAL analysis; Subject Term: MONTE Carlo method; Subject Term: STATISTICAL physics; Subject Term: STAGNATION point; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 8p; Illustrations: 1 Diagram, 11 Graphs; Document Type: Article L3 - 10.1007/s00340-011-4412-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65322791&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rincón, Rosalba A. AU - Lau, Carolin AU - Luckarift, Heather R. AU - Garcia, Kristen E. AU - Adkins, Emily AU - Johnson, Glenn R. AU - Atanassov, Plamen T1 - Enzymatic fuel cells: Integrating flow-through anode and air-breathing cathode into a membrane-less biofuel cell design JO - Biosensors & Bioelectronics JF - Biosensors & Bioelectronics Y1 - 2011/09/15/ VL - 27 IS - 1 M3 - Article SP - 132 EP - 136 SN - 09565663 AB - Abstract: One of the key goals of enzymatic biofuel cells research has been the development of a fully enzymatic biofuel cell that operates under a continuous flow-through regime. Here, we present our work on achieving this task. Two NAD+-dependent dehydrogenase enzymes; malate dehydrogenase (MDH) and alcohol dehydrogenase (ADH) were independently coupled with poly-methylene green (poly-MG) catalyst for biofuel cell anode fabrication. A fungal laccase that catalyzes oxygen reduction via direct electron transfer (DET) was used as an air-breathing cathode. This completes a fully enzymatic biofuel cell that operates in a flow-through mode of fuel supply polarized against an air-breathing bio-cathode. The combined, enzymatic, MDH-laccase biofuel cell operated with an open circuit voltage (OCV) of 0.584V, whereas the ADH-laccase biofuel cell sustained an OCV of 0.618V. Maximum volumetric power densities approaching 20μWcm−3 are reported, and characterization criteria that will aid in future optimization are discussed. [Copyright &y& Elsevier] AB - Copyright of Biosensors & Bioelectronics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUEL cells KW - POLYMETHYLENE KW - MALATE dehydrogenase KW - BIOMASS energy KW - ALCOHOL dehydrogenase KW - CATHODES KW - Air-breathing cathode KW - Biofuel cell KW - Flow-through KW - Membrane-less KW - NAD+-dependent enzyme KW - Poly-methylene green N1 - Accession Number: 63980243; Rincón, Rosalba A. 1 Lau, Carolin 1 Luckarift, Heather R. 2,3 Garcia, Kristen E. 1 Adkins, Emily 1 Johnson, Glenn R. 2 Atanassov, Plamen 1; Email Address: plamen@unm.edu; Affiliation: 1: Department of Chemical & Nuclear Engineering, Center for Emerging Energy Technologies, University of New Mexico, Albuquerque, NM 87131, USA 2: Microbiology and Applied Biochemistry (AFRL/RXQL), Air Force Research Laboratory, 139 Barnes Drive, Suite #2, Tyndall Air Force Base, FL 32403, USA 3: Universal Technology Corporation, 1270 North Fairfield Drive, Dayton, OH 45432, USA; Source Info: Sep2011, Vol. 27 Issue 1, p132; Subject Term: FUEL cells; Subject Term: POLYMETHYLENE; Subject Term: MALATE dehydrogenase; Subject Term: BIOMASS energy; Subject Term: ALCOHOL dehydrogenase; Subject Term: CATHODES; Author-Supplied Keyword: Air-breathing cathode; Author-Supplied Keyword: Biofuel cell; Author-Supplied Keyword: Flow-through; Author-Supplied Keyword: Membrane-less; Author-Supplied Keyword: NAD+-dependent enzyme; Author-Supplied Keyword: Poly-methylene green; NAICS/Industry Codes: 221119 Other electric power generation; NAICS/Industry Codes: 221117 Biomass Electric Power Generation; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.bios.2011.06.029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=63980243&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wu, Yue AU - Zhang, Zhili AU - Adams, Steven F. T1 - O2 rotational temperature measurements by coherent microwave scattering from REMPI JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2011/09/15/ VL - 513 IS - 4-6 M3 - Article SP - 191 EP - 194 SN - 00092614 AB - Abstract: This Letter reports non-intrusive local rotational temperature measurements of molecular oxygen, based on coherent microwave scattering (Radar) from Resonance Enhanced Multi-Photon Ionization (REMPI) in air and in pure oxygen with subsequent analysis of the rotational state distribution. Rotationally resolved 2+1 REMPI spectra of molecular oxygen (C3Π (v =2)←X3Σ (v′=0)) at different temperatures have been obtained by Radar REMPI. Rotational temperatures have been determined from the Boltzmann plots of various experiments. The overall measurements have an accuracy of ∼60°C in the pure oxygen and ∼50°C in the room air, with experiments conducted up to 500°C. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TEMPERATURE measurements KW - MICROWAVES KW - OXYGEN KW - SCATTERING (Physics) KW - IONIZATION (Atomic physics) N1 - Accession Number: 65229386; Wu, Yue 1 Zhang, Zhili 1; Email Address: zzhang24@utk.edu Adams, Steven F. 2; Affiliation: 1: Mechanical, Aerospace and Biomedical Engineering, University of Tennessee Knoxville, TN 37996, USA 2: Air Force Research Laboratory (AFRL/RZPE), Wright-Patterson AFB, OH 45433-7919, USA; Source Info: Sep2011, Vol. 513 Issue 4-6, p191; Subject Term: TEMPERATURE measurements; Subject Term: MICROWAVES; Subject Term: OXYGEN; Subject Term: SCATTERING (Physics); Subject Term: IONIZATION (Atomic physics); NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.cplett.2011.07.092 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65229386&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Posgai, Ryan AU - Cipolla-McCulloch, Caitlin B. AU - Murphy, Kyle R. AU - Hussain, Saber M. AU - Rowe, John J. AU - Nielsen, Mark G. T1 - Differential toxicity of silver and titanium dioxide nanoparticles on Drosophila melanogaster development, reproductive effort, and viability: Size, coatings and antioxidants matter JO - Chemosphere JF - Chemosphere Y1 - 2011/09/15/ VL - 85 IS - 1 M3 - Article SP - 34 EP - 42 SN - 00456535 AB - Abstract: Silver and titanium dioxide nanoparticles are known to induce oxidative stress in vitro and in vivo. Here we test if they impact development, mating success, and survivorship in Drosophila melanogaster, and if so, if these effects are reversible by antioxidants. Ingestion of nanotitanium dioxide during the larval stage of the life cycle showed no effects on development or survivorship, up to doses of 200μgmL−1. Conversely, ingestion of nanosilver had major dose, size, and coating-dependent effects on each of these aspects of life history. Each of these effects was partially or fully reversible by vitamin C. Larvae growing on nanosilver supplemented with vitamin C showed a greater than twofold increase in survivorship compared to flies reared on nanosilver alone, and a threefold increase in mating success. Vitamin C also rescued cuticular and pigmentation defects in nanosilver fed flies. Biochemical assays of superoxide dismutase and glutathione show these markers respond to nanotitanium dioxide and nanosilver induced oxidative stress, and this response is reduced by vitamin C. These results indicate that life history effects of nanosilver ingestion result from oxidative stress, and suggest antioxidants as a potential remediation for nanosilver toxicity. Conversely, the lack of nanotitanium dioxide life history toxicity shows that oxidative stress does not necessarily result in whole organism effects, and argues that nanoparticle toxicity needs to be examined at different levels of biological organization. [Copyright &y& Elsevier] AB - Copyright of Chemosphere is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Toxicology KW - COLLOIDAL silver KW - TITANIUM dioxide KW - DROSOPHILA melanogaster KW - METAL coating KW - ANTIOXIDANTS KW - VITAMIN C KW - OXIDATIVE stress KW - Drosophila KW - Nanoparticle coating KW - Oxidative stress KW - Silver nanoparticles KW - Titanium dioxide nanoparticles KW - Vitamin C N1 - Accession Number: 64714151; Posgai, Ryan 1 Cipolla-McCulloch, Caitlin B. 1 Murphy, Kyle R. 1 Hussain, Saber M. 2 Rowe, John J. 1 Nielsen, Mark G. 1; Email Address: Mark.Nielsen@notes.udayton.edu; Affiliation: 1: Department of Biology, Center for Tissue Regeneration and Engineering, University of Dayton, Dayton, OH 45469, USA 2: Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force Research Laboratory, Wright–Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: Sep2011, Vol. 85 Issue 1, p34; Subject Term: METALS -- Toxicology; Subject Term: COLLOIDAL silver; Subject Term: TITANIUM dioxide; Subject Term: DROSOPHILA melanogaster; Subject Term: METAL coating; Subject Term: ANTIOXIDANTS; Subject Term: VITAMIN C; Subject Term: OXIDATIVE stress; Author-Supplied Keyword: Drosophila; Author-Supplied Keyword: Nanoparticle coating; Author-Supplied Keyword: Oxidative stress; Author-Supplied Keyword: Silver nanoparticles; Author-Supplied Keyword: Titanium dioxide nanoparticles; Author-Supplied Keyword: Vitamin C; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325411 Medicinal and Botanical Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.chemosphere.2011.06.040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=64714151&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Viggiano, Albert A. AU - Troe, Jürgen T1 - Electron attachment to POCl3. II. Dependence of the attachment rate coefficients on gas and electron temperature JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2011/09/15/ VL - 306 IS - 2/3 M3 - Article SP - 123 EP - 128 SN - 13873806 AB - Abstract: Rate coefficients for attachment of electrons to POCl3 have been measured in two FALP (flowing-afterglow Langmuir-probe) apparatuses, extending the temperature range of earlier experiments. The results for equal gas and electron temperatures are compared with data for independently varied temperatures. An analysis of the rate coefficients in terms of electron-polar target capture theory leads to empirical electron–phonon coupling factors which are markedly smaller than unity. These factors depend on the electron energy but do not seem to depend on the gas temperature, which is in contrast to observations made for the electron attachment to SF6. Besides s-wave attachment, contributions from higher partial waves are analyzed and suggested to contribute to some extent. Attachment cross sections and specific rate constants for electron autodetachment are finally constructed in a way which is consistent with the experimental attachment rate coefficients. Autodetachment is shown to be negligible compared to dissociation of POCl3− which is analyzed in a subsequent publication. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOSPHORUS compounds KW - ELECTRON temperature KW - ELECTRON energy loss spectroscopy KW - AFTERGLOW (Physics) KW - COAL gas KW - SHEAR waves KW - ELECTRON-phonon interactions KW - Electron attachment N1 - Accession Number: 65230973; Shuman, Nicholas S. 1 Miller, Thomas M. 1 Viggiano, Albert A. 1; Email Address: afrl.rvb.pa@hanscom.af.mil Troe, Jürgen 2,3; Email Address: shoff@gwdg.de; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Bedford, MA 01731-3010, USA 2: Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany 3: Max-Planck-Institut für biophysikalische Chemie, Am Fassberg 11, D-37077 Göttingen, Germany; Source Info: Sep2011, Vol. 306 Issue 2/3, p123; Subject Term: PHOSPHORUS compounds; Subject Term: ELECTRON temperature; Subject Term: ELECTRON energy loss spectroscopy; Subject Term: AFTERGLOW (Physics); Subject Term: COAL gas; Subject Term: SHEAR waves; Subject Term: ELECTRON-phonon interactions; Author-Supplied Keyword: Electron attachment; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.ijms.2010.09.026 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65230973&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Konkova, T. AU - Mironov, S. AU - Korznikov, A. AU - Semiatin, S.L. T1 - On the room-temperature annealing of cryogenically rolled copper JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2011/09/15/ VL - 528 IS - 24 M3 - Article SP - 7432 EP - 7443 SN - 09215093 AB - Abstract: The electron-backscatter-diffraction (EBSD) technique was applied to investigate room-temperature annealing processes in cryogenically rolled copper during long-term (∼1.5 years) storage at ambient temperature. Static recrystallization appeared to be nucleated as result of both grain-boundary bulging and recovery. A bimodal recrystallized grain size distribution appeared to be a result of these two competing mechanisms. The ultra-fine grain copper produced via cryogenic deformation was deduced to be prone to abnormal grain growth after long static storage at room-temperature. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COPPER KW - ANNEALING of metals KW - LOW temperature engineering KW - ELECTRONS -- Backscattering KW - OPTICAL diffraction KW - RECRYSTALLIZATION (Metallurgy) KW - CRYSTAL grain boundaries KW - IRON alloys KW - EBSD KW - Non-ferrous alloys KW - Recrystallization KW - Thermomechanical processing N1 - Accession Number: 63188531; Konkova, T. 1 Mironov, S. 1,2; Email Address: S-72@mail.ru Korznikov, A. 1 Semiatin, S.L. 3; Affiliation: 1: Institute for Metals Superplasticity Problems, Russian Academy of Science, 39 Khalturin Str., Ufa, 450001, Russia 2: Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Sendai, 980-8579, Japan 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLM, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Sep2011, Vol. 528 Issue 24, p7432; Subject Term: COPPER; Subject Term: ANNEALING of metals; Subject Term: LOW temperature engineering; Subject Term: ELECTRONS -- Backscattering; Subject Term: OPTICAL diffraction; Subject Term: RECRYSTALLIZATION (Metallurgy); Subject Term: CRYSTAL grain boundaries; Subject Term: IRON alloys; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: Non-ferrous alloys; Author-Supplied Keyword: Recrystallization; Author-Supplied Keyword: Thermomechanical processing; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 423510 Metal Service Centers and Other Metal Merchant Wholesalers; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.msea.2011.06.047 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=63188531&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Viswanathan, G.B. AU - Banerjee, R. AU - Singh, A. AU - Nag, S. AU - Tiley, J. AU - Fraser, H.L. T1 - Precipitation of ordered phases in metallic solid solutions: A synergistic clustering and ordering process JO - Scripta Materialia JF - Scripta Materialia Y1 - 2011/09/15/ VL - 65 IS - 6 M3 - Article SP - 485 EP - 488 SN - 13596462 AB - The precipitation mechanism of ordered phases in metallic solid solutions has been a long-standing controversy due to the competing roles of chemical clustering (or phase separation) and chemical ordering. In the present study, this controversy has been resolved through the coupled use of aberration-corrected high-resolution scanning transmission electron microscopy and atom probe tomography. The experimental results, obtained at atomic resolution, can only be interpreted satisfactorily on the basis of phase separation via spinodal decomposition followed by chemical ordering. [ABSTRACT FROM AUTHOR] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLID solutions KW - PHASE separation method (Engineering) KW - NICKEL alloys KW - SCANNING transmission electron microscopy KW - DECOMPOSITION (Chemistry) KW - AMMONIUM paratungstate KW - APT KW - HRSTEM KW - Nickel-base superalloy KW - Spinodal decomposition N1 - Accession Number: 63223671; Viswanathan, G.B. 1; Email Address: gopal.viswanathan@wpafb.af.mil Banerjee, R. 2 Singh, A. 2 Nag, S. 2 Tiley, J. 1 Fraser, H.L. 3; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH 45309, USA 2: Center for Advanced Research and Technology, Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203, USA 3: Center for the Accelerated Maturation of Materials, Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA; Source Info: Sep2011, Vol. 65 Issue 6, p485; Subject Term: SOLID solutions; Subject Term: PHASE separation method (Engineering); Subject Term: NICKEL alloys; Subject Term: SCANNING transmission electron microscopy; Subject Term: DECOMPOSITION (Chemistry); Subject Term: AMMONIUM paratungstate; Author-Supplied Keyword: APT; Author-Supplied Keyword: HRSTEM; Author-Supplied Keyword: Nickel-base superalloy; Author-Supplied Keyword: Spinodal decomposition; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2011.06.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=63223671&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brockman, Robert A. AU - Pilchak, Adam L. AU - John Porter, W. AU - John, Reji T1 - Estimation of grain boundary diffusivity in near-α titanium polycrystals JO - Scripta Materialia JF - Scripta Materialia Y1 - 2011/09/15/ VL - 65 IS - 6 M3 - Article SP - 513 EP - 515 SN - 13596462 AB - The role of enhanced grain boundary diffusivity in high-temperature diffusion of interstitial elements through metals is widely recognized but poorly characterized in most materials. This paper summarizes an effort to estimate grain boundary diffusivity of oxygen in a near-α titanium alloy, Ti–6Al–2Sn–4Zr–2Mo–0.1Si, by explicitly incorporating microstructure obtained from electron backscatter diffraction into an analytical model. Attention is focused on near-surface diffusion behavior contributing to the rapid ingress of oxygen and possible crack initiation in high-temperature environments. [ABSTRACT FROM AUTHOR] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - KIRKENDALL effect KW - TITANIUM alloys KW - ESTIMATION theory KW - POLYCRYSTALS KW - HIGH temperatures KW - OXYGEN KW - ELECTRONS -- Backscattering KW - MICROMECHANICS KW - Electron backscattering KW - Grain boundary diffusion KW - Micromechanical modeling KW - Oxidation N1 - Accession Number: 63223667; Brockman, Robert A. 1,2; Email Address: Robert.Brockman@udri.udayton.edu Pilchak, Adam L. 1 John Porter, W. 2 John, Reji 1; Affiliation: 1: US Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLM, Wright-Patterson Air Force Base, OH, USA 2: University of Dayton Research Institute, Dayton, OH, USA; Source Info: Sep2011, Vol. 65 Issue 6, p513; Subject Term: KIRKENDALL effect; Subject Term: TITANIUM alloys; Subject Term: ESTIMATION theory; Subject Term: POLYCRYSTALS; Subject Term: HIGH temperatures; Subject Term: OXYGEN; Subject Term: ELECTRONS -- Backscattering; Subject Term: MICROMECHANICS; Author-Supplied Keyword: Electron backscattering; Author-Supplied Keyword: Grain boundary diffusion; Author-Supplied Keyword: Micromechanical modeling; Author-Supplied Keyword: Oxidation; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.scriptamat.2011.06.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=63223667&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Jonghoon AU - Varshney, Vikas AU - Roy, Ajit K. AU - Farmer, Barry L. T1 - Single mode phonon energy transmission in functionalized carbon nanotubes. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2011/09/14/ VL - 135 IS - 10 M3 - Article SP - 104109 PB - American Institute of Physics SN - 00219606 AB - Although the carbon nanotube (CNT) features superior thermal properties in its pristine form, the chemical functionalization often required for many applications of CNT inevitably degrades the structural integrity and affects the transport of energy carriers. In this article, the effect of the side wall functionalization on the phonon energy transmission along the symmetry axis of CNT is studied using the phonon wave packet method. Three different functional groups are studied: methyl (-CH3), vinyl (-C2H3), and carboxyl (-COOH). We find that, near Γ point of the Brillouin zone, acoustic phonons show ideal transmission, while the transmission of the optical phonons is strongly suppressed. A positive correlation between the energy transmission coefficient and the phonon group velocity is observed for both acoustic and optical phonon modes. On comparing the transmission due to functional groups with equivalent point mass defects on CNT, we find that the chemistry of the functional group, rather than its molecular mass, has a dominant role in determining phonon scattering, hence the transmission, at the defect sites. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - PHONONS -- Scattering KW - ENERGY transfer KW - THERMAL properties KW - WAVE packets KW - FUNCTIONAL groups KW - SYMMETRY (Physics) N1 - Accession Number: 65431070; Lee, Jonghoon 1,2 Varshney, Vikas 1,2 Roy, Ajit K. 1 Farmer, Barry L. 3; Affiliation: 1: Thermal Sciences and Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, 2: Universal Technology Corporation, 1270 N. Fairfield Rd., Dayton, Ohio 45432, 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433,; Source Info: 9/14/2011, Vol. 135 Issue 10, p104109; Subject Term: CARBON nanotubes; Subject Term: PHONONS -- Scattering; Subject Term: ENERGY transfer; Subject Term: THERMAL properties; Subject Term: WAVE packets; Subject Term: FUNCTIONAL groups; Subject Term: SYMMETRY (Physics); Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.3633514 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65431070&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Prince, Benjamin D. AU - Chiu, Yu-Hui T1 - Luminescence measurements of Xe+ + N2 and Xe2+ + N2 hyperthermal charge transfer collisions. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2011/09/14/ VL - 135 IS - 10 M3 - Article SP - 104308 PB - American Institute of Physics SN - 00219606 AB - Luminescence spectra are recorded for collisions between Xe+/Xe2+ and molecular nitrogen at energies ranging from 4.5 to 316 eV in the center-of-mass frame. In the Xe+ + N2 collision system, evidence for luminescent charge-transfer products is only found through Xe I emission lines. The most intense features of the luminescence spectra are attributed to atomic N emissions observed above ∼20 eV. Intense N2+ A 2Πu - X 2Σg+ and B 2Σu+ - X 2Σg+ radiance is observed from Xe2+ + N2 collisions. The B state formation cross section decreases with collision energy until 20 eV, after which it becomes independent of impact energy with an approximate value of 3 Å2. The cross section for N2+ A (v > 0) formation increases with energy until 20 eV, after which it remains nearly constant at ∼1 Å2. The N2+ product vibrational distributions extracted from the spectra are non-Franck-Condon for both electronic product states at low collision energies. The distributions resemble a Franck-Condon distribution at the highest energies investigated in this work. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - XENON KW - CHARGE transfer KW - NITROGEN KW - COLLISIONS (Physics) KW - LUMINESCENCE spectroscopy KW - VIBRATION (Mechanics) KW - QUANTUM chemistry N1 - Accession Number: 65431069; Prince, Benjamin D. 1 Chiu, Yu-Hui 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorates, Hanscom AFB, Massachusetts 01731,; Source Info: 9/14/2011, Vol. 135 Issue 10, p104308; Subject Term: XENON; Subject Term: CHARGE transfer; Subject Term: NITROGEN; Subject Term: COLLISIONS (Physics); Subject Term: LUMINESCENCE spectroscopy; Subject Term: VIBRATION (Mechanics); Subject Term: QUANTUM chemistry; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1063/1.3629453 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65431069&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Christopher A. Vaiana AU - Mary K. Leonard AU - Lawrence F. Drummy AU - Kristi M. Singh AU - Athanasios Bubulya AU - Richard A. Vaia AU - Rajesh R. Naik AU - Madhavi P. Kadakia T1 - Epidermal Growth Factor: Layered Silicate Nanocomposites for Tissue Regeneration. JO - Biomacromolecules JF - Biomacromolecules Y1 - 2011/09/12/ VL - 12 IS - 9 M3 - Article SP - 3139 EP - 3146 SN - 15257797 AB - Wound healing is a complex, multistep process that can be summarized into three stages, namely, hemostasis and inflammation, proliferation, and finally, tissue remodeling. Battlefield wound healing demands rapid hemostasis using clotting or cauterizing agents to immediately limit blood loss, but this occurs at the expense of proper tissue repair beyond hemostasis. Layered silicate clays such as kaolin and montmorillonite (MMT) have been previously shown to induce blood clotting due to their ability to form charged interactions with clotting factors. The charge characteristics of sodium MMT (Na-MMT) also enable functionalization with active biomolecules. Herein we functionalized Na-MMT with epidermal growth factor (EGF) via ion exchange reaction to create a nanocomposite (MMT-EGF) with approximately 0.004 EGF molecules per Na笗Ⅺ砞 site and conduct biochemical analyses of keratinocytes after treatment with MMT-EGF. Our results demonstrate that EGF immobilized on MMT retains the ability to activate the epidermal growth factor receptor (EGRF), causing phosphorylation of the AKT and MEK1 pathways, as well as upregulation of its downstream target gene expression involved in cell growth and migration. This study also shows that like EGF, MMT-EGF treatment can stimulate cell migration in vitro, which is dependent on ERK1/2 phosphorylation. [ABSTRACT FROM AUTHOR] AB - Copyright of Biomacromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPIDERMAL growth factor KW - LAYER structure (Solids) KW - SILICATES KW - NANOCOMPOSITE materials KW - REGENERATION (Biology) KW - TISSUE engineering KW - MONTMORILLONITE KW - ELECTRIC charge & distribution KW - GENE expression N1 - Accession Number: 65430966; Christopher A. Vaiana 1 Mary K. Leonard 1 Lawrence F. Drummy 1 Kristi M. Singh 1 Athanasios Bubulya 1 Richard A. Vaia 1 Rajesh R. Naik 1 Madhavi P. Kadakia 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, United States; Source Info: Sep2011, Vol. 12 Issue 9, p3139; Subject Term: EPIDERMAL growth factor; Subject Term: LAYER structure (Solids); Subject Term: SILICATES; Subject Term: NANOCOMPOSITE materials; Subject Term: REGENERATION (Biology); Subject Term: TISSUE engineering; Subject Term: MONTMORILLONITE; Subject Term: ELECTRIC charge & distribution; Subject Term: GENE expression; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65430966&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Muñoz, J. A. AU - Lucas, M. S. AU - Delaire, O. AU - Winterrose, M. L. AU - Mauger, L. AU - Li, Chen W. AU - Sheets, A. O. AU - Stone, M. B. AU - Abernathy, D. L. AU - Xiao, Yuming AU - Chow, Paul AU - Fultz, B. T1 - Positive Vibrational Entropy of Chemical Ordering in FeV. JO - Physical Review Letters JF - Physical Review Letters Y1 - 2011/09/09/ VL - 107 IS - 11 M3 - Article SP - 115501.1 EP - 115501.4 SN - 00319007 AB - Inelastic neutron scattering and nuclear resonant inelastic x-ray scattering were used to measure phonon spectra of FeV as a B2 ordered compound and as a bcc solid solution. The two data sets were combined to give an accurate phonon density of states, and the phonon partial densities of states for V and Fe atoms. Contrary to the behavior of ordering alloys studied to date, the phonons in the B2 ordered phase are softer than in the solid solution. Ordering increases the vibrational entropy by +0.22±0.03kB/atom, which stabilizes the ordered phase to higher temperatures. First-principles calculations show that the number of electronic states at the Fermi level increases upon ordering, enhancing the screening between ions, and reducing the interatomic force constants. The effect of screening is larger at the V atomic sites than at the Fe atomic sites. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review Letters is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENTROPY KW - INELASTIC scattering KW - X-ray scattering KW - PHONONS KW - SOLID solutions KW - VANADIUM -- Spectra KW - IRON -- Spectra KW - SPECTRA N1 - Accession Number: 67304561; Muñoz, J. A. 1 Lucas, M. S. 2,3 Delaire, O. 2 Winterrose, M. L. 1 Mauger, L. 1 Li, Chen W. 1 Sheets, A. O. 3 Stone, M. B. 2 Abernathy, D. L. 2 Xiao, Yuming 4 Chow, Paul 4 Fultz, B. 1; Affiliation: 1: California Institute of Technology, W. M. Keck Laboratory 138-78, Pasadena, California 91125, USA 2: Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, Tennessee 37831, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 4: HPCAT, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, Illinois 60439, USA; Source Info: 9/9/2011, Vol. 107 Issue 11, p115501.1; Subject Term: ENTROPY; Subject Term: INELASTIC scattering; Subject Term: X-ray scattering; Subject Term: PHONONS; Subject Term: SOLID solutions; Subject Term: VANADIUM -- Spectra; Subject Term: IRON -- Spectra; Subject Term: SPECTRA; Number of Pages: 4p; Document Type: Article L3 - 10.1103/PhysRevLett.107.115501 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67304561&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yannian Li AU - Urbas, Augustine AU - Quan Li T1 - Synthesis and Characterization of Light-Driven Dithienylcyclopentene Switches with Axial Chirality. JO - Journal of Organic Chemistry JF - Journal of Organic Chemistry Y1 - 2011/09/02/ VL - 76 IS - 17 M3 - Article SP - 7148 EP - 7156 SN - 00223263 AB - Three new photochemically reversible but thermally stable dithienyicyclopentene switches with axial chirality were synthesized and characterized. All the compounds exhibited photochemically reversible isomerization with thermal stability between its open form and dosed form in both organic solvent and liquid crystal host. Their photoresponsive behaviors in organic solvents were characterized by ¹'H NMR, UV-vis, and CD spectra. These chiral molecular switches were found not only to be able to act as a chiral dopant and induce a helical superstructure in an a chiral liquid crystal host but also to be able to reversibly and dynamically tune the transmittance and reflection of the resulting chiral phase upon light irradiation. The helical twisting powers, transmittance, and reflection spectra of photoswitchable cholesteric LCs were measured. Dopant 1 exhibited an unusually high helical twisting power, which is significantly larger than those of the known chiral diarylethenes reported as chiral dopants so far. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Organic Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHIRALITY KW - ISOMERIZATION KW - ORGANIC solvents KW - LIQUID crystals KW - IRRADIATION N1 - Accession Number: 66236089; Yannian Li 1 Urbas, Augustine 2 Quan Li 1; Email Address: qlil@kent.edu; Affiliation: 1: Liquid Crystal Institute, Kent State University, Kent, Ohio 44242, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory WPAFB, Ohio 45433, United States; Source Info: 9/2/2011, Vol. 76 Issue 17, p7148; Subject Term: CHIRALITY; Subject Term: ISOMERIZATION; Subject Term: ORGANIC solvents; Subject Term: LIQUID crystals; Subject Term: IRRADIATION; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66236089&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cleaver, D. J. AU - Wang, Z. AU - Gursul, I. AU - Visbal, M. R. T1 - Lift Enhancement by Means of Small-Amplitude Airfoil Oscillations at Low Reynolds Numbers. JO - AIAA Journal JF - AIAA Journal Y1 - 2011/09// VL - 49 IS - 9 M3 - Article SP - 2018 EP - 2033 SN - 00011452 AB - Force and particle image velocimetry measurements were conducted on a NACA 0012 airfoil undergoing small-amplitude sinusoidal plunge oscillations at a poststall angle of attack and Reynolds number of 10,000. With increasing frequency of oscillation, lift increases and drag decreases due to the leading-edge vortices shed and convected over the suction surface of the airfoil. Within this regime, the lift coefficient increases approximately linearly with the normalized plunge velocity. Local maxima occur in the lift coefficient due to the resonance with the most unstable wake frequency, its subharmonic and first harmonic, producing the most efficient conditions for high- lift generation. At higher frequencies, a second mode of flowfield occurs. The leading-edge vortex remains nearer the leading edge of the airfoil and loses its coherency through impingement with the upward-moving airfoil. To capture this impingement process, high-fidelity computational simulations were performed that showed the highly transitional nature of the flow and a strong interaction between the upper and lower-surface vortices. A sudden loss of lift may also occur at high frequencies for larger amplitudes in this mode. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLE image velocimetry KW - AEROFOILS KW - OSCILLATIONS KW - REYNOLDS number KW - TAYLOR vortices N1 - Accession Number: 65486330; Cleaver, D. J. 1 Wang, Z. 1 Gursul, I. 1 Visbal, M. R. 2; Affiliation: 1: University of Bath, Bath, England BA2 7AY, United Kingdom 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Sep2011, Vol. 49 Issue 9, p2018; Subject Term: PARTICLE image velocimetry; Subject Term: AEROFOILS; Subject Term: OSCILLATIONS; Subject Term: REYNOLDS number; Subject Term: TAYLOR vortices; Number of Pages: 16p; Document Type: Article L3 - 10.2514/I.J051014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65486330&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Richardson, D. AU - Lucht, R. AU - Kulatilaka, W. AU - Roy, S. AU - Gord, J. T1 - Theoretical modeling of single-laser-shot, chirped-probe-pulse femtosecond coherent anti-Stokes Raman scattering thermometry. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2011/09// VL - 104 IS - 3 M3 - Article SP - 699 EP - 714 PB - Springer Science & Business Media B.V. SN - 09462171 AB - Chirped-probe-pulse (CPP) femtosecond (fs) coherent anti-Stokes Raman scattering (CARS) spectroscopy for single-laser-shot temperature measurements in flames is discussed. In CPP fs CARS, a giant Raman coherence is created in the medium by impulsive pump-Stokes excitation, and the temperature-dependent temporal decay of this initial coherence is mapped into the frequency of the CARS signal using a CPP. The theory of the CPP fs CARS technique is presented. A computer code has been developed to calculate theoretical CPP fs CARS spectra. The input parameters for the calculation of the theoretical spectra include the temperature, probe time delay, ratio of the resonant and nonresonant susceptibilities, and parameters for characterizing the pump, Stokes and probe pulses. The parameters for characterizing the pump, Stokes and probe pulses are determined from the best fit of theoretical spectra to experimental spectra acquired from calibration flames at a known temperature. For spectra acquired in subsequent measurements, these laser parameters are fixed and temperature is determined as one of the fit parameters from the best fit of theoretical spectra to experimental spectra. For single-laser-shot CPP fs CARS temperature measurements performed in steady, near-adiabatic flames, the best-fit temperature distribution width is typically less than 1.5% of the mean temperature. The mean temperature is accurate to within approximately 3% with respect to the adiabatic flame temperature. The most significant limitation on temperature measurement accuracy is associated with the evaluation of the theoretical laser parameters. Significant improvements in the temperature measurement accuracy are expected once monitoring equipment capable of characterizing the spectrum and phase of each laser pulse is incorporated in the experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FEMTOSECOND lasers KW - RAMAN effect KW - TEMPERATURE measurements KW - ELECTRONIC excitation KW - FLAME KW - RESONANCE KW - FOURIER transforms N1 - Accession Number: 65082040; Richardson, D. 1 Lucht, R. 1; Email Address: lucht@purdue.edu Kulatilaka, W. 2 Roy, S. 2 Gord, J. 3; Affiliation: 1: School of Mechanical Engineering, Purdue University, West Lafayette 47907 USA 2: Spectral Energies, LLC, 5100 Springfield Street, Suite 301 Dayton 45431 USA 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB 45433 USA; Source Info: Sep2011, Vol. 104 Issue 3, p699; Subject Term: FEMTOSECOND lasers; Subject Term: RAMAN effect; Subject Term: TEMPERATURE measurements; Subject Term: ELECTRONIC excitation; Subject Term: FLAME; Subject Term: RESONANCE; Subject Term: FOURIER transforms; Number of Pages: 16p; Illustrations: 1 Diagram, 1 Chart, 14 Graphs; Document Type: Article L3 - 10.1007/s00340-011-4489-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65082040&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guznov, Svyatoslav AU - Matthews, Gerald AU - Funke, Gregory AU - Dukes, Allen T1 - Use of the RoboFlag synthetic task environment to investigate workload and stress responses in UAV operation. JO - Behavior Research Methods JF - Behavior Research Methods Y1 - 2011/09// VL - 43 IS - 3 M3 - Article SP - 771 EP - 780 SN - 1554351X AB - Use of unmanned aerial vehicles (UAVs) is an increasingly important element of military missions. However, controlling UAVs may impose high stress and workload on the operator. This study evaluated the use of the RoboFlag simulated environment as a means for profiling multiple dimensions of stress and workload response to a task requiring control of multiple vehicles (robots). It tested the effects of two workload manipulations, environmental uncertainty (i.e., UAV's visual view area) and maneuverability, in 64 participants. The findings confirmed that the task produced substantial workload and elevated distress. Dissociations between the stress and performance effects of the manipulations confirmed the utility of a multivariate approach to assessment. Contrary to expectations, distress and some aspects of workload were highest in the low-uncertainty condition, suggesting that overload of information may be an issue for UAV interface designers. The strengths and limitations of RoboFlag as a methodology for investigating stress and workload responses are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Behavior Research Methods is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRESS (Psychology) -- Research KW - EMPLOYEES -- Workload KW - RESEARCH KW - SIMULATION methods & models KW - DRONE aircraft KW - AUTONOMOUS vehicles KW - MULTIVARIATE analysis KW - Computer simulators KW - Stress KW - Workload N1 - Accession Number: 89925312; Guznov, Svyatoslav 1; Email Address: guznovs@mail.uc.edu Matthews, Gerald 1 Funke, Gregory 2 Dukes, Allen 2; Affiliation: 1: Department of Psychology, University of Cincinnati, 5140H Edwards Hall 1 Cincinnati 45221 USA 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton USA; Source Info: Sep2011, Vol. 43 Issue 3, p771; Subject Term: STRESS (Psychology) -- Research; Subject Term: EMPLOYEES -- Workload; Subject Term: RESEARCH; Subject Term: SIMULATION methods & models; Subject Term: DRONE aircraft; Subject Term: AUTONOMOUS vehicles; Subject Term: MULTIVARIATE analysis; Author-Supplied Keyword: Computer simulators; Author-Supplied Keyword: Stress; Author-Supplied Keyword: Workload; Number of Pages: 10p; Document Type: Article L3 - 10.3758/s13428-011-0085-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=89925312&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schmidt, Jacob AU - Kostka, Stanislav AU - Lynch, Amy AU - Ganguly, Biswa T1 - Simultaneous particle image velocimetry and chemiluminescence visualization of millisecond-pulsed current-voltage-induced perturbations of a premixed propane/air flame. JO - Experiments in Fluids JF - Experiments in Fluids Y1 - 2011/09// VL - 51 IS - 3 M3 - Article SP - 657 EP - 665 SN - 07234864 AB - The effects of millisecond-wide, pulsed current-voltage-induced behavior in premixed laminar flames have been investigated through the simultaneous collection of particle image velocimetry (PIV) and chemiluminescence data with particular attention paid to the onset mechanisms. Disturbances caused by applied voltages of 2 kV over a 30-mm gap to a downward propagating, atmospheric pressure, premixed propane/air flame with a flow speed near 2 m/s and an equivalence ratio of 1.06 are investigated. The combined PIV and chemiluminescence-based experimental data show the observed disturbance originates only in or near the cathode fall region very close to the burner base. The data also suggest that the coupling mechanism responsible for the flame disturbance behavior is fluidic in nature, developing from the radial positive chemi-ion distribution and an ion-drift current-induced net body force that acts along the annular space discharge distribution in the reaction zone in or near the cathode fall. This net body force causes a reduction in flow speed above these near cathodic regions causing the base of the flame to laterally spread. Also, this effect seems to produce a velocity gradient leading to the transition of a laminar flame to turbulent combustion for higher applied current-voltage conditions as shown in previous work (Marcum and Ganguly in Combust Flame 143:27-36, ; Schmidt and Ganguly in 48th AIAA aerospace sciences meeting. Orlando, ). [ABSTRACT FROM AUTHOR] AB - Copyright of Experiments in Fluids is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLE image velocimetry KW - CHEMILUMINESCENCE KW - RESEARCH KW - VISUALIZATION KW - CURRENT-voltage characteristics KW - PROPANE N1 - Accession Number: 64894701; Schmidt, Jacob 1; Email Address: JSchmidt@SpectralEnergies.com Kostka, Stanislav 1 Lynch, Amy 2 Ganguly, Biswa 2; Affiliation: 1: Spectral Energies, LLC., 5100 Springfield Street Dayton 45431 USA 2: Air Force Research Laboratory, WPAFB, Dayton 45433 USA; Source Info: Sep2011, Vol. 51 Issue 3, p657; Subject Term: PARTICLE image velocimetry; Subject Term: CHEMILUMINESCENCE; Subject Term: RESEARCH; Subject Term: VISUALIZATION; Subject Term: CURRENT-voltage characteristics; Subject Term: PROPANE; NAICS/Industry Codes: 424710 Petroleum Bulk Stations and Terminals; NAICS/Industry Codes: 454312 Liquefied petroleum gas (bottled gas) dealers; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 9p; Document Type: Article L3 - 10.1007/s00348-011-1078-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=64894701&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baginski, Thomas A. AU - Dean, Robert Neal AU - Wild, Edwin J. T1 - Micromachined Planar Triggered Spark Gap Switch. JO - IEEE Transactions on Components, Packaging & Manufacturing Technology JF - IEEE Transactions on Components, Packaging & Manufacturing Technology Y1 - 2011/09// VL - 1 IS - 9 M3 - Article SP - 1480 EP - 1485 SN - 21563950 AB - High voltage switches capable of operating at high speeds with high current levels are used in a variety of applications in commercial and government systems. This paper discusses the fabrication and characterization of a novel micromachined planar triggered spark gap switch. The switch provides a low cost alternative to conventional triggered spark gap switches. The structure is designed for direct integration into the strip-line geometries used in a conventional capacitive discharge unit. The geometry of the device was selected to minimize parasitic impedances associated with conventional firing circuits. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Components, Packaging & Manufacturing Technology is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROMACHINING KW - ENERGY gaps (Physics) KW - SWITCHING circuits KW - MICROFABRICATION KW - ELECTRIC spark KW - ELECTRIC impedance KW - CAPACITORS KW - ELECTRIC discharges KW - Capacitors KW - Discharges KW - Electrodes KW - Explosives KW - High speed KW - high voltage switch KW - low parasitic impedance KW - low turn-on voltage KW - microelectromechanical systems KW - Sparks KW - Substrates KW - Switches N1 - Accession Number: 69665513; Baginski, Thomas A. 1 Dean, Robert Neal 1 Wild, Edwin J. 2; Affiliation: 1: Department of Electrical and Computer Engineering, Auburn University, Auburn, AL, USA 2: Air Force Research Laboratory, United States Air Force, Eglin AFB, FL, USA; Source Info: Sep2011, Vol. 1 Issue 9, p1480; Subject Term: MICROMACHINING; Subject Term: ENERGY gaps (Physics); Subject Term: SWITCHING circuits; Subject Term: MICROFABRICATION; Subject Term: ELECTRIC spark; Subject Term: ELECTRIC impedance; Subject Term: CAPACITORS; Subject Term: ELECTRIC discharges; Author-Supplied Keyword: Capacitors; Author-Supplied Keyword: Discharges; Author-Supplied Keyword: Electrodes; Author-Supplied Keyword: Explosives; Author-Supplied Keyword: High speed; Author-Supplied Keyword: high voltage switch; Author-Supplied Keyword: low parasitic impedance; Author-Supplied Keyword: low turn-on voltage; Author-Supplied Keyword: microelectromechanical systems; Author-Supplied Keyword: Sparks; Author-Supplied Keyword: Substrates; Author-Supplied Keyword: Switches; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 335313 Switchgear and Switchboard Apparatus Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TCPMT.2011.2142399 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69665513&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - CHABAK, KELSON D. AU - WALKER JR., DENNIS E. AU - CRESPO, ANTONIO AU - TREJO, MANUEL AU - KOSSLER, MAURICIO AU - TETLAK, STEVE AU - GILLESPIE, JAMES K. AU - FITCH, ROBERT C. AU - VIA, GLEN D. AU - DABIRAN, AMIR AU - WOWCHAK, A.M. AU - CHOW, P.P. T1 - SMALL SIGNAL AND DC CHARACTERISTICS OF ULTRA-THIN GaN/AlN/GaN HFETs. JO - International Journal of High Speed Electronics & Systems JF - International Journal of High Speed Electronics & Systems Y1 - 2011/09// VL - 20 IS - 3 M3 - Article SP - 385 EP - 392 PB - World Scientific Publishing Company SN - 01291564 AB - This paper presents high performance device results using an ultra-thin AlN/GaN structure on sapphire substrate with a 100-nm T-gate. Excellent dc and RF characteristics are reported, including an extrinsic transconductance of 500 mS/mm and an extrinsic ft/fmax(U) ratio of 78/111-GHz which is among the highest reported for AlN/GaN HFETs. Low gate leakage results are also presented despite the small barrier thickness and absence of a gate dielectric. Modeling of the small signal parameters is also discussed to gain an understanding of the limiting and contributing performance factors. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of High Speed Electronics & Systems is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - HETEROSTRUCTURES KW - SIGNAL-to-noise ratio KW - ELECTRON mobility KW - POLARIZATION (Electricity) KW - MODULATION-doped field-effect transistors KW - PERFORMANCE evaluation KW - heterostructure field effect transistor KW - high electron mobility transistor KW - III-nitride polarization KW - small signal parameters N1 - Accession Number: 76609244; CHABAK, KELSON D. 1; Email Address: kelson.chabak@wpafb.af.mil WALKER JR., DENNIS E. 1 CRESPO, ANTONIO 1 TREJO, MANUEL 1 KOSSLER, MAURICIO 1 TETLAK, STEVE 1 GILLESPIE, JAMES K. 1 FITCH, ROBERT C. 1 VIA, GLEN D. 1 DABIRAN, AMIR 2; Email Address: adabiran@svta.com WOWCHAK, A.M. 2 CHOW, P.P. 2; Affiliation: 1: Sensors Directorate, US Air Force Research Laboratory, 2241 Avionics Circle, Wright-Patterson AFB, OH 45433, USA 2: SVT Associates, Inc., 7620 Executive Drive, Eden Prairie, MN 55344, USA; Source Info: Sep2011, Vol. 20 Issue 3, p385; Subject Term: GALLIUM nitride; Subject Term: HETEROSTRUCTURES; Subject Term: SIGNAL-to-noise ratio; Subject Term: ELECTRON mobility; Subject Term: POLARIZATION (Electricity); Subject Term: MODULATION-doped field-effect transistors; Subject Term: PERFORMANCE evaluation; Author-Supplied Keyword: heterostructure field effect transistor; Author-Supplied Keyword: high electron mobility transistor; Author-Supplied Keyword: III-nitride polarization; Author-Supplied Keyword: small signal parameters; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76609244&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanford, Bret AU - Miranda, José AU - Parker, Gregory AU - Beran, Philip T1 - The Complicating Effect of Uncertain Flapping Wing Kinematics on Model Validation. JO - International Journal of Micro Air Vehicles JF - International Journal of Micro Air Vehicles Y1 - 2011/09// VL - 3 IS - 3 M3 - Article SP - 143 EP - 148 SN - 17568293 AB - In order to experimentally validate an aeroelastic modeling tool, a flapping mechanism has been built to flap a flexible wing structure about a single axis. A comparison of the flexible tip deformation during the flapping stroke is of particular interest. Due to the small size of fully-scaled mechanisms, the "commanded" kinematics may differ substantially from what is observed. A crucial input into any numerical flapping wing model, the temporal derivatives of the flapping kinematics, is then not known with certainty. For the current work, the flap rotation is measured with a non-contact image correlation technique, and a Fourier series fit is used to obtain flapping velocities and accelerations. The resulting match between experimental and numerical tip displacements is satisfactory for a very small range of harmonic number. A recommended strategy for future numerical modeling efforts is to include the entire flapping system (power source, actuation, wings) into the framework in order to improve the validation process, with less dependence upon experimental data to "tune" the computational model's input kinematics. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Micro Air Vehicles is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLIGHT -- Physiological aspects KW - KINEMATICS KW - RESEARCH KW - WINGS (Anatomy) -- Aerodynamics KW - CORRELATION (Statistics) KW - MATHEMATICAL models N1 - Accession Number: 66696819; Stanford, Bret 1 Miranda, José 1 Parker, Gregory 1 Beran, Philip 1; Affiliation: 1: US Air Force Research Laboratory, Wright Patterson AFB, OH, 45433; Source Info: Sep2011, Vol. 3 Issue 3, p143; Subject Term: FLIGHT -- Physiological aspects; Subject Term: KINEMATICS; Subject Term: RESEARCH; Subject Term: WINGS (Anatomy) -- Aerodynamics; Subject Term: CORRELATION (Statistics); Subject Term: MATHEMATICAL models; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66696819&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ree, Malcolm James AU - Carretta, Thomas R. T1 - The Observation of Incremental Validity Does Not Always Mean Unique Contribution to Prediction. JO - International Journal of Selection & Assessment JF - International Journal of Selection & Assessment Y1 - 2011/09// VL - 19 IS - 3 M3 - Article SP - 276 EP - 279 PB - Wiley-Blackwell SN - 0965075X AB - Statistical analyses require proper interpretation. Misinterpretation leads to a lack of understanding of the relationships among variables. Worse, it can lead to misunderstanding of these relationships, which sometimes lead researchers and practitioners to infer the presence of a source of variance that is not present. This is especially true in regression where increased predictiveness from an additional variable may be due to either common or specific variance. In many instances, erroneous interpretation leads to erroneous attribution of the source of the improved prediction. Three examples are provided and methods for detecting specific variance are suggested. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Selection & Assessment is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STATISTICS KW - QUANTITATIVE research KW - REGRESSION analysis KW - ANALYSIS of variance KW - EQUATIONS N1 - Accession Number: 64905368; Ree, Malcolm James 1; Email Address: mjree@lake.ollusa.edu Carretta, Thomas R. 2; Affiliation: 1: Our Lady of the Lake University, 411 SW 24th Street, San Antonio, TX 78207-4689, USA. 2: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Sep2011, Vol. 19 Issue 3, p276; Subject Term: STATISTICS; Subject Term: QUANTITATIVE research; Subject Term: REGRESSION analysis; Subject Term: ANALYSIS of variance; Subject Term: EQUATIONS; Number of Pages: 4p; Document Type: Article L3 - 10.1111/j.1468-2389.2011.00556.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=64905368&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tondiglia, V. T. AU - Natarajan, L. V. AU - Bailey, C. A. AU - Duning, M. M. AU - Sutherland, R. L. AU - Ke-Yang, Deng AU - Voevodin, A. AU - White, T. J. AU - Bunning, T. J. T1 - Electrically induced bandwidth broadening in polymer stabilized cholesteric liquid crystals. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/09// VL - 110 IS - 5 M3 - Article SP - 053109 PB - American Institute of Physics SN - 00218979 AB - The reflection notch bandwidth of a cholesteric liquid crystal (CLC), equal to the product of the liquid crystal (LC) birefringence (Δn), and the pitch length (po), is typically on the order of 50-100 nm in the visible portion of the electromagnetic spectrum. Static bandwidths greater than 100 nm can be observed in CLCs that possess a pitch gradient throughout the thickness of the cell. In this work, we report on polymer stabilized CLC (PSCLC) systems that exhibit electrically controllable, dynamic bandwidths governed by the strength of a direct current (DC) electric field applied across the sample. Symmetric notch broadening which increases linearly with field and reaches a maximum value at 4 V/μm is observed. Removal of the field returns the PSCLC cell to its original optical properties. A seven fold increase in bandwidth was observed for 22 μm thick cells which contained LCs with a small birefringence (∼0.04). A variety of CLC mixtures with small positive or negative dielectric anisotropies are shown to exhibit this reversible dynamic bandwidth broadening. The magnitude of the effect was dependent on the amount of polymer stabilization controlled by initial monomer content. The underlying mechanism is partially elucidated by examining cells simultaneously in transmission and reflection and observing differences when modulating the DC polarity across the cell. Different mechanisms for the observed effects are discussed in terms of consistency with our experimental results. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - POLYMERS KW - LIGHT sources KW - DOUBLE refraction KW - PHOTONICS N1 - Accession Number: 65458449; Tondiglia, V. T. 1 Natarajan, L. V. 1 Bailey, C. A. 2 Duning, M. M. 2 Sutherland, R. L. 3 Ke-Yang, Deng 4 Voevodin, A. 2 White, T. J. 2 Bunning, T. J. 2; Affiliation: 1: Science Applications International Corporation, 4031 Col Glenn Hwy, Dayton, Ohio 45431, 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio 45433, 3: Mount Vernon Nazarene University, Mount Vernon, Ohio 43050, 4: Chemical Physics Interdisciplinary Program and Liquid Crystal Institute, Kent State University, Kent, Ohio 44242,; Source Info: Sep2011, Vol. 110 Issue 5, p053109; Subject Term: LIQUID crystals; Subject Term: POLYMERS; Subject Term: LIGHT sources; Subject Term: DOUBLE refraction; Subject Term: PHOTONICS; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.3632068 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65458449&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Saraf, Rahul AU - Hoon Joo Lee AU - Michielsen, Stephen AU - Owens, Jeffery AU - Willis, Colin AU - Stone, Corinne AU - Wilusz, Eugene T1 - Comparison of three methods for generating superhydrophobic, superoleophobic nylon nonwoven surfaces. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2011/09// VL - 46 IS - 17 M3 - Article SP - 5751 EP - 5760 PB - Springer Science & Business Media B.V. SN - 00222461 AB - This research deals with creating a superhydrophobic/superoleophobic surface by preparing a metastable Cassie-Baxter (CB) surface. To create a CB surface it is essential to have low surface energy and properly constructed surface morphology. We have explored three different techniques to achieve superhydrophobicity and superoleophobicity using hydroentangled nylon nonwoven fabric: pulsed plasma polymerization of 1H,1H,2H,2H-perfluorodecyl acrylate (PFAC8), microwave-assisted condensation of 1H,1H,2H,2H-perfluorodecyltrimethoxysilane (FS), and FS condensation through wet processing. Nonwoven fabric materials prepared using these three techniques were superhydrophobic and superoleophobic as shown by their very high contact angles for both water (contact angles of 168-174°) and dodecane (contact angles of 153-160°). The measured contact angles agree with the predicted values obtained through designing a CB surface. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NYLON KW - NONWOVEN textiles KW - SURFACES (Technology) KW - SURFACE energy KW - PLASMA polymerization N1 - Accession Number: 61027511; Saraf, Rahul 1 Hoon Joo Lee 1; Email Address: hoonjoo•lee@ncsu.edu Michielsen, Stephen 1 Owens, Jeffery 2 Willis, Colin 3 Stone, Corinne 3 Wilusz, Eugene 4; Affiliation: 1: North Carolina State University, Raleigh 27695 USA 2: Air Force Research Laboratory, Tyndall Air Force Base 32403 USA 3: Defence Science and Technology Laboratory, Salisbury SP4 0JQ UK 4: Army Natick Soldier Research, Development, and Engineering Center, Natick 01760 USA; Source Info: Sep2011, Vol. 46 Issue 17, p5751; Subject Term: NYLON; Subject Term: NONWOVEN textiles; Subject Term: SURFACES (Technology); Subject Term: SURFACE energy; Subject Term: PLASMA polymerization; NAICS/Industry Codes: 313230 Nonwoven Fabric Mills; NAICS/Industry Codes: 313110 Fiber, Yarn, and Thread Mills; Number of Pages: 10p; Illustrations: 8 Color Photographs, 5 Black and White Photographs, 2 Diagrams, 3 Charts; Document Type: Article L3 - 10.1007/s10853-011-5530-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61027511&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alarcon, Gene M. AU - Lyons, Joseph B. T1 - The Relationship of Engagement and Job Satisfaction in Working Samples. JO - Journal of Psychology JF - Journal of Psychology Y1 - 2011/09// VL - 145 IS - 5 M3 - Article SP - 463 EP - 480 PB - Taylor & Francis Ltd SN - 00223980 AB - The present study explored the factor structure of engagement and its relationship with job satisfaction. The authors hypothesize that work engagement comprises 3 constructs: vigor, dedication, and absorption. Using structural equation modeling, the authors analyze data from 3 archival data sets to determine the factor structure of engagement. In addition, they examine the hypothesis that engagement and job satisfaction are separate but related constructs, using structural equation modeling and hierarchical regression. The authors test models in which engagement and job satisfaction items loaded onto a single latent variable and 1 in which they loaded onto 2 separate variables. Results from the confirmatory factor analysis indicate engagement has 3 factors. In addition, confirmatory factor analysis and hierarchical regressions indicate engagement and job satisfaction are separate constructs. Last, hierarchical regressions demonstrated the constructs have different relationships with the areas of work-life scale. Implications for theory and research are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JOB satisfaction KW - TEST validity KW - QUALITY of work life KW - STRUCTURAL equation modeling KW - FACTOR analysis KW - construct validity KW - engagement KW - job satisfaction N1 - Accession Number: 62974646; Alarcon, Gene M. 1 Lyons, Joseph B. 1; Affiliation: 1: Air Force Research Laboratory,; Source Info: Sep2011, Vol. 145 Issue 5, p463; Subject Term: JOB satisfaction; Subject Term: TEST validity; Subject Term: QUALITY of work life; Subject Term: STRUCTURAL equation modeling; Subject Term: FACTOR analysis; Author-Supplied Keyword: construct validity; Author-Supplied Keyword: engagement; Author-Supplied Keyword: job satisfaction; Number of Pages: 18p; Illustrations: 3 Charts; Document Type: Article L3 - 10.1080/00223980.2011.584083 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62974646&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Head, William P. T1 - "GUNSHIPS AND 'DING-BATS': U.S. MILITARY OPERATIONS DURING 'JUST CAUSE'.". JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 2011///Fall2011 VL - 28 IS - 2 M3 - Article SP - 87 EP - 105 PB - Association of Third World Studies SN - 87553449 AB - The article discusses the 1989 U.S. military intervention into Panama known as Operation Just Cause. It provides an overview of U.S. foreign policy in the 1980s, especially in regards to military actions and humanitarian aid, during the administrations of U.S. Presidents Ronald Reagan and George H. W. Bush. An overview of American military policy from 1981 to 1990, including congressional legislation overseeing the organization of special forces from all U.S. Armed Forces groups, is presented. Other topics include a discussion of the regime of Panamanian leader Manuel Noriega, Panama's political stability, anti-American actions in Panama during the 1980s, and Noriega's ties to Colombian drug cartels. KW - HISTORY KW - MILITARY policy KW - POLITICAL stability KW - AMERICAN Invasion, 1989 KW - UNITED States -- Politics & government -- 1945-1989 KW - PANAMA -- Foreign relations -- United States KW - UNITED States KW - PANAMA N1 - Accession Number: 67020731; Head, William P. 1; Email Address: william.head@robins.af.mil; Affiliation: 1: United States Air Force, Area of Specialization: U.S. Military History/US. Foreign Relations with east and Southeast Asia; Source Info: Fall2011, Vol. 28 Issue 2, p87; Subject Term: HISTORY; Subject Term: MILITARY policy; Subject Term: POLITICAL stability; Subject Term: AMERICAN Invasion, 1989; Subject Term: UNITED States -- Politics & government -- 1945-1989; Subject Term: PANAMA -- Foreign relations -- United States; Subject Term: UNITED States; Subject Term: PANAMA; Number of Pages: 19p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67020731&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Singh, A.R.P. AU - Nag, S. AU - Hwang, J.Y. AU - Viswanathan, G.B. AU - Tiley, J. AU - Srinivasan, R. AU - Fraser, H.L. AU - Banerjee, R. T1 - Influence of cooling rate on the development of multiple generations of γ′ precipitates in a commercial nickel base superalloy JO - Materials Characterization JF - Materials Characterization Y1 - 2011/09// VL - 62 IS - 9 M3 - Article SP - 878 EP - 886 SN - 10445803 AB - Abstract: The compositional and microstructural evolution of different generations of γ′ precipitates during the continuous cooling of a commercial nickel base superalloy, Rene88DT, has been characterized by three dimensional atom probe tomography coupled with energy-filtered transmission electron microscopy studies. After solutionizing in the single γ phase field, continuous cooling at a very high rate results in a monomodal size distribution of γ′ precipitates with a high nucleation density and non-equilibrium compositions. In contrast, a relatively slower cooling rate (~24°C/min) results in a multi-modal size distribution of γ′ precipitates with the larger first generation primary precipitates exhibiting close to equilibrium composition, along with the smaller scale secondary γ′ precipitates, exhibiting non-equilibrium composition (excess of Co and Cr, depleted in Al and Ti). The composition of the γ matrix near these precipitates also exhibits similar trends with the composition being closer to equilibrium near the primary precipitates as compared to the secondary precipitates. [Copyright &y& Elsevier] AB - Copyright of Materials Characterization is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL alloys KW - METALS -- Microstructure KW - PRECIPITATION (Chemistry) KW - HEAT resistant alloys KW - COOLING KW - TRANSMISSION electron microscopy KW - NUCLEATION KW - CHEMICAL equilibrium KW - Atom probe tomography KW - Energy-filtered transmission electron microscopy KW - Gamma prime KW - Nickel base superalloy N1 - Accession Number: 64851742; Singh, A.R.P. 1 Nag, S. 1; Email Address: nag.soumya@gmail.com Hwang, J.Y. 1 Viswanathan, G.B. 2 Tiley, J. 2 Srinivasan, R. 3 Fraser, H.L. 4 Banerjee, R. 1; Affiliation: 1: Center for Advanced Research and Technology and Department of Materials Science and Engineering, University of North Texas, Denton, TX, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH, USA 3: ExxonMobil Research and Engineering Company, Annandale, NJ, USA 4: Center for the Accelerated Maturation of Materials and Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, USA; Source Info: Sep2011, Vol. 62 Issue 9, p878; Subject Term: NICKEL alloys; Subject Term: METALS -- Microstructure; Subject Term: PRECIPITATION (Chemistry); Subject Term: HEAT resistant alloys; Subject Term: COOLING; Subject Term: TRANSMISSION electron microscopy; Subject Term: NUCLEATION; Subject Term: CHEMICAL equilibrium; Author-Supplied Keyword: Atom probe tomography; Author-Supplied Keyword: Energy-filtered transmission electron microscopy; Author-Supplied Keyword: Gamma prime; Author-Supplied Keyword: Nickel base superalloy; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.matchar.2011.06.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=64851742&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eaton, Melinda AU - Marshall, Stephen W. AU - Fujimoto, Scott AU - Gould, Philip L. AU - Poole, Charles AU - Richardson, David B. T1 - Review of Non-Battle Injuries in Air Force Personnel Deployed in Support of Operation Enduring Freedom and Operation Iraqi Freedom. JO - Military Medicine JF - Military Medicine Y1 - 2011/09// VL - 176 IS - 9 M3 - Article SP - 1007 EP - 1014 PB - AMSUS SN - 00264075 AB - This study examines non-battle injuries among U.S. Air Force members deployed during Operations Iraqi and Enduring Freedom. A cohort of 275,843 Active Duty, Guard, and Reserve members were identified for the period September 11, 2001 through October 31, 2006. Data on injuries were obtained from electronic medical records and deployment time was obtained from manpower records. Poisson regression was used to estimate adjusted incidence rate ratios (IRRs). The most common non-battle injuries were sprains and strains (53%) followed by open wounds (27%). Guard and Reserve members tended to have a lower rate of orthopedic non-battle injuries than Active Duty members in crude analyses and after adjustment for age, previous deployment, sex, race/ethnicity, and occupation (IRR = 0.95: 95% CI = 0.89-1.02 and IRR = 0.85: 95% CI = 0.77-0.93). Results from this study are intended to facilitate further research of potential differences between Air Force components to reduce non-battle injuries in a deployed environment. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRMEN KW - WOUNDS & injuries KW - MEDICAL records KW - SPRAINS KW - DEPLOYMENT (Military strategy) KW - IRAQ War, 2003-2011 KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 66252513; Eaton, Melinda 1 Marshall, Stephen W. 2 Fujimoto, Scott 3 Gould, Philip L. 4 Poole, Charles 2 Richardson, David B. 2; Affiliation: 1: Epidemiology Consult Service, United States Air Force School of Aerospace Medicine, 1050 Forrer Boulevard. Kenering, OH 45420-1472 2: Department of Epidemiology, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill 2101 McGavran-Greenberg Hall, CB No. 7435, Chapel Hill, NC 27599-7435 3: Office of Health Information and Research, California Department of Public Health. Center for Health Statistics, 1616 Capitol Avenue-MS 5101, PO Box 997410. Sacramento, CA 95899-7410 4: Division of Public Health and Preventive Medicine, Air Force Medical Support Agency (AFMSA/SG3PB), 1400 Key Boulevard, Suite 400, Arlington, VA 22209; Source Info: Sep2011, Vol. 176 Issue 9, p1007; Subject Term: AIRMEN; Subject Term: WOUNDS & injuries; Subject Term: MEDICAL records; Subject Term: SPRAINS; Subject Term: DEPLOYMENT (Military strategy); Subject Term: IRAQ War, 2003-2011; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66252513&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lindsay, Douglas R. AU - Day, David V. AU - Halpin, Stanley M. T1 - Shared Leadership in the Military: Reality, Possibility, or Pipedream? JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2011/09// VL - 23 IS - 5 M3 - Article SP - 528 EP - 549 PB - Taylor & Francis Ltd SN - 08995605 AB - Shared leadership involves building a broader and deeper capacity for leadership that goes beyond a formally appointed leader. Several models of team leadership are reviewed, distinguishing between the leadership of teams from leadership in teams. Shared leadership is a variant of the latter in which everyone on the team is responsible for leadership and where leadership emerges through patterned interactions of team members. Overall, shared leadership appears to be a possibility for the military-and one that is needed because of the increasing complexity of missions-but efforts need to be undertaken to incorporate it into formal training and doctrine. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CULTURE KW - INTERPERSONAL relations KW - LEADERSHIP KW - MILITARY personnel KW - MILITARY personnel -- Psychology KW - TEAMS in the workplace KW - PEER relations KW - LEADERS KW - UNITED States. Air Force KW - UNITED States. Army N1 - Accession Number: 64903963; Lindsay, Douglas R. 1 Day, David V. 2 Halpin, Stanley M. 3; Affiliation: 1: Department of Behavioral Sciences & Leadership, United States Air Force Academy, Colorado Springs, Colorado, USA 2: University of Western Australia Business School, University of Western Australia, Perth, Australia 3: Fort Leavenworth Research Unit, U.S. Army Research Institute for the Behavioral and Social Sciences, Fort Leavenworth, Kansas, USA; Source Info: 2011, Vol. 23 Issue 5, p528; Subject Term: CULTURE; Subject Term: INTERPERSONAL relations; Subject Term: LEADERSHIP; Subject Term: MILITARY personnel; Subject Term: MILITARY personnel -- Psychology; Subject Term: TEAMS in the workplace; Subject Term: PEER relations; Subject Term: LEADERS; Company/Entity: UNITED States. Air Force Company/Entity: UNITED States. Army; NAICS/Industry Codes: 928110 National Security; Number of Pages: 22p; Document Type: Article L3 - 10.1080/08995605.2011.600150 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=64903963&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lin, Kuo-Cheng AU - Rajnicek, Christopher AU - McCall, Jonathan AU - Carter, Campbell AU - Fezzaa, Kamel T1 - Investigation of pure- and aerated-liquid jets using ultra-fast X-ray phase contrast imaging JO - Nuclear Instruments & Methods in Physics Research Section A JF - Nuclear Instruments & Methods in Physics Research Section A Y1 - 2011/09// VL - 649 IS - 1 M3 - Article SP - 194 EP - 196 SN - 01689002 AB - Abstract: Pure- and aerated-liquid jets were observed using the ultra-fast X-ray phase contrast imaging technique. Highly convoluted wrinkle structures were seen on the column surface of a turbulent pure-liquid jet, gas bubbles were discovered inside droplets and ligaments of aerated-liquid sprays, and apparently homogenous two-phase mixtures were observed inside the aerated-liquid injector. The major limitation of this X-ray technique lies in its line-of-sight nature, which can create overlapped objects/interfaces on the X-ray images. [Copyright &y& Elsevier] AB - Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JETS (Fluid dynamics) KW - IMAGING systems KW - X-rays KW - SYNCHROTRON radiation KW - ATOMIZATION KW - INTERFACES (Physical sciences) KW - BUBBLE dynamics KW - SURFACES (Technology) KW - TURBULENCE KW - Aerated-liquid jet KW - Air-breathing propulsion KW - Liquid atomization KW - Synchrotron radiation KW - Ultra-fast X-ray imaging N1 - Accession Number: 63978560; Lin, Kuo-Cheng 1; Email Address: Kuo-Cheng.Lin@wpafb.af.mil Rajnicek, Christopher 2 McCall, Jonathan 2 Carter, Campbell 2 Fezzaa, Kamel 3; Affiliation: 1: Taitech, Inc., Beavercreek, OH 45430, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 3: Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA; Source Info: Sep2011, Vol. 649 Issue 1, p194; Subject Term: JETS (Fluid dynamics); Subject Term: IMAGING systems; Subject Term: X-rays; Subject Term: SYNCHROTRON radiation; Subject Term: ATOMIZATION; Subject Term: INTERFACES (Physical sciences); Subject Term: BUBBLE dynamics; Subject Term: SURFACES (Technology); Subject Term: TURBULENCE; Author-Supplied Keyword: Aerated-liquid jet; Author-Supplied Keyword: Air-breathing propulsion; Author-Supplied Keyword: Liquid atomization; Author-Supplied Keyword: Synchrotron radiation; Author-Supplied Keyword: Ultra-fast X-ray imaging; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.nima.2010.11.122 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=63978560&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lin, Kuo-Cheng AU - Ryan, Michael AU - Carter, Campbell AU - Sandy, Alec AU - Narayanan, Suresh AU - Ilavsky, Jan AU - Wang, Jin T1 - Investigation of condensed supercritical ethylene jets using Small Angle X-ray Scattering (SAXS) technique JO - Nuclear Instruments & Methods in Physics Research Section A JF - Nuclear Instruments & Methods in Physics Research Section A Y1 - 2011/09// VL - 649 IS - 1 M3 - Article SP - 219 EP - 221 SN - 01689002 AB - Abstract: The ability of the Small Angle X-ray Scattering (SAXS) technique to measure small droplets generated by the nucleation process within a highly dynamic supercritical ethylene jet both inside and outside an injector was successfully demonstrated. Droplet nucleation, droplet size distribution, droplet growth, and the dependence of droplet nucleation/condensation on flow properties can be explored with the SAXS technique. [Copyright &y& Elsevier] AB - Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONDENSATION KW - SUPERCRITICAL fluids KW - ETHYLENE KW - JETS (Nuclear physics) KW - SMALL-angle X-ray scattering KW - NUCLEATION KW - PARTICLE size distribution KW - Air-breathing propulsion KW - Droplet nucleation KW - Small Angle X-ray Scattering KW - Supercritical fluid N1 - Accession Number: 63978530; Lin, Kuo-Cheng 1; Email Address: Kuo-Cheng.Lin@wpafb.af.mil Ryan, Michael 2 Carter, Campbell 3 Sandy, Alec 4 Narayanan, Suresh 4 Ilavsky, Jan 4 Wang, Jin 4; Affiliation: 1: Taitech, Inc., Beavercreek, OH 45430, USA 2: Universal Technology Corporation, Beavercreek, OH 45430, USA 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 4: Argonne National Laboratory, Chicago, IL 60439, USA; Source Info: Sep2011, Vol. 649 Issue 1, p219; Subject Term: CONDENSATION; Subject Term: SUPERCRITICAL fluids; Subject Term: ETHYLENE; Subject Term: JETS (Nuclear physics); Subject Term: SMALL-angle X-ray scattering; Subject Term: NUCLEATION; Subject Term: PARTICLE size distribution; Author-Supplied Keyword: Air-breathing propulsion; Author-Supplied Keyword: Droplet nucleation; Author-Supplied Keyword: Small Angle X-ray Scattering; Author-Supplied Keyword: Supercritical fluid; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.nima.2010.12.061 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=63978530&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fitzkee, David E. T1 - Religious Speech in the Military: Freedoms and Limitations. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College Y1 - 2011/09// VL - 41 IS - 3 M3 - Article SP - 59 EP - 72 SN - 00311723 AB - The article discusses religious speech by members of the U.S. military, with particular focus given to the influence of free speech rights and limitations specific to the military. An overview of laws regarding religious speech in the military is presented, and advice for military leaders on protecting the free speech of their subordinates while enforcing appropriate limits is offered. KW - FREEDOM of speech KW - MILITARY law KW - FREEDOM of religion KW - UNITED States N1 - Accession Number: 73781207; Fitzkee, David E. 1; Affiliation: 1: Associate professor, Department of Law, US Air Force Academy; Source Info: Autumn2011, Vol. 41 Issue 3, p59; Subject Term: FREEDOM of speech; Subject Term: MILITARY law; Subject Term: FREEDOM of religion; Subject Term: UNITED States; Number of Pages: 14p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73781207&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, A. Matthew AU - Uskov, D. B. AU - Ying, L. H. AU - Kaplan, L. T1 - Imperfect linear-optical photonic gates with number-resolving photodetection. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2011/09// VL - 84 IS - 3-A M3 - Article SP - 032341-1 EP - 032341-7 SN - 10502947 AB - We use the numerical optimization techniques of Uskov et al. [Phys. Rev. A 81, 012303 (2010)] to investigate the behavior of the success rates for Knill-Laflamme-Milburn-style [Knill et al., Nature (London) 409, 46 (2001)] two- and three-qubit entangling gates. The methods are first demonstrated at perfect fidelity and then extended to imperfect gates. We find that as the perfect fidelity condition is relaxed, the maximum attainable success rates increase in a predictable fashion depending on the size of the system, and we compare that rate of increase for several gates. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL optimization KW - QUANTUM entanglement KW - QUANTUM theory KW - OPTOELECTRONIC devices KW - SOLID state electronics N1 - Accession Number: 70064319; Smith, A. Matthew 1,2 Uskov, D. B. 1,3 Ying, L. H. 1 Kaplan, L. 1; Affiliation: 1: Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, USA 2: Air Force Research Laboratory, Information Directorate, Rome, New York 13440, USA 3: Department of Mathematics and Natural Sciences, Brescia University, Owensboro, Kentucky 42301, USA; Source Info: Sep2011, Vol. 84 Issue 3-A, p032341-1; Subject Term: MATHEMATICAL optimization; Subject Term: QUANTUM entanglement; Subject Term: QUANTUM theory; Subject Term: OPTOELECTRONIC devices; Subject Term: SOLID state electronics; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1103/PhysRevA.84.032341 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70064319&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Garmann, Daniel J. AU - Visbal, Miguel R. T1 - Numerical investigation of transitional flow over a rapidly pitching plate. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2011/09// VL - 23 IS - 9 M3 - Article SP - 094106 PB - American Institute of Physics SN - 10706631 AB - A computational study of a plate undergoing high amplitude, pitch, hold, and return motions is presented. An implicit large eddy simulation (ILES) technique is employed to capture the laminar-to-turbulent transition process as the plate is pitched to high angles of attack. Simulations are performed for Reynolds numbers between 5000 and 40 000 with motion profiles of varying accelerations and hold times. The solutions show extremely favorable flow field comparisons of span-averaged stream-wise velocity and out-of-plane vorticity with available experimental Particle Image Velocimetry (PIV) measurements. At a given Reynolds number, the span-averaged flow fields and aerodynamic loading show little sensitivity to the acceleration of the plate for the motions examined. The three-dimensional flow field structure reveals a very rapid transition process that occurs almost at the onset of motion for the higher Reynolds number cases. In spite of this, the aerodynamic loads for those cases compare closely with the same motions at lower Reynolds numbers. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUMERICAL analysis KW - PITCHING (Aerodynamics) KW - PLATES (Engineering) KW - SIMULATION methods & models KW - TURBULENCE KW - REYNOLDS number KW - PARTICLE image velocimetry KW - PARTICLE acceleration KW - AERODYNAMIC load N1 - Accession Number: 66184852; Garmann, Daniel J. 1 Visbal, Miguel R. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433,; Source Info: Sep2011, Vol. 23 Issue 9, p094106; Subject Term: NUMERICAL analysis; Subject Term: PITCHING (Aerodynamics); Subject Term: PLATES (Engineering); Subject Term: SIMULATION methods & models; Subject Term: TURBULENCE; Subject Term: REYNOLDS number; Subject Term: PARTICLE image velocimetry; Subject Term: PARTICLE acceleration; Subject Term: AERODYNAMIC load; NAICS/Industry Codes: 332313 Plate Work Manufacturing; Number of Pages: 15p; Document Type: Article L3 - 10.1063/1.3626407 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66184852&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Basu, B. AU - Grossbard, N. J. T1 - Ion-cyclotron instability in current-carrying Lorentzian (kappa) and Maxwellian plasmas with anisotropic temperatures: A comparative study. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2011/09// VL - 18 IS - 9 M3 - Article SP - 092106 PB - American Institute of Physics SN - 1070664X AB - Current-driven electrostatic ion-cyclotron instability has so far been studied for Maxwellian plasma with isotropic and anisotropic temperatures. Since satellite-measured particle velocity distributions in space are often better modeled by the generalized Lorentzian (kappa) distributions and since temperature anisotropy is quite common in space plasmas, theoretical analysis of the current-driven, electrostatic ion-cyclotron instability is carried out in this paper for electron-proton plasma with anisotropic temperatures, where the particle parallel velocity distributions are modeled by kappa distributions and the perpendicular velocity distributions are modeled by Maxwellian distributions. Stability properties of the excited ion cyclotron modes and, in particular, their dependence on electron to ion temperature ratio and ion temperature anisotropy are presented in more detail. For comparison, the corresponding results for bi-Maxwellian plasma are also presented. Although the stability properties of the ion cyclotron modes in the two types of plasmas are qualitatively similar, significant quantitative differences can arise depending on the values of κe and κi. The comparative study is based on the numerical solutions of the respective linear dispersion relations. Quasilinear estimates of the resonant ion heating rates due to ion-cyclotron turbulence in the two types of plasma are also presented for comparison. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CYCLOTRONS KW - IONS KW - PLASMA (Ionized gases) KW - ANISOTROPY KW - TEMPERATURE KW - ELECTROSTATICS KW - GENERALIZATION KW - MAXWELL-Boltzmann distribution law N1 - Accession Number: 66184760; Basu, B. 1 Grossbard, N. J. 2; Affiliation: 1: Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731, 2: Boston College, Chestnut Hill, Massachusetts 02467,; Source Info: Sep2011, Vol. 18 Issue 9, p092106; Subject Term: CYCLOTRONS; Subject Term: IONS; Subject Term: PLASMA (Ionized gases); Subject Term: ANISOTROPY; Subject Term: TEMPERATURE; Subject Term: ELECTROSTATICS; Subject Term: GENERALIZATION; Subject Term: MAXWELL-Boltzmann distribution law; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1063/1.3632974 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66184760&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kyung Min Lee AU - White, Timothy J. T1 - Photomechanical Response of Composite Structures Built from Azobenzene Liquid Crystal Polymer Networks. JO - Polymers (20734360) JF - Polymers (20734360) Y1 - 2011/09// VL - 3 IS - 3 M3 - Article SP - 1447 EP - 1457 SN - 20734360 AB - Optically directed shape adaptive responses have been sought after for many decades in photoresponsive polymeric materials. A number of recent examinations have elucidated elucidated the unique opportunities of photomechanical responses realized in azobenzene-functionalized liquid crystalline polymer networks (both elastomers and glasses). This work summarizes and contrasts the photomechanical response of glassy polydomain, monodomain, and twisted nematic azo-LCN materials to blue-green irradiation. Building from this summary, the combinatorial photomechanical response observed upon irradiation of composite cantilevers is examined. Large scale shape adaptations are realized, with novel responses that may be of potential use in future employment of these materials in actuation. [ABSTRACT FROM AUTHOR] AB - Copyright of Polymers (20734360) is the property of MDPI Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOMECHANICAL processes KW - POLYMER liquid crystals KW - POLYMERS -- Optical properties KW - IRRADIATION KW - ELASTOMERS KW - CANTILEVERS KW - azobenzene KW - liquid crystal KW - photomechanical N1 - Accession Number: 67028595; Kyung Min Lee 1,2; Email Address: kyungmin.lee@wpafb.af.mil White, Timothy J. 1; Email Address: timothy.white2@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, OH 45433, USA 2: Azimuth Corporation, Dayton, OH 45433, USA; Source Info: Sep2011, Vol. 3 Issue 3, p1447; Subject Term: PHOTOMECHANICAL processes; Subject Term: POLYMER liquid crystals; Subject Term: POLYMERS -- Optical properties; Subject Term: IRRADIATION; Subject Term: ELASTOMERS; Subject Term: CANTILEVERS; Author-Supplied Keyword: azobenzene; Author-Supplied Keyword: liquid crystal; Author-Supplied Keyword: photomechanical; NAICS/Industry Codes: 325212 Synthetic Rubber Manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 11p; Illustrations: 5 Diagrams; Document Type: Article L3 - 10.3390/polym3031447 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67028595&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parthasarathy, T.A. AU - Porter, W.J. AU - Boone, S. AU - John, R. AU - Martin, P. T1 - Life prediction under tension of titanium alloys that develop an oxygenated brittle case during use JO - Scripta Materialia JF - Scripta Materialia Y1 - 2011/09// VL - 65 IS - 5 M3 - Article SP - 420 EP - 423 SN - 13596462 AB - A simple model was used to predict the tendency of an (α+β) titanium alloy to crack under tension after exposure to air at temperature. The model was experimentally validated for minimum stress to crack and saturation crack spacing. A diffusion model for oxygen ingress as a function of time, temperature and oxygen partial pressure is outlined; together with the surface cracking model and empirical crack growth models, this enables the framework for a life prediction tool for arbitrary time–temperature–environment history. [ABSTRACT FROM AUTHOR] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE tension KW - TITANIUM alloys KW - PREDICTION models KW - FRACTURE mechanics KW - TEMPERATURE effect KW - OXYGEN KW - CRYSTAL growth KW - STRAINS & stresses (Mechanics) KW - Alpha case KW - Brittle case KW - Cracks KW - Oxygen KW - Titanium N1 - Accession Number: 62274500; Parthasarathy, T.A. 1,2; Email Address: triplicane.parthasarathy@wpafb.af.mil Porter, W.J. 3 Boone, S. 1,2 John, R. 2 Martin, P. 2; Affiliation: 1: UES, Inc., Dayton, OH 45432, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLM, Wright-Patterson AFB, OH, USA 3: University of Dayton Research Institute, Dayton, OH, USA; Source Info: Sep2011, Vol. 65 Issue 5, p420; Subject Term: SURFACE tension; Subject Term: TITANIUM alloys; Subject Term: PREDICTION models; Subject Term: FRACTURE mechanics; Subject Term: TEMPERATURE effect; Subject Term: OXYGEN; Subject Term: CRYSTAL growth; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: Alpha case; Author-Supplied Keyword: Brittle case; Author-Supplied Keyword: Cracks; Author-Supplied Keyword: Oxygen; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2011.05.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62274500&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yan, H. AU - Gaitonde, D. T1 - Parametric study of pulsed thermal bumps in supersonic boundary layer. JO - Shock Waves JF - Shock Waves Y1 - 2011/09// VL - 21 IS - 5 M3 - Article SP - 411 EP - 423 SN - 09381287 AB - A three-dimensional numerical study is performed to explore the effect of pulsed spanwise-periodic surface thermal perturbation (also denoted as thermal bump) in a Mach 1.5 flat plate laminar boundary layer. A high-resolution upwind-biased Roe method is used with the compressive Van Leer harmonic limiter on a suitably refined mesh. The dependence of flow stability characteristics on the variation of thermal bump geometry (shape and dimension) and pulsing properties (disturbance amplitude and frequency) is assessed. It is shown that the finite-span thermal bumps generate streamwise vortices. When the thermal bump is pulsed, vortex shedding is observed, and the streamwise vorticity grows with the downstream distance. Analysis of the integrated disturbance energy indicates that the streamwise kinetic disturbance energy dominates over those associated with other two velocity and thermodynamic components. Immediately downstream of the bump, the dominant frequency corresponds to that of the imposed excitation while higher harmonic components are observed farther downstream. An analysis of parametric variation of bump shape and dimension indicates that finite bump span is important in injecting three dimensionality and that the rectangular shape results in faster disturbance growth than the circular one. The study also concludes that disturbance growth is non-linear with bump temperature and has a strong connection with pulsing frequency. [ABSTRACT FROM AUTHOR] AB - Copyright of Shock Waves is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BOUNDARY layer (Aerodynamics) KW - FLUID dynamics KW - STABILITY (Mechanics) KW - VORTEX motion KW - HYDRODYNAMICS KW - Boundary layer transition KW - Supersonic boundary layer KW - Supersonic flow control KW - Thermal perturbation N1 - Accession Number: 64845847; Yan, H. 1; Email Address: hong.yan@wright.edu Gaitonde, D. 2; Affiliation: 1: Department of Mechanical and Materials Engineering, Wright State University, 3640 Colonel Glenn Hwy Dayton 45435 USA 2: Computational Sciences Branch, Aeronautical Sciences Division, Air Vehicles Directorate, Air Force Research Laboratory, Wright-Patterson AFB 45433 USA; Source Info: Sep2011, Vol. 21 Issue 5, p411; Subject Term: BOUNDARY layer (Aerodynamics); Subject Term: FLUID dynamics; Subject Term: STABILITY (Mechanics); Subject Term: VORTEX motion; Subject Term: HYDRODYNAMICS; Author-Supplied Keyword: Boundary layer transition; Author-Supplied Keyword: Supersonic boundary layer; Author-Supplied Keyword: Supersonic flow control; Author-Supplied Keyword: Thermal perturbation; Number of Pages: 13p; Document Type: Article L3 - 10.1007/s00193-011-0309-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=64845847&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Matthews, Gerald AU - Warm, Joel S. AU - Reinerman-Jones, Lauren E. AU - Langheim, Lisa K. AU - Guznov, Svyatoslav AU - Shaw, Tyler H. AU - Finomore, Victor S. T1 - The functional fidelity of individual differences research: the case for context-matching. JO - Theoretical Issues in Ergonomics Science JF - Theoretical Issues in Ergonomics Science Y1 - 2011/09// VL - 12 IS - 5 M3 - Article SP - 435 EP - 450 SN - 1463922X AB - Applying basic research on individual differences in performance requires a kind of 'functional fidelity'. That is, the laboratory environment must elicit individual differences in cognition and emotion similar to those seen in the operational setting. Studies of conventional personality traits and performance often lack this functional fidelity. Four research directions for enhancing functional fidelity are proposed. First, a greater focus on simulated operational tasks that require cognitive skills is requisite. Second, contexts relevant to specific personality traits, such as social demands, may be simulated in the laboratory. Third, traits linked to a specific performance context, such as vehicle driving, may be developed and validated. Fourth, psychophysiological responses to tasks that reproduce operational cognitive demands may be used as predictors, as exemplified in recent studies of vigilance. Enhancements to functional fidelity will assist human factors practitioners in accommodating the role of individual differences in operator selection, diagnostic monitoring and augmented cognition. [ABSTRACT FROM AUTHOR] AB - Copyright of Theoretical Issues in Ergonomics Science is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COGNITION KW - EMOTIONS (Psychology) KW - INDIVIDUALITY KW - LABORATORIES KW - MATHEMATICAL models KW - MOTOR vehicle driving KW - NEUROSES KW - PERSONALITY KW - STRESS (Psychology) KW - TEAMS in the workplace KW - EMPLOYEES -- Workload KW - THEORY KW - TASK performance KW - BEHAVIORAL research KW - diagnostic monitoring KW - individual differences KW - operator selection KW - personality KW - skilled performance N1 - Accession Number: 62667372; Matthews, Gerald 1 Warm, Joel S. 2 Reinerman-Jones, Lauren E. 3 Langheim, Lisa K. 1 Guznov, Svyatoslav 1 Shaw, Tyler H. 4 Finomore, Victor S. 2; Affiliation: 1: Department of Psychology, University of Cincinnati, Cincinnati, OH 45221-0376, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, USA 3: Institute for Simulation and Training, University of Central Florida, Orlando, FL, USA 4: Department of Psychology, George Mason University, Fairfax, VA, USA; Source Info: Sep2011, Vol. 12 Issue 5, p435; Subject Term: COGNITION; Subject Term: EMOTIONS (Psychology); Subject Term: INDIVIDUALITY; Subject Term: LABORATORIES; Subject Term: MATHEMATICAL models; Subject Term: MOTOR vehicle driving; Subject Term: NEUROSES; Subject Term: PERSONALITY; Subject Term: STRESS (Psychology); Subject Term: TEAMS in the workplace; Subject Term: EMPLOYEES -- Workload; Subject Term: THEORY; Subject Term: TASK performance; Subject Term: BEHAVIORAL research; Author-Supplied Keyword: diagnostic monitoring; Author-Supplied Keyword: individual differences; Author-Supplied Keyword: operator selection; Author-Supplied Keyword: personality; Author-Supplied Keyword: skilled performance; NAICS/Industry Codes: 541940 Veterinary Services; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 621511 Medical Laboratories; NAICS/Industry Codes: 541720 Research and Development in the Social Sciences and Humanities; Number of Pages: 16p; Document Type: Article L3 - 10.1080/1463922X.2010.549247 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62667372&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ullrich, B. AU - Brown, G. J. T1 - Doping of GaAs by laser ablated ZnTe. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2011/08/29/ VL - 99 IS - 9 M3 - Article SP - 091103 PB - American Institute of Physics SN - 00036951 AB - The exposure of GaAs to laser ablated ZnTe causes the formation of donor (Te)-acceptor (Zn) pair states. The photonically transferred dopants resulted in a distinct transition at 1.378 eV (FWHM ≤ 30 meV), visualized by room temperature photocurrent spectroscopy. The presence of impurity absorption in the GaAs was confirmed by transmission measurements. Notably, from the standpoint of technological applications, flipping the applied bias (±1.0 V) to the ZnTe/GaAs heterostructure switches the spectral photocurrent response between the fundamental GaAs absorption and the donor-acceptor transition peak. The results further reveal the influence of the ablating laser line on the optoelectronic device properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR doping KW - THERMIONIC converters KW - LASERS KW - OPTOELECTRONIC devices KW - DOPED semiconductors N1 - Accession Number: 65143999; Ullrich, B. 1; Email Address: bruno.ullrich@yahoo.com Brown, G. J. 1; Email Address: bruno.ullrich.ctr@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, Ohio 45433-7707, USA; Source Info: 8/29/2011, Vol. 99 Issue 9, p091103; Subject Term: SEMICONDUCTOR doping; Subject Term: THERMIONIC converters; Subject Term: LASERS; Subject Term: OPTOELECTRONIC devices; Subject Term: DOPED semiconductors; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.3630033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65143999&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucas, M.S. AU - Bourne, W.C. AU - Sheets, A.O. AU - Brunke, L. AU - Alexander, M.D. AU - Shank, J.M. AU - Michel, E. AU - Semiatin, S.L. AU - Horwath, J. AU - Turgut, Z. T1 - Nanocrystalline Hf and Ta containing FeCo based alloys for high frequency applications JO - Materials Science & Engineering: B JF - Materials Science & Engineering: B Y1 - 2011/08/25/ VL - 176 IS - 14 M3 - Article SP - 1079 EP - 1084 SN - 09215107 AB - Abstract: FeCo based nanocrystalline materials have excellent soft magnetic properties even at high temperature, but are limited to low frequency applications due to their relatively low electrical resistivities, ρ e , resulting in high eddy current losses. Amorphous alloys of (Fe81Co19)84M9B7 where M=(Hf, HfTa, Ta) were prepared by meltspinning and annealed for increasing times at their respective crystallization temperatures. The nanocrystalline alloys had coercivities less than 0.4Oe and saturation inductions greater than 1T. The electrical resistivities of the amorphous ribbons were all similar with values of ρ e ≃180μΩ cm. After annealing at the crystallization temperature, the M=Ta alloy had the largest ρ e of 140±3μΩcm. The Ta alloy also had the best high frequency properties, with an initial permeability of 822 at 1MHz. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOCRYSTALS KW - IRON alloys KW - METALS -- Magnetic properties KW - TEMPERATURE effect KW - ELECTRIC resistance KW - AMORPHOUS substances KW - EDDY currents (Electric) KW - PERMEABILITY KW - MAGNETIC materials KW - CRYSTALLIZATION KW - Amorphous metals KW - Crystallization KW - Electrical resistivity KW - FeCo alloys KW - Soft magnetic materials N1 - Accession Number: 63566552; Lucas, M.S. 1,2; Email Address: matthew.steven.lucas@gmail.com Bourne, W.C. 1,3 Sheets, A.O. 1,4 Brunke, L. 5 Alexander, M.D. 1 Shank, J.M. 1,4 Michel, E. 1,6 Semiatin, S.L. 1 Horwath, J. 1 Turgut, Z. 1,4; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: UTC Inc., 1270 North Fairfield Road, Dayton, OH 45432, USA 3: Innovative Scientific Solutions Inc., 2766 Indian Ripple Road, Dayton, OH 45440, USA 4: UES Inc., Wright-Patterson AFB, OH 45433, USA 5: University of Dayton Research Institute, Dayton, OH 45469-0170, USA 6: Wright State University, Dayton, OH 45435, USA; Source Info: Aug2011, Vol. 176 Issue 14, p1079; Subject Term: NANOCRYSTALS; Subject Term: IRON alloys; Subject Term: METALS -- Magnetic properties; Subject Term: TEMPERATURE effect; Subject Term: ELECTRIC resistance; Subject Term: AMORPHOUS substances; Subject Term: EDDY currents (Electric); Subject Term: PERMEABILITY; Subject Term: MAGNETIC materials; Subject Term: CRYSTALLIZATION; Author-Supplied Keyword: Amorphous metals; Author-Supplied Keyword: Crystallization; Author-Supplied Keyword: Electrical resistivity; Author-Supplied Keyword: FeCo alloys; Author-Supplied Keyword: Soft magnetic materials; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 423510 Metal Service Centers and Other Metal Merchant Wholesalers; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.mseb.2011.05.044 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=63566552&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ullrich, B. AU - Wang, J. S. AU - Brown, G. J. T1 - Analysis of thermal band gap variations of PbS quantum dots by Fourier transform transmission and emission spectroscopy. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2011/08/22/ VL - 99 IS - 8 M3 - Article SP - 081901 PB - American Institute of Physics SN - 00036951 AB - Fourier transmission and emission spectroscopy was employed in the range from 5 to 300 K to measure the thermal band gap shift of 4.7 nm PbS quantum dots. The analytical comparison of fits carried out with the expressions of Varshni and Fan revealed limited accuracy of the Varshni fitting parameters. Evidence is presented that transmission spectroscopy in conjunction with the Fan model concurs with the microscopic material features, resulting in a tool to determine intrinsic properties of quantum dots. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FOURIER transform spectroscopy KW - SPECTRUM analysis KW - EMISSION spectroscopy KW - QUANTUM dots KW - FOURIER transform optics N1 - Accession Number: 65024773; Ullrich, B. 1; Email Address: bruno.ullrich.ctr@wpafb.af.mil Wang, J. S. 1 Brown, G. J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, Ohio 45433-7707, USA; Source Info: 8/22/2011, Vol. 99 Issue 8, p081901; Subject Term: FOURIER transform spectroscopy; Subject Term: SPECTRUM analysis; Subject Term: EMISSION spectroscopy; Subject Term: QUANTUM dots; Subject Term: FOURIER transform optics; Number of Pages: 3p; Illustrations: 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.3623486 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65024773&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nguyen, Kiet A. AU - Day, Paul N. AU - Pachter, Ruth T1 - The performance and relationship among range-separated schemes for density functional theory. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2011/08/21/ VL - 135 IS - 7 M3 - Article SP - 074109 PB - American Institute of Physics SN - 00219606 AB - The performance and relationship among different range-separated (RS) hybrid functional schemes are examined using the Coulomb-attenuating method (CAM) with different values for the fractions of exact Hartree-Fock (HF) exchange (α), long-range HF (β), and a range-separation parameter (μ), where the cases of α + β = 1 and α + β = 0 were designated as CA and CA0, respectively. Attenuated PBE exchange-correlation functionals with α = 0.20 and μ = 0.20 (CA-PBE) and α = 0.25 and μ = 0.11 (CA0-PBE) are closely related to the LRC-ωPBEh and HSE functionals, respectively. Time-dependent density functional theory calculations were carried out for a number of classes of molecules with varying degrees of charge-transfer (CT) character to provide an assessment of the accuracy of excitation energies from the CA functionals and a number of other functionals with different exchange hole models. Functionals that provided reasonable estimates for local and short-range CT transitions were found to give large errors for long-range CT excitations. In contrast, functionals that afforded accurate long-range CT excitation energies significantly overestimated energies for short-range CT and local transitions. The effects of exchange hole models and parameters developed for RS functionals for CT excitations were analyzed in detail. The comparative analysis across compound classes provides a useful benchmark for CT excitations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DENSITY functionals KW - ATTENUATION (Physics) KW - HARTREE-Fock approximation KW - COMPARATIVE studies KW - CHARGE transfer KW - PARAMETER estimation KW - CHEMICAL reactions N1 - Accession Number: 64459260; Nguyen, Kiet A. 1,2 Day, Paul N. 1,3 Pachter, Ruth 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, 2: UES, Inc., Dayton, Ohio 45432, 3: General Dynamics Information Technology, Inc., Dayton, Ohio 45431,; Source Info: 8/21/2011, Vol. 135 Issue 7, p074109; Subject Term: DENSITY functionals; Subject Term: ATTENUATION (Physics); Subject Term: HARTREE-Fock approximation; Subject Term: COMPARATIVE studies; Subject Term: CHARGE transfer; Subject Term: PARAMETER estimation; Subject Term: CHEMICAL reactions; Number of Pages: 10p; Illustrations: 4 Diagrams, 6 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.3624889 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=64459260&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guenthner, Andrew J. AU - Davis, Matthew C. AU - Lamison, Kevin R. AU - Yandek, Gregory R. AU - Cambrea, Lee R. AU - Groshens, Thomas J. AU - Baldwin, Lawrence C. AU - Mabry, Joseph M. T1 - Synthesis, cure kinetics, and physical properties of a new tricyanate ester with enhanced molecular flexibility JO - Polymer JF - Polymer Y1 - 2011/08/18/ VL - 52 IS - 18 M3 - Article SP - 3933 EP - 3942 SN - 00323861 AB - Abstract: 1,2,3-Tris(4-cyanatophenyl)propane, a new tricyanate ester monomer that was designed to incorporate more flexible chemical linkages at junction points in the cured macromolecular network, was synthesized in nine steps with an overall yield of 26%. The highly purified monomer exhibited an activation energy of 110 kJ/mol for auto-catalytic cure at temperatures of 210 °C–290 °C, modestly lower than the comparably measured activation energy of a commercial cyanated novolac. The overall extent of cure achievable at these temperatures was also higher for the new monomer. Many physical properties of the cured monomer, including density, thermochemical stability, moisture uptake, and the impact of hydrolytic degradation on glass transition temperature were similar to those of commercial tricyanates, with a dry glass transition temperature at full conversion of at least 340 °C. These results illustrate how careful control of the local chemical structure in the vicinity of network junction points may be utilized to improve the properties of thermosetting polymer networks. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ESTERS KW - DYNAMICS KW - ORGANIC synthesis (Chemistry) KW - CYANATES KW - THERMOCHEMISTRY KW - MACROMOLECULES KW - AUTOCATALYSIS KW - GLASS transition temperature KW - Activation energy KW - Cure kinetics KW - Cyanate ester N1 - Accession Number: 64852293; Guenthner, Andrew J. 1; Email Address: andrewguenthner@gmail.com Davis, Matthew C. 2 Lamison, Kevin R. 3 Yandek, Gregory R. 1 Cambrea, Lee R. 2 Groshens, Thomas J. 2 Baldwin, Lawrence C. 2 Mabry, Joseph M. 1; Affiliation: 1: Air Force Research Laboratory, Edwards AFB, CA 93524, USA 2: Naval Air Warfare Center, Weapons Division, China Lake, CA 93555, USA 3: ERC Corporation, Edwards AFB, CA 93524, USA; Source Info: Aug2011, Vol. 52 Issue 18, p3933; Subject Term: ESTERS; Subject Term: DYNAMICS; Subject Term: ORGANIC synthesis (Chemistry); Subject Term: CYANATES; Subject Term: THERMOCHEMISTRY; Subject Term: MACROMOLECULES; Subject Term: AUTOCATALYSIS; Subject Term: GLASS transition temperature; Author-Supplied Keyword: Activation energy; Author-Supplied Keyword: Cure kinetics; Author-Supplied Keyword: Cyanate ester; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.polymer.2011.07.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=64852293&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coppage, Ryan AU - Slocik, Joseph M. AU - Briggs, Beverly D. AU - Frenkel, Anatoly I. AU - Heinz, Hendrik AU - Naik, Rajesh R. AU - Knecht, Marc R. T1 - Crystallographic Recognition Controls Peptide Binding for Bio-Based Nanomaterials. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2011/08/17/ VL - 133 IS - 32 M3 - Article SP - 12346 EP - 12349 SN - 00027863 AB - The ability to control the size, shape, composition, and activity of nanomaterials presents a formidable challenge. Peptide approaches represent new avenues to achieve such control at the synthetic level; however, the critical interactions at the bio/nano interface that direct such precision remain poorly understood. Here we present evidence to suggest that materials-directing peptides bind at specific time points during Pd nanoparticle (NP) growth, dictated by material crystallinity. As such surfaces are presented, rapid peptide binding occurs, resulting in the stabilization and size control of single-crystal NPs. Such specificity suggests that peptides could be engineered to direct the structure of nanomaterials at the atomic level, thus enhancing their activity. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PEPTIDES KW - NANOSTRUCTURED materials KW - CRYSTALLIZATION KW - CHEMICAL bonds KW - STABILITY (Mechanics) N1 - Accession Number: 65264413; Coppage, Ryan 1 Slocik, Joseph M. 2 Briggs, Beverly D. 1 Frenkel, Anatoly I. 3 Heinz, Hendrik 4 Naik, Rajesh R. 2; Email Address: rajesh.naik@wpafb.af.mil Knecht, Marc R. 1; Email Address: knecht@miami.edu; Affiliation: 1: Department of Chemistry, University of Miami, Coral Gables, Florida 33124, United States 2: Nanostructured and Biological Materials Branch, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7702, United States 3: Department of Physics, Yeshiva University, New York, New York 10016, United States 4: Department of Polymer Engineering, University of Akron, Akron, Ohio 44325, United States; Source Info: 8/17/2011, Vol. 133 Issue 32, p12346; Subject Term: PEPTIDES; Subject Term: NANOSTRUCTURED materials; Subject Term: CRYSTALLIZATION; Subject Term: CHEMICAL bonds; Subject Term: STABILITY (Mechanics); Number of Pages: 4p; Document Type: Article L3 - 10.1021/ja203726n UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65264413&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Raymond Campos AU - Andrew J. Guenthner AU - Timothy S. Haddad AU - Joseph M. Mabry T1 - Fluoroalkyl-Functionalized Silica Particles: Synthesis, Characterization, and Wetting Characteristics. JO - Langmuir JF - Langmuir Y1 - 2011/08/16/ VL - 27 IS - 16 M3 - Article SP - 10206 EP - 10215 SN - 07437463 AB - Fluoroalkyl-functionalized silica particles for use in nonwetting surfaces were prepared by treatment of silica particles with fluoroalkyl-functional chlorosilanes. Both fumed and precipitated silica were studied, as well as the efficiency of surface coverage using mono-, di-, and trifunctional chlorosilanes. The most effective surface treatment was accomplished via the surface grafting of monofunctional chlorosilanes in the presence of preadsorbed dimethylamine under anhydrous conditions at room temperature. Confirmation of covalent attachment was accomplished via Fourier transform infrared (FT-IR) spectroscopy, while elemental analysis, thermogravimetric analysis, and nitrogen adsorption isotherms were used to determine grafting densities and additional key geometric characteristics of the grafted layer. The effect of residual silanol content on the moisture uptake properties of the modified silica particles was determined by measuring the water uptake of unbound particles, while liquid wetting properties were determined by dynamic contact angle analysis of elastomeric composites. Although residual silanol content was shown to effect wetting properties, results suggest that surface geometry dominates the performance of liquid-repellent surfaces. The potential use of fluoroalkyl-functionalized silica particles for hydrophobic and oleophobic applications is discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Langmuir is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANOFLUORINE compounds KW - FUNCTIONAL groups KW - SILICA KW - WETTING KW - SILANE compounds KW - PRECIPITATION (Chemistry) KW - SURFACES (Technology) KW - TEMPERATURE effect KW - FOURIER transform infrared spectroscopy N1 - Accession Number: 64856185; Raymond Campos 1 Andrew J. Guenthner 1 Timothy S. Haddad 1 Joseph M. Mabry 1; Affiliation: 1: ERC, Inc., Space & Missile Propulsion Division, Air Force Research Laboratory, Edwards AFB, California 93524, United States; Source Info: Aug2011, Vol. 27 Issue 16, p10206; Subject Term: ORGANOFLUORINE compounds; Subject Term: FUNCTIONAL groups; Subject Term: SILICA; Subject Term: WETTING; Subject Term: SILANE compounds; Subject Term: PRECIPITATION (Chemistry); Subject Term: SURFACES (Technology); Subject Term: TEMPERATURE effect; Subject Term: FOURIER transform infrared spectroscopy; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=64856185&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Shibayan AU - Suwas, Satyam AU - Tamirisakandala, S. AU - Miracle, D.B. AU - Srinivasan, R. T1 - Development of solidification microstructure in boron-modified alloy Ti–6Al–4V–0.1B JO - Acta Materialia JF - Acta Materialia Y1 - 2011/08/15/ VL - 59 IS - 14 M3 - Article SP - 5494 EP - 5510 SN - 13596454 AB - Abstract: Hypoeutectic boron addition (0.1wt.%) to Ti–6Al–4V is known to cause significant refinement of the cast microstructure. In the present investigation, it has been observed that trace boron addition to Ti–6Al–4V alloy also ensures excellent microstructural homogeneity throughout the ingot. A subdued thermal gradient, related to the basic grain refinement mechanism by constitutional undercooling, persists during solidification for the boron-containing alloy and maintains equivalent β grain growth kinetics at different locations in the ingot. The Ti–6Al–4V alloy shows relatively strong texture with preferred components (e.g. ingot axis||[0001] or [10 ]) over the entire ingot and gradual transition of texture components along the radius. For Ti–6Al–4V–0.1B alloy, significant weakening characterizes both the high-temperature β and room-temperature α texture. In addition to solidification factors that are responsible for weak β texture development, microstructural differences due to boron addition, e.g. the absence of grain boundary α phase and presence of TiB particles, strongly affects the mechanism of β→α phase transformation and consequently weakens the α phase texture. Based on the understanding developed for the boron-modified alloy, a novel mechanism has been proposed for the microstructure and texture formation during solidification and phase transformation. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BORON KW - TITANIUM alloys KW - SOLIDIFICATION KW - MICROSTRUCTURE KW - CRYSTAL grain boundaries KW - DYNAMICS KW - METALS -- Texture KW - PHASE transformations (Physics) KW - Boron addition KW - EBSD KW - Microstructure KW - Solidification KW - Titanium alloy N1 - Accession Number: 62965856; Roy, Shibayan 1 Suwas, Satyam 1; Email Address: satyamsuwas@materials.iisc.ernet.in Tamirisakandala, S. 2,3 Miracle, D.B. 3 Srinivasan, R. 4; Affiliation: 1: Department of Materials Engineering, Indian Institute of Science, Bangalore, India 2: FMW Composite Systems Inc., Bridgeport, WV, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH, USA 4: Mechanical and Material Engineering Department, Wright State University, Dayton, OH, USA; Source Info: Aug2011, Vol. 59 Issue 14, p5494; Subject Term: BORON; Subject Term: TITANIUM alloys; Subject Term: SOLIDIFICATION; Subject Term: MICROSTRUCTURE; Subject Term: CRYSTAL grain boundaries; Subject Term: DYNAMICS; Subject Term: METALS -- Texture; Subject Term: PHASE transformations (Physics); Author-Supplied Keyword: Boron addition; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Solidification; Author-Supplied Keyword: Titanium alloy; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.actamat.2011.05.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62965856&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tawk, Y. AU - Bkassiny, M. AU - El-Howayek, G. AU - Jayaweera, S.K. AU - Avery, K. AU - Christodoulou, C.G. T1 - Reconfigurable front-end antennas for cognitive radio applications. JO - IET Microwaves, Antennas & Propagation JF - IET Microwaves, Antennas & Propagation Y1 - 2011/08/15/ VL - 5 IS - 8 M3 - Article SP - 985 EP - 992 PB - Institution of Engineering & Technology SN - 17518725 AB - This study presents new antenna schemes suitable for cognitive radio communications. The antenna structures consist of a ultra wide band (UWB) sensing antenna, and a frequency reconfigurable communicating antenna both incorporated into the same substrate. Two different techniques to achieve the required frequency agility are proposed. The first one is based on a rotational motion of the radiating patch whereas the second is based on optical switching. The importance of these techniques is that no bias lines are needed as is seen in the case of RF MEMs, PIN diodes and lumped elements. Prototype antennas were fabricated and a good agreement was observed between the simulated and the measured data. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Microwaves, Antennas & Propagation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOFTWARE radio KW - ANTENNA arrays KW - ULTRA-wideband antennas KW - RADIO frequency KW - ROTATIONAL motion KW - INTEGRATED optics KW - SIMULATION methods & models KW - MICROFABRICATION KW - PROTOTYPES N1 - Accession Number: 61872555; Tawk, Y. 1 Bkassiny, M. 1 El-Howayek, G. 1 Jayaweera, S.K. 1 Avery, K. 2 Christodoulou, C.G. 1; Affiliation: 1: University of New Mexico, Electrical and Computer Engineering Department, Albuquerque, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, USA; Source Info: Aug2011, Vol. 5 Issue 8, p985; Subject Term: SOFTWARE radio; Subject Term: ANTENNA arrays; Subject Term: ULTRA-wideband antennas; Subject Term: RADIO frequency; Subject Term: ROTATIONAL motion; Subject Term: INTEGRATED optics; Subject Term: SIMULATION methods & models; Subject Term: MICROFABRICATION; Subject Term: PROTOTYPES; Number of Pages: 8p; Illustrations: 2 Diagrams, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1049/iet-map.2010.0358 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61872555&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kulkarni, Hemant AU - Okulicz, Jason F AU - Grandits, Greg AU - Crum-Cianflone, Nancy F AU - Landrum, Michael L AU - Hale, Braden AU - Wortmann, Glenn AU - Tramont, Edmund AU - Polis, Michael AU - Dolan, Matthew AU - Lifson, Alan R AU - Agan, Brian K AU - Ahuja, Sunil K AU - Marconi, Vincent C T1 - Early Postseroconversion CD4 Cell Counts Independently Predict CD4 Cell Count Recovery in HIV-1-Postive Subjects Receiving Antiretroviral Therapy. JO - JAIDS: Journal of Acquired Immune Deficiency Syndromes JF - JAIDS: Journal of Acquired Immune Deficiency Syndromes Y1 - 2011/08/15/ VL - 57 IS - 5 M3 - Article SP - 387 EP - 395 SN - 15254135 AB - The relationship between CD4+ T-cell counts determined soon after seroconversion with HIV-1 (baseline CD4), nadir CD4, and CD4 levels attained during highly active antiretroviral therapy (HAART) is unknown.Longitudinal, including baseline (at or soon after HIV diagnosis), intermediate (nadir), and distal (post-HAART) CD4+ T-cell counts were assessed in 1085 seroconverting subjects who achieved viral load suppression from a large well-characterized cohort. The association of baseline with post-HAART CD4+ T-cell count was determined after adjustment for other relevant covariates.A higher baseline CD4+ T-cell count predicted a greater post-HAART CD4+ T-cell count, independent of the nadir and other explanatory variables. Together, baseline and nadir strongly predicted the post-HAART CD4+ count such that a high baseline and lower nadir were associated with a maximal immune recovery after HAART. Likelihood of recovery of the baseline count after HAART was significantly higher when the nadir/baseline count ratio was consistently ≥0.6.Among viral load suppressing seroconverters, the absolute CD4+ T-cell count attained post-HAART is highly dependent on both baseline and nadir CD4+ T-cell counts. These associations further support the early diagnosis and initiation of HAART among HIV-infected persons. [ABSTRACT FROM AUTHOR] AB - Copyright of JAIDS: Journal of Acquired Immune Deficiency Syndromes is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CD4 count KW - highly active antiretroviral therapy KW - outcomes KW - predictors KW - treatment response N1 - Accession Number: 111789234; Kulkarni, Hemant 1 Okulicz, Jason F 1 Grandits, Greg 1 Crum-Cianflone, Nancy F 1 Landrum, Michael L 1 Hale, Braden 1 Wortmann, Glenn 1 Tramont, Edmund 1 Polis, Michael 1 Dolan, Matthew 1 Lifson, Alan R 1 Agan, Brian K 1 Ahuja, Sunil K 1 Marconi, Vincent C 1; Affiliation: 1: From the ∗Veterans Administration Research Center for AIDS and HIV-1 Infection, South Texas Veterans Health Care System, San Antonio, TX; †Department of Medicine, University of Texas Health Science Center, San Antonio, TX; ‡Infectious Disease Clinical Research Program, Uniformed Services University of the Health Sciences, Bethesda, MD; §Infectious Disease Service, San Antonio Military Medical Center, Brooke Army Medical Center, Fort Sam Houston, TX; ‖Division of Biostatistics, University of Minnesota, Minneapolis, MN; ¶Infectious Disease Clinic, Naval Medical Center San Diego, San Diego, CA; #Infectious Disease Service, Walter Reed Army Medical Center, Washington, DC; ∗∗National Institute for Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD; ††Henry M. Jackson Foundation, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, TX; ‡‡Division of Epidemiology and Community Health, University of Minnesota, Minneapolis, MN; §§Department of Microbiology and Immunology, and Biochemistry, University of Texas Health Science Center, San Antonio, TX; and ‖‖Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA.; Source Info: 8/15/2011, Vol. 57 Issue 5, p387; Author-Supplied Keyword: CD4 count; Author-Supplied Keyword: highly active antiretroviral therapy; Author-Supplied Keyword: outcomes; Author-Supplied Keyword: predictors; Author-Supplied Keyword: treatment response; Number of Pages: 9p; Document Type: Article; Full Text Word Count: 6470 L3 - 10.1097/QAI.0b013e3182219113 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=111789234&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Masoller, C. AU - Sukow, D. AU - Gavrielides, A. AU - Sciamanna, M. T1 - Bifurcation to square-wave switching in orthogonally delay-coupled semiconductor lasers: Theory and experiment. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2011/08/15/ VL - 84 IS - 2-B M3 - Article SP - 23838:1 EP - 23838:11 SN - 10502947 AB - We analyze the dynamics of two semiconductor lasers with so-called orthogonal time-delayed mutual coupling: the dominant TE (x) modes of each laser are rotated by 90° (therefore, TM polarization or y) before being coupled to the other laser. Although this laser system allows for steady-state emission in either one or in both polarization modes, it may also exhibit stable time-periodic dynamics including square waveforms. A theoretical mapping of the switching dynamics unveils the region in parameter space where one expects to observe long-term time-periodic mode switching. Detailed numerical simulations illustrate the role played by the coupling strength, the mode frequency detuning, or the mode gain to loss difference. We complement our theoretical study with several experiments and measurements. We present time series and intensity spectra associated with the characteristics of the square waves and other waveforms observed as a function of the strength of the delay coupling. The experimental observations are in very good agreement with the analysis and the numerical results. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIFURCATION theory KW - SEMICONDUCTOR lasers KW - POLARIZATION (Nuclear physics) KW - COMPUTER simulation KW - NUMERICAL analysis N1 - Accession Number: 66736781; Masoller, C. 1 Sukow, D. 2 Gavrielides, A. 3 Sciamanna, M. 4; Affiliation: 1: Departament de Fisica i Enginyeria Nuclear, Universitat Politecnica de Catalunya, Colom 11, ES-08222 Terrassa, Barcelona, Spain 2: Institute for Cross-Disciplinary Physics and Complex Systems, Campus Universitat de les Illes Balears, ES-07122 Palma de Mallorca, Spain 3: Air Force Research Laboratory, AFRL/EOARD, 86 Blenheim Crescent, Ruislip Middlesex HA4 7HB, United Kingdom 4: Optics and Electronics (OPTEL) Research Group, Laboratoire Matériaux Optiques, Photonique et Systemes (LMOPS), Supélec, 2 Rue Edouard Belin, FR-57070 Metz, France; Source Info: Aug2011, Vol. 84 Issue 2-B, p23838:1; Subject Term: BIFURCATION theory; Subject Term: SEMICONDUCTOR lasers; Subject Term: POLARIZATION (Nuclear physics); Subject Term: COMPUTER simulation; Subject Term: NUMERICAL analysis; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1103/PhysRevA.84.023838 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66736781&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Friedman, Jeffrey F. AU - Viggiano, Albert A. AU - Maergoiz, Anatol I. AU - Troe, Jürgen T1 - Pressure and temperature dependence of dissociative and non-dissociative electron attachment to CF3: Experiments and kinetic modeling. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2011/08/07/ VL - 135 IS - 5 M3 - Article SP - 054306 PB - American Institute of Physics SN - 00219606 AB - The kinetics of electron attachment to CF3 as a function of temperature (300-600 K) and pressure (0.75-2.5 Torr) were studied by variable electron and neutral density attachment mass spectrometry exploiting dissociative electron attachment to CF3Br as a radical source. Attachment occurs through competing dissociative (CF3 + e- → CF2 + F-) and non-dissociative channels (CF3 + e- → CF3-). The rate constant of the dissociative channel increases strongly with temperature, while that of the non-dissociative channel decreases. The rate constant of the non-dissociative channel increases strongly with pressure, while that of the dissociative channel shows little dependence. The total rate constant of electron attachment increases with temperature and with pressure. The system is analyzed by kinetic modeling in terms of statistical theory in order to understand its properties and to extrapolate to conditions beyond those accessible in the experiment. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISSOCIATION (Chemistry) KW - PRESSURE KW - TEMPERATURE effect KW - FLUORIDES KW - CHEMICAL kinetics KW - MASS spectrometry KW - STATISTICAL physics N1 - Accession Number: 63882739; Shuman, Nicholas S. 1 Miller, Thomas M. 1 Friedman, Jeffrey F. 1 Viggiano, Albert A. 1 Maergoiz, Anatol I. 2 Troe, Jürgen 2,3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Avenue SE, Bldg 570, Kirtland Air Force Base, New Mexico 87117-5776, 2: Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, 3: Max-Planck-Institut für biophysikalische Chemie, Am Fassberg 11, D-37077 Göttingen,; Source Info: 8/7/2011, Vol. 135 Issue 5, p054306; Subject Term: DISSOCIATION (Chemistry); Subject Term: PRESSURE; Subject Term: TEMPERATURE effect; Subject Term: FLUORIDES; Subject Term: CHEMICAL kinetics; Subject Term: MASS spectrometry; Subject Term: STATISTICAL physics; Number of Pages: 10p; Illustrations: 1 Chart, 11 Graphs; Document Type: Article L3 - 10.1063/1.3614471 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=63882739&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shen, Lixin AU - Suter, Bruce W. T1 - Eigengaps for hub-dominant matrices. JO - Applicable Analysis JF - Applicable Analysis Y1 - 2011/08// VL - 90 IS - 8 M3 - Article SP - 1227 EP - 1242 SN - 00036811 AB - Hub-dominant matrices are natural extensions of hub matrices. In this article we study eigengaps of the Gram matrix associated with a hub-dominant matrix. A class of hub-dominant matrices is then constructed by using equiangular tight frames. [ABSTRACT FROM AUTHOR] AB - Copyright of Applicable Analysis is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATRIX norms KW - INNER product spaces KW - MIMO systems KW - BEAMFORMING KW - WIRELESS communication systems KW - MATHEMATICAL analysis KW - SYMMETRIC matrices KW - arrowhead matrices KW - eigengaps KW - equiangular tight frames KW - hub matrices N1 - Accession Number: 62597414; Shen, Lixin 1 Suter, Bruce W. 2; Affiliation: 1: Department of Mathematics, Syracuse University, Syracuse, NY 13244, USA 2: Air Force Research Laboratory, Rome, NY 13441-4505, USA; Source Info: Aug2011, Vol. 90 Issue 8, p1227; Subject Term: MATRIX norms; Subject Term: INNER product spaces; Subject Term: MIMO systems; Subject Term: BEAMFORMING; Subject Term: WIRELESS communication systems; Subject Term: MATHEMATICAL analysis; Subject Term: SYMMETRIC matrices; Author-Supplied Keyword: arrowhead matrices; Author-Supplied Keyword: eigengaps; Author-Supplied Keyword: equiangular tight frames; Author-Supplied Keyword: hub matrices; NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 16p; Document Type: Article L3 - 10.1080/00036810903517571 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62597414&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mandeville, W. AU - Shaffer, M. AU - Lu, Yalin AU - O'Keefe, D. AU - Knize, R. T1 - Microstructured silicon created with a nanosecond neodymium-doped yttrium aluminum garnet laser. JO - Applied Physics A: Materials Science & Processing JF - Applied Physics A: Materials Science & Processing Y1 - 2011/08// VL - 104 IS - 2 M3 - Article SP - 755 EP - 758 PB - Springer Science & Business Media B.V. SN - 09478396 AB - We produce microstructured silicon using frequency doubled, nanosecond Nd:YAG pulses in SF gas. The micro-penitentes formed are up to 20 μm tall with a sulfur concentration of 0.5% near the surface. The infrared absorption is increased to near unity and extends well below the original bandgap far into the infrared. These data are similar to results reported by others using more complicated and less economical femtosecond titanium sapphire and picosecond and nanosecond excimer lasers. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics A: Materials Science & Processing is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON KW - MICROSTRUCTURE KW - ND-YAG lasers KW - ENERGY gaps (Physics) KW - EXCIMER lasers KW - ULTRASHORT laser pulses KW - FEMTOSECOND lasers KW - INFRARED spectroscopy N1 - Accession Number: 62614572; Mandeville, W. 1; Email Address: jody@mitre.org Shaffer, M. 2; Email Address: michael.shaffer.ctr@usafa.edu Lu, Yalin 2 O'Keefe, D. 2 Knize, R. 2; Affiliation: 1: The MITRE Corporation, 1155 Academy Park Loop Colorado Springs 80910 USA 2: United States Air Force Academy, 2354 Fairchild Drive USAFA 80840 USA; Source Info: Aug2011, Vol. 104 Issue 2, p755; Subject Term: SILICON; Subject Term: MICROSTRUCTURE; Subject Term: ND-YAG lasers; Subject Term: ENERGY gaps (Physics); Subject Term: EXCIMER lasers; Subject Term: ULTRASHORT laser pulses; Subject Term: FEMTOSECOND lasers; Subject Term: INFRARED spectroscopy; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1007/s00339-011-6346-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62614572&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coletta, Damon T1 - Scholarship on Strategic Studies and Civil-Military Relations: Is American Politics the Neglected 'Poor Relation'? JO - Forum (2194-6183) JF - Forum (2194-6183) Y1 - 2011/08// VL - 9 IS - 3 M3 - Article SP - 1 EP - 14 SN - 21946183 AB - The resurgence of American civil-military relations scholarship over the past twenty years has been led by political scientists from the subfield of International Relations and American military sociologists. Samuel Huntington's seminal work, The Soldier and the State (1957), laid the foundation for considering civil-military affairs as a major influence on sound strategic policy.By recommending autonomy for a separate sphere of military operations, it also threw down the gauntlet for structuring a cohesive society that could encompass both liberal values and the military profession. To this point the political science subfield of American Politics has remained aloof from the fray. Were American Politics to engage civil-military relations in earnest, there would likely follow an important recasting of civil-military relations scholarship, with greater emphasis on the fluidity of institutional patterns and the kind of political concessions required from all parties—executive, legislative, and military—to maintain healthy civil-military relations under the Constitutional separation of powers. [ABSTRACT FROM AUTHOR] AB - Copyright of Forum (2194-6183) is the property of De Gruyter and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CIVIL-military relations KW - POLITICAL science -- Study & teaching KW - SEPARATION of powers KW - STUDY & teaching KW - UNITED States KW - American institutions KW - American politics KW - civil-military relations KW - strategic studies KW - HUNTINGTON, Samuel P., 1927-2008 KW - SOLDIER & the State: The Theory & Politics of Civil-Military Relations, The (Book) N1 - Accession Number: 70050365; Coletta, Damon 1; Affiliation: 1: United States Air Force Academy; Source Info: 2011, Vol. 9 Issue 3, preceding p1; Subject Term: CIVIL-military relations; Subject Term: POLITICAL science -- Study & teaching; Subject Term: SEPARATION of powers; Subject Term: STUDY & teaching; Subject Term: UNITED States; Author-Supplied Keyword: American institutions; Author-Supplied Keyword: American politics; Author-Supplied Keyword: civil-military relations; Author-Supplied Keyword: strategic studies; Reviews & Products: SOLDIER & the State: The Theory & Politics of Civil-Military Relations, The (Book); People: HUNTINGTON, Samuel P., 1927-2008; Number of Pages: 16p; Document Type: Article L3 - 10.2202/1540-8884.1459 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70050365&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McKinley, R. Andy AU - McIntire, Lindsey K. AU - Schmidt, Regina AU - Repperger, Daniel W. AU - Caldwell, John A. T1 - Evaluation of Eye Metrics as a Detector of Fatigue. JO - Human Factors JF - Human Factors Y1 - 2011/08// VL - 53 IS - 4 M3 - Article SP - 403 EP - 414 SN - 00187208 AB - Objectives: This study evaluated oculometrics as a detector of fatigue in Air Force–relevant tasks after sleep deprivation. Using the metrics of total eye closure duration (PERCLOS) and approximate entropy (ApEn), the relation between these eye metrics and fatigue-induced performance decrements was investigated.Background: One damaging effect to the successful outcome of operational military missions is that attributed to sleep deprivation-induced fatigue. Consequently, there is interest in the development of reliable monitoring devices that can assess when an operator is overly fatigued.Method: Ten civilian participants volunteered to serve in this study. Each was trained on three performance tasks: target identification, unmanned aerial vehicle landing, and the psychomotor vigilance task (PVT). Experimental testing began after 14 hr awake and continued every 2 hr until 28 hr of sleep deprivation was reached.Results: Performance on the PVT and target identification tasks declined significantly as the level of sleep deprivation increased. These performance declines were paralleled more closely by changes in the ApEn compared to the PERCLOS measure.Conclusion: The results provide evidence that the ApEn eye metric can be used to detect fatigue in relevant military aviation tasks.Application: Military and commercial operators could benefit from an alertness monitoring device. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE KW - SLEEP deprivation KW - EYE -- Movements KW - WAKEFULNESS KW - AIR forces KW - MILITARY missions KW - alertness KW - eye tracker KW - fatigue KW - monitoring device KW - sleep deprivation N1 - Accession Number: 63248876; McKinley, R. Andy 1 McIntire, Lindsey K. 2 Schmidt, Regina 3 Repperger, Daniel W. 3 Caldwell, John A. 4; Affiliation: 1: Air Force Research Laboratory, Dayton, Ohio Andy.McKinley@wpafb.af.mil 2: Infoscitex, Inc. 3: Air Force Research Laboratory, Dayton, Ohio 4: Archinoetics; Source Info: Aug2011, Vol. 53 Issue 4, p403; Subject Term: FATIGUE; Subject Term: SLEEP deprivation; Subject Term: EYE -- Movements; Subject Term: WAKEFULNESS; Subject Term: AIR forces; Subject Term: MILITARY missions; Author-Supplied Keyword: alertness; Author-Supplied Keyword: eye tracker; Author-Supplied Keyword: fatigue; Author-Supplied Keyword: monitoring device; Author-Supplied Keyword: sleep deprivation; Number of Pages: 12p; Document Type: Article L3 - 10.1177/0018720811411297 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=63248876&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, Kristopher T. T1 - Truncation-Error Reduction in Spherical Near-Field Scanning Using Slepian Sequences: Formulation for Scalar Waves. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2011/08// VL - 59 IS - 8 M3 - Article SP - 2813 EP - 2823 SN - 0018926X AB - We discuss the error that results when the far field is reconstructed from spatially truncated near-field samples and present an effective mitigation technique based on the Slepian sequence for acoustic spherical near-field scanning. We show that the truncation error is inevitable whenever the far field is reconstructed using the classical near-field-to-far-field transformation. After discussing the Slepian sequence for a truncated spherical surface and its analytic and numerical properties, we apply it to expand truncated NF samples and derive the near-field-to-far-field transformation of the resulting expansion coefficients, from which the far field can be computed. We demonstrate the efficacy of this transformation by applying it to near-field scanning for bistatic scattering from a sphere and radiation from a current distribution. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEAR-field microscopy KW - ANTENNAS (Electronics) KW - SEQUENCES (Mathematics) KW - ERROR analysis (Mathematics) KW - NOISE -- Measurement KW - SCATTERING (Physics) KW - BISTATIC radar KW - Antenna measurement KW - Antenna measurements KW - bistatic scattering KW - Finite wordlength effects KW - Government KW - near-field scanning KW - near-field-to-far-field transformation KW - Noise measurement KW - Probes KW - Scattering KW - Slepian sequence KW - Surface waves KW - truncation error N1 - Accession Number: 63987958; Kim, Kristopher T. 1; Affiliation: 1: Electromagnetics Division, Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, MA, USA; Source Info: Aug2011, Vol. 59 Issue 8, p2813; Subject Term: NEAR-field microscopy; Subject Term: ANTENNAS (Electronics); Subject Term: SEQUENCES (Mathematics); Subject Term: ERROR analysis (Mathematics); Subject Term: NOISE -- Measurement; Subject Term: SCATTERING (Physics); Subject Term: BISTATIC radar; Author-Supplied Keyword: Antenna measurement; Author-Supplied Keyword: Antenna measurements; Author-Supplied Keyword: bistatic scattering; Author-Supplied Keyword: Finite wordlength effects; Author-Supplied Keyword: Government; Author-Supplied Keyword: near-field scanning; Author-Supplied Keyword: near-field-to-far-field transformation; Author-Supplied Keyword: Noise measurement; Author-Supplied Keyword: Probes; Author-Supplied Keyword: Scattering; Author-Supplied Keyword: Slepian sequence; Author-Supplied Keyword: Surface waves; Author-Supplied Keyword: truncation error; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TAP.2011.2158968 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=63987958&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Armanious, Miena AU - Tyo, J. AU - Skipper, Michael AU - Abdalla, Michael AU - Prather, William AU - Gruen, Greggory T1 - Electrostatic field management and electrodynamic modeling of switched quarter-wave oscillators. JO - IEEE Transactions on Dielectrics & Electrical Insulation JF - IEEE Transactions on Dielectrics & Electrical Insulation Y1 - 2011/08// VL - 18 IS - 4 M3 - Article SP - 1054 EP - 1065 SN - 10709878 AB - Quarter-wave switched oscillators (SWOs), sometimes referred to as MATRIX oscillators, are an important technology for the generation of high-power, moderate bandwidth (mesoband) waveforms. The use of SWOs in high power microwave sources has been discussed for the past 10 years but a detailed discussion of the design of this type of oscillators for particular waveforms has been lacking. In this work a design methodology for a realization of SWOs is developed. A key element in the design of SWOs is the self-breakdown switch, which is created by a large electric field. In order for the switch to close as expected from the design, it is essential to manage the electrostatic field distribution inside the oscillator during the charging time. This enforces geometric constraints on the shape of the conductors inside the oscillator. At the same time, the electrodynamic operation of the system is dependent on the geometry of the structure. In order to generate a geometry that satisfies both the electrostatic and electrodynamic constraints, a new approach is developed to generate this geometry using iterative solutions to the 2-D static Laplace equation, subject to a particular set of boundary conditions. These boundary conditions are manipulated to generate equipotential lines with specific dimensions that satisfy the electrodynamic constraints. Meanwhile, these equipotential lines naturally support an electrostatic field distribution that meets the requirements for the field enhancement. To study the electrodynamic aspects of SWOs, three different (but inter-related) numerical models are built. Depending on the assumptions made in each model, different information about the electrodynamic properties of the designed SWO are obtained. In addition, the agreement and consistency between the different models, validate and give confidence in the calculated results. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Dielectrics & Electrical Insulation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROSTATICS KW - ELECTRODYNAMICS KW - ELECTRIC switchgear KW - ELECTRIC oscillators KW - MATHEMATICAL models KW - ELECTRIC conductors KW - BOUNDARY value problems KW - BREAKDOWN (Electricity) KW - Conductors KW - Electrostatics KW - Geometry KW - high power electromagnetic (HPEM) sources KW - Mathematical model KW - mesoband sources KW - Oscillators KW - Shape KW - Switched oscillators KW - Switches N1 - Accession Number: 64315590; Armanious, Miena 1 Tyo, J. 1 Skipper, Michael 2 Abdalla, Michael 2 Prather, William 3 Gruen, Greggory 3; Affiliation: 1: College of Optical Sciences The University of Arizona, 1630 E University Blvd, Tucson, AZ 85721, USA 2: ASR Corporation, 7817 Bursera, NW, Albuquerque, NM 87120, USA. 3: Air Force Research Laboratory, Kirtland , NM 87117, USA; Source Info: Aug2011, Vol. 18 Issue 4, p1054; Subject Term: ELECTROSTATICS; Subject Term: ELECTRODYNAMICS; Subject Term: ELECTRIC switchgear; Subject Term: ELECTRIC oscillators; Subject Term: MATHEMATICAL models; Subject Term: ELECTRIC conductors; Subject Term: BOUNDARY value problems; Subject Term: BREAKDOWN (Electricity); Author-Supplied Keyword: Conductors; Author-Supplied Keyword: Electrostatics; Author-Supplied Keyword: Geometry; Author-Supplied Keyword: high power electromagnetic (HPEM) sources; Author-Supplied Keyword: Mathematical model; Author-Supplied Keyword: mesoband sources; Author-Supplied Keyword: Oscillators; Author-Supplied Keyword: Shape; Author-Supplied Keyword: Switched oscillators; Author-Supplied Keyword: Switches; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 335931 Current-Carrying Wiring Device Manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 335313 Switchgear and Switchboard Apparatus Manufacturing; NAICS/Industry Codes: 335315 Switchgear and switchboard, and relay and industrial control apparatus manufacturing; NAICS/Industry Codes: 335930 Wiring device manufacturing; Number of Pages: 0p; Document Type: Article L3 - 10.1109/TDEI.2011.5976095 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=64315590&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Firmino, A. AU - Grote, J. G. AU - Kajzar, F. AU - M'Peko, J.-C. AU - Pawlicka, A. T1 - DNA-based ionic conducting membranes. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/08// VL - 110 IS - 3 M3 - Article SP - 033704 PB - American Institute of Physics SN - 00218979 AB - Deoxyribonucleic acid based gel solid electrolytes were prepared and their electric properties were characterized. Their ionic conductivity is in the range of 10-4-10-5 S/cm at room temperature and increases linearly in function of temperature, obeying an Arrhenius-like relationship. The present study, combined with the literature data, suggests that the electrical conduction mechanism in these membranes involve ion motion and/or charge hopping, promoted most likely by a significant interaction between the membrane components. The good conductivity results, as found here, together with the good transparency and good adhesion to the electrodes show that the DNA-based gel polymer electrolytes are very promising materials for application in various electrochromic devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - MACROMOLECULES KW - ELECTROCHROMIC devices KW - ELECTROOPTICAL devices KW - ELECTRODES N1 - Accession Number: 64354980; Firmino, A. 1 Grote, J. G. 2 Kajzar, F. 3 M'Peko, J.-C. 4 Pawlicka, A. 1; Affiliation: 1: IQSC, Universidade de São Paulo, C.P. 780, CEP 13560-970, São Carlos-SP, 2: Air Force Research Laboratory, AFRL/RXPS, 3005 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433-7707, 3: POLITEHNICA University of Bucharest, Faculty of Applied Chemistry and Materials Science, Str. Polizu nr. 1, Bucharest, Romania & Université d'Angers, Institut des Sciences et Technologies Moléculaires d'Angers, MOLTECH Anjou - UMR CNRS 6200 4: IFSC, Universidade de São Paulo, C.P. 369, CEP 13560-970, São Carlos-SP,; Source Info: Aug2011, Vol. 110 Issue 3, p033704; Subject Term: POLYMERS; Subject Term: MACROMOLECULES; Subject Term: ELECTROCHROMIC devices; Subject Term: ELECTROOPTICAL devices; Subject Term: ELECTRODES; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1063/1.3610951 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=64354980&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tang, Wilkin AU - Shiffler, Don AU - Cartwright, Keith L. T1 - Analysis of electric field screening by the proximity of two knife-edge field emitters. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/08// VL - 110 IS - 3 M3 - Article SP - 034905 PB - American Institute of Physics SN - 00218979 AB - The electric field of two semi-infinitely wide knife-edge cathodes with arbitrary separation is calculated by using a Schwarz-Christoffel transformation. This geometry could also represent a trench (or scratch) on a flat surface. It is found that the magnitude of the electric field on the knife-edge cathodes depends strongly on the ratio h/a, where h is the height of the knife-edge cathodes and 2a is the distance between the cathodes. When h/a increases, the magnitude of the electric field on the cathode's surface decreases. This shows the screening of one cathode by another cathode; for example, keeping the height fixed and decreasing the distance between the cathodes, the field enhancement on the corner decreases. Analytic approximations for the divergent electric field in the immediate vicinity of the sharp edge are derived for the cases where h/a>>1, and h/a<1. These results lead to insight on the relationship of the density of field emitter in field emitting arrays and field emission from rough surfaces. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC fields KW - FIELD theory (Physics) KW - ELECTROMAGNETIC fields KW - CATHODES KW - FIELD emission N1 - Accession Number: 64354882; Tang, Wilkin 1 Shiffler, Don 1 Cartwright, Keith L. 1; Affiliation: 1: Air Force Research Laboratory/Directed Energy Directorate, Albuquerque, New Mexico 87117,; Source Info: Aug2011, Vol. 110 Issue 3, p034905; Subject Term: ELECTRIC fields; Subject Term: FIELD theory (Physics); Subject Term: ELECTROMAGNETIC fields; Subject Term: CATHODES; Subject Term: FIELD emission; Number of Pages: 5p; Document Type: Article L3 - 10.1063/1.3615846 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=64354882&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carney, Carmen M. AU - Parthasarathy, Triplicane A. AU - Cinibulk, Michael K. T1 - Oxidation Resistance of Hafnium Diboride Ceramics with Additions of Silicon Carbide and Tungsten Boride or Tungsten Carbide. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2011/08// VL - 94 IS - 8 M3 - Article SP - 2600 EP - 2607 PB - Wiley-Blackwell SN - 00027820 AB - Dense samples of HfB2-SiC, HfB2-SiC-WC, and HfB2-SiC-WB were prepared by field-assisted sintering. The WB and WC additives were incorporated by solid solution into the HfB2 and the HfC that formed during sintering. Oxidation of the samples was studied using isothermal furnace oxidation between 1600° and 2000°C. Sample microstructure and chemistry before and after oxidation were analyzed by scanning electron microscopy and X-ray diffraction. The addition of WC and WB did not alter oxidation kinetics of the baseline HfB2-SiC composition below 1800°C; however, at 2000°C, HfB2-SiC-WC and HfB2-SiC-WB had oxide scales that were 30% thinner than the oxide scale of HfB2-SiC. It is believed that WC and WB promoted liquid-phase densification of the HfO2 scale, thereby reducing the path of oxygen ingress, during oxidation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXIDATION KW - HAFNIUM compounds KW - CERAMICS KW - SILICON carbide KW - TUNGSTEN carbide-cobalt alloys KW - MICROSTRUCTURE KW - SCANNING electron microscopy N1 - Accession Number: 64319089; Carney, Carmen M. 1,2; Email Address: carmen.carney@wpafb.af.mil Parthasarathy, Triplicane A. 1,2 Cinibulk, Michael K. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7817 2: UES Inc., Dayton, Ohio 45432; Source Info: Aug2011, Vol. 94 Issue 8, p2600; Subject Term: OXIDATION; Subject Term: HAFNIUM compounds; Subject Term: CERAMICS; Subject Term: SILICON carbide; Subject Term: TUNGSTEN carbide-cobalt alloys; Subject Term: MICROSTRUCTURE; Subject Term: SCANNING electron microscopy; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 8p; Illustrations: 4 Black and White Photographs, 3 Charts, 3 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2011.04462.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=64319089&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - David M. Drab AU - Marcin Smiglak AU - Julia L. Shamshina AU - Steven P. Kelley AU - Stefan Schneider AU - Tommy W. Hawkins AU - Robin D. Rogers T1 - Synthesis of N-cyanoalkyl-functionalized imidazolium nitrate and dicyanamide ionic liquids with a comparison of their thermal properties for energetic applicationsCCDC reference numbers 801102–801105. For crystallographic data in CIF or other electronic format see DOI: 10.1039/c0nj00889c JO - New Journal of Chemistry JF - New Journal of Chemistry Y1 - 2011/08// VL - 35 IS - 8 M3 - Article SP - 1701 EP - 1717 SN - 11440546 AB - The synthesis of 10 N-alkyl-N-cyanoalkyl-functionalized imidazolium (N-methyl- and N-butyl-N-((CH2)nCN)imidazolium; n= 1–4) nitrate and 11 N-alkyl-N-cyanoalkyl-functionalized imidazolium (N-methyl-N-((CH2)nCN)imidazolium; n= 1–6, N-(2-cyanoethyl)-N-((CH2)nCN)imidazolium; n= 1,3–6) dicyanamide salts was achieved via N-alkylation of substituted imidazoles with commercially available haloalkylnitriles followed by anion exchange. Based on their observed melting points, all dicyanamide salts and all but one nitrate salt (1-cyanomethyl-3-methylimidazolium nitrate) had melting points <100 °C, as did 13 of the 17 halide precursors also reported here. Differential scanning calorimetry data indicated that melting points decreased by increasing the N-alkyl or N-cyanoalkyl chain length or by exchanging with the dicyanamide anion, which produced the lowest melting points in comparison to analogous halide or nitrate salts. Thermogravimetric analyses indicated that thermal stability increased for longer N-cyanoalkyl substituent lengths and decreased significantly for nitrates and more so for dicyanamides bearing short-chain N-cyanoalkyl substituents (e.g., N-cyanomethyl, N-(1-cyanoethyl), and N-(2-cyanoethyl)) in comparison to halide precursors. Furthermore, for many of the N-cyanoalkyl-substituted salts (especially the dicyanamides), there was a significant production of thermally-stable char – presumably due to by-products formed from the reaction of either N-cyanoalkyl substituents, dicyanamide anion, or both, which resulted in thermally-stable polymers or cycles. [ABSTRACT FROM AUTHOR] AB - Copyright of New Journal of Chemistry is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMIDAZOLES KW - ORGANIC synthesis (Chemistry) KW - IONIC liquids KW - THERMAL properties KW - ION exchange (Chemistry) KW - CALORIMETRY KW - THERMOGRAVIMETRY KW - POLYMERS N1 - Accession Number: 63248100; David M. Drab 1 Marcin Smiglak 1 Julia L. Shamshina 1 Steven P. Kelley 1 Stefan Schneider 2 Tommy W. Hawkins 2 Robin D. Rogers 1; Affiliation: 1: Department of Chemistry and Center for Green Manufacturing 2: Air Force Research Laboratory; Source Info: Aug2011, Vol. 35 Issue 8, p1701; Subject Term: IMIDAZOLES; Subject Term: ORGANIC synthesis (Chemistry); Subject Term: IONIC liquids; Subject Term: THERMAL properties; Subject Term: ION exchange (Chemistry); Subject Term: CALORIMETRY; Subject Term: THERMOGRAVIMETRY; Subject Term: POLYMERS; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 17p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=63248100&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gruneisen, Mark T. AU - Dymale, Raymond C. AU - Stoltenberg, Kurt E. AU - Steinhoff, Nicholas T1 - Optical vortex discrimination with a transmission volume hologram. JO - New Journal of Physics JF - New Journal of Physics Y1 - 2011/08// VL - 13 IS - 8 M3 - Article SP - 1 EP - 14 SN - 13672630 AB - Transmissive volume holograms are considered as mode-selective optical elements for the de-multiplexing and detecting of optical vortex modes according to the topological charge or mode number. Diffraction of vortex modes by a fundamental mode hologram is modeled using a physical optics model that treats the volume hologram as an angle-dependent transfer function. Diffracted irradiance profiles and diffraction efficiencies are calculated numerically as a function of the incident mode number. The results of the model are compared with experimental results obtained with volume holograms of fundamental and higher-order vortex modes. When considered as a function of detuning between the incident and recorded mode numbers, the measured diffraction efficiencies are found to be invariant with respect to the recorded mode number, provided that the order difference remains unchanged, and in close agreement with the predictions of the model. Measurements are made with a 1.3mm thick permanent photo-thermo-refractive glass hologram and a 9mm thick re-writable photorefractive lithium niobate hologram. A liquid-crystal spatial light modulator generates the vortex modes used to record and read the holograms. The results indicate that a simple volume hologram can discriminate between vortex modes; however, adjacent mode discrimination with low crosstalk would require a very thick hologram. Furthermore, broadening of the vortex angular spectrum, due to diffraction at a finite aperture, can adversely affect diffraction efficiencies. [ABSTRACT FROM AUTHOR] AB - Copyright of New Journal of Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HOLOGRAPHY KW - OPTICAL diffraction KW - VORTEX motion KW - NIOBATES KW - ANGULAR distribution (Nuclear physics) N1 - Accession Number: 67336121; Gruneisen, Mark T. 1 Dymale, Raymond C. 2 Stoltenberg, Kurt E. 2 Steinhoff, Nicholas 3; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, NM 87117, USA 2: Boeing Company, PO Box 5670, Albuquerque, NM 87185, USA 3: Optical Sciences Company, 1341 S Sunkist St., Anaheim, CA 92806, USA; Source Info: Aug2011, Vol. 13 Issue 8, p1; Subject Term: HOLOGRAPHY; Subject Term: OPTICAL diffraction; Subject Term: VORTEX motion; Subject Term: NIOBATES; Subject Term: ANGULAR distribution (Nuclear physics); Number of Pages: 14p; Document Type: Article L3 - 10.1088/1367-2630/13/8/083030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67336121&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Albert, J. M. T1 - The whistler mode refractive index as a function of gyrofrequency. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2011/08// VL - 18 IS - 8 M3 - Article SP - 084503 PB - American Institute of Physics SN - 1070664X AB - The refractive index for a constant-frequency whistler mode wave in an electron-proton plasma is considered as a function of position, through the local gyrofrequencies Ωe,i. The full cold plasma dispersion relation is used. The wave frequency can take any value up to the smaller of Ωe and the plasma frequency ωpe, but ωpe is allowed to take any fixed value, as is the wavenormal angle. It is rigorously established that the refractive index is a decreasing function of Ωe. One application of this is to finding locations of Landau and cyclotron resonances, to evaluate the effects of whistler mode waves on radiation belt electrons. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA frequencies KW - LOW temperature plasmas KW - REFRACTIVE index KW - DISPERSION relations KW - PLASMA diffusion KW - CYCLOTRON resonance KW - RADIATION belts N1 - Accession Number: 65108173; Albert, J. M. 1; Affiliation: 1: Air Force Research Laboratory/RVBX, Kirtland AFB, New Mexico 87117,; Source Info: Aug2011, Vol. 18 Issue 8, p084503; Subject Term: PLASMA frequencies; Subject Term: LOW temperature plasmas; Subject Term: REFRACTIVE index; Subject Term: DISPERSION relations; Subject Term: PLASMA diffusion; Subject Term: CYCLOTRON resonance; Subject Term: RADIATION belts; Number of Pages: 4p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.3622653 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65108173&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lu, Y.C. AU - Fulcher, J.T. AU - Tandon, G.P. AU - Foster, D.C. AU - Baur, J.W. T1 - Microscale thermomechanical characterization of environmentally conditioned shape memory polymers JO - Polymer Testing JF - Polymer Testing Y1 - 2011/08// VL - 30 IS - 5 M3 - Article SP - 563 EP - 570 SN - 01429418 AB - Abstract: Shape memory polymers (SMPs) are an emerging class of active polymers that have dual-shape capability and are, therefore, candidate materials for reconfigurable structures. However, the durability of SMPs has not been fully investigated to ensure they function properly in relevant environments. In this study, epoxy-based SMPs were conditioned separately in simulated service environments designed to be reflective of anticipated performance requirements, namely, (1) exposure to UV radiation for 125 cycles, (2) immersion in lube oil at ambient temperature, (3) immersion in water at 49 °C. A novel high-temperature indentation method was used to evaluate the shape recovery ability and mechanical properties of the conditioned SMPs. Results show that environmentally conditioned SMPs generally exhibit decreased glass transition temperatures and higher moduli and strain rate sensitivities in comparison to an unconditioned one. Environmental conditioning affects the shape recovery abilities of the SMPs if the recovery temperatures are set low. In particular, the UV exposed and water immersed SMPs exhibit noticeable lower shape recovery ratios compared to the unconditioned material. When the recovery temperature is above Tg, the material’s ability to regain shape remains relatively unchanged with conditioning. [Copyright &y& Elsevier] AB - Copyright of Polymer Testing is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Thermomechanical properties KW - SMART materials KW - EPOXY compounds KW - HIGH temperatures KW - ENVIRONMENTAL engineering KW - WATER immersion KW - ULTRAVIOLET radiation KW - Durability KW - Environmental conditioning KW - High temperature nanoindentation KW - Shape memory polymer N1 - Accession Number: 61175570; Lu, Y.C. 1; Email Address: chlu@engr.uky.edu Fulcher, J.T. 1 Tandon, G.P. 2,3 Foster, D.C. 2 Baur, J.W. 2; Affiliation: 1: University of Kentucky, Department of Mechanical Engineering, Lexington, KY, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXBC, Wright Patterson AFB, OH, USA 3: University of Dayton Research Ins., Dayton, OH, USA; Source Info: Aug2011, Vol. 30 Issue 5, p563; Subject Term: METALS -- Thermomechanical properties; Subject Term: SMART materials; Subject Term: EPOXY compounds; Subject Term: HIGH temperatures; Subject Term: ENVIRONMENTAL engineering; Subject Term: WATER immersion; Subject Term: ULTRAVIOLET radiation; Author-Supplied Keyword: Durability; Author-Supplied Keyword: Environmental conditioning; Author-Supplied Keyword: High temperature nanoindentation; Author-Supplied Keyword: Shape memory polymer; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.polymertesting.2011.04.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61175570&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zalar, Peter AU - Kamkar, Daniel AU - Naik, Rajesh AU - Ouchen, Fahima AU - Grote, James G. AU - Bazan, Guillermo C. AU - Nguyen, Thuc-Quyen T1 - DNA Electron Injection Interlayers for Polymer Light-Emitting Diodes. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2011/07/27/ VL - 133 IS - 29 M3 - Article SP - 11010 EP - 11013 SN - 00027863 AB - Introduction of a DNA interlayer adjacent to an Al cathode in a polymer light-emitting diode leads to lower turn-on voltages, higher luminance efficiencies, and characteristics comparable to those observed using a Ba electrode. The DNA serves to improve electron injection and also functions as a hole-blocking layer. The temporal characteristics of the devices are consistent with an interfacial dipole layer adjacent to the electrode being responsible for the reduction of the electron injection barrier. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DNA KW - ELECTRONS KW - LIGHT emitting diodes KW - CATHODES KW - ELECTRODES KW - ELECTRIC potential N1 - Accession Number: 63892274; Zalar, Peter 1 Kamkar, Daniel 1 Naik, Rajesh 2 Ouchen, Fahima 2 Grote, James G. 2 Bazan, Guillermo C. 1; Email Address: bazan@chem.ucsb.edu Nguyen, Thuc-Quyen 1; Email Address: quyen@chem.ucsb.edu; Affiliation: 1: Center for Polymers and Organic Solids, Department of Physics, and Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States; Source Info: 7/27/2011, Vol. 133 Issue 29, p11010; Subject Term: DNA; Subject Term: ELECTRONS; Subject Term: LIGHT emitting diodes; Subject Term: CATHODES; Subject Term: ELECTRODES; Subject Term: ELECTRIC potential; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1021/ja201868d UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=63892274&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jianbo Liu AU - Chambreau, Steven D. AU - Vaghjiani, Ghanshyam L. T1 - Thermal Decomposition of 1,5-Dinitrobiuret (DNB): Direct Dynamics Trajectory Simulations and Statistical Modeling. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2011/07/21/ VL - 115 IS - 28 M3 - Article SP - 8064 EP - 8072 SN - 10895639 AB - A large set of quasi-classical, direct dynamics trajectory simulations were performed for decomposition of 1,5-dinitrobiuret (DNB) over a temperature range from 4000 to 6000 K, aimed at providing insight into DNB decomposition mechanisms. The trajectories revealed various decomposition paths and reproduced the products (including HNCO, N2O, NO2, NO, and water) observed in DNB pyrolysis experiments. Using trajectory results as a guide, structures of intermediate complexes and transition states that might be important for decomposition were determined using density functional theory calculations. Rice-Ramsperger--Kassel--Marcus (RRKM) theory was then utilized to examine behaviors of the energized reactant and intermediates and to determine unimolecular rates for crossing various transition states. According to RRKM predictions, the dominant initial decomposition path of energized DNB corresponds to elimination of HNNO2H via a conceited mechanism where the molecular decomposition is accompanied with intramolecular H-atom transfer from the central nitrogen to the terminal nitro oxygen. Other important paths correspond to elimination of NO2 and H2NNO2. NO2 elimination is a simple N-N bond scission process. Formation and elimination of nitramide is, however, dynamically complicated, requiring twisting a - NHNO2 group out of the molecular plane, followed by an intramolecular reaction to form nitramide before its elimination. These two paths become significant at temperatures above 1500 K, accounting for > 17% of DNB decomposition at 2000 K. This work demonstrates that quasi-classical trajectory simulations, in conjunction with electronic structure and RRKM calculations, are able to extract mechanisms, kinetics, dynamics and product branching ratios for the decomposition of complex energetic molecules and to predict how they vary with decomposition temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UNIMOLECULAR decomposition KW - DYNAMICS KW - TRAJECTORIES (Mechanics) KW - PYROLYSIS KW - NITRAMIDE KW - DENSITY functionals N1 - Accession Number: 66789778; Jianbo Liu 1,2 Chambreau, Steven D. 3 Vaghjiani, Ghanshyam L. 4; Affiliation: 1: Department of Chemistry and Biochemistry, Queens College 2: Graduate Center, City University of New York, 65-30 Kissena Boulevard, Flushing, New York 11367, United States 3: ERC, Inc. 4: Air Force Research Laboratory, AFRL/RZSP, Propulsion Directorate, Edwards Air Force Base, California 93524, United States; Source Info: Jul2011, Vol. 115 Issue 28, p8064; Subject Term: UNIMOLECULAR decomposition; Subject Term: DYNAMICS; Subject Term: TRAJECTORIES (Mechanics); Subject Term: PYROLYSIS; Subject Term: NITRAMIDE; Subject Term: DENSITY functionals; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66789778&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Atapour, M. AU - Pilchak, A.L. AU - Frankel, G.S. AU - Williams, J.C. T1 - Corrosion behavior of β titanium alloys for biomedical applications JO - Materials Science & Engineering: C JF - Materials Science & Engineering: C Y1 - 2011/07/20/ VL - 31 IS - 5 M3 - Article SP - 885 EP - 891 SN - 09284931 AB - Abstract: The corrosion behavior of biocompatible β titanium alloys Ti–13Mo–7Zr–3Fe (TMZF) and Ti–35Nb–7Zr–5Ta (TiOsteum) was investigated in 0.9% NaCl and 5M HCl solutions. Extra-low-interstitial Ti–6Al–4V, which is also a candidate material for biomedical applications, was studied for comparison. The as-received TiOsteum and TMZF alloys exhibited single-phase β and α+β microstructures, respectively, so the latter was also investigated in the solutionized and quenched condition. In 0.9% NaCl solution, all three alloys exhibited spontaneous passivity and very low corrosion rates. Ti–6Al–4V and the as-received TMZF exhibited active-passive transitions in 5M HCl whereas TiOsteum and TMZF in the metastable β condition showed spontaneous passivity. Potentiodynamic polarization tests, weight loss and immersion tests revealed that TiOsteum exhibited the best corrosion resistance in 5M HCl. Analysis of surfaces of the corroded specimens indicated that the α/β phase boundaries were preferential sites for corrosion in Ti–6Al–4V while the β phase was preferentially attacked in the two-phase TMZF. The performance of the alloys in corrosive environment was discussed in terms of the volume fraction of the constituent phases and partitioning of alloying elements between these phases. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: C is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORROSION resistant alloys KW - TITANIUM alloys KW - BIOMEDICAL materials KW - SOLUTION (Chemistry) KW - MICROSTRUCTURE KW - PHASE transformations (Physics) KW - METALLOGRAPHIC specimens KW - MOLECULAR volume KW - Corrosion KW - Ti alloys N1 - Accession Number: 60663203; Atapour, M. 1,2 Pilchak, A.L. 1,3,4 Frankel, G.S. 1; Email Address: frankel.10@osu.edu Williams, J.C. 1; Affiliation: 1: Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, United States 2: Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran 3: Air Force Research Laboratory, Materials and Manufacturing Directorate/RXLM, Wright Patterson Air Force Base, OH 45433, United States 4: Universal Technology Corporation, Dayton OH 45432, United States; Source Info: Jul2011, Vol. 31 Issue 5, p885; Subject Term: CORROSION resistant alloys; Subject Term: TITANIUM alloys; Subject Term: BIOMEDICAL materials; Subject Term: SOLUTION (Chemistry); Subject Term: MICROSTRUCTURE; Subject Term: PHASE transformations (Physics); Subject Term: METALLOGRAPHIC specimens; Subject Term: MOLECULAR volume; Author-Supplied Keyword: Corrosion; Author-Supplied Keyword: Ti alloys; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.msec.2011.02.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60663203&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gothard, N. W. AU - Tritt, T. M. AU - Spowart, J. E. T1 - Figure of merit enhancement in bismuth telluride alloys via fullerene-assisted microstructural refinement. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/07/15/ VL - 110 IS - 2 M3 - Article SP - 023706 PB - American Institute of Physics SN - 00218979 AB - Nanocomposite materials based on bismuth telluride with fullerene additions have been synthesized via ball milling and spark plasma sintering. The impact of fullerene addition upon the composites is studied with respect to both fullerene volume percentage and ball-mill duration. It is demonstrated that fullerenes can engage in significant microstructural refinement even when present in small quantities. The lattice thermal conductivity, electrical conductivity, Seebeck coefficient, and Hall coefficient are analyzed with a view to the impact of fullerene incorporation upon these properties. Fullerene-assisted microstructural refinement causes a decrease both in lattice thermal conductivity and electrical conductivity, but a corresponding increase in the Seebeck coefficient results in an enhancement in the figure of merit at low volume fractions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BISMUTH KW - TELLURIDES KW - FULLERENES KW - NANOCOMPOSITE materials KW - MICROSTRUCTURE KW - SINTERING N1 - Accession Number: 63502195; Gothard, N. W. 1 Tritt, T. M. 2 Spowart, J. E. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright Patterson AFB, Ohio 45433-7817, 2: Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634,; Source Info: Jul2011, Vol. 110 Issue 2, p023706; Subject Term: BISMUTH; Subject Term: TELLURIDES; Subject Term: FULLERENES; Subject Term: NANOCOMPOSITE materials; Subject Term: MICROSTRUCTURE; Subject Term: SINTERING; NAICS/Industry Codes: 212210 Iron Ore Mining; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.3606547 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=63502195&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abotula, Sandeep AU - Shukla, Arun AU - Chona, Ravi T1 - Dynamic constitutive behavior of Hastelloy X under thermo-mechanical loads. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2011/07/15/ VL - 46 IS - 14 M3 - Article SP - 4971 EP - 4979 PB - Springer Science & Business Media B.V. SN - 00222461 AB - n experimental investigation has been conducted to study the dynamic constitutive behavior of Hastelloy X (AMS 5754) at room and elevated temperatures under varying rates of loading. A split Hopkinson pressure bar (SHPB) apparatus was used in conjunction with an induction coil heating system for applying dynamic loads at elevated temperatures. Experiments were carried out at different temperatures ranging from room temperature (25 °C) to 1,100 °C at an average strain rate of 5000/s. Room temperature experiments were carried out at varying strain rates from 1000 to 4000/s. The results show that as the strain rate increases from quasi-static to 4000/s, the yield strength increases by approximately 50%. Also, under dynamic loading, the yield stress decreases with temperature up to 700 °C, after which it shows a peak at 900 °C before beginning to decrease again as the temperature is further increased. The Johnson-Cook model was used to predict the dynamic plastic response under varying rates of loading and at different temperatures. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL alloys KW - HIGH temperatures KW - MATERIALS -- Dynamic testing KW - HOPKINSON bars (Testing) KW - IONIC liquids KW - STRAINS & stresses (Mechanics) N1 - Accession Number: 60175439; Abotula, Sandeep 1; Email Address: sabotula@my.uri.edu Shukla, Arun 1; Email Address: shuklaa@egr.uri.edu Chona, Ravi 2; Email Address: ravi.chona@wpafb.af.mil; Affiliation: 1: Dynamic Photo Mechanics Laboratory, Department of Mechanical, Industrial & Systems Engineering, University of Rhode Island, Kingston 02881 USA 2: Structural Sciences Center, Air Vehicles Directorate, US Air Force Research Laboratory, Wright Patterson AFB 45433-7402 USA; Source Info: Jul2011, Vol. 46 Issue 14, p4971; Subject Term: NICKEL alloys; Subject Term: HIGH temperatures; Subject Term: MATERIALS -- Dynamic testing; Subject Term: HOPKINSON bars (Testing); Subject Term: IONIC liquids; Subject Term: STRAINS & stresses (Mechanics); NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 9p; Illustrations: 1 Color Photograph, 1 Diagram, 4 Charts, 8 Graphs; Document Type: Article L3 - 10.1007/s10853-011-5414-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60175439&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mattie, David R. AU - Sterner, Teresa R. T1 - Past, present and emerging toxicity issues for jet fuel JO - Toxicology & Applied Pharmacology JF - Toxicology & Applied Pharmacology Y1 - 2011/07/15/ VL - 254 IS - 2 M3 - Article SP - 127 EP - 132 SN - 0041008X AB - Abstract: The US Air Force wrote the specification for the first official hydrocarbon-based jet fuel, JP-4, in 1951. This paper will briefly review the toxicity of the current fuel, JP-8, as compared to JP-4. JP-8 has been found to have low acute toxicity with the adverse effects being slight dermal irritation and weak dermal sensitization in animals. JP-4 also has low acute toxicity with slight dermal irritation as the adverse effect. Respiratory tract sensory irritation was greater in JP-8 than in JP-4. Recent data suggest exposure to jet fuel may contribute to hearing loss. Subchronic studies for 90 days with JP-8 and JP-4 showed little toxicity with the primary effect being male rat specific hydrocarbon nephropathy. A 1-year study was conducted for JP-4. The only tumors seen were associated with the male rat specific hydrocarbon nephropathy. A number of immunosuppressive effects have been seen after exposure to JP-8. Limited neurobehavioral effects have been associated with JP-8. JP-8 is not a developmental toxicant and has little reproductive toxicity. JP-4 has not been tested for immune, neurobehavioral or reproductive endpoints. JP-8 and JP-4 were negative in mutagenicity tests but JP-4 showed an increase in unscheduled DNA synthesis. Currently, JP-8 is being used as the standard for comparison of future fuels, including alternative fuels. Emerging issues of concern with jet fuels include naphthalene content, immunotoxicity and inhalation exposure characterization and modeling of complex mixtures such as jet fuels. [Copyright &y& Elsevier] AB - Copyright of Toxicology & Applied Pharmacology is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMMUNOTOXICOLOGY KW - JET planes -- Fuel KW - KIDNEY diseases KW - RATS as laboratory animals KW - MIXTURES KW - DNA synthesis KW - REPRODUCTIVE toxicology KW - HYDROCARBONS KW - IMMUNOSUPPRESSIVE agents KW - Jet fuel KW - JP-4 KW - JP-8 KW - Toxicity N1 - Accession Number: 62559265; Mattie, David R. 1; Email Address: david.mattie@wpafb.af.mil Sterner, Teresa R. 2; Affiliation: 1: Applied Biotechnology Branch, Air Force Research Laboratory, AFRL/RHPB Bldg. 837, 2729 R Street, Wright-Patterson Air Force Base, OH 45433-5707, USA 2: HJF, AFRL/RHPB Bldg 837, 2729 R Street, Wright-Patterson Air Force Base, OH 45433-5707, USA; Source Info: Jul2011, Vol. 254 Issue 2, p127; Subject Term: IMMUNOTOXICOLOGY; Subject Term: JET planes -- Fuel; Subject Term: KIDNEY diseases; Subject Term: RATS as laboratory animals; Subject Term: MIXTURES; Subject Term: DNA synthesis; Subject Term: REPRODUCTIVE toxicology; Subject Term: HYDROCARBONS; Subject Term: IMMUNOSUPPRESSIVE agents; Author-Supplied Keyword: Jet fuel; Author-Supplied Keyword: JP-4; Author-Supplied Keyword: JP-8; Author-Supplied Keyword: Toxicity; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.taap.2010.04.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62559265&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Murnyak, George AU - Vandenberg, John AU - Yaroschak, Paul J. AU - Williams, Larry AU - Prabhakaran, Krishnan AU - Hinz, John T1 - Emerging contaminants: Presentations at the 2009 Toxicology and Risk Assessment Conference JO - Toxicology & Applied Pharmacology JF - Toxicology & Applied Pharmacology Y1 - 2011/07/15/ VL - 254 IS - 2 M3 - Article SP - 167 EP - 169 SN - 0041008X AB - Abstract: A session entitled “Emerging Contaminants” was held in April 2009 in Cincinnati, OH at the 2009 Toxicology and Risk Assessment Conference. The purpose of the session was to share information on both programmatic and technical aspects associated with emerging contaminants. Emerging contaminants are chemicals or materials that are characterized by a perceived or real threat to human health or environment, a lack of published health standards or an evolving standard. A contaminant may also be “emerging” because of the discovery of a new source, a new pathway to humans, or a new detection method or technology. The session included five speakers representing the Department of Defense (DoD), the Environmental Protection Agency (EPA), and each of the military services. The DoD created the Emerging Contaminant Directorate to proactively address environmental, health, and safety concerns associated with emerging contaminants. This session described the scan–watch–action list process, impact assessment methodology, and integrated risk management concept that DoD has implemented to manage emerging contaminants. EPA presented emerging trends in health risk assessment. Researchers made technical presentations on the status of some emerging contaminates in the assessment process (i.e. manganese, RDX, and naphthalene). [Copyright &y& Elsevier] AB - Copyright of Toxicology & Applied Pharmacology is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMERGING contaminants in water KW - CONFERENCES & conventions KW - HEALTH risk assessment KW - DEVELOPMENTAL toxicology KW - NAPHTHALENE KW - ENVIRONMENTAL health KW - ENVIRONMENTAL protection KW - CINCINNATI (Ohio) KW - OHIO KW - Emerging contaminants KW - Environment, safety and health KW - Health risk assessment N1 - Accession Number: 62559254; Murnyak, George 1; Email Address: George.murnyak@us.army.mil Vandenberg, John 2; Email Address: Vandenberg.John@epamail.epa.gov Yaroschak, Paul J. 3; Email Address: Paul.Yaroschak@osd.mil Williams, Larry 1; Email Address: Larry.williams45@us.army.mil Prabhakaran, Krishnan 4; Email Address: Krishnan.Prabhakaran.ctr@wpafb.af.mil Hinz, John 5; Email Address: John.Hinz@brooks.af.mil; Affiliation: 1: U.S. Army, Center for Health Promotion and Preventive Medicine, MD, USA 2: U.S. EPA, Office of Research and Development, National Center for Environmental Assessment-Research Triangle Park, NC, USA 3: Chemical Material and Risk Management, Office of the Deputy Under Secretary of Defense, VA, USA 4: Navy Health Research Center Detachment, Environmental Health Effects Laboratory, OH, USA 5: Air Force Research Laboratory, TX, USA; Source Info: Jul2011, Vol. 254 Issue 2, p167; Subject Term: EMERGING contaminants in water; Subject Term: CONFERENCES & conventions; Subject Term: HEALTH risk assessment; Subject Term: DEVELOPMENTAL toxicology; Subject Term: NAPHTHALENE; Subject Term: ENVIRONMENTAL health; Subject Term: ENVIRONMENTAL protection; Subject Term: CINCINNATI (Ohio); Subject Term: OHIO; Author-Supplied Keyword: Emerging contaminants; Author-Supplied Keyword: Environment, safety and health; Author-Supplied Keyword: Health risk assessment; NAICS/Industry Codes: 561920 Convention and Trade Show Organizers; NAICS/Industry Codes: 923120 Administration of Public Health Programs; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.taap.2010.10.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62559254&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Friedman, Jeffrey F. AU - Viggiano, Albert A. AU - Maeda, Satoshi AU - Morokuma, Keiji T1 - Temperature dependences of rate coefficients for electron catalyzed mutual neutralization. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2011/07/14/ VL - 135 IS - 2 M3 - Article SP - 024204 PB - American Institute of Physics SN - 00219606 AB - The flowing afterglow technique of variable electron and neutral density attachment mass spectrometry (VENDAMS) has recently yielded evidence for a novel plasma charge loss process, electron catalyzed mutual neutralization (ECMN), i.e., A+ + B- + e- → A + B + e-. Here, rate constants for ECMN of two polyatomic species (POCl3- and POCl2-) and one diatomic species (Br2-) each with two monatomic cations (Ar+and Kr+) are measured using VENDAMS over the temperature range 300 K-500 K. All rate constants show a steep negative temperature dependence, consistent with that expected for a three body process involving two ions and an electron. No variation in rate constants as a function of the cation type is observed outside of uncertainty; however, rate constants of the polyatomic anions (∼1 × 10-18 cm6 s-1 at 300 K) are measurably higher than that for Br2- [(5.5 ± 2) × 10-19 cm6 s-1 at 300 K]. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - CATALYSIS KW - NEUTRALIZATION (Chemistry) KW - AFTERGLOW (Physics) KW - MASS spectrometry KW - CATIONS KW - TEMPERATURE effect N1 - Accession Number: 62666983; Shuman, Nicholas S. 1 Miller, Thomas M. 1 Friedman, Jeffrey F. 1 Viggiano, Albert A. 1 Maeda, Satoshi 2 Morokuma, Keiji 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, 2: Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322,; Source Info: 7/14/2011, Vol. 135 Issue 2, p024204; Subject Term: ELECTRONS; Subject Term: CATALYSIS; Subject Term: NEUTRALIZATION (Chemistry); Subject Term: AFTERGLOW (Physics); Subject Term: MASS spectrometry; Subject Term: CATIONS; Subject Term: TEMPERATURE effect; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.3605631 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62666983&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Basun, S. A. AU - Cook, G. AU - Reshetnyak, V. Yu. AU - Glushchenko, A. V. AU - Evans, D. R. T1 - Dipole montent and spontaneous polarization of ferroeketric nanoparticles in a nonpolar fluid suspension. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2011/07/08/ VL - 84 IS - 2 M3 - Article SP - 24105.1 EP - 24105.8 SN - 10980121 AB - Stressed ferroelectric nanoparticles, less than 10 nm in diameter, are investigated in a nonpolar fluid. Measuring ferroelectric properties of the smallest achieved BaTiO3 ferroelectric nanoparticles allows for the determination of dipole moment and spontaneous polarization as a function of size and concentration; the results are significantly greater than in bulk BaTiO3. This is achieved by using a direct measurement of the displacement current density and either integrating over half a period or fitting the experimental results using the derivative of the Langevin function. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FERROELECTRIC crystals KW - NANOPARTICLES KW - MAGNETIC dipoles KW - POLARIZATION (Nuclear physics) KW - LANGEVIN equations N1 - Accession Number: 66700866; Basun, S. A. 1,2 Cook, G. 1,3 Reshetnyak, V. Yu. 4 Glushchenko, A. V. 5 Evans, D. R. 1; Email Address: dean.evans@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA. 2: Universal Technology Corporation, 1270 North Fairfield Road, Dayton, Ohio 45432, USA. 3: Azimuth Corporation, 4134 Linden Avenue, Suite 300, Dayton, Ohio 45432, USA. 4: National Taras Shevchenko University of Kyiv, UA-01601 Kyiv, Ukraine 5: University of Colorado at Colorado Springs, Colorado 80918, USA.; Source Info: Jul2011, Vol. 84 Issue 2, p24105.1; Subject Term: FERROELECTRIC crystals; Subject Term: NANOPARTICLES; Subject Term: MAGNETIC dipoles; Subject Term: POLARIZATION (Nuclear physics); Subject Term: LANGEVIN equations; Number of Pages: 8p; Document Type: Article L3 - 10.1103/PhysRevB.84.024105 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66700866&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eyet, Nicole AU - Shuman, Nicholas S. AU - Viggiano, Albert A. AU - Troe, Jürgen AU - Relph, Rachael A. AU - Steele, Ryan P. AU - Johnson, Mark A. T1 - The Importance of … in the Conversion of … to …: I. Kinetics Measurements and Statistical Rate Modeling. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2011/07/07/ VL - 115 IS - 26 M3 - Article SP - 7582 EP - 7590 SN - 10895639 AB - The kinetics for conversion of Due to image rights restrictions, multiple line equation(s) cannot be graphically displayed. has been investigated as a function of temperature from 150 to 400 K. In contrast to previous studies, which show that the conversion goes completely through a reaction of Due to image rights restrictions, multiple line equation(s) cannot be graphically displayed., the present results show that Due to image rights restrictions, multiple line equation(s) cannot be graphically displayed. plays an increasing role in the conversion as the temperature is lowered. Rate constants are derived for the clustering of H2O to Due to image rights restrictions, multiple line equation(s) cannot be graphically displayed. and the reactions of Due to image rights restrictions, multiple line equation(s) cannot be graphically displayed. with H2O to form Due to image rights restrictions, multiple line equation(s) cannot be graphically displayed., respectively. In addition, thermal dissociation of Due to image rights restrictions, multiple line equation(s) cannot be graphically displayed. to lose HNO2 was also found to be important. The rate constants for the clustering increase substantially with the lowering of the temperature. Flux calculations show that Due to image rights restrictions, multiple line equation(s) cannot be graphically displayed.accounts for over 99% of the conversion at 150 K and even 20% at 300 K, although it is too small to be detectable. The experimental data are complimented by modeling of the falloff curves for the clustering reactions. The modeling shows that, for many of the conditions, the data correspond to the falloff regime of third body association. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMAGE processing -- Mathematical models KW - EQUATIONS -- Numerical solutions KW - MATHEMATICAL models KW - CHEMICAL reactions KW - NEUTRON flux N1 - Accession Number: 69935648; Eyet, Nicole 1,2 Shuman, Nicholas S. 2 Viggiano, Albert A. 2; Email Address: afrl.rvb.pa@hanscom.af.mil Troe, Jürgen 3 Relph, Rachael A. 4 Steele, Ryan P. 4 Johnson, Mark A. 4; Affiliation: 1: Department of Chemistry, St. Anselm College, 100 Saint Anselm Drive, Manchester, New Hampshire 03102, United States 2: Space Vehicles Directorate, Air Force Research Laboratory, 29 Randolph Road, Hanscom Air Force Base, Massachusetts 01731-3010, United States 3: Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States 4: Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, and Max-Planck-Institut für Biophysikalische Chemie, D-37077 Göttingen, Germany; Source Info: Jul2011, Vol. 115 Issue 26, p7582; Subject Term: IMAGE processing -- Mathematical models; Subject Term: EQUATIONS -- Numerical solutions; Subject Term: MATHEMATICAL models; Subject Term: CHEMICAL reactions; Subject Term: NEUTRON flux; NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 812922 One-Hour Photofinishing; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69935648&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, C. H. AU - Knutson, S. J. AU - Shen, Y. AU - Wheeler, R. A. AU - Horwath, J. C. AU - Barnes, P. N. T1 - The effect of particle size on coercivity and crystallinity of SmCo5. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2011/07/04/ VL - 99 IS - 1 M3 - Article SP - 012504 PB - American Institute of Physics SN - 00036951 AB - It is observed a turning point in the particle size for which the coercivity Hci of a Sm-Co alloy reaches a peak. Using a broad size range from 20 nm to 5 mm, the turning point of the flake thickness for SmCo5 nanoflakes is determined in the range of 100-180 nm with Hci peak at ∼20 kOe. A lower coercivity at a particle size well below the turning point is likely related to a more detailed nanoscale morphology that controls coercivity. The effect of particle size on crystallinity for high energy milled powder is also discussed with four observations. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLE size determination KW - ALLOYS KW - NANOELECTRONICS KW - NANOELECTROMECHANICAL systems KW - MORPHOLOGY KW - SEMICONDUCTOR wafers N1 - Accession Number: 62546982; Chen, C. H. 1,2; Email Address: christina.h.chen@gmail.com Knutson, S. J. 1 Shen, Y. 1 Wheeler, R. A. 3 Horwath, J. C. 4 Barnes, P. N. 4,5; Affiliation: 1: UDRI, University of Dayton, Dayton, Ohio 45469, USA 2: GE Global Research, Niskayuna, New York 12309, USA 3: UES Inc., Dayton, Ohio 45432, USA 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 5: Army Research Laboratory, Adelphi, Maryland 20783, USA; Source Info: 7/4/2011, Vol. 99 Issue 1, p012504; Subject Term: PARTICLE size determination; Subject Term: ALLOYS; Subject Term: NANOELECTRONICS; Subject Term: NANOELECTROMECHANICAL systems; Subject Term: MORPHOLOGY; Subject Term: SEMICONDUCTOR wafers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 1 Black and White Photograph, 4 Graphs; Document Type: Article L3 - 10.1063/1.3607958 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62546982&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sun, S. AU - Ang, L. K. AU - Shiffler, D. AU - Luginsland, J. W. T1 - Klein tunnelling model of low energy electron field emission from single-layer graphene sheet. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2011/07/04/ VL - 99 IS - 1 M3 - Article SP - 013112 PB - American Institute of Physics SN - 00036951 AB - By considering the effect of Klein tunneling for low energy electrons with linear energy dispersion, a model has been constructed to calculate the amount of emitted line current density from a single-layer graphene sheet, which is vertically aligned inside a dc gap. It is found that the current-voltage scaling obtained from the constructed Klein tunneling model is very different from the traditional field emission model based on the Fowler-Nordheim (FN) law. Under the same geometrical field enhancement factor, our model predicts a much higher emitted current as compared to the FN law at low voltages. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - GRAPHENE KW - FIELD emission KW - TUNNELING (Physics) KW - ELECTRIC potential KW - ELECTRIC currents N1 - Accession Number: 62546960; Sun, S. 1 Ang, L. K. 1; Email Address: elkang@ntu.edu.sg Shiffler, D. 2 Luginsland, J. W. 3; Affiliation: 1: School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798 2: Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117, USA 3: Air Force Office of Scientific Research, Arlington, Virginia 22203, USA; Source Info: 7/4/2011, Vol. 99 Issue 1, p013112; Subject Term: ELECTRONS; Subject Term: GRAPHENE; Subject Term: FIELD emission; Subject Term: TUNNELING (Physics); Subject Term: ELECTRIC potential; Subject Term: ELECTRIC currents; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.3609781 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62546960&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McGowan, Gregory Z. AU - Granlund, Kenneth AU - Ol, Michael V. AU - Gopalarathnam, Ashok AU - Edwards, Jack R. T1 - Investigations of Lift-Based Pitch--Plunge Equivalence for Airfoils at Low Reynolds Numbers. JO - AIAA Journal JF - AIAA Journal Y1 - 2011/07// VL - 49 IS - 7 M3 - Article SP - 1511 EP - 1524 SN - 00011452 AB - The limits of linear superposition in two-dimensional high-rate low-Reynolds-number aerodynamics are examined by comparing the lift-coefficient history and flowfield evolution for airfoils undergoing harmonic motions in pure pitch, pure plunge, and pitch--plunge combinations. Using quasi-steady airfoil theory and Theodorsen's formula as predictive tools, pitching motions are sought that produce lift histories identical to those of prescribed plunging motions. It follows that a suitable phasing of pitch and plunge in a combined motion should identically produce zero lift, canceling either the circulatory contribution (with quasi-steady theory) or the combination of circulatory and noncirculatory contributions (with Theodorsen's formula). Lift history is measured experimentally in a water tunnel using a force balance and is compared with two-dimensional Reynolds-averaged Navier--Stokes computations and Theodorsen's theory; computed vorticity contours are compared with dye injection in the water tunnel. Theodorsen's method evinces considerable, and perhaps surprising, resilience in finding pitch-to-plunge equivalence of lift-coefficient-time history, despite its present application to cases in which its mathematical assumptions are demonstrably violated. A combination of pitch and plunge motions can be found such that net lift coefficient is nearly identically zero for arbitrarily high reduced frequency, provided that amplitude is small. Conversely, cancellation is possible at large motion amplitude, provided that reduced frequency is moderate. The product of Strouhal number and nondimensional amplitude is therefore suggested as the upper bound for when superposition and linear predictions remain valid in massively unsteady two-dimensional problems. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - AEROFOILS KW - REYNOLDS number KW - NAVIER-Stokes equations KW - WATER tunnels N1 - Accession Number: 62566892; McGowan, Gregory Z. 1 Granlund, Kenneth 2 Ol, Michael V. 2 Gopalarathnam, Ashok 1 Edwards, Jack R. 1; Affiliation: 1: North Carolina State University, Raleigh, North Carolina 27695-7910 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542; Source Info: Jul2011, Vol. 49 Issue 7, p1511; Subject Term: AERODYNAMICS; Subject Term: AEROFOILS; Subject Term: REYNOLDS number; Subject Term: NAVIER-Stokes equations; Subject Term: WATER tunnels; Number of Pages: 14p; Document Type: Article L3 - 10.2514/1.J050924 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62566892&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brissett, Wilson T1 - To Change the World: The Irony, Tragedy, & Possibility of Christianity in the Late Modern World. JO - Christianity & Literature JF - Christianity & Literature Y1 - 2011///Summer2011 VL - 60 IS - 4 M3 - Book Review SP - 681 EP - 684 PB - Sage Publications, Ltd. SN - 01483331 AB - The article reviews the book "To Change the World: The Irony, Tragedy, & Possibility of Christianity in the Late Modern World," by James Davison Hunter. KW - CHRISTIANITY & law KW - NONFICTION KW - HUNTER, James Davison, 1955- KW - TO Change the World: The Irony, Tragedy & Possibility of Christianity in the Late Modern World (Book) N1 - Accession Number: 67230188; Brissett, Wilson 1; Affiliation: 1: United States Air Force Academy; Source Info: Summer2011, Vol. 60 Issue 4, p681; Subject Term: CHRISTIANITY & law; Subject Term: NONFICTION; Reviews & Products: TO Change the World: The Irony, Tragedy & Possibility of Christianity in the Late Modern World (Book); People: HUNTER, James Davison, 1955-; Number of Pages: 4p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67230188&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mahulkar, Vishal AU - Adams, Douglas E. AU - Derriso, Mark T1 - Derivative free filtering in hydraulic systems for fault identification JO - Control Engineering Practice JF - Control Engineering Practice Y1 - 2011/07// VL - 19 IS - 7 M3 - Article SP - 649 EP - 657 SN - 09670661 AB - Abstract: Diagnosis of incipient faults in hydraulic systems is of prime importance due to the performance and reliability demands. This paper outlines the application of derivative free filtering in hydraulic systems for the purpose of real-time fault identification. A flexible experimental setup is constructed in order to simulate different types of faults. The method in this paper deals with internal leakage faults. A detailed non-linear model of the hydraulic actuator experimental setup is developed and validated. Robust control strategies typically hide the presence of faults during incipient stages, making identification of the fault difficult. A partial feedback linearization based robust position control strategy is also presented and faults are identified in the presence of robust control. Faults in the hydraulic systems are modeled as parametric faults and second order divided difference filtering (DDF) is used to estimate the states and the parameters. The efficacy of this estimation algorithm is demonstrated using different fault levels as well as different fault growth profiles. The accuracy and the reliability of the methodology are also demonstrated by identifying faults as small as .01l/s. [Copyright &y& Elsevier] AB - Copyright of Control Engineering Practice is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RELIABILITY (Engineering) KW - ACTUATORS KW - FAULT location (Engineering) KW - ALGORITHMS KW - ROBUST control KW - ESTIMATION theory KW - NONLINEAR models (Statistics) KW - Divided difference filtering KW - Estimation KW - Fault identification KW - Hydraulic system KW - Leakage KW - System identification N1 - Accession Number: 61173237; Mahulkar, Vishal 1; Email Address: vishal.mahulkar@gmail.com Adams, Douglas E. 1; Email Address: deadams@purdue.edu Derriso, Mark 2; Email Address: mark.derriso@wpafb.af.mil; Affiliation: 1: 1500 Kepner Drive, Lafayette IN 47905, USA 2: USAF Air Vehicles Directorate, Air Force Research Laboratory, Dayton OH, USA; Source Info: Jul2011, Vol. 19 Issue 7, p649; Subject Term: RELIABILITY (Engineering); Subject Term: ACTUATORS; Subject Term: FAULT location (Engineering); Subject Term: ALGORITHMS; Subject Term: ROBUST control; Subject Term: ESTIMATION theory; Subject Term: NONLINEAR models (Statistics); Author-Supplied Keyword: Divided difference filtering; Author-Supplied Keyword: Estimation; Author-Supplied Keyword: Fault identification; Author-Supplied Keyword: Hydraulic system; Author-Supplied Keyword: Leakage; Author-Supplied Keyword: System identification; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.conengprac.2011.01.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61173237&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jung, Byung Wook AU - Adve, Raviraj S. AU - Chun, Joohwan AU - Wicks, Michael C. T1 - Detection Performance using Frequency Diversity with Distributed Sensors. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2011/07// VL - 47 IS - 3 M3 - Article SP - 1800 EP - 1813 SN - 00189251 AB - Detection using a frequency diverse (FD), distributed, radar system is investigated. Distributed sensing systems provide an inherent spatial diversity by viewing a potential target from different aspect angles. By using different frequencies at each platform, a diversity gain is obtained in addition to the advantages of spatial diversity while also avoiding mutual interference. Here, since platforms are distributed spatially, true time delay is used at each platform to align the sample look point in time. Data models for a distributed system with and without frequency diversity are developed. These models are used to analyze the corresponding signal-to-interference-plus-noise ratio (SINR) and probability of detection for the two cases in the context of space-time adaptive processing (STAP). The simulation results presented here illustrate the limitations imposed by mutual interference and the significant benefits of spatial and frequency diversity. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR KW - DETECTORS KW - PERFORMANCE evaluation KW - DATA modeling KW - ELECTROMAGNETIC interference KW - TIME delay systems KW - SIGNAL-to-noise ratio KW - Clutter KW - Data models KW - Delay effects KW - Electromagnetic interference KW - Frequency diversity KW - Radar N1 - Accession Number: 62559811; Jung, Byung Wook 1 Adve, Raviraj S. 2 Chun, Joohwan 1 Wicks, Michael C. 3; Affiliation: 1: KAIST 2: University of Toronto 3: Air Force Research Laboratory; Source Info: Jul2011, Vol. 47 Issue 3, p1800; Subject Term: RADAR; Subject Term: DETECTORS; Subject Term: PERFORMANCE evaluation; Subject Term: DATA modeling; Subject Term: ELECTROMAGNETIC interference; Subject Term: TIME delay systems; Subject Term: SIGNAL-to-noise ratio; Author-Supplied Keyword: Clutter; Author-Supplied Keyword: Data models; Author-Supplied Keyword: Delay effects; Author-Supplied Keyword: Electromagnetic interference; Author-Supplied Keyword: Frequency diversity; Author-Supplied Keyword: Radar; Number of Pages: 0p; Document Type: Article L3 - 10.1109/TAES.2011.5937266 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62559811&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Pu AU - Li, Hongbin AU - Himed, Braham T1 - Parametric Rao Tests for Multichannel Adaptive Detection in Partially Homogeneous Environment. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2011/07// VL - 47 IS - 3 M3 - Article SP - 1850 EP - 1862 SN - 00189251 AB - This paper considers the problem of detecting a multichannel signal in partially homogeneous environments, where the disturbances in both test signal and training signals share the same covariance matrix up to an unknown power scaling factor. Two different parametric Rao tests, referred to as the normalized parametric Rao (NPRao) test and the scale-invariant parametric Rao (SI-PRao) test, respectively, are developed by modeling the disturbance as a multichannel autoregressive (AR) process. The NPRao and SI-PRao tests entail reduced training requirements and computational efficiency, compared with conventional fully adaptive, covariance matrix based solutions. The SI-PRao test attains asymptotically a constant false alarm rate (CFAR) that is independent of the covariance matrix and power scaling factor of the disturbance. Comparisons with the covariance matrix based, scale-invariant generalized likelihood ratio test (GLRT), also known as the adaptive coherence estimator (ACE), are included. Numerical results show that the parametric Rao detectors, in particular the SI-PRao test, attain considerably better detection performance and use significantly less training than the ACE detector. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DETECTORS KW - AUTOREGRESSION (Statistics) KW - SIGNAL-to-noise ratio KW - MAXIMUM likelihood statistics KW - ESTIMATION theory KW - ANALYSIS of covariance KW - STATISTICAL hypothesis testing KW - Adaptation model KW - Covariance matrix KW - Detectors KW - Matched filters KW - Maximum likelihood estimation KW - Signal to noise ratio KW - Training N1 - Accession Number: 62559814; Wang, Pu 1 Li, Hongbin 1 Himed, Braham 2; Affiliation: 1: Stevens Institute of Technology 2: Air Force Research Laboratory; Source Info: Jul2011, Vol. 47 Issue 3, p1850; Subject Term: DETECTORS; Subject Term: AUTOREGRESSION (Statistics); Subject Term: SIGNAL-to-noise ratio; Subject Term: MAXIMUM likelihood statistics; Subject Term: ESTIMATION theory; Subject Term: ANALYSIS of covariance; Subject Term: STATISTICAL hypothesis testing; Author-Supplied Keyword: Adaptation model; Author-Supplied Keyword: Covariance matrix; Author-Supplied Keyword: Detectors; Author-Supplied Keyword: Matched filters; Author-Supplied Keyword: Maximum likelihood estimation; Author-Supplied Keyword: Signal to noise ratio; Author-Supplied Keyword: Training; Number of Pages: 0p; Document Type: Article L3 - 10.1109/TAES.2011.5937269 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62559814&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Yang AU - Shore, Robert A. T1 - Corrections to “Traveling Waves on Three-Dimensional Periodic Arrays of Two Different Alternating Magnetodielectric Spheres”. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2011/07// VL - 59 IS - 7 M3 - Correction notice SP - 2753 EP - 2754 SN - 0018926X AB - Corrections to the article "Traveling Waves on Three-Dimensional Periodic Arrays of Two Different Alternating Magnetodielectric Spheres," by Yang Li and Robert A. Shore that appeared in the July 2011 issue is presented. KW - ANTENNAS (Electronics) KW - DIELECTRICS KW - ELECTROMAGNETISM KW - EQUATIONS KW - MATHEMATICAL models KW - LABORATORIES KW - COMPUTERS KW - Antennas KW - Computers KW - Dielectrics KW - Equations KW - Laboratories KW - Magnetic losses KW - Mathematical model N1 - Accession Number: 62559927; Li, Yang 1 Shore, Robert A. 2; Affiliation: 1: Department of Electrical and Computer Engineering, and Center for Nondestructive Evaluation, Iowa State University, Ames, IA, USA 2: Air Force Research Laboratory/RYHA, Hanscom AFB, MA, USA; Source Info: Jul2011, Vol. 59 Issue 7, p2753; Subject Term: ANTENNAS (Electronics); Subject Term: DIELECTRICS; Subject Term: ELECTROMAGNETISM; Subject Term: EQUATIONS; Subject Term: MATHEMATICAL models; Subject Term: LABORATORIES; Subject Term: COMPUTERS; Author-Supplied Keyword: Antennas; Author-Supplied Keyword: Computers; Author-Supplied Keyword: Dielectrics; Author-Supplied Keyword: Equations; Author-Supplied Keyword: Laboratories; Author-Supplied Keyword: Magnetic losses; Author-Supplied Keyword: Mathematical model; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 443142 Electronics Stores; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 334111 Electronic Computer Manufacturing; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 541940 Veterinary Services; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 621511 Medical Laboratories; Number of Pages: 2p; Document Type: Correction notice L3 - 10.1109/TAP.2011.2152355 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62559927&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Su, Weifeng AU - Lee, Sangkook AU - Pados, Dimitris A. AU - Matyjas, John D. T1 - Optimal Power Assignment for Minimizing the Average Total Transmission Power in Hybrid-ARQ Rayleigh Fading Links. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2011/07// VL - 59 IS - 7 M3 - Article SP - 1867 EP - 1877 SN - 00906778 AB - We address the fundamental problem of identifying the optimal power assignment sequence for hybrid automatic-repeat-request (H-ARQ) communications over quasi-static Rayleigh fading channels. For any targeted H-ARQ link outage probability, we find the sequence of power values that minimizes the average total expended transmission power. We first derive a set of equations that describe the optimal transmission power assignment and enable its exact recursive calculation. To reduce calculation complexity, we also develop an approximation to the optimal power sequence that is close to the numerically calculated exact result. The newly founded power allocation solution reveals that conventional equal-power H-ARQ assignment is far from optimal. For example, for targeted outage probability of 10^-3 with a maximum of two transmissions, the average total transmission power with the optimal assignment is 9 dB lower than the equal-power protocol. The difference in average total power cost grows further when the number of allowable retransmissions increases (for example, 11 dB gain with a cap of 5 transmissions) or the targeted outage probability decreases (27 dB gain with outage probability 10^-5 and transmissions capped at 5). Interestingly, the optimal transmission power assignment sequence is neither increasing nor decreasing; its form depends on given total power budget and targeted outage performance levels. Extensive numerical and simulation results are presented to illustrate the theoretical development. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC power transmission KW - DATA transmission systems KW - RADIO transmitters & transmission -- Fading KW - NUMERICAL analysis KW - PROBABILITY theory KW - MATHEMATICAL models KW - RAYLEIGH model KW - COMPUTER network protocols KW - SIGNAL-to-noise ratio KW - Automatic repeat request KW - Hybrid automatic-repeat-request (H-ARQ) protocol KW - Mathematical model KW - optimum power allocation KW - outage probability KW - Protocols KW - Rayleigh channels KW - Rayleigh fading KW - Receivers KW - Signal to noise ratio N1 - Accession Number: 62967734; Su, Weifeng 1 Lee, Sangkook 1 Pados, Dimitris A. 1 Matyjas, John D. 2; Affiliation: 1: Department of Electrical Engineering, State University of New York (SUNY) at Buffalo, Buffalo, NY 14260, USA 2: Air Force Research Laboratory/RIGF, Rome, NY 13441, USA; Source Info: Jul2011, Vol. 59 Issue 7, p1867; Subject Term: ELECTRIC power transmission; Subject Term: DATA transmission systems; Subject Term: RADIO transmitters & transmission -- Fading; Subject Term: NUMERICAL analysis; Subject Term: PROBABILITY theory; Subject Term: MATHEMATICAL models; Subject Term: RAYLEIGH model; Subject Term: COMPUTER network protocols; Subject Term: SIGNAL-to-noise ratio; Author-Supplied Keyword: Automatic repeat request; Author-Supplied Keyword: Hybrid automatic-repeat-request (H-ARQ) protocol; Author-Supplied Keyword: Mathematical model; Author-Supplied Keyword: optimum power allocation; Author-Supplied Keyword: outage probability; Author-Supplied Keyword: Protocols; Author-Supplied Keyword: Rayleigh channels; Author-Supplied Keyword: Rayleigh fading; Author-Supplied Keyword: Receivers; Author-Supplied Keyword: Signal to noise ratio; NAICS/Industry Codes: 221121 Electric Bulk Power Transmission and Control; Number of Pages: 0p; Document Type: Article L3 - 10.1109/TCOMM.2011.050911.090796 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62967734&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Meola, Joseph AU - Eismann, Michael T. AU - Moses, Randolph L. AU - Ash, Joshua N. T1 - Detecting Changes in Hyperspectral Imagery Using a Model-Based Approach. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2011/07// VL - 49 IS - 7 M3 - Article SP - 2647 EP - 2661 SN - 01962892 AB - Within the hyperspectral community, change detection is a continued area of interest. Interesting changes in imagery typically correspond to changes in material reflectance associated with pixels in the scene. Using a physical model describing the sensor-reaching radiance, change detection can be formulated as a statistical hypothesis test. Complicating the problem of change detection is the presence of shadow, illumination, and atmospheric differences, as well as misregistration and parallax error, which often produce the appearance of change. The proposed physical model incorporates terms to account for both direct and diffuse shadow fractions to help mitigate false alarms associated with shadow differences between scenes. The resulting generalized likelihood ratio test (GLRT) provides an indicator of change at each pixel. The maximum likelihood estimates of the physical model parameters used for the GLRT are obtained from the entire joint data set to take advantage of coupled information existing between pixel measurements. Simulation results using synthetic and real imagery demonstrate the efficacy of the proposed approach. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMAGING systems KW - REFLECTANCE KW - SIMULATION methods & models KW - PIXELS KW - DATA modeling KW - IMAGE analysis KW - MATHEMATICAL optimization KW - IMAGE processing KW - Change detection KW - Data models KW - hyperspectral KW - Hyperspectral sensors KW - hypothesis testing KW - image analysis KW - Lighting KW - Materials KW - Noise KW - optimization KW - physical model KW - Pixel KW - Sensors N1 - Accession Number: 62026801; Meola, Joseph 1 Eismann, Michael T. 2 Moses, Randolph L. 3 Ash, Joshua N. 4; Affiliation: 1: RYMT, Air Force Research Laboratory (AFRL), Wright-Patterson Air Force Base, OH, USA 2: Air Force Research Laboratory, Wright Patterson Air Force Base, OH, USA 3: Electrical Engineering Department, The Ohio State University, Columbus , OH, USA 4: Electrical Engineering Department, The Ohio State University, Columbus, OH, USA; Source Info: Jul2011, Vol. 49 Issue 7, p2647; Subject Term: IMAGING systems; Subject Term: REFLECTANCE; Subject Term: SIMULATION methods & models; Subject Term: PIXELS; Subject Term: DATA modeling; Subject Term: IMAGE analysis; Subject Term: MATHEMATICAL optimization; Subject Term: IMAGE processing; Author-Supplied Keyword: Change detection; Author-Supplied Keyword: Data models; Author-Supplied Keyword: hyperspectral; Author-Supplied Keyword: Hyperspectral sensors; Author-Supplied Keyword: hypothesis testing; Author-Supplied Keyword: image analysis; Author-Supplied Keyword: Lighting; Author-Supplied Keyword: Materials; Author-Supplied Keyword: Noise; Author-Supplied Keyword: optimization; Author-Supplied Keyword: physical model; Author-Supplied Keyword: Pixel; Author-Supplied Keyword: Sensors; NAICS/Industry Codes: 812922 One-Hour Photofinishing; NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; Number of Pages: 15p; Document Type: Article L3 - 10.1109/TGRS.2011.2109726 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62026801&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Yan-Ran AU - Shen, Lixin AU - Dai, Dao-Qing AU - Suter, Bruce W. T1 - Framelet Algorithms for De-Blurring Images Corrupted by Impulse Plus Gaussian Noise. JO - IEEE Transactions on Image Processing JF - IEEE Transactions on Image Processing Y1 - 2011/07// VL - 20 IS - 7 M3 - Article SP - 1822 EP - 1837 SN - 10577149 AB - This paper studies a problem of image restoration that observed images are contaminated by Gaussian and impulse noise. Existing methods for this problem in the literature are based on minimizing an objective functional having the \ell^1 fidelity term and the Mumford–Shah regularizer. We present an algorithm on this problem by minimizing a new objective functional. The proposed functional has a content-dependent fidelity term which assimilates the strength of fidelity terms measured by the \ell^1 and \ell^2 norms. The regularizer in the functional is formed by the \ell^1 norm of tight framelet coefficients of the underlying image. The selected tight framelet filters are able to extract geometric features of images. We then propose an iterative framelet-based approximation/sparsity deblurring algorithm (IFASDA) for the proposed functional. Parameters in IFASDA are adaptively varying at each iteration and are determined automatically. In this sense, IFASDA is a parameter-free algorithm. This advantage makes the algorithm more attractive and practical. The effectiveness of IFASDA is experimentally illustrated on problems of image deblurring with Gaussian and impulse noise. Improvements in both PSNR and visual quality of IFASDA over a typical existing method are demonstrated. In addition, Fast_IFASDA, an accelerated algorithm of IFASDA, is also developed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Image Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMAGE reconstruction KW - IMAGE processing KW - ALGORITHMS KW - RANDOM noise theory KW - MATHEMATICAL optimization KW - APPROXIMATION theory KW - PIXELS KW - MATHEMATICAL models KW - Adaptive iterated algorithm KW - Approximation methods KW - Hafnium KW - Image restoration KW - Mathematical model KW - Noise KW - Noise measurement KW - parameter-free KW - Pixel KW - tight framelet N1 - Accession Number: 61751473; Li, Yan-Ran 1 Shen, Lixin 2 Dai, Dao-Qing 3 Suter, Bruce W. 4; Affiliation: 1: Shenzhen City Key Laboratory of Embedded System Design, College of Computer Science and Software Engineering, Shenzhen University, Shenzhen, China 2: Department of Mathematics, Syracuse University, Syracuse, NY, USA 3: Center for Computer Vision and Department of Mathematics, Faculty of Mathematics and Computing, Sun Yat-Sen University, Guangzhou, China 4: Air Force Research Laboratory, Rome,; Source Info: Jul2011, Vol. 20 Issue 7, p1822; Subject Term: IMAGE reconstruction; Subject Term: IMAGE processing; Subject Term: ALGORITHMS; Subject Term: RANDOM noise theory; Subject Term: MATHEMATICAL optimization; Subject Term: APPROXIMATION theory; Subject Term: PIXELS; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: Adaptive iterated algorithm; Author-Supplied Keyword: Approximation methods; Author-Supplied Keyword: Hafnium; Author-Supplied Keyword: Image restoration; Author-Supplied Keyword: Mathematical model; Author-Supplied Keyword: Noise; Author-Supplied Keyword: Noise measurement; Author-Supplied Keyword: parameter-free; Author-Supplied Keyword: Pixel; Author-Supplied Keyword: tight framelet; NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 812922 One-Hour Photofinishing; Number of Pages: 16p; Document Type: Article L3 - 10.1109/TIP.2010.2103950 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61751473&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sego, D.J. AU - Griffiths, H. AU - Wicks, M.C. T1 - Waveform and aperture design for low-frequency RF tomography. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2011/07// VL - 5 IS - 6 M3 - Article SP - 686 EP - 696 PB - Institution of Engineering & Technology SN - 17518784 AB - Multiple applications would benefit from low frequency, three-dimensional (3-D), high resolution, imagery, among them remote archeological survey through foliage, and detecting voids in collapsed structures and underground. High vertical resolution circular SAR requires ultrawideband waveforms, a problematic aspect in the modern RF spectral environment, particularly at lower frequencies. RF tomography offers the potential to yield high, 3-D resolution using spectrally sparse, narrowband waveforms simultaneously with operation at frequencies that have demonstrated favourable penetration through intervening dielectric media. In this paper, we explore this potential; evaluating minimal spatial support tomographic apertures, combining diverse narrowband signals with 2- and 3-dimensional monostatic and bistatic apertures. Results are presented in terms of image quality metrics: resolution and sidelobe levels. It is shown that, generally, frequency selection is a soft constraint in terms of the achievable resolution and sidelobe levels, that the tomographic aperture with spatial sampling that is linearly continuous and substantially less than hemispherical yields high spatial resolution, and that there is interaction between the tomographic aperture and the waveform set as evidenced in the point spread function. Additionally the bistatic contribution of the collection aperture Fourier surface is demonstrated to enhance image quality when combined in a hybrid monostatic-bistatic aperture. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TOMOGRAPHY KW - RADIO frequency KW - FREQUENCIES of oscillating systems KW - IMAGE quality analysis KW - THREE-dimensional imaging KW - HIGH resolution imaging KW - ENERGY bands N1 - Accession Number: 61979053; Sego, D.J. 1 Griffiths, H. 2 Wicks, M.C. 3; Affiliation: 1: University College London, Department of Electrical and Electronic Engineering, Seattle, USA 2: University College London, Department of Electrical and Electronic Engineering, London, UK 3: Sensors Directorate, Air Force Research Laboratory, Rome, USA; Source Info: Jul2011, Vol. 5 Issue 6, p686; Subject Term: TOMOGRAPHY; Subject Term: RADIO frequency; Subject Term: FREQUENCIES of oscillating systems; Subject Term: IMAGE quality analysis; Subject Term: THREE-dimensional imaging; Subject Term: HIGH resolution imaging; Subject Term: ENERGY bands; Number of Pages: 11p; Illustrations: 2 Diagrams, 4 Charts, 6 Graphs; Document Type: Article L3 - 10.1049/iet-rsn.2011.0014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61979053&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barney, Emma R. AU - Hannon, Alex C. AU - Senkov, Oleg N. AU - Scott, James M. AU - Miracle, Daniel B. AU - Moss, Robert M. T1 - A neutron and X-ray diffraction study of Ca–Mg–Cu metallic glasses JO - Intermetallics JF - Intermetallics Y1 - 2011/07// VL - 19 IS - 7 M3 - Article SP - 860 EP - 870 SN - 09669795 AB - Abstract: The structures of Ca60Mg15Cu25, Ca60Mg20Cu20 and Ca60Mg25Cu15 metallic glasses have been investigated by neutron and X-ray diffraction. The correlation functions show a peak manifold in the region 2.2–4.5 Å, arising from the various atom pairs for these glasses. The results show clearly that there are contacts between the solute atoms (Cu and Mg) which agree with a simple estimate of the maximum solute atom fraction beyond which solute–solute contact becomes topologically necessary. The Cu–Mg and Cu–Ca distances are consistent with the sum of covalent radii, whereas all other interatomic distances are consistent with the sum of metallic radii. The neutron and X-ray diffraction correlation functions were simultaneously fitted with a series of symmetric peaks to obtain coordination numbers and interatomic distances, but only the results from the first two peaks, Cu–Cu and Cu–Mg, are of reasonable reliability. The Percus–Yevick approximation for binary hard sphere systems has been used to simulate the results. This shows that the results of fits to the Cu–Cu and Cu–Mg correlations give a reasonable description for atoms which are in close contact, but do not include an additional contribution at longer distance due to atoms which are almost in contact. The fits to the Cu–Ca peak are strongly affected by overlaps with both the longer distance peaks used in the fit, and the broad trailing edge in the distributions of interatomic distances that is not taken into account by fitting with symmetric peaks. Final results show that copper has a total of 6.5 neighbours which are in close contact, but has a total coordination number of about 12–13, when atoms which are almost in contact are included. [Copyright &y& Elsevier] AB - Copyright of Intermetallics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - X-ray diffraction KW - NEUTRON diffraction KW - METALLIC glasses KW - CALCIUM alloys KW - MOLECULAR structure KW - METALS -- Rapid solidification processing KW - TERNARY alloys KW - A. Ternary alloy systems KW - B. Glasses, metallic KW - C. Rapid solidification processing KW - F. Diffraction N1 - Accession Number: 60158231; Barney, Emma R. 1; Email Address: emma.barney@stfc.ac.uk Hannon, Alex C. 1 Senkov, Oleg N. 2 Scott, James M. 2 Miracle, Daniel B. 3 Moss, Robert M. 4; Affiliation: 1: ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, UK 2: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA 4: School of Physical Sciences, University of Kent, Canterbury CT2 7NH, UK; Source Info: Jul2011, Vol. 19 Issue 7, p860; Subject Term: X-ray diffraction; Subject Term: NEUTRON diffraction; Subject Term: METALLIC glasses; Subject Term: CALCIUM alloys; Subject Term: MOLECULAR structure; Subject Term: METALS -- Rapid solidification processing; Subject Term: TERNARY alloys; Author-Supplied Keyword: A. Ternary alloy systems; Author-Supplied Keyword: B. Glasses, metallic; Author-Supplied Keyword: C. Rapid solidification processing; Author-Supplied Keyword: F. Diffraction; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.intermet.2011.02.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60158231&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parthasarathy, Triplicane A. AU - Petry, M. Dennis AU - Jefferson, George AU - Cinibulk, Michael K. AU - Mathur, Tarun AU - Gruber, Mark R. T1 - Development of a Test to Evaluate Aerothermal Response of Materials to Hypersonic Flow Using a Scramjet Wind Tunnel. JO - International Journal of Applied Ceramic Technology JF - International Journal of Applied Ceramic Technology Y1 - 2011/07// VL - 8 IS - 4 M3 - Article SP - 832 EP - 847 SN - 1546542X KW - CERAMICS KW - HIGH temperatures KW - WIND tunnel testing KW - HYPERSONIC aerodynamics KW - SCRAMJET engines KW - PROTOTYPES KW - FLUID dynamics KW - FREE flight (Air traffic control) N1 - Accession Number: 62461298; Parthasarathy, Triplicane A. 1 Petry, M. Dennis 1 Jefferson, George 1 Cinibulk, Michael K. 1 Mathur, Tarun 2 Gruber, Mark R. 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLN, Wright-Patterson AFB, OH 45433 2: ISSI, Dayton, Ohio 45432 3: Air Force Research Laboratory, Propulsion and Power Directorate, AFRL/RZAS, Wright-Patterson AFB, Ohio 45433; Source Info: Jul2011, Vol. 8 Issue 4, p832; Subject Term: CERAMICS; Subject Term: HIGH temperatures; Subject Term: WIND tunnel testing; Subject Term: HYPERSONIC aerodynamics; Subject Term: SCRAMJET engines; Subject Term: PROTOTYPES; Subject Term: FLUID dynamics; Subject Term: FREE flight (Air traffic control); NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; Number of Pages: 16p; Document Type: Article L3 - 10.1111/j.1744-7402.2010.02515.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62461298&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schreiber, Brian T. AU - Schroeder, Mark AU - Bennett, Winston T1 - Distributed Mission Operations Within-Simulator Training Effectiveness. JO - International Journal of Aviation Psychology JF - International Journal of Aviation Psychology Y1 - 2011/07//Jul-Sep2011 VL - 21 IS - 3 M3 - Article SP - 254 EP - 268 PB - Taylor & Francis Ltd SN - 10508414 AB - This study examined the effectiveness of distributed mission operations (DMO) training using objective and subjective measures. DMO consists of multiplayer networked environments that facilitate the training of higher order individual and team-oriented combat skills. Objective measures included performance assessments, and subjective measures included performance ratings by subject matter experts and pilot perceptions of DMO utility. Results indicated that DMO training improved pilot performance, most notably in the reduction of the number of enemy strikers reaching their target and the number of F-16 mortalities. Considerations of real-world reductions in loss of life and expenditures are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aviation Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIGHTER pilots KW - MILITARY education KW - AVIATION psychology KW - PERFORMANCE evaluation KW - FLIGHT simulators KW - FIGHTER plane combat KW - F-16 (Jet fighter plane) KW - SPECIALISTS KW - TRAINING of N1 - Accession Number: 62667877; Schreiber, Brian T. 1 Schroeder, Mark 1 Bennett, Winston 2; Affiliation: 1: Lumir Research Institute, Grayslake, Illinois 2: Air Force Research Laboratory, Mesa, Arizona; Source Info: Jul-Sep2011, Vol. 21 Issue 3, p254; Subject Term: FIGHTER pilots; Subject Term: MILITARY education; Subject Term: AVIATION psychology; Subject Term: PERFORMANCE evaluation; Subject Term: FLIGHT simulators; Subject Term: FIGHTER plane combat; Subject Term: F-16 (Jet fighter plane); Subject Term: SPECIALISTS; Subject Term: TRAINING of; NAICS/Industry Codes: 611110 Elementary and Secondary Schools; NAICS/Industry Codes: 928110 National Security; NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; Number of Pages: 15p; Document Type: Article L3 - 10.1080/10508414.2011.582448 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62667877&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Calvin H. AU - Li, T. AU - Hodgins, Paul AU - Hunter, Chad N. AU - Voevodin, Andrey A. AU - Jones, John G. AU - Peterson, G.P. T1 - Comparison study of liquid replenishing impacts on critical heat flux and heat transfer coefficient of nucleate pool boiling on multiscale modulated porous structures JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2011/07// VL - 54 IS - 15/16 M3 - Article SP - 3146 EP - 3155 SN - 00179310 AB - Abstract: The critical heat flux (CHF) and heat transfer coefficient of de-ionized (DI) water pool boiling have been experimentally studied on a plain surface, one uniform thick porous structure, two modulated porous structures and two hybrid modulated porous structures. The modulated porous structure design has a porous base of 0.55mm thick with four 3mm diameter porous pillars of 3.6mm high on the top of the base. The microparticle size combinations of porous base and porous pillars are uniform 250μm, uniform 400μm, 250μm for base and 400μm for pillars, and 400μm for base and 250μm for pillars. Both the CHF and heat transfer coefficient are significantly improved by the modulated porous. The boiling curves for different kinds of porous structures and a plain surface are compared and analyzed. Hydrodynamic instability for the two-phase change heat transfer has been delayed by the porous pillars which dramatically enhances the CHF. The highest pool boiling heat flux occurring on the modulated porous structures has a value of 450W/cm2, over three times of the CHF on a plain surface. Additionally, the highest heat transfer coefficient also reaches a value of 20W/cm2 K, three times of that on a plain copper surface. The study also demonstrates that the horizontal liquid replenishing is equally important as the vertical liquid replenishing for the enhancement of heat transfer coefficient and CHF improvement in nucleate pool boiling. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPARATIVE studies KW - CRITICAL phenomena (Physics) KW - HEAT flux KW - NUSSELT number KW - NUCLEATION KW - MULTISCALE modeling KW - POROUS materials KW - HEAT transfer KW - SURFACES (Technology) KW - HYDRODYNAMICS KW - CHF KW - Multiscale modulated porous structure KW - Nucleate boiling KW - Two-phase change heat transfer N1 - Accession Number: 60789628; Li, Calvin H. 1,2,3; Email Address: calvin.li@villanova.edu Li, T. 2 Hodgins, Paul 2 Hunter, Chad N. 1 Voevodin, Andrey A. 1 Jones, John G. 1 Peterson, G.P. 4; Affiliation: 1: Thermal Sciences and Materials Branch, Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, United States 2: Department of Mechanical, Industrial, and Manufacturing Engineering, University of Toledo, Toledo, OH 43606, United States 3: Department of Mechanical Engineering, Villanova University, Villanova, PA 19085, United States 4: The G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States; Source Info: Jul2011, Vol. 54 Issue 15/16, p3146; Subject Term: COMPARATIVE studies; Subject Term: CRITICAL phenomena (Physics); Subject Term: HEAT flux; Subject Term: NUSSELT number; Subject Term: NUCLEATION; Subject Term: MULTISCALE modeling; Subject Term: POROUS materials; Subject Term: HEAT transfer; Subject Term: SURFACES (Technology); Subject Term: HYDRODYNAMICS; Author-Supplied Keyword: CHF; Author-Supplied Keyword: Multiscale modulated porous structure; Author-Supplied Keyword: Nucleate boiling; Author-Supplied Keyword: Two-phase change heat transfer; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2011.03.062 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60789628&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhou, Zhong AU - Gill, Amrinder S. AU - Qian, Dong AU - Mannava, S.R. AU - Langer, Kristina AU - Wen, Youhai AU - Vasudevan, Vijay K. T1 - A finite element study of thermal relaxation of residual stress in laser shock peened IN718 superalloy JO - International Journal of Impact Engineering JF - International Journal of Impact Engineering Y1 - 2011/07// VL - 38 IS - 7 M3 - Article SP - 590 EP - 596 SN - 0734743X AB - Abstract: The residual stresses in laser shock peened (LSP) Inconel 718 Ni-base superalloy and their thermal relaxation behavior were investigated based on three-dimensional nonlinear finite element analysis. To account for the nonlinear constitutive behavior, the Johnson–Cook model has been employed and the model parameters for high strain rate response of IN718 are calibrated by comparison with recent experimental results. Based on the LSP simulation, the thermal relaxation behavior was studied through coupled thermal-structure analysis in LS-DYNA. More specifically, the effects of test temperature, exposure time and degree of initial plastic deformation are analyzed and discussed. It is observed that stress relaxation mainly occurs during the initial period of exposure, and the relaxation amplitude increases with the increase of applied temperature and as-peened plastic deformation. Based on the simulation results, an analytical model based on Zener–Wert–Avrami function is proposed to model the thermal residual stress relaxation. [Copyright &y& Elsevier] AB - Copyright of International Journal of Impact Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESIDUAL stresses KW - RELAXATION phenomena KW - LASER peening KW - HEAT resistant alloys KW - INCONEL KW - NICKEL alloys KW - DEFORMATIONS (Mechanics) KW - FINITE element method KW - Finite element analysis KW - Inconel 718 KW - Laser shock peening KW - Residual stress relaxation N1 - Accession Number: 60520373; Zhou, Zhong 1 Gill, Amrinder S. 1 Qian, Dong 1; Email Address: dong.qian@uc.edu Mannava, S.R. 1 Langer, Kristina 2 Wen, Youhai 3 Vasudevan, Vijay K. 1; Affiliation: 1: University of Cincinnati, College of Engineering and Applied Science, Cincinnati, OH 45221, USA 2: Air Force Research Laboratory/RBSM, Wright Patterson Air Force Base, Dayton, OH 45433, USA 3: National Energy Technology Laboratory, 1450 Queen Ave. SW, Albany, OR 97321, USA; Source Info: Jul2011, Vol. 38 Issue 7, p590; Subject Term: RESIDUAL stresses; Subject Term: RELAXATION phenomena; Subject Term: LASER peening; Subject Term: HEAT resistant alloys; Subject Term: INCONEL; Subject Term: NICKEL alloys; Subject Term: DEFORMATIONS (Mechanics); Subject Term: FINITE element method; Author-Supplied Keyword: Finite element analysis; Author-Supplied Keyword: Inconel 718; Author-Supplied Keyword: Laser shock peening; Author-Supplied Keyword: Residual stress relaxation; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijimpeng.2011.02.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60520373&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boston, Jonathan AU - Swenson, Eric AU - Kunz, Donald AU - Wenbin Yu AU - Blair, Maxwell T1 - Experiments with Geometric Nonlinear Coupling for Analytical Validation. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2011/07//Jul/Aug2011 VL - 48 IS - 4 M3 - Article SP - 1136 EP - 1146 SN - 00218669 AB - This study was focused on obtaining accurate experimental data for the validation of the geometrically exact beam theory from a series of experiments in which high-quality surface shape and deflection data were collected. Many previous experiments have experienced issues with data collection or test articles, which the researchers were unable to overcome. This test program was performed in two stages: qualification and joined wing. The qualification stage validated the experimental procedures on a simple 72-in.-Iong aluminum beam with 8 in. x 0.5 in. cross section. The joined-wing stage was the primary experiment focused on obtaining quality data for use in validation, and each joined-wing test article had an overall length of 57 in. The fore wing segment was designed with a chord of 8 in. and a thickness of 0.5 in.; the aft wing segment was designed with a chord of 6 in. and a thickness of 0.5 in. These dimensions were chosen so the joined-wing test article produced nonlinear bend-twist coupling before permanent deformation. Bend-twist coupling in a solid cross-section aluminum joined-wing test article was successfully captured with surface shape, deflection points, and strain data. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GEOMETRIC analysis KW - CATHODE ray tubes -- Deflection systems KW - COUPLINGS (Gearing) KW - BEAM dynamics KW - ALUMINUM N1 - Accession Number: 65789590; Boston, Jonathan 1 Swenson, Eric 1 Kunz, Donald 1 Wenbin Yu 2 Blair, Maxwell 3; Affiliation: 1: U.S. Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433 2: Utah State University, Logan, Utah 84322 3: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jul/Aug2011, Vol. 48 Issue 4, p1136; Subject Term: GEOMETRIC analysis; Subject Term: CATHODE ray tubes -- Deflection systems; Subject Term: COUPLINGS (Gearing); Subject Term: BEAM dynamics; Subject Term: ALUMINUM; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 333613 Mechanical Power Transmission Equipment Manufacturing; NAICS/Industry Codes: 333619 Other engine and power transmission equipment manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.2514/1 .C031033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65789590&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanford, Bret AU - Beran, Philip T1 - Optimal Structural Topology of a Platelike Wing for Subsonic Aeroelastic Stability. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2011/07//Jul/Aug2011 VL - 48 IS - 4 M3 - Article SP - 1193 EP - 1203 SN - 00218669 AB - This paper discusses the construction of a Pareto tradeoff curve between the flight speed at which a platelike wing encounters an aeroelastic stability and the weight of that wing. The thickness of each finite element is used as a design variable in order to locate the optimal topological reinforcement as a function of the desired location along the Pareto front, as well as the planform of the wing. Three main challenges are addressed. First, the destabilizing flight speed must be located in an accurate and efficient manner. Second, the derivative of the flight speed with respect to a large number of thickness design variables must be computed analytically. Finally, the gradient-based optimization must contend with a discontinuous switch in the critical aeroelastic mode, slowing convergence. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - AEROELASTICITY KW - TOPOLOGY KW - SPEED KW - AERONAUTICS N1 - Accession Number: 65789595; Stanford, Bret 1; Email Address: bret.stanford@wpafb.af.mil Beran, Philip 1; Email Address: philip.beran@wpafb.af.mil; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jul/Aug2011, Vol. 48 Issue 4, p1193; Subject Term: AERODYNAMICS; Subject Term: AEROELASTICITY; Subject Term: TOPOLOGY; Subject Term: SPEED; Subject Term: AERONAUTICS; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; Number of Pages: 11p; Document Type: Article L3 - 10.2514/1.C031185 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65789595&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hon, Nick K. AU - Soref, Richard AU - Jalali, Bahram T1 - The third-order nonlinear optical coefficients of Si, Ge, and Si1-xGex in the midwave and longwave infrared. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/07// VL - 110 IS - 1 M3 - Article SP - 011301 PB - American Institute of Physics SN - 00218979 AB - Using a combination of semiconductor theory and experimental results from the scientific literature, we have compiled and plotted the key third-order nonlinear optical coefficients of bulk crystalline Si and Ge as a function of wavelength (1.5-6.7 μm for Si and 2-14.7 μm for Ge). The real part of third-order nonlinear dielectric susceptibility (χ(3)′), the two-photon absorption coefficient (βTPA), and the Raman gain coefficient (gR), have been investigated. Theoretical predictions were used to curve-fit the experimental data. For a spectral range in which no experimental data exists, we estimate and fill in the missing knowledge. Generally, these coefficient-values appear quite useful for a host of device applications, both Si and Ge offer large χ(3)′ and gR with Ge offering the stronger nonlinearity. In addition, we use the same theory to predict the third-order nonlinear optical coefficients of Si1-xGex alloy. By alloying Si and Ge, device designers can gain flexibility in tuning desired optical coefficients in between the two fundamental components based upon their application requirements. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR optics KW - RESEARCH KW - INFRARED imaging KW - DIELECTRICS -- Research KW - SILICON crystals KW - GERMANIUM crystals N1 - Accession Number: 62808866; Hon, Nick K. 1 Soref, Richard 2 Jalali, Bahram 1; Affiliation: 1: Photonics Laboratory, Electrical Engineering Department, University of California, Los Angeles, California 90095, 2: Sensors Directorate, Air Force Research Laboratory, AFRL/RYHC, Hanscom Air Force Base, Massachusetts 01731-2909,; Source Info: Jul2011, Vol. 110 Issue 1, p011301; Subject Term: NONLINEAR optics; Subject Term: RESEARCH; Subject Term: INFRARED imaging; Subject Term: DIELECTRICS -- Research; Subject Term: SILICON crystals; Subject Term: GERMANIUM crystals; Number of Pages: 8p; Illustrations: 7 Graphs; Document Type: Article L3 - 10.1063/1.3592270 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62808866&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fok, M.-C. AU - Glocer, A. AU - Zheng, Q. AU - Horne, R.B. AU - Meredith, N.P. AU - Albert, J.M. AU - Nagai, T. T1 - Recent developments in the radiation belt environment model JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2011/07// VL - 73 IS - 11/12 M3 - Article SP - 1435 EP - 1443 SN - 13646826 AB - Abstract: The fluxes of energetic particles in the radiation belts are found to be strongly controlled by the solar wind conditions. In order to understand and predict the radiation particle intensities, we have developed a physics-based Radiation Belt Environment (RBE) model that considers the influences from the solar wind, ring current and plasmasphere. Recently, an improved calculation of wave-particle interactions has been incorporated. In particular, the model now includes cross diffusion in energy and pitch-angle. We find that the exclusion of cross diffusion could cause significant overestimation of electron flux enhancement during storm recovery. The RBE model is also connected to MHD fields so that the response of the radiation belts to fast variations in the global magnetosphere can be studied. We are able to reproduce the rapid flux increase during a substorm dipolarization on 4 September 2008. The timing is much shorter than the time scale of wave associated acceleration. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR energetic particles KW - RADIATION belts KW - SOLAR wind KW - PLASMASPHERE KW - DIFFUSION KW - MAGNETOSPHERE KW - SPACE environment KW - Radiation belts KW - Space weather KW - Storm and substorm KW - Wave-particle interactions N1 - Accession Number: 62557171; Fok, M.-C. 1; Email Address: mei-ching.h.fok@nasa.gov Glocer, A. 1 Zheng, Q. 1,2 Horne, R.B. 3 Meredith, N.P. 3 Albert, J.M. 4 Nagai, T. 5; Affiliation: 1: Geospace Physics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA 2: Department of Astronomy, University of Maryland, College Park, MD, USA 3: Physical Science Division, British Antarctic Survey, Cambridge, UK 4: Air Force Research Laboratory, Hanscom, MA, USA 5: Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Tokyo, Japan; Source Info: Jul2011, Vol. 73 Issue 11/12, p1435; Subject Term: SOLAR energetic particles; Subject Term: RADIATION belts; Subject Term: SOLAR wind; Subject Term: PLASMASPHERE; Subject Term: DIFFUSION; Subject Term: MAGNETOSPHERE; Subject Term: SPACE environment; Author-Supplied Keyword: Radiation belts; Author-Supplied Keyword: Space weather; Author-Supplied Keyword: Storm and substorm; Author-Supplied Keyword: Wave-particle interactions; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jastp.2010.09.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62557171&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Moore, Brian M. AU - Ramirez, Sean M. AU - Yandek, Gregory R. AU - Haddad, Timothy S. AU - Mabry, Joseph M. T1 - Asymmetric aryl polyhedral oligomeric silsesquioxanes (ArPOSS) with enhanced solubility JO - Journal of Organometallic Chemistry JF - Journal of Organometallic Chemistry Y1 - 2011/07// VL - 696 IS - 13 M3 - Article SP - 2676 EP - 2680 SN - 0022328X AB - Abstract: Four new asymmetric Polyhedral Oligomeric SilSesquioxanes (POSS) with the formula (Aryl)Phenyl7Si8O12, where Aryl = 1-naphthyl, 2-naphthyl, 9-phenanthrenyl, and 1-pyrenyl, have been synthesized in reasonable yield and high purity. These compounds were characterized with 1H, 13C, 29Si NMR and elemental combustion analysis. These compounds possess polycyclic aromatic functionality, which disrupts symmetry to improve solubility in organic solvents and aromatic polymers, without significant impact on thermal stability. [Copyright &y& Elsevier] AB - Copyright of Journal of Organometallic Chemistry is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASYMMETRY (Chemistry) KW - ORGANIC solvents KW - ORGANOSILICON compounds KW - POLYCYCLIC aromatic compounds KW - POLYMERS KW - THERMAL analysis KW - NUCLEAR magnetic resonance spectroscopy KW - Aromatic KW - Polycyclic KW - POSS KW - Silsesquioxane KW - Solubility KW - Thermal Stability N1 - Accession Number: 60929387; Moore, Brian M. 1 Ramirez, Sean M. 2 Yandek, Gregory R. 1 Haddad, Timothy S. 2 Mabry, Joseph M. 1; Email Address: joseph.mabry@edwards.af.mil; Affiliation: 1: Air Force Research Laboratory, Space & Missile Propulsion Division, Edwards Air Force Base, CA 93524, USA 2: ERC Inc., Air Force Research Laboratory, Space & Missile Propulsion Division, Edwards Air Force Base, CA 93524, USA; Source Info: Jul2011, Vol. 696 Issue 13, p2676; Subject Term: ASYMMETRY (Chemistry); Subject Term: ORGANIC solvents; Subject Term: ORGANOSILICON compounds; Subject Term: POLYCYCLIC aromatic compounds; Subject Term: POLYMERS; Subject Term: THERMAL analysis; Subject Term: NUCLEAR magnetic resonance spectroscopy; Author-Supplied Keyword: Aromatic; Author-Supplied Keyword: Polycyclic; Author-Supplied Keyword: POSS; Author-Supplied Keyword: Silsesquioxane; Author-Supplied Keyword: Solubility; Author-Supplied Keyword: Thermal Stability; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jorganchem.2011.03.035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60929387&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dalal, Kimberly Moore AU - Gollub, Marc J. AU - Miner, Thomas J. AU - Wong, W. Douglas AU - Gerdes, Hans AU - Schattner, Mark A. AU - Jaques, David P. AU - Temple, Larissa K.F. T1 - Management of Patients with Malignant Bowel Obstruction and Stage IV Colorectal Cancer. JO - Journal of Palliative Medicine JF - Journal of Palliative Medicine Y1 - 2011/07// VL - 14 IS - 7 M3 - Article SP - 822 EP - 828 PB - Mary Ann Liebert, Inc. SN - 10966218 AB - Background: Malignant bowel obstruction (MBO), a serious problem in stage IV colorectal cancer (CRC) patients, remains poorly understood. Optimal management requires realistic assessment of treatment goals. This study's purpose is to characterize outcomes following palliative intervention for MBO in the setting of metastatic CRC. Study Design: Retrospective review of a prospective palliative database identified 141 patients undergoing surgical (OR; n = 96) or endoscopic (GI; n = 45) procedures for symptoms of MBO. Results: Median patient age was 58 years, median follow-up 7 months. Most (63%) had multiple sites of metastases. Computed tomography (CT) scan findings of carcinomatosis ( p = 0.002), ascites ( p = 0.05), and multifocal obstruction with carcinomatosis and ascites ( p = 0.03) significantly predicted the need for percutaneous or open gastrostomy tube, or stoma. Procedure-associated morbidity for 81 patients with small bowel obstruction (SBO) was 37%; 7% developed an enterocutaneous fistula/anastomotic leak. Thirty-day mortality was 6%. Most (84%) patients were palliated successfully; some received additional chemotherapy (38%) or surgery (12%). Procedure-associated morbidity for 60 patients with large bowel obstruction (LBO) was 25%; 11 patients (18%) required other procedures for stent failure, with one death at 30 days. Symptom resolution was >97%. Patients with LBO had improved symptom resolution, shorter length of stay (LOS), and longer median survival than patients with SBO. Conclusions: Patients with MBO and stage IV CRC were successfully palliated with GI or OR procedures. Patients with CT-identified ascites, carcinomatosis, or multifocal obstruction were least likely to benefit from OR procedures. CT plays an important role in preoperative planning. Sound clinical judgment and improved understanding are required for optimal management of MBO. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Palliative Medicine is the property of Mary Ann Liebert, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BOWEL obstructions KW - RECTUM KW - TUMORS KW - COLON tumors KW - INTESTINAL surgery KW - ANALYSIS of variance KW - CANCER treatment KW - CHI-squared test KW - COLOSTOMY KW - COMPUTER software KW - DEMOGRAPHY KW - DIGESTIVE organs -- Examination KW - ENDOSCOPIC surgery KW - ENDOSCOPY KW - FISHER exact test KW - LENGTH of stay in hospitals KW - MULTIVARIATE analysis KW - OUTCOME assessment (Medical care) KW - PALLIATIVE treatment KW - REGRESSION analysis KW - STATISTICS KW - T-test (Statistics) KW - DATA analysis KW - SPECIALTY hospitals KW - TREATMENT effectiveness KW - MEDICAL records KW - RESEARCH KW - RETROSPECTIVE studies KW - FEEDING tubes KW - SYMPTOMS KW - TREATMENT KW - NEW York (State) N1 - Accession Number: 61845365; Dalal, Kimberly Moore 1,2,3 Gollub, Marc J. 4 Miner, Thomas J. 5 Wong, W. Douglas 1 Gerdes, Hans 6 Schattner, Mark A. 6 Jaques, David P. 1 Temple, Larissa K.F. 1; Email Address: templel@mskcc.org; Affiliation: 1: Department of Surgery, Brown University, Rhode Island Hospital, Providence, Rhode Island 2: Department of Surgery, David Grant United States Air Force Medical Center, Fairfield, California 3: Department of Surgery, University of California-San Francisco Medical Center, San Francisco, California 4: Department of Radiology, Brown University, Rhode Island Hospital, Providence, Rhode Island 5: Department of Surgery, Warren Alpert Medical School, Brown University, Rhode Island Hospital, Providence, Rhode Island 6: Division of Gastroenterology, Memorial Sloan-Kettering Cancer Center, New York, New York; Source Info: Jul2011, Vol. 14 Issue 7, p822; Subject Term: BOWEL obstructions; Subject Term: RECTUM; Subject Term: TUMORS; Subject Term: COLON tumors; Subject Term: INTESTINAL surgery; Subject Term: ANALYSIS of variance; Subject Term: CANCER treatment; Subject Term: CHI-squared test; Subject Term: COLOSTOMY; Subject Term: COMPUTER software; Subject Term: DEMOGRAPHY; Subject Term: DIGESTIVE organs -- Examination; Subject Term: ENDOSCOPIC surgery; Subject Term: ENDOSCOPY; Subject Term: FISHER exact test; Subject Term: LENGTH of stay in hospitals; Subject Term: MULTIVARIATE analysis; Subject Term: OUTCOME assessment (Medical care); Subject Term: PALLIATIVE treatment; Subject Term: REGRESSION analysis; Subject Term: STATISTICS; Subject Term: T-test (Statistics); Subject Term: DATA analysis; Subject Term: SPECIALTY hospitals; Subject Term: TREATMENT effectiveness; Subject Term: MEDICAL records; Subject Term: RESEARCH; Subject Term: RETROSPECTIVE studies; Subject Term: FEEDING tubes; Subject Term: SYMPTOMS; Subject Term: TREATMENT; Subject Term: NEW York (State); NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 622310 Specialty (except Psychiatric and Substance Abuse) Hospitals; Number of Pages: 7p; Illustrations: 5 Charts; Document Type: Article L3 - 10.1089/jpm.2010.0506 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61845365&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hengeveld, Derek W. AU - Braun, James E. AU - Groll, Eckhard A. AU - Williams, Andrew D. T1 - Optimal Placement of Electronic Components to Minimize Heat Flux Nonuniformities. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2011/07//Jul/Aug2011 VL - 48 IS - 4 M3 - Article SP - 556 EP - 563 SN - 00224650 AB - Isothermalization of satellite panels contributes positively to system thermal performance. Although technology innovations provide one solution path, an alternative method that has not received much attention is simply optimized component placement. The present approach provides a fast method for determining optimized component placement over a rectangular surface that approaches a uniform distribution of heat flux. The approach presented in this paper is especially useful in situations in which limited or no thermophysical properties and/or environmental conditions are readily available. The resulting methodology can be used in a variety of industries, including microelectronics and satellite development. A companion Technical Note (Hengeveld, D., Braun, J., Groll, E., and Williams, A., "Optimal Distribution of Electronic Components to Balance Environmental Fluxes," Journal of Spacecraft and Rockets, Vol. 484, 2011, pp. 694-697. doi:10.2514/1.51063) addresses the problem of distributing individual components to individual panels of a satellite. When combined, the two methodologies provide an overall approach for minimizing temperature distribution across an entire satellite structure. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT flux KW - HEAT transfer KW - TECHNOLOGICAL innovations KW - TEMPERATURE KW - ELECTRONICS N1 - Accession Number: 65055536; Hengeveld, Derek W. 1 Braun, James E. 2 Groll, Eckhard A. 2 Williams, Andrew D. 3; Affiliation: 1: LoadPath, Albuquerque, New Mexico 87108 2: Purdue University, West Lafayette, Indiana 47907 3: U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117; Source Info: Jul/Aug2011, Vol. 48 Issue 4, p556; Subject Term: HEAT flux; Subject Term: HEAT transfer; Subject Term: TECHNOLOGICAL innovations; Subject Term: TEMPERATURE; Subject Term: ELECTRONICS; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 8p; Document Type: Article L3 - 10.2514/1.47507 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65055536&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yingtao Liu AU - Seung Bum Kim AU - Chattopadhyay, Aditi AU - Doyle, Derek T1 - Application of System-Identification Techniques to Health Monitoring of On-Orbit Satellite Boom Structures. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2011/07//Jul/Aug2011 VL - 48 IS - 4 M3 - Article SP - 589 EP - 598 SN - 00224650 AB - The integration of composites into spacecraft is challenged by the risk of damage initiation and propagation during storage, launch, and service life. Elastically deployable composite booms are being developed for space utility. Matrix cracks are considered a primary form of damage caused by packaging before launch. However, while on orbit, most damages are induced by the environmental effects on the polymers. A well-developed structural health monitoring system will provide information for the dynamic control of the satellite and the condition of the deployable mechanisms on the space vehicle. A structural health monitoring methodology, based on the system-identification techniques, is proposed to identify the structural degradation in laminated composite booms. Nondestructive evaluation techniques, frequency-response analysis and autoregressive with exogenous input models are used to approximate the transfer functions between input and output sensing signals. Structural degradation is identified by examining the change of transfer functions at different storage states. A single-input/single-output approach is adopted in this paper. The proposed methodology is validated through experimentation in which matrix cracking is gradually induced by packaging the sample. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles KW - NAVIGATION (Astronautics) KW - SPACE flight KW - AERONAUTICS KW - POLYMERS N1 - Accession Number: 65055540; Yingtao Liu 1 Seung Bum Kim 1 Chattopadhyay, Aditi 1 Doyle, Derek 2; Affiliation: 1: Arizona State University, Tempe, Arizona 85287 2: U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117; Source Info: Jul/Aug2011, Vol. 48 Issue 4, p589; Subject Term: SPACE vehicles; Subject Term: NAVIGATION (Astronautics); Subject Term: SPACE flight; Subject Term: AERONAUTICS; Subject Term: POLYMERS; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.2514/1.51818 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65055540&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hengeveld, Derek W. AU - Braun, James E. AU - Groll, Eckhard A. AU - Williams, Andrew D. T1 - Optimal Distribution of Electronic Components to Balance Environmental Fluxes. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2011/07//Jul/Aug2011 VL - 48 IS - 4 M3 - Article SP - 694 EP - 697 SN - 00224650 AB - The article presents a study about achieving a balance distribution of heat flux in a spacecraft. The idea is to determine the optimal distribution of electronic components in the exterior panels through a simplified computational tool. Explanation of the optimization problem and the algorithm employed are provided. Conclusion show figures for reduced maximum temperatures, increased minimum temperatures, and range of difference between them. KW - HEAT flux KW - SPACE vehicles KW - HEAT transfer KW - MATHEMATICAL optimization KW - TEMPERATURE N1 - Accession Number: 65055551; Hengeveld, Derek W. 1 Braun, James E. 2 Groll, Eckhard A. 2 Williams, Andrew D. 3; Affiliation: 1: LoadPath, Albuquerque, New Mexico 87108 2: Purdue University, West Lafayette, Indiana 47907 3: U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117; Source Info: Jul/Aug2011, Vol. 48 Issue 4, p694; Subject Term: HEAT flux; Subject Term: SPACE vehicles; Subject Term: HEAT transfer; Subject Term: MATHEMATICAL optimization; Subject Term: TEMPERATURE; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.2514/1.51063 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65055551&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Strang, Adam J. AU - Knott, Benjamin A. AU - Funke, Gregory J. AU - Russell, Sheldon M. AU - Miller, Brent T. AU - Dukes, Allen W. AU - Courtice, April M. AU - Lyons, Joseph AU - Brown, Rebecca D. AU - Hyson, James AU - Bolia, Robert S. T1 - Collaboration Technologies Improve Performance and Communication in Air Battle Management. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2011/07// VL - 23 IS - 4 M3 - Article SP - 390 EP - 409 PB - Taylor & Francis Ltd SN - 08995605 AB - Team communication is critical for Air Battle Management (ABM). In this study, two communication tools (text chat and electronic whiteboard) and two team resource aids (tabular and graphical displays) were introduced during simulated ABM to supplement radio communication. Results showed that combined chat and virtual whiteboard improved team performance, decreased number and duration of radio transmissions, but had mixed effects on workload. In addition, the graphical resource display improved team performance, decreased number and duration of radio transmissions, and reduced workload compared to the tabular display. These findings indicate that collaboration technologies introduced in this experiment may benefit military operations. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMMUNICATION -- Methodology KW - AIR travel KW - ANALYSIS of variance KW - COMPUTER simulation KW - COMPUTER software KW - COMPUTERS KW - ELECTRONICS KW - EXPERIMENTAL design KW - INTERPROFESSIONAL relations KW - PSYCHOLOGY of movement KW - RADIO (Medium) KW - MILITARY personnel -- Psychology KW - STATISTICS KW - WAR KW - TEAMS in the workplace KW - DATA analysis KW - EFFECT sizes (Statistics) KW - REPEATED measures design N1 - Accession Number: 62667852; Strang, Adam J. 1 Knott, Benjamin A. 2 Funke, Gregory J. 2 Russell, Sheldon M. 2 Miller, Brent T. 2 Dukes, Allen W. 2 Courtice, April M. 2 Lyons, Joseph 2 Brown, Rebecca D. 3 Hyson, James 3 Bolia, Robert S. 4; Affiliation: 1: Consortium Research Fellows Program, Alexandria, Virginia 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 3: Ball Aerospace and Technologies Corporation, Dayton, Ohio 4: Office of Naval Research Global, Tokyo, Japan; Source Info: 2011, Vol. 23 Issue 4, p390; Subject Term: COMMUNICATION -- Methodology; Subject Term: AIR travel; Subject Term: ANALYSIS of variance; Subject Term: COMPUTER simulation; Subject Term: COMPUTER software; Subject Term: COMPUTERS; Subject Term: ELECTRONICS; Subject Term: EXPERIMENTAL design; Subject Term: INTERPROFESSIONAL relations; Subject Term: PSYCHOLOGY of movement; Subject Term: RADIO (Medium); Subject Term: MILITARY personnel -- Psychology; Subject Term: STATISTICS; Subject Term: WAR; Subject Term: TEAMS in the workplace; Subject Term: DATA analysis; Subject Term: EFFECT sizes (Statistics); Subject Term: REPEATED measures design; NAICS/Industry Codes: 481111 Scheduled Passenger Air Transportation; NAICS/Industry Codes: 481110 Scheduled air transportation; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 443142 Electronics Stores; NAICS/Industry Codes: 334111 Electronic Computer Manufacturing; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 515111 Radio Networks; Number of Pages: 20p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1080/08995605.2011.589348 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62667852&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Firmino, A. AU - Grote, J. G. AU - Kajzar, F. AU - Rau, I. AU - Pawlicka, A. T1 - Application of DNA In Electrochromic Cells with Switchable Transmission. JO - Nonlinear Optics, Quantum Optics: Concepts in Modern Optics JF - Nonlinear Optics, Quantum Optics: Concepts in Modern Optics Y1 - 2011/07// VL - 42 IS - 3/4 M3 - Article SP - 181 EP - 201 SN - 15430537 AB - The deoxyribonucleic acid (DNA) is an abundant, renewable, natural macromolecule with very good biodegradation abilities and can be used as interesting, efficient gel polymer electrolytes (GPEs) with high ionic conductivity and good stability. In this paper we report the ionic conductivity and transmittance measurements results of GPEs membranes based on plasticized DNA. The ionic conductivity at room temperature is in the range of 10-4-10-5 S/cm and increases linearly as function of temperature obeying predominantly an Arrhenius law. We show also that the DNA - based GPEs can be applied in small switchable transmission electrochromic cells, showing good electrochemical reversibility and change of color from transparent to blue. Moreover good conductivity, combined with the large transparency range and good adhesion to the electrodes, make DNA very promising materials to be used as gel electrolytes in electrochromic devices. The obtained results with DNA based membranes are compared with those got with usually used gelatin. [ABSTRACT FROM AUTHOR] AB - Copyright of Nonlinear Optics, Quantum Optics: Concepts in Modern Optics is the property of Old City Publishing, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROCHROMIC devices KW - DNA KW - MACROMOLECULES KW - BIODEGRADATION KW - IONIC conductivity KW - ELECTROCHEMICAL analysis KW - GELATIN KW - CELL membranes KW - DNA membrane KW - Electrochromic cell KW - gel electrolyte KW - gelatin KW - ionic conductivity KW - smart window N1 - Accession Number: 71823181; Firmino, A. 1 Grote, J. G. 2 Kajzar, F. 3,4 Rau, I. 3 Pawlicka, A. 1; Email Address: agnieszka@iqsc.usp.br; Affiliation: 1: IQSC, Universidade de São Paulo, C. P. 780, CEP 13560-970, São Carlos-SP, Brazil 2: Air Force Research Laboratory, AFRL/RXPS ,3005 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433-7707 3: Faculty of Applied Chemistry and Materials Science, University Politehnica Bucharest, Bucharest, Romania 4: Université d'Angers, Institut des Sciences et Technologies Molécutaires d'Angers, MOLTECH Anjou - UMR CNRS 6200 Equipe Interaction Moléculaire Optique non linéaire et Structuration MINOS 2, Bd Lavoisier, 49045 Angers cedex, France; Source Info: 2011, Vol. 42 Issue 3/4, p181; Subject Term: ELECTROCHROMIC devices; Subject Term: DNA; Subject Term: MACROMOLECULES; Subject Term: BIODEGRADATION; Subject Term: IONIC conductivity; Subject Term: ELECTROCHEMICAL analysis; Subject Term: GELATIN; Subject Term: CELL membranes; Author-Supplied Keyword: DNA membrane; Author-Supplied Keyword: Electrochromic cell; Author-Supplied Keyword: gel electrolyte; Author-Supplied Keyword: gelatin; Author-Supplied Keyword: ionic conductivity; Author-Supplied Keyword: smart window; NAICS/Industry Codes: 311990 All other food manufacturing; NAICS/Industry Codes: 311999 All Other Miscellaneous Food Manufacturing; Number of Pages: 21p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71823181&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rau, Ileana AU - Czaplicki, Robert AU - Derkowska, Beata AU - Grote, James G. AU - Kajzar, Francois AU - Krupka, Oksana AU - Sahraoui, Bouchta T1 - Nonlinear Optical Properties of Functionalized DNA-CTMA complexes. JO - Nonlinear Optics, Quantum Optics: Concepts in Modern Optics JF - Nonlinear Optics, Quantum Optics: Concepts in Modern Optics Y1 - 2011/07// VL - 42 IS - 3/4 M3 - Article SP - 283 EP - 323 SN - 15430537 AB - Nonlinear optical properties of functionalized deoxyribonucleic acid (DNA) are reviewed and discussed. The studies were performed on thin films of DNA-CTMA and DNA-CTMA complex doped with: a charge transfer molecules DR1, π conjugated with 2D (cobalt phthalocyanine) and 3D delocalization (C60 derivative PCBM). The NLO properties of these compounds were studied by optical third harmonic generation at 1064.2 nm fundamental wavelength and by degenerate four wave mixing techniques at 532 nm by nanosecond and picosecond pulsed lasers, respectively. Fast THG Χ(3) (--3ω; ω, ω, ω) as well as the real and imaginary parts of Kerr Χ(3) (--ω;ω, --ω, ω) susceptibilities were determined. The studies show that DNA, similarly as synthetic polymers, can be used as matrix for highly active NLO chromophores. A peculiar behaviour is observed at low dopant level which is interpreted as due to the two photon resonance and its position dependence on the doping mechanism. [ABSTRACT FROM AUTHOR] AB - Copyright of Nonlinear Optics, Quantum Optics: Concepts in Modern Optics is the property of Old City Publishing, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR optics KW - OPTICAL properties KW - DNA KW - PHTHALOCYANINES KW - CHROMOPHORES KW - PHOTONS KW - WAVELENGTHS KW - cobalt phthalocyanine KW - DFWM KW - DNA-CTMA KW - DR1 KW - functionalized DNA-CTMA KW - NLO properties KW - nonlinear absorption KW - PCBM KW - third harmonic generation N1 - Accession Number: 71823186; Rau, Ileana 1; Email Address: ileana_brandusa@yahoo.com Czaplicki, Robert 2,3 Derkowska, Beata 4 Grote, James G. 5 Kajzar, Francois 1,2 Krupka, Oksana 6 Sahraoui, Bouchta 2; Affiliation: 1: POLITEHNICA University of Bucharest, Faculty of Applied Chemistry and Materials Science, Str. Polizu nr. 1, Bucharest, Romania 2: Université d'Angers, Institut des Sciences et Technologies Moléculaires d'Angers, MOLTECH Anjou - UMR CNRS 6200, Equipe Interaction Moléculaire Optique non linéaire et Structuration MINOS, 2, Bd Lavoisier, 49045 Angers cedex, France 3: Tampere University of Technology, Department of Physics, Optics Laboratory, P. O. Box 692, FI-33IO1 Tampere, Finland 4: Institute of Physics, N. Copernicus University, Grudziądzka 5/7, 87-100 Toruń, Poland 5: Air Force Research Laboratory Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, 3005 Hobson Way, Dayton, OH 45433-7707, USA 6: Kiev National Taras Shevchenko University, Macromolecular Chemistry Department, Volodymyrska street, 64, 01033 Kiev, Ukraine; Source Info: 2011, Vol. 42 Issue 3/4, p283; Subject Term: NONLINEAR optics; Subject Term: OPTICAL properties; Subject Term: DNA; Subject Term: PHTHALOCYANINES; Subject Term: CHROMOPHORES; Subject Term: PHOTONS; Subject Term: WAVELENGTHS; Author-Supplied Keyword: cobalt phthalocyanine; Author-Supplied Keyword: DFWM; Author-Supplied Keyword: DNA-CTMA; Author-Supplied Keyword: DR1; Author-Supplied Keyword: functionalized DNA-CTMA; Author-Supplied Keyword: NLO properties; Author-Supplied Keyword: nonlinear absorption; Author-Supplied Keyword: PCBM; Author-Supplied Keyword: third harmonic generation; NAICS/Industry Codes: 325130 Synthetic Dye and Pigment Manufacturing; Number of Pages: 41p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71823186&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, S. I. AU - Dimiduk, D. M. AU - Woodward, C. AU - Parthasarathy, T. A. T1 - On the Escaig obstacle hypothesis for cross-slip in face-centered-cubic materials. JO - Philosophical Magazine Letters JF - Philosophical Magazine Letters Y1 - 2011/07// VL - 91 IS - 7 M3 - Article SP - 452 EP - 457 PB - Taylor & Francis Ltd SN - 09500839 AB - There is a significant body of literature wherein a linear approximation of Escaig's model is used to justify the large experimentally measured activation-volumes for cross-slip in face-centered-cubic copper. Here, by examining the error between the linear approximation and the original theory, we show that this explanation is not satisfactory. The calculated value for activation volume in copper, using Escaig's original equations, yields ∼60b3 (b = Burgers vector) while the linear approximation yields 200b3, the latter result fortuitously matching the experimental values. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Magazine Letters is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - APPROXIMATION algorithms KW - COPPER KW - EQUATIONS KW - STRAINS & stresses (Mechanics) KW - HYPOTHESIS KW - DISLOCATIONS in metals KW - MATHEMATICAL models KW - activation volume KW - analytical equations KW - copper KW - cross-slip KW - glide stresses N1 - Accession Number: 62667406; Rao, S. I. 1 Dimiduk, D. M. 2 Woodward, C. 2 Parthasarathy, T. A. 1; Affiliation: 1: UES, Inc., Dayton, OH 45432-1894, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, OH 45433-7817, USA; Source Info: Jul2011, Vol. 91 Issue 7, p452; Subject Term: APPROXIMATION algorithms; Subject Term: COPPER; Subject Term: EQUATIONS; Subject Term: STRAINS & stresses (Mechanics); Subject Term: HYPOTHESIS; Subject Term: DISLOCATIONS in metals; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: activation volume; Author-Supplied Keyword: analytical equations; Author-Supplied Keyword: copper; Author-Supplied Keyword: cross-slip; Author-Supplied Keyword: glide stresses; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; Number of Pages: 6p; Illustrations: 1 Chart, 1 Graph; Document Type: Article L3 - 10.1080/09500839.2011.581703 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62667406&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reinerman-Jones, Lauren Elizabeth AU - Matthews, Gerald AU - Langheim, Lisa K. AU - Warm, Joel S. T1 - Selection for vigilance assignments: a review and proposed new direction. JO - Theoretical Issues in Ergonomics Science JF - Theoretical Issues in Ergonomics Science Y1 - 2011/07// VL - 12 IS - 4 M3 - Article SP - 273 EP - 296 SN - 1463922X AB - Vigilance or sustained attention is a critical aspect of operational tasks including air-traffic control, airport security, industrial quality control and inspection, and medical screening and monitoring. Consequently, the selection of personnel for assignments involving vigilance is a key ergonomic concern. As reviewed herein, traditional approaches to personnel selection for tasks requiring vigilance have concentrated on unidimensional measures involving sensory acuity, aptitude, sex, age and personality factors. These approaches have been ineffective. In this article, we suggest an alternative approach in which the selection issue is considered in terms of a theory-driven analysis of different types of vigilance tasks and multidimensional predictors. As an example of that approach, we made use of a resource model of vigilance and measures of cerebral blood flow velocity and subjective state obtained from a short battery of high-workload tasks to successfully predict individual performance on subsequent high-workload sensory and cognitive vigilance tasks. [ABSTRACT FROM AUTHOR] AB - Copyright of Theoretical Issues in Ergonomics Science is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMPLOYEE selection KW - METHODOLOGY KW - ABILITY KW - DOPPLER ultrasonography KW - AGE distribution (Demography) KW - ATTENTION KW - AUTOMATION KW - CEREBRAL circulation KW - JOB descriptions KW - MATHEMATICAL models KW - PERSONALITY KW - SEX distribution (Demography) KW - EMPLOYEES -- Workload KW - THEORY KW - TASK performance KW - PREDICTIVE validity KW - individual differences KW - neuroergonomics KW - selection KW - stress KW - vigilance N1 - Accession Number: 62667382; Reinerman-Jones, Lauren Elizabeth 1 Matthews, Gerald 2 Langheim, Lisa K. 2 Warm, Joel S. 3; Affiliation: 1: Institute for Simulation and Training, University of Central Florida, Orlando, FL 32826, USA 2: Department of Psychology, University of Cincinnati, Cincinnati, OH 45221, USA 3: Air Force Research Laboratory (AFRL), Wright-Patterson Air Force Base, Dayton, OH, USA; Source Info: Jul2011, Vol. 12 Issue 4, p273; Subject Term: EMPLOYEE selection; Subject Term: METHODOLOGY; Subject Term: ABILITY; Subject Term: DOPPLER ultrasonography; Subject Term: AGE distribution (Demography); Subject Term: ATTENTION; Subject Term: AUTOMATION; Subject Term: CEREBRAL circulation; Subject Term: JOB descriptions; Subject Term: MATHEMATICAL models; Subject Term: PERSONALITY; Subject Term: SEX distribution (Demography); Subject Term: EMPLOYEES -- Workload; Subject Term: THEORY; Subject Term: TASK performance; Subject Term: PREDICTIVE validity; Author-Supplied Keyword: individual differences; Author-Supplied Keyword: neuroergonomics; Author-Supplied Keyword: selection; Author-Supplied Keyword: stress; Author-Supplied Keyword: vigilance; Number of Pages: 24p; Illustrations: 1 Chart; Document Type: Article L3 - 10.1080/14639221003622620 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62667382&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lindsay, Douglas R. T1 - Using I-O to Fight a War. JO - TIP: The Industrial-Organizational Psychologist JF - TIP: The Industrial-Organizational Psychologist Y1 - 2011/07// VL - 49 IS - 1 M3 - Article SP - 23 EP - 27 SN - 07391110 AB - The article discusses the advantages of industrial-organizational (I-O) psychology to the military due to the need to have the right people in the right place at the right time with the right skill set. The relationship between I-O and the military is evident in projects like Army Alpha and the creation of the American Psychological Association's Division of Military Psychology. The measurement of national attitudes and beliefs like in Afghanistan is conducted using polling and atmospherics. KW - INDUSTRIAL psychology KW - MILITARY psychology KW - JOB skills KW - SOCIAL attitudes KW - UNITED States KW - UNITED States. Army KW - AMERICAN Psychological Association N1 - Accession Number: 66331398; Lindsay, Douglas R. 1; Affiliation: 1: United States Air Force Academy; Source Info: Jul2011, Vol. 49 Issue 1, p23; Subject Term: INDUSTRIAL psychology; Subject Term: MILITARY psychology; Subject Term: JOB skills; Subject Term: SOCIAL attitudes; Subject Term: UNITED States; Company/Entity: UNITED States. Army DUNS Number: Company/Entity: AMERICAN Psychological Association DUNS Number: 086352101; NAICS/Industry Codes: 928110 National Security; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66331398&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cimpoiasu, E. AU - Haugan, T. J. AU - Varanasi, C. V. AU - Levin, G. A. AU - Barnes, P. N. T1 - Effect of Oxygen Depletion on the Pinning Properties of YBa2Cu3Ox Films With Nanoinclusions. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2011/06/30/ VL - 21 IS - 3 M3 - Article SP - 3218 EP - 3221 SN - 10518223 AB - Applications of YBa2Cu3Ox (YBCO) coated conductors require strong vortex pinning to ensure a non-dissipative state over a large range of temperatures and magnetic field values. Incorporations of nanoparticles and nanorods have generally resulted in a substantial increase of pinning, but the actual mechanism producing this increase is not fully understood. This report addresses the origin of the enhanced pinning through comparative resistive measurements in the mixed state of thin films of YBCO, YBCO doped with Y2O3 nanoparticles, and YBCO doped with BaSnO3 nanorods. In order to study the effect of oxygen, all three kinds of samples have been annealed in air at 420^\circC. We have extracted and compared the resistive irreversibility lines before and after annealing. Our results indicate that while the nanoinclusions in the fully-oxygenated samples improve the pinning strength over that in the pure YBCO sample, the pinning enhancement essentially vanishes upon oxygen depletion. This is true for both pinning structures, nanorods and nanoparticles. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTING magnets KW - NANOPARTICLES KW - OXYGEN KW - THIN films KW - TEMPERATURE measurements KW - MAGNETORESISTANCE KW - SUPERCONDUCTORS KW - CRITICAL currents KW - Anisotropic magnetoresistance KW - Critical current density KW - Nanoparticles KW - pinning KW - Shape KW - Superconducting magnets KW - superconductor KW - Temperature measurement KW - vortex dynamics KW - Yttrium barium copper oxide N1 - Accession Number: 60968702; Cimpoiasu, E. 1 Haugan, T. J. 2 Varanasi, C. V. 3 Levin, G. A. 2 Barnes, P. N. 2; Affiliation: 1: Department of Physics, United States Naval Academy, Annapolis, MD, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 3: US Army Research Office, Research Triangle Park, NC, USA; Source Info: Jun2011, Vol. 21 Issue 3, p3218; Subject Term: SUPERCONDUCTING magnets; Subject Term: NANOPARTICLES; Subject Term: OXYGEN; Subject Term: THIN films; Subject Term: TEMPERATURE measurements; Subject Term: MAGNETORESISTANCE; Subject Term: SUPERCONDUCTORS; Subject Term: CRITICAL currents; Author-Supplied Keyword: Anisotropic magnetoresistance; Author-Supplied Keyword: Critical current density; Author-Supplied Keyword: Nanoparticles; Author-Supplied Keyword: pinning; Author-Supplied Keyword: Shape; Author-Supplied Keyword: Superconducting magnets; Author-Supplied Keyword: superconductor; Author-Supplied Keyword: Temperature measurement; Author-Supplied Keyword: vortex dynamics; Author-Supplied Keyword: Yttrium barium copper oxide; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TASC.2010.2090120 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60968702&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lu, Rongtao AU - Christianson, Caleb AU - Dizon, Jonathan AU - Wu, Judy AU - Haugan, Timothy AU - Barnes, Paul AU - Baca, F. Javier T1 - Investigation of Dynamic Behaviors of Low-Level Dissipation at YBa2Cu3O7 Grain Boundaries Using Low-Temperature Near-Field Scanning Microwave Microscopy. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2011/06/30/ VL - 21 IS - 3 M3 - Article SP - 3238 EP - 3242 SN - 10518223 AB - Near-field scanning microwave microscopy (NSMM) provides a unique nondestructive approach for detection of local dissipation with high sensitivity and high spatial resolution. With recently improved NSMM probes of spatial resolution of up to 400 nm (\sim 10^-6 wavelength), detection of dissipation was achieved on YBCO microbridges at currents more than three orders of magnitude below the Jc(T). In this work, we report characterization of the dynamic behavior of low-level dissipation at the grain boundary of YBa2Cu3O7-\delta microbridges as function of time and applied electrical current. On higher-angle grain boundary, the dissipation develops rapidly with increasing current and shows approximately linear dependence on current. On lower-angle grain boundary, nonlinear features were observed and attributed to bi-modal pattern of dissipation evolution of nucleation of isolated hot spots and their evolution. Comparison with the similar NSMM+IV measurement made on the “bulk” part of the same YBa2Cu3O7-\delta microbridges on a reduced temperature scale shows higher dissipation on the grain boundary can be mostly attributed to the lower Tc values on grain boundaries. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH temperature superconductors KW - ENERGY dissipation KW - CRYSTAL grain boundaries KW - TEMPERATURE measurements KW - BARIUM compounds KW - DENSITY currents KW - MICROWAVE imaging KW - PROBES (Electronic instruments) KW - NUCLEATION KW - Current density KW - Current measurement KW - Grain boundaries KW - grain boundary KW - high-temperature superconductors KW - microwave imaging KW - Microwave measurements KW - Microwave theory and techniques KW - Probes KW - Temperature measurement KW - Yttrium barium copper oxide N1 - Accession Number: 60968739; Lu, Rongtao 1 Christianson, Caleb 1 Dizon, Jonathan 1 Wu, Judy 1 Haugan, Timothy 2 Barnes, Paul 2 Baca, F. Javier 3; Affiliation: 1: Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas, USA 2: Air Force Research Laboratory, Dayton, Ohio, USA 3: Los Alamos National Laboratory, Los Alamos, NM, USA; Source Info: Jun2011, Vol. 21 Issue 3, p3238; Subject Term: HIGH temperature superconductors; Subject Term: ENERGY dissipation; Subject Term: CRYSTAL grain boundaries; Subject Term: TEMPERATURE measurements; Subject Term: BARIUM compounds; Subject Term: DENSITY currents; Subject Term: MICROWAVE imaging; Subject Term: PROBES (Electronic instruments); Subject Term: NUCLEATION; Author-Supplied Keyword: Current density; Author-Supplied Keyword: Current measurement; Author-Supplied Keyword: Grain boundaries; Author-Supplied Keyword: grain boundary; Author-Supplied Keyword: high-temperature superconductors; Author-Supplied Keyword: microwave imaging; Author-Supplied Keyword: Microwave measurements; Author-Supplied Keyword: Microwave theory and techniques; Author-Supplied Keyword: Probes; Author-Supplied Keyword: Temperature measurement; Author-Supplied Keyword: Yttrium barium copper oxide; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TASC.2010.2090030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60968739&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cherry, M. AU - Mooers, R. AU - Knopp, J. AU - Aldrin, J. C. AU - Sabbagh, H. A. AU - Boehnlein, T. T1 - LOW FREQUENCY EDDY CURRENT FINITE ELEMENT MODEL VALIDATION AND BENCHMARK STUDIES. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2011/06/23/ VL - 1335 IS - 1 M3 - Article SP - 357 EP - 364 PB - American Institute of Physics SN - 0094243X AB - A finite element method (FEM) model was created to calculate the change in impedance of a coil due to the presence of a notch in a plate. The rectangular notches were created via electrical discharge machining (EDM) in a thick aluminum plate and were positioned at normal and oblique angles (10, 20, and 30 degrees) with respect to the vertical axis of the coil. The FEM method was chosen for this model due to its ability to solve problems in complicated geometries with the use of irregular mesh elements to discretize the solution domain. The change in impedance was calculated from the field variables in the simulation for each probe position along the parallel axis of the plate. The error between the model and the experimental data was approximately 5% for the majority of cases. The validated model was used to investigate more complex problems. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FREQUENCIES of oscillating systems KW - ELECTRIC currents KW - FINITE element method KW - ELECTRIC coils KW - ELECTRIC impedance KW - ELECTRIC metal-cutting KW - NUMERICAL grid generation (Numerical analysis) N1 - Accession Number: 61468485; Cherry, M. 1 Mooers, R. 2 Knopp, J. 1 Aldrin, J. C. 3 Sabbagh, H. A. 4 Boehnlein, T. 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory 2: University of Dayton Research Institute, Dayton, OH, USA 3: Computational Tools, Gurnee, IL, USA 4: Victor Technologies, LLC, Bloomington, IN, USA; Source Info: 6/23/2011, Vol. 1335 Issue 1, p357; Subject Term: FREQUENCIES of oscillating systems; Subject Term: ELECTRIC currents; Subject Term: FINITE element method; Subject Term: ELECTRIC coils; Subject Term: ELECTRIC impedance; Subject Term: ELECTRIC metal-cutting; Subject Term: NUMERICAL grid generation (Numerical analysis); NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 8p; Illustrations: 1 Color Photograph, 3 Diagrams, 6 Graphs; Document Type: Article L3 - 10.1063/1.3591875 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61468485&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Knopp, Jeremy S. AU - Blodgett, Mark P. AU - Sabbagh, Harold A. T1 - UNCERTAINTY PROPAGATION IN EDDY CURRENT NDE INVERSE PROBLEMS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2011/06/23/ VL - 1335 IS - 1 M3 - Article SP - 631 EP - 638 PB - American Institute of Physics SN - 0094243X AB - The probabilistic collocation method (PCM) was introduced to efficiently propagate the distributions of input parameters for eddy current NDE inverse problems. A multilevel approach was also considered to simultaneously address input parameter variability and the uniqueness of the inversion result. A case study is presented for the problem of characterizing material loss in a multi-layer structure with varying liftoff and material properties. The performance and sensitivity of the uncertainty propagation method using PCM was evaluated under varying conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - ELECTRIC currents KW - INVERSE problems (Differential equations) KW - COLLOCATION methods KW - MULTILEVEL models (Statistics) KW - LAYER structure (Solids) KW - SENSITIVITY analysis KW - PERFORMANCE evaluation N1 - Accession Number: 61468448; Aldrin, John C. 1 Knopp, Jeremy S. 2 Blodgett, Mark P. 2 Sabbagh, Harold A. 3; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 3: Victor Technologies LLC, Bloomington, IN 47401, USA; Source Info: 6/23/2011, Vol. 1335 Issue 1, p631; Subject Term: NONDESTRUCTIVE testing; Subject Term: ELECTRIC currents; Subject Term: INVERSE problems (Differential equations); Subject Term: COLLOCATION methods; Subject Term: MULTILEVEL models (Statistics); Subject Term: LAYER structure (Solids); Subject Term: SENSITIVITY analysis; Subject Term: PERFORMANCE evaluation; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Illustrations: 2 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1063/1.3591909 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61468448&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blackshire, James L. AU - Modic, Aaron T1 - SURFACE-BREAKING CRACK DEPTH ASSESSMENT USING NEAR-FIELD SURFACE ACOUSTIC WAVE SIGNAL RESPONSE. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2011/06/23/ VL - 1335 IS - 1 M3 - Article SP - 681 EP - 688 PB - American Institute of Physics SN - 0094243X AB - A method for determining the local depth of a surface-breaking crack is presented based on near-field surface acoustic wave signal responses. Finite element models were used to study the forward problem, where the characteristic response of a surface acoustic wave incident on a surface-breaking crack oriented normal to the material surface was investigated. Experimental validation of the modeling predictions was accomplished using a wedge transducer for surface wave generation and a scanning laser vibrometry system for surface wave detection. The characteristic near-field amplitude response in reflection and in transmission showed several unique features, which are attributed to the superposition of incident, transmitted, reflected, and scattered energy fields. In the d/lambda range of 0.1-0.8, an approximate linear trend was observed, which provides an opportunity to characterize and quantify local crack depth based on a simple linear inversion method. Finite element and experimental evidence of this effect are presented for surface-breaking slots with depths between 300 um to 450 um. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACES (Technology) KW - FRACTURE mechanics KW - ACOUSTIC surface waves KW - SIGNAL processing KW - FINITE element method KW - TRANSDUCERS KW - SUPERPOSITION principle (Physics) KW - SCATTERING (Physics) N1 - Accession Number: 61468441; Blackshire, James L. 1 Modic, Aaron 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433; Source Info: 6/23/2011, Vol. 1335 Issue 1, p681; Subject Term: SURFACES (Technology); Subject Term: FRACTURE mechanics; Subject Term: ACOUSTIC surface waves; Subject Term: SIGNAL processing; Subject Term: FINITE element method; Subject Term: TRANSDUCERS; Subject Term: SUPERPOSITION principle (Physics); Subject Term: SCATTERING (Physics); NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; Number of Pages: 8p; Illustrations: 2 Diagrams, 6 Graphs; Document Type: Article L3 - 10.1063/1.3591915 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61468441&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cooney, Adam T. AU - Flattum-Riemers, Richard Y. AU - Scott, Benjamin J. T1 - CHARACTERIZATION OF MATERIAL DEGRADATION IN CERAMIC MATRIX COMPOSITES USING INFRARED REFLECTANCE SPECTROSCOPY. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2011/06/23/ VL - 1335 IS - 1 M3 - Article SP - 950 EP - 955 PB - American Institute of Physics SN - 0094243X AB - Ceramic matrix composite materials for thermal protection systems are required to maintain operational performance in extreme thermal and mechanical environments. In-service inspection of materials capable of assessing the degree and extent of damage and degradation will be required to ensure the safety and readiness of future air vehicles. Infrared reflectance spectroscopy is an established material characterization technique capable of extracting information regarding the chemical composition of substances. The viability of this technique as a potentially powerful nondestructive evaluation method capable of monitoring degradation in thermal protection system materials subjected to extreme mechanical and thermal environments is analyzed. Several oxide-based and non-oxide-based ceramic matrix composite materials were stressed to failure in a high temperature environment and subsequently measured using infrared reflectance spectroscopy. Spectral signatures at locations along the length of the samples were compared resulting in distinct and monotonic reflectance peak changes while approaching the fracture point. The chemical significance of the observed signatures and the feasibility of infrared reflectance nondestructive evaluation techniques are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEFORMATIONS (Mechanics) KW - COMPOSITE materials KW - REFLECTANCE spectroscopy KW - CERAMIC materials KW - PERFORMANCE evaluation KW - THERMOPHYSICAL properties KW - MATERIALS -- Mechanical properties KW - INFRARED spectroscopy KW - NONDESTRUCTIVE testing N1 - Accession Number: 61468405; Cooney, Adam T. 1 Flattum-Riemers, Richard Y. 1 Scott, Benjamin J. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, NonDestructive Evaluation Branch, Wright-Patterson AFB, OH 2: Universal Technology Corporation, Dayton, OH; Source Info: 6/23/2011, Vol. 1335 Issue 1, p950; Subject Term: DEFORMATIONS (Mechanics); Subject Term: COMPOSITE materials; Subject Term: REFLECTANCE spectroscopy; Subject Term: CERAMIC materials; Subject Term: PERFORMANCE evaluation; Subject Term: THERMOPHYSICAL properties; Subject Term: MATERIALS -- Mechanical properties; Subject Term: INFRARED spectroscopy; Subject Term: NONDESTRUCTIVE testing; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 6p; Illustrations: 1 Color Photograph, 2 Graphs; Document Type: Article L3 - 10.1063/1.3592040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61468405&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Na, Jeong K. AU - Blodgett, Mark T1 - ULTRASONIC PROPERTIES OF LOW SOLVUS HIGH REFRACTORY (LSHR) SUPER ALLOY DISK MATERIAL. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2011/06/23/ VL - 1335 IS - 1 M3 - Article SP - 1192 EP - 1199 PB - American Institute of Physics SN - 0094243X AB - Measurements are made for ultrasonic linear and nonlinear properties of the powder metallurgy disk alloy LSHR material designed with a relatively low γ′ precipitate solvus temperature and high refractory element content. This allows versatile heat treatment processing which results in high tensile, creep and fatigue properties depending on the grain size controlled through proper selection of solution heat treatment temperatures relative to the γ′ precipitate solvus temperature. Sound velocity and attenuation for both longitudinal and shear modes at various frequencies from 5 to 20 MHz help to identify and quantify the size of transition zone nondestructively between the small grain (∼10 μm) and the large grain (∼100 μm) zones. The shear wave velocity measurements taken by aligning the transducer polarization direction parallel and perpendicular to the grain transition direction reveal some results that we do not fully understand at this time and will be the basis of future research. Similarly, measurements of the acoustic nonlinearity parameter show some variations that may originate from uncertain sources. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRASONIC testing KW - REFRACTORY materials KW - HEAT resistant alloys KW - POWDER metallurgy KW - PRECIPITATION (Chemistry) KW - TEMPERATURE effect KW - CREEP (Materials) KW - MATERIALS -- Fatigue KW - SPEED of sound KW - NONDESTRUCTIVE testing N1 - Accession Number: 61468592; Na, Jeong K. 1 Blodgett, Mark 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469, USA 2: Air Force Research Laboratory (AFRL/RXLP) Wright-Patterson AFB, Ohio 45433, USA; Source Info: 6/23/2011, Vol. 1335 Issue 1, p1192; Subject Term: ULTRASONIC testing; Subject Term: REFRACTORY materials; Subject Term: HEAT resistant alloys; Subject Term: POWDER metallurgy; Subject Term: PRECIPITATION (Chemistry); Subject Term: TEMPERATURE effect; Subject Term: CREEP (Materials); Subject Term: MATERIALS -- Fatigue; Subject Term: SPEED of sound; Subject Term: NONDESTRUCTIVE testing; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 332117 Powder Metallurgy Part Manufacturing; NAICS/Industry Codes: 327120 Clay Building Material and Refractories Manufacturing; Number of Pages: 8p; Illustrations: 1 Black and White Photograph, 4 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1063/1.3592070 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61468592&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Medina, Enrique A. AU - Lindgren, Eric A. AU - Buynak, Charles F. AU - Knopp, Jeremy S. T1 - CASE STUDIES FOR MODEL-ASSISTED PROBABILISTIC RELIABILITY ASSESSMENT FOR STRUCTURAL HEALTH MONITORING SYSTEMS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2011/06/23/ VL - 1335 IS - 1 M3 - Article SP - 1589 EP - 1596 PB - American Institute of Physics SN - 0094243X AB - This paper describes progress on the development of a protocol and presents several case studies for model-assisted probabilistic reliability assessment of structural health monitoring (SHM) technologies. The design and progress of an experimental demonstration study is presented highlighting the protocol and test plan. A simulation-based study for an SHM system incorporating vibration methods is also introduced to demonstrate the protocol process. Probability of detection and probability of correct characterization curves were generated for different transducer locations providing key insight on sensor placement and expected detection and characterization performance. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CASE study (Research) KW - PROBABILITY theory KW - RELIABILITY (Engineering) KW - STRUCTURAL health monitoring KW - SIMULATION methods & models KW - TRANSDUCERS KW - PERFORMANCE evaluation N1 - Accession Number: 61468538; Aldrin, John C. 1 Medina, Enrique A. 2 Lindgren, Eric A. 2 Buynak, Charles F. 2 Knopp, Jeremy S. 2; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: 6/23/2011, Vol. 1335 Issue 1, p1589; Subject Term: CASE study (Research); Subject Term: PROBABILITY theory; Subject Term: RELIABILITY (Engineering); Subject Term: STRUCTURAL health monitoring; Subject Term: SIMULATION methods & models; Subject Term: TRANSDUCERS; Subject Term: PERFORMANCE evaluation; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 8p; Illustrations: 3 Diagrams, 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.3592119 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61468538&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Srinivasan, Siddarth AU - Chhatre, Shreerang S. AU - Mabry, Joseph M. AU - Cohen, Robert E. AU - McKinley, Gareth H. T1 - Solution spraying of poly(methyl methacrylate) blends to fabricate microtextured, superoleophobic surfaces JO - Polymer JF - Polymer Y1 - 2011/06/22/ VL - 52 IS - 14 M3 - Article SP - 3209 EP - 3218 SN - 00323861 AB - Abstract: We describe a simple technique to prepare superhydrophobic and superoleophobic microtextured surfaces by spray coating a blend of poly(methyl methacrylate) (PMMA) and the low surface energy molecule 1H,1H,2H,2H-heptadecafluorodecyl polyhedral oligomeric silsesquioxane (fluorodecyl POSS, γ sv ≈10mN/m) using an air brush with a pressurized nitrogen stream. Scanning electron micrographs show the formation of microtextured surfaces possessing re-entrant curvature; a critical feature for obtaining liquid repellency with low surface tension liquids. The surface morphology can be tuned systematically from a corpuscular or spherical microstructure to a beads-on-string structure and finally to bundled fibers by controlling the solution concentration and molecular weight of the sprayed polymer. The oleophobicity of the resulting structures is characterized by advancing and receding contact angle measurements with liquids of a range of surface tensions. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPRAYING KW - SOLUTION (Chemistry) KW - METHYL methacrylate KW - MATERIALS -- Texture KW - MICROFABRICATION KW - HYDROPHOBIC surfaces KW - SURFACE tension KW - MICROSTRUCTURE KW - MOLECULAR weights KW - CONTACT angle KW - Fiber KW - Non-woven KW - Superhydrophobic N1 - Accession Number: 61459500; Srinivasan, Siddarth 1 Chhatre, Shreerang S. 1 Mabry, Joseph M. 2 Cohen, Robert E. 1; Email Address: recohen@mit.edu McKinley, Gareth H. 3; Email Address: gareth@mit.edu; Affiliation: 1: Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States 2: Space and Missile Propulsion Division, Air Force Research Laboratory, Edwards Air Force Base, CA 93524, United States 3: Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Source Info: Jun2011, Vol. 52 Issue 14, p3209; Subject Term: SPRAYING; Subject Term: SOLUTION (Chemistry); Subject Term: METHYL methacrylate; Subject Term: MATERIALS -- Texture; Subject Term: MICROFABRICATION; Subject Term: HYDROPHOBIC surfaces; Subject Term: SURFACE tension; Subject Term: MICROSTRUCTURE; Subject Term: MOLECULAR weights; Subject Term: CONTACT angle; Author-Supplied Keyword: Fiber; Author-Supplied Keyword: Non-woven; Author-Supplied Keyword: Superhydrophobic; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.polymer.2011.05.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61459500&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Habash Krause, L. AU - Franz, A. AU - Stevenson, A. T1 - On the application of Exploratory Data Analysis for characterization of space weather data sets JO - Advances in Space Research JF - Advances in Space Research Y1 - 2011/06/15/ VL - 47 IS - 12 M3 - Article SP - 2199 EP - 2209 SN - 02731177 AB - Abstract: This paper presents an overview of the mathematical foundations for techniques in Exploratory Data Analysis (EDA) for the purpose of investigating the relationships among the numerous variables in large sets of multivariate space weather data. Specifically, we cover techniques in Principal Components Analysis (PCA) and Common Factor Analysis (CFA). These techniques are illustrated using space weather activity indices collected during the year 2002 and the corresponding noon-time hmF2 data from the International Reference Ionosphere (IRI). A CFA is used to categorize the activity indices, and a PCA is used to derive two macro-indices of activity to ascertain the strength of solar and geomagnetic activity. These macro-indices are then used to compare and contrast IRI’s noon-time hmF2 values at six different geographic stations. It was found that the correlation between hmF2 and the macro-indices more accurately represented the variation of this correlation with latitude found in previous studies than if we used an isolated conventional index, such as SSN and AE. We also found that the daily maximum value of the Polar Cap Index was dependent on both solar and geomagnetic activity, but the closely-related cross-Polar Cap Potential was solely associated with elevated levels of geomagnetic activity, which is a unique result compared to previous studies. We argue that the discrepancy can be explained by the difference in experiment designs between the two studies. This paper demonstrates the usefulness of EDA in space weather studies of large multivariate data sets. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE environment KW - IONOSPHERE KW - PRINCIPAL components analysis KW - DATA analysis KW - MATHEMATICAL analysis KW - FACTOR analysis KW - GEOMAGNETISM KW - Common Factor Analysis KW - Exploratory Data Analysis KW - hmF2 KW - Ionosphere KW - Principle Components Analysis KW - Space weather N1 - Accession Number: 60521879; Habash Krause, L. 1; Email Address: Linda.H.Krause@nasa.gov Franz, A. 2 Stevenson, A. 2; Affiliation: 1: NASA Marshall Spaceflight Center, Space Science Office, 4207 Marshall Space Flight Center, Huntsville, AL 35808, USA 2: United States Air Force Academy, Department of Physics, 2354 Fairchild Drive, USAF Academy, CO 80840, USA; Source Info: Jun2011, Vol. 47 Issue 12, p2199; Subject Term: SPACE environment; Subject Term: IONOSPHERE; Subject Term: PRINCIPAL components analysis; Subject Term: DATA analysis; Subject Term: MATHEMATICAL analysis; Subject Term: FACTOR analysis; Subject Term: GEOMAGNETISM; Author-Supplied Keyword: Common Factor Analysis; Author-Supplied Keyword: Exploratory Data Analysis; Author-Supplied Keyword: hmF2; Author-Supplied Keyword: Ionosphere; Author-Supplied Keyword: Principle Components Analysis; Author-Supplied Keyword: Space weather; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.asr.2011.03.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60521879&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jeon, In-Yup AU - Choi, Hyun-Jung AU - Tan, Loon-Seng AU - Baek, Jong-Beom T1 - Nanocomposite prepared from in situ grafting of polypyrrole to aminobenzoyl-functionalized multiwalled carbon nanotube and its electrochemical properties. JO - Journal of Polymer Science Part A: Polymer Chemistry JF - Journal of Polymer Science Part A: Polymer Chemistry Y1 - 2011/06/15/ VL - 49 IS - 12 M3 - Article SP - 2529 EP - 2537 SN - 0887624X AB - We reported the functionalization of multiwalled carbon nanotube (MWCNT) with 4-aminobenzoic acid by a 'direct' Friedel-Crafts acylation reaction in a mild polyphosphoric acid (PPA)/phosphorous pentoxide (P2O5) medium. The resulting 4-aminobenzoyl-functionalized MWCNT (AF-MWCNT) was used as a platform for the grafting of polypyrrole (PPy) in ammonium persulfate (APS)/aqueous hydrochloric acid solution to produce PPy-grafted MWCNT (PPy- g-MWCNT) composite. After dedoping with alkaline treatment, PPy- g-MWCNT displayed 20 times higher electrical conductivity than that of PPy. The current density and cycle stability of PPy- g-MWCNT composite were also remarkably improved compared with those of PPy homopolymer, suggesting that an efficient electron transfer between PPy and MWCNT was possible through covalent links. In addition, PPy- g-MWCNT displayed high electrocatalytic activity for oxygen reduction reaction (ORR). © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011 [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Polymer Science Part A: Polymer Chemistry is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 71514908; Jeon, In-Yup 1 Choi, Hyun-Jung 1 Tan, Loon-Seng 2 Baek, Jong-Beom 1; Affiliation: 1: Interdisciplinary School of Green Energy/Institute of Advanced Materials & Devices, Ulsan National Institute of Science and Technology (UNIST), 100, Banyeon, Ulsan 689-798, South Korea 2: Nanostructured and Biological Materials Branch, Materials and Manufacturing Directorate, U.S. Air Force Research Laboratory, AFRL/RXBN, Wright-Patterson AFB, Ohio 45433; Source Info: Jun2011, Vol. 49 Issue 12, p2529; Number of Pages: 9p; Document Type: Article L3 - 10.1002/pola.24684 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71514908&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carlson, Chad G. AU - Ross, R. Brendan AU - Schafer, Jessica M. AU - Spring, Justin B. AU - Ward, Benjamin G. T1 - Full vectorial analysis of Brillouin gain in random acoustically microstructured photonic crystal fibers. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2011/06/15/ VL - 83 IS - 23 M3 - Article SP - 235110:1 EP - 235110:9 SN - 10980121 AB - We report on the fully vectorial numerical investigation of Brillouin gain in large-mode-area random acoustically microstructured photonic crystal fibers. We treated the fiber core as a linear isotropic elastic medium, resulting in an energy functional that we minimized to obtain the heterogeneous, anisotropic, and Stokes-frequency-dependent vector acoustic displacement field used to calculate the Brillouin gain spectra with a finite element method. We found that the peak Brillouin gain is dependent on the size of the acoustic domains and that a 4% spread in acoustic velocities results in peak Brillouin gain values suppressed by 8 dB relative to that of homogeneous fused silica fibers. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BRILLOUIN scattering KW - LIGHT -- Scattering KW - WAVE mechanics KW - CRYSTAL whiskers KW - MICROSTRUCTURE KW - MATTER -- Constitution N1 - Accession Number: 66800583; Carlson, Chad G. 1 Ross, R. Brendan 1 Schafer, Jessica M. 1 Spring, Justin B. 1 Ward, Benjamin G. 1; Affiliation: 1: Laser and Optics Research Center, Department of Physics, United States Air Force Academy, 2354 Fairchild Drive Suite 2A31, USAF Academy, Colorado 80840, USA; Source Info: Jun2011, Vol. 83 Issue 23, p235110:1; Subject Term: BRILLOUIN scattering; Subject Term: LIGHT -- Scattering; Subject Term: WAVE mechanics; Subject Term: CRYSTAL whiskers; Subject Term: MICROSTRUCTURE; Subject Term: MATTER -- Constitution; Number of Pages: 9p; Document Type: Article L3 - 10.1103/PhysRevB.83.235110 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66800583&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aliat, A. AU - Vedula, P. AU - Josyula, E. T1 - State-to-state modeling of radiation coupled to vibration-translation relaxation and dissociation in nonequilibrium gas flows. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2011/06/15/ VL - 83 IS - 6-2 M3 - Article SP - 67302:1 EP - 67302:4 SN - 15393755 AB - A radiation model is developed to obtain evolution of band intensities according to the state-to-state (STS) approach by considering vibration-translation and vibration-electronic jumps and dissociation. Investigation of the behavior of a nonequilibrium N2 gas flow behind a shock shows that the radiation intensity remains weak and the flow is far from radiative equilibrium. Similar intensities are predicted by pure STS and hybrid approaches based on existing radiation models. However, the coupling between physicochemical and radiative processes increases with radiation intensity. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATION KW - GAS flow KW - PHYSICS KW - MATTER -- Properties KW - VIBRATION (Mechanics) N1 - Accession Number: 67006842; Aliat, A. 1; Email Address: azizaliat@ou.edu Vedula, P. 1; Email Address: pvedula@ou.edu Josyula, E. 2; Affiliation: 1: School of Aerospace and Mechanical Engineering, University of Oklahoma, Norman, Oklahoma 73019, USA 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, USA; Source Info: Jun2011, Vol. 83 Issue 6-2, p67302:1; Subject Term: RADIATION; Subject Term: GAS flow; Subject Term: PHYSICS; Subject Term: MATTER -- Properties; Subject Term: VIBRATION (Mechanics); Number of Pages: 4p; Document Type: Article L3 - 10.1103/PhysRevE.83.067302 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67006842&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sung Hun Wee AU - Specht, Eliot D. AU - Cantoni, Claudia AU - Zuev, Yuri L. AU - Maroni, Victor AU - Winnie Wong-Ng AU - Guangyao Liu AU - Haugan, Timothy J. AU - Goyal, Amit T1 - Formation of stacking faults and their correlation with flux pinning and critical current density in Sm-doped YBa2Cu3O7-x films. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2011/06/08/ VL - 83 IS - 22 M3 - Article SP - 224520:1 EP - 224520:6 SN - 10980121 AB - A correlation between flux-pinning characteristics and stacking faults (SFs) formed by Sm substitution on Y and Ba sites was found in Sm-doped YBa2Cu3O7-δ films. It was confirmed that 223-type-SFs, Y2Ba2Cu3Ox, composed of extra Y and 0 planes aligned parallel to the ab-planes formed via Sm substitution on the Y site and increased in number with increasing Sm doping on the Ba site. The number density of 223 SFs is correlated strongly with the enhancement in ab-plane-correlated flux pinning, resulting in a sharpening of the H∣∣ab peak in the plot of critical current density versus magnetic field orientation. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS research KW - FLUX pinning KW - SUPERCONDUCTORS -- Magnetic properties KW - SEMICONDUCTOR doping KW - ELECTRIC currents N1 - Accession Number: 67006219; Sung Hun Wee 1; Email Address: wees@ornl.gov Specht, Eliot D. 1 Cantoni, Claudia 1 Zuev, Yuri L. 1,2 Maroni, Victor 3 Winnie Wong-Ng 4 Guangyao Liu 4 Haugan, Timothy J. 5 Goyal, Amit 1; Affiliation: 1: Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 2: Department of Physics, University of Tennessee, Knoxville, Tennessee 37996, USA 3: Argonne National Laboratory, Argonne, IL 60439, USA 4: Ceramic Division, National Institute of Science and Technology, Gaithersburg, MD 20899, USA 5: AFRLIRZPG, The Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Jun2011, Vol. 83 Issue 22, p224520:1; Subject Term: PHYSICS research; Subject Term: FLUX pinning; Subject Term: SUPERCONDUCTORS -- Magnetic properties; Subject Term: SEMICONDUCTOR doping; Subject Term: ELECTRIC currents; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; Number of Pages: 6p; Document Type: Article L3 - 10.1103/PhysRevB.83.224520 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67006219&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hammerstroem, Douglas W. AU - Burgers, Mark A. AU - Chung, Stephen W. AU - Guliants, Elena A. AU - Bunker, Christopher E. AU - Wentz, Katherine M. AU - Hayes, Sophia E. AU - Buckner, Steven W. AU - Jelliss, Paul A. T1 - Aluminum Nanoparticles Capped by Polymerization of Alkyl-Substituted Epoxides: Ratio-Dependent Stability and Particle Size. JO - Inorganic Chemistry JF - Inorganic Chemistry Y1 - 2011/06/06/ VL - 50 IS - 11 M3 - Article SP - 5054 EP - 5059 SN - 00201669 AB - We report here on the polymerization of epoxide monomers on incipient aluminum nanoparticle cores and the effects of changing the epoxide-capping precursor and the metallic monomer ratio on the resultant stability and particle size of passivated and capped aluminum nanoparticles. When altering the ratio of aluminum to cap monomer precursor, nanoparticles capped with epoxydodecane, epoxyhexane, and epoxyisobutane show a clear decreasing trend in stability with decreasing alkane substituent length. The nanoparticle core size was unaffected by cap ratio or composition. PXRD (powder X-ray diffraction) and DSC/TGA (differential scanning calorimetry/thermal gravimetric analysis) confirm the presence of successfully passivated face-centered cubic (fcc) aluminum nanoparticles. We also report preliminary results from ATR-FTIR (attenuated total reflectance-Fourier transform infrared), 13C CPMAS (cross-polarization/magic-angle spinning), and 27Al MAS solid-state NMR (nuclear magnetic resonance) measurements. The most stable aluminum nanoparticle-polyether core-shell nanoparticles are found at an Al:monomer mole ratio of 10:1 with an active Al0 content of 94%. [ABSTRACT FROM AUTHOR] AB - Copyright of Inorganic Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM compounds KW - NANOPARTICLES KW - EPOXY compounds KW - MONOMERS KW - THERMOGRAVIMETRY KW - NUCLEAR magnetic resonance KW - CROSSLINKING (Polymerization) N1 - Accession Number: 66956638; Hammerstroem, Douglas W. 1 Burgers, Mark A. 1 Chung, Stephen W. 1 Guliants, Elena A. 2 Bunker, Christopher E. 3 Wentz, Katherine M. 4 Hayes, Sophia E. 4 Buckner, Steven W. 1 Jelliss, Paul A. 1; Affiliation: 1: Department of Chemistry, Saint Louis University, 3501 Laclede Avenue, Saint Louis, Missouri 63103, United States 2: University of Dayton Research Institute, Sensors Technology Office, Dayton, Ohio 45469, United States 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States 4: Department of Chemistry, Washington University, One Brookings Drive, Saint Louis, Missouri 63130, United States; Source Info: 6/6/2011, Vol. 50 Issue 11, p5054; Subject Term: ALUMINUM compounds; Subject Term: NANOPARTICLES; Subject Term: EPOXY compounds; Subject Term: MONOMERS; Subject Term: THERMOGRAVIMETRY; Subject Term: NUCLEAR magnetic resonance; Subject Term: CROSSLINKING (Polymerization); NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1021/ic2003386 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66956638&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zherebtsov, S. AU - Murzinova, M. AU - Salishchev, G. AU - Semiatin, S.L. T1 - Spheroidization of the lamellar microstructure in Ti–6Al–4V alloy during warm deformation and annealing JO - Acta Materialia JF - Acta Materialia Y1 - 2011/06// VL - 59 IS - 10 M3 - Article SP - 4138 EP - 4150 SN - 13596454 AB - Abstract: The spheroidization behavior of an α colony microstructure in Ti–6Al–4V alloy during warm working and subsequent annealing at 600 and 800°C was established. The principal features of microstructure evolution were found to be temperature dependent. At 800°C transformation of the lamellar microstrucuture into a globular one was associated primarily with the classical boundary splitting mechanism followed by further spheroidization of α particles by means of termination migration. For thick α lamellae, however, new grains were formed due to continuous dynamic recrystallization during deformation, but spheroidization per se was limited. A decrease in temperature to 600°C resulted in increased shear strains, lower diffusivity, and a decrease in the volume fraction of the β phase. Consequently, the thin β interlayers transformed relatively quickly into separate particles while α became the matrix phase. Evolution of the α phase during deformation/annealing at 600°C was associated with continuous dynamic recrystallization with only limited dynamic or static spheroidization. Static spheroidization kinetics during annealing following warm working were explained in the context of approximate models of boundary splitting and termination migration. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - TITANIUM alloys KW - DEFORMATIONS (Mechanics) KW - ANNEALING of metals KW - TEMPERATURE effect KW - RECRYSTALLIZATION (Metallurgy) KW - SHEAR (Mechanics) KW - METALS -- Thermomechanical treatment KW - Annealing KW - Microstructure formation KW - Spheroidization KW - Thermomechanical processing KW - Titanium alloy N1 - Accession Number: 60382355; Zherebtsov, S. 1; Email Address: ser_z@mail.ru Murzinova, M. 2 Salishchev, G. 1 Semiatin, S.L. 3; Affiliation: 1: Laboratory of Bulk Nanostructured Materials, Belgorod State University, Pobeda 85, Belgorod 308015, Russia 2: Institute for Metals Superplasticity Problems, Khalturin 39, Ufa 450001, Russia 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLM, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Jun2011, Vol. 59 Issue 10, p4138; Subject Term: MICROSTRUCTURE; Subject Term: TITANIUM alloys; Subject Term: DEFORMATIONS (Mechanics); Subject Term: ANNEALING of metals; Subject Term: TEMPERATURE effect; Subject Term: RECRYSTALLIZATION (Metallurgy); Subject Term: SHEAR (Mechanics); Subject Term: METALS -- Thermomechanical treatment; Author-Supplied Keyword: Annealing; Author-Supplied Keyword: Microstructure formation; Author-Supplied Keyword: Spheroidization; Author-Supplied Keyword: Thermomechanical processing; Author-Supplied Keyword: Titanium alloy; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.actamat.2011.03.037 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60382355&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Streltsov, A. V. AU - Pedersen, T. R. T1 - Excitation of zero-frequency magnetic field-aligned currents by ionospheric heating. JO - Annales Geophysicae (09927689) JF - Annales Geophysicae (09927689) Y1 - 2011/06// VL - 29 IS - 6 M3 - Article SP - 1147 EP - 1152 SN - 09927689 AB - Time-dependent, three-dimensional numerical simulations of the reduced MHD model describing shear Alfven waves in the magnetosphere provide an interesting prediction superficially similar to results of several ionospheric heating experiments conducted at high altitudes. In these experiments, heating of the ionospheric F-region with a constant/zero-frequency beam of HF waves causes luminous structures in the ionosphere in the form of a ring or a solid spot with a characteristic size comparable to the size of the heated spot. Simulations suggest that spots/rings or similar optical appearance might be associated with a magnetic fieldaligned current system produced by the ionospheric heating. Two of the most interesting features of this current system are (1) strong localization across the ambient magnetic field and (2) distinctive non-symmetrical luminous signatures (ring/spot) in magnetically conjugate locations in the ionosphere. [ABSTRACT FROM AUTHOR] AB - Copyright of Annales Geophysicae (09927689) is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETOHYDRODYNAMICS KW - MAGNETOSPHERE KW - MAGNETIC fields KW - IONOSPHERE KW - GEOPHYSICS KW - Ionosphere (Active experiments KW - Ionospheremagnetosphere interactions) KW - Magnetospheric physics (MHD waves and instabilities) N1 - Accession Number: 70127295; Streltsov, A. V. 1; Email Address: streltsov@dartmouth.edu Pedersen, T. R. 2; Affiliation: 1: Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA 2: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA; Source Info: Jun2011, Vol. 29 Issue 6, p1147; Subject Term: MAGNETOHYDRODYNAMICS; Subject Term: MAGNETOSPHERE; Subject Term: MAGNETIC fields; Subject Term: IONOSPHERE; Subject Term: GEOPHYSICS; Author-Supplied Keyword: Ionosphere (Active experiments; Author-Supplied Keyword: Ionospheremagnetosphere interactions); Author-Supplied Keyword: Magnetospheric physics (MHD waves and instabilities); Number of Pages: 6p; Illustrations: 1 Black and White Photograph, 2 Diagrams, 1 Graph; Document Type: Article L3 - 10.5194/angeo-29-1147-2011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70127295&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lu, Yalin T1 - Tunable transmission and enhanced emission in ordered metallic nanostructures having varying channel shape. JO - Applied Physics A: Materials Science & Processing JF - Applied Physics A: Materials Science & Processing Y1 - 2011/06// VL - 103 IS - 3 M3 - Article SP - 597 EP - 605 PB - Springer Science & Business Media B.V. SN - 09478396 AB - Extraordinary transmission spectra for one-dimensional (1D) gratings and two-dimensional (2D) metallic hole arrays change with the hole channel shape. In this paper, a converging-diverging channel (CDC) design was introduced. The transmission spectra corresponding to CDC-embedded nanostructures of 1D grating, circular and rectangular holes (2D hole arrays) are analyzed using three-dimensional (3D) finite-element method. Tuning of optical transmission by changing the CDC structure has been investigated. In addition, a cavity composed of a CDC metallic grating and a 1D photonic crystal (PhC) can lead to an enhanced emission. Large coherence length of the emission can be achieved by exploiting coherent properties of surface waves in grating and PhC. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics A: Materials Science & Processing is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIELD emission KW - NANOSTRUCTURES KW - DIFFRACTION gratings KW - HOLES (Electron deficiencies) KW - COHERENCE (Nuclear physics) KW - SURFACE waves (Fluids) KW - FINITE element method KW - DATA transmission systems N1 - Accession Number: 60904206; Lu, Yalin 1; Email Address: yalin.lu@usafa.edu; Affiliation: 1: Laser Optics Research Center, the Physics Department, US Air Force Academy, Colorado Springs 80840 USA; Source Info: Jun2011, Vol. 103 Issue 3, p597; Subject Term: FIELD emission; Subject Term: NANOSTRUCTURES; Subject Term: DIFFRACTION gratings; Subject Term: HOLES (Electron deficiencies); Subject Term: COHERENCE (Nuclear physics); Subject Term: SURFACE waves (Fluids); Subject Term: FINITE element method; Subject Term: DATA transmission systems; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; Number of Pages: 9p; Illustrations: 1 Diagram, 10 Graphs; Document Type: Article L3 - 10.1007/s00339-010-6191-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60904206&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rutkowski, Adam AU - Miller, Mikel AU - Quinn, Roger AU - Willis, Mark T1 - Egomotion estimation with optic flow and air velocity sensors. JO - Biological Cybernetics JF - Biological Cybernetics Y1 - 2011/06// VL - 104 IS - 6 M3 - Article SP - 351 EP - 367 PB - Springer Science & Business Media B.V. SN - 03401200 AB - We develop a method that allows a flyer to estimate its own motion (egomotion), the wind velocity, ground slope, and flight height using only inputs from onboard optic flow and air velocity sensors. Our artificial algorithm demonstrates how it could be possible for flying insects to determine their absolute egomotion using their available sensors, namely their eyes and wind sensitive hairs and antennae. Although many behaviors can be performed by only knowing the direction of travel, behavioral experiments indicate that odor tracking insects are able to estimate the wind direction and control their absolute egomotion (i.e., groundspeed). The egomotion estimation method that we have developed, which we call the opto-aeronautic algorithm, is tested in a variety of wind and ground slope conditions using a video recorded flight of a moth tracking a pheromone plume. Over all test cases that we examined, the algorithm achieved a mean absolute error in height of 7% or less. Furthermore, our algorithm is suitable for the navigation of aerial vehicles in environments where signals from the Global Positioning System are unavailable. [ABSTRACT FROM AUTHOR] AB - Copyright of Biological Cybernetics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DETECTORS KW - MOTION KW - OPTICS KW - WIND speed KW - COMPUTER algorithms KW - GLOBAL Positioning System KW - SPACE vehicles KW - Egomotion estimation KW - Optic flow KW - Wind estimation N1 - Accession Number: 62544427; Rutkowski, Adam 1; Email Address: adam.rutkowski@eglin.af.mil Miller, Mikel 1 Quinn, Roger 2 Willis, Mark 3; Affiliation: 1: Air Force Research Laboratory/RW, Eglin AFB 32542 USA 2: Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland 44106 USA 3: Department of Biology, Case Western Reserve University, Cleveland 44106 USA; Source Info: Jun2011, Vol. 104 Issue 6, p351; Subject Term: DETECTORS; Subject Term: MOTION; Subject Term: OPTICS; Subject Term: WIND speed; Subject Term: COMPUTER algorithms; Subject Term: GLOBAL Positioning System; Subject Term: SPACE vehicles; Author-Supplied Keyword: Egomotion estimation; Author-Supplied Keyword: Optic flow; Author-Supplied Keyword: Wind estimation; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 17p; Document Type: Article L3 - 10.1007/s00422-011-0440-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62544427&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gunzelmann, Glenn AU - Richard Moore, L. AU - Salvucci, Dario D. AU - Gluck, Kevin A. T1 - Sleep loss and driver performance: Quantitative predictions with zero free parameters JO - Cognitive Systems Research JF - Cognitive Systems Research Y1 - 2011/06// VL - 12 IS - 2 M3 - Article SP - 154 EP - 163 SN - 13890417 AB - Abstract: Fatigue has been implicated in an alarming number of motor vehicle accidents, costing billions of dollars and thousands of lives. Unfortunately, the ability to predict performance impairments in complex task domains like driving is limited by a gap in our understanding of the explanatory mechanisms. In this paper, we describe an attempt to generate a priori predictions of degradations in driver performance due to sleep deprivation. We accomplish this by integrating an existing account of the effects of sleep loss and circadian rhythms on sustained attention performance with a validated model of driver behavior. The predicted results account for published qualitative trends for driving across multiple days of restricted sleep and total sleep deprivation. The quantitative results show that the model’s performance is worse at baseline and degrades less severely than human driving, and expose some critical areas for future research. Overall, the results illustrate the potential value of model reuse and integration for improving our understanding of important psychological phenomena and for making useful predictions of performance in applied, naturalistic task contexts. [Copyright &y& Elsevier] AB - Copyright of Cognitive Systems Research is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SLEEP deprivation KW - FATIGUE KW - ATTENTION KW - PREDICTION (Psychology) KW - CIRCADIAN rhythms KW - TRAFFIC accidents KW - AUTOMOBILE driving KW - Computational model KW - Driver behavior KW - Fatigue KW - Sleep deprivation KW - Sustained attention N1 - Accession Number: 59188018; Gunzelmann, Glenn 1; Email Address: glenn.gunzelmann@us.af.mil Richard Moore, L. 2 Salvucci, Dario D. 3 Gluck, Kevin A. 1; Affiliation: 1: Air Force Research Laboratory, United States 2: Lockheed Martin at Air Force Research Laboratory, 6030 South Kent St., Mesa, AZ 85212, United States 3: Department of Computer Science, Drexel University, 3141 Chestnut St., Philadelphia, PA 19104, United States; Source Info: Jun2011, Vol. 12 Issue 2, p154; Subject Term: SLEEP deprivation; Subject Term: FATIGUE; Subject Term: ATTENTION; Subject Term: PREDICTION (Psychology); Subject Term: CIRCADIAN rhythms; Subject Term: TRAFFIC accidents; Subject Term: AUTOMOBILE driving; Author-Supplied Keyword: Computational model; Author-Supplied Keyword: Driver behavior; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Sleep deprivation; Author-Supplied Keyword: Sustained attention; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.cogsys.2010.07.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59188018&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Katta, V.R. AU - Stouffer, Scott AU - Roquemore, W.M. T1 - Stability of lifted flames in centerbody burner JO - Combustion & Flame JF - Combustion & Flame Y1 - 2011/06// VL - 158 IS - 6 M3 - Article SP - 1149 EP - 1159 SN - 00102180 AB - Abstract: The centerbody burner was designed with the objective of understanding the coupled processes of formation, growth, and burn-off of soot through decoupling them using recirculation zones (RZs). Experimentally it was found that the sooting characteristics of the centerbody burner could be altered dramatically via simple changes in the operating conditions. One of the interesting operating regimes in which a flame lifts off and forms a column of soot was identified when oxygen in the annulus air jet was reduced sufficiently. This paper describes the numerical studies performed to aid the understanding of lifted flames in the centerbody burner. A time-dependent, axisymmetric, detailed-chemistry CFD model is used. Combustion and PAH formation are modeled using the Wang–Frenklach (99 species and 1066 reactions) mechanism, and soot is simulated using a two-equation model of Lindstedt. Calculations have predicted the structure of the lifted flame very well. Two RZs [outer (ORZ) and inner (IRZ)] are formed between the fuel and air jets. A diffusion flame that is lifted-off the centerbody plate anchors steadily to the outer periphery of the ORZ. A near-perfect match between the computed and measured flame lift-off heights is achieved. RZs transport soot that is formed in the flame toward the face of the centerbody and create the soot column. Ethylene and its lighter fuel fragments that are formed in the RZs diffuse toward the annulus air jet and establish a mixing layer with the inwardly diffusing oxygen. Heat diffusing away from the RZs initiates autoignition reactions in the mixing layer. A flame with a triple-flame-base structure becomes established at a location where the ignition-delay time matches the residence time. Soot that is transported into the RZs is found to have a significant effect on the flame lift-off height. Numerical experiments are performed to aid the understanding of the relationship between soot and flame lift-off. Radiation from the soot decreases the temperature, slows the autoignition process, and increases the lift-off height. Soot oxidation consumes O and OH radicals, slows the autoignition reactions, and increases the lift-off height. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLAME stability KW - DECOUPLING (Mathematics) KW - RADIATION KW - AXIAL flow KW - AUTOMOBILE ignition KW - FUEL KW - FLAME KW - SOOT KW - DIFFUSION KW - Autoignition KW - Diffusion flames KW - Flame stability KW - Modeling KW - Triple flames N1 - Accession Number: 59927656; Katta, V.R. 1; Email Address: vrkatta@gmail.com Stouffer, Scott 2 Roquemore, W.M. 3; Affiliation: 1: Innovative Scientific Solutions Inc., 2766 Indian Ripple Road, Dayton, OH 45440, United States 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, United States 3: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, United States; Source Info: Jun2011, Vol. 158 Issue 6, p1149; Subject Term: FLAME stability; Subject Term: DECOUPLING (Mathematics); Subject Term: RADIATION; Subject Term: AXIAL flow; Subject Term: AUTOMOBILE ignition; Subject Term: FUEL; Subject Term: FLAME; Subject Term: SOOT; Subject Term: DIFFUSION; Author-Supplied Keyword: Autoignition; Author-Supplied Keyword: Diffusion flames; Author-Supplied Keyword: Flame stability; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Triple flames; NAICS/Industry Codes: 454319 Other fuel dealers; NAICS/Industry Codes: 454310 Fuel Dealers; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.combustflame.2010.10.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59927656&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Seversky, Lee M. AU - Berger, Matt S. AU - Yin, Lijun T1 - Harmonic point cloud orientation JO - Computers & Graphics JF - Computers & Graphics Y1 - 2011/06// VL - 35 IS - 3 M3 - Article SP - 492 EP - 499 SN - 00978493 AB - Abstract: In this work we propose a new method for estimating the normal orientation of unorganized point clouds. Consistent assignment of normal orientation is a challenging task in the presence of sharp features, nearby surface sheets, noise, undersampling, and missing data. Existing approaches, which consider local geometric properties often fail when operating on such point clouds as local neighborhood measures inherently face issues of robustness. Our approach circumvents these issues by orienting normals based on globally smooth functions defined on point clouds with measures that depend only on single points. More specifically, we consider harmonic functions, or functions which lie in the kernel of the point cloud Laplace–Beltrami operator. Each harmonic function in the set is used to define a gradient field over the point cloud. The problem of normal orientation is then cast as an assignment of cross-product ordering between gradient fields. Global smoothness ensures a highly consistent orientation, rendering our method extremely robust in the presence of imperfect point clouds. [Copyright &y& Elsevier] AB - Copyright of Computers & Graphics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HARMONIC functions (Mathematics) KW - OPERATOR theory KW - MISSING data (Statistics) KW - ROBUST control KW - SMOOTHNESS of functions KW - KERNEL functions KW - Gradient fields KW - Harmonic functions KW - Laplace–Beltrami operator KW - Normal orientation KW - Point clouds KW - Surface reconstruction N1 - Accession Number: 60924125; Seversky, Lee M. 1,2; Email Address: lsevers0@binghamton.edu Berger, Matt S. 1,3 Yin, Lijun 2; Affiliation: 1: Air Force Research Laboratory, Information Directorate, USA 2: State University of New York at Binghamton, USA 3: Scientific Computing and Imaging Institute, University of Utah, USA; Source Info: Jun2011, Vol. 35 Issue 3, p492; Subject Term: HARMONIC functions (Mathematics); Subject Term: OPERATOR theory; Subject Term: MISSING data (Statistics); Subject Term: ROBUST control; Subject Term: SMOOTHNESS of functions; Subject Term: KERNEL functions; Author-Supplied Keyword: Gradient fields; Author-Supplied Keyword: Harmonic functions; Author-Supplied Keyword: Laplace–Beltrami operator; Author-Supplied Keyword: Normal orientation; Author-Supplied Keyword: Point clouds; Author-Supplied Keyword: Surface reconstruction; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.cag.2011.03.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60924125&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Greer, J.M. AU - Galyon Dorman, S.E. AU - Hammond, M.J. T1 - Some comments on the Arcan mixed-mode (I/II) test specimen JO - Engineering Fracture Mechanics JF - Engineering Fracture Mechanics Y1 - 2011/06// VL - 78 IS - 9 M3 - Article SP - 2088 EP - 2094 SN - 00137944 AB - Abstract: Although the Arcan specimen has been used frequently for mixed-mode crack growth testing using single-axis servohydraulic test equipment, the specimen and its commonly-used fixturing have features and behaviors that have implications to the proper understanding of results garnered from their use. These implications extend to hardware issues as well, as the Arcan specimen (when mounted at off-axis angles) can generate significant and even potentially damaging side loads on the load frame actuator. This paper discusses a number of the issues associated with the Arcan specimen and Arcan testing. [Copyright &y& Elsevier] AB - Copyright of Engineering Fracture Mechanics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDRAULICS KW - TESTING -- Equipment & supplies KW - JIGS & fixtures KW - ACTUATORS KW - HARDWARE KW - FRACTURE mechanics KW - Arcan specimen KW - Crack growth testing KW - Fatigue crack growth KW - Mixed-mode crack growth N1 - Accession Number: 60521627; Greer, J.M.; Email Address: jim.greer.ctr@usafa.edu Galyon Dorman, S.E. 1; Email Address: sarah.galyon.ctr@usafa.edu Hammond, M.J. 1; Email Address: matthew.hammond.ctr@usafa.edu; Affiliation: 1: Valdez International Corporation at the US Air Force Academy, HQ USAFA/DFEM, 2354 Fairchild Dr. Ste. 2J2, USAF Academy, CO 80840-3240, United States; Source Info: Jun2011, Vol. 78 Issue 9, p2088; Subject Term: HYDRAULICS; Subject Term: TESTING -- Equipment & supplies; Subject Term: JIGS & fixtures; Subject Term: ACTUATORS; Subject Term: HARDWARE; Subject Term: FRACTURE mechanics; Author-Supplied Keyword: Arcan specimen; Author-Supplied Keyword: Crack growth testing; Author-Supplied Keyword: Fatigue crack growth; Author-Supplied Keyword: Mixed-mode crack growth; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; NAICS/Industry Codes: 238390 Other Building Finishing Contractors; NAICS/Industry Codes: 452991 Home and auto supplies stores; NAICS/Industry Codes: 332510 Hardware Manufacturing; NAICS/Industry Codes: 416330 Hardware merchant wholesalers; NAICS/Industry Codes: 333514 Special Die and Tool, Die Set, Jig, and Fixture Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.engfracmech.2011.03.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60521627&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ozaltun, H. AU - Shen, M.-H. AU - George, T. AU - Cross, C. T1 - An Energy Based Fatigue Life Prediction Framework for In-Service Structural Components. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2011/06// VL - 51 IS - 5 M3 - Article SP - 707 EP - 718 SN - 00144851 AB - n energy based fatigue life prediction framework has been developed for calculation of remaining fatigue life of in service gas turbine materials. The purpose of the life prediction framework is to account aging effect caused by cyclic loadings on fatigue strength of gas turbine engines structural components which are usually designed for very long life. Previous studies indicate the total strain energy dissipated during a monotonic fracture process and a cyclic process is a material property that can be determined by measuring the area underneath the monotonic true stress-strain curve and the sum of the area within each hysteresis loop in the cyclic process, respectively. The energy-based fatigue life prediction framework consists of the following entities: (1) development of a testing procedure to achieve plastic energy dissipation per life cycle and (2) incorporation of an energy-based fatigue life calculation scheme to determine the remaining fatigue life of in-service gas turbine materials. The accuracy of the remaining fatigue life prediction method was verified by comparison between model approximation and experimental results of Aluminum 6061-T6. The comparison shows promising agreement, thus validating the capability of the framework to produce accurate fatigue life prediction. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS turbines KW - CYCLIC loads KW - MATERIALS -- Fatigue KW - STRESS-strain curves KW - HYSTERESIS loop KW - ALUMINUM KW - Aging effect KW - Energy based fatigue KW - Hysteresis energy N1 - Accession Number: 60411011; Ozaltun, H. Shen, M.-H. 1; Email Address: shen.1@osu.edu George, T. 2 Cross, C. 2; Affiliation: 1: Department of Mechanical Engineering, Ohio State University, N350 Scott Lab, 201 W. 19th Avenue Columbus 43210 USA 2: Air Force Research Laboratory, 1950 Fifth Street Wright-Patterson AFB 45433 USA; Source Info: Jun2011, Vol. 51 Issue 5, p707; Subject Term: GAS turbines; Subject Term: CYCLIC loads; Subject Term: MATERIALS -- Fatigue; Subject Term: STRESS-strain curves; Subject Term: HYSTERESIS loop; Subject Term: ALUMINUM; Author-Supplied Keyword: Aging effect; Author-Supplied Keyword: Energy based fatigue; Author-Supplied Keyword: Hysteresis energy; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 12p; Illustrations: 1 Chart, 1 Graph; Document Type: Article L3 - 10.1007/s11340-010-9365-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60411011&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuo Fang AU - Disotell, Kevin J. AU - Long, Samuel R. AU - Gregory, James W. AU - Semmelmayer, Frank C. AU - Guyton, Robert W. T1 - Application of fast-responding pressure-sensitive paint to a hemispherical dome in unsteady transonic flow. JO - Experiments in Fluids JF - Experiments in Fluids Y1 - 2011/06// VL - 50 IS - 6 M3 - Article SP - 1495 EP - 1505 SN - 07234864 AB - The current work focuses on the development and application of fast-responding polymer/ceramic pressure-sensitive paint (PSP) as an advanced surface pressure measurement technique for unsteady flow fields in large-scale wind tunnels. To demonstrate the unsteady PSP technique, the unsteady surface pressure distribution over a hemispherical dome placed in the United States Air Force Research Laboratory's Trisonic Gasdynamics Facility (TGF) was studied by phase-locking to the characteristic frequency in the flow caused by an unsteady separated shear layer shed from the dome. The wind tunnel was operated at stagnation pressures of 23.92 and 71.84 kPa, with the test section flow at Mach 0.6. Under the two operating conditions, the predominant shear layer frequency was measured to be 272 and 400 Hz, respectively. The quasi-periodic shear layer frequency enabled a phase-averaged method to be employed for capturing the unsteady shock motion on the hemisphere. Unsteady pressure data resulting from this technique are shown to correlate well with measurements acquired by conventional measurement techniques. Measurement uncertainty in the phase-averaging technique will be discussed. To address measurement uncertainties from temperature sensitivity and model movement, a new implementation of an AC-coupled data representation is offered. [ABSTRACT FROM AUTHOR] AB - Copyright of Experiments in Fluids is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UNSTEADY flow (Fluid dynamics) KW - FLUID dynamics KW - TRANSONIC aerodynamics KW - AERODYNAMICS KW - POLYMERS N1 - Accession Number: 60841045; Shuo Fang 1 Disotell, Kevin J. 1 Long, Samuel R. 1 Gregory, James W. 1; Email Address: gregory.234@osu.edu Semmelmayer, Frank C. 2 Guyton, Robert W. 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, The Ohio State University, 2300 West Case Road, Columbus, OH 43235, USA 2: U.S. Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH 45433, USA; Source Info: Jun2011, Vol. 50 Issue 6, p1495; Subject Term: UNSTEADY flow (Fluid dynamics); Subject Term: FLUID dynamics; Subject Term: TRANSONIC aerodynamics; Subject Term: AERODYNAMICS; Subject Term: POLYMERS; Number of Pages: 11p; Illustrations: 1 Black and White Photograph, 6 Diagrams, 8 Graphs; Document Type: Article L3 - 10.1007/s00348-010-1010-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60841045&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McClernon, Christopher K. AU - McCauley, Michael E. AU - O’Connor, Paul E. AU - Warm, Joel S. T1 - Stress Training Improves Performance During a Stressful Flight. JO - Human Factors JF - Human Factors Y1 - 2011/06// VL - 53 IS - 3 M3 - Article SP - 207 EP - 218 SN - 00187208 AB - Objective: This study investigated whether stress training introduced during the acquisition of simulator-based flight skills enhances pilot performance during subsequent stressful flight operations in an actual aircraft.Background: Despite knowledge that preconditions to aircraft accidents can be strongly influenced by pilot stress, little is known about the effectiveness of stress training and how it transfers to operational flight settings.Method: For this study, 30 participants with no flying experience were assigned at random to a stress-trained treatment group or a control group. Stress training consisted of systematic pairing of skill acquisition in a flight simulator with stress coping mechanisms in the presence of a cold pressor. Control participants received identical flight skill acquisition training but without stress training. Participants then performed a stressful flying task in a Piper Archer aircraft.Results: Stress-trained research participants flew the aircraft more smoothly, as recorded by aircraft telemetry data, and generally better, as recorded by flight instructor evaluations, than did control participants.Conclusions: Introducing stress coping mechanisms during flight training improved performance in a stressful flying task.Application: The results of this study indicate that stress training during the acquisition of flight skills may serve to enhance pilot performance in stressful operational flight and, therefore, might mitigate the contribution of pilot stress to aircraft mishaps. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLIGHT training KW - STRESS management KW - AIRPLANES -- Piloting KW - FLIGHT simulators KW - AIRCRAFT accidents KW - TRAINING planes KW - AEROSPACE telemetry KW - PERFORMANCE evaluation KW - aviation safety KW - cold pressor KW - flight training KW - performance under stress KW - pilot performance KW - pilot training KW - stress coping KW - stress exposure training N1 - Accession Number: 62030656; McClernon, Christopher K. 1 McCauley, Michael E. 2 O’Connor, Paul E. 3 Warm, Joel S. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 2: Naval Postgraduate School, Monterey, California 3: National University of Ireland, Galway, Ireland; Source Info: Jun2011, Vol. 53 Issue 3, p207; Subject Term: FLIGHT training; Subject Term: STRESS management; Subject Term: AIRPLANES -- Piloting; Subject Term: FLIGHT simulators; Subject Term: AIRCRAFT accidents; Subject Term: TRAINING planes; Subject Term: AEROSPACE telemetry; Subject Term: PERFORMANCE evaluation; Author-Supplied Keyword: aviation safety; Author-Supplied Keyword: cold pressor; Author-Supplied Keyword: flight training; Author-Supplied Keyword: performance under stress; Author-Supplied Keyword: pilot performance; Author-Supplied Keyword: pilot training; Author-Supplied Keyword: stress coping; Author-Supplied Keyword: stress exposure training; NAICS/Industry Codes: 517919 All Other Telecommunications; NAICS/Industry Codes: 611512 Flight Training; Number of Pages: 12p; Document Type: Article L3 - 10.1177/0018720811405317 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62030656&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lyons, Joseph B. AU - Stokes, Charlene K. AU - Eschleman, Kevin J. AU - Alarcon, Gene M. AU - Barelka, Alex J. T1 - Trustworthiness and IT Suspicion: An Evaluation of the Nomological Network. JO - Human Factors JF - Human Factors Y1 - 2011/06// VL - 53 IS - 3 M3 - Article SP - 219 EP - 229 SN - 00187208 AB - Objective: The authors evaluated the validity of trust in automation and information technology (IT) suspicion by examining their factor structure and relationship with decision confidence.Background: Research on trust has burgeoned, yet the dimensionality of trust remains elusive. Researchers suggest that trust is a unidimensional construct, whereas others believe it is multidimensional. Additionally, novel constructs, such as IT suspicion, have yet to be distinguished from trust in automation. Research is needed to examine the overlap between these constructs and to determine the dimensionality of trust in automation.Method: Participants (N = 72) engaged in a computer-based convoy scenario involving an automated decision aid. The aid fused real-time sensor data and provided route recommendations to participants who selected a route based on (a) a map with historical enemy information, (b) sensor inputs, and (c) automation suggestions. Measures for trust in automation and IT suspicion were administered after individuals interacted with the automation.Results: Results indicated three orthogonal factors: trust, distrust, and IT suspicion. Each variable was explored as a predictor of decision confidence. Distrust and trust evidenced unique influences on decision confidence, albeit at different times. Higher distrust related to less confidence, whereas trust related to greater confidence.Conclusion: The current study found that trust in automation was best characterized by two orthogonal dimensions (trust and distrust). Both trust and distrust were found to be independent from IT suspicion, and both distrust and trust uniquely predicted decision confidence.Application: Researchers may consider using separate measures for trust and distrust in future studies. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFORMATION technology KW - AUTOMATION KW - FACTOR structure KW - DECISION making KW - INFORMATION storage & retrieval systems KW - MECHANIZATION KW - RELIABILITY (Engineering) KW - decision confidence KW - suspicion KW - trust in automation KW - trustworthiness N1 - Accession Number: 62030658; Lyons, Joseph B. 1 Stokes, Charlene K. 2 Eschleman, Kevin J. 2 Alarcon, Gene M. 2 Barelka, Alex J. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio Joseph.lyons@wpafb.af.mil 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio; Source Info: Jun2011, Vol. 53 Issue 3, p219; Subject Term: INFORMATION technology; Subject Term: AUTOMATION; Subject Term: FACTOR structure; Subject Term: DECISION making; Subject Term: INFORMATION storage & retrieval systems; Subject Term: MECHANIZATION; Subject Term: RELIABILITY (Engineering); Author-Supplied Keyword: decision confidence; Author-Supplied Keyword: suspicion; Author-Supplied Keyword: trust in automation; Author-Supplied Keyword: trustworthiness; Number of Pages: 11p; Document Type: Article L3 - 10.1177/0018720811406726 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62030658&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bochove, Erik J. AU - Aceves, Alejandro B. AU - Braiman, Yehuda AU - Colet, Pere AU - Deiterding, Ralf AU - Jacobo, Adrián AU - Miller, Casey A. AU - Rhodes, Charley AU - Shakir, Sami A. T1 - Model of the Self-Q-Switching Instability of Passively Phased Fiber Laser Arrays. JO - IEEE Journal of Quantum Electronics JF - IEEE Journal of Quantum Electronics Y1 - 2011/06// VL - 47 IS - 6 M3 - Article SP - 777 EP - 785 SN - 00189197 AB - We present a simple model for self-pulsation instability in passively phased high power optical fiber amplifier arrays with external feedback. Its key features are, first, the feedback level's sensitivity, and thus that of the cavity Q-value, to small phase changes of the array fields, and, second, the effect of refractive index nonlinearity in the amplifiers. The model's prediction of an instability threshold for arrays of at least two amplifiers is confirmed by a linearized stability analysis of a system in ring-cavity geometry, and the magnitudes of predicted power levels are well within the domain of recent experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Journal of Quantum Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIBER lasers KW - BEAMFORMING KW - INDUSTRIAL applications KW - MILITARY applications of lasers KW - OPTOELECTRONICS KW - FEEDBACK (Electronics) KW - Cavity resonators KW - Eigenvalues and eigenfunctions KW - Fiber lasers KW - Indexes KW - Laser modes KW - Optical arrays KW - Optical resonators KW - passively phased fiber amplifier arrays KW - Phased arrays KW - spatial filtering N1 - Accession Number: 62560048; Bochove, Erik J. 1 Aceves, Alejandro B. 2 Braiman, Yehuda 3 Colet, Pere 4 Deiterding, Ralf 3 Jacobo, Adrián 4 Miller, Casey A. 5 Rhodes, Charley 6 Shakir, Sami A. 7; Affiliation: 1: Directed Energy Directorate, Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, NM, USA 2: Department of Mathematics, Southern Methodist University, Dallas, TX, USA 3: Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA 4: Instituto de Física Interdisciplinar y Sistemas Complejos, Campus Universitat de les Illes Balears, Palma de Mallorca, Spain 5: Computer Science and Mathematics Division, Oak Ridge, National Laboratory, Oak Ridge, TN, USA 6: Libration Systems Management, Inc., Albuquerque, NM, USA 7: TASC, Inc., Albuquerque, NM, USA; Source Info: Jun2011, Vol. 47 Issue 6, p777; Subject Term: FIBER lasers; Subject Term: BEAMFORMING; Subject Term: INDUSTRIAL applications; Subject Term: MILITARY applications of lasers; Subject Term: OPTOELECTRONICS; Subject Term: FEEDBACK (Electronics); Author-Supplied Keyword: Cavity resonators; Author-Supplied Keyword: Eigenvalues and eigenfunctions; Author-Supplied Keyword: Fiber lasers; Author-Supplied Keyword: Indexes; Author-Supplied Keyword: Laser modes; Author-Supplied Keyword: Optical arrays; Author-Supplied Keyword: Optical resonators; Author-Supplied Keyword: passively phased fiber amplifier arrays; Author-Supplied Keyword: Phased arrays; Author-Supplied Keyword: spatial filtering; Number of Pages: 9p; Document Type: Article L3 - 10.1109/JQE.2011.2112637 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62560048&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pochet, Michael C. AU - Naderi, Nader A. AU - Kovanis, Vassilios AU - Lester, Luke F. T1 - Modeling the Dynamic Response of an Optically-Injected Nanostructure Diode Laser. JO - IEEE Journal of Quantum Electronics JF - IEEE Journal of Quantum Electronics Y1 - 2011/06// VL - 47 IS - 6 M3 - Article SP - 827 EP - 833 SN - 00189197 AB - We reformulate a dimensionless approach to evaluate the operational dynamics of an optically injected nanostructure laser as a function of the injection strength and the detuning frequency to account for the large nonlinear gain component associated with nanostructure lasers through the nonlinear carrier relaxation rate and gain compression coefficient. The large nonlinear carrier relaxation rate and gain compression coefficient are shown to impact the level of stability numerically predicted in the optically injected laser at low injected power levels. The numerical model is verified experimentally by optically injecting a quantum-dash Fabry-Perot laser with an operating wavelength of approximately 1550 nm. The quantum-dash laser's large damping rate, gain compression coefficient, and sufficiently small linewidth enhancement factor are observed to inhibit period-doubling and chaotic operation under zero frequency-detuning conditions. The inclusion of the nonlinear carrier relaxation rate in the simulation is shown to greatly enhance the agreement between the numerical predictions and the experimentally observed dynamics. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Journal of Quantum Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURES KW - RESEARCH KW - DIODES KW - LASERS -- Research KW - DIMENSIONLESS numbers KW - MODELS & modelmaking KW - Nonlinear dynamics KW - nonlinear gain KW - optical injection KW - quantum-dash laser KW - semiconductor laser N1 - Accession Number: 62560052; Pochet, Michael C. 1 Naderi, Nader A. 2 Kovanis, Vassilios 3 Lester, Luke F. 2; Affiliation: 1: Air Force Institute of Technology, Wright-Patterson Air Force Base, OH, USA 2: Center for High Technology Materials, University of New Mexico, Albuquerque, NM, USA 3: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Source Info: Jun2011, Vol. 47 Issue 6, p827; Subject Term: NANOSTRUCTURES; Subject Term: RESEARCH; Subject Term: DIODES; Subject Term: LASERS -- Research; Subject Term: DIMENSIONLESS numbers; Subject Term: MODELS & modelmaking; Author-Supplied Keyword: Nonlinear dynamics; Author-Supplied Keyword: nonlinear gain; Author-Supplied Keyword: optical injection; Author-Supplied Keyword: quantum-dash laser; Author-Supplied Keyword: semiconductor laser; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 7p; Document Type: Article L3 - 10.1109/JQE.2011.2124445 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62560052&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vargas, Jorge M. AU - Bogozi, Albert AU - Noel, Julien AU - Hijazi, Yazan AU - Vlasov, Yuriy A. AU - Larkins, Grover L. T1 - Reliability of Suspended Bridges on Superconducting Microstrip Filters Using MEMS Switches. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2011/06// VL - 21 IS - 3 M3 - Article SP - 567 EP - 570 SN - 10518223 AB - This work proposes to use capacitive micro-electro-mechanical systems (MEMS) switches built on a superconducting microstrip hairpin filter to investigate the reliability of MEMS for long term survivability. This device is made of a \YBa2\Cu3\O7 thin film deposited on a 20 mm \times 20 mm \LaAlO3 substrate by pulsed laser deposition and \BaTiO3 by RF magnetron sputtering, which is utilized as a dielectric insulation layer at the switching points of contact. The major concern for capacitive MEMS switches is stiction between the gold suspended bridge membrane (top layer) and the dielectric material (bottom layer). The main failure mode results from charge build-up at the bottom layer which in turn depends on the actuation voltage. The actuation voltage measured at room and cryogenic temperature is used to derive and calculate the Young's modulus formula which takes into consideration the device geometry, residual stress and mechanical properties of the device. Modified Young's modulus equation will be validated through reliability data of membrane actuation and failure mode. This equation will in turn be used in modeling other RF MEMS devices operating at cryogenic temperatures. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RELIABILITY (Engineering) KW - SUPERCONDUCTING magnets KW - STRIP transmission lines KW - MICROWAVE filters KW - MICROELECTROMECHANICAL systems KW - CRYOELECTRONICS KW - COPPER oxide KW - MAGNETRON sputtering KW - Actuation voltage KW - Biomembranes KW - Bridge circuits KW - Cryogenics KW - Fabrication KW - Gold KW - MEMS switch KW - microstrip hairpin filter KW - Microswitches KW - stiction KW - Superconducting microwave devices KW - superconductor KW - Young's elastic modulus N1 - Accession Number: 60967867; Vargas, Jorge M. 1 Bogozi, Albert 2 Noel, Julien 3 Hijazi, Yazan 1 Vlasov, Yuriy A. 4 Larkins, Grover L. 4; Affiliation: 1: Universidad del Turabo, Gurabo, PR, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA 3: Universidad Nacional de Ingeniería (UNI), Lima, Perú 4: Florida International University, Miami, FL, USA; Source Info: Jun2011, Vol. 21 Issue 3, p567; Subject Term: RELIABILITY (Engineering); Subject Term: SUPERCONDUCTING magnets; Subject Term: STRIP transmission lines; Subject Term: MICROWAVE filters; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: CRYOELECTRONICS; Subject Term: COPPER oxide; Subject Term: MAGNETRON sputtering; Author-Supplied Keyword: Actuation voltage; Author-Supplied Keyword: Biomembranes; Author-Supplied Keyword: Bridge circuits; Author-Supplied Keyword: Cryogenics; Author-Supplied Keyword: Fabrication; Author-Supplied Keyword: Gold; Author-Supplied Keyword: MEMS switch; Author-Supplied Keyword: microstrip hairpin filter; Author-Supplied Keyword: Microswitches; Author-Supplied Keyword: stiction; Author-Supplied Keyword: Superconducting microwave devices; Author-Supplied Keyword: superconductor; Author-Supplied Keyword: Young's elastic modulus; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TASC.2010.2092736 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60967867&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wittich, D. J. AU - Cain, Alan B. AU - Jumper, Eric J. T1 - Strong flow-acoustic resonances of rectangular cavities. JO - International Journal of Aeroacoustics JF - International Journal of Aeroacoustics Y1 - 2011/06// VL - 10 IS - 2/3 M3 - Article SP - 277 EP - 294 SN - 1475472X AB - Several studies relating to strongly resonating cavity shear layers in subsonic or supersonic flows are reviewed and discussed. Special consideration is given to cavity configurations which Rockwell and Naudascher (1978) branded "whistle-type" cavities, deep cavities and cavities mounted in the wall of an otherwise solid-walled duct (such as a wind tunnel). At certain flow conditions, each configuration can promote a strong, acoustic resonance which tends to favor a single dominant frequency in the pressure spectrum. The resultant shear layer motions and unsteady pressure fluctuations may be of large amplitude at the peak frequency. The empirical constants in Rossiter's formula and a similar frequency prediction formula for partially-covered cavities are also discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aeroacoustics is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIND tunnels KW - HOLES KW - SOUND pressure KW - AIRFRAMES KW - OSCILLATIONS KW - ACOUSTIC radiation pressure N1 - Accession Number: 59985897; Wittich, D. J. 1; Email Address: donald.wittich@kirtland.af.mil Cain, Alan B. 2 Jumper, Eric J. 3; Affiliation: 1: Air Force Research Laboratory, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117-5776 2: Innovative Technology Applications Company, P.O. Box 6971, Chesterfield, MO 63006-6971 3: Hessert Laboratory for Aerospace Research, University of Notre Dame, Notre Dame, IN 46556; Source Info: Jun2011, Vol. 10 Issue 2/3, p277; Subject Term: WIND tunnels; Subject Term: HOLES; Subject Term: SOUND pressure; Subject Term: AIRFRAMES; Subject Term: OSCILLATIONS; Subject Term: ACOUSTIC radiation pressure; Number of Pages: 18p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59985897&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wu, W. AU - Bostanci, H. AU - Chow, L.C. AU - Ding, S.J. AU - Hong, Y. AU - Su, M. AU - Kizito, J.P. AU - Gschwender, L. AU - Snyder, C.E. T1 - Jet impingement and spray cooling using slurry of nanoencapsulated phase change materials JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2011/06// VL - 54 IS - 13/14 M3 - Article SP - 2715 EP - 2723 SN - 00179310 AB - Abstract: Polymer encapsulated nano phase change materials (paraffin) in particulate form (nano PCM) are added in water to enhance the heat transfer performance of jet impingement and spray cooling. The nano PCM particles absorb heat when paraffin changes from solid to liquid phase. The encapsulation prevents paraffin leakage and agglomeration. The volume fraction of nanoparticles plays an important role on pressure drop and heat transfer. Slurry with 28% particle volume fraction enhances heat transfer coefficient by 50% and 70% when compared to base solution for jet impingement and spray cooling, respectively. The structural integrity of shell encapsulation has been demonstrated by repeated use in a closed loop. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JETS (Fluid dynamics) KW - HEAT transfer KW - PHASE transformations (Physics) KW - NANOPARTICLES KW - AGGLOMERATION (Materials) KW - SLURRY KW - POLYMERS KW - COOLING KW - MICROENCAPSULATION KW - Jet impingement KW - Polymer encapsulated paraffin nanoparticle KW - Spray cooling N1 - Accession Number: 60161260; Wu, W. 1 Bostanci, H. 1 Chow, L.C. 1; Email Address: lchow@mail.ucf.edu Ding, S.J. 2 Hong, Y. 2 Su, M. 2 Kizito, J.P. 3 Gschwender, L. 4 Snyder, C.E. 4; Affiliation: 1: Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, FL 32816-2450, USA 2: NanoScience Technology Center, University of Central Florida, Orlando, FL 32816, USA 3: Department of Mechanical Engineering, North Carolina Agricultural and Technological State University, Greensboro, NC 27411, USA 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Jun2011, Vol. 54 Issue 13/14, p2715; Subject Term: JETS (Fluid dynamics); Subject Term: HEAT transfer; Subject Term: PHASE transformations (Physics); Subject Term: NANOPARTICLES; Subject Term: AGGLOMERATION (Materials); Subject Term: SLURRY; Subject Term: POLYMERS; Subject Term: COOLING; Subject Term: MICROENCAPSULATION; Author-Supplied Keyword: Jet impingement; Author-Supplied Keyword: Polymer encapsulated paraffin nanoparticle; Author-Supplied Keyword: Spray cooling; NAICS/Industry Codes: 212210 Iron Ore Mining; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2011.03.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60161260&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kleiser, G.J. AU - Chhabildas, L.C. AU - Reinhart, W.D. T1 - Comparison of dynamic compression behavior of single crystal sapphire to polycrystalline alumina JO - International Journal of Impact Engineering JF - International Journal of Impact Engineering Y1 - 2011/06// VL - 38 IS - 6 M3 - Article SP - 473 EP - 479 SN - 0734743X AB - Abstract: Due to the considerable interest in the shock loading behavior of aluminum oxide whether it is in the polycrystalline phase or in the single crystal phase well-controlled experiments were conducted to probe differences in shock loading behavior between these two materials. Previous studies concluded that the behavior was similar but careful examination of well-controlled experiments has revealed the two materials are different.Although the experimental results appear to have the same behavior in the shock velocity vs. particle velocity plane, they are considerably different in the stress–volume compression plane and evidence is provided that indicates the single crystal remains crystalline up to the stresses imposed for this analysis. This is an extremely interesting observation since it has many implications including developing dynamic material models capable of transitioning between individual grains and polycrystalline material. [Copyright &y& Elsevier] AB - Copyright of International Journal of Impact Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Compression testing KW - SAPPHIRES KW - POLYCRYSTALS KW - ALUMINUM oxide KW - MATERIALS -- Dynamic testing KW - CRYSTAL defects KW - COMPARATIVE studies KW - STRAINS & stresses (Mechanics) KW - Alumina KW - Dynamic strength KW - Sapphire KW - Shock loading KW - Single crystals N1 - Accession Number: 60520350; Kleiser, G.J. 1; Email Address: geremy.kleiser@eglin.af.mil Chhabildas, L.C. 1 Reinhart, W.D. 2; Affiliation: 1: Air Force Research Laboratory, 101W Eglin Blvd, Eglin AFB, FL 32578, USA 2: Sandia National Laboratories, PO Box 5800, Albuquerque, NM 87185, USA; Source Info: Jun2011, Vol. 38 Issue 6, p473; Subject Term: MATERIALS -- Compression testing; Subject Term: SAPPHIRES; Subject Term: POLYCRYSTALS; Subject Term: ALUMINUM oxide; Subject Term: MATERIALS -- Dynamic testing; Subject Term: CRYSTAL defects; Subject Term: COMPARATIVE studies; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: Alumina; Author-Supplied Keyword: Dynamic strength; Author-Supplied Keyword: Sapphire; Author-Supplied Keyword: Shock loading; Author-Supplied Keyword: Single crystals; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijimpeng.2010.10.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60520350&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eyet, Nicole AU - Freel, Keith AU - Heaven, Michael C. AU - Viggiano, A.A. T1 - Reactions of positive ions with ClN3 at 300K JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2011/06// VL - 303 IS - 2/3 M3 - Article SP - 220 EP - 224 SN - 13873806 AB - Abstract: The kinetics of eighteen positive ions with chlorine azide (ClN3) have been studied using a selected ion flow tube (SIFT). These measurements allowed for the estimation of both the ionization energy, >930kJmol−1 (>9.6eV), and the proton affinity, 713±41kJmol−1, of chlorine azide. Reaction rate constants have been determined. Product ions have been identified, and quantified when synthetic complications allowed. In addition, general reaction trends have been observed. A reaction coordinate diagram for the novel reaction of N+ with ClN3 is discussed. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CATIONS KW - CHEMICAL reactions KW - CHEMICAL kinetics KW - AZIDES KW - ION flow dynamics KW - BRANCHING ratios (Nuclear physics) KW - STOPPING power (Nuclear physics) KW - Branching ratios KW - Chlorine azide KW - Ionization potential KW - Kinetics KW - Proton affinity KW - Rate constants N1 - Accession Number: 60665978; Eyet, Nicole 1,2,3 Freel, Keith 2,4 Heaven, Michael C. 4 Viggiano, A.A. 2; Email Address: afrl.rvb.pa@hanscom.af.mil; Affiliation: 1: Department of Chemistry, St. Anselm College, 100 Saint Anselm Drive, Manchester, NH 03102, USA 2: Space Vehicles Directorate, Air Force Research Laboratory, 29 Randolph Road, Hanscom Air Force Base, MA 01731-3010, USA 3: Institute for Scientific Research, Boston College, USA 4: Chemistry Department, Emory University, Atlanta, GA 30322, USA; Source Info: Jun2011, Vol. 303 Issue 2/3, p220; Subject Term: CATIONS; Subject Term: CHEMICAL reactions; Subject Term: CHEMICAL kinetics; Subject Term: AZIDES; Subject Term: ION flow dynamics; Subject Term: BRANCHING ratios (Nuclear physics); Subject Term: STOPPING power (Nuclear physics); Author-Supplied Keyword: Branching ratios; Author-Supplied Keyword: Chlorine azide; Author-Supplied Keyword: Ionization potential; Author-Supplied Keyword: Kinetics; Author-Supplied Keyword: Proton affinity; Author-Supplied Keyword: Rate constants; NAICS/Industry Codes: 325920 Explosives Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.ijms.2011.02.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60665978&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kapper, M. G. AU - Cambier, J.-L. T1 - Ionizing shocks in argon. Part I: Collisional-radiative model and steady-state structure. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/06// VL - 109 IS - 11 M3 - Article SP - 113308 PB - American Institute of Physics SN - 00218979 AB - A detailed collisional-radiative model is developed and coupled with a single-fluid, two-temperature convection model for the transport of shock-heated argon. The model is used in a systematic approach to examine the effects of the collision cross sections on the shock structure, including the relaxation layer and subsequent radiative-cooling regime. We present a comparison with previous experimental results obtained at the University of Toronto's Institute of Aerospace Studies and the Australian National University, which serve as benchmarks to the model. It is shown here that ionization proceeds via the ladder-climbing mechanism, in which the upper levels play a dominant role as compared to the metastable states. Taking this into account, the present model is able to accurately reproduce the metastable populations in the relaxation zone measured in previous experiments, which is not possible with a two-step model. Our numerical results of the radiative-cooling region are in close agreement with experiments and have been obtained without having to consider radiative transport. In particular, it found that spontaneous emission involving the upper levels together with Bremsstrahlung emission account for nearly all radiative losses; all other significant radiative processes, resulting in transitions into the ground-state, are mostly self-absorbed and have a lesser impact. The effects of electron heat conduction are also considered and shown to have a large impact on the electron-priming region immediately behind the shock front; however, the overall effect on the induction length, i.e., the distance between the shock front and the electron avalanche, is small. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLISIONS (Nuclear physics) KW - ARGON KW - RADIATION KW - COLLISIONS (Physics) KW - PARTICLES (Nuclear physics) KW - BREMSSTRAHLUNG N1 - Accession Number: 61267676; Kapper, M. G. 1 Cambier, J.-L. 1; Email Address: jean-luc.cambier@edwards.af.mil; Affiliation: 1: Air Force Research Laboratory, Edwards AFB, California 93524, USA; Source Info: Jun2011, Vol. 109 Issue 11, p113308; Subject Term: COLLISIONS (Nuclear physics); Subject Term: ARGON; Subject Term: RADIATION; Subject Term: COLLISIONS (Physics); Subject Term: PARTICLES (Nuclear physics); Subject Term: BREMSSTRAHLUNG; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 14p; Illustrations: 11 Charts, 12 Graphs; Document Type: Article L3 - 10.1063/1.3585688 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61267676&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kapper, M. G. AU - Cambier, J.-L. T1 - Ionizing shocks in argon. Part II: Transient and multi-dimensional effects. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/06// VL - 109 IS - 11 M3 - Article SP - 113309 PB - American Institute of Physics SN - 00218979 AB - We extend the computations of ionizing shocks in argon to the unsteady and multi-dimensional, using a collisional-radiative model and a single-fluid, two-temperature formulation of the conservation equations. It is shown that the fluctuations of the shock structure observed in shock-tube experiments can be reproduced by the numerical simulations and explained on the basis of the coupling of the nonlinear kinetics of the collisional-radiative model with wave propagation within the induction zone. The mechanism is analogous to instabilities of detonation waves and also produces a cellular structure commonly observed in gaseous detonations. We suggest that detailed simulations of such unsteady phenomena can yield further information for the validation of nonequilibrium kinetics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONIZING shock waves KW - ARGON KW - HIGH temperature plasmas KW - SIMULATION methods & models KW - DYNAMICS KW - IONIZATION of gases KW - SHOCK waves N1 - Accession Number: 61267680; Kapper, M. G. 1 Cambier, J.-L. 1; Email Address: jean-luc.cambier@edwards.af.mil; Affiliation: 1: Air Force Research Laboratory, Edwards AFB, CA 93524, USA; Source Info: Jun2011, Vol. 109 Issue 11, p113309; Subject Term: IONIZING shock waves; Subject Term: ARGON; Subject Term: HIGH temperature plasmas; Subject Term: SIMULATION methods & models; Subject Term: DYNAMICS; Subject Term: IONIZATION of gases; Subject Term: SHOCK waves; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 11p; Illustrations: 9 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1063/1.3585694 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61267680&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roslyak, Oleksiy AU - Gumbs, Godfrey AU - Huang, Danhong T1 - Plasma excitations of dressed Dirac electrons in graphene layers. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/06// VL - 109 IS - 11 M3 - Article SP - 113721 PB - American Institute of Physics SN - 00218979 AB - Collective plasma excitations of optically dressed Dirac electrons in single and double graphene layers are calculated in the RPA. The presence of circularly polarized light gives rise to an energy gap Eg between the conduction and valence energy bands. Its value may be adjusted by varying the frequency and intensity of the light, and may reach values of the gap reported for epitaxially grown graphene and far exceeding that caused by spin-orbit coupling. We report plasmon dispersion relations for various energy gaps and separations between graphene layers. For a single graphene sheet, we find that plasmon modes may be excited for larger wave vector and frequency when subjected to light. For double layers, we obtained an optical and phononlike mode and found that the optical mode is not as sensitive as the phononlike mode in the long wavelength limit when the layer separation is varied, for a chosen Eg. The dressed electron plasma-although massive-still has Dirac origin, giving rise to anomalous plasmon behavior upon crossing the ω=hνFq cone. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - GRAPHENE KW - PHOTOCONDUCTIVITY KW - DIRAC equation KW - QUANTUM field theory KW - WAVE equation N1 - Accession Number: 61267658; Roslyak, Oleksiy 1; Email Address: avroslyak@gmail.com Gumbs, Godfrey 1 Huang, Danhong 2; Affiliation: 1: Department of Physics and Astronomy, Hunter College at the City University of New York, 695 Park Avenue, New York, New York 10065, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA; Source Info: Jun2011, Vol. 109 Issue 11, p113721; Subject Term: ELECTRONS; Subject Term: GRAPHENE; Subject Term: PHOTOCONDUCTIVITY; Subject Term: DIRAC equation; Subject Term: QUANTUM field theory; Subject Term: WAVE equation; Number of Pages: 8p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1063/1.3596519 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61267658&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sihn, Sangwook AU - Roy, Ajit K. T1 - Micromechanical analysis for transverse thermal conductivity of composites. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2011/06// VL - 45 IS - 11 M3 - Article SP - 1245 EP - 1255 SN - 00219983 AB - Micromechanical analyses were conducted for the prediction of transverse thermal conductivity of laminated composites. We reproduced and reinvestigated both analytic and numerical models with regular and randomly distributed fibers in matrix material. A parametric study was conducted for wide ranges of fiber volume fractions and fiber-to-matrix thermal conductivity ratios. The numerical solutions using finite element (FE) analysis were compared with various analytic solutions from simple and enhanced rule or mixtures and an effective inclusion method (EIM). It was found that the EIM yields a reasonably agreeable solution with the FE solution using a hexagonal-array of regular fiber distribution for wide ranges of fiber volume fraction and fiber-to-matrix thermal conductivity ratios, which makes the EIM a useful method in predicting various multiphysical transverse properties of composites. Comparison of the results from the regular- and random-fiber models indicates that the transverse thermal conductivity of composites can significantly be affected by the random fiber distributions, especially at high fiber volume fractions. A similar conclusion was made for the foams with random pore distribution. It was shown that the predictions with the random fiber distribution agree well with the experimental data. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROMECHANICS KW - THERMAL conductivity KW - COMPOSITE materials KW - LAMINATED materials KW - FINITE element method KW - RANDOM variables KW - MATHEMATICAL models KW - PARAMETER estimation KW - composites KW - finite element analysis KW - random fiber distribution KW - thermal conductivity N1 - Accession Number: 60980843; Sihn, Sangwook 1 Roy, Ajit K. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXBT, Wright-Patterson Air Force Base, OH 45433, USA, Multi-Scale Composites and Polymers Division, University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0060, USA, sangwook@stanfordalumni.org 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXBT, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Jun2011, Vol. 45 Issue 11, p1245; Subject Term: MICROMECHANICS; Subject Term: THERMAL conductivity; Subject Term: COMPOSITE materials; Subject Term: LAMINATED materials; Subject Term: FINITE element method; Subject Term: RANDOM variables; Subject Term: MATHEMATICAL models; Subject Term: PARAMETER estimation; Author-Supplied Keyword: composites; Author-Supplied Keyword: finite element analysis; Author-Supplied Keyword: random fiber distribution; Author-Supplied Keyword: thermal conductivity; Number of Pages: 11p; Document Type: Article; Full Text Word Count: 6143 L3 - 10.1177/0021998310382311 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60980843&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sheng, Qin AU - Guha, Shekhar AU - Gonzalez, Leonel P. T1 - An exponential transformation based splitting method for fast computations of highly oscillatory solutions JO - Journal of Computational & Applied Mathematics JF - Journal of Computational & Applied Mathematics Y1 - 2011/06// VL - 235 IS - 15 M3 - Article SP - 4452 EP - 4463 SN - 03770427 AB - Abstract: Splitting, or decomposition, methods have been widely used for achieving higher computational efficiency in solving wave equations. A major concern has remained, however, if the wave number involved is exceptionally large. In the case, merits of a conventional splitting method may diminish due to the fact that tiny discretization steps need to be employed to compensate high oscillations. This paper studies an alternative way for solving highly oscillatory paraxial wave problems via a modified splitting strategy. In the process, an exponential transformation is first introduced to convert the underlying differential equation to coupled nonlinear equations. Then the resulted oscillation-free system is treated by a Local-One-Dimensional (LOD) scheme for desired accuracy, efficiency and computability. The splitting method acquired is asymptotically stable and easy to use. Computational experiments are given to illustrate our numerical procedures. [Copyright &y& Elsevier] AB - Copyright of Journal of Computational & Applied Mathematics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVE equation -- Numerical solutions KW - DIFFERENTIAL equations -- Numerical solutions KW - SPLITTING extrapolation method KW - DECOMPOSITION (Mathematics) KW - OSCILLATIONS KW - ALGORITHMS KW - 65Z05 KW - Algorithmic efficiency KW - Asymptotic stability KW - Highly oscillatory wave problems KW - Linear and nonlinear equations KW - Splitting method KW - Transformations N1 - Accession Number: 60923762; Sheng, Qin 1; Email Address: Qin_Sheng@baylor.edu Guha, Shekhar 2 Gonzalez, Leonel P. 2; Affiliation: 1: Department of Mathematics, Center for Astrophysics, Space Physics and Engineering Research, Baylor University, Waco, TX 76798-7328, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Jun2011, Vol. 235 Issue 15, p4452; Subject Term: WAVE equation -- Numerical solutions; Subject Term: DIFFERENTIAL equations -- Numerical solutions; Subject Term: SPLITTING extrapolation method; Subject Term: DECOMPOSITION (Mathematics); Subject Term: OSCILLATIONS; Subject Term: ALGORITHMS; Author-Supplied Keyword: 65Z05; Author-Supplied Keyword: Algorithmic efficiency; Author-Supplied Keyword: Asymptotic stability; Author-Supplied Keyword: Highly oscillatory wave problems; Author-Supplied Keyword: Linear and nonlinear equations; Author-Supplied Keyword: Splitting method; Author-Supplied Keyword: Transformations; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.cam.2011.04.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60923762&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Scott, Robin C. AU - Leedy, Kevin D. AU - Bayraktaroglu, Burhan AU - Look, David C. AU - Zhang, Yong-Hang T1 - Effects of Ar vs. O2 ambient on pulsed-laser-deposited Ga-doped ZnO JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2011/06// VL - 324 IS - 1 M3 - Article SP - 110 EP - 114 SN - 00220248 AB - Abstract: Ga-doped ZnO films were deposited by pulsed laser deposition (PLD) at 200°C and 10mTorr in either pure argon (Ar films) or in oxygen (O2 films). The bulk resistivity of the Ar films is <2×10−4 Ωcm at 300K, two orders of magnitude lower than that of the O2 films. In the Ar films, the donor concentration N D as determined by a detailed Hall-effect analysis is close to 100% of the total Ga concentration [Ga] measured by secondary ion mass spectrometry (SIMS), while in the O2 films N D is less than 50% of [Ga]. Furthermore, the compensation ratio K=N A /N D is >90% for the O2 films and <60% for the Ar films. Yet, when the oxygen pressure is reduced to 0.2mTorr, the O2 films have resistivities of about 5×10−4 Ωcm, approaching those of the Ar films. These results suggest that oxygen-rich environments produce Ga/O complexes that reduce the dopant activation efficiency and thus decrease N D and increase K. Some of these complexes may also contribute to the increase in deep centers observed in photoluminescence. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide thin films KW - PULSED laser deposition KW - GALLIUM (Metal) KW - ARGON KW - OXYGEN KW - PHOTOLUMINESCENCE KW - SECONDARY ion mass spectrometry KW - A3. Pulsed laser deposition KW - B1. Transparent conductive oxide N1 - Accession Number: 60928787; Scott, Robin C. 1; Email Address: Robin.Scott@asu.edu Leedy, Kevin D. 2 Bayraktaroglu, Burhan 2 Look, David C. 3 Zhang, Yong-Hang 4; Affiliation: 1: School of Mechanical, Aerospace, Chemical and Materials Engineering, Arizona State University, GWC 206/ECEE, 650 E. Tyler Mall, Tempe, AZ 85287-5706, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 3: Semiconductor Research Center, Wright State University, Dayton, OH 45435, USA 4: School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, AZ 85287, USA; Source Info: Jun2011, Vol. 324 Issue 1, p110; Subject Term: ZINC oxide thin films; Subject Term: PULSED laser deposition; Subject Term: GALLIUM (Metal); Subject Term: ARGON; Subject Term: OXYGEN; Subject Term: PHOTOLUMINESCENCE; Subject Term: SECONDARY ion mass spectrometry; Author-Supplied Keyword: A3. Pulsed laser deposition; Author-Supplied Keyword: B1. Transparent conductive oxide; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jcrysgro.2011.03.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60928787&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dewey, Steven Clifford AU - Whetstone, Zachary David AU - Kearfott, Kimberlee Jane T1 - A method for determining the analytical form of a radionuclide depth distribution using multiple gamma spectrometry measurements JO - Journal of Environmental Radioactivity JF - Journal of Environmental Radioactivity Y1 - 2011/06// VL - 102 IS - 6 M3 - Article SP - 581 EP - 588 SN - 0265931X AB - Abstract: When characterizing environmental radioactivity, whether in the soil or within concrete building structures undergoing remediation or decommissioning, it is highly desirable to know the radionuclide depth distribution. This is typically modeled using continuous analytical expressions, whose forms are believed to best represent the true source distributions. In situ gamma ray spectroscopic measurements are combined with these models to fully describe the source. Currently, the choice of analytical expressions is based upon prior experimental core sampling results at similar locations, any known site history, or radionuclide transport models. This paper presents a method, employing multiple in situ measurements at a single site, for determining the analytical form that best represents the true depth distribution present. The measurements can be made using a variety of geometries, each of which has a different sensitivity variation with source spatial distribution. Using non-linear least squares numerical optimization methods, the results can be fit to a collection of analytical models and the parameters of each model determined. The analytical expression that results in the fit with the lowest residual is selected as the most accurate representation. A cursory examination is made of the effects of measurement errors on the method. [Copyright &y& Elsevier] AB - Copyright of Journal of Environmental Radioactivity is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIOISOTOPES KW - BACKGROUND radiation KW - GAMMA ray spectrometry KW - ENVIRONMENTAL remediation KW - GERMANIUM diodes KW - MEASUREMENT errors KW - MATHEMATICAL optimization KW - LEAST squares KW - Calibration KW - Environmental radioactivity KW - Gamma spectrometry KW - Germanium detector KW - In situ measurements N1 - Accession Number: 60665250; Dewey, Steven Clifford 1; Email Address: sdewey001@gmail.com Whetstone, Zachary David 2; Email Address: zacwhets@umich.edu Kearfott, Kimberlee Jane 2; Email Address: kearfott@umich.edu; Affiliation: 1: United States Air Force School of Aerospace Medicine, Occupational Environmental Health Division, Health Physics Branch, Radiation Analysis Laboratories, 2350 Gillingham Drive, Brooks City-Base, TX 78235, United States 2: Radiological Health Engineering Laboratory, Department of Nuclear Engineering and Radiological Sciences, University of Michigan, 2355 Bonisteel Boulevard, 1906 Cooley Building, Ann Arbor, MI 48109-2104, United States; Source Info: Jun2011, Vol. 102 Issue 6, p581; Subject Term: RADIOISOTOPES; Subject Term: BACKGROUND radiation; Subject Term: GAMMA ray spectrometry; Subject Term: ENVIRONMENTAL remediation; Subject Term: GERMANIUM diodes; Subject Term: MEASUREMENT errors; Subject Term: MATHEMATICAL optimization; Subject Term: LEAST squares; Author-Supplied Keyword: Calibration; Author-Supplied Keyword: Environmental radioactivity; Author-Supplied Keyword: Gamma spectrometry; Author-Supplied Keyword: Germanium detector; Author-Supplied Keyword: In situ measurements; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 562910 Remediation Services; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jenvrad.2011.03.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60665250&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lane, Steven A. AU - Higgins, John AU - Biskner, Adam AU - Sanford, Greg AU - Springer, Chris AU - Berg, Jerome T1 - Out-of-Autoclave Composite Fairing Design, Fabrication, and Test. JO - Journal of Manufacturing Science & Engineering JF - Journal of Manufacturing Science & Engineering Y1 - 2011/06// VL - 133 IS - 3 M3 - Article SP - 031020-1 EP - 031020-10 SN - 10871357 AB - This paper documents a recent R&D effort conducted by the Air Force Research Laboratory, Space Vehicles Directorate, to assess the feasibility of fabricating large composite launch vehicle fairings without the use of autoclaves. Two composite manufacturing approaches were demonstrated: vacuum-bag compaction with oven cure and vacuum assisted resin transfer molding with oven cure. For this project, a 2.8-m diameter fairing was developed for the Minotaur IV launch system. The prototype fairing was instrumented and tested up to qualification test loads. No damage or permanent deformations were observed. Measured strain and displacement data were compared to model predictions; trends and amplitudes were generally in agreement. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Manufacturing Science & Engineering is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AUTOCLAVES KW - FAIRINGS (Aerodynamics) KW - COMPOSITE materials KW - SOLID freeform fabrication KW - PREDICTION models KW - AIR Force Research Laboratory (Hanscom AFB, Mass). Information Directorate N1 - Accession Number: 65646970; Lane, Steven A. 1; Email Address: Steven.Lane@kirtland.af.mil Higgins, John 1; Email Address: John.Higgins@kirtland.af.mil Biskner, Adam 2; Email Address: abiskner@loadpath.com Sanford, Greg; Email Address: gsanford@loadpath.com Springer, Chris 3; Email Address: Chris.Springer@atk.com Berg, Jerome 3; Email Address: Jerome.Berg@atk.com; Affiliation: 1: Air Force Research Laboratory, 3550 Aberdeen Avenue, SE,. Kirtland AFB, NM 87117 2: LoadPath LLC, 5555 Zuni Road, SE, Albuquerque, NM 87108 3: Alliant Techsystems Space Systems Inc., ATK Aerospace Structures Division, Clearfield UT 84016; Source Info: Jun2011, Vol. 133 Issue 3, p031020-1; Subject Term: AUTOCLAVES; Subject Term: FAIRINGS (Aerodynamics); Subject Term: COMPOSITE materials; Subject Term: SOLID freeform fabrication; Subject Term: PREDICTION models; Company/Entity: AIR Force Research Laboratory (Hanscom AFB, Mass). Information Directorate; NAICS/Industry Codes: 332420 Metal Tank (Heavy Gauge) Manufacturing; NAICS/Industry Codes: 339113 Surgical Appliance and Supplies Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1115/1.4004321 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65646970&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pham, K. D. T1 - Performance-Reliability-Aided Decision-Making in Multiperson Quadratic Decision Games Against Jamming and Estimation Confrontations. JO - Journal of Optimization Theory & Applications JF - Journal of Optimization Theory & Applications Y1 - 2011/06// VL - 149 IS - 3 M3 - Article SP - 599 EP - 629 SN - 00223239 AB - The work presents an attainment of risk-averse cooperative solutions in multi-person, single-objective decision problems for practical situations of the probabilistic (rather than deterministic) nature of performance reliability, its consequences on measuring performance reliability, and the difference between predicting and designing for performance reliability. In particular, some novel research contributions include: (i) closed-loop performance assessment via a performance-information analysis; (ii) cooperative decision selection via a risk-value model; and (iii) risk-averse cooperative decision strategies against confrontations and noncooperation from a malevolent opponent and a stationary environment, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Optimization Theory & Applications is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL optimization KW - GAME theory KW - DECISION making KW - MATHEMATICAL models KW - DIFFERENTIAL games KW - ESTIMATION theory KW - Jamming confrontations KW - Multiperson quadratic decision game KW - Performance-information analysis KW - Risk-averse decision making KW - Statistical optimal control N1 - Accession Number: 60411502; Pham, K. D. 1; Email Address: pham.dai.khanh@gmail.com; Affiliation: 1: The United States Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, Albuquerque, NM 87117, USA; Source Info: Jun2011, Vol. 149 Issue 3, p599; Subject Term: MATHEMATICAL optimization; Subject Term: GAME theory; Subject Term: DECISION making; Subject Term: MATHEMATICAL models; Subject Term: DIFFERENTIAL games; Subject Term: ESTIMATION theory; Author-Supplied Keyword: Jamming confrontations; Author-Supplied Keyword: Multiperson quadratic decision game; Author-Supplied Keyword: Performance-information analysis; Author-Supplied Keyword: Risk-averse decision making; Author-Supplied Keyword: Statistical optimal control; Number of Pages: 31p; Document Type: Article L3 - 10.1007/s10957-011-9794-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60411502&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chung, Stephen W. AU - Guliants, Elena A. AU - Bunker, Christopher E. AU - Jelliss, Paul A. AU - Buckner, Steven W. T1 - Size-dependent nanoparticle reaction enthalpy: Oxidation of aluminum nanoparticles JO - Journal of Physics & Chemistry of Solids JF - Journal of Physics & Chemistry of Solids Y1 - 2011/06// VL - 72 IS - 6 M3 - Article SP - 719 EP - 724 SN - 00223697 AB - Abstract: Here we present a model describing the particle size dependence of the oxidation enthalpy of aluminum nanoparticles. The model includes the size dependence of the cohesive energy of the reactant particles, the size dependence of the product lattice energy, extent of product agglomeration, and surface capping effects. The strongest effects on aluminum nanoparticle energy release occur for particle diameters below 10nm, with enhanced energy release for agglomerated oxide products and decreased energy release for nanoscale oxide products. An unusual effect is observed with all nanoparticle reaction enthalpies converging to the bulk value when agglomeration of the products approaches the transition between nanoparticle→nanoparticle and nanoparticle→bulk energetics. Optimal energy output for Al NP oxidation should occur for sub-10-nm particles reacting with significant agglomeration. [Copyright &y& Elsevier] AB - Copyright of Journal of Physics & Chemistry of Solids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - ENTHALPY KW - OXIDATION KW - ALUMINUM KW - THERMODYNAMICS KW - NANOSTRUCTURES KW - AGGLOMERATION (Materials) KW - A. Metals KW - A. Nanostructures KW - D. Thermodynamic properties N1 - Accession Number: 60791178; Chung, Stephen W. 1 Guliants, Elena A. 2 Bunker, Christopher E. 3 Jelliss, Paul A. 1 Buckner, Steven W. 1; Email Address: buckners@slu.edu; Affiliation: 1: Saint Louis University, Department of Chemistry, 3501 Laclede Avenue, St. Louis, MO 63103, USA 2: Department of Electrical and Computer Engineering, University of Dayton Research Institute, Dayton, OH 45469, USA 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Jun2011, Vol. 72 Issue 6, p719; Subject Term: NANOPARTICLES; Subject Term: ENTHALPY; Subject Term: OXIDATION; Subject Term: ALUMINUM; Subject Term: THERMODYNAMICS; Subject Term: NANOSTRUCTURES; Subject Term: AGGLOMERATION (Materials); Author-Supplied Keyword: A. Metals; Author-Supplied Keyword: A. Nanostructures; Author-Supplied Keyword: D. Thermodynamic properties; NAICS/Industry Codes: 212210 Iron Ore Mining; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jpcs.2011.02.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60791178&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Blodgett, Mark P. AU - Lindgren, Eric A. AU - Steffes, Gary J. AU - Knopp, Jeremy S. T1 - Scattering of obliquely incident shear waves from a cylindrical cavity. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2011/06// VL - 129 IS - 6 M3 - Article SP - 3661 EP - 3675 SN - 00014966 AB - Prior work has proposed the use of ultrasonic angle-beam shear wave techniques to detect cracks of varying angular location around fastener sites by generating and detecting creeping waves. To better understand the nature of the scattering problem and quantify the role of creeping waves in fastener site inspections, a 3D analytical model was developed for the propagation and scattering of an obliquely incident plane shear wave from a cylindrical cavity with arbitrary shear wave polarization. The generation and decay of the spiral creeping waves was found to be dependent on both the angle of incidence and polarization of the plane shear wave. A difference between the angle of displacement in 3D and the direction of propagation for the spiral creeping wave was observed and attributed to differences in the curvature of the cavity surface for the tangential and vertical (z) directions. Using the model, practical insight was presented on measuring the displacement response in the far-field from the hole. Both analytical and experimental results highlighted the value of the diffracted and leaky spiral creeping wave signals for nondestructive evaluation of a crack located on the cavity. Last, array and signal processing methods are discussed to improve the resolution of the weaker creeping wave signals in the presence of noise. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHEAR waves KW - SIGNALS & signaling KW - ULTRASONIC testing KW - ULTRASONIC waves KW - POLARIZATION spectroscopy N1 - Accession Number: 61468690; Aldrin, John C. 1; Email Address: aldrin@computationaltools.com Blodgett, Mark P. 1 Lindgren, Eric A. 1 Steffes, Gary J. 1 Knopp, Jeremy S. 1; Affiliation: 1: Air Force Research Laboratory (AFRL/RXLP), 2230 Tenth Street, Wright-Patterson AFB, Ohio 45433; Source Info: Jun2011, Vol. 129 Issue 6, p3661; Subject Term: SHEAR waves; Subject Term: SIGNALS & signaling; Subject Term: ULTRASONIC testing; Subject Term: ULTRASONIC waves; Subject Term: POLARIZATION spectroscopy; Number of Pages: 15p; Document Type: Article L3 - 10.1121/1.3583540 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61468690&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boakye, Emmanuel E. AU - Mogilevsky, Pavel AU - Hay, Randall S. AU - Cinibulk, Michael K. T1 - Rare-Earth Disilicates As Oxidation-Resistant Fiber Coatings for Silicon Carbide Ceramic-Matrix Composites. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2011/06// VL - 94 IS - 6 M3 - Article SP - 1716 EP - 1724 PB - Wiley-Blackwell SN - 00027820 AB - Current Siγ-based ceramiγ-matrix composites (Siγ-SiC CMCs) rely on carbon or boron nitride fiber-matrix interphases for toughness and flaw tolerance. However, oxidation of these interphases can be performance limiting in many CMC applications. The γ-polymorph of the rare-earth disilicates (RE2 Si2O7) is a potential oxidation-resistant alternative to carbon or BN. The formation of γ-Y2Si2O7 and γ-Ho2Si2O7 at different temperatures and processing environments was investigated. Silica-yttrium hydroxide and silica-holmium hydroxide dispersions were made and heat treated at 12001-14001C for 8 h in air and argon. LiNO3 was added to the dispersions to enhance the formation of γ-Y2Si2O7 and γ-Ho2Si2O7. The effects of excess silica and LiNO3 dopant on the formation of γ-Y2Si2O7 were investigated. Coatings of Y2Si2O7 and Ho2Si2O7 were made on a-SiC plate and SCS-0 SiC fiber using these dispersions. These were heat treated in argon and argon-500 ppm oxygen mixtures at 1400°C/8 h. For coatings heat treated in argon-500 ppm oxygen mixtures, X-ray diffraction showed the formation of single phase γ-Ho2Si2O7 and a mixture of γ and β-Y2Si2O7 at 14001C. Scanning electron microscopic image analysis gave an estimate of 18 vol% of excess silica for γ-Y2Si2O7 formed with high Si:Y ratio and ~5 vol% excess silica for material formed with lower Si:Y ratio. Transmission electron microscopy of samples directly beneath indentations showed both extensive dislocation slip and fracture. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CERAMIC-matrix composites KW - CARBON KW - BORON nitride KW - RARE earths KW - SILICON carbide N1 - Accession Number: 61058098; Boakye, Emmanuel E. 1; Email Address: emmanuel.boakye@wpafb.af.mil Mogilevsky, Pavel 1 Hay, Randall S. 2 Cinibulk, Michael K. 2; Affiliation: 1: UES Inc., Dayton, Ohio 45432 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433-78173; Source Info: Jun2011, Vol. 94 Issue 6, p1716; Subject Term: CERAMIC-matrix composites; Subject Term: CARBON; Subject Term: BORON nitride; Subject Term: RARE earths; Subject Term: SILICON carbide; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 9p; Illustrations: 2 Black and White Photographs, 4 Charts, 8 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2010.04306.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61058098&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anderson, Paul E. AU - Mahle, Deirdre A. AU - Doom, Travis E. AU - Reo, Nicholas V. AU - DelRaso, Nicholas J. AU - Raymer, Michael L. T1 - Dynamic adaptive binning: an improved quantification technique for NMR spectroscopic data. JO - Metabolomics JF - Metabolomics Y1 - 2011/06// VL - 7 IS - 2 M3 - Article SP - 179 EP - 190 SN - 15733882 AB - The interpretation of nuclear magnetic resonance (NMR) experimental results for metabolomics studies requires intensive signal processing and multivariate data analysis techniques. A key step in this process is the quantification of spectral features, which is commonly accomplished by dividing an NMR spectrum into several hundred integral regions or bins. Binning attempts to minimize effects from variations in peak positions caused by sample pH, ionic strength, and composition, while reducing the dimensionality for multivariate statistical analyses. Herein we develop an improved novel spectral quantification technique, dynamic adaptive binning. With this technique, bin boundaries are determined by optimizing an objective function using a dynamic programming strategy. The objective function measures the quality of a bin configuration based on the number of peaks per bin. This technique shows a significant improvement over both traditional uniform binning and other adaptive binning techniques. This improvement is quantified via synthetic validation sets by analyzing an algorithm's ability to create bins that do not contain more than a single peak and that maximize the distance from peak to bin boundary. The validation sets are developed by characterizing the salient distributions in experimental NMR spectroscopic data. Further, dynamic adaptive binning is applied to a H NMR-based experiment to monitor rat urinary metabolites to empirically demonstrate improved spectral quantification. [ABSTRACT FROM AUTHOR] AB - Copyright of Metabolomics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUCLEAR magnetic resonance -- Research KW - SIGNAL processing -- Digital techniques KW - DATA binning KW - METABOLITES KW - PROTEOMICS KW - GENOMICS KW - DYNAMIC programming KW - FOURIER transforms KW - WAVELETS (Mathematics) KW - Binning KW - Dynamic programming KW - Metabolomics KW - NMR KW - Quantification N1 - Accession Number: 60686673; Anderson, Paul E. 1; Email Address: anderson.51@wright.edu Mahle, Deirdre A. 1 Doom, Travis E. 1 Reo, Nicholas V. 2 DelRaso, Nicholas J. 3 Raymer, Michael L. 1; Affiliation: 1: Department of Computer Science and Engineering, Wright State University, Dayton 45435, U.S.A. 2: Department of Biochemistry and Molecular Biology, Wright State University, Boonshoft School of Medicine, Cox Institute, Dayton 45429, U.S.A. 3: Air Force Research Laboratory, Biosciences and Protection Division, Wright-Patterson AFB, Dayton 45433, U.S.A.; Source Info: Jun2011, Vol. 7 Issue 2, p179; Subject Term: NUCLEAR magnetic resonance -- Research; Subject Term: SIGNAL processing -- Digital techniques; Subject Term: DATA binning; Subject Term: METABOLITES; Subject Term: PROTEOMICS; Subject Term: GENOMICS; Subject Term: DYNAMIC programming; Subject Term: FOURIER transforms; Subject Term: WAVELETS (Mathematics); Author-Supplied Keyword: Binning; Author-Supplied Keyword: Dynamic programming; Author-Supplied Keyword: Metabolomics; Author-Supplied Keyword: NMR; Author-Supplied Keyword: Quantification; Number of Pages: 12p; Illustrations: 3 Charts, 3 Graphs; Document Type: Article L3 - 10.1007/s11306-010-0242-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60686673&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mahle, Deirdre A. AU - Anderson, Paul E. AU - DelRaso, Nicholas AU - Raymer, Michael AU - Neuforth, Andrew AU - Reo, Nicholas T1 - A generalized model for metabolomic analyses: application to dose and time dependent toxicity. JO - Metabolomics JF - Metabolomics Y1 - 2011/06// VL - 7 IS - 2 M3 - Article SP - 206 EP - 216 SN - 15733882 AB - metabolomic technology expands, validated techniques for analyzing highly dimensional categorical data are becoming increasingly important. This manuscript presents a novel latent vector-based methodology for analyzing complex data sets with multiple groups that include both high and low doses using orthogonal projections to latent structures (OPLS) coupled with hierarchical clustering. This general methodology allows complex experimental designs (e.g., multiple dose and time combinations) to be encoded and directly compared. Further, it allows for the inclusion of low dose samples that do not exhibit a strong enough individual response to be modeled independently. A dose- and time-responsive metabolomic study was completed to evaluate and demonstrate this methodology. Single doses (0.1-100 mg/kg body weight) of α-naphthylisothiocyanate (ANIT), a common model of hepatic cholestasis, were administered orally in corn oil to male Fischer 344 rats. Urine samples were collected pre-dose and daily through day-4 post-dose. Blood samples were collected pre and post-dose to assess indices of clinical toxicity. Urine samples were analyzed by H-NMR spectroscopy, and the spectra were adaptively binned to reduce dimensionality. The proposed methodology for NMR-based urinary metabolomics was sensitive enough to detect ANIT-induced effects with respect to both dose and time at doses below the threshold of clinical toxicity. A pattern of ANIT-dependent effects established at the highest dose was seen in the 50 and 20 mg/kg dose groups, an effect not directly identifiable with individual principal component analysis (PCA). Coupling the pattern found by the OPLS algorithm and hierarchical clustering revealed a relationship between the 100, 50 and 20 mg/kg dose groups, suggesting a characteristic effect of ANIT exposure. These studies demonstrate that the use of a metabolomics approach with flexible binning of H spectra and appropriate application of multivariate analyses can reveal biologically relevant information about the temporal metabolic perturbations caused by exposure and toxicity. [ABSTRACT FROM AUTHOR] AB - Copyright of Metabolomics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METABOLISM KW - RESEARCH KW - CATEGORIES (Mathematics) KW - TOXICOLOGY KW - NUCLEAR magnetic resonance KW - ORTHOGRAPHIC projection KW - LATENT structure analysis KW - EXPERIMENTAL design KW - CHOLESTASIS KW - RATS as laboratory animals KW - Adaptive binning KW - High dimension categorical data KW - NMR metabolomics N1 - Accession Number: 60686679; Mahle, Deirdre A. 1; Email Address: deirdre.mahle@wpafb.af.mil Anderson, Paul E. 1 DelRaso, Nicholas 1 Raymer, Michael 2 Neuforth, Andrew 3 Reo, Nicholas 3; Affiliation: 1: Air Force Research Laboratory, 711th Human Performance Wing, Human Effectiveness Directorate, Wright-Patterson Air Force Base, Dayton 45433, U.S.A. 2: Department of Computer Science and Engineering, Wright State University, Dayton 45435, U.S.A. 3: Magnetic Resonance Laboratory, Department of Biochemistry and Molecular Biology, Boonshoft School of Medicine, Wright State University, Dayton 45429, U.S.A.; Source Info: Jun2011, Vol. 7 Issue 2, p206; Subject Term: METABOLISM; Subject Term: RESEARCH; Subject Term: CATEGORIES (Mathematics); Subject Term: TOXICOLOGY; Subject Term: NUCLEAR magnetic resonance; Subject Term: ORTHOGRAPHIC projection; Subject Term: LATENT structure analysis; Subject Term: EXPERIMENTAL design; Subject Term: CHOLESTASIS; Subject Term: RATS as laboratory animals; Author-Supplied Keyword: Adaptive binning; Author-Supplied Keyword: High dimension categorical data; Author-Supplied Keyword: NMR metabolomics; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 11p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1007/s11306-010-0246-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60686679&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mastroianni, George R. AU - Scott, Wilbur J. T1 - Reframing Suicide in the Military. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College Y1 - 2011///Summer2011 VL - 41 IS - 2 M3 - Article SP - 6 EP - 21 SN - 00311723 AB - The article looks at suicides of U.S. military personnel as of 2011. It notes that the suicide rate has risen sharply since 2001 in the Army and Marines, but not in the Navy or Air Force. The author presents evidence countering some widespread assumptions about military suicide, for instance that multiple deployments to war zones are a significant risk factor. He outlines the theories of sociologist Emile Durkheim and psychologist Thomas Joiner to develop a better understanding of the issue. KW - MILITARY personnel -- Suicidal behavior KW - ARMED Forces KW - SUICIDE -- Risk factors KW - SUICIDE KW - PREVENTION KW - UNITED States N1 - Accession Number: 70456541; Mastroianni, George R. 1 Scott, Wilbur J. 1; Affiliation: 1: Professors, Department of Behavioral Sciences & Leadership, US Air Force Academy in Colorado Springs; Source Info: Summer2011, Vol. 41 Issue 2, p6; Subject Term: MILITARY personnel -- Suicidal behavior; Subject Term: ARMED Forces; Subject Term: SUICIDE -- Risk factors; Subject Term: SUICIDE; Subject Term: PREVENTION; Subject Term: UNITED States; NAICS/Industry Codes: 928110 National Security; Number of Pages: 16p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70456541&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - ESTIS, JULIE M. AU - PARISI, JULIE A. AU - MOORE, ROBERT E. AU - BRUNGART, DOUGLAS S. T1 - SPEECH INTELLIGIBILITY DIFFERENCES ACROSS SOUND CLASSES WITH IN-THE-EAR AND FREE-FIELD MICROPHONES IN QUIET. JO - Perceptual & Motor Skills JF - Perceptual & Motor Skills Y1 - 2011/06// VL - 112 IS - 3 M3 - Article SP - 845 EP - 859 SN - 00315125 AB - Speech intelligibility performance with an in-the-ear microphone embedded in a custom-molded deep-insertion earplug was compared with results obtained using a free-field microphone. Intelligibility differences between microphones were further analyzed to assess whether reduced intelligibility was specific to certain sound classes. 36 participants completed the Modified Rhyme Test using recordings made with each microphone. While speech intelligibility for both microphones was highly accurate, intelligibility with the free-field microphone was significantly better than with the in-the-ear microphone. There were significant effects of place and manner of sound production. Significant differences in recognition among specific phonemes were also revealed. Implications included modifying the in-the-ear microphone to transmit more high frequency energy. Use of the in- the-ear microphone was limited by significant loss of high-frequency energy of the speech signal which resulted in reduced intelligibility for some sounds; however, the in-the-ear microphone is a promising technology for effective communication in military environments. [ABSTRACT FROM AUTHOR] AB - Copyright of Perceptual & Motor Skills is the property of Ammons Scientific, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANALYSIS of variance KW - COMMUNICATION KW - CORRELATION (Statistics) KW - NOISE KW - RELIABILITY (Personality trait) KW - SPEECH perception KW - TRANSDUCERS KW - MILITARY service KW - REPEATED measures design N1 - Accession Number: 64382971; ESTIS, JULIE M. 1; Email Address: jestis@usouthal.edu PARISI, JULIE A. 1 MOORE, ROBERT E. 1 BRUNGART, DOUGLAS S. 2; Affiliation: 1: Department of Speech Pathology and Audiology, University of South Alabama 2: Air Force Research Laboratory, Wright Patterson AFB, Ohio; Source Info: Jun2011, Vol. 112 Issue 3, p845; Subject Term: ANALYSIS of variance; Subject Term: COMMUNICATION; Subject Term: CORRELATION (Statistics); Subject Term: NOISE; Subject Term: RELIABILITY (Personality trait); Subject Term: SPEECH perception; Subject Term: TRANSDUCERS; Subject Term: MILITARY service; Subject Term: REPEATED measures design; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; Number of Pages: 15p; Illustrations: 3 Charts, 5 Graphs; Document Type: Article L3 - 10.2466/24.28.PMS.112.3.845-859 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=64382971&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sotnikov, V. I. AU - Mudaliar, S. AU - Genoni, T. C. AU - Rose, D. V. AU - Oliver, B. V. AU - Mehlhorn, T. A. T1 - Shear flow instability in a partially-ionized plasma sheath around a fast-moving vehicle. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2011/06// VL - 18 IS - 6 M3 - Article SP - 062104 PB - American Institute of Physics SN - 1070664X AB - The stability of ion acoustic waves in a sheared-flow, partially-ionized compressible plasma sheath around a fast-moving vehicle in the upper atmosphere, is described and evaluated for different flow profiles. In a compressible plasma with shear flow, instability occurs for any velocity profile, not just for profiles with an inflection point. A second-order differential equation for the electrostatic potential of excited ion acoustic waves in the presence of electron and ion collisions with neutrals is derived and solved numerically using a shooting method with boundary conditions appropriate for a finite thickness sheath in contact with the vehicle. We consider three different velocity flow profiles and find that in all cases that neutral collisions can completely suppress the instability. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHEAR flow KW - PLASMA instabilities KW - PLASMA sheaths KW - ION acoustic waves KW - POTENTIAL theory (Physics) KW - BOUNDARY value problems -- Numerical solutions KW - COLLISIONS (Nuclear physics) N1 - Accession Number: 62010275; Sotnikov, V. I. 1 Mudaliar, S. 1 Genoni, T. C. 2 Rose, D. V. 2 Oliver, B. V. 3 Mehlhorn, T. A. 4; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Hansom AFB, Massachusetts 01731, 2: Voss Scientific LLC, Albuquerque, New Mexico 87108, 3: Sandia National Laboratories, Albuquerque, New Mexico 87185, 4: Naval Research Laboratory, Washington, District of Columbia 20375,; Source Info: Jun2011, Vol. 18 Issue 6, p062104; Subject Term: SHEAR flow; Subject Term: PLASMA instabilities; Subject Term: PLASMA sheaths; Subject Term: ION acoustic waves; Subject Term: POTENTIAL theory (Physics); Subject Term: BOUNDARY value problems -- Numerical solutions; Subject Term: COLLISIONS (Nuclear physics); Number of Pages: 8p; Illustrations: 1 Diagram, 7 Graphs; Document Type: Article L3 - 10.1063/1.3596534 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62010275&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Im, Yunseok AU - Jang, Myoseon AU - Delcomyn, Carrie A. AU - Henley, Michael V. AU - Hearn, John D. T1 - The effects of active chlorine on photooxidation of 2-methyl-2-butene JO - Science of the Total Environment JF - Science of the Total Environment Y1 - 2011/06// VL - 409 IS - 13 M3 - Article SP - 2652 EP - 2661 SN - 00489697 AB - Abstract: Active chlorine comprising hypochlorite (OCl−), hypochlorous acid (HOCl) and chlorine (Cl2) is the active constituent in bleach formulations for a variety of industrial and consumer applications. However, the strong oxidative reactivity of active chlorine can cause adverse effects on both human health and the environment. In this study, aerosolized Oxone® [2KHSO5, KHSO4, K2SO4] with saline solution has been utilized to produce active chlorine (HOCl and Cl2). To investigate the impact of active chlorine on volatile organic compound (VOC) oxidation, 2-methyl-2-butene (MB) was photoirradiated in the presence of active chlorine using a 2-m3 Teflon film indoor chamber. The resulting carbonyl products produced from photooxidation of MB were derivatized with O-(2,3,4,5,6-pentafluorobenzyl) hydroxyamine hydrochloride (PFBHA) and analyzed using gas chromatograph–ion trap mass spectrometer (GC/ITMS). The photooxidation of MB in the presence of active chlorine was simulated with an explicit kinetic model using a chemical solver (Morpho) which included both Master Chemical Mechanism (MCM) and Cl radical reactions. The reaction rate constants of a Cl radical with MB and its oxidized products were estimated using a Structure–Reactivity Relationship method. Under dark conditions no effect of active chlorine on MB oxidation was apparent, whereas under simulated daylight conditions (UV irradiation) rapid MB oxidation was observed due to photo-dissociation of active chlorine. The model simulation agrees with chamber data showing rapid production of oxygenated products that are characterized using GC/ITMS. Ozone formation was enhanced when MB was oxidized in the presence of irradiated active chlorine and NO x . [Copyright &y& Elsevier] AB - Copyright of Science of the Total Environment is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHLORINE KW - OXIDATION KW - METHYL groups KW - BUTENE KW - HYPOCHLORITES KW - BLEACHING materials KW - IRRADIATION KW - GAS chromatography/Mass spectrometry (GC-MS) KW - OZONE KW - 2-Methyl-2-butene KW - Active chlorine KW - Explicit kinetic model KW - Ozone formation KW - Photooxidation KW - Structure–Reactivity Relationship N1 - Accession Number: 60519305; Im, Yunseok 1 Jang, Myoseon 1; Email Address: mjang@ufl.edu Delcomyn, Carrie A. 2 Henley, Michael V. 3 Hearn, John D. 2; Affiliation: 1: Department of Environmental Engineering Sciences, University of Florida, P.O. Box 116450, Gainesville, FL 32611, United States 2: Applied Research Associates, Inc., Tyndall AFB, FL, United States 3: Air Force Research Laboratory, Airbase Technologies Division, Tyndall AFB, FL, United States; Source Info: Jun2011, Vol. 409 Issue 13, p2652; Subject Term: CHLORINE; Subject Term: OXIDATION; Subject Term: METHYL groups; Subject Term: BUTENE; Subject Term: HYPOCHLORITES; Subject Term: BLEACHING materials; Subject Term: IRRADIATION; Subject Term: GAS chromatography/Mass spectrometry (GC-MS); Subject Term: OZONE; Author-Supplied Keyword: 2-Methyl-2-butene; Author-Supplied Keyword: Active chlorine; Author-Supplied Keyword: Explicit kinetic model; Author-Supplied Keyword: Ozone formation; Author-Supplied Keyword: Photooxidation; Author-Supplied Keyword: Structure–Reactivity Relationship; NAICS/Industry Codes: 325612 Polish and Other Sanitation Good Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 325181 Alkali and chlorine manufacturing; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.scitotenv.2011.03.038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60519305&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chang, Yih Chung AU - Xu, Hong AU - Xu, Yuntao AU - Lu, Zhou AU - Chiu, Yu-Hui AU - Levandier, Dale J. AU - Ng, C. Y. T1 - Communication: Rovibrationally selected study of the N2+(X; v+ = 1, N+ = 0-8) + Ar charge transfer reaction using the vacuum ultraviolet laser pulsed field ionization-photoion method. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2011/05/31/ VL - 134 IS - 20 M3 - Article SP - 201105 EP - 201105-4 PB - American Institute of Physics SN - 00219606 AB - By employing an electric field pulsing scheme for vacuum ultraviolet laser pulsed field ionization-photoion (PFI-PI) measurements, we have been able to prepare a rovibrationally selected PFI-PI beam of N2+(v+ = 1, N+) with not only high intensity and high quantum state purity, but also high kinetic energy resolution, allowing absolute total cross sections [σ(v+ = 1, N+)] for the N2+(X; v+ = 1, N+) + Ar, N+ = 0-8 charge transfer reaction to be measured at center-of-mass collision energies (Ecm) down to thermal energies. The σ(v+ = 1, N+ = 0-8) values determined at Ecm = 0.04-10.00 eV are in good agreement with the theoretical predictions based on the Landau-Zener-Stückelberg formulism. Taking into account the experimental uncertainties, the σ(v+ = 1, N+), N+ = 0-8, measured at Ecm = 1.56 eV are found to be independent of N+. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHARGE transfer KW - FAR ultraviolet radiation KW - ARGON KW - IONIZATION (Atomic physics) KW - PHOTOIONIZATION KW - ELECTRIC fields KW - QUANTUM theory KW - CHEMICAL kinetics N1 - Accession Number: 74465953; Chang, Yih Chung 1 Xu, Hong 1 Xu, Yuntao 1 Lu, Zhou 1 Chiu, Yu-Hui 2 Levandier, Dale J. 2 Ng, C. Y. 1; Affiliation: 1: Department of Chemistry, University of California, Davis, California 95616, 2: Air Force Research Laboratory, SpaceVehicle Directorate, Hanscom AFB, Massachusetts 01731-3010,; Source Info: 5/31/2011, Vol. 134 Issue 20, p201105; Subject Term: CHARGE transfer; Subject Term: FAR ultraviolet radiation; Subject Term: ARGON; Subject Term: IONIZATION (Atomic physics); Subject Term: PHOTOIONIZATION; Subject Term: ELECTRIC fields; Subject Term: QUANTUM theory; Subject Term: CHEMICAL kinetics; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.3596748 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74465953&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Burt, Jonathan M. AU - Boyd, Iain D. T1 - A Global Convergence Criterion for Steady State DSMC Simulations. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2011/05/20/ VL - 1333 IS - 1 M3 - Article SP - 230 EP - 235 PB - American Institute of Physics SN - 0094243X AB - A new global convergence criterion is presented to identify transient characteristics during the startup period of a steady state direct simulation Monte Carlo (DSMC) simulation. Unlike deterministic computational fluid dynamics (CFD) schemes, DSMC is generally subject to large statistical scatter in instantaneous flow property evaluations, which prevents the use of residual tracking procedures as are often employed in CFD simulations. However, reliable prediction of the time to reach steady state is necessary for initialization of DSMC sampling operations. Techniques currently used in DSMC to identify steady state convergence have several limitations, and are usually insensitive to weak transient behavior in small regions of relatively low density or recirculating flow. The proposed convergence criterion is developed with the goal of properly identifying such weak transient behavior, while adding negligible computational expense and allowing simple implementation in any existing DSMC code. Benefits of the proposed technique over existing convergence detection methods are demonstrated for representative nozzle/plume expansion flow, and application to other types of flows is discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONTE Carlo method KW - SIMULATION methods & models KW - STOCHASTIC convergence KW - COMPUTATIONAL fluid dynamics KW - NOZZLES KW - FLUID dynamics KW - PLUMES (Fluid dynamics) KW - UNSTEADY flow (Fluid dynamics) N1 - Accession Number: 60770440; Burt, Jonathan M. 1 Boyd, Iain D. 2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 4543, USA 2: Department of Aerospace Engineering, University of Michigan, Ann Arbor, MI 48109, USA; Source Info: 5/20/2011, Vol. 1333 Issue 1, p230; Subject Term: MONTE Carlo method; Subject Term: SIMULATION methods & models; Subject Term: STOCHASTIC convergence; Subject Term: COMPUTATIONAL fluid dynamics; Subject Term: NOZZLES; Subject Term: FLUID dynamics; Subject Term: PLUMES (Fluid dynamics); Subject Term: UNSTEADY flow (Fluid dynamics); Number of Pages: 6p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.3562653 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60770440&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Josyula, Eswar AU - Vedula, Prakash AU - Bailey, William F. AU - Suchyta, Casimir J. T1 - Kinetic Solution of the Structure of a Shock Wave in a Non-Reactive Gas Mixture. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2011/05/20/ VL - 1333 IS - 1 M3 - Article SP - 910 EP - 915 PB - American Institute of Physics SN - 0094243X AB - The multi-species Boltzmann equation is numerically integrated to characterize the internal structure of a Mach 3 shock wave in a hard sphere gas. The collision integral is evaluated by the conservative discrete ordinate method of Tcheremissine [1]. There was excellent agreement of macroscopic variables with those of Kosuge, Aoki, and Takata. [2] The effect of species concentration and mass ratio on the behavior of macroscopic variables and distribution functions in the structure of the shock wave is considered for both two and three-species gas mixtures. In a binary mixture of gases with different masses and varying concentrations, the temperature overshoot of the parallel component of temperature near the center of the shock wave is highest for the heavy component when the concentration of the heavy component is the smallest. A physical basis for the temperature overshoot is put forth. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHOCK waves KW - KINETIC theory of gases KW - MIXTURES KW - GASES KW - TRANSPORT theory (Mathematics) KW - COLLISION integrals KW - DISTRIBUTION (Probability theory) N1 - Accession Number: 60770323; Josyula, Eswar 1 Vedula, Prakash 2 Bailey, William F. 3 Suchyta, Casimir J. 4; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio, USA 2: University of Oklahoma, Norman, Oklahoma, USA 3: Air Force Institute of Technology, Wright-Patterson AFB, Ohio, USA 4: Ohio Aerospace Institute, Ohio, USA; Source Info: 5/20/2011, Vol. 1333 Issue 1, p910; Subject Term: SHOCK waves; Subject Term: KINETIC theory of gases; Subject Term: MIXTURES; Subject Term: GASES; Subject Term: TRANSPORT theory (Mathematics); Subject Term: COLLISION integrals; Subject Term: DISTRIBUTION (Probability theory); Number of Pages: 6p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1063/1.3562761 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60770323&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dressler, Rainer A. AU - Chiu, Yu-hui T1 - Quantifying Plasma Collision Processes in Xenon Powered Electric Propulsion Systems. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2011/05/20/ VL - 1333 IS - 1 M3 - Article SP - 1065 EP - 1072 PB - American Institute of Physics SN - 0094243X AB - The use of xenon plasma electrostatic space propulsion systems for low-thrust applications is growing rapidly due to the significant propellant mass savings associated with the high specific impulse of the engines. The high expense of the propellant drives the cost of ground-based testing, which lacks many attributes of in-space conditions. The cost-effective performance and integration optimization of these propulsion systems, consequently, is highly dependent on models that correctly render the static plasma properties and its outflow from the engine at arbitrary conditions. A primary impediment to the accuracy of models is quantitative data such as energy dependent cross sections for a multitude of collision processes that govern the plasma properties. We present a review of theoretical and experimental advances in determining vital cross sections and their implementation in models of electrostatic thruster plasmas. Experimentally validated theoretical charge exchange and xenon ion differential scattering cross sections have led to improved modeling of the angular distribution of Hall Effect thruster plume ion currents. New cross sections for inelastic electron and xenon ion scattering on xenon atoms, including atoms in the 5p56s J = 2 metastable state, have led to the development of a collisional radiative model that predicts local electron temperatures from near-infrared spectral intensities. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE flight propulsion systems KW - PLASMA (Ionized gases) KW - XENON KW - COLLISIONS (Physics) KW - ELECTROSTATICS KW - TESTING KW - PERFORMANCE evaluation KW - PLUMES (Fluid dynamics) N1 - Accession Number: 60770512; Dressler, Rainer A. 1 Chiu, Yu-hui 2; Affiliation: 1: Spectral Sciences, Inc., 4 Fourth Ave, Burlington, MA 01803-3304 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA 01731-3010; Source Info: 5/20/2011, Vol. 1333 Issue 1, p1065; Subject Term: SPACE flight propulsion systems; Subject Term: PLASMA (Ionized gases); Subject Term: XENON; Subject Term: COLLISIONS (Physics); Subject Term: ELECTROSTATICS; Subject Term: TESTING; Subject Term: PERFORMANCE evaluation; Subject Term: PLUMES (Fluid dynamics); NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing; Number of Pages: 8p; Illustrations: 1 Diagram, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.3562786 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60770512&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Joslyn, Thomas B. AU - Ketsdever, Andrew D. T1 - Droplet Charging Effects in the Space Environment. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2011/05/20/ VL - 1333 IS - 1 M3 - Article SP - 1079 EP - 1084 PB - American Institute of Physics SN - 0094243X AB - Several applications exist for transiting liquid droplets through the near-Earth space environment. Numerical results are presented for the charging of liquid droplets of trimethyl pentaphenyl siloxane (DC705) in three different plasma environments: ionosphere, auroral, and geosynchronous Earth orbit (GEO). Nominal and high geomagnetic activity cases are investigated. In general, high levels of droplet charging (>100 V) exist only in GEO during periods of high geomagnetic or solar activity. An experiment was conducted to assess the charging of silicon-oil droplets due to photoemission. The photoemission yield in the 120-200 nm wavelength range was found to be approximately 0.06. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE environment KW - DROPS KW - NUMERICAL analysis KW - SILOXANES KW - PLASMA (Ionized gases) KW - GEOMAGNETISM KW - PHOTOEMISSION KW - WAVELENGTHS KW - PHYSICS experiments N1 - Accession Number: 60770510; Joslyn, Thomas B. 1 Ketsdever, Andrew D. 2; Affiliation: 1: United States Air Force Academy, Department of Astronautics, USAF Academy, CO 80840 2: University of Colorado at Colorado Springs, Department of Mechanical and Aerospace Engineering, Colorado, Springs, CO 80918; Source Info: 5/20/2011, Vol. 1333 Issue 1, p1079; Subject Term: SPACE environment; Subject Term: DROPS; Subject Term: NUMERICAL analysis; Subject Term: SILOXANES; Subject Term: PLASMA (Ionized gases); Subject Term: GEOMAGNETISM; Subject Term: PHOTOEMISSION; Subject Term: WAVELENGTHS; Subject Term: PHYSICS experiments; Number of Pages: 6p; Illustrations: 2 Diagrams, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.3562788 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60770510&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Scharfe, Michelle K. AU - Koo, Justin AU - Azarnia, Gregory T1 - DSMC Implementation of Experimentally-Based Xe++Xe Differential Cross Sections for Electric Propulsion Modeling. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2011/05/20/ VL - 1333 IS - 1 M3 - Article SP - 1085 EP - 1090 PB - American Institute of Physics SN - 0094243X AB - Published differential cross section data for heavy particle collisions between xenon ions and neutral xenon has been incorporated into plasma simulations for electric propulsion modeling. A fit has been made to the published data in order to estimate the relative contribution from charge exchange and elastic collisions and to reduce the computational cost of utilizing the differential cross section in existing numerical models. Since the published profiles do not include scattering data near 0 degrees, the differential cross section was assumed to be constant at low angles. The angle at which the differential cross section was assumed to transition from the constant profile to the fit was chosen such that the differential cross section integrated to the published total cross section value for xenon scattering. In order to make the resulting differential scattering curve generally applicable to other types of collisions with dissimilar collision partners, the profile was converted from the laboratory frame into center of mass coordinates. Each time a scattering event was determined to take place in the electric propulsion modeling codes, a scattering angle of the incident particle was chosen using a cumulative distribution function. The behavior of the target particle was determined using conservation of energy and momentum. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - XENON KW - ELECTRIC propulsion KW - CROSS-sectional method KW - SIMULATION methods & models KW - MONTE Carlo method KW - PHYSICS experiments KW - PLASMA (Ionized gases) KW - COLLISIONS (Physics) N1 - Accession Number: 60770509; Scharfe, Michelle K. 1 Koo, Justin 2 Azarnia, Gregory 1; Affiliation: 1: ERC, Incorporated, Edwards AFB, CA 93524 2: Air Force Research Laboratory, Edwards AFB, CA, 93524; Source Info: 5/20/2011, Vol. 1333 Issue 1, p1085; Subject Term: XENON; Subject Term: ELECTRIC propulsion; Subject Term: CROSS-sectional method; Subject Term: SIMULATION methods & models; Subject Term: MONTE Carlo method; Subject Term: PHYSICS experiments; Subject Term: PLASMA (Ionized gases); Subject Term: COLLISIONS (Physics); Number of Pages: 6p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.3562789 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60770509&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vedula, Prakash AU - Josyula, Eswar T1 - Numerical Simulation of Hypersonic Blunt Body and Nozzle Flows using Master Equation. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2011/05/20/ VL - 1333 IS - 1 M3 - Article SP - 1263 EP - 1268 PB - American Institute of Physics SN - 0094243X AB - Numerical simulations of hypersonic flow past blunt body and expanding nozzles were conducted using an operator splitting approach for coupling the master equation consisting of state-to-state kinetics with the fluid dynamic equations. The vibrational-translational (V-T) and vibrational-vibrational (V-V) energy transfer processes were included in the master equation. The resulting stiff system of equations were solved satisfactorily with the operator splitting approach. Separate nozzle simulations were performed with pure nitrogen and pure oxygen in the temperature ranges of 5000 K-6000 K and 2200 K-3500 K, respectively. Highly nonequilibrium (i.e. non-Boltzmann) distributions were predicted at the nozzle exit for the selected range of temperatures. The contribution of vibrational-vibrational (V-V) transition rates to the overall vibrational relaxation process was found to be higher at the lower nozzle throat temperatures. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERSONIC aerodynamics KW - NOZZLES KW - FLUID dynamics KW - NUMERICAL analysis KW - SIMULATION methods & models KW - ENERGY transfer KW - EQUATIONS -- Numerical solutions KW - NITROGEN N1 - Accession Number: 60770478; Vedula, Prakash 1 Josyula, Eswar 2; Affiliation: 1: School of Aerospace and Mechanical Engineering, University of Oklahoma, Norman, Oklahoma, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio, USA; Source Info: 5/20/2011, Vol. 1333 Issue 1, p1263; Subject Term: HYPERSONIC aerodynamics; Subject Term: NOZZLES; Subject Term: FLUID dynamics; Subject Term: NUMERICAL analysis; Subject Term: SIMULATION methods & models; Subject Term: ENERGY transfer; Subject Term: EQUATIONS -- Numerical solutions; Subject Term: NITROGEN; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 6p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.3562817 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60770478&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O.N. AU - Scott, J.M. AU - Senkova, S.V. AU - Miracle, D.B. AU - Woodward, C.F. T1 - Microstructure and room temperature properties of a high-entropy TaNbHfZrTi alloy JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2011/05/19/ VL - 509 IS - 20 M3 - Article SP - 6043 EP - 6048 SN - 09258388 AB - Abstract: A new refractory alloy, Ta20Nb20Hf20Zr20Ti20, produced by vacuum arc-melting followed by hot isostatic pressing (HIPing) at T =1473K and P =207MPa for 3h has predominantly a single-phase body-centered cubic (BCC) structure with the lattice parameter a =340.4pm. The alloy density and Vickers microhardness are ρ =9.94g/cm3 and H v =3826MPa. The alloy has high compression yield strength (σ 0.2 =929MPa) and ductility (ɛ >50%). The alloy shows considerable strain hardening and homogeneous deformation. A simple model of solid-solution strengthening is proposed to explain the behavior. [Copyright &y& Elsevier] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - TEMPERATURE effect KW - ENTROPY KW - TANTALUM alloys KW - VACUUM arcs KW - SOLUTION strengthening KW - CRYSTALLOGRAPHY KW - METALS -- Mechanical properties KW - MICROHARDNESS KW - Alloy design KW - Crystallography KW - Mechanical properties KW - Microstructure N1 - Accession Number: 60079492; Senkov, O.N. 1,2; Email Address: oleg.senkov@wpafb.af.mil Scott, J.M. 1,2 Senkova, S.V. 1,2 Miracle, D.B. 1 Woodward, C.F. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, OH 45433, USA 2: UES, Inc., Dayton, OH 45432, USA; Source Info: May2011, Vol. 509 Issue 20, p6043; Subject Term: MICROSTRUCTURE; Subject Term: TEMPERATURE effect; Subject Term: ENTROPY; Subject Term: TANTALUM alloys; Subject Term: VACUUM arcs; Subject Term: SOLUTION strengthening; Subject Term: CRYSTALLOGRAPHY; Subject Term: METALS -- Mechanical properties; Subject Term: MICROHARDNESS; Author-Supplied Keyword: Alloy design; Author-Supplied Keyword: Crystallography; Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Microstructure; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jallcom.2011.02.171 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60079492&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Park, Jeongho AU - Mitchel, W. C. AU - Brown, Gail J. AU - Elhamri, Said AU - Grazulis, Lawrence AU - Smith, Howard E. AU - Pacley, Shanee D. AU - Boeckl, John J. AU - Eyink, Kurt G. AU - Mou, Shin AU - Tomich, David H. AU - Hoelscher, John E. T1 - Band gap formation in graphene by in-situ doping. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2011/05/16/ VL - 98 IS - 20 M3 - Article SP - 203102 PB - American Institute of Physics SN - 00036951 AB - We report the formation of band gaps in as-grown stacks of epitaxial graphene with opposite doping. Control of in-situ doping during carbon source molecular beam epitaxy growth on SiC was achieved by using different carbon sources. Doping heterostructures were grown by stacking n-type material from a C60 source on p-type material from a graphite filament source. Activation energies for the resistivity and carrier concentration indicated band gaps up to 200 meV. A photoconductivity threshold was observed in the range of the electrical activation energies. Band gap formation is attributed to electric fields induced by spatially separated ionized dopants of opposite charge. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPHENE KW - MOLECULAR beams KW - POLYCYCLIC aromatic hydrocarbons KW - MOLECULAR dynamics KW - ELECTRIC conductivity KW - ELECTRIC fields N1 - Accession Number: 60730528; Park, Jeongho 1; Email Address: jeongho.park@wpafb.af.mil Mitchel, W. C. 1 Brown, Gail J. 1 Elhamri, Said 2 Grazulis, Lawrence 1 Smith, Howard E. 1 Pacley, Shanee D. 1 Boeckl, John J. 1 Eyink, Kurt G. 1 Mou, Shin 1 Tomich, David H. 1 Hoelscher, John E. 1; Affiliation: 1: Air Force Research Laboratory-Materials and Manufacturing Directorate (AFRL/RXPS), Wright-Patterson AFB, Ohio 45433-7707, USA 2: Department of Physics, University of Dayton, Dayton, Ohio 45469, USA; Source Info: 5/16/2011, Vol. 98 Issue 20, p203102; Subject Term: GRAPHENE; Subject Term: MOLECULAR beams; Subject Term: POLYCYCLIC aromatic hydrocarbons; Subject Term: MOLECULAR dynamics; Subject Term: ELECTRIC conductivity; Subject Term: ELECTRIC fields; Number of Pages: 3p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.3589364 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60730528&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ramsuran, Veron AU - Kulkarni, Hemant AU - He, Weijing AU - Mlisana, Koleka AU - Wright, Edwina J. AU - Werner, Lise AU - Castiblanco, John AU - Dhanda, Rahul AU - Le, Tuan AU - Dolan, Matthew J. AU - Guan, Weihua AU - Weiss, Robin A. AU - Clark, Robert A. AU - Abdool Karim, Salim S. AU - Ahuja, Sunil K. AU - Ndung'u, Thumbi T1 - Duffy-Null–Associated Low Neutrophil Counts Influence HIV-1 Susceptibility in High-Risk South African Black Women. JO - Clinical Infectious Diseases JF - Clinical Infectious Diseases Y1 - 2011/05/15/ VL - 52 IS - 10 M3 - Article SP - 1248 EP - 1256 SN - 10584838 AB - The Duffy-null trait and ethnic neutropenia are highly prevalent in Africa. The authors found that the trait of Duffy-null–associated low neutrophil counts associated with increased HIV-1 susceptibility. The possible contribution of this trait to the high prevalence of HIV-1 in Africa requires further investigationBackground. The Duffy-null trait and ethnic netropenia are both highly prevalent in Africa. The influence of pre-seroconversion levels of peripheral blood cell counts (PBCs) on the risk of acquiring human immunodeficiency virus (HIV)–1 infection among Africans is unknown.Methods. The triangular relationship among pre-seroconversion PBC counts, host genotypes, and risk of HIV acquisition was determined in a prospective cohort of black South African high-risk female sex workers. Twenty-seven women had seroconversion during follow-up, and 115 remained HIV negative for 2 years, despite engaging in high-risk activity.Results. Pre-seroconversion neutrophil counts in women who subsequently had seroconversion were significantly lower, whereas platelet counts were higher, compared with those who remained HIV negative. Comprising 27% of the cohort, subjects with pre-seroconversion neutrophil counts of <2500 cells/mm3 had a ∼3-fold greater risk of acquiring HIV infection. In a genome-wide association analyses, an African-specific polymorphism (rs2814778) in the promoter of Duffy Antigen Receptor for Chemokines (DARC −46T > C) was significantly associated with neutrophil counts (P = 7.9 × 10−11). DARC −46C/C results in loss of DARC expression on erthyrocytes (Duffy-null) and resistance to Plasmodium vivax malaria, and in our cohort, only subjects with this genotype had pre-seroconversion neutrophil counts of <2500 cells/mm3. The risk of acquiring HIV infection was ∼3-fold greater in those with the trait of Duffy-null–associated low neutrophil counts, compared with all other study participants.Conclusions. Pre-seroconversion neutrophil and platelet counts influence risk of HIV infection. The trait of Duffy-null–associated low neutrophil counts influences HIV susceptibility. Because of the high prevalence of this trait among persons of African ancestry, it may contribute to the dynamics of the HIV epidemic in Africa. [ABSTRACT FROM AUTHOR] AB - Copyright of Clinical Infectious Diseases is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BLOOD cell count KW - HIV-positive persons KW - BLACK women KW - DISEASE prevalence KW - GENETIC polymorphisms KW - SOUTH Africa N1 - Accession Number: 78118581; Ramsuran, Veron 1,2,3,4 Kulkarni, Hemant 3,4 He, Weijing 3,4 Mlisana, Koleka 2 Wright, Edwina J. 5 Werner, Lise 2 Castiblanco, John 3,4 Dhanda, Rahul 3,4 Le, Tuan 3,4 Dolan, Matthew J. 6 Guan, Weihua 7 Weiss, Robin A. 8 Clark, Robert A. 3,4 Abdool Karim, Salim S. 2 Ahuja, Sunil K. 3,4 Ndung'u, Thumbi 1,2; Affiliation: 1: HIV Pathogenesis Programme 2: Centre for the AIDS Program of Research in South Africa (CAPRISA), Doris Duke Medical Research Institute, Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa 3: Veterans Administration Research Center for AIDS and HIV-1 Infection, and Center for Personalized Medicine, South Texas Veterans Health Care System 4: Department of Medicine, University of Texas Health Science Center, San Antonio 5: The Alfred Hospital, Melbourne, Victoria, Australia, The Burnet Institute, Melbourne, Victoria, Australia, and Departments of Medicine, Nursing Health Sciences, Monash University, Clayton, Victoria Australia 6: Henry M. Jackson Foundation, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas 7: Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, Minnesota 8: Medical Research Council Centre for Medical Molecular Virology, Division of Infection and Immunity, University College London, London, United Kingdom; Source Info: May2011, Vol. 52 Issue 10, p1248; Subject Term: BLOOD cell count; Subject Term: HIV-positive persons; Subject Term: BLACK women; Subject Term: DISEASE prevalence; Subject Term: GENETIC polymorphisms; Subject Term: SOUTH Africa; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=78118581&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hsu, Paul S. AU - Welch, George R. AU - Gord, James R. AU - Patnaik, Anil K. T1 - Propagation dynamics of controlled cross-talk via interplay between χ(1) and χ(3) processes. JO - Physical Review A: Atomic, Molecular & Optical Physics JF - Physical Review A: Atomic, Molecular & Optical Physics Y1 - 2011/05/15/ VL - 83 IS - 5-B M3 - Article SP - 53819:1 EP - 53819:8 SN - 10502947 AB - We investigate theoretically and experimentally the propagation dynamics of a nonlinear cross-talk effect between two probe channels in a double-ladder system and show that an interplay between χ(1) and χ(3) processes leads to the control of cross-talk. We derive analytical solutions to describe the propagation dynamics of the probe fields with the cross-talk effect built in. From the analytical results we identify and examine the regimes of interest where contributions of either χ(1) or χ(3) or both are significant. The control of cross-talk is demonstrated experimentally, and good quantitative agreement is found between the analytical solutions and the experiment. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELASTIC wave propagation KW - CROSSTALK KW - PROBES (Electronic instruments) KW - STOCHASTIC processes KW - QUANTITATIVE research N1 - Accession Number: 66776391; Hsu, Paul S. 1,2; Email Address: paul.hsu@wpafb.af.mil Welch, George R. 2 Gord, James R. 3 Patnaik, Anil K. 3,4; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, Ohio 45431, USA 2: Institute for Quantum Studies and Department of Physics, Texas A&M University, College Station, Texas 77843, USA 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, Ohio 45433, USA 4: Department of Physics, Wright State University, Dayton, Ohio 45435, USA; Source Info: May2011, Vol. 83 Issue 5-B, p53819:1; Subject Term: ELASTIC wave propagation; Subject Term: CROSSTALK; Subject Term: PROBES (Electronic instruments); Subject Term: STOCHASTIC processes; Subject Term: QUANTITATIVE research; Number of Pages: 8p; Document Type: Article L3 - 10.1103/PhysRevA.83.053819 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66776391&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jonghoon Lee AU - Roy, Ajit K. AU - Farmer, Barry L. T1 - Kapitza resistance in the lattice Boltzmann-Peierls-Callaway equation for multiphase phonon gases. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2011/05/15/ VL - 83 IS - 5-2 M3 - Article SP - 56706.1 EP - 56706.11 SN - 15393755 AB - The interface thermal resistance becomes more and more important as device miniaturization for better performance renders a large surface-to-volume ratio and invariably requires a device design with multiple materials inducing thermal interfaces across the material heterogeniety. Toward developing a comprehensive computational methodology for thermal transport prediction, incorporating the interface effects in a heterogeneous medium, a novel boundary collision rule is devised in the lattice Boltzmann computational scheme to realize a thermal interlace between phonon gases with dissimilar dispersion relations. Consistent with the Callaway collision operator for Umklapp process, the interface phonon collision process is regarded as a linear relaxation mechanism toward the local pseudo-equilibrium phonon distribution, which is uniquely defined by the energy conservation principle. The Kapitza length and the interface thermal resistance are determined by the relaxation parameter and the local phonon properties. The implementation of the proposed mesoscopic boundary collision rule in the lattice Boltzmann computational framework provides a methodology of predicting the thermal properties of a heterogeneus medium incorporating both normal and Umklapp collision processes of phonon. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LATTICE Boltzmann methods KW - LATTICE theory KW - MULTIPHASE flow KW - PHONONS KW - MINIATURE electronic equipment N1 - Accession Number: 67141228; Jonghoon Lee 1,2; Email Address: jonghoon.lee@wpafb.af.mil Roy, Ajit K. 1 Farmer, Barry L. 1; Affiliation: 1: Thermal Sciences and Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, USA 2: Universal Technology corporation, 1270 N. Fairfield Rd., Dayton, Ohio 45432, USA; Source Info: May2011, Vol. 83 Issue 5-2, p56706.1; Subject Term: LATTICE Boltzmann methods; Subject Term: LATTICE theory; Subject Term: MULTIPHASE flow; Subject Term: PHONONS; Subject Term: MINIATURE electronic equipment; Number of Pages: 11p; Document Type: Article L3 - 10.1103/PhysRevE.83.056706 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67141228&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Koh, Christine I. AU - Liu, Chen-Lin AU - Harmon, Christopher W. AU - Strasser, Daniel AU - Golan, Amir AU - Kostko, Oleg AU - Chambreau, Steven D. AU - Vaghjiani, Ghanshyam L. AU - Leone, Stephen R. T1 - Soft lonization of Thermally Evaporated Hypergolic Ionic Liquid Aerosols. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2011/05/12/ VL - 115 IS - 18 M3 - Article SP - 4630 EP - 4635 SN - 10895639 AB - Isolated ion pairs of a conventional tonic liquid, l-Ethyl-3- Methyl-Imidazolium Bis(trifluoromethylsulfonyl)imide ([Emim+]- [Tf2N–]), and a reactive hypergolic ionic liquid, 1-Butyl-3-Methyl- Imidazolium Dicyanamide ([Bmim+][Dca–]), are generated by vaporizing ionic liquid submicrometer aerosol particles for the first time; the vaporized species are investigated by dissociative ionization with tunable vacuum ultraviolet (VUV) light, exhibiting dear intact cations, Emim+ and Bmim+, presumably originating from intact ion pairs. Mass spectra of ion pair vapor from an effusive source of the hypergolic ionic liquid show substantial reactive decomposition due to the internal energy of the molecules emanating from the source. Photoionization efficiency curves in the near threshold ionization region of isolated ion pairs of [Emim+][Tf2N– ] ionic liquid vapor are compared for an aerosol source and an effusive source, revealing changes in the appearance energy due to the amount of internal energy in the ion pairs. The aerosol source has a shift to higher threshold energy (~0.3 eV), attributed to reduced internal energy of the isolated ion pairs. The method of ionic liquid submicrometer aerosol particle vaporization, for reactive ionic liquids such as hypergolic species, is a convenient, thermally "cooler" source of isolated intact ion pairs in the gas phase compared to effusive sources. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONIC liquids KW - PARTICLES KW - FAR ultraviolet radiation KW - MOLECULES KW - PHOTOIONIZATION N1 - Accession Number: 67052815; Koh, Christine I. 1 Liu, Chen-Lin 1 Harmon, Christopher W. 1 Strasser, Daniel 1 Golan, Amir 1 Kostko, Oleg 1 Chambreau, Steven D. 2 Vaghjiani, Ghanshyam L. Leone, Stephen R. 1; Email Address: srl@berkeley.edu; Affiliation: 1: Departments of Chemistry and Physics, University of California, Berkeley, California 94720, United States 2: ERC, Incorporated and Air Force Research Laboratory, Edwards Air Force Base, California 93S24, United States; Source Info: May2011, Vol. 115 Issue 18, p4630; Subject Term: IONIC liquids; Subject Term: PARTICLES; Subject Term: FAR ultraviolet radiation; Subject Term: MOLECULES; Subject Term: PHOTOIONIZATION; Number of Pages: 6p; Document Type: Article L3 - 10.1021/jp200633b UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67052815&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rebane, Aleksander AU - Drobizhev, Mikhail AU - Makarov, Nikolay S. AU - Beurman, Erich AU - Haley, Joy E. AU - Krein, Douglas M. AU - Burke, Aaron R. AU - Flikkema, Jonathan L. AU - Cooper, Thomas M. T1 - Relation between Two-Photon Absorption and Dipolar Properties in a Series of Fluorenyl-Based Chromophores with Electron Donating or Electron Withdrawing Substituents. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2011/05/05/ VL - 115 IS - 17 M3 - Article SP - 4255 EP - 4262 SN - 10895639 AB - We investigate two-photon absorption (2PA) in a series of fluorenyl-based 9,9-diethyl-2-ethynyl-7-((4-R- phenyl)ethynyl)-9,9a-dihydro-4a.H-fluorene chromophores with R being various electron donating (ED) and electron withdrawing (EW) groups. We use wavelength-tunable femtosecond laser pulses to measure the 2PA cross sections in thelowest dipole-allowed transition and show that the substituents with stronger ED or EW character enhance the peak 2PA cross section (up to σ2 ˜ 60-80 GM) while the neutral substituents lead to smaller cross sections, σ2 < 10 GM. We apply two-level approximation to establish a quantitative relation between the 2PA in the pure electronic transition (0-0) and the corresponding change of the permanent electric dipole moment upon the excitation (Δμ). This relation is elucidated by comparing Δμ values obtained from the 2PA measurements with quantum-chemical calculations and with measurements of solvatochromic shifts in a series of solvents. We show that the calculated Δμ correlate well with the values obtained from the 2PA spectroscopy. The Δμ values obtained from the solvatochromic shifts agree well with the above two methods for the chromophores with neutral or weak EW or ED substituents. On the other hand, stronger EW or ED end groups give much larger Stokes shifts, which lead to an overestimation of the Δμ values. We tentatively attribute this effect to the excitation-induced electronic density change occurring predominantly at the substituent side ofthe molecule, which causes the effective point dipole associated with the Δμ to interact more strongly with the surrounding solvent. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TWO-photon absorbing materials KW - CHROMOPHORES KW - DIPOLE moments KW - ELECTRON donor-acceptor complexes KW - STOKES equations N1 - Accession Number: 66841249; Rebane, Aleksander 1; Email Address: A.R.,rebane@physics.montana.edu Drobizhev, Mikhail 2 Makarov, Nikolay S. 2 Beurman, Erich 2 Haley, Joy E. 3 Krein, Douglas M. 3,4 Burke, Aaron R. 3,4 Flikkema, Jonathan L. 3 Cooper, Thomas M. 3; Email Address: Cooper@wpfb.af.mil; Affiliation: 1: National Institute of Chemical Physics and Biophysics, Tallinn, 12618 Estonia 2: Physics Department, Montana State University, Bozeman, Montana 59717, United States 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, United States 4: General Dynamics Information Technology, Dayton, Ohio 45431, United States; Source Info: May2011, Vol. 115 Issue 17, p4255; Subject Term: TWO-photon absorbing materials; Subject Term: CHROMOPHORES; Subject Term: DIPOLE moments; Subject Term: ELECTRON donor-acceptor complexes; Subject Term: STOKES equations; Number of Pages: 8p; Document Type: Article L3 - 10.1021/jp200129b UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66841249&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Szmulowicz, F. AU - Brown, G. J. T1 - Calculation of the vertical and horizontal electron mobilities in InAs/GaSb superlattices. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2011/05/02/ VL - 98 IS - 18 M3 - Article SP - 182105 PB - American Institute of Physics SN - 00036951 AB - Efficient perpendicular transport of carriers by drift and diffusion in InAs/GaSb superlattice-based devices is necessary for achieving high device figures of merit. However, the values of perpendicular mobilities are usually inferred indirectly or through nonstandard experiments. Treating perpendicular and transverse mobilities on equal footing, we present here the results of a calculation of low-temperature perpendicular and transverse electron mobilities in InAs/GaSb superlattices as limited by interface-roughness scattering. Using the calculated mobility curves, it is possible to infer the value of the vertical mobility from measurements of the horizontal mobility. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - INDIUM arsenide KW - GALLIUM alloys KW - MATERIALS science KW - PHYSICS N1 - Accession Number: 60456319; Szmulowicz, F. 1; Email Address: frank.szmulowicz.ctr@wpafb.af.mil Brown, G. J. 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469-0072, 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433-7707,; Source Info: 5/2/2011, Vol. 98 Issue 18, p182105; Subject Term: SUPERLATTICES; Subject Term: INDIUM arsenide; Subject Term: GALLIUM alloys; Subject Term: MATERIALS science; Subject Term: PHYSICS; Number of Pages: 3p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.3584865 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60456319&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhupanska, Olesya AU - Sierakowski, Robert T1 - Electro-thermo-mechanical coupling in carbon fiber polymer matrix composites. JO - Acta Mechanica JF - Acta Mechanica Y1 - 2011/05// VL - 218 IS - 3/4 M3 - Article SP - 319 EP - 332 PB - Springer Science & Business Media B.V. SN - 00015970 AB - Field coupling in electric-current-carrying composites is studied. Governing equations describing electromagnetic, thermal, and mechanical field interactions in anisotropic materials and a corresponding two-dimensional approximation for transversely isotropic plates are discussed. A problem of electric current-induced heating and the associated thermal stresses in the electrified carbon fiber polymer matrix composite plate is considered. A closed-form solution for the temperature distribution is obtained. It is shown that application of the electric current leads to a significant temperature gradient across the plate. This, in turn, results in a considerable rise of the in-plane compressive stresses in the direction transverse to the direction of the applied current. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Mechanica is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON fiber-reinforced plastics KW - POLYMERS KW - POLYMERIC composites KW - MATERIALS -- Electric properties KW - ELECTRIC currents KW - ELECTROMAGNETIC fields KW - MATERIALS -- Mechanical properties KW - THERMOPHYSICAL properties N1 - Accession Number: 60017512; Zhupanska, Olesya 1; Email Address: ozhupans@engineering.uiowa.edu Sierakowski, Robert 2; Affiliation: 1: University of Iowa, Iowa City USA 2: United States Air Force Academy, Colorado Springs USA; Source Info: May2011, Vol. 218 Issue 3/4, p319; Subject Term: CARBON fiber-reinforced plastics; Subject Term: POLYMERS; Subject Term: POLYMERIC composites; Subject Term: MATERIALS -- Electric properties; Subject Term: ELECTRIC currents; Subject Term: ELECTROMAGNETIC fields; Subject Term: MATERIALS -- Mechanical properties; Subject Term: THERMOPHYSICAL properties; Number of Pages: 14p; Illustrations: 1 Diagram, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1007/s00707-010-0427-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60017512&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Enright, Michael R. AU - Chan, Kwai S. AU - Moody, Jonathan R. AU - Golden, Patrick J. AU - Chandra, Ramesh AU - Pentz, Alan C. T1 - Influence of Random Residual Stress on Fretting Fatigue. JO - AIAA Journal JF - AIAA Journal Y1 - 2011/05// VL - 49 IS - 5 M3 - Article SP - 881 EP - 889 SN - 00011452 AB - Probabilistic risk assessment has increasingly been adopted by certification agencies to address the inherent uncertainties in fatigue crack nucleation and growth processes. Fretting fatigue is a significant damage source for aircraft gas turbine engine components. When present, it can reduce component lives by 40 to 60 percent or more. Surface treatments introduce compressive residual stresses that have the potential to substantially increase component lifetimes. In this paper, an approach is presented for estimating the fretting fatigue risk reduction associated with surface treatment of an actual military engine disk under real-life loading conditions. Residual stresses associated with surface treatment are based on values reported in the literature. A probabilistic model of the fretting process is calibrated based on available failure data and used to quantify the influence of surface treatment on the probability of fracture. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESIDUAL stresses KW - STRAINS & stresses (Mechanics) KW - FRETTING corrosion KW - DEFORMATIONS (Mechanics) KW - NUCLEATION KW - FRACTURE mechanics N1 - Accession Number: 61078972; Enright, Michael R. 1,2 Chan, Kwai S. 1 Moody, Jonathan R. 1,2 Golden, Patrick J. 3,4 Chandra, Ramesh 5 Pentz, Alan C. 5; Affiliation: 1: Southwest Research Institute, San Antonio, Texas 78238 2: Member AIAA 3: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 4543 4: Senior Member AIAA 5: NA VAIR, Patuxent River, Maryland 20670; Source Info: May2011, Vol. 49 Issue 5, p881; Subject Term: RESIDUAL stresses; Subject Term: STRAINS & stresses (Mechanics); Subject Term: FRETTING corrosion; Subject Term: DEFORMATIONS (Mechanics); Subject Term: NUCLEATION; Subject Term: FRACTURE mechanics; Number of Pages: 9p; Illustrations: 1 Black and White Photograph, 1 Chart, 18 Graphs; Document Type: Article L3 - 10.2514/1.45774 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61078972&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, Zhe AU - Tsou, Brian T1 - Task-based working memory guidance of visual attention. JO - Attention, Perception & Psychophysics JF - Attention, Perception & Psychophysics Y1 - 2011/05// VL - 73 IS - 4 M3 - Article SP - 1082 EP - 1095 SN - 19433921 AB - Previous research has established that holding a stimulus in working memory (WM) facilitates the deployment of visual attention to that stimulus relative to other stimuli. The present study examined whether maintaining a specific task in WM would also bias the allocation of attention to the stimuli associated with that task. Participants performed a speeded letter search task while simultaneously keeping in WM one of two task cues shown at the beginning of each trial. The results showed that task-based WM guidance of attention was modulated by response latencies. Whereas the participants with fast reaction times showed little influence of WM contents, the participants with slow reaction times took longer to respond when the letter target appeared in a distractor stimulus consistent with the task cue held in mind. A subsequent Stroop experiment found a larger Stroop interference effect from the participants in the slow group compared with those in the fast group, suggesting that the differential WM effect between the two groups may be associated with an individual's ability to inhibit task-irrelevant information. Taken together, these results expanded the realm of previous research and provided further evidence for a close link between attention and WM. [ABSTRACT FROM AUTHOR] AB - Copyright of Attention, Perception & Psychophysics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHORT-term memory KW - ATTENTION KW - REACTION time KW - VISUAL perception KW - PERCEPTION KW - Attention KW - Distractor inhibition KW - Visual search KW - Working memory N1 - Accession Number: 62290719; Chen, Zhe 1; Email Address: zhe.chen@canterbury.ac.nz Tsou, Brian 2; Affiliation: 1: Department of Psychology, University of Canterbury, Private Bag 4800 Christchurch New Zealand 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base USA; Source Info: May2011, Vol. 73 Issue 4, p1082; Subject Term: SHORT-term memory; Subject Term: ATTENTION; Subject Term: REACTION time; Subject Term: VISUAL perception; Subject Term: PERCEPTION; Author-Supplied Keyword: Attention; Author-Supplied Keyword: Distractor inhibition; Author-Supplied Keyword: Visual search; Author-Supplied Keyword: Working memory; Number of Pages: 14p; Document Type: Article L3 - 10.3758/s13414-010-0087-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62290719&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hong, G. AU - Cornish, A.J. AU - Hegg, E.L. AU - Pachter, R. T1 - On understanding proton transfer to the biocatalytic [Fe―Fe]H sub-cluster in [Fe―Fe]H2ases: QM/MM MD simulations JO - BBA - Bioenergetics JF - BBA - Bioenergetics Y1 - 2011/05// VL - 1807 IS - 5 M3 - Article SP - 510 EP - 517 SN - 00052728 AB - Abstract: Proton transfer to the [Fe―Fe]H sub-cluster in the Desulfovibrio desulfuricans (DdH) and Clostridium pasteurianum (CpI) [Fe―Fe] hydrogenases was investigated by a combination of first principles and empirical molecular dynamics simulations. Pathways that can be inferred from the X-ray crystal structures of DdH and CpI, i.e., (Glu159→Ser198→Glu156→water460→Cys178→DTMA([Fe―Fe]H) and (Glu282→Ser319→Glu279→water612→Cys299), respectively, were considered. Proton transfer from Cys178 to DTMA in the [Fe―Fe]H sub-cluster in DdH was readily observed in our results, specifically when [Fe―Fe]H was in the reduced state ([FeI―FeI]) or in the mixed valence state for the protonated distal iron Fed ([FeI―FeII―H−]H). A concerted mechanism is proposed, where proton transfer in DdH from Glu159 to Glu156 via Ser198 and Glu156 to Cys178 via water460 readily occurred, as well as from Glu282 to Glu279 via Ser319 and Glu279 to Cys299 via water612 in CpI. The theoretical prediction of the proton transfer characteristics is consistent with the assumed biocatalytic mechanism of the [Fe―Fe] hydrogenases in which the proton binds at Fed, providing confirmation that has not been explored so far. The computational results were qualitatively validated by the agreement with experimental hydrogen production activity data for mutated CpI enzymes, relative to the wild-type protein. Finally, the insight provided by the simulations, combined, in part, with experimental validation, are important for establishing an approach in future exploration of proton transfer to the active site in this class of enzymes, and possibly also for biomimetic analogs. [Copyright &y& Elsevier] AB - Copyright of BBA - Bioenergetics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHARGE transfer KW - PROTONS KW - ENZYMES KW - CLOSTRIDIUM KW - HYDROGEN KW - SIMULATION methods & models KW - PROTON transfer reactions KW - DESULFOVIBRIO KW - Fe―Fe KW - Hydrogen production activity KW - Hydrogenases KW - Proton transfer KW - QM/MM MD simulation N1 - Accession Number: 60041977; Hong, G. 1,2 Cornish, A.J. 3 Hegg, E.L. 3 Pachter, R. 1; Email Address: Ruth.Pachter@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: General Dynamics Information Technology, Dayton, OH 45431, USA 3: Michigan State University, East Lansing, MI 48824, USA; Source Info: May2011, Vol. 1807 Issue 5, p510; Subject Term: CHARGE transfer; Subject Term: PROTONS; Subject Term: ENZYMES; Subject Term: CLOSTRIDIUM; Subject Term: HYDROGEN; Subject Term: SIMULATION methods & models; Subject Term: PROTON transfer reactions; Subject Term: DESULFOVIBRIO; Author-Supplied Keyword: Fe―Fe; Author-Supplied Keyword: Hydrogen production activity; Author-Supplied Keyword: Hydrogenases; Author-Supplied Keyword: Proton transfer; Author-Supplied Keyword: QM/MM MD simulation; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.bbabio.2011.01.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60041977&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yoon, J.H. AU - Stewart, J.B. AU - Cazacu, O. T1 - Coupled elastic–plastic damage model for a porous aggregate with an incompressible matrix displaying tension–compression asymmetry JO - Engineering Fracture Mechanics JF - Engineering Fracture Mechanics Y1 - 2011/05// VL - 78 IS - 7 M3 - Article SP - 1407 EP - 1423 SN - 00137944 AB - Abstract: A significant strength differential effect (different behavior in tension versus compression) is observed at the polycrystal level, if either twinning or non-Schmid type slip are contributors to plastic deformation at the single crystal level. Despite recent progress in modeling the asymmetry in yielding, a description of damage by void growth in such materials remains a challenge. In this paper, an elastic–plastic damage model with yielding described by a plastic potential that depends on all invariants of the stress deviator is used. Single-element tests illustrate the salient features of the model. Simulation results of sheet-metal blanking show that if the compressive strength of the matrix is lower than its tensile strength, void growth and damage expansion is restricted. [Copyright &y& Elsevier] AB - Copyright of Engineering Fracture Mechanics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TENSILE architecture KW - DEFORMATIONS (Mechanics) KW - POLYCRYSTALS KW - STRAINS & stresses (Mechanics) KW - SHEET-metal KW - PLASTICITY KW - SIMULATION methods & models KW - COMPRESSION fractures KW - Constitutive modeling KW - Metals KW - Plastic theory KW - Tension–compression asymmetry KW - Void growth N1 - Accession Number: 60042797; Yoon, J.H. 1 Stewart, J.B. 2 Cazacu, O. 1; Email Address: cazacu@reef.ufl.edu; Affiliation: 1: Department of Mechanical and Aerospace Engineering, University of Florida, REEF, Shalimar, FL 32579, USA 2: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, USA; Source Info: May2011, Vol. 78 Issue 7, p1407; Subject Term: TENSILE architecture; Subject Term: DEFORMATIONS (Mechanics); Subject Term: POLYCRYSTALS; Subject Term: STRAINS & stresses (Mechanics); Subject Term: SHEET-metal; Subject Term: PLASTICITY; Subject Term: SIMULATION methods & models; Subject Term: COMPRESSION fractures; Author-Supplied Keyword: Constitutive modeling; Author-Supplied Keyword: Metals; Author-Supplied Keyword: Plastic theory; Author-Supplied Keyword: Tension–compression asymmetry; Author-Supplied Keyword: Void growth; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.engfracmech.2011.03.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60042797&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tawk, Y. AU - Costantine, J. AU - Avery, K. AU - Christodoulou, C. G. T1 - Implementation of a Cognitive Radio Front-End Using Rotatable Controlled Reconfigurable Antennas. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2011/05//05/01/2011 VL - 59 IS - 5 M3 - Article SP - 1773 EP - 1778 SN - 0018926X AB - This communication presents a new antenna system designed for cognitive radio applications. The antenna structure consists of a UWB antenna and a frequency reconfigurable antenna system. The UWB antenna scans the channel to discover “white space” frequency bands while tuning the reconfigurable section to communicate within these bands. The frequency agility is achieved via a rotational motion of the antenna patch. The rotation is controlled by a stepper motor mounted on the back of the antenna structure. The motor's rotational motion is controlled by LABVIEW on a computer connected to the motor through its parallel port. The computer's parallel port is connected to a NPN Darlington array that is used to drive the stepper motor. The antenna has been simulated with the driving motor being taken into consideration. A good agreement is found between the simulated and the measured antenna radiation properties. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRA-wideband antennas KW - SOFTWARE radio KW - COMMUNICATION & technology KW - RADIO frequency KW - DETECTORS KW - PARALLEL algorithms KW - SIMULATION methods & models KW - Antenna measurements KW - Antenna radiation patterns KW - Cognitive radio KW - Frequency measurement KW - Loss measurement KW - reconfigurable antenna KW - Sensors KW - Shape KW - stepper motor KW - UWB N1 - Accession Number: 60386935; Tawk, Y. 1 Costantine, J. 2 Avery, K. 3 Christodoulou, C. G. 1; Affiliation: 1: Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM, USA 2: Electrical Engineering Department, California State University Fullerton, Fullerton, 3: Space Vehicles Directorate Kirtland AFB, Air Force Research Laboratory, NM, USA; Source Info: 05/01/2011, Vol. 59 Issue 5, p1773; Subject Term: ULTRA-wideband antennas; Subject Term: SOFTWARE radio; Subject Term: COMMUNICATION & technology; Subject Term: RADIO frequency; Subject Term: DETECTORS; Subject Term: PARALLEL algorithms; Subject Term: SIMULATION methods & models; Author-Supplied Keyword: Antenna measurements; Author-Supplied Keyword: Antenna radiation patterns; Author-Supplied Keyword: Cognitive radio; Author-Supplied Keyword: Frequency measurement; Author-Supplied Keyword: Loss measurement; Author-Supplied Keyword: reconfigurable antenna; Author-Supplied Keyword: Sensors; Author-Supplied Keyword: Shape; Author-Supplied Keyword: stepper motor; Author-Supplied Keyword: UWB; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TAP.2011.2122239 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60386935&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, Fuyu AU - Su, Weifeng AU - Batalama, Stella AU - Matyjas, John D. T1 - Joint Power Optimization for Multi-Source Multi-Destination Relay Networks. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing Y1 - 2011/05//05/01/2011 VL - 59 IS - 5 M3 - Article SP - 2370 EP - 2381 SN - 1053587X AB - In this paper, low-complexity joint power assignment algorithms are developed for multi-source multi-destination relay networks where multiple sources share a common relay that forwards all received signals simultaneously to destinations. In particular, we consider the following power optimization strategies: (i) Minimization of the total transmission power of the sources and the relay under the constraint that the signal-to-interference-plus-noise ratio (SINR) requirement of each source-destination pair is satisfied, and (ii) Maximization of the minimum SINR among all source-destination pairs subject to any given total power budget. Both optimization problems involve K power variables, where K is the number of source-destination pairs in the network, and an exhaustive search is prohibitive for large K. In this work, we develop a methodology that allows us to obtain an asymptotically tight approximation of the SINR and reformulate the original optimization problems to single-variable optimization problems, which can be easily solved by numerical search of the single variable. Then, the corresponding optimal transmission power at each source and relay can be calculated directly. The proposed optimization schemes are scalable and lead to power assignment algorithms that exhibit the same optimization complexity for any number (K) of source-destination pairs in the network. Moreover, we apply the methodology that we developed to solve a related max-min SINR based optimization problem in which we determine power assignment for the sources and the relay to maximize the minimum SINR among all source-destination pairs subject to any given total power budget. Extensive numerical studies illustrate and validate our theoretical developments. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTATIONAL complexity KW - COMPUTER networks KW - ALGORITHMS KW - CONSTRAINT satisfaction (Artificial intelligence) KW - SIGNAL-to-noise ratio KW - APPROXIMATION theory KW - ASYMPTOTIC expansions KW - MATHEMATICAL optimization KW - Approximation methods KW - Cooperative networks KW - Interference KW - interference relay channels KW - max-min SINR optimization KW - multi-source multi-destination relay networks KW - Optimization KW - optimum power allocation KW - Relays KW - Resource management KW - Signal to noise ratio N1 - Accession Number: 59954194; Chen, Fuyu 1 Su, Weifeng 1 Batalama, Stella 1 Matyjas, John D. 2; Affiliation: 1: Department of Electrical Engineering, State University of New York (SUNY) at Buffalo, Buffalo, NY, USA 2: Air Force Research Laboratory/RIGF, Rome, NY, USA; Source Info: 05/01/2011, Vol. 59 Issue 5, p2370; Subject Term: COMPUTATIONAL complexity; Subject Term: COMPUTER networks; Subject Term: ALGORITHMS; Subject Term: CONSTRAINT satisfaction (Artificial intelligence); Subject Term: SIGNAL-to-noise ratio; Subject Term: APPROXIMATION theory; Subject Term: ASYMPTOTIC expansions; Subject Term: MATHEMATICAL optimization; Author-Supplied Keyword: Approximation methods; Author-Supplied Keyword: Cooperative networks; Author-Supplied Keyword: Interference; Author-Supplied Keyword: interference relay channels; Author-Supplied Keyword: max-min SINR optimization; Author-Supplied Keyword: multi-source multi-destination relay networks; Author-Supplied Keyword: Optimization; Author-Supplied Keyword: optimum power allocation; Author-Supplied Keyword: Relays; Author-Supplied Keyword: Resource management; Author-Supplied Keyword: Signal to noise ratio; NAICS/Industry Codes: 541512 Computer Systems Design Services; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TSP.2011.2109958 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59954194&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cardimona, D.A. AU - Huang, D.H. AU - Cowan, V. AU - Morath, C. T1 - Infrared detectors for space applications JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2011/05// VL - 54 IS - 3 M3 - Article SP - 283 EP - 286 SN - 13504495 AB - Abstract: Two of the main requirements for space situational awareness are to locate and identify dim and/or distant objects. At the Air Force Research Laboratory’s Space Vehicles Directorate, we are investigating how nanostructured metal surfaces can produce plasmon-enhanced fields to address the first function. We are also investigating quantum interference effects in semiconductor quantum dots inside photonic crystal cavities to address the amplification of weak signals. To address the second function of identification of space objects, we are investigating a wavelength-tunable detector scheme that involves a coupled double quantum well structure with a thin middle barrier between the two wells. The photocurrent from this structure will be swept out with a lateral bias. In order to eliminate the diffraction loss of incident photons by a surface grating structure for the z-polarization required in normal quantum well infrared photodetector structures, we will grow an array of self-organized quantum dots buried in one of the quantum wells of a symmetric double quantum well structure. In this paper, we will first describe the requirements for detectors in space, then we will describe our work in the above topics, and finally we will briefly mention our forays into other areas of quantum-structured detectors for use in space. [Copyright &y& Elsevier] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFRARED detectors KW - NANOSTRUCTURED materials KW - METALLIC surfaces KW - PLASMONS (Physics) KW - SEMICONDUCTORS KW - QUANTUM dots KW - QUANTUM interference KW - PHOTOELECTRICITY KW - DIFFRACTION loss KW - SURFACES (Technology) KW - Frequency agile detection KW - Optical signal amplification KW - Photonic crystals KW - Plasmonic field enhancement KW - Space situational awareness KW - Space surveillance N1 - Accession Number: 60083425; Cardimona, D.A.; Email Address: dave.cardimona@kirtland.af.mil Huang, D.H. 1 Cowan, V. 1 Morath, C. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Ave., S.E., Kirtland AFB, NM 87117-5776, United States; Source Info: May2011, Vol. 54 Issue 3, p283; Subject Term: INFRARED detectors; Subject Term: NANOSTRUCTURED materials; Subject Term: METALLIC surfaces; Subject Term: PLASMONS (Physics); Subject Term: SEMICONDUCTORS; Subject Term: QUANTUM dots; Subject Term: QUANTUM interference; Subject Term: PHOTOELECTRICITY; Subject Term: DIFFRACTION loss; Subject Term: SURFACES (Technology); Author-Supplied Keyword: Frequency agile detection; Author-Supplied Keyword: Optical signal amplification; Author-Supplied Keyword: Photonic crystals; Author-Supplied Keyword: Plasmonic field enhancement; Author-Supplied Keyword: Space situational awareness; Author-Supplied Keyword: Space surveillance; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.infrared.2010.12.030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60083425&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O.N. AU - Wilks, G.B. AU - Scott, J.M. AU - Miracle, D.B. T1 - Mechanical properties of Nb25Mo25Ta25W25 and V20Nb20Mo20Ta20W20 refractory high entropy alloys JO - Intermetallics JF - Intermetallics Y1 - 2011/05// VL - 19 IS - 5 M3 - Article SP - 698 EP - 706 SN - 09669795 AB - Abstract: Two refractory high entropy alloys with compositions near Nb25Mo25Ta25W25 and V20Nb20Mo20Ta20W20, were produced by vacuum arc-melting. Despite containing many constituents, both alloys had a single-phase body-centered cubic (BCC) structure that remained not only stable after exposure to 1400 °C, but also disordered, as confirmed by the absence of superlattice reflections in neutron diffraction data. Compressive flow properties and microstructure development of these alloys were determined from room temperature up to 1600 °C. Limited compressive plasticity and quasi-cleavage fracture at room temperature suggest that the ductile-to-brittle transition for these alloys occurs above room temperature. At 600 °C and above, both alloys showed extensive compressive plastic strain. The yield stress of both alloys dropped by 30–40% between room temperature and 600 °C, but was relatively insensitive to temperature above 600 °C, comparing favorably with conventional superalloys. [Copyright &y& Elsevier] AB - Copyright of Intermetallics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Mechanical properties KW - NIOBIUM alloys KW - MICROSTRUCTURE KW - VACUUM arcs KW - INTERMETALLIC compounds KW - HEAT resistant alloys KW - A. Intermetallics, miscellaneous KW - B. Mechanical properties at high temperatures KW - D. Microstructure (as-cast, deformation-induced, recrystallization-induced) KW - Mechanical properties at ambient temperature N1 - Accession Number: 59170384; Senkov, O.N. 1,2; Email Address: oleg.senkov@wpafb.af.mil Wilks, G.B. 1,3 Scott, J.M. 1,2 Miracle, D.B. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: UES, Inc., Dayton, OH 45432, USA 3: General Dynamics Corporation, Dayton, OH 45431, USA; Source Info: May2011, Vol. 19 Issue 5, p698; Subject Term: METALS -- Mechanical properties; Subject Term: NIOBIUM alloys; Subject Term: MICROSTRUCTURE; Subject Term: VACUUM arcs; Subject Term: INTERMETALLIC compounds; Subject Term: HEAT resistant alloys; Author-Supplied Keyword: A. Intermetallics, miscellaneous; Author-Supplied Keyword: B. Mechanical properties at high temperatures; Author-Supplied Keyword: D. Microstructure (as-cast, deformation-induced, recrystallization-induced); Author-Supplied Keyword: Mechanical properties at ambient temperature; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.intermet.2011.01.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59170384&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Riley, Matthew E. AU - Grandhi, Ramana V. AU - Kolonay, Raymond T1 - Quantification of Modeling Uncertainty in Aeroelastic Analyses. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2011/05//May/Jun2011 VL - 48 IS - 3 M3 - Article SP - 866 EP - 873 SN - 00218669 AB - Traditional uncertainty quantification techniques in engineering analysis concentrate on the quantification of parametric uncertainties: inherent natural variations of the input variables. In problems with complex or newer modeling methodologies, the variabilities induced by the modeling process itself (known as model-form and predictive uncertainties) can become a significant source of uncertainty to the problem. This work demonstrates two model-form uncertainty quantification methods on an unsteady aeroelastic problem: Bayesian model averaging and the adjustment factors approach. While the Bayesian model averaging approach is more robust and has been shown to more completely quantify the total uncertainty, it also requires the presence of experimental data, which are not always readily available in preliminary design. As such, this work introduces an uncertainty quantification methodology for use in aeroelastic analysis that uses the modeling uncertainty to drive the necessity of further experimental data points. Within this methodology, the modified adjustment factors approach has been developed to calculate the sensitivity of the adjusted models to the model probability assumptions being input into the work, facilitating the flow of the design methodology. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - VARIABLES (Mathematics) KW - BAYESIAN analysis KW - ENGINEERING KW - MATHEMATICAL models N1 - Accession Number: 63174852; Riley, Matthew E. 1; Email Address: riley.35@wright.edu Grandhi, Ramana V. 1; Email Address: ramana.grandhi@wright.edu Kolonay, Raymond 2; Email Address: raymond.kolonay@wpafb.af.mil; Affiliation: 1: Wright State University, Dayton, Ohio 45435 2: U.S. Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45435; Source Info: May/Jun2011, Vol. 48 Issue 3, p866; Subject Term: AEROELASTICITY; Subject Term: VARIABLES (Mathematics); Subject Term: BAYESIAN analysis; Subject Term: ENGINEERING; Subject Term: MATHEMATICAL models; Number of Pages: 8p; Document Type: Article L3 - 10.2514/1.C031059 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=63174852&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sherer, Scott E. AU - Visbal, Miguel R. AU - Gordnier, Raymond E. AU - Yilmaz, Turgut O. AU - Rockwell, Donald O. T1 - 1303 Unmanned Combat Air Vehicle Flowfield Simulations and Comparison with Experimental Data. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2011/05//May/Jun2011 VL - 48 IS - 3 M3 - Article SP - 1005 EP - 1019 SN - 00218669 AB - In this work, high-order computations of the flowfield around a 1303 unmanned combat air vehicle configuration are performed and compared with recently collected experimental data obtained at Lehigh University. The computational approach used a high-order overset-grid flow solver developed in the Air Vehicles Directorate of the U.S. Air Force Research Laboratory that employs up-to-sixth-order compact finite differences and high-order, low-pass numerical filters to accurately resolve detailed flow features in a robust manner. The experimental data was collected via a particle image velocimetry technique in a free-surface water channel. Both quantitative and qualitative comparisons between computational and experimental results are done at a plane located at eight-tenths of the half-span for various Reynolds numbers and angles of attack, with the results comparing quite favorably for most flow conditions. Computational images of the flowfield are used to elucidate angle of attack and Reynolds number effects on this configuration, as well as to investigate the formation and evolution of the leading-edge and centerbody vortical structures and the impact that angle of attack has on their formation mechanisms. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DRONE aircraft KW - ARMORED military vehicles KW - AIR flow KW - REYNOLDS number KW - UNITED States N1 - Accession Number: 63174865; Sherer, Scott E. 1 Visbal, Miguel R. 1 Gordnier, Raymond E. 1 Yilmaz, Turgut O. 2 Rockwell, Donald O. 2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Lehigh University Bethlehem, Pennsylvania 18015; Source Info: May/Jun2011, Vol. 48 Issue 3, p1005; Subject Term: DRONE aircraft; Subject Term: ARMORED military vehicles; Subject Term: AIR flow; Subject Term: REYNOLDS number; Subject Term: UNITED States; NAICS/Industry Codes: 336992 Military Armored Vehicle, Tank, and Tank Component Manufacturing; NAICS/Industry Codes: 561613 Armored Car Services; NAICS/Industry Codes: 336990 Other transportation equipment manufacturing; Number of Pages: 15p; Document Type: Article L3 - 10.2514/1.C031195 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=63174865&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zheng, Qiuhua AU - Fok, Mei-Ching AU - Albert, Jay AU - Horne, Richard B. AU - Meredith, Nigel P. T1 - Effects of energy and pitch angle mixed diffusion on radiation belt electrons JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2011/05// VL - 73 IS - 7/8 M3 - Article SP - 785 EP - 795 SN - 13646826 AB - Abstract: Understanding the dynamics of the Earth’s radiation belts is important for modeling and forecasting the intensities of energetic electrons in space. Wave diffusion processes are known to be responsible for loss and acceleration of electrons in the radiation belts. Several recent studies indicate pitch angle and energy mixed-diffusion are also important when considering the total diffusive effects. In this study, a two-dimensional Fokker Planck equation is solved numerically using the Alternating Direction Implicit method. Mixed diffusion due to whistler-mode chorus waves tends to slow down the total diffusion in the energy-pitch angle space, particularly at smaller equatorial pitch angles. We then incorporate the electron energy and pitch angle mixed diffusions due to whistler-model chorus waves into the 4-dimensional Radiation Belt Environment (RBE) model and study the effect of mixed diffusion during a storm in October 2002. The 4-D simulation results show that energy and pitch angle mixed diffusion decrease the electron fluxes in the outer belt while electron fluxes in the slot region are enhanced (up to a factor of 2) during storm time. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIFFUSION KW - RADIATION belts KW - ELECTRONS KW - FOKKER-Planck equation -- Numerical solutions KW - SIMULATION methods & models KW - NUMERICAL analysis KW - Mixed diffusion KW - Radiation belt N1 - Accession Number: 59776569; Zheng, Qiuhua 1,2; Email Address: qiuhua.zheng@nasa.gov Fok, Mei-Ching 2 Albert, Jay 3 Horne, Richard B. 4 Meredith, Nigel P. 4; Affiliation: 1: Department of Astronomy, University of Maryland at College Park, USA 2: NASA Goddard Space Flight Center, Greenbelt, MD, USA 3: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, MA, USA 4: Physics Science Division, British Antarctic Survey, Cambridge, UK; Source Info: May2011, Vol. 73 Issue 7/8, p785; Subject Term: DIFFUSION; Subject Term: RADIATION belts; Subject Term: ELECTRONS; Subject Term: FOKKER-Planck equation -- Numerical solutions; Subject Term: SIMULATION methods & models; Subject Term: NUMERICAL analysis; Author-Supplied Keyword: Mixed diffusion; Author-Supplied Keyword: Radiation belt; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.jastp.2011.01.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59776569&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alarcon, Gene M. AU - Edwards, Jean M. AU - Menke, Lauren E. T1 - Student Burnout and Engagement: A Test of the Conservation of Resources Theory. JO - Journal of Psychology JF - Journal of Psychology Y1 - 2011/05// VL - 145 IS - 3 M3 - Article SP - 211 EP - 227 PB - Taylor & Francis Ltd SN - 00223980 AB - The current study explored predictors of burnout and engagement in 1st-year college students. The theory of conservation of resources was used to create a path model for burnout and engagement. Specifically, the theory suggests that perceptions of demands mediate the relationship between resources and coping strategies. In turn, coping mediates the relationship of demands on the outcomes of burnout and engagement. Results indicate demands partially mediated the relationship between resources and coping strategies. Similarly, coping partially mediated the relationship between demands and burnout and engagement. Results suggest that teaching students adaptive ways of coping and extinguishing maladaptive ways of coping with the academic environment can increase engagement and decrease burnout. Implications for research, theory, and practice are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLEGE students -- Psychology KW - BURNOUT (Psychology) KW - ADJUSTMENT (Psychology) KW - ENGAGEMENT (Philosophy) KW - CONSERVATION of natural resources KW - PATH analysis (Statistics) KW - DEMAND (Economic theory) KW - burnout KW - college students KW - coping KW - engagement N1 - Accession Number: 59755079; Alarcon, Gene M. 1 Edwards, Jean M. 2 Menke, Lauren E. 2; Affiliation: 1: Air Force Research Laboratory, 2: Wright State University,; Source Info: May2011, Vol. 145 Issue 3, p211; Subject Term: COLLEGE students -- Psychology; Subject Term: BURNOUT (Psychology); Subject Term: ADJUSTMENT (Psychology); Subject Term: ENGAGEMENT (Philosophy); Subject Term: CONSERVATION of natural resources; Subject Term: PATH analysis (Statistics); Subject Term: DEMAND (Economic theory); Author-Supplied Keyword: burnout; Author-Supplied Keyword: college students; Author-Supplied Keyword: coping; Author-Supplied Keyword: engagement; NAICS/Industry Codes: 924120 Administration of Conservation Programs; Number of Pages: 17p; Illustrations: 3 Diagrams, 1 Chart; Document Type: Article L3 - 10.1080/00223980.2011.555432 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59755079&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jawa, Randeep S. AU - Warren, Kathy AU - Young, David AU - Wagner, Michel AU - Nelson, Lawrence AU - Yetter, Diane AU - Banks, Shane AU - Shostrom, Valerie AU - Stothert, Joseph T1 - Venous Thromboembolic Disease in Trauma and Surveillance Ultrasonography 1 JO - Journal of Surgical Research JF - Journal of Surgical Research Y1 - 2011/05// VL - 167 IS - 1 M3 - Article SP - 24 EP - 31 SN - 00224804 AB - Background: The literature reports a wide variation in the incidence of venous thromboembolic (VTE) disease in trauma patients. The performance of routine surveillance venous duplex ultrasound of bilateral lower extremities is controversial. Furthermore, recent examinations of the national trauma databank registry have suggested that routine duplex surveillance is associated with higher deep venous thrombosis (DVT) detection rates. Materials and Methods: We examined the incidence and risk factors for VTE disease in 2827 trauma patients admitted over a 2-y period to a state-verified level I trauma center. Detailed chart review was carried out for patients with VTE disease. We then evaluated the effects of a routine bilateral lower extremity duplex surveillance guideline on VTE detection in the subset of injury patients admitted to the trauma service. Results: We found an approximately 2% incidence of venous thromboembolic disease in a mostly blunt trauma population. Amongst patients with VTE disease, the most common risk factors were obesity and significant head injury. We then evaluated the 998 patients with injury who were admitted to the trauma service 1 y before and after surveillance guideline implementation. Despite a nearly 5-fold increase in the number of duplex scans, with a substantial increase in cost, we found no significant difference in the incidence of DVT. Conclusions: Our preliminary data argue against the use of routine duplex surveillance of lower extremities for DVT in trauma patients. A larger, prospective analysis is necessary to confirm these findings. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Surgical Research is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THROMBOEMBOLISM KW - WOUNDS & injuries KW - PATIENTS KW - ULTRASONIC imaging KW - PULMONARY embolism KW - GUIDELINES KW - BLUNT trauma KW - LEG -- Blood-vessels KW - duplex KW - DVT KW - embolism KW - PE KW - pulmonary KW - surveillance KW - thrombus KW - trauma KW - ultrasound KW - venous N1 - Accession Number: 59638188; Jawa, Randeep S. 1; Email Address: rjawa@unmc.edu Warren, Kathy 2 Young, David 1 Wagner, Michel 1 Nelson, Lawrence 1 Yetter, Diane 2 Banks, Shane 3 Shostrom, Valerie 4 Stothert, Joseph 1; Affiliation: 1: Department of Surgery, University of Nebraska Medical Center, Omaha, Nebraska 2: Nebraska Medical Center, Omaha, Nebraska 3: United States Air Force 4: College of Public Health, University of Nebraska Medical Center, Omaha, Nebraska; Source Info: May2011, Vol. 167 Issue 1, p24; Subject Term: THROMBOEMBOLISM; Subject Term: WOUNDS & injuries; Subject Term: PATIENTS; Subject Term: ULTRASONIC imaging; Subject Term: PULMONARY embolism; Subject Term: GUIDELINES; Subject Term: BLUNT trauma; Subject Term: LEG -- Blood-vessels; Author-Supplied Keyword: duplex; Author-Supplied Keyword: DVT; Author-Supplied Keyword: embolism; Author-Supplied Keyword: PE; Author-Supplied Keyword: pulmonary; Author-Supplied Keyword: surveillance; Author-Supplied Keyword: thrombus; Author-Supplied Keyword: trauma; Author-Supplied Keyword: ultrasound; Author-Supplied Keyword: venous; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jss.2010.09.046 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59638188&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kalns, John AU - Cox, Jennifer AU - Baskin, Jonathan AU - Santos, Adrienne AU - Odland, Rick AU - Fecura, Stephen T1 - Threshold Model for Extremity Compartment Syndrome in Swine JO - Journal of Surgical Research JF - Journal of Surgical Research Y1 - 2011/05// VL - 167 IS - 1 M3 - Article SP - e13 EP - e19 SN - 00224804 AB - Background: Extremity compartment syndrome occurs when swelling develops within a muscle compartment to such an extent that the microvasculature is compressed and tissue perfusion is compromised. Untreated, this condition can result in widespread tissue destruction and loss of the affected limb. Methods: Swine were subjected to diffuse muscle compression injury using a balloon catheter inserted between the anterior muscle compartment of the hind limb and the anterior face of the tibia. Balloons were inflated with saline to produce a sustained intramuscular pressure (IMP) of approximately 30 mmHg greater than mean arterial pressure. Following injury the IMP was monitored for up to 8 h. At the end of the monitoring period, the tibialis anterior muscle was collected and examined for injury. Results: One animal receiving 6 h injury dislodged the implanted pressure transducers and was dropped from the data analysis. In all other limbs (n = 8) receiving 6 h injury, significant spontaneous increases in IMP were observed following injury. The tibialis anterior in all of the 6 h injury limbs also showed extensive tissue damage. In the limbs injured for 5 h (n = 10), only three showed a significant increase in IMP. The magnitude and duration of this increase closely resembled that seen following 6 h injury. Tissue damage was reduced in comparison with 6 h injury. Conclusions: The injury technique described here provides a potential useful threshold model for studying extremity compartment syndrome and the influence of related factors on the progression of this condition. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Surgical Research is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPARTMENT syndrome KW - SWINE as laboratory animals KW - EXTREMITIES (Anatomy) -- Blood-vessels -- Diseases KW - NEUTROPHILS KW - INFLAMMATION KW - EDEMA KW - CATHETERS KW - LEG -- Muscles KW - compartment syndrome KW - edema KW - inflammation KW - neutrophil KW - swine model KW - threshold pressure KW - tibialis anterior N1 - Accession Number: 59638179; Kalns, John 1; Email Address: johnkalns@hyperionbiotechnology.com Cox, Jennifer 1 Baskin, Jonathan 1 Santos, Adrienne 1 Odland, Rick 2 Fecura, Stephen 3; Affiliation: 1: Clinical Research Division, Hyperion Biotechnology, Inc., San Antonio, Texas 2: Hennepin County Medical Center, Twinstar Medical, Inc., Minneapolis, Minnesota 3: United States Air Force; Source Info: May2011, Vol. 167 Issue 1, pe13; Subject Term: COMPARTMENT syndrome; Subject Term: SWINE as laboratory animals; Subject Term: EXTREMITIES (Anatomy) -- Blood-vessels -- Diseases; Subject Term: NEUTROPHILS; Subject Term: INFLAMMATION; Subject Term: EDEMA; Subject Term: CATHETERS; Subject Term: LEG -- Muscles; Author-Supplied Keyword: compartment syndrome; Author-Supplied Keyword: edema; Author-Supplied Keyword: inflammation; Author-Supplied Keyword: neutrophil; Author-Supplied Keyword: swine model; Author-Supplied Keyword: threshold pressure; Author-Supplied Keyword: tibialis anterior; NAICS/Industry Codes: 339110 Medical equipment and supplies manufacturing; NAICS/Industry Codes: 339112 Surgical and Medical Instrument Manufacturing; Number of Pages: 0p; Document Type: Article L3 - 10.1016/j.jss.2010.12.041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59638179&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boyd, Iain D. AU - Josyula, Eswar T1 - State resolved vibrational relaxation modeling for strongly nonequilibrium flows. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2011/05// VL - 23 IS - 5 M3 - Article SP - 057101 PB - American Institute of Physics SN - 10706631 AB - Vibrational relaxation is an important physical process in hypersonic flows. Activation of the vibrational mode affects the fundamental thermodynamic properties and finite rate relaxation can reduce the degree of dissociation of a gas. Low fidelity models of vibrational activation employ a relaxation time to capture the process at a macroscopic level. High fidelity, state-resolved models have been developed for use in continuum gas dynamics simulations based on computational fluid dynamics (CFD). By comparison, such models are not as common for use with the direct simulation Monte Carlo (DSMC) method. In this study, a high fidelity, state-resolved vibrational relaxation model is developed for the DSMC technique. The model is based on the forced harmonic oscillator approach in which multi-quantum transitions may become dominant at high temperature. Results obtained for integrated rate coefficients from the DSMC model are consistent with the corresponding CFD model. Comparison of relaxation results obtained with the high-fidelity DSMC model shows significantly less excitation of upper vibrational levels in comparison to the standard, lower fidelity DSMC vibrational relaxation model. Application of the new DSMC model to a Mach 7 normal shock wave in carbon monoxide provides better agreement with experimental measurements than the standard DSMC relaxation model. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERSONIC flow KW - CARBON monoxide KW - HARMONIC oscillators KW - MONTE Carlo method KW - COMPUTATIONAL fluid dynamics N1 - Accession Number: 83493986; Boyd, Iain D. 1 Josyula, Eswar 2; Affiliation: 1: Department of Aerospace Engineering, University of Michigan, Ann Arbor, Michigan 48109, 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: May2011, Vol. 23 Issue 5, p057101; Subject Term: HYPERSONIC flow; Subject Term: CARBON monoxide; Subject Term: HARMONIC oscillators; Subject Term: MONTE Carlo method; Subject Term: COMPUTATIONAL fluid dynamics; Number of Pages: 9p; Illustrations: 8 Graphs; Document Type: Article L3 - 10.1063/1.3584128 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83493986&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Marconi, Vincent C. AU - Grandits, Greg AU - Okulicz, Jason F. AU - Wortmann, Glenn AU - Ganesan, Anuradha AU - Crum-Cianflone, Nancy AU - Polis, Michael AU - Landrum, Michael AU - Dolan, Matthew J. AU - Ahuja, Sunil K. AU - Agan, Brian AU - Kulkarni, Hemant T1 - Cumulative Viral Load and Virologic Decay Patterns after Antiretroviral Therapy in HIV-Infected Subjects Influence CD4 Recovery and AIDS. JO - PLoS ONE JF - PLoS ONE Y1 - 2011/05// VL - 6 IS - 5 M3 - Article SP - 1 EP - 9 PB - Public Library of Science SN - 19326203 AB - Background: The impact of viral load (VL) decay and cumulative VL on CD4 recovery and AIDS after highly-active antiretroviral therapy (HAART) is unknown. Methods and Findings: Three virologic kinetic parameters (first year and overall exponential VL decay constants, and first year VL slope) and cumulative VL during HAART were estimated for 2,278 patients who initiated HAART in the U.S. Military HIV Natural History Study. CD4 and VL trajectories were computed using linear and nonlinear Generalized Estimating Equations models. Multivariate Poisson and linear regression models were used to determine associations of VL parameters with CD4 recovery, adjusted for factors known to correlate with immune recovery. Cumulative VL higher than the sample median was independently associated with an increased risk of AIDS (relative risk 2.38, 95% confidence interval 1.56-3.62, p<0.001). Among patients with VL suppression, first year VL decay and slope were independent predictors of early CD4 recovery (p = 0.001) and overall gain (p<0.05). Despite VL suppression, those with slow decay during the first year of HAART as well as during the entire therapy period (overall), in general, gained less CD4 cells compared to the other subjects (133 vs. 195.4 cells/μL; p = 0.001) even after adjusting for potential confounders. Conclusions: In a cohort with free access to healthcare, independent of established predictors of AIDS and CD4 recovery during HAART, cumulative VL and virologic decay patterns were associated with AIDS and distinct aspects of CD4 reconstitution. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MEDICAL care KW - VIRAL load KW - CD4 antigen KW - AIDS (Disease) KW - HIGHLY active antiretroviral therapy KW - MEDICAL virology KW - REGRESSION analysis KW - UNITED States N1 - Accession Number: 73816198; Marconi, Vincent C. 1,2; Email Address: vcmarco@emory.edu Grandits, Greg 2,3 Okulicz, Jason F. 2,4 Wortmann, Glenn 2,5 Ganesan, Anuradha 2,6 Crum-Cianflone, Nancy 2,7 Polis, Michael 2,8 Landrum, Michael 2,4 Dolan, Matthew J. 9 Ahuja, Sunil K. 10,11,12 Agan, Brian 2 Kulkarni, Hemant 10,11; Email Address: kulkarnih@uthscsa.edu; Affiliation: 1: Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia, United States of America 2: Infectious Disease Clinical Research Program, Uniformed Services University of Health Sciences, Bethesda, Maryland, United States of America 3: Division of Biostatistics, University of Minnesota, Minneapolis, Minnesota, United States of America 4: Infectious Disease Service, San Antonio Military Medical Center, Brooke Army Medical Center, Fort Sam Houston, Texas, United States of America 5: Infectious Disease Service, Walter Reed Army Medical Center, Washington, D.C., United States of America 6: Infectious Disease Clinic, National Naval Medical Center, Bethesda, Maryland, United States of America 7: Infectious Disease Clinic, Naval Medical Center San Diego, San Diego, California, United States of America 8: National Institute for Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America 9: Henry M. Jackson Foundation, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas, United States of America 10: Veterans Administration Research Center for AIDS and HIV-1 Infection, South Texas Veterans Health Care System, San Antonio, Texas, United States of America 11: Department of Medicine, University of Texas Health Science Center, San Antonio, Texas, United States of America 12: Department of Microbiology and Immunology, and Biochemistry, University of Texas Health Science Center, San Antonio, Texas, United States of America; Source Info: 2011, Vol. 6 Issue 5, p1; Subject Term: MEDICAL care; Subject Term: VIRAL load; Subject Term: CD4 antigen; Subject Term: AIDS (Disease); Subject Term: HIGHLY active antiretroviral therapy; Subject Term: MEDICAL virology; Subject Term: REGRESSION analysis; Subject Term: UNITED States; Number of Pages: 9p; Document Type: Article L3 - 10.1371/journal.pone.0017956 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73816198&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - RPRT AU - Carroll, Matthew B. AU - Holmes, Robert T1 - Dermatomyositis and HIV infection: case report and review of the literature. JO - Rheumatology International JF - Rheumatology International Y1 - 2011/05// VL - 31 IS - 5 M3 - Report SP - 673 EP - 679 SN - 1437160X AB - Since the 1980s, a host of autoimmune phenomena and rheumatologic illnesses have been linked to infection with the human immunodeficiency virus (HIV). Given the broad effects of this virus on both the humoral and cell-mediated arms of the immune system, illnesses such as polymyositis and Reiter's syndrome appear to be more prevalent in HIV-infected individuals and occur in the absence of well-described predispositions. The activities of some rheumatologic illnesses exhibit an inverse relationship with the course of HIV infection, such as rheumatoid arthritis, which becomes more quiescent with advancing disease. Dermatomyositis is a rheumatologic illness that very infrequently occurs and during our review of literature only three other cases were reported. We present the case of a Caucasian male in his mid-20s who presented with acquired immunodeficiency syndrome and subsequently developed dermatomyositis. In this review, we highlight the current relationship between HIV infection and autoimmunity, the possible ways HIV infection may foster an environment favorable for the development of dermatomyositis, and review the previously reported cases of individuals with HIV infection who developed dermatomyositis. The complex issues of how to treat individuals with HIV and dermatomyositis is also discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Rheumatology International is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AUTOIMMUNE diseases KW - RHEUMATOLOGY KW - HIV (Viruses) KW - POLYMYOSITIS KW - IMMUNE system KW - AIDS KW - Dermatomyositis KW - Human immunodeficiency virus KW - Human immunodeWciency virus KW - Immune reconstitution inflammatory syndrome KW - Immune reconstitution inXammatory syndrome N1 - Accession Number: 60133110; Carroll, Matthew B. 1; Email Address: matthew.carroll@keesler.af.mil Holmes, Robert 1; Email Address: robert.holmes@keesler.af.mil; Affiliation: 1: United States Air Force, 301 Fisher Street, Keesler AFB, MS 39534, USA.; Source Info: May2011, Vol. 31 Issue 5, p673; Subject Term: AUTOIMMUNE diseases; Subject Term: RHEUMATOLOGY; Subject Term: HIV (Viruses); Subject Term: POLYMYOSITIS; Subject Term: IMMUNE system; Author-Supplied Keyword: AIDS; Author-Supplied Keyword: Dermatomyositis; Author-Supplied Keyword: Human immunodeficiency virus; Author-Supplied Keyword: Human immunodeWciency virus; Author-Supplied Keyword: Immune reconstitution inflammatory syndrome; Author-Supplied Keyword: Immune reconstitution inXammatory syndrome; Number of Pages: 7p; Illustrations: 2 Charts; Document Type: Report L3 - 10.1007/s00296-009-1231-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60133110&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tirry, W. AU - Nixon, M. AU - Cazacu, O. AU - Coghe, F. AU - Rabet, L. T1 - The importance of secondary and ternary twinning in compressed Ti JO - Scripta Materialia JF - Scripta Materialia Y1 - 2011/05// VL - 64 IS - 9 M3 - Article SP - 840 EP - 843 SN - 13596462 AB - Twin formation during uniaxial compression of high-purity α-Ti at room temperature is investigated for both quasi-static and dynamic conditions using electron backscatter diffraction techniques. The initial texture is favorable for twinning, yet it is observed that secondary and ternary twins occur for both strain rates, showing a higher propensity in the dynamic case. While secondary twins may explain the difference in texture change and strain hardening between the two loading conditions, the ternary twins mainly contribute to grain fractioning. [ABSTRACT FROM AUTHOR] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TWINNING (Crystallography) KW - DEFORMATIONS (Mechanics) KW - TITANIUM KW - ELECTRONS -- Backscattering KW - STRAIN hardening KW - TEMPERATURE KW - METALS -- Texture KW - Electron backscatter diffraction (EBSD) KW - Plastic deformation ( Titanium ) KW - Texture KW - Twinning N1 - Accession Number: 58751649; Tirry, W. 1; Email Address: wim.tirry@ua.ac.be Nixon, M. 2 Cazacu, O. 3 Coghe, F. 1 Rabet, L. 1; Affiliation: 1: Department of Civil and Materials Engineering, Royal Military Academy, Renaissancelaan 30, 1000 Brussels, Belgium 2: Air Force Research Laboratory, Eglin, FL 32579, USA 3: Department of Mechanical and Aerospace Engineering, University of Florida, REEF, Shalimar, FL 32579, USA; Source Info: May2011, Vol. 64 Issue 9, p840; Subject Term: TWINNING (Crystallography); Subject Term: DEFORMATIONS (Mechanics); Subject Term: TITANIUM; Subject Term: ELECTRONS -- Backscattering; Subject Term: STRAIN hardening; Subject Term: TEMPERATURE; Subject Term: METALS -- Texture; Author-Supplied Keyword: Electron backscatter diffraction (EBSD); Author-Supplied Keyword: Plastic deformation ( Titanium ); Author-Supplied Keyword: Texture; Author-Supplied Keyword: Twinning; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2011.01.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58751649&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reising, Monica AU - Morris, Max AU - Vardeman, Stephen AU - Higbee, Shawn T1 - Modeling Spectral-Temporal Data From Point Source Events. JO - Technometrics JF - Technometrics Y1 - 2011/05// VL - 53 IS - 2 M3 - Article SP - 183 EP - 195 SN - 00401706 AB - In recent years, a great deal of effort has been invested in developing sensors to detect, locate, and identify 'energetic' electromagnetic events. When observed through one type of imaging spectrometer, these events produce a data record that contains complete spectral and temporal information over the event's evolution. This article describes the development of a statistical model for the data produced by a particular spectral-temporal sensor. While the application is unique in some ways, this approach to model building may be useful in other related contexts. Several plots, estimated parameters, and some additional details for an equation are provided in the Appendix which is available as supplementary material online. [ABSTRACT FROM AUTHOR] AB - Copyright of Technometrics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFRARED array detectors KW - IMAGING systems -- Software KW - IMAGE converters KW - DETECTORS KW - SPECTROMETERS KW - OPTICAL engineering -- Research KW - Event discrimination KW - Infrared KW - Product correlation KW - Pseudo-imaging KW - Spectral imager N1 - Accession Number: 60118136; Reising, Monica 1 Morris, Max 1 Vardeman, Stephen 1 Higbee, Shawn 2; Affiliation: 1: Department of Statistics Iowa State University Ames, IA 50011 2: Air Force Research Laboratory Sensors Directorate Hanscom AFB Bedford, MA 01731; Source Info: May2011, Vol. 53 Issue 2, p183; Subject Term: INFRARED array detectors; Subject Term: IMAGING systems -- Software; Subject Term: IMAGE converters; Subject Term: DETECTORS; Subject Term: SPECTROMETERS; Subject Term: OPTICAL engineering -- Research; Author-Supplied Keyword: Event discrimination; Author-Supplied Keyword: Infrared; Author-Supplied Keyword: Product correlation; Author-Supplied Keyword: Pseudo-imaging; Author-Supplied Keyword: Spectral imager; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1198/TECH.2011.09014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60118136&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Christe, Karl O. AU - Haiges, Ralf AU - Boatz, Jerry A. AU - Jenkins, H. Donald Brooke AU - Garner, Edward B. AU - Dixon, David A. T1 - Why Are [P(C6H5)4]+N3- and [As(C6H5)4]+N3- Ionic Salts and Sb(C6H5)4N3 and Bi(C6H5)4N3 Covalent Solids? A Theoretical Study Provides an Unexpected Answer. JO - Inorganic Chemistry JF - Inorganic Chemistry Y1 - 2011/04/18/ VL - 50 IS - 8 M3 - Article SP - 3752 EP - 3756 SN - 00201669 AB - A recent crystallographic study has shown that, in the solid state, P(C6H5)4N3 and As((C6H5)4N3 have ionic [M(C6H5)4]+N3--type structures, whereas Sb(C6H5)4N3 exists as a pentacoordinated covalent solid. Using the results from density functional theory, lattice energy (VBT) calculations, sublimation energy estimates, and Born-Fajans-Haber cycles, it is shown that the maximum coordination numbers of the central atom M, the lattice energies of the ionic solids, and the sublimation energies of the covalent solids have no or little influence on the nature of the solids. Unexpectedly, the main factor determining whether the covalent or ionic structures are energetically favored is the first ionization potential of [M(C6H5)4]. The calculations show that at ambient temperature the ionic structure is favored for P(C6H5)4N3 and the covalent structures are favored for Sb(C6H5)4N3 and Bi(C6H5)4N3, while As(C6H5)4N3 presents a borderline case. [ABSTRACT FROM AUTHOR] AB - Copyright of Inorganic Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALLOGRAPHY KW - RESEARCH KW - SOLID state chemistry KW - IONIC structure KW - SUBLIMATION (Chemistry) KW - DENSITY functionals KW - IONIZATION (Atomic physics) N1 - Accession Number: 66858232; Christe, Karl O. 1 Haiges, Ralf 1 Boatz, Jerry A. 2 Jenkins, H. Donald Brooke 3 Garner, Edward B. 4 Dixon, David A. 4; Affiliation: 1: Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States 2: Space and Missile Propulsion Division, Air Force Research Laboratory (AFRL/RZS), Edwards Air Force Base, California 93524, United States 3: Department of Chemistry, University of Warwick, Coventry CV4 7AL, West Midlands, U.K. 4: Department of Chemistry, University of Alabama, Tuscaloosa, Alabama 35487-0336, United States; Source Info: 4/18/2011, Vol. 50 Issue 8, p3752; Subject Term: CRYSTALLOGRAPHY; Subject Term: RESEARCH; Subject Term: SOLID state chemistry; Subject Term: IONIC structure; Subject Term: SUBLIMATION (Chemistry); Subject Term: DENSITY functionals; Subject Term: IONIZATION (Atomic physics); Number of Pages: 5p; Document Type: Article L3 - 10.1021/ic2001078 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66858232&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varshney, Vikas AU - Lee, Jonghoon AU - Roy, Ajit K. AU - Farmer, Barry L. T1 - Modeling of interface thermal conductance in longitudinally connected carbon nanotube junctions. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/04/15/ VL - 109 IS - 8 M3 - Article SP - 084913 PB - American Institute of Physics SN - 00218979 AB - This article explores the behavior of interface thermal conductance of longitudinally connected (6,6) nanotubes-connected through CH2 linkages-using nonequilibrium molecular dynamics (NEMD) and wave packet simulations. Here, we study the effect of connected linkers on the interface thermal conductance and thermal energy transmission coefficients for several phonon modes. Our simulation results suggest that interface thermal conductance between nanotubes strongly depends on the number of CH2 linkers. The more the number of CH2 linkers, the higher the conductance. Further insights into phonon energy transmission are provided from wave packet simulations. Here, we find that the behavior of transmission for various studied acoustic and optical phonon modes is complex in nature, where the thermal transmission coefficients do not always correlate with number of CH2 linkages. However, when the contributions from all the modes are added together, the overall interface thermal conductance agrees well with NEMD simulations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOTUBES KW - ANALYTICAL mechanics KW - WAVE packets KW - FULLERENES KW - MOLECULAR dynamics N1 - Accession Number: 86444339; Varshney, Vikas 1,2 Lee, Jonghoon 1,2 Roy, Ajit K. 1 Farmer, Barry L. 3; Affiliation: 1: Thermal Sciences and Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, 2: Universal Technology Corporation, 1270 N. Fairfield Rd., Dayton, Ohio 45432, 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: Apr2011, Vol. 109 Issue 8, p084913; Subject Term: NANOTUBES; Subject Term: ANALYTICAL mechanics; Subject Term: WAVE packets; Subject Term: FULLERENES; Subject Term: MOLECULAR dynamics; Number of Pages: 9p; Illustrations: 2 Diagrams, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1063/1.3560914 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86444339&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hayn, Ryan AU - Owens, Jeffery AU - Boyer, Stephanie AU - McDonald, Rashelle AU - Hoon Lee T1 - Preparation of highly hydrophobic and oleophobic textile surfaces using microwave-promoted silane coupling. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2011/04/15/ VL - 46 IS - 8 M3 - Article SP - 2503 EP - 2509 PB - Springer Science & Business Media B.V. SN - 00222461 AB - The wetting behavior of a solid surface is controlled by the geometric structure as well as the chemical composition of the material. In this study, highly hydrophobic and oleophobic materials were prepared by microwave-assisted cross-linking of perfluoroalkoxysilane onto nylon and cotton-blended fabric. Surface roughness was controlled by choice of the catalyst. Water catalysis resulted in a smooth coating deposition of the perfluoroalkoxysilanes on the fiber surface, while base catalysis resulted in a micro and nano scale rough surface on the fibers. Both water and base-catalyzed materials were superhydrophobic, but creating multi-scale geometric structure via base catalysis was required to improve oleophobicity. A series of experiments explored the parameters of fluorosilane concentration, base catalysis, curing time, and the number of cures. The apparent contact angles of the fabric samples treated in a multiple dip-and-cure sequence averaged 135° (hexadecane) and 148° (water) with no absorption of either within 60 h (hexadecane) or until complete evaporation (water). [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROPHOBIC surfaces KW - MICROWAVES KW - NYLON KW - COTTON textiles KW - NANOCHEMISTRY KW - ABSORPTION KW - EVAPORATION (Chemistry) N1 - Accession Number: 57529958; Hayn, Ryan 1 Owens, Jeffery 1 Boyer, Stephanie 2 McDonald, Rashelle 1 Hoon Lee 3; Email Address: hoonjoo_lee@ncsu.edu; Affiliation: 1: Air Force Research Laboratory, 139 Barnes Drive Tyndall AFB 32403 USA 2: United States Air Force Academy, USAFA, Colorado Springs 80840 USA 3: North Carolina State University, 2401 Research Drive Raleigh 27695 USA; Source Info: Apr2011, Vol. 46 Issue 8, p2503; Subject Term: HYDROPHOBIC surfaces; Subject Term: MICROWAVES; Subject Term: NYLON; Subject Term: COTTON textiles; Subject Term: NANOCHEMISTRY; Subject Term: ABSORPTION; Subject Term: EVAPORATION (Chemistry); NAICS/Industry Codes: 313220 Narrow Fabric Mills and Schiffli Machine Embroidery; NAICS/Industry Codes: 313110 Fiber, Yarn, and Thread Mills; Number of Pages: 7p; Illustrations: 2 Black and White Photographs, 2 Diagrams, 4 Charts, 1 Graph; Document Type: Article L3 - 10.1007/s10853-010-5100-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57529958&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zherebtsov, S.V. AU - Dyakonov, G.S. AU - Salem, A.A. AU - Malysheva, S.P. AU - Salishchev, G.A. AU - Semiatin, S.L. T1 - Evolution of grain and subgrain structure during cold rolling of commercial-purity titanium JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2011/04/15/ VL - 528 IS - 9 M3 - Article SP - 3474 EP - 3479 SN - 09215093 AB - Abstract: The evolution of microstructure in commercial-purity titanium during cold rolling to a thickness strain of 2.6 was quantified using electron backscatter diffraction. The measurements were analyzed in terms of the mean grain size and the density of boundaries (the ratio of total boundary length to the scanned area). The density of high-angle boundaries as a function of thickness strain had three distinct stages, each of which was associated with a different mechanism of microstructure formation, i.e., (i) twinning, (ii) an increase in dislocation density and the formation of substructure, and (iii) the formation of deformation-induced high-angle boundaries. The influence of twinning on the kinetics of microstructure evolution was also interpreted. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Cold working KW - MOLECULAR structure KW - ROLLING (Metalwork) KW - TITANIUM KW - MICROSTRUCTURE KW - STRAINS & stresses (Mechanics) KW - ELECTRONS -- Backscattering KW - TWINNING (Crystallography) KW - Cold rolling KW - EBSD KW - Grain refinement KW - Microstructure KW - Titanium KW - Twinning N1 - Accession Number: 58541002; Zherebtsov, S.V. 1; Email Address: ser_z@mail.ru Dyakonov, G.S. 1 Salem, A.A. 2,3 Malysheva, S.P. 4 Salishchev, G.A. 1 Semiatin, S.L. 2; Affiliation: 1: Laboratory of Bulk Nanostructured Materials, Belgorod State University, Pobeda – 85, Belgorod, 308015, Russia 2: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, OH 45433-7817, USA 3: Universal Technology Corporation, Dayton, OH 45432, USA 4: Institute for Metals Superplasticity Problems RAS, Khalturin 39, Ufa, 450001, Russia; Source Info: Apr2011, Vol. 528 Issue 9, p3474; Subject Term: METALS -- Cold working; Subject Term: MOLECULAR structure; Subject Term: ROLLING (Metalwork); Subject Term: TITANIUM; Subject Term: MICROSTRUCTURE; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ELECTRONS -- Backscattering; Subject Term: TWINNING (Crystallography); Author-Supplied Keyword: Cold rolling; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: Grain refinement; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Titanium; Author-Supplied Keyword: Twinning; NAICS/Industry Codes: 331221 Rolled Steel Shape Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 331410 Nonferrous Metal (except Aluminum) Smelting and Refining; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331491 Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331315 Aluminum Sheet, Plate, and Foil Manufacturing; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.msea.2011.01.039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58541002&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li Cao AU - Sahu, Sushant AU - Anilkumar, Parambath AU - Bunker, Christopher E. AU - Juan Xu AU - Shiral Fernando, K. A. AU - Ping Wang AU - Guliants, Elena A. AU - Tackett, II, Kenneth N. AU - Ya-Ping Sun T1 - Carbon Nanoparticles as Visible-Light Photocatalysts for Efficient CO2 Conversion and Beyond. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2011/04/06/ VL - 133 IS - 13 M3 - Article SP - 4754 EP - 4757 SN - 00027863 AB - Increasing atmospheric CO2 levels have generated much concern, driving the ongoing carbon sequestration effort. A compelling CO2 sequestration option is its photocatalytic conversion to hydrocarbons, for which the use of solar irradiation represents an ultimate solution. Here we report a new strategy of using surface-functionalized small carbon nanoparticles to harvest visible photons for subsequent charge separation on the particle surface in order to drive the efficient photocatalytic process. The aqueous solubility of the catalysts enables photoreduction under more desirable homogeneous reaction conditions. Beyond CO2 conversion, the nanoscale carbon-based photocatalysts are also useful for the photogeneration of H2 from water under similar conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON compounds KW - NANOPARTICLES KW - PHOTOCATALYSIS KW - IRRADIATION KW - PHOTONS N1 - Accession Number: 62807817; Li Cao 1 Sahu, Sushant 1 Anilkumar, Parambath 1 Bunker, Christopher E. 2; Email Address: syaping@clemson.edu Juan Xu 1 Shiral Fernando, K. A. 3 Ping Wang 1 Guliants, Elena A. 3 Tackett, II, Kenneth N. 1 Ya-Ping Sun 1; Email Address: christopher.bunker@wpafb.af.mil; Affiliation: 1: Department of Chemistry and Laboratory for Emerging Materials and Technology, Clemson University, Clemson, South Carolina 29634, United States 2: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, United States 3: Sensors Technology Office, University of Dayton Research Institute, Dayton, Ohio 45469, United States; Source Info: 4/6/2011, Vol. 133 Issue 13, p4754; Subject Term: CARBON compounds; Subject Term: NANOPARTICLES; Subject Term: PHOTOCATALYSIS; Subject Term: IRRADIATION; Subject Term: PHOTONS; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1021/ja200804h UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62807817&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gongyi Hong AU - Ivnitski, Dmitri M. AU - Johnson, Glenn R. AU - Atanassov, Plamen AU - Pachter, Ruth T1 - Design Parameters for Tuning the Type 1 Cu Multicopper Oxidase Redox Potential: Insight from a Combination of First Principles and Empirical Molecular Dynamics Simulations. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2011/04/06/ VL - 133 IS - 13 M3 - Article SP - 4802 EP - 4809 SN - 00027863 AB - The redox potentials and reorganization energies of the type 1 (T1) Cu site in four multicopper oxidases were calculated by combining first principles density functional theory (QM) and QM/MM molecular dynamics (MD) simulations. The model enzymes selected included the laccase from Trametes versicolor, the laccase-like enzyme isolated from Bacillus subtilis, CueO required for copper homeostasis in Escherichia coli, and the small laccase (SLAC) from Streptomyces coelicolor. The results demonstrated good agreement with experimental data and provided insight into the parameters that influence the T1 redox potential. Effects of the immediate T1 Cu site environment, including the His(Nδ)-Cys(S)-His(Nδ) and the axial coordinating amino acid, as well as the proximate H(N)backbone-SCys hydrogen bond, were discerned. Furthermore, effects of the protein backbone and side-chains, as well as of the aqueous solvent, were studied by QM/MM molecular dynamics (MD) simulations, providing an understanding of influences beyond the T1 Cu coordination sphere. Suggestions were made regarding an increase of the T1 redox potential in SLAC, i.e., of Met198 and Thr232 in addition to the axial amino acid Met298. Finally, the results of this work presented a framework for understanding parameters that influence the Type 1 Cu MCO redox potential, useful for an ever-growing range of laccase-based applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXIDASES KW - MOLECULAR dynamics KW - OXIDATION-reduction reaction KW - BACILLUS subtilis KW - DENSITY functionals N1 - Accession Number: 62807828; Gongyi Hong 1,2 Ivnitski, Dmitri M. 3 Johnson, Glenn R. 4 Atanassov, Plamen 3 Pachter, Ruth 1; Email Address: Ruth.Pachter@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, United States 2: General Dynamics Information Technology, Inc., University of New Mexico, Albuquerque, New Mexico 87131, United States 3: Chemical & Nuclear Engineering Department, University of New Mexico, Albuquerque, New Mexico 87131, United States 4: Air Force Research Laboratory, Materials & Manufacturing Directorate, Tyndall Air Force Base, Florida 3240, United States; Source Info: 4/6/2011, Vol. 133 Issue 13, p4802; Subject Term: OXIDASES; Subject Term: MOLECULAR dynamics; Subject Term: OXIDATION-reduction reaction; Subject Term: BACILLUS subtilis; Subject Term: DENSITY functionals; Number of Pages: 8p; Document Type: Article L3 - 10.1021/ja105586q UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62807828&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Trizila, Pat AU - Chang-Kwon Kang AU - Aono, Hikaru AU - Wei Shyy AU - Visbal, Miguel T1 - Low-Reynolds-Number Aerodynamics of Flapping Rigid Flat Plate. JO - AIAA Journal JF - AIAA Journal Y1 - 2011/04// VL - 49 IS - 4 M3 - Article SP - 806 EP - 823 SN - 00011452 AB - Two- and three-dimensional low-aspect-ratio (AR = 4) hovering airfoil/wing aerodynamics at a low Reynolds number (Re = 100) are numerically investigated. Regarding fluid physics, in addition to the well-known leading-edge vortex and wake-capture mechanisms, a persistent jet, induced by the shed vortices in the wake during previous strokes, and tip vortices can significantly influence the lift and power performance. While in classical stationary wing theory the tip vortices are seen as wasted energy, here, they can interact with the leading-edge vortex to contribute to the lift generated without increasing the power requirements. Using surrogate modeling techniques, the two- and three-dimensional time-averaged aerodynamic forces were predicted well over a large range of kinematic motions when compared with the Navier-Stokes solutions. The combined effects of tip vortices, leading-edge vortex, and jet can be manipulated by the choice of kinematics to make a three-dimensional wing aerodynamically better or worse than an infinitely long wing. The environmental sensitivity during hovering for select kinematics is also examined. Different freestream strengths and orientations are imposed, with the impact on vortex generation and wake interaction investigated. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMIC load KW - AERODYNAMICS KW - REYNOLDS number KW - VISCOUS flow KW - KINEMATICS N1 - Accession Number: 59969044; Trizila, Pat 1 Chang-Kwon Kang 1 Aono, Hikaru 1 Wei Shyy 1; Email Address: weishyy@umich.edu Visbal, Miguel 2; Affiliation: 1: University of Michigan, Ann Arbor, Michigan 48109 2: U.S. Air Force Research Laboratory Wright-Patterson Air Force Base, Ohio 45433; Source Info: Apr2011, Vol. 49 Issue 4, p806; Subject Term: AERODYNAMIC load; Subject Term: AERODYNAMICS; Subject Term: REYNOLDS number; Subject Term: VISCOUS flow; Subject Term: KINEMATICS; Number of Pages: 18p; Illustrations: 1 Diagram, 2 Charts, 18 Graphs; Document Type: Article L3 - 10.2514/1.J050827 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59969044&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beran, Philip AU - Stanford, Bret T1 - Conceptual Design of Compliant Mechanisms for Flapping Wings with Topology Optimization. JO - AIAA Journal JF - AIAA Journal Y1 - 2011/04// VL - 49 IS - 4 M3 - Article SP - 855 EP - 867 SN - 00011452 AB - This work discusses the integration of two previously disparate research areas: topology optimization of compliant mechanisms and flapping wing vehicles. The efficient actuation of the latter is considerably challenging, with competing weight, energy, and authority requirements; intuitive design strategies are not typically available for the aeroelastic physics that define the flapping system. We discuss the incorporation of these physics into a gradient-based topological optimization scheme, to design thrust-optimal compliant flapping mechanisms. This is done with a nonlinear dynamical finite element model incorporating both the mechanism and the wing structure, coupling elastic, inertial, aerodynamic, and actuator forces. Several optimal mechanism topologies are presented, along with a detailed discussion of the relevant flapping physics driving the design process. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TOPOLOGY KW - GEOMETRY KW - AERODYNAMICS KW - FLUID dynamics KW - PHYSICS N1 - Accession Number: 59969047; Beran, Philip 1 Stanford, Bret 1; Email Address: bret.stnfordd@wpafb.af.mil; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Apr2011, Vol. 49 Issue 4, p855; Subject Term: TOPOLOGY; Subject Term: GEOMETRY; Subject Term: AERODYNAMICS; Subject Term: FLUID dynamics; Subject Term: PHYSICS; Number of Pages: 13p; Illustrations: 8 Diagrams, 6 Charts, 6 Graphs; Document Type: Article L3 - 10.2514/1.J050940 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59969047&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, Rahul AU - Reppert, Jason AU - Podila, Ramakrishna AU - Zhang, Xianfeng AU - Rao, Apparao M. AU - Talapatra, Saikat AU - Maruyama, Benji T1 - Double resonance Raman study of disorder in CVD-grown single-walled carbon nanotubes JO - Carbon JF - Carbon Y1 - 2011/04// VL - 49 IS - 4 M3 - Article SP - 1318 EP - 1325 SN - 00086223 AB - Abstract: Single-walled carbon nanotubes (SWCNTs) with varying degrees of disorder were investigated using multiple-excitation Raman spectroscopy. The lattice disorder was imparted into the nanotubes by the addition of varying amounts of sulfur to the iron catalyst in a thermal chemical vapor deposition process. Changes in the intensities of peaks occurring due to a double resonance Raman process were studied. The intensity of the disorder-induced D band increased with a decrease in the sulfur content. Upon post-synthesis heat treatment, the double resonance process got quenched due to defect healing. The second order G′ band and iTOLA bands exhibited a two-peak structure, of which one of the peaks is relatively more sensitive to defects and decreased in intensity with heat treatment. [ABSTRACT FROM AUTHOR] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - MOLECULAR structure KW - RAMAN spectroscopy KW - CHEMICAL vapor deposition KW - HEAT treatment KW - IRON catalysts KW - INORGANIC compounds -- Synthesis N1 - Accession Number: 57372670; Rao, Rahul 1; Email Address: rahul.rao@wpafb.af.mil Reppert, Jason 2 Podila, Ramakrishna 2 Zhang, Xianfeng 3 Rao, Apparao M. 2 Talapatra, Saikat 3 Maruyama, Benji 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, RXBN, Wright-Patterson AFB, OH 45433, United States 2: Department of Physics and Astronomy, and COMSET, Clemson University, Clemson, SC, 29634, United States 3: Department of Physics, Southern Illinois University Carbondale, IL, 62901, United States; Source Info: Apr2011, Vol. 49 Issue 4, p1318; Subject Term: CARBON nanotubes; Subject Term: MOLECULAR structure; Subject Term: RAMAN spectroscopy; Subject Term: CHEMICAL vapor deposition; Subject Term: HEAT treatment; Subject Term: IRON catalysts; Subject Term: INORGANIC compounds -- Synthesis; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.carbon.2010.11.052 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57372670&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pickett, Brent M. AU - Burnette, Parren F. AU - Wells, Steven P. AU - Sullivan, Patrick D. AU - Hawk, John R. T1 - Fire safety tests comparing synthetic jet and diesel fuels with JP-8 JO - Fire Safety Journal JF - Fire Safety Journal Y1 - 2011/04// VL - 46 IS - 3 M3 - Article SP - 89 EP - 95 SN - 03797112 AB - Abstract: Experimental fire tests have been performed on various fuels derived both from a petroleum source and from a synthetic source via a Fischer–Tropsch process. Multiple fire tests were performed for each fuel type as well as fuel blends of conventional and synthetic fuels using aqueous film-forming foam on a liquid pool fire following a prescribed military specification, MIL-F-24385F. Using the current U.S. Air Force jet fuel (JP-8) as a baseline comparison, the synthetic fuels or blends showed no significant difference in extinguishment times. Burnback times showed larger values for some of the synthetic fuels or blends when compared to JP-8, indicating improved safety for these synthetic fuels or blends. [Copyright &y& Elsevier] AB - Copyright of Fire Safety Journal is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIRE prevention KW - SYNTHETIC fuels KW - JET planes -- Fuel KW - DIESEL fuels KW - FIRE testing KW - FIRE extinguishers KW - KEROSENE KW - PETROLEUM KW - COMPARATIVE studies KW - Burnback KW - Fire extinguishment KW - JP-8 KW - Military specification MIL-F-24385F KW - Pool fire KW - Synthetic paraffinic kerosene N1 - Accession Number: 58096877; Pickett, Brent M. 1; Email Address: bmpicke@yahoo.com Burnette, Parren F. 2; Email Address: parren.burnette@tyndall.af.mil Wells, Steven P. 2; Email Address: steven.wells@tyndall.af.mil Sullivan, Patrick D. 1; Email Address: patrick.sullivan@tyndall.af.mil Hawk, John R. 1; Email Address: john.hawk@tyndall.af.mil; Affiliation: 1: Air Force Research Laboratory, 139 Barnes Drive, Suite 2, Tyndall AFB, FL 32403, USA 2: Applied Research Associates, P.O. Box 40128, Tyndall AFB, FL 32403, USA; Source Info: Apr2011, Vol. 46 Issue 3, p89; Subject Term: FIRE prevention; Subject Term: SYNTHETIC fuels; Subject Term: JET planes -- Fuel; Subject Term: DIESEL fuels; Subject Term: FIRE testing; Subject Term: FIRE extinguishers; Subject Term: KEROSENE; Subject Term: PETROLEUM; Subject Term: COMPARATIVE studies; Author-Supplied Keyword: Burnback; Author-Supplied Keyword: Fire extinguishment; Author-Supplied Keyword: JP-8; Author-Supplied Keyword: Military specification MIL-F-24385F; Author-Supplied Keyword: Pool fire; Author-Supplied Keyword: Synthetic paraffinic kerosene; NAICS/Industry Codes: 454319 Other fuel dealers; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 412110 Petroleum and petroleum products merchant wholesalers; NAICS/Industry Codes: 339999 All Other Miscellaneous Manufacturing; NAICS/Industry Codes: 423990 Other Miscellaneous Durable Goods Merchant Wholesalers; NAICS/Industry Codes: 424720 Petroleum and Petroleum Products Merchant Wholesalers (except Bulk Stations and Terminals); NAICS/Industry Codes: 424710 Petroleum Bulk Stations and Terminals; NAICS/Industry Codes: 486110 Pipeline Transportation of Crude Oil; NAICS/Industry Codes: 211111 Crude Petroleum and Natural Gas Extraction; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.firesaf.2010.11.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58096877&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shakir, Sami A. AU - Motes, Raymond Andrew AU - Berdine, Richard W. T1 - Efficient Scalar Beam Propagation Method. JO - IEEE Journal of Quantum Electronics JF - IEEE Journal of Quantum Electronics Y1 - 2011/04// VL - 47 IS - 4 M3 - Article SP - 486 EP - 491 SN - 00189197 AB - The beam propagation method developed here is based on expanding the field and the refractive index distributions with a Fourier series in the azimuthal direction, thus replacing a 3-D wave equation with a small number of 2-D wave equations. The method is shown to be substantially faster than standard 3-D finite-difference methods and has comparable level of accuracy. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Journal of Quantum Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GIRDERS KW - REFRACTIVE index KW - FOURIER series KW - WAVE equation KW - FINITE differences KW - ACCURACY KW - Beam propagation in cylindrical coordinates KW - Boundary conditions KW - Couplings KW - finite-difference beam propagation method KW - Multicore processing KW - optical fiber KW - Optical refraction KW - Optical variables control KW - Optimized production technology KW - photonics modeling KW - propagation of electromagnetic waves KW - Refractive index N1 - Accession Number: 62559993; Shakir, Sami A. 1 Motes, Raymond Andrew 2 Berdine, Richard W. 2; Affiliation: 1: TASC Inc., Albuquerque, NM, USA 2: Air Force Research Laboratory, Albuquerque, NM, USA; Source Info: Apr2011, Vol. 47 Issue 4, p486; Subject Term: GIRDERS; Subject Term: REFRACTIVE index; Subject Term: FOURIER series; Subject Term: WAVE equation; Subject Term: FINITE differences; Subject Term: ACCURACY; Author-Supplied Keyword: Beam propagation in cylindrical coordinates; Author-Supplied Keyword: Boundary conditions; Author-Supplied Keyword: Couplings; Author-Supplied Keyword: finite-difference beam propagation method; Author-Supplied Keyword: Multicore processing; Author-Supplied Keyword: optical fiber; Author-Supplied Keyword: Optical refraction; Author-Supplied Keyword: Optical variables control; Author-Supplied Keyword: Optimized production technology; Author-Supplied Keyword: photonics modeling; Author-Supplied Keyword: propagation of electromagnetic waves; Author-Supplied Keyword: Refractive index; Number of Pages: 6p; Document Type: Article L3 - 10.1109/JQE.2010.2091395 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62559993&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Taylor, Clark N. AU - Veth, Michael J. AU - Raquet, John F. AU - Miller, Mikel M. T1 - Comparison of Two Image and Inertial Sensor Fusion Techniques for Navigation in Unmapped Environments. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2011/04//04/01/2011 VL - 47 IS - 2 M3 - Article SP - 946 EP - 958 SN - 00189251 AB - To enable navigation of miniature aerial vehicles (MAVs) with a low-quality inertial measurement unit (IMU), external sensors are typically fused with the information generated by the low-quality IMU. Most commercial systems for MAVs currently fuse GPS measurements with IMU information to navigate the MAV. However there are many scenarios in which an MAV might prove useful, but GPS is not available (e.g., indoors, urban terrain, etc.). Therefore several approaches have recently been introduced that couple information from an IMU with visual information (usually captured by an electro-optical camera). In general the methods for fusing visual information with an IMU utilizes one of two techniques: 1) applying rigid body constraints on where landmarks should appear in a set of two images (constraint-based fusion) or 2) simultaneously estimating the location of features that are observed by the camera (mapping) and the location of the camera (simultaneous localization and mapping—SLAM-based fusion). While each technique has some nuances associated with its implementation in a true MAV environment (i.e., computational requirements, real-time implementation, feature tracking, etc.), this paper focuses solely on answering the question "Which fusion technique (constraint- or SLAM-based) enables more accurate long-term MAV navigation?" To answer this question, specific implementations of a constraint- and SLAM-based fusion technique, with novel modifications for improved results on MAVs, are described. A basic simulation environment is used to perform a comparison of the constraint- and SLAM-based fusion methods. We demonstrate the superiority of SLAM-based techniques in specific MAV flight scenarios and discuss the relative weaknesses and strengths of each fusion approach. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INERTIAL confinement fusion KW - NAVIGATION (Aeronautics) KW - DRONE aircraft KW - GLOBAL Positioning System KW - CONSTRAINT satisfaction (Artificial intelligence) KW - IMAGE processing KW - COMPUTER simulation KW - ANALYSIS of variance N1 - Accession Number: 60217274; Taylor, Clark N. 1 Veth, Michael J. 2 Raquet, John F. 3 Miller, Mikel M.; Affiliation: 1: Brigham Young University 2: Air Force Institute of Technology 3: Air Force Research Laboratory; Source Info: 04/01/2011, Vol. 47 Issue 2, p946; Subject Term: INERTIAL confinement fusion; Subject Term: NAVIGATION (Aeronautics); Subject Term: DRONE aircraft; Subject Term: GLOBAL Positioning System; Subject Term: CONSTRAINT satisfaction (Artificial intelligence); Subject Term: IMAGE processing; Subject Term: COMPUTER simulation; Subject Term: ANALYSIS of variance; NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 812922 One-Hour Photofinishing; Number of Pages: 0p; Document Type: Article L3 - 10.1109/TAES.2011.5751236 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60217274&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heller, Eric R. AU - Vetury, Rama AU - Green, Daniel S. T1 - Development of a Versatile Physics-Based Finite-Element Model of an AlGaN/GaN HEMT Capable of Accommodating Process and Epitaxy Variations and Calibrated Using Multiple DC Parameters. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices Y1 - 2011/04//04/01/2011 VL - 58 IS - 4 M3 - Article SP - 1091 EP - 1095 SN - 00189383 AB - We present a physics-based finite-element model of operation of an AlGaN/GaN HEMT with device geometry inputs taken from transmission electron microscope cross sections and calibrated by comparison with measured electrical data comprising standard field-effect transistor metrics and less well-known model parameters. A variety of electrical outputs from the model are compared to experiment, and the level of agreement is reported. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MODULATION-doped field-effect transistors KW - ALUMINUM compounds KW - GALLIUM nitride KW - FINITE element method KW - DATA modeling KW - TRANSMISSION electron microscopes KW - DIRECT currents KW - Aluminum gallium nitride KW - Data models KW - Device model KW - field-effect transistor (FET) KW - Gallium nitride KW - GaN KW - GaN/AlGaN KW - HEMTs KW - high-electron mobility transistor (HEMT) KW - Logic gates KW - Mathematical model KW - model calibration KW - model characterization KW - modulation-doped field effect transistor (MODFET) KW - Semiconductor device modeling N1 - Accession Number: 59470959; Heller, Eric R. 1 Vetury, Rama 2 Green, Daniel S. 3; Affiliation: 1: Materials Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base , OH, USA 2: Defense and Power Business Unit RF Micro Devices, Charlotte, NC, USA 3: Office of Naval Research, Arlington, VA, USA; Source Info: 04/01/2011, Vol. 58 Issue 4, p1091; Subject Term: MODULATION-doped field-effect transistors; Subject Term: ALUMINUM compounds; Subject Term: GALLIUM nitride; Subject Term: FINITE element method; Subject Term: DATA modeling; Subject Term: TRANSMISSION electron microscopes; Subject Term: DIRECT currents; Author-Supplied Keyword: Aluminum gallium nitride; Author-Supplied Keyword: Data models; Author-Supplied Keyword: Device model; Author-Supplied Keyword: field-effect transistor (FET); Author-Supplied Keyword: Gallium nitride; Author-Supplied Keyword: GaN; Author-Supplied Keyword: GaN/AlGaN; Author-Supplied Keyword: HEMTs; Author-Supplied Keyword: high-electron mobility transistor (HEMT); Author-Supplied Keyword: Logic gates; Author-Supplied Keyword: Mathematical model; Author-Supplied Keyword: model calibration; Author-Supplied Keyword: model characterization; Author-Supplied Keyword: modulation-doped field effect transistor (MODFET); Author-Supplied Keyword: Semiconductor device modeling; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TED.2011.2107913 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59470959&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gilgenbach, Ronald M. AU - Lau, Yue-Ying AU - French, David M. AU - Hoff, Brad W. AU - Franzi, Matthew AU - Luginsland, John T1 - Recirculating Planar Magnetrons for High-Power High-Frequency Radiation Generation. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2011/04//04/01/2011 VL - 39 IS - 4 M3 - Article SP - 980 EP - 987 SN - 00933813 AB - We present designs and simulations of a new class of magnetron, the recirculating planar magnetron. This magnetron has numerous advantages as a high-power microwave generator, including larger cathode and anode area, fast start-up, and compact microwave extraction geometry. The following two geometries are demonstrated by electromagnetic particle-in-cell codes: 1) axial magnetic field with radial electric field and 2) radial magnetic field with axial electric field. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - CATHODES KW - CAVITY resonators KW - ELECTROMAGNETISM KW - SIMULATION methods & models KW - MAGNETIC fields KW - ELECTRIC fields KW - Anodes KW - Cathodes KW - Cavity resonators KW - Crossed-field-device KW - Electromagnetic heating KW - Geometry KW - Load modeling KW - magnetron KW - Magnetrons KW - relativistic magnetron N1 - Accession Number: 59954405; Gilgenbach, Ronald M. 1 Lau, Yue-Ying 1 French, David M. 1 Hoff, Brad W. 2 Franzi, Matthew 1 Luginsland, John 3; Affiliation: 1: Plasma, Pulsed Power, and Microwave Laboratory, University of Michigan, Ann Arbor, MI, USA 2: High Power Microwave Division, Directed Energy Directorate, Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, USA 3: Air Force Office of Scientific Research, Arlington, VA, USA; Source Info: 04/01/2011, Vol. 39 Issue 4, p980; Subject Term: MAGNETRONS; Subject Term: CATHODES; Subject Term: CAVITY resonators; Subject Term: ELECTROMAGNETISM; Subject Term: SIMULATION methods & models; Subject Term: MAGNETIC fields; Subject Term: ELECTRIC fields; Author-Supplied Keyword: Anodes; Author-Supplied Keyword: Cathodes; Author-Supplied Keyword: Cavity resonators; Author-Supplied Keyword: Crossed-field-device; Author-Supplied Keyword: Electromagnetic heating; Author-Supplied Keyword: Geometry; Author-Supplied Keyword: Load modeling; Author-Supplied Keyword: magnetron; Author-Supplied Keyword: Magnetrons; Author-Supplied Keyword: relativistic magnetron; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TPS.2010.2099670 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59954405&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dahlstrom, Nicklas AU - Nahlinder, Staffan AU - Wilson, Glenn F. AU - Svensson, Erland T1 - Recording of Psychophysiological Data During Aerobatic Training. JO - International Journal of Aviation Psychology JF - International Journal of Aviation Psychology Y1 - 2011/04//Apr-Jun2011 VL - 21 IS - 2 M3 - Article SP - 105 EP - 122 PB - Taylor & Francis Ltd SN - 10508414 AB - Measuring pilot mental workload can be important for understanding cognitive demands during flight involving unusual movements and attitudes. Data on heart rate, eye movements, EEG, and subjective ratings from 7 flight instructors were collected for a flight including a repeated aerobatics sequence. Heart rate data and subjective ratings showed that aerobatic sequences produced the highest levels of mental workload and that heart rate can identify low-G flight segments with high mental workload. Blink rate and eye movement data did not support previous research regarding their relation to mental workload. EEG data were difficult to analyze due to muscle artifacts. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aviation Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STUNT flying KW - FLIGHT training KW - PSYCHOPHYSIOLOGY KW - COGNITIVE Abilities Test KW - DEFENSE mechanisms (Psychology) KW - MENTAL work KW - HEART beat KW - ELECTROENCEPHALOGRAPHY N1 - Accession Number: 59754914; Dahlstrom, Nicklas 1 Nahlinder, Staffan 2 Wilson, Glenn F. 3 Svensson, Erland 2; Affiliation: 1: Lund University School of Aviation, Ljungbyhed, Sweden 2: Swedish Defence Research Agency, Stockholm, Sweden 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, USA; Source Info: Apr-Jun2011, Vol. 21 Issue 2, p105; Subject Term: STUNT flying; Subject Term: FLIGHT training; Subject Term: PSYCHOPHYSIOLOGY; Subject Term: COGNITIVE Abilities Test; Subject Term: DEFENSE mechanisms (Psychology); Subject Term: MENTAL work; Subject Term: HEART beat; Subject Term: ELECTROENCEPHALOGRAPHY; NAICS/Industry Codes: 611512 Flight Training; Number of Pages: 18p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1080/10508414.2011.556443 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59754914&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wells, Timothy S. AU - Miller, Shannon C. AU - Adler, Amy B. AU - Engel, Charles C. AU - Smith, Tyler C. AU - Fairbank, John A. T1 - Mental health impact of the Iraq and Afghanistan conflicts: A review of US research, service provision, and programmatic responses. JO - International Review of Psychiatry JF - International Review of Psychiatry Y1 - 2011/04// VL - 23 IS - 2 M3 - Article SP - 144 EP - 152 PB - Routledge SN - 09540261 AB - Although documentation that war inflicts psychological casualties dates back to the American Civil War and earlier, most research began after the Vietnam conflict, when studies focused on post-traumatic stress disorder (PTSD). With ongoing conflicts in Iraq and Afghanistan, there has been significant research to illuminate the epidemiology of war-related psychological casualties. Significant findings include an appreciation for the role combat plays in the development of mental disorders, including PTSD and traumatic brain injury (TBI). Recent research has endeavoured to understand and improve psychological resilience to temper potentially adverse mental health effects of military service in the theatre of combat operations. Over 2 million US service members have now deployed and returned over 3 million times to the Iraq and Afghanistan conflicts. Mental health providers in the Departments of Defense and Veterans Affairs healthcare systems have consequently observed steep increases in mental health service use among these personnel. The Departments have responded aggressively to bolster staffing levels, increase capacity, improve available services, and anticipate future needs. Scientists and clinicians continue efforts to understand the determinants, prevention, recognition, and treatment of combat-related mental disorders. [ABSTRACT FROM AUTHOR] AB - Copyright of International Review of Psychiatry is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MENTAL health KW - PATHOLOGICAL psychology KW - MENTAL illness KW - AFGHANISTAN KW - IRAQ N1 - Accession Number: 60231379; Wells, Timothy S. 1; Email Address: timothy.wells@med.navy.mil Miller, Shannon C. 2,3 Adler, Amy B. 4 Engel, Charles C. 5,6 Smith, Tyler C. 1 Fairbank, John A. 7,8; Affiliation: 1: Center for Deployment Health Research, Naval Health Research Center, San Diego, California. 2: Vulnerability Analysis Branch,United States Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, Veterans Affairs Medical Center, Cincinnati, Ohio, USA. 3: Center for Treatment, Research, and Education in Addictive Disorders at University of Cincinnati Department of Psychiatry and Behavioral Neuroscience, Cincinnati, Ohio, USA. 4: US Army Medical Research Unit-Europe, Walter Reed Army Institute of Research, Heidelberg, Germany. 5: Department of Psychiatry, Uniformed Services University, Bethesda, MD, USA. 6: Deployment Health Clinical Center, Walter Reed Army Institute of Research, Washington, DC, USA. 7: Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, North Carolina, USA. 8: Mid-Atlantic (VISN 6) Mental Illness Research, Education and Clinical Center, Durham, North Carolina, USA.; Source Info: Apr2011, Vol. 23 Issue 2, p144; Subject Term: MENTAL health; Subject Term: PATHOLOGICAL psychology; Subject Term: MENTAL illness; Subject Term: AFGHANISTAN; Subject Term: IRAQ; NAICS/Industry Codes: 621330 Offices of Mental Health Practitioners (except Physicians); Number of Pages: 9p; Document Type: Article L3 - 10.3109/09540261.2011.558833 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60231379&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Arritt, B. J. AU - Smith, D. R. AU - Khraishi, T. T1 - Equivalent circuit analysis of metamaterial strain-dependent effective medium parameters. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/04// VL - 109 IS - 7 M3 - Article SP - 073512 EP - 073512-5 PB - American Institute of Physics SN - 00218979 AB - In this paper, we analytically describe the strain-dependent effective medium properties for a metamaterial electric-LC (ELC) resonator, commonly used in metamaterial designs to provide a tailored electric response to electromagnetic waves. Combining an equivalent circuit model of the ELC resonator with existing analytic expressions for the capacitive and inductive regions comprising the structure, we obtain strain-dependent permittivity and permeability curves for the metamaterial. The derived expressions account for the effects of spatial dispersion and losses. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUIDS KW - OPTICS KW - RESONATORS KW - EVOKED response audiometry KW - ELECTROMAGNETIC waves N1 - Accession Number: 86445400; Arritt, B. J. 1,2 Smith, D. R. 3 Khraishi, T. 2; Affiliation: 1: Air Force Research Laboratory/Space Vehicles Directorate, Kirtland AFB, New Mexico 87117, 2: Mechanical Engineering Department, University of New Mexico, Albuquerque, New Mexico 87131, 3: Center for Metamaterials and Integrated Plasmonics and Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708,; Source Info: Apr2011, Vol. 109 Issue 7, p073512; Subject Term: FLUIDS; Subject Term: OPTICS; Subject Term: RESONATORS; Subject Term: EVOKED response audiometry; Subject Term: ELECTROMAGNETIC waves; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.3569742 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86445400&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, C. H. AU - Lin, S. AU - Horwath, J. C. AU - Hoff, B. W. AU - Haworth, M. D. AU - Heidger, S. L. T1 - Effect of surrounding air region size on finite element modeling for permanent magnetic solenoids. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/04// VL - 109 IS - 7 M3 - Article SP - 07A757 EP - 07A757-3 PB - American Institute of Physics SN - 00218979 AB - Magnetostatic finite element modeling of permanent magnetic devices can provide accurate results only if the underlying physics is well captured in the model. A single device surrounded by an air padding region is the focus of this research. In the ideal modeling case, this padding region would be infinite in extent. Since an infinite padding region is impossible to implement, the padding sizes in modeling a permanent magnetic solenoid that can ensure accurate results were analyzed in our study. The relationship between accuracy of the simulation result and the surrounding air padding percentage in terms of the device size is demonstrated in this paper, which shows that physically impossible results can occur for a permanent magnetic solenoid if an insufficient padding percentage is used. Design engineers typically use padding percentages from 40 - 400%, and our results show that the required padding percentage depends on the openness of the magnetic circuit. A permanent magnetic solenoid may have more or less openness of the magnetic circuit when the magnetic vector of the side magnets has a larger or smaller angle β1. For a more open magnetic circuit with β1 near 90°, a higher padding percentage, up to 600%, is required. For a less open magnetic circuit with β1 ≤ 30°, 200% padding is recommended for better accuracy. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLENOIDS KW - MAGNETS KW - MAGNETIC devices KW - FINITE element method KW - ELECTRIC circuits N1 - Accession Number: 86445164; Chen, C. H. 1,2 Lin, S. 3 Horwath, J. C. 4 Hoff, B. W. 5 Haworth, M. D. 5 Heidger, S. L. 5; Affiliation: 1: University of Dayton, Dayton, Ohio 45469, 2: GE Global Research, Niskayuna, New York 12309, 3: ANSYS, Pittsburgh, Pennsylvania 15219, 4: Air Force Research Laboratory, Wright Patterson AFB, Ohio 45432, 5: Air Force Research Laboratory, Kirtland AFB, New Mexico 87117,; Source Info: Apr2011, Vol. 109 Issue 7, p07A757; Subject Term: SOLENOIDS; Subject Term: MAGNETS; Subject Term: MAGNETIC devices; Subject Term: FINITE element method; Subject Term: ELECTRIC circuits; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.3540410 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86445164&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Knutson, S. J. AU - Shen, Y. AU - Horwath, J. C. AU - Barnes, P. AU - Chen, C. H. T1 - The effect of flake thickness on anisotropic SmCo5 nanoflakes/submicron-flakes with high energy product. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/04// VL - 109 IS - 7 M3 - Article SP - 07A762 EP - 07A762-3 PB - American Institute of Physics SN - 00218979 AB - Establishing an effective process to synthesize anisotropic magnetic nanopowders that have both high energy products and high coercivity is highly desirable for many applications. A recent effort using surfactant-assisted high energy milling is proved to be capable of making SmCo5 nanoflakes/submicron-flakes with high performance. Using the cast alloy as a starting powder, a series of the flakes with various thicknesses were made, which had energy product values up to 22 MGOe and coercivity values up to 21 kOe. The highest coercivity corresponds to a typical flake thickness of 180 nm. The key to our technique is retaining the crystallinity, which allows a high degree of anisotropy to be produced. Results of the analyses from the micrograph of SEM, XRD patterns, and magnetic measurements demonstrate the effect of flake thickness on the magnetic properties. More importantly, a relationship of property-morphology correlation in nanoscale is established for rare earth magnetic powder/flakes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - NANOFABRICS KW - SURFACE active agents KW - MILLING (Metalwork) KW - CRYOGENIC grinding N1 - Accession Number: 86445159; Knutson, S. J. 1 Shen, Y. 1 Horwath, J. C. 2 Barnes, P. 2 Chen, C. H. 1,3; Affiliation: 1: University of Dayton, Dayton, Ohio 45469, 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, 3: GE Global Research, Niskayuna, New York 12309; Source Info: Apr2011, Vol. 109 Issue 7, p07A762; Subject Term: NANOPARTICLES; Subject Term: NANOFABRICS; Subject Term: SURFACE active agents; Subject Term: MILLING (Metalwork); Subject Term: CRYOGENIC grinding; NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.3556922 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86445159&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shen, Y. AU - Turgut, Z. AU - Horwath, J. AU - Huang, M. T1 - Bulk nanocomposite LaCo5/LaCo13 magnets. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/04// VL - 109 IS - 7 M3 - Article SP - 07A765 EP - 07A765-3 PB - American Institute of Physics SN - 00218979 AB - The effects of processing parameters and composition on the magnetic properties and microstructure of nanocrystalline La-Co based hard magnetic materials were investigated. Bulk nanocomposite LaCo5/LaCo13 magnets were fabricated by mechanical alloying of LaCo5 and La2Co7 powder mixtures and subsequent hot pressing at 580-810 °C. A high coercive field (Hc) of over 16 kOe with a smooth demagnetization curve was obtained in a composition range of 25-30 wt. % La2Co7 when hot-pressed at 660-760 °C. Microstructural investigations indicated that the magnets consist of a primary LaCo5 phase with grain sizes of 200-400 nm, coexisting with 20-100 nm grains of LaCo13 located both at the grain boundaries and within the hard LaCo5 grains. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOCOMPOSITE materials KW - MAGNETIC properties KW - HOT pressing KW - ALLOYS KW - DEMAGNETIZATION N1 - Accession Number: 86445156; Shen, Y. 1 Turgut, Z. 2 Horwath, J. 3 Huang, M. 2; Affiliation: 1: Magnetics Laboratory, University of Dayton, Dayton, Ohio 45469, 2: UES Inc, AFRL, 4401 Dayton-xenia RD, Dayton, Ohio 45432, 3: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433,; Source Info: Apr2011, Vol. 109 Issue 7, p07A765; Subject Term: NANOCOMPOSITE materials; Subject Term: MAGNETIC properties; Subject Term: HOT pressing; Subject Term: ALLOYS; Subject Term: DEMAGNETIZATION; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.3562446 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86445156&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucas, M. S. AU - Mauger, L. AU - Muñoz, J. A. AU - Xiao, Yuming AU - Sheets, A. O. AU - Semiatin, S. L. AU - Horwath, J. AU - Turgut, Z. T1 - Magnetic and vibrational properties of high-entropy alloys. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/04// VL - 109 IS - 7 M3 - Article SP - 07E307 EP - 07E307-3 PB - American Institute of Physics SN - 00218979 AB - The magnetic properties of high-entropy alloys based on equimolar FeCoCrNi were investigated using vibrating sample magnetometry to determine their usefulness in high-temperature magnetic applications. Nuclear resonant inelastic x-ray scattering measurements were performed to evaluate the vibrational entropy of the 57Fe atoms and to infer chemical order. The configurational and vibrational entropy of alloying are discussed as they apply to these high-entropy alloys. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC properties KW - X-ray scattering KW - ALLOYS KW - MAGNETOMETERS KW - ENTROPY N1 - Accession Number: 86444654; Lucas, M. S. 1,2 Mauger, L. 3 Muñoz, J. A. 3 Xiao, Yuming 4 Sheets, A. O. 1 Semiatin, S. L. 1 Horwath, J. 1 Turgut, Z. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 2: UTC Inc., 1270 North Fairfield Road, Dayton, Ohio 45432, 3: California Institute of Technology, W. M. Keck Laboratory 138-78, Pasadena, California 91125, 4: HPCAT, Geophysical Laboratory, Carnegie Institute of Washington, Argonne, Illinois 60439,; Source Info: Apr2011, Vol. 109 Issue 7, p07E307; Subject Term: MAGNETIC properties; Subject Term: X-ray scattering; Subject Term: ALLOYS; Subject Term: MAGNETOMETERS; Subject Term: ENTROPY; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 1p; Illustrations: 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.3538936 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86444654&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gerald J. Wilmink AU - Bennett L. Ibey AU - Thomas Tongue AU - Brian Schulkin AU - Norman Laman AU - Xomalin G. Peralta AU - Caleb C. Roth AU - Cesario Z. Cerna AU - Benjamin D. Rivest AU - Jessica E. Grundt AU - William P. Roach T1 - Development of a compact terahertz time-domain spectrometer for the measurement of the optical properties of biological tissues. JO - Journal of Biomedical Optics JF - Journal of Biomedical Optics Y1 - 2011/04// VL - 16 IS - 4 M3 - Article SP - 047006 EP - 047006-10 SN - 10833668 AB - Terahertz spectrometers and imaging systems are currently being evaluated as biomedical tools for skin burn assessment. These systems show promise, but due to their size and weight, they have restricted portability, and are impractical for military and battlefield settings where space is limited. In this study, we developed and tested the performance of a compact, light, and portable THz time-domain spectroscopy (THz-TDS) device. Optical properties were collected with this system from 0.1 to 1.6 THz for water, ethanol, and several ex vivoporcine tissues (muscle, adipose, skin). For all samples tested, we found that the index of refraction (n) decreases with frequency, while the absorption coefficient (a) increases with frequency. Muscle, adipose, and frozenthawed skin samples exhibited comparable nvalues ranging between 2.5 and 2.0, whereas the nvalues for freshly harvested skin were roughly 40 lower. Additionally, we found that the freshly harvested samples exhibited higher avalues than the frozenthawed skin samples. Overall, for all liquids and tissues tested, we found that our system measured optical property values that were consistent with those reported in the literature. These results suggest that our compact THz spectrometer performed comparable to its larger counterparts, and therefore may be a useful and practical tool for skin health assessment. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Biomedical Optics is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TERAHERTZ spectroscopy KW - MEASUREMENT KW - OPTICAL properties KW - TISSUES KW - IMAGING systems in medicine KW - SKIN N1 - Accession Number: 60378169; Gerald J. Wilmink 1 Bennett L. Ibey 1 Thomas Tongue 1 Brian Schulkin 1 Norman Laman 1 Xomalin G. Peralta 1 Caleb C. Roth 1 Cesario Z. Cerna 1 Benjamin D. Rivest 1 Jessica E. Grundt 1 William P. Roach 1; Affiliation: 1: Air Force Research Laboratory, 711 Human Performance Wing, Human Effectiveness Directorate, Radio Frequency Radiation Branch, 8262 Hawks Road, Brooks City-Base, Texas 78235; Source Info: Apr2011, Vol. 16 Issue 4, p047006; Subject Term: TERAHERTZ spectroscopy; Subject Term: MEASUREMENT; Subject Term: OPTICAL properties; Subject Term: TISSUES; Subject Term: IMAGING systems in medicine; Subject Term: SKIN; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60378169&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Xihui Dong AU - Gardner, Paul AU - Reitz, Thomas L. AU - Huang, Kevin AU - Chen, Fanglin T1 - Strontium- and Manganese-Doped Lanthanum Gallate as a Potential Anode Material for Intermediate-Temperature Solid Oxide Fuel Cells. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2011/04// VL - 94 IS - 4 M3 - Article SP - 1114 EP - 1118 PB - Wiley-Blackwell SN - 00027820 AB - Sr- and Mn-doped LaGaO3 (La0.8Sr0.2Ga0.5Mn0.5O3-δ, LSGMn) has been synthesized using a glycine nitrate combustion method. Powder X-ray diffraction examinations show that the synthesized LSGMn has a pure single cubic perovskite phase. Four-probe direct current conductivity characterization indicates that the conductivity of the sintered LSGMn in wet H2 is lower than that in air, whereas the activation energy in wet H2 is higher than that in air. Such an expected p-type conduction mechanism is the result of the valence change of Mn, which enables LSGMn to be a mixed ionic and electronic conductor. Using LSGMn as an anode and LSCF as a cathode, the peak power density at 800°C of the LSGM electrolyte supported all-perovskite cells can reach 460 mW/cm² using wet H2 as fuel and ambient air as an oxidant. Further, LSGMn anode has showed reasonable sulfur tolerance in H2-containing 100 ppm H2S and the all-perovskite cell has demonstrated good performance stability in the short-term operation at a constant cell voltage of 0.7 V. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GLYCINE KW - NITRATES KW - COMBUSTION KW - ELECTRIC conductivity KW - PEROVSKITE N1 - Accession Number: 59702034; Xihui Dong 1 Gardner, Paul 2 Reitz, Thomas L. 2 Huang, Kevin 1 Chen, Fanglin 1; Email Address: chenfa@cec.sc.edu; Affiliation: 1: Department of Mechanical Engineering, University of South Carolina, Columbia, South Carolina 29208. 2: Propulsion Directorate, Air Force Research Laboratory, Dayton, Ohio 45433.; Source Info: Apr2011, Vol. 94 Issue 4, p1114; Subject Term: GLYCINE; Subject Term: NITRATES; Subject Term: COMBUSTION; Subject Term: ELECTRIC conductivity; Subject Term: PEROVSKITE; Number of Pages: 5p; Illustrations: 1 Black and White Photograph, 2 Diagrams, 6 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2010.04221.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59702034&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harrowell, Peter AU - Fernandez, Julian R. AU - Miracle, D. B. T1 - The chemically ordered glass: the limiting composition for chemical order in amorphous packings of hard-sphere mixtures. JO - Molecular Simulation JF - Molecular Simulation Y1 - 2011/04// VL - 37 IS - 4 M3 - Article SP - 293 EP - 298 SN - 08927022 AB - We consider the limits of chemical order (i.e. avoidance of solute-solute contact) in amorphous close-packed mixtures of hard spheres of two different sizes. The upper bound on the solute concentration, beyond which solute-solute contact cannot be avoided, is determined for a range of particle size ratios. Scaling the composition by this limiting value is found to collapse plots of the solute coordination and mixture energies as a function of composition for different values of size ratios onto a single master curve. A number of features of the behaviour of amorphous alloys in the vicinity of this limiting concentration are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Simulation is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AMORPHOUS substances KW - ALLOYS KW - GLASS transition temperature KW - SCALING laws (Statistical physics) KW - CONTACT mechanics KW - FORCE & energy KW - amorphous alloys KW - glass transition KW - random close packing N1 - Accession Number: 59652932; Harrowell, Peter 1 Fernandez, Julian R. 2 Miracle, D. B. 3; Affiliation: 1: School of Chemistry, University of Sydney, New South Wales, Australia 2: Comision Nacional de Energia Atomica, Buenos Aires, Argentina 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Dayton, OH, USA; Source Info: Apr2011, Vol. 37 Issue 4, p293; Subject Term: AMORPHOUS substances; Subject Term: ALLOYS; Subject Term: GLASS transition temperature; Subject Term: SCALING laws (Statistical physics); Subject Term: CONTACT mechanics; Subject Term: FORCE & energy; Author-Supplied Keyword: amorphous alloys; Author-Supplied Keyword: glass transition; Author-Supplied Keyword: random close packing; Number of Pages: 6p; Illustrations: 2 Diagrams, 2 Charts, 6 Graphs; Document Type: Article L3 - 10.1080/08927022.2010.548386 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59652932&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Xu, Guibao AU - Sun, Guan AU - Ding, Yujie J. AU - Zotova, Ioulia B. AU - Mandal, Krishna C. AU - Mertiri, Alket AU - Pabst, Gary AU - Fernelius, Nils T1 - Investigation of symmetries of second-order nonlinear susceptibility tensor of GaSe crystals in THz domain JO - Optics Communications JF - Optics Communications Y1 - 2011/04// VL - 284 IS - 7 M3 - Article SP - 2027 EP - 2030 SN - 00304018 AB - Abstract: Following our measurements and analysis made on several GaSe crystals, we demonstrated that terahertz (THz) generation from ultrafast laser pulses can be developed into a sensitive technique for investigating symmetries of second-order nonlinear susceptibility tensor of a nonlinear crystal. Indeed, for GaSe crystals, both Kleinman''s symmetry condition and spatial symmetry were violated due to the contribution of ionic displacement to nonlinear polarization and deviation of GaSe lattice from hexagonal symmetry. When the pump photon energy was increased from that below the bandgap of GaSe to that above it, the mechanism for the THz generation was switched from optical rectification to photocurrent surge. [Copyright &y& Elsevier] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALS KW - BROKEN symmetry (Physics) KW - TERAHERTZ technology KW - PHOTOCONDUCTIVITY KW - OPTICAL polarization KW - ENERGY gaps (Physics) KW - NONLINEAR optics KW - CALCULUS of tensors KW - SYMMETRY (Mathematics) KW - GaSe KW - Kleinman's symmetry condition KW - Optical rectification KW - Photocurrent surge KW - Spatial symmetry KW - THz generation N1 - Accession Number: 58099455; Xu, Guibao 1 Sun, Guan 1 Ding, Yujie J. 1; Email Address: yud2@lehigh.edu Zotova, Ioulia B. 2 Mandal, Krishna C. 3 Mertiri, Alket 4 Pabst, Gary 4 Fernelius, Nils 5; Affiliation: 1: Department of Electrical and Computer Engineering, Lehigh University, Bethlehem, PA 18015, USA 2: ArkLight, P.O. Box 2, Center Valley, PA 18034, USA 3: Department of Electrical Engineering, University of South Carolina, Columbia, SC 29208, USA 4: EIC Laboratories, Inc., Norwood, MA 02062, USA 5: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Apr2011, Vol. 284 Issue 7, p2027; Subject Term: CRYSTALS; Subject Term: BROKEN symmetry (Physics); Subject Term: TERAHERTZ technology; Subject Term: PHOTOCONDUCTIVITY; Subject Term: OPTICAL polarization; Subject Term: ENERGY gaps (Physics); Subject Term: NONLINEAR optics; Subject Term: CALCULUS of tensors; Subject Term: SYMMETRY (Mathematics); Author-Supplied Keyword: GaSe; Author-Supplied Keyword: Kleinman's symmetry condition; Author-Supplied Keyword: Optical rectification; Author-Supplied Keyword: Photocurrent surge; Author-Supplied Keyword: Spatial symmetry; Author-Supplied Keyword: THz generation; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.optcom.2010.12.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58099455&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, C. AU - Luhmann, J. AU - Hoeksema, J. AU - Sun, X. AU - Arge, C. AU - Pater, I. T1 - Coronal Field Opens at Lower Height During the Solar Cycles 22 and 23 Minimum Periods: IMF Comparison Suggests the Source Surface Should Be Lowered. JO - Solar Physics JF - Solar Physics Y1 - 2011/04// VL - 269 IS - 2 M3 - Article SP - 367 EP - 388 PB - Springer Science & Business Media B.V. SN - 00380938 AB - The solar cycle 23 minimum period has been characterized by a weaker solar and interplanetary magnetic field. This provides an ideal time to study how the strength of the photospheric field affects the interplanetary magnetic flux and, in particular, how much the observed interplanetary fields of different cycle minima can be understood simply from differences in the areas of the coronal holes, as opposed to differences in the surface fields within them. In this study, we invoke smaller source surface radii in the potential-field source-surface (PFSS) model to construct a consistent picture of the observed coronal holes and the near-Earth interplanetary field strength as well as polarity measurements for the cycles 23 and 22 minimum periods. Although the source surface value of 2.5 R is typically used in PFSS applications, earlier studies have shown that using smaller source surface heights generates results that better match observations during low solar activity periods. We use photospheric field synoptic maps from Mount Wilson Observatory (MWO) and find that the values of ≈ 1.9 R and ≈ 1.8 R for the cycles 22 and 23 minimum periods, respectively, produce the best results. The larger coronal holes obtained for the smaller source surface radius of cycle 23 somewhat offsets the interplanetary consequences of the lower magnetic field at their photospheric footpoints. For comparison, we also use observations from the Michelson Doppler Imager (MDI) and find that the source surface radius of ≈ 1.5 R produces better results for cycle 23, rather than ≈ 1.8 R as suggested from MWO observations. Despite this difference, our results obtained from MWO and MDI observations show a qualitative consistency regarding the origins of the interplanetary field and suggest that users of PFSS models may want to consider using these smaller values for their source surface heights as long as the solar activity is low. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR cycle KW - SOLAR magnetic fields KW - MAGNETIC flux KW - INTERPLANETARY magnetic fields KW - SOLAR photosphere KW - ASTRONOMICAL observatories KW - SOLAR corona KW - SUN KW - Corona, models KW - Coronal holes KW - Magnetic field, interplanetary KW - Magnetic field, observations KW - Solar cycle, observations N1 - Accession Number: 59316754; Lee, C.; Email Address: clee@ssl.berkeley.edu Luhmann, J. 1 Hoeksema, J. 2 Sun, X. 2 Arge, C. 3 Pater, I. 4; Affiliation: 1: Space Sciences Laboratory, University of California, Berkeley USA 2: W. W. Hansen Experimental Physics Laboratory, Stanford University, Stanford USA 3: Air Force Research Laboratory/Space Vehicles Directorate, Kirtland Air Force Base USA 4: Department of Earth and Planetary Science, University of California, Berkeley USA; Source Info: Apr2011, Vol. 269 Issue 2, p367; Subject Term: SOLAR cycle; Subject Term: SOLAR magnetic fields; Subject Term: MAGNETIC flux; Subject Term: INTERPLANETARY magnetic fields; Subject Term: SOLAR photosphere; Subject Term: ASTRONOMICAL observatories; Subject Term: SOLAR corona; Subject Term: SUN; Author-Supplied Keyword: Corona, models; Author-Supplied Keyword: Coronal holes; Author-Supplied Keyword: Magnetic field, interplanetary; Author-Supplied Keyword: Magnetic field, observations; Author-Supplied Keyword: Solar cycle, observations; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; Number of Pages: 22p; Illustrations: 2 Diagrams, 14 Graphs; Document Type: Article L3 - 10.1007/s11207-010-9699-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59316754&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Teodoro, João S. AU - Simões, Anabela M. AU - Duarte, Filipe V. AU - Rolo, Anabela P. AU - Murdoch, Richard C. AU - Hussain, Saber M. AU - Palmeira, Carlos M. T1 - Assessment of the toxicity of silver nanoparticles in vitro: A mitochondrial perspective JO - Toxicology in Vitro JF - Toxicology in Vitro Y1 - 2011/04// VL - 25 IS - 3 M3 - Article SP - 664 EP - 670 SN - 08872333 AB - Abstract: The major toxicological concern associated with nanomaterials is the fact that some manufactured nanomaterials are redox active, and some particles transport across cell membranes, especially into mitochondria. Thus, evaluation of their toxicity upon acute exposure is essential. In this work, we evaluated the toxicity of silver nanoparticles (40 and 80nm) and their effects in rat liver mitochondria bioenergetics. Wistar rat liver mitochondria demonstrate alterations in respiration and membrane potential capacities in the presence of either 40 or 80nm silver nanoparticles. Our data demonstrated a statistically significant decrease in mitochondrial membrane potential, ADP-induced depolarization, and respiratory control ratio (RCR) upon exposure to silver nanoparticles. Our results show that silver nanoparticles cause impairment of mitochondrial function, due mainly to alterations of mitochondrial membrane permeability. This results in an uncoupling effect on the oxidative phosphorylation system. Thus, mitochondrial toxicity may have a central role in the toxicity resulting from exposure to silver nanoparticles. [Copyright &y& Elsevier] AB - Copyright of Toxicology in Vitro is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLOIDAL silver KW - METALS -- Toxicology KW - NANOSTRUCTURED materials KW - MANUFACTURES KW - CELL membranes KW - MITOCHONDRIA KW - BIOENERGETICS KW - PHOSPHORYLATION KW - Bioenergetics KW - Mitochondria KW - Mitochondrial toxicity KW - Silver nanoparticles N1 - Accession Number: 58746890; Teodoro, João S. 1 Simões, Anabela M. 1 Duarte, Filipe V. 1 Rolo, Anabela P. 1 Murdoch, Richard C. 2 Hussain, Saber M. 2 Palmeira, Carlos M. 1; Email Address: palmeira@ci.uc.pt; Affiliation: 1: Center for Neurosciences and Cell Biology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal 2: 711th Human Performance Wing, Applied Biotechnology Branch, RHPB Air Force Research Laboratory, Wright Patterson AFB, Dayton, OH, USA; Source Info: Apr2011, Vol. 25 Issue 3, p664; Subject Term: COLLOIDAL silver; Subject Term: METALS -- Toxicology; Subject Term: NANOSTRUCTURED materials; Subject Term: MANUFACTURES; Subject Term: CELL membranes; Subject Term: MITOCHONDRIA; Subject Term: BIOENERGETICS; Subject Term: PHOSPHORYLATION; Author-Supplied Keyword: Bioenergetics; Author-Supplied Keyword: Mitochondria; Author-Supplied Keyword: Mitochondrial toxicity; Author-Supplied Keyword: Silver nanoparticles; NAICS/Industry Codes: 339999 All Other Miscellaneous Manufacturing; NAICS/Industry Codes: 339990 All other miscellaneous manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.tiv.2011.01.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58746890&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Markovsky, P.E. AU - Semiatin, S.L. T1 - Tailoring of microstructure and mechanical properties of Ti–6Al–4V with local rapid (induction) heat treatment JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2011/03/25/ VL - 528 IS - 7/8 M3 - Article SP - 3079 EP - 3089 SN - 09215093 AB - Abstract: The evolution of microstructure during local rapid (induction) heat treatment (LRHT) and its effect on the tension and fatigue properties of Ti–6Al–4V with an initial microstructure of fine-grain equiaxed alpha or coarse-grain colony alpha were investigated. LRHT of material with an initial equiaxed condition formed a graded microstructure that varied from a fully transformed one at the surface to a bimodal (equiaxed/transformed) one at the center. After final aging (LRHTA), such a material was characterized by an attractive blend of tension and fatigue properties (UTS=1285MPa, elongation=6.3%, endurance limit 710MPa). An analysis of the dependence of mechanical properties on the volume fraction of heat-treated material revealed that LRHTA processing to 50% transformed in the critical cross section (from point of view of maximum applied loading) gave a balance of tensile properties similar to those obtained via bulk (100%) rapid heat treatment of Ti–6Al–4V. In contrast, the LRHTA of Ti–6Al–4V with a coarse-grain colony-alpha preform condition required longer heating times to refine the structure and provided only a modest improvement in mechanical properties. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Mechanical properties KW - METALS -- Heat treatment KW - TITANIUM alloys KW - MICROSTRUCTURE KW - SURFACE tension KW - MATERIALS -- Fatigue KW - STRENGTH of materials KW - Fatigue properties KW - Local rapid (induction) heat treatment KW - Microstructure KW - Tensile properties KW - Titanium alloy N1 - Accession Number: 57859223; Markovsky, P.E. 1; Email Address: pmark@imp.kiev.ua Semiatin, S.L. 2; Affiliation: 1: G.V. Kurdyumov Institute for Metal Physics, Department of Strength and Ductility of Inhomogeneous Systems, 36 Vernadsky Blvd, 03142 Kyiv, Ukraine 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Source Info: Mar2011, Vol. 528 Issue 7/8, p3079; Subject Term: MATERIALS -- Mechanical properties; Subject Term: METALS -- Heat treatment; Subject Term: TITANIUM alloys; Subject Term: MICROSTRUCTURE; Subject Term: SURFACE tension; Subject Term: MATERIALS -- Fatigue; Subject Term: STRENGTH of materials; Author-Supplied Keyword: Fatigue properties; Author-Supplied Keyword: Local rapid (induction) heat treatment; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Tensile properties; Author-Supplied Keyword: Titanium alloy; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.msea.2010.12.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57859223&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Delaire, Olivier AU - Marty, Karol AU - Stone, Matthew B. AU - Kent, Paul R. C. AU - Lucas, Matthew S. AU - Abernathy, Douglas L. AU - Mandrus, David AU - Sales, Brian C. T1 - Phonon softening and metallization of a narrow-gap semiconductor by thermal disorder. JO - Proceedings of the National Academy of Sciences of the United States of America JF - Proceedings of the National Academy of Sciences of the United States of America Y1 - 2011/03/22/ VL - 108 IS - 12 M3 - Article SP - 4725 EP - 4730 SN - 00278424 AB - The vibrations of ions in solids at finite temperature depend on interatomic force-constants that result from electrostatic interactions between ions, and the response of the electron density to atomic displacements. At high temperatures, vibration amplitudes are substantial, and electronic states are affected, thus modifying the screening properties of the electron density. By combining inelastic neutron scattering measurements of Fe1-xCoxSi as a function of temperature, and finite-temperature first-principles calculations including thermal disorder effects, we show that the coupling between phonons and electronic structure results in an anomalous temperature dependence of phonons. The strong concomitant renormalization of the electronic structure induces the semiconductor-to-metal transition that occurs with increasing temperature in FeSi. Our results show that for systems with rapidly changing electronic densities of states at the Fermi level, there are likely to be significant phonon-electron interactions, resulting in anomalous temperature-dependent properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Proceedings of the National Academy of Sciences of the United States of America is the property of National Academy of Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON distribution KW - VIBRATIONAL spectra KW - ELECTRON mobility KW - SOLID state physics KW - ELECTRONIC structure KW - electron-phonon coupling KW - metal-insulator transition KW - thermoelectrics N1 - Accession Number: 59741361; Delaire, Olivier 1; Email Address: delaireoa@ornl.gov Marty, Karol 1 Stone, Matthew B. 1 Kent, Paul R. C. 1 Lucas, Matthew S. 2 Abernathy, Douglas L. 1 Mandrus, David 1 Sales, Brian C. 1; Affiliation: 1: Oak Ridge National Laboratory, 1, Bethel Valley Road, Oak Ridge, TN 37831 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433; Source Info: 3/22/2011, Vol. 108 Issue 12, p4725; Subject Term: ELECTRON distribution; Subject Term: VIBRATIONAL spectra; Subject Term: ELECTRON mobility; Subject Term: SOLID state physics; Subject Term: ELECTRONIC structure; Author-Supplied Keyword: electron-phonon coupling; Author-Supplied Keyword: metal-insulator transition; Author-Supplied Keyword: thermoelectrics; Number of Pages: 6p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1073/pnas.1014869108 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59741361&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Petersen, Eliot B. AU - Shi, Wei AU - Chavez-Pirson, Arturo AU - Peyghambarian, N. AU - Cooney, Adam T. T1 - Efficient parametric terahertz generation in quasi-phase-matched GaP through cavity enhanced difference-frequency generation. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2011/03/21/ VL - 98 IS - 12 M3 - Article SP - 121119 PB - American Institute of Physics SN - 00036951 AB - We report an efficient parametric terahertz (THz) source by using bonded quasi-phase-matched (QPM) GaP crystals pumped by the C-band pulsed fiber lasers in a master oscillator power amplifier configuration, based on difference frequency generation (DFG). We observed that the QPM-GaP crystals can effectively increase the THz generation power and efficiency by increasing the number of periods. Moreover, we observed external cavity enhanced THz DFG by placing the QPM-GaP crystal in an external ring cavity. The THz cavity enhancement factor of approximately 250 has been achieved in comparison with a single-pass THz DFG. The maximum THz average power can reach 339 μW, corresponding to a power conversion efficiency of 2.43×10-4 and a quantum efficiency of 3.16%. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TERAHERTZ spectroscopy KW - CRYSTALLIZATION KW - LASERS KW - ELECTRIC oscillators KW - POWER amplifiers KW - QUANTUM efficiency (Physics) KW - ENERGY conversion N1 - Accession Number: 59586606; Petersen, Eliot B. 1,2 Shi, Wei 1 Chavez-Pirson, Arturo 1 Peyghambarian, N. 1,3 Cooney, Adam T. 4; Affiliation: 1: NP Photonics Inc., 9030 S Rita Rd., Tucson, Arizona 85747, 2: Physics Department, University of Arizona, Tucson, Arizona 85721, 3: College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, 4: Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433,; Source Info: 3/21/2011, Vol. 98 Issue 12, p121119; Subject Term: TERAHERTZ spectroscopy; Subject Term: CRYSTALLIZATION; Subject Term: LASERS; Subject Term: ELECTRIC oscillators; Subject Term: POWER amplifiers; Subject Term: QUANTUM efficiency (Physics); Subject Term: ENERGY conversion; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.3571550 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59586606&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Herbold, Eric B. AU - Thadhani, Naresh N. AU - Jordan, Jennifer L. T1 - Observation of a minimum reaction initiation threshold in ball-milled Ni+Al under high-rate mechanical loading. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/03/15/ VL - 109 IS - 6 M3 - Article SP - 066108 PB - American Institute of Physics SN - 00218979 AB - Two types of microstructurally distinct ball-milled Ni+Al powder compacts are characterized for the investigation of reaction initiation threshold under high-rate mechanical loading using a modified rod-on-anvil Taylor impact-test setup. It is observed that the kinetic energy threshold for reaction decreases to a minimum then increases with milling time. It is also observed that the kinetic energy required for reaction initiation is lower for the 95% theoretical maximum density (TMD) ball-milled powder compacts than for the 65% theoretical maximum density (TMD) compacts. The results are discussed on the basis of competing effects of reactivity enhancement and deformability reduction caused by prior ball-milling of the powder mixtures. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BALL mills KW - NICKEL KW - ALUMINUM KW - CHEMICAL reactions KW - POWDERS N1 - Accession Number: 59744298; Herbold, Eric B. 1; Email Address: herbold1@llnl.gov Thadhani, Naresh N. 1 Jordan, Jennifer L. 2; Affiliation: 1: School of Materials Science and Engineering, Georgia Institute of Technology, Love Manufacturing Building, 771 Ferst Drive, Atlanta, Georgia 30332, USA 2: High Explosives Research and Development Branch, Munitions Directorate, Air Force Research Laboratory, Eglin AFB, Florida 32542, USA; Source Info: Mar2011, Vol. 109 Issue 6, p066108; Subject Term: BALL mills; Subject Term: NICKEL; Subject Term: ALUMINUM; Subject Term: CHEMICAL reactions; Subject Term: POWDERS; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 3p; Illustrations: 2 Black and White Photographs, 1 Chart, 1 Graph; Document Type: Article L3 - 10.1063/1.3549822 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59744298&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Buguo AU - Callahan, Michael J. AU - Bouthillette, Lionel O. AU - Bliss, David F. AU - Look, David C. T1 - Electrical, optical, and analytical characterization of bulk hydrothermal ZnO crystals doped with indium JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2011/03/15/ VL - 319 IS - 1 M3 - Article SP - 1 EP - 3 SN - 00220248 AB - Abstract: Bulk In-doped ZnO crystals have been grown hydrothermally by adding In2O3 to the normal nutrient. The major growth occurs along the [10−10] direction rather than the usual [0001] and [000−1] directions; thus, a c-plane crystal has a plate-like shape. Secondary-ion mass spectroscopy (SIMS) measurements reveal an In concentration of about 1.6×1019 cm−3 in the bulk, with lesser amounts of Al (2.5×1018), Ga (1.8×1017), Fe (6.5×1018), and Li (1.1×1018). Low-temperature photoluminescence (PL) from the Zn face (0001) shows strong, relatively sharp donor-bound exciton (D°X) lines at 3.3609 and 3.3624eV, attributed to Al and H, respectively, along with much weaker lines at 3.29, 3.22eV, and 2.35eV, tentatively assigned, respectively, to a 1-LO-phonon replica of the D°X transitions, a donor–acceptor-pair transition, and the usual green band of unknown origin. The D°X-related PL from the O face (000−1) is much broader because of significantly higher In, Li, and Fe concentrations; however, it also includes a weak, sharp In°X line evidently emanating from the bulk region. The Hall-effect measurements in the range 15–320K reveal an unusual temperature variation of carrier concentration n, mobility μ, and resistivity ρ, namely the existence of two flat regions: (1) from 15 to 50K (n=7.8×1018 cm−3, μ=48cm2/Vs, and ρ=0.017Ωcm) and (2) from 250 to 320K (n=7.3×1018 cm−3, μ=83cm2/Vs, and ρ=0.010Ωcm). A mobility analysis based on degenerate electrons gives donor N D and acceptor N A concentrations of about 1.5×1019 and 7.5×1018 cm−3, respectively. Remarkably, within error, N D≈[In]+[Al]+[Ga] and N A≈[Fe]+[Li]. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALS -- Electric properties KW - CRYSTAL optics KW - ZINC oxide KW - INDIUM KW - SEMICONDUCTOR doping KW - CRYSTAL growth KW - SEMICONDUCTORS KW - ZINC compounds KW - OXIDES KW - PHOTOLUMINESCENCE KW - A1. Characterization KW - A1. Doping KW - A2. Hydrothermal crystal growth KW - B1. Oxides KW - B1. Zinc compounds KW - B2. Semiconducting II–VI materials N1 - Accession Number: 59328839; Wang, Buguo 1 Callahan, Michael J. 1 Bouthillette, Lionel O. 1 Bliss, David F. 2 Look, David C. 3; Email Address: david.look@wpafb.af.mil; Affiliation: 1: Solid State Scientific Corporation, 27-2 Wright Road, Hollis, NH 03049, USA 2: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA 3: Semiconductor Research Center, Wright State University, Dayton, OH 45435; Source Info: Mar2011, Vol. 319 Issue 1, p1; Subject Term: CRYSTALS -- Electric properties; Subject Term: CRYSTAL optics; Subject Term: ZINC oxide; Subject Term: INDIUM; Subject Term: SEMICONDUCTOR doping; Subject Term: CRYSTAL growth; Subject Term: SEMICONDUCTORS; Subject Term: ZINC compounds; Subject Term: OXIDES; Subject Term: PHOTOLUMINESCENCE; Author-Supplied Keyword: A1. Characterization; Author-Supplied Keyword: A1. Doping; Author-Supplied Keyword: A2. Hydrothermal crystal growth; Author-Supplied Keyword: B1. Oxides; Author-Supplied Keyword: B1. Zinc compounds; Author-Supplied Keyword: B2. Semiconducting II–VI materials; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.jcrysgro.2011.01.065 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59328839&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rebrov, Evgeny V. AU - Gao, Pengzhao AU - Verhoeven, Tiny M.W.G.M. AU - Schouten, Jaap C. AU - Kleismit, Richard AU - Turgut, Zafer AU - Kozlowski, Gregory T1 - Structural and magnetic properties of sol–gel Co2x Ni0.5−x Zn0.5−x Fe2O4 thin films JO - Journal of Magnetism & Magnetic Materials JF - Journal of Magnetism & Magnetic Materials Y1 - 2011/03/15/ VL - 323 IS - 6 M3 - Article SP - 723 EP - 729 SN - 03048853 AB - Abstract: Nanocrystalline Co2x Ni0.5−x Zn0.5−x Fe2O4 (x=0−0.5) thin films have been synthesized with various grain sizes by a sol–gel method on polycrystalline silicon substrates. The morphology as well as magnetic and microwave absorption properties of the films calcined at 1073K were studied using X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, and vibrating sample magnetometry. All films were uniform without microcracks. The Co content in the Co–Ni–Zn films resulted in a grain size ranging from 15 to 32nm while it ranged from 33 to 49nm in the corresponding powders. Saturation and remnant magnetization increased with increase in grain size, while coercivity demonstrated a drop due to multidomain behavior of crystallites for a given value of x. Saturation magnetization increased and remnant magnetization had a maximum as a function of grain size independent of x. In turn, coercivity increased with x independent of grain size. Complex permittivity of the Co–Ni–Zn ferrite films was measured in the frequency range 2–15GHz. The highest hysteretic heating rate in the temperature range 315–355K was observed in CoFe2O4. The maximum absorption band shifted from 13 to 11GHz as cobalt content increased from x=0.1 to 0.2. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Magnetism & Magnetic Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films -- Magnetic properties KW - NANOCRYSTALS KW - NICKEL compounds KW - POLYCRYSTALLINE semiconductors KW - SILICON KW - X-ray diffraction KW - SCANNING electron microscopy KW - Co–Ni–Zn ferrite KW - Hysteresis KW - Microwave absorption KW - Permittivity KW - Sol–gel method N1 - Accession Number: 57142020; Rebrov, Evgeny V. 1; Email Address: e.rebrov@qub.ac.uk Gao, Pengzhao 1 Verhoeven, Tiny M.W.G.M. 1 Schouten, Jaap C. 1 Kleismit, Richard 2 Turgut, Zafer 3 Kozlowski, Gregory 2; Affiliation: 1: Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands 2: Physics Department, Wright State University, Dayton, OH 45435, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Mar2011, Vol. 323 Issue 6, p723; Subject Term: THIN films -- Magnetic properties; Subject Term: NANOCRYSTALS; Subject Term: NICKEL compounds; Subject Term: POLYCRYSTALLINE semiconductors; Subject Term: SILICON; Subject Term: X-ray diffraction; Subject Term: SCANNING electron microscopy; Author-Supplied Keyword: Co–Ni–Zn ferrite; Author-Supplied Keyword: Hysteresis; Author-Supplied Keyword: Microwave absorption; Author-Supplied Keyword: Permittivity; Author-Supplied Keyword: Sol–gel method; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jmmm.2010.10.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57142020&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kichambare, Padmakar AU - Kumar, Jitendra AU - Rodrigues, Stanley AU - Kumar, Binod T1 - Electrochemical performance of highly mesoporous nitrogen doped carbon cathode in lithium–oxygen batteries JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2011/03/15/ VL - 196 IS - 6 M3 - Article SP - 3310 EP - 3316 SN - 03787753 AB - Abstract: Nitrogen doped carbon with a high surface area was used as cathode electrode in a solid-state lithium–oxygen battery. Various techniques including the Brunauer–Emmett–Teller (BET) surface area, X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX) were employed to evaluate the nitrogen functionality on carbon. The electrochemical properties of nitrogen doped carbon as cathode electrode in lithium–oxygen battery were studied using galvanostatic charge–discharge characteristics and electrochemical impedance spectroscopy (EIS). The lithium–oxygen cell fabricated with nitrogen doped Ketjenblack–Calgon activated carbon cathode exhibits two times higher discharge cell capacity than that of a cathode composed of only Ketjenblack–Calgon activated carbon. This work shows that the nitrogen functionality on carbon is responsible for the electro-catalytic activity of cathode and an enhancement in cell capacity of lithium–oxygen battery. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MESOPOROUS materials KW - ELECTROCHEMISTRY KW - NITROGEN KW - SEMICONDUCTOR doping KW - CARBON electrodes KW - CATHODES KW - LITHIUM-ion batteries KW - IMPEDANCE spectroscopy KW - ELECTROCATALYSIS KW - Discharge cell capacity KW - Electrochemical impedance spectroscopy KW - Lithium–air KW - Nitrogen doped mesoporous carbon KW - Solid-state lithium–oxygen battery N1 - Accession Number: 57371459; Kichambare, Padmakar 1 Kumar, Jitendra 2 Rodrigues, Stanley 1; Email Address: Stanley.Rodrigues@wpafb.af.mil Kumar, Binod 2; Affiliation: 1: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433-7252, United States 2: Electrochemical Power Group, University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0170, United States; Source Info: Mar2011, Vol. 196 Issue 6, p3310; Subject Term: MESOPOROUS materials; Subject Term: ELECTROCHEMISTRY; Subject Term: NITROGEN; Subject Term: SEMICONDUCTOR doping; Subject Term: CARBON electrodes; Subject Term: CATHODES; Subject Term: LITHIUM-ion batteries; Subject Term: IMPEDANCE spectroscopy; Subject Term: ELECTROCATALYSIS; Author-Supplied Keyword: Discharge cell capacity; Author-Supplied Keyword: Electrochemical impedance spectroscopy; Author-Supplied Keyword: Lithium–air; Author-Supplied Keyword: Nitrogen doped mesoporous carbon; Author-Supplied Keyword: Solid-state lithium–oxygen battery; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jpowsour.2010.11.112 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57371459&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, Danhong AU - Gumbs, Godfrey AU - Roslyak, O. T1 - Field-enhanced electron mobility by nonlinear phonon scattering of Dirac electrons in semiconducting graphene nanoribbons. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2011/03/15/ VL - 83 IS - 11 M3 - Article SP - 115405:1 EP - 115405:9 SN - 10980121 AB - The calculated electron mobility for a graphene nanoribbon as a function of applied electric field has been found to have a large threshold field for entering a nonlinear transport regime. This field depends on the lattice temperature, electron density, impurity scattering strength, nanoribbon width, and correlation length for the line-edge roughness. An enhanced electron mobility beyond this threshold has been observed, which is related to the initially-heated electrons in high energy states with a larger group velocity. However, this mobility enhancement quickly reaches a maximum due to the Fermi velocity in graphene and the dramatically increased phonon scattering. Superlinear and sublinear temperature dependence of mobility seen in the linear and nonlinear transport regimes. By analyzing the calculated nonequilibrium electron distribution function, this difference is attributed separately to the results of sweeping electrons from the right Fermi edge to the left one through the elastic scattering and moving electrons from low-energy states to high-energy ones through field-induced electron heating. The threshold field is pushed up by a decreased correlation length in the high-field regime and is further accompanied by a reduced magnitude in the mobility enhancement. This implies an anomalous high-field increase of the line-edge roughness scattering with decreasing correlation length due to the occupation of high-energy states by field-induced electron heating. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON mobility KW - ENERGY-band theory of solids KW - ELECTRIC fields KW - ELECTROMAGNETIC fields KW - FIELD theory (Physics) KW - THOMAS-Fermi theory N1 - Accession Number: 67045051; Huang, Danhong 1 Gumbs, Godfrey 2 Roslyak, O. 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA 2: Department of Physics and Astronomy, Hunter College of the City University of New York, 695 Park Avenue, New York, New York 10065, USA; Source Info: Mar2011, Vol. 83 Issue 11, p115405:1; Subject Term: ELECTRON mobility; Subject Term: ENERGY-band theory of solids; Subject Term: ELECTRIC fields; Subject Term: ELECTROMAGNETIC fields; Subject Term: FIELD theory (Physics); Subject Term: THOMAS-Fermi theory; Number of Pages: 9p; Document Type: Article L3 - 10.1103/PhysRevB.83.115405 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=67045051&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aliat, A. AU - Vedula, P. AU - Josyula, E. T1 - State-specific dissociation modeling with multiquantum vibration-translation transitions. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2011/03/15/ VL - 83 IS - 3-2 M3 - Article SP - 37301-1 EP - 37301-4 SN - 15393755 AB - An efficient state-specific model of dissociation using a quadrature approach is proposed by considering multiquantum vibration-translation (VT) transitions (between bound and quasibound vibrational levels) according to the forced harmonic oscillator theory. Application of this model to a pure N2 gas flow behind a plane shock wave shows that dissociation has a large influence on intermediate and higher vibrational levels and is characterized by state-specific incubation distances, before which VT energy exchanges remain the dominant mechanism just behind the shock. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSITION flow KW - DISSOCIATION (Chemistry) KW - VIBRATIONAL spectra KW - HARMONIC oscillators KW - GAS flow KW - SHOCK waves N1 - Accession Number: 83547663; Aliat, A. 1; Email Address: azizaliat@ou.edu Vedula, P. 1; Email Address: pvedula@ou.edu Josyula, E. 2; Affiliation: 1: School of Aerospace and Mechanical Engineering, University of Oklahoma, Norman, Oklahoma 73019, USA 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, USA; Source Info: Mar2011, Vol. 83 Issue 3-2, p37301-1; Subject Term: TRANSITION flow; Subject Term: DISSOCIATION (Chemistry); Subject Term: VIBRATIONAL spectra; Subject Term: HARMONIC oscillators; Subject Term: GAS flow; Subject Term: SHOCK waves; Number of Pages: 4p; Document Type: Article L3 - 10.1103/PhysRevE.83.037301 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83547663&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jansen, Ryan AU - Gimelshein, Natalia AU - Gimelshein, Sergey AU - Wysong, Ingrid T1 - A Lagrangian-Eulerian approach to modeling homogeneous condensation in high density gas expansions. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2011/03/14/ VL - 134 IS - 10 M3 - Article SP - 104105 PB - American Institute of Physics SN - 00219606 AB - A computational approach to homogeneous nucleation is proposed based on Eulerian description of the gas phase expansion coupled with a Lagrangian approach to the cluster formation. A continuum, Euler/Navier-Stokes solver versatile advection code is used to model the gas transport, and a kinetic particle solver is developed in this work to simulate cluster nucleation and growth. Parameters in the new model were adjusted so as to match the known theoretical dimer formation equilibrium constants for the two gases under consideration, argon and water. Reasonable agreement between computed and available experimental data was found in terminal cluster size distributions for nozzle water expansions in a wide range of stagnation pressures. The proposed approach was found to be orders of magnitude faster than a comparable approach based on the direct simulation Monte Carlo method. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAGRANGE equations KW - EXPANSION of gases KW - NUCLEATION KW - NAVIER-Stokes equations KW - ARGON KW - WATER KW - MONTE Carlo method N1 - Accession Number: 59294660; Jansen, Ryan 1 Gimelshein, Natalia 2 Gimelshein, Sergey 2 Wysong, Ingrid 3; Affiliation: 1: University of Southern California, Los Angeles, California 90089, 2: ERC, Inc., Edwards AFB, California 93524, 3: Air Force Research Laboratory, Edwards AFB, California 93524,; Source Info: 3/14/2011, Vol. 134 Issue 10, p104105; Subject Term: LAGRANGE equations; Subject Term: EXPANSION of gases; Subject Term: NUCLEATION; Subject Term: NAVIER-Stokes equations; Subject Term: ARGON; Subject Term: WATER; Subject Term: MONTE Carlo method; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1063/1.3562370 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59294660&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Justin Marshall T1 - New directions in the detection of polarized light. JO - Philosophical Transactions of the Royal Society B: Biological Sciences JF - Philosophical Transactions of the Royal Society B: Biological Sciences Y1 - 2011/03/12/ VL - 366 IS - 1565 M3 - Article SP - 615 EP - 616 SN - 09628436 N1 - Accession Number: 58537568; Justin Marshall 1; Affiliation: 1: The Queensland Brain Institute, University of Queensland, , Brisbane, Queensland 4072, Australia. Department of Biological Sciences, University of Maryland Baltimore County, , Baltimore, MD 21250, USA. Air Force Research Laboratory, Eglin Air Force Base, , FL 32542, USA; Source Info: Mar2011, Vol. 366 Issue 1565, p615; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58537568&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hong, Yan AU - Wu, Wei AU - Hu, Jianjun AU - Zhang, Minghui AU - Voevodin, Andrey A. AU - Chow, Louis AU - Su, Ming T1 - Controlling supercooling of encapsulated phase change nanoparticles for enhanced heat transfer JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2011/03/10/ VL - 504 IS - 4-6 M3 - Article SP - 180 EP - 184 SN - 00092614 AB - Abstract: Adding phase change nanoparticles into fluid enhances heat capacity, but supercooling of nanoparticles requires fluid working with large temperature difference, which limits heat transfer benefit. This Letter describes a method to reduce supercooling by encapsulating indium nanoparticles in non-melting shells of semi-crystalline silica derived from sodium silicate. Not only can the rough surface and matching structure of shells prevent molten cores from leakage or agglomeration, they allow heterogeneous nucleation during, solidification of nanoparticles and reduce supercooling up to 30°C. The operating parameter including overheating, heating and cooling rates can be adjusted to reduce supercooling by 7°C for silica shells derived from tetraethylorthosilicate. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCOOLING KW - HEAT transfer KW - NANOPARTICLES KW - SILICA KW - AGGLOMERATION (Materials) KW - NUCLEATION N1 - Accession Number: 59172848; Hong, Yan 1,2 Wu, Wei 2 Hu, Jianjun 3 Zhang, Minghui 4 Voevodin, Andrey A. 3 Chow, Louis 2 Su, Ming 1,2; Email Address: mingsu@mail.ucf.edu; Affiliation: 1: NanoScience Technology Center, University of Central Florida, Orlando, FL 32826, USA 2: Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, FL 32826, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA 4: Institute of New Catalytic Materials Science, College of Chemistry, Nankai University, Tianjin, 300071, PR China; Source Info: Mar2011, Vol. 504 Issue 4-6, p180; Subject Term: SUPERCOOLING; Subject Term: HEAT transfer; Subject Term: NANOPARTICLES; Subject Term: SILICA; Subject Term: AGGLOMERATION (Materials); Subject Term: NUCLEATION; NAICS/Industry Codes: 212210 Iron Ore Mining; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.cplett.2011.01.061 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59172848&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heckman, Emily M. AU - Aga, Roberto S. AU - Rossbach, Adam T. AU - Telek, Brian A. AU - Bartsch, Carrie M. AU - Grote, James G. T1 - DNA biopolymer conductive cladding for polymer electro-optic waveguide modulators. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2011/03/07/ VL - 98 IS - 10 M3 - Article SP - 103304 PB - American Institute of Physics SN - 00036951 AB - A deoxyribonucleic acid (DNA) biopolymer has been studied for use as a conductive cladding layer in polymer electro-optic (EO) waveguide modulators due to its low optical loss and high electrical conductivity relative to its inorganic polymer counterparts. Electric field contact poling measurements using a DNA biopolymer cladding layer with an amorphous polycarbonate/chromophore (APC/CLD1) guest-host system core layer have been made and compared to a UV15 cladding layer. Using the EO coefficient of APC/CLD1 with no cladding layer as a baseline, the DNA biopolymer cladding layer yielded relative poling efficiencies of 96% while the UV15 poling efficiencies were only 51%. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOPOLYMERS KW - WAVEGUIDES KW - ELECTROOPTICS KW - ELECTRIC conductivity KW - POLYCARBONATES KW - ELECTRIC fields KW - AMORPHOUS substances N1 - Accession Number: 59262263; Heckman, Emily M. 1 Aga, Roberto S. 2 Rossbach, Adam T. 3 Telek, Brian A. 3 Bartsch, Carrie M. 1 Grote, James G. 4; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 2: General Dynamics Information Technology, Dayton, Ohio 45431, 3: Department of Chemistry, University of Dayton, Dayton, Ohio 45469, 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433,; Source Info: 3/7/2011, Vol. 98 Issue 10, p103304; Subject Term: BIOPOLYMERS; Subject Term: WAVEGUIDES; Subject Term: ELECTROOPTICS; Subject Term: ELECTRIC conductivity; Subject Term: POLYCARBONATES; Subject Term: ELECTRIC fields; Subject Term: AMORPHOUS substances; Number of Pages: 3p; Illustrations: 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.3562953 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59262263&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Viggiano, A. A. AU - Troe, Jürgen T1 - Electron attachment to POCl3. III. Measurement and kinetic modeling of branching fractions. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2011/03/07/ VL - 134 IS - 9 M3 - Article SP - 094310 PB - American Institute of Physics SN - 00219606 AB - Electron attachment to POCl3 was studied in the bath gas He over the pressure range 0.4-3.1 Torr and the temperature range 300-1210 K. Branching fractions of POCl3-, POCl2-, Cl-, and Cl2- were measured. The results are analyzed by kinetic modeling, using electron attachment theory for the characterization of the nonthermal energy distribution of the excited POCl3-* anions formed and chemical activation-type unimolecular rate theory for the subsequent competition between collisional stabilization of POCl3-* and its dissociation to various dissociation products. Primary and secondary dissociations and/or thermal dissociations of the anions are identified. The measured branching fractions are found to be consistent with the modeling results based on molecular parameters obtained from quantum-chemical calculations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BRANCHING ratios (Nuclear physics) KW - PARTICLES (Nuclear physics) KW - ELECTRONS KW - CHEMICAL kinetics KW - PRESSURE KW - EXCITED state chemistry KW - ANIONS KW - HELIUM N1 - Accession Number: 59154954; Shuman, Nicholas S. 1 Miller, Thomas M. 1 Viggiano, A. A. 1 Troe, Jürgen 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Bedford, Massachusetts 01731-3010, 2: Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen,; Source Info: 3/7/2011, Vol. 134 Issue 9, p094310; Subject Term: BRANCHING ratios (Nuclear physics); Subject Term: PARTICLES (Nuclear physics); Subject Term: ELECTRONS; Subject Term: CHEMICAL kinetics; Subject Term: PRESSURE; Subject Term: EXCITED state chemistry; Subject Term: ANIONS; Subject Term: HELIUM; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 10p; Illustrations: 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1063/1.3549139 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59154954&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanford, Bret AU - Beran, Philip T1 - Formulation of Analytical Design Derivatives for Nonlinear Unsteady Aeroelasticity. JO - AIAA Journal JF - AIAA Journal Y1 - 2011/03// VL - 49 IS - 3 M3 - Article SP - 598 EP - 610 SN - 00011452 AB - The engineering community has devoted considerable recent attention to nontraditional aircraft concepts, where nonlinear, unsteady, coupled aeroelastic physics have been found to drive the design process. There is a lack of current research aimed at bringing these physical concepts into a formal optimization environment, which is the focus of the current work. A numerical framework is developed to capture the unsteady aeroelastic interactions between a nonlinear shell and the surrounding flow. An analytical sensairplanesitivity analysis of the model is then discussed, computing the derivative of the aerodynamic force production with respect to a large vector of structural design variables. The work concludes with a series of gradient-based aeroelastic optimization studies, demonstrating the efficacy of analytical gradients towards tailoring the complex interaction between fluid and structure for optimal performance. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - MATHEMATICAL optimization KW - AIRPLANES KW - AERODYNAMICS KW - STRUCTURAL design N1 - Accession Number: 59393490; Stanford, Bret 1,2; Email Address: bret.Stanford@wpafb.af.mil Beran, Philip 1,3,4; Email Address: philip.beran@wpafb.af.mil; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: National Research Council Postdoctoral Researcher 3: Principal Research Aerospace Engineer 4: Associate Fellow, AIAA; Source Info: Mar2011, Vol. 49 Issue 3, p598; Subject Term: AEROELASTICITY; Subject Term: MATHEMATICAL optimization; Subject Term: AIRPLANES; Subject Term: AERODYNAMICS; Subject Term: STRUCTURAL design; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; Number of Pages: 13p; Illustrations: 6 Black and White Photographs, 3 Diagrams, 5 Charts, 11 Graphs; Document Type: Article L3 - 10.2514/1.J050713 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59393490&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Basler, Matt T1 - The Jet Race and the Second World War. JO - Air Power History JF - Air Power History Y1 - 2011///Spring2011 VL - 58 IS - 1 M3 - Book Review SP - 48 EP - 49 PB - Air Force Historical Foundation SN - 1044016X AB - A review of the book "The Jet Race and the Second World War," by Sterling Michael Pavelec is presented. KW - JET propulsion KW - NONFICTION KW - PAVELEC, Sterling Michael KW - JET Race & the Second World War, The (Book) N1 - Accession Number: 59757497; Basler, Matt 1; Affiliation: 1: Assistant Professor of History, US. Air Force Academy; Source Info: Spring2011, Vol. 58 Issue 1, p48; Subject Term: JET propulsion; Subject Term: NONFICTION; Reviews & Products: JET Race & the Second World War, The (Book); People: PAVELEC, Sterling Michael; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59757497&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Katta, V.R. AU - Forlines, R.A. AU - Roquemore, W.M. AU - Anderson, W.S. AU - Zelina, J. AU - Gord, J.R. AU - Stouffer, S.D. AU - Roy, S. T1 - Experimental and computational study on partially premixed flames in a centerbody burner JO - Combustion & Flame JF - Combustion & Flame Y1 - 2011/03// VL - 158 IS - 3 M3 - Article SP - 511 EP - 524 SN - 00102180 AB - Abstract: The centerbody burner was designed with the objective of understanding the coupled processes of soot formation, growth, and burnout. Fuel that issues from the center of the burner establishes two flame zones – one associated with the recirculation zone (RZ) and the other, with the trailing jet. The sooting characteristics in these two flame zones can be quite different because of variations in residence time and transport of reactants and products. Calculations performed for this burner operating under a partially premixed fuel jet suggested that soot in the RZ decreases and that soot in the trailing jet flame increases with the amount of premixing. An experimental and numerical study is performed to aid the understanding of these differences. A time-dependent, axisymmetric, detailed-chemistry computational-fluid-dynamics (CFD) model known as Unsteady Ignition and Combustion using ReactioNs (UNICORN) is used for simulating flames under different equivalence-ratio conditions. Combustion and PAH formation are modeled using the Wang–Frenklach (99 species and 1066 reactions) mechanism, and soot is simulated using a two-equation model of Lindstedt. A Lagrangian-based particle-tracking model is used for understanding the evolution of soot-like particles. Flame and recirculation-zone structures and soot in the experiments are identified using direct photographs taken with and without Mie scattering from soot particles as well as laser-induced-incandescence (LII) measurements. Calculations predict the structures of the partially premixed centerbody flames for various equivalence ratios reasonably well. Experiments confirm the predicted soot suppression in the RZs and enhancement of soot in the trailing jet flame when air is added to the fuel jet. It is found that flame movement in the RZ increases soot-particle burnout and, thereby, reduces the amount of soot within the RZ. As the flame moves closer to the fuel jet, more soot becomes entrained into the inner vortex. Motion of soot-like particles explained the spiral rings observed in the experiment. Increased particle burnout with partial premixing leads to shrinkage of soot spirals. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLAME KW - SOOT KW - COMBUSTION KW - PARTICLES KW - MIE scattering KW - JET planes -- Fuel KW - FLUID dynamics KW - LAGRANGIAN functions KW - Laminar flames KW - Modeling KW - Partially premixed flames KW - Soot N1 - Accession Number: 57517467; Katta, V.R. 1; Email Address: viswanath.katta@wpafb.af.mil Forlines, R.A. 1 Roquemore, W.M. 2 Anderson, W.S. 2 Zelina, J. 2 Gord, J.R. 2 Stouffer, S.D. 3 Roy, S. 4; Affiliation: 1: Innovative Scientific Solutions Inc., 2766 Indian Ripple Road, Dayton, OH 45440, United States 2: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, United States 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, United States 4: Spectral Energies, LLC, 5100 Springfield Street, Dayton, OH 45431, United States; Source Info: Mar2011, Vol. 158 Issue 3, p511; Subject Term: FLAME; Subject Term: SOOT; Subject Term: COMBUSTION; Subject Term: PARTICLES; Subject Term: MIE scattering; Subject Term: JET planes -- Fuel; Subject Term: FLUID dynamics; Subject Term: LAGRANGIAN functions; Author-Supplied Keyword: Laminar flames; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Partially premixed flames; Author-Supplied Keyword: Soot; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.combustflame.2010.09.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57517467&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Estevadeordal, Jordi AU - Marks, Christopher AU - Sondergaard, Rolf AU - Wolff, Mitch T1 - Curved laser-sheet for conformal surface flow diagnostics. JO - Experiments in Fluids JF - Experiments in Fluids Y1 - 2011/03// VL - 50 IS - 3 M3 - Letter SP - 761 EP - 768 SN - 07234864 AB - Three-dimensional surface illumination using curved laser-sheet techniques is introduced for optical flow measurements in conformal curved surfaces. The illumination method is applicable to many different optical-based flow measurement techniques, with this paper focusing on application to flow visualization and particle image velocimetry. A brief discussion and example of curved laser-sheet generation is given followed by an example of the technique applied to PIV of low Reynolds number transitional flow around a low-pressure turbine blade. [ABSTRACT FROM AUTHOR] AB - Copyright of Experiments in Fluids is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REYNOLDS number KW - VISCOUS flow KW - AERODYNAMICS KW - VELOCIMETRY KW - FLOW visualization N1 - Accession Number: 58526476; Estevadeordal, Jordi 1,2; Email Address: Jordi.Estevadeordal@ge.com Marks, Christopher 3; Email Address: Christopher.Marks@wpafb.af.mil Sondergaard, Rolf 3; Email Address: Rolf.Sondergaard@wpafb.af.mil Wolff, Mitch 3; Email Address: James.Wolff2@wpafb.af.mil; Affiliation: 1: ISSI, Dayton, OH, USA 2: GE Global Research, One Research Circle, Niskayuna, NY 12309, USA 3: US Air Force Research Laboratory, Propulsion Directorate, 1950 Fifth Street, WPAFB, Greene, Montgomery, OH 45433, USA; Source Info: Mar2011, Vol. 50 Issue 3, p761; Subject Term: REYNOLDS number; Subject Term: VISCOUS flow; Subject Term: AERODYNAMICS; Subject Term: VELOCIMETRY; Subject Term: FLOW visualization; Number of Pages: 8p; Illustrations: 11 Diagrams; Document Type: Letter L3 - 10.1007/s00348-010-0967-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58526476&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Subramanyam, Guru AU - Patterson, Mark AU - Leedy, Kevin AU - Neidhard, Robert AU - Varanasi, Chakrapani AU - Steinhauer, Gregg T1 - Novel Multi-Capacitor Architecture for BST Thin Film Varactors. JO - Integrated Ferroelectrics JF - Integrated Ferroelectrics Y1 - 2011/03// VL - 125 IS - 1 M3 - Article SP - 11 EP - 19 SN - 10584587 AB - Novel Barium Strontium Titanate (BST) thin film varactors with parallel capacitor architecture were designed fabricated and tested. Varactors with 2-6 parallel capacitors were experimentally verified using large area processed bst thin films. The multicapacitor varactor shunt switches provided improved isolation at the expense of higher insertion loss. The multicapacitor varactors yielded reduced overall parasitic series inductance and resistances, resulting in higher quality factor Q. This is the first time such a device is reported. [ABSTRACT FROM AUTHOR] AB - Copyright of Integrated Ferroelectrics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN film devices KW - VARACTORS KW - CAPACITORS KW - ELECTRIC inductance KW - QUALITY factor meters KW - BARIUM KW - STRONTIUM KW - TITANATES N1 - Accession Number: 62610483; Subramanyam, Guru 1; Email Address: Guru.Subramanyam@notes.udayton.edu Patterson, Mark 1 Leedy, Kevin 2 Neidhard, Robert 2 Varanasi, Chakrapani 3 Steinhauer, Gregg 4; Affiliation: 1: Department of Electrical and Computer Engineering, University of Dayton, Dayton, OH, U.S.A. 2: Sensors Directorate, Air Force Research Laboratory, Dayton, OH, U.S.A. 3: University of Dayton Research Institute, 300 College Park, Dayton, OH, U.S.A. 4: Analog Bridge Incorporated, PO Box 340345, Beavercreek, OH, U.S.A.; Source Info: 2011, Vol. 125 Issue 1, p11; Subject Term: THIN film devices; Subject Term: VARACTORS; Subject Term: CAPACITORS; Subject Term: ELECTRIC inductance; Subject Term: QUALITY factor meters; Subject Term: BARIUM; Subject Term: STRONTIUM; Subject Term: TITANATES; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; Number of Pages: 9p; Illustrations: 4 Diagrams, 9 Graphs; Document Type: Article L3 - 10.1080/10584587.2011.573995 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62610483&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, Ted T. AU - Mall, Shankar AU - Zawada, Larry P. T1 - Fatigue Behavior of Hi-Nicalon Type-S. JO - International Journal of Applied Ceramic Technology JF - International Journal of Applied Ceramic Technology Y1 - 2011/03// VL - 8 IS - 2 M3 - Article SP - 261 EP - 272 SN - 1546542X AB - The fatigue behavior of Hi-Nicalon Type-S/BN/SiC ceramic matrix composites (CMCs) was investigated in a combustion environment. Two versions of this CMC were tested. The first version was manufactured by a slurry casting process using woven fiber architecture and the matrix was densified by melt-infiltration (MI) of silicon. The other was a cross-ply laminate prepared by a traditional lamination process from unidirectional prepreg followed by the MI processing. Several tests were conducted at a frequency of 1 Hz and a stress ratio of 0.05 to develop the fatigue life diagrams for both material systems. The Prepreg MI CMC exhibited higher fatigue strength, especially for cycles-to-failure >10,000, in comparison with the slurry cast MI CMC. Micrographic analysis was conducted to document the oxidation and embrittlement, which was observed to be dependent upon the applied stress level and cycles-to-failure. Overall, the prepreg MI CMC was less prone to oxidation and had better fatigue properties, demonstrating the potential for long-term use as a structural high-temperature material for high-temperature oxidative service environments, such as those found in gas turbine engines. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Applied Ceramic Technology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CERAMICS KW - COMPOSITE materials KW - COMBUSTION KW - SILICON KW - MICROGRAPHICS KW - OXIDATION KW - EMBRITTLEMENT KW - GAS turbines N1 - Accession Number: 59301237; Kim, Ted T. 1,2 Mall, Shankar 3 Zawada, Larry P. 4; Affiliation: 1: Department of Aeronautics and Astronautics (AFIT/ENY), Air Force Institute of Technology, WPAFB, Ohio 2: Air Force Research Laboratory (AFRL/RXLN), WPAFB, Ohio 45433 3: Department of Aeronautics and Astronautics (AFIT/ENY), Air Force Institute of Technology (AFIT), 2950 Hobson Way, WPAFB, Ohio 45433-7765 4: Materials and Manufacturing Directorate (AFRL/RX), Air Force Research Laboratory (AFRL), 2230 10th Street, WPAFB, Ohio 45433-7817; Source Info: Mar2011, Vol. 8 Issue 2, p261; Subject Term: CERAMICS; Subject Term: COMPOSITE materials; Subject Term: COMBUSTION; Subject Term: SILICON; Subject Term: MICROGRAPHICS; Subject Term: OXIDATION; Subject Term: EMBRITTLEMENT; Subject Term: GAS turbines; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1111/j.1744-7402.2010.02558.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59301237&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - BAYRAKTAROGLU, BURHAN AU - LEEDY, KEVIN AU - NEIDHARD, ROBERT T1 - ZnO NANOCRYSTALLINE HIGH PERFORMANCE THIN FILM TRANSISTORS. JO - International Journal of High Speed Electronics & Systems JF - International Journal of High Speed Electronics & Systems Y1 - 2011/03// VL - 20 IS - 1 M3 - Article SP - 171 EP - 182 PB - World Scientific Publishing Company SN - 01291564 AB - In this study, nc-ZnO films deposited in a Pulsed Laser Deposition (PLD) system at various temperatures were used to fabricate high performance transistors. As determined by Transmission Electron Microscope (TEM) images, nc-ZnO films deposited at a temperature range of 25°C to 400°C were made of closely packed nanocolums showing strong orientation. The influences of film growth temperature and post growth annealing on device performance were investigated. Various gate dielectric materials, including SiO2, Al2O3, and HfO2 were shown to be suitable for high performance device applications. Bottom-gate FETs fabricated on high resistivity (>2000 ohm-cm) Si substrates demonstrated record DC and high speed performance of any thin film transistors. Drain current on/off ratios better than 1012 and sub-threshold voltage swing values of less than 100mV/decade could be obtained. Devices with 2μm gate lengths produced exceptionally high current densities of >750mA/mm. Shorter gate length devices (LG=1.2μm) had current and power gain cut-off frequencies, fT and fmax, of 2.9GHz and 10GHz, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of High Speed Electronics & Systems is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN film transistors KW - ZINC oxide thin films KW - NANOCRYSTALS KW - PERFORMANCE evaluation KW - PHYSICAL vapor deposition KW - TRANSMISSION electron microscopy KW - MICROFABRICATION KW - atomic layer deposition KW - FET KW - Nanocrystalline KW - pulsed lased deposition KW - thin films N1 - Accession Number: 60159165; BAYRAKTAROGLU, BURHAN 1; Email Address: burhan.bayraktaroglu@wpafb.af.mil LEEDY, KEVIN 1 NEIDHARD, ROBERT 1; Affiliation: 1: Air force Research Laboratory, AFRL/RYD, Wright Patterson Air Force Base, OH 45433, USA; Source Info: Mar2011, Vol. 20 Issue 1, p171; Subject Term: THIN film transistors; Subject Term: ZINC oxide thin films; Subject Term: NANOCRYSTALS; Subject Term: PERFORMANCE evaluation; Subject Term: PHYSICAL vapor deposition; Subject Term: TRANSMISSION electron microscopy; Subject Term: MICROFABRICATION; Author-Supplied Keyword: atomic layer deposition; Author-Supplied Keyword: FET; Author-Supplied Keyword: Nanocrystalline; Author-Supplied Keyword: pulsed lased deposition; Author-Supplied Keyword: thin films; Number of Pages: 12p; Illustrations: 1 Diagram, 9 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60159165&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - El-Awady, Jaafar A. AU - Rao, Satish I. AU - Woodward, Christopher AU - Dimiduk, Dennis M. AU - Uchic, Michael D. T1 - Trapping and escape of dislocations in micro-crystals with external and internal barriers JO - International Journal of Plasticity JF - International Journal of Plasticity Y1 - 2011/03// VL - 27 IS - 3 M3 - Article SP - 372 EP - 387 SN - 07496419 AB - Abstract: We perform three-dimensional dislocation dynamics simulations of solid and annular pillars, having both free-surface boundary conditions, or strong barriers at the outer and/or inner surfaces. Both pillar geometries are observed to exhibit a size effect where smaller pillars are stronger. The scaling observed is consistent with the weakest-link activation mechanism and depends on the solid pillar diameter, or the annular pillar effective diameter, D eff = D − D i , where D and D i are the external and internal diameters of the pillar, respectively. An external strong barrier is observed to dramatically increase the dislocation density by an order of magnitude due to trapping dislocations at the surface. In addition, a considerable increase in the flow strength, by up to 60%, is observed compared to simulations having free-surface boundary conditions. As the applied load increases, weak spots form on the surface of the pillar by dislocations breaking through the surface when the RSS is greater than the barrier strength. The hardening rate is also observed to increase with increasing barrier strength. With cross-slip, we observe dislocations moving to other glide planes, and sometimes double-cross-slipping, producing a thickening of the slip traces at the surface. Finally the results are in qualitative agreement with recent compression experimental results of coated and centrally-filled micropillars. [Copyright &y& Elsevier] AB - Copyright of International Journal of Plasticity is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISLOCATIONS in crystals KW - SIMULATION methods & models KW - SURFACE coatings KW - LOADS (Mechanics) KW - ANALYTICAL mechanics KW - BOUNDARY value problems KW - Coatings KW - Dislocation dynamics KW - Size effects N1 - Accession Number: 58096497; El-Awady, Jaafar A. 1,2; Email Address: jelawady@jhu.edu Rao, Satish I. 1,3 Woodward, Christopher 1 Dimiduk, Dennis M. 1 Uchic, Michael D. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLM Wright-Patterson AFB, OH 45433-7817, USA 2: Universal Technology Corporation, 1270 North Fairfield Road, Dayton, OH 45432-2600, USA 3: UES, 4401 Dayton-Xenia Rd., Dayton, OH 45432-1894, USA; Source Info: Mar2011, Vol. 27 Issue 3, p372; Subject Term: DISLOCATIONS in crystals; Subject Term: SIMULATION methods & models; Subject Term: SURFACE coatings; Subject Term: LOADS (Mechanics); Subject Term: ANALYTICAL mechanics; Subject Term: BOUNDARY value problems; Author-Supplied Keyword: Coatings; Author-Supplied Keyword: Dislocation dynamics; Author-Supplied Keyword: Size effects; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.ijplas.2010.06.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58096497&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Osur, Alan M. T1 - Freedom Flyers: The Tuskegee Airmen of World War II. JO - Journal of American History JF - Journal of American History Y1 - 2011/03// VL - 97 IS - 4 M3 - Book Review SP - 1161 EP - 1161 PB - Oxford University Press / USA SN - 00218723 AB - A review of the book "Freedom Flyers: The Tuskegee Airmen of World War II," by J. Todd Moye is presented. KW - NONFICTION KW - UNITED States. Army Air Forces (1942-1947). Fighter Group, 332nd. KW - MOYE, J. Todd KW - FREEDOM Flyers: The Tuskegee Airmen of World War II (Book) N1 - Accession Number: 59518760; Osur, Alan M. 1; Affiliation: 1: United States Air Force Academy, Colorado Springs, Colorado; Source Info: Mar2011, Vol. 97 Issue 4, p1161; Subject Term: NONFICTION; Company/Entity: UNITED States. Army Air Forces (1942-1947). Fighter Group, 332nd.; Reviews & Products: FREEDOM Flyers: The Tuskegee Airmen of World War II (Book); People: MOYE, J. Todd; Number of Pages: 3/4p; Document Type: Book Review L3 - 10.1093/jahist/jaq011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59518760&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Buguo AU - Bliss, David AU - Suscavage, Michael AU - Swider, Stacy AU - Lancto, Robert AU - Lynch, Candace AU - Weyburne, David AU - Li, Ti AU - Ponce, Fernando A. T1 - Ammonothermal growth of high-quality GaN crystals on HVPE template seeds JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2011/03// VL - 318 IS - 1 M3 - Article SP - 1030 EP - 1033 SN - 00220248 AB - Abstract: High quality GaN crystals have been successfully grown by the ammonothermal method in alkaline ammonia solutions using hydride vapor phase epitaxy (HVPE) seeds. The grown crystals, over 1 mmthick, are clear and possess excellent structural and optical properties. The crystalline structure of the as-grown bulk GaN is as good as, or better than the HVPE seeds as measured by high resolution X-ray rocking curves with 100arcsec of full width at half maximum (FWHM) on (002) and 90arcsec on (102) diffractions. The crystal quality is improved through a process of careful seed selection and controlled heating during nucleation, so that the ammonothermal growth replicates the seed crystals on both the nitrogen and gallium faces. The results are confirmed by low temperature photoluminescence spectra resolving donor-bound and free excitons as well as multiple phonon replicas, and further by room temperature cathodoluminescence indicating reduced yellow-band emission. Successful growth of high quality GaN crystals on HVPE seeds will facilitate the scale-up to large area growth by use of large area GaN HVPE templates as seeds. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - METAL crystals -- Growth KW - METAL organic chemical vapor deposition KW - MOLECULAR structure KW - PHOTOLUMINESCENCE KW - NUCLEATION KW - SOLUTION (Chemistry) KW - A1. HVPE seed KW - A2. Crystal growth KW - A2. The ammonothermal technique KW - B1. Bulk GaN KW - B2. Characterization N1 - Accession Number: 59457524; Wang, Buguo 1; Email Address: buguo@solidstatescientific.com Bliss, David 2 Suscavage, Michael 2 Swider, Stacy 1 Lancto, Robert 1 Lynch, Candace 2 Weyburne, David 2 Li, Ti 3 Ponce, Fernando A. 3; Affiliation: 1: Solid State Scientific Corporation, 27-2 Wright Road, Hollis, NH 03049, USA 2: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA 3: Department of Physics, Arizona State University, AZ 85287, USA; Source Info: Mar2011, Vol. 318 Issue 1, p1030; Subject Term: GALLIUM nitride; Subject Term: METAL crystals -- Growth; Subject Term: METAL organic chemical vapor deposition; Subject Term: MOLECULAR structure; Subject Term: PHOTOLUMINESCENCE; Subject Term: NUCLEATION; Subject Term: SOLUTION (Chemistry); Author-Supplied Keyword: A1. HVPE seed; Author-Supplied Keyword: A2. Crystal growth; Author-Supplied Keyword: A2. The ammonothermal technique; Author-Supplied Keyword: B1. Bulk GaN; Author-Supplied Keyword: B2. Characterization; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jcrysgro.2010.10.080 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59457524&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mastroianni, George R. T1 - THE PERSON-SITUATION DEBATE: IMPLICATIONS FOR MILITARY LEADERSHIP AND CIVILIAN-MILITARY RELATIONS. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2011/03// VL - 10 IS - 1 M3 - Article SP - 2 EP - 16 PB - Routledge SN - 15027570 AB - The so-called person-situation debate in psychology, which pits internal, personality-based explanations of behavior against external, environment or situation-based explanations seems headed for a resolution that will somehow include elements of both perspectives. These two alternative views of human behavior have also been applied to that subset of human behavior thought of as leadership, and in this domain a rapprochement also seems well underway. In the domain of ethical leadership, however, especially as applied to military misconduct, public discussion of such events is dominated by strictly situation-based explanations, while institutional developments within the military are showing signs of integration, paralleling developments in the broader academic domain. The public discussion of such events thus lags behind the approach to ethical conduct in war taken by the military, which increasingly integrates personal and situational factors in the moral and ethical development of soldiers and leaders. Potential consequences of overreliance on situationist approaches to military ethics are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Military Ethics is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PSYCHOLOGY KW - MILITARY art & science KW - LEADERSHIP KW - MILITARY personnel KW - ETHICS KW - MILITARY ethics KW - Milgram KW - Psychology KW - situationism KW - warfare KW - Zimbardo N1 - Accession Number: 60294618; Mastroianni, George R. 1; Email Address: George.Mastroianni@usafa.edu; Affiliation: 1: United States Air Force Academy, USA; Source Info: Mar2011, Vol. 10 Issue 1, p2; Subject Term: PSYCHOLOGY; Subject Term: MILITARY art & science; Subject Term: LEADERSHIP; Subject Term: MILITARY personnel; Subject Term: ETHICS; Subject Term: MILITARY ethics; Author-Supplied Keyword: Milgram; Author-Supplied Keyword: Psychology; Author-Supplied Keyword: situationism; Author-Supplied Keyword: warfare; Author-Supplied Keyword: Zimbardo; Number of Pages: 15p; Document Type: Article L3 - 10.1080/15027570.2011.561636 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=60294618&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Woods, Paul M. AU - Oliveira, J. M. AU - Kemper, F. AU - van Loon, J. Th. AU - Sargent, B. A. AU - Matsuura, M. AU - Szczerba, R. AU - Volk, K. AU - Zijlstra, A. A. AU - Sloan, G. C. AU - Lagadec, E. AU - McDonald, I. AU - Jones, O. AU - Gorjian, V. AU - Kraemer, K. E. AU - Gielen, C. AU - Meixner, M. AU - Blum, R. D. AU - Sewiło, M. AU - Riebel, D. T1 - The SAGE-Spec Spitzer Legacy programme: the life-cycle of dust and gas in the Large Magellanic Cloud - Point source classification I. JO - Monthly Notices of the Royal Astronomical Society JF - Monthly Notices of the Royal Astronomical Society Y1 - 2011/03// VL - 411 IS - 3 M3 - Article SP - 1597 EP - 1627 PB - Oxford University Press / USA SN - 00358711 AB - We present the classification of 197 point sources observed with the Infrared Spectrograph in the SAGE-Spec Legacy programme on the Spitzer Space Telescope. We introduce a decision-tree method of object classification based on infrared spectral features, continuum and spectral energy distribution shape, bolometric luminosity, cluster membership and variability information, which is used to classify the SAGE-Spec sample of point sources. The decision tree has a broad application to mid-infrared spectroscopic surveys, where supporting photometry and variability information are available. We use these classifications to make deductions about the stellar populations of the Large Magellanic Cloud and the success of photometric classification methods. We find 90 asymptotic giant branch (AGB) stars, 29 young stellar objects, 23 post-AGB objects, 19 red supergiants, eight stellar photospheres, seven background galaxies, seven planetary nebulae, two H regions and 12 other objects, seven of which remain unclassified. [ABSTRACT FROM AUTHOR] AB - Copyright of Monthly Notices of the Royal Astronomical Society is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COSMIC dust KW - MAGELLANIC clouds KW - INFRARED spectra KW - SPECTROGRAPHS KW - DECISION trees KW - SPECTRAL energy distribution KW - ASTRONOMICAL photometry N1 - Accession Number: 58510225; Woods, Paul M. 1 Oliveira, J. M. 2 Kemper, F. 1 van Loon, J. Th. 2 Sargent, B. A. 3 Matsuura, M. 4,5 Szczerba, R. 6 Volk, K. 3 Zijlstra, A. A. 1 Sloan, G. C. 7 Lagadec, E. 1,8 McDonald, I. 1 Jones, O. 1 Gorjian, V. 9 Kraemer, K. E. 10 Gielen, C. 11 Meixner, M. 3 Blum, R. D. 12 Sewiło, M. 3 Riebel, D. 13; Affiliation: 1: Jodrell Bank Centre for Astrophysics, Alan Turing Building, School of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester M13 9PL 2: School of Physical & Geographical Sciences, Lennard-Jones Laboratories, Keele University, Staffordshire ST5 5BG 3: Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA 4: Institute of Origins, Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT 5: Institute of Origins, Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT 6: N. Copernicus Astronomical Center, Rabianska 8, 87-100 Toruń, Poland 7: Department of Astronomy, Cornell University, Ithaca, NY 14853, USA 8: European Southern Observatory, Karl-Schwarzschild-Straße 2, D-85748 Garching bei München, Germany 9: JPL/Caltech, MS 169-506, 4800 Oak Grove Dr., Pasadena, CA 91109, USA 10: US Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom AFB, MA 01731, USA 11: Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium 12: NOAO, 950 North Cherry Avenue, Tucson, AZ 85719, USA 13: Department of Physics and Astronomy, Johns Hopkins University, Homewood Campus, Baltimore, MD 21218, USA; Source Info: Mar2011, Vol. 411 Issue 3, p1597; Subject Term: COSMIC dust; Subject Term: MAGELLANIC clouds; Subject Term: INFRARED spectra; Subject Term: SPECTROGRAPHS; Subject Term: DECISION trees; Subject Term: SPECTRAL energy distribution; Subject Term: ASTRONOMICAL photometry; NAICS/Industry Codes: 417930 Professional machinery, equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; NAICS/Industry Codes: 423490 Other Professional Equipment and Supplies Merchant Wholesalers; Number of Pages: 31p; Illustrations: 1 Color Photograph, 1 Diagram, 4 Charts, 19 Graphs; Document Type: Article L3 - 10.1111/j.1365-2966.2010.17794.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58510225&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - De Tan, Wei AU - Chen, Fuming AU - Knize, Randall James AU - Zhang, Jian AU - Tang, Dingyuan AU - Li, Lian-Jong T1 - Passive mode locking of ceramic Nd: YAG using (7,5) semiconducting single walled carbon nanotubes JO - Optical Materials JF - Optical Materials Y1 - 2011/03// VL - 33 IS - 5 M3 - Article SP - 679 EP - 683 SN - 09253467 AB - Abstract: Passive mode-locking of a ceramic Nd: YAG laser was demonstrated using highly purified single walled carbon nanotubes (SWCNTs) as the saturable absorber (SA). Poly [(9,9-dihexylfluorenyl-2,7-diyl)-co-(9,10-an-thracene)] or PFO was used to extract a purified sample of semiconducting SWCNTs that consisted of mainly (7,5) nanotubes (∼80% of the SWCNT ensemble). The pulses had a near Fourier transform-limited pulse width of about 8.3ps in a non-dispersion compensated setup. In addition, Z-scan investigations revealed that SWCNT SA had a saturation intensity of about 1.7MWcm−2 with a modulation depth of about 6% and a non-saturable loss of about 5.5%. [Copyright &y& Elsevier] AB - Copyright of Optical Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ND-YAG lasers KW - MODE-locked lasers KW - CARBON nanotubes KW - CERAMIC materials KW - SEMICONDUCTORS KW - FOURIER transform optics KW - DISPERSION KW - Ceramics KW - Mode locked lasers KW - Nd: YAG KW - SWCNTs N1 - Accession Number: 58096246; De Tan, Wei 1; Email Address: tanw0133@ntu.edu.sg Chen, Fuming 2 Knize, Randall James 3 Zhang, Jian 2 Tang, Dingyuan 1 Li, Lian-Jong 2; Affiliation: 1: School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore 2: School of Material Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore 3: Department of Physics, United States Air Force Academy, CO 80840, USA; Source Info: Mar2011, Vol. 33 Issue 5, p679; Subject Term: ND-YAG lasers; Subject Term: MODE-locked lasers; Subject Term: CARBON nanotubes; Subject Term: CERAMIC materials; Subject Term: SEMICONDUCTORS; Subject Term: FOURIER transform optics; Subject Term: DISPERSION; Author-Supplied Keyword: Ceramics; Author-Supplied Keyword: Mode locked lasers; Author-Supplied Keyword: Nd: YAG; Author-Supplied Keyword: SWCNTs; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.optmat.2010.10.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58096246&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Trivedi, Hitesh K. AU - Forster, Nelson H. AU - Rosado, Lewis T1 - Rolling Contact Fatigue Evaluation of Advanced Bearing Steels with and Without the Oil Anti-Wear Additive Tricresyl Phosphate. JO - Tribology Letters JF - Tribology Letters Y1 - 2011/03// VL - 41 IS - 3 M3 - Article SP - 597 EP - 605 SN - 10238883 AB - The effect of the oil anti-wear additive tricresyl phosphate (TCP) on rolling contact fatigue (RCF) life of advanced bearing steels-AISI VIMVAR M50, CSS 42L, Pyrowear 675, and Cronidur 30 was investigated with silicon nitride balls at 177 °C and at a maximum Hertzian stress of 5.5 GPa. TCP at 1% additive concentration was blended into a synthetic polyol ester turbine engine lubricant basestock having a nominal viscosity of 3 cSt at 100 °C. Additionally, the basestock was fortified with the anti-oxidants dioctyl-diphenyl amine (DODPA) and phenyl-α-napthyl amine (PANA) at 1% concentration each. The presence of TCP has a measurable positive effect on RCF life and wear. Also, all the advanced bearing materials exhibited superior fatigue life compared to conventional bearing steel M50, both with and without TCP. The study indicates that current gas turbine lubricant formulations with TCP have positive effects on fatigue life and wear performance of M50, Pyrowear 675, CSS 42L, and Cronidur 30. [ABSTRACT FROM AUTHOR] AB - Copyright of Tribology Letters is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JET engines KW - PHOSPHATES KW - LUBRICATION & lubricants KW - BEARING steel KW - BEARINGS (Machinery) KW - Anti-fatigue additive KW - Boundary lubrication KW - Jet engine oil KW - Rolling element bearings N1 - Accession Number: 58502912; Trivedi, Hitesh K. 1; Email Address: hitesh.trivedi@wpafb.af.mil Forster, Nelson H. 2 Rosado, Lewis 2; Affiliation: 1: UES Inc, 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Mar2011, Vol. 41 Issue 3, p597; Subject Term: JET engines; Subject Term: PHOSPHATES; Subject Term: LUBRICATION & lubricants; Subject Term: BEARING steel; Subject Term: BEARINGS (Machinery); Author-Supplied Keyword: Anti-fatigue additive; Author-Supplied Keyword: Boundary lubrication; Author-Supplied Keyword: Jet engine oil; Author-Supplied Keyword: Rolling element bearings; NAICS/Industry Codes: 423840 Industrial Supplies Merchant Wholesalers; NAICS/Industry Codes: 332991 Ball and Roller Bearing Manufacturing; NAICS/Industry Codes: 324191 Petroleum Lubricating Oil and Grease Manufacturing; Number of Pages: 9p; Illustrations: 1 Black and White Photograph, 1 Diagram, 2 Charts, 8 Graphs; Document Type: Article L3 - 10.1007/s11249-010-9738-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58502912&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Manurkar, Paritosh AU - Darvish, Shaban-Ramezani AU - Nguyen, Binh-Minh AU - Razeghi, Manijeh AU - Hubbs, John T1 - Erratum: 'High performance long wavelength infrared mega-pixel focal plane array based on type-II superlattices' [Appl. Phys. Lett. 97, 193505 (2010)]. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2011/02/21/ VL - 98 IS - 8 M3 - Erratum SP - 089902 PB - American Institute of Physics SN - 00036951 KW - PERFORMANCE evaluation KW - WAVELENGTHS KW - INFRARED radiation KW - SUPERLATTICES KW - SCIENCE -- Periodicals -- Publishing N1 - Accession Number: 58664888; Manurkar, Paritosh 1 Darvish, Shaban-Ramezani 1 Nguyen, Binh-Minh 1 Razeghi, Manijeh 1 Hubbs, John 2; Affiliation: 1: Department of Electrical Engineering and Computer Science, Center for Quantum Devices, Northwestern University, Evanston, Illinois 60208, 2: U.S. Air Force Research Laboratory/RVSS, Kirtland Air Force Base, New Mexico 87117,; Source Info: 2/21/2011, Vol. 98 Issue 8, p089902; Subject Term: PERFORMANCE evaluation; Subject Term: WAVELENGTHS; Subject Term: INFRARED radiation; Subject Term: SUPERLATTICES; Subject Term: SCIENCE -- Periodicals -- Publishing; Number of Pages: 1p; Document Type: Erratum L3 - 10.1063/1.3557024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58664888&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sasaki, T. T. AU - Fu, B. AU - Torres, K. AU - Thompson, G. B. AU - Srinivasan, R. AU - Cherukuri, B. AU - Tiley, J. T1 - Nucleation and growth of α-Ti on TiB precipitates in Ti-15Mo-2.6Nb-3Al-0.2Si-0.12B. JO - Philosophical Magazine JF - Philosophical Magazine Y1 - 2011/02/21/ VL - 91 IS - 6 M3 - Article SP - 850 EP - 864 SN - 14786435 AB - The microstructure was investigated of a β-stabilized Ti-15Mo-2.6Nb-3Al-0.2Si-0.12B alloy at two different aging temperatures, 540°C/8 h and 660°C/8 h. In particular, the heterogeneous nucleation of α-Ti from TiB particles was studied at these aging temperatures. At the lower aging temperature, α-Ti precipitated as needle-like shapes on the TiB phase. In contrast, the higher aged sample exhibited globular α-Ti morphology around the TiB phase. This difference was rationalized in terms of the coarsening behavior of α-Ti around the TiB phase. Various orientation relationships were observed between these two samples. This difference is because of the precipitation of α-Ti on two different TiB planes. In addition, atom probe analysis confirmed the segregation of alpha and beta stabilizing elements to the respective phases. At the lower aging temperature, it was noted that silicon enriched the α-Ti/β-Ti interface when the α-Ti/β-Ti/TiB were all in contact. Upon α-Ti coarsening, silicon enrichment was observed at the α-Ti/TiB interface at the higher aging temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Magazine is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUCLEATION KW - MICROSTRUCTURE KW - TEMPERATURE KW - TITANIUM diboride KW - PRECIPITATION (Chemistry) KW - TITANIUM alloys KW - MOLECULAR probes KW - OSTWALD ripening KW - α-titanium KW - β-titanium alloy KW - 3D atom probe analysis KW - titanium boride KW - transmission electron microscopy N1 - Accession Number: 57830460; Sasaki, T. T. 1 Fu, B. 1 Torres, K. 1 Thompson, G. B. 1 Srinivasan, R. 2 Cherukuri, B. 2 Tiley, J. 3; Affiliation: 1: Department of Metallurgical and Materials Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA 2: Mechanical and Materials Engineering Department, Wright State University, Dayton, OH 45435, USA 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45431, USA; Source Info: Feb2011, Vol. 91 Issue 6, p850; Subject Term: NUCLEATION; Subject Term: MICROSTRUCTURE; Subject Term: TEMPERATURE; Subject Term: TITANIUM diboride; Subject Term: PRECIPITATION (Chemistry); Subject Term: TITANIUM alloys; Subject Term: MOLECULAR probes; Subject Term: OSTWALD ripening; Author-Supplied Keyword: α-titanium; Author-Supplied Keyword: β-titanium alloy; Author-Supplied Keyword: 3D atom probe analysis; Author-Supplied Keyword: titanium boride; Author-Supplied Keyword: transmission electron microscopy; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 15p; Document Type: Article L3 - 10.1080/14786435.2010.533134 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57830460&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dunkerley, Erik AU - Koerner, Hilmar AU - Vaia, Richard A. AU - Schmidt, Daniel T1 - Structure and dynamic mechanical properties of highly oriented PS/clay nanolaminates over the entire composition range JO - Polymer JF - Polymer Y1 - 2011/02/17/ VL - 52 IS - 4 M3 - Article SP - 1163 EP - 1171 SN - 00323861 AB - Abstract: A series of highly oriented model polymer/clay nanocomposites (nanolaminates) are prepared via a newly developed solvent deposition process with compositions ranging from neat polymer to neat organoclay. Morphology is analyzed via scanning electron microscopy (SEM) and wide-angle X-ray diffraction (WAXD) while thermogravimetric analysis (TGA) is used to confirm composition and solvent removal. Dynamic mechanical analysis (DMA) is used to examine the trends in stiffness and damping properties as the composition is shifted from polymer-rich to polymer-starved. The role of the organoclay modifier in determining the structure and properties of these nanolaminates is also reported. Experimental moduli are compared to relevant micromechanical models including Tandon–Weng and Halpin–Tsai. These comparisons allow for the identification of deviations from the behavior expected of conventional blends and composites, highlighting the effects of nanostructuration and the presence of the organic modifier on materials behavior. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR structure KW - MATERIALS -- Mechanical properties KW - LAMINATED materials KW - NANOCOMPOSITE materials KW - X-ray diffraction KW - POLYMERS KW - THERMOGRAVIMETRY KW - DAMPING (Mechanics) KW - Dynamic mechanical analysis KW - Nanocomposite KW - Nanolaminate N1 - Accession Number: 58097536; Dunkerley, Erik 1 Koerner, Hilmar 2,3 Vaia, Richard A. 2 Schmidt, Daniel 1; Email Address: daniel_schmidt@uml.edu; Affiliation: 1: Department of Plastics Engineering/Nanomanufacturing Center, University of Massachusetts Lowell, Lowell, MA 01854, USA 2: Nanostructured and Biological Materials Branch, United States Air Force Research Laboratory, WPAFB, OH, USA 3: UES Inc., Dayton, OH, USA; Source Info: Feb2011, Vol. 52 Issue 4, p1163; Subject Term: MOLECULAR structure; Subject Term: MATERIALS -- Mechanical properties; Subject Term: LAMINATED materials; Subject Term: NANOCOMPOSITE materials; Subject Term: X-ray diffraction; Subject Term: POLYMERS; Subject Term: THERMOGRAVIMETRY; Subject Term: DAMPING (Mechanics); Author-Supplied Keyword: Dynamic mechanical analysis; Author-Supplied Keyword: Nanocomposite; Author-Supplied Keyword: Nanolaminate; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.polymer.2011.01.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58097536&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fritzinger, Angela E. AU - Walters, Carol C. AU - Kelly, Sean T. AU - Toney, Denise M. T1 - Viral Gastroenteritis: Pathogenesis and Laboratory Detection and Characterization in the Commonwealth of Virginia JO - Clinical Microbiology Newsletter JF - Clinical Microbiology Newsletter Y1 - 2011/02/15/ VL - 33 IS - 4 M3 - Article SP - 25 EP - 31 SN - 01964399 AB - Abstract: Public health laboratories perform testing to identify and characterize cases and clusters of acute gastroenteritis (AGE). Viral pathogens, in particular norovirus, are reportedly the most common cause of AGE outbreaks. CaliciNet, a centralized database at the Centers for Disease Control and Prevention, collects and compares viral sequences for surveillance and outbreak tracking purposes. At the state level, viral agent testing supports epidemiologic investigations of AGE outbreaks. The resulting data are used to educate the public health and medical communities and to track mutations that may impact testing methods. A retrospective analysis of norovirus data generated by the Virginia State Laboratory between 2001 and 2009 assessed statewide trends compared to national data. The data demonstrate that Norovirus genogroup II outbreaks are the most prevalent cause of AGE outbreaks and that outbreaks exhibit a higher occurrence in the winter months and in adult care facilities in Virginia and nationally. [Copyright &y& Elsevier] AB - Copyright of Clinical Microbiology Newsletter is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GASTROENTERITIS KW - PUBLIC health KW - PATHOGENIC microorganisms KW - EPIDEMICS KW - PREVENTIVE medicine KW - EPIDEMIOLOGY KW - RETROSPECTIVE studies KW - VIRGINIA N1 - Accession Number: 57857406; Fritzinger, Angela E. 1 Walters, Carol C. 1,2,3 Kelly, Sean T. 1 Toney, Denise M. 1; Email Address: denise.toney@dgs.virginia.gov; Affiliation: 1: Commonwealth of Virginia, Division of Consolidated Laboratory Services, VA 2: Virginia Commonwealth University, Department of Microbiology and Immunology, Richmond, VA 3: Air Force Institute of Technology, Civilian Institution Programs, United States Air Force; Source Info: Feb2011, Vol. 33 Issue 4, p25; Subject Term: GASTROENTERITIS; Subject Term: PUBLIC health; Subject Term: PATHOGENIC microorganisms; Subject Term: EPIDEMICS; Subject Term: PREVENTIVE medicine; Subject Term: EPIDEMIOLOGY; Subject Term: RETROSPECTIVE studies; Subject Term: VIRGINIA; NAICS/Industry Codes: 525120 Health and Welfare Funds; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.clinmicnews.2011.01.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57857406&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tandon, G.P. AU - Pochiraju, K.V. T1 - Heterogeneous Thermo-oxidative Behavior of Multidirectional Laminated Composites. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2011/02/15/ VL - 45 IS - 4 M3 - Article SP - 415 EP - 435 SN - 00219983 AB - This article examines the through-the-thickness heterogeneity observed in oxidation profiles of composite laminates. The effect of ply angle on oxygen diffusivity and the influence of ply stacking sequence on oxidation behavior of isothermally aged multidirectional composites are discussed by correlating experimental observations and a three-dimensional oxidation model. Experimental observations of oxidation growth are made using dark-field optical microscopy, while damage initiation and growth is detected using fluorescence imaging with dye impregnation. Oxidation growth in laminated systems is simulated using a diffusion-reaction-conversion model developed earlier for resin oxidation along with homogenization techniques. Several stacking sequences of carbon fiber-reinforced polyimide composites are studied. The effects of the orthotropy in the diffusivity tensors of each ply and the influence of neighboring ply on oxidation growth are clearly illustrated. The simulation results presented in this article are valid till the onset of damage, beyond which coupling effects between oxidation growth and damage evolution have to be addressed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INHOMOGENEOUS materials KW - COMPOSITE materials KW - LAMINATED materials KW - OXIDATION KW - OXYGEN KW - SIMULATION methods & models KW - CORRELATION (Statistics) KW - anisotropic oxidation KW - damage KW - micromechanics KW - optical microscopy KW - ply orientation KW - polyimides KW - stacking sequence N1 - Accession Number: 58645615; Tandon, G.P. 1 Pochiraju, K.V. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate AFRL/RXBC, Wright-Patterson Air Force Base, OH 45433, USA, University of Dayton Research Institute, Dayton, OH 45469-0060, USA, G.Tandon@wpafb.af.mil 2: Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken NJ 07030, USA; Source Info: 02/15/2011, Vol. 45 Issue 4, p415; Subject Term: INHOMOGENEOUS materials; Subject Term: COMPOSITE materials; Subject Term: LAMINATED materials; Subject Term: OXIDATION; Subject Term: OXYGEN; Subject Term: SIMULATION methods & models; Subject Term: CORRELATION (Statistics); Author-Supplied Keyword: anisotropic oxidation; Author-Supplied Keyword: damage; Author-Supplied Keyword: micromechanics; Author-Supplied Keyword: optical microscopy; Author-Supplied Keyword: ply orientation; Author-Supplied Keyword: polyimides; Author-Supplied Keyword: stacking sequence; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 21p; Document Type: Article; Full Text Word Count: 6693 L3 - 10.1177/0021998310376109 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58645615&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aliat, A. AU - Vedula, P. AU - Josyula, E. T1 - Simple model for vibration~translation exchange at high temperatures: Effects of multiquantum transitions on the relaxation of a N2 gas flow behind a shock. JO - Physical Review E: Statistical, Nonlinear & Soft Matter Physics JF - Physical Review E: Statistical, Nonlinear & Soft Matter Physics Y1 - 2011/02/15/ VL - 83 IS - 2-2 M3 - Article SP - 26308-1 EP - 26308-11 SN - 15393755 AB - In this paper a simple model is proposed for computation of rate coefficients related to vibration-translation transitions based on the forced harmonic oscillator theory. This model, which is developed by considering a quadrature method, provides rate coefficients that are in very good agreement with those found in the literature for the high temperature regime (≳ 10 000 K). This model is implemented to study a one-dimensional nonequilibrium inviscid N2 flow behind a plane shock by considering a state-to-state approach. While the effects of ionization and chemical reactions are neglected in our study, our results show that multiquantum transitions have a great influence on the relaxation of the macroscopic parameters of the gas flow behind the shock, especially on vibrational distributions of high levels. All vibrational states are influenced by multiquantum processes, but the effective number of transitions decreases inversely according to the vibrational quantum number. For the initial conditions considered in this study, excited electronic states are found to be weakly populated and can be neglected in modeling. Moreover, the computing time is considerably reduced with the model described in this paper compared to others found in the literature. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review E: Statistical, Nonlinear & Soft Matter Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHASE transformations (Physics) KW - MATHEMATICAL models KW - HARMONIC oscillators KW - COEFFICIENTS (Statistics) KW - HIGH temperatures N1 - Accession Number: 83547911; Aliat, A. 1; Email Address: azizaliat@ou.edu Vedula, P. 1; Email Address: pvedula@ou.edu Josyula, E. 2; Affiliation: 1: School of Aerospace and Mechanical Engineering, University of Oklahonza, Norman, Oklahoma 73019, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, USA; Source Info: Feb2011, Vol. 83 Issue 2-2, p26308-1; Subject Term: PHASE transformations (Physics); Subject Term: MATHEMATICAL models; Subject Term: HARMONIC oscillators; Subject Term: COEFFICIENTS (Statistics); Subject Term: HIGH temperatures; Number of Pages: 11p; Document Type: Article L3 - 10.1103/PhysRevE.83.026308 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83547911&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hotop, H. AU - Ruf, M.-W. AU - Kopyra, J. AU - Miller, T. M. AU - Fabrikant, I. I. T1 - On the relation between the activation energy for electron attachment reactions and the size of their thermal rate coefficients. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2011/02/14/ VL - 134 IS - 6 M3 - Article SP - 064303 PB - American Institute of Physics SN - 00219606 AB - Rate coefficients k(T) for dissociative electron attachment (DEA) to molecules in many cases exhibit a more or less strong rise with increasing temperature T (the electron temperature Te and the molecular temperature TG are assumed to be in thermal equilibrium, i.e., T = Te = TG). This rise is frequently modeled by the Arrhenius equation k(T) = kA exp[-Ea/(kBT)], and an activation energy Ea is deduced from fits to the experimental data k(T). This behavior reflects the presence of an energy barrier for the anion on its path to the dissociated products. In a recent paper [J. Kopyra, J. Wnorowska, M. Forys, and I. Szamrej, Int. J. Mass Spectrom. 268, 60 (2007)] it was suggested that the size of the rate coefficients for DEA reactions at room temperature exhibits an exponential dependence on the activation energy, i.e., k(Ea; T ≈ 300 K) = k1 exp[-Ea/E0]. More recent experimental data for molecules with high barriers [T. M. Miller, J. F. Friedman, L. C. Schaffer, and A. A. Viggiano, J. Chem. Phys. 131, 084302 (2009)] are compatible with such a correlation. We investigate the validity and the possible origin of this dependence by analyzing the results of R-matrix calculations for temperature-dependent rate coefficients of exothermic DEA processes with intermediate barrier toward dissociation. These include results for model systems with systematically varied barrier height as well as results of molecule-specific calculations for CH3Cl, CH3Br, CF3Cl, and CH2Cl2 (activation energies above 0.2 eV) involving appropriate molecular parameters. A comparison of the experimental and theoretical results for the considered class of molecules (halogenated alkanes) supports the idea that the exponential dependence of k(T = 300 K) on the activation energy reflects a general phenomenon associated with Franck-Condon factors for getting from the initial neutral vibrational levels to the dissociating final anion state in a direct DEA process. Cases are discussed for which the proposed relation does not apply. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACTIVATION (Chemistry) KW - FORCE & energy KW - CHEMICAL kinetics KW - DISSOCIATION (Chemistry) KW - ELECTRON temperature KW - THERMODYNAMIC equilibrium KW - INTERMEDIATES (Chemistry) N1 - Accession Number: 58114194; Hotop, H. 1 Ruf, M.-W. 1 Kopyra, J. 2 Miller, T. M. 3 Fabrikant, I. I. 1,4,5; Affiliation: 1: Fachbereich Physik, Technische Universität Kaiserslautern, D-67653 Kaiserslautern, 2: Chemistry Department, University in Siedlce, 08-110 Siedlce, 3: Air Force Research Laboratory, Hanscom Air Force Base, Bedford, Massachusetts 01731-3010, 4: Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588-0111, 5: Department of Physics and Astronomy, The Open University, Walton Hall, Milton Keynes MK7 6AA,; Source Info: 2/14/2011, Vol. 134 Issue 6, p064303; Subject Term: ACTIVATION (Chemistry); Subject Term: FORCE & energy; Subject Term: CHEMICAL kinetics; Subject Term: DISSOCIATION (Chemistry); Subject Term: ELECTRON temperature; Subject Term: THERMODYNAMIC equilibrium; Subject Term: INTERMEDIATES (Chemistry); Number of Pages: 7p; Illustrations: 2 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.3548874 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58114194&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Hazari, Nilay AU - Luzik, Eddie D. AU - Viggiano, A. A. T1 - Publisher's Note: 'Kinetics following addition of sulfur fluorides to a weakly ionized plasma from 300 to 500 K: Rate constants and product determinations for ion-ion mutual neutralization and thermal electron attachment to SF5, SF3, and SF2' [J. Chem. Phys. 133, 234304 (2010)] JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2011/02/14/ VL - 134 IS - 6 M3 - Article SP - 069901 PB - American Institute of Physics SN - 00219606 KW - PUBLISHERS & publishing KW - CHEMICAL kinetics KW - ADDITION reactions KW - FLUORIDES KW - PLASMA (Ionized gases) KW - ION-ion collisions KW - THERMAL electrons N1 - Accession Number: 58114160; Shuman, Nicholas S. 1 Miller, Thomas M. 1 Hazari, Nilay 2 Luzik, Eddie D. 2,3 Viggiano, A. A. 1; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731-3010, 2: Department of Chemistry, Yale University, New Haven, Connecticut 06520, 3: Department of Chemistry, University of New Haven, New Haven, Connecticut 06516,; Source Info: 2/14/2011, Vol. 134 Issue 6, p069901; Subject Term: PUBLISHERS & publishing; Subject Term: CHEMICAL kinetics; Subject Term: ADDITION reactions; Subject Term: FLUORIDES; Subject Term: PLASMA (Ionized gases); Subject Term: ION-ion collisions; Subject Term: THERMAL electrons; NAICS/Industry Codes: 511130 Book Publishers; NAICS/Industry Codes: 511190 Other publishers; NAICS/Industry Codes: 511199 All Other Publishers; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.3553009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58114160&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lawrence F. Drummy AU - Robert J. Davis AU - Diana L. Moore AU - Michael Durstock AU - Richard A. Vaia AU - Julia W. P. Hsu T1 - Molecular-Scale and Nanoscale Morphology of P3HT:PCBM Bulk Heterojunctions: Energy-Filtered TEM and Low-Dose HREMâ€. JO - Chemistry of Materials JF - Chemistry of Materials Y1 - 2011/02/08/ VL - 23 IS - 3 M3 - Article SP - 907 EP - 912 SN - 08974756 AB - The performance of bulk heterojunction organic photovoltaic devices is critically dependent on the morphology of the active layer. Here we describe the combination of two electron microscopy techniques to quantitatively examine the molecular level structure and mesoscopic domain morphology of the active layer of poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester P3HT:PCBM bulk heterojunction solar cells. Energy-filtered transmission electron microscopy (EFTEM) revealed the nanoscopic, interpenetrating fibrillar structure of the phase separated blend, providing unique assignments of the P3HT-rich and PCBM-rich regions. Low-dose high-resolution electron microscopy (LD-HREM) provided direct images of the P3HT crystals and their orientation within the P3HT-rich domains. The high mobility [010] crystallographic direction of these crystals coincides with the P3HT fibril axis. Additionally, the width of the P3HT crystallite coincides with the width of the P3HT-rich fibril, and is less than that of P3HT crystals in comparably processed pure P3HT films. The local crystallite structure within the blend is commensurate with the constraints of the nanoscale interpenetrating morphology and confirms the intimate relationship between processing protocols, which define the mesoscale phase-separated domains, and the molecular level ordering within the domains, which determines local transport characteristics. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemistry of Materials is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULES KW - NANOCHEMISTRY KW - POLYMERS KW - HETEROJUNCTIONS KW - ELECTRON microscopy KW - ORGANIC electronics KW - CRYSTALLOGRAPHY N1 - Accession Number: 59333708; Lawrence F. Drummy 1 Robert J. Davis 1 Diana L. Moore 1 Michael Durstock 1 Richard A. Vaia 1 Julia W. P. Hsu 1; Affiliation: 1: ‡Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433, United States; Source Info: Feb2011, Vol. 23 Issue 3, p907; Subject Term: MOLECULES; Subject Term: NANOCHEMISTRY; Subject Term: POLYMERS; Subject Term: HETEROJUNCTIONS; Subject Term: ELECTRON microscopy; Subject Term: ORGANIC electronics; Subject Term: CRYSTALLOGRAPHY; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59333708&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rizzetta, Donald P. AU - Visbal, Miguel R. T1 - Numerical Investigation of Plasma-Based Control for Low-Reynolds-Number Airfoil Flows. JO - AIAA Journal JF - AIAA Journal Y1 - 2011/02// VL - 49 IS - 2 M3 - Article SP - 411 EP - 425 SN - 00011452 AB - Large-eddy simulations are carried out to investigate the use of plasma-based actuation for the control of flows over a finite span wing at low Reynolds numbers. The wing section corresponds to the SD7003 airfoil, which is representative of those employed for micro air vehicle applications. Dielectric-barrier-discharge plasma actuators are used to modify the transitional flow and improve aerodynamic performance. Solutions are obtained to the Navier-Stokes equations, which were augmented by source terms used to represent plasma-induced body forces imparted by the actuators on the fluid. Simple phenomenological models provided the body forces generated by the electric field of the plasma surrounding the actuators. The numerical method is based upon a high-fidelity time-implicit scheme, an implicit large-eddy-simulation approach, and domain decomposition in order to perform calculations on a parallel computing platform. Flow at a chord-based Reynolds number of 40,000 is considered in the investigation, which is characterized by laminar separation on the suction surface of the wing at low angles of attack. This separation then promotes transition to a more complex state, which can be modified by the use of plasma actuation. Several aspects of control are examined, including different actuator configurations, alternative plasma-force models, both continuous and pulsed modes of operation, and the magnitude of plasma force required for control. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIR flow KW - AEROFOILS KW - NUMERICAL analysis KW - REYNOLDS number KW - AERODYNAMICS N1 - Accession Number: 58774210; Rizzetta, Donald P. 1 Visbal, Miguel R. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512; Source Info: Feb2011, Vol. 49 Issue 2, p411; Subject Term: AIR flow; Subject Term: AEROFOILS; Subject Term: NUMERICAL analysis; Subject Term: REYNOLDS number; Subject Term: AERODYNAMICS; Number of Pages: 15p; Illustrations: 4 Diagrams, 2 Charts, 23 Graphs; Document Type: Article L3 - 10.2514/1.J050755 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58774210&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maschmann, Matthew R. AU - Zhang, Qiuhong AU - Du, Feng AU - Dai, Liming AU - Baur, Jeffery T1 - Length dependent foam-like mechanical response of axially indented vertically oriented carbon nanotube arrays JO - Carbon JF - Carbon Y1 - 2011/02// VL - 49 IS - 2 M3 - Article SP - 386 EP - 397 SN - 00086223 AB - Abstract: The axial compressive mechanical response of substrate-supported carbon nanotube (CNT) arrays with heights from 35 to 1200μm is evaluated using flat punch nanoindentation with indentation depths to 200μm. The compressive behavior is consistent with that of an open-cell foam material with array height playing a role similar to that of occupation density for traditional foam. Mechanical yielding of all arrays is initiated between 0.03 and 0.12 strain and arises from localized coordinated plastic buckling. For intermediate CNT array heights between 190 and 650μm, buckle formation is highly periodic, with characteristic wavelengths between 3 and 6μm. Buckle formation produced substantial force oscillations in both the compressive and lateral directions. The compressive elastic modulus of the arrays is obtained as a continuous function of penetration depth and attains a value between 10 and 20MPa for all arrays during mechanical yield. A qualitative model based upon concepts of cellular foam geometry is advanced to explain the observed CNT buckling behavior. [ABSTRACT FROM AUTHOR] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - FOAMED materials KW - MECHANICAL chemistry KW - OSCILLATIONS KW - INDENTATION (Materials science) KW - WAVELENGTHS KW - BUCKLING (Mechanics) KW - PENETRATION mechanics KW - MATHEMATICAL models N1 - Accession Number: 55390158; Maschmann, Matthew R. 1,2 Zhang, Qiuhong 1,3 Du, Feng 4 Dai, Liming 4 Baur, Jeffery 1; Email Address: Jeff.Baur@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Universal Technology Corporation, Dayton, Ohio 45432, USA 3: University of Dayton Research Institute, University of Dayton, Dayton, Ohio 45469, USA 4: Department of Chemical Engineering, Case Western University, Cleveland, Ohio 44106, USA; Source Info: Feb2011, Vol. 49 Issue 2, p386; Subject Term: CARBON nanotubes; Subject Term: FOAMED materials; Subject Term: MECHANICAL chemistry; Subject Term: OSCILLATIONS; Subject Term: INDENTATION (Materials science); Subject Term: WAVELENGTHS; Subject Term: BUCKLING (Mechanics); Subject Term: PENETRATION mechanics; Subject Term: MATHEMATICAL models; NAICS/Industry Codes: 326150 Urethane and Other Foam Product (except Polystyrene) Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.carbon.2010.09.034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55390158&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Park, J.H. AU - Mitchel, W.C. AU - Grazulis, L. AU - Eyink, K. AU - Smith, H.E. AU - Hoelscher, J.E. T1 - Role of extended defected SiC interface layer on the growth of epitaxial graphene on SiC JO - Carbon JF - Carbon Y1 - 2011/02// VL - 49 IS - 2 M3 - Article SP - 631 EP - 635 SN - 00086223 AB - Abstract: An extended layer of defected SiC has been observed in SiC subjected to heat treatments at 850 and 1050°C prior to growth of graphene by thermal decomposition. This layer is found to strongly affect the graphene thickness, surface morphology, and Raman spectrum of graphene grown on it. By comparing the strength of the XPS signal associated with this layer it was found that the samples with stronger defected layer signal had the least number of surface pits but also showed the increase in Raman D to G band ratio. The shifts in 2D and G peaks are associated with varying amounts of strain and unintentional doping induced by the SiC defected interface layer, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPITAXY KW - SILICON carbide KW - GRAPHENE KW - SURFACE chemistry KW - RAMAN effect KW - DECOMPOSITION (Chemistry) KW - X-ray photoelectron spectroscopy N1 - Accession Number: 55390290; Park, J.H.; Email Address: jeongho.park@wpafb.af.mil Mitchel, W.C. 1 Grazulis, L. 1 Eyink, K. 1 Smith, H.E. 1 Hoelscher, J.E. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXPS, Wright Patterson AFB, OH 45433-7707, USA; Source Info: Feb2011, Vol. 49 Issue 2, p631; Subject Term: EPITAXY; Subject Term: SILICON carbide; Subject Term: GRAPHENE; Subject Term: SURFACE chemistry; Subject Term: RAMAN effect; Subject Term: DECOMPOSITION (Chemistry); Subject Term: X-ray photoelectron spectroscopy; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.carbon.2010.10.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55390290&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Noren, Carrie AU - Vorobieff, Peter AU - Truman, C. Randall AU - Madden, Timothy J. T1 - Mixing in a supersonic COIL laser: influence of trip jets. JO - Experiments in Fluids JF - Experiments in Fluids Y1 - 2011/02// VL - 50 IS - 2 M3 - Article SP - 443 EP - 455 SN - 07234864 AB - We present an experimental study of a supersonic nozzle with supersonic iodine injection. This nozzle simulates Chemical Oxygen Iodine Laser (COIL) flow conditions with non-reacting, cold flows. During the experiments, we used a laser sheet near 565 nm to excite fluorescence in iodine, which we imaged with an intensified and gated CCD camera. We captured streamwise and semi-spanwise (oblique-view) images, with fluorescence revealing the material injected into the flow. We identified the flow structures in the images, and produced quantitative characterizations of the flow morphology and of the mixing between the primary and injected flow. We considered four injection scenarios. The first scenario includes a single injector positioned downstream of the nozzle throat. To enhance the mixing between the flows, trip jets are placed in the wake of the single jet. The sonic trip jets, significantly smaller than the primary supersonic iodine jet, are intended to destabilize the counter-rotating vortex pair (CRVP) of the primary jet. We compare three different trip jet configurations for their ability to enhance mixing between the oxygen and iodine flows. [ABSTRACT FROM AUTHOR] AB - Copyright of Experiments in Fluids is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 57530405; Noren, Carrie 1; Email Address: Carrie.Noren@kirtland.af.mil Vorobieff, Peter 2; Email Address: kalmoth@unm.edu Truman, C. Randall 2; Email Address: truman@unm.edu Madden, Timothy J. 1; Email Address: timothy.madden@kirtland.af.mil; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate Kirtland AFB, Albuquerque, NM 87117, USA 2: Department of Mechanical Engineering, The University of New Mexico MSC01 1150, Albuquerque, NM 87131, USA; Source Info: Feb2011, Vol. 50 Issue 2, p443; Number of Pages: 13p; Illustrations: 1 Diagram, 11 Graphs; Document Type: Article L3 - 10.1007/s00348-010-0927-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57530405&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gunderson, S. AU - Fultz, G. AU - Snyder, C. AU - Wright, J. AU - Gschwender, L. AU - Heidger, S. T1 - The effect of water content on the dielectric strength of polyalphaolefin (PAO) coolants. JO - IEEE Transactions on Dielectrics & Electrical Insulation JF - IEEE Transactions on Dielectrics & Electrical Insulation Y1 - 2011/02//2/ 1/2011 VL - 18 IS - 1 M3 - Article SP - 295 EP - 302 SN - 10709878 AB - Many variables can affect the dielectric strength of coolants and insulating fluids including particulates, water content, temperature, viscosity, and pressure. The present paper evaluates the effects of dissolved water content, adjusted in a controlled manner, on the dielectric strength and the variability of breakdown voltages in synthetic polyalphaolefin (PAO) MIL-PRF-87252 coolants obtained from three different suppliers. Additionally, the effect on dielectric strength of using nitrogen gas versus air for the removal of water is evaluated. The results indicate that the dielectric strength of the fluids decreases by up to 80% over a range of 0 to 70 ppm water content. The variability in breakdown voltage generally increases with increasing water content for all of the samples tested. These results indicate the notable effects of water at concentrations below the MIL-PRF-87252 specified acceptable limit of 50 ppm. The effect on the dielectric strength of using two different sparging gases for the removal of water, dry air or dry nitrogen, was irrelevant when compared at similar water contents. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Dielectrics & Electrical Insulation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRICS KW - ALKENES KW - REFRIGERANTS KW - WATER KW - ELECTRIC insulators & insulation KW - TEMPERATURE effect KW - PRESSURE KW - BREAKDOWN voltage KW - VISCOSITY KW - Breakdown voltage KW - coolant KW - Coolants KW - Dielectric breakdown KW - dielectric strength KW - high pressure microwave switch KW - Minerals KW - Petroleum KW - Switches KW - Viscosity KW - water content N1 - Accession Number: 70234663; Gunderson, S. 1 Fultz, G. 1 Snyder, C. 1 Wright, J. 2 Gschwender, L. 2 Heidger, S. 3; Affiliation: 1: University of Dayton Research Institute 300 College Park Dayton, OH 45469, USA 2: Air Force Research Laboratory Materials and Manufacturing Directorate Wright-Patterson AFB, OH 45433, USA 3: Air Force Research Laboratory Directed Energy Directorate Kirtland AFB, NM 87117; Source Info: 2/ 1/2011, Vol. 18 Issue 1, p295; Subject Term: DIELECTRICS; Subject Term: ALKENES; Subject Term: REFRIGERANTS; Subject Term: WATER; Subject Term: ELECTRIC insulators & insulation; Subject Term: TEMPERATURE effect; Subject Term: PRESSURE; Subject Term: BREAKDOWN voltage; Subject Term: VISCOSITY; Author-Supplied Keyword: Breakdown voltage; Author-Supplied Keyword: coolant; Author-Supplied Keyword: Coolants; Author-Supplied Keyword: Dielectric breakdown; Author-Supplied Keyword: dielectric strength; Author-Supplied Keyword: high pressure microwave switch; Author-Supplied Keyword: Minerals; Author-Supplied Keyword: Petroleum; Author-Supplied Keyword: Switches; Author-Supplied Keyword: Viscosity; Author-Supplied Keyword: water content; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 335930 Wiring device manufacturing; NAICS/Industry Codes: 326290 Other rubber product manufacturing; Number of Pages: 0p; Document Type: Article L3 - 10.1109/TDEI.2011.5704521 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70234663&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Rao, Xing AU - Hammack, Steve AU - Lee, Tonghun AU - Carter, Campbell AU - Matveev, Igor B. T1 - Correction to “Combustion Dynamics of Plasma-Enhanced Premixed and Nonpremixed Flames”. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2011/02//02/01/2011 VL - 39 IS - 2 M3 - Erratum SP - 822 EP - 822 SN - 00933813 KW - COMBUSTION KW - FLAME KW - PLASMA (Ionized gases) KW - PERIODICALS -- Articles KW - SCIENCE -- Periodicals N1 - Accession Number: 58006732; Rao, Xing 1 Hammack, Steve 1 Lee, Tonghun 1 Carter, Campbell 2 Matveev, Igor B. 3; Affiliation: 1: Michigan State University, East Lansing, MI, USA 2: Air Force Research Laboratory, Wright–Patterson AFB, OH, USA 3: Applied Plasma Technologies, McLean, VA, USA; Source Info: 02/01/2011, Vol. 39 Issue 2, p822; Subject Term: COMBUSTION; Subject Term: FLAME; Subject Term: PLASMA (Ionized gases); Subject Term: PERIODICALS -- Articles; Subject Term: SCIENCE -- Periodicals; Number of Pages: 1p; Document Type: Erratum L3 - 10.1109/TPS.2011.2106694 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58006732&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Krishnamurthy, Srini AU - Zhi Gang Yu AU - Gonzalez, Leonel P. AU - Guha, Shekhar T1 - Temperature- and wavelength-dependent two-photon and free-carrier absorption in GaAs, InP, GaInAs, and InAsP. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/02// VL - 109 IS - 3 M3 - Article SP - 033102 PB - American Institute of Physics SN - 00218979 AB - We present full-band structure calculations of temperature- and wavelength-dependent two-photon absorption coefficients and free-carrier absorption cross sections in GaAs, InP, and 0.92 eV-band gap Ga64In36As and InP60As40 alloys. The calculated coefficient decreases with increasing wavelength and band gap but increases with temperature. Using detailed band structure analysis, we identify various contributions to the free-carrier absorption in GaAs and InP. Although the free-carrier absorption is found to arise predominantly from hole absorption, we show that direct absorption by excited electrons is possible, leading to an enhanced free-carrier absorption coefficient. This excited state absorption could be exploited to modulate the transmission of light at communication wavelengths (of 1.33 or 1.55 μm) with, for example, the more commonly available 0.8 μm diode laser. We further show that the high-intensity transmission calculated with our values of nonlinear parameters in GaAs agrees very well with the measured values. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM arsenide KW - INDIUM phosphide KW - PHOTONS KW - WAVELENGTHS KW - ABSORPTION N1 - Accession Number: 58114094; Krishnamurthy, Srini 1; Email Address: srini@sri.com Zhi Gang Yu 1 Gonzalez, Leonel P. 2 Guha, Shekhar 2; Affiliation: 1: SRI International, 333 Ravenswood Avenue, Menlo Park, California 94025, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, Dayton, Ohio 45433, USA; Source Info: Feb2011, Vol. 109 Issue 3, p033102; Subject Term: GALLIUM arsenide; Subject Term: INDIUM phosphide; Subject Term: PHOTONS; Subject Term: WAVELENGTHS; Subject Term: ABSORPTION; Number of Pages: 9p; Illustrations: 2 Charts, 11 Graphs; Document Type: Article L3 - 10.1063/1.3533775 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58114094&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Welna, Daniel T. AU - Qu, Liangti AU - Taylor, Barney E. AU - Dai, Liming AU - Durstock, Michael F. T1 - Vertically aligned carbon nanotube electrodes for lithium-ion batteries JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2011/02// VL - 196 IS - 3 M3 - Article SP - 1455 EP - 1460 SN - 03787753 AB - Abstract: As portable electronics become more advanced and alternative energy demands become more prevalent, the development of advanced energy storage technologies is becoming ever more critical in today''s society. In order to develop higher power and energy density batteries, innovative electrode materials that provide increased storage capacity, greater rate capabilities, and good cyclability must be developed. Nanostructured materials are gaining increased attention because of their potential to mitigate current electrode limitations. Here we report on the use of vertically aligned multi-walled carbon nanotubes (VA-MWNTs) as the active electrode material in lithium-ion batteries. At low specific currents, these VA-MWNTs have shown high reversible specific capacities (up to 782mAhg−1 at 57mAg−1). This value is twice that of the theoretical maximum for graphite and ten times more than their non-aligned equivalent. Interestingly, at very high discharge rates, the VA-MWNT electrodes retain a moderate specific capacity due to their aligned nature (166mAhg−1 at 26Ag−1). These results suggest that VA-MWNTs are good candidates for lithium-ion battery electrodes which require high rate capability and capacity. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRODES KW - LITHIUM-ion batteries KW - CARBON nanotubes KW - NANOSTRUCTURED materials KW - ENERGY storage KW - RENEWABLE energy sources KW - Battery KW - Carbon nanotube KW - Energy storage KW - Lithium-ion KW - Nanostructured electrode N1 - Accession Number: 54880079; Welna, Daniel T. 1,2 Qu, Liangti 3 Taylor, Barney E. 1,2 Dai, Liming 4; Email Address: liming.dai@case.edu Durstock, Michael F. 1; Email Address: Michael.Durstock@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, AFRL/RX, Wright-Patterson AFB, OH 45433, USA 2: UTC, Inc., Beavercreek, OH 45431, USA 3: Department of Chemistry, Beijing Institute of Technology, 100081 Beijing, China 4: Department of Chemical Engineering, Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44146 USA; Source Info: Feb2011, Vol. 196 Issue 3, p1455; Subject Term: ELECTRODES; Subject Term: LITHIUM-ion batteries; Subject Term: CARBON nanotubes; Subject Term: NANOSTRUCTURED materials; Subject Term: ENERGY storage; Subject Term: RENEWABLE energy sources; Author-Supplied Keyword: Battery; Author-Supplied Keyword: Carbon nanotube; Author-Supplied Keyword: Energy storage; Author-Supplied Keyword: Lithium-ion; Author-Supplied Keyword: Nanostructured electrode; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jpowsour.2010.08.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54880079&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Douglas, E.A. AU - Chang, C.Y. AU - Cheney, D.J. AU - Gila, B.P. AU - Lo, C.F. AU - Lu, Liu AU - Holzworth, R. AU - Whiting, P. AU - Jones, K. AU - Via, G.D. AU - Kim, Jinhyung AU - Jang, Soohwan AU - Ren, Fan AU - Pearton, S.J. T1 - AlGaN/GaN High Electron Mobility Transistor degradation under on- and off-state stress JO - Microelectronics Reliability JF - Microelectronics Reliability Y1 - 2011/02// VL - 51 IS - 2 M3 - Article SP - 207 EP - 211 SN - 00262714 AB - Abstract: AlGaN/GaN High Electron Mobility Transistors (HEMTs) with various gate lengths have been step-stressed under both on- and off-state conditions. On-state, high power stress tests were performed on 0.17μm gate length HEMTs and a single 5μm spaced TLM pattern. Significant degradation of the submicron HEMTs as compared to the excellent stability of the TLM patterns under the same stress conditions reveal that the Schottky contact is the source of degradation. Off-state stress showed a linear relationship between the critical degradation voltage and gate length, though two dimensional ATLAS/Blaze simulations show that the maximum electric field is similar for all gate lengths. Additionally, as the drain bias was increased, the critical voltage decreased. However, the cumulative bias between the gate and drain remained constant, further indicating that the electric field is the main mechanism for degradation. [Copyright &y& Elsevier] AB - Copyright of Microelectronics Reliability is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MODULATION-doped field-effect transistors KW - GALLIUM nitride KW - STRAINS & stresses (Mechanics) KW - ELECTRIC potential KW - SIMULATION methods & models KW - ELECTRIC fields N1 - Accession Number: 57684596; Douglas, E.A. 1 Chang, C.Y. 1 Cheney, D.J. 2 Gila, B.P. 1 Lo, C.F. 3 Lu, Liu 3 Holzworth, R. 1 Whiting, P. 1 Jones, K. 1 Via, G.D. 4 Kim, Jinhyung 5 Jang, Soohwan 5 Ren, Fan 3 Pearton, S.J. 1; Email Address: spear@mse.ufl.edu; Affiliation: 1: Department of Materials Science & Engineering, University of Florida, Gainesville, FL 32611, United States 2: Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL 32611, United States 3: Department of Chemical Engineering, University of Florida, Gainesville, FL 32611, United States 4: Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, United States 5: Department of Chemical Engineering, Dankook University, Yongin 448-701, Republic of Korea; Source Info: Feb2011, Vol. 51 Issue 2, p207; Subject Term: MODULATION-doped field-effect transistors; Subject Term: GALLIUM nitride; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ELECTRIC potential; Subject Term: SIMULATION methods & models; Subject Term: ELECTRIC fields; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.microrel.2010.09.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57684596&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schubert, Christine M. AU - Thorsen, Steven N. AU - Oxley, Mark E. T1 - The ROC manifold for classification systems JO - Pattern Recognition JF - Pattern Recognition Y1 - 2011/02// VL - 44 IS - 2 M3 - Article SP - 350 EP - 362 SN - 00313203 AB - Abstract: We define the ROC manifold and CC manifold as duals in a given sense. Their analysis is required to describe the classification system. We propose a mathematical definition based on vector space methods to describe both. The ROC manifolds for n-class classification systems fully describe each system in terms of its misclassifications and, by conjunction, its correct classifications. Optimal points which minimize misclassifications can be identified even when costs and prior probabilities differ. These manifolds can be used to determine the usefulness of a classification system based on a given performance criterion. Many performance functionals (such as summary statistics) preferred for CC manifolds can also be evaluated using the ROC manifold (under certain constraints). Examples using the ROC manifold and performance functionals to compete classification systems are demonstrated with simulated and applied disease detection data. [ABSTRACT FROM AUTHOR] AB - Copyright of Pattern Recognition is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RECEIVER operating characteristic curves KW - MANIFOLDS (Mathematics) KW - CLASSIFICATION KW - MATHEMATICAL analysis KW - VECTOR spaces KW - PROBABILITY theory KW - STATISTICS KW - Bayes cost KW - Classification KW - Multiple classes KW - Receiver operating characteristic (ROC) curve KW - ROC manifold N1 - Accession Number: 54482322; Schubert, Christine M. 1; Email Address: christine.schubertkabban@afit.edu Thorsen, Steven N. 2; Email Address: Steven.Thorsen@usafa.edu Oxley, Mark E. 1; Email Address: Mark.Oxley@afit.edu; Affiliation: 1: Department of Mathematics and Statistics, Graduate School of Engineering and Management, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433-7765, United States 2: Department of Mathematical Sciences, United States Air Force Academy, 2354 Fairchild Drive, Colorado Springs, CO 80840, United States; Source Info: Feb2011, Vol. 44 Issue 2, p350; Subject Term: RECEIVER operating characteristic curves; Subject Term: MANIFOLDS (Mathematics); Subject Term: CLASSIFICATION; Subject Term: MATHEMATICAL analysis; Subject Term: VECTOR spaces; Subject Term: PROBABILITY theory; Subject Term: STATISTICS; Author-Supplied Keyword: Bayes cost; Author-Supplied Keyword: Classification; Author-Supplied Keyword: Multiple classes; Author-Supplied Keyword: Receiver operating characteristic (ROC) curve; Author-Supplied Keyword: ROC manifold; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.patcog.2010.07.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54482322&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Basu, B. AU - Jasperse, J. R. AU - Lund, E. J. AU - Grossbard, N. T1 - Origin of ion-cyclotron turbulence in the downward Birkeland current region. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2011/02// VL - 18 IS - 2 M3 - Article SP - 022901 PB - American Institute of Physics SN - 1070664X AB - Linear stability analysis of the electron velocity distributions, which are observed in the FAST satellite measurements in the downward Birkeland current region of the magnetosphere, is presented. The satellite-measured particle (electrons and protons) velocity distributions are fitted with analytic functions and the dispersion relation is derived in terms of the plasma dispersion functions associated with those distribution functions. Numerical solutions of the dispersion relation show that the bump-on-tail structure of the electron velocity distribution can excite electrostatic ion-cyclotron instabilities by the Landau resonance mechanism. Nonlinear evolution of these instabilities may explain the observed electrostatic ion-cyclotron turbulence in the Birkeland current region. Excitation of other types of instabilities by the fitted electron velocity distributions and their relevance are also discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CYCLOTRONS KW - TURBULENCE KW - STABILITY (Mechanics) KW - LINEAR models (Statistics) KW - ELECTRON distribution KW - ARTIFICIAL satellites KW - MAGNETOSPHERE N1 - Accession Number: 58700660; Basu, B. 1 Jasperse, J. R. 1 Lund, E. J. 2 Grossbard, N. 3; Affiliation: 1: Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731, 2: Space Science Center, University of New Hampshire, Durham, New Hampshire 03824, 3: Institute for Scientific Research, Boston College, Chestnut Hill, Massachusetts 02467,; Source Info: Feb2011, Vol. 18 Issue 2, p022901; Subject Term: CYCLOTRONS; Subject Term: TURBULENCE; Subject Term: STABILITY (Mechanics); Subject Term: LINEAR models (Statistics); Subject Term: ELECTRON distribution; Subject Term: ARTIFICIAL satellites; Subject Term: MAGNETOSPHERE; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; Number of Pages: 9p; Illustrations: 7 Graphs; Document Type: Article L3 - 10.1063/1.3552156 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58700660&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McClung, A.J.W. AU - Tandon, G.P. AU - Goecke, K.E. AU - Baur, J.W. T1 - Non-contact technique for characterizing full-field surface deformation of shape memory polymers at elevated and room temperatures JO - Polymer Testing JF - Polymer Testing Y1 - 2011/02// VL - 30 IS - 1 M3 - Article SP - 140 EP - 149 SN - 01429418 AB - Abstract: Thermally activated shape memory polymers (SMPs) can display modulus changes of approximately three orders of magnitude in transitioning from the high modulus, “glassy” state below the glass transition temperature (T g) to the low modulus, “rubbery” state above the T g. In the high temperature region, SMPs can achieve strain levels well above 100%. Their complex behavior includes large modulus changes to as low as ∼1 MPa, extremely high strain levels, and path dependent properties, thus precluding the use of traditional strain gages and low-contact force extensometers. The present study presents a comparison of thermomechanical testing techniques developed to characterize the material behavior of SMPs. Specifically, the performance of strain measurements using contact methods (clip-on extensometers and adhesive strain gages) are compared to non-contact methods (laser extensometer and digital image correlation). An MTS environmental chamber with an observation window allows for non-contact optical measurements during testing. A series of tensile tests are performed on a commercial SMP (with a T g of ∼105 °C) at 25 °C and at 130 °C. It is observed that the clip-on extensometer significantly affects the SMP behavior even in the low temperature, high modulus state. Overall, the laser extensometer provides a robust method for controlling the axial strain in the gage section of the samples at moderate strain rates. The digital image correlation allows for full field measurement of both axial and transverse strains of SMPs over a range of temperatures and strain rates. [ABSTRACT FROM AUTHOR] AB - Copyright of Polymer Testing is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEFORMATION of surfaces KW - SHAPE memory effect KW - POLYMERS -- Mechanical properties KW - LOW temperatures KW - GLASS transition temperature KW - METALS -- Thermomechanical properties KW - EXTENSOMETER KW - DIGITAL image processing KW - POISSON'S ratio KW - Digital image correlation KW - Hencky strain KW - Non-contact methods KW - Poisson's ratio KW - Shape memory polymers N1 - Accession Number: 57164045; McClung, A.J.W. 1,2; Email Address: mcclunga2@asme.org Tandon, G.P. 1,3 Goecke, K.E. 1,3 Baur, J.W. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA 2: National Research Council, USA 3: University of Dayton Research Ins., 300 College Park, Dayton, OH 45469, USA; Source Info: Feb2011, Vol. 30 Issue 1, p140; Subject Term: DEFORMATION of surfaces; Subject Term: SHAPE memory effect; Subject Term: POLYMERS -- Mechanical properties; Subject Term: LOW temperatures; Subject Term: GLASS transition temperature; Subject Term: METALS -- Thermomechanical properties; Subject Term: EXTENSOMETER; Subject Term: DIGITAL image processing; Subject Term: POISSON'S ratio; Author-Supplied Keyword: Digital image correlation; Author-Supplied Keyword: Hencky strain; Author-Supplied Keyword: Non-contact methods; Author-Supplied Keyword: Poisson's ratio; Author-Supplied Keyword: Shape memory polymers; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.polymertesting.2010.11.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57164045&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Squires, Matthew B. AU - Stickney, James A. AU - Carlson, Evan J. AU - Baker, Paul M. AU - Buchwald, Walter R. AU - Wentzell, Sandra AU - Miller, Steven M. T1 - Atom chips on direct bonded copper substrates. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2011/02// VL - 82 IS - 2 M3 - Article SP - 023101 PB - American Institute of Physics SN - 00346748 AB - We present the use of direct bonded copper (DBC) for the straightforward fabrication of high power atom chips. Atom chips using DBC have several benefits: excellent copper/substrate adhesion, high purity, thick (>100 μm) copper layers, high substrate thermal conductivity, high aspect ratio wires, the potential for rapid (<8 h) fabrication, and three-dimensional atom chip structures. Two mask options for DBC atom chip fabrication are presented, as well as two methods for etching wire patterns into the copper layer. A test chip, able to support 100 A of current for 2 s without failing, is used to determine the thermal impedance of the DBC. An assembly using two DBC atom chips is used to magnetically trap laser cooled 87Rb atoms. The wire aspect ratio that optimizes the magnetic field gradient as a function of power dissipation is determined to be 0.84:1 (height:width). [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTEGRATED circuits KW - ATOMS KW - COPPER KW - ADHESION KW - THERMAL conductivity KW - MAGNETIC fields KW - SUBSTRATES (Materials science) N1 - Accession Number: 58700522; Squires, Matthew B. 1 Stickney, James A. 1 Carlson, Evan J. 1 Baker, Paul M. 1 Buchwald, Walter R. 1 Wentzell, Sandra 1 Miller, Steven M. 1; Affiliation: 1: Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731,; Source Info: Feb2011, Vol. 82 Issue 2, p023101; Subject Term: INTEGRATED circuits; Subject Term: ATOMS; Subject Term: COPPER; Subject Term: ADHESION; Subject Term: THERMAL conductivity; Subject Term: MAGNETIC fields; Subject Term: SUBSTRATES (Materials science); NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 7p; Illustrations: 2 Color Photographs, 4 Black and White Photographs, 2 Graphs; Document Type: Article L3 - 10.1063/1.3529434 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58700522&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rahy, Abdelaziz AU - Rguig, Touria AU - Cho, Sung June AU - Bunker, Christopher E. AU - Yang, Duck Joo T1 - Polar solvent soluble and hydrogen absorbing polyaniline nanofibers JO - Synthetic Metals JF - Synthetic Metals Y1 - 2011/02// VL - 161 IS - 3/4 M3 - Article SP - 280 EP - 284 SN - 03796779 AB - Abstract: Polar solvent soluble polyaniline nanofibers were synthesized from aniline in the presence of organic additive such as sucrose, C12H22O11 or sucralose, C12H19Cl3O8, by oxidative polymerization. These nanofibers synthesized in the presence of the additive were soluble in water as well as in other polar organic solvents such as methanol, ethanol, DMF and DMSO. We found the nanofibers have hydrogen absorption capability as high as 4.3% at 298K and 20atm. The role of the sucrose why it makes the polyaniline nanofibers become soluble and absorb hydrogen is explained, and a hypothesis is proposed about the role of sucrose and how hydrogen can be stored. [ABSTRACT FROM AUTHOR] AB - Copyright of Synthetic Metals is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOFIBERS KW - SOLUTION (Chemistry) KW - CONDUCTING polymers KW - ORGANIC synthesis (Chemistry) KW - ANILINE KW - FOOD additives KW - POLYMERIZATION KW - ABSORPTION KW - Hydrogen storage KW - Nanofibers KW - Polyaniline N1 - Accession Number: 57516494; Rahy, Abdelaziz 1 Rguig, Touria 1 Cho, Sung June 2 Bunker, Christopher E. 3 Yang, Duck Joo 1; Email Address: djyang@utdallas.edu; Affiliation: 1: The Alan G. MacDiarmid NanoTech Institute, Department of Chemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, TX 75080, United States 2: Clean Energy Technology Laboratory, Center for Functional Nano Fine Chemicals, Department of Applied Chemical Engineering, Chonnam National University, Yong Bong 300, Buk-gu, Gwang-ju 500-757, Republic of Korea 3: Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, United States; Source Info: Feb2011, Vol. 161 Issue 3/4, p280; Subject Term: NANOFIBERS; Subject Term: SOLUTION (Chemistry); Subject Term: CONDUCTING polymers; Subject Term: ORGANIC synthesis (Chemistry); Subject Term: ANILINE; Subject Term: FOOD additives; Subject Term: POLYMERIZATION; Subject Term: ABSORPTION; Author-Supplied Keyword: Hydrogen storage; Author-Supplied Keyword: Nanofibers; Author-Supplied Keyword: Polyaniline; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.synthmet.2010.11.036 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57516494&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Navarathne, Daminda AU - Ner, Yogesh AU - Jain, Menka AU - Grote, James G. AU - Sotzing, Gregory A. T1 - Fabrication of DNA–magnetite hybrid nanofibers for water detoxification JO - Materials Letters JF - Materials Letters Y1 - 2011/01/31/ VL - 65 IS - 2 M3 - Article SP - 219 EP - 221 SN - 0167577X AB - Abstract: DNA–magnetite hybrid nanofibers were fabricated by electrospinning a spin dope consisting of oleic acid coated magnetite nanoparticles and DNA–CTMA in ethanol/chloroform mixed solvent. The fabricated nanofibers exhibit superparamagnetic behaviour owing to embedded magnetite nanoparticles. It is demonstrated that these nanofibers can be used as effective detoxification materials in aqueous media as a combined result of DNA''s affinity to both organic and inorganic toxicants, high surface area of the nanofibers and the fast and easy separation due to magnetite nanoparticles under external magnetic field. In addition to detoxification, these novel hybrid nanofibers have potential applications in many technological areas such as catalysis and drug delivery. [Copyright &y& Elsevier] AB - Copyright of Materials Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROFABRICATION KW - DNA KW - MAGNETITE KW - NANOFIBERS KW - WATER KW - POISONS KW - OLEIC acid KW - ELECTROSPINNING KW - Hybrid materials KW - Magnetic materials KW - Nanofibers KW - Nanomaterials KW - Water detoxification N1 - Accession Number: 55617375; Navarathne, Daminda 1 Ner, Yogesh 1 Jain, Menka 2 Grote, James G. 3 Sotzing, Gregory A. 1; Email Address: sotzing@mail.ims.uconn.edu; Affiliation: 1: Department of Chemistry and the Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT 06269-3136, USA 2: Department of Physics, Institute of Materials Science, University of Connecticut, Storrs, CT 06269-3136, USA 3: US Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXPS, Wright-Patterson Air Force Base, OH 45433-7707, USA; Source Info: Jan2011, Vol. 65 Issue 2, p219; Subject Term: MICROFABRICATION; Subject Term: DNA; Subject Term: MAGNETITE; Subject Term: NANOFIBERS; Subject Term: WATER; Subject Term: POISONS; Subject Term: OLEIC acid; Subject Term: ELECTROSPINNING; Author-Supplied Keyword: Hybrid materials; Author-Supplied Keyword: Magnetic materials; Author-Supplied Keyword: Nanofibers; Author-Supplied Keyword: Nanomaterials; Author-Supplied Keyword: Water detoxification; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.matlet.2010.09.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55617375&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiao, C.Q. AU - Irikura, K.K. AU - Adams, S.F. AU - Garscadden, A. T1 - Electron ionization and gas-phase ion molecule reactions of methylcyclohexane JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2011/01/30/ VL - 300 IS - 1 M3 - Article SP - 2 EP - 11 SN - 13873806 AB - Abstract: Absolute cross sections for electron ionization of methylcyclohexane (MCH, C7H14) are measured as a function of the electron energy in a range of 10–200eV. The electron ionization of MCH produces the parent ion C7H14+ ment ions C6H11+ and C4H7+ as the predominant product ions at most of the electron energies studied. Reactions between selected hydrocarbon ions with the neutral MCH molecule, mainly via hydride transfer, charge transfer and H2− transfer mechanisms, are studied. Absolute rate constants are reported, and the correlations between the reactivities and the thermochemical data of the reactions are discussed. The Binary-Encounter-Bethe method is applied to MCH to provide a theoretical comparison to the sum of the measured ionization cross sections. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON impact ionization KW - METHYLCYCLOHEXENONES KW - CYCLOALKANES KW - HYDROCARBONS KW - CHARGE transfer KW - FOURIER transform spectroscopy KW - MASS spectrometry KW - Binary-Encounter-Bethe model KW - Cycloalkane KW - Electron ionization KW - Fourier-transform mass spectrometry KW - Ion molecule reaction KW - Methylcyclohexane N1 - Accession Number: 57860610; Jiao, C.Q. 1 Irikura, K.K. 2 Adams, S.F. 3; Email Address: steven.adams@wpafb.af.mil Garscadden, A. 4; Affiliation: 1: UES, Inc., Dayton, OH 45432-1894, United States 2: National Institute of Standards and Technology, Gaithersburg, MD 20899-8320, United States 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7251, United States 4: Air Force Institute of Technology, Wright-Patterson AFB, OH 45433-7765, United States; Source Info: Jan2011, Vol. 300 Issue 1, p2; Subject Term: ELECTRON impact ionization; Subject Term: METHYLCYCLOHEXENONES; Subject Term: CYCLOALKANES; Subject Term: HYDROCARBONS; Subject Term: CHARGE transfer; Subject Term: FOURIER transform spectroscopy; Subject Term: MASS spectrometry; Author-Supplied Keyword: Binary-Encounter-Bethe model; Author-Supplied Keyword: Cycloalkane; Author-Supplied Keyword: Electron ionization; Author-Supplied Keyword: Fourier-transform mass spectrometry; Author-Supplied Keyword: Ion molecule reaction; Author-Supplied Keyword: Methylcyclohexane; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijms.2010.11.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57860610&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sun, Xiaobo AU - Zimmermann, Carolyn M. AU - Jackson, Glen P. AU - Bunker, Christopher E. AU - Harrington, Peter B. T1 - Classification of jet fuels by fuzzy rule-building expert systems applied to three-way data by fast gas chromatography—fast scanning quadrupole ion trap mass spectrometry JO - Talanta JF - Talanta Y1 - 2011/01/30/ VL - 83 IS - 4 M3 - Article SP - 1260 EP - 1268 SN - 00399140 AB - Abstract: A fast method that can be used to classify unknown jet fuel types or detect possible property changes in jet fuel physical properties is of paramount interest to national defense and the airline industries. While fast gas chromatography (GC) has been used with conventional mass spectrometry (MS) to study jet fuels, fast GC was combined with fast scanning MS and used to classify jet fuels into lot numbers or origin for the first time by using fuzzy rule-building expert system (FuRES) classifiers. In the process of building classifiers, the data were pretreated with and without wavelet transformation and evaluated with respect to performance. Principal component transformation was used to compress the two-way data images prior to classification. Jet fuel samples were successfully classified with 99.8±0.5% accuracy for both with and without wavelet compression. Ten bootstrapped Latin partitions were used to validate the generalized prediction accuracy. Optimized partial least squares (o-PLS) regression results were used as positively biased references for comparing the FuRES prediction results. The prediction results for the jet fuel samples obtained with these two methods were compared statistically. The projected difference resolution (PDR) method was also used to evaluate the fast GC and fast MS data. Two batches of aliquots of ten new samples were prepared and run independently 4 days apart to evaluate the robustness of the method. The only change in classification parameters was the use of polynomial retention time alignment to correct for drift that occurred during the 4-day span of the two collections. FuRES achieved perfect classifications for four models of uncompressed three-way data. This fast GC/fast MS method furnishes characteristics of high speed, accuracy, and robustness. This mode of measurement may be useful as a monitoring tool to track changes in the chemical composition of fuels that may also lead to property changes. [ABSTRACT FROM AUTHOR] AB - Copyright of Talanta is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PENNING trap mass spectrometry KW - JET planes -- Fuel KW - FUZZY expert systems KW - GAS chromatography KW - QUADRUPOLES KW - AIRLINE industry KW - MASS spectrometry KW - ALIQUOT sequences KW - Chemometrics KW - Classification KW - Fast scanning KW - Fuzzy rule-building expert system KW - Gas chromatography KW - Jet fuel KW - Quadrupole ion trap mass spectrometry N1 - Accession Number: 57297308; Sun, Xiaobo 1 Zimmermann, Carolyn M. 1 Jackson, Glen P. 1 Bunker, Christopher E. 2 Harrington, Peter B. 1; Email Address: peter.harrington@ohio.edu; Affiliation: 1: Center for Intelligent Chemical Instrumentation, Clippinger Laboratories, Department Of Chemistry and Biochemistry, Ohio University, Athens, OH 45701, USA 2: Air Force Research Laboratory, Propulsion Directorate, Wright Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: Jan2011, Vol. 83 Issue 4, p1260; Subject Term: PENNING trap mass spectrometry; Subject Term: JET planes -- Fuel; Subject Term: FUZZY expert systems; Subject Term: GAS chromatography; Subject Term: QUADRUPOLES; Subject Term: AIRLINE industry; Subject Term: MASS spectrometry; Subject Term: ALIQUOT sequences; Author-Supplied Keyword: Chemometrics; Author-Supplied Keyword: Classification; Author-Supplied Keyword: Fast scanning; Author-Supplied Keyword: Fuzzy rule-building expert system; Author-Supplied Keyword: Gas chromatography; Author-Supplied Keyword: Jet fuel; Author-Supplied Keyword: Quadrupole ion trap mass spectrometry; NAICS/Industry Codes: 481111 Scheduled Passenger Air Transportation; NAICS/Industry Codes: 481110 Scheduled air transportation; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.talanta.2010.05.063 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57297308&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gopagoni, S. AU - Hwang, J.Y. AU - Singh, A.R.P. AU - Mensah, B.A. AU - Bunce, N. AU - Tiley, J. AU - Scharf, T.W. AU - Banerjee, R. T1 - Microstructural evolution in laser deposited nickel–titanium–carbon in situ metal matrix composites JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2011/01/28/ VL - 509 IS - 4 M3 - Article SP - 1255 EP - 1260 SN - 09258388 AB - Abstract: Laser deposition of a mixture of elemental nickel, titanium, and carbon (graphite) powders via the laser engineered net shaping (LENS) process results in an in situ titanium carbide reinforced nickel metal matrix composites. The composites have been characterized in detail using X-ray diffraction, scanning electron microscopy (including energy dispersive spectroscopy mapping), Auger electron spectroscopy, and transmission (including high resolution) electron microscopy. Both primary and eutectic titanium carbides, observed in this composite, exhibited the FCC-TiC structure (NaCl-type). Detailed characterization of the nickel/titanium carbide interface was carried out using high resolution TEM with the orientation relationship between the phases being 〈100〉 TiC//〈110〉 Ni and (002) TiC//() Ni. Mechanical and tribological testing determined that the composites exhibited a relatively high hardness of 370 VHN and a steady-state friction coefficient of ∼0.5, both improvements in comparison to LENS deposited pure Ni. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - PULSED laser deposition KW - NICKEL-titanium-carbon alloys KW - METALLIC composites KW - POWDER metallurgy KW - X-ray spectroscopy KW - PHASE transformations (Physics) KW - MIXTURES KW - METALS -- Mechanical properties KW - Laser deposition KW - Mechanical properties KW - Metal matrix composite KW - Microstructural evolution KW - Ni–Ti–C N1 - Accession Number: 55386503; Gopagoni, S. 1 Hwang, J.Y. 1; Email Address: Junyeon.Hwang@unt.edu Singh, A.R.P. 1 Mensah, B.A. 1 Bunce, N. 1 Tiley, J. 2 Scharf, T.W. 1 Banerjee, R. 1; Affiliation: 1: Center for Advanced Research and Technology and Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH 45433, United States; Source Info: Jan2011, Vol. 509 Issue 4, p1255; Subject Term: MICROSTRUCTURE; Subject Term: PULSED laser deposition; Subject Term: NICKEL-titanium-carbon alloys; Subject Term: METALLIC composites; Subject Term: POWDER metallurgy; Subject Term: X-ray spectroscopy; Subject Term: PHASE transformations (Physics); Subject Term: MIXTURES; Subject Term: METALS -- Mechanical properties; Author-Supplied Keyword: Laser deposition; Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Metal matrix composite; Author-Supplied Keyword: Microstructural evolution; Author-Supplied Keyword: Ni–Ti–C; NAICS/Industry Codes: 332117 Powder Metallurgy Part Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jallcom.2010.09.208 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55386503&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Viggiano, A. A. AU - Luzik, Eddie D. AU - Hazari, Nilay T1 - Kinetics of electron attachment to SF3CN, SF3C6F5, and SF3 and mutual neutralization of Ar+ with CN- and C6F5-. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2011/01/28/ VL - 134 IS - 4 M3 - Article SP - 044323 PB - American Institute of Physics SN - 00219606 AB - The additions of two sulfur fluoride derivatives (SF3C6F5 and SF3CN) to a flowing afterglow were studied by variable electron and neutral density mass spectrometry. Data collection and analysis were complicated by the high reactivity of the neutral species. Both species readily dissociatively attach thermal electrons at 300 K to yield SF3 + X- (X = C6F5, CN). Attachment to SF3C6F5 also results in SF3- + C6F5 as a minor product channel. The determined electron attachment rate constants were 1-0.6+1 × 10-7 cm3 s-1 for SF3C6F5, a lower limit of 1 × 10-8 cm3 s-1 for SF3CN, and 4 ± 3 × 10-9 cm3 s-1 for SF3. Mutual neutralization rate constants of C6F5- and CN- with Ar+ at 300 K were determined to be 5.5-1.6+1.0 × 10-8 and 3.0 ± 1 × 10-8 cm3 s-1, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUORIDES KW - THERMAL electrons KW - SULFUR compounds KW - AFTERGLOW (Physics) KW - MASS spectrometry KW - DISSOCIATION (Chemistry) KW - ARGON KW - CHEMICAL kinetics KW - NEUTRALIZATION (Chemistry) N1 - Accession Number: 57679456; Shuman, Nicholas S. 1 Miller, Thomas M. 1 Viggiano, A. A. 1 Luzik, Eddie D. 2,3 Hazari, Nilay 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts 01731-3010, 2: Sterling Chemistry Laboratory, Yale University, P. O. Box 208107, New Haven, Connecticut 06520, 3: Department of Chemistry, University of New Haven, New Haven, Connecticut 06516,; Source Info: 1/28/2011, Vol. 134 Issue 4, p044323; Subject Term: FLUORIDES; Subject Term: THERMAL electrons; Subject Term: SULFUR compounds; Subject Term: AFTERGLOW (Physics); Subject Term: MASS spectrometry; Subject Term: DISSOCIATION (Chemistry); Subject Term: ARGON; Subject Term: CHEMICAL kinetics; Subject Term: NEUTRALIZATION (Chemistry); NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1063/1.3529423 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57679456&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Joy E. Haley AU - Douglas M. Krein AU - Jennifer L. Monahan AU - Aaron R. Burke AU - Daniel G. McLean AU - Jonathan E. Slagle AU - Albert Fratini AU - Thomas M. Cooper T1 - Photophysical Properties of a Series of Electron-Donating and -Withdrawing Platinum Acetylide Two-Photon Chromophores. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2011/01/27/ VL - 115 IS - 3 M3 - Article SP - 265 EP - 273 SN - 10895639 AB - To explore spectroscopic structure−property relationships in platinum acetylides, we synthesized a series of complexes having the molecular formula trans-bis(tributylphosphine)-bis(4-((9,9-diethyl-7-ethynyl-9H-fluoren-2-yl)ethynyl)-R)-platinum. The substituent, R= NH2, OCH3, N(phenyl)2, t-butyl, CH3, H, F, benzothiazole, CF3, CN, and NO2, was chosen for a systematic variation in electron-donating and -withdrawing properties as described by the Hammett parameter σp. UV/vis, fluorescence, and phosphorescence spectra, transient absorption spectra on the fs−ps time scale, and longer time scale flash photolysis on the ns time scale were collected. DFT and TDDFT calculations of the T1and S1energies were performed. The ESand ETvalues measured from linear spectra correlate well with the calculated results, giving evidence for the delocalized MLCT character of the S1state and confinement of the T1exciton on one ligand. The calculated T1state dipole moment ranges from 0.5 to 14 D, showing the polar, charge-transfer character of the T1state. The ultrafast absorption spectra have broad absorption bands from 575 to 675 nm and long wavelength contribution, which is shown from flash photolysis measurements to be from the T1state. The T1energy obtained from phosphorescence, the T1−Tntransition energy obtained from flash photolysis measurements, and the triplet-state radiative rate constant are functions of the calculated spin density distribution on the ligand. The calculations show that the triplet exciton of chromophores with electron-withdrawing substitutents is localized away from the central platinum atom, red-shifting the spectra and increasing the triplet-state lifetime. Electron-donating substituents have the opposite effect on the location of the triplet exciton, the spectra, and the triplet-state lifetime. The relation between the intersystem crossing rate constant and the S1−T1energy gap shows a Marcus relationship with a reorganization energy of 0.83 eV. The calculations show that intersystem crossing occurs by conversion from a nonpolar, delocalized S1state to a polar, charge-transfer T1state confined to one ligand, accompanied by conformation changes and charge transfer, supporting the experimental evidence for Marcus behavior. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - PLATINUM compounds KW - INORGANIC compounds KW - PHOTONS KW - MOLECULES KW - ENERGY gaps (Physics) KW - WAVELENGTHS KW - PHOTOCHEMISTRY N1 - Accession Number: 57545526; Joy E. Haley 1 Douglas M. Krein 1 Jennifer L. Monahan 1 Aaron R. Burke 1 Daniel G. McLean 1 Jonathan E. Slagle 1 Albert Fratini 1 Thomas M. Cooper 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, United States, UES, Inc., Dayton, Ohio 45432, United States, General Dynamics Information Technology, Dayton, Ohio 45431, United States, SOCHE Student Research Program, Dayton, Ohio 45420, United States, Science Applications International Corporation, Dayton, Ohio 45431, United States, and Department of Chemistry, University of Dayton, Dayton, Ohio 45469, United States; Source Info: Jan2011, Vol. 115 Issue 3, p265; Subject Term: ELECTRONS; Subject Term: PLATINUM compounds; Subject Term: INORGANIC compounds; Subject Term: PHOTONS; Subject Term: MOLECULES; Subject Term: ENERGY gaps (Physics); Subject Term: WAVELENGTHS; Subject Term: PHOTOCHEMISTRY; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57545526&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varga, János AU - Domokos, Ágnes AU - Barna, István AU - Jankord, Ryan AU - Bagdy, György AU - Zelena, Dóra T1 - Lack of vasopressin does not prevent the behavioural and endocrine changes induced by chronic unpredictable stress JO - Brain Research Bulletin JF - Brain Research Bulletin Y1 - 2011/01/15/ VL - 84 IS - 1 M3 - Article SP - 45 EP - 52 SN - 03619230 AB - Abstract: Vasopressin (VP) plays an important role in hypothalamo–pituitary–adrenal (HPA) axis regulation and in stress-related disorders. Our previous studies confirmed the role of VP in acute situations, where VP-deficient Brattleboro rats had less depression-like behaviour compared to animals that express VP. In this study, we test the hypothesis that VP-deficient rats are more resistant to the development of chronic HPA axis hyperactivity and depression-like symptoms after chronic unpredictable stress (CUS). Male VP-deficient Brattleboro rats were compared to their heterozygous littermates (controls). CUS consisted of different mild stimuli for 5 weeks. Elevated plus maze and forced swim test were used for behavioural characterization, while organs and blood for HPA axis parameters were collected at the end of the experiment. In controls, CUS resulted in the development of chronic stress state characterized by typical somatic (body weight reduction, thymus involution) and endocrine changes (resting plasma ACTH and corticosterone elevation and POMC mRNA elevation in anterior lobe of the pituitary). Floating time in the forced swim test was enhanced together with reduced open arm entries on elevated plus maze and a reduction in daily food intake. Unexpectedly, the lack of VP did not alter the effect of CUS on the somatic and behavioural measures, but only prevented CUS-induced corticosterone changes. In conclusion, lifelong VP-deficiency has a positive effect on corticosterone elevation following CUS but does not affect the behavioural consequences of CUS. It is likely that the interplay of several related factors, rather than an alteration in a single neuropeptide, modulates behaviour and disease pathogenesis. [ABSTRACT FROM AUTHOR] AB - Copyright of Brain Research Bulletin is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VASOPRESSIN KW - ENDOCRINE diseases KW - BEHAVIOR disorders KW - STRESS (Psychology) KW - HYPOTHALAMIC-pituitary-adrenal axis KW - BRATTLEBORO rat KW - MENTAL depression KW - CORTICOSTERONE KW - ACTH KW - Corticosterone KW - Elevated plus maze KW - Forced swim KW - POMC N1 - Accession Number: 57076457; Varga, János 1 Domokos, Ágnes 1 Barna, István 1 Jankord, Ryan 2 Bagdy, György 3 Zelena, Dóra 1; Email Address: zelena.dora@koki.hu; Affiliation: 1: Institute of Experimental Medicine, Hungarian Academy of Sciences, 1083 Budapest, Szigony 43, Hungary 2: Vulnerability Analysis Branch, Human Effectiveness Directorate, Air Force Research Laboratory, 2800 Q Street Bldg 824, Wright Patterson AFB, OH 45433, USA 3: Department of Pharmacodynamics, Semmelweis University, 1085 Budapest, Üllői 26, Hungary; Source Info: Jan2011, Vol. 84 Issue 1, p45; Subject Term: VASOPRESSIN; Subject Term: ENDOCRINE diseases; Subject Term: BEHAVIOR disorders; Subject Term: STRESS (Psychology); Subject Term: HYPOTHALAMIC-pituitary-adrenal axis; Subject Term: BRATTLEBORO rat; Subject Term: MENTAL depression; Subject Term: CORTICOSTERONE; Author-Supplied Keyword: ACTH; Author-Supplied Keyword: Corticosterone; Author-Supplied Keyword: Elevated plus maze; Author-Supplied Keyword: Forced swim; Author-Supplied Keyword: POMC; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.brainresbull.2010.09.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57076457&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - O’Hara, P. AU - Duarte, C.A. AU - Eason, T. T1 - Transient analysis of sharp thermal gradients using coarse finite element meshes JO - Computer Methods in Applied Mechanics & Engineering JF - Computer Methods in Applied Mechanics & Engineering Y1 - 2011/01/15/ VL - 200 IS - 5-8 M3 - Article SP - 812 EP - 829 SN - 00457825 AB - Abstract: This paper investigates the application of the generalized finite element method with global–local enrichments (GFEM gl) to problems of transient heat transfer involving localized features. The GFEM gl is utilized in order to numerically construct general, specially-tailored shape functions yielding high levels of accuracy on coarse FEM meshes. The use of time-dependent shape functions requires that the system of equations be discretized temporally first, and then spatially in order to properly account for the time-dependency. The standard α-method is used for the time integration scheme. The transient three-dimensional GFEM gl is then applied to a laser heating example in order to demonstrate its ability to resolve localized, transient features on a fixed, coarse mesh. Convergence analysis of the proposed method as well as applications to heterogeneous materials, and moving heat sources are also provided. [ABSTRACT FROM AUTHOR] AB - Copyright of Computer Methods in Applied Mechanics & Engineering is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSIENTS (Dynamics) KW - FINITE element method KW - HEAT transfer KW - NUMERICAL integration KW - STOCHASTIC convergence KW - INHOMOGENEOUS materials KW - Generalized finite elements KW - Global local finite elements KW - hp methods KW - Multiscale problems KW - Rough solutions KW - Transient analysis N1 - Accession Number: 57162762; O’Hara, P. 1; Email Address: pohara@illinois.edu Duarte, C.A. 1; Email Address: caduarte@uiuc.edu Eason, T. 2; Email Address: Thomas.Eason@wpafb.af.mil; Affiliation: 1: Department of Civil and Environmental Engr., University of Illinois at Urbana-Champaign, Newmark Laboratory, 205 North Mathews Avenue, Urbana, IL 61801, USA 2: Air Force Research Laboratory, Air Vehicles Directorate, WPAFB, OH, USA; Source Info: Jan2011, Vol. 200 Issue 5-8, p812; Subject Term: TRANSIENTS (Dynamics); Subject Term: FINITE element method; Subject Term: HEAT transfer; Subject Term: NUMERICAL integration; Subject Term: STOCHASTIC convergence; Subject Term: INHOMOGENEOUS materials; Author-Supplied Keyword: Generalized finite elements; Author-Supplied Keyword: Global local finite elements; Author-Supplied Keyword: hp methods; Author-Supplied Keyword: Multiscale problems; Author-Supplied Keyword: Rough solutions; Author-Supplied Keyword: Transient analysis; Number of Pages: 18p; Document Type: Article L3 - 10.1016/j.cma.2010.10.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57162762&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lai, Shu T. AU - Cooke, David AU - Payan, Denis AU - Hilgers, Alain AU - Cho, Mengu AU - Garrett, Henry AU - Ferguson, Dale AU - Roussel, Jean-Francois AU - Wheelock, Adrian T1 - Announcing the IEEE Transactions on Plasma Science Special Issue on Spacecraft Charging Technology January 2012. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2011/01/15/ VL - 39 IS - 1 M3 - Article SP - 628 EP - 628 SN - 00933813 KW - SPECIAL issues of periodicals KW - SPACE vehicles -- Electrostatic charging KW - PUBLICATIONS KW - RESEARCH KW - ELECTRONS KW - ELECTRONICS KW - PLASMA (Ionized gases) N1 - Accession Number: 57255090; Lai, Shu T. 1 Cooke, David 1 Payan, Denis 2 Hilgers, Alain 3 Cho, Mengu 4 Garrett, Henry 5 Ferguson, Dale 1 Roussel, Jean-Francois 6 Wheelock, Adrian 1; Affiliation: 1: Air Force Research Laboratory, USA 2: CNES, France 3: ESA, The Netherlands 4: Kyushu Institute of Technology, Fukuoka, Japan 5: JPL, USA 6: ONERA, France; Source Info: 01/15/2011, Vol. 39 Issue 1, p628; Subject Term: SPECIAL issues of periodicals; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: PUBLICATIONS; Subject Term: RESEARCH; Subject Term: ELECTRONS; Subject Term: ELECTRONICS; Subject Term: PLASMA (Ionized gases); NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 1p; Document Type: Article L3 - 10.1109/TPS.2010.2097490 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57255090&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stewart, Joel B. AU - Cazacu, Oana T1 - Analytical yield criterion for an anisotropic material containing spherical voids and exhibiting tension–compression asymmetry JO - International Journal of Solids & Structures JF - International Journal of Solids & Structures Y1 - 2011/01/15/ VL - 48 IS - 2 M3 - Article SP - 357 EP - 373 SN - 00207683 AB - Abstract: A significant difference between the behavior in tension versus compression is obtained at the polycrystal level if either twinning or non-Schmid effects are contributors to the plastic deformation at the single crystal level. Examples of materials that exhibit tension–compression asymmetry include hexagonal close-packed (HCP) polycrystals and intermetallics (e.g., molybdenum compounds). Despite recent progress in modeling their yield behavior in the absence of voids, the description of coupling between plasticity and damage by void growth in these materials remains a challenge. This paper is devoted to the development of a macroscopic anisotropic yield criterion for a porous material when the matrix material is incompressible, anisotropic and displays tension–compression asymmetry. The analytical yield criterion is obtained based on micromechanical considerations and non-linear homogenization. The matrix plastic behavior is described by the anisotropic yield criterion that is pressure-insensitive and accounts for strength–differential effects. Comparison between finite element cell calculations and theory show the predictive capabilities of the developed anisotropic model in terms of modeling the combined effects of anisotropy, tension–compression asymmetry of the matrix and voids on the overall yielding of the porous aggregate. It is shown that if the matrix material does not display tension–compression asymmetry, the developed criterion reduces to that of . If the matrix is isotropic, it reduces to the isotropic criterion developed in . [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Solids & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANISOTROPY KW - POLYCRYSTALS KW - HOMOGENIZATION (Differential equations) KW - POROUS materials KW - ANALYTICAL mechanics KW - COMPRESSIBILITY KW - Constitutive behavior KW - Finite element KW - Hexagonal close-packed (HCP) materials KW - Homogenization KW - Plastic anisotropy KW - Porous material KW - Tension–compression asymmetry N1 - Accession Number: 55058778; Stewart, Joel B. 1; Email Address: joel.stewart@eglin.af.mil Cazacu, Oana 2; Email Address: cazacu@reef.ufl.edu; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, United States 2: Department of Mechanical and Aerospace Engineering, University of Florida REEF, 1350 N Poquito Road, Shalimar, FL 32539, United States; Source Info: Jan2011, Vol. 48 Issue 2, p357; Subject Term: ANISOTROPY; Subject Term: POLYCRYSTALS; Subject Term: HOMOGENIZATION (Differential equations); Subject Term: POROUS materials; Subject Term: ANALYTICAL mechanics; Subject Term: COMPRESSIBILITY; Author-Supplied Keyword: Constitutive behavior; Author-Supplied Keyword: Finite element; Author-Supplied Keyword: Hexagonal close-packed (HCP) materials; Author-Supplied Keyword: Homogenization; Author-Supplied Keyword: Plastic anisotropy; Author-Supplied Keyword: Porous material; Author-Supplied Keyword: Tension–compression asymmetry; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.ijsolstr.2010.10.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55058778&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bobela, David C. AU - Taylor, P. Craig AU - Kuhns, Phillip AU - Reyes, Ameil AU - Edwards, Arthur T1 - Antimony bonding in Ge-Sb-Te phase change materials. JO - Physical Review B: Condensed Matter & Materials Physics JF - Physical Review B: Condensed Matter & Materials Physics Y1 - 2011/01/15/ VL - 83 IS - 3 M3 - Article SP - 33201:1 EP - 33201:4 SN - 10980121 AB - The amorphous phase in some technologically important Ge-Sb-Te systems is still not well understood despite many models that exist to explain it. Using nuclear magnetic resonance, we demonstrate that Sb bonding in these systems follows the 8-N rule for chemical bonding in amorphous solids. We find that the Sb atoms preferentially bond to three atoms in a pyramidal configuration analogous to the sites occurring in Sb-S or Sb-Se systems. The data we present should be used as a guide for structural modeling of the amorphous phase. [ABSTRACT FROM AUTHOR] AB - Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTIMONY KW - AMORPHOUS substances KW - NUCLEAR magnetic resonance KW - ATOMS KW - STRUCTURAL frames -- Models N1 - Accession Number: 66718451; Bobela, David C. 1,2 Taylor, P. Craig 3 Kuhns, Phillip 4 Reyes, Ameil 4 Edwards, Arthur 5; Affiliation: 1: Department of Physics, University of Utah, Salt Lake City, Utah 84112, USA 2: Renewable Energy Laboratory, Golden, CO 80401 3: Department of Physics, Colorado School of Mines, Golden, Colorado 80401, USA 4: National High Magnetic Field Laboratory, Tallahassee, Florida 32310-3706, USA 5: Air Force Research Laboratory, RVSE, Kirtland Air Force Base, New Mexico 87117-5776, USA; Source Info: Jan2011, Vol. 83 Issue 3, p33201:1; Subject Term: ANTIMONY; Subject Term: AMORPHOUS substances; Subject Term: NUCLEAR magnetic resonance; Subject Term: ATOMS; Subject Term: STRUCTURAL frames -- Models; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 4p; Document Type: Article L3 - 10.1103/PhysRevB.83.033201 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66718451&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Muratore, C. AU - Bultman, J.E. AU - Aouadi, S.M. AU - Voevodin, A.A. T1 - In situ Raman spectroscopy for examination of high temperature tribological processes JO - Wear JF - Wear Y1 - 2011/01/12/ VL - 270 IS - 3/4 M3 - Article SP - 140 EP - 145 SN - 00431648 AB - Abstract: Raman spectroscopy of solid lubricant coatings during high temperature (300–700°C) wear testing was employed for real-time correlation of sliding contact surface chemistry to the measured friction coefficient. Two coatings were investigated in this work – MoS2 and VN-Ag. Immediately prior to failure of the MoS2 coating at 350°C, molybdenum trioxide was detected in the wear track, and an increase in friction coefficient and ultimate failure of the coating was associated with buildup of the abrasive oxide compound. For the VN-Ag nanocomposite coating, in situ Raman analysis of the contact surface during heating revealed the appearance of silver vanadate compounds at a temperature of 375°C. At higher temperatures, competitive evolution of different silver vanadate phases (i.e., Ag3VO4, AgVO3) was observed. For the conditions examined in this work, the wear process at 700°C inhibited formation of AgVO3 in the sliding contact, as determined by comparison of the composition of the wear track to that of the adjacent, unworn coating surface. Additionally, the composition of the wear track was significantly different after the sample had cooled sufficiently to allow handling for post-test surface characterization with conventional Raman, XRD, and SEM techniques, further illustrating the utility of in situ diagnostics for identification of active lubricant phases during wear tests. This ability to characterize surfaces during wear tests at elevated temperatures fills an important gap left by current in situ tribology techniques that are currently used to provide insight on mechanisms governing the performance of solid lubricant film materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Wear is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN spectroscopy KW - HIGH temperatures KW - TRIBOLOGY KW - SOLID lubricants KW - NANOCOMPOSITE materials KW - X-ray diffraction KW - STRUCTURAL equation modeling KW - SURFACES (Technology) -- Analysis KW - High temperature KW - Sliding wear KW - Solid lubricant coatings KW - Surface analysis KW - Tribochemistry N1 - Accession Number: 57162714; Muratore, C. 1; Email Address: chris.muratore@wpafb.af.mil Bultman, J.E. 1,2 Aouadi, S.M. 3 Voevodin, A.A. 1; Affiliation: 1: Air Force Research Laboratory, Thermal Sciences and Materials Branch, Wright Patterson Air Force Base, OH 45433, USA 2: University of Dayton Research Institute/Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 3: Southern Illinois University, Department of Physics, Carbondale, IL 62901, USA; Source Info: Jan2011, Vol. 270 Issue 3/4, p140; Subject Term: RAMAN spectroscopy; Subject Term: HIGH temperatures; Subject Term: TRIBOLOGY; Subject Term: SOLID lubricants; Subject Term: NANOCOMPOSITE materials; Subject Term: X-ray diffraction; Subject Term: STRUCTURAL equation modeling; Subject Term: SURFACES (Technology) -- Analysis; Author-Supplied Keyword: High temperature; Author-Supplied Keyword: Sliding wear; Author-Supplied Keyword: Solid lubricant coatings; Author-Supplied Keyword: Surface analysis; Author-Supplied Keyword: Tribochemistry; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.wear.2010.07.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57162714&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Walker, E. S. AU - Hook, I. M. AU - Sullivan, M. AU - Howell, D. A. AU - Astier, P. AU - Balland, C. AU - Basa, S. AU - Bronder, T. J. AU - Carlberg, R. AU - Conley, A. AU - Fouchez, D. AU - Guy, J. AU - Hardin, D. AU - Pain, R. AU - Perrett, K. AU - Pritchet, C. AU - Regnault, N. AU - Rich, J. AU - Aldering, G. AU - Fakhouri, H. K. T1 - Supernova Legacy Survey: using spectral signatures to improve Type Ia supernovae as distance indicators. JO - Monthly Notices of the Royal Astronomical Society JF - Monthly Notices of the Royal Astronomical Society Y1 - 2011/01/11/ VL - 410 IS - 2 M3 - Article SP - 1262 EP - 1282 PB - Oxford University Press / USA SN - 00358711 AB - ABSTRACT Optical long-slit spectroscopy at the Gemini-North telescope using the Gemini Multi-Object Spectrograph (GMOS) was used to classify targets from the Supernova Legacy Survey (SNLS) from 2005 July and 2006 May-2008 May. During this time, 95 objects were observed. Where possible, the objects' redshifts ( z) were measured from narrow emission or absorption features in the host galaxy spectrum, otherwise they were measured from the broader supernova features. We present spectra of 68 confirmed or probable SNe Ia from SNLS with redshifts in the range 0.17 ≤ z≤ 1.02. In combination with earlier SNLS Gemini and VLT spectra, we used these new observations to measure pseudo-equivalent widths (EWs) of three spectral features - Ca ii H&K, Si ii and Mg ii- in 144 objects and compared them to the EWs of low-redshift SNe Ia from a sample drawn from the literature. No signs of changes with z are seen for the Ca ii H&K and Mg ii features. Systematically lower EW Si ii is seen at high redshift, but this can be explained by a change in demographics of the SNe Ia population within a two-component model combined with an observed correlation between EW Si ii and photometric light-curve stretch. [ABSTRACT FROM AUTHOR] AB - Copyright of Monthly Notices of the Royal Astronomical Society is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TYPE I supernovae KW - OPTICAL spectroscopy KW - RED shift KW - COSMOLOGY KW - ASTRONOMICAL photometry KW - CORRELATION (Statistics) KW - GALAXIES -- Spectra N1 - Accession Number: 65025245; Walker, E. S. 1,2,3 Hook, I. M. 1,4 Sullivan, M. 1 Howell, D. A. 5,6 Astier, P. 7 Balland, C. 8,9 Basa, S. 9 Bronder, T. J. 10 Carlberg, R. 11 Conley, A. 12 Fouchez, D. 13 Guy, J. 7 Hardin, D. 7 Pain, R. 7 Perrett, K. 11,14 Pritchet, C. 15 Regnault, N. 7 Rich, J. 16 Aldering, G. 17 Fakhouri, H. K. 17; Affiliation: 1: University of Oxford, Astrophysics, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH 2: INAF-Osservatorio Astronomico di Trieste, via Tiepolo 11, 34143 Trieste, Italy 3: Scuola Normale Superiore di Pisa, Piazza dei Cavalieri 7, 56126 Pisa, Italy 4: INAF-Osservatorio Astronomico di Roma, via di Frascati 33, 00040 Monteporzio Catone, Italy 5: Las Cumbres Observatory Global Telescope Network, 6740 Cortona Dr., Suite 102, Goleta, CA 93117, USA 6: Department of Physics, University of California, Santa Barbara, Broida Hall, Mail Code 9530, Santa Barbara, CA 93106-9530, USA 7: LPNHE, Université Pierre et Marie Curie Paris 6, Université Paris Diderot Paris 7, CNRS-IN2P3, 4 place Jussieu, 75252 Paris Cedex 05, France 8: University of Paris 11, 91405 Orsay, France 9: LAM, CNRS, BP8, Pôle de létoile, Site de Château-Gombert, 38 rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France 10: Advanced Electric Lasers Branch, Air Force Research Laboratory, 3550 Aberdeen SE, Kirtland Air Force Base, New Mexico 87117, USA 11: Department of Astronomy and Astrophysics, University of Toronto, 50 St George Street, Toronto, ON M5S 3H4, Canada 12: Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, CO 80309-0391, USA 13: CPPM, CNRS-Luminy, Case 907, 13288 Marseille Cedex 9, France 14: Netowrk Information Operations, DRDC Ottawa, 3701 Carling Avenue, Ottawa, ON K1A 0Z4, Canada 15: Department of Physics and Astronomy, University of Victoria, PO Box 3055, Victoria, BC V8W 3P6, Canada 16: CEA/Saclay, DSM/Irfu/Spp, 91191 Gif-sur-Yvette Cedex, France 17: Lawrence Berkely National Laboratory, Mail Stop 50-232, Lawrence Berkley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA; Source Info: Jan2011, Vol. 410 Issue 2, p1262; Subject Term: TYPE I supernovae; Subject Term: OPTICAL spectroscopy; Subject Term: RED shift; Subject Term: COSMOLOGY; Subject Term: ASTRONOMICAL photometry; Subject Term: CORRELATION (Statistics); Subject Term: GALAXIES -- Spectra; Number of Pages: 21p; Document Type: Article L3 - 10.1111/j.1365-2966.2010.17519.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=65025245&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sejvar, James J. AU - Kohl, Katrin S. AU - Gidudu, Jane AU - Amato, Anthony AU - Bakshi, Nandini AU - Baxter, Roger AU - Burwen, Dale R. AU - Cornblath, David R. AU - Cleerbout, Jan AU - Edwards, Kathryn M. AU - Heininger, Ulrich AU - Hughes, Richard AU - Khuri-Bulos, Najwa AU - Korinthenberg, Rudolf AU - Law, Barbara J. AU - Munro, Ursula AU - Maltezou, Helena C. AU - Nell, Patricia AU - Oleske, James AU - Sparks, Robert T1 - Guillain–Barré syndrome and Fisher syndrome: Case definitions and guidelines for collection, analysis, and presentation of immunization safety data JO - Vaccine JF - Vaccine Y1 - 2011/01/10/ VL - 29 IS - 3 M3 - Article SP - 599 EP - 612 SN - 0264410X KW - Acute inflammatory demyelinating polyradiculoneuropathy KW - Adverse event KW - Case definition KW - Fisher syndrome KW - Guidelines KW - Guillain–Barré syndrome KW - Immunization KW - Neuropathy N1 - Accession Number: 57078773; Sejvar, James J. 1; Email Address: secretariat@brightoncollaboration.org Kohl, Katrin S. 1 Gidudu, Jane 1 Amato, Anthony 2 Bakshi, Nandini 3 Baxter, Roger 3 Burwen, Dale R. 4 Cornblath, David R. 5 Cleerbout, Jan 6 Edwards, Kathryn M. 7 Heininger, Ulrich 8 Hughes, Richard 9 Khuri-Bulos, Najwa 10 Korinthenberg, Rudolf 11 Law, Barbara J. 12 Munro, Ursula 13 Maltezou, Helena C. 14 Nell, Patricia 15 Oleske, James 16 Sparks, Robert 17; Affiliation: 1: Centers for Disease Control and Prevention, Atlanta, GA, USA 2: Department of Neurology, Division of Neuromuscular Disease, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA, USA 3: NCK Kaiser Permanente, Oakland, CA, USA 4: Food and Drug Administration, Rockville, MD, USA 5: John Hopkins University School of Medicine, Baltimore, MD, USA 6: GlaxoSmithKline Biologicals, Rixensart, Belgium 7: Vanderbilt University School of Medicine, Nashville, TN, USA 8: University Children's Hospital, Basel, Switzerland 9: King's College London School of Medicine, London, UK 10: Jordan University Hospital, Amman, Jordan 11: University Hospital Freiburg, Freiburg, Germany 12: Public Health Agency of Canada, Ottawa, Ontario, Canada 13: Sanofi Pasteur MSD GmbH, Walldorf, Germany 14: Hellenic Center for Disease Control and Prevention, Athens, Greece 15: Airforce Reserve Command, United States Air Force, Sturgeon Bay, WI, USA 16: University Hospital, New Jersey Medical School, Morris Plains, NJ, USA 17: Vanderbilt University Medical Center, Nashville, TN, USA; Source Info: Jan2011, Vol. 29 Issue 3, p599; Author-Supplied Keyword: Acute inflammatory demyelinating polyradiculoneuropathy; Author-Supplied Keyword: Adverse event; Author-Supplied Keyword: Case definition; Author-Supplied Keyword: Fisher syndrome; Author-Supplied Keyword: Guidelines; Author-Supplied Keyword: Guillain–Barré syndrome; Author-Supplied Keyword: Immunization; Author-Supplied Keyword: Neuropathy; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.vaccine.2010.06.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57078773&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mishin, E. V. T1 - Nonlinear Plasma Effects in Natural and Artificial Aurora. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2011/01/04/ VL - 1320 IS - 1 M3 - Article SP - 177 EP - 184 PB - American Institute of Physics SN - 0094243X AB - This report describes common features of natural ('Enhanced') aurora and 'artificial aurora' (AA) created by electron beams injected from sounding rockets. These features cannot be explained solely by col-lisional degradation of energetic electrons, thereby pointing to collisionless plasma effects. The fundamental role in electron beam-ionosphere interactions belongs to Langmuir turbulence. Its development in the (weakly-ionized) ionosphere is significantly affected by electron-neutral collisions, so that the heating and acceleration of plasma electrons proceed more efficiently than in collisionless plasmas. As a result, a narrow layer of enhanced auroral glow/ionization is formed above the standard collisional peak. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLISIONLESS plasmas KW - ELECTRON beams KW - IONOSPHERE KW - ATMOSPHERIC ionization KW - SOUNDING rockets KW - TURBULENCE N1 - Accession Number: 57288815; Mishin, E. V. 1; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Bedford, MA 01731, USA; Source Info: 1/4/2011, Vol. 1320 Issue 1, p177; Subject Term: COLLISIONLESS plasmas; Subject Term: ELECTRON beams; Subject Term: IONOSPHERE; Subject Term: ATMOSPHERIC ionization; Subject Term: SOUNDING rockets; Subject Term: TURBULENCE; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.3544322 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57288815&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucas, Pauline M. AU - Morgan, Oliver W. AU - Gibbons, Thomas F. AU - Guerrero, Alicia C. AU - Maupin, Genny M. AU - Butler, Jenny L. AU - Canas, Linda C. AU - Fonseca, Vincent P. AU - Olsen, Sonja J. AU - MacIntosh, Victor H. T1 - Diagnosis of 2009 Pandemic Influenza A (pH1N1) and Seasonal Influenza Using Rapid Influenza Antigen Tests, San Antonio, Texas, April–June 2009. JO - Clinical Infectious Diseases JF - Clinical Infectious Diseases Y1 - 2011/01/02/ VL - 52 IS - suppl_1 M3 - Article SP - S116 EP - S122 SN - 10584838 AB - Clinicians frequently use influenza rapid antigen tests for diagnostic testing. We tested nasal wash samples from 1 April to 7 June 2009 from 1538 patients using the QuickVue Influenza A+B (Quidel) rapid influenza antigen test and compared the results with real-time reverse transcription polymerase chain reaction (rRT-PCR) assay (gold standard). The prevalence of 2009 pandemic influenza A (pH1N1) was 1.98%, seasonal influenza type A .87%, and seasonal influenza type B 2.07%. The sensitivity and specificity of the rapid test for pH1N1 was 20% (95% CI, 8–39) and 99% (95% CI, 98–99), for seasonal influenza type A 15% (95% CI, 2–45) and 99% (95% CI, 98–99), and for influenza type B was 31% (95% CI, 9–61) and 99% (95% CI, 98–99.7). Rapid influenza antigen tests were of limited use at a time when the prevalence of pH1N1 and seasonal influenza in the United States was low. Clinicians should instead rely on clinical impression and laboratory diagnosis by rRT-PCR. [ABSTRACT FROM AUTHOR] AB - Copyright of Clinical Infectious Diseases is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFLUENZA -- Diagnosis KW - H1N1 (2009) influenza KW - SEASONAL influenza KW - ANTIGENS KW - POLYMERASE chain reaction KW - SAN Antonio (Tex.) KW - TEXAS N1 - Accession Number: 83182099; Lucas, Pauline M. 1 Morgan, Oliver W. 2 Gibbons, Thomas F. 1 Guerrero, Alicia C. 1,3 Maupin, Genny M. 1,4 Butler, Jenny L. 1,3 Canas, Linda C. 1 Fonseca, Vincent P. 5 Olsen, Sonja J. 2 MacIntosh, Victor H. 1; Affiliation: 1: Department of Defense Global Laboratory-based Influenza Surveillance Program, United States Air Force School of Aerospace Medicine, Brooks City-Base, San Antonio, Texas 2: Division of Preparedness and Emerging Infections, Centers for Disease Control and Prevention, Atlanta, Georgia 3: Conceptual Mind Works, San Antonio, Texas 4: Oak Ridge Institute for Science and Education, Oak Ridge, Tennessee 5: Texas Department of State Health Services, Austin, Texas; Source Info: 2011, Vol. 52 Issue suppl_1, pS116; Subject Term: INFLUENZA -- Diagnosis; Subject Term: H1N1 (2009) influenza; Subject Term: SEASONAL influenza; Subject Term: ANTIGENS; Subject Term: POLYMERASE chain reaction; Subject Term: SAN Antonio (Tex.); Subject Term: TEXAS; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; NAICS/Industry Codes: 325414 Biological Product (except Diagnostic) Manufacturing; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=83182099&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Comeaux, James A. AU - Jauchem, James R. AU - Cox, D. Duane AU - Crane, Carrie C. AU - D'Andrea, John A. T1 - Muscle Contraction During Electro-muscular Incapacitation: A Comparison Between Square-wave Pulses and the TASER. JO - Journal of Forensic Sciences (Wiley-Blackwell) JF - Journal of Forensic Sciences (Wiley-Blackwell) Y1 - 2011/01/02/Jan2011 Supplement VL - 56 M3 - Article SP - S95 EP - S100 SN - 00221198 AB - Electronic control devices (including the Advanced TASER X26 model produced by TASER International) incapacitate individuals by causing muscle contractions. To provide information relevant to development of future potential devices, effects of monophasic square waves with different parameters were compared with those of the X26 electronic control device, using two animal models (frogs and swine). Pulse power, electrical pulse charge, pulse duration, and pulse repetition frequency affected muscle contraction. There was no difference in the charge required, between the square waveform and the X26 waveform, to cause approximately the same muscle-contraction response (in terms of the strength-duration curve). Thus, on the basis of these initial studies, the detailed shape of a waveform may not be important in terms of generating electro-muscular incapacitation. More detailed studies, however, may be required to thoroughly test all potential waveforms to be considered for future use in ECDs. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Forensic Sciences (Wiley-Blackwell) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC control KW - MUSCLE contraction KW - SWINE as laboratory animals KW - ELECTRONIC apparatus & appliances KW - FROGS KW - electromuscular incapacitation KW - electronic control devices KW - forensic science KW - muscle contraction KW - Rana pipiens KW - Sus scrofa KW - TASER N1 - Accession Number: 56943221; Comeaux, James A. 1; Email Address: james.jauchem@brooks.af.mil Jauchem, James R. 2 Cox, D. Duane 3 Crane, Carrie C. 3 D'Andrea, John A. 3; Affiliation: 1: Advanced Information Engineering Services, A General Dynamics Company, 3276 Reliance Loop, San Antonio, TX 78235. 2: Directed Energy Bio-Effects Division, US Air Force Research Laboratory, 8262 Hawks Road, San Antonio, TX 78235-5147. 3: Directed Energy Bioeffects Laboratory Detachment, Research Operations Division, US Naval Health Research Center, San Antonio, TX 78235.; Source Info: Jan2011 Supplement, Vol. 56, pS95; Subject Term: ELECTRONIC control; Subject Term: MUSCLE contraction; Subject Term: SWINE as laboratory animals; Subject Term: ELECTRONIC apparatus & appliances; Subject Term: FROGS; Author-Supplied Keyword: electromuscular incapacitation; Author-Supplied Keyword: electronic control devices; Author-Supplied Keyword: forensic science; Author-Supplied Keyword: muscle contraction; Author-Supplied Keyword: Rana pipiens; Author-Supplied Keyword: Sus scrofa; Author-Supplied Keyword: TASER; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; NAICS/Industry Codes: 114114 Freshwater fishing; NAICS/Industry Codes: 112519 Other Aquaculture; NAICS/Industry Codes: 112510 Aquaculture; NAICS/Industry Codes: 114113 Salt water fishing; NAICS/Industry Codes: 411110 Live animal merchant wholesalers; Number of Pages: 6p; Document Type: Article L3 - 10.1111/j.1556-4029.2010.01580.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=56943221&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jauchem, James R. T1 - Increased Hematocrit After Applications of Conducted Energy Weapons (Including TASER. JO - Journal of Forensic Sciences (Wiley-Blackwell) JF - Journal of Forensic Sciences (Wiley-Blackwell) Y1 - 2011/01/02/Jan2011 Supplement VL - 56 M3 - Article SP - S229 EP - S233 SN - 00221198 AB - Conducted energy weapons (CEWs) are used by law enforcement personnel to incapacitate individuals quickly and effectively, without intending to cause lethality. CEWs have been deployed for relatively long or repeated exposures in some cases. In laboratory animal models, central venous hematocrit has increased significantly after CEW exposure. Even limited applications (e.g., three 5-sec applications) resulted in statistically significant increases in hematocrit. Preexposure hematocrit was significantly higher in nonsurvivors versus survivors after more extreme CEW applications. The purpose of this technical note is to address specific questions that may be generated when examining these results. Comparisons among results of CEW applications, other electrical muscle stimulation, and exercise/voluntary muscle contraction are included. The anesthetized swine appears to be an acceptable animal model for studying changes in hematocrit and associated red blood cell changes. Potential detrimental effects of increased hematocrit, and considerations during law enforcement use, are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Forensic Sciences (Wiley-Blackwell) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAW enforcement KW - HEMATOCRIT KW - ERYTHROCYTES KW - FORENSIC sciences KW - MUSCLES KW - animal model KW - conducted energy weapon KW - electro-muscular disruption KW - electronic control device KW - forensic pathophysiology KW - forensic science KW - hematocrit KW - swine KW - TASER N1 - Accession Number: 56943215; Jauchem, James R. 1; Email Address: james.jauchem@brooks.af.mil; Affiliation: 1: Directed Energy Bio-Effects Division, Human Effectiveness Directorate, 711th Human Performance Wing, U.S. Air Force Research Laboratory, 8262 Hawks Road, San Antonio, TX 78235.; Source Info: Jan2011 Supplement, Vol. 56, pS229; Subject Term: LAW enforcement; Subject Term: HEMATOCRIT; Subject Term: ERYTHROCYTES; Subject Term: FORENSIC sciences; Subject Term: MUSCLES; Author-Supplied Keyword: animal model; Author-Supplied Keyword: conducted energy weapon; Author-Supplied Keyword: electro-muscular disruption; Author-Supplied Keyword: electronic control device; Author-Supplied Keyword: forensic pathophysiology; Author-Supplied Keyword: forensic science; Author-Supplied Keyword: hematocrit; Author-Supplied Keyword: swine; Author-Supplied Keyword: TASER; NAICS/Industry Codes: 922120 Police Protection; NAICS/Industry Codes: 922190 Other Justice, Public Order, and Safety Activities; Number of Pages: 5p; Document Type: Article L3 - 10.1111/j.1556-4029.2010.01629.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=56943215&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Courtney, Michael W. AU - Courtney, Amy C. T1 - Working toward exposure thresholds for blast-induced traumatic brain injury: Thoracic and acceleration mechanisms JO - NeuroImage JF - NeuroImage Y1 - 2011/01/02/Jan2011 Supplement 1 VL - 54 M3 - Article SP - S55 EP - S61 SN - 10538119 AB - Abstract: Research in blast-induced lung injury resulted in exposure thresholds that are useful in understanding and protecting humans from such injury. Because traumatic brain injury (TBI) due to blast exposure has become a prominent medical and military problem, similar thresholds should be identified that can put available research results in context and guide future research toward protecting war fighters as well as diagnosis and treatment. At least three mechanical mechanisms by which the blast wave may result in brain injury have been proposed—a thoracic mechanism, head acceleration, and direct cranial transmission. These mechanisms need not be mutually exclusive. In this study, likely regions of interest for the first two mechanisms based on blast characteristics (positive pulse duration and peak effective overpressure) are developed using available data from blast experiments and related studies, including behind-armor blunt trauma and ballistic pressure wave studies. These related studies are appropriate to include because blast-like pressure waves are produced that result in neurological effects like those caused by blast. Results suggest that injury thresholds for each mechanism are dependent on blast conditions, and that under some conditions, more than one mechanism may contribute. There is a subset of blast conditions likely to result in TBI due to head acceleration and/or a thoracic mechanism without concomitant lung injury. These results can be used to guide experimental designs and compare additional data as they become available. Additional data are needed before actual probabilities or severity of TBI for a given exposure can be described. [ABSTRACT FROM AUTHOR] AB - Copyright of NeuroImage is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BLAST injuries KW - BLUNT trauma KW - BRAIN -- Wounds & injuries KW - PRESSURE KW - BRAIN diseases -- Treatment KW - ACCELERATION (Mechanics) KW - LUNGS -- Wounds & injuries KW - THORACIC surgery KW - Ballistic pressure wave KW - Behind armor blunt trauma KW - Blast injury KW - Blast wave KW - TBI KW - Traumatic brain injury N1 - Accession Number: 57250291; Courtney, Michael W. 1; Email Address: Michael.Courtney@usafa.edua Courtney, Amy C. 2; Email Address: amy_courtney@post.harvard.edu; Affiliation: 1: US Air Force Academy, 2354 Fairchild Drive, USAF Academy, CO 80840, USA 2: Force Protection Industries, Inc., 9801 Highway 78, Ladson, SC 29456, USA; Source Info: Jan2011 Supplement 1, Vol. 54, pS55; Subject Term: BLAST injuries; Subject Term: BLUNT trauma; Subject Term: BRAIN -- Wounds & injuries; Subject Term: PRESSURE; Subject Term: BRAIN diseases -- Treatment; Subject Term: ACCELERATION (Mechanics); Subject Term: LUNGS -- Wounds & injuries; Subject Term: THORACIC surgery; Author-Supplied Keyword: Ballistic pressure wave; Author-Supplied Keyword: Behind armor blunt trauma; Author-Supplied Keyword: Blast injury; Author-Supplied Keyword: Blast wave; Author-Supplied Keyword: TBI; Author-Supplied Keyword: Traumatic brain injury; Number of Pages: 0p; Document Type: Article L3 - 10.1016/j.neuroimage.2010.05.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57250291&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Andino, Marlyn Y. AU - Wallace, Ryan D. AU - Glauser, Mark N. AU - Camphouse, R. Chris AU - Schmit, Ryan F. AU - Myatt, James H. T1 - Boundary Feedback Flow Control: Proportional Control with Potential Application to Aero-Optics. JO - AIAA Journal JF - AIAA Journal Y1 - 2011/01// VL - 49 IS - 1 M3 - Article SP - 32 EP - 40 SN - 00011452 AB - A large percentage of the losses in performance and effectiveness of airborne optical systems are caused by turbulence. In an effort to reduce these adverse effects in airborne optical systems, we are exploring the use of both open- and closed-loop flow control over a cylindrical turret. A series of experiments were performed at a Reynolds number of 2 x 106 based on the turret's diameter and freestream velocity, which corresponds to a Mach number of 0.3. The three-dimensional turret contained an actuation system that consists of 17 synthetic jets placed upstream from the leading edge of the aperture. Initially, a large database containing no control and open-loop control was obtained. These data sets provide a rich ensemble for the development and application of a simple proportional closed-loop control with the use of proper orthogonal decomposition. Surface pressure measurements were acquired across the aperture region for all cases studied. Results from the open-loop test demonstrate a reduction of 19.6% in the root-mean-square values when compared to the baseline case. The closed-loop flow control results show that the root-mean-square pressure fluctuations are reduced by 25.7 %, the integral scales are significantly reduced, and the flow is driven toward homogeneity. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TURBULENCE KW - AERODYNAMICS KW - REYNOLDS number KW - ORTHOGONAL decompositions KW - PRESSURE KW - MACH number N1 - Accession Number: 57456114; Andino, Marlyn Y. 1 Wallace, Ryan D. 1 Glauser, Mark N. 1 Camphouse, R. Chris 2 Schmit, Ryan F. 3 Myatt, James H. 3; Affiliation: 1: Syracuse University, Syracuse, New York 13211 2: Sandia National Laboratories, Carlsbad, New Mexico 88220 3: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jan2011, Vol. 49 Issue 1, p32; Subject Term: TURBULENCE; Subject Term: AERODYNAMICS; Subject Term: REYNOLDS number; Subject Term: ORTHOGONAL decompositions; Subject Term: PRESSURE; Subject Term: MACH number; Number of Pages: 9p; Illustrations: 4 Diagrams, 3 Charts, 7 Graphs; Document Type: Article L3 - 10.2514/1.44742 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57456114&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chimakurthi, Satish K. AU - Cesnik, Carlos E. S. AU - Stanford, Bret K. T1 - Flapping-Wing Structural Dynamics Formulation Based on a Corotational Shell Finite Element. JO - AIAA Journal JF - AIAA Journal Y1 - 2011/01// VL - 49 IS - 1 M3 - Article SP - 128 EP - 142 SN - 00011452 AB - Flexible flapping wings have garnered a large amount of attention within the micro aerial vehicle community: a critical component of computational micro aerial vehicle simulations is the representation of the structural dynamics behavior of the flapping-wing structure. This paper discusses the development of a new nonlinear finite element solver that is based on a corotational approach and suitable for simulating flapping plate/shell-like wing structures undergoing small strains and large displacements/rotations. Partial verification and validation studies are presented on rectangular/elliptic wing structures to test the rigid body kinematics, nonlinear statics, and dynamics capabilities of the solver. Results obtained showed good agreement with available analytical/experimental/commercial solutions. The new structural dynamics formulation along with the numerical test cases contribute to the very limited set of tools and examples existing in the flapping-wing micro aerial vehicle literature. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FINITE element method KW - STRUCTURAL dynamics KW - STRUCTURAL analysis (Engineering) KW - AIRPLANE wings KW - KINEMATICS N1 - Accession Number: 57456122; Chimakurthi, Satish K. 1 Cesnik, Carlos E. S. 1 Stanford, Bret K. 2; Affiliation: 1: University of Michigan, Ann Arbor, Michigan 48109 2: U. S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45440; Source Info: Jan2011, Vol. 49 Issue 1, p128; Subject Term: FINITE element method; Subject Term: STRUCTURAL dynamics; Subject Term: STRUCTURAL analysis (Engineering); Subject Term: AIRPLANE wings; Subject Term: KINEMATICS; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 15p; Illustrations: 9 Diagrams, 6 Charts, 12 Graphs; Document Type: Article L3 - 10.2514/1.J050494 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57456122&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pedersen, T. AU - McCarrick, M. AU - Reinisch, B. AU - Watkins, B. AU - Hamel, R. AU - Paznukhov, V. T1 - Production of artificial ionospheric layers by frequency sweeping near the 2nd gyroharmonic. JO - Annales Geophysicae (09927689) JF - Annales Geophysicae (09927689) Y1 - 2011/01// VL - 29 IS - 1 M3 - Article SP - 47 EP - 51 SN - 09927689 AB - Artificial ionospheric plasmas descending from the background F-region have been observed on multiple occasions at the High Frequency Active Auroral Research Program (HAARP) facility since it reached full 3.6MW power. Proximity of the transmitter frequency to the 2nd harmonic of the electron gyrofrequency (2ƒce) has been noted as a requirement for their occurrence, and their disappearance after only a few minutes has been attributed to the increasing frequency mismatch at lower altitudes. We report new experiments employing frequency sweeps to match 2ƒce in the artificial plasmas as they descend. In addition to revealing the dependence on the 2ƒce resonance, this technique reliably produces descending plasmas in multiple transmitter beam positions and appears to increase their stability and lifetime. High-speed ionosonde measurements are used to monitor the altitude and density of the artificial plasmas during both the formation and decay stages. [ABSTRACT FROM AUTHOR] AB - Copyright of Annales Geophysicae (09927689) is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSPHERE -- Research KW - SPACE plasmas KW - ATMOSPHERIC ionization KW - AURORAS KW - MAGNETIC resonance KW - IONOSONDES KW - SPECTRA KW - Instruments and techniques) KW - Ionization mechanisms KW - Ionosphere (Active experiments N1 - Accession Number: 70105483; Pedersen, T. 1; Email Address: afrl.rvb.pa@hanscom.af.mil McCarrick, M. 2 Reinisch, B. 3 Watkins, B. 4 Hamel, R. 3 Paznukhov, V. 3; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA, USA 2: Marsh Creek LLC, McLean, VA, USA 3: Center for Atmospheric Research, University of Massachusetts Lowell, Lowell, MA, USA 4: Geophysical Institute, University of Alaska Fairbanks, College, AK, USA; Source Info: Jan2011, Vol. 29 Issue 1, p47; Subject Term: IONOSPHERE -- Research; Subject Term: SPACE plasmas; Subject Term: ATMOSPHERIC ionization; Subject Term: AURORAS; Subject Term: MAGNETIC resonance; Subject Term: IONOSONDES; Subject Term: SPECTRA; Author-Supplied Keyword: Instruments and techniques); Author-Supplied Keyword: Ionization mechanisms; Author-Supplied Keyword: Ionosphere (Active experiments; Number of Pages: 5p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.5194/angeo-29-47-2011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70105483&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Salnaitis, Christina L. AU - Baker, Crystal A. AU - Holland, James AU - Welsh, Marilyn T1 - Differentiating Tower of Hanoi Performance: Interactive Effects of Psychopathic Tendencies, Impulsive Response Styles, and Modality. JO - Applied Neuropsychology JF - Applied Neuropsychology Y1 - 2011/01// VL - 18 IS - 1 M3 - Article SP - 37 EP - 46 PB - Taylor & Francis Ltd SN - 09084282 AB - Previous research has demonstrated that performance on the computerized Tower of Hanoi is lower than performance on the manual Tower of Hanoi. The present study was conducted to elucidate potential factors that contribute to performance differences across modalities. Personality characteristics related to psychopathy and impulsive response styles were hypothesized to be correlates of poor performance on the computerized version of the Tower of Hanoi, which is a problem-solving task that requires working memory, planning, and inhibition. Eighty-four college students from a mid-sized university participated. Participants were grouped as low, middle, or high psychopathy based on their total scores on the Psychopathic Personality Inventory. A 2 (Modality) × 3 (Psychopathy) analysis of covariance, controlling for visuospatial working memory, yielded a significant interaction, in which the high psychopathy group did not differ in performance across modality, whereas the low and middle psychopathy groups performed more poorly on the computerized version. Subsequent analyses on reaction time and accuracy for the computerized modality indicated that a reflective, methodical approach to the computerized task was more productively utilized in the low psychopathy group, whereas the fast and accurate approach was more productively utilized in the high psychopathy group. These results suggest that individuals with elevated psychopathic tendencies within a normal population are not necessarily deficient in problem-solving performance on the Tower of Hanoi. Impulsive responding is associated with poor performance in the computerized version of the Tower of Hanoi, irrespective of psychopathic tendencies. Caution should be exercised in interpreting scores on the computerized Tower of Hanoi because the psychometric properties required for comparability with the manual version have not been sufficiently demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Neuropsychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PSYCHOPATHS KW - PSYCHOLOGY KW - ANTISOCIAL personality disorders KW - RESEARCH KW - IMPULSIVE personality KW - PROBLEM solving KW - EXECUTIVE function (Neuropsychology) KW - MODALITY (Theory of knowledge) KW - PSYCHOLOGICAL aspects KW - executive function KW - impulsivity KW - modality KW - psychopathy KW - Tower of Hanoi N1 - Accession Number: 59131829; Salnaitis, Christina L. 1; Email Address: christina.salnaitis@usafa.edu Baker, Crystal A. 2 Holland, James 2 Welsh, Marilyn 2; Affiliation: 1: Department of Behavioral Science and Leadership, United States Air Force Academy, Colorado, U.S.A. 2: School of Psychological Science, University of Northern Colorado, Greeley, Colorado, U.S.A.; Source Info: 2011, Vol. 18 Issue 1, p37; Subject Term: PSYCHOPATHS; Subject Term: PSYCHOLOGY; Subject Term: ANTISOCIAL personality disorders; Subject Term: RESEARCH; Subject Term: IMPULSIVE personality; Subject Term: PROBLEM solving; Subject Term: EXECUTIVE function (Neuropsychology); Subject Term: MODALITY (Theory of knowledge); Subject Term: PSYCHOLOGICAL aspects; Author-Supplied Keyword: executive function; Author-Supplied Keyword: impulsivity; Author-Supplied Keyword: modality; Author-Supplied Keyword: psychopathy; Author-Supplied Keyword: Tower of Hanoi; Number of Pages: 10p; Illustrations: 2 Charts, 5 Graphs; Document Type: Article L3 - 10.1080/09084282.2010.523381 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59131829&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kulatilaka, W. AU - Gord, J. AU - Roy, S. T1 - Effects of O-CO polarization beating on femtosecond coherent anti-Stokes Raman scattering (fs-CARS) spectroscopy of O. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2011/01// VL - 102 IS - 1 M3 - Article SP - 141 EP - 147 PB - Springer Science & Business Media B.V. SN - 09462171 AB - Femtosecond coherent anti-Stokes Raman scattering (fs-CARS) spectroscopy has recently emerged as a promising laser-based temperature-measurement technique in flames. In fs-CARS, the broad spectral bandwidths of the pump and Stokes lasers permit the coupling of each ro-vibrational Raman transition via a large number of pump-Stokes photon pairs, creating a strong Raman coherence. However, the broad-bandwidth fs pulses also excite other molecular transitions that are in resonance. The polarization beating between these closely spaced Raman transitions can affect the coherence dephasing rate of the target molecule, making it difficult to extract accurate medium temperature. In a previous study our group investigated N/CO polarization beating in N fs-CARS; in the present work we study O/CO polarization beating in O fs-CARS. O fs-CARS can be particularly important for thermometry in non-air-breathing combustion in the absence of N. The effects of O/CO polarization beating are investigated in the temperature range 300-900 K at atmospheric pressure and also at 300 K for pressures up to 10 bar. Unlike in the N/CO system, it was observed in the O/CO system that the presence of CO can significantly alter the time evolution of the Raman coherence and, hence, affect the measured temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL polarization KW - CARBON monoxide -- Spectra KW - OXYGEN KW - COHERENCE (Optics) KW - RAMAN effect KW - RAMAN spectroscopy KW - LASERS KW - TEMPERATURE measurements N1 - Accession Number: 57407526; Kulatilaka, W. 1; Email Address: waruna.kulatilaka@wpafb.af.mil Gord, J. 2 Roy, S. 1; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield Street, Suite 301 Dayton 45431 USA 2: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB 45433 USA; Source Info: Jan2011, Vol. 102 Issue 1, p141; Subject Term: OPTICAL polarization; Subject Term: CARBON monoxide -- Spectra; Subject Term: OXYGEN; Subject Term: COHERENCE (Optics); Subject Term: RAMAN effect; Subject Term: RAMAN spectroscopy; Subject Term: LASERS; Subject Term: TEMPERATURE measurements; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 7p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1007/s00340-010-4188-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57407526&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Biffinger, Justin C. AU - Fitzgerald, Lisa A. AU - Ray, Ricky AU - Little, Brenda J. AU - Lizewski, Stephen E. AU - Petersen, Emily R. AU - Ringeisen, Bradley R. AU - Sanders, Wesley C. AU - Sheehan, Paul E. AU - Pietron, Jeremy J. AU - Baldwin, Jeffrey W. AU - Nadeau, Lloyd J. AU - Johnson, Glenn R. AU - Ribbens, Meghann AU - Finkel, Steven E. AU - Nealson, Kenneth H. T1 - The utility of Shewanella japonica for microbial fuel cells JO - Bioresource Technology JF - Bioresource Technology Y1 - 2011/01// VL - 102 IS - 1 M3 - Article SP - 290 EP - 297 SN - 09608524 AB - Abstract: Shewanella-containing microbial fuel cells (MFCs) typically use the fresh water wild-type strain Shewanella oneidensis MR-1 due to its metabolic diversity and facultative oxidant tolerance. However, S. oneidensis MR-1 is not capable of metabolizing polysaccharides for extracellular electron transfer. The applicability of Shewanella japonica (an agar-lytic Shewanella strain) for power applications was analyzed using a diverse array of carbon sources for current generation from MFCs, cellular physiological responses at an electrode surface, biofilm formation, and the presence of soluble extracellular mediators for electron transfer to carbon electrodes. Critically, air-exposed S. japonica utilizes biosynthesized extracellular mediators for electron transfer to carbon electrodes with sucrose as the sole carbon source. [ABSTRACT FROM AUTHOR] AB - Copyright of Bioresource Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHEWANELLA KW - MICROBIAL fuel cells KW - CARBOHYDRATES KW - SUCROSE KW - POLYSACCHARIDES KW - CHARGE exchange KW - CARBON electrodes KW - BACTERIA -- Metabolism KW - Carbohydrate KW - Mediators KW - Microbial fuel cell KW - Shewanella KW - Sucrose N1 - Accession Number: 54101089; Biffinger, Justin C. 1; Email Address: justin.biffinger@nrl.navy.mil Fitzgerald, Lisa A. 1 Ray, Ricky 2 Little, Brenda J. 2 Lizewski, Stephen E. 1 Petersen, Emily R. 3 Ringeisen, Bradley R. 1 Sanders, Wesley C. 1 Sheehan, Paul E. 1 Pietron, Jeremy J. 1 Baldwin, Jeffrey W. 4 Nadeau, Lloyd J. 5 Johnson, Glenn R. 5 Ribbens, Meghann 6 Finkel, Steven E. 6 Nealson, Kenneth H. 7; Affiliation: 1: Chemistry Division, US Naval Research Laboratory, 4555 Overlook Avenue, SW, Washington, DC 20375, USA 2: Oceanography Division, US Naval Research Laboratory, Bldg 1009, John C. Stennis Space Center, MS 39529, USA 3: Nova Research Inc., 1900 Elkin St., Suite 230, Alexandria, VA 22308, USA 4: Acoustics Division, US Naval Research Laboratory, 4555 Overlook Avenue, SW, Washington, DC 20375, USA 5: Microbiology & Applied Biochemistry Division, Air Force Research Laboratory, 139 Barnes Drive, Suite #2, Tyndall AFB, FL 32403, USA 6: Molecular and Computational Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA 90089-2910, USA 7: Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089-0740, USA; Source Info: Jan2011, Vol. 102 Issue 1, p290; Subject Term: SHEWANELLA; Subject Term: MICROBIAL fuel cells; Subject Term: CARBOHYDRATES; Subject Term: SUCROSE; Subject Term: POLYSACCHARIDES; Subject Term: CHARGE exchange; Subject Term: CARBON electrodes; Subject Term: BACTERIA -- Metabolism; Author-Supplied Keyword: Carbohydrate; Author-Supplied Keyword: Mediators; Author-Supplied Keyword: Microbial fuel cell; Author-Supplied Keyword: Shewanella; Author-Supplied Keyword: Sucrose; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.biortech.2010.06.078 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54101089&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morscher, Gregory N. AU - John, Reji AU - Zawada, Larry AU - Brewer, David AU - Ojard, Greg AU - Calomino, Anthony T1 - Creep in vacuum of woven Sylramic-iBN melt-infiltrated composites JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2011/01// VL - 71 IS - 1 M3 - Article SP - 52 EP - 59 SN - 02663538 AB - Abstract: In order to better understand the effect of stressed-oxidation, the performance of woven Sylramic-iBN fiber-reinforced slurry cast melt-infiltrated (MI) composites were tested in creep and fatigue under non-oxidizing conditions. Initially creep and fatigue tests were performed at 1204°C in an argon atmosphere; however, it was observed that sufficient oxidizing species existed in the environment to degrade the composites in a manner similar to air environments. Therefore, creep and fatigue tests were performed at 1204°C in a vacuum environment which showed no evidence of oxidation and superior properties to composites subjected to stressed-oxidation conditions. The mechanical results and microscopy of the vacuum and argon are compared to the behavior of these composites tested in air. It was found that the stress-rupture properties of the vacuum-tested composites could be predicted from single fiber creep rupture data assuming reasonable values for the Weibull modulus. [ABSTRACT FROM AUTHOR] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIBER-reinforced ceramics KW - CREEP (Materials) KW - STRETCH woven textiles KW - VACUUM metallurgy KW - OXIDATIVE stress KW - MATERIALS -- Fatigue KW - COMPARATIVE studies KW - WEIBULL distribution KW - A. Ceramic–matrix composites (CMCs) KW - B. Environmental degradation KW - B. Thermomechanical properties N1 - Accession Number: 55502238; Morscher, Gregory N. 1; Email Address: gm33@uakron.edu John, Reji 2 Zawada, Larry 2 Brewer, David 3 Ojard, Greg 4 Calomino, Anthony 5; Affiliation: 1: The University of Akron, Department of Mechanical Engineering, Akron, OH, United States 2: Air Force Research Laboratory, AFRL/RXL, Wright–Patterson AFB, OH, United States 3: NASA Langley Research Center, Langley, VA, United States 4: Pratt & Whitney, East Hartford, CT, United States 5: NASA Glenn Research Center, Cleveland, OH, United States; Source Info: Jan2011, Vol. 71 Issue 1, p52; Subject Term: FIBER-reinforced ceramics; Subject Term: CREEP (Materials); Subject Term: STRETCH woven textiles; Subject Term: VACUUM metallurgy; Subject Term: OXIDATIVE stress; Subject Term: MATERIALS -- Fatigue; Subject Term: COMPARATIVE studies; Subject Term: WEIBULL distribution; Author-Supplied Keyword: A. Ceramic–matrix composites (CMCs); Author-Supplied Keyword: B. Environmental degradation; Author-Supplied Keyword: B. Thermomechanical properties; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.compscitech.2010.10.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55502238&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Perlovsky, Leonid T1 - Language and Cognition Interaction Neural Mechanisms. JO - Computational Intelligence & Neuroscience JF - Computational Intelligence & Neuroscience Y1 - 2011/01// M3 - Article SP - 1 EP - 13 SN - 16875265 AB - How language and cognition interact in thinking? Is language just used for communication of completed thoughts, or is it fundamental for thinking? Existing approaches have not led to a computational theory. We develop a hypothesis that language and cognition are two separate but closely interacting mechanisms. Language accumulates cultural wisdom; cognition develops mental representations modeling surrounding world and adapts cultural knowledge to concrete circumstances of life. Language is acquired from surrounding language "ready-made" and therefore can be acquired early in life. This early acquisition of language in childhood encompasses the entire hierarchy from sounds to words, to phrases, and to highest concepts existing in culture. Cognition is developed from experience. Yet cognition cannot be acquired from experience alone; language is a necessary intermediary, a "teacher." A mathematical model is developed; it overcomes previous difficulties and leads to a computational theory. This model is consistent with Arbib's "language prewired brain" built on top of mirror neuron system. It models recent neuroimaging data about cognition, remaining unnoticed by other theories. A number of properties of language and cognition are explained, which previously seemed mysterious, including influence of language grammar on cultural evolution, which may explain specifics of English and Arabic cultures. [ABSTRACT FROM AUTHOR] AB - Copyright of Computational Intelligence & Neuroscience is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LANGUAGE & languages -- Cognitive processing KW - NEURAL circuitry KW - LANGUAGE acquisition KW - BRAIN imaging KW - COGNITION & culture KW - LANGUAGE & logic KW - LINGUISTICS N1 - Accession Number: 94181613; Perlovsky, Leonid 1; Email Address: leonid@seas.harvard.edu; Affiliation: 1: Harvard University and Air Force Research Laboratory, Harvard University, SEAS, Cambridge, MA 02446, USA; Source Info: 2011, p1; Subject Term: LANGUAGE & languages -- Cognitive processing; Subject Term: NEURAL circuitry; Subject Term: LANGUAGE acquisition; Subject Term: BRAIN imaging; Subject Term: COGNITION & culture; Subject Term: LANGUAGE & logic; Subject Term: LINGUISTICS; Number of Pages: 13p; Document Type: Article L3 - 10.1155/2011/454587 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=94181613&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wisman, David AU - Ganguly, Biswa T1 - Point-to-plane corona discharge for high-speed reacting flow visualization. JO - Experiments in Fluids JF - Experiments in Fluids Y1 - 2011/01// VL - 50 IS - 1 M3 - Article SP - 35 EP - 42 SN - 07234864 AB - We present the results of a novel technique for the high-speed visualization of a flame reaction zone using a streamer-initiated point-to-plane unipolar pulsed corona discharge. Our results show images of the flame front under conditions of natural hydrodynamic flame instability, as well as external air flow modulation induced flame instability. This technique can potentially be used as a high-speed 2-D flow visualization diagnostic tool to monitor flow instabilities in reacting and non-reacting fluids that have a density gradient. We also show that this technique does not modify the flame characteristics in any measurable way, if the high electric field region of the streamer/corona discharge is located in the downstream region. [ABSTRACT FROM AUTHOR] AB - Copyright of Experiments in Fluids is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 57242615; Wisman, David 1,2 Ganguly, Biswa 3; Email Address: Biswa.ganguly@wpafb.af.mil; Affiliation: 1: Aerospace Power and Propulsion Division, UES Inc., Dayton, OH 45432, USA 2: NSWC-Crane, Crane, IN 47522, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH 45433, USA; Source Info: Jan2011, Vol. 50 Issue 1, p35; Number of Pages: 8p; Illustrations: 10 Graphs; Document Type: Article L3 - 10.1007/s00348-010-0890-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57242615&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tuegel, Eric J. AU - Ingraffea, Anthony R. AU - Eason, Thomas G. AU - Spottswood, S.Michael T1 - Reengineering Aircraft Structural Life Prediction Using a Digital Twin. JO - International Journal of Aerospace Engineering JF - International Journal of Aerospace Engineering Y1 - 2011/01// M3 - Article SP - 1 EP - 14 SN - 16875966 AB - Reengineering of the aircraft structural life prediction process to fully exploit advances in very high performance digital computing is proposed. The proposed process utilizes an ultrahigh fidelity model of individual aircraft by tail number, a Digital Twin, to integrate computation of structural deflections and temperatures in response to flight conditions, with resulting local damage and material state evolution. A conceptual model of how the Digital Twin can be used for predicting the life of aircraft structure and assuring its structural integrity is presented. The technical challenges to developing and deploying a Digital Twin are discussed in detail. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aerospace Engineering is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL models KW - AIRCRAFT industry KW - FLIGHT KW - AIRPLANES KW - PREDICTION (Logic) KW - CONCEPTUAL models KW - PERFORMANCE evaluation N1 - Accession Number: 71099267; Tuegel, Eric J. 1; Email Address: eric.tuegel@wpafb.af.mil Ingraffea, Anthony R. 2 Eason, Thomas G. 1 Spottswood, S.Michael 1; Affiliation: 1: Structural Sciences Center, Air Vehicles Directorate, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA 2: School of Civil and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA; Source Info: 2011, p1; Subject Term: MATHEMATICAL models; Subject Term: AIRCRAFT industry; Subject Term: FLIGHT; Subject Term: AIRPLANES; Subject Term: PREDICTION (Logic); Subject Term: CONCEPTUAL models; Subject Term: PERFORMANCE evaluation; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 441220 Motorcycle, boat and other motor vehicle dealers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 441228 Motorcycle, ATV, and All Other Motor Vehicle Dealers; Number of Pages: 14p; Illustrations: 7 Diagrams, 1 Graph; Document Type: Article L3 - 10.1155/2011/154798 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=71099267&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maji, Arup K. AU - Harris, Mark AU - Garcia, Daniel AU - deBlonk, Brett J. T1 - Feasibility Assessment of Deployable Composite Telescope. JO - Journal of Aerospace Engineering JF - Journal of Aerospace Engineering Y1 - 2011/01// VL - 24 IS - 1 M3 - Article SP - 12 EP - 19 PB - American Society of Civil Engineers SN - 08931321 AB - Volume constraints in existing launch vehicles require large space-based sensors to be folded during launch and subsequently deployed in space. This paper outlines the development of a prototype deployable astronomical telescope that would maintain both structural stability and optical alignment for potential space-based deployment. To achieve this goal, the structure must possess adequate stiffness and maintain its positional accuracy after a deployment cycle has ensued. The development and testing were based on a consumer-astronomy Newtonian telescope. A foldable carbon-epoxy composite replacement structure was integrated to replace the aluminum-truss assembly provided by the manufacturer. The composite telescope's structure and optical output were evaluated using computational (finite-element analyses and closed-form equations) and experimental methods. The structure was subjected to postdeployment displacement tests to quantify alignment accuracy. The stresses introduced in folding the tape springs were evaluated for both magnitude and mode of failure using the Tsai-Wu failure criterion. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerospace Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FEASIBILITY studies KW - TELESCOPES KW - LAUNCH vehicles (Astronautics) KW - DETECTORS KW - PROTOTYPES KW - STRUCTURAL stability KW - FINITE element method N1 - Accession Number: 55830964; Maji, Arup K. 1 Harris, Mark 2 Garcia, Daniel 2 deBlonk, Brett J. 3; Affiliation: 1: Professor and Interim Dean, Univ. of New Mexico, MSC 01 1070, Albuquerque, NM 87131 (corresponding author). 2: Graduate Research Assistant, Univ. of New Mexico, MSC 01 1070, Albuquerque, NM 87131. 3: Technical Advisor, Spacecraft Component Technologies Branch, Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117.; Source Info: Jan2011, Vol. 24 Issue 1, p12; Subject Term: FEASIBILITY studies; Subject Term: TELESCOPES; Subject Term: LAUNCH vehicles (Astronautics); Subject Term: DETECTORS; Subject Term: PROTOTYPES; Subject Term: STRUCTURAL stability; Subject Term: FINITE element method; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 453999 All other miscellaneous store retailers (except beer and wine-making supplies stores); Number of Pages: 8p; Document Type: Article L3 - 10.1061/(ASCE)AS.1943-5525.0000045 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55830964&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jordan, Jennifer L. AU - Herbold, Eric B. AU - Sutherland, Gerrit AU - Fraser, Andrew AU - Borg, John AU - Richards, D. Wayne T1 - Shock equation of state of multi-constituent epoxy-metal particulate composites. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/01// VL - 109 IS - 1 M3 - Article SP - 013531 PB - American Institute of Physics SN - 00218979 AB - The shock properties of epoxy-based particulate composites have been extensively studied in the literature. Generally, these materials only have a single particulate phase; typically alumina. This paper presents equation of state experiments conducted on five epoxy-based particulate composites. The shock stress and shock velocity states were measured for five different composites: two epoxy-aluminum two-phase composites, with various amounts of aluminum, and three epoxy-aluminum-(metal) composites, where the metal constituent was either copper, nickel, or tungsten. The impact velocities ranged from 300 to 960 m/s. Numerical simulations of the experiments of epoxy-Al are compared with mesoscale simulations of epoxy-Al2O3 composites to investigate the effect of the soft versus hard particulate; additionally, an epoxy-Al-W simulation was conducted to investigate the material properties of the second phase on shock response of these materials. In these epoxy-based particulate composites, the slope of the shock velocity-particle velocity curve appears to depend on the epoxy binder. It is shown that the addition of only 10 vol % of a second, denser metallic phase significantly affects the shock response in these composites. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPOXY resins KW - ALUMINUM oxide KW - ALUMINUM silicates KW - COMPOSITE materials KW - SIMULATION methods & models N1 - Accession Number: 57378589; Jordan, Jennifer L. 1; Email Address: jennifer.jordan@eglin.af.mil Herbold, Eric B. 2 Sutherland, Gerrit 3 Fraser, Andrew 4 Borg, John 4 Richards, D. Wayne 1; Affiliation: 1: Air Force Research Laboratory, AFRL/RW, Eglin AFB, Florida 32542, USA 2: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA 3: Naval Surface Warfare Center, Indian Head, Maryland 20640, USA 4: Department of Mechanical Engineering, Marquette University, Milwaukee, Wisconsin 53233, USA; Source Info: Jan2011, Vol. 109 Issue 1, p013531; Subject Term: EPOXY resins; Subject Term: ALUMINUM oxide; Subject Term: ALUMINUM silicates; Subject Term: COMPOSITE materials; Subject Term: SIMULATION methods & models; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; Number of Pages: 8p; Illustrations: 1 Black and White Photograph, 6 Charts, 7 Graphs; Document Type: Article L3 - 10.1063/1.3531579 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57378589&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abdel-Motaleb, Ibrahim AU - Shetty, Neeraj AU - Leedy, Kevin AU - Cortez, Rebecca T1 - Investigation of the drain current shift in ZnO thin film transistors. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2011/01// VL - 109 IS - 1 M3 - Article SP - 014503 PB - American Institute of Physics SN - 00218979 AB - A ZnO thin film transistor (TFT), with barium strontium titanate (BST) as a gate oxide, has been fabricated and characterized. The ZnO and the BST layers were deposited using pulsed laser deposition. The I-V characteristics were measured, and an upward shift in the drain current was observed when the voltage sweeping was repeated. The reasons for this shift were investigated and it was found that the shift could be attributed to the combination effect of the reduction in the built-in potential of the grain boundaries, the population and depopulation of trap centers in the channel, and the existence of mobile charges in the gate oxide layer. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide KW - BARIUM compounds KW - THIN film transistors KW - CRYSTAL growth KW - CRYSTAL grain boundaries KW - SOLID state electronics N1 - Accession Number: 57378695; Abdel-Motaleb, Ibrahim 1; Email Address: ibrahim@ceet.niu.edu Shetty, Neeraj 1 Leedy, Kevin 2 Cortez, Rebecca 3; Affiliation: 1: Department of Electrical Engineering, Northern Illinois University, DeKalb, IL 60115, USA 2: Sensors Directorate, 2241 Avionics Circle, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 3: Department of Mechanical Engineering, 807 Union Street, Union College, Schenectady, NY 12308, USA; Source Info: Jan2011, Vol. 109 Issue 1, p014503; Subject Term: ZINC oxide; Subject Term: BARIUM compounds; Subject Term: THIN film transistors; Subject Term: CRYSTAL growth; Subject Term: CRYSTAL grain boundaries; Subject Term: SOLID state electronics; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 5p; Illustrations: 1 Black and White Photograph, 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.3525998 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57378695&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yizengaw, E. AU - Moldwin, M.B. AU - Mebrahtu, A. AU - Damtie, B. AU - Zesta, E. AU - Valladares, C.E. AU - Doherty, P. T1 - Comparison of storm time equatorial ionospheric electrodynamics in the African and American sectors JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2011/01// VL - 73 IS - 1 M3 - Article SP - 156 EP - 163 SN - 13646826 AB - Abstract: The characteristics of storm time (corotating interaction regions (CIR)-driven storm that happened on 9 August 2008) equatorial electrojet (EEJ) phenomena and their effect on the ionospheric density structure at two different longitudinal sectors are presented. Equatorial magnetometer data, occultation density profiles from COSMIC and CHAMP LEO satellites, and ground-based GPS TEC are used. We find unusual density reduction around local noon at the same time when we observe the reversal of electrojet current and thus counter-equatorial electrojet (CEJ) signatures. The continuous energy deposition in to high latitudes due to the CIR-driven storm that triggers the E-region dynamo and the penetrating magnetospheric origin electric field is suggested to be responsible for the reversal of equatorial electrojet current flows. We also compare the magnitude and direction of the driving force (E×B drift) in the American and African sectors for the first time. It was found that at the same local time the E×B drift in the American sector is stronger than that of the African sector. Previously, the uneven distribution of ground-based instruments hindered our ability to obtain a global understanding of the dynamics and structure of the ionosphere. The newly deployed ground-based instruments, primarily in the African sector, provide the opportunity to observe the governing equatorial electrodynamics simultaneously with the ionospheric density structures detected by the instrument onboard low-Earth-orbit (LEO) satellites. To our knowledge this is the first simultaneous observation performed in the African sector. This case study may provide additional input that could be used to explain the unique density irregularities that are often seen from in situ satellite observation in the African sector, a region that has been devoid of ground-based instrumentations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSPHERE KW - ELECTRODYNAMICS KW - LONGITUDINAL method KW - MAGNETOSPHERE KW - EQUATORIAL electrojet KW - DYNAMICS KW - ELECTRIC fields KW - CIR-driven storm KW - Electric fields KW - Equatorial Electrojet KW - Equatorial ionosphere N1 - Accession Number: 57301632; Yizengaw, E. 1; Email Address: kassie@bc.edu Moldwin, M.B. 2 Mebrahtu, A. 3 Damtie, B. 4 Zesta, E. 5 Valladares, C.E. 1 Doherty, P. 1; Affiliation: 1: Institute for Scientific Research, Boston College, Boston, USA 2: Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, USA 3: Department of Physics, Mekelle University, Mekelle, Ethiopia 4: Washera Geospace and Radar Science Laboratory, Bahir Dar University, Bahir Dar, Ethiopia 5: Air Force Research Laboratory, AFRL/VSBXP, Hanscom AFB, USA; Source Info: Jan2011, Vol. 73 Issue 1, p156; Subject Term: IONOSPHERE; Subject Term: ELECTRODYNAMICS; Subject Term: LONGITUDINAL method; Subject Term: MAGNETOSPHERE; Subject Term: EQUATORIAL electrojet; Subject Term: DYNAMICS; Subject Term: ELECTRIC fields; Author-Supplied Keyword: CIR-driven storm; Author-Supplied Keyword: Electric fields; Author-Supplied Keyword: Equatorial Electrojet; Author-Supplied Keyword: Equatorial ionosphere; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jastp.2010.08.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57301632&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tschopp, M. A. AU - Wilks, G. B. AU - Spowart, J. E. T1 - Multiscale Characterization of Spatial Heterogeneity in Multiphase Composite Microstructures. JO - Journal of Engineering Materials & Technology JF - Journal of Engineering Materials & Technology Y1 - 2011/01// VL - 133 IS - 1 M3 - Article SP - 11004.1 EP - 11004.5 SN - 00944289 AB - A computational characterization technique is presented for assessing the spatial heterogeneity of two reactant phases in a three-phase chemically reactive composite. This technique estimates the reaction yield on multiple microstructure length scales based on the segregation of the two reactant phases and the expected reaction stoichiometry. The result of this technique is a metric, quantifying the effectiveness of phase mixing in a particular microstructure as a function of length scale. Assuming that the proportionate mixing of reactant phases on multiple length scales will enhance reaction kinetics and the overall level of reaction completion, this tool can subsequently be used as a figure-of-merit for optimizing microstructure via appropriate processing. To illustrate this point, an example is shown where a bimodal three-phase microstructure has a higher reaction yield at every length scale when compared with a monomodal three-phase microstructure with the same constituent loading. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering Materials & Technology is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - STOICHIOMETRY KW - CONTINUUM mechanics KW - MICROMECHANICS KW - COMPOSITE materials KW - multiscale characterization KW - reactivity KW - three-phase composite microstructure N1 - Accession Number: 62969420; Tschopp, M. A. 1 Wilks, G. B. 2,3 Spowart, J. E. 2; Affiliation: 1: Center for Advanced Vehicular Systems, Mississippi State University, Starkville, MS 39762 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright Patterson AFB, OH 45433 3: General Dynamics Corporation, Dayton, OH 45431; Source Info: Jan2011, Vol. 133 Issue 1, p11004.1; Subject Term: MICROSTRUCTURE; Subject Term: STOICHIOMETRY; Subject Term: CONTINUUM mechanics; Subject Term: MICROMECHANICS; Subject Term: COMPOSITE materials; Author-Supplied Keyword: multiscale characterization; Author-Supplied Keyword: reactivity; Author-Supplied Keyword: three-phase composite microstructure; Number of Pages: 5p; Document Type: Article L3 - 10.1115/1.4002639 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62969420&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Hoon AU - Owens, Jeffery T1 - Motion of liquid droplets on a superhydrophobic oleophobic surface. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2011/01// VL - 46 IS - 1 M3 - Article SP - 69 EP - 76 PB - Springer Science & Business Media B.V. SN - 00222461 AB - Developing a superhydrophobic oleophobic material is achieved by two criteria: low surface energy and properly designed surface morphology. The relationships among surface tensions, contact angles, contact angle hystereses, roll-off angles, and surface morphologies of such materials are studied. Numerical formulae related to the surface energy of liquids and solids are used to predict the wetting behavior of superhydrophobic and oleophobic materials. Using chemical and geometrical modifications, a superhydrophobic oleophobic surface was prepared. Good agreement between the predicted and measured contact angles and roll-off angles were obtained. The effect of the contact angle hysteresis on the roll-off angle is described to understand the motion of a droplet when the droplet begins to roll off. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROPHOBIC surfaces KW - MORPHOLOGY KW - LIQUIDS KW - SURFACE tension KW - CONTACT angle KW - HYSTERESIS N1 - Accession Number: 56522990; Lee, Hoon 1; Email Address: hoonjoo•lee@ncsu.edu Owens, Jeffery 2; Affiliation: 1: College of Textiles, North Carolina State University, 2401 Research Drive Raleigh 27695 USA 2: Air Force Research Laboratory, RXQL, 139 Barnes Drive, Building 1117 Tyndall Air Force Base 32403 USA; Source Info: Jan2011, Vol. 46 Issue 1, p69; Subject Term: HYDROPHOBIC surfaces; Subject Term: MORPHOLOGY; Subject Term: LIQUIDS; Subject Term: SURFACE tension; Subject Term: CONTACT angle; Subject Term: HYSTERESIS; Number of Pages: 8p; Illustrations: 3 Color Photographs, 2 Black and White Photographs, 1 Diagram, 2 Charts; Document Type: Article L3 - 10.1007/s10853-010-4810-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=56522990&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zameroski, Nathan D. AU - Hager, Gordon D. AU - Rudolph, Wolfgang AU - Erickson, Christopher J. AU - Hostutler, David A. T1 - Pressure broadening and collisional shift of the Rb D2 absorption line by CH4, C2H6, C3H8, n-C4H10, and He JO - Journal of Quantitative Spectroscopy & Radiative Transfer JF - Journal of Quantitative Spectroscopy & Radiative Transfer Y1 - 2011/01// VL - 112 IS - 1 M3 - Article SP - 59 EP - 67 SN - 00224073 AB - Abstract: The pressure broadening and shift rates of the rubidium D2 absorption line 52S1/2→52P3/2 (780.24nm) with CH4, C2H6, C3H8, n-C4H10, and He were measured for pressures ≤80 Torr using high-resolution laser spectroscopy. The broadening rates γ B for CH4, C2H6, C3H8, n-C4H10, and He are 28.0, 28.1, 30.5, 31.3, and 20.3 (MHz/Torr), respectively. The corresponding shift rates γ S are −8.4, −8.8, −9.7, −10.0, and 0.39 (MHz/Torr), respectively. The measured rates of Rb for the hydrocarbon buffer gas series of this study are also compared to the theoretically calculated rates of a purely attractive van der Waals difference potential. Good agreement is found to exist between measured and theoretical rates. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Quantitative Spectroscopy & Radiative Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRESSURE broadening KW - ABSORPTION spectra KW - METAL vapor lasers KW - LASER spectroscopy KW - RUBIDIUM KW - DIODES KW - Absorption spectroscopy KW - Diode pumped alkali metal vapor lasers (DPALs) KW - Pressure broadening N1 - Accession Number: 54882475; Zameroski, Nathan D. 1; Email Address: ndz103@hotmail.com Hager, Gordon D. 2 Rudolph, Wolfgang 3 Erickson, Christopher J. 4 Hostutler, David A. 5; Affiliation: 1: Department of Electrical and Computer Engineering, the University of New Mexico, Albuquerque, NM 87131, USA 2: Department of Engineering Physics, Air Force Institute of Technology, Wright Patterson Air Force Base, OH 45433, USA 3: Department of Physics and Astronomy, the University of New Mexico, Albuquerque, NM 87131, USA 4: Department of Physics and Astronomy, Brigham Young University, Provo, UT 84602, USA 5: Directed Energy Directorate, Air Force Research Laboratory, Kirtland Air Force Base, NM 87117, USA; Source Info: Jan2011, Vol. 112 Issue 1, p59; Subject Term: PRESSURE broadening; Subject Term: ABSORPTION spectra; Subject Term: METAL vapor lasers; Subject Term: LASER spectroscopy; Subject Term: RUBIDIUM; Subject Term: DIODES; Author-Supplied Keyword: Absorption spectroscopy; Author-Supplied Keyword: Diode pumped alkali metal vapor lasers (DPALs); Author-Supplied Keyword: Pressure broadening; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jqsrt.2010.08.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54882475&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lane, Steven A. AU - Murphey, Thomas W. AU - Zatman, Michael T1 - Overview of the Innovative Space-Based Radar Antenna Technology Program. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2011/01//Jan/Feb2011 VL - 48 IS - 1 M3 - Article SP - 135 EP - 145 SN - 00224650 AB - The U.S. Air Force Research Laboratory and Defense Advanced Research Projects Agency accomplished technology development and demonstration toward a 300 m deployable space antenna under the Innovative Space-Based Radar Antenna Technology program. Risk-reduction activities focused on deployment testing, calibration, structural metrology, and real-time compensation. A 12 m phased-array-fed reflector engineering test unit was tested in a laboratory environment and demonstrated shaping of a single-curved, parabolic-cylinder mesh surface and deployment repeatability. A 12 m engineering test unit using rigidizable-inflatable structural components was also tested, but this approach was more problematic and less robust. Finally, two antenna metrology and compensation engineering test units were tested in a compact range. The results from one were reported. Data showed that the closed-loop system minimized phase error to less than 1/30 of a wavelength, given realistic disturbance inputs. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR -- Antennas KW - SPACE-based radar KW - RADAR receiving apparatus KW - SPACE environment KW - AIR Force Research Laboratory (Edwards Air Force Base, Calif.) N1 - Accession Number: 59289047; Lane, Steven A. 1 Murphey, Thomas W. 1 Zatman, Michael 2; Affiliation: 1: U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117 2: QinetiQ North America, Arlington, Virginia 22202; Source Info: Jan/Feb2011, Vol. 48 Issue 1, p135; Subject Term: RADAR -- Antennas; Subject Term: SPACE-based radar; Subject Term: RADAR receiving apparatus; Subject Term: SPACE environment; Company/Entity: AIR Force Research Laboratory (Edwards Air Force Base, Calif.); NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 11p; Illustrations: 8 Color Photographs, 10 Diagrams, 1 Chart, 9 Graphs; Document Type: Article L3 - 10.2514/1.50252 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59289047&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Goodman, Michael D. AU - Makley, Amy T. AU - Huber, Nathan L. AU - Clarke, Callisia N. AU - Friend, Lou Ann W. AU - Schuster, Rebecca M. AU - Bailey, Stephanie R. AU - Barnes, Stephen L. AU - Dorlac, Warren C. AU - Johannigman, Jay A. AU - Lentsch, Alex B. AU - Pritts, Timothy A. T1 - Hypobaric Hypoxia Exacerbates the Neuroinflammatory Response to Traumatic Brain Injury JO - Journal of Surgical Research JF - Journal of Surgical Research Y1 - 2011/01// VL - 165 IS - 1 M3 - Article SP - 30 EP - 37 SN - 00224804 AB - Objective: To determine the inflammatory effects of time-dependent exposure to the hypobaric environment of simulated aeromedical evacuation following traumatic brain injury (TBI). Methods: Mice were subjected to a blunt TBI or sham injury. Righting reflex response (RRR) time was assessed as an indicator of neurologic recovery. Three or 24 h (Early and Delayed groups, respectively) after TBI, mice were exposed to hypobaric flight conditions (Fly) or ground-level control (No Fly) for 5 h. Arterial blood gas samples were obtained from all groups during simulated flight. Serum and cortical brain samples were analyzed for inflammatory cytokines after flight. Neuron specific enolase (NSE) was measured as a serum biomarker of TBI severity. Results: TBI resulted in prolonged RRR time compared with sham injury. After TBI alone, serum levels of interleukin-6 (IL-6) and keratinocyte-derived chemokine (KC) were increased by 6 h post-injury. Simulated flight significantly reduced arterial oxygen saturation levels in the Fly group. Post-injury altitude exposure increased cerebral levels of IL-6 and macrophage inflammatory protein-1α (MIP-1α), as well as serum NSE in the Early but not Delayed Flight group compared to ground-level controls. Conclusions: The hypobaric environment of aeromedical evacuation results in significant hypoxia. Early, but not delayed, exposure to a hypobaric environment following TBI increases the neuroinflammatory response to injury and the severity of secondary brain injury. Optimization of the post-injury time to fly using serum cytokine and biomarker levels may reduce the potential secondary cerebral injury induced by aeromedical evacuation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Surgical Research is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANOXEMIA KW - BRAIN -- Wounds & injuries KW - DISEASE exacerbation KW - BLOOD analysis KW - MATHEMATICAL optimization KW - CYTOKINES KW - BIOCHEMICAL markers KW - MICE as laboratory animals KW - aeromedical evacuation KW - hypobaric KW - hypoxia KW - inflammation KW - neuroinflammation KW - traumatic brain injury N1 - Accession Number: 55820607; Goodman, Michael D. 1; Email Address: goodmamd@uc.edu Makley, Amy T. 1 Huber, Nathan L. 1 Clarke, Callisia N. 1 Friend, Lou Ann W. 1 Schuster, Rebecca M. 1 Bailey, Stephanie R. 1 Barnes, Stephen L. 2 Dorlac, Warren C. 1,3 Johannigman, Jay A. 1 Lentsch, Alex B. 1 Pritts, Timothy A. 1; Affiliation: 1: Institute for Military Medicine, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio 2: Division of Acute Care Surgery, University of Missouri School of Medicine, Columbia, Missouri 3: Center for Sustainment of Trauma and Readiness Skills– Cincinnati, United States Air Force Medical Corps; Source Info: Jan2011, Vol. 165 Issue 1, p30; Subject Term: ANOXEMIA; Subject Term: BRAIN -- Wounds & injuries; Subject Term: DISEASE exacerbation; Subject Term: BLOOD analysis; Subject Term: MATHEMATICAL optimization; Subject Term: CYTOKINES; Subject Term: BIOCHEMICAL markers; Subject Term: MICE as laboratory animals; Author-Supplied Keyword: aeromedical evacuation; Author-Supplied Keyword: hypobaric; Author-Supplied Keyword: hypoxia; Author-Supplied Keyword: inflammation; Author-Supplied Keyword: neuroinflammation; Author-Supplied Keyword: traumatic brain injury; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jss.2010.05.055 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55820607&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Goolsby, Jesse T1 - Resurrecting a Body Half. JO - Literary Review JF - Literary Review Y1 - 2011///Winter2011 VL - 54 IS - 2 M3 - Short Story SP - 130 EP - 137 PB - Fairleigh Dickinson University SN - 00244589 AB - Presents the short story "Resurrecting a Body Half," by Jesse Goolsby. KW - GOOLSBY, Jesse KW - RESURRECTING a Body Half (Short story) N1 - Accession Number: 58651850; Goolsby, Jesse 1; Affiliation: 1: United States Air Force Academy; Source Info: Winter2011, Vol. 54 Issue 2, p130; Reviews & Products: RESURRECTING a Body Half (Short story); People: GOOLSBY, Jesse; Number of Pages: 8p; Document Type: Short Story UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58651850&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sanghera, Jas AU - Bayya, Shyam AU - Villalobos, Guillermo AU - Kim, Woohong AU - Frantz, Jesse AU - Shaw, Brandon AU - Sadowski, Bryan AU - Miklos, R. AU - Baker, Colin AU - Hunt, Michael AU - Aggarwal, Ishwar AU - Kung, Fred AU - Reicher, David AU - Peplinski, Stan AU - Ogloza, Al AU - Langston, Peter AU - Lamar, Chuck AU - Varmette, Peter AU - Dubinskiy, Mark AU - DeSandre, Lewis T1 - Transparent ceramics for high-energy laser systems JO - Optical Materials JF - Optical Materials Y1 - 2011/01// VL - 33 IS - 3 M3 - Article SP - 511 EP - 518 SN - 09253467 AB - Abstract: We demonstrate that transparent magnesium aluminate spinel ceramic possesses excellent thermo-optical properties, a record low absorption loss of 6ppm/cm, and superior ruggedness which position it as a prime candidate for an exit window aperture for high energy laser systems, especially in hostile environments. We also demonstrate lasing with an efficiency of about 45% in transparent Yb3+:Y2O3 ceramic made by hot pressing high purity submicron co-precipitated powder. This paves the way forward for high power solid state lasers exploiting hosts with higher thermal conductivity than YAG. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSPARENCY (Optics) KW - CERAMIC materials KW - LASER beams KW - ALUMINATES KW - OPTICAL losses KW - PRECIPITATION (Chemistry) KW - SOLID-state lasers KW - THERMAL conductivity KW - Laser ceramics KW - Spinel KW - Transparent ceramics N1 - Accession Number: 57077025; Sanghera, Jas 1; Email Address: jasbinder.sanghera@nrl.navy.mil Bayya, Shyam 1 Villalobos, Guillermo 1 Kim, Woohong 1 Frantz, Jesse 1 Shaw, Brandon 1 Sadowski, Bryan 2 Miklos, R. 2 Baker, Colin 1 Hunt, Michael 3 Aggarwal, Ishwar 1 Kung, Fred 2 Reicher, David 4 Peplinski, Stan 4 Ogloza, Al 5 Langston, Peter 5 Lamar, Chuck 6 Varmette, Peter 7 Dubinskiy, Mark 8 DeSandre, Lewis 9; Affiliation: 1: US Naval Research Laboratory, Washington, DC 20375, United States 2: GTEC Inc., Crofton, MD 21114, United States 3: University Research Foundation, Greenbelt, MD 20770, United States 4: US Air Force Research Laboratory, Kirtland AFB, NM 87117, United States 5: NAWC, China Lake, CA 93555, United States 6: US Army Space & Missile Defense Command, Huntsville, AL 35807, United States 7: SAIC, Huntsville, AL 35806, United States 8: US Army Research Laboratory, Adelphi, MD, United States 9: ONR Global, London, UK; Source Info: Jan2011, Vol. 33 Issue 3, p511; Subject Term: TRANSPARENCY (Optics); Subject Term: CERAMIC materials; Subject Term: LASER beams; Subject Term: ALUMINATES; Subject Term: OPTICAL losses; Subject Term: PRECIPITATION (Chemistry); Subject Term: SOLID-state lasers; Subject Term: THERMAL conductivity; Author-Supplied Keyword: Laser ceramics; Author-Supplied Keyword: Spinel; Author-Supplied Keyword: Transparent ceramics; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.optmat.2010.10.038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57077025&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Josyula, Eswar AU - Vedula, Prakash AU - Bailey, William F. AU - Suchyta, Casimir J. T1 - Kinetic solution of the structure of a shock wave in a nonreactive gas mixture. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2011/01// VL - 23 IS - 1 M3 - Article SP - 017101 PB - American Institute of Physics SN - 10706631 AB - The multispecies Boltzmann equation is numerically integrated to characterize the internal structure of a Mach 3 shock wave in a hard sphere gas. The collision integral is evaluated by the conservative discrete ordinate method [F. G. Tcheremissine, Comput. Math. Math. Phys. 46, 315 (2006)]. There was excellent agreement of macroscopic variables [Kosuge et al.., Eur. J. Mech. B/Fluids 20, 87 (2001)]. The effect of species concentration and mass ratio on the behavior of macroscopic variables and distribution functions in the structure of the shock wave is considered for both two- and three-species gas mixtures. In a binary mixture of gases with different masses and varying concentrations, the temperature overshoot of the parallel component of temperature near the center of the shock wave is highest for the heavy component when the concentration of the heavy component is the smallest. The rise in the parallel component of temperature is revealed by the behavior of the distribution function. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHOCK waves KW - GASES KW - MIXTURES KW - NUMERICAL integration KW - TRANSPORT theory (Mathematics) -- Discrete ordinates method KW - COLLISION integrals KW - DISTRIBUTION (Probability theory) KW - TEMPERATURE effect N1 - Accession Number: 57679330; Josyula, Eswar 1 Vedula, Prakash 2 Bailey, William F. 3 Suchyta, Casimir J. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7512, 2: Ohio Aerospace Institute, AFRL/RBAT, Wright-Patterson AFB, Ohio 45433-7512, 3: Department of Physics, Air Force Institute of Technology, Wright-Patterson AFB, Ohio 45433-7765,; Source Info: Jan2011, Vol. 23 Issue 1, p017101; Subject Term: SHOCK waves; Subject Term: GASES; Subject Term: MIXTURES; Subject Term: NUMERICAL integration; Subject Term: TRANSPORT theory (Mathematics) -- Discrete ordinates method; Subject Term: COLLISION integrals; Subject Term: DISTRIBUTION (Probability theory); Subject Term: TEMPERATURE effect; Number of Pages: 9p; Document Type: Article L3 - 10.1063/1.3541815 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57679330&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ibey, Bennett L. AU - Roth, Caleb C. AU - Pakhomov, Andrei G. AU - Bernhard, Joshua A. AU - Wilmink, Gerald J. AU - Pakhomova, Olga N. T1 - Dose-Dependent Thresholds of 10-ns Electric Pulse Induced Plasma Membrane Disruption and Cytotoxicity. JO - PLoS ONE JF - PLoS ONE Y1 - 2011/01// VL - 6 IS - 1 M3 - Article SP - 1 EP - 11 PB - Public Library of Science SN - 19326203 AB - In this study, we determined the LD50 (50% lethal dose) for cell death, and the ED50 (50% of cell population staining positive) for propidium (Pr) iodide uptake, and phosphatidylserine (PS) externalization for several commonly studied cell lines (HeLa, Jurkat, U937, CHO-K1, and GH3) exposed to 10-ns electric pulses (EP). We found that the LD50 varied substantially across the cell lines studied, increasing from 51 J/g for Jurkat to 1861 J/g for HeLa. PS externalized at doses equal or lower than that required for death in all cell lines ranging from 51 J/g in Jurkat, to 199 J/g in CHO-K1. Pr uptake occurred at doses lower than required for death in three of the cell lines: 656 J/g for CHO-K1, 634 J/g for HeLa, and 142 J/g for GH3. Both Jurkat and U937 had a LD50 lower than the ED50 for Pr uptake at 780 J/g and 1274 J/g, respectively. The mechanism responsible for these differences was explored by evaluating cell size, calcium concentration in the exposure medium, and effect of trypsin treatment prior to exposure. None of the studied parameters correlated with the observed results suggesting that cellular susceptibility to injury and death by 10-ns EP was largely determined by cell physiology. In contrast to previous studies, our findings suggest that permeabilization of internal membranes may not necessarily be responsible for cell death by 10-ns EP. Additionally, a mixture of Jurkat and HeLa cells was exposed to 10-ns EP at a dose of 280 J/g. Death was observed only in Jurkat cells suggesting that 10-ns EP may selectively kill cells within a heterogeneous tissue. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOSPHATIDYLSERINES KW - CELL lines KW - CELL culture KW - CELL membranes KW - CELL physiology KW - CANCER cells KW - DIGESTIVE enzymes KW - CLONE cells KW - CELL-mediated cytotoxicity N1 - Accession Number: 59387821; Ibey, Bennett L. 1; Email Address: Bennett.Ibey@brooks.af.mil Roth, Caleb C. 2 Pakhomov, Andrei G. 3 Bernhard, Joshua A. 1 Wilmink, Gerald J. 1 Pakhomova, Olga N. 3; Affiliation: 1: 711th Human Performance Wing, Radio Frequency Radiation Branch, Air Force Research Laboratory, Brooks City-Base, San Antonio, Texas, United States of America. 2: General Dynamics Information Technology, Brooks City-Base, San Antonio, Texas, United States of America. 3: Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, Virginia, United States of America.; Source Info: 2011, Vol. 6 Issue 1, p1; Subject Term: PHOSPHATIDYLSERINES; Subject Term: CELL lines; Subject Term: CELL culture; Subject Term: CELL membranes; Subject Term: CELL physiology; Subject Term: CANCER cells; Subject Term: DIGESTIVE enzymes; Subject Term: CLONE cells; Subject Term: CELL-mediated cytotoxicity; Number of Pages: 11p; Document Type: Article L3 - 10.1371/journal.pone.0015642 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59387821&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morgan, Alexander B. AU - Putthanarat, Sirina T1 - Use of inorganic materials to enhance thermal stability and flammability behavior of a polyimide JO - Polymer Degradation & Stability JF - Polymer Degradation & Stability Y1 - 2011/01// VL - 96 IS - 1 M3 - Article SP - 23 EP - 32 SN - 01413910 AB - Abstract: While a great variety of high temperature polyimide materials exist, these materials are being subjected to higher and higher use temperatures in oxidative and environmentally aggressive environments. There is a limit to the extent one can take a polyimide before it will oxidize and subsequently suffer property degradation, thermal decomposition, and structural failure. Therefore, we instead sought to use materials which do not oxidize (inorganic materials) to enhance the polyimide composition and perhaps move the properties of the organic polymer more into the realm of ceramics while maintaining polyimide composite weights and processing advantages. In this paper we present results of the combination of inorganic micron sized particles with and without carbon nanofibers to produce a variety of highly inorganic particle filled polyimides. These polyimides were tested for thermal stability and flammability in resin pellet form and as a protective coating for a carbon–fiber composite structure. Our results demonstrate that the resin with inorganic particles exhibited significant reductions in flammability by themselves, but minimal flammability reduction when used as a thin coating to protect a carbon–fiber composite. Further, the gains in thermal stability are limited by the thermal stability of the polyimide matrix, suggesting that more work is needed in measuring the limits of inorganic fillers to improve thermal stability. Still, the results are promising and may yield polyimide systems useful for providing resistance to damage from high heat flux exposures/fire risk scenarios. [ABSTRACT FROM AUTHOR] AB - Copyright of Polymer Degradation & Stability is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INORGANIC compounds KW - THERMAL analysis KW - FLAMMABILITY KW - POLYIMIDES KW - HIGH temperatures KW - OXIDATION KW - DECOMPOSITION (Chemistry) KW - CERAMIC materials KW - NANOPARTICLES KW - Flammability KW - Inorganic nanoparticles KW - Polyimides KW - Thermal decomposition N1 - Accession Number: 56498347; Morgan, Alexander B. 1; Email Address: alexander.morgan@udri.udayton.edu Putthanarat, Sirina 1,2; Affiliation: 1: Multiscale Composites and Polymers Division, University of Dayton Research Institute, Dayton, OH 45469, USA 2: Air Force Research Laboratory, AFRL/RXBC, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Jan2011, Vol. 96 Issue 1, p23; Subject Term: INORGANIC compounds; Subject Term: THERMAL analysis; Subject Term: FLAMMABILITY; Subject Term: POLYIMIDES; Subject Term: HIGH temperatures; Subject Term: OXIDATION; Subject Term: DECOMPOSITION (Chemistry); Subject Term: CERAMIC materials; Subject Term: NANOPARTICLES; Author-Supplied Keyword: Flammability; Author-Supplied Keyword: Inorganic nanoparticles; Author-Supplied Keyword: Polyimides; Author-Supplied Keyword: Thermal decomposition; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.polymdegradstab.2010.11.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=56498347&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Billock, Vincent A. AU - Tsou, Brian H. T1 - To Honor Fechner and Obey Stevens: Relationships Between Psychophysical and Neural Nonlinearities. JO - Psychological Bulletin JF - Psychological Bulletin Y1 - 2011/01// VL - 137 IS - 1 M3 - Article SP - 1 EP - 18 SN - 00332909 AB - G. T. Fechner (1860/1966) famously described two kinds of psychophysics: Outer psychophysics captures the black box relationship between sensory inputs and perceptual magnitudes, whereas inner psychophysics contains the neural transformations that Fechner's outer psychophysics elided. The relationship between the two has never been clear. Moreover, psychophysical power laws are found in almost every sensory system, yet the vast majority of neurons show sigmoid nonlinearities. Here, we selectively review the literatures on psychophysical and physiological nonlinearities and show how they can be placed within a framework for understanding the relationship between inner and Outer psychophysics: a neural organization with a logical structure commensurate to outer psychophysical theory. In theoretical treatments of Stevens's law, the power law is a consequence of combining a Weber's law scaling of inputs with a Weber's law-like scaling of sensation magnitudes, yielding an exponent that is the ratio of the Weber constants. A neural derivation using physiological sigmoid nonlinearities should be commensurate to this internal logic. There is a class of models in which two nonlinear neural mechanisms (e.g., a sensory channel and the cortical numerosity mechanism tapped by magnitude estimation) are coupled through feedback, yielding power law behavior as an emergent property of the system, with an exponent that is a ratio of neural coupling strengths. Rather than a discrepancy between psychophysics and physiology, these models suggest complementarity between inner and outer psychophysics, because the Weber constants required for Outer psychophysics modeling can be derived from the sigmoid nonlincarities of inner psychophysics. [ABSTRACT FROM AUTHOR] AB - Copyright of Psychological Bulletin is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PSYCHOPHYSICS KW - PSYCHOPHYSIOLOGY KW - WEBER-Fechner law KW - NERVOUS system KW - NEUROSCIENCES KW - inner and outer psychophysics KW - MacKay model KW - Naka-Rushton neural nonlinearity KW - psychophysical power law KW - Weber's law N1 - Accession Number: 57799262; Billock, Vincent A. 1; Email Address: vincent.billock.ctr@wpafb.af.mil Tsou, Brian H. 2; Affiliation: 1: National Research Council, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio. 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio.; Source Info: Jan2011, Vol. 137 Issue 1, p1; Subject Term: PSYCHOPHYSICS; Subject Term: PSYCHOPHYSIOLOGY; Subject Term: WEBER-Fechner law; Subject Term: NERVOUS system; Subject Term: NEUROSCIENCES; Author-Supplied Keyword: inner and outer psychophysics; Author-Supplied Keyword: MacKay model; Author-Supplied Keyword: Naka-Rushton neural nonlinearity; Author-Supplied Keyword: psychophysical power law; Author-Supplied Keyword: Weber's law; Number of Pages: 18p; Document Type: Article L3 - 10.1037/a0021394 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57799262&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McKissock, John AU - Mines, Pete AU - Sweet, Mark B. AU - Klyn, Steven L. T1 - Ten-Month In Vitro Leakage Study Single-Cone Obturation System. JO - U.S. Army Medical Department Journal JF - U.S. Army Medical Department Journal Y1 - 2011/01//Jan-Mar2011 M3 - Article SP - 42 EP - 47 SN - 15240436 AB - The purpose of this study was to compare the in vitro sealing ability of the continuous wave of condensation technique using gutta-percha and an epoxy resin based sealer, AH Plus to the sealing ability of the single-cone, glassionomerbased Activ GP Precision Obturation System over 10 months. Fifty maxillary anterior teeth were randomly divided into 2 test groups (20 canals each) and 2 control groups (5 positive and 5 negative). All teeth were stored in 0.9% saline. Group 1 (GP) was prepared with rotary instruments and obturated with the continuous wave of condensation technique using gutta-percha and AH Plus sealer. Group 2 (Activ GP) was prepared with rotary instruments and obturated using the heatless, single-cone, glass-ionomer-based Activ GP Precision Obturation System. Each canal orifice was sealed with amalgam and stored for 10 months in 100% humidity at 37엯C. Amalgam was removed and leakage was evaluated by fluid transport at 10 psi. The median leakage for Group 1 (GP) was 0.500 mm and Group 2 (Activ GP) was 18.865 mm. A Mann-Whitney Rank Sum test was used to evaluate the data and determine if a difference existed between the 2 groups. Under the conditions of this study, the Activ GP glass-ionomerbased single-cone obturation technique demonstrated statistically significant higher leakage rates than a continuous wave of condensation technique. [ABSTRACT FROM AUTHOR] AB - Copyright of U.S. Army Medical Department Journal is the property of U.S. Army Medical Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GUTTA-percha KW - EPOXY resins KW - INCISORS KW - CONDENSATION KW - AMALGAMS (Alloys) KW - DENTAL adhesives N1 - Accession Number: 69986970; McKissock, John 1 Mines, Pete 2 Sweet, Mark B. 3 Klyn, Steven L. 4; Affiliation: 1: Chief, Endodontic Services, US Army Dental Activity, Officer Charge, Smith Dental Clinic, Fort Carson, Colorado 2: Chief, Endodontic Services, US Army Dental Activity, Officer Charge, Rohde Dental Clinic, Fort Bragg, North Carolina 3: Commander, Vicenza Dental Clinic Command, US Army Garrison, Vicenza, Italy 4: Chief of Endodontics, 10th Dental Squadron, United States Air Force Academy, Colorado; Source Info: Jan-Mar2011, p42; Subject Term: GUTTA-percha; Subject Term: EPOXY resins; Subject Term: INCISORS; Subject Term: CONDENSATION; Subject Term: AMALGAMS (Alloys); Subject Term: DENTAL adhesives; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; Number of Pages: 6p; Illustrations: 2 Color Photographs, 1 Diagram; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=69986970&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mathews, Manoj AU - Zola, Rafael S. AU - Hurley, Shawn AU - Deng-Ke Yang AU - White, Timothy J. AU - Bunning, Timothy J. AU - Quan Li T1 - Light-Driven Reversible Handedness Inversion in Self-Organized Helical Superstructures. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2010/12/29/ VL - 132 IS - 51 M3 - Article SP - 18361 EP - 18366 SN - 00027863 AB - We report here a fast-photon-mode reversible handedness inversion of a self-organized helical superstructure (i.e., a cholesteric liquid crystal phase) using photoisomerizable chiral cyclic dopants. The two light-driven cyclic azobenzenophanes with axial chirality show photochemically reversible trans to cis isomerization in solution without undergoing thermal or photoinduced racemization. As chiral inducing agents, they exhibit good solubility, high helical twisting power, and a large change in helical twisting power due to photoisomerization in three commercially available, structurally different achiral liquid crystal hosts. Therefore, we were able to reversibly tune the reflection colors from blue to near-IR by light irradiation from the induced helical superstructure. More interestingly, the different switching states of the two chiral cyclic dopants were found to be able to induce a helical superstructure of opposite handedness. In order to unambiguously determine the helical switching, we employed a new method that allowed us to directly determine the handedness of the long-pitched self-organized cholesteric phase. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HANDEDNESS KW - RESEARCH KW - CHIRALITY KW - ISOMERIZATION KW - RACEMIZATION KW - LIQUID crystals N1 - Accession Number: 57383263; Mathews, Manoj 1 Zola, Rafael S. 1 Hurley, Shawn 1 Deng-Ke Yang 1 White, Timothy J. 2 Bunning, Timothy J. 2 Quan Li 1; Email Address: qli1@kent.edu; Affiliation: 1: Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, Kent, Ohio 44242, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433, United States; Source Info: 12/29/2010, Vol. 132 Issue 51, p18361; Subject Term: HANDEDNESS; Subject Term: RESEARCH; Subject Term: CHIRALITY; Subject Term: ISOMERIZATION; Subject Term: RACEMIZATION; Subject Term: LIQUID crystals; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57383263&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jones, W. A. AU - Barnes, P. N. AU - Mullins, M. J. AU - Baca, F. J. AU - Emergo, R. L. S. AU - Wu, J. AU - Haugan, T. J. AU - Clem, J. R. T1 - Impact of edge-barrier pinning in superconducting thin films. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/12/27/ VL - 97 IS - 26 M3 - Article SP - 262503 PB - American Institute of Physics SN - 00036951 AB - It has been suggested that edge-barrier pinning might cause the critical current density (Jc) in bridged superconducting films to increase. Subsequent work indicated that this edge-barrier effect does not impact bridges larger than 1 μm. However, we provide a theoretical assessment with supporting experimental data suggesting edge-barrier pinning can significantly enhance Jc for bridges of a few microns or even tens of microns thus skewing any comparisons among institutions. As such, when reporting flux pinning and superconductor processing improvements for Jc comparisons, the width of the sample has to be taken into consideration as is currently done with film thickness. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR films KW - FLUX pinning KW - CRITICAL currents KW - THICKNESS measurement KW - SUPERCONDUCTIVITY KW - EXPERIMENTAL design N1 - Accession Number: 56910426; Jones, W. A. 1,2 Barnes, P. N. 2 Mullins, M. J. 1,2 Baca, F. J. 2,3 Emergo, R. L. S. 4 Wu, J. 4 Haugan, T. J. 2 Clem, J. R. 5; Affiliation: 1: University of Dayton, Dayton, Ohio 45469, 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7919, 3: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, 4: Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, 5: Department of Physics and Astronomy and Ames Laboratory, Iowa State University, Ames, Iowa 50011-3160,; Source Info: 12/27/2010, Vol. 97 Issue 26, p262503; Subject Term: SEMICONDUCTOR films; Subject Term: FLUX pinning; Subject Term: CRITICAL currents; Subject Term: THICKNESS measurement; Subject Term: SUPERCONDUCTIVITY; Subject Term: EXPERIMENTAL design; Number of Pages: 3p; Document Type: Article L3 - 10.1063/1.3529945 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=56910426&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Hazari, Nilay AU - Luzik, Eddie D. AU - Viggiano, A. A. T1 - Kinetics following addition of sulfur fluorides to a weakly ionized plasma from 300 to 500 K: Rate constants and product determinations for ion-ion mutual neutralization and thermal electron attachment to SF5, SF3, and SF2-. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2010/12/21/ VL - 133 IS - 23 M3 - Article SP - 234304 PB - American Institute of Physics SN - 00219606 AB - Rate constants for several processes including electron attachment to SF2, SF3, and SF5 and individual product channels of ion-ion mutual neutralization between SF6-, SF5-, and SF4- with Ar+ were determined by variable electron and neutral density attachment mass spectrometry. The experiments were conducted with a series of related neutral precursors (SF6, SF4, SF5Cl, SF5C6H5, and SF3C6F5) over a temperature range of 300-500 K. Mutual neutralization rate constants for SF6-, SF5-, and SF4- with Ar+ are reported with uncertainties of 10-25% and show temperature dependencies in agreement with the theoretical value of T-0.5. Product branching in the mutual neutralizations is temperature independent and dependent on the electron binding energy of the anion. A larger fraction of product neutrals from the SF6- mutual neutralization (0.9 ±0.1) are dissociated than in the SF5- mutual neutralization (0.65 ± 0.2), with the SF4- (0.7 ± 0.3) likely lying in between. Electron attachment to SF5 (k = 2.0 × 10-8 ± 2/1 cm3 s-1 at 300 K) and SF3 (4 ± 3 × 10-9 cm3 s-1 at 300 K) show little temperature dependence. Rate constants of electron attachment to closed-shell SFn species decrease as the complexity of the neutral decreases. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUORIDES KW - PLASMA (Ionized gases) KW - NEUTRALIZATION (Chemistry) KW - THERMAL electrons KW - MASS spectrometry KW - BINDING energy KW - ELECTRON distribution N1 - Accession Number: 56511023; Shuman, Nicholas S. 1 Miller, Thomas M. 1 Hazari, Nilay 2 Luzik, Eddie D. 2,3 Viggiano, A. A. 1; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731-3010, 2: Department of Chemistry, Yale University, New Haven, Connecticut 06520, 3: Department of Chemistry, University of New Haven, New Haven, Connecticut 06516,; Source Info: 12/21/2010, Vol. 133 Issue 23, p234304; Subject Term: FLUORIDES; Subject Term: PLASMA (Ionized gases); Subject Term: NEUTRALIZATION (Chemistry); Subject Term: THERMAL electrons; Subject Term: MASS spectrometry; Subject Term: BINDING energy; Subject Term: ELECTRON distribution; Number of Pages: 11p; Illustrations: 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1063/1.3520150 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=56511023&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Trohalaki, Steven AU - Pachter, Ruth T1 - The effects of the dimethylether bridging moiety in the H-cluster of the Clostridium pasteurianum hydrogenase on the mechanism of H2 production: A quantum mechanics/molecular mechanics study JO - International Journal of Hydrogen Energy JF - International Journal of Hydrogen Energy Y1 - 2010/12/15/ VL - 35 IS - 24 M3 - Article SP - 13179 EP - 13185 SN - 03603199 AB - Abstract: [Fe–Fe]-hydrogenases are naturally occurring metalloenzymes that catalyze the reversible production of H2 from two protons and two electrons. [Fe–Fe]-hydrogenases found in two species –Clostridium pasteurianum (CpI) and Desulfovibrio desulfuricans (DdH) – were shown with x-ray crystallography to have active sites that are very similar, although several atoms that bridge the dithiolate ligand were unresolved. In earlier work, we employed density functional theory (DFT) within a QM/MM method to investigate two previously proposed mechanisms of hydrogen production by DdH and CpI hydrogenases. In one mechanism (I), a CO ligand bridging two Fe atoms in the active site rotates to a terminal position while in the other (II) the CO bridge remains intact throughout the catalytic cycle. We previously assumed that the active sites for the two hydrogenases were identical; each had a dimethylamine bridging moiety, whose basicity is important for Mechanism II. Our overall conclusion, taking into consideration an energy comparison for the two mechanisms and activation energies for the CO-unbridging step in Mechanism I, was that Mechanism II was favored for both hydrogenases. In this paper, we extend our previous work to show that Mechanism II is favored over Mechanism I even if the bridging moiety in CpI hydrogenase is dimethylether, a significantly weaker base than dimethylamine, providing further support for Mechanism II even though experimental verification of the bridging moiety for the CpI H-cluster is lacking. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROGENASE KW - HYDROGEN production KW - ETHER (Anesthetic) KW - CLOSTRIDIUM pasteurianum KW - QUANTUM theory KW - METALLOENZYMES KW - CATALYSIS KW - PROTONS KW - ELECTRONS KW - X-ray crystallography KW - MOLECULAR dynamics KW - All-iron hydrogenase KW - Dimethyletherdithiolate KW - Hydrogen production KW - Hydrogenase mechanism KW - QM/MM N1 - Accession Number: 54915580; Trohalaki, Steven 1,2; Email Address: steven.trohalaki@wpafb.af.mil Pachter, Ruth 1; Email Address: ruth.pachter@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: General Dynamics Information Technology, Inc., USA; Source Info: Dec2010, Vol. 35 Issue 24, p13179; Subject Term: HYDROGENASE; Subject Term: HYDROGEN production; Subject Term: ETHER (Anesthetic); Subject Term: CLOSTRIDIUM pasteurianum; Subject Term: QUANTUM theory; Subject Term: METALLOENZYMES; Subject Term: CATALYSIS; Subject Term: PROTONS; Subject Term: ELECTRONS; Subject Term: X-ray crystallography; Subject Term: MOLECULAR dynamics; Author-Supplied Keyword: All-iron hydrogenase; Author-Supplied Keyword: Dimethyletherdithiolate; Author-Supplied Keyword: Hydrogen production; Author-Supplied Keyword: Hydrogenase mechanism; Author-Supplied Keyword: QM/MM; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijhydene.2010.08.095 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54915580&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Siefert, Nicholas S. T1 - Electrical double layers at shock fronts in glow discharges and afterglows. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/12/15/ VL - 108 IS - 12 M3 - Article SP - 123304 PB - American Institute of Physics SN - 00218979 AB - This paper examines the propagation of spark-generated shockwaves (1.010000 cycles with low-friction and wear at room temperature (RT) in ambient air. The mechanisms behind this behavior are not completely understood. Tribological tests performed at RT and at different relative humidity (RH) levels revealed that a minimum value between 15 and 25% RH is needed to trigger the low-friction regime at a sliding speed of 100 mm s. By in situ observations of transfer film growth, it could be observed that third body material is formed during this running-in period by plowing of the coating and shearing of the removed material. The appearance and thickening of the transfer film marks the beginning of the steady-state low-friction regime where the velocity is accommodated by interfacial sliding. At this stage in the tribological test, the recorded Raman spectra indicated the presence of C-H bonds in the wear track. Use of in situ analytical tools during wear tests provided insights with respect to tribological phenomena that were not available by conventional, post-mortem analysis methods. [ABSTRACT FROM AUTHOR] AB - Copyright of Tribology Letters is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM compounds KW - METAL coating KW - TRIBOLOGY KW - FRICTION KW - THIN films KW - SHEAR (Mechanics) KW - RAMAN effect KW - In situ tribometry KW - Low-friction KW - TiCN KW - Tribofilm N1 - Accession Number: 55387794; Rebelo de Figueiredo, M. 1; Email Address: marisa.figueiredo@unileoben.ac.at Muratore, C. 2 Franz, R. 1 Chromik, R. 3 Wahl, K. 4 Voevodin, A. 2 O'Sullivan, M. 5 Lechthaler, M. 6 Mitterer, C. 1; Affiliation: 1: Christian Doppler Laboratory for Advanced Hard Coatings, Department of Physical Metallurgy and Materials Testing, University of Leoben, Franz-Josef-Strasse 18 8700 Leoben Austria 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base 45433-7750 USA 3: Department of Mining and Materials Engineering, McGill University, 3610 University Street Montreal Canada 4: Chemistry Division, Molecular Interfaces and Tribology Section, Code 6176, U.S. Naval Research Laboratory, Washington 20375-5342 USA 5: PLANSEE Composite Materials GmbH, Siebenbürgerstrasse 23 86983 Lechbruck am See Germany 6: OC Oerlikon Balzers AG, Iramali 18 FL-9496 Balzers Principality of Liechtenstein; Source Info: Dec2010, Vol. 40 Issue 3, p365; Subject Term: TITANIUM compounds; Subject Term: METAL coating; Subject Term: TRIBOLOGY; Subject Term: FRICTION; Subject Term: THIN films; Subject Term: SHEAR (Mechanics); Subject Term: RAMAN effect; Author-Supplied Keyword: In situ tribometry; Author-Supplied Keyword: Low-friction; Author-Supplied Keyword: TiCN; Author-Supplied Keyword: Tribofilm; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 9p; Document Type: Article L3 - 10.1007/s11249-010-9664-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55387794&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gengler, Jamie J. AU - Muratore, Christopher AU - Roy, Ajit K. AU - Hu, Jianjun AU - Voevodin, Andrey A. AU - Roy, Sukesh AU - Gord, James R. T1 - Yttria-stabilized zirconia-based composites with adaptive thermal conductivity JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2010/11/30/ VL - 70 IS - 14 M3 - Article SP - 2117 EP - 2122 SN - 02663538 AB - Abstract: Thermal conductivity trends in a “chameleon coating” thin film were characterized with a time-domain thermoreflectance (TDTR) technique. A yttria-stabilized zirconia (YSZ)-based nanocomposite material containing ∼21vol.% silver (Ag) was employed for this study. The thermal conductivity (k) of the as-deposited composite film was measured with TDTR and found to have a value of 7.4±1.4Wm−1 K−1. The film was then annealed at 500°C for 1h to stimulate Ag flow from within the composite to the surface via diffusion. The Ag that coalesced on the surface during annealing was removed to expose the underlying porous YSZ matrix, and the sample was reexamined with the TDTR technique. The thermal conductivity of the porous nanocomposite YSZ material was then measured to be 1.6±0.2Wm−1 K−1, which is significantly lower than a fully dense control sample of pure nanocrystalline YSZ (2.0±0.1Wm−1 K−1). The annealed film displayed a 20% reduction in thermal conductivity as compared to the control sample and a 4–5-fold reduction in thermal conductivity as compared to the as-deposited material. The experiments demonstrate temperature triggering of a composite material, resulting in self-modifying thermal conductivity and diffusion-controlled porosity. These aspects can be used to enhance or restrict thermal transport (i.e., a thermal switch). The applicability of the TDTR technique to measurements of thin, nanoporous film materials is also demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - YTTRIUM KW - ZIRCONIUM oxide KW - COMPOSITE materials KW - THERMAL conductivity KW - THIN films KW - COATING processes KW - REFLECTANCE KW - A. Nanocomposites KW - B. Porosity/voids KW - B. Thermal properties N1 - Accession Number: 53971252; Gengler, Jamie J. 1,2; Email Address: jamie.gengler.ctr@wpafb.af.mil Muratore, Christopher 1 Roy, Ajit K. 1 Hu, Jianjun 1 Voevodin, Andrey A. 1 Roy, Sukesh 2,3 Gord, James R. 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Thermal Sciences and Materials Branch, 2941 Hobson Way, Wright-Patterson Air Force Base, OH 45433, USA 2: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, OH 45431, USA 3: Air Force Research Laboratory, Propulsion Directorate, Combustion Branch, 1950 Fifth Street, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Nov2010, Vol. 70 Issue 14, p2117; Subject Term: YTTRIUM; Subject Term: ZIRCONIUM oxide; Subject Term: COMPOSITE materials; Subject Term: THERMAL conductivity; Subject Term: THIN films; Subject Term: COATING processes; Subject Term: REFLECTANCE; Author-Supplied Keyword: A. Nanocomposites; Author-Supplied Keyword: B. Porosity/voids; Author-Supplied Keyword: B. Thermal properties; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.compscitech.2010.08.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53971252&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tiley, J. AU - Viswanathan, G.B. AU - Hwang, J.Y. AU - Shiveley, A. AU - Banerjee, R. T1 - Evaluation of gamma prime volume fractions and lattice misfits in a nickel base superalloy using the external standard X-ray diffraction method JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2010/11/25/ VL - 528 IS - 1 M3 - Article SP - 32 EP - 36 SN - 09215093 AB - Abstract: The unconstrained lattice parameters and volume fractions of γ′ for a low misfit nickel based superalloy were evaluated using X-ray diffraction techniques. Extraction techniques were used to provide unconstrained γ′ powders for both water quenched and slow cooled samples that were aged at 760°C for 0, 25, 50, 100, and 200h. The external standard method was used to determine the volume fraction for the unaged water quenched sample and the slow cooled sample aged for 200h. These two extremes in processing conditions provided an increase in the total volume fraction of γ′. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAMMA rays KW - LATTICE dynamics KW - HEAT resistant alloys KW - NICKEL KW - X-ray diffraction KW - METALS -- Quenching KW - Gamma prime KW - Volume fraction N1 - Accession Number: 54607352; Tiley, J. 1; Email Address: tiley@earthlink.net Viswanathan, G.B. 1 Hwang, J.Y. 2 Shiveley, A. 1 Banerjee, R. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH, USA 2: Materials Engineering Department, University of North Texas, Denton, TX, USA; Source Info: Nov2010, Vol. 528 Issue 1, p32; Subject Term: GAMMA rays; Subject Term: LATTICE dynamics; Subject Term: HEAT resistant alloys; Subject Term: NICKEL; Subject Term: X-ray diffraction; Subject Term: METALS -- Quenching; Author-Supplied Keyword: Gamma prime; Author-Supplied Keyword: Volume fraction; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.msea.2010.07.036 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54607352&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yakovlev, Vladislav V. AU - Zhang, Hao F. AU - Noojin, Gary D. AU - Denton, Michael L. AU - Thomas, Robert J. AU - Scully, Marlan O. T1 - Stimulated Raman photoacoustic imaging. JO - Proceedings of the National Academy of Sciences of the United States of America JF - Proceedings of the National Academy of Sciences of the United States of America Y1 - 2010/11/23/ VL - 107 IS - 47 M3 - Article SP - 20335 EP - 20339 SN - 00278424 AB - Achieving label-free, molecular-specific imaging with high spatial resolution in deep tissue is often considered the grand challenge of optical imaging. To accomplish this goal, significant optical scattering in tissues has to be overcome while achieving molecular specificity without resorting to extrinsic labeling. We demonstrate the feasibility of developing such an optical imaging modality by combining the molecularly specific stimulated Raman excitation with the photoacoustic detection. By employing two ultrashort excitation laser pulses, separated in frequency by the vibrational frequency of a targeted molecule, only the specific vibrational level of the target molecules in the illuminated tissue volume is excited. This targeted optical absorption generates ultrasonic waves (referred to as stimulated Raman photoacoustic waves) which are detected using a traditional ultrasonic transducer to form an image following the design of the established photoacoustic microscopy. [ABSTRACT FROM AUTHOR] AB - Copyright of Proceedings of the National Academy of Sciences of the United States of America is the property of National Academy of Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TISSUES KW - RAMAN effect KW - ULTRASHORT laser pulses KW - PHOTOACOUSTIC spectroscopy KW - ULTRASONIC waves KW - biomedical imaging KW - microscopy KW - nonlinear optics KW - photoacoustics N1 - Accession Number: 58656768; Yakovlev, Vladislav V. 1; Email Address: yakolev@uwm.edu Zhang, Hao F. 2; Email Address: zhang25@uwm.edu Noojin, Gary D. 3 Denton, Michael L. 3 Thomas, Robert J. 4 Scully, Marlan O. 5,6; Email Address: scully@tamu.edu; Affiliation: 1: Department of Physics, University of Wisconsin. Milwaukee, WI 53201. 2: Department of Electrical Engineering and Computer Science, University of Wisconsin, Milwaukee, WI 53201. 3: Biomedical Sciences and Technologies Department, TASC, Inc., San Antonio, TX 78235. 4: U.S. Air Force Research Laboratory, 711th Human Performance Wing, Human Effectiveness Directorate, Directed Energy Bioeffects Division, Optical Radiation Branch, Brooks City-Base, TX 78235. 5: Department of Physics, Texas A and M University, College Station, TX 77840. 6: College of Applied Science and Engineering, Princeton University, Princeton, NJ 08544.; Source Info: 11/23/2010, Vol. 107 Issue 47, p20335; Subject Term: TISSUES; Subject Term: RAMAN effect; Subject Term: ULTRASHORT laser pulses; Subject Term: PHOTOACOUSTIC spectroscopy; Subject Term: ULTRASONIC waves; Author-Supplied Keyword: biomedical imaging; Author-Supplied Keyword: microscopy; Author-Supplied Keyword: nonlinear optics; Author-Supplied Keyword: photoacoustics; Number of Pages: 5p; Illustrations: 1 Color Photograph, 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1073/pnas.102432107 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58656768&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, Hao AU - Roy, Ajit AU - Baek, Jong-Beom AU - Zhu, Lin AU - Qu, Jia AU - Dai, Liming T1 - Controlled growth and modification of vertically-aligned carbon nanotubes for multifunctional applications JO - Materials Science & Engineering: R JF - Materials Science & Engineering: R Y1 - 2010/11/22/ VL - 70 IS - 3-6 M3 - Article SP - 63 EP - 91 SN - 0927796X AB - Abstract: Vertically-aligned carbon nanotubes possess many advantages for a wide range of multifunctional applications. Along with the controlled growth of aligned/micropatterned carbon nanotubes, surface modification of vertically-aligned carbon nanotubes are essential in order to meet specific requirements demanded for particular applications. While many innovative synthetic methods have been developed for controlled growth of vertically-aligned multiwalled and single-walled carbon nanotubes, various interesting physical and chemical approaches have recently been devised for functionalization of the constituent carbon nanotubes in vertically-aligned carbon nanotube arrays with their alignment being largely retained. In this article, recent developments in the controlled growth and modification of vertically-aligned carbon nanotubes for multifunctional applications are reviewed. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Science & Engineering: R is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - SURFACE chemistry KW - CHEMICAL engineering KW - PHYSICAL & theoretical chemistry KW - CHEMICAL reactions KW - NANOSTRUCTURED materials KW - Alignment KW - Application KW - Carbon nanotube KW - Functionalization KW - Patterning N1 - Accession Number: 55385974; Chen, Hao 1 Roy, Ajit 2 Baek, Jong-Beom 3 Zhu, Lin 4 Qu, Jia 1; Email Address: jqu@wzmc.edu.cn Dai, Liming 4; Email Address: liming.dai@case.edu; Affiliation: 1: Wenzhou Medical College, 270 Xueyuan Road, Wenzhou, Zhejiang 325027, China 2: Air Force Research Laboratory, AFRL/RX, Wright-Patterson AFB, OH 45433, USA 3: Interdisciplinary School of Green Energy and Institute of Advanced Materials and Chemicals, Ulsan National Institute of Science and Technology (UNIST), #100, Banyeon, Ulsan 689-798, Republic of Korea 4: Department of Chemical Engineering and Department of Macromolecular Science and Engineering, Case School of Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA; Source Info: Nov2010, Vol. 70 Issue 3-6, p63; Subject Term: CARBON nanotubes; Subject Term: SURFACE chemistry; Subject Term: CHEMICAL engineering; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: CHEMICAL reactions; Subject Term: NANOSTRUCTURED materials; Author-Supplied Keyword: Alignment; Author-Supplied Keyword: Application; Author-Supplied Keyword: Carbon nanotube; Author-Supplied Keyword: Functionalization; Author-Supplied Keyword: Patterning; Number of Pages: 29p; Document Type: Article L3 - 10.1016/j.mser.2010.06.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55385974&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shellhamer, Dale F. AU - Davenport, Kevyn J. AU - Hassler, Danielle M. AU - Hickle, Kelli R. AU - Thorpe, Jacob J. AU - Vandenbroek, David J. AU - Heasley, Victor L. AU - Boatz, Jerry A. AU - Reingold, Arnold L. AU - Moore, Curtis E. T1 - Reaction of Chlorosulfonyl Isocyanate with Fluorosubstituted Alkenes: Evidence of a Concerted Pathway. JO - Journal of Organic Chemistry JF - Journal of Organic Chemistry Y1 - 2010/11/19/ VL - 75 IS - 22 M3 - Article SP - 7913 EP - 7916 SN - 00223263 AB - Concerted reactions are indicated for the electrophilic addition of chlorosulfonyl isocyanate with monofluoro-alkenes. A vinyl fluorine atom on an alkene raises the energy of a stepwise transition state more than the energy of the competing concerted pathway. This energy shift induces CSI to react with monofluoroalkenes by a one- step process. The low reactivity of CSI with monofluoroalkenes, stereospecific reactions, the absence of 2:1 uracil products with neat fluoroalkenes, and quantum chemical calculations support a concerted pathway. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Organic Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL reactions KW - LIGHT elements KW - HETEROCYCLIC compounds KW - FLUORINE KW - ALKENES N1 - Accession Number: 56916473; Shellhamer, Dale F. 1; Email Address: dshellha@pointloma.edu Davenport, Kevyn J. 1 Hassler, Danielle M. 1 Hickle, Kelli R. 1 Thorpe, Jacob J. 1 Vandenbroek, David J. 1 Heasley, Victor L. 1 Boatz, Jerry A. 2 Reingold, Arnold L. 3 Moore, Curtis E. 3; Affiliation: 1: Department of Chemistry, Point Loma Nazarene University, San Diego, California 92106-2899, United States. 2: Air Force Research Laboratory, Edwards Air Force Base, California 93524-7680, United States. 3: Department of Chemistry and Biochemistry, University of California, 9500 Gilman Drive, La Jolla, California 92093-0358, United Slates.; Source Info: 11/19/2010, Vol. 75 Issue 22, p7913; Subject Term: CHEMICAL reactions; Subject Term: LIGHT elements; Subject Term: HETEROCYCLIC compounds; Subject Term: FLUORINE; Subject Term: ALKENES; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 4p; Illustrations: 4 Diagrams; Document Type: Article L3 - 10.1021/jo101240s UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=56916473&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kaspi, R. AU - Tilton, M. L. AU - Dente, G. C. AU - Barresi, R. AU - Yang, C. AU - Ongstad, A. P. T1 - Intersubband photoluminescence in InAs quantum wells. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/11/15/ VL - 97 IS - 20 M3 - Article SP - 201104 PB - American Institute of Physics SN - 00036951 AB - We conduct a study of photoluminescence in a series of InAs quantum wells with asymmetric barriers that are designed to generate emission from intersubband transitions near 4 μm wavelength. The results show that optical pumping of the barrier layers can be used to transfer carriers into the upper electron state in the InAs wells to produce photoluminescence. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOLUMINESCENCE KW - QUANTUM wells KW - INDIUM arsenide KW - ASYMMETRY (Chemistry) KW - FIELD emission KW - OPTICAL pumping KW - WAVELENGTHS N1 - Accession Number: 55330310; Kaspi, R. 1 Tilton, M. L. 1 Dente, G. C. 1 Barresi, R. 1 Yang, C. 1 Ongstad, A. P. 1; Affiliation: 1: Air Force Research Laboratory, AFRL/RDLAS, Albuquerque, New Mexico 87117,; Source Info: 11/15/2010, Vol. 97 Issue 20, p201104; Subject Term: PHOTOLUMINESCENCE; Subject Term: QUANTUM wells; Subject Term: INDIUM arsenide; Subject Term: ASYMMETRY (Chemistry); Subject Term: FIELD emission; Subject Term: OPTICAL pumping; Subject Term: WAVELENGTHS; Number of Pages: 3p; Document Type: Article L3 - 10.1063/1.3516041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55330310&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Louzguine-Luzgin, Dmitri V. AU - Miracle, Daniel B. AU - Louzguina-Luzgina, Larissa AU - Inoue, Akihisa T1 - Comparative analysis of glass-formation in binary, ternary, and multicomponent alloys. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/11/15/ VL - 108 IS - 10 M3 - Article SP - 103511 PB - American Institute of Physics SN - 00218979 AB - In the present work we analyze the composition ranges over which bulk metallic glasses (BMGs) are produced in ternary, quaternary, and quinary amorphous alloys. The maximum diameter of the sample over which an amorphous structure can be retained, referred to as the critical diameter, Dc, is consistently large over specific composition ranges. For ternary BMGs, these most stable glasses are centered around the compositions, in decreasing order of accompanying Dc: A44B38C18, A44B43C13, A65B25C10, A56B32C12, A55B28C17, A70B20C10, and A65B20C15. As a general trend, the most stable glasses have the lowest concentrations of solvent atoms. Structural analysis using the efficient cluster packing model suggests that the best ternary glasses are near the isostructural composition, which represents the maximum degree of atomic confusion. Both Dc and ΔTx=Tx-Tg, the difference between the crystallization and glass transition temperatures, are larger in quaternary and quinary systems relative to typical values for ternary BMGs. Glass-forming ability increases with complexity of the alloy, i.e., increasing number of alloying elements. The above results shed some light not only on compositional dependence of the formation of glassy phase but also its relation to the structure of the glasses. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC glasses KW - ATOMS KW - ALLOYS KW - CRYSTALLIZATION KW - TEMPERATURE N1 - Accession Number: 55509642; Louzguine-Luzgin, Dmitri V. 1; Email Address: dml@wpi-aimr.tohoku.ac.jp Miracle, Daniel B. 2 Louzguina-Luzgina, Larissa 1 Inoue, Akihisa 1; Affiliation: 1: WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, 2230 Tenth Street, Wright-Patterson AFB, Ohio 45433-7817, USA; Source Info: Nov2010, Vol. 108 Issue 10, p103511; Subject Term: METALLIC glasses; Subject Term: ATOMS; Subject Term: ALLOYS; Subject Term: CRYSTALLIZATION; Subject Term: TEMPERATURE; Number of Pages: 8p; Illustrations: 7 Graphs; Document Type: Article L3 - 10.1063/1.3506687 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55509642&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pierce, Christian J. AU - Palazotto, Anthony N. AU - Rosenberger, Andrew H. T1 - Creep and fatigue interaction in the PWA1484 single crystal nickel-base alloy JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2010/11/15/ VL - 527 IS - 29/30 M3 - Article SP - 7484 EP - 7489 SN - 09215093 AB - Abstract: While methods for modeling creep behavior of single crystal turbine airfoils are generally well developed, constant load creep does not fully represent the loading conditions present in a jet engine due to cyclic loading caused by the mission profile and throttle movements. As the aerospace industry seeks to become more accurate in physics-based modeling of materials that are used in turbine blades, creep–fatigue interaction must be incorporated into characterization of turbine blade materials. PWA1484, a second generation single crystal nickel-base superalloy that is used for turbine blades in many of today''s high performance jet engines was tested in a creep–fatigue environment that is meant to simulate some conditions of the service environment of a jet engine. This research explores the behavior and microstructural evolution of samples of PWA1484 tested in a creep–fatigue environment at 871°C in air. It was found that specimens subjected to prior fatigue loading exhibit a smaller region of primary creep that is proportional to the number of prior fatigue cycles, and an accelerated transition to a tertiary creep regime. However, specimens that are subject to a static load and allowed to creep to 2.5% creep strain exhibited an un-affected fatigue behavior. Post-test microstructural analysis revealed a coarsening of the gamma prime (γ′) precipitates that was dependent on loading condition and time spent at elevated temperature. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Creep KW - METAL crystals KW - NICKEL alloys KW - MATERIALS -- Fatigue KW - TURBINES -- Blades KW - MICROSTRUCTURE KW - TEMPERATURE effect KW - Creep KW - Fatigue KW - High temperature KW - Nickel-base superalloys KW - PWA1484 KW - Single crystal N1 - Accession Number: 54365783; Pierce, Christian J. 1,2; Email Address: Christian.Pierce@af.mil Palazotto, Anthony N. 3 Rosenberger, Andrew H. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLM, Wright-Patterson AFB, OH 45433, USA 2: Air Force Institute of Technology, Department of Engineering Physics, Wright-Patterson AFB, OH 45433, USA 3: Air Force Institute of Technology, Department of Aeronautics and Astronautics, Wright-Patterson AFB, OH 45433, USA; Source Info: Nov2010, Vol. 527 Issue 29/30, p7484; Subject Term: METALS -- Creep; Subject Term: METAL crystals; Subject Term: NICKEL alloys; Subject Term: MATERIALS -- Fatigue; Subject Term: TURBINES -- Blades; Subject Term: MICROSTRUCTURE; Subject Term: TEMPERATURE effect; Author-Supplied Keyword: Creep; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: High temperature; Author-Supplied Keyword: Nickel-base superalloys; Author-Supplied Keyword: PWA1484; Author-Supplied Keyword: Single crystal; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.msea.2010.08.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54365783&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ongstad, A. P. AU - Dente, G. C. AU - Tilton, M. L. AU - Kaspi, R. AU - Chavez, J. R. T1 - The antiguiding parameter in mid-infrared optically pumped semiconductor lasers. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/11/08/ VL - 97 IS - 19 M3 - Article SP - 191111 PB - American Institute of Physics SN - 00036951 AB - We describe measurements of the antiguiding parameter, α, for several optically pumped semiconductor lasers. Three laser structures were investigated; two of the lasers utilize W-quantum wells (QWs) in which 14 InAs/In0.4 GaSb/InAs QWs are imbedded in lattice-matched In0.25 GaAsSb layers. The emission wavelengths of the W lasers were ∼3.5 and 4.5 μm, respectively. The other laser, a double heterostructure (DH) design, contained a ∼1.5 μm InAsSb active region embedded in ∼2.5 μm thick AlAsSb clad regions. The emission wavelength of the DH was λ∼3.8 μm. We employed the Hakki-Paoli method [B. W. Hakki and T. L. Paoli, J. Appl. Phys., 44, 4113, (1973)] in conjunction with a Fourier transform infrared spectrometer to measure subthreshold gain and index variations as a function of pump intensity. To reduce errors associated with incoherent background emission a full spectral curve fit was used to determine the differential gain and index. The results reveal the antiguiding factor in the W lasers to be low with α∼1.0. The antiguiding factor for the DH was markedly larger with α=9.4±1.3. We attribute the low α for the W lasers to the higher QW gain as well as to inhomogeneous broadening induced by the 14 QWs. The differing well widths and the independent optical pumping of the wells, leads to a net gain spectrum that is symmetrical about the gain peak. This symmetry, in turn, leads to small differential index shifts at the gain peak; the result of the small differential index and large differential gain is low antiguiding [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFRARED radiation KW - OPTICAL pumping KW - SEMICONDUCTOR lasers KW - QUANTUM wells KW - LATTICE theory KW - HETEROSTRUCTURES KW - FOURIER transform infrared spectroscopy KW - SPECTRAL line broadening N1 - Accession Number: 55171848; Ongstad, A. P. 1 Dente, G. C. 1 Tilton, M. L. 1 Kaspi, R. 1 Chavez, J. R. 1; Affiliation: 1: Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, Albuquerque, New Mexico 87117,; Source Info: 11/8/2010, Vol. 97 Issue 19, p191111; Subject Term: INFRARED radiation; Subject Term: OPTICAL pumping; Subject Term: SEMICONDUCTOR lasers; Subject Term: QUANTUM wells; Subject Term: LATTICE theory; Subject Term: HETEROSTRUCTURES; Subject Term: FOURIER transform infrared spectroscopy; Subject Term: SPECTRAL line broadening; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1063/1.3509798 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55171848&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Arritt, B. AU - Adomanis, B. AU - Khraishi, T. AU - Smith, D. T1 - Parametric analysis of the strain-dependent behavior of a metamaterial electric resonator. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/11/08/ VL - 97 IS - 19 M3 - Article SP - 191907 PB - American Institute of Physics SN - 00036951 AB - In this paper, we describe the strain-dependent behavior of an electric-LC (ELC) resonator unit cell, commonly used in metamaterial designs. We leverage analytic expression to understand the way strain manifests itself in a change in electromagnetic (EM) response. We verify the simplified physical models using full-wave simulations and generalize the trends to accommodate the strain profile for any arbitrary plane-stress loading scenario. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - METAMATERIALS KW - ELECTRIC resonators KW - ELECTROMAGNETISM KW - SIMULATION methods & models KW - LOADS (Mechanics) N1 - Accession Number: 55171854; Arritt, B. 1,2 Adomanis, B. 1 Khraishi, T. 2 Smith, D. 3; Affiliation: 1: Air Force Research Laboratory/Space Vehicles Directorate, Kirtland AFB, New Mexico 87117, 2: Department of Mechanical Engineering, University of New Mexico, Albuquerque, New Mexico 87131, 3: Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708,; Source Info: 11/8/2010, Vol. 97 Issue 19, p191907; Subject Term: STRAINS & stresses (Mechanics); Subject Term: METAMATERIALS; Subject Term: ELECTRIC resonators; Subject Term: ELECTROMAGNETISM; Subject Term: SIMULATION methods & models; Subject Term: LOADS (Mechanics); Number of Pages: 3p; Document Type: Article L3 - 10.1063/1.3507892 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55171854&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Manurkar, Paritosh AU - Ramezani-Darvish, Shaban AU - Nguyen, Binh-Minh AU - Razeghi, Manijeh AU - Hubbs, John T1 - High performance long wavelength infrared mega-pixel focal plane array based on type-II superlattices. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/11/08/ VL - 97 IS - 19 M3 - Article SP - 193505 PB - American Institute of Physics SN - 00036951 AB - A large format 1k×1k focal plane array (FPA) is realized using type-II superlattice photodiodes for long wavelength infrared detection. Material growth on a 3 in. GaSb substrate exhibits a 50% cutoff wavelength of 11 μm across the entire wafer. The FPA shows excellent imaging. Noise equivalent temperature differences of 23.6 mK at 81 K and 22.5 mK at 68 K are achieved with an integration time of 0.13 ms, a 300 K background and f/4 optics. We report a dark current density of 3.3×10-4 A cm-2 and differential resistance-area product at zero bias R0A of 166 Ω cm2 at 81 K, and 5.1×10-5 A cm-2 and 1286 Ω cm2, respectively, at 68 K. The quantum efficiency obtained is 78%. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - FOCAL planes KW - PHOTODIODES KW - INFRARED detectors KW - SEMICONDUCTOR wafers KW - TEMPERATURE effect KW - ELECTRIC resistance N1 - Accession Number: 55171873; Manurkar, Paritosh 1 Ramezani-Darvish, Shaban 1 Nguyen, Binh-Minh 1 Razeghi, Manijeh 1 Hubbs, John 2; Affiliation: 1: Department of Electrical Engineering and Computer Science, Center for Quantum Devices, Northwestern University, Evanston, Illinois, 60208, 2: U.S. Air Force Research Laboratory/RVSS, Kirtland Air Force Base, New Mexico 87117,; Source Info: 11/8/2010, Vol. 97 Issue 19, p193505; Subject Term: SUPERLATTICES; Subject Term: FOCAL planes; Subject Term: PHOTODIODES; Subject Term: INFRARED detectors; Subject Term: SEMICONDUCTOR wafers; Subject Term: TEMPERATURE effect; Subject Term: ELECTRIC resistance; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1063/1.3514244 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55171873&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Peter, D. AU - Viswanathan, G.B. AU - Dlouhy, A. AU - Eggeler, G. T1 - Analysis of local microstructure after shear creep deformation of a fine-grained duplex γ-TiAl alloy JO - Acta Materialia JF - Acta Materialia Y1 - 2010/11// VL - 58 IS - 19 M3 - Article SP - 6431 EP - 6443 SN - 13596454 AB - Abstract: The present work characterizes the microstructure of a hot-extruded Ti–45Al–5Nb–0.2B–0.2C (at.%) alloy with a fine-grained duplex microstructure after shear creep deformation (temperature 1023K; shear stress 175MPa; shear deformation 20%). Diffraction contrast transmission electron microscopy (TEM) was performed to identify ordinary dislocations, superdislocations and twins. The microstructure observed in TEM is interpreted taking into account the contribution of the applied stress and coherency stresses to the overall local stress state. Two specific locations in the lamellar part of the microstructure were analyzed, where either twins or superdislocations provided c-component deformation in the L10 lattice of the γ phase. Lamellar γ grains can be in soft and hard orientations with respect to the resolved shear stress provided by the external load. The presence of twins can be rationalized by the superposition of the applied stress and local coherency stresses. The presence of superdislocations in hard γ grains represents indirect evidence for additional contributions to the local stress state associated with stress redistribution during creep. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - SHEAR (Mechanics) KW - CREEP (Materials) KW - DEFORMATIONS (Mechanics) KW - TITANIUM alloys KW - TEMPERATURE effect KW - TRANSMISSION electron microscopy KW - COHERENT states KW - LOADS (Mechanics) KW - Dislocations KW - Shear creep deformation KW - Titanium aluminides KW - Transmission electron microscopy KW - Twinning N1 - Accession Number: 53971733; Peter, D. 1; Email Address: dennis.peter@rub.de Viswanathan, G.B. 1,2 Dlouhy, A. 3 Eggeler, G. 1; Affiliation: 1: Institute for Materials, Ruhr University Bochum, Universitätsstraße 150, 44801 Bochum, Germany 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 3: Institute of Physics of Materials, Academy of Sciences of the Czech Republic, 61662 Brno, Zizkova 22, Czech Republic; Source Info: Nov2010, Vol. 58 Issue 19, p6431; Subject Term: MICROSTRUCTURE; Subject Term: SHEAR (Mechanics); Subject Term: CREEP (Materials); Subject Term: DEFORMATIONS (Mechanics); Subject Term: TITANIUM alloys; Subject Term: TEMPERATURE effect; Subject Term: TRANSMISSION electron microscopy; Subject Term: COHERENT states; Subject Term: LOADS (Mechanics); Author-Supplied Keyword: Dislocations; Author-Supplied Keyword: Shear creep deformation; Author-Supplied Keyword: Titanium aluminides; Author-Supplied Keyword: Transmission electron microscopy; Author-Supplied Keyword: Twinning; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.actamat.2010.08.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53971733&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McQuilling, Mark AU - Wolff, Mitch AU - Fonov, Sergey AU - Crafton, Jim AU - Sondergaard, Rolf T1 - Experimental Investigation of a High-Lift Low-Pressure Turbine Suction Surface. JO - AIAA Journal JF - AIAA Journal Y1 - 2010/11// VL - 48 IS - 11 M3 - Article SP - 2465 EP - 2471 SN - 00011452 AB - This work employs a shear and stress sensitive film(S3F) to investigate the suction surface flowfeatures associated with a higher-lift low-pressure turbine airfoil (L2F). Well-behaved higher-lift low-pressure turbine designs suffer from an inability to accurately predict the transition location above the suction surface, and the separation onset locations obtained with the S3F sensor herein allow the validation of the separated-flow transition model used in the L2F design cycle. Improvements to the S3F measurement technique are explained in this work, and results are compared over a range of Reynolds numbers at 3.3%freestreamturbulence including skin friction measurements at the trailing edge of the airfoil. Results demonstrate an improvement to the S3F data reduction process by accounting for the tunnel and model vibration, which will allow a greater range of sensor application. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHEAR (Mechanics) KW - AEROFOILS KW - TURBINES -- Aerodynamics KW - DATA reduction KW - TURBULENCE N1 - Accession Number: 55416314; McQuilling, Mark 1 Wolff, Mitch 1 Fonov, Sergey 2 Crafton, Jim 2 Sondergaard, Rolf 3; Affiliation: 1: Wright State University, Dayton, Ohio 45435 2: Innovative Scientific Solutions, Dayton, Ohio 45440 3: U.S. Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433; Source Info: Nov2010, Vol. 48 Issue 11, p2465; Subject Term: SHEAR (Mechanics); Subject Term: AEROFOILS; Subject Term: TURBINES -- Aerodynamics; Subject Term: DATA reduction; Subject Term: TURBULENCE; Number of Pages: 7p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.2514/1.37579 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55416314&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Holt, Blaine D. T1 - Roads, Power, and Schools: A Brighter Future for Bishkek and the Region. JO - American Foreign Policy Interests JF - American Foreign Policy Interests Y1 - 2010/11//Nov/Dec2010 VL - 32 IS - 6 M3 - Article SP - 386 EP - 396 PB - Routledge SN - 10803920 AB - This analysis of U.S. perspectives on Kyrgyzstan centers on the debate that has emerged over seemingly contending objectives of U.S. policy: stability versus democracy, and concludes that they are complementary, not conflicting, goals. In reaching that conclusion, the article traces the combative style of political leadership in Kyrgyzstan since it became independent of the Soviet Union, explains the strategic importance of the country within the region, identifies it as the vital airborne logistic hub for operations in Afghanistan, and makes a telling case for concluding that rebuilding its crumbling infrastructure with U.S. aid and manpower will lead to the development of programs and institutions from which a democracy can evolve. [ABSTRACT FROM AUTHOR] AB - Copyright of American Foreign Policy Interests is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERNATIONAL relations KW - POLITICAL leadership KW - DEMOCRACY KW - LABOR supply KW - ECONOMIC policy KW - KYRGYZSTAN N1 - Accession Number: 55815783; Holt, Blaine D. 1; Affiliation: 1: United States Air Force, Council on Foreign Relations (CFR); Source Info: Nov/Dec2010, Vol. 32 Issue 6, p386; Subject Term: INTERNATIONAL relations; Subject Term: POLITICAL leadership; Subject Term: DEMOCRACY; Subject Term: LABOR supply; Subject Term: ECONOMIC policy; Subject Term: KYRGYZSTAN; NAICS/Industry Codes: 911410 Foreign affairs; NAICS/Industry Codes: 928120 International Affairs; NAICS/Industry Codes: 561320 Temporary Help Services; Number of Pages: 11p; Document Type: Article L3 - 10.1080/10803920.2010.535764 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55815783&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Xu, Zhanfeng AU - Bunker, Christopher AU - Harrington, Peterde T1 - Classification of Jet Fuel Properties by Near-Infrared Spectroscopy Using Fuzzy Rule-Building Expert Systems and Support Vector Machines. JO - Applied Spectroscopy JF - Applied Spectroscopy Y1 - 2010/11// VL - 64 IS - 11 M3 - Article SP - 1251 EP - 1258 SN - 00037028 AB - Monitoring the changes of jet fuel physical properties is important because fuel used in high-performance aircraft must meet rigorous specifications. Near-infrared (NIR) spectroscopy is a fast method to characterize fuels. Because of the complexity of NIR spectral data, chemometric techniques are used to extract relevant information from spectral data to accurately classify physical properties of complex fuel samples. In this work, discrimination of fuel types and classification of flash point, freezing point, boiling point (10%, v/v), boiling point (50%, v/v), and boiling point (90%, v/v) of jet fuels (JP-5, JP-8, Jet A, and Jet A1) were investigated. Each physical property was divided into three classes, low, medium, and high ranges, using two evaluations with different class boundary definitions. The class boundaries function as the threshold to alarm when the fuel properties change. Optimal partial least squares discriminant analysis (oPLS-DA), fuzzy rule-building expert system (FuRES), and support vector machines (SVM) were used to build the calibration models between the NIR spectra and classes of physical property of jet fuels. OPLS-DA, FuRES, and SVM were compared with respect to prediction accuracy. The validation of the calibration model was conducted by applying bootstrap Latin partition (BLP), which gives a measure of precision. Prediction accuracy of 97 ± 2% of the flash point, 94 ± 2% of freezing point, 99 ± 1% of the boiling point (10%, v/v), 98 ± 2% of the boiling point (50%, v/v), and 96 ± 1% of the boiling point (90%, v/v) were obtained by FuRES in one boundaries definition. Both FuRES and SVM obtained statistically better prediction accuracy over those obtained by oPLS-DA. The results indicate that combined with chemometric classifiers NIR spectroscopy could be a fast method to monitor the changes of jet fuel physical properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Spectroscopy is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JET planes -- Fuel KW - INFRARED spectroscopy KW - EXPERT systems (Computer science) KW - SUPPORT vector machines KW - CHEMOMETRICS KW - LEAST squares KW - DISCRIMINANT analysis KW - CALIBRATION N1 - Accession Number: 55370109; Xu, Zhanfeng 1 Bunker, Christopher 2 Harrington, Peterde 3; Email Address: peter.harrington@ohio.edu; Affiliation: 1: Center for Intelligent Chemical Instrumentation, Clippinger Laboratories, Department of Chemistry, Ohio University, Athens, Ohio 45701-2979 2: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433 3: Center for Intelligent Chemical Instrumentation, Clippinger Laboratories, Department of Chemistry, Ohio University, Athens, Ohio 45701-2979;, Email:; Source Info: Nov2010, Vol. 64 Issue 11, p1251; Subject Term: JET planes -- Fuel; Subject Term: INFRARED spectroscopy; Subject Term: EXPERT systems (Computer science); Subject Term: SUPPORT vector machines; Subject Term: CHEMOMETRICS; Subject Term: LEAST squares; Subject Term: DISCRIMINANT analysis; Subject Term: CALIBRATION; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55370109&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lin AU - Li, Xuesong AU - Cai, Weiwei AU - Roy, Sukesh AU - Gord, James AU - Sanders, Scott T1 - Selection of Multiple Optimal Absorption Transitions for Nonuniform Temperature Sensing. JO - Applied Spectroscopy JF - Applied Spectroscopy Y1 - 2010/11// VL - 64 IS - 11 M3 - Article SP - 1274 EP - 1282 SN - 00037028 AB - A crucial aspect in the design of sensors based on absorption spectroscopy involves selecting the optimal transitions. Therefore, the goal of this paper is to develop a method of selecting multiple optimal transitions for the measurement of nonuniform temperature distributions based on absorption spectroscopy. Previously developed methods are largely restricted to the relatively simple case of selecting two transitions for uniform distributions. Our new method addresses the restrictions of previous methods and is applicable to more general cases. The method was validated using both numerical tests and experimental results and is expected to be useful in the design of sensors based on multispectral absorption spectroscopy. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Spectroscopy is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSORPTION spectra KW - TEMPERATURE measurements KW - DETECTORS KW - UNIFORM distribution (Probability theory) KW - NUMERICAL analysis KW - PHASE transformations (Physics) N1 - Accession Number: 55370112; Lin 1 Li, Xuesong 2 Cai, Weiwei 2 Roy, Sukesh 3 Gord, James 4 Sanders, Scott 5; Email Address: LinMa@clemson.edu; Affiliation: 1: Department of Mechanical Engineering, Clemson University, Clemson, South Carolina 29634;, Email: 2: Department of Mechanical Engineering, Clemson University, Clemson, South Carolina 29634 3: Spectral Energies LLC, 5100 Springfield Street, Suite 301, Dayton, Ohio 45431 4: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, Ohio 45433 5: Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706; Source Info: Nov2010, Vol. 64 Issue 11, p1274; Subject Term: ABSORPTION spectra; Subject Term: TEMPERATURE measurements; Subject Term: DETECTORS; Subject Term: UNIFORM distribution (Probability theory); Subject Term: NUMERICAL analysis; Subject Term: PHASE transformations (Physics); Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55370112&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ibey, Bennett L. AU - Pakhomov, Andrei G. AU - Gregory, Betsy W. AU - Khorokhorina, Vera A. AU - Roth, Caleb C. AU - Rassokhin, Mikhail A. AU - Bernhard, Joshua A. AU - Wilmink, Gerald J. AU - Pakhomova, Olga N. T1 - Selective cytotoxicity of intense nanosecond-duration electric pulses in mammalian cells JO - BBA - General Subjects JF - BBA - General Subjects Y1 - 2010/11// VL - 1800 IS - 11 M3 - Article SP - 1210 EP - 1219 SN - 03044165 AB - Abstract: Background: Nanosecond electric pulses (EP) disrupt cell membrane and organelles and cause cell death in a manner different from the conventional irreversible electroporation. We explored the cytotoxic effect of 10-ns EP (quantitation, mechanisms, efficiency, and specificity) in comparison with 300-ns, 1.8- and 9-μs EP. Methods: Effects in Jurkat and U937 cells were characterized by survival assays, DNA electrophoresis and flow cytometry. Results: 10-ns EP caused apoptotic or necrotic death within 2–20h. Survival (S, %) followed the absorbed dose (D, J/g) as: S = αD (−K), where coefficients K and α determined the slope and the “shoulder” of the survival curve. K was similar in all groups, whereas α was cell type- and pulse duration-dependent. Long pulses caused immediate propidium uptake and phosphatidylserine (PS) externalization, whereas 10-ns pulses caused PS externalization only. Conclusions: 1.8- and 9-μs EP cause cell death efficiently and indiscriminately (LD50 1–3J/g in both cell lines); 10-ns EP are less efficient, but very selective (LD50 50–80J/g for Jurkat and 400–500J/g for U937); 300-ns EP show intermediate effects. Shorter EP open propidium-impermeable, small membrane pores (”nanopores”), triggering different cell death mechanisms. General significance: Nanosecond EP can selectively target certain cells in medical applications like tumor ablation. [ABSTRACT FROM AUTHOR] AB - Copyright of BBA - General Subjects is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CELL-mediated cytotoxicity KW - ELECTROPORATION KW - PHOSPHATIDYLSERINES KW - CELL death KW - CELL membranes KW - ELECTRONIC pulse techniques KW - 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide ( MTT ) KW - Cell death KW - Dose effect KW - electric pulses ( EP ) KW - Electroporation KW - irreversible electroporation ( IRE ) KW - Membrane permeabilization KW - Nanoelectroporation KW - Nanopores KW - Nanosecond pulses KW - nanosecond-duration electric pulses ( nsEP ) KW - phosphatidylserine ( PS ) KW - Pulsed electric field N1 - Accession Number: 53406567; Ibey, Bennett L. 1 Pakhomov, Andrei G. 2 Gregory, Betsy W. 2 Khorokhorina, Vera A. 2 Roth, Caleb C. 3 Rassokhin, Mikhail A. 2 Bernhard, Joshua A. 1 Wilmink, Gerald J. 1 Pakhomova, Olga N. 2; Email Address: olga@pakhomova.net; Affiliation: 1: Radio Frequency Radiation Branch, 711th Human Performance Wing, Air Force Research Laboratory, Brooks City-Base, San Antonio, TX, USA 2: Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, USA 3: General Dynamics Information Technology, Brooks City-Base, San Antonio, TX, USA; Source Info: Nov2010, Vol. 1800 Issue 11, p1210; Subject Term: CELL-mediated cytotoxicity; Subject Term: ELECTROPORATION; Subject Term: PHOSPHATIDYLSERINES; Subject Term: CELL death; Subject Term: CELL membranes; Subject Term: ELECTRONIC pulse techniques; Author-Supplied Keyword: 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide ( MTT ); Author-Supplied Keyword: Cell death; Author-Supplied Keyword: Dose effect; Author-Supplied Keyword: electric pulses ( EP ); Author-Supplied Keyword: Electroporation; Author-Supplied Keyword: irreversible electroporation ( IRE ); Author-Supplied Keyword: Membrane permeabilization; Author-Supplied Keyword: Nanoelectroporation; Author-Supplied Keyword: Nanopores; Author-Supplied Keyword: Nanosecond pulses; Author-Supplied Keyword: nanosecond-duration electric pulses ( nsEP ); Author-Supplied Keyword: phosphatidylserine ( PS ); Author-Supplied Keyword: Pulsed electric field; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.bbagen.2010.07.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53406567&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Rao, Rahul AU - Eyink, Kurt G. AU - Maruyama, Benji T1 - Single-walled carbon nanotube growth from liquid gallium and indium JO - Carbon JF - Carbon Y1 - 2010/11// VL - 48 IS - 13 M3 - Letter SP - 3971 EP - 3973 SN - 00086223 AB - Abstract: We present the first demonstration of single-walled carbon nanotube growth from liquid gallium and indium catalysts. The nanotubes were grown via thermal chemical vapor deposition from 1 to 3nm films of gallium and indium, which dissociate into liquid droplets on silicon substrates at high temperatures. The nanotubes were characterized by Raman spectroscopy and atomic force microscopy and are found to have diameters between 1 and 2nm. [ABSTRACT FROM AUTHOR] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - GALLIUM (Metal) KW - INDIUM KW - LIQUID metals KW - CHEMICAL vapor deposition KW - SILICON KW - RAMAN spectroscopy KW - ATOMIC force microscopy N1 - Accession Number: 52821842; Rao, Rahul 1 Eyink, Kurt G. 1 Maruyama, Benji; Email Address: Benji.Maruyama@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, United States; Source Info: Nov2010, Vol. 48 Issue 13, p3971; Subject Term: CARBON nanotubes; Subject Term: GALLIUM (Metal); Subject Term: INDIUM; Subject Term: LIQUID metals; Subject Term: CHEMICAL vapor deposition; Subject Term: SILICON; Subject Term: RAMAN spectroscopy; Subject Term: ATOMIC force microscopy; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 3p; Document Type: Letter L3 - 10.1016/j.carbon.2010.06.065 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52821842&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Arthur, Winfred AU - Day, Eric Anthony AU - Villado, Anton J. AU - Boatman, Paul R. AU - Kowollik, Vanessa AU - Bennett, Winston AU - Bhupatkar, Alok T1 - The Effect of Distributed Practice on Immediate Posttraining, and Long-Term Performance on a Complex Command-and-Control Simulation Task. JO - Human Performance JF - Human Performance Y1 - 2010/11//Nov/Dec2010 VL - 23 IS - 5 M3 - Article SP - 428 EP - 445 PB - Taylor & Francis Ltd SN - 08959285 AB - Using 192 paid participants who trained on a command-and-control microworld simulation, we examined the comparative effectiveness of two distributed practice schedules in enhancing performance at the end of training as well as after an 8-week nonuse period. Longer interstudy intervals (10 hr of practice over 2 weeks) led to higher levels of skill at the end of training and after nonuse than shorter interstudy intervals (10 hr of practice over 1 week). The study begins to address gaps in the skill retention literature by using a cognitively complex task and an extended nonuse interval. The primary implication of our findings is that scheduling longer interstudy practice intervals is a viable means of enhancing immediate posttraining performance and promoting long-term skill retention for cognitively complex tasks. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Performance is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABILITY KW - TRAINING KW - COMMAND & control systems KW - MILITARY education KW - PERFORMANCE evaluation KW - THEORY of knowledge KW - SIMULATION methods & models N1 - Accession Number: 55310457; Arthur, Winfred 1 Day, Eric Anthony 2 Villado, Anton J. 1 Boatman, Paul R. 2 Kowollik, Vanessa 2 Bennett, Winston 3 Bhupatkar, Alok 1; Affiliation: 1: Texas A&M University, 2: University of Oklahoma, 3: U.S. Air Force Research Laboratory,; Source Info: Nov/Dec2010, Vol. 23 Issue 5, p428; Subject Term: ABILITY; Subject Term: TRAINING; Subject Term: COMMAND & control systems; Subject Term: MILITARY education; Subject Term: PERFORMANCE evaluation; Subject Term: THEORY of knowledge; Subject Term: SIMULATION methods & models; NAICS/Industry Codes: 928110 National Security; NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; NAICS/Industry Codes: 611110 Elementary and Secondary Schools; Number of Pages: 18p; Document Type: Article L3 - 10.1080/08959285.2010.515277 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55310457&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kennelly, Edward J. AU - Price, Stephan D. AU - Kraemer, Kathleen E. AU - Aschbrenner, Ryan T1 - Calibration against the Moon I: A disk-resolved lunar model for absolute reflectance calibration JO - ICARUS JF - ICARUS Y1 - 2010/11// VL - 210 IS - 1 M3 - Article SP - 14 EP - 36 SN - 00191035 AB - Abstract: We present a model of the absolute radiance of the disk-resolved Moon at visible to near infrared wavelengths. It has been developed in order to use the Moon as a calibration reference, particularly by space-based sensors observing the Earth. We begin with the development of Hillier et al. (Hillier, J., Buratti, B., Hill, K. [1999]. Icarus 141, 205–225) for the reflectance as a function of phase angle and base the lunar reflectance on the Clementine 0.750μm basemap. We adopt Hapke’s (Hapke, B. [2002]. Icarus 157, 523–534) expression for the multiple scattering term, including the more accurate approximation to the Chandrasekhar H function. The geometry is based on the Jet Propulsion Laboratory Lunar Ephemeris DE 421, and the topographic slope is from the Kaguya-LALT laser altimetry (). We define three types of terrain by combining the reflectance from the Clementine basemap and the topographic model to specify maria, highlands, and crater regions, and allow mixed types between each class. Parameters of the model are solved for as a function of surface type and wavelength by comparison against data “chips” from the Robotic Lunar Observatory (ROLO; Kieffer, H.H., Stone, T.C. [2005]. Astron. J. 129, 2887–2901). The reflectance in any waveband may be computed by spectral interpolation of the model predictions relative to the scaled Apollo 16 soil spectrum. The accuracy of the model, evaluated against ROLO imagery, was found to be 2–4%. [ABSTRACT FROM AUTHOR] AB - Copyright of ICARUS is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JET propulsion KW - CALIBRATION KW - SPECTRAL reflectance KW - MATHEMATICAL models KW - WAVELENGTHS KW - SCATTERING (Physics) KW - OPTICAL disks KW - MOON KW - SURFACE KW - Moon, Surface N1 - Accession Number: 54098437; Kennelly, Edward J. 1 Price, Stephan D. 2 Kraemer, Kathleen E. 2; Email Address: afrl.rvb.pa@hanscom.af.mil Aschbrenner, Ryan 1; Affiliation: 1: Atmospheric and Environmental Research, Inc., 131 Hartwell Avenue, Lexington, MA 02421, United States 2: Air Force Research Laboratory, Space Vehicles Division, 29 Randolph Road, Hanscom AFB, MA 01731, United States; Source Info: Nov2010, Vol. 210 Issue 1, p14; Subject Term: JET propulsion; Subject Term: CALIBRATION; Subject Term: SPECTRAL reflectance; Subject Term: MATHEMATICAL models; Subject Term: WAVELENGTHS; Subject Term: SCATTERING (Physics); Subject Term: OPTICAL disks; Subject Term: MOON; Subject Term: SURFACE; Author-Supplied Keyword: Moon, Surface; NAICS/Industry Codes: 334613 Blank Magnetic and Optical Recording Media Manufacturing; NAICS/Industry Codes: 334614 Software and Other Prerecorded Compact Disc, Tape, and Record Reproducing; NAICS/Industry Codes: 334610 Manufacturing and reproducing magnetic and optical media; Number of Pages: 23p; Document Type: Article L3 - 10.1016/j.icarus.2010.05.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54098437&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eschleman, Kevin J. AU - Bowling, Nathan A. AU - Alarcon, Gene M. T1 - A Meta-Analytic Examination of Hardiness. JO - International Journal of Stress Management JF - International Journal of Stress Management Y1 - 2010/11// VL - 17 IS - 4 M3 - Article SP - 277 EP - 307 SN - 10725245 AB - Hardiness, which is a multidimensional personality trait that is hypothesized to protect people from the effects of stress, has attracted considerable research attention during the last 30 years. The current study provides a meta-analytic review of hardiness. Specifically, we examined the relationships between the hardiness facets, the relationship between hardiness and other personality variables, as well as the relationships between hardiness and several hypothesized criteria, including stressors, strains, social support, coping, and performance. Our analyses generally suggest that hardiness is: (a) positively related to other personality traits that are expected to protect people from stress, (b) negatively related to personality traits that are expected to exacerbate the effects of stress, (c) negatively related to stressors, strains, and regressive coping, and (d) positively related to social support, active coping, and performance. Regression analyses suggest that hardiness is significantly related to important criteria after the effects of other personality traits (e.g., the Five Factor Model traits) are controlled. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Stress Management is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADJUSTMENT (Psychology) KW - MENTAL depression KW - HEALTH behavior KW - INFORMATION storage & retrieval systems -- Psychology KW - JOB satisfaction KW - MEDLINE KW - META-analysis KW - PERSONALITY KW - REGRESSION analysis KW - RESILIENCE (Personality trait) KW - STRESS (Psychology) KW - SOCIAL support KW - WELL-being KW - hardiness KW - health KW - meta-analysis N1 - Accession Number: 84662795; Eschleman, Kevin J. 1; Email Address: eschleman.2@wright.edu Bowling, Nathan A. 1 Alarcon, Gene M. 2; Affiliation: 1: Wright State University 2: Air Force Research Laboratory, Dayton, OH; Source Info: Nov2010, Vol. 17 Issue 4, p277; Subject Term: ADJUSTMENT (Psychology); Subject Term: MENTAL depression; Subject Term: HEALTH behavior; Subject Term: INFORMATION storage & retrieval systems -- Psychology; Subject Term: JOB satisfaction; Subject Term: MEDLINE; Subject Term: META-analysis; Subject Term: PERSONALITY; Subject Term: REGRESSION analysis; Subject Term: RESILIENCE (Personality trait); Subject Term: STRESS (Psychology); Subject Term: SOCIAL support; Subject Term: WELL-being; Author-Supplied Keyword: hardiness; Author-Supplied Keyword: health; Author-Supplied Keyword: meta-analysis; NAICS/Industry Codes: 624190 Other Individual and Family Services; Number of Pages: 31p; Document Type: Article L3 - 10.1037/a0020476 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=84662795&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gumbs, Godfrey AU - Balassis, Antonios AU - Danhong Huang T1 - Energy bands, conductance, and thermoelectric power for ballistic electrons in a nanowire with spin-orbit interaction. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/11// VL - 108 IS - 9 M3 - Article SP - 093704 PB - American Institute of Physics SN - 00218979 AB - We calculated the effects of spin-orbit interaction on the energy bands, ballistic conductance (G), and the electron-diffusion thermoelectric power (Sd) of a nanowire by varying the temperature, electron density, and width of the wire. The potential barriers at the edges of the wire are assumed to be very high. A consequence of the boundary conditions used in this model is determined by the energy band structure, resulting in wider plateaus when the electron density is increased due to larger energy-level separation as the higher subbands are occupied by electrons. The nonlinear dependence of the transverse confinement on position with respect to the well center excludes the 'polelike feature' in G which is obtained when a harmonic potential is employed for confinement. At low temperature, Sd increases linearly with T but deviates from the linear behavior for large values of T. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENERGY bands KW - ELECTRONS -- Diffusion KW - THERMOELECTRICITY KW - TEMPERATURE KW - ELECTRON distribution N1 - Accession Number: 55200383; Gumbs, Godfrey 1,2; Email Address: ggumbs@hunter.cuny.edu Balassis, Antonios 3; Email Address: balassis@fordham.edu Danhong Huang 4; Email Address: danhong.huang@kirtland.af.mil; Affiliation: 1: Department of Physics and Astronomy, Hunter College of the City University of New York, 695 Park Avenue, New York, New York 10065, USA 2: Donostia International Physics Center (DIPC), P. de Manuel Lardizabal, 4, 20018 San Sebastián, Basque Country, Spain 3: Department of Physics, Fordham University, 441 East Fordham Road, Bronx, New York 10458, USA 4: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA; Source Info: Nov2010, Vol. 108 Issue 9, p093704; Subject Term: ENERGY bands; Subject Term: ELECTRONS -- Diffusion; Subject Term: THERMOELECTRICITY; Subject Term: TEMPERATURE; Subject Term: ELECTRON distribution; Number of Pages: 9p; Illustrations: 1 Diagram, 8 Graphs; Document Type: Article L3 - 10.1063/1.3493113 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55200383&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jeffrey W. Oliver AU - David J. Stolarski AU - Gary D. Noojin AU - Harvey M. Hodnett AU - Corey A. Harbert AU - Kurt J. Schuster AU - Michael F. Foltz AU - Semih S. Kumru AU - Clarence P. Cain AU - C. J. Finkeldei AU - Gavin D. Buffington AU - Isaac D. Noojin AU - Robert J. Thomas T1 - Infrared skin damage thresholds from 1940-nm continuous-wave laser exposures. JO - Journal of Biomedical Optics JF - Journal of Biomedical Optics Y1 - 2010/11// VL - 15 IS - 6 M3 - Article SP - 065008 EP - 065008-10 SN - 10833668 AB - A series of experiments are conducted in vivousing Yucatan mini-pigs (Sus scrofa domestica) to determine thermal damage thresholds to the skin from 1940-nm continuous-wave thulium fiber laser irradiation. Experiments employ exposure durations from 10 ms to 10 s and beam diameters of approximately 4.8 to 18 mm. Thermal imagery data provide a time-dependent surface temperature response from the laser. A damage endpoint of minimally visible effect is employed to determine threshold for damage at 1 and 24 h postexposure. Predicted thermal response and damage thresholds are compared with a numerical model of optical-thermal interaction. Results are compared with current exposure limits for laser safety. It is concluded that exposure limits should be based on data representative of large-beam exposures, where effects of radial diffusion are minimized for longer-duration damage thresholds. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Biomedical Optics is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFRARED radiation in medicine KW - SKIN diseases KW - ELECTROMAGNETIC waves KW - LASER beams KW - THULIUM KW - OPTICAL fibers KW - NUMERICAL analysis N1 - Accession Number: 57192646; Jeffrey W. Oliver 1 David J. Stolarski 1 Gary D. Noojin 1 Harvey M. Hodnett 1 Corey A. Harbert 1 Kurt J. Schuster 1 Michael F. Foltz 1 Semih S. Kumru 1 Clarence P. Cain 1 C. J. Finkeldei 1 Gavin D. Buffington 1 Isaac D. Noojin 1 Robert J. Thomas 1; Affiliation: 1: Air Force Research Laboratory, 2624 Louis Bauer Drive, San Antonio, Texas 78235-5148; Source Info: Nov2010, Vol. 15 Issue 6, p065008; Subject Term: INFRARED radiation in medicine; Subject Term: SKIN diseases; Subject Term: ELECTROMAGNETIC waves; Subject Term: LASER beams; Subject Term: THULIUM; Subject Term: OPTICAL fibers; Subject Term: NUMERICAL analysis; NAICS/Industry Codes: 327214 Glass manufacturing; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57192646&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Foster, Craig A. AU - Foster, Joshua D. AU - Campbell, W. Keith T1 - Are Secret Relationships Hot, Then Not? Romantic Secrecy as a Function of Relationship Duration. JO - Journal of Social Psychology JF - Journal of Social Psychology Y1 - 2010/11//Nov/Dec2010 VL - 150 IS - 6 M3 - Article SP - 668 EP - 688 PB - Taylor & Francis Ltd SN - 00224545 AB - Are secret romances alluring or aversive? One theory suggests that romantic secrecy increases obsessive preoccupation with romantic partners and thereby enhances romantic relationships. Another theory suggests that romantic secrecy is burdensome and thereby undermines romantic relationships. We sought to rectify these conflicting perspectives by examining romantic secrecy and relationship duration using a large, Internet-based sample (N = 564). We predicted that romantic secrecy would have a positive influence in newer romantic relationships (obsessive preoccupation theory) and a negative influence in older romantic relationships (burden theory). In contrast, the obtained results indicate that romantic secrecy is a burden to both new and old romantic relationships [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Social Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORRELATION (Statistics) KW - SECRECY KW - RELATIONSHIP duration KW - INTERPERSONAL relations KW - SOCIAL psychology KW - METHODOLOGY KW - INTERNET surveys KW - PSYCHOLOGICAL aspects KW - attraction KW - romantic relationships KW - romantic secrecy N1 - Accession Number: 55028027; Foster, Craig A. 1 Foster, Joshua D. 2 Campbell, W. Keith 3; Affiliation: 1: United States Air Force Academy, 2: University of South Alabama, 3: University of Georgia,; Source Info: Nov/Dec2010, Vol. 150 Issue 6, p668; Subject Term: CORRELATION (Statistics); Subject Term: SECRECY; Subject Term: RELATIONSHIP duration; Subject Term: INTERPERSONAL relations; Subject Term: SOCIAL psychology; Subject Term: METHODOLOGY; Subject Term: INTERNET surveys; Subject Term: PSYCHOLOGICAL aspects; Author-Supplied Keyword: attraction; Author-Supplied Keyword: romantic relationships; Author-Supplied Keyword: romantic secrecy; Number of Pages: 21p; Illustrations: 3 Charts; Document Type: Article L3 - 10.1080/00224540903365547 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55028027&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Babuška, Vít AU - Coombs, Douglas M. AU - Goodding, James C. AU - Ardelean, Emil V. AU - Robertson, Lawrence M. AU - Lane, Steven A. T1 - Modeling and Experimental Validation of Space Structures with Wiring Harnesses. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2010/11//Nov/Dec2010 VL - 47 IS - 6 M3 - Article SP - 1038 EP - 1052 SN - 00224650 AB - Power- and data-handling cables, which can account for up to 30% of a satellite's dry mass, couple with the spacecraft structure and impact dynamic response. Structural dynamic measurements suggest that a more complete representation of cable effects is needed to improve model predictive accuracy. To that end, a study was performed to characterize cable harness impacts on dynamic response. From this study, a finite element modeling method supported by empirically determined cable properties and structural behavior was developed. The modeling method was validated with a considerable amount of model simulation and experimental data for a variety of cables attached to a free-free beam. At low frequencies, the cable effect was dominated by mass and stiffness, changing the apparent stiffness; damping was a secondary effect. At higher frequencies, where the cables themselves were resonant, the cable effect was dissipative, increasing the apparent damping in addition to affecting the overall frequency response. Tiedown stiffness was found to be an important, but difficult to measure, parameter. Finite element models of a cabled beam were shown to be valid for all cable families studied. As a result, the finite element modeling method itself was validated. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARTIFICIAL satellites KW - LARGE space structures (Astronautics) KW - CABLES KW - STRUCTURAL dynamics KW - FINITE element method N1 - Accession Number: 57403746; Babuška, Vít 1,2 Coombs, Douglas M. 3,4 Goodding, James C. 3,4 Ardelean, Emil V. 4,5 Robertson, Lawrence M. 2,6 Lane, Steven A. 4,6; Affiliation: 1: Sandia National Laboratories, Albuquerque, New Mexico 87185 2: Associate Fellow AIAA 3: CSA Engineering, Albuquerque, New Mexico 87123 4: Senior Member AIAA 5: Schafer Corporation, Albuquerque, New Mexico 87106 6: U. S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117; Source Info: Nov/Dec2010, Vol. 47 Issue 6, p1038; Subject Term: ARTIFICIAL satellites; Subject Term: LARGE space structures (Astronautics); Subject Term: CABLES; Subject Term: STRUCTURAL dynamics; Subject Term: FINITE element method; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 332619 Other fabricated wire product manufacturing; NAICS/Industry Codes: 332618 Other Fabricated Wire Product Manufacturing; Number of Pages: 15p; Illustrations: 6 Black and White Photographs, 6 Diagrams, 10 Charts, 20 Graphs; Document Type: Article L3 - 10.2514/1.48078 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57403746&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mejia-Ariza, Juan M. AU - Murphey, Thomas W. AU - Dumm, Hans-Peter T1 - Deployable Trusses Based on Large Rotation Flexure Hinges. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2010/11//Nov/Dec2010 VL - 47 IS - 6 M3 - Article SP - 1053 EP - 1062 SN - 00224650 AB - Formulations for the strength, stiffness, mass efficiency, and packaging of deployable trusses using flexure hinges are developed and compared with the experiment within. The equations are based on classical buckling theory, Euler buckling with engineering approximations, and finite element-based models to predict the column and bending strengths of solid rod and tubular trusses with slender flexure hinges. Flexure hinge material performance metrics are derived and used to show that, while both mass efficient trusses of solid rods and trusses of tubes are feasible with existing materials, trusses of solid rods are significantly more strain limited. A representative high compaction ratio deployable truss with pultruded carbon fiber reinforced plastic rods and super elastic nickel-titanium alloy flexure hinges was fabricated and tested. The compressive strength of the truss was 48% less than predicted and the compressive stiffness of the truss was 12% less than predicted. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRUSSES KW - FLEXURE KW - HINGES KW - EQUATIONS KW - BUCKLING (Mechanics) KW - FINITE element method N1 - Accession Number: 57403747; Mejia-Ariza, Juan M. 1,2 Murphey, Thomas W. 3,4 Dumm, Hans-Peter 3; Affiliation: 1: L'Garde Inc., Tustin, California 92780 2: Member AIAA 3: U.S. Air Force Research Laboratory, Albuquerque, New Mexico 87117 4: Senior Member AIAA; Source Info: Nov/Dec2010, Vol. 47 Issue 6, p1053; Subject Term: TRUSSES; Subject Term: FLEXURE; Subject Term: HINGES; Subject Term: EQUATIONS; Subject Term: BUCKLING (Mechanics); Subject Term: FINITE element method; NAICS/Industry Codes: 416330 Hardware merchant wholesalers; NAICS/Industry Codes: 238130 Framing Contractors; NAICS/Industry Codes: 321214 Truss Manufacturing; Number of Pages: 10p; Illustrations: 7 Black and White Photographs, 7 Diagrams, 4 Charts, 6 Graphs; Document Type: Article L3 - 10.2514/1.48658 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=57403747&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Iyer, Nandini AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Effects of target-masker contextual similarity on the multimasker penalty in a three-talker diotic listening task. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2010/11// VL - 128 IS - 5 M3 - Article SP - 2998 EP - 3010 SN - 00014966 AB - In many multitalker listening tasks, the degradation in performance that occurs when the number of interfering talkers increases from one to two is much larger than would be predicted from the corresponding decrease in the signal-to-noise ratio (SNR). In this experiment, a variety of contextually-relevant speech maskers, contextually-irrelevant speech maskers and non-speech maskers were used to examine the impact that the characteristics of the interfering sound sources have on the magnitude of this 'multimasker penalty.' The results show that a significant multimasker penalty only occurred in cases where two specific conditions were met: 1) the stimulus contained at least one contextually-relevant masker that could be confused with the target; and 2) the signal-to-noise ratio of the target relative to the combined masker stimulus was less than 0 dB. Remarkably, in cases where one masker was contextually relevant, the specific characteristics of the second masker had virtually no impact on the size of the multimasker penalty. Indeed, when the results were corrected for random guessing, there was essentially no difference in performance between conditions with three contextually-relevant talkers and those with two contextually-relevant talkers and one irrelevant talker. The results of a second experiment suggest that the listeners are generally able to hear keywords spoken by all three talkers even in situations where the multimasker penalty occurs, implying that the primary cause of the penalty is a degradation in the listener's ability to use prosodic cues and voice characteristics to link together words spoken at different points in the target phrase. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LISTENING KW - ABILITY testing KW - AUDITORY masking KW - SIGNAL-to-noise ratio KW - SPEECH perception KW - PROSODIC analysis (Linguistics) N1 - Accession Number: 55441653; Iyer, Nandini 1; Email Address: nandini.Iyer@wpafb.af.mil Brungart, Douglas S. 1 Simpson, Brian D. 1; Affiliation: 1: Battlespace Acoustics Branch, Air Force Research Laboratory, 2610 Seventh Street, Wright Patterson Air Force Base, Ohio 45433-7901; Source Info: Nov2010, Vol. 128 Issue 5, p2998; Subject Term: LISTENING; Subject Term: ABILITY testing; Subject Term: AUDITORY masking; Subject Term: SIGNAL-to-noise ratio; Subject Term: SPEECH perception; Subject Term: PROSODIC analysis (Linguistics); Number of Pages: 13p; Illustrations: 1 Diagram, 7 Charts, 5 Graphs; Document Type: Article L3 - 10.1121/1.3479547 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55441653&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sulham, Clifford V. AU - Perram, Glen P. AU - Wilkinson, Michael P. AU - Hostutler, David A. T1 - A pulsed, optically-pumped rubidium laser at high pump intensity JO - Optics Communications JF - Optics Communications Y1 - 2010/11// VL - 283 IS - 21 M3 - Article SP - 4328 EP - 4332 SN - 00304018 AB - Abstract: A rubidium laser operating at 795nm is optically pumped by a pulsed titanium sapphire laser to investigate the dynamics of Diode Pumped Alkali Lasers (DPALs). Linear scaling of output intensity for longitudinal excitation at intensities of 1.3–43kW/cm2 and as much as 32 times threshold is observed. The slope efficiency depends directly on the number of absorbed photons for alkali concentrations of 0.8–2.0×1013 atoms/cm3 with no evidence for second order kinetics. The effective absorption cross section is reduced in part by the broad spectral width of the pump source relative to the pressure broadened lineshape. Spin orbit relaxation between the pumped and upper laser levels is sufficiently fast at 550Torr of methane to prevent bottlenecking at all but the highest intensities. Comparison of laser characteristics with a quasi-two level analytic model suggests performance near the ideal steady-state limit, with the exception of modest mode matching. [ABSTRACT FROM AUTHOR] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TUNABLE lasers KW - RUBIDIUM KW - PHOTONS KW - EXCITED state chemistry KW - CROSS sections (Nuclear physics) KW - ABSORPTION spectra KW - METHANE KW - OPTICAL pumping KW - Bleaching KW - Diode Pumped Alkali Laser KW - Efficiency KW - Threshold N1 - Accession Number: 53408604; Sulham, Clifford V. 1 Perram, Glen P. 1; Email Address: glen.perram@afit.edu Wilkinson, Michael P. 2 Hostutler, David A. 2; Affiliation: 1: Department of Engineering Physics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433-7765, United States 2: Directed Energy Directorate, Air Force Research Laboratory, 3550 Aberdeen Ave SE, Kirtland Air Force Base, New Mexico 87117, United States; Source Info: Nov2010, Vol. 283 Issue 21, p4328; Subject Term: TUNABLE lasers; Subject Term: RUBIDIUM; Subject Term: PHOTONS; Subject Term: EXCITED state chemistry; Subject Term: CROSS sections (Nuclear physics); Subject Term: ABSORPTION spectra; Subject Term: METHANE; Subject Term: OPTICAL pumping; Author-Supplied Keyword: Bleaching; Author-Supplied Keyword: Diode Pumped Alkali Laser; Author-Supplied Keyword: Efficiency; Author-Supplied Keyword: Threshold; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.optcom.2010.06.038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53408604&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Konkova, T. AU - Mironov, S. AU - Korznikov, A. AU - Semiatin, S.L. T1 - Microstructure instability in cryogenically deformed copper JO - Scripta Materialia JF - Scripta Materialia Y1 - 2010/11// VL - 63 IS - 9 M3 - Article SP - 921 EP - 924 SN - 13596462 AB - High-resolution electron backscatter diffraction was employed to establish the microstructural stability in severely cryodeformed copper during long-term static storage at room temperature. The material was shown to exhibit grain growth including some aspects of abnormal grain growth. [ABSTRACT FROM AUTHOR] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Microstructure KW - DEFORMATIONS (Mechanics) KW - COPPER KW - ELECTRONS -- Backscattering KW - ELECTRON diffraction KW - LOW temperature engineering KW - Copper KW - Cryogenic deformation KW - Electron backscatter diffraction KW - Nanocrystalline microstructure N1 - Accession Number: 53308431; Konkova, T. 1 Mironov, S. 1,2; Email Address: smironov@material.tohoku.ac.jp Korznikov, A. 1 Semiatin, S.L. 3; Affiliation: 1: Institute for Metals Superplasticity Problems, Russian Academy of Science, 39 Khalturin Str., Ufa 450001, Russia 2: Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Sendai 980-8579, Japan 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLM, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Nov2010, Vol. 63 Issue 9, p921; Subject Term: METALS -- Microstructure; Subject Term: DEFORMATIONS (Mechanics); Subject Term: COPPER; Subject Term: ELECTRONS -- Backscattering; Subject Term: ELECTRON diffraction; Subject Term: LOW temperature engineering; Author-Supplied Keyword: Copper; Author-Supplied Keyword: Cryogenic deformation; Author-Supplied Keyword: Electron backscatter diffraction; Author-Supplied Keyword: Nanocrystalline microstructure; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2010.07.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53308431&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dribusch, Christoph AU - Missoum, Samy AU - Beran, Philip T1 - A multifidelity approach for the construction of explicit decision boundaries: application to aeroelasticity. JO - Structural & Multidisciplinary Optimization JF - Structural & Multidisciplinary Optimization Y1 - 2010/11// VL - 42 IS - 5 M3 - Article SP - 693 EP - 705 SN - 1615147X AB - This paper presents a multifidelity approach for the construction of explicit decision boundaries (constraints or limit-state functions) using support vector machines. A lower fidelity model is used to select specific samples to construct the decision boundary corresponding to a higher fidelity model. This selection is based on two schemes. The first scheme selects samples within an envelope constructed from the lower fidelity model. The second technique is based on the detection of regions of inconsistencies between the lower and the higher fidelity decision boundaries. The approach is applied to analytical examples as well as an aeroelasticity problem for the construction of a nonlinear flutter boundary. [ABSTRACT FROM AUTHOR] AB - Copyright of Structural & Multidisciplinary Optimization is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - SUPPORT vector machines KW - BOUNDARY layer (Aerodynamics) KW - CONSTRAINTS (Physics) KW - INCONSISTENCY (Logic) KW - FINITE element method KW - Flutter boundary KW - Multifidelity KW - Support vector machines N1 - Accession Number: 53556057; Dribusch, Christoph 1 Missoum, Samy 1; Email Address: smissoum@email.arizona.edu Beran, Philip 2; Affiliation: 1: Aerospace and Mechanical Engineering Department, The University of Arizona, Tucson 85721 USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Building 146, 2210 Eighth Street Dayton 45433 USA; Source Info: Nov2010, Vol. 42 Issue 5, p693; Subject Term: AEROELASTICITY; Subject Term: SUPPORT vector machines; Subject Term: BOUNDARY layer (Aerodynamics); Subject Term: CONSTRAINTS (Physics); Subject Term: INCONSISTENCY (Logic); Subject Term: FINITE element method; Author-Supplied Keyword: Flutter boundary; Author-Supplied Keyword: Multifidelity; Author-Supplied Keyword: Support vector machines; Number of Pages: 13p; Illustrations: 1 Chart, 1 Graph; Document Type: Article L3 - 10.1007/s00158-010-0516-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53556057&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Trickler, William J. AU - Lantz, Susan M. AU - Murdock, Richard C. AU - Schrand, Amanda M. AU - Robinson, Bonnie L. AU - Newport, Glenn D. AU - Schlager, John J. AU - Oldenburg, Steven J. AU - Paule, Merle G. AU - Slikker, William AU - Hussain, Saber M. AU - Ali, Syed F. T1 - Silver Nanoparticle Induced Blood-Brain Barrier Inflammation and Increased Permeability in Primary Rat Brain Microvessel Endothelial Cells. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 2010/11// VL - 118 IS - 1 M3 - Article SP - 160 EP - 170 SN - 10966080 AB - The current report examines the interactions of silver nanoparticles (Ag-NPs) with the cerebral microvasculature to identify the involvement of proinflammatory mediators that can increase blood-brain barrier (BBB) permeability. Primary rat brain microvessel endothelial cells (rBMEC) were isolated from adult Sprague-Dawley rats for an in vitro BBB model. The Ag-NPs were characterized by transmission electron microscopy (TEM), dynamic light scattering, and laser Doppler velocimetry. The cellular accumulation, cytotoxicity (6.25–50 μg/cm3) and potential proinflammatory mediators (interleukin [IL]-1β, IL-2, tumor necrosis factor [TNF] α, and prostaglandin E2 [PGE2]) of Ag-NPs (25, 40, or 80 nm) were determined spectrophotometrically, cell proliferation assay (2,3-bis[2-methoxy-4-nitro-5-sulfophenyl]-2H-tetrazolium-5-carboxanilide) and ELISA. The results show Ag-NPs–induced cytotoxic responses at lower concentrations for 25 and 40 nm when compared with 80-nm Ag-NPs. The proinflammatory responses in this study demonstrate both Ag-NPs size and time-dependent profiles, with IL-1B preceding both TNF and PGE2 for 25 nm. However, larger Ag-NPs (40 and 80 nm) induced significant TNF responses at 4 and 8 h, with no observable PGE2 response. The increased fluorescein transport observed in this study clearly indicates size-dependent increases in BBB permeability correlated with the severity of immunotoxicity. Together, these data clearly demonstrate that larger Ag-NPs (80 nm) had significantly less effect on rBMEC, whereas the smaller particles induced significant effects on all the end points at lower concentrations and/or shorter times. Further, this study suggests that Ag-NPs may interact with the cerebral microvasculature producing a proinflammatory cascade, if left unchecked; these events may further induce brain inflammation and neurotoxicity. [ABSTRACT FROM AUTHOR] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLOIDAL silver KW - NANOPARTICLES KW - BLOOD-brain barrier KW - INFLAMMATION KW - RATS as laboratory animals KW - NEUROTOXICOLOGY KW - BLOOD-vessels -- Permeability KW - BRAIN -- Blood-vessels KW - blood-brain barrier KW - neuroinflamation KW - neurotoxicity KW - rat brain microvessel endothelial cells KW - silver nanoparticles N1 - Accession Number: 54567088; Trickler, William J. 1 Lantz, Susan M. 1 Murdock, Richard C. 2 Schrand, Amanda M. 2 Robinson, Bonnie L. 1 Newport, Glenn D. 1 Schlager, John J. 2 Oldenburg, Steven J. 3 Paule, Merle G. 1 Slikker, William 1 Hussain, Saber M. 2 Ali, Syed F. 1; Affiliation: 1: Neurochemistry Laboratory, Division of Neurotoxicology, National Center of Toxicological Research/Food and Drug Administration, Jefferson, Arkansas 72079 2: Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 3: NanoComposix, Inc., San Diego, California 92111; Source Info: Nov2010, Vol. 118 Issue 1, p160; Subject Term: COLLOIDAL silver; Subject Term: NANOPARTICLES; Subject Term: BLOOD-brain barrier; Subject Term: INFLAMMATION; Subject Term: RATS as laboratory animals; Subject Term: NEUROTOXICOLOGY; Subject Term: BLOOD-vessels -- Permeability; Subject Term: BRAIN -- Blood-vessels; Author-Supplied Keyword: blood-brain barrier; Author-Supplied Keyword: neuroinflamation; Author-Supplied Keyword: neurotoxicity; Author-Supplied Keyword: rat brain microvessel endothelial cells; Author-Supplied Keyword: silver nanoparticles; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 11p; Illustrations: 1 Color Photograph, 2 Charts, 7 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54567088&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - LAWRENCE, DAVID T1 - Heroic Act of Witness: Dexter Filkins' Forever War. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2010/11// VL - 22 IS - 1 M3 - Literary Criticism SP - 15 EP - 20 PB - US Air Force Academy English Department SN - 10466967 AB - A literary criticism of the book "The Forever War," by Dexter Filkins is presented. It describes the characteristics of the soldiers and marines that are featured in the book and examined their symbolic significance. According to the author, the book demonstrates Filkin's extraordinary power of observation. An overview of the story is also given. KW - CRITICISM KW - MILITARY personnel in literature KW - CHARACTERS & characteristics in literature KW - FILKINS, Dexter KW - FOREVER War, The (Book) N1 - Accession Number: 53956446; LAWRENCE, DAVID 1,2; Affiliation: 1: English literature doctoral candidate, UC Santa Barbara 2: United States Air Force Academy; Source Info: 2010, Vol. 22 Issue 1, p15; Subject Term: CRITICISM; Subject Term: MILITARY personnel in literature; Subject Term: CHARACTERS & characteristics in literature; Reviews & Products: FOREVER War, The (Book); People: FILKINS, Dexter; Number of Pages: 6p; Document Type: Literary Criticism UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53956446&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - CALHOUN, BYRON T1 - Tobias Wolff's Search for Heroism. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2010/11// VL - 22 IS - 1 M3 - Literary Criticism SP - 21 EP - 28 PB - US Air Force Academy English Department SN - 10466967 AB - The article traces the efforts of Tobias Wolff, author of the memoir "In Pharaoh's Army," to search for heroism. In his memoir, Wolff admits that he wanted to be a hero in the fields of military and literature. An overview of his military and literary career is presented, along with the actions he has taken in search for heroism. According to the author, Wolff wrote his memoir for therapeutic reasons and to honor those people who have died in Vietnam. KW - AUTHORS KW - MILITARY personnel KW - COURAGE KW - HEROES KW - WOLFF, Tobias, 1945- KW - IN Pharaoh's Army (Book) N1 - Accession Number: 53956447; CALHOUN, BYRON 1; Affiliation: 1: Assistant Professor of English, United States Air Force Academy; Source Info: 2010, Vol. 22 Issue 1, p21; Subject Term: AUTHORS; Subject Term: MILITARY personnel; Subject Term: COURAGE; Subject Term: HEROES; Reviews & Products: IN Pharaoh's Army (Book); NAICS/Industry Codes: 711510 Independent Artists, Writers, and Performers; NAICS/Industry Codes: 711513 Independent writers and authors; People: WOLFF, Tobias, 1945-; Number of Pages: 8p; Document Type: Literary Criticism UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53956447&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - GOOLSBY, JESSE T1 - Stepfather. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2010/11// VL - 22 IS - 1 M3 - Short Story SP - 50 EP - 52 PB - US Air Force Academy English Department SN - 10466967 AB - The short story "Stepfather," by Jesse Goolsby is presented. KW - SHORT story (Literary form) KW - GOOLSBY, Jesse KW - STEPFATHER (Short story) N1 - Accession Number: 53956450; GOOLSBY, JESSE 1; Affiliation: 1: United States Air Force Academy; Source Info: 2010, Vol. 22 Issue 1, p50; Subject Term: SHORT story (Literary form); Reviews & Products: STEPFATHER (Short story); People: GOOLSBY, Jesse; Number of Pages: 3p; Document Type: Short Story UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53956450&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - BISHOP, JAMES GLEASON T1 - Sitting on the Veterans' Memorial at the Corner of Main Street and Route 2, July 3,1972, Not Thinking About Walter Cronkite. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2010/11// VL - 22 IS - 1 M3 - Poem SP - 53 EP - 54 PB - US Air Force Academy English Department SN - 10466967 AB - The poem "Sitting on the Veterans' Memorial at the Corner of Main Street and Route 22, July 3, 1972, Not Thinking About Walter Cronkite," by James Gleason Bishop is presented. First Line: Someone was lying. Last Line: and I suspected Phillip. KW - BISHOP, James Gleason KW - SITTING on the Veterans' Memorial at the Corner of Main Street & Route 22, July 3, 1972, Not Thinking About Walter Cronkite (Poem) N1 - Accession Number: 53956451; BISHOP, JAMES GLEASON 1; Affiliation: 1: assistant professor of English, United States Air Force Academy; Source Info: 2010, Vol. 22 Issue 1, p53; Reviews & Products: SITTING on the Veterans' Memorial at the Corner of Main Street & Route 22, July 3, 1972, Not Thinking About Walter Cronkite (Poem); People: BISHOP, James Gleason; Number of Pages: 2p; Document Type: Poem UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53956451&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - BISHOP, JAMES GLEASON T1 - Goodman Blodgett. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2010/11// VL - 22 IS - 1 M3 - Poem SP - 55 EP - 55 PB - US Air Force Academy English Department SN - 10466967 AB - The poem "Goodman Blodgett," by James Gleason Bishop is presented. First Line: Hot summer morning. I shot; Last Line: We need so many rescues. KW - BISHOP, James Gleason KW - GOODMAN Blodgett (Poem) N1 - Accession Number: 53956452; BISHOP, JAMES GLEASON 1; Affiliation: 1: assistant professor of English, United States Air Force Academy; Source Info: 2010, Vol. 22 Issue 1, p55; Reviews & Products: GOODMAN Blodgett (Poem); People: BISHOP, James Gleason; Number of Pages: 1p; Document Type: Poem UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53956452&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - BISHOP, JAMES GLEASON T1 - While Guppies Bay at the Moon. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2010/11// VL - 22 IS - 1 M3 - Poem SP - 56 EP - 56 PB - US Air Force Academy English Department SN - 10466967 AB - The poem "While Guppies Bay at the Moon," by James Gleason Bishop is presented. First Line: Crouched in a gray doorway, the sold-; Last Line: plants, trying to blink--is baying at the moon. KW - BISHOP, James Gleason KW - WHILE Guppies Bay at the Moon (Poem) N1 - Accession Number: 53956453; BISHOP, JAMES GLEASON 1; Affiliation: 1: Assistant professor of English, United States Air Force Academy; Source Info: 2010, Vol. 22 Issue 1, p56; Reviews & Products: WHILE Guppies Bay at the Moon (Poem); People: BISHOP, James Gleason; Number of Pages: 1p; Document Type: Poem UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53956453&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - VARGISH, THOMAS T1 - Conrad's "The Secret Sharer": A Private Ethics of Leadership. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2010/11// VL - 22 IS - 1 M3 - Literary Criticism SP - 107 EP - 118 PB - US Air Force Academy English Department SN - 10466967 AB - A literary criticism of the book "The Secret Sharer," by Joseph Conrad is presented. It discusses the tradeoffs and conflicts between professional and personal life when exercising practical authority and in relation to leadership. It explains the functions of leadership, along with how it was depicted in the book. An overview of the story is also given. KW - CRITICISM KW - LEADERSHIP in literature KW - AUTHORITY KW - CONRAD, Joseph, 1857-1924 KW - SECRET Sharers, The (Book) N1 - Accession Number: 53956458; VARGISH, THOMAS 1; Affiliation: 1: United States Air Force Academy; Source Info: 2010, Vol. 22 Issue 1, p107; Subject Term: CRITICISM; Subject Term: LEADERSHIP in literature; Subject Term: AUTHORITY; Reviews & Products: SECRET Sharers, The (Book); People: CONRAD, Joseph, 1857-1924; Number of Pages: 12p; Document Type: Literary Criticism UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53956458&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - MOAD II, JAMES A. T1 - Our Ghost. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2010/11// VL - 22 IS - 1 M3 - Short Story SP - 247 EP - 252 PB - US Air Force Academy English Department SN - 10466967 AB - The short story "Our Ghost," by James A. Moad II is presented. KW - SHORT story (Literary form) KW - MOAD, James A. KW - OUR Ghost (Short story) N1 - Accession Number: 53956477; MOAD II, JAMES A. 1; Affiliation: 1: Assistant Professor of English, United States Air Force Academy in Colorado Springs, Colorado; Source Info: 2010, Vol. 22 Issue 1, p247; Subject Term: SHORT story (Literary form); Reviews & Products: OUR Ghost (Short story); People: MOAD, James A.; Number of Pages: 6p; Document Type: Short Story UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53956477&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - GRESHAM, ROSS T1 - The Memory Hole is Us. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2010/11// VL - 22 IS - 1 M3 - Opinion SP - 271 EP - 280 PB - US Air Force Academy English Department SN - 10466967 AB - The author discusses Jon Krakauer's "Where Men Win Glory: The Odyssey of Pat Tillman," a recount of the life, career and death of Private Pat Tillman. Tillman gave up his career as a professional football player to enlist in the U.S. Army. The author comments on the structure of the book, and describes it as difficult to read. He also criticizes Kraukauer's decision to choose such title for the book. KW - FOOTBALL players KW - MILITARY personnel -- United States KW - BOOKS -- Evaluation KW - TILLMAN, Pat, 1976-2004 KW - KRAKAUER, Jon, 1954- KW - WHERE Men Win Glory: The Odyssey of Pat Tillman (Book) N1 - Accession Number: 53956484; GRESHAM, ROSS 1; Affiliation: 1: Associate Professor, United States Air Force Academy; Source Info: 2010, Vol. 22 Issue 1, p271; Subject Term: FOOTBALL players; Subject Term: MILITARY personnel -- United States; Subject Term: BOOKS -- Evaluation; Reviews & Products: WHERE Men Win Glory: The Odyssey of Pat Tillman (Book); NAICS/Industry Codes: 414420 Book, periodical and newspaper merchant wholesalers; NAICS/Industry Codes: 424920 Book, Periodical, and Newspaper Merchant Wholesalers; NAICS/Industry Codes: 451211 Book Stores; NAICS/Industry Codes: 451310 Book stores and news dealers; People: TILLMAN, Pat, 1976-2004; People: KRAKAUER, Jon, 1954-; Number of Pages: 10p; Document Type: Opinion UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53956484&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - BISHOP, JAMES GLEASON T1 - "We Should Know These People We Bury in the Earth": Brian Turner's Radical Message. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2010/11// VL - 22 IS - 1 M3 - Book Review SP - 299 EP - 306 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews two poetry books by Brian Turner, including "Here, Bullet" and "Phantom Noise." KW - POETRY collections KW - TURNER, Brian KW - HERE, Bullet (Book) KW - PHANTOM Noise (Book) N1 - Accession Number: 53956487; BISHOP, JAMES GLEASON 1; Affiliation: 1: Assistant Professor of English, United States Air Force Academy; Source Info: 2010, Vol. 22 Issue 1, p299; Subject Term: POETRY collections; Reviews & Products: HERE, Bullet (Book); Reviews & Products: PHANTOM Noise (Book); People: TURNER, Brian; Number of Pages: 8p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53956487&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - DONOVAN, JOHN T1 - The War on Terror and American Popular Culture. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2010/11// VL - 22 IS - 1 M3 - Book Review SP - 319 EP - 322 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "The War on Terror and American Popular Culture," edited by Andrew Schopp and Matthew Hill. KW - COUNTERTERRORISM KW - NONFICTION KW - SCHOPP, Andrew KW - HILL, Matthew KW - WAR on Terror & American Popular Culture, The (Book) N1 - Accession Number: 53956491; DONOVAN, JOHN 1; Affiliation: 1: UNITED STATES AIR FORCE ACADEMY; Source Info: 2010, Vol. 22 Issue 1, p319; Subject Term: COUNTERTERRORISM; Subject Term: NONFICTION; Reviews & Products: WAR on Terror & American Popular Culture, The (Book); People: SCHOPP, Andrew; People: HILL, Matthew; Number of Pages: 4p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53956491&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - ZIMMERMANN, JASON T1 - The Marne, 1914: The Opening of World War I and the Battle that Changed the World. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2010/11// VL - 22 IS - 1 M3 - Book Review SP - 327 EP - 328 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "The Marne, 1914: The Opening of World War I and the Battle That Changed the World," by Holger H. Herwig. KW - WORLD War, 1914-1918 KW - NONFICTION KW - HERWIG, Holger H. KW - MARNE 1914: The Opening of World War I & the Battle That Changed the World, The (Book) N1 - Accession Number: 53956493; ZIMMERMANN, JASON 1; Affiliation: 1: United States Air Force Academy; Source Info: 2010, Vol. 22 Issue 1, p327; Subject Term: WORLD War, 1914-1918; Subject Term: NONFICTION; Reviews & Products: MARNE 1914: The Opening of World War I & the Battle That Changed the World, The (Book); People: HERWIG, Holger H.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53956493&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - JONES, BENJAMIN F. T1 - Valley of Death: The Tragedy at Dien Bien Phu That Led America into the Vietnam War. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2010/11// VL - 22 IS - 1 M3 - Book Review SP - 329 EP - 331 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "Valley of Death: The Tragedy at Dien Bien Phu That Led America Into the Vietnam War," by Ted Morgan. KW - VIETNAM War, 1961-1975 KW - NONFICTION KW - MORGAN, Ted, 1932- KW - VALLEY of Death: The Tragedy at Dien Bien Phu That Led America Into the Vietnam War (Book) N1 - Accession Number: 53956494; JONES, BENJAMIN F. 1; Affiliation: 1: United States Air Force Academy; Source Info: 2010, Vol. 22 Issue 1, p329; Subject Term: VIETNAM War, 1961-1975; Subject Term: NONFICTION; Reviews & Products: VALLEY of Death: The Tragedy at Dien Bien Phu That Led America Into the Vietnam War (Book); People: MORGAN, Ted, 1932-; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53956494&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - BALDWIN, MIRANDA S. T1 - Citizens of London: The Americans Who Stood with Britain in its Darkest, Finest Hour. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2010/11// VL - 22 IS - 1 M3 - Book Review SP - 332 EP - 333 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "Citizens of London: The Americans Who Stood With Britain in Its Darkest, Finest Hour," by Lynne Olson. KW - INTERNATIONAL relations KW - NONFICTION KW - OLSON, Lynne KW - CITIZENS of London: The Americans Who Stood With Britain in Its Darkest, Finest Hour (Book) N1 - Accession Number: 53956495; BALDWIN, MIRANDA S. 1; Affiliation: 1: United States Air Force Academy; Source Info: 2010, Vol. 22 Issue 1, p332; Subject Term: INTERNATIONAL relations; Subject Term: NONFICTION; Reviews & Products: CITIZENS of London: The Americans Who Stood With Britain in Its Darkest, Finest Hour (Book); NAICS/Industry Codes: 911410 Foreign affairs; NAICS/Industry Codes: 928120 International Affairs; People: OLSON, Lynne; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53956495&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - ABBATIELLO, JOHN J. T1 - No Less Than Victory. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2010/11// VL - 22 IS - 1 M3 - Book Review SP - 334 EP - 334 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "No Less Than Victory," by Jeff Shaara. KW - WAR KW - NONFICTION KW - SHAARA, Jeff KW - NO Less Than Victory (Book) N1 - Accession Number: 53956496; ABBATIELLO, JOHN J. 1; Affiliation: 1: United States Air Force Academy; Source Info: 2010, Vol. 22 Issue 1, p334; Subject Term: WAR; Subject Term: NONFICTION; Reviews & Products: NO Less Than Victory (Book); People: SHAARA, Jeff; Number of Pages: 1p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53956496&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - MOAD, JAMES A. T1 - Warrior Writers: Re-Making Sense. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2010/11// VL - 22 IS - 1 M3 - Book Review SP - 335 EP - 337 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "Warrior Writers: Re-Making Sense," edited by Lovella Calica. KW - IRAQ War, 2003-2011 KW - NONFICTION KW - CALICA, Lovella KW - WARRIOR Writers: Re-Making Sense (Book) N1 - Accession Number: 53956497; MOAD, JAMES A. 1; Affiliation: 1: United States Air Force Academy; Source Info: 2010, Vol. 22 Issue 1, p335; Subject Term: IRAQ War, 2003-2011; Subject Term: NONFICTION; Reviews & Products: WARRIOR Writers: Re-Making Sense (Book); People: CALICA, Lovella; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53956497&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - PASQUANTONIO, SONJA K. T1 - Clamor. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2010/11// VL - 22 IS - 1 M3 - Book Review SP - 338 EP - 340 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "Clamor," by Elyse Fenton. KW - POETRY (Literary form) KW - POETRY collections KW - FENTON, Elyse KW - CLAMOR (Book) N1 - Accession Number: 53956498; PASQUANTONIO, SONJA K. 1; Affiliation: 1: United States Air Force Academy; Source Info: 2010, Vol. 22 Issue 1, p338; Subject Term: POETRY (Literary form); Subject Term: POETRY collections; Reviews & Products: CLAMOR (Book); People: FENTON, Elyse; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53956498&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Levandier, Dale J. AU - Chiu, Yu-Hui T1 - A guided-ion beam study of the reactions of Xe+ and Xe2+ with NH3 at hyperthermal collision energies. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2010/10/21/ VL - 133 IS - 15 M3 - Article SP - 154304 PB - American Institute of Physics SN - 00219606 AB - We have measured the absolute cross sections for reactions of Xe+ and Xe2+ with NH3 at collision energies in the range from near-thermal to ∼34 and ∼69 eV, respectively. For Xe+, the cross section for charge transfer, the only exothermic channel, decreases from ∼200 Å2 below 0.1 eV to ∼12 Å2 at the highest energies studied. The production of NH3+ is the only channel observed below 5 eV, above which a small amount of NH2+ is also formed. In Xe2+ reactions, the main products observed are NH3+ and NH2+. The charge transfer cross section decreases monotonically from ∼80 to ∼6 Å2 over the studied energy range. The NH2+ cross section is similar to the charge transfer cross section at the lowest energies, and exhibits a second component above 0.4 eV, with a maximum of 65 Å2 at 0.7 eV, above which the cross section decreases to ∼30 Å2 at the highest energies studied. At energies above 10 eV, a small amount of NH+ is also observed in Xe2+ collisions. Product recoil velocity distributions were determined at selected collision energies, using guided-ion beam time-of-flight methods. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ION bombardment KW - XENON KW - COLLISIONS (Nuclear physics) KW - CHEMICAL reactions KW - CHARGE transfer KW - ION exchange (Chemistry) KW - ELECTRON donor-acceptor complexes N1 - Accession Number: 54553266; Levandier, Dale J. 1 Chiu, Yu-Hui 2; Affiliation: 1: Boston College Institute for Scientific Research, Chestnut Hill, Massachusetts 02159, 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 02452,; Source Info: 10/21/2010, Vol. 133 Issue 15, p154304; Subject Term: ION bombardment; Subject Term: XENON; Subject Term: COLLISIONS (Nuclear physics); Subject Term: CHEMICAL reactions; Subject Term: CHARGE transfer; Subject Term: ION exchange (Chemistry); Subject Term: ELECTRON donor-acceptor complexes; Number of Pages: 8p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.3488055 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54553266&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bopp, Joseph C. AU - Miller, Thomas M. AU - Friedman, Jeffrey F. AU - Shuman, Nicholas S. AU - Viggiano, A. A. T1 - Electron attachment to propargyl chloride, 305-540 K. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2010/10/21/ VL - 133 IS - 15 M3 - Article SP - 154306 PB - American Institute of Physics SN - 00219606 AB - Electron attachment to propargyl chloride (HC≡C-CH2Cl) was studied in a flowing-afterglow Langmuir-probe apparatus from 305 to 540 K. The sole ion product in this temperature range is Cl-. Electron attachment is very inefficient, requiring correction for a competing process of electron recombination with molecular cations produced in reaction between Ar+ and propargyl chloride and subsequent ion-molecule reactions. The electron attachment rate coefficient was measured to be 1.6×10-10 cm3 s-1 at 305 K and increased to 1.1×10-9 cm3 s-1 at 540 K. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHLOROHYDROCARBONS KW - ELECTRONS KW - LANGMUIR probes KW - ION recombination KW - CATIONS KW - ARGON KW - CHEMICAL reactions KW - TEMPERATURE effect N1 - Accession Number: 54553252; Bopp, Joseph C. 1 Miller, Thomas M. 1 Friedman, Jeffrey F. 1 Shuman, Nicholas S. 1 Viggiano, A. A. 1; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, 29 Randolph Road, Hanscom Air Force Base, Massachusetts 01731-3010,; Source Info: 10/21/2010, Vol. 133 Issue 15, p154306; Subject Term: CHLOROHYDROCARBONS; Subject Term: ELECTRONS; Subject Term: LANGMUIR probes; Subject Term: ION recombination; Subject Term: CATIONS; Subject Term: ARGON; Subject Term: CHEMICAL reactions; Subject Term: TEMPERATURE effect; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 4p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.3505144 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54553252&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bei, H. AU - Yang, Y. AU - Viswanathan, G.B. AU - Rawn, C.J. AU - George, E.P. AU - Tiley, J. AU - Chang, Y.A. T1 - Formation, stability and crystal structure of the σ phase in Mo–Re–Si alloys JO - Acta Materialia JF - Acta Materialia Y1 - 2010/10/15/ VL - 58 IS - 18 M3 - Article SP - 6027 EP - 6034 SN - 13596454 AB - Abstract: The formation, stability and crystal structure of the σ phase in Mo–Re–Si alloys were investigated. Guided by thermodynamic calculations, six critically selected alloys were arc melted and annealed at 1600°C for 150h. Their as-cast and annealed microstructures, including phase fractions and distributions, the compositions of the constituent phases and the crystal structure of the σ phase were analyzed by thermodynamic modeling coupled with experimental characterization by scanning electron microscopy, electron probe microanalysis, X-ray diffraction and transmission electron microscopy. Two key findings resulted from this work. One is the large homogeneity range of the σ phase region, extending from binary Mo–Re to ternary Mo–Re–Si. The other is the formation of a σ phase in Mo-rich alloys either through the peritectic reaction of liquid+Moss → σ or primary solidification. These findings are important in understanding the effects of Re on the microstructure and providing guidance on the design of Mo–Re–Si alloys. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON alloys KW - METAL crystals KW - MOLYBDENUM alloys KW - THERMODYNAMICS KW - SCANNING electron microscopy KW - ELECTRON probe microanalysis KW - X-ray diffraction KW - TRANSMISSION electron microscopy KW - σ phase KW - Mo alloys KW - Phase diagram KW - Silicides KW - Thermodynamics N1 - Accession Number: 53721085; Bei, H. 1; Email Address: beih@ornl.gov Yang, Y. 2; Email Address: ying.yang@computherm.com Viswanathan, G.B. 3 Rawn, C.J. 1,4 George, E.P. 1,4 Tiley, J. 3 Chang, Y.A. 2,5; Affiliation: 1: Oak Ridge National Laboratory, Materials Science and Technology Division, Oak Ridge, TN 37831, USA 2: CompuTherm LLC, Madison, WI 53719, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 4: University of Tennessee, Department of Materials Science and Engineering, Knoxville, TN 37996, USA 5: University of Wisconsin-Madison, Madison, WI 53705, USA; Source Info: Oct2010, Vol. 58 Issue 18, p6027; Subject Term: SILICON alloys; Subject Term: METAL crystals; Subject Term: MOLYBDENUM alloys; Subject Term: THERMODYNAMICS; Subject Term: SCANNING electron microscopy; Subject Term: ELECTRON probe microanalysis; Subject Term: X-ray diffraction; Subject Term: TRANSMISSION electron microscopy; Author-Supplied Keyword: σ phase; Author-Supplied Keyword: Mo alloys; Author-Supplied Keyword: Phase diagram; Author-Supplied Keyword: Silicides; Author-Supplied Keyword: Thermodynamics; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.actamat.2010.07.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53721085&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucas, M. S. AU - Muñoz, J. A. AU - Mauger, L. AU - Li, Chen W. AU - Sheets, A. O. AU - Turgut, Z. AU - Horwath, J. AU - Abernathy, D. L. AU - Stone, M. B. AU - Delaire, O. AU - Xiao, Yuming AU - Fultz, B. T1 - Publisher's Note: 'Effects of chemical composition and B2 order on phonons in bcc Fe-Co alloys' [J. Appl. Phys. 108, 023519 (2010)]. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/10/15/ VL - 108 IS - 7 M3 - Correction notice SP - 079902 PB - American Institute of Physics SN - 00218979 AB - A correction to the article "Effects of Chemical Composition and B2 Order on Phonons in bcc Fe-Co Alloys," published online on July 29, 2010 is presented. KW - PHONONS KW - ALLOYS N1 - Accession Number: 54470723; Lucas, M. S. 1,2; Email Address: matthew.steven.lucas@gmail.com Muñoz, J. A. 3 Mauger, L. 3 Li, Chen W. 3 Sheets, A. O. 1 Turgut, Z. 1 Horwath, J. 1 Abernathy, D. L. 4 Stone, M. B. 4 Delaire, O. 4 Xiao, Yuming 5 Fultz, B. 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 2: UTC Inc., 1270 North Fairfield Road, Dayton, Ohio 45432, USA 3: W. M. Keck Laboratory, California Institute of Technology, 138-78, Pasadena, California 91125, USA 4: Oak Ridge National Laboratory, 1, Bethel Valley Road, Oak Ridge, Tennessee 37831, USA 5: HPCAT, Geophysical Laboratory, Carnegie Institution of Washington, 9700 South Cass Ave., Bldg. 434E, Argonne, IL 60439, USA; Source Info: Oct2010, Vol. 108 Issue 7, p079902; Subject Term: PHONONS; Subject Term: ALLOYS; Number of Pages: 1p; Document Type: Correction notice L3 - 10.1063/1.3484430 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54470723&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Phillips, David M. AU - Baur, Jeffery W. T1 - A Granular Core for Self-healing, Variable Modulus Sandwich Composites. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2010/10/15/ VL - 44 IS - 22 M3 - Article SP - 2527 EP - 2545 SN - 00219983 AB - Sandwich composites that exhibit complete mechanical and geometric healing when subjected to three-point bending are realized using a novel, pressure-triggered granular core. The sandwich composites are constructed with fiberglass-reinforced, epoxy face sheets and a granular core consisting of noncohesive, glass microballoons. By controlling the granular core hydrostatic compression in the range of 0—0.083 MPa, the observed shear modulus of the core spanned nearly three orders of magnitude. Core compression is achieved by evacuating the interior of the sandwich structure and allowing the atmospheric pressure acting on the sandwich to compress the core. Although the compressed cores typically begin to yield near 1% shear strain, the degenerate nature of the core allows for complete recovery of the modulus even after a large strain. By exploiting the inherent stiffness of the sandwich skin and the tunable modulus of the granular core, these sandwich composites are able to undergo healing cycles and completely recover both their mechanical and geometric properties. [ABSTRACT FROM PUBLISHER] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - adaptive structures KW - microballoons KW - morphing KW - sandwich composites KW - self-healing N1 - Accession Number: 54489111; Phillips, David M. 1 Baur, Jeffery W. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate AFRL/RX Wright-Patterson Air Force Base, OH 45433, USA, Universal Technology Corporation, Dayton, OH 45432, USA, david.phillips@wpafb.af.mil 2: Air Force Research Laboratory, Materials and Manufacturing Directorate AFRL/RX Wright-Patterson Air Force Base, OH 45433, USA; Source Info: 10/15/2010, Vol. 44 Issue 22, p2527; Author-Supplied Keyword: adaptive structures; Author-Supplied Keyword: microballoons; Author-Supplied Keyword: morphing; Author-Supplied Keyword: sandwich composites; Author-Supplied Keyword: self-healing; Number of Pages: 19p; Document Type: Article; Full Text Word Count: 6608 L3 - 10.1177/0021998310371531 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54489111&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kyung Min Lee AU - Hilmar Koerner AU - Richard A. Vaia AU - Timothy J. Bunning AU - Timothy J. White T1 - Relationship between the Photomechanical Response and the Thermomechanical Properties of Azobenzene Liquid Crystalline Polymer Networks. JO - Macromolecules JF - Macromolecules Y1 - 2010/10/12/ VL - 43 IS - 19 M3 - Article SP - 8185 EP - 8190 SN - 00249297 AB - We report on the influence of cross-link density of azobenzene-containing liquid crystal polymer networks (azo-LCNs) on the thermomechanical properties and the laser-directed bending of cantilevers consisting of these materials. Cross-link density of azo-LCN was increased by adjusting the length of photocuring from 1 to 120 min. The storage modulus (E′), loss modulus (E′′), and glass transition temperature (Tg) of the azo-LCNs increase with cross-link density. Increasing the cross-link density of the polydomain azo-LCN reduces the magnitude of the bending angle of the cantilevers. The relationship between the thermomechanical and photomechanical properties of the polydomain azo-LCN reported here is further elucidated in the examination of laser-directed bending over a wide range of temperature. The temperature dependence of the equilibrium photodriven bending angle is shown to be strongly related to the temperature dependence of the storage modulus for a given azo-LCN sample. Normalizing the temperature dependence of the photomechanical response of the azo-LCN cantilevers by the Tgprovides a master curve that can be used to tailor the photomechanical response. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOMECHANICAL processes KW - POLYMER liquid crystals KW - AZO compounds KW - CANTILEVERS KW - GLASS transition temperature KW - POLYMERS -- Thermal properties KW - POLYMERS -- Mechanical properties KW - POLYMER networks KW - CROSSLINKING (Polymerization) N1 - Accession Number: 54319941; Kyung Min Lee 1 Hilmar Koerner 1 Richard A. Vaia 1 Timothy J. Bunning 1 Timothy J. White 1; Affiliation: 1: †Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45332; Source Info: Oct2010, Vol. 43 Issue 19, p8185; Subject Term: PHOTOMECHANICAL processes; Subject Term: POLYMER liquid crystals; Subject Term: AZO compounds; Subject Term: CANTILEVERS; Subject Term: GLASS transition temperature; Subject Term: POLYMERS -- Thermal properties; Subject Term: POLYMERS -- Mechanical properties; Subject Term: POLYMER networks; Subject Term: CROSSLINKING (Polymerization); Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54319941&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hoey, Megan L. AU - Carlson, J. B. AU - Osgood, R. M. AU - Kimball, B. AU - Buchwald, W. T1 - rf plasma oxidation of Ni thin films sputter deposited to generate thin nickel oxide layers. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/10/11/ VL - 97 IS - 15 M3 - Article SP - 153104 PB - American Institute of Physics SN - 00036951 AB - Nickel oxide (NiO) layers were formed on silicon (Si) substrates by plasma oxidation of nickel (Ni) film lines. This ultrathin NiO layer acted as a barrier layer to conduction, and was an integral part of a metal-insulator-metal (MIM) diode, completed by depositing gold (Au) on top of the oxide. The electrical and structural properties of the NiO thin film were examined using resistivity calculations, current-voltage (I-V) measurements and cross-sectional transmission electron microscopy (XTEM) imaging. The flow rate of the oxygen gas, chamber pressure, power, and exposure time and their influence on the characteristics of the NiO thin film were studied. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL films KW - OXIDATION KW - PLASMA (Ionized gases) KW - SEMICONDUCTOR wafers KW - SILICON KW - RADIO frequency KW - SPUTTERING (Physics) KW - METALLIC oxides KW - TRANSMISSION electron microscopy N1 - Accession Number: 54471217; Hoey, Megan L. 1 Carlson, J. B. 1 Osgood, R. M. 1 Kimball, B. 1 Buchwald, W. 2; Affiliation: 1: US Army Natick Soldier Research, Development and Engineering Center, Natick, Massachusetts 01760, 2: Sensors Directorate, RYHC, Air Force Research Laboratory, Bldg 1138, Optoelectronics Technology Branch, Hanscom AFB, Massachusetts 01731,; Source Info: 10/11/2010, Vol. 97 Issue 15, p153104; Subject Term: NICKEL films; Subject Term: OXIDATION; Subject Term: PLASMA (Ionized gases); Subject Term: SEMICONDUCTOR wafers; Subject Term: SILICON; Subject Term: RADIO frequency; Subject Term: SPUTTERING (Physics); Subject Term: METALLIC oxides; Subject Term: TRANSMISSION electron microscopy; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 3p; Illustrations: 1 Black and White Photograph, 2 Diagrams, 2 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.3499661 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54471217&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Noren, Carrie AU - Ortiz, Theodore AU - Wilkinson, Michael AU - Klennert, Wade AU - Madden, Timothy AU - Chan, Richard AU - Wilhelm Behrens, H. AU - Walter, Robert T1 - Experimental and Computational Investigation of a Gas Laser Pressure Recovery System Diffuser. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2010/10/08/ VL - 1278 IS - 1 M3 - Article SP - 230 EP - 241 PB - American Institute of Physics SN - 0094243X AB - A diffuser, with the purpose of efficiently recovering pressure from a gas laser system, was designed and studied. A diffuser, as part of a pressure recovery system, is used in a gas laser system to transition the laser cavity's low pressure to the ambient pressure outside the device. The diffuser studied here is made up of a constant-area supersonic section and a diverging subsonic section. The diffuser is studied experimentally with pressure measurements and is modeled with 3-D CFD. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIFFUSERS (Fluid dynamics) KW - GAS lasers KW - FLUID dynamics KW - PRESSURE KW - LASER transitions KW - SUPERSONIC aerodynamics KW - NONLINEAR optics N1 - Accession Number: 54469484; Noren, Carrie 1 Ortiz, Theodore 1 Wilkinson, Michael 1 Klennert, Wade 1 Madden, Timothy 1 Chan, Richard 2 Wilhelm Behrens, H. 2 Walter, Robert 3; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, NM 87117, USA 2: Northrop Grumman Space Technology, Redondo Beach, CA 90278, USA 3: Schafer Corporation, Albuquerque, NM 87106, USA; Source Info: 10/8/2010, Vol. 1278 Issue 1, p230; Subject Term: DIFFUSERS (Fluid dynamics); Subject Term: GAS lasers; Subject Term: FLUID dynamics; Subject Term: PRESSURE; Subject Term: LASER transitions; Subject Term: SUPERSONIC aerodynamics; Subject Term: NONLINEAR optics; Number of Pages: 12p; Illustrations: 1 Color Photograph, 5 Diagrams, 6 Graphs; Document Type: Article L3 - 10.1063/1.3507108 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54469484&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, S.I. AU - Dimiduk, D.M. AU - El-Awady, J.A. AU - Parthasarathy, T.A. AU - Uchic, M.D. AU - Woodward, C. T1 - Activated states for cross-slip at screw dislocation intersections in face-centered cubic nickel and copper via atomistic simulation JO - Acta Materialia JF - Acta Materialia Y1 - 2010/10// VL - 58 IS - 17 M3 - Article SP - 5547 EP - 5557 SN - 13596454 AB - Abstract: We extend our recent simulation studies where a screw dislocation in face-centered cubic (fcc) Ni was found to spontaneously attain a low energy partially cross-slipped configuration upon intersecting a forest dislocation. Using atomistic (molecular statics) simulations with embedded atom potentials, we evaluated the activation barrier for a dislocation to transform from fully residing on the glide plane to fully residing on a cross-slip plane intersecting a forest dislocation in both Ni and Cu. The activation energies were obtained by determining equilibrium configurations (energies) when variable pure tensile or compressive stresses were applied along the [111] direction on the partially cross-slipped state. We show that the activation energy is a factor of 2–5 lower than that for cross-slip in isolation via the Escaig process. The cross-slip activation energies obtained at the intersection in Cu were in reasonable accord with the experimentally determined cross-slip activation energy for Cu. Further, the activation barrier for cross-slip at these intersections was shown to be linearly proportional to (d/b)[ln( d/b)]1/2, as in the Escaig process, where d is the Shockley partial dislocation spacing and b is the Burgers vector of the screw dislocation. These results suggest that cross-slip should be preferentially observed at selected screw dislocation intersections in fcc materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISLOCATIONS in metals KW - NICKEL KW - COPPER KW - SIMULATION methods & models KW - METALS -- Compression testing KW - STRAINS & stresses (Mechanics) KW - ACTIVATION (Chemistry) KW - FORCE & energy KW - Activation analysis KW - Atomistic simulations KW - Cross-slip KW - Escaig stresses KW - Nickel N1 - Accession Number: 53308392; Rao, S.I. 1; Email Address: satish.rao@wpafb.af.mil Dimiduk, D.M. 2 El-Awady, J.A. 3 Parthasarathy, T.A. 1 Uchic, M.D. 2 Woodward, C. 2; Affiliation: 1: UES Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432-1894, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM Wright-Patterson AFB, OH 45433-7817, USA 3: UTC, Dayton, OH 45432, USA; Source Info: Oct2010, Vol. 58 Issue 17, p5547; Subject Term: DISLOCATIONS in metals; Subject Term: NICKEL; Subject Term: COPPER; Subject Term: SIMULATION methods & models; Subject Term: METALS -- Compression testing; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ACTIVATION (Chemistry); Subject Term: FORCE & energy; Author-Supplied Keyword: Activation analysis; Author-Supplied Keyword: Atomistic simulations; Author-Supplied Keyword: Cross-slip; Author-Supplied Keyword: Escaig stresses; Author-Supplied Keyword: Nickel; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.actamat.2010.06.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53308392&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nixon, Michael E. AU - Lebensohn, Ricardo A. AU - Cazacu, Oana AU - Liu, Cheng T1 - Experimental and finite-element analysis of the anisotropic response of high-purity α-titanium in bending JO - Acta Materialia JF - Acta Materialia Y1 - 2010/10// VL - 58 IS - 17 M3 - Article SP - 5759 EP - 5767 SN - 13596454 AB - Abstract: In this paper, we present results of four-point bending tests performed on beams of high-purity α-titanium material. These tests have been performed at room temperature for different beam configurations and loading orientations with respect to the orthotropy axes of the material. Digital image correlation was used to determine local strains in the deformed beams. Experimental results compare very well with the predictions of finite-element simulations obtained using the elastic/plastic model developed by Nixon et al. (2010) . Specifically, we compare local deformations and the cross-sections of each beam for all loading configurations. We show that the model predicts with great accuracy the tension–compression asymmetry and the evolving anisotropy of the material. The experimentally observed upward shift of the neutral axis, as well as the rigidity of the response along the hard to deform c-axes are very well described by the proposed model. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FINITE element method KW - ANISOTROPY KW - TITANIUM KW - BENDING (Metalwork) KW - TWINNING (Crystallography) KW - ELASTOPLASTICITY KW - ORTHOTROPY (Mechanics) KW - TEMPERATURE effect KW - α-Titanium KW - Bent beams KW - Elastoplastic model KW - Orthotropy KW - Twinning N1 - Accession Number: 53308414; Nixon, Michael E. 1; Email Address: nixon@eglin.af.mil Lebensohn, Ricardo A. 2; Email Address: lebenso@lanl.gov Cazacu, Oana 3; Email Address: cazacu@reef.ufl.edu Liu, Cheng 2; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, USA 2: Los Alamos National Laboratory, MST Division, Los Alamos, NM 87545, USA 3: Department of Mechanical and Aerospace Engineering, University of Florida, REEF, 1350 N Poquito Road, Shalimar, FL 32539, USA; Source Info: Oct2010, Vol. 58 Issue 17, p5759; Subject Term: FINITE element method; Subject Term: ANISOTROPY; Subject Term: TITANIUM; Subject Term: BENDING (Metalwork); Subject Term: TWINNING (Crystallography); Subject Term: ELASTOPLASTICITY; Subject Term: ORTHOTROPY (Mechanics); Subject Term: TEMPERATURE effect; Author-Supplied Keyword: α-Titanium; Author-Supplied Keyword: Bent beams; Author-Supplied Keyword: Elastoplastic model; Author-Supplied Keyword: Orthotropy; Author-Supplied Keyword: Twinning; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.actamat.2010.06.051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53308414&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sinn, David L. AU - Gosling, Samuel D. AU - Hilliard, Stewart T1 - Personality and performance in military working dogs: Reliability and predictive validity of behavioral tests JO - Applied Animal Behaviour Science JF - Applied Animal Behaviour Science Y1 - 2010/10// VL - 127 IS - 1/2 M3 - Article SP - 51 EP - 65 SN - 01681591 AB - Abstract: Quantification and description of individual differences in behavior, or personality differences, is now well-established in the working dog literature. What is less well-known is the predictive relationship between particular dog behavioral traits (if any) and important working outcomes. Here we evaluate the validity of a dog behavioral test instrument given to military working dogs (MWDs) from the 341st Training Squadron, USA Department of Defense (DoD); the test instrument has been used historically to select dogs to be trained for deployment. A 15-item instrument was applied on three separate occasions prior to training in patrol and detection tasks, after which dogs were given patrol-only, detection-only, or dual-certification status. On average, inter-rater reliability for all 15 items was high (mean=0.77), but within this overall pattern, some behavioral items showed lower inter-rater reliability at some time points (<0.40). Test–retest reliability for most (but not all) single item behaviors was strong (>0.50) across shorter test intervals, but decreased with increasing test interval (<0.40). Principal components analysis revealed four underlying dimensions that summarized test behavior, termed here ‘object focus’, ‘sharpness’, ‘human focus’, and ‘search focus’. These four aggregate behavioral traits also had the same pattern of short-, but not long-term test–retest reliability as that observed for single item behaviors. Prediction of certification outcomes using an independent test data set revealed that certification outcomes could not be predicted by breed, sex, or early test behaviors. However, prediction was improved by models that included two aggregate behavioral trait scores and three single item behaviors measured at the final test period, with 1 unit increases in these scores resulting in 1.7–2.8 increased odds of successful dual- and patrol-only certification outcomes. No improvements to odor-detection certification outcomes were made by any model. While only modest model improvements in prediction error were made by using behavioral parameters (2–7%), model predictions were based on data from dogs that had successfully completed all three test periods only, and therefore did not include data from dogs that were rejected during testing or training due to behavioral or medical reasons. Thus, future improvements to predictive models may be more substantial using independent predictors with less restrictions in range. Reports of the reliability and validity estimates of behavioral instruments currently used to select MWDs are scarce, and we discuss these results in terms of improving the efficiency by which working dog programs may select dogs for patrol and odor-detection duties using behavioral pre-screening instruments. [Copyright &y& Elsevier] AB - Copyright of Applied Animal Behaviour Science is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARMED Forces KW - WORKING dogs KW - BEHAVIOR KW - PREDICTIVE validity KW - TASK performance KW - ANIMAL training KW - DOG breeding KW - Behavioral instrument KW - Military dog KW - Personality KW - Predictive validity KW - Reliability N1 - Accession Number: 53968409; Sinn, David L. 1,2 Gosling, Samuel D. 1; Email Address: samg@mail.utexas.edu Hilliard, Stewart 3; Affiliation: 1: University of Texas, Department of Psychology, 1 University Station A8000, Austin, TX 78712-0187, USA 2: University of Tasmania, School of Zoology, Private Bag 5, Hobart, TAS, 7001, Australia 3: United States Air Force, 341st Training Squadron/Logistics, 1320 Truemper St., Ste 2, Lackland AFB, TX 78236-5502, USA; Source Info: Oct2010, Vol. 127 Issue 1/2, p51; Subject Term: ARMED Forces; Subject Term: WORKING dogs; Subject Term: BEHAVIOR; Subject Term: PREDICTIVE validity; Subject Term: TASK performance; Subject Term: ANIMAL training; Subject Term: DOG breeding; Author-Supplied Keyword: Behavioral instrument; Author-Supplied Keyword: Military dog; Author-Supplied Keyword: Personality; Author-Supplied Keyword: Predictive validity; Author-Supplied Keyword: Reliability; NAICS/Industry Codes: 812910 Pet Care (except Veterinary) Services; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.applanim.2010.08.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53968409&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Javorsek, D. AU - Sturrock, P.A. AU - Lasenby, R.N. AU - Lasenby, A.N. AU - Buncher, J.B. AU - Fischbach, E. AU - Gruenwald, J.T. AU - Hoft, A.W. AU - Horan, T.J. AU - Jenkins, J.H. AU - Kerford, J.L. AU - Lee, R.H. AU - Longman, A. AU - Mattes, J.J. AU - Morreale, B.L. AU - Morris, D.B. AU - Mudry, R.N. AU - Newport, J.R. AU - O’Keefe, D. AU - Petrelli, M.A. T1 - Power spectrum analyses of nuclear decay rates JO - Astroparticle Physics JF - Astroparticle Physics Y1 - 2010/10// VL - 34 IS - 3 M3 - Article SP - 173 EP - 178 SN - 09276505 AB - Abstract: We provide the results from a spectral analysis of nuclear decay data displaying annually varying periodic fluctuations. The analyzed data were obtained from three distinct data sets: 32Si and 36Cl decays reported by an experiment performed at the Brookhaven National Laboratory (BNL), 56Mn decay reported by the Children’s Nutrition Research Center (CNRC), but also performed at BNL, and 226Ra decay reported by an experiment performed at the Physikalisch–Technische Bundesanstalt (PTB) in Germany. All three data sets exhibit the same primary frequency mode consisting of an annual period. Additional spectral comparisons of the data to local ambient temperature, atmospheric pressure, relative humidity, Earth–Sun distance, and their reciprocals were performed. No common phases were found between the factors investigated and those exhibited by the nuclear decay data. This suggests that either a combination of factors was responsible, or that, if it was a single factor, its effects on the decay rate experiments are not a direct synchronous modulation. We conclude that the annual periodicity in these data sets is a real effect, but that further study involving additional carefully controlled experiments will be needed to establish its origin. [ABSTRACT FROM AUTHOR] AB - Copyright of Astroparticle Physics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRUM analysis KW - RADIOACTIVE decay KW - ATMOSPHERIC pressure KW - TEMPERATURE effect KW - RECIPROCALS (Mathematics) KW - Nuclear decay KW - Radioactive decay KW - Spectral analysis KW - BROOKHAVEN National Laboratory N1 - Accession Number: 53304035; Javorsek, D. 1; Email Address: javorsek@hotmail.com Sturrock, P.A. 2 Lasenby, R.N. 3 Lasenby, A.N. 4 Buncher, J.B. 5 Fischbach, E. 5 Gruenwald, J.T. 5 Hoft, A.W. 5,6 Horan, T.J. 5,6,7 Jenkins, J.H. 5,8 Kerford, J.L. 5,6 Lee, R.H. 9 Longman, A. 5 Mattes, J.J. 5 Morreale, B.L. 9 Morris, D.B. 9 Mudry, R.N. 9,10 Newport, J.R. 5 O’Keefe, D. 9 Petrelli, M.A. 5,6,11; Affiliation: 1: 411th Flight Test Squadron, 412th Test Wing, Edwards AFB, CA 93524, USA 2: Center for Space Science Astrophysics, Stanford University, Stanford, CA 94305, USA 3: St. John’s College, Cambridge CB2 1TP, UK 4: Astrophysics Group, Cavendish Laboratory, Cambridge CB3 0HE, UK 5: Department of Physics, Purdue University, West Lafayette, IN 47907, USA 6: Detachment 220, Air Force Reserve Officer Training Corps, West Lafayette, IN 47907, USA 7: 47th Operations Support Squadron, 47th Flying Training Wing, Laughlin AFB, TX 78843, USA 8: School of Nuclear Engineering, Purdue University, West Lafayette, IN 47907, USA 9: Department of Physics, United States Air Force Academy, CO 80920, USA 10: Training Squadron 3, Training Air Wing 5, NAS Whiting Field, Milton, FL 32570, USA 11: 392nd Training Squadron, 30th Space Wing, Vandenberg AFB, CA 93437, USA; Source Info: Oct2010, Vol. 34 Issue 3, p173; Subject Term: SPECTRUM analysis; Subject Term: RADIOACTIVE decay; Subject Term: ATMOSPHERIC pressure; Subject Term: TEMPERATURE effect; Subject Term: RECIPROCALS (Mathematics); Author-Supplied Keyword: Nuclear decay; Author-Supplied Keyword: Radioactive decay; Author-Supplied Keyword: Spectral analysis; Company/Entity: BROOKHAVEN National Laboratory; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.astropartphys.2010.06.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53304035&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jones, Patrick A. AU - Waller, Robert L. T1 - A MODEL OF CATHOLIC SOCIAL TEACHING: ASSESSING POLICY PROPOSALS. JO - Catholic Social Science Review JF - Catholic Social Science Review Y1 - 2010/10// VL - 15 M3 - Article SP - 283 EP - 295 SN - 10910905 AB - Human Dignity is the preeminent goal and principle of Catholic Social Teaching. However there does not appear to be any systematic way of evaluating the effectiveness of proposed social actions or policies for their effectiveness in upholding Human Dignity. Social Doctrine identifies three additional permanent principles: the Common Good, Solidarity, and Subsidiarity; and, Human Dignity is upheld best when these other three are each fully and equally met. The resulting "triad stool" model proposed here which upholds Human Dignity offers the faithful a powerful means of understanding and evaluating social actions for their advancement of Human Dignity. [ABSTRACT FROM AUTHOR] AB - Copyright of Catholic Social Science Review is the property of Society of Catholic Social Scientists and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIGNITY KW - RELIGION & social problems KW - SOLIDARITY KW - SUBSIDIARITY KW - SOCIAL action KW - RELIGIOUS aspects N1 - Accession Number: 54292402; Jones, Patrick A. 1 Waller, Robert L. 1,2; Affiliation: 1: Permanent Deacon, Colorado Springs, CO 2: US. Air Force Academy; Source Info: 2010, Vol. 15, p283; Subject Term: DIGNITY; Subject Term: RELIGION & social problems; Subject Term: SOLIDARITY; Subject Term: SUBSIDIARITY; Subject Term: SOCIAL action; Subject Term: RELIGIOUS aspects; Number of Pages: 13p; Illustrations: 6 Diagrams; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54292402&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ombrello, Timothy AU - Won, Sang Hee AU - Ju, Yiguang AU - Williams, Skip T1 - Flame propagation enhancement by plasma excitation of oxygen. Part I: Effects of O3 JO - Combustion & Flame JF - Combustion & Flame Y1 - 2010/10// VL - 157 IS - 10 M3 - Article SP - 1906 EP - 1915 SN - 00102180 AB - Abstract: The thermal and kinetic effects of O3 on flame propagation were investigated experimentally and numerically by using C3H8/O2/N2 laminar lifted flames. Ozone produced by a dielectric barrier plasma discharge was isolated and measured quantitatively by using absorption spectroscopy. Significant kinetic enhancement by O3 was observed by comparing flame stabilization locations with and without O3 production. Experiments at atmospheric pressures showed an 8% enhancement in the flame propagation speed for 1260ppm of O3 addition to the O2/N2 oxidizer. Numerical simulations showed that the O3 decomposition and reaction with H early in the pre-heat zone of the flame produced O and OH, respectively, from which the O reacted rapidly with C3H8 and produced additional OH. The subsequent reaction of OH with the fuel and fuel fragments, such as CH2O, provided chemical heat release at lower temperatures to enhance the flame propagation speed. It was shown that the kinetic effect on flame propagation enhancement by O3 reaching the pre-heat zone of the flame for early oxidation of fuel was much greater than that by the thermal effect from the energy contained within O3. For non-premixed laminar lifted flames, the kinetic enhancement by O3 also induced changes to the hydrodynamics at the flame front which provided additional enhancement of the flame propagation speed. The present results will have a direct impact on the development of detailed plasma-flame kinetic mechanisms and provided a foundation for the study of combustion enhancement by O2(a 1 Δg ) in part II of this investigation. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA (Ionized gases) KW - OXYGEN KW - FLAME KW - THERMAL analysis KW - CHEMICAL kinetics KW - ABSORPTION spectra KW - ATMOSPHERIC pressure KW - COMPUTER simulation KW - TEMPERATURE effect KW - Flame propagation enhancement KW - Flame speed enhancement KW - Lifted flame KW - Ozone KW - Plasma-assisted combustion KW - Tribrachial flame N1 - Accession Number: 53053023; Ombrello, Timothy 1; Email Address: timothy.ombrello@wpafb.af.mil Won, Sang Hee 1; Email Address: sangwon@princeton.edu Ju, Yiguang 1; Email Address: yju@princeton.edu Williams, Skip 2; Email Address: skip.williams@maui.afmc.af.mil; Affiliation: 1: Department of Mechanical and Aerospace Engineering, Engineering Quadrangle, Olden Street, Princeton, NJ 08544, USA 2: Air Force Research Laboratory, Propulsion Directorate, 1950 Fifth Street, Wright-Patterson AFB, OH 45433, USA; Source Info: Oct2010, Vol. 157 Issue 10, p1906; Subject Term: PLASMA (Ionized gases); Subject Term: OXYGEN; Subject Term: FLAME; Subject Term: THERMAL analysis; Subject Term: CHEMICAL kinetics; Subject Term: ABSORPTION spectra; Subject Term: ATMOSPHERIC pressure; Subject Term: COMPUTER simulation; Subject Term: TEMPERATURE effect; Author-Supplied Keyword: Flame propagation enhancement; Author-Supplied Keyword: Flame speed enhancement; Author-Supplied Keyword: Lifted flame; Author-Supplied Keyword: Ozone; Author-Supplied Keyword: Plasma-assisted combustion; Author-Supplied Keyword: Tribrachial flame; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.combustflame.2010.02.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53053023&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanford, Bret AU - Beran, Philip AU - Kurdi, Mohammad T1 - Adjoint sensitivities of time-periodic nonlinear structural dynamics via model reduction JO - Computers & Structures JF - Computers & Structures Y1 - 2010/10// VL - 88 IS - 19/20 M3 - Article SP - 1110 EP - 1123 SN - 00457949 AB - Abstract: This work details a comparative analysis of six methods for computing the transient system response and adjoint design derivatives of a nonlinear structure under a periodic external actuation. Time marching via implicit integration, a time-periodic spectral element method, and a time-periodic finite difference method are all considered, each with or without POD-based model reduction of the system of equations. Details of each method, and the concomitant adjoint sensitivities, are provided in terms of accuracy, stability, and Jacobian sparsity patterns. Each method is used for a gradient-based optimization of a nonlinear planar beam, periodically actuated at its root, subject to a large number of structural design parameters. The method with the lowest computational design cost is found to be a strong function of the harmonic content and the nonlinearity of the transient response. [ABSTRACT FROM AUTHOR] AB - Copyright of Computers & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SENSITIVITY analysis KW - NONLINEAR mechanics KW - STRUCTURAL dynamics KW - COMPARATIVE studies KW - TRANSIENTS (Dynamics) KW - FINITE differences KW - FINITE element method KW - Adjoint derivatives KW - Model reduction KW - Nonlinear structural dynamics KW - Spectral elements N1 - Accession Number: 52936613; Stanford, Bret; Email Address: bret.stanford@wpafb.af.mil Beran, Philip 1 Kurdi, Mohammad 1; Affiliation: 1: Air Vehicles Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Oct2010, Vol. 88 Issue 19/20, p1110; Subject Term: SENSITIVITY analysis; Subject Term: NONLINEAR mechanics; Subject Term: STRUCTURAL dynamics; Subject Term: COMPARATIVE studies; Subject Term: TRANSIENTS (Dynamics); Subject Term: FINITE differences; Subject Term: FINITE element method; Author-Supplied Keyword: Adjoint derivatives; Author-Supplied Keyword: Model reduction; Author-Supplied Keyword: Nonlinear structural dynamics; Author-Supplied Keyword: Spectral elements; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.compstruc.2010.06.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52936613&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pilchak, A.L. AU - Young, A.H. AU - Williams, J.C. T1 - Stress corrosion cracking facet crystallography of Ti–8Al–1Mo–1V JO - Corrosion Science JF - Corrosion Science Y1 - 2010/10// VL - 52 IS - 10 M3 - Article SP - 3287 EP - 3296 SN - 0010938X AB - Abstract: The spatial and crystallographic orientations of facets formed during stress corrosion cracking of Ti–8Al–1Mo–1V have been characterized using quantitative fractography and electron backscatter diffraction. The results indicate that most facets are formed nearly perpendicular to the loading direction on irrational {h k i l} planes. The facets were imaged with high resolution scanning electron microscopy and were found to contain evidence of localized plastic flow despite their “brittle” appearance at moderate magnification. Some fracture planes were related to titanium hydride habit planes, however, the mechanism of faceted growth does not appear to involve hydride nucleation, growth, and fracture, but rather hydrogen enhanced localized plasticity. [ABSTRACT FROM AUTHOR] AB - Copyright of Corrosion Science is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRESS corrosion cracking KW - CRYSTALLOGRAPHY KW - TITANIUM alloys KW - SCANNING electron microscopy KW - NUCLEATION KW - FRACTOGRAPHY KW - HIGH resolution spectroscopy KW - PLASTICITY KW - METALS -- Hydrogen embrittlement KW - A. Titanium KW - B. SEM KW - C. Hydrogen embrittlement KW - C. Stress corrosion cracking N1 - Accession Number: 53053106; Pilchak, A.L. 1,2; Email Address: pilchak@matsceng.ohio-state.edu Young, A.H. 3 Williams, J.C. 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, OH 45433, United States 2: Universal Technology Corporation, Dayton, OH 45432, United States 3: The Ohio State University, Department of Materials Science and Engineering, Columbus, OH 43210, United States; Source Info: Oct2010, Vol. 52 Issue 10, p3287; Subject Term: STRESS corrosion cracking; Subject Term: CRYSTALLOGRAPHY; Subject Term: TITANIUM alloys; Subject Term: SCANNING electron microscopy; Subject Term: NUCLEATION; Subject Term: FRACTOGRAPHY; Subject Term: HIGH resolution spectroscopy; Subject Term: PLASTICITY; Subject Term: METALS -- Hydrogen embrittlement; Author-Supplied Keyword: A. Titanium; Author-Supplied Keyword: B. SEM; Author-Supplied Keyword: C. Hydrogen embrittlement; Author-Supplied Keyword: C. Stress corrosion cracking; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.corsci.2010.05.046 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53053106&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ivnitski, Dmitri M. AU - Khripin, Constantine AU - Luckarift, Heather R. AU - Johnson, Glenn R. AU - Atanassov, Plamen T1 - Surface characterization and direct bioelectrocatalysis of multicopper oxidases JO - Electrochimica Acta JF - Electrochimica Acta Y1 - 2010/10// VL - 55 IS - 24 M3 - Article SP - 7385 EP - 7393 SN - 00134686 AB - Abstract: Multicopper oxidases (MCO) have been extensively studied as oxygen reduction catalysts for cathodic reactions in biofuel cells. Theoretically, direct electron transfer between an enzyme and electrode offers optimal energy conversion efficiency providing that the enzyme/electrode interface can be engineered to establish efficient electrical communication. In this study, the direct bioelectrocatalysis of three MCO (Laccase from Trametes versicolor, bilirubin oxidase (BOD) from the fungi Myrothecium verrucaria and ascorbate oxidase (AOx) from Cucurbita sp.) was investigated and compared as oxygen reduction catalysts. Protein film voltammetry and electrochemical characterization of the MCO electrodes showed that DET had been successfully established in all cases. Atomic force microscopy imaging and force measurements indicated that enzyme was immobilized as a monolayer on the electrode surface. Evidence for three clearly separated anodic and cathodic redox events related to the Type 1 (T1) and the trinculear copper centers (T2, T3) of various MCO was observed. The redox potential of the T1 center was strongly modulated by physiological factors including pH, anaerobic and aerobic conditions and the presence of inhibitors. [ABSTRACT FROM AUTHOR] AB - Copyright of Electrochimica Acta is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXIDASES KW - ELECTROCATALYSIS KW - OXIDATION-reduction reaction KW - BIOMASS energy KW - CHARGE exchange KW - ATOMIC force microscopy KW - Ascorbate oxidase KW - Bilirubin oxidase KW - Bio-cathode KW - Enzymatic fuel cell KW - Laccase N1 - Accession Number: 53715752; Ivnitski, Dmitri M. 1,2; Email Address: ivnitski@unm.edu Khripin, Constantine 1 Luckarift, Heather R. 2,3 Johnson, Glenn R. 2 Atanassov, Plamen 1; Email Address: plamen@unm.edu; Affiliation: 1: Chemical and Nuclear Engineering, University of New Mexico, Albuquerque 87131, USA 2: Air Force Research Laboratory, AFRL/RXQL, Microbiology and Applied Biochemistry, Tyndall Air Force Base, FL 32403, USA 3: Universal Technology Corporation, 1270 N. Fairfield Road, Dayton, OH 45432, USA; Source Info: Oct2010, Vol. 55 Issue 24, p7385; Subject Term: OXIDASES; Subject Term: ELECTROCATALYSIS; Subject Term: OXIDATION-reduction reaction; Subject Term: BIOMASS energy; Subject Term: CHARGE exchange; Subject Term: ATOMIC force microscopy; Author-Supplied Keyword: Ascorbate oxidase; Author-Supplied Keyword: Bilirubin oxidase; Author-Supplied Keyword: Bio-cathode; Author-Supplied Keyword: Enzymatic fuel cell; Author-Supplied Keyword: Laccase; NAICS/Industry Codes: 221117 Biomass Electric Power Generation; NAICS/Industry Codes: 221119 Other electric power generation; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.electacta.2010.07.026 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53715752&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Meier, W. AU - Boxx, I. AU - Stöhr, M. AU - Carter, C. D. T1 - Laser-based investigations in gas turbine model combustors. JO - Experiments in Fluids JF - Experiments in Fluids Y1 - 2010/10// VL - 49 IS - 4 M3 - Article SP - 865 EP - 882 SN - 07234864 AB - Dynamic processes in gas turbine (GT) combustors play a key role in flame stabilization and extinction, combustion instabilities and pollutant formation, and present a challenge for experimental as well as numerical investigations. These phenomena were investigated in two gas turbine model combustors for premixed and partially premixed CH/air swirl flames at atmospheric pressure. Optical access through large quartz windows enabled the application of laser Raman scattering, planar laser-induced fluorescence (PLIF) of OH, particle image velocimetry (PIV) at repetition rates up to 10 kHz and the simultaneous application of OH PLIF and PIV at a repetition rate of 5 kHz. Effects of unmixedness and reaction progress in lean premixed GT flames were revealed and quantified by Raman scattering. In a thermo-acoustically unstable flame, the cyclic variation in mixture fraction and its role for the feedback mechanism of the instability are addressed. In a partially premixed oscillating swirl flame, the cyclic variations of the heat release and the flow field were characterized by chemiluminescence imaging and PIV, respectively. Using phase-correlated Raman scattering measurements, significant phase-dependent variations of the mixture fraction and fuel distributions were revealed. The flame structures and the shape of the reaction zones were visualized by planar imaging of OH distribution. The simultaneous OH PLIF/PIV high-speed measurements revealed the time history of the flow field-flame interaction and demonstrated the development of a local flame extinction event. Further, the influence of a precessing vortex core on the flame topology and its dynamics is discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Experiments in Fluids is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS turbines KW - PARTICLE image velocimetry KW - COMBUSTION chambers KW - RAMAN effect KW - FLUORESCENCE KW - FLAME N1 - Accession Number: 53912931; Meier, W. 1; Email Address: wolfgang.meier@dlr.de Boxx, I. 1 Stöhr, M. 1 Carter, C. D. 2; Affiliation: 1: Institut für Verbrennungstechnik, Deutsches Zentrum für Luft- und Raumfahrt (DLR), Pfaffenwaldring 38, 70569 Stuttgart, Germany 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: Oct2010, Vol. 49 Issue 4, p865; Subject Term: GAS turbines; Subject Term: PARTICLE image velocimetry; Subject Term: COMBUSTION chambers; Subject Term: RAMAN effect; Subject Term: FLUORESCENCE; Subject Term: FLAME; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 562210 Waste treatment and disposal; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 18p; Illustrations: 10 Diagrams, 1 Graph; Document Type: Article L3 - 10.1007/s00348-010-0889-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53912931&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hsu, Paul S. AU - Patnaik, Anil K. AU - Gord, James R. AU - Meyer, Terrence R. AU - Kulatilaka, Waruna D. AU - Roy, Sukesh T1 - Investigation of optical fibers for coherent anti-Stokes Raman scattering (CARS) spectroscopy in reacting flows. JO - Experiments in Fluids JF - Experiments in Fluids Y1 - 2010/10// VL - 49 IS - 4 M3 - Article SP - 969 EP - 984 SN - 07234864 AB - The objective of this work is to investigate the feasibility of intense laser-beam propagation through optical fibers for temperature and species concentration measurements in gas-phase reacting flows using coherent anti-Stokes Raman scattering (CARS) spectroscopy. In particular, damage thresholds of fibers, nonlinear effects during beam propagation, and beam quality at the output of the fibers are studied for the propagation of nanosecond (ns) and picosecond (ps) laser beams. It is observed that ps pulses are better suited for fiber-based nonlinear optical spectroscopic techniques, which generally depend on laser irradiance rather than fluence. A ps fiber-coupled CARS system using multimode step-index fibers is developed. Temperature measurements using this system are demonstrated in an atmospheric pressure, near-adiabatic laboratory flame. Proof-of-concept measurements show significant promise for fiber-based CARS spectroscopy in harsh combustion environments. Furthermore, since ps-CARS spectroscopy allows the suppression of non-resonant background, this technique could be utilized for improving the sensitivity and accuracy of CARS thermometry in high-pressure hydrocarbon-fueled combustors. [ABSTRACT FROM AUTHOR] AB - Copyright of Experiments in Fluids is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRUM analysis KW - RAMAN spectroscopy KW - OPTICAL fibers KW - TEMPERATURE measurements KW - COMBUSTION engineering KW - RAMAN effect N1 - Accession Number: 53912928; Hsu, Paul S. 1 Patnaik, Anil K. 2 Gord, James R. 2 Meyer, Terrence R. 3 Kulatilaka, Waruna D. 4 Roy, Sukesh 4; Email Address: sroy@woh.rr.com; Affiliation: 1: Spectral Energies, LLC, Dayton, OH 45433, USA 2: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, Dayton, OH 45433, USA 3: Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA 4: Spectral Energies, LLC, Dayton, OH 45432, USA; Source Info: Oct2010, Vol. 49 Issue 4, p969; Subject Term: SPECTRUM analysis; Subject Term: RAMAN spectroscopy; Subject Term: OPTICAL fibers; Subject Term: TEMPERATURE measurements; Subject Term: COMBUSTION engineering; Subject Term: RAMAN effect; NAICS/Industry Codes: 541330 Engineering Services; NAICS/Industry Codes: 327214 Glass manufacturing; Number of Pages: 16p; Illustrations: 5 Diagrams, 4 Charts, 6 Graphs; Document Type: Article L3 - 10.1007/s00348-010-0961-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53912928&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Suri, Niranjan AU - Benincasa, Giacomo AU - Tortonesi, Mauro AU - Stefanelli, Cesare AU - Kovach, Jesse AU - Winkler, Robert AU - Kohler, U.S. AU - Hanna, James AU - Pochet, Louis AU - Watson, Scott T1 - Peer-to-peer communications for tactical environments: Observations, requirements, and experiences. JO - IEEE Communications Magazine JF - IEEE Communications Magazine Y1 - 2010/10// VL - 48 IS - 10 M3 - Article SP - 60 EP - 69 SN - 01636804 AB - Tactical edge networks present extremely challenging environments for communications given their wireless ad hoc nature and the inherent node mobility. Military applications such as Blue Force Tracking, inter-team communications, remote unmanned vehicle control, and sensor data mining/fusion thus have to deal with unstable links with limited bandwidth and variable latency. The peculiar characteristics of tactical networks call for peer-to-peer approaches to realize complex, adaptive, and fault-tolerant applications to be deployed in the battlefield. This article reports on our observations from several tactical networking experiments in which we have deployed state-of-the-art applications and services that leverage P2P communications. More specifically, we discuss why P2P approaches are critical for tactical network environments and applications. We then analyze the requirements that should be satisfied by P2P middleware for tactical environments. Finally, we discuss a case study, the Agile Computing Middleware, and present experimental results that demonstrate its effectiveness. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Communications Magazine is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 54290164; Suri, Niranjan 1 Benincasa, Giacomo 1 Tortonesi, Mauro 2 Stefanelli, Cesare 2 Kovach, Jesse 3 Winkler, Robert 3 Kohler, U.S. 4 Hanna, James 4 Pochet, Louis 5 Watson, Scott 6; Affiliation: 1: Florida Institute for Human and Machine Cognition 2: University of Ferrara 3: U.S. Army Research Laboratory 4: U.S. Air Force Research Laboratory 5: U.S. Air Force Reserves 6: Space and Naval Warfare Systems Center, Pacific; Source Info: Oct2010, Vol. 48 Issue 10, p60; Number of Pages: 0p; Document Type: Article L3 - 10.1109/MCOM.2010.5594678 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54290164&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kirawanich, Phumin AU - Pausawasdi, Nonthalee AU - Srisawat, Chatchawan AU - Yakura, Susumu J. AU - Islam, Naz E. T1 - An FDTD Interaction Scheme of a High-Intensity Nanosecond-Pulsed Electric-Field System for In Vitro Cell Apoptosis Applications. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2010/10//Oct2010 Part 1 VL - 38 IS - 10 M3 - Article SP - 2574 EP - 2582 SN - 00933813 AB - A finite-difference time-domain analysis of a high-intensity nanosecond-pulsed electric-field (nsPEF) system, composed of a pulse-forming line (PFL) and a universal electroporation cuvette, is described. The simulation scheme is based on interactions of 1-D transmission-line equations for the PFL and 3-D Maxwell's curl equations for the cuvette volume. Simulations incorporate system adjustment to facilitate maximum transfer of electrical energy from the PFL to the cuvette medium. Experimental validation of the voltage across the cuvette electrodes through the laboratory-constructed nsPEF system with an energy density of \sim\!\!1\ \J/\cm^3 reveals an overall agreement with some discrepancies. The distribution profiles of the transient field inside the cell suspension area during the excitation of 5-kV 10-ns pulses would adequately account for the feasibility of using an integrated model as a design benchmark for the interaction physics of the generated nanosecond pulses and culture vessel. The observed nsPEF effects on cells include increased transmembrane potentials across organelle membranes without permanently damaging the cell membrane, increasing the probability of electric field interactions with intracellular structures. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Biomembranes KW - Computational modeling KW - Equations KW - Finite difference methods KW - Finite-difference time-domain (FDTD) method KW - Load modeling KW - Mathematical model KW - nanosecond-pulsed electric field (nsPEF) KW - pulse-forming line (PFL) KW - Time domain analysis N1 - Accession Number: 54502659; Kirawanich, Phumin 1 Pausawasdi, Nonthalee 2 Srisawat, Chatchawan 3 Yakura, Susumu J. 4 Islam, Naz E. 5; Affiliation: 1: Electrical Engineering Department, Mahidol University, Salaya , Thailand 2: Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University , Bangkok, Thailand 3: Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University , Bangkok, Thailand 4: Modeling and Effects Branch, High Power Microwave Division, Directed Energy Directorate, Air Force Research Laboratory, Kirtland Air Force Base, NM, USA 5: Electrical and Computer Engineering Department, University of Missouri—Columbia , Columbia, MO, USA; Source Info: Oct2010 Part 1, Vol. 38 Issue 10, p2574; Author-Supplied Keyword: Biomembranes; Author-Supplied Keyword: Computational modeling; Author-Supplied Keyword: Equations; Author-Supplied Keyword: Finite difference methods; Author-Supplied Keyword: Finite-difference time-domain (FDTD) method; Author-Supplied Keyword: Load modeling; Author-Supplied Keyword: Mathematical model; Author-Supplied Keyword: nanosecond-pulsed electric field (nsPEF); Author-Supplied Keyword: pulse-forming line (PFL); Author-Supplied Keyword: Time domain analysis; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TPS.2009.2038916 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54502659&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Domonkos, Matthew T. AU - Heidger, Susan AU - Brown, Darwin AU - Parker, Jerald V. AU - Gregg, Carl W. AU - Slenes, Kirk AU - Hackenberger, Wes AU - Kwon, Seongtae AU - Loree, Ellis AU - Tran, Tyrone T1 - Submicrosecond Pulsed Power Capacitors Based on Novel Ceramic Technologies. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2010/10//Oct2010 Part 1 VL - 38 IS - 10 M3 - Article SP - 2686 EP - 2693 SN - 00933813 AB - Capacitor energy density for submicrosecond discharge applications was investigated for capacitors based on the following: 1) polymer–ceramic nanocomposite (PCNC); 2) antiferroelectric (AFE); and 3) paraelectric (PE) ceramic dielectrics. The developmental PCNC dielectric enabled design, fabrication, and testing iterations to be completed relatively rapidly. The PCNC capacitors were nominally 4 nF and were tested to dc potentials of at least 75 kV. The capacitors were then charged from 20 to 48 kV with a dc high-voltage power supply and discharged into a nearly critically damped test circuit of up to 5 pulses/s (pps) repetition rate for lifetime testing. The discharge time was 65 ns. Shot life as a function of the charge voltage was compared for three design iterations. Changes in the manufacturing of the PCNC capacitors have yielded up to 100x improvements in pulse discharge life. The 1–2-kV prototype, nonlinear (antiferroelectric and paraelectric) multilayer ceramic capacitors had zero-voltage capacitance ratings of between 60 and 300 nF. They were charged to their operating voltage and discharged into a nearly critically damped load in 2–6 \mu\s, depending on their capacitance, at repetition rates of up to 75 pps. Their operating voltage for fast, repetitive discharge was determined for lifetimes consistently over 10^5 shots. Discharge energy densities of 0.27–1.80 J/cc and energy losses of 7.9–36.8% were obtained for the packaged multilayer capacitors with different formulations of nonlinear dielectrics. Increased field-induced strain was correlated with increased permittivity and contributed to the limitations on the operating voltage. Multilayer ceramic capacitors fabricated from AFE and PE ceramic dielectrics have the potential to achieve high energy density owing to their high relative permittivities that vary with applied electric field, assuming they can be scaled up to sufficiently high voltages. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Capacitance KW - Capacitors KW - Ceramics KW - Discharges KW - life estimation KW - Polymers KW - pulse power systems N1 - Accession Number: 54502674; Domonkos, Matthew T. 1 Heidger, Susan 1 Brown, Darwin 2 Parker, Jerald V. 2 Gregg, Carl W. 2 Slenes, Kirk 3 Hackenberger, Wes 4 Kwon, Seongtae 4 Loree, Ellis 5 Tran, Tyrone 1; Affiliation: 1: Air Force Research Laboratory (AFRL), Kirtland AFB, NM, USA 2: SAIC, Albuquerque, USA 3: TPL, Incorporated, Albuquerque, NM, USA 4: Technologies, Incorporated, State College, PA, USA 5: Loree Engineering, Albuquerque, NM, USA; Source Info: Oct2010 Part 1, Vol. 38 Issue 10, p2686; Author-Supplied Keyword: Capacitance; Author-Supplied Keyword: Capacitors; Author-Supplied Keyword: Ceramics; Author-Supplied Keyword: Discharges; Author-Supplied Keyword: life estimation; Author-Supplied Keyword: Polymers; Author-Supplied Keyword: pulse power systems; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TPS.2010.2049124 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54502674&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nguyen, Kiet A. AU - Day, Paul N. AU - Pachter, Ruth T1 - Analytical energy gradients of Coulomb-attenuated time-dependent density functional methods for excited states. JO - International Journal of Quantum Chemistry JF - International Journal of Quantum Chemistry Y1 - 2010/10// VL - 110 IS - 12 M3 - Article SP - 2247 EP - 2255 SN - 00207608 AB - We present an implementation and validation of the analytical energy gradient of time-dependent density functional theory (TDDFT) using Coulomb-attenuated (CA) functionals for excited state energies, dipole moments, geometries, and vibrational frequencies. The CA-TDDFT gradient is based on the previous long-range corrected TDDFT of (Chiba et al. J Chem Phys 2006, 124, 144106) and the Z-vector formalism of (Furche and Ahlrichs J Chem Phys 2002, 117, 7433). Geometry optimization using CA-TDDFT was carried out for molecules (substituted stilbenes and coumarins) having intramolecular charge-transfer excited states and for a series of small molecules (CO, HCN, CH2O, CH2S, CCl2, C2H2, trans-(CHO)2). We assess the results of the CA functionals, the long-range corrected LC-BLYP functional, and the B3LYP hybrid functional, by comparing to accurate experimental data. The results highlight the applicabilty of different functionals for excited state properties. © 2010 Wiley Periodicals, Inc. Int J Quantum Chem, 2010 [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Quantum Chemistry is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DENSITY functionals KW - ANTICOAGULANTS (Medicine) KW - DIPOLE moments KW - PHENYL compounds KW - POLARIZATION (Electricity) KW - Coulomb-attenuated functional KW - gradient KW - long-range corrected functional KW - quadratic response KW - TDDFT N1 - Accession Number: 51854157; Nguyen, Kiet A. 1,2; Email Address: kiet.nguyen@wpafb.af.mil Day, Paul N. 1,3 Pachter, Ruth 1; Email Address: ruth.pachter@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433. 2: UES, Inc., Dayton, OH 45432. 3: General Dynamics Information Technology, Inc., Dayton, OH 45431.; Source Info: 2010, Vol. 110 Issue 12, p2247; Subject Term: DENSITY functionals; Subject Term: ANTICOAGULANTS (Medicine); Subject Term: DIPOLE moments; Subject Term: PHENYL compounds; Subject Term: POLARIZATION (Electricity); Author-Supplied Keyword: Coulomb-attenuated functional; Author-Supplied Keyword: gradient; Author-Supplied Keyword: long-range corrected functional; Author-Supplied Keyword: quadratic response; Author-Supplied Keyword: TDDFT; Number of Pages: 9p; Illustrations: 3 Diagrams, 4 Charts; Document Type: Article L3 - 10.1002/qua.22599 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51854157&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Walker, Thomas B. AU - Smith, Jessica AU - Herrera, Monica AU - Lebegue, Breck AU - Pinchak, Andrea AU - Fischer, Joseph T1 - The Influence of 8 Weeks of Whey-Protein and Leucine Supplementation on Physical and Cognitive Performance. JO - International Journal of Sport Nutrition & Exercise Metabolism JF - International Journal of Sport Nutrition & Exercise Metabolism Y1 - 2010/10// VL - 20 IS - 5 M3 - Article SP - 409 EP - 417 SN - 1526484X AB - The purpose of this study was to investigate the ability of whey-protein and leucine supplementation to enhance physical and cognitive performance and body composition. Thirty moderately fit participants completed a modified Air Force fitness test, a computer-based cognition test, and a dual-energy X-ray-absorptiometry scan for body composition before and after supplementing their daily diet for 8 wk with either 19.7 g of whey protein and 6.2 g leucine (WPL) or a calorie-equivalent placebo (P). Bench-press performance increased significantly from Week 1 to Week 8 in the WPL group, whereas the increase in the P group was not significant. Push-up performance increased significantly for WPL, and P showed a nonsignificant increase. Total mass, fat-free mass, and lean body mass all increased significantly in the WPL group but showed no change in the P group. No differences were observed within or between groups for crunches, chin-ups, 3-mile-run time, or cognition. The authors conclude that supplementing with whey protein and leucine may provide an advantage to people whose performance benefits from increased upper body strength and/or lean body mass. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Sport Nutrition & Exercise Metabolism is the property of Human Kinetics Publishers, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICAL fitness -- Evaluation KW - AEROBIC exercises KW - ANALYSIS of variance KW - BODY composition KW - CHI-squared test KW - CLINICAL trials KW - COGNITION KW - DIETARY supplements KW - LEUCINE KW - MILK proteins KW - MUSCLE strength KW - NURSING assessment KW - OUTCOME assessment (Medical care) KW - PLACEBOS (Medicine) KW - RESEARCH -- Finance KW - T-test (Statistics) KW - WEIGHT lifting KW - X-ray densitometry in medicine KW - SCALE items KW - EFFECT sizes (Statistics) KW - ERGOGENIC aids KW - BODY movement KW - REPEATED measures design KW - BLIND experiment KW - FOOD diaries KW - ADMINISTRATION of drugs KW - DOSAGE of drugs KW - body composition KW - ergogenics KW - exercise KW - nutritional supplementation N1 - Accession Number: 53951876; Walker, Thomas B. 1 Smith, Jessica 1 Herrera, Monica 1 Lebegue, Breck 1 Pinchak, Andrea 1 Fischer, Joseph 2; Affiliation: 1: Air Force Research Laboratory, Brooks Air Force Base, San Antonio, TX 2: General Dynamics Advanced Information Services, San Antonio; Source Info: Oct2010, Vol. 20 Issue 5, p409; Subject Term: PHYSICAL fitness -- Evaluation; Subject Term: AEROBIC exercises; Subject Term: ANALYSIS of variance; Subject Term: BODY composition; Subject Term: CHI-squared test; Subject Term: CLINICAL trials; Subject Term: COGNITION; Subject Term: DIETARY supplements; Subject Term: LEUCINE; Subject Term: MILK proteins; Subject Term: MUSCLE strength; Subject Term: NURSING assessment; Subject Term: OUTCOME assessment (Medical care); Subject Term: PLACEBOS (Medicine); Subject Term: RESEARCH -- Finance; Subject Term: T-test (Statistics); Subject Term: WEIGHT lifting; Subject Term: X-ray densitometry in medicine; Subject Term: SCALE items; Subject Term: EFFECT sizes (Statistics); Subject Term: ERGOGENIC aids; Subject Term: BODY movement; Subject Term: REPEATED measures design; Subject Term: BLIND experiment; Subject Term: FOOD diaries; Subject Term: ADMINISTRATION of drugs; Subject Term: DOSAGE of drugs; Author-Supplied Keyword: body composition; Author-Supplied Keyword: ergogenics; Author-Supplied Keyword: exercise; Author-Supplied Keyword: nutritional supplementation; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 446191 Food (Health) Supplement Stores; NAICS/Industry Codes: 414510 Pharmaceuticals and pharmacy supplies merchant wholesalers; NAICS/Industry Codes: 713940 Fitness and Recreational Sports Centers; Number of Pages: 9p; Illustrations: 3 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53951876&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gilbert, Kevin W. AU - Mall, Shankar AU - Leedy, Kevin D. T1 - Characterization of Gold-Gold Microcontact Behavior Using a Nanoindenter Based Setup. JO - Journal of Adhesion Science & Technology JF - Journal of Adhesion Science & Technology Y1 - 2010/10// VL - 24 IS - 15/16 M3 - Article SP - 2597 EP - 2615 PB - Taylor & Francis Ltd SN - 01694243 AB - Gold-gold microcontact behavior of MEMS switches under cycling and hot-switching conditions was characterized experimentally. A nanoindenter based experimental setup was developed where a cantilever beam with contact bump was cycled in and out of physical contact with a flat plate to simulate the action of a MEMS ohmic contact switch. This arrangement offered a simple method to simulate MEMS switches with minimum fabrication effort. Cantilever beam and flat plate were fabricated from silicon, and then sputter coated with 300 nm of gold as the contact material. All contacts failed in adhesion with lifetimes ranging from 10 000 to more than one million cycles. Three failure mechanisms of the contacting surfaces were observed: ductile separation, delamination and brittle separation with short (less than 70 000 cycles), mid (190 000-500 000 cycles) and long (more than one million cycles) life, respectively. Resistance, contact adhesion, threshold force and distance, strain hardening, and plastic deformation were monitored during cycling. Initial contamination of the contact was burnt out quickly during cycling which resulted in a constant threshold force. Contact resistance was practically constant during the cycling in all tests. Time-dependent and plastic deformations of the contact were observed, and these were initially large which then decreased to a constant value with cycling. Thus, elastic-viscoplastic material model(s) with strain hardening capability are needed for the analysis of gold-gold microcontact. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Adhesion Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTROMECHANICAL systems KW - SILICON KW - MECHANICAL movements KW - GOLD KW - STRAINS & stresses (Mechanics) KW - ADHESION FORCE KW - CONTACT RESISTANCE KW - MEMS switch KW - Micro-contact KW - nanoindenter N1 - Accession Number: 54554859; Gilbert, Kevin W. 1 Mall, Shankar 1; Email Address: Shankar.Mall@afit.edu Leedy, Kevin D. 2; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH 45433, USA. 2: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA.; Source Info: 2010, Vol. 24 Issue 15/16, p2597; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: SILICON; Subject Term: MECHANICAL movements; Subject Term: GOLD; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: ADHESION FORCE; Author-Supplied Keyword: CONTACT RESISTANCE; Author-Supplied Keyword: MEMS switch; Author-Supplied Keyword: Micro-contact; Author-Supplied Keyword: nanoindenter; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 19p; Illustrations: 6 Black and White Photographs, 2 Diagrams, 1 Chart, 10 Graphs; Document Type: Article L3 - 10.1163/016942410X508235 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54554859&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Woo, Myung-Heui AU - Hsu, Yu-Mei AU - Wu, Chang-Yu AU - Heimbuch, Brian AU - Wander, Joseph T1 - Method for contamination of filtering facepiece respirators by deposition of MS2 viral aerosols JO - Journal of Aerosol Science JF - Journal of Aerosol Science Y1 - 2010/10// VL - 41 IS - 10 M3 - Article SP - 944 EP - 952 SN - 00218502 AB - Abstract: A droplet/aerosol loading chamber was designed to deliver uniform droplets/aerosols onto substrates. An ultrasonic nebulizer was used to produce virus-containing droplets from artificial saliva to emulate those from coughing and sneezing. The operating conditions were determined by adjusting various parameters to achieve loading density and uniformity requirements. The count median diameter and mass median diameter were 0.5–2 and 3–4μm, respectively, around the loading location when 35% relative humidity was applied. The average loading density was ∼2×103 plaque-forming units/cm2 for 5-min loading time with a virus titer of 107 plaque-forming units/mL. Six different filtering facepiece respirators from commercial sources were loaded to evaluate uniform distribution. For each of the six FFRs, the virus loading uniformity within a sample and across numerous samples was 19.21% and 12.20%, respectively. This system supports a standard method for loading viable bioaerosols onto specimen surfaces when different decontamination techniques are to be compared. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerosol Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BREATHING apparatus KW - AEROSOLS (Sprays) KW - COUGH KW - SNEEZING KW - ARTIFICIAL saliva KW - HUMIDITY KW - BIOLOGICAL decontamination KW - Coughing KW - Droplet KW - Loading chamber KW - Loading density KW - Uniformity N1 - Accession Number: 53307748; Woo, Myung-Heui 1 Hsu, Yu-Mei 2 Wu, Chang-Yu 1; Email Address: cywu@ufl.edu Heimbuch, Brian 3 Wander, Joseph 4; Affiliation: 1: Department of Environmental Engineering Sciences, University of Florida, P.O. Box 116450, Gainesville, FL 32611-6450, USA 2: Wood Buffalo Environmental Association, Alberta, Canada 3: Applied Research Associates, Tyndall Air Force Base, FL, USA 4: Air Force Research Laboratory, Tyndall Air Force Base, FL, USA; Source Info: Oct2010, Vol. 41 Issue 10, p944; Subject Term: BREATHING apparatus; Subject Term: AEROSOLS (Sprays); Subject Term: COUGH; Subject Term: SNEEZING; Subject Term: ARTIFICIAL saliva; Subject Term: HUMIDITY; Subject Term: BIOLOGICAL decontamination; Author-Supplied Keyword: Coughing; Author-Supplied Keyword: Droplet; Author-Supplied Keyword: Loading chamber; Author-Supplied Keyword: Loading density; Author-Supplied Keyword: Uniformity; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jaerosci.2010.07.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53307748&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fang, Z.-Q. AU - Claflin, B. AU - Look, D. C. AU - Green, D. S. AU - Vetury, R. T1 - Deep traps in AlGaN/GaN heterostructures studied by deep level transient spectroscopy: Effect of carbon concentration in GaN buffer layers. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/10// VL - 108 IS - 6 M3 - Article SP - 063706 PB - American Institute of Physics SN - 00218979 AB - Electrical properties, including leakage currents, threshold voltages, and deep traps, of AlGaN/GaN heterostructure wafers with different concentrations of carbon in the GaN buffer layer, have been investigated by temperature dependent current-voltage and capacitance-voltage measurements and deep level transient spectroscopy (DLTS), using Schottky barrier diodes (SBDs). It is found that (i) SBDs fabricated on the wafers with GaN buffer layers containing a low concentration of carbon (low-[C] SBD) or a high concentration of carbon (high-[C] SBD) have similar low leakage currents even at 500 K; and (ii) the low-[C] SBD exhibits a larger (negative) threshold voltage than the high-[C] SBD. Detailed DLTS measurements on the two SBDs show that (i) different trap species are seen in the two SBDs: electron traps Ax (0.9 eV), A1 (0.99 eV), and A2 (1.2 eV), and a holelike trap H1 (1.24 eV) in the low-[C] SBD; and electron traps A1, A2, and A3 (∼1.3 eV), and a holelike trap H2 (>1.3 eV) in the high-[C] SBD; (ii) for both SDBs, in the region close to GaN buffer layer, only electron traps can be detected, while in the AlGaN/GaN interface region, significant holelike traps appear; and iii) all of the deep traps show a strong dependence of the DLTS signal on filling pulse width, which indicates they are associated with extended defects, such as threading dislocations. However, the overall density of electron traps is lower in the low-[C] SBD than in the high-[C] SBD. The different traps observed in the two SBDs are thought to be mainly related to differences in microstructure (grain size and threading dislocation density) of GaN buffer layers grown at different pressures. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Electric properties KW - DEEP level transient spectroscopy KW - SCHOTTKY-barrier diodes KW - MICROSTRUCTURE KW - CARBON N1 - Accession Number: 54050329; Fang, Z.-Q. 1,2; Email Address: zhaoqiang.fang@wright.edu Claflin, B. 1,2 Look, D. C. 1,2 Green, D. S. 3 Vetury, R. 3; Affiliation: 1: Semiconductor Research Center, Wright State University, Ohio 45435, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433, USA 3: Defense and Power, RF Micro Devices, Inc., Charlotte, North Carolina 28269, USA; Source Info: Oct2010, Vol. 108 Issue 6, p063706; Subject Term: MATERIALS -- Electric properties; Subject Term: DEEP level transient spectroscopy; Subject Term: SCHOTTKY-barrier diodes; Subject Term: MICROSTRUCTURE; Subject Term: CARBON; Number of Pages: 6p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.3488610 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54050329&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, G. AU - Barnes, J. L. AU - Basun, S. A. AU - Evans, D. R. AU - Ziolo, R. F. AU - Ponce, A. AU - Reshetnyak, V. Yu AU - Glushchenko, A. AU - Banerjee, P. P. T1 - Harvesting single ferroelectric domain stressed nanoparticles for optical and ferroic applications. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/10// VL - 108 IS - 6 M3 - Article SP - 064309 PB - American Institute of Physics SN - 00218979 AB - We describe techniques to selectively harvest single ferroelectric domain nanoparticles of BaTiO3 as small as 9 nm from a plethora of nanoparticles produced by mechanical grinding. High resolution transmission electron microscopy imaging shows the unidomain atomic structure of the nanoparticles and reveals compressive and tensile surface strains which are attributed to the preservation of ferroelectric behavior in these particles. We demonstrate the positive benefits of using harvested nanoparticles in disparate liquid crystal systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FERROELECTRIC devices KW - NANOPARTICLES KW - TRANSMISSION electron microscopy KW - ATOMIC structure KW - LIQUID crystal devices N1 - Accession Number: 54050358; Cook, G. 1,2 Barnes, J. L. 1,3 Basun, S. A. 1,4 Evans, D. R. 1; Email Address: dean.evans@wpafb.af.mil Ziolo, R. F. 5 Ponce, A. 5 Reshetnyak, V. Yu 6 Glushchenko, A. 7 Banerjee, P. P. 8; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Azimuth Corporation, 4134 Linden Avenue, Suite 300, Dayton, Ohio 45432, USA 3: General Dynamics, Dayton, Ohio 45431, USA 4: Universal Technology Corporation, 1270 North Fairfield Road, Dayton, Ohio 45432, USA 5: Centro de Investigación en Química Aplicada, Saltillo, Coahuila, 25250, Mexico 6: National Taras Shevchenko University of Kyiv, Kyiv, 01601, Ukraine 7: University of Colorado, Colorado Springs, Colorado 80918, USA 8: University of Dayton, Dayton, Ohio 45469, USA; Source Info: Oct2010, Vol. 108 Issue 6, p064309; Subject Term: FERROELECTRIC devices; Subject Term: NANOPARTICLES; Subject Term: TRANSMISSION electron microscopy; Subject Term: ATOMIC structure; Subject Term: LIQUID crystal devices; Number of Pages: 5p; Illustrations: 3 Color Photographs, 2 Graphs; Document Type: Article L3 - 10.1063/1.3477163 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54050358&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carretta, Thomas R. T1 - Predictive Validity of the Air Force Officer Qualifying Test for Non-Rated Officer Specialties. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2010/10//Oct-Dec2010 VL - 22 IS - 4 M3 - Article SP - 450 EP - 464 PB - Taylor & Francis Ltd SN - 08995605 AB - The Air Force Officer Qualifying Test (AFOQT) is used to qualify applicants for officer commissioning and aircrew training programs. The current study examined its predictive validity for 14 officer technical training courses for which there are no additional AFOQT minimum qualification requirements beyond those for officer commissioning. Sample sizes ranged from 16 to 2,190 with a mean and median size of 753 and 319 officers. Ninety percent (63 of 70) of the observed correlations between the AFOQT composites and average technical training grades were statistically significant. Meta-analyses were conducted to determine whether the AFOQT validities were generalizable across training specialties. Analyses were done on the observed data, after correction for range restriction, and after correction for both range restriction and criterion unreliability. The pattern of validities was similar for all three meta-analyses. The lower bound of the 95% confidence interval and the 95% credibility interval around the weighted mean validities were greater than zero for all five AFOQT composites supporting its utility for making personnel selection decisions for these jobs. The Verbal composite had the lowest and the Academic Aptitude composite had the highest weighted mean validity. The weighted mean of the validity coefficients across training specialties ranged from .261 to .326 for the observed data, .322 to .387 for the range-restriction corrected data, and .360 to .433 for the fully corrected data. Additional efforts are required to examine the generalizability of the results for a broader range of occupational specialties and to set minimum qualifying scores. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORRELATION (Statistics) KW - QUESTIONNAIRES KW - RELIABILITY (Personality trait) KW - MILITARY personnel KW - RESEARCH methodology evaluation N1 - Accession Number: 54419566; Carretta, Thomas R. 1; Email Address: Thomas.Carretta@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio.; Source Info: Oct-Dec2010, Vol. 22 Issue 4, p450; Subject Term: CORRELATION (Statistics); Subject Term: QUESTIONNAIRES; Subject Term: RELIABILITY (Personality trait); Subject Term: MILITARY personnel; Subject Term: RESEARCH methodology evaluation; Number of Pages: 15p; Illustrations: 3 Charts, 1 Graph; Document Type: Article L3 - 10.1080/08995605.2010.513261 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54419566&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bogdanov, E. A. AU - Adams, S. F. AU - Demidov, V. I. AU - Kudryavtsev, A. A. AU - Williamson, J. M. T1 - Influence of the transverse dimension on the structure and properties of dc glow discharges. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2010/10// VL - 17 IS - 10 M3 - Article SP - 103502 PB - American Institute of Physics SN - 1070664X AB - Two-dimensional (2D) simulations of a dc glow discharge with a cold cathode in argon have been performed for various radii of the discharge tube. It is shown that the loss of the charged particles to the walls can significantly affect plasma parameters as well as properties of the cathode sheath. The longitude dimensions of the negative glow and Faraday dark space depend on the transverse loss of the charge particles and are not consistently predicted with a 1D model. The common assumption that the cathode sheath can be analyzed independently of the plasma also may not be valid. The transverse inhomogeneity of the plasma leads to a change in the current density distribution over the cathode surface. The thickness of the cathode sheath can vary with radial distance from the discharge axis, even for the case of negligible radial loss of the charge particles. The 2D model results provide an analysis of the conditions of applicability of the 1D model. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GLOW discharges KW - DIRECT currents KW - ELECTRIC charge & distribution KW - PLASMA (Ionized gases) KW - COLD cathode tubes KW - ARGON KW - FARADAY effect N1 - Accession Number: 54858511; Bogdanov, E. A. 1 Adams, S. F. 2 Demidov, V. I. 3 Kudryavtsev, A. A. 4 Williamson, J. M. 5; Affiliation: 1: St. Petersburg State University, St. Petersburg 198904, 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 3: Department of Physics, West Virginia University, Morgantown, West Virginia 26506, 4: Department of Optics, St. Petersburg State University, St. Petersburg 198904, 5: UES, Inc., 4401 Dayton-Xenia Rd., Beavercreek, Ohio 45432,; Source Info: Oct2010, Vol. 17 Issue 10, p103502; Subject Term: GLOW discharges; Subject Term: DIRECT currents; Subject Term: ELECTRIC charge & distribution; Subject Term: PLASMA (Ionized gases); Subject Term: COLD cathode tubes; Subject Term: ARGON; Subject Term: FARADAY effect; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 11p; Illustrations: 2 Charts, 7 Graphs; Document Type: Article L3 - 10.1063/1.3486525 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54858511&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Isacco, Anthony AU - Garfield, Craig F. AU - Rogers, Timothy E. T1 - Correlates of Coparental Support Among Married and Nonmarried Fathers. JO - Psychology of Men & Masculinity JF - Psychology of Men & Masculinity Y1 - 2010/10// VL - 11 IS - 4 M3 - Article SP - 262 EP - 278 SN - 15249220 AB - The article offers a study on the correlates of coparenting between married and nonmarried fathers. It says that the study based 2,062 fathers enrolled at Fragile Families and Child Well-being study (FFCWS) where their perceptions of coparental support were evaluated through their involvement, marital status, and child outcomes. Moreover, it notes that the correlates of perception shows positive for married fathers in involvement and relation quality, but not on both groups' mental health. KW - JOINT custody of children KW - FATHERS KW - RESEARCH KW - UNMARRIED fathers KW - SUPPORT (Domestic relations) KW - ENGAGEMENT (Philosophy) KW - MARITAL status KW - RELATIONSHIP quality KW - PERCEPTION KW - coparental support KW - coparenting KW - father involvement KW - fathers N1 - Accession Number: 55337634; Isacco, Anthony; Email Address: aisacco@chatham.edu Garfield, Craig F. Rogers, Timothy E. 1; Affiliation: 1: United States Air Force, Holloman AFB, New Mexico; Source Info: Oct2010, Vol. 11 Issue 4, p262; Subject Term: JOINT custody of children; Subject Term: FATHERS; Subject Term: RESEARCH; Subject Term: UNMARRIED fathers; Subject Term: SUPPORT (Domestic relations); Subject Term: ENGAGEMENT (Philosophy); Subject Term: MARITAL status; Subject Term: RELATIONSHIP quality; Subject Term: PERCEPTION; Author-Supplied Keyword: coparental support; Author-Supplied Keyword: coparenting; Author-Supplied Keyword: father involvement; Author-Supplied Keyword: fathers; Number of Pages: 17p; Document Type: Article L3 - 10.1037/a0020686 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55337634&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Xie, Jiakang T1 - Can We Improve Estimates of Seismological Q Using a New “Geometrical Spreading” Model? JO - Pure & Applied Geophysics JF - Pure & Applied Geophysics Y1 - 2010/10// VL - 167 IS - 10 M3 - Article SP - 1147 EP - 1162 PB - Springer Science & Business Media B.V. SN - 00334553 AB - Precise measurements of seismological Q are difficult because we lack detailed knowledge on how the Earth’s fine velocity structure affects the amplitude data. In a number of recent papers, Morozov (Geophys J Int 175:239–252, ; Seism Res Lett 80:5–7, ; Pure Appl Geophys, this volume, ) proposes a new procedure intended to improve Q determinations. The procedure relies on quantifying the structural effects using a new form of geometrical spreading (GS) model that has an exponentially decaying component with time, e·γ is a free parameter and is measured together with Q. Morozov has refit many previously published sets of amplitude attenuation data. In general, the new Q estimates are much higher than previous estimates, and all of the previously estimated frequency-dependence values for Q disappear in the new estimates. In this paper I show that (1) the traditional modeling of seismic amplitudes is physically based, whereas the new model lacks a physical basis; (2) the method of measuring Q using the new model is effectively just a curve fitting procedure using a first-order Taylor series expansion; (3) previous high-frequency data that were fit by a power-law frequency dependence for Q are expected to be also fit by the first-order expansion in the limited frequency bands involved, because of the long tails of power-law functions; (4) recent laboratory measurements of intrinsic Q of mantle materials at seismic frequencies provide independent evidence that intrinsic Q is often frequency-dependent, which should lead to frequency-dependent total Q; (5) published long-period surface wave data that were used to derive several recent Q models inherently contradict the new GS model; and (6) previous modeling has already included a special case that is mathematically identical to the new GS model, but with physical assumptions and measured Q values that differ from those with the new GS model. Therefore, while individually the previous Q measurements have limited precision, they cannot be improved by using the new GS model. The large number of Q measurements by seismologists are sufficient to show that Q values in the Earth are highly laterally variable and are often frequency dependent. [ABSTRACT FROM AUTHOR] AB - Copyright of Pure & Applied Geophysics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEISMOLOGY -- Research KW - ATTENUATION (Physics) KW - CURVE fitting KW - TAYLOR'S series KW - GEOMETRIC modeling KW - EARTH (Planet) KW - 3D earth structure KW - focusing KW - multipathing KW - Q KW - seismic amplitude KW - Seismic attenuation N1 - Accession Number: 53531367; Xie, Jiakang 1; Email Address: afrl.rvb.pa@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Hanscom Air Force Base, 29 Randolph Road Bedford 01731 USA; Source Info: Oct2010, Vol. 167 Issue 10, p1147; Subject Term: SEISMOLOGY -- Research; Subject Term: ATTENUATION (Physics); Subject Term: CURVE fitting; Subject Term: TAYLOR'S series; Subject Term: GEOMETRIC modeling; Subject Term: EARTH (Planet); Author-Supplied Keyword: 3D earth structure; Author-Supplied Keyword: focusing; Author-Supplied Keyword: multipathing; Author-Supplied Keyword: Q; Author-Supplied Keyword: seismic amplitude; Author-Supplied Keyword: Seismic attenuation; Number of Pages: 16p; Illustrations: 1 Color Photograph, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1007/s00024-010-0188-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53531367&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - POMEROY, STEVEN T1 - Truth, Lies, and O-Rings: Inside the Space Shuttle Challenger Disaster. JO - Technology & Culture JF - Technology & Culture Y1 - 2010/10// VL - 51 IS - 4 M3 - Book Review SP - 1038 EP - 1040 SN - 0040165X AB - The article reviews the book "Truth, Lies, and O-Rings: Inside the Space Shuttle Challenger Disaster," by Allan J. McDonald. KW - CHALLENGER (Spacecraft) Disaster, 1986 KW - NONFICTION KW - MCDONALD, Allan J. KW - TRUTH, Lies & O-Rings: Inside the Space Shuttle Challenger Disaster (Book) N1 - Accession Number: 70134402; POMEROY, STEVEN 1; Affiliation: 1: Assistant Professor of Military and Strategic Studies, United States Air Force Academy.; Source Info: Oct2010, Vol. 51 Issue 4, p1038; Subject Term: CHALLENGER (Spacecraft) Disaster, 1986; Subject Term: NONFICTION; Reviews & Products: TRUTH, Lies & O-Rings: Inside the Space Shuttle Challenger Disaster (Book); People: MCDONALD, Allan J.; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=70134402&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dimiduk, D. M. AU - Nadgorny, E. M. AU - Woodward, C. AU - Uchic, M. D. AU - Shade, P. A. T1 - An experimental investigation of intermittent flow and strain burst scaling behavior in LiF crystals during microcompression testing. JO - Philosophical Magazine JF - Philosophical Magazine Y1 - 2010/09/21/ VL - 90 IS - 27/28 M3 - Article SP - 3621 EP - 3649 SN - 14786435 AB - The first experimental statistical study is reported of intermittent plastic deformation of LiF microscopic samples having low initial dislocation densities, in both as-grown and gamma-irradiated conditions. The investigations used the microcompression testing method. Data sets were evaluated independently for the loading and flow deformation stages for each material. Investigations selectively examined evolution of the strain-burst response in both the spatial and temporal domains. A revised analysis technique provided advances in quantitative evaluations of the statistical experimental data relative to previous studies. Platen displacement event cumulative probability distributions exhibited both Gaussian regimes at small displacements and power law regimes for event displacement, duration and average velocity at larger sizes. However, the observed event size scaling exponents did not follow the expectation from mean-field theory, revealing scaling exponents in the range 1.8-2.9. Additionally, extraordinarily large displacement events were observed that exceeded the sizes of those found in previous studies by at least 10 times. Quantitative clarification of the power-law exponent values and their dependence on deforming sample conditions demands both further experimental studies with larger numbers of samples and a wider range of sample conditions. Such studies would benefit from better matching of the time scales of dislocation processes and observation and, still further improvements to the data analysis methods. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Magazine is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - DEFORMATIONS (Mechanics) KW - DISLOCATIONS in crystals KW - GAUSSIAN distribution KW - DATA analysis KW - INTERMITTENCY (Nuclear physics) KW - dislocation mechanism KW - intermittency KW - microcompression KW - scale-free flow KW - size effect N1 - Accession Number: 52889713; Dimiduk, D. M. 1; Email Address: dennis.dimiduk@wpafb.af.mil Nadgorny, E. M. 2 Woodward, C. 1 Uchic, M. D. 1 Shade, P. A. 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, OH 45433-7817, USA 2: Department of Physics, Michigan Technological University, Houghton, MI 49931, USA 3: UTC, Dayton, OH 45432, USA; Source Info: Sep2010, Vol. 90 Issue 27/28, p3621; Subject Term: STRAINS & stresses (Mechanics); Subject Term: DEFORMATIONS (Mechanics); Subject Term: DISLOCATIONS in crystals; Subject Term: GAUSSIAN distribution; Subject Term: DATA analysis; Subject Term: INTERMITTENCY (Nuclear physics); Author-Supplied Keyword: dislocation mechanism; Author-Supplied Keyword: intermittency; Author-Supplied Keyword: microcompression; Author-Supplied Keyword: scale-free flow; Author-Supplied Keyword: size effect; Number of Pages: 29p; Illustrations: 1 Black and White Photograph, 1 Chart, 13 Graphs; Document Type: Article L3 - 10.1080/14786431003662572 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52889713&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tokish, John M. AU - McBratney, Colleen M. AU - Solomon, Daniel J. AU - LeClere, Lance AU - Dewing, Christopher B. AU - Provencher, Matthew T. T1 - Arthroscopic Repair of Circumferential Lesions of the Glenoid Labrum. JO - Journal of Bone & Joint Surgery, American Volume JF - Journal of Bone & Joint Surgery, American Volume Y1 - 2010/09/16/Sep2010 Supplement VL - 92 M3 - Article SP - 130 EP - 144 SN - 00219355 AB - BACKGROUND: Symptomatic pan-labral or circumferential (3600) tears of the glenohumeral labrum are an uncommon injury. The purpose of the present study was to report the results of surgical treatment of circumferential lesions of the glenoid labrum with use of validated outcome instruments. METHODS: From July 2003 to May 2006, forty-one shoulders in thirty-nine patients (thirty-four men and five women) with a mean age of 25.1 years were prospectively enrolled in a multicenter study and were managed for a circumferential (360°) lesion of the glenoid labrum. All patients had a primary diagnosis of pain and recurrent shoulder instability, and all underwent arthroscopic repair of the circumferential labral tear with a mean of 7.1 suture anchors. The outcomes for thirty-nine of the forty-one shoulders were assessed after a mean duration of follow-up of 31.8 months on the basis of the rating of pain and instability on a scale of 0 to 10, a physical examination, and three outcome instruments (the Single Assessment Numeric Evaluation score, the modified American Shoulder and Elbow Surgeons score, and the Short Form-12 score). RESULTS: Significant improvement was noted in terms of the mean pain score (from 4.3 to 1.1), the mean instability score (from 7.3 to 0.2), the mean modified American Shoulder and Elbow Surgeons score (from 55.5 to 89.6), the mean Short Form-12 score (from 75.7 to 90.0), and the mean Single Assessment Numeric Evaluation score (from 36.7 to 88.5). Six shoulders required revision surgery because of recurrent instability (two), recalcitrant biceps tendinitis (two), or postoperative tightness (two). All patients returned to their preinjury activity level. CONCLUSIONS: Pan-labral or circumferential lesions are an uncommon yet extensive injury of the glenohumeral joint that may result in recurrent instability and pain. The present study demonstrates that arthroscopic capsulolabral repair with suture anchor fixation can restore the stability of the glenohumeral joint and can provide a reliable improvement in subjective and objective outcome measures. LEVEL OF EVIDENCE: Therapeutic Level IV. See Instructions to Authors for a complete description of levels of evidence. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Bone & Joint Surgery, American Volume is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WOUNDS & injuries -- Treatment KW - RESEARCH KW - GLENOHUMERAL joint KW - SURGERY KW - SUTURES KW - SHOULDER dislocations -- Treatment N1 - Accession Number: 53993781; Tokish, John M. 1 McBratney, Colleen M. 1 Solomon, Daniel J. 1 LeClere, Lance 1 Dewing, Christopher B. 1 Provencher, Matthew T. 1; Affiliation: 1: Investigation performed at the United States Air Force Academy, Colorado Springs, Colorado, and the Naval Medical Center San Diego, San Diego, California; Source Info: Sep2010 Supplement, Vol. 92, p130; Subject Term: WOUNDS & injuries -- Treatment; Subject Term: RESEARCH; Subject Term: GLENOHUMERAL joint; Subject Term: SURGERY; Subject Term: SUTURES; Subject Term: SHOULDER dislocations -- Treatment; NAICS/Industry Codes: 339113 Surgical Appliance and Supplies Manufacturing; Number of Pages: 15p; Illustrations: 4 Color Photographs; Document Type: Article L3 - 10.2106/JBJSJ.00234 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53993781&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Konkova, T. AU - Mironov, S. AU - Korznikov, A. AU - Semiatin, S.L. T1 - Microstructural response of pure copper to cryogenic rolling JO - Acta Materialia JF - Acta Materialia Y1 - 2010/09/15/ VL - 58 IS - 16 M3 - Article SP - 5262 EP - 5273 SN - 13596454 AB - Abstract: A high-resolution electron backscatter diffraction technique was applied to quantify grain-structure development and texture evolution during/after cryogenic rolling of pure copper. Microstructure evolution was found to be a complex process involving mainly geometrical effects associated with strain and discontinuous recrystallization but also including limited twinning and grain subdivision. Recrystallization was deduced to be static in nature and probably occurred during static storage of the material at room temperature after cryogenic rolling. The texture contained a pronounced {110}〈112〉 brass component; this observation was interpreted in terms of the suppression of cross-slip at cryogenic temperatures. In general, cryogenic rolling was found to be ineffective for the formation of a nanocrystalline structure in pure copper. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - COPPER alloys KW - METALWORK KW - ELECTRONS -- Backscattering KW - MATERIALS -- Texture KW - STRAINS & stresses (Mechanics) KW - RECRYSTALLIZATION (Metallurgy) KW - Copper KW - Electron backscatter diffraction KW - Microstructure KW - Nanocrystalline materials KW - Texture N1 - Accession Number: 52861413; Konkova, T. 1 Mironov, S. 1,2; Email Address: smironov@material.tohoku.ac.jp Korznikov, A. 1 Semiatin, S.L. 3; Affiliation: 1: Institute for Metals Superplasticity Problems, Russian Academy of Science, 39 Khalturin Str., Ufa 450001, Russia 2: Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Sendai 980-8579, Japan 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLM, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Sep2010, Vol. 58 Issue 16, p5262; Subject Term: MICROSTRUCTURE; Subject Term: COPPER alloys; Subject Term: METALWORK; Subject Term: ELECTRONS -- Backscattering; Subject Term: MATERIALS -- Texture; Subject Term: STRAINS & stresses (Mechanics); Subject Term: RECRYSTALLIZATION (Metallurgy); Author-Supplied Keyword: Copper; Author-Supplied Keyword: Electron backscatter diffraction; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Nanocrystalline materials; Author-Supplied Keyword: Texture; NAICS/Industry Codes: 331410 Nonferrous Metal (except Aluminum) Smelting and Refining; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.actamat.2010.05.056 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52861413&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aouadi, S.M. AU - Singh, D.P. AU - Stone, D.S. AU - Polychronopoulou, K. AU - Nahif, F. AU - Rebholz, C. AU - Muratore, C. AU - Voevodin, A.A. T1 - Adaptive VN/Ag nanocomposite coatings with lubricious behavior from 25 to 1000°C JO - Acta Materialia JF - Acta Materialia Y1 - 2010/09/15/ VL - 58 IS - 16 M3 - Article SP - 5326 EP - 5331 SN - 13596454 AB - Abstract: A two-phase nanocomposite coating that consists of inclusions of silver in a vanadium nitride matrix (VN/Ag) was investigated as a potential adaptive coating with a reduced friction coefficient from 25 to 1000°C. This nanocomposite structure was selected based on the premise that silver and silver vanadate phases would form on the surface of these coatings, reducing their friction coefficient in the (i) room to mid-range and (ii) mid-range to high temperatures, respectively. Silver and vanadium were expected to react with oxygen at high temperatures and create a lubricious silver vanadate film on the coating. The VN/Ag coatings were deposited using unbalanced magnetron sputtering and their elemental composition was evaluated using X-ray photoelectron spectroscopy. The tribological properties of the materials against Si3N4 balls were investigated at different temperatures. The lowest friction coefficients recorded for samples with identical compositions were 0.35, 0.30, 0.10 and 0.20 at 25, 350, 700 and 1000°C, respectively. Post-wear testing Raman spectroscopy and X-ray diffraction (XRD) measurements revealed the formation of silver vanadate compounds on the surface of these coatings. In addition, real time Raman spectroscopy and high temperature XRD revealed that silver vanadate, vanadium oxide and elemental silver formed on the surface of these coatings upon heating to 1000°C. Upon cooling, silver and vanadium oxide were found to combine at about 400°C, leading predominantly to the formation of silver vanadate phases on the surface of these materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOCOMPOSITE materials KW - METAL coating KW - VANADIUM KW - HIGH temperatures KW - MAGNETRON sputtering KW - PHOTOELECTRON spectroscopy KW - FRICTION KW - SILVER KW - Friction KW - Nanocomposite KW - Oxides KW - Raman spectroscopy KW - Tribology N1 - Accession Number: 52861419; Aouadi, S.M. 1; Email Address: saouadi@physics.siu.edu Singh, D.P. 1 Stone, D.S. 1 Polychronopoulou, K. 2,3 Nahif, F. 2 Rebholz, C. 1,2 Muratore, C. 4 Voevodin, A.A. 4; Affiliation: 1: Department of Physics, Southern Illinois University, Carbondale, IL 62901, USA 2: Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia 1678, Cyprus 3: Department of Chemistry, University of Cyprus, Nicosia 1678, Cyprus 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Sep2010, Vol. 58 Issue 16, p5326; Subject Term: NANOCOMPOSITE materials; Subject Term: METAL coating; Subject Term: VANADIUM; Subject Term: HIGH temperatures; Subject Term: MAGNETRON sputtering; Subject Term: PHOTOELECTRON spectroscopy; Subject Term: FRICTION; Subject Term: SILVER; Author-Supplied Keyword: Friction; Author-Supplied Keyword: Nanocomposite; Author-Supplied Keyword: Oxides; Author-Supplied Keyword: Raman spectroscopy; Author-Supplied Keyword: Tribology; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.actamat.2010.06.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52861419&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chávez, Jorge L. AU - Lyon, Wanda AU - Kelley-Loughnane, Nancy AU - Stone, Morley O. T1 - Theophylline detection using an aptamer and DNA–gold nanoparticle conjugates JO - Biosensors & Bioelectronics JF - Biosensors & Bioelectronics Y1 - 2010/09/15/ VL - 26 IS - 1 M3 - Article SP - 23 EP - 28 SN - 09565663 AB - Abstract: A detection system for theophylline that combined the recognition properties of an aptamer and the plasmonic response of gold nanoparticles (AuNPs) is presented. The aptamer was used as a linker for AuNPs functionalized with complementary sequences to the aptamer (DNA–AuNPs), producing supramolecular complexes that disassemble when exposed to theophylline due to aptamer binding. The detection event was reported as a change in the AuNPs plasmonic peak and intensity. Addition of a spacer on the DNA immobilized on the AuNPs facing the aptamer binding site improved the aggregates’ response, doubling the detection range of system response to theophylline. Modification of the oligonucleotides immobilized on the AuNPs that reduced the interparticle distance in the aggregated state suppressed their response to theophylline and addition of the spacer recovered it. This work demonstrated that the design of oligonucleotides immobilized on the AuNPs could be used to improve their plasmonic response without affecting aptamer performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Biosensors & Bioelectronics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THEOPHYLLINE KW - DNA KW - COLLOIDAL gold KW - NANOPARTICLES KW - COLORIMETRIC analysis KW - OLIGONUCLEOTIDES KW - Aptamer KW - Colorimetric KW - Gold nanoparticles KW - Spacer effect KW - Theophylline N1 - Accession Number: 53572278; Chávez, Jorge L. 1 Lyon, Wanda 1 Kelley-Loughnane, Nancy 1 Stone, Morley O.; Email Address: Morley.Stone@wpafb.af.mil; Affiliation: 1: Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Sep2010, Vol. 26 Issue 1, p23; Subject Term: THEOPHYLLINE; Subject Term: DNA; Subject Term: COLLOIDAL gold; Subject Term: NANOPARTICLES; Subject Term: COLORIMETRIC analysis; Subject Term: OLIGONUCLEOTIDES; Author-Supplied Keyword: Aptamer; Author-Supplied Keyword: Colorimetric; Author-Supplied Keyword: Gold nanoparticles; Author-Supplied Keyword: Spacer effect; Author-Supplied Keyword: Theophylline; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.bios.2010.04.049 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53572278&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kidane, Addis AU - Chalivendra, Vijaya B. AU - Shukla, Arun AU - Chona, Ravi T1 - Mixed-mode dynamic crack propagation in graded materials under thermo-mechanical loading JO - Engineering Fracture Mechanics JF - Engineering Fracture Mechanics Y1 - 2010/09/15/ VL - 77 IS - 14 M3 - Article SP - 2864 EP - 2880 SN - 00137944 AB - Abstract: Mixed-mode dynamic crack growth behavior in functionally graded materials (FGMs) under thermo-mechanical loading is studied. Asymptotic analysis in conjunction with displacement potentials has been used to develop thermo-mechanical stress fields for a mixed mode propagating crack in a FGM. The shear modulus, mass density, thermal conductivity and coefficient of thermal expansion of the FGM are assumed to vary exponentially along the gradation direction. First, asymptotic temperature fields are derived for an exponential variation of thermal conductivity and later these temperature fields are used in deriving stress fields. Using asymptotic thermo-mechanical stress fields the variation of maximum shear stress, circumferential stress and strain-energy density as a function of temperature around the crack tip are generated. Finally, utilizing the minimum strain-energy density criterion and the maximum circumferential stress criterion, the crack growth direction for various crack-tip speeds, non-homogeneity coefficients and temperature fields are determined. [ABSTRACT FROM AUTHOR] AB - Copyright of Engineering Fracture Mechanics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRACTURE mechanics KW - FUNCTIONALLY gradient materials KW - LOADS (Mechanics) KW - THERMAL expansion KW - THERMAL conductivity KW - STRAINS & stresses (Mechanics) KW - SHEAR (Mechanics) KW - TEMPERATURE effect KW - Crack growth KW - Dynamic fracture KW - Functionally graded materials KW - Mixed mode KW - Thermo-mechanical loading N1 - Accession Number: 53389031; Kidane, Addis 1; Email Address: addis@caltech.edu Chalivendra, Vijaya B. 2 Shukla, Arun 3 Chona, Ravi 4; Affiliation: 1: Graduate Aeronautical Laboratory, California Institute of Technology, Pasadena, CA 91125, USA 2: Department of Mechanical Engineering, University of Massachusetts Dartmouth, North Dartmouth, MA 02747, USA 3: Dynamic Photomechanics Laboratory, Department of Mechanical Engineering, University of Rhode Island, Kingston, RI 02881, USA 4: Structural Sciences Center, Air Vehicles Directorate, US Air Force Research Laboratory, Wright Patterson AFB, OH 45433-7402, USA; Source Info: Sep2010, Vol. 77 Issue 14, p2864; Subject Term: FRACTURE mechanics; Subject Term: FUNCTIONALLY gradient materials; Subject Term: LOADS (Mechanics); Subject Term: THERMAL expansion; Subject Term: THERMAL conductivity; Subject Term: STRAINS & stresses (Mechanics); Subject Term: SHEAR (Mechanics); Subject Term: TEMPERATURE effect; Author-Supplied Keyword: Crack growth; Author-Supplied Keyword: Dynamic fracture; Author-Supplied Keyword: Functionally graded materials; Author-Supplied Keyword: Mixed mode; Author-Supplied Keyword: Thermo-mechanical loading; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.engfracmech.2010.07.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53389031&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - White, Timothy J. AU - Bricker, Rebecca L. AU - Natarajan, Lalgudi V. AU - Tondiglia, Vincent P. AU - Bailey, Christopher AU - Green, Lisa AU - Li, Quan AU - Bunning, Timothy J. T1 - Electromechanical and light tunable cholesteric liquid crystals JO - Optics Communications JF - Optics Communications Y1 - 2010/09/15/ VL - 283 IS - 18 M3 - Article SP - 3434 EP - 3436 SN - 00304018 AB - Abstract: A light-responsive cholesteric liquid crystal (CLC) mixture is tuned with light and applied DC electric field. Interestingly, the reflection of the CLC is red shifted with UV light and blue shifted with applied DC electric fields. UV light exposure induces a red shift in the reflection of the CLC bandgap by as much as 800nm from the original spectral position. Spatial variations in pitch (and thus reflection color) are shown to blue shift with applied DC field regardless of the photohistory and restore the notch position or image upon removal of the field. The ability to tune the reflection of the CLC bandgap on demand to the red or blue with multiple stimuli is a never before demonstrated effect that could have potential utility in lasing, optical filtering, or data communication applications. [Copyright &y& Elsevier] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TUNABLE lasers KW - LIQUID crystals KW - ELECTRIC fields KW - ULTRAVIOLET radiation KW - ENERGY gaps (Physics) KW - RED shift KW - IMAGE processing KW - OPTICAL communications N1 - Accession Number: 51848372; White, Timothy J. 1; Email Address: timothy.white2@wpafb.af.mil Bricker, Rebecca L. 1,2 Natarajan, Lalgudi V. 1,3 Tondiglia, Vincent P. 1,3 Bailey, Christopher 1,4 Green, Lisa 5 Li, Quan 5 Bunning, Timothy J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, 3005 Hobson Way Ste. 1, Wright Patterson Air Force Base, OH 45433, USA 2: SOCHE Inc., Dayton, OH 45433, USA 3: Science Applications International Corporation, Dayton, OH 45433, USA 4: National Research Corporation, Dayton, OH 45433, USA 5: Kent State University, Liquid Crystal Institute, Kent, OH 44242, USA; Source Info: Sep2010, Vol. 283 Issue 18, p3434; Subject Term: TUNABLE lasers; Subject Term: LIQUID crystals; Subject Term: ELECTRIC fields; Subject Term: ULTRAVIOLET radiation; Subject Term: ENERGY gaps (Physics); Subject Term: RED shift; Subject Term: IMAGE processing; Subject Term: OPTICAL communications; NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 812922 One-Hour Photofinishing; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.optcom.2010.04.057 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51848372&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - French, David M. AU - Hoff, Brad W. AU - Lau, Y. Y. AU - Gilgenbach, R. M. T1 - Negative, positive, and infinite mass properties of a rotating electron beam. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/09/13/ VL - 97 IS - 11 M3 - Article SP - 111501 PB - American Institute of Physics SN - 00036951 AB - An electron rotating under a uniform axial magnetic field and a radial electric field exhibits an effective mass that may be negative, positive, or infinite, in response to an azimuthal electric field. This paper reports simulation results that show instability and stability when the effective mass are negative and positive, respectively, depending on the magnitude and orientation of the radial electric field. Thus, the inverted magnetron would have a much faster startup than the conventional magnetron, an important consideration for pulsed operation. When the effective mass is infinite, the electrons hardly respond to an azimuthal ac electric field. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON beams KW - MASS (Physics) KW - MAGNETIC fields KW - ELECTRIC fields KW - MAGNETRONS N1 - Accession Number: 53768703; French, David M. 1 Hoff, Brad W. 2 Lau, Y. Y. 1; Email Address: yylau@umich.edu Gilgenbach, R. M. 1; Affiliation: 1: Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109-2104, USA. 2: Air Force Research Laboratory, Kirtland AFB, Albuquerque, New Mexico 87117, USA.; Source Info: 9/13/2010, Vol. 97 Issue 11, p111501; Subject Term: ELECTRON beams; Subject Term: MASS (Physics); Subject Term: MAGNETIC fields; Subject Term: ELECTRIC fields; Subject Term: MAGNETRONS; Number of Pages: 3p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.3488833 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53768703&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cui, Yunlong AU - Roy, Utpal N. AU - Bhattacharya, Pijush AU - Parker, Adrian AU - Burger, Arnold AU - Goldstein, Jonathan T. T1 - Raman spectroscopy study of AgGaSe2, AgGa0.9In0.1Se2, and AgGa0.8In0.2Se2 crystals JO - Solid State Communications JF - Solid State Communications Y1 - 2010/09/08/ VL - 150 IS - 35/36 M3 - Article SP - 1686 EP - 1689 SN - 00381098 AB - Abstract: AgGaSe2, AgGa0.9In0.1Se2, and AgGa0.8In0.2Se2 single crystals grown by the horizontal Bridgman technique were studied utilizing Raman spectroscopy excited with 633- and 784-nm lasers at temperatures varied from 77 to 300 K. The resonant Raman scattering associated with a transition from the (B) of the valence band to the conduction band of AgGa0.9In0.1Se2crystal is demonstrated. Resonant enhancements of the longitudinal optical (LO) polar modes of (or E) including , , , and , and their overtones and combinations in the crystal at 77 K were observed. [ABSTRACT FROM AUTHOR] AB - Copyright of Solid State Communications is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN spectroscopy KW - SILVER compounds KW - CRYSTALS KW - SEMICONDUCTORS KW - CHALCOPYRITE crystals KW - VALENCE (Chemistry) KW - A. Chalcopyrites KW - A. Semiconductor KW - C. Raman spectroscopy N1 - Accession Number: 52861612; Cui, Yunlong 1; Email Address: ycui@fisk.edu Roy, Utpal N. 1 Bhattacharya, Pijush 1 Parker, Adrian 1 Burger, Arnold 1 Goldstein, Jonathan T. 2; Affiliation: 1: Physics Department, Fisk University, Nashville, TN 37208, United States 2: Air Force Research Laboratory, Wright Patterson Air Force Base (WPAFB), OH 45433, United States; Source Info: Sep2010, Vol. 150 Issue 35/36, p1686; Subject Term: RAMAN spectroscopy; Subject Term: SILVER compounds; Subject Term: CRYSTALS; Subject Term: SEMICONDUCTORS; Subject Term: CHALCOPYRITE crystals; Subject Term: VALENCE (Chemistry); Author-Supplied Keyword: A. Chalcopyrites; Author-Supplied Keyword: A. Semiconductor; Author-Supplied Keyword: C. Raman spectroscopy; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.ssc.2010.06.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52861612&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pandey, R. B. AU - Heinz, Hendrik AU - Feng, Jie AU - Farmer, Barry L. T1 - Biofunctionalization and immobilization of a membrane via peptide binding (CR3-1, S2) by a Monte Carlo simulation. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2010/09/07/ VL - 133 IS - 9 M3 - Article SP - 095102 PB - American Institute of Physics SN - 00219606 AB - A coarse-grained computer simulation model is used to study the immobilization of a dynamic tethered membrane (representation of a clay platelet) in a matrix of mobile peptide chains CR3-1:1Trp[Single_Bond]2Pro[Single_Bond]3Ser[Single_Bond]4Ser[Single_Bond]5Tyr[Single_Bond]6Leu[Single_Bond]7Ser[Single_Bond]8Pro[Single_Bond]9Ile[Single_Bond]10Pro[Single_Bond]11Tyr[Single_Bond]12Ser and S2:1His[Single_Bond]2Gly[Single_Bond]3Ile[Single_Bond]4Asn[Single_Bond]5Thr[Single_Bond]6Thr[Single_Bond]7Lys[Single_Bond]8Pro[Single_Bond]9Phe[Single_Bond]10Lys[Single_Bond]11Ser[Single_Bond]12Val on a cubic lattice. Each residue interacts with the membrane nodes with appropriate interaction and executes their stochastic motion with the Metropolis algorithm. Density profiles, binding energy of each residue, mobility, and targeted structural profile are analyzed as a function of peptide concentration. We find that the binding of peptides S2 is anchored by lysine residues (7Lys,10Lys) while peptides CR3-1 do not bind to membrane. The membrane slows down as peptides (S2) continues to bind leading to its eventual pinning. How fast the immobilization of the membrane occurs depends on peptide concentration. Binding of peptide (S2) modulates the morphology of the membrane. The immobilization of membrane occurs faster if peptides (S2) are replaced by the homopolymer of lysine ([Lys]12 of the same molecular weight), the strongest binding residue. The surface of membrane can be patterned with somewhat reduced roughness with the homopolymer of lysine than that with peptide (S2). [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOLOGICAL membranes KW - PEPTIDES KW - LYSINE KW - MONTE Carlo method KW - COMPUTER simulation KW - MORPHOLOGY N1 - Accession Number: 53472868; Pandey, R. B. 1 Heinz, Hendrik 2 Feng, Jie 2 Farmer, Barry L. 3; Affiliation: 1: Department of Physics and Astronomy, University of Southern Mississippi, Hattiesburg, Mississippi 39406, 2: Department of Polymer Engineering, University of Akron, Akron, Ohio 44325, 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXBP, Wright-Patterson AFB, Ohio 45433,; Source Info: 9/7/2010, Vol. 133 Issue 9, p095102; Subject Term: BIOLOGICAL membranes; Subject Term: PEPTIDES; Subject Term: LYSINE; Subject Term: MONTE Carlo method; Subject Term: COMPUTER simulation; Subject Term: MORPHOLOGY; Number of Pages: 6p; Illustrations: 2 Diagrams, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.3484241 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53472868&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Peri, Someswara R. AU - Habersberger, Brian AU - Akgun, Bulent AU - Jiang, Hao AU - Enlow, Jesse AU - Bunning, Timothy J. AU - Majkrzak, Charles F. AU - Foster, Mark D. T1 - Variations in cross-link density with deposition pressure in ultrathin plasma polymerized benzene and octafluorocyclobutane films JO - Polymer JF - Polymer Y1 - 2010/09/03/ VL - 51 IS - 19 M3 - Article SP - 4390 EP - 4397 SN - 00323861 AB - Abstract: Neutron reflectometry (NR) measurements of ultrathin films from octafluorocyclobutane (OFCB) and benzene (B) precursors deposited using Plasma Enhanced Chemical Vapor Deposition (PECVD) at two pressures (0.6 and 0.05 torr) reveal that under both deposition conditions there are a 7 nm-thick surface layer and an approximately 1 nm-thick transition layer next to the substrate which have structures different than those in the middle of the film. NR measurements of films swollen with solvent reveal that the density of cross-linking next to the substrate is lower than that in the middle of the film or the region adjacent to the surface of the film for both precursors. Variations in the cross-link density with processing pressure are much stronger for PP-B films than for PP-OFCB films. (English) [ABSTRACT FROM AUTHOR] AB - Abstract: Neutron reflectometry (NR) measurements of ultrathin films from octafluorocyclobutane (OFCB) and benzene (B) precursors deposited using Plasma Enhanced Chemical Vapor Deposition (PECVD) at two pressures (0.6 and 0.05 torr) reveal that under both deposition conditions there are a 7 nm-thick surface layer and an approximately 1 nm-thick transition layer next to the substrate which have structures different than those in the middle of the film. NR measurements of films swollen with solvent reveal that the density of cross-linking next to the substrate is lower than that in the middle of the film or the region adjacent to the surface of the film for both precursors. Variations in the cross-link density with processing pressure are much stronger for PP-B films than for PP-OFCB films. (German) [Copyright 2010 Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CROSSLINKED polymers KW - PRESSURE KW - PLASMA polymerization KW - BENZENE KW - CYCLOBUTANE KW - THIN films KW - PLASMA-enhanced chemical vapor deposition KW - DENSITY KW - Cross-link density KW - Neutron reflectometry KW - Plasma enhanced chemical vapor deposition N1 - Accession Number: 53385461; Peri, Someswara R. 1 Habersberger, Brian 1 Akgun, Bulent 2,3 Jiang, Hao 4 Enlow, Jesse 4 Bunning, Timothy J. 4 Majkrzak, Charles F. 2 Foster, Mark D. 1; Email Address: mfoster@uakron.edu; Affiliation: 1: Department of Polymer Science, The University of Akron, 170 University Ave., Akron, OH 44325-3909, USA 2: NIST Center for Neutron Research, Gaithersburg, MD 20899, USA 3: Department of Materials Science and Engineering, University of Maryland – College Park, MD 20742, USA 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 54333, USA; Source Info: Sep2010, Vol. 51 Issue 19, p4390; Subject Term: CROSSLINKED polymers; Subject Term: PRESSURE; Subject Term: PLASMA polymerization; Subject Term: BENZENE; Subject Term: CYCLOBUTANE; Subject Term: THIN films; Subject Term: PLASMA-enhanced chemical vapor deposition; Subject Term: DENSITY; Author-Supplied Keyword: Cross-link density; Author-Supplied Keyword: Neutron reflectometry; Author-Supplied Keyword: Plasma enhanced chemical vapor deposition; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.polymer.2010.07.026 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53385461&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pin Wu AU - Ifju, Peter AU - Stanford, Bret T1 - Flapping Wing Structural Deformation and Thrust Correlation Study with Flexible Membrane Wings. JO - AIAA Journal JF - AIAA Journal Y1 - 2010/09// VL - 48 IS - 9 M3 - Article SP - 2111 EP - 2122 SN - 00011452 AB - This experimental study investigates the relationship between flapping wing structure and the production of aerodynamic forces for micro air vehicle hovering flight by measuring full-field structural deformation and thrust generation. Results from four flexible micromembrane wings with different skeletal reinforcement demonstrate that wing compliance is crucial in thrust production: only certain modes of passive aeroelastic deformation allow the wing to effectively produce thrust. The experimental setup consists of a flapping mechanism with a single-degree-of-freedom rotary actuation up to 45 Hz at 70 deg stoke amplitude and with power measurement, a force and torque sensor that measures the lift and thrust, and a digital image correlation system that consists of four cameras capable of capturing the complete stroke kinematics and structural deformation. Several technical challenges related to the experimental testing of microflapping wings are resolved in this study: primarily, flapping wings less than 3 in. in length produce loads and deformations that are difficult to measure in an accurate and nonintrusive manner. Furthermore, the synchronization of the load measurement system, the vision-based wing deformation measurement system, and the flapping mechanism is demonstrated. Intensive data analyses are performed to extract useful information from the measurements in both air and vacuum. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLAPS (Airplanes) KW - AIRPLANE wings KW - AIRPLANES -- Motors -- Thrust KW - AERODYNAMICS KW - VACUUM N1 - Accession Number: 54072902; Pin Wu 1,2; Email Address: diccidwp@ufl.edu Ifju, Peter 1,2 Stanford, Bret 1,3; Affiliation: 1: Member AIAA 2: University of Florida, Gainesville, Florida 32611 3: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45440; Source Info: Sep2010, Vol. 48 Issue 9, p2111; Subject Term: FLAPS (Airplanes); Subject Term: AIRPLANE wings; Subject Term: AIRPLANES -- Motors -- Thrust; Subject Term: AERODYNAMICS; Subject Term: VACUUM; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 12p; Illustrations: 2 Black and White Photographs, 2 Diagrams, 2 Charts, 10 Graphs; Document Type: Article L3 - 10.2514/1.J050310 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54072902&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pomeroy, Steven A. T1 - Highball! Missiles and Trains. JO - Air Power History JF - Air Power History Y1 - 2010///Fall2010 VL - 57 IS - 3 M3 - Article SP - 22 EP - 33 PB - Air Force Historical Foundation SN - 1044016X AB - The article discusses the mobile Minuteman intercontinental missile (ICBM) project, a U.S. military research effort to develop a traveling system of ICBMs within the U.S. to avoid potential hazards associated with stationary launch sites. Research to develop such technologies were begun in the 1950s during the administration of U.S. President Dwight D. Eisenhower and continued into the 1980s during the administration of U.S. President Ronald Reagan when the funding of such research ceased. Some subjects considered include the oversight of the project by the U.S. Air Force General Bernard Schriever, the development of similar ICBM technologies such as the the Atlas and Titan I ICBMs, and defense contractors RAND Corp. and Ramo-Wooldridge Corp. KW - INTERCONTINENTAL ballistic missiles -- Mobile basing KW - MINUTEMAN (Missile) KW - MILITARY research KW - HISTORY KW - INTERCONTINENTAL ballistic missiles KW - GOVERNMENT research & development contracts KW - WEAPONS systems KW - MILITARY policy KW - UNITED States. Air Force KW - UNITED States KW - UNITED States. Air Force -- History KW - UNITED States. Air Force -- Weapons systems KW - SCHRIEVER, Bernard N1 - Accession Number: 54230236; Pomeroy, Steven A. 1; Affiliation: 1: Director of Curriculum Integration, Department of Military and Strategic Studies, United States Air Force Academy; Source Info: Fall2010, Vol. 57 Issue 3, p22; Subject Term: INTERCONTINENTAL ballistic missiles -- Mobile basing; Subject Term: MINUTEMAN (Missile); Subject Term: MILITARY research; Subject Term: HISTORY; Subject Term: INTERCONTINENTAL ballistic missiles; Subject Term: GOVERNMENT research & development contracts; Subject Term: WEAPONS systems; Subject Term: MILITARY policy; Subject Term: UNITED States. Air Force; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force -- History Company/Entity: UNITED States. Air Force -- Weapons systems; NAICS/Industry Codes: 928110 National Security; People: SCHRIEVER, Bernard; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54230236&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Weller, Grant T. T1 - Remembering the Space Age: Proceedings of the 50th Anniversary Conference. JO - Air Power History JF - Air Power History Y1 - 2010///Fall2010 VL - 57 IS - 3 M3 - Book Review SP - 54 EP - 55 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "Remembering the Space Age: Proceedings of the 50th Anniversary Conference," edited by Steven J. Dick. KW - ASTRONAUTICS & civilization KW - NONFICTION KW - DICK, Steven J. KW - REMEMBERING the Space Age: Proceedings of the 50th Anniversary Conference (Book) N1 - Accession Number: 54230247; Weller, Grant T. 1; Affiliation: 1: Associate Professor of History, US. Air Force Academy; Source Info: Fall2010, Vol. 57 Issue 3, p54; Subject Term: ASTRONAUTICS & civilization; Subject Term: NONFICTION; Reviews & Products: REMEMBERING the Space Age: Proceedings of the 50th Anniversary Conference (Book); People: DICK, Steven J.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54230247&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sturrock, P.A. AU - Buncher, J.B. AU - Fischbach, E. AU - Gruenwald, J.T. AU - Javorsek, D. AU - Jenkins, J.H. AU - Lee, R.H. AU - Mattes, J.J. AU - Newport, J.R. T1 - Power spectrum analysis of BNL decay rate data JO - Astroparticle Physics JF - Astroparticle Physics Y1 - 2010/09// VL - 34 IS - 2 M3 - Article SP - 121 EP - 127 SN - 09276505 AB - Abstract: Evidence for an anomalous annual periodicity in certain nuclear decay data has led to speculation concerning a possible solar influence on nuclear processes. As a test of this hypothesis, we here search for evidence in decay data that might be indicative of a process involving solar rotation, focusing on data for 32Si and 36Cl decay rates acquired at the Brookhaven National Laboratory. Examination of the power spectrum over a range of frequencies (10–15year−1) appropriate for solar synodic rotation rates reveals several periodicities, the most prominent being one at 11.18year−1 with power 20.76. We evaluate the significance of this peak in terms of the false-alarm probability, by means of the shuffle test, and also by means of a new test (the “shake” test) that involves small random time displacements. The last two tests are the more robust, and indicate that the peak at 11.18year−1 would arise by chance only once out of about 107 trials. However, the fact that there are several peaks in the rotational search band suggests that modulation of the count rate involves several low-Q oscillations rather than a single high-Q oscillation, possibly indicative of a partly stochastic process. To pursue this possibility, we investigate the running-mean of the power spectrum, and identify a major peak at 11.93year−1 with peak running-mean power 4.08. Application of the shuffle test indicates that there is less than one chance in 1011of finding by chance a value as large as 4.08. Application of the shake test leads to a more restrictive result that there is less than one chance in 1015 of finding by chance a value as large as 4.08. We find that there is notable agreement in the running-mean power spectra in the rotational search band formed from BNL data and from ACRIM total solar irradiance data. Since rotation rate estimates derived from irradiance data have been found to be closely related to rotation rate estimates derived from low-energy solar neutrino data, this result supports the recent conjecture that solar neutrinos may be responsible for variations in nuclear decay rates. We also carry out a similar comparison with local temperature measurements, but find no similarity between power spectra formed from BNL measurements and from local temperature measurements. [Copyright &y& Elsevier] AB - Copyright of Astroparticle Physics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POWER spectra KW - SPECTRUM analysis KW - DATA analysis KW - NEUTRINOS KW - RADIOACTIVE decay KW - PROBABILITY theory KW - Neutrinos KW - Sun N1 - Accession Number: 52936972; Sturrock, P.A. 1; Email Address: sturrock@stanford.edu Buncher, J.B. 2 Fischbach, E. 2 Gruenwald, J.T. 2 Javorsek, D. 3 Jenkins, J.H. 2 Lee, R.H. 4 Mattes, J.J. 2 Newport, J.R. 2; Affiliation: 1: Center for Space Science and Astrophysics, Stanford University, Stanford, CA 94305-4060, USA 2: Department of Physics, Purdue University, West Lafayette, IN 47907, USA 3: 416th Flight Test Squadron, 412th Test Wing, Edwards AFB, CA 93524, USA 4: Department of Physics, United States Air Force Academy, CO 80920, USA; Source Info: Sep2010, Vol. 34 Issue 2, p121; Subject Term: POWER spectra; Subject Term: SPECTRUM analysis; Subject Term: DATA analysis; Subject Term: NEUTRINOS; Subject Term: RADIOACTIVE decay; Subject Term: PROBABILITY theory; Author-Supplied Keyword: Neutrinos; Author-Supplied Keyword: Sun; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.astropartphys.2010.06.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52936972&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Keren, Hila AU - Boyer, Pascal AU - Mort, Joel AU - Eilam, David T1 - Pragmatic and idiosyncratic acts in human everyday routines: The counterpart of compulsive rituals JO - Behavioural Brain Research JF - Behavioural Brain Research Y1 - 2010/09// VL - 212 IS - 1 M3 - Article SP - 90 EP - 95 SN - 01664328 AB - Abstract: Our daily activities are comprised of motor routines, which are behavioral templates with specific goals, typically performed in an automatic fixed manner and without much conscious attention. Such routines can seem to resemble pathologic rituals that dominate the motor behavior of obsessive-compulsive disorder (OCD) and autistic patients. This resemblance raises the question of what differentiates and what is common in normal and pathologic motor behavior. Indeed, pathologic motor performance is often construed as an extended stereotyped version of normal everyday routines. In this study we applied ethological tools to analyze six motor routines performed by 60 adult human volunteers. We found that longer normal everyday routines included more repetitions, but not more types of acts, and that in each routine, most acts were performed either by all individuals (pragmatic acts) or by only one individual (idiosyncratic components). Thus, normal routines consist in a relatively rigid part that is shared by all individuals that perform the routine, and a flexible part that varies among individuals. The present results, however, do not answer the question of whether the flexible individual part changes or remains constant over routine repetition by the same person. Comparing normal routines with OCD rituals revealed that the latter comprise an exaggeration of the idiosyncratic component. Altogether, the present study supports the view that everyday normal routines and pathologic rituals are opposite processes, although they both comprise rigid motor behavioral sequences. [Copyright &y& Elsevier] AB - Copyright of Behavioural Brain Research is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRAGMATICS KW - MOTOR ability KW - STEREOTYPY (Psychiatry) KW - OBSESSIVE-compulsive disorder KW - COMPULSIVE behavior KW - IDIOSYNCRATIC drug reactions KW - HUMAN behavior KW - Automaticity KW - Motor patterns KW - OCD KW - Repetitive behavior KW - Stereotypy N1 - Accession Number: 50694177; Keren, Hila 1 Boyer, Pascal 2 Mort, Joel 3 Eilam, David 1; Email Address: eilam@post.tau.ac.il; Affiliation: 1: Department of Zoology, Tel-Aviv University, Ramat-Aviv 69978, Israel 2: Departments of Psychology and Anthropology, Washington University, St. Louis, MO, USA 3: Behavioral Modeling Branch, US Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Source Info: Sep2010, Vol. 212 Issue 1, p90; Subject Term: PRAGMATICS; Subject Term: MOTOR ability; Subject Term: STEREOTYPY (Psychiatry); Subject Term: OBSESSIVE-compulsive disorder; Subject Term: COMPULSIVE behavior; Subject Term: IDIOSYNCRATIC drug reactions; Subject Term: HUMAN behavior; Author-Supplied Keyword: Automaticity; Author-Supplied Keyword: Motor patterns; Author-Supplied Keyword: OCD; Author-Supplied Keyword: Repetitive behavior; Author-Supplied Keyword: Stereotypy; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.bbr.2010.03.051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50694177&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Atapour, M. AU - Pilchak, A. AU - Frankel, G.S. AU - Williams, J.C. T1 - Corrosion behaviour of investment cast and friction stir processed Ti–6Al–4V JO - Corrosion Science JF - Corrosion Science Y1 - 2010/09// VL - 52 IS - 9 M3 - Article SP - 3062 EP - 3069 SN - 0010938X AB - Abstract: The corrosion behaviour of investment cast and friction stir (FS) processed Ti–6Al–4V alloy was studied in HCl solution. FS processing was performed with the peak temperatures both above and below the β transus. All of the samples exhibited active–passive transitions in deaerated 5% HCl at room temperature, but the β FS processed samples exhibited superior corrosion behaviour. The corrosion morphology after immersion in 20% HCl was rationalized on the basis of a difference in partitioning of the alloying elements, which controls the composition of the α and β phases. [Copyright &y& Elsevier] AB - Copyright of Corrosion Science is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM-aluminum-vanadium alloys KW - CORROSION & anti-corrosives KW - FOUNDING KW - FRICTION stir welding KW - SOLUTION (Chemistry) KW - HYDROCHLORIC acid KW - TEMPERATURE effect KW - SCANNING electron microscopy KW - A. Titanium KW - B. Polarization KW - B. SEM KW - C. Segregation N1 - Accession Number: 51921973; Atapour, M. 1,2 Pilchak, A. 1,3,4 Frankel, G.S. 1; Email Address: frankel.10@osu.edu Williams, J.C. 1; Affiliation: 1: Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA 2: Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, OH 45433, USA 4: Universal Technology Corporation, Dayton, OH 45432, USA; Source Info: Sep2010, Vol. 52 Issue 9, p3062; Subject Term: TITANIUM-aluminum-vanadium alloys; Subject Term: CORROSION & anti-corrosives; Subject Term: FOUNDING; Subject Term: FRICTION stir welding; Subject Term: SOLUTION (Chemistry); Subject Term: HYDROCHLORIC acid; Subject Term: TEMPERATURE effect; Subject Term: SCANNING electron microscopy; Author-Supplied Keyword: A. Titanium; Author-Supplied Keyword: B. Polarization; Author-Supplied Keyword: B. SEM; Author-Supplied Keyword: C. Segregation; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.corsci.2010.05.026 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51921973&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harris, M. AU - Maji, A. K. AU - deBlonk, B. J. AU - Whetzal, J. A. T1 - OPTICAL TESTING OF A DEPLOYABLE SPACE TELESCOPE. JO - Experimental Techniques JF - Experimental Techniques Y1 - 2010/09// VL - 34 IS - 5 M3 - Article SP - 52 EP - 58 SN - 07328818 AB - The article presents a study on the use of carbon fiber-epoxy composite tapes as a substitute to the aluminum truss assembly of a space telescope. It mentions the use of Moiré interferometry method as well as the resolution tests and images to measure the optical qualities of the telescope. It states that in terms of resolution, the composite tape-spring structure did not affect the optical performance of the telescope. KW - CARBON fibers KW - INTERFEROMETRY KW - SPACE telescopes KW - OPTICAL images KW - RESOLUTION (Optics) KW - MOIRE method KW - DESIGN & construction N1 - Accession Number: 54418308; Harris, M. 1 Maji, A. K. 1; Email Address: amaji@unm.edu deBlonk, B. J. 2 Whetzal, J. A. 3; Affiliation: 1: Department of Civil Engineering, University of New Mexico, Albuquerque, NM 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, NM 3: Department of Mechanical Engineering, South Dakota School of Mines and Technology, Rapid City, SD; Source Info: Sep2010, Vol. 34 Issue 5, p52; Subject Term: CARBON fibers; Subject Term: INTERFEROMETRY; Subject Term: SPACE telescopes; Subject Term: OPTICAL images; Subject Term: RESOLUTION (Optics); Subject Term: MOIRE method; Subject Term: DESIGN & construction; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 7p; Illustrations: 5 Color Photographs, 1 Black and White Photograph, 4 Diagrams, 1 Chart; Document Type: Article L3 - 10.1111/j.1747-1567.2009.00540.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54418308&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ye, Nong AU - Yau, Steve AU - Huang, Dazhi AU - Baydogan, Mustafa AU - Aranda, Billibaldo M. AU - Roontiva, Auttawut AU - Hurley, Patrick T1 - Models of dynamic relations among service activities, system state and service quality on computer and network systems. JO - Information Knowledge Systems Management JF - Information Knowledge Systems Management Y1 - 2010/09// VL - 9 IS - 2 M3 - Article SP - 99 EP - 116 PB - IOS Press SN - 13891995 AB - Service quality on computer and network systems has become increasingly important as many conventional service transactions are moved online. Service quality of computer and network services can be measured by the performance of the service process in throughput, delay, and so on. On a computer and network system, competing service requests of users and associated service activities change the state of limited system resources which in turn affects the achieved service quality. Modeling dynamic relations of service activities, system state and service quality is required to determine if users' service requests and requirements of service quality can be satisfied by the system with limited resources and how the system and service configuration can be adapted to meet service quality requirements. This paper presents our empirical study to establish activity-state-quality models for a voice communication service. We run experiments to collect system dynamics data under various service conditions and use statistical techniques to analyze experimental data and build activity-state-quality models. The results reveal four major types of dynamic relations among service activity parameters, system resource state, and the network throughput - a measure of achieved service quality for the voice communication service. Although delay-related measures are also important for voice data communication, they are not collected in this study. Five system state variables concerning the memory, CPU, process and IP resources are uncovered to be affected by service activity parameters significantly and be associated with the achieved service quality closely. We also obtain an insight about increasing the size of the buffer which holds voice data before transmission over the network to alleviate the workload on system resources and maintain the network throughout when the number of client requests and the client requirement in voice quality increase. [ABSTRACT FROM AUTHOR] AB - Copyright of Information Knowledge Systems Management is the property of IOS Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DYNAMICS KW - QUALITY of service KW - SYSTEMS theory KW - SYSTEM analysis KW - STATISTICS KW - SYSTEMS engineering KW - INDUSTRIAL engineering KW - achieved service quality KW - Computer and network service KW - service and system configuration KW - statistical analysis and modeling KW - voice communication service N1 - Accession Number: 59408465; Ye, Nong 1 Yau, Steve 1 Huang, Dazhi 1 Baydogan, Mustafa 1 Aranda, Billibaldo M. 1 Roontiva, Auttawut 1 Hurley, Patrick 2; Affiliation: 1: School of Computing, Informatics, Decision Systems Engineering, Arizona State University, Tempe, AZ 85287-8809, USA 2: U.S. Air Force Research Laboratory/RIGA, Rome, NY 13441-4505, USA; Source Info: 2010, Vol. 9 Issue 2, p99; Subject Term: DYNAMICS; Subject Term: QUALITY of service; Subject Term: SYSTEMS theory; Subject Term: SYSTEM analysis; Subject Term: STATISTICS; Subject Term: SYSTEMS engineering; Subject Term: INDUSTRIAL engineering; Author-Supplied Keyword: achieved service quality; Author-Supplied Keyword: Computer and network service; Author-Supplied Keyword: service and system configuration; Author-Supplied Keyword: statistical analysis and modeling; Author-Supplied Keyword: voice communication service; Number of Pages: 18p; Illustrations: 3 Diagrams, 5 Charts, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59408465&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Szmulowicz, F. AU - Brown, G.J. T1 - GaSb for passivating type-II InAs/GaSb superlattice mesas JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2010/09// VL - 53 IS - 5 M3 - Article SP - 305 EP - 307 SN - 13504495 AB - Abstract: The lack of stable passivation for mesa sidewalls is hampering the development of infrared focal plane arrays (FPAs) based on type-II InAs/GaSb superlattices (SL). We propose the use of GaSb itself to fill the space between FPA pixels, thus eliminating sidewalls and sidewall currents. In such a structure, the conduction band discontinuity between the SL and the GaSb encapsulant constrains electrons to move vertically between the contacts, while the low, vertical hole mobility causes holes to preferentially move transversely. Hence, this scheme (a) eliminates surface leakage currents, which improves detectivity and (b) reduces the density of excess holes in the active region of the device, which improves Shockley–Reed–Hall and direct recombination lifetimes, thereby the detector operating temperature and figures of merit. [ABSTRACT FROM AUTHOR] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDIUM arsenide KW - SUPERLATTICES KW - FOCAL planes KW - TEMPERATURE effect KW - INFRARED detectors KW - SEMICONDUCTORS KW - Focal plane array KW - InAs/GaSb KW - Infrared detector KW - Passivation KW - Superlattice N1 - Accession Number: 53408370; Szmulowicz, F. 1; Email Address: Frank.Szmulowicz@wpafb.af.mil Brown, G.J. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469-0178, USA 2: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Sep2010, Vol. 53 Issue 5, p305; Subject Term: INDIUM arsenide; Subject Term: SUPERLATTICES; Subject Term: FOCAL planes; Subject Term: TEMPERATURE effect; Subject Term: INFRARED detectors; Subject Term: SEMICONDUCTORS; Author-Supplied Keyword: Focal plane array; Author-Supplied Keyword: InAs/GaSb; Author-Supplied Keyword: Infrared detector; Author-Supplied Keyword: Passivation; Author-Supplied Keyword: Superlattice; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.infrared.2010.05.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53408370&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O.N. AU - Wilks, G.B. AU - Miracle, D.B. AU - Chuang, C.P. AU - Liaw, P.K. T1 - Refractory high-entropy alloys JO - Intermetallics JF - Intermetallics Y1 - 2010/09// VL - 18 IS - 9 M3 - Article SP - 1758 EP - 1765 SN - 09669795 AB - Abstract: Two refractory high-entropy alloys with near-equiatomic concentrations, W–Nb–Mo–Ta and W–Nb–Mo–Ta–V, were produced by vacuum arc melting. Despite containing many constituents both alloys have a single-phase body-centered cubic (BCC) structure. The lattice parameters a =3.2134(3)Å for the quaternary alloy and a =3.1832(2)Å for the quinternary alloy were determined with high-energy X-ray diffraction using a scattering vector length range from 0.7 to 20Å−1. The alloy density and Vickers microhardness were ρ =13.75g/cm3 and Hv =4455MPa for the W–Nb–Mo–Ta alloy and ρ =12.36g/cm3 and Hv =5250MPa for the W–Nb–Mo–Ta–V alloy. The exceptional microhardness in these alloys is greater than any individual constituent, suggesting the operation of a solid-solution-like strengthening mechanism. [ABSTRACT FROM AUTHOR] AB - Copyright of Intermetallics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REFRACTORY materials KW - ALLOYS KW - ENTROPY KW - CRYSTALLOGRAPHY KW - SCANNING electron microscopy KW - MICROSTRUCTURE KW - MICROHARDNESS KW - B. Alloy design KW - B. Crystallography KW - C. Casting KW - D. Microstructure KW - F. Electron microscopy, scanning N1 - Accession Number: 52305158; Senkov, O.N. 1,2; Email Address: oleg.senkov@wpafb.af.mil Wilks, G.B. 1,3 Miracle, D.B. 1 Chuang, C.P. 4 Liaw, P.K. 4; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: UES, Inc., 4401 Dayton-Xenia Rd., Dayton, OH 45432, USA 3: General Dynamics, Corp., Dayton, OH 45431, USA 4: Department of Material Science and Engineering, The University of Tennessee, Knoxville, TN 37996, USA; Source Info: Sep2010, Vol. 18 Issue 9, p1758; Subject Term: REFRACTORY materials; Subject Term: ALLOYS; Subject Term: ENTROPY; Subject Term: CRYSTALLOGRAPHY; Subject Term: SCANNING electron microscopy; Subject Term: MICROSTRUCTURE; Subject Term: MICROHARDNESS; Author-Supplied Keyword: B. Alloy design; Author-Supplied Keyword: B. Crystallography; Author-Supplied Keyword: C. Casting; Author-Supplied Keyword: D. Microstructure; Author-Supplied Keyword: F. Electron microscopy, scanning; NAICS/Industry Codes: 327120 Clay Building Material and Refractories Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.intermet.2010.05.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52305158&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alexander, C. Scott AU - Reinhart, William D. AU - Thornhill, Tom F. AU - Chhabildas, Lalit C. T1 - Armor Options: A Comparison of the Dynamic Response of Materials in the Aluminum Oxide-Aluminum Nitride Family. JO - International Journal of Applied Ceramic Technology JF - International Journal of Applied Ceramic Technology Y1 - 2010/09// VL - 7 IS - 5 M3 - Article SP - 587 EP - 594 SN - 1546542X AB - For armor applications, ceramic materials are often useful due to their high dynamic strength. In some instances, in addition to high strength, the armor must also be transparent, which significantly limits the choices of materials. Materials in the aluminum oxide-aluminum nitride family (including Al2O3 and AlON) are both strong and transparent. Only the end compound AlN is opaque. In this paper, the dynamic response to shock loading is examined for these materials to better understand the material response. Despite the chemical similarities, significant differences exist in the shock response and will be discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Applied Ceramic Technology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARMOR KW - ALUMINUM oxide KW - ALUMINUM nitride KW - MATERIALS -- Dynamic testing KW - CERAMIC materials KW - COMPARATIVE studies KW - STRENGTH of materials N1 - Accession Number: 66324835; Alexander, C. Scott 1 Reinhart, William D. 1 Thornhill, Tom F. 1 Chhabildas, Lalit C. 2; Affiliation: 1: Sandia National Laboratories, Albuquerque, New Mexico 87185 2: Air Force Research Laboratory, Eglin, Florida 32542; Source Info: Sep2010, Vol. 7 Issue 5, p587; Subject Term: ARMOR; Subject Term: ALUMINUM oxide; Subject Term: ALUMINUM nitride; Subject Term: MATERIALS -- Dynamic testing; Subject Term: CERAMIC materials; Subject Term: COMPARATIVE studies; Subject Term: STRENGTH of materials; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1111/j.1744-7402.2010.02488.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=66324835&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Caton, M.J. AU - Jha, S.K. T1 - Small fatigue crack growth and failure mode transitions in a Ni-base superalloy at elevated temperature JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2010/09// VL - 32 IS - 9 M3 - Article SP - 1461 EP - 1472 SN - 01421123 AB - Abstract: A study of the long and small fatigue crack growth behavior in IN100 tested at 650°C both with and without dwell periods is summarized. A significant small crack effect is evident in this alloy, and it is observed that the influence of loading variables on small crack behavior is profoundly different from that on long cracks. While a 6s dwell has negligible effect on long crack growth rates, it results in more than an order of magnitude faster growth for small cracks (∼30μm to 1mm). Long crack growth is dominated by intergranular cracking both with and without 6s dwell. Small crack growth mode depends on numerous factors including crack size, dwell time, exposure to environment, and character of initiation site. Transitions in small crack growth modes and the operative crack growth mechanisms are discussed. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Fatigue KW - FRACTURE mechanics KW - PHASE transformations (Physics) KW - NICKEL alloys KW - HEAT resistant alloys KW - HIGH temperatures KW - GRANULAR materials KW - Dwell KW - Fatigue KW - Fractography KW - Intergranular KW - Small crack KW - Transgranular N1 - Accession Number: 50700216; Caton, M.J. 1; Email Address: Michael.Caton@wpafb.af.mil Jha, S.K. 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory (AFRL/RXLMN), Wright-Patterson AFB, OH 45433-7817, USA 2: Universal Technology Corporation, 1270 N. Fairfield Road, Dayton, OH 45432, USA; Source Info: Sep2010, Vol. 32 Issue 9, p1461; Subject Term: MATERIALS -- Fatigue; Subject Term: FRACTURE mechanics; Subject Term: PHASE transformations (Physics); Subject Term: NICKEL alloys; Subject Term: HEAT resistant alloys; Subject Term: HIGH temperatures; Subject Term: GRANULAR materials; Author-Supplied Keyword: Dwell; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Fractography; Author-Supplied Keyword: Intergranular; Author-Supplied Keyword: Small crack; Author-Supplied Keyword: Transgranular; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.ijfatigue.2010.01.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50700216&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hong Yan AU - Gaitonde, Datta T1 - Effect of Thermal Bump in Supersonic Flow Control. JO - International Journal of Flow Control JF - International Journal of Flow Control Y1 - 2010/09// VL - 2 IS - 3 M3 - Article SP - 183 EP - 196 SN - 17568250 AB - A three-dimensional numerical study is performed to explore the effect of a pulsed rectangular heating element (also denoted as thermal bump) in a Mach 1.5 laminar flat plate boundary layer. The thermal bump is modeled as a time-dependent step surface temperature rise. The thermal bump generates a series of counter-rotating streamwise vortices formed at the four edges of the element. When the bump is pulsed, vortex shedding is observed. These vortices interact with each other, generating a complicated vortical field, and grow in the spanwise direction with the downstream distance. Results show that the vertical perturbation velocity plays a key role in generating a lifting effect to sustain the horizontal disturbances. The streamwise velocity perturbation produces a low-speed region downstream of the centerline and a high-speed region on each side of the bump. The disturbance energy shows that the streamwise kinetic disturbance energy dominates over other components. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Flow Control is the property of Multi-Science Publishing Co Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - FLOW control (Data transmission systems) KW - VORTEX methods KW - PERTURBATION (Quantum dynamics) KW - NUCLEAR reactions KW - SUPERSONIC aerodynamics N1 - Accession Number: 58728331; Hong Yan 1; Email Address: hong.yan@wright.edu Gaitonde, Datta 2; Email Address: Datta.Gaitonde@wpafb.af.mil; Affiliation: 1: Department of Mechanical and Materials Engineering, Wright State University, 3640 Colonel Glenn Hwy, Dayton, OH 45435 2: Air Vehicles Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433; Source Info: Sep2010, Vol. 2 Issue 3, p183; Subject Term: AERODYNAMICS; Subject Term: FLOW control (Data transmission systems); Subject Term: VORTEX methods; Subject Term: PERTURBATION (Quantum dynamics); Subject Term: NUCLEAR reactions; Subject Term: SUPERSONIC aerodynamics; Number of Pages: 14p; Illustrations: 20 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58728331&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Oh, Sewon AU - Anwar, Diandra AU - Theodore, Alexandros AU - Lee, Jin-Hwa AU - Wu, Chang-Yu AU - Wander, Joe T1 - Development and evaluation of a novel bioaerosol amplification unit (BAU) for improved viral aerosol collection JO - Journal of Aerosol Science JF - Journal of Aerosol Science Y1 - 2010/09// VL - 41 IS - 9 M3 - Article SP - 889 EP - 894 SN - 00218502 AB - Abstract: A novel bioaerosol amplification unit (BAU) that increases the size of viral particles by condensational growth has been designed and evaluated for improved viral aerosol collection. In the BAU, water was used as the condensing vapor to preserve viability of virus, and supersaturation conditions for condensational growth of particles were achieved by either conductive cooling or mixing with hot, water-saturated air. MS2 bacteriophage (28nm) was used as the test agent, and changes in collection efficiency of an SKC Biosampler with and without the BAU were determined by assaying plaque-forming units (PFUs) in the collection medium. Results showed that the mixing-type BAU (mBAU) was a promising device for improved viral aerosol sampling. The number of viruses (PFU) collected in the Biosampler increased 2–3 fold after passing through the mBAU. However, PFU increases in the cooling-type BAU (cBAU) were insignificant. APS results likewise showed that the mBAU was better in growing particles than the cBAU. After growth, number concentrations of particles larger than 327nm in the cBAU and mBAU increased 1.3 and 15.0 fold, respectively. The relatively high molecular diffusivity of water vapor compared to the thermal diffusivity of air and the temperature gradient in the cBAU tube limited particle growth by causing condensation to occur predominantly at the colder wall. [Copyright &y& Elsevier] AB - Copyright of Journal of Aerosol Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROSOLS (Sprays) KW - VIRUSES KW - BACTERIOPHAGES KW - THERMAL diffusivity KW - CONDENSATION KW - GENE amplification KW - Amplification KW - Bioaerosol KW - Condensation KW - Sampling KW - Virus N1 - Accession Number: 52306832; Oh, Sewon 1 Anwar, Diandra 2 Theodore, Alexandros 2 Lee, Jin-Hwa 3 Wu, Chang-Yu 3; Email Address: cywu@ufl.edu Wander, Joe 4; Affiliation: 1: Department of Environmental Engineering, Sangmyung University, Korea 2: Department of Chemical Engineering, University of Florida, USA 3: Department of Environmental Engineering Sciences, University of Florida, USA 4: Air Force Research Laboratory, Tyndall Air Force Base, USA; Source Info: Sep2010, Vol. 41 Issue 9, p889; Subject Term: AEROSOLS (Sprays); Subject Term: VIRUSES; Subject Term: BACTERIOPHAGES; Subject Term: THERMAL diffusivity; Subject Term: CONDENSATION; Subject Term: GENE amplification; Author-Supplied Keyword: Amplification; Author-Supplied Keyword: Bioaerosol; Author-Supplied Keyword: Condensation; Author-Supplied Keyword: Sampling; Author-Supplied Keyword: Virus; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jaerosci.2010.06.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52306832&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bond, Vanessa L. AU - Canfield, Robert A. AU - Santos Matos, Maria da Luz Madruga AU - Suleman, Afzal AU - Blair, Maxwell T1 - Joined-Wing Wind-Tunnel Test for Longitudinal Control via Aftwing Twist. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2010/09//Sep/Oct2010 VL - 47 IS - 5 M3 - Article SP - 1481 EP - 1489 SN - 00218669 AB - Wind-tunnel tests were conducted to assess the use of aftwing twist for longitudinal control in a joined-wing aircraft. Forces and moments required for pitch control were measured experimentally, along with limited chordwise pressure measurements. Comparisons of aerodynamic panel model predictions with experimental data were used to calculate camber and center-of-pressure corrections. The lift-curve slope measured at four flow speeds compared favorably to linear predictions over the range of 20° angles of attack. The pitching moment coefficient was linear at the three lower flow speeds for untwisted and twist-down aft wings over a narrower range of about 10° angles of attack. The pressure exhibited shifts in the chordwise distribution at angles of attack coinciding with the change in the moment curve slope. The large spread in the twist-up aftwing configuration drag and pitching-moment coefficients indicated flow separation on the aft wing, even at small angles of attack, deterring the twist effectiveness. Independent forward and aftwing measurements and more extensive use of pressure sensors are recommended in future experiments to confirm the apparent separation and interference effects that must be avoided if aftwing twist is to be used for pitch control on a joined wing. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERFERENCE (Aerodynamics) KW - AERODYNAMICS KW - AIRPLANE wings KW - AIRFRAMES KW - AIRPLANES -- Pressurization N1 - Accession Number: 55793237; Bond, Vanessa L. 1 Canfield, Robert A. 2 Santos Matos, Maria da Luz Madruga 3 Suleman, Afzal 4 Blair, Maxwell 5; Affiliation: 1: Arnold Engineering Development Center, Arnold Air Force Base, Tennessee 37389 2: Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061 3: Academia da Forçe Aérea, 2710 Sintra, Portugal 4: University of Victoria, Victoria, British Columbia V8W 3P6, Canada 5: U.S. Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433; Source Info: Sep/Oct2010, Vol. 47 Issue 5, p1481; Subject Term: INTERFERENCE (Aerodynamics); Subject Term: AERODYNAMICS; Subject Term: AIRPLANE wings; Subject Term: AIRFRAMES; Subject Term: AIRPLANES -- Pressurization; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 9p; Illustrations: 4 Black and White Photographs, 5 Diagrams, 4 Charts, 12 Graphs; Document Type: Article L3 - 10.2514/1.41140 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55793237&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ghommem, M. AU - Hajj, M. R. AU - Pettit, C. L. AU - Beran, P. S. T1 - Stochastic Modeling of Incident Gust Effects on Aerodynamic Lift. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2010/09//Sep/Oct2010 VL - 47 IS - 5 M3 - Article SP - 1720 EP - 1727 SN - 00218669 AB - The intrusive formulation of polynomial chaos expansion is implemented to determine uncertainty in aerodynamic loads on a rigid airfoil due to imprecise parameters that characterize an incoming gust. The results yield the sensitivity of the lift coefficient to variations in intensities and integral length scales of the gust fluctuations. The results show that lift coefficient fluctuations about the mean of each time step are affected primarily by the intensity of the fluctuations of the vertical velocity component, which should be expected. Next in order of importance is the integral length scale of the vertical velocity component. This implementation of the intrusive polynomial chaos expansion provides guidance for future efforts to quantify uncertain gust loads on micro air vehicles with higher fidelity models. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GUST loads KW - AERODYNAMIC load KW - STOCHASTIC models KW - CHAOS theory KW - ATMOSPHERIC turbulence N1 - Accession Number: 55793258; Ghommem, M. 1 Hajj, M. R. 1 Pettit, C. L. 2 Beran, P. S. 3; Affiliation: 1: Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061 2: United States Naval Academy, Annapolis, Maryland 21402 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542; Source Info: Sep/Oct2010, Vol. 47 Issue 5, p1720; Subject Term: GUST loads; Subject Term: AERODYNAMIC load; Subject Term: STOCHASTIC models; Subject Term: CHAOS theory; Subject Term: ATMOSPHERIC turbulence; Number of Pages: 8p; Illustrations: 1 Diagram, 3 Charts, 4 Graphs; Document Type: Article L3 - 10.2514/1.C000257 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55793258&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Poggie, Jonathan AU - Tilmann, Carl P. AU - Flick, Peter M. AU - Silkey, Joseph S. AU - Osborne, Bradley A. AU - Ervin, Gregory AU - Maric, Dragan AU - Mangalam, Siva AU - Mangalam, Arun T1 - Closed-Loop Stall Control System. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2010/09//Sep/Oct2010 VL - 47 IS - 5 M3 - Article SP - 1747 EP - 1755 SN - 00218669 AB - A closed-loop, stall sense and control system was demonstrated on a morphing airfoil. The FlexSys, Inc. Mission Adaptive Compliant Wing was modified to accept a Boeing Co. dielectric barrier discharge actuator panel in a location immediately upstream of the trailing-edge morphing flap, and hot-film sensors were installed on the model surface. A signal analysis algorithm, developed by Tao Systems, Inc., was applied to the hot-film signals to detect separation and trigger activation of the dielectric barrier discharge actuators. The system was successfully demonstrated in the U.S. Air Force Research Laboratory Phillip P. Antonatos Subsonic Aerodynamics Research Laboratory wind-tunnel facility, and an improvement in lift of about 10% was observed at Mach 0.05 (chord Reynolds number 9 x 105) under closed-loop control and a turbulent boundary-layer state. Actuator effectiveness was demonstrated up to Mach 0.1, but must be extended to Mach 0.2-0.3 to enable a practical stall control system for takeoff and approach of large aircraft. It may be possible to obtain that level of performance by optimizing the actuator locations and input waveforms. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROFOILS KW - AIRPLANE control systems KW - ACTUATORS KW - AIRPLANES -- Performance KW - AERODYNAMIC load N1 - Accession Number: 55793261; Poggie, Jonathan 1 Tilmann, Carl P. 1 Flick, Peter M. 1 Silkey, Joseph S. 2 Osborne, Bradley A. 2 Ervin, Gregory 3 Maric, Dragan 3 Mangalam, Siva 4 Mangalam, Arun 4; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Boeing Integrated Defense Systems, St. Louis, Missouri 63166 3: FlexSys, Ann Arbor, Michigan 48105 4: Tao of Systems Integration, Hampton, Virginia 23666; Source Info: Sep/Oct2010, Vol. 47 Issue 5, p1747; Subject Term: AEROFOILS; Subject Term: AIRPLANE control systems; Subject Term: ACTUATORS; Subject Term: AIRPLANES -- Performance; Subject Term: AERODYNAMIC load; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 9p; Illustrations: 2 Color Photographs, 2 Diagrams, 1 Chart, 6 Graphs; Document Type: Article L3 - 10.2514/1.C000262 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55793261&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vu Thien Binh AU - Mouton, R. AU - Adessi, Ch. AU - Semet, V. AU - Cahay, M. AU - Fairchild, S. T1 - Nanopatchwork cathodes: Patch-fields and field emission of nanosize parallel e-beams. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/09// VL - 108 IS - 4 M3 - Article SP - 044311 EP - 43116 PB - American Institute of Physics SN - 00218979 AB - A numerical calculation of the patch-field distribution across nanopatchwork surfaces has been developed. Results show that the low work-function nanosize zones are intrinsically protected by an electrostatic screen, which is induced by the surrounding area having a higher work function. In presence of an applied field, during field emission, a preferential opening of the surface barrier above the nanopatches induces a field emission array of parallel e-beams whose geometrical distribution is defined by the positions of the nanopatches. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUMERICAL calculations KW - NANOSTRUCTURES KW - SURFACES (Technology) KW - ELECTROSTATICS KW - DISTRIBUTION (Probability theory) N1 - Accession Number: 53421915; Vu Thien Binh 1; Email Address: binh.vu-thien@univ-lyon1.fr Mouton, R. 1 Adessi, Ch. 1 Semet, V. 1 Cahay, M. 2 Fairchild, S. 3; Affiliation: 1: Equipe Emission Electronique, LPMCN-CNRS, University of Lyon 1, Villeurbanne 69622, France 2: Department of ECECS, University of Cincinnati, Cincinnati, Ohio 45221, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA; Source Info: Sep2010, Vol. 108 Issue 4, p044311; Subject Term: NUMERICAL calculations; Subject Term: NANOSTRUCTURES; Subject Term: SURFACES (Technology); Subject Term: ELECTROSTATICS; Subject Term: DISTRIBUTION (Probability theory); Number of Pages: 6p; Illustrations: 6 Black and White Photographs, 6 Graphs; Document Type: Article L3 - 10.1063/1.3475343 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53421915&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Buguo AU - Suscavage, Michael AU - Bliss, David F. AU - Jimenez, J. T1 - Inversion domains and parallel growth in ammonothermally grown GaN crystals JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2010/09// VL - 312 IS - 18 M3 - Article SP - 2507 EP - 2513 SN - 00220248 AB - Abstract: Macro-defects such as twins, inversion domains, crevices, and columnar growth occasionally appear in ammonothermally grown GaN crystals. Twinning mechanisms and parallel growth are proposed to explain the formation of these defects. As a polar crystal with wurtzite structure, GaN can have several different kinds of twins depending on the polarity arrangement of each individual twin. Inversion domains are formed in one of the twinning mechanisms. Parallel growth is used to explain the formation of pits on the nitrogen face and the columnar growth on the gallium face. Etching in hot H3PO4 is used to reveal the polarities and defects of GaN crystals when they are indistinguishable. Optical microscopy, scanning electron microscope, and cathodoluminescence are also employed to study these defects. In addition, seed quality, avoidance of macro-defect formation, and impurity effects are also discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - METAL crystals -- Growth KW - CHEMICAL processes KW - CRYSTAL defects KW - TWINNING (Crystallography) KW - MICROSCOPY KW - LUMINESCENCE KW - A1. Crystal growth KW - A1. The ammonothermal technique KW - A2. GaN KW - B1. Crystallographic polarity KW - B1. Inversion domain KW - B1. Twins N1 - Accession Number: 52823611; Wang, Buguo 1; Email Address: buguo@solidstatescientific.com Suscavage, Michael 2 Bliss, David F. 2 Jimenez, J. 3; Affiliation: 1: Solid State Scientific Corporation, 27-2 Wright Road, Hollis, NH 03049, USA 2: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA 3: Dpto. Física Materia Condensada – Universidad de Valladolid, Valladolid 47011, Spain; Source Info: Sep2010, Vol. 312 Issue 18, p2507; Subject Term: GALLIUM nitride; Subject Term: METAL crystals -- Growth; Subject Term: CHEMICAL processes; Subject Term: CRYSTAL defects; Subject Term: TWINNING (Crystallography); Subject Term: MICROSCOPY; Subject Term: LUMINESCENCE; Author-Supplied Keyword: A1. Crystal growth; Author-Supplied Keyword: A1. The ammonothermal technique; Author-Supplied Keyword: A2. GaN; Author-Supplied Keyword: B1. Crystallographic polarity; Author-Supplied Keyword: B1. Inversion domain; Author-Supplied Keyword: B1. Twins; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jcrysgro.2010.04.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52823611&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Zhu, Yuntian T. AU - Mathaudhu, Suveen N. AU - Göken, Mathias AU - Langdon, Terence G. AU - Lowe, Terry C. AU - Semiatin, S. Lee AU - Tsuji, Nobuhiro AU - Zhao, Yong Hao T1 - Preface to the Special Issue on Ultrafine Grained Materials. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2010/09// VL - 45 IS - 17 M3 - Editorial SP - 4543 EP - 4544 PB - Springer Science & Business Media B.V. SN - 00222461 AB - A preface for the third special issue of "Journal of Materials Science" on ultrafine-grained (UFG) materials is presented. KW - PREFACES & forewords KW - NANOSTRUCTURED materials N1 - Accession Number: 52021871; Zhu, Yuntian T. 1; Email Address: ytzhu@ncsu.edu Mathaudhu, Suveen N. 2; Email Address: suveen.mathaudhu@us.army.mil Göken, Mathias 3; Email Address: goeken@ww.uni-erlangen.de Langdon, Terence G. 4; Email Address: langdon@usc.edu Lowe, Terry C. 5; Email Address: terry@mhtx.com Semiatin, S. Lee 6; Email Address: Lee.Semiatin@wpafb.af.mil Tsuji, Nobuhiro 7; Email Address: nobuhiro.tsuji@ky5.ecs.kyoto-u.ac.jp Zhao, Yong Hao 8; Email Address: yhzhao@ucdavis.edu; Affiliation: 1: Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695-7919, USA 2: Materials and Manufacturing Sciences Division, U.S. Army Research Laboratory, Aberdeen Proving Ground, MD 21005-5069, USA 3: Department of Materials Science and Engineering, Institute I University Erlangen--Nürnberg, Martensstrasse 5, 91058 Erlangen, Germany 4: Departments of Aerospace & Mechanical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089-1453, USA 5: Manhattan Scientifics Incorporated, The Chysler Building 32nd Floor, 405 Lexington Avenue, New York, NY 10174, USA 6: Air Force Research Laboratory, Materials & Manufacturing Directorate, WPAFB, OH 45433, USA 7: Department of Materials Science and Engineering, Kyoto University, Kyoto 606-8501, Japan 8: Department of Chemical Engineering and Materials Science, University of California, Davis, Davis, CA 95616-5294, USA; Source Info: Sep2010, Vol. 45 Issue 17, p4543; Subject Term: PREFACES & forewords; Subject Term: NANOSTRUCTURED materials; Number of Pages: 2p; Document Type: Editorial L3 - 10.1007/s10853-010-4709-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52021871&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abu-Nabah, Bassam AU - Hassan, Waled AU - Ryan, Daniel AU - Blodgett, Mark AU - Nagy, Peter T1 - The Effect of Hardness on Eddy Current Residual Stress Profiling in Shot-Peened Nickel Alloys. JO - Journal of Nondestructive Evaluation JF - Journal of Nondestructive Evaluation Y1 - 2010/09// VL - 29 IS - 3 M3 - Article SP - 143 EP - 153 SN - 01959298 AB - Recent research results indicate that eddy current conductivity measurements can be exploited for nondestructive evaluation of subsurface residual stresses in surface-treated nickel-base superalloy components. According to this approach, first the depth-dependent electric conductivity profile is calculated from the measured frequency-dependent apparent eddy current conductivity spectrum. Then, the residual stress depth profile is calculated from the conductivity profile based on the piezoresistivity coefficient of the material, which is determined separately from calibration measurements using known external applied stresses. This paper presents new results that indicate that in some popular nickel-base superalloys the relationship between the electric conductivity profile and the sought residual stress profile is more tenuous than previously thought. It is shown that in delta-processed IN718 the relationship is very sensitive to the state of precipitation hardening and, if left uncorrected, could render the eddy current technique unsuitable for residual stress profiling in components of 36 HRC or harder, i.e., in most critical engine applications. The presented experimental results show that the observed dramatic change in the eddy current response of hardened IN718 to surface treatment is caused by very fine nanometer-scale features of the microstructure, such as γ′ and γ″ precipitates, rather than micrometer-scale features, such as changing grain size or δ phase and carbide precipitates. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nondestructive Evaluation is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - RESIDUAL stresses KW - NICKEL alloys KW - ELECTRIC conductivity KW - NANOELECTROMECHANICAL systems KW - CARBIDES KW - CALIBRATION KW - MICROSTRUCTURE KW - Conductivity spectroscopy KW - Eddy current KW - Residual stress KW - Surface-treatment N1 - Accession Number: 52814736; Abu-Nabah, Bassam 1 Hassan, Waled 2 Ryan, Daniel 3 Blodgett, Mark 4 Nagy, Peter 5; Email Address: peter.nagy@uc.edu; Affiliation: 1: General Electric Aviation, Cincinnati 45215 USA 2: Rolls-Royce Corporation, Indianapolis 46241 USA 3: Honeywell Aerospace, Phoenix 85034 USA 4: Air Force Research Laboratory, WPAFB, Dayton 45433 USA 5: Department of Aerospace Engineering, University of Cincinnati, Cincinnati 45221 USA; Source Info: Sep2010, Vol. 29 Issue 3, p143; Subject Term: EDDY currents (Electric); Subject Term: RESIDUAL stresses; Subject Term: NICKEL alloys; Subject Term: ELECTRIC conductivity; Subject Term: NANOELECTROMECHANICAL systems; Subject Term: CARBIDES; Subject Term: CALIBRATION; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: Conductivity spectroscopy; Author-Supplied Keyword: Eddy current; Author-Supplied Keyword: Residual stress; Author-Supplied Keyword: Surface-treatment; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 11p; Document Type: Article L3 - 10.1007/s10921-010-0072-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52814736&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bisek, Nicholas J. AU - Boyd, Iain D. AU - Poggie, Jonathan T1 - Numerical Study of Magnetoaerodynamic Flow Around a Hemisphere. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2010/09//Sep/Oct2010 VL - 47 IS - 5 M3 - Article SP - 816 EP - 827 SN - 00224650 AB - Newly developed computational tools are used to compute hypersonic flow around a hemisphere cylinder that uses a magnet located within the body as a means of heat flux mitigation. These tools include an improved electrical conductivity model and a parallelized three-dimensional magnetohydrodynamic module that is loosely coupled to a three-dimensional fluid code. Several electrical conductivity models are explored for a range of magnetic field strengths. Results show the shock standoff distance increases when the magnetic field is applied, but the distance is highly dependent on the conductivity model selected. The increase in shock standoff distance reduces the gradients in the shock layer, thereby reducing the peak heat flux to the body. However, the total heat flux slightly increases due to additional heating to the aft section of the geometry. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT flux KW - ELECTRIC conductivity KW - MAGNETOHYDRODYNAMICS KW - MAGNETIC fields KW - GEOMETRY N1 - Accession Number: 54736402; Bisek, Nicholas J. 1 Boyd, Iain D. 1 Poggie, Jonathan 2; Affiliation: 1: University of Michigan, Ann Arbor, Michigan 48109 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512; Source Info: Sep/Oct2010, Vol. 47 Issue 5, p816; Subject Term: HEAT flux; Subject Term: ELECTRIC conductivity; Subject Term: MAGNETOHYDRODYNAMICS; Subject Term: MAGNETIC fields; Subject Term: GEOMETRY; Number of Pages: 12p; Illustrations: 12 Diagrams, 4 Charts, 6 Graphs; Document Type: Article L3 - 10.2514/1.49278 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54736402&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - GROTELUESCHEN, MARK E. T1 - Uncle Sam Wants You: World War I and the Making of the Modern American Citizen. JO - Journal of World History JF - Journal of World History Y1 - 2010/09// VL - 21 IS - 3 M3 - Book Review SP - 539 EP - 541 PB - University of Hawaii Press SN - 10456007 AB - A review of the book "Uncle Sam Wants You: World War I & the Making of the Modern American Citizen," by Christopher Capozzola is presented. KW - HISTORY KW - WORLD War, 1914-1918 KW - NONFICTION KW - UNITED States KW - CAPOZZOLA, Christopher KW - UNCLE Sam Wants You: World War I & the Making of the Modern American Citizen (Book) N1 - Accession Number: 54303750; GROTELUESCHEN, MARK E. 1; Affiliation: 1: United States Air Force Academy.; Source Info: Sep2010, Vol. 21 Issue 3, p539; Subject Term: HISTORY; Subject Term: WORLD War, 1914-1918; Subject Term: NONFICTION; Subject Term: UNITED States; Reviews & Products: UNCLE Sam Wants You: World War I & the Making of the Modern American Citizen (Book); People: CAPOZZOLA, Christopher; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54303750&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fleigel, Jeffrey D. AU - Tunder, George S. AU - Villalobos, Joe J. T1 - A Maxillary Obturator Prosthesis for an Active Duty Air Force Flyer: A Case Report. JO - Military Medicine JF - Military Medicine Y1 - 2010/09// VL - 175 IS - 9 M3 - Article SP - 697 EP - 700 PB - AMSUS SN - 00264075 AB - Objectives: To fabricate a maxillary obturator prosthesis for an active duty pilot allowing him to return to active flying status. Methods: A 24-year-old male active duty U.S. Air Force pilot presented with a history of right posterior maxillectomy due to a keratocyst odontogenic tumor. The patient had been wearing an interim obturator prosthesis for 4 months and was removed from active duty flight status. A comprehensive oral evaluation was completed and a definitive obturator prosthesis was fabricated using a cast metal framework. Extraoral 3D stereophotogrammetry and a facial moulage were accomplished. The patient underwent evaluation for return to active flying status. Results: The patient returned to active duty flight status after passing all of the required tests. Conclusion: Obturator prostheses may be a suitable treatment option allowing a patient to conduct all of the required functions of an active flyer. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROSTHESIS KW - AIR pilots -- Health KW - PHOTOGRAMMETRY KW - THERAPEUTICS KW - UNITED States. Air Force -- Officials & employees N1 - Accession Number: 53850711; Fleigel, Jeffrey D. 1 Tunder, George S. Villalobos, Joe J.; Affiliation: 1: United States Air Force Academy, 2355-B Faculty Drive, USAFA, CO 80840; Source Info: Sep2010, Vol. 175 Issue 9, p697; Subject Term: PROSTHESIS; Subject Term: AIR pilots -- Health; Subject Term: PHOTOGRAMMETRY; Subject Term: THERAPEUTICS; Subject Term: UNITED States. Air Force -- Officials & employees; NAICS/Industry Codes: 446199 All Other Health and Personal Care Stores; NAICS/Industry Codes: 928110 National Security; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53850711&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Van Zwoll, Lisa R.. T1 - Poétique des lieux: Enquête sur les mémoires féminins de l'aristocratie française (1789-1848). JO - Nineteenth Century French Studies JF - Nineteenth Century French Studies Y1 - 2010/09// VL - 39 IS - 1/2 M3 - Book Review SP - 177 EP - 178 SN - 01467891 AB - A review of the book "Poétique des lieux: Enquête sur les mémoires féminins de l'aristocratie française 1789-1848," by Claudine Giacchetti is presented. KW - AUTOBIOGRAPHY -- Women authors KW - NONFICTION KW - GIACCHETTI, Claudine KW - POETIQUE des lieux: Enquete sur les memoires feminins de l'aristocratie francaise 1789-1848 (Book) N1 - Accession Number: 55578904; Van Zwoll, Lisa R.. 1; Affiliation: 1: United States Air Force Academy.; Source Info: Sep2010, Vol. 39 Issue 1/2, p177; Subject Term: AUTOBIOGRAPHY -- Women authors; Subject Term: NONFICTION; Reviews & Products: POETIQUE des lieux: Enquete sur les memoires feminins de l'aristocratie francaise 1789-1848 (Book); People: GIACCHETTI, Claudine; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55578904&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Triplicane A. Parthasarathy AU - Randall S. Hay AU - Geoff Fair AU - Frank Kenneth Hopkins T1 - Predicted performance limits of yttrium aluminum garnet fiber lasers. JO - Optical Engineering JF - Optical Engineering Y1 - 2010/09// VL - 49 IS - 9 M3 - Article SP - 094302 EP - 094302-8 SN - 00913286 AB - The effect of various parameters that limit the performance of fiber lasers are calculated for yttrium aluminum garnet (YAG) as the fiber core. The optimum core diameter, the optimum fiber length, and the corresponding output power capability are determined for a variety of optical and structural parameters of YAG, based on available data in the literature to date. It is shown that a conservative limit for YAG fiber laser is 6 kWper fiber in multimode operation, compared to 1.8 kWfor a silica-based fiber laser. Furthermore, it is shown that if stimulated brillouin scattering gain, a key limiting parameter, is <10−12 mWin YAG, as a recent publication suggests, the maximum output power is 30 kWper fiber without a significant increase in fiber core diameter. Similar gains are predicted for single-mode operation, although with much lower output power limits. A parametric study shows the relative merits of improving on various optical parameters. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - YTTRIUM KW - ALUMINUM KW - GARNET KW - BRILLOUIN scattering KW - OPTOELECTRONIC devices KW - OPTICS KW - FIBER optics N1 - Accession Number: 54298910; Triplicane A. Parthasarathy 1 Randall S. Hay 1 Geoff Fair 1 Frank Kenneth Hopkins 1; Affiliation: 1: Air Force Research Laboratory, AFRL/RXLN, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Sep2010, Vol. 49 Issue 9, p094302; Subject Term: LASERS; Subject Term: YTTRIUM; Subject Term: ALUMINUM; Subject Term: GARNET; Subject Term: BRILLOUIN scattering; Subject Term: OPTOELECTRONIC devices; Subject Term: OPTICS; Subject Term: FIBER optics; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54298910&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tuncer, Enis AU - Vaia, Richard A. AU - Arlen, Michael T1 - Percolation in a nanotube-polymer system and its lumped-circuit modeling. JO - Philosophical Magazine Letters JF - Philosophical Magazine Letters Y1 - 2010/09// VL - 90 IS - 9 M3 - Article SP - 663 EP - 675 PB - Taylor & Francis Ltd SN - 09500839 AB - Electrical properties of composites composed of polyurethane polymer and multi-walled nanotubes are reported. Samples with different nanotube volume fractions are prepared, and an impedance spectroscopy technique in the frequency range from 10 mHz to 10 MHz is used to characterize the properties of the samples. It is observed that the resistivity of the mixture can be varied widely, from ∼10 MΩm to ∼1 Ωm, just by slightly altering the volume fraction of nanotubes. A lumped-circuit model illustrated that the micro-scale morphology between nanotube-clusters influences the resistive relaxation in the composite system. The investigations show that the presented binary mixture has a potential to be utilized in conductive electrical components (flexible electrodes), electromagnetic shielding, and electrostatic and field grading materials for electronic and high voltage insulation technologies. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Magazine Letters is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYURETHANES KW - POLYMERS KW - NANOTUBES KW - IMPEDANCE spectroscopy KW - ELECTRODES KW - electromagnetic properties KW - impedance networks KW - nanocomposite KW - nanotubes KW - percolation N1 - Accession Number: 51981854; Tuncer, Enis 1; Email Address: enis.tuncer@physics.org Vaia, Richard A. 2 Arlen, Michael 2; Affiliation: 1: Applied Superconductivity Group, Fusion Energy Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6122, USA. 2: Air Force Research Laboratory, Wright Patterson AFB, OH 45433-7750, USA.; Source Info: Sep2010, Vol. 90 Issue 9, p663; Subject Term: POLYURETHANES; Subject Term: POLYMERS; Subject Term: NANOTUBES; Subject Term: IMPEDANCE spectroscopy; Subject Term: ELECTRODES; Author-Supplied Keyword: electromagnetic properties; Author-Supplied Keyword: impedance networks; Author-Supplied Keyword: nanocomposite; Author-Supplied Keyword: nanotubes; Author-Supplied Keyword: percolation; Number of Pages: 13p; Illustrations: 2 Diagrams, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1080/09500839.2010.493532 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51981854&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blakeman, Thomas C. AU - Toth, Peter AU - Rodriquez, Dario AU - Branson, Richard D. T1 - Mechanical ventilators in the hot zone: Effects of a CBRN filter on patient protection and battery life JO - Resuscitation JF - Resuscitation Y1 - 2010/09// VL - 81 IS - 9 M3 - Article SP - 1148 EP - 1151 SN - 03009572 AB - Abstract: Objective: In a contaminated environment, respiratory protection for ventilator dependent patients can be achieved by attaching a chemical, biological, radiological, or nuclear (CBRN) filter to the air intake port of a portable ventilator. We evaluated the effect of the filter on battery performance of four portable ventilators in a laboratory setting. Methods: Each ventilator was attached to a test lung. Ventilator settings were: assist control (AC) mode, respiratory rate 35bpm, tidal volume 450ml, positive end-expiratory pressure (PEEP) 10cm H2O, inspiratory time 0.8s, and FIO2 0.21. Ventilators were operated until the battery was fully discharged. We also evaluated the ventilators’ ability to deliver all the gas through the CBRN filter and analyzed the pressures required to breathe through the anti-asphyxiation valve of a failed device. Results: The range of battery life varied widely across different ventilator models (99.8–562.6min). There was no significant difference in battery life (p <0.01) when operating with or without the CBRN filter attached. Only the Impact 731 routed all inspired gases through the CBRN filter. The pressure required to breathe though the failed device was −4cm H2O to −9cm H2O. Conclusions: Duration of operation from the internal battery was not altered by attachment of the CBRN filter. The use of a CBRN filter is necessary for protection of ventilator dependent patients when environmental contamination is present, although conditions exist where all gas does not pass through the filter with some ventilators under normal operating conditions. [Copyright &y& Elsevier] AB - Copyright of Resuscitation is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESPIRATORS (Medical equipment) KW - MEDICAL equipment KW - ELECTRIC batteries KW - ELECTRONIC apparatus & appliances -- Power supply KW - HOSPITAL patients KW - ARTIFICIAL respiration -- Equipment & supplies KW - Battery life KW - CBRN filter KW - Hazardous environment KW - Portable ventilator KW - Triggering N1 - Accession Number: 53307817; Blakeman, Thomas C. 1; Email Address: thomas.blakeman@uc.edu Toth, Peter 2 Rodriquez, Dario 3 Branson, Richard D. 1; Affiliation: 1: University of Cincinnati Department of Surgery, Division of Trauma/Critical Care, Cincinnati, OH, United States 2: Medical Student, University of Cincinnati, Cincinnati, OH, United States 3: Center for Sustainment of Trauma and Readiness Skills (CSTARS), United States Air Force, Cincinnati, OH, United States; Source Info: Sep2010, Vol. 81 Issue 9, p1148; Subject Term: RESPIRATORS (Medical equipment); Subject Term: MEDICAL equipment; Subject Term: ELECTRIC batteries; Subject Term: ELECTRONIC apparatus & appliances -- Power supply; Subject Term: HOSPITAL patients; Subject Term: ARTIFICIAL respiration -- Equipment & supplies; Author-Supplied Keyword: Battery life; Author-Supplied Keyword: CBRN filter; Author-Supplied Keyword: Hazardous environment; Author-Supplied Keyword: Portable ventilator; Author-Supplied Keyword: Triggering; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 418990 All other merchant wholesalers; NAICS/Industry Codes: 335910 Battery manufacturing; NAICS/Industry Codes: 423450 Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers; NAICS/Industry Codes: 339112 Surgical and Medical Instrument Manufacturing; NAICS/Industry Codes: 339110 Medical equipment and supplies manufacturing; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 417930 Professional machinery, equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334510 Electromedical and Electrotherapeutic Apparatus Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.resuscitation.2010.05.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53307817&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Balasubramanyam, A. AU - Sailaja, N. AU - Mahboob, M. AU - Rahman, M.F. AU - Hussain, Saber M. AU - Grover, Paramjit T1 - In vitro mutagenicity assessment of aluminium oxide nanomaterials using the Salmonella/microsome assay JO - Toxicology in Vitro JF - Toxicology in Vitro Y1 - 2010/09// VL - 24 IS - 6 M3 - Article SP - 1871 EP - 1876 SN - 08872333 AB - Abstract: The aim of the current study was to evaluate the potential mutagenicity of aluminium oxide nanomaterials (NMs) (Al2O3-30nm and Al2O3-40nm). Characterization of the NMs was done before the initiation of the study. The mutagenicity of the NMs was studied by the Ames test with Salmonella typhimurium TA100, TA1535, TA98, TA97a and TA102 strains, in the presence and absence of the S9 mixture. Based on a preliminary cytotoxicity study conducted on the strains, different concentrations of Al2O3-30nm, Al2O3-40nm and Al2O3-bulk were selected. At all the concentrations tested, Al2O3-30nm and Al2O3-40nm did not significantly increase the number of revertant colonies compared to the Al2O3-bulk and control with or without S9 mixture. Our findings suggest that Al2O3 NMs were devoid of any size and concentration dependent mutagenicity compared to the Al2O3-bulk and control. [ABSTRACT FROM AUTHOR] AB - Copyright of Toxicology in Vitro is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM oxide KW - NANOSTRUCTURED materials KW - SALMONELLA KW - TRANSMISSION electron microscopy KW - MUTAGENICITY testing KW - SALMONELLA typhimurium KW - LIGHT -- Scattering KW - TOXICITY testing -- In vitro KW - TOXICOLOGY KW - Aluminium oxide KW - aluminium oxide ( Al2O3 ) KW - Ames test KW - dynamic light scattering ( DLS ) KW - laser Doppler velocimetry ( LDV ) KW - Mutagenicity KW - Nanomaterials KW - Salmonella KW - transmission electron microscopy ( TEM ) N1 - Accession Number: 53334362; Balasubramanyam, A. 1 Sailaja, N. 1 Mahboob, M. 1 Rahman, M.F. 1 Hussain, Saber M. 2 Grover, Paramjit 1; Email Address: grover@iict.res.in; Affiliation: 1: Toxicology Unit, Biology Division, Indian Institute of Chemical Technology, Hyderabad 500 607, Andhra Pradesh, India 2: Applied Biotechnology, Air Force Research Laboratory/HEPB, Wright-Patterson, AFB, OH 45431, USA; Source Info: Sep2010, Vol. 24 Issue 6, p1871; Subject Term: ALUMINUM oxide; Subject Term: NANOSTRUCTURED materials; Subject Term: SALMONELLA; Subject Term: TRANSMISSION electron microscopy; Subject Term: MUTAGENICITY testing; Subject Term: SALMONELLA typhimurium; Subject Term: LIGHT -- Scattering; Subject Term: TOXICITY testing -- In vitro; Subject Term: TOXICOLOGY; Author-Supplied Keyword: Aluminium oxide; Author-Supplied Keyword: aluminium oxide ( Al2O3 ); Author-Supplied Keyword: Ames test; Author-Supplied Keyword: dynamic light scattering ( DLS ); Author-Supplied Keyword: laser Doppler velocimetry ( LDV ); Author-Supplied Keyword: Mutagenicity; Author-Supplied Keyword: Nanomaterials; Author-Supplied Keyword: Salmonella; Author-Supplied Keyword: transmission electron microscopy ( TEM ); NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 325413 In-Vitro Diagnostic Substance Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.tiv.2010.07.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53334362&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roslyak, O. AU - Gumbs, Godfrey AU - Huang, Danhong T1 - Tunable band structure effects on ballistic transport in graphene nanoribbons JO - Physics Letters A JF - Physics Letters A Y1 - 2010/08/30/ VL - 374 IS - 39 M3 - Article SP - 4061 EP - 4064 SN - 03759601 AB - Abstract: Graphene nanoribbons (GNR) in mutually perpendicular electric and magnetic fields are shown to exhibit dramatic changes in their band structure and electron transport properties. A strong electric field across the ribbon induces multiple chiral Dirac points, closing the semiconducting gap in armchair GNRs. A perpendicular magnetic field induces partially formed Landau levels as well as dispersive surface-bound states. Each of the applied fields on its own preserves the even symmetry of the subband dispersion. When applied together, they reverse the dispersion parity to be odd and gives and mix the electron and hole subbands within the energy range corresponding to the change in potential across the ribbon. This leads to oscillations of the ballistic conductance within this energy range. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics Letters A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPHENE KW - NANOSTRUCTURES KW - ELECTRON transport KW - ELECTRIC fields KW - MAGNETIC fields KW - ENERGY bands KW - ENERGY gaps (Physics) KW - OSCILLATIONS KW - Ballistic transport KW - Graphene KW - Nanoribbons N1 - Accession Number: 53333684; Roslyak, O. 1; Email Address: avroslyak@gmail.com Gumbs, Godfrey 1,2 Huang, Danhong 3; Affiliation: 1: Department of Physics and Astronomy, Hunter College of City University of New York, 695 Park Avenue, New York, NY 10065-50085, USA 2: Donostia International Physics Center (DIPC), P. de Manuel Lardizabal, 4, 20018 San Sebastián, Basque Country, Spain 3: Air Force Research Laboratory (AFRL/RVSS), Kirtland Air Force Base, NM 87117, USA; Source Info: Aug2010, Vol. 374 Issue 39, p4061; Subject Term: GRAPHENE; Subject Term: NANOSTRUCTURES; Subject Term: ELECTRON transport; Subject Term: ELECTRIC fields; Subject Term: MAGNETIC fields; Subject Term: ENERGY bands; Subject Term: ENERGY gaps (Physics); Subject Term: OSCILLATIONS; Author-Supplied Keyword: Ballistic transport; Author-Supplied Keyword: Graphene; Author-Supplied Keyword: Nanoribbons; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.physleta.2010.08.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53333684&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ning Chai AU - Lucht, Robert P. AU - Kulatilaka, Waruna D. AU - Roy, Sukesh AU - Gord, James R. T1 - Electronic-resonance-enhanced coherent anti-Stokes Raman scattering of nitric oxide: Saturation and Stark effects. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2010/08/28/ VL - 133 IS - 8 M3 - Article SP - 084310 PB - American Institute of Physics SN - 00219606 AB - A theoretical analysis of electronic-resonance-enhanced (ERE) coherent anti-Stokes Raman scattering (CARS) of NO is described. The time-dependent density-matrix equations for the nonlinear ERE-CARS process are derived and manipulated into a form suitable for direct numerical integration. In the ERE-CARS configuration considered in this paper, the pump and Stokes beams are far from electronic-resonance. The visible 532 and 591 nm laser beams are used to excite Q-branch Raman resonances in the vibrational bands of the X 2Π electronic state of NO. An ultraviolet probe beam at 236 nm is used to excite P-, Q-, or R-branch transitions in the (v′=0, v″=1) band of the A 2Σ+-X 2Π electronic system of NO molecule. Experimental spectra are obtained either by scanning the ultraviolet probe beam while keeping the Stokes frequency fixed (probe scans) or by scanning the Stokes frequency while keeping the probe frequency fixed (Stokes scans). The calculated NO ERE-CARS spectra are compared with experimental spectra, and good agreement is observed between theory and experiment in terms of spectral peak locations and relative intensities. The effects of saturation of the two-photon Raman-resonant Q-branch transitions, the saturation of a one-photon electronic-resonant P-, Q-, or R-branch transitions in the A 2Σ+-X 2Π electronic system, and the coupling of these saturation processes are investigated. The coupling of the saturation processes for the probe and Raman transitions is complex and exhibits behavior similar to that observed in the electromagnetic induced transparency process. The probe scan spectra are significantly affected by Stark broadening due to the interaction of the pump and Stokes radiation with single-photon resonances between the upper vibration-rotation probe level in the A 2Σ+ electronic levels and vibration-rotation levels in higher lying electronic levels. The ERE-CARS signal intensity is found to be much less sensitive to variations in the collisional dephasing rates under saturation conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN effect KW - NITRIC oxide KW - STARK effect KW - DENSITY matrices KW - NUMERICAL integration KW - RESONANCE N1 - Accession Number: 53421807; Ning Chai 1 Lucht, Robert P. 1; Email Address: lucht@ecn.purdue.edu Kulatilaka, Waruna D. 2 Roy, Sukesh 2 Gord, James R. 3; Affiliation: 1: School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, USA 2: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, Ohio 45431, USA 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 8/28/2010, Vol. 133 Issue 8, p084310; Subject Term: RAMAN effect; Subject Term: NITRIC oxide; Subject Term: STARK effect; Subject Term: DENSITY matrices; Subject Term: NUMERICAL integration; Subject Term: RESONANCE; Number of Pages: 20p; Illustrations: 3 Diagrams, 18 Graphs; Document Type: Article L3 - 10.1063/1.3474702 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53421807&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kulatilaka, Waruna D. AU - Hsu, Paul S. AU - Stauffer, Hans U. AU - Gord, James R. AU - Roy, Sukesh T1 - Direct measurement of rotationally resolved H2 Q-branch Raman coherence lifetimes using time-resolved picosecond coherent anti-Stokes Raman scattering. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/08/23/ VL - 97 IS - 8 M3 - Article SP - 081112 PB - American Institute of Physics SN - 00036951 AB - We report direct measurement of H2 Q-branch Raman coherence lifetimes using time-resolved picosecond coherent anti-Stokes Raman scattering (ps-CARS). A custom-built, high-peak-power, nearly transform-limited ps laser system offers an ideal combination of frequency and temporal resolution for such measurements. The coherence lifetimes measured for pure H2 at room temperature are in good agreement with decay rates that were derived from previous high-resolution studies. Measurements were also performed in binary mixtures of H2–X (X=Ar, N2, CH4, and C2H4). These measurements can be useful for accurate H2 ps-CARS thermometry as well as for studying various H2 collisional energy-transfer processes. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN effect KW - COHERENT states KW - TEMPERATURE measurements KW - DIRECT energy conversion KW - LASERS N1 - Accession Number: 53421556; Kulatilaka, Waruna D. 1; Email Address: waruna.kulatilaka@wpafb.af.mil Hsu, Paul S. 1 Stauffer, Hans U. 1 Gord, James R. 2 Roy, Sukesh 1; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, Ohio 45431, USA 2: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 8/23/2010, Vol. 97 Issue 8, p081112; Subject Term: RAMAN effect; Subject Term: COHERENT states; Subject Term: TEMPERATURE measurements; Subject Term: DIRECT energy conversion; Subject Term: LASERS; Number of Pages: 3p; Illustrations: 2 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.3483871 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53421556&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Scott, Robin C. AU - Leedy, Kevin D. AU - Bayraktaroglu, Burhan AU - Look, David C. AU - Yong-Hang Zhang T1 - Highly conductive ZnO grown by pulsed laser deposition in pure Ar. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/08/16/ VL - 97 IS - 7 M3 - Article SP - 072113 PB - American Institute of Physics SN - 00036951 AB - Ga-doped ZnO was deposited by pulsed laser deposition at 200 °C on SiO2/Si, Al2O3, or quartz in 10 mTorr of pure Ar. The as-grown, bulk resistivity at 300 K is 1.8×10-4 Ω cm, three-times lower than that of films deposited at 200 °C in 10 mTorr of O2 followed by an anneal at 400 °C in forming gas. Furthermore, depth uniformity of the electrical properties is much improved. Mobility analysis shows that this excellent resistivity is mostly due to an increase in donor concentration, rather than a decrease in acceptor concentration. Optical transmittance is approximately 90% in the visible and near-IR spectral regions. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PULSED laser deposition KW - OXIDE minerals KW - COATING processes KW - ROCK-forming minerals KW - OPTICAL coatings N1 - Accession Number: 52997921; Scott, Robin C. 1 Leedy, Kevin D. 2 Bayraktaroglu, Burhan 2 Look, David C. 3; Email Address: david.look@wright.edu Yong-Hang Zhang 4; Affiliation: 1: School of Mechanical, Aerospace, Chemical and Materials Engineering, Arizona State University, Tempe, Arizona 85287, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 3: Semiconductor Research Center, Wright State University, Dayton, Ohio 45435, USA 4: School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA; Source Info: 8/16/2010, Vol. 97 Issue 7, p072113; Subject Term: PULSED laser deposition; Subject Term: OXIDE minerals; Subject Term: COATING processes; Subject Term: ROCK-forming minerals; Subject Term: OPTICAL coatings; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 3p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.3481372 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52997921&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sun, G. AU - Soref, R. A. AU - Cheng, H. H. T1 - Design of an electrically pumped SiGeSn/GeSn/SiGeSn double-heterostructure midinfrared laser. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/08/15/ VL - 108 IS - 3 M3 - Article SP - 033107 PB - American Institute of Physics SN - 00218979 AB - This paper presents the conception, modeling, and simulation of a silicon-based group-IV semiconductor injection laser diode in which the GeSn-alloy active region has a direct band gap wavelength in the 1.8 to 3.0 μm midwave infrared for 6%–12% α-Sn. The strain-free monolithic P-type semiconductor/Intrinsic semiconductor/N-type semiconductor (PIN) bulk heterostructure, grown lattice matched upon a relaxed GeSn-buffer on silicon-on-insulator, is believed to be manufacturable in a complementary metal-oxide semiconductor fab. Detailed modeling is given for the type-I band offsets, carrier lifetimes, infrared gain profile and laser threshold current density Jth in a Fabry–Perot cavity having 20–100 cm-1 loss. The laser’s temperature of operation is determined by a combination of the radiative lifetime and the nonradiative lifetime due to unwanted Auger electron-hole recombination. If we keep Jth below 10 kA/cm2, then we find that this laser requires cooling in the 100–200 K range, whereas Jth at 300 K appears to be too high for a practical device. However, the GeSn quantum-well laser diode does offer a pathway to room-temperature operation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL oxide semiconductors KW - ELECTRONIC circuits KW - METALLIC oxides KW - DIODES KW - ELECTRONS N1 - Accession Number: 52929475; Sun, G. 1 Soref, R. A. 2 Cheng, H. H. 3; Email Address: hhcheng@ntu.edu.tw; Affiliation: 1: Department of Physics, University of Massachusetts Boston, Massachusetts 02125, USA 2: Sensors Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731, USA 3: Center for Condensed Matter Science, National Taiwan University, Taipei 106, Taiwan; Source Info: Aug2010, Vol. 108 Issue 3, p033107; Subject Term: METAL oxide semiconductors; Subject Term: ELECTRONIC circuits; Subject Term: METALLIC oxides; Subject Term: DIODES; Subject Term: ELECTRONS; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 6p; Illustrations: 1 Diagram, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.3467766 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52929475&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ballard, D.L. AU - Weaver, D.S. AU - Pilchak, A.L. AU - Semiatin, S.L. T1 - Hot working of platinum group metal-modified Ni-base superalloys for thermal protection system applications JO - Journal of the European Ceramic Society JF - Journal of the European Ceramic Society Y1 - 2010/08/15/ VL - 30 IS - 11 M3 - Article SP - 2305 EP - 2312 SN - 09552219 AB - Abstract: Platinum group metal-modified nickel-base superalloys are being investigated for use in thin gage applications, such as thermal protection systems, due to their strength and inherent oxidation resistance at temperatures in excess of 1000°C. This paper summarizes deformation behavior and microstructure evolution during multi-hit hot forging and subsequent hot rolling of an experimental two phase γ-Ni+γ′-Ni3Al alloy with a composition of Ni–15Al–5Cr–3Pt–2Ir–0.3Hf (atomic %) with C, B, and Zr additions for grain-boundary refinement and strengthening. The feasibility of hot rolling this material to a final thickness of 250μm and obtaining a nearly fully recrystallized microstructure was demonstrated. However, an anomalous grain-growth behavior was also observed at the surface in the intermediate and final rolled product. [Copyright &y& Elsevier] AB - Copyright of Journal of the European Ceramic Society is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLATINUM group KW - HEAT resistant alloys KW - NICKEL alloys KW - METALS -- Hot working KW - OXIDATION KW - TEMPERATURE effect KW - METALS -- Thermomechanical properties KW - MICROSTRUCTURE KW - Grain growth KW - Structural application KW - Superalloy KW - Thermal protection systems KW - Thermomechanical processing N1 - Accession Number: 51402924; Ballard, D.L. 1; Email Address: donna.ballard@wpafb.af.mil Weaver, D.S. 1 Pilchak, A.L. 2 Semiatin, S.L. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, AFRL/RXLM, 2230 10th Street, OH 45433-7817, USA 2: Universal Technology Corporation, 1270 N. Fairfield Road, Dayton, OH 45432, USA; Source Info: Aug2010, Vol. 30 Issue 11, p2305; Subject Term: PLATINUM group; Subject Term: HEAT resistant alloys; Subject Term: NICKEL alloys; Subject Term: METALS -- Hot working; Subject Term: OXIDATION; Subject Term: TEMPERATURE effect; Subject Term: METALS -- Thermomechanical properties; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: Grain growth; Author-Supplied Keyword: Structural application; Author-Supplied Keyword: Superalloy; Author-Supplied Keyword: Thermal protection systems; Author-Supplied Keyword: Thermomechanical processing; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jeurceramsoc.2010.03.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51402924&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hsu, Paul S. AU - Roy, Sukesh AU - Gord, James R. AU - Patnaik, Anil K. T1 - Magneto-optical control of the group velocity of light in an inhomogeneously broadened medium. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2010/08/10/ VL - 57 IS - 14/15 M3 - Article SP - 1388 EP - 1396 SN - 09500340 AB - We investigate the use of a magnetic field, in conjunction with an elliptically polarized laser field, to control the group velocity of light in an inhomogeneously broadened medium. We show both theoretically and experimentally that the dispersion and hence, the speed of light in an atomic system, having V-configuration with Zeeman sublevels as their excited states, can be effectively controlled magneto-optically. We present approximate analytical solutions for a homogeneously broadened medium and numerical solutions for both a homogeneously and an inhomogeneously broadened medium. We show that while one can tune the speed of light from subluminal to superluminal with the magnetic field in a static or cooled medium with V-type atoms, in hot atoms one can achieve an efficient magneto-optical tunability in the subluminal regime. We experimentally demonstrate such control of light speed using a single elliptically polarized light and a moderately strong magnetic field in a 87Rb vapor cell. We propose to use the optical field for coarse control and the magnetic field for finer control of the light speed in an atomic medium. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC fields KW - SPEED of light KW - PHYSICAL & theoretical chemistry KW - OPTICAL polarization KW - OPTICS KW - atomic coherence KW - electromagnetically induced transparency KW - magneto-optical effects KW - nonlinear optics KW - slow light N1 - Accession Number: 53466565; Hsu, Paul S. 1,2 Roy, Sukesh 3 Gord, James R. 1 Patnaik, Anil K. 1,2; Email Address: anil.patnaik@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433, USA. 2: Department of Physics, Wright State University, Dayton, OH 45435, USA. 3: Spectral Energies, LLC, Dayton, OH 45431, USA.; Source Info: Aug-Sep2010, Vol. 57 Issue 14/15, p1388; Subject Term: MAGNETIC fields; Subject Term: SPEED of light; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: OPTICAL polarization; Subject Term: OPTICS; Author-Supplied Keyword: atomic coherence; Author-Supplied Keyword: electromagnetically induced transparency; Author-Supplied Keyword: magneto-optical effects; Author-Supplied Keyword: nonlinear optics; Author-Supplied Keyword: slow light; Number of Pages: 9p; Illustrations: 2 Diagrams, 6 Graphs; Document Type: Article L3 - 10.1080/09500341003692997 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53466565&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wrzesinski, Paul J. AU - Pestov, Dmitry AU - Lozovoy, Vadim V. AU - Roy, Sukesh AU - Gord, James R. AU - Dantus, Marcos T1 - Pulse Shaping Strategies for Single-beam CARS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2010/08/06/ VL - 1267 IS - 1 M3 - Article SP - 154 EP - 155 PB - American Institute of Physics SN - 0094243X AB - The article focuses on a study related to the pulse-shaping strategies for single-beam Coherent anti-Stokes Raman cattering (CARS). It states that CARS is a powerful technique which is used for chemical-species selective imaging. According to the study, the recent application is the imaging of reacting flow species for combustion diagnostics. In an experiment, the broadband laser spectrum has been produced. A photograph of the nozzle used to produce the carbondioxide jet is also presented. KW - LASER beams KW - COMBUSTION KW - LASER spectroscopy KW - PHOTOGRAPHS KW - NOZZLES N1 - Accession Number: 52720953; Wrzesinski, Paul J. 1 Pestov, Dmitry 1 Lozovoy, Vadim V. 1 Roy, Sukesh 2 Gord, James R. 3 Dantus, Marcos 1,4; Affiliation: 1: Department of Chemistry, Michigan State University, East Lansing, MI 48824. 2: Spectra Energies LLC, 5100 Springfield Street, Suite 301, Dayton, Ohio 45431. 3: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433. 4: Biophotonics Solutions, Inc., Okemos, MI 48864.; Source Info: 8/6/2010, Vol. 1267 Issue 1, p154; Subject Term: LASER beams; Subject Term: COMBUSTION; Subject Term: LASER spectroscopy; Subject Term: PHOTOGRAPHS; Subject Term: NOZZLES; NAICS/Industry Codes: 326199 All Other Plastics Product Manufacturing; NAICS/Industry Codes: 326198 All other plastic product manufacturing; Number of Pages: 2p; Illustrations: 1 Color Photograph; Document Type: Article L3 - 10.1063/1.3482437 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52720953&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Javorsek, II, D. AU - Sturrock, P. A. AU - Lasenby, R. N. AU - Lasenby, A. N. AU - Buncher, J. B. AU - Fischbach, E. AU - Gruenwald, J. T. AU - Jenkins, J. H. AU - Lee, R. H. AU - Mattes, J. J. AU - Morris, D. B. AU - Mudry, R. N. AU - Newport, J. R. T1 - Periodicities in Nuclear Decay Data: Systematic Effects or New Physics? JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2010/08/04/ VL - 1265 IS - 1 M3 - Article SP - 144 EP - 147 PB - American Institute of Physics SN - 0094243X AB - Recent comparisons of independent and unrelated nuclear decay experiments have shown unexplained oscillations that appear to be common in frequency and phase. The most logical explanation for this fluctuation would be some common systematic or environmental factor. In this paper we provide detailed spectral analysis comparisons of several environmental factors with nuclear decay data from an experiment performed at the Brookhaven National Laboratory. We demonstrate that, although none of the environmental factors investigated can be causal, comparisons with ACRIM solar irradiance measurements provide good agreement with the nuclear decay data. This analysis provides the first direct evidence that the cause of the fluctuations has a possible solar origin. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUCTUATIONS (Physics) KW - NUCLEAR physics KW - OSCILLATIONS KW - NUCLEAR energy KW - SOLAR radiation KW - Nuclear Decay KW - Radioactive Decay KW - Spectral Analysis N1 - Accession Number: 52720449; Javorsek, II, D. 1 Sturrock, P. A. 2 Lasenby, R. N. 3 Lasenby, A. N. 4 Buncher, J. B. 5 Fischbach, E. 5 Gruenwald, J. T. 5 Jenkins, J. H. 5,6 Lee, R. H. 7 Mattes, J. J. 5 Morris, D. B. 7 Mudry, R. N. 7,8 Newport, J. R. 5; Affiliation: 1: 411th Flight Test Squadron, 412th Test Wing, Edwards AFB, CA 93524 USA. 2: Center for Space Science Astrophysics, Stanford University, Stanford, CA 94305 USA. 3: St. John's College, Cambridge, CB2 1TP, UK. 4: Astrophysics Group, Cavendish Laboratory, Cambridge, CB3 0HE, UK. 5: Department of Physics, Purdue University, West Lafayette, IN 47907 USA. 6: School of Nuclear Engineering, Purdue University, West Lafayette, IN 47907 USA. 7: Department of Physics, United States Air Force Academy, CO 80920 USA. 8: Training Squadron 3, Training Air Wing 5, NAS Whiting Field, Milton, FL 32570 USA.; Source Info: 8/4/2010, Vol. 1265 Issue 1, p144; Subject Term: FLUCTUATIONS (Physics); Subject Term: NUCLEAR physics; Subject Term: OSCILLATIONS; Subject Term: NUCLEAR energy; Subject Term: SOLAR radiation; Author-Supplied Keyword: Nuclear Decay; Author-Supplied Keyword: Radioactive Decay; Author-Supplied Keyword: Spectral Analysis; NAICS/Industry Codes: 221113 Nuclear Electric Power Generation; Number of Pages: 4p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.3480152 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52720449&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Javorsek, II, D. AU - Kerford, J. L. AU - Stewart, C. A. AU - Buncher, J. B. AU - Fischbach, E. AU - Gruenwald, J. T. AU - Heim, J. AU - Hoft, A. W. AU - Horan, T. J. AU - Jenkins, J. H. AU - Kohler, M. AU - Lee, R. H. AU - Longman, A. AU - Mattes, J. J. AU - Mohsinally, T. AU - Morreale, B. AU - Morris, D. B. AU - Mudry, R. AU - Newport, J. R. AU - O'Keefe, D. T1 - Preliminary Results from Nuclear Decay Experiments Performed During the Solar Eclipse of August 1, 2008. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2010/08/04/ VL - 1265 IS - 1 M3 - Article SP - 178 EP - 179 PB - American Institute of Physics SN - 0094243X AB - Recent developments in efforts to determine the cause of anomalous experimental nuclear decay fluctuations suggest a possible solar influence. Here we report on the preliminary results from several nuclear decay experiments performed at Thule Air Base in Greenland during the Solar Eclipse that took place on 1 August 2008. Because of the high northern latitude and time of year, the Sun never set and thereby provided relatively stabilized conditions for nearly all environmental factors. An exhaustive list of relevant factors were monitored during the eclipse to help rule out possible systematic effects due to external influences. In addition to the normal temperature, pressure, humidity, and cloud cover associated with the outside ambient observations, we included similar measurements within the laboratory along with monitoring of the power supply output, local neutron count rates, and the Earth’s local magnetic and electric fields. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLES (Nuclear physics) KW - NUCLEAR counters KW - SOLAR eclipses KW - ELECTROMAGNETIC fields KW - NUCLEAR physics KW - Radioactive Decay KW - Solar Eclipse N1 - Accession Number: 52720441; Javorsek, II, D. 1 Kerford, J. L. 2,3 Stewart, C. A. 2,3 Buncher, J. B. 2 Fischbach, E. 2 Gruenwald, J. T. 2 Heim, J. 2 Hoft, A. W. 2,3 Horan, T. J. 2,4 Jenkins, J. H. 2,5 Kohler, M. 2 Lee, R. H. 6 Longman, A. 2 Mattes, J. J. 2 Mohsinally, T. 2 Morreale, B. 6 Morris, D. B. 6 Mudry, R. 6,7 Newport, J. R. 2 O'Keefe, D. 6; Affiliation: 1: 411th Flight Test Squadron, 412th Test Wing, Edwards AFB, CA 93524. 2: Department of Physics, Purdue University, West Lafayette, IN 47907. 3: Detachment 220, Air Force Reserve Officer Training Corps, West Lafayette, IN 47907. 4: 47th Operations Support Squadron, 47th Flying Training Wing, Laughlin AFB, TX 78843. 5: School of Nuclear Engineering, Purdue University, West Lafayette, IN 47907. 6: Department of Physics, United States Air Force Academy, CO 80920. 7: Training Squadron 3, Training Air Wing 5, NAS Whiting Field, Milton, FL 32570.; Source Info: 8/4/2010, Vol. 1265 Issue 1, p178; Subject Term: PARTICLES (Nuclear physics); Subject Term: NUCLEAR counters; Subject Term: SOLAR eclipses; Subject Term: ELECTROMAGNETIC fields; Subject Term: NUCLEAR physics; Author-Supplied Keyword: Radioactive Decay; Author-Supplied Keyword: Solar Eclipse; Number of Pages: 2p; Document Type: Article L3 - 10.1063/1.3480162 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52720441&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Peri, Someswara R. AU - Kim, Hyeonjae AU - Akgun, Bulent AU - Enlow, Jesse AU - Jiang, Hao AU - Bunning, Timothy J. AU - Li, Xuefa AU - Foster, Mark D. T1 - Structure of copolymer films created by plasma enhanced chemical vapor deposition JO - Polymer JF - Polymer Y1 - 2010/08/04/ VL - 51 IS - 17 M3 - Article SP - 3971 EP - 3977 SN - 00323861 AB - Abstract: The interface structure in copolymer films made using plasma enhanced chemical vapor deposition (PECVD) has been probed for the first time using X-ray reflectivity. Copolymer films made from comonomers benzene (B), octafluorocyclobutane (OFCB), and hexamethyldisiloxane (HMDS) show extremely sharp interfaces and scattering length density depth profiles that are uniform with depth, making them useful for optical applications. The polymer/air interface has an rms roughness (∼5 Å) that is only slightly larger than that of the supporting substrate (∼3 Å). Addition of either benzene or HMDS as a comonomer in the deposition of OFCB alters a transient deposition behavior at the silicon oxide interface that occurs when using only OFCB. For the B–OFCB copolymer films, a facile control of refractive index with monomer feed composition is achieved. A nonlinear variation in the X-ray scattering length density with composition for the HMDS–OFCB copolymer films is consistent with the nonlinear visible light refractive index (632.8 nm) variation reported earlier. [ABSTRACT FROM AUTHOR] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COPOLYMERS KW - THIN films KW - PLASMA-enhanced chemical vapor deposition KW - MOLECULAR structure KW - INTERFACES (Physical sciences) KW - PLASMA polymerization KW - MONOMERS KW - SILOXANES KW - Plasma copolymerization KW - Plasma enhanced chemical vapor deposition N1 - Accession Number: 52876898; Peri, Someswara R. 1 Kim, Hyeonjae 1 Akgun, Bulent 1 Enlow, Jesse 2 Jiang, Hao 2 Bunning, Timothy J. 2 Li, Xuefa 3 Foster, Mark D. 1; Email Address: mfoster@uakron.edu; Affiliation: 1: Institute of Polymer Science and Polymer Engineering, The University of Akron, 170 University Ave., Akron, OH 44325-3909, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 54333, USA 3: Advanced Photon Source X-ray Science Division, Argonne National Laboratory, 9700 South Cass Ave, Argonne, IL 60439, USA; Source Info: Aug2010, Vol. 51 Issue 17, p3971; Subject Term: COPOLYMERS; Subject Term: THIN films; Subject Term: PLASMA-enhanced chemical vapor deposition; Subject Term: MOLECULAR structure; Subject Term: INTERFACES (Physical sciences); Subject Term: PLASMA polymerization; Subject Term: MONOMERS; Subject Term: SILOXANES; Author-Supplied Keyword: Plasma copolymerization; Author-Supplied Keyword: Plasma enhanced chemical vapor deposition; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.polymer.2010.06.055 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52876898&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Christe, Karl O. AU - Dixon, David A. AU - Grant, Daniel J. AU - Haiges, RaIl AU - Tham, Fook S. AU - Vij, Ashwani AU - Vij, Vandana AU - Tsang-Hsiu Wang AU - Wilson, William W. T1 - Dinitrogen Difluoride Chemistry. Improved Syntheses of cis- and trans-N2F2, Synthesis and Characterization of N2F+Sn2F9-, Ordered Crystal Structure of N2F+Sb2F11-, High-Level Electronic Structure Calculations of cis-N2F2, trans-N2F2, F2N=N, and N2F+, and Mechanism of the trans–cis Isomerization of N2F2 JO - Inorganic Chemistry JF - Inorganic Chemistry Y1 - 2010/08/02/ VL - 49 IS - 15 M3 - Article SP - 6823 EP - 6833 SN - 00201669 AB - N2F+ salts are important precursors in the synthesis of N5+ compounds, and better methods are reported for their larger scale production. A new, marginally stable N2F+ salt, N2F+Sn2F9-, was prepared and characterized. An ordered crystal structure was obtained for N2F+Sb2F11-, resulting in the first observation of individual N≡N and N-F bond distances tor N2F+ in the solid phase. The observed N≡N and N-F bond distances of 1 .089(9) and 1.257(8) Å, respectively, are among the shortest experimentally observed N-N and N-F bonds. High-level electronic structure calculations at the CCSD(T) level with correlation-consistent basis sets extrapolated to the complete basis limit show that cis-N2F2 is more stable than trans-N2F2 by 1.4 kcal/mol at 298 K. The calculations also demonstrate that the lowest uncatalyzed pathway for the trans-cis isomerization of N2F2 has a barrier of 60 kcal/mol and involves rotation about the N≡N double bond. This barder is substantially higher than the energy required tor the dissociation of N2F2 to N2 and 2 F. Therefore, some of the N2F2 dissociates before undergoing an uncatalyzed isomerization, with some of the dissociation products probably catalyzing the isomerization. Furthermore, it is shown that the trans-cis isomerization of N2F2 is catalyzed by strong Lewis acids, involves a planar transition state of symmetry Cs, and yields a 9:1 equilibrium misture of cis-N2F2 and trans-N2F2. Esplanations are given for the increased reactivity of cis-N2F2 with Lewis acids and the exclusive formation of cis-N2F2 in the reaction of N2F+ with F- The geometry and vibrational frequencies of the F2NN isomer have also been calculated and imply strong contributions from ionic N2F+ F- resonance structures, similar to those in F3NO and FNO [ABSTRACT FROM AUTHOR] AB - Copyright of Inorganic Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ISOMERIZATION KW - NITROGEN compounds KW - NITROGEN oxides KW - SALTS KW - FLUORINE compounds KW - LEWIS acids KW - REACTION mechanisms (Chemistry) N1 - Accession Number: 52927695; Christe, Karl O. 1 Dixon, David A. 2 Grant, Daniel J. 2 Haiges, RaIl 1 Tham, Fook S. 3 Vij, Ashwani 4 Vij, Vandana 4 Tsang-Hsiu Wang 2 Wilson, William W. 1; Affiliation: 1: Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles. California 90089 2: Department of Chemistry, University of Alabama, Tuscaloosa, Alabama 35487-0336 3: Department of Chemistry, University of California, Riverside, California 92521 4: Space and Missile Propulsion Division, Air Force Research Laboratory (AFRL/RZS), Edwards Air Force Base, California 93524; Source Info: 8/2/2010, Vol. 49 Issue 15, p6823; Subject Term: ISOMERIZATION; Subject Term: NITROGEN compounds; Subject Term: NITROGEN oxides; Subject Term: SALTS; Subject Term: FLUORINE compounds; Subject Term: LEWIS acids; Subject Term: REACTION mechanisms (Chemistry); Number of Pages: 11p; Document Type: Article L3 - 10.1021/ic100471s UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52927695&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Semiatin, S.L. AU - Shanahan, B.W. AU - Meisenkothen, F. T1 - Hot rolling of gamma titanium aluminide foil JO - Acta Materialia JF - Acta Materialia Y1 - 2010/08// VL - 58 IS - 13 M3 - Article SP - 4446 EP - 4457 SN - 13596454 AB - Abstract: Metal flow and microstructure evolution during the thermomechanical processing of thin-gage foil of a near-gamma titanium aluminide alloy, Ti–45.5Al–2Cr–2Nb, with an equiaxed-gamma microstructure was investigated experimentally and theoretically. Foils of thickness of 200–250μm were fabricated via hot rolling of sheet in a can of proprietary design. The variation in gage of the rolled foils was ±15μm except in very sporadic (local) areas, with variations of approximately 60μm relative to the mean. Metallography revealed that the larger thickness variations were associated with large remnant colonies lying in a hard orientation for deformation. To rationalize these observations, a self-consistent model was used to estimate the strain partitioning between the softer (equiaxed-gamma) matrix and the remnant colonies. Furthermore, the efficacy of pre- or post-rolling heat treatment in eliminating remnant colonies was demonstrated and quantified using a static-spheroidization model. The elimination of remnant colonies via spheroidization prior to foil rolling gave rise to improved gage control. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ROLLING (Metalwork) KW - METAL foils KW - TITANIUM alloys KW - MICROSTRUCTURE KW - ANNEALING of metals KW - METALS -- Thermomechanical properties KW - THICKNESS measurement KW - MICROFABRICATION KW - Annealing KW - Deformation inhomogeneities KW - Rolling KW - Spheroidization KW - Titanium aluminides N1 - Accession Number: 51812241; Semiatin, S.L. 1; Email Address: lee.semiatin@wpafb.af.mil Shanahan, B.W. 2 Meisenkothen, F. 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: University of Dayton, 300 College Park, Dayton, OH 45409, USA 3: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, USA; Source Info: Aug2010, Vol. 58 Issue 13, p4446; Subject Term: ROLLING (Metalwork); Subject Term: METAL foils; Subject Term: TITANIUM alloys; Subject Term: MICROSTRUCTURE; Subject Term: ANNEALING of metals; Subject Term: METALS -- Thermomechanical properties; Subject Term: THICKNESS measurement; Subject Term: MICROFABRICATION; Author-Supplied Keyword: Annealing; Author-Supplied Keyword: Deformation inhomogeneities; Author-Supplied Keyword: Rolling; Author-Supplied Keyword: Spheroidization; Author-Supplied Keyword: Titanium aluminides; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332999 All Other Miscellaneous Fabricated Metal Product Manufacturing; NAICS/Industry Codes: 331410 Nonferrous Metal (except Aluminum) Smelting and Refining; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331491 Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331315 Aluminum Sheet, Plate, and Foil Manufacturing; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331221 Rolled Steel Shape Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.actamat.2010.04.042 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51812241&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Georgiadis, Nicholas J. AU - Rizzetta, Donald P. AU - Fureby, Christer T1 - Large-Eddy Simulation: Current Capabilities, Recommended Practices, and Future Research. JO - AIAA Journal JF - AIAA Journal Y1 - 2010/08// VL - 48 IS - 8 M3 - Article SP - 1772 EP - 1784 SN - 00011452 AB - Usage of large-eddy simulation (LES) methods for calculation of turbulent flows has increased substantially in recent years. This paper attempts to 1) provide an assessment of the current capabilities of LES, 2) outline some recommended practices for using LES, and 3) identify future research needs. The assessment considers flow problems for which LES can be successfully applied today and flow problems for which LES still has limitations. The availability of LES and hybrid Reynolds-averaged Navier-Stokes (RANS)/LES in general-purpose codes is discussed. Several important issues for which the LES community has not yet reached a consensus are discussed. These include grid sensitivity studies, application of unstructured grid methods, upwind-biased solvers, and turbulence (subgrid) modeling including continuous hybrid RANS/LES approaches. A section on recommended practices and key considerations tries to provide guidance on some of the important items that need to be addressed in using LES. The paper concludes with a discussion of future research directions, with a focus on work needed to advance the capabilities and reliability of LES for analysis of turbulent flows. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - SIMULATION methods & models KW - TURBULENCE KW - NAVIER-Stokes equations KW - FLUID dynamics N1 - Accession Number: 52939727; Georgiadis, Nicholas J. 1,2 Rizzetta, Donald P. 1,3 Fureby, Christer 1,4; Affiliation: 1: Associate Fellow AIAA 2: NASA John H. Glenn Research Center at Lewis Field, Cleveland, Ohio 44135 3: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 4: Swedish Defense Research Agency--FOI, 147 25 Stockholm, Sweden; Source Info: Aug2010, Vol. 48 Issue 8, p1772; Subject Term: EDDY currents (Electric); Subject Term: SIMULATION methods & models; Subject Term: TURBULENCE; Subject Term: NAVIER-Stokes equations; Subject Term: FLUID dynamics; Number of Pages: 13p; Illustrations: 1 Chart; Document Type: Article L3 - 10.2514/1.J050232 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52939727&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ibey, Bennett L. AU - Mixon, Dustin G. AU - Payne, Jason A. AU - Bowman, Angela AU - Sickendick, Karl AU - Wilmink, Gerald J. AU - Roach, W. Patrick AU - Pakhomov, Andrei G. T1 - Plasma membrane permeabilization by trains of ultrashort electric pulses JO - Bioelectrochemistry JF - Bioelectrochemistry Y1 - 2010/08// VL - 79 IS - 1 M3 - Article SP - 114 EP - 121 SN - 15675394 AB - Abstract: Ultrashort electric pulses (USEP) cause long-lasting increase of cell membrane electrical conductance, and that a single USEP increased cell membrane electrical conductance proportionally to the absorbed dose (AD) with a threshold of about 10mJ/g. The present study extends quantification of the membrane permeabilization effect to multiple USEP and employed a more accurate protocol that identified USEP effect as the difference between post- and pre-exposure conductance values (Δg) in individual cells. We showed that Δg can be increased by either increasing the number of pulses at a constant E-field, or by increasing the E-field at a constant number of pulses. For 60-ns pulses, an E-field threshold of 6kV/cm for a single pulse was lowered to less than 1.7kV/cm by applying 100-pulse or longer trains. However, the reduction of the E-field threshold was only achieved at the expense of a higher AD compared to a single pulse exposure. Furthermore, the effect of multiple pulses was not fully determined by AD, suggesting that cells permeabilized by the first pulse(s) in the train become less vulnerable to subsequent pulses. This explanation was corroborated by a model that treated multiple-pulse exposures as a series of single-pulse exposures and assumed an exponential decline of cell susceptibility to USEP as Δg increased after each pulse during the course of the train. [Copyright &y& Elsevier] AB - Copyright of Bioelectrochemistry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CELL membranes KW - CELLS -- Permeability KW - ELECTRIC conductivity KW - ELECTRIC fields KW - ELECTROPORATION KW - PATCH-clamp techniques (Electrophysiology) KW - CONDUCTION electrons KW - Electroporation KW - Membrane KW - Patch clamp KW - Ultrashort electric pulses N1 - Accession Number: 50392798; Ibey, Bennett L. 1; Email Address: BennettIbey@gmail.com Mixon, Dustin G. 1 Payne, Jason A. 1 Bowman, Angela 2 Sickendick, Karl 1 Wilmink, Gerald J. 1 Roach, W. Patrick 1 Pakhomov, Andrei G. 2; Affiliation: 1: Radio Frequency Radiation Branch, 711th Human Performance Wing, Air Force Research Laboratory, Brooks City Base, San Antonio, TX, United States 2: Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, United States; Source Info: Aug2010, Vol. 79 Issue 1, p114; Subject Term: CELL membranes; Subject Term: CELLS -- Permeability; Subject Term: ELECTRIC conductivity; Subject Term: ELECTRIC fields; Subject Term: ELECTROPORATION; Subject Term: PATCH-clamp techniques (Electrophysiology); Subject Term: CONDUCTION electrons; Author-Supplied Keyword: Electroporation; Author-Supplied Keyword: Membrane; Author-Supplied Keyword: Patch clamp; Author-Supplied Keyword: Ultrashort electric pulses; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.bioelechem.2010.01.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50392798&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varanasi, C. AU - Petry, J. AU - Brunke, L. AU - Yang, B.T. AU - Lanter, W. AU - Burke, J. AU - Wang, H. AU - Bulmer, J.S. AU - Scofield, J. AU - Barnes, P.N. T1 - Growth of high-quality carbon nanotubes on free-standing diamond substrates JO - Carbon JF - Carbon Y1 - 2010/08// VL - 48 IS - 9 M3 - Article SP - 2442 EP - 2446 SN - 00086223 AB - Abstract: Carbon nanotubes (CNTs) were grown on diamond-coated Si substrates and free-standing diamond wafers to develop efficient thermal interface materials for thermal management applications. High-quality, translucent, free-standing diamond substrates were processed in a 5kW microwave plasma chemical vapor deposition (CVD) system using CH4 as precursor. Ni and Ni–9%W–1.5%Fe catalyst islands were deposited to nucleate CNTs directly onto the diamond substrates. Randomly-oriented multi-walled CNTs forming a mat of ∼5μm thickness and consisting of ∼20nm diameter tubes were observed to grow in a thermal CVD system using C2H2 as precursor. Transmission electron microscopy and Raman analyses confirmed the presence of high-quality CNTs on diamond showing a D/G peak ratio of 0.2–0.3 in Raman spectra. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - DIAMONDS KW - SILICON KW - INTERFACES (Physical sciences) KW - MICROWAVE plasmas KW - PLASMA-enhanced chemical vapor deposition KW - METHANE KW - TRANSITION metal catalysts N1 - Accession Number: 50393023; Varanasi, C. 1,2; Email Address: pani.varanasi@us.army.mil Petry, J. 3 Brunke, L. 1 Yang, B.T. 3 Lanter, W. 4 Burke, J. 1 Wang, H. 5 Bulmer, J.S. 3 Scofield, J. 3 Barnes, P.N. 3; Affiliation: 1: University of Dayton Research Institute (UDRI), Dayton, OH 45469, USA 2: Army Research Office, Research Triangle Park, NC 27709, USA 3: Air Force Research Laboratory (AFRL), WPAFB, OH 45433, USA 4: Innovative Scientific Solutions, Inc., Dayton, OH 45440, USA 5: Texas A&M University, College Station, TX 77843, USA; Source Info: Aug2010, Vol. 48 Issue 9, p2442; Subject Term: CARBON nanotubes; Subject Term: DIAMONDS; Subject Term: SILICON; Subject Term: INTERFACES (Physical sciences); Subject Term: MICROWAVE plasmas; Subject Term: PLASMA-enhanced chemical vapor deposition; Subject Term: METHANE; Subject Term: TRANSITION metal catalysts; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 414410 Jewellery and watch merchant wholesalers; NAICS/Industry Codes: 423940 Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.carbon.2010.03.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50393023&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boxx, I. AU - Stöhr, M. AU - Carter, C. AU - Meier, W. T1 - Temporally resolved planar measurements of transient phenomena in a partially pre-mixed swirl flame in a gas turbine model combustor JO - Combustion & Flame JF - Combustion & Flame Y1 - 2010/08// VL - 157 IS - 8 M3 - Article SP - 1510 EP - 1525 SN - 00102180 AB - Abstract: This paper presents observations and analysis of the time-dependent behavior of a 10kW partially pre-mixed, swirl-stabilized methane–air flame exhibiting self-excited thermo-acoustic oscillations. This analysis is based on a series of measurements wherein particle image velocimetry (PIV) and planar laser-induced fluorescence (PLIF) of the OH radical were performed simultaneously at 5kHz repetition rate over durations of 0.8s. Chemiluminescence imaging of the OH* radical was performed separately, also at 5kHz over 0.8s acquisition runs. These measurements were of sufficient sampling frequency and duration to extract usable spatial and temporal frequency information on the medium to large-scale flow-field and heat-release characteristics of the flame. This analysis is used to more fully characterize the interaction between the self-excited thermo-acoustic oscillations and the dominant flow-field structure of this flame, a precessing vortex core (PVC) present in the inner recirculation zone. Interpretation of individual measurement sequences yielded insight into various physical phenomena and the underlying mechanisms driving flame dynamics. It is observed for this flame that location of the reaction zone tracks large-scale fluctuations in axial velocity and also conforms to the passage of large-scale vortical structures through the flow-field. Local extinction of the reaction zone in regions of persistently high principal compressive strain is observed. Such extinctions, however, are seen to be self healing and thus do not induce blowout. Indications of auto-ignition in regions of unburned gas near the exit are also observed. Probable auto-ignition events are frequently observed coincident with the centers of large-scale vortical structures, suggesting the phenomenon is linked to the enhanced mixing and longer residence times associated with fluid at the core of the PVC as it moves through the flame. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSIENTS (Dynamics) KW - FLAME KW - GAS turbines -- Combustion chambers KW - OSCILLATIONS KW - PARTICLE image velocimetry KW - CHEMILUMINESCENCE KW - VORTEX motion KW - FLUCTUATIONS (Physics) KW - STRAINS & stresses (Mechanics) KW - Auto-ignition KW - Combustion diagnostics KW - Gas turbine model combustor KW - kHz OH-PLIF KW - kHz PIV KW - Local extinction KW - Precessing vortex core KW - Swirl flame KW - Turbulent flame N1 - Accession Number: 51811895; Boxx, I. 1; Email Address: Isaac.Boxx@dlr.de Stöhr, M. 1 Carter, C. 2 Meier, W. 1; Affiliation: 1: Institut für Verbrennungstechnik, Deutsches Zentrum für Luft-und Raumfahrt (DLR), Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany 2: Air Force Research Laboratory (AFRL)/PRAS, 1950 Fifth St, Wright-Patterson AFB, OH, USA; Source Info: Aug2010, Vol. 157 Issue 8, p1510; Subject Term: TRANSIENTS (Dynamics); Subject Term: FLAME; Subject Term: GAS turbines -- Combustion chambers; Subject Term: OSCILLATIONS; Subject Term: PARTICLE image velocimetry; Subject Term: CHEMILUMINESCENCE; Subject Term: VORTEX motion; Subject Term: FLUCTUATIONS (Physics); Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: Auto-ignition; Author-Supplied Keyword: Combustion diagnostics; Author-Supplied Keyword: Gas turbine model combustor; Author-Supplied Keyword: kHz OH-PLIF; Author-Supplied Keyword: kHz PIV; Author-Supplied Keyword: Local extinction; Author-Supplied Keyword: Precessing vortex core; Author-Supplied Keyword: Swirl flame; Author-Supplied Keyword: Turbulent flame; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.combustflame.2009.12.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51811895&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lu, Y. C. AU - Jones, D. C. AU - Tandon, G. P. AU - Putthanarat, S. AU - Schoeppner, G. A. T1 - High Temperature Nanoindentation of PMR-15 Polyimide. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2010/08// VL - 50 IS - 4 M3 - Article SP - 491 EP - 499 SN - 00144851 AB - This paper presents the high temperature nanoindentation experiments performed on an aerospace polymer resin–PMR-15 polyimide. The sharp-tipped Berkovich nanoindenter equipped with a hot-stage heating system was used. The indentation experiments were performed using the “hold-at-the-peak” method at various indenter holding times and unloading rates. The creep effect was seen to decrease with increasing holding time and/or unloading rate. Procedures used to minimize the creep effect are investigated at both ambient and elevated temperatures so that the correct contact depth (together with modulus and hardness) can be determined from nanoindentation load-depth curve. The temperature dependent mechanical properties of PMR-15 are measured through the current nanoindenter and results are consistent with those obtained from macroscopic tests. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Mechanical properties KW - STRAINS & stresses (Mechanics) KW - VISCOELASTICITY KW - VISCOELASTIC materials KW - HIGH temperatures KW - POLYIMIDES KW - High temperature KW - Nanoindentation KW - PMR-15 polyimide KW - Viscoelastic creep N1 - Accession Number: 48537037; Lu, Y. C. 1; Email Address: chlu@engr.uky.edu Jones, D. C. 1 Tandon, G. P. 2,3 Putthanarat, S. 2,3 Schoeppner, G. A. 1,2; Affiliation: 1: University of Kentucky, Lexington, KY, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXBC, Wright Patterson AFB, Dayton, OH, USA 3: University of Dayton Research Institute, Dayton, OH, USA; Source Info: Aug2010, Vol. 50 Issue 4, p491; Subject Term: MATERIALS -- Mechanical properties; Subject Term: STRAINS & stresses (Mechanics); Subject Term: VISCOELASTICITY; Subject Term: VISCOELASTIC materials; Subject Term: HIGH temperatures; Subject Term: POLYIMIDES; Author-Supplied Keyword: High temperature; Author-Supplied Keyword: Nanoindentation; Author-Supplied Keyword: PMR-15 polyimide; Author-Supplied Keyword: Viscoelastic creep; Number of Pages: 9p; Illustrations: 13 Graphs; Document Type: Article L3 - 10.1007/s11340-009-9254-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48537037&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kung-Hau Ding AU - Xiaolan Xu AU - Leung Tsang T1 - Electromagnetic Scattering by Bicontinuous Random Microstructures With Discrete Permittivities. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2010/08// VL - 48 IS - 8 M3 - Article SP - 3139 EP - 3151 SN - 01962892 AB - For electromagnetic (EM) scattering by dense media, the traditional approach is to use particles of spheres or ellipsoids that are densely and randomly packed in a background medium. The particles have discrete permittivities that are different from the background medium. The dense-medium model has been applied to themicrowave remote sensing of terrestrial snow. In this paper, we propose a different approach of using a bicontinuous medium with discrete permittivities and study the EM scattering properties using analytical and numerical methods. The bicontinuous medium is a continuous representation of interfaces between inhomogeneities within the medium. Discrete permittivities are then assigned to the inhomogeneities of the structure. The analytical approach is based on the Born approximation using the derived analytical correlation functions. The numerical method is based on the numerical Maxwell model of 3-D (NMM3D) approach. In particular, the discrete-dipole approximation and the conjugate gradient-squared method accelerated by the fast Fourier transform technique are used in solving the volume integral equation. Scattering results of analytical and numerical approaches are compared. Numerical results are illustrated using parameters in microwave remote sensing of terrestrial snow. In the NMM3D simulations, three kinds of convergence tests are conducted, viz., convergence with respect to the discretization size, convergence with respect to the sample size, and convergence with respect to the number of realization. The NMM3D results indicate that the scattering by the bicontinuous medium with a broader size distribution has a weaker frequency dependence than that by the medium with a more narrow size distribution. The frequencydependence power law index can be lower than two, which is very much lower than the power of four in Rayleigh scattering. The NMM3D results also exhibit fairly large cross-polarization returns which account for the local nonisotropic microstructures of bicontinuous media, although the medium is statistically isotropic. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETISM KW - MICROSTRUCTURE KW - PERMITTIVITY KW - RAYLEIGH scattering KW - DIPOLE moments KW - SCATTERING (Physics) KW - Bicontinuous media KW - dense media KW - discrete dipole approximation KW - discrete ransom media KW - frequency dependence KW - NMM3D KW - volume scattering N1 - Accession Number: 52621203; Kung-Hau Ding 1,2; Email Address: kung-hau.ding@hanscom.af.mil Xiaolan Xu 3; Email Address: xlxu@ee.washington.edu Leung Tsang 3,4; Email Address: tsang@ee.washington.edu; Affiliation: 1: Senior Member, IEEE 2: Sensors Directorate, Air Force Research Laboratory, Hanscom Air Force Base, MA 01731 USA 3: Department of Electrical Engineering, University of Washington, Seattle, WA 98195 USA 4: Fellow, IEEE; Source Info: Aug2010, Vol. 48 Issue 8, p3139; Subject Term: ELECTROMAGNETISM; Subject Term: MICROSTRUCTURE; Subject Term: PERMITTIVITY; Subject Term: RAYLEIGH scattering; Subject Term: DIPOLE moments; Subject Term: SCATTERING (Physics); Author-Supplied Keyword: Bicontinuous media; Author-Supplied Keyword: dense media; Author-Supplied Keyword: discrete dipole approximation; Author-Supplied Keyword: discrete ransom media; Author-Supplied Keyword: frequency dependence; Author-Supplied Keyword: NMM3D; Author-Supplied Keyword: volume scattering; Number of Pages: 13p; Document Type: Article L3 - 10.1109/TGRS.2010.2043953 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52621203&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Turchi, Peter J. AU - Roderick, Norman F. AU - Degnan, James H. AU - Frese, Michael H. AU - Amdahl, David J. T1 - Review of Some Plasma Gun Techniques for Fusion at Megagauss Energy Densities. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2010/08//Aug2010 Part 1 VL - 38 IS - 8 M3 - Article SP - 1864 EP - 1873 SN - 00933813 AB - Plasma guns offer opportunities to generate and direct plasma flows at high energy density. Typically, such guns comprise coaxial electrodes that are connected to high-current sources (e.g., capacitor banks, pulse lines, inductive stores, or magnetic-flux-compression generators). The basic interactions include ionization of materials such as injected gas or preinstalled wires/foils, acceleration of these materials by the Lorentz force, and expulsion of the resulting plasma flows. We review the use of a particular arrangement in the form of a plasma flow switch that acts as a multimegampere commutator, but it can also provide a magnetized-plasma target for compression by an imploding liner. In a quite separate concept, a plurality of quasi-steady plasma guns in a spherical array provides converging, collimated jets to compress plasma with stand-off from the plasma generators and chamber walls. Such stand-off in a repetitively pulsed system can be crucial for the development of fusion power reactors at megagauss energy densities. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA devices KW - PLASMA (Ionized gases) KW - LORENTZ force KW - CAPACITOR banks KW - ELECTROMAGNETIC fields KW - NUCLEAR fusion KW - Arrays KW - Electrodes KW - Insulators KW - Magnetic separation KW - Megagauss KW - nuclear fusion KW - plasma guns KW - Plasmas KW - Weapons KW - Wires N1 - Accession Number: 52928720; Turchi, Peter J. 1 Roderick, Norman F. 2 Degnan, James H. 3 Frese, Michael H. 2 Amdahl, David J. 3; Affiliation: 1: Los Alamos National Laboratory, Los Alamos, NM, USA 2: NumerEx, Albuquerque, USA 3: Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, NM , USA; Source Info: Aug2010 Part 1, Vol. 38 Issue 8, p1864; Subject Term: PLASMA devices; Subject Term: PLASMA (Ionized gases); Subject Term: LORENTZ force; Subject Term: CAPACITOR banks; Subject Term: ELECTROMAGNETIC fields; Subject Term: NUCLEAR fusion; Author-Supplied Keyword: Arrays; Author-Supplied Keyword: Electrodes; Author-Supplied Keyword: Insulators; Author-Supplied Keyword: Magnetic separation; Author-Supplied Keyword: Megagauss; Author-Supplied Keyword: nuclear fusion; Author-Supplied Keyword: plasma guns; Author-Supplied Keyword: Plasmas; Author-Supplied Keyword: Weapons; Author-Supplied Keyword: Wires; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TPS.2010.2051043 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52928720&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kharoufeh, Jeffrey P. AU - Solo, Christopher J. AU - Ulukus, M. Yasin T1 - Semi-Markov models for degradation-based reliability. JO - IIE Transactions JF - IIE Transactions Y1 - 2010/08// VL - 42 IS - 8 M3 - Article SP - 599 EP - 612 PB - Taylor & Francis Ltd SN - 0740817X AB - This article presents hybrid, degradation-based reliability models for a single-unit system whose degradation is driven by a semi-Markov environment. The primary objective is to develop a mathematical framework and associated computational techniques that unite environmental data and stochastic failure models to assess the current or future health of the system. By employing phase-type distributions, it is possible to construct a surrogate environment process that is amenable to analysis by exact Markovian techniques to obtain reliability estimates. The viability of the proposed approach and the quality of the approximations are demonstrated in two numerical experiments. The numerical results indicate that remarkably accurate lifetime distribution and moment approximations are attainable. [ABSTRACT FROM AUTHOR] AB - Copyright of IIE Transactions is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RELIABILITY (Engineering) KW - MARKOV processes KW - STOCHASTIC analysis KW - STOCHASTIC processes KW - APPROXIMATION theory KW - NUMERICAL analysis KW - phase-type distributions KW - Reliability KW - semi-Markov environment N1 - Accession Number: 51095662; Kharoufeh, Jeffrey P. 1; Email Address: jkharouf@pitt.edu Solo, Christopher J. 2; Email Address: christopher.solo@usafa.edu Ulukus, M. Yasin 1; Affiliation: 1: Department of Industrial Engineering, University of Pittsburgh, 1048 Benedum Hall, 3700 O'Hara Street, Pittsburgh, PA 15261, USA 2: Department of Mathematical Sciences, US Air Force Academy, 2354 Fairchild Drive, Rm 6D-198, United States Air Force Academy, CO 80840, USA; Source Info: Aug2010, Vol. 42 Issue 8, p599; Subject Term: RELIABILITY (Engineering); Subject Term: MARKOV processes; Subject Term: STOCHASTIC analysis; Subject Term: STOCHASTIC processes; Subject Term: APPROXIMATION theory; Subject Term: NUMERICAL analysis; Author-Supplied Keyword: phase-type distributions; Author-Supplied Keyword: Reliability; Author-Supplied Keyword: semi-Markov environment; Number of Pages: 14p; Illustrations: 5 Charts, 2 Graphs; Document Type: Article L3 - 10.1080/07408170903394371 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51095662&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Visbal, Miguel T1 - Simulation of Flow Control Using Dielectric-Barrier-Discharge Plasma Actuators. JO - International Journal of Computational Fluid Dynamics JF - International Journal of Computational Fluid Dynamics Y1 - 2010/08// VL - 24 IS - 7 M3 - Article SP - 235 EP - 235 SN - 10618562 KW - AERODYNAMICS KW - PLASMA devices KW - SIMULATION methods & models KW - ELECTRIC discharges KW - ACTUATORS KW - SYMMETRY (Physics) KW - ENERGY consumption KW - TURBULENCE N1 - Accession Number: 55473959; Visbal, Miguel 1; Affiliation: 1: Air Force Research Laboratory, OH; Source Info: Aug2010, Vol. 24 Issue 7, p235; Subject Term: AERODYNAMICS; Subject Term: PLASMA devices; Subject Term: SIMULATION methods & models; Subject Term: ELECTRIC discharges; Subject Term: ACTUATORS; Subject Term: SYMMETRY (Physics); Subject Term: ENERGY consumption; Subject Term: TURBULENCE; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.1080/10618562.2010.539823 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55473959&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Visbal, Miguel R. T1 - Strategies for control of transitional and turbulent flows using plasma-based actuators. JO - International Journal of Computational Fluid Dynamics JF - International Journal of Computational Fluid Dynamics Y1 - 2010/08// VL - 24 IS - 7 M3 - Article SP - 237 EP - 258 SN - 10618562 AB - An exploratory numerical study of the control of transitional and turbulent separated flows by means of dielectric-barrier-discharge (DBD) actuators is presented. The flow fields are simulated employing a high-fidelity Navier-Stokes solver augmented with a phenomenological model representing the plasma-induced body forces imparted by the actuator on the fluid. Several applications are considered, including interaction of an actuator with a laminar boundary layer, suppression of wing stall, control of boundary layer transition on a plate, control of laminar separation over a ramp, and turbulent separation over a wall-mounted hump. Effective suppression of stall over a NACA 0015 airfoil at moderate Reynolds numbers is demonstrated using either co-flow or counter-flow actuators pulsed at a sufficiently high frequency. By contrast, continuous actuation is found to provide little control of separation. For a laminar boundary layer developing along a flat plate, a counter-flow DBD actuator is shown to provide an effective on-demand tripping device. This property is exploited for the suppression of laminar separation over a ramp. Control of turbulent boundary-layer separation over a wall-mounted hump suggests that once the flow is turbulent, control effectiveness is only achieved for higher actuator strengths with implications for the scalability of DBD devices to higher freestream velocities. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Computational Fluid Dynamics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSITION flow KW - TURBULENCE KW - PLASMA devices KW - ACTUATORS KW - ELECTRIC discharges KW - NAVIER-Stokes equations KW - SIMULATION methods & models KW - PHENOMENOLOGICAL theory (Physics) KW - flow control KW - large-eddy simulation KW - plasma actuators KW - transitional flows KW - unsteady flows N1 - Accession Number: 55473962; Visbal, Miguel R. 1; Affiliation: 1: Computational Sciences Branch, Air Vehicles Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Aug2010, Vol. 24 Issue 7, p237; Subject Term: TRANSITION flow; Subject Term: TURBULENCE; Subject Term: PLASMA devices; Subject Term: ACTUATORS; Subject Term: ELECTRIC discharges; Subject Term: NAVIER-Stokes equations; Subject Term: SIMULATION methods & models; Subject Term: PHENOMENOLOGICAL theory (Physics); Author-Supplied Keyword: flow control; Author-Supplied Keyword: large-eddy simulation; Author-Supplied Keyword: plasma actuators; Author-Supplied Keyword: transitional flows; Author-Supplied Keyword: unsteady flows; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 22p; Illustrations: 13 Diagrams, 1 Chart, 11 Graphs; Document Type: Article L3 - 10.1080/10618562.2010.533123 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55473962&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gaitonde, Datta T1 - Three-dimensional plasma-based flow control simulations with high-fidelity coupled first-principles approaches. JO - International Journal of Computational Fluid Dynamics JF - International Journal of Computational Fluid Dynamics Y1 - 2010/08// VL - 24 IS - 7 M3 - Article SP - 259 EP - 279 SN - 10618562 AB - Numerical simulations are employed to understand flow control mechanisms of asymmetric dielectric barrier discharges in the context of a NACA 0015 wing section. The body force is obtained separately from phenomenological and first-principles based models, respectively. A procedure to couple unsteady force fields obtained from multi-fluid models to very high-fidelity implicit large-eddy simulations is developed, implemented and evaluated. The article discusses the effect of Reynolds number, angle of attack, actuator strength and location as well as unsteadiness at radio frequency excitation and wide-spectrum duty cycle variation. Turbulence structure, streamwise vorticity generation mechanisms and acoustic fields are described. The results are assimilated in the context of the combined impact of near wall momentum enhancement and transition to turbulence, which appear to be the dominant effects at low- and high-Reynolds numbers respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Computational Fluid Dynamics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA (Ionized gases) KW - COUPLED mode theory (Wave-motion) KW - TURBULENCE KW - SIMULATION methods & models KW - NUMERICAL analysis KW - PHENOMENOLOGICAL theory (Physics) KW - RADIO frequency KW - ELECTRONIC excitation KW - coupled analyses KW - plasma flow control KW - turbulence N1 - Accession Number: 55473961; Gaitonde, Datta 1; Affiliation: 1: Air Force Research Laboratory, Air Vechicles Directorate, Computational Sciences, Centre, WFAB, USA; Source Info: Aug2010, Vol. 24 Issue 7, p259; Subject Term: PLASMA (Ionized gases); Subject Term: COUPLED mode theory (Wave-motion); Subject Term: TURBULENCE; Subject Term: SIMULATION methods & models; Subject Term: NUMERICAL analysis; Subject Term: PHENOMENOLOGICAL theory (Physics); Subject Term: RADIO frequency; Subject Term: ELECTRONIC excitation; Author-Supplied Keyword: coupled analyses; Author-Supplied Keyword: plasma flow control; Author-Supplied Keyword: turbulence; Number of Pages: 21p; Illustrations: 10 Diagrams, 13 Graphs; Document Type: Article L3 - 10.1080/10618560902835566 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55473961&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, J. AU - Spowart, J.E. AU - Jones, J.W. T1 - The role of microstructural variability on the very high-cycle fatigue behavior of discontinuously-reinforced aluminum metal matrix composites using ultrasonic fatigue JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2010/08// VL - 32 IS - 8 M3 - Article SP - 1243 EP - 1254 SN - 01421123 AB - Abstract: The fatigue behavior of two 2009/SiC/15p-T4 DRA composites has been investigated in the very high-cycle fatigue regime (VHCF, 107 ⩽ Nf ⩽109 cycles) using ultrasonic fatigue to achieve the very high cycle counts. One composite was produced to have a very homogeneous spatial distribution with minimal particle clustering and the other was produced to have a relatively heterogeneous distribution with significant particle clustering. Fatigue cracks initiated predominantly at AlCuFe inclusions in the homogeneous material and no crack initiation was observed at SiC particle clusters. Conversely, fatigue cracks initiated predominantly at clusters of SiC particles in the heterogeneous material and no crack initiation at inclusions was observed. Fatigue lives in both composites approaching 109 cycles exhibited minimal variation in lifetime and subsurface crack initiation was observed in all cases. Differences in the crack initiation behavior between the two composites were attributed primarily to variations in the spatial distribution of the reinforcement phase. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - MATERIALS -- Fatigue KW - METALLIC composites KW - ULTRASONIC testing KW - SILICON carbide KW - DISTRIBUTION (Probability theory) KW - SURFACES (Technology) KW - Discontinuously reinforced aluminum composite KW - Microstructural variability KW - Ultrasonic fatigue KW - Very high-cycle fatigue N1 - Accession Number: 49821648; Huang, J. 1 Spowart, J.E. 2; Email Address: Jonathan.Spowart@wpafb.af.mil Jones, J.W. 1; Affiliation: 1: Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI, United States 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLMD, Wright-Patterson AFB, OH, United States; Source Info: Aug2010, Vol. 32 Issue 8, p1243; Subject Term: MICROSTRUCTURE; Subject Term: MATERIALS -- Fatigue; Subject Term: METALLIC composites; Subject Term: ULTRASONIC testing; Subject Term: SILICON carbide; Subject Term: DISTRIBUTION (Probability theory); Subject Term: SURFACES (Technology); Author-Supplied Keyword: Discontinuously reinforced aluminum composite; Author-Supplied Keyword: Microstructural variability; Author-Supplied Keyword: Ultrasonic fatigue; Author-Supplied Keyword: Very high-cycle fatigue; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.ijfatigue.2010.01.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49821648&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Frehlich, Rod AU - Sharman, Robert AU - Vandenberghe, Francois AU - Yu, Wei AU - Liu, Yubao AU - Knievel, Jason AU - Jumper, George T1 - Estimates of Cn2 from Numerical Weather Prediction Model Output and Comparison with Thermosonde Data. JO - Journal of Applied Meteorology & Climatology JF - Journal of Applied Meteorology & Climatology Y1 - 2010/08// VL - 49 IS - 8 M3 - Article SP - 1742 EP - 1755 PB - American Meteorological Society SN - 15588424 AB - Area-averaged estimates of Cn2 from high-resolution numerical weather prediction (NWP) model output are produced from local estimates of the spatial structure functions of refractive index with corrections for the inherent smoothing and filtering effects of the underlying NWP model. The key assumptions are the existence of a universal statistical description of small-scale turbulence and a locally universal spatial filter for the NWP model variables. Under these assumptions, spatial structure functions of the NWP model variables can be related to the structure functions of the atmospheric variables and extended to the smaller underresolved scales. The shape of the universal spatial filter is determined by comparisons of model structure functions with the climatological spatial structure function determined from an archive of aircraft data collected in the upper troposphere and lower stratosphere. This method of computing Cn2 has an important advantage over more traditional methods that are based on vertical differences because the structure function–based estimates avoid reference to the turbulence outer length scale. To evaluate the technique, NWP model–derived structure-function estimates of Cn2 are compared with nighttime profiles of Cn2 derived from temperature structure-function sensors attached to a rawinsonde (thermosonde) near Holloman Air Force Base in the United States. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Meteorology & Climatology is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WEATHER forecasting KW - ESTIMATES KW - ATMOSPHERIC radio refractivity KW - TURBULENCE KW - BEAMFORMING KW - TROPOSPHERE KW - STRATOSPHERE KW - Aircraft observations KW - Model evaluation/performance KW - Numerical weather prediction KW - Radiosonde observations KW - Turbulence N1 - Accession Number: 53420343; Frehlich, Rod 1; Email Address: frehlich@ucar.edu Sharman, Robert 1 Vandenberghe, Francois 1 Yu, Wei 1 Liu, Yubao 1 Knievel, Jason 1 Jumper, George 2; Affiliation: 1: National Center for Atmospheric Research,* Boulder, Colorado 2: Battlespace Environment Division, Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts; Source Info: Aug2010, Vol. 49 Issue 8, p1742; Subject Term: WEATHER forecasting; Subject Term: ESTIMATES; Subject Term: ATMOSPHERIC radio refractivity; Subject Term: TURBULENCE; Subject Term: BEAMFORMING; Subject Term: TROPOSPHERE; Subject Term: STRATOSPHERE; Author-Supplied Keyword: Aircraft observations; Author-Supplied Keyword: Model evaluation/performance; Author-Supplied Keyword: Numerical weather prediction; Author-Supplied Keyword: Radiosonde observations; Author-Supplied Keyword: Turbulence; NAICS/Industry Codes: 541990 All Other Professional, Scientific, and Technical Services; Number of Pages: 14p; Illustrations: 3 Charts, 8 Graphs, 1 Map; Document Type: Article L3 - 10.1175/2010JAMC2350.1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53420343&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucas, M. S. AU - Munõz, J. A. AU - Mauger, L. AU - Li, Chen W. AU - Sheets, A. O. AU - Turgut, Z. AU - Horwath, J. AU - Abernathy, L. AU - Stone, M. B. AU - Delaire, O. AU - Xiao, Yuming AU - Fultz, B. T1 - Effects of chemical composition and B2 order on phonons in bcc Fe–Co alloys. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/08// VL - 108 IS - 2 M3 - Article SP - 023519 PB - American Institute of Physics SN - 00218979 AB - The phonon density of states (DOS) gives insight into interatomic forces and provides the vibrational entropy, making it a key thermodynamic function for understanding alloy phase transformations. Nuclear resonant inelastic x-ray scattering and inelastic neutron scattering were used to measure the chemical dependence of the DOS of bcc Fe–Co alloys. For the equiatomic alloy, the A2→B2 (chemically disordered→chemically ordered) phase transformation caused measurable changes in the phonon spectrum. The measured change in vibrational entropy upon ordering was -0.02±0.02 kB/atom, suggesting that vibrational entropy results in a reduction in the order–disorder transition temperature by 60±60 K. The Connolly–Williams cluster inversion method was used to obtain interaction DOS (IDOS) curves that show how point and pair variables altered the phonon DOS of disordered bcc Fe–Co alloys. These IDOS curves accurately captured the change in the phonon DOS and vibrational entropy of the B2 ordering transition. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHONONS KW - IRON-cobalt alloys KW - IRON alloys KW - COBALT alloys KW - QUASIPARTICLES (Physics) N1 - Accession Number: 52616221; Lucas, M. S. 1,2; Email Address: matthew.steven.lucas@gmail.com Munõz, J. A. 3 Mauger, L. 3 Li, Chen W. 3 Sheets, A. O. 1 Turgut, Z. 1 Horwath, J. 1 Abernathy, L. 4 Stone, M. B. 4 Delaire, O. 4 Xiao, Yuming 5 Fultz, B. 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 2: UTC Inc., 1270 North Fairfield Road, Dayton, Ohio 45432, USA 3: W. M. Keck Laboratory, California Institute of Technology, 138-78, Pasadena, California 91125, USA 4: Oak Ridge National Laboratory, 1, Bethel Valley Road, Oak Ridge, Tennessee 37831, USA 5: HPCAT, Geophysical Laboratory, Carnegie Institution of Washington, 9700 South Cass Ave., Bldg. 434E, Argonne, IL 60439, USA; Source Info: Aug2010, Vol. 108 Issue 2, p023519; Subject Term: PHONONS; Subject Term: IRON-cobalt alloys; Subject Term: IRON alloys; Subject Term: COBALT alloys; Subject Term: QUASIPARTICLES (Physics); NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 423510 Metal Service Centers and Other Metal Merchant Wholesalers; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 6p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.3456500 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52616221&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Moshirfar, Majid AU - Schliesser, Joshua A. AU - Chang, Joann C. AU - Oberg, Thomas J. AU - Mifflin, Mark D. AU - Townley, Richard AU - Livingston, Myrna K. AU - Kurz, Christopher J. T1 - Visual outcomes after wavefront-guided photorefractive keratectomy and wavefront-guided laser in situ keratomileusis: Prospective comparison JO - Journal of Cataract & Refractive Surgery JF - Journal of Cataract & Refractive Surgery Y1 - 2010/08// VL - 36 IS - 8 M3 - Article SP - 1336 EP - 1343 SN - 08863350 AB - Purpose: To compare visual outcomes between wavefront-guided photorefractive keratectomy (PRK) and wavefront-guided laser in situ keratomileusis (LASIK). Setting: Academic center, Salt Lake City, Utah, USA. Methods: In this randomized prospective study, myopic eyes were treated with wavefront-guided PRK and or wavefront-guided LASIK using a Visx Star S4 CustomVue platform with iris registration. Primary outcome measures were uncorrected (UDVA) and corrected (CDVA) distance visual acuities and manifest refraction. Secondary outcome measures were higher-order aberrations (HOAs) and contrast sensitivity. Results: The PRK group comprised 101 eyes and the LASIK group, 102 eyes. At 6 months, the mean UDVA was −0.03 logMAR ± 0.10 [SD] (20/19) and 0.07 ± 0.09 logMAR (20/24), respectively (P = .544). In both groups, 75% eyes achieved a UDVA of 20/20 or better (P = .923); 77% of eyes in the PRK group and 88% in the LASIK group were within ±0.50 diopter of emmetropia (P = .760). There was no statistically significant difference between groups in contrast sensitivity at 3, 6, 12, or 18 cycles per degree. The mean postoperative HOA root mean square was 0.45 ± 0.13 μm in the PRK group and 0.59 ± 0.22 μm in the LASIK group (P = .012), representing an increase factor of 1.22 and 1.74, respectively. Conclusions: Wavefront-guided PRK and wavefront-guided LASIK had similar efficacy, predictability, safety, and contrast sensitivity; however, wavefront-guided PRK induced statistically fewer HOAs than wavefront-guided LASIK at 6 months. Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned. [Copyright &y& Elsevier] AB - Copyright of Journal of Cataract & Refractive Surgery is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASIK (Eye surgery) KW - OUTCOME assessment (Medical care) KW - LONGITUDINAL method KW - VISUAL acuity KW - EYE -- Refractive errors KW - CONTRAST sensitivity (Vision) KW - CORNEA -- Laser surgery N1 - Accession Number: 52565789; Moshirfar, Majid; Email Address: majid.moshirfar@hsc.utah.edu Schliesser, Joshua A. 1 Chang, Joann C. 1 Oberg, Thomas J. 1 Mifflin, Mark D. 1 Townley, Richard 1 Livingston, Myrna K. 1 Kurz, Christopher J. 1; Affiliation: 1: From the Department of Ophthalmology and Visual Sciences (Moshirfar, Chang, Oberg, Mifflin, Livingston), John A. Moran Eye Center, University of Utah School of Medicine (Schliesser), Salt Lake City, Utah; Wilford Hall Medical Center (Townley), Lackland Air Force Base, Texas; David Grant United States Air Force Medical Center (Kurz), Travis Air Force Base, California, USA; Source Info: Aug2010, Vol. 36 Issue 8, p1336; Subject Term: LASIK (Eye surgery); Subject Term: OUTCOME assessment (Medical care); Subject Term: LONGITUDINAL method; Subject Term: VISUAL acuity; Subject Term: EYE -- Refractive errors; Subject Term: CONTRAST sensitivity (Vision); Subject Term: CORNEA -- Laser surgery; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jcrs.2010.02.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52565789&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yilmaz, T. AU - Ol, M. AU - Rockwell, D. T1 - Scaling of flow separation on a pitching low aspect ratio plate JO - Journal of Fluids & Structures JF - Journal of Fluids & Structures Y1 - 2010/08// VL - 26 IS - 6 M3 - Article SP - 1034 EP - 1041 SN - 08899746 AB - Abstract: We use two different dye injection approaches, in two different water tunnels, to visualize the formation and subsequent evolution of leading-edge vortices and related separated structures, for a pitching low aspect ratio plate. The motion is a smoothed linear pitch ramp from 0° to 40° incidence, brief hold, and return to 0°, executed at reduced pitch rates ranging from 0.1 to 0.35 and about various pivot locations. All cases evince a leading edge vortex with pronounced axial flow, which leads to formation of large-scale, three-dimensional flow structures, culminating in a large vortical structure centered at the wing symmetry plane. Pitch is also compared to plunge, where the plunge-induced angle of attack is taken as the geometric pitch incidence angle, ignoring pitch-rate effects. At successively increasing values of convective time C/U, the three-dimensional patterns of the flow structure are remarkably similar for the pitching and plunging motions. The similarity of these patterns persists, though they are shifted in time, for variation of either the location of the pitching axis or the dimensionless pitch rate. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCALING laws (Statistical physics) KW - AERODYNAMICS KW - UNSTEADY flow (Fluid dynamics) KW - FLOW visualization KW - FLUID-structure interaction KW - VORTEX motion KW - SYMMETRY (Physics) KW - Aerodynamics KW - Flow–structure interaction KW - Separated flows KW - Unsteady flow KW - Visualization KW - Vortices N1 - Accession Number: 53951591; Yilmaz, T. 1 Ol, M. 2 Rockwell, D. 1; Email Address: dor0@lehigh.edu; Affiliation: 1: Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA 18015, USA 2: US Air Force Research Laboratory, Air Vehicles Directorate, Wright-Patterson AFB, OH 45433-7542, USA; Source Info: Aug2010, Vol. 26 Issue 6, p1034; Subject Term: SCALING laws (Statistical physics); Subject Term: AERODYNAMICS; Subject Term: UNSTEADY flow (Fluid dynamics); Subject Term: FLOW visualization; Subject Term: FLUID-structure interaction; Subject Term: VORTEX motion; Subject Term: SYMMETRY (Physics); Author-Supplied Keyword: Aerodynamics; Author-Supplied Keyword: Flow–structure interaction; Author-Supplied Keyword: Separated flows; Author-Supplied Keyword: Unsteady flow; Author-Supplied Keyword: Visualization; Author-Supplied Keyword: Vortices; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jfluidstructs.2010.07.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53951591&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pham, K. D. T1 - New Risk-Averse Control Paradigm for Stochastic Two-Time-Scale Systems and Performance Robustness. JO - Journal of Optimization Theory & Applications JF - Journal of Optimization Theory & Applications Y1 - 2010/08// VL - 146 IS - 2 M3 - Article SP - 511 EP - 537 SN - 00223239 AB - This work is concerned with the optimal control of stochastic two-time-scale linear systems with performance measure in a finite-horizon integral-quadratic form. Nature, modeled by stationary Wiener processes whose mean and covariance statistics are known, malevolently affects the state dynamics and output observations of the control problem class. With particular focus on the system performance robustness, the use of higher-order statistics or cumulants associated with the performance measure of chi-squared random variable type makes it possible to restate the stochastic control problem as the solution of a deterministic one, which subsequently allows disregarding all sample-path realizations by Nature acting on the original problem. The distinguishing feature of the risk-averse control paradigm is that the performance index is multiobjective in nature, being composed of both risk-neutral integrals and risk-sensitive costs associated with the ubiquitous linear-quadratic-Gaussian (LQG) and rather recent risk-sensitive control problems. Another issue that makes this class of control particularly interesting is the fact that Nature has the ability to exercise all the higher-order characteristics of the uncertain chi-squared performance measure. The efficient controller, having access to Nature’s apriori statistical knowledge and employing dynamic output feedback, seeks to minimize the performance uncertainty that Nature can do over the set of mixed random realizations. Furthermore, the results herein potentially generalize the existing results for the single-objective H, H, and risk-sensitive control problems to a substantially larger class of systems, wherein Nature selects mixed sample-path realizations that need not be Gaussian. That is, the entire probability density function of Nature’s choices is not necessarily known except for its first two statistics. Finally, the numerical simulations for a two-time-scale longitudinal dynamics of the F-8 jet aircraft demonstrate that the proposed control paradigm has competitive performance in the closed-loop system responses and offers multiple levels of robustness for the system performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Optimization Theory & Applications is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ROBUST control KW - STOCHASTIC analysis KW - GAUSSIAN distribution KW - ANALYSIS of covariance KW - BROWNIAN motion processes KW - H2 control KW - Mayer form optimization KW - Multiobjective cumulant-based control KW - Risk-averse controllers KW - Two-time-scale stochastic system N1 - Accession Number: 53053544; Pham, K. D. 1; Email Address: pham.dai.khanh@gmail.com; Affiliation: 1: Aerospace Engineer, Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117 USA; Source Info: Aug2010, Vol. 146 Issue 2, p511; Subject Term: ROBUST control; Subject Term: STOCHASTIC analysis; Subject Term: GAUSSIAN distribution; Subject Term: ANALYSIS of covariance; Subject Term: BROWNIAN motion processes; Subject Term: H2 control; Author-Supplied Keyword: Mayer form optimization; Author-Supplied Keyword: Multiobjective cumulant-based control; Author-Supplied Keyword: Risk-averse controllers; Author-Supplied Keyword: Two-time-scale stochastic system; Number of Pages: 27p; Illustrations: 1 Color Photograph, 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1007/s10957-009-9629-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53053544&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tiley, J. AU - Shiveley, K. AU - Viswanathan, G.B. AU - Crouse, C.A. AU - Shiveley, A. T1 - Novel automatic electrochemical–mechanical polishing (ECMP) of metals for scanning electron microscopy JO - Micron JF - Micron Y1 - 2010/08// VL - 41 IS - 6 M3 - Article SP - 615 EP - 621 SN - 09684328 AB - Abstract: A low-stress automated polishing device was developed for preparing titanium and nickel alloys for scanning electron microscopy imaging. The system used pulsed electrochemical reactions within an alkaline electrolyte to generate a thin passivation layer on the surface of the sample, which was removed by the mechanical vibration of the system. The passivation layer development and removal were documented for Ti–6Al–4V and IN718 samples subjected to varying electrical potential cycles and polishing times. Results indicated that the applied cyclic potentials removed material faster than typical removal techniques. In addition, electron back scatter diffraction data showed a decrease in subsurface damage using the developed electrochemical–mechanical process compared to standard mechanical polishing techniques. [Copyright &y& Elsevier] AB - Copyright of Micron is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Pickling KW - SCANNING electron microscopy KW - TITANIUM alloys KW - ELECTROLYTES KW - PASSIVITY (Chemistry) KW - ELECTRONS -- Backscattering KW - EBSD KW - Electro-mechanical polishing KW - Electron microscopy imaging KW - Titanium polishing N1 - Accession Number: 51435553; Tiley, J. 1; Email Address: jaimie.tiley@wpafb.af.mil Shiveley, K. 2 Viswanathan, G.B. 2 Crouse, C.A. 1 Shiveley, A. 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing, Wright-Patterson AFB, OH 45433, United States 2: UES Inc., Wright-Patterson AFB, OH 45433, United States 3: Universal Technology Corporation, Wright-Patterson AFB, OH 45433, United States; Source Info: Aug2010, Vol. 41 Issue 6, p615; Subject Term: METALS -- Pickling; Subject Term: SCANNING electron microscopy; Subject Term: TITANIUM alloys; Subject Term: ELECTROLYTES; Subject Term: PASSIVITY (Chemistry); Subject Term: ELECTRONS -- Backscattering; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: Electro-mechanical polishing; Author-Supplied Keyword: Electron microscopy imaging; Author-Supplied Keyword: Titanium polishing; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332813 Electroplating, Plating, Polishing, Anodizing, and Coloring; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.micron.2010.03.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51435553&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tiley, J.S. AU - Viswanathan, G.B. AU - Shiveley, A. AU - Tschopp, M. AU - Srinivasan, R. AU - Banerjee, R. AU - Fraser, H.L. T1 - Measurement of γ′ precipitates in a nickel-based superalloy using energy-filtered transmission electron microscopy coupled with automated segmenting techniques JO - Micron JF - Micron Y1 - 2010/08// VL - 41 IS - 6 M3 - Article SP - 641 EP - 647 SN - 09684328 AB - Abstract: Precipitates of the ordered L12 γ′ phase (dispersed in the face-centered cubic or FCC γ matrix) were imaged in Rene 88 DT, a commercial multicomponent Ni-based superalloy, using energy-filtered transmission electron microscopy (EFTEM). Imaging was performed using the Cr, Co, Ni, Ti and Al elemental L-absorption edges in the energy loss spectrum. Manual and automated segmentation procedures were utilized for identification of precipitate boundaries and measurement of precipitate sizes. The automated region growing technique for precipitate identification in images was determined to measure accurately precipitate diameters. In addition, the region growing technique provided a repeatable method for optimizing segmentation techniques for varying EFTEM conditions. [Copyright &y& Elsevier] AB - Copyright of Micron is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT resistant alloys KW - TRANSMISSION electron microscopy KW - IMAGE processing KW - ELECTRON energy loss spectroscopy KW - ELECTRON precipitation KW - NICKEL alloys KW - METALLIC composites KW - Energy-filtered TEM KW - Nickel alloys KW - Segmentation procedures N1 - Accession Number: 51435556; Tiley, J.S. 1; Email Address: jaimie.tiley@wpafb.af.mil Viswanathan, G.B. 1 Shiveley, A. 1 Tschopp, M. 1,2 Srinivasan, R. 3 Banerjee, R. 4 Fraser, H.L. 3; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH 45433, USA 2: Center for Advanced Vehicular Systems, Mississippi State University, Starkville, MS 39762, USA 3: Center for the Accelerated Maturation of Materials, Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA 4: Center for Advanced Research and Technology, Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203, USA; Source Info: Aug2010, Vol. 41 Issue 6, p641; Subject Term: HEAT resistant alloys; Subject Term: TRANSMISSION electron microscopy; Subject Term: IMAGE processing; Subject Term: ELECTRON energy loss spectroscopy; Subject Term: ELECTRON precipitation; Subject Term: NICKEL alloys; Subject Term: METALLIC composites; Author-Supplied Keyword: Energy-filtered TEM; Author-Supplied Keyword: Nickel alloys; Author-Supplied Keyword: Segmentation procedures; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 812922 One-Hour Photofinishing; NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.micron.2010.03.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51435556&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Soref, Richard T1 - Mid-infrared photonics in silicon and germanium. JO - Nature Photonics JF - Nature Photonics Y1 - 2010/08// VL - 4 IS - 8 M3 - Article SP - 495 EP - 497 SN - 17494885 AB - The article presents a discussion on silicon photonics or group IV photonics and suggests future research areas in it. It states that silicon (Si) photonics involves optoelectronic devices made up of germanium and silicon, and includes long- and mid-infrared (IR) regions. It discusses several aspects of mid-IR Si photonics which can be topics of further research, including chemical and biological sensing, CMOS optoelectronic integrated circuits, and monolithic lasers and amplifiers. KW - PHOTONICS KW - INFRARED radiation KW - SILICON KW - GERMANIUM KW - OPTOELECTRONIC devices KW - INTEGRATED circuits N1 - Accession Number: 52556322; Soref, Richard 1; Email Address: richard.soref@hanscom.af.mil; Affiliation: 1: Sensors Directorate of the Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731, USA.; Source Info: Aug2010, Vol. 4 Issue 8, p495; Subject Term: PHOTONICS; Subject Term: INFRARED radiation; Subject Term: SILICON; Subject Term: GERMANIUM; Subject Term: OPTOELECTRONIC devices; Subject Term: INTEGRATED circuits; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 3p; Illustrations: 1 Color Photograph, 1 Graph; Document Type: Article L3 - 10.1038/nphoton.2010.171 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52556322&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fulcher, J.T. AU - Lu, Y.C. AU - Tandon, G.P. AU - Foster, D.C. T1 - Thermomechanical characterization of shape memory polymers using high temperature nanoindentation JO - Polymer Testing JF - Polymer Testing Y1 - 2010/08// VL - 29 IS - 5 M3 - Article SP - 544 EP - 552 SN - 01429418 AB - Abstract: This paper investigates the thermomechanical behavior of a thermosetting shape memory polymer (SMP) by using a high temperature nanoindentation technique. The nanoindenter is equipped with a microheater and a sophisticated temperature control and monitoring system. This allows the SMP to be activated at elevated temperatures enabling proper implementation of the thermomechanical cycle typically used to quantify the shape memory behavior. The load–depth curves of the SMP were obtained at various temperatures, from which the instantaneous moduli were calculated with a revised indenter-sample contact depth formula. The moduli from nanoindentation are consistent with those obtained from dynamic mechanical analysis on bulk samples. When activated at elevated temperatures, the SMP exhibits surface profiles different from those obtained when activated at room temperature. A large amount of “sink-in” is observed at the SMP surface when activated at temperatures above its glass transition temperature (T g). It is seen that the large-strain elastic deformation is almost fully recoverable when recovery takes place at a recovery temperature, T r > T g. [Copyright &y& Elsevier] AB - Copyright of Polymer Testing is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS -- Thermal properties KW - POLYMERS -- Mechanical properties KW - SHAPE memory effect KW - INDENTATION (Materials science) KW - NANOTECHNOLOGY KW - TEMPERATURE control KW - DEFORMATIONS (Mechanics) KW - GLASS transition temperature KW - High temperature nanoindentation KW - Shape memory polymer KW - Shape recovery KW - Thermomechanical characterization N1 - Accession Number: 51401830; Fulcher, J.T. 1 Lu, Y.C. 1; Email Address: chlu@engr.uky.edu Tandon, G.P. 2,3 Foster, D.C. 2; Affiliation: 1: University of Kentucky, Lexington, KY 40506, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXBC, Wright-Patterson AFB, OH 45433, USA 3: University of Dayton Research Ins., 300 College Park, Dayton, OH 45469-0060, USA; Source Info: Aug2010, Vol. 29 Issue 5, p544; Subject Term: POLYMERS -- Thermal properties; Subject Term: POLYMERS -- Mechanical properties; Subject Term: SHAPE memory effect; Subject Term: INDENTATION (Materials science); Subject Term: NANOTECHNOLOGY; Subject Term: TEMPERATURE control; Subject Term: DEFORMATIONS (Mechanics); Subject Term: GLASS transition temperature; Author-Supplied Keyword: High temperature nanoindentation; Author-Supplied Keyword: Shape memory polymer; Author-Supplied Keyword: Shape recovery; Author-Supplied Keyword: Thermomechanical characterization; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.polymertesting.2010.02.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51401830&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Braydich-Stolle, Laura K. AU - Lucas, Benjamin AU - Schrand, Amanda AU - Murdock, Richard C. AU - Lee, Timothy AU - Schlager, John J. AU - Hussain, Saber M. AU - Hofmann, Marie-Claude T1 - Silver Nanoparticles Disrupt GDNF/Fyn kinase Signaling in Spermatogonial Stem Cells. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 2010/08// VL - 116 IS - 2 M3 - Article SP - 577 EP - 589 SN - 10966080 AB - Silver nanoparticles (Ag-NPs) are being utilized in an increasing number of fields and are components of antibacterial coatings, antistatic materials, superconductors, and biosensors. A number of reports have now described the toxic effects of silver nanoparticles on somatic cells; however, no study has examined their effects on the germ line at the molecular level. Spermatogenesis is a complex biological process that is particularly sensitive to environmental insults. Many chemicals, including ultrafine particles, have a negative effect on the germ line, either by directly affecting the germ cells or by indirectly acting on the somatic cells of the testis. In the present study, we have assessed the impact of different doses of Ag-NPs, as well as their size and biocompatible coating, on the proliferation of mouse spermatogonial stem cells (SSCs), which are at the origin of the germ line in the adult testis. At concentrations ≥ 10 μg/ml, Ag-NPs induced a significant decline in SSCs proliferation, which was also dependent on their size and coating. At the concentration of 10 μg/ml, reactive oxygen species production and/or apoptosis did not seem to play a major role; therefore, we explored other mechanisms to explain the decrease in cell proliferation. Because glial cell line–derived neurotrophic factor (GDNF) is vital for SSC self-renewal in vitro and in vivo, we evaluated the effects of Ag-NPs on GDNF-mediated signaling in these cells. Although the nanoparticles did not reduce GDNF binding or Ret receptor activity, our data revealed that already at a concentration of 10 μg/ml, silver nanoparticles specifically interact with Fyn kinase downstream of Ret and impair SSC proliferation in vitro. In addition, we demonstrated that the particle coating was degraded upon interaction with the intracellular microenvironment, reducing biocompatibility. [ABSTRACT FROM PUBLISHER] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILVER -- Physiological effect KW - NANOPARTICLES -- Physiological effect KW - SPERMATOGENESIS KW - SURFACE coatings KW - STEM cells KW - ANTIBODY diversity KW - GERM cells KW - SOMATIC cells KW - cell signaling KW - Fyn kinase KW - nanoparticle-protein interactions KW - silver nanoparticles KW - spermatogonial stem cells N1 - Accession Number: 52348605; Braydich-Stolle, Laura K. 1 Lucas, Benjamin 2 Schrand, Amanda 1 Murdock, Richard C. 1 Lee, Timothy 2 Schlager, John J. 1 Hussain, Saber M. 1 Hofmann, Marie-Claude 2,3; Email Address: mhofmann@illinois.edu; Affiliation: 1: Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force Research Laboratory/RHPB, Wright-Patterson Air Force Base, Dayton, Ohio 45433 2: Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, Urbana, Illinois 61802 3: Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61802; Source Info: Aug2010, Vol. 116 Issue 2, p577; Subject Term: SILVER -- Physiological effect; Subject Term: NANOPARTICLES -- Physiological effect; Subject Term: SPERMATOGENESIS; Subject Term: SURFACE coatings; Subject Term: STEM cells; Subject Term: ANTIBODY diversity; Subject Term: GERM cells; Subject Term: SOMATIC cells; Author-Supplied Keyword: cell signaling; Author-Supplied Keyword: Fyn kinase; Author-Supplied Keyword: nanoparticle-protein interactions; Author-Supplied Keyword: silver nanoparticles; Author-Supplied Keyword: spermatogonial stem cells; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 13p; Illustrations: 1 Color Photograph, 2 Black and White Photographs, 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1093/toxsci/kfq148 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52348605&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rai, A. AU - Trivedi, H. AU - Bhattacharya, R. AU - Klenke, C. AU - Forster, N. T1 - An Approach to Evaluate the Abrasive Land Wear of High-Speed Bearings. JO - Tribology Letters JF - Tribology Letters Y1 - 2010/08// VL - 39 IS - 2 M3 - Article SP - 143 EP - 149 SN - 10238883 AB - State-of-the-art bearing materials, such as Pyrowear 675(P675) have been developed to meet the requirements of the next generation of gas turbine engines. P675 bearings have exhibited higher land wear compared to conventional M50 bearings under contaminated test conditions. Surface modification techniques can be applied to enhance the wear resistance of bearing land surfaces. A coating has been developed to minimize abrasive wear of land surfaces. A new procedure using a 40 mm bearing test rig has been developed to effectively evaluate land wear under simulated contaminated condition. Test conditions including contamination concentration, test duration, test temperature and lubricant flow rate were optimized to obtain measureable wear on the land surfaces in a reasonable test time. Results obtained using M50 Nil, P675 and M50 bearings are presented to illustrate the viability of the test procedure. [ABSTRACT FROM AUTHOR] AB - Copyright of Tribology Letters is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MECHANICAL wear KW - BEARINGS (Machinery) KW - GAS turbines KW - ROLLING (Metalwork) KW - SURFACE coatings KW - TEMPERATURE effect KW - Coatings KW - Gas turbines KW - Gas/Jet turbines KW - Rolling element bearings KW - Wear KW - Wear resistant N1 - Accession Number: 52288747; Rai, A. 1; Email Address: arai@ues.com Trivedi, H. 1 Bhattacharya, R. 1 Klenke, C. 2 Forster, N. 2; Affiliation: 1: UES Inc., 4401 Dayton-Xenia Road Dayton 45432 USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base Dayton 45433 USA; Source Info: Aug2010, Vol. 39 Issue 2, p143; Subject Term: MECHANICAL wear; Subject Term: BEARINGS (Machinery); Subject Term: GAS turbines; Subject Term: ROLLING (Metalwork); Subject Term: SURFACE coatings; Subject Term: TEMPERATURE effect; Author-Supplied Keyword: Coatings; Author-Supplied Keyword: Gas turbines; Author-Supplied Keyword: Gas/Jet turbines; Author-Supplied Keyword: Rolling element bearings; Author-Supplied Keyword: Wear; Author-Supplied Keyword: Wear resistant; NAICS/Industry Codes: 423840 Industrial Supplies Merchant Wholesalers; NAICS/Industry Codes: 332991 Ball and Roller Bearing Manufacturing; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; NAICS/Industry Codes: 331410 Nonferrous Metal (except Aluminum) Smelting and Refining; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331491 Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331315 Aluminum Sheet, Plate, and Foil Manufacturing; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331221 Rolled Steel Shape Manufacturing; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1007/s11249-010-9627-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52288747&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Park, Chan Hee AU - Lee, Byounggab AU - Semiatin, S.L. AU - Lee, Chong Soo T1 - Low-temperature superplasticity and coarsening behavior of Ti–6Al–2Sn–4Zr–2Mo–0.1Si JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2010/07/25/ VL - 527 IS - 20 M3 - Article SP - 5203 EP - 5211 SN - 09215093 AB - Abstract: The low-temperature superplasticity and dynamic coarsening behavior of Ti–6Al–2Sn–4Zr–2Mo–0.1Si were established and interpreted in the context of inelastic-deformation theory. The starting microstructure with an equiaxed-alpha particle size of 13μm was refined to 2.2μm by a treatment comprising beta annealing/water quenching followed by warm rolling at 775°C. A series of tension and load-relaxation tests were carried out for the coarse and fine microstructures at strain rates of 10−4 to 10−2 s−1 in the temperature range of 650–750°C. The fine microstructure exhibited enhanced superplasticity (382–826% elongation) compared to that of the coarse microstructure (189–286% elongation); this trend was attributed to a larger fraction of boundary sliding and lower friction stress for the finer material. With respect to microstructure evolution, the coarsening rate of the alpha particles during deformation was ∼12 times faster than that during static coarsening. Furthermore, both the static and dynamic coarsening rates for the Ti–6Al–2Sn–4Zr–2Mo–0.1Si were 2.7–4.7 times lower than those for the Ti–6Al–4V, a trend attributable to the lower diffusivity of Mo compared to that of V at a given test temperature. The plastic flow behavior of the coarse and fine microstructures was rationalized in terms of microstructure evolution during deformation. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERPLASTICITY KW - LOW temperatures KW - OSTWALD ripening KW - TITANIUM alloys KW - DEFORMATIONS (Mechanics) KW - MICROSTRUCTURE KW - ALPHA rays KW - TEMPERATURE effect KW - STRAINS & stresses (Mechanics) KW - Coarsening KW - Deformation mechanism KW - Dynamic globularization KW - Superplasticity KW - Titanium alloy N1 - Accession Number: 51811313; Park, Chan Hee 1 Lee, Byounggab 1 Semiatin, S.L. 2 Lee, Chong Soo 1; Email Address: cslee@postech.ac.kr; Affiliation: 1: Department of Materials Science and Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, Nam-gu, Pohang, Gyungbuk 790-784, Republic of Korea 2: Air Force Research Laboratory, AFRL/RXLM, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Jul2010, Vol. 527 Issue 20, p5203; Subject Term: SUPERPLASTICITY; Subject Term: LOW temperatures; Subject Term: OSTWALD ripening; Subject Term: TITANIUM alloys; Subject Term: DEFORMATIONS (Mechanics); Subject Term: MICROSTRUCTURE; Subject Term: ALPHA rays; Subject Term: TEMPERATURE effect; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: Coarsening; Author-Supplied Keyword: Deformation mechanism; Author-Supplied Keyword: Dynamic globularization; Author-Supplied Keyword: Superplasticity; Author-Supplied Keyword: Titanium alloy; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.msea.2010.04.082 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51811313&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nicole Eyet AU - A. A. Viggiano T1 - Reexamination of the Quenching of NO+Vibrations by O2(a1Δg). JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2010/07/22/ VL - 114 IS - 28 M3 - Article SP - 7506 EP - 7508 SN - 10895639 AB - The quenching of vibrationally excited NO+by O2(a1Δg) has been examined using the monitor ion technique and chemical generation of O2(a1Δg). In contrast to previous results which showed that the rate constant was much larger than for ground state O2, this study finds that the rate constant for quenching is below the detection limit (<10−11cm3s−1) of this experiment. The previous experiments produced O2(a1Δg) in a discharge, which would also produces O atoms. We found that the monitor ion CH3I+reacts with O atoms to produce CHIOH+. This is the likely cause of error in the previous experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR dynamics KW - NITROGEN oxides KW - IONS KW - CHEMICAL kinetics KW - ELECTRIC discharges KW - EXCITED state chemistry N1 - Accession Number: 52381846; Nicole Eyet 1 A. A. Viggiano 1; Affiliation: 1: Department of Chemistry, Saint Anselm College, 100 Saint Anselm Drive, Manchester, New Hampshire 03102, USA, Space Vehicles Directorate, Air Force Research Laboratory, 29 Randolph Road, Hanscom Air Force Base, Massachusetts 01731-3010, USA, and Institute for Scientific Research, Boston College; Source Info: Jul2010, Vol. 114 Issue 28, p7506; Subject Term: MOLECULAR dynamics; Subject Term: NITROGEN oxides; Subject Term: IONS; Subject Term: CHEMICAL kinetics; Subject Term: ELECTRIC discharges; Subject Term: EXCITED state chemistry; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52381846&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jianzhong Chen AU - Shiyanov, Pavel AU - Liwen Zhang AU - Schlager, John J. AU - Green-Church, Kari B. T1 - Top-Down Characterization of a Native Highly Intralinked Protein: Concurrent Cleavages of Disulfide and Protein Backbone Bonds. JO - Analytical Chemistry JF - Analytical Chemistry Y1 - 2010/07/15/ VL - 82 IS - 14 M3 - Article SP - 6079 EP - 6089 SN - 00032700 AB - Top-down analysis of proteins has developed rapidly in recent years. However, its application to disulfide-bonded proteins is still limited. Using native chicken lysozyme as a model, we studied the characteristics of collision-induced dissociation (CID) of disulfide-bonded proteins on an LTQ Orbitrap mass spectrometer with electrospray ionization (ESI) in positive mode. For low-charged protein precursor ions with no or limited mobile protons, product ions generated from CID correspond to the concurrent cleavages of disulfide and protein backbone bonds. Up to three disulfide bonds could be easily cleaved with four possible dissociation pathways for each disulfide bond. That led to modifications of the corresponding cysteine residues through addition or subtraction of a hydrogen atom or sulfhydryl group. The protein backbone cleavages mainly occurred at the amide bonds from C-terminal to aspartic acid residues (e.g., ion series of b18, b48, y10, and y28), N-Cα bonds from N-terminal to cysteine residues (e.g., c5, ion series of c29 and c63), and amide bonds from C-terminal to glutamic acid residues (e.g., ion series of b35). The characteristics of the top-down analysis for this highly knotted protein will help to understand the general dissociation pattern of disulfide-bonded proteins, which in turn will help to avoid time-consuming bottom-up procedures for the identification of proteins and their modifications. [ABSTRACT FROM AUTHOR] AB - Copyright of Analytical Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTEINS -- Analysis KW - CHEMICAL bonds KW - CHEMICAL reactions KW - HYDROGEN bonding KW - ANALYTICAL chemistry KW - ELECTROSPRAY ionization mass spectrometry N1 - Accession Number: 52498144; Jianzhong Chen 1,2; Email Address: jianzhongc@yahoo.com Shiyanov, Pavel 1 Liwen Zhang 2 Schlager, John J. 1 Green-Church, Kari B. 2; Affiliation: 1: Applied Biotechnology Branch, Air Force Research Laboratory, Dayton, Ohio 45433 2: Mass Spectrometry and Proteomics Facility, The Ohio State University, Columbus, Ohio 43210; Source Info: 7/15/2010, Vol. 82 Issue 14, p6079; Subject Term: PROTEINS -- Analysis; Subject Term: CHEMICAL bonds; Subject Term: CHEMICAL reactions; Subject Term: HYDROGEN bonding; Subject Term: ANALYTICAL chemistry; Subject Term: ELECTROSPRAY ionization mass spectrometry; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52498144&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ullrich, B. AU - Xiao, X. Y. AU - Brown, G. J. T1 - Photoluminescence of PbS quantum dots on semi-insulating GaAs. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/07/15/ VL - 108 IS - 1 M3 - Article SP - 013525 PB - American Institute of Physics SN - 00218979 AB - We studied the emission properties of colloidal PbS quantum dots (QDs) (5.3 nm) dispersed on semi-insulating GaAs in the temperature range of 5–300 K by employing Fourier transform infrared photoluminescence spectroscopy. The results reveal that the PbS QDs alter and notably enhance the emission features of the GaAs substrate itself. The dependence of the QD emission peak position on temperature is modeled equivalently well with the well-known empirical Varshni equation and with a relation based on thermodynamics. The work reveals that emission properties of PbS QDs do not follow predictably general rules but are determined sensitively by the preparation method and substrate used. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM dots KW - PHOTOLUMINESCENCE KW - LEAD KW - SULFUR KW - GALLIUM arsenide N1 - Accession Number: 52235279; Ullrich, B. 1,2; Email Address: bruno.ullrich@yahoo.com Xiao, X. Y. 1 Brown, G. J. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright Patterson AFB, Ohio 45433-7707, USA 2: Department of Physics and Astronomy, Centers for Materials and Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403-0209, USA; Source Info: Jul2010, Vol. 108 Issue 1, p013525; Subject Term: QUANTUM dots; Subject Term: PHOTOLUMINESCENCE; Subject Term: LEAD; Subject Term: SULFUR; Subject Term: GALLIUM arsenide; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 325320 Pesticide and Other Agricultural Chemical Manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 5p; Illustrations: 1 Diagram, 3 Charts, 7 Graphs; Document Type: Article L3 - 10.1063/1.3460150 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52235279&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fagnard, J. F. AU - Dirickx, M. AU - Levin, G. A. AU - Barnes, P. N. AU - Vanderheyden, B. AU - Vanderbemden, P. T1 - Use of second generation coated conductors for efficient shielding of dc magnetic fields. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/07/15/ VL - 108 IS - 1 M3 - Article SP - 013910 PB - American Institute of Physics SN - 00218979 AB - This paper reports the results of an experimental investigation of the performance of two types of magnetic screens assembled from YBa2Cu3O7-δ (YBCO) coated conductors. Since effective screening of the axial dc magnetic field requires the unimpeded flow of an azimuthal persistent current, we demonstrate a configuration of a screening shell made out of standard YBCO coated conductor capable to accomplish that. The screen allows the persistent current to flow in the predominantly azimuthal direction at a temperature of 77 K. The persistent screen, incorporating a single layer of superconducting film, can attenuate an external magnetic field of up to 5 mT by more than an order of magnitude. For comparison purposes, another type of screen which incorporates low critical temperature quasipersistent joints was also built. The shielding technique we describe here appears to be especially promising for the realization of large scale high-Tc superconducting screens. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC fields KW - MAGNETIC shielding KW - ELECTRIC conductors KW - MAGNETISM KW - GEOMAGNETISM N1 - Accession Number: 52235285; Fagnard, J. F. 1; Email Address: fagnard@montefiore.ulg.ac.be Dirickx, M. 1 Levin, G. A. 2 Barnes, P. N. 2 Vanderheyden, B. 3 Vanderbemden, P. 3; Affiliation: 1: SUPRATECS, CISS Department, Royal Military Academy, B-1000 Brussels, Belgium 2: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 3: SUPRATECS, Department of Electrical Engineering and Computer Science, University of Liège, B-4000 Liège, Belgium; Source Info: Jul2010, Vol. 108 Issue 1, p013910; Subject Term: MAGNETIC fields; Subject Term: MAGNETIC shielding; Subject Term: ELECTRIC conductors; Subject Term: MAGNETISM; Subject Term: GEOMAGNETISM; Number of Pages: 4p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.3459895 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52235285&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Natarajan, Lalgudi V. AU - White, Timothy J. AU - Wofford, Jeremy M. AU - Tondiglia, Vincent P. AU - Sutherland, Richard L. AU - Siwecki, Stephen A. AU - Bunning, Timothy J. T1 - Laser initiated thermal tuning of a cholesteric liquid crystal. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/07/05/ VL - 97 IS - 1 M3 - Article SP - 011107 PB - American Institute of Physics SN - 00036951 AB - We report on the large wavelength range and light-initiated thermal tuning of the reflection of a liquid crystal (LC) formulation (S811/ZLI-2806) near a smectic (SmA) to cholesteric (CLC) phase transition enabled by the use of a high order parameter heat transfer dye (anthraquinone, AQ). Upon irradiation with a 647 nm Krypton ion (Kr+) laser line, absorption by AQ generates heat that is transferred to the surrounding LC host. In the S811/ZLI-2806 formulation examined here, the optically generated increase in temperature serves to transition the phase from SmA to CLC. As has been documented, the SmA→CLC transition is typified by a pitch contraction that blueshifts the position of the CLC reflection, in this case a shift from 2500 to 700 nm that can occur in less than 100 s. The tuning range and speed are dependent on the laser power and the amount of dye in the cell. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - LASERS KW - IRRADIATION KW - ANTHRAQUINONES KW - HEAT transfer KW - KRYPTON KW - INFRARED imaging N1 - Accession Number: 52060151; Natarajan, Lalgudi V. 1,2 White, Timothy J. 1 Wofford, Jeremy M. 1 Tondiglia, Vincent P. 1,2 Sutherland, Richard L. 1,2 Siwecki, Stephen A. 1,2 Bunning, Timothy J. 1; Email Address: timothy.bunning@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: Science Applications International Corporation, Dayton, Ohio 45431, USA; Source Info: 7/5/2010, Vol. 97 Issue 1, p011107; Subject Term: LIQUID crystals; Subject Term: LASERS; Subject Term: IRRADIATION; Subject Term: ANTHRAQUINONES; Subject Term: HEAT transfer; Subject Term: KRYPTON; Subject Term: INFRARED imaging; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.3459957 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52060151&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Idesman, A.V. AU - Subramanian, K. AU - Schmidt, M. AU - Foley, J.R. AU - Tu, Y. AU - Sierakowski, R.L. T1 - Finite element simulation of wave propagation in an axisymmetric bar JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2010/07/05/ VL - 329 IS - 14 M3 - Article SP - 2851 EP - 2872 SN - 0022460X AB - Abstract: An accurate solution for high-frequency pulse propagation in an axisymmetric elastic bar is obtained using a new finite element technique that yields accurate non-oscillatory solutions for wave propagation problems in solids. The solution of the problem is very important for the understanding of dynamics experiments in the split Hopkinson pressure bar (SHPB). In contrast to known approaches, no additional assumptions are necessary for the accurate solution of the considered problem. The new solution helps to elucidate the complicated distribution of parameters during high-frequency pulse propagation down the bar as well as to estimate the applicability of the traditional dispersion correction used in the literature for the analysis of wave propagation in a finite bar. Due to the dimensionless formulation of the problem, the numerical results obtained depend on Poisson''s ratio, the length of the bar and the pulse frequency, and are independent of Young''s modulus, the density and the radius of the bar. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FINITE element method KW - SIMULATION methods & models KW - RADIO wave propagation KW - AXIAL flow KW - WAVES (Physics) KW - PRESSURE KW - DISPERSION KW - POISSON processes KW - ELASTICITY N1 - Accession Number: 48599530; Idesman, A.V. 1; Email Address: alexander.idesman@coe.ttu.edu Subramanian, K. 1 Schmidt, M. 2 Foley, J.R. 2 Tu, Y. 2 Sierakowski, R.L. 2; Affiliation: 1: Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409-1021, USA 2: Air Force Research Laboratory, Munitions Directorate, Eglin Air Force Base, FL 32542, USA; Source Info: Jul2010, Vol. 329 Issue 14, p2851; Subject Term: FINITE element method; Subject Term: SIMULATION methods & models; Subject Term: RADIO wave propagation; Subject Term: AXIAL flow; Subject Term: WAVES (Physics); Subject Term: PRESSURE; Subject Term: DISPERSION; Subject Term: POISSON processes; Subject Term: ELASTICITY; Number of Pages: 22p; Document Type: Article L3 - 10.1016/j.jsv.2010.01.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48599530&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shumelyuk, A. AU - Volkov, A. AU - Odoulov, S. AU - Cook, G. AU - Evans, D. R. T1 - Coupling of counterpropagating light waves in low-symmetry photorefractive crystals. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2010/07// VL - 100 IS - 1 M3 - Article SP - 101 EP - 108 PB - Springer Science & Business Media B.V. SN - 09462171 AB - Coupling of two counterpropagating coherent light waves in tin hypothiodiphosphate (Sn2P2S6, SPS) is usually strongly inhibited because of severe space charge limitations. Analysis of two-beam coupling gain is performed for different orientations of the grating vector in this monoclinic crystal that takes into account the anisotropy of dielectric permittivity. Gain enhancements are predicted and demonstrated experimentally for several nontraditional orientations of counterpropagating waves. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOREFRACTIVE materials KW - CRYSTALS KW - CRYSTALLOGRAPHY KW - MATTER -- Properties KW - ANISOTROPY N1 - Accession Number: 52471169; Shumelyuk, A. 1 Volkov, A. 1 Odoulov, S. 1; Email Address: odoulov@iop.kiev.ua Cook, G. 2,3 Evans, D. R. 2; Affiliation: 1: Institute of Physics, National Academy of Sciences, 46, Science Ave, 03 650 Kyiv, Ukraine. 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA. 3: Azimuth Corporation, 4134 Linden Avenue, Suite 300, Dayton, OH, USA.; Source Info: Jul2010, Vol. 100 Issue 1, p101; Subject Term: PHOTOREFRACTIVE materials; Subject Term: CRYSTALS; Subject Term: CRYSTALLOGRAPHY; Subject Term: MATTER -- Properties; Subject Term: ANISOTROPY; Number of Pages: 8p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1007/s00340-010-3998-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52471169&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Weber, E. AU - Fernandez, M. AU - Wapner, P. AU - Hoffman, W. T1 - Comparison of X-ray micro-tomography measurements of densities and porosity principally to values measured by mercury porosimetry for carbon–carbon composites JO - Carbon JF - Carbon Y1 - 2010/07// VL - 48 IS - 8 M3 - Article SP - 2151 EP - 2158 SN - 00086223 AB - Abstract: X-ray Micro-Tomography (μCT) applied to carbon–carbon composites is shown to be able to quantify the amount, shape, and distribution in three dimensions of both open and closed porosity with a minimum dimension greater than 10μm. Being a non-destructive technique, it is also able to track these values following each densification cycle. It is also demonstrated that μCT is able to obtain bulk density values for non-uniform samples as well as the same results for skeletal density as other techniques used conventionally. Furthermore, values for open porosity comparable to those obtained by mercury porosimetry can be obtained by X-ray Micro-Tomography if the value obtained by the mercury porosimeter is truncated below the resolution of the μCT. Finally, it is shown that in conjunction with data from the mercury porosimetry, μCT is also able to demonstrate the presence of “bottle-neck” pores i.e. open pores with restricted pore access dimensions. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON composites KW - POROSITY KW - MERCURY KW - COMPARATIVE studies KW - TOMOGRAPHY KW - DENSITY KW - X-rays N1 - Accession Number: 50259294; Weber, E. 1 Fernandez, M. 1 Wapner, P. 2 Hoffman, W. 1; Email Address: wesley.hoffman@us.af.mil; Affiliation: 1: Air Force Research Laboratory, 10 E. Saturn Blvd., Edwards AFB, CA 93524, United States 2: ERC, Inc, 10 E. Saturn Blvd., Edwards AFB, CA 93524, United States; Source Info: Jul2010, Vol. 48 Issue 8, p2151; Subject Term: CARBON composites; Subject Term: POROSITY; Subject Term: MERCURY; Subject Term: COMPARATIVE studies; Subject Term: TOMOGRAPHY; Subject Term: DENSITY; Subject Term: X-rays; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.carbon.2009.11.047 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50259294&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Berzins, David W. AU - Roberts, Howard W. T1 - Phase transformation changes in thermocycled nickel–titanium orthodontic wires JO - Dental Materials JF - Dental Materials Y1 - 2010/07// VL - 26 IS - 7 M3 - Article SP - 666 EP - 674 SN - 01095641 AB - Abstract: Objective: In the oral environment, orthodontic wires will be subject to thermal fluctuations. The purpose of this study was to investigate the effect of thermocycling on nickel–titanium (NiTi) wire phase transformations. Methods: Straight segments from single 27 and 35°C copper NiTi (Ormco), Sentalloy (GAC), and Nitinol Heat Activated (3M Unitek) archwires were sectioned into 5mm segments (n =20). A control group consisted of five randomly selected non-thermocycled segments. The remaining segments were thermocycled between 5 and 55°C with five randomly selected segments analyzed with differential scanning calorimetry (DSC; −100↔150°C at 10°C/min) after 1000, 5000, and 10,000 cycles. Thermal peaks were evaluated with results analyzed via ANOVA (α =0.05). Results: Nitinol HA and Sentalloy did not demonstrate qualitative or quantitative phase transformation behavior differences. Significant differences were observed in some of the copper NiTi transformation temperatures, as well as the heating enthalpy with the 27°C copper NiTi wires (p <0.05). Qualitatively, with increased thermocycling the extent of R-phase in the heating peaks decreased in the 35°C copper NiTi, and an austenite to martensite peak shoulder developed during cooling in the 27°C copper NiTi. Significance: Repeated temperature fluctuations may contribute to qualitative and quantitative phase transformation changes in some NiTi wires. [Copyright &y& Elsevier] AB - Copyright of Dental Materials is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHASE transformations (Physics) KW - NICKEL-titanium alloys KW - ENTHALPY KW - ORTHODONTIC appliances KW - TEMPERATURE effect KW - MARTENSITE KW - AUSTENITE KW - DENTAL metallurgy KW - Differential scanning calorimetry KW - Nickel–titanium KW - Orthodontic wires KW - Phase transformations KW - Thermocycling N1 - Accession Number: 51149645; Berzins, David W. 1; Email Address: david.berzins@marquette.edu Roberts, Howard W. 2; Affiliation: 1: Dental Biomaterials, School of Dentistry, Marquette University, 113A Wehr Physics Building, P.O. Box 1881, Milwaukee, WI 53201, USA 2: United States Air Force Dental Evaluation and Consultation Service, Great Lakes, IL, USA; Source Info: Jul2010, Vol. 26 Issue 7, p666; Subject Term: PHASE transformations (Physics); Subject Term: NICKEL-titanium alloys; Subject Term: ENTHALPY; Subject Term: ORTHODONTIC appliances; Subject Term: TEMPERATURE effect; Subject Term: MARTENSITE; Subject Term: AUSTENITE; Subject Term: DENTAL metallurgy; Author-Supplied Keyword: Differential scanning calorimetry; Author-Supplied Keyword: Nickel–titanium; Author-Supplied Keyword: Orthodontic wires; Author-Supplied Keyword: Phase transformations; Author-Supplied Keyword: Thermocycling; NAICS/Industry Codes: 339114 Dental Equipment and Supplies Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.dental.2010.03.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51149645&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kovanis, V. AU - Gavrielides, A. AU - Gallas, J. T1 - Labyrinth bifurcations in optically injected diode lasers. JO - European Physical Journal D -- Atoms, Molecules, Clusters & Optical Physics JF - European Physical Journal D -- Atoms, Molecules, Clusters & Optical Physics Y1 - 2010/07// VL - 58 IS - 2 M3 - Article SP - 181 EP - 186 PB - Springer Science & Business Media B.V. SN - 14346060 AB - Although pulsating and chaotic regimes in injection-locked semiconductor lasers have been described often in the literature, so far their relative abundance has remained poorly explored. Here, for two popular laser models, we report detailed Lyapunov phase (stability) diagrams characterizing the extension in parameter space of pulsating phases. Our phase (stability) diagrams discriminate regular from chaotic laser emissions and indicate where multistability is to be expected in injection-locked semiconductor lasers. [ABSTRACT FROM AUTHOR] AB - Copyright of European Physical Journal D -- Atoms, Molecules, Clusters & Optical Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LABYRINTH problems KW - UNSTEADY flow (Fluid dynamics) KW - SEMICONDUCTORS KW - LYAPUNOV stability KW - LASERS N1 - Accession Number: 51088635; Kovanis, V. 1 Gavrielides, A. 2 Gallas, J. 3,4,5; Email Address: jgallas@if.ufrgs.br; Affiliation: 1: Air Force Research Laboratory, 2241 Avionics Circle, Wright-Patterson AFB, Dayton OH 45433, USA 2: USAF, Research Laboratory, High Power Solid State Lasers Branch, Kirtland AFB, NM 87117, USA 3: TecEdge, Wright Brothers Institute, 5100 Springfield Street, Dayton OH 45431, USA 4: Departamento de Física, Universidade Federal da Paraíba, 58051-970 João Pessoa, Brazil 5: Instituto de Física, Universidade Federal do Rio Grande do Sul, 91501-970 Porto Alegre, Brazil; Source Info: Jul2010, Vol. 58 Issue 2, p181; Subject Term: LABYRINTH problems; Subject Term: UNSTEADY flow (Fluid dynamics); Subject Term: SEMICONDUCTORS; Subject Term: LYAPUNOV stability; Subject Term: LASERS; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 6p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1140/epjd/e2010-00061-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51088635&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - BLEAH, DORIS A. AU - ELLETT, MARSHA L. T1 - Infant Crying Among Recent African Immigrants. JO - Health Care for Women International JF - Health Care for Women International Y1 - 2010/07// VL - 31 IS - 7 M3 - Article SP - 652 EP - 663 PB - Routledge SN - 07399332 AB - Studies in non-Western cultures have shown that infants cry very little, probably because they are carried constantly by caregivers. Western literature suggests that the bouts of persistent crying found in infants at least in part result from Western caregiving practices. This study was conducted to describe crying patterns of a small sample (n = 8) of infants born to recent African immigrants to the United States. Audio-recorded interviews were analyzed using content analysis and descriptive statistics. Some infant crying occurred but less than for typical Western babies. Mothers provided reasons why increased crying occurred. Nursing implications of the findings are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Health Care for Women International is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYING in infants KW - AFRICAN American infants KW - CAREGIVERS KW - CHILD care KW - MOTHER & infant KW - UNITED States N1 - Accession Number: 51174498; BLEAH, DORIS A. 1; Email Address: doris.bleah@wpafb.af.mil ELLETT, MARSHA L. 2; Affiliation: 1: United States Air Force, Wright-Patterson Air Force Base, Ohio, USA 2: Indiana University School of Nursing, Indianapolis, Indiana, USA; Source Info: Jul2010, Vol. 31 Issue 7, p652; Subject Term: CRYING in infants; Subject Term: AFRICAN American infants; Subject Term: CAREGIVERS; Subject Term: CHILD care; Subject Term: MOTHER & infant; Subject Term: UNITED States; Number of Pages: 12p; Illustrations: 1 Chart; Document Type: Article L3 - 10.1080/07399331003628446 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51174498&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kaiser, M. K. AU - Gans, N. R. AU - Dixon, W. E. T1 - Vision-Based Estimation for Guidance, Navigation, and Control of an Aerial Vehicle. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2010/07// VL - 46 IS - 3 M3 - Article SP - 1064 EP - 1077 SN - 00189251 AB - While a Global Positioning System (GPS) is the most widely used sensor modality for aircraft navigation, researchers have been motivated to investigate other navigational sensor modalities because of the desire to operate in GPS denied environments. Due to advances in computer vision and control theory, monocular camera systems have received growing interest as an alternative/collaborative sensor to GPS systems. Cameras can act as navigational sensors by detecting and tracking feature points in an image. Current methods have a limited ability to relate feature points as they enter and leave the camera field of view (FOV). A vision-based position and orientation estimation method for aircraft navigation and control is described. This estimation method accounts for a limited camera FOV by releasing tracked features that are about to leave the FOV and tracking new features. At each time instant that new features are selected for tracking, the previous pose estimate is updated. The vision-based estimation scheme can provide input directly to the vehicle guidance system and autopilot. Simulations are performed wherein the vision-based pose estimation is integrated with a nonlinear flight model of an aircraft. Experimental verification of the pose estimation is performed using the modelled aircraft. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GLOBAL Positioning System KW - COMPUTER vision KW - CONTROL theory (Mathematics) KW - ESTIMATION theory KW - AUTOMATIC tracking KW - MONOCULAR vision N1 - Accession Number: 52928554; Kaiser, M. K. 1 Gans, N. R. 2 Dixon, W. E. 3; Email Address: wdixon@ufl.edu; Affiliation: 1: Air Force Research Laboratory 2: University of Texas, Dallas 3: University of Florida; Source Info: Jul2010, Vol. 46 Issue 3, p1064; Subject Term: GLOBAL Positioning System; Subject Term: COMPUTER vision; Subject Term: CONTROL theory (Mathematics); Subject Term: ESTIMATION theory; Subject Term: AUTOMATIC tracking; Subject Term: MONOCULAR vision; Number of Pages: 0p; Illustrations: 4 Black and White Photographs, 10 Diagrams, 10 Graphs; Document Type: Article L3 - 10.1109/TAES.2010.5545174 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52928554&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Murphey, Thomas W. AU - Cliff, Eugene M. AU - Lane, Steven A. T1 - Matching Space Antenna Deformation Electronic Compensation Strategies to Support Structure Architectures. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2010/07// VL - 46 IS - 3 M3 - Article SP - 1422 EP - 1436 SN - 00189251 AB - Radar systems are engineered to achieve a complex, yet functional, balance between diverse subsystems and competing requirements. One important trade for large deployable space radar antennas is between antenna dimensional stability and electronic signal processing for deformation compensation. This trade is first investigated for several different electronic compensation methods, and compensation capabilities are mapped into structural requirements. Second the structural requirements are translated into appropriate structural architectures. The scope of this study is limited to space radar systems, where loads causing antenna deformations differ significantly from terrestrial systems. Compensation strategies that allow structural requirements to be reduced by several orders of magnitude are identified. When considered early in the systems engineering process, the methods presented herein can be used to form a rationale for the selection and the development of a complementary combination of compensation electronics and structural architectures. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARTIFICIAL satellites KW - ELECTRONIC pulse techniques KW - RADAR -- Antennas KW - SYSTEMS engineering KW - SIGNAL processing N1 - Accession Number: 52928578; Murphey, Thomas W. 1; Email Address: vssv.branch.tasker@kirtland.af.mil Cliff, Eugene M. 2 Lane, Steven A. 1; Affiliation: 1: Air Force Research Laboratory 2: Virginia Tech; Source Info: Jul2010, Vol. 46 Issue 3, p1422; Subject Term: ARTIFICIAL satellites; Subject Term: ELECTRONIC pulse techniques; Subject Term: RADAR -- Antennas; Subject Term: SYSTEMS engineering; Subject Term: SIGNAL processing; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 0p; Illustrations: 4 Black and White Photographs, 5 Diagrams, 2 Charts, 8 Graphs; Document Type: Article L3 - 10.1109/TAES.2010.5545198 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52928578&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Greco, Maria AU - Stinco, Pietro AU - Gini, Fulvio AU - Rangaswamy, Muralidhar T1 - Impact of Sea Clutter Nonstationarity on Disturbance Covariance Matrix Estimation and CFAR Detector Performance. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2010/07// VL - 46 IS - 3 M3 - Article SP - 1502 EP - 1513 SN - 00189251 AB - Adaptive detection of signals embedded in non-Gaussian clutter is an important challenge for radar engineers. We present an analysis of sea clutter nonstationarity with respect to clutter covariance matrix estimation and its impact on the constant false alarm rate (CFAR) property of the normalized adaptive matched filter (NAMF). Three covariance matrix estimators, e.g., the sample covariance matrix (SCM), the normalized sample covariance matrix (NSCM), and the approximate maximum likelihood (AML) estimators, have been investigated. The impact of nonstationarity, which emerges in the statistical analysis of the clutter data, is measured in terms of probability of false alarm and probability of detection. Performance analysis is presented using both simulated data and measured sea clutter data recorded by two different X-band radars, namely, the Fynmeet radar and the IPIX radar. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANALYSIS of covariance KW - GAUSSIAN distribution KW - RADAR KW - ELECTRONIC systems KW - FALSE alarms N1 - Accession Number: 52928585; Greco, Maria 1; Email Address: m.greco@iet.unipi.it Stinco, Pietro 1 Gini, Fulvio 1 Rangaswamy, Muralidhar 2; Affiliation: 1: Department of "Ingegneria dell'Informazione", University of Pisa, Via G. Caruso 16, Pisa, Italy 2: Air Force Research Laboratory/SNHE, 80 Scott Drive, Hanscom Air Force Base, MA 01731-2909; Source Info: Jul2010, Vol. 46 Issue 3, p1502; Subject Term: ANALYSIS of covariance; Subject Term: GAUSSIAN distribution; Subject Term: RADAR; Subject Term: ELECTRONIC systems; Subject Term: FALSE alarms; Number of Pages: 0p; Illustrations: 1 Chart, 18 Graphs; Document Type: Article L3 - 10.1109/TAES.2010.5545205 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52928585&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jian Li AU - Xumin Zhu AU - Stoica, Petre AU - Rangaswamy, Muralidhar T1 - High Resolution Angle-Doppler Imaging for MTI Radar. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2010/07// VL - 46 IS - 3 M3 - Article SP - 1544 EP - 1556 SN - 00189251 AB - To reduce the need for training data or for accurate prior knowledge of the clutter statistics in space-time adaptive processing (STAP), we consider high resolution angle-Doppler imaging by processing each range bin of interest independently. Specifically, we use a weighted least-squares-based iterative adaptive approach (IAA) to form angle-Doppler images of both clutter and targets for each range bin of interest. The resulting angle-Doppler images can be used with localized detection approaches for moving target indication (MTI). We show via numerical examples that the robust and nonparametric IAA algorithm can be used to enhance the MTI performance significantly as compared with existing approaches. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DOPPLER effect KW - ELECTRONIC systems KW - ELECTRONIC pulse techniques KW - RADAR KW - ALGORITHMS N1 - Accession Number: 52928589; Jian Li 1; Email Address: li@dsp.ufl.edu Xumin Zhu 1 Stoica, Petre 2 Rangaswamy, Muralidhar 3; Affiliation: 1: Dept. of Electrical and Computer Engineering, University of Florida, Gainesville, FL 32611-6130 2: Dept. of Information Technology, Uppsala University, Uppsala, Sweden 3: Air Force Research Laboratory Sensors Directorate, Hanscom AFB, MA 01731; Source Info: Jul2010, Vol. 46 Issue 3, p1544; Subject Term: DOPPLER effect; Subject Term: ELECTRONIC systems; Subject Term: ELECTRONIC pulse techniques; Subject Term: RADAR; Subject Term: ALGORITHMS; Number of Pages: 0p; Illustrations: 11 Graphs; Document Type: Article L3 - 10.1109/TAES.2010.5545209 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52928589&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fleming, Timothy P. AU - Lambrecht, Michael R. AU - Cartwright, Keith L. T1 - Numerical Simulations of a Relativistic Inverted Magnetron. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2010/07// VL - 38 IS - 7 M3 - Article SP - 1563 EP - 1573 SN - 00933813 AB - A new design for an inverted magnetron is presented and modeled both analytically, using a single particle smooth bore relativistic approach, and numerically, using a massively parallel electromagnetic particle-in-cell code, Improved Concurrent Electromagnetic Particle-In-Cell (ICEPIC) code. Analysis and simulation confirm that the inverted magnetron design presented here is capable of oscillating in the π mode at axial magnetic fields of the order of ∼0.1 T. ICEPIC simulations demonstrate that the inverted magnetron is capable of fast start-up, mitigation of mode competition, π-mode dominance, and high output power, of the order of 1 GW in some cases. Moreover, these performance features spanned over a variety of magnetic fields and input voltages. In simulations, the inverted magnetron design presented here demonstrated that end-loss current, a common source of energy leakage in relativistic magnetrons, has been eliminated as a source of energy loss. However, radio frequency output power efficiencies only remained comparable with standard relativistic designs. This was due to poor energy exchange between the particle and field. Thus, a refinement of the slow wave structure may be necessary. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - COMPUTER simulation KW - SMOOTHNESS of functions KW - MICROWAVES KW - ELECTROMAGNETISM KW - ENERGY dissipation KW - End-loss current KW - high power microwaves KW - magnetrons N1 - Accession Number: 52316370; Fleming, Timothy P. 1; Email Address: timothy.fleming@kirtland.af.mil Lambrecht, Michael R. 1; Email Address: michael.lambrecht@kirtland.af.mil Cartwright, Keith L. 1; Email Address: keith.cartwright@kirtland.af.mil; Affiliation: 1: Air Force Research Laboratory, Albuquerque NM 87117 USA; Source Info: Jul2010, Vol. 38 Issue 7, p1563; Subject Term: MAGNETRONS; Subject Term: COMPUTER simulation; Subject Term: SMOOTHNESS of functions; Subject Term: MICROWAVES; Subject Term: ELECTROMAGNETISM; Subject Term: ENERGY dissipation; Author-Supplied Keyword: End-loss current; Author-Supplied Keyword: high power microwaves; Author-Supplied Keyword: magnetrons; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TPS.2010.2048209 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52316370&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gawron, Valerie J. AU - McMillan, Grant R. AU - Bailey, Randall E. T1 - The Effects of Time Delay and Physical Motion on Manual Flight Control: An In-Flight and Ground-Based Simulation Experiment. JO - International Journal of Aviation Psychology JF - International Journal of Aviation Psychology Y1 - 2010/07//Jul-Sep2010 VL - 20 IS - 3 M3 - Article SP - 221 EP - 248 PB - Taylor & Francis Ltd SN - 10508414 AB - An experiment addressed the effects of time delay and physical motion on manual flight control and flying qualities ratings. Flight tasks were presented on a head-up display in a variable-stability NT-33A aircraft. Specified maneuvers were performed under simulated instrument meteorological conditions with variable signal delays added to the flight control system. To assess the effects of physical motion, the same experiment was replicated with the airplane parked on the ground using a digital aerodynamic simulation. Increasing time delay degraded tracking performance more in the no-motion ground-based simulation than in the full-motion in-flight simulation. Similar results occurred for flying qualities ratings. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aviation Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLIGHT control KW - HUMAN-machine systems -- Manual control KW - SIMULATION methods & models KW - AIR pilots KW - AERODYNAMICS KW - FLIGHT simulators N1 - Accession Number: 52038265; Gawron, Valerie J. 1; Email Address: vgawron@mitre.org McMillan, Grant R. 2 Bailey, Randall E.; Affiliation: 1: MITRE Corporation, McLean, Virginia. 2: Air Force Research Laboratory, Dayton, Ohio.; Source Info: Jul-Sep2010, Vol. 20 Issue 3, p221; Subject Term: FLIGHT control; Subject Term: HUMAN-machine systems -- Manual control; Subject Term: SIMULATION methods & models; Subject Term: AIR pilots; Subject Term: AERODYNAMICS; Subject Term: FLIGHT simulators; Number of Pages: 28p; Illustrations: 1 Black and White Photograph, 1 Chart, 10 Graphs; Document Type: Article L3 - 10.1080/10508414.2010.487007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52038265&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Repperger, D. W. AU - Farris, K. A. T1 - Stochastic resonance-a nonlinear control theory interpretation. JO - International Journal of Systems Science JF - International Journal of Systems Science Y1 - 2010/07// VL - 41 IS - 7 M3 - Article SP - 897 EP - 907 SN - 00207721 AB - Stochastic resonance (SR) is an effect that has been known (Benzi, R., Sutera, A., and Vulpiani, A. (1981), 'The Mechanism of Stochastic Resonance', Journal of Physics, A14, L453-L457) for almost three decades and has been extensively studied in biology, statistics, signal processing and in numerous other eclectic areas (Wiesenfeld, K., and Moss, F. (1995), 'Stochastic Resonance and the Benefits of Noise: From Ice Ages to Crayfish and Squids', Nature, 373, 33-36). Herein, a nonlinear control theory analysis is conducted on how to better understand the class of systems that may exhibit the SR effect. Using nonlinear control theory methods, equilibrium points are manipulated to create the SR response (similar to shaping dynamical response in a phase plane). From this approach, a means of synthesising and designing the appropriate class of nonlinear systems is introduced. New types of nonlinear dynamics that demonstrate the SR effects are discovered, which may have utility in control theory as well as in many diverse applications. A numerical simulation illustrates some powerful attributes of these systems. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Systems Science is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STOCHASTIC analysis KW - SYSTEMS theory KW - SYSTEM analysis KW - MACHINE theory KW - PROCESS control KW - SIGNAL processing KW - biological systems KW - nonlinear dynamics KW - stochastic resonance N1 - Accession Number: 51312194; Repperger, D. W. 1 Farris, K. A. 1; Email Address: katheryn.farris@wpafb.af.mil; Affiliation: 1: Human Performance Wing, Air Force Research Laboratory, AFRL/RHCV, Wright-Patterson Air Force Base, Dayton, OH 45433-7022, USA.; Source Info: Jul2010, Vol. 41 Issue 7, p897; Subject Term: STOCHASTIC analysis; Subject Term: SYSTEMS theory; Subject Term: SYSTEM analysis; Subject Term: MACHINE theory; Subject Term: PROCESS control; Subject Term: SIGNAL processing; Author-Supplied Keyword: biological systems; Author-Supplied Keyword: nonlinear dynamics; Author-Supplied Keyword: stochastic resonance; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; Number of Pages: 11p; Illustrations: 14 Diagrams, 9 Graphs; Document Type: Article L3 - 10.1080/00207720903494692 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51312194&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ongstad, A. P. AU - Dente, G. C. AU - Tilton, M. L. AU - Chavez, J. R. AU - Kaspi, R. AU - Gianardi, D. M. T1 - High brightness from unstable resonator mid-IR semiconductor lasers. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/07// VL - 107 IS - 12 M3 - Article SP - 123113 PB - American Institute of Physics SN - 00218979 AB - We compare the performance of several optically pumped unstable resonator semiconductor lasers with cavity lengths of 4, 5, and 6 mm and operating in the mid-IR at 4.7 μm. The unstable resonator lasers (URLs) were fabricated by polishing a diverging cylindrical mirror on one of the facets. In general, the URL beam quality (BQ) was 1–2 times diffraction limited when operated at pump powers below 30 W (URL power ≤6 W) As the pump power is increased, the BQ is observed to degrade; at 60 W the URL’s were ∼3.5 times diffraction limited (URL power ≈11 W). The highest brightness URL, a 4-mm long device, was compared with an equivalent 4-mm long Fabry–Perot (FP) laser operated at different cavity widths. The performance of the broad area URL (500 μm width), as assessed by power-in-the-bucket measurements, was superior to both wide stripe (500 μm) and narrow pump stripe (100 μm) FP lasers. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTORS KW - LASERS KW - LASER beams KW - CYLINDERS (Engines) KW - OPTOELECTRONIC devices N1 - Accession Number: 51848777; Ongstad, A. P. 1; Email Address: Andrew.ongstad@Kirtland.af.mil Dente, G. C. 1 Tilton, M. L. 1 Chavez, J. R. 1 Kaspi, R. 1 Gianardi, D. M. 1; Affiliation: 1: Directed Energy Directorate AFRL/RDLAS, Air Force Research Laboratory, 3550 Aberdeen Avenue, Kirtland AFB, New Mexico 87117, USA; Source Info: Jul2010, Vol. 107 Issue 12, p123113; Subject Term: SEMICONDUCTORS; Subject Term: LASERS; Subject Term: LASER beams; Subject Term: CYLINDERS (Engines); Subject Term: OPTOELECTRONIC devices; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 4p; Illustrations: 1 Diagram, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.3435208 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51848777&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Enright, Michael P. AU - Chan, Kwai S. AU - Moody, Jonathan P. AU - Golden, Patrick J. AU - Chandra, Ramesh AU - Pentz, Alan C. T1 - Probabilistic Fretting Fatigue Assessment of Aircraft Engine Disks. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2010/07// VL - 132 IS - 7 M3 - Article SP - 725021 EP - 725029 SN - 07424795 AB - Fretting fatigue is a random process that continues to be a major source of damage associated with the failure of aircraft gas turbine engine components. Fretting fatigue is dominated by the fatigue crack growth phase and is strongly dependent on the magnitude of the stress values in the contact region. These stress values often have the most influence on small cracks where traditional long-crack fracture mechanics may not apply. A number of random variables can be used to model the uncertainty associated with the fatigue crack growth process. However these variables can often be reduced to a few primary random variables related to the size and location of the initial crack, variability associated with applied stress and crack growth life models, and uncertainly in the quality and frequency of nondeterministic inspections. In this paper an approach is presented for estimating the risk reduction associated with the nondestructive inspection of aircraft engine components subjected to fretting fatigue. Contact stress values in the blade attachment region are estimated using a fine mesh finite element model coupled with a singular integral equation solver and combined with bulk stress values to obtain the total stress gradient at the edge of contact. This stress gradient is applied to the crack growth life prediction of a mode I fretting fatigue crack. A probabilistic model of the fretting process is formulated and calibrated using failure data from an existing engine fleet. The resulting calibrated model is used to quantify the influence of inspection on the probability offracture of an actual military engine disk under real life loading conditions. The results can be applied to quantitative risk predictions of gas turbine engine components subjected to fretting fatigue. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES -- Motors KW - PROBABILITY theory KW - FRETTING corrosion KW - PLATES (Engineering) KW - MACHINE parts -- Failures KW - TURBINES N1 - Accession Number: 52382377; Enright, Michael P. 1 Chan, Kwai S. 1 Moody, Jonathan P. 1 Golden, Patrick J. 2 Chandra, Ramesh 3 Pentz, Alan C. 3; Affiliation: 1: Southwest Research Institute, San Antonio, IX 78238 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 3: NAVAIR, Patuxent River, MD 20670; Source Info: Jul2010, Vol. 132 Issue 7, p725021; Subject Term: AIRPLANES -- Motors; Subject Term: PROBABILITY theory; Subject Term: FRETTING corrosion; Subject Term: PLATES (Engineering); Subject Term: MACHINE parts -- Failures; Subject Term: TURBINES; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 332313 Plate Work Manufacturing; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1115/1.4000130 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52382377&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kajon, Adriana E. AU - Xiaoyan Lu AU - Erdman, Dean D. AU - Louie, Janice AU - Schnurr, David AU - St George, Kirsten AU - Koopmans, Marion P. AU - Allibhai, Taslim AU - Metzgar, David T1 - Molecular Epidemiology and Brief History of Emerging Adenovirus 14-Associated Respiratory Disease in the United States. JO - Journal of Infectious Diseases JF - Journal of Infectious Diseases Y1 - 2010/07//7/1/2010 VL - 202 IS - 1 M3 - Article SP - 93 EP - 103 SN - 00221899 AB - Background. First isolated in the Netherlands in 1955 during an outbreak of acute respiratory disease (ARD) among military recruits, human adenovirus 14 (HAdV-14) has historically been considered rare. With no precedent of circulation in North America, HAdV-14 has been isolated from military and civilian cases of ARD of variable severity since 2003 in the United States. Methods. Ninety-nine isolates from military and civilian cases from different geographic locations and circulation periods were characterized by restriction enzyme analysis of viral DNA and select gene sequencing. Results. All examined viruses were found to be identical and to belong to a new genome type designated "HAdV-14p1" (formerly known as "14a"). Comparative alignments of E1A, hexon, and fiber gene sequences with other subspecies B2 HAdVs suggest that HAdV-14p1, like the closely related HAdV-11a, arose from recombination among similar HAdV-11 and HAdV-14 ancestral strains. A deletion of 2 amino acids in the knob region of the fiber protein is the only identified unique characteristic of HAdV-14p1. Conclusion. The current geographic distribution of HAdV-14p1 involves at least 15 states in the Unites States. The role of the fiber mutations in the recent emergence of HAdV-14p1 ARD in North America warrants further study. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Infectious Diseases is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADENOVIRUS diseases KW - MOLECULAR epidemiology KW - PANDEMICS KW - DISEASE prevalence KW - DNA restriction enzymes KW - NUCLEOTIDE sequence KW - GENETIC recombination KW - COMMUNICABLE diseases -- Transmission KW - UNITED States N1 - Accession Number: 51772560; Kajon, Adriana E. 1 Xiaoyan Lu 2 Erdman, Dean D. 2 Louie, Janice 3 Schnurr, David 3 St George, Kirsten 4 Koopmans, Marion P. 5 Allibhai, Taslim 6 Metzgar, David 7; Affiliation: 1: Lovelace Respiratory Research Institute, Albuquerque, New Mexico 2: Centers for Disease Control and Prevention, Atlanta, Georgia 3: California Department of Health, Public Health Viral and Rickettsial Disease Laboratory, Richmond 4: Wadsworth Center, New York State Department of Health, Albany 5: National Institute for Public Health and the Environment, Bilthoven, the Netherlands 6: Wilford Hall Medical Center (United States Air Force Lackland Air Force Base), San Antonio, Texas 7: Department of Respiratory Disease Research, Naval Health Research Center, San Diego, California; Source Info: 7/1/2010, Vol. 202 Issue 1, p93; Subject Term: ADENOVIRUS diseases; Subject Term: MOLECULAR epidemiology; Subject Term: PANDEMICS; Subject Term: DISEASE prevalence; Subject Term: DNA restriction enzymes; Subject Term: NUCLEOTIDE sequence; Subject Term: GENETIC recombination; Subject Term: COMMUNICABLE diseases -- Transmission; Subject Term: UNITED States; Number of Pages: 11p; Illustrations: 3 Diagrams, 3 Charts; Document Type: Article L3 - 10.1086/653083 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51772560&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lai, Shu T. T1 - Importance of Surface Conditions for Spacecraft Charging. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2010/07//Jul/Aug2010 VL - 47 IS - 4 M3 - Article SP - 634 EP - 638 SN - 00224650 AB - This paper studies the importance of secondary and backscattered electrons in spacecraft charging. The secondary and backscattered electron yields from surface materials are affected not only by the energies of the incoming electrons but also by the surface condition. Some typical parameters characterizing the surface condition are the surface smoothness, thickness, surface composition, and surface contamination. By using the published formulae of secondary and backscattered electron yields, the critical temperature values for the onset of spacecraft charging are calculated. The results found are different for different yield formulae. The yields are not only important in governing the current balance at equilibrium and the onset of spacecraft charging, but also in affecting the accuracy of model calculations of the spacecraft potential. This paper suggests that, for predicting spacecraft charging or in spacecraft design, it is inadequate to look up published tables of the yields for a given type of surface material. It is necessary to measure the secondary electron and backscattered electron yields of an actual piece of the surface material, because the thickness, smoothness, surface composition, and so forth can affect the yields and, in turn, spacecraft charging. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles -- Electrostatic charging KW - ELECTRONS -- Backscattering KW - SECONDARY electron emission KW - ELECTRON distribution KW - ELECTROSTATICS N1 - Accession Number: 53385749; Lai, Shu T. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731; Source Info: Jul/Aug2010, Vol. 47 Issue 4, p634; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: ELECTRONS -- Backscattering; Subject Term: SECONDARY electron emission; Subject Term: ELECTRON distribution; Subject Term: ELECTROSTATICS; Number of Pages: 5p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.2514/1.48824 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53385749&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hoglund, Evelyn AU - Brungart, Douglas AU - Iyer, Nandini AU - Hamil, James AU - Mobley, Frank AU - Hall, John T1 - Auditory acuity for aircraft in real-world ambient environments. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2010/07// VL - 128 IS - 1 M3 - Article SP - 164 EP - 171 SN - 00014966 AB - Although many psychoacoustic studies have been conducted to examine the detection of masked target sounds, the vast majority of these studies have been conducted in carefully controlled laboratory listening environments, and their results may not apply to the detection of real-world sounds in the presence of naturalistic ambient sound fields. Those studies that have examined the detection of realistic naturally-occurring sounds have been conducted in uncontrolled listening environments (i.e., outdoor listening tests) where the experimenters were unable to precisely control, or even measure, the specific characteristics of the target and masker at the time of the detection judgment. This study represents an attempt to bridge the gap between unrealistic laboratory listening studies and uncontrolled outdoor listening studies through the use of pseudorandomly-presented real world recordings of target and masking sounds. Subjects were asked to detect helicopter signals in the context of an ongoing ambient recording in a two interval detection task. The results show that the signal-to-noise ratio required to detect an aircraft sound varies across different types of ambient environments (i.e., rural, suburban, or urban). [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOUND recordings KW - AMBIENT sounds KW - LISTENING KW - AUDITORY perception KW - SIGNAL-to-noise ratio N1 - Accession Number: 52289508; Hoglund, Evelyn 1; Email Address: hoglund.1@osu.edu Brungart, Douglas 1 Iyer, Nandini 1 Hamil, James 1 Mobley, Frank 1 Hall, John 1; Affiliation: 1: Air Force Research Laboratory, Human Effectiveness Directorate, 2610 Seventh Street, WPAFB, Ohio 45433; Source Info: Jul2010, Vol. 128 Issue 1, p164; Subject Term: SOUND recordings; Subject Term: AMBIENT sounds; Subject Term: LISTENING; Subject Term: AUDITORY perception; Subject Term: SIGNAL-to-noise ratio; NAICS/Industry Codes: 414440 Sound recording merchant wholesalers; NAICS/Industry Codes: 512210 Record Production; NAICS/Industry Codes: 512220 Integrated Record Production/Distribution; Number of Pages: 8p; Illustrations: 1 Chart, 6 Graphs; Document Type: Article L3 - 10.1121/1.3438480 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52289508&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wenbo Tang AU - Mathur, Manikandan AU - Haller, George AU - Hahn, Douglas C. AU - Ruggiero, Frank H. T1 - Lagrangian Coherent Structures near a Subtropical Jet Stream. JO - Journal of the Atmospheric Sciences JF - Journal of the Atmospheric Sciences Y1 - 2010/07// VL - 67 IS - 7 M3 - Article SP - 2307 EP - 2319 PB - American Meteorological Society SN - 00224928 AB - Direct Lyapunov exponents and stability results are used to extract and distinguish Lagrangian coherent structures (LCS) from a three-dimensional atmospheric dataset generated from the Weather Research and Forecasting (WRF) model. The numerical model is centered at 19.78°N, 155.55°W, initialized from the Global Forecast System for the case of a subtropical jet stream near Hawaii on 12 December 2002. The LCS are identified that appear to create optical and mechanical turbulence, as evidenced by balloon data collected during a measurement campaign near Hawaii. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Atmospheric Sciences is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAGRANGE equations KW - LYAPUNOV exponents KW - LYAPUNOV stability KW - METEOROLOGY -- Research KW - WEATHER forecasting KW - JET streams KW - HAWAII KW - Jets KW - Lagrangian circulation/transport KW - Stability KW - Subtropics N1 - Accession Number: 52351730; Wenbo Tang 1 Mathur, Manikandan 2 Haller, George 2,3; Email Address: george.haller@mcgill.ca Hahn, Douglas C. 4,5 Ruggiero, Frank H. 4; Affiliation: 1: School of Mathematical and Statistical Sciences, Arizona State University, Tempe, Arizona 2: Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 3: Department of Mechanical Engineering, McGill University, Montreal, Quebec, Canada 4: Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 5: Air Force Weather Weapon System, Hanscom Air Force Base, Massachusetts; Source Info: Jul2010, Vol. 67 Issue 7, p2307; Subject Term: LAGRANGE equations; Subject Term: LYAPUNOV exponents; Subject Term: LYAPUNOV stability; Subject Term: METEOROLOGY -- Research; Subject Term: WEATHER forecasting; Subject Term: JET streams; Subject Term: HAWAII; Author-Supplied Keyword: Jets; Author-Supplied Keyword: Lagrangian circulation/transport; Author-Supplied Keyword: Stability; Author-Supplied Keyword: Subtropics; NAICS/Industry Codes: 924120 Administration of Conservation Programs; NAICS/Industry Codes: 541990 All Other Professional, Scientific, and Technical Services; Number of Pages: 13p; Illustrations: 10 Graphs; Document Type: Article L3 - 10.1175/2010JAS3176.1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52351730&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hassan, Anthony M. AU - Jackson, Robert J. AU - Lindsay, Douglas R. AU - Rank, Michael G. T1 - Combat Stress Control and Prevention: What Can Be Learned from an Application of Workplace Behavioral Health in a Deployed Combat Environment? JO - Journal of Workplace Behavioral Health JF - Journal of Workplace Behavioral Health Y1 - 2010/07//Jul-Sep2010 VL - 25 IS - 3 M3 - Article SP - 169 EP - 180 SN - 15555240 AB - This article details a Combat Stress Control and Prevention (CSCP) team's tour during Operation Iraqi Freedom. It highlights the similarities between battlefield and Employee Assistance Programs (EAPs) behavioral health care methods and practices. A CSCP team's mission is to provide battle-front direct mental health services to commanders and combatants via consultation, education, advocacy and proximal prevention, intervention and stabilization, and if indicated, evacuation of overstressed troops. This team's access, credibility, and social networking were critical in preventing and responding to war-fighter's combat stressors in a timely manner. As in EAP work, credibility with leadership and bridging social capital are essential components for workplace behavioral health prevention success. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Workplace Behavioral Health is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMBAT stress reaction KW - DEPLOYMENT (Military strategy) KW - MENTAL health services KW - EMPLOYEE assistance programs KW - MILITARY personnel -- Services for KW - MENTAL health consultation KW - COMBAT -- Psychological aspects KW - SOCIAL networks KW - SOCIAL capital (Sociology) KW - combat stress control KW - deployment KW - reintegration KW - transition KW - workplace behavioral health N1 - Accession Number: 52756812; Hassan, Anthony M. 1; Email Address: hassana@usc.edu Jackson, Robert J. 2 Lindsay, Douglas R. 2 Rank, Michael G. 3; Affiliation: 1: School of Social Work, University of Southern California, Los Angeles, California, USA 2: United States Air Force Academy, Colorado Springs, Colorado, USA 3: School of Social Work, University of South Florida, Tampa, Florida, USA; Source Info: Jul-Sep2010, Vol. 25 Issue 3, p169; Subject Term: COMBAT stress reaction; Subject Term: DEPLOYMENT (Military strategy); Subject Term: MENTAL health services; Subject Term: EMPLOYEE assistance programs; Subject Term: MILITARY personnel -- Services for; Subject Term: MENTAL health consultation; Subject Term: COMBAT -- Psychological aspects; Subject Term: SOCIAL networks; Subject Term: SOCIAL capital (Sociology); Author-Supplied Keyword: combat stress control; Author-Supplied Keyword: deployment; Author-Supplied Keyword: reintegration; Author-Supplied Keyword: transition; Author-Supplied Keyword: workplace behavioral health; NAICS/Industry Codes: 623220 Residential Mental Health and Substance Abuse Facilities; NAICS/Industry Codes: 622210 Psychiatric and Substance Abuse Hospitals; NAICS/Industry Codes: 621330 Offices of Mental Health Practitioners (except Physicians); NAICS/Industry Codes: 624190 Other Individual and Family Services; Number of Pages: 12p; Illustrations: 1 Chart; Document Type: Article L3 - 10.1080/15555240.2010.496315 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52756812&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alarcon, Gene AU - Lyons, Joseph B. AU - Tartaglia, Frank T1 - Understanding Predictors of Engagement Within the Military. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2010/07//Jul-Sep2010 VL - 22 IS - 3 M3 - Article SP - 301 EP - 310 PB - Taylor & Francis Ltd SN - 08995605 AB - The current study explored organizational antecedents of employee engagement in a military organization. A survey was administered to junior military personnel assessing leadership effectiveness, role clarity, organizational culture, and peer group interactions as predictors of engagement. Leadership's influence on engagement was expected to be partially mediated by role clarity and organizational culture. Engagement was predicted to fully mediate the relationship between the aforementioned variables and turnover intentions. Results indicated that leadership's influence on engagement was fully mediated by role clarity and organizational culture. In addition, engagement fully mediated the relationship between all variables and turnover intentions. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY psychology KW - MILITARY personnel KW - LEADERSHIP KW - CORPORATE culture KW - PSYCHOLOGY KW - AGE groups N1 - Accession Number: 52174126; Alarcon, Gene 1; Email Address: gene.alarcon.ctr@wpafb.af.mil Lyons, Joseph B. 1 Tartaglia, Frank 1; Affiliation: 1: Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio.; Source Info: Jul-Sep2010, Vol. 22 Issue 3, p301; Subject Term: MILITARY psychology; Subject Term: MILITARY personnel; Subject Term: LEADERSHIP; Subject Term: CORPORATE culture; Subject Term: PSYCHOLOGY; Subject Term: AGE groups; Number of Pages: 10p; Illustrations: 2 Diagrams; Document Type: Article L3 - 10.1080/08995605.2010.492695 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52174126&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Drummy, Lawrence F. AU - Kübel, Christian T1 - Polymer Microscopy: Current Challenges. JO - Polymer Reviews JF - Polymer Reviews Y1 - 2010/07//Jul-Sep2010 VL - 50 IS - 3 M3 - Article SP - 231 EP - 234 PB - Taylor & Francis Ltd SN - 15583724 AB - The article discusses various reports published within the issue, including one by McConney and colleagues on the impact of the elastic modulus of polymeric materials, one by Zhong and Pochan on the techniques such as cryo-TEM tomography and the multitude of polymeric architectures, and one by Libera and Martin and colleagues on the generation of interpretable contrast for increasing the amount of the extarted microstructural information. KW - ATOMIC force microscopy KW - POLYMERIC composites KW - atomic force microscopy KW - microscopy KW - polymer KW - transmission electron microscopy N1 - Accession Number: 52976163; Drummy, Lawrence F. 1; Email Address: Lawrence.drummy@wpafb.af.mil Kübel, Christian 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, Ohio 2: Karlsruhe Institute of Technology, Institute of Nanotechnology, Eggenstein-Leopoldshafen, Germany; Source Info: Jul-Sep2010, Vol. 50 Issue 3, p231; Subject Term: ATOMIC force microscopy; Subject Term: POLYMERIC composites; Author-Supplied Keyword: atomic force microscopy; Author-Supplied Keyword: microscopy; Author-Supplied Keyword: polymer; Author-Supplied Keyword: transmission electron microscopy; Number of Pages: 4p; Document Type: Article L3 - 10.1080/15583724.2010.493625 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52976163&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ungár, Tamás AU - Ribárik, Gábor AU - Balogh, Levente AU - Salem, Ayman A. AU - Semiatin, S. Lee AU - Vaughan, Gavin B.M. T1 - Burgers vector population, dislocation types and dislocation densities in single grains extracted from a polycrystalline commercial-purity Ti specimen by X-ray line-profile analysis JO - Scripta Materialia JF - Scripta Materialia Y1 - 2010/07// VL - 63 IS - 1 M3 - Article SP - 69 EP - 72 SN - 13596462 AB - Burgers vector populations, dislocation types and dislocation densities are determined within individual grains of a polycrystalline commercial-purity titanium specimen by extending prior method of differentiating individual grains in a polycrystalline sample. The procedure has been tested at the focused X-ray beamline ID11 at the European Synchrotron Research Facility in Grenoble, France. The results provided by the method can be used as input for different crystal-plasticity calculations and for the experimental verification of numerical simulations. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISLOCATIONS in crystals KW - POLYCRYSTALS KW - TITANIUM KW - PLASTICITY KW - NUMERICAL analysis KW - SIMULATION methods & models KW - X-rays KW - GRENOBLE (France) KW - FRANCE KW - Burgers vector analysis KW - Dislocation types KW - Line broadening KW - Single grain diffraction N1 - Accession Number: 49857064; Ungár, Tamás 1; Email Address: ungar@ludens.elte.hu Ribárik, Gábor 1 Balogh, Levente 1 Salem, Ayman A. 2 Semiatin, S. Lee 2 Vaughan, Gavin B.M. 3; Affiliation: 1: Department of Materials Physics, Eötvös University Budapest H-1518, POB 32, Budapest, Hungary 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 3: European Synchrotron Research Facility, B. P. 220, F-38043 Grenoble Cedex, France; Source Info: Jul2010, Vol. 63 Issue 1, p69; Subject Term: DISLOCATIONS in crystals; Subject Term: POLYCRYSTALS; Subject Term: TITANIUM; Subject Term: PLASTICITY; Subject Term: NUMERICAL analysis; Subject Term: SIMULATION methods & models; Subject Term: X-rays; Subject Term: GRENOBLE (France); Subject Term: FRANCE; Author-Supplied Keyword: Burgers vector analysis; Author-Supplied Keyword: Dislocation types; Author-Supplied Keyword: Line broadening; Author-Supplied Keyword: Single grain diffraction; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2010.03.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49857064&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adedeji, Adetayo V. AU - Ahyi, Ayayi C. AU - Williams, John R. AU - Mohney, Suzanne E. AU - Schofield, James D. T1 - Ambient temperature characteristics of Schottky contacts on 4H–SiC aged in air at 350°C JO - Solid-State Electronics JF - Solid-State Electronics Y1 - 2010/07// VL - 54 IS - 7 M3 - Article SP - 736 EP - 740 SN - 00381101 AB - Abstract: A metallization scheme suitable to explore the capability of 4H–SiC for high temperature applications was designed and fabricated on Schottky barrier diodes (SBDs). The device electrical characteristics measured at room temperature were monitored over 1500h cumulative annealing in air at 350°C. Schottky barrier device parameters were stable over the annealing period. Good and stable adhesion properties of the protective metallization stack on SiC and on SiO2 were reported as a function of duration of annealing as well. It was observed that platinum layer that was sputter-deposited at 250°C as part of the metallization stack improved the adhesion properties of the metallization remarkably. [Copyright &y& Elsevier] AB - Copyright of Solid-State Electronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCHOTTKY-barrier diodes KW - SILICON carbide KW - TEMPERATURE effect KW - HIGH temperatures KW - MICROFABRICATION KW - PLATINUM KW - MATERIALS -- Electric properties KW - ADHESION KW - MICROELECTRONICS KW - Contact metallization KW - Elevated temperature KW - Harsh environment microelectronics KW - Schottky contact characteristics N1 - Accession Number: 50359815; Adedeji, Adetayo V. 1; Email Address: avadedeji@mail.ecsu.edu Ahyi, Ayayi C. 2 Williams, John R. 2 Mohney, Suzanne E. 3 Schofield, James D. 4; Affiliation: 1: Department of Chemistry, Geology and Physics, Elizabeth City State University, Elizabeth City, NC 27909, United States 2: Department of Physics, Auburn University, Auburn, AL 36849, United States 3: Department of Materials Science and Engineering, Pennsylvania State University, Pennsylvania, PA 16802, United States 4: Air Force Research Laboratory, Wright-Patterson AFB, Ohio, United States; Source Info: Jul2010, Vol. 54 Issue 7, p736; Subject Term: SCHOTTKY-barrier diodes; Subject Term: SILICON carbide; Subject Term: TEMPERATURE effect; Subject Term: HIGH temperatures; Subject Term: MICROFABRICATION; Subject Term: PLATINUM; Subject Term: MATERIALS -- Electric properties; Subject Term: ADHESION; Subject Term: MICROELECTRONICS; Author-Supplied Keyword: Contact metallization; Author-Supplied Keyword: Elevated temperature; Author-Supplied Keyword: Harsh environment microelectronics; Author-Supplied Keyword: Schottky contact characteristics; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.sse.2010.03.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50359815&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jansen, Ryan AU - Wysong, Ingrid AU - Gimelshein, Sergey AU - Zeifman, Michael AU - Buck, Udo T1 - Nonequilibrium numerical model of homogeneous condensation in argon and water vapor expansions. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2010/06/28/ VL - 132 IS - 24 M3 - Article SP - 244105 PB - American Institute of Physics SN - 00219606 AB - A computational approach capable of modeling homogeneous condensation in nonequilibrium environments is presented. The approach is based on the direct simulation Monte Carlo (DSMC) method, extended as appropriate to include the most important processes of cluster nucleation and evolution at the microscopic level. The approach uses a recombination-reaction energy-dependent mechanism of the DSMC method for the characterization of dimer formation, and the RRK model for the cluster evaporation. Three-step testing and validation of the model is conducted by (i) comparison of clusterization rates in an equilibrium heat bath with theoretical predictions for argon and water vapor and adjustment of the model parameters, (ii) comparison of the nonequilibrium argon cluster size distributions with experimental data, and (iii) comparison of the nonequilibrium water cluster size distributions with experimental measurements. Reasonable agreement was observed for all three parts of the validation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARGON KW - MONTE Carlo method KW - WATER vapor transport KW - MOLECULAR dynamics KW - CONDENSATION N1 - Accession Number: 51848602; Jansen, Ryan 1 Wysong, Ingrid 2 Gimelshein, Sergey 3; Email Address: gimelshe@usc.edu Zeifman, Michael 4 Buck, Udo 5; Affiliation: 1: University of Southern California, Los Angeles, California 90089, USA 2: Air Force Research Laboratory, Edwards AFB, California 93524, USA 3: ERC, Inc., Edwards AFB, California 93524, USA 4: Luminad Technologies, Sharon, Massachusetts 02067, USA 5: Max-Planck-Institut fuer Dynamik und Selbstorganisation, 37073 Goettingen, Germany; Source Info: 6/28/2010, Vol. 132 Issue 24, p244105; Subject Term: ARGON; Subject Term: MONTE Carlo method; Subject Term: WATER vapor transport; Subject Term: MOLECULAR dynamics; Subject Term: CONDENSATION; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 12p; Illustrations: 3 Charts, 8 Graphs; Document Type: Article L3 - 10.1063/1.3447379 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51848602&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jacobs, J. David AU - Arlen, Mike J. AU - Wang, David H. AU - Ounaies, Zoubeida AU - Berry, Rajiv AU - Tan, Loon-Seng AU - Garrett, Patrick H. AU - Vaia, Richard A. T1 - Dielectric characteristics of polyimide CP2 JO - Polymer JF - Polymer Y1 - 2010/06/24/ VL - 51 IS - 14 M3 - Article SP - 3139 EP - 3146 SN - 00323861 AB - Abstract: High-performance aerospace-grade polyimides such as CP2 fulfill many important roles in a wide range of applications. A thorough understanding of the polymer matrix’s physiochemical properties is an important consideration when developing polymer nanocomposite materials. In this work, we report the dielectric properties of polyimide CP2 including the primary and two secondary dipole relaxations, and their thermal characteristics by way of temperature variable impedance spectroscopy (10−2 to 106 Hz, −40 to 225 °C). Special emphasis has been placed on detailing the characteristic phenomena near CP2′s glass transition (199 °C). The consequences of residual DMAc solvent on CP2′s overall loss and relaxation characteristics are also discussed. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYIMIDES KW - POLYMERS -- Electric properties KW - NANOCOMPOSITE materials KW - IMPEDANCE spectroscopy KW - DIELECTRIC relaxation KW - POLYMERS -- Thermal properties KW - GLASS transition temperature KW - DIELECTRIC loss KW - Dielectric properties KW - Impedance spectroscopy KW - Polyimide N1 - Accession Number: 51811551; Jacobs, J. David 1,2 Arlen, Mike J. 1,3,4 Wang, David H. 1,5 Ounaies, Zoubeida 6 Berry, Rajiv 1 Tan, Loon-Seng 1 Garrett, Patrick H. 7 Vaia, Richard A. 1; Email Address: richard.vaia@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Nanostructured and Biological Materials Branch, Wright-Patterson AFB, OH 45433, USA 2: Universal Technology Corporation, 1270 North Fairfield Rd., Dayton, OH 45432, USA 3: Department of Polymers Science and Engineering, University of Akron, Akron, OH 44325, USA 4: Now with: Luna Innovations, 1 Riverside Circle, Suite 400, Roanoke, VA 24016, USA 5: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA 6: Department of Aerospace Engineering, Texas A&M University, College Station, TX 77843, USA 7: Department of Electrical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA; Source Info: Jun2010, Vol. 51 Issue 14, p3139; Subject Term: POLYIMIDES; Subject Term: POLYMERS -- Electric properties; Subject Term: NANOCOMPOSITE materials; Subject Term: IMPEDANCE spectroscopy; Subject Term: DIELECTRIC relaxation; Subject Term: POLYMERS -- Thermal properties; Subject Term: GLASS transition temperature; Subject Term: DIELECTRIC loss; Author-Supplied Keyword: Dielectric properties; Author-Supplied Keyword: Impedance spectroscopy; Author-Supplied Keyword: Polyimide; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.polymer.2010.04.072 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51811551&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Drummy, Lawrence F. AU - Apt, Scott AU - Shiffler, Don AU - Golby, Ken AU - LaCour, Matt AU - Maruyama, Benji AU - Vaia, Richard A. T1 - Nanostructural evolution during emission of CsI-coated carbon fiber cathodes. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/06/15/ VL - 107 IS - 11 M3 - Article SP - 113304 PB - American Institute of Physics SN - 00218979 AB - Carbon-based nanofiber and microfiber cathodes exhibit very low voltages for the onset of electron emission, and thus provide exciting opportunities for applications ranging from high power microwave sources to field emission displays. CsI coatings have been experimentally shown to lower the work function for emission from the fiber tips, although little is known about the microstructure of the fibers themselves in their as-received state, after coating with CsI, or after being subjected to high voltage cycling. Longitudinal cross sections of the original, unused CsI-coated fibers produced by focused ion beam lift-out revealed a nanostructured graphitic core surrounded by an amorphous carbon shell with submicron sized islands of crystalline CsI on the outer surface. Aberration-corrected high resolution electron microscopy (HREM) of the fiber core achieved 0.10 nm resolution, with the graphite (200) clearly visible in digital fast Fourier transformations of the 2–4 nm highly ordered graphitic domains. As the cathode fibers are cycled at high voltage, HREM demonstrates that the graphitic ordering of the core increases with the number of cycles, however the structure and thickness of the amorphous carbon layer remains unchanged. These results are consistent with micro-Raman measurements of the fiber disordered/graphitic (D/G) band ratios. After high voltage cycling, a uniform ∼100 nm film at the fiber tip was evident in both bright field transmission electron microscopy (TEM) and high angle annular dark field scanning TEM (STEM). Low-dose electron diffraction techniques confirmed the amorphous nature of this film, and STEM with elemental mapping via x-ray energy dispersive spectroscopy indicates this layer is composed of CsIO. The oxidative evolution of tip composition and morphology due to impurities in the chamber, along with increased graphitization of the fiber core, contributes to changes in emission behavior with cycling. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURED materials KW - NANOSTRUCTURES KW - NANOFIBERS KW - CARBON KW - CATHODES N1 - Accession Number: 55566819; Drummy, Lawrence F. 1,2; Email Address: lawrence.drummy@wpafb.af.mil Apt, Scott 1,2 Shiffler, Don 3 Golby, Ken 4 LaCour, Matt 4 Maruyama, Benji 1 Vaia, Richard A. 1; Affiliation: 1: ARFL/RXBN, Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 43433, USA 2: UES Inc., Dayton, Ohio 45432, USA 3: AFRL/RDH, Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico 87117, USA 4: SAIC, Inc., Albuquerque, New Mexico 87106, USA; Source Info: Jun2010, Vol. 107 Issue 11, p113304; Subject Term: NANOSTRUCTURED materials; Subject Term: NANOSTRUCTURES; Subject Term: NANOFIBERS; Subject Term: CARBON; Subject Term: CATHODES; Number of Pages: 6p; Illustrations: 7 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.3428463 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55566819&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Woodward, Christopher AU - Asta, Mark AU - Trinkle, Dallas R. AU - Lill, James AU - Angioletti-Uberti, Stefano T1 - Ab initio simulations of molten Ni alloys. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/06/15/ VL - 107 IS - 11 M3 - Article SP - 113522 PB - American Institute of Physics SN - 00218979 AB - Convective instabilities responsible for misoriented grains in directionally solidified turbine airfoils are produced by variations in liquid–metal density with composition and temperature across the solidification zone. Here, fundamental properties of molten Ni-based alloys, required for modeling these instabilities, are calculated using ab initio molecular dynamics simulations. Equations of state are derived from constant number-volume-temperature ensembles at 1830 and 1750 K for elemental, binary (Ni–X, X=Al, W, Re, and Ta) and ternary (Ni–Al–X, X=W, Re, and Ta) Ni alloys. Calculated molar volumes agree to within 0.6%–1.8% of available measurements. Predictions are used to investigate the range of accuracy of a parameterization of molar volumes with composition and temperature based on measurements of binary alloys. Structural analysis reveals a pronounced tendency for icosahedral short-range order for Ni–W and Ni–Re alloys and the calculations provide estimates of diffusion rates and their dependence on compositions and temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TURBINES KW - AEROFOILS KW - SOLIDIFICATION KW - LIQUID alloys KW - MOLECULAR dynamics KW - BINARY metallic systems N1 - Accession Number: 55566771; Woodward, Christopher 1; Email Address: christopher.woodward@wpafb.af.mil Asta, Mark 2 Trinkle, Dallas R. 3 Lill, James 4 Angioletti-Uberti, Stefano 5; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio 45433-7817, USA 2: Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA and Department of Chemical Engineering and Materials Science, University of California, Davis, Davis, California 95616, USA 3: Department of Materials Science and Engineering, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801, USA 4: High Performance Technologies Inc., Wright Patterson Air Force Base, Dayton, Ohio 45433-7817, USA 5: Department of Materials, Imperial College London, Prince Consort Road 20, SW72BP London, United Kingdom; Source Info: Jun2010, Vol. 107 Issue 11, p113522; Subject Term: TURBINES; Subject Term: AEROFOILS; Subject Term: SOLIDIFICATION; Subject Term: LIQUID alloys; Subject Term: MOLECULAR dynamics; Subject Term: BINARY metallic systems; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 10p; Illustrations: 3 Charts, 8 Graphs; Document Type: Article L3 - 10.1063/1.3437644 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55566771&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chaure, Nandu B. AU - Basova, Tamara AU - Zahedi, Marjan AU - Ray, Asim K. AU - Sharma, Ashwani K. AU - Durmuş, Mahmut AU - Ahsen, Vefa T1 - Solution processed tetrasubstituted zinc phthalocyanine as an active layer in organic field effect transistors. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/06/15/ VL - 107 IS - 11 M3 - Article SP - 114503 PB - American Institute of Physics SN - 00218979 AB - Spun films of liquid crystalline peripheral-tetrasubstituted zinc (II) phthalocyanine (Pc) derivatives have been employed as active organic semiconducting layers in the fabrication of organic field effect transistors. The Pc molecules in the thin film formulation are stacked perpendicular to the substrate. Values of 1.8×10-4 cm2 V-1 s-1 and 103 were estimated for the field-effect mobility and on/off ratio, respectively, from the hysteresis-free transistor characteristics. The transistor can be switched on and off at a relatively low value of 3.7 V for threshold voltage. The carrier transport is believed to be largely determined by the multidomain Pc film structure. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC KW - PHTHALOCYANINES KW - ORGANIC field-effect transistors KW - LIQUID crystals KW - SEMICONDUCTORS N1 - Accession Number: 55566820; Chaure, Nandu B. 1 Basova, Tamara 2 Zahedi, Marjan 3 Ray, Asim K. 3; Email Address: asim.ray@brunel.ac.uk Sharma, Ashwani K. 4 Durmuş, Mahmut 5 Ahsen, Vefa 5; Affiliation: 1: Department of Physics, University of Pune, Ganeshkhind, Pune 411007, India 2: Nikolaev Institute of Inorganic Chemistry, Lavrentiev pr., 3, Novosibirsk 630090, Russia 3: The Wolfson Centre for Materials Processing, Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom 4: Space Vehicles Directorate, Air Force Research Laboratory, 3550 Aberdeen Avenue, SE Kirtland AFB, New Mexico 87117, USA 5: Department of Chemistry, Gebze Institute of Technology, P.O. Box 141, 41400 Gebze-Kocaeli, Turkey; Source Info: Jun2010, Vol. 107 Issue 11, p114503; Subject Term: ZINC; Subject Term: PHTHALOCYANINES; Subject Term: ORGANIC field-effect transistors; Subject Term: LIQUID crystals; Subject Term: SEMICONDUCTORS; NAICS/Industry Codes: 325130 Synthetic Dye and Pigment Manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 5p; Illustrations: 2 Diagrams, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1063/1.3428386 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55566820&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dunckle, C. G. AU - Altfeder, I. B. AU - Voevodin, A. A. AU - Jones, J. AU - Krim, J. AU - Taborek, P. T1 - Temperature dependence of single-asperity friction for a diamond on diamondlike carbon interface. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/06/15/ VL - 107 IS - 11 M3 - Article SP - 114903 PB - American Institute of Physics SN - 00218979 AB - A variable temperature, ultrahigh vacuum atomic force microscope (AFM) was used to characterize interfacial friction for a single-asperity diamond contact on a diamondlike carbon (DLC) substrate over a nominal substrate temperature range of 90 to 275 K. Calibrated friction force measurements were obtained by analyzing lateral force hysteresis loops as a function of normal force. For sufficiently large normal forces, the lateral force was proportional to the normal force, and a friction coefficient μ could be identified. μ varied approximately linearly with substrate temperature, with μ=0.28 at T=90 K and μ=0.38 at 275 K. These results are compared to other recent variable temperature AFM friction measurements and to theoretical calculations based on the Tomlinson model. This comparison is obscured by large, experimentally uncontrolled temperature differences between the tip and the substrate which inevitably exist in conventional, variable temperature AFMs. A thermal model which can be used to quantitatively estimate these temperature differences is presented. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TEMPERATURE KW - FRICTION KW - DIAMONDS KW - INTERFACES (Physical sciences) KW - CARBON N1 - Accession Number: 55566812; Dunckle, C. G. 1; Email Address: cdunckle@uci.edu Altfeder, I. B. 2 Voevodin, A. A. 2 Jones, J. 2 Krim, J. 3 Taborek, P. 1; Affiliation: 1: University of California, Irvine, California 92697, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, RXBT, Wright-Patterson Air Force Base, Ohio 45433, USA 3: North Carolina State University, Raleigh, North Carolina 27695, USA; Source Info: Jun2010, Vol. 107 Issue 11, p114903; Subject Term: TEMPERATURE; Subject Term: FRICTION; Subject Term: DIAMONDS; Subject Term: INTERFACES (Physical sciences); Subject Term: CARBON; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 414410 Jewellery and watch merchant wholesalers; NAICS/Industry Codes: 423940 Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers; Number of Pages: 6p; Illustrations: 1 Diagram, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.3436564 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55566812&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hoon Joo Lee AU - Owens, Jeffery R. T1 - Design of superhydrophobic ultraoleophobic NyCo. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2010/06/15/ VL - 45 IS - 12 M3 - Article SP - 3247 EP - 3253 PB - Springer Science & Business Media B.V. SN - 00222461 AB - The apparent contact angles of dodecane droplets deposited on a 50:50 nylon:cotton blended woven fabric (NyCo) were measured, and the characteristics required for an ultraoleophobic surface were described. The metastable Cassie–Baxter model, a transition status from the original Cassie–Baxter model to the Wenzel model, was investigated to design ultraoleophobic surfaces and to understand the wetting behavior of such surfaces. Using chemical and geometrical modifications of NyCo, a surface having contact angles to dodecane of greater than 150° and water contact angles of greater than 165° has been prepared. Good agreement between the predicted and measured contact angles was obtained. Developing a superhydrophobic ultraoleophobic material has been achieved by two criteria: a low-surface-energy and a properly designed surface morphology. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NYLON KW - COTTON KW - TEXTURED woven textiles KW - TEXTILES KW - SURFACE chemistry N1 - Accession Number: 49133141; Hoon Joo Lee 1; Email Address: hoonjoo_lee@ncsu.edu Owens, Jeffery R. 2; Affiliation: 1: College of Textiles, North Carolina State University, 2401 Research Drive, Raleigh, NC 27695, USA 2: Air Force Research Laboratory, RXQL, 139 Barnes Drive, Building 1117, Tyndall Air Force Base, FL 32403, USA; Source Info: Jun2010, Vol. 45 Issue 12, p3247; Subject Term: NYLON; Subject Term: COTTON; Subject Term: TEXTURED woven textiles; Subject Term: TEXTILES; Subject Term: SURFACE chemistry; NAICS/Industry Codes: 111920 Cotton Farming; NAICS/Industry Codes: 115113 Crop Harvesting, Primarily by Machine; NAICS/Industry Codes: 424590 Other Farm Product Raw Material Merchant Wholesalers; NAICS/Industry Codes: 313110 Fiber, Yarn, and Thread Mills; NAICS/Industry Codes: 313210 Broadwoven Fabric Mills; NAICS/Industry Codes: 314999 All Other Miscellaneous Textile Product Mills; NAICS/Industry Codes: 414130 Piece goods, notions and other dry goods merchant wholesalers; NAICS/Industry Codes: 424310 Piece Goods, Notions, and Other Dry Goods Merchant Wholesalers; Number of Pages: 7p; Illustrations: 5 Black and White Photographs, 3 Diagrams; Document Type: Article L3 - 10.1007/s10853-010-4332-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49133141&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, Z. AU - Yang, A. AU - Mahalingam, K. AU - Averett, K. L. AU - Gao, J. AU - Brown, G. J. AU - Vittoria, C. AU - Harris, V. G. T1 - Structure, magnetic, and microwave properties of thick Ba-hexaferrite films epitaxially grown on GaN/Al2O3 substrates. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/06/14/ VL - 96 IS - 24 M3 - Article SP - 242502 PB - American Institute of Physics SN - 00036951 AB - Thick barium hexaferrite [BaO·(Fe2O3)6] films, having the magnetoplumbite structure (i.e., Ba M), were epitaxially grown on c-axis oriented GaN/Al2O3 substrates by pulsed laser deposition followed by liquid phase epitaxy. X-ray diffraction showed (0,0,2n) crystallographic alignment with pole figure analyses confirming epitaxial growth. High resolution transmission electron microscopy images revealed magnetoplumbite unit cells stacked with limited interfacial mixing. Saturation magnetization, 4πMs, was measured for as-grown films to be 4.1±0.3 kG with a perpendicular magnetic anisotropy field of 16±0.3 kOe. Ferromagnetic resonance linewidth, the peak-to-peak power absorption derivative at 53 GHz, was 86 Oe. These properties will prove enabling for the integration of low loss Ba M ferrite microwave passive devices with active semiconductor circuit elements in systems-on-a-wafer architecture. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THICK films KW - RESEARCH KW - X-ray diffraction KW - MAGNETIC properties KW - TRANSMISSION electron microscopes KW - FERROMAGNETIC resonance KW - MICROWAVE devices KW - GALLIUM arsenide KW - SEMICONDUCTORS N1 - Accession Number: 51526985; Chen, Z. 1; Email Address: chenzhaohui2001@hotmail.com Yang, A. 1 Mahalingam, K. 2 Averett, K. L. 2 Gao, J. 1,3 Brown, G. J. 2 Vittoria, C. 1,3 Harris, V. G. 1,3; Affiliation: 1: Center for Microwave Magnetic Materials and Integrated Circuits, Northeastern University, Boston, Massachusetts 02155, 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, 3: Department of Electrical and Computer Engineering, Northeastern University, Boston, Massachusetts 02115,; Source Info: 6/14/2010, Vol. 96 Issue 24, p242502; Subject Term: THICK films; Subject Term: RESEARCH; Subject Term: X-ray diffraction; Subject Term: MAGNETIC properties; Subject Term: TRANSMISSION electron microscopes; Subject Term: FERROMAGNETIC resonance; Subject Term: MICROWAVE devices; Subject Term: GALLIUM arsenide; Subject Term: SEMICONDUCTORS; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 2 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.3446867 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51526985&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Thomas M. AU - Friedman, Jeffrey F. AU - Caples, Connor M. AU - Shuman, Nicholas S. AU - Van Doren, Jane M. AU - Bardaro, Michael F. AU - Nguyen, Pho AU - Zweiben, Cindy AU - Campbell, Matthew J. AU - Viggiano, A. A. T1 - Electron attachment to sulfur oxyhalides: SOF2, SOCl2, SO2F2, SO2Cl2, and SO2FCl attachment rate coefficients, 300–900 K. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2010/06/07/ VL - 132 IS - 21 M3 - Article SP - 214302 PB - American Institute of Physics SN - 00219606 AB - Electron attachment to SOF2, SOCl2, SO2F2, SO2FCl, and SO2Cl2 was studied with two flowing-afterglow Langmuir-probe apparatuses over the temperature range 300–900 K. Attachment rate coefficients at 300 K are ka=2.6±0.8×10-10(SOF2), 1.8±0.5×10-8(SOCl2), 4.8±0.7×10-10(SO2F2), 2.4±0.7×10-9(SO2Cl2), and 2.0±0.6×10-7 cm3 s-1(SO2FCl). Arrhenius plots of the data imply activation energies of 56±22 meV(SOF2), 92±40(SO2F2), 44±22 meV(SOCl2), and 29±15 meV(SO2Cl2). The rate coefficients for SO2FCl decrease slightly with temperature, commensurate with the decrease in the capture rate coefficient. Electron attachment to SOF2 and SO2F2 is nondissociative, while reaction with SOCl2, SO2FCl, and SO2Cl2 is dissociative. Dissociative attachment is dominated by channels arising from S–Cl bond cleavage but also includes a minor channel forming a dihalide product ion. Branching fraction data are reported for the dissociative attachment channels. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - DISSOCIATION (Chemistry) KW - SCISSION (Chemistry) KW - PARTICLES (Nuclear physics) KW - NUCLEAR physics N1 - Accession Number: 51246332; Miller, Thomas M. 1,2; Email Address: thomas.miller.3@bc.edu Friedman, Jeffrey F. 3 Caples, Connor M. 1 Shuman, Nicholas S. 1 Van Doren, Jane M. 4 Bardaro, Michael F. 5 Nguyen, Pho 6 Zweiben, Cindy 6 Campbell, Matthew J. 6 Viggiano, A. A. 1; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, 29 Randolph Road, Hanscom Air Force Base, Massachusetts 01731-3010, 2: Institute for Scientific Research, Boston College, Chestnut Hill, MA. 3: Department of Physics, University of Puerto Rico, Mayaguez, PR. 4: Center for Food Safety and Applied Nutrition/FDA, College Park, MD. 5: Department of Chemistry, University of Washington, Seattle, WA. 6: Department of Chemistry, College of the Holy Cross, 1 College St., Worcester, Massachusetts 01610-2395,; Source Info: 6/7/2010, Vol. 132 Issue 21, p214302; Subject Term: ELECTRONS; Subject Term: DISSOCIATION (Chemistry); Subject Term: SCISSION (Chemistry); Subject Term: PARTICLES (Nuclear physics); Subject Term: NUCLEAR physics; Number of Pages: 9p; Illustrations: 4 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.3427527 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51246332&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - OSUR, ALAN T1 - Fighting for Hope: African American Troops of the 93rd Infantry Division in World War II and Postwar America. JO - American Historical Review JF - American Historical Review Y1 - 2010/06// VL - 115 IS - 3 M3 - Book Review SP - 858 EP - 858 PB - Oxford University Press / USA SN - 00028762 AB - The article reviews the book "Fighting for Hope: African American Troops of the 93rd Infantry Division in World War II and Postwar America," by Robert F. Jefferson. KW - WORLD War, 1939-1945 -- African Americans KW - NONFICTION KW - JEFFERSON, Robert F. KW - FIGHTING for Hope: African American Troops of the 93rd Infantry Division in World War II & Postwar America (Book) N1 - Accession Number: 51895174; OSUR, ALAN 1; Affiliation: 1: United States Air Force Academy.; Source Info: Jun2010, Vol. 115 Issue 3, p858; Subject Term: WORLD War, 1939-1945 -- African Americans; Subject Term: NONFICTION; Reviews & Products: FIGHTING for Hope: African American Troops of the 93rd Infantry Division in World War II & Postwar America (Book); People: JEFFERSON, Robert F.; Number of Pages: 2/3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51895174&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yoo, K. H. AU - Albrecht, J. D. AU - Ram-Mohan, L. R. T1 - Strain in layered zinc blende and wurtzite semiconductor structures grown along arbitrary crystallographic directions. JO - American Journal of Physics JF - American Journal of Physics Y1 - 2010/06// VL - 78 IS - 6 M3 - Article SP - 589 EP - 597 SN - 00029505 AB - We present a simple approach to the evaluation of strain in zinc blende and in wurtzite layered semiconductor structures. These crystallographic structures are of particular interest because of their importance in optoelectronic device applications. The composite layered materials are currently grown pseudomorphically on substrates, which dictate the strain in the layers. Components of the strain are derived for arbitrary crystallographic growth directions. The strain in the layer determines the piezoelectric field in each layer in the structure. The strain and the strain-induced electric field are important in designing layered heterostructures with specific electronic energy levels for device applications. The methods presented are more generally applicable to other crystallographic structures and composite pseudomorphically grown materials. Illustrative problems and solutions are included. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Physics is the property of American Association of Physics Teachers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPHALERITE KW - WURTZITE KW - SEMICONDUCTORS KW - CRYSTALLOGRAPHY KW - OPTOELECTRONIC devices KW - HETEROSTRUCTURES N1 - Accession Number: 51695316; Yoo, K. H. 1 Albrecht, J. D. 2 Ram-Mohan, L. R. 3; Email Address: Irram@wpi.edu; Affiliation: 1: Department of Physics and Research Institute for Basic Sciences, Kyung Hee University, Seoul 130-701, Korea 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433 3: Department of Physics and Department of Electrical and Computer Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts 01609; Source Info: Jun2010, Vol. 78 Issue 6, p589; Subject Term: SPHALERITE; Subject Term: WURTZITE; Subject Term: SEMICONDUCTORS; Subject Term: CRYSTALLOGRAPHY; Subject Term: OPTOELECTRONIC devices; Subject Term: HETEROSTRUCTURES; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; Number of Pages: 9p; Document Type: Article L3 - 10.1119/1.3291214 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51695316&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grigsby, Claude C. AU - Rizki, Mateen M. AU - Tamburino, Louis A. AU - Pitsch, Rhonda L. AU - Shiyanov, Pavel A. AU - Cool, David. R. T1 - Metabolite Differentiation and Discovery Lab (MeDDL): A New Tool for Biomarker Discovery and Mass Spectral Visualization. JO - Analytical Chemistry JF - Analytical Chemistry Y1 - 2010/06//6/1/2010 VL - 82 IS - 11 M3 - Article SP - 4386 EP - 4395 SN - 00032700 AB - The goal of this work was to design and implement a prototype software tool for the visualization and analysis of small molecule metabolite GC-MS and LC-MS data for biomarker discovery. The key features of the Metabolite Differentiation and Discovery Lab (MeDDL) software platform include support for the manipulation of large data sets, tools to provide a multifaceted view of the individual experimental results, and a software architecture amenable to modification and addition of new algorithms and software components. The MeDDL tool, through its emphasis on visualization, provides unique opportunities by combining the following: easy use of both GC-MS and LC-MS data; use of both manufacturer specific data files as well as netCDF (network Common Data Form); preprocessing (peak registration and alignment in both time and mass); powerful visualization tools; and built in data analysis functionality. [ABSTRACT FROM AUTHOR] AB - Copyright of Analytical Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER software development KW - PROTOTYPES -- Software KW - VISUALIZATION KW - METABOLITES KW - BIOCHEMICAL markers KW - SOFTWARE N1 - Accession Number: 51285048; Grigsby, Claude C. 1,2 Rizki, Mateen M. 1 Tamburino, Louis A. 1 Pitsch, Rhonda L. 3 Shiyanov, Pavel A. 3 Cool, David. R. 2; Affiliation: 1: Counter Proliferation Branch, Biosciences and Protection Division, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, Ohio 45433-5707 2: Department of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, 3640 Colonel Glenn Highway, Dayton, Ohio 45435 3: Department of Computer Science and Engineering, Wright State University, 3640 Colonel Glenn Highway, Dayton, Ohio 45435; Source Info: 6/1/2010, Vol. 82 Issue 11, p4386; Subject Term: COMPUTER software development; Subject Term: PROTOTYPES -- Software; Subject Term: VISUALIZATION; Subject Term: METABOLITES; Subject Term: BIOCHEMICAL markers; Subject Term: SOFTWARE; NAICS/Industry Codes: 541511 Custom Computer Programming Services; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51285048&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gauthier, Michael L. AU - Petersen, Walter A. AU - Carey, Lawrence D. T1 - Cell mergers and their impact on cloud-to-ground lightning over the Houston area JO - Atmospheric Research JF - Atmospheric Research Y1 - 2010/06// VL - 96 IS - 4 M3 - Article SP - 626 EP - 632 SN - 01698095 AB - Abstract: A previous hypothesis advanced from observational studies such as METROMEX suggests that the intensity, frequency, and organization of cumulus convection may be impacted by the forcing of enhanced merger activity downstream of urban zones. A resulting corollary is that cities may exert an indirect anthropogenic “forcing” of parameters related to convection and associated phenomena such as lightning and precipitation. This paper investigates the urban-merger hypothesis by examining the role of convective cell mergers on the existence and persistence of the Houston lightning “anomaly”, a local maximum in cloud-to-ground (CG) lightning activity documented to exist over and east of Houston. Using eight summer seasons of peak columnar radar reflectivity, CG lightning data and a cell-tracking algorithm, a two-dimensional cell merger climatology is created for portions of Eastern Texas and Louisiana. Results from the tracking and analysis of over 3.8 million cells indicate that merger-driven enhancements in convection induce a positive response (O 46%) in ground flash densities throughout the domain, with areas of enhanced lightning typically being co-located with areas of enhanced merger activity. However, while mergers over the Houston area (relative to elsewhere in the domain) do result in more vigorous convective cells that produce larger CG flash densities, we find that CG lightning contributions due to mergers are distributed similarly throughout the domain. Hence while we demonstrate that cell mergers do greatly impact the production of lightning, the urban cell merger hypothesis does not uniquely explain the presence of a local lightning maximum near and downstream of Houston. [Copyright &y& Elsevier] AB - Copyright of Atmospheric Research is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHTNING KW - CELL adhesion KW - OBSERVATION (Scientific method) KW - METROMEX KW - PRECIPITATION (Meteorology) KW - CLIMATOLOGY KW - RADAR KW - HOUSTON (Tex.) KW - TEXAS KW - Cell merger KW - Lightning KW - Radar N1 - Accession Number: 50356995; Gauthier, Michael L. 1; Email Address: Michael.Gauthier@USAFA.edu Petersen, Walter A. 2 Carey, Lawrence D. 3; Affiliation: 1: United States Air Force Academy, Department of Physics, 2354 Fairchild Hall, Suite 2A29, USAF Academy, Colorado 80840, United States 2: NASA Marshall Space Flight Center, NSSTC/Earth Sciences Office VP-61, 320 Sparkman Drive, Huntsville, Alabama 35805, United States 3: Earth System Science Center, National Space Science and Technology Center, University of Alabama in Huntsville, 320 Sparkman Drive, Huntsville, Alabama 35805, United States; Source Info: Jun2010, Vol. 96 Issue 4, p626; Subject Term: LIGHTNING; Subject Term: CELL adhesion; Subject Term: OBSERVATION (Scientific method); Subject Term: METROMEX; Subject Term: PRECIPITATION (Meteorology); Subject Term: CLIMATOLOGY; Subject Term: RADAR; Subject Term: HOUSTON (Tex.); Subject Term: TEXAS; Author-Supplied Keyword: Cell merger; Author-Supplied Keyword: Lightning; Author-Supplied Keyword: Radar; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.atmosres.2010.02.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50356995&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zanov, Marat V. AU - Davison, Gerald C. T1 - A Conceptual and Empirical Review of 25 Years of Cognitive Assessment Using the Articulated Thoughts in Simulated Situations (ATSS) Think-Aloud Paradigm. JO - Cognitive Therapy & Research JF - Cognitive Therapy & Research Y1 - 2010/06// VL - 34 IS - 3 M3 - Article SP - 282 EP - 291 PB - Springer Science & Business Media B.V. SN - 01475916 AB - The present paper is a conceptual analysis and empirical review of research using the Articulated Thoughts in Simulated Situations (Davison et al. in Cogn Ther Res 7(1): 17–39, ) paradigm, a think-aloud cognitive assessment approach that is intended to capture ongoing thinking in an analogue, controlled environment of considerable interpersonal complexity. From an examination of over 25 years of the paradigm’s usage and in light of comments from scores of ATSS users, we have expanded upon and updated an earlier review (Davison et al. in J Consult Clin Psychol 65(6): 950–958, ). In addition to an empirical update, we describe the ATSS in greater methodological and psychometric detail, highlight its strengths and discuss its weaknesses, address some practical concerns, and comment on the evidence accumulated from the close to 70 studies employing the paradigm. We conclude that the ATSS paradigm is useful in assessing complex cognitions in a variety of investigator-controlled situations. [ABSTRACT FROM AUTHOR] AB - Copyright of Cognitive Therapy & Research is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PSYCHOMETRICS KW - PSYCHOLOGY -- Methodology KW - SIMULATION methods & models KW - COGNITION KW - PSYCHOLOGICAL tests KW - Articulated Thoughts in Simulated Situations KW - Articulated Thoughts in Simulated Situations ATSS KW - ATSS KW - Clinical assessment KW - Cognitive assessment KW - Think-aloud N1 - Accession Number: 49133270; Zanov, Marat V. 1; Email Address: dr.zanov@gmail.com Davison, Gerald C. 2; Email Address: gdaviso@usc.edu; Affiliation: 1: United States Air Force, Mental Health Clinic, Aviano, AB, Italy 2: Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089-0191, USA; Source Info: Jun2010, Vol. 34 Issue 3, p282; Subject Term: PSYCHOMETRICS; Subject Term: PSYCHOLOGY -- Methodology; Subject Term: SIMULATION methods & models; Subject Term: COGNITION; Subject Term: PSYCHOLOGICAL tests; Author-Supplied Keyword: Articulated Thoughts in Simulated Situations; Author-Supplied Keyword: Articulated Thoughts in Simulated Situations ATSS; Author-Supplied Keyword: ATSS; Author-Supplied Keyword: Clinical assessment; Author-Supplied Keyword: Cognitive assessment; Author-Supplied Keyword: Think-aloud; Number of Pages: 10p; Illustrations: 1 Diagram; Document Type: Article L3 - 10.1007/s10608-009-9271-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49133270&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Berger, Matt AU - Gustavo Nonato, Luis AU - Pascucci, Valerio AU - Silva, Cláudio T. T1 - Fiedler trees for multiscale surface analysis JO - Computers & Graphics JF - Computers & Graphics Y1 - 2010/06// VL - 34 IS - 3 M3 - Article SP - 272 EP - 281 SN - 00978493 AB - Abstract: In this work we introduce a new hierarchical surface decomposition method for multiscale analysis of surface meshes. In contrast to other multiresolution methods, our approach relies on spectral properties of the surface to build a binary hierarchical decomposition. Namely, we utilize the first nontrivial eigenfunction of the Laplace–Beltrami operator to recursively decompose the surface. For this reason we coin our surface decomposition the Fiedler tree. Using the Fiedler tree ensures a number of attractive properties, including: mesh-independent decomposition, well-formed and nearly equi-areal surface patches, and noise robustness. We show how the evenly distributed patches can be exploited for generating multiresolution high quality uniform meshes. Additionally, our decomposition permits a natural means for carrying out wavelet methods, resulting in an intuitive method for producing feature-sensitive meshes at multiple scales. [Copyright &y& Elsevier] AB - Copyright of Computers & Graphics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACES (Technology) -- Analysis KW - DECOMPOSITION (Mathematics) KW - ROBUST control KW - WAVELETS (Mathematics) KW - SENSITIVITY analysis KW - EIGENFUNCTIONS KW - Multiresolution shape analysis KW - Multiscale representation KW - Surface partition N1 - Accession Number: 50699891; Berger, Matt 1,2; Email Address: bergerm@cs.utah.edu Gustavo Nonato, Luis 1,3 Pascucci, Valerio 1 Silva, Cláudio T. 1; Affiliation: 1: Scientific Computing and Imaging Institute, University of Utah, USA 2: US Air Force Research Laboratory USA 3: Departamento de Matemática Aplicada e Estatística, Universidade de São Paulo, Brazil; Source Info: Jun2010, Vol. 34 Issue 3, p272; Subject Term: SURFACES (Technology) -- Analysis; Subject Term: DECOMPOSITION (Mathematics); Subject Term: ROBUST control; Subject Term: WAVELETS (Mathematics); Subject Term: SENSITIVITY analysis; Subject Term: EIGENFUNCTIONS; Author-Supplied Keyword: Multiresolution shape analysis; Author-Supplied Keyword: Multiscale representation; Author-Supplied Keyword: Surface partition; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.cag.2010.03.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50699891&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lin-Greenberg, Erik T1 - Dragon Boats: Assessing China's Anti-Piracy Operations in the Gulf of Aden. JO - Defense & Security Analysis JF - Defense & Security Analysis Y1 - 2010/06// VL - 26 IS - 2 M3 - Article SP - 213 EP - 230 SN - 14751798 AB - The article discusses the anti-piracy operations of the People's Liberation Army Navy (PLAN) of China in the Gulf of Aden off the coast of Somalia. It says that China launched the operations in December 2008 by deploying PLAN warships in the Gulf of Aden. However, the Chinese navy escorts merchant ships that requested for their service unlike the "military presence" approach of the North Atlantic Treaty Organization (NATO), the U.S., and the European Union that only patrols designated zones. KW - PIRACY (Maritime) -- Prevention KW - WARSHIPS KW - MERCHANT marine -- Safety measures KW - SECURITY measures KW - ADEN, Gulf of KW - CHINA KW - SOMALIA KW - CHINA. Zhongguo ren min jie fang jun. Hai jun N1 - Accession Number: 52444579; Lin-Greenberg, Erik 1; Affiliation: 1: United States Air Force, San Angelo, Texas, USA; Source Info: Jun2010, Vol. 26 Issue 2, p213; Subject Term: PIRACY (Maritime) -- Prevention; Subject Term: WARSHIPS; Subject Term: MERCHANT marine -- Safety measures; Subject Term: SECURITY measures; Subject Term: ADEN, Gulf of; Subject Term: CHINA; Subject Term: SOMALIA; Company/Entity: CHINA. Zhongguo ren min jie fang jun. Hai jun; NAICS/Industry Codes: 926120 Regulation and Administration of Transportation Programs; NAICS/Industry Codes: 336611 Ship Building and Repairing; Number of Pages: 18p; Document Type: Article L3 - 10.1080/14751798.2010.488867 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52444579&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, Kristopher T. T1 - Truncation-Error Reduction in 2D Cylindrical/Spherical Near-Field Scanning. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2010/06// VL - 58 IS - 6 M3 - Article SP - 2153 EP - 2158 SN - 0018926X AB - We introduce a near-field to far-field transformation for two-dimensional cylindrical/spherical scanning that significantly reduces angular-truncation errors. After examining the limitations of the traditional multipole-based expansion of truncated scan data, we consider an alternative expansion based on Slepian functions and show how far-field values can be extracted from the resulting expansion coefficients. We compare the performance and computational cost of the new transformation with those of the traditional one. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSFORMATIONS (Mathematics) KW - FUNCTIONS (Mathematics) KW - ASYMPTOTIC expansions KW - ERROR analysis (Mathematics) KW - COST analysis KW - Field expansion KW - near-field scanning KW - near-field to far-field transformation KW - Slepian functions KW - truncation error N1 - Accession Number: 51309301; Kim, Kristopher T. 1; Email Address: trout@ieee.org; Affiliation: 1: Electromagnetics Technology Division, Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731-2909 USA; Source Info: Jun2010, Vol. 58 Issue 6, p2153; Subject Term: TRANSFORMATIONS (Mathematics); Subject Term: FUNCTIONS (Mathematics); Subject Term: ASYMPTOTIC expansions; Subject Term: ERROR analysis (Mathematics); Subject Term: COST analysis; Author-Supplied Keyword: Field expansion; Author-Supplied Keyword: near-field scanning; Author-Supplied Keyword: near-field to far-field transformation; Author-Supplied Keyword: Slepian functions; Author-Supplied Keyword: truncation error; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TAP.2010.2046850 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51309301&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hoff, Brad W. AU - Franzi, Matthew AU - Gilgenbach, Ronald M. AU - Lau, Y. Y. T1 - Three-Dimensional Simulations of Magnetic Priming of a Relativistic Magnetron. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2010/06// VL - 38 IS - 6 M3 - Article SP - 1292 EP - 1301 SN - 00933813 AB - Using a hybrid approach, 3-D simulations of magnetic priming of a relativistic magnetron have been performed. The primed magnetic field values were calculated using a magnetostatics code (Magnum) and then imported into a particle-in-cell code (Magic PIC) and run for the case of a six-vane relativistic magnetron. The magnetically perturbative structures chosen for implementation in these simulations were sets of three highpermeability wires of various lengths, which would be placed within the cathode, the anode, or, in the combined case, both the cathode and anode. In the best-performing cathode-wire case (three 4-cm wires), magnetic priming was found to reduce the start-oscillation time of the magnetron to 50% that of the unprimed case. When wires were embedded in both the cathode and the anode, the best-performing case (4-cm cathode wires and 4-cm anode wires) was found to start oscillating at 30% of the start-oscillation time of the unprimed case. The cases of magnetically primed magnetrons were found to exhibit slightly reduced equilibrium power levels, compared with the unprimed case. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - MAGNETIC fields KW - MAGNETOSTATICS KW - CATHODES KW - ANODES KW - High power microwaves KW - magnetic priming KW - relativistic magnetron N1 - Accession Number: 51431495; Hoff, Brad W. 1,2 Franzi, Matthew 3,4 Gilgenbach, Ronald M. 4,5 Lau, Y. Y. 4,5; Affiliation: 1: Member, IEEE 2: High Power Microwave Division, Air Force Research Laboratory, Directed Energy Directorate, Kirtland Air Force Base, Albuquerque, NM 87117 USA 3: Student Member, IEEE 4: Plasma, Pulsed Power, and Microwave Laboratory, Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, MI 48109 USA 5: Fellow, IEEE; Source Info: Jun2010, Vol. 38 Issue 6, p1292; Subject Term: MAGNETRONS; Subject Term: MAGNETIC fields; Subject Term: MAGNETOSTATICS; Subject Term: CATHODES; Subject Term: ANODES; Author-Supplied Keyword: High power microwaves; Author-Supplied Keyword: magnetic priming; Author-Supplied Keyword: relativistic magnetron; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TPS.2010.2046186 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51431495&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shiffler, Don AU - Luginsland, John AU - French, David M. AU - Watrous, Jack T1 - A Cerenkov-like Maser Based on a Metamaterial Structure. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2010/06// VL - 38 IS - 6 M3 - Article SP - 1462 EP - 1465 SN - 00933813 AB - Microwave and radio frequency (RF) sources have been a subject of intense research for nearly 100 years, with the advent of High-Power Microwave (HPM) sources based upon intense relativistic electron beams emerging in the 1970s. These sources act to transform kinetic energy in an electron beam into radiation through the interaction of the electrons with some form of external circuit. One form of HPM device, the Cerenkov maser, consists of a hollow cylinder loaded with a dielectric material. The dielectric forms a slow-wave structure with which the relativistic beam can interact. This paper considers a new design approach and interaction mechanism for a Cerenkov maser. For the first time, a dielectric Cerenkov maser formed using microwave metamaterials in the form of a concentric ring structure was considered in the study. The authors proposed that metamaterials provide a practical new opportunity for vacuum electron devices, opening the means for new sources operating in the RF and microwave to THz regimes. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVES KW - RADIO frequency discharges KW - ELECTRON beams KW - METAMATERIALS KW - BANDWIDTHS KW - Electron devices KW - high power microwaves KW - metamaterials KW - vacuum electronic devices N1 - Accession Number: 51431499; Shiffler, Don 1 Luginsland, John 2 French, David M. 3 Watrous, Jack 2; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Wright-Patterson AFB, OH 45433-5543 USA 2: Air Force Office of Scientific Research, Arlington, VA 22203-1768 USA 3: Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, MI 48109-2104 USA; Source Info: Jun2010, Vol. 38 Issue 6, p1462; Subject Term: MICROWAVES; Subject Term: RADIO frequency discharges; Subject Term: ELECTRON beams; Subject Term: METAMATERIALS; Subject Term: BANDWIDTHS; Author-Supplied Keyword: Electron devices; Author-Supplied Keyword: high power microwaves; Author-Supplied Keyword: metamaterials; Author-Supplied Keyword: vacuum electronic devices; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TPS.2010.2046914 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51431499&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Trohalaki, Steven AU - Pachter, Ruth T1 - Mechanism of hydrogen production in [Fe–Fe]-hydrogenases: A quantum mechanics/molecular mechanics study JO - International Journal of Hydrogen Energy JF - International Journal of Hydrogen Energy Y1 - 2010/06// VL - 35 IS - 11 M3 - Article SP - 5318 EP - 5331 SN - 03603199 AB - Abstract: [Fe–Fe]-hydrogenases are a class of metalloenzymes that catalyze the production of H2 from two protons and two electrons. Crystal structures for [Fe–Fe]-hydrogenases found in two species –Clostridium pasteurianum (CpI) and Desulfovibrio desulfuricans (DdH) – show very similar active sites. However, the catalytic mechanism has not as yet been fully clarified. We employed density functional theory (DFT) within a QM/MM method to investigate proposed mechanisms of hydrogen production by DdH and CpI hydrogenases and their dependence on the protein environment of the active sites. For each mechanism investigated, we found only minor differences between the CpI and DdH hydrogenases in terms of the intermediate active site structures, although one mechanism follows a lower energy path for DdH hydrogenase, while the other mechanism follows a lower energy path for the CpI hydrogenase. We note, however, that the high activation energy we calculated for a step unique to one of the mechanisms might preclude it, making the energy-path comparison for the two mechanisms unnecessary. [Copyright &y& Elsevier] AB - Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROGEN production KW - QUANTUM theory KW - IRON KW - HYDROGENASE KW - MOLECULAR structure KW - BINDING sites (Biochemistry) KW - DENSITY functionals KW - All-iron hydrogenase KW - Hydrogen production KW - Hydrogenase mechanism KW - QM/MM N1 - Accession Number: 50933264; Trohalaki, Steven 1,2; Email Address: steven.trohalaki@wpafb.af.mil Pachter, Ruth 1; Email Address: ruth.pachter@wpafb.af.mil; Affiliation: 1: Materials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 2: General Dynamics Information Technology, Inc., 5100 Springfield Pike, Suite 509, Dayton, OH 45431-1264, USA; Source Info: Jun2010, Vol. 35 Issue 11, p5318; Subject Term: HYDROGEN production; Subject Term: QUANTUM theory; Subject Term: IRON; Subject Term: HYDROGENASE; Subject Term: MOLECULAR structure; Subject Term: BINDING sites (Biochemistry); Subject Term: DENSITY functionals; Author-Supplied Keyword: All-iron hydrogenase; Author-Supplied Keyword: Hydrogen production; Author-Supplied Keyword: Hydrogenase mechanism; Author-Supplied Keyword: QM/MM; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.ijhydene.2010.03.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50933264&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, Danhong AU - Gumbs, Godfrey T1 - Comparison of inelastic and quasielastic scattering effects on nonlinear electron transport in quantum wires. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/06// VL - 107 IS - 10 M3 - Article SP - 103710 EP - 103718 PB - American Institute of Physics SN - 00218979 AB - When impurity and phonon scattering coexist, the Boltzmann equation has been solved accurately for nonlinear electron transport in a quantum wire. Based on the calculated nonequilibrium distribution of electrons in momentum space, the scattering effects on both the nondifferential (for a fixed dc field) and differential (for a fixed temperature) mobilities of electrons as functions of temperature and dc field have been demonstrated. The nondifferential mobility of electrons is switched from a linearly increasing function of temperature to a paraboliclike temperature dependence as the quantum wire is tuned from an impurity-dominated system to a phonon-dominated one, as described by Fang et al. [Phys. Rev. B 78, 205403 (2008)]. In addition, a maximum has been obtained in the dc field dependence of the differential mobility of electrons. The low-field differential mobility is dominated by the impurity scattering, whereas the high-field differential mobility is limited by the phonon scattering as described by Hauser et al. [Semicond. Sci. Technol. 9, 951 (1994)]. Once a quantum wire is dominated by quasielastic scattering, the peak of the momentum-space distribution function becomes sharpened and both tails of the equilibrium electron distribution centered at the Fermi edges are raised by the dc field after a redistribution of the electrons is fulfilled in a symmetric way in the low-field regime. If a quantum wire is dominated by inelastic scattering, on the other hand, the peak of the momentum-space distribution function is unchanged while both shoulders centered at the Fermi edges shift leftward correspondingly with increasing dc field through an asymmetric redistribution of the electrons even in low-field regime as described by Wirner et al. [Phys. Rev. Lett. 70, 2609 (1993)]. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS research KW - SEMICONDUCTOR industry KW - ELECTRON transport KW - SCATTERING (Physics) KW - NANOWIRES KW - NANOSTRUCTURED materials KW - COLLISIONS (Physics) N1 - Accession Number: 51060885; Huang, Danhong 1 Gumbs, Godfrey 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, 2: Department of Physics and Astronomy, Hunter College of the City University of New York, 695 Park Avenue, New York 10065,; Source Info: Jun2010, Vol. 107 Issue 10, p103710; Subject Term: PHYSICS research; Subject Term: SEMICONDUCTOR industry; Subject Term: ELECTRON transport; Subject Term: SCATTERING (Physics); Subject Term: NANOWIRES; Subject Term: NANOSTRUCTURED materials; Subject Term: COLLISIONS (Physics); NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 8p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.3373413 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51060885&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jordan, Jennifer L. AU - Dattelbaum, Dana M. AU - Sutherland, Gerrit AU - Richards, D. Wayne AU - Sheffield, Stephen A. AU - Dick, Richard D. T1 - Shock equation of state of a multi-phase epoxy-based composite (Al–MnO2-epoxy). JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/06// VL - 107 IS - 10 M3 - Article SP - 103528-1 EP - 103528-10 PB - American Institute of Physics SN - 00218979 AB - There are several studies in the literature regarding the equation of state of alumina-epoxy composites. Although these single component systems interact in a complex manner with shock waves, the addition of a second metal or ceramic particulate can result in even more complex interactions. This paper presents the shock equation of state results on a multi-phase composite Al–MnO2-epoxy. Equation of state experiments were conducted using three different loading techniques—single stage light gas gun, two stage light gas gun, and explosive loading—with multiple diagnostic techniques. The Us-up relationship is shown to be linear, with deviations from linearity at low, and possibly high, pressures due to the behavior of the epoxy binder. The experimental equation of state data is compared to volume averaged and mesoscale mixture models. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM oxide KW - EPOXY compounds KW - EQUATIONS of state KW - SHOCK waves KW - PHYSICS research N1 - Accession Number: 51060784; Jordan, Jennifer L. 1 Dattelbaum, Dana M. 2 Sutherland, Gerrit 3 Richards, D. Wayne 1 Sheffield, Stephen A. 2 Dick, Richard D. 4; Affiliation: 1: Munitions Directorate, Air Force Research Laboratory (AFRL/RWMED), Eglin AFB, Florida 32542, 2: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, 3: Naval Surface Warfare Center, Indian Head, Maryland, 20640 4: Shocks Unlimited, Albuquerque, New Mexico,; Source Info: Jun2010, Vol. 107 Issue 10, p103528-1; Subject Term: ALUMINUM oxide; Subject Term: EPOXY compounds; Subject Term: EQUATIONS of state; Subject Term: SHOCK waves; Subject Term: PHYSICS research; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 10p; Illustrations: 1 Color Photograph, 1 Black and White Photograph, 3 Diagrams, 5 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.3357314 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51060784&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maroulis, G. AU - Bancewicz, T. AU - Champagne, B. AU - Buckingham, A.D. AU - Rau, I. AU - Krupka, O. AU - Grote, J.G. AU - Kajzar, F. AU - Sahraoui, B. T1 - Nonlinear optical properties of functionalized DNA. JO - Journal of Computational Methods in Sciences & Engineering JF - Journal of Computational Methods in Sciences & Engineering Y1 - 2010/06// VL - 10 IS - 3-6 M3 - Article SP - 531 EP - 543 SN - 14727978 AB - Third-order nonlinear optical properties of functionalized deoxyribonucleic acid (DNA) are studied by optical third harmonic generation at 1 0642 nm fundamental wavelength. The studies were performed on thin films of DNA-CTMA and DNA-CTMA doped with a charge transfer molecules DR1 and with a cobalt phthalocyanine. They show that DNA, similarly as synthetic polymers, can be used as matrix for highly active NLO chromophores. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Computational Methods in Sciences & Engineering is the property of IOS Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR optics KW - DNA KW - WAVELENGTHS KW - THIN films KW - CHARGE transfer KW - COBALT KW - PHTHALOCYANINES KW - POLYMERS KW - DNA-CTMA KW - doped DNA-CTMA KW - NLO susceptibility KW - third harmonic generation N1 - Accession Number: 58665097; Maroulis, G. Bancewicz, T. Champagne, B. Buckingham, A.D. Rau, I. 1 Krupka, O. 2 Grote, J.G. 3 Kajzar, F. 1,4 Sahraoui, B. 4; Affiliation: 1: POLITEHNICA University of Bucharest, Faculty of Applied Chemistry and Materials Science, Str. Polizu nr. 1, Bucharest, Romania 2: Kiev National Taras Shevchenko University, Macromolecular Chemistry Department, Volodymyrska street, 64, 01033 Kiev, Ukraine 3: Air Force Research Laboratory Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, 3005 Hobson Way, Dayton, OH 45433-7707, USA 4: Institute of sciences and molecular technologies of Angers MOLTECH Anjou - UMR CNRS 6200 Molecular interaction nonlinear optics and structuring MINOS, 2 Bd. Lavoisier, 49045, France; Source Info: 2010, Vol. 10 Issue 3-6, p531; Subject Term: NONLINEAR optics; Subject Term: DNA; Subject Term: WAVELENGTHS; Subject Term: THIN films; Subject Term: CHARGE transfer; Subject Term: COBALT; Subject Term: PHTHALOCYANINES; Subject Term: POLYMERS; Author-Supplied Keyword: DNA-CTMA; Author-Supplied Keyword: doped DNA-CTMA; Author-Supplied Keyword: NLO susceptibility; Author-Supplied Keyword: third harmonic generation; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 325130 Synthetic Dye and Pigment Manufacturing; Number of Pages: 13p; Illustrations: 3 Diagrams, 1 Chart, 6 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=58665097&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Slife, Brent D. AU - Burchfield, Colin AU - Hedges, Dawson T1 - Interpreting the "Biologization" of Psychology. JO - Journal of Mind & Behavior JF - Journal of Mind & Behavior Y1 - 2010///Summer/Autumn2010 VL - 31 IS - 3/4 M3 - Article SP - 165 EP - 177 SN - 02710137 AB - Behavior and cognition, once conceived as psychological or interpersonal in origin, are increasingly thought to arise from biology. After investigating the validity of this trend of thinking, the article attempts to interpret what it means to the discipline of psychology. Two main categories of interpretation are discussed. First, this trend could mean that biological factors ultimately underlie traditionally psychological explanations i.e., biological factors are a sufficient condition for understanding behavior and cognition. Second, this trend could indicate that biological factors are important, and perhaps even traditionally overlooked, but are not sufficient in themselves to explain human behavior and cognition i.e., biological factors are necessary conditions among other necessary conditions. The practical and methodological implications of each of these two interpretations are clarified, with a special focus on relevant research limitations. We conclude that the evidence does not bear out a sufficiency thesis and, instead, supports more convincingly a necessity understanding of these trends. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Mind & Behavior is the property of Institute of Mind & Behavior and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PSYCHOLOGY KW - NEUROSCIENCES KW - MATERIALISM KW - BEHAVIOR KW - COGNITION KW - materialism KW - neuroscience KW - trends in psychology N1 - Accession Number: 62130550; Slife, Brent D. 1; Email Address: brent_slife@byu.edu Burchfield, Colin 2 Hedges, Dawson 1; Affiliation: 1: Brigham Young University 2: United States Air Force; Source Info: Summer/Autumn2010, Vol. 31 Issue 3/4, p165; Subject Term: PSYCHOLOGY; Subject Term: NEUROSCIENCES; Subject Term: MATERIALISM; Subject Term: BEHAVIOR; Subject Term: COGNITION; Author-Supplied Keyword: materialism; Author-Supplied Keyword: neuroscience; Author-Supplied Keyword: trends in psychology; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62130550&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shaw, Tyler H. AU - Matthews, Gerald AU - Warm, Joel S. AU - Finomore, Victor S. AU - Silverman, Leanne AU - Costa, Paul T. T1 - Individual differences in vigilance: Personality, ability and states of stress JO - Journal of Research in Personality JF - Journal of Research in Personality Y1 - 2010/06// VL - 44 IS - 3 M3 - Article SP - 297 EP - 308 SN - 00926566 AB - Abstract: Vigilance is notoriously hard to predict from personality measures. This study adopted a new multivariate approach based on attentional resource theory. Measures were taken of the Five Factor Model (FFM), more narrowly-defined ‘cognitive–energetic’ traits, cognitive ability and stress and coping scales. Participants (210) performed one of two related high-workload visual vigilance tasks. Results showed that personality traits were weak predictors of correct detection rate, although extraversion was negatively correlated with performance. Ability, subjective task engagement and coping scales were more strongly associated with vigilance. However, both the FFM and cognitive–energetic factors related to subjective states experienced during performance. Data support multivariate approaches to the prediction of vigilance based on attentional resource theory. [Copyright &y& Elsevier] AB - Copyright of Journal of Research in Personality is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDIVIDUAL differences KW - VIGILANCE (Psychology) KW - PERSONALITY KW - ABILITY KW - STRESS (Psychology) KW - MULTIVARIATE analysis KW - COGNITIVE ability KW - EXTRAVERSION KW - Ability KW - Attentional resources KW - Extraversion KW - Five Factor Model KW - Mood KW - Stress KW - Sustained attention KW - Vigilance N1 - Accession Number: 51157940; Shaw, Tyler H. 1 Matthews, Gerald 2; Email Address: Gerald.Matthews@uc.edu Warm, Joel S. 3 Finomore, Victor S. 3 Silverman, Leanne 4 Costa, Paul T. 4; Affiliation: 1: Department of Psychology, George Mason University, United States 2: Department of Psychology, University of Cincinnati, Cincinnati 45221, United States 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, United States 4: Laboratory of Personality and Cognition, National Institute on Aging, United States; Source Info: Jun2010, Vol. 44 Issue 3, p297; Subject Term: INDIVIDUAL differences; Subject Term: VIGILANCE (Psychology); Subject Term: PERSONALITY; Subject Term: ABILITY; Subject Term: STRESS (Psychology); Subject Term: MULTIVARIATE analysis; Subject Term: COGNITIVE ability; Subject Term: EXTRAVERSION; Author-Supplied Keyword: Ability; Author-Supplied Keyword: Attentional resources; Author-Supplied Keyword: Extraversion; Author-Supplied Keyword: Five Factor Model; Author-Supplied Keyword: Mood; Author-Supplied Keyword: Stress; Author-Supplied Keyword: Sustained attention; Author-Supplied Keyword: Vigilance; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.jrp.2010.02.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51157940&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hamm, Geoff AU - Herrera, Geoffrey AU - Campion, Garry AU - Shinn, James AU - Coletta, Damon AU - Otto, Florian T1 - Book Reviews. JO - Journal of Strategic Studies JF - Journal of Strategic Studies Y1 - 2010/06// VL - 33 IS - 3 M3 - Book Review SP - 447 EP - 459 SN - 01402390 AB - The article reviews the books "Military Intelligence and the Arab Revolt: The First Modern Intelligence War," by Polly A. Mohs, "Nexus: Strategic Communications and American Security in World War I," by Jonathan Reed Winkler, and "Dowding and Churchill: The Dark Side of the Battle of Britain," by Jack Dixon. KW - NONFICTION KW - DIXON, Jack KW - WINKLER, Jonathan Reed KW - MOHS, Polly A. KW - MILITARY Intelligence & the Arab Revolt: The First Modern Intelligence War (Book) KW - NEXUS: Strategic Communications & American Security in World War I (Book) KW - DOWDING & Churchill: The Dark Side of the Battle of Britain (Book) N1 - Accession Number: 51417391; Hamm, Geoff 1 Herrera, Geoffrey 2 Campion, Garry 3 Shinn, James 4 Coletta, Damon 5 Otto, Florian 6; Affiliation: 1: University of Toronto, 2: Swarthmore College, 3: University of Northampton, 4: Princeton University, 5: United States Air Force Academy, 6: King's College London,; Source Info: Jun2010, Vol. 33 Issue 3, p447; Subject Term: NONFICTION; Reviews & Products: MILITARY Intelligence & the Arab Revolt: The First Modern Intelligence War (Book); Reviews & Products: NEXUS: Strategic Communications & American Security in World War I (Book); Reviews & Products: DOWDING & Churchill: The Dark Side of the Battle of Britain (Book); People: DIXON, Jack; People: WINKLER, Jonathan Reed; People: MOHS, Polly A.; Number of Pages: 13p; Document Type: Book Review L3 - 10.1080/01402391003765653 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51417391&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Messay, Temesguen AU - Hardie, Russell C. AU - Rogers, Steven K. T1 - A new computationally efficient CAD system for pulmonary nodule detection in CT imagery JO - Medical Image Analysis JF - Medical Image Analysis Y1 - 2010/06// VL - 14 IS - 3 M3 - Article SP - 390 EP - 406 SN - 13618415 AB - Abstract: Early detection of lung nodules is extremely important for the diagnosis and clinical management of lung cancer. In this paper, a novel computer aided detection (CAD) system for the detection of pulmonary nodules in thoracic computed tomography (CT) imagery is presented. The paper describes the architecture of the CAD system and assesses its performance on a publicly available database to serve as a benchmark for future research efforts. Training and tuning of all modules in our CAD system is done using a separate and independent dataset provided courtesy of the University of Texas Medical Branch (UTMB). The publicly available testing dataset is that created by the Lung Image Database Consortium (LIDC). The LIDC data used here is comprised of 84 CT scans containing 143 nodules ranging from 3 to 30mm in effective size that are manually segmented at least by one of the four radiologists. The CAD system uses a fully automated lung segmentation algorithm to define the boundaries of the lung regions. It combines intensity thresholding with morphological processing to detect and segment nodule candidates simultaneously. A set of 245 features is computed for each segmented nodule candidate. A sequential forward selection process is used to determine the optimum subset of features for two distinct classifiers, a Fisher Linear Discriminant (FLD) classifier and a quadratic classifier. A performance comparison between the two classifiers is presented, and based on this, the FLD classifier is selected for the CAD system. With an average of 517.5 nodule candidates per case/scan (517.5±72.9), the proposed front-end detector/segmentor is able to detect 92.8% of all the nodules in the LIDC/testing dataset (based on merged ground truth). The mean overlap between the nodule regions delineated by three or more radiologists and the ones segmented by the proposed segmentation algorithm is approximately 63%. Overall, with a specificity of 3 false positives (FPs) per case/patient on average, the CAD system is able to correctly identify 80.4% of the nodules (115/143) using 40 selected features. A 7-fold cross-validation performance analysis using the LIDC database only shows CAD sensitivity of 82.66% with an average of 3 FPs per CT scan/case. [Copyright &y& Elsevier] AB - Copyright of Medical Image Analysis is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LUNGS -- Cancer -- Diagnosis KW - TOMOGRAPHY KW - COMPUTER-assisted medical diagnosis KW - EARLY diagnosis KW - DATABASES KW - SENSITIVITY & specificity (Statistics) KW - ANODE09 KW - Computed tomography (CT) KW - Computer aided detection (CAD) KW - LIDC KW - Lung nodule N1 - Accession Number: 50261780; Messay, Temesguen 1; Email Address: messayte@notes.udayton.edu Hardie, Russell C. 1; Email Address: rhardie@udayton.edu Rogers, Steven K. 2; Email Address: srogers5@woh.rr.com; Affiliation: 1: Department of Electrical and Computer Engineering, University of Dayton, 300 College Park, Dayton, OH 45469-0232, United States 2: Air Force Research Laboratory, AFRL/RY Wright Patterson AFB, OH 45433, United States; Source Info: Jun2010, Vol. 14 Issue 3, p390; Subject Term: LUNGS -- Cancer -- Diagnosis; Subject Term: TOMOGRAPHY; Subject Term: COMPUTER-assisted medical diagnosis; Subject Term: EARLY diagnosis; Subject Term: DATABASES; Subject Term: SENSITIVITY & specificity (Statistics); Author-Supplied Keyword: ANODE09; Author-Supplied Keyword: Computed tomography (CT); Author-Supplied Keyword: Computer aided detection (CAD); Author-Supplied Keyword: LIDC; Author-Supplied Keyword: Lung nodule; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.media.2010.02.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50261780&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Moldoveanu, Mirela AU - Meghea, Aurelia AU - Popescu, Roxana AU - Grote, James G. AU - Kajzar, François AU - Rău, Ileana T1 - On the Stability and Degradation of DNA Based Thin Films. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2010/06// VL - 523 M3 - Article SP - 182 EP - 190 SN - 15421406 AB - In this paper recent studies showing the influence of light, temperature and chemical environments on the stability of pure and functionalized collagen and DNA based thin films are presented and discussed. The results are compared with similar studies performed on synthetic polymers. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOPOLYMERS KW - BIODEGRADATION KW - DNA KW - ANALYTICAL mechanics KW - PHOTODEGRADATION KW - EXTRACELLULAR matrix proteins KW - Biopolymers KW - chemical degradation KW - kinetics parameters KW - photodegradation N1 - Accession Number: 51095783; Moldoveanu, Mirela 1 Meghea, Aurelia 1 Popescu, Roxana 1 Grote, James G. 2 Kajzar, François 1 Rău, Ileana 1; Email Address: ileana.rau@upb.ro; Affiliation: 1: University Politehnica of Bucharest, Faculty of Applied Chemistry and Materials Sciences, Bucharest, Romania 2: US Air Force Research Laboratory, Materials & Manufacturing Directorate, AFRL/MLPS, Wright-Patterson Air Force Base, OH, U.S.A.; Source Info: 2010, Vol. 523, p182; Subject Term: BIOPOLYMERS; Subject Term: BIODEGRADATION; Subject Term: DNA; Subject Term: ANALYTICAL mechanics; Subject Term: PHOTODEGRADATION; Subject Term: EXTRACELLULAR matrix proteins; Author-Supplied Keyword: Biopolymers; Author-Supplied Keyword: chemical degradation; Author-Supplied Keyword: kinetics parameters; Author-Supplied Keyword: photodegradation; Number of Pages: 9p; Illustrations: 1 Diagram, 2 Charts, 6 Graphs; Document Type: Article L3 - 10.1080/15421401003723086 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51095783&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Prabhu, Badanavalu M. AU - Ali, Syed F. AU - Murdock, Richard C. AU - Hussain, Saber M. AU - Srivatsan, Malathi T1 - Copper nanoparticles exert size and concentration dependent toxicity on somatosensory neurons of rat. JO - Nanotoxicology JF - Nanotoxicology Y1 - 2010/06// VL - 4 IS - 2 M3 - Article SP - 150 EP - 160 SN - 17435390 AB - Metal nanoparticles, due to their unique properties and important applications in optical, magnetic, thermal, electrical, sensor devices and cosmetics, are beginning to be widely manufactured and used. This new and rapidly growing field of technology warrants a thorough examination of the material's bio-compatibility and safety. Ultra-small particles may adversely affect living cells and organisms since they can easily penetrate the body through skin contact, inhalation and ingestion. Retrograde transport of copper nanoparticles from nerve endings on the skin can reach the somatosensory neurons in dorsal root ganglion (DRG). Since copper nanoparticles have industrial and healthcare applications, we determined the concentration and size-dependant effects of their exposure on survival of DRG neurons of rat in cell culture. The neurons were exposed to copper nanoparticles of increasing concentrations (10–100 μM) and sizes (40, 60 and 80 nm) for 24 h. Light microscopy, histochemical staining for copper, lactate dehydrogenase (LDH) assay for cell death, and MTS [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] assay for cell viability were performed to measure the resultant toxicity and cell survival. DRG neurons exposed to copper nanoparticles displayed vacuoles and detachment of some neurons from the substratum. Neurons also exhibited disrupted neurite network. LDH and MTS assays revealed that exposure to copper nanoparticles had significant toxic effect with all the sizes tested when compared to unexposed control cultures. Further analysis of the results showed that copper nanoparticles of smaller size and higher concentration exerted the maximum toxic effects. Rubeanic acid staining showed intracellular deposition of copper. These results demonstrate that copper nanoparticles are toxic in a size- and concentration-dependent manner to DRG neurons. [ABSTRACT FROM AUTHOR] AB - Copyright of Nanotoxicology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - LACTATE dehydrogenase KW - DEHYDROGENASES KW - NEURONS KW - CELL death KW - cell death KW - Copper nanoparticles KW - cytotoxicity KW - DRG neurons KW - histochemistry KW - neurotoxicity N1 - Accession Number: 50797069; Prabhu, Badanavalu M. 1 Ali, Syed F. 2 Murdock, Richard C. 3 Hussain, Saber M. 3 Srivatsan, Malathi 1; Email Address: msrivatsan@astate.edu; Affiliation: 1: Department of Biological Sciences, Arkansas State University, Jonesboro, Arkansas. 2: Neurochemistry Laboratory, Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, Arkansas. 3: Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, Ohio, USA.; Source Info: Jun2010, Vol. 4 Issue 2, p150; Subject Term: NANOPARTICLES; Subject Term: LACTATE dehydrogenase; Subject Term: DEHYDROGENASES; Subject Term: NEURONS; Subject Term: CELL death; Author-Supplied Keyword: cell death; Author-Supplied Keyword: Copper nanoparticles; Author-Supplied Keyword: cytotoxicity; Author-Supplied Keyword: DRG neurons; Author-Supplied Keyword: histochemistry; Author-Supplied Keyword: neurotoxicity; Number of Pages: 11p; Document Type: Article L3 - 10.3109/17435390903337693 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50797069&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cariaga-Lo, Liza AU - Worthy Dawkins, Phyllis AU - Enger, Rolf AU - Schotter, Anne AU - Spence, Cynthia T1 - Supporting the Development of the Professoriate. JO - Peer Review JF - Peer Review Y1 - 2010///Summer2010 VL - 12 IS - 3 M3 - Article SP - 19 EP - 22 PB - Association of American Colleges & Universities SN - 15411389 AB - The article discusses the faculty support given by the higher education institutions through the development of policies and practices that equates institutional objectives with faculty needs. It explores the challenges that the institution and its faculty face to meet professional and personal growth. It highlights various approaches of colleges and universities to support the research and scholarship of their faculty while emphasizing the impact of work-life balance issues. It also examines the significance of mentoring and creating an inclusive community of scholars at various stages of the academic career sector. KW - UNIVERSITIES & colleges -- Faculty KW - HIGHER education KW - LEARNING & scholarship KW - EDUCATION -- Research KW - WORK-life balance KW - MENTORING in education KW - EDUCATORS KW - CAREER development KW - UNITED States N1 - Accession Number: 54710246; Cariaga-Lo, Liza 1 Worthy Dawkins, Phyllis 2 Enger, Rolf 3 Schotter, Anne 4 Spence, Cynthia 5; Affiliation: 1: Assistant provost for faculty development and diversity, Harvard University 2: Associate provost, Dillard University 3: Director of education, United States Air Force Academy 4: Professor of English and dean of the faculty, Wagner College 5: Associate professor of sociology, Spelman College, and director of UNCF /Mellon Programs; Source Info: Summer2010, Vol. 12 Issue 3, p19; Subject Term: UNIVERSITIES & colleges -- Faculty; Subject Term: HIGHER education; Subject Term: LEARNING & scholarship; Subject Term: EDUCATION -- Research; Subject Term: WORK-life balance; Subject Term: MENTORING in education; Subject Term: EDUCATORS; Subject Term: CAREER development; Subject Term: UNITED States; NAICS/Industry Codes: 624310 Vocational Rehabilitation Services; NAICS/Industry Codes: 611430 Professional and Management Development Training; NAICS/Industry Codes: 923110 Administration of Education Programs; NAICS/Industry Codes: 611710 Educational Support Services; NAICS/Industry Codes: 611699 All Other Miscellaneous Schools and Instruction; NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54710246&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hong Yan AU - Gaitonde, Datta T1 - Effect of thermally induced perturbation in supersonic boundary layers. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2010/06// VL - 22 IS - 6 M3 - Article SP - 064101 PB - American Institute of Physics SN - 10706631 AB - This paper investigates the mechanism of steady and unsteady thermal perturbation (also denoted as thermal bump) in a Mach 1.5 flat plate boundary layer. A high-fidelity upwind-biased third-order Roe scheme is used with the compressive van Leer harmonic limiter on a suitably refined mesh. The study consists of two parts. In the first part, the effects of the steady and pulsed thermal bumps are explored. It is shown that the finite-span thermal bumps generate streamwise vortices. With steady heating, the disturbance decays downstream. However, when the thermal bump is pulsed, vortex shedding is observed and the streamwise vortical disturbance grows with downstream distance, consistent with linear stability analysis. The integrated disturbance energy indicates that streamwise kinetic disturbance energy growth dominates over those associated with other two velocity and thermodynamic components. The second part of this paper explores the physical consequences of the nonlinear dynamics between the vortices produced by the pulsed bump and the compressible boundary layer. The resulting three-dimensional flow distortion generates hairpin structures which are aligned in the streamwise direction, suggesting that the transition process bears some similarity to K-type breakdown. The arrangement of these vortices is connected to the low-speed streaks observed in the evolving boundary layer. The shape factor, velocity, and Reynolds stress profiles suggest that the perturbed flow shows initiation of transition to turbulence, but remains transitional at the end of the plate. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUID dynamics KW - THERMAL conductivity KW - PERTURBATION (Mathematics) KW - HYDRODYNAMICS KW - THERMODYNAMICS KW - BOUNDARY layer (Aerodynamics) N1 - Accession Number: 51848397; Hong Yan 1 Gaitonde, Datta 2; Affiliation: 1: Department of Mechanical and Materials Engineering, Wright State University, Dayton, Ohio 45435, USA. 2: Air Vehicles Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA.; Source Info: Jun2010, Vol. 22 Issue 6, p064101; Subject Term: FLUID dynamics; Subject Term: THERMAL conductivity; Subject Term: PERTURBATION (Mathematics); Subject Term: HYDRODYNAMICS; Subject Term: THERMODYNAMICS; Subject Term: BOUNDARY layer (Aerodynamics); Number of Pages: 16p; Illustrations: 8 Diagrams, 1 Chart, 25 Graphs; Document Type: Article L3 - 10.1063/1.3432513 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51848397&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jasperse, John R. AU - Basu, Bamandas AU - Lund, Eric J. AU - Grossbard, Neil T1 - Anomalous momentum and energy transfer rates for electrostatic ion-cyclotron turbulence in downward auroral-current regions of the Earth’s magnetosphere. III. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2010/06// VL - 17 IS - 6 M3 - Article SP - 062903 PB - American Institute of Physics SN - 1070664X AB - Recently, a new multimoment fluid theory was developed for inhomogeneous, nonuniformly magnetized plasma in the guiding-center and gyrotropic approximation that includes the effect of electrostatic, turbulent, wave-particle interactions (see Jasperse et al. [Phys. Plasmas 13, 072903 (2006); ibid.13, 112902 (2006)]). In the present paper, which is intended as a sequel, it is concluded from FAST satellite data that the electrostatic ion-cyclotron turbulence that appears is due to the operation of an electron, bump-on-tail-driven ion-cyclotron instability for downward currents in the long-range potential region of the Earth’s magnetosphere. Approximate closed-form expressions for the anomalous momentum and energy transfer rates for the ion-cyclotron turbulence are obtained. The turbulent, inhomogeneous, nonuniformly magnetized, multimoment fluid theory given above, in the limit of a turbulent, homogeneous, uniformly magnetized, quasisteady plasma, yields the well-known formula for the anomalous resistivity given by Gary and Paul [Phys. Rev. Lett. 26, 1097 (1971)] and Tange and Ichimaru [J. Phys. Soc. Jpn. 36, 1437 (1974)]. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETOSPHERE KW - ENERGY transfer KW - TURBULENCE KW - CYCLOTRONS KW - MAGNETIC fields N1 - Accession Number: 51848459; Jasperse, John R. 1 Basu, Bamandas 1 Lund, Eric J. 2 Grossbard, Neil 3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731, USA. 2: Space Science Center, University of New Hampshire, Durham, New Hampshire 03824, USA. 3: Institute for Scientific Research, Boston College, Chestnut Hill, Massachusetts 02467, USA.; Source Info: Jun2010, Vol. 17 Issue 6, p062903; Subject Term: MAGNETOSPHERE; Subject Term: ENERGY transfer; Subject Term: TURBULENCE; Subject Term: CYCLOTRONS; Subject Term: MAGNETIC fields; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; Number of Pages: 19p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.3443711 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51848459&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jasperse, John R. AU - Basu, Bamandas AU - Lund, Eric J. AU - Grossbard, Neil T1 - The self-consistent parallel electric field due to electrostatic ion-cyclotron turbulence in downward auroral-current regions of the Earth’s magnetosphere. IV. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2010/06// VL - 17 IS - 6 M3 - Article SP - 062904 PB - American Institute of Physics SN - 1070664X AB - The physical processes that determine the self-consistent electric field (E∥) parallel to the magnetic field have been an unresolved problem in magnetospheric physics for over 40 years. Recently, a new multimoment fluid theory was developed for inhomogeneous, nonuniformly magnetized plasma in the guiding-center and gyrotropic approximation that includes the effect of electrostatic, turbulent, wave-particle interactions (see Jasperse et al. [Phys. Plasmas 13, 072903 (2006); ibid.13, 112902 (2006)]). In the present paper and its companion paper [Jasperse et al., Phys. Plasmas 17, 062903 (2010)], which are intended as sequels to the earlier work, a fundamental model for downward, magnetic field-aligned (Birkeland) currents for quasisteady conditions is presented. The model includes the production of electrostatic ion-cyclotron turbulence in the long-range potential region by an electron, bump-on-tail-driven ion-cyclotron instability. Anomalous momentum transfer (anomalous resistivity) by itself is found to produce a very small contribution to E∥; however, the presence of electrostatic, ion-cyclotron turbulence has a very large effect on the altitude dependence of the entire quasisteady solution. Anomalous energy transfer (anomalous heating and cooling) modifies the density, drift, and temperature altitude profiles and hence the generalized parallel-pressure gradients and mirror forces in the electron and ion momentum-balance equations. As a result, |E∥| is enhanced by nearly a factor of 40 compared to its value when turbulence is absent. The space-averaged potential increase associated with the strong double layer at the bottom of the downward-current sheet is estimated using the FAST satellite data and the multimoment fluid theory. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETOSPHERE KW - MAGNETIC fields KW - ENERGY transfer KW - ELECTRIC fields KW - PLASMA (Ionized gases) KW - TURBULENCE KW - CYCLOTRONS N1 - Accession Number: 51848458; Jasperse, John R. 1 Basu, Bamandas 1 Lund, Eric J. 2 Grossbard, Neil 3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731, USA. 2: Space Science Center, University of New Hampshire, Durham, New Hampshire 03824, USA. 3: Institute for Scientific Research, Boston College, Chestnut Hill, Massachusetts 02467, USA.; Source Info: Jun2010, Vol. 17 Issue 6, p062904; Subject Term: MAGNETOSPHERE; Subject Term: MAGNETIC fields; Subject Term: ENERGY transfer; Subject Term: ELECTRIC fields; Subject Term: PLASMA (Ionized gases); Subject Term: TURBULENCE; Subject Term: CYCLOTRONS; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; Number of Pages: 19p; Illustrations: 8 Graphs; Document Type: Article L3 - 10.1063/1.3443713 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51848458&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brown, Daniel L. AU - Gallimore, Alec D. T1 - Evaluation of ion collection area in Faraday probes. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2010/06// VL - 81 IS - 6 M3 - Article SP - 063504 PB - American Institute of Physics SN - 00346748 AB - A Faraday probe with three concentric rings was designed and fabricated to assess the effect of gap width and collector diameter in a systematic study of the diagnostic ion collection area. The nested Faraday probe consisted of two concentric collector rings and an outer guard ring, which enabled simultaneous current density measurements on the inner and outer collectors. Two versions of the outer collector were fabricated to create gaps of 0.5 and 1.5 mm between the rings. Distribution of current density in the plume of a low-power Hall thruster ion source was measured in azimuthal sweeps at constant radius from 8 to 20 thruster diameters downstream of the exit plane with variation in facility background pressure. A new analytical technique is proposed to account for ions collected in the gap between the Faraday probe collector and guard ring. This method is shown to exhibit excellent agreement between all nested Faraday probe configurations, and to reduce the magnitude of integrated ion beam current to levels consistent with Hall thruster performance analyses. The technique is further studied by varying the guard ring bias potential with a fixed collector bias potential, thereby controlling ion collection in the gap. Results are in agreement with predictions based on the proposed analytical technique. The method is applied to a past study comparing the measured ion current density profiles of two Faraday probe designs. These findings provide new insight into the nature of ion collection in Faraday probe diagnostics, and lead to improved accuracy with a significant reduction in measurement uncertainty. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FARADAY effect KW - ION bombardment KW - ION sources KW - ELECTRON emission KW - IONS KW - DENSITY N1 - Accession Number: 51848907; Brown, Daniel L. 1 Gallimore, Alec D. 2; Affiliation: 1: Spacecraft Branch, Propulsion Directorate, Air Force Research Laboratory, Edwards AFB, California 93524, USA 2: Department of Aerospace Engineering, Plasmadynamics and Electric Propulsion Laboratory, University of Michigan, Ann Arbor, Michigan 48109, USA; Source Info: Jun2010, Vol. 81 Issue 6, p063504; Subject Term: FARADAY effect; Subject Term: ION bombardment; Subject Term: ION sources; Subject Term: ELECTRON emission; Subject Term: IONS; Subject Term: DENSITY; Number of Pages: 11p; Illustrations: 8 Diagrams, 5 Charts, 7 Graphs; Document Type: Article L3 - 10.1063/1.3449541 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51848907&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mathur, V. AU - Vangala, S. R. AU - Qian, X. AU - Goodhue, W. D. AU - Haji-Saeed, B. AU - Khoury, J. T1 - An all optically driven integrated deformable mirror device. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/05/24/ VL - 96 IS - 21 M3 - Article SP - 211103 PB - American Institute of Physics SN - 00036951 AB - We demonstrate a technique for actuating micromirrors vertically cascaded on wafer fused GaAs-GaP photodiodes. Unlike traditional actuation schemes, the electrostatic drive of the individual capacitive actuators is addressed optically in this device. Vertical mirror displacements of up to 500 nm were observed using interferometry while addressing the photodetectors with a 5 mW optical signal. Microlenses were used to address a 900 pixel device with patterned conductive pillars and thin film load resistors for each actuator-detector element. This approach can enable realization of faster and denser adaptive optics wave front corrector arrays. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM arsenide KW - PHOTODIODES KW - SEMICONDUCTOR diodes KW - GALLIUM compounds KW - ACTUATORS KW - ELECTROSTATICS N1 - Accession Number: 51059333; Mathur, V. 1; Email Address: vaibhavdeniro@gmail.com Vangala, S. R. 1 Qian, X. 1 Goodhue, W. D. 1 Haji-Saeed, B. 2 Khoury, J. 2; Affiliation: 1: Department of Physics and Applied Physics, Photonics Center, University of Massachusetts, Lowell, Massachusetts 01854, USA 2: Air Force Research Laboratory/Sensors Directorate, Hanscom Air Force Base, Massachusetts 01731, USA; Source Info: 5/24/2010, Vol. 96 Issue 21, p211103; Subject Term: GALLIUM arsenide; Subject Term: PHOTODIODES; Subject Term: SEMICONDUCTOR diodes; Subject Term: GALLIUM compounds; Subject Term: ACTUATORS; Subject Term: ELECTROSTATICS; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 3p; Illustrations: 1 Black and White Photograph, 4 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.3430568 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51059333&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hung, K. M. AU - Kuo, J.-Y. AU - Hong, C. C. AU - Cheng, H. H. AU - Sun, G. AU - Soref, R. A. T1 - Carrier dynamics of terahertz emission based on strained SiGe/Si single quantum well. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/05/24/ VL - 96 IS - 21 M3 - Article SP - 213502 PB - American Institute of Physics SN - 00036951 AB - We report analysis of the carrier distribution during terahertz emission process with carrier–phonon interaction based on p-doped strained SiGe/Si single quantum-well. The results of this analysis show that a considerable number of carriers can penetrate the phonon wall to become “hot” carriers on an approximately picosecond timescale. These hot carriers relax after the removal of the applied voltage, generating a “second” emission in the measurement. This investigation provides an understanding of the carrier dynamics of terahertz emission and has an implication for the design of semiconductor terahertz emitters. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM wells KW - PHONONS KW - HOT carriers KW - SEMICONDUCTORS KW - ELECTRIC potential KW - ELECTRIC power production N1 - Accession Number: 51059319; Hung, K. M. 1 Kuo, J.-Y. 1 Hong, C. C. 2 Cheng, H. H. 2; Email Address: hhcheng@ntu.edu.tw Sun, G. 3 Soref, R. A. 4; Affiliation: 1: Department of Electronics Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 807, Taiwan 2: Center for Condensed Matter Sciences and Graduate Institute of Electronics Engineering, National Taiwan University, Taipei 106, Taiwan 3: Department of Physics, University of Massachusetts-Boston, Boston, Massachusetts 02125, USA 4: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731, USA; Source Info: 5/24/2010, Vol. 96 Issue 21, p213502; Subject Term: QUANTUM wells; Subject Term: PHONONS; Subject Term: HOT carriers; Subject Term: SEMICONDUCTORS; Subject Term: ELECTRIC potential; Subject Term: ELECTRIC power production; NAICS/Industry Codes: 221112 Fossil Fuel Electric Power Generation; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 2 Diagrams, 1 Graph; Document Type: Article L3 - 10.1063/1.3432075 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51059319&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Viggiano, Albert A. AU - Friedman, Jeffrey F. AU - Shuman, Nicholas S. AU - Miller, Thomas M. AU - Schaffer, Linda C. AU - Troe, Jürgen T1 - Experimental and modeling study of thermal rate coefficients and cross sections for electron attachment to C60. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2010/05/21/ VL - 132 IS - 19 M3 - Article SP - 194307 PB - American Institute of Physics SN - 00219606 AB - Thermal electron attachment to C60 has been studied by relative rate measurements in a flowing afterglow Langmuir probe apparatus. The rate coefficients of the attachment k1 are shown to be close to 10-6 cm3 s-1 with a small negative temperature coefficient. These results supersede measurements from the 1990s which led to much smaller values of k1 with a large positive temperature coefficient suggesting an activation barrier. Theoretical modeling of k1 in terms of generalized Vogt–Wannier capture theory shows that k1 now looks more consistent with measurements of absolute attachment cross sections σat than before. The comparison of capture theory and experimental rate or cross section data leads to empirical correction factors, accounting for “intramolecular vibrational relaxation” or “electron-phonon coupling,” which reduce k1 below the capture results and which, on a partial wave-selected level, decrease with increasing electron energy. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - TEMPERATURE KW - THERMAL properties KW - COUPLINGS (Gearing) KW - THERMODYNAMICS N1 - Accession Number: 50827665; Viggiano, Albert A. 1 Friedman, Jeffrey F. 2 Shuman, Nicholas S. 1 Miller, Thomas M. 1,3 Schaffer, Linda C. 1 Troe, Jürgen 4; Email Address: shoff@gwdg.de; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Bedford, Massachusetts 01731-3010, USA. 2: Department of Physics, University of Puerto Rico, Mayaguez, Puerto Rico 00681-9016. 3: Institute for Scientific Research, Boston College. 4: Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany.; Source Info: 5/21/2010, Vol. 132 Issue 19, p194307; Subject Term: ELECTRONS; Subject Term: TEMPERATURE; Subject Term: THERMAL properties; Subject Term: COUPLINGS (Gearing); Subject Term: THERMODYNAMICS; NAICS/Industry Codes: 333613 Mechanical Power Transmission Equipment Manufacturing; NAICS/Industry Codes: 333619 Other engine and power transmission equipment manufacturing; Number of Pages: 8p; Illustrations: 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.3427530 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50827665&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Christ, John A. AU - Ramsburg, C. Andrew AU - Pennell, Kurt D. AU - Abriola, Linda M. T1 - Predicting DNAPL mass discharge from pool-dominated source zones JO - Journal of Contaminant Hydrology JF - Journal of Contaminant Hydrology Y1 - 2010/05/20/ VL - 114 IS - 1-4 M3 - Article SP - 18 EP - 34 SN - 01697722 AB - Abstract: Models that link simplified descriptions of dense non-aqueous phase liquid (DNAPL) source zone architecture with predictions of mass flux can be effective screening tools for evaluation of source zone management strategies. Recent efforts have focused on the development and implementation of upscaled models to approximate the relationship between mass removal and flux-averaged, down-gradient contaminant concentration (or mass flux) reduction. The efficacy of these methods has been demonstrated for ganglia-dominated source zones. This work extends these methods to source zones dominated by high-saturation DNAPL pools. An existing upscaled mass transfer model was modified to reproduce dissolution behavior in pool-dominated scenarios by employing a two-domain (ganglia and pools) representation of the source zone. The two-domain upscaled model is parameterized using the initial fraction of the source zone that exists as pool regions, the initial fraction of contaminant eluting from these pool regions, and the flux-averaged down-gradient contaminant concentration. Comparisons of model predictions with a series of three-dimensional source zone numerical simulations and data from two-dimensional aquifer cell experiments demonstrate the ability of the model to predict DNAPL dissolution from ganglia- and pool-dominated source zones for all levels of mass recovery. [Copyright &y& Elsevier] AB - Copyright of Journal of Contaminant Hydrology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PREDICTION theory KW - PHASE rule & equilibrium KW - MASS transfer KW - LIQUIDS KW - GANGLIA KW - CHEMICAL reduction KW - CONTAMINATION (Technology) KW - COMPUTER simulation KW - DNAPL KW - Modeling KW - Remediation KW - Source zone KW - Upscaled N1 - Accession Number: 50356951; Christ, John A. 1; Email Address: john.christ@usafa.edu Ramsburg, C. Andrew 2 Pennell, Kurt D. 2 Abriola, Linda M. 2; Affiliation: 1: Department of Civil and Environmental Engineering, US Air Force Academy, Colorado Springs, CO, USA 2: Department of Civil and Environmental Engineering, Tufts University, Medford, MA, USA; Source Info: May2010, Vol. 114 Issue 1-4, p18; Subject Term: PREDICTION theory; Subject Term: PHASE rule & equilibrium; Subject Term: MASS transfer; Subject Term: LIQUIDS; Subject Term: GANGLIA; Subject Term: CHEMICAL reduction; Subject Term: CONTAMINATION (Technology); Subject Term: COMPUTER simulation; Author-Supplied Keyword: DNAPL; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Remediation; Author-Supplied Keyword: Source zone; Author-Supplied Keyword: Upscaled; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.jconhyd.2010.02.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50356951&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stone, D. AU - Liu, J. AU - Singh, D.P. AU - Muratore, C. AU - Voevodin, A.A. AU - Mishra, S. AU - Rebholz, C. AU - Ge, Q. AU - Aouadi, S.M. T1 - Layered atomic structures of double oxides for low shear strength at high temperatures JO - Scripta Materialia JF - Scripta Materialia Y1 - 2010/05/15/ VL - 62 IS - 10 M3 - Article SP - 735 EP - 738 SN - 13596462 AB - Double oxide phases combining a transition metal and a noble metal have recently become a subject of investigation as solid lubricant materials for high-temperature tribological applications. Here, we study the changes in chemistry and crystal structure of silver molybdate (Ag2Mo2O7) and silver tungstate (Ag2WO4) thin films and powders from 25 to 600°C. We show, using ab initio molecular dynamics, high-temperature X-ray diffraction, high-temperature Raman spectroscopy and differential scanning calorimetry in combination with sliding tests, that the layered atomic structure of silver molybdate facilitates sliding, resulting in a low coefficient of friction (<0.2) from 300 to 500°C. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATOMIC structure KW - TRANSITION metal oxides KW - PRECIOUS metals KW - SHEAR (Mechanics) KW - HIGH temperatures KW - LUBRICATION & lubricants KW - THIN films KW - RAMAN spectroscopy KW - Ab initio calculations KW - Crystal structure KW - Friction KW - Oxides KW - Raman spectroscopy N1 - Accession Number: 48628752; Stone, D. 1 Liu, J. 2 Singh, D.P. 1 Muratore, C. 3 Voevodin, A.A. 3 Mishra, S. 4 Rebholz, C. 5 Ge, Q. 2 Aouadi, S.M. 1; Email Address: saouadi@physics.siu.edu; Affiliation: 1: Department of Physics, Southern Illinois University, Carbondale, IL 62901, USA 2: Department of Chemistry, Southern Illinois University, Carbondale, IL 62901, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 4: Department of Physics, University of Memphis, Memphis, TN 38152, USA 5: Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678 Nicosia, Cyprus; Source Info: May2010, Vol. 62 Issue 10, p735; Subject Term: ATOMIC structure; Subject Term: TRANSITION metal oxides; Subject Term: PRECIOUS metals; Subject Term: SHEAR (Mechanics); Subject Term: HIGH temperatures; Subject Term: LUBRICATION & lubricants; Subject Term: THIN films; Subject Term: RAMAN spectroscopy; Author-Supplied Keyword: Ab initio calculations; Author-Supplied Keyword: Crystal structure; Author-Supplied Keyword: Friction; Author-Supplied Keyword: Oxides; Author-Supplied Keyword: Raman spectroscopy; NAICS/Industry Codes: 324191 Petroleum Lubricating Oil and Grease Manufacturing; NAICS/Industry Codes: 418920 Mineral, ore and precious metal merchant wholesalers; NAICS/Industry Codes: 212221 Gold Ore Mining; NAICS/Industry Codes: 212220 Gold and silver ore mining; NAICS/Industry Codes: 423940 Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2010.02.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48628752&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Seungyong Jung AU - Suchalkin, Sergey AU - Kipshidze, Gela AU - Westerfeld, David AU - Golden, Eric AU - Snyder, Donald AU - Belenky, Gregory T1 - Dual wavelength GaSb based type I quantum well mid-infrared light emitting diodes. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/05/10/ VL - 96 IS - 19 M3 - Article SP - 191102 PB - American Institute of Physics SN - 00036951 AB - We have designed and developed dual wavelength type I quantum well light emitting diodes (LEDs) operating at 2 μm and 3–3.4 μm wavelengths with independently controlled intensities. The room temperature quasicontinuous wave output power was 2.8 mW at 2 μm and 0.14 mW at 3 μm. The design of the dual wavelength structure allows for monolithically integrating LED pixels with different wavelengths opening the way for the fabrication of multiwavelength LED arrays for multispectral and hyperspectral imaging applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVELENGTHS KW - LIGHT emitting diodes KW - QUANTUM wells KW - INFRARED radiation KW - ELECTROLUMINESCENT devices KW - LIGHT sources N1 - Accession Number: 50510816; Seungyong Jung 1 Suchalkin, Sergey 2; Email Address: suchal@ece.sunysb.edu Kipshidze, Gela 1 Westerfeld, David 2 Golden, Eric 3 Snyder, Donald 3 Belenky, Gregory 1; Affiliation: 1: State University of New York at Stony Brook, Stony Brook, New York 11794, USA 2: Power Photonic Corporation, Stony Brook, New York 11790, USA 3: Air Force Research Laboratory, Eglin Air Force Base, Florida 32542, USA; Source Info: 5/10/2010, Vol. 96 Issue 19, p191102; Subject Term: WAVELENGTHS; Subject Term: LIGHT emitting diodes; Subject Term: QUANTUM wells; Subject Term: INFRARED radiation; Subject Term: ELECTROLUMINESCENT devices; Subject Term: LIGHT sources; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 3p; Illustrations: 2 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.3425899 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50510816&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Madison, J. AU - Spowart, J. AU - Rowenhorst, D. AU - Aagesen, L.K. AU - Thornton, K. AU - Pollock, T.M. T1 - Modeling fluid flow in three-dimensional single crystal dendritic structures JO - Acta Materialia JF - Acta Materialia Y1 - 2010/05// VL - 58 IS - 8 M3 - Article SP - 2864 EP - 2875 SN - 13596454 AB - Abstract: Convection during directional solidification can cause defects such as freckles and misoriented grains. To gain a better understanding of conditions associated with the onset of convective instabilities, flow was investigated using three-dimensional (3D) computational fluid dynamics simulations in an experimentally obtained dendritic network. A serial-sectioned, 3D data set of directionally solidified nickel-base superalloy measuring 2.3×2.3×1.5mm was used to determine the permeability for flow parallel and normal to the solidification direction as a function of solid fraction (fS ). Anisotropy of permeability varies significantly from 0.4< fS <0.6. High flow velocity channels exhibit spacings commensurate with primary dendrite arms at the base of the mushy zone but rapidly increase by a factor of three to four towards dendrite tips. Permeability is strongly dependent on interfacial surface area, which reaches a maximum at fS =0.65. Results from the 3D simulation are also compared with empirical permeability models, and the microstructural origins of departures from these models are discussed. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DENDRITIC crystals KW - MICROSTRUCTURE KW - CRYSTAL defects KW - SOLIDIFICATION KW - NICKEL alloys KW - COMPUTATIONAL fluid dynamics KW - CRYSTAL growth KW - HEAT resistant alloys KW - Dendritic growth KW - Directional solidification KW - Modeling KW - Nickel alloys KW - Permeability N1 - Accession Number: 48731219; Madison, J. 1; Email Address: jonnymad@umich.edu Spowart, J. 2 Rowenhorst, D. 3 Aagesen, L.K. 4 Thornton, K. 1 Pollock, T.M. 1; Affiliation: 1: Department of Materials Science & Engineering, University of Michigan, Ann Arbor, MI 48109, USA 2: Air Force Research Laboratory/RXLMD, Wright Patterson AFB, OH 45433, USA 3: Naval Research Laboratory, Washington, DC 20375, USA 4: Department of Materials Science & Engineering, Northwestern University, Evanston, IL 60208, USA; Source Info: May2010, Vol. 58 Issue 8, p2864; Subject Term: DENDRITIC crystals; Subject Term: MICROSTRUCTURE; Subject Term: CRYSTAL defects; Subject Term: SOLIDIFICATION; Subject Term: NICKEL alloys; Subject Term: COMPUTATIONAL fluid dynamics; Subject Term: CRYSTAL growth; Subject Term: HEAT resistant alloys; Author-Supplied Keyword: Dendritic growth; Author-Supplied Keyword: Directional solidification; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Nickel alloys; Author-Supplied Keyword: Permeability; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.actamat.2010.01.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48731219&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Trei, Jill S. AU - Johns, Natalie M. AU - Garner, Jason L. AU - Noel, Lawrence B. AU - Ortman, Brian V. AU - Ensz, Kari L. AU - Johns, Matthew C. AU - Bunning, Michel L. AU - Gaydos, Joel C. T1 - Spread of Adenovirus to Geographically Dispersed Military Installations, May-October 2007. JO - Emerging Infectious Diseases JF - Emerging Infectious Diseases Y1 - 2010/05// VL - 16 IS - 5 M3 - Article SP - 769 EP - 775 PB - Centers for Disease Control & Prevention (CDC) SN - 10806040 AB - In mid-May 2007, a respiratory disease outbreak associated with adenovirus, serotype B14 (Ad14), was recognized at a large military basic training facility in Texas. The affected population was highly mobile; after the 6-week basic training course, trainees immediately dispersed to advanced training sites worldwide. Accordingly, enhanced surveillance and control efforts were instituted at sites receiving the most trainees. Specimens from patients with pneumonia or febrile respiratory illness were tested for respiratory pathogens by using cultures and reverse transcription-PCR During May through October 2007, a total of 959 specimens were collected from 21 sites; 43.1% were adenovirus positive; the Ad14 serotype accounted for 95.3% of adenovirus isolates. Ad14 was identified at 8 sites in California, Florida, Mississippi, Texas, and South Korea. Ad14 spread readily to secondary sites after the initial outbreak. Military and civilian planners must consider how best to control the spread of infectious respiratory diseases in highly mobile populations traveling between diverse geographic locations. [ABSTRACT FROM AUTHOR] AB - Copyright of Emerging Infectious Diseases is the property of Centers for Disease Control & Prevention (CDC) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADENOVIRUSES KW - ADENOVIRUS diseases KW - AMERICAN military bases KW - RESPIRATORY diseases KW - DNA viruses KW - TEXAS N1 - Accession Number: 51382861; Trei, Jill S. 1 Johns, Natalie M. 1; Email Address: natalie.johns@pentagon.af.mil Garner, Jason L. 1 Noel, Lawrence B. 2 Ortman, Brian V. 2 Ensz, Kari L. 3 Johns, Matthew C. 1 Bunning, Michel L. 4 Gaydos, Joel C. 5; Affiliation: 1: United States Air Force School of Aerospace Medicine, San Antonio, Texas, USA 2: Air Education and Training Command. San Antonio 3: Sheppard Air Force Base, Wichita Falls, Texas, USA 4: Lackland Air Force Base, San Antonio 5: Armed Forces Health Surveillance Center, Silver Spring, Maryland, USA; Source Info: May2010, Vol. 16 Issue 5, p769; Subject Term: ADENOVIRUSES; Subject Term: ADENOVIRUS diseases; Subject Term: AMERICAN military bases; Subject Term: RESPIRATORY diseases; Subject Term: DNA viruses; Subject Term: TEXAS; NAICS/Industry Codes: 928110 National Security; Number of Pages: 7p; Illustrations: 1 Diagram, 2 Charts, 1 Graph, 1 Map; Document Type: Article L3 - 10.3201/eid1605.091633 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51382861&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Perlovsky, Leonid I. T1 - Neural Mechanisms of the Mind, Aristotle, Zadeh, and fMRI. JO - IEEE Transactions on Neural Networks JF - IEEE Transactions on Neural Networks Y1 - 2010/05// VL - 21 IS - 5 M3 - Article SP - 718 EP - 733 SN - 10459227 AB - Processes in the mind: perception, cognition, concepts, instincts, emotions, and higher cognitive abilities for abstract thinking, beautiful music are considered here within a neural modeling fields (NMFs) paradigm. Its fundamental mathematical mechanism is a process "from vague-fuzzy to crisp," called dynamic logic (DL). This paper discusses why this paradigm is necessary mathematically, and relates it to a psychological description of the mind. Surprisingly, the process from "vague to crisp" corresponds to Aristotelian understanding of mental functioning. Recent functional magnetic resonance imaging (fMRI) measurements confirmed this process in neural mechanisms of perception. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Neural Networks is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC resonance imaging KW - COMPUTATIONAL complexity KW - FUZZY logic KW - EMOTIONS (Psychology) & cognition KW - DIAGNOSTIC imaging KW - EMOTIONS (Psychology) KW - Brain imaging KW - computational complexity KW - dynamic logic KW - emotions KW - fuzzy logic KW - Gödel KW - imagination KW - instincts KW - intelligence KW - intuition KW - knowledge instinct KW - logic KW - mind KW - modeling fields KW - neural N1 - Accession Number: 50796347; Perlovsky, Leonid I. 1,2,3; Email Address: Leonid.Perlovsky@hanscom.af.mil; Affiliation: 1: Senior Member, IEEE 2: Harvard University, Cambridge, MA 02138 USA 3: U.S. Air Force Research Laboratory, Sensors Directorate, Hanscom, MA 01731 USA; Source Info: May2010, Vol. 21 Issue 5, p718; Subject Term: MAGNETIC resonance imaging; Subject Term: COMPUTATIONAL complexity; Subject Term: FUZZY logic; Subject Term: EMOTIONS (Psychology) & cognition; Subject Term: DIAGNOSTIC imaging; Subject Term: EMOTIONS (Psychology); Author-Supplied Keyword: Brain imaging; Author-Supplied Keyword: computational complexity; Author-Supplied Keyword: dynamic logic; Author-Supplied Keyword: emotions; Author-Supplied Keyword: fuzzy logic; Author-Supplied Keyword: Gödel; Author-Supplied Keyword: imagination; Author-Supplied Keyword: instincts; Author-Supplied Keyword: intelligence; Author-Supplied Keyword: intuition; Author-Supplied Keyword: knowledge instinct; Author-Supplied Keyword: logic; Author-Supplied Keyword: mind; Author-Supplied Keyword: modeling fields; Author-Supplied Keyword: neural; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 621512 Diagnostic Imaging Centers; Number of Pages: 16p; Document Type: Article L3 - 10.1109/TNN.2010.2041250 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50796347&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lei Ding AU - Melodia, Tommaso AU - Batalama, Stella N. AU - Matyjas, John D. AU - Medley, Michael J. T1 - Cross-Layer Routing and Dynamic Spectrum Allocation in Cognitive Radio Ad Hoc Networks. JO - IEEE Transactions on Vehicular Technology JF - IEEE Transactions on Vehicular Technology Y1 - 2010/05// VL - 59 IS - 4 M3 - Article SP - 1969 EP - 1979 SN - 00189545 AB - Throughput maximization is one of the main challenges in cognitive radio ad hoc networks, where the availability of local spectrum resources may change from time to time and hop by hop. For this reason, a cross-layer opportunistic spectrum access and dynamic routing algorithm for cognitive radio networks is proposed, which is called the routing and dynamic spectrumal-location (ROSA) algorithm. Through local control actions, ROSA aims to maximize the network throughput by performing joint routing, dynamic spectrum allocation, scheduling, and transmit power control. Specifically, the algorithm dynamically allocates spectrum resources to maximize the capacity of links without generating harmful interference to other users while guaranteeing a bounded bit error rate (BER) for the receiver. In addition, the algorithm aims to maximize the weighted sum of differential backlogs to stabilize the system by giving priority to higher capacity links with a high differential backlog. The proposed algorithm is distributed, computationally efficient, and has bounded BER guarantees. ROSA is shown through numerical model-based evaluation and discrete-event packet-level simulations to outperform baseline solutions, leading to a high throughput, low delay, and fair bandwidth allocation. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Vehicular Technology is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO networks KW - AD hoc networks (Computer networks) KW - COMPUTER networks KW - WIRELESS communication systems KW - VEHICULAR ad hoc networks (Computer networks) KW - RESEARCH KW - Ad hoc networks KW - cognitive radio networks KW - cross-layer design KW - dynamic spectrum allocation KW - routing N1 - Accession Number: 50995471; Lei Ding 1; Email Address: leiding@buffalo.edu Melodia, Tommaso 1,2; Email Address: tmelodia@buffalo.edu Batalama, Stella N. 1,2; Email Address: batalama@buffalo.edu Matyjas, John D. 3,4; Email Address: john.matyjas@rl.af.mil Medley, Michael J. 3,4,5; Email Address: michael.medley@rl.af.mil; Affiliation: 1: Department of Electrical Engineering, The State University of New York at Buffalo, Buffalo, NY 14260 USA 2: Member, IEEE 3: U.S. Air Force Research Laboratory, Rome, NY 13441 USA 4: State University of New York Institute of Technology, Utica, NY 13502 USA 5: Senior Member, IEEE; Source Info: May2010, Vol. 59 Issue 4, p1969; Subject Term: RADIO networks; Subject Term: AD hoc networks (Computer networks); Subject Term: COMPUTER networks; Subject Term: WIRELESS communication systems; Subject Term: VEHICULAR ad hoc networks (Computer networks); Subject Term: RESEARCH; Author-Supplied Keyword: Ad hoc networks; Author-Supplied Keyword: cognitive radio networks; Author-Supplied Keyword: cross-layer design; Author-Supplied Keyword: dynamic spectrum allocation; Author-Supplied Keyword: routing; NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; NAICS/Industry Codes: 515111 Radio Networks; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TVT.2010.2045403 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50995471&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chan, Kwai S. AU - Enright, Michael P. AU - Moody, Jonathan P. AU - Golden, Patrick J. AU - Chandra, Ramesh AU - Pentz, Alan C. T1 - Residual stress profiles for mitigating fretting fatigue in gas turbine engine disks JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2010/05// VL - 32 IS - 5 M3 - Article SP - 815 EP - 823 SN - 01421123 AB - Abstract: The driving force for fretting fatigue in engine disks is the contact stresses generated by fretting of the blade and the disk surfaces in the attachment region. This paper examines the use of different residual compressive stress profiles to counteract the undesirable effects of contact stresses and to mitigate fretting fatigue. A global finite-element analysis of the disk blade assembly is first performed. The contact pressure and shear traction at the attachment region are extracted from the FEM results and used to compute the contact stress distribution. The contact stresses are then combined with the residual stresses and the bulk stresses. The overall stress distribution is then utilized in a probabilistic crack growth model to predict the risk of disk failure for a military engine under simulated loading conditions. The results are used to identify the minimum residual stress profile for mitigating fretting fatigue in engine disks. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS-turbine disks KW - RESIDUAL stresses KW - FRETTING corrosion KW - MATERIALS -- Fatigue KW - LOADS (Mechanics) KW - FINITE element method KW - PROBABILITY theory KW - Engine disks KW - Fatigue KW - Fretting KW - Low plasticity burnishing KW - Probabilistic methods KW - Residual stress N1 - Accession Number: 47951033; Chan, Kwai S. 1; Email Address: kchan@swri.edu Enright, Michael P. 1 Moody, Jonathan P. 1 Golden, Patrick J. 2 Chandra, Ramesh 3 Pentz, Alan C. 3; Affiliation: 1: Southwest Research Institute®, San Antonio, TX 78238, United States 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, United States 3: Propulsion and Power Engineering, NAVAIR, Patuxent River, MD 20670, United States; Source Info: May2010, Vol. 32 Issue 5, p815; Subject Term: GAS-turbine disks; Subject Term: RESIDUAL stresses; Subject Term: FRETTING corrosion; Subject Term: MATERIALS -- Fatigue; Subject Term: LOADS (Mechanics); Subject Term: FINITE element method; Subject Term: PROBABILITY theory; Author-Supplied Keyword: Engine disks; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Fretting; Author-Supplied Keyword: Low plasticity burnishing; Author-Supplied Keyword: Probabilistic methods; Author-Supplied Keyword: Residual stress; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijfatigue.2009.07.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47951033&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anderson, Stanley E. AU - Somogyi, Arpad AU - Haddad, Timothy S. AU - Coughlin, E. Bryan AU - Gadodia, Gunjan AU - Marten, David F. AU - Ray, Julie AU - Bowers, Michael T. T1 - ESI and MALDI mass spectrometry of large POSS oligomers JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2010/05// VL - 292 IS - 1-3 M3 - Article SP - 38 EP - 47 SN - 13873806 AB - Abstract: A series of Polyhedral Oligomeric Silsesquioxane (POSS) propylmethacrylate (PMA) and styryl oligomers were prepared from POSS monomers, R7R''Si8O12, containing 1 functional R’ group for polymerization and 7 inert R-groups where R=isobutyl (i-butyl), phenyl (Ph), cyclohexyl (Cy) or cyclopentyl (Cp). Both standard atom transfer radical polymerization (ATRP) and free radical syntheses, the latter employing azoisobutylnitrile as the free radical initiator were used in the syntheses. Matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) mass spectra were obtained in a new matrix, 4,4′-dihydroxyoctafluoroazobenzene which was especially designed for insoluble and intractable polymeric materials. Well-resolved series of oligomers were observed out to n =∼13 in both the linear and reflectron modes. Major peaks were assigned based on tandem mass spectrometry (MSMS) fragmentation patterns to give a consistent explanation of the observed spectra. In all cases, ionization of the ATRP products gave cationized parent ions in which the terminal Br atom was replaced by hydrogen. Additional observed peaks were due to loss of POSS side chains from the oligomer backbone. The free radical products were terminated with either one or two isobutylnitrile groups. Electrospray ionization (ESI) spectra were more complex than the MALDI-TOF but showed either identical parent ions or closely related hydroxylated parent ions. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANOSILICON compounds KW - OLIGOMERS KW - MATRIX-assisted laser desorption-ionization KW - METHYL methacrylate KW - ADDITION polymerization KW - NITRILES KW - ELECTROSPRAY ionization mass spectrometry KW - HYDROXYLATION KW - Hybrid inorganic/organic KW - MALDI KW - Polyhedral oligomeric silsesquioxane (POSS) KW - POSS N1 - Accession Number: 49826842; Anderson, Stanley E. 1 Somogyi, Arpad 2 Haddad, Timothy S. 3 Coughlin, E. Bryan 4 Gadodia, Gunjan 4 Marten, David F. 1 Ray, Julie 1 Bowers, Michael T. 5; Email Address: bowers@chem.ucsb.edu; Affiliation: 1: Department of Chemistry, Westmont College, Santa Barbara, CA 93108, United States 2: Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ 85721, United States 3: ERC Inc., Air Force Research Laboratory, 10 East Saturn Boulevard, Building 8451, Edwards AFB, CA 93524-7680, United States 4: Department of Polymer Science and Engineering, UMass, Amherst, MA 01003, United States 5: Department of Chemistry & Biochemistry, University of California, Santa Barbara, CA 93106, United States; Source Info: May2010, Vol. 292 Issue 1-3, p38; Subject Term: ORGANOSILICON compounds; Subject Term: OLIGOMERS; Subject Term: MATRIX-assisted laser desorption-ionization; Subject Term: METHYL methacrylate; Subject Term: ADDITION polymerization; Subject Term: NITRILES; Subject Term: ELECTROSPRAY ionization mass spectrometry; Subject Term: HYDROXYLATION; Author-Supplied Keyword: Hybrid inorganic/organic; Author-Supplied Keyword: MALDI; Author-Supplied Keyword: Polyhedral oligomeric silsesquioxane (POSS); Author-Supplied Keyword: POSS; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijms.2010.02.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49826842&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Riggins, David W. AU - Moorhouse, David J. AU - Camberos, Jose A. T1 - Characterization of Aerospace Vehicle Performance and Mission Analysis Using Thermodynamic Availability. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2010/05//May/Jun2010 VL - 47 IS - 3 M3 - Article SP - 904 EP - 916 SN - 00218669 AB - The fundamental relationship between entropy and aerospace vehicle and mission performance is analyzed in terms of the general availability rate balance between force-based vehicle performance, available energy associated with expended propellant, and the overall loss rate of availability, including the vehicle wake. The availability relationship for a vehicle is analytically combined with the vehicle equations of motion; this combination yields the balance between on-board energy rate usage and rates of changes in kinetic and potential energies of the vehicle and overall rate of entropy production. This result is then integrated over time for a general aerospace mission; as examples, simplified single-stage-to-orbit rocket-powered and air-breathing missions are analyzed. Examination of rate of availability loss for the general case of an accelerating, climbing aerospace vehicle provides a powerful loss superposition principle in terms of the separate evaluation and combination of loss rates for the same vehicle in cruise, acceleration, and climb. Rate of availability losses is also examined in terms of separable losses associated with the propulsion system and external aerodynamics. These loss terms are cast in terms of conventional parameters such as drag coefficient and engine specific impulse. Finally, rate losses in availability for classes of vehicles are described. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENTROPY KW - AERONAUTICS KW - SPACE vehicles KW - PROPELLANTS KW - THERMODYNAMICS KW - AERODYNAMICS KW - FLUID dynamics KW - AEROSPACE engineering N1 - Accession Number: 52330875; Riggins, David W. 1 Moorhouse, David J. 2 Camberos, Jose A. 2; Affiliation: 1: Missouri University of Science and Technology, Rolla, Missouri, 65409 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, 45433; Source Info: May/Jun2010, Vol. 47 Issue 3, p904; Subject Term: ENTROPY; Subject Term: AERONAUTICS; Subject Term: SPACE vehicles; Subject Term: PROPELLANTS; Subject Term: THERMODYNAMICS; Subject Term: AERODYNAMICS; Subject Term: FLUID dynamics; Subject Term: AEROSPACE engineering; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 13p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.2514/1.46420 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52330875&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Missoum, Samy AU - Dribusch, Christoph AU - Beran, Philip T1 - Reliability-Based Design Optimization of Nonlinear Aeroelasticity Problems. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2010/05//May/Jun2010 VL - 47 IS - 3 M3 - Article SP - 992 EP - 998 SN - 00218669 AB - This paper introduces a methodology for the reliability-based design optimization of systems with nonlinear aeroelastic constraints. The approach is based on the construction of explicit flutter and subcritical limit cycle oscillation boundaries in terms of deterministic and random design variables. The boundaries are constructed using a support vector machine that provides a way to efficiently evaluate probabilities of failure and solve the reliability-based design optimization problem. Another major advantage of the approach is that it efficiently manages the discontinuities that might appear during subcritical limit cycle oscillations. The proposed approach is applied to the construction of flutter and subcritical limit cycle oscillation boundaries for a two-degree-of-freedom airfoil with nonlinear stiffnesses. The solution of a reliability-based design optimization problem with a constraint on the probability of subcritical limit cycle oscillation is also provided. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL optimization KW - AEROELASTICITY KW - AERODYNAMICS KW - NONLINEAR models (Statistics) KW - PROBABILITY theory KW - RELIABILITY (Engineering) KW - NONLINEAR oscillations KW - AERONAUTICS N1 - Accession Number: 52330883; Missoum, Samy 1 Dribusch, Christoph 1 Beran, Philip 2; Affiliation: 1: University of Arizona, Tucson, Arizona 85721 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: May/Jun2010, Vol. 47 Issue 3, p992; Subject Term: MATHEMATICAL optimization; Subject Term: AEROELASTICITY; Subject Term: AERODYNAMICS; Subject Term: NONLINEAR models (Statistics); Subject Term: PROBABILITY theory; Subject Term: RELIABILITY (Engineering); Subject Term: NONLINEAR oscillations; Subject Term: AERONAUTICS; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; Number of Pages: 7p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.2514/1.46665 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52330883&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shen, Y. AU - Huang, M. Q. AU - Higgins, A. K. AU - Liu, S. AU - Horwath, J. C. AU - Chen, C. H. T1 - Preparation of PrCo5 bulk magnets using nanograin powders made by surfactant-assisted high energy milling. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/05// VL - 107 IS - 9 M3 - Article SP - 09A722-1 EP - 09A722-3 PB - American Institute of Physics SN - 00218979 AB - PrCo5 nanograin powders used for making bulk magnets were produced by surfactant-assisted high energy ball milling. Using a special compaction technique at 200-525 °C, PrCo5 bulk magnets were successfully prepared using the nanoflake powders. This kind of bulk magnet has a cluster microstructure and is nanocrystalline. The coercivity of the bulk magnet pressed at 200 °C is 5.22 kOe. It is found that the density of the bulk increases with the compaction temperature. Bulk magnet density up to 92% of the theoretical value has been obtained. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE active agents KW - MILLING (Metalwork) KW - CRYSTALLINE electric field KW - MICROSTRUCTURE KW - COERCIVE fields (Electronics) N1 - Accession Number: 98309488; Shen, Y. 1,2; Email Address: yuhui.shen@udri.udayton.edu Huang, M. Q. 3,4 Higgins, A. K. 1 Liu, S. 1,2 Horwath, J. C. 3 Chen, C. H. 1,3; Affiliation: 1: University of Dayton Magnetics Lab., 300 College Park, Dayton, Ohio 45469, USA 2: FutureTek Corporation, 454 Patterson Rd., Dayton, Ohio 45419, USA 3: Air Force Research Laboratory (AFRL), Wright-Patterson Air Force Base, Ohio 45433, USA 4: UES Inc., 4401 Dayton-Xenia Rd., Dayton, Ohio 45432, USA; Source Info: May2010, Vol. 107 Issue 9, p09A722-1; Subject Term: SURFACE active agents; Subject Term: MILLING (Metalwork); Subject Term: CRYSTALLINE electric field; Subject Term: MICROSTRUCTURE; Subject Term: COERCIVE fields (Electronics); NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1063/1.3339777 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=98309488&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anderson, Wesly S. AU - Polanka, Marc D. AU - Zelina, Joseph AU - Evans, Dave S. AU - Stouffer, Scott D. AU - Justinger, Garth R. T1 - Effects of a Reacting Cross-Stream on Turbine Film Cooling. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2010/05// VL - 132 IS - 5 M3 - Article SP - 051501 EP - 051501 SN - 07424795 AB - Film cooling plays a critical role in providing effective thermal protection to components in modern gas turbine engines. A significant effort has been undertaken over the last 40 years to improve the distribution of coolant and to ensure that the airfoil is protected by this coolant from the hot gases in the freestream. This film, under conditions with high fuel-air ratios, may actually be detrimental to the underlying metal. The presence of unburned fuel from an upstream combustor may interact with this oxygen rich film coolant jet resulting in secondary combustion. The completion of the reactions can increase the gas temperature locally resulting in higher heat transfer to the airfoil directly along the path line of the film coolant jet. This secondary combustion could damage the turbine blade, resulting in costly repair, reduction in turbine life, or even engine failure. However, knowledge of film cooling in a reactive flow is very limited. The current study explores the interaction of cooling flow from typical cooling holes with the exhaust of a fuel-rich well-stirred reactor operating at high temperatures over a flat plate. Surface temperatures, heat flux, and heat transfer coefficients are calculated for a variety of reactor fuel-to-air ratios, cooling hole geometries, and blowing ratios. Emphasis is placed on the difference between a normal cylindrical hole, an inclined cylindrical hole, and a fan- shaped cooling hole. When both air and nitrogen are injected through the cooling holes, the changes in surface temperature can be directly correlated with the presence of the reaction. Photographs of the localized burning are presented to verify the extent and locations of the reaction. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXYGEN KW - AEROFOILS KW - HEAT transfer KW - NITROGEN KW - COMBUSTION gases N1 - Accession Number: 49184314; Anderson, Wesly S. 1 Polanka, Marc D. 1 Zelina, Joseph 1 Evans, Dave S. 2 Stouffer, Scott D. 3 Justinger, Garth R. 3; Affiliation: 1: Air Force Research Laboratory, Propulsion Directorate, Wright Patterson AFB, Dayton, OH 45433, USA 2: Naval Air Systems Command, NAS, Patuxent River, MD 20670, USA 3: University of Dayton Research Institute, Dayton, OH 45469, USA; Source Info: May2010, Vol. 132 Issue 5, p051501; Subject Term: OXYGEN; Subject Term: AEROFOILS; Subject Term: HEAT transfer; Subject Term: NITROGEN; Subject Term: COMBUSTION gases; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1115/1.3204616 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49184314&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Powell, Matthew AU - Bailey, Justin AU - Maggio, Lauren A. T1 - Q / How should you manage children born to hepatitis C-positive women? JO - Journal of Family Practice JF - Journal of Family Practice Y1 - 2010/05// VL - 59 IS - 5 M3 - Article SP - 289 EP - 290 PB - Frontline Medical Communications SN - 00943509 AB - The article presents a challenge on management and caring of children which are born by hepatitis C-positive women. It focuses on vital facts on strength of recommendation (SOR) in dealing with babies in regards to hepatitis C virus (HCV) and human immunodeficiency virus (HIV) transmission. It presents the implications of viral transmission of HCV and HIV in the normal and cesarean delivery with its retrospective analysis, and the issues due internal monitoring and postpartum lab testing. KW - HEPATITIS C KW - RESEARCH -- Methodology KW - HEPATITIS C -- Transmission KW - CESAREAN section -- Complications KW - PREVENTION KW - RETROSPECTIVE studies KW - CASE-control method N1 - Accession Number: 51360982; Powell, Matthew 1 Bailey, Justin 1 Maggio, Lauren A. 2; Affiliation: 1: David Grant Medical Center, United States Air Force, Travis Air Force Base, Calif 2: Lane Library, Stanford University, Palo Alto, Calif; Source Info: May2010, Vol. 59 Issue 5, p289; Subject Term: HEPATITIS C; Subject Term: RESEARCH -- Methodology; Subject Term: HEPATITIS C -- Transmission; Subject Term: CESAREAN section -- Complications; Subject Term: PREVENTION; Subject Term: RETROSPECTIVE studies; Subject Term: CASE-control method; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51360982&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mudaliar, Saba T1 - Remarks on the radiative transfer approach to scattering of electromagnetic waves in layered random media JO - Journal of Quantitative Spectroscopy & Radiative Transfer JF - Journal of Quantitative Spectroscopy & Radiative Transfer Y1 - 2010/05// VL - 111 IS - 7/8 M3 - Article SP - 1015 EP - 1024 SN - 00224073 AB - Abstract: The radiative transfer (RT) approach is widely used in applications involving scattering from layered random media with rough interfaces. Although it has been successful in several applications in various disciplines it is well known that this approach involves certain approximations. In this paper these assumptions and approximations are reexamined. To enable this a statistical wave approach is employed to this problem and the governing equations for the first and second moments of the wave functions are derived. A transition is hence made to arrive at a system of equations corresponding to that of the RT approach. It is hence found that more conditions are implicitly involved in the RT approach than generally believed to be sufficient. [Copyright &y& Elsevier] AB - Copyright of Journal of Quantitative Spectroscopy & Radiative Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATIVE transfer KW - SURFACE roughness KW - SCATTERING (Physics) KW - ELECTROMAGNETIC waves KW - INTERFACES (Physical sciences) KW - Multilayer KW - Radiative transfer KW - Random media KW - Rough surfaces KW - Wave approach N1 - Accession Number: 48406155; Mudaliar, Saba 1; Email Address: saba.mudaliar@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA 01731-2909, USA; Source Info: May2010, Vol. 111 Issue 7/8, p1015; Subject Term: RADIATIVE transfer; Subject Term: SURFACE roughness; Subject Term: SCATTERING (Physics); Subject Term: ELECTROMAGNETIC waves; Subject Term: INTERFACES (Physical sciences); Author-Supplied Keyword: Multilayer; Author-Supplied Keyword: Radiative transfer; Author-Supplied Keyword: Random media; Author-Supplied Keyword: Rough surfaces; Author-Supplied Keyword: Wave approach; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.jqsrt.2009.12.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48406155&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Okumura, Teppei AU - Mengu Cho AU - Inguimbert, Virginie AU - Payan, Denis AU - Vayner, Boris AU - Ferguson, Dale C. T1 - International Round-Robin Tests on Solar Cell Degradation Due to Electrostatic Discharge. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2010/05//May/Jun2010 VL - 47 IS - 3 M3 - Article SP - 533 EP - 541 SN - 00224650 AB - Primary discharge occurs on solar arrays due to their interaction with the space plasma. A solar cell may suffer degradation of electrical performance if the primary discharge occurs at the cell edge. To estimate the power generated at the end of life, it is necessary to study the details of solar cell degradation. However, throughout the world, primary, discharge has not been recognized as a cause of solar cell degradation. There is now an international collaboration among institutions in Japan, France, and the United States toward a common international standardization of solar array electrostatic discharge test methods. Round-robin tests were carried out as part of this collaborative research. Laboratory experiments were performed at the same time in three institutions using the same test method and identical solar cells. Solar cell degradation was confirmed at all three institutions. It was found that a multijunction solar cell is more susceptible to damage from primary discharge than a crystalline silicon solar cell. Throughout the round-robin tests, discharge has been shown to be a significant cause of solar cell degradation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR activity KW - SPACE plasmas KW - SOLAR cells KW - JAPAN KW - FRANCE KW - UNITED States N1 - Accession Number: 51949171; Okumura, Teppei 1; Email Address: okumura.teppei@jaxa.jp Mengu Cho 2 Inguimbert, Virginie 3; Email Address: virginie.inguimpert@onera.fr Payan, Denis 4; Email Address: denis.paya@cnes.fr Vayner, Boris 5,6; Email Address: boris.v.vainer@nasa.gov Ferguson, Dale C. 6,7; Email Address: dale.ferguson@kirtland.af.mil; Affiliation: 1: Japan Aerospace Exploration Agency, Tsukuba 305-8505, Japan 2: Kyushu Institute of Technology, Kitakyushu 804-8550, Japan 3: ONERA, 31055 Toulouse, France 4: Centre National d'Etudes Spatiales, 31401 Toulouse, France 5: Ohio Aerospace Institute, Cleveland, Ohio 44142 6: Member AIAA 7: U.S. Air Force Research Laboratory, Albuquerque, New Mexico; Source Info: May/Jun2010, Vol. 47 Issue 3, p533; Subject Term: SOLAR activity; Subject Term: SPACE plasmas; Subject Term: SOLAR cells; Subject Term: JAPAN; Subject Term: FRANCE; Subject Term: UNITED States; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; Number of Pages: 9p; Illustrations: 5 Diagrams, 7 Charts, 16 Graphs; Document Type: Article L3 - 10.2514/1.47929 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51949171&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Popescu, Roxana AU - Pîrvu, Cristian AU - Moldoveanu, Mirela AU - Grote, James G. AU - Kajzar, Francois AU - Rau, Ileana T1 - Biopolymer Thin Films for Optoelectronics Applications. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2010/05// VL - 522 M3 - Article SP - 229 EP - 237 SN - 15421406 AB - Nowadays one observes a growing interest in studying and application of “green materials” - biomaterials. For an appropriate use of them in practical devices a good knowledge and understanding of their properties are necessary. This paper presents some results obtained for two, the most abundant on the Earth, biopolymers which are DNA and collagen. In order to make these biopolymers useful they have to be functionalized with active molecules, bringing them a researched property. The biopolymers were doped with Rhodamine 590 and Disperse Red 1. The contact angle measurements are also presented and discussed. The present studies show that the properties of these materials depend on the dyes used to render them optically responsive in visible range and on the biopolymer as well. They show that interaction with substrate is modified by the added dye, as expected. We have measured also the optical damage threshold of studied biopolymers at 1,064 nm and we found that it is about one order of magnitude higher for the studied biopolymers as compared with the synthetic ones. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOPOLYMERS KW - BIOMEDICAL materials KW - EXTRACELLULAR matrix proteins KW - OPTOELECTRONICS KW - SURFACE chemistry KW - AFM KW - biopolymer KW - collagen KW - contact angle KW - DNA KW - optical damage threshold N1 - Accession Number: 51095749; Popescu, Roxana 1 Pîrvu, Cristian 1 Moldoveanu, Mirela 1 Grote, James G. 2 Kajzar, Francois 1 Rau, Ileana 1; Email Address: ileana.rau@upb.ro; Affiliation: 1: Faculty of Applied Chemistry and Materials Sciences, University Politehnica from Bucharest, Bucharest, Romania 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXPS, Wright-Patterson Air Force Base, Ohio, USA; Source Info: 2010, Vol. 522, p229; Subject Term: BIOPOLYMERS; Subject Term: BIOMEDICAL materials; Subject Term: EXTRACELLULAR matrix proteins; Subject Term: OPTOELECTRONICS; Subject Term: SURFACE chemistry; Author-Supplied Keyword: AFM; Author-Supplied Keyword: biopolymer; Author-Supplied Keyword: collagen; Author-Supplied Keyword: contact angle; Author-Supplied Keyword: DNA; Author-Supplied Keyword: optical damage threshold; Number of Pages: 9p; Illustrations: 3 Charts, 9 Graphs; Document Type: Article L3 - 10.1080/15421401003722757 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51095749&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Helton, William S. AU - Warm, Joel S. AU - Tripp, Lloyd D. AU - Matthews, Gerald AU - Parasuraman, Raja AU - Hancock, Peter A. T1 - Cerebral lateralization of vigilance: A function of task difficulty JO - Neuropsychologia JF - Neuropsychologia Y1 - 2010/05// VL - 48 IS - 6 M3 - Article SP - 1683 EP - 1688 SN - 00283932 AB - Abstract: Functional near infrared spectroscopy (fNIRS) measures of cerebral oxygenation levels were collected from participants performing difficult and easy versions of a 12min vigilance task and for controls who merely watched the displays without a work imperative. For the active participants, the fNIRS measurements in both vigilance tasks showed higher levels of cerebral activity than was present in the case of the no-work controls. In the easier task, greater activation was found in the right than in the left cerebral hemisphere, matching previous results indicating right hemisphere dominance for vigilance. However, for the more difficult task, this laterality difference was not found, instead activation was bilateral. Unilateral hemispheric activation in vigilance may be a result of employing relatively easy/simple tasks, not vigilance per se. [Copyright &y& Elsevier] AB - Copyright of Neuropsychologia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VIGILANCE (Psychology) KW - NEAR infrared spectroscopy KW - CEREBRAL dominance KW - ATTENTION KW - BRAIN function localization KW - Laterality KW - Near-infrared spectroscopy KW - Sustained attention KW - Vigilance N1 - Accession Number: 50362148; Helton, William S. 1; Email Address: wshelton@mtu.edu Warm, Joel S. 2 Tripp, Lloyd D. 2 Matthews, Gerald 3 Parasuraman, Raja 4 Hancock, Peter A. 5; Affiliation: 1: Department of Psychology, University of Canterbury, Private Bag 4800, Christchurch, New Zealand 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH, USA 3: Department of Psychology, University of Cincinnati, OH, USA 4: Department of Psychology, George Mason University, VA, USA 5: Department of Psychology, University of Central Florida, Orlando, FL, USA; Source Info: May2010, Vol. 48 Issue 6, p1683; Subject Term: VIGILANCE (Psychology); Subject Term: NEAR infrared spectroscopy; Subject Term: CEREBRAL dominance; Subject Term: ATTENTION; Subject Term: BRAIN function localization; Author-Supplied Keyword: Laterality; Author-Supplied Keyword: Near-infrared spectroscopy; Author-Supplied Keyword: Sustained attention; Author-Supplied Keyword: Vigilance; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.neuropsychologia.2010.02.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50362148&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Falconer, Travis M. AU - Lewis, William K. AU - Bemish, Raymond J. AU - Miller, Roger E. AU - Glish, Gary L. T1 - Formation of cold ion-neutral clusters using superfluid helium nanodroplets. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2010/05// VL - 81 IS - 5 M3 - Article SP - 054101 PB - American Institute of Physics SN - 00346748 AB - A strategy for forming and detecting cold ion-neutral clusters using superfluid helium nanodroplets is described. Sodium cations generated via thermionic emission are directed toward a beam of helium droplets that can also pick up neutral molecules and form a cluster with the captured Na+. The composition of the clusters is determined by mass spectrometric analysis following a desolvation step. It is shown that the polar molecules H2O and HCN are picked up and form ion-neutral clusters with sizes and relative abundances that are in good agreement with those predicted by the statistics used to describe neutral cluster formation in helium droplets. [Na(H2O)n]+ clusters containing six to 43 water molecules were observed, a size range of sodiated water clusters difficult to access in the gas phase. Clusters containing N2 were in lower abundance than expected, suggesting that the desolvation process heats the clusters sufficiently to dissociate those containing nonpolar molecules. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERFLUIDITY KW - HELIUM KW - RADIOACTIVITY KW - SECONDARY ion emission KW - THERMAL electrons N1 - Accession Number: 51059103; Falconer, Travis M. 1 Lewis, William K. 2 Bemish, Raymond J. 3 Miller, Roger E. Glish, Gary L. 1; Email Address: glish@unc.edu; Affiliation: 1: Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, USA. 2: University of Dayton Research Institute, Dayton, Ohio 45469, USA. 3: Space Vehicles Directorate, Air Force Research Laboratory, 29 Randolph Rd., Hanscom Air Force Base, Massachusetts 10731-3010, USA.; Source Info: May2010, Vol. 81 Issue 5, p054101; Subject Term: SUPERFLUIDITY; Subject Term: HELIUM; Subject Term: RADIOACTIVITY; Subject Term: SECONDARY ion emission; Subject Term: THERMAL electrons; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 6p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.3386584 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51059103&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Park, J.H. AU - Mitchel, W.C. AU - Smith, H.E. AU - Grazulis, L. AU - Eyink, K.G. T1 - Studies of interfacial layers between 4H-SiC (0001) and graphene JO - Carbon JF - Carbon Y1 - 2010/04/15/ VL - 48 IS - 5 M3 - Letter SP - 1670 EP - 1673 SN - 00086223 AB - Abstract: The region between epitaxial graphene and the SiC substrate has been investigated. 4H-SiC (0001) samples were annealed in a high temperature molecular beam epitaxy system at temperatures between 1100 and 1700°C. The interfacial layers between the pristine SiC and the graphene layers were studied by X-ray photoelectron spectroscopy. Graphene was found to grow on the SiC surface at temperatures above 1200°C. Below this temperature, however, sp3 bonded carbon layers were formed with a constant atomic Si concentration. C1s and Si2p core level spectra of the graphene samples suggest that the interface layer we observe has a high carbon concentration and its thickness increases during the graphitization process. A significant concentration of Si atoms is trapped in the interface layer and their concentration also increases during graphitization. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON carbide KW - GRAPHENE KW - INTERFACES (Physical sciences) KW - MOLECULAR beam epitaxy KW - SUBSTRATES (Materials science) KW - HIGH temperatures KW - ANNEALING of crystals KW - X-ray photoelectron spectroscopy N1 - Accession Number: 48029759; Park, J.H.; Email Address: jeongho.park@wpafb.af.mil Mitchel, W.C. 1 Smith, H.E. 1 Grazulis, L. 1 Eyink, K.G. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXPS, Wright–Patterson Air Force Base, Ohio 45433, USA; Source Info: Apr2010, Vol. 48 Issue 5, p1670; Subject Term: SILICON carbide; Subject Term: GRAPHENE; Subject Term: INTERFACES (Physical sciences); Subject Term: MOLECULAR beam epitaxy; Subject Term: SUBSTRATES (Materials science); Subject Term: HIGH temperatures; Subject Term: ANNEALING of crystals; Subject Term: X-ray photoelectron spectroscopy; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 4p; Document Type: Letter L3 - 10.1016/j.carbon.2009.12.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48029759&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H. J. AU - Ullrich, B. AU - Elhamri, S. AU - Szmulowicz, F. AU - Brown, G. J. AU - Tung, L. C. AU - Wang, Y. J. T1 - Magneto-optics of InAs/GaSb superlattices. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/04/15/ VL - 107 IS - 8 M3 - Article SP - 083112 EP - 083117 PB - American Institute of Physics SN - 00218979 AB - We investigate the optical and electrical properties of a series of InAs/GaSb superlattices (SLs) as a function of InAs layer width d, from 21 to 55 Å, with a fixed GaSb layer width of 24 Å, corresponding to SLs with the cutoff wavelengths between 4 and 19 μm. Since the higher electron mass in InAs/GaSb SLs than in mercury cadmium telluride should lead to lower photodiode tunneling currents, we also measured the cyclotron effective mass for a very long wavelength infrared design SLs. For d<40 Å, the SLs were p-type, with hole mobilities of approximately 8 000 cm2/V s. For a high mobility p-type sample no hole cyclotron resonance signal was detected. However, the SLs with d≥40 Å were n-type, with electron mobilities increasing from 865 to 6126 cm2/V s. Cyclotron resonance data on an n-type SL sample yielded an electron cyclotron mass of 0.068 m0, which is three times the InAs bulk value of 0.023 m0. The mass enhancement was only partially accounted for by conduction band nonparabolicity, based on our 8×8 envelope function calculation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CADMIUM KW - QUANTUM electrodynamics KW - PARTICLES (Nuclear physics) KW - FREE electron theory of metals KW - RESONANCE KW - MAGNETISM KW - ELECTRIC conductivity N1 - Accession Number: 50175756; Haugan, H. J. 1 Ullrich, B. 1 Elhamri, S. 1 Szmulowicz, F. 1 Brown, G. J. 1 Tung, L. C. 2 Wang, Y. J. 2; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, 2: National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310,; Source Info: Apr2010, Vol. 107 Issue 8, p083112; Subject Term: CADMIUM; Subject Term: QUANTUM electrodynamics; Subject Term: PARTICLES (Nuclear physics); Subject Term: FREE electron theory of metals; Subject Term: RESONANCE; Subject Term: MAGNETISM; Subject Term: ELECTRIC conductivity; Number of Pages: 5p; Illustrations: 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.3391976 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50175756&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Venkat, Narayanan AU - Dang, Thuy D. AU - Bai, Zongwu AU - McNier, Victor K. AU - DeCerbo, Jennifer N. AU - Tsao, Bang-Hung AU - Stricker, Jeffery T. T1 - High temperature polymer film dielectrics for aerospace power conditioning capacitor applications JO - Materials Science & Engineering: B JF - Materials Science & Engineering: B Y1 - 2010/04/15/ VL - 168 IS - 1-3 M3 - Article SP - 16 EP - 21 SN - 09215107 AB - Abstract: Polymer dielectrics are the preferred materials of choice for capacitive energy-storage applications because of their potential for high dielectric breakdown strengths, low dissipation factors and good dielectric stability over a wide range of frequencies and temperatures, despite having inherently lower dielectric constants relative to ceramic dielectrics. They are also amenable to large area processing into films at a relatively lower cost. Air Force currently has a strong need for the development of compact capacitors which are thermally robust for operation in a variety of aerospace power conditioning applications. While such applications typically use polycarbonate (PC) dielectric films in wound capacitors for operation from −55°C to 125°C, future power electronic systems would require the use of polymer dielectrics that can reliably operate up to elevated temperatures in the range of 250–350°C. The focus of this research is the generation and dielectric evaluation of metallized, thin free-standing films derived from high temperature polymer structures such as fluorinated polybenzoxazoles, post-functionalized fluorinated polyimides and fluorenyl polyesters incorporating diamond-like hydrocarbon units. The discussion is centered mainly on variable temperature dielectric measurements of film capacitance and dissipation factor and the effects of thermal cycling, up to a maximum temperature of 350°C, on film dielectric performance. Initial studies clearly point to the dielectric stability of these films for high temperature power conditioning applications, as indicated by their relatively low temperature coefficient of capacitance (TCC) (∼2%) over the entire range of temperatures. Some of the films were also found to exhibit good dielectric breakdown strengths (up to 470V/μm) and a film dissipation factor of the order of <0.003 (0.3%) at the frequency of interest (10kHz) for the intended applications. The measured relative dielectric permittivities of these high temperature polymer films were in the range of 2.9–3.5. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH temperatures KW - THIN films -- Electric properties KW - CAPACITORS KW - AEROSPACE engineering KW - POLYMERS -- Electric properties KW - ENERGY storage KW - BREAKDOWN (Electricity) KW - ENERGY dissipation KW - Aerospace power conditioning KW - Capacitor applications KW - Dielectric stability KW - High temperature KW - Polymer films N1 - Accession Number: 50359343; Venkat, Narayanan 1; Email Address: narayanan.venkat@wpafb.af.mil Dang, Thuy D. 2 Bai, Zongwu 1 McNier, Victor K. 1 DeCerbo, Jennifer N. 3 Tsao, Bang-Hung 1 Stricker, Jeffery T. 3; Affiliation: 1: University of Dayton Research Institute (UDRI), Dayton, OH 45469, USA 2: Air Force Research Laboratory-Nanostructured and Biological Materials Branch (AFRL/RXBN), USA 3: Air Force Research Laboratory-Electrical Technology Branch (AFRL/RZPE), Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Apr2010, Vol. 168 Issue 1-3, p16; Subject Term: HIGH temperatures; Subject Term: THIN films -- Electric properties; Subject Term: CAPACITORS; Subject Term: AEROSPACE engineering; Subject Term: POLYMERS -- Electric properties; Subject Term: ENERGY storage; Subject Term: BREAKDOWN (Electricity); Subject Term: ENERGY dissipation; Author-Supplied Keyword: Aerospace power conditioning; Author-Supplied Keyword: Capacitor applications; Author-Supplied Keyword: Dielectric stability; Author-Supplied Keyword: High temperature; Author-Supplied Keyword: Polymer films; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.mseb.2009.12.038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50359343&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Román, Miguel O. AU - Schaaf, Crystal B. AU - Lewis, Philip AU - Gao, Feng AU - Anderson, Gail P. AU - Privette, Jeffrey L. AU - Strahler, Alan H. AU - Woodcock, Curtis E. AU - Barnsley, Michael T1 - Assessing the coupling between surface albedo derived from MODIS and the fraction of diffuse skylight over spatially-characterized landscapes JO - Remote Sensing of Environment JF - Remote Sensing of Environment Y1 - 2010/04/15/ VL - 114 IS - 4 M3 - Article SP - 738 EP - 760 SN - 00344257 AB - Abstract: In this effort, the MODerate Resolution Imaging Spectroradiometer (MODIS) (Collection V005) Bidirectional Reflectance Distribution Function (BRDF)/Albedo algorithm is used to retrieve instantaneous surface albedo at a point in time and under specific atmospheric conditions. These retrievals are then used to study the role that the fraction of diffuse skylight plays under realistic scenarios of anisotropic diffuse illumination and multiple scattering between the surface and atmosphere. Simulations of the sky radiance using the MODTRAN®5.1 radiative transfer model were performed under different aerosol optical properties, illumination conditions, and surface characteristics to describe these effects on surface albedo retrievals from MODIS. This technique was examined using a validation scheme over four measurement sites with varied aerosol levels and landscapes, ranging from croplands to tundra ecosystems, and over extended time periods. Furthermore, a series of geostatistical analyses were performed to examine the types of spatial patterns observed at each measurement site. In particular, Enhanced Thematic Mapper Plus (ETM+) retrievals of surface albedo were acquired to analyze the change in variogram model parameters as a function of increased window-size. Results were then used to assess the degree to which a given point measurement is able to capture the intrinsic variability at the scale of MODIS observations. Assessments of MODIS instantaneous albedos that account for anisotropic multiple scattering, over snow-free and snow-covered lands and at all diurnal solar zenith angles, show a slight improvement over the albedo formulations that treat the downwelling diffuse radiation as isotropic. Comparisons with field measurements show biases improving by 0.004–0.013 absolute units (root-mean-squared error) or 0.1%–2.0% relative error. [Copyright &y& Elsevier] AB - Copyright of Remote Sensing of Environment is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALBEDO KW - LANDSCAPES KW - MODIS (Spectroradiometer) KW - SPECTRAL reflectance KW - DISTRIBUTION (Probability theory) KW - ALGORITHMS KW - ATMOSPHERIC radiation KW - SIMULATION methods & models KW - GEOLOGICAL statistics KW - REMOTE sensing KW - ARM-SGP Central Facility KW - BRDF KW - EOS land validation core sites KW - MODIS KW - MODTRAN KW - NSA-Barrow KW - Remote sensing KW - SAFARI 2000 Project KW - Spatial analysis KW - Surface albedo KW - Validation N1 - Accession Number: 47826641; Román, Miguel O. 1,2; Email Address: Miguel.O.Roman@nasa.gov Schaaf, Crystal B. 1 Lewis, Philip 3 Gao, Feng 2,4 Anderson, Gail P. 5,6 Privette, Jeffrey L. 7 Strahler, Alan H. 1 Woodcock, Curtis E. 1 Barnsley, Michael 8; Affiliation: 1: Department of Geography and Environment, Boston University, Boston, MA, USA 2: Hydrospheric and Biospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA 3: Department of Geography, University College London, London, UK 4: Earth Resources Technology, Inc., Annapolis Junction, MD, USA 5: Global Monitoring Division, Earth System Research Laboratory, NOAA, Boulder, CO, USA 6: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, MA, USA 7: NOAA National Climatic Data Center, Asheville, NC, USA 8: Department of Geography, University of Wales Swansea, Swansea, UK; Source Info: Apr2010, Vol. 114 Issue 4, p738; Subject Term: ALBEDO; Subject Term: LANDSCAPES; Subject Term: MODIS (Spectroradiometer); Subject Term: SPECTRAL reflectance; Subject Term: DISTRIBUTION (Probability theory); Subject Term: ALGORITHMS; Subject Term: ATMOSPHERIC radiation; Subject Term: SIMULATION methods & models; Subject Term: GEOLOGICAL statistics; Subject Term: REMOTE sensing; Author-Supplied Keyword: ARM-SGP Central Facility; Author-Supplied Keyword: BRDF; Author-Supplied Keyword: EOS land validation core sites; Author-Supplied Keyword: MODIS; Author-Supplied Keyword: MODTRAN; Author-Supplied Keyword: NSA-Barrow; Author-Supplied Keyword: Remote sensing; Author-Supplied Keyword: SAFARI 2000 Project; Author-Supplied Keyword: Spatial analysis; Author-Supplied Keyword: Surface albedo; Author-Supplied Keyword: Validation; Number of Pages: 23p; Document Type: Article L3 - 10.1016/j.rse.2009.11.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47826641&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Razani, A. AU - Fraser, T. AU - Dodson, C. AU - Roberts, T. T1 - THERMODYNAMIC ANALYSIS AND OPTIMIZATION BASED ON EXERGY FLOW FOR A TWO-STAGED PULSE TUBE REFRIGERATOR. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2010/04/09/ VL - 1218 IS - 1 M3 - Article SP - 113 EP - 120 PB - American Institute of Physics SN - 0094243X AB - A control thermodynamic model for a two-stage Pulse Tube Refrigerators (PTRs) is developed based on exergy flow in the refrigerator. The model includes flow conductance, heat transfer effectiveness, and conduction heat transfer parameters for regenerators in both stages. It is assumed that a phase shift controller exists in both stages to control the phase shift between the pressure and mass flow rates that can control and optimize the performance of the refrigerator. The effects of the allocation of the values of flow conductance and ineffectiveness parameters in the regenerators, the mid-stage temperature, and the phase shift in each stage on the performance of the refrigerator are investigated. Important dimensionless parameters controlling the thermodynamic performance of two-stage PTRs, including a model to quantify the magnitude of different components of irreversibility in the regenerators, is developed and discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMODYNAMICS KW - REFRIGERATORS KW - PHASE shift (Nuclear physics) KW - SCATTERING (Physics) KW - HEAT transfer KW - Cryocoolers KW - Exergy analysis KW - Irreversibility KW - Multi-stage KW - Pulse tubes N1 - Accession Number: 49807236; Razani, A. 1,2 Fraser, T. 3 Dodson, C. 2 Roberts, T. 2; Affiliation: 1: Mechanical Engineering Department, University of New Mexico, Albuquerque, NM 87131. 2: Spacecraft Component Thermal Research Group, Air Force Research Laboratory, Kirtland AFB, NM 87117-5776. 3: Applied Technology Associates, Albuquerque, NM 87123-3353.; Source Info: 4/9/2010, Vol. 1218 Issue 1, p113; Subject Term: THERMODYNAMICS; Subject Term: REFRIGERATORS; Subject Term: PHASE shift (Nuclear physics); Subject Term: SCATTERING (Physics); Subject Term: HEAT transfer; Author-Supplied Keyword: Cryocoolers; Author-Supplied Keyword: Exergy analysis; Author-Supplied Keyword: Irreversibility; Author-Supplied Keyword: Multi-stage; Author-Supplied Keyword: Pulse tubes; NAICS/Industry Codes: 335222 Household Refrigerator and Home Freezer Manufacturing; NAICS/Industry Codes: 423740 Refrigeration Equipment and Supplies Merchant Wholesalers; NAICS/Industry Codes: 443143 Appliance, television and other electronics stores; NAICS/Industry Codes: 811412 Appliance Repair and Maintenance; NAICS/Industry Codes: 335223 Major kitchen appliance manufacturing; NAICS/Industry Codes: 414220 Household appliance merchant wholesalers; NAICS/Industry Codes: 423620 Household Appliances, Electric Housewares, and Consumer Electronics Merchant Wholesalers; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.3422277 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49807236&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dodson, C. AU - Razani, A. AU - Roberts, T. T1 - INERTANCE TUBE MODELING AND THE EFFECTS OF TEMPERATURE. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2010/04/09/ VL - 1218 IS - 1 M3 - Article SP - 121 EP - 127 PB - American Institute of Physics SN - 0094243X AB - Pulse tube refrigerators (PTRs) have made dramatic improvements in reliability, efficiency and usage. Inertance tube PTRs have been one of the keys to these improvements. The inertance tube is the component in the PTR that most easily affects the control of the PTR fluid dynamics. In one application in multistage cryocoolers, the performance of inertance tubes at the cryogenic temperatures is of interest. One purpose of this paper is to understand how temperature and the size of the reservoir influence the phase shift between mass flow rate and pressure at the inlet of the inertance tube. Various models including a two dimensional Computational Fluid Dynamics (CFD) will be compared to understand how these models can predict the phase shift and the acoustic power. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REFRIGERATORS KW - COMPUTATIONAL fluid dynamics KW - FLUID dynamics KW - LOW temperature engineering KW - PHASE shifters KW - computational fluid dynamics KW - cryocoolers KW - Inertance tube KW - oscillating flow KW - pulse tube refrigerators N1 - Accession Number: 49807225; Dodson, C. 1 Razani, A. 1,2 Roberts, T. 1; Affiliation: 1: Air Force Research Laboratory, Kirtland AFB, NM, USA 87117-5776. 2: University of New Mexico, Albuquerque, NM 87131.; Source Info: 4/9/2010, Vol. 1218 Issue 1, p121; Subject Term: REFRIGERATORS; Subject Term: COMPUTATIONAL fluid dynamics; Subject Term: FLUID dynamics; Subject Term: LOW temperature engineering; Subject Term: PHASE shifters; Author-Supplied Keyword: computational fluid dynamics; Author-Supplied Keyword: cryocoolers; Author-Supplied Keyword: Inertance tube; Author-Supplied Keyword: oscillating flow; Author-Supplied Keyword: pulse tube refrigerators; NAICS/Industry Codes: 335222 Household Refrigerator and Home Freezer Manufacturing; NAICS/Industry Codes: 443143 Appliance, television and other electronics stores; NAICS/Industry Codes: 811412 Appliance Repair and Maintenance; NAICS/Industry Codes: 335223 Major kitchen appliance manufacturing; NAICS/Industry Codes: 414220 Household appliance merchant wholesalers; NAICS/Industry Codes: 423620 Household Appliances, Electric Housewares, and Consumer Electronics Merchant Wholesalers; NAICS/Industry Codes: 423740 Refrigeration Equipment and Supplies Merchant Wholesalers; Number of Pages: 7p; Document Type: Article L3 - 10.1063/1.3422288 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49807225&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roush, F. T1 - USAF SPACE SENSING CRYOGENIC CONSIDERATIONS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2010/04/09/ VL - 1218 IS - 1 M3 - Article SP - 355 EP - 362 PB - American Institute of Physics SN - 0094243X AB - Infrared (IR) space sensing missions of the future depend upon low mass components and highly capable imaging technologies. Limitations in visible imaging due to the earth’s shadow drive the use of IR surveillance methods for a wide variety of applications for Intelligence, Surveillance, and Reconnaissance (ISR), Ballistic Missile Defense (BMD) applications, and almost certainly in Space Situational Awareness (SSA) and Operationally Responsive Space (ORS) missions. Utilization of IR sensors greatly expands and improves mission capabilities including target and target behavioral discrimination. Background IR emissions and electronic noise that is inherently present in Focal Plane Arrays (FPAs) and surveillance optics bench designs prevents their use unless they are cooled to cryogenic temperatures. This paper describes the role of cryogenic coolers as an enabling technology for generic ISR and BMD missions and provides ISR and BMD mission and requirement planners with a brief glimpse of this critical technology implementation potential. The interaction between cryogenic refrigeration component performance and the IR sensor optics and FPA can be seen as not only mission enabling but also as mission performance enhancing when the refrigeration system is considered as part of an overall optimization problem. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOW temperature engineering KW - BALLISTIC missile defenses KW - MATHEMATICAL optimization KW - DETECTORS KW - GUIDED missiles N1 - Accession Number: 49807141; Roush, F. 1; Affiliation: 1: Air Force Research Laboratory, AFRL/RVSS, Kirtland AFB, NM 87117.; Source Info: 4/9/2010, Vol. 1218 Issue 1, p355; Subject Term: LOW temperature engineering; Subject Term: BALLISTIC missile defenses; Subject Term: MATHEMATICAL optimization; Subject Term: DETECTORS; Subject Term: GUIDED missiles; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.3422374 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49807141&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Burke, J. AU - Varanasi, C. V. AU - Brunke, L. AU - Wang, H. AU - Lee, J. H. AU - Barnes, P. N. T1 - MICROSTRUCTURE AND CRITICAL CURRENT DENSITY OF YBa2Cu3O7-X+BaSnO3 THICK FILMS GROWN WITH PRE-MIXED PULSED LASER ABLATION TARGET. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2010/04/08/ VL - 1219 IS - 1 M3 - Article SP - 355 EP - 361 PB - American Institute of Physics SN - 0094243X AB - YBa2Cu3O7-x (YBCO)+BaSnO3 (BSO) thin films with BSO nanocolumns have been shown to have improved critical current density (Jc) in applied magnetic fields. Previously, a sectored target was used to grow thick (>2.5 μm) YBCO+BSO films. In the present study, a premixed YBCO+BSO (20 mol%) target was used to grow thick films (>3 μm) to determine if similar high quality thick films can be obtained as with the sectored target approach. In the case of the premixed target, BSO material is continuously supplied as opposed to the sectored target method. YBCO+BSO thick film samples processed using a premixed target were also found to have high Jc at high fields with Jc>104 A/cm2 at 8 T at 77 K, whereas typical YBCO films carry only 102 A/cm2. Transmission electron microscopy (TEM) on these films indicated that BSO nanocolumns with a diameter of ∼8–11 nm extend through the thickness of the films. The critical transition temperature (Tc) for the films was found to be ∼87 K, regardless of thickness. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC currents KW - MICROSTRUCTURE KW - THICK films KW - PULSED laser deposition KW - BARIUM compounds KW - BaSnO3 KW - critical current density KW - high-temperature superconductors KW - superconducting transition temperature KW - YBa2Cu3O7-x N1 - Accession Number: 49034004; Burke, J. 1,2 Varanasi, C. V. 1,2 Brunke, L. 1,2 Wang, H. 3 Lee, J. H. 3 Barnes, P. N. 2; Affiliation: 1: University of Dayton Research Institute Dayton Dayton, OH, 45469-0170, USA. 2: Air Force Research Laboratory Wright-Patterson AFB, OH, 45433, USA. 3: Texas A&M College Station, TX, 77843-3128, USA.; Source Info: 4/8/2010, Vol. 1219 Issue 1, p355; Subject Term: ELECTRIC currents; Subject Term: MICROSTRUCTURE; Subject Term: THICK films; Subject Term: PULSED laser deposition; Subject Term: BARIUM compounds; Author-Supplied Keyword: BaSnO3; Author-Supplied Keyword: critical current density; Author-Supplied Keyword: high-temperature superconductors; Author-Supplied Keyword: superconducting transition temperature; Author-Supplied Keyword: YBa2Cu3O7-x; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1063/1.3402323 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49034004&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varanasi, C. V. AU - Reichart, J. AU - Burke, J. AU - Wang, H. AU - Susner, M. AU - Sumption, M. AU - Barnes, P. N. T1 - SECOND PHASE (BaGeO3, BaSiO3) NANOCOLUMNS IN YBa2Cu3O7-x FILMS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2010/04/08/ VL - 1219 IS - 1 M3 - Article SP - 362 EP - 369 PB - American Institute of Physics SN - 0094243X AB - YBa2Cu3O7-x (YBCO) films with BaGeO3 (BGeO), BaSiO3 (BSiO) second phase additions were processed by pulsed laser deposition. Sectored targets with BGO or BSiO wedges as well as pre-mixed targets of YBCO, BGeO or BSiO with appropriate compositions were used to deposit YBCO+BGeO and YBCO+BSiO films on (100) single crystal LaAlO3 substrates. The cross-sectional transmission electron micrographs showed the presence of 20 nm diameter nanocolumns in the YBCO films of both the compositions. However, the critical transition temperature (Tc) of the films was found to significantly decrease. As a result, the critical current density (Jc) in applied magnetic fields was suppressed. The YBCO+BGeO and YBCO+BSiO films made with lower concentrations of additions showed slight improvement in Tc indicating that the substitution of Ge and Si in the lattice is possibly responsible for the Tc depression. This study shows that in addition to the ability to form nanocolumns, the chemical compatibility of BaSnO3 (BSO) and BaZrO3 (BZO) as observed in YBCO+BSO and YBCO+BZO is critical to process high Jc YBCO films. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BARIUM compounds KW - PULSED laser deposition KW - COATING processes KW - TRANSMISSION electron microscopy KW - MAGNETIC fields KW - GERMANIUM KW - BaGeO3 KW - BaSiO3 KW - BaSnO3 KW - coated conductors KW - Flux pinning KW - pulsed laser deposition KW - YBa2Cu3O7-x N1 - Accession Number: 49034003; Varanasi, C. V. 1,2 Reichart, J. 2 Burke, J. 1,2 Wang, H. 3 Susner, M. 4 Sumption, M. 4 Barnes, P. N. 2; Affiliation: 1: University of Dayton Research Institute Dayton Dayton, OH, 45469-0170, USA. 2: Air Force Research Laboratory Wright-Patterson AFB, OH, 45433, USA. 3: Texas A&M College Station, TX, 77843-3128, USA. 4: Ohio State University Columbus, OH, 43210, USA.; Source Info: 4/8/2010, Vol. 1219 Issue 1, p362; Subject Term: BARIUM compounds; Subject Term: PULSED laser deposition; Subject Term: COATING processes; Subject Term: TRANSMISSION electron microscopy; Subject Term: MAGNETIC fields; Subject Term: GERMANIUM; Author-Supplied Keyword: BaGeO3; Author-Supplied Keyword: BaSiO3; Author-Supplied Keyword: BaSnO3; Author-Supplied Keyword: coated conductors; Author-Supplied Keyword: Flux pinning; Author-Supplied Keyword: pulsed laser deposition; Author-Supplied Keyword: YBa2Cu3O7-x; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.3402324 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49034003&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Polak, M. AU - Mozola, P. AU - Barnes, P. N. AU - Levin, G. A. T1 - THE EFFECT OF A FILAMENT INTERRUPTION ON CURRENT-VOLTAGE CURVES AND CRITICAL CURRENTS OF FILAMENTARY YBCO TAPES WITH SUPERCONDUCTING BRIDGES. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2010/04/08/ VL - 1219 IS - 1 M3 - Article SP - 380 EP - 387 PB - American Institute of Physics SN - 0094243X AB - The interruption of a filament in filamentary YBCO conductors reduces the critical current of the tape along the whole length of the tape. Multiply connected filamentary YBCO superconducting tapes were previously proposed as a means to allow current sharing between filaments in case of such interruption. To study the efficiency of such architecture, we studied the I-V curves and critical currents of model filamentary YBCO tapes with 10 filaments ∼1 mm wide, which were interconnected by several superconducting bridges. The effect of a break in one or more filaments on the I-V curves, n-factor, and critical current of the model tape was measured and reported. The effect of the contact arrangements on the current distribution in the filaments of the tape was also studied. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTIVITY KW - ELECTRIC currents KW - METAL fibers KW - ELECTRIC conductivity KW - ELECTRIC potential KW - current sharing KW - defects KW - filament interruption KW - filamentary YBCO tapes N1 - Accession Number: 49034001; Polak, M. 1 Mozola, P. 1 Barnes, P. N. 2 Levin, G. A. 2; Affiliation: 1: Institute of Electrical Engineering Bratislava, 841 04, Slovak Republic. 2: Air Force Research Laboratory, Wright-Patterson AFB Dayton, Ohio, 45433, USA.; Source Info: 4/8/2010, Vol. 1219 Issue 1, p380; Subject Term: SUPERCONDUCTIVITY; Subject Term: ELECTRIC currents; Subject Term: METAL fibers; Subject Term: ELECTRIC conductivity; Subject Term: ELECTRIC potential; Author-Supplied Keyword: current sharing; Author-Supplied Keyword: defects; Author-Supplied Keyword: filament interruption; Author-Supplied Keyword: filamentary YBCO tapes; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.3402326 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49034001&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Freel, Keith AU - Friedman, Jeffrey F. AU - Miller, Thomas M. AU - Heaven, Michael C. AU - Viggiano, A. A. T1 - Electron attachment to chlorine azide at 298 and 400 K. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2010/04/07/ VL - 132 IS - 13 M3 - Article SP - 134308 PB - American Institute of Physics SN - 00219606 AB - Electron attachment to chlorine azide (ClN3) was studied using a flowing-afterglow Langmuir-probe apparatus. Electron attachment rates were measured to be 3.5×10-8 and 4.5×10-8 cm3 s-1 at 298 and 400 K, respectively, with an estimated 35% absolute accuracy. Cl- was the sole ion product of the attachment reaction; weak ion signals were observed for other anions and attributed to impurities and secondary ion-molecule reactions. Assuming a relative uncertainty of ±10% for these data, an activation energy for the attachment reaction may be given as 24±10 meV. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - CHLORINE compounds KW - AZIDES KW - IONS KW - ANIONS N1 - Accession Number: 49033938; Freel, Keith 1 Friedman, Jeffrey F. 2 Miller, Thomas M. 3,4; Email Address: thomas.miller@hanscom.af.mil Heaven, Michael C. 5 Viggiano, A. A. 3; Affiliation: 1: Chemistry Department, Emory University, Atlanta, Georgia. 2: Department of Physics, University of Puerto Rico, Mayaguez, Puerto Rico. 3: Space Vehicles Directorate, Air Force Research Laboratory, 29 Randolph Road, Hanscom Air Force Base, Massachusetts 01731-3010, USA. 4: Institute for Scientific Research, Boston College. 5: Department of Chemistry, Emory University, Atlanta, Georgia 30322, USA.; Source Info: 4/7/2010, Vol. 132 Issue 13, p134308; Subject Term: ELECTRONS; Subject Term: CHLORINE compounds; Subject Term: AZIDES; Subject Term: IONS; Subject Term: ANIONS; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 5p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.3386579 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49033938&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Williams, Christopher S. AU - Baker, William P. AU - Burggraf, Larry W. AU - Adamson, Paul E. AU - Petrosky, James C. T1 - Toward Simultaneous 2D ACAR and 2D DBAR: Sub-Pixel Spatial Characterization of a Segmented HPGe Detector Using Transient Charges. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2010/04/02/Apr2010 Part 2 of 2 VL - 57 IS - 2 M3 - Article SP - 860 EP - 869 SN - 00189499 AB - Sub-pixel spatial characterization of an Ortec HPGe double-sided strip detector was measured in preparation for its planned use in a positron annihilation spectrometer (PAS) to simultaneously measure the two-dimensional Angular Correlation (2D ACAR) and Doppler Broadening (2D DBAR) of Annihilation Radiation. Sr-85 514-keV photons were finely collimated onto the center of 25, equally spaced sub-pixels within a single 5-mm by 5-mm intrinsic pixel, using a collimator with an aperture diameter of 0.15 ± 0.05. The location of each full-energy recorded event was determined by analyzing the relative sizes of coincident transient charges on charge collection strips adjacent to the strip recording full-energy events. Interpolation, using ratios of the coincident transient charge sizes, was used to determine two-dimensional locations of full-energy events. Radial location data was fit to a function which describes a Gaussian point spread function uniformly distributed over a circular aperture. The standard deviation of the point spread function, 0.22 mm, is a measure of the spatial resolution of this detector system. The relative efficiency for detection of 514-keV photons across the intrinsic pixel was also measured. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANNIHILATION reactions KW - STANDARD deviations KW - POSITRON annihilation KW - ANGULAR correlations (Nuclear physics) KW - NUCLEAR reactions KW - PHOTONS KW - Image charge KW - segmented germanium KW - spatial resolution KW - transient charge N1 - Accession Number: 49533476; Williams, Christopher S. 1; Email Address: cwilliam@afit.edu Baker, William P. 2; Email Address: william.baker@afit.edu Burggraf, Larry W. 3; Email Address: larry.burggraf@afit.edu Adamson, Paul E. 4,5; Email Address: paul.adamson@kirtland.af.mil Petrosky, James C. 6; Email Address: james.petrosky@afit.edu; Affiliation: 1: Air Force Institute of Technology,Wright-Patterson AFB, OH 45433 USA 2: Mathematics, Air Force Institute of Technology,Wright- Patterson AFB, OH 45433 USA 3: Chemical Physics and Engineering Physics, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433 USA 4: High Power Microwave (HPM) Technologies Branch, HPM Division, Kirtland AFB, NM 87117 USA 5: Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117 USA 6: Nuclear Engineering, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433 USA; Source Info: Apr2010 Part 2 of 2, Vol. 57 Issue 2, p860; Subject Term: ANNIHILATION reactions; Subject Term: STANDARD deviations; Subject Term: POSITRON annihilation; Subject Term: ANGULAR correlations (Nuclear physics); Subject Term: NUCLEAR reactions; Subject Term: PHOTONS; Author-Supplied Keyword: Image charge; Author-Supplied Keyword: segmented germanium; Author-Supplied Keyword: spatial resolution; Author-Supplied Keyword: transient charge; Number of Pages: 10p; Illustrations: 3 Diagrams, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1109/TNS.2010.2040194 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49533476&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Razani, A. AU - Dodson, C. AU - Roberts, T. T1 - A model for exergy analysis and thermodynamic bounds of Stirling refrigerators JO - Cryogenics JF - Cryogenics Y1 - 2010/04// VL - 50 IS - 4 M3 - Article SP - 231 EP - 238 SN - 00112275 AB - Abstract: A thermodynamic model based on exergy flow through a Stirling Refrigerator is developed. Important irreversibilities of the refrigerator due to external heat transfer with the reservoirs, heat leak, flow and heat transfer in regenerator are included in the model. Expansion and compression efficiencies are introduced in the model to account for the losses in these processes. The effect of a control phase shift between the mass flow rate and pressure across regenerator on the performance of the refrigerator is presented. Analytical solutions representing important quantities in the design of Stirling refrigerators such as the load curve, cooling power and efficiency in terms of basic system input parameters are developed. Thermodynamic bounds for the performance of Stirling refrigerators are obtained. Results indicating a compromise between cooling power and efficiency that are dependent on the constraint of the system are presented and discussed. [Copyright &y& Elsevier] AB - Copyright of Cryogenics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HOUSEHOLD appliances KW - EXERGY KW - THERMODYNAMICS KW - REFRIGERATORS KW - HEAT transfer KW - INDUSTRIAL efficiency KW - THERMAL expansion KW - MASS transfer KW - EFFICIENCY KW - Cryocoolers KW - Cycle optimization KW - Exergy analysis KW - Stirling refrigerators KW - Thermodynamics N1 - Accession Number: 48893516; Razani, A. 1; Email Address: razani@unm.edu Dodson, C. 2 Roberts, T. 2; Affiliation: 1: Department of Mechanical Engineering, MSC01 1150, The University of New Mexico, Albuquerque, NM 87131, USA 2: Air Force Research Laboratory, Kirtland AFB, NM 87117-5776, USA; Source Info: Apr2010, Vol. 50 Issue 4, p231; Subject Term: HOUSEHOLD appliances; Subject Term: EXERGY; Subject Term: THERMODYNAMICS; Subject Term: REFRIGERATORS; Subject Term: HEAT transfer; Subject Term: INDUSTRIAL efficiency; Subject Term: THERMAL expansion; Subject Term: MASS transfer; Subject Term: EFFICIENCY; Author-Supplied Keyword: Cryocoolers; Author-Supplied Keyword: Cycle optimization; Author-Supplied Keyword: Exergy analysis; Author-Supplied Keyword: Stirling refrigerators; Author-Supplied Keyword: Thermodynamics; NAICS/Industry Codes: 443143 Appliance, television and other electronics stores; NAICS/Industry Codes: 423740 Refrigeration Equipment and Supplies Merchant Wholesalers; NAICS/Industry Codes: 423620 Household Appliances, Electric Housewares, and Consumer Electronics Merchant Wholesalers; NAICS/Industry Codes: 414220 Household appliance merchant wholesalers; NAICS/Industry Codes: 335223 Major kitchen appliance manufacturing; NAICS/Industry Codes: 811412 Appliance Repair and Maintenance; NAICS/Industry Codes: 335222 Household Refrigerator and Home Freezer Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.cryogenics.2009.12.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48893516&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morgan, Oliver W. AU - Parks, Sharyn AU - Shim, Trudi AU - Blevins, Patricia A. AU - Lucas, Pauline M. AU - Sanchez, Roger AU - Walea, Nancy AU - Loustalot, Fleetwood AU - Duffy, Mark R. AU - Shim, Matthew J. AU - Guerra, Sandra AU - Guerra, Fernando AU - Mills, Gwen AU - Verani, Jennifer AU - Alsip, Bryan AU - Lindstrom, Stephen AU - Shu, Bo AU - Emery, Shannon AU - Cohen, Adam L. AU - Menon, Manoj T1 - Household Transmission of Pandemic (H1N1) 2009, San Antonio, Texas, USA, April-May 2009. JO - Emerging Infectious Diseases JF - Emerging Infectious Diseases Y1 - 2010/04// VL - 16 IS - 4 M3 - Article SP - 631 EP - 637 PB - Centers for Disease Control & Prevention (CDC) SN - 10806040 AB - To assess household transmission of pandemic (H1N1) 2009 in San Antonio, Texas, USA, during April 15-May 8, 2009, we investigated 77 households. The index case-patient was defined as the household member with the earliest onset date of symptoms of acute respiratory infection (ARI), infl uenza-like illness (ILI), or laboratory-confirmed pandemic (H1N1) 2009. Median interval between illness onset in index and secondary case-patients was 4 days (range 1-9 days); the index case-patient was likely to be <18 years of age (p = 0.034). The secondary attack rate was 4% for pandemic (H1N1) 2009, 9% for ILI, and 13% for ARI. The secondary attack rate was highest for children <5 years of age (8%-19%) and lowest for adults >50 years of age (4%-12%). Early in the outbreak, household transmission primarily occurred from children to other household members and was lower than the transmission rate for seasonal influenza. [ABSTRACT FROM AUTHOR] AB - Copyright of Emerging Infectious Diseases is the property of Centers for Disease Control & Prevention (CDC) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PANDEMICS KW - INFLUENZA A virus, H1N1 subtype KW - INFLUENZA A virus KW - SWINE influenza KW - SAN Antonio (Tex.) KW - TEXAS N1 - Accession Number: 49259921; Morgan, Oliver W. 1; Email Address: omorgan@cdc.gov Parks, Sharyn 1,2 Shim, Trudi 2 Blevins, Patricia A. 3 Lucas, Pauline M. 4 Sanchez, Roger 3 Walea, Nancy 2 Loustalot, Fleetwood 1 Duffy, Mark R. 4 Shim, Matthew J. 4 Guerra, Sandra 2 Guerra, Fernando 3 Mills, Gwen 5 Verani, Jennifer 1 Alsip, Bryan 3 Lindstrom, Stephen 1 Shu, Bo 1 Emery, Shannon 1 Cohen, Adam L. 1 Menon, Manoj 1; Affiliation: 1: Centers for Disease Control and Prevention, Atlanta, Georgia, USA 2: Department of State Health Services, Austin, Texas, USA 3: San Antonio Metropolitan Health District, San Antonio, Texas, USA 4: United States Air Force School of Aerospace Medicine, Brooks City-Base, Texas, USA 5: Comal County Health Department, New Braunfels, Texas, USA; Source Info: Apr2010, Vol. 16 Issue 4, p631; Subject Term: PANDEMICS; Subject Term: INFLUENZA A virus, H1N1 subtype; Subject Term: INFLUENZA A virus; Subject Term: SWINE influenza; Subject Term: SAN Antonio (Tex.); Subject Term: TEXAS; Number of Pages: 7p; Illustrations: 3 Charts, 1 Map; Document Type: Article L3 - 10.3201/eid1604.091658 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49259921&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - QILIAN LIANG AU - XIUZHEN CHENG AU - SAMN, SHERWOOD W. T1 - NEW: Network-Enabled Electronic Warfare for Target Recognition. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2010/04// VL - 46 IS - 2 M3 - Article SP - 558 EP - 568 SN - 00189251 AB - Network-enabled electronic warfare (NEW) is the development of modeling and simulation efforts that explore the advantages and limitations of NEW concepts. The advantages of linking multiple electronic support measures (ESM) and electronic attack (EA) assets to achieve improved capabilities across a networked battle force have yet to be quantified. In this paper, we utilize radar sensors as ESM and EA assets to demonstrate the advantages of NEW in collaborative automatic target recognition (CATR). Signal (waveform) design for radar sensor networks (RSN) in NEW is studied theoretically. The conditions for waveform coexistence and the interferences among waveforms in RSN are analyzed. We apply the NEW to CATR via waveform diversity combining and propose maximum-likelihood (ML)-ATR algorithms for nonfluctuating targets as well as fluctuating targets. Simulation results indicate that our NEW-CATR performs much better than the single sensor-based ATR algorithm for nonfluctuating and fluctuating targets. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY electronics KW - TARGET acquisition KW - RADAR targets KW - DETECTORS KW - SENSOR networks N1 - Accession Number: 50544679; QILIAN LIANG 1; Email Address: liang@uta.edu XIUZHEN CHENG 2 SAMN, SHERWOOD W. 3; Affiliation: 1: University of Texas at Arlington 2: George Washington University 3: Air Force Research Laboratory; Source Info: Apr2010, Vol. 46 Issue 2, p558; Subject Term: MILITARY electronics; Subject Term: TARGET acquisition; Subject Term: RADAR targets; Subject Term: DETECTORS; Subject Term: SENSOR networks; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=50544679&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nixon, Michael E. AU - Cazacu, Oana AU - Lebensohn, Ricardo A. T1 - Anisotropic response of high-purity α-titanium: Experimental characterization and constitutive modeling JO - International Journal of Plasticity JF - International Journal of Plasticity Y1 - 2010/04// VL - 26 IS - 4 M3 - Article SP - 516 EP - 532 SN - 07496419 AB - Abstract: This paper presents a comprehensive experimental and theoretical investigation of the deformation behavior of high-purity, polycrystalline α-titanium under quasi-static conditions at room temperature. The initial material in this study was a cross-rolled plate with a strong basal texture. To quantify the plastic anisotropy and the tension–compression asymmetry of this material, monotonic tensile and compressive tests were conducted, on samples cut along different directions of the plate. A new anisotropic elastic/plastic model was developed to describe the quasi-static macroscopic response of the aggregate. Key in its formulation is the use of an anisotropic yield criterion that captures strength-differential effects and an anisotropic hardening rule that accounts for texture evolution associated to twinning. A very good agreement between FE simulations using the model developed and uniaxial data was obtained. [Copyright &y& Elsevier] AB - Copyright of International Journal of Plasticity is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM KW - ANISOTROPY KW - DEFORMATIONS (Mechanics) KW - TWINNING (Crystallography) KW - ORTHOTROPY (Mechanics) KW - ELASTOPLASTICITY KW - FINITE element method KW - MATHEMATICAL models KW - α-Titanium KW - Finite element KW - Orthotropic elasto-plastic model KW - Tension–compression asymmetry KW - Twinning N1 - Accession Number: 48471043; Nixon, Michael E. 1; Email Address: nixon@eglin.af.mil Cazacu, Oana 2; Email Address: cazacu@reef.ufl.edu Lebensohn, Ricardo A. 3; Email Address: lebenso@lanl.gov; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, USA 2: Department of Mechanical and Aerospace Engineering, University of Florida, REEF, 1350 N Poquito Road, Shalimar, FL 32539, USA 3: Los Alamos National Laboratory, MST Division, Los Alamos, NM 87545, USA; Source Info: Apr2010, Vol. 26 Issue 4, p516; Subject Term: TITANIUM; Subject Term: ANISOTROPY; Subject Term: DEFORMATIONS (Mechanics); Subject Term: TWINNING (Crystallography); Subject Term: ORTHOTROPY (Mechanics); Subject Term: ELASTOPLASTICITY; Subject Term: FINITE element method; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: α-Titanium; Author-Supplied Keyword: Finite element; Author-Supplied Keyword: Orthotropic elasto-plastic model; Author-Supplied Keyword: Tension–compression asymmetry; Author-Supplied Keyword: Twinning; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.ijplas.2009.08.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48471043&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - White, Timothy J. AU - Freer, Alexander S. AU - Tabiryan, Nelson V. AU - Bunning, Timothy J. T1 - Photoinduced broadening of cholesteric liquid crystal reflectors. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/04// VL - 107 IS - 7 M3 - Article SP - 073110 EP - 073116 PB - American Institute of Physics SN - 00218979 AB - The selective reflection of cholesteric liquid crystals (CLCs) is well-known and has been utilized in a number of dynamic optical applications. This work presents a novel approach to passively (e.g., all-optically) cue reflection notch broadening in photoresponsive CLC formulations based on high helical twisting power (HTP) bis(azo) chiral dopants. The original reflection bandwidth of approximately 100 nm is increased to as much as 1700 nm, by exposing 36 μm thick cells to UV light. The maximum attainable bandwidth is shown to be a function of cell thickness, light intensity, and strongly related to the HTP of the photoresponsive chiral dopants. An all-optical technique of simultaneous UV and green light exposure is demonstrated to trap the reflection notch at a predetermined position and bandwidth. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS research KW - LIQUID crystal devices KW - OPTOELECTRONIC devices KW - SEMICONDUCTOR doping KW - SEMICONDUCTOR industry KW - PARTICLES (Nuclear physics) -- Chirality KW - REFLECTANCE N1 - Accession Number: 49193209; White, Timothy J. 1 Freer, Alexander S. 1,2 Tabiryan, Nelson V. 3 Bunning, Timothy J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Ohio 45433, 2: Azimuth Corporation, Dayton, Ohio 45433, 3: BEAM Engineering for Advanced Measurements, 809 S. Orlando Avenue Ste. 1, Winter Park, Florida 32789,; Source Info: Apr2010, Vol. 107 Issue 7, p073110; Subject Term: PHYSICS research; Subject Term: LIQUID crystal devices; Subject Term: OPTOELECTRONIC devices; Subject Term: SEMICONDUCTOR doping; Subject Term: SEMICONDUCTOR industry; Subject Term: PARTICLES (Nuclear physics) -- Chirality; Subject Term: REFLECTANCE; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 6p; Illustrations: 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1063/1.3369437 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49193209&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bliss, David AU - Wang, Buguo AU - Suscavage, Michael AU - Lancto, Robert AU - Swider, Stacy AU - Eikenberry, Wayne AU - Lynch, Candace T1 - Ammonothermal GaN: Morphology and properties JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2010/04// VL - 312 IS - 8 M3 - Article SP - 1069 EP - 1073 SN - 00220248 AB - Abstract: Bulk crystals of gallium nitride have been grown using the ammonothermal method. Seeded growth resulted in thick, faceted GaN specimens. The crystal habit was identified and consisted of a hexagonal prism with pyramidal facets. Fast growth rates were observed on the nitrogen face and in the a-direction. The surface morphology and etching characteristics varied by growth sector. These differences have been correlated with characterization by X-ray diffraction, photoluminescence, and secondary ion mass spectroscopy. The material grown on the nitrogen face of the seed was of higher quality than the gallium face growth. The most promising material was grown laterally off the seed in the a-direction. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - CRYSTAL growth KW - SEMICONDUCTORS -- Etching KW - NITROGEN KW - SURFACES (Technology) KW - SOLUTION (Chemistry) KW - X-ray diffraction KW - PHOTOLUMINESCENCE KW - A1. Characterization KW - A2. Growth from solutions KW - B1. Nitrides N1 - Accession Number: 48895141; Bliss, David 1 Wang, Buguo 2 Suscavage, Michael 1 Lancto, Robert 2 Swider, Stacy 2 Eikenberry, Wayne 1 Lynch, Candace 1; Email Address: candace.lynch@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, 80 Scott Drive, Hanscom AFB, MA 01731, United States 2: Solid State Scientific Corporation, Hollis, NH; Source Info: Apr2010, Vol. 312 Issue 8, p1069; Subject Term: GALLIUM nitride; Subject Term: CRYSTAL growth; Subject Term: SEMICONDUCTORS -- Etching; Subject Term: NITROGEN; Subject Term: SURFACES (Technology); Subject Term: SOLUTION (Chemistry); Subject Term: X-ray diffraction; Subject Term: PHOTOLUMINESCENCE; Author-Supplied Keyword: A1. Characterization; Author-Supplied Keyword: A2. Growth from solutions; Author-Supplied Keyword: B1. Nitrides; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jcrysgro.2009.12.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48895141&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Houchens, Brent C. AU - Becla, Piotr AU - Tritchler, Stephanie E. AU - Goza, Andres J. AU - Bliss, David F. T1 - Crystal growth of bulk ternary semiconductors: Comparison of GaInSb growth by horizontal Bridgman and horizontal traveling heater method JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2010/04// VL - 312 IS - 8 M3 - Article SP - 1090 EP - 1094 SN - 00220248 AB - Abstract: Results from the growth of bulk Ga1−x In x Sb crystals are presented. The primary challenge for ternary crystal growth is to control the composition and electrical resistivity while also reducing the concentration of defects. A modified horizontal traveling heater method (HTHM) growth process is described which accomplishes these goals. This method uses excess indium as a solvent, allowing growth of the ternary crystal at a given composition, below the liquidus temperature of the desired alloy. Lower temperature growth reduces the density of native defects such as gallium vacancies. The horizontal traveling heater method produces a zone-leveling effect on the alloy composition, so that a uniform composition crystal is obtained. The solute distribution achieved by HTHM is compared with a crystal grown by the horizontal Bridgman method. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL growth KW - SEMICONDUCTORS KW - TERNARY alloys KW - FUSION (Phase transformation) KW - ANTIMONY compounds KW - ELECTRIC resistance KW - TEMPERATURE effect KW - COMPARATIVE studies KW - A1. Segregation KW - A2. Growth from melt KW - B1. Antimonides KW - B2. Semiconducting ternary compounds N1 - Accession Number: 48895145; Houchens, Brent C. 1; Email Address: houchens@rice.edu Becla, Piotr 2 Tritchler, Stephanie E. 1 Goza, Andres J. 1 Bliss, David F. 3; Affiliation: 1: Rice University, Houston, TX, USA 2: Solid State Scientific Corp., Nashua, NH, USA 3: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA, USA; Source Info: Apr2010, Vol. 312 Issue 8, p1090; Subject Term: CRYSTAL growth; Subject Term: SEMICONDUCTORS; Subject Term: TERNARY alloys; Subject Term: FUSION (Phase transformation); Subject Term: ANTIMONY compounds; Subject Term: ELECTRIC resistance; Subject Term: TEMPERATURE effect; Subject Term: COMPARATIVE studies; Author-Supplied Keyword: A1. Segregation; Author-Supplied Keyword: A2. Growth from melt; Author-Supplied Keyword: B1. Antimonides; Author-Supplied Keyword: B2. Semiconducting ternary compounds; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jcrysgro.2009.12.051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48895145&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zawilski, Kevin T. AU - Schunemann, Peter G. AU - Pollak, Thomas C. AU - Zelmon, David E. AU - Fernelius, Nils C. AU - Kenneth Hopkins, F. T1 - Growth and characterization of large CdSiP2 single crystals JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2010/04// VL - 312 IS - 8 M3 - Article SP - 1127 EP - 1132 SN - 00220248 AB - Abstract: Large, optically transparent crystals of CdSiP2 (CSP) have been grown for the first time from a stoichiometric melt. The material is a high temperature analog to ZnGeP2 with promising characteristics for IR frequency conversion. Crystals are birefringent and are transparent from 0.5 to 9μm. Polycrystalline charges were successfully synthesized from high purity elemental starting materials by two-temperature vapor transport despite the very high equilibrium vapor pressure (∼22atm) at the melting point of CdSiP2 (1133°C). Single crystals were grown using the horizontal gradient freeze (HGF) technique in high-temperature transparent furnaces. Over the course of several growth runs, the material proved to be prone to cracking and to twinning along (112) planes. Twinning was eliminated by seeded growth along directions normal to the 112 planar boundaries. Further modifications to growth conditions resulted in high optical quality, crack- and twin-free single crystals 70×25×8mm3. The largest CdSiP2 single crystals previously reported in the literature were grown through either halogen assisted vapor transport or from a molten Sn flux and measured 2×2×0.2mm3. The HGF growth of large CdSiP2 crystals has allowed several bulk properties to be measured for the first time, including the thermal expansion coefficients, thermal conductivity, and wavelength dependent birefringence and dispersion. Measurements of the optical and thermal properties reveal this to be an extremely promising material for 1-, 1.5-, and 2μm-pumped mid-IR lasers. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL growth KW - NONLINEAR optics KW - TERNARY alloys KW - PHOSPHIDES KW - STOICHIOMETRY KW - FUSION (Phase transformation) KW - HIGH temperatures KW - SOLIDIFICATION KW - A1. Directional solidification KW - A1. Optical spectra KW - A2. Gradient freeze technique KW - B2. Non-linear optic materials N1 - Accession Number: 48895153; Zawilski, Kevin T. 1; Email Address: zawilski@stanfordalumni.org Schunemann, Peter G. 1 Pollak, Thomas C. 1 Zelmon, David E. 2 Fernelius, Nils C. 2 Kenneth Hopkins, F. 2; Affiliation: 1: BAE Systems, P.O. Box 868, MER15-1813, Nashua, NH 03061-0868, USA 2: US Air Force Research Laboratory, AFRL/RXPS, Bldg. 651, 3005 Hobson Way, Wright-Patterson AFB OH 45433-7707, USA; Source Info: Apr2010, Vol. 312 Issue 8, p1127; Subject Term: CRYSTAL growth; Subject Term: NONLINEAR optics; Subject Term: TERNARY alloys; Subject Term: PHOSPHIDES; Subject Term: STOICHIOMETRY; Subject Term: FUSION (Phase transformation); Subject Term: HIGH temperatures; Subject Term: SOLIDIFICATION; Author-Supplied Keyword: A1. Directional solidification; Author-Supplied Keyword: A1. Optical spectra; Author-Supplied Keyword: A2. Gradient freeze technique; Author-Supplied Keyword: B2. Non-linear optic materials; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jcrysgro.2009.10.034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48895153&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Giles, N.C. AU - Halliburton, L.E. AU - Yang, Shan AU - Yang, Xiaocheng AU - Brant, A.T. AU - Fernelius, N.C. AU - Schunemann, P.G. AU - Zawilski, K.T. T1 - Optical and EPR study of point defects in CdSiP2 crystals JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2010/04// VL - 312 IS - 8 M3 - Article SP - 1133 EP - 1137 SN - 00220248 AB - Abstract: Optical absorption and electron paramagnetic resonance (EPR) are used to identify and characterize point defects in large single crystals of cadmium silicon phosphide (CdSiP2) grown by the horizontal gradient freeze method. The dominant native defects in these crystals are cadmium vacancies and phosphorus vacancies, and the primary unintentional impurities are Fe+, Fe2+, Fe4+, and Mn2+ ions. Optical absorption in the region between 1.5 and 2.5μm was studied at temperatures from 10 to 300K. At lower temperatures, zero-phonon lines and phonon sidebands observed near 1.87μm are assigned to Fe2+ ions (similar features observed at 10K near 1.08μm are assigned to Fe4+ ions). At higher temperatures, an unidentified absorption band has a peak near 1.95μm and a vibronically broadened absorption band due to the Fe2+ ions has a peak near 1.75μm. EPR lines due to Fe+ and Mn2+ ions appear near g=2. Illumination at 5K with 632.8nm laser light produces changes in the intensity of the Fe+ EPR spectrum and introduces a three-line EPR spectrum caused by hyperfine interactions with two phosphorus nuclei. This latter spectrum is assigned to singly ionized cadmium vacancies (). Optical and EPR results from two CdSiP2 samples exhibiting different defect behaviors are compared. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POINT defects KW - PHOSPHIDES KW - TERNARY alloys KW - ELECTRON paramagnetic resonance spectroscopy KW - NONLINEAR optics KW - ABSORPTION KW - CRYSTAL growth KW - TEMPERATURE effect KW - A1. Point defects KW - A2. Gradient freeze technique KW - B2. Nonlinear optical materials N1 - Accession Number: 48895154; Giles, N.C. 1; Email Address: nancy.giles@afit.edu Halliburton, L.E. 2 Yang, Shan 2 Yang, Xiaocheng 2 Brant, A.T. 2 Fernelius, N.C. 3 Schunemann, P.G. 4 Zawilski, K.T. 4; Affiliation: 1: Engineering Physics Department, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH 45433, USA 2: Physics Department, West Virginia University, Morgantown, WV 26506, USA 3: Air Force Research Laboratory (AFRL/RXPS), Wright-Patterson Air Force Base, OH 45433, USA 4: BAE Systems, MER15-1813, P.O. Box 868, Nashua, NH 03061, USA; Source Info: Apr2010, Vol. 312 Issue 8, p1133; Subject Term: POINT defects; Subject Term: PHOSPHIDES; Subject Term: TERNARY alloys; Subject Term: ELECTRON paramagnetic resonance spectroscopy; Subject Term: NONLINEAR optics; Subject Term: ABSORPTION; Subject Term: CRYSTAL growth; Subject Term: TEMPERATURE effect; Author-Supplied Keyword: A1. Point defects; Author-Supplied Keyword: A2. Gradient freeze technique; Author-Supplied Keyword: B2. Nonlinear optical materials; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jcrysgro.2009.10.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48895154&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Singh, N.B. AU - Kanner, G.S. AU - Berghmans, A. AU - Kahler, D. AU - Lin, A. AU - Wagner, B. AU - Kelley, S.P. AU - Knuteson, D.J. AU - Holmstrom, R. AU - Schepler, K.L. AU - Peterson, R. AU - Fejer, M.M. AU - Harris, J.S. T1 - Characteristics of thick ZnSe films on quasi-phase-matched (QPM) GaAs substrates JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2010/04// VL - 312 IS - 8 M3 - Article SP - 1142 EP - 1145 SN - 00220248 AB - Abstract: We have grown and characterized thick zinc selenide (ZnSe) films up to millimeter thickness on unpatterned gallium arsenide (GaAs) wafers and orientation-patterned substrates by physical vapor transport. The patterns were designed to achieve alternating [001] and [001¯] orientations. The quality of the films was evaluated by X-ray diffraction, scanning electron microscopy (SEM), and anisotropic etching to determine the morphology and crystallinity. ZnSe films grew epitaxially on the templates and X-ray rocking curves showed full widths at half maximum (FWHM) less than 0.2°. Orientation-patterning up to hundreds of microns film thickness was verified by SEM and etching profiles. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC selenide KW - SEMICONDUCTOR films KW - THICK films KW - GALLIUM arsenide semiconductors KW - CRYSTAL growth KW - THICKNESS measurement KW - SEMICONDUCTOR wafers KW - SECOND harmonic generation KW - X-ray diffraction KW - A3. Physical vapor transport (PVT) KW - B1. Zinc selenide KW - B3. Optical parametric amplification (OPA) KW - B3. Quasi-phase-matching (QPM) KW - B3. Second harmonic generation (SHG) N1 - Accession Number: 48895156; Singh, N.B. 1; Email Address: nb.singh@ngc.com Kanner, G.S. 2; Email Address: gary.kanner@ngc.com Berghmans, A. 1 Kahler, D. 1 Lin, A. 3 Wagner, B. 1 Kelley, S.P. 2 Knuteson, D.J. 1 Holmstrom, R. 2 Schepler, K.L. 4 Peterson, R. 4 Fejer, M.M. 5 Harris, J.S. 3; Affiliation: 1: Northrop Grumman Electronic Systems, 1212 Winterson Road, Linthicum, MD 21090, USA 2: Northrop Grumman Electronic Systems, 600 Hicks Road, Rolling Meadows, IL 60008, USA 3: Solid State Photonics Laboratory, Stanford University, Stanford, CA 94305, USA 4: Air Force Research Laboratory/RYJW, Wright-Patterson AFB, OH 45433, USA 5: E.L. Gintzon Laboratory, Stanford University, Stanford, CA 94305, USA; Source Info: Apr2010, Vol. 312 Issue 8, p1142; Subject Term: ZINC selenide; Subject Term: SEMICONDUCTOR films; Subject Term: THICK films; Subject Term: GALLIUM arsenide semiconductors; Subject Term: CRYSTAL growth; Subject Term: THICKNESS measurement; Subject Term: SEMICONDUCTOR wafers; Subject Term: SECOND harmonic generation; Subject Term: X-ray diffraction; Author-Supplied Keyword: A3. Physical vapor transport (PVT); Author-Supplied Keyword: B1. Zinc selenide; Author-Supplied Keyword: B3. Optical parametric amplification (OPA); Author-Supplied Keyword: B3. Quasi-phase-matching (QPM); Author-Supplied Keyword: B3. Second harmonic generation (SHG); NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jcrysgro.2009.12.054 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48895156&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tassev, Vladimir AU - Bliss, David AU - Lynch, Candace AU - Yapp, Calvin AU - Goodhue, William AU - Termkoa, Krongtip T1 - Low pressure–temperature–gas flow HVPE growth of GaP for nonlinear optical frequency conversion devices JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2010/04// VL - 312 IS - 8 M3 - Article SP - 1146 EP - 1149 SN - 00220248 AB - Abstract: This paper describes advances in the development of quasi-phase-matched (QPM) gallium phosphide (GaP) crystals for agile laser sources in the mid-infrared regions between 3–5 and 8–12μm. In the quest for a nonlinear optical material with the potential to efficiently convert near infrared energy (wavelength ∼1μm) to a powerful mid-infrared source, we have investigated the growth of GaP by hydride vapor phase epitaxy (HVPE). The process is shown to produce high quality thick layers at rapid growth rates in a low-pressure horizontal reactor. This process was used to grow thick layers on orientation-patterned (OP) templates. The OP-GaP templates were fabricated by lithographic patterning of inverted wafer-fused GaP. HVPE growth on both OP-GaP and OP-GaAs templates was performed, showing that HVPE can successfully replicate the initial template pattern. However, for longer growth duration at given conditions the patterned structure can be lost, with annihilation of every other domain. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS flow KW - CRYSTAL growth KW - LOW pressure (Science) KW - TEMPERATURE effect KW - PHOSPHIDES KW - CHEMICAL vapor deposition KW - SEMICONDUCTORS KW - NONLINEAR optics KW - A3. Hydride vapor phase epitaxy KW - B1. Gallium phosphide and gallium arsenide KW - B2. Nonlinear optic materials N1 - Accession Number: 48895157; Tassev, Vladimir 1; Email Address: Vladimir.Tassev@hanscom.af.mil Bliss, David 1 Lynch, Candace 1 Yapp, Calvin 2 Goodhue, William 3 Termkoa, Krongtip 3; Affiliation: 1: Air Force Research Laboratory, AFRL/RYHC Hanscom AFB, MA 01731, USA 2: Solid State Scientific Corporation, Hollis, NH 03049, USA 3: University of Massachusetts, Photonic Center, Lowell, MA 01854, USA; Source Info: Apr2010, Vol. 312 Issue 8, p1146; Subject Term: GAS flow; Subject Term: CRYSTAL growth; Subject Term: LOW pressure (Science); Subject Term: TEMPERATURE effect; Subject Term: PHOSPHIDES; Subject Term: CHEMICAL vapor deposition; Subject Term: SEMICONDUCTORS; Subject Term: NONLINEAR optics; Author-Supplied Keyword: A3. Hydride vapor phase epitaxy; Author-Supplied Keyword: B1. Gallium phosphide and gallium arsenide; Author-Supplied Keyword: B2. Nonlinear optic materials; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jcrysgro.2009.12.053 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48895157&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Castellan, Enzo AU - Shah, Sandeep R. AU - Raj, Rishi T1 - Compression Creep of Alumina Containing Interfacial Silicon, Carbon, and Nitrogen, Derived from a Polysilazane Precursor. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2010/04// VL - 93 IS - 4 M3 - Article SP - 954 EP - 958 PB - Wiley-Blackwell SN - 00027820 AB - Silicon, carbon, and nitrogen were introduced into alumina polycrystals by in situ pyrolysis of a polysilazane precursor. These specimens were tested in compression creep from 1300° to 1400°C at stresses ranging from 60 to 120 MPa. The creep rates were comparable with those obtained by Thompson and colleagues. in nanocomposites, which had been fabricated by the powder route from alumina and silicon carbide. The convergence of these two data sets suggests that the retardation of creep rate in these composites is likely due to a chemical alteration of the grain boundaries in alumina, which either retards interfacial diffusion or creates an interface reaction barrier to diffusional creep, or both. A threshold stress and the absence of primary creep are unusual manifestations of the present experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM oxide KW - SILICON KW - CARBON KW - NITROGEN KW - NANOCOMPOSITE materials KW - POLYCRYSTALS KW - PYROLYSIS KW - CHEMICAL reactions KW - NANOSTRUCTURED materials KW - DIFFUSION N1 - Accession Number: 48942358; Castellan, Enzo 1,2 Shah, Sandeep R. 3 Raj, Rishi 1; Email Address: rishi.raj@colorado.edu; Affiliation: 1: Department of Mechanical Engineering, University of Colorado at Boulder, Boulder, Colorado 80309 0427. 2: Department of Materials Engineering and Industrial Technologies (DIMTI), University of Trento, Trento, Italy. 3: Department of Engineering Mechanics, Center for Aircraft Structural Life Extension (CAStLE), United States Air Force Academy, USAF Academy, Colorado 80840.; Source Info: Apr2010, Vol. 93 Issue 4, p954; Subject Term: ALUMINUM oxide; Subject Term: SILICON; Subject Term: CARBON; Subject Term: NITROGEN; Subject Term: NANOCOMPOSITE materials; Subject Term: POLYCRYSTALS; Subject Term: PYROLYSIS; Subject Term: CHEMICAL reactions; Subject Term: NANOSTRUCTURED materials; Subject Term: DIFFUSION; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 5p; Illustrations: 3 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2009.03515.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48942358&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wroblewski, Donald E. AU - Coté, Owen R. AU - Hacker, Jorg M. AU - Dobosy, Ronald J. T1 - Velocity and Temperature Structure Functions in the Upper Troposphere and Lower Stratosphere from High-Resolution Aircraft Measurements. JO - Journal of the Atmospheric Sciences JF - Journal of the Atmospheric Sciences Y1 - 2010/04// VL - 67 IS - 4 M3 - Article SP - 1157 EP - 1170 PB - American Meteorological Society SN - 00224928 AB - High-resolution measurements obtained from NOAA “best” atmospheric turbulence (BAT) probes mounted on an EGRETT high-altitude research aircraft were used to characterize turbulence in the upper troposphere and lower stratosphere at scales from 2 m to 20 km, focusing on three-dimensional behavior in the sub-kilometer-scale range. Data were analyzed for 129 separate level flight segments representing 41 h of flight time and 12 600 km of wind-relative flight distances. The majority of flights occurred near the tropopause layer of the winter subtropical jet stream in the Southern Hemisphere. Second-order structure functions for velocity and temperature were analyzed for the separate level-flight segments, individually and in various ensembles. A 3D scaling range was observed at scales less than about 100 m, with power-law exponents for the structure functions of the velocity component in the flight direction varying mostly between 0.4 and 0.75 for the separate flight segments, but close to 2/3 for the ensemble-averaged curves for all levels and for various subensembles. Structure functions in the 3D scaling range were decoupled from those at scales greater than 10 km, with the large-scale structure functions showing less variation than those at smaller scales. Weakly anisotropic behavior was observed in the 3D range, with structure parameters for the lateral and vertical velocities on the same order as those in the flight direction but deviating from the expected isotropic value. Anisotropy was correlated with turbulence intensity, with greater anisotropy associated with weaker turbulence. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Atmospheric Sciences is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPEED KW - TEMPERATURE KW - TROPOSPHERE KW - ATMOSPHERIC turbulence KW - ANISOTROPY KW - Aircraft observations KW - Stratosphere KW - Temperature KW - Upper troposphere KW - Wind N1 - Accession Number: 52009532; Wroblewski, Donald E. 1; Email Address: dew11@bu.edu Coté, Owen R. 2 Hacker, Jorg M. 3 Dobosy, Ronald J. 4; Affiliation: 1: Mechanical Engineering Department, Boston University, Boston, Massachusetts 2: Air Force Research Laboratory, Hanscom AFB, Bedford, Massachusetts 3: Flinders University, Adelaide, South Australia, Australia 4: NOAA/ARL, Oak Ridge, Tennessee; Source Info: Apr2010, Vol. 67 Issue 4, p1157; Subject Term: SPEED; Subject Term: TEMPERATURE; Subject Term: TROPOSPHERE; Subject Term: ATMOSPHERIC turbulence; Subject Term: ANISOTROPY; Author-Supplied Keyword: Aircraft observations; Author-Supplied Keyword: Stratosphere; Author-Supplied Keyword: Temperature; Author-Supplied Keyword: Upper troposphere; Author-Supplied Keyword: Wind; Number of Pages: 14p; Illustrations: 2 Charts, 12 Graphs; Document Type: Article L3 - 10.1175/2009JAS3108.1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52009532&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rockwell, Benjamin A. AU - Thomas, Robert J. AU - Vogel, Alfred T1 - Ultrashort laser pulse retinal damage mechanisms and their impact on thresholds T2 - Schädigungsmechanismen der Retina durch ultrakurze Laserpulse und ihr Einfluss auf Grenzwerte JO - Medical Laser Application JF - Medical Laser Application Y1 - 2010/04// VL - 25 IS - 2 M3 - Article SP - 84 EP - 92 SN - 16151615 AB - Abstract: Ultrashort laser pulses have been adapted for use in a variety of applications from micromachining of dielectrics to atmospheric spectrochemistry and multiphoton microscopy. These lasers emit almost exclusively in the retinal hazard wavelength regime, making them potential sources for accidental vision loss, but also candidates for biomedical applications where precise alteration of tissues is an objective. The present article reviews the mechanisms for damaging the retina at the threshold for the lowest energy, where any change in tissue is barely perceptible. For laser pulses between several picoseconds and 10μs, the threshold retinal damage is caused by microbubble formation around melanosomes in the retinal pigment epithelium (RPE). Below 1ns, both stress confinement in melanosomes and self-focusing reduce the threshold for damage as measured in corneal radiant exposure, although the mechanism for damage is the same. Below several picoseconds, laser-induced breakdown produces intra-retinal damage, sparing the RPE at threshold levels. These mechanisms have been determined in the past decade and provide an understanding of trends in retinal damage with variation in laser parameters, but also elucidate potential techniques for producing precise alteration to tissues. (English) [Copyright &y& Elsevier] AB - Zusammenfassung: Ultrakurz gepulste Laser werden in einer Vielzahl von Anwendungen eingesetzt, von der Mikrobearbeitung dielektrischer Materialien, über die Atmosphärenspektroskopie bis zur Multiphotonen-Mikroskopie. Diese Laser strahlen fast ausschließlich im netzhautgefährdenden Wellenlängenbereich, wodurch sie zu potentiellen Quellen eines unfallbedingten Verlusts der Sehfähigkeit werden, aber auch zu Kandidaten für biomedizinische Anwendungen, bei denen es auf präzise Gewebemodifikationen ankommt. Dieser Artikel gibt einen Überblick über die Schädigungsmechanismen der Netzhaut an den niedrigsten Energieschwellen, an denen eine gerade wahrnehmbare Veränderung des Gewebes eintritt. Für Laserpulsdauern zwischen einigen Pikosekunden und zehn Mikrosekunden wird die Schädigungsschwelle durch die Bildung von Mikrobläschen um die Melanosomen im retinalen Pigmentepithel (RPE) bestimmt. Unterhalb von einer Nanosekunde reduzieren sowohl das „stress confinement” in den Melanosomen als auch die Selbstfokussierung die (als Bestrahlung der Hornhaut gemessene) Schädigungsschwelle, obwohl der Schädigungsmechanismus derselbe ist. Unterhalb einiger Pikosekunden erzeugen laserinduzierte optische Durchbrüche Schäden innerhalb der Netzhaut, wobei an der Schädigungsschwelle das RPE unbeeinflusst bleibt. Diese im Laufe des letzten Jahrzehnts entdeckten Mechanismen machen die Abhängigkeiten der Netzhautschäden von den Laserparametern verständlich, werfen aber auch ein Licht auf mögliche Techniken zur Erzeugung präziser Gewebeveränderungen. a) is the anode radius, the difference in the two models becomes significant. When b/a=4 the difference is acute, the Buneman–Hartree magnetic field at a given voltage in the Brillouin flow model exceeds four times that in the single particle model. Such a difference is always present, whether the voltage is relativistic or not. These results are quantified for b/a>1 using Davidson’s model, conveniently cast in terms of the normalized gap voltage and normalized magnetic flux imposed on the cylindrical magnetron. A comparison with the University of Michigan/L-3 relativistic magnetron experiment is given. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - ELECTRIC oscillators KW - CATHODES KW - MAGNETIC flux KW - MAGNETIC fields N1 - Accession Number: 48912154; Lau, Y. Y. 1; Email Address: yylau@umich.edu Luginsland, J. W. 2 Cartwright, K. L. 3 Simon, D. H. 1 Tang, W. 1,3 Hoff, B. W. 1,3 Gilgenbach, R. M. 1; Affiliation: 1: Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109-2104, USA. 2: Air Force Office of Scientific Research, Arlington, Virginia 22203, USA. 3: Air Force Research Laboratory, Kirtland AFB, New Mexico 87117, USA.; Source Info: Mar2010, Vol. 17 Issue 3, p033102; Subject Term: MAGNETRONS; Subject Term: ELECTRIC oscillators; Subject Term: CATHODES; Subject Term: MAGNETIC flux; Subject Term: MAGNETIC fields; Number of Pages: 9p; Illustrations: 2 Diagrams, 6 Graphs; Document Type: Article L3 - 10.1063/1.3328804 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48912154&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Allred, Clark L. AU - Della-Rose, Devin J. AU - Flusche, Brian M. AU - Kiziah, Rex R. AU - Lee, David J. T1 - Explaining Electromagnetic Plane Waves in a Vacuum at the Introductory Level. JO - Physics Teacher JF - Physics Teacher Y1 - 2010/03// VL - 48 IS - 3 M3 - Article SP - 173 EP - 175 SN - 0031921X AB - The article presents the views of the authors on how to explain the properties of electromagnetic plane waves in a vacuum at the introductory course level. It emphasizes that instructors must employ the differential form of Maxwell's equations and the concept of vorticity to allow the students to comprehend the relationship between the electric and magnetic fields in an electromagnetic plane wave in vacuum. A solution to a simple common law problem of Michael Faraday is also presented. KW - ELECTROMAGNETIC waves KW - MAXWELL equations KW - VORTEX motion KW - ELECTRIC fields KW - MAGNETIC fields KW - FARADAY, Michael, 1791-1867 N1 - Accession Number: 48404958; Allred, Clark L. 1 Della-Rose, Devin J. 1 Flusche, Brian M. 1 Kiziah, Rex R. 1 Lee, David J. 1; Affiliation: 1: United States Air Force Academy, Colorado Springs, CO; Source Info: Mar2010, Vol. 48 Issue 3, p173; Subject Term: ELECTROMAGNETIC waves; Subject Term: MAXWELL equations; Subject Term: VORTEX motion; Subject Term: ELECTRIC fields; Subject Term: MAGNETIC fields; People: FARADAY, Michael, 1791-1867; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48404958&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cooper, John AU - Yazvenko, Nina AU - Peyvan, Kia AU - Maurer, Karl AU - Taitt, Chris R. AU - Lyon, Wanda AU - Danley, David L. T1 - Targeted Deposition of Antibodies on a Multiplex CMOS Microarray and Optimization of a Sensitive Immunoassay Using Electrochemical Detection. JO - PLoS ONE JF - PLoS ONE Y1 - 2010/03// VL - 5 IS - 3 M3 - Article SP - 1 EP - 13 PB - Public Library of Science SN - 19326203 AB - Background: The CombiMatrix ElectraSense® microarray is a highly multiplex, complementary metal oxide semiconductor with 12,544 electrodes that are individually addressable. This platform is commercially available as a custom DNA microarray; and, in this configuration, it has also been used to tether antibodies (Abs) specifically on electrodes using complementary DNA sequences conjugated to the Abs. Methodology/Principal Findings: An empirical method is described for developing and optimizing immunoassays on the CombiMatrix ElectraSense® microarray based upon targeted deposition of polypyrrole (Ppy) and capture Ab. This process was automated using instrumentation that can selectively apply a potential or current to individual electrodes and also measure current generated at the electrodes by an enzyme-enhanced electrochemical (ECD) reaction. By designating groups of electrodes on the array for different Ppy deposition conditions, we determined that the sensitivity and specificity of a sandwich immunoassay for staphylococcal enterotoxin B (SEB) is influenced by the application of different voltages or currents and the application time. The sandwich immunoassay used a capture Ab adsorbed to the Ppy and a reporter Ab labeled for fluorescence detection or ECD, and results from these methods of detection were different. Conclusions/Significance: Using Ppy deposition conditions for optimum results, the lower limit of detection for SEB using the ECD assay was between 0.003 and 0.01 pg/ml, which represents an order of magnitude improvement over a conventional enzyme-linked immunosorbant assay. In the absence of understanding the variables and complexities that affect assay performance, this highly multiplexed electrode array provided a rapid, high throughput, and empirical approach for developing a sensitive immunoassay. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMMUNOGLOBULINS KW - ELECTRODES KW - ANTIGENS KW - IMMUNOASSAY KW - COMPLEMENTARY metal oxide semiconductors KW - DNA KW - NUCLEIC acids KW - ENZYMES KW - NUCLEOTIDE sequence N1 - Accession Number: 56440378; Cooper, John 1 Yazvenko, Nina 1 Peyvan, Kia 1 Maurer, Karl 1 Taitt, Chris R. 2 Lyon, Wanda 3 Danley, David L. 1; Email Address: ddanley@combimatrix.com; Affiliation: 1: CombiMatrix Corporation, Mukilteo, Washington, United States of America. 2: United States Naval Research Laboratory, Washington, D.C., United States of America. 3: Air Force Research Laboratory, Dayton, Ohio, United States of America.; Source Info: 2010, Vol. 5 Issue 3, p1; Subject Term: IMMUNOGLOBULINS; Subject Term: ELECTRODES; Subject Term: ANTIGENS; Subject Term: IMMUNOASSAY; Subject Term: COMPLEMENTARY metal oxide semiconductors; Subject Term: DNA; Subject Term: NUCLEIC acids; Subject Term: ENZYMES; Subject Term: NUCLEOTIDE sequence; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; NAICS/Industry Codes: 325414 Biological Product (except Diagnostic) Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1371/journal.pone.0009781 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=56440378&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kahler, S. AU - Jibben, P. AU - DeLuca, E. E. T1 - TRACE Observations of Changes in Coronal Hole Boundaries. JO - Solar Physics JF - Solar Physics Y1 - 2010/03// VL - 262 IS - 1 M3 - Article SP - 135 EP - 147 PB - Springer Science & Business Media B.V. SN - 00380938 AB - Solar coronal holes (CHs) are large regions of the corona magnetically open to interplanetary space. The nearly rigid north – south CH boundaries (CHBs) of equatorward extensions of polar CHs are maintained while the underlying photospheric fields rotate differentially, so interchange magnetic reconnection is presumed to be occurring continually at the CHBs. The time and size scales of the required reconnection events at CHBs have not been established from previous observations with soft X-ray images. We use TRACE 195 Å observations on 9 December 2000 of a long-lived equatorial extension of the negative-polarity north polar CH to look for changes of ≳ 5 arcsec to > 20 arcsec at the western CHB. Brightenings and dimmings are observed on both short (≈ 5 minutes) and long (≈ 7 hours) time scales, but the CHB maintains its quasi-rigid location. The transient CHB changes do not appear associated with either magnetic field enhancements or the changes in those field enhancements observed in magnetograms from the Michelson Doppler Imager (MDI) on SOHO. In seven hours of TRACE observations we find no examples of the energetic jets similar to those observed to occur in magnetic reconnection in polar plumes. The lack of dramatic changes in the diffuse CHB implies that gradual magnetic reconnection occurs high in the corona with large (≳ 10°) loops and/or weak coronal fields. We compare our results with recent observations of active regions at CHBs. We also discuss how the magnetic polarity symmetry surrounding quasi-rigid CHs implies an asymmetry in the interchange reconnection process and a possible asymmetry in the solar wind composition from the eastern and western CHB source regions. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORONAL holes (Astronomy) KW - SOLAR corona KW - SOLAR activity KW - STELLAR winds KW - SOLAR wind KW - Coronal holes KW - Magnetic fields N1 - Accession Number: 48156695; Kahler, S. 1; Email Address: AFRL.RVB.PA@hanscom.af.mil Jibben, P. 2 DeLuca, E. E. 2; Affiliation: 1: Air Force Research Laboratory/RVBXS, 29 Randolph Road, Hanscom AFB, MA 01731, USA. 2: Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA.; Source Info: Mar2010, Vol. 262 Issue 1, p135; Subject Term: CORONAL holes (Astronomy); Subject Term: SOLAR corona; Subject Term: SOLAR activity; Subject Term: STELLAR winds; Subject Term: SOLAR wind; Author-Supplied Keyword: Coronal holes; Author-Supplied Keyword: Magnetic fields; Number of Pages: 13p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1007/s11207-010-9517-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48156695&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ner, Yogesh AU - Invernale, Michael A. AU - Grote, James G AU - Stuart, Jeffrey A. AU - Sotzing, Gregory A. T1 - Facile chemical synthesis of DNA-doped PEDOT JO - Synthetic Metals JF - Synthetic Metals Y1 - 2010/03// VL - 160 IS - 5/6 M3 - Article SP - 351 EP - 353 SN - 03796779 AB - Abstract: Herein we report the template polymerization of poly(3,4-ethylenedioxythiophene) (PEDOT) using a biomacromolecule, DNA, as the polyelectrolyte. The resultant bio-composite material formed a stable, aqueous-dispersible system. Higher conductivities than that of conventionally prepared PEDOT-PSS without conductivity enhancing additives were observed (ca. 1.0S/cm versus ca. 0.15S/cm). The material was redox active in the dispersed state and in the solid state. The DNA double helix was found to undergo changes in conformation upon redox switching, resulting in controllable variance of its ability to polarize light. This non-acidic template is non-corrosive and is therefore an ideal candidate for use in device applications. The system described is potentially bioactive and biocompatible, as well, which would further extend its applicability. [Copyright &y& Elsevier] AB - Copyright of Synthetic Metals is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANIC synthesis (Chemistry) KW - CHEMICAL templates KW - POLYMERIZATION KW - DNA KW - POLYTHIOPHENES KW - BIOMACROMOLECULES KW - POLYELECTROLYTES KW - BIOMEDICAL materials KW - CHEMICAL systems KW - Conducting polymers KW - PEDOT KW - Template polymerization KW - Water-dispersible N1 - Accession Number: 48403075; Ner, Yogesh 1 Invernale, Michael A. 2 Grote, James G 3 Stuart, Jeffrey A. 2,4 Sotzing, Gregory A. 1,2; Email Address: sotzing@mail.ims.uconn.edu; Affiliation: 1: The Polymer Program, University of Connecticut, 97 North Eagleville Road, Storrs, CT 06269-3136, USA 2: Department of Chemistry, University of Connecticut, 97 North Eagleville Road, Storrs, CT 06269-3136, USA 3: U.S. Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXPS Wright-Patterson Air Force Base, Ohio, 45433-7707, USA 4: Center for Nanobionics, University of Connecticut, 97 North Eagleville Road, Storrs, CT 06269-3136, USA; Source Info: Mar2010, Vol. 160 Issue 5/6, p351; Subject Term: ORGANIC synthesis (Chemistry); Subject Term: CHEMICAL templates; Subject Term: POLYMERIZATION; Subject Term: DNA; Subject Term: POLYTHIOPHENES; Subject Term: BIOMACROMOLECULES; Subject Term: POLYELECTROLYTES; Subject Term: BIOMEDICAL materials; Subject Term: CHEMICAL systems; Author-Supplied Keyword: Conducting polymers; Author-Supplied Keyword: PEDOT; Author-Supplied Keyword: Template polymerization; Author-Supplied Keyword: Water-dispersible; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.synthmet.2009.11.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48403075&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tom, Brian A. AU - Mills, Andrew A. AU - Wiczer, Michael B. AU - Crabtree, Kyle N. AU - McCall, Benjamin J. T1 - Communications: Development and characterization of a source of rotationally cold, enriched para-H3+. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2010/02/28/ VL - 132 IS - 8 M3 - Article SP - 081103 PB - American Institute of Physics SN - 00219606 AB - In an effort to develop a source of H3+ that is almost entirely in a single quantum state (J=K=1), we have successfully generated a plasma that is enriched to ∼83% in para-H3+ at a rotational temperature of 80 K. This enrichment is a result of the nuclear spin selection rules at work in hydrogenic plasmas, which dictate that only para-H3+ will form from para-H2, and that para-H3+ can be converted to ortho-H3+ by subsequent reaction with H2. This is the first experimental study in which the H2 and H3+ nuclear spin selection rules have been observed at cold temperatures. The ions were produced from a pulsed solenoid valve source, cooled by supersonic expansion, and interrogated via continuous-wave cavity ringdown spectroscopy. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMMUNICATION KW - PLASMA (Ionized gases) KW - NUCLEAR magnetic resonance KW - IONS KW - SOLENOIDS KW - SPECTRUM analysis KW - QUALITATIVE research KW - RESEARCH -- Methodology N1 - Accession Number: 48352318; Tom, Brian A. 1; Email Address: brian.tom@usafa.edu Mills, Andrew A. 1,2 Wiczer, Michael B. 1,3 Crabtree, Kyle N. 1 McCall, Benjamin J. 1,4; Email Address: bjmccall@illinois.edu; Affiliation: 1: Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA 2: Department of Astronomy, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA 3: Department of Chemistry, United States Air Force Academy, CO 80840 4: Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139; Source Info: Feb2010, Vol. 132 Issue 8, p081103; Subject Term: COMMUNICATION; Subject Term: PLASMA (Ionized gases); Subject Term: NUCLEAR magnetic resonance; Subject Term: IONS; Subject Term: SOLENOIDS; Subject Term: SPECTRUM analysis; Subject Term: QUALITATIVE research; Subject Term: RESEARCH -- Methodology; Number of Pages: 4p; Illustrations: 2 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.3322827 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48352318&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Blodgett, Mark AU - Steffes, Gary AU - Lindgren, Eric A. T1 - ANALYTICAL MODEL FOR THE SCATTERING OF AN OBLIQUELY INCIDENT PLANE SHEAR WAVE FROM A CYLINDRICAL CAVITY. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2010/02/22/ VL - 1211 IS - 1 M3 - Article SP - 81 EP - 87 PB - American Institute of Physics SN - 0094243X AB - A 3D analytical model was derived for the propagation and scattering of an obliquely incident plane shear wave from a cylindrical cavity. The generation and decay of the spiral creeping waves was found to be present for typical angled-beam shear wave inspections of fastener sites although dependent on the angle of incidence and polarization. An extension of the model using an image method was derived to study a special case of plane wave scattering by a truncated cylinder with an infinite crack. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCATTERING (Physics) KW - SHEAR waves KW - POLARIZATION (Nuclear physics) KW - PHYSICS experiments KW - OBLIQUE projection KW - Cylindrical Void KW - Fastener Site KW - Spiral Creeping Wave KW - Ultrasonic NDE N1 - Accession Number: 48429341; Aldrin, John C. 1 Blodgett, Mark 2 Steffes, Gary 2 Lindgren, Eric A. 2; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA. 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA.; Source Info: 2/22/2010, Vol. 1211 Issue 1, p81; Subject Term: SCATTERING (Physics); Subject Term: SHEAR waves; Subject Term: POLARIZATION (Nuclear physics); Subject Term: PHYSICS experiments; Subject Term: OBLIQUE projection; Author-Supplied Keyword: Cylindrical Void; Author-Supplied Keyword: Fastener Site; Author-Supplied Keyword: Spiral Creeping Wave; Author-Supplied Keyword: Ultrasonic NDE; Number of Pages: 7p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.3362493 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48429341&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ko, Ray T. AU - Gibson, Thao AU - Fielding, Jennifer T1 - EDDY CURRENT TESTING AND FOUR-POINT PROBE MEASUREMENT OF NANO- AND MACROMATERIALS ENHANCED POLYMERIC COMPOSITES. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2010/02/22/ VL - 1211 IS - 1 M3 - Article SP - 409 EP - 416 PB - American Institute of Physics SN - 0094243X AB - Nano- and macromaterials are being engineered into polymeric composites to enhance the electrical conductivity for lightning strike protection purposes. Electrical conductivity can be measured using a four-point probe method. Eddy current methods can provide a more localized measure of conductivity on the surface of a component. In this study, engineered composites containing both macro- and nanomaterials have been fabricated. Eddy current measurements were made on these specimens to quantify the sensitivity of this method to the relevant variables. Eddy current results in the sub-MHz frequency range agreed well with the electrical conductivity data from four-point probe measurements. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY current testing KW - POLYMERIC composites KW - NANOPARTICLES KW - ELECTRIC conductivity KW - LIGHTNING KW - Composites KW - Eddy Current KW - Four-Point Probe KW - Lightning Strike Protection N1 - Accession Number: 48429397; Ko, Ray T. 1 Gibson, Thao 1 Fielding, Jennifer 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469. 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433.; Source Info: 2/22/2010, Vol. 1211 Issue 1, p409; Subject Term: EDDY current testing; Subject Term: POLYMERIC composites; Subject Term: NANOPARTICLES; Subject Term: ELECTRIC conductivity; Subject Term: LIGHTNING; Author-Supplied Keyword: Composites; Author-Supplied Keyword: Eddy Current; Author-Supplied Keyword: Four-Point Probe; Author-Supplied Keyword: Lightning Strike Protection; Number of Pages: 8p; Illustrations: 4 Diagrams, 1 Chart, 6 Graphs; Document Type: Article L3 - 10.1063/1.3362423 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48429397&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sabbagh, Harold A. AU - Knopp, Jeremy S. AU - Aldrin, John C. AU - Murphy, R. Kim AU - Sabbagh, Elias H. AU - Nyenhuis, John T1 - EDDY CURRENT INVERSION AND ESTIMATION METRICS FOR EVALUATING THERMAL BARRIER COATINGS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2010/02/22/ VL - 1211 IS - 1 M3 - Article SP - 703 EP - 710 PB - American Institute of Physics SN - 0094243X AB - In this paper, sophisticated eddy-current techniques incorporating model-based inverse methods were successfully demonstrated to measure the thickness and remaining-life of high-temperature coatings. To further assure the performance of these inverse methods, several estimation metrics including Fisher Information, Cramer-Rao Lower Bound (CRLB), covariance, and singular value decomposition (SVD) are introduced. The connections and utility of these metrics are illustrated in the design of eddy current methods for estimating layer thickness, conductivity and probe liftoff. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY current testing KW - SINGULAR value decomposition KW - SURFACE coatings KW - INVERSION (Geophysics) KW - ELECTRIC conductivity KW - Advanced Gas Turbines KW - Eddy-Current Nondestructive Evaluation KW - Electromagnetic Inverse Problems KW - Thermal Barrier Coatings KW - Thin-Film Metrology N1 - Accession Number: 48429357; Sabbagh, Harold A. 1 Knopp, Jeremy S. 2 Aldrin, John C. 3 Murphy, R. Kim 1 Sabbagh, Elias H. 1 Nyenhuis, John 4; Affiliation: 1: Victor Technologies LLC, Bloomington, IN 47401, USA. 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA. 3: Computational Tools, Gurnee, IL 60031, USA. 4: Dept. of Electric Computer Engineering, Purdue University, West Lafayette, IN, USA.; Source Info: 2/22/2010, Vol. 1211 Issue 1, p703; Subject Term: EDDY current testing; Subject Term: SINGULAR value decomposition; Subject Term: SURFACE coatings; Subject Term: INVERSION (Geophysics); Subject Term: ELECTRIC conductivity; Author-Supplied Keyword: Advanced Gas Turbines; Author-Supplied Keyword: Eddy-Current Nondestructive Evaluation; Author-Supplied Keyword: Electromagnetic Inverse Problems; Author-Supplied Keyword: Thermal Barrier Coatings; Author-Supplied Keyword: Thin-Film Metrology; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 8p; Illustrations: 3 Diagrams, 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.3362463 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48429357&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Sabbagh, Harold A. AU - Murphy, R. Kim AU - Sabbagh, Elias H. AU - Knopp, Jeremy S. T1 - SENSITIVITY ANALYSIS OF INVERSE METHODS IN EDDY CURRENT PIT CHARACTERIZATION. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2010/02/22/ VL - 1211 IS - 1 M3 - Article SP - 711 EP - 718 PB - American Institute of Physics SN - 0094243X AB - A sensitivity analysis was performed for a pit characterization problem to quantify the impact of potential sources for variation on the performance of inverse methods. Certain data processing steps, including careful feature extraction, background clutter removal and compensation for variation in the scan step size through the tubing, were found to be critical to achieve good estimates of the pit depth and diameter. Variance studied in model probe dimensions did not adversely affect performance. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SENSITIVITY analysis KW - EDDY current testing KW - INVERSION (Geophysics) KW - FEATURE extraction (Data processing) KW - SCANNING systems KW - Eddy Current KW - Inverse Methods KW - Models KW - Pitting Corrosion KW - Sensitivity Analysis N1 - Accession Number: 48429356; Aldrin, John C. 1 Sabbagh, Harold A. 2 Murphy, R. Kim 2 Sabbagh, Elias H. 2 Knopp, Jeremy S. 3; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA. 2: Victor Technologies LLC, Bloomington, IN 47401, USA. 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA.; Source Info: 2/22/2010, Vol. 1211 Issue 1, p711; Subject Term: SENSITIVITY analysis; Subject Term: EDDY current testing; Subject Term: INVERSION (Geophysics); Subject Term: FEATURE extraction (Data processing); Subject Term: SCANNING systems; Author-Supplied Keyword: Eddy Current; Author-Supplied Keyword: Inverse Methods; Author-Supplied Keyword: Models; Author-Supplied Keyword: Pitting Corrosion; Author-Supplied Keyword: Sensitivity Analysis; Number of Pages: 8p; Illustrations: 2 Diagrams, 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.3362464 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48429356&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abu-Nabah, B. A. AU - Hassan, W. T. AU - Blodgett, M. P. AU - Nagy, P. B. T1 - LIMITATIONS OF EDDY CURRENT RESIDUAL STRESS PROFILING IN SURFACE-TREATED ENGINE ALLOYS OF VARIOUS HARDNESS LEVELS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2010/02/22/ VL - 1211 IS - 1 M3 - Article SP - 1357 EP - 1364 PB - American Institute of Physics SN - 0094243X AB - Recent research results indicated that eddy current conductivity measurements might be exploited for nondestructive evaluation of subsurface residual stresses in surface-treated nickel-base superalloy components. This paper presents new results that indicate that in some popular nickel-base superalloys the relationship between the electric conductivity profile and the sought residual stress profile is more tenuous than previously thought. It is shown that in IN718 the relationship is very sensitive to the state of precipitation hardening and, if left uncorrected, could render the eddy current technique unsuitable for residual stress profiling in components of 36 HRC or harder, i.e., in most critical engine applications. The presented experimental results show that the observed dramatic change in the eddy current response of hardened IN718 to surface treatment is caused by very fine nanometer-scale features of the microstructure, such as γ’ and γ” precipitates, rather than micrometer-scale features, such as changing grain size or carbide precipitates. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - ELECTRIC conductivity KW - RESIDUAL stresses KW - STRENGTH of materials KW - MICROMECHANICS KW - Conductivity Spectroscopy KW - Eddy Current KW - Residual Stress N1 - Accession Number: 48429535; Abu-Nabah, B. A. 1 Hassan, W. T. 2 Blodgett, M. P. 3 Nagy, P. B. 4; Affiliation: 1: General Electric Aviation, Cincinnati, OH 45221. 2: Rolls-Royce Corporation, Indianapolis, IN 46241. 3: Air Force Research Laboratory, WPAFB, Dayton, OH 45433. 4: University of Cincinnati, Cincinnati, OH 45221.; Source Info: 2/22/2010, Vol. 1211 Issue 1, p1357; Subject Term: EDDY currents (Electric); Subject Term: ELECTRIC conductivity; Subject Term: RESIDUAL stresses; Subject Term: STRENGTH of materials; Subject Term: MICROMECHANICS; Author-Supplied Keyword: Conductivity Spectroscopy; Author-Supplied Keyword: Eddy Current; Author-Supplied Keyword: Residual Stress; Number of Pages: 8p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.3362225 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48429535&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heebl, J. AU - Lindgren, E. AU - Melson, R. T1 - PROGRESS IN DEVELOPMENT OF A TRANSFER FUNCTION FOR ANGLE BEAM ULTRASONIC INSPECTIONS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2010/02/22/ VL - 1211 IS - 1 M3 - Article SP - 1887 EP - 1894 PB - American Institute of Physics SN - 0094243X AB - A significant concern for the US Air Force (USAF) is the aging of its aircraft fleet and, subsequently, the resultant increase in the number of inspections required to ensure the flight-readiness and safety of these aircraft. In particular, the inspection of bolt holes at locations of high stress is a recurring requirement. Frequently, when not removing fasteners, a 45 degree angle beam shear wave ultrasonic (UT) inspection is used to detect fatigue cracks at these sites. The implementation of new inspections usually requires a capability demonstration. This is typically performed using representative damage in representative structures. It is very common to use electric discharge machined (EDM) notches to represent fatigue cracks in capability studies to decrease the time and cost of such studies. A limitation of this approach is that sensitivity will vary as a function of damage type. Therefore, a mathematical relationship needs to be developed that establishes the relationship between the responses from EDM notches and grown fatigue cracks. This will enable EDM notched samples to be used to validate new inspections. An immersion ultrasonic tank was used to perform inspections on both EDM notched samples and multiple fatigue cracked coupons using the 45 degree angle beam ultrasonic technique. Both sample sets had a range of flaw dimensions. The empirical data was analyzed to develop a mathematical transfer function that correlates the amplitude response from the EDM notches with those from grown fatigue cracks. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSFER functions (Mathematics) KW - CONTROL theory (Mathematics) KW - AUTOMATIC control KW - ULTRASONICS KW - ELECTRIC discharges KW - Angle Beam Inspection KW - EDM Notch KW - Fatigue Cracks KW - Transfer Function KW - Ultrasonic N1 - Accession Number: 48429461; Heebl, J. 1 Lindgren, E. 1 Melson, R. 1; Affiliation: 1: Air Force Research Laboratory, Nondestructive Evaluation Branch, Wright Patterson Air Force Base, Dayton, OH 45433.; Source Info: 2/22/2010, Vol. 1211 Issue 1, p1887; Subject Term: TRANSFER functions (Mathematics); Subject Term: CONTROL theory (Mathematics); Subject Term: AUTOMATIC control; Subject Term: ULTRASONICS; Subject Term: ELECTRIC discharges; Author-Supplied Keyword: Angle Beam Inspection; Author-Supplied Keyword: EDM Notch; Author-Supplied Keyword: Fatigue Cracks; Author-Supplied Keyword: Transfer Function; Author-Supplied Keyword: Ultrasonic; Number of Pages: 8p; Illustrations: 1 Color Photograph, 3 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.3362327 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48429461&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Medina, Enrique A. AU - Lindgren, Eric A. AU - Buynak, Charles AU - Steffes, Gary AU - Derriso, Mark T1 - MODEL-ASSISTED PROBABILISTIC RELIABILITY ASSESSMENT FOR STRUCTURAL HEALTH MONITORING SYSTEMS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2010/02/22/ VL - 1211 IS - 1 M3 - Article SP - 1965 EP - 1972 PB - American Institute of Physics SN - 0094243X AB - This paper describes a model-assisted probabilistic methodology to ensure the reliability of SHM systems for damage detection, localization, and sizing. A hierarchical approach is presented that attempts to minimize the number of samples, the length of time, and degree of full-scale testing required for statistically meaningful characterization results. The feasibility of applying this approach to typical sensing methods found in SHM systems is investigated, and additional challenges concerning model reliability and uncertainty propagation are addressed. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FEASIBILITY studies KW - METHODOLOGY KW - NUMERICAL analysis KW - DEMODULATION (Electronics) KW - LOCALIZATION theory KW - Model-Assisted POD Evaluation KW - Probability of Detection (POD) KW - Reliability KW - Structural Health Monitoring N1 - Accession Number: 48429450; Aldrin, John C. 1 Medina, Enrique A. 2 Lindgren, Eric A. 3 Buynak, Charles 3 Steffes, Gary 3 Derriso, Mark 3; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA. 2: Radiance Technologies, Inc., Wright-Patterson AFB, Ohio Dayton, OH 45430, USA. 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA.; Source Info: 2/22/2010, Vol. 1211 Issue 1, p1965; Subject Term: FEASIBILITY studies; Subject Term: METHODOLOGY; Subject Term: NUMERICAL analysis; Subject Term: DEMODULATION (Electronics); Subject Term: LOCALIZATION theory; Author-Supplied Keyword: Model-Assisted POD Evaluation; Author-Supplied Keyword: Probability of Detection (POD); Author-Supplied Keyword: Reliability; Author-Supplied Keyword: Structural Health Monitoring; Number of Pages: 8p; Illustrations: 2 Diagrams; Document Type: Article L3 - 10.1063/1.3362348 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48429450&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li Chen AU - Hongjun Yang AU - Zexuan Qiang AU - Huiqing Pang AU - Lei Sun AU - Zhenqiang Ma AU - Pate, Ryan AU - Stiff-Roberts, Adrienne AU - Shuai Gao AU - Jian Xu AU - Brown, Gail J. AU - Weidong Zhou T1 - Colloidal quantum dot absorption enhancement in flexible Fano filters. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/02/22/ VL - 96 IS - 8 M3 - Article SP - 083111 PB - American Institute of Physics SN - 00036951 AB - We report here modified absorption property of colloidal quantum dots (CQDs) inside flexible Fano filters—made of patterned single crystalline silicon nanomembrane transferred onto flexible plastic substrates. Enhanced optical absorption was obtained both experimentally and theoretically, when the CQD absorption peak spectrally overlaps with Fano resonance peak. On the other hand, suppressed absorption was observed when the Fano resonance has no spectral overlap with the CQD absorption bands. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM dots KW - ABSORPTION KW - SILICON KW - RESONANCE KW - SEMICONDUCTORS KW - NANOPARTICLES KW - SPECTRUM analysis KW - PHYSICS N1 - Accession Number: 48352103; Li Chen 1 Hongjun Yang 1 Zexuan Qiang 1 Huiqing Pang 2 Lei Sun 2 Zhenqiang Ma 2 Pate, Ryan 3 Stiff-Roberts, Adrienne 3 Shuai Gao 4 Jian Xu 4 Brown, Gail J. 5 Weidong Zhou 1; Email Address: wzhou@uta.edu; Affiliation: 1: Department of Electrical Engineering, NanoFAB Center, University of Texas at Arlington, Texas 76019, USA 2: Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Wisconsin 53706, USA 3: Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708, USA 4: Department of Engineering Science and Mechanics, Pennsylvania State University, University Park, Pennsylvania 16802, USA 5: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, Ohio 45433-7707, USA; Source Info: Feb2010, Vol. 96 Issue 8, p083111; Subject Term: QUANTUM dots; Subject Term: ABSORPTION; Subject Term: SILICON; Subject Term: RESONANCE; Subject Term: SEMICONDUCTORS; Subject Term: NANOPARTICLES; Subject Term: SPECTRUM analysis; Subject Term: PHYSICS; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.3337095 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48352103&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alexander, Michael N. T1 - Under Microscope and Macroscope. JO - Science JF - Science Y1 - 2010/02/19/ VL - 327 IS - 5968 M3 - Book Review SP - 960 EP - 961 SN - 00368075 AB - The article reviews the book "The Nature of Technology: What It Is and How It Evolves," by W. Brian Arthur. KW - TECHNOLOGY KW - NONFICTION KW - ARTHUR, W. Brian KW - NATURE of Technology: What It Is & How It Evolves, The (Book) N1 - Accession Number: 48570154; Alexander, Michael N. 1; Email Address: mina41@ieee.org; Affiliation: 1: Electromagnetics Technology Division, Sensors Directorate, Air Force Research Laboratory, 80 Scott Drive, Hanscom Air Force Base, MA 01731-2909, USA; Source Info: 2/19/2010, Vol. 327 Issue 5968, p960; Subject Term: TECHNOLOGY; Subject Term: NONFICTION; Reviews & Products: NATURE of Technology: What It Is & How It Evolves, The (Book); People: ARTHUR, W. Brian; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48570154&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vlahos, Vasilios AU - Morgan, Dane AU - LaCour, Matthew AU - Golby, Ken AU - Shiffler, Don AU - Booske, John H. T1 - Surface chemical analysis and ab initio investigations of CsI coated C fiber cathodes for high power microwave sources. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/02/15/ VL - 107 IS - 4 M3 - Article SP - 044903 EP - 044903 PB - American Institute of Physics SN - 00218979 AB - CsI coated C fiber cathodes are promising electron emitters utilized in field emission applications. Ab initio calculations, in conjunction with experimental investigations on CsI-spray coated C fiber cathodes, were performed in order to better understand the origin of the low turn-on E-field obtained, as compared to uncoated C fibers. One possible mechanism for lowering the turn-on E-field is surface dipole layers reducing the work function. Ab initio modeling revealed that surface monolayers of Cs, CsI, Cs2O, and CsO are all capable of producing low work function C fiber cathodes (1 eV<[uppercase_phi_synonym]<1.5 eV), yielding a reduction in the turn-on E-field by as much as ten times, when compared to the bare fiber. Although a CsI-containing aqueous solution is spray deposited on the C fiber surface, energy dispersive x-ray spectroscopy and scanning auger microscopy measurements show coabsorption of Cs and I into the fiber interior and Cs and O on the fiber surface, with no surface I. It is therefore proposed that a cesium oxide (CsxOy) surface coating is responsible, at least in part, for the low turn E-field and superior emission characteristics of this type of fiber cathode. This CsxOy layer could be formed during preconditioning heating. CsxOy surface layers cannot only lower the fiber work function by the formation of surface dipoles (if they are thin enough) but may also enhance surface emission through their ability to emit secondary electrons due to a process of grazing electron impact. These multiple electron emission processes may explain the reported 10–100 fold reduction in the turn-on E-field of coated C fibers. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIELD emission cathodes KW - ELECTRON emission KW - SURFACES (Technology) -- Analysis KW - CESIUM iodide KW - MICROWAVE devices N1 - Accession Number: 48352384; Vlahos, Vasilios 1 Morgan, Dane 2 LaCour, Matthew 3 Golby, Ken 3 Shiffler, Don 4 Booske, John H. 5; Affiliation: 1: Interdisciplinary Materials Science Program, University of Wisconsin–Madison, Madison, Wisconsin 53706, 2: Interdisciplinary Materials Science Program and Department of Materials Science and Engineering, University of Wisconsin–Madison, Madison, Wisconsin 53706, 3: SAIC, Inc., Albuquerque, New Mexico 87117, 4: Air Force Research Laboratory, AFRL/DEHP, 3550 Aberdeen SE, Kirtland AFB, New Mexico 87117, 5: Interdisciplinary Materials Science Program and Department of Electrical and Computer Engineering, University of Wisconsin–Madison, Madison, Wisconsin 53706,; Source Info: Feb2010, Vol. 107 Issue 4, p044903; Subject Term: FIELD emission cathodes; Subject Term: ELECTRON emission; Subject Term: SURFACES (Technology) -- Analysis; Subject Term: CESIUM iodide; Subject Term: MICROWAVE devices; Number of Pages: 1p; Illustrations: 3 Diagrams, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.3304923 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48352384&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gao, Pengzhao AU - Rebrov, Evgeny V. AU - Verhoeven, Tiny M. W. G. M. AU - Schouten, Jaap C. AU - Kleismit, Richard AU - Kozlowski, Gregory AU - Cetnar, John AU - Turgut, Zafer AU - Subramanyam, Guru T1 - Structural investigations and magnetic properties of sol-gel Ni0.5Zn0.5Fe2O4 thin films for microwave heating. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/02/15/ VL - 107 IS - 4 M3 - Article SP - 044317-1 EP - 044317-8 PB - American Institute of Physics SN - 00218979 AB - Nanocrystalline Ni0.5Zn0.5Fe2O4 thin films have been synthesized with various grain sizes by a sol-gel method on polycrystalline silicon substrates. The morphology, magnetic, and microwave absorption properties of the films calcined in the 673–1073 K range were studied with x-ray diffraction, scanning electron microscopy, x-ray photoelectron spectroscopy, atomic force microscopy, vibrating sample magnetometry, and evanescent microwave microscopy. All films were uniform without microcracks. Increasing the calcination temperature from 873 to 1073 K and time from 1 to 3 h resulted in an increase of the grain size from 12 to 27 nm. The saturation and remnant magnetization increased with increasing the grain size, while the coercivity demonstrated a maximum near a critical grain size of 21 nm due to the transition from monodomain to multidomain behavior. The complex permittivity of the Ni–Zn ferrite films was measured in the frequency range of 2–15 GHz. The heating behavior was studied in a multimode microwave cavity at 2.4 GHz. The highest microwave heating rate in the temperature range of 315–355 K was observed in the film close to the critical grain size. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films -- Research KW - NANOCRYSTALS KW - RESEARCH KW - NICKEL compounds KW - MICROWAVE heating KW - X-ray diffraction KW - PERMITTIVITY N1 - Accession Number: 48352356; Gao, Pengzhao 1 Rebrov, Evgeny V. 1 Verhoeven, Tiny M. W. G. M. 1 Schouten, Jaap C. 1 Kleismit, Richard 2 Kozlowski, Gregory 2 Cetnar, John 2 Turgut, Zafer 3 Subramanyam, Guru 4; Affiliation: 1: Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, 2: Department of Physics, Wright State University, Dayton, Ohio 45435, 3: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, 4: Department of Electrical and Computer Engineering, University of Dayton, Dayton, Ohio 45469,; Source Info: Feb2010, Vol. 107 Issue 4, p044317-1; Subject Term: THIN films -- Research; Subject Term: NANOCRYSTALS; Subject Term: RESEARCH; Subject Term: NICKEL compounds; Subject Term: MICROWAVE heating; Subject Term: X-ray diffraction; Subject Term: PERMITTIVITY; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 8p; Illustrations: 1 Diagram, 2 Charts, 10 Graphs; Document Type: Article L3 - 10.1063/1.3309767 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48352356&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liu, X.J. AU - Meng, J. AU - Pan, E. AU - Albrecht, J.D. T1 - Effects of electron correlation and spin–orbit coupling on the electronic and magnetic properties of TbCu3Mn4O12 JO - Journal of Magnetism & Magnetic Materials JF - Journal of Magnetism & Magnetic Materials Y1 - 2010/02/15/ VL - 322 IS - 4 M3 - Article SP - 443 EP - 447 SN - 03048853 AB - Abstract: Electronic and magnetic properties of the three magnetic-sublattice double perovskite TbCu3Mn4O12 (TCMO) are investigated by performing first-principles density-functional theory calculations. Our electronic structure calculations show that TCMO is half-metallic and its half-metallicity can only be correctly described when the electron correlation on Tb3+ 4f 8 electrons are considered. The energies of different magnetic configurations among the three magnetic sublattices are also calculated, revealing that the magnetic configuration with Mn and Cu spins in the antiparallel arrangement and with the Tb magnetic moments ferromagnetically/antiferromagnetically (FM/AFM) coupled to Cu/Mn spins (that is Tb↓Cu3↓Mn4↑O12) is the lowest energetic magnetic state, which is consistent with recent experimental results. The magnetic anisotropy is further calculated for the [111], [110], and [001] spin quantization directions. It is found that the [111]-direction is more stable than the [110]- and [001]-directions by 123 and 135meV per formula unit, respectively, indicating a significant magnetic anisotropy. Our detailed projected partial density of states analysis finally shows that Cu and Mn are antiferromagnetically coupled by superexchange interaction and Tb is expected to interact FM with A-site Cu and AFM with B-site Mn sublattices by way of 4f–2p–3d. [Copyright &y& Elsevier] AB - Copyright of Journal of Magnetism & Magnetic Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON configuration KW - MAGNETIC properties KW - MAGNETORESISTANCE KW - PEROVSKITE KW - DENSITY functionals KW - ANTIFERROMAGNETISM KW - ANISOTROPY KW - MAGNETICS KW - Electronic correlation and spin-orbit coupling effect KW - Electronic correlation effect KW - Spin-orbit coupling effect KW - Three magnetic-sublattice perovskite N1 - Accession Number: 45351329; Liu, X.J. 1,2 Meng, J. 1; Email Address: jmeng@ciac.jl.cn Pan, E. 2; Email Address: pan2@uakron.edu Albrecht, J.D. 3; Affiliation: 1: State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, PR China 130022 2: Computer Modeling and Simulation Group, College of Engineering, University of Akron, Ohio 44325-3905, USA 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: Feb2010, Vol. 322 Issue 4, p443; Subject Term: ELECTRON configuration; Subject Term: MAGNETIC properties; Subject Term: MAGNETORESISTANCE; Subject Term: PEROVSKITE; Subject Term: DENSITY functionals; Subject Term: ANTIFERROMAGNETISM; Subject Term: ANISOTROPY; Subject Term: MAGNETICS; Author-Supplied Keyword: Electronic correlation and spin-orbit coupling effect; Author-Supplied Keyword: Electronic correlation effect; Author-Supplied Keyword: Spin-orbit coupling effect; Author-Supplied Keyword: Three magnetic-sublattice perovskite; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jmmm.2009.09.073 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45351329&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Crouse, C.A. AU - Shin, E. AU - Murray, P.T. AU - Spowart, J.E. T1 - Solution assisted laser ablation synthesis of discrete aluminum nanoparticles JO - Materials Letters JF - Materials Letters Y1 - 2010/02/15/ VL - 64 IS - 3 M3 - Article SP - 271 EP - 274 SN - 0167577X AB - Abstract: Discrete aluminum nanoparticles with an average particle size of 21nm have been prepared by laser ablation of a metallic aluminum target submerged in dry tetrahydrofuran in the presence of 0.001M oleic acid as a stabilizing ligand. The particles display high solubility and minimal aggregation while the absence of oleic acid leads to highly aggregated particles and a broader particle size distribution. O/Al ratios obtained from EDS analysis suggest that the particles produced are primarily metallic aluminum with minimal oxide content. [Copyright &y& Elsevier] AB - Copyright of Materials Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLUTION (Chemistry) KW - LASER ablation KW - INORGANIC compounds -- Synthesis KW - ALUMINUM compounds KW - TETRAHYDROFURAN KW - NANOPARTICLES KW - OLEIC acid KW - LIGANDS KW - CLUSTERING of particles KW - Laser processing KW - Metals and alloys KW - Nanomaterials N1 - Accession Number: 47055336; Crouse, C.A. 1; Email Address: christopher.crouse@wpafb.af.mil Shin, E. 2 Murray, P.T. 2 Spowart, J.E. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA 2: Research Institute, University of Dayton, Dayton, OH 45469-0172, USA; Source Info: Feb2010, Vol. 64 Issue 3, p271; Subject Term: SOLUTION (Chemistry); Subject Term: LASER ablation; Subject Term: INORGANIC compounds -- Synthesis; Subject Term: ALUMINUM compounds; Subject Term: TETRAHYDROFURAN; Subject Term: NANOPARTICLES; Subject Term: OLEIC acid; Subject Term: LIGANDS; Subject Term: CLUSTERING of particles; Author-Supplied Keyword: Laser processing; Author-Supplied Keyword: Metals and alloys; Author-Supplied Keyword: Nanomaterials; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.matlet.2009.10.060 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47055336&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wilks, G.B. AU - Tschopp, M.A. AU - Spowart, J.E. T1 - Multi-scale characterization of inhomogeneous morphologically textured microstructures JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2010/02/15/ VL - 527 IS - 4/5 M3 - Article SP - 883 EP - 889 SN - 09215093 AB - Abstract: A computationally efficient microstructure characterization technique is presented that separately identifies morphological texture and any orientation dependence of second-phase clustering via a concise visual representation. This technique, the Vector Multi-Scale Analysis of Area Fractions (VMSAAF), is then applied to computer-generated microstructures to understand the effects of second-phase area fraction, aspect ratio, alignment propensity, variant orientation, and degree of microstructure banding on the homogenous length scale—a metric used to quantify clustering—as well as the extent of representative volume elements for a microstructure. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Texture KW - MICROSTRUCTURE KW - PHASE rule & equilibrium KW - VECTOR analysis KW - ANALYSIS of variance KW - CLUSTERING of particles KW - Characterization KW - Clustering KW - Homogeneity KW - Morphology KW - Multi-Scale KW - Representative volume element N1 - Accession Number: 47058556; Wilks, G.B. 1,2; Email Address: garth.wilks@wpafb.af.mil Tschopp, M.A. 1,3 Spowart, J.E. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RXLM), Wright-Patterson Air Force Base, OH 45433, USA 2: General Dynamics Inc., Dayton, OH 45431, USA 3: Universal Technology Corporation, Dayton, OH 45432, USA; Source Info: Feb2010, Vol. 527 Issue 4/5, p883; Subject Term: MATERIALS -- Texture; Subject Term: MICROSTRUCTURE; Subject Term: PHASE rule & equilibrium; Subject Term: VECTOR analysis; Subject Term: ANALYSIS of variance; Subject Term: CLUSTERING of particles; Author-Supplied Keyword: Characterization; Author-Supplied Keyword: Clustering; Author-Supplied Keyword: Homogeneity; Author-Supplied Keyword: Morphology; Author-Supplied Keyword: Multi-Scale; Author-Supplied Keyword: Representative volume element; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.msea.2009.09.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47058556&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ma, H. M. AU - Gao, X.-L. AU - Tolle, T. Benson T1 - Monte Carlo modeling of the fiber curliness effect on percolation of conductive composites. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/02/08/ VL - 96 IS - 6 M3 - Article SP - 061910 PB - American Institute of Physics SN - 00036951 AB - A three-dimensional (3D) Monte Carlo model is developed to study the fiber curliness effect on the percolation threshold of a composite filled with electrically conductive curved fibers. These fibers are simulated as zigzag-shaped fibers that are randomly positioned in the composite, forming a 3D random network. The simulation results show that the fiber curliness can significantly affect the percolation threshold: the more curved the fibers, the higher the threshold. The results also reveal an exponential relationship between the threshold and the fiber aspect ratio: the higher the aspect ratio, the lower the threshold. These predicted trends agree well with existing experimental and simulation results based on straight fibers or curved fibers with simpler shapes. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONTE Carlo method KW - ELECTRIC conductors KW - PERCOLATION KW - FIBERS KW - THRESHOLD limit values (Industrial toxicology) KW - RATIO measurement N1 - Accession Number: 48067907; Ma, H. M. 1 Gao, X.-L. 1; Email Address: xlgao@tamu.edu Tolle, T. Benson 2; Affiliation: 1: Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433, USA; Source Info: 2/8/2010, Vol. 96 Issue 6, p061910; Subject Term: MONTE Carlo method; Subject Term: ELECTRIC conductors; Subject Term: PERCOLATION; Subject Term: FIBERS; Subject Term: THRESHOLD limit values (Industrial toxicology); Subject Term: RATIO measurement; Number of Pages: 3p; Illustrations: 3 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.3309590 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48067907&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Look, D. C. AU - Leedy, K. D. AU - Tomich, D. H. AU - Bayraktaroglu, B. T1 - Mobility analysis of highly conducting thin films: Application to ZnO. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/02/08/ VL - 96 IS - 6 M3 - Article SP - 062102 PB - American Institute of Physics SN - 00036951 AB - Hall-effect measurements have been performed on a series of highly conductive thin films of Ga-doped ZnO grown by pulsed laser deposition and annealed in a forming-gas atmosphere (5% H2 in Ar). The mobility as a function of thickness d is analyzed by a simple formula involving only ionized-impurity and boundary scattering and having a single fitting parameter, the acceptor/donor concentration ratio K=NA/ND. For samples with d=3–100 nm, Kavg=0.41, giving ND=4.7×1020 and NA=1.9×1020 cm-3. Thicker samples require a two-layer formulation due to inhomogeneous annealing. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - PULSED laser deposition KW - COAL gas KW - IONIZED air KW - METALS -- Inclusions N1 - Accession Number: 48067955; Look, D. C. 1; Email Address: david.look@wpafb.af.mil Leedy, K. D. 2 Tomich, D. H. 3 Bayraktaroglu, B. 2; Affiliation: 1: Semiconductor Research Center, Wright State University, Dayton, Ohio 45435, USA 2: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: 2/8/2010, Vol. 96 Issue 6, p062102; Subject Term: THIN films; Subject Term: PULSED laser deposition; Subject Term: COAL gas; Subject Term: IONIZED air; Subject Term: METALS -- Inclusions; Number of Pages: 3p; Illustrations: 1 Graph; Document Type: Article L3 - 10.1063/1.3310043 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48067955&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wen, Y.H. AU - Lill, J.V. AU - Chen, S.L. AU - Simmons, J.P. T1 - A ternary phase-field model incorporating commercial CALPHAD software and its application to precipitation in superalloys JO - Acta Materialia JF - Acta Materialia Y1 - 2010/02// VL - 58 IS - 3 M3 - Article SP - 875 EP - 885 SN - 13596454 AB - Abstract: A ternary phase-field model was developed that is linked directly to commercial CALPHAD software to provide quantitative thermodynamic driving forces. A recently available diffusion mobility database for ordered phases is also implemented to give a better description of the diffusion behavior in alloys. Because the targeted application of this model is the study of precipitation in Ni-based superalloys, a Ni–Al–Cr model alloy was constructed. A detailed description of this model is given in the paper. We have considered the misfit effects of the partitioning of the two solute elements. Transformation rules of the dual representation of the microstructure by CALPHAD and by the phase field are established and the link with commercial CALPHAD software is described. Proof-of-concept tests were performed to evaluate the model and the results demonstrate that the model can qualitatively reproduce observed precipitation behavior. Uphill diffusion of Al is observed in a few diffusion couples, showing the significant influence of Cr on the chemical potential of Al. Possible applications of this model are discussed. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT resistant alloys KW - PRECIPITATION (Chemistry) KW - NICKEL-chromium-aluminum alloys KW - THERMODYNAMICS KW - TERNARY phase diagrams KW - DIFFUSION KW - PHASE partition KW - MICROSTRUCTURE KW - Commercial CALPHAD software KW - Ni–Al–Cr alloys KW - Precipitation KW - Ternary phase-field models KW - Uphill diffusion N1 - Accession Number: 47061067; Wen, Y.H. 1,2; Email Address: youhai.wen@wpafb.af.mil Lill, J.V. 3 Chen, S.L. 4 Simmons, J.P. 1; Affiliation: 1: Air Force Research Laboratory, AFRL/RXLM, Wright-Patterson AFB, OH 45433, USA 2: UES, Inc., 4401, Dayton-Xenia Road, Dayton, OH 45432, USA 3: High Performace Technologies, Inc., Wright-Patterson AFB building 676, OH 45433, USA 4: CompuTherm LLC, 437 S. Yellowstone, Dr. Suite 217, Madison, WI 53719, USA; Source Info: Feb2010, Vol. 58 Issue 3, p875; Subject Term: HEAT resistant alloys; Subject Term: PRECIPITATION (Chemistry); Subject Term: NICKEL-chromium-aluminum alloys; Subject Term: THERMODYNAMICS; Subject Term: TERNARY phase diagrams; Subject Term: DIFFUSION; Subject Term: PHASE partition; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: Commercial CALPHAD software; Author-Supplied Keyword: Ni–Al–Cr alloys; Author-Supplied Keyword: Precipitation; Author-Supplied Keyword: Ternary phase-field models; Author-Supplied Keyword: Uphill diffusion; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.actamat.2009.10.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47061067&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, A.K. AU - Farmer, B.L. AU - Sihn, S. AU - Varshney, V. AU - Patnaik, S. AU - Ganguli, S. T1 - Thermal interface tailoring in composite materials JO - Diamond & Related Materials JF - Diamond & Related Materials Y1 - 2010/02// VL - 19 IS - 2/3 M3 - Article SP - 268 EP - 272 SN - 09259635 AB - Abstract: The thermal transport in heterogeneous materials systems, such as in composites, is essentially controlled by the phonon scattering phenomena at the materials interface due to the interface materials property mismatch. Such phenomena are also prevalent in joints or component interfaces. The thermal property mismatch at the materials interface, in the molecular scale, is primarily dictated by the phonon density of state across the interface. In this paper, the interface materials configuration for tailoring the thermal properties of composite materials with nano constituents is presented. The materials modeling using both the finite element analysis (FEM) and molecular dynamics (MD) simulations is performed to identify the effect of materials constituent scale as well as the nano constituent surface functionalization on the interface thermal transport phenomena. It is observed that the effect of surface functionalization towards establishing covalent bonding between the nano constituent surface the matrix (such as polymers) is extremely important in enhancing the interface thermal conductance. [Copyright &y& Elsevier] AB - Copyright of Diamond & Related Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL interface materials KW - COMPOSITE materials KW - INHOMOGENEOUS materials KW - PHONONS -- Scattering KW - JOINTS (Engineering) KW - THERMOPHYSICAL properties KW - MOLECULAR dynamics KW - SIMULATION methods & models KW - Bonded joints KW - Composite materials KW - Multiscale modeling KW - Thermal interface KW - Thermal materials N1 - Accession Number: 47825192; Roy, A.K. 1; Email Address: ajit.roy@wpafb.af.mil Farmer, B.L. 1 Sihn, S. 1,2 Varshney, V. 1,3 Patnaik, S. 1,3 Ganguli, S. 1,2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7750, United States 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0060, United States 3: Universal Technology Corporation, 1270 North Fairfield Road, Dayton, OH 45432, United States; Source Info: Feb2010, Vol. 19 Issue 2/3, p268; Subject Term: THERMAL interface materials; Subject Term: COMPOSITE materials; Subject Term: INHOMOGENEOUS materials; Subject Term: PHONONS -- Scattering; Subject Term: JOINTS (Engineering); Subject Term: THERMOPHYSICAL properties; Subject Term: MOLECULAR dynamics; Subject Term: SIMULATION methods & models; Author-Supplied Keyword: Bonded joints; Author-Supplied Keyword: Composite materials; Author-Supplied Keyword: Multiscale modeling; Author-Supplied Keyword: Thermal interface; Author-Supplied Keyword: Thermal materials; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.diamond.2009.10.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47825192&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McIntire, John P . AU - Havig, Paul R. AU - Watamaniuk, Scott N. J. AU - Gilkey, Robert H. T1 - Visual Search Performance With 3-D Auditory Cues: Effects of Motion, Target Location, and Practice. JO - Human Factors JF - Human Factors Y1 - 2010/02// VL - 52 IS - 1 M3 - Article SP - 41 EP - 53 SN - 00187208 AB - Objectives: We evaluate visual search performance in both static (nonmoving) and dynamic (moving) search environments with and without spatial (3-D) auditory cues to target location. Additionally, the effects of target trajectory, target location, and practice are assessed. Background: Previous research on aurally aided visual search has shown a significant reduction in response times when 3-D auditory cues are displayed, relative to unaided search. However, the vast majority of this research has examined only searches for static targets in static visual environments. The present experiment was conducted to examine the effect of dynamic stimuli upon aurally aided visual search performance. Method: The 8 participants conducted repeated searches for a single visual target hidden among 15 distracting stimuli. The four main conditions of the experiment consisted of the four possible combinations of 3-D auditory cues (present or absent) and search environment (static or dynamic). Results: The auditory cues were comparably effective at reducing search times in dynamic environments (-25%) as in static environments (-22%). Audio cues helped all participants. The cues were most beneficial when the target appeared at large eccentricities and on the horizontal plane. After a brief initial exposure to 3-D audio, no training or practice effects with 3-D audio were found. Conclusion: We conclude that 3-D audio is as beneficial in environments comprising moving stimuli as in those comprising static stimuli. Application: Operators in dynamic environments, such as aircraft cockpits, ground vehicles, and command-and-control centers, could benefit greatly from 3-D auditory technology when searching their environments for visual targets or other time-critical information. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REACTION time KW - ECCENTRICS & eccentricities KW - CONTROL rooms KW - RESEARCH KW - VEHICLES N1 - Accession Number: 51998036; McIntire, John P . 1; Email Address: john.mcintire@wpafb.af.mil Havig, Paul R. 1 Watamaniuk, Scott N. J. 2 Gilkey, Robert H. 2; Affiliation: 1: Havig, Air Force Research Laboratory, Wright-Patterson AFB, Ohio. 2: Wright State University, Dayton, Ohio.; Source Info: Feb2010, Vol. 52 Issue 1, p41; Subject Term: REACTION time; Subject Term: ECCENTRICS & eccentricities; Subject Term: CONTROL rooms; Subject Term: RESEARCH; Subject Term: VEHICLES; Number of Pages: 13p; Document Type: Article L3 - 10.1177/0018720810368806 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51998036&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carry, Benoît AU - Dumas, Christophe AU - Kaasalainen, Mikko AU - Berthier, Jérôme AU - Merline, William J. AU - Erard, Stéphane AU - Conrad, Al AU - Drummond, Jack D. AU - Hestroffer, Daniel AU - Fulchignoni, Marcello AU - Fusco, Thierry T1 - Physical properties of (2) Pallas JO - ICARUS JF - ICARUS Y1 - 2010/02// VL - 205 IS - 2 M3 - Article SP - 460 EP - 472 SN - 00191035 AB - Abstract: Ground-based high angular-resolution images of asteroid (2) Pallas at near-infrared wavelengths have been used to determine its physical properties (shape, dimensions, spatial orientation and albedo distribution). We acquired and analyzed adaptive optics (AO) J/H/K-band observations from Keck II and the Very Large Telescope taken during four Pallas oppositions between 2003 and 2007, with spatial resolution spanning 32–88km (image scales 13–20km/pixel). We improve our determination of the size, shape, and pole by a novel method that combines our AO data with 51 visual light-curves spanning 34 years of observations as well as archived occultation data. The shape model of Pallas derived here reproduces well both the projected shape of Pallas on the sky (average deviation of edge profile of 0.4pixel) and light-curve behavior (average deviation of 0.019 mag) at all the epochs considered. We resolved the pole ambiguity and found the spin-vector coordinates to be within 5° of [longitude, latitude]=[30°, −16°] in the Ecliptic J2000.0 reference frame, indicating a high obliquity of about 84°, leading to high seasonal contrast. The best triaxial-ellipsoid fit returns ellipsoidal radii of , and . From the mass of Pallas determined by gravitational perturbation on other minor bodies , [Michalak, G., 2000. Astron. Astrophys. 360, 363–374], we derive a density of significantly different from the density of C-type (1) Ceres of [Carry, B., Dumas, C., Fulchignoni, M., Merline, W.J., Berthier, J., Hestroffer, D., Fusco, T., Tamblyn, P., 2008. Astron. Astrophys. 478 (4), 235–244]. Considering the spectral similarities of Pallas and Ceres at visible and near-infrared wavelengths, this may point to fundamental differences in the interior composition or structure of these two bodies. We define a planetocentric longitude system for Pallas, following IAU guidelines. We also present the first albedo maps of Pallas covering ∼80% of the surface in K-band. These maps reveal features with diameters in the 70–180km range and an albedo contrast of about 6% with respect to the mean surface albedo. [Copyright &y& Elsevier] AB - Copyright of ICARUS is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASTRONOMICAL observations KW - RESOLUTION (Optics) KW - INFRARED spectroscopy KW - ADAPTIVE optics KW - PERTURBATION (Astronomy) KW - OCCULTATIONS (Astronomy) KW - PALLAS (Asteroid) KW - Adaptive optics KW - Asteroids KW - Asteroids, Surfaces KW - Infrared observations KW - Occultations N1 - Accession Number: 47832537; Carry, Benoît 1,2; Email Address: benoit.carry@obspm.fr Dumas, Christophe 1 Kaasalainen, Mikko 3 Berthier, Jérôme 4 Merline, William J. 5 Erard, Stéphane 2 Conrad, Al 6 Drummond, Jack D. 7 Hestroffer, Daniel 4 Fulchignoni, Marcello 2 Fusco, Thierry 8; Affiliation: 1: ESO, Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile 2: LESIA, Observatoire de Paris, CNRS, 5 Place Jules Janssen, 92190 Meudon Cedex, France 3: Department of Mathematics and Statistics, Gustaf Hallstromin Katu 2b, P.O. Box 68, FIN-00014 University of Helsinki, Finland 4: IMCCE, Observatoire de Paris, CNRS, 77 av. Denfert Rochereau, 75014 Paris, France 5: Southwest Research Institute, 1050 Walnut St. # 300, Boulder, CO 80302, USA 6: W.M. Keck Observatory, 65-1120 Mamalahoa Highway, Kamuela, HI 96743, USA 7: Starfire Optical Range, Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117-577, USA 8: ONERA, 29 avenue de la division Leclerc, BP 52, 92320 Chatillon Cedex, France; Source Info: Feb2010, Vol. 205 Issue 2, p460; Subject Term: ASTRONOMICAL observations; Subject Term: RESOLUTION (Optics); Subject Term: INFRARED spectroscopy; Subject Term: ADAPTIVE optics; Subject Term: PERTURBATION (Astronomy); Subject Term: OCCULTATIONS (Astronomy); Subject Term: PALLAS (Asteroid); Author-Supplied Keyword: Adaptive optics; Author-Supplied Keyword: Asteroids; Author-Supplied Keyword: Asteroids, Surfaces; Author-Supplied Keyword: Infrared observations; Author-Supplied Keyword: Occultations; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.icarus.2009.08.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47832537&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gunapala, Sarath D. AU - Bandara, Sumith V. AU - Liu, John K. AU - Mumolo, Jason M. AU - Ting, David Z. AU - Hill, Cory J. AU - Jean Nguyen AU - Simolon, Brian AU - Woolaway, James AU - Wang, Samuel C. AU - Weiping Li AU - LeVan, Paul D. AU - Tidrow, Meimei Z. T1 - Demonstration of Megapixel Dual-Band QWIP Focal Plane Array. JO - IEEE Journal of Quantum Electronics JF - IEEE Journal of Quantum Electronics Y1 - 2010/02// VL - 46 IS - 2 M3 - Article SP - 285 EP - 293 SN - 00189197 AB - Quantum well infrared photodetectors (QWIPs) are well known for their stability, high pixel-pixel uniformity and high pixel operability which are quintessential parameters for large area imaging arrays. In this paper we report the first demonstration of the megapixel-simultaneously-readable and pixel-co-registered dual-band QWIP focal plane array (FPA). The dual-band QWIP device was developed by stacking two multi-quantum-well stacks tuned to absorb two different infrared wavelengths. The full width at half maximum (FWHM) of the midwave infrared (MWIR) band extends from 4.4-5.1 μm and FWHM of the long-wave infrared (LWIR) band extends from 7.8-8.8 μm. Dual-band QWIP detector arrays were hybridized with direct injection 30 μm pixel pitch megapixel dual-band simultaneously readable CMOS read out integrated circuits using the indium bump hybridization technique. The initial dual-band megapixel QWIP FPAs were cooled to 68 K operating temperature. The preliminary data taken from the first megapixel QWIP FPA has shown system ΝΕΔΤ of 27 and 40 mK for MWIR and LWIR bands, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Journal of Quantum Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM wells KW - OPTOELECTRONIC devices KW - DETECTORS KW - RESEARCH KW - HYBRIDIZATION KW - WAVELENGTHS KW - Infrared detectors KW - infrared imaging KW - quantum well devices N1 - Accession Number: 48455728; Gunapala, Sarath D. 1 Bandara, Sumith V. 1 Liu, John K. 1 Mumolo, Jason M. 1 Ting, David Z. 1 Hill, Cory J. 1 Jean Nguyen 1 Simolon, Brian 2 Woolaway, James 2 Wang, Samuel C. 3 Weiping Li 3 LeVan, Paul D. 4 Tidrow, Meimei Z. 5; Affiliation: 1: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 USA 2: FLIR Systems Inc., Goleta, CA 93117 USA 3: GCS Inc., Torrance, CA 90505, USA 4: Air Force Research Laboratory, Kirtland Air Force Base, NM 87117 USA 5: Missile Defense Agency/AS,Washington, DC 20301 USA; Source Info: Feb2010, Vol. 46 Issue 2, p285; Subject Term: QUANTUM wells; Subject Term: OPTOELECTRONIC devices; Subject Term: DETECTORS; Subject Term: RESEARCH; Subject Term: HYBRIDIZATION; Subject Term: WAVELENGTHS; Author-Supplied Keyword: Infrared detectors; Author-Supplied Keyword: infrared imaging; Author-Supplied Keyword: quantum well devices; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1109/JQE.2009.2024550 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48455728&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sengupta, Shamik AU - Chatterjee, Mainak AU - Kwiat, Kevin A. T1 - A Game Theoretic Framework for Power Control in Wireless Sensor Networks. JO - IEEE Transactions on Computers JF - IEEE Transactions on Computers Y1 - 2010/02// VL - 59 IS - 2 M3 - Article SP - 231 EP - 242 SN - 00189340 AB - In infrastructure-less sensor networks, efficient usage of energy is very critical because of the limited energy available to the sensor nodes. Among various phenomena that consume energy, radio communication is by far the most demanding one. One of the effective ways to limit unnecessary energy loss is to control the power at which the nodes transmit signals. In this paper, we apply game theory to solve the power control problem in a CDMA-based distributed sensor network. We formulate a noncooperative game under incomplete information and study the existence of Nash equilibrium. With the help of this equilibrium, we devise a distributed algorithm for optimal power control and prove that the system is power stable only if the nodes comply with certain transmit power thresholds. We show that even in a noncooperative scenario, it is in the best interest of the nodes to comply with these thresholds. The power level at which a node should transmit, to maximize its utility, is evaluated. Moreover, we compare the utilities when the nodes are allowed to transmit with discrete and continuous power levels; the performance with discrete levels is upper bounded by the continuous case. We define a distortion metric that gives a quantitative measure of the goodness of having finite power levels and also find those levels that minimize the distortion. Numerical results demonstrate that the proposed algorithm achieves the best possible payoff/utility for the sensor nodes even by consuming less power. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Computers is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DETECTORS KW - ENERGY consumption KW - CODE division multiple access KW - GAME theory KW - NUMERICAL analysis KW - distributed power control KW - energy efficiency KW - game theory KW - Wireless sensor network N1 - Accession Number: 48265903; Sengupta, Shamik 1; Email Address: ssengupta@jjay.cuny.edu Chatterjee, Mainak 2; Email Address: mainak@eecs.ucf.edu Kwiat, Kevin A. 3; Email Address: Kevin.Kwiat@rl.af.mil; Affiliation: 1: Department of Mathematics and Computer Science, John Jay College of Criminal Justice of the CUNY, New York, NY 10019 2: School of Electrical Engineering and Computer Science, University of Central Florida, Orlando, FL 32816 3: Information Directorate, Air Force Research Laboratory, Rome, NY 13441; Source Info: Feb2010, Vol. 59 Issue 2, p231; Subject Term: DETECTORS; Subject Term: ENERGY consumption; Subject Term: CODE division multiple access; Subject Term: GAME theory; Subject Term: NUMERICAL analysis; Author-Supplied Keyword: distributed power control; Author-Supplied Keyword: energy efficiency; Author-Supplied Keyword: game theory; Author-Supplied Keyword: Wireless sensor network; Number of Pages: 12p; Illustrations: 1 Diagram, 9 Graphs; Document Type: Article L3 - 10.1109/TC.2009.82 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48265903&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Christe, Karl O. AU - Haiges, RaIf AU - Wilson, William W. AU - Boatz, Jerry A. T1 - Synthesis and Properties of N7O+. JO - Inorganic Chemistry JF - Inorganic Chemistry Y1 - 2010/02//2/1/2010 VL - 49 IS - 3 M3 - Article SP - 1245 EP - 1251 SN - 00201669 AB - The reaction of NOF2+SbF6- with an equimolar amounl ot HN3 in an anhydrous HF solution at -45°C produces N3NOF+SbF6-. When an excess of HN3 is used in this reaction, N7O+SbF6- is formed. However, this compound could not be isolated as a solid and rapidly decomposed in a quantitative manner with N2O evolution to N5+SbF6-. This reaclion represents a novel and more convenient Synthesis for N5SbF6- because NOF2+SbF6- is more readily accessible than N2F+SbF6- and the N5+ can be labeled in all five positions with 15N by Ihe simple use of terminally singly labeled N3-. The formation of the N7O+ cation was established by isotopic labeling experiments and theoretical calculations. It is shown that the addition of a second azido ligand to the same central atom allows the aflack of the negatively charged Nα atom of one ligand by the positively charged Nγ atom of the second ligand, thereby greatly lowering the activation energy barrier toward decomposition and explaining why geminal diazides are much less stable than either monoazides or vicinal diazides, [ABSTRACT FROM AUTHOR] AB - Copyright of Inorganic Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL reactions KW - LIGANDS KW - CATIONS KW - ATOMS KW - DECOMPOSITION (Chemistry) KW - AZIDES N1 - Accession Number: 48404583; Christe, Karl O. 1; Email Address: kchriste@usc.edu Haiges, RaIf 1 Wilson, William W. 1 Boatz, Jerry A. 2; Affiliation: 1: Laker Research Institute and Department of Chemistry, University of Southern California, Los Angeles, California 90089-1661 2: Air Force Research Laboratory, Edwards Air Force Base, California 93524; Source Info: 2/1/2010, Vol. 49 Issue 3, p1245; Subject Term: CHEMICAL reactions; Subject Term: LIGANDS; Subject Term: CATIONS; Subject Term: ATOMS; Subject Term: DECOMPOSITION (Chemistry); Subject Term: AZIDES; NAICS/Industry Codes: 325920 Explosives Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1021/ic9022213 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48404583&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Markovsky, P.E. AU - Semiatin, S.L. T1 - Microstructure and mechanical properties of commercial-purity titanium after rapid (induction) heat treatment JO - Journal of Materials Processing Technology JF - Journal of Materials Processing Technology Y1 - 2010/02// VL - 210 IS - 3 M3 - Article SP - 518 EP - 528 SN - 09240136 AB - Abstract: Microstructure changes in commercial-purity titanium (CP-Ti) during local rapid (induction) heat treatment (LRHT) and their influence on tensile and fatigue properties were investigated. It was found that some regimes of LRHT increase the tensile strength by ∼40MPa and the fatigue limit by ∼1.5 times. It was concluded that the improvement in mechanical properties is associated with the formation of substructure, martensite, and residual stresses during LRHT. [Copyright &y& Elsevier] AB - Copyright of Journal of Materials Processing Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - MATERIALS -- Mechanical properties KW - HEAT treatment KW - TITANIUM KW - MATERIALS -- Fatigue KW - STRENGTH of materials KW - MARTENSITE KW - RESIDUAL stresses KW - Commercial-purity titanium KW - Fatigue KW - Local rapid (induction) heat treatment KW - Mechanical properties KW - Microstructure KW - Residual stresses N1 - Accession Number: 47057458; Markovsky, P.E. 1; Email Address: pmark@imp.kiev.ua Semiatin, S.L. 2; Affiliation: 1: G.V. Kurdyumov Institute for Metal Physics, Kyiv, Ukraine 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Source Info: Feb2010, Vol. 210 Issue 3, p518; Subject Term: MICROSTRUCTURE; Subject Term: MATERIALS -- Mechanical properties; Subject Term: HEAT treatment; Subject Term: TITANIUM; Subject Term: MATERIALS -- Fatigue; Subject Term: STRENGTH of materials; Subject Term: MARTENSITE; Subject Term: RESIDUAL stresses; Author-Supplied Keyword: Commercial-purity titanium; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Local rapid (induction) heat treatment; Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Residual stresses; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.jmatprotec.2009.10.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47057458&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fair, Geoff E. AU - Hay, Randall S. AU - Boakye, Emmanuel E. AU - Morgan, Peter E. D. AU - Marzke, Robert F. AU - Sharma, Ramesh T1 - Precipitation Coating of Monazite on Woven Ceramic Fibers: III—Coating without Strength Degradation Using a Phytic Acid Precursor. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2010/02// VL - 93 IS - 2 M3 - Article SP - 420 EP - 428 PB - Wiley-Blackwell SN - 00027820 AB - Multiple coatings of La-monazite (LaPO4) were applied to Nextel™ 610 and 720 oxide fibers using a heterogeneous nucleation and growth coating process with phytic acid solution precursors. The as-processed coatings were found to be largely amorphous. Coated fibers were heat treated at 1200°C for 1–2 h, whereupon the coatings crystallized to porous LaPO4 with thin (50–100 nm) layers of AlPO4 at the fiber–coating interface. Heat-treated fibers exhibited full strength retention, in marked contrast to fibers coated by precipitation using citric acid precursors as in a previous work. The microstructural evolution of the amorphous coatings was studied as a function of temperature. AlPO4 forms at the fiber–coating interface between 700° and 800°C, before high-temperature outgassing of the coating as measured by TGA. NMR spectroscopy was used to study as-precipitated powders and as-processed coatings to gain insights into the structural nature of the materials. A possible explanation for the retention of fiber strength through the coating process is proposed and discussed in light of the experimental evidence. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE coatings KW - PRECIPITATION (Chemistry) KW - MONAZITE KW - NUCLEATION KW - COATING processes KW - MICROSTRUCTURE KW - CERAMIC fibers KW - PHYTIC acid KW - TECHNICAL chemistry N1 - Accession Number: 47828655; Fair, Geoff E. 1; Email Address: geoff.fair@wpafb.af.mil Hay, Randall S. 1 Boakye, Emmanuel E. 2 Morgan, Peter E. D. Marzke, Robert F. 3 Sharma, Ramesh 4; Affiliation: 1: Ceramics Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio. 2: UES Inc., Dayton, Ohio. 3: Department of Physics, Arizona State University, Tempe, Arizona. 4: Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona.; Source Info: Feb2010, Vol. 93 Issue 2, p420; Subject Term: SURFACE coatings; Subject Term: PRECIPITATION (Chemistry); Subject Term: MONAZITE; Subject Term: NUCLEATION; Subject Term: COATING processes; Subject Term: MICROSTRUCTURE; Subject Term: CERAMIC fibers; Subject Term: PHYTIC acid; Subject Term: TECHNICAL chemistry; NAICS/Industry Codes: 327999 All Other Miscellaneous Nonmetallic Mineral Product Manufacturing; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 9p; Illustrations: 1 Black and White Photograph, 6 Diagrams, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2009.03406.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47828655&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brown, Janice M. AU - Bray, Robert M. AU - Hartzell, Michael C. T1 - A Comparison of Alcohol Use and Related Problems Among Women and Men in the Military. JO - Military Medicine JF - Military Medicine Y1 - 2010/02// VL - 175 IS - 2 M3 - Article SP - 101 EP - 107 PB - AMSUS SN - 00264075 AB - Using data from the 2002 Department of Defense Survey of Health Related Behaviors. We examined levels of drinking and alcohol-related problems (dependence symptoms, driving after drinking, productivity loss, serious consequences) for enlisted men and women and male and female officers. Findings showed that men were more likely than women to be heavy or binge drinkers and to experience alcohol-related problems. Similarly, enlisted men and women were more likely than male and female officers to be heavy or binge drinkers. Driving after drinking was more common among men than women and more common among officers than enlisted personnel. Officers had lower rates of dependence symptoms and other serious consequences than enlisted personnel. Despite men's heavier drinking, women showed equal or higher rates of dependence symptoms and productivity loss and appeared to be at risk for alcohol problems at lower levels of consumption. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DRINKING of alcoholic beverages KW - MILITARY personnel -- United States KW - BINGE drinking KW - ALCOHOLISM KW - HEALTH surveys -- United States KW - UNITED States N1 - Accession Number: 48023549; Brown, Janice M. 1 Bray, Robert M. 1 Hartzell, Michael C. 2; Affiliation: 1: RTI International, 3040 Cornwallis Road, Research Triangle park, NC 27709 2: United States Air Force HQ AFSOC/SG 100 Bartley St., Hurlburt Field, FL 32544-5273; Source Info: Feb2010, Vol. 175 Issue 2, p101; Subject Term: DRINKING of alcoholic beverages; Subject Term: MILITARY personnel -- United States; Subject Term: BINGE drinking; Subject Term: ALCOHOLISM; Subject Term: HEALTH surveys -- United States; Subject Term: UNITED States; NAICS/Industry Codes: 722410 Drinking Places (Alcoholic Beverages); Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48023549&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mohammad Kurdi AU - Philip Beran AU - Bret Stanford AU - Richard Snyder T1 - Optimal actuation of nonlinear resonant systems. JO - Structural & Multidisciplinary Optimization JF - Structural & Multidisciplinary Optimization Y1 - 2010/02// VL - 41 IS - 1 M3 - Article SP - 65 EP - 86 SN - 1615147X AB - Abstract  In this study, we examine a new approach for actuation of dynamical systems with minimum work and maximum amplitude while maintaining constraints on the actuation force. Two methodology issues are addressed in the paper: sensitivity analysis about the nonlinear transient response and exploration of the strongly nonlinear relationship between the two objectives and the actuation design variables. The optimization analysis is carried out on lightly damped Duffing systems. The formulation of the optimization problem is found ideally suited to resolve the difficulty of dependence of response on initial conditions. The tradeoff curve of work and amplitude is computed. The optimal actuation strove to compensate for the limited force amplitude by an abrupt change in the force in time. Finally the optimization procedure is demonstrated on the kinematic design of hovering insect flight. The optimal design gives 50% reduction in power consumption, with a larger cutback for an actuation with high acceleration. [ABSTRACT FROM AUTHOR] AB - Copyright of Structural & Multidisciplinary Optimization is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR systems KW - SENSITIVITY analysis KW - TRANSIENTS (Dynamics) KW - INSECT flight KW - MATHEMATICAL optimization KW - KINEMATICS KW - RESONANCE N1 - Accession Number: 47528888; Mohammad Kurdi 1 Philip Beran 1 Bret Stanford 1 Richard Snyder 1; Affiliation: 1: Wright-Patterson Air Force Base Air Force Research Laboratory, Air Vehicles Directorate Building 146, 2210 Eighth Street Dayton Ohio 45433 USA; Source Info: Feb2010, Vol. 41 Issue 1, p65; Subject Term: NONLINEAR systems; Subject Term: SENSITIVITY analysis; Subject Term: TRANSIENTS (Dynamics); Subject Term: INSECT flight; Subject Term: MATHEMATICAL optimization; Subject Term: KINEMATICS; Subject Term: RESONANCE; Number of Pages: 22p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47528888&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ahamed, Maqusood AU - Posgai, Ryan AU - Gorey, Timothy J. AU - Nielsen, Mark AU - Hussain, Saber M. AU - Rowe, John J. T1 - Silver nanoparticles induced heat shock protein 70, oxidative stress and apoptosis in Drosophila melanogaster JO - Toxicology & Applied Pharmacology JF - Toxicology & Applied Pharmacology Y1 - 2010/02// VL - 242 IS - 3 M3 - Article SP - 263 EP - 269 SN - 0041008X AB - Abstract: Due to the intensive commercial application of silver nanoparticles (Ag NPs), risk assessment of this nanoparticle is of great importance. Our previous in vitro study demonstrated that Ag NPs caused DNA damage and apoptosis in mouse embryonic stem cells and fibroblasts. However, toxicity of Ag NPs in vivo is largely lacking. This study was undertaken to examine the toxic effects of well-characterized polysaccharide coated 10 nm Ag NPs on heat shock stress, oxidative stress, DNA damage and apoptosis in Drosophila melanogaster. Third instar larvae of D. melanogaster were fed a diet of standard cornmeal media mixed with Ag NPs at the concentrations of 50 and 100 μg/ml for 24 and 48 h. Ag NPs up-regulated the expression of heat shock protein 70 and induced oxidative stress in D. melanogaster. Malondialdehyde level, an end product of lipid peroxidation was significantly higher while antioxidant glutathione content was significantly lower in Ag NPs exposed organisms. Activities of antioxidant enzyme superoxide dismutase and catalase were also significantly higher in the organisms exposed to Ag NPs. Furthermore, Ag NPs up-regulated the cell cycle checkpoint p53 and cell signaling protein p38 that are involved in the DNA damage repair pathway. Moreover, activities of caspase-3 and caspase-9, markers of apoptosis were significantly higher in Ag NPs exposed organisms. The results indicate that Ag NPs in D. melanogaster induce heat shock stress, oxidative stress, DNA damage and apoptosis. This study suggests that the organism is stressed and thus warrants more careful assessment of Ag NPs using in vivo models to determine if chronic exposure presents developmental and reproductive toxicity. [Copyright &y& Elsevier] AB - Copyright of Toxicology & Applied Pharmacology is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLOIDAL gold KW - HEAT shock proteins KW - OXIDATIVE stress KW - APOPTOSIS KW - DROSOPHILA melanogaster KW - RISK assessment KW - DNA damage KW - MICE as laboratory animals KW - EMBRYONIC stem cells KW - FIBROBLASTS KW - SUPEROXIDE dismutase KW - Apoptosis KW - Hsp 70 KW - Oxidative stress KW - Silver nanoparticles N1 - Accession Number: 47449781; Ahamed, Maqusood 1 Posgai, Ryan 1 Gorey, Timothy J. 1 Nielsen, Mark 1 Hussain, Saber M. 2 Rowe, John J. 1; Email Address: John.Rowe@notes.udayton.edu; Affiliation: 1: Department of Biology, Center for Tissue Regeneration and Engineering, University of Dayton, Dayton, OH 45469, USA 2: Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: Feb2010, Vol. 242 Issue 3, p263; Subject Term: COLLOIDAL gold; Subject Term: HEAT shock proteins; Subject Term: OXIDATIVE stress; Subject Term: APOPTOSIS; Subject Term: DROSOPHILA melanogaster; Subject Term: RISK assessment; Subject Term: DNA damage; Subject Term: MICE as laboratory animals; Subject Term: EMBRYONIC stem cells; Subject Term: FIBROBLASTS; Subject Term: SUPEROXIDE dismutase; Author-Supplied Keyword: Apoptosis; Author-Supplied Keyword: Hsp 70; Author-Supplied Keyword: Oxidative stress; Author-Supplied Keyword: Silver nanoparticles; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.taap.2009.10.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47449781&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Acharya, K.P. AU - Mahalingam, K. AU - Ullrich, B. T1 - Structural, compositional, and optoelectronic properties of thin-film CdS on p-GaAs prepared by pulsed-laser deposition JO - Thin Solid Films JF - Thin Solid Films Y1 - 2010/01/31/ VL - 518 IS - 7 M3 - Article SP - 1784 EP - 1787 SN - 00406090 AB - Abstract: Thin-film CdS (300–400nm) was deposited onto p-GaAs with low-temperature pulsed-laser deposition (PLD) using 532nm emission of a Nd:YAG laser (6ns, 10Hz). The ablation threshold takes place at a fluence of 0.64J/cm2 and the deposition rate reaches its maximum at 2.68J/cm2, while further fluence increase caused a deposition rate drop due to plume shielding. X-ray investigations illustrated that the CdS film texture is composed of nano-sized crystallites (10–30nm) embedded in an amorphous matrix. Energy dispersive analysis of X-ray and electron probe microanalysis revealed almost stoichiometric composition. Alternating photocurrent spectroscopy showed that the CdS/GaAs sample exhibits intrinsic room-temperature responsivity, which might be useful for specific optoelectronic interconnects. The work emphasizes versatility and straightforwardness of PLD to form operative devices based on hetero-pairing. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR films KW - CADMIUM sulfide KW - GALLIUM arsenide semiconductors KW - OPTOELECTRONICS KW - PULSED laser deposition KW - ND-YAG lasers KW - LOW temperatures KW - HETEROSTRUCTURES KW - Cds/GaAs heterostructures KW - Deposition rate KW - Photocurrent KW - Pulsed-laser deposition KW - Thin-film Cds N1 - Accession Number: 47609050; Acharya, K.P. 1 Mahalingam, K. 2 Ullrich, B. 1,2; Email Address: bruno@kottan-labs.bgsu.edu; Affiliation: 1: Centers for Materials and Photochemical Sciences, Department of Physics and Astronomy, Bowling Green State University, Bowling Green, OH, 43403-0209, United States 2: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7707, United States; Source Info: Jan2010, Vol. 518 Issue 7, p1784; Subject Term: SEMICONDUCTOR films; Subject Term: CADMIUM sulfide; Subject Term: GALLIUM arsenide semiconductors; Subject Term: OPTOELECTRONICS; Subject Term: PULSED laser deposition; Subject Term: ND-YAG lasers; Subject Term: LOW temperatures; Subject Term: HETEROSTRUCTURES; Author-Supplied Keyword: Cds/GaAs heterostructures; Author-Supplied Keyword: Deposition rate; Author-Supplied Keyword: Photocurrent; Author-Supplied Keyword: Pulsed-laser deposition; Author-Supplied Keyword: Thin-film Cds; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.tsf.2009.09.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47609050&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kerkines, Ioannis S. K. AU - Morokuma, Keiji AU - Iordanova, Nedialka AU - Viggiano, A. A. T1 - Experimental and theoretical study of the reaction of POCl3- with O2. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2010/01/28/ VL - 132 IS - 4 M3 - Article SP - 044309 PB - American Institute of Physics SN - 00219606 AB - The oxidation of the trichlorooxyphosphorus anion (POCl3-), which takes place in combustion flames, has been examined experimentally at a variety of temperatures and theoretically via ab initio and density functional methods. The reaction was examined in a turbulent ion flow tube and kinetics was measured between 300 and 626 K, estimating an overall reaction barrier of 1.23 kcal/mol. Calculations at the density functional, Mo\ller–Plesset second order perturbation, and coupled cluster levels of theory with basis sets up to augmented triple-ζ quality point to a multistep reaction mechanism involving an initial [OP(Cl)3(OO)]- intermediate, an adduct between triplet O2 with POCl3-, subsequent formation of a four-membered nonplanar P[Single_Bond]O[Single_Bond]O[Single_Bond]Cl ring transition state, with concomitant breaking of the P[Single_Bond]Cl and O[Single_Bond]O bonds to provide a transient intermediate [OP(Cl)2OO...Cl]-, which, in turn, converts to the product complex (POCl2-)(ClO) upon formation of the Cl[Single_Bond]O bond without barrier. The calculated energy of the four-membered transition state is considered to be in good agreement with the small overall barrier found by experiment. The final step is responsible for the large exothermicity of the reaction. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH -- Methodology KW - OXIDATION KW - ANIONS KW - DENSITY functionals KW - DYNAMICS KW - PERTURBATION (Mathematics) N1 - Accession Number: 47807159; Kerkines, Ioannis S. K. 1 Morokuma, Keiji 1; Email Address: morokuma@emory.edu Iordanova, Nedialka 2 Viggiano, A. A. 3; Email Address: albert.viggiano@hanscom.af.mil; Affiliation: 1: Department of Chemistry and Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, USA 2: Department of Chemistry, Georgia Southwestern State University, Americus, Georgia 31709, USA 3: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731, USA; Source Info: 1/28/2010, Vol. 132 Issue 4, p044309; Subject Term: RESEARCH -- Methodology; Subject Term: OXIDATION; Subject Term: ANIONS; Subject Term: DENSITY functionals; Subject Term: DYNAMICS; Subject Term: PERTURBATION (Mathematics); Number of Pages: 9p; Illustrations: 5 Diagrams, 5 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.3299276 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47807159&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nicole Eyet AU - Anthony Midey AU - Veronica M. Bierbaum AU - A. A. Viggiano T1 - Survey of the Reactivity of O2(a 1Δg) with Negative Ions. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2010/01/28/ VL - 114 IS - 3 M3 - Article SP - 1270 EP - 1276 SN - 10895639 AB - The reactivity of O2(a 1Δg) was studied with a series of anions, including −CH2CN, −CH2NO2, −CH2C(O)H, CH3C(O)CH2−, C2H5O−, (CH3)2CHO−, CF3CH2O−, CF3−, HC2−, HCCO−, HC(O)O−, CH3C(O)O−, CH3OC(O)CH2−, and HS−. Reaction rate constants and product ion branching ratios were measured. All of the carbanions react through a common pathway to produce their major products. O2(a) adds across a bond at the site of the negative charge, resulting in the cleavage of this bond and the OO bond. Oxyanions react through a hydride transfer to produce their major products. Proton transfer within these product ion−dipole complexes can occur, where the final branching ratios reflect the basicity of the resulting anions. Several of these anions (CF3−, HC2−, CH3OC(O)CH2−) were also found to undergo several sequential reactions within a single encounter. These three basic types of mechanisms are supported by calculations; a potential energy diagram for each type of reaction has been calculated. Additionally, six of these reactions had been qualitatively studied before; our results are in agreement with previous data. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REACTIVITY (Chemistry) KW - ANIONS KW - HYDRIDES KW - SOLUTION (Chemistry) KW - CHEMICAL kinetics KW - BRANCHING ratios (Nuclear physics) N1 - Accession Number: 47751188; Nicole Eyet 1 Anthony Midey 1 Veronica M. Bierbaum 1 A. A. Viggiano 1; Affiliation: 1: Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, and Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom Air Force Base, Massachusetts 01731-3010; Source Info: Jan2010, Vol. 114 Issue 3, p1270; Subject Term: REACTIVITY (Chemistry); Subject Term: ANIONS; Subject Term: HYDRIDES; Subject Term: SOLUTION (Chemistry); Subject Term: CHEMICAL kinetics; Subject Term: BRANCHING ratios (Nuclear physics); Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47751188&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Steven D. Chambreau AU - Ghanshyam L. Vaghjiani AU - Albert To AU - Christine Koh AU - Daniel Strasser AU - Oleg Kostko AU - Stephen R. Leone T1 - Heats of Vaporization of Room Temperature Ionic Liquids by Tunable Vacuum Ultraviolet Photoionization. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2010/01/28/ VL - 114 IS - 3 M3 - Article SP - 1361 EP - 1367 SN - 15206106 AB - The heats of vaporization of the room temperature ionic liquids (RTILs) N-butyl-N-methylpyrrolidinium bistrifluorosulfonylimide, N-butyl-N-methylpyrrolidinium dicyanamide, and 1-butyl-3-methylimidazolium dicyanamide are determined using a heated effusive vapor source in conjunction with single photon ionization by a tunable vacuum ultraviolet synchrotron source. The relative gas phase ionic liquid vapor densities in the effusive beam are monitored by clearly distinguished dissociative photoionization processes via a time-of-flight mass spectrometer at a tunable vacuum ultraviolet beamline 9.0.2.3 (Chemical Dynamics Beamline) at the Advanced Light Source synchrotron facility. Resulting in relatively few assumptions, through the analysis of both parent cations and fragment cations, the heat of vaporization of N-butyl-N-methylpyrrolidinium bistrifluorosulfonylimide is determined to be ΔHvap(298.15 K) = 195 ± 19 kJ mol−1. The observed heats of vaporization of 1-butyl-3-methylimidazolium dicyanamide (ΔHvap(298.15 K) = 174 ± 12 kJ mol−1) and N-butyl-N-methylpyrrolidinium dicyanamide (ΔHvap(298.15 K) = 171 ± 12 kJ mol−1) are consistent with reported experimental values using electron impact ionization. The tunable vacuum ultraviolet source has enabled accurate measurement of photoion appearance energies. These appearance energies are in good agreement with MP2 calculations for dissociative photoionization of the ion pair. These experimental heats of vaporization, photoion appearance energies, and ab initiocalculations corroborate vaporization of these RTILs as intact cation−anion pairs. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEATS of vaporization KW - IONIC liquids KW - PHOTOIONIZATION KW - FAR ultraviolet radiation KW - TIME-of-flight mass spectrometry KW - MOLECULAR weights KW - IONIZATION (Atomic physics) N1 - Accession Number: 47752001; Steven D. Chambreau 1 Ghanshyam L. Vaghjiani 1 Albert To 1 Christine Koh 1 Daniel Strasser 1 Oleg Kostko 1 Stephen R. Leone 1; Affiliation: 1: ERC, Incorporated, Edwards Air Force Base, California 93524, Air Force Research Laboratory, Edwards Air Force Base, California 93524, Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, Departments of Chemistry and Physics and Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720; Source Info: Jan2010, Vol. 114 Issue 3, p1361; Subject Term: HEATS of vaporization; Subject Term: IONIC liquids; Subject Term: PHOTOIONIZATION; Subject Term: FAR ultraviolet radiation; Subject Term: TIME-of-flight mass spectrometry; Subject Term: MOLECULAR weights; Subject Term: IONIZATION (Atomic physics); Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47752001&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Peter A. Mirau AU - Marjan Lyons T1 - Intermolecular Interactions and Dynamics in Polymer/C60Blends. JO - Macromolecules JF - Macromolecules Y1 - 2010/01/26/ VL - 43 IS - 2 M3 - Article SP - 625 EP - 629 SN - 00249297 AB - Solid-state NMR and X-ray scattering are used to study intermolecular interactions in miscible blends of C60with polystyrene, poly(9-vinylcarbazole), and phase-separate blends with poly(ethylene oxide). Miscible C60blends prepared by solution precipitation with polystyrene and poly(9-vinylcarbazole) are purple in color, show intermolecular C60−polymer cross-polarization, and do not show the scattering peaks from C60crystallites. The C60dynamics measured using the chemical shift anisotropy filter pulse sequence shows that C60rotates rapidly in the blend and averages the anisotropic line shape, while blending with C60has a minor effect on the host polymer dynamics. These results demonstrate that C60interacts weakly with polymers in miscible blends. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULE-molecule collisions KW - FULLERENE polymers KW - MOLECULAR dynamics KW - NUCLEAR magnetic resonance spectroscopy KW - X-ray scattering KW - PHASE partition KW - PRECIPITATION (Chemistry) KW - POLYMER solutions N1 - Accession Number: 47751474; Peter A. Mirau 1 Marjan Lyons 1; Affiliation: 1: †Nanostructural and Biological Materials Branch, Materials Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jan2010, Vol. 43 Issue 2, p625; Subject Term: MOLECULE-molecule collisions; Subject Term: FULLERENE polymers; Subject Term: MOLECULAR dynamics; Subject Term: NUCLEAR magnetic resonance spectroscopy; Subject Term: X-ray scattering; Subject Term: PHASE partition; Subject Term: PRECIPITATION (Chemistry); Subject Term: POLYMER solutions; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47751474&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Daniel Strasser AU - Fabien Goulay AU - Leonid Belau AU - Oleg Kostko AU - Christine Koh AU - Steven D. Chambreau AU - Ghanshyam L. Vaghjiani AU - Musahid Ahmed AU - Stephen R. Leone T1 - Tunable Wavelength Soft Photoionization of Ionic Liquid Vapors. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2010/01/21/ VL - 114 IS - 2 M3 - Article SP - 879 EP - 883 SN - 10895639 AB - Combined data of photoelectron spectra and photoionization efficiency curves in the near threshold ionization region of isolated ion pairs from [emim][Tf2N], [emim][Pf2N], and [dmpim][Tf2N] ionic liquid vapors reveal small shifts in the ionization energies of ion-pair systems due to cation and anion substitutions. Shifts toward higher binding energy following anion substitution are attributed to increased electronegativity of the anion itself, whereas shifts toward lower binding energies following cation substitution are attributed to an increase in the cation−anion distance that causes a lower Coulombic binding potential. The predominant ionization mechanism in the near threshold photon energy region is identified as dissociative ionization, involving the dissociation of the ion pair and the production of intact cations as the positively charged products. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TUNABLE lasers KW - PHOTOIONIZATION KW - IONIC liquids KW - PHOTOELECTRON spectroscopy KW - ELECTRONEGATIVITY KW - DISSOCIATION (Chemistry) N1 - Accession Number: 47751211; Daniel Strasser 1 Fabien Goulay 1 Leonid Belau 1 Oleg Kostko 1 Christine Koh 1 Steven D. Chambreau 1 Ghanshyam L. Vaghjiani 1 Musahid Ahmed 1 Stephen R. Leone 1; Affiliation: 1: Departments of Chemistry and Physics, University of California, Berkeley, California 94720, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, ERC Incorporated and Air Force Research Laboratory, Edwards Air Force Base, California 93524; Source Info: Jan2010, Vol. 114 Issue 2, p879; Subject Term: TUNABLE lasers; Subject Term: PHOTOIONIZATION; Subject Term: IONIC liquids; Subject Term: PHOTOELECTRON spectroscopy; Subject Term: ELECTRONEGATIVITY; Subject Term: DISSOCIATION (Chemistry); Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47751211&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tan, W. D. AU - Su, C. Y. AU - Knize, R. J. AU - Xie, G. Q. AU - Li, L. J. AU - Tang, D. Y. T1 - Mode locking of ceramic Nd:yttrium aluminum garnet with graphene as a saturable absorber. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2010/01/18/ VL - 96 IS - 3 M3 - Article SP - 031106 PB - American Institute of Physics SN - 00036951 AB - The mode-locking of a ceramic Nd:yttrium aluminum garnet (YAG) solid-state laser (SSL) with solution processed graphene as saturable absorber (SA) was demonstrated. Transform-limited pulses with duration of 4 ps centered at 1064 nm were generated for a nondispersion compensated Nd:YAG SSL. Z-scan studies revealed that the graphene SA has a saturation intensity of 0.87 M W cm-2 and a normalized modulation depth of 17.4%. Our results illustrate the potential of using graphene as a mode locker for SSLs. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM silicates KW - LIGHT metals KW - SILICATE minerals KW - SOLID-state lasers KW - GEMS & precious stones KW - GARNET N1 - Accession Number: 47680120; Tan, W. D. 1 Su, C. Y. 2 Knize, R. J. 1,3 Xie, G. Q. 1 Li, L. J. 2 Tang, D. Y. 1; Email Address: edytang@ntu.edu.sg; Affiliation: 1: School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore 2: School of Material Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore 3: Department of Physics, United States Air Force Academy, Colorado 80840, USA; Source Info: 1/18/2010, Vol. 96 Issue 3, p031106; Subject Term: ALUMINUM silicates; Subject Term: LIGHT metals; Subject Term: SILICATE minerals; Subject Term: SOLID-state lasers; Subject Term: GEMS & precious stones; Subject Term: GARNET; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 418920 Mineral, ore and precious metal merchant wholesalers; NAICS/Industry Codes: 423940 Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers; NAICS/Industry Codes: 414410 Jewellery and watch merchant wholesalers; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.3292018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47680120&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yang, Ying AU - Bei, H. AU - Chen, Shuanglin AU - George, E.P. AU - Tiley, Jaimie AU - Chang, Y. Austin T1 - Effects of Ti, Zr, and Hf on the phase stability of Mo_ss+Mo3Si+Mo5SiB2 alloys at 1600 °C. JO - Acta Materialia JF - Acta Materialia Y1 - 2010/01/15/ VL - 58 IS - 2 M3 - Article SP - 541 EP - 548 SN - 13596454 AB - Abstract: Understanding the stability of the three-phase Mo_ss+Mo3Si+Mo5SiB2 region is important for alloy design of Mo–Si–B-based refractory metal intermetallic composites. In this work, thermodynamic modeling is coupled with guided experiments to study phase stability in this three-phase region of the Mo–Si–B–X (X=Ti, Zr, Hf) system. Both the calculated and experimental results show that additions of Zr and Hf limit significantly the stability of the three-phase region because of the formation of the ternary phases MoSiZr and MoSiHf, while Ti addition leads to a much larger region of stability for the three-phase equilibrium. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT resistant alloys KW - SILICIDES KW - THERMODYNAMICS KW - INTERMETALLIC compounds KW - PHASE rule & equilibrium KW - ZIRCONIUM KW - TITANIUM KW - CALPHAD KW - Multicomponent phase equilibrium KW - Refractory metals KW - Silicides KW - Thermodynamics N1 - Accession Number: 45525499; Yang, Ying 1 Bei, H. 2 Chen, Shuanglin 1 George, E.P. 2,3 Tiley, Jaimie 4 Chang, Y. Austin 5; Email Address: Changy@cae.wisc.edu; Affiliation: 1: CompuTherm LLC, Madison, WI 53719, USA 2: Oak Ridge National Laboratory, Materials Science and Technology Division, Oak Ridge, TN 37831, USA 3: University of Tennessee, Department of Materials and Engineering, Knoxville, TN 37996, USA 4: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 5: University of Wisconsin-Madison, Madison, WI 53705, USA; Source Info: Jan2010, Vol. 58 Issue 2, p541; Subject Term: HEAT resistant alloys; Subject Term: SILICIDES; Subject Term: THERMODYNAMICS; Subject Term: INTERMETALLIC compounds; Subject Term: PHASE rule & equilibrium; Subject Term: ZIRCONIUM; Subject Term: TITANIUM; Author-Supplied Keyword: CALPHAD; Author-Supplied Keyword: Multicomponent phase equilibrium; Author-Supplied Keyword: Refractory metals; Author-Supplied Keyword: Silicides; Author-Supplied Keyword: Thermodynamics; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.actamat.2009.09.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45525499&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gadhamshetty, Venkataramana AU - Arudchelvam, Yalini AU - Nirmalakhandan, Nagamany AU - Johnson, David C. T1 - Modeling dark fermentation for biohydrogen production: ADM1-based model vs. Gompertz model JO - International Journal of Hydrogen Energy JF - International Journal of Hydrogen Energy Y1 - 2010/01/15/ VL - 35 IS - 2 M3 - Article SP - 479 EP - 490 SN - 03603199 AB - Abstract: Biohydrogen production by dark fermentation in batch reactors was modeled using the Gompertz equation and a model based on Anaerobic Digestion Model (ADM1). The ADM1 framework, which has been well accepted for modeling methane production by anaerobic digestion, was modified in this study for modeling hydrogen production. Experimental hydrogen production data from eight reactor configurations varying in pressure conditions, temperature, type and concentration of substrate, inocula source, and stirring conditions were used to evaluate the predictive abilities of the two modeling approaches. Although the quality of fit between the measured and fitted hydrogen evolution by the Gompertz equation was high in all the eight reactor configurations with r 2 ∼0.98, each configuration required a different set of model parameters, negating its utility as a general approach to predict hydrogen evolution. On the other hand, the ADM1-based model (ADM1BM) with predefined parameters was able to predict COD, cumulative hydrogen production, as well as volatile fatty acids production, albeit at a slightly lower quality of fit. Agreement between the experimental temporal hydrogen evolution data and the ADM1BM predictions was statistically significant with r 2 >0.91 and p-value <1E-04. Sensitivity analysis of the validated model revealed that hydrogen production was sensitive to only six parameters in the ADM1BM. [Copyright &y& Elsevier] AB - Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROGEN production KW - BIOMASS energy KW - FERMENTATION KW - BIOREACTORS KW - ENGINEERING models KW - TEMPERATURE effect KW - ANAEROBIC digestion (Sewage purification) KW - PREDICTION models KW - ADM1 KW - Bioenergy KW - Biohydrogen KW - Dark fermentation KW - Modeling N1 - Accession Number: 47596078; Gadhamshetty, Venkataramana 1; Email Address: vgadhamshetty@fairpoint.net Arudchelvam, Yalini 2 Nirmalakhandan, Nagamany 2 Johnson, David C. 3; Affiliation: 1: Air Force Research Laboratory, Tyndall AFB, 139 Barnes Drive, Panama City, FL 32403, USA 2: Civil Engineering Department, New Mexico State University, Las Cruces, NM 88003, USA 3: Institute for Energy and Environment, New Mexico State University, Las Cruces, NM 88003, USA; Source Info: Jan2010, Vol. 35 Issue 2, p479; Subject Term: HYDROGEN production; Subject Term: BIOMASS energy; Subject Term: FERMENTATION; Subject Term: BIOREACTORS; Subject Term: ENGINEERING models; Subject Term: TEMPERATURE effect; Subject Term: ANAEROBIC digestion (Sewage purification); Subject Term: PREDICTION models; Author-Supplied Keyword: ADM1; Author-Supplied Keyword: Bioenergy; Author-Supplied Keyword: Biohydrogen; Author-Supplied Keyword: Dark fermentation; Author-Supplied Keyword: Modeling; NAICS/Industry Codes: 221117 Biomass Electric Power Generation; NAICS/Industry Codes: 221119 Other electric power generation; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.ijhydene.2009.11.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47596078&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Relph, Rachael A. AU - Guasco, Timothy L. AU - Elliott, Ben M. AU - Kamrath, Michael Z. AU - McCoy, Anne B. AU - Steele, Ryan P. AU - Schofield, Daniel P. AU - Jordan, Kenneth D. AU - Viggiano, Albert A. AU - Ferguson, Eldon E. AU - Johnson, Mark A. T1 - How the Shape of an H-Bonded Network Controls Proton-Coupled Water Activation in HONO Formation. JO - Science JF - Science Y1 - 2010/01/15/ VL - 327 IS - 5963 M3 - Article SP - 308 EP - 312 SN - 00368075 AB - Many chemical reactions in atmospheric aerosols and bulk aqueous environments are influenced by the surrounding solvation shell, but the precise molecular interactions underlying such effects have rarely been elucidated. We exploited recent advances in isomer-specific cluster vibrational spectroscopy to explore the fundamental relation between the hydrogen (H)--bonding arrangement of a set of ion-solvating water molecules and the chemical activity of this ensemble. We find that the extent to which the nitrosonium ion (NO+) and water form nitrous acid (HONO) and a hydrated proton cluster in the critical trihydrate depends sensitively on-the geometrical arrangement of the water molecules in the network. Theoretical analysis of these data details the role of the water network in promoting charge delocalization. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATMOSPHERIC chemistry KW - HYDROGEN bonding KW - RESEARCH KW - NITROUS acid KW - NITRIC oxide KW - NITROGEN oxides -- Environmental aspects KW - CHEMICAL reactions KW - MOLECULAR structure KW - SOLVATION KW - AEROSOLS (Sprays) -- Environmental aspects KW - WATER chemistry KW - ENVIRONMENTAL aspects N1 - Accession Number: 47851835; Relph, Rachael A. 1 Guasco, Timothy L. 1 Elliott, Ben M. 1 Kamrath, Michael Z. 1 McCoy, Anne B. 2 Steele, Ryan P. 1 Schofield, Daniel P. 3 Jordan, Kenneth D. 3 Viggiano, Albert A. 4 Ferguson, Eldon E. 5 Johnson, Mark A. 1; Email Address: mark.johnson@yale.edu; Affiliation: 1: Department of Chemistry, Yale University, Post Office Box 208107, New Haven, CT 06520, USA 2: Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA 3: Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA 4: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, MA 01731, USA 5: Climate Monitoring and Diagnostics Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO 80305, USA; Source Info: 1/15/2010, Vol. 327 Issue 5963, p308; Subject Term: ATMOSPHERIC chemistry; Subject Term: HYDROGEN bonding; Subject Term: RESEARCH; Subject Term: NITROUS acid; Subject Term: NITRIC oxide; Subject Term: NITROGEN oxides -- Environmental aspects; Subject Term: CHEMICAL reactions; Subject Term: MOLECULAR structure; Subject Term: SOLVATION; Subject Term: AEROSOLS (Sprays) -- Environmental aspects; Subject Term: WATER chemistry; Subject Term: ENVIRONMENTAL aspects; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47851835&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pawlik, Grzegorz AU - Mitus, Antoni C. AU - Mysliwiec, Jaroslaw AU - Miniewicz, Andrzej AU - Grote, James G. T1 - Photochromic dye semi-intercalation into DNA-based polymeric matrix: Computer modeling and experiment JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2010/01/07/ VL - 484 IS - 4-6 M3 - Article SP - 321 EP - 323 SN - 00092614 AB - Abstract: We use the recently formulated hypothesis of semi-intercalation of an azo-dye Disperse Red 1 (DR1) into a biopolymeric material made of deoxyribonucleic acid (DNA) complexed with the cationic surfactant hexadecyltrimethyl-ammonium chloride (CTMA) to model the unique photochromic properties of the DR1:DNA–CTMA system. Kinetic Monte Carlo simulations accurately reproduce the main experimental results of laser dynamic inscription of diffraction gratings in this photochromic material: short response time, low diffraction efficiency, single-exponential kinetics and flat wavelength dependence. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOCHROMIC materials KW - CLATHRATE compounds KW - AZO compounds KW - ORGANIC dyes & pigments KW - BIOPOLYMERS KW - DNA KW - SURFACE active agents KW - CHEMICAL systems KW - MONTE Carlo method N1 - Accession Number: 47151480; Pawlik, Grzegorz 1 Mitus, Antoni C. 1; Email Address: antoni.mitus@pwr.wroc.pl Mysliwiec, Jaroslaw 2 Miniewicz, Andrzej 2 Grote, James G. 3; Affiliation: 1: Institute of Physics, Wroclaw University of Technology, 50-370 Wroclaw, Poland 2: Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, 50-370 Wroclaw, Poland 3: Materials and Manufacturing Directorate, US Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7707, USA; Source Info: Jan2010, Vol. 484 Issue 4-6, p321; Subject Term: PHOTOCHROMIC materials; Subject Term: CLATHRATE compounds; Subject Term: AZO compounds; Subject Term: ORGANIC dyes & pigments; Subject Term: BIOPOLYMERS; Subject Term: DNA; Subject Term: SURFACE active agents; Subject Term: CHEMICAL systems; Subject Term: MONTE Carlo method; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; NAICS/Industry Codes: 325130 Synthetic Dye and Pigment Manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.cplett.2009.11.071 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47151480&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ruscio, Bruce A. AU - Jones, Bruce H. AU - Bullock, Steven H. AU - Burnham, Bruce R. AU - Canham-Chervak, Michelle AU - Rennix, Christopher P. AU - Wells, Timothy S. AU - Smith, Jack W. T1 - A Process to Identify Military Injury Prevention Priorities Based on Injury Type and Limited Duty Days JO - American Journal of Preventive Medicine JF - American Journal of Preventive Medicine Y1 - 2010/01/02/Jan2010 Supplement VL - 38 M3 - Article SP - S19 EP - S33 SN - 07493797 AB - Background: Injuries, one of the leading public health problems in an otherwise healthy military population, affect operational readiness, increase healthcare costs, and result in disabilities and fatalities. This paper describes a systematic, data-driven, injury prevention–decision making process to rank potential injury prevention targets. Methods: Medical surveillance and safety report data on injuries for 2004 were reviewed. Nonfatal injury diagnoses (ICD-9-CM codes) obtained from the Defense Medical Surveillance System were ranked according to incident visit frequency and estimated limited duty days. Data on the top five injury types resulting in the greatest estimated limited duty days were matched with hospitalization and Service Safety Centers'' accident investigation data to identify leading causes. Experts scored and ranked the causes using predetermined criteria that considered the importance of the problem, preventability, feasibility, timeliness of intervention establishment/results, and ability to evaluate. Department of Defense (DoD) and Service-specific injury prevention priorities were identified. Results: Unintentional injuries lead all other medical conditions for number of medical encounters, individuals affected, and hospital bed days. The top ten injuries resulted in an estimated 25 million days of limited duty. Injury-related musculoskeletal conditions were a leading contributor to days of limited duty. Sports and physical training were the leading cause, followed by falls. Conclusions: A systematic approach to injury prevention–decision making supports the DoD''s goal of ensuring a healthy, fit force. The methodology described here advances this capability. Immediate follow-up efforts should employ both medical and safety data sets to identify and monitor injury prevention priorities. [Copyright &y& Elsevier] AB - Copyright of American Journal of Preventive Medicine is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WOUNDS & injuries -- Prevention KW - MILITARY personnel -- Wounds & injuries KW - MEDICAL care costs KW - DECISION making in clinical medicine KW - PUBLIC health surveillance KW - DIAGNOSTIC imaging KW - HOSPITAL care KW - MUSCULOSKELETAL system -- Wounds & injuries KW - FOLLOW-up studies (Medicine) N1 - Accession Number: 47355187; Ruscio, Bruce A. 1; Email Address: Bruce.ruscio@novartis.com Jones, Bruce H. 2 Bullock, Steven H. 3 Burnham, Bruce R. 4 Canham-Chervak, Michelle 2 Rennix, Christopher P. 5 Wells, Timothy S. 6 Smith, Jack W. 7; Affiliation: 1: Novartis Vaccines and Diagnostics, Washington, DC 2: U.S. Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, Maryland 3: Injury Prevention Program, and Health Promotion Policy Program, Aberdeen Proving Ground, Maryland 4: Headquarters, Air Force Safety Center, Research and Epidemiology Branch, Kirtland Air Force Base, New Mexico 5: EpiData Center, Navy and Marine Corps Public Health Center, Portsmouth, Virginia 6: Biomechanics Branch, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 7: Clinical and Program Policy, Office of the Assistant Secretary of Defense for Health Affairs, Falls Church, Virginia; Source Info: Jan2010 Supplement, Vol. 38, pS19; Subject Term: WOUNDS & injuries -- Prevention; Subject Term: MILITARY personnel -- Wounds & injuries; Subject Term: MEDICAL care costs; Subject Term: DECISION making in clinical medicine; Subject Term: PUBLIC health surveillance; Subject Term: DIAGNOSTIC imaging; Subject Term: HOSPITAL care; Subject Term: MUSCULOSKELETAL system -- Wounds & injuries; Subject Term: FOLLOW-up studies (Medicine); NAICS/Industry Codes: 621512 Diagnostic Imaging Centers; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 0p; Document Type: Article L3 - 10.1016/j.amepre.2009.10.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47355187&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Samuels, Steven M. AU - Foster, Craig A. AU - Lindsay, Douglas R. T1 - Freefall, Self-Efficacy, and Leading in Dangerous Contexts. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2010/01/02/Jan2010 Supplement 1 VL - 22 M3 - Article SP - 117 EP - 136 PB - Taylor & Francis Ltd SN - 08995605 AB - We examined whether completion of a military Freefall parachuting program enhanced self-efficacy in the domains of leader self-control and leader assertiveness. The Freefall program was particularly suited for self-efficacy development because Freefall required personal mastery to overcome a substantial perceived risk. We surveyed participants at the beginning and end of the Freefall program. We also distributed a subsequent survey nine months later that allowed us to compare leader self-efficacy as a function of participation in Freefall and a similarly risky but less mastery-oriented Soaring program (i.e., flying gliders). The obtained results indicated that successful performance in Freefall, but not in Soaring, contributed to leader self-control and leader assertiveness. The implications for leading in dangerous and traditional contexts are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEADERSHIP KW - SELF-efficacy KW - SELF-control KW - DISCIPLINE KW - CONTROL (Psychology) N1 - Accession Number: 49086260; Samuels, Steven M. 1; Email Address: Steven.Samuels@usafa.edu Foster, Craig A. 1 Lindsay, Douglas R. 1; Affiliation: 1: Department of Behavioral Sciences and Leadership, United States Air Force Academy, Colorado.; Source Info: Jan2010 Supplement 1, Vol. 22, p117; Subject Term: LEADERSHIP; Subject Term: SELF-efficacy; Subject Term: SELF-control; Subject Term: DISCIPLINE; Subject Term: CONTROL (Psychology); Number of Pages: 20p; Illustrations: 3 Charts; Document Type: Article L3 - 10.1080/08995601003644379 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49086260&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bridges, Elizabeth T1 - Facilitation of Evidence-Based Nursing Practice During Military Operations. JO - Nursing Research JF - Nursing Research Y1 - 2010/01/02/Jan/Feb2010 Supplement VL - 59 M3 - Article SP - S75 EP - S79 SN - 00296562 AB - The translation of research to clinical practice and health decision making is challenging. Under military operational conditions (e.g., the provision of care in the field), translation may be even more challenging. Two barriers that limit the use of evidence to guide practice, which are particularly germane under operational conditions, are conflicting or absent research results specific to the population of interest and relevant studies not being compiled in one place (Titler, 2007; Titler & Everett, 2001). The Agency for Healthcare Research and Quality Knowledge Transfer Framework (Nieva et al., 2005) provides a structure to facilitate evidence translation and to overcome these barriers. This article summarizes one aspect of a program of operational nursing research sup- ported by the TriService Nursing Research Program, which exemplifies the three stages of the Agency for Healthcare Research and Quality framework. [ABSTRACT FROM AUTHOR] AB - Copyright of Nursing Research is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EVIDENCE-based nursing KW - DECISION making in nursing KW - MILITARY nursing KW - NURSING research KW - KNOWLEDGE transfer (Communication) KW - health decision making KW - knowledge transfer KW - military nursing research KW - research translation to clinical practice N1 - Accession Number: 47761433; Bridges, Elizabeth 1,2,3,4; Email Address: ebridges@u.washington.edu; Affiliation: 1: Colonel, 60th Medical Group, United States Air Force Reserve Nurse Corps, Travis Air Force Base, California 2: Director, Deployed Combat Casualty Research Team, USFOR-A (Afghanistan) 3: Associate Professor, Biobehavioral Nursing and Health Systems, School of Nursing, University of Washington, Seattle 4: Clinical Nurse Researcher, University of Washington Medical Center, Seattle; Source Info: Jan/Feb2010 Supplement, Vol. 59, pS75; Subject Term: EVIDENCE-based nursing; Subject Term: DECISION making in nursing; Subject Term: MILITARY nursing; Subject Term: NURSING research; Subject Term: KNOWLEDGE transfer (Communication); Author-Supplied Keyword: health decision making; Author-Supplied Keyword: knowledge transfer; Author-Supplied Keyword: military nursing research; Author-Supplied Keyword: research translation to clinical practice; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47761433&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Soldovieri, Francesco AU - Deming, Ross AU - Pierri, Rocco T1 - An improved version of the relative entropy minimization approach for the phase retrieval problem JO - AEU: International Journal of Electronics & Communications JF - AEU: International Journal of Electronics & Communications Y1 - 2010/01// VL - 64 IS - 1 M3 - Article SP - 56 EP - 65 SN - 14348411 AB - Abstract: This paper presents an investigation on the reliability of an iterative phase retrieval (PR) approach from intensity-only measurements on multiple planes. PR tends to converge, regardless of the particular method chosen, in the ideal case where intensity is negligible outside the scan plane field-of-view. However, convergence may be adversely affected when the intensity distribution extends beyond the field-of-view. In this paper, a remedy is proposed for data truncation, and is tested on a recently introduced PR method [R.W. Deming, Phase retrieval from intensity-only data by relative entropy minimization, J Opt Soc Am A 24 (2007) 3666–3679]. This remedy incorporates a priori knowledge about the extent of the source under test by way of constraints in the plane-wave spectrum (PWS) of the unknown complex wave field. In addition, the adopted representation permits control of the path to convergence using a gradual increase in the number of unknown model parameters during the PR iterations. Reconstruction results show the feasibility and reliability of the proposed solution strategy. [Copyright &y& Elsevier] AB - Copyright of AEU: International Journal of Electronics & Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENTROPY KW - INFORMATION retrieval KW - RELIABILITY (Engineering) KW - ITERATIVE methods (Mathematics) KW - DISTRIBUTION (Probability theory) KW - STOCHASTIC convergence KW - FEASIBILITY studies KW - Antenna diagnostics KW - Entropy minimization KW - Local minima KW - Non linear inverse problem KW - Phase retrieval N1 - Accession Number: 45557637; Soldovieri, Francesco 1; Email Address: soldovieri.f@irea.cnr.it Deming, Ross 2 Pierri, Rocco 3; Affiliation: 1: Istituto per il Rilevamento Elettromagnetico dell’Ambiente (IREA-CNR), Via Diocleziano 328, 80124 Napoli, Italy 2: General Dynamics IT, Inc. Air Force Research Laboratory, Sensors Directorate/RYHE, 80 Scott Drive, Hanscom AFB, MA 01731, USA 3: Dipartimento di Ingegneria dell’Informazione, Seconda Universita’ di Napoli Via Roma 29, 81031 Aversa, Italy; Source Info: Jan2010, Vol. 64 Issue 1, p56; Subject Term: ENTROPY; Subject Term: INFORMATION retrieval; Subject Term: RELIABILITY (Engineering); Subject Term: ITERATIVE methods (Mathematics); Subject Term: DISTRIBUTION (Probability theory); Subject Term: STOCHASTIC convergence; Subject Term: FEASIBILITY studies; Author-Supplied Keyword: Antenna diagnostics; Author-Supplied Keyword: Entropy minimization; Author-Supplied Keyword: Local minima; Author-Supplied Keyword: Non linear inverse problem; Author-Supplied Keyword: Phase retrieval; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.aeue.2008.11.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45557637&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Spottswood, S. Michael AU - Hollkamp, Joseph J. AU - Eason, Thomas G. T1 - Reduced-Order Models for a Shallow Curved Beam Under Combined Loading. JO - AIAA Journal JF - AIAA Journal Y1 - 2010/01// VL - 48 IS - 1 M3 - Article SP - 47 EP - 55 SN - 00011452 AB - Future U.S. Air Force vehicles require structures that can withstand extreme combined environments. Examples include vehicles exposed to launch, sustained hypersonic velocities, reentry, and stealthy aircraft with buried engines and ducted exhaust. Two of the many conditions that a structure in these environments will experience are elevated temperatures and high acoustic loading. Computational methods are needed to rapidly explore the design space for extreme environment structures. There has been a significant amount of work toward developing reduced-order modeling to address the issue of sonic fatigue. These methods have been demonstrated to be useful for predicting the geometric nonlinear response of aircraft structures to stochastic loading. Recent work also demonstrates that these methods are able to predict the response of planar structures in these combined environments. The present study demonstrates that the implicit condensation reduced-order modeling method can also be extended to curved structures experiencing combined thermal-acoustic loading with changing thermal conditions. Successful displacement and strain comparisons for a curved beam structure are made between results from a commercial finite element code and reduced-order models, using a single random pressure load (162 dB) and varying temperature cases. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL models KW - HYPERSONIC aerodynamics KW - STEALTH aircraft KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 47935744; Spottswood, S. Michael 1 Hollkamp, Joseph J. 1 Eason, Thomas G. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jan2010, Vol. 48 Issue 1, p47; Subject Term: MATHEMATICAL models; Subject Term: HYPERSONIC aerodynamics; Subject Term: STEALTH aircraft; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 9p; Illustrations: 13 Graphs; Document Type: Article L3 - 10.2514/1.38707 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47935744&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Scott-Emuakpor, Onome AU - George, Tommy AU - Cross, Charles AU - Shen, M. -H. Herman T1 - Multi-Axial Fatigue-Life Prediction via a Strain-Energy Method. JO - AIAA Journal JF - AIAA Journal Y1 - 2010/01// VL - 48 IS - 1 M3 - Article SP - 63 EP - 72 SN - 00011452 AB - A strain-energy-based method has been developed to predict the fatigue life of a structure subjected to either shear or biaxial bending loads at various stress ratios. The framework for this method is an advancement of previously conducted research that validates a uniaxial energy-based fatigue-life-prediction approach. The understanding behind the approach states that the total strain energy dissipated during a monotonic fracture and a cyclic process is the same material property, where the experimental strain-energy density of each can be determined by measuring the area underneath the monotonic true stress-strain curve and the area within a hysteresis loop, respectively. The developed framework consists of two elements: a life-prediction method that calculates shear fatigue-life cycles and a multi-axial life-prediction method capable of calculating biaxial fatigue-life cycles. A comparison was made between the two framework elements and experimental results from three different aluminum alloys. The comparison shows encouraging agreement, thus providing credence in the prediction capabilities of the proposed energy-based framework. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Fatigue KW - STRAINS & stresses (Mechanics) KW - ALLOYS -- Fatigue KW - ALUMINUM alloys KW - STRUCTURAL analysis (Engineering) N1 - Accession Number: 47935746; Scott-Emuakpor, Onome 1; Email Address: Onome.Scott-Emuakpor@wpafb.af.mil George, Tommy 1 Cross, Charles 1 Shen, M. -H. Herman 2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: The Ohio State University, Columbus, Ohio 43210; Source Info: Jan2010, Vol. 48 Issue 1, p63; Subject Term: MATERIALS -- Fatigue; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ALLOYS -- Fatigue; Subject Term: ALUMINUM alloys; Subject Term: STRUCTURAL analysis (Engineering); NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 10p; Illustrations: 3 Black and White Photographs, 4 Diagrams, 1 Chart, 16 Graphs; Document Type: Article L3 - 10.2514/1.39296 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47935746&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, S. AU - Goettke, M. K. AU - Loth, E. AU - Tinapple, J. AU - Benek, John T1 - Microramps Upstream of an Oblique-Shock/Boundary-Layer Interaction. JO - AIAA Journal JF - AIAA Journal Y1 - 2010/01// VL - 48 IS - 1 M3 - Article SP - 104 EP - 118 SN - 00011452 AB - To examine the potential of micro vortex generators for shock/boundary-layer interaction control, a detailed experimental and computational study in a supersonic boundary layer at M = 3.0 was undertaken. The experiments employed a flat-plate boundary layer with an impinging oblique shock with downstream total-pressure measurements. The moderate Reynolds number of 3800 allowed the computations to use monotone-integrated large eddy simulations. The monotone-integrated large eddy simulations predictions indicated that the shock changes the structure of the turbulent eddies and the primary vortices generated from the microramp. Furthermore, they generally reproduced the experimentally obtained mean velocity profiles, unlike similarly resolved Reynolds-averaged Navier-Stokes computations. The experiments and monotone-integrated large eddy simulations results indicate that the microramps, for which the height is h ≈ 0.5δ, can significantly reduce boundary-layer thickness and improve downstream boundary-layer health as measured by the incompressible shape function H. Regions directly behind the ramp centerline tended to have increased boundary-layer thickness, indicating the significant three-dimensionality of the flowfield. Compared with baseline sizes, smaller microramps yielded improved total-pressure recovery. Moving the smaller ramps closer to the shock interaction also reduced the displacement thickness and the separated area. This effect is attributed to decreased wave drag and the closer proximity of the vortex pairs to the wall. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VORTEX generators KW - BOUNDARY layer control KW - REYNOLDS number KW - EDDY currents (Electric) KW - AERODYNAMICS N1 - Accession Number: 47935750; Lee, S. 1 Goettke, M. K. 2 Loth, E. 1 Tinapple, J. 2 Benek, John 2; Affiliation: 1: University of lllinois, Urbana-Champaign, Urbana, Illinois 61801 2: U.S. Air Force Research Laboratory, Dayton, Ohio 45433; Source Info: Jan2010, Vol. 48 Issue 1, p104; Subject Term: VORTEX generators; Subject Term: BOUNDARY layer control; Subject Term: REYNOLDS number; Subject Term: EDDY currents (Electric); Subject Term: AERODYNAMICS; Number of Pages: 15p; Illustrations: 1 Black and White Photograph, 8 Diagrams, 2 Charts, 8 Graphs; Document Type: Article L3 - 10.2514/1.41776 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47935750&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Briones, Alejandro M. AU - Zelina, Joseph AU - Katta, Viswanath R. T1 - Flame Stabilization in Small Cavities. JO - AIAA Journal JF - AIAA Journal Y1 - 2010/01// VL - 48 IS - 1 M3 - Article SP - 224 EP - 235 SN - 00011452 AB - This research is motivated by the necessity to improve the performance of ultracompact combustors, which requires flame stabilization in small cavities. An extensive computational investigation on the characteristics of cavity-stabilized flames is presented. A high-fidelity, time-accurate, implicit algorithm that uses a global chemical mechanism for JP8-air combustion and includes detailed thermodynamic and transport properties as well as radiation effects is used for simulation. Calculations are performed using both direct numerical simulation and standard k-ε Reynolds-averaged Navier--Stokes model. The flow unsteadiness is first examined in large axisymmetric and small planar cavities with nonreactive flows. As with previous investigations on axisymmetric cavities, multiple flow regimes were obtained by varying cavity length (x/Do): wake backflow regime, unsteady cavity vortex regime, steady cavity vortex regime, and compressed cavity vortex regime. However, planar cavities only exhibit steady cavity vortex and compressed cavity vortex regimes. Two opposed nonaligned air jets were positioned in this planar cavity: the outermost air jet in coflow with the mainstream flow (i.e., normal injection). The fuel jet was injected either in coflow, crossflow, or counterflow with respect to the mainstream flow. Flow unsteadiness was observed to be relatively small for coflow- and crossflow-fuel-jet injection. By reversing the air jet positions (i.e., reverse injection), the flow unsteadiness is promoted regardless of fuel jet positioning. Finally, the effect of combustion and cavity equivalence ratio (øCAV) on flame unsteadiness is addressed. With normal injection (reverse injection), low and high øCAV leads to low (high) and high (low) flame unsteadiness, respectively. Based on these results recommendations are provided to designers/engineers to reduce flame unsteadiness in these cavities. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLAME KW - COMBUSTION KW - ALGORITHMS KW - JET planes -- Fuel KW - FIRE N1 - Accession Number: 47935761; Briones, Alejandro M. 1 Zelina, Joseph 2 Katta, Viswanath R. 3; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 3: Innovative Scientific Solutions, Inc., Dayton, Ohio 45440; Source Info: Jan2010, Vol. 48 Issue 1, p224; Subject Term: FLAME; Subject Term: COMBUSTION; Subject Term: ALGORITHMS; Subject Term: JET planes -- Fuel; Subject Term: FIRE; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 12p; Illustrations: 3 Diagrams, 1 Chart, 12 Graphs; Document Type: Article L3 - 10.2514/1.44162 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47935761&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hassan, Anthony M. AU - Dellow, Donald A. AU - Jackson, Robert J. T1 - The AACC Leadership Competencies: Parallel Views from the Top. JO - Community College Journal of Research & Practice JF - Community College Journal of Research & Practice Y1 - 2010/01//Jan/Feb2010 VL - 34 IS - 1/2 M3 - Article SP - 180 EP - 198 SN - 10668926 AB - This study examined how a group of community college presidents and board of trustee chairpersons from New York and Florida viewed the competencies, characteristics, and professional skills identified by the American Association of Community Colleges (AACC) (2005) as important for effective community college leadership. In addition, the presidents were asked to identify those activities and experiences that they found helpful in developing the AACC leadership competencies. The results from this study suggest that community college presidents and board of trustee chairpersons converge in their views of the AACC leadership competencies. Their views reveal high expectations for community college presidents and highlight experiences related to the development of these competencies. Practice implications for hiring and developing community college leaders are offered. [ABSTRACT FROM AUTHOR] AB - Copyright of Community College Journal of Research & Practice is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDUCATIONAL leadership KW - CORE competencies KW - COMMUNITY college presidents KW - COMMUNITY college trustees KW - COMMUNITY colleges KW - UNITED States KW - NEW York (State) KW - FLORIDA KW - AMERICAN Association of Community Colleges N1 - Accession Number: 47132456; Hassan, Anthony M. 1; Email Address: hassana@usc.edu Dellow, Donald A. 2 Jackson, Robert J. 3; Affiliation: 1: School of Social Work, University of Southern California, Los Angeles, California, USA 2: Adult, Career, and Higher Education, University of South Florida, Tampa, Florida, USA 3: United States Air Force Academy, Colorado Springs, Colorado, USA; Source Info: Jan/Feb2010, Vol. 34 Issue 1/2, p180; Subject Term: EDUCATIONAL leadership; Subject Term: CORE competencies; Subject Term: COMMUNITY college presidents; Subject Term: COMMUNITY college trustees; Subject Term: COMMUNITY colleges; Subject Term: UNITED States; Subject Term: NEW York (State); Subject Term: FLORIDA; Company/Entity: AMERICAN Association of Community Colleges; Number of Pages: 19p; Illustrations: 3 Charts; Document Type: Article L3 - 10.1080/10668920903388172 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47132456&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McCabe, JoAnn AU - Wissler, John T1 - A TIME STUDY OF SCIENTISTS & ENGINEERS (S&Es) IN THE AIR VEHICLES DIRECTORATE. JO - Defense AR Journal JF - Defense AR Journal Y1 - 2010/01// VL - 17 IS - 1 M3 - Article SP - 127 EP - 140 SN - 15536408 AB - The article discusses a web-based time study of how scientists and engineers at the Air Force Research Laboratory (AFRL) in the U.S. spend their time on technical compared to non-technical duties. The study was aimed at getting the value and non-added value work hours in a government laboratory to increase productivity. Also included are insights on increasing the technical and value-added time of scientists and engineers to increase productivity. KW - TIME KW - SCIENTISTS KW - ENGINEERS KW - LABOR productivity KW - UNITED States KW - Air Force Research Laboratory (AFRL) Research KW - Air Force Research Laboratory Time Study KW - How Scientists and Engineers Spend Their Time KW - Research Day KW - Technology-Focused Research Organizations KW - Time Study of Scientists and Engineers KW - Value and Non-Value Added Work in a Government Laboratory KW - AIR Force Research Laboratory (Edwards Air Force Base, Calif.) N1 - Accession Number: 48498451; McCabe, JoAnn 1; Email Address: joann.mccabe@wpafb.af.mil Wissler, John 2,3; Email Address: john.wissler@wpafb.af.mil; Affiliation: 1: Corporate development officer, Air Vehicles Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 2: Director, Air Vehicles Directorate, Air Force Research Laboratory 3: Commander, Wright Research Site; Source Info: Jan2010, Vol. 17 Issue 1, p127; Subject Term: TIME; Subject Term: SCIENTISTS; Subject Term: ENGINEERS; Subject Term: LABOR productivity; Subject Term: UNITED States; Author-Supplied Keyword: Air Force Research Laboratory (AFRL) Research; Author-Supplied Keyword: Air Force Research Laboratory Time Study; Author-Supplied Keyword: How Scientists and Engineers Spend Their Time; Author-Supplied Keyword: Research Day; Author-Supplied Keyword: Technology-Focused Research Organizations; Author-Supplied Keyword: Time Study of Scientists and Engineers; Author-Supplied Keyword: Value and Non-Value Added Work in a Government Laboratory; Company/Entity: AIR Force Research Laboratory (Edwards Air Force Base, Calif.); Number of Pages: 13p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48498451&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Selmic, Rastko R. AU - Mitra, Atindra AU - Challa, Shravan AU - Simicevic, Neven T1 - Ultra-Wideband Signal Propagation Experiments in Liquid Media. JO - IEEE Transactions on Instrumentation & Measurement JF - IEEE Transactions on Instrumentation & Measurement Y1 - 2010/01// VL - 59 IS - 1 M3 - Article SP - 215 EP - 220 SN - 00189456 AB - Ultra-wideband (UWB) signals exhibit different characteristics upon propagation through matter compared with narrow-band signals. The latter keeps a sinusoidal shape during different forms of signal propagation. The behavior of narrow- band signals does not apply to UWB signals in many cases. Presently, the possibilities for development of UWB signaling technology remain largely unexplored. Few applications have been developed due to strict regulations by the Federal Communications Commission (FCC). In this paper, we describe a series of experiments that have been carried out to determine the behavior of UWB signals and their properties. A transverse electromagnetic (TEM) horn antenna has been made for radiating UWB signals. A procedure for propagating UWB signals through a liquid medium of given salt concentration has been demonstrated, providing a basis for studying UWB signal propagation in biological matter. A new pulsewidth definition was adopted, which is suitable for propagated UWB signals. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Instrumentation & Measurement is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRA-wideband devices KW - ELECTROMAGNETIC devices KW - SIGNALS & signaling KW - UNITED States KW - Liquid medium propagation KW - signal propagation KW - ultra-wideband (UWB) KW - UWB pulsewidth KW - FEDERAL Communications Bar Association (U.S.) KW - UNITED States. Defense Advanced Research Projects Agency N1 - Accession Number: 47838368; Selmic, Rastko R. 1; Email Address: rselmic@latech.edu Mitra, Atindra 2 Challa, Shravan 1 Simicevic, Neven 3; Affiliation: 1: Department of Electrical Engineering, College of Engineering and Science, Louisiana Tech University, Ruston, LA 71272 USA 2: Air Force Research Laboratory, RF Sensor Technology Division, Wright-Patterson AFB, OH 45433 USA 3: Department of Physics, College of Engineering and Science, Louisiana Tech University, Ruston, LA 71272 USA; Source Info: Jan2010, Vol. 59 Issue 1, p215; Subject Term: ULTRA-wideband devices; Subject Term: ELECTROMAGNETIC devices; Subject Term: SIGNALS & signaling; Subject Term: UNITED States; Author-Supplied Keyword: Liquid medium propagation; Author-Supplied Keyword: signal propagation; Author-Supplied Keyword: ultra-wideband (UWB); Author-Supplied Keyword: UWB pulsewidth; Company/Entity: FEDERAL Communications Bar Association (U.S.) Company/Entity: UNITED States. Defense Advanced Research Projects Agency; Number of Pages: 6p; Illustrations: 5 Diagrams, 7 Graphs; Document Type: Article L3 - 10.1109/TIM.2009.2022452 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47838368&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parker, David R. AU - Gustafson, Steven C. AU - Oxley, Mark E. AU - Ross, Timothy D. T1 - Development of a Bayesian Framework for Determining Uncertainty in' Receiver Operating Characteristic Curve Estimates. JO - IEEE Transactions on Knowledge & Data Engineering JF - IEEE Transactions on Knowledge & Data Engineering Y1 - 2010/01// VL - 22 IS - 1 M3 - Article SP - 31 EP - 45 SN - 10414347 AB - This research uses a Bayesian framework to develop probability densities for the receiver operating characteristic (ROC) curve. The ROC curve is a discrimination metric that may be used to quantify how well a detection system classifies targets and nontargets. The degree of uncertainty in ROC curve formulation is a concern that previous research has not adequately addressed. This research formulates a probability density for the ROC curve and characterizes its uncertainty using confidence bands. Methods for the generation and characterization of the probability densities of the ROC curve are specified and demonstrated, where the initial analysis employs beta densities to model target and nontarget samples of detection system output. For given target and nontarget data, given functional forms of the data densities (such as beta density forms) and given prior densities of the form parameters, the methods developed here provide exact performance metric probability densities. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Knowledge & Data Engineering is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RECEIVER operating characteristic curves KW - SIGNAL detection KW - METRIC projections KW - PERFORMANCE evaluation KW - BAYESIAN field theory KW - MANAGEMENT science KW - Performance evaluation KW - performance metrics KW - receiver operating characteristic KW - ROC curves KW - target detection KW - uncertainty estimation N1 - Accession Number: 47911611; Parker, David R. 1; Email Address: davidparker@ieee.org Gustafson, Steven C. 2; Email Address: steven.gustafson@afit.edu Oxley, Mark E. 2; Email Address: mark.oxley@afit.edu Ross, Timothy D. 3; Email Address: timothy.ross@izvpajb.af.mil; Affiliation: 1: Pacific Air Forces, PSC 3 Box 8097, APO AP 96266 2: Department of Electrical and Computer Engineering, Air Force Institute of Technology, AFIT/ENG, 2950 Hobson Way, WPAFB, OH 45433 3: Air Force Research Laboratory Sensors Directorate, AFRL COMPASE Center, 2241 Avionics Circle, WPAFB, OH 45433; Source Info: Jan2010, Vol. 22 Issue 1, p31; Subject Term: RECEIVER operating characteristic curves; Subject Term: SIGNAL detection; Subject Term: METRIC projections; Subject Term: PERFORMANCE evaluation; Subject Term: BAYESIAN field theory; Subject Term: MANAGEMENT science; Author-Supplied Keyword: Performance evaluation; Author-Supplied Keyword: performance metrics; Author-Supplied Keyword: receiver operating characteristic; Author-Supplied Keyword: ROC curves; Author-Supplied Keyword: target detection; Author-Supplied Keyword: uncertainty estimation; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; Number of Pages: 15p; Document Type: Article L3 - 10.1109/TKDE.2009.50 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47911611&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pu Wang AU - Hongbin Li AU - Himed, Braham T1 - A New Parametric GLRT for Multichannel Adaptive Signal Detection. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing Y1 - 2010/01// VL - 58 IS - 1 M3 - Article SP - 317 EP - 325 SN - 1053587X AB - A parametric generalized likelihood ratio test (GLRT) for multichannel signal detection in spatially and temporally colored disturbance was recently introduced by modeling the disturbance as a multichannel autoregressive (AR) process. The detector, however, involves a highly nonlinear maximum likelihood estimation procedure, which was solved via a two-dimensional iterative search method initialized by a suboptimal estimator. In this paper, we present a simplified GLRT along with a new estimator for the problem. Both the estimator and the GLRT are derived in closed form at considerably lower complexity. With adequate training data, the new GLRT achieves a similar detection performance as the original one. However, for the more interesting case of limited training, the original GLRT may become inferior due to poor initialization. Because of its simpler form, the new GLRT also offers additional insight into the parametric multichannel signal detection problem. The performance of the proposed detector is assessed using both a simulated dataset, which was generated using multichannel AR models, and the KASSPER dataset, a widely used dataset with challenging heterogeneous effects found in real-world environments. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIGNAL detection KW - ADAPTIVE signal processing KW - PARAMETRIC devices KW - DETECTORS KW - COMPUTATIONAL complexity KW - Generalized likelihood ratio test KW - maximum likelihood estimation KW - parametric detection KW - space-time adaptive signal processing N1 - Accession Number: 47843653; Pu Wang 1; Email Address: pwang4@stevens.edu Hongbin Li 1; Email Address: Hongbin.Li@stevens.edu Himed, Braham 2; Email Address: Braham.Himed@wpafb.af.mil; Affiliation: 1: Department of Electrical and Computer Engineering, Stevens Institute of Technology, Hoboken, NJ 07030 USA 2: Radar Signal Processing Technology Branch, Air Force Research Laboratory, Dayton, OH 45433 USA; Source Info: Jan2010, Vol. 58 Issue 1, p317; Subject Term: SIGNAL detection; Subject Term: ADAPTIVE signal processing; Subject Term: PARAMETRIC devices; Subject Term: DETECTORS; Subject Term: COMPUTATIONAL complexity; Author-Supplied Keyword: Generalized likelihood ratio test; Author-Supplied Keyword: maximum likelihood estimation; Author-Supplied Keyword: parametric detection; Author-Supplied Keyword: space-time adaptive signal processing; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TSP.2009.2030835 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47843653&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jenkins, Charles M. AU - Horie, Yasuyuki AU - Wu, Chang-Yu T1 - Particle velocity and structures in blast waves imaged using particle image velocimetry JO - International Journal of Multiphase Flow JF - International Journal of Multiphase Flow Y1 - 2010/01// VL - 36 IS - 1 M3 - Article SP - 88 EP - 91 SN - 03019322 KW - Blast wave particle flow KW - Heterogeneous explosive KW - PIV multiphase flow N1 - Accession Number: 45420949; Jenkins, Charles M. 1,2; Email Address: jenkins@eglin.af.mil Horie, Yasuyuki 1 Wu, Chang-Yu 2; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, USA 2: Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL 32611-6450, USA; Source Info: Jan2010, Vol. 36 Issue 1, p88; Author-Supplied Keyword: Blast wave particle flow; Author-Supplied Keyword: Heterogeneous explosive; Author-Supplied Keyword: PIV multiphase flow; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.ijmultiphaseflow.2009.08.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45420949&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baird III, Leemon C. AU - Schweitzer, Dino AU - Bahn, William L. AU - Sambasivam, Sam T1 - A Novel Visual Cryptography Coding System for Jam Resistant Communication. JO - Issues in Informing Science & Information Technology JF - Issues in Informing Science & Information Technology Y1 - 2010/01// VL - 7 M3 - Article SP - 495 EP - 507 SN - 15475840 AB - A form of visual jam resistant coding is presented. Using Visual BBC, a modified form of BBC (Baird, Bahn, Collins) coding, it is shown that several images can be printed on clear plastic, such that when they are superimposed (i.e., a bitwise OR of the pixels is performed), the resulting image may look random, but the original images can still be recovered without any information about the original pictures and without any secret. BBC is a complex subject to understand, and so Visual BBC aids the teaching of how BBC coding works, by giving students a concrete, physical model. Examples are shown, illustrating that it is possible for legitimate BBC codewords to actually look like recognizable images, rather than just random binary strings. This allows us to superimpose arbitrary pictures and separate them again in linear time without using any keys or channels specific to each picture. This is not possible in any other coding systems, such as error correcting codes, superimposed codes, or steganography systems. In addition, a number of analysis problems are described that can be given to students, which are motivated by the issues arising in Visual BBC, and which further increase student understanding of the system. [ABSTRACT FROM AUTHOR] AB - Copyright of Issues in Informing Science & Information Technology is the property of Informing Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERIMPOSED coding KW - CODING theory KW - TEACHING aids & devices KW - ELECTRONIC data processing KW - CRYPTOGRAPHY KW - BBC KW - coding theory KW - concurrent codes KW - education KW - visual cryptography KW - visualization N1 - Accession Number: 53700234; Baird III, Leemon C. 1; Email Address: Leemon.Baird@usafa.edu Schweitzer, Dino 1; Email Address: dino.schweitzer@usafa.edu Bahn, William L. 1; Email Address: william.bahn@usafa.edu Sambasivam, Sam 2; Email Address: ssambasivam@apu.edu; Affiliation: 1: Academy Center for Cyberspace Research, US Air Force Academy, Colorado Springs, CO, USA 2: Department of Computer Science Azusa Pacific University, Azusa, CA, USA; Source Info: 2010, Vol. 7, p495; Subject Term: SUPERIMPOSED coding; Subject Term: CODING theory; Subject Term: TEACHING aids & devices; Subject Term: ELECTRONIC data processing; Subject Term: CRYPTOGRAPHY; Author-Supplied Keyword: BBC; Author-Supplied Keyword: coding theory; Author-Supplied Keyword: concurrent codes; Author-Supplied Keyword: education; Author-Supplied Keyword: visual cryptography; Author-Supplied Keyword: visualization; NAICS/Industry Codes: 518210 Data Processing, Hosting, and Related Services; Number of Pages: 13p; Illustrations: 1 Black and White Photograph, 8 Illustrations, 2 Diagrams, 3 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53700234&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cizmas, Paul G. A. AU - Gargoloff, Joaquin I. AU - Strganac, Thomas W. AU - Beran, Philip S. T1 - Parallel Multigrid Algorithm for Aeroelasticity Simulations. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2010/01//Jan/Feb2010 VL - 47 IS - 1 M3 - Article SP - 53 EP - 53 SN - 00218669 AB - This paper presents the development of a multigrid parallel algorithm for a nonlinear aeroelastic analysis. The aeroelastic model consists of 1) a nonlinear structural model that captures in-plane, out-of-plane, and torsional couplings; 2) an unsteady viscous aerodynamic model that captures compressible flow effects for transonic flows with shock/boundary-layer interaction; and 3) a solution methodology that assures a tightly coupled solution of the nonlinear structure and the fluid flow, including a consistent geometric interface between the highly deforming structure and the flowfield. A domain-decomposition parallel computation algorithm based on a message-passing interface was developed for the flow solver. A three-level multigrid algorithm was implemented in the flow solver to further reduce the computational time. A grid generation and deformation algorithm was developed concurrently with the flowsolver in order to improve the efficiency of the computation. The grid deformation methodology kept the mesh topology unchanged as the structure deformed. Consequently, it was not necessary for either the parallel computation or the multigrid algorithm to update their communication pointers while the structure deformed. The validation of the numerical solver was done using experimental results of the F-5 wing. The aeroelastic solver was then used to assess the effect of structural nonlinearities on the aeroelastic response of the heavy Goland wing. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - AEROELASTICITY KW - STRUCTURAL frames -- Models KW - NONLINEAR models (Statistics) KW - PLANE geometry KW - COUPLINGS (Gearing) N1 - Accession Number: 48549085; Cizmas, Paul G. A. 1 Gargoloff, Joaquin I. 1 Strganac, Thomas W. 1 Beran, Philip S. 2; Affiliation: 1: Texas A&M University, College Station, Texas 77843-3141 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7531; Source Info: Jan/Feb2010, Vol. 47 Issue 1, p53; Subject Term: ALGORITHMS; Subject Term: AEROELASTICITY; Subject Term: STRUCTURAL frames -- Models; Subject Term: NONLINEAR models (Statistics); Subject Term: PLANE geometry; Subject Term: COUPLINGS (Gearing); NAICS/Industry Codes: 333619 Other engine and power transmission equipment manufacturing; NAICS/Industry Codes: 333613 Mechanical Power Transmission Equipment Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.2514/1.40201 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48549085&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Riemenschneider, L. AU - Woo, M.-H. AU - Wu, C.-Y. AU - Lundgren, D. AU - Wander, J. AU - Lee, J.-H. AU - Li, H.-W. AU - Heimbuch, B. T1 - Characterization of reaerosolization from impingers in an effort to improve airborne virus sampling. JO - Journal of Applied Microbiology JF - Journal of Applied Microbiology Y1 - 2010/01// VL - 108 IS - 1 M3 - Article SP - 315 EP - 324 PB - Wiley-Blackwell SN - 13645072 AB - Aims: To assess the impact of reaerosolization from liquid impingement methods on airborne virus sampling. Methods and Results: An AGI-30 impinger containing particles [MS2 bacteriophage or 30-nm polystyrene latex (PSL)] of known concentration was operated with sterile air. Reaerosolized particles as a function of sampling flow rate and particle concentration in the impinger collection liquid were characterized using a scanning mobility particle sizer. Reaerosolization from the impinger was also compared to that from a BioSampler. Results show that reaerosolization increases as flow rate increases. While the increased particle concentration in the impinger collection liquid leads to an increase in the reaerosolization of PSL particles, it does not necessarily lead to an increase in the reaerosolization of virus particles. Reaerosolization of virus particles begins to decrease as the particle concentration in the impinger collection liquid rises above 106 PFU ml−1. This phenomenon results from aggregation of viral particles at high concentrations. Compared with micron-sized particles, nanosized virus particles are easier to aerosolize because of reduced inertia. Reaerosolization from the BioSampler is demonstrated to be significantly less than that from the impinger. Conclusions: Reaerosolization from impingement sampling methods is a mode of loss in airborne virus sampling, although it is not as significant a limitation as the primary particle size of the aerosol. Utilizing a BioSampler coupled with short sampling periods to prevent high accumulative concentrations can minimize the impact of reaerosolization. Significance and Impact of the Study: This study confirms reaerosolization of virus particles to be a mode of loss in impingement sampling and identifies methods to minimize the loss. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Microbiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VIRUSES KW - SAMPLING (Process) KW - BACTERIOPHAGES KW - POLYSTYRENE KW - LATEX KW - PARTICLES KW - LIQUIDS KW - INERTIA (Mechanics) KW - MICROORGANISMS KW - aggregation KW - impinger KW - reaerosolization KW - sampling KW - virus N1 - Accession Number: 45717768; Riemenschneider, L. 1 Woo, M.-H. 1 Wu, C.-Y. 1; Email Address: cywu@ufl.edu Lundgren, D. 1 Wander, J. 2 Lee, J.-H. 1 Li, H.-W. 1 Heimbuch, B. 2; Affiliation: 1: Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL, USA. 2: Air Force Research Laboratory, Tyndall Air Force Base, FL, USA.; Source Info: Jan2010, Vol. 108 Issue 1, p315; Subject Term: VIRUSES; Subject Term: SAMPLING (Process); Subject Term: BACTERIOPHAGES; Subject Term: POLYSTYRENE; Subject Term: LATEX; Subject Term: PARTICLES; Subject Term: LIQUIDS; Subject Term: INERTIA (Mechanics); Subject Term: MICROORGANISMS; Author-Supplied Keyword: aggregation; Author-Supplied Keyword: impinger; Author-Supplied Keyword: reaerosolization; Author-Supplied Keyword: sampling; Author-Supplied Keyword: virus; NAICS/Industry Codes: 326140 Polystyrene Foam Product Manufacturing; Number of Pages: 10p; Illustrations: 2 Diagrams, 3 Charts, 3 Graphs; Document Type: Article L3 - 10.1111/j.1365-2672.2009.04425.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45717768&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bailey, C. A. AU - Tondiglia, V. P. AU - Natarajan, L. V. AU - Duning, M. M. AU - Bricker, R. L. AU - Sutherland, R. L. AU - White, T. J. AU - Durstock, M. F. AU - Bunning, T. J. T1 - Electromechanical tuning of cholesteric liquid crystals. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2010/01// VL - 107 IS - 1 M3 - Article SP - 013105 EP - 013112 PB - American Institute of Physics SN - 00218979 AB - The electrical tuning of negative dielectric anisotropy (-Δ[variant_greek_epsilon]) cholesteric liquid crystals (CLCs) under the influence of ac and dc electric fields was studied. Unlike (+Δ[variant_greek_epsilon]) CLCs, these materials align their helical axis along the applied electric field, allowing the preservation of the optical band gap. Our results show band gap shifts greater than 20% of the original notch position with little change in the quality of the band gap, including the bandwidth and notch depth. These results can be understood by using an electromechanical model, which shows that the Maxwell’s stresses are sufficiently strong to distort the ITO glass substrates. Simple beam and plate elasticity theory is shown to adequately describe the observed behavior. The electromechanical effect is then used to create CLC cells, which can both red and blue tune. This mechanism may have interesting applications in tunable optical filters, optical pressure/stress sensors, and tunable laser technologies. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - ANISOTROPY KW - ELECTRIC fields KW - SUBSTRATES (Materials science) KW - ELASTICITY N1 - Accession Number: 47587838; Bailey, C. A. 1 Tondiglia, V. P. 2 Natarajan, L. V. 2 Duning, M. M. 1 Bricker, R. L. Sutherland, R. L. 2 White, T. J. 1 Durstock, M. F. 1 Bunning, T. J. 1; Affiliation: 1: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio 45433, 2: Science Applications International Corporation, 4031 Col Glenn Hwy, Dayton, Ohio 45431,; Source Info: Jan2010, Vol. 107 Issue 1, p013105; Subject Term: LIQUID crystals; Subject Term: ANISOTROPY; Subject Term: ELECTRIC fields; Subject Term: SUBSTRATES (Materials science); Subject Term: ELASTICITY; Number of Pages: 8p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1063/1.3270410 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47587838&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Speshock, Janice L. AU - Murdock, Richard C. AU - Braydich-Stolle, Laura K. AU - Schrand, Amanda M. AU - Hussain, Saber M. T1 - Interaction of silver nanoparticles with Tacaribevirus. JO - Journal of Nanobiotechnology JF - Journal of Nanobiotechnology Y1 - 2010/01// VL - 8 M3 - Article SP - 19 EP - 27 SN - 14773155 AB - Background: Silver nanoparticles possess many unique properties that make them attractive for use in biological applications. Recently they received attention when it was shown that 10 nm silver nanoparticles were bactericidal, which is promising in light of the growing number of antibiotic resistant bacteria. An area that has been largely unexplored is the interaction of nanomaterials with viruses and the possible use of silver nanoparticles as an antiviral agent. Results: This research focuses on evaluating the interaction of silver nanoparticles with a New World arenavirus, Tacaribe virus, to determine if they influence viral replication. Surprisingly exposing the virus to silver nanoparticles prior to infection actually facilitated virus uptake into the host cells, but the silver-treated virus had a significant reduction in viral RNA production and progeny virus release, which indicates that silver nanoparticles are capable of inhibiting arenavirus infection in vitro. The inhibition of viral replication must occur during early replication since although pre-infection treatment with silver nanoparticles is very effective, the post-infection addition of silver nanoparticles is only effective if administered within the first 2-4 hours of virus replication. Conclusions: Silver nanoparticles are capable of inhibiting a prototype arenavirus at non-toxic concentrations and effectively inhibit arenavirus replication when administered prior to viral infection or early after initial virus exposure. This suggests that the mode of action of viral neutralization by silver nanoparticles occurs during the early phases of viral replication. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nanobiotechnology is the property of BioMed Central and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - SILVER KW - VIRUS inhibitors KW - VIRUS diseases -- Drug therapy KW - ARENAVIRUS diseases N1 - Accession Number: 54121555; Speshock, Janice L. 1 Murdock, Richard C. 1 Braydich-Stolle, Laura K. 1 Schrand, Amanda M. 1 Hussain, Saber M. 1; Email Address: saber.hussain@wpafb.af.mil; Affiliation: 1: Applied Biotechnology Branch, Human Effectiveness Directorate, 711th Human Performance Wing, U.S. Air Force Research Laboratory, 2729 R Street, Wright-Patterson Air Force Base, OH, 45433-5707, USA.; Source Info: 2010, Vol. 8, p19; Subject Term: NANOPARTICLES; Subject Term: SILVER; Subject Term: VIRUS inhibitors; Subject Term: VIRUS diseases -- Drug therapy; Subject Term: ARENAVIRUS diseases; Number of Pages: 9p; Document Type: Article L3 - 10.1186/1477-3155-8-19 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54121555&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kumar, Jitendra AU - Rodrigues, Stanley J. AU - Kumar, Binod T1 - Interface-mediated electrochemical effects in lithium/polymer-ceramic cells JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2010/01// VL - 195 IS - 1 M3 - Article SP - 327 EP - 334 SN - 03787753 AB - Abstract: The paper presents and discusses a method to achieve beneficial electrochemical effects mediated by interfaces in an ionic conducting polymer matrix. The beneficial effects include enhanced ionic transport, catalysis of anodic oxidation reaction, and stabilization of the lithium-electrolyte interface in lithium-based electrochemical cells. Polyethylene oxide (PEO) doped with LiN(SO2CF2CF3)2 (LiBETI) was chosen as the ion conducting polymer matrix. The polymer-ceramic (PC) composite electrolytes from the PEO:LiBETI-BN and PEO:LiBETI-Li2O systems were optimized to achieve high conductivity, reduce charge-transfer resistance, and stabilize the solid electrolyte interface (SEI) layer at the lithium anode. Both BN and Li2O were effective in enhancing interface-mediated lithium ion transport. The charge-transfer resistance was reduced by orders of magnitude and the long-term stability of the cells was improved remarkably due to the addition of BN and Li2O in the PEO:LiBETI polymer matrix. AC impedance spectroscopy was used to investigate the phenomenon by measuring the time- and temperature-dependent electrical behavior of the aforementioned materials and cells. The interface-mediated effects due to the addition of BN and Li2O dielectrics contributed to the improved cell properties. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERFACES (Physical sciences) KW - ELECTROCHEMICAL analysis KW - POLYMERIC composites KW - CHARGE transfer KW - ELECTROLYTES KW - LITHIUM cells KW - ELECTRON transport KW - OXIDATION KW - Charge-transfer reaction KW - Ionic transport KW - Polymer-ceramic composite KW - Solid electrolyte interface N1 - Accession Number: 44118256; Kumar, Jitendra 1; Email Address: kumarjit@notes.udayton.edu Rodrigues, Stanley J. 2 Kumar, Binod 1; Affiliation: 1: Electrochemical Power Group, Metals & Ceramics Division, University of Dayton Research Institute, Dayton, Ohio 45469-0171, USA 2: Air Force Research Laboratory, Propulsion Directorate, WPAFB, Ohio 45433, USA; Source Info: Jan2010, Vol. 195 Issue 1, p327; Subject Term: INTERFACES (Physical sciences); Subject Term: ELECTROCHEMICAL analysis; Subject Term: POLYMERIC composites; Subject Term: CHARGE transfer; Subject Term: ELECTROLYTES; Subject Term: LITHIUM cells; Subject Term: ELECTRON transport; Subject Term: OXIDATION; Author-Supplied Keyword: Charge-transfer reaction; Author-Supplied Keyword: Ionic transport; Author-Supplied Keyword: Polymer-ceramic composite; Author-Supplied Keyword: Solid electrolyte interface; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jpowsour.2009.06.098 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44118256&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Arciszewski, Tomasz AU - Harrison, Catherine T1 - Successful Civil Engineering Education. JO - Journal of Professional Issues in Engineering Education & Practice JF - Journal of Professional Issues in Engineering Education & Practice Y1 - 2010/01// VL - 136 IS - 1 M3 - Article SP - 1 EP - 8 PB - American Society of Civil Engineers SN - 10523928 AB - The article focuses on the proposed educational paradigm titled the "Successful Civil Engineering Education," based on psychologist Robert J. Sternberg's theory of successful intelligence. It discusses civil engineering education and the need to improve it and provides a conceptual outline of the proposed educational paradigm. It notes that Sternberg believes that successfully intelligent people leverage their strengths and compensate their weaknesses in order to achieve their goals. KW - CIVIL engineering -- Study & teaching KW - PARADIGM (Theory of knowledge) KW - INTELLECT KW - COGNITIVE psychology KW - PSYCHOLOGISTS KW - PSYCHOLOGICAL aspects KW - STERNBERG, Robert J., 1949- N1 - Accession Number: 47085821; Arciszewski, Tomasz 1; Email Address: tarcisze@gmu.edu Harrison, Catherine 2; Email Address: Catherine.Harrison@WPAFB.AF.MIL; Affiliation: 1: Professor, Civil, Environmental, and Infrastructure Engineering Dept., Volgenau School of Information Technology and Engineering, George Mason Univ., Fairfax, VA 22030 2: Chief, Cognitive Neuroscience Section, Air Force Research Laboratory, Dayton, OH 45459; Source Info: Jan2010, Vol. 136 Issue 1, p1; Subject Term: CIVIL engineering -- Study & teaching; Subject Term: PARADIGM (Theory of knowledge); Subject Term: INTELLECT; Subject Term: COGNITIVE psychology; Subject Term: PSYCHOLOGISTS; Subject Term: PSYCHOLOGICAL aspects; People: STERNBERG, Robert J., 1949-; Number of Pages: 8p; Illustrations: 5 Charts; Document Type: Article L3 - 10.1061/(ASCE)EI.1943-5541.12 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47085821&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Skujins, Torstens AU - Cesnik, Carlos E. S. AU - Oppenheimer, Michael W. AU - Doman, David B. T1 - Canard-Elevon Interactions on a Hypersonic Vehicle. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2010/01//Jan/Feb2010 VL - 47 IS - 1 M3 - Article SP - 90 EP - 100 SN - 00224650 AB - Airbreathing hypersonic cruise vehicles are typically characterized by long, slender bodies with highly coupled engines and airframes. For a case in which the engine is underslung (below the center of gravity), a large elevon control surface is typically necessary to trim the vehicle. The elevon is usually placed at the rear of the vehicle to yield a large moment arm. However, the drawback is that the elevons can cause large perturbations in lift and other undesirable effects. Canard control surfaces are placed on the forebody of the vehicle to counteract these effects as well as aid in low-speed handling. This study looks at how the canards affect the flow over the elevon control surfaces and, in turn, the controllability of the vehicle in general. A two-dimensional analytical formulation is developed and compared with both a series approximation solution and a computational fluid dynamics Euler flowfield solution. The effect of the canard on the elevon, measured using the elevon effectiveness ratio, decreased as the distance between the control surfaces increased. In general, higher Mach numbers combined with higher canard deflection angles resulted in a greater effect on the elevon. Adding a thickness correction, as opposed to assuming that the airfoils were flat plates, actually decreased, on average, the accuracy of the model when compared with the computational data. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERSONIC planes KW - AIRBREATHING launch vehicles KW - AERODYNAMICS -- Mathematical models KW - ROCKETS (Aeronautics) -- Canard fins KW - APPROXIMATION theory KW - COMPUTATIONAL fluid dynamics KW - MACH number N1 - Accession Number: 48576582; Skujins, Torstens 1; Email Address: tskujins@umich.edu Cesnik, Carlos E. S. 1; Email Address: cesnik@umich.edu Oppenheimer, Michael W. 2; Email Address: Michael.Oppenheimer@wpafb.af.mil Doman, David B. 2; Email Address: Doman@wpafb.af.mil; Affiliation: 1: University of Michigan, Ann Arbor, Michigan 48109 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jan/Feb2010, Vol. 47 Issue 1, p90; Subject Term: HYPERSONIC planes; Subject Term: AIRBREATHING launch vehicles; Subject Term: AERODYNAMICS -- Mathematical models; Subject Term: ROCKETS (Aeronautics) -- Canard fins; Subject Term: APPROXIMATION theory; Subject Term: COMPUTATIONAL fluid dynamics; Subject Term: MACH number; Number of Pages: 11p; Illustrations: 19 Diagrams, 11 Charts, 9 Graphs; Document Type: Article L3 - 10.2514/1.44743 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48576582&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Drasgow, Fritz AU - Nye, Christopher D. AU - Carretta, Thomas R. AU - Ree, Malcolm James T1 - Factor Structure of the Air Force Officer Qualifying Test Form S: Analysis and Comparison with Previous Forms. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2010/01//Jan-Mar2010 VL - 22 IS - 1 M3 - Article SP - 68 EP - 85 PB - Taylor & Francis Ltd SN - 08995605 AB - Due to its importance for assignment and classification in the U.S. Air Force, the Air Force Officer Qualifying Test (AFOQT) has received a substantial amount of research. Recently, the AFOQT was revised to reduce administrative burden and test-taker fatigue. However, the new version, the AFOQT Form S, was implemented without explicitly examining the latent structure of the exam. The current study examined the factor structure of Form S as well as its measurement equivalence across race- and sex-based groups. Results indicated that a bifactor model with a general intelligence factor and five content-specific factors fit the best. The measurement equivalence of the AFOQT across gender and racial/ethnic groups was also supported. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIR power (Military science) KW - ARMED Forces KW - AIR defenses KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 49086254; Drasgow, Fritz 1; Email Address: fdrasgow@uiuc.edu Nye, Christopher D. 1 Carretta, Thomas R. 2 Ree, Malcolm James 3; Affiliation: 1: University of Illinois at Urbana-Champaign, Champaign, Illinois. 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio. 3: Our Lady of the Lake University, San Antonio, Texas.; Source Info: Jan-Mar2010, Vol. 22 Issue 1, p68; Subject Term: AIR power (Military science); Subject Term: ARMED Forces; Subject Term: AIR defenses; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 18p; Illustrations: 6 Charts; Document Type: Article L3 - 10.1080/08995600903249255 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49086254&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - GROTE, JAMES G. AU - DALTON, LARRY R. AU - SULLIVAN, PHILIP AU - ROBINSON, BRUCE H. AU - EICHINGER, BRUCE AU - JEN, ALEX K.-Y. AU - BENIGHT, STEPHANIE AU - KOSILKIN, ILYA AU - BALE, DENISE H. T1 - Definition of Critical Structure/Function Relationships and Integration Issues for Organic Electro-Optic Materials. JO - Nonlinear Optics, Quantum Optics: Concepts in Modern Optics JF - Nonlinear Optics, Quantum Optics: Concepts in Modern Optics Y1 - 2010/01// VL - 40 IS - 1-4 M3 - Article SP - 15 EP - 26 SN - 15430537 AB - The roles played by various spatially-anisotropic interactions, dielectric permittivity, and optical frequency in determining electro-optic activity in a variety of different types of organic materials is discussed from the perspective of correlated quantum/statistical mechanical methods and measurement techniques for the determination of poling-induced acentric order and molecular first hyperpolarizability. Comparison of experimental and theoretical data suggests that a "first principles" understanding of electro-optic activity in organic materials can be achieved for chromophore/polymer composites; chromophores covalently incorporated into polymers and dendrimers; and for complex binary (and multiple) chromophore-containing organic glasses. Issues associated with integrating organic electro-optic (OEO) materials into all-organic and hybrid OEO/silicon photonic devices are discussed. Conductivity plays a major role in defining the performance of devices and various options for minimizing the undesired effects of conductivity are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Nonlinear Optics, Quantum Optics: Concepts in Modern Optics is the property of Old City Publishing, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROOPTICS -- Materials KW - ELECTROSTATICS KW - MONTE Carlo method KW - DENSITY functionals KW - POLYMERS KW - DENDRIMERS KW - PERMITTIVITY KW - ELECTRIC conductivity KW - conductivity KW - dendrimers KW - dielectric permittivity KW - intermolecular electrostatic interactions KW - molecular first hyperpolarizability KW - Monte Carlo calculations KW - Organic electro-optic materials and devices KW - polymers KW - time-dependent density functional theory N1 - Accession Number: 51080954; GROTE, JAMES G. 1 DALTON, LARRY R. 2; Email Address: dalton@chem.washington.edu SULLIVAN, PHILIP 2 ROBINSON, BRUCE H. 2 EICHINGER, BRUCE 2 JEN, ALEX K.-Y. 2 BENIGHT, STEPHANIE 2 KOSILKIN, ILYA 2 BALE, DENISE H. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RSPS), 3005 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433-7707 2: Department of Chemistry, University of Washington, Seattle, Washington 98195-1700; Source Info: 2010, Vol. 40 Issue 1-4, p15; Subject Term: ELECTROOPTICS -- Materials; Subject Term: ELECTROSTATICS; Subject Term: MONTE Carlo method; Subject Term: DENSITY functionals; Subject Term: POLYMERS; Subject Term: DENDRIMERS; Subject Term: PERMITTIVITY; Subject Term: ELECTRIC conductivity; Author-Supplied Keyword: conductivity; Author-Supplied Keyword: dendrimers; Author-Supplied Keyword: dielectric permittivity; Author-Supplied Keyword: intermolecular electrostatic interactions; Author-Supplied Keyword: molecular first hyperpolarizability; Author-Supplied Keyword: Monte Carlo calculations; Author-Supplied Keyword: Organic electro-optic materials and devices; Author-Supplied Keyword: polymers; Author-Supplied Keyword: time-dependent density functional theory; Number of Pages: 12p; Illustrations: 5 Diagrams, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51080954&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - WENFANG SUN AU - YUNJING LI AU - PRITCHETT, TIMOTHY M. AU - ZHIQIANG JI AU - HALEY, JOY E. T1 - Excited-State Absorption of 4′-(5′″-R-pyrimidyl)-2, 2′:6′, 2″-terpyridyl Platinum(II) Phenylacetylide Complexes. JO - Nonlinear Optics, Quantum Optics: Concepts in Modern Optics JF - Nonlinear Optics, Quantum Optics: Concepts in Modern Optics Y1 - 2010/01// VL - 40 IS - 1-4 M3 - Article SP - 163 EP - 174 SN - 15430537 AB - The singlet excited-state absorption properties of rive 4'-(5"'-R-pyrimidyl)-2, 2':6', 2"-terpyridyl platinum(II) phenylacetylide complexes were investigated using fs pump-probe UV-Vis spectroscopy. These complexes exhibit broad, moderately intense S1-Sn absorption from 500 to 800 nm, which could be attributed to the MLCT state. The S1-Sn absorption band energy is influenced by the substituent on the 5"'-position of the pyrimidyl ring, with an electron-donating substituent increasing the energy and electron-withdrawing substituent decreasing it. The singlet excited-state lifetime deduced from the decay of the fs transient absorption is in the range of 37-139 ps. Open-aperture Z-scan experiments using ns and ps lasers at 532 nm were carried out for all five complexes 1-5 in CH3CN solution, and the wavelength dispersion characteristics of 1 were investigated using ps laser pulses at various wavelengths. Reverse saturable absorption (RSA) is observed in all complexes at 532 nm at both ns and ps pulse widths, and RSA occurs in 1 over the range 500-600 nm at ps pulse widths. By fitting the experimental Z-scan data using a five-level dynamic model, one obtains values for the singlet and tripler excited-state absorption cross-sections (σs and σT, respectively); for 1-5, these vary from (18 ±: 1) x 10-18 cm² to (50 ± 5) x 10-18 cm² for σs and (1l ± 1) x 10-18 cm² to (14 ± 2) x 10-18 cm² for σT at 532 nm, corresponding to ratios σs/σg of 6.5-29.8 and ratios σT/σg of 2.8-11.2. Complexes 1, 2 and 4 exhibit much larger ratios σs/σg than those of 3 and 5. Moreover, in complex 1 the σs/σg ratio shows a sharp rise from 1.9 at 500 nm to 260 at 600 nm. [ABSTRACT FROM AUTHOR] AB - Copyright of Nonlinear Optics, Quantum Optics: Concepts in Modern Optics is the property of Old City Publishing, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXCITED state chemistry KW - PLATINUM KW - LIGHT absorption KW - MULTIPHOTON processes KW - WAVELENGTHS KW - cross section KW - Excited-state absorption KW - ground state absorption KW - platinum complex KW - transient difference absorption KW - Z scan N1 - Accession Number: 51080965; WENFANG SUN 1; Email Address: Wenfang.Sun@ndsu.edu YUNJING LI 1 PRITCHETT, TIMOTHY M. 2 ZHIQIANG JI 1 HALEY, JOY E. 3,4; Affiliation: 1: Department of Chemistry and Molecular Biology, North Dakota State University, Fargo, ND 58108-6050, USA 2: U.S. Army Research Laboratory, AMSRD-SE-EM, 2800 Powder Mill Road, Adelphi, Maryland 20783-1197, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, USA 4: UES, Inc., Dayton, Ohio 45432, USA; Source Info: 2010, Vol. 40 Issue 1-4, p163; Subject Term: EXCITED state chemistry; Subject Term: PLATINUM; Subject Term: LIGHT absorption; Subject Term: MULTIPHOTON processes; Subject Term: WAVELENGTHS; Author-Supplied Keyword: cross section; Author-Supplied Keyword: Excited-state absorption; Author-Supplied Keyword: ground state absorption; Author-Supplied Keyword: platinum complex; Author-Supplied Keyword: transient difference absorption; Author-Supplied Keyword: Z scan; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 12p; Illustrations: 1 Diagram, 3 Charts, 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51080965&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pettit, C.L. AU - Hajj, M.R. AU - Beran, P.S. T1 - A stochastic approach for modeling incident gust effects on flow quantities JO - Probabilistic Engineering Mechanics JF - Probabilistic Engineering Mechanics Y1 - 2010/01// VL - 25 IS - 1 M3 - Article SP - 153 EP - 162 SN - 02668920 AB - Abstract: The uncertainty in gust loads on a rigid, flat-plate airfoil at zero angle-of-attack due to imprecise knowledge of the gust parameters is quantified. The loads are computed using the unsteady vortex lattice model, which includes temporal variations in wake vorticity and the associated downwash on the airfoil. The non-intrusive formulation of the polynomial chaos expansion in terms of the multivariate Hermite polynomials is employed to quantify the uncertainty in the predicted unsteady lift. The expansion coefficients were estimated through Latin hypercube sampling of the parameters in the vertical and streamwise gust spectra. The first-order chaos expansion in terms of the uncertain spectral parameters was found to be sufficient for representing the stochastic aerodynamic lift, which was found to be most sensitive to imprecision in the standard deviation of the vertical component of the gust. These conclusions were found to be unaffected by ignoring the effects of gusts on the locations of the shed vortices in the airfoil’s wake. [Copyright &y& Elsevier] AB - Copyright of Probabilistic Engineering Mechanics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GUST loads KW - STOCHASTIC processes KW - VORTEX motion KW - HERMITE polynomials KW - POLYNOMIALS KW - UNCERTAINTY (Information theory) KW - LATTICE theory KW - Gust loads KW - PCE KW - Polynomial chaos expansion KW - Uncertainty quantification N1 - Accession Number: 44699079; Pettit, C.L. 1 Hajj, M.R. 2; Email Address: mhajj@vt.edu Beran, P.S. 3; Affiliation: 1: Department of Aerospace Engineering, United States Naval Academy, Annapolis, MD 21402, USA 2: Department of Engineering Science and Mechanics, Virginia Tech, Blacksburg, VA 24061, USA 3: Air Vehicles Directorate, US Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Jan2010, Vol. 25 Issue 1, p153; Subject Term: GUST loads; Subject Term: STOCHASTIC processes; Subject Term: VORTEX motion; Subject Term: HERMITE polynomials; Subject Term: POLYNOMIALS; Subject Term: UNCERTAINTY (Information theory); Subject Term: LATTICE theory; Author-Supplied Keyword: Gust loads; Author-Supplied Keyword: PCE; Author-Supplied Keyword: Polynomial chaos expansion; Author-Supplied Keyword: Uncertainty quantification; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.probengmech.2009.08.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44699079&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carrese, Paul O. T1 - The Political Philosophy of George Washington. JO - Review of Politics JF - Review of Politics Y1 - 2010///Winter2010 VL - 72 IS - 1 M3 - Book Review SP - 143 EP - 147 PB - Cambridge University Press SN - 00346705 AB - The article reviews the book "The Political Philosophy of George Washington," by Jeffry H. Morrison. KW - NONFICTION KW - MORRISON, Jeffry H. KW - WASHINGTON, George, 1732-1799 -- Political & social views KW - POLITICAL Philosophy of George Washington, The (Book) N1 - Accession Number: 48316340; Carrese, Paul O. 1; Affiliation: 1: Professor of Political Science, United States Air Force Academy.; Source Info: Winter2010, Vol. 72 Issue 1, p143; Subject Term: NONFICTION; Reviews & Products: POLITICAL Philosophy of George Washington, The (Book); People: MORRISON, Jeffry H.; People: WASHINGTON, George, 1732-1799 -- Political & social views; Number of Pages: 5p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48316340&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Donovan, John T1 - The Cold War U.S. Army: Building Deterrence for Limited War. JO - War in History JF - War in History Y1 - 2010/01// VL - 17 IS - 1 M3 - Book Review SP - 128 EP - 129 PB - Sage Publications, Ltd. SN - 09683445 AB - The article reviews the book "The Cold War U.S. Army: Building Deterrence for Limited War," by Ingo Trauschweizer. KW - HISTORY KW - NONFICTION KW - UNITED States. Army KW - UNITED States. Army -- History KW - TRAUSCHWEIZER, Ingo KW - COLD War US Army: Building Deterrence for Limited War, The (Book) N1 - Accession Number: 47490015; Donovan, John 1; Affiliation: 1: United States Air Force Academy.; Source Info: Jan2010, Vol. 17 Issue 1, p128; Subject Term: HISTORY; Subject Term: NONFICTION; Subject Term: UNITED States. Army; Company/Entity: UNITED States. Army -- History; Reviews & Products: COLD War US Army: Building Deterrence for Limited War, The (Book); NAICS/Industry Codes: 928110 National Security; People: TRAUSCHWEIZER, Ingo; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47490015&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fraser, A. AU - Borg, J. P. AU - Jordan, J. L. T1 - THE EFFECT OF NANO-PARTICLES ON THE ONE-DIMENSIONAL SHOCK COMPACTION OF AL-MNO2-EPOXY MIXTURES. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/12/28/ VL - 1195 IS - 1 M3 - Article SP - 61 EP - 64 PB - American Institute of Physics SN - 0094243X AB - Mesoscale simulations of the shock compaction of Al-MnO2-Epoxy mixtures were performed in CTH to investigate what effect changing the size of the aluminum particles and the alumina coating has on the formation of hot spots. In addition the presence of voids and their effect on the hot spot formation was also investigated. A representative volume was created where aluminum particle diameters ranged from millimeter to nanometer; also, in the nano-sized setup, the alumina coating was varied from 0 to 3 nanometers. It was noticed that changing the aluminum grain size had a slight effect on the hotspot formation. Changing the alumina coating had an effect on the maximum temperature reached though no trend is apparent. Also, it was found that inserting randomly placed voids into the epoxy binder created a large spike in initial temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM KW - ALUMINUM oxide KW - SIMULATION methods & models KW - EPOXY resins KW - LIGHT metals KW - alumina KW - aluminum KW - CTH KW - heterogeneous material KW - mesoscale: simulations N1 - Accession Number: 47375929; Fraser, A. 1 Borg, J. P. 1 Jordan, J. L. 2; Affiliation: 1: Marquette University, Dept. of Mechanical Engineering, 1515 W. Wisconsin Ave. Milwaukee, WI53233. 2: Air Force Research Laboratory (AFRL/RWME), Eglin AFB, FL 32578.; Source Info: 12/28/2009, Vol. 1195 Issue 1, p61; Subject Term: ALUMINUM; Subject Term: ALUMINUM oxide; Subject Term: SIMULATION methods & models; Subject Term: EPOXY resins; Subject Term: LIGHT metals; Author-Supplied Keyword: alumina; Author-Supplied Keyword: aluminum; Author-Supplied Keyword: CTH; Author-Supplied Keyword: heterogeneous material; Author-Supplied Keyword: mesoscale: simulations; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.3295215 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47375929&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sunhee Yoo AU - Stewart, D. Scott AU - Lambert, David E. T1 - MODELLING SOLID STATE DETONATION AND DETONATION WITH DESIGNED MICROSTRUCTURE. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/12/28/ VL - 1195 IS - 1 M3 - Article SP - 87 EP - 90 PB - American Institute of Physics SN - 0094243X AB - Solid state detonation (SSD) refers to nonclassical supersonic reactive wave phenomena in energetic materials that are not typically considered explosives. Reactive energetic materials include both metal/metal oxide and metal oxide/polymer systems with thermitic reaction. Like conventional solid explosives, the materials are manufactured composites with a well-defined microstructure. Ingredients include nano-engineered energetic materials with novel surface and reaction properties. The manufactured materials are still described by a continuum limit informed by the microstructural properties. We consider limit model formulations that include acoustic dispersion phenomena, void effect, macroscopic ignition and extinction of steady traveling reactive waves, in a modeling framework that can aid the design of new materials, which will be the basis for our continued work on SSD including the inter-material heat transfer and kinetics. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRASONIC waves KW - EXPLOSIVES KW - MICROMECHANICS KW - DYNAMICS KW - TECHNICAL chemistry KW - aluminum/teflon mixture KW - Solid state detonation N1 - Accession Number: 47375860; Sunhee Yoo 1 Stewart, D. Scott 1 Lambert, David E. 2; Affiliation: 1: Mechanical Science and Engineering, University of Illinois, Urbana, IL 61801. 2: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, 32542.; Source Info: 12/28/2009, Vol. 1195 Issue 1, p87; Subject Term: ULTRASONIC waves; Subject Term: EXPLOSIVES; Subject Term: MICROMECHANICS; Subject Term: DYNAMICS; Subject Term: TECHNICAL chemistry; Author-Supplied Keyword: aluminum/teflon mixture; Author-Supplied Keyword: Solid state detonation; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.3295284 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47375860&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stewart, D. Scott AU - Lambert, David E. AU - Yoo, Sunhee AU - Lieber, Mark AU - Holman, Steven T1 - INTEGRATED EXPERIMENT AND MODELING OF INSENSITIVE HIGH EXPLOSIVES. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/12/28/ VL - 1195 IS - 1 M3 - Article SP - 91 EP - 94 PB - American Institute of Physics SN - 0094243X AB - New design paradigms for insensitive high explosives are being sought for use in munitions applications that require enhanced safety, reliability and performance. We describe recent work of our group that uses an integrated approach to develop predictive models, guided by experiments. Insensitive explosive can have relatively longer detonation reaction zones and slower reaction rates than their sensitive counterparts. We employ reactive flow models that are constrained by detonation shock dynamics (DSD) to pose candidate predictive models. We discuss the variation of the pressure dependent reaction rate exponent and reaction order on the length of the supporting reaction zone, the detonation velocity curvature relation, the computed critical energy required for initiation, the relation between the diameter effect curve and the corresponding normal detonation velocity curvature relation. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXPLOSIVES KW - DETONATION waves KW - TECHNICAL chemistry KW - CHEMICAL kinetics KW - CHEMICAL reactions KW - Detonation KW - Insensitive Explosive N1 - Accession Number: 47375850; Stewart, D. Scott 1 Lambert, David E. 2 Yoo, Sunhee 1 Lieber, Mark 1 Holman, Steven 1; Affiliation: 1: Mechanical Science and Engineering, University of Illinois, Urbana, IL 61801. 2: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, 32542.; Source Info: 12/28/2009, Vol. 1195 Issue 1, p91; Subject Term: EXPLOSIVES; Subject Term: DETONATION waves; Subject Term: TECHNICAL chemistry; Subject Term: CHEMICAL kinetics; Subject Term: CHEMICAL reactions; Author-Supplied Keyword: Detonation; Author-Supplied Keyword: Insensitive Explosive; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325920 Explosives Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.3295294 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47375850&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thornhill, T. F. AU - Chhabildas, L. C. AU - Reinhart, W. D. T1 - TIME RESOLVED OPTICAL SIGNATURES FOR HUGONIOT STATE MEASUREMENTS IN SHOCK COMPRESSED COMPOSITION-B. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/12/28/ VL - 1195 IS - 1 M3 - Article SP - 404 EP - 407 PB - American Institute of Physics SN - 0094243X AB - Broadband photo-diodes sensitive over the visible and near infrared electromagnetic spectrum are used to monitor impact flash luminosity versus time. Based on careful experimental layout and impact timing the prompt portion of the impact flash signatures reveal the shock propagation timing through a Composition-B target plate. Application of impedance matching techniques and Rankine-Hugoniot Jump equations to this waveform timing provides apparent Hugoniot state measurements of shock compressed Composition-B in the 25 to 50 GPa range. This data will be discussed in detail, along with comparison to previous work below the Composition-B detonation pressure. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTODIODES KW - SEMICONDUCTOR diodes KW - ELECTRIC impedance KW - IMPEDANCE matching KW - VACUUM tubes KW - Composition-B KW - detonation velocity KW - Impact flash KW - photo-diode KW - shock velocity N1 - Accession Number: 47375986; Thornhill, T. F. 1 Chhabildas, L. C. 2 Reinhart, W. D. 3; Affiliation: 1: Ktech Corporation, 10800 Gibson Blvd. S.E., Albuquerque, New Mexico 87123. 2: Air Force Research Laboratory, 101 W. Eglin Blvd., Eglin A.F.B., Florida 32542. 3: Sandia National Laboratories, PO Box 5800 MS-1195, Albuquerque, New Mexico 87123.; Source Info: 12/28/2009, Vol. 1195 Issue 1, p404; Subject Term: PHOTODIODES; Subject Term: SEMICONDUCTOR diodes; Subject Term: ELECTRIC impedance; Subject Term: IMPEDANCE matching; Subject Term: VACUUM tubes; Author-Supplied Keyword: Composition-B; Author-Supplied Keyword: detonation velocity; Author-Supplied Keyword: Impact flash; Author-Supplied Keyword: photo-diode; Author-Supplied Keyword: shock velocity; NAICS/Industry Codes: 327215 Glass Product Manufacturing Made of Purchased Glass; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 327212 Other Pressed and Blown Glass and Glassware Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.3295157 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47375986&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chakravarthy, Sunada AU - Panchadhar, Rohan AU - Gonthier, Keith AU - Rumchik, Chad T1 - A CONTINUUM THEORY FOR SHOCK INDUCED HEATING OF METALIZED EXPLOSIVE. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/12/28/ VL - 1195 IS - 1 M3 - Article SP - 444 EP - 447 PB - American Institute of Physics SN - 0094243X AB - A well-developed continuum theory for DDT in granular explosive is generalized to account for the existence of an arbitrary number of condensed phases and a gas product phase. Formulation of the more generic theory is motivated by a desire to model both low and high pressure impact of metalized explosive for which the metal and explosive phases may have distinct thermodynamic states. The theory is consistent with the strong form of the dissipation inequality and allows for flexible partitioning of dissipation between phases. The theory is applied to inert impact of aluminized HMX in the limit of low gas pressure. It is shown that the partitioning of compaction potential energy between the phases significantly affects equilibrium phase pressures but minimally affects compaction dissipation within waves. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHOCK waves KW - EXPLOSIVES KW - COMPACTING KW - THERMODYNAMICS KW - ENERGY dissipation KW - energetic materials KW - hot-spots: high-explosives KW - mesoscale: simulations N1 - Accession Number: 47375975; Chakravarthy, Sunada 1 Panchadhar, Rohan 1 Gonthier, Keith 1 Rumchik, Chad 2; Affiliation: 1: Mechanical Engineering Department, Louisiana State University, Baton Rouge, LA 70803 2: Air Force Research Laboratory, AFRL-RWME, Eglin AFB, FL 32542; Source Info: 12/28/2009, Vol. 1195 Issue 1, p444; Subject Term: SHOCK waves; Subject Term: EXPLOSIVES; Subject Term: COMPACTING; Subject Term: THERMODYNAMICS; Subject Term: ENERGY dissipation; Author-Supplied Keyword: energetic materials; Author-Supplied Keyword: hot-spots: high-explosives; Author-Supplied Keyword: mesoscale: simulations; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.3295169 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47375975&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jenkins, C. M. AU - Horie, Y. AU - Ripley, R. C. AU - Wu, C.-Y. T1 - IMAGING HIGH SPEED PARTICLES IN EXPLOSIVE DRIVEN BLAST WAVES. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/12/28/ VL - 1195 IS - 1 M3 - Article SP - 635 EP - 638 PB - American Institute of Physics SN - 0094243X AB - This research describes a new application of a commercially available particle image velocimetry (PIV) instrument adapted for imaging particles in a blast wave. Powder was dispersed through the PIV light sheet using a right circular cylindrical charge containing aluminum powder filled in the annular space between the explosive core and exterior paper tube wall of the charge. Images acquired from each shot showed particle agglomeration and unique structures with the smaller particle diameters having developed structured appearances. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVES (Physics) KW - PARTICLES (Nuclear physics) KW - ALUMINUM powder KW - AGGLOMERATION (Materials) KW - VELOCIMETRY KW - blast wave KW - flow KW - Imaging KW - particle velocity N1 - Accession Number: 47375925; Jenkins, C. M. 1,2 Horie, Y. 2 Ripley, R. C. 3 Wu, C.-Y. 3; Affiliation: 1: Dept. of Environmental Engineering Sciences, University of Florida, Gainesville, FL 32611-6450. 2: Air Force Research Laboratory, Munitions Directorate, Eglin AFB FL 32542. 3: Martec Limited, Suite 400-1888 Brunswick Street, Halifax, NS, B3J3J8, Canada.; Source Info: 12/28/2009, Vol. 1195 Issue 1, p635; Subject Term: WAVES (Physics); Subject Term: PARTICLES (Nuclear physics); Subject Term: ALUMINUM powder; Subject Term: AGGLOMERATION (Materials); Subject Term: VELOCIMETRY; Author-Supplied Keyword: blast wave; Author-Supplied Keyword: flow; Author-Supplied Keyword: Imaging; Author-Supplied Keyword: particle velocity; NAICS/Industry Codes: 212210 Iron Ore Mining; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.3295219 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47375925&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reinhart, W. D. AU - Asay, J. R. AU - Chhabildas, L. C. AU - Alexander, C. S. T1 - INVESTIGATION OF 6061-T6 ALUMINUM STRENGTH PROPERTIES TO 160 GPa. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/12/28/ VL - 1195 IS - 1 M3 - Article SP - 977 EP - 980 PB - American Institute of Physics SN - 0094243X AB - Shock compression experiments were performed on 6061-T6 aluminum up to 160 GPa to probe aluminum strength in the shocked state as it passes through the melt regime. A careful set of experiments, using established two and three stage flyer plate launch techniques were conducted using symmetric impact loading conditions to compress the aluminum through the solid to the liquid phase boundary. Velocity interferometry provides the fine structure of shock loading and release behavior almost as an in situ particle velocity wave profile at the aluminum/lithium fluoride window interface. Results are detailed in terms of wave speeds and estimates of strength of the material in the shocked state. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM KW - SHOCK (Mechanics) KW - STRAINS & stresses (Mechanics) KW - IMPACT (Mechanics) KW - MATERIALS KW - Aluminum KW - melt KW - shock KW - strength KW - three-stage gun KW - VISAR N1 - Accession Number: 47375835; Reinhart, W. D. 1 Asay, J. R. 1 Chhabildas, L. C. 2 Alexander, C. S. 3; Affiliation: 1: Ktech Corporation (consultant to Sandia National Laboratories) Albuquerque, NM, 87123. 2: Air Force Research Laboratory, Eglin, FL, 32542. 3: Sandia National Laboratories, Albuquerque, NM, 87185.; Source Info: 12/28/2009, Vol. 1195 Issue 1, p977; Subject Term: ALUMINUM; Subject Term: SHOCK (Mechanics); Subject Term: STRAINS & stresses (Mechanics); Subject Term: IMPACT (Mechanics); Subject Term: MATERIALS; Author-Supplied Keyword: Aluminum; Author-Supplied Keyword: melt; Author-Supplied Keyword: shock; Author-Supplied Keyword: strength; Author-Supplied Keyword: three-stage gun; Author-Supplied Keyword: VISAR; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.3295309 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47375835&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kleiser, G. J. AU - Chhabildas, L. C. AU - Reinhart, W. D. T1 - SHOCK LOADING OF POLYCRYSTALLINE ALUMINA AND SAPPHIRE—A COMPARATIVE STUDY. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/12/28/ VL - 1195 IS - 1 M3 - Article SP - 981 EP - 984 PB - American Institute of Physics SN - 0094243X AB - There is considerable interest in the shock loading behavior of aluminum oxide whether it is in the polycrystalline phase or in the single crystal phase. Results of well-controlled experiments conducted recently on polycrystalline alumina and Z-cut sapphire are summarized to conduct a comparative study. Although the experimental results appear to have the same behavior in the shock-velocity vs. particle-velocity plane, they are considerably different in the stress-volume compression plane. This is an extremely interesting observation and cannot be explained merely by the differences in the strength of the material in the shocked state. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM oxide KW - SAPPHIRES KW - CRYSTALS KW - PARTICLES KW - COMPARATIVE studies KW - alumina KW - sapphire KW - Shock loading KW - single crystals N1 - Accession Number: 47375834; Kleiser, G. J. 1 Chhabildas, L. C. 1 Reinhart, W. D. 2; Affiliation: 1: Air Force Research Laboratory/Munitions Directorate, 101 W. Eglin Blvd, Eglin AFB, FL 32542. 2: Sandia National Laboratorie, P.O. Box 5800, Albuquerque, New Mexico 87185.; Source Info: 12/28/2009, Vol. 1195 Issue 1, p981; Subject Term: ALUMINUM oxide; Subject Term: SAPPHIRES; Subject Term: CRYSTALS; Subject Term: PARTICLES; Subject Term: COMPARATIVE studies; Author-Supplied Keyword: alumina; Author-Supplied Keyword: sapphire; Author-Supplied Keyword: Shock loading; Author-Supplied Keyword: single crystals; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.3295310 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47375834&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Herbold, E. B. AU - Jordan, J. L. AU - Nixon, M. E. AU - Thadhani, N. N. T1 - MODELING AND CHARACTERIZATION OF PMMA FOR HIGH STRAIN-RATE AND FINITE DEFORMATIONS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/12/28/ VL - 1195 IS - 1 M3 - Article SP - 1237 EP - 1240 PB - American Institute of Physics SN - 0094243X AB - The complex response of glassy polymers to high strain-rate dynamic loading necessitates accurate modeling of these events for comparison with experiments. The strain-rate, temperature and the strain softening behavior are significant and must be considered for large deformations. Several constitutive relationships are discussed in terms of their applicability to modeling PMMA in gap-tests. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Dynamic testing KW - MACROMOLECULES KW - POLYMERS KW - MATHEMATICAL models KW - SUPRAMOLECULAR chemistry KW - comp-b KW - constitutive model KW - dynamic deformation KW - gap-test KW - PMMA N1 - Accession Number: 47376112; Herbold, E. B. 1,2 Jordan, J. L. 2 Nixon, M. E. 3 Thadhani, N. N. 1; Affiliation: 1: School of Materials Science and Engineering, Georgia Institute of Technology, Love Manufacturing Building, 771 Ferst Drive, Atlanta, Georgia 30332, USA. 2: Energetic Materials Branch, Munitions Directorate, Air Force Research Laboratory, Eglin AFB, FL 32542, USA. 3: Computational Mechanics Branch, Munitions Directorate, Air Force Research Laboratory, Eglin AFB, FL 32542, USA.; Source Info: 12/28/2009, Vol. 1195 Issue 1, p1237; Subject Term: MATERIALS -- Dynamic testing; Subject Term: MACROMOLECULES; Subject Term: POLYMERS; Subject Term: MATHEMATICAL models; Subject Term: SUPRAMOLECULAR chemistry; Author-Supplied Keyword: comp-b; Author-Supplied Keyword: constitutive model; Author-Supplied Keyword: dynamic deformation; Author-Supplied Keyword: gap-test; Author-Supplied Keyword: PMMA; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.3295028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47376112&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jordan, Jennifer L. AU - Dattelbaum, Dana AU - Ferranti, Louis AU - Sutherland, Gerrit AU - Baer, Mel AU - Richards, Wayne AU - Sheffield, Stephen AU - Dick, Richard D. AU - Thadhani, Naresh N. T1 - SHOCK EQUATION OF STATE OF SINGLE CONSTITUENT AND MULTI-CONSTITUENT EPOXY-BASED PARTICULATE COMPOSITES. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/12/28/ VL - 1195 IS - 1 M3 - Article SP - 1253 EP - 1256 PB - American Institute of Physics SN - 0094243X AB - There are several studies in the literature regarding the equation of state of alumina-epoxy composites. Although this single component system interacts in a complex manner with shock waves, the addition of a second metal or ceramic particulate can result in even more complex interactions. This paper presents a review of shock loading studies on epoxy-based particulate composites. The relationship between equation of state parameters and particulate concentration is investigated. The measured shock properties are compared with a mixture model for two and three phases. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM oxide KW - EPOXY compounds KW - EQUATIONS of state KW - SHOCK waves KW - SHOCK (Mechanics) KW - epoxy particulate composites KW - Hugoniot KW - mixture model N1 - Accession Number: 47376108; Jordan, Jennifer L. 1 Dattelbaum, Dana 2 Ferranti, Louis 3 Sutherland, Gerrit 4 Baer, Mel 5 Richards, Wayne 1 Sheffield, Stephen 2 Dick, Richard D. 6 Thadhani, Naresh N. 7; Affiliation: 1: Munitions Directorate, Air Force Research Laboratory, Eglin AFB, FL 32542. 2: Los Alamos National Laboratory, Los Alamos, NM 87545. 3: Lawrence Livermore National Laboratory, Livermore, CA. 4: Naval Surface Warfare Center, Indian Head, MD. 5: Sandia National Laboratories, Albuquerque, NM 87185-0836. 6: Shocks Unlimited, Albuquerque, NM. 7: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332.; Source Info: 12/28/2009, Vol. 1195 Issue 1, p1253; Subject Term: ALUMINUM oxide; Subject Term: EPOXY compounds; Subject Term: EQUATIONS of state; Subject Term: SHOCK waves; Subject Term: SHOCK (Mechanics); Author-Supplied Keyword: epoxy particulate composites; Author-Supplied Keyword: Hugoniot; Author-Supplied Keyword: mixture model; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.3295032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47376108&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yumusak, C. AU - Singh, Th. B. AU - Sariciftci, N. S. AU - Grote, J. G. T1 - Bio-organic field effect transistors based on crosslinked deoxyribonucleic acid (DNA) gate dielectric. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2009/12/28/ VL - 95 IS - 26 M3 - Article SP - 263304 PB - American Institute of Physics SN - 00036951 AB - Using DNA-based biopolymers purified from salmon waste, as an insulating layer, bio-organic field effect transistor (BiOFET) devices were fabricated. Such devices exhibit current-voltage characteristics with low operational voltages as compared with using other organic dielectrics. The observed hysteresis in transfer characteristics of such BiOFETs can be reduced using a crosslinking process. Such crosslinked DNA complex is used as a gate dielectric in n-type C60 as well as p-type α-sexithiophene (T6) based BiOFETs. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANIC field-effect transistors KW - DNA KW - BIOPOLYMERS KW - DIELECTRICS KW - ELECTRIC potential KW - CROSSLINKING (Polymerization) N1 - Accession Number: 47244461; Yumusak, C. 1; Email Address: yumusak@yildiz.edu.tr Singh, Th. B. 2 Sariciftci, N. S. 3 Grote, J. G. 4; Affiliation: 1: Department of Physics, Faculty of Arts and Sciences, Yildiz Technical University, Davutpasa Campus, Esenler, 34210 Istanbul, Turkey 2: Molecular and Health Technologies, Ian Wark Laboratory, CSIRO, Bayview Ave., Clayton, Victoria 3168, Australia 3: Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University of Linz, A-4040 Linz, Austria 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLPS, 3005 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433-7707, USA; Source Info: 12/28/2009, Vol. 95 Issue 26, p263304; Subject Term: ORGANIC field-effect transistors; Subject Term: DNA; Subject Term: BIOPOLYMERS; Subject Term: DIELECTRICS; Subject Term: ELECTRIC potential; Subject Term: CROSSLINKING (Polymerization); Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.3278592 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47244461&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ner, Yogesh AU - Navarathne, Daminda AU - Niedzwiedzki, Dariusz M. AU - Grote, James G. AU - Dobrynin, Andrey V. AU - Frank, Harry A. AU - Sotzing, Gregory A. T1 - Stabilization of fluorophore in DNA thin films. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2009/12/28/ VL - 95 IS - 26 M3 - Article SP - 263701 PB - American Institute of Physics SN - 00036951 AB - The photostability of the nonlinear optical dye, Hemi-22, improves upon encapsulation in DNA thin films. The interactions of Hemi-22 with DNA, along with the intrinsic properties of DNA are responsible for these remarkable improvements in the photostability of the dye in comparison to the dye in a poly(methyl methacrylate) as a control. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - MICROENCAPSULATION KW - DNA KW - ELECTROMAGNETIC interactions KW - POLYMETHYLMETHACRYLATE KW - OPTICS N1 - Accession Number: 47244445; Ner, Yogesh 1 Navarathne, Daminda 1,2 Niedzwiedzki, Dariusz M. 2 Grote, James G. 3 Dobrynin, Andrey V. 1,4 Frank, Harry A. 2 Sotzing, Gregory A. 1,2; Email Address: g.sotzing@uconn.edu; Affiliation: 1: The Polymer Program, Institute of Materials Science, University of Connecticut, 97 N. Eagleville Rd., Storrs, Connecticut 06269, USA 2: Department of Chemistry, University of Connecticut, 55 N. Eagleville Rd., Storrs, Connecticut 06269, USA 3: U.S. Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXPS, Wright-Patterson Air Force Base, Ohio 45433-7707, USA 4: Department of Physics, University of Connecticut, 97 N. Eagleville Rd., Storrs, Connecticut 06269, USA; Source Info: 12/28/2009, Vol. 95 Issue 26, p263701; Subject Term: THIN films; Subject Term: MICROENCAPSULATION; Subject Term: DNA; Subject Term: ELECTROMAGNETIC interactions; Subject Term: POLYMETHYLMETHACRYLATE; Subject Term: OPTICS; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.3262944 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47244445&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aouadi, S.M. AU - Luster, B. AU - Kohli, P. AU - Muratore, C. AU - Voevodin, A.A. T1 - Progress in the development of adaptive nitride-based coatings for high temperature tribological applications JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2009/12/25/ VL - 204 IS - 6/7 M3 - Article SP - 962 EP - 968 SN - 02578972 AB - Abstract: Adaptive tribological coatings were recently developed as a new class of smart materials that were designed to adjust their surface chemical composition and structure as a function of changes in the working environment to minimize friction coefficient and wear between contact surfaces. This paper provides an overview of the current research developments in this field, including: (1) Chameleon nanocomposite coatings which are produced by depositing a multi-phase structure whereby some of the phases provide mechanical strength and others are lubricious; (2) Micro- and nano-textured coatings which consist of hard nitride films with highly ordered micropores and nanopores that are subsequently filled with solid lubricants using various techniques such as lithography, reactive ion etching, laser texturing, pulsed air arc treatment, and ceramic beads as placeholders for sputter deposition; and, (3) Carbon and nitride nanotubes that are filled electrochemically with solid lubricants. The frictional and wear properties of the above three classes of newly developed adaptive structures, tested in various controlled environmental conditions (temperature, humidity), will be discussed in detail. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL coating KW - TRIBOLOGY KW - NITRIDES KW - NANOSTRUCTURED materials KW - TEMPERATURE effect KW - SMART materials KW - CHEMICAL structure KW - SURFACE chemistry KW - Adaptive coatings KW - Friction KW - Nitrides KW - Sputtering KW - Wear N1 - Accession Number: 45413067; Aouadi, S.M. 1; Email Address: saouadi@physics.siu.edu Luster, B. 1 Kohli, P. 2 Muratore, C. 3 Voevodin, A.A. 3; Affiliation: 1: Department of Physics, Southern Illinois University, Carbondale, IL 62901, USA 2: Department of Chemistry and Biochemistry, Southern Illinois University, Carbondale, IL 62901, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Dec2009, Vol. 204 Issue 6/7, p962; Subject Term: METAL coating; Subject Term: TRIBOLOGY; Subject Term: NITRIDES; Subject Term: NANOSTRUCTURED materials; Subject Term: TEMPERATURE effect; Subject Term: SMART materials; Subject Term: CHEMICAL structure; Subject Term: SURFACE chemistry; Author-Supplied Keyword: Adaptive coatings; Author-Supplied Keyword: Friction; Author-Supplied Keyword: Nitrides; Author-Supplied Keyword: Sputtering; Author-Supplied Keyword: Wear; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.surfcoat.2009.04.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45413067&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Posgai, Ryan AU - Ahamed, Maqusood AU - Hussain, Saber M. AU - Rowe, John J. AU - Nielsen, Mark G. T1 - Inhalation method for delivery of nanoparticles to the Drosophila respiratory system for toxicity testing JO - Science of the Total Environment JF - Science of the Total Environment Y1 - 2009/12/20/ VL - 408 IS - 2 M3 - Article SP - 439 EP - 443 SN - 00489697 AB - Abstract: The growth of the nanotechnology industry and subsequent proliferation of nanoparticle types present the need to rapidly assess nanoparticle toxicity. We present a novel, simple and cost-effective nebulizer-based method to deliver nanoparticles to the Drosophila melanogaster respiratory system, for the purpose of toxicity testing. FluoSpheres®, silver, and CdSe/ZnS nanoparticles of different sizes were effectively aerosolized, showing the system is capable of functioning with a wide range of nanoparticle types and sizes. Red fluorescent CdSe/ZnS nanoparticles were successfully delivered to the fly respiratory system, as visualized by fluorescent microscopy. Silver coated and uncoated nanoparticles were delivered in a toxicity test, and induced Hsp70 expression in flies, confirming the utility of this model in toxicity testing. This is the first method developed capable of such delivery, provides the advantage of the Drosophila health model, and can serve as a link between tissue culture and more expensive mammalian models in a tiered toxicity testing strategy. [Copyright &y& Elsevier] AB - Copyright of Science of the Total Environment is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - RESPIRATORY organs -- Physiology KW - TOXICITY testing KW - DROSOPHILA KW - NANOSTRUCTURED materials industry KW - TISSUE culture KW - FLUORESCENCE microscopy KW - ANIMAL models in research KW - Drosophila KW - Hsp70 KW - Inhalation model KW - Nanoparticle KW - Nanotoxicity N1 - Accession Number: 45216085; Posgai, Ryan 1 Ahamed, Maqusood 1 Hussain, Saber M. 2 Rowe, John J. 1 Nielsen, Mark G. 1; Email Address: Mark.Nielsen@notes.udayton.edu; Affiliation: 1: Department of Biology, University of Dayton, Dayton, OH, 45469-2320 USA 2: Applied Biotechnology Branch, Human Effectiveness Directorate Air Force Research Laboratory/RHBP, Wright-Patterson Air Force Base, OH, 45433 USA; Source Info: Dec2009, Vol. 408 Issue 2, p439; Subject Term: NANOPARTICLES; Subject Term: RESPIRATORY organs -- Physiology; Subject Term: TOXICITY testing; Subject Term: DROSOPHILA; Subject Term: NANOSTRUCTURED materials industry; Subject Term: TISSUE culture; Subject Term: FLUORESCENCE microscopy; Subject Term: ANIMAL models in research; Author-Supplied Keyword: Drosophila; Author-Supplied Keyword: Hsp70; Author-Supplied Keyword: Inhalation model; Author-Supplied Keyword: Nanoparticle; Author-Supplied Keyword: Nanotoxicity; NAICS/Industry Codes: 111421 Nursery and Tree Production; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.scitotenv.2009.10.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45216085&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Javorsek, II, D. AU - Sturrock, P. AU - Buncher, J. AU - Fischbach, E. AU - Gruenwald, T. AU - Hoft, A. AU - Horan, T. AU - Jenkins, J. AU - Kerford, J. AU - Lee, R. AU - Mattes, J. AU - Morris, D. AU - Mudry, R. AU - Newport, J. AU - Petrelli, M. AU - Silver, M. AU - Stewart, C. AU - Terry, B. AU - Willenberg, H. T1 - Investigation of Periodic Nuclear Decay Data with Spectral Analysis Techniques. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/12/17/ VL - 1182 IS - 1 M3 - Article SP - 292 EP - 295 PB - American Institute of Physics SN - 0094243X AB - We provide the results from a spectral analysis of nuclear decay experiments displaying unexplained periodic fluctuations. The analyzed data was from 56Mn decay reported by the Children’s Nutrition Research Center in Houston, 32Si decay reported by an experiment performed at the Brookhaven National Laboratory, and 226Ra decay reported by an experiment performed at the Physikalisch-Technische-Bundesanstalt in Germany. All three data sets possess the same primary frequency mode consisting of an annual period. Additionally a spectral comparison of the local ambient temperature, atmospheric pressure, relative humidity, Earth-Sun distance, and the plasma speed and latitude of the heliospheric current sheet (HCS) was performed. Following analysis of these six possible causal factors, their reciprocals, and their linear combinations, a possible link between nuclear decay rate fluctuations and the linear combination of the HCS latitude and 1/R motivates searching for a possible mechanism with such properties. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIOACTIVE decay KW - ATMOSPHERIC pressure KW - HUMIDITY KW - NEUTRONS KW - PARTICLES (Nuclear physics) KW - Radioactive Decay KW - Spectral Analysis N1 - Accession Number: 47200884; Javorsek, II, D. 1 Sturrock, P. 2 Buncher, J. 3 Fischbach, E. 3 Gruenwald, T. 3 Hoft, A. 3,4 Horan, T. 3,4 Jenkins, J. 3 Kerford, J. 3,4 Lee, R. 5 Mattes, J. 3 Morris, D. 5 Mudry, R. 5 Newport, J. 3 Petrelli, M. 3,4 Silver, M. 4 Stewart, C. 3,4 Terry, B. 5 Willenberg, H. 6; Affiliation: 1: 416th Flight Test Squadron, 412th Test Wing, Edwards AFB, CA 93524. 2: Center for Space Science Astrophysics, Stanford University, Stanford, CA 94305. 3: Department of Physics, Purdue University, West Lafayette, IN 47907. 4: Detachment 220, Air Force Reserve Officer Training Corps, West Lafayette, IN 47907. 5: Department of Physics, United States Air Force Academy, CO 80920. 6: American Aerospace Advisors, Inc., Radnor, PA 19087.; Source Info: 12/17/2009, Vol. 1182 Issue 1, p292; Subject Term: RADIOACTIVE decay; Subject Term: ATMOSPHERIC pressure; Subject Term: HUMIDITY; Subject Term: NEUTRONS; Subject Term: PARTICLES (Nuclear physics); Author-Supplied Keyword: Radioactive Decay; Author-Supplied Keyword: Spectral Analysis; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.3293804 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47200884&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kiet A. Nguyen AU - Paul N. Day AU - Ruth Pachter T1 - One- and Two-Photon Spectra of Platinum Acetylide Chromophores: A TDDFT Study. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2009/12/17/ VL - 113 IS - 50 M3 - Article SP - 13943 EP - 13952 SN - 10895639 AB - We report one- (OPA) and two-photon absorption (TPA) excitation energies and cross-sections for a series of platinum acetylides using time-dependent density functional theory. Because of the facile rotations of the trimethylphosphinyl and phenylene groups, we apply a Boltzmann-weighted average over thermally accessible conformations to obtain the final spectra, resulting in better agreement with experimental observations. We examine various basis sets and functionals to evaluate their performance in the gas-phase and in solution. Effects of donor and acceptor groups on the OPA and TPA resonances and intensities are also discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANOPLATINUM compounds KW - DENSITY functionals KW - PHOTONS KW - ABSORPTION KW - ELECTRONIC excitation KW - CROSS sections (Nuclear physics) KW - FUNCTIONAL groups KW - CONFORMATIONAL analysis N1 - Accession Number: 46836106; Kiet A. Nguyen 1 Paul N. Day 1 Ruth Pachter 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Dec2009, Vol. 113 Issue 50, p13943; Subject Term: ORGANOPLATINUM compounds; Subject Term: DENSITY functionals; Subject Term: PHOTONS; Subject Term: ABSORPTION; Subject Term: ELECTRONIC excitation; Subject Term: CROSS sections (Nuclear physics); Subject Term: FUNCTIONAL groups; Subject Term: CONFORMATIONAL analysis; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=46836106&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grupen, Matt T1 - An alternative treatment of heat flow for charge transport in semiconductor devices. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2009/12/15/ VL - 106 IS - 12 M3 - Article SP - 123702 EP - 123709 PB - American Institute of Physics SN - 00218979 AB - A unique thermodynamic model of Fermi gases suitable for semiconductor device simulation is presented. Like other models, such as drift diffusion and hydrodynamics, it employs moments of the Boltzmann transport equation derived using the Fermi–Dirac distribution function. However, unlike other approaches, it replaces the concept of an electron thermal conductivity with the heat capacity of an ideal Fermi gas to determine heat flow. The model is used to simulate a field-effect transistor and show that the external current-voltage characteristics are strong functions of the state space available to the heated Fermi distribution. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLID solutions KW - SEPARATION (Technology) KW - SEMICONDUCTORS KW - FLUID dynamics KW - SOLUTION (Chemistry) KW - FIELD-effect transistors KW - SEMICONDUCTOR doping N1 - Accession Number: 47244295; Grupen, Matt 1; Affiliation: 1: Air Force Research Laboratory, 2241 Avionics Circle, Wright-Patterson AFB, Ohio 45433,; Source Info: Dec2009, Vol. 106 Issue 12, p123702; Subject Term: SOLID solutions; Subject Term: SEPARATION (Technology); Subject Term: SEMICONDUCTORS; Subject Term: FLUID dynamics; Subject Term: SOLUTION (Chemistry); Subject Term: FIELD-effect transistors; Subject Term: SEMICONDUCTOR doping; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 7p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1063/1.3270404 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47244295&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, Oleg N. AU - Miracle, Daniel B. T1 - Description of the fragile behavior of glass-forming liquids with the use of experimentally accessible parameters JO - Journal of Non-Crystalline Solids JF - Journal of Non-Crystalline Solids Y1 - 2009/12/15/ VL - 355 IS - 52-54 M3 - Article SP - 2596 EP - 2603 SN - 00223093 AB - Abstract: The temperature dependence of viscosity of glass-forming liquids near the glass transition temperature Tg (at which viscosity η =1012 Pas) is given by the fragility index , which is unique for each material. Therefore, m should not depend on the type of the model functions used to describe the viscous behavior. Using this condition, we modified the three-fitting-parameter viscosity equations, i.e., Vogel–Fulcher–Tammann (VFT) and Avramov equations, into one-fitting parameter equations. Both modified equations contain the glass transition temperature Tg and fragility index m as material constants, allowing a direct comparison of the modified equations. Experimental viscosity data are required over a wide temperature range to determine the three-fitting parameters of the VFT and Avramov equations, restricting their applicability. However, the modified equations developed here provide a convenient method of modeling the temperature dependence of viscosity by using the experimentally accessible parameters Tg and m. The modified one-fitting parameter equations were used to analyze viscous behavior of a number of oxide and organic glass-forming liquids. Based on this analysis, it was concluded that the modified Avramov equation describes the experimental data better than the modified VFT equation. Taking into account that the modified VFT equation predicts infinite viscosity at a finite temperature T 0, while the modified Avramov equation predicts a continuous increase in viscosity with a decrease in temperature down to the absolute zero, the obtained results may indicate that the oxide and organic super-cooled liquids do not experience dynamic divergence when they are cooled below the glass transition temperature. Strong physical interpretations are developed for all of the parameters used in present equations to model the temperature dependence of viscosity, giving an important improvement over earlier phenomenological models. [Copyright &y& Elsevier] AB - Copyright of Journal of Non-Crystalline Solids is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUIDS KW - VISCOSITY KW - SILICATES KW - GLASS transition temperature KW - TEMPERATURE effect KW - POLYMERS KW - GLASS KW - Fragility KW - Oxide glasses KW - Polymers and organics KW - Silicates KW - Viscosity N1 - Accession Number: 45422418; Senkov, Oleg N.; Email Address: oleg.senkov@wpafb.af.mil Miracle, Daniel B. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Dec2009, Vol. 355 Issue 52-54, p2596; Subject Term: LIQUIDS; Subject Term: VISCOSITY; Subject Term: SILICATES; Subject Term: GLASS transition temperature; Subject Term: TEMPERATURE effect; Subject Term: POLYMERS; Subject Term: GLASS; Author-Supplied Keyword: Fragility; Author-Supplied Keyword: Oxide glasses; Author-Supplied Keyword: Polymers and organics; Author-Supplied Keyword: Silicates; Author-Supplied Keyword: Viscosity; NAICS/Industry Codes: 238150 Glass and Glazing Contractors; NAICS/Industry Codes: 327214 Glass manufacturing; NAICS/Industry Codes: 416340 Paint, glass and wallpaper merchant wholesalers; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jnoncrysol.2009.09.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45422418&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brillson, L.J. AU - Dong, Y. AU - Doutt, D. AU - Look, D.C. AU - Fang, Z.-Q. T1 - Massive point defect redistribution near semiconductor surfaces and interfaces and its impact on Schottky barrier formation JO - Physica B JF - Physica B Y1 - 2009/12/15/ VL - 404 IS - 23/24 M3 - Article SP - 4768 EP - 4773 SN - 09214526 AB - Abstract: Nanoscale depth-resolved cathodoluminescence spectroscopy calibrated with deep level transient spectroscopy of native point defects and capacitance–voltage measurements of free carrier densities, all at the same metal–semiconductor interface, demonstrate that native point defects can (i) increase by order-of-magnitude in densities with tens of nanometers of the semiconductor surface, (ii) alter free carrier concentrations and band profiles with the surface space charge regions, and (iii) dominate the Schottky barrier formation for metal contacts to ZnO and many other single crystal compound semiconductors. The spatial redistribution of electrically active defects within the surface space charge can be understood in terms of temperature-dependent atomic diffusion enabled by low formation energies and driven by strain and electric fields as well as metal-specific chemical reactions near room temperature, consistent with first-principles calculations of interfacial segregation and migration barriers. These results underscore the importance of native point defects in charge transport and barrier formation at semiconductor interfaces. [Copyright &y& Elsevier] AB - Copyright of Physica B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR junctions KW - SURFACES (Technology) KW - POINT defects KW - CATHODOLUMINESCENCE KW - SPECTRUM analysis KW - SCHOTTKY-barrier diodes KW - DEEP level transient spectroscopy KW - 71.55.Gs KW - 72.40.+w KW - Cathodoluminescence spectroscopy KW - Defects KW - Interfaces KW - Schottky barriers KW - Segregation N1 - Accession Number: 45218186; Brillson, L.J. 1,2,3; Email Address: brillson.1@osu.edu Dong, Y. 1 Doutt, D. 2 Look, D.C. 4,5 Fang, Z.-Q. 4; Affiliation: 1: Department of Electrical and Computer Engineering, The Ohio State University, Columbus, OH 43210, USA 2: Department of Physics, The Ohio State University, Columbus, OH 43210, USA 3: Center for Materials Research, The Ohio State University, Columbus, OH 43210, USA 4: Semiconductor Research Center, Wright State University, Dayton, OH 45435 USA 5: Air Force Research Laboratory, WPAFB, Dayton, OH 45435, USA; Source Info: Dec2009, Vol. 404 Issue 23/24, p4768; Subject Term: SEMICONDUCTOR junctions; Subject Term: SURFACES (Technology); Subject Term: POINT defects; Subject Term: CATHODOLUMINESCENCE; Subject Term: SPECTRUM analysis; Subject Term: SCHOTTKY-barrier diodes; Subject Term: DEEP level transient spectroscopy; Author-Supplied Keyword: 71.55.Gs; Author-Supplied Keyword: 72.40.+w; Author-Supplied Keyword: Cathodoluminescence spectroscopy; Author-Supplied Keyword: Defects; Author-Supplied Keyword: Interfaces; Author-Supplied Keyword: Schottky barriers; Author-Supplied Keyword: Segregation; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.physb.2009.08.151 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45218186&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Spicer, Chester W. AU - Holdren, Michael W. AU - Cowen, Kenneth A. AU - Joseph, Darrell W. AU - Satola, Jan AU - Goodwin, Bradley AU - Mayfield, Howard AU - Laskin, Alexander AU - Alexander, M. Lizabeth AU - Ortega, John V. AU - Newburn, Matthew AU - Kagann, Robert AU - Hashmonay, Ram T1 - Corrigendum to “Rapid measurement of emissions from military aircraft turbine engines by downstream extractive sampling of aircraft on the ground: Results for C-130 and F-15 aircraft” [Atm. Environ. 43 (2009) 2612–2622] JO - Atmospheric Environment JF - Atmospheric Environment Y1 - 2009/12/11/ VL - 43 IS - 38 M3 - Correction notice SP - 6120 EP - 6120 SN - 13522310 N1 - Accession Number: 45134620; Spicer, Chester W. 1; Email Address: spiceair@columbus.rr.com Holdren, Michael W. 2 Cowen, Kenneth A. 3 Joseph, Darrell W. 3 Satola, Jan 3 Goodwin, Bradley 3 Mayfield, Howard 4 Laskin, Alexander 5 Alexander, M. Lizabeth 5 Ortega, John V. 6 Newburn, Matthew 5 Kagann, Robert 7 Hashmonay, Ram 7; Affiliation: 1: SpiceAir Consulting, 2703 Mt. Holyoke Rd., Columbus, OH 43221, USA 2: Scientific Consulting, 4781 Teter Ct., Columbus, OH 43220, USA 3: Battelle, 505 King Ave., Columbus, OH 43201, USA 4: Air Force Research Laboratory, 139 Barnes Dr., Tyndall AFB, FL 32403, USA 5: Environmental Molecular Science Laboratory, Pacific Northwest National Laboratory, 902 Battelle Blvd., Richland, WA 99352, USA 6: University of Colorado, Boulder, CO 80309, USA 7: Arcadis G&M, Durham, NC 27713, USA; Source Info: Dec2009, Vol. 43 Issue 38, p6120; Number of Pages: 1p; Document Type: Correction notice L3 - 10.1016/j.atmosenv.2009.02.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45134620&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Weibin Chen AU - Don C. Abeysinghe AU - Robert L. Nelson AU - Qiwen Zhan T1 - Plasmonic Lens Made of Multiple Concentric Metallic Rings under Radially Polarized Illumination. JO - Nano Letters JF - Nano Letters Y1 - 2009/12/09/ VL - 9 IS - 12 M3 - Article SP - 4320 EP - 4325 SN - 15306984 AB - Optimal plasmonic focusing can be achieved through matching the rotational symmetry of the plasmonic lens to the polarization symmetry of a radially polarized illumination. In this letter, we report the experimental confirmation of the focusing properties and field enhancement effect of plasmonic lens made of multiple concentric annular rings using a collection mode near field scanning optical microscope. Surface plasmons excited at all azimuthal directions propagate toward the geometric center and constructively interfere at the focus to create a strongly enhanced evanescent optical “needle” field that is substantially polarized vertically to the plasmonic lens surface. The field enhancement factor can be improved through adding more rings while maintaining the plasmonic focal spot size. Strategy for optimizing the field enhancement factor is studied with both analytical and numerical methods. [ABSTRACT FROM AUTHOR] AB - Copyright of Nano Letters is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE plasmon resonance KW - POLARIZATION (Electricity) KW - LENSES KW - NUMERICAL analysis KW - SURFACES (Technology) KW - METALS N1 - Accession Number: 45684965; Weibin Chen 1 Don C. Abeysinghe 1 Robert L. Nelson 1 Qiwen Zhan 1; Affiliation: 1: Electro-Optics Graduate Program, University of Dayton, 300 College Park, Dayton Ohio 45469, Department of Electrical and Computer Engineering, University of Cincinnati, Cincinnati, Ohio 45219, and Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433; Source Info: Dec2009, Vol. 9 Issue 12, p4320; Subject Term: SURFACE plasmon resonance; Subject Term: POLARIZATION (Electricity); Subject Term: LENSES; Subject Term: NUMERICAL analysis; Subject Term: SURFACES (Technology); Subject Term: METALS; NAICS/Industry Codes: 327215 Glass Product Manufacturing Made of Purchased Glass; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45684965&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - MacSleyne, J. AU - Uchic, M.D. AU - Simmons, J.P. AU - De Graef, M. T1 - Three-dimensional analysis of secondary precipitates in René-88 DT and UMF-20 superalloys JO - Acta Materialia JF - Acta Materialia Y1 - 2009/12// VL - 57 IS - 20 M3 - Article SP - 6251 EP - 6267 SN - 13596454 AB - Abstract: Focused ion beam serial sectioning was used to study the three-dimensional morphology of secondary precipitates in two nickel-based superalloys: René-88 DT, a turbine disk alloy, and UMF-20, an experimental alloy. The precipitate morphology was reconstructed using a multi-step image-processing approach, including registration, intensity corrections, segmentation and segmentation cleanup. A total of 260 dendritic precipitates were obtained for the René-88 DT alloy, and 477 cuboidal precipitates in the UMF-20 alloy. The shapes of these precipitates were analyzed by means of moment invariants. The cuboidal precipitates in UMF-20 are well described by an analytical superellipsoid model. The morphological evolution of the dendritic precipitates in René-88 DT is analyzed by combining the affine moment invariant with the dimensionless shape quotient. This approach is promising as an objective tool for the description of complex precipitate shapes. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT resistant alloys KW - NICKEL alloys KW - MICROSTRUCTURE KW - PRECIPITATION (Chemistry) KW - FOCUSED ion beams KW - Microstructure KW - Moment invariants KW - Nickel alloys KW - Precipitate shape KW - Serial sectioning N1 - Accession Number: 44942959; MacSleyne, J. 1; Email Address: jmacsley@gmail.com Uchic, M.D. 2; Email Address: Michael.Uchic@wpafb.af.mil Simmons, J.P. 2; Email Address: Jeff.Simmons@wpafb.af.mil De Graef, M. 1; Email Address: degraef@cmu.edu; Affiliation: 1: Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA 2: Materials & Manufacturing Directorate, Air Force Research Laboratory, AFRL/RXLMD, 2230 10th Street, Wright Patterson AFB, OH 45433, USA; Source Info: Dec2009, Vol. 57 Issue 20, p6251; Subject Term: HEAT resistant alloys; Subject Term: NICKEL alloys; Subject Term: MICROSTRUCTURE; Subject Term: PRECIPITATION (Chemistry); Subject Term: FOCUSED ion beams; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Moment invariants; Author-Supplied Keyword: Nickel alloys; Author-Supplied Keyword: Precipitate shape; Author-Supplied Keyword: Serial sectioning; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.actamat.2009.08.053 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44942959&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Murray, John Stephen T1 - Public Health Emergencies and Children: New guidelines offer an opportunity to be better prepared. JO - American Journal of Nursing JF - American Journal of Nursing Y1 - 2009/12// VL - 109 IS - 12 M3 - Article SP - 28 EP - 31 SN - 0002936X AB - The article describes guidelines issued by the U.S. Agency for Healthcare Research and Quality (AHRQ) addressing the needs of children during a public health emergency or national disaster. Children are at a greater risk for physical injury during a disaster as a result of their anatomical and physiological differences. They are also more vulnerable to psychosocial damage after a disaster due to cognitive and developmental factors which make it difficult for them to understand what is occurring. KW - PUBLIC health -- United States KW - CHILDREN -- Health KW - GOVERNMENT policy KW - PEDIATRIC emergencies KW - NATURAL disasters KW - EMERGENCY management KW - PHYSIOLOGICAL aspects KW - UNITED States KW - UNITED States. Agency for Healthcare Research & Quality N1 - Accession Number: 46794610; Murray, John Stephen 1; Email Address: mwchaffee@aol.com; Affiliation: 1: Colonel, The United States Air Force, The Director of Education, Training, Research, The Joint Task Force National Capital Region Medical, Bethesda, MD.; Source Info: Dec2009, Vol. 109 Issue 12, p28; Subject Term: PUBLIC health -- United States; Subject Term: CHILDREN -- Health; Subject Term: GOVERNMENT policy; Subject Term: PEDIATRIC emergencies; Subject Term: NATURAL disasters; Subject Term: EMERGENCY management; Subject Term: PHYSIOLOGICAL aspects; Subject Term: UNITED States; Company/Entity: UNITED States. Agency for Healthcare Research & Quality; NAICS/Industry Codes: 624230 Emergency and Other Relief Services; NAICS/Industry Codes: 911290 Other federal protective services; NAICS/Industry Codes: 912190 Other provincial protective services; NAICS/Industry Codes: 913190 Other municipal protective services; NAICS/Industry Codes: 922190 Other Justice, Public Order, and Safety Activities; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=46794610&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eastridge, Brian J. AU - Costanzo, George AU - Jenkins, Donald AU - Spott, Mary Ann AU - Wade, Charles AU - Greydanus, Dominique AU - Flaherty, Stephen AU - Rappold, Joseph AU - Dunne, James AU - Holcomb, John B. AU - Blackbourne, Lorne H. T1 - Impact of joint theater trauma system initiatives on battlefield injury outcomes JO - American Journal of Surgery JF - American Journal of Surgery Y1 - 2009/12// VL - 198 IS - 6 M3 - Article SP - 852 EP - 857 SN - 00029610 AB - Abstract: Introduction: The US military forces developed and implemented the Joint Theater Trauma System (JTTS) and Joint Theater Trauma Registry (JTTR) using US civilian trauma system models with the intent of improving outcomes after battlefield injury. Methods: The purpose of this analysis was to elaborate the impact of the JTTS. To quantify these achievements, the JTTR captured mechanism, acute physiology, diagnostic, therapeutic, and outcome data on 23,250 injured patients admitted to deployed US military treatment facilities from July 2003 through July 2008 for analysis. Comparative analysis to civilian trauma systems was done using the National Trauma Data Bank (NTDB). Results: In contrast to civilian trauma systems with an 11.1% rate of penetrating injury, 68.3% of battlefield wounds were by penetrating mechanism. In the analyzed cohort, 23.3% of all patients had an Injury Severe Score (ISS) ≥16, which is similar to the civilian rate of 22.4%. In the military injury population, 66% of injuries were combat-related. In addition, in the military injury group, 21.8% had metabolic evidence of shock with a base deficit ≥5, 29.8% of patients required blood transfusion, and 6.4% of the total population of combat casualties required massive transfusion (>10 U red blood cells/24 hours). With this complex and severely injured population of battlefield injuries, the JTTS elements were used to recognize and remedy more than 60 trauma system issues requiring leadership and advocacy, education, research, and alterations in clinical care. Of particular importance to the trauma system was the implementation and tracking of performance improvement indicators and the dissemination of 27 evidence-based clinical practice guidelines (CPGs). In particular, the damage control resuscitation guideline was associated with a decrease in mortality in the massively transfused from 32% pre-CPG to 21% post-CPG. As evidence of the effectiveness of the JTTS, a mortality rate of 5.2% after battlefield hospital admission is comparable to a case fatality rate of 4.3% reported in an age-matched cohort from the NTDB. Conclusions: JTTS initiatives contributed to improved survival after battlefield injury. The JTTS has set the standard of trauma care for the modern battlefield using contemporary systems-based methodologies. [Copyright &y& Elsevier] AB - Copyright of American Journal of Surgery is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY personnel -- Wounds & injuries KW - BLOOD transfusion KW - MEDICAL care KW - MORTALITY KW - MILITARY hospitals KW - ARMED Forces KW - UNITED States KW - Combat KW - Injury KW - Military KW - Trauma KW - Trauma system KW - War N1 - Accession Number: 45641843; Eastridge, Brian J. 1; Email Address: brian.eastridge@amedd.army.mil Costanzo, George 2 Jenkins, Donald 2 Spott, Mary Ann 1 Wade, Charles 1 Greydanus, Dominique 1 Flaherty, Stephen 1 Rappold, Joseph 3 Dunne, James 3 Holcomb, John B. 1 Blackbourne, Lorne H. 1; Affiliation: 1: United States Army Institute of Surgical Research, Ft. Sam Houston, TX, USA 2: United States Air Force Willford Hall Medical Center, San Antonio, TX, USA 3: Bethesda Naval Medical Center, Bethesda, MD, USA; Source Info: Dec2009, Vol. 198 Issue 6, p852; Subject Term: MILITARY personnel -- Wounds & injuries; Subject Term: BLOOD transfusion; Subject Term: MEDICAL care; Subject Term: MORTALITY; Subject Term: MILITARY hospitals; Subject Term: ARMED Forces; Subject Term: UNITED States; Author-Supplied Keyword: Combat; Author-Supplied Keyword: Injury; Author-Supplied Keyword: Military; Author-Supplied Keyword: Trauma; Author-Supplied Keyword: Trauma system; Author-Supplied Keyword: War; NAICS/Industry Codes: 622111 General (except paediatric) hospitals; NAICS/Industry Codes: 928110 National Security; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.amjsurg.2009.04.029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45641843&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - James Jauchem AU - Ronald Seaman AU - Curtis Klages T1 - Physiological effects of the TASER® C2 conducted energy weapon. JO - Forensic Science, Medicine & Pathology JF - Forensic Science, Medicine & Pathology Y1 - 2009/12// VL - 5 IS - 4 M3 - Article SP - 330 EP - 330 SN - 1547769X N1 - Accession Number: 47376744; James Jauchem 1 Ronald Seaman 2 Curtis Klages 1; Affiliation: 1: US Air Force Research Laboratory, AFRL/RHDR Directed Energy Bio-Effects Division, 711th Human Performance Wing 8262 Hawks Road San Antonio TX 78235 USA 2: A General Dynamics Company Advanced Information Services 3276 Reliance Loop San Antonio TX 78235 USA; Source Info: Dec2009, Vol. 5 Issue 4, p330; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47376744&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tripp, Lloyd D. AU - Warm, Joel S. AU - Matthews, Gerald AU - Chiu, Peter Y. AU - Bracken, R. Bruce T1 - On Tracking the Course of Cerebral Oxygen Saturation and Pilot Performance During Gravity-Induced Loss of Consciousness. JO - Human Factors JF - Human Factors Y1 - 2009/12// VL - 51 IS - 6 M3 - Article SP - 775 EP - 784 SN - 00187208 AB - Objective: The aim of this study was to track the course of cerebral tissue oxygen saturation (rSO2) and pilot performance during an episode of gravity-induced loss of consciousness (GLOC). Background: GLOC, a major problem facing pilots of high-performance aircraft, is brought about by a sudden reduction in rSO2 as a result of increased +Gz force. It consists of 24 s of complete functional impairment followed by a prolonged period of performance recovery. This study tested the hypothesis that delayed recovery in GLOC is caused by a slow return of rSO2 following removal of the g-force that induced the episode. Method: GLOC was induced in U.S. Air Force personnel via a centrifuge with math and tracking tasks emulating flight performance. A near-infrared spectroscopy unit provided the rSO2 measure. Results: Declines in rSO2 from baseline pinpointed when pilots would cease active flight control and when GLOC would set in. Counter to expectation, rSO2 returned to baseline levels shortly after the centrifuge came to a complete stop following GLOC onset. Nevertheless, performance deficits continued for 49.45 s thereafter. Conclusion: The prolonged performance recovery time in GLOC cannot be attributed to delays in the return of rSO2. This finding explains why previous ergonomic efforts to shorten the duration of GLOC episodes by increasing the rate of return of rSO2 have not been fruitful. Evidently, another approach is needed. Application: Such an approach might use the close linkage between loss of rSO2, performance deterioration, and GLOC onset to develop a warning system that would permit pilots to take effective action to avoid GLOC incapacitation. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PILOTS & pilotage KW - AIR forces KW - FLIGHT crews KW - LOSS of consciousness KW - INFRARED spectroscopy KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 48870494; Tripp, Lloyd D. 1; Email Address: lloyd.tripp@wpafb.af.mil Warm, Joel S. 1 Matthews, Gerald 2 Chiu, Peter Y. 2 Bracken, R. Bruce 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson, Air Force Base, Ohio 2: University of Cincinnati, Ohio; Source Info: Dec2009, Vol. 51 Issue 6, p775; Subject Term: PILOTS & pilotage; Subject Term: AIR forces; Subject Term: FLIGHT crews; Subject Term: LOSS of consciousness; Subject Term: INFRARED spectroscopy; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 488332 Ship piloting services; NAICS/Industry Codes: 488330 Navigational Services to Shipping; NAICS/Industry Codes: 928110 National Security; Number of Pages: 10p; Document Type: Article L3 - 10.1177/0018720809359631 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48870494&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Ming AU - Batalama, Stella N. AU - Pados, Dimitris A. AU - Matyjas, John D. T1 - Minimum Total-Squared-Correlation Quaternary Signature Sets: New Bounds and Optimal Designs. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2009/12// VL - 57 IS - 12 M3 - Article SP - 3662 EP - 3671 SN - 00906778 AB - We derive new bounds on the total squared correlation (TSC) of quaternary (quadriphase) signature/sequence sets for all lengths L and set sizes K. Then, for all K, L, we design minimum-TSC optimal sets that meet the new bounds with equality. Direct numerical comparison with the TSC value of the recently obtained optimal binary sets shows under what K, L realizations gains are materialized by moving from the binary to the quaternary code-division multiplexing alphabet. On the other hand, comparison with the Welch TSC value for real/complex-field sets shows that, arguably, not much is to be gained by raising the alphabet size above four for any K, L. The sum-capacity (as well as the maximum squared correlation and total asymptotic efficiency) of minimum TSC quaternary sets is also evaluated in closed-form and contrasted against the sum capacity of minimum-TSC optimal binary and real/complex sets. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUMERICAL analysis KW - MULTIPLEXING (Telecommunication) KW - BINARY control systems KW - QUATERNARY forms KW - SET theory KW - Code-division multiplexing KW - multiuser communications KW - quadriphase symbols KW - quaternary alphabet KW - sequences KW - sum capacity KW - Welch bound N1 - Accession Number: 47489324; Li, Ming 1; Email Address: mingli@eng.buffalo.edu Batalama, Stella N. 1; Email Address: batalama@eng.buffalo.edu Pados, Dimitris A. 1; Email Address: pados@eng.buffalo.edu Matyjas, John D. 2; Email Address: John.Matyjas@rl.af.mil; Affiliation: 1: Department of Electrical Engineering, State University of New York at Buffalo, Buffalo, NY 14260, USA 2: Air Force Research Laboratory/RIGE, Rome, NY 13441, USA; Source Info: Dec2009, Vol. 57 Issue 12, p3662; Subject Term: NUMERICAL analysis; Subject Term: MULTIPLEXING (Telecommunication); Subject Term: BINARY control systems; Subject Term: QUATERNARY forms; Subject Term: SET theory; Author-Supplied Keyword: Code-division multiplexing; Author-Supplied Keyword: multiuser communications; Author-Supplied Keyword: quadriphase symbols; Author-Supplied Keyword: quaternary alphabet; Author-Supplied Keyword: sequences; Author-Supplied Keyword: sum capacity; Author-Supplied Keyword: Welch bound; Number of Pages: 10p; Illustrations: 4 Black and White Photographs, 7 Graphs; Document Type: Article L3 - 10.1109/TCOMM.2009.12.080589 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47489324&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chakravarthy, Vasu AU - Li, Xue AU - Wu, Zhiqiang AU - Temple, Michael A. AU - Garber, Fred AU - Kannan, Rajgopal AU - Vasilakos, Athanasios T1 - Novel Overlay/Underlay Cognitive Radio Waveforms Using SD-SMSE Framework to Enhance Spectrum Efficiency Part I: Theoretical Framework and Analysis in AWGN Channel. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2009/12// VL - 57 IS - 12 M3 - Article SP - 3794 EP - 3804 SN - 00906778 AB - Abstract-Recent studies suggest that spectrum congestion is primarily due to inefficient spectrum usage rather than spectrum availability. Dynamic Spectrum Access (DSA) and Cognitive Radio (CR) are two techniques being considered to improve spectrum efficiency and utilization. The advent of CR has created a paradigm shift in wireless communications and instigated a change in FCC policy towards spectrum regulations. Within the hierarchical DSA model, spectrum overlay and underlay techniques are employed to enable primary and secondary users to coexist while improving overall spectrum efficiency. As employed here, spectrum overlay exploits unused (white) spectral regions while spectrum underlay exploits underused (gray) spectral regions. In general, underlay approaches use more spectrum than overlay approaches and operate below the noise floor of primary users. Spectrally modulated, spectrally encoded (SMSE) signals, to include Orthogonal Frequency Domain Multiplexing (OFDM) and Multi-Carrier Code Division Multiple Access (MC-CDMA), are candidate CR waveforms. The SMSE structure supports and is well suited for CR-based Software Defined Radio (SDR) applications. This paper provides a general soft decision SMSE (SD-SMSE) framework that extends the original SMSE framework to achieve synergistic CR benefits of overlay and underlay techniques. This extended framework provides considerable flexibility to design overlay, underlay and hybrid overlay/underlay waveforms that are scenario dependent. Overlay/underlay framework flexibility is demonstrated herein for a family of SMSE signals, including OFDM and MC-CDMA. Analytic derivation of CR error probability for overlay and underlay applications is presented. Simulated performance analysis of overlay, underlay and hybrid overlay/underlay waveforms is also presented and benefits discussed, to include improved spectrum efficiency and channel capacity maximization. Performance analysis of overlay/underlay CR waveform in fading channels will be discussed in Part II of the paper. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO waves KW - SIGNAL processing KW - SPECTRUM allocation KW - RANDOM noise theory KW - RADIO (Medium) KW - Cognitive radio KW - dynamic spectrum access KW - overlay waveform KW - spectrum efficiency KW - underlay waveform N1 - Accession Number: 47489337; Chakravarthy, Vasu 1; Email Address: Vasu.Chakravarthy@wpafb.af.mil Li, Xue 2; Email Address: li.68@wright.edu Wu, Zhiqiang 2; Email Address: Zhiqiang.Wu@wright.edu Temple, Michael A. 3; Email Address: michael.temple@afit.edu Garber, Fred 2; Email Address: Fred.Garber@wright.edu Kannan, Rajgopal 4; Email Address: rkannan@bit.csc.lsu.edu Vasilakos, Athanasios 5; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 2: Wright State University 3: Air Force Institute of Technology 4: Louisiana State University 5: University of Western Macedonia, Greece; Source Info: Dec2009, Vol. 57 Issue 12, p3794; Subject Term: RADIO waves; Subject Term: SIGNAL processing; Subject Term: SPECTRUM allocation; Subject Term: RANDOM noise theory; Subject Term: RADIO (Medium); Author-Supplied Keyword: Cognitive radio; Author-Supplied Keyword: dynamic spectrum access; Author-Supplied Keyword: overlay waveform; Author-Supplied Keyword: spectrum efficiency; Author-Supplied Keyword: underlay waveform; NAICS/Industry Codes: 515111 Radio Networks; Number of Pages: 11p; Illustrations: 7 Black and White Photographs, 10 Graphs; Document Type: Article L3 - 10.1109/TCOMM.2009.12.080400 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47489337&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nong Ye AU - Xiaoyun Xu AU - Hurley, Patrick T1 - QoS protocols for end-to-end delay guarantee of instantaneous jobs on computer networks. JO - Information Knowledge Systems Management JF - Information Knowledge Systems Management Y1 - 2009/12// VL - 7 IS - 4 M3 - Article SP - 429 EP - 451 PB - IOS Press SN - 13891995 AB - QoS (Quality of Service) guarantee is highly desirable for many service-oriented computer and network applications on the Internet. This paper focuses on the timeliness aspect of QoS, especially the end-to-end delay guarantee. Resource reSerVation Protocol (RSVP) has been proposed based on the Integrated Service (InteServ) model to provide the QoS guarantee through bandwidth reservation that is applicable to jobs with continuous data flows over a period of time, such as those for tele-conferencing, voice over IP, video and audio streaming applications. There are other applications such as emails generating one-time, instantaneous jobs that cannot be characterized by the flow rate and peak rate for bandwidth reservation. Hence, RSVP is not applicable to instantaneous jobs. This paper presents QoS protocols, called Instantaneous RSVP (I-RSVP) and Stable Instantaneous Resource reSerVation Protocol (SI-RSVP), which are developed for providing the end-to-end delay guarantee of instantaneous jobs. The performance of I-RSVP and SI-RSVP are tested and compared with that of the best effort service model using both small and large scale network simulations. [ABSTRACT FROM AUTHOR] AB - Copyright of Information Knowledge Systems Management is the property of IOS Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER networks KW - COMPUTER network architectures KW - INTERNET protocols KW - BANDWIDTHS KW - COMPUTER simulation KW - QUALITY of service KW - end-to-end delay KW - network simulation KW - Quality of Service KW - reservation and service protocol N1 - Accession Number: 45726696; Nong Ye 1; Email Address: nongye@asu.edu Xiaoyun Xu 1; Email Address: xiaoyun.xu@asu.edu Hurley, Patrick 2; Email Address: Patrick.Hurley@rl.af.mil; Affiliation: 1: Department of Industrial Engineering, Arizona State University, PO Box 875906, Tempe, AZ 85287-5906, USA 2: Air Force Research Laboratory/RIGA, 525 Brooks Road, Rome, NY 13441-4505, USA; Source Info: 2008, Vol. 7 Issue 4, p429; Subject Term: COMPUTER networks; Subject Term: COMPUTER network architectures; Subject Term: INTERNET protocols; Subject Term: BANDWIDTHS; Subject Term: COMPUTER simulation; Subject Term: QUALITY of service; Author-Supplied Keyword: end-to-end delay; Author-Supplied Keyword: network simulation; Author-Supplied Keyword: Quality of Service; Author-Supplied Keyword: reservation and service protocol; NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; Number of Pages: 23p; Illustrations: 6 Diagrams, 22 Charts, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45726696&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, J.-H. AU - Wu, C.-Y. AU - Lee, C. N. AU - Anwar, D. AU - Wysocki, K. M. AU - Lundgren, D. A. AU - Farrah, S. AU - Wander, J. AU - Heimbuch, B. K. T1 - Assessment of iodine-treated filter media for removal and inactivation of MS2 bacteriophage aerosols. JO - Journal of Applied Microbiology JF - Journal of Applied Microbiology Y1 - 2009/12// VL - 107 IS - 6 M3 - Article SP - 1912 EP - 1923 PB - Wiley-Blackwell SN - 13645072 AB - Aims: To investigate the performance of an iodine-releasing filter medium for use as a protective device against airborne pathogens. Methods and Results: The filter’s physical and viable removal efficiencies (VRE) were investigated with challenges of MS2 bacteriophage aerosols, and the infectivity of MS2 collected on the filter was analysed. To test a proposed inactivation mechanism, media containing thiosulfate or bovine serum albumin (BSA) were put in impingers to quench and consume I2 released from the filter. In direct plating experiments, treated filters presented significantly higher VREs than did untreated filters; however, collection in excess BSA decreased VRE by half and in thiosulfate the apparent VRE decreased drastically. No significant difference in infectivity of retained viruses on treated and untreated filters was observed at the same environmental condition. Conclusions: Evidence presented herein for competition by dissolved I2 in infectivity assays supports a mechanism of induced displacement and capture of I2. It also requires that dissociation of iodine from the filter and capture of iodine by MS2 aerosols as they pass through the filter be factored in the design of the assessment methodology. The filter’s strong retention capability minimizes reaerosolization but also makes it difficult to discriminate the antimicrobial effect at the surface. Significance and Impact of the Study: This study shows the direct plating assay method to be sensitive to interference by iodine-releasing materials. This requires reevaluation of earlier reports of VRE measurements. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Microbiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PATHOGENIC microorganisms KW - BACTERIOPHAGES KW - IODINE KW - AEROSOLS (Sprays) KW - SERUM albumin KW - MICROBIOLOGICAL assay KW - BLOOD proteins KW - HALOGENS KW - VIRUSES KW - antimicrobial KW - biocidal filter KW - inactivation KW - iodine KW - MS2 KW - removal efficiency N1 - Accession Number: 45131812; Lee, J.-H. 1 Wu, C.-Y. 1; Email Address: cywu@ufl.edu Lee, C. N. 2 Anwar, D. 2 Wysocki, K. M. 3 Lundgren, D. A. 1 Farrah, S. 4 Wander, J. 5 Heimbuch, B. K. 5; Affiliation: 1: Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL, USA. 2: Department of Chemical Engineering, University of Florida, Gainesville, FL, USA. 3: Dow Latex Technical Center, Midland, MI, USA. 4: Department of Microbiology and Cell Science, University of Florida, Gainesville, FL, USA. 5: Airbase Technology Division, Air Force Research Laboratory, Tyndall Air Force Base, FL, USA.; Source Info: Dec2009, Vol. 107 Issue 6, p1912; Subject Term: PATHOGENIC microorganisms; Subject Term: BACTERIOPHAGES; Subject Term: IODINE; Subject Term: AEROSOLS (Sprays); Subject Term: SERUM albumin; Subject Term: MICROBIOLOGICAL assay; Subject Term: BLOOD proteins; Subject Term: HALOGENS; Subject Term: VIRUSES; Author-Supplied Keyword: antimicrobial; Author-Supplied Keyword: biocidal filter; Author-Supplied Keyword: inactivation; Author-Supplied Keyword: iodine; Author-Supplied Keyword: MS2; Author-Supplied Keyword: removal efficiency; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 12p; Illustrations: 2 Diagrams, 4 Charts, 2 Graphs; Document Type: Article L3 - 10.1111/j.1365-2672.2009.04375.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45131812&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kepko, L. AU - Spence, H. AU - Smart, D.F. AU - Shea, M.A. T1 - Interhemispheric observations of impulsive nitrate enhancements associated with the four large ground-level solar cosmic ray events (1940–1950) JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2009/12// VL - 71 IS - 17/18 M3 - Article SP - 1840 EP - 1845 SN - 13646826 AB - Abstract: We present a compelling similarity of impulsive nitrate enhancements observed in polar ice from the northern and southern hemispheres. This analysis concentrates on the period 1940–1950, during which time the first four recorded solar cosmic ray ground-level enhancements (GLEs) occurred. GLEs are strong solar proton events. We show that large and sudden enhancements in the nitrate records from both hemispheres were observed within weeks following the recorded solar cosmic ray ground-level event. The observation of impulsive nitrate enhancements simultaneously in both hemispheres shortly after a large fluence solar proton event is strong evidence in support of a causal connection and argues strongly for rapid transport of atmospheric nitrates generated through the polar atmosphere by energetic solar proton events. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR cosmic rays KW - SOLAR flares KW - ICE cores KW - NITRATES KW - PROTON flares KW - NORTHERN Hemisphere KW - SOUTHERN Hemisphere KW - GLE KW - Ice cores KW - Nitrates KW - Solar cosmic rays KW - Solar flares KW - Solar proton events N1 - Accession Number: 45220191; Kepko, L. 1 Spence, H. 1; Email Address: spence@bu.edu Smart, D.F. 2 Shea, M.A. 2; Affiliation: 1: Center for Space Physics, Boston University, 725 Commonwealth Avenue, Boston, MA 01945, USA 2: Emeritus at Air Force Research Laboratory (VSBX), Hanscom AFB, Bedford, MA 01731, USA; Source Info: Dec2009, Vol. 71 Issue 17/18, p1840; Subject Term: SOLAR cosmic rays; Subject Term: SOLAR flares; Subject Term: ICE cores; Subject Term: NITRATES; Subject Term: PROTON flares; Subject Term: NORTHERN Hemisphere; Subject Term: SOUTHERN Hemisphere; Author-Supplied Keyword: GLE; Author-Supplied Keyword: Ice cores; Author-Supplied Keyword: Nitrates; Author-Supplied Keyword: Solar cosmic rays; Author-Supplied Keyword: Solar flares; Author-Supplied Keyword: Solar proton events; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jastp.2009.07.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45220191&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kosch, M.J. AU - Gustavsson, B. AU - Heinselman, C. AU - Pedersen, T. AU - Rietveld, M.T. AU - Spaleta, J. AU - Wong, A. AU - Wang, W. AU - Mutiso, C. AU - Bristow, B. AU - Hughes, J. T1 - First incoherent scatter radar observations of ionospheric heating on the second electron gyro-harmonic JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2009/12// VL - 71 IS - 17/18 M3 - Article SP - 1959 EP - 1966 SN - 13646826 AB - Abstract: We report first results from a unique experiment performed at the HIPAS ionospheric modification facility in conjunction with the Poker Flat incoherent scatter radar in Alaska. High-power radio waves at 2.85MHz, which corresponds to the second electron gyro-harmonic at ~245km altitude, were transmitted into the nighttime ionosphere. Clear evidence of F-region ionospheric electron temperature enhancements were found, for the first time at this pump frequency, maximizing when the pump frequency is close to the second gyro-harmonic and double resonance. This is consistent with previous pump-enhanced artificial optical observations. We estimate the plasma heating efficiency to be approximately double that for higher pump frequencies. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INCOHERENT scatter radar KW - IONOSPHERE KW - HEATING KW - RADIO waves KW - F region KW - ELECTRON temperature KW - ELECTRON nuclear double resonance KW - ALASKA KW - Active experiments KW - Auroral ionosphere N1 - Accession Number: 45220204; Kosch, M.J. 1; Email Address: m.kosch@lancaster.ac.uk Gustavsson, B. 2 Heinselman, C. 3 Pedersen, T. 4 Rietveld, M.T. 5 Spaleta, J. 6 Wong, A. 7 Wang, W. 7 Mutiso, C. 8 Bristow, B. 6 Hughes, J. 8; Affiliation: 1: Communication Systems, Lancaster University, Lancaster LA1 4WA, UK 2: Department of Physics and Technology, University of Tromsø, N-9037 Tromsø, Norway 3: Stanford Research Institute International, Menlo Park, CA 94025, USA 4: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA 5: EISCAT Scientific Association, Ramfjordmoen, Ramfjordbotn N-9027, Norway 6: Geophysical Institute, University of Alaska, Fairbanks, AK 99775, USA 7: HIPAS Observatory, Two Rivers, AK 99716, USA 8: Physical Science Dept., Embry-Riddle Aeronautical University, FL 32114, USA; Source Info: Dec2009, Vol. 71 Issue 17/18, p1959; Subject Term: INCOHERENT scatter radar; Subject Term: IONOSPHERE; Subject Term: HEATING; Subject Term: RADIO waves; Subject Term: F region; Subject Term: ELECTRON temperature; Subject Term: ELECTRON nuclear double resonance; Subject Term: ALASKA; Author-Supplied Keyword: Active experiments; Author-Supplied Keyword: Auroral ionosphere; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jastp.2009.08.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45220204&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tipton Jr., Joseph B. AU - Kihm, Kenneth D. AU - Pratt, David M. T1 - Modeling Alkaline Liquid Metal (Na) Evaporating Thin Films Using Both Retarded Dispersion and Electronic Force Components. JO - Journal of Heat Transfer JF - Journal of Heat Transfer Y1 - 2009/12// VL - 131 IS - 12 M3 - Article SP - 16 EP - 16 SN - 00221481 AB - A new thin-film evaporation model is presented that captures the unsimplified dispersion force along with an electronic disjoining pressure component that is unique to liquid metals. The resulting nonlinear fourth-order ordinary differential equation (ODE) is solved using implicit orthogonal collocation along with the Levenberg-Marquardt method. The electronic component of the disjoining pressure should be considered when modeling liquid metal extended meniscus evaporation for a wide range of work function boundary values, which represent physical properties of different liquid metals. For liquid sodium, as an example test material, variation in the work function produces order-of-magnitude differences in the film thickness and evaporation profile. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Heat Transfer is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - LIQUID metals KW - DIFFERENTIAL equations KW - EVAPORATION (Chemistry) KW - SURFACES (Technology) KW - evaporation KW - liquid films KW - liquid metals KW - metallic thin films KW - nonlinear differential equations KW - sodium KW - work function N1 - Accession Number: 48424139; Tipton Jr., Joseph B. 1 Kihm, Kenneth D. 1 Pratt, David M. 2; Affiliation: 1: Department of Mechanical, Aerospace and Biomedical Engineering, University of Tennessee, Knoxville, TN 37996-2210 2: Structures Division, Air Vehicles Directorate, United States Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7542; Source Info: Dec2009, Vol. 131 Issue 12, p16; Subject Term: THIN films; Subject Term: LIQUID metals; Subject Term: DIFFERENTIAL equations; Subject Term: EVAPORATION (Chemistry); Subject Term: SURFACES (Technology); Author-Supplied Keyword: evaporation; Author-Supplied Keyword: liquid films; Author-Supplied Keyword: liquid metals; Author-Supplied Keyword: metallic thin films; Author-Supplied Keyword: nonlinear differential equations; Author-Supplied Keyword: sodium; Author-Supplied Keyword: work function; Number of Pages: 1p; Document Type: Article L3 - 10.1115/1.4000022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48424139&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Okulicz, Jason F. AU - Marconi, Vincent C. AU - Landrum, Michael L. AU - Wegner, Scott AU - Weintrob, Amy AU - Ganesan, Anuradha AU - Hale, Braden AU - Crum-Cianflone, Nancy AU - Delmar, Judith AU - Barthel, Vincent AU - Quinnan, Gerald AU - Agan, Brian K. AU - Dolan, Matthew J. T1 - Clinical Outcomes of Elite Controllers, Viremic Controllers, and Long-Term Nonprogressors in the US Department of Defense HIV Natural History Study. JO - Journal of Infectious Diseases JF - Journal of Infectious Diseases Y1 - 2009/12//12/1/2009 VL - 200 IS - 11 M3 - Article SP - 1714 EP - 1723 SN - 00221899 AB - Durable control of human immunodeficiency virus (HIV) replication and lack of disease progression in the absence of antiretroviral therapy were studied in a military cohort of 4586 subjects. We examined groups of elite controllers (ie, subjects with plasma HIV RNA levels of <50 copies/mL; prevalence, 0.55% [95% confidence interval {CI}, 0.35%-0.80%]), viremic controllers (ie, subjects with plasma HIV RNA levels of 50-2000 copies/ mL; prevalence, 3.34% [95% CI, 2.83%-3.91%]), and subjects with a lack of disease progression (ie, long-term nonprogressors [LTNPs]) through 7 years of follow-up (LTNP7s; prevalence, 3.32% [95% CI, 2.70%-4.01%]) or 10 years of follow-up (LTNP10s; prevalence, 2.04% [95% CI, 1.52%-2.68%]). For elite and viremic controllers, spontaneous virologic control was established early and was typically observed when the initial viral load measurement was obtained within 1 year of estimated seroconversion. Elite controllers had favorable time to development of AIDS ( ), a P=.048 CD4 cell count of 350 cells/μL (P=.009), and more-stable CD4 cell trends, compared with viremic controllers. LTNPs defined by 10-year versus 7-year criteria had a longer survival time (P=.001), even after adjustment for differing periods of invulnerability (P=.042). Definitions of controllers and LTNPs describe distinct populations whose differing clinical outcomes improve with the stringency of criteria, underscoring the need for comparability between study populations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Infectious Diseases is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CLINICAL trials KW - HIV (Viruses) KW - VIRAL replication KW - DISEASE progression KW - ANTIRETROVIRAL agents KW - CONFIDENCE intervals KW - COHORT analysis KW - SEROCONVERSION KW - AIDS (Disease) KW - MEDICAL research N1 - Accession Number: 45566196; Okulicz, Jason F. 1,2; Email Address: Jason.okulicz@amedd.army.mil Marconi, Vincent C. 1,2 Landrum, Michael L. 1,2 Wegner, Scott 1 Weintrob, Amy 1,3 Ganesan, Anuradha 1,4 Hale, Braden 1,5 Crum-Cianflone, Nancy 1,5 Delmar, Judith 2 Barthel, Vincent 1,6 Quinnan, Gerald 1 Agan, Brian K. 1 Dolan, Matthew J. 2,7; Affiliation: 1: Infectious Disease Clinical Research Program, Uniformed Services University of the Health Sciences 2: Infectious Disease Service, San Antonio Military Medical Center, Brooke Army Medical Center, Fort Sam Houston 3: Infectious Disease Clinic, Walter Reed Army Medical Center, Washington, DC 4: Infectious Disease Clinic, National Naval Medical Center, Bethesda, Maryland 5: Infectious Disease Clinic, Naval Medical Center San Diego, San Diego, California 6: Infectious Disease Clinic, Naval Medical Center Portsmouth, Portsmouth, Virginia 7: Henry M. Jackson Foundation, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas; Source Info: 12/1/2009, Vol. 200 Issue 11, p1714; Subject Term: CLINICAL trials; Subject Term: HIV (Viruses); Subject Term: VIRAL replication; Subject Term: DISEASE progression; Subject Term: ANTIRETROVIRAL agents; Subject Term: CONFIDENCE intervals; Subject Term: COHORT analysis; Subject Term: SEROCONVERSION; Subject Term: AIDS (Disease); Subject Term: MEDICAL research; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 10p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1086/646609 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45566196&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lessa, Fernanda C. AU - Gould, Philip L. AU - Pascoe, Neil AU - Erdman, Dean D. AU - Xiaoyan Lu AU - Bunning, Michel L. AU - Marconi, Vincent C. AU - Lott, Lisa AU - Widdowson, Marc-Alain AU - Anderson, Larry J. AU - Srinivasan, Arjun T1 - Health Care Transmission of a Newly Emergent Adenovirus Serotype in Health Care Personnel at a Military Hospital in Texas, 2007. JO - Journal of Infectious Diseases JF - Journal of Infectious Diseases Y1 - 2009/12//12/1/2009 VL - 200 IS - 11 M3 - Article SP - 1759 EP - 1765 SN - 00221899 AB - Background. Adenoviruses can cause outbreaks of febrile respiratory illness in military trainees, but until 2007, adenovirus serotype 14 (Ad14) was never associated with such outbreaks. From April through June 2007, 15 trainees at one base were hospitalized for pneumonia due to Ad14. Subsequent reports of febrile respiratory illness among health care personnel suggested nosocomial transmission. Methods. Health care personnel participants completed a questionnaire and provided blood and nasal wash specimens for Ad14 diagnostic testing. We defined a confirmed case of Ad14 infection as one with titers ⩾1:80 or nasal wash specimens positive for Ad14 by polymerase chain reaction, whereas a possible case was defined by titers of 1:20 or 1:40. We also collected environmental samples. Results. Among 218 tested health care personnel, 35 (16%) had titers ⩾1:20; of these, 7 had possible cases and 28 had confirmed cases of infection. Confirmed case patients were more likely to report febrile respiratory illness (57% vs 11%; P < .001) and to have had direct contact with patients with Ad14 infection (82% vs 62%; P=.04). Of the 23 confirmed case patients with direct contact with Ad14-infected patients, 52% reported that patients were not in contact and droplet precautions at the time of exposure. Ad14 was recovered from several hospital surfaces. Conclusion. Our findings of possible nosocomial transmission of Ad14 highlight the need to reinforce infection control guidelines. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Infectious Diseases is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADENOVIRUSES KW - RESPIRATORY infections KW - MEDICAL personnel KW - MILITARY hospitals KW - SEROTYPES KW - ENVIRONMENTAL sampling KW - POLYMERASE chain reaction KW - QUESTIONNAIRES KW - NOSOCOMIAL infections KW - TEXAS N1 - Accession Number: 45566202; Lessa, Fernanda C. 1,2; Email Address: flessa@cdc.gov Gould, Philip L. 2,3 Pascoe, Neil 4 Erdman, Dean D. 3 Xiaoyan Lu 3 Bunning, Michel L. 5 Marconi, Vincent C. 6 Lott, Lisa 7 Widdowson, Marc-Alain 3 Anderson, Larry J. 3 Srinivasan, Arjun 1; Affiliation: 1: Division of Healthcare Quality Promotion, National Center for Preparedness, Detection, and Control of Infectious Diseases 2: Epidemic Intelligence Service, Office of Workforce and Career Development 3: Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia 4: Texas Department of State Health Services, Austin 5: Air Force Medical Operations Agency, United States Air Force, Kelly Air Force Base 6: Wilford Hall US Air Force Medical Center 7: Epidemic Outbreak Surveillance, Advanced Diagnostics Laboratory, Modernization Directorate, Office of the Surgeon General, Lackland Air Force Base, Texas; Source Info: 12/1/2009, Vol. 200 Issue 11, p1759; Subject Term: ADENOVIRUSES; Subject Term: RESPIRATORY infections; Subject Term: MEDICAL personnel; Subject Term: MILITARY hospitals; Subject Term: SEROTYPES; Subject Term: ENVIRONMENTAL sampling; Subject Term: POLYMERASE chain reaction; Subject Term: QUESTIONNAIRES; Subject Term: NOSOCOMIAL infections; Subject Term: TEXAS; NAICS/Industry Codes: 622111 General (except paediatric) hospitals; Number of Pages: 7p; Illustrations: 3 Charts, 1 Graph; Document Type: Article L3 - 10.1086/647987 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45566202&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - THOTA, SAMMAIAH AU - KOKUBO, KEN AU - LOON-SENG TAN AU - LONG CHIANG T1 - Synthesis of Highly Luminescent Tris-Fluorenyl Chromophores as Intermediates of Potential Nonlinear Photonic Materials. JO - Journal of Macromolecular Science: Pure & Applied Chemistry JF - Journal of Macromolecular Science: Pure & Applied Chemistry Y1 - 2009/12// VL - 46 IS - 12 M3 - Article SP - 1165 EP - 1171 PB - Taylor & Francis Ltd SN - 10601325 AB - In our effort to enhance the cross section of simultaneous multiphoton absorption of C60-based photonic nanomaterials, a novel highly luminescent tris-fluorenyl ring-interconnected chromophore tris-DPAF-C9 was designed and synthesized using a C3 symmetrical triaminobenzene core as the synthon. The structural moiety bears a close resemblance to that of 2-diphenylamino-9,9-dialkylfluorenyl attachment in the previously studied C60(> DPAF-Cn)x. The product tris-DPAF-C9 was fully characterized by NMR, UV, IR, and MALDI-TOF MS spectroscopic methods. Based on the molecular energy calculation at MOPAC PM3 level, it suggested the presence of two possible cis/trans stereoisomers on the configuration of fluorenyl moieties. Consequently, a lower heat formation (ΔHf) of 19.9 kcal/mol was found for the tris-cis C9-isomer as the favorable one vs 47.9 kcal/mol for the bis-mono-trans C9-isomer. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Macromolecular Science: Pure & Applied Chemistry is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTONICS KW - NANOSTRUCTURED materials KW - NUCLEAR isomers KW - FLUORINE compounds KW - BENZENE KW - C3 symmetry KW - C3 symmetry KW - diphenylaminofluorene KW - luminescent compound KW - photonic nanomaterials KW - stereoisomer KW - tris-fluorenyl chromophore N1 - Accession Number: 45020468; THOTA, SAMMAIAH 1 KOKUBO, KEN 1,2 LOON-SENG TAN 3 LONG CHIANG 1; Email Address: Long_Chiang@uml.edu; Affiliation: 1: Department of Chemistry, Institute of Nanoscience and Technology, University of Massachusetts Lowell, Lowell, MA 01854 2: Division of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan 3: Materials & Manufacturing Directorate, AFRL/RXBN, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433; Source Info: Dec2009, Vol. 46 Issue 12, p1165; Subject Term: PHOTONICS; Subject Term: NANOSTRUCTURED materials; Subject Term: NUCLEAR isomers; Subject Term: FLUORINE compounds; Subject Term: BENZENE; Author-Supplied Keyword: C3 symmetry; Author-Supplied Keyword: C3 symmetry; Author-Supplied Keyword: diphenylaminofluorene; Author-Supplied Keyword: luminescent compound; Author-Supplied Keyword: photonic nanomaterials; Author-Supplied Keyword: stereoisomer; Author-Supplied Keyword: tris-fluorenyl chromophore; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 7p; Illustrations: 2 Diagrams, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1080/10601320903340028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45020468&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - ZUPAN, MICHAEL F. AU - ARATA, ALAN W. AU - DAWSON, LETITIA H. AU - WILE, ALFRED L. AU - PAYN, TAMARA L. AU - HANNON, MEGAN E. T1 - WINGATE ANAEROBIC TEST PEAK POWER AND ANAEROBIC CAPACITY CLASSIFICATIONS FOR MEN AND WOMEN INTERCOLLEGIATE ATHLETES. JO - Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins) JF - Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins) Y1 - 2009/12// VL - 23 IS - 9 M3 - Article SP - 2598 EP - 2604 SN - 10648011 AB - The article reports on research conducted to develop a classification system for anaerobic peak power and anaerobic capacity for men and women National Collegiate Athletic Association (NCAA) division one college athletes using the Wingate Anaerobic Test. Researchers were able to develop a seven tier classification that can be used by athletes, coaches, and practitioners to evaluate anaerobic peak power and anaerobic capacity in their athletes. KW - PHYSICAL fitness -- Research KW - COLLEGE athletes KW - ANAEROBIC capacity KW - ANAEROBIC training KW - ATHLETIC ability -- Testing KW - absolute power KW - fatigue index KW - muscular power KW - physical fitness KW - relative power N1 - Accession Number: 47453464; ZUPAN, MICHAEL F. 1; Email Address: michael.zupan@usafa.edu ARATA, ALAN W. 1 DAWSON, LETITIA H. 1 WILE, ALFRED L. 1 PAYN, TAMARA L. 2 HANNON, MEGAN E. 3; Affiliation: 1: Department of Athletics, United States Air Force Academy, USAFA, Colorado. 2: Department of Exercise Science, University of South Carolina, Columbia, South Carolina. 3: Annex Sports Performance, Chatham, New Jersey.; Source Info: Dec2009, Vol. 23 Issue 9, p2598; Subject Term: PHYSICAL fitness -- Research; Subject Term: COLLEGE athletes; Subject Term: ANAEROBIC capacity; Subject Term: ANAEROBIC training; Subject Term: ATHLETIC ability -- Testing; Author-Supplied Keyword: absolute power; Author-Supplied Keyword: fatigue index; Author-Supplied Keyword: muscular power; Author-Supplied Keyword: physical fitness; Author-Supplied Keyword: relative power; NAICS/Industry Codes: 713940 Fitness and Recreational Sports Centers; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47453464&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - WALKER, THOMAS B. AU - ZUPAN, MICHAEL F. AU - MCGREGOR, JULIA N. AU - CANTWELL, ANDREW R. AU - NORRIS, TORRANCE D. T1 - IS PERFORMANCE OF INTERMITTENT INTENSE EXERCISE ENHANCED BY USE OF A COMMERCIAL PALM COOLING DEVICE? JO - Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins) JF - Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins) Y1 - 2009/12// VL - 23 IS - 9 M3 - Article SP - 2666 EP - 2672 SN - 10648011 AB - The article reports on research conducted to determine whether the use a commercial palm cooling device called the CoreControl Rapid Thermal Exchange RTX during rest periods is an effective means to increase performance of intermittent intense exercise in athletes. Researchers evaluated 10 athletes. They found that the RTX was ineffective at improving performance or mitigating thermal stress. KW - PHYSICAL fitness -- Research KW - ATHLETIC ability -- Testing KW - ATHLETES KW - RESEARCH KW - PHYSICAL training & conditioning KW - PHYSIOLOGICAL research KW - mechanical cooling KW - running performance KW - thermal stress N1 - Accession Number: 47453473; WALKER, THOMAS B. 1; Email Address: Thomas.walker@brooks.af.mil ZUPAN, MICHAEL F. 1 MCGREGOR, JULIA N. 1 CANTWELL, ANDREW R. 1 NORRIS, TORRANCE D. 1; Affiliation: 1: Air Force Research Laboratory, Brooks City-Base, Texas.; Source Info: Dec2009, Vol. 23 Issue 9, p2666; Subject Term: PHYSICAL fitness -- Research; Subject Term: ATHLETIC ability -- Testing; Subject Term: ATHLETES; Subject Term: RESEARCH; Subject Term: PHYSICAL training & conditioning; Subject Term: PHYSIOLOGICAL research; Author-Supplied Keyword: mechanical cooling; Author-Supplied Keyword: running performance; Author-Supplied Keyword: thermal stress; NAICS/Industry Codes: 711219 Other Spectator Sports; NAICS/Industry Codes: 713940 Fitness and Recreational Sports Centers; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47453473&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Effects of bandwidth on auditory localization with a noise masker. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2009/12// VL - 126 IS - 6 M3 - Article SP - 3199 EP - 3208 SN - 00014966 AB - Although high-frequency content is known to be critically important for the accurate location of isolated sounds, relatively little is known about the importance of high-frequency spectral content for the localization of sounds in the presence of a masker. In this experiment, listeners were asked to identify the location of a pulsed-noise target in the presence of a randomly located continuous noise masker. Both the target and masker were low-pass filtered at one of eight cutoff frequencies ranging from 1 to 16 kHz, and the signal-to-noise ratio was varied from -12 to +12 dB. The results confirm the importance of high frequencies for the localization of isolated sounds, and show that high-frequency content remains critical in cases where the target sound is masked by a spatially separated masker. In fact, when two sources of the same level are randomly located in space, these results show that a decrease in stimulus bandwidth from 16 to 12 kHz might result in a 30% increase in overall localization error. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIRECTIONAL hearing KW - AUDIO frequency KW - NOISE control KW - BANDWIDTHS KW - SOUNDS KW - AUDIOLOGY N1 - Accession Number: 46745291; Brungart, Douglas S. 1; Email Address: douglas.brungart@us.army.mil Simpson, Brian D. 1; Affiliation: 1: Air Force Research Laboratory, 2610 Seventh Street, WPAFB, Ohio 45433; Source Info: Dec2009, Vol. 126 Issue 6, p3199; Subject Term: DIRECTIONAL hearing; Subject Term: AUDIO frequency; Subject Term: NOISE control; Subject Term: BANDWIDTHS; Subject Term: SOUNDS; Subject Term: AUDIOLOGY; NAICS/Industry Codes: 512290 Other Sound Recording Industries; Number of Pages: 10p; Illustrations: 1 Black and White Photograph, 1 Diagram, 1 Chart, 10 Graphs; Document Type: Article L3 - 10.1121/1.3243309 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=46745291&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sukeshini, Mary. A AU - Cummins, Ryan AU - Reitz, Thomas L. AU - Miller, Ryan M. T1 - Ink-Jet Printing: A Versatile Method for Multilayer Solid Oxide Fuel Cells Fabrication. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2009/12// VL - 92 IS - 12 M3 - Article SP - 2913 EP - 2919 PB - Wiley-Blackwell SN - 00027820 AB - The potential of ink-jet printing for fabrication of components for solid oxide fuel cells has been explored. An anode interlayer, consisting of a composite of NiO and yttria-stabilized zirconia (YSZ), and an electrolyte layer, YSZ (8 mol%), were ink-jet printed on a tape cast anode support, 55 wt% NiO–45 wt% YSZ (8 mol%). Scanning electron microscopy of the printed layers sintered at 1400°C revealed a dense electrolyte layer measuring 10–12 μm in thickness. Single cells using these printed layers and strontium-doped lanthanum manganate (LSM, La0.8Sr0.2MnO3)-based pasted cathodes were assessed by DC polarization and AC complex impedance methods. The cells exhibited a stable open circuit voltage of 1.1 V around 800°C, in a hydrogen atmosphere. A maximum power density of 500 m·(W·cm)−2 was achieved at 850°C for a typical cell with the electrolyte and anode interlayer cosintered at 1400°C. A composite cathode interlayer, LSM–YSZ, and a cathode current collection layer, LSM, were also ink-jet printed and incorporated in single cells. However, cells with all components ink-jet printed showed decreased performance. This pointed to critical issues in the composite cathode microstructure, which is controlled by the composite ink design/formulation and printing parameters that need to be addressed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INK-jet printing KW - COMPUTER printers KW - SOLID oxide fuel cells KW - ELECTRON microscopy KW - ZIRCONIUM oxide KW - ISOSTATIC pressing KW - POWDER metallurgy KW - SCANNING electron microscopy KW - NONIMPACT printing N1 - Accession Number: 45393271; Sukeshini, Mary. A 1; Email Address: mary.ayyadurai.ctr@wpafb.af.mil Cummins, Ryan 1 Reitz, Thomas L. 2 Miller, Ryan M. 2; Affiliation: 1: Department of Mechanical and Materials Engineering, Wright State University, Dayton, Ohio 45430. 2: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, Ohio 45433.; Source Info: Dec2009, Vol. 92 Issue 12, p2913; Subject Term: INK-jet printing; Subject Term: COMPUTER printers; Subject Term: SOLID oxide fuel cells; Subject Term: ELECTRON microscopy; Subject Term: ZIRCONIUM oxide; Subject Term: ISOSTATIC pressing; Subject Term: POWDER metallurgy; Subject Term: SCANNING electron microscopy; Subject Term: NONIMPACT printing; NAICS/Industry Codes: 323119 Other printing; NAICS/Industry Codes: 332117 Powder Metallurgy Part Manufacturing; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; Number of Pages: 7p; Illustrations: 4 Diagrams, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2009.03349.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45393271&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhdanov, B.V. AU - Shaffer, M.K. AU - Holmes, W. AU - Knize, R.J. T1 - Blue laser light generation by intracavity frequency doubling of Cesium vapor laser JO - Optics Communications JF - Optics Communications Y1 - 2009/12// VL - 282 IS - 23 M3 - Article SP - 4585 EP - 4586 SN - 00304018 AB - Abstract: Blue laser light with a wavelength 447nm was generated by intracavity frequency doubling of a Cs laser in PPKTP crystal. A continuous wave power of 600mW was obtained at an optical-to-optical efficiency of 4%. In the pulsed operation, when thermal effects were reduced, the efficiency obtained was 14% and the peak blue power was 2.1W. [Copyright &y& Elsevier] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL vapor lasers KW - CESIUM vapor KW - SECOND harmonic generation KW - WAVELENGTHS KW - CRYSTALS KW - NONLINEAR optics KW - Alkali lasers KW - Second harmonic generation N1 - Accession Number: 44700453; Zhdanov, B.V.; Email Address: boris.zhdanov.ctr@usafa.edu Shaffer, M.K. 1 Holmes, W. 1 Knize, R.J. 1; Affiliation: 1: US Air Force Academy, Department of Physics, 2354 Fairchild Dr., Ste. 2A31, USAF Academy, CO 80840, USA; Source Info: Dec2009, Vol. 282 Issue 23, p4585; Subject Term: METAL vapor lasers; Subject Term: CESIUM vapor; Subject Term: SECOND harmonic generation; Subject Term: WAVELENGTHS; Subject Term: CRYSTALS; Subject Term: NONLINEAR optics; Author-Supplied Keyword: Alkali lasers; Author-Supplied Keyword: Second harmonic generation; Number of Pages: 2p; Document Type: Article L3 - 10.1016/j.optcom.2009.08.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44700453&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, S. I. AU - Dimiduk, D. M. AU - El-Awady, J. A. AU - Parthasarathy, T. A. AU - Uchic, M. D. AU - Woodward, C. T1 - Atomistic simulations of cross-slip nucleation at screw dislocation intersections in face-centered cubic nickel. JO - Philosophical Magazine JF - Philosophical Magazine Y1 - 2009/12//12/1/2009 VL - 89 IS - 34-36 M3 - Article SP - 3351 EP - 3369 SN - 14786435 AB - The Escaig model for thermally activated cross-slip in face-centered cubic (fcc) materials assumes that cross-slip preferentially occurs at obstacles that produce large stress gradients on the Shockley partials of the screw dislocations. However, it is unclear as to the source, identity and concentration of such obstacles in single-phase fcc materials. Embedded atom potential, molecular-statics simulations of screw character dislocation intersections with 120° forest dislocations in fcc Ni are described that illustrate a mechanism for cross-slip nucleation. The simulations show how such intersections readily produce cross-slip nuclei and thus may be preferential sites for cross-slip. The energies of the dislocation intersection cores are estimated and it is shown that a partially cross-slipped configuration for the intersection is the most stable. In addition, simple three-dimensional dislocation dynamics simulations accounting for Shockley partials are shown to qualitatively reproduce the atomistically determined core structures for the same dislocation intersections. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Magazine is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISLOCATIONS in metals KW - NUCLEATION KW - MOLECULAR dynamics KW - SIMULATION methods & models KW - METALS KW - atomistic simulations KW - cross-slip KW - dislocation dynamics simulations KW - dislocation intersections KW - embedded atom potentials N1 - Accession Number: 45542476; Rao, S. I. 1 Dimiduk, D. M. 2 El-Awady, J. A. 3 Parthasarathy, T. A. 1 Uchic, M. D. 2 Woodward, C. 2; Email Address: christopher.woodward@wpafb.af.mil; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Rd, Dayton, OH 45432-1894, USA. 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM Wright-Patterson AFB, OH 45433-7817, USA. 3: UTC, Dayton, OH 45432, USA.; Source Info: 12/1/2009, Vol. 89 Issue 34-36, p3351; Subject Term: DISLOCATIONS in metals; Subject Term: NUCLEATION; Subject Term: MOLECULAR dynamics; Subject Term: SIMULATION methods & models; Subject Term: METALS; Author-Supplied Keyword: atomistic simulations; Author-Supplied Keyword: cross-slip; Author-Supplied Keyword: dislocation dynamics simulations; Author-Supplied Keyword: dislocation intersections; Author-Supplied Keyword: embedded atom potentials; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 19p; Illustrations: 1 Diagram, 3 Charts, 11 Graphs; Document Type: Article L3 - 10.1080/14786430903286201 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45542476&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barnes, P.N. AU - Haugan, T.J. AU - Baca, F.J. AU - Varanasi, C.V. AU - Wheeler, R. AU - Meisenkothen, F. AU - Sathiraju, S. T1 - Inducing self-assembly of Y2BaCuO5 nanoparticles via Ca-doping for improved pinning in YBa2Cu3O7−x JO - Physica C JF - Physica C Y1 - 2009/12// VL - 469 IS - 23/24 M3 - Article SP - 2029 EP - 2032 SN - 09214534 AB - Abstract: Different mechanisms may exists as a means to provide additional or specialized enhancement of existing nanoparticulate pinning in YBa2Cu3O7−x (YBCO) thin films. In the particular case of Y2BaCuO5 (Y211) nanoparticles, Ca-doping of these nanoparticles via addition to the Y211 target material provides an additional increase to the J c(H). YBCO+Y211 samples were created by pulsed laser deposition with alternating targets of YBCO with Y211 and Y211 doped with Ca. Initial indications suggest that this improvement in pinning results from some scattered short-ranged self-assembly of the nanoparticles into short nanocolumns. [Copyright &y& Elsevier] AB - Copyright of Physica C is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR self-assembly KW - OXIDES KW - NANOPARTICLES KW - FLUX pinning KW - REACTION mechanisms (Chemistry) KW - PULSED laser deposition KW - HIGH temperature superconductors KW - Critical currents KW - High temperature superconductor KW - Pinning KW - Self-assembly KW - YBCO N1 - Accession Number: 45218334; Barnes, P.N. 1; Email Address: paul.barnes@wpafb.af.mil Haugan, T.J. 1 Baca, F.J. 1,2 Varanasi, C.V. 1,3 Wheeler, R. 4 Meisenkothen, F. 4 Sathiraju, S. 1; Affiliation: 1: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, OH 45433, USA 2: Department of Physics and Astronomy, University of Kansas, Lawrence, KS 66045, USA 3: University of Dayton Research Institute, Metals and Ceramics, 2645 Fifth Street, Dayton, OH 45469, USA 4: UES, Inc., 4401 Dayton-Xenia Drive, Dayton, OH 45432, USA; Source Info: Dec2009, Vol. 469 Issue 23/24, p2029; Subject Term: MOLECULAR self-assembly; Subject Term: OXIDES; Subject Term: NANOPARTICLES; Subject Term: FLUX pinning; Subject Term: REACTION mechanisms (Chemistry); Subject Term: PULSED laser deposition; Subject Term: HIGH temperature superconductors; Author-Supplied Keyword: Critical currents; Author-Supplied Keyword: High temperature superconductor; Author-Supplied Keyword: Pinning; Author-Supplied Keyword: Self-assembly; Author-Supplied Keyword: YBCO; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.physc.2009.08.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45218334&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Singh, Gurpreet AU - Priya, Shashank AU - Hossu, Maria R. AU - Shah, Sandeep R. AU - Grover, Sachit AU - Koymen, Ali R. AU - Mahajan, Roop L. T1 - Synthesis, electrical and magnetic characterization of core–shell silicon carbo-nitride coated carbon nanotubes JO - Materials Letters JF - Materials Letters Y1 - 2009/11/30/ VL - 63 IS - 28 M3 - Article SP - 2435 EP - 2438 SN - 0167577X AB - Abstract: We demonstrate synthesis, electrical and magnetic characterization of silicon carbo-nitride (SiCN) coated multiwalled carbon nanotubes in a core–shell structure. The core formed by a carbon nanotube had a diameter in the range of 10–100 nm. The shell was synthesized by pyrolysis of an SiCN precursor on the surface of carbon nanotubes. Electrical resistivity of an individual composite nanotube was measured to be ~2.55×103 Ω cm. The magnetic measurements performed by a superconducting quantum interference device on the composite nanotubes in the temperature range of 5–300 K show a reduced coercive field with increasing temperatures. The monolayer thick coating of an ultra high temperature multifunctional ceramic SiCN makes these composite nanotubes very promising for sensing applications in harsh environments. [Copyright &y& Elsevier] AB - Copyright of Materials Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - SILICON KW - CARBON compounds KW - MAGNETIC measurements KW - SUPERCONDUCTING quantum interference devices KW - TEMPERATURE effect KW - MAGNETIZATION KW - MATERIALS -- Electric properties KW - Carbon nanotubes KW - Focused ion beam KW - Magnetization KW - Nanomanipulation KW - SiCN N1 - Accession Number: 44415935; Singh, Gurpreet 1; Email Address: gurpreet@vt.EDU Priya, Shashank 2; Email Address: spriya@vt.EDU Hossu, Maria R. 3 Shah, Sandeep R. 4 Grover, Sachit 5 Koymen, Ali R. 3 Mahajan, Roop L. 1,6; Affiliation: 1: Institute for Critical Technology and Applied Science (ICTAS), Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA 2: Center for Energy Harvesting Materials and Systems (CEHMS), Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA 3: Department of Physics, University of Texas at Arlington, TX 76019, USA 4: Department of Engineering Mechanics, Center for Aircraft Structural Life Extension (CAStLE) United States Air Force Academy, USAF Academy, CO 80840, USA 5: Department of Electrical and Computer Engineering, University of Colorado at Boulder, CO 80309, USA 6: Department of Mechanical Engineering, Department of Engineering Science and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; Source Info: Nov2009, Vol. 63 Issue 28, p2435; Subject Term: CARBON nanotubes; Subject Term: SILICON; Subject Term: CARBON compounds; Subject Term: MAGNETIC measurements; Subject Term: SUPERCONDUCTING quantum interference devices; Subject Term: TEMPERATURE effect; Subject Term: MAGNETIZATION; Subject Term: MATERIALS -- Electric properties; Author-Supplied Keyword: Carbon nanotubes; Author-Supplied Keyword: Focused ion beam; Author-Supplied Keyword: Magnetization; Author-Supplied Keyword: Nanomanipulation; Author-Supplied Keyword: SiCN; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.matlet.2009.08.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44415935&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ullrich, B. AU - Brown, G.J. T1 - Room temperature photoluminescence of amorphous GaAs JO - Materials Letters JF - Materials Letters Y1 - 2009/11/30/ VL - 63 IS - 28 M3 - Article SP - 2489 EP - 2491 SN - 0167577X AB - Abstract: We report what is believed to be the first observation of room temperature photoluminescence of amorphous GaAs. By means of low-temperature pulsed-laser deposition amorphous GaAs thin films were deposited on glass and Si substrates. Almost identical room temperature emission spectra with a peak centered at 1.368eV have been observed for both samples. The results stress the capability of laser deposition to form hetero-paired optical device structures for room temperature operations independent of substrate morphologies. [Copyright &y& Elsevier] AB - Copyright of Materials Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM arsenide KW - AMORPHOUS substances KW - PHOTOLUMINESCENCE KW - TEMPERATURE effect KW - SPECTRUM analysis KW - THIN films KW - ABSORPTION KW - PULSED laser deposition KW - Amorphous GaAs KW - Pulsed-laser deposition KW - Room temperature photoluminescence KW - Thin-film absorption N1 - Accession Number: 44415952; Ullrich, B. 1,2; Email Address: bruno@kottan-labs.bgsu.edu Brown, G.J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, OH 45433-7707, United States 2: Department of Physics and Astronomy, Centers for Materials and Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403-0209, United States; Source Info: Nov2009, Vol. 63 Issue 28, p2489; Subject Term: GALLIUM arsenide; Subject Term: AMORPHOUS substances; Subject Term: PHOTOLUMINESCENCE; Subject Term: TEMPERATURE effect; Subject Term: SPECTRUM analysis; Subject Term: THIN films; Subject Term: ABSORPTION; Subject Term: PULSED laser deposition; Author-Supplied Keyword: Amorphous GaAs; Author-Supplied Keyword: Pulsed-laser deposition; Author-Supplied Keyword: Room temperature photoluminescence; Author-Supplied Keyword: Thin-film absorption; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.matlet.2009.08.047 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44415952&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hilmar Koerner AU - John Kelley AU - Justin George AU - Lawrence Drummy AU - Peter Mirau AU - Nelson S. Bell AU - Julia W. P. Hsu AU - Richard A. Vaia T1 - ZnO Nanorod−Thermoplastic Polyurethane Nanocomposites: Morphology and Shape Memory Performance. JO - Macromolecules JF - Macromolecules Y1 - 2009/11/24/ VL - 42 IS - 22 M3 - Article SP - 8933 EP - 8942 SN - 00249297 AB - The impact of dispersed alkylthiol-modified ZnO nanorods, as a function of rod aspect ratio and concentration, on the shape memory character of a thermoplastic polyurethane with low hard-segment density (LHS-TPU) is examined relative to the enhanced performance occurring for carbon nanofiber (CNF) dispersion. Solution blending resulted in uniform dispersion within the LHS-TPU of the ZnO nanorods at low volume (weight) fractions (<2.9% v/v (17.75% w/w)). Tensile modulus enhancements were modest though, comparable to values observed for spherical nanofillers. Shape memory characteristics, which in this LHS-TPU result when strain-induced crystallites retard the entropic recovery of the deformed chains, were unchanged for these low volume fraction ZnO nanocomposites. Higher ZnO loadings (12% v/v (50% w/w)) exhibited clustering of ZnO nanorods into a mesh-like structure. Here, tensile modulus and shape recovery characteristics were improved, although not as great as seen for comparable CNF addition. Wide angle X-ray diffraction and NMR revealed that the addition of ZnO nanorods did not impact the inherent strain induced crystallization of the LHS-TPU, which is in contrast to the impact of CNFs and emphasizes the impact of interactions at the polymer−nanoparticle interface. Overall, these findings reinforce the hypothesis that the shape memory properties of polymer nanocomposites are governed by the extent to which nanoparticle addition, via nanoparticle aspect ratio, hierarchical morphology, and interfacial interactions, impacts the molecular mechanism responsible for trapping elastic strain. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide KW - POLYURETHANES KW - NANOCOMPOSITE materials KW - THERMOPLASTICS KW - SHAPE memory effect KW - THIOLS KW - NANOFIBERS KW - POLYMER solutions N1 - Accession Number: 45302252; Hilmar Koerner 1 John Kelley 1 Justin George 1 Lawrence Drummy 1 Peter Mirau 1 Nelson S. Bell 1 Julia W. P. Hsu 1 Richard A. Vaia 1; Affiliation: 1: †Materials and Manufacturing Directorate, Air Force Research Laboratory, AFRL/RXBN, 2941 Hobson Way, Wright-Patterson AFB, Ohio 45433; Source Info: Nov2009, Vol. 42 Issue 22, p8933; Subject Term: ZINC oxide; Subject Term: POLYURETHANES; Subject Term: NANOCOMPOSITE materials; Subject Term: THERMOPLASTICS; Subject Term: SHAPE memory effect; Subject Term: THIOLS; Subject Term: NANOFIBERS; Subject Term: POLYMER solutions; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45302252&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Shea, M.A. T1 - Cosmic rays from past to present JO - Advances in Space Research JF - Advances in Space Research Y1 - 2009/11/16/ VL - 44 IS - 10 M3 - Editorial SP - 1079 EP - 1080 SN - 02731177 N1 - Accession Number: 44699095; Shea, M.A. 1; Email Address: sssrc@msn.com; Affiliation: 1: Emeritus, Air Force Research Laboratory (RVBXS), Hanscom AFB, Bedford, MA 01731-3010, USA; Source Info: Nov2009, Vol. 44 Issue 10, p1079; Number of Pages: 2p; Document Type: Editorial L3 - 10.1016/j.asr.2009.09.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44699095&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rishbeth, H. AU - Shea, M.A. AU - Smart, D.F. T1 - The solar-terrestrial event of 23 February 1956 JO - Advances in Space Research JF - Advances in Space Research Y1 - 2009/11/16/ VL - 44 IS - 10 M3 - Article SP - 1096 EP - 1106 SN - 02731177 AB - Abstract: The solar flare of 23 February 1956 and the resulting geophysical disturbance ranks as one of the most remarkable solar-terrestrial events of the twentieth century. It sparked many papers and has seldom been equalled. Fifty years after the International Geophysical Year, it seems timely to review the observations of the event from today’s perspective, and to draw on the recollections of scientists who were active at the time. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR-terrestrial physics KW - SOLAR activity KW - IONOSPHERE KW - SOLAR flares KW - GEOPHYSICAL observatories KW - INTERNATIONAL Geophysical Year, 1957-1958 KW - 23 February 1956 KW - Ground-level enhancements (GLE) KW - Ionosphere KW - Personal reminiscences KW - Solar activity KW - Solar-terrestrial events N1 - Accession Number: 44699097; Rishbeth, H. 1; Email Address: rishbeth@soton.ac.uk Shea, M.A. 2; Email Address: sssrc@msn.com Smart, D.F. 2; Affiliation: 1: School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, UK 2: Emeritus, Air Force Research Laboratory (RVBXS), 29 Randolph Road, Hanscom AFB, Bedford, MA 01731, USA; Source Info: Nov2009, Vol. 44 Issue 10, p1096; Subject Term: SOLAR-terrestrial physics; Subject Term: SOLAR activity; Subject Term: IONOSPHERE; Subject Term: SOLAR flares; Subject Term: GEOPHYSICAL observatories; Subject Term: INTERNATIONAL Geophysical Year, 1957-1958; Author-Supplied Keyword: 23 February 1956; Author-Supplied Keyword: Ground-level enhancements (GLE); Author-Supplied Keyword: Ionosphere; Author-Supplied Keyword: Personal reminiscences; Author-Supplied Keyword: Solar activity; Author-Supplied Keyword: Solar-terrestrial events; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.asr.2009.06.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44699097&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smart, D.F. AU - Shea, M.A. T1 - Fifty years of progress in geomagnetic cutoff rigidity determinations JO - Advances in Space Research JF - Advances in Space Research Y1 - 2009/11/16/ VL - 44 IS - 10 M3 - Article SP - 1107 EP - 1123 SN - 02731177 AB - Abstract: This paper is a review of the progress made in geomagnetic cutoff rigidity calculations over the past 50years. Determinations of cosmic ray trajectories, and hence cutoff rigidities, using digital computers began in 1956 and progressed slowly until 1962 when McCracken developed an efficient computer program to determine cosmic ray trajectories in a high degree simulation of the geomagnetic field. The application of this cosmic ray trajectory technique was limited by the available computer power. As computers became faster it was possible to determine vertical cutoff rigidity values for cosmic ray stations and coarse world grids; however, the computational effort required was formidable for the computers of the 1960s. Since most cosmic ray experiments were conducted on the surface of the Earth, the vertical cutoff rigidity was adopted as a standard reference value. The effective cutoff value derived from trajectory calculations appeared to be adequate for ordering cosmic ray data from latitude surveys. As the geomagnetic field evolution became more apparent, it was found necessary to update the world grid of cutoff rigidity values using more accurate descriptions of the geomagnetic field. In the 1970s and 1980s it became possible to do experimental verification of the accuracy of these cosmic ray cutoff determinations and also to design experiments based on these cutoff rigidity calculations. The extensive trajectory calculations done in conjunction with the HEAO-3 satellite and a comparison between these experimental measurements and the trajectory calculations verified the Störmer theory prediction regarding angular cutoff variations and also confirmed that the structure of the first order penumbra is very stable and could be used for isotope separation. Contemporary work in improving cutoff rigidities seems to be concentrating on utilizing improved magnetospheric models in an effort to determine more accurate geomagnetic cutoff values. When using geomagnetic cutoff rigidity values to predict the cosmic radiation access to spacecraft for a satisfactory computation of the radiation dose, both the particle transmission though the cosmic ray penumbra and angular cutoffs must be considered. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GEOMAGNETISM KW - COSMIC rays KW - SPACE trajectories KW - RADIATION -- Dosage KW - LITERATURE reviews KW - NUMERICAL calculations KW - MAGNETOSPHERIC physics KW - HIGH energy astronomy observatories KW - Cosmic ray radiation dose KW - Cosmic ray trajectory-tracing KW - Cosmic rays KW - Cutoff rigidity calculation history KW - Geomagnetic cutoff rigidity KW - Geomagnetic field N1 - Accession Number: 44699098; Smart, D.F. 1 Shea, M.A.; Email Address: sssrc@msn.com; Affiliation: 1: Emeritus, Air Force Research Laboratory (RVBXS), 29 Randolph Road, Hanscom AFB, Bedford, MA 01731, USA; Source Info: Nov2009, Vol. 44 Issue 10, p1107; Subject Term: GEOMAGNETISM; Subject Term: COSMIC rays; Subject Term: SPACE trajectories; Subject Term: RADIATION -- Dosage; Subject Term: LITERATURE reviews; Subject Term: NUMERICAL calculations; Subject Term: MAGNETOSPHERIC physics; Subject Term: HIGH energy astronomy observatories; Author-Supplied Keyword: Cosmic ray radiation dose; Author-Supplied Keyword: Cosmic ray trajectory-tracing; Author-Supplied Keyword: Cosmic rays; Author-Supplied Keyword: Cutoff rigidity calculation history; Author-Supplied Keyword: Geomagnetic cutoff rigidity; Author-Supplied Keyword: Geomagnetic field; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.asr.2009.07.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44699098&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anderson, Paul E. AU - Raymer, Michael L. AU - Kelly, Benjamin J. AU - Reo, Nicholas V. AU - DelRaso, Nicholas J. AU - Doom, T. E. T1 - Characterization of 1H NMR spectroscopic data and the generation of synthetic validation sets. JO - Bioinformatics JF - Bioinformatics Y1 - 2009/11/15/ VL - 25 IS - 22 M3 - Article SP - 2992 EP - 3000 SN - 13674803 AB - Motivation: Common contemporary practice within the nuclear magnetic resonance (NMR) metabolomics community is to evaluate and validate novel algorithms on empirical data or simplified simulated data. Empirical data captures the complex characteristics of experimental data, but the optimal or most correct analysis is unknown a priori; therefore, researchers are forced to rely on indirect performance metrics, which are of limited value. In order to achieve fair and complete analysis of competing techniques more exacting metrics are required. Thus, metabolomics researchers often evaluate their algorithms on simplified simulated data with a known answer. Unfortunately, the conclusions obtained on simulated data are only of value if the data sets are complex enough for results to generalize to true experimental data. Ideally, synthetic data should be indistinguishable from empirical data, yet retain a known best analysis. [ABSTRACT FROM PUBLISHER] AB - Copyright of Bioinformatics is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUCLEAR magnetic resonance KW - ALGORITHMS KW - SPECTRUM analysis KW - METABOLITES KW - BIOMOLECULES N1 - Accession Number: 47430165; Anderson, Paul E. 1 Raymer, Michael L. 1 Kelly, Benjamin J. 1 Reo, Nicholas V. 2 DelRaso, Nicholas J. 3 Doom, T. E. 1; Email Address: travis.doom@wright.edu; Affiliation: 1: Department of Computer Science and Engineering, Dayton, OH 45435 2: Department of Biochemistry and Molecular Biology, Boonshoft School of Medicine, Cox Institute, Dayton, OH 45429 3: Air Force Research Laboratory, Biosciences and Protection Division, Wright-Patterson AFB, OH 45433, USA; Source Info: Nov2009, Vol. 25 Issue 22, p2992; Subject Term: NUCLEAR magnetic resonance; Subject Term: ALGORITHMS; Subject Term: SPECTRUM analysis; Subject Term: METABOLITES; Subject Term: BIOMOLECULES; Number of Pages: 9p; Illustrations: 4 Charts, 6 Graphs; Document Type: Article L3 - 10.1093/bioinformatics/btp540 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47430165&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patton, Steven T. AU - Zhang, Qiuhong AU - Qu, Liangti AU - Dai, Liming AU - Voevodin, Andrey A. AU - Baur, Jeff T1 - Electromechanical characterization of carbon nanotubes grown on carbon fiber. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2009/11/15/ VL - 106 IS - 10 M3 - Article SP - 104313-1 EP - 104313-9 PB - American Institute of Physics SN - 00218979 AB - Mechanical and electrical properties of carbon fiber (CF) and vertically aligned carbon nanotubes (CNTs) have been thoroughly investigated in previous studies. Growth of radially aligned CNTs on silicon oxide (SiO2) coated CF has recently been accomplished resulting in multiscale composite fiber (CNT/SiO2/CF). CNT/SiO2/CF offers promise as stress and strain sensors in CF reinforced composite materials. However, to date there have been no investigations of the electromechanical properties of CNT/SiO2/CF that would facilitate their usage as sensors in composite materials, which is the focus of this research. This study investigates fundamental mechanical and electrical properties of CF, SiO2/CF (SiO2 coated CF), and CNT/SiO2/CF during localized transverse compression at low loads (μN to mN) and small displacements (nm to a few μms). Force, strain, stiffness, and electrical resistance were monitored simultaneously during compression experiments. For CF, resistance decreased sharply upon compressive loading with hysteresis in both force and resistance being observed at low strain. For SiO2/CF, high resistance and negligible electrical conduction occurred, and the force-displacement curve was linear. CNT/SiO2/CF stiffness increased as force and strain increased and became comparable to that of CF at high strain (∼30%). Hysteresis in both force-displacement and resistance-displacement curves was observed with CNT/SiO2/CF, but was more evident as maximum strain increased and did not depend on strain rate. Force was higher and resistance was lower during compression as compared to decompression. Hysteretic energy loss is associated with internal friction between entangled CNTs. Van der Waals force between deformed and entangled CNTs hindered disentanglement, which reduced the number of electrical current paths and increased resistance during decompression. The results of this study provide new understanding of the mechanical and electrical behavior of CNT/SiO2/CF that will facilitate usage as stress and strain sensors in both stand-alone and composite materials applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - CARBON fibers KW - MATERIALS -- Mechanical properties KW - SILICON oxide KW - COMPOSITE materials N1 - Accession Number: 45515375; Patton, Steven T. 1,2 Zhang, Qiuhong 1,2 Qu, Liangti 2 Dai, Liming 2 Voevodin, Andrey A. 1 Baur, Jeff 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7750, 2: University of Dayton Research Institute, Dayton, Ohio 45469-0168,; Source Info: Nov2009, Vol. 106 Issue 10, p104313-1; Subject Term: CARBON nanotubes; Subject Term: CARBON fibers; Subject Term: MATERIALS -- Mechanical properties; Subject Term: SILICON oxide; Subject Term: COMPOSITE materials; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 9p; Illustrations: 3 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.3253747 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45515375&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mall, S. AU - Ouper, B. L. AU - Fielding, J. C. T1 - Compression Strength Degradation of Nanocomposites after Lightning Strike. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2009/11/15/ VL - 43 IS - 24 M3 - Article SP - 2987 EP - 3001 SN - 00219983 AB - This study investigated five conductive nanocomposites for their compressive strength degradation after subjecting them to a simulated lightning strike. These systems consisted of a ply of nickel-coated carbon woven fabric as lightning strike protection component besides the four plies of standard carbon fibers (AS4) fabric embedded in the epoxy (EPON 862). The other four systems had an additional protection system, which was nickel-nanostrand veil (NiNS), aligned buckypaper, random buckypaper, or mixed buckypaper made up of vapor-grown carbon fibers and single-walled nanotubes. All other buckypapers were made of single-walled nanotubes. Failure and damage mechanisms were also investigated. The ultimate compressive strength reduced by about 75-30% from a simulated lightning strike. This reduction as well as the damage was maximum with NiNS and minimum with random buckypaper. Damage from the lightning strike was related to the electrical conductivity and degradation in the compressive strength of the tested systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Compression testing KW - RESEARCH KW - LIGHTNING KW - NANOCOMPOSITE materials KW - COMPOSITE materials KW - NANOSTRUCTURED materials KW - compression KW - damage mechanisms KW - lightening strike KW - nanocomposites N1 - Accession Number: 45222626; Mall, S. 1; Email Address: Shankar.Mall@afit.edu Ouper, B. L. 1 Fielding, J. C. 2; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433-7765, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Nov2009, Vol. 43 Issue 24, p2987; Subject Term: MATERIALS -- Compression testing; Subject Term: RESEARCH; Subject Term: LIGHTNING; Subject Term: NANOCOMPOSITE materials; Subject Term: COMPOSITE materials; Subject Term: NANOSTRUCTURED materials; Author-Supplied Keyword: compression; Author-Supplied Keyword: damage mechanisms; Author-Supplied Keyword: lightening strike; Author-Supplied Keyword: nanocomposites; Number of Pages: 15p; Illustrations: 1 Color Photograph, 4 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1177/0021998309345337 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45222626&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pati, Ranjit AU - Panigrahi, Puspamitra AU - Pal, Partha Pratim AU - Akdim, Brahim AU - Pachter, Ruth T1 - Gate field induced electronic current modulation in a single wall boron nitride nanotube: Molecular scale field effect transistor JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2009/11/12/ VL - 482 IS - 4-6 M3 - Article SP - 312 EP - 315 SN - 00092614 AB - Abstract: We report a first-principles quantum transport study in a single wall boron nitride nanotube sandwiched between a pair of gold electrodes. The non-equilibrium Green’s function approach, in which the electric field effect is explicitly included within a many body framework, is used to calculate the channel current, , in the presence of a transverse gate field, . The is found to have a profound effect on the electronic current between the source and drain –revealing transistor behavior. The significant modulation in electronic current (ON–OFF current ratio of at of 3V) is attributed to the giant Stark shift caused by the gate field. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GATE array circuits KW - MODULATION (Electronics) KW - BORON nitride KW - NANOTUBES KW - FIELD-effect transistors KW - QUANTUM theory KW - TRANSPORT theory (Mathematics) KW - GOLD KW - ELECTRODES KW - GREEN'S functions N1 - Accession Number: 44941830; Pati, Ranjit 1; Email Address: patir@mtu.edu Panigrahi, Puspamitra 1 Pal, Partha Pratim 1 Akdim, Brahim 2 Pachter, Ruth 2; Affiliation: 1: Department of Physics, Michigan Technological University, Houghton, MI 49931, USA 2: Air Force Research Laboratory, WPAFB, OH 45433, USA; Source Info: Nov2009, Vol. 482 Issue 4-6, p312; Subject Term: GATE array circuits; Subject Term: MODULATION (Electronics); Subject Term: BORON nitride; Subject Term: NANOTUBES; Subject Term: FIELD-effect transistors; Subject Term: QUANTUM theory; Subject Term: TRANSPORT theory (Mathematics); Subject Term: GOLD; Subject Term: ELECTRODES; Subject Term: GREEN'S functions; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.cplett.2009.10.027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44941830&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cruz, E. J. AU - Hoff, B. W. AU - Pengvanich, P. AU - Lau, Y. Y. AU - Gilgenbach, R. M. AU - Luginsland, J. W. T1 - Experiments on peer-to-peer locking of magnetrons. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2009/11/09/ VL - 95 IS - 19 M3 - Article SP - 191503 PB - American Institute of Physics SN - 00036951 AB - Experiments on peer-to-peer locking of 2 kW magnetrons are performed. These experiments verify the recently developed theory on the condition under which the two nonlinear oscillators may be locked to a common frequency. Dependent on the coupling, the frequency of oscillation when locking occurs does not necessarily lie between the free running frequencies of the two isolated, stand-alone magnetrons. Likewise, when the locking condition is violated, the beat frequency is not necessarily equal to the difference between these free running frequencies. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - ELECTRIC oscillators KW - FREQUENCIES of oscillating systems KW - FLUCTUATIONS (Physics) KW - VIBRATION (Mechanics) N1 - Accession Number: 45249189; Cruz, E. J. 1 Hoff, B. W. 1,2 Pengvanich, P. 1,3 Lau, Y. Y. 1; Email Address: yylau@umich.edu Gilgenbach, R. M. 1 Luginsland, J. W. 1; Affiliation: 1: Department of Nuclear Engineering and Radiological Sciences, Plasma, Pulsed Power and Microwave Laboratory, University of Michigan, Ann Arbor, Michigan 48109-2104, USA 2: Air Force Research Laboratory, Kirtland AFB, NM 3: Chulalongkorn University, Bangkok, Thailand; Source Info: 11/9/2009, Vol. 95 Issue 19, p191503; Subject Term: MAGNETRONS; Subject Term: ELECTRIC oscillators; Subject Term: FREQUENCIES of oscillating systems; Subject Term: FLUCTUATIONS (Physics); Subject Term: VIBRATION (Mechanics); Number of Pages: 3p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.3262970 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45249189&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heckman, Emily M. AU - Gonzalez, Leonel P. AU - Guha, Shekhar AU - Barnes, Jacob O. AU - Carpenter, Amelia T1 - Electrical and optical switching properties of ion implanted VO2 thin films JO - Thin Solid Films JF - Thin Solid Films Y1 - 2009/11/02/ VL - 518 IS - 1 M3 - Article SP - 265 EP - 268 SN - 00406090 AB - Abstract: The metal-insulator transition in vanadium dioxide thin films implanted with O+ ions was studied. Ion implantation lowered the metal-insulator transition temperature of the VO2 films by 12 °C compared to the unimplanted ones, as measured both optically and electrically. The lowering of the transition temperature was accomplished without significantly reducing the mid-wave infrared optical transmission in the insulating state for wavelengths >4.3 μm. Raman spectroscopy was used to examine changes to the crystalline structure of the implanted films. The Raman spectra indicate that ion implantation effects are not annealed out for temperatures up to 120 °C. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films -- Optical properties KW - THIN films -- Electric properties KW - METALLIC oxides KW - VANADIUM KW - METAL-insulator transitions KW - ION implantation KW - TRANSITION temperature KW - RAMAN spectroscopy KW - Electrical properties and measurements KW - Optical properties KW - Raman scattering KW - Vanadium dioxide N1 - Accession Number: 44173744; Heckman, Emily M. 1,2; Email Address: emily.heckman@wpafb.af.mil Gonzalez, Leonel P. 1,2 Guha, Shekhar 1 Barnes, Jacob O. 1,2 Carpenter, Amelia 1,2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA 2: General Dynamics Information Technology, Dayton, Ohio 45430, USA; Source Info: Nov2009, Vol. 518 Issue 1, p265; Subject Term: THIN films -- Optical properties; Subject Term: THIN films -- Electric properties; Subject Term: METALLIC oxides; Subject Term: VANADIUM; Subject Term: METAL-insulator transitions; Subject Term: ION implantation; Subject Term: TRANSITION temperature; Subject Term: RAMAN spectroscopy; Author-Supplied Keyword: Electrical properties and measurements; Author-Supplied Keyword: Optical properties; Author-Supplied Keyword: Raman scattering; Author-Supplied Keyword: Vanadium dioxide; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.tsf.2009.05.063 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44173744&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bray, K.R. AU - Wu, R.L.C. AU - Fries-Carr, S. AU - Weimer, J. T1 - Aluminum oxynitride dielectrics for multilayer capacitors with higher energy density and wide temperature properties JO - Thin Solid Films JF - Thin Solid Films Y1 - 2009/11/02/ VL - 518 IS - 1 M3 - Article SP - 366 EP - 371 SN - 00406090 AB - Abstract: Amorphous aluminum oxynitride (AlON) possesses unique properties of high dielectric strength, high resistivity, low loss, high decomposition temperature, chemical inertness, and high thermal conductivity. These properties make it a candidate for a next generation capacitor dielectric. DC pulsed magnetron reactive sputtering is used to produce amorphous AlON films on various substrates. Dielectric properties are optimized by adjusting DC power, pulse frequency, total pressure, substrate temperature, and gas ratio. Simple parallel plate structures are utilized to characterize the dielectric properties. Clearable electrodes are evaluated in device performance. Defects cleared without significant loss of capacitance. Temperature dependent dielectric properties were evaluated from −200°C to +400°C. Stacked multilayer capacitor device is developed for high energy density and wide temperature applications. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM nitride KW - THIN films -- Electric properties KW - DIELECTRICS KW - CAPACITORS KW - TEMPERATURE effect KW - ELECTRIC resistance KW - THERMAL conductivity KW - MAGNETRON sputtering KW - Aluminum oxynitride KW - Dielectric KW - High temperature KW - Multilayer capacitors N1 - Accession Number: 44173778; Bray, K.R. 1 Wu, R.L.C. 1; Email Address: rlwu@aol.com Fries-Carr, S. 2 Weimer, J. 2; Affiliation: 1: K Systems Corp., 1522 Marsetta Dr., Beavercreek, OH 45432, USA 2: Air Force Research Laboratory, AFRL/RZPE, Wright Patterson AFB, OH 45433, USA; Source Info: Nov2009, Vol. 518 Issue 1, p366; Subject Term: ALUMINUM nitride; Subject Term: THIN films -- Electric properties; Subject Term: DIELECTRICS; Subject Term: CAPACITORS; Subject Term: TEMPERATURE effect; Subject Term: ELECTRIC resistance; Subject Term: THERMAL conductivity; Subject Term: MAGNETRON sputtering; Author-Supplied Keyword: Aluminum oxynitride; Author-Supplied Keyword: Dielectric; Author-Supplied Keyword: High temperature; Author-Supplied Keyword: Multilayer capacitors; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.tsf.2009.06.052 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44173778&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Singh, Thokchom Birendra AU - Sariciftci, Niyazi Serdar AU - Grote, James G. T1 - Bio-Organic Optoelectronic Devices Using DNA. JO - Advances in Polymer Science JF - Advances in Polymer Science Y1 - 2009/11// M3 - Article SP - 73 EP - 112 SN - 00653195 AB - Biomolecular DNA, as a marine waste product from salmon processing, has been exploited as biodegradable polymeric material for photonics and electronics. For preparing high optical quality thin films of DNA, a method using DNA with cationic surfactants such as DNA–cetyltrimethylammonium, CTMA has been applied. This process enhances solubility and processing for thin film fabrication. These DNA–CTMA complexes resulted in the formation of self-assembled supramolecular films. Additionally, the molecular weight can be tailored to suit the application through sonication. It revealed that DNA–CTMA complexes were thermostable up to 230 ° C. UV–VIS absorption shows that these thin films have high transparency from 350 to about 1,700 nm. Due to its nature of large band gap and large dielectric constant, thin films of DNA–CTMA has been successfully used in multiple applications such as organic light emitting diodes (OLED), a cladding and host material in nonlinear optical devices, and organic field-effect transistors (OFET). Using this DNA based biopolymers as a gate dielectric layer, OFET devices were fabricated that exhibits current–voltage characteristics with low voltages as compared with using other polymer-based dielectrics. Using a thin film of DNA–CTMA based biopolymer as the gate insulator and pentacene as the organic semiconductor, we have demonstrated a bio-organic FET or BioFET in which the current was modulated over three orders of magnitude using gate voltages less than 10 V. Given the possibility to functionalise the DNA film customised for specific purposes viz. biosensing, DNA–CTMA with its unique structural, optical and electronic properties results in many applications that are extremely interesting. [ABSTRACT FROM AUTHOR] AB - Copyright of Advances in Polymer Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Bioelectric phenomena KW - BioFET KW - BioLED KW - Biomolecular electronics KW - OFET KW - OLED KW - Organic electronics KW - Photonic devices KW - Plastic electronics N1 - Accession Number: 76716942; Singh, Thokchom Birendra 1; Email Address: birendra.singh@CSIRO.Au Sariciftci, Niyazi Serdar 1; Email Address: serdar.sariciftci@jku.at Grote, James G. 2; Affiliation: 1: Johannes Kepler University, Linz Institute of Organic Solar Cells (LIOS), Institute of physical chemistry, Linz, A 4040, Austria 2: AFRL/MLPS, Wright-Patterson Air Force Base, Air Force Research Laboratory, Materials and Manufacturing Directorate, Ohio, OH, 45433-7707, USA; Source Info: 2010, p73; Author-Supplied Keyword: Bioelectric phenomena; Author-Supplied Keyword: BioFET; Author-Supplied Keyword: BioLED; Author-Supplied Keyword: Biomolecular electronics; Author-Supplied Keyword: OFET; Author-Supplied Keyword: OLED; Author-Supplied Keyword: Organic electronics; Author-Supplied Keyword: Photonic devices; Author-Supplied Keyword: Plastic electronics; Number of Pages: 40p; Document Type: Article L3 - 10.1007/12_2009_6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=76716942&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hoffman, Stuart W. AU - Harrison, Catherine T1 - The Interaction between Psychological Health and Traumatic Brain Injury: A Neuroscience perspective. JO - Clinical Neuropsychologist JF - Clinical Neuropsychologist Y1 - 2009/11// VL - 23 IS - 8 M3 - Article SP - 1400 EP - 1415 SN - 13854046 AB - The occurrence of traumatic brain injury (TBI) and psychological health issues in the current theater of military operations has become a major factor in planning for the long-term healthcare of our wounded warriors. Post-traumatic stress disorder (PTSD) can co-exist with brain injury in military members who have been exposed to blasts. Specific areas of the brain may be more susceptible to damage from blasts. In particular, damage to the prefrontal cortex can lead to disinhibition of cerebral structures that control fear and anxiety. Reactive systemic inflammatory processes related to TBI may also impair psychological health. Impaired psychological health may lead to increased psychological distress that impedes brain repair due to the release of stress-related hormones. Since the external environment has been shown to exert a significant influence on the internal environment of the organism, enriching the external environment may well reduce anxiety and facilitate the neuroplasticity of brain cells, thus promoting recovery of function after TBI. [ABSTRACT FROM AUTHOR] AB - Copyright of Clinical Neuropsychologist is the property of Psychology Press (UK) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BRAIN -- Wounds & injuries KW - POST-traumatic stress disorder KW - MEDICAL care KW - FRONTAL lobes KW - PREFRONTAL cortex KW - Brain injury KW - Depression KW - Enriched environment KW - Inflammation KW - Post-traumatic stress disorder N1 - Accession Number: 44892934; Hoffman, Stuart W. 1; Email Address: shoffman@dvbic-lh.org Harrison, Catherine 2; Affiliation: 1: Henry M. Jackson Foundation for the Advancement of Military Medicine Defense and Veterans Brain Injury Center-Johnstown, PA. 2: Air Force Research Laboratory, Wright Patterson Air Force Base, OH, USA.; Source Info: Nov2009, Vol. 23 Issue 8, p1400; Subject Term: BRAIN -- Wounds & injuries; Subject Term: POST-traumatic stress disorder; Subject Term: MEDICAL care; Subject Term: FRONTAL lobes; Subject Term: PREFRONTAL cortex; Author-Supplied Keyword: Brain injury; Author-Supplied Keyword: Depression; Author-Supplied Keyword: Enriched environment; Author-Supplied Keyword: Inflammation; Author-Supplied Keyword: Post-traumatic stress disorder; Number of Pages: 16p; Document Type: Article L3 - 10.1080/13854040903369433 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44892934&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Brissett, Wilson T1 - Edward Taylor's Public Devotions. JO - Early American Literature JF - Early American Literature Y1 - 2009/11// VL - 44 IS - 3 M3 - Essay SP - 457 EP - 487 PB - University of North Carolina Press SN - 00128163 AB - This essay discusses the literary and philosophical aesthetics of New England Puritan pastor Edward Taylor. The essay descries the intersection of Puritan religious and materialist cultures with Taylor's aesthetic sense, focusing on Taylor's book "Preparatory Meditations," a poetical devotional manual. Other subjects under discussion include the Puritan understanding of beauty and its relation to spiritual development and transformation, the social aspects of poetry and the ways in which the concept of beauty affected religious life in Massachusetts, and the poetical aspects of Taylor's writing. KW - AESTHETICS -- Religious aspects -- Christianity KW - AESTHETICS -- Social aspects KW - AMERICAN devotional literature KW - AMERICAN poetry -- Colonial period, ca. 1600-1775 KW - PURITANS KW - HISTORY KW - COLONIAL period, ca. 1600-1775 KW - MASSACHUSETTS -- Social life & customs -- To 1775 KW - MASSACHUSETTS KW - TAYLOR, Edward, 1642-1729 KW - PREPARATORY Meditations (Poem : Taylor) N1 - Accession Number: 44810539; Brissett, Wilson 1; Affiliation: 1: United States Air Force Academy; Source Info: Nov2009, Vol. 44 Issue 3, p457; Subject Term: AESTHETICS -- Religious aspects -- Christianity; Subject Term: AESTHETICS -- Social aspects; Subject Term: AMERICAN devotional literature; Subject Term: AMERICAN poetry -- Colonial period, ca. 1600-1775; Subject Term: PURITANS; Subject Term: HISTORY; Subject Term: COLONIAL period, ca. 1600-1775; Subject Term: MASSACHUSETTS -- Social life & customs -- To 1775; Subject Term: MASSACHUSETTS; Reviews & Products: PREPARATORY Meditations (Poem : Taylor); People: TAYLOR, Edward, 1642-1729; Number of Pages: 31p; Document Type: Essay UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44810539&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mudaliar, Saba T1 - Some Issues With Using Radiative Transfer Approach to Scattering From Layered Random Media With Rough Interfaces. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2009/11// VL - 57 IS - 11 M3 - Article SP - 3646 EP - 3654 SN - 0018926X AB - The radiative transfer (RT) approach is widely used in applications involving scattering from layered random media with rough interfaces. Although it has been successful in several disciplines it is well known that this approach involves certain approximations. In this paper these assumptions and approximations are reexamined. To enable this a statistical wave approach is employed to this problem and the governing equations for the first and second moments of the wave functions are derived. A transition is hence made to arrive at a system of equations corresponding to that of the RT approach. It is hence found that more conditions are implicitly involved in the RT approach than generally believed to be sufficient. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATIVE transfer KW - INTERFACES (Physical sciences) KW - APPROXIMATION theory KW - HYPOTHESIS KW - THEORY of equations KW - MULTIPLE scattering (Physics) KW - Multilayer KW - radiative transfer KW - random media KW - rough surfaces KW - statistical wave approach N1 - Accession Number: 51450548; Mudaliar, Saba 1; Email Address: saba.mudaliar@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA 01731-2909 USA; Source Info: Nov2009, Vol. 57 Issue 11, p3646; Subject Term: RADIATIVE transfer; Subject Term: INTERFACES (Physical sciences); Subject Term: APPROXIMATION theory; Subject Term: HYPOTHESIS; Subject Term: THEORY of equations; Subject Term: MULTIPLE scattering (Physics); Author-Supplied Keyword: Multilayer; Author-Supplied Keyword: radiative transfer; Author-Supplied Keyword: random media; Author-Supplied Keyword: rough surfaces; Author-Supplied Keyword: statistical wave approach; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TAP.2009.2031913 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51450548&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fleming, Timothy P. AU - Mardahl, Peter J. T1 - Performance Improvements in the Relativistic Magnetron: The Effect of DC Field Perturbations. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2009/11// VL - 37 IS - 11 M3 - Article SP - 2128 EP - 2138 SN - 00933813 AB - The effect of using a shaped or transparent cathode to enhance key performance parameters in the Michigan magnetron, such as output power, power efficiency, and mode purity, was examined using a massively parallel electromagnetic particle-in-cell code Improved Concurrent Electromagnetic Particle-In-Cell. In simulations, we saw a dramatic increase in the range of magnetic field and input voltage over which the magnetron functions, an increase in output power, an increase in efficiency, an elimination of mode competition, and immediate start-up for both the shaped and transparent cathodes relative to the standard cathode. These simulations also revealed that the mechanism that is responsible for the improved performance that accompanies the transparent cathode may not be RF-azimuthal-field penetration but rather perturbations in the "dc" field resulting from the design of the novel cathodes themselves. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - ELECTRIC power distribution -- Direct current KW - DIRECT currents KW - ELECTRIC circuits -- Direct current KW - ELECTRIC fields KW - MAGNETIC fields KW - FIELD theory (Physics) KW - Cathodes KW - magnetron KW - microwave tube N1 - Accession Number: 45637370; Fleming, Timothy P. 1; Email Address: timothy.fleming@kirtland.af.mil Mardahl, Peter J. 1; Email Address: peter.mardahl@kirtland.af.mil; Affiliation: 1: Air Force Research Laboratory, Albuquerque, NM 87117 USA; Source Info: Nov2009, Vol. 37 Issue 11, p2128; Subject Term: MAGNETRONS; Subject Term: ELECTRIC power distribution -- Direct current; Subject Term: DIRECT currents; Subject Term: ELECTRIC circuits -- Direct current; Subject Term: ELECTRIC fields; Subject Term: MAGNETIC fields; Subject Term: FIELD theory (Physics); Author-Supplied Keyword: Cathodes; Author-Supplied Keyword: magnetron; Author-Supplied Keyword: microwave tube; NAICS/Industry Codes: 221122 Electric Power Distribution; Number of Pages: 11p; Illustrations: 1 Black and White Photograph, 12 Graphs; Document Type: Article L3 - 10.1109/TPS.2009.2030579 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45637370&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - LeVan, Paul D. AU - Beecken, Brian P. T1 - Hyperspectral opportunities with next-generation QSIP arrays JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2009/11// VL - 52 IS - 6 M3 - Article SP - 361 EP - 363 SN - 13504495 AB - Abstract: Hyperspectral applications that employ gratings typically exploit only one grating order, since other orders that emerge from the grating at the same angle of dispersion would corrupt the spectrum measured with conventional FPAs. Previously, dualband infrared focal plane arrays (FPA), developed for multi-spectral imaging applications, have demonstrated advantages over conventional multi-FPA sensor configurations in compactness and band-to-band pixel registration. In addition, dualband and multiband FPA architectures of Quantum Structure Infrared Photodetector (QSIP) technology would enable applications beyond simple multi-spectral imaging. For example, In the case of dual- (or multi-) waveband FPAs, the different grating orders can be paired with the FPA wavebands, allowing high efficiency hyperspectral imaging over very broad wavelength regions. Exploiting the “third dimension” of FPA detecting layers for this type of hyperspectral application has been demonstrated previously. As time progresses, multi-waveband FPAs are expected to provide an increase in spectral information at the pixel level without the need for external (e.g. dispersive) optical elements. As the number of wavebands increases to the point of providing spectral overlap of adjacent spectral resolution elements, hyperspectral capability is then achieved by the FPA acting alone. This technology may someday become possible through advanced QSIP architectures having photons of different wavelength continuously absorbed at different depths, and their resulting photocurrents isolated with a vertical grid of contacts or an equivalent mechanism for transporting depth-dependent signal photocurrent to a read-out circuit unit cell. [Copyright &y& Elsevier] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FOCAL planes KW - MOLECULAR beams KW - INFRARED detectors KW - OPTOELECTRONIC devices KW - WAVELENGTHS KW - LENGTH measurement KW - Focal plane array KW - Hyperspectral KW - Infrared KW - Molecular beam epitaxy KW - Multi-waveband N1 - Accession Number: 45643126; LeVan, Paul D. 1; Email Address: paul.levan@kirtland.af.mil Beecken, Brian P. 2; Affiliation: 1: Air Force Research Laboratory;AFRL/RVSS, Kirtland AFB, NM 87117-5776, USA 2: Department of Physics, Bethel University, 3900 Bethel Drive, St. Paul, MN 55112-6999, USA; Source Info: Nov2009, Vol. 52 Issue 6, p361; Subject Term: FOCAL planes; Subject Term: MOLECULAR beams; Subject Term: INFRARED detectors; Subject Term: OPTOELECTRONIC devices; Subject Term: WAVELENGTHS; Subject Term: LENGTH measurement; Author-Supplied Keyword: Focal plane array; Author-Supplied Keyword: Hyperspectral; Author-Supplied Keyword: Infrared; Author-Supplied Keyword: Molecular beam epitaxy; Author-Supplied Keyword: Multi-waveband; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.infrared.2009.05.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45643126&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gunapala, S.D. AU - Bandara, S.V. AU - Liu, J.K. AU - Mumolo, J.M. AU - Ting, D.Z. AU - Hill, C.J. AU - Nguyen, J. AU - Simolon, B. AU - Woolaway, J. AU - Wang, S.C. AU - Li, W. AU - LeVan, P.D. AU - Tidrow, M.Z. T1 - 1024×1024 Format pixel co-located simultaneously readable dual-band QWIP focal plane JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2009/11// VL - 52 IS - 6 M3 - Article SP - 395 EP - 398 SN - 13504495 AB - Abstract: This paper reports the first demonstration of the megapixel-simultaneously-readable and pixel-co-registered dual-band quantum well infrared photodetector (QWIP) focal plane array (FPA). The dual-band QWIP device was developed by stacking two multi-quantum-well stacks tuned to absorb two different infrared wavelengths. The full width at half maximum (FWHM) of the mid-wave infrared (MWIR) band extends from 4.4 to 5.1μm and the FWHM of a long-wave infrared (LWIR) band extends from 7.8 to 8.8μm. Dual-band QWIP detector arrays were hybridized with custom fabricated direct injection read out integrated circuits (ROICs) using the indium bump hybridization technique. The initial dual-band megapixel QWIP FPAs were cooled to 70K operating temperature. The preliminary data taken from the first megapixel QWIP FPA has shown system NEΔT of 27 and 40mK for MWIR and LWIR bands, respectively. [Copyright &y& Elsevier] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFRARED detectors KW - QUANTUM wells KW - FOCAL planes KW - INFRARED imaging KW - DETECTORS KW - IMAGING systems KW - Dualband KW - Focal plane arrays KW - Infrared detectors KW - Infrared imaging KW - Quantum wells KW - QWIP N1 - Accession Number: 45643132; Gunapala, S.D. 1; Email Address: sarath.d.gunapala@jpl.nasa.gov Bandara, S.V. 1 Liu, J.K. 1 Mumolo, J.M. 1 Ting, D.Z. 1 Hill, C.J. 1 Nguyen, J. 1 Simolon, B. 2 Woolaway, J. 2 Wang, S.C. 3 Li, W. 3 LeVan, P.D. 4 Tidrow, M.Z. 5; Affiliation: 1: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA 2: FLIR Systems Inc., Indigo Operations, 70 Castilian Dr., Goleta, CA 93117, USA 3: Global Communication Semiconductors, Inc. Torrance, CA 90505, USA 4: Air Force Research Laboratory, Kirtland Air Force Base, NM 87117, USA 5: Missile Defense Agency/AS, 7100 Defense Pentagon, Washington, DC 20301, USA; Source Info: Nov2009, Vol. 52 Issue 6, p395; Subject Term: INFRARED detectors; Subject Term: QUANTUM wells; Subject Term: FOCAL planes; Subject Term: INFRARED imaging; Subject Term: DETECTORS; Subject Term: IMAGING systems; Author-Supplied Keyword: Dualband; Author-Supplied Keyword: Focal plane arrays; Author-Supplied Keyword: Infrared detectors; Author-Supplied Keyword: Infrared imaging; Author-Supplied Keyword: Quantum wells; Author-Supplied Keyword: QWIP; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.infrared.2009.05.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45643132&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Holtz, Ronald AU - Pommier, Sylvie AU - Bache, Martin AU - Morrissey, Ryan AU - Urban, Michael T1 - The Seventh International Conference on Fatigue Damage of Structural Materials JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2009/11// VL - 31 IS - 11/12 M3 - Editorial SP - 1629 EP - 1629 SN - 01421123 N1 - Accession Number: 44010911; Holtz, Ronald 1; Email Address: ronald.holtz@nrl.navy.mil Pommier, Sylvie 2 Bache, Martin 3 Morrissey, Ryan 4 Urban, Michael 5; Affiliation: 1: Naval Research Laboratory, USA 2: LMT-Cachan, France 3: Swansea University, UK 4: Air Force Research Laboratory, USA 5: Sikorsky Aircraft, USA; Source Info: Nov2009, Vol. 31 Issue 11/12, p1629; Number of Pages: 1p; Document Type: Editorial L3 - 10.1016/j.ijfatigue.2009.02.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44010911&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morrissey, Ryan J. AU - John, Reji AU - John Porter, W. T1 - Fatigue variability of a single crystal superalloy at elevated temperature JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2009/11// VL - 31 IS - 11/12 M3 - Article SP - 1758 EP - 1763 SN - 01421123 AB - Abstract: In order to develop more accurate life prediction tools, an improved understanding of the variability within the fatigue behavior of a material is required. Recent work has shown multiple failure mechanisms that drive the variability in fatigue life of polycrystalline titanium and nickel materials. In addition, the bimodal behavior in the fatigue response is not readily apparent when only a very small number of specimens are tested at each loading condition, as is normal practice. The objective of this work was to investigate the fatigue variability of a single crystal nickel-base superalloy at elevated temperature. PWA1484, a second generation single crystal alloy developed for advanced turbine airfoil applications, was the material of choice for this investigation. A large number of fatigue tests were performed at one condition (stress level, stress ratio, frequency and temperature) to determine the variability and identify the sources of uncertainty in life. Scanning electron microscopy was used to investigate the relationship between failure mechanisms and variability. Crack growth analyses were used to predict lowest life estimates and were compared to experimental data. The results show large variability in fatigue life at fairly high stresses. Evaluation of the fracture surfaces indicated that microstructural features such as carbides and eutectics were responsible for the failures. In addition, the size of the feature responsible for fatigue failure could not be directly related to the fatigue life. The lowest expected life based on fatigue crack growth analyses did agree with the shortest life found experimentally. However, more testing and analysis is required. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALLOYS -- Fatigue KW - HEAT resistant alloys KW - CRYSTALS KW - HIGH temperatures KW - SERVICE life (Engineering) KW - PREDICTION models KW - STRUCTURAL failures KW - TITANIUM alloys KW - NICKEL alloys KW - Fatigue KW - Single crystal KW - Superalloy KW - Temperature KW - Variability N1 - Accession Number: 44010927; Morrissey, Ryan J. 1; Email Address: ryan.morrissey@wpafb.af.mil John, Reji 1 John Porter, W. 2; Affiliation: 1: US Air Force Research Laboratory, AFRL/RXLMN, Materials and Manufacturing Directorate, Wright–Patterson AFB, OH 45433, USA 2: University of Dayton Research Institute, Dayton, OH 45469, USA; Source Info: Nov2009, Vol. 31 Issue 11/12, p1758; Subject Term: ALLOYS -- Fatigue; Subject Term: HEAT resistant alloys; Subject Term: CRYSTALS; Subject Term: HIGH temperatures; Subject Term: SERVICE life (Engineering); Subject Term: PREDICTION models; Subject Term: STRUCTURAL failures; Subject Term: TITANIUM alloys; Subject Term: NICKEL alloys; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Single crystal; Author-Supplied Keyword: Superalloy; Author-Supplied Keyword: Temperature; Author-Supplied Keyword: Variability; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.ijfatigue.2009.03.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44010927&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Golden, Patrick J. AU - John, Reji AU - Porter, W. John T1 - Variability in room temperature fatigue life of alpha+beta processed Ti–6Al–4V JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2009/11// VL - 31 IS - 11/12 M3 - Article SP - 1764 EP - 1770 SN - 01421123 AB - Abstract: The variability in fatigue behavior is often what drives the design of components such as turbine engine blades and disks. These components are critical and must be designed with a very low probability of failure over the lifetime of the system. To meet that design criterion, the lower limit of fatigue life capability is typically used. The challenge is to reliably predict the lower limit of fatigue behavior. This study investigates the fatigue variability of an alpha+beta processed Ti–6Al–4V turbine engine alloy by conducting a statistically significant number of repeated tests at a few conditions. Testing includes three conditions including two maximum stresses, 675 and 635MPa; and two surface conditions, electropolished and low stress grinding. All tests are constant amplitude with a stress ratio of 0.1. A similar approach has been performed on several other turbine engine material systems often revealing a bimodal behavior. It is proposed that crack propagation using small crack growth data can be used to predict the low life behavior mode and is demonstrated with the Ti–6Al–4V data. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EFFECT of temperature on titanium alloys KW - TITANIUM alloys -- Fatigue KW - TURBINES -- Blades KW - ENGINEERING design KW - SERVICE life (Engineering) KW - STRUCTURAL failures KW - RELIABILITY (Engineering) KW - Fatigue crack growth KW - Fatigue nucleation KW - Life variability KW - Small crack growth KW - Ti–6Al–4V N1 - Accession Number: 44010928; Golden, Patrick J. 1; Email Address: patrick.golden@wpafb.af.mil John, Reji 1 Porter, W. John 2; Affiliation: 1: US Air Force Research Laboratory, AFRL/RXLMN, Wright-Patterson AFB, OH 45433, USA 2: University of Dayton Research Institute, Dayton, OH 45469, USA; Source Info: Nov2009, Vol. 31 Issue 11/12, p1764; Subject Term: EFFECT of temperature on titanium alloys; Subject Term: TITANIUM alloys -- Fatigue; Subject Term: TURBINES -- Blades; Subject Term: ENGINEERING design; Subject Term: SERVICE life (Engineering); Subject Term: STRUCTURAL failures; Subject Term: RELIABILITY (Engineering); Author-Supplied Keyword: Fatigue crack growth; Author-Supplied Keyword: Fatigue nucleation; Author-Supplied Keyword: Life variability; Author-Supplied Keyword: Small crack growth; Author-Supplied Keyword: Ti–6Al–4V; NAICS/Industry Codes: 541330 Engineering Services; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijfatigue.2009.01.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44010928&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiao, C.Q. AU - Boatz, J.A. AU - DeJoseph, C.A. AU - Garscadden, A. T1 - Condensation reaction of C4H4+ with pyridine JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2009/11// VL - 288 IS - 1-3 M3 - Article SP - 22 EP - 35 SN - 13873806 AB - Abstract: C4H4+ reacts with pyridine (C5H5N) via the channels of proton transfer, charge transfer and condensation with H-elimination. The condensation reaction is of general interest in terms of basic chemistry and is the focus of the present study. By means of theoretical calculations and Fourier transform mass spectrometer experiments using deuterated pyridine and substituted pyridines, the structure of the product ion and the reaction pathways are investigated. From the experimental results we find that the H atom that is eliminated can originate from either pyridine or C4H4+. The experiments show that elimination of an H atom from C4H4+ is preferred and that there is an observable kinetic isotope effect. By replacing H atoms with methyl groups in ortho positions of pyridine, the experimental results also suggest possible steric blocking to the condensation. Based on the experimental observations and results of theoretical calculations of several possible structures of intermediates, transition states, and final product ions, a possible reaction scheme for the condensation-H-elimination is discussed. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CUMULENES KW - CONDENSATION KW - ELIMINATION reactions KW - CHARGE transfer KW - PROTON transfer reactions KW - MASS spectrometers KW - PYRIDINE KW - METHYL groups KW - Charge transfer KW - Condensation KW - GAMESS KW - Isotope effect KW - Proton transfer N1 - Accession Number: 44943153; Jiao, C.Q. 1 Boatz, J.A. 2 DeJoseph, C.A. 3 Garscadden, A. 3; Email Address: alan.garscadden@wpafb.af.mil; Affiliation: 1: Innovative Scientific Solutions Inc., Dayton, OH 45440, USA 2: Air Force Research Laboratory, Edwards AFB, CA 93524, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Nov2009, Vol. 288 Issue 1-3, p22; Subject Term: CUMULENES; Subject Term: CONDENSATION; Subject Term: ELIMINATION reactions; Subject Term: CHARGE transfer; Subject Term: PROTON transfer reactions; Subject Term: MASS spectrometers; Subject Term: PYRIDINE; Subject Term: METHYL groups; Author-Supplied Keyword: Charge transfer; Author-Supplied Keyword: Condensation; Author-Supplied Keyword: GAMESS; Author-Supplied Keyword: Isotope effect; Author-Supplied Keyword: Proton transfer; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.ijms.2009.07.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44943153&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blake, William AU - Gotwald, Carl AU - Mayor, Michael AU - Cunningham, Thomas T1 - Lateral Stability of High Wing Configurations. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2009/11//Nov/Dec2009 VL - 46 IS - 6 M3 - Article SP - 2176 EP - 2178 SN - 00218669 AB - The article focuses on a study which developed a closed-form expression for elliptically loaded wings that matches prior approximations for conventional configurations while also giving the correct trends for large body configurations. Lateral stability is influenced by the vertical position of a wing on a body. The results of a wind-tunnel test at the U.S. Air Force Academy Subsonic Wind Tunnel indicate that the Levacic method is superior over other approximation methods for determining the correct trend for large diameter-to-span ratio. KW - APPROXIMATION theory KW - AIRPLANE wings KW - DIAMETER (Geometry) KW - AERODYNAMIC load KW - WIND tunnels KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 47799355; Blake, William 1 Gotwald, Carl 2 Mayor, Michael 2 Cunningham, Thomas 2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: U.S. Air Force Academy, Colorado Springs, Colorado 80848; Source Info: Nov/Dec2009, Vol. 46 Issue 6, p2176; Subject Term: APPROXIMATION theory; Subject Term: AIRPLANE wings; Subject Term: DIAMETER (Geometry); Subject Term: AERODYNAMIC load; Subject Term: WIND tunnels; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 928110 National Security; Number of Pages: 3p; Illustrations: 1 Black and White Photograph, 3 Graphs; Document Type: Article L3 - 10.2514/1.44911 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47799355&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Zheng, Yihua AU - Zhang, Yongliang AU - Kozyra, Janet U. AU - Albert, Jay AU - Bortnik, Jacob AU - Gallagher, Dennis L. AU - Kessel, Ramona L. T1 - Toward an integrated view of inner magnetosphere and radiation belts JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2009/11// VL - 71 IS - 16 M3 - Editorial SP - 1613 EP - 1613 SN - 13646826 N1 - Accession Number: 44585341; Zheng, Yihua; Email Address: yihua.zheng@jhuapl.edu Zhang, Yongliang 1 Kozyra, Janet U. 2 Albert, Jay 3 Bortnik, Jacob 4 Gallagher, Dennis L. 5 Kessel, Ramona L. 6; Affiliation: 1: Johns Hopkins University Applied Physics Laboratory, 11100, Johns Hopkins Road, Laurel, MD 20723, USA 2: Atmospheric, Oceanic, and Space Sciences Department, University of Michigan, Ann Arbor, MI USA 3: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, MA USA 4: Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA USA 5: Space Science Department, National Space Science and Technology Center, NASA Marshall Space Flight Center, Huntsville, AL USA 6: NASA Goddard Space Flight Center, Greenbelt, MD USA; Source Info: Nov2009, Vol. 71 Issue 16, p1613; Number of Pages: 1p; Document Type: Editorial L3 - 10.1016/j.jastp.2009.04.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44585341&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, C.Y. AU - Burke, W.J. AU - Lin, C.S. T1 - Two observed consequences of penetration electric fields JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2009/11// VL - 71 IS - 16 M3 - Article SP - 1614 EP - 1622 SN - 13646826 AB - Abstract: The influence of penetration electric fields (PEF) on storm-time energetic particles in the inner magnetosphere and on the stability of plasma in the low-latitude ionosphere is widely recognized. We describe two consequences of PEFs, regularly observed during magnetic storms that indicate their persistence throughout the main phases. These are (1) the presence of equatorial plasma bubbles (EPB) across the evening local time sector during main phases and their absence throughout recovery, and (2) detections of low-energy ion precipitation in the dawn sector equatorward of the auroral electron boundary. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC fields KW - PENETRATION mechanics KW - TRAJECTORIES (Mechanics) KW - MAGNETIC storms KW - AURORAS KW - SOLAR energetic particles KW - IONOSPHERE KW - PRECIPITATION (Chemistry) KW - Low-latitude precipitation KW - Magnetic storms KW - Particle trajectories KW - Penetration electric fields N1 - Accession Number: 44585342; Huang, C.Y. 1; Email Address: afrl.rvb.pa@hanscom.af.mil Burke, W.J. 1,2 Lin, C.S. 1; Affiliation: 1: Air Force Research Laboratory Space Vehicles Directorate, AFRL/RVBXP, 29 Randolph Road, Hanscom AFB, MA 01731-3010, USA 2: Boston College Institute for Scientific Research, USA; Source Info: Nov2009, Vol. 71 Issue 16, p1614; Subject Term: ELECTRIC fields; Subject Term: PENETRATION mechanics; Subject Term: TRAJECTORIES (Mechanics); Subject Term: MAGNETIC storms; Subject Term: AURORAS; Subject Term: SOLAR energetic particles; Subject Term: IONOSPHERE; Subject Term: PRECIPITATION (Chemistry); Author-Supplied Keyword: Low-latitude precipitation; Author-Supplied Keyword: Magnetic storms; Author-Supplied Keyword: Particle trajectories; Author-Supplied Keyword: Penetration electric fields; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jastp.2008.09.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44585342&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Albert, J.M. AU - Shprits, Y.Y. T1 - Estimates of lifetimes against pitch angle diffusion JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2009/11// VL - 71 IS - 16 M3 - Article SP - 1647 EP - 1652 SN - 13646826 AB - Abstract: We consider timescales on which particle distributions respond to pitch angle diffusion. On the longest timescale, the distribution decays at a single rate independent of equatorial pitch angle , even though the diffusion coefficient, and the distribution itself, may vary greatly with . We derive a simple integral expression to approximate this decay rate and show that it gives good agreement with the full expression. The roles of both the minimum and loss cone values of the diffusion coefficient are demonstrated and clarified. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ESTIMATES KW - DIFFUSION KW - INTEGRALS KW - RADIOACTIVE decay KW - APPROXIMATION theory KW - ATMOSPHERIC physics KW - Decay rate KW - Lifetime KW - Pitch angle diffusion N1 - Accession Number: 44585346; Albert, J.M. 1; Email Address: jay.albert@hanscom.af.mil Shprits, Y.Y. 2; Email Address: yshprits@atmos.ucla.edu; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom Air Force Base, MA 01731-3010, USA 2: Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA, USA; Source Info: Nov2009, Vol. 71 Issue 16, p1647; Subject Term: ESTIMATES; Subject Term: DIFFUSION; Subject Term: INTEGRALS; Subject Term: RADIOACTIVE decay; Subject Term: APPROXIMATION theory; Subject Term: ATMOSPHERIC physics; Author-Supplied Keyword: Decay rate; Author-Supplied Keyword: Lifetime; Author-Supplied Keyword: Pitch angle diffusion; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jastp.2008.07.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44585346&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Albert, Jay M. T1 - The coupling of quasi-linear pitch angle and energy diffusion JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2009/11// VL - 71 IS - 16 M3 - Article SP - 1664 EP - 1668 SN - 13646826 AB - Abstract: Wave–particle interactions are described in the quasi-linear formulation by bounce-averaged diffusion coefficients for equatorial pitch angle and for momentum , along with a mixed or cross diffusion coefficient . Because the cross terms complicate the associated time-dependent diffusion equation, and because has a somewhat unfamiliar character (e.g., it may be negative), it has frequently been omitted in numerical simulations of multidimensional diffusion. Generally, becomes increasingly important for small values of , as does , and for small widths of the wave frequency and wavenormal angle distributions. Here we use very simple models of diffusion to investigate the effect of the cross terms, and to demonstrate numerical problems associated with them. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVE mechanics KW - COLLISIONS (Physics) KW - DIFFUSION KW - QUASILINEARIZATION KW - MOMENTUM (Mechanics) KW - COMPUTER simulation KW - Cross diffusion KW - Diffusion coefficients KW - Wave–particle interactions N1 - Accession Number: 44585348; Albert, Jay M. 1; Email Address: jay.albert@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom AFB, MA 01731-3010, USA; Source Info: Nov2009, Vol. 71 Issue 16, p1664; Subject Term: WAVE mechanics; Subject Term: COLLISIONS (Physics); Subject Term: DIFFUSION; Subject Term: QUASILINEARIZATION; Subject Term: MOMENTUM (Mechanics); Subject Term: COMPUTER simulation; Author-Supplied Keyword: Cross diffusion; Author-Supplied Keyword: Diffusion coefficients; Author-Supplied Keyword: Wave–particle interactions; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jastp.2008.11.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44585348&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Choi, Wonjae AU - Tuteja, Anish AU - Mabry, Joseph M. AU - Cohen, Robert E. AU - McKinley, Gareth H. T1 - A modified Cassie–Baxter relationship to explain contact angle hysteresis and anisotropy on non-wetting textured surfaces JO - Journal of Colloid & Interface Science JF - Journal of Colloid & Interface Science Y1 - 2009/11// VL - 339 IS - 1 M3 - Article SP - 208 EP - 216 SN - 00219797 AB - Abstract: The Cassie–Baxter model is widely used to predict the apparent contact angles obtained on composite (solid–liquid–air) superhydrophobic interfaces. However, the validity of this model has been repeatedly challenged by various research groups because of its inherent inability to predict contact angle hysteresis. In our recent work, we have developed robust omniphobic surfaces which repel a wide range of liquids. An interesting corollary of constructing such surfaces is that it becomes possible to directly image the solid–liquid–air triple-phase contact line on a composite interface, using an electron microscope with non-volatile organic liquids or curable polymers. Here, we fabricate a range of model superoleophobic surfaces with controlled surface topography in order to correlate the details of the local texture with the experimentally observed apparent contact angles. Based on these experiments, in conjunction with numerical simulations, we modify the classical Cassie–Baxter relation to include a local differential texture parameter which enables us to quantitatively predict the apparent advancing and receding contact angles, as well as contact angle hysteresis. This quantitative prediction also allows us to provide an a priori estimation of roll-off angles for a given textured substrate. Using this understanding we design model substrates that display extremely small or extremely large roll-off angles, as well as surfaces that demonstrate direction-dependent wettability, through a systematic control of surface topography and connectivity. [Copyright &y& Elsevier] AB - Copyright of Journal of Colloid & Interface Science is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROPHOBIC surfaces KW - CONTACT angle KW - HYSTERESIS KW - ANISOTROPY KW - TEXTURES KW - SURFACE chemistry KW - ELECTRONS KW - SUBSTRATES (Materials science) KW - Anisotropic wettability KW - Cassie–Baxter ( CB ) KW - Cassie–Baxter relation KW - Contact angle hysteresis KW - contact angle hysteresis ( CAH ) KW - Roll-off angle KW - Triple-phase contact line KW - triple-phase contact line ( TCL ) N1 - Accession Number: 44037419; Choi, Wonjae 1 Tuteja, Anish 2 Mabry, Joseph M. 3 Cohen, Robert E. 2; Email Address: recohen@mit.edu McKinley, Gareth H. 1; Email Address: gareth@mit.edu; Affiliation: 1: Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States 2: Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States 3: Air Force Research Laboratory, Propulsion Directorate, Edwards Air Force Base, CA 93524, United States; Source Info: Nov2009, Vol. 339 Issue 1, p208; Subject Term: HYDROPHOBIC surfaces; Subject Term: CONTACT angle; Subject Term: HYSTERESIS; Subject Term: ANISOTROPY; Subject Term: TEXTURES; Subject Term: SURFACE chemistry; Subject Term: ELECTRONS; Subject Term: SUBSTRATES (Materials science); Author-Supplied Keyword: Anisotropic wettability; Author-Supplied Keyword: Cassie–Baxter ( CB ); Author-Supplied Keyword: Cassie–Baxter relation; Author-Supplied Keyword: Contact angle hysteresis; Author-Supplied Keyword: contact angle hysteresis ( CAH ); Author-Supplied Keyword: Roll-off angle; Author-Supplied Keyword: Triple-phase contact line; Author-Supplied Keyword: triple-phase contact line ( TCL ); Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jcis.2009.07.027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44037419&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Yunjing AU - Pritchett, Timothy M. AU - Shao, Pin AU - Haley, Joy E. AU - Zhu, Hongjun AU - Sun, Wenfang T1 - Excited-state absorption of mono-, di- and tri-nuclear cyclometalated platinum 4,6-diphenyl-2,2′-bipyridyl complexes JO - Journal of Organometallic Chemistry JF - Journal of Organometallic Chemistry Y1 - 2009/11// VL - 694 IS - 23 M3 - Article SP - 3688 EP - 3691 SN - 0022328X AB - Abstract: The ground-state absorption cross-sections (σ g), triplet excited-state absorption cross-section (σ T) at 532nm, singlet excited-state absorption cross-sections (σ s) at various visible wavelengths, singlet and triplet excited-state lifetimes, and triplet quantum yields of three cyclometalated platinum(II) 4,6-diphenyl-2,2′-bipyridyl complexes, are reported. The presence of metal–metal and π–π interactions in the dinuclear and trinuclear complexes results in a significant increase in their respective σ g’s in the visible spectral region. As a result, the ratio of σ s/σ g and σ T/σ g at each wavelength is significantly greater for the mononuclear complex than for the dinuclear and the trinuclear complexes. [Copyright &y& Elsevier] AB - Copyright of Journal of Organometallic Chemistry is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXCITED state chemistry KW - ABSORPTION KW - ORGANOPLATINUM compounds KW - METAL complexes KW - PYRIDINE KW - BIPHENYL compounds KW - Cyclometalated platinum(II) 4,6-diphenyl-2,2′-bipyridyl complexes KW - Excited-state lifetime KW - Singlet excited-state absorption cross-section KW - Triplet excited-state absorption cross-section KW - Triplet quantum yield KW - Z-scan N1 - Accession Number: 44473427; Li, Yunjing 1 Pritchett, Timothy M. 2 Shao, Pin 1 Haley, Joy E. 3,4 Zhu, Hongjun 1 Sun, Wenfang 1; Email Address: Wenfang.Sun@ndsu.edu; Affiliation: 1: Department of Chemistry and Molecular Biology, North Dakota State University, Fargo, ND 58108-6050, USA 2: U.S. Army Research Laboratory, AMSRD-ARL-SE-EM, 2800 Powder Mill Road, Adelphi, MD 20783-1197, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA 4: UES Inc., Dayton, OH 45432, USA; Source Info: Nov2009, Vol. 694 Issue 23, p3688; Subject Term: EXCITED state chemistry; Subject Term: ABSORPTION; Subject Term: ORGANOPLATINUM compounds; Subject Term: METAL complexes; Subject Term: PYRIDINE; Subject Term: BIPHENYL compounds; Author-Supplied Keyword: Cyclometalated platinum(II) 4,6-diphenyl-2,2′-bipyridyl complexes; Author-Supplied Keyword: Excited-state lifetime; Author-Supplied Keyword: Singlet excited-state absorption cross-section; Author-Supplied Keyword: Triplet excited-state absorption cross-section; Author-Supplied Keyword: Triplet quantum yield; Author-Supplied Keyword: Z-scan; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jorganchem.2009.07.045 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44473427&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hengeveld, Derek W. AU - Braun, James E. AU - Groll, Eckhard A. AU - Williams, Andrew D. T1 - Hot- and Cold-Case Orbits for Robust Thermal Control. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2009/11//Nov/Dec2009 VL - 46 IS - 6 M3 - Article SP - 1249 EP - 1260 SN - 00224650 AB - Realizing cheaper, more flexible alternatives to traditional satellites requires robust design approaches. Robust satellite subsystems are designed to meet a broad range of mission requirements; consequently, they drastically reduce nonrecurring engineering costs and greatly diminish design, development, assembly, integration, and test schedules. Robust thermal control subsystems must be capable of handling a broad range of thermal environments, thus reducing design and development costs but can be susceptible to overdesign. Therefore, improved design methodologies are needed to maintain their advantages while minimizing excessive design. As a first step, design hot-and cold-case orbits should be examined. The primary goal of the study described in this paper was to identify single hot- and cold-case design orbits that work well in the design of robust thermal control subsystems over a wide range of satellite surface properties and likely operating environments. A general approach was developed to identify worst-case orbits that employ a combination of statistical and historical data such that statistically insignificant orbits are disregarded. Using this method, individual hot- and cold-case design orbits were found at beta angle/ inclination combinations of 72 deg/52 deg and 0 deg/28 deg, respectively. The use of these design orbits works well for a wide range of different satellite surface properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORBITS of artificial satellites KW - TEMPERATURE control KW - DESIGN KW - ENGINEERING -- Estimates KW - ORBITS N1 - Accession Number: 47560138; Hengeveld, Derek W. 1,2,3 Braun, James E. 1,4 Groll, Eckhard A. 1,4 Williams, Andrew D. 5,6,7; Affiliation: 1: Purdue University, West Lafayette, Indiana 47907 2: Research Assistant, School of Mechanical Engineering, Ray W. Herrick Laboratories, 140 S. Martin Jischke Drive, Purdue University, West Lafayette, Indiana 47907 3: Student Member AIAA 4: Professor, School of Mechanical Engineering, Ray W. Herrick Laboratories, 140 S. Martin Jischke Drive. 5: U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117 6: Research Scientist, Space Vehicles Directorate, 3550 Aberdeen Avenue SE. 7: Member AIAA; Source Info: Nov/Dec2009, Vol. 46 Issue 6, p1249; Subject Term: ORBITS of artificial satellites; Subject Term: TEMPERATURE control; Subject Term: DESIGN; Subject Term: ENGINEERING -- Estimates; Subject Term: ORBITS; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; Number of Pages: 12p; Illustrations: 1 Diagram, 9 Charts, 12 Graphs; Document Type: Article L3 - 10.2514/1.44468 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47560138&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tiley, J. AU - Srinivasan, R. AU - Banerjee, R. AU - Viswanathan, G. B. AU - Toby, B. AU - Fraser, H. L. T1 - Application of X-ray and neutron diffraction to determine lattice parameters and precipitate volume fractions in low misfit nickel base superralloys. JO - Materials Science & Technology JF - Materials Science & Technology Y1 - 2009/11// VL - 25 IS - 11 M3 - Article SP - 1369 EP - 1374 SN - 02670836 AB - Synchrotron X-ray diffraction and neutron diffraction techniques are employed to characterise the lattice parameters and volume fraction of γ and γ' phases in a high strength nickel base superalloy. Samples of Rene88DT were solutionised at 1150°C and cooled under three different rates to provide fine and coarse γ' size distributions. Samples were aged at 760°C to precipitate tertiary γ and coarsen secondary precipitates. Lattice parameter misfit and coefficient of thermal expansion parameters were also determined. Results indicate significant microstructure changes within the samples during the initial 25 h of aging. [ABSTRACT FROM AUTHOR] AB - Copyright of Materials Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYNCHROTRONS KW - X-rays KW - OPTICAL diffraction KW - NEUTRON diffraction KW - KIRKENDALL effect KW - HEAT resistant alloys KW - NICKEL KW - Lattice parameter KW - Neutron diffraction KW - Nickel base superalloys KW - X-ray diffraction N1 - Accession Number: 51500670; Tiley, J. 1 Srinivasan, R. 2 Banerjee, R. 3; Email Address: rajarshi.banerjee@unt.edu Viswanathan, G. B. 2 Toby, B. 4 Fraser, H. L. 2; Affiliation: 1: Air Force Research Laboratory, Metals Branch, AFRL/RXLMD, Wright Patterson AFB, OH 45309, USA 2: Centre for the Accelerated Maturation of Materials and Department of Materials Science and Engineering, The Ohio Stale University, Columbus, OH 43210, USA 3: Centre for Advanced Research and Technology and Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203, USA 4: Argonne National Laboratory, Argonne, IL 60439, USA; Source Info: Nov2009, Vol. 25 Issue 11, p1369; Subject Term: SYNCHROTRONS; Subject Term: X-rays; Subject Term: OPTICAL diffraction; Subject Term: NEUTRON diffraction; Subject Term: KIRKENDALL effect; Subject Term: HEAT resistant alloys; Subject Term: NICKEL; Author-Supplied Keyword: Lattice parameter; Author-Supplied Keyword: Neutron diffraction; Author-Supplied Keyword: Nickel base superalloys; Author-Supplied Keyword: X-ray diffraction; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 6p; Illustrations: 1 Diagram, 9 Graphs; Document Type: Article L3 - 10.1179/174328409X399010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51500670&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Steven A. Lane AU - Jacob A. Brown AU - Megan E. Tremer AU - Craig Uber AU - Elizabeth E. Gallagher AU - Steven R. Collins AU - Michael R. Benoit AU - William Miniscalco T1 - Radiation testing of liquid crystal optical devices for space laser communication. JO - Optical Engineering JF - Optical Engineering Y1 - 2009/11// VL - 48 IS - 11 M3 - Article SP - 114002 EP - 114002-11 SN - 00913286 AB - Liquid crystal optical phased arrays are an enabling technology for a variety of photonic and electronic beam manipulation functions, including steering, control of polarization, and amplitude and phase modulation. For applications in the emerging field of space laser communications, such devices would need to survive in the space environment for 10 to 15 years. To assess suitability and identify potential issues, a series of experiments were conducted in which nematic liquid crystal devices were subjected to three radiation environments: total dose (gamma), prompt dose (x rays), and fast neutrons. Tests were conducted using simple phase retarder devices, which served as surrogates for beamsteering devices. Impacts to optical and electrical characteristics of the devices at 1.55 mwere measured after incremental exposure trials. Modest effects were observed, but none were deemed significant enough to impact performance of the devices for space communication beamsteering applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystal displays KW - LASER communication systems KW - TABLE manipulation (Computer science) KW - NEMATOCIDES KW - RADIATION -- Dosage KW - NEUTRONS KW - PHOTONICS N1 - Accession Number: 45571596; Steven A. Lane 1 Jacob A. Brown 1 Megan E. Tremer 1 Craig Uber 1 Elizabeth E. Gallagher 1 Steven R. Collins 1 Michael R. Benoit 1 William Miniscalco 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Avenue South East, Kirtland Air Force Base, Albuquerque, New Mexico 87117-5776; Source Info: Nov2009, Vol. 48 Issue 11, p114002; Subject Term: LIQUID crystal displays; Subject Term: LASER communication systems; Subject Term: TABLE manipulation (Computer science); Subject Term: NEMATOCIDES; Subject Term: RADIATION -- Dosage; Subject Term: NEUTRONS; Subject Term: PHOTONICS; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45571596&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beachkofski, Brian K. T1 - Probabilistic rotor life assessment using reduced order models. JO - Shock & Vibration JF - Shock & Vibration Y1 - 2009/11// VL - 16 IS - 6 M3 - Article SP - 581 EP - 591 PB - Hindawi Publishing Corporation SN - 10709622 AB - Probabilistic failure assessments for integrally bladed disks are system reliability problems where a failure in at least one blade constitutes a rotor system failure. Turbine engine fan and compressor blade life is dominated by High Cycle Fatigue (HCF) initiated either by pure HCF or Foreign Object Damage (FOD). To date performing an HCF life assessment for the entire rotor system has been too costly in analysis time to be practical. Although the substantial run-time has previously precluded a full-rotor probabilistic analysis, reduced order models make this process tractable as demonstrated in this work. The system model includes frequency prediction, modal stress variation, mistuning amplification, FOD effect, and random material capability. The model has many random variables which are most easily handled through simple random sampling. [ABSTRACT FROM AUTHOR] AB - Copyright of Shock & Vibration is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TURBINES -- Vibration KW - FRACTURE mechanics KW - RESEARCH KW - FAILURE analysis (Engineering) KW - ROTORS -- Dynamics KW - LIFE cycle costing KW - FANS (Machinery) KW - COMPRESSORS -- Blades -- Vibration KW - STRUCTURAL failures KW - High cycle fatigue KW - probabilistic analysis KW - reduced order model KW - system reliability N1 - Accession Number: 45435150; Beachkofski, Brian K. 1; Affiliation: 1: Air Force Research Laboratory, Propulsion Directorate, 1950 5th Street, Wright-Patterson AFB, OH 45433, USA; Source Info: 2009, Vol. 16 Issue 6, p581; Subject Term: TURBINES -- Vibration; Subject Term: FRACTURE mechanics; Subject Term: RESEARCH; Subject Term: FAILURE analysis (Engineering); Subject Term: ROTORS -- Dynamics; Subject Term: LIFE cycle costing; Subject Term: FANS (Machinery); Subject Term: COMPRESSORS -- Blades -- Vibration; Subject Term: STRUCTURAL failures; Author-Supplied Keyword: High cycle fatigue; Author-Supplied Keyword: probabilistic analysis; Author-Supplied Keyword: reduced order model; Author-Supplied Keyword: system reliability; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; Number of Pages: 11p; Illustrations: 4 Diagrams, 1 Chart, 6 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45435150&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - CALHOUN, BYRON J. T1 - Captain Vere as Outsider and Insider: Military Leadership in Billy Budd, Sailor. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2009/11// VL - 21 IS - 1/2 M3 - Literary Criticism SP - 1 EP - 10 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents a literary criticism of the book "Billy Budd, Sailor," by Herman Melville, focusing on the character of Captain Vere, the insider-outsider dichotomy of his place within the social dynamics of the story, and its implications on the concept of military leadership. Questions are addressed regarding the choices of Captain Vere in ship discipline and the moral hazards of flexibility and the rule of law. KW - CRITICISM KW - COMMAND of troops KW - JUSTICE administration KW - MILITARY discipline KW - MORAL & ethical aspects KW - MELVILLE, Herman, 1819-1891 KW - BILLY Budd (Book : Melville) N1 - Accession Number: 48170354; CALHOUN, BYRON J. 1; Affiliation: 1: Instructor of English, United States Air Force Academy.; Source Info: 2009, Vol. 21 Issue 1/2, p1; Subject Term: CRITICISM; Subject Term: COMMAND of troops; Subject Term: JUSTICE administration; Subject Term: MILITARY discipline; Subject Term: MORAL & ethical aspects; Reviews & Products: BILLY Budd (Book : Melville); People: MELVILLE, Herman, 1819-1891; Number of Pages: 10p; Document Type: Literary Criticism UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48170354&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - LINGLE, BRANDON T1 - Colby Buzzell's My War: An Outsider's Voice from Inside Iraq. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2009/11// VL - 21 IS - 1/2 M3 - Literary Criticism SP - 11 EP - 20 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents a literary criticism of the book "My War: Killing Time in Iraq," by Colby Buzzell, and its manifestation as a 21st century picaresque narrative. Details are given defining the picaresque genre, noting its central theme of an "outsider" critiquing society through personal narrative. Buzzell's blogging of the Iraq War as described in his memoir is then analyzed within this framework. KW - CRITICISM KW - PICARESQUE literature KW - AMERICAN soldiers' writings KW - IRAQ War, 2003-2011 -- American personal narratives KW - BLOGS KW - HISTORY & criticism KW - BUZZELL, Colby KW - MY War: Killing Time in Iraq (Book) N1 - Accession Number: 48170355; LINGLE, BRANDON 1; Affiliation: 1: US Air Force Academy.; Source Info: 2009, Vol. 21 Issue 1/2, p11; Subject Term: CRITICISM; Subject Term: PICARESQUE literature; Subject Term: AMERICAN soldiers' writings; Subject Term: IRAQ War, 2003-2011 -- American personal narratives; Subject Term: BLOGS; Subject Term: HISTORY & criticism; Reviews & Products: MY War: Killing Time in Iraq (Book); NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; People: BUZZELL, Colby; Number of Pages: 10p; Document Type: Literary Criticism UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48170355&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - MATHIAS, ELIZABETH T1 - A Memorial to Forgetting: Libbie Custer's re-vision of General Custer's legacy. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2009/11// VL - 21 IS - 1/2 M3 - Article SP - 21 EP - 32 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents discussion concerning the dichotomy between the idealized figure of a hero and the practical realities of the individual, their motivations, and actions. The 19th century U.S. general George Armstrong Custer and his heroic legend within military history is analyzed as a case example. Details are given addressing the role of his wife Libbie Custer in promoting and advancing Custer's legacy and in facilitating the transition of the social perception of the man as a hero. KW - HEROES KW - COLLECTIVE memory KW - MILITARY history KW - TO 1900 KW - UNITED States KW - CUSTER, George A. (George Armstrong), 1839-1876 KW - CUSTER, Elizabeth Bacon, 1842-1933 N1 - Accession Number: 48170356; MATHIAS, ELIZABETH 1; Affiliation: 1: US Air Force Academy.; Source Info: 2009, Vol. 21 Issue 1/2, p21; Subject Term: HEROES; Subject Term: COLLECTIVE memory; Subject Term: MILITARY history; Subject Term: TO 1900; Subject Term: UNITED States; People: CUSTER, George A. (George Armstrong), 1839-1876; People: CUSTER, Elizabeth Bacon, 1842-1933; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48170356&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - GOOLSBY, JESSE T1 - What My Dead Wife Should Know. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2009/11// VL - 21 IS - 1/2 M3 - Short Story SP - 144 EP - 145 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents the short story "What My Dead Wife Should Know," by Jesse Goolsby. KW - SHORT story (Literary form) KW - GOOLSBY, Jesse KW - WHAT My Dead Wife Should Know (Short story) N1 - Accession Number: 48170372; GOOLSBY, JESSE 1; Affiliation: 1: United States Air Force Academy.; Source Info: 2009, Vol. 21 Issue 1/2, p144; Subject Term: SHORT story (Literary form); Reviews & Products: WHAT My Dead Wife Should Know (Short story); People: GOOLSBY, Jesse; Number of Pages: 2p; Document Type: Short Story UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48170372&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - MCGUIRE, THOMAS G. T1 - War, Tradition, Iconoclastic Talent: a conversation with Robert Mezey. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2009/11// VL - 21 IS - 1/2 M3 - Interview SP - 215 EP - 235 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents an interview with the American poet and critic Robert Mezey. An introduction is given describing Mezey's accomplishments and place within the community of 20th century American poets. Subjects discussed include Mezey's views on the tradition of war poetry, the challenging nature of occasional political poetry, and highlights from his favorite works. KW - AMERICAN poets KW - WAR & literature KW - WAR poetry KW - OCCASIONAL verse KW - 20TH century KW - INTERVIEWS KW - MEZEY, Robert -- Interviews N1 - Accession Number: 48170385; MCGUIRE, THOMAS G. 1; Affiliation: 1: Professor of English, United States Air Force Academy.; Source Info: 2009, Vol. 21 Issue 1/2, p215; Subject Term: AMERICAN poets; Subject Term: WAR & literature; Subject Term: WAR poetry; Subject Term: OCCASIONAL verse; Subject Term: 20TH century; Subject Term: INTERVIEWS; People: MEZEY, Robert -- Interviews; Number of Pages: 21p; Document Type: Interview UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48170385&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - MILLS, GARY T1 - Up-Armored. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2009/11// VL - 21 IS - 1/2 M3 - Article SP - 299 EP - 301 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents a first person narrative describing the author putting on body armor and reflecting about war. KW - FIRST person narrative KW - BODY armor N1 - Accession Number: 48170397; MILLS, GARY 1; Affiliation: 1: Assistant professor of English, United States Air Force Academy.; Source Info: 2009, Vol. 21 Issue 1/2, p299; Subject Term: FIRST person narrative; Subject Term: BODY armor; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48170397&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - LOYD, KRISTEN R. T1 - An England Worth Saving: The Domestication of World War II Propaganda in Pride and Prejudice. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2009/11// VL - 21 IS - 1/2 M3 - Opinion SP - 352 EP - 359 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents the author's reflections regarding the 1940 film adaptation of the novel "Pride and Prejudice," by Jane Austen, and its depiction of World War II propaganda for U.S. audiences. Details are given describing the film's portrayal of British domestic life in an effort to advocate for U.S. involvement within the war to aid Great Britain. Further discussion is given relating to the theme of women in wartime. KW - FILM adaptations KW - WORLD War, 1939-1945 KW - PROPAGANDA KW - WOMEN in war KW - HISTORY & criticism KW - AUSTEN, Jane, 1775-1817 KW - PRIDE & Prejudice (Film) N1 - Accession Number: 48170403; LOYD, KRISTEN R. 1; Affiliation: 1: English instructor, United States Air Force Academy.; Source Info: 2009, Vol. 21 Issue 1/2, p352; Subject Term: FILM adaptations; Subject Term: WORLD War, 1939-1945; Subject Term: PROPAGANDA; Subject Term: WOMEN in war; Subject Term: HISTORY & criticism; Reviews & Products: PRIDE & Prejudice (Film); People: AUSTEN, Jane, 1775-1817; Number of Pages: 8p; Document Type: Opinion UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48170403&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - PASQUANTONIO, SONJA T1 - I Dream My Brother Plays Baseball. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2009/11// VL - 21 IS - 1/2 M3 - Book Review SP - 408 EP - 415 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "I Dream My Brother Plays Baseball," by Lisa L. Siedlarz. KW - POETRY (Literary form) KW - POETRY collections KW - SIEDLARZ, Lisa L. KW - I Dream My Brother Plays Baseball (Book) N1 - Accession Number: 48170415; PASQUANTONIO, SONJA 1; Affiliation: 1: United States Air Force Academy.; Source Info: 2009, Vol. 21 Issue 1/2, p408; Subject Term: POETRY (Literary form); Subject Term: POETRY collections; Reviews & Products: I Dream My Brother Plays Baseball (Book); People: SIEDLARZ, Lisa L.; Number of Pages: 8p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48170415&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shi, Lei AU - Ermis, Ryan AU - Lam, Kan AU - Cowart, Jerry AU - Attar, Paul AU - Aust, Duncan T1 - Study on the debridement efficacy of formulated enzymatic wound debriding agents by in vitro assessment using artificial wound eschar and by an in vivo pig model. JO - Wound Repair & Regeneration JF - Wound Repair & Regeneration Y1 - 2009/11//Nov/Dec2009 VL - 17 IS - 6 M3 - Article SP - 853 EP - 862 PB - Wiley-Blackwell SN - 10671927 AB - An in vitro efficacy study using newly developed artificial wound eschar (AWE) substrate was conducted for assessing enzyme dose response. The AWE substrate is prepared by the enzymatic conversion of fibrinogen to fibrin in the presence of collagen, fibrin, and elastin to form an insoluble planar matrix. AWE substrate was placed on Franz Diffusion Cells for continuously monitoring the debridement progress. A parallel in vivo study was performed using pig thermal-burn wounds. Papain at concentrations of 200, 400, 800, and 1,600 U/mg was used as the model debriding enzyme for both studies. The data from the first 5 hours of the in vitro testing showed that debriding activity increased as the enzyme concentration increased. The histological results of the in vivo biopsy samples showed that enzyme doses above 800 and 1,600 U/mg successfully achieved debridement on day 8, while lower treatment groups still contained eschar tissue. Using the histological measurement results (wound depth score) a dose response that correlated to the in vitro assessment was found. Granulation tissue maturity and reepithelialization displayed correlation with the enzyme dose. Results indicate that AWE substrate can be used to predict debridement efficacy in vitro when correlation to the in vivo assessment is achieved. [ABSTRACT FROM AUTHOR] AB - Copyright of Wound Repair & Regeneration is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEBRIDEMENT KW - SWINE as laboratory animals KW - FIBRINOGEN KW - EXTRACELLULAR matrix proteins KW - WOUND healing N1 - Accession Number: 44883568; Shi, Lei 1; Email Address: lei.shi@healthpoint.com Ermis, Ryan 1 Lam, Kan 2 Cowart, Jerry 3 Attar, Paul 2 Aust, Duncan 1; Affiliation: 1: Research and Development, Healthpoint Ltd., Fort Worth, Texas. 2: Bridge PTS, San Antonio, Texas. 3: US Air Force Research Laboratory, Human Effectiveness Directorate, Brooks City-Base, Texas.; Source Info: Nov/Dec2009, Vol. 17 Issue 6, p853; Subject Term: DEBRIDEMENT; Subject Term: SWINE as laboratory animals; Subject Term: FIBRINOGEN; Subject Term: EXTRACELLULAR matrix proteins; Subject Term: WOUND healing; Number of Pages: 10p; Illustrations: 1 Color Photograph, 2 Diagrams, 7 Charts, 2 Graphs; Document Type: Article L3 - 10.1111/j.1524-475X.2009.00545.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44883568&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carney, Carmen M. T1 - Oxidation resistance of hafnium diboride—silicon carbide from 1400 to 2000 °C. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2009/10/15/ VL - 44 IS - 20 M3 - Article SP - 5673 EP - 5681 PB - Springer Science & Business Media B.V. SN - 00222461 AB - Oxidation resistance tests were carried out on HfB2-20 vol.% SiC prepared by spark plasma sintering. The dense samples were exposed from 1400 to 2000 °C in an ambient atmosphere for 1 h. For comparison, the same material was tested using an arc jet to simulate an atmospheric reentry environment. The oxidation properties of the samples were determined by measuring the weight gain per unit surface area and the thicknesses of the oxide scale. The oxide scale consists of a SiO2 outer layer, porous HfO2 layers, and an HfB2 layer depleted in SiC. A transition in HfO2 morphology from equixed to columnar and a decrease in SiO2 viscosity between 1800 and 1900 °C accompanied a rapid increase in weight gain and scale thickness. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXIDATION KW - SINTERING KW - POROUS materials KW - VISCOSITY KW - SILICON oxide N1 - Accession Number: 43886504; Carney, Carmen M. 1,2; Email Address: ccarney@ues.com; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Dayton, OH, USA 2: UES, Inc., Dayton, OH 45432, USA; Source Info: Oct2009, Vol. 44 Issue 20, p5673; Subject Term: OXIDATION; Subject Term: SINTERING; Subject Term: POROUS materials; Subject Term: VISCOSITY; Subject Term: SILICON oxide; NAICS/Industry Codes: 212210 Iron Ore Mining; Number of Pages: 9p; Illustrations: 3 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1007/s10853-009-3799-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43886504&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yakovlev, Vladislav V. AU - Petrov, Georgi I. AU - Zhang, Hao F. AU - Noojin, Gary D. AU - Denton, Michael L. AU - Thomas, Robert J. AU - Scully, Marlan O. T1 - Stimulated Raman scattering: old physics, new applications. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2009/10/15/ VL - 56 IS - 18/19 M3 - Article SP - 1970 EP - 1973 SN - 09500340 AB - Stimulated Raman scattering is a promising way of expanding the tunability of ultrafast lasers and is an exciting new biomedical imaging modality capable of selective excitation and chemically-specific diagnostics of molecular species. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN effect KW - LASERS KW - SCATTERING (Physics) KW - NONLINEAR optics KW - LIGHT -- Scattering KW - biomedical imaging KW - Raman KW - stimulated Raman KW - ultrashort laser pulses N1 - Accession Number: 49234322; Yakovlev, Vladislav V. 1; Email Address: yakovlev@uwm.edu Petrov, Georgi I. 1 Zhang, Hao F. 2 Noojin, Gary D. 3 Denton, Michael L. 3 Thomas, Robert J. 4 Scully, Marlan O. 5,6; Affiliation: 1: Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA. 2: Department of Electrical Engineering, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA. 3: Life Sciences Research and Applications Department, San Antonio, TX 78228, USA. 4: US Air Force Research Laboratory, Brooks City-Base, TX 78235, USA. 5: Department of Physics, Texas A&M University, College Station, TX 77840, USA. 6: Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA.; Source Info: Oct2009, Vol. 56 Issue 18/19, p1970; Subject Term: RAMAN effect; Subject Term: LASERS; Subject Term: SCATTERING (Physics); Subject Term: NONLINEAR optics; Subject Term: LIGHT -- Scattering; Author-Supplied Keyword: biomedical imaging; Author-Supplied Keyword: Raman; Author-Supplied Keyword: stimulated Raman; Author-Supplied Keyword: ultrashort laser pulses; Number of Pages: 4p; Illustrations: 3 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1080/09500340903082671 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=49234322&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shore, Robert A. AU - Yaghjian, Arthur D. T1 - Traveling Waves on Three-Dimensional Periodic Arrays of Two Different Alternating Magnetodielectric Spheres. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2009/10/02/Oct2009 Part 2 of 2 VL - 57 IS - 10 M3 - Article SP - 3077 EP - 3091 SN - 0018926X AB - An exact k — β (dispersion) equation to within the dipole scattering approximation has been obtained for a 3D array of two different alternating magnetodielectric spheres. The dispersion equation has the form of equating to zero the determinant of a system of four homogeneous equations in the normalized scattered field coefficients. Computationally efficient expressions are obtained for the coefficients of the homogeneous equation system as functions of the sphere radii, permittivities, and permeabilities, the free-space electrical separation distance of the array elements (kd), and the electrical separation distance (βd) for the traveling wave supported by the array. For a given value of kd and an array of lossless scatterers the determinant equation can be solved for real βd by a simple search procedure. For an array of lossy scatterers βd is complex and a more difficult minimization in the complex plane is required to solve the determinant equation. The solution to the dispersion equation also yields values for the effective permittivity and permeability of the array regarded as a continuous medium. Computations were performed to investigate the performance of two-sphere arrays of lossless dielectric spheres, with the permittivities and radii of the two different dielectric spheres composing the array chosen so that the first magnetic dipole resonant frequency of one set of spheres equals the first electric dipole resonant frequency of the second set of spheres. Although it is shown that arrays composed of two different alternating purely dielectric spheres can behave as isotropic DNG media unlike arrays of identical, dielectric spheres, the bandwidths are considerably narrower than those achievable with arrays of identical magnetodielectric spheres with appreciable permittivity and permeability close to each other. The practicality of using arrays of alternating two different purely dielectric spheres to fabricate DNG media depends on whether the narrow bandwidths are acceptable for the desired applications. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNA arrays KW - TRAVELING wave antennas KW - DIPOLE antennas KW - ELECTRIC circuits -- Alternating current KW - DIELECTRICS KW - MAGNETIC dipoles KW - METAMATERIALS KW - DISPERSION KW - Alternating magnetodielectric spheres KW - dispersion equation KW - metamaterials KW - periodic arrays N1 - Accession Number: 44812661; Shore, Robert A. 1; Email Address: robert.shore@hanscom.af.mil Yaghjian, Arthur D. 1; Affiliation: 1: Air Force Research Laboratory, Hanscom AFB, MA 01731 USA; Source Info: Oct2009 Part 2 of 2, Vol. 57 Issue 10, p3077; Subject Term: ANTENNA arrays; Subject Term: TRAVELING wave antennas; Subject Term: DIPOLE antennas; Subject Term: ELECTRIC circuits -- Alternating current; Subject Term: DIELECTRICS; Subject Term: MAGNETIC dipoles; Subject Term: METAMATERIALS; Subject Term: DISPERSION; Author-Supplied Keyword: Alternating magnetodielectric spheres; Author-Supplied Keyword: dispersion equation; Author-Supplied Keyword: metamaterials; Author-Supplied Keyword: periodic arrays; Number of Pages: 15p; Document Type: Article L3 - 10.1109/TAP.2009.2024495 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44812661&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zor, R. AU - Keren, H. AU - Hermesh, H. AU - Szechtman, H. AU - Mort, J. AU - Eilam, D. T1 - Obsessive–compulsive disorder: a disorder of pessimal (non-functional) motor behavior. JO - Acta Psychiatrica Scandinavica JF - Acta Psychiatrica Scandinavica Y1 - 2009/10// VL - 120 IS - 4 M3 - Article SP - 288 EP - 298 PB - Wiley-Blackwell SN - 0001690X AB - Objective: To determine whether in addition to repetitiveness, the motor rituals of patients with obsessive–compulsive disorder (OCD) involve reduced functionality due to numerous and measurable acts that are irrelevant and unnecessary for task completion. Method: Comparing motor rituals of OCD patients with behavior of non-patient control individuals who were instructed to perform the same motor task. Results: Obsessive–compulsive disorder behavior comprises abundant acts that were not performed by the controls. These acts seem unnecessary or even irrelevant for the task that the patients were performing, and therefore are termed ‘non-functional’. Non-functional acts comprise some 60% of OCD motor behavior. Moreover, OCD behavior consists of short chains of functional acts bounded by long chains of non-functional acts. Conclusion: The abundance of irrelevant or unnecessary acts in OCD motor rituals represents reduced functionality in terms of task completion, typifying OCD rituals as pessimal behavior (antonym of optimal behavior). [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Psychiatrica Scandinavica is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OBSESSIVE-compulsive disorder KW - NEUROSES KW - MOTOR ability KW - BEHAVIOR KW - PATIENTS KW - compulsive content KW - compulsive ritual KW - functional impairment KW - ritualization KW - sequential order KW - temporal order N1 - Accession Number: 44132956; Zor, R. 1 Keren, H. 1 Hermesh, H. 2 Szechtman, H. 3 Mort, J. 4 Eilam, D. 1; Email Address: eilam@post.tau.ac.il; Affiliation: 1: Department of Zoology, Tel-Aviv University, Ramat-Aviv, Israel. 2: Adult Outpatient Department and Anxiety Disorders and Behaviour Therapy Unit, Geha Mental Health Center, Rabin Medical Center, Petach-Tiquva and Sackler Faculty of Medicine, Tel Aviv University, Ramat-Aviv, Israel. 3: Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada. 4: Behavioral modeling branch, US Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA.; Source Info: Oct2009, Vol. 120 Issue 4, p288; Subject Term: OBSESSIVE-compulsive disorder; Subject Term: NEUROSES; Subject Term: MOTOR ability; Subject Term: BEHAVIOR; Subject Term: PATIENTS; Author-Supplied Keyword: compulsive content; Author-Supplied Keyword: compulsive ritual; Author-Supplied Keyword: functional impairment; Author-Supplied Keyword: ritualization; Author-Supplied Keyword: sequential order; Author-Supplied Keyword: temporal order; Number of Pages: 11p; Illustrations: 1 Diagram, 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1111/j.1600-0447.2009.01370.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44132956&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Flood, Ian AU - Bewick, Bryan T AU - Dinan, Robert J AU - Salim, Hani A T1 - Modeling blast wave propagation using artificial neural network methods JO - Advanced Engineering Informatics JF - Advanced Engineering Informatics Y1 - 2009/10// VL - 23 IS - 4 M3 - Article SP - 418 EP - 423 SN - 14740346 AB - Abstract: The paper reports on work concerned with the development of artificial neural network approaches to modeling the propagation of bomb blast waves in a built-up environment. A review of current methods of modeling blast wave propagation identifies a need for a modeling system that is both fast and versatile in its scope of application. This is followed by a description of a preliminary study that used artificial neural networks to estimate peak pressures on buildings protected by simple blast barriers, using data generated from, first, an existing empirical model and, second, miniature bomb-barrier-building experiments. The first of these studies demonstrates the viability of the approach in terms of producing accurate results very rapidly. However, the study using data from live miniature bomb-barrier-building experiments was inconclusive due to a poor distribution of the sample data. The paper then describes on-going research refining this artificial neural network approach to allow the modeling of the time-wise progress of the blast wave over the surfaces of critical structures, facilitating a three-dimensional visualization of the problem. Finally, the paper outlines a proposed novel method of modeling blast wave propagation that uses a coarse-grain simulation approach combined with artificial neural networks, which has the goal of extending modeling to complicated geometries while maintaining rapid processing. [Copyright &y& Elsevier] AB - Copyright of Advanced Engineering Informatics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEURAL networks (Computer science) KW - MATHEMATICAL models KW - ARTIFICIAL intelligence KW - THREE-dimensional imaging KW - SYSTEM analysis N1 - Accession Number: 44261441; Flood, Ian 1; Email Address: flood@ufl.edu Bewick, Bryan T 2 Dinan, Robert J 2 Salim, Hani A 3; Affiliation: 1: University of Florida, Gainesville, FL 32611, USA 2: Air Force Research Laboratory, Tyndall AFB, FL 32403, USA 3: University of Missouri-Columbia, Columbia, MO 65211, USA; Source Info: Oct2009, Vol. 23 Issue 4, p418; Subject Term: NEURAL networks (Computer science); Subject Term: MATHEMATICAL models; Subject Term: ARTIFICIAL intelligence; Subject Term: THREE-dimensional imaging; Subject Term: SYSTEM analysis; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.aei.2009.06.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44261441&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lindstrom, Chadwick D. AU - Jackson, Kevin R. AU - Williams, Skip AU - Givens, Ryan AU - Bailey, William E AU - Chung-Jen Tam AU - Terry, William F. T1 - Shock-Train Structure Resolved with Absorption Spectroscopy Part 1: System Design and Validation. JO - AIAA Journal JF - AIAA Journal Y1 - 2009/10// VL - 47 IS - 10 M3 - Article SP - 2368 EP - 2378 SN - 00011452 AB - A multiple-line-of-sight tunable diode laser absorption system for measuring shock-train structure inside a model scramjet isolator at the Wright-Patterson Air Force Base Propulsion Directorate's research cell 18 supersonic combustion facility is described. Multiple rovibrational lines of water are probed using time-multiplexing of multiple diode lasers projected across a rectangular isolator duct along 16 lines of sight. Static temperatures and water concentration (path-averaged) are computed from a Boltzmann plot for the multiple lines that are measured, and static pressures are determined from the absorption line width. The experimental setup and measurement technique are presented here along with the Mach 2 flow (no shock train) results. The absorption measurements agree to within 2 % of sidewall pressure transducer measurements and calculated (path-averaged) static temperatures at 5 Hz. The motivation for the development of this sensor was to demonstrate that it is possible to obtain accurate tunable diode laser absorption spectroscopy measurements over multiple lines of sight in a supersonic flow in real-time, allowing useful data about the spatial and temporal changes of the static pressure and temperature within a supersonic shock train. The present measurements demonstrate that multiple-line-of-sight measurements can obtain temperature, pressure, and water density information with an overall accuracy better than 5% at 1000 Hz and show that sensing based on real-time tunable diode laser absorption spectroscopy of supersonic flows is possible. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSORPTION spectra KW - SYSTEMS design KW - DIODES KW - SCRAMJET engines KW - SUPERSONIC planes KW - STATIC pressure probes N1 - Accession Number: 44873214; Lindstrom, Chadwick D. 1 Jackson, Kevin R. 1 Williams, Skip 1 Givens, Ryan 2 Bailey, William E 2 Chung-Jen Tam 3 Terry, William F. 4; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433 3: Taitech, Inc., Beavercreek, Ohio 45430 4: Innovative Scientific Solutions, Inc., Beavercreek, Ohio 45430; Source Info: Oct2009, Vol. 47 Issue 10, p2368; Subject Term: ABSORPTION spectra; Subject Term: SYSTEMS design; Subject Term: DIODES; Subject Term: SCRAMJET engines; Subject Term: SUPERSONIC planes; Subject Term: STATIC pressure probes; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 11p; Illustrations: 3 Diagrams, 5 Charts, 7 Graphs; Document Type: Article L3 - 10.2514/1.41074 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44873214&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lindstrom, Chadwick D. AU - Davis, Doug AU - Williams, Skip AU - Chung-Jen Tam T1 - Shock-Train Structure Resolved with Absorption Spectroscopy Part 2: Analysis and CFD Comparison. JO - AIAA Journal JF - AIAA Journal Y1 - 2009/10// VL - 47 IS - 10 M3 - Article SP - 2379 EP - 2390 SN - 00011452 AB - Multiple-line-of-sight tunable diode laser absorption measurements of the shock-train structure inside a model scramjet isolator are described. Understanding the shock train is important when considering the design of isolators to prevent unstart as well as dealing with heat transfer. Results from experimental studies such as this one can be used to help refine and validate the computational fluid dynamics models that are used in isolator design. Interpretation of the data collected is complicated because of the unsteady nature of the shock train. First, the gigabytes of acquired data are integrated on a scan-by-scan basis to form absorption-versus-time plots that can be used to determine the shock oscillation power spectrum and amplitude. The shock train is found to oscillate about its mean position with a peak-to-peak amplitude nearly equal to the equivalent duct diameter of 5.75 cm and with a power spectrum largely confined below 100 Hz. Next, developing an understanding of fundamental features of the flow requires that some form of intelligent feature extraction is used. This is difficult because the flow features are not simply periodic but involve a multitude of frequencies. Here, k-means data clustering is used to reduce the information to shock structures corresponding to various shock-front locations in the scramjet isolator as a function of backpressure. These clustered data sets are then used to extract path-averaged (transverse direction) static temperatures, static pressures, and water concentrations as a function of streamwise position that can be compared with path-averaged computational fluid dynamics computations. The results indicate that the computational fluid dynamics overestimates the shock spacing by 45% and that the path-averaged temperatures and pressures show a factor-of-2 variation more than indicated by the computational fluid dynamics simulations. These results can be used to help improve the computational fluid dynamics computations of the shock-train structure. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHOCK (Mechanics) KW - ABSORPTION spectra KW - SCRAMJET engines KW - HEAT transfer KW - FLUID dynamics N1 - Accession Number: 44873215; Lindstrom, Chadwick D. 1 Davis, Doug 1 Williams, Skip 1 Chung-Jen Tam 2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Taitech, Inc., Beavercreek, Ohio 45430; Source Info: Oct2009, Vol. 47 Issue 10, p2379; Subject Term: SHOCK (Mechanics); Subject Term: ABSORPTION spectra; Subject Term: SCRAMJET engines; Subject Term: HEAT transfer; Subject Term: FLUID dynamics; Number of Pages: 12p; Illustrations: 1 Chart, 15 Graphs; Document Type: Article L3 - 0.2514/1.41077 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44873215&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ramanathan, Madhumati AU - Luckarift, Heather R. AU - Sarsenova, Ainur AU - Wild, James R. AU - Ramanculov, Erlan K. AU - Olsen, Eric V. AU - Simonian, Aleksandr L. T1 - Lysozyme-mediated formation of protein–silica nano-composites for biosensing applications JO - Colloids & Surfaces B: Biointerfaces JF - Colloids & Surfaces B: Biointerfaces Y1 - 2009/10// VL - 73 IS - 1 M3 - Article SP - 58 EP - 64 SN - 09277765 AB - Abstract: We demonstrate a rapid method for enzyme immobilization directly on a waveguide surface by encapsulation in a silica matrix. Organophosphate hydrolase (OPH), an enzyme that catalytically hydrolyzes organophosphates, was used as a model enzyme to demonstrate the utility of lysozyme-mediated silica formation for enzyme stabilization. Silica morphology and the efficiency of OPH encapsulation were directly influenced by the precursor choice used in silica formation. Covalent attachment of the lysozyme template directly to the waveguide surface provided a stable basis for silica formation and significantly increased the surface area for OPH encapsulation. OPH conjugated to a pH-responsive fluorophore was encapsulated in silica and patterned to a waveguide surface to demonstrate the immobilization strategy for the development of an organophosphate array biodetector. Silica-encapsulated OPH retained its catalytic activity for nearly 60 days with a detection limit of paraoxon of ∼35μM. The encapsulation technique provides a potentially versatile tool with specific application to biosensor development. [Copyright &y& Elsevier] AB - Copyright of Colloids & Surfaces B: Biointerfaces is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMMOBILIZED enzymes KW - LYSOZYMES KW - BIOSENSORS KW - MICROENCAPSULATION KW - NANOSTRUCTURES KW - SILICA KW - PROTEINS KW - HYDROLYSIS KW - Array biosensor KW - Lysozyme KW - OPH KW - Paraoxon KW - Silica KW - Silicification N1 - Accession Number: 43306187; Ramanathan, Madhumati 1 Luckarift, Heather R. 2,3 Sarsenova, Ainur 4 Wild, James R. 5 Ramanculov, Erlan K. 4 Olsen, Eric V. 6 Simonian, Aleksandr L. 1; Email Address: simonal@auburn.edu; Affiliation: 1: Materials Research and Education Center, Samuel Ginn College of Engineering, Auburn University, Auburn, AL 36849, USA 2: Air Force Research Laboratory, 139 Barnes Drive, Suite # 2, Tyndall AFB, FL 32403, USA 3: Universal Technology Corporation, 1270 N. Fairfield Road, Dayton, OH 45432, USA 4: National Center of Biotechnology of the Republic of Kazakhstan, Valikhanov Street 43, Astana 010000, Kazakhstan 5: Biochemistry and Biophysics Department, Texas A&M University, College Station, TX 77843, USA 6: Clinical Research Facility, 81st Medical Group, Keesler AFB, MS 39534, USA; Source Info: Oct2009, Vol. 73 Issue 1, p58; Subject Term: IMMOBILIZED enzymes; Subject Term: LYSOZYMES; Subject Term: BIOSENSORS; Subject Term: MICROENCAPSULATION; Subject Term: NANOSTRUCTURES; Subject Term: SILICA; Subject Term: PROTEINS; Subject Term: HYDROLYSIS; Author-Supplied Keyword: Array biosensor; Author-Supplied Keyword: Lysozyme; Author-Supplied Keyword: OPH; Author-Supplied Keyword: Paraoxon; Author-Supplied Keyword: Silica; Author-Supplied Keyword: Silicification; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.colsurfb.2009.04.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43306187&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carroll, J. AU - Efstathiou, C. AU - Lambros, J. AU - Sehitoglu, H. AU - Hauber, B. AU - Spottswood, S. AU - Chona, R. T1 - Investigation of fatigue crack closure using multiscale image correlation experiments JO - Engineering Fracture Mechanics JF - Engineering Fracture Mechanics Y1 - 2009/10// VL - 76 IS - 15 M3 - Article SP - 2384 EP - 2398 SN - 00137944 AB - Abstract: Two full-field macroscale methods are introduced for estimating fatigue crack opening levels based on digital image correlation (DIC) displacement measurements near the crack tip. Crack opening levels from these two full-field methods are compared to results from a third (microscale) method that directly measures opening of the crack flanks immediately behind the crack tip using two-point DIC displacement gages. Of the two full-field methods, the first one measures effective stress intensity factors through the displacement field (over a wide region behind and ahead of the crack tip). This method reveals crack opening levels comparable to the limiting values (crack opening levels far from the crack tip) from the third method (microscale). The second full-field method involves a compliance offset measurement based on displacements obtained near the crack tip. This method delivers results comparable to crack tip opening levels from the microscale two-point method. The results of these experiments point to a normalized crack tip opening level of 0.35 for R ∼0 loading in grade 2 titanium. This opening level was found at low and intermediate ΔK levels. It is shown that the second full-field macroscale method indicates crack opening levels comparable to surface crack tip opening levels (corresponding to unzipping of the entire crack). This indicates that effective stress intensity factors determined from full-field displacements could be used to predict crack opening levels. [Copyright &y& Elsevier] AB - Copyright of Engineering Fracture Mechanics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Fatigue KW - FRACTURE mechanics KW - CORRELATION (Statistics) KW - ESTIMATION theory KW - DIGITAL image processing KW - STRAINS & stresses (Mechanics) KW - SURFACES (Technology) KW - Crack growth KW - Digital image correlation KW - Fatigue KW - Fatigue crack closure KW - Titanium N1 - Accession Number: 44262185; Carroll, J. 1 Efstathiou, C. 1 Lambros, J. 2; Email Address: lambros@uiuc.edu Sehitoglu, H. 1 Hauber, B. 3 Spottswood, S. 3 Chona, R. 3; Affiliation: 1: Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, 1206 W. Green Street, Urbana, IL 61801, USA 2: Department of Aerospace Engineering, University of Illinois at Urbana-Champaign, 104 S. Wright Street, Urbana, IL 61801, USA 3: Air Force Research Laboratory, AFRL/VASM, 2790 D. Street, Wright-Patterson AFB, OH 45433-7402, USA; Source Info: Oct2009, Vol. 76 Issue 15, p2384; Subject Term: MATERIALS -- Fatigue; Subject Term: FRACTURE mechanics; Subject Term: CORRELATION (Statistics); Subject Term: ESTIMATION theory; Subject Term: DIGITAL image processing; Subject Term: STRAINS & stresses (Mechanics); Subject Term: SURFACES (Technology); Author-Supplied Keyword: Crack growth; Author-Supplied Keyword: Digital image correlation; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Fatigue crack closure; Author-Supplied Keyword: Titanium; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.engfracmech.2009.08.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44262185&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kosai, Hiroyuki AU - McNeal, Seana AU - Jordan, Brett AU - Scofield, James AU - Ray, Biswajit AU - Turgut, Zafer T1 - Coupled Inductor Characterization for a High Performance Interleaved Boost Converter. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2009/10// VL - 45 IS - 10 M3 - Article SP - 4812 EP - 4815 SN - 00189464 AB - Interleaved power converter topologies have received increasing attention in recent years for high power and high performance applications. The advantages of interleaved boost converters include increased efficiency, reduced size, reduced electromagnetic emission, faster transient response, and improved reliability. The front end inductors in an interleaved boost converter are magnetically coupled to improve electrical performance and reduce size and weight. Compared to a direct coupled configuration, inverse coupling provides the advantages of lower inductor ripple current and negligible dc flux levels in the core. In this paper, we explore the possible advantages of core geometry on core losses and converter efficiency. Analysis of FEA simulation and empirical characterization data indicates a potential superiority of a square core, with symmetric 45° energy storage corner gaps, for providing both ac flux balance and maximum dc flux cancellation when wound in an inverse coupled configuration. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CASCADE converters KW - ELECTRIC inductors KW - MAGNETIC flux KW - MAGNETIC cores KW - GEOMETRY KW - TOPOLOGY KW - ENERGY storage KW - Interleaved boost converter KW - magnetic core KW - magnetic flux N1 - Accession Number: 44704197; Kosai, Hiroyuki 1; Email Address: hiroyuki.kosai@wpafb.af.mil McNeal, Seana 2 Jordan, Brett 2 Scofield, James 2 Ray, Biswajit 3 Turgut, Zafer 1; Affiliation: 1: UES, Inc., Dayton, OH 45432 USA 2: Air Force Research Laboratory, Wright Patterson Air Force Base, WPAFB, OH 45433 USA 3: Bloomsburg University of Pennsylvania, Bloomsburg, PA 17815 USA; Source Info: Oct2009, Vol. 45 Issue 10, p4812; Subject Term: CASCADE converters; Subject Term: ELECTRIC inductors; Subject Term: MAGNETIC flux; Subject Term: MAGNETIC cores; Subject Term: GEOMETRY; Subject Term: TOPOLOGY; Subject Term: ENERGY storage; Author-Supplied Keyword: Interleaved boost converter; Author-Supplied Keyword: magnetic core; Author-Supplied Keyword: magnetic flux; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; Number of Pages: 4p; Illustrations: 3 Charts, 4 Graphs; Document Type: Article L3 - 10.1109/TMAG.2009.2024639 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44704197&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ferrara, Matthew AU - Arnold, Gregory AU - Stuff, Mark T1 - Shape and Motion Reconstruction from 3D-to-1D Orthographically Projected Data via Object-Image Relations. JO - IEEE Transactions on Pattern Analysis & Machine Intelligence JF - IEEE Transactions on Pattern Analysis & Machine Intelligence Y1 - 2009/10// VL - 31 IS - 10 M3 - Article SP - 1906 EP - 1912 SN - 01628828 AB - This paper describes an invariant-based shape- and motion reconstruction algorithm for 3D-to-1D orthographically projected range data taken from unknown viewpoints. The algorithm exploits the object-image relation that arises in echo-based range data and represents a simplification and unification of previous work in the literature. Unlike one proposed approach, this method does not require uniqueness constraints, which makes its algorithmic form independent of the translation removal process (centroid removal, range alignment, etc.). The new algorithm, which simultaneously incorporates every projection and does not use an initialization in the optimization process, requires fewer calculations and is more straightforward than the previous approach. Additionally, the new algorithm is shown to be the natural extension of the approach developed by Tomasi and Kanade for 3D-to-2D orthographically projected data and is applied to a realistic inverse synthetic aperture radar imaging scenario, as welt as experiments with varying amounts of aperture diversity and noise. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Pattern Analysis & Machine Intelligence is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMAGE reconstruction KW - ALGORITHMS KW - ORTHOGRAPHIC projection KW - SYNTHETIC aperture radar KW - MATHEMATICAL optimization KW - IMAGING systems KW - factorization method KW - Geometric invariants KW - moving-target imaging KW - object-image relation KW - orthographic projection KW - shape from motion N1 - Accession Number: 44679602; Ferrara, Matthew 1; Email Address: matthew.ferrara@afrl.af.mil Arnold, Gregory 1; Email Address: gregory.arnold@afrl.af.mil Stuff, Mark 2; Email Address: mastuff@mtu.edu; Affiliation: 1: Air Force Research Laboratory, 2241 Avionics Circle, Dayton, OH 45433 2: Michigan Tech Research Institute, 3600 Green Court, Suite 100, Ann Arbor, MI 48105-1570; Source Info: Oct2009, Vol. 31 Issue 10, p1906; Subject Term: IMAGE reconstruction; Subject Term: ALGORITHMS; Subject Term: ORTHOGRAPHIC projection; Subject Term: SYNTHETIC aperture radar; Subject Term: MATHEMATICAL optimization; Subject Term: IMAGING systems; Author-Supplied Keyword: factorization method; Author-Supplied Keyword: Geometric invariants; Author-Supplied Keyword: moving-target imaging; Author-Supplied Keyword: object-image relation; Author-Supplied Keyword: orthographic projection; Author-Supplied Keyword: shape from motion; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; Number of Pages: 7p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1109/TPAMI.2008.294 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44679602&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pan, Ernie AU - Zou, Yu AU - Chung, Peter W. AU - Albrecht, John D. T1 - Strain-induced variations of electronic energy band edges of embedded semiconductor quantum dots in half-space substrates. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2009/10// VL - 106 IS - 7 M3 - Article SP - 073504-1 EP - 073504-12 PB - American Institute of Physics SN - 00218979 AB - The strain-induced local electronic band edge states in semiconductor quantum dots (QDs) are studied using a k·p description of the electronic eigenstates coupled with the induced lattice strain as calculated using the continuum mechanics (CM) description. In the CM method, the misfit-lattice induced strain can be reduced to an analytical expression that is straightforward to evaluate numerically. Different from most previous analyses for QDs in infinite spaces, we address cubic and pyramidal QDs located in half-space substrates with different lattice orientations, which more realistically describe experimental situations in most instances. The band edges within the cubic and pyramidal InAs QDs embedded in GaAs substrates are predicted within the six-band k·p basis via both a published approximation and the presented exact approach. Comparison of the strain-induced local band edge shows that the approximate method adopted previously in literature could result in a substantial error near the interface region of the QD. The strain-induced band edges along the bottom center line of the QD can differ by a factor of 2 between the two approaches. Furthermore, the effect of the free surface on the strain-induced band edges is studied by varying the depth of the buried QD. When the QD is moved away from the surface, the band edges converge in a consistent way to the infinite-space solution. Comparison with available experimental results validates our exact model within the half-space substrate and shows the importance of treating the surface in a theoretically rigorous way. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENERGY bands KW - QUANTUM dots KW - CONTINUUM mechanics KW - INTERFACES (Physical sciences) -- Mathematics KW - LATTICE field theory KW - GREEN'S functions N1 - Accession Number: 44642452; Pan, Ernie 1 Zou, Yu 1 Chung, Peter W. 2 Albrecht, John D. 3; Affiliation: 1: Computer Modeling and Simulation Group, College of Engineering, University of Akron, Akron, Ohio 44325, 2: U.S. Army Research Laboratory, Aberdeen Proving Ground, Maryland 21005, 3: Air Force Research Laboratory, WPAFB, Ohio 45433,; Source Info: Oct2009, Vol. 106 Issue 7, p073504-1; Subject Term: ENERGY bands; Subject Term: QUANTUM dots; Subject Term: CONTINUUM mechanics; Subject Term: INTERFACES (Physical sciences) -- Mathematics; Subject Term: LATTICE field theory; Subject Term: GREEN'S functions; Number of Pages: 12p; Illustrations: 1 Diagram, 10 Graphs; Document Type: Article L3 - 10.1063/1.3234383 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44642452&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dover, Robert AU - Roy, Nabarun AU - George, Roger Zane AU - Renshon, Jonathan AU - Coletta, Damon T1 - Book Reviews. JO - Journal of Strategic Studies JF - Journal of Strategic Studies Y1 - 2009/10// VL - 32 IS - 5 M3 - Book Review SP - 799 EP - 810 SN - 01402390 AB - The article reviews the books "Spying on the Nuclear Bear: Anglo-American Intelligence and the Soviet Bomb," by Michael S. Goodman, "India: From Regional to World Power," by Ashok Kapur, and "Power Shifts, Strategy, and War: Declining States and International Conflict," by Dong Sun Lee. KW - NONFICTION KW - GOODMAN, Michael S. KW - KAPUR, Ashok KW - DONG Sun Lee KW - SPYING on the Nuclear Bear: Anglo-American Intelligence & the Soviet Bomb (Book) KW - INDIA: From Regional to World Power (Book) KW - POWER Shifts, Strategy & War: Declining States & International Conflict (Book) N1 - Accession Number: 44746370; Dover, Robert 1 Roy, Nabarun 2 George, Roger Zane 3 Renshon, Jonathan 4 Coletta, Damon 5; Affiliation: 1: Loughborough University, Leics, UK 2: Carleton University Ottawa, Canada 3: Georgetown University, Washington, DC 4: Harvard University, Cambridge, MA 5: United States Air Force Academy,; Source Info: Oct2009, Vol. 32 Issue 5, p799; Subject Term: NONFICTION; Reviews & Products: SPYING on the Nuclear Bear: Anglo-American Intelligence & the Soviet Bomb (Book); Reviews & Products: INDIA: From Regional to World Power (Book); Reviews & Products: POWER Shifts, Strategy & War: Declining States & International Conflict (Book); People: GOODMAN, Michael S.; People: KAPUR, Ashok; People: DONG Sun Lee; Number of Pages: 12p; Document Type: Book Review L3 - 10.1080/01402390903189444 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44746370&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davidson, Sean A. AU - Gilkey, Robert H. AU - Colburn, H. Steven AU - Carney, Laurel H. T1 - Diotic and dichotic detection with reproducible chimeric stimuli. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2009/10// VL - 126 IS - 4 M3 - Article SP - 1889 EP - 1905 SN - 00014966 AB - Subject responses were measured for individual narrow-band reproducible stimuli in a low-frequency tone-in-noise detection task. Both N0S0 and N0Sπ conditions were examined. The goal of the experiment was to determine the relative importance of envelope and fine-structure cues. Therefore, chimeric stimuli were generated by recombining envelopes and fine structures from different reproducible stimuli. Detection judgments for noise-alone or tone-plus-noise stimuli that had common envelopes but different fine structures or common fine structures but different envelopes were compared. The results showed similar patterns of responses to stimuli that shared envelopes, indicating the importance of envelope cues; however, fine-structure cues were also shown to be important. The relative weight assigned to envelope and fine-structure cues varied across subjects and across interaural conditions. The results also indicated that envelope and fine-structure information are not processed independently. Implications for monaural and binaural models of masking are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DICHOTIC listening tests KW - AUDIOMETRY KW - NOISE KW - TONE (Phonetics) KW - BINAURAL hearing aids N1 - Accession Number: 44483683; Davidson, Sean A. 1 Gilkey, Robert H. 2 Colburn, H. Steven 3 Carney, Laurel H. 4; Email Address: laurel.carney@rochester.edu; Affiliation: 1: Department of Biomedical and Chemical Engineering, Institute for Sensory Research, Syracuse University, 621 Skytop Road, Syracuse, New York 13244 2: Department of Psychology, Wright State University, Dayton, Ohio 45435 and Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 3: Boston University Hearing Research Center, Department of Biomedical Engineering, Boston University, 44 Cummington Street, Boston, Massachusetts 02215 4: Department of Biomedical and Chemical Engineering, Department of Electrical Engineering and Computer Science, and The Institute for Sensory Research, Syracuse University, 621 Skytop Road, Syracuse, New York 13244; Source Info: Oct2009, Vol. 126 Issue 4, p1889; Subject Term: DICHOTIC listening tests; Subject Term: AUDIOMETRY; Subject Term: NOISE; Subject Term: TONE (Phonetics); Subject Term: BINAURAL hearing aids; Number of Pages: 17p; Illustrations: 2 Diagrams, 8 Charts, 2 Graphs; Document Type: Article L3 - 10.1121/1.3203996 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44483683&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davidson, Sean A. AU - Gilkey, Robert H. AU - Colburn, H. Steven AU - Carney, Laurel H. T1 - An evaluation of models for diotic and dichotic detection in reproducible noises. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2009/10// VL - 126 IS - 4 M3 - Article SP - 1906 EP - 1925 SN - 00014966 AB - Several psychophysical models for masked detection were evaluated using reproducible noises. The data were hit and false-alarm rates from three psychophysical studies of detection of 500-Hz tones in reproducible noise under diotic (N0S0) and dichotic (N0Sπ) conditions with four stimulus bandwidths (50, 100, 115, and 2900 Hz). Diotic data were best predicted by an energy-based multiple-detector model that linearly combined stimulus energies at the outputs of several critical-band filters. The tone-plus-noise trials in the dichotic data were best predicted by models that linearly combined either the average values or the standard deviations of interaural time and level differences; however, these models offered no predictions for noise-alone responses. The decision variables of more complicated temporal models, including the models of Dau et al. [(1996a). J. Acoust. Soc. Am. 99, 3615–3622] and Breebaart et al. [(2001a). J. Acoust. Soc. Am. 110, 1074–1088], were weakly correlated with subjects’ responses. Comparisons of the dependencies of each model on envelope and fine-structure cues to those in the data suggested that dependence upon both envelope and fine structure, as well as an interaction between them, is required to predict the detection results. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC systems KW - ELECTRONIC circuit design KW - DIGITAL communications KW - ENGINEERING instruments KW - ARCHITECTURAL acoustics KW - PHYSICAL measurements KW - SOUND measurement N1 - Accession Number: 44483658; Davidson, Sean A. 1 Gilkey, Robert H. 2 Colburn, H. Steven 3 Carney, Laurel H. 4; Email Address: laurel.carney@rochester.edu; Affiliation: 1: Department of Biomedical and Chemical Engineering, Institute for Sensory Research, Syracuse University, 621 Skytop Road, Syracuse, New York 13244 2: Department of Psychology, Wright State University, Dayton, Ohio 45435 and Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 3: Department of Biomedical Engineering, Boston University Hearing Research Center, Boston University, 44 Cummington Street, Boston, Massachusetts 02215 4: Department of Biomedical and Chemical Engineering, Department of Electrical Engineering and Computer Science, and The Institute for Sensory Research, Syracuse University, 621 Skytop Road, Syracuse, New York 13244; Source Info: Oct2009, Vol. 126 Issue 4, p1906; Subject Term: ELECTRONIC systems; Subject Term: ELECTRONIC circuit design; Subject Term: DIGITAL communications; Subject Term: ENGINEERING instruments; Subject Term: ARCHITECTURAL acoustics; Subject Term: PHYSICAL measurements; Subject Term: SOUND measurement; Number of Pages: 20p; Illustrations: 2 Diagrams, 7 Charts, 8 Graphs; Document Type: Article L3 - 10.1121/1.3206583 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44483658&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Weijing He AU - Kulkarni, Hemant AU - Castiblanco, John AU - Shimizu, Chisato AU - Aluyen, Una AU - Maldonado, Robert AU - Carrillo, Andrew AU - Griffin, Madeline AU - Lipsitt, Amanda AU - Beachy, Lisa AU - Shostakovich-Koretskaya, Ludmila AU - Mangano, Andrea AU - Sen, Luisa AU - Nibbs, Robert J. B. AU - Tiemessen, Caroline T. AU - Bolivar, Hector AU - Bamshad, Michael J. AU - Clark, Robert A. AU - Burns, Jane C. AU - Dolan, Matthew J. T1 - Reply to: “Experimental aspects of copy number variant assays at CCL3L1”. JO - Nature Medicine JF - Nature Medicine Y1 - 2009/10// VL - 15 IS - 10 M3 - Letter SP - 1117 EP - 1120 PB - Nature Publishing Group SN - 10788956 AB - A response by Weijing He and colleagues to a letter to the editor on their articles regarding the methodological concerns of C-C chemokine ligand-3-like-1 (CCL3L1) gene quantitative Polymerase Chain Reaction (qPCR) assay is presented. KW - LETTERS to the editor KW - BIOLOGICAL assay N1 - Accession Number: 44500547; Weijing He 1,2 Kulkarni, Hemant 1,2 Castiblanco, John 1,2 Shimizu, Chisato 3 Aluyen, Una 1,2 Maldonado, Robert 1,2 Carrillo, Andrew 1,2 Griffin, Madeline 1,2 Lipsitt, Amanda 1,2 Beachy, Lisa 1,2 Shostakovich-Koretskaya, Ludmila 4 Mangano, Andrea 5 Sen, Luisa 5 Nibbs, Robert J. B. 6 Tiemessen, Caroline T. 7 Bolivar, Hector 8 Bamshad, Michael J. 9 Clark, Robert A. 1,2 Burns, Jane C. 3 Dolan, Matthew J. 10,11; Affiliation: 1: Veterans Administration Research Center for AIDS and HIV-1 Infection, South Texas Veterans Health Care System, San Antonio, Texas, USA 2: Department of Medicine, University of Texas Health Science Center, San Antonio, Texas, USA 3: Department of Pediatrics, University of California-San Diego School of Medicine, La Jolla, California, USA 4: Department of General Pediatrics and Pediatric Infectious Diseases, Dnepropetrovsk State Medical Academy, Dnepropetrovsk, Ukraine 5: Laboratorio de Biología Celular y Retrovirus, Hospital de Pediatría 'J.P. Garrahan', Buenos Aires, Argentina 6: Glasgow Biomedical Research Centre, University of Glasgow, Glasgow, Scotland, UK 7: AIDS Virus Research Unit, National Institute for Communicable Diseases/National Health Laboratory Services and University of the Witwatersrand, Johannesburg, South Africa 8: AIDS Clinical Research Unit, University of Miami, Miller School of Medicine, Miami, Florida, USA 9: Departments of Pediatrics and Genome Sciences, University of Washington and Seattle Children's Hospital, Seattle, Washington, USA 10: Henry M. Jackson Foundation, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas, USA 11: Infectious Disease Service, San Antonio Military Medical Center, Brooke Army Medical Center, Fort Sam Houston, Texas, USA; Source Info: Oct2009, Vol. 15 Issue 10, p1117; Subject Term: LETTERS to the editor; Subject Term: BIOLOGICAL assay; Number of Pages: 4p; Illustrations: 1 Diagram, 1 Graph; Document Type: Letter L3 - 10.1038/nm1009-1117 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44500547&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blessington, J. AU - Adams, S. F. AU - Demidov, V. I. AU - Williamson, J. M. T1 - Effect of energetic electrons on near-wall sheath voltage in the cathode region of a cold cathode direct current discharge. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2009/10// VL - 16 IS - 10 M3 - Article SP - 104501 PB - American Institute of Physics SN - 1070664X AB - It is experimentally demonstrated that energetic electrons originating from the cathode or produced in volumetric processes in the cathode region of a cold cathode direct current discharge can create a large potential drop in the near-wall sheath. This voltage drop may be much greater than kTe/e (where k is the Boltzmann constant, Te is the electron temperature, and e is the electron charge). Due to the large near-wall sheath voltage, slow and moderately energetic electrons cannot reach the wall and move toward the anode. Application of additional potentials to the wall can change the amount of energetic electrons reaching the wall. This effect can be used for regulation of the near-cathode plasma and near-wall sheath properties and thus may be useful in technical applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - CATHODE rays KW - PARTICLES (Nuclear physics) KW - DIRECT currents KW - NUCLEAR physics N1 - Accession Number: 44910012; Blessington, J. 1 Adams, S. F. 2 Demidov, V. I. 1,3 Williamson, J. M. 4; Affiliation: 1: Department of Physics, West Virginia University, Morgantown, West Virginia 26506, USA. 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA. 3: UES, Inc., 4401 Dayton-Xenia Road, Beavercreek, Ohio 45432, USA. 4: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Ohio 45440-3638, USA.; Source Info: Oct2009, Vol. 16 Issue 10, p104501; Subject Term: ELECTRONS; Subject Term: CATHODE rays; Subject Term: PARTICLES (Nuclear physics); Subject Term: DIRECT currents; Subject Term: NUCLEAR physics; Number of Pages: 4p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.3257914 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44910012&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Porter, W.J. AU - Uchic, M.D. AU - John, R. AU - Barnas, N.B. T1 - Compression property determination of a gamma titanium aluminide alloy using micro-specimens JO - Scripta Materialia JF - Scripta Materialia Y1 - 2009/10// VL - 61 IS - 7 M3 - Article SP - 678 EP - 681 SN - 13596462 AB - Compressive room temperature yield behaviors of micro-specimens representing three lamellar orientations of a gamma titanium aluminide alloy were evaluated. The mechanical responses from specimens of each orientation and various diameters are compared to one another and to compression-loaded, conventionally sized titanium aluminide specimens. The yield stress results from the micro-specimens are shown to be relatively independent of specimen diameter and similar to those of conventionally sized compression specimens with similar microstructures. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - METALS -- Compression testing KW - METALS -- Mechanical properties KW - ALLOYS -- Testing KW - METALS -- Microstructure KW - ALUMINUM alloys KW - Compression test KW - Micro-specimen KW - Titanium aluminide KW - Yield phenomena N1 - Accession Number: 43414347; Porter, W.J. 1,2; Email Address: william.porter@wpafb.af.mil Uchic, M.D. 1 John, R. 1 Barnas, N.B. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RXLM), Wright-Patterson Air Force Base, OH 45433-7817, USA 2: University of Dayton Research Institute (UDRI), OH 45469-0020, USA; Source Info: Oct2009, Vol. 61 Issue 7, p678; Subject Term: TITANIUM alloys; Subject Term: METALS -- Compression testing; Subject Term: METALS -- Mechanical properties; Subject Term: ALLOYS -- Testing; Subject Term: METALS -- Microstructure; Subject Term: ALUMINUM alloys; Author-Supplied Keyword: Compression test; Author-Supplied Keyword: Micro-specimen; Author-Supplied Keyword: Titanium aluminide; Author-Supplied Keyword: Yield phenomena; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2009.05.038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43414347&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morrill, J. S. AU - Howard, R. A. AU - Vourlidas, A. AU - Webb, D. F. AU - Kunkel, V. T1 - The Impact of Geometry on Observations of CME Brightness and Propagation. JO - Solar Physics JF - Solar Physics Y1 - 2009/10// VL - 259 IS - 1/2 M3 - Article SP - 179 EP - 197 PB - Springer Science & Business Media B.V. SN - 00380938 AB - Coronal mass ejections (CMEs) have a significant impact on space weather and geomagnetic storms and so have been the subject of numerous studies. Most CME observations have been made while these events are near the Sun ( e.g., SOHO/LASCO). Recent data from the Coriolis/SMEI and STEREO/SECCHI-HI instruments have imaged CMEs farther into the heliosphere. Analyses of CME observations near the Sun measure the properties of these events by assuming that the emission is in the plane of the sky and hence the speed and mass are lower limits to the true values. However, this assumption cannot be used to analyze optical observations of CMEs far from the Sun, such as observations from SMEI and SECCHI-HI, since the CME source is likely to be far from the limb. In this paper we consider the geometry of observations made by LASCO, SMEI, and SECCHI. We also present results that estimate both CME speed and trajectory by fitting the CME elongations observed by these instruments. Using a constant CME speed does not generally produce profiles that fit observations at both large and small elongation, simultaneously. We include the results of a simple empirical model that alters the CME speed to an estimated value of the solar wind speed to simulate the effect of drag on the propagating CME. This change in speed improves the fit between the model and observations over a broad range of elongations. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORONAL mass ejections KW - SPACE environment KW - SOLAR activity KW - SOLAR wind KW - SUN -- Active regions KW - Coronal mass ejection KW - LASCO KW - SECCHI KW - SMEI KW - Solar corona N1 - Accession Number: 44684471; Morrill, J. S. 1; Email Address: jeff.morrill@nrl.navy.mil Howard, R. A. 1 Vourlidas, A. 1 Webb, D. F. 2,3; Email Address: david.webb@hanscom.af.mil Kunkel, V. 4; Email Address: valbona.kunkel@nrl.navy.mil; Affiliation: 1: Space Sciences Division, Naval Research Laboratory, Washington, DC, USA. 2: Institute for Scientific Research, Boston College, Chestnut Hill, MA, USA. 3: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA, USA. 4: George Mason University, Fairfax, VA, USA.; Source Info: Oct2009, Vol. 259 Issue 1/2, p179; Subject Term: CORONAL mass ejections; Subject Term: SPACE environment; Subject Term: SOLAR activity; Subject Term: SOLAR wind; Subject Term: SUN -- Active regions; Author-Supplied Keyword: Coronal mass ejection; Author-Supplied Keyword: LASCO; Author-Supplied Keyword: SECCHI; Author-Supplied Keyword: SMEI; Author-Supplied Keyword: Solar corona; Number of Pages: 19p; Illustrations: 2 Black and White Photographs, 3 Diagrams, 9 Graphs; Document Type: Article L3 - 10.1007/s11207-009-9403-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44684471&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gerken, Michael AU - Moran, Matthew D. AU - Mercier, Hélëne P. A. AU - Pointner, Bernard E. AU - Schrobilgen, Gary J. AU - Hoge, Berthold AU - Christe, Karl O. AU - Boatz, Jerry A. T1 - On the XeF+/H2O System: Synthesis and Characterization of the Xenon(II) Oxide Fluoride Cation, FXeOXeFXeF+. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2009/09/23/ VL - 131 IS - 37 M3 - Article SP - 13474 EP - 13489 SN - 00027863 AB - The reported synthesis of the H2OF+ cation as a product of the oxidative fluorination of H2O by [XeF][PnF6] (Pn = As, Sb) in HF solution has been reinvestigated. The system exhibits complex equilibria, producing two new Xe(ll) compounds, [Xe3OF3][PnF6] and [H3O][PnF6]∙2XeF2, refuting the original claim for the synthesis of the H2OF+ cation. Both compounds have been isolated and characterized by vibrational spectroscopy and single-crystal X-ray diffraction. The X-ray crystal structures of the [Xe3OF3][PnF6] salts contain the Z-shaped FXeOXeFXeF+ cation, which represents the first example of an isolated Xe(ll) oxide fluoride. The crystal structure of the [H3O][AsF6]2XeF2 adduct contains XeF2 molecules that interact with the H3O4 cations. The vibrational assignments for the Xe3OF3+ cation have been made with the aid of quantum-chemical calculations and were confirmed by 180-enrichment, and the assignments for [H3O][AsF6]∙2XeF2 were confirmed by 2D- and 18O-enrichment. Quantum-chemical calculations have also been carried out for H3O+ ∙nXeF2 (n = 1-4) and have been used to interpret the X-ray crystal structure and vibrational spectra of [H3O][AsF6]∙2XeF2. The energy-minimized geometries and vibrational frequencies for HOF and H2OF+ have been calculated, further disproving the original report of the H2OF+ cation. Both FXeOH and FXeOH2+ have also been computed and are viable intermediates in the proposed equilibria between XeF+ and H2O that lead to the Xe3OF3+ cation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOSYNTHESIS KW - XENON KW - OXIDES KW - FLUORIDES KW - CATIONS KW - SALTS KW - MOLECULAR spectroscopy KW - X-ray diffraction N1 - Accession Number: 44490776; Gerken, Michael 1,2 Moran, Matthew D. 1 Mercier, Hélëne P. A. 1 Pointner, Bernard E. 1 Schrobilgen, Gary J. 1; Email Address: schrobil@mcmaster.ca Hoge, Berthold 3,4 Christe, Karl O. 3; Email Address: kchriste@usc.edu Boatz, Jerry A. 5; Affiliation: 1: Department of Chemistry, McMaster University, Hamilton ON LSS 4M1, Canada 2: Department of Chemistry and Biochemistry, University of Lethbridge, Lethbridge AB T1K 3M4, Canada 3: Loker Hydrocarbon Research institute and Department of Chemistry, University of Southern California, Los Angeles, California 90089 4: Fakultät für Chemie, Universitat Bielefeld, Postfach 1001 31, D-33501 Bielefeld, Germany 5: Air Force Research Laboratory, Edwards Air Force Base, California 93524; Source Info: 9/23/2009, Vol. 131 Issue 37, p13474; Subject Term: BIOSYNTHESIS; Subject Term: XENON; Subject Term: OXIDES; Subject Term: FLUORIDES; Subject Term: CATIONS; Subject Term: SALTS; Subject Term: MOLECULAR spectroscopy; Subject Term: X-ray diffraction; Number of Pages: 16p; Illustrations: 7 Charts, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44490776&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chadid, M. AU - Vernin, J. AU - Jumper, J. AU - Trinquet, H. AU - Bono, G. AU - Chapellier, E. AU - Mekarnia, D. T1 - First Light Curve from Antarctica PAIX Monitoring of the Blazhko Stars. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/09/16/ VL - 1170 IS - 1 M3 - Article SP - 299 EP - 301 PB - American Institute of Physics SN - 0094243X AB - PAIX (Photometer AntarctIca eXtinction) is an extended programme monitoring the Blazhko circumpolar stars from one of the highest Antarctica plateau, Dome C (3300 m), using a multi-color photometer attached at the focus of a 40 cm Ritchey-Chretien telescope installed during the polar summer 2006. Several high quality RRLyrae light curves are obtained with a quasi-uninterrupted time coverage over several pulsation and Blazhko cycles. Here, we present the first time series photometry from Dome C obtained on S Ara and during the 2007 polar night, from June to August 2007. Our results show that S Arae is “bona fide” a Blazhko star with strong nonlinearity and triplet structure. New phenomenological descriptions of the light curve variation are reported giving new insight for future Blazhko theoretical investigations and a unique opportunity to cope with the hydrodynamical challenge in connection with the radial pulsation. We conclude that high-precision CCD photometry with exceptional time coverage can be undertaken at Dome C in order to successfully gain an understanding of the Blazhko effect. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOMETRY KW - STARS -- Observations KW - TELESCOPES KW - LIGHT curves KW - HYDRODYNAMICS KW - Antarctica: Dome C KW - Blazhko eifect KW - hydrodynamics KW - hypersonic shock waves KW - multiplet structure KW - PAIX KW - stars: individual: S Arae KW - stars: oscillations-techniques: photometric KW - Stars: variables: RR Lyrae KW - stellar dynamics N1 - Accession Number: 44292519; Chadid, M. 1 Vernin, J. 2 Jumper, J. 3 Trinquet, H. 2 Bono, G. 4 Chapellier, E. 2 Mekarnia, D. 2; Affiliation: 1: Antarctica Research station, TAAF, Antarctica 2: Observ. de la Côte d'Azur, Université Nice Sophia-Antipolis, UMR 6525, Parc Valrose, 06108 Nice, France 3: US Air Force Research Laboratory, Hanscom AFB, MA, USA 4: INAF, Rome Astronomical Observatory, Via Frascati 33, 00040 Monte Porzio Catone, Italy; Source Info: 9/16/2009, Vol. 1170 Issue 1, p299; Subject Term: PHOTOMETRY; Subject Term: STARS -- Observations; Subject Term: TELESCOPES; Subject Term: LIGHT curves; Subject Term: HYDRODYNAMICS; Author-Supplied Keyword: Antarctica: Dome C; Author-Supplied Keyword: Blazhko eifect; Author-Supplied Keyword: hydrodynamics; Author-Supplied Keyword: hypersonic shock waves; Author-Supplied Keyword: multiplet structure; Author-Supplied Keyword: PAIX; Author-Supplied Keyword: stars: individual: S Arae; Author-Supplied Keyword: stars: oscillations-techniques: photometric; Author-Supplied Keyword: Stars: variables: RR Lyrae; Author-Supplied Keyword: stellar dynamics; NAICS/Industry Codes: 453999 All other miscellaneous store retailers (except beer and wine-making supplies stores); NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; Number of Pages: 3p; Illustrations: 1 Color Photograph, 2 Graphs; Document Type: Article L3 - 10.1063/1.3246497 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44292519&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Evwaraye, A. O. AU - Smith, S. R. AU - Mitchel, W. C. AU - Farlow, G. C. T1 - Electric field enhancement of electron emission rates from Z1/2 centers in 4H-SiC. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2009/09/15/ VL - 106 IS - 6 M3 - Article SP - 063702-1 EP - 063702-6 PB - American Institute of Physics SN - 00218979 AB - Z1/2 defect centers were produced by irradiating 4H-SiC bulk samples with 1 MeV electrons at room temperature. The emission rate dependence on the electric field in the depletion region was measured using deep level transient spectroscopy and double-correlation deep level transient spectroscopy. It is found that the Z1/2 defect level shows a strong electric field dependence with activation energy decreasing from Ec-0.72 eV at zero field to Ec-0.47 eV at 6.91×105 V/cm. The phonon assisted tunneling model of Karpus and Perel [Sov. Phys. JETP 64, 1376 (1986)] completely describes the experimental data. This model describes the dependence of the emission rate on electric field F as en(F)=eno exp(F2/Fc2), where Fc is the characteristic field that depends on the phonon assisted tunneling time τ2. The values of Fc and τ2 were determined and the analysis of the data leads to the suggestion that Z1/2 may be a substitutional point defect. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC fields KW - SEMICONDUCTOR doping KW - DEEP level transient spectroscopy KW - ELECTRON emission KW - TUNNELING (Physics) KW - MATHEMATICAL physics N1 - Accession Number: 44388075; Evwaraye, A. O. 1 Smith, S. R. 2 Mitchel, W. C. 3 Farlow, G. C. 4; Affiliation: 1: Department of Physics, University of Dayton, 300 College Park, Dayton, Ohio 45469-2314, 2: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469-0178, 3: Air Force Research Laboratory, 3005P Street, Wright-Patterson Air Force Base, Ohio 45433-7707, 4: Department of Physics, Wright State University, 3640 Col. Glenn Hwy, Dayton, Ohio 45435,; Source Info: Sep2009, Vol. 106 Issue 6, p063702-1; Subject Term: ELECTRIC fields; Subject Term: SEMICONDUCTOR doping; Subject Term: DEEP level transient spectroscopy; Subject Term: ELECTRON emission; Subject Term: TUNNELING (Physics); Subject Term: MATHEMATICAL physics; Number of Pages: 6p; Illustrations: 10 Graphs; Document Type: Article L3 - 10.1063/1.3224872 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44388075&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucarelli, Andrea AU - Yang, Ran AU - Grilli, Francesco AU - Haugan, Timothy AU - Barnes, Paul AU - Lüpke, Gunter T1 - Dynamic field and current distributions in multifilamentary YBa2Cu3O7-δ thin films with magnetic coupling. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2009/09/15/ VL - 106 IS - 6 M3 - Article SP - 063904-1 EP - 063904-8 PB - American Institute of Physics SN - 00218979 AB - We report on the effects of different multifilamentary geometries on the dynamic current and field distributions in YBa2Cu3O7-δ thin films. Finite-element model simulations are presented that allow a direct comparison of the calculated magnetic flux and current profiles with experimental data obtained by time-resolved magneto-optical imaging. We find that increasing the distance between filaments reduces the magnetic coupling and decreases the ac losses. Screening and transport currents also redistribute more evenly between all filaments. The measured transport current density profiles are in good agreement with the modified critical state model. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films -- Research KW - MAGNETIC couplings KW - RESEARCH KW - MAGNETIC fields KW - YTTRIUM KW - FINITE element method KW - NUMERICAL analysis KW - MAGNETIC flux KW - MODEL validation N1 - Accession Number: 44388117; Lucarelli, Andrea 1 Yang, Ran 1 Grilli, Francesco 2 Haugan, Timothy 3 Barnes, Paul 3 Lüpke, Gunter 1; Affiliation: 1: Department of Applied Science, The College of William and Mary, Williamsburg, Virginia 23187-8795, 2: Ecole Polytechnique de Montréal, P.O. Box 6079, Station Centre-Ville, Montréal, Quebec H3C 3A7, 3: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7919,; Source Info: Sep2009, Vol. 106 Issue 6, p063904-1; Subject Term: THIN films -- Research; Subject Term: MAGNETIC couplings; Subject Term: RESEARCH; Subject Term: MAGNETIC fields; Subject Term: YTTRIUM; Subject Term: FINITE element method; Subject Term: NUMERICAL analysis; Subject Term: MAGNETIC flux; Subject Term: MODEL validation; Number of Pages: 8p; Illustrations: 3 Diagrams, 10 Graphs; Document Type: Article L3 - 10.1063/1.3212976 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44388117&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shaw, Tyler H. AU - Warm, Joel S. AU - Finomore, Victor AU - Tripp, Lloyd AU - Matthews, Gerald AU - Weiler, Ernest AU - Parasuraman, Raja T1 - Effects of sensory modality on cerebral blood flow velocity during vigilance JO - Neuroscience Letters JF - Neuroscience Letters Y1 - 2009/09/15/ VL - 461 IS - 3 M3 - Article SP - 207 EP - 211 SN - 03043940 AB - Abstract: Transcranial Doppler sonography was used to measure cerebral blood flow velocity (hemovelocity, CBFV) from the left and right middle cerebral arteries during the performance of 40-min auditory and visual vigilance tasks. Reductions in stimulus duration were the critical signals for detection in both tasks, which were equated for stimulus salience and discrimination difficulty. Signal detection responses (correct detections and false alarms) and CBFV declined significantly over time in a linear manner for both modalities. In addition, the overall level of CBFV and the temporal decline in this measure were greater in the right than the left cerebral hemisphere. The results are consistent with the view that a right hemispheric system is involved in the functional control of vigilance and that this system operates in a similar manner in the auditory and visual channels. [Copyright &y& Elsevier] AB - Copyright of Neuroscience Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CEREBRAL circulation KW - TRANSCRANIAL Doppler ultrasonography KW - CEREBRAL arteries KW - VIGILANCE (Psychology) KW - SENSORY stimulation KW - CEREBRAL hemispheres KW - Sensory modality KW - Transcranial Doppler sonography (TCD) KW - Vigilance N1 - Accession Number: 43177047; Shaw, Tyler H. 1; Email Address: tshaw4@gmu.edu Warm, Joel S. 2 Finomore, Victor 2 Tripp, Lloyd 2 Matthews, Gerald 3 Weiler, Ernest 3 Parasuraman, Raja 1; Affiliation: 1: George Mason University, Fairfax, VA, United States 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH, United States 3: University of Cincinnati, Cincinnati, OH, United States; Source Info: Sep2009, Vol. 461 Issue 3, p207; Subject Term: CEREBRAL circulation; Subject Term: TRANSCRANIAL Doppler ultrasonography; Subject Term: CEREBRAL arteries; Subject Term: VIGILANCE (Psychology); Subject Term: SENSORY stimulation; Subject Term: CEREBRAL hemispheres; Author-Supplied Keyword: Sensory modality; Author-Supplied Keyword: Transcranial Doppler sonography (TCD); Author-Supplied Keyword: Vigilance; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.neulet.2009.06.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43177047&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Walton, Matthew AU - Terry, Nathan AU - Hader, Jorg AU - Moloney, Jerome AU - Bedford, Robert T1 - Extraction of semiconductor microchip differential gain by use of optically pumped semiconductor laser. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2009/09/14/ VL - 95 IS - 11 M3 - Article SP - 111101 PB - American Institute of Physics SN - 00036951 AB - The small-signal modulation response of a vertical external cavity surface emitting laser is analyzed to determine its resonance frequency in relation to photon density, allowing nondestructive extraction of characteristic parameters of chips, such as internal loss and differential gain. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTORS KW - INTEGRATED circuits KW - LASERS KW - PHOTONS KW - RESONANCE KW - EXTRACTION (Chemistry) N1 - Accession Number: 44292327; Walton, Matthew 1; Email Address: matthew.walton@wpafb.af.mil Terry, Nathan 1 Hader, Jorg 1,2 Moloney, Jerome 1,2 Bedford, Robert 1; Affiliation: 1: Air Force Research Laboratory Sensors Directorate, Wright-Patterson AFB, Ohio 45433-7321, USA 2: Nonlinear Control Strategies, Tucson, AZ, USA; Source Info: 9/14/2009, Vol. 95 Issue 11, p111101; Subject Term: SEMICONDUCTORS; Subject Term: INTEGRATED circuits; Subject Term: LASERS; Subject Term: PHOTONS; Subject Term: RESONANCE; Subject Term: EXTRACTION (Chemistry); NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.3222899 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44292327&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Viggiano, Albert A. AU - Midey, Anthony AU - Eyet, Nicole AU - Bierbaum, Veronica M. AU - Troe, Jürgen T1 - Dissociative excitation transfer in the reaction of O2(a1Δg) with OH-(H2O)1,2 clusters. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2009/09/07/ VL - 131 IS - 9 M3 - Article SP - 094303 PB - American Institute of Physics SN - 00219606 AB - Rate constants for the dissociation of OH-(H2O) and OH-(H2O)2 by transfer of electronic energy from O2(a1Δg) were measured. Values of 1.8×10-11 and 2.2×10-11 cm3 molecule-1 s-1, respectively, at 300 K were derived and temperature dependences were obtained from 300 to 500 K for OH-(H2O) and from 300 to 400 K for OH-(H2O)2. Dissociative excitation transfer with OH-(H2O) is slightly endothermic and the reaction appears to have a positive temperature dependence, but barely outside the uncertainty range. In contrast, the reaction of OH-(H2O)2 is exothermic and appears to have a negative temperature dependence. The rate constants are analyzed in terms of unimolecular rate theory, which suggests that the dissociation is prompt and is not affected by collisions with the helium buffer gas. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL reactions KW - DISSOCIATION (Chemistry) KW - CHEMISTRY -- Study & teaching KW - TEMPERATURE KW - COLLISIONS (Physics) N1 - Accession Number: 44066618; Viggiano, Albert A. 1 Midey, Anthony 1 Eyet, Nicole 2 Bierbaum, Veronica M. 2 Troe, Jürgen 3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Rd., Hanscom Air Force Base, Massachusetts 01731-3010, 2: Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, 3: Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen,; Source Info: 9/7/2009, Vol. 131 Issue 9, p094303; Subject Term: CHEMICAL reactions; Subject Term: DISSOCIATION (Chemistry); Subject Term: CHEMISTRY -- Study & teaching; Subject Term: TEMPERATURE; Subject Term: COLLISIONS (Physics); Number of Pages: 6p; Illustrations: 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.3212839 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44066618&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shade, P.A. AU - Wheeler, R. AU - Choi, Y.S. AU - Uchic, M.D. AU - Dimiduk, D.M. AU - Fraser, H.L. T1 - A combined experimental and simulation study to examine lateral constraint effects on microcompression of single-slip oriented single crystals JO - Acta Materialia JF - Acta Materialia Y1 - 2009/09// VL - 57 IS - 15 M3 - Article SP - 4580 EP - 4587 SN - 13596454 AB - Abstract: A custom in situ scanning electron microscopy mechanical testing system has been used to study the compressive deformation behavior of single-slip oriented Rene N5 single-crystal Ni superalloy microcrystals. Two different compression platens were used to explore the effect of lateral stiffness on the resultant mechanical response, which approximated either a high-friction or effectively zero-friction case. The change in the lateral constraint of the test system had a demonstrable effect on many aspects or attributes of plastic flow: the yield stress and strain-hardening behavior, the intermittency of strain bursts, the spatial distribution of slip bands, and the development of internal crystal rotations. Finite-element modeling of the microcompression experiments using an anisotropic crystal plasticity framework provided insight regarding changes in the internal stress field and resultant activity of slip systems. The experimental findings are rationalized based on these simulation results. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALS KW - MATERIALS -- Compression testing KW - DEFORMATIONS (Mechanics) KW - STIFFNESS (Mechanics) KW - STRAINS & stresses (Mechanics) KW - SCANNING electron microscopy KW - SIMULATION methods & models KW - Compression test KW - Plastic deformation KW - Slip N1 - Accession Number: 43619857; Shade, P.A. 1,2; Email Address: shade.34@osu.edu Wheeler, R. 3 Choi, Y.S. 3 Uchic, M.D. 4 Dimiduk, D.M. 4 Fraser, H.L. 1; Affiliation: 1: Department of Materials Science and Engineering, The Ohio State University, 477 Watts Hall, 2041 College Road, Columbus, OH 43210, USA 2: Universal Technology Corporation, 1270 N Fairfield Road, Dayton, OH 45432, USA 3: UES Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, 2230 10th Street, Wright-Patterson AFB, OH 45433, USA; Source Info: Sep2009, Vol. 57 Issue 15, p4580; Subject Term: CRYSTALS; Subject Term: MATERIALS -- Compression testing; Subject Term: DEFORMATIONS (Mechanics); Subject Term: STIFFNESS (Mechanics); Subject Term: STRAINS & stresses (Mechanics); Subject Term: SCANNING electron microscopy; Subject Term: SIMULATION methods & models; Author-Supplied Keyword: Compression test; Author-Supplied Keyword: Plastic deformation; Author-Supplied Keyword: Slip; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.actamat.2009.06.029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43619857&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ortensie, R. Ray T1 - Contrails over the Mojave: The Golden Age of Jet Flight Testing at Edwards Air Force Base. JO - Air Power History JF - Air Power History Y1 - 2009///Fall2009 VL - 56 IS - 3 M3 - Book Review SP - 59 EP - 59 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "Contrails over the Mojave: The Golden Age of Jet Flight Testing at Edwards Air Force Base," by George J. Marrett. KW - JET planes KW - FLIGHT testing KW - NONFICTION KW - MARRETT, George J. KW - CONTRAILS Over the Mojave: The Golden Age of Jet Flight Testing at Edwards Air Force Base (Book) N1 - Accession Number: 44351407; Ortensie, R. Ray 1; Affiliation: 1: Staff Historian, HQ Air Education and Training Command, Randolph AFB, Tex.; Source Info: Fall2009, Vol. 56 Issue 3, p59; Subject Term: JET planes; Subject Term: FLIGHT testing; Subject Term: NONFICTION; Reviews & Products: CONTRAILS Over the Mojave: The Golden Age of Jet Flight Testing at Edwards Air Force Base (Book); People: MARRETT, George J.; Number of Pages: 1/2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44351407&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ortensie, R. Ray T1 - Air Power in the New Counter-insurgency Era: The Strategic Importance of USAF Advisory and Assistance Missions. JO - Air Power History JF - Air Power History Y1 - 2009///Fall2009 VL - 56 IS - 3 M3 - Book Review SP - 62 EP - 63 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "Air Power in the New Counter-insurgency Era: The Strategic Importance of USAF Advisory and Assistance Missions," by Alan J. Vick. KW - AIR warfare KW - NONFICTION KW - VICK, Alan J. KW - AIR Power in the New Counterinsurgency Era: The Strategic Importance of USAF Advisory & Assistance Missions (Book) N1 - Accession Number: 44351414; Ortensie, R. Ray 1; Affiliation: 1: Staff Historian, HQ Air Education and Training Command, Randolph AFB, Tex.; Source Info: Fall2009, Vol. 56 Issue 3, p62; Subject Term: AIR warfare; Subject Term: NONFICTION; Reviews & Products: AIR Power in the New Counterinsurgency Era: The Strategic Importance of USAF Advisory & Assistance Missions (Book); People: VICK, Alan J.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44351414&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jacobson, Isabel G. AU - White, Martin R. AU - Smith, Tyler C. AU - Smith, Besa AU - Wells, Timothy S. AU - Gackstetter, Gary D. AU - Boyko, Edward J. T1 - Self-Reported Health Symptoms and Conditions Among Complementary and Alternative Medicine Users in a Large Military Cohort JO - Annals of Epidemiology JF - Annals of Epidemiology Y1 - 2009/09// VL - 19 IS - 9 M3 - Article SP - 613 EP - 622 SN - 10472797 AB - Purpose: To describe medical symptom and condition reporting in relation to complementary and alternative medicine (CAM) use among members of the US military. Methods: CAM was defined as health treatments not widely taught at US medical schools or typically available at US hospitals. By using data from the Millennium Cohort Study, we included participants who completed a survey from 2004 to 2006 (n =86,131) as part of this cross-sectional analysis in which we sought to identify demographic characteristics and types of health-related symptoms and conditions associated with CAM use. Chi-square tests were used to compare health assessed by self-reported symptoms and conditions among those not reporting CAM use with those reporting practitioner-assisted or self-administered CAM. Results: Of 86,131 participants, 30% reported using at least one practitioner-assisted CAM therapy, 27% reported using at least one self-administered CAM therapy, whereas 59% did not report using any CAM therapy. Both women and men who used CAM reported a greater proportion of specific health conditions and health-related symptoms compared with those not reporting CAM use (p <0.05). Conclusions: These findings illustrate that a relatively young adult occupational cohort of military personnel using CAM therapies also report multiple comorbidities which may indicate chronic illness management and poorer overall health. [Copyright &y& Elsevier] AB - Copyright of Annals of Epidemiology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COHORT analysis KW - ALTERNATIVE medicine KW - MEDICAL care -- United States KW - SYMPTOMS KW - DEMOGRAPHIC surveys KW - MILITARY medicine KW - ARMED Forces KW - UNITED States KW - Cohort Studies KW - complementary and alternative medicine ( CAM ) KW - Complementary Therapies KW - Signs and Symptoms N1 - Accession Number: 43615422; Jacobson, Isabel G. 1; Email Address: isabel.jacobson@med.navy.mil White, Martin R. 1 Smith, Tyler C. 1 Smith, Besa 1 Wells, Timothy S. 2 Gackstetter, Gary D. 3 Boyko, Edward J. 4; Affiliation: 1: Department of Defense Center for Deployment Health Research, Naval Health Research Center, San Diego, CA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 3: Analytic Services, Inc. (ANSER), Arlington, VA 4: Seattle Epidemiologic Research and Information Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA; Source Info: Sep2009, Vol. 19 Issue 9, p613; Subject Term: COHORT analysis; Subject Term: ALTERNATIVE medicine; Subject Term: MEDICAL care -- United States; Subject Term: SYMPTOMS; Subject Term: DEMOGRAPHIC surveys; Subject Term: MILITARY medicine; Subject Term: ARMED Forces; Subject Term: UNITED States; Author-Supplied Keyword: Cohort Studies; Author-Supplied Keyword: complementary and alternative medicine ( CAM ); Author-Supplied Keyword: Complementary Therapies; Author-Supplied Keyword: Signs and Symptoms; NAICS/Industry Codes: 928110 National Security; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.annepidem.2009.05.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43615422&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buffington, Andrew AU - Bisi, Mario M. AU - Clover, John M. AU - Hick, P. Paul AU - Jackson, Bernard V. AU - Kuchar, Thomas A. AU - Price, Stephan D. T1 - Measurements of the Gegenschein brightness from the Solar Mass Ejection Imager (SMEI) JO - ICARUS JF - ICARUS Y1 - 2009/09// VL - 203 IS - 1 M3 - Article SP - 124 EP - 133 SN - 00191035 AB - Abstract: The Gegenschein is viewed by the Solar Mass Ejection Imager (SMEI), which has provided near-full-sky broadband visible-light photometric maps for over 5 years. These have an angular resolution of about 0.5° and differential photometric stability of about 1% throughout this time. When individual bright stars are removed from the maps and an empirical sidereal background subtracted, the residue is dominated by the zodiacal light. The unprecedented sky coverage and duration of these measurements enables a definitive characterization of the Gegenschein. This article describes the analysis method for these data, presents a movie with time of the Gegenschein brightness distribution, determines empirical formulae describing its average shape, and discusses its variation with time. These measurements unambiguously confirm previous reports that the Gegenschein surface-brightness distribution has a decided peak in the antisolar point, which rises above a broader background. [Copyright &y& Elsevier] AB - Copyright of ICARUS is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COUNTERGLOW KW - ZODIACAL light KW - SURFACE brightness (Astronomy) KW - ASTRONOMICAL observations KW - INTERPLANETARY dust KW - ASTRONOMICAL photometry KW - Interplanetary dust KW - Photometry KW - Zodiacal light N1 - Accession Number: 43876461; Buffington, Andrew 1; Email Address: abuffington@ucsd.edu Bisi, Mario M. 1 Clover, John M. 1 Hick, P. Paul 1 Jackson, Bernard V. 1 Kuchar, Thomas A. 2 Price, Stephan D. 3; Affiliation: 1: Center for Astrophysics and Space Sciences, University of California, San Diego, 9500 Gilman Drive, MS 0424, La Jolla, CA 92093-0424, USA 2: Institute for Scientific Research, Boston College, Chestnut Hill, MA 02147, USA 3: Air Force Research Laboratory/Space Vehicles Directorate (AFRL/RVB), Hanscom AFB, MA 01731-3010, USA; Source Info: Sep2009, Vol. 203 Issue 1, p124; Subject Term: COUNTERGLOW; Subject Term: ZODIACAL light; Subject Term: SURFACE brightness (Astronomy); Subject Term: ASTRONOMICAL observations; Subject Term: INTERPLANETARY dust; Subject Term: ASTRONOMICAL photometry; Author-Supplied Keyword: Interplanetary dust; Author-Supplied Keyword: Photometry; Author-Supplied Keyword: Zodiacal light; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.icarus.2009.04.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43876461&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wellems, L. David AU - Huang, Danhong AU - Leskova, T. A. AU - Maradudin, A. A. T1 - Optical spectrum and electromagnetic-field distribution at double-groove metallic surface gratings. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2009/09// VL - 106 IS - 5 M3 - Article SP - 053705 EP - 053713 PB - American Institute of Physics SN - 00218979 AB - The Green’s function formalism [see B. Baumeier et al., J. Opt. A, Pure Appl. Opt. 8, S191 (2006)] for calculating the reflection and transmission of light at etched single-groove gratings on both sides of a thin silver film was extended to study the case with double-groove gratings. A splitting of surface-plasmon-polariton (SPP) modes was found due to electromagnetic (EM) coupling between the two grooves in the complex unit cell of the grating. Spectral features corresponding to the split SPP branches (peaks in the transmissivity) were found in this system. In addition, the calculated full spatial distributions of the total EM field were used to provide intuitive explanations for these observations by indicating the high-surface-field regions, the coupling between the two grooves in the same complex unit cell, and the cross coupling between the two nearby grooves located at the upper and lower surfaces of the metal film. The effects on the transmissivity and reflectivity due to changing the depth ratio, groove separation, and lattice constant were also highlighted. The split antisymmetrical SPP mode due to EM coupling between the two grooves in the same complex unit cell, as well as the cross EM coupling between the two nonaligned grooves at the upper and lower surfaces, were found to be responsible for the large peaks found in the transmissivity. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC fields KW - GREEN'S functions KW - REFLECTION (Optics) KW - PLASMONS (Physics) KW - POLARITONS KW - REFLECTANCE KW - METALLIC films N1 - Accession Number: 44193568; Wellems, L. David 1 Huang, Danhong 1 Leskova, T. A. 2 Maradudin, A. A. 2; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117, 2: Department of Physics and Astronomy and Institute for Surface and Interface Science, University of California, Irvine, California 92697,; Source Info: Sep2009, Vol. 106 Issue 5, p053705; Subject Term: ELECTROMAGNETIC fields; Subject Term: GREEN'S functions; Subject Term: REFLECTION (Optics); Subject Term: PLASMONS (Physics); Subject Term: POLARITONS; Subject Term: REFLECTANCE; Subject Term: METALLIC films; Number of Pages: 8p; Illustrations: 1 Diagram, 7 Graphs; Document Type: Article L3 - 10.1063/1.3208039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44193568&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CASE AU - Pekmezci, Murat AU - Keeney, James AU - Schutz, Amanda AU - Clohisy, John C. T1 - Retention of a Well-Fixed Acetabular Component in the Setting of Massive Acetabular Osteolysis and Pelvic Discontinuity A: Case Report. JO - Journal of Bone & Joint Surgery, American Volume JF - Journal of Bone & Joint Surgery, American Volume Y1 - 2009/09// VL - 91 IS - 9 M3 - Case Study SP - 2232 EP - 2237 SN - 00219355 AB - The article presents a case study about a sixty-one-year-old woman with a right-sided pain nine years after a right primary total hip arthroplasty. She states that the pain was getting worse with activity and improved with rest. She also had a history of cholecystectomy, hernia repairs and right knee replacement. The article discusses periacetabular osteolysis and with a treatment of bone stock restoration and stable acetabular fixation. KW - TOTAL hip replacement KW - ARTHROPLASTY KW - CHOLECYSTECTOMY KW - BONE resorption N1 - Accession Number: 44137379; Pekmezci, Murat 1 Keeney, James 2 Schutz, Amanda 3 Clohisy, John C. 3; Email Address: jclohisy@wustl.edu; Affiliation: 1: Division of Orthopaedic Surgery, San Francisco Genera! Hospital, 1001 Potrero Avenue, Room 3A36, San Francisco, CA 94110 2: Wilford Hall Medical Center, United States Air Force, 2200 Bergquist Drive, San Antonio, TX 78236 3: Department of Orthopaedic Surgery, Washington University School of Medicine, 1 Barnes-Jewish Hospital Plaza, Suite 11300 WP, Campus Box 8233, St. Louis, MO 63110; Source Info: Sep2009, Vol. 91 Issue 9, p2232; Subject Term: TOTAL hip replacement; Subject Term: ARTHROPLASTY; Subject Term: CHOLECYSTECTOMY; Subject Term: BONE resorption; Number of Pages: 6p; Illustrations: 2 Color Photographs, 5 Black and White Photographs; Document Type: Case Study L3 - 10.2106/JBJS.H.01336 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44137379&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beason, Charles W. AU - Jauchem, James R. AU - Clark III, C. D. AU - Parker, James E. AU - Fines, David A. T1 - Pulse Variations of a Conducted Energy Weapon (Similar to the TASER® X26 Device): Effects on Muscle Contraction and Threshold for Ventricular Fibrillation. JO - Journal of Forensic Sciences (Wiley-Blackwell) JF - Journal of Forensic Sciences (Wiley-Blackwell) Y1 - 2009/09// VL - 54 IS - 5 M3 - Article SP - 1113 EP - 1118 SN - 00221198 AB - Conducted energy weapons (such as the Advanced TASER X26 model produced by TASER International), incapacitate individuals by causing muscle contractions. To provide information relevant to development of future potential devices, a “Modifiable Electronic Stimulator” was used to evaluate the effects of changing various parameters of the stimulating pulse. Muscle contraction was affected by pulse power, net/gross charge, pulse duration, and pulse repetition frequency. The contraction force increased linearly as each of these factors was increased. Elimination of a precursor pulse from X26-like pulses did not have a significant effect on the normalized force measured. Muscle-contraction force increased as the spacing increased from 5 to 20 cm, with no further change in force above 20 cm of spacing. Therefore, it is suggested that any future developments of new conducted energy weapons should include placement of electrodes a minimum of 20 cm apart so that efficiency of the system is not degraded. In the current study, the 50% probability of fibrillation level of X26-like pulses ranged from 4 to 5 times higher than the X26 itself. Relatively large variations about the X26 operating level were found not to result in fibrillation or asystole. Therefore, it should be possible to design and build an X26-type device that operates efficiently at levels higher than the X26. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Forensic Sciences (Wiley-Blackwell) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MUSCLE contraction KW - VENTRICULAR fibrillation KW - CARDIAC arrest KW - ARRHYTHMIA KW - conducted energy weapon KW - electromuscular incapacitation KW - electronic control devices KW - fibrillation KW - forensic science KW - muscle contraction KW - Sus scrofa KW - TASER KW - TASER International Inc. N1 - Accession Number: 43987834; Beason, Charles W. 1 Jauchem, James R. 2; Email Address: james.jauchem@brooks.af.mil Clark III, C. D. 1 Parker, James E. 1 Fines, David A. 1; Affiliation: 1: Advanced Information Engineering Services, A General Dynamics Company, 3276 Reliance Loop, San Antonio, TX 78235. 2: Directed Energy Bio-effects Division, US Air Force Research Laboratory, 8262 Hawks Road, San Antonio, TX 78235.; Source Info: Sep2009, Vol. 54 Issue 5, p1113; Subject Term: MUSCLE contraction; Subject Term: VENTRICULAR fibrillation; Subject Term: CARDIAC arrest; Subject Term: ARRHYTHMIA; Author-Supplied Keyword: conducted energy weapon; Author-Supplied Keyword: electromuscular incapacitation; Author-Supplied Keyword: electronic control devices; Author-Supplied Keyword: fibrillation; Author-Supplied Keyword: forensic science; Author-Supplied Keyword: muscle contraction; Author-Supplied Keyword: Sus scrofa; Author-Supplied Keyword: TASER; Company/Entity: TASER International Inc. DUNS Number: 832176382 Ticker: TASR; Number of Pages: 6p; Illustrations: 7 Graphs; Document Type: Article L3 - 10.1111/j.1556-4029.2009.01129.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43987834&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heimbuch, B.K. AU - Kinney, K. AU - Nichols, B. AU - Wander, J.D. T1 - The Dry Aerosol Deposition Device (DADD): An instrument for depositing microbial aerosols onto surfaces JO - Journal of Microbiological Methods JF - Journal of Microbiological Methods Y1 - 2009/09// VL - 78 IS - 3 M3 - Article SP - 255 EP - 259 SN - 01677012 AB - Abstract: Concerns surrounding the contamination of infrastructure and equipment with biowarfare agents have led to the development of antimicrobial surfaces/coatings that are designed to “self-sterilize.” Surfaces will likely be contaminated via an aerosol exposure and thus antimicrobial efficacy measurements should also be performed using biological aerosols. Standard methods that use microbial agents suspended in aqueous buffers may provide misleading results that overestimate the performance of the surface. A settling chamber is the most common instrument for applying biological aerosols to surfaces. However, settling chambers have some drawbacks (e.g., slow loading times, large footprint, variable loading, etc.) that make them undesirable for many applications. We have developed a Dry Aerosol Deposition Device (DADD) that uses impaction rather than settling to load surfaces with biological aerosols. The use of impaction allows for rapid and highly reproducible loading of microorganisms onto surfaces. We have demonstrated that the DADD can deliver both Bacillus atrophaeus spores and Staphylococcus aureus vegetative cells to glass coupons at concentrations exceeding 1×104 CFU/cm2. The average coefficient of variation (CV) for sample-to-sample loading within an experiment was 13.6% for spores and 6.1% for S. aureus cells. The DADD is also a relatively simple and inexpensive device that can easily be contained within a 4-foot biological safety cabinet. [Copyright &y& Elsevier] AB - Copyright of Journal of Microbiological Methods is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROSOLS (Sprays) -- Environmental aspects KW - ATMOSPHERIC deposition KW - SCIENTIFIC apparatus & instruments KW - MICROBIAL contamination KW - BIOLOGICAL weapons KW - ANTI-infective agents KW - SURFACES (Technology) KW - SURFACE coatings KW - Bioaerosol KW - Deposition KW - Method KW - Microorganism KW - Particle KW - Spore N1 - Accession Number: 43870242; Heimbuch, B.K. 1; Email Address: brian.heimbuch.ctr@tyndall.af.mil Kinney, K. 1; Email Address: kimberly.kinney.ctr@tyndall.af.mil Nichols, B. 1; Email Address: bob.nichols.ctr@tyndall.af.mil Wander, J.D. 2; Email Address: joe.wander@tyndall.af.mil; Affiliation: 1: Applied Research Associates, 139 Barnes Drive, Suite 2, Tyndall Air Force Base, FL 32403, United States 2: Air Force Research Laboratory, RXQL, 139 Barnes Drive, Suite 2, Tyndall Air Force Base, FL 32403, United States; Source Info: Sep2009, Vol. 78 Issue 3, p255; Subject Term: AEROSOLS (Sprays) -- Environmental aspects; Subject Term: ATMOSPHERIC deposition; Subject Term: SCIENTIFIC apparatus & instruments; Subject Term: MICROBIAL contamination; Subject Term: BIOLOGICAL weapons; Subject Term: ANTI-infective agents; Subject Term: SURFACES (Technology); Subject Term: SURFACE coatings; Author-Supplied Keyword: Bioaerosol; Author-Supplied Keyword: Deposition; Author-Supplied Keyword: Method; Author-Supplied Keyword: Microorganism; Author-Supplied Keyword: Particle; Author-Supplied Keyword: Spore; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 417930 Professional machinery, equipment and supplies merchant wholesalers; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.mimet.2009.06.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43870242&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carney, Carmen M. AU - Mogilvesky, Pavel AU - Parthasarathy, Triplicane A. T1 - Oxidation Behavior of Zirconium Diboride Silicon Carbide Produced by the Spark Plasma Sintering Method. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2009/09// VL - 92 IS - 9 M3 - Article SP - 2046 EP - 2052 PB - Wiley-Blackwell SN - 00027820 AB - Dense samples of ZrB2–20 vol% SiC were successfully fabricated by spark plasma sintering without the use of sintering aids. Oxidation behavior of these samples was characterized by exposing them to 1400°, 1500°, and 1600°C in an ambient atmosphere for 150 min, and by measuring the weight gains of the sample and crucible, as well as the thickness of the oxide scale and the glassy outer layer. The effects of gravity on the viscous outer layer are shown to result in significant heterogeneity within a sample. The oxidation scales were characterized by scanning electron microscopy and transmission electron microscopy with energy dispersive spectroscopy analysis. The oxide scale was found to be composed of three layers: (1) a SiO2-rich glassy outer layer, (2) an intermediate layer of a ZrO2 matrix with interpenetrating SiO2, and (3) a layer containing a ZrO2 matrix enclosing partially oxidized ZrB2 with Si–C–B–O glass inclusions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZIRCONIUM KW - OXIDATION KW - SILICON carbide KW - GLASS KW - SCANNING electron microscopy KW - TRANSMISSION electron microscopy KW - SINTERING KW - SPECTRUM analysis N1 - Accession Number: 43993776; Carney, Carmen M. 1,2; Email Address: ccarney@ues.com Mogilvesky, Pavel 1,2 Parthasarathy, Triplicane A. 1,2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX. 2: UES Inc., Dayton, Ohio 45432.; Source Info: Sep2009, Vol. 92 Issue 9, p2046; Subject Term: ZIRCONIUM; Subject Term: OXIDATION; Subject Term: SILICON carbide; Subject Term: GLASS; Subject Term: SCANNING electron microscopy; Subject Term: TRANSMISSION electron microscopy; Subject Term: SINTERING; Subject Term: SPECTRUM analysis; NAICS/Industry Codes: 238150 Glass and Glazing Contractors; NAICS/Industry Codes: 327214 Glass manufacturing; NAICS/Industry Codes: 416340 Paint, glass and wallpaper merchant wholesalers; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 212210 Iron Ore Mining; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 7p; Illustrations: 1 Color Photograph, 6 Diagrams, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2009.03134.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43993776&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Butler, Michelle A. AU - Corboy, John R. AU - Filley, Christopher M. T1 - How the Conflict between American Psychiatry and Neurology Delayed the Appreciation of Cognitive Dysfunction in Multiple Sclerosis. JO - Neuropsychology Review JF - Neuropsychology Review Y1 - 2009/09// VL - 19 IS - 3 M3 - Article SP - 399 EP - 410 SN - 10407308 AB - Whereas cognitive deficits in multiple sclerosis (MS) were documented in the original clinicopathological description by Charcot, the extent and nature of cognitive dysfunction was poorly understood in the U.S. until over a century later. Our objective was to discern reasons for this misunderstanding and to examine forces shifting this topic to center stage of research and increased awareness in clinical practice. We hypothesized that during the 19th century, conflict between psychiatrists and neurologists over control of treatment of the mentally ill fueled a misunderstanding of the nature of MS which led neurologists to treat diseases of the body, and psychiatrists, diseases of the mind. The importance of cognitive deficits in MS was thus minimized until scientific breakthroughs could once again bring them to light. As the rift between disciplines peaked, awareness of cognitive deficits diminished, and vice versa. This may have been one contributing factor affecting how MS was mistakenly conceptualized for a century. [ABSTRACT FROM AUTHOR] AB - Copyright of Neuropsychology Review is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIPLE sclerosis KW - MEDICAL history KW - PSYCHIATRY -- History KW - NEUROLOGY -- History KW - DEMYELINATION KW - SCHEMAS (Psychology) KW - COGNITION disorders KW - Cognition KW - Demyelinating disease KW - History of medicine KW - History of psychiatry/neurology KW - Multiple sclerosis KW - Schemas N1 - Accession Number: 44206839; Butler, Michelle A. 1; Email Address: michelle.butler@usafa.edu Corboy, John R. 2,3 Filley, Christopher M. 2,3,4; Affiliation: 1: United States Air Force Academy, HQ USAFA/DFBL, 2354 Fairchild Dr., Ste. 6L101B, USAF Academy, Colorado Springs, CO 80840-6228, USA 2: Department of Neurology, University of Colorado Denver School of Medicine, Denver, CO, USA 3: Denver Veterans Affairs Medical Center, Denver, CO, USA 4: Department of Psychiatry, University of Colorado Denver School of Medicine, Denver, CO, USA; Source Info: Sep2009, Vol. 19 Issue 3, p399; Subject Term: MULTIPLE sclerosis; Subject Term: MEDICAL history; Subject Term: PSYCHIATRY -- History; Subject Term: NEUROLOGY -- History; Subject Term: DEMYELINATION; Subject Term: SCHEMAS (Psychology); Subject Term: COGNITION disorders; Author-Supplied Keyword: Cognition; Author-Supplied Keyword: Demyelinating disease; Author-Supplied Keyword: History of medicine; Author-Supplied Keyword: History of psychiatry/neurology; Author-Supplied Keyword: Multiple sclerosis; Author-Supplied Keyword: Schemas; Number of Pages: 12p; Document Type: Article L3 - 10.1007/s11065-009-9089-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44206839&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Witkop, Catherine Takacs T1 - New Prescription Drug Labeling Regulations and the Demise of "the Letter". JO - Obstetrics & Gynecology JF - Obstetrics & Gynecology Y1 - 2009/09// VL - 114 IS - 3 M3 - Article SP - 502 EP - 503 SN - 00297844 AB - The article focuses on the proposed drug labeling regulation by the U.S. Food and Drug Administration as well as disappearance of pregnancy letter-categories from that. As reported, under new regulations, pregnancy and lactation subsections will have risk summary, data sections and clinical considerations and each label will include statement about background risk of birth defects and pregnancy loss in general population. Information on the clearing of pregnancy letter-categories is also given. KW - DRUGS -- Labeling -- Law & legislation KW - PREGNANCY KW - HUMAN abnormalities KW - UNITED States KW - UNITED States. Food & Drug Administration N1 - Accession Number: 44325295; Witkop, Catherine Takacs 1,2; Email Address: katika@aya.yale.edu; Affiliation: 1: Preventive Medicine and Obstetrics and Gynecology, United States Air Force Academy, Colorado Springs, Colorado. 2: Assistant Professor, Obstetrics and Gynecology, Uniformed Services University of Health Sciences, Bethesda, Maryland.; Source Info: Sep2009, Vol. 114 Issue 3, p502; Subject Term: DRUGS -- Labeling -- Law & legislation; Subject Term: PREGNANCY; Subject Term: HUMAN abnormalities; Subject Term: UNITED States; Company/Entity: UNITED States. Food & Drug Administration; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44325295&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Metzgar, David AU - Skochko, Greg AU - Gibbins, Carl AU - Hudson, Nolan AU - Lott, Lisa AU - Jones, Morris S. T1 - Evaluation and Validation of a Real-Time PCR Assay for Detection and Quantitation of Human Adenovirus 14 from Clinical Samples. JO - PLoS ONE JF - PLoS ONE Y1 - 2009/09// VL - 4 IS - 9 M3 - Article SP - 1 EP - 6 PB - Public Library of Science SN - 19326203 AB - In 2007, the Centers for Disease Control and Prevention (CDC) reported that Human adenovirus type 14 (HAdV-14) infected 106 military personnel and was responsible for the death of one U.S. soldier at Lackland Air Force Base in Texas. Identification of the responsible adenovirus, which had not previously been seen in North America and for which rapid diagnostic tools were unavailable, required retrospective analysis at reference laboratories. Initial quarantine measures were also reliant on relatively slow traditional PCR analysis at other locations. To address this problem, we developed a real-time PCR assay that detects a 225 base pair sequence in the HAdV-14a hexon gene. Fifty-one oropharyngeal swab specimens from the Naval Health Research Center, San Diego, CA and Advanced Diagnostic Laboratory, Lackland AFB, TX were used to validate the new assay. The described assay detected eight of eight and 19 of 19 confirmed HAdV-14a clinical isolates in two separate cohorts from respiratory disease outbreaks. The real-time PCR assay had a wide dynamic range, detecting from 102 to 107 copies of genomic DNA per reaction. The assay did not cross-react with other adenoviruses, influenza, respiratory syncytial virus, or common respiratory tract bacteria. The described assay is easy to use, sensitive and specific for HAdV-14a in clinical throat swab specimens, and very rapid since turnaround time is less than four hours to obtain an answer. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESPIRATORY diseases KW - ADENOVIRUSES KW - INFLUENZA KW - NATIONAL health services KW - TEXAS KW - NORTH America KW - SAN Diego (Calif.) KW - CALIFORNIA KW - CENTERS for Disease Control & Prevention (U.S.) N1 - Accession Number: 55980408; Metzgar, David 1 Skochko, Greg 2 Gibbins, Carl 2 Hudson, Nolan 2 Lott, Lisa 3 Jones, Morris S. 2; Email Address: drmorrisj@yahoo.com; Affiliation: 1: Department of Respiratory Disease Research, Naval Health Research Center, San Diego, California, United States of America 2: Clinical Investigation Facility, David Grant United States Air Force (USAF) Medical Center, Travis, California, United States of America 3: Advanced Diagnostic Laboratory, Lackland Air Force Base (AFB), Texas, United States of America; Source Info: 2009, Vol. 4 Issue 9, p1; Subject Term: RESPIRATORY diseases; Subject Term: ADENOVIRUSES; Subject Term: INFLUENZA; Subject Term: NATIONAL health services; Subject Term: TEXAS; Subject Term: NORTH America; Subject Term: SAN Diego (Calif.); Subject Term: CALIFORNIA; Company/Entity: CENTERS for Disease Control & Prevention (U.S.); NAICS/Industry Codes: 923120 Administration of Public Health Programs; Number of Pages: 6p; Illustrations: 1 Diagram, 4 Charts, 1 Graph; Document Type: Article L3 - 10.1371/journal.pone.0007081 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55980408&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dodd, James A. AU - Baker, Paul M. AU - Hwang, Eunsook S. AU - Sporleder, David AU - Stearns, Jaime A. AU - Chambreau, Steven D. AU - Braunstein, Matthew AU - Conforti, Patrick F. T1 - Hyperthermal atomic oxygen source for near-space simulation experiments. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2009/09// VL - 80 IS - 9 M3 - Article SP - 093104 PB - American Institute of Physics SN - 00346748 AB - A hyperthermal atomic oxygen (AO) beam facility has been developed to investigate the collisions of high-velocity AO atoms with vapor-phase counterflow. Application of 4.5 kW, 2.4 GHz microwave power in the source chamber creates a continuous discharge in flowing O2 gas. The O2 feedstock is introduced into the source chamber in a vortex flow to constrain the plasma to the center region, with the chamber geometry promoting resonant excitation of the TM011 mode to localize the energy deposition in the vicinity of the aluminum nitride (AlN) expansion nozzle. The approximately 3500 K environment serves to dissociate the O2, resulting in an effluent consisting of 40% AO by number density. Downstream of the nozzle, a silicon carbide (SiC) skimmer selects the center portion of the discharge effluent, prior to the expansion reaching the first shock front and rethermalizing, creating a beam with a derived 2.5 km s-1 velocity. Differential pumping of the skimmer chamber, an optional intermediate chamber and reaction chamber maintains a reaction chamber pressure in the mid-10-6 to mid-10-5 Torr range. The beam has been characterized with regard to total AO beam flux, O2 dissociation fraction, and AO spatial profile using time-of-flight mass spectrometric and Kapton-H erosion measurements. A series of reactions AO+CnH2n (n=2–4) has been studied under single-collision conditions using mass spectrometric product detection, and at higher background pressure detecting dispersed IR emissions from primary and secondary products using a step-scan Michelson interferometer. In a more recent AO crossed-beam experiment, number densities and predicted IR emission intensities have been modeled using the direct simulation Monte Carlo technique. The results have been used to guide the experimental conditions. IR emission intensity predictions are compared to detected signal levels to estimate absolute reaction cross sections. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATOMS KW - RESEARCH KW - MICROWAVES KW - SILICON carbide KW - INTERFEROMETERS KW - NOZZLES N1 - Accession Number: 44388160; Dodd, James A. 1 Baker, Paul M. 1 Hwang, Eunsook S. 1 Sporleder, David 1 Stearns, Jaime A. 1 Chambreau, Steven D. 2 Braunstein, Matthew 3 Conforti, Patrick F. 3; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731, 2: Propulsion Directorate, Air Force Research Laboratory, Edwards AFB, California 93524, 3: Spectral Sciences, Inc., 4 Fourth Ave., Burlington, Massachusetts 01803,; Source Info: Sep2009, Vol. 80 Issue 9, p093104; Subject Term: ATOMS; Subject Term: RESEARCH; Subject Term: MICROWAVES; Subject Term: SILICON carbide; Subject Term: INTERFEROMETERS; Subject Term: NOZZLES; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 326198 All other plastic product manufacturing; NAICS/Industry Codes: 326199 All Other Plastics Product Manufacturing; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 16p; Illustrations: 4 Diagrams, 5 Charts, 9 Graphs; Document Type: Article L3 - 10.1063/1.3212676 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44388160&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hoff, B. W. AU - Mardahl, P. J. AU - Gilgenbach, R. M. AU - Haworth, M. D. AU - French, D. M. AU - Lau, Y. Y. AU - Franzi, M. T1 - Microwave window breakdown experiments and simulations on the UM/L-3 relativistic magnetron. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2009/09// VL - 80 IS - 9 M3 - Article SP - 094702 PB - American Institute of Physics SN - 00346748 AB - Experiments have been performed on the UM/L-3 (6-vane, L-band) relativistic magnetron to test a new microwave window configuration designed to limit vacuum side breakdown. In the baseline case, acrylic microwave windows were mounted between three of the waveguide coupling cavities in the anode block vacuum housing and the output waveguides. Each of the six 3 cm deep coupling cavities is separated from its corresponding anode cavity by a 1.75 cm wide aperture. In the baseline case, vacuum side window breakdown was observed to initiate at single waveguide output powers close to 20 MW. In the new window configuration, three Air Force Research Laboratory-designed, vacuum-rated directional coupler waveguide segments were mounted between the coupling cavities and the microwave windows. The inclusion of the vacuum side power couplers moved the microwave windows an additional 30 cm away from the anode apertures. Additionally, the Lucite microwave windows were replaced with polycarbonate windows and the microwave window mounts were redesigned to better maintain waveguide continuity in the region around the microwave windows. No vacuum side window breakdown was observed in the new window configuration at single waveguide output powers of 120+MW (a factor of 3 increase in measured microwave pulse duration and factor of 3 increase in measured peak power over the baseline case). Simulations were performed to investigate likely causes for the window breakdown in the original configuration. Results from these simulations have shown that in the original configuration, at typical operating voltage and magnetic field ranges, electrons emitted from the anode block microwave apertures strike the windows with a mean kinetic energy of 33 keV with a standard deviation of 14 keV. Calculations performed using electron impact angle and energy data predict a first generation secondary electron yield of 65% of the primary electron population. The effects of the primary aperture electron impacts, combined with multiplication of the secondary populations, were determined to be the likely causes of the poor microwave window performance in the original configuration. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVES KW - VACUUM KW - MAGNETIC fields KW - SCIENTIFIC experimentation KW - MAGNETRONS N1 - Accession Number: 44388126; Hoff, B. W. 1,2 Mardahl, P. J. 2 Gilgenbach, R. M. 1 Haworth, M. D. 2 French, D. M. 1 Lau, Y. Y. 1 Franzi, M. 1; Affiliation: 1: Department of Nuclear Engineering and Radiological Sciences, Plasma, Pulsed Power and Microwave Laboratory, University of Michigan, Ann Arbor, Michigan 48109, 2: Air Force Research Laboratory, Directed Energy Directorate, Kirtland Air Force Base, Albuquerque, New Mexico 87117,; Source Info: Sep2009, Vol. 80 Issue 9, p094702; Subject Term: MICROWAVES; Subject Term: VACUUM; Subject Term: MAGNETIC fields; Subject Term: SCIENTIFIC experimentation; Subject Term: MAGNETRONS; Number of Pages: 9p; Illustrations: 3 Black and White Photographs, 6 Diagrams, 10 Graphs; Document Type: Article L3 - 10.1063/1.3233917 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44388126&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Uchic, M.D. AU - De Graef, M. AU - Wheeler, R. AU - Dimiduk, D.M. T1 - Microstructural tomography of a superalloy using focused ion beam microscopy JO - Ultramicroscopy JF - Ultramicroscopy Y1 - 2009/09// VL - 109 IS - 10 M3 - Article SP - 1229 EP - 1235 SN - 03043991 AB - Abstract: A focused ion beam (FIB) microscope has been used to simultaneously depth profile and image the microstructure of a nickel base superalloy using normal incidence milling in order to characterize the precipitate microstructure in three dimensions (3D). The normal incidence milling rates of the and phases in this alloy are closely matched when the orientation of the depth-profiled surface is near , which allows for uniform material removal to depths up to a couple of microns. Depth-profiling experiments consisted of automated ion milling and collection of ion-generated secondary-electron images at specified intervals, and was demonstrated for a voxel resolution of roughly . Image-processing software was used for automated processing of the 2D image sequence to render the precipitate structure in 3D. [Copyright &y& Elsevier] AB - Copyright of Ultramicroscopy is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLOGRAPHY KW - IMAGING systems in chemistry KW - METALS -- Microstructure KW - NICKEL alloys KW - HEAT resistant alloys KW - FOCUSED ion beams KW - RESOLUTION (Optics) KW - DIGITAL image processing KW - 3D reconstruction KW - Focused ion beam milling KW - Nickel-base superalloy KW - Serial sectioning N1 - Accession Number: 43769834; Uchic, M.D. 1 De Graef, M. 2; Email Address: degraef@cmu.edu Wheeler, R. 3 Dimiduk, D.M. 1; Affiliation: 1: Materials & Manufacturing Directorate, Air Force Research Laboratory, AFRL/RXLM, Wright-Patterson Air Force Base, OH 45433-7817, USA 2: Department of Materials Science and Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA 3: UES Inc., Dayton, OH 45432, USA; Source Info: Sep2009, Vol. 109 Issue 10, p1229; Subject Term: METALLOGRAPHY; Subject Term: IMAGING systems in chemistry; Subject Term: METALS -- Microstructure; Subject Term: NICKEL alloys; Subject Term: HEAT resistant alloys; Subject Term: FOCUSED ion beams; Subject Term: RESOLUTION (Optics); Subject Term: DIGITAL image processing; Author-Supplied Keyword: 3D reconstruction; Author-Supplied Keyword: Focused ion beam milling; Author-Supplied Keyword: Nickel-base superalloy; Author-Supplied Keyword: Serial sectioning; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ultramic.2009.05.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43769834&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Qingfei Chen AU - Ying-Cheng Lai AU - Dietz, David T1 - Inducing intrinsic localized modes in microelectromechanical cantilever arrays by frequency modulation. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2009/08/31/ VL - 95 IS - 9 M3 - Article SP - 094102 PB - American Institute of Physics SN - 00036951 AB - We articulate a control method to induce intrinsic localized modes at programable bielement cell in driven microcantilever arrays. The idea is to excite a preassigned cantilever to an oscillating state with significantly higher amplitude than the average by using feedback signal to modulate the frequency that drives the whole array. Our control method is thus global, which is advantageous in microsystems as local pinning actuation may be difficult to implement at small scales. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTROMECHANICAL systems KW - RADIO frequency modulation KW - AMPLITUDE modulation KW - FEEDBACK (Electronics) KW - OSCILLATIONS N1 - Accession Number: 44066613; Qingfei Chen 1 Ying-Cheng Lai 1 Dietz, David 2; Affiliation: 1: School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, Arizona 85287, 2: Air Force Research Laboratory, AFRL/RDHE, 3550 Aberdeen Ave. SE, Kirtland AFB, New Mexico 87117,; Source Info: 8/31/2009, Vol. 95 Issue 9, p094102; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: RADIO frequency modulation; Subject Term: AMPLITUDE modulation; Subject Term: FEEDBACK (Electronics); Subject Term: OSCILLATIONS; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.3216054 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44066613&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Thomas M. AU - Friedman, Jeffrey F. AU - Schaffer, Linda C. AU - Viggiano, A. A. T1 - Electron attachment to halomethanes at high temperature: CH2Cl2, CF2Cl2, CH3Cl, and CF3Cl attachment rate constants up to 1100 K. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2009/08/28/ VL - 131 IS - 8 M3 - Article SP - 084302 PB - American Institute of Physics SN - 00219606 AB - We have used a high-temperature flowing-afterglow Langmuir-probe apparatus to measure rate constants for electron attachment to halomethanes which attach electrons very inefficiently at room temperature, yielding Cl- ion product. We studied CH2Cl2 (495–973 K), CF2Cl2 (291–1105 K), and CF3Cl (524–1004 K) and include our recent measurement for CH3Cl (700–1100 K) in the discussion of the electron attachment results. The measured attachment rate constants show Arrhenius behavior in the temperature ranges examined, from which estimates of rate constants at 300 K may be made: CH2Cl2 (1.8×10-13 cm3 s-1), CH3Cl (1.1×10-17 cm3 s-1), and CF3Cl (4.2×10-14 cm3 s-1), all of which are difficult to measure directly. In the case of CF2Cl2, the room temperature rate constant was sufficiently large to be measured (1.6×10-9 cm3 s-1). The Arrhenius plots yield activation energies for the attachment reactions: 390±50 meV (CH2Cl2), 124±20 meV (CF2Cl2), 670±70 meV (CH3Cl), and 406±50 meV (CF3Cl). Comparisons are made with existing data where available. G3 calculations were carried out to obtain reaction energetics. They show that the parent anions of CH2Cl2 CF2Cl2, CH3Cl, and CF3Cl are stable, though CH3Cl- exists only as an electrostatically bound complex. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH temperatures KW - LANGMUIR probes KW - METHANE KW - ELECTRONS KW - ARRHENIUS equation N1 - Accession Number: 43975225; Miller, Thomas M. 1,2; Email Address: thomas.miller@hanscom.af.mil Friedman, Jeffrey F. 1,3 Schaffer, Linda C. 1 Viggiano, A. A. 1; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, 29 Randolph Road, Hanscom Air Force Base, Massachusetts 01731-3010, USA 2: Institute for Scientific Research, Boston College, Chestnut Hill, MA 3: Department of Physics, University of Puerto Rico, Mayaguez, Puerto Rico; Source Info: 8/28/2009, Vol. 131 Issue 8, p084302; Subject Term: HIGH temperatures; Subject Term: LANGMUIR probes; Subject Term: METHANE; Subject Term: ELECTRONS; Subject Term: ARRHENIUS equation; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 7p; Illustrations: 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.3212598 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43975225&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sen, Indrani AU - Maheshwari, L. AU - Tamirisakandala, S. AU - Miracle, D.B. AU - Ramamurty, U. T1 - Micromechanisms of damage in a hypereutectic Ti–6Al–4V–B alloy JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2009/08/25/ VL - 518 IS - 1/2 M3 - Article SP - 162 EP - 166 SN - 09215093 AB - Abstract: The tensile stress–strain response and fracture in a hypereutectic Ti–6Al–4V–1.7B (weight percent) alloy were investigated by employing interrupted tensile tests combined with acoustic emission measurements, with the aim to identify the cause for the observed low ductility in this alloy. These tests were complemented with microscopy. The alloy contains TiB whiskers of different length scales, the majority of which include micro-whiskers (∼5–10μm length) and a few primary-whiskers (∼200–300μm length). Although the fracture of both types of whiskers occur during deformation, the former leads to a gradual decrease in the secant modulus whereas initiation of the latter leads to a drastic drop in the modulus along with failure of the specimen, limiting the ductility. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EUTECTIC alloys KW - MICROMECHANICS KW - TITANIUM-aluminum-vanadium alloys KW - STRESS-strain curves KW - ACOUSTIC emission KW - MICROSTRUCTURE KW - DUCTILITY KW - Acoustic emission spectroscopy KW - Interrupted tensile test KW - Microstructure KW - Titanium alloys N1 - Accession Number: 43176064; Sen, Indrani 1 Maheshwari, L. 1 Tamirisakandala, S. 2 Miracle, D.B. 2 Ramamurty, U. 1; Email Address: ramu@materials.iisc.ernet.in; Affiliation: 1: Department of Materials Engineering, Indian Institute of Science, Sir CV Raman Avenue, Bangalore 560012, KA, India 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Aug2009, Vol. 518 Issue 1/2, p162; Subject Term: EUTECTIC alloys; Subject Term: MICROMECHANICS; Subject Term: TITANIUM-aluminum-vanadium alloys; Subject Term: STRESS-strain curves; Subject Term: ACOUSTIC emission; Subject Term: MICROSTRUCTURE; Subject Term: DUCTILITY; Author-Supplied Keyword: Acoustic emission spectroscopy; Author-Supplied Keyword: Interrupted tensile test; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Titanium alloys; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.msea.2009.04.039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43176064&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yarborough, J. M. AU - Lai, Yi-Ying AU - Kaneda, Yushi AU - Hader, Jörg AU - Moloney, Jerome V. AU - Rotter, T. J. AU - Balakrishnan, G. AU - Hains, C. AU - Huffaker, D. AU - Koch, S. W. AU - Bedford, R. T1 - Record pulsed power demonstration of a 2 μm GaSb-based optically pumped semiconductor laser grown lattice-mismatched on an AlAs/GaAs Bragg mirror and substrate. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2009/08/24/ VL - 95 IS - 8 M3 - Article SP - 081112 PB - American Institute of Physics SN - 00036951 AB - An optically pumped semiconductor laser resonant periodic gain structure, grown lattice-mismatched on an AlAs/GaAs Bragg mirror, exhibits a peak pulsed power of 70 W when pumped with a pulsed 1064 nm neodymium doped yttrium aluminum garnet laser. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTORS KW - PULSED power systems KW - ALUMINUM KW - YTTRIUM KW - SEMICONDUCTOR lasers N1 - Accession Number: 43944855; Yarborough, J. M. 1; Email Address: myarborough@optics.arizona.edu Lai, Yi-Ying 1 Kaneda, Yushi 1 Hader, Jörg 1,2 Moloney, Jerome V. 1,2 Rotter, T. J. 3 Balakrishnan, G. 3 Hains, C. 3 Huffaker, D. 4 Koch, S. W. 5 Bedford, R. 6; Affiliation: 1: College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA 2: Nonlinear Control Strategies Inc, 3542 N Geronimo Ave., Tucson, Arizona 85704, USA 3: Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87106, Spain 4: Department of Electrical and Computer Engineering, University of California, Los Angeles, California 90095, USA 5: Department of Physics, University of Marburg, Renthof 5, 35032 Marburg, Germany 6: Air Force Research Laboratory, Sensors Directorate, Wright Patterson AFB, Ohio 45433, USA; Source Info: 8/24/2009, Vol. 95 Issue 8, p081112; Subject Term: SEMICONDUCTORS; Subject Term: PULSED power systems; Subject Term: ALUMINUM; Subject Term: YTTRIUM; Subject Term: SEMICONDUCTOR lasers; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.3212891 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43944855&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Sukesh AU - Wrzesinski, Paul AU - Pestov, Dmitry AU - Gunaratne, Tissa AU - Dantus, Marcos AU - Gord, James R. T1 - Single-beam coherent anti-Stokes Raman scattering spectroscopy of N2 using a shaped 7 fs laser pulse. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2009/08/17/ VL - 95 IS - 7 M3 - Article SP - 074102 PB - American Institute of Physics SN - 00036951 AB - The feasibility is explored by single-beam coherent anti-Stokes Raman scattering (CARS) spectroscopy of gas-phase diatomic molecules related to combusting flows, with implications for gas-phase thermometry. We demonstrate CARS of gas-phase N2 using a shaped ∼7 fs laser pulse, investigate the dependence of the CARS signal on the total pressure of the probed environment, both in pure N2 and in mixtures with Ar, discuss the observed signal-to-noise ratio, and suggest improvements to be considered for reliable single-shot measurements at flame temperatures. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN spectroscopy KW - RAMAN effect KW - PARTICLE beams KW - DIATOMIC molecules KW - TEMPERATURE measurements KW - SPECTRUM analysis N1 - Accession Number: 43887473; Roy, Sukesh 1; Email Address: sroy@woh.rr.com Wrzesinski, Paul 2 Pestov, Dmitry 2 Gunaratne, Tissa 2 Dantus, Marcos 2 Gord, James R. 3; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, Ohio 45431, USA 2: Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA 3: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 8/17/2009, Vol. 95 Issue 7, p074102; Subject Term: RAMAN spectroscopy; Subject Term: RAMAN effect; Subject Term: PARTICLE beams; Subject Term: DIATOMIC molecules; Subject Term: TEMPERATURE measurements; Subject Term: SPECTRUM analysis; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.3207829 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43887473&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - John, Reji AU - Buchanan, Dennis J. AU - Jha, Sushant K. AU - Larsen, James M. T1 - Stability of shot-peen residual stresses in an α+β titanium alloy JO - Scripta Materialia JF - Scripta Materialia Y1 - 2009/08/15/ VL - 61 IS - 4 M3 - Article SP - 343 EP - 346 SN - 13596462 AB - Shot-peen residual stress relaxation due to thermal exposure and fatigue loading was characterized in Ti–6Al–2Sn–4Zr–6Mo. Approximately 80% of the residual stresses were retained at 399°C up to 100h. Under fatigue loading close to yield stress, retention of residual stresses was approximately 85%, 70% and 50% at 260, 316 and 399°C, respectively. Crack growth calculations demonstrate 1.5–5× benefit in life, even for partial credit for shot-peen residual stresses. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STABILITY (Mechanics) KW - SHOT peening KW - RESIDUAL stresses KW - TITANIUM alloys KW - STRESS relaxation (Mechanics) KW - TEMPERATURE effect KW - MATERIALS -- Fatigue KW - Fatigue KW - Relaxation KW - Residual stresses KW - Shot peen KW - Titanium alloy N1 - Accession Number: 41227830; John, Reji 1; Email Address: Reji.John@wpafb.af.mil Buchanan, Dennis J. 2 Jha, Sushant K. 3 Larsen, James M. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, (AFRL/RXLM), Wright-Patterson Air Force Base, OH 45433-7817, USA 2: University of Dayton Research Institute (UDRI), Dayton, OH 45469, USA 3: Universal Technology Corporation, Dayton, OH 45432, USA; Source Info: Aug2009, Vol. 61 Issue 4, p343; Subject Term: STABILITY (Mechanics); Subject Term: SHOT peening; Subject Term: RESIDUAL stresses; Subject Term: TITANIUM alloys; Subject Term: STRESS relaxation (Mechanics); Subject Term: TEMPERATURE effect; Subject Term: MATERIALS -- Fatigue; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Relaxation; Author-Supplied Keyword: Residual stresses; Author-Supplied Keyword: Shot peen; Author-Supplied Keyword: Titanium alloy; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2009.03.038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=41227830&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sands, Brian L. AU - Huang, Shih K. AU - Ganguly, Biswa N. T1 - Current scaling in an atmospheric pressure capillary dielectric barrier discharge. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2009/08/03/ VL - 95 IS - 5 M3 - Article SP - 051502 PB - American Institute of Physics SN - 00036951 AB - Current scaling in an atmospheric pressure capillary dielectric barrier discharge, comprising a structured rare gas flow that extends into ambient air, is characterized by electrical and optical measurements. In the transient glow mode, two current scaling regimes were identified that are separated by the static free shear flow boundary. The peak current was sensitive to cathode placement relative to this flow structure and could be scaled from ∼300 mA to over 5 A. Applying a Boltzmann equation solver, it was found that ∼1% air entrainment into the flow and an E/N≤5×10-16 V cm-2 could account for the observed trends [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRIC devices KW - ELECTRICAL engineering -- Materials KW - ELECTRIC insulators & insulation KW - MAXWELL-Boltzmann distribution law KW - TRANSPORT theory (Mathematics) N1 - Accession Number: 43594066; Sands, Brian L. 1; Email Address: brian.sands@wpafb.af.mil Huang, Shih K. 2 Ganguly, Biswa N. 3; Email Address: biswa.ganguly@wpafb.af.mil; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Rd., Dayton, Ohio 45432, USA 2: Department of Mechanical and Materials Engineering, Center for Advanced Power and Energy Conversion, Wright State University, 3640 Colonel Glenn Hwy., Dayton, Ohio 45435, USA 3: Air Force Research Laboratory, 2645 5th St., Wright Patterson Air Force Base, Ohio 45433, USA; Source Info: 8/3/2009, Vol. 95 Issue 5, p051502; Subject Term: DIELECTRIC devices; Subject Term: ELECTRICAL engineering -- Materials; Subject Term: ELECTRIC insulators & insulation; Subject Term: MAXWELL-Boltzmann distribution law; Subject Term: TRANSPORT theory (Mathematics); NAICS/Industry Codes: 335930 Wiring device manufacturing; NAICS/Industry Codes: 326290 Other rubber product manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.3187939 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43594066&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gordnier, Raymond E. AU - Visbal, Miguel R. AU - Gursul, Ismet AU - Zhijin Wang T1 - Computational and Experimental Investigation of a Nonslender Delta Wing. JO - AIAA Journal JF - AIAA Journal Y1 - 2009/08// VL - 47 IS - 8 M3 - Article SP - 1811 EP - 1825 SN - 00011452 AB - Computational simulations have been performed for a 50-deg-sweep delta wing with a sharp leading edge at a 15 deg angle of attack and moderate Reynolds numbers of Re = 2 x 105s, Re = 6.2 x 105, and Re = 2 x 106. A sixth-order compact-difference scheme with an eighth-order low-pass filter is used to solve the Navier-Stokes equations. Turbulence modeling has been accomplished using an implicit large eddy simulation method that exploits the high-order accuracy of the compact-difference scheme and uses the discriminating higher-order filter to regularize the solution. Computations have been performed on a baseline mesh of 11.3 x 106 grid points and a refined mesh of 35 x 106 grid points. An assessment of grid resolution showed that significantly finer-scale features of the flow could be captured on the refined mesh, providing a more accurate representation of the complex, unsteady, separated flow. Comparisons are also made with high-resolution particle image velocimetry images obtained for the two lower Reynolds numbers. The numerical results are examined to provide a description of the mean and instantaneous flow structure over the delta wing, including the separated vortical flow, vortex breakdown, surface flow features, and surface boundary-layer transition near the symmetry plane. The effect of Reynolds number on each of these features is assessed. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIMULATION methods & models KW - AIRPLANES -- Triangular wings KW - REYNOLDS number KW - DIGITAL filters (Mathematics) KW - NAVIER-Stokes equations KW - TURBULENCE KW - EDDIES KW - BOUNDARY layer (Aerodynamics) N1 - Accession Number: 43828251; Gordnier, Raymond E. 1 Visbal, Miguel R. 1 Gursul, Ismet 2 Zhijin Wang 2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512 2: University of Bath, Bath, England BA2 7AY, United Kingdom; Source Info: Aug2009, Vol. 47 Issue 8, p1811; Subject Term: SIMULATION methods & models; Subject Term: AIRPLANES -- Triangular wings; Subject Term: REYNOLDS number; Subject Term: DIGITAL filters (Mathematics); Subject Term: NAVIER-Stokes equations; Subject Term: TURBULENCE; Subject Term: EDDIES; Subject Term: BOUNDARY layer (Aerodynamics); Number of Pages: 15p; Illustrations: 24 Diagrams, 1 Chart; Document Type: Article L3 - 10.2514/1.37848 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43828251&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, Staci AU - Elliott-DeSorbo, Deborah K. AU - Calabrese, Sarah AU - Wolters, Pamela L. AU - Roby, Gregg AU - Brennan, Tara AU - Wood, Lauren V. T1 - A Comparison of Adherence Assessment Methods Utilized in the United States: Perspectives of Researchers, HIV-Infected Children, and their Caregivers. JO - AIDS Patient Care & STDs JF - AIDS Patient Care & STDs Y1 - 2009/08// VL - 23 IS - 8 M3 - Article SP - 593 EP - 601 PB - Mary Ann Liebert, Inc. SN - 10872914 AB - This study sought to elucidate methodological issues in adherence research by comparing multiple methods of assessing adherence to antiretroviral medication. From 2003 to 2004, 24 youths with vertically infected HIV disease (mean age = 14.0 years; range, 8–18) and their caregivers participated in a 6-month study. These children were all on highly active antiretroviral therapy (HAART) and were relatively healthy (mean CD4 absolute count = 711.8 ± 604.5). Adherence was assessed with the Medication Event Monitoring System (MEMS), pill counts, and interviews. Patients and caregivers completed the Perceptions of Adherence Study Participation (PASP) questionnaire. MEMS provided the most detailed adherence information, and good reliability was indicated by significant correlations with medical markers. Pill counts provided similar adherence rates, while patients and caregivers reported nearly perfect adherence in interviews. Problems were experienced with each method: MEMS were expensive, had cap malfunctions, and lack a consistent guiding principle for data interpretation. With pill counts, families forgot to bring all medication bottles to clinic, and interviews were compromised by social desirability and difficulty reaching families by telephone. Most patients and caregivers believed study participation improved the child's adherence, although PASP ratings were unrelated to adherence at the study endpoint. While MEMS may be most reliable, pill counts offer comparable data and are less costly, while interviews seemed least accurate in this study. Most participants reported positive perceptions of their research experience. A consensus among researchers is needed for defining and measuring adherence, and specific recommendations are offered for achieving this goal. [ABSTRACT FROM AUTHOR] AB - Copyright of AIDS Patient Care & STDs is the property of Mary Ann Liebert, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIV-positive persons KW - JUVENILE diseases KW - HIV infections KW - CAREGIVERS KW - CHILDREN -- United States KW - LENTIVIRUS diseases KW - ANTIVIRAL agents KW - SOCIAL desirability KW - UNITED States N1 - Accession Number: 43758120; Martin, Staci 1,2; Email Address: martins@mail.nih.gov Elliott-DeSorbo, Deborah K. 1,3 Calabrese, Sarah 1 Wolters, Pamela L. 1,2 Roby, Gregg 1,4 Brennan, Tara 1,5 Wood, Lauren V. 1,6; Affiliation: 1: National Cancer Institute, Center for Cancer Research, Bethesda, Maryland. 2: Medical Illness Counseling Center, Chevy Chase, Maryland. 3: United States Air Force Academy, Colorado Springs, Colorado. 4: Intramural Clinical Management and Operations Branch, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland. 5: Children's National Medical Center, Washington, D.C. 6: Vaccine Branch, Center for Cancer Research, Bethesda, Maryland.; Source Info: Aug2009, Vol. 23 Issue 8, p593; Subject Term: HIV-positive persons; Subject Term: JUVENILE diseases; Subject Term: HIV infections; Subject Term: CAREGIVERS; Subject Term: CHILDREN -- United States; Subject Term: LENTIVIRUS diseases; Subject Term: ANTIVIRAL agents; Subject Term: SOCIAL desirability; Subject Term: UNITED States; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; Number of Pages: 9p; Illustrations: 3 Charts; Document Type: Article L3 - 10.1089/apc.2009.0021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43758120&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Muratore, C. AU - Voevodin, A. A. T1 - Chameleon Coatings: Adaptive Surfaces to Reduce Friction and Wear in Extreme Environments. JO - Annual Review of Materials Research JF - Annual Review of Materials Research Y1 - 2009/08// VL - 39 IS - 1 M3 - Article SP - 297 EP - 324 SN - 15317331 AB - Adaptive nanocomposite coating materials that automatically and reversibly adjust their surface composition and morphology via multiple mechanisms are a promising development for the reduction of friction and wear over broad ranges of ambient conditions encountered in aerospace applications, such as cycling of temperature and atmospheric composition. Materials selection for these composites is based on extensive study of interactions occurring between solid lubricants and their surroundings, especially with novel in situ surface characterization techniques used to identify adaptive behavior on size scales ranging from 10-10 to 10-4 m. Recent insights on operative solid-lubricant mechanisms and their dependency upon the ambient environment are reviewed as a basis for a discussion of the state of the art in solid-lubricant materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Annual Review of Materials Research is the property of Annual Reviews Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRIBOLOGY KW - SURFACES (Technology) -- Analysis KW - ELECTRON microscopy KW - LUBRICATION & lubricants -- Research KW - ANALYTICAL chemistry KW - aerospace KW - electron microscopy KW - high temperature KW - surface analysis KW - tribology N1 - Accession Number: 44060689; Muratore, C. 1; Email Address: chris.muratore@wpafb.af.mil Voevodin, A. A. 1; Affiliation: 1: Thermal Science and Materials Branch, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: 2009, Vol. 39 Issue 1, p297; Subject Term: TRIBOLOGY; Subject Term: SURFACES (Technology) -- Analysis; Subject Term: ELECTRON microscopy; Subject Term: LUBRICATION & lubricants -- Research; Subject Term: ANALYTICAL chemistry; Author-Supplied Keyword: aerospace; Author-Supplied Keyword: electron microscopy; Author-Supplied Keyword: high temperature; Author-Supplied Keyword: surface analysis; Author-Supplied Keyword: tribology; NAICS/Industry Codes: 324191 Petroleum Lubricating Oil and Grease Manufacturing; Number of Pages: 28p; Document Type: Article L3 - 10.1146/annurev-matsci-082908-145259 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44060689&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Uchic, Michael D. AU - Shade, Paul A. AU - Dimiduk, Dennis M. T1 - Plasticity of Micrometer-Scale Single Crystals in Compression. JO - Annual Review of Materials Research JF - Annual Review of Materials Research Y1 - 2009/08// VL - 39 IS - 1 M3 - Article SP - 361 EP - 386 SN - 15317331 AB - This review examines the recent literature that has focused on uniaxial compression experiments of single crystals at the micrometer scale. Collectively, the studies discovered new regimes of plastic flow that are size-scale dependent and that occur in the absence of strong strain gradients. However, the quantitative comparison of the flow curves between independent studies is hampered by differences in the particular implementations of the testing methodology. Modeling of microcompression experiments using 3-D discrete dislocation simulations has provided valuable insight into the mechanisms that control plastic flow in FCC metals. These efforts identified the importance of the initial dislocation density and distribution of mobile dislocation segments, the influence of free surfaces on that distribution, as well as altered multiplication and hardening responses due to the finite source statistics. Microcrystal experiments also provide a new pathway to characterize the global system dynamics of dislocation ensembles and associated stochastic processes. [ABSTRACT FROM AUTHOR] AB - Copyright of Annual Review of Materials Research is the property of Annual Reviews Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYCRYSTALS KW - PLASTICITY KW - MICROMETERS (Instruments) KW - STOCHASTIC processes KW - FINITE element method KW - ATOMIC weights KW - discrete dislocation simulations KW - experimental techniques KW - flow intermittency KW - microcompression testing KW - size effects KW - strength N1 - Accession Number: 44060691; Uchic, Michael D. 1; Email Address: michael.uchic@wpafbaf.mil Shade, Paul A. 2; Email Address: msshade@iuatsceng.ohio-state.edu Dimiduk, Dennis M. 1; Email Address: dennis.dimiduk@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433 2: Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210; Source Info: 2009, Vol. 39 Issue 1, p361; Subject Term: POLYCRYSTALS; Subject Term: PLASTICITY; Subject Term: MICROMETERS (Instruments); Subject Term: STOCHASTIC processes; Subject Term: FINITE element method; Subject Term: ATOMIC weights; Author-Supplied Keyword: discrete dislocation simulations; Author-Supplied Keyword: experimental techniques; Author-Supplied Keyword: flow intermittency; Author-Supplied Keyword: microcompression testing; Author-Supplied Keyword: size effects; Author-Supplied Keyword: strength; NAICS/Industry Codes: 332210 Cutlery and hand tool manufacturing; NAICS/Industry Codes: 332216 Saw Blade and Handtool Manufacturing; Number of Pages: 26p; Document Type: Article L3 - 10.1146/annurev-matsci-082908-145422 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44060691&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davidson, Molly AU - Kerepesi, Laura AU - Soto, Armando AU - Chan, Victor T1 - d-Serine exposure resulted in gene expression changes implicated in neurodegenerative disorders and neuronal dysfunction in male Fischer 344 rats. JO - Archives of Toxicology JF - Archives of Toxicology Y1 - 2009/08// VL - 83 IS - 8 M3 - Article SP - 747 EP - 762 SN - 03405761 AB - d-Serine, an endogenous amino acid, is involved in many physiological processes through its interaction with the glycine binding site of the N-methyl- d-aspartate (NMDA) receptor. It has important roles in development, learning, and cell death signaling. Recent evidence suggests that decreased function of the NMDA receptor is related to the etiology of schizophrenia, and the use of d-serine as add-on therapy is beneficial in alleviating the symptoms of treatment-refractory schizophrenia. The NMDA receptor also plays a major role in neuronal cell death and neurodegeneration mediated by excitatory amino acid toxicity in ischemia, epilepsy, and trauma. Due to its co-activator function, d-serine can markedly potentiate NMDA-mediated excitotoxicity. To investigate potential adverse effects of d-serine treatment... [ABSTRACT FROM AUTHOR] AB - Copyright of Archives of Toxicology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MEDICAL research KW - AMINO acids KW - GLYCINE KW - CELL death KW - DISEASES -- Causes & theories of causation KW - SCHIZOPHRENIA KW - d-Serine KW - N-methyl- d-aspartate (NMDA) receptor KW - N-methyl-D-aspartate (NMDA) receptor KW - Neuronal dysfunction KW - Pathway analysis KW - Transcriptomic profiling KW - Transcriptomic proWling N1 - Accession Number: 43520789; Davidson, Molly; Email Address: Molly.Davidson@wpafb.af.mil Kerepesi, Laura 1 Soto, Armando 2 Chan, Victor 2; Email Address: victor.chan@wpafb.af.mil; Affiliation: 1: Battelle Memorial Institute, Biotechnology, 505 King Ave. Columbus 43201 USA 2: Applied Biotechnology Branch, Air Force Research Laboratory, Human Effectiveness Directorate, 711th Human Performance Wing, Bldg. 837, 2729 R Street, Area B Wright-Patterson Air Force Base Dayton 45433-5707 USA; Source Info: Aug2009, Vol. 83 Issue 8, p747; Subject Term: MEDICAL research; Subject Term: AMINO acids; Subject Term: GLYCINE; Subject Term: CELL death; Subject Term: DISEASES -- Causes & theories of causation; Subject Term: SCHIZOPHRENIA; Author-Supplied Keyword: d-Serine; Author-Supplied Keyword: N-methyl- d-aspartate (NMDA) receptor; Author-Supplied Keyword: N-methyl-D-aspartate (NMDA) receptor; Author-Supplied Keyword: Neuronal dysfunction; Author-Supplied Keyword: Pathway analysis; Author-Supplied Keyword: Transcriptomic profiling; Author-Supplied Keyword: Transcriptomic proWling; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 16p; Illustrations: 5 Diagrams, 3 Charts; Document Type: Article L3 - 10.1007/s00204-009-0405-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43520789&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - SCHULTZ, NATASHA B. AU - MATTHEWS, GERALD AU - WARM, JOEL S. AU - WASHBURN, DAVID A. T1 - A transcranial Doppler sonography study of shoot/don't-shoot responding. JO - Behavior Research Methods JF - Behavior Research Methods Y1 - 2009/08// VL - 41 IS - 3 M3 - Article SP - 593 EP - 597 SN - 1554351X AB - The purpose of this study was to examine the relationship between changes in cerebral blood-flow velocity and performance on a speeded shoot/don't-shoot task. Brain activity as indicated by cerebral blood-flow velocity (hemovelocity) was recorded using the transcranial Doppler ultrasonography. A shoot/don't-shoot decision-making task presented participants with threat/nonthreat stimuli in the form of bull's-eye images of various colors. Participants were required to shoot threat targets using a laser-modified handgun. Results support a vigilance decrement in both the performance measures and hemovelocity. Performance, as measured by reaction time, number of hits, and marksmanship, decreased across the length of the vigil. Hemovelocity slowed across the left and right hemispheres as the task progressed, and hemovelocity was slower in the right hemisphere than in the left hemisphere. [ABSTRACT FROM AUTHOR] AB - Copyright of Behavior Research Methods is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSCRANIAL Doppler ultrasonography KW - CEREBRAL circulation KW - DECISION making KW - VIGILANCE (Psychology) KW - REACTION time KW - SHOOTING (Sports) KW - CEREBRAL hemispheres N1 - Accession Number: 43316282; SCHULTZ, NATASHA B. 1 MATTHEWS, GERALD 2 WARM, JOEL S. 3 WASHBURN, DAVID A. 1; Email Address: dwashburn@gsu.edu; Affiliation: 1: Georgia State University, Atlanta, Georgia 2: University of Cincinnati, Cincinnati, Ohio 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio; Source Info: Aug2009, Vol. 41 Issue 3, p593; Subject Term: TRANSCRANIAL Doppler ultrasonography; Subject Term: CEREBRAL circulation; Subject Term: DECISION making; Subject Term: VIGILANCE (Psychology); Subject Term: REACTION time; Subject Term: SHOOTING (Sports); Subject Term: CEREBRAL hemispheres; Number of Pages: 5p; Illustrations: 1 Black and White Photograph; Document Type: Article L3 - 10.3758/BRM.41.3.593 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43316282&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hameed, Sultan AU - Norwood, Henry H. AU - Flanagan, Michael AU - Feldstein, Steven AU - Chien-hsiung Yang T1 - The Influence of El Niño on the Spring Fallout of Asian Bird Species at Attu Island. JO - Earth Interactions JF - Earth Interactions Y1 - 2009/08// VL - 13 IS - 7 M3 - Article SP - 1 EP - 22 PB - American Meteorological Society SN - 10873562 AB - Several studies have documented the effect of the recent secular climate warming on the distributions and geographical ranges of birds. Here the authors report the strong impact of a recurring climatic pattern in the equatorial Pacific, the El Niño–Southern Oscillation (ENSO) cycle of warm (El Niño) and cold (La Niña) events, on spring migrants along the Far Eastern flyway in northeast Asia. In El Niño years, an unusually large number of birds that use the flyway are observed at Attu Island, westernmost of the Aleutian Islands, nearly 960 km away from the Asian coast. This study is based on a 20-yr dataset documenting the year-to-year variation of Asian birds arriving on Attu in the spring season and uses a three-phased analytical methodology to examine climate impacts on bird movements and populations. The authors offer evidence that birds are displaced toward the Attu area in strong eastward-moving storms. They also present results from a reverse trajectory model that was used to simulate trajectories that a sample of Attu arrivals likely followed in reaching the island. In a statistical analysis, it is shown that 79% of the variation of the Asian birds is explained by a single climate variable: sea surface temperature in the eastern equatorial Pacific in the previous fall. It is the rise in sea surface temperature in this region, more than 8000 km from Attu, that characterizes the onset of an El Niño episode. Examining those years for which there was a strong ENSO signal in the fall, it is found that the following May is characterized by anomalously strong westerly winds in the northwest Pacific, conditions that are appropriate for large Asian bird fallouts at Attu. Because of the time lag between the fall sea surface temperatures in the El Niño region and the spring Asian bird count at Attu, and the strong correlation between these two quantities, the number of Asian birds arriving at Attu in spring is predictable in the previous autumn. Such predictions are presented for several years. [ABSTRACT FROM AUTHOR] AB - Copyright of Earth Interactions is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CLIMATIC changes KW - BIRD watching KW - ATMOSPHERIC pressure KW - OCEAN-atmosphere interaction KW - OCEAN currents KW - EFFECT of atmospheric temperature on birds KW - EL Nino Current KW - PACIFIC Ocean KW - ATTU Island (Alaska) KW - ALASKA KW - ASIA KW - Aleutian birds KW - Attu KW - Bird migration KW - ENSO N1 - Accession Number: 47710073; Hameed, Sultan 1; Email Address: shameed@notes.cc.sunysb.edu Norwood, Henry H. Flanagan, Michael 1 Feldstein, Steven 2 Chien-hsiung Yang 3; Affiliation: 1: School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, New York. 2: Earth and Environmental Systems Institute, The Pennsylvania State University, University Park, Pennsylvania. 3: Voluntary Emeritus Corps, U.S. Air Force Research Laboratory, Hanscom AFB, Bedford, Massachusetts.; Source Info: 2008, Vol. 13 Issue 7, p1; Subject Term: CLIMATIC changes; Subject Term: BIRD watching; Subject Term: ATMOSPHERIC pressure; Subject Term: OCEAN-atmosphere interaction; Subject Term: OCEAN currents; Subject Term: EFFECT of atmospheric temperature on birds; Subject Term: EL Nino Current; Subject Term: PACIFIC Ocean; Subject Term: ATTU Island (Alaska); Subject Term: ALASKA; Subject Term: ASIA; Author-Supplied Keyword: Aleutian birds; Author-Supplied Keyword: Attu; Author-Supplied Keyword: Bird migration; Author-Supplied Keyword: ENSO; Number of Pages: 22p; Illustrations: 1 Chart, 3 Graphs, 3 Maps; Document Type: Article L3 - 10.1175/2009EI272.1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47710073&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Perlovsky, Leonid I. T1 - "Vague-to-Crisp" Neural Mechanism of Perception. JO - IEEE Transactions on Neural Networks JF - IEEE Transactions on Neural Networks Y1 - 2009/08// VL - 20 IS - 8 M3 - Article SP - 1363 EP - 1367 SN - 10459227 AB - This brief describes neural modeling fields (NMFs) for object perception a bio-inspired paradigm. We discuss previous difficulties in object perception algorithms encountered since the 1950s, and describe flow NMF overcomes these difficulties. NMF mechanisms are compared to recent experimental neuroimaging observations, which have demonstrated that initial top-down signals are vague and during perception they evolve into crisp representations matching the bottom-up signals from observed objects. Neural and mathematical mechanisms are described and future research directions outlined. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Neural Networks is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEURAL networks (Neurobiology) KW - COGNITIVE neuroscience KW - NEUROBIOLOGY KW - PERCEPTION KW - INTELLECT KW - BRAIN imaging KW - "vague-to-crisp" KW - Brain imaging KW - brain mechanisms KW - cognition KW - cognitive engineering KW - dynamic logic KW - neural mechanisms KW - neural networks KW - object recognition KW - perception N1 - Accession Number: 44111462; Perlovsky, Leonid I. 1,2; Email Address: leonid@seas.harvard.edu; Affiliation: 1: Harvard University, Cambridge, MA 02138 USA 2: U.S. Air Force Research Laboratory, Sensors Directorate, Hanscom, MA 01731 USA; Source Info: Aug2009, Vol. 20 Issue 8, p1363; Subject Term: NEURAL networks (Neurobiology); Subject Term: COGNITIVE neuroscience; Subject Term: NEUROBIOLOGY; Subject Term: PERCEPTION; Subject Term: INTELLECT; Subject Term: BRAIN imaging; Author-Supplied Keyword: "vague-to-crisp"; Author-Supplied Keyword: Brain imaging; Author-Supplied Keyword: brain mechanisms; Author-Supplied Keyword: cognition; Author-Supplied Keyword: cognitive engineering; Author-Supplied Keyword: dynamic logic; Author-Supplied Keyword: neural mechanisms; Author-Supplied Keyword: neural networks; Author-Supplied Keyword: object recognition; Author-Supplied Keyword: perception; Number of Pages: 5p; Illustrations: 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1109/TNN.2009.2025501 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44111462&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hersey, R.K. AU - Melvin, W.L. AU - McClellan, J.H. AU - Culpepper, E. T1 - Adaptive ground clutter suppression for conformal array radar systems. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2009/08// VL - 3 IS - 4 M3 - Article SP - 357 EP - 372 PB - Institution of Engineering & Technology SN - 17518784 AB - Conformal arrays (CFAs) possess certain desirable characteristics for deployment on unmanned aerial vehicles and other payload-limited platforms. However, the CFA non-planar geometry induces clutter non-stationarity, resulting in elevated signal-to-interference-plus-noise ratio (SINR) loss when applying conventional space–time adaptive processing (STAP) algorithms. Non-stationary clutter leads to covariance matrix estimation error and, consequently, an erroneous STAP frequency response. In this study, the authors examine two practical conformal antenna configurations: a belly-mounted canoe and a nose-mounted, chined shape. Using high-fidelity signal models, the authors show traditional STAP losses in excess of 10 dB because of the effects of clutter non-stationarity. The authors then investigate a number of ameliorating techniques compatible with standard STAP implementation, including localised processing, localised processing with time-varying weights, equivalent uniform linear array transformation, angle–Doppler warping and higher-order angle–Doppler warping. The authors demonstrate very good performance for the higher-order angle–Doppler warping method applied to the chined radome shape, with peak adaptive SINR losses reduced from nearly 16 dB for the uncompensated case to 3 dB of loss consistent with performance attainable in a homogeneous clutter environment. The authors also find good performance for three-dimensional angle–Doppler warping over azimuth, elevation and Doppler when applied to the tapered canoe shape, with uncompensated losses of roughly 14 dB reduced to 3 dB, again a level compatible with STAP applied in a homogeneous clutter environment. The authors thus show that CFA STAP can yield performance similar to that of a conventional planar array when using appropriate compensation methods. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNA arrays KW - ALGORITHMS KW - SPACE & time KW - ANALYSIS of covariance KW - ANTENNAS (Electronics) KW - FREQUENCY response (Dynamics) N1 - Accession Number: 43720488; Hersey, R.K. 1 Melvin, W.L. 1,2 McClellan, J.H. 2 Culpepper, E. 3; Email Address: bill.melvin@gtri.gatech.edu; Affiliation: 1: Sensors and Electromagnetic Applications Laboratory, Georgia Tech Research Institute, Georgia Institute of Technology, Atlanta, GA, USA 2: Department of Electrical and Computer Engineering, Georgia Institute of Technology, Center for Signal and Image Processing, Atlanta, GA, USA 3: Air Force Research Laboratory, Sensors Directorate, WPAFB, OH, USA; Source Info: Aug2009, Vol. 3 Issue 4, p357; Subject Term: ANTENNA arrays; Subject Term: ALGORITHMS; Subject Term: SPACE & time; Subject Term: ANALYSIS of covariance; Subject Term: ANTENNAS (Electronics); Subject Term: FREQUENCY response (Dynamics); NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; Number of Pages: 16p; Illustrations: 1 Diagram, 3 Charts, 19 Graphs; Document Type: Article L3 - 10.1049/iet-rsn.2008.0149 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43720488&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rebmann, Terri AU - Clements, Bruce W. AU - Bailey, Jeffrey A. AU - Evans, R. Gregory T1 - Organophosphate Antidote Auto-Injectors vs. Traditional Administration: A Time Motion Study JO - Journal of Emergency Medicine (0736-4679) JF - Journal of Emergency Medicine (0736-4679) Y1 - 2009/08// VL - 37 IS - 2 M3 - Article SP - 139 EP - 143 SN - 07364679 AB - Abstract: Organophosphates may be used as weapons in chemical attacks on civilian or military populations. Antidotes are available to counter the effects of organophosphates, but they must be administered shortly after exposure. Timing required to administer organophosphate antidotes using traditional equipment vs. auto-injectors has not been studied. This study is intended to quantify and compare the time required to administer organophosphate antidotes using traditional equipment vs. auto-injectors in different treatment conditions. The study was a randomized, un-blinded design. There were 62 participants assigned to one of three groups: Mark I, ATNAA (antidote treatment nerve agent auto-injector), and traditional needle/syringe; however, the results from only 56 participants could be analyzed. Injection trials were videotaped. Subjects also completed a 14-item survey containing demographic questions, perceived ease of injection, receipt of prior training, and preferred training format for organophosphate treatment. Injection time differentials were compared using one-way analysis of variance; post hoc evaluation was performed using the Scheffe test with Bonferroni correction. Fifty-six subjects completed this study. The ATNAA required less time to administer than the Mark I or traditional needle/syringe devices (p < .001). There was no difference in time to administer the Mark I auto-injectors vs. a traditional needle/syringe. There were no differences between injection time and occupation, receipt of prior training, wearing of personal protective equipment, or perceived ease of injection device use. The use of auto-injectors shortens response time for administering organophosphate antidote treatment. An ATNAA auto-injector can be administered in less than half the time it takes to administer a single injection using a needle and syringe or two injections using a Mark I. Mark I can be administered in approximately the same amount of time it takes to administer a single injection using a needle and syringe. The difference between injection time for the ATNAA and needle and syringe would have been even larger if two injections were given with the needle and syringe. The wearing or absence of personal protective equipment does not affect injection time. [Copyright &y& Elsevier] AB - Copyright of Journal of Emergency Medicine (0736-4679) is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOSPHATE esters KW - DRUG delivery devices KW - ADMINISTRATION of drugs KW - RESEARCH KW - CHEMICAL weapons KW - CHEMICAL terrorism KW - ANTIDOTES KW - EMERGENCY medical services KW - CLINICAL trials KW - antidotes KW - auto injector KW - chemical terrorism KW - time and motion studies N1 - Accession Number: 43526891; Rebmann, Terri 1 Clements, Bruce W. 2 Bailey, Jeffrey A. 3 Evans, R. Gregory 1; Affiliation: 1: Institute of Biosecurity, Saint Louis University, School of Public Health, St. Louis, Missouri 2: Center for Emergency Response and Terrorism, Missouri Department of Health and Senior Services, Jefferson City, Missouri 3: United States Air Force Center for Sustainment of Trauma and Readiness Skills, Saint Louis University, School of Medicine, Saint Louis, Missouri; Source Info: Aug2009, Vol. 37 Issue 2, p139; Subject Term: PHOSPHATE esters; Subject Term: DRUG delivery devices; Subject Term: ADMINISTRATION of drugs; Subject Term: RESEARCH; Subject Term: CHEMICAL weapons; Subject Term: CHEMICAL terrorism; Subject Term: ANTIDOTES; Subject Term: EMERGENCY medical services; Subject Term: CLINICAL trials; Author-Supplied Keyword: antidotes; Author-Supplied Keyword: auto injector; Author-Supplied Keyword: chemical terrorism; Author-Supplied Keyword: time and motion studies; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 913130 Municipal police services; NAICS/Industry Codes: 624230 Emergency and Other Relief Services; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jemermed.2007.09.043 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43526891&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Geoff P. Andersen AU - Luis Dussan AU - Fassil Ghebremichael AU - Kenny Chen T1 - Holographic wavefront sensor. JO - Optical Engineering JF - Optical Engineering Y1 - 2009/08// VL - 48 IS - 8 M3 - Article SP - 085801 EP - 085801-5 SN - 00913286 AB - We have constructed a new type of modal wavefront sensor that uses a multiplexed hologram and position-sensing detectors to measure the amplitudes of a preselected set of eight Zernike modes in an input beam. The measurement is all optical, with the calculations made in encoding the holograms themselves. The result is a sensor with no computational overhead or postprocessing that has the potential to operate at megahertz speeds without the need for computer calculations. We have built and tested a prototype device, demonstrating its operation both as a stand-alone wavefront sensor and in a closed-loop adaptive optics control system. [ABSTRACT FROM AUTHOR] AB - Copyright of Optical Engineering is the property of SPIE - International Society of Optical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HOLOGRAPHY KW - DETECTORS KW - MULTIPLEXING (Telecommunication) KW - PROTOTYPES KW - LOOPS (Group theory) KW - ADAPTIVE control systems KW - OPTICAL engineering KW - CODING theory KW - MATHEMATICAL analysis N1 - Accession Number: 46876638; Geoff P. Andersen 1 Luis Dussan 1 Fassil Ghebremichael 1 Kenny Chen 1; Affiliation: 1: United States Air Force Academy, HQ USAFA/DFP, 2354 Fairchild Drive, Suite 2A31, USAF Academy, Colorado 80840; Source Info: Aug2009, Vol. 48 Issue 8, p085801; Subject Term: HOLOGRAPHY; Subject Term: DETECTORS; Subject Term: MULTIPLEXING (Telecommunication); Subject Term: PROTOTYPES; Subject Term: LOOPS (Group theory); Subject Term: ADAPTIVE control systems; Subject Term: OPTICAL engineering; Subject Term: CODING theory; Subject Term: MATHEMATICAL analysis; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=46876638&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kozlowski, G. AU - Kleismit, R. AU - Boeckl, J. AU - Campbell, A. AU - Munbodh, K. AU - Hopkins, S. AU - Koziol, K. AU - Peterson, T. T1 - Electromagnetic characterization of carbon nanotube films by a two-point evanescent microwave method JO - Physica E JF - Physica E Y1 - 2009/08// VL - 41 IS - 8 M3 - Article SP - 1539 EP - 1544 SN - 13869477 AB - Abstract: Electromagnetic characterization of carbon nanotube (CNT) films fabricated by thermal decomposition of silicon carbide (SiC) has been performed. A near-field microwave microscope is used to measure the real and imaginary parts of the complex permittivity of CNT films through the frequency shift and the change in reciprocal quality factor between two extreme positions of an evanescent microwave probe tip (in contact with the sample, and away from interaction with it). A theoretical two-point model is proposed to confirm experimental data, which shows poor conductivity of the CNT film. A comparison of our results with existing theoretical models and experimental data is presented. [Copyright &y& Elsevier] AB - Copyright of Physica E is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETISM KW - CARBON nanotubes KW - MICROWAVES KW - MICROFABRICATION KW - DECOMPOSITION (Chemistry) KW - SILICON carbide KW - PERMITTIVITY KW - Carbon nanotube film KW - Evanescent microwave microscopy KW - Permittivity N1 - Accession Number: 42966603; Kozlowski, G. 1,2; Email Address: gregory.kozlowski@wright.edu Kleismit, R. 1 Boeckl, J. 3 Campbell, A. 3 Munbodh, K. 1 Hopkins, S. 2 Koziol, K. 2 Peterson, T. 3; Affiliation: 1: Physics Department, Wright State University, Dayton, OH 45435, USA 2: Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ, UK 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Aug2009, Vol. 41 Issue 8, p1539; Subject Term: ELECTROMAGNETISM; Subject Term: CARBON nanotubes; Subject Term: MICROWAVES; Subject Term: MICROFABRICATION; Subject Term: DECOMPOSITION (Chemistry); Subject Term: SILICON carbide; Subject Term: PERMITTIVITY; Author-Supplied Keyword: Carbon nanotube film; Author-Supplied Keyword: Evanescent microwave microscopy; Author-Supplied Keyword: Permittivity; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.physe.2009.04.034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=42966603&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boehlert, C.J. AU - Tamirisakandala, S. AU - Curtin, W.A. AU - Miracle, D.B. T1 - Assessment of in situ TiB whisker tensile strength and optimization of TiB-reinforced titanium alloy design JO - Scripta Materialia JF - Scripta Materialia Y1 - 2009/08// VL - 61 IS - 3 M3 - Article SP - 245 EP - 248 SN - 13596462 AB - A statistical model for fracture of aligned-whisker-reinforced metals was used to interpret tensile data of a TiB-reinforced titanium alloy. From this analysis, a TiB whisker strength of 8.0GPa with a Weibull modulus of 2 was predicted. The analysis is consistent with observations of the whisker fragmentation process. Moreover, the analysis rationalizes why high tensile elongation was maintained in this reinforced alloy and identifies the constraints on material properties that are necessary to obtain both high elongation and high strength. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC whiskers KW - TITANIUM alloys KW - BORIDES KW - WEIBULL distribution KW - STRENGTH of materials KW - FRACTURE mechanics KW - Borides KW - Fracture KW - Tensile strength KW - Titanium alloys KW - Whiskers N1 - Accession Number: 39784910; Boehlert, C.J. 1 Tamirisakandala, S. 2; Email Address: seshacharyulu.tamirisakandala.ctr@wpafb.af.mil Curtin, W.A. 3 Miracle, D.B. 4; Affiliation: 1: Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI 48824-1226, USA 2: FMW Composite Systems, Inc., Bridgeport, WV 26330, USA 3: Division of Engineering, Brown University, Providence, RI 02912, USA 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Aug2009, Vol. 61 Issue 3, p245; Subject Term: METALLIC whiskers; Subject Term: TITANIUM alloys; Subject Term: BORIDES; Subject Term: WEIBULL distribution; Subject Term: STRENGTH of materials; Subject Term: FRACTURE mechanics; Author-Supplied Keyword: Borides; Author-Supplied Keyword: Fracture; Author-Supplied Keyword: Tensile strength; Author-Supplied Keyword: Titanium alloys; Author-Supplied Keyword: Whiskers; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2009.03.054 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=39784910&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Intrator, T. P. AU - Wurden, G. A. AU - Waganaar, W. J. AU - Renneke, R. AU - Kostora, M. AU - Dorf, L. AU - Hsu, S. C. AU - Lynn, A. AU - Gilmore, M. AU - Siemon, R. AU - Awe, T. AU - Degnan, J. AU - Grabowski, C. AU - Ruden, E. T1 - DESIGN AND FEATURES OF A MAGNETIZED TARGET FUSION EXPERIMENT. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/07/26/ VL - 1154 IS - 1 M3 - Article SP - 65 EP - 67 PB - American Institute of Physics SN - 0094243X AB - The article focuses on the design and features of a high density Field Reversed Configuration (FRC) at the Los Alamos National Laboratory (LANL). The experimental goals at the laboratory include the increase of trapped bias flux during formation, increase of FRC lifetime and studies of a successfully translated FRC. The final density, temperature, beta and separatrix radius in the experiment will be shown as a function of the ratio of initial formation to smaller translation magnetic field. KW - ELECTRON configuration KW - CONTROLLED fusion KW - MAGNETIC fields KW - RADIUS (Anatomy) KW - LOS Alamos National Laboratory N1 - Accession Number: 43397942; Intrator, T. P. 1 Wurden, G. A. 1 Waganaar, W. J. 1 Renneke, R. 1 Kostora, M. 1 Dorf, L. 1 Hsu, S. C. 1 Lynn, A. 2 Gilmore, M. 2 Siemon, R. 3 Awe, T. 3 Degnan, J. 4 Grabowski, C. 4 Ruden, E. 4; Affiliation: 1: Los Alamos National Laboratory, Los Alamos, NM 87545 USA 2: University of New Mexico, Albuquerque, NM USA 3: University of Nevada Reno, NV USA 4: Air Force Research Laboratory, Kirtland AFB, Albuquerque, NM USA; Source Info: 7/26/2009, Vol. 1154 Issue 1, p65; Subject Term: ELECTRON configuration; Subject Term: CONTROLLED fusion; Subject Term: MAGNETIC fields; Subject Term: RADIUS (Anatomy); Company/Entity: LOS Alamos National Laboratory; Number of Pages: 3p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.3204604 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43397942&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ruden, E. L. AU - Zhang, Shouyin AU - Intrator, T. P. AU - Wurden, G. A. AU - Renneke, R. AU - Waganaar, W. J. AU - Analla, F. T. AU - Grabowski, T. C. T1 - EXPERIMENTAL PROFILE EVOLUTION OF THE FRX-L HIGH DENSITY FIELD REVERSED CONFIGURATION INFERRED FROM MULTICHORD INTERFEROMETRY. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/07/26/ VL - 1154 IS - 1 M3 - Article SP - 163 EP - 164 PB - American Institute of Physics SN - 0094243X AB - The article presents information related to the plasma density of Field Reversed Configurations (FRC) produced by the FRX-L experiment at Los Alamos National Laboratory. The experiment has been performed as an effort to produce a magnetized plasma with closed field lines suitable for compression. In the experiment, The reference beams are given nominally identical optical paths, except they are folded for compactness. KW - PLASMA (Ionized gases) KW - DOMAIN structure KW - LABORATORIES KW - DENSITY KW - LOS Alamos National Laboratory N1 - Accession Number: 43397975; Ruden, E. L. 1 Zhang, Shouyin 2 Intrator, T. P. 2 Wurden, G. A. 2 Renneke, R. 2 Waganaar, W. J. 2 Analla, F. T. 3 Grabowski, T. C. 3; Affiliation: 1: Air Force Research Laboratory, Directed, Energy Directorate Kirtland AFB, NM, 87117-5776 USA 2: Los Alamos National Laboratory, Los Alamos, NM 87545 USA 3: Science Applications International Corporation, Albuquerque, NM 87106 USA; Source Info: 7/26/2009, Vol. 1154 Issue 1, p163; Subject Term: PLASMA (Ionized gases); Subject Term: DOMAIN structure; Subject Term: LABORATORIES; Subject Term: DENSITY; Company/Entity: LOS Alamos National Laboratory; NAICS/Industry Codes: 621511 Medical Laboratories; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 541940 Veterinary Services; Number of Pages: 2p; Illustrations: 1 Color Photograph, 1 Graph; Document Type: Article L3 - 10.1063/1.3204570 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43397975&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pakhomov, Andrei G. AU - Bowman, Angela M. AU - Ibey, Bennett L. AU - Andre, Franck M. AU - Pakhomova, Olga N. AU - Schoenbach, Karl H. T1 - Lipid nanopores can form a stable, ion channel-like conduction pathway in cell membrane JO - Biochemical & Biophysical Research Communications JF - Biochemical & Biophysical Research Communications Y1 - 2009/07/24/ VL - 385 IS - 2 M3 - Article SP - 181 EP - 186 SN - 0006291X AB - Abstract: Cell permeabilization by electric pulses (EPs), or electroporation, has been well established as a tool to indiscriminately increase membrane flows of water solutes down the concentration and voltage gradients. However, we found that EPs of nanosecond duration (nsEPs) trigger formation of voltage-sensitive and inward-rectifying membrane pores. NsEP-treated cells remain mostly impermeable to propidium, suggesting that the maximum pore size is ∼1nm. The ion-channel-like properties of nsEP-opened nanopores vanish if they break into larger, propidium-permeable “conventional” pores. However, nanopores can be stable for many minutes and significantly impact cell electrolyte and water balance. Multiple nsEPs cause fast cell swelling and blebbing, whereas opening of larger pores with digitonin abolishes swelling and causes blebs to implode. The lipid nature of nsEP-opened nanopores is confirmed by fast externalization of phosphatidylserine residues. Nanopores constitute a previously unexplored ion transport pathway that supplements classic ion channels but is distinctly different from them. [Copyright &y& Elsevier] AB - Copyright of Biochemical & Biophysical Research Communications is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIPIDS KW - NANOSTRUCTURES KW - ION channels KW - CELL membranes -- Electric properties KW - ELECTROPORATION KW - PERMEABILITY KW - PHOSPHATIDYLSERINES KW - Electric pulses KW - Electroporation KW - Membrane lipids KW - Membrane permeability KW - Pores N1 - Accession Number: 41238392; Pakhomov, Andrei G. 1; Email Address: andrei@pakhomov.net Bowman, Angela M. 1 Ibey, Bennett L. 2 Andre, Franck M. 1 Pakhomova, Olga N. 1 Schoenbach, Karl H. 1; Affiliation: 1: Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, USA 2: Radio Frequency Radiation Branch, Human Effectiveness Directorate, Air Force Research Laboratory, Brooks City Base, San Antonio, TX, USA; Source Info: Jul2009, Vol. 385 Issue 2, p181; Subject Term: LIPIDS; Subject Term: NANOSTRUCTURES; Subject Term: ION channels; Subject Term: CELL membranes -- Electric properties; Subject Term: ELECTROPORATION; Subject Term: PERMEABILITY; Subject Term: PHOSPHATIDYLSERINES; Author-Supplied Keyword: Electric pulses; Author-Supplied Keyword: Electroporation; Author-Supplied Keyword: Membrane lipids; Author-Supplied Keyword: Membrane permeability; Author-Supplied Keyword: Pores; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.bbrc.2009.05.035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=41238392&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heinz, Hendrik AU - Farmer, Barry L. AU - Pandey, Ras B. AU - SIocik, Joseph M. AU - Patnaik, Soumya S. AU - Pachter, Ruth AU - Naik, Rajesh R. T1 - Nature of Molecular Interactions of Peptides with Gold, Palladium, and Pd-Au Bimetal Surfaces in Aqueous Solution. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2009/07/22/ VL - 131 IS - 28 M3 - Article SP - 9704 EP - 9714 SN - 00027863 AB - We investigated molecular interactions involved in the selective binding of several short peptides derived from phage-display techniques (8-12 amino acids, excluding Cys) to surfaces of Au, Pd, and Pd-Au bimetal. The quantitative analysis of changes in energy and conformation upon adsorption on even {111 } and {100} surfaces was carried out by molecular dynamics simulation using an efficient computational screening technique, including 1000 explicit water molecules and physically meaningful peptide concentrations at pH = 7. Changes in chain conformation from the solution to the adsorbed state over the course of multiple nanoseconds suggest that the peptides preferably interact with vacant sites of the face-centered cubic lattice above the metal surface. Residues that contribute to binding are in direct contact with the metal surfaces, and less-binding residues are separated from the surface by one or two water layers. The strength of adsorption ranges from 0 to -100 kcal/(mol peptide) and scales with the surface energy of the metal (Pd surfaces are more attractive than Au surfaces), the affinity of individual residues versus the affinity of water, and conformation aspects, as well as polarization and charge transfer at the metal interface (only qualitatively considered here). A hexagonal spacing of ∼1.6 Å between available lattice sites on the {111} surfaces accounts for the characteristic adsorption ot aromatic side groups and various other residues (including Tyr, Phe, Asp, His, Arg, Asn, Ser), and a quadratic spacing of ∼2.8 Å between available lattice sites on the {100} surface accounts for a significantly lower affinity to all peptides in favor of mobile water molecules. The combination of these factors suggests a `soft epitaxy" mechanism of binding. On a bimetallic Pd-Au {111} surface, binding patterns are similar, and the polarity of the bimetal junction can modify the binding energy by ∼10 kcal/mol. The results are semiquantitatively supported by experimental measurements of the affinity of peptides and small molecules to metal surfaces as well as results from quantum-mechanical calculations on small peptide and surface fragments. Interfaces were modeled using the consistent valence force field extended for Lennard-Jones parameters for fcc metals which accurately reproduce surface and interface energies [Heinz, H.; Vaia, R. A.; Farmer, B. L.; Naik, R. R. J. Phys. Chem. C 2008, 112, 17281-17290]. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PEPTIDES KW - MOLECULAR association KW - SURFACE chemistry KW - MOLECULAR dynamics KW - LAMINATED metals KW - SALTWATER solutions N1 - Accession Number: 43815276; Heinz, Hendrik 1; Email Address: hendrik.heinz@uakron.edu Farmer, Barry L. 2 Pandey, Ras B. 3 SIocik, Joseph M. 2 Patnaik, Soumya S. 2 Pachter, Ruth 2 Naik, Rajesh R. 2; Affiliation: 1: Department of Polymer Engineering, University of Akron, Akrbn, Ohio 44325 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright-Patterson AFB, Ohio 45433 3: Department of Physics and Astronomy, University of Southern Mississippi, Hattiesburg, Mississippi 39406; Source Info: 7/22/2009, Vol. 131 Issue 28, p9704; Subject Term: PEPTIDES; Subject Term: MOLECULAR association; Subject Term: SURFACE chemistry; Subject Term: MOLECULAR dynamics; Subject Term: LAMINATED metals; Subject Term: SALTWATER solutions; Number of Pages: 11p; Illustrations: 2 Diagrams, 4 Charts, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43815276&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Amer, Maher S. AU - Maguire, John F. T1 - On the compressibility of C60 individual molecules JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2009/07/16/ VL - 476 IS - 4-6 M3 - Article SP - 232 EP - 235 SN - 00092614 AB - Abstract: Theoretical studies have estimated the bulk modulus of individual C60 molecules to be twice to three times as stiff as diamond. In this Letter, we investigate, for the first time, solvent effects on the compressibility of individual fullerene molecules using molecular dynamic simulation. Interaction with water and methanol was found to significantly affect the fullerene P–V EOS leading to significantly less compressible fullerene molecule. This study sheds important lights on the fact that the compressibility of fullerene molecules cannot be considered out of context of their chemical environment. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPRESSIBILITY KW - FULLERENES KW - MOLECULAR dynamics KW - METHANOL KW - ELASTICITY KW - SIMULATION methods & models N1 - Accession Number: 43176391; Amer, Maher S. 1; Email Address: maher.amer@wright.edu Maguire, John F. 2; Affiliation: 1: Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45435, United States 2: Air Force Research Laboratory, Materials Directorate, OH 45433, United States; Source Info: Jul2009, Vol. 476 Issue 4-6, p232; Subject Term: COMPRESSIBILITY; Subject Term: FULLERENES; Subject Term: MOLECULAR dynamics; Subject Term: METHANOL; Subject Term: ELASTICITY; Subject Term: SIMULATION methods & models; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.cplett.2009.06.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43176391&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bontha, Srikanth AU - Klingbeil, Nathan W. AU - Kobryn, Pamela A. AU - Fraser, Hamish L. T1 - Effects of process variables and size-scale on solidification microstructure in beam-based fabrication of bulky 3D structures JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2009/07/15/ VL - 513-514 M3 - Article SP - 311 EP - 318 SN - 09215093 AB - Abstract: A number of laser and electron beam-based fabrication processes are under consideration for aerospace components, where the ability to obtain a consistent and desirable microstructure and resulting mechanical properties is of critical concern. To this end, this work employs a combination of analytical and numerical modeling approaches to investigate the effects of process variables and size-scale on solidification microstructure (grain size and morphology) in beam-based fabrication of bulky 3D structures. Thermal process maps are developed for predicting solidification microstructure in any material system, and results are plotted on solidification maps to investigate trends in grain size and morphology in Ti–6Al–4V. The results of this work suggest that changes in process variables (beam power and velocity) can result in a grading of the microstructure throughout the depth of the deposit, with a transition from columnar to mixed or equiaxed microstructure at higher powers. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLIDIFICATION KW - MICROSTRUCTURE KW - CRYSTALS KW - MICROFABRICATION KW - ELECTRON beams -- Industrial applications KW - TITANIUM-aluminum-vanadium alloys KW - MATERIALS science KW - LASERS in chemistry KW - Electron beam manufacturing KW - Finite element modeling KW - Laser deposition KW - Rosenthal solution KW - Solidification microstructure KW - Ti–6Al–4V N1 - Accession Number: 38910888; Bontha, Srikanth 1 Klingbeil, Nathan W. 1; Email Address: nathan.klingbeil@wright.edu Kobryn, Pamela A. 2 Fraser, Hamish L. 3; Affiliation: 1: Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45435, United States 2: Materials and Manufacturing Directorate (AFRL/MLSC), Air Force Research Laboratory, WPAFB, OH 45433, United States 3: Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, United States; Source Info: Jul2009, Vol. 513-514, p311; Subject Term: SOLIDIFICATION; Subject Term: MICROSTRUCTURE; Subject Term: CRYSTALS; Subject Term: MICROFABRICATION; Subject Term: ELECTRON beams -- Industrial applications; Subject Term: TITANIUM-aluminum-vanadium alloys; Subject Term: MATERIALS science; Subject Term: LASERS in chemistry; Author-Supplied Keyword: Electron beam manufacturing; Author-Supplied Keyword: Finite element modeling; Author-Supplied Keyword: Laser deposition; Author-Supplied Keyword: Rosenthal solution; Author-Supplied Keyword: Solidification microstructure; Author-Supplied Keyword: Ti–6Al–4V; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.msea.2009.02.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38910888&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Glavicic, M.G. AU - Bartha, B.B. AU - Jha, S.K. AU - Szczepanski, C.J. T1 - The origins of microtexture in duplex Ti alloys JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2009/07/15/ VL - 513-514 M3 - Article SP - 325 EP - 328 SN - 09215093 AB - Abstract: A previously developed methodology was used to transform electron backscatter diffraction (EBSD) data for the primary and secondary alpha phases of Ti–6Al–2Sn–4Zr–6Mo (Ti-6246) to the prior beta phase. The results established that the observed microtexture in duplex alloys is a direct result of the prior beta grain orientations, and variant selection. In addition, for a homogeneous duplex microstructure, all of the secondary alpha phase and the majority of the primary alpha grains retain crystallographic coherency, according to the Burgers relationship, with the surrounding beta phase matrix, which comprise prior beta grains. This investigation establishes that this technique to recover the prior beta grain orientations is applicable to duplex α/β titanium microstructures. The crystallographic coherency of the primary and secondary alpha phase with the prior beta grain coupled with variant selection then leads to the localized microtexture observed in a wide variety of Ti alloys. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Texture KW - TITANIUM alloys KW - ELECTRONS -- Backscattering KW - DIFFRACTIVE scattering KW - MICROSTRUCTURE KW - CRYSTALLOGRAPHY KW - MATERIALS science KW - Burgers relationship KW - EBSD KW - Texture KW - Titanium KW - Variant selection N1 - Accession Number: 38910890; Glavicic, M.G. 1,2,3; Email Address: michael.glavicic@rolls-royce.com Bartha, B.B. 1,4 Jha, S.K. 1,4 Szczepanski, C.J. 1,5; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLM, Wright-Patterson AFB, OH 45433-7817, USA 2: Rolls-Royce Corporation, Indianapolis, IN, USA 3: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 4: UTC Corp., 1270 North Fairfield, Dayton, OH 45432, USA 5: University of Michigan, Materials Science and Engineering, Ann Arbor, MI 48109, USA; Source Info: Jul2009, Vol. 513-514, p325; Subject Term: METALS -- Texture; Subject Term: TITANIUM alloys; Subject Term: ELECTRONS -- Backscattering; Subject Term: DIFFRACTIVE scattering; Subject Term: MICROSTRUCTURE; Subject Term: CRYSTALLOGRAPHY; Subject Term: MATERIALS science; Author-Supplied Keyword: Burgers relationship; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: Texture; Author-Supplied Keyword: Titanium; Author-Supplied Keyword: Variant selection; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.msea.2009.02.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38910890&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mohammad Kurdi AU - Philip Beran T1 - Optimization of dynamic response using a monolithic-time formulation. JO - Structural & Multidisciplinary Optimization JF - Structural & Multidisciplinary Optimization Y1 - 2009/07/15/ VL - 39 IS - 1 M3 - Article SP - 83 EP - 104 SN - 1615147X AB - Abstract  The design of systems for dynamic response may involve constraints that need to be satisfied over an entire time interval or objective functions evaluated over the interval. Efficiently performing the constrained optimization is challenging, since the typical response is implicitly linked to the design variables through a numerical integration of the governing differential equations. Evaluating constraints is costly, as is the determination of sensitivities to variations in the design variables. In this paper, we investigate the application of a temporal spectral element method to the optimization of transient and time-periodic responses of fundamental engineering systems. Through the spectral discretization, the response is computed globally, thereby enabling a more explicit connection between the response and design variables and facilitating the efficient computation of response sensitivities. Furthermore, the response is captured in a higher order manner to increase analysis accuracy. Two applications of the coupling of dynamic response optimization with the temporal spectral element method are demonstrated. The first application, a one-degree-of-freedom, linear, impact absorber, is selected from the auto industry, and tests the ability of the method to treat transient constraints over a large-time interval. The second application, a related mass-spring-damper system, shows how the method can be used to obtain work and amplitude optimal time-periodic control force subject to constraints over a periodic time interval. [ABSTRACT FROM AUTHOR] AB - Copyright of Structural & Multidisciplinary Optimization is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL optimization KW - TIME series analysis KW - CONSTRAINT satisfaction (Artificial intelligence) KW - FUNCTIONS (Mathematics) KW - VARIABLES (Mathematics) KW - ENGINEERING design KW - DIFFERENTIAL equations N1 - Accession Number: 47729092; Mohammad Kurdi 1 Philip Beran 1; Affiliation: 1: Wright-Patterson Air Force Base Air Force Research Laboratory, Air Vehicles Directorate Building 146, 2210 Eighth Street Dayton Ohio 45433 USA; Source Info: Jul2009, Vol. 39 Issue 1, p83; Subject Term: MATHEMATICAL optimization; Subject Term: TIME series analysis; Subject Term: CONSTRAINT satisfaction (Artificial intelligence); Subject Term: FUNCTIONS (Mathematics); Subject Term: VARIABLES (Mathematics); Subject Term: ENGINEERING design; Subject Term: DIFFERENTIAL equations; NAICS/Industry Codes: 541330 Engineering Services; Number of Pages: 22p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=47729092&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gumbs, Godfrey AU - Huang, Danhong T1 - Magnetoquantum transport in a modulated 2D electron gas with spin–orbit interaction JO - Physics Letters A JF - Physics Letters A Y1 - 2009/07/06/ VL - 373 IS - 30 M3 - Article SP - 2506 EP - 2515 SN - 03759601 AB - Abstract: We investigate the effects of spin–orbit interaction (SOI) and plane-perpendicular magnetic field on the conductivity of a two-dimensional electron system in the presence of one-dimensional electrostatic modulation. The calculations are performed when a low-intensity, low-frequency external electric field is applied. The Kubo formula for the conductivity is employed in the calculation. The single-particle eigenstates which depend on the strengths of the magnetic field, the SOI and modulation potential, are calculated and then used to determine the conductivity. We present numerical results for the conductivity along the channels as well as the tunneling conductivity perpendicular to the constrictions as functions of the modulation potential, the SOI and the magnetic field. We demonstrate that the effect of finite frequency is to related to the reduction of both the longitudinal and transverse conductivities. [Copyright &y& Elsevier] AB - Copyright of Physics Letters A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON gas KW - QUANTUM theory KW - TRANSPORT theory (Mathematics) KW - COLLISIONS (Nuclear physics) KW - MAGNETIC fields KW - MODULATION theory KW - ELECTRIC conductivity KW - ELECTRIC fields N1 - Accession Number: 42103915; Gumbs, Godfrey 1 Huang, Danhong 2; Email Address: danhong.huang@kirtland.af.mil; Affiliation: 1: Department of Physics and Astronomy, Hunter College of the City University of New York, 695 Park Avenue, New York, NY 10021, USA 2: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland Air Force Base, NM 87117, USA; Source Info: Jul2009, Vol. 373 Issue 30, p2506; Subject Term: ELECTRON gas; Subject Term: QUANTUM theory; Subject Term: TRANSPORT theory (Mathematics); Subject Term: COLLISIONS (Nuclear physics); Subject Term: MAGNETIC fields; Subject Term: MODULATION theory; Subject Term: ELECTRIC conductivity; Subject Term: ELECTRIC fields; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.physleta.2009.05.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=42103915&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varshney, Vikas AU - Patnaik, Soumya S. AU - Roy, Ajit K. AU - Farmer, Barry L. T1 - Heat transport in epoxy networks: A molecular dynamics study JO - Polymer JF - Polymer Y1 - 2009/07/03/ VL - 50 IS - 14 M3 - Article SP - 3378 EP - 3385 SN - 00323861 AB - Abstract: In this article, thermal behavior of an epoxy based thermoset polymer has been discussed using atomistic molecular dynamics simulations. The simulations were performed on crosslinked network of EPON-862 and curing agent-W (DETDA) using consistent valence force field (CVFF). Thermal conductivity was calculated using both equilibrium as well as non-equilibrium molecular dynamics approaches and the results were found to be in good agreement with experimental findings. Different contributions of heat flux vector towards thermal conductivity and their possible coupling are discussed in terms of various convective and virial contributions. In addition, discussion of power spectra analysis of velocity autocorrelation function for crosslinked network shows a broad distribution of low frequency vibrational modes suggesting distribution of relaxation times. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT flux KW - MOLECULAR dynamics KW - EPOXY compounds KW - SIMULATION methods & models KW - CROSSLINKING (Polymerization) KW - THERMAL conductivity KW - POWER spectra KW - Epoxy network KW - Molecular dynamics KW - Thermal conductivity N1 - Accession Number: 42965151; Varshney, Vikas 1,2; Email Address: vikas.varshney@afmcx.net Patnaik, Soumya S. 1 Roy, Ajit K. 1 Farmer, Barry L. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, Dayton, OH 45433, USA 2: Universal Technology Corporation, Dayton, OH 45432, USA; Source Info: Jul2009, Vol. 50 Issue 14, p3378; Subject Term: HEAT flux; Subject Term: MOLECULAR dynamics; Subject Term: EPOXY compounds; Subject Term: SIMULATION methods & models; Subject Term: CROSSLINKING (Polymerization); Subject Term: THERMAL conductivity; Subject Term: POWER spectra; Author-Supplied Keyword: Epoxy network; Author-Supplied Keyword: Molecular dynamics; Author-Supplied Keyword: Thermal conductivity; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.polymer.2009.05.027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=42965151&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Peltier, Jean-Philippe N. T1 - Interstitial Space: A New, More Realistic Lens. JO - American Foreign Policy Interests JF - American Foreign Policy Interests Y1 - 2009/07// VL - 31 IS - 4 M3 - Article SP - 261 EP - 270 PB - Routledge SN - 10803920 AB - This article argues that we need to move beyond the notion of “failed states” specifically and realize that other actors are actively engaged with such states for influence and control of geographical segments of the population. Because of its state bias, the United States is undermining its long-term security interests by failing to engage with those nonstate actors most likely to influence events in regions of concern. [ABSTRACT FROM AUTHOR] AB - Copyright of American Foreign Policy Interests is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NON-state actors (International relations) KW - INTERNATIONAL relations KW - NATIONAL security KW - GOVERNMENT policy KW - POPULATION KW - UNITED States N1 - Accession Number: 43578136; Peltier, Jean-Philippe N. 1; Affiliation: 1: United States Air Force Special Operations School, Hurlburt Field, Florida; Source Info: Jul2009, Vol. 31 Issue 4, p261; Subject Term: NON-state actors (International relations); Subject Term: INTERNATIONAL relations; Subject Term: NATIONAL security; Subject Term: GOVERNMENT policy; Subject Term: POPULATION; Subject Term: UNITED States; NAICS/Industry Codes: 911410 Foreign affairs; NAICS/Industry Codes: 928120 International Affairs; NAICS/Industry Codes: 928110 National Security; Number of Pages: 10p; Document Type: Article L3 - 10.1080/10803920903136296 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43578136&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gunzelmann, Glenn AU - Gross, Joshua B. AU - Gluck, Kevin A. AU - Dinges, David F. T1 - Sleep Deprivation and Sustained Attention Performance: Integrating Mathematical and Cognitive Modeling. JO - Cognitive Science JF - Cognitive Science Y1 - 2009/07// VL - 33 IS - 5 M3 - Article SP - 880 EP - 910 SN - 03640213 AB - A long history of research has revealed many neurophysiological changes and concomitant behavioral impacts of sleep deprivation, sleep restriction, and circadian rhythms. Little research, however, has been conducted in the area of computational cognitive modeling to understand the information processing mechanisms through which neurobehavioral factors operate to produce degradations in human performance. Our approach to understanding this relationship is to link predictions of overall cognitive functioning, or alertness, from existing biomathematical models to information processing parameters in a cognitive architecture, leveraging the strengths from each to develop a more comprehensive explanation. The integration of these methodologies is used to account for changes in human performance on a sustained attention task across 88 h of total sleep deprivation. The integrated model captures changes due to time awake and circadian rhythms, and it also provides an account for underlying changes in the cognitive processes that give rise to those effects. The results show the potential for developing mechanistic accounts of how fatigue impacts cognition, and they illustrate the increased explanatory power that is possible by combining theoretical insights from multiple methodologies. [ABSTRACT FROM AUTHOR] AB - Copyright of Cognitive Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BEHAVIOR analysts KW - SLEEP deprivation KW - CIRCADIAN rhythms KW - COGNITIVE learning KW - ENERGY dissipation KW - RHYTHM KW - FATIGUE KW - MECHANISM (Philosophy) KW - ACT-R cognitive architecture KW - Alertness KW - Attention KW - Computational model KW - Fatigue KW - Psychomotor vigilance test KW - Sleep deprivation N1 - Accession Number: 51399401; Gunzelmann, Glenn 1; Email Address: glenn.gunzelmann@us.af.mil Gross, Joshua B. 2 Gluck, Kevin A. 1 Dinges, David F. 3; Affiliation: 1: Air Force Research Laboratory, Mesa 2: Pennsylvania State University, University Park 3: University of Pennsylvania School of Medicine, Philadelphia; Source Info: Jul2009, Vol. 33 Issue 5, p880; Subject Term: BEHAVIOR analysts; Subject Term: SLEEP deprivation; Subject Term: CIRCADIAN rhythms; Subject Term: COGNITIVE learning; Subject Term: ENERGY dissipation; Subject Term: RHYTHM; Subject Term: FATIGUE; Subject Term: MECHANISM (Philosophy); Author-Supplied Keyword: ACT-R cognitive architecture; Author-Supplied Keyword: Alertness; Author-Supplied Keyword: Attention; Author-Supplied Keyword: Computational model; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Psychomotor vigilance test; Author-Supplied Keyword: Sleep deprivation; Number of Pages: 31p; Illustrations: 1 Diagram, 5 Charts, 5 Graphs; Document Type: Article L3 - 10.1111/j.1551-6709.2009.01032.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=51399401&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stockman, Emanuel S. AU - Zaidi, Sohail H. AU - Miles, Richard B. AU - Carter, Campbell D. AU - Ryan, Michael D. T1 - Measurements of combustion properties in a microwave enhanced flame JO - Combustion & Flame JF - Combustion & Flame Y1 - 2009/07// VL - 156 IS - 7 M3 - Article SP - 1453 EP - 1461 SN - 00102180 AB - Abstract: Microwave induced flame speed enhancement is quantified in a laminar, premixed CH4/air wall stagnation flat flame. Experiments were performed in a high Q microwave cavity with the cavity tuned so that the maximum microwave field is located in the vicinity of a flat flame front. Equivalence ratios were varied between 0.6 and 0.8. When the flame is radiated by a continuous wave microwave field of approximately 5kV/cm, the flame front is observed to move towards the burner exit and stabilize at a standoff distance corresponding to a flame speed increase of up to 20%. No microwave discharge is observed, indicating that the enhanced flame speed arises from microwave energy deposited directly into the reaction zone through coupling to the weakly ionized gas in that region. Laser diagnostics were performed to quantify temperature increase, the laminar flame speed enhancement, and changes in the OH radical concentration through filtered Rayleigh scattering, particle image velocimetry, and planar laser induced fluorescence, respectively. These measurements indicate that microwave radiation may prove to be an effective means to non-invasively control and enhance flame stability in combustors. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMBUSTION KW - MEASUREMENT KW - MICROWAVES KW - FLAME KW - IONIZED gases KW - STABILITY (Mechanics) KW - ELECTRIC fields KW - LASERS in chemistry KW - RAYLEIGH scattering KW - VELOCIMETRY KW - Electric field KW - Hydrocarbon combustion KW - Microwave KW - OH–PLIF KW - PIV flame speed KW - Plasma assisted combustion KW - Rayleigh temperature N1 - Accession Number: 41243099; Stockman, Emanuel S. 1; Email Address: estockma@princeton.edu Zaidi, Sohail H. 1 Miles, Richard B. 1 Carter, Campbell D. 2 Ryan, Michael D. 3; Affiliation: 1: Engineering Quadrangle – Mechanical and Aerospace Engineering, Olden Street, Princeton University, Princeton, NJ 08544, USA 2: US Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA 3: Universal Technology Corporation, Dayton, OH 45332, USA; Source Info: Jul2009, Vol. 156 Issue 7, p1453; Subject Term: COMBUSTION; Subject Term: MEASUREMENT; Subject Term: MICROWAVES; Subject Term: FLAME; Subject Term: IONIZED gases; Subject Term: STABILITY (Mechanics); Subject Term: ELECTRIC fields; Subject Term: LASERS in chemistry; Subject Term: RAYLEIGH scattering; Subject Term: VELOCIMETRY; Author-Supplied Keyword: Electric field; Author-Supplied Keyword: Hydrocarbon combustion; Author-Supplied Keyword: Microwave; Author-Supplied Keyword: OH–PLIF; Author-Supplied Keyword: PIV flame speed; Author-Supplied Keyword: Plasma assisted combustion; Author-Supplied Keyword: Rayleigh temperature; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.combustflame.2009.02.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=41243099&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Holcomb, Trae AU - Herzinger, Kurt T1 - Unitary Numerical Semigroups and Perfect Bricks. JO - Communications in Algebra JF - Communications in Algebra Y1 - 2009/07// VL - 37 IS - 7 M3 - Article SP - 2496 EP - 2508 SN - 00927872 AB - This article completes a previous investigation of balanced and unitary numerical semigroups. The main result establishes the equivalence of unitary numerical semigroups and perfect 2 × 2 bricks. [ABSTRACT FROM AUTHOR] AB - Copyright of Communications in Algebra is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMIGROUPS (Algebra) KW - NUMERICAL analysis KW - GROUP theory KW - ALGEBRA KW - MATHEMATICS KW - Dual KW - Minimal generating set KW - Numerical semigroup KW - Relative ideal KW - Unitary N1 - Accession Number: 42533160; Holcomb, Trae 1 Herzinger, Kurt 1; Email Address: kurt.herzinger@usafa.edu; Affiliation: 1: Department of Mathematical Sciences, United States Air Force Academy, Colorado, USA.; Source Info: Jul2009, Vol. 37 Issue 7, p2496; Subject Term: SEMIGROUPS (Algebra); Subject Term: NUMERICAL analysis; Subject Term: GROUP theory; Subject Term: ALGEBRA; Subject Term: MATHEMATICS; Author-Supplied Keyword: Dual; Author-Supplied Keyword: Minimal generating set; Author-Supplied Keyword: Numerical semigroup; Author-Supplied Keyword: Relative ideal; Author-Supplied Keyword: Unitary; Number of Pages: 13p; Document Type: Article L3 - 10.1080/00927870802174165 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=42533160&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Drummond, Jack AU - Christou, Julian AU - Nelson, Jerry T1 - Triaxial ellipsoid dimensions and poles of asteroids from AO observations at the Keck-II telescope JO - ICARUS JF - ICARUS Y1 - 2009/07// VL - 202 IS - 1 M3 - Article SP - 147 EP - 159 SN - 00191035 AB - Abstract: Five main belt asteroids, 2 Pallas, 129 Antigone, 409 Aspasia, 532 Herculina, and 704 Interamnia were imaged with the adaptive optics system on the 10 m Keck-II telescope in the near infrared on one night, August 16, 2006. The three axis dimensions and rotational poles were determined for Pallas, Antigone, Aspasia, and Interamnia, from their changing apparent sizes and shapes as measured with parametric blind deconvolution. The rotational pole found for Interamnia is much different from all previous work, including our own at Lick Observatory the previous month. Although images of Herculina were obtained at only two rotational phases, its rotation appears to be opposite to that predicted from the lightcurve inversion model of M. Kaasalainen, J. Torppa, and J. Piironen [2002. Icarus 159, 369–395]. A search for satellites was made in all of the asteroid images, with negative results, but three trailing stars around Herculina (200 km diameter), down to 8.9 magnitudes fainter and between 1 and 115 asteroid radii (100 to 11,500 km) from the asteroid, establishes an upper limit of 3.3 km for any object with the same albedo near Herculina. [Copyright &y& Elsevier] AB - Copyright of ICARUS is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASTEROIDS KW - TELESCOPES KW - ASTRONOMICAL observations KW - ALBEDO KW - ADAPTIVE optics KW - LIGHT curves KW - MATHEMATICAL models KW - PALLAS (Asteroid) KW - Adaptive optics KW - Asteroids N1 - Accession Number: 41588529; Drummond, Jack 1 Christou, Julian 2 Nelson, Jerry 2; Affiliation: 1: Starfire Optical Range, Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117-5776, United States 2: University of California Observatories, Center for Adaptive Optics, University of California, Santa Cruz, CA 95064-1077, United States; Source Info: Jul2009, Vol. 202 Issue 1, p147; Subject Term: ASTEROIDS; Subject Term: TELESCOPES; Subject Term: ASTRONOMICAL observations; Subject Term: ALBEDO; Subject Term: ADAPTIVE optics; Subject Term: LIGHT curves; Subject Term: MATHEMATICAL models; Subject Term: PALLAS (Asteroid); Author-Supplied Keyword: Adaptive optics; Author-Supplied Keyword: Asteroids; NAICS/Industry Codes: 453999 All other miscellaneous store retailers (except beer and wine-making supplies stores); NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.icarus.2009.02.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=41588529&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - West, James C. AU - Steyskal, Hans T1 - Analysis and Feeding of a Spiral Element Used in a Planar Array. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2009/07// VL - 57 IS - 7 M3 - Article SP - 1931 EP - 1935 SN - 0018926X AB - The operation of a previously introduced planar array consisting of square spiral radiating elements has been analyzed by both numerical simulation and a transmission line model. The numerical results show that previously unexplained narrow resonances in the active impedance of the spiral elements result from standing waves excited on the elements through coupling from other elements. The transmission line analysis confirms that the standing waves can only be established when the spiral arm lengths are simultaneously multiples of one half the operating wavelength. The standing wave is excited only by asymmetric coupling, so the resonances are strongly established only for off-broadside scan. A method to feed the unbalanced load presented by an asymmetric spiral that is immune to the narrow resonances is proposed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPIRAL antennas KW - PHASED array antennas KW - ELECTRIC lines KW - RESONANCE KW - WAVELENGTHS KW - Broadband arrays KW - phased arrays KW - spiral antennas N1 - Accession Number: 43426400; West, James C. 1; Email Address: jim.west@okstate.edu Steyskal, Hans 2; Email Address: hans.steyskal.ctr@hanscom.af.mil; Affiliation: 1: School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, OK 74078 USA 2: Air Force Research Laboratory (AFRL), Hanscom AFB, MA 01731 USA; Source Info: Jul2009, Vol. 57 Issue 7, p1931; Subject Term: SPIRAL antennas; Subject Term: PHASED array antennas; Subject Term: ELECTRIC lines; Subject Term: RESONANCE; Subject Term: WAVELENGTHS; Author-Supplied Keyword: Broadband arrays; Author-Supplied Keyword: phased arrays; Author-Supplied Keyword: spiral antennas; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238910 Site Preparation Contractors; Number of Pages: 5p; Illustrations: 1 Black and White Photograph, 7 Graphs; Document Type: Article L3 - 10.1109/TAP.2009.2021912 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43426400&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lambrecht, M. R. AU - Cartwright, K L. AU - Baum, Carl E. AU - Schamiloglu, E. T1 - Electromagnetic Modeling of Hot-Wire Detonators. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques Y1 - 2009/07// VL - 57 IS - 7 M3 - Article SP - 1707 EP - 1713 SN - 00189480 AB - An effort is underway to determine the electromagnetic (EM) characteristics of hot-wire detonators in order to quantify more precisely how they might respond to modern EM illumination. These analyses provide a precise tailored approach to EM safety and insights into IEEE Standard C95.7-2005. The analyses include a comprehensive investigation of physical detonator characteristics, which is then used to model detonators using EM theory. The theoretical analysis treats the detonator as a cascaded transmission line incorporating several different dielectric regions, and examines both differential and common mode excitation for a generic detonator geometry. This model is then implemented in MATLAB and is used to calculate the input impedance for the detonator from dc to 9 GHz. This program can then be used to quickly investigate similarly constructed hot-wire detonators by simply varying the input parameters. The model is used to predict the input impedance for a state-of-the-art blasting cap, and these predictions are then compared with experimental measurements. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC devices KW - ELECTRIC detonators KW - ETHERNET (Local area network system) KW - WIRELESS LANs -- Standards KW - ELECTRIC lines KW - Detonator KW - electro-explosive device (EED) KW - modeling KW - transmission line N1 - Accession Number: 43465111; Lambrecht, M. R. 1 Cartwright, K L. 2 Baum, Carl E. 1 Schamiloglu, E. 1; Affiliation: 1: Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM 87131 USA 2: Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87106 USA; Source Info: Jul2009, Vol. 57 Issue 7, p1707; Subject Term: ELECTROMAGNETIC devices; Subject Term: ELECTRIC detonators; Subject Term: ETHERNET (Local area network system); Subject Term: WIRELESS LANs -- Standards; Subject Term: ELECTRIC lines; Author-Supplied Keyword: Detonator; Author-Supplied Keyword: electro-explosive device (EED); Author-Supplied Keyword: modeling; Author-Supplied Keyword: transmission line; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238910 Site Preparation Contractors; Number of Pages: 7p; Illustrations: 4 Black and White Photographs, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1109/TMTT.2009.2022811 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43465111&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - John S. Wilkes AU - Patrick J. Castle AU - Joseph A. Levisky AU - Adrian Hermosillo AU - Paul J. Côté AU - Cynthia A. Corley AU - Emily A. Montgomery AU - Donald M. Bird AU - Ralph R. Hutchinson AU - Matthew F. Ditson T1 - Reactions of Chemical Warfare Agent Simulants in the Common Ion Binary Ionic Liquid 1,2-Dimethyl-3-propylimidazolium/Copper(II) Bis(trifluoromethylsulfonyl)amide. JO - Industrial & Engineering Chemistry Research JF - Industrial & Engineering Chemistry Research Y1 - 2009/07// VL - 48 IS - 13 M3 - Article SP - 6203 EP - 6211 SN - 08885885 AB - Ionic liquids have the potential for being ideal alternatives for organic solvents in chemical warfare agent reactions and demilitarization processes. They are considered to be an excellent substitute, because of their extraordinarily wide liquid range, low melting points, chemical and thermal stability, high conductivity, and nonvolatility. In addition, many have excellent hydrophobic properties and immiscibility with water and offer the opportunity to isolate the chemical agents and reaction products from the environment. In this report, we describe a two-step process in which chemical warfare simulants are reacted with hydrogen peroxide (H2O2) followed by basic methanol in a common ion binary ionic liquid that consists of 1,2-dimethyl-3-propylimidazolium bis(trifluoromethylsulfonyl)amide and copper(II) bis(trifluoromethylsulfonyl)amide. The chemical agent simulants used in this study are diisopropylfluorophosphate, bis(2-ethylhexyl) phosphite, and 2-chloroethylphenyl sulfide, which simulate agents GB, VX, and HD, respectively. Initially, H2O2is added to the mixture of simulants and ionic liquid to remove 2-chloroethylphenyl sulfide, followed by the addition of methanolic tetramethylammonium hydroxide hydrate (TMAOH·5H2O) (basic methanol) to eliminate diisopropylfluorophosphate and bis(2-ethylhexyl) phosphite. The reactions were monitored by liquid chromatography/mass spectroscopy time-of-flight (LC/MS-TOF), coupled with ultraviolet (UV) diode array detection. Gas chromatography/mass spectroscopy (GC/MS) was used to aid in product identification. [ABSTRACT FROM AUTHOR] AB - Copyright of Industrial & Engineering Chemistry Research is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL warfare agents KW - CHEMICAL reactions KW - IONIC liquids KW - CATALYSTS KW - CHEMICAL processes KW - GAS chromatography/Mass spectrometry (GC-MS) KW - MISCIBILITY KW - HYDROGEN peroxide KW - LIQUID chromatography N1 - Accession Number: 42425335; John S. Wilkes 1 Patrick J. Castle 1 Joseph A. Levisky 1 Adrian Hermosillo 1 Paul J. Côté 1 Cynthia A. Corley 1 Emily A. Montgomery 1 Donald M. Bird 1 Ralph R. Hutchinson 1 Matthew F. Ditson 1; Affiliation: 1: Department of Chemistry, United States Air Force Academy, 2355 Fairchild Drive, Suite 2N225, USAF Academy, Colorado 80840; Source Info: Jul2009, Vol. 48 Issue 13, p6203; Subject Term: CHEMICAL warfare agents; Subject Term: CHEMICAL reactions; Subject Term: IONIC liquids; Subject Term: CATALYSTS; Subject Term: CHEMICAL processes; Subject Term: GAS chromatography/Mass spectrometry (GC-MS); Subject Term: MISCIBILITY; Subject Term: HYDROGEN peroxide; Subject Term: LIQUID chromatography; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=42425335&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiao, C. Q. AU - Adams, S. F. AU - Garscadden, A. T1 - Ionization of 2,5-dimethylfuran by electron impact and resulting ion-parent molecule reactions. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2009/07// VL - 106 IS - 1 M3 - Article SP - 13306 EP - 13310 PB - American Institute of Physics SN - 00218979 AB - 2,5-dimethylfuran (C6H8O) is an important fuel additive and a possible renewable liquid fuel for the future. This paper presents a recent Fourier transfer mass spectrometry study on the formation of ions from C6H8O by electron impact ionization and by ion-molecule reactions. Cross sections of the partial electron impact ionization have been measured and the pathways of major fragmentation channels of the parent ion have been examined. The kinetics of the reactions of C6H8O with selected product ions from electron impact and Ar+ have been studied. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONIZATION (Atomic physics) KW - ELECTRON impact ionization KW - IONS KW - MASS spectrometry KW - CROSS sections (Nuclear physics) N1 - Accession Number: 43211924; Jiao, C. Q. 1 Adams, S. F. 2 Garscadden, A. 2; Affiliation: 1: UES, Dayton, Ohio 45440-3638, 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7251,; Source Info: Jul2009, Vol. 106 Issue 1, p13306; Subject Term: IONIZATION (Atomic physics); Subject Term: ELECTRON impact ionization; Subject Term: IONS; Subject Term: MASS spectrometry; Subject Term: CROSS sections (Nuclear physics); Number of Pages: 4p; Illustrations: 1 Diagram, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.3159009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43211924&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Scharf, T. W. AU - Neira, A. AU - Hwang, J. Y. AU - Tiley, J. AU - Banerjee, R. T1 - Self-lubricating carbon nanotube reinforced nickel matrix composites. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2009/07// VL - 106 IS - 1 M3 - Article SP - 13508 EP - 13515 PB - American Institute of Physics SN - 00218979 AB - Nickel (Ni)—multiwalled carbon nanotube (CNT) composites have been processed in a monolithic form using the laser-engineered net shape (LENS™) processing technique. Auger electron spectroscopy maps determined that the nanotubes were well dispersed and bonded in the nickel matrix and no interfacial chemical reaction products were determined in the as-synthesized composites. Mechanisms of solid lubrication have been investigated by micro-Raman spectroscopy spatial mapping of the worn surfaces to determine the formation of tribochemical products. The Ni-CNT composites exhibit a self-lubricating behavior, forming an in situ, low interfacial shear strength graphitic film during sliding, resulting in a decrease in friction coefficient compared to pure Ni. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - NICKEL KW - RAMAN spectroscopy KW - ELECTRON spectroscopy KW - CHEMICAL reactions N1 - Accession Number: 43211981; Scharf, T. W. 1 Neira, A. 1 Hwang, J. Y. 1 Tiley, J. 2 Banerjee, R. 1; Affiliation: 1: Department of Materials Science and Engineering and Center for Advanced Research and Technology, University of North Texas, Denton, Texas 76203-5017, 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Dayton, Ohio 45309,; Source Info: Jul2009, Vol. 106 Issue 1, p13508; Subject Term: CARBON nanotubes; Subject Term: NICKEL; Subject Term: RAMAN spectroscopy; Subject Term: ELECTRON spectroscopy; Subject Term: CHEMICAL reactions; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 7p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.3158360 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43211981&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buchanan, Dennis J. AU - John, Reji AU - Brockman, Robert A. T1 - Relaxation of Shot-Peened Residual Stresses Under Creep Loading. JO - Journal of Engineering Materials & Technology JF - Journal of Engineering Materials & Technology Y1 - 2009/07// VL - 131 IS - 3 M3 - Article SP - 0310081 EP - 03100810 SN - 00944289 AB - Shot peening is a commonly used surface treatment process that imparts compressive residual stresses into the surface of metal components. Compressive residual stresses retard initiation and growth of fatigue cracks. During the component loading history, the shot-peened residual stresses may change due to thermal exposure, creep, and cyclic loading. This paper describes a methodical approach for characterizing and modeling residual stress relaxation under elevated temperature loading, near and above the monotonic yield strength of nickel-base superalloy IN/OO. The model incorporates the dominant creep deformation mechanism, coupling between the creep and plasticity models, and effects of prior plastic strain. The initial room temperature residual stress and plastic strain profiles provide the initial conditions for relaxation predictions using the coupled creep-plasticity model. Mode! predictions correlate well with experimental results on shot-peened dogbone specimens subject to single cycle and creep loading conditions at elevated temperature. The predictions accurately capture both the shape and magnitude of the retained residual stress profile. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering Materials & Technology is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESIDUAL stresses KW - SHOT peening KW - METALLIC surfaces KW - MATERIALS -- Compression testing KW - METALS -- Creep KW - NICKEL alloys KW - STRESS relaxation tests KW - DEFORMATIONS (Mechanics) KW - creep rate KW - nickel-base superalloy KW - residual stress KW - shot peen N1 - Accession Number: 43441925; Buchanan, Dennis J. 1 John, Reji 2 Brockman, Robert A. 1; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469-0020 2: Materials and ManufacturingDirectorate, Air Force Research Laboratory (AFRLJRXLMN), Wright-Patterson Air Force Base, OH 45433-7817; Source Info: Jul2009, Vol. 131 Issue 3, p0310081; Subject Term: RESIDUAL stresses; Subject Term: SHOT peening; Subject Term: METALLIC surfaces; Subject Term: MATERIALS -- Compression testing; Subject Term: METALS -- Creep; Subject Term: NICKEL alloys; Subject Term: STRESS relaxation tests; Subject Term: DEFORMATIONS (Mechanics); Author-Supplied Keyword: creep rate; Author-Supplied Keyword: nickel-base superalloy; Author-Supplied Keyword: residual stress; Author-Supplied Keyword: shot peen; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; Number of Pages: 10p; Illustrations: 1 Chart, 13 Graphs; Document Type: Article L3 - 10.1115/1.3120393 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43441925&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fontanari, José F. AU - Tikhanoff, Vadim AU - Cangelosi, Angelo AU - Ilin, Roman AU - Perlovsky, Leonid I. T1 - Cross-situational learning of object–word mapping using Neural Modeling Fields JO - Neural Networks JF - Neural Networks Y1 - 2009/07// VL - 22 IS - 5/6 M3 - Article SP - 579 EP - 585 SN - 08936080 AB - Abstract: The issue of how children learn the meaning of words is fundamental to developmental psychology. The recent attempts to develop or evolve efficient communication protocols among interacting robots or virtual agents have brought that issue to a central place in more applied research fields, such as computational linguistics and neural networks, as well. An attractive approach to learning an object–word mapping is the so-called cross-situational learning. This learning scenario is based on the intuitive notion that a learner can determine the meaning of a word by finding something in common across all observed uses of that word. Here we show how the deterministic Neural Modeling Fields (NMF) categorization mechanism can be used by the learner as an efficient algorithm to infer the correct object–word mapping. To achieve that we first reduce the original on-line learning problem to a batch learning problem where the inputs to the NMF mechanism are all possible object–word associations that could be inferred from the cross-situational learning scenario. Since many of those associations are incorrect, they are considered as clutter or noise and discarded automatically by a clutter detector model included in our NMF implementation. With these two key ingredients–batch learning and clutter detection–the NMF mechanism was capable to infer perfectly the correct object–word mapping. [Copyright &y& Elsevier] AB - Copyright of Neural Networks is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MACHINE learning KW - COMPUTATIONAL linguistics KW - MAPPINGS (Mathematics) KW - NEURAL networks (Computer science) KW - ALGORITHMS KW - DEVELOPMENTAL psychology KW - CHILD psychology KW - MATHEMATICAL models KW - COMPUTER science -- Mathematics KW - Clustering algorithms KW - Cross-situational learning KW - Language acquisition KW - Neural Modeling Fields N1 - Accession Number: 43652288; Fontanari, José F. 1; Email Address: fontanari@ifsc.usp.br Tikhanoff, Vadim 2; Email Address: vadim.tikhanoff@plymouth.ac.uk Cangelosi, Angelo 2; Email Address: a.cangelosi@plymouth.ac.uk Ilin, Roman 3; Email Address: roman.ilin.ctr@hanscom.af.mil Perlovsky, Leonid I. 3,4; Email Address: Leonid.Perlovsky@hanscom.af.mil; Affiliation: 1: Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos, SP, Brazil 2: Adaptive Behaviour & Cognition Research Group, University of Plymouth, Plymouth PL4 8AA, UK 3: Air Force Research Laboratory, 80 Scott Drive, Hanscom Air Force Base, MA 01731, United States 4: Harvard University, 33 Oxford Street, Rm 336, Cambridge MA 02138, United States; Source Info: Jul2009, Vol. 22 Issue 5/6, p579; Subject Term: MACHINE learning; Subject Term: COMPUTATIONAL linguistics; Subject Term: MAPPINGS (Mathematics); Subject Term: NEURAL networks (Computer science); Subject Term: ALGORITHMS; Subject Term: DEVELOPMENTAL psychology; Subject Term: CHILD psychology; Subject Term: MATHEMATICAL models; Subject Term: COMPUTER science -- Mathematics; Author-Supplied Keyword: Clustering algorithms; Author-Supplied Keyword: Cross-situational learning; Author-Supplied Keyword: Language acquisition; Author-Supplied Keyword: Neural Modeling Fields; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.neunet.2009.06.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43652288&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shobeiri, S. Abbas AU - LeClaire, Edgar AU - Nihira, Mikio A. AU - Quiroz, Lieschen H. AU - O'Donoghue, Daniel T1 - Appearance of the Levator Ani Muscle Subdivisions in Endovaginal Three-Dimensional Ultrasonography. JO - Obstetrics & Gynecology JF - Obstetrics & Gynecology Y1 - 2009/07// VL - 114 IS - 1 M3 - Article SP - 66 EP - 72 SN - 00297844 AB - The article presents a study which affirms the use of three-dimensional endovaginal ultrasonography for the evaluation of the pelvic floor muscles. The ultrasound examination was performed on five fresh-frozen female pelves. The results indicated the reliability of the three-dimensional endovaginal ultrasonography to visualize subdivisions of the levator ani muscle using a systematic approach. KW - ULTRASONIC imaging KW - THREE-dimensional imaging in medicine KW - PELVIC floor KW - PELVIS KW - DIAGNOSTIC imaging KW - OBSTETRICS -- Research N1 - Accession Number: 43449348; Shobeiri, S. Abbas 1; Email Address: Abbas-Shobeiri@ouhsc.edu LeClaire, Edgar 1 Nihira, Mikio A. 1 Quiroz, Lieschen H. 1 O'Donoghue, Daniel 1; Affiliation: 1: University of Oklahoma Health Sciences Center and the United States Air Force, Department of Obstetrics and Gynecology, Oklahoma City, Oklahoma; Source Info: Jul2009, Vol. 114 Issue 1, p66; Subject Term: ULTRASONIC imaging; Subject Term: THREE-dimensional imaging in medicine; Subject Term: PELVIC floor; Subject Term: PELVIS; Subject Term: DIAGNOSTIC imaging; Subject Term: OBSTETRICS -- Research; NAICS/Industry Codes: 621512 Diagnostic Imaging Centers; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 7p; Illustrations: 5 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43449348&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Khramov, A.N. AU - Johnson, J.A. T1 - Phosphonate-functionalized ORMOSIL coatings for magnesium alloys JO - Progress in Organic Coatings JF - Progress in Organic Coatings Y1 - 2009/07// VL - 65 IS - 3 M3 - Article SP - 381 EP - 385 SN - 03009440 AB - Abstract: Hybrid organically modified silicates, or ORMOSIL materials, with covalently attached pendant phosphonate groups were processed by a sol–gel method. A hydrolysis and condensation route was used involving a phosphonato-silane and resultant films were evaluated as prospective coatings for magnesium AZ31B alloy substrates. The inclusion of phosphonate functionalities into the coating matrix was achieved by a co-condensation of the phosphonato-silane with other organo-functional silanes followed by blending the resultant phosphonate-functionalized silicate oligomers with another sol–gel matrix material to form an interpenetrating network structure. The effect of synthesis composition on the hydrophobic/hydrophilic balance and film barrier properties was examined by several methods, including constant immersion and electrochemical tests. The observed enhancement in corrosion protection properties was attributed to a combination of the barrier properties of the organo-silicate matrix along with strengthening of the coating/substrate interface due to chemical bonding of the phosphonate groups to the metal surface. [Copyright &y& Elsevier] AB - Copyright of Progress in Organic Coatings is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICATES KW - PHOSPHONATES KW - MAGNESIUM alloys KW - SUBSTRATES (Materials science) KW - Coating KW - Corrosion KW - Interpenetrating network KW - Magnesium KW - ORMOSIL KW - Phosphonate KW - Sol–gel N1 - Accession Number: 40113561; Khramov, A.N. 1; Email Address: alexander.khramov@wpafb.af.mil Johnson, J.A. 2; Affiliation: 1: Universal Technology Corporation, 1270 N. Fairfield Rd., Dayton, OH 45432-2600, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Jul2009, Vol. 65 Issue 3, p381; Subject Term: SILICATES; Subject Term: PHOSPHONATES; Subject Term: MAGNESIUM alloys; Subject Term: SUBSTRATES (Materials science); Author-Supplied Keyword: Coating; Author-Supplied Keyword: Corrosion; Author-Supplied Keyword: Interpenetrating network; Author-Supplied Keyword: Magnesium; Author-Supplied Keyword: ORMOSIL; Author-Supplied Keyword: Phosphonate; Author-Supplied Keyword: Sol–gel; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.porgcoat.2009.03.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=40113561&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hwang, J.Y. AU - Nag, S. AU - Singh, A.R.P. AU - Srinivasan, R. AU - Tiley, J. AU - Fraser, H.L. AU - Banerjee, R. T1 - Evolution of the γ/γ′ interface width in a commercial nickel base superalloy studied by three-dimensional atom probe tomography JO - Scripta Materialia JF - Scripta Materialia Y1 - 2009/07// VL - 61 IS - 1 M3 - Article SP - 92 EP - 95 SN - 13596462 AB - The compositional width of the γ/γ′ interface in a commercial nickel base superalloy has been determined using three-dimensional atom probe tomography. Initially, on formation during continuous cooling, the primary γ′ precipitates exhibit a sharp interface while the secondary γ′ precipitates exhibit a substantially diffuse interface. On subsequent isothermal aging, the interface width increases for the primary γ′ precipitates while it decreases for the secondary γ′ precipitates, reaching a near-equilibrium width for both types of interfaces after prolonged aging. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERFACES (Physical sciences) KW - NICKEL alloys KW - HEAT resistant alloys KW - THREE-dimensional imaging KW - COOLING KW - TOMOGRAPHY KW - CHEMICAL equilibrium KW - PRECIPITATION (Chemistry) KW - Interfaces KW - Nickel superalloy KW - Three-dimensional atom probe (3DAP) N1 - Accession Number: 38324467; Hwang, J.Y. 1 Nag, S. 1 Singh, A.R.P. 1 Srinivasan, R. 2 Tiley, J. 3 Fraser, H.L. 2 Banerjee, R. 1; Email Address: banerjee@unt.edu; Affiliation: 1: Center for Advanced Research and Technology, Department of Materials Science and Engineering, University of North Texas, P.O. Box 305310, Denton, TX 76203-5310, USA 2: Center for the Accelerated Maturation of Materials, Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH, USA; Source Info: Jul2009, Vol. 61 Issue 1, p92; Subject Term: INTERFACES (Physical sciences); Subject Term: NICKEL alloys; Subject Term: HEAT resistant alloys; Subject Term: THREE-dimensional imaging; Subject Term: COOLING; Subject Term: TOMOGRAPHY; Subject Term: CHEMICAL equilibrium; Subject Term: PRECIPITATION (Chemistry); Author-Supplied Keyword: Interfaces; Author-Supplied Keyword: Nickel superalloy; Author-Supplied Keyword: Three-dimensional atom probe (3DAP); NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2009.03.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38324467&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Troe, Jürgen AU - Miller, Thomas M. AU - Viggiano, Albert A. T1 - On the accuracy of thermionic electron emission models. I. Electron detachment from SF6-. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2009/06/28/ VL - 130 IS - 24 M3 - Article SP - 244303 PB - American Institute of Physics SN - 00219606 AB - Detailed statistical rate calculations combined with electron capture theory and kinetic modeling for the electron attachment to SF6 and detachment from SF6- [Troe et al., J. Chem. Phys. 127, 244303 (2007)] are used to test thermionic electron emission models. A new method to calculate the specific detachment rate constants kdet(E) and the electron energy distributions f(E,[variant_greek_epsilon]) as functions of the total energy E of the anion and the energy [variant_greek_epsilon] of the emitted electrons is presented, which is computationally simple but neglects fine structures in the detailed kdet(E). Reduced electron energy distributions f(E,[variant_greek_epsilon]/≤[variant_greek_epsilon]>) were found to be of the form ([variant_greek_epsilon]/≤[variant_greek_epsilon]>)n exp(-[variant_greek_epsilon]/≤[variant_greek_epsilon]>) with n≈0.15, whose shape corresponds to thermal distributions only to a limited extent. In contrast, the average energies ≤[variant_greek_epsilon](E)> can be roughly estimated within thermionic emission and finite heat bath concepts. An effective temperature Td(E) is determined from the relation E-EA=≤ESF6(Td)≥+kTd, where denotes the thermal internal energy of the detachment product SF6 at the temperature Td and EA is the electron affinity of SF6. The average electron energy is then approximately given by ≥[variant_greek_epsilon](E)>=kTd(E), but dynamical details of the process are not accounted for by this approach. Simplified representations of kdet(E) in terms of Td(E) from the literature are shown to lead to only semiquantitative agreement with the equally simple but more accurate calculations presented here. An effective “isokinetic” electron emission temperature Te(E) does not appear to be useful for the electron detachment system considered because it neither provides advantages over a representation of kdet(E) as a function of Td(E), nor are recommended relations between Te(E) and Td(E) of sufficient accuracy. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMIONIC emission KW - THERMAL electrons KW - ELECTRON work function KW - DIRECT energy conversion KW - PARTICLES (Nuclear physics) KW - CATHODE rays N1 - Accession Number: 42961181; Troe, Jürgen 1,2; Email Address: shoff@gwdg.de Miller, Thomas M. 3 Viggiano, Albert A. 3; Affiliation: 1: Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany 2: Max-Planck-Institut für Biophysikalische Chemie, D-37077 Göttingen, Germany 3: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Bedford, Massachusetts 01731-3010, USA; Source Info: 6/28/2009, Vol. 130 Issue 24, p244303; Subject Term: THERMIONIC emission; Subject Term: THERMAL electrons; Subject Term: ELECTRON work function; Subject Term: DIRECT energy conversion; Subject Term: PARTICLES (Nuclear physics); Subject Term: CATHODE rays; Number of Pages: 12p; Illustrations: 7 Graphs; Document Type: Article L3 - 10.1063/1.3149782 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=42961181&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fajardo, Mario E. AU - Lindsay, C. Michael AU - Momose, Takamasa T1 - Crystal field theory analysis of rovibrational spectra of carbon monoxide monomers isolated in solid parahydrogen. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2009/06/28/ VL - 130 IS - 24 M3 - Article SP - 244508 PB - American Institute of Physics SN - 00219606 AB - We report the first rotationally resolved and completely assigned rovibrational spectrum for a nonhydride molecule rotating in the solid phase: carbon monoxide (CO) monomers isolated in cryogenic solid parahydrogen (p-H2). We employ a modified crystal field theory model, in which the CO molecular spectroscopic constants are taken as adjustable parameters, to make good spectroscopic assignments for all the observed features. We discuss the limitations of this approach and highlight the need for improved theoretical models of molecular rotation dynamics in quantum solids. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL field theory KW - SOLID state physics KW - SPECTRUM analysis KW - MOLECULAR dynamics KW - CARBON monoxide KW - MONOMERS N1 - Accession Number: 42961134; Fajardo, Mario E. 1; Email Address: mario.fajardo@eglin.af.mil Lindsay, C. Michael 1 Momose, Takamasa 2; Affiliation: 1: Munitions Directorate, U.S. Air Force Research Laboratory, AFRL/RWME, 2306 Perimeter Road, Eglin AFB, Florida 32542-5910, USA 2: Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada; Source Info: 6/28/2009, Vol. 130 Issue 24, p244508; Subject Term: CRYSTAL field theory; Subject Term: SOLID state physics; Subject Term: SPECTRUM analysis; Subject Term: MOLECULAR dynamics; Subject Term: CARBON monoxide; Subject Term: MONOMERS; Number of Pages: 10p; Illustrations: 1 Diagram, 4 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.3158947 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=42961134&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Scott A. Shackelford AU - John L. Belletire AU - Jerry A. Boatz AU - Stefan Schneider AU - Amanda K. Wheaton AU - Brett A. Wight AU - Leslie M. Hudgens AU - Herman L. Ammon AU - Steven H. Strauss T1 - Pairing Heterocyclic Cations with closo-Icosahedral Borane and Carborane Anions. I. Benchtop Aqueous Synthesis of Binary Triazolium and Imidazolium Salts with Limited Water Solubility. JO - Organic Letters JF - Organic Letters Y1 - 2009/06/18/ VL - 11 IS - 12 M3 - Article SP - 2623 EP - 2626 SN - 15237060 AB - Ten new salts that pair triazolium and imidazolium cations with closo-icosahedral anions [B12H12]2−and [CB11H12]−were synthesized in water solvent using an open-air, benchtop method. These unreported [Heterocyclium]2[B12H12] and [Heterocyclium][CB11H12] salts extend reports of [Imidazolium][CB11H12] and [Pyridinium][CB11H12] salts that were synthesized in anhydrous organic solvents under an inert atmosphere with glovebox or Schlenk techniques. Spectroscopic data, melting points, and densities are reported for each salt. Single-crystal X-ray structures are provided for the five new [B12H12]2−salts. [ABSTRACT FROM AUTHOR] AB - Copyright of Organic Letters is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANIC synthesis (Chemistry) KW - SALTS KW - HETEROCYCLIC compounds KW - BORANES KW - CARBORANES KW - ANIONS KW - CATIONS KW - ORGANIC chemistry N1 - Accession Number: 41436428; Scott A. Shackelford 1 John L. Belletire 1 Jerry A. Boatz 1 Stefan Schneider 1 Amanda K. Wheaton 1 Brett A. Wight 1 Leslie M. Hudgens 1 Herman L. Ammon 1 Steven H. Strauss 1; Affiliation: 1: Air Force Research Laboratory, Propellants Branch (AFRL/RZSP), 10 East Saturn Boulevard, Edwards AFB, California 93524-7680, Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, and Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523; Source Info: Jun2009, Vol. 11 Issue 12, p2623; Subject Term: ORGANIC synthesis (Chemistry); Subject Term: SALTS; Subject Term: HETEROCYCLIC compounds; Subject Term: BORANES; Subject Term: CARBORANES; Subject Term: ANIONS; Subject Term: CATIONS; Subject Term: ORGANIC chemistry; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=41436428&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ongstad, Andrew P. AU - Kaspi, Ron AU - Tauke-Pedretti, Anna AU - Chavez, Joseph C. AU - Tilton, Michael L. AU - Dente, Gregory C. T1 - Controlling the outcoupled power in a dual wavelength optically pumped semiconductor laser. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2009/06/15/ VL - 94 IS - 24 M3 - Article SP - 241111 PB - American Institute of Physics SN - 00036951 AB - We present a study of a dual wavelength optically pumped midinfrared semiconductor laser. In order to control the outcoupled power of each wavelength, the modal overlap between the adjacent gain regions was minimized while the pump absorbance for each gain region was balanced. The nominal power expectation, based solely on the absorbed power per gain region, was observed to be generally in good agreement with measurement. Improved power accounting can be accomplished if the waveguide loss and internal efficiency at each operational wavelength is known. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVEGUIDES KW - SEMICONDUCTOR lasers KW - ELECTROMAGNETIC waves KW - DIRECTIONAL couplers KW - WAVELENGTHS N1 - Accession Number: 42223757; Ongstad, Andrew P. 1; Email Address: andrew.ongstad@kirtland.af.mil Kaspi, Ron 1 Tauke-Pedretti, Anna 1,2 Chavez, Joseph C. 3 Tilton, Michael L. 3 Dente, Gregory C. 4; Affiliation: 1: Air Force Research Laboratory Directed Energy Directorate, Kirtland AFB, Albuquerque, New Mexico 87117, USA 2: Sandia National Laboratory, Albuquerque, NM 3: Boeing Defense and Space Group, Albuquerque, New Mexico 87106, USA 4: GCD Associates, Albuquerque, New Mexico 87110, USA; Source Info: 6/15/2009, Vol. 94 Issue 24, p241111; Subject Term: WAVEGUIDES; Subject Term: SEMICONDUCTOR lasers; Subject Term: ELECTROMAGNETIC waves; Subject Term: DIRECTIONAL couplers; Subject Term: WAVELENGTHS; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.3155427 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=42223757&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, M. Q. AU - Turgut, Z. AU - Chen, Z. M. AU - Shen, Y. H. AU - Lee, D. AU - Higgins, A. AU - Chen, C. H. AU - Liu, S. AU - Liu, J. F. AU - Horwath, J. C. AU - Fingers, R. T. T1 - Coercivity of bulk anisotropic nanocomposite Sm(CoFeTi)8–10 magnets. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2009/06/15/ VL - 105 IS - 12 M3 - Article SP - 123915-1 EP - 123915-5 PB - American Institute of Physics SN - 00218979 AB - The present study investigates the effects of nonmagnetic metal additions on Sm(CobalFe0.2Ti0.05MxB0.01)z (x=0–0.04 and z=8–10) based melt-spun alloys. M=Nb, Ga, Cu, and Al were selected to form anisotropic nanocomposite bulk magnets via hot pressing followed by a hot deformation. The effects of Nb, Ga, Cu, and Al substitutions on intrinsic coercivity Hci and possible mechanisms behind the improvement in Hci, such as phase formations, anisotropy field HA, and microstructure were investigated. Experimental results indicated an over 20%–50% enhancement in Hci after hot deformation (HD) with Nb, Ga, and Cu additions for magnets with z=8 and z=10. Especially with the Nb addition, the Hci improved from 8.7 to 12 kOe for the z=8 magnet, and from 5 to 11 kOe for the z=10 magnet. An unusual enhancement in Hci, from 9 kOe after hot pressing (HP) at 700 °C to 11 kOe after HD at 850 °C, was observed in the Nb-doped magnet with z=10. Our analysis on possible mechanisms behind the improvement in Hci indicated that Ga and Cu atoms tend to accompany and thus likely to stabilize a 1:5H phase, which possesses a higher anisotropy field HA, resulting in an improvement of Hci. Nb atoms tend to localize at the grain boundaries of (1:5H or 2:17R) phases and form a Nb-rich CoFe phase with average sizes around 50 nm. This phase is believed to suppress grain growth during HP and HD resulting in a stronger Hci. A subgrain structure (∼50 nm) within the apparently larger grains (a few hundred nanometers) of 1:5H or 2:17R phases was observed in the Nb-doped HD-magnet of z=10. The formation of these subgrains could be the mechanism responsible for increased Hci values after HD. Al atoms did not show any particular location preference and positive effect on Hci. The highest (BH)max of 13.4 MG Oe was obtained on anisotropic magnets of Sm(Co0.74Fe0.2Ti0.05B0.01)8. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETS KW - THERMAL properties KW - SAMARIUM KW - COBALT KW - TITANIUM-iron alloys KW - NANOSTRUCTURED materials KW - ANISOTROPY KW - PHASE transformations (Physics) N1 - Accession Number: 42961751; Huang, M. Q. 1 Turgut, Z. 1 Chen, Z. M. 2 Shen, Y. H. 3 Lee, D. 3 Higgins, A. 3 Chen, C. H. 3 Liu, S. 3 Liu, J. F. 4 Horwath, J. C. 5 Fingers, R. T. 5; Affiliation: 1: Air Force Research Laboratory, UES Inc., 4401 Dayton-Xenia Road, Dayton, Ohio 45432, 2: Magnequench Inc., 61 Science Park Road, 01-17 Galen, Singapore 117525, 3: Magnetics Laboratory, University of Dayton, Dayton, Ohio 45469, 4: Electron Energy Corporation, 924 Links Ave., Landisville, Pennsylvania 17538, 5: Air Force Research Laboratory (AFRL), Wright-Patterson Air Force Base, Ohio 45433,; Source Info: Jun2009, Vol. 105 Issue 12, p123915-1; Subject Term: MAGNETS; Subject Term: THERMAL properties; Subject Term: SAMARIUM; Subject Term: COBALT; Subject Term: TITANIUM-iron alloys; Subject Term: NANOSTRUCTURED materials; Subject Term: ANISOTROPY; Subject Term: PHASE transformations (Physics); NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 5p; Illustrations: 3 Diagrams, 10 Graphs; Document Type: Article L3 - 10.1063/1.3153156 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=42961751&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Camargo, Jose F. AU - Kulkarni, Hemant AU - Agan, Brian K. AU - Gaitan, Alvaro A. AU - Beachy, Lisa A. AU - Srinivas, Sowmya AU - Weijing He AU - Anderson, Stephanie AU - Marconi, Vincent C. AU - Dolan, Matthew J. AU - Ahuja, Sunil K. T1 - Responsiveness of T Cells to Interleukin-7 Is Associated with Higher CD4+ T Cell Counts in HIV-1-Positive Individuals with Highly Active Antiretroviral Therapy-Induced Viral Load Suppression. JO - Journal of Infectious Diseases JF - Journal of Infectious Diseases Y1 - 2009/06/15/ VL - 199 IS - 12 M3 - Article SP - 1872 EP - 1882 SN - 00221899 AB - Background. Despite suppression of the human immunodeficiency virus type1 (HIV-1)load by highly active antiretroviral therapy (HAART), recovery of CD4+ Tcell counts can be impaired. We investigated whether this impairment may be associated with hyporesponsiveness of T cells to γ-chain (γc) cytokines known to influence T cell homeostasis. Methods. The responsiveness of T cells to interleukin (IL)-2, IL-7, and IL-15 was determined by assessing cytokine-induced phosphorylation of the signal transducer and activator of transcription 5 (STAT5) in peripheral T cells obtained from 118 HIV-positive subjects and 13 HIV-negative subjects. Results. The responsiveness of T cells to interleukin (IL)-7 but not to IL-2 or IL-15 was lower among HIV-positive subjects than among HIV-negative subjects. Among subjects with viral load suppression, the degree of IL-7 responsiveness (1) correlated with naive CD4+ T cell counts and was a better immune correlate of the prevailing CD4+ T cell count than were levels of human leukocyte antigen-DR1 or programmed death-1, which are predictors of T cell homeostasis during HIV infection; and (2) was greater in subjects with complete (i.e., attainment of ⩾500 CD4+ T cells/mm³ ⩾5 years after initiation of HAART) versus incomplete immunologic responses. The correlation between plasma levels of IL-7 and CD4+ T cell counts during HAART was maximal in subjects with increased IL-7 responsiveness. Conclusions. Responsiveness of T cells to IL-7 is associated with higher CD4+ T cell counts during HAART and thus may be a determinant of the extent of immune reconstitution. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Infectious Diseases is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - T cells KW - IMMUNE system KW - HIV (Viruses) KW - HIGHLY active antiretroviral therapy KW - HIV infections KW - CD antigens KW - VIRAL receptors KW - CELLS KW - PHYSIOLOGY KW - BIOLOGICAL control systems N1 - Accession Number: 41534709; Camargo, Jose F. 1,2 Kulkarni, Hemant 1,2 Agan, Brian K. 3 Gaitan, Alvaro A. 1,2 Beachy, Lisa A. 1,2 Srinivas, Sowmya 1,2 Weijing He 1,2 Anderson, Stephanie 3,4,5,6 Marconi, Vincent C. 3,4,6 Dolan, Matthew J. 4,5,6 Ahuja, Sunil K. 1,2,7,8; Affiliation: 1: Veterans Administration Research Center for AIDS and HIV-1 Infection, South Texas Veterans Health Care System, San Antonio, Texas 2: Department of Medicine, University of Texas Health Science Center, San Antonio, Texas 3: Infectious Disease Clinical Research Program, Uniformed Services University of the Health Sciences, Bethesda, Maryland 4: Infectious Diseases Service, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas 5: Henry M. Jackson Foundation, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base 6: San Antonio Military Medical Center, Fort Sam Houston and Lackland Air Force Base, Texas 7: Department of Microbiology and Immunology, University of Texas Health Science Center, San Antonio, Texas 8: Department of Biochemistry, University of Texas Health Science Center, San Antonio, Texas; Source Info: 6/15/2009, Vol. 199 Issue 12, p1872; Subject Term: T cells; Subject Term: IMMUNE system; Subject Term: HIV (Viruses); Subject Term: HIGHLY active antiretroviral therapy; Subject Term: HIV infections; Subject Term: CD antigens; Subject Term: VIRAL receptors; Subject Term: CELLS; Subject Term: PHYSIOLOGY; Subject Term: BIOLOGICAL control systems; Number of Pages: 11p; Document Type: Article L3 - 10.1086/598858 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=41534709&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Andrew F. Clements AU - Joy E. Haley AU - Augustine M. Urbas AU - Alan Kost AU - R. David Rauh AU - Jane F. Bertone AU - Fei Wang AU - Brian M. Wiers AU - De Gao AU - Todd S. Stefanik AU - Andrew G. Mott AU - David M. Mackie T1 - Photophysical Properties of C60Colloids Suspended in Water with Triton X-100 Surfactant: Excited-State Properties with Femtosecond Resolution. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2009/06/11/ VL - 113 IS - 23 M3 - Article SP - 6437 EP - 6445 SN - 10895639 AB - We examine the photophysics of a colloidal suspension of C60particles in a micellar solution of Triton X-100 and water, prepared via a new synthesis which allows high-concentration suspensions. The particle sizes are characterized by transmission electron microscopy and dynamic light scattering and found to be somewhat polydisperse in the range of 10−100 nm. The suspension is characterized optically by UV−vis spectroscopy, femtosecond transient absorption spectroscopy, laser flash photolysis, and z-scan. The ground-state absorbance spectrum shows a broad absorbance feature centered near 450 nm which is indicative of colloidal C60. The transient absorption dynamics, presented for the first time with femtosecond resolution, are very similar to that of thin films of C60and indicate a strong quenching of the singlet excited state on short time scales and evidence of little intersystem crossing to a triplet excited state. Laser flash photolysis reveals that a triplet excited-state absorption spectrum, which is essentially identical in shape to that of molecular C60solutions, does indeed arise, but with much lower magnitude and somewhat shorter lifetime. Z-scan analysis confirms that the optical response of this material is dominated by nonlinear scattering. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOCHEMISTRY KW - COLLOIDS KW - SUSPENSIONS (Chemistry) KW - WATER KW - SURFACE active agents KW - EXCITED state chemistry KW - FEMTOCHEMISTRY KW - RESOLUTION (Optics) N1 - Accession Number: 41427357; Andrew F. Clements 1 Joy E. Haley 1 Augustine M. Urbas 1 Alan Kost 1 R. David Rauh 1 Jane F. Bertone 1 Fei Wang 1 Brian M. Wiers 1 De Gao 1 Todd S. Stefanik 1 Andrew G. Mott 1 David M. Mackie 1; Affiliation: 1: US Army RDECOM-TARDEC, MS-263, 6501 E. 11 Mile Rd., Warren, MI 48397-5000, Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, OH 45433, UES, Inc., 4401 Dayton-Xenia Road, Dayton, Ohio 45432, University of Arizona, College of Optical Sciences, 1630 E. University Blvd., Tucson, AZ 85721-0094, EIC Laboratories, Inc., 111 Downey Street, Norwood, MA 02062, Nanocerox, Inc., 712 State Circle, Ann Arbor, MI 48108, and US Army Research Laboratory, Attn: AMSRD-ARL-SE-EM, 2800 Powder Mill Road, Adelphi, MD 20783-1197; Source Info: Jun2009, Vol. 113 Issue 23, p6437; Subject Term: PHOTOCHEMISTRY; Subject Term: COLLOIDS; Subject Term: SUSPENSIONS (Chemistry); Subject Term: WATER; Subject Term: SURFACE active agents; Subject Term: EXCITED state chemistry; Subject Term: FEMTOCHEMISTRY; Subject Term: RESOLUTION (Optics); NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=41427357&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patnaik, Anil K. AU - Roy, Sukesh AU - Gord, James R. AU - Lucht, Robert P. AU - Settersten, Thomas B. T1 - Effects of collisions on electronic-resonance-enhanced coherent anti-Stokes Raman scattering of nitric oxide. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2009/06/07/ VL - 130 IS - 21 M3 - Article SP - 214304 PB - American Institute of Physics SN - 00219606 AB - A six-level model is developed and used to study the effects of collisional energy transfer and dephasing on electronic-resonance-enhanced coherent anti-Stokes Raman scattering (ERE-CARS) in nitric oxide. The model includes the three levels that are coherently coupled by the three applied lasers as well as three additional bath levels that enable inclusion of the effects of electronic quenching and rotational energy transfer. The density-matrix equations that describe the evolution of the relevant populations and coherences are presented. The parametric dependencies of the ERE-CARS signal on collisional energy transfer and dephasing processes are described in terms of both a steady-state analytical solution and the numerical solutions to the governing equations. In the weak-field limit, the ERE-CARS signal scales inversely with the square of the dephasing rates for the electronic and Raman coherences. In accord with published experimental observations [Roy et al., Appl. Phys. Lett. 89, 104105 (2006)], the ERE-CARS signal is shown to be insensitive to the collisional quenching rate. Parametric dependencies on quenching, rotational energy transfer, and pure electronic dephasing are presented, demonstrating reduced collisional dependence for saturating laser fields. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENERGY transfer KW - FORCE & energy KW - RESONANCE KW - NITRIC oxide KW - RAMAN effect KW - OPTOELECTRONIC devices N1 - Accession Number: 41139181; Patnaik, Anil K. 1,2; Email Address: anil.patnaik@wpafb.af.mil Roy, Sukesh 1 Gord, James R. 1 Lucht, Robert P. 3 Settersten, Thomas B. 4; Affiliation: 1: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, Ohio 45433, 2: Department of Physics, Wright State University, Dayton, Ohio 45435, 3: Department of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, 4: Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551,; Source Info: 6/7/2009, Vol. 130 Issue 21, p214304; Subject Term: ENERGY transfer; Subject Term: FORCE & energy; Subject Term: RESONANCE; Subject Term: NITRIC oxide; Subject Term: RAMAN effect; Subject Term: OPTOELECTRONIC devices; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 11p; Illustrations: 1 Diagram, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.3137106 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=41139181&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Polak, Milan AU - Barnes, Paul N. AU - Mozola, Pavol AU - Levin, George A. T1 - Critical Current in YBCO Coated Conductors in the Presence of a Macroscopic Defect. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2009/06/03/Jun2009 Part 3 of 3 VL - 19 IS - 3 M3 - Article SP - 2921 EP - 2924 SN - 10518223 AB - We have studied the effects of localized defects in the YBCO coated conductors on the critical current. The artificial defects were introduced into 4, 10 and 12 mm wide tapes as cuts of various lengths made either by laser ablation or mechanical means. Transport measurements were carried out in an external variable magnetic field to obtain the I-V characteristics of the damaged areas. The distribution of the magnetic field in the vicinity of the defects has been mapped as well. The reduction of the critical current by the defects, with and without an external DC magnetic field are discussed and compared with existing theories. A criterion for determining the critical current in the area containing a defect is suggested. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRITICAL currents KW - ELECTRIC conductors KW - LASER ablation KW - MAGNETIC fields KW - HIGH temperature superconductors KW - Coated conductors KW - defects KW - HTS KW - YBCO N1 - Accession Number: 43891951; Polak, Milan 1; Email Address: milan.polak@savba.sk Barnes, Paul N. 2; Email Address: paul.barnes@wpath.af.mil Mozola, Pavol 1 Levin, George A. 2; Affiliation: 1: Institute of Electrical Engineering, Slovak Academy of Sciences, SK-84104 Bratislava, Slovakia 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Jun2009 Part 3 of 3, Vol. 19 Issue 3, p2921; Subject Term: CRITICAL currents; Subject Term: ELECTRIC conductors; Subject Term: LASER ablation; Subject Term: MAGNETIC fields; Subject Term: HIGH temperature superconductors; Author-Supplied Keyword: Coated conductors; Author-Supplied Keyword: defects; Author-Supplied Keyword: HTS; Author-Supplied Keyword: YBCO; Number of Pages: 4p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1109/TASC.2009.2019090 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43891951&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varanasi, Chakrapani V. AU - Burke, J. AU - Brunke, L. AU - Lee, J. H. AU - Wang, H. AU - Barnes, Paul N. T1 - Comparative Study Between Similarly Processed YBa2Cu3O7-x Films With Y2BaCuO5 or BaSnO3 Additions. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2009/06/03/Jun2009 Part 3 of 3 VL - 19 IS - 3 M3 - Article SP - 3152 EP - 3155 SN - 10518223 AB - A special YBa2Cu3O7-x (YBCO) target with a thin sector of second phase material, in this case either Y2BaCuO5 (Y211) or BaSnO3 (BSO), was used to deposit YBCO films with non-layered nanoparticles on single crystal LaAlO3 and biaxially textured Ni-S at.% W substrates buffered with CeO2 and YSZ layers(coated conductors). Although identical processing conditions were used, TEM images indicated that random Y211 nanoparticles in the case of YBCO+Y211, and evenly spaced BSO nanocolumns iii the case of YBCO+BSO, form in the YBCO films. While YBCO plane buckling was observed at many places in the case of YBCO+Y211, a high density of stacking faults and dislocations were observed in the case of YBCO+BSO near the BSO columns. In transport critical current density (Jo) angular dependence measurements, the absence of nanocolumns in YBCO+Y211 films resulted in the absence of a peak at 0°, J(H//e), in Jc vs. θ plots, as compared to a clear peak at 0° observed in YBCO+BSO films with the nanocolumns. The in-field J measurements indicated small low-field Jc enhancements at 77 K in YBCO+Y211 films but more than an order of magnitude improvement in high-field Jc in YBCO+BSO films due to the differences in the microstructures. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - NANOPARTICLES KW - NUCLEAR reactors -- Buckling KW - CRITICAL currents KW - MICROSTRUCTURE KW - BaSnO3 KW - coated conductors KW - flux pinning KW - pulsed laser ablation KW - Y211 N1 - Accession Number: 43892006; Varanasi, Chakrapani V. 1,2; Email Address: chakrapani.varanasi@wpath.af.mil Burke, J. 1,2; Email Address: jack.burke@wpafliaf.mil Brunke, L. 1,2; Email Address: lyle.brunke@wpath.af.mil Lee, J. H. 3; Email Address: leej@mail.ece.tamu.edu Wang, H. 3; Email Address: wangh@mail.ece.tamu.edu Barnes, Paul N. 2; Email Address: paulbarnes@wpafb.af.mil; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469 USA 2: Air Force Research Laboratory, WPAFB, OH, USA 3: Texas A&M University, College Station, TX 77843 USA; Source Info: Jun2009 Part 3 of 3, Vol. 19 Issue 3, p3152; Subject Term: THIN films; Subject Term: NANOPARTICLES; Subject Term: NUCLEAR reactors -- Buckling; Subject Term: CRITICAL currents; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: BaSnO3; Author-Supplied Keyword: coated conductors; Author-Supplied Keyword: flux pinning; Author-Supplied Keyword: pulsed laser ablation; Author-Supplied Keyword: Y211; Number of Pages: 4p; Illustrations: 6 Black and White Photographs, 3 Graphs; Document Type: Article L3 - 10.1109/TASC.2009.2018420 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43892006&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, Timothy J. AU - Baca, F. Javier AU - Mullins, Matthew J. AU - Pierce, Neal A. AU - Campbell, Timothy A. AU - Brewster, Eric L. AU - Barnes, Paul N. AU - Wang, Haiyan AU - Sumption, Michael D. T1 - Temperature and Magnetic Field Dependence of Critical Current Density of YBCO With Varying Flux Pinning Additions. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2009/06/03/Jun2009 Part 3 of 3 VL - 19 IS - 3 M3 - Article SP - 3270 EP - 3274 SN - 10518223 AB - The critical current density (Jc) of YBa2Cu3O7-z films doped with varying flux pinning nanoparticle additions was systematically studied, for applied magnetic fields of H = 0-9 T and operation temperatures T = 20-77 K. Films were prepared with pulsed laser deposition by (M/YBCO)N multilayer or (YBCO)1-xMx single-target methods, for different M phases including Y2O3, Y2BaCuO5 (Y211) green-phase, and BaZrO3. Very significant differences of Jc(H//c, 20 - 77 K) were measured for optimized M phase additions, that are difficult to model or predict at present. Multilayer films with Y211 and Y2O3 nanoparticle additions had the highest Jc(20 - 77K) for H < 4 T, and YBCO+BZO-nanorod samples had the strongest Jc(H) for H > 4 T and 65-77 K, however not for T < 50 K. Seemingly unusual Jc(H, T) properties were measured for (BZO/YBCO)N multilayer films when compared to YBCO and other doped films; Jc(H) was almost the same as YBCO at 77 K, however at 30 K Jc(H > 2 T) had the strongest properties increasing 70% compared to YBCO+nanoaddition films and increasing 400% compared to YBCO. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRITICAL currents KW - SUPERCONDUCTIVITY KW - FLUX pinning KW - SEMICONDUCTOR nanoparticles KW - HIGH temperature superconductors KW - MULTILAYERED thin films KW - PULSED laser deposition KW - MAGNETIC fields KW - Critical current density KW - engineering current density KW - flux pinning KW - high temperature superconductor KW - nanoparticle KW - YBa2Cu3O7-x N1 - Accession Number: 43892034; Haugan, Timothy J. 1; Email Address: timothy.haugan@wpafb.af.mil Baca, F. Javier 1; Email Address: francisco.baca@wpafb.af.mil Mullins, Matthew J. 1; Email Address: matthew.mullins@wpafb.af.mil Pierce, Neal A. 1; Email Address: piercena@notes.udayton.edu Campbell, Timothy A. 1; Email Address: tmcamp999@yahoo.com Brewster, Eric L. 1; Email Address: enc.brewster@wpafb.af.mil Barnes, Paul N. 1; Email Address: paul.barnes@wpatb.af.mil Wang, Haiyan 2; Email Address: hwang00@neo.tamu.edu Sumption, Michael D. 3; Email Address: sumption@matsceng.ohio-state.edu; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA 2: Texas A&M University, College Station, TX 77843 USA 3: Ohio State University, Columbus OH 43210 USA; Source Info: Jun2009 Part 3 of 3, Vol. 19 Issue 3, p3270; Subject Term: CRITICAL currents; Subject Term: SUPERCONDUCTIVITY; Subject Term: FLUX pinning; Subject Term: SEMICONDUCTOR nanoparticles; Subject Term: HIGH temperature superconductors; Subject Term: MULTILAYERED thin films; Subject Term: PULSED laser deposition; Subject Term: MAGNETIC fields; Author-Supplied Keyword: Critical current density; Author-Supplied Keyword: engineering current density; Author-Supplied Keyword: flux pinning; Author-Supplied Keyword: high temperature superconductor; Author-Supplied Keyword: nanoparticle; Author-Supplied Keyword: YBa2Cu3O7-x; Number of Pages: 5p; Illustrations: 1 Black and White Photograph, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1109/TASC.2009.2018260 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43892034&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sokolovsky, Vladimir AU - Meerovich, Victor AU - Spektor, Marat AU - Levin, George A. AU - Vajda, Istvan T1 - Losses in Superconductors Under Non-Sinusoidal Currents and Magnetic Fields. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2009/06/03/Jun2009 Part 3 of 3 VL - 19 IS - 3 M3 - Article SP - 3344 EP - 3347 SN - 10518223 AB - Study of AC losses in superconducting wires and tapes is usually restricted by consideration of applied sinusoidal currents and/or magnetic fields. However, currents in electric power systems contain a wide variety of harmonics. The currents become strongly non-sinusoidal at the operation of converters, non-linear reactors, and during transient and overload conditions. We report the results of the analysis of the influence of higher harmonics of the current and magnetic field on AC losses in superconducting slabs, strips and coated conductors. Analytical expressions are obtained in the framework of Bean's critical state model; the power law voltage-current characteristics are treated numerically. It is shown that the contribution of higher harmonics to AC losses in superconducting elements can be tens times larger than in normal metals and the 5% harmonic can increases the losses by up to 20%. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTORS -- Magnetic properties KW - MAGNETIC fields KW - ELECTRIC power systems KW - SUPERCONDUCTIVITY KW - HARMONICS (Electric waves) KW - AC loss KW - coated conductors KW - non-sinusoidal magnetic fields KW - superconductors N1 - Accession Number: 43892052; Sokolovsky, Vladimir 1; Email Address: sokolovv@bgumail.bgu.ac.il Meerovich, Victor 1; Email Address: victorm@bgu.ac.il Spektor, Marat 1; Email Address: marats@bgu.ac.il Levin, George A. 2; Email Address: George.Levin@WPAFB.AF.MIL Vajda, Istvan 3; Email Address: vajda@supertech.vgt.bme.hu; Affiliation: 1: Physics Department, Ben Gurion University of the Negev, Beer-Sheva 84105, Israel 2: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433 USA 3: Department of Electric Power Engineering, Budapest University of Technology and Economics, Egry Jozsef utca 18, H-Ill Budapest, Hungary; Source Info: Jun2009 Part 3 of 3, Vol. 19 Issue 3, p3344; Subject Term: SUPERCONDUCTORS -- Magnetic properties; Subject Term: MAGNETIC fields; Subject Term: ELECTRIC power systems; Subject Term: SUPERCONDUCTIVITY; Subject Term: HARMONICS (Electric waves); Author-Supplied Keyword: AC loss; Author-Supplied Keyword: coated conductors; Author-Supplied Keyword: non-sinusoidal magnetic fields; Author-Supplied Keyword: superconductors; Number of Pages: 4p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1109/TASC.2009.2019206 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43892052&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baca, F. Javier AU - Emergo, Rose Lyn AU - Wu, Judy Z. AU - Haugan, Timothy J. AU - Reichart, Joshua N. AU - Barnes, Paul N. T1 - Micro structural Characterization of YBa2Cu3O7-x Films With BaZrO3 Nanorods Grown on Vicinal SrTiO3 Substrates. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2009/06/03/Jun2009 Part 3 of 3 VL - 19 IS - 3 M3 - Article SP - 3371 EP - 3374 SN - 10518223 AB - When grown on miscut SrTiO3 substrates, significant microstructural changes are observed in BaZrO3-doped YBa2Cu3O7-x thin films when compared to those on non-vicinal substrates. Scanning Electron Microscopy indicates a surface morphology strongly influenced by the vicinal angle, and an accumulation of BaZrO3 particles is observed near the step edges. Cross-sectional Transmission Electron Microscopy reveals that while the columnar formations of BaZrO3 rods typically seen on non-vicinal substrates are present, a significant increase in planar defects in a 100 vicinal film are observed. The effects observed with increasing miscut angle indicate that the modulated surface provided by the vicinal substrate influences the crystalline quality of the YBCO matrix and BZO columnar formation through the thickness of the film. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTORS KW - THIN films KW - SCANNING electron microscopy KW - MAGNETIC fields KW - MICROSTRUCTURE KW - BZO KW - HTS KW - microstructure KW - vicinal substrate KW - YBCO N1 - Accession Number: 43892058; Baca, F. Javier 1,2; Email Address: jbaca@ku.edu Emergo, Rose Lyn 2; Email Address: remergo@ku.edu Wu, Judy Z. 2; Email Address: jwu@ku.edu Haugan, Timothy J. 1; Email Address: timothy.haugan@wpath.af.mil Reichart, Joshua N. Barnes, Paul N. 1; Email Address: paul.barnes@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, WPAFB, OH 45433 USA 2: University of Kansas, Department of Physics and Astronomy, Lawrence, KS 66045 USA; Source Info: Jun2009 Part 3 of 3, Vol. 19 Issue 3, p3371; Subject Term: SUPERCONDUCTORS; Subject Term: THIN films; Subject Term: SCANNING electron microscopy; Subject Term: MAGNETIC fields; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: BZO; Author-Supplied Keyword: HTS; Author-Supplied Keyword: microstructure; Author-Supplied Keyword: vicinal substrate; Author-Supplied Keyword: YBCO; Number of Pages: 4p; Illustrations: 3 Black and White Photographs, 1 Chart, 1 Graph; Document Type: Article L3 - 10.1109/TASC.2009.2017908 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43892058&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Levin, George A. AU - Barnes, Paul N. AU - Rodriguez, Jose P. AU - Connors, Jake A. AU - Bulmer, John S. T1 - Stability and Normal Zone Propagation Speed in YBCO Coated Conductors With Increased Interfacial Resistance. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2009/06/02/Jun2009 Part 2 of 3 VL - 19 IS - 3 M3 - Article SP - 2504 EP - 2507 SN - 10518223 AB - We will discuss how stability and speed of normal zone propagation in YBCO-coated conductors is affected by interfacial resistance between the superconducting film and the stabilizer. Our numerical simulation has shown that the increased interfacial resistance substantially increases speed of normal zone propagation and decreases the stability margins. Optimization of the value of the resistance may lead to a better compromise between stability and quench protection requirements than what is found in currently manufactured coated conductors. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC lines -- Superconducting KW - ELECTRIC power system stability KW - SUPERCONDUCTORS KW - EQUIPMENT & supplies KW - ELECTRIC wire -- Testing KW - ELECTRIC currents KW - ELECTRIC resistance KW - HEATING effects KW - Coated conductors KW - normal zone KW - stability N1 - Accession Number: 43924001; Levin, George A. 1; Email Address: george.levin@wpafb.af.mil Barnes, Paul N. 1; Email Address: paul.bames@wpafb.af.mil Rodriguez, Jose P. 2 Connors, Jake A. 3 Bulmer, John S. 1,4; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: Department of Physics and Astronomy, California State University, Los Angeles, CA, USA 3: Department of Physics, Ohio State University, Columbus, OH, USA 4: ISAF, Kabul, Afghanistan; Source Info: Jun2009 Part 2 of 3, Vol. 19 Issue 3, p2504; Subject Term: ELECTRIC lines -- Superconducting; Subject Term: ELECTRIC power system stability; Subject Term: SUPERCONDUCTORS; Subject Term: EQUIPMENT & supplies; Subject Term: ELECTRIC wire -- Testing; Subject Term: ELECTRIC currents; Subject Term: ELECTRIC resistance; Subject Term: HEATING effects; Author-Supplied Keyword: Coated conductors; Author-Supplied Keyword: normal zone; Author-Supplied Keyword: stability; NAICS/Industry Codes: 335931 Current-Carrying Wiring Device Manufacturing; Number of Pages: 4p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1109/TASC.2009.2019604 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43924001&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - PELTIER, JEAN-PHILIPPE N. AU - MEER, THOMAS T1 - Air Domain Development in Africa. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2009///Summer2009 VL - 23 IS - 2 M3 - Article SP - 111 EP - 113 PB - Superintendent of Documents SN - 1555385X AB - The article focuses on the need of air domain development (ADD) in Africa. ADD highlights the building of a national air domain by increasing the air safety and expanding trade through development of civil-military partnerships while working towards control of the sovereign airspace. ADD can enhance economic growth and political stability on a troubled and instable continent. KW - AIR power (Military science) KW - POLITICAL stability KW - ECONOMIC development KW - CIVIL-military relations KW - AFRICA N1 - Accession Number: 43979550; PELTIER, JEAN-PHILIPPE N. 1 MEER, THOMAS 2; Affiliation: 1: Director, Sub-Saharan Africa Course, United States Air force Special operations School, Hurlburt Field, Florida. 2: Chief, Irregular Warfare Branch, Irregular Warfare Division, USAF Special operations School.; Source Info: Summer2009, Vol. 23 Issue 2, p111; Subject Term: AIR power (Military science); Subject Term: POLITICAL stability; Subject Term: ECONOMIC development; Subject Term: CIVIL-military relations; Subject Term: AFRICA; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43979550&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Basler, Matt T1 - Rampant Raider: An A-4 Skyhawk Pilot in Vietnam. JO - Air Power History JF - Air Power History Y1 - 2009///Summer2009 VL - 56 IS - 2 M3 - Book Review SP - 52 EP - 52 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "Rampant Raider: An A-4 Skyhawk Pilot in Vietnam," by Stephen R. Gray. KW - VIETNAM War, 1961-1975 KW - NONFICTION KW - GRAY, Stephen R. KW - RAMPANT Raider: An A-4 Skyhawk Pilot in Vietnam (Book) N1 - Accession Number: 41577011; Basler, Matt 1; Affiliation: 1: Instructor, US. Air Force Academy; Source Info: Summer2009, Vol. 56 Issue 2, p52; Subject Term: VIETNAM War, 1961-1975; Subject Term: NONFICTION; Reviews & Products: RAMPANT Raider: An A-4 Skyhawk Pilot in Vietnam (Book); People: GRAY, Stephen R.; Number of Pages: 1/3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=41577011&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pomeroy, Steven A. T1 - We Flew, We Fell, We Lived: Stories from RCAF Prisoners of War and Evaders, 1939-1945. JO - Air Power History JF - Air Power History Y1 - 2009///Summer2009 VL - 56 IS - 2 M3 - Book Review SP - 53 EP - 54 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "We Flew, We Fell, We Lived: Stories from RCAF Prisoners of War and Evaders, 1939-1945," by Philip Lagrandeur. KW - PRISONERS of war KW - NONFICTION KW - LAGRANDEUR, Philip KW - WE Flew, We Fell, We Lived: Stories From RCAF Prisoners of War & Evaders 1939-1945 (Book) N1 - Accession Number: 41577014; Pomeroy, Steven A. 1; Affiliation: 1: USAF PhD, Deputy Department Head, Military Strategic Studies, US. Air Force Academy; Source Info: Summer2009, Vol. 56 Issue 2, p53; Subject Term: PRISONERS of war; Subject Term: NONFICTION; Reviews & Products: WE Flew, We Fell, We Lived: Stories From RCAF Prisoners of War & Evaders 1939-1945 (Book); People: LAGRANDEUR, Philip; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=41577014&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beach, Theodore L. T1 - Initial phase and free-particle wave packet evolution. JO - American Journal of Physics JF - American Journal of Physics Y1 - 2009/06// VL - 77 IS - 6 M3 - Article SP - 538 EP - 545 SN - 00029505 AB - The evolution of the free-particle wave function in one dimension is the same as scalar Fresnel diffraction from a one-dimensional structure. Quantum mechanics courses often explore the propagation of Gaussian wave packets, but the diffractionlike mathematics is sufficiently tractable to investigate the propagation of other wave packets, both numerically and analytically. More importantly, the diffraction analogy facilitates the development of an intuitive understanding of the role that the initial phase plays in free-particle wave packet evolution. This article considers some of the effects of the initial phase function on the subsequent evolution of free-particle wave packets in the position representation. These considerations reinforce the idea that the classical mechanics limit embodied in the correspondence principle and formalized in the Ehrenfest theorem is necessarily an incomplete representation of quantum, behavior. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Physics is the property of American Association of Physics Teachers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVE functions KW - QUANTUM theory KW - WAVE packets KW - PHYSICS -- Study & teaching KW - GAUSSIAN processes KW - MECHANICS (Physics) KW - THERMODYNAMICS N1 - Accession Number: 40838526; Beach, Theodore L. 1; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731; Source Info: Jun2009, Vol. 77 Issue 6, p538; Subject Term: WAVE functions; Subject Term: QUANTUM theory; Subject Term: WAVE packets; Subject Term: PHYSICS -- Study & teaching; Subject Term: GAUSSIAN processes; Subject Term: MECHANICS (Physics); Subject Term: THERMODYNAMICS; Number of Pages: 8p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1119/1.3089531 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=40838526&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harahsheh, Ashraf AU - Doty, Angela T1 - Choices We Make. JO - Clinical Pediatrics JF - Clinical Pediatrics Y1 - 2009/06// VL - 48 IS - 5 M3 - Article SP - 481 EP - 482 SN - 00099228 AB - A personal narrative is presented which explores the author's experience of the importance of balancing careers, marriages and children. KW - FIRST person narrative KW - WORK & family N1 - Accession Number: 40396011; Harahsheh, Ashraf 1; Email Address: aharahsh@cnmc.org Doty, Angela 1,2; Affiliation: 1: Center for Heart, Lung and Kidney Disease, Children's National Medical Center, George Washington University, Washington 2: Emergency Medicine, United States Air Force, Medical Corps, Malcolm Grow Medical Center, Andrews Air Force Base, Maryland; Source Info: Jun2009, Vol. 48 Issue 5, p481; Subject Term: FIRST person narrative; Subject Term: WORK & family; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=40396011&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sager, R.J. AU - Klein, P.J. AU - Lagoudas, D.C. AU - Zhang, Q. AU - Liu, J. AU - Dai, L. AU - Baur, J.W. T1 - Effect of carbon nanotubes on the interfacial shear strength of T650 carbon fiber in an epoxy matrix JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2009/06// VL - 69 IS - 7/8 M3 - Article SP - 898 EP - 904 SN - 02663538 AB - Abstract: The interfacial shear strength of carbon nanotube coated carbon fibers in epoxy was studied using the single-fiber composite fragmentation test. The carbon fibers were coated with carbon nanotubes (CNT) on the fiber surface using thermal chemical vapor deposition (CVD). The CVD process was adjusted to produce two CNT morphologies for the study: radially aligned and randomly oriented. The purpose of the CNT coating was to potentially produce a multifunctional structural composite. Results of the single-fiber fragmentation tests indicate an improvement in interfacial shear strength with the addition of a nanotube coating. This improvement can most likely be attributed to an increase in the interphase yield strength as well as an improvement in interfacial adhesion due to the presence of the nanotubes. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON fibers KW - EPOXY compounds KW - CARBON nanotubes KW - PROTECTIVE coatings KW - INTERFACES (Physical sciences) KW - SHEAR (Mechanics) KW - CHEMICAL vapor deposition KW - A. Carbon fibres KW - A. Nano composites KW - A. Polymer–matrix composites (PMCs) KW - B. Fibre/matrix bond KW - B. Fragmentation N1 - Accession Number: 38322827; Sager, R.J. 1 Klein, P.J. 1 Lagoudas, D.C. 1; Email Address: lagoudas@aeromail.tamu.edu Zhang, Q. 2 Liu, J. 2 Dai, L. 2 Baur, J.W. 3; Affiliation: 1: Texas A&M University, Department of Aerospace Engineering, 3141 TAMU, College Station, TX 77843-3141, USA 2: University of Dayton, Department of Chemical and Materials Engineering, 300 College Park, Dayton, OH 45469-0240, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, 1864 4th Street, WPAFB, OH 45433-7131, USA; Source Info: Jun2009, Vol. 69 Issue 7/8, p898; Subject Term: CARBON fibers; Subject Term: EPOXY compounds; Subject Term: CARBON nanotubes; Subject Term: PROTECTIVE coatings; Subject Term: INTERFACES (Physical sciences); Subject Term: SHEAR (Mechanics); Subject Term: CHEMICAL vapor deposition; Author-Supplied Keyword: A. Carbon fibres; Author-Supplied Keyword: A. Nano composites; Author-Supplied Keyword: A. Polymer–matrix composites (PMCs); Author-Supplied Keyword: B. Fibre/matrix bond; Author-Supplied Keyword: B. Fragmentation; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.compscitech.2008.12.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38322827&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Insoo Woo AU - SungYe Kim AU - Maciejewski, Ross AU - Ebert, David S. AU - Ropp, Timothy D. AU - Thomas, Krystal T1 - SDViz: A Context-Preserving Interactive Visualization System for Technical Diagrams. JO - Computer Graphics Forum JF - Computer Graphics Forum Y1 - 2009/06// VL - 28 IS - 3 M3 - Article SP - 943 EP - 950 PB - Wiley-Blackwell SN - 01677055 AB - When performing daily maintenance and repair tasks, technicians require access to a variety of technical diagrams. As technicians trace components and diagrams from page-to-page, within and across manuals, the contextual information of the components they are analyzing can easily be lost. To overcome these issues, we have developed a Schematic Diagram Visualization System (SDViz) designed for maintaining and highlighting contextual information in technical documents, such as schematic and wiring diagrams. Our system incorporates various features to aid in the navigation and diagnosis of faults, as well as maintaining contextual information when tracing components/connections through multiple diagrams. System features include highlighting relationships between components and connectors, diagram annotation tools, the animation of flow through the system, a novel contextual blending method, and a variety of traditional focus+context visualization techniques. We have evaluated the usefulness of our system through a qualitative user study in which subjects utilized our system in diagnosing faults during a standard aircraft maintenance exercise. [ABSTRACT FROM AUTHOR] AB - Copyright of Computer Graphics Forum is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VISUALIZATION KW - CHARTS, diagrams, etc. KW - COMPUTER file sharing KW - COGNITIVE analysis KW - MENTAL models theory (Communication) KW - REASONING (Logic) KW - I.3.6 [Computer Graphics]: Methodology and Techniques—Interaction techniques KW - I.3.8 [Computer Graphics]: Applications N1 - Accession Number: 43460258; Insoo Woo 1; Email Address: iwoo@purdue.edu SungYe Kim 1; Email Address: inside@purdue.edu Maciejewski, Ross 1; Email Address: rmacieje@purdue.edu Ebert, David S. 1; Email Address: ebertd@purdue.edu Ropp, Timothy D. 2; Email Address: tropp@purdue.edu Thomas, Krystal 3; Email Address: Krystal.Thomas@wpafb.af.mil; Affiliation: 1: Electrical and Computer Engineering, Purdue University, USA 2: Aviation Technology, Purdue University, USA 3: Air Force Research Laboratory, USA; Source Info: Jun2009, Vol. 28 Issue 3, p943; Subject Term: VISUALIZATION; Subject Term: CHARTS, diagrams, etc.; Subject Term: COMPUTER file sharing; Subject Term: COGNITIVE analysis; Subject Term: MENTAL models theory (Communication); Subject Term: REASONING (Logic); Author-Supplied Keyword: I.3.6 [Computer Graphics]: Methodology and Techniques—Interaction techniques; Author-Supplied Keyword: I.3.8 [Computer Graphics]: Applications; Number of Pages: 8p; Illustrations: 1 Color Photograph, 5 Diagrams, 1 Graph; Document Type: Article L3 - 10.1111/j.1467-8659.2009.01454.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43460258&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guha, S. AU - Rogers, J.W. AU - Sheng, Q. T1 - Effective stretching strategies for paraxial lightwave propagation simulations JO - Computers & Structures JF - Computers & Structures Y1 - 2009/06// VL - 87 IS - 11/12 M3 - Article SP - 784 EP - 792 SN - 00457949 AB - Abstract: Stretching computation strategies, including the hyperbolic exponential fittings along the lens interface, stretching transformations in z- and r-directions are discussed in this paper. The resulted adapted finite difference schemes are not only simple in structure, but also highly effective and efficient in the solution of paraxial Helmholtz equations for light beam propagation simulations and high performance lens designs. Cylindrically symmetric lens domains are assumed. Simulation results are given to illustrate the aforementioned numerical strategies with laboratory applications. Detailed algorithmic structures are given for immediate programming implementations and for similar lightwave propagation computation issues. [Copyright &y& Elsevier] AB - Copyright of Computers & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER simulation KW - ELECTROMAGNETIC waves KW - HYPERBOLIC differential equations KW - TRANSFORMATIONS (Mathematics) KW - FINITE differences KW - COMPUTATIONAL grids (Computer systems) KW - Finite difference approximations KW - Hyperbolic exponential fittings KW - Light beam propagations KW - Paraxial differential equations KW - Stretching transformations KW - Uniform and nonuniform grids N1 - Accession Number: 39347520; Guha, S. 1 Rogers, J.W. 2 Sheng, Q. 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, OH 45433-7702, United States 2: Center for Astrophysics, Space Physics and Engineering Research, Department of Mathematics, Baylor University, Waco, TX 76798-7328, United States; Source Info: Jun2009, Vol. 87 Issue 11/12, p784; Subject Term: COMPUTER simulation; Subject Term: ELECTROMAGNETIC waves; Subject Term: HYPERBOLIC differential equations; Subject Term: TRANSFORMATIONS (Mathematics); Subject Term: FINITE differences; Subject Term: COMPUTATIONAL grids (Computer systems); Author-Supplied Keyword: Finite difference approximations; Author-Supplied Keyword: Hyperbolic exponential fittings; Author-Supplied Keyword: Light beam propagations; Author-Supplied Keyword: Paraxial differential equations; Author-Supplied Keyword: Stretching transformations; Author-Supplied Keyword: Uniform and nonuniform grids; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.compstruc.2008.11.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=39347520&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rolf, James S. AU - Schaubroeck, Beth T1 - Interactive Complex Analysis: Supplementing the Traditional Course with Computer Visualization. JO - Electronic Journal of Mathematics & Technology JF - Electronic Journal of Mathematics & Technology Y1 - 2009/06// VL - 3 IS - 2 M3 - Article SP - 176 EP - 185 SN - 19332823 AB - We present an applet and learning activities used to aid in the visualization and understanding of properties of complex-valued functions. We discuss how the technology can be integrated into a traditional Complex Variables class via exploration, discussion, and regular use. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronic Journal of Mathematics & Technology is the property of Mathematics & Technology, LLC and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPLEX variables KW - INFORMATION technology KW - VISUALIZATION KW - JAVA (Computer program language) KW - GEOMETRIC analysis KW - DIFFERENTIAL equations KW - EXPONENTIAL functions KW - INVERSE functions KW - MAPPINGS (Mathematics) N1 - Accession Number: 44147820; Rolf, James S. 1; Email Address: jim.rolf@usafa.edu Schaubroeck, Beth 1; Email Address: beth.schaubroeck@usafa.edu; Affiliation: 1: Department of Mathematical Sciences, United States Air Force Academy USAFA, CO 80840, USA; Source Info: Jun2009, Vol. 3 Issue 2, p176; Subject Term: COMPLEX variables; Subject Term: INFORMATION technology; Subject Term: VISUALIZATION; Subject Term: JAVA (Computer program language); Subject Term: GEOMETRIC analysis; Subject Term: DIFFERENTIAL equations; Subject Term: EXPONENTIAL functions; Subject Term: INVERSE functions; Subject Term: MAPPINGS (Mathematics); Number of Pages: 10p; Illustrations: 11 Color Photographs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44147820&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jha, S. K. AU - Millwater, H. R. AU - Larsen, J. M. T1 - Probabilistic sensitivity analysis in life-prediction of an α+β titanium alloy. JO - Fatigue & Fracture of Engineering Materials & Structures JF - Fatigue & Fracture of Engineering Materials & Structures Y1 - 2009/06// VL - 32 IS - 6 M3 - Article SP - 493 EP - 504 PB - Wiley-Blackwell SN - 8756758X AB - Probabilistic sensitivities using the score function method are developed for a lifing analysis of an α+β titanium alloy in a round bar under axial fatigue load. Sensitivities with respect to the statistical inputs of the crack initiation size ( a), and Paris crack growth intercept ( C) and exponent ( m) are developed with consideration of the correlation between C and m. The sensitivities are obtained using a single Monte Carlo sampling analysis and do not involve finite difference approximations. The sensitivities indicate the importance of the random variable input parameters on the mean life and standard deviation of life and can be used as a basis for determining constructive data collection efforts. For this example, the crack growth intercept ( C) is the dominant variable that affects mean-life and standard deviation of life, indicating that improved confidence in the results can be obtained most efficiently by improving the statistical characterization of C. [ABSTRACT FROM AUTHOR] AB - Copyright of Fatigue & Fracture of Engineering Materials & Structures is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys -- Fatigue KW - ALLOYS -- Analysis KW - SENSITIVITY analysis KW - FINITE differences KW - STANDARD deviations KW - MONTE Carlo method KW - fatigue variability KW - life prediction KW - probabilistic sensitivities KW - score function method KW - Ti-6Al-2Sn-4Zr-6Mo N1 - Accession Number: 40642435; Jha, S. K. 1; Email Address: sushant.jha@wpafb.af.mil Millwater, H. R. 2 Larsen, J. M. 3; Affiliation: 1: Universal Technology Corporation, Dayton, OH 45432, USA 2: University of Texas at San Antonio, TX 78249, USA 3: US Air Force Research Laboratory, Wright-Patterson-Air Force Base OH 45433, USA; Source Info: Jun2009, Vol. 32 Issue 6, p493; Subject Term: TITANIUM alloys -- Fatigue; Subject Term: ALLOYS -- Analysis; Subject Term: SENSITIVITY analysis; Subject Term: FINITE differences; Subject Term: STANDARD deviations; Subject Term: MONTE Carlo method; Author-Supplied Keyword: fatigue variability; Author-Supplied Keyword: life prediction; Author-Supplied Keyword: probabilistic sensitivities; Author-Supplied Keyword: score function method; Author-Supplied Keyword: Ti-6Al-2Sn-4Zr-6Mo; Number of Pages: 12p; Illustrations: 2 Charts, 9 Graphs; Document Type: Article L3 - 10.1111/j.1460-2695.2009.01352.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=40642435&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cheng-Yen Chen AU - Hsin-Wen Fan AU - Kuo, Spencer P. AU - Jenghwa Chang AU - Pedersen, Todd AU - Mills, Travis J. AU - Cheng-Chiu Huang T1 - Blood Clotting by Low-Temperature Air Plasma. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2009/06//Jun2009 Part 1 of 2 VL - 37 IS - 6 M3 - Article SP - 993 EP - 999 SN - 00933813 AB - In this paper, the feasibility and effectiveness of using an air-plasma torch to clot blood are studied. The emission spectroscopy and temperature measurement of the torch show that the torch produces abundant atomic oxygen in the plasma effluent. Anticoagulated whole-blood samples (10 μl) were tested for two cases: 1) sample exposed to the plasma effluent and 2) sample exposed to a heated airflow; in both cases, the increase of the sample temperature was controlled to be about the same. No indication of blood coagulation was observed in the second case; on the other hand, in the first case when the blood sample was exposed directly to the plasma effluent, a shell was formed on the surface of the blood sample. The experimental results demonstrated that this plasma torch could clot a blood sample via a nonthermal mechanism. The dependence of the degree of blood clotting on the atomic-oxygen flux was demonstrated by varying the exposure distance. Experimental results also showed that blood coagulation was seen in the treated platelet-rich plasma sample but not in the treated platelet-poor plasma sample. Moreover, plasma treatment with multiple short exposures was shown as more effective in clotting blood than that of applying a continuous exposure with the same total exposure time. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BLOOD coagulation KW - LOW temperature plasmas KW - PLASMA (Ionized gases) KW - EMISSION spectroscopy KW - TEMPERATURE measurements KW - AIR flow KW - COAGULATION KW - Atomic-oxygen generation KW - blood coagulation KW - emission spectroscopy KW - plasma torch N1 - Accession Number: 42835925; Cheng-Yen Chen 1; Email Address: cchen26@students.poly.edu Hsin-Wen Fan 1; Email Address: p.sirene@gmail.com Kuo, Spencer P. 1; Email Address: skuo@duke.poly.edu Jenghwa Chang 2; Email Address: Jenghwa.Chang@nyumc.org Pedersen, Todd 3; Email Address: Todd.Pedersen@hanscom.af.mil Mills, Travis J. 3; Email Address: Travis.Mills@hanscom.af.mil Cheng-Chiu Huang 4; Email Address: ch147987@bcm.tmc.edu; Affiliation: 1: Department of Electrical and Computer Engineering, Polytechnic Institute of New York University, Brooklyn, NY 11201 USA 2: Department of Radiation Oncology, NYU Langone Medical Center, New York, NY 10016 USA 3: Space Vehicles Directorate, Air Force Research Laboratory, AFRL/RVBXI, Hanscom AFB, MA 01731 USA 4: Baylor College of Medicine, Houston, TX 77030 USA; Source Info: Jun2009 Part 1 of 2, Vol. 37 Issue 6, p993; Subject Term: BLOOD coagulation; Subject Term: LOW temperature plasmas; Subject Term: PLASMA (Ionized gases); Subject Term: EMISSION spectroscopy; Subject Term: TEMPERATURE measurements; Subject Term: AIR flow; Subject Term: COAGULATION; Author-Supplied Keyword: Atomic-oxygen generation; Author-Supplied Keyword: blood coagulation; Author-Supplied Keyword: emission spectroscopy; Author-Supplied Keyword: plasma torch; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TPS.2009.2016344 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=42835925&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Knighton, W.B. AU - Fortner, E.C. AU - Midey, Anthony J. AU - Viggiano, A.A. AU - Herndon, S.C. AU - Wood, E.C. AU - Kolb, C.E. T1 - HCN detection with a proton transfer reaction mass spectrometer JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2009/06// VL - 283 IS - 1-3 M3 - Article SP - 112 EP - 121 SN - 13873806 AB - Abstract: Proton transfer reaction mass spectrometry (PTR-MS) is a promising technique for making rapid, sensitive measurements of HCN in the atmosphere. However, because the proton affinity of HCN is only slightly greater than that of water, the reverse proton transfer reaction of protonated HCN with water is important and the PTR-MS response to HCN is temperature and humidity dependent. The instrument response of a PTR-MS was calibrated at a variety of HCN mixing ratios, temperatures and relative humidities. A simple model with a kinetic and thermodynamic basis was developed to fit these results and accurately accounted for the temperature and humidity dependence of these measurements. Reaction rate coefficients were determined using a selected ion flow tube mass spectrometer (SIFT). Changes in sensitivity due to variations in temperature and humidity were simply and accurately corrected for using measurable parameters, including the H3O+(H2O) to H3O+ ratio as a measure of the water vapor concentration along with an empirically determined temperature and pressure correction factor. This calibration procedure should be applicable to the quantification of other compounds possessing proton affinities similar to that of HCN such as formaldehyde and hydrogen sulfide. The technique was applied during a two-week ambient measurement period. Analysis of that data suggests that ethene is a spectral interferent. The ethene interference arises due to the presence of O2+, which is generated as an unwanted byproduct as a result of using a low-pressure hollow cathode discharge as an external ion source. O2+ reacts with ethene via charge transfer reaction to form C2H4+, which has the same mass-to-charge ratio as protonated HCN. The magnitude of the ethene interference is estimated at 0.1ppbv HCN equivalent per ppbv of ethene. The ethene interference can be controlled through reducing or eliminating the amount of O2+. HCN concentrations deduced from the ambient measurements after correction for the ethene interference appear reasonable and provide evidence that PTR-MS instruments can be employed for the measurement of HCN. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CYANIDES KW - PROTON transfer reactions KW - CHEMICAL ionization mass spectrometry KW - WATER KW - TEMPERATURE effect KW - THERMODYNAMICS KW - SPECTRAL sensitivity KW - Chemical ionization KW - HCN KW - Proton transfer KW - PTR-MS KW - SIFT N1 - Accession Number: 39784997; Knighton, W.B. 1; Email Address: bknighton@chemistry.montana.edu Fortner, E.C. 1 Midey, Anthony J. 2,3 Viggiano, A.A. 2 Herndon, S.C. 4 Wood, E.C. 4 Kolb, C.E. 4; Affiliation: 1: Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59717, United States 2: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom AFB, MA 01731-3010, United States 3: Institute for Scientific Research, Boston College, Chestnut Hill, MA, United States 4: Aerodyne Research Inc., 45 Manning Road, Billerica, MA 01821-3976, United States; Source Info: Jun2009, Vol. 283 Issue 1-3, p112; Subject Term: CYANIDES; Subject Term: PROTON transfer reactions; Subject Term: CHEMICAL ionization mass spectrometry; Subject Term: WATER; Subject Term: TEMPERATURE effect; Subject Term: THERMODYNAMICS; Subject Term: SPECTRAL sensitivity; Author-Supplied Keyword: Chemical ionization; Author-Supplied Keyword: HCN; Author-Supplied Keyword: Proton transfer; Author-Supplied Keyword: PTR-MS; Author-Supplied Keyword: SIFT; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijms.2009.02.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=39784997&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jefferson, George AU - Parthasarathy, Triplicane A. AU - Kerans, Ronald J. T1 - Tailorable thermal expansion hybrid structures JO - International Journal of Solids & Structures JF - International Journal of Solids & Structures Y1 - 2009/06// VL - 46 IS - 11/12 M3 - Article SP - 2372 EP - 2387 SN - 00207683 AB - Abstract: A design concept is presented for a macro or microstructure that combines materials with differing thermal expansion to achieve an overall effective expansion that differs substantially from either of the constituents. Near-zero-CTE and isotropic negative expansion designs are achieved by creating compliant structures where overall expansion is compensated by internal bending deformation. Such structures have application where dimensional stability is required when subject to large thermal gradients, e.g. space mirrors. In this paper, we present closed form analytic expressions for prediction of the effective expansion, and consequent internal stressing, of the structure, as well as several finite element simulations that demonstrate the design performance under non-uniform thermal load. [Copyright &y& Elsevier] AB - Copyright of International Journal of Solids & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL expansion KW - THERMOPHYSICAL properties KW - COMPLIANT platforms KW - FINITE element method KW - DEFORMATIONS (Mechanics) KW - THERMOELASTICITY KW - Bounds methods KW - Composite structures KW - Finite element analysis KW - Parametric design KW - Tailorable thermal expansion KW - Thermoelasticity N1 - Accession Number: 37349597; Jefferson, George 1; Email Address: george.jefferson@wpafb.af.mil Parthasarathy, Triplicane A. 2 Kerans, Ronald J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLN, Wright–Patterson AFB, OH 45433, USA 2: UES, Inc., Dayton, OH 45432, USA; Source Info: Jun2009, Vol. 46 Issue 11/12, p2372; Subject Term: THERMAL expansion; Subject Term: THERMOPHYSICAL properties; Subject Term: COMPLIANT platforms; Subject Term: FINITE element method; Subject Term: DEFORMATIONS (Mechanics); Subject Term: THERMOELASTICITY; Author-Supplied Keyword: Bounds methods; Author-Supplied Keyword: Composite structures; Author-Supplied Keyword: Finite element analysis; Author-Supplied Keyword: Parametric design; Author-Supplied Keyword: Tailorable thermal expansion; Author-Supplied Keyword: Thermoelasticity; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.ijsolstr.2009.01.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37349597&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Szmulowicz, F. AU - Elhamri, S. AU - Haugan, H. J. AU - Brown, G. J. AU - Mitchel, W. C. T1 - Erratum: “Carrier mobility as a function of carrier density in type-II InAs/GaSb superlattices” [J. Appl. Phys. 105, 074303 (2009)]. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2009/06// VL - 105 IS - 11 M3 - Correction notice SP - 119901 EP - 119901 PB - American Institute of Physics SN - 00218979 AB - A correction is presented for a reference in the article "Carrier mobility as a function of carrier density in type-II InAs/GaSb superlattices" which is in volume 105 of a 2009 issue of this journal. KW - BIBLIOGRAPHICAL citations N1 - Accession Number: 41572984; Szmulowicz, F. 1 Elhamri, S. 2 Haugan, H. J. 3 Brown, G. J. 4 Mitchel, W. C. 4; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469-0178, 2: Department of Physics, University of Dayton, Dayton, Ohio 45469-2314, 3: Universal Technology Corporation, Dayton, Ohio 45432, 4: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: Jun2009, Vol. 105 Issue 11, p119901; Subject Term: BIBLIOGRAPHICAL citations; Number of Pages: 1p; Document Type: Correction notice L3 - 10.1063/1.3137201 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=41572984&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ong, Bruce A. AU - Forester, Joseph AU - Fallot, Andre T1 - Does Influenza Vaccination Improve Pediatric Asthma Outcomes? JO - Journal of Asthma JF - Journal of Asthma Y1 - 2009/06// VL - 46 IS - 5 M3 - Article SP - 477 EP - 480 SN - 02770903 AB - Objective. Controversy exists regarding the effectiveness of influenza vaccination in preventing influenza-related asthma exacerbations in the pediatric population. While yearly influenza immunization is widely recommended for children with asthma, there is currently little evidence to support this practice. Several studies have demonstrated no measurable benefit in asthma outcomes. This study sought to determine whether influenza vaccination status is associated with indicators of asthma morbidity within the military pediatric population. Methods. A survey was conducted of patients 3 to 18 years of age with a diagnosis of asthma enrolled in the pediatric clinics of Brooke Army Medical Center, Fort Sam Houston, Texas, and Wilford Hall Medical Center, Lackland Air Force Base, Texas. Management practices and outcomes for 80 children were evaluated. Data were analyzed using the statistical package SPSS version 12 (SPSS Inc., Chicago). Univariate analyses were performed to identify associations between influenza vaccination, selected demographic variables and asthma exacerbation defined by oral steroid prescription, hospital visits, and unscheduled clinic or emergency department visits for asthma symptoms. Logistic regression analyses were conducted to detect possible confounding variables. Results. In the univariate analyses, current influenza vaccination status was associated with a significant reduction of oral steroid use in the 12 months before the survey. This relationship was appreciated to a lesser extent with emergency department or unscheduled clinic visits in the last 12 months. No significant differences were found regarding the distribution of influenza vaccination status across selected demographic variables. In the multivariate analyses, current influenza vaccination status was independently associated with significantly decreased odds of using oral steroids in the previous 12 months. There was no evidence of confounding or effect modification. Conclusions. This study suggests influenza vaccination is associated with fewer asthma exacerbations. After controlling for several potential confounding variables, administration of influenza vaccine was associated with a protective effect against indicators of asthma exacerbations. Our results indicate that children with asthma in the military beneficiary population may benefit from annual influenza vaccination. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Asthma is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFLUENZA -- Vaccination -- Research KW - ASTHMA in children KW - RESEARCH KW - ASTHMA -- Diagnosis KW - PEDIATRICS KW - IMMUNIZATION KW - LOGISTIC regression analysis KW - asthma KW - immunizations KW - influenza KW - military KW - pediatrics N1 - Accession Number: 41998695; Ong, Bruce A. 1; Email Address: bruce.ong@us.army.mil Forester, Joseph 2 Fallot, Andre 3; Affiliation: 1: Department of Aviation Medicine, Hunter Army Airfield, Savannah, Georgia 2: Department of Pediatrics, US Air Force Academy, USAFA, Colorado 3: Department of Pediatrics, Madigan Army Medical Center, Tacoma, Washington; Source Info: Jun2009, Vol. 46 Issue 5, p477; Subject Term: INFLUENZA -- Vaccination -- Research; Subject Term: ASTHMA in children; Subject Term: RESEARCH; Subject Term: ASTHMA -- Diagnosis; Subject Term: PEDIATRICS; Subject Term: IMMUNIZATION; Subject Term: LOGISTIC regression analysis; Author-Supplied Keyword: asthma; Author-Supplied Keyword: immunizations; Author-Supplied Keyword: influenza; Author-Supplied Keyword: military; Author-Supplied Keyword: pediatrics; Number of Pages: 4p; Illustrations: 2 Charts; Document Type: Article L3 - 10.1080/02770900902795538 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=41998695&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Streltsov, Anatoly AU - Mishin, Evgeny AU - Joyce, Glenn T1 - Nonlinear interaction of broadband whistler waves with energetic electrons JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2009/06// VL - 71 IS - 8/9 M3 - Article SP - 897 EP - 904 SN - 13646826 AB - Abstract: We study nonlinear interaction between whistler-mode waves and energetic electrons by self-consistent simulation model in a homogeneous magnetic field. Unlike most previous simulations, the model accounts for a wideband wave spectrum to study the effect of the initial pump wave on the generation of whistlers by a weakly unstable background distribution. When the pump/trigger wave lies in the linearly unstable range, neighboring (secondary) waves grow significantly faster than in the linear regime. That is, the pump wave facilitates the initial growth of secondary waves, thereby shortening the transition into the nonlinear regime. The initial wave–particle dynamics is explained by the formation of sharp gradients in velocity space inside the trapping region of the pump wave, facilitating the generation of broadband secondary waves. This is consistent with the widening of the amplified very-low-frequency (VLF) signal near the magnetic equator just before triggering. The pump amplitude starts to increase when the neighboring harmonics become strong enough to cause electron trapping. The saturated amplitudes, which are above the initial pump amplitude, are virtually independent of the latter. The resulting wave spectra consist of multiple peaks. The fact that the peaks are not a numerical artifact is demonstrated by additional simulations with different numbers of grid cells and hot particles per cell. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVE packets KW - WHISTLERS (Radio meteorology) KW - SIMULATION methods & models KW - MAGNETIC fields KW - SHEAR waves KW - VLF emissions KW - Broadband wave packet KW - Nonlinear whistler wave–electron interaction KW - Secondary VLF emissions N1 - Accession Number: 41244258; Streltsov, Anatoly 1; Email Address: streltsov@dartmouth.edu Mishin, Evgeny 2; Email Address: evgeny.mishin@hanscom.af.mil Joyce, Glenn 3; Email Address: glenn.joyce@nrl.navy.mil; Affiliation: 1: Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA 2: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA 3: Department of Astronomy, University of Maryland, College Park, MD 20742, USA; Source Info: Jun2009, Vol. 71 Issue 8/9, p897; Subject Term: WAVE packets; Subject Term: WHISTLERS (Radio meteorology); Subject Term: SIMULATION methods & models; Subject Term: MAGNETIC fields; Subject Term: SHEAR waves; Subject Term: VLF emissions; Author-Supplied Keyword: Broadband wave packet; Author-Supplied Keyword: Nonlinear whistler wave–electron interaction; Author-Supplied Keyword: Secondary VLF emissions; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jastp.2009.02.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=41244258&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haverluk, T. J. T1 - Latinos in America: Philosophy and Social Identity. JO - Journal of Latin American Geography JF - Journal of Latin American Geography Y1 - 2009/06// VL - 8 IS - 2 M3 - Book Review SP - 242 EP - 244 PB - University of Texas Press SN - 15452476 AB - The article reviews the book "Latinos in America: Philosophy and Social Identity," by Jorge J. Gracia. KW - LATIN Americans -- United States KW - NONFICTION KW - GRACIA, Jorge J. KW - LATINOS in America: Philosophy & Social Identity (Book) N1 - Accession Number: 44726718; Haverluk, T. J. 1; Affiliation: 1: United States Air Force Academy; Source Info: 2009, Vol. 8 Issue 2, p242; Subject Term: LATIN Americans -- United States; Subject Term: NONFICTION; Reviews & Products: LATINOS in America: Philosophy & Social Identity (Book); People: GRACIA, Jorge J.; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44726718&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brungart, Douglas S. AU - Chang, Peter S. AU - Simpson, Brian D. AU - Wang, DeLiang T1 - Multitalker speech perception with ideal time-frequency segregation: Effects of voice characteristics and number of talkers. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2009/06// VL - 125 IS - 6 M3 - Article SP - 4006 EP - 4022 SN - 00014966 AB - When a target voice is masked by an increasingly similar masker voice, increases in energetic masking are likely to occur due to increased spectro-temporal overlap in the competing speech waveforms. However, the impact of this increase may be obscured by informational masking effects related to the increased confusability of the target and masking utterances. In this study, the effects of target-masker similarity and the number of competing talkers on the energetic component of speech-on-speech masking were measured with an ideal time-frequency segregation (ITFS) technique that retained all the target-dominated time-frequency regions of a multitalker mixture but eliminated all the time-frequency regions dominated by the maskers. The results show that target-masker similarity has a small but systematic impact on energetic masking, with roughly a 1 dB release from masking for same-sex maskers versus same-talker maskers and roughly an additional 1 dB release from masking for different-sex masking voices. The results of a second experiment measuring ITFS performance with up to 18 interfering talkers indicate that energetic masking increased systematically with the number of competing talkers. These results suggest that energetic masking differences related to target-masker similarity have a much smaller impact on multitalker listening performance than energetic masking effects related to the number of competing talkers in the stimulus and non-energetic masking effects related to the confusability of the target and masking voices. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPEECH perception KW - AUDIO frequency KW - VOICE frequency KW - AUDITORY masking KW - DECIBELS KW - ORAL communication KW - AUDITORY perception KW - AUDIOLOGY KW - SOUND measurement N1 - Accession Number: 40925783; Brungart, Douglas S. 1; Email Address: douglas.brungart@wpafb.af.mil Chang, Peter S. 2 Simpson, Brian D. 1 Wang, DeLiang 3; Affiliation: 1: Air Force Research Laboratory, Human Effectiveness Directorate, 2610 Seventh Street, Wright-Patterson AFB, Ohio 45433. 2: Department of Computer Science and Engineering, The Ohio State University, Columbus, Ohio 43210. 3: Department of Computer Science and Engineering and Center for Cognitive Science, The Ohio State University, Columbus, Ohio 43210.; Source Info: Jun2009, Vol. 125 Issue 6, p4006; Subject Term: SPEECH perception; Subject Term: AUDIO frequency; Subject Term: VOICE frequency; Subject Term: AUDITORY masking; Subject Term: DECIBELS; Subject Term: ORAL communication; Subject Term: AUDITORY perception; Subject Term: AUDIOLOGY; Subject Term: SOUND measurement; Number of Pages: 17p; Illustrations: 1 Black and White Photograph, 3 Charts, 5 Graphs; Document Type: Article L3 - 10.1121/1.3117686 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=40925783&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, Bradley E. AU - Chen, Weinong AU - Song, Bo AU - Akers, Stephen A. T1 - Moisture effects on the high strain-rate behavior of sand JO - Mechanics of Materials JF - Mechanics of Materials Y1 - 2009/06// VL - 41 IS - 6 M3 - Article SP - 786 EP - 798 SN - 01676636 SN - 9780077221409 AB - Abstract: The effects of moisture content on the high strain-rate mechanical properties of fine grain sand were characterized with a split-Hopkinson pressure bar. A controlled loading pulse allowed the sample to acquire stress equilibrium and a constant strain-rate of 400s−1. The sand specimen confined in a hardened steel tube, had a dry density of 1.50g/cm3 with moisture contents varied from 3% to 20% by weight. Experimental results indicate that partially saturated sand is more compressible than dry sand with the softest behavior observed at 7% moisture content. The softening of the partially saturated sand may occur due to the pore water acting as a lubricant between the sand particles. Similar trends were reported in the quasi-static regime for experiments conducted at comparable specimen conditions. [Copyright &y& Elsevier] AB - Copyright of Mechanics of Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SAND KW - STRAINS & stresses (Mechanics) KW - SHEAR (Mechanics) KW - MOISTURE N1 - Accession Number: 38317863; Martin, Bradley E. 1; Email Address: bradley.martin@eglin.af.mil Chen, Weinong 2 Song, Bo 3 Akers, Stephen A. 4; Affiliation: 1: Air Force Research Laboratory, Eglin AFB, FL 32542, USA 2: Department of Aeronautics and Astronautics Engineering, Purdue University, West Lafayette, IN 47907, USA 3: Sandia National Labs, Livermore, CA 94550, USA 4: U.S. Army Engineering Research and Development Center, Vicksburg, MS 39180, USA; Source Info: Jun2009, Vol. 41 Issue 6, p786; Subject Term: SAND; Subject Term: STRAINS & stresses (Mechanics); Subject Term: SHEAR (Mechanics); Subject Term: MOISTURE; NAICS/Industry Codes: 484222 Dry bulk materials trucking, local; NAICS/Industry Codes: 416390 Other specialty-line building supplies merchant wholesalers; NAICS/Industry Codes: 484232 Dry bulk materials trucking, long distance; NAICS/Industry Codes: 423320 Brick, Stone, and Related Construction Material Merchant Wholesalers; NAICS/Industry Codes: 212321 Construction Sand and Gravel Mining; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.mechmat.2009.01.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38317863&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Al-Safi, Saafan A. AU - Ayoub, Nehad M. AU - Alkofahi, Ahmad S. AU - Aboul-Enein, Faisal H. AU - Aboul-Enein, Basil H. T1 - Treatment of obesity by herbal mixtures containing CNS stimulants: Public awareness on the possible harmful effects. JO - Texas Public Health Journal JF - Texas Public Health Journal Y1 - 2009///Summer2009 VL - 61 IS - 3 M3 - Article SP - 16 EP - 21 AB - The article examines the level of public awareness regarding the possible harmful effects associated with herbal mixtures containing central nervous system (CNS) stimulants to lose weight. It reveals nervousness is associated with the administration of CNS stimulants-containing herbs. It concludes on the need to increase the level of public awareness regarding harmful adverse events associated with the consumption of herbal products containing CNS stimulants. KW - CENTRAL nervous system stimulants KW - WEIGHT loss preparations KW - HEALTH products KW - HERBAL medicine KW - APPETITE stimulants KW - Central nervous system (CNS) stimulants KW - ephedrine KW - herbal mixtures KW - obesity KW - public N1 - Accession Number: 43639536; Al-Safi, Saafan A. 1 Ayoub, Nehad M. 1 Alkofahi, Ahmad S. 2 Aboul-Enein, Faisal H. 3 Aboul-Enein, Basil H. 4; Affiliation: 1: Department of Clinical Pharmacy, Jordan University of Science & Technology P.O. Box 3030, Irbid 22110, Jordan. Texas Woman's University, College of Nursing, 6700 Fannin, Houston TX 77030, USA 2: Department of Medicinal Chemistry and Pharmacognosy, Jordan University of Science & Technology P.O. Box 3030, Irbid 22110, Jordan. Texas Woman's University, College of Nursing, 6700 Fannin, Houston TX 77030, USA 3: Faculty of Pharmacy, Jordan University of Science & Technology P.O. Box 3030, Irbid 22110, Jordan. Texas Woman's University, College of Nursing, 6700 Fannin, Houston TX 77030, USA 4: United States Air Force, Public Health Officer, 14th Medical Squadron (AETC), Columbus MS 39705, USA; Source Info: Summer2009, Vol. 61 Issue 3, p16; Subject Term: CENTRAL nervous system stimulants; Subject Term: WEIGHT loss preparations; Subject Term: HEALTH products; Subject Term: HERBAL medicine; Subject Term: APPETITE stimulants; Author-Supplied Keyword: Central nervous system (CNS) stimulants; Author-Supplied Keyword: ephedrine; Author-Supplied Keyword: herbal mixtures; Author-Supplied Keyword: obesity; Author-Supplied Keyword: public; NAICS/Industry Codes: 446191 Food (Health) Supplement Stores; NAICS/Industry Codes: 424210 Drugs and Druggists' Sundries Merchant Wholesalers; NAICS/Industry Codes: 446110 Pharmacies and Drug Stores; NAICS/Industry Codes: 325411 Medicinal and Botanical Manufacturing; Number of Pages: 6p; Illustrations: 5 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43639536&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Balasubramanyam, A. AU - Sailaja, N. AU - Mahboob, M. AU - Rahman, M.F. AU - Misra, S. AU - Hussain, Saber M. AU - Grover, Paramjit T1 - Evaluation of genotoxic effects of oral exposure to Aluminum oxide nanomaterials in rat bone marrow JO - Mutation Research/Genetic Toxicology & Environmental Mutagenesis JF - Mutation Research/Genetic Toxicology & Environmental Mutagenesis Y1 - 2009/05/31/ VL - 676 IS - 1/2 M3 - Article SP - 41 EP - 47 SN - 13835718 AB - Abstract: Nanomaterials have novel properties and functions because of their small size. The unique nature of nanomaterials may be associated with potentially toxic effects. The aim of this study was to evaluate the in vivo genotoxicity of rats exposed with Aluminum oxide nanomaterials. Hence in the present study, the genotoxicity of Aluminum oxide nanomaterials (30 and 40nm) and its bulk material was studied in bone marrow of female Wistar rats using chromosomal aberration and micronucleus assays. The rats were administered orally with the doses of 500, 1000 and 2000mg/kg bw. Statistically significant genotoxicity was observed with Aluminum oxide 30 and 40nm with micronucleus as well as chromosomal aberration assays. Significantly (p <0.05 or p <0.001) increased frequency of MN was observed with 1000 and 2000mg/kg bw dose levels of Aluminum oxide 30nm (9.4±1.87 and 15.2±2.3, respectively) and Aluminum oxide 40nm (8.1±1.8 and 13.9±2.21, respectively) over control (2.5±0.7) at 30h. Likewise, at 48h sampling time a significant (p <0.05 or p <0.001) increase in frequency of MN was evident at 1000 and 2000mg/kg bw dose levels of Aluminum oxide 30nm (10.6±1.68 and 16.6±2.66, respectively) and Aluminum oxide 40nm (9.0±1.38 and 14.7±1.68, respectively) compared to control (1.8±0.75). Significantly increased frequencies (p <0.05 or p <0.001) of chromosomal aberrations were observed with Aluminum oxide 30nm (1000 and 2000mg/kg bw) and Aluminum oxide 40nm (2000mg/kg bw) in comparison to control at 18 and 24h. Further, since there is need for information on the toxicokinetics of nanomaterials, determination of these properties of the nanomaterials was carried out in different tissues, urine and feces using inductively coupled plasma mass spectrometry (ICP–MS). A significant size dependent accumulation of Aluminum oxide nanomaterials occurred in different tissues, urine and feces of rats as shown by ICP–MS data. The results of our study suggest that exposure to Aluminum oxide nanomaterials has the potential to cause genetic damage. [Copyright &y& Elsevier] AB - Copyright of Mutation Research/Genetic Toxicology & Environmental Mutagenesis is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GENETIC toxicology KW - ALUMINUM oxide KW - NANOSTRUCTURED materials KW - METALS in medicine KW - RATS as laboratory animals KW - BONE marrow KW - CHROMOSOMES KW - ADMINISTRATION of drugs KW - DOSAGE of drugs KW - Aluminum oxide KW - Chromosomal aberrations assay KW - Genotoxicity KW - Micronucleus test KW - Nanomaterials KW - Rat N1 - Accession Number: 40637094; Balasubramanyam, A. 1 Sailaja, N. 1 Mahboob, M. 1 Rahman, M.F. 1 Misra, S. 1 Hussain, Saber M. 2 Grover, Paramjit 1; Email Address: grover@iict.res.in; Affiliation: 1: Toxicology Unit, Biology Division, Indian Institute of Chemical Technology, Hyderabad 500 607, Andhra Pradesh, India 2: Applied Biotechnology, Air Force Research Laboratory/HEPB, Wright-Patterson, AFB, OH, USA; Source Info: May2009, Vol. 676 Issue 1/2, p41; Subject Term: GENETIC toxicology; Subject Term: ALUMINUM oxide; Subject Term: NANOSTRUCTURED materials; Subject Term: METALS in medicine; Subject Term: RATS as laboratory animals; Subject Term: BONE marrow; Subject Term: CHROMOSOMES; Subject Term: ADMINISTRATION of drugs; Subject Term: DOSAGE of drugs; Author-Supplied Keyword: Aluminum oxide; Author-Supplied Keyword: Chromosomal aberrations assay; Author-Supplied Keyword: Genotoxicity; Author-Supplied Keyword: Micronucleus test; Author-Supplied Keyword: Nanomaterials; Author-Supplied Keyword: Rat; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.mrgentox.2009.03.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=40637094&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hu, J.J. AU - Bultman, J.E. AU - Muratore, C. AU - Phillips, B.S. AU - Zabinski, J.S. AU - Voevodin, A.A. T1 - Tribological properties of pulsed laser deposited Mo–S–Te composite films at moderate high temperatures JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2009/05/30/ VL - 203 IS - 16 M3 - Article SP - 2322 EP - 2327 SN - 02578972 AB - Abstract: Tribological investigations of Mo–S–Te composite films were conducted on films grown at room temperature by pulsed laser deposition. The chemistry and microstructure of the films were characterized by X-ray diffraction, scanning electron microscopy, X-ray energy dispersive spectroscopy, and micro Raman spectroscopy. The films showed a granular morphology and a preferred basal plane growth of 2H-MoS2 parallel to the substrate after annealing at high temperatures. The friction coefficients of the films were 0.05 at 300 °C and 0.10 at 450 °C for more than 10,000 cycles in air. Smeared hexagonal MoS2 lubricant films were observed inside wear tracks while the tribochemical formation of wear debris occurred both inside and outside the wear tracks. The Te additives for increasing the film durability were proposed to slow oxidation of the lubricants at elevated temperatures by thermally-induced tellurium migration to the surface and the subsequent formation of the Te diffusion barrier. This mechanism could be significantly effective in high-temperature tribotests because of the increased tellurium mobility at high temperatures. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films -- Mechanical properties KW - PULSED laser deposition KW - TRIBOLOGY KW - X-ray diffraction KW - SCANNING electron microscopy KW - RAMAN spectroscopy KW - Friction KW - High temperature KW - Mo–S–Te composite film KW - Pulsed laser deposition KW - Solid lubricant KW - Tribology N1 - Accession Number: 37572222; Hu, J.J.; Email Address: Jianjun.Hu@WPAFB.AF.MIL Bultman, J.E. 1 Muratore, C. 1 Phillips, B.S. 1 Zabinski, J.S. 1 Voevodin, A.A. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory (AFRL/RXBT), Wright-Patterson Air Force Base, Dayton, Ohio 45433-7750, United States; Source Info: May2009, Vol. 203 Issue 16, p2322; Subject Term: THIN films -- Mechanical properties; Subject Term: PULSED laser deposition; Subject Term: TRIBOLOGY; Subject Term: X-ray diffraction; Subject Term: SCANNING electron microscopy; Subject Term: RAMAN spectroscopy; Author-Supplied Keyword: Friction; Author-Supplied Keyword: High temperature; Author-Supplied Keyword: Mo–S–Te composite film; Author-Supplied Keyword: Pulsed laser deposition; Author-Supplied Keyword: Solid lubricant; Author-Supplied Keyword: Tribology; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.surfcoat.2009.02.057 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37572222&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Settersten, Thomas B. AU - Patterson, Brian D. AU - Carter, Campbell D. T1 - Collisional quenching of NO A 2Σ+(v′=0) between 125 and 294 K. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2009/05/28/ VL - 130 IS - 20 M3 - Article SP - 204302 PB - American Institute of Physics SN - 00219606 AB - We report measurements of the temperature-dependent cross sections for the quenching of fluorescence from the A 2Σ+(v′=0) state of NO for temperatures between 125 and 294 K. Thermally averaged cross sections were measured for quenching by NO(X 2Π), N2, O2, and CO in a cryogenically cooled gas flow cell. Picosecond laser-induced fluorescence was time resolved, and the thermally averaged quenching cross sections were determined from the dependence of the fluorescence decay rate on the quencher-gas pressure. These measurements extend to lower temperature the range of previously published results for NO and O2 and constitute the first reported measurements of the N2 and CO cross sections for temperatures below 294 K. Between 125 and 294 K, a negative temperature dependence is observed for quenching by NO, O2, and CO, implicating collision-complex formation in all three cases. Over the same temperature range, a constant, nonzero cross section is measured for quenching by N2. Updated empirical models for the temperature dependence of the cross sections between 125 and 4500 K are recommended based on weighted least-squares fits to the current low-temperature results and previously published measurements at higher temperature. The results of over 250 measurements presented here indicate that the collisionless lifetime of NO A 2Σ+(v′=0) is approximately 192 ns. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLISIONS (Nuclear physics) KW - FLUORESCENCE KW - ULTRASHORT laser pulses KW - CROSS sections (Nuclear physics) KW - NUCLEAR physics N1 - Accession Number: 40638013; Settersten, Thomas B. 1; Email Address: tbsette@sandia.gov Patterson, Brian D. 1 Carter, Campbell D. 2; Affiliation: 1: Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, USA. 2: Air Force Research Laboratory, AFRL/RZA Wright-Patterson Air Force Base, Ohio 45433, USA.; Source Info: 5/28/2009, Vol. 130 Issue 20, p204302; Subject Term: COLLISIONS (Nuclear physics); Subject Term: FLUORESCENCE; Subject Term: ULTRASHORT laser pulses; Subject Term: CROSS sections (Nuclear physics); Subject Term: NUCLEAR physics; Number of Pages: 10p; Illustrations: 1 Diagram, 4 Charts, 7 Graphs; Document Type: Article L3 - 10.1063/1.3138178 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=40638013&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shalin J. Jhaveri AU - Jesse D. McMullen AU - Rint Sijbesma AU - Loon-Seng Tan AU - Warren Zipfel AU - Christopher K. Ober T1 - Direct Three-Dimensional Microfabrication of Hydrogels via Two-Photon Lithography in Aqueous Solution. JO - Chemistry of Materials JF - Chemistry of Materials Y1 - 2009/05/26/ VL - 21 IS - 10 M3 - Article SP - 2003 EP - 2006 SN - 08974756 AB - Two-photon lithography was used to microfabricate hydrogels (see figure) directly in aqueous solution using non-ionic surfactant as a dispersant for large two-photon absorption cross-section hydrophobic chromophores. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemistry of Materials is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROGELS KW - MICROFABRICATION KW - LITHOGRAPHY KW - SOLUTION (Chemistry) KW - SURFACE active agents KW - ABSORPTION KW - PHOTONS N1 - Accession Number: 39989675; Shalin J. Jhaveri 1 Jesse D. McMullen 1 Rint Sijbesma 1 Loon-Seng Tan 1 Warren Zipfel 1 Christopher K. Ober 1; Affiliation: 1: Department of Materials Science and Engineering, Department of Chemistry and Chemical Biology, and Department of Applied Engineering and Physics, Cornell University, Ithaca, New York 14853, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven 5600 MB, The Netherlands, and Nanostructured & Biological Materials Branch, United States Air Force Research Laboratory, Dayton, Ohio 45433; Source Info: May2009, Vol. 21 Issue 10, p2003; Subject Term: HYDROGELS; Subject Term: MICROFABRICATION; Subject Term: LITHOGRAPHY; Subject Term: SOLUTION (Chemistry); Subject Term: SURFACE active agents; Subject Term: ABSORPTION; Subject Term: PHOTONS; NAICS/Industry Codes: 323119 Other printing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=39989675&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - David M. Hess AU - Rajesh R. Naik AU - Carlos Rinaldi AU - Melanie M. Tomczak AU - James J. Watkins T1 - Fabrication of Ordered Mesoporous Silica Films with Encapsulated Iron Oxide Nanoparticles using Ferritin-Doped Block Copolymer Templates. JO - Chemistry of Materials JF - Chemistry of Materials Y1 - 2009/05/26/ VL - 21 IS - 10 M3 - Article SP - 2125 EP - 2129 SN - 08974756 AB - Ordered mesoporous silica glasses containing encapsulated magnetic nanoparticles were fabricated by the 3D replication of preorganized block copolymer templates doped with ferritin. Solutions of Pluronic F127 (PEO105-PPO70-PEO105) containing horse spleen ferritin and p-toluene sulfonic acid were spin-coated onto silicon test wafers. Phase selective deposition of silica within the ferritin-containing block copolymer was conducted by exposure of the template films to solutions of tetraethylorthosilicate in supercritical carbon dioxide. Silica network formation occurs exclusively in the hydrophilic block due to partitioning of the acid catalyst to the PEO rich domains during spin coating. Calcination of the resultant composite at 400 °C removes the polymer template and protein shell of the ferritin nanoparticles, yielding a robust mesoporous film as evidenced by electron microscopy. X-ray diffraction showed that after processing the crystalline structure of the iron oxide ferritin core was maintained. Magnetization measurements indicate that the magnetic properties of the ferritin cores are unaffected by the silica infusion and calcination steps. This approach provides a simple and general way to fabricate functionalized mesoporous materials with defined pore structures. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemistry of Materials is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MESOPOROUS materials KW - SILICA KW - THIN films KW - IRON oxides KW - NANOPARTICLES KW - FERRITIN KW - BLOCK copolymers KW - CHEMICAL templates KW - MICROENCAPSULATION N1 - Accession Number: 39989682; David M. Hess 1 Rajesh R. Naik 1 Carlos Rinaldi 1 Melanie M. Tomczak 1 James J. Watkins 1; Affiliation: 1: Department of Chemical Engineering and Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, Air Force Research Laboratory,Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Dayton, Ohio 45433-7702, and Department of Chemical Engineering, University of Puerto Rico, Mayagüez, PR 00681; Source Info: May2009, Vol. 21 Issue 10, p2125; Subject Term: MESOPOROUS materials; Subject Term: SILICA; Subject Term: THIN films; Subject Term: IRON oxides; Subject Term: NANOPARTICLES; Subject Term: FERRITIN; Subject Term: BLOCK copolymers; Subject Term: CHEMICAL templates; Subject Term: MICROENCAPSULATION; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=39989682&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Spicer, Chester W. AU - Holdren, Michael W. AU - Cowen, Kenneth A. AU - Joseph, Darrell W. AU - Satola, Jan AU - Goodwin, Bradley AU - Mayfield, Howard AU - Laskin, Alexander AU - Lizabeth Alexander, M. AU - Ortega, John V. AU - Newburn, Matthew AU - Kagann, Robert AU - Hashmonay, Ram T1 - Rapid measurement of emissions from military aircraft turbine engines by downstream extractive sampling of aircraft on the ground: Results for C-130 and F-15 aircraft JO - Atmospheric Environment JF - Atmospheric Environment Y1 - 2009/05/21/ VL - 43 IS - 16 M3 - Article SP - 2612 EP - 2622 SN - 13522310 AB - Aircraft emissions affect air quality on scales from local to global. More than 20% of the jet fuel used in the U.S. is consumed by military aircraft, and emissions from this source are facing increasingly stringent environmental regulations, so improved methods for quickly and accurately determining emissions from existing and new engines are needed. This paper reports results of a study to advance the methods used for detailed characterization of military aircraft emissions, and provides emission factors for two aircraft: the F-15 fighter and the C-130 cargo plane. The measurements involved outdoor ground-level sampling downstream behind operational military aircraft. This permits rapid change-out of the aircraft so that engines can be tested quickly on operational aircraft. Measurements were made at throttle settings from idle to afterburner using a simple extractive probe in the dilute exhaust. Emission factors determined using this approach agree very well with those from the traditional method of extractive sampling at the exhaust exit. Emission factors are reported for CO2, CO, NO, NO x , and more than 60 hazardous and/or reactive organic gases. Particle size, mass and composition also were measured and are being reported separately. Comparison of the emissions of nine hazardous air pollutants from these two engines with emissions from nine other aircraft engines is discussed. [Copyright &y& Elsevier] AB - Copyright of Atmospheric Environment is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMISSIONS (Air pollution) KW - AIRCRAFT gas turbines KW - HERCULES (Turboprop transports) KW - BLACK Widow (Night fighter plane) KW - AIR pollution -- Measurement KW - AIR pollution monitoring KW - CARBON dioxide -- Environmental aspects KW - CARBON monoxide -- Environmental aspects KW - NITRIC oxide -- Environmental aspects KW - Afterburner emissions KW - Emission factor KW - Emission index KW - Hazardous air pollutants KW - Jet engine emissions KW - Military aircraft KW - Turbine engine N1 - Accession Number: 37824185; Spicer, Chester W. 1; Email Address: spiceair@columbus.rr.com Holdren, Michael W. 2 Cowen, Kenneth A. 3 Joseph, Darrell W. 3 Satola, Jan 3 Goodwin, Bradley 3 Mayfield, Howard 4 Laskin, Alexander 5 Lizabeth Alexander, M. 5 Ortega, John V. 6 Newburn, Matthew 5 Kagann, Robert 7 Hashmonay, Ram 7; Affiliation: 1: SpiceAir Consulting, 2703 Mt. Holyoke Rd., Columbus, OH 43221, USA 2: Scientific Consulting, 4781 Teter Ct., Columbus, OH 4320, USA 3: Battelle, 505 King Ave., Columbus, OH 43201, USA 4: Air Force Research Laboratory, 139 Barnes Dr., Tyndall AFB, FL 32403, USA 5: Environmental Molecular Science Laboratory, Pacific Northwest National Laboratory, 902 Battelle Blvd., Richland, WA 99352, USA 6: University of Colorado, Boulder, CO 80309, USA 7: Arcadis G&M, Durham, NC 27713, USA; Source Info: May2009, Vol. 43 Issue 16, p2612; Subject Term: EMISSIONS (Air pollution); Subject Term: AIRCRAFT gas turbines; Subject Term: HERCULES (Turboprop transports); Subject Term: BLACK Widow (Night fighter plane); Subject Term: AIR pollution -- Measurement; Subject Term: AIR pollution monitoring; Subject Term: CARBON dioxide -- Environmental aspects; Subject Term: CARBON monoxide -- Environmental aspects; Subject Term: NITRIC oxide -- Environmental aspects; Author-Supplied Keyword: Afterburner emissions; Author-Supplied Keyword: Emission factor; Author-Supplied Keyword: Emission index; Author-Supplied Keyword: Hazardous air pollutants; Author-Supplied Keyword: Jet engine emissions; Author-Supplied Keyword: Military aircraft; Author-Supplied Keyword: Turbine engine; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.atmosenv.2009.02.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37824185&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Salem, A.A. AU - Semiatin, S.L. T1 - Anisotropy of the hot plastic deformation of Ti–6Al–4V single-colony samples JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2009/05/20/ VL - 508 IS - 1/2 M3 - Article SP - 114 EP - 120 SN - 09215093 AB - Abstract: The critical resolved shear stresses (CRSSs) and flow curves for the seven possible slip systems in Ti–6Al–4V with a lamellar microstructure were determined via high-temperature uniaxial compression testing. For this purpose, samples with a rectangular cross section were cut from single colonies grown using a float-zone technique and then tested at 815°C. Each sample was oriented for single slip along one of seven different slip systems in the alpha phase; i.e., one of the three (prism 〈a〉), the three (basal 〈a〉), or the 〈c + a〉 (pyramidal) systems was activated by orienting specific samples to have the highest Schmid factor on that particular system. Measurements of the CRSS at yielding and the subsequent flow behavior revealed a strong dependence of mechanical behavior on colony orientation/activated slip system. The anisotropy in the CRSS and the tendency for flow softening at large strains was rationalized on the basis of the Burgers orientation relationship between the alpha (hcp) lamellae and the beta (bcc) matrix and hence the orientation of alpha slip directions relative to those in the beta phase. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM-aluminum-vanadium alloys KW - DEFORMATIONS (Mechanics) KW - ANISOTROPY KW - HIGH temperatures KW - STRAINS & stresses (Mechanics) KW - SHEAR (Mechanics) KW - COMPRESSIBILITY KW - METALS -- Testing KW - Critical resolved shear stress KW - Deformation mechanisms KW - High temperature KW - Single-colony KW - Ti–6Al–4V N1 - Accession Number: 37229989; Salem, A.A.; Email Address: ayman.salem@wpafb.af.mil Semiatin, S.L. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLM, Wright-Patterson AFB, OH 45433-7817, United States of America; Source Info: May2009, Vol. 508 Issue 1/2, p114; Subject Term: TITANIUM-aluminum-vanadium alloys; Subject Term: DEFORMATIONS (Mechanics); Subject Term: ANISOTROPY; Subject Term: HIGH temperatures; Subject Term: STRAINS & stresses (Mechanics); Subject Term: SHEAR (Mechanics); Subject Term: COMPRESSIBILITY; Subject Term: METALS -- Testing; Author-Supplied Keyword: Critical resolved shear stress; Author-Supplied Keyword: Deformation mechanisms; Author-Supplied Keyword: High temperature; Author-Supplied Keyword: Single-colony; Author-Supplied Keyword: Ti–6Al–4V; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.msea.2008.12.035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37229989&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Collins, P.C. AU - Welk, B. AU - Searles, T. AU - Tiley, J. AU - Russ, J.C. AU - Fraser, H.L. T1 - Development of methods for the quantification of microstructural features in α+β-processed α/β titanium alloys JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2009/05/20/ VL - 508 IS - 1/2 M3 - Article SP - 174 EP - 182 SN - 09215093 AB - Abstract: A set of stereological procedures has been developed for the rigorous quantification of microstructural features resolvable using scanning electron microscopy in α+β-processed α/β titanium alloys. This paper identifies the four microstructural features that most likely influence the mechanical properties in α+β-processed titanium alloy, including: the size of the equiaxed alpha, the volume fraction of the equiaxed alpha, the volume fraction of total alpha, and the thickness of the Widmanstätten alpha laths. The details regarding the quantification methodologies are provided, as are the origins of the associated uncertainties. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - TITANIUM alloys KW - METALS -- Mechanical properties KW - THICKNESS measurement KW - STEREOLOGY KW - SCANNING electron microscopy KW - Microstructural quantification KW - Stereology KW - Titanium N1 - Accession Number: 37229998; Collins, P.C. 1; Email Address: collins.457@osu.edu Welk, B. 1 Searles, T. 2 Tiley, J. 3 Russ, J.C. 4 Fraser, H.L. 1; Affiliation: 1: Center for the Accelerated Maturation of Materials, Department of Materials Science & Engineering, The Ohio State University, 2041 College Road, Columbus, OH 43210, USA 2: Rolls Royce Company, Indianapolis, IN, USA 3: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright -Patterson Air Force Base, Dayton, OH, USA 4: North Carolina State University, Raleigh, NC, USA; Source Info: May2009, Vol. 508 Issue 1/2, p174; Subject Term: MICROSTRUCTURE; Subject Term: TITANIUM alloys; Subject Term: METALS -- Mechanical properties; Subject Term: THICKNESS measurement; Subject Term: STEREOLOGY; Subject Term: SCANNING electron microscopy; Author-Supplied Keyword: Microstructural quantification; Author-Supplied Keyword: Stereology; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.msea.2008.12.038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37229998&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ivasishin, O.M. AU - Shevchenko, S.V. AU - Semiatin, S.L. T1 - Implementation of exact grain-boundary geometry into a 3-D Monte-Carlo (Potts) model for microstructure evolution JO - Acta Materialia JF - Acta Materialia Y1 - 2009/05/15/ VL - 57 IS - 9 M3 - Article SP - 2834 EP - 2844 SN - 13596454 AB - Abstract: A three-dimensional Monte-Carlo (Potts) model was modified to incorporate the effect of grain-boundary inclination on boundary mobility. For this purpose, a straightforward geometric construction was developed to determine the local orientation of the grain-boundary plane. The combined effects of grain-boundary plane and misorientation on the effective grain-boundary mobility were incorporated into the Monte-Carlo code using the definition of the tilt–twist component. The modified code was validated by simulating grain growth in microstructures comprising equiaxed or elongated grains as well as the static recrystallization of a microstructure of deformed (elongated) grains. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL grain boundaries KW - MONTE Carlo method KW - MICROSTRUCTURE KW - RECRYSTALLIZATION (Metallurgy) KW - DEFORMATIONS (Mechanics) KW - CRYSTAL growth KW - Grain growth KW - Grain-boundary inclination KW - Monte-Carlo technique KW - Recrystallization N1 - Accession Number: 38331457; Ivasishin, O.M. 1 Shevchenko, S.V. 1 Semiatin, S.L. 2; Email Address: lee.semiatin@wpafb.af.mil; Affiliation: 1: Institute for Metal Physics, 36 Vernadsky Str., 03142 Kiev, Ukraine 2: Air Force Research Laboratory, AFRL/RXLM, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: May2009, Vol. 57 Issue 9, p2834; Subject Term: CRYSTAL grain boundaries; Subject Term: MONTE Carlo method; Subject Term: MICROSTRUCTURE; Subject Term: RECRYSTALLIZATION (Metallurgy); Subject Term: DEFORMATIONS (Mechanics); Subject Term: CRYSTAL growth; Author-Supplied Keyword: Grain growth; Author-Supplied Keyword: Grain-boundary inclination; Author-Supplied Keyword: Monte-Carlo technique; Author-Supplied Keyword: Recrystallization; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.actamat.2009.02.034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38331457&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yalin Lu AU - Xiaobing Chen T1 - Plasmon-enhanced luminescence in Yb3+:Y2O3 thin film and the potential for solar cell photon harvesting. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2009/05/11/ VL - 94 IS - 19 M3 - Article SP - 193110 PB - American Institute of Physics SN - 00036951 AB - Photoluminescence in Yb3+:Y2O3 thin films grown on sapphire substrates are enhanced using arrays of gold nanoparticles having different shape aspect ratios. The enhanced photoluminescence is attributed to the resonance of localized surface plasmon resonance modes of gold nanoparticles with multiple optical transition lines of the doped Yb3+ ions. Its potential as an effective means for solar cell photon harvesting through efficient frequency shifting is also discussed, considering the demonstrated benefits of broad spectral response and much relaxed tolerance for nanofabrication. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - DIRECT energy conversion KW - SOLAR cells KW - PHOTOVOLTAIC cells KW - LIGHT sources N1 - Accession Number: 39785820; Yalin Lu 1; Email Address: yalin.lu@usafa.edu Xiaobing Chen 2; Affiliation: 1: Department of Physics, Laser and Optics Research Center, US Air Force Academy, Colorado 80840, USA 2: College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, People's Republic of China; Source Info: 5/11/2009, Vol. 94 Issue 19, p193110; Subject Term: THIN films; Subject Term: DIRECT energy conversion; Subject Term: SOLAR cells; Subject Term: PHOTOVOLTAIC cells; Subject Term: LIGHT sources; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.3133340 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=39785820&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Svetlana Harbaugh AU - Nancy Kelley-Loughnane AU - Molly Davidson AU - Latha Narayanan AU - Sandra Trott AU - Yaroslav G. Chushak AU - Morley O. Stone T1 - FRET-Based Optical Assay for Monitoring Riboswitch Activation. JO - Biomacromolecules JF - Biomacromolecules Y1 - 2009/05/11/ VL - 10 IS - 5 M3 - Article SP - 1055 EP - 1060 SN - 15257797 AB - Riboswitches are regulatory RNAs located in the 5′-untranslated region of mRNA sequences that recognize and bind to small molecules and regulate the expression of downstream genes. Creation of synthetic riboswitches to novel ligands depends on the ability to monitor riboswitch activation in the presence of analyte. In our work, we have coupled a synthetic riboswitch to an optical reporter assay based on fluorescence resonance energy transfer (FRET) between two genetically encoded fluorescent proteins. The theophylline-sensitive riboswitch was placed upstream of the Tobacco Etch Virus (TEV) protease coding sequence. Our FRET construct was composed of eGFP and a nonfluorescent yellow fluorescent protein mutant called REACh (for resonance energy-accepting chromoprotein) connected with a peptide linker containing a TEV protease cleavage site. Addition of theophylline to the E. colicells activates the riboswitch and initiates the translation of mRNA. Synthesized protease cleaves the linker in the FRET-based fusion protein causing a change in the fluorescence signal. By this method, we observed an 11-fold increase in cellular extract fluorescence in the presence of theophylline. The advantage of using an eGFP-REACh pair is the elimination of acceptor fluorescence. This leads to an improved detection of FRET via better signal-to-noise ratio, allowing us to monitor riboswitch activation in a wide range of analyte concentrations from 0.01 to 2.5 mM. [ABSTRACT FROM AUTHOR] AB - Copyright of Biomacromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOLOGICAL assay KW - RNA KW - NUCLEOTIDE sequence KW - ENERGY transfer KW - GENETIC regulation KW - FLUORESCENCE N1 - Accession Number: 39451058; Svetlana Harbaugh 1 Nancy Kelley-Loughnane 1 Molly Davidson 1 Latha Narayanan 1 Sandra Trott 1 Yaroslav G. Chushak 1 Morley O. Stone 1; Affiliation: 1: Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, and Biotechnology HPC Software Applications Institute, Telemedicine and Advanced Technology Research Center, U.S. Army Medical Research and Material Command, Fort Detrick, Maryland 21702; Source Info: May2009, Vol. 10 Issue 5, p1055; Subject Term: BIOLOGICAL assay; Subject Term: RNA; Subject Term: NUCLEOTIDE sequence; Subject Term: ENERGY transfer; Subject Term: GENETIC regulation; Subject Term: FLUORESCENCE; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=39451058&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Drummy, Lawrence F. AU - Koerner, Hilmar AU - Phillips, David M. AU - McAuliffe, Joseph C. AU - Kumar, Manoj AU - Farmer, B.L. AU - Vaia, Richard A. AU - Naik, Rajesh R. T1 - Repeat sequence proteins as matrices for nanocomposites JO - Materials Science & Engineering: C JF - Materials Science & Engineering: C Y1 - 2009/05/05/ VL - 29 IS - 4 M3 - Article SP - 1266 EP - 1272 SN - 09284931 AB - Abstract: Recombinant protein–inorganic nanocomposites comprised of exfoliated Na+ montmorillonite (MMT) in a recombinant protein matrix based on silk-like and elastin-like amino acid motifs (silk elastin-like protein (SELP)) were formed via a solution blending process. Charged residues along the protein backbone are shown to dominate long-range interactions, whereas the SELP repeat sequence leads to local protein/MMT compatibility. Up to a 50% increase in room temperature modulus and a comparable decrease in high temperature coefficient of thermal expansion occur for cast films containing 2–10 wt.% MMT. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: C is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AMINO acid sequence KW - EXTRACELLULAR matrix proteins KW - COMPOSITE materials KW - BIOMEDICAL materials KW - RECOMBINANT proteins KW - NANOSTRUCTURED materials KW - ELASTIN KW - Biomaterials KW - Clay KW - Composites KW - Elastin KW - Silk N1 - Accession Number: 38319329; Drummy, Lawrence F. 1,2; Email Address: lawrence.drummy@wpafb.af.mil Koerner, Hilmar 1,3 Phillips, David M. 1,3 McAuliffe, Joseph C. 4 Kumar, Manoj 4 Farmer, B.L. 1 Vaia, Richard A. 1 Naik, Rajesh R. 1; Email Address: rajesh.naik@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 2: UES Inc., Dayton, OH, USA 3: Universal Technology Corporation, Dayton, OH, USA 4: Biomaterials Group, Genencor International Inc., Palo Alto, CA, USA; Source Info: May2009, Vol. 29 Issue 4, p1266; Subject Term: AMINO acid sequence; Subject Term: EXTRACELLULAR matrix proteins; Subject Term: COMPOSITE materials; Subject Term: BIOMEDICAL materials; Subject Term: RECOMBINANT proteins; Subject Term: NANOSTRUCTURED materials; Subject Term: ELASTIN; Author-Supplied Keyword: Biomaterials; Author-Supplied Keyword: Clay; Author-Supplied Keyword: Composites; Author-Supplied Keyword: Elastin; Author-Supplied Keyword: Silk; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.msec.2008.10.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38319329&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mironov, S. AU - Murzinova, M. AU - Zherebtsov, S. AU - Salishchev, G.A. AU - Semiatin, S.L. T1 - Microstructure evolution during warm working of Ti–6Al–4V with a colony-α microstructure JO - Acta Materialia JF - Acta Materialia Y1 - 2009/05// VL - 57 IS - 8 M3 - Article SP - 2470 EP - 2481 SN - 13596454 AB - Abstract: A high-resolution electron backscatter diffraction technique was employed to investigate microstructure evolution during warm working of Ti–6Al–4V with a colony-α microstructure. Particular emphasis was paid to the specific mechanisms governing this process. Microstructure development was found to be driven mainly by the geometrical requirements of the imposed strain and by the kinking of α lamellae. For the most part, the lamellar microstructure was surprisingly stable during straining, with limited globularization observed only in kinked α colonies. The kinking process was shown to be closely linked with the development of shear bands within the colonies. These observations suggest that changes in strain path may be beneficial in promoting globularization during warm working. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM-aluminum-vanadium alloys KW - MICROSTRUCTURE KW - ELECTRONS -- Backscattering KW - STRAINS & stresses (Mechanics) KW - ELECTRON diffraction KW - Electron backscatter diffraction KW - Microstructure KW - Titanium alloys KW - Warm working N1 - Accession Number: 37577983; Mironov, S. 1; Email Address: S-72@mail.ru Murzinova, M. 2 Zherebtsov, S. 3 Salishchev, G.A. 3 Semiatin, S.L. 4; Affiliation: 1: Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Sendai 980-8579, Japan 2: Institute for Metals Superplasticity Problems, Russian Academy of Science, 39 Khalturin Str., Ufa 450001, Russia 3: Laboratory of Bulk Nanostructured Materials, Belgorod State University, 85 Pobeda Str., Belgorod 308015, Russia 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLM, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: May2009, Vol. 57 Issue 8, p2470; Subject Term: TITANIUM-aluminum-vanadium alloys; Subject Term: MICROSTRUCTURE; Subject Term: ELECTRONS -- Backscattering; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ELECTRON diffraction; Author-Supplied Keyword: Electron backscatter diffraction; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Titanium alloys; Author-Supplied Keyword: Warm working; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.actamat.2009.02.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37577983&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tiley, J. AU - Viswanathan, G.B. AU - Srinivasan, R. AU - Banerjee, R. AU - Dimiduk, D.M. AU - Fraser, H.L. T1 - Coarsening kinetics of γ′ precipitates in the commercial nickel base Superalloy René 88 DT JO - Acta Materialia JF - Acta Materialia Y1 - 2009/05// VL - 57 IS - 8 M3 - Article SP - 2538 EP - 2549 SN - 13596454 AB - Abstract: René 88 DT samples were subjected to different cooling rates after a supersolvus treatment, and aged for varying periods of time from 25 to 200h at 760°C. Primary and secondary γ′ precipitate sizes were measured after each heat treatment. Coarsening rate constants were calculated and reported based on the measured precipitate sizes. When describing the change in radius (r) as a function of time (t), fits between the experimental results and analysis were investigated for two types of functional relationships, r3 vs. t and r2 vs. t. The experimental rate constants derived from this analysis were compared with analytical values deduced from two different models: volume diffusion and bulk diffusion through the interface. The applicability of the two mechanisms for γ′ coarsening is discussed based upon the comparison between the analytically derived and experimentally observed values of these rate constants. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OSTWALD ripening KW - CHEMICAL kinetics KW - NICKEL compounds KW - HEAT resistant alloys KW - PRECIPITATION (Chemistry) KW - METALS -- Heat treatment KW - DIFFUSION KW - Coarsening kinetics KW - Energy-filtered transmission electron microscopy (EFTEM) KW - Ni base superalloys KW - René 88 KW - Three-dimensional atom probe (3DAP) N1 - Accession Number: 37577990; Tiley, J. 1 Viswanathan, G.B. 2 Srinivasan, R. 2; Email Address: rajagopalan.5@osu.edu Banerjee, R. 3 Dimiduk, D.M. 1 Fraser, H.L. 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH 45433, USA 2: Department of Materials and Engineering, The Ohio State University, Columbus, OH 43210, USA 3: Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203, USA; Source Info: May2009, Vol. 57 Issue 8, p2538; Subject Term: OSTWALD ripening; Subject Term: CHEMICAL kinetics; Subject Term: NICKEL compounds; Subject Term: HEAT resistant alloys; Subject Term: PRECIPITATION (Chemistry); Subject Term: METALS -- Heat treatment; Subject Term: DIFFUSION; Author-Supplied Keyword: Coarsening kinetics; Author-Supplied Keyword: Energy-filtered transmission electron microscopy (EFTEM); Author-Supplied Keyword: Ni base superalloys; Author-Supplied Keyword: René 88; Author-Supplied Keyword: Three-dimensional atom probe (3DAP); NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.actamat.2009.02.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37577990&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kahler, S.W. T1 - Variation of SEP event occurrence with heliospheric magnetic field magnitudes JO - Advances in Space Research JF - Advances in Space Research Y1 - 2009/05// VL - 43 IS - 9 M3 - Article SP - 1423 EP - 1428 SN - 02731177 AB - Abstract: Recent work based on nitrate abundances in polar ice cores has shown that large fluence solar energetic particle (LSEP) events during the spacecraft era of observations (1960–present) are diminished in comparison with those of some preceding eras detected in the ice cores dating back to 1561. McCracken et al. [McCracken, K.G., Dreschhoff, G.A.M., Smart, D.F., Shea, M.A. A study of the frequency of occurrence of large-fluence solar proton events and the strength of the interplanetary magnetic field, Sol. Phys., 224, 359–372, 2004] have reported an inverse correlation between LSEP events and the magnitudes of the associated reconstructed heliospheric magnetic fields (HMF). A physical working model by McCracken [McCracken, K.G. Changes in the cosmic ray and heliomagnetic components of space climate, 1428–2005, including the variable occurrence of solar energetic particle events, Adv. Space Res., 40, 1070–1077, 2007a; McCracken, K.G. High frequency of occurrence of large solar energetic particle events prior to 1958 and a possible repetition in the near future, Space Weather, 5, S07004, 2007b] is that the lower HMF and coronal magnetic field B imply that fast coronal mass ejections (CMEs) produce shocks with enhanced Alfvenic Mach numbers and higher compression ratios r, leading to shock production of more numerous and energetic LSEP events. From a possible decline of the HMF over the next several solar cycles he has urged a watch for a return to the environment of high-frequency, high-fluence LSEP events preceding the current spacecraft era. His LSEP event watch involves three independent questions about (1) the physical model, (2) the prediction of decreasing solar-cycle sunspot numbers and heliomagnetic fields, and (3) the inferred anti-correlation between LSEP events and HMFs. Here we discuss observational evidence bearing on the last question and find little support for the claimed LSEP-HMF anticorrelation. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR energetic particles KW - SOLAR magnetic fields KW - HELIOSPHERE (Astrophysics) KW - ICE KW - SPACE vehicles KW - INTERPLANETARY magnetic fields KW - CORONAL mass ejections KW - ANTARCTICA KW - Coronal mass ejections KW - Interplanetary magnetic fields KW - Solar energetic particles N1 - Accession Number: 37577230; Kahler, S.W. 1; Email Address: stephen.kahler@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, RVBXS, 29 Randolph Road, Hanscom AFB, MA 01731, USA; Source Info: May2009, Vol. 43 Issue 9, p1423; Subject Term: SOLAR energetic particles; Subject Term: SOLAR magnetic fields; Subject Term: HELIOSPHERE (Astrophysics); Subject Term: ICE; Subject Term: SPACE vehicles; Subject Term: INTERPLANETARY magnetic fields; Subject Term: CORONAL mass ejections; Subject Term: ANTARCTICA; Author-Supplied Keyword: Coronal mass ejections; Author-Supplied Keyword: Interplanetary magnetic fields; Author-Supplied Keyword: Solar energetic particles; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.asr.2009.01.039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37577230&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanfield, Scott A. AU - Menart, James AU - DeJoseph, Jr., Charles AU - Kimmel, Roger L. AU - Hayes, James R. T1 - Rotational and Vibrational Temperature Distributions for a Dielectric Barrier Discharge in Air. JO - AIAA Journal JF - AIAA Journal Y1 - 2009/05// VL - 47 IS - 5 M3 - Article SP - 1107 EP - 1115 SN - 00011452 AB - Spatially resolved rotational and vibrational temperatures for N2 and rotational temperatures for N+N2, as a function of voltage, have been obtained for an asymmetric surface mode dielectric barrier discharge using emission spectroscopy. The rotational temperatures were obtained front a nonlinear least-squares fit of a two-temperature theoretical spectrum with the measured spectra of the N2(C3Π2 - B³Πg) and N+2 (B²Σ+u- X²Σ+g) electronic band systems. The vibrational temperatures were obtained by applying the Boltzmann plot method to the Δv = - 2 sequence of the N2(C3Πu - B³Πg electronic band system. It was Observed that the rotational temperatures for N2 and N+2 decreased in the induced flow direction and increased wit It increasing voltage. Values started at 390 ± 10 K and decreased to 340 ± 10 K for N2 and started at 500 ± 15 K and decreased to 450 ± 15 K for N+2. The vibrational temperatures also decreased in the induced flow direction front 3250 to 2850 ± 300 K. A difference in rotational temperatures between N2 and N+2 was observed for all voltages studied, and these differences increased with increasing voltage. The rotational temperatures of both species fluctuated in the spanwise direction. These fluctuations damped out in the streamwise direction and were weakly correlated with the attachment points of the microdischarges on the edge of lite exposed electrode. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC discharges through gases KW - DIELECTRICS KW - TEMPERATURE distribution KW - EMISSION spectroscopy KW - ELECTRODES KW - AIR flow N1 - Accession Number: 73467329; Stanfield, Scott A. 1; Email Address: stanfield.3@wright.edu Menart, James 2; Email Address: james.menart@wright.edu DeJoseph, Jr., Charles 3 Kimmel, Roger L. 4 Hayes, James R. 5; Affiliation: 1: Department of Mechanical and Materials Engineering, Wright State University, Dayton, Ohio, 45435 2: Associate Professor, Department of Mechanical and Materials Engineering, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, 45433 3: Principal Research Physicist, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, 45433 4: Principal Aerospace Engineer, Associate Fellow AIAA, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, 45433 5: Senior Research Engineer, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, 45433; Source Info: May2009, Vol. 47 Issue 5, p1107; Subject Term: ELECTRIC discharges through gases; Subject Term: DIELECTRICS; Subject Term: TEMPERATURE distribution; Subject Term: EMISSION spectroscopy; Subject Term: ELECTRODES; Subject Term: AIR flow; Number of Pages: 9p; Document Type: Article L3 - 10.2514/1.37648 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73467329&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - O’Hara, P. AU - Duarte, C.A. AU - Eason, T. T1 - Generalized finite element analysis of three-dimensional heat transfer problems exhibiting sharp thermal gradients JO - Computer Methods in Applied Mechanics & Engineering JF - Computer Methods in Applied Mechanics & Engineering Y1 - 2009/05// VL - 198 IS - 21-26 M3 - Article SP - 1857 EP - 1871 SN - 00457825 AB - Abstract: In this paper, heat transfer problems exhibiting sharp thermal gradients are analyzed using the classical and generalized finite element methods. The effect of solution roughness on the ability of the methods to obtain accurate approximations is investigated. Convergence studies show that low order (linear and quadratic) elements require strongly refined meshes for acceptable accuracy. We propose a generalized FEM with global–local enrichments for the class of problems investigated in the paper. In this procedure, a global solution space defined on a coarse mesh is enriched through the partition of unity framework of the generalized FEM with solutions of local boundary value problems. The local problems are defined using the same procedure as in the global–local FEM, where boundary conditions are provided by a coarse scale global solution. Coarse, uniform, global meshes are acceptable even at regions with thermal spikes that are orders of magnitude smaller than the element size. Convergence on these discretizations was achieved even when no or limited convergence was observed in the local problems. Two approaches are proposed to improve the boundary conditions prescribed on local problems and their convergence. The use of the corresponding improved local solutions as enrichments for the global problem extends the range of target error level for the enriched global problem. The two-way information transfer provided by the proposed generalized FEM is appealing to several classes of problems, especially those involving multiple spatial scales. The proposed methodology brings the benefits of generalized FEM to problems where limited or no information about the solution is known a priori. [Copyright &y& Elsevier] AB - Copyright of Computer Methods in Applied Mechanics & Engineering is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT transfer KW - BOUNDARY value problems -- Numerical solutions KW - HEAT equation -- Numerical solutions KW - FINITE element method KW - GENERALIZABILITY theory (Statistics) KW - MATHEMATICAL physics KW - APPROXIMATION theory KW - Generalized finite elements KW - Global local finite elements KW - High order methods KW - Hp methods KW - Multiscale problems KW - Rough solutions N1 - Accession Number: 37346943; O’Hara, P. 1; Email Address: pohara@uiuc.edu Duarte, C.A. 1; Email Address: caduarte@uiuc.edu Eason, T. 2; Email Address: Thomas.Eason@wpafb.af.mil; Affiliation: 1: Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Newmark Laboratory, 205 North Mathews Avenue, Urbana, IL 61801, USA 2: Air Force Research Laboratory, Air Vehicles Directorate, WPAFB, OH, USA; Source Info: May2009, Vol. 198 Issue 21-26, p1857; Subject Term: HEAT transfer; Subject Term: BOUNDARY value problems -- Numerical solutions; Subject Term: HEAT equation -- Numerical solutions; Subject Term: FINITE element method; Subject Term: GENERALIZABILITY theory (Statistics); Subject Term: MATHEMATICAL physics; Subject Term: APPROXIMATION theory; Author-Supplied Keyword: Generalized finite elements; Author-Supplied Keyword: Global local finite elements; Author-Supplied Keyword: High order methods; Author-Supplied Keyword: Hp methods; Author-Supplied Keyword: Multiscale problems; Author-Supplied Keyword: Rough solutions; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.cma.2008.12.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37346943&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Usechak, Nicholas G. AU - Hostetler, John L. T1 - Single-Shot, High-Speed, Thermal-Interface Characterization of Semiconductor Laser Arrays. JO - IEEE Journal of Quantum Electronics JF - IEEE Journal of Quantum Electronics Y1 - 2009/05// VL - 45 IS - 5 M3 - Article SP - 531 EP - 541 SN - 00189197 AB - Through a detailed characterization of' thermally induced output power degradation it is possible to use junction heating as a tool to resolve thermal interfaces on μs timescales using a single-shot characterization technique. In this work, the deleterious effect junction heating has on the optical output power of a laser array is characterized and then used to infer the time-dependent junction temperature in response to current pulses of varying widths. The extracted parameters are also used numerically to model the laser as a temperature-dependent heat source for thermal simulations. This treatment allows realistic packaging and emitter-placement studies to be parametrically performed by incorporating the relationship between temperature and output power/efficiency for each emitter. In this respect, once the temperature behavior of a single emitter is quantified, the operating temperature and output power performance can be accurately predicted for any realistic physical arrangement of laser array and packaging. The experimental method presented in this work is also compared to other techniques and numerical simulations using the nonlinear heat source; this demonstrates the utility of this approach and the convenience of using easily measured parameters in thermal simulations. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Journal of Quantum Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR lasers KW - THERMAL insulation KW - INTERFACES (Physical sciences) KW - LASERS KW - COMPUTER simulation KW - SEMICONDUCTORS KW - High-power lasers KW - semiconductor device testing KW - semiconductor laser arrays KW - single-shot thermal measurements KW - thermal modeling N1 - Accession Number: 41139900; Usechak, Nicholas G. 1; Email Address: nicholas.usechak@wpafb.af.mil Hostetler, John L. 2; Email Address: john.hostetler@us.trumpf.com; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA 2: TRUMPF Photonics Inc., Cranbury, NJ 08512 USA; Source Info: May2009, Vol. 45 Issue 5, p531; Subject Term: SEMICONDUCTOR lasers; Subject Term: THERMAL insulation; Subject Term: INTERFACES (Physical sciences); Subject Term: LASERS; Subject Term: COMPUTER simulation; Subject Term: SEMICONDUCTORS; Author-Supplied Keyword: High-power lasers; Author-Supplied Keyword: semiconductor device testing; Author-Supplied Keyword: semiconductor laser arrays; Author-Supplied Keyword: single-shot thermal measurements; Author-Supplied Keyword: thermal modeling; NAICS/Industry Codes: 238310 Drywall and Insulation Contractors; NAICS/Industry Codes: 423330 Roofing, Siding, and Insulation Material Merchant Wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 11p; Illustrations: 2 Black and White Photographs, 1 Diagram, 1 Chart, 12 Graphs; Document Type: Article L3 - 10.1109/JQE.2009.2013097 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=41139900&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pilchak, A.L. AU - Bhattacharjee, A. AU - Rosenberger, A.H. AU - Williams, J.C. T1 - Low ΔK faceted crack growth in titanium alloys JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2009/05// VL - 31 IS - 5 M3 - Article SP - 989 EP - 994 SN - 01421123 AB - Abstract: This communication describes the results of spectrum fatigue loading experiments conducted on cast and hot isostatically pressed Ti–6Al–4V. The purpose of the experiments is to elucidate the nature of faceted crack growth that occurs at low values of ΔK in titanium alloys during cyclic loading. The results clearly show that multiple load cycles are required for the crack to traverse one grain and produce a single facet. The confusing terminology related to low ΔK fatigue fracture topography is reviewed and the term “low ΔK faceted growth” is proposed as a preferred descriptor. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys -- Fatigue KW - METALS -- Fracture KW - CYCLIC loads KW - FRACTURE mechanics KW - MATERIALS science KW - Crack growth KW - Faceted growth KW - Overloads KW - Titanium alloys N1 - Accession Number: 36565577; Pilchak, A.L. 1; Email Address: pilchak@matsceng.ohio-state.edu Bhattacharjee, A. 1 Rosenberger, A.H. 2 Williams, J.C. 1; Affiliation: 1: Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: May2009, Vol. 31 Issue 5, p989; Subject Term: TITANIUM alloys -- Fatigue; Subject Term: METALS -- Fracture; Subject Term: CYCLIC loads; Subject Term: FRACTURE mechanics; Subject Term: MATERIALS science; Author-Supplied Keyword: Crack growth; Author-Supplied Keyword: Faceted growth; Author-Supplied Keyword: Overloads; Author-Supplied Keyword: Titanium alloys; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.ijfatigue.2008.03.036 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36565577&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Snyder, Matthew P. AU - Sanders, Brian AU - Eastep, Franklin E. AU - Frank, Geoffrey J. T1 - Vibration and Flutter Characteristics of a Folding Wing. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2009/05//May/Jun2009 VL - 46 IS - 3 M3 - Article SP - 791 EP - 799 SN - 00218669 AB - Studies are presented that characterize the dynamic aeroelastic aspects of a morphing aircraft design concept. The notion of interest is a folding wing design resulting in large-scale wing area changes. A finite element approach is used to investigate the sensitivity of natural frequencies and flutter instabilities to the Wing position (e.g., fold angle), actuator stiffness, and vehicle weight. Sensitivities in these areas drive design requirements and raise flight envelope awareness issues. The study is presented in two parts as a comparison between two models of varying complexity. A simple folding wing model, based on the Goland wing, is analyzed and results are compared with a built-up structural model of the proposed full scale morphing vehicle. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - FINITE element method KW - ACTUATORS KW - MORPHING (Computer animation) KW - FLUTTER (Aerodynamics) KW - AERODYNAMICS KW - STRUCTURAL frames -- Models N1 - Accession Number: 43251719; Snyder, Matthew P. 1 Sanders, Brian 2 Eastep, Franklin E. 3 Frank, Geoffrey J. 3; Affiliation: 1: U.S. Air Force Academy, Colorado Springs, Colorado 80840 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 3: University of Dayton Research Institute, Dayton, Ohio 45469; Source Info: May/Jun2009, Vol. 46 Issue 3, p791; Subject Term: AEROELASTICITY; Subject Term: FINITE element method; Subject Term: ACTUATORS; Subject Term: MORPHING (Computer animation); Subject Term: FLUTTER (Aerodynamics); Subject Term: AERODYNAMICS; Subject Term: STRUCTURAL frames -- Models; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 9p; Illustrations: 9 Diagrams, 1 Chart, 13 Graphs; Document Type: Article L3 - 10.2514/1.34685 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43251719&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, Y. I. AU - Park, G. J. AU - Kolonay, R. M. AU - Blair, M. AU - Canfield, R. A. T1 - Nonlinear Dynamic Response Structural Optimization of a Joined-Wing Using Equivalent Static Loads. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2009/05//May/Jun2009 VL - 46 IS - 3 M3 - Article SP - 821 EP - 831 SN - 00218669 AB - The joined-wing configuration that was published by Wolkovich in 1986 has been studied by many researchers (Wolkovich, J., "The Joined-Wing: An Overview," Journal of Aircraft, Vol. 23, No. 3, 1986, pp. 161-178. doi: 10.2514/3.45285). The joined-wing airplane is defined as an airplane that incorporates tandem wings arranged to form diamond shapes from both the top and front views. The joined wing can lead to increased aerodynamic performances as well as a reduction in the structural weight. However, the joined wing has high geometric nonlinearity under the gust load. The gust load acts as a dynamic load. Therefore, nonlinear dynamic (transient) behavior of the joined wing should be considered in structural optimization. In previous research, linear dynamic response optimization and nonlinear static response optimization were performed. It is well known that conventional nonlinear dynamic response optimization is extremely expensive. Therefore, in this research, nonlinear dynamic response optimization of a joined wing is carried out by using equivalent static loads. The concept of equivalent static loads is expanded and newly proposed for nonlinear dynamic response optimization. Equivalent static loads are the load sets that generate the same response field in linear static analysis as that in nonlinear dynamic analysis. Therefore, nonlinear dynamic response optimization can be conducted by repeated use of linear response optimization. For the verification of efficiency of the proposed method, a simple nonlinear dynamic response optimization problem is introduced. The problem is solved by using both the equivalent static loads method and the conventional method with sensitivity analysis using the finite difference method. The procedure for nonlinear dynamic response optimization of a joined wing using equivalent static loads is explained, and the optimum results are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - GUST loads KW - AERODYNAMIC load KW - DYNAMIC loads (Mechanics) KW - STRUCTURAL optimization KW - DEAD loads (Mechanics) KW - FINITE differences N1 - Accession Number: 43251722; Kim, Y. I. 1 Park, G. J. 1; Email Address: gjpark@hanyang.ac.kr Kolonay, R. M. 2 Blair, M. 2 Canfield, R. A. 3; Affiliation: 1: Hanyang University, Gyeonggi-do 426-791, Republic of Korea 2: U. S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 3: U. S. Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433-7765; Source Info: May/Jun2009, Vol. 46 Issue 3, p821; Subject Term: AIRPLANE wings; Subject Term: GUST loads; Subject Term: AERODYNAMIC load; Subject Term: DYNAMIC loads (Mechanics); Subject Term: STRUCTURAL optimization; Subject Term: DEAD loads (Mechanics); Subject Term: FINITE differences; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 11p; Illustrations: 11 Diagrams, 5 Charts, 8 Graphs; Document Type: Article L3 - 10.2514/1.36762 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43251722&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, Danhong AU - Gumbs, Godfrey AU - Lin, Shawn-Yu T1 - Self-consistent theory for near-field distribution and spectrum with quantum wires and a conductive grating in terahertz regime. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2009/05// VL - 105 IS - 9 M3 - Article SP - 093715 EP - 093726 PB - American Institute of Physics SN - 00218979 AB - In the presence of the optical polarization produced by a quantum-wire array in proximity with a conductive grating on the top of a semi-infinite doped semiconductor with a period much smaller than the wavelength of an electromagnetic field, both the near-field distribution and spectra were studied. The calculations were carried out with the use of a self-consistent linear response theory for an impinging weak electromagnetic field, which, in turn, was determined from Maxwell’s equations with an induced nonlocal polarization field. Due to a resonant quantum effect, we found that the quantum wires strongly enhanced not only the transmission field for p polarization but also the reflection field for s polarization. When the quantum wires were placed at an edge of the groove formed by a channel in the grating, the induced destructive interference between different discrete diffraction modes of a transverse field was found, which led to a dip in the reflection spectrum for both s and p polarizations as well as in the s-polarized transmission spectrum. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOWIRES KW - ELECTROMAGNETIC fields KW - DOPED semiconductors KW - MAXWELL equations KW - POLARIZATION (Electricity) KW - ELECTRIC interference KW - OPTICAL diffraction N1 - Accession Number: 39786036; Huang, Danhong 1 Gumbs, Godfrey 2 Lin, Shawn-Yu 3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, 2: Department of Physics and Astronomy, Hunter College of the City University of New York, 695 Park Avenue, New York, New York 10065, 3: Department of Physics, Applied Physics, and Astronomy, Department of Electrical, Computer, and Systems Engineering, and Future Chips Constellation, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180,; Source Info: May2009, Vol. 105 Issue 9, p093715; Subject Term: NANOWIRES; Subject Term: ELECTROMAGNETIC fields; Subject Term: DOPED semiconductors; Subject Term: MAXWELL equations; Subject Term: POLARIZATION (Electricity); Subject Term: ELECTRIC interference; Subject Term: OPTICAL diffraction; Number of Pages: 11p; Illustrations: 1 Diagram, 9 Graphs; Document Type: Article L3 - 10.1063/1.3116737 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=39786036&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yliniemi, Eno M. AU - Pellettiere, Joseph A. AU - Doczy, Erica J. AU - Nuckley, David J. AU - Perry, Chris E. AU - Ching, Randal P. T1 - Dynamic Tensile Failure Mechanics of the Musculoskeletal Neck Using a Cadaver Model. JO - Journal of Biomechanical Engineering JF - Journal of Biomechanical Engineering Y1 - 2009/05// VL - 131 IS - 5 M3 - Article SP - 4 EP - 4 SN - 01480731 AB - Although the catapult phase of pilot ejections has been well characterized in terms of human response to compressive forces, the effect of the forces on the human body during the ensuing ejection phases (including windblast and parachute opening shock) has not been thoroughly investigated. Both windblast and parachute opening shock have been shown to induce dynamic tensile forces in the human cervical spine. However, the human tolerance to such loading is not well known. Therefore, the main objective of this research project was to measure human tensile neck failure mechanics to provide data for computational modeling, anthropometric test device development, and improved tensile injury criteria. Twelve human cadaver specimens, including four females and eight males with a mean age of 50.1±9 years, were subjected to dynamic tensile loading through the musculoskeletal neck until failure occurred. Failure load, failure strain, and tensile stiffness were measured and correlated with injury type and location. The mean failure load for the 12 specimens was 3100±645 N, mean failure strain was 16.7±5.4%, and mean tensile stiffness was 172±54.5 N/mm. The majority of injuries (8) occurred in the upper cervical spine (Oc-C3), and none took place in the midcervical region (C3-C5). The results of this study assist in filling the existing void in dynamic tensile injury data and will aid in developing improved neck injury prevention strategies. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Biomechanical Engineering is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MECHANICAL engineering KW - MUSCULOSKELETAL system KW - HUMAN physiology KW - HUMAN body KW - CERVICAL vertebrae KW - MATHEMATICAL models KW - DIAGNOSTIC specimens KW - WOUNDS & injuries -- Prevention KW - SCIENTIFIC experimentation KW - biological organs KW - biomechanics KW - bone KW - elastic constants KW - failure (mechanical) N1 - Accession Number: 43426701; Yliniemi, Eno M. 1 Pellettiere, Joseph A. 2 Doczy, Erica J. 2 Nuckley, David J. 1 Perry, Chris E. 2 Ching, Randal P. 1; Affiliation: 1: Department of Mechanical Engineering, Applied Biomechanics Laboratory, University of Washington, 501 Eastlake Avenue E, Suite 102, Seattle, WA 98109 2: Biomechanics Branch, Air Force Research Laboratory, Wright-Patterson AFB, AFRL/RHPA, 2800 Q Street, Wright-Patterson AFB, OH 45433; Source Info: May2009, Vol. 131 Issue 5, p4; Subject Term: MECHANICAL engineering; Subject Term: MUSCULOSKELETAL system; Subject Term: HUMAN physiology; Subject Term: HUMAN body; Subject Term: CERVICAL vertebrae; Subject Term: MATHEMATICAL models; Subject Term: DIAGNOSTIC specimens; Subject Term: WOUNDS & injuries -- Prevention; Subject Term: SCIENTIFIC experimentation; Author-Supplied Keyword: biological organs; Author-Supplied Keyword: biomechanics; Author-Supplied Keyword: bone; Author-Supplied Keyword: elastic constants; Author-Supplied Keyword: failure (mechanical); NAICS/Industry Codes: 541330 Engineering Services; Number of Pages: 1p; Document Type: Article L3 - 10.1115/1.3078151 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43426701&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yliniemi, Eno M. AU - Pellettiere, Joseph A. AU - Doczy, Erica J. AU - Nuckley, David J. AU - Perry, Chris E. AU - Ching, Randal P. T1 - Dynamic Tensile Failure Mechanics of the Musculoskeletal Neck Using a Cadaver Model. JO - Journal of Heat Transfer JF - Journal of Heat Transfer Y1 - 2009/05// VL - 131 IS - 5 M3 - Article SP - 3 EP - 3 SN - 00221481 AB - Although the catapult phase of pilot ejections has been well characterized in terms of human response to compressive forces, the effect of the forces on the human body during the ensuing ejection phases (including windblast and parachute opening shock) has not been thoroughly investigated. Both windblast and parachute opening shock have been shown to induce dynamic tensile forces in the human cervical spine. However, the human tolerance to such loading is not well known. Therefore, the main objective of this research project was to measure human tensile neck failure mechanics to provide data for computational modeling, anthropometric test device development, and improved tensile injury criteria. Twelve human cadaver specimens, including four females and eight males with a mean age of 50.1±9 years, were subjected to dynamic tensile loading through the musculoskeletal neck until failure occurred. Failure load, failure strain, and tensile stiffness were measured and correlated with injury type and location. The mean failure load for the 12 specimens was 3100±645 N, mean failure strain was 16.7±5.4%, and mean tensile stiffness was 172±54.5 N/mm. The majority of injuries (8) occurred in the upper cervical spine (Oc-C3), and none took place in the midcervical region (C3-C5). The results of this study assist in filling the existing void in dynamic tensile injury data and will aid in developing improved neck injury prevention strategies. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Heat Transfer is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HUMAN physiology KW - HUMAN body KW - MUSCULOSKELETAL system KW - DEAD KW - WOUNDS & injuries -- Prevention KW - HUMAN anatomy KW - BIOMECHANICS KW - biological organs KW - biomechanics KW - bone KW - elastic constants KW - failure (mechanical) N1 - Accession Number: 43426681; Yliniemi, Eno M. 1 Pellettiere, Joseph A. 2 Doczy, Erica J. 2 Nuckley, David J. 1 Perry, Chris E. 2 Ching, Randal P. 1; Affiliation: 1: Department of Mechanical Engineering, Applied Biomechanics Laboratory, University of Washington, 501 Eastlake Avenue E, Suite 102, Seattle, WA 98109 2: Biomechanics Branch, Air Force Research Laboratory, Wright-Patterson AFB, AFRL/RHPA, 2800 Q Street, Wright-Patterson AFB, OH 45433; Source Info: May2009, Vol. 131 Issue 5, p3; Subject Term: HUMAN physiology; Subject Term: HUMAN body; Subject Term: MUSCULOSKELETAL system; Subject Term: DEAD; Subject Term: WOUNDS & injuries -- Prevention; Subject Term: HUMAN anatomy; Subject Term: BIOMECHANICS; Author-Supplied Keyword: biological organs; Author-Supplied Keyword: biomechanics; Author-Supplied Keyword: bone; Author-Supplied Keyword: elastic constants; Author-Supplied Keyword: failure (mechanical); Number of Pages: 1p; Document Type: Article L3 - 10.1115/1.3078151 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43426681&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bisek, Nicholas J. AU - Boyd, Iain D. AU - Poggie, Jonathan T1 - Numerical Study of Plasma-Assisted Aerodynamic Control for Hypersonic Vehicles. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2009/05//May/Jun2009 VL - 46 IS - 3 M3 - Article SP - 568 EP - 576 SN - 00224650 AB - Plasma actuators and various forms of volumetric energy deposition have received a good deal of research attention recently as a means of hypersonic flight control. An open question remains as to whether the required power expenditures for such devices can be achieved for practical systems. To address this issue, a numerical study is carried out for hypersonic flow over a blunt-nose elliptic cone to determine the amount of energy deposition necessary for flight control. Energy deposition is simulated by means of a phenomenological dissipative heating model. A parametric study of the effects of energy deposition is carried out for several blunt elliptic cone configurations. Three different volumetric energy deposition patterns are considered: a spherical pattern, a "pancake" pattern (oblate spheroid), and a "bean" pattern (prolate spheroid). The effectiveness of volumetric energy deposition for flight control appears to scale strongly with a nondimensional parameter based on the freestream flow kinetic energy flux. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACTUATORS KW - HYPERSONIC aerodynamics KW - FLIGHT control KW - COMPUTER simulation KW - AERODYNAMICS KW - ELLIPTIC space N1 - Accession Number: 43039984; Bisek, Nicholas J. 1,2 Boyd, Iain D. 1,3 Poggie, Jonathan 1,3; Affiliation: 1: U.S. Air Force Research Laboratory, Wright--Patterson Air Force Base, Ohio, 45433-7512 2: Student Member AIAA 3: Associate Fellow AIAA; Source Info: May/Jun2009, Vol. 46 Issue 3, p568; Subject Term: ACTUATORS; Subject Term: HYPERSONIC aerodynamics; Subject Term: FLIGHT control; Subject Term: COMPUTER simulation; Subject Term: AERODYNAMICS; Subject Term: ELLIPTIC space; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 9p; Illustrations: 2 Diagrams, 5 Charts, 12 Graphs; Document Type: Article L3 - 10.2514/1.39032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43039984&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hester, Benjamin D. AU - Yu-hui Chiu AU - Winick, Jeremy R. AU - Dressler, Rainer A. AU - Bernstein, Lawrence S. AU - Braunstein, Matthew T1 - Analysis of Space Shuttle Primary Reaction-Control Engine-Exhaust Transients. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2009/05//May/Jun2009 VL - 46 IS - 3 M3 - Article SP - 679 EP - 688 SN - 00224650 AB - A series of 22 primary reaction-control-system engine attitude-control firings were observed from the Maui Space Surveillance Site during the space shuttle STS-115 mission. The firings occurred during a pass over Maui on 19 September 2006 during which the orbiter was in sunlight and the observatory was in darkness. The observed attitude maneuvers maintained the orbiter in an orientation in which its long axis was aligned with the line of sight from the observatory. This ensured that the thrust vectors of all the observed engine firings were perpendicular to the line of sight, providing an optimal side-on observation of the exhaust. The firings ranged between 80 and 320 ms in duration and involved 2 or 3 engines for pitch, roll, and yaw adjustments. A 0.328 deg field-of-view acquisition scope of the 3.6 m telescope of the Advanced Electro-Optical System provided unfiltered imagery in the near-ultraviolet visible spectral region. The most interesting white-light features were transients, one observed at engine start up and two at shutdown. The analysis of the transient speeds reveals that the startup transient consists of either unburned propellant droplets or higher-pressure gas evaporated from droplets and that the shutdown transients are attributable to a slightly staggered release of unburned oxidizer and fuel, respectively. The first (oxidizer) shutdown transient is the brightest feature, for which an intensity evolution analysis is conducted. The analysis of the ground-based data is fully consistent with spectral features attributable to primary reaction-control-system engine transients observed in previous measurements from the space shuttle bay using an imager spectrograph. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLIGHT control KW - SPACE surveillance KW - SPACE shuttles KW - OXIDIZING agents KW - SPECTROGRAPHS KW - AIRCRAFT exhaust emissions N1 - Accession Number: 43039995; Hester, Benjamin D. 1 Yu-hui Chiu 1,2 Winick, Jeremy R. 1 Dressler, Rainer A. 2,3 Bernstein, Lawrence S. 3 Braunstein, Matthew 3; Affiliation: 1: U.S. Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731 2: Member AIAA 3: Spectral Sciences, Inc., Burlington, Massachusetts 01803-3304; Source Info: May/Jun2009, Vol. 46 Issue 3, p679; Subject Term: FLIGHT control; Subject Term: SPACE surveillance; Subject Term: SPACE shuttles; Subject Term: OXIDIZING agents; Subject Term: SPECTROGRAPHS; Subject Term: AIRCRAFT exhaust emissions; NAICS/Industry Codes: 417930 Professional machinery, equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423490 Other Professional Equipment and Supplies Merchant Wholesalers; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; Number of Pages: 10p; Illustrations: 1 Diagram, 4 Charts, 8 Graphs; Document Type: Article L3 - 10.2514/1.39516 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43039995&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cowen, Kenneth AU - Goodwin, Bradley AU - Joseph, Darrell AU - Tefend, Matthew AU - Satola, Jan AU - Kagann, Robert AU - Hashmonay, Ram AU - Spicer, Chester AU - Holdren, Michael AU - Mayfield, Howard T1 - Extractive Sampling and Optical Remote Sensing of F100 Aircraft Engine Emissions. JO - Journal of the Air & Waste Management Association (Air & Waste Management Association) JF - Journal of the Air & Waste Management Association (Air & Waste Management Association) Y1 - 2009/05// VL - 59 IS - 5 M3 - Article SP - 531 EP - 539 PB - Air & Waste Management Association SN - 10962247 AB - The Strategic Environmental Research and Development Program (SERDP) has initiated several programs to develop and evaluate techniques to characterize emissions from military aircraft to meet increasingly stringent regulatory requirements. This paper describes the results of a recent field study using extractive and optical remote sensing (ORS) techniques to measure emissions from six F-15 fighter aircraft. Testing was performed between November 14 and 16, 2006 on the trim-pad facility at Tyndall Air Force Base in Panama City, FL. Measurements were made on eight different F100 engines, and the engines were tested on-wing of in-use aircraft. A total of 39 test runs were performed at engine power levels that ranged from idle to military power. The approach adopted for these tests involved extractive sampling with collocated ORS measurements at a distance of approximately 20-25 nozzle diameters downstream of the engine exit plane. The emission indices calculated for carbon dioxide, carbon monoxide, nitric oxide, and several volatile organic compounds showed very good agreement when comparing the extractive and ORS sampling methods. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Air & Waste Management Association (Air & Waste Management Association) is the property of Air & Waste Management Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REMOTE sensing KW - AIRPLANES -- Motors KW - ENVIRONMENTAL research KW - FIELD work (Research) KW - SAMPLING (Statistics) KW - AERODYNAMICS KW - PANAMA City (Fla.) KW - FLORIDA N1 - Accession Number: 39231282; Cowen, Kenneth 1; Email Address: cowenk@battelle.org Goodwin, Bradley 1 Joseph, Darrell 1 Tefend, Matthew 1 Satola, Jan 1 Kagann, Robert 2 Hashmonay, Ram 2 Spicer, Chester 3 Holdren, Michael 4 Mayfield, Howard 5; Affiliation: 1: Battelle, Columbus, OH 2: ARCADIS G&M, Durham, NC 3: SpiceAir Consulting, Columbus, OH 4: Scientific Consulting, Columbus, OH 5: Air Force Research Laboratory, Tyndall Air Force Base, Panama City, FL; Source Info: May2009, Vol. 59 Issue 5, p531; Subject Term: REMOTE sensing; Subject Term: AIRPLANES -- Motors; Subject Term: ENVIRONMENTAL research; Subject Term: FIELD work (Research); Subject Term: SAMPLING (Statistics); Subject Term: AERODYNAMICS; Subject Term: PANAMA City (Fla.); Subject Term: FLORIDA; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 541910 Marketing Research and Public Opinion Polling; Number of Pages: 9p; Illustrations: 2 Diagrams, 5 Charts, 5 Graphs; Document Type: Article L3 - 10.3155/1047-3289.59.5.531 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=39231282&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parthasarathy, Triplicane A. AU - Rapp, Robert A. AU - Opeka, Mark AU - Kerans, Ronald J. T1 - Effects of Phase Change and Oxygen Permeability in Oxide Scales on Oxidation Kinetics of ZrB2 and HfB2. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2009/05// VL - 92 IS - 5 M3 - Article SP - 1079 EP - 1086 PB - Wiley-Blackwell SN - 00027820 AB - A wide range of experimental data on the oxidation of ZrB2 and HfB2 as a function of temperature (800°–2500°C) is interpreted using a mechanistic model that relaxes two significant assumptions made in prior work. First, inclusion of the effect of volume change associated with monoclinic to tetragonal phase change of the MeO2 phases is found to rationalize the observations by several investigators of abrupt changes in weight gain, recession, and oxygen consumed, as the temperature is raised through the transformation temperatures for ZrO2 and HfO2. Second, the inclusion of oxygen permeability in ZrO2 is found to rationalize the enhancement in oxidation behavior at very high temperatures (>1800°C) of ZrB2, while the effect of oxygen permeability in HfO2 is negligible. Based on these considerations, the significant advantage of HfB2 over ZrB2 is credited to the higher transformation temperature and lower oxygen permeability of HfO2 compared with ZrO2. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHASE transformations (Physics) KW - MAGNETIC permeability KW - OXIDATION-reduction reaction KW - ELECTROLYTIC oxidation KW - ORGANIC oxides KW - CHEMICAL kinetics KW - HIGH temperatures N1 - Accession Number: 38711551; Parthasarathy, Triplicane A. 1; Email Address: triplicane.parthasarathy@wpafb.af.mil Rapp, Robert A. 2 Opeka, Mark 3 Kerans, Ronald J. 4; Affiliation: 1: UES Inc., Dayton, Ohio 45432 2: The Ohio State University, Columbus, Ohio 43235 3: Naval Surface Warfare Center, Carderock, Maryland 20817 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLN, Wright-Patterson AFB, Ohio 45433-7817; Source Info: May2009, Vol. 92 Issue 5, p1079; Subject Term: PHASE transformations (Physics); Subject Term: MAGNETIC permeability; Subject Term: OXIDATION-reduction reaction; Subject Term: ELECTROLYTIC oxidation; Subject Term: ORGANIC oxides; Subject Term: CHEMICAL kinetics; Subject Term: HIGH temperatures; Number of Pages: 8p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2009.03031.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38711551&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Natarajan, L. V. AU - Beckel, E. R. AU - Tondiglia, V. P. AU - Sutherland, R. L. AU - White, T. J. AU - Voss, J. AU - Bunning, T. J. T1 - The Effect of Weak Polymer Stabilization on the Switching Properties of Cholesteric Liquid Crystals. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2009/05// VL - 502 IS - 1 M3 - Article SP - 143 EP - 153 SN - 15421406 AB - We examine the differences in electro-optical behavior of weakly polymer stabilized cholesteric liquid crystals (PSCLC) when formed using either a flood lit UV lamp, a flood lit UV laser, or a holographically patterned UV laser. Both samples formed with the UV laser exhibit symmetry in their dynamic electro-optical properties relative to the front and rear surface of the polymerized cell. These cells exhibit a reversible ∼100 nm blue shift tuning of the notch upon application of a field when the reflectivity is measured from either side. The UV lamp sample exhibits large differences in behavior when examined from the front or back relative to the direction of the polymerizing source. The front surface exhibits tuning of the notch while measurements from the back surface yield only the typical binary switching behavior of a CLC. The overall switching fields in flood lit UV laser and UV laser holographically patterned samples are also considerably lower. These differences are explained due to the presence of a strong polymer gradient across the cell gap in the UV lamp flood lit samples which is not present for the UV laser stabilized samples. We also present novel electro-optical results when these laser cured cells are examined in transmittance mode. Strong anchoring at the two surfaces causes a strong anisotropic local LC structure across the cell gap when a field is applied. The two local environments next to each surface act to strongly pin the CLC structure whereas within the bulk, ample reorientation of the LC molecules occurs. When probed in transmission, unusual fringe patterns which change with the strength of the applied field are observed. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROOPTICAL devices KW - POLYMER liquid crystals KW - ULTRAVIOLET lamps KW - HOLOGRAPHY KW - REFLECTANCE KW - cholesteric liquid crystal KW - electro-optical KW - holographic gratings KW - polymer stabilization N1 - Accession Number: 40738521; Natarajan, L. V. 1; Email Address: natarajanl@saic.com Beckel, E. R. 1 Tondiglia, V. P. 1 Sutherland, R. L. 1 White, T. J. 1 Voss, J. 1 Bunning, T. J. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA.; Source Info: 2009, Vol. 502 Issue 1, p143; Subject Term: ELECTROOPTICAL devices; Subject Term: POLYMER liquid crystals; Subject Term: ULTRAVIOLET lamps; Subject Term: HOLOGRAPHY; Subject Term: REFLECTANCE; Author-Supplied Keyword: cholesteric liquid crystal; Author-Supplied Keyword: electro-optical; Author-Supplied Keyword: holographic gratings; Author-Supplied Keyword: polymer stabilization; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 335120 Lighting fixture manufacturing; NAICS/Industry Codes: 335129 Other Lighting Equipment Manufacturing; Number of Pages: 11p; Illustrations: 1 Diagram, 7 Graphs; Document Type: Article L3 - 10.1080/15421400902816363 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=40738521&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Evans, D.R. AU - Cook, G. AU - Saleh, M.A. T1 - Recent advances in photorefractive two-beam coupling JO - Optical Materials JF - Optical Materials Y1 - 2009/05// VL - 31 IS - 7 M3 - Article SP - 1059 EP - 1060 SN - 09253467 AB - Abstract: In this article, we review two approaches that we have taken to improve photorefractive two-beam coupling: (1) the enhancement of the effective trap density in a well-known inorganic photorefractive crystals (KNbO3:Fe) and (2) the improvement of a relatively new concept of organic–inorganic hybridized liquid crystal cells. [Copyright &y& Elsevier] AB - Copyright of Optical Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOREFRACTIVE materials KW - CRYSTAL optics KW - LIQUID crystals KW - NIOBATES KW - ENERGY transfer KW - KNbO3 KW - Organic–inorganic hybrids KW - Photorefractives KW - Two-beam coupling N1 - Accession Number: 38319573; Evans, D.R. 1; Email Address: dean.evans@wpafb.af.mil Cook, G. 1,2 Saleh, M.A. 1,3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: Universal Technology Corporation, 1270 N. Fairfield Road, Dayton, OH 45432, USA 3: UES Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, USA; Source Info: May2009, Vol. 31 Issue 7, p1059; Subject Term: PHOTOREFRACTIVE materials; Subject Term: CRYSTAL optics; Subject Term: LIQUID crystals; Subject Term: NIOBATES; Subject Term: ENERGY transfer; Author-Supplied Keyword: KNbO3; Author-Supplied Keyword: Organic–inorganic hybrids; Author-Supplied Keyword: Photorefractives; Author-Supplied Keyword: Two-beam coupling; Number of Pages: 2p; Document Type: Article L3 - 10.1016/j.optmat.2007.11.036 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38319573&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Basu, B. T1 - Hydromagnetic waves and instabilities in kappa distribution plasma. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2009/05// VL - 16 IS - 5 M3 - Article SP - 052106 PB - American Institute of Physics SN - 1070664X AB - Stability properties of hydromagnetic waves (shear and compressional Alfven waves) in spatially homogeneous plasma are investigated when the equilibrium particle velocity distributions in both parallel and perpendicular directions (in reference to the ambient magnetic field) are modeled by kappa distributions. Analysis is presented for the limiting cases |ξα|<1 and |ξα|>1 for which solutions of the dispersion relations are analytically tractable. Here ξα(α=e,i) is the ratio of the wave phase speed and the electron (ion) thermal speed. Both low and high β (=plasma pressure/magnetic pressure) plasmas are considered. The distinguishing features of the hydromagnetic waves in kappa distribution plasma are (1) both Landau damping and transit-time damping rates are larger than those in Maxwellian plasma because of the enhanced high-energy tail of the kappa distribution and (2) density and temperature perturbations in response to the electromagnetic perturbations are different from those in Maxwellian plasma when |ξα|<1. Moreover, frequency of the oscillatory stable modes (e.g., kinetic shear Alfven wave) and excitation condition of the nonoscillatory (zero frequency) unstable modes (e.g., mirror instability) in kappa distribution plasma are also different from those in Maxwellian plasma. Quantitative estimates of the differences depend on the specific choice of the kappa distribution. For simplicity of notations, same spectral indices κ∥ and κ⊥ have been assumed for both electron and ion population. However, the analysis can be easily generalized to allow for different values of the spectral indices for the two charged populations. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETOHYDRODYNAMIC waves KW - EQUILIBRIUM KW - PLASMA (Ionized gases) KW - DISTRIBUTION (Probability theory) KW - LANDAU damping KW - SPECTRUM analysis KW - PERTURBATION (Quantum dynamics) N1 - Accession Number: 40637870; Basu, B. 1; Affiliation: 1: Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731, USA; Source Info: May2009, Vol. 16 Issue 5, p052106; Subject Term: MAGNETOHYDRODYNAMIC waves; Subject Term: EQUILIBRIUM; Subject Term: PLASMA (Ionized gases); Subject Term: DISTRIBUTION (Probability theory); Subject Term: LANDAU damping; Subject Term: SPECTRUM analysis; Subject Term: PERTURBATION (Quantum dynamics); Number of Pages: 11p; Illustrations: 1 Graph; Document Type: Article L3 - 10.1063/1.3132629 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=40637870&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harrison, Richard A. AU - Davies, Jackie A. AU - Rouillard, Alexis P. AU - Davis, Christopher J. AU - Eyles, Christopher J. AU - Bewsher, Danielle AU - Crothers, Steve R. AU - Howard, Russell A. AU - Sheeley, Neil R. AU - Vourlidas, Angelos AU - Webb, David F. AU - Brown, Daniel S. AU - Dorrian, Gareth D. T1 - Two Years of the STEREO Heliospheric Imagers. JO - Solar Physics JF - Solar Physics Y1 - 2009/05// VL - 256 IS - 1/2 M3 - Article SP - 219 EP - 237 PB - Springer Science & Business Media B.V. SN - 00380938 AB - Imaging of the heliosphere is a burgeoning area of research. As a result, it is awash with new results, using novel applications, and is demonstrating great potential for future research in a wide range of topical areas. The STEREO ( Solar TErrestrial RElations Observatory) Heliospheric Imager (HI) instruments are at the heart of this new development, building on the pioneering observations of the SMEI (Solar Mass Ejection Imager) instrument aboard the Coriolis spacecraft. Other earlier heliospheric imaging systems have included ground-based interplanetary scintillation (IPS) facilities and the photometers on the Helios spacecraft. With the HI instruments, we now have routine wide-angle imaging of the inner heliosphere, from vantage points outside the Sun-Earth line. HI has been used to investigate the development of coronal mass ejections (CMEs) as they pass through the heliosphere to 1 AU and beyond. Synoptic mapping has also allowed us to see graphic illustrations of the nature of mass outflow as a function of distance from the Sun – in particular, stressing the complexity of the near-Sun solar wind. The instruments have also been used to image co-rotating interaction regions (CIRs), to study the interaction of comets with the solar wind and CMEs, and to witness the impact of CMEs and CIRs on planets. The very nature of this area of research – which brings together aspects of solar physics, space-environment physics, and solar-terrestrial physics – means that the research papers are spread among a wide range of journals from different disciplines. Thus, in this special issue, it is timely and appropriate to provide a review of the results of the first two years of the HI investigations. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR activity KW - GEOPHYSICS KW - HELIOSPHERE (Astrophysics) KW - CORONAL mass ejections KW - SOLAR corona KW - Co-rotating interaction regions KW - Coronal mass ejection KW - Heliosphere KW - Solar wind N1 - Accession Number: 38313301; Harrison, Richard A. 1; Email Address: r.harrison@rl.ac.uk Davies, Jackie A. 1 Rouillard, Alexis P. 1,2 Davis, Christopher J. 1 Eyles, Christopher J. 1,3,4 Bewsher, Danielle 1,5 Crothers, Steve R. 1 Howard, Russell A. 6 Sheeley, Neil R. 6 Vourlidas, Angelos 6 Webb, David F. 7,8 Brown, Daniel S. 5 Dorrian, Gareth D. 5; Affiliation: 1: Space Science and Technology Department, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX UK 2: Space Environment Physics Group, School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ UK 3: School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT UK 4: Laboratorio de Procesado de Imagenes, Universidad de Valencia, 46071 Valencia, Spain 5: Institute of Mathematics and Physics, Aberystwyth University, Penglais, Aberystwyth, SY23 3BZ UK 6: Space Science Division, Naval Research Laboratory, Washington DC, USA 7: Institute for Scientific Research, Boston College, Chestnut Hill, MA, USA 8: Air Force Research Laboratory, Hanscom, AFB, MA, USA; Source Info: May2009, Vol. 256 Issue 1/2, p219; Subject Term: SOLAR activity; Subject Term: GEOPHYSICS; Subject Term: HELIOSPHERE (Astrophysics); Subject Term: CORONAL mass ejections; Subject Term: SOLAR corona; Author-Supplied Keyword: Co-rotating interaction regions; Author-Supplied Keyword: Coronal mass ejection; Author-Supplied Keyword: Heliosphere; Author-Supplied Keyword: Solar wind; Number of Pages: 19p; Illustrations: 3 Color Photographs, 4 Black and White Photographs, 1 Diagram, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1007/s11207-009-9352-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38313301&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Webb, D. F. AU - Howard, T. A. AU - Fry, C. D. AU - Kuchar, T. A. AU - Odstrcil, D. AU - Jackson, B. V. AU - Bisi, M. M. AU - Harrison, R. A. AU - Morrill, J. S. AU - Howard, R. A. AU - Johnston, J. C. T1 - Study of CME Propagation in the Inner Heliosphere: SOHO LASCO, SMEI and STEREO HI Observations of the January 2007 Events. JO - Solar Physics JF - Solar Physics Y1 - 2009/05// VL - 256 IS - 1/2 M3 - Article SP - 239 EP - 267 PB - Springer Science & Business Media B.V. SN - 00380938 AB - We are investigating the geometric and kinematic characteristics of interplanetary coronal mass ejections (ICMEs) using data obtained by the LASCO coronagraphs, the Solar Mass Ejection Imager (SMEI), and the SECCHI imaging experiments on the STEREO spacecraft. The early evolution of CMEs can be tracked by the LASCO C2 and C3 and SECCHI COR1 and COR2 coronagraphs, and the HI and SMEI instruments can track their ICME counterparts through the inner heliosphere. The HI fields of view (4 – 90°) overlap with the SMEI field of view (> 20° to all sky) and, thus, both instrument sets can observe the same ICME. In this paper we present results for ICMEs observed on 24 – 29 January 2007, when the STEREO spacecraft were still near Earth so that both the SMEI and STEREO views of large ICMEs in the inner heliosphere coincided. These results include measurements of the structural and kinematic evolution of two ICMEs and comparisons with drive/drag kinematic, 3D tomographic reconstruction, the HAFv2 kinematic, and the ENLIL MHD models. We find it encouraging that the four model runs generally were in agreement on both the kinematic evolution and appearance of the events. Because it is essential to understand the effects of projection across large distances, that are not generally crucial for events observed closer to the Sun, we discuss our analysis procedure in some detail. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR activity KW - CORONAL mass ejections KW - HELIOSPHERE (Astrophysics) KW - CORONAGRAPHS KW - SPACE vehicles KW - Corona KW - Coronal mass ejections KW - Interplanetary plasma N1 - Accession Number: 38313299; Webb, D. F. 1,2; Email Address: david.webb@hanscom.af.mil Howard, T. A. 3 Fry, C. D. 4 Kuchar, T. A. 1,2 Odstrcil, D. 5,6 Jackson, B. V. 7 Bisi, M. M. 7 Harrison, R. A. 8 Morrill, J. S. 9 Howard, R. A. 9 Johnston, J. C. 2; Affiliation: 1: Institute for Scientific Research, Boston College, Chestnut Hill, MA, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA, USA 3: Air Force Research Laboratory, National Solar Observatory, Sunspot, NM, USA 4: Exploration Physics International, Inc., Huntsville, AL, USA 5: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA 6: Space Weather Prediction Center, National Oceanic and Atmospheric Administration, Boulder, CO, USA 7: Center for Astrophysics and Space Science, University of California-San Diego, La Jolla, CA, USA 8: Space Physics Division, Space Science and Technology Dept., Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, UK 9: Space Science Division, Code 7663, Naval Research Laboratory, Washington, DC, USA; Source Info: May2009, Vol. 256 Issue 1/2, p239; Subject Term: SOLAR activity; Subject Term: CORONAL mass ejections; Subject Term: HELIOSPHERE (Astrophysics); Subject Term: CORONAGRAPHS; Subject Term: SPACE vehicles; Author-Supplied Keyword: Corona; Author-Supplied Keyword: Coronal mass ejections; Author-Supplied Keyword: Interplanetary plasma; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 29p; Illustrations: 3 Color Photographs, 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1007/s11207-009-9351-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38313299&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, C. O. AU - Luhmann, J. G. AU - Zhao, X. P. AU - Liu, Y. AU - Riley, P. AU - Arge, C. N. AU - Russell, C. T. AU - de Pater, I. T1 - Effects of the Weak Polar Fields of Solar Cycle 23: Investigation Using OMNI for the STEREO Mission Period. JO - Solar Physics JF - Solar Physics Y1 - 2009/05// VL - 256 IS - 1/2 M3 - Article SP - 345 EP - 363 PB - Springer Science & Business Media B.V. SN - 00380938 AB - The current solar cycle minimum seems to have unusual properties that appear to be related to weak solar polar magnetic fields. We investigate signatures of this unusual polar field in the ecliptic near-Earth interplanetary magnetic field (IMF) for the STEREO period of observations. Using 1 AU OMNI data, we find that for the current solar cycle declining phase to minimum period the peak of the distribution for the values of the ecliptic IMF magnitude is lower compared to a similar phase of the previous solar cycle. We investigate the sources of these weak fields. Our results suggest that they are related to the solar wind stream structure, which is enhanced by the weak polar fields. The direct role of the solar field is therefore complicated by this effect, which redistributes the solar magnetic flux at 1 AU nonuniformly at low to mid heliolatitudes. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR activity KW - MAGNETIC fields KW - COSMIC magnetic fields KW - ASTROPHYSICS KW - ASTRONOMY KW - Magnetic fields, interplanetary KW - Magnetic fields, observations KW - Magnetic fields; observations KW - Magnetic fields;interplanetary KW - Solar cycle, models KW - Solar cycle, observations KW - Solar cycle;models KW - Solar cycle;observations KW - Solar wind KW - STEREO mission N1 - Accession Number: 38313313; Lee, C. O. 1,2; Email Address: clee@ssl.berkeley.edu Luhmann, J. G. 1; Email Address: jgluhman@ssl.berkeley.edu Zhao, X. P. 3; Email Address: xpzhao@solar.stanford.edu Liu, Y. 3; Email Address: yliu@solar.stanford.edu Riley, P. 4; Email Address: pete@predsci.com Arge, C. N. 5; Email Address: nick.arge@kirtland.af.mil Russell, C. T. 6; Email Address: ctrussell@igpp.ucla.edu de Pater, I. 2; Email Address: imke@astron.berkeley.edu; Affiliation: 1: Space Sciences Laboratory, University of California, Berkeley, CA, USA 2: Department of Earth and Planetary Science, University of California, Berkeley, CA, USA 3: W. W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA, USA 4: Predictive Science, Inc., San Diego, CA, USA 5: Air Force Research Laboratory/Space Vehicles Directorate, Kirtland Air Force Base, NM, USA 6: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA, USA; Source Info: May2009, Vol. 256 Issue 1/2, p345; Subject Term: SOLAR activity; Subject Term: MAGNETIC fields; Subject Term: COSMIC magnetic fields; Subject Term: ASTROPHYSICS; Subject Term: ASTRONOMY; Author-Supplied Keyword: Magnetic fields, interplanetary; Author-Supplied Keyword: Magnetic fields, observations; Author-Supplied Keyword: Magnetic fields; observations; Author-Supplied Keyword: Magnetic fields;interplanetary; Author-Supplied Keyword: Solar cycle, models; Author-Supplied Keyword: Solar cycle, observations; Author-Supplied Keyword: Solar cycle;models; Author-Supplied Keyword: Solar cycle;observations; Author-Supplied Keyword: Solar wind; Author-Supplied Keyword: STEREO mission; Number of Pages: 19p; Illustrations: 18 Graphs; Document Type: Article L3 - 10.1007/s11207-009-9345-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38313313&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gibson, Glen AU - Campbell, James AU - Kennedy, Lisa T1 - Fifty-One Years of Shoreline Change at Little Lagoon, Alabama. (Cover story) JO - Southeastern Geographer JF - Southeastern Geographer Y1 - 2009///Spring2009 VL - 49 IS - 1 M3 - Article SP - 67 EP - 83 PB - University of North Carolina Press SN - 0038366X AB - In Alabama the term ''coastal shoreline'' applies to the Gulf shoreline and the shorelines of estuaries, bays, and sounds connected to the Gulf of Mexico and subject to its tides. However, Alabama shoreline studies have yet to include Little Lagoon, which has been connected to the Gulf of Mexico for most of the last 200 years according to historical charts. This study presents an analysis of shoreline change on Little Lagoon based on aerial photographs dating from 1955 to 2006. All images were georeferenced, projected, and digitized in a Geographic Information System to create sliver polygons that represented areas of change. The net change in lagoon size between 1955 and 2006 was relatively small (-0.4 percent), but significant changes occurred when evaluated on a larger scale. The greatest changes to Little Lagoon were found on its southern shoreline near tidal inlets, human development, and hurricane overwash fans. [ABSTRACT FROM AUTHOR] AB - Copyright of Southeastern Geographer is the property of University of North Carolina Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHORELINES KW - ESTUARIES KW - POLYGONS KW - AERIAL photographs KW - ALABAMA KW - lagoons KW - overwash fans KW - shoreline change KW - sliver polygons KW - tidal inlets N1 - Accession Number: 36428737; Gibson, Glen 1; Email Address: glen.gibson@usafa.edu Campbell, James 2; Email Address: jayhawk@vt.edu Kennedy, Lisa 2; Email Address: likenne8@vt.edu; Affiliation: 1: United States Air Force Academy 2: Virginia Polytechnic Institute and State University; Source Info: Spring2009, Vol. 49 Issue 1, p67; Subject Term: SHORELINES; Subject Term: ESTUARIES; Subject Term: POLYGONS; Subject Term: AERIAL photographs; Subject Term: ALABAMA; Author-Supplied Keyword: lagoons; Author-Supplied Keyword: overwash fans; Author-Supplied Keyword: shoreline change; Author-Supplied Keyword: sliver polygons; Author-Supplied Keyword: tidal inlets; Number of Pages: 17p; Illustrations: 6 Black and White Photographs, 2 Charts, 4 Maps; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36428737&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anthony J. Midey AU - Thomas M. Miller AU - A. A. Viggiano T1 - Kinetics of Ion−Molecule Reactions with Dimethyl Methylphosphonate at 298 K for Chemical Ionization Mass Spectrometry Detection of GX. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2009/04/30/ VL - 113 IS - 17 M3 - Article SP - 4982 EP - 4989 SN - 10895639 AB - Kinetics studies of a variety of positive and negative ions reacting with the GX surrogate, dimethyl methylphosphonate (DMMP), were performed. All protonated species reacted rapidly, that is, at the collision limit. The protonated reactant ions created from neutrals with proton affinities (PAs) less than or equal to the PA for ammonia reacted exclusively by nondissociative proton transfer. Hydrated H3O+ions also reacted rapidly by proton transfer, with 25% of the products from the second hydrate, H3O+(H2O)2, forming the hydrated form of protonated DMMP. Both methylamine and triethylamine reacted exclusively by clustering. NO+also clustered with DMMP at about 70% of the collision rate constant. O+and O2+formed a variety of products in reactions with DMMP, with O2+forming the nondissociative charge transfer product about 50% of the time. On the other hand, many negative ions were less reactive, particularly, SF5−, SF6−, CO3−, and NO3−. However, F−, O−, and O2−all reacted rapidly to generate m/z= 109 amu anions (PO3C2H6−). In addition, product ions with m/z= 122 amu from H2+loss to form H2O were the dominant ions produced in the O−reaction. NO2−underwent a slow association reaction with DMMP at 0.4 Torr. G3(MP2) calculations of the ion energetics properties of DMMP, sarin, and soman were also performed. The calculated ionization potentials, proton affinities, and fluoride affinities were consistent with the trends in the measured kinetics and product ion branching ratios. The experimental results coupled with the calculated ion energetics helped to predict which ion chemistry would be most useful for trace detection of the actual chemical agents. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL kinetics KW - ORGANIC compounds KW - CHEMICAL ionization mass spectrometry KW - PROTON transfer reactions KW - OXONIUM ions KW - CHARGE transfer KW - CHEMICAL reactions N1 - Accession Number: 38222406; Anthony J. Midey 1 Thomas M. Miller 1 A. A. Viggiano 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom AFB, Massachusetts 01731-3010; Source Info: Apr2009, Vol. 113 Issue 17, p4982; Subject Term: CHEMICAL kinetics; Subject Term: ORGANIC compounds; Subject Term: CHEMICAL ionization mass spectrometry; Subject Term: PROTON transfer reactions; Subject Term: OXONIUM ions; Subject Term: CHARGE transfer; Subject Term: CHEMICAL reactions; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38222406&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - LeardMann, Cynthia A. AU - Smith, Tyler C. AU - Smith, Besa AU - Wells, Timothy S. AU - Ryan, Margaret A.K. T1 - Baseline self reported functional health and vulnerability to post-traumatic stress disorder after combat deployment: prospective US military cohort study. JO - BMJ: British Medical Journal (Overseas & Retired Doctors Edition) JF - BMJ: British Medical Journal (Overseas & Retired Doctors Edition) Y1 - 2009/04/25/ VL - 338 IS - 7701 M3 - Article SP - 992 EP - 995 SN - 17592151 AB - Objective To determine if baseline functional health status, as measured by SF-36 (veterans), predicts new onset symptoms or diagnosis of post-traumatic stress disorder among deployed US military personnel with combat exposure. Design Prospective cohort analysis. Setting Millennium Cohort. I Participants Combat deployed members who completed baseline (2001-3) and follow-up (2004-6) elect questionnaires. Self reported and electronic data used to examine the relation between functional health and post- traumatic stress disorder. Main outcome measures New onset post-traumatic stress disorder as measured by either meeting the DSM-IV criteria with the 17 item post-traumatic stress disorder checklist-civilian version or self report of a physician diagnosis at follow-up with the absence of both at baseline. Results Of the 5410 eligible participants, 395 (7.3%) had new onset symptoms or diagnosis of post-traumatic stress disorder at the time of follow-up. Individuals whose baseline mental or physical component summary scores were below the 15th centile had two to three times the risk of symptoms or a diagnosis of post-traumatic stress disorder by follow-up compared with those in the 15th to 85th centile. Of those with new onset symptoms or diagnosis of post-traumatic stress disorder, over half (58%) of cases occurred among participants with scores below the 15th centile at baseline. Conclusions Low mental or physical health status before combat exposure significantly increases the risk of symptoms or diagnosis of post-traumatic stress disorder after deployment. More vulnerable members of a population could be identified and benefit from interventions targeted to prevent new onset post- traumatic stress disorder. [ABSTRACT FROM AUTHOR] AB - Copyright of BMJ: British Medical Journal (Overseas & Retired Doctors Edition) is the property of BMJ Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POST-traumatic stress disorder KW - OUTCOME assessment (Medical care) KW - MILITARY personnel -- Health KW - HEALTH risk assessment KW - VETERANS -- Psychology KW - PATHOLOGICAL psychology KW - STRESS (Psychology) KW - COMBAT -- Psychological aspects KW - RISK factors N1 - Accession Number: 39141984; LeardMann, Cynthia A. 1; Email Address: Cynthia.LeardMann@med.navy.mil Smith, Tyler C. 1 Smith, Besa 1 Wells, Timothy S. 2 Ryan, Margaret A.K. 3; Affiliation: 1: Department of Defense Center for Deployment Health Research, Naval Health Research Center, 140 Sylvester Road, San Diego, CA 92106, USA 2: Biosciences and Protection Division, Air Force Research Laboratory, Wright-Patterson Air Force Base, 2800 Q Street, OH 45433, USA 3: Naval Hospital Camp Pendieton, Box 555191, CA 92055, USA; Source Info: 4/25/2009, Vol. 338 Issue 7701, p992; Subject Term: POST-traumatic stress disorder; Subject Term: OUTCOME assessment (Medical care); Subject Term: MILITARY personnel -- Health; Subject Term: HEALTH risk assessment; Subject Term: VETERANS -- Psychology; Subject Term: PATHOLOGICAL psychology; Subject Term: STRESS (Psychology); Subject Term: COMBAT -- Psychological aspects; Subject Term: RISK factors; NAICS/Industry Codes: 923120 Administration of Public Health Programs; NAICS/Industry Codes: 923140 Administration of Veterans' Affairs; Number of Pages: 4p; Illustrations: 1 Chart; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=39141984&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Xue, Liang AU - Brueck, S. R. J. AU - Kaspi, R. T1 - Widely tunable distributed-feedback lasers with chirped gratings. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2009/04/20/ VL - 94 IS - 16 M3 - Article SP - 161102 PB - American Institute of Physics SN - 00036951 AB - A quasicontinuous tuning range of 65 nm at 3.2 μm was obtained for continuous wave, single-longitudinal-mode operation at 77 K of an optically pumped distributed-feedback laser with a chirped grating. Interferometric lithography with spherical wavefronts was used to fabricate a large-area chirped grating whose period varied continuously in the direction of the grating lines. Tuning was achieved by translating the optical pump stripe relative to the device to activate regions with different grating periods. Methane absorption spectra, obtained using this tunable distributed-feedback laser, closely match the high-resolution transmission molecular absorption database simulations. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - LITHOGRAPHY KW - RESEARCH KW - OPTICAL pumping KW - METHANE KW - ABSORPTION spectra N1 - Accession Number: 38225341; Xue, Liang 1; Email Address: xueliang@chtm.unm.edu Brueck, S. R. J. 1; Email Address: brueck@chtm.unm.edu Kaspi, R. 2; Email Address: ron.kaspi@kirtland.af.mi; Affiliation: 1: Department of Electrical and Computer Engineering and Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87106, USA 2: Air Force Research Laboratory, Directed Energy Directorate, Kirtland Air Force Base, Albuquerque, New Mexico 87117, USA; Source Info: 4/20/2009, Vol. 94 Issue 16, p161102; Subject Term: LASERS; Subject Term: LITHOGRAPHY; Subject Term: RESEARCH; Subject Term: OPTICAL pumping; Subject Term: METHANE; Subject Term: ABSORPTION spectra; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 323119 Other printing; Number of Pages: 3p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.3123813 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38225341&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boxx, I. AU - Stöhr, M. AU - Carter, C. AU - Meier, W. T1 - Sustained multi-kHz flamefront and 3-component velocity-field measurements for the study of turbulent flames. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2009/04/15/ VL - 95 IS - 1 M3 - Article SP - 23 EP - 29 PB - Springer Science & Business Media B.V. SN - 09462171 AB - We describe an approach of imaging the dynamic interaction of the flamefront and flowfield. Here, a diode-pumped Nd:YLF laser operating at 5 kHz is used to pump a dye laser, which is then frequency doubled to 283 nm to probe flamefront OH, while a dual cavity diode-pumped Nd:YAG system produces pulse-pairs for particle image velocimetry (PIV). CMOS digital cameras are used to detect both planar laser-induced fluorescence (PLIF) and particle scattering (in a stereo arrangement) such that a 5 kHz measurement frequency is attained. This diagnostic is demonstrated in lifted-jet and swirl-stabilized flames, wherein the dynamics of the flame stabilization processes are seen. Nonperiodic effects such as local ignition and/or extinction, lift-off and flashback events, and their histories can be captured by this technique. As such, this system has the potential to significantly extend our understanding of nonstationary combustion processes relevant to industrial and technical applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS -- Industrial applications KW - DIODES KW - PARTICLE image velocimetry KW - FLAME KW - DIGITAL cameras KW - 47.70.Pq KW - 47.80.Jk N1 - Accession Number: 37031027; Boxx, I. 1; Email Address: Isaac.Boxx@dlr.de Stöhr, M. 1 Carter, C. 2 Meier, W. 1; Affiliation: 1: Institut für Verbrennungstechnik, Deutsches Zentrum für Luft-und Raumfahrt (DLR), Pfaffenwaldring 38-40 70569 Stuttgart Germany 2: Air Force Research Laboratory (AFRL)/RZAS, 1950 Fifth St Wright-Patterson AFB USA; Source Info: Apr2009, Vol. 95 Issue 1, p23; Subject Term: LASERS -- Industrial applications; Subject Term: DIODES; Subject Term: PARTICLE image velocimetry; Subject Term: FLAME; Subject Term: DIGITAL cameras; Author-Supplied Keyword: 47.70.Pq; Author-Supplied Keyword: 47.80.Jk; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 7p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1007/s00340-009-3420-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37031027&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pan, E. AU - Wang, X. AU - Albrecht, J. D. T1 - Time-decaying magnetoelectric effects in multiferroic fibrous composites with a viscous interface. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2009/04/15/ VL - 105 IS - 8 M3 - Article SP - 083510 EP - 083516 PB - American Institute of Physics SN - 00218979 AB - This paper addresses the time-dependent magnetoelectroelastic responses of multiferroic fibrous composites with a viscous interface. First, the problem of an isolated multiferroic fiber embedded in an infinite multiferroic matrix is rigorously solved. It is observed that the internal magnetoelectroelastic field such as stresses, electric displacements, and magnetic inductions inside an isolated multiferroic fiber is uniform but time dependent. The Mori–Tanaka mean-field method is then utilized to derive an extremely concise expression of the time-dependent effective moduli of the multiferroic fibrous composite. The numerical results demonstrate that the viscosity of the interface will cause a time-decaying magnetoelectric effect of the BaTiO3–CoFe2O4 fibrous composite. As the time approaches infinity the magnetoelectric effect will approach zero due to the fact that a viscous interface will finally evolve into a free-sliding one which does not sustain shear stress. This interesting feature should be particularly important to the analysis and design of multiferroic composites where the interface is utilized to enhance the magnetoelectric effect. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIBROUS composites KW - MAGNETIC induction KW - ELECTRIC displacement KW - VISCOSITY KW - MATHEMATICAL models KW - MAGNETIC flux N1 - Accession Number: 38611853; Pan, E. 1 Wang, X. 1 Albrecht, J. D. 2; Affiliation: 1: Computer Modeling and Simulation Group, College of Engineering, University of Akron, Akron, Ohio 44325-3905, 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: Apr2009, Vol. 105 Issue 8, p083510; Subject Term: FIBROUS composites; Subject Term: MAGNETIC induction; Subject Term: ELECTRIC displacement; Subject Term: VISCOSITY; Subject Term: MATHEMATICAL models; Subject Term: MAGNETIC flux; Number of Pages: 6p; Illustrations: 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1063/1.3089213 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38611853&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lu, Y. AU - Tandon, G. AU - Putthanarat, S. AU - Schoeppner, G. T1 - Nanoindentation strain rate sensitivity of thermo-oxidized PMR-15 polyimide. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2009/04/15/ VL - 44 IS - 8 M3 - Article SP - 2119 EP - 2127 PB - Springer Science & Business Media B.V. SN - 00222461 AB - This article reports the study of rate-dependent mechanical properties of thermal-oxidized PMR-15 polyimide resins with a nanoindenter. A series of PMR-15 resin specimens have been isothermally aged at various temperatures, times, and pressures. The strain rate sensitivity of oxidized surface layer obtained at each aging condition has been determined from nanoindentation creep experiments using constant displacement-rate $$ \left( {\dot{h}} \right) $$ method. Results show that the average strain rate sensitivity in the oxidized surface layer is notably higher than that in the unoxidized interior, indicating that the oxidized surface layer has limited ductility and thus is susceptible to fracture. Effects of aging environments (time, temperature, and pressure) on mechanical properties are also examined. After passing the initial oxidation stage, the change in strain rate sensitivity become insignificant and less sensitive to aging parameters. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYIMIDES KW - THERMOPLASTICS KW - MATERIALS -- Mechanical properties KW - STRAINS & stresses (Mechanics) KW - CREEP (Materials) KW - OXIDATION N1 - Accession Number: 37030951; Lu, Y. 1; Email Address: chlu@engr.uky.edu Tandon, G. 2 Putthanarat, S. 2 Schoeppner, G. 3; Affiliation: 1: University of Kentucky, Lexington USA 2: University of Dayton Research Institute, Dayton USA 3: Air Force Research Laboratory, Wright Patterson AFB USA; Source Info: Apr2009, Vol. 44 Issue 8, p2119; Subject Term: POLYIMIDES; Subject Term: THERMOPLASTICS; Subject Term: MATERIALS -- Mechanical properties; Subject Term: STRAINS & stresses (Mechanics); Subject Term: CREEP (Materials); Subject Term: OXIDATION; Number of Pages: 9p; Illustrations: 1 Diagram, 11 Graphs; Document Type: Article L3 - 10.1007/s10853-009-3311-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37030951&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Spearot, D.E. AU - Tschopp, M.A. AU - McDowell, D.L. T1 - Orientation and rate dependence of dislocation nucleation stress computed using molecular dynamics JO - Scripta Materialia JF - Scripta Materialia Y1 - 2009/04/15/ VL - 60 IS - 8 M3 - Article SP - 675 EP - 678 SN - 13596462 AB - Molecular dynamics simulations are used to investigate orientation and rate dependence of partial dislocation nucleation in Cu. As the strain rate is reduced from 109 to 107 s−1, the tensile stress required for homogeneous dislocation nucleation is reduced by at most 5%. Furthermore, mild orientation sensitivity is observed in the rate dependence of the critical tensile stress. The computed resolved shear stress for partial dislocation nucleation is consistent with previous ab initio calculations of the theoretical shear strength of Cu. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISLOCATIONS in metals KW - NUCLEATION KW - MOLECULAR dynamics KW - DEFORMATIONS (Mechanics) KW - SHEAR (Mechanics) KW - STRAINS & stresses (Mechanics) KW - Dislocation theory KW - Molecular dynamics KW - Plastic deformation KW - Theoretical shear strength N1 - Accession Number: 36611836; Spearot, D.E. 1; Email Address: dspearot@uark.edu Tschopp, M.A. 2 McDowell, D.L. 3,4; Affiliation: 1: Department of Mechanical Engineering, University of Arkansas, Fayetteville, AR 72701, USA 2: Air Force Research Laboratory RXLMN (UTC), Wright-Patterson Air Force Base, Dayton, OH 45433, USA 3: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405, USA 4: G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405, USA; Source Info: Apr2009, Vol. 60 Issue 8, p675; Subject Term: DISLOCATIONS in metals; Subject Term: NUCLEATION; Subject Term: MOLECULAR dynamics; Subject Term: DEFORMATIONS (Mechanics); Subject Term: SHEAR (Mechanics); Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: Dislocation theory; Author-Supplied Keyword: Molecular dynamics; Author-Supplied Keyword: Plastic deformation; Author-Supplied Keyword: Theoretical shear strength; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2008.12.037 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36611836&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adams, S. F. AU - DeJoseph, C. A. AU - Williamson, J. M. T1 - Formation and electron-ion recombination of N4+ following photoionization in near-atmospheric pressure N2. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2009/04/14/ VL - 130 IS - 14 M3 - Article SP - 144316 PB - American Institute of Physics SN - 00219606 AB - The time dependent behavior of molecular nitrogen ions has been investigated following pulsed photoionization of near atmospheric pressure N2 using multiphoton laser techniques and kinetic modeling. Multiple fluorescence bands, some unreported previously, with various temporal behaviors were observed after ultraviolet laser photoionization of N2(X 1Σg). The initial N2 ionization was generated via resonance-enhanced multiphoton ionization with focused radiation in the 275–290 nm range, where several resonant transitions are accessible. The observed optical fluorescence bands appeared to be unique to the near-atmospheric pressure N2 condition and were shown by the evidence in this work to be the result of collisional formation and recombination of N4+. Measured time dependent fluorescence spectra during and after pulsed laser photoionization of N2, together with a coupled rate equation model, allowed for the determination of the absolute densities of N2+ and N4+ as these species evolved. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON-ion collisions KW - PHOTOIONIZATION KW - FLUORESCENCE KW - RESEARCH KW - IONIZATION (Atomic physics) KW - COLLISIONS (Nuclear physics) KW - NITROGEN N1 - Accession Number: 37597957; Adams, S. F. 1; Email Address: steven.adams@wpafb.af.mil DeJoseph, C. A. 1 Williamson, J. M. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 2: ISSI Inc., Dayton, Ohio 45440-3638, USA; Source Info: 4/14/2009, Vol. 130 Issue 14, p144316; Subject Term: ELECTRON-ion collisions; Subject Term: PHOTOIONIZATION; Subject Term: FLUORESCENCE; Subject Term: RESEARCH; Subject Term: IONIZATION (Atomic physics); Subject Term: COLLISIONS (Nuclear physics); Subject Term: NITROGEN; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 9p; Illustrations: 1 Diagram, 1 Chart, 11 Graphs; Document Type: Article L3 - 10.1063/1.3097757 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37597957&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - L. G. Scanlon AU - W. A. Feld AU - P. B. Balbuena AU - G. Sandi AU - X. Duan AU - K. A. Underwood AU - N. Hunter AU - J. Mack AU - M. A. Rottmayer AU - M. Tsao T1 - Hydrogen Storage Based on Physisorption. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2009/04/09/ VL - 113 IS - 14 M3 - Article SP - 4708 EP - 4717 SN - 15206106 AB - Physisorption of molecular hydrogen based on neutral and negatively charged aromatic molecular systems has been evaluated using ab initio calculations to estimate the binding energy, ΔH, and ΔGat 298 (∼77 bar) and 77 K (45 bar) in order to compare calculated results with experimental measurements of hydrogen adsorption. The molecular systems used in this study were corannulene (C20H10), dicyclopenta[def,jkl]triphenylene (C20H10), 5,8-dioxo-5,8-dihydroindeno[2,1-c]fluorene (C20H10O2), 6-hexyl-5,8-dioxo-5,8-dihydroindeno[2,1-c]fluorene (C26H22O2), coronene (C24H12), dilithium phthalocyanine (Li2Pc, C32H16Li2N8), tetrabutylammonium lithium phthalocyanine (TBA-LiPc, C48H52LiN9), and tetramethylammonium lithium phthalocyanine (TMA-LiPc, C36H28LiN9). It was found (a) that the calculated term that corrects 0 K electronic energies to give Gibbs energies (thermal correction to Gibbs energy, TCGE) serves as a good approximation of the adsorbent binding energy required in order for a physisorption process to be thermodynamically allowed and (b) that the binding energy for neutral aromatic molecules varies as a function of curvature (e.g., corannulene versus coronene) or if electron-withdrawing or -donating groups are part of the adsorbent. A negatively charged aromatic ring, the lithium phthalocyanine complex anion, [LiPc]−, introduces charge-induced dipole interactions into the adsorption process, resulting in a doubling of the binding energy of Li2Pc relative to corannulene. Experimental hydrogen adsorption results for Li2Pc, which are consistent with MD simulation results using χ-Li2Pc to simulate the adsorbent, suggest that only one side of the phthalocyanine ring is used in the adsorption process. The introduction of a tetrabutylammonium cation as a replacement for one lithium ion in Li2Pc has the effect of increasing the number of hydrogen molecules adsorbed from 10 (3.80 wt %) for Li2Pc to 24 (5.93 wt %) at 77 K and 45 bar, suggesting that both sides of the phthalocyanine ring are available for hydrogen adsorption. MD simulations of layered tetramethylammonium lithium phthalocyanine molecular systems illustrate that doubling the wt % H2adsorbed is possible via such a system. Ab initio calculations also suggest that layered or sandwich structures can result in significant reductions in the pressure required for hydrogen adsorption. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSISORPTION KW - HYDROGEN KW - AROMATIC compounds KW - BINDING energy KW - CHEMICAL systems KW - GIBBS' free energy KW - APPROXIMATION theory N1 - Accession Number: 37342909; L. G. Scanlon 1 W. A. Feld 1 P. B. Balbuena 1 G. Sandi 1 X. Duan 1 K. A. Underwood 1 N. Hunter 1 J. Mack 1 M. A. Rottmayer 1 M. Tsao 1; Affiliation: 1: Air Force Research Laboratory, Electrochemistry & Thermal Sciences Branch, Wright-Patterson AFB, Ohio 45433, Department of Chemistry, Wright State University, Dayton, Ohio 45435, Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, Chemistry Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, Air Force Research Laboratory, Major Shared Resource Center, Wright-Patterson AFB, Ohio 45433, and Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221; Source Info: Apr2009, Vol. 113 Issue 14, p4708; Subject Term: PHYSISORPTION; Subject Term: HYDROGEN; Subject Term: AROMATIC compounds; Subject Term: BINDING energy; Subject Term: CHEMICAL systems; Subject Term: GIBBS' free energy; Subject Term: APPROXIMATION theory; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37342909&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Sukesh AU - Richardson, Daniel AU - Kinnius, Paul J. AU - Lucht, Robert P. AU - Gord, James R. T1 - Effects of N2–CO polarization beating on femtosecond coherent anti-Stokes Raman scattering spectroscopy of N2. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2009/04/06/ VL - 94 IS - 14 M3 - Article SP - 144101 PB - American Institute of Physics SN - 00036951 AB - The effects of broadband excitation employing femtosecond laser pulses on the coherent anti-Stokes Raman scattering (CARS) spectroscopy of N2 are investigated. We have previously demonstrated that the dephasing rate of the coherence, established by the impulsive excitation of N2 using femtosecond pump and Stokes beams, can be used for measuring gas-phase temperature in chemically reacting flows. The objective of the current work is to investigate the effects of polarization beating between N2 and CO on the measured gas-phase temperature using time-resolved femtosecond CARS spectroscopy of N2. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLARIZATION (Electricity) KW - NITROGEN KW - CARBON monoxide KW - RAMAN effect KW - RAMAN spectroscopy KW - TEMPERATURE N1 - Accession Number: 37580352; Roy, Sukesh 1; Email Address: sroy@woh.rr.com Richardson, Daniel 2 Kinnius, Paul J. 2 Lucht, Robert P. 2 Gord, James R. 3; Affiliation: 1: Spectral Energies, LLC, 5100 Springfield Street, Ste. 301, Dayton, Ohio 45431, USA 2: School of Mechanical Engineering, Purdue University, 585 Purdue Mall, West Lafayette, Indiana 47907, USA 3: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 4/6/2009, Vol. 94 Issue 14, p144101; Subject Term: POLARIZATION (Electricity); Subject Term: NITROGEN; Subject Term: CARBON monoxide; Subject Term: RAMAN effect; Subject Term: RAMAN spectroscopy; Subject Term: TEMPERATURE; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 3p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.3116087 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37580352&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haney, Mark A. AU - Grandhi, Ramana V. T1 - Consequences of Material Addition for a Beam Strip in a Thermal Environment. JO - AIAA Journal JF - AIAA Journal Y1 - 2009/04// VL - 47 IS - 4 M3 - Article SP - 1026 EP - 1026 SN - 00011452 AB - Aircraft structure subjected to elevated temperature presents a challenging design environment as damaging thermal stress can result. Thermal stress in a structural component is typically alleviated by accommodating the thermal expansion. However, very little work has been done that directly addresses the situation where such a prescription for expansion is not possible. When a structural component is failing due to tensile stresses which are thermally induced, the answer to the question of how best to stiffen the structure in this environment is far from trivial. This work demonstrates that conventional stiffening techniques, for example, thickness increase, may actually increase the rate of damage, as well as generate additional load that must be reacted by sub- and surrounding structure. Because flat plates represent a common structural element that is susceptible to developing tensile stresses due to thermally induced out-of-plane deformation, a simple strip model which represents cylindrical bending in a semi-infinite flat plate is chosen as the focus of this work. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRFRAMES KW - TEMPERATURE effect KW - THERMAL stresses KW - MATERIALS -- Fatigue KW - STIFFNESS (Mechanics) KW - LOADS (Mechanics) N1 - Accession Number: 37355972; Haney, Mark A. 1 Grandhi, Ramana V. 2; Affiliation: 1: Research Engineer, Structural Sciences Center, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433. 2: Distinguished Professor, Department of Mechanical and Materials Engineering, Wright State University, Dayton, Ohio 45435.; Source Info: Apr2009, Vol. 47 Issue 4, p1026; Subject Term: AIRFRAMES; Subject Term: TEMPERATURE effect; Subject Term: THERMAL stresses; Subject Term: MATERIALS -- Fatigue; Subject Term: STIFFNESS (Mechanics); Subject Term: LOADS (Mechanics); Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37355972&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gerschutz, Maria J. AU - Phillips, Chandler A. AU - Reynolds, David B. AU - Repperger, Daniel W. T1 - A computational simulated control system for a high-force pneumatic muscle actuator: system definition and application as an augmented orthosis. JO - Computer Methods in Biomechanics & Biomedical Engineering JF - Computer Methods in Biomechanics & Biomedical Engineering Y1 - 2009/04// VL - 12 IS - 2 M3 - Article SP - 173 EP - 183 SN - 10255842 AB - High-force pneumatic muscle actuators (PMAs) are used for force assistance with minimal displacement applications. However, poor control due to dynamic nonlinearities has limited PMA applications. A simulated control system is developed consisting of: (1) a controller relating an input position angle to an output proportional pressure regulator voltage, (2) a phenomenological model of the PMA with an internal dynamic force loop (system time constant information), (3) a physical model of a human sit-to-stand task and (4) an external position angle feed-back loop. The results indicate that PMA assistance regarding the human sit-to-stand task is feasible within a specified PMA operational pressure range. [ABSTRACT FROM AUTHOR] AB - Copyright of Computer Methods in Biomechanics & Biomedical Engineering is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AUTOMATIC control KW - MUSCLES KW - FORCE & energy KW - SIMULATION methods & models KW - DYNAMICS KW - augmented orthosis KW - control system KW - feed-back control KW - phenomenological model KW - pneumatic muscle actuator KW - time constant N1 - Accession Number: 36636278; Gerschutz, Maria J. 1; Email Address: gerschutz.4@wright.edu Phillips, Chandler A. 1 Reynolds, David B. 1 Repperger, Daniel W. 2; Affiliation: 1: Department of Biomedical, Industrial and Human Factors Engineering, Wright State University, Dayton, OH, USA 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH, USA; Source Info: Apr2009, Vol. 12 Issue 2, p173; Subject Term: AUTOMATIC control; Subject Term: MUSCLES; Subject Term: FORCE & energy; Subject Term: SIMULATION methods & models; Subject Term: DYNAMICS; Author-Supplied Keyword: augmented orthosis; Author-Supplied Keyword: control system; Author-Supplied Keyword: feed-back control; Author-Supplied Keyword: phenomenological model; Author-Supplied Keyword: pneumatic muscle actuator; Author-Supplied Keyword: time constant; Number of Pages: 11p; Illustrations: 9 Diagrams, 2 Charts, 9 Graphs; Document Type: Article L3 - 10.1080/10255840802372052 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36636278&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beachkofski, Brian AU - Terning, Nate AU - Dlugopolsky, John T1 - Fault isolation through test data analysis JO - Engineering Failure Analysis JF - Engineering Failure Analysis Y1 - 2009/04// VL - 16 IS - 3 M3 - Article SP - 987 EP - 999 SN - 13506307 AB - Abstract: The Turbine Research Facility recently experienced a mechanical failure resulting in contact between the eddy current brake’s drum and coils. A review was conducted to determine the cause and determine contributing factors that led to the failure. The structural analysis combined with an analysis of the test data identified the failure mechanism and damage progression. There was a high degree of shaft misalignment that led to a higher rotor dynamic and drum structural response. The drums displacement precipitated contact whose friction prevented the motor’s torque from accelerating the rotor through the resonant condition. Recommendations for condition monitoring are included in the report. [Copyright &y& Elsevier] AB - Copyright of Engineering Failure Analysis is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRUCTURAL failures KW - TURBINES KW - ROTORS KW - MOTORS KW - Engines KW - Failure diagnostics KW - Finite element analysis KW - Turbine rotor KW - Vibration N1 - Accession Number: 36195604; Beachkofski, Brian; Email Address: brian.beachkofski@us.af.mil Terning, Nate 1; Email Address: nate.terning@us.af.mil Dlugopolsky, John 1; Email Address: john.dlugopolsky@us.af.mil; Affiliation: 1: Air Force Research Laboratory, 1950 5th Street, Wright-Patterson AFB, OH 45433, United States; Source Info: Apr2009, Vol. 16 Issue 3, p987; Subject Term: STRUCTURAL failures; Subject Term: TURBINES; Subject Term: ROTORS; Subject Term: MOTORS; Author-Supplied Keyword: Engines; Author-Supplied Keyword: Failure diagnostics; Author-Supplied Keyword: Finite element analysis; Author-Supplied Keyword: Turbine rotor; Author-Supplied Keyword: Vibration; NAICS/Industry Codes: 333996 Fluid Power Pump and Motor Manufacturing; NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.engfailanal.2008.08.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36195604&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gunzelmann, Glenn AU - Byrne, Michael D. AU - Gluck, Kevin A. AU - Moore, Jr., L. Richard T1 - Using Computational Cognitive Modeling to Predict Dual-Task Performance With Sleep Deprivation. JO - Human Factors JF - Human Factors Y1 - 2009/04// VL - 51 IS - 2 M3 - Article SP - 251 EP - 260 SN - 00187208 AB - Objective: The effects of fatigue on multiple-task performance were explored through computational cognitive modeling. Background: Fatigue typically has a negative impact on human performance. Biomathematical models exist that characterize the dynamics of human alertness, but the link between alertness and in situ performance on specific tasks is tenuous. Cognitive architectures offer a principled means of establishing that link. Method: We implemented mechanisms for fatigue, which produce microlapses in cognitive processing, into an existing model, adaptive control of thought-rational, and validated the performance predictions with Bratzke, Rolke, Ulrich, and Peters' data on fatigue and multiple-task performance. Results: The microlapse model replicated the human performance results very well with zero free parameters, although the fit was improved when we allowed two individual differences parameters to vary. Conclusion: Increased frequency of microlapses as a result of fatigue provides a parsimonious explanation for the impact of fatigue on dual-task performance and is consistent with previous research. Application: Our results illustrate how using biomathematical models of fatigue in conjunction with a cognitive architecture can result in accurate predictions of the effects of fatigue on dual-task performance. Extending and generalizing this capability has potential utility in any safety-critical domain in which fatigue may affect performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SLEEP deprivation KW - STRESS (Physiology) KW - TASK analysis KW - COGNITION KW - MATHEMATICAL models KW - DIFFERENTIAL psychology N1 - Accession Number: 43374032; Gunzelmann, Glenn 1; Email Address: glenn.gunzelmann@us.af.mil Byrne, Michael D. 2 Gluck, Kevin A. 1 Moore, Jr., L. Richard 3; Affiliation: 1: Senior research psychologist, Air Force Research Laboratory, Mesa, Arizona. 2: Associate professor, Department of Psychology, Rice University, Houston, Texas. 3: Software engineer, Lockheed Martin in Mesa, Arizona.; Source Info: Apr2009, Vol. 51 Issue 2, p251; Subject Term: SLEEP deprivation; Subject Term: STRESS (Physiology); Subject Term: TASK analysis; Subject Term: COGNITION; Subject Term: MATHEMATICAL models; Subject Term: DIFFERENTIAL psychology; Number of Pages: 10p; Document Type: Article L3 - 10.1177/0018720809334592 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43374032&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Deming, Ross AU - Schindler, John AU - Perlovsky, Leonid T1 - Multi-Target/Multi-Sensor Tracking using Only Range and Doppler Measurements. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2009/04// VL - 45 IS - 2 M3 - Article SP - 593 EP - 611 SN - 00189251 AB - A new approach is described for combining range and Doppler data from multiple radar platforms to perform multi-target detection and tracking. In particular, azimuthal measurements are assumed to be either coarse or unavailable, so that multiple sensors are required to triangulate target tracks using range and Doppler measurements only. Increasing the number of sensors can cause data association by conventional means to become impractical due to combinatorial complexity, i.e., an exponential increase in the number of mappings between signatures and target models. When the azimuthal resolution is coarse, this problem will be exacerbated by the resulting overlap between signatures from multiple targets and clutter. In the new approach, the data association is performed probabilistically, using a variation of expectation-maximization (EM). Combinatorial complexity is avoided by performing an efficient optimization in the space of all target tracks and mappings between tracks and data. The full, multi-sensor, version of the algorithm is tested on simulated data. The results demonstrate that accurate tracks can be estimated by exploiting spatial diversity in the sensor locations. Also, as a proof-of-concept, a simplified, single-sensor range-only version of the algorithm is tested on experimental radar data acquired with a stretch radar receiver. These results are promising, and demonstrate robustness in the presence of nonhomogeneous clutter. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC pulse techniques KW - REMOTE sensing KW - ELECTRONIC systems KW - DOPPLER navigation KW - DOPPLER effect N1 - Accession Number: 43465074; Deming, Ross 1; Email Address: ross.deming@hanscom.af.mil Schindler, John 1; Email Address: jkschindler@verizon.net Perlovsky, Leonid 2; Email Address: leonid.perlovsky@hanscom.af.mil; Affiliation: 1: General Dynamics Information Technology, Inc. 2: Air Force Research Laboratory, Sensors Directorate/RYHE, 80 Scott Drive, Hanscom, AFB, MA 01731; Source Info: Apr2009, Vol. 45 Issue 2, p593; Subject Term: ELECTRONIC pulse techniques; Subject Term: REMOTE sensing; Subject Term: ELECTRONIC systems; Subject Term: DOPPLER navigation; Subject Term: DOPPLER effect; Number of Pages: 19p; Illustrations: 3 Black and White Photographs, 10 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43465074&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Seok Joo Doo AU - Roblin, Patrick AU - Balasubramanian, Venkatesh AU - Taylor, Richard AU - Dandu, Krishnanshu AU - Strahler, Jeffrey AU - Jessen, Gregg H. AU - Teyssier, Jean-Pierre T1 - Pulsed Active Load-Pull Measurements for the Design of High-Efficiency Class-B RF Power Amplifiers With GaN HEMTs. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques Y1 - 2009/04//Apr2009 Part 1 of 2 VL - 57 IS - 4 M3 - Article SP - 881 EP - 889 SN - 00189480 AB - A novel pulsed class-B load-pull measurement system is developed to characterize GaN HEMTs targeting the design of high-efficiency class-B or class-C power amplifiers operating under a pulsed-bias and pulsed-RF (pulsed-I V/RF) condition. Based on a large-signal network analyzer, the test system uses an active load-pull method to provide stable open-loop pulsed-RF loads into the drain at ωo and 2ωo while bypassing slow-memory effects. The load-pull measurement data obtained from AIGaN/GaN HEMTs under the class-B operation reveal that there exist optimal loads for pulsed-IV/RF condition, which differ from the ones found for a dc-IV and continuous wave condition. This is due to the avoidance of slow-memory effects in the pulsed-lV/RF load-pull measurements, which are known to degrade the device RF performance: a 2-dB increase in output power is obtained for a GaN HEMT on sapphire. The optimized pulsed-RF active load for a GaN HEMT on SiC demonstrates a power-added efficiency of 82% with 17.8-dBm output power under quasi class-B pulsed operation at 2 GHz. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POWER amplifiers KW - PULSE frequency modulation KW - ELECTRIC network analyzers KW - LOAD (Electric power) KW - ELECTRIC power systems KW - Class B KW - GaN HEMTs KW - large-signal network annlyzer (LSNA) KW - load-pull KW - memory effects KW - pulsed-IV KW - pulsed-RF N1 - Accession Number: 39060577; Seok Joo Doo 1 Roblin, Patrick 2; Email Address: roblin@ece.osu.edu Balasubramanian, Venkatesh 3 Taylor, Richard 3 Dandu, Krishnanshu 3 Strahler, Jeffrey 4 Jessen, Gregg H. 5 Teyssier, Jean-Pierre 6; Affiliation: 1: Department of Electronic Engineering, Korea Army Academy at Young-Cheon, Young-Cheon 770-849, Korea 2: Department of Electrical and Computer Engineering, The Ohio State University, Columbus, OH 43210 USA 3: Texas Instruments Incorporated, Sunnyvale, CA 94089 USA 4: Andrew Corporation, Westerville, OH 43082 USA 5: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH 45433 USA 6: XLIM Institute of Research, Limoges 87060, France; Source Info: Apr2009 Part 1 of 2, Vol. 57 Issue 4, p881; Subject Term: POWER amplifiers; Subject Term: PULSE frequency modulation; Subject Term: ELECTRIC network analyzers; Subject Term: LOAD (Electric power); Subject Term: ELECTRIC power systems; Author-Supplied Keyword: Class B; Author-Supplied Keyword: GaN HEMTs; Author-Supplied Keyword: large-signal network annlyzer (LSNA); Author-Supplied Keyword: load-pull; Author-Supplied Keyword: memory effects; Author-Supplied Keyword: pulsed-IV; Author-Supplied Keyword: pulsed-RF; Number of Pages: 9p; Illustrations: 4 Charts, 6 Graphs; Document Type: Article L3 - 10.1109/TMTT.2009.2015111 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=39060577&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Golden, Patrick J. T1 - Development of a dovetail fretting fatigue fixture for turbine engine materials JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2009/04// VL - 31 IS - 4 M3 - Article SP - 620 EP - 628 SN - 01421123 AB - Abstract: A unique dovetail fretting fatigue fixture was designed and evaluated for testing turbine engine materials at room or elevated temperatures. Cold section and hot section materials from military turbojet engines were chosen for testing. These included Ti-6Al-4V, Rene’88DT, and Rene’N5. The new fixture was improved over a previously used dovetail fretting fatigue fixture by including instrumentation for direct measurement of the normal contact force, alignment control, and elevated temperature capability. Measurement of the shear component of the contact force was validated through an alternative instrumentation method. Investigation of the thermal gradient in the specimen and pads was conducted. Initial test results revealed interesting variability in the behavior of the nickel based superalloy specimens at elevated temperature. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JIGS & fixtures -- Design & construction KW - TURBINES KW - FRETTING corrosion KW - MATERIALS -- Fatigue KW - MILITARY airplanes -- Turbofan engines KW - STRUCTURAL analysis (Engineering) KW - SHEAR (Mechanics) KW - HEAT resistant alloys KW - Dovetail KW - Elevated temperature KW - Fretting KW - Nickel based superalloy KW - Ti-6Al-4V N1 - Accession Number: 36192616; Golden, Patrick J. 1; Email Address: patrick.golden@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Apr2009, Vol. 31 Issue 4, p620; Subject Term: JIGS & fixtures -- Design & construction; Subject Term: TURBINES; Subject Term: FRETTING corrosion; Subject Term: MATERIALS -- Fatigue; Subject Term: MILITARY airplanes -- Turbofan engines; Subject Term: STRUCTURAL analysis (Engineering); Subject Term: SHEAR (Mechanics); Subject Term: HEAT resistant alloys; Author-Supplied Keyword: Dovetail; Author-Supplied Keyword: Elevated temperature; Author-Supplied Keyword: Fretting; Author-Supplied Keyword: Nickel based superalloy; Author-Supplied Keyword: Ti-6Al-4V; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 333514 Special Die and Tool, Die Set, Jig, and Fixture Manufacturing; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijfatigue.2008.03.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36192616&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fawaz, S.A. AU - Hill, D. T1 - Validation of stress intensity factors of diametrically opposed corner cracks in a hole JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2009/04// VL - 31 IS - 4 M3 - Article SP - 712 EP - 718 SN - 01421123 AB - Abstract: Population of the world’s largest database of stress intensity factor (K) solutions began in 2002 with the calculation of 5.6 million K solutions for diametrically opposed unsymmetric corner cracks at a straight shank hole in a finite width sheet subject to remote tension, remote bending, and bearing loading. Previous work to validate these K solutions was in the form of fatigue life predictions and crack shape development. The current work attempts to build on the previous validation efforts with the addition of comparing the calculated K solutions with K solutions obtained from carefully controlled laboratory experiments. The latter are obtained via fatigue striation measurements at high magnification, up to 40,000×, using a scanning electron microscope and crack growth rate data, in terms of da/dN vs. ΔK at the same test condition. The results show the numerical K solutions are within 20% of the experimentally derived K’s at discrete locations along the crack front. The relatively large error is due to the discontinuous crack extension process of the crack front. Moreover, the entire crack front does not instantaneously extend uniformly in a self similar fashion. The crack extends stepwise over discrete portions of the crack front. Possibly averaging the striation spacing over a specified arc length of the crack front would ameliorate the discontinuous nature of crack propagation resulting in better correlation between the numerical and experimental results. As a result of the current work, we have shown time consuming striation spacing measurements at high magnification are not required to validate K solutions. The best method for such validation efforts is using the fatigue life, crack history, and crack shape which can be obtained at 1/10th the cost of obtaining striation spacing measurements. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - HOLES KW - FRACTURE mechanics KW - MATERIALS -- Fatigue KW - PRODUCT life cycle KW - PREDICTION models KW - Stress intensity KW - Striation spacing KW - Unsymmetric corner cracks KW - Validation N1 - Accession Number: 36192627; Fawaz, S.A.; Email Address: Scott.Fawaz@USAFA.edu Hill, D. 1; Affiliation: 1: Department of Engineering Mechanics, Center for Aircraft Structural Life Extension (CAStLE), United States Air Force Academy, 2354 Fairchild Hall, Suite 6L-155, CO 80840, USA; Source Info: Apr2009, Vol. 31 Issue 4, p712; Subject Term: STRAINS & stresses (Mechanics); Subject Term: HOLES; Subject Term: FRACTURE mechanics; Subject Term: MATERIALS -- Fatigue; Subject Term: PRODUCT life cycle; Subject Term: PREDICTION models; Author-Supplied Keyword: Stress intensity; Author-Supplied Keyword: Striation spacing; Author-Supplied Keyword: Unsymmetric corner cracks; Author-Supplied Keyword: Validation; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijfatigue.2008.03.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36192627&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Szmulowicz, F. AU - Elhamri, S. AU - Haugan, H. J. AU - Brown, G. J. AU - Mitchel, W. C. T1 - Carrier mobility as a function of carrier density in type-II InAs/GaSb superlattices. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2009/04// VL - 105 IS - 7 M3 - Article SP - 074303 EP - 074309 PB - American Institute of Physics SN - 00218979 AB - We report on a study of the in-plane carrier mobility in InAs/GaSb superlattices as a function of carrier density. Instead of using a number of differently doped samples, we use the persistent-photoconductivity effect to vary the carrier density over a wide range from n- to p-type in single samples and perform Hall effect measurements. Hence, our data are not obscured by sample to sample nonuniformities. We demonstrate that low-temperature in-plane mobilities are limited by screened interface roughness scattering (IRS), although present models of two-dimensional carrier screening of IRS lead to a limited agreement with our data. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - HALL effect KW - PHOTOCONDUCTIVITY KW - SCATTERING (Physics) KW - MATHEMATICAL models KW - HOLES (Electron deficiencies) N1 - Accession Number: 37610482; Szmulowicz, F. 1 Elhamri, S. 2 Haugan, H. J. 3 Brown, G. J. 4 Mitchel, W. C. 4; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469-0178, 2: Department of Physics, University of Dayton, Dayton, Ohio 45469-2314, 3: Universal Technology Corporation, Dayton, Ohio 45432, 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: Apr2009, Vol. 105 Issue 7, p074303; Subject Term: SUPERLATTICES; Subject Term: HALL effect; Subject Term: PHOTOCONDUCTIVITY; Subject Term: SCATTERING (Physics); Subject Term: MATHEMATICAL models; Subject Term: HOLES (Electron deficiencies); Number of Pages: 5p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.3103281 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37610482&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, C. H. AU - Higgins, A. K. AU - Huang, M. Q. AU - Horwath, J. C. AU - Shen, Y. AU - Liu, S. T1 - Bulk nanocrystalline Sm(Co1-xFex)z with z up to 14.7% and 35% Co–Fe phase and the effect of fluorine inclusion. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2009/04// VL - 105 IS - 7 M3 - Article SP - 07A718 EP - 07A721 PB - American Institute of Physics SN - 00218979 AB - This paper reports the effort for searching new compounds and exploring feasible techniques that can make nanocomposite magnets. Bulk nanocrystalline magnets were made using mechanical alloying and hot compaction, whose compositions were Sm(Co1-xFex)z and Sm[(Co1-xFex)1-yFy]z with z=5.6–4.7, x=0–0.575, and y=0–0.08. For isotropic Sm(Co0.834Fe0.167)z series, the remanence Br increases from 6 to 9.1 kG as z increases from 5.6 to 14.7, and the energy product (BH)maxvalues range from 3 to 13.8 MGOe. Although the coercivity Hci decreased from 12 kOe at z=6 to 3.3 kOe at z=14.7, it is noticeably good for the material with up to 35% of soft phase, showing evidence of exhange ecoupling. Magnetic properties of of Sm(Co1-xFex)1-yFy)z series indicate some texture forming for y=0.04 and z<7.6. TEM and SEM /EDS analyses show (2:17) hard phase and Fe–Co soft phase coexisting in the specimens with z>8.5. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOCRYSTALS KW - HYSTERESIS loop KW - MAGNETIC couplings KW - MAGNETIC properties KW - FLUORINE N1 - Accession Number: 37610879; Chen, C. H. 1 Higgins, A. K. 1 Huang, M. Q. 2,3 Horwath, J. C. 3 Shen, Y. 4 Liu, S. 1,4; Affiliation: 1: University of Dayton Magnetics Laboratory, Dayton, Ohio 45469, 2: UES Inc., Dayton, Ohio 45432, 3: Air Force Research Laboratory (AFRL), Wright-Patterson Air Force Base, Ohio 45433, 4: FutureTek Corp., Dayton, Ohio 45419,; Source Info: Apr2009, Vol. 105 Issue 7, p07A718; Subject Term: NANOCRYSTALS; Subject Term: HYSTERESIS loop; Subject Term: MAGNETIC couplings; Subject Term: MAGNETIC properties; Subject Term: FLUORINE; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 3p; Illustrations: 2 Black and White Photographs, 5 Graphs; Document Type: Article L3 - 10.1063/1.3068635 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37610879&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nelson, D. A. AU - Charbonnel, S. AU - Curran, A. R. AU - Marttila, E. A. AU - Fiala, D. AU - Mason, P. A. AU - Ziriax, J. M. T1 - A High-Resolution Voxel Model for Predicting Local Tissue Temperatures in Humans Subjected to Warm and Hot Environments. JO - Journal of Biomechanical Engineering JF - Journal of Biomechanical Engineering Y1 - 2009/04// VL - 131 IS - 4 M3 - Article SP - 6 EP - 6 SN - 01480731 AB - This work describes and presents results from a new three-dimensional whole-body model of human thermoregulation. The model has been implemented using a version of the "Brooks Man" anatomical data set, consisting of 1.3×108 cubic volume elements (voxels) measuring 0.2 cm/side. The model simulates thermoregulation through passive mechanisms (metabolism, blood flow, respiration, and transpiration) and active mechanisms (vasodilatation, vasoconstriction, sweating, and shivering). Compared with lumped or compartment models, a voxel model is capable of high spatial resolution and can capture a level of anatomical detail not achievable otherwise. A high spatial resolution model can predict detailed heating patterns from localized or nonuniform heating patterns, such as from some radio frequency sources. Exposures to warm and hot environments (ambient temperatures of 33-48°C) were simulated with the current voxel model and with a recent compartment model. Results from the two models (core temperature, skin temperature, metabolic rate, and evaporative cooling rate) were compared with published experimental results obtained under similar conditions. Under the most severe environmental conditions considered (47.8°C, 27% RH for 2 h), the voxel model predicted a rectal temperature increase of 0.56°C, compared with a core temperature increase of 0.45°C from the compartment model and an experimental mean rectal temperature increase of 0.6°C. Similar, good agreement was noted for other thermal variables and under other environmental conditions. Results suggest that the voxel model is capable of predicting temperature response (core temperature and skin temperature) to certain warm or hot environments, with accuracy comparable to that of a compartment model. In addition, the voxel model is able to predict internal tissue temperatures and surface temperatures, over time, with a level of specificity and spatial resolution not achievable with compartment models. The development of voxel models and related computational tools may be useful for thermal dosimetry applications involving mild temperature hyperthermia and for the assessment of safe exposure to certain nonionizing radiation sources. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Biomechanical Engineering is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MECHANISM of action (Biochemistry) KW - VASODILATION KW - VASOCONSTRICTION KW - SWEAT glands -- Diseases KW - SHIVERING KW - HEATING KW - ECOLOGY KW - TEMPERATURE KW - THERMAL dosimetry KW - FEVER KW - NONIONIZING radiation KW - biological tissues KW - biothermics KW - haemodynamics KW - physiological models KW - pneumodynamics KW - skin N1 - Accession Number: 43477545; Nelson, D. A. 1 Charbonnel, S. 1 Curran, A. R. 2 Marttila, E. A. 2 Fiala, D. 3 Mason, P. A. 4 Ziriax, J. M. 5; Affiliation: 1: Michigan Technological University, Houghton, MI 49931 2: ThermoAnalytics, Inc., Calumet, MI 49913 3: Fachgebiet Bauphysik und Technischer Ausbau, Universität Karlsruhe (TH), 76131 Karlsruhe, Germany 4: Directed Energy Bioeffects Division, Human Effectiveness Directorate, Air Force Research Laboratory, Brooks City-Base, TX 78235 5: Naval Health Research Center Detachment, Brooks City-Base, TX 78235; Source Info: Apr2009, Vol. 131 Issue 4, p6; Subject Term: MECHANISM of action (Biochemistry); Subject Term: VASODILATION; Subject Term: VASOCONSTRICTION; Subject Term: SWEAT glands -- Diseases; Subject Term: SHIVERING; Subject Term: HEATING; Subject Term: ECOLOGY; Subject Term: TEMPERATURE; Subject Term: THERMAL dosimetry; Subject Term: FEVER; Subject Term: NONIONIZING radiation; Author-Supplied Keyword: biological tissues; Author-Supplied Keyword: biothermics; Author-Supplied Keyword: haemodynamics; Author-Supplied Keyword: physiological models; Author-Supplied Keyword: pneumodynamics; Author-Supplied Keyword: skin; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; Number of Pages: 1p; Document Type: Article L3 - 10.1115/1.3002765 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43477545&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nelson, D. A. AU - Curran, A. R. AU - Fiala, D. AU - Mason, P. A. AU - Ziriax, J. M. T1 - A High-Resolution Voxel Model for Predicting Local Tissue Temperatures in Humans Subjected to Warm and Hot Environments. JO - Journal of Heat Transfer JF - Journal of Heat Transfer Y1 - 2009/04// VL - 131 IS - 4 M3 - Article SP - 6 EP - 6 SN - 00221481 AB - This work describes and presents results from a new three-dimensional whole-body model of human thermoregulation. The model has been implemented using a version of the "Brooks Man" anatomical data set, consisting of 1.3 ×108 cubic volume elements (voxels) measuring 0.2 cm/side. The model simulates thermoregulation through passive mechanisms (metabolism, blood flow, respiration, and transpiration) and active mechanisms (vasodilatation, vasoconstriction, sweating, and shivering). Compared with lumped or compartment models, a voxel model is capable of high spatial resolution and can capture a level of anatomical detail not achievable otherwise. A high spatial resolution model can predict detailed heating patterns from localized or nonuniform heating patterns, such as from some radio frequency sources. Exposures to warm and hot environments (ambient temperatures of 33-48°C) were simulated with the current voxel model and with a recent compartment model. Results from the two models (core temperature, skin temperature, metabolic rate, and evaporative cooling rate) were compared with published experimental results obtained under similar conditions. Under the most severe environmental conditions considered (47.8°C, 27% RH for 2 h), the voxel model predicted a rectal temperature increase of 0.56°C, compared with a core temperature increase of 0.45°C from the compartment model and an experimental mean rectal temperature increase of 0.6°C. Similar, good agreement was noted for other thermal variables and under other environmental conditions. Results suggest that the voxel model is capable of predicting temperature response (core temperature and skin temperature) to certain warm or hot environments, with accuracy comparable to that of a compartment model. In addition, the voxel model is able to predict internal tissue temperatures and surface temperatures, over time, with a level of specificity and spatial resolution not achievable with compartment models. The development of voxel models and related computational tools may be useful for thermal dosimetry applications involving mild temperature hyperthermia and for the assessment of safe exposure to certain nonionizing radiation sources. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Heat Transfer is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BODY temperature regulation KW - METABOLISM KW - BLOOD flow KW - RESPIRATION KW - VASODILATION KW - VASOCONSTRICTION KW - RADIO frequency KW - THERMAL dosimetry KW - FEVER KW - biological tissues KW - biothermics KW - haemodynamics KW - physiological models KW - pneumodynamics KW - skin N1 - Accession Number: 43386525; Nelson, D. A. 1 Curran, A. R. 2 Fiala, D. 3 Mason, P. A. 4 Ziriax, J. M. 5; Affiliation: 1: Michigan Technological University, Houghton, MI 49931 2: ThermoAnalytics, Inc., Calumet, MI 49913 3: Fachgebiet Bauphysik und Technischer Ausbau, Universität Karlsruhe (TH), 76131 Karlsruhe, Germany 4: Directed Energy Bioeffects Division, Human Effectiveness Directorate, Air Force Research Laboratory, Brooks City-Base, TX 78235 5: Naval Health Research Center Detachment, Brooks City-Base, TX 78235; Source Info: Apr2009, Vol. 131 Issue 4, p6; Subject Term: BODY temperature regulation; Subject Term: METABOLISM; Subject Term: BLOOD flow; Subject Term: RESPIRATION; Subject Term: VASODILATION; Subject Term: VASOCONSTRICTION; Subject Term: RADIO frequency; Subject Term: THERMAL dosimetry; Subject Term: FEVER; Author-Supplied Keyword: biological tissues; Author-Supplied Keyword: biothermics; Author-Supplied Keyword: haemodynamics; Author-Supplied Keyword: physiological models; Author-Supplied Keyword: pneumodynamics; Author-Supplied Keyword: skin; Number of Pages: 1p; Document Type: Article L3 - 10.1115/1.3002765 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43386525&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Igor Linkov AU - Jeffery Steevens AU - Gitanjali Adlakha-Hutcheon AU - Erin Bennett AU - Mark Chappell AU - Vicki Colvin AU - J. Davis AU - Thomas Davis AU - Alison Elder AU - Steffen Foss Hansen AU - Pertti Hakkinen AU - Saber Hussain AU - Delara Karkan AU - Rafi Korenstein AU - Iseult Lynch AU - Chris Metcalfe AU - Abou Ramadan AU - F. Satterstrom T1 - Emerging methods and tools for environmental risk assessment, decision-making, and policy for nanomaterials: summary of NATO Advanced Research Workshop. JO - Journal of Nanoparticle Research JF - Journal of Nanoparticle Research Y1 - 2009/04// VL - 11 IS - 3 M3 - Article SP - 513 EP - 527 SN - 13880764 AB - Abstract  Nanomaterials and their associated technologies hold promising opportunities for the development of new materials and applications in a wide variety of disciplines, including medicine, environmental remediation, waste treatment, and energy conservation. However, current information regarding the environmental effects and health risks associated with nanomaterials is limited and sometimes contradictory. This article summarizes the conclusions of a 2008 NATO workshop designed to evaluate the wide-scale implications (e.g., benefits, risks, and costs) of the use of nanomaterials on human health and the environment. A unique feature of this workshop was its interdisciplinary nature and focus on the practical needs of policy decision makers. Workshop presentations and discussion panels were structured along four main themes: technology and benefits, human health risk, environmental risk, and policy implications. Four corresponding working groups (WGs) were formed to develop detailed summaries of the state-of-the-science in their respective areas and to discuss emerging gaps and research needs. The WGs identified gaps between the rapid advances in the types and applications of nanomaterials and the slower pace of human health and environmental risk science, along with strategies to reduce the uncertainties associated with calculating these risks. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nanoparticle Research is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENERGY management KW - FACILITY management KW - ENERGY consultants KW - ENERGY auditing N1 - Accession Number: 36783501; Igor Linkov 1 Jeffery Steevens 2 Gitanjali Adlakha-Hutcheon 3 Erin Bennett 4 Mark Chappell 5 Vicki Colvin 6 J. Davis 7 Thomas Davis 8 Alison Elder 9 Steffen Foss Hansen 10 Pertti Hakkinen 11 Saber Hussain 12 Delara Karkan 13 Rafi Korenstein 14 Iseult Lynch 15 Chris Metcalfe 16 Abou Ramadan 17 F. Satterstrom 18; Affiliation: 1: U.S. Army Corps of Engineers Environmental Laboratory 83 Winchester Street Suite 1 Brookline MA 02446 USA 2: U.S. Army ERDC 3909 Halls Ferry Road Vicksburg MS 39056 USA 3: Defense Research and Development Canada 305 Rideau Street Ottawa Canada K1A 0K2 4: Intertox Inc. and Bioengineering Group 18 Commercial Street Salem MA 01970 USA 5: U.S. Army Corps of Engineers Environmental Laboratory 3909 Halls Ferry Road Vicksburg MS 39056 USA 6: Rice University ICON 141 Dell Butcher Hall Houston TX 77005 USA 7: Office of Research and Development, U.S. Environmental Protection Agency National Center for Environmental Assessment Research Triangle Park NC 27711 USA 8: University of Montreal Environment Canada and Department of Chemistry C.P. 6128, succursale Centre-Ville Montreal QC Canada H3C 3J7 9: University of Rochester Department of Environmental Medicine 575 Elmwood Ave. Box 850 Rochester NY 14610 USA 10: Technical University of Denmark Department of Environmental Engineering, NanoDTU Building 113 Kgs. Lyngby 2800 Denmark 11: Toxicology Excellence for Risk Assessment (TERA) Cincinnatti OH USA 12: Air Force Research Laboratory Dayton OH USA 13: Health Canada Ottawa Canada 14: Marian Gertner Institute for Medical Nanosystems, Tel Aviv University Department of Physiology and Pharmacology, Faculty of Medicine Tel-Aviv 69978 Israel 15: School of Chemistry & Chemical Biology, University College Dublin Irish Centre for Colloid Science & Biomaterials Dublin Ireland 16: Trent University 1600 West Bank Drive Peterborough ON Canada K9J 7B8 17: National Egyptian Environmental and Radiation Monitoring Network 3 Ahmed El Zomor St., Nasr City 11672 P.O. Box 7551 Cairo Egypt 18: Harvard School of Engineering and Applied Sciences Engineering Sciences Laboratory 224 40 Oxford Street Cambridge MA 02138 USA; Source Info: Apr2009, Vol. 11 Issue 3, p513; Subject Term: ENERGY management; Subject Term: FACILITY management; Subject Term: ENERGY consultants; Subject Term: ENERGY auditing; NAICS/Industry Codes: 541690 Other Scientific and Technical Consulting Services; NAICS/Industry Codes: 531120 Lessors of Nonresidential Buildings (except Miniwarehouses); NAICS/Industry Codes: 561790 Other Services to Buildings and Dwellings; NAICS/Industry Codes: 561210 Facilities Support Services; NAICS/Industry Codes: 531312 Nonresidential Property Managers; Number of Pages: 15p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36783501&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - SUBRAMANYAM, GURU AU - BARTSCH, CARRIE M. AU - GROTE, JAMES G. AU - NAIK, RAJESH R. AU - BROTT, LAWRENCE L. AU - STONE, MORLEY AU - CAMPBELL, ANGELA T1 - EFFECT OF EXTERNAL ELECTRICAL STIMULI ON DNA-BASED BIOPOLYMERS. JO - NANO JF - NANO Y1 - 2009/04// VL - 4 IS - 2 M3 - Article SP - 69 EP - 76 SN - 17932920 AB - Biopolymers, such as deoxyribonucleic acid-hexadecyltrimethyl ammonium chloride (DNA-CTMA) and bovine serum albumin-polyvinyl alcohol (BSA-PVA), were studied using a novel capacitive test structure. A variety of external electrical stimuli were applied, including a low frequency alternating current signal and a rf/microwave frequency signal combined with a DC bias. The dynamic responses of the DNA-based biopolymer to the external stimuli are presented in this paper. The electrical transport measurements support the space-charge-limited conduction and the low frequency capacitance–voltage (CV) measurements showed large depletion layer capacitance at the Au–biopolymer interface, at 20 Hz, and the capacitance approaching bulk values at 1 MHz. Electric force microscopy (EFM) was utilized for visualization of charge dynamics and to examine the effect of DC bias combined with an AC signal. Ionic charges in the DNA-CTMA system seem to be responsible for the dynamic response to the various external electrical stimuli. [ABSTRACT FROM AUTHOR] AB - Copyright of NANO is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOPOLYMERS KW - DNA KW - BIOMOLECULES KW - AMMONIUM compounds KW - NANOTECHNOLOGY KW - NANOSTRUCTURED materials KW - dielectric properties KW - DNA-based biopolymers KW - electric force microscopy KW - electrical transport in biopolymers N1 - Accession Number: 43455250; SUBRAMANYAM, GURU 1; Email Address: guru.subramanyam@notes.udayton.edu BARTSCH, CARRIE M. 1 GROTE, JAMES G. 2 NAIK, RAJESH R. 2 BROTT, LAWRENCE L. 2 STONE, MORLEY 2 CAMPBELL, ANGELA 2; Affiliation: 1: Department of Electrical and Computer Engineering, University of Dayton, 300 College Park, Dayton, OH 45469, USA 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: Apr2009, Vol. 4 Issue 2, p69; Subject Term: BIOPOLYMERS; Subject Term: DNA; Subject Term: BIOMOLECULES; Subject Term: AMMONIUM compounds; Subject Term: NANOTECHNOLOGY; Subject Term: NANOSTRUCTURED materials; Author-Supplied Keyword: dielectric properties; Author-Supplied Keyword: DNA-based biopolymers; Author-Supplied Keyword: electric force microscopy; Author-Supplied Keyword: electrical transport in biopolymers; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 8p; Illustrations: 2 Color Photographs, 3 Diagrams, 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43455250&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fagan, Deborah AU - Taylor, Steven AU - Schult, Frederick AU - Anderson, Dale T1 - Using Ancillary Information to Improve Hypocenter Estimation: Bayesian Single Event Location (BSEL). JO - Pure & Applied Geophysics JF - Pure & Applied Geophysics Y1 - 2009/04// VL - 166 IS - 4 M3 - Article SP - 521 EP - 545 PB - Springer Science & Business Media B.V. SN - 00334553 AB - We have developed and tested an algorithm, Bayesian Single Event Location (BSEL), for estimating the location of a seismic event. The main driver for our research is the inadequate representation of ancillary information in the hypocenter estimation procedure. The added benefit is that we have also addressed instability issues often encountered with historical NLR solvers (e.g., non-convergence or seismically infeasible results). BSEL differs from established nonlinear regression techniques by using a Bayesian prior probability density function (prior PDF) to incorporate ancillary physical basis constraints about event location. P-wave arrival times from seismic events are used in the development. Depth, a focus of this paper, may be modeled with a prior PDF (potentially skewed) that captures physical basis bounds from surface wave observations. This PDF is constructed from a Rayleigh wave depth excitation eigenfunction that is based on the observed minimum period from a spectrogram analysis and estimated near-source elastic parameters. For example, if the surface wave is an Rg phase, it potentially provides a strong constraint for depth, which has important implications for remote monitoring of nuclear explosions. The proposed Bayesian algorithm is illustrated with events that demonstrate its congruity with established hypocenter estimation methods and its application potential. The BSEL method is applied to three events: 1) A shallow Mw 4 earthquake that occurred near Bardwell, KY on June 6, 2003, 2) the Mw 5.6 earthquake of July 26, 2005 that occurred near Dillon, MT, and 3) a deep Mw 5.7 earthquake that occurred off the coast of Japan on April 22, 1980. A strong Rg was observed from the Bardwell, KY earthquake that places very strong constraints on depth and origin time. No Rg was observed for the Dillon, MT earthquake, but we used the minimum observed period of a Rayleigh wave (7 seconds) to reduce the depth and origin time uncertainty. Because the Japan event was deep, there is no observed surface wave energy. We utilize the prior generated from the Dillon, MT event to show that even in the case when a prior is inappropriately applied, high quality data will overcome its influence and result in a reasonable hypocenter estimate. [ABSTRACT FROM AUTHOR] AB - Copyright of Pure & Applied Geophysics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEISMIC event location KW - BAYESIAN analysis KW - MAXIMUM likelihood statistics KW - REGRESSION analysis KW - DENSITY functionals KW - SURFACE waves (Fluids) KW - Bayesian methods KW - maximum likelihood KW - Seismic event location N1 - Accession Number: 39768237; Fagan, Deborah 1; Email Address: dfagan@pnl.gov Taylor, Steven 2 Schult, Frederick 3 Anderson, Dale 1,4; Affiliation: 1: Pacific Northwest National Laboratory, Richland 99352 U.S.A 2: Rocky Mountain Geophysics, 167 Piedra Loop Los Alamos 87544 U.S.A 3: Air Force Research Laboratory, 29 Randolph Rd Hanscom AFB 01731 U.S.A 4: Los Alamos National Laboratory, Earth and Environmental Sciences, Los Alamos, NM 87545, U.S.A.; Source Info: Apr2009, Vol. 166 Issue 4, p521; Subject Term: SEISMIC event location; Subject Term: BAYESIAN analysis; Subject Term: MAXIMUM likelihood statistics; Subject Term: REGRESSION analysis; Subject Term: DENSITY functionals; Subject Term: SURFACE waves (Fluids); Author-Supplied Keyword: Bayesian methods; Author-Supplied Keyword: maximum likelihood; Author-Supplied Keyword: Seismic event location; Number of Pages: 25p; Illustrations: 2 Charts, 13 Graphs, 2 Maps; Document Type: Article L3 - 10.1007/s00024-004-0464-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=39768237&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cherukuri, B. AU - Srinivasan, R. AU - Tamirisakandala, S. AU - Miracle, D.B. T1 - The influence of trace boron addition on grain growth kinetics of the beta phase in the beta titanium alloy Ti–15Mo–2.6Nb–3Al–0.2Si JO - Scripta Materialia JF - Scripta Materialia Y1 - 2009/04// VL - 60 IS - 7 M3 - Article SP - 496 EP - 499 SN - 13596462 AB - Trace boron additions to the β titanium alloy Ti–15Mo–2.6Nb–3Al–0.2Si (wt.%) lead to significant grain refinement of the as-cast microstructure and precipitation of TiB whiskers along the grain boundaries. The TiB is very effective in restricting the β grain boundary mobility by Zener pinning. A model is developed to predict the maximum grain size as a function of TiB size, orientation and volume fraction. Good agreement between model predictions and experimental results was obtained. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BORON KW - ADDITION reactions KW - CRYSTAL growth KW - TRACE elements KW - PARTICLE size determination KW - TITANIUM alloys KW - PRECIPITATION (Chemistry) KW - CRYSTAL grain boundaries KW - Activation energy KW - Beta21S KW - Grain growth KW - Titanium alloy KW - Zener pinning N1 - Accession Number: 36392627; Cherukuri, B. 1 Srinivasan, R. 1; Email Address: raghavan.srinivasan@wright.edu Tamirisakandala, S. 2 Miracle, D.B. 3; Affiliation: 1: Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45435, USA 2: FMW Composite Systems, Inc., Bridgeport, WV 26330, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Apr2009, Vol. 60 Issue 7, p496; Subject Term: BORON; Subject Term: ADDITION reactions; Subject Term: CRYSTAL growth; Subject Term: TRACE elements; Subject Term: PARTICLE size determination; Subject Term: TITANIUM alloys; Subject Term: PRECIPITATION (Chemistry); Subject Term: CRYSTAL grain boundaries; Author-Supplied Keyword: Activation energy; Author-Supplied Keyword: Beta21S; Author-Supplied Keyword: Grain growth; Author-Supplied Keyword: Titanium alloy; Author-Supplied Keyword: Zener pinning; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2008.11.040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36392627&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Greco, Maria AU - Gini, Fulvio AU - Farina, Alfonso AU - Rangaswamy, Muralidhar T1 - DOA estimation and multi-user interference in a two-radar system JO - Signal Processing JF - Signal Processing Y1 - 2009/04// VL - 89 IS - 4 M3 - Article SP - 355 EP - 364 SN - 01651684 AB - Abstract: In this paper, we investigate the impact of the presence of interfering radar on the target direction of arrival (DOA) estimation performed by the reference radar. The analyzed estimators are the pseudo-monopulse and the maximum likelihood techniques. The importance of the use of codes in multi-user radar system is highlighted in a simple scenario of two radars by calculating the root-mean square error of the estimators in different operational conditions and comparing them with the Cramér-Rao lower bounds. [Copyright &y& Elsevier] AB - Copyright of Signal Processing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIGNAL processing -- Digital techniques KW - ELECTROMAGNETIC interference KW - MONOPULSE radar KW - ESTIMATION theory KW - ROOT-mean-squares KW - RADAR transmitters KW - CODING theory KW - Auto and cross-ambiguity function KW - Cramér-Rao lower bounds KW - DOA estimation KW - Frequency hop-coded signals KW - Maximum likelihood KW - Monopulse radar KW - Radar network N1 - Accession Number: 35924889; Greco, Maria 1; Email Address: m.greco@ing.unipi.it Gini, Fulvio 1; Email Address: f.gini@ing.unipi.it Farina, Alfonso 2; Email Address: afarina@selex-si.com Rangaswamy, Muralidhar 3; Email Address: Muralidhar.Rangaswamy@hanscom.af.mil; Affiliation: 1: Dip. di Ingegneria dell’Informazione, University of Pisa, via G. Caruso, 14-56122 Pisa, Italy 2: SELEX-Sistemi Integrati, via Tiburtina Km. 12.400–00131 Rome, Italy 3: Air Force Research Laboratory Sensors Directorate, 80 Scott Dr. Hanscom Air Force Base, MA 01731-2909, USA; Source Info: Apr2009, Vol. 89 Issue 4, p355; Subject Term: SIGNAL processing -- Digital techniques; Subject Term: ELECTROMAGNETIC interference; Subject Term: MONOPULSE radar; Subject Term: ESTIMATION theory; Subject Term: ROOT-mean-squares; Subject Term: RADAR transmitters; Subject Term: CODING theory; Author-Supplied Keyword: Auto and cross-ambiguity function; Author-Supplied Keyword: Cramér-Rao lower bounds; Author-Supplied Keyword: DOA estimation; Author-Supplied Keyword: Frequency hop-coded signals; Author-Supplied Keyword: Maximum likelihood; Author-Supplied Keyword: Monopulse radar; Author-Supplied Keyword: Radar network; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.sigpro.2008.08.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35924889&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Howard, Timothy A. AU - Tappin, S. James T1 - Interplanetary Coronal Mass Ejections Observed in the Heliosphere: 1. Review of Theory. JO - Space Science Reviews JF - Space Science Reviews Y1 - 2009/04// VL - 147 IS - 1/2 M3 - Article SP - 31 EP - 54 PB - Springer Science & Business Media B.V. SN - 00386308 AB - With the recent advancements in interplanetary coronal mass ejection (ICME) imaging it is necessary to understand how heliospheric images may be interpreted, particularly at large elongation angles. Of crucial importance is how the current methods used for coronal mass ejection measurement in coronagraph images must be changed to account for the large elongations involved in the heliosphere. In this review of theory we build up a picture of ICME appearance and evolution at large elongations in terms of how it would appear to an observer near 1 AU from the Sun. We begin by revisiting the basics of Thomson scattering describing how ICMEs are detected, in this we attempt to clarify a number of common misconceptions. We then build up from a single electron to an integrated line of sight, consider the ICME as a collection of lines of sight and describe how a map of ICME appearance may be developed based on its appearance relative to each line of sight. Finally, we discuss how the topology of the ICME affects its observed geometry and kinematic properties, particularly at large elongations. This review is the first of a three-part series of papers, where a review of theory is presented here and a model is developed and used in subsequent papers. [ABSTRACT FROM AUTHOR] AB - Copyright of Space Science Reviews is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR activity KW - HELIOSPHERE (Astrophysics) KW - STELLAR activity KW - SOLAR radiation KW - SUN KW - Coronal mass ejections KW - Interplanetary medium KW - Solar-terrestrial relations N1 - Accession Number: 45110188; Howard, Timothy A. 1,2; Email Address: thoward@nso.edu Tappin, S. James 1; Affiliation: 1: Air Force Research Laboratory, National Solar Observatory, Sunspot, NM 88349, USA. 2: Department of Space Studies, Southwest Research Institute, Boulder, CO 80302, USA.; Source Info: Apr2009, Vol. 147 Issue 1/2, p31; Subject Term: SOLAR activity; Subject Term: HELIOSPHERE (Astrophysics); Subject Term: STELLAR activity; Subject Term: SOLAR radiation; Subject Term: SUN; Author-Supplied Keyword: Coronal mass ejections; Author-Supplied Keyword: Interplanetary medium; Author-Supplied Keyword: Solar-terrestrial relations; Number of Pages: 24p; Illustrations: 5 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1007/s11214-009-9542-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45110188&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tappin, S. James AU - Howard, Timothy A. T1 - Interplanetary Coronal Mass Ejections Observed in the Heliosphere: 2. Model and Data Comparison. JO - Space Science Reviews JF - Space Science Reviews Y1 - 2009/04// VL - 147 IS - 1/2 M3 - Article SP - 55 EP - 87 PB - Springer Science & Business Media B.V. SN - 00386308 AB - With the recent advancements in interplanetary coronal mass ejection (ICME) imaging it is necessary to understand how heliospheric images may be interpreted, particularly at large elongation angles. Of crucial importance is how the current methods used for coronal mass ejection measurement in coronagraph images must be changed to account for the large elongations involved in the heliosphere. We present results comparing a new model of interplanetary disturbances with heliospheric image data, from the Solar Mass Ejection Imager. A database containing a range of ICMEs simulated with varying parameters describing its topology, orientation, location and speed was produced and compared with two ICMEs observed in February and December 2004. We identify the simulated ICME that best matches the data, and use the parameters required to identify their three-dimensional leading-edge structure, orientation and kinematics. By constant comparison with the data we are able to keep track of small changes to the ICME topology and kinematic properties, thus for the first time are able to monitor how the dynamic interaction between the ICME and the interplanetary medium affects ICME evolution. This is the second part of a series of three papers, where the theory behind the model is presented in an accompanying paper and the physical implications are discussed in the third part. The first part considers the effects of Thomson scattering across the entire span of the disturbance and includes its apparent geometry at large elongations. We find that the model converges reliably to a solution for both events, although we identify four separate structures during the December period. Comparing the 3-D trajectory and source location with known associated features identified with other spacecraft, we find a remarkable agreement between the model and data. We conclude with a brief discussion of the physical implications of the model. [ABSTRACT FROM AUTHOR] AB - Copyright of Space Science Reviews is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORONAL mass ejections KW - SOLAR activity KW - SPACE vehicles KW - PLANETARY science KW - SOLAR system KW - Coronal mass ejections KW - Interplanetary medium KW - Solar-terrestrial relations N1 - Accession Number: 45110190; Tappin, S. James 1; Email Address: jtappin@nso.edu Howard, Timothy A. 2; Affiliation: 1: Air Force Research Laboratory, National Solar Observatory, Sunspot, NM 88349, USA. 2: Department of Space Studies, Southwest Research Institute, Boulder, CO 80302, USA.; Source Info: Apr2009, Vol. 147 Issue 1/2, p55; Subject Term: CORONAL mass ejections; Subject Term: SOLAR activity; Subject Term: SPACE vehicles; Subject Term: PLANETARY science; Subject Term: SOLAR system; Author-Supplied Keyword: Coronal mass ejections; Author-Supplied Keyword: Interplanetary medium; Author-Supplied Keyword: Solar-terrestrial relations; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 33p; Illustrations: 6 Diagrams, 7 Charts, 11 Graphs; Document Type: Article L3 - 10.1007/s11214-009-9550-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45110190&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Howard, Timothy A. AU - Tappin, S. James T1 - Interplanetary Coronal Mass Ejections Observed in the Heliosphere: 3. Physical Implications. JO - Space Science Reviews JF - Space Science Reviews Y1 - 2009/04// VL - 147 IS - 1/2 M3 - Article SP - 89 EP - 110 PB - Springer Science & Business Media B.V. SN - 00386308 AB - We conclude the heliospheric image series with this third and final instalment, where we consider the physical implications of our reconstruction of interplanetary coronal mass ejections from heliospheric imagers. In Paper 1 a review of the theoretical framework for the appearance of ICMEs in the heliosphere was presented and in Paper 2 a model was developed that extracted the three-dimensional structure and kinematics of interplanetary coronal mass ejections directly from SMEI images. Here we extend the model to include STEREO Heliospheric Imager data and reproduce the three-dimensional structure and kinematic evolution of a single Earth-directed interplanetary coronal mass ejection that was observed in November 2007. These measurements were made with each spacecraft independently using leading edge measurements obtained from each instrument. We found that when data from the three instruments was treated as a single collective, we were able to reproduce an estimate of the ICME structure and trajectory. There were some disparities between the modelled ICME and the in situ data, and we interpret this as a combination of a slightly more than spherically curved ICME structure and a corotating interaction region brought about by the creation of a coronal hole from the CME eruption. This is the first time evidence for such a structure has been presented and we believe that it is likely that many ICMEs are of this nature. [ABSTRACT FROM AUTHOR] AB - Copyright of Space Science Reviews is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORONAL mass ejections KW - SOLAR activity KW - SOLAR wind KW - SPACE vehicles KW - SOLAR system KW - Coronal mass ejections KW - Corotating interaction regions KW - Interplanetary medium KW - Solar-terrestrial relations N1 - Accession Number: 45110191; Howard, Timothy A. 1,2; Email Address: howard@boulder.swri.edu Tappin, S. James 1; Affiliation: 1: Air Force Research Laboratory, National Solar Observatory, Sunspot, NM 88349, USA. 2: Department of Space Studies, Southwest Research Institute, Boulder, CO 80302, USA.; Source Info: Apr2009, Vol. 147 Issue 1/2, p89; Subject Term: CORONAL mass ejections; Subject Term: SOLAR activity; Subject Term: SOLAR wind; Subject Term: SPACE vehicles; Subject Term: SOLAR system; Author-Supplied Keyword: Coronal mass ejections; Author-Supplied Keyword: Corotating interaction regions; Author-Supplied Keyword: Interplanetary medium; Author-Supplied Keyword: Solar-terrestrial relations; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 22p; Illustrations: 2 Color Photographs, 2 Diagrams, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1007/s11214-009-9577-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45110191&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brillson, L.J. AU - Mosbacker, H.L. AU - Doutt, D.L. AU - Dong, Y. AU - Fang, Z.-Q. AU - Look, D.C. AU - Cantwell, G. AU - Zhang, J. AU - Song, J.J. T1 - Nanoscale depth-resolved cathodoluminescence spectroscopy of ZnO surfaces and metal interfaces JO - Superlattices & Microstructures JF - Superlattices & Microstructures Y1 - 2009/04// VL - 45 IS - 4/5 M3 - Article SP - 206 EP - 213 SN - 07496036 AB - Abstract: The electronic properties of ZnO surfaces and interfaces has until recently been relatively unexplored. We have used a complement of ultrahigh vacuum scanning electron microscope (SEM)-based, depth-resolved cathodoluminescence spectroscopy (DRCLS), temperature-dependent charge transport, trap spectroscopy, and surface science techniques to probe the electronic and chemical properties of clean surfaces and interfaces on a nanometer scale. DRCLS reveals remarkable nanoscale correlations of native point defect distributions with surface and sub-surface defects calibrated with capacitance trap spectroscopies, atomic force microscopy, and Kelvin probe force microscopy. The measurement of these near-surface states associated with native point defects in the ZnO bulk and those induced by interface chemical bonding is a powerful extension of cathodoluminescence spectroscopy that provides a guide to understanding and controlling ZnO electronic contacts. [Copyright &y& Elsevier] AB - Copyright of Superlattices & Microstructures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide KW - SURFACES (Technology) KW - INTERFACES (Physical sciences) KW - MATERIALS -- Electric properties KW - CATHODOLUMINESCENCE KW - SPECTRUM analysis KW - ULTRAHIGH vacuum KW - SCANNING electron microscopy KW - Atomic force microscopy KW - Cathodoluminescence spectroscopy KW - Defects KW - Interface KW - Kelvin probe force microscopy KW - Scanning electron microscope KW - Surface KW - ZnO N1 - Accession Number: 37235096; Brillson, L.J. 1,2,3; Email Address: brillson.1@osu.edu Mosbacker, H.L. 2 Doutt, D.L. 2 Dong, Y. 3 Fang, Z.-Q. 4,5 Look, D.C. 4,5 Cantwell, G. 6 Zhang, J. 6 Song, J.J. 6; Affiliation: 1: Department of Electrical & Computer Engineering, The Ohio State University, Columbus, OH 43210, United States 2: Department of Physics, The Ohio State University, Columbus, OH 43210, United States 3: Center for Materials Research, The Ohio State University, Columbus, OH 43210, United States 4: Semiconductor Research Center, Wright State University, Dayton, OH 45433, United States 5: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, OH 45433, United States 6: ZN Technology, Inc. Brea, CA 92821, United States; Source Info: Apr2009, Vol. 45 Issue 4/5, p206; Subject Term: ZINC oxide; Subject Term: SURFACES (Technology); Subject Term: INTERFACES (Physical sciences); Subject Term: MATERIALS -- Electric properties; Subject Term: CATHODOLUMINESCENCE; Subject Term: SPECTRUM analysis; Subject Term: ULTRAHIGH vacuum; Subject Term: SCANNING electron microscopy; Author-Supplied Keyword: Atomic force microscopy; Author-Supplied Keyword: Cathodoluminescence spectroscopy; Author-Supplied Keyword: Defects; Author-Supplied Keyword: Interface; Author-Supplied Keyword: Kelvin probe force microscopy; Author-Supplied Keyword: Scanning electron microscope; Author-Supplied Keyword: Surface; Author-Supplied Keyword: ZnO; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.spmi.2008.11.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37235096&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martínez, O. AU - Avella, M. AU - Angulo, H. AU - Jiménez, J. AU - Lynch, C. AU - Bliss, D. T1 - Properties of orientation-patterned GaAs crystals studied by cathodoluminescence spectroscopy JO - Superlattices & Microstructures JF - Superlattices & Microstructures Y1 - 2009/04// VL - 45 IS - 4/5 M3 - Article SP - 337 EP - 342 SN - 07496036 AB - Abstract: Orientation-patterned GaAs crystals fabricated by periodically reversing the crystal orientation of the GaAs domains have been studied by cathodoluminescence. The main properties concerning the differences between the two domain orientations, , and the walls between the domains have been studied. The CL study reveals that the domain walls are decorated with defects, and the antibonds, As–As and Ga–Ga, are partially inhibited by other point defects. The local strain around the domain walls was mapped, showing non-uniform distribution, probably related to the distribution of point defects around the domain walls. [Copyright &y& Elsevier] AB - Copyright of Superlattices & Microstructures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM arsenide KW - DOMAIN structure KW - CATHODOLUMINESCENCE KW - SPECTRUM analysis KW - POINT defects KW - DISLOCATIONS in crystals KW - Cathodoluminescence KW - GaAs KW - Orientation-patterned crystals N1 - Accession Number: 37235115; Martínez, O. 1; Email Address: oscar@fmc.uva.es Avella, M. 1 Angulo, H. 1 Jiménez, J. 1 Lynch, C. 2 Bliss, D. 2; Affiliation: 1: Optronlab group, Centro I+D, Parque Científico Univ. de Valladolid, Paseo de Belén 1, 47011 Valladolid, Spain 2: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA 01731, USA; Source Info: Apr2009, Vol. 45 Issue 4/5, p337; Subject Term: GALLIUM arsenide; Subject Term: DOMAIN structure; Subject Term: CATHODOLUMINESCENCE; Subject Term: SPECTRUM analysis; Subject Term: POINT defects; Subject Term: DISLOCATIONS in crystals; Author-Supplied Keyword: Cathodoluminescence; Author-Supplied Keyword: GaAs; Author-Supplied Keyword: Orientation-patterned crystals; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.spmi.2008.11.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37235115&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sharma, Vivek AU - Kyoungweon Park AU - Srinivasarao, Mohan T1 - Shape separation of gold nanorods using centrifugation. JO - Proceedings of the National Academy of Sciences of the United States of America JF - Proceedings of the National Academy of Sciences of the United States of America Y1 - 2009/03/31/ VL - 106 IS - 13 M3 - Article SP - 4981 EP - 4985 SN - 00278424 AB - We demonstrate the use of centrifugation for efficient separation of colloidal gold nanorods from a mixture of nanorods and nanospheres. We elucidate the hydrodynamic behavior of nanoparticles of various shapes and illustrate that the shape-dependent drag causes particles to have shape-dependent sedimentation behavior. During centrifugation, nanoparticles undergo Brownian motion under an external field and move with different sedimentation velocities dictated by their Svedberg coefficients. This effects a separation of particles of different shape and size. Our theoretical analysis and experiments demonstrate the viability of using centrifugation to shape-separate a mixture of colloidal particles. [ABSTRACT FROM AUTHOR] AB - Copyright of Proceedings of the National Academy of Sciences of the United States of America is the property of National Academy of Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CENTRIFUGATION KW - NANOPARTICLES KW - BROWNIAN motion processes KW - SEDIMENTATION analysis KW - COLLOIDAL gold KW - colloidal hydrodynamics KW - nanoparticles KW - plasmon resonance KW - sedimentation KW - Svedberg coefficients N1 - Accession Number: 38016950; Sharma, Vivek 1,2 Kyoungweon Park 1,3 Srinivasarao, Mohan 1,4,5; Email Address: mohan@ptfe.gatech.edu; Affiliation: 1: School of Polymer Textile and Fiber Engineering, Georgia Institute of Technology, Atlanta, GA 30332 2: Hatsopoulos Microfluids Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Building 3-249, Cambridge, MA 02139 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7702 4: Center for Advanced Research on Optical Microscopy, Georgia Institute of Technology, Atlanta, GA 30332 5: School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332; Source Info: 3/31/2009, Vol. 106 Issue 13, p4981; Subject Term: CENTRIFUGATION; Subject Term: NANOPARTICLES; Subject Term: BROWNIAN motion processes; Subject Term: SEDIMENTATION analysis; Subject Term: COLLOIDAL gold; Author-Supplied Keyword: colloidal hydrodynamics; Author-Supplied Keyword: nanoparticles; Author-Supplied Keyword: plasmon resonance; Author-Supplied Keyword: sedimentation; Author-Supplied Keyword: Svedberg coefficients; Number of Pages: 5p; Illustrations: 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38016950&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miracle, D. B. AU - Harrowell, Peter T1 - Noncrystalline compact packings of hard spheres of two sizes: Bipyramids and the geometry of common neighbors. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2009/03/21/ VL - 130 IS - 11 M3 - Article SP - 114505 PB - American Institute of Physics SN - 00219606 AB - Insight into the efficient filling of space in systems of binary spheres is explored using bipyramids consisting of 3≤n≤8 tetrahedra sharing a common pair of spheres. Compact packings are sought in bipyramids consisting of larger hard spheres of unit radius and smaller hard spheres of radius 0.001≤R≤1. Seventy-seven distinct compact bipyramids are found. The number of distinct compact bipyramids increases with the number n of constituent tetrahedra. No compact bipyramids are found for R≥0.9473 and for 0.8493≥R≥0.7434. A topological instability eliminates compact packings for R≤0.1547. Pentagonal bipyramids cover a larger range in R than any other compact bipyramids studied. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPHERES KW - TETRAHEDRA KW - SPHERE packings KW - NUCLEAR size (Physics) KW - COMPACTING KW - PHYSICS research N1 - Accession Number: 53472846; Miracle, D. B. 1; Email Address: daniel.miracle@wpafb.af.mil Harrowell, Peter 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, Ohio, USA 2: School of Chemistry, University of Sydney, Sydney NSW 2006, Australia; Source Info: 3/21/2010, Vol. 130 Issue 11, p114505; Subject Term: SPHERES; Subject Term: TETRAHEDRA; Subject Term: SPHERE packings; Subject Term: NUCLEAR size (Physics); Subject Term: COMPACTING; Subject Term: PHYSICS research; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 6p; Illustrations: 1 Diagram, 8 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.3082008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=53472846&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mitra Yoonessi AU - Emily Seikel AU - Mark J. Pender T1 - Characterization and Modeling of Stable Colloids of Organically Surface Tailored Gold Nanoparticle Liquids. JO - Langmuir JF - Langmuir Y1 - 2009/03/17/ VL - 25 IS - 6 M3 - Article SP - 3369 EP - 3373 SN - 07437463 AB - Stable aggregate-free colloidal suspensions of gold nanoparticle liquids (NPLs) in toluene and dichlorobenzene were prepared. NPLs were made by reduction of tetrachloroauric acid in the presence of mercaptoethane sulfonate and further treatments with surfactants. Gold nanoparticles were coated with a novel ionic bilayer corona which consists of an ionic thiol linker and alkyl ammonium chloride surfactants. NPLs were capable of solvent removal and redispersing in toluene and dichlorobenzene. The average particle size, corona shell thickness, and extent of aggregation were examined using small-angle neutron scattering (SANS) and high resolution transmission electron microscopy (HR-TEM). The volume fraction normalized scattering spectra for the three series of samples exhibited one normalized curve showing a Guinier plateau in the low-q(q< 0.02 Å−1) regime. This indicates the presence of aggregate-free stable colloidal suspensions within the examined range. The experimental scattering spectra were simulated using a polydisperse core−shell model with Schulz polydispersity approximation. This approximation resulted in average core diameters and average shell thicknesses of NPLs in d-toluene. HR-TEM studies of NPLs exhibited the presence of core−shell structures containing gold cores and corona layers. [ABSTRACT FROM AUTHOR] AB - Copyright of Langmuir is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLOIDAL gold KW - TOLUENE KW - DICHLOROBENZENE KW - SURFACE active agents KW - CLUSTERING of particles KW - NEUTRON scattering KW - HIGH resolution electron microscopy KW - SIMULATION methods & models N1 - Accession Number: 36881743; Mitra Yoonessi 1 Emily Seikel 1 Mark J. Pender 1; Affiliation: 1: Materials and Manufacturing Directorate, Wright Patterson Air Force Research Laboratory, WPAFB, Ohio 45431, and Department of Chemical Engineering, University of Dayton, Dayton, Ohio 45469; Source Info: Mar2009, Vol. 25 Issue 6, p3369; Subject Term: COLLOIDAL gold; Subject Term: TOLUENE; Subject Term: DICHLOROBENZENE; Subject Term: SURFACE active agents; Subject Term: CLUSTERING of particles; Subject Term: NEUTRON scattering; Subject Term: HIGH resolution electron microscopy; Subject Term: SIMULATION methods & models; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36881743&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Elston, Levi J. AU - Yerkes, Kirk L. AU - Thomas, Scott K. AU - McQuillen, John T1 - Qualitative Evaluation of a Liquid-Vapor Separator Concept in Micro-Gravity Conditions. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/03/16/ VL - 1103 IS - 1 M3 - Article SP - 3 EP - 13 PB - American Institute of Physics SN - 0094243X AB - An innovative liquid-vapor separator design has been incorporated into a spray cooling experiment, which was flown recently on the NASA C-9 reduced gravity aircraft. This design is the latest in a series of designs that have been flown in microgravity and elevated gravity in relation to an experimental investigation into spray cooling performance with regard to possible application to high-performance aircraft undergoing combat maneuvers. Initially, significant problems occurred during flight testing due to the inability of the reservoir to separate the liquid coolant from the vapor under microgravity conditions, which resulted in a loss of coolant to the simulated electronic device that was being spray cooled. Improvements in the design of the liquid-vapor separator are described in this paper, and experimental data showing the performance of several generations of liquid-vapor separators are presented. The final separator design went through more rigorous evaluation to compare performance at multiple fill levels, each with a higher percentage of vapor space within the reservoir. It was found that, using the final reservoir design, stable flow operation was achieved in micro-gravity for mass flowrates of m = 14, 17.5, and 21 [g/s]. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERONAUTICS -- United States KW - REDUCED gravity environments KW - GRAVITY waves KW - ATOMIZATION KW - Liquid-Vapor Separator KW - Micro-Gravity Fluid Physics KW - Phase Separator KW - UNITED States. National Aeronautics & Space Administration N1 - Accession Number: 37044422; Elston, Levi J. 1; Email Address: levi.elston@us.af.mil Yerkes, Kirk L. 1 Thomas, Scott K. 2 McQuillen, John 3; Affiliation: 1: US Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433 2: Wright State University, Dayton, OH 45435 3: NASA John H. Glenn Research Center at Lewis Field, Cleveland, OH 44135; Source Info: 3/16/2009, Vol. 1103 Issue 1, p3; Subject Term: AERONAUTICS -- United States; Subject Term: REDUCED gravity environments; Subject Term: GRAVITY waves; Subject Term: ATOMIZATION; Author-Supplied Keyword: Liquid-Vapor Separator; Author-Supplied Keyword: Micro-Gravity Fluid Physics; Author-Supplied Keyword: Phase Separator; Company/Entity: UNITED States. National Aeronautics & Space Administration; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 11p; Illustrations: 2 Color Photographs, 3 Black and White Photographs, 5 Diagrams, 7 Graphs; Document Type: Article L3 - 10.1063/1.3115546 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37044422&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miley, George H. AU - Momota, Hiromu AU - Linchun Wu AU - Reilly, Michael P. AU - Teofilo, Vince L. AU - Burton, Rodney AU - Dell, Richard AU - Dell, Dick AU - Hargus, William A. T1 - IEC Thrusters for Space Probe Applications and Propulsion. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/03/16/ VL - 1103 IS - 1 M3 - Article SP - 164 EP - 174 PB - American Institute of Physics SN - 0094243X AB - Earlier conceptual design studies (Bussard, 1990; Miley et al., 1998; Burton et al., 2003) have described Inertial Electrostatic Confinement (IEC) fusion propulsion to provide a high-power density fusion propulsion system capable of aggressive deep space missions. However, this requires large multi-GW thrusters and a long term development program. As a first step towards this goal, a progression of near-term IEC thrusters, stating with a 1–10 kWe electrically-driven IEC jet thruster for satellites are considered here. The initial electrically-powered unit uses a novel multi-jet plasma thruster based on spherical IEC technology with electrical input power from a solar panel. In this spherical configuration, Xe ions are generated and accelerated towards the center of double concentric spherical grids. An electrostatic potential well structure is created in the central region, providing ion trapping. Several enlarged grid opening extract intense quasi-neutral plasma jets. A variable specific impulse in the range of 1000–4000 seconds is achieved by adjusting the grid potential. This design provides high maneuverability for satellite and small space probe operations. The multiple jets, combined with gimbaled auxiliary equipment, provide precision changes in thrust direction. The IEC electrical efficiency can match or exceed efficiencies of conventional Hall Current Thrusters (HCTs) while offering advantages such as reduced grid erosion (long life time), reduced propellant leakage losses (reduced fuel storage), and a very high power-to-weight ratio. The unit is ideally suited for probing missions. The primary propulsive jet enables delicate maneuvering close to an object. Then simply opening a second jet offset 180 degrees from the propulsion one provides a “plasma analytic probe” for interrogation of the object. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OUTER space KW - SPACE vehicles KW - SPACE probes KW - ELECTROMAGNETIC fields KW - PLASMA (Ionized gases) KW - ATOMIZATION KW - EXPLORATION KW - Fusion Thruster KW - Inertial Electrostatic Confinement KW - Plasma Thruster KW - Space Thruster N1 - Accession Number: 37044454; Miley, George H. 1; Email Address: ghmiley@illinois.edu Momota, Hiromu 1 Linchun Wu 1 Reilly, Michael P. 1 Teofilo, Vince L. 2 Burton, Rodney 3 Dell, Richard 4 Dell, Dick 4 Hargus, William A. 5; Affiliation: 1: Dept. of Nuclear, Plasma and Radiological Engineering, University of Illinois, Urbana, IL 2: Lockheed Martin Space Systems Co., Advanced Technology Center, Palo Alto, CA 3: Dept. of Aerospace Engineering, University of Illinois, Urbana, IL 4: Advanced Aerospace Resource Center (AARC), Raleigh, N.C. 5: Air Force Research Laboratory, Edwards AFB, CA; Source Info: 3/16/2009, Vol. 1103 Issue 1, p164; Subject Term: OUTER space; Subject Term: SPACE vehicles; Subject Term: SPACE probes; Subject Term: ELECTROMAGNETIC fields; Subject Term: PLASMA (Ionized gases); Subject Term: ATOMIZATION; Subject Term: EXPLORATION; Author-Supplied Keyword: Fusion Thruster; Author-Supplied Keyword: Inertial Electrostatic Confinement; Author-Supplied Keyword: Plasma Thruster; Author-Supplied Keyword: Space Thruster; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 11p; Illustrations: 5 Diagrams, 1 Chart, 1 Graph; Document Type: Article L3 - 10.1063/1.3115492 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37044454&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Korotkova, O. AU - Cai, Y. AU - Watson, E. T1 - Stochastic electromagnetic beams for LIDAR systems operating through turbulent atmosphere. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2009/03/15/ VL - 94 IS - 4 M3 - Article SP - 681 EP - 690 PB - Springer Science & Business Media B.V. SN - 09462171 AB - With the help of the generalized Huygens–Fresnel integral and the ABCD matrix approach a bistatic LIDAR system involving a rough target at a distant location in a turbulent atmosphere is modeled. The system operates by means of an optical beam which has arbitrary spectral composition, and states of coherence and polarization. The rough target is modeled as a combination of a Gaussian mirror and a thin phase screen which induces phase perturbations of the components of the electric field. The analytical form of the cross-spectral density matrix of the returned beam is determined, from which the effect of the rough target on the spectral density (intensity) and polarization of the returned wave is analyzed. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL radar KW - GAUSSIAN beams KW - PERTURBATION (Quantum dynamics) KW - HUYGENS' principle KW - FRESNEL integrals KW - ELECTROMAGNETIC waves KW - 42.25.Ja N1 - Accession Number: 36844458; Korotkova, O. 1; Email Address: korotkova@physics.miami.edu Cai, Y. 2 Watson, E. 3; Affiliation: 1: Department of Physics, University of Miami, Coral Gables, FL 33146, USA 2: School of Physical Science and Technology, Suzhou University, Suzhou 215006, China 3: Air Force Research Laboratory/Sensors Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Mar2009, Vol. 94 Issue 4, p681; Subject Term: OPTICAL radar; Subject Term: GAUSSIAN beams; Subject Term: PERTURBATION (Quantum dynamics); Subject Term: HUYGENS' principle; Subject Term: FRESNEL integrals; Subject Term: ELECTROMAGNETIC waves; Author-Supplied Keyword: 42.25.Ja; Number of Pages: 10p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1007/s00340-009-3404-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36844458&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Wei, Robert P. AU - Harlow, D. Gary AU - Ingraffea, Anthony AU - Larsen, James T1 - Preface JO - Engineering Fracture Mechanics JF - Engineering Fracture Mechanics Y1 - 2009/03/15/ VL - 76 IS - 5 M3 - Editorial SP - 619 EP - 619 SN - 00137944 N1 - Accession Number: 36942825; Wei, Robert P. 1 Harlow, D. Gary 1 Ingraffea, Anthony 2 Larsen, James 3; Affiliation: 1: Lehigh University, United States 2: Cornell University, United States 3: US Air Force Research Laboratory, United States; Source Info: Mar2009, Vol. 76 Issue 5, p619; Number of Pages: 1p; Document Type: Editorial L3 - 10.1016/j.engfracmech.2009.02.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36942825&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, Sangshik AU - Burns, James T. AU - Gangloff, Richard P. T1 - Fatigue crack formation and growth from localized corrosion in Al–Zn–Mg–Cu JO - Engineering Fracture Mechanics JF - Engineering Fracture Mechanics Y1 - 2009/03/15/ VL - 76 IS - 5 M3 - Article SP - 651 EP - 667 SN - 00137944 AB - Abstract: The effect of precorrosion on the fatigue life of aluminum alloy 7075-T6511 was measured, physical characteristics of corrosion topography plus fatigue damage were established by microscopy, and a corrosion modified equivalent initial flaw size (CM-EIFS) was established using fracture mechanics modeling. Fatigue life is reduced by clustered corrosion pits on the L–S surface from laboratory-EXCO exposure. Cracks initiate from pits clustered as a semi-elliptical surface micronotch rather than the deepest pits, consistent with shape-dependent stress intensity. Marker band analysis establishes that the number of cycles to form a crack about a pit cluster can be a significant fraction of total fatigue life. The CM-EIFS, back-calculated from fracture mechanics analysis of measured fatigue life, equals measured initiating-pit cluster size provided that important inputs are provided; such favorable comparison validates this approach to corrosion-fatigue interaction. Calculated CM-EIFS provides a metric to characterize alloy corrosion damage, and can be used to forward-model the effects of stress and loading environment on fatigue life distribution, critical for efficient alloy development. Use in prognosis of the fatigue performance of a service-corroded surface is hindered by uncertain non-destructive characterization of corrosion topography. [Copyright &y& Elsevier] AB - Copyright of Engineering Fracture Mechanics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM alloys -- Fatigue KW - ALUMINUM -- Corrosion KW - FRACTURE mechanics KW - MATHEMATICAL models KW - METALLIC surfaces KW - METALS -- Defects N1 - Accession Number: 36942829; Kim, Sangshik 1 Burns, James T. 2,3 Gangloff, Richard P. 3; Email Address: rpg7y@virginia.edu; Affiliation: 1: Division of Materials Science and Engineering, Engineering Research Center, Gyeongsang National University, Chinju, South Korea 2: Air Force Research Laboratory WPAFB, OH, USA 3: Department of Materials Science and Engineering, University of Virginia, Charlottesville, VA, USA; Source Info: Mar2009, Vol. 76 Issue 5, p651; Subject Term: ALUMINUM alloys -- Fatigue; Subject Term: ALUMINUM -- Corrosion; Subject Term: FRACTURE mechanics; Subject Term: MATHEMATICAL models; Subject Term: METALLIC surfaces; Subject Term: METALS -- Defects; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.engfracmech.2008.11.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36942829&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jha, S.K. AU - Larsen, J.M. AU - Rosenberger, A.H. T1 - Towards a physics-based description of fatigue variability behavior in probabilistic life-prediction JO - Engineering Fracture Mechanics JF - Engineering Fracture Mechanics Y1 - 2009/03/15/ VL - 76 IS - 5 M3 - Article SP - 681 EP - 694 SN - 00137944 AB - Abstract: We describe fatigue lifetime variability as a separation/overlap of a crack growth controlled life-limiting mechanism and a mean-lifetime dominating behavior. We implement this description through a bimodal probability density representing the superposition of the crack growth and the mean-lifetime dominating densities. Using the α+β titanium alloy Ti–6Al–2Sn–4Zr–6Mo, it is shown that microstructure, temperature, and loading variables have different influences on the life-limiting (worst-case) vs. the mean-lifetime behavior. We suggest that this different rates of response may be related to the development of a series of deformation heterogeneity levels in the material at any given loading condition, which appears to present some probability of a predominantly crack growth controlled mechanism controlling the worst-case behavior. Based on the proposed description of fatigue variability, a procedure is presented for predicting the probability of failure from a relatively small number of experiments. This description appears to explain the fatigue variability trends reported in other studies and is shown to be especially relevant for reducing the uncertainty in prediction of useful fatigue lifetime for fracture-critical structures. [Copyright &y& Elsevier] AB - Copyright of Engineering Fracture Mechanics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys -- Fatigue KW - METALS -- Microstructure KW - PROBABILITY theory KW - DEFORMATIONS (Mechanics) KW - PREDICTION models KW - HETEROGENEITY KW - α+β Titanium KW - Crack growth KW - Crack initiation KW - Fatigue variability KW - Life-limiting mechanism KW - Life-prediction KW - Probability of failure KW - Ti–6Al–2Sn–4Zr–6Mo KW - Worst-case fatigue N1 - Accession Number: 36942831; Jha, S.K. 1; Email Address: sushant.jha@wpafb.af.mil Larsen, J.M. 2 Rosenberger, A.H. 2; Affiliation: 1: Universal Technology Corporation, 1270 N. Fairfield Road, Dayton, OH 45432, United States 2: US Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLMN, Wright-Patterson Air Force Base, OH 45433, United States; Source Info: Mar2009, Vol. 76 Issue 5, p681; Subject Term: TITANIUM alloys -- Fatigue; Subject Term: METALS -- Microstructure; Subject Term: PROBABILITY theory; Subject Term: DEFORMATIONS (Mechanics); Subject Term: PREDICTION models; Subject Term: HETEROGENEITY; Author-Supplied Keyword: α+β Titanium; Author-Supplied Keyword: Crack growth; Author-Supplied Keyword: Crack initiation; Author-Supplied Keyword: Fatigue variability; Author-Supplied Keyword: Life-limiting mechanism; Author-Supplied Keyword: Life-prediction; Author-Supplied Keyword: Probability of failure; Author-Supplied Keyword: Ti–6Al–2Sn–4Zr–6Mo; Author-Supplied Keyword: Worst-case fatigue; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.engfracmech.2008.10.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36942831&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H.J. AU - Elhamri, S. AU - Ullrich, B. AU - Szmulowicz, F. AU - Brown, G.J. AU - Mitchel, W.C. T1 - Optimizing residual carriers in undoped InAs/GaSb superlattices for high operating temperature mid-infrared detectors JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2009/03/15/ VL - 311 IS - 7 M3 - Article SP - 1897 EP - 1900 SN - 00220248 AB - Abstract: The mid-infrared 21Å InAs/24Å GaSb superlattices (SLs) designed for the 4μm cutoff wavelength were grown by molecular beam epitaxy at growth temperatures between 370 and 430°C in order to reduce residual background carriers. The lowest density of 1.8×1011 cm−2 was obtained from the SLs grown at 400°C. With increasing growth temperature, in-plane hole mobility decreased from 8740 to 1400cm2/Vs due to increased interfacial roughness, while the photoluminescence (PL) intensity increased due to a decrease in the number of nonstoichiometric nonradiative defects. Further reduction of carrier density to 1×1011 cm−2 was achieved by increasing barrier width. As GaSb layer width increases from 24 to 48Å, the cutoff wavelength decreased from 4.1 to 3.4μm, which is still in the mid-infrared detection window. More importantly, a dramatic improvement on the PL intensity and the full width at half maximum was achieved from the SL samples with the wider GaSb widths. All mid-infrared SL samples investigated in our studies were residually p-type. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - INFRARED detectors KW - MOLECULAR beam epitaxy KW - GALLIUM compounds KW - PHOTOLUMINESCENCE KW - SEMICONDUCTORS KW - A3. Molecular beam epitaxy KW - A3. Superlattices KW - B1. Antimonides KW - B3. Infrared detector KW - B3. Semiconductor devices N1 - Accession Number: 37350725; Haugan, H.J. 1; Email Address: heather.haugan.ctr@us.af.mil Elhamri, S. 2 Ullrich, B. 3 Szmulowicz, F. 1 Brown, G.J. 1 Mitchel, W.C. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: Department of Physics, University of Dayton, Dayton, OH 45469, USA 3: Department of Physics and Astronomy, Bowling Green State University, Bowling Green, OH 43403, USA; Source Info: Mar2009, Vol. 311 Issue 7, p1897; Subject Term: SUPERLATTICES; Subject Term: INFRARED detectors; Subject Term: MOLECULAR beam epitaxy; Subject Term: GALLIUM compounds; Subject Term: PHOTOLUMINESCENCE; Subject Term: SEMICONDUCTORS; Author-Supplied Keyword: A3. Molecular beam epitaxy; Author-Supplied Keyword: A3. Superlattices; Author-Supplied Keyword: B1. Antimonides; Author-Supplied Keyword: B3. Infrared detector; Author-Supplied Keyword: B3. Semiconductor devices; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jcrysgro.2008.09.141 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37350725&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Metrangolo, Pierangelo AU - Carcenac, Yvan AU - Lahtinen, Manu AU - Pilati, Tullio AU - Rissanen, Kari AU - Vij, Ashwani AU - Resnati, Giuseppe T1 - Nonporous Organic Solids Capable of Dynamically Resolving Mixtures of Diiodoperfluoroalkanes. JO - Science JF - Science Y1 - 2009/03/13/ VL - 323 IS - 5920 M3 - Article SP - 1461 EP - 1464 SN - 00368075 AB - Halogen bonding has increasingly facilitated the assembly of diverse host-guest solids. Here, we show that a well-known class of organic salts, bis(trimethytammonium) alkane diiodides, can reversibly encapsulate α,ω-diiodoperfluoroalkanes (DIPFAs) through intermolecular interactions between the host's I- anions and the guest's terminal iodine substituents. The process is highly selective for the fluorocarbon that forms an l-…l(CF2)ml…l- superanion that is matched in length to the chosen dication. DIPFAs that are 2 to 12 carbons in length (common industrial intermediates) can thereby be isolated from mixtures by means of crystallization from solution upon addition of the dissolved size-matched ionic salt. The solid-state salts can also selectively capture the DIPFAs from the vapor phase, yielding the same product formed from solution despite a lack of porosity of the starting lattice structure. Heating liberates the DIPFAs and regenerates the original salt lattice, highlighting the practical potential for the system in separation applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANIC solid state chemistry KW - ALKANES KW - RESEARCH KW - HALOGEN compounds KW - AMMONIUM compounds KW - FLUOROCARBONS KW - CRYSTALLIZATION KW - SOLUTION (Chemistry) KW - POROSITY N1 - Accession Number: 37292187; Metrangolo, Pierangelo 1; Email Address: pierangelo.metrangolo@polimi.it Carcenac, Yvan 1 Lahtinen, Manu 2 Pilati, Tullio 3 Rissanen, Kari 4 Vij, Ashwani 5 Resnati, Giuseppe 1,3; Affiliation: 1: Laboratory of Nanostructured Fluorinated Materials, Department of Chemistry, Materials, and Chemical Engineering Giulio Natta, Politecnico di Milano, via L. Mancinelli 7, 20131 Milan, Italy 2: Department of Chemistry, University of Jyväskyä, Post Office Box 35, Jyväskyä FI-40014, Finland 3: Istituto di Scienze e Tecnologie Molecolari-Consigiio Nazionale delle Ricerche, University of Milan, 20133 Milan, Italy 4: Nanoscience Center, Department of Chemistry, University of Jyväslä, Post Office Box 35, Jyväskylä FI-40014, Finland 5: Air Force Research Laboratory/RZSP, 10 East Saturn Boulevard, Edwards Air Force Base, CA 93524, USA; Source Info: 3/13/2009, Vol. 323 Issue 5920, p1461; Subject Term: ORGANIC solid state chemistry; Subject Term: ALKANES; Subject Term: RESEARCH; Subject Term: HALOGEN compounds; Subject Term: AMMONIUM compounds; Subject Term: FLUOROCARBONS; Subject Term: CRYSTALLIZATION; Subject Term: SOLUTION (Chemistry); Subject Term: POROSITY; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37292187&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Panfili, Raphael AU - Dothe, Hoang AU - Gruninger, John AU - Duff, James W. AU - Brown, James H. T1 - All-Altitude Atmospheric Radiation Transport with SAMM2. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/03/11/ VL - 1100 IS - 1 M3 - Article SP - 77 EP - 80 PB - American Institute of Physics SN - 0094243X AB - This paper reviews the capabilities of SAMM2, a high-fidelity background radiance code. SAMM2 incorporates atmospheric climate and chemistry, line-of-sight geometry, spectroscopy and radiation transport into a unified and extensible code. It is capable of accurately predicting atmospheric radiances under both low-altitude local thermodynamic equilibrium as well as upper-altitude non-equilibrium conditions. SAMM2 provides comprehensive coverage in the .4 to 40 micron (250 to 25,000 wavenumber) wavelength region for arbitrary line-of-sight inputs. The capabilities of SAMM2 are demonstrated by computing radiance values for typical atmospheric conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATMOSPHERIC radiation KW - THERMODYNAMIC equilibrium KW - SPECTRUM analysis KW - ATMOSPHERIC chemistry KW - PHYSICAL sciences KW - non-LTE KW - Radiation Transport N1 - Accession Number: 37044176; Panfili, Raphael 1 Dothe, Hoang 1 Gruninger, John 1 Duff, James W. 1 Brown, James H. 2; Affiliation: 1: Spectral Sciences, Inc., 4 Fourth Avenue, Burlington, MA 01803, USA 2: Air Force Research Laboratory, Bedford, MA, USA; Source Info: 3/11/2009, Vol. 1100 Issue 1, p77; Subject Term: ATMOSPHERIC radiation; Subject Term: THERMODYNAMIC equilibrium; Subject Term: SPECTRUM analysis; Subject Term: ATMOSPHERIC chemistry; Subject Term: PHYSICAL sciences; Author-Supplied Keyword: non-LTE; Author-Supplied Keyword: Radiation Transport; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 4p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.3117077 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37044176&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baca, F. J. AU - Barnes, P. N. AU - Emergo, R. L. S. AU - Haugan, T. J. AU - Reichart, J. N. AU - Wu, J. Z. T1 - Control of BaZrO3 nanorod alignment in YBa2Cu3O7-x thin films by microstructural modulation. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2009/03/09/ VL - 94 IS - 10 M3 - Article SP - N.PAG PB - American Institute of Physics SN - 00036951 AB - The alignment of BaZrO3-nanorods (BZO-NRs) in YBa2Cu3O7-x was studied using vicinal substrates to modulate the microstructure. As the vicinal angle was increased to 10°, the angular splay of BZO-NRs increased. Correspondingly, the vortex pinning along the c-axis increased slightly, a possible consequence of enhanced vortex entanglement. Up to 10°, an increasing density of planar defects was observed, while at ∼20° an orthogonal reorientation of the BZO-NRs along the a-b planes occurs. This suggests that the modulated microstructure introduces a competing effect on the BZO-NR formation and alignment, and beyond a critical vicinal angle, c-axis alignment is no longer favorable for BZO-NRs. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - SOLID state electronics KW - THIN films KW - VORTEX motion KW - MODULATION (Electronics) KW - MICROMECHANICS N1 - Accession Number: 37043714; Baca, F. J. 1,2; Email Address: francisco.baca@wpafb.af.mil Barnes, P. N. 1 Emergo, R. L. S. 2 Haugan, T. J. 1 Reichart, J. N. 1 Wu, J. Z. 2; Affiliation: 1: U. S. Air Force Research Laboratory, Propulsion Directorate, WPAFB, Ohio 45433, 2: Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045,; Source Info: 3/9/2009, Vol. 94 Issue 10, pN.PAG; Subject Term: MICROSTRUCTURE; Subject Term: SOLID state electronics; Subject Term: THIN films; Subject Term: VORTEX motion; Subject Term: MODULATION (Electronics); Subject Term: MICROMECHANICS; Number of Pages: 3p; Illustrations: 1 Color Photograph, 4 Black and White Photographs, 1 Chart, 1 Graph; Document Type: Article L3 - 10.1063/1.3097234 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37043714&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sun, G. AU - Khurgin, J. B. AU - Soref, R. A. T1 - Practical enhancement of photoluminescence by metal nanoparticles. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2009/03/09/ VL - 94 IS - 10 M3 - Article SP - N.PAG PB - American Institute of Physics SN - 00036951 AB - We develop a simple yet rigorous theory of the photoluminescence (PL) enhancement in the vicinity of metal nanoparticles. The enhancement takes place during both optical excitation and emission. The strong dependence on the nanoparticle size enables optimization for maximum PL efficiency. Using the example of InGaN quantum dots (QDs) positioned near Ag nanospheres embedded in GaN, we show that strong enhancement can be obtained only for those QDs, atoms, or molecules that are originally inefficient in absorbing as well as in emitting optical energy. We then discuss practical implications for sensor technology. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOLUMINESCENCE KW - NANOPARTICLES KW - OPTICAL resonance KW - QUANTUM dots KW - ELECTRONIC excitation N1 - Accession Number: 37043759; Sun, G. 1; Email Address: greg.sun@umb.edu Khurgin, J. B. 2 Soref, R. A. 3; Affiliation: 1: Department of Physics, University of Massachusetts Boston, Boston, Massachusetts 02125, 2: Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, Maryland 21218, 3: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731,; Source Info: 3/9/2009, Vol. 94 Issue 10, pN.PAG; Subject Term: PHOTOLUMINESCENCE; Subject Term: NANOPARTICLES; Subject Term: OPTICAL resonance; Subject Term: QUANTUM dots; Subject Term: ELECTRONIC excitation; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.3097025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37043759&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bai, Zongwu AU - Shumaker, Joseph A. AU - Houtz, Marlene D. AU - Mirau, Peter A. AU - Dang, Thuy D. T1 - Fluorinated poly(arylenethioethersulfone) copolymers containing pendant sulfonic acid groups for proton exchange membrane materials JO - Polymer JF - Polymer Y1 - 2009/03/06/ VL - 50 IS - 6 M3 - Article SP - 1463 EP - 1469 SN - 00323861 AB - Abstract: Fluorinated sulfo-pendants poly(arylenethioethersulfone) copolymer, which contained 50mol% sulfonate content per repeat unit (6F-SPTES-50), were synthesized by a nucleophilic polycondensation from 4,4-(hexafluoroisopropylidene)-diphenylthiol, 3,3′-disulfonate-4,4′-difluorodiphenylsulfone and 4,4′-difluorodiphenylsulfone. The 6F-SPTES-50 copolymer possessed high molecular weight, exhibited good film formability and thermal stability, and maintained adequate mechanical strength after immersion in water for 24h. The proton conductivities of the 6F-SPTES-50 copolymer membrane increased with temperatures, reaching values above 120mS/cm at 85°C and 85% relative humidity. Preliminary MEA test shows acceptable performance, which indicated that these materials are promising proton exchange membranes (PEMs) for fuel cells operated at medium temperatures. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUOROPOLYMERS KW - COPOLYMERS KW - SULFONES KW - SULFONIC acids KW - ION-permeable membranes KW - PROTONS KW - POLYCONDENSATION KW - Fluorinated poly(arylenethioethersulfone) KW - Sulfonated polymer KW - Thermal stability N1 - Accession Number: 36771051; Bai, Zongwu 1; Email Address: zongwu.bai@wpafb.af.mil Shumaker, Joseph A. 1 Houtz, Marlene D. 1 Mirau, Peter A. 2 Dang, Thuy D. 2; Email Address: thuy.dang@wpafb.af.mil; Affiliation: 1: University of Dayton Research Institute, University of Dayton, 300 College Park Drive, Dayton, OH 45469, USA 2: Air Force Research Laboratory/RXBP, Materials and Manufacturing Directorate, Wright–Patterson Air Force Base, OH 45433, USA; Source Info: Mar2009, Vol. 50 Issue 6, p1463; Subject Term: FLUOROPOLYMERS; Subject Term: COPOLYMERS; Subject Term: SULFONES; Subject Term: SULFONIC acids; Subject Term: ION-permeable membranes; Subject Term: PROTONS; Subject Term: POLYCONDENSATION; Author-Supplied Keyword: Fluorinated poly(arylenethioethersulfone); Author-Supplied Keyword: Sulfonated polymer; Author-Supplied Keyword: Thermal stability; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.polymer.2009.01.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36771051&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Jata, Kumar V. AU - Lindgren, Eric A. AU - Chellapilla, Sandeep S. AU - Medina, Enrique A. T1 - ANALYTICAL MODEL OF THE SCATTERING OF GUIDED WAVES FROM FASTENER SITES WITH A STIFFNESS INTERFACE. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/03/03/ VL - 1096 IS - 1 M3 - Article SP - 145 EP - 152 PB - American Institute of Physics SN - 0094243X AB - In guided wave crack detection for structural health monitoring, there is a critical need to understand the sensitivity to joint interface conditions. Analytical models are presented for the interaction of ultrasonic waves from a cylindrical hole with an elastic insert coupled by a stiffness interface. Parametric studies are presented investigating the effect of variation in the contact conditions on the reflection and generation of secondary waves from the fastener. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRASONIC waves KW - FASTENERS KW - HOLES KW - SURFACE waves (Fluids) KW - SHEAR waves KW - ULTRASONICS KW - Analytical Model KW - Cylindrical Insert KW - Guided Waves KW - Interface Stiffness KW - Ultrasonic N1 - Accession Number: 37043960; Aldrin, John C. 1 Jata, Kumar V. 2 Lindgren, Eric A. 2 Chellapilla, Sandeep S. 3 Medina, Enrique A. 3; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA 2: Air Force Research Laboratory (AFRL/RXLP), Wright-Patterson AFB, OH 45433, USA 3: Radiance Technologies, Inc. 350 Wynn Drive, Huntsville, AL 30805; Source Info: 3/3/2009, Vol. 1096 Issue 1, p145; Subject Term: ULTRASONIC waves; Subject Term: FASTENERS; Subject Term: HOLES; Subject Term: SURFACE waves (Fluids); Subject Term: SHEAR waves; Subject Term: ULTRASONICS; Author-Supplied Keyword: Analytical Model; Author-Supplied Keyword: Cylindrical Insert; Author-Supplied Keyword: Guided Waves; Author-Supplied Keyword: Interface Stiffness; Author-Supplied Keyword: Ultrasonic; NAICS/Industry Codes: 332722 Bolt, Nut, Screw, Rivet, and Washer Manufacturing; NAICS/Industry Codes: 416330 Hardware merchant wholesalers; NAICS/Industry Codes: 339993 Fastener, Button, Needle, and Pin Manufacturing; NAICS/Industry Codes: 339990 All other miscellaneous manufacturing; NAICS/Industry Codes: 423710 Hardware Merchant Wholesalers; Number of Pages: 8p; Illustrations: 4 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.3114129 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37043960&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Murphy, R. Kim AU - Sabbagh, Harold A. AU - Sabbagh, Elias H. AU - Blodgett, Mark P. AU - Knopp, Jeremy AU - Aldrin, John C. T1 - MODEL DEVELOPMENT FOR BROADBAND SPIRAL-COIL EDDY-CURRENT PROBES. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/03/03/ VL - 1096 IS - 1 M3 - Article SP - 335 EP - 341 PB - American Institute of Physics SN - 0094243X AB - In this paper we demonstrate how the volume-integral algorithm of VIC-3D© can be applied to develop a computer code to design spiral-coil eddy-current probes for optimal broadband performance. This code will allow the designer to predict probe performance as a function of frequency, and is applied to model problems covering the frequency range of 107 to 1012 Hz. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - ELECTRIC currents KW - ALGORITHMS KW - COMPUTER programming KW - BROADBAND dielectric spectroscopy KW - Broadband Sensors KW - Eddy-Current Spiral Coils KW - Electromagnetic Nondestructive Evaluation KW - Volume-Integral Equations N1 - Accession Number: 37043866; Murphy, R. Kim 1 Sabbagh, Harold A. 1 Sabbagh, Elias H. 1 Blodgett, Mark P. 2 Knopp, Jeremy 2 Aldrin, John C. 3; Affiliation: 1: Victor Technologies, LLC, Bloomington, IN 47407-7706 USA 2: Air Force Research Laboratory (AFRL/MLLP), Wright-Patterson AFB, OH 45433, USA 3: Computational Tools, Gurnee, IL 60031, USA; Source Info: 3/3/2009, Vol. 1096 Issue 1, p335; Subject Term: EDDY currents (Electric); Subject Term: ELECTRIC currents; Subject Term: ALGORITHMS; Subject Term: COMPUTER programming; Subject Term: BROADBAND dielectric spectroscopy; Author-Supplied Keyword: Broadband Sensors; Author-Supplied Keyword: Eddy-Current Spiral Coils; Author-Supplied Keyword: Electromagnetic Nondestructive Evaluation; Author-Supplied Keyword: Volume-Integral Equations; NAICS/Industry Codes: 541519 Other Computer Related Services; NAICS/Industry Codes: 541511 Custom Computer Programming Services; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); Number of Pages: 7p; Illustrations: 4 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.3114223 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37043866&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Steffes, Gary AU - Knopp, Jeremy S. T1 - SIMULATION AND AUTOMATED DATA CLASSIFICATION FOR EDDY CURRENT INSPECTION OF FASTENER SITES USING A GMR SENSOR ARRAY WITH SHEET CURRENT EXCITATION. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/03/03/ VL - 1096 IS - 1 M3 - Article SP - 342 EP - 349 PB - American Institute of Physics SN - 0094243X AB - This paper explores improving crack detection capability for Giant Magnetoresistive (GMR) measurements through simulation and development of automated data analysis algorithms. Simulated studies were performed that highlight differences in the measurements for varying fastener material properties and indicate potential locations for greater sensitivity to cracks. Automated algorithms were demonstrated to register fastener locations and extract crack features. To address the particular challenge of crack detection at fasteners near part edges, a model-based approach is introduced. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY current testing KW - DATA analysis KW - NONDESTRUCTIVE testing KW - MATERIALS -- Dynamic testing KW - EDDY currents (Electric) KW - ALGORITHMS KW - AUTOSATE KW - Automated Signal Classification KW - Eddy Current KW - Fastener Sites KW - Feature Extraction KW - Modeling N1 - Accession Number: 37043864; Aldrin, John C. 1 Steffes, Gary 2 Knopp, Jeremy S. 2; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA 2: Air Force Research Laboratory (AFRL/RXLP), Wright-Patterson AFB, OH 45433, USA; Source Info: 3/3/2009, Vol. 1096 Issue 1, p342; Subject Term: EDDY current testing; Subject Term: DATA analysis; Subject Term: NONDESTRUCTIVE testing; Subject Term: MATERIALS -- Dynamic testing; Subject Term: EDDY currents (Electric); Subject Term: ALGORITHMS; Subject Term: AUTOSATE; Author-Supplied Keyword: Automated Signal Classification; Author-Supplied Keyword: Eddy Current; Author-Supplied Keyword: Fastener Sites; Author-Supplied Keyword: Feature Extraction; Author-Supplied Keyword: Modeling; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Illustrations: 8 Graphs; Document Type: Article L3 - 10.1063/1.3114225 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37043864&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chien-Ping Chiou AU - Blackshire, James L. AU - Thompson, R. Bruce T1 - TERAHERTZ RAY SYSTEM CALIBRATION AND MATERIAL CHARACTERIZATIONS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/03/03/ VL - 1096 IS - 1 M3 - Article SP - 410 EP - 417 PB - American Institute of Physics SN - 0094243X AB - Recently, terahertz ray imaging has emerged as one of the most promising new NDE techniques, and new systems are being developed for applications. In this work, we conducted system calibration on a new time-domain spectroscopy system, and then utilized this system to characterize glass-fiber composite plates and polyimide resin disks. Extensive experimental measurements in thru-transmission mode were made to map out the T-ray beam pattern in free space as well as to scan these two test materials. Material properties such as index of fraction and absorption coefficient are of the primary interest. Both results were shown in good agreement with known data. Using these characterized material properties, we also demonstrated accurate modeling of the T-ray signal propagating through the polyimide resin disk. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TERAHERTZ technology KW - ABSORPTION KW - SPECTRUM analysis KW - IMAGING systems in geophysics KW - STRUCTURAL engineering KW - PHYSICS research KW - Signal Modeling KW - System and Material Characterization KW - Terahertz Ray N1 - Accession Number: 37043854; Chien-Ping Chiou 1 Blackshire, James L. 2 Thompson, R. Bruce 1; Affiliation: 1: Center for Nondestructive Evaluation, Iowa State University, Ames, Iowa 50011 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio 45433; Source Info: 3/3/2009, Vol. 1096 Issue 1, p410; Subject Term: TERAHERTZ technology; Subject Term: ABSORPTION; Subject Term: SPECTRUM analysis; Subject Term: IMAGING systems in geophysics; Subject Term: STRUCTURAL engineering; Subject Term: PHYSICS research; Author-Supplied Keyword: Signal Modeling; Author-Supplied Keyword: System and Material Characterization; Author-Supplied Keyword: Terahertz Ray; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; Number of Pages: 8p; Illustrations: 2 Diagrams, 6 Graphs; Document Type: Article L3 - 10.1063/1.3114262 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37043854&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stoik, C. D. AU - Bohn, M. J. AU - Blackshire, J. L. T1 - NONDESTRUCTIVE EVALUATION OF AIRCRAFT COMPOSITES USING DIELECTRIC PROPERTIES AND IMAGING IN THE TERAHERTZ SPECTRUM. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/03/03/ VL - 1096 IS - 1 M3 - Article SP - 418 EP - 425 PB - American Institute of Physics SN - 0094243X AB - Terahertz imaging and dielectric property measurements were assessed as nondestructive evaluation techniques for damage to aircraft glass fiber composites. Samples with localized heat damage showed a minimal change in refractive index or absorption coefficient; however, material blistering was detected. Voids were located by terahertz imaging using amplitude and phase techniques. Delamination depths were approximated by measuring the timing of Fabry-Perot reflections. Evidence of bending stress damage and simulated hidden cracks was also detected with terahertz imaging. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - TERAHERTZ spectroscopy KW - DIELECTRICS KW - IMAGING systems in geophysics KW - STRUCTURAL engineering KW - PHYSICS research KW - Dielectricion KW - Nondestructive Evaluation KW - Properties KW - Terahertz Imaging KW - Terahertz Spectroscopy N1 - Accession Number: 37043853; Stoik, C. D. 1 Bohn, M. J. 1 Blackshire, J. L. 2; Affiliation: 1: Air Force Institute of Technology, Wright Patterson AFB, OH 45433 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, OH 45433; Source Info: 3/3/2009, Vol. 1096 Issue 1, p418; Subject Term: NONDESTRUCTIVE testing; Subject Term: TERAHERTZ spectroscopy; Subject Term: DIELECTRICS; Subject Term: IMAGING systems in geophysics; Subject Term: STRUCTURAL engineering; Subject Term: PHYSICS research; Author-Supplied Keyword: Dielectricion; Author-Supplied Keyword: Nondestructive Evaluation; Author-Supplied Keyword: Properties; Author-Supplied Keyword: Terahertz Imaging; Author-Supplied Keyword: Terahertz Spectroscopy; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 8p; Illustrations: 1 Color Photograph, 1 Diagram, 8 Graphs; Document Type: Article L3 - 10.1063/1.3114266 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37043853&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, Steven A. AU - Sathish, Shamachary AU - Jata, Kumar V. AU - Welter, John T. T1 - MODELING OF NON-CONTACT ACOUSTO-THERMAL SIGNATURE INTERROGATION (NCATS) OF FATIGUE DAMAGE IN TI-6AL-4V. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/03/03/ VL - 1096 IS - 1 M3 - Article SP - 541 EP - 548 PB - American Institute of Physics SN - 0094243X AB - Non-Contact Acousto-Thermal Signatures (NCATS) is a new method of Nondestructive Evaluation of materials involving the thermal response to high intensity sound. The method differs from traditional thermography in that a portion of the induced heat loading occurs from conversion of acoustic to thermal energy. Studies of fatigue samples indicate that the magnitude of the internal heat generation is a function of fatigue damage level. An analytical linear damped acoustic layer model is developed to specify the internal heat generation as a function of insonification amplitude, material damping, and sample geometry. The internal heat generation predicted by the model is compared to that calculated in a Finite Element analysis. The acoustic model is combined with the thermal diffusion equation to create a model for time temperature response curves. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Fatigue KW - ACOUSTICAL engineering KW - FINITE element method KW - THERMOGRAPHY KW - STRUCTURAL engineering KW - PHYSICS research KW - Fatigue KW - High Power Acoustics KW - Thermoelasticity N1 - Accession Number: 37043835; Martin, Steven A. 1 Sathish, Shamachary 2 Jata, Kumar V. 3 Welter, John T. 3; Affiliation: 1: NDE Computational Consultants, 7697 Aldridge Place, Dublin, OH 43017-8530 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0127 3: Air Force Research Laboratory, Metals, Ceramics and NDE Division, 2230 Tenth St., Wright Patterson AFB, Dayton, OH 45433-7817; Source Info: 3/3/2009, Vol. 1096 Issue 1, p541; Subject Term: MATERIALS -- Fatigue; Subject Term: ACOUSTICAL engineering; Subject Term: FINITE element method; Subject Term: THERMOGRAPHY; Subject Term: STRUCTURAL engineering; Subject Term: PHYSICS research; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: High Power Acoustics; Author-Supplied Keyword: Thermoelasticity; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 8p; Illustrations: 5 Diagrams, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.3114302 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37043835&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Knopp, Jeremy S. AU - Jata, Kumar V. T1 - MODEL-BASED INVERSION IN EDDY CURRENT IMAGE PROCESSING. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/03/03/ VL - 1096 IS - 1 M3 - Article SP - 719 EP - 726 PB - American Institute of Physics SN - 0094243X AB - To improve the ability of eddy current nondestructive evaluation to characterize fatigue cracks in multilayer structures, a model-based image processing approach is presented that fits approximate models based on first-principles to image data. Model refinements are also presented that address error associated with adjacent holes and poor hole centering due to cracks. Using this approach, improvements in the visual representation of image data for crack detection and the potential for characterization were demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - IMAGE processing KW - PLATES (Engineering) KW - STRUCTURAL engineering KW - PHYSICS research KW - Cracks KW - Eddy Current KW - Image Processing KW - Inverse KW - Method KW - Modeling N1 - Accession Number: 37043810; Aldrin, John C. 1 Knopp, Jeremy S. 2 Jata, Kumar V. 2; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA 2: Air Force Research Laboratory (AFRL/RXLP), Wright-Patterson AFB, OH 45433, USA; Source Info: 3/3/2009, Vol. 1096 Issue 1, p719; Subject Term: EDDY currents (Electric); Subject Term: IMAGE processing; Subject Term: PLATES (Engineering); Subject Term: STRUCTURAL engineering; Subject Term: PHYSICS research; Author-Supplied Keyword: Cracks; Author-Supplied Keyword: Eddy Current; Author-Supplied Keyword: Image Processing; Author-Supplied Keyword: Inverse; Author-Supplied Keyword: Method; Author-Supplied Keyword: Modeling; NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 812922 One-Hour Photofinishing; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 332313 Plate Work Manufacturing; Number of Pages: 8p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1063/1.3114327 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37043810&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sabbagh, Elias H. AU - Sabbagh, Harold A. AU - Murphy, R. Kim AU - Sheila-Vadde, Aparna AU - Blodgett, Mark P. AU - Knopp, Jeremy AU - Aldrin, John C. T1 - MODELING ANISOTROPIC GRAIN NOISE IN EDDY-CURRENT NDE: RELIABILITY ASSESSMENT OF INVERSE PROBLEMS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/03/03/ VL - 1096 IS - 1 M3 - Article SP - 742 EP - 749 PB - American Institute of Physics SN - 0094243X AB - We use the proprietary volume-integral code, VIC-3D©, to develop a numerical model of microstructural noise in a titanium-like crystal of hexagonal symmetry with random conductivity distributions, and then apply the model to solve inverse problems in which the size of a surface-breaking flaw is estimated in the presence of the noise generated by the random conductivity. The crucial role of sensitivity parameters and other ‘estimation metrics’ in assessing the quality of the inversion will be discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANISOTROPY KW - EDDY currents (Electric) KW - MICROSTRUCTURE KW - ELECTRIC conductivity KW - STRUCTURAL engineering KW - PHYSICS research KW - Anisotropic Graim Noise KW - Electromagnetic Nondestructive Evaluation KW - Polycrystalline Metals KW - Volume-Integral Equations N1 - Accession Number: 37043806; Sabbagh, Elias H. 1 Sabbagh, Harold A. 1 Murphy, R. Kim 1 Sheila-Vadde, Aparna 2 Blodgett, Mark P. 3 Knopp, Jeremy 3 Aldrin, John C. 4; Affiliation: 1: Victor Technologies, LLC, Bloomington, IN 47407-7706 USA 2: GE India Technology Center, Bangalore 560066 INDIA 3: Air Force Research Laboratory (AFRL/MLLP), Wright-Patterson AFB, OH 45433, USA 4: Computational Tools, Gurnee, IL 60031, USA; Source Info: 3/3/2009, Vol. 1096 Issue 1, p742; Subject Term: ANISOTROPY; Subject Term: EDDY currents (Electric); Subject Term: MICROSTRUCTURE; Subject Term: ELECTRIC conductivity; Subject Term: STRUCTURAL engineering; Subject Term: PHYSICS research; Author-Supplied Keyword: Anisotropic Graim Noise; Author-Supplied Keyword: Electromagnetic Nondestructive Evaluation; Author-Supplied Keyword: Polycrystalline Metals; Author-Supplied Keyword: Volume-Integral Equations; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 8p; Illustrations: 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.3114331 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37043806&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lissenden, Cliff J. AU - Blackshire, James L. AU - Puthillath, Padma K. T1 - STRUCTURAL HEALTH MONITORING OF COMPOSITE LAMINATES WITH EMBEDDED PIEZOELECTRIC FIBERS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/03/03/ VL - 1096 IS - 1 M3 - Article SP - 974 EP - 981 PB - American Institute of Physics SN - 0094243X AB - The actuation of ultrasonic guided waves in a carbon fiber reinforced polymer plate from embedded metal core piezoelectric fibers is studied for structural health monitoring applications. A linear array of fibers embedded at the midplane can generate guided waves transverse to the fiber direction. Finite element simulations show that a significant source influence is associated with the small diameter piezoelectric fibers. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRASONIC waves KW - CARBON fibers KW - PIEZOELECTRIC materials KW - FINITE element method KW - EMBEDDED computer systems KW - PHYSICS research KW - Lamb Waves KW - Piezoelectric Sensors KW - Structural Health Monitoring N1 - Accession Number: 37043775; Lissenden, Cliff J. 1 Blackshire, James L. 2 Puthillath, Padma K. 1; Affiliation: 1: Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802 2: NDE Branch, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433; Source Info: 3/3/2009, Vol. 1096 Issue 1, p974; Subject Term: ULTRASONIC waves; Subject Term: CARBON fibers; Subject Term: PIEZOELECTRIC materials; Subject Term: FINITE element method; Subject Term: EMBEDDED computer systems; Subject Term: PHYSICS research; Author-Supplied Keyword: Lamb Waves; Author-Supplied Keyword: Piezoelectric Sensors; Author-Supplied Keyword: Structural Health Monitoring; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 334111 Electronic Computer Manufacturing; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 8p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.3114363 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37043775&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, R. W. AU - Sathish, Shamachary AU - Jata, Kumar V. AU - Welter, John T. AU - Matson, Larry E. T1 - ULTRASONIC MEASUREMENT OF LOCALIZED ELASTIC PROPERTIES AND THICKNESS OF SILICON CARBIDE MIRRORS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/03/03/ VL - 1096 IS - 1 M3 - Article SP - 1295 EP - 1300 PB - American Institute of Physics SN - 0094243X AB - Silicon Carbide (SiC) mirrors have significant advantages compared to glass mirrors. They are less dense, possess very high elastic stiffness and have a low thermal expansion coefficient over a wide temperature range, and hence suitable for aerospace applications. However, the manufacturing process induces significant residual stress and thickness variation. The polishing process used to produce high quality mirrors, alters both the residual stress and thickness of the mirror. In some cases this might produce local damage and limit the usability of the mirror. At present there is a need for NDE techniques to evaluate the damage and ensure the quality of SiC mirrors. To address this issue, we have developed ultrasonic methods to measure simultaneously the local variation in thickness and the through-thickness longitudinal wave velocity in SiC mirrors. The impact of the variations in the material properties are discussed with reference to the changes in residual stress distribution after polishing. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRASONIC waves KW - MIRRORS KW - SILICON carbide KW - ELASTICITY KW - THERMAL expansion KW - SILICON compounds KW - SIC Mirror KW - Thickness KW - Ultrasonic KW - Velocity N1 - Accession Number: 37043984; Martin, R. W. 1 Sathish, Shamachary 1 Jata, Kumar V. 2 Welter, John T. 2 Matson, Larry E. 3; Affiliation: 1: University of Dayton Research Institute, 300 College Park Drive, Dayton, OH 45469-0120 2: Air Force Research Laboratory, Metals, Ceramics and NDE Division, RXLP, 2230 Tenth St., Wright Patterson AFB, Dayton, OH 45433-7817 3: Air Force Research Laboratory, Metals, Ceramics and NDE Division, RXLN, 2230 Tenth St., WPAFB, OH, 45433; Source Info: 3/3/2009, Vol. 1096 Issue 1, p1295; Subject Term: ULTRASONIC waves; Subject Term: MIRRORS; Subject Term: SILICON carbide; Subject Term: ELASTICITY; Subject Term: THERMAL expansion; Subject Term: SILICON compounds; Author-Supplied Keyword: SIC Mirror; Author-Supplied Keyword: Thickness; Author-Supplied Keyword: Ultrasonic; Author-Supplied Keyword: Velocity; NAICS/Industry Codes: 414390 Other home furnishings merchant wholesalers; NAICS/Industry Codes: 327215 Glass Product Manufacturing Made of Purchased Glass; NAICS/Industry Codes: 423220 Home Furnishing Merchant Wholesalers; NAICS/Industry Codes: 238150 Glass and Glazing Contractors; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 6p; Illustrations: 6 Black and White Photographs, 2 Diagrams; Document Type: Article L3 - 10.1063/1.3114105 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37043984&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Knopp, Jeremy S. AU - Lindgren, Eric A. AU - Jata, Kumar V. T1 - MODEL-ASSISTED PROBABILITY OF DETECTION EVALUATION FOR EDDY CURRENT INSPECTION OF FASTENER SITES. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/03/03/ VL - 1096 IS - 1 M3 - Article SP - 1784 EP - 1791 PB - American Institute of Physics SN - 0094243X AB - A model-assisted approach for the design and execution of probability of detection (POD) studies is proposed. General agreement was achieved between experimental and full-model assisted results for eddy current inspection of cracks at fastener sites located at both the first and second layers. The accuracy of the POD results was found to be dependent upon the NDE model and assumptions in the model-assisted POD evaluation. Insight is presented for improving the quality of future studies. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - EDDY current testing KW - ELECTRIC currents KW - DEMODULATION (Electronics) KW - MANUFACTURING processes KW - Cracks KW - Eddy Current KW - Fastener Sites KW - Modeling KW - Probability of Detection (POD) N1 - Accession Number: 37043914; Aldrin, John C. 1 Knopp, Jeremy S. 2 Lindgren, Eric A. 2 Jata, Kumar V. 2; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA 2: Air Force Research Laboratory (AFRL/RXLP), Wright-Patterson AFB, OH 45433, USA; Source Info: 3/3/2009, Vol. 1096 Issue 1, p1784; Subject Term: EDDY currents (Electric); Subject Term: EDDY current testing; Subject Term: ELECTRIC currents; Subject Term: DEMODULATION (Electronics); Subject Term: MANUFACTURING processes; Author-Supplied Keyword: Cracks; Author-Supplied Keyword: Eddy Current; Author-Supplied Keyword: Fastener Sites; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Probability of Detection (POD); NAICS/Industry Codes: 333994 Industrial Process Furnace and Oven Manufacturing; NAICS/Industry Codes: 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables; Number of Pages: 8p; Illustrations: 1 Diagram, 7 Graphs; Document Type: Article L3 - 10.1063/1.3114175 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37043914&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shearer, J. AU - Heebl, J. AU - Brausch, J. AU - Lindgren, E. T1 - PROGRESS IN DEVELOPING TRANSFER FUNCTIONS FOR SURFACE SCANNING EDDY CURRENT INSPECTIONS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/03/03/ VL - 1096 IS - 1 M3 - Article SP - 1870 EP - 1877 PB - American Institute of Physics SN - 0094243X AB - As US Air Force (USAF) aircraft continue to age, additional inspections are required for structural components. The validation of new inspections typically requires a capability demonstration of the method using representative structure with representative damage. To minimize the time and cost required to prepare such samples, Electric Discharge machined (EDM) notches are commonly used to represent fatigue cracks in validation studies. However, the sensitivity to damage typically changes as a function of damage type. This requires a mathematical relationship to be developed between the responses from the two different flaw types to enable the use of EDM notched samples to validate new inspections. This paper reviews progress to develop transfer functions for surface scanning eddy current inspections of aluminum and titanium alloys found in structural aircraft components. Multiple samples with well characterized grown fatigue cracks and master gages with EDM notches, both with a range of flaw sizes, were used to collect flaw signals with USAF field inspection equipment. Analysis of this empirical data was used to develop a transfer function between the response from the EDM notches and grown fatigue cracks. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - EVALUATION KW - EDDY current testing KW - ELECTRIC currents KW - UNITED States KW - Eddy Current KW - EDM KW - Fatigue Crack KW - Field Inspection KW - Surface Scanning KW - Transfer Function KW - UNITED States. Air Force N1 - Accession Number: 37043902; Shearer, J. 1 Heebl, J. 1 Brausch, J. 2 Lindgren, E. 1; Affiliation: 1: Air Force Research Laboratory, Nondestructive Evaluation Branch, Wright Patterson Air Force Base, Dayton, OH 45433 2: Air Force Research Laboratory, Materials Integrity Branch, Wright Patterson Air Force Base, Dayton, OH 45433; Source Info: 3/3/2009, Vol. 1096 Issue 1, p1870; Subject Term: EDDY currents (Electric); Subject Term: EVALUATION; Subject Term: EDDY current testing; Subject Term: ELECTRIC currents; Subject Term: UNITED States; Author-Supplied Keyword: Eddy Current; Author-Supplied Keyword: EDM; Author-Supplied Keyword: Fatigue Crack; Author-Supplied Keyword: Field Inspection; Author-Supplied Keyword: Surface Scanning; Author-Supplied Keyword: Transfer Function; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 8p; Illustrations: 1 Color Photograph, 6 Graphs; Document Type: Article L3 - 10.1063/1.3114187 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37043902&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varanasi, C.V. AU - Leedy, K.D. AU - Tomich, D.H. AU - Subramanyam, G. T1 - Large area Ba1− x Sr x TiO3 thin films for microwave applications deposited by pulsed laser ablation JO - Thin Solid Films JF - Thin Solid Films Y1 - 2009/03/02/ VL - 517 IS - 9 M3 - Article SP - 2878 EP - 2881 SN - 00406090 AB - Abstract: Large area Ba1− x Sr x TiO3 (BST) thin films with x =0.4 or x =0.5 were deposited on 75 mm diameter Si wafers in a pulsed laser deposition (PLD) chamber enabling full-wafer device fabrication using standard lithography. The deposition conditions were re-optimized for large PLD chambers to obtain uniform film thickness, grain size, crystal structure, orientation, and dielectric properties of BST films. X-ray diffraction and microstructural analyses on the BST films grown on Pt/Au/Ti electrodes deposited on SiO2/Si wafers revealed films with (110) preferred orientation with a grain size <100 nm. An area map of the thickness and crystal orientation of a BST film deposited on SiO2/Si wafer also showed (110) preferred orientation with a film thickness variation <6%. Large area BST films were found to have a high dielectric tunability of 76% at an electric field of 400 kV/cm and dielectric loss tangent below 0.03 at microwave frequencies up to 20 GHz and a commutation quality factor of ~4200. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM dioxide films KW - BARIUM compounds KW - LASER ablation KW - PULSED laser deposition KW - LITHOGRAPHY KW - X-ray diffraction KW - MICROSTRUCTURE KW - DIELECTRICS KW - Ferroelectric properties KW - Laser ablation KW - Oxides KW - Physical vapor deposition N1 - Accession Number: 36563859; Varanasi, C.V. 1,2; Email Address: Chakrapani.varanasi@wpafb.af.mil Leedy, K.D. 2 Tomich, D.H. 3 Subramanyam, G. 4; Affiliation: 1: University of Dayton Research Institute, Dayton, OH, 45469 USA 2: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson Air Force Base, Ohio, 45433 USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio, 45433 USA 4: University of Dayton, Dayton, OH, 45469 USA; Source Info: Mar2009, Vol. 517 Issue 9, p2878; Subject Term: TITANIUM dioxide films; Subject Term: BARIUM compounds; Subject Term: LASER ablation; Subject Term: PULSED laser deposition; Subject Term: LITHOGRAPHY; Subject Term: X-ray diffraction; Subject Term: MICROSTRUCTURE; Subject Term: DIELECTRICS; Author-Supplied Keyword: Ferroelectric properties; Author-Supplied Keyword: Laser ablation; Author-Supplied Keyword: Oxides; Author-Supplied Keyword: Physical vapor deposition; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 323119 Other printing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.tsf.2008.10.123 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36563859&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Helton, William S. AU - Matthews, Gerald AU - Warm, Joel S. T1 - Stress state mediation between environmental variables and performance: The case of noise and vigilance JO - Acta Psychologica JF - Acta Psychologica Y1 - 2009/03// VL - 130 IS - 3 M3 - Article SP - 204 EP - 213 SN - 00016918 AB - Abstract: Effects of environmental variables on performance may be mediated by individual stress states. In this study the effects of jet-aircraft engine noise and signal salience on vigilance performance and self-reported stress state were examined. One hundred and ninety-two (96 female and 96 male) participants were randomly assigned to four experimental conditions consisting of 48 participants each resulting from the factorial combination of signal salience (high and low salience signals) and noise (95 dBA intermittent aircraft noise or quiet). Performance metrics and self-reported stress state (Task Engagement, Distress, and Worry) were collected. Performance in the noise conditions was significantly better than in the quiet conditions. Performance in the high salience conditions was significantly better than the low salience conditions. Noise elevated Task Engagement and low signal salience elevated Distress. Moreover, structural equation model analyses were used to examine stress state mediation between the experimental variables and performance. These analyses indicated Engagement mediates between noise and vigilance performance. [Copyright &y& Elsevier] AB - Copyright of Acta Psychologica is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MEDIATION KW - ABSTRACTING KW - FLUIDS KW - DISPUTE resolution (Law) KW - Distress KW - Noise KW - Stress KW - Sustained attention KW - Vigilance N1 - Accession Number: 36972008; Helton, William S. 1; Email Address: deak_helton@yahoo.com Matthews, Gerald 2 Warm, Joel S. 3; Affiliation: 1: Department of Psychology, University of Canterbury, Private Bag 4800, Christchurch, New Zealand 2: University of Cincinnati, Ohio, USA 3: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio, USA; Source Info: Mar2009, Vol. 130 Issue 3, p204; Subject Term: MEDIATION; Subject Term: ABSTRACTING; Subject Term: FLUIDS; Subject Term: DISPUTE resolution (Law); Author-Supplied Keyword: Distress; Author-Supplied Keyword: Noise; Author-Supplied Keyword: Stress; Author-Supplied Keyword: Sustained attention; Author-Supplied Keyword: Vigilance; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.actpsy.2008.12.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36972008&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Povitsky, Alex AU - Pathak, Kedar AU - Gaitonde, Datta T1 - Dynamics of Plumes Generated by Local Injection of Ablated Material. JO - AIAA Journal JF - AIAA Journal Y1 - 2009/03// VL - 47 IS - 3 M3 - Article SP - 655 EP - 655 SN - 00011452 AB - Numerical modeling is employed to study the heat transfer modulation between the thermal protection shield and the gas flow that is caused by ejection of underexpanded pyrolysis gases through the cracks in the thermal protection shield. The simulations are performed for an axisymmetric bluff body flying at Mach 7. The influence of the geometry of the thermal protection shield on the heat transfer pattern is studied for two representative shapes. The results are presented for three different flight altitudes (low, ground level; moderate, 20 km; and high, 30 km). At the low altitude, the plume pressure is lower than the pressure behind the detached front shock wave and the plume propagates slowly along the wall surface. At high and moderate altitudes, the plume path (and, consequently, the convective heat transfer between the thermal protection shield and the plume) depends on the plume interaction with the bow shock wave. The effect of viscosity for the plume injection conditions and freestream Mach number considered is found to be negligible at simulated altitudes. The effect of the initial pressure of pyrolysis gas on the plume dynamics is significant. The presence of the blast wave associated with the underexpanded plume alters the heat transfer and increases mixing. Finally, the enhanced heat transfer caused by the emergence of multiple plumes is investigated. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROSPACE engineering KW - PLUMES (Fluid dynamics) KW - ABLATIVE materials KW - ABLATION (Aerothermodynamics) KW - MATHEMATICAL models KW - HEAT transfer N1 - Accession Number: 36902931; Povitsky, Alex 1 Pathak, Kedar 1 Gaitonde, Datta 2; Affiliation: 1: University of Akron, Akron, Ohio 44325-3903. 2: U.S. Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433.; Source Info: Mar2009, Vol. 47 Issue 3, p655; Subject Term: AEROSPACE engineering; Subject Term: PLUMES (Fluid dynamics); Subject Term: ABLATIVE materials; Subject Term: ABLATION (Aerothermodynamics); Subject Term: MATHEMATICAL models; Subject Term: HEAT transfer; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36902931&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rizzetta, Donald P. AU - Visbal, Miguel R. T1 - Large Eddy Simulation of Plasma-Based Control Strategies for Bluff Body Flow. JO - AIAA Journal JF - AIAA Journal Y1 - 2009/03// VL - 47 IS - 3 M3 - Article SP - 717 EP - 717 SN - 00011452 AB - Large eddy simulation was used to explore plasma-based control strategies for the flow past a circular cylinder in crossflow at a Reynolds number of 10,000. Solutions were obtained to the Navier-Stokes equations, using a simple phenomenological model to represent plasma-induced body forces imparted by actuators on the surrounding fluid. The numerical method used a high-fidelity time-implicit scheme, and an overset grid approach. Two fundamentally different control strategies were investigated, consisting of larger actuators that produced a wall-jet-like flow, and smaller actuators that perturbed the unstable shear layers near the separation location. The larger actuators achieved control via a "Coanda" effect, and were operated both continuously and in a pulsed manner. For pulsed cases, two different bistable states with nonzero time-mean lift were identified. All control cases resulted in at least a 50% decrease in drag, as well as elimination of oscillatory lift. Comparison is made with available experimental data for the baseline case where no control was enforced. Features of the control flowfields are described, and resultant solutions are compared with each other. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROSPACE engineering KW - EDDIES KW - EDDY flux KW - REYNOLDS number KW - NAVIER-Stokes equations KW - ACTUATORS N1 - Accession Number: 36902937; Rizzetta, Donald P. 1 Visbal, Miguel R. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433-7512.; Source Info: Mar2009, Vol. 47 Issue 3, p717; Subject Term: AEROSPACE engineering; Subject Term: EDDIES; Subject Term: EDDY flux; Subject Term: REYNOLDS number; Subject Term: NAVIER-Stokes equations; Subject Term: ACTUATORS; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36902937&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Qingfei Chen AU - Liang Huang AU - Ying-Cheng Lai AU - Dietz, David T1 - Dynamical mechanism of intrinsic localized modes in microelectromechanical oscillator arrays. JO - Chaos JF - Chaos Y1 - 2009/03// VL - 19 IS - 1 M3 - Article SP - 013127 PB - American Institute of Physics SN - 10541500 AB - Experimental evidence of intrinsic localized modes (ILMs) in microelectromechanical oscillator arrays has been reported recently. In this paper, we carry out a detailed analysis of a new mechanism for ILMs in typical experimental settings; that is, spatiotemporal chaos is ubiquitous and it provides a natural platform for actual realization of various ILMs through frequency control. We find that unstable periodic orbits associated with ILMs are pivotal for spatiotemporal chaos to arise and these orbits are the keys to stabilizing ILMs by frequency modulation. [ABSTRACT FROM AUTHOR] AB - Copyright of Chaos is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DYNAMICS KW - MICROELECTROMECHANICAL systems KW - ELECTROMECHANICAL devices KW - NONLINEAR oscillators KW - ELECTRIC oscillators KW - CHAOS theory KW - NONLINEAR theories KW - DEMODULATION (Electronics) KW - RADIO frequency modulation N1 - Accession Number: 37258725; Qingfei Chen 1 Liang Huang 1 Ying-Cheng Lai 1,2 Dietz, David 3; Affiliation: 1: Department of Electrical Engineering, Arizona State University, Tempe, Arizona 85287, 2: Department of Physics, Arizona State University, Tempe, Arizona 85287, 3: Air Force Research Laboratory, Directed Energy Directorate, 3550 Aberdeen Ave. SE, Kirtland Air Force Base, New Mexico 87117,; Source Info: Mar2009, Vol. 19 Issue 1, p013127; Subject Term: DYNAMICS; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: ELECTROMECHANICAL devices; Subject Term: NONLINEAR oscillators; Subject Term: ELECTRIC oscillators; Subject Term: CHAOS theory; Subject Term: NONLINEAR theories; Subject Term: DEMODULATION (Electronics); Subject Term: RADIO frequency modulation; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334512 Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use; NAICS/Industry Codes: 334514 Totalizing Fluid Meter and Counting Device Manufacturing; NAICS/Industry Codes: 334290 Other Communications Equipment Manufacturing; NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; Number of Pages: 9p; Illustrations: 4 Diagrams, 8 Graphs; Document Type: Article L3 - 10.1063/1.3078706 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37258725&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Longacre, Edward G. T1 - General Lee's Army: From Victory to Collapse. JO - Journal of American History JF - Journal of American History Y1 - 2009/03// VL - 95 IS - 4 M3 - Book Review SP - 1177 EP - 1178 PB - Oxford University Press / USA SN - 00218723 AB - The article reviews the book "General Lee's Army: From Victory to Collapse," by Joseph T. Glatthaar. KW - NONFICTION KW - CONFEDERATE States of America. Army of Northern Virginia KW - GLATTHAAR, Joseph T., 1956- KW - GENERAL Lee's Army: From Victory to Collapse (Book) N1 - Accession Number: 37206218; Longacre, Edward G. 1; Affiliation: 1: Headquarters Air Combat Command Langley Air Force Base, Virginia; Source Info: Mar2009, Vol. 95 Issue 4, p1177; Subject Term: NONFICTION; Company/Entity: CONFEDERATE States of America. Army of Northern Virginia; Reviews & Products: GENERAL Lee's Army: From Victory to Collapse (Book); People: GLATTHAAR, Joseph T., 1956-; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37206218&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lewis, W. K. AU - Rumchik, C. G. T1 - Measurement of apparent temperature in post-detonation fireballs using atomic emission spectroscopy. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2009/03// VL - 105 IS - 5 M3 - Article SP - N.PAG PB - American Institute of Physics SN - 00218979 AB - The energy release dynamics of explosives are of ongoing interest, but the short timescales involved often limit the measurements that can be made during these processes. We have used atomic emission spectroscopy to measure the temperature of fireballs resulting from detonation of charges of Hexahydro-1,3,5-trinitro-1,3,5-triazine doped with barium nitrate. The time-averaged emission spectra indicate an apparent temperature of ∼3000 K, in good agreement with theoretical predictions. The technique demonstrated herein should be applicable to time-resolved studies, including those on detonation timescales. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATOMIC emission spectroscopy KW - TEMPERATURE measurements KW - EXPLOSIVES KW - BARIUM KW - NITRATES KW - TECHNICAL chemistry N1 - Accession Number: 36941154; Lewis, W. K. 1 Rumchik, C. G. 2; Affiliation: 1: Sensors Technology Office, University of Dayton Research Institute, Dayton, Ohio 45469, 2: U.S. Air Force Research Laboratory, Eglin AFB, Florida 32542,; Source Info: Mar2009, Vol. 105 Issue 5, pN.PAG; Subject Term: ATOMIC emission spectroscopy; Subject Term: TEMPERATURE measurements; Subject Term: EXPLOSIVES; Subject Term: BARIUM; Subject Term: NITRATES; Subject Term: TECHNICAL chemistry; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 3p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.3089251 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36941154&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rasdorf, William AU - Hummer, Joseph E. AU - Harris, Elizabeth A. AU - Sitzabee, William E. T1 - IT Issues for the Management of High-Quantity, Low-Cost Assets. JO - Journal of Computing in Civil Engineering JF - Journal of Computing in Civil Engineering Y1 - 2009/03//Mar/Apr2009 VL - 23 IS - 2 M3 - Article SP - 91 EP - 99 PB - American Society of Civil Engineers SN - 08873801 AB - Transportation infrastructure asset management efforts have historically focused on collecting data on assets with high capital costs, such as bridges and pavements. Road signs and pavement markings, on the other hand, are high quantity, low capital cost assets but are also critical elements of the transportation infrastructure. These high quantity assets serve a critical function, safety, and thus they are receiving attention. Mandated by law, the Federal Highway Administration has been working to establish minimum retroreflectivity standards for signs and pavement markings. This paper seeks to address the information technology (IT) problems that emerge when developing an overall asset management system for high-quantity, low-cost assets. These IT problems include asset identification, asset location, data availability, data fragmentation, and automated data collection. A discussion of the issues related to these problems is presented to promote awareness of the myriad problems that do exist and to facilitate the development of more comprehensive systems to manage the automation of infrastructure asset management systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Computing in Civil Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSPORTATION -- Planning KW - TRANSPORTATION engineering KW - COST analysis KW - TRAFFIC signs & signals KW - PAVEMENTS KW - UNITED States KW - Assets KW - Data collection KW - Information management KW - Information technology (IT) KW - Infrastructure KW - UNITED States. Federal Highway Administration N1 - Accession Number: 36505662; Rasdorf, William 1; Email Address: rasdorf@eos.ncsu.edu Hummer, Joseph E. 1; Email Address: hummer@eos.ncsu.edu Harris, Elizabeth A. 2; Email Address: lizharris@ncsu.edu Sitzabee, William E. 3; Email Address: wsitzabee@nc.rr.com; Affiliation: 1: Professor, Dept. of Civil, Construction, and Environmental Engineering, North Carolina State Univ., Raleigh, NC 27695-7908 2: Ph.D. Candidate, Dept. of Civil, Construction, and Environmental Engineering, North Carolina State Univ., Raleigh, NC 27695-7908 3: Lieutenant Colonel, United States Air Force, Dept. of Civil, Construction, and Environmental Engineering, North Carolina State Univ., Raleigh, NC 27695-7908; Source Info: Mar/Apr2009, Vol. 23 Issue 2, p91; Subject Term: TRANSPORTATION -- Planning; Subject Term: TRANSPORTATION engineering; Subject Term: COST analysis; Subject Term: TRAFFIC signs & signals; Subject Term: PAVEMENTS; Subject Term: UNITED States; Author-Supplied Keyword: Assets; Author-Supplied Keyword: Data collection; Author-Supplied Keyword: Information management; Author-Supplied Keyword: Information technology (IT); Author-Supplied Keyword: Infrastructure; Company/Entity: UNITED States. Federal Highway Administration; NAICS/Industry Codes: 238990 All Other Specialty Trade Contractors; NAICS/Industry Codes: 237310 Highway, Street, and Bridge Construction; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; NAICS/Industry Codes: 561990 All Other Support Services; Number of Pages: 9p; Illustrations: 3 Color Photographs, 1 Diagram; Document Type: Article L3 - 10.1061/(ASCE)0887-3801(2009)23:2(91) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36505662&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carson, Katherine Silz AU - Chilton, Susan M. AU - Hutchinson, W. George T1 - Necessary conditions for demand revelation in double referenda JO - Journal of Environmental Economics & Management JF - Journal of Environmental Economics & Management Y1 - 2009/03// VL - 57 IS - 2 M3 - Article SP - 219 EP - 225 SN - 00950696 AB - Abstract: This paper demonstrates a set of necessary conditions that should generate unbiased, internally consistent estimates of willingness to pay (WTP) from a double referendum mechanism. These conditions are also sufficient for demand revelation in an experimental laboratory environment. However, the control over the mechanism achieved in the lab may not be transferrable to the field and WTP estimates derived from field surveys may remain biased. [Copyright &y& Elsevier] AB - Copyright of Journal of Environmental Economics & Management is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WILLINGNESS to pay KW - CONSUMER behavior KW - ENVIRONMENTAL policy KW - BAYESIAN analysis KW - Consequential double referendum KW - Contingent valuation KW - Demand revelation N1 - Accession Number: 36681681; Carson, Katherine Silz 1; Email Address: kate.carson@usafa.edu Chilton, Susan M. 2 Hutchinson, W. George 3; Affiliation: 1: Department of Economics and Geosciences, United States Air Force Academy, 2354 Fairchild Drive, Suite 6K110, USAF Academy, CO 80840-6299, USA 2: Business School—Economics, Newcastle University, Ridley Building, Queen Victoria Road, Newcastle upon Tyne UI NE1 7RU, UK 3: Gibson Institute for Land, Food, and the Environment, Queen's University, Stranmillis Road, Belfast BT9 5AG, UK; Source Info: Mar2009, Vol. 57 Issue 2, p219; Subject Term: WILLINGNESS to pay; Subject Term: CONSUMER behavior; Subject Term: ENVIRONMENTAL policy; Subject Term: BAYESIAN analysis; Author-Supplied Keyword: Consequential double referendum; Author-Supplied Keyword: Contingent valuation; Author-Supplied Keyword: Demand revelation; NAICS/Industry Codes: 912910 Other provincial and territorial public administration; NAICS/Industry Codes: 924110 Administration of Air and Water Resource and Solid Waste Management Programs; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jeem.2008.07.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36681681&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Moradi, Lee G. AU - Davidson, James S. AU - Dinan, Robert J. T1 - Response of Bonded Membrane Retrofit Concrete Masonry Walls to Dynamic Pressure. JO - Journal of Performance of Constructed Facilities JF - Journal of Performance of Constructed Facilities Y1 - 2009/03//Mar/Apr2009 VL - 23 IS - 2 M3 - Article SP - 72 EP - 80 PB - American Society of Civil Engineers SN - 08873828 AB - This paper describes the development of analytical models used to predict the response of bonded membrane retrofit concrete masonry walls subjected to out-of-plane impulse pressure loads. Full scale tests have shown significant improvement in the resistance of unreinforced concrete masonry walls retrofitted by membrane materials. The majority of the membrane retrofit concrete masonry walls survived compared to their unretrofitted counterparts that collapsed. Polymer membrane retrofit materials may be sprayed on, trowled on, or attached with adhesives to the tension face of the wall. Other membrane materials such as thin steel or aluminum sheets may be attached to the tension face of the wall using expansion screws or other structurally sound methods. Resistance functions previously presented by the writers for membrane retrofit concrete masonry walls are used in the development of the response. Single-degree-of-freedom equations are developed to predict the response of these walls to impulse pressure and the results of the analysis are compared with available full-scale tests. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Performance of Constructed Facilities is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONCRETE masonry KW - POLYMERS KW - ALUMINUM sheets KW - SINGLE-degree-of-freedom systems KW - EQUATIONS KW - CONCRETE construction KW - Concrete KW - Dynamic pressure KW - Masonry KW - Membranes KW - Polymers KW - Rehabilitation KW - Walls N1 - Accession Number: 36943752; Moradi, Lee G. 1; Email Address: moradi@uab.edu Davidson, James S. 2 Dinan, Robert J. 3; Affiliation: 1: Director of Engineering, Center for Biophysical Sciences and Engineering, Univ. of Alabama at Birmingham, CBSE 100, 1530 Third Ave. S., Birmingham, AL 35294 2: Associate Professor, Dept. of Civil Engineering, Auburn Univ., Auburn, AL 36849. 3: Senior Research Engineer, Air Force Research Laboratory, 139 Barnes Dr., Ste. 2, Tyndall AFB, FL 32403; Source Info: Mar/Apr2009, Vol. 23 Issue 2, p72; Subject Term: CONCRETE masonry; Subject Term: POLYMERS; Subject Term: ALUMINUM sheets; Subject Term: SINGLE-degree-of-freedom systems; Subject Term: EQUATIONS; Subject Term: CONCRETE construction; Author-Supplied Keyword: Concrete; Author-Supplied Keyword: Dynamic pressure; Author-Supplied Keyword: Masonry; Author-Supplied Keyword: Membranes; Author-Supplied Keyword: Polymers; Author-Supplied Keyword: Rehabilitation; Author-Supplied Keyword: Walls; NAICS/Industry Codes: 238110 Poured Concrete Foundation and Structure Contractors; NAICS/Industry Codes: 238990 All Other Specialty Trade Contractors; NAICS/Industry Codes: 238140 Masonry Contractors; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331315 Aluminum Sheet, Plate, and Foil Manufacturing; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; Number of Pages: 9p; Illustrations: 3 Color Photographs, 4 Diagrams, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1061/(ASCE)0887-3828(2009)23:2(72) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36943752&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Berger, Karen T. AU - Greene, Frank A. AU - Kimmel, Roger AU - Alba, Christopher AU - Johnson, Heath T1 - Aerothermodynamic Testing and Boundary-Layer Trip Sizing of the HIFiRE Flight 1 Vehicle. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2009/03//Mar/Apr2009 VL - 46 IS - 2 M3 - Correction notice SP - 473 EP - 480 SN - 00224650 AB - A correction to the article "Aerothermodynamic Testing and Boundary-Layer Trip Sizing of the HIFiRE Flight 1 Vehicle" is presented. KW - AEROTHERMODYNAMICS N1 - Accession Number: 38998452; Berger, Karen T. 1 Greene, Frank A. 1 Kimmel, Roger 2 Alba, Christopher 3 Johnson, Heath 3; Affiliation: 1: NASA Langley Research Center, Hampton, Virginia 23681 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 3: University of Minnesota, Minneapolis, Minnesota 55455; Source Info: Mar/Apr2009, Vol. 46 Issue 2, p473; Subject Term: AEROTHERMODYNAMICS; Number of Pages: 8p; Illustrations: 5 Black and White Photographs, 1 Diagram, 2 Charts, 12 Graphs; Document Type: Correction notice L3 - 10.2514/1.43927 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38998452&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - KOZMA, ROBERT AU - PULJIC, MARKO AU - PERLOVSKY, LEONID T1 - MODELING GOAL-ORIENTED DECISION MAKING THROUGH COGNITIVE PHASE TRANSITIONS. JO - New Mathematics & Natural Computation JF - New Mathematics & Natural Computation Y1 - 2009/03// VL - 5 IS - 1 M3 - Article SP - 143 EP - 157 SN - 17930057 AB - Cognitive experiments indicate the presence of discontinuities in brain dynamics during high-level cognitive processing. Non-linear dynamic theory of brains pioneered by Freeman explains the experimental findings through the theory of metastability and edge-of-criticality in cognitive systems, which are key properties associated with robust operation and fast and reliable decision making. Recently, neuropercolation has been proposed to model such critical behavior. Neuropercolation is a family of probabilistic models based on the mathematical theory of bootstrap percolations on lattices and random graphs and motivated by structural and dynamical properties of neural populations in the cortex. Neuropercolation exhibits phase transitions and it provides a novel mathematical tool for studying spatio-temporal dynamics of multi-stable systems. The present work reviews the theory of cognitive phase transitions based on neuropercolation models and outlines the implications to decision making in brains and in artificial designs. [ABSTRACT FROM AUTHOR] AB - Copyright of New Mathematics & Natural Computation is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COGNITION KW - BRAIN KW - DECISION making KW - PROBABILITY theory KW - MATHEMATICAL models KW - decision theory KW - metastability KW - Neurodynamics KW - neuropercolation KW - phase transition N1 - Accession Number: 36522863; KOZMA, ROBERT 1; Email Address: neuropercolation@yahoo.com PULJIC, MARKO 1 PERLOVSKY, LEONID 2; Affiliation: 1: Computational NeuroDynamics Laboratory, FedEx Institute of Technology, 373 Dunn Hall, University of Memphis, Memphis, TN 38152, USA 2: US Air Force Research Laboratory, Sensors Directorate, 80 Scott Drive, Hanscom AFB, MA 01731, USA; Source Info: Mar2009, Vol. 5 Issue 1, p143; Subject Term: COGNITION; Subject Term: BRAIN; Subject Term: DECISION making; Subject Term: PROBABILITY theory; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: decision theory; Author-Supplied Keyword: metastability; Author-Supplied Keyword: Neurodynamics; Author-Supplied Keyword: neuropercolation; Author-Supplied Keyword: phase transition; Number of Pages: 15p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36522863&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Knopp, Jeremy S. AU - Aldrin, John C. AU - Jata, Kumar V. T1 - Computational methods in eddy current crack detection at fastener sites in multi-layer structures. JO - Nondestructive Testing & Evaluation JF - Nondestructive Testing & Evaluation Y1 - 2009/03//Mar-Jun2009 VL - 24 IS - 1/2 M3 - Article SP - 103 EP - 120 PB - Taylor & Francis Ltd SN - 10589759 AB - Reliable detection of both surface and subsurface cracks around fastener sites continues to be a need for maintaining ageing aircraft structures. In this work, a comprehensive overview of both experimental and modelling work addressing eddy current crack detection around fastener holes in multi-layer structures is presented. This overview consists of a strategy for the application of computational methods along with case studies that demonstrate the role of modelling for this particular class of problems. The state-of-the-art on eddy current modelling applicable to low-frequency eddy current problems is reviewed. The role of modelling in feature extraction algorithm development, crack characterisation, and probability of detection evaluation is highlighted. [ABSTRACT FROM AUTHOR] AB - Copyright of Nondestructive Testing & Evaluation is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY current testing KW - AIRPLANES -- Inspection KW - FRACTURE mechanics KW - DEFORMATIONS (Mechanics) KW - EXTRACTION techniques KW - NONDESTRUCTIVE testing KW - cracks KW - eddy current KW - feature extraction KW - modelling KW - parameter estimation N1 - Accession Number: 35818141; Knopp, Jeremy S. 1; Email Address: Jeremy.knopp@wpafb.af.mil Aldrin, John C. 2 Jata, Kumar V. 1; Affiliation: 1: Metals, Ceramics, and NDE Division, Air Force Research Laboratory (AFRL/RXLP), Wright-Patterson AFB, Dayton, OH 45433, USA 2: bComputational Tools, Gurnee, IL 60031, USA; Source Info: Mar-Jun2009, Vol. 24 Issue 1/2, p103; Subject Term: EDDY current testing; Subject Term: AIRPLANES -- Inspection; Subject Term: FRACTURE mechanics; Subject Term: DEFORMATIONS (Mechanics); Subject Term: EXTRACTION techniques; Subject Term: NONDESTRUCTIVE testing; Author-Supplied Keyword: cracks; Author-Supplied Keyword: eddy current; Author-Supplied Keyword: feature extraction; Author-Supplied Keyword: modelling; Author-Supplied Keyword: parameter estimation; NAICS/Industry Codes: 488190 Other Support Activities for Air Transportation; NAICS/Industry Codes: 926120 Regulation and Administration of Transportation Programs; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 18p; Illustrations: 1 Black and White Photograph, 3 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1080/10589750802195519 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35818141&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abu-Nabah, Bassam A. AU - Feng Yu AU - Hassan, Waled T. AU - Blodgett, Mark P. AU - Nagy, Peter B. T1 - Eddy current residual stress profiling in surface-treated engine alloys. JO - Nondestructive Testing & Evaluation JF - Nondestructive Testing & Evaluation Y1 - 2009/03//Mar-Jun2009 VL - 24 IS - 1/2 M3 - Article SP - 209 EP - 232 PB - Taylor & Francis Ltd SN - 10589759 AB - Recent research results indicate that eddy current conductivity measurements can be exploited for nondestructive evaluation of subsurface residual stresses in surface-treated nickel-base superalloy components. According to this approach, the depth-dependent electric conductivity profile is calculated from the measured frequency-dependent apparent eddy current conductivity spectrum. Then, the residual stress depth profile is calculated from the conductivity profile based on the piezoresistivity coefficient of the material, which is determined separately from calibration measurements using the known external applied stresses. This paper reviews the basic principles, measurement procedures, advantages, and limitations of eddy current residual stress profiling. [ABSTRACT FROM AUTHOR] AB - Copyright of Nondestructive Testing & Evaluation is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY current testing KW - ALLOYS -- Fatigue KW - RESIDUAL stresses KW - STRESS corrosion cracking KW - SURFACES (Technology) -- Defects KW - NONDESTRUCTIVE testing KW - eddy current KW - residual stress profiling KW - spectroscopy KW - surface-treatment N1 - Accession Number: 35818135; Abu-Nabah, Bassam A. 1 Feng Yu 1 Hassan, Waled T. 2 Blodgett, Mark P. 3 Nagy, Peter B. 1; Email Address: peter.nagy@uc.edu; Affiliation: 1: Department of Aerospace Engineering, University of Cincinnati, Cincinnati, OH 45221, USA 2: Honeywell Aerospace, Phoenix, AZ 85034, USA 3: Air Force Research Laboratory, WPAFB, Dayton, OH 45433, USA; Source Info: Mar-Jun2009, Vol. 24 Issue 1/2, p209; Subject Term: EDDY current testing; Subject Term: ALLOYS -- Fatigue; Subject Term: RESIDUAL stresses; Subject Term: STRESS corrosion cracking; Subject Term: SURFACES (Technology) -- Defects; Subject Term: NONDESTRUCTIVE testing; Author-Supplied Keyword: eddy current; Author-Supplied Keyword: residual stress profiling; Author-Supplied Keyword: spectroscopy; Author-Supplied Keyword: surface-treatment; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 24p; Illustrations: 1 Black and White Photograph, 1 Diagram, 13 Graphs; Document Type: Article L3 - 10.1080/10589750802245280 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35818135&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Thomas M. AU - Friedman, Jeffrey F. AU - Williamson, John S. AU - Schaffer, Linda C. AU - Viggiano, A. A. T1 - A new instrument for thermal electron attachment at high temperature: NF3 and CH3Cl attachment rate constants up to 1100 K. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2009/03// VL - 80 IS - 3 M3 - Article SP - 034104 EP - 034113 PB - American Institute of Physics SN - 00346748 AB - A new high temperature flowing afterglow Langmuir probe (HT-FALP) apparatus is described. A movable Langmuir probe and a four-needle reactant gas inlet were fitted to an existing high temperature flowing afterglow apparatus. The instrument is suitable for study of electron attachment from 300–1200 K, the upper limit set to avoid softening of the quartz flow tube. We present results for two reactions over extended ranges: NF3 (300–900 K) and CH3Cl (600–1100 K). Electron attachment rate constants for NF3 had been measured earlier using our conventional FALP apparatus. Those measurements were repeated with the FALP and then extended to 900 K with the HT-FALP. CH3Cl attaches electrons too weakly to study with the low temperature FALP but reaches a value of ∼10-9 cm3 s-1 at 1100 K. F- is produced in NF3 attachment at all temperatures and Cl- in CH3Cl attachment, as determined by a quadrupole mass spectrometer at the end of the flow tube. Future modifications to increase the plasma density should allow study of electron-ion recombination at high temperatures. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL electrons KW - LANGMUIR probes KW - MASS spectrometers KW - PLASMA density KW - ION recombination KW - SCIENTIFIC apparatus & instruments N1 - Accession Number: 37259491; Miller, Thomas M. 1 Friedman, Jeffrey F. 1 Williamson, John S. 1 Schaffer, Linda C. 2 Viggiano, A. A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom Air Force Base, Massachusetts 01731-3010, 2: College of Education, University of New Mexico, Albuquerque, New Mexico 87131,; Source Info: Mar2009, Vol. 80 Issue 3, p034104; Subject Term: THERMAL electrons; Subject Term: LANGMUIR probes; Subject Term: MASS spectrometers; Subject Term: PLASMA density; Subject Term: ION recombination; Subject Term: SCIENTIFIC apparatus & instruments; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; NAICS/Industry Codes: 417930 Professional machinery, equipment and supplies merchant wholesalers; Number of Pages: 10p; Illustrations: 2 Diagrams, 3 Charts, 6 Graphs; Document Type: Article L3 - 10.1063/1.3097185 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37259491&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - David McGlasson T1 - Whole Blood Platelet Aggregometry and Platelet Function Testing. JO - Seminars in Thrombosis & Hemostasis JF - Seminars in Thrombosis & Hemostasis Y1 - 2009/03// VL - 35 IS - 2 M3 - Article SP - 168 EP - 180 SN - 00946176 AB - Platelet aggregometry has been the reference method employed to detect, diagnose, and monitor qualitative platelet disorders since the early 1960s. Lumiaggregometry and impedance-based whole blood lumiaggregometry have advantages over light transmittance aggregometry in that they provide for enhanced specimen management and increase the test sensitivity to impairment of platelet granule secretion. Whole blood lumiaggregometry detects and identifies congenital and acquired platelet plasma membrane receptor defects, metabolic pathway secretion disorders, and storage pool deficiency. Whole blood lumiaggregometry is also being applied to antiplatelet therapy monitoring and identifies aspirin and thienopyridine resistance. There is growing interest in using impedance-based whole blood lumiaggregometry for near-patient whole blood platelet analysis and antiplatelet therapy monitoring. This article will also discuss other whole blood testing processes for assessing platelet function, particularly as applied to assessing the effect of antiplatelet medication. [ABSTRACT FROM AUTHOR] AB - Copyright of Seminars in Thrombosis & Hemostasis is the property of Thieme Medical Publishing Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BLOOD KW - POULTRY industry -- By-products KW - ANEMIA KW - HEMATOLOGY N1 - Accession Number: 38610271; David McGlasson 1; Affiliation: 1: Wilford Hall Medical Center, United States Air Force Lackland AFB, Texas; Source Info: Mar2009, Vol. 35 Issue 2, p168; Subject Term: BLOOD; Subject Term: POULTRY industry -- By-products; Subject Term: ANEMIA; Subject Term: HEMATOLOGY; NAICS/Industry Codes: 325414 Biological Product (except Diagnostic) Manufacturing; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38610271&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ficarrotta, J. Carl T1 - How to Teach a Bad Ethics Course. JO - Teaching Philosophy JF - Teaching Philosophy Y1 - 2009/03// VL - 32 IS - 1 M3 - Article SP - 53 EP - 68 SN - 01455788 AB - Moral experience may be parsed at different levels of abstraction. We might work variously at the level of meta-ethical reflection; normative ethics; the principles, doctrines, and character traits of everyday morality; or the sometimes simple, sometimes messy, business of actual moral judgment. We should strive to be clear with our students (and ourselves) about the differences between these levels and the hazards of crudely conflating them. [ABSTRACT FROM AUTHOR] AB - Copyright of Teaching Philosophy is the property of Philosophy Documentation Center and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSTRACT thought KW - ETHICS KW - EDUCATION KW - HAZARDS KW - CHARACTERS & characteristics N1 - Accession Number: 38510030; Ficarrotta, J. Carl 1; Affiliation: 1: United States Air Force Academy; Source Info: Mar2009, Vol. 32 Issue 1, p53; Subject Term: ABSTRACT thought; Subject Term: ETHICS; Subject Term: EDUCATION; Subject Term: HAZARDS; Subject Term: CHARACTERS & characteristics; NAICS/Industry Codes: 611710 Educational Support Services; NAICS/Industry Codes: 923110 Administration of Education Programs; NAICS/Industry Codes: 611699 All Other Miscellaneous Schools and Instruction; Number of Pages: 16p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=38510030&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abel, Corey T1 - OAKESHOTTIAN MODES AT THE CROSSROADS OF THE EVOLUTION DEBATES. JO - Zygon: Journal of Religion & Science JF - Zygon: Journal of Religion & Science Y1 - 2009/03// VL - 44 IS - 1 M3 - Article SP - 197 EP - 222 PB - Wiley-Blackwell SN - 05912385 AB - I examine Michael Oakeshott's theory of modes of experience in light of today's evolution debates and argue that in much of our current debate science and religion irrelevantly attack each other or, less commonly but still irrelevantly, seek out support from the other. An analysis of Oakeshott's idea of religion finds links between his early holistic theory of the state, his individualistic account of religious sensibility, and his theory of political, moral, and religious authority. Such analysis shows that a modern individualistic theory of the state need not be barrenly secular and suggests that a religious sensibility need not be translated into an overmastering desire to use state power to pursue moral or spiritual ends in politics. Finally, Oakeshott's vision of a civil conversation, as both a metaphor for Western civilization and as a quasi-ethical ideal, shows us how we might balance the recognition of diverse modal truths, the pursuit of singular religious or philosophic truth, and a free political order. [ABSTRACT FROM AUTHOR] AB - Copyright of Zygon: Journal of Religion & Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EVOLUTIONARY theories KW - EXPERIENCE KW - RELIGION & science KW - EVOLUTIONARY theories -- Religious aspects KW - RELIGION & politics KW - INTELLIGENT design (Teleology) KW - NATURAL theology KW - apology KW - Augustine KW - authority KW - Christianity KW - civil association KW - conversation KW - evolution KW - Francis Collins KW - history KW - Michael Oakeshott KW - mode KW - nonoverlapping magisteria KW - practical experience KW - religion KW - Richard Dawkins KW - science KW - Stephen Jay Gould KW - theism KW - OAKESHOTT, Michael, 1901-1990 N1 - Accession Number: 36590421; Abel, Corey 1; Affiliation: 1: Independent scholar who has taught at The University of Colorado, The Colorado College, and The United States Air Force Academy. His mailing address is 2530 Eudora Street, Denver, CO, 80207; e-mail .; Source Info: Mar2009, Vol. 44 Issue 1, p197; Subject Term: EVOLUTIONARY theories; Subject Term: EXPERIENCE; Subject Term: RELIGION & science; Subject Term: EVOLUTIONARY theories -- Religious aspects; Subject Term: RELIGION & politics; Subject Term: INTELLIGENT design (Teleology); Subject Term: NATURAL theology; Author-Supplied Keyword: apology; Author-Supplied Keyword: Augustine; Author-Supplied Keyword: authority; Author-Supplied Keyword: Christianity; Author-Supplied Keyword: civil association; Author-Supplied Keyword: conversation; Author-Supplied Keyword: evolution; Author-Supplied Keyword: Francis Collins; Author-Supplied Keyword: history; Author-Supplied Keyword: Michael Oakeshott; Author-Supplied Keyword: mode; Author-Supplied Keyword: nonoverlapping magisteria; Author-Supplied Keyword: practical experience; Author-Supplied Keyword: religion; Author-Supplied Keyword: Richard Dawkins; Author-Supplied Keyword: science; Author-Supplied Keyword: Stephen Jay Gould; Author-Supplied Keyword: theism; People: OAKESHOTT, Michael, 1901-1990; Number of Pages: 26p; Document Type: Article L3 - 10.1111/j.1467-9744.2009.00994.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36590421&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aouadi, S.M. AU - Paudel, Y. AU - Simonson, W.J. AU - Ge, Q. AU - Kohli, P. AU - Muratore, C. AU - Voevodin, A.A. T1 - Tribological investigation of adaptive Mo2N/MoS2/Ag coatings with high sulfur content JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2009/02/25/ VL - 203 IS - 10/11 M3 - Article SP - 1304 EP - 1309 SN - 02578972 AB - Abstract: Adaptive nanocomposite Mo2N/MoS2/Ag coatings were deposited on Inconel and silicon substrates by magnetron sputtering with individual targets of Mo, MoS2 and Ag. The tetragonal β-Mo2N structure in addition to Ag and MoS2 phases were detected using X-ray diffraction. The elemental composition of the coatings was investigated using Auger electron spectroscopy. The tribological properties of the coatings were studied at room temperature (RT), 350, and 600 °C against Si3N4 balls. The lowest friction coefficients that were obtained were 0.4, 0.3, and 0.1 at RT, 350 °C, and 600 °C, respectively. The average friction coefficient was maintained at 0.1 for more than 300,000 cycles at 600 °C due to the formation of lubricious silver molybdate phases at the contact surfaces. Three types of silver molybdate phases were detected by both X-ray diffraction and micro-Raman spectroscopy in the wear tracks, namely, Ag2Mo4O13, Ag2Mo2O7 and Ag2MoO4 depending on the Mo and Ag contents in the coatings. The superior performance of all three compounds is due to their layered structure with weaker Ag–O bridging bonds. These relatively weak bonds may shear or even break easily at high temperatures to account for the observed friction reduction. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE coatings KW - NANOSTRUCTURED materials KW - INCONEL KW - SPUTTERING (Physics) KW - X-ray diffraction KW - RAMAN spectroscopy KW - COMPOSITE materials KW - Friction KW - Nanocomposites KW - Solid lubricants KW - Sputtering N1 - Accession Number: 36189052; Aouadi, S.M. 1; Email Address: saouadi@physics.siu.edu Paudel, Y. 1 Simonson, W.J. 1 Ge, Q. 2 Kohli, P. 2 Muratore, C. 3 Voevodin, A.A. 3; Affiliation: 1: Department of Physics, Southern Illinois University, Carbondale, IL 62901, USA 2: Department of Chemistry and Biochemistry, Southern Illinois University, Carbondale, IL 62901, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Feb2009, Vol. 203 Issue 10/11, p1304; Subject Term: SURFACE coatings; Subject Term: NANOSTRUCTURED materials; Subject Term: INCONEL; Subject Term: SPUTTERING (Physics); Subject Term: X-ray diffraction; Subject Term: RAMAN spectroscopy; Subject Term: COMPOSITE materials; Author-Supplied Keyword: Friction; Author-Supplied Keyword: Nanocomposites; Author-Supplied Keyword: Solid lubricants; Author-Supplied Keyword: Sputtering; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.surfcoat.2008.10.040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36189052&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Karmarkar, Makarand AU - Singh, Gurpreet AU - Shah, Sandeep AU - Mahajan, Roop L. AU - Priya, Shashank T1 - Large piezoresistivity phenomenon in SiCN–(La,Sr)MnO3 composites. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2009/02/16/ VL - 94 IS - 7 M3 - Article SP - N.PAG PB - American Institute of Physics SN - 00036951 AB - We present the results on SiCN–(La,Sr)MnO3 (LSMO) composites correlating the observed large piezoresistance behavior with the microstructural features and defect chemistry. Scanning electron microscopy characterization revealed the presence of self-assembled periodic microvalleys in the microstructure with width of 1–5 μm and depth of 600–1000 nm. The microvalleys act as stress concentration points providing change in volume with applied stress. High resolution transmission electron microscopy measurements conducted on composites showed that LSMO grains consist of SiCN phase but no inclusions were observed. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC ceramics KW - PIEZOELECTRICITY KW - MAGNETORESISTANCE KW - MICROSTRUCTURE KW - PARTICLES (Nuclear physics) KW - TRANSMISSION electron microscopy N1 - Accession Number: 36797985; Karmarkar, Makarand 1 Singh, Gurpreet 2 Shah, Sandeep 3 Mahajan, Roop L. 2,4 Priya, Shashank 1,4; Email Address: spriya@vt.edu; Affiliation: 1: Center for Energy Harvesting Materials and Systems (CEHMS), Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA 2: Institute for Critical Technology and Applied Science (ICTAS), Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA 3: Center for Aircraft Structural Life Extension, HQ USAFA/DFEM, United States Air Force Academy, Colorado 80840, USA 4: Department of Engineering Science and Mechanics, Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA; Source Info: 2/16/2009, Vol. 94 Issue 7, pN.PAG; Subject Term: ELECTRONIC ceramics; Subject Term: PIEZOELECTRICITY; Subject Term: MAGNETORESISTANCE; Subject Term: MICROSTRUCTURE; Subject Term: PARTICLES (Nuclear physics); Subject Term: TRANSMISSION electron microscopy; Number of Pages: 3p; Illustrations: 1 Color Photograph, 4 Black and White Photographs, 1 Graph; Document Type: Article L3 - 10.1063/1.3078271 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36797985&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Khurgin, J. B. AU - Sun, G. AU - Soref, R. A. T1 - Practical limits of absorption enhancement near metal nanoparticles. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2009/02/16/ VL - 94 IS - 7 M3 - Article SP - N.PAG PB - American Institute of Physics SN - 00036951 AB - We consider the enhanced absorption of optical radiation by molecules placed in the vicinity of spherical metal nanoparticles in the realistic situation that includes perturbation of the optical field by the absorbing molecules. We show that there is an optimal nanosphere radius that gives the strongest enhancement for each combination of the number of absorbing molecules, their absorption strength, and their distance from the nanosphere surface and that the enhancement is strong only for relatively weak and diluted absorbers. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - MOLECULES KW - PERTURBATION (Mathematics) KW - OPTICAL radiometry KW - ABSORPTION KW - METALS N1 - Accession Number: 36797997; Khurgin, J. B. 1 Sun, G. 2; Email Address: greg.sun@umb.edu Soref, R. A. 3; Affiliation: 1: Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA 2: Department of Physics, University of Massachusetts Boston, Boston, Massachusetts 02125, USA 3: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731, USA; Source Info: 2/16/2009, Vol. 94 Issue 7, pN.PAG; Subject Term: NANOPARTICLES; Subject Term: MOLECULES; Subject Term: PERTURBATION (Mathematics); Subject Term: OPTICAL radiometry; Subject Term: ABSORPTION; Subject Term: METALS; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.3081631 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36797997&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tae-Sik Kang AU - Adam P. Smith AU - Barney E. Taylor AU - Michael F. Durstock T1 - Fabrication of Highly-Ordered TiO2Nanotube Arrays and Their Use in Dye-Sensitized Solar Cells. JO - Nano Letters JF - Nano Letters Y1 - 2009/02/11/ VL - 9 IS - 2 M3 - Article SP - 601 EP - 606 SN - 15306984 AB - Highly ordered TiO2nanotubes were successfully fabricated using a nanoporous alumina templating method. A modified sol−gel route was used to infiltrate the alumina pores with Ti(OC3H7)4which was subsequently converted into TiO2nanotubes. The average external diameter, tube lengths, and wall thickness achieved were 295 nm, 6−15 μm, and 21−42 nm, respectively. Diffraction data reveals that the nanotubes consist solely of the anatase phase. Dye-sensitized solar cells using TiO2nanotube arrays as the working electrode yielded power conversion efficiencies as high as 3.5% with a maximum incident photon-to-current conversion efficiency of 20% at 520 nm. [ABSTRACT FROM AUTHOR] AB - Copyright of Nano Letters is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOTUBES KW - MICROFABRICATION KW - TITANIUM dioxide KW - DYE-sensitized solar cells KW - ALUMINUM oxide KW - GELATION KW - CHEMICAL templates N1 - Accession Number: 36474177; Tae-Sik Kang 1 Adam P. Smith 1 Barney E. Taylor 1 Michael F. Durstock 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio, and Universal Technology Corporation, Beavercreek, Ohio; Source Info: Feb2009, Vol. 9 Issue 2, p601; Subject Term: NANOTUBES; Subject Term: MICROFABRICATION; Subject Term: TITANIUM dioxide; Subject Term: DYE-sensitized solar cells; Subject Term: ALUMINUM oxide; Subject Term: GELATION; Subject Term: CHEMICAL templates; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36474177&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kuanping Gong AU - Feng Du AU - Zhenhai Xia AU - Durstock, Michael AU - Liming Dai T1 - Nitrogen-Doped Carbon Nanotube Arrays with High Electrocatalytic Activity for Oxygen Reduction. JO - Science JF - Science Y1 - 2009/02/06/ VL - 323 IS - 5915 M3 - Article SP - 760 EP - 764 SN - 00368075 AB - The large-scale practical application of fuel cells will be difficult to realize if the expensive platinum-based electrocatatysts for oxygen reduction reactions (ORRs) cannot be replaced by other efficient, low-cost, and stable electrodes. Here, we report that vertically aligned nitrogen-containing carbon nanotubes (VA-NCNTs) can act as a metal-free electrode with a much better electrocatalytic activity, long-term operation stability, and tolerance to crossover effect than platinum for oxygen redaction in alkaline fuel cells. In air-saturated 0.1 motor potassium hydroxide, we observed a steady-state output potential of-80 miilivolts and a current density of 4.1 mitliamps per square centimeter at-0.22 volts, compared with -85 millivolts and 1.1 milliamps per square centimeter at -0.20 volts for a platinum-carbon electrode. The incorporation of electron-accepting nitrogen atoms in the conjugated nanotube carbon plane appears to impart a relatively high positive charge density on adjacent carbon atoms. This effect, coupled with aligning the NCNTs, provides a four-electron pathway for the ORR on VA-NCNTs with a superb performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - NITROGEN KW - RESEARCH KW - ELECTROCATALYSIS KW - FUEL cells KW - OXIDATION-reduction reaction KW - ELECTRODES KW - POTASSIUM hydroxide N1 - Accession Number: 36624279; Kuanping Gong 1 Feng Du 1 Zhenhai Xia 2 Durstock, Michael 3 Liming Dai 1,4; Email Address: ldai@udayton.edu; Affiliation: 1: Department of Chemical and Materials Engineering, University of Dayton, 300 College Park, Dayton, OH 45469, USA 2: Department of Mechanical Engineering, University of Akron, Akron, OH 44325, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, RXBP, Wright-Patterson Air Force Base, OH 45433, USA 4: Department of Chemistry and University of Dayton Research Institute and Institute for the Development and Commercialization of Advanced Sensor Technology and Wright Brothers Institute, Dayton, OH 45469, USA; Source Info: 2/6/2009, Vol. 323 Issue 5915, p760; Subject Term: CARBON nanotubes; Subject Term: NITROGEN; Subject Term: RESEARCH; Subject Term: ELECTROCATALYSIS; Subject Term: FUEL cells; Subject Term: OXIDATION-reduction reaction; Subject Term: ELECTRODES; Subject Term: POTASSIUM hydroxide; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325181 Alkali and chlorine manufacturing; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36624279&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, X. AU - Pan, E. AU - Albrecht, J.D. AU - Feng, W.J. T1 - Effective properties of multilayered functionally graded multiferroic composites JO - Composite Structures JF - Composite Structures Y1 - 2009/02// VL - 87 IS - 3 M3 - Article SP - 206 EP - 214 SN - 02638223 AB - Abstract: A micromechanics approach is employed to derive the effective properties (including the thermal properties) of a multilayered functionally graded multiferroic composite with 2–2 connectivity among the phases. Concise matrix expressions of the effective properties of the layered composite are presented. The derived formulas are then applied to find the explicit expressions of the effective properties for three practical cases: (a) a multiferroic composite composed of an orthotropic piezoelectric phase and an orthotropic magnetostrictive phase; (b) a multiferroic composite composed of an orthotropic piezoelectric phase, an orthotropic magnetostrictive phase and an orthotropic elastic substrate; (c) a multiferroic composite composed of a functionally graded orthotropic piezoelectric phase and a functionally graded orthotropic magnetostrictive phase. Our results clearly show that: (i) the magnetoelectric coupling effect for case (b) dramatically drops as the volume of the elastic substrate increases; and (ii) the magnetoelectric coupling effect for case (c) can be significantly enhanced or reduced depending on the material gradient manner for the functionally graded piezoelectric and magnetostrictive phases. [Copyright &y& Elsevier] AB - Copyright of Composite Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROMECHANICS KW - THERMAL properties KW - PIEZOELECTRICITY KW - MAGNETOSTRICTIVE transducers KW - 2–2 connectivity KW - Effective properties KW - Functionally graded material KW - Multiferroics N1 - Accession Number: 34674730; Wang, X. 1,2 Pan, E. 1,2; Email Address: pan2@uakron.edu Albrecht, J.D. 3 Feng, W.J. 1,2; Affiliation: 1: Department of Civil Engineering, University of Akron, Akron, OH 44325-3905, USA 2: Department of Applied Mathematics, University of Akron, Akron, OH 44325-3905, USA 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: Feb2009, Vol. 87 Issue 3, p206; Subject Term: MICROMECHANICS; Subject Term: THERMAL properties; Subject Term: PIEZOELECTRICITY; Subject Term: MAGNETOSTRICTIVE transducers; Author-Supplied Keyword: 2–2 connectivity; Author-Supplied Keyword: Effective properties; Author-Supplied Keyword: Functionally graded material; Author-Supplied Keyword: Multiferroics; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.compstruct.2008.01.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34674730&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hai Deng AU - Himed, Braham T1 - A Virtual Antenna Beamforming (VAB) Approach for Radar Systems by Using Orthogonal Coding Waveforms. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2009/02// VL - 57 IS - 2 M3 - Article SP - 425 EP - 435 SN - 0018926X AB - An innovative approach is introduced to form virtual transmitting and receiving radar antenna beams simultaneously by transmitting orthogonal coding waveforms from the antenna elements and digitally processing of their echoes at the receiver. Multiple virtual transmitting-receiving beams can be' formed simultaneously by employing an equal number of beamforming filters without increasing transmitting power or antenna gain or resolution loss. The virtually formed antenna beams can provide equivalent antenna gains and spatial resolutions as the conventional phased arrays of the same size. Because the actual antenna radiation pattern can be made almost isotropic, the new system has low probability of intercept (LPI) property. With both transmitting and receiving beams virtually implemented through digital filtering, costly radiation phase shift used in phased arrays is not needed for beam scanning in the proposed system. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR -- Antennas KW - RADIATION KW - ELECTRONIC systems KW - ELECTROMAGNETIC fields KW - ENGINEERING systems KW - ELECTRIC conductivity KW - DIGITAL filters (Mathematics) KW - ANTENNA arrays KW - Active antenna array KW - digital beamforming KW - orthogonal waveforms KW - phased arrays KW - virtual antenna beams N1 - Accession Number: 37313490; Hai Deng 1; Email Address: hai@unt.edu Himed, Braham 2; Affiliation: 1: Department of Electrical Engineering, The University of North Texas, Denton, TX 76203 USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA; Source Info: Feb2009, Vol. 57 Issue 2, p425; Subject Term: RADAR -- Antennas; Subject Term: RADIATION; Subject Term: ELECTRONIC systems; Subject Term: ELECTROMAGNETIC fields; Subject Term: ENGINEERING systems; Subject Term: ELECTRIC conductivity; Subject Term: DIGITAL filters (Mathematics); Subject Term: ANTENNA arrays; Author-Supplied Keyword: Active antenna array; Author-Supplied Keyword: digital beamforming; Author-Supplied Keyword: orthogonal waveforms; Author-Supplied Keyword: phased arrays; Author-Supplied Keyword: virtual antenna beams; Number of Pages: 11p; Illustrations: 2 Diagrams, 5 Graphs; Document Type: Article L3 - 10.11l09/TAP.2008.2011387 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37313490&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gadhamshetty, Venkataramana AU - Johnson, David C. AU - Nirmalakhandan, Nagamany AU - Smith, Geoff B. AU - Deng, Shuguang T1 - Feasibility of biohydrogen production at low temperatures in unbuffered reactors JO - International Journal of Hydrogen Energy JF - International Journal of Hydrogen Energy Y1 - 2009/02// VL - 34 IS - 3 M3 - Article SP - 1233 EP - 1243 SN - 03603199 AB - Abstract: Feasibility of biohydrogen production by dark fermentation at two temperatures (22°C and 37°C) in unbuffered batch reactors was evaluated using heat-treated compost as inocula and sucrose as substrate, without any initial pH adjustment or inorganic nutrient supplements. Gas production was quantified by two different pressure release methods – intermittent pressure release (IPR) and continuous pressure release (CPR). Hydrogen production (47.2mL/gCOD/L) and sucrose-to-hydrogen conversion efficiency (53%) were both found to be highest at the lower temperature and IPR conditions. Hydrogen production was higher at the lower temperature irrespective of the pressure release condition. The high yield of 4.3mol of hydrogen/mole of sucrose obtained in this study under IPR conditions at 22°C is equivalent to or better than the literature values reported for buffered reactors. Even though literature reports have implied potential inhibition of hydrogen production at high hydrogen partial pressures resulting from IPR conditions, our results did not show any negative effects at hydrogen partial pressures exceeding 5.0×104 Pa. While our findings are contrary to literature reports, they make a strong case for cost-effective hydrogen production by dark fermentation. [Copyright &y& Elsevier] AB - Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROGEN production KW - LOW temperatures KW - CHEMICAL reactors KW - FERMENTATION KW - SUCROSE KW - ENERGY conversion KW - PRESSURE KW - COST effectiveness KW - BIOMASS energy KW - Anaerobic fermentation KW - Bioenergy KW - Biohydrogen KW - Gibbs free energy KW - Intermittent pressure release KW - Temperature KW - Unbuffered N1 - Accession Number: 36337611; Gadhamshetty, Venkataramana 1; Email Address: vgadhamshetty@fairpoint.net Johnson, David C. 2 Nirmalakhandan, Nagamany 3 Smith, Geoff B. 4 Deng, Shuguang 5; Affiliation: 1: Air Force Research Laboratory, Tyndall AFB, 139 Barnes Drive, Panama City, FL 32403, USA 2: Institute for Energy and Environment, New Mexico State University, Las Cruces, NM 88003, USA 3: Civil Engineering Department, New Mexico State University, Las Cruces, NM 88003, USA 4: Biology Department, New Mexico State University, Las Cruces, NM 88003, USA 5: Chemical Engineering Department, New Mexico State University, Las Cruces, NM 88003, USA; Source Info: Feb2009, Vol. 34 Issue 3, p1233; Subject Term: HYDROGEN production; Subject Term: LOW temperatures; Subject Term: CHEMICAL reactors; Subject Term: FERMENTATION; Subject Term: SUCROSE; Subject Term: ENERGY conversion; Subject Term: PRESSURE; Subject Term: COST effectiveness; Subject Term: BIOMASS energy; Author-Supplied Keyword: Anaerobic fermentation; Author-Supplied Keyword: Bioenergy; Author-Supplied Keyword: Biohydrogen; Author-Supplied Keyword: Gibbs free energy; Author-Supplied Keyword: Intermittent pressure release; Author-Supplied Keyword: Temperature; Author-Supplied Keyword: Unbuffered; NAICS/Industry Codes: 221117 Biomass Electric Power Generation; NAICS/Industry Codes: 221119 Other electric power generation; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ijhydene.2008.10.037 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36337611&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boyce, B.L. AU - Dilmore, M.F. T1 - The dynamic tensile behavior of tough, ultrahigh-strength steels at strain-rates from 0.0002s−1 to 200s−1 JO - International Journal of Impact Engineering JF - International Journal of Impact Engineering Y1 - 2009/02// VL - 36 IS - 2 M3 - Article SP - 263 EP - 271 SN - 0734743X AB - Abstract: The present study examines the strain-rate sensitivity of four high-strength, high-toughness steels at strain-rates ranging from 0.0002s−1 to 200s−1: AerMet 100, modified 4340, modified HP9-4-20, and a recently developed Eglin AFB steel alloy, ES-1c. A newly developed dynamic servohydraulic method was employed to perform tensile tests over this entire range from quasi-static to near split-Hopkinson or Kolsky bar strain-rates. Each of these alloys exhibits only modest strain-rate sensitivity. Specifically, the semi-logarithmic strain-rate sensitivity factor β was found to be in the range of 14–20MPa depending on the alloy. This corresponds to a ∼10% increase in the yield strength over the 6-orders of magnitude change in strain-rate. Interestingly, while three of the alloys showed a concomitant ∼3–10% drop in their ductility with increasing strain-rate, the ES-1c alloy actually exhibited a 25% increase in ductility with increasing strain-rate. Fractography suggests the possibility that at higher strain-rates ES-1c evolves towards a more ductile dimple fracture mode associated with microvoid coalescence. [Copyright &y& Elsevier] AB - Copyright of International Journal of Impact Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STEEL -- Testing KW - STRAINS & stresses (Mechanics) KW - STEEL alloys KW - SURFACES (Technology) -- Analysis KW - DUCTILITY KW - FRACTOGRAPHY KW - Ductility KW - Steel KW - Strain-rate KW - Strength KW - Yield N1 - Accession Number: 35769386; Boyce, B.L. 1; Email Address: blboyce@sandia.gov Dilmore, M.F. 2; Affiliation: 1: Materials Science and Engineering Center, Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185-0889, USA 2: Damage Mechanisms Branch, Air Force Research Laboratory, Eglin AFB, FL, USA; Source Info: Feb2009, Vol. 36 Issue 2, p263; Subject Term: STEEL -- Testing; Subject Term: STRAINS & stresses (Mechanics); Subject Term: STEEL alloys; Subject Term: SURFACES (Technology) -- Analysis; Subject Term: DUCTILITY; Subject Term: FRACTOGRAPHY; Author-Supplied Keyword: Ductility; Author-Supplied Keyword: Steel; Author-Supplied Keyword: Strain-rate; Author-Supplied Keyword: Strength; Author-Supplied Keyword: Yield; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijimpeng.2007.11.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35769386&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Midey, Anthony AU - Dotan, Itzhak AU - Seeley, J.V. AU - Viggiano, A.A. T1 - Reactions of small negative ions with O2(a 1Δg) and O2(X 3Σg−) JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2009/02// VL - 280 IS - 1-3 M3 - Article SP - 6 EP - 11 SN - 13873806 AB - Abstract: The rate constants and product ion branching ratios were measured for the reactions of various small negative ions with O2(X 3Σg−) and O2(a 1Δg) in a selected ion flow tube (SIFT). Only NH2− and CH3O− were found to react with O2(X) and both reactions were slow. CH3O− reacted by hydride transfer, both with and without electron detachment. NH2− formed both OH−, as observed previously, and O2−, the latter via endothermic charge transfer. A temperature study revealed a negative temperature dependence for the former channel and Arrhenius behavior for the endothermic channel, resulting in an overall rate constant with a minimum at 500K. SF6−, SF4−, SO3− and CO3− were found to react with O2(a 1Δg) with rate constants less than 10−11 cm3 s−1. NH2− reacted rapidly with O2(a 1Δg) by charge transfer. The reactions of HO2− and SO2− proceeded moderately with competition between Penning detachment and charge transfer. SO2− produced a SO4− cluster product in 2% of reactions and HO2− produced O3− in 13% of the reactions. CH3O− proceeded essentially at the collision rate by hydride transfer, again both with and without electron detachment. These results show that charge transfer to O2(a 1Δg) occurs readily if the there are no restrictions on the ion beyond the reaction thermodynamics. The SO2− and HO2− reactions with O2(a) are the only known reactions involving Penning detachment besides the reaction with O2− studied previously [R.S. Berry, Phys. Chem. Chem. Phys., 7 (2005) 289–290]. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ION exchange (Chemistry) KW - BRANCHING ratios (Nuclear physics) KW - ANIONS KW - CHARGE transfer KW - CHEMICAL kinetics KW - ARRHENIUS equation KW - NEGATIVE temperature KW - PENNING trap mass spectrometry KW - Excited oxygen KW - Negative ions KW - Penning detachment KW - Rate constants N1 - Accession Number: 36195827; Midey, Anthony 1,2 Dotan, Itzhak 1,3 Seeley, J.V. 4 Viggiano, A.A. 1; Email Address: Albert.Viggiano@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom Air Force Base, MA 01731-3010, United States 2: Under Contract to the Institute for Scientific Research, Boston College, Chestnut Hill, MA 02467, United States 3: The Open University of Israel, 108 Ravutski Street, Raanana 43107, Israel 4: Department of Chemistry, Oakland University, Rochester, MI 48309-4401, United States; Source Info: Feb2009, Vol. 280 Issue 1-3, p6; Subject Term: ION exchange (Chemistry); Subject Term: BRANCHING ratios (Nuclear physics); Subject Term: ANIONS; Subject Term: CHARGE transfer; Subject Term: CHEMICAL kinetics; Subject Term: ARRHENIUS equation; Subject Term: NEGATIVE temperature; Subject Term: PENNING trap mass spectrometry; Author-Supplied Keyword: Excited oxygen; Author-Supplied Keyword: Negative ions; Author-Supplied Keyword: Penning detachment; Author-Supplied Keyword: Rate constants; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.ijms.2008.05.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36195827&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiao, Charles Q. AU - Ganguly, Biswa N. AU - Garscadden, Alan T1 - Mass spectrometry study of decomposition of exo-tetrahydrodicyclopentadiene by low-power, low-pressure rf plasma. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2009/02// VL - 105 IS - 3 M3 - Article SP - N.PAG PB - American Institute of Physics SN - 00218979 AB - The plasma cracking of exo-tetrahydrodicyclopentadiene (JP-10) (C10H16) is investigated using a quadrupole mass spectrometer. The relative densities of the JP-10 molecule and its principal decomposition products, including H2, are determined for varying rf powers in the range of 3–30 W, using the measured ion intensities combined with ionization cross section data from the literature. The extent of the cracking of JP-10 and the formation of H2 as functions of the rf power are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MASS spectrometers KW - SCISSION (Chemistry) KW - SPECTROMETERS KW - IONIZATION (Atomic physics) KW - CHEMICAL reactions N1 - Accession Number: 36534308; Jiao, Charles Q. 1 Ganguly, Biswa N. 2 Garscadden, Alan 2; Affiliation: 1: Innovative Scientific Solutions Inc., Dayton, Ohio 45450-3638, 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7251,; Source Info: Feb2009, Vol. 105 Issue 3, pN.PAG; Subject Term: MASS spectrometers; Subject Term: SCISSION (Chemistry); Subject Term: SPECTROMETERS; Subject Term: IONIZATION (Atomic physics); Subject Term: CHEMICAL reactions; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 5p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.3074103 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36534308&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Newell, Patrick T. AU - Liou, Kan AU - Wilson, Gordon R. T1 - Polar cap particle precipitation and aurora: Review and commentary JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2009/02// VL - 71 IS - 2 M3 - Article SP - 199 EP - 215 SN - 13646826 AB - Abstract: Polar rain has a beautiful set of symmetry properties, individually established, but not previously discussed collectively, which can be organized by a single unifying principle. The key polar rain properties are favored hemisphere (controlled by the interplanetary magnetic field Bx ), dawn/dusk gradient (IMF By ), merging rate (IMF Bz or more generally dΦ MP/dt), nightside/dayside gradient, and seasonal effect. We argue that all five properties involve variants on a single theme: the further downstream a field line exits the magnetosphere (or less directly points toward the solar wind electron heat flux), the weaker the polar rain. This effect is the result of the requirements of charge quasi-neutrality, and because the ion thermal velocity declines and the tailward ion bulk flow velocity rises moving down tail from the frontside magnetopause. Polar cap arcs (or more properly, high-latitude sun-aligned arcs) are largely complementary to the polar rain, occurring most frequently when the dayside merging rate is low, and thus when polar rain is weak. Sun-aligned arcs are often considered as originating either in the polar rain or the expansion of the plasma sheet into the polar cap. In fact three quite distinct types of sun-aligned high-latitude arcs exist, two common, and one rare. One type of arc occurs as intensifications of the polar rain, and is common, but weak, typically <0.1ergs/cm2 s, and lacks associated ion precipitation. A second category of Sun-aligned arcs with energy flux >0.1ergs/cm2 s usually occurs adjacent to the auroral oval, and includes ion precipitation. The plasma regime of these common, and at times intense, arcs is often distinct from the oval which they abut. Convection alone does not specify the open/closed nature of these arcs, because multiple narrow convection reversals are common around such arcs, and the arcs themselves can be embedded within flows that are either sunward or anti-sunward. These observational facts do not neatly fit into either a plasma sheet origin or a polar rain origin (e.g., the necessity to abut the auroral oval, and the presence of ions does not fit the properties of polar rain, which can in any event be nearly absent for northward interplanetary magnetic field). One theory is that such arcs are associated with merging tailward of the cusp. Both of these common types of sun-aligned arcs fade within about 30min of a southward IMF turning. The third, and rarest, category of sun-aligned arcs are intense, well detached from the auroral oval, contain plasma sheet origin ion precipitation as well as electrons, and persist for hours after a southward turning. These intense detached sun-aligned arcs can rapidly cross the polar cap, sometimes multiple times. Most events discussed in the literature as “theta-aurora” do not fit into this category (for example, although they may appear detached in images, they abut the oval in particle data, and do not have the persistence of detached events under southward IMF turnings). It is possible that no single theory can account for all three types of sun-aligned arcs. Solar energetic particle (SEP) events are at times used to demarcate polar cap open/closed boundaries. Although this works at times, examples exist where this method fails (e.g., very quiet conditions for which SEP reaches below L=4), and the method should be used with caution. Finally, it is shown that, although it is rare, the polar cap can at times completely close. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ICE KW - PRECIPITATION (Meteorology) KW - AURORAS KW - AURORAL electrons KW - MAGNETOSPHERE KW - SYMMETRY (Physics) KW - ANTARCTICA KW - Aurora KW - Polar cap KW - Polar rain KW - Sun-aligned arcs N1 - Accession Number: 36392671; Newell, Patrick T. 1; Email Address: patrick.newell@jhuapl.edu Liou, Kan 1 Wilson, Gordon R. 2; Affiliation: 1: The Johns Hopkins University, Applied Physics Laboratory, Laurel, MD 20723, USA 2: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA; Source Info: Feb2009, Vol. 71 Issue 2, p199; Subject Term: ICE; Subject Term: PRECIPITATION (Meteorology); Subject Term: AURORAS; Subject Term: AURORAL electrons; Subject Term: MAGNETOSPHERE; Subject Term: SYMMETRY (Physics); Subject Term: ANTARCTICA; Author-Supplied Keyword: Aurora; Author-Supplied Keyword: Polar cap; Author-Supplied Keyword: Polar rain; Author-Supplied Keyword: Sun-aligned arcs; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.jastp.2008.11.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36392671&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cazacu, Oana AU - Stewart, Joel B. T1 - Analytic plastic potential for porous aggregates with matrix exhibiting tension–compression asymmetry JO - Journal of the Mechanics & Physics of Solids JF - Journal of the Mechanics & Physics of Solids Y1 - 2009/02// VL - 57 IS - 2 M3 - Article SP - 325 EP - 341 SN - 00225096 AB - This paper is devoted to modeling the effects of the tension–compression asymmetry of the matrix on yielding of the void–matrix aggregate. The matrix plastic behavior is described by the Cazacu et al. [2006. Orthotropic yield criterion for hexagonal closed packed metals. Int. J. Plasticity 22, 1171–1194] isotropic yield criterion, which captures strength differential effects. Using an upper-bound approach, a new analytic isotropic plastic potential for a random distribution of spherical voids is obtained. The derived analytic potential is sensitive to the third invariant of the stress deviator and displays tension–compression asymmetry. In the case when the matrix material has the same yield in tension and compression, it reduces to Gurson''s [1977. Continuum theory of ductile rupture by void nucleation and growth: Part I: Yield criteria and flow rules for porous ductile media. J. Eng. Mater. Technol. Trans. ASME Ser. H 99, 2–15.] criterion. Furthermore, the proposed criterion predicts the exact solution of a hollow sphere loaded in hydrostatic tension or compression. The accuracy of the proposed analytical criterion is assessed through comparisons with finite-element cell calculations. [Copyright &y& Elsevier] AB - Copyright of Journal of the Mechanics & Physics of Solids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASTICITY KW - POROUS materials KW - MINERAL aggregates KW - HYDROSTATICS KW - FINITE element method KW - Constitutive behavior KW - Directional slip KW - Elastic–plastic porous materials KW - Finite elements KW - Voids and inclusions N1 - Accession Number: 36018008; Cazacu, Oana 1; Email Address: cazacu@reef.ufl.edu Stewart, Joel B. 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, University of Florida/REEF, 1350 N. Poquito Road, Shalimar, FL 32539, USA 2: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, USA; Source Info: Feb2009, Vol. 57 Issue 2, p325; Subject Term: PLASTICITY; Subject Term: POROUS materials; Subject Term: MINERAL aggregates; Subject Term: HYDROSTATICS; Subject Term: FINITE element method; Author-Supplied Keyword: Constitutive behavior; Author-Supplied Keyword: Directional slip; Author-Supplied Keyword: Elastic–plastic porous materials; Author-Supplied Keyword: Finite elements; Author-Supplied Keyword: Voids and inclusions; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.jmps.2008.10.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36018008&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coker, Clayton AU - Dymond, Kenneth F. AU - Budzien, Scott A. AU - Chua, Damien H. AU - Jann-Yenq Liu AU - Anderson, David N. AU - Basu, Sunanda AU - Pedersen, Todd R. T1 - Observations of the Ionosphere Using the Tiny Ionospheric Photometer. JO - Terrestrial, Atmospheric & Oceanic Sciences JF - Terrestrial, Atmospheric & Oceanic Sciences Y1 - 2009/02// VL - 20 IS - 1 M3 - Article SP - 227 EP - 235 SN - 10170839 AB - The Tiny Ionospheric Photometer (TIP) on the Constellation Observing System for Meteorology, Ionosphere, and Climate (FORMOSAT-3/COSMIC) characterizes the nighttime ionosphere using 135.6-nm radiative recombination emission. TIP measures horizontal structure of the ionosphere with high precision and high spatial resolution. Latitudinal, longitudinal, and temporal distribution of the nighttime ionosphere is specified. We present a review of ionospheric observations made with TIP during the first five months of operation. Comparisons are made with other ionospheric sensors in order to validate the TIP observations and to demonstrate TIP resolution and sensitivity performance. Equatorial anomalies observed by TIP are compared with estimates of the E x B vertical drift during the post-sunset pre-reversal enhancement in the Peruvian sector. Low latitude irregularity structures observed by TIP are compared with measurements from ground-based sensors including: imaging photometers, ionosonde, and UHF scintillation receivers. Detailed measurements of low latitude density depletion depth and width are provided. Global ionospheric morphology observed by TIP is compared with similar observations by COSMIC radio occultation, and the GAIM model. The complexity of the underlying neutral winds is revealed by the TIP ionospheric morphology. [ABSTRACT FROM AUTHOR] AB - Copyright of Terrestrial, Atmospheric & Oceanic Sciences is the property of Chinese Geoscience Union (CGU) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSPHERE -- Observations KW - ASTRONOMICAL photometry KW - NIGHT KW - OCCULTATIONS (Astronomy) KW - LATITUDE KW - Equatorial anomaly KW - Fax ultraviolet KW - Ionosphere KW - Irregularities N1 - Accession Number: 37568356; Coker, Clayton 1; Email Address: clayton.coker@nrl.navy.mil Dymond, Kenneth F. 1 Budzien, Scott A. 1 Chua, Damien H. 1 Jann-Yenq Liu 2 Anderson, David N. 3 Basu, Sunanda 4 Pedersen, Todd R. 5; Affiliation: 1: Space Science Division, Naval Research Laboratory, Washington, District of Columbia, USA 2: Institute of Space Science, National Central University, Chung-Li, Taiwan, ROC 3: University of Colorado/CIRES, NOAA/Space Weather Prediction Center, Boulder, Colorado, USA 4: Center for Space Physics, Boston University, Boston, Massachusetts, USA 5: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts, USA; Source Info: Feb2009, Vol. 20 Issue 1, p227; Subject Term: IONOSPHERE -- Observations; Subject Term: ASTRONOMICAL photometry; Subject Term: NIGHT; Subject Term: OCCULTATIONS (Astronomy); Subject Term: LATITUDE; Author-Supplied Keyword: Equatorial anomaly; Author-Supplied Keyword: Fax ultraviolet; Author-Supplied Keyword: Ionosphere; Author-Supplied Keyword: Irregularities; Number of Pages: 9p; Illustrations: 5 Graphs, 2 Maps; Document Type: Article L3 - 10.3319/TAO.2008.01.18.02(F3C) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37568356&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reboulet, James AU - Cunningham, Robert AU - Gunasekar, Palur G. AU - Chapman, Gail D. AU - Stevens, Sean C. T1 - Loop System for Creating Jet Fuel Vapor Standards Used in the Calibration of Infrared Spectrophotometers and Gas Chromatographs. JO - Toxicology Mechanisms & Methods JF - Toxicology Mechanisms & Methods Y1 - 2009/02// VL - 19 IS - 2 M3 - Article SP - 123 EP - 128 PB - Taylor & Francis Ltd SN - 15376516 AB - A whole body inhalation study of mixed jet fuel vapor and its aerosol necessitated the development of a method for preparing vapor only standards from the neat fuel. Jet fuel is a complex mixture of components which partitions between aerosol and vapor when aspirated based on relative volatility of the individual compounds. A method was desired which could separate the vapor portion from the aerosol component to prepare standards for the calibration of infrared spectrophotometers and a head space gas chromatography system. A re-circulating loop system was developed which provided vapor only standards whose composition matched those seen in an exposure system. Comparisons of nominal concentrations in the exposure system to those determined by infrared spectrophotometry were in 92-95% agreement. Comparison of jet fuel vapor concentrations determined by infrared spectrophotometry compared to head space gas chromatography yielded a 93% overall agreement in trial runs. These levels of agreement show the loop system to be a viable method for creating jet fuel vapor standards for calibrating instruments. [ABSTRACT FROM AUTHOR] AB - Copyright of Toxicology Mechanisms & Methods is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JET planes -- Fuel KW - AUTOMOBILES -- Fuel systems -- Vapor lock KW - AEROSOLS (Sprays) KW - VAPORS KW - SPECTROPHOTOMETERS KW - GAS chromatography KW - Chromatography KW - Complex mixtures KW - Head space analysis KW - Infrared spectrophotometry KW - Inhalation KW - Jet fuel N1 - Accession Number: 36359587; Reboulet, James 1 Cunningham, Robert 2 Gunasekar, Palur G. 2 Chapman, Gail D. 2; Email Address: gail.chapman@wpafb.af.mil Stevens, Sean C. 3; Affiliation: 1: Naval Health Research Laboratory Detachment/Environmental Health Effects Laboratory, SAIC Inc, Wright-Patterson AFB, OH, USA 2: Naval Health Research Laboratory Detachment/Environmental Health Effects Laboratory, Wright-Patterson AFB, OH, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Feb2009, Vol. 19 Issue 2, p123; Subject Term: JET planes -- Fuel; Subject Term: AUTOMOBILES -- Fuel systems -- Vapor lock; Subject Term: AEROSOLS (Sprays); Subject Term: VAPORS; Subject Term: SPECTROPHOTOMETERS; Subject Term: GAS chromatography; Author-Supplied Keyword: Chromatography; Author-Supplied Keyword: Complex mixtures; Author-Supplied Keyword: Head space analysis; Author-Supplied Keyword: Infrared spectrophotometry; Author-Supplied Keyword: Inhalation; Author-Supplied Keyword: Jet fuel; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; Number of Pages: 6p; Illustrations: 2 Diagrams, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1080/15376510802305054 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36359587&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pandey, R. B. AU - Farmer, B. L. T1 - Residue energy and mobility in sequence to global structure and dynamics of a HIV-1 protease (1DIFA) by a coarse-grained Monte Carlo simulation. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2009/01/28/ VL - 130 IS - 4 M3 - Article SP - N.PAG PB - American Institute of Physics SN - 00219606 AB - Energy, mobility, and structural profiles of residues in a specific sequence of human immunodeficiency virus (HIV)-1 protease chain and its global conformation and dynamics are studied by a coarse-grained computer simulation model on a cubic lattice. HIV-1 protease is described by a chain of 99 residues (nodes) in a specific sequence (1DIFA) with N- and C-terminals on the lattice, where empty lattice sites represent an effective solvent medium. Internal structures of the residues are ignored but their specificities are captured via an interaction ([variant_greek_epsilon]ij) matrix (residue-residue, residue-solvent) of the coefficient (f[variant_greek_epsilon]ij) of the Lennard-Jones potential. Simulations are performed for a range of interaction strength (f) with the solvent-residue interaction describing the quality of the solvent. Snapshots of the protein show considerable changes in the conformation of the protein on varying the interaction. From the mobility and energy profiles of the residues, it is possible to identify the active (and not so active) segments of the protein and consequently their role in proteolysis. Contrary to interaction thermodynamics, the hydrophobic residues possess higher configurational energy and lower mobility while the electrostatic and polar residues are more mobile despite their lower interaction energy. Segments of hydrophobic core residues, crucial for the structural evolution of the protein are identified—some of which are consistent with recent molecular dynamics simulation in context to possible clinical observations. Global energy and radius of gyration of the protein exhibit nonmonotonic dependence on the interaction strength (f) with opposite trends, e.g., rapid transition into globular structure with higher energy. Variations of the rms displacement of the protein and that of a tracer residue, Gly49, with the time steps show how they slow down on increasing the interaction strength. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR dynamics KW - HIV (Viruses) KW - COMPUTER simulation KW - POLYPEPTIDES KW - MONTE Carlo method KW - AMINO acids KW - THERMODYNAMICS N1 - Accession Number: 36377547; Pandey, R. B. 1; Email Address: ras.pandey@usm.edu Farmer, B. L. 2; Affiliation: 1: Department of Physics and Astronomy, University of Southern Mississippi, Hattiesburg, Mississippi 39406-5046, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, USA; Source Info: 1/28/2009, Vol. 130 Issue 4, pN.PAG; Subject Term: MOLECULAR dynamics; Subject Term: HIV (Viruses); Subject Term: COMPUTER simulation; Subject Term: POLYPEPTIDES; Subject Term: MONTE Carlo method; Subject Term: AMINO acids; Subject Term: THERMODYNAMICS; Number of Pages: 10p; Illustrations: 3 Diagrams, 3 Charts, 8 Graphs; Document Type: Article L3 - 10.1063/1.3050106 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36377547&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - DesAutels, Logan AU - Brewer, Christopher AU - Powers, Peter AU - Walker, Mark AU - Tomlin, David AU - Fratini, Albert AU - Juhl, Shane AU - Chen, Weibin T1 - Femtosecond index change mechanisms and morphology of SiC crystalline materials JO - Physics Letters A JF - Physics Letters A Y1 - 2009/01/26/ VL - 373 IS - 5 M3 - Article SP - 583 EP - 591 SN - 03759601 AB - Abstract: Femtosecond lasers have a unique ability of processing bulk transparent materials for various applications such as micromachining, waveguide manufacturing, and photonic bandgap structures just to name a few. These applications depend on the formation of micron or submicron size features that are known to be index modifications to the bulk substrate [H. Guo, H. Jiang, Y. Fang, C. Peng, H. Yang, Y. Li, Q. Gong, J. Opt. A: Pure Appl. Opt. 6 (2004) 787]. To the best of our knowledge the physical understanding of how these index-modified features are formed is still unknown, but many good theories exist such as Petite et al. [G. Petite, P. Daguzan, S. Guizard, P. Martin, in: IEEE Annual Report Conference on Electrical Insulation and Dielectric Phenomena, vol. 15, IEEE, 1995, pp. 40–44] or Tien et al. [A. Tien, S. Backus, H. Kapteyn, M. Murnane, G. Mourou, Phys. Rev. Lett. 82 (1999) 3883]. In this Letter the question on the physical cause for index changes is investigated by the combined efforts between Wright–Patterson AFB (WPAFB) and the University of Dayton (UD) using numerous imaging equipment such as TEM, AFM, NSOM, Nomarski microscopy, X-ray crystallography, Raman spectroscopy, and even diffraction efficiency experiments. With all the combined imaging equipment this research is able to present valuable data and deduce plausible theories of the physics of the index modification mechanism. [Copyright &y& Elsevier] AB - Copyright of Physics Letters A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON carbide KW - X-ray crystallography KW - MICROMACHINING KW - ENERGY gaps (Physics) KW - PHOTONICS KW - LASERS -- Industrial applications N1 - Accession Number: 36015389; DesAutels, Logan 1; Email Address: ld@loganopticaldesign.com Brewer, Christopher 2 Powers, Peter 3 Walker, Mark 4 Tomlin, David 5 Fratini, Albert 6 Juhl, Shane 2 Chen, Weibin 7; Affiliation: 1: Wright–Patterson AFB, Air Force Research Laboratory, Materials and Manufacturing Directorate, AT&T Government Solutions Inc., Dayton, OH 45433, USA 2: Wright–Patterson AFB, Air Force Research Laboratory, Materials and Manufacturing Directorate, Dayton, OH 45424, USA 3: Electro-Optics and Physics Departments, University of Dayton, Dayton, OH 45469, USA 4: Wright–Patterson AFB, Air Force Research Laboratory, Materials and Manufacturing Directorate, General Dynamics Information Tech., Dayton, OH 45431, USA 5: Wright–Patterson AFB, Air Force Research Laboratory, Materials and Manufacturing Directorate, UES Inc., Dayton, OH 45433, USA 6: Chemistry Department, University of Dayton, Dayton, OH 45469, USA 7: Electro-Optics Graduate Program, University of Dayton, Dayton, OH 45469, USA; Source Info: Jan2009, Vol. 373 Issue 5, p583; Subject Term: SILICON carbide; Subject Term: X-ray crystallography; Subject Term: MICROMACHINING; Subject Term: ENERGY gaps (Physics); Subject Term: PHOTONICS; Subject Term: LASERS -- Industrial applications; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.physleta.2008.11.062 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36015389&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Buguo AU - Bliss, David F. AU - Callahan, Michael J. T1 - Hydrothermal growth of Ti:sapphire (Ti3+: Al2O3) laser crystals JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2009/01/15/ VL - 311 IS - 3 M3 - Article SP - 443 EP - 447 SN - 00220248 AB - Abstract: Titanium(III)-doped sapphire single crystals (Ti3+:Al2O3) have been grown by the hydrothermal technique for the first time. Due to Ti3+ instability, Ti:sapphire could not easily be grown in alkaline solution. Instead, we grew the crystals in acidic solutions. The solubility of Ti3+:Al2O3 in HCl hydrothermal solutions was found to exhibit a negative temperature coefficient. The grown crystals were characterized by X-ray diffraction, elemental analysis, and electron paramagnetic resonance (EPR). The results indicated that the grown crystals have a uniform distribution of Ti(III) (about 2×1020 atoms/cc) and are of high quality. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLID-state lasers KW - SAPPHIRES KW - CRYSTAL growth KW - DOPED semiconductors KW - TITANIUM KW - SOLUTION (Chemistry) KW - X-ray diffraction KW - ELECTRON paramagnetic resonance KW - A2. Hydrothermal technique KW - B1. Oxides KW - B1. Ti:sapphire KW - B3. Solid state lasers N1 - Accession Number: 36540481; Wang, Buguo 1; Email Address: buguo@solidstatescientific.com Bliss, David F. 2; Email Address: david.bliss@hanscom.af.mil Callahan, Michael J. 2; Affiliation: 1: Solid State Scientific Corporation, Hollis, NH 03049, USA 2: Sensors Directorate, Air Force Research Laboratory, 80 Scott Drive, Hanscom AFB, MA 01731, USA; Source Info: Jan2009, Vol. 311 Issue 3, p443; Subject Term: SOLID-state lasers; Subject Term: SAPPHIRES; Subject Term: CRYSTAL growth; Subject Term: DOPED semiconductors; Subject Term: TITANIUM; Subject Term: SOLUTION (Chemistry); Subject Term: X-ray diffraction; Subject Term: ELECTRON paramagnetic resonance; Author-Supplied Keyword: A2. Hydrothermal technique; Author-Supplied Keyword: B1. Oxides; Author-Supplied Keyword: B1. Ti:sapphire; Author-Supplied Keyword: B3. Solid state lasers; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jcrysgro.2008.09.052 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36540481&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Muratore, C. AU - Hu, J.J. AU - Voevodin, A.A. T1 - Tribological coatings for lubrication over multiple thermal cycles JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2009/01/15/ VL - 203 IS - 8 M3 - Article SP - 957 EP - 962 SN - 02578972 AB - Abstract: Nanocomposite materials demonstrating multiple temperature-adaptive mechanisms including diffusion, oxidation and/or catalysis mechanisms to yield low friction coefficients of <0.2 from room temperature to 700 °C were combined with diffusion barrier layers in coatings with different architectures (e.g., layer thicknesses, number of layers, etc.) to examine adaptation of contact surface chemistry and morphology over multiple thermal cycles. Multilayered coatings consisting of ceramic–metal nanocomposite adaptive lubricant layers separated by diffusion barriers allowed adaptation to occur only upon exposure of the lubricant layer by wear, which resulted in prolonged wear life at static and cycled temperatures. It was also observed that a relationship between the number of adaptive lubricant layers and the number of thermal cycles existed, where one thermal cycle consumed two adaptive lubricant layers. The thickness of the adaptive coating layers was also important because diffusion- and oxidation-based adaptation in these particular coatings required a minimum volume of solid lubricant material. The surface roughness of the adaptive coating materials played a significant role in their performance within multilayered coatings, where rough coatings (>100 nm R a) failed after relatively few sliding cycles. The utility and application of adaptive coatings materials providing lubrication over multiple thermal cycles is discussed. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRIBOLOGY KW - COATING processes KW - THERMODYNAMIC cycles KW - COMPOSITE materials KW - CATALYSIS KW - NANOPARTICLES KW - SURFACE roughness KW - Adaptive coatings KW - High-temperature materials KW - Solid lubrication KW - Tribology N1 - Accession Number: 35768057; Muratore, C.; Email Address: chris.muratore@wpafb.af.mil Hu, J.J. 1 Voevodin, A.A. 1; Affiliation: 1: Air Force Research Laboratory, Thermal Science and Materials Branch, Wright-Patterson Air Force Base, Ohio 45433 USA; Source Info: Jan2009, Vol. 203 Issue 8, p957; Subject Term: TRIBOLOGY; Subject Term: COATING processes; Subject Term: THERMODYNAMIC cycles; Subject Term: COMPOSITE materials; Subject Term: CATALYSIS; Subject Term: NANOPARTICLES; Subject Term: SURFACE roughness; Author-Supplied Keyword: Adaptive coatings; Author-Supplied Keyword: High-temperature materials; Author-Supplied Keyword: Solid lubrication; Author-Supplied Keyword: Tribology; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.surfcoat.2008.08.073 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35768057&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Placidus B. Amama AU - Cary L. Pint AU - Laura McJilton AU - Seung Min Kim AU - Eric A. Stach AU - P. Terry Murray AU - Robert H. Hauge AU - Benji Maruyama T1 - Role of Water in Super Growth of Single-Walled Carbon Nanotube Carpets. JO - Nano Letters JF - Nano Letters Y1 - 2009/01/14/ VL - 9 IS - 1 M3 - Article SP - 44 EP - 49 SN - 15306984 AB - The Ostwald ripening behavior of Fe catalyst films deposited on thin alumina supporting layers is demonstrated as a function of thermal annealing in H2and H2/H2O. The addition of H2O in super growth of single-walled carbon nanotube carpets is observed to inhibit Ostwald ripening due to the ability of oxygen and hydroxyl species to reduce diffusion rates of catalyst atoms. This work shows the impact of typical carpet growth environments on catalyst film evolution and the role Ostwald ripening may play in the termination of carpet growth. [ABSTRACT FROM AUTHOR] AB - Copyright of Nano Letters is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - COATING processes KW - OSTWALD ripening KW - THIN films KW - IRON catalysts KW - HEAT treatment N1 - Accession Number: 36166872; Placidus B. Amama 1 Cary L. Pint 1 Laura McJilton 1 Seung Min Kim 1 Eric A. Stach 1 P. Terry Murray 1 Robert H. Hauge 1 Benji Maruyama 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright-Patterson Air Force Base, Ohio 45433, Richard E. Smalley Institute for Nanoscale Science and Technology, Department of Physics and Astronomy, and Department of Chemistry, Rice University, Houston Texas 77005, Universal Technology Corporation, Dayton, Ohio 45432, School of Materials Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, and UDRI, University of Dayton, Dayton, Ohio 45469; Source Info: Jan2009, Vol. 9 Issue 1, p44; Subject Term: CARBON nanotubes; Subject Term: COATING processes; Subject Term: OSTWALD ripening; Subject Term: THIN films; Subject Term: IRON catalysts; Subject Term: HEAT treatment; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36166872&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - David H. Wang AU - Loon-Seng Tan AU - Houjin Huang AU - Liming Dai AU - Eiji O̅sawa T1 - In-Situ Nanocomposite Synthesis: Arylcarbonylation and Grafting of Primary Diamond Nanoparticles with a Poly(ether−ketone) in Polyphosphoric Acid. JO - Macromolecules JF - Macromolecules Y1 - 2009/01/13/ VL - 42 IS - 1 M3 - Article SP - 114 EP - 124 SN - 00249297 AB - In a model reaction to demonstrate the presence and reactivity of sp2C−H, the primary particles (∼5 nm) of detonation nanodiamond (DND) were arylcarbonylated with 2,4,6-trimethylphenoxybenzoic acid in polyphosphoric acid (PPA) via a Friedel−Crafts reaction. The possibility of grafting primary DND particle was supported by the results from FTIR, scanning electron microscopy (SEM), and elemental analysis. From the latter result, we estimated the degree of functionalization to be ∼2.3 atom %. The arylcarbonylated DND achieved better and stable dispersion than pristine DND in common organic solvents. PPA-treated DND from the control experiment retained most of the pristine DND’s properties, except that its thermo-oxidative stability is noticeably improved as indicated by the result from thermogravimetric analysis (TGA in air). Subsequently, 3-phenoxybenzoic acid (PBA) was polymerized in PPA with the pristine DND (1.0−30 wt %) in situ to generate meta-poly(ether−ketone)-grafted DND composites, mPEK-g-DND. It was found that the mPEK-g-DND nanocomposites were not only soluble in methanesulfonic acid (MSA), but also dispersed well in solvents such as N-methyl-2-pyrrolidinone (NMP) and tetrahydrofuran (THF). Their intrinsic viscosity values ranged from 0.67 to 1.42 dL/g in MSA at 30 °C. Interestingly, a polyelectrolyte effect was observed for the nanocomposites with DND content >10 wt %. As compared to the neat mPEK polymer, the glass transition temperatures of these nanocomposites were increased by as much as 19 °C, while their short-term thermal and thermo-oxidative stabilities, as defined by the temperatures at which 5 wt % loss (Td5%) occurred during TGA scans, were increased by 34−88 °C in air and 59−108 °C in nitrogen. The wide-angle X-ray diffraction results showed that the intensity of the characteristic diamond d-spacing (111) at 2.05 Å grew proportionately with the DND content in the samples. Morphological studies (SEM and TEM) provided further evidence to support the feasibility of polymer grafting and formation of in-situ nanocomposites. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANODIAMONDS KW - TETRAHYDROFURAN KW - ORGANIC solvents KW - VISCOSITY KW - SIMULATION methods & models KW - FOURIER transform infrared spectroscopy KW - SCANNING electron microscopy N1 - Accession Number: 35976421; David H. Wang 1 Loon-Seng Tan 1 Houjin Huang 1 Liming Dai 1 Eiji O̅sawa 1; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469-0060; Nanostructured & Biological Materials Branch, Materials and Manufacturing Directorate Air Force Research Laboratory, AFRL/RXBN, Wright-Patterson AFB, Ohio 45433-7750; Department of Chemical and Materials Engineering, University of Dayton, 300 College Park, Dayton, Ohio 45469; and NanoCarbon Research Institute, Ltd., Asama Research Extension Centre, Faculty of Textile Science & Technology, Shinshu University, 3-15-1 Tokita, Ueda, Nagano 386-8567, Japan; Source Info: Jan2009, Vol. 42 Issue 1, p114; Subject Term: NANODIAMONDS; Subject Term: TETRAHYDROFURAN; Subject Term: ORGANIC solvents; Subject Term: VISCOSITY; Subject Term: SIMULATION methods & models; Subject Term: FOURIER transform infrared spectroscopy; Subject Term: SCANNING electron microscopy; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35976421&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Longnecker, Matthew P. AU - Michalek, Joel E. T1 - RE: “WEIGHT HISTORY, GLUCOSE INTOLERANCE, AND INSULIN LEVELS IN MIDDLE-AGED SWEDISH MEN”. JO - American Journal of Epidemiology JF - American Journal of Epidemiology Y1 - 2009/01/11/ VL - 150 IS - 4 M3 - Letter SP - 430 EP - 431 SN - 00029262 KW - LETTERS to the editor KW - GLUCOSE intolerance KW - INSULIN regulation KW - RISK factors N1 - Accession Number: 82501898; Longnecker, Matthew P. 1 Michalek, Joel E. 2; Affiliation: 1: Epidemiology Branch, National Institute of Environmental Health Sciences Research Triangle Park, NC 27709 2: air Force Research Laboratory, Brooks Air Force Base San Antonio, TX 78235; Source Info: 1999, Vol. 150 Issue 4, p430; Subject Term: LETTERS to the editor; Subject Term: GLUCOSE intolerance; Subject Term: INSULIN regulation; Subject Term: RISK factors; Number of Pages: 2p; Document Type: Letter UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82501898&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Michalek, Joel E. AU - Ketchum, Norma S. AU - Check, Irene J. T1 - Serum Dioxin and Immunologic Response in Veterans of Operation Ranch Hand. JO - American Journal of Epidemiology JF - American Journal of Epidemiology Y1 - 2009/01/06/ VL - 149 IS - 11 M3 - Article SP - 1038 EP - 1046 SN - 00029262 AB - The authors studied immune response and exposure to 2, 3, 7, 8-tetrachlorodibenzo-p-dioxin (dioxin) among veterans of Operation Ranch Hand, the US Air Force unit responsible for the aerial spraying of herbicides in Vietnam from 1962 to 1971. A comparison group of Air Force veterans who served in Southeast Asia but were not involved in spraying herbicides was included. The authors studied delayed-type hypersensitivity skin test responses to Candida albicans, mumps, Trichophyton, and a bacterial antigen made from lysed Staphylococcus aureus. Lymphocyte measurements included total lymphocyte counts; T-cell (CD3, CD4, CD5, and CD8), B-cell (CD20), and NK-cell (CD16 and CD56) subsets; and expression of the activation antigen CD25 on CD3 T cells. The authors quantitated the serum concentrations of immunoglobulin (lg)A, IgG, and IgM; examined sera for the presence of monoclonal immunoglobulins (M proteins); and looked for a broad range of autoantibodies (rheumatoid factor, antinuclear antibody, smooth muscle autoantibody, mitochondrial autoantibody, parietal cell autoantibody, and thyroid microsomal autoantibodies). They measured the level of dioxin in 1987 or 1992, extrapolated the result to the time of service in Vietnam, and assigned each veteran to one of four exposure categories: Comparison and three Ranch Hand groups (Background, Low, or High). Overall, the authors found no evidence of a consistent relation between dioxin exposure category and immune system alteration. Am J Epidemiol 1999; 149:1038–46. [ABSTRACT FROM PUBLISHER] AB - Copyright of American Journal of Epidemiology is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPERATION Ranch Hand, 1962-1971 KW - DIOXINS -- Physiological effect KW - VETERANS -- Health KW - RESEARCH KW - AUTOANTIBODIES KW - HERBICIDES -- Physiological effect KW - HERBICIDES in war KW - autoantibodies KW - dioxins KW - herbicides KW - hypersensitivity, delayed KW - immune system KW - military personnel KW - skin tests KW - veterans N1 - Accession Number: 82423416; Michalek, Joel E. 1 Ketchum, Norma S. 1 Check, Irene J. 2,3; Affiliation: 1: Air Force Research Laboratory, Brooks Air Force Base TX 2: Department of Pathology and Laboratory Medicine, Evanston Hospital Evanston, IL 3: Department of Pathology, Northwestern University Medical School Chicago, IL; Source Info: 1999, Vol. 149 Issue 11, p1038; Subject Term: OPERATION Ranch Hand, 1962-1971; Subject Term: DIOXINS -- Physiological effect; Subject Term: VETERANS -- Health; Subject Term: RESEARCH; Subject Term: AUTOANTIBODIES; Subject Term: HERBICIDES -- Physiological effect; Subject Term: HERBICIDES in war; Author-Supplied Keyword: autoantibodies; Author-Supplied Keyword: dioxins; Author-Supplied Keyword: herbicides; Author-Supplied Keyword: hypersensitivity, delayed; Author-Supplied Keyword: immune system; Author-Supplied Keyword: military personnel; Author-Supplied Keyword: skin tests; Author-Supplied Keyword: veterans; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=82423416&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shea, Margaret (Peggy) Ann T1 - Book Review JO - Advances in Space Research JF - Advances in Space Research Y1 - 2009/01/05/ VL - 43 IS - 1 M3 - Book Review SP - 193 EP - 194 SN - 02731177 N1 - Accession Number: 35770554; Shea, Margaret (Peggy) Ann 1; Email Address: sssrc@msn.com; Affiliation: 1: Air Force Research Laboratory (Emeritus), Hanscom AFB, Bedford, MA 01731, USA; Source Info: Jan2009, Vol. 43 Issue 1, p193; Number of Pages: 2p; Document Type: Book Review L3 - 10.1016/j.asr.2008.11.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35770554&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tomczak, Sandra J. AU - Wright, Michael E. AU - Guenthner, Andrew J. AU - Pettys, Brian J. AU - Brunsvold, Amy L. AU - Knight, Casey AU - Minton, Timothy K. AU - Vij, Vandana AU - McGrath, Laura M. AU - Mabry, Joseph M. T1 - Space Survivability of Main-Chain and Side-Chain POSS-Kapton Polyimides. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2009/01/05/ VL - 1087 IS - 1 M3 - Article SP - 505 EP - 518 PB - American Institute of Physics SN - 0094243X AB - Kapton® polyimde (PI) is extensively used in solar arrays, spacecraft thermal blankets, and space inflatable structures. Upon exposure to atomic oxygen (AO) in low Earth orbit (LEO), Kapton® is severely degraded. An effective approach to prevent this erosion is chemically bonding polyhedral oligomeric silsesquioxane (POSS) into the polyimide matrix by copolymerization of POSS-diamine with the polyimide monomers. POSS is a silicon and oxygen cage-like structure surrounded by organic groups and can be polymerizable. The copolymerization of POSS provides Si and O in the polymer matrix on the nano level. During POSS polyimide exposure to atomic oxygen, organic material is degraded and a silica passivation layer is formed. This silica layer protects the underlying polymer from further degradation. Ground-based studies and MISSE-1 and MISSE-5 flight results have shown that POSS polyimides are resistant to atomic-oxygen attack in LEO. In fact, 3.5 wt% Si8O11 main-chain POSS polyimide eroded about 2 μm during the 3.9 year flight in LEO, whereas 32 μm of 0 wt% POSS polyimide would have eroded within 4 mos. The atomic-oxygen exposure of main-chain POSS polyimides and new side-chain POSS polyimides has shown that copolymerized POSS imparts similar AO resistance to polyimide materials regardless of POSS monomer structure. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles KW - ASTRONAUTICS KW - NAVIGATION (Astronautics) KW - EARTH (Planet) KW - ASTRONOMICAL unit KW - ORBIT KW - Hyperthermal atomic oxygen KW - low Earth orbit KW - polyhedral oligomeric silsesquioxane KW - polyimide KW - polymer erosion KW - POSS KW - space environment N1 - Accession Number: 36332238; Tomczak, Sandra J. 1 Wright, Michael E. 2 Guenthner, Andrew J. 2 Pettys, Brian J. 2 Brunsvold, Amy L. 3 Knight, Casey 3 Minton, Timothy K. 3 Vij, Vandana 4 McGrath, Laura M. 4 Mabry, Joseph M. 1; Affiliation: 1: AFRL/RZSM, Materials Applications Branch, Air Force Research Laboratory 10 E. Saturn Blvd., Bldg. 8451, Edwards AFB, CA 93524 USA 2: Research and Engineering Sciences Department, Chemistry Division NAVAIR-US NAVY, China Lake, CA 93555 USA 3: Department of Chemistry and Biochemistry, Montana State University 103 Chem/Biochem Bldg., Bozeman, MT 59717 USA 4: ERC Incorporated, Materials Applications Branch, Air Force Research Laboratory 10 E. Saturn Blvd., Bldg. 8451, Edwards AFB, CA 93524 USA; Source Info: 1/5/2009, Vol. 1087 Issue 1, p505; Subject Term: SPACE vehicles; Subject Term: ASTRONAUTICS; Subject Term: NAVIGATION (Astronautics); Subject Term: EARTH (Planet); Subject Term: ASTRONOMICAL unit; Subject Term: ORBIT; Author-Supplied Keyword: Hyperthermal atomic oxygen; Author-Supplied Keyword: low Earth orbit; Author-Supplied Keyword: polyhedral oligomeric silsesquioxane; Author-Supplied Keyword: polyimide; Author-Supplied Keyword: polymer erosion; Author-Supplied Keyword: POSS; Author-Supplied Keyword: space environment; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 14p; Illustrations: 6 Diagrams, 3 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.3076863 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36332238&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fickus, Matthew AU - Mixon, Dustin G. T1 - Isotropic moments over integer lattices JO - Applied & Computational Harmonic Analysis JF - Applied & Computational Harmonic Analysis Y1 - 2009/01// VL - 26 IS - 1 M3 - Article SP - 77 EP - 96 SN - 10635203 AB - Abstract: Many modern edge and corner detection algorithms use moment transforms, which convolve images with tensor-valued filters, namely the product of a window function with a monomial. Over continuous domains, one may easily show that such transforms are isotropic. We generalize these continuous results to digital images, that is, to functions over the canonical integer lattice in a finite-dimensional real space. In particular, we first introduce a mathematically well-behaved method for the dilation and rotation of digital images, and then show these operations commute with discrete moment transforms in a manner consistent with the continuous results. [Copyright &y& Elsevier] AB - Copyright of Applied & Computational Harmonic Analysis is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DILATION theory (Operator theory) KW - LATTICE theory KW - ABSTRACT algebra KW - HARMONIC analysis (Mathematics) KW - Dilations KW - Discrete KW - Edges KW - Images KW - Isotropic KW - Moments KW - Rotations N1 - Accession Number: 35291290; Fickus, Matthew 1; Email Address: matthew.fickus@afit.edu Mixon, Dustin G. 2; Affiliation: 1: Department of Mathematics and Statistics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433, USA 2: Radio Frequency Radiation Branch, Directed Energy Bioeffects Division, Human Effectiveness Directorate, Air Force Research Laboratory, Brooks City-Base, TX 78235, USA; Source Info: Jan2009, Vol. 26 Issue 1, p77; Subject Term: DILATION theory (Operator theory); Subject Term: LATTICE theory; Subject Term: ABSTRACT algebra; Subject Term: HARMONIC analysis (Mathematics); Author-Supplied Keyword: Dilations; Author-Supplied Keyword: Discrete; Author-Supplied Keyword: Edges; Author-Supplied Keyword: Images; Author-Supplied Keyword: Isotropic; Author-Supplied Keyword: Moments; Author-Supplied Keyword: Rotations; Number of Pages: 20p; Document Type: Article L3 - 10.1016/j.acha.2008.02.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35291290&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhenning Yu AU - Loon-Seng Tan AU - Fossum, Eric T1 - Aryl ether synthesis via Ullmann coupling in non-polar solvents: effect of ligand, counterion, and base. JO - ARKIVOC: Online Journal of Organic Chemistry JF - ARKIVOC: Online Journal of Organic Chemistry Y1 - 2009/01// M3 - Article SP - 255 EP - 265 SN - 15517004 AB - An Ullmann coupling route to diaryl ethers, for use in non-polar solvents, employing 5 mol % of an air stable Cu (I) catalyst, CuIPPh3, has been explored. The O-arylation process occurred smoothly in non-polar solvents, toluene or xylene, with the inexpensive base K2CO3. The highest yields were achieved with electron poor aryl bromides and electron rich phenols. The reactions were highly selective toward bromide over chloride in multiple halogenated aromatics. [ABSTRACT FROM AUTHOR] AB - Copyright of ARKIVOC: Online Journal of Organic Chemistry is the property of Arkat USA Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COUPLINGS (Gearing) KW - ARYLATION KW - COPPER KW - LIGANDS KW - ETHERS KW - XYLENE KW - BROMIDES KW - PHENOLS KW - ELECTRONS KW - aryl ether synthesis KW - copper (I) catalyst KW - O-arylation KW - Ullmann Coupling N1 - Accession Number: 54321290; Zhenning Yu 1 Loon-Seng Tan 2 Fossum, Eric 1; Email Address: eric.fossum@wright.edu; Affiliation: 1: Department of Chemistry, Wright State University , 3640 Colonel Glenn Hwy., Dayton, OH, 45435, USA 2: Nanostructured & Biological Materials Branch, Materials & Manufacturing Directorate,AFRL/RXBN, Air Force Research Laboratory, 2941 Hobson Way Wright-Patterson Air Force Base, Dayton, OH 45433-7750, USA; Source Info: 2009, p255; Subject Term: COUPLINGS (Gearing); Subject Term: ARYLATION; Subject Term: COPPER; Subject Term: LIGANDS; Subject Term: ETHERS; Subject Term: XYLENE; Subject Term: BROMIDES; Subject Term: PHENOLS; Subject Term: ELECTRONS; Author-Supplied Keyword: aryl ether synthesis; Author-Supplied Keyword: copper (I) catalyst; Author-Supplied Keyword: O-arylation; Author-Supplied Keyword: Ullmann Coupling; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 333619 Other engine and power transmission equipment manufacturing; NAICS/Industry Codes: 333613 Mechanical Power Transmission Equipment Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 11p; Illustrations: 2 Diagrams, 5 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=54321290&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thomas Corke AU - Martiqua Post AU - Dmitriy Orlov T1 - Single dielectric barrier discharge plasma enhanced aerodynamics: physics, modeling and applications. JO - Experiments in Fluids JF - Experiments in Fluids Y1 - 2009/01// VL - 46 IS - 1 M3 - Article SP - 1 EP - 26 SN - 07234864 AB - Abstract  The term “plasma actuator” has been a part of the fluid dynamics flow control vernacular for more than a decade. A particular type of plasma actuator that has gained wide use is based on a single dielectric barrier discharge (SDBD) mechanism that has desirable features for use in air at atmospheric pressures. For these actuators, the mechanism of flow control is through a generated body force vector that couples with the momentum in the external flow. The body force can be derived from first principles and the plasma actuator effect can be easily incorporated into flow solvers so that their placement and operation can be optimized. They have been used in a wide range of applications that include bluff body wake control; lift augmentation and separation control on a variety of lifting surfaces ranging from fixed wings with various degrees of sweep, wind turbine rotors and pitching airfoils simulating helicopter rotors; flow separation and tip-casing clearance flow control to reduce losses in turbines, to control flow surge and stall in compressors; and in exciting instabilities in boundary layers at subsonic to supersonic Mach numbers for turbulent transition control. New applications continue to appear through programs in a growing number of US universities and government laboratories, as well as in Germany, France, England, Netherland, Russia, Japan and China. This paper provides an overview of the physics, design and modeling of SDBD plasma actuators. It then presents their use in a number of applications that includes both numerical flow simulations and experiments together. [ABSTRACT FROM AUTHOR] AB - Copyright of Experiments in Fluids is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HELICOPTERS -- Aerodynamics KW - FLUID dynamics KW - DIELECTRICS KW - ACTUATORS KW - ROTORS (Helicopters) KW - TURBINES -- Aerodynamics N1 - Accession Number: 35743925; Thomas Corke 1 Martiqua Post 2 Dmitriy Orlov 2; Affiliation: 1: University of Notre Dame Aerospace and Mechanical Engineering Department, Center for Flow Physics and Control Notre Dame IN USA 2: US Air Force Academy Colorado Springs CO USA; Source Info: Jan2009, Vol. 46 Issue 1, p1; Subject Term: HELICOPTERS -- Aerodynamics; Subject Term: FLUID dynamics; Subject Term: DIELECTRICS; Subject Term: ACTUATORS; Subject Term: ROTORS (Helicopters); Subject Term: TURBINES -- Aerodynamics; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 26p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35743925&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carroll, Matthew B. AU - Holmes, Robert T1 - SAFETY OF ANTI-TUMOR NECROSIS FACTOR (ANTI-TNF) THERAPY IN PATIENTS WITH CHRONIC HEPATITIS B. JO - Hepatitis B Annual JF - Hepatitis B Annual Y1 - 2009/01// VL - 6 M3 - Article SP - 89 EP - 109 SN - 09729747 AB - The anti-tumor necrosis factor (TNF) agents are a class of medications which have given clinicians a new level of control over inflammatory illnesses that was previously unattainable with older disease modifying agents. Though each medication has unique molecular differences, they all have as their specific target the proinflammatory cytokine TNF-α. With the great improvements provided by the anti-TNF agents though has come a new spectrum of side effects. On the basis of the importance of TNF-α in granuloma formation, neutralization of TNF-α has led to reactivation of latent infections, the most notable being Mycobacterium tuberculosis. Another infectious agent that can elude eradication and enter a latent state, reactivating when the immune system is depressed, is the hepatitis B virus (HBV). Inhibition of TNF-α could also lead to immune suppression and reactivation of the virus much like that experienced with the reactivation of TB. The purpose of this article is to review the current medical literature for cases where anti-TNF agents were used to treat an inflammatory illness such as rheumatoid arthritis or Crohn's disease in patients chronically infected with HBV. Additionally, the role of TNF-α in HBV infection is explored, the differences in the anti-TNF agents are examined, and guidelines regarding the screening for and prophylaxis of HBV are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Hepatitis B Annual is the property of Medknow Publications & Media Pvt. Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTINEOPLASTIC agents KW - TUMOR necrosis factor KW - HEPATITIS B KW - DRUGS -- Side effects KW - MYCOBACTERIUM tuberculosis KW - RHEUMATOID arthritis KW - CROHN'S disease KW - TREATMENT KW - Crohn's disease KW - hepatitis B virus KW - rheumatoid arthritis KW - tumor necrosis factor-α N1 - Accession Number: 59176716; Carroll, Matthew B. 1; Email Address: matthew.carroll.1@us.af.mil Holmes, Robert 1; Affiliation: 1: United States Air Force, 301 Fisher Street, Keesler AFB, MS, USA; Source Info: 2009, Vol. 6, p89; Subject Term: ANTINEOPLASTIC agents; Subject Term: TUMOR necrosis factor; Subject Term: HEPATITIS B; Subject Term: DRUGS -- Side effects; Subject Term: MYCOBACTERIUM tuberculosis; Subject Term: RHEUMATOID arthritis; Subject Term: CROHN'S disease; Subject Term: TREATMENT; Author-Supplied Keyword: Crohn's disease; Author-Supplied Keyword: hepatitis B virus; Author-Supplied Keyword: rheumatoid arthritis; Author-Supplied Keyword: tumor necrosis factor-α; Number of Pages: 21p; Document Type: Article L3 - 10.4103/0972-9747.76907 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59176716&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Camberos, José A. AU - Moorhouse, David J. T1 - Systems Engineering in Terms of Exergy. JO - International Journal of Aerospace Engineering JF - International Journal of Aerospace Engineering Y1 - 2009/01// M3 - Article SP - 1 EP - 7 SN - 16875966 AB - We address the design of a flight vehicle from the viewpoint of a system of systems and we discuss the integration of the individual technical disciplines. Then a conceptual fundamental methodology and tools required for the analysis, design, and optimization of aerospace vehicles in terms of the efficient use of on-board energy are discussed. This suggests changing the design paradigm to the optimization of a system of energy systems. We propose a foundation for system-level design with optimization based on minimum exergy destruction. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aerospace Engineering is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYSTEMS engineering KW - SYSTEMS design KW - EXERGY KW - AIRPLANES -- Design & construction KW - VEHICLES -- Design & construction KW - ENERGY consumption KW - CONFIGURATIONS (Geometry) KW - MOMENTUM (Mechanics) KW - METHODOLOGY N1 - Accession Number: 55336947; Camberos, José A. 1; Email Address: jose.cambero@wpafb.af.mil Moorhouse, David J. 1; Affiliation: 1: Multidisciplinary Technologies Center, Air Vehicles Directorate U. S. Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: 2009, Special section p1; Subject Term: SYSTEMS engineering; Subject Term: SYSTEMS design; Subject Term: EXERGY; Subject Term: AIRPLANES -- Design & construction; Subject Term: VEHICLES -- Design & construction; Subject Term: ENERGY consumption; Subject Term: CONFIGURATIONS (Geometry); Subject Term: MOMENTUM (Mechanics); Subject Term: METHODOLOGY; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 7p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1155/2009/735680 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55336947&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Doty, John H. AU - Camberos, José A. AU - Moorhouse, David J. T1 - Benefits of Exergy-Based Analysis for Aerospace Engineering Applications--Part I. JO - International Journal of Aerospace Engineering JF - International Journal of Aerospace Engineering Y1 - 2009/01// M3 - Article SP - 1 EP - 11 SN - 16875966 AB - This paper compares the analysis of systems from two different perspectives: an energy-based focus and an exergy-based focus. A complex system was simply modeled as interacting thermodynamic systems to illustrate the differences in analysis methodologies and results. The energy-based analysis had combinations of calculated states that are infeasible. On the other hand, the exergy-based analyses only allow feasible states. More importantly, the exergy-based analyses provide clearer insight to the combination of operating conditions for optimum system-level performance. The results strongly suggest changing the analysis/design paradigm used in aerospace engineering from energy-based to exergy-based. This methodology shift is even more critical in exploratory research and development where previous experience may not be available to provide guidance. Although the models used herein may appear simplistic, the message is very powerful and extensible to higher-fidelity models: the 1st Law is only a necessary condition for design, whereas the 1st and 2nd Laws provide the sufficiency condition. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aerospace Engineering is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROSPACE engineering -- Research KW - SPACE vehicles -- Design & construction KW - SPACE vehicles -- Thermodynamics KW - SYSTEM analysis KW - EXERGY KW - HEAT transfer KW - ENERGY dissipation KW - HEAT engines KW - ENERGY conservation N1 - Accession Number: 55336943; Doty, John H. 1; Email Address: john.doty@notes.udayton.edu Camberos, José A. 2 Moorhouse, David J. 2; Affiliation: 1: Department of Engineering Management & Systems, University of Dayton, Dayton, OH 45469, USA 2: Multidisciplinary Science & Technologies Center, U.S. Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: 2009, Special section p1; Subject Term: AEROSPACE engineering -- Research; Subject Term: SPACE vehicles -- Design & construction; Subject Term: SPACE vehicles -- Thermodynamics; Subject Term: SYSTEM analysis; Subject Term: EXERGY; Subject Term: HEAT transfer; Subject Term: ENERGY dissipation; Subject Term: HEAT engines; Subject Term: ENERGY conservation; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 11p; Illustrations: 3 Diagrams, 5 Charts, 3 Graphs; Document Type: Article L3 - 10.1155/2009/409529 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55336943&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thompson, R. AU - Wehling, M. AU - Evers, J. AU - Dixon, W. T1 - Body rate decoupling using haltere mid-stroke measurements for inertial flight stabilization in Diptera. JO - Journal of Comparative Physiology A: Neuroethology, Sensory, Neural & Behavioral Physiology JF - Journal of Comparative Physiology A: Neuroethology, Sensory, Neural & Behavioral Physiology Y1 - 2009/01// VL - 195 IS - 1 M3 - Article SP - 99 EP - 112 SN - 03407594 AB - Halteres, the modified rear wings of Diptera, have long been recognized as sensory organs necessary for basic flight stability. These organs, which act as vibrating structure gyroscopes, are known to sense strains proportional to Coriolis accelerations. While compensatory responses have been demonstrated that indicate the ability of insects to distinguish all components of the body rate vector, the specific mechanism by which the halteres are able to decouple the body rates has not been clearly understood. The research documented in this report describes a potential mechanism, using averaged strain and strain rate at the center of the haltere stroke, to decouple the inertial rate components. Through dynamic simulation of a nonlinear model of the haltere 3-dimensional trajectory, this straightforward method was demonstrated to provide an accurate means of generating signals that are proportional to three orthogonal body rate components. Errors associated with residual nonlinearity and rate-coupling were quantified for a bilaterally reconstructed body rate vector over a full range of pitch and yaw rates and two roll rate conditions. Models that are compatible with insect physiology are proposed for performing necessary signal averaging and bilateral processing. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Comparative Physiology A: Neuroethology, Sensory, Neural & Behavioral Physiology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIPTERA KW - INSECT flight KW - SENSORY evaluation KW - GYROSCOPES KW - PHYSIOLOGY KW - Campaniform sensilla KW - Diptera KW - Flight stability KW - Haltere KW - Strain rate N1 - Accession Number: 36145678; Thompson, R. 1; Email Address: thompsra@ufl.edu Wehling, M. 1 Evers, J. 1 Dixon, W. 2; Affiliation: 1: Air Force Research Laboratory , AFRL/RWGI , Eglin AFB USA 2: Department of Mechanical and Aerospace Engineering , University of Florida , Gainesville USA; Source Info: Jan2009, Vol. 195 Issue 1, p99; Subject Term: DIPTERA; Subject Term: INSECT flight; Subject Term: SENSORY evaluation; Subject Term: GYROSCOPES; Subject Term: PHYSIOLOGY; Author-Supplied Keyword: Campaniform sensilla; Author-Supplied Keyword: Diptera; Author-Supplied Keyword: Flight stability; Author-Supplied Keyword: Haltere; Author-Supplied Keyword: Strain rate; Number of Pages: 14p; Illustrations: 5 Diagrams, 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1007/s00359-008-0388-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36145678&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kyung Yu AU - Christin Grabinski AU - Amanda Schrand AU - Richard Murdock AU - Wei Wang AU - Baohua Gu AU - John Schlager AU - Saber Hussain T1 - Toxicity of amorphous silica nanoparticles in mouse keratinocytes. JO - Journal of Nanoparticle Research JF - Journal of Nanoparticle Research Y1 - 2009/01// VL - 11 IS - 1 M3 - Article SP - 15 EP - 24 SN - 13880764 AB - Abstract  The present study was designed to examine the uptake, localization, and the cytotoxic effects of well-dispersed amorphous silica nanoparticles in mouse keratinocytes (HEL-30). Mouse keratinocytes were exposed for 24 h to various concentrations of amorphous silica nanoparticles in homogeneous suspensions of average size distribution (30, 48, 118, and 535 nm SiO2) and then assessed for uptake and biochemical changes. Results of transmission electron microscopy revealed all sizes of silica were taken up into the cells and localized into the cytoplasm. The lactate dehydrogenase (LDH) assay shows LDH leakage was dose- and size-dependent with exposure to 30 and 48 nm nanoparticles. However, no LDH leakage was observed for either 118 or 535 nm nanoparticles. The mitochondrial viability assay (MTT) showed significant toxicity for 30 and 48 nm at high concentrations (100 μg/mL) compared to the 118 and 535 nm particles. Further studies were carried out to investigate if cellular reduced GSH and mitochondria membrane potential are involved in the mechanism of SiO2 toxicity. The redox potential of cells (GSH) was reduced significantly at concentrations of 50, 100, and 200 μg/mL at 30 nm nanoparticle exposures. However, silica nanoparticles larger than 30 nm showed no changes in GSH levels. Reactive oxygen species (ROS) formation did not show any significant change between controls and the exposed cells. In summary, amorphous silica nanoparticles below 100 nm induced cytotoxicity suggest size of the particles is critical to produce biological effects. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nanoparticle Research is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - SILICON compounds KW - INORGANIC compounds KW - SILICON polymers KW - SILANE compounds KW - SILICIDES KW - SILICA N1 - Accession Number: 35912224; Kyung Yu 1 Christin Grabinski 1 Amanda Schrand 1 Richard Murdock 1 Wei Wang 2 Baohua Gu 2 John Schlager 1 Saber Hussain 1; Affiliation: 1: Wright-Patterson AFB Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force Research Laboratory Dayton OH USA 2: Oak Ridge National Laboratory Environmental Sciences Division Oak Ridge TN USA; Source Info: Jan2009, Vol. 11 Issue 1, p15; Subject Term: NANOPARTICLES; Subject Term: SILICON compounds; Subject Term: INORGANIC compounds; Subject Term: SILICON polymers; Subject Term: SILANE compounds; Subject Term: SILICIDES; Subject Term: SILICA; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 212322 Industrial Sand Mining; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35912224&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fechine, P.B.A. AU - Silva, E.N. AU - de Menezes, A.S. AU - Derov, J. AU - Stewart, J.W. AU - Drehman, A.J. AU - Vasconcelos, I.F. AU - Ayala, A.P. AU - Cardoso, L.P. AU - Sombra, A.S.B. T1 - Synthesis, structure and vibrational properties of GdIG X :YIG1−X ferrimagnetic ceramic composite JO - Journal of Physics & Chemistry of Solids JF - Journal of Physics & Chemistry of Solids Y1 - 2009/01// VL - 70 IS - 1 M3 - Article SP - 202 EP - 209 SN - 00223697 AB - Abstract: Y3Fe5O12 (YIG) crystal has many attractive characteristics, such as low dielectric loss, narrow resonance linewidth in microwave region and also possesses a good saturated magnetization value. Composite technology in general sets out to combine materials in such a way that the properties of the composite are the optimum for a particular application. The different materials work together to give a composite of unique properties. In this work, we present the preparation procedure (obtaining) of the GdIG X :YIG1−X ferrimagnetic ceramic matrix composite by mechanical alloying and calcinations. Besides that, we study its properties by X-ray powder diffraction, infrared, Micro-Raman, 57Fe Mössbauer spectroscopy and hysteresis loop measurements. [Copyright &y& Elsevier] AB - Copyright of Journal of Physics & Chemistry of Solids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - YTTRIUM iron garnet KW - FERRIMAGNETISM KW - HYSTERESIS loop KW - MAGNETIZATION KW - X-ray diffraction KW - MOSSBAUER spectroscopy N1 - Accession Number: 35929485; Fechine, P.B.A. 1,2,3; Email Address: fechine@ufc.br Silva, E.N. 4 de Menezes, A.S. 5 Derov, J. 6 Stewart, J.W. 6 Drehman, A.J. 6 Vasconcelos, I.F. 7 Ayala, A.P. 4 Cardoso, L.P. 5 Sombra, A.S.B. 3; Affiliation: 1: Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará—UFC, Campus do Pici, CP 12100, CEP 60451-970 Fortaleza, CE, Brazil 2: Departamento de Química Orgânica e Inorgânica—UFC, Brazil 3: Laboratório de Telecomunicações e Ciência e Engenharia de Materiais (LOCEM), Departamento de Física, Universidade Federal do Ceará–UFC, Brazil 4: Departamento de Física, Universidade Federal do Ceará 5: IFGW, Universidade Estadual de Campinas—UNICAMP, CP 6165, 13083-970 Campinas, SP, Brazil 6: Air Force Research Laboratory, Sensors Directorate, 80 Scott Drive, Hanscom AFB, MA 01731, USA 7: Departmento de Engenharia Metalurgica e de Materiais, Universidade Federal do Ceara, Fortaleza, Ceara, CEP 60455-760 Brazil; Source Info: Jan2009, Vol. 70 Issue 1, p202; Subject Term: YTTRIUM iron garnet; Subject Term: FERRIMAGNETISM; Subject Term: HYSTERESIS loop; Subject Term: MAGNETIZATION; Subject Term: X-ray diffraction; Subject Term: MOSSBAUER spectroscopy; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jpcs.2008.10.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35929485&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blake, William B. AU - Johnson, Arik F. T1 - Assessment of Straight Tapered Geometry Approximations of Raked-Tip Wings. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2009/01//Jan/Feb2009 VL - 46 IS - 1 M3 - Article SP - 103 EP - 111 SN - 00224650 AB - Straight tapered geometry approximations to wings with raked tips are presented. Only wings with breaks in the trailing-edge sweep are considered. Comparisons are made with predictions from a vortex-lattice code for a series of uncambered, untwisted wing planforms with raked tips and 10 straight tapered approximations to those planforms. Limited comparisons with experimental data are also shown. Lift-curve slope, aerodynamic center, lateral center of pressure, roll damping and lateral stability are compared for 47 planforms. The most accurate method maintained the area, span, leading-edge sweep, and mean aerodynamic chord of the raked-tip planform, generating a new root and tip chord. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GEOMETRY KW - VORTEX methods KW - AERODYNAMICS KW - BOMBS KW - CURVES KW - FLUID dynamics N1 - Accession Number: 36979541; Blake, William B. 1 Johnson, Arik F. 2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: University of Maryland, College Park, Maryland 20714; Source Info: Jan/Feb2009, Vol. 46 Issue 1, p103; Subject Term: GEOMETRY; Subject Term: VORTEX methods; Subject Term: AERODYNAMICS; Subject Term: BOMBS; Subject Term: CURVES; Subject Term: FLUID dynamics; NAICS/Industry Codes: 332993 Ammunition (except Small Arms) Manufacturing; Number of Pages: 9p; Illustrations: 6 Diagrams, 2 Charts, 14 Graphs; Document Type: Article L3 - 10.2514/1.36817 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36979541&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cheng, Zhiqing AU - Pellettiere, Joseph A. AU - Crandall, Jeff R. AU - Pilkey, Walter D. T1 - Optimal occupant kinematics and crash pulse for automobile frontal impact. JO - Shock & Vibration JF - Shock & Vibration Y1 - 2009/01// VL - 16 IS - 1 M3 - Article SP - 61 EP - 73 PB - Hindawi Publishing Corporation SN - 10709622 AB - Based on a lumped-parameter model of the occupant-vehicle system, optimal kinematics of the occupant in frontal impact are investigated. It is found that for the minimization of the peak occupant deceleration, the optimal kinematics move the occupant at a constant deceleration. Based on this the optimal vehicle crash pulse is investigated. The optimal crash pulse for passive restraint systems is found to be: a positive impulse at the onset, an immediate plunge followed by a gradual rebound, and finally a positive level period. The relation of the peak occupant deceleration to the impact speed, crash deformation, and vehicle interior rattlespace is established. The optimal crash pulse for active and pre-acting restraint systems is discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Shock & Vibration is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACCELERATION (Mechanics) KW - KINEMATICS KW - ACCELERATION waves KW - AUTOMOBILES -- Crashworthiness KW - AUTOMOBILES -- Crash tests KW - AUTOMOBILES -- Occupant restraint systems KW - AUTOMOBILES -- Safety appliances KW - Automobile front impact KW - optimal crash pulse KW - optimal occupant kinematics KW - restraint systems N1 - Accession Number: 35541995; Cheng, Zhiqing 1 Pellettiere, Joseph A. 2 Crandall, Jeff R. 3 Pilkey, Walter D. 3; Affiliation: 1: Infoscitex, 4027 Colonel Glenn Highway, Suite 210, Dayton, OH 45431, USA 2: Human Effectiveness Directorate, Air Force Research Laboratory, Dayton, OH 45433, USA 3: Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, VA 22904, USA; Source Info: 2009, Vol. 16 Issue 1, p61; Subject Term: ACCELERATION (Mechanics); Subject Term: KINEMATICS; Subject Term: ACCELERATION waves; Subject Term: AUTOMOBILES -- Crashworthiness; Subject Term: AUTOMOBILES -- Crash tests; Subject Term: AUTOMOBILES -- Occupant restraint systems; Subject Term: AUTOMOBILES -- Safety appliances; Author-Supplied Keyword: Automobile front impact; Author-Supplied Keyword: optimal crash pulse; Author-Supplied Keyword: optimal occupant kinematics; Author-Supplied Keyword: restraint systems; Number of Pages: 13p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35541995&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, C. O. AU - Luhmann, J. G. AU - Odstrcil, D. AU - MacNeice, P. J. AU - de Pater, I. AU - Riley, P. AU - Arge, C. N. T1 - The Solar Wind at 1 AU During the Declining Phase of Solar Cycle 23: Comparison of 3D Numerical Model Results with Observations. JO - Solar Physics JF - Solar Physics Y1 - 2009/01// VL - 254 IS - 1 M3 - Article SP - 155 EP - 183 PB - Springer Science & Business Media B.V. SN - 00380938 AB - We present results of solar-wind parameters generated by 3D MHD models. The ENLIL inner-heliosphere solar-wind model together with the MAS or Wang – Sheeley – Arge (WSA) coronal models, describe the steady solar-wind stream structure and its origins in the solar corona. The MAS/ENLIL and WSA/ENLIL models have been tuned to provide a simulation of plasma moments as well as interplanetary magnetic-field magnitude and polarity in the absence of disturbances from coronal transients. To investigate how well the models describe the ambient solar wind structure from the Sun out to 1 AU, the model results are compared to solar-wind measurements from the ACE spacecraft. We find that there is an overall agreement between the observations and the model results for the general large-scale solar-wind structures and trends, such as the timing of the high-density structures and the low- and high-speed winds, as well as the magnetic sector structures. The time period of our study is the declining phase of Solar Cycle 23 when the solar activity involves well-defined stream structure, which is ideal for testing a quasi-steady-state solar-wind model. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR corona KW - SOLAR atmosphere KW - CORONAL holes (Astronomy) KW - MAGNETIC fields KW - SOLAR wind KW - Interplanetary KW - Magnetic fields KW - Magnetic fields, Interplanetary KW - Magnetic fields, Models KW - Models KW - Observations KW - Solar Cycle KW - Solar Cycle, Models KW - Solar cycle, Observations KW - Solar Wind N1 - Accession Number: 35622867; Lee, C. O. 1,2; Email Address: clee@ssl.berkeley.edu Luhmann, J. G. 1; Email Address: jgluhman@ssl.berkeley.edu Odstrcil, D. 3; Email Address: Dusan.Odstrcil@noaa.gov MacNeice, P. J. 4; Email Address: Peter.J.MacNeice@nasa.gov de Pater, I. 2; Email Address: imke@astron.berkeley.edu Riley, P. 5; Email Address: pete.riley@saic.com Arge, C. N. 6; Email Address: nick.arge@kirtland.af.mil; Affiliation: 1: Space Sciences Laboratory, University of California, Berkeley, CA, USA 2: Department of Earth and Planetary Science, University of California, Berkeley, CA, USA 3: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA 4: Department of Physics, Drexel University, Philadelphia, PA, USA 5: Science Applications International Corporation, San Diego, CA, USA 6: Air Force Research Laboratory/Space Vehicles Directorate, Kirtland Air Force Base, NM, USA; Source Info: Jan2009, Vol. 254 Issue 1, p155; Subject Term: SOLAR corona; Subject Term: SOLAR atmosphere; Subject Term: CORONAL holes (Astronomy); Subject Term: MAGNETIC fields; Subject Term: SOLAR wind; Author-Supplied Keyword: Interplanetary; Author-Supplied Keyword: Magnetic fields; Author-Supplied Keyword: Magnetic fields, Interplanetary; Author-Supplied Keyword: Magnetic fields, Models; Author-Supplied Keyword: Models; Author-Supplied Keyword: Observations; Author-Supplied Keyword: Solar Cycle; Author-Supplied Keyword: Solar Cycle, Models; Author-Supplied Keyword: Solar cycle, Observations; Author-Supplied Keyword: Solar Wind; Number of Pages: 29p; Illustrations: 1 Diagram, 20 Graphs; Document Type: Article L3 - 10.1007/s11207-008-9280-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35622867&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - C.C. Rasmussen AU - R.A. Canfield AU - M. Blair T1 - Optimization process for configuration of flexible joined-wing. JO - Structural & Multidisciplinary Optimization JF - Structural & Multidisciplinary Optimization Y1 - 2009/01// VL - 37 IS - 3 M3 - Article SP - 265 EP - 277 SN - 1615147X AB - Abstract  An optimized configuration design utilizing both structural and aerodynamic analyses of a flexible joined-wing configuration is presented in this paper. The joined-wing aircraft concept fulfills a proposed long-endurance surveillance mission and incorporates a load-bearing antenna structure embedded in the wing skin. Aerodynamic, structural, and optimization analyses are completed a number of times. A range of joined-wing configurations were trimmed for critical flight conditions and then structurally optimized for trimmed flight and gust loads to achieve a minimum weight for each configuration. A response surface statistical analysis was then applied to determine optimal joined-wing aircraft configurations. The response surface showed trends in the design of lightweight joined-wing aircraft. [ABSTRACT FROM AUTHOR] AB - Copyright of Structural & Multidisciplinary Optimization is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXPERIMENTAL design KW - CONFIGURATIONS (Geometry) KW - ATMOSPHERIC turbulence KW - TURBULENCE N1 - Accession Number: 35260973; C.C. Rasmussen 1 R.A. Canfield 1 M. Blair 2; Affiliation: 1: AFIT/ENY, Wright-Patterson AFB Air Force Institute of Technology, Department of Aeronautics and Astronautics 2950 Hobson Way Dayton OH 45433-7765 USA 2: AFRL/VA, Wright-Patterson AFB Air Force Research Laboratory, Air Vehicles Directorate 2130 Eighth Street Dayton OH 45433 USA; Source Info: Jan2009, Vol. 37 Issue 3, p265; Subject Term: EXPERIMENTAL design; Subject Term: CONFIGURATIONS (Geometry); Subject Term: ATMOSPHERIC turbulence; Subject Term: TURBULENCE; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35260973&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dimpfl, William L. AU - Wysong, Ingrid J. AU - Gimelshein, Sergey F. AU - Braunstein, Matthew AU - Bernstein, Lawrence S. T1 - Application of the Born-Mayer Potential with a Hard-Sphere Scattering Kernel to Rarefied Hyperthermal Gas Flow Modeling. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/12/31/ VL - 1084 IS - 1 M3 - Article SP - 323 EP - 328 PB - American Institute of Physics SN - 0094243X AB - Direct Simulation Monte Carlo (DSMC) modeling of spacecraft engine plume radiance in low earth orbit shows significant errors in plume size and shape. These errors are mainly due to deficiencies in extrapolating low energy (<1 eV) Variable Hard-Sphere (VHS) and Variable Soft-Sphere (VSS) collision models to hyperthermal collision energies (>1 eV) important in plume modeling. The VHS and VSS scattering treatments are based on repulsive inverse-power-law inter-particle potential energy functions, which are not adequate at hyperthermal energies. In this work, we integrate the more physically realistic and accurate repulsive Born-Mayer exponential-interaction potential into the DSMC framework. We introduce the new Extended Variable Hard-Sphere (EVHS) and Extended Variable Soft-Sphere (EVSS) collision models, which significantly improve DSMC modeling at hyperthermal energies without an added computational penalty. Comparisons between VHS and EVHS modeling and data for argon over a range of energies and high altitude plume radiance data demonstrate the validity of the new treatment. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS flow KW - MONTE Carlo method KW - NOBLE gases KW - ORBITS KW - ARGON KW - DSMC KW - hyperthermal plume flows KW - intermolecular potential KW - scattering KW - VHS N1 - Accession Number: 36053976; Dimpfl, William L. 1 Wysong, Ingrid J. 2 Gimelshein, Sergey F. 3 Braunstein, Matthew 4 Bernstein, Lawrence S. 4; Affiliation: 1: The Aerospace Corporation, PO Box 92957, Los Angeles, CA 90009, USA 2: Air Force Research Laboratory, Edwards AFB, CA 93524, USA 3: ERC Inc., Edwards AFB, CA 93524, USA 4: Spectral Sciences, Inc., 4 Fourth Street, Burlington, MA 01803, USA; Source Info: 12/31/2008, Vol. 1084 Issue 1, p323; Subject Term: GAS flow; Subject Term: MONTE Carlo method; Subject Term: NOBLE gases; Subject Term: ORBITS; Subject Term: ARGON; Author-Supplied Keyword: DSMC; Author-Supplied Keyword: hyperthermal plume flows; Author-Supplied Keyword: intermolecular potential; Author-Supplied Keyword: scattering; Author-Supplied Keyword: VHS; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 6p; Illustrations: 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1063/1.3076494 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36053976&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Olliges, J. D. AU - Ketsdever, A. D. AU - Stein, W. B. AU - Alexeenko, A. A. AU - Hrbud, I. T1 - Experimental and Computational Investigation of a RF Plasma Micro-Thruster. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/12/31/ VL - 1084 IS - 1 M3 - Article SP - 863 EP - 870 PB - American Institute of Physics SN - 0094243X AB - A prototype RF plasma micro-thruster has been investigated numerically and experimentally. The experimental results were obtained on a thrust stand capable of micro-Newton resolution. Thrust and mass flow (hence specific impulse) were measured for an argon propellant at mass flows ranging from 0.4 to 5.5 mg/s. An increase over the cold gas thrust of up to 20% was observed for a discharge frequency of 100 MHz and an input power of 77 W. Propulsive efficiency was seen to increase both experimentally and numerically for increasing mass flow and decreasing discharge frequency. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARGON KW - NOBLE gases KW - COLD gases KW - GASES KW - MATTER -- Properties KW - DSMC KW - Micropropulsion KW - plasma modeling KW - RF plasma thruster N1 - Accession Number: 36053880; Olliges, J. D. 1 Ketsdever, A. D. 2 Stein, W. B. 3 Alexeenko, A. A. 3 Hrbud, I. 3; Affiliation: 1: University of Southern California, Aerospace and Mechanical Engineering, Los Angeles, CA 90089 2: Air Force Research Laboratory, Edwards AFB, CA 93524 3: Purdue University, School of Aeronautical and Astronautical Engineering, West Lafayette, IN 47907; Source Info: 12/31/2008, Vol. 1084 Issue 1, p863; Subject Term: ARGON; Subject Term: NOBLE gases; Subject Term: COLD gases; Subject Term: GASES; Subject Term: MATTER -- Properties; Author-Supplied Keyword: DSMC; Author-Supplied Keyword: Micropropulsion; Author-Supplied Keyword: plasma modeling; Author-Supplied Keyword: RF plasma thruster; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 8p; Illustrations: 1 Color Photograph, 1 Diagram, 9 Graphs; Document Type: Article L3 - 10.1063/1.3076596 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36053880&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hollkamp, Joseph J. AU - Gordon, Robert W. T1 - Reduced-order models for nonlinear response prediction: Implicit condensation and expansion JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2008/12/23/ VL - 318 IS - 4/5 M3 - Article SP - 1139 EP - 1153 SN - 0022460X AB - Abstract: Accurate prediction of the response of aircraft skins to acoustic loading is important in the design of future air vehicles. Direct time integration of full-order, nonlinear, finite element models may be accurate, but is computationally expensive. Much work has been reported in recent years on prediction methods, which reduce a finite element model to a reduced-order system of nonlinear modal equations. The major difference among the methods is the means by which induced membrane displacements are modeled. One method is the implicit condensation method where the effects of membrane displacements are condensed into the nonlinear stiffness terms of the bending equations. Membrane displacements are not explicitly modeled, so membrane basis vectors are not needed. However, the lack of membrane displacements prohibits the recovery of membrane stresses and strains from the standard finite element strain–displacement relationships. Here, the implicit condensation method is improved by adding a step to recover membrane displacements using an estimated membrane basis. Examples are given that demonstrate the viability of the proposed method. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOUND pressure KW - AIRCRAFT steel KW - FINITE element method KW - STRAINS & stresses (Mechanics) KW - MEMBRANES (Technology) KW - SEPARATION (Technology) N1 - Accession Number: 34530505; Hollkamp, Joseph J.; Email Address: Joseph.Hollkamp@wpafb.af.mil Gordon, Robert W. 1; Email Address: Robert.Gordon@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, AFRL/RBSM, 2790 D Street, Wright-Patterson AFB, OH 45433-7402, USA; Source Info: Dec2008, Vol. 318 Issue 4/5, p1139; Subject Term: SOUND pressure; Subject Term: AIRCRAFT steel; Subject Term: FINITE element method; Subject Term: STRAINS & stresses (Mechanics); Subject Term: MEMBRANES (Technology); Subject Term: SEPARATION (Technology); Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.jsv.2008.04.035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34530505&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hay, R. S. T1 - Monazite (monoclinic LaPO4) slip systems at room temperature. JO - Philosophical Magazine JF - Philosophical Magazine Y1 - 2008/12/21/ VL - 88 IS - 36 M3 - Article SP - 4243 EP - 4270 SN - 14786435 AB - Polycrystalline monazite (monoclinic LaPO4) was deformed by spherical indentation at room temperature. Slip systems were identified using TEM of thin sections prepared parallel and close to the indented surface. Dislocation Burgers vectors (b) were identified by Burgers circuit closure in high resolution TEM images, supplemented by diffraction contrast where possible. A total of 441 b determinations were made in 97 grains. The most common slip systems were [001]/(010), [100]/(010) and [010]/(100). Slip on (001) was less common. Many other less common slip systems and Burgers vectors were also identified, including b = [101], [101], [011], [110] and [111]. b = [101] dislocations dissociate into ½[101] partials, and b = [101] dislocations are inferred to dissociate to ½[101] partials, with a low energy stacking fault of ∼30 mJ/m2. b = [100] dislocations may dissociate into ¼[210] + ¼[210] partials. b = [010] may sometimes dissociate to ½[010] + ½[010] partials. Other types of partial dislocations were also observed and discussed. All partial dislocations were climb dissociated. The line energies of monazite dislocations and their partials were calculated, and stacking fault structures for partial dislocations are analyzed. Satisfaction of the Von Mises criterion for full ductility most likely involves [101]/(111) and 〈011〉/{011} or {111} slip, but other combinations that require both b = [101] and 〈011〉 or 〈110〉 are possible. If deformation twinning is active, slip systems with b = 〈011〉 or 〈110〉 may not be necessary for full ductility. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Magazine is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYCRYSTALS KW - MONAZITE KW - DISLOCATIONS in crystals KW - DEFORMATIONS (Mechanics) KW - DUCTILITY KW - dislocations KW - monazite KW - monoclinic KW - partial dislocations KW - slip systems KW - TEM N1 - Accession Number: 35753263; Hay, R. S. 1; Email Address: randall.hay@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, OH, USA.; Source Info: 12/21/2008, Vol. 88 Issue 36, p4243; Subject Term: POLYCRYSTALS; Subject Term: MONAZITE; Subject Term: DISLOCATIONS in crystals; Subject Term: DEFORMATIONS (Mechanics); Subject Term: DUCTILITY; Author-Supplied Keyword: dislocations; Author-Supplied Keyword: monazite; Author-Supplied Keyword: monoclinic; Author-Supplied Keyword: partial dislocations; Author-Supplied Keyword: slip systems; Author-Supplied Keyword: TEM; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 28p; Illustrations: 24 Diagrams, 2 Charts, 1 Graph; Document Type: Article L3 - 10.1080/14786430802572560 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35753263&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tandon, G.P. AU - Pochiraju, K.V. AU - Schoeppner, G.A. T1 - Thermo-oxidative behavior of high-temperature PMR-15 resin and composites JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2008/12/20/ VL - 498 IS - 1/2 M3 - Article SP - 150 EP - 161 SN - 09215093 AB - Abstract: The present study examines the thermo-oxidative behavior of high-temperature polymer matrix composite materials. Thermo-oxidative aging in neat resin is simulated with a diffusion-reaction model in which temperature, oxygen concentration and weight loss effects are considered. The thermo-oxidative behavior of the composite, on the other hand, is significantly different from that of the constituents as the composite microstructure, including the fiber/matrix interphase/interface, introduces anisotropy in the diffusion and oxidation behavior. Unit cell analyses are carried out using three-dimensional finite element analysis of repeated volume elements representing the fiber, matrix and interphase regions, and the resin oxidation model. Parametric studies illustrating the anisotropy in the oxidative region growth and the effect of fiber and interphase diffusivity on the oxidation layer growth are discussed. It is suggested that fiber–matrix debonding could provide additional diffusion paths to explain the extent of observed anisotropic oxidation growth. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERIC composites KW - OXIDATION KW - GUMS & resins KW - DIFFUSION processes KW - MICROSTRUCTURE KW - HIGH temperatures KW - CRYSTALLOGRAPHY KW - Aging KW - Anisotropic KW - Damage KW - Diffusion KW - Reaction KW - Thermo-oxidation N1 - Accession Number: 34998047; Tandon, G.P. 1; Email Address: G.Tandon@wpafb.af.mil Pochiraju, K.V. 2 Schoeppner, G.A. 3; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0060, USA 2: Stevens Institute of Technology, Department of Mechanical Engineering, Hoboken, NJ 07030, USA 3: US Air Force Research Laboratory, AFRL/RXBC, Wright-Patterson Air Force Base, xxx, OH 45433, USA; Source Info: Dec2008, Vol. 498 Issue 1/2, p150; Subject Term: POLYMERIC composites; Subject Term: OXIDATION; Subject Term: GUMS & resins; Subject Term: DIFFUSION processes; Subject Term: MICROSTRUCTURE; Subject Term: HIGH temperatures; Subject Term: CRYSTALLOGRAPHY; Author-Supplied Keyword: Aging; Author-Supplied Keyword: Anisotropic; Author-Supplied Keyword: Damage; Author-Supplied Keyword: Diffusion; Author-Supplied Keyword: Reaction; Author-Supplied Keyword: Thermo-oxidation; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.msea.2007.09.103 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34998047&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kudryavtsev, A. A. AU - Popugaev, S. D. AU - Demidov, V. I. AU - Adams, S. F. AU - Jiao, C. Q. T1 - Formative time of breakdown modeled for the ignition of air and n-butane mixtures using effective ionization coefficients. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/12/15/ VL - 93 IS - 24 M3 - Article SP - 241501 PB - American Institute of Physics SN - 00036951 AB - It is shown that simulations of ignition by electric arc discharge in n-butane and air mixtures have interesting features, which deviate from results obtained by simple extension of calculations based on methanelike fuels. In particular, it is demonstrated that lowering the temperature of the n-butane-air mixture before ignition under certain conditions will actually decrease the ignition stage time as well as the required electric field. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIMULATION methods & models KW - ELECTRIC arc KW - ELECTRIC discharges KW - BUTANE KW - METHANE KW - ELECTRIC fields N1 - Accession Number: 35922099; Kudryavtsev, A. A. 1 Popugaev, S. D. 1 Demidov, V. I. 2 Adams, S. F. 3; Email Address: steven.adams@wpafb.af.mil Jiao, C. Q. 4; Affiliation: 1: St. Petersburg State University, St. Petersburg 198904, Russia 2: Department of Physics, West Virginia University, Morgantown, West Virginia 26506, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 4: ISSI Inc., Dayton, Ohio 45440-3638, USA; Source Info: 12/15/2008, Vol. 93 Issue 24, p241501; Subject Term: SIMULATION methods & models; Subject Term: ELECTRIC arc; Subject Term: ELECTRIC discharges; Subject Term: BUTANE; Subject Term: METHANE; Subject Term: ELECTRIC fields; NAICS/Industry Codes: 412110 Petroleum and petroleum products merchant wholesalers; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.3052882 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35922099&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Quast, J.P. AU - Boehlert, C.J. AU - Gardner, R. AU - Tuegel, E. AU - Wyen, T. T1 - A microstructure and sonic fatigue investigation of Ti–TiB functionally graded materials JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2008/12/15/ VL - 497 IS - 1/2 M3 - Article SP - 1 EP - 9 SN - 09215093 AB - Abstract: The microstructure and high-cycle sonic fatigue behavior of 3- and 25-mm-thick titanium–titanium boride (Ti–TiB) functionally graded plates were evaluated. The TiB content had a significant effect on the microstructure. A needle-like TiB phase existed at low TiB phase volume percentages (<33.8%), while higher volume percentages resulted in TiB-phase clustering. For larger layer thicknesses, the transition or interface region between the layers was more evident. Fracture surface images of the fatigue specimens indicated that high TiB content regions exhibited brittle fracture characteristics while the Ti-rich layers exhibited ductile failure characteristics. A Ti–85%TiB alloy was also investigated and this material exhibited TiB clustering and sporadic fatigue lives as well as brittle fracture characteristics. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - VOLUME (Cubic content) KW - FATIGUE KW - FRACTURES KW - Boron KW - Fatigue KW - Functionally graded material KW - Microstructure KW - Titanium N1 - Accession Number: 34744612; Quast, J.P. 1; Email Address: jquast@msu.edu Boehlert, C.J. 1 Gardner, R. 2 Tuegel, E. 3 Wyen, T. 3; Affiliation: 1: Michigan State University, East Lansing, MI, United States 2: Miami University, Miami, OH, United States 3: Air Force Research Laboratory, Air Vehicles Directorate, Dayton, OH, United States; Source Info: Dec2008, Vol. 497 Issue 1/2, p1; Subject Term: MICROSTRUCTURE; Subject Term: VOLUME (Cubic content); Subject Term: FATIGUE; Subject Term: FRACTURES; Author-Supplied Keyword: Boron; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Functionally graded material; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Titanium; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.msea.2008.07.045 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34744612&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hsu, Paul S. AU - Roy, Sukesh AU - Gord, James R. T1 - Development of a nearly transform-limited, low-repetition-rate, picosecond optical parametric generator JO - Optics Communications JF - Optics Communications Y1 - 2008/12/15/ VL - 281 IS - 24 M3 - Article SP - 6068 EP - 6071 SN - 00304018 AB - Abstract: A low-repetition-rate (10-Hz), picosecond (ps) optical parametric generator (OPG) seeded at the idler wavelength with a high-power diode laser is demonstrated. The output of the OPG at ∼566nm is amplified in dye cells, resulting in signal enhancement by more than three orders of magnitude. The nearly transform-limited beam at ∼566nm has a pulsewidth of ∼170ps, with an overall output of ∼2.3mJ/pulse. The laser is tuned either by tuning the nonlinear crystal or the seed-laser current. The applications of such a simple, compact, high-performance, tunable ps laser system for linear and nonlinear spectroscopies are outlined. [Copyright &y& Elsevier] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARAMETRIC amplifiers KW - LASER beams KW - PICOSECOND pulses KW - WAVELENGTHS KW - DIODES KW - SPECTRUM analysis KW - NONLINEAR models (Statistics) KW - 42.60.Jf N1 - Accession Number: 35206394; Hsu, Paul S. 1 Roy, Sukesh; Email Address: sroy@woh.rr.com Gord, James R. 1; Affiliation: 1: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, OH 45433-7251, USA; Source Info: Dec2008, Vol. 281 Issue 24, p6068; Subject Term: PARAMETRIC amplifiers; Subject Term: LASER beams; Subject Term: PICOSECOND pulses; Subject Term: WAVELENGTHS; Subject Term: DIODES; Subject Term: SPECTRUM analysis; Subject Term: NONLINEAR models (Statistics); Author-Supplied Keyword: 42.60.Jf; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.optcom.2008.09.039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35206394&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sanders, David M. AU - Parker, Jill E. AU - Walker, Wes W. AU - Buchholz, Matt W. AU - Blount, Keith AU - Kiel, Johnathan L. T1 - Field Collection and Genetic Classification of Tick-borne Rickettsiae and Rickettsiae-like Pathogens from South Texas: Coxiella burnetii Isolated from Field-collected Amblyomma cajennense. JO - Annals of the New York Academy of Sciences JF - Annals of the New York Academy of Sciences Y1 - 2008/12/05/ VL - 1149 M3 - Article SP - 208 EP - 211 SN - 00778923 AB - We are reporting the first known isolation of the Q-fever agent Coxiella burnetii from field-collected cayenne ticks Amblyomma cajennense in North America. Q-fever affects a number of domestic ungulates where it can lead to abortion in sheep and goats. There is far less known about the disease's effects on wild species, primarily because of the tendency of the disease to self resolve and to provide long-term immunity to subsequent infections. The first recovery of C. burnetii in North America was from the tick species Dermacentor andersoni. Since the original isolation C. burnetii has been recovered from five other North American tick species. The currently accepted mode for the majority of human infections is inhalation. The Centers for Disease Control and Prevention, Division of Viral and Rickettsial Diseases, Rickettsial Zoonoses Branch asserts the Q-fever agent as requiring as few as one organism to cause disease via inhalation in susceptible humans. However, with more and more isolations from ticks, evidence linking C. burnetii and ticks is mounting. The true role of tick species as competent vectors is still unconfirmed. Preemptive field collections of possible vector arthropods, hosts, and reservoirs can provide invaluable baseline environmental data that will prove supportive in follow-up studies and abatement efforts. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of the New York Academy of Sciences is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AMBLYOMMA KW - RICKETTSIACEAE KW - COXIELLA KW - RICKETTSIA KW - ACAROLOGY KW - TICKS KW - COMMUNICABLE diseases KW - ANIMALS as carriers of disease KW - UNITED States KW - Amblyomma cajennense KW - cayenne tick KW - Coxiella burnetii KW - Q-fever KW - tick-bone fever N1 - Accession Number: 35712404; Sanders, David M. 1; Email Address: dsander8@gimail.af.mil Parker, Jill E. 2 Walker, Wes W. 2 Buchholz, Matt W. 2 Blount, Keith 2 Kiel, Johnathan L. 2; Affiliation: 1: Air Force Institute of Technology – Civilian Institute Program, Texas A&M University, Department of Entomology, College Station, Texas, USA 2: Counterproliferation Branch, Bioscience and Protection Division, Human Effectiveness Directorate Air Force Research Laboratory, Brooks City-Base, Texas, USA; Source Info: Dec2008, Vol. 1149, p208; Subject Term: AMBLYOMMA; Subject Term: RICKETTSIACEAE; Subject Term: COXIELLA; Subject Term: RICKETTSIA; Subject Term: ACAROLOGY; Subject Term: TICKS; Subject Term: COMMUNICABLE diseases; Subject Term: ANIMALS as carriers of disease; Subject Term: UNITED States; Author-Supplied Keyword: Amblyomma cajennense; Author-Supplied Keyword: cayenne tick; Author-Supplied Keyword: Coxiella burnetii; Author-Supplied Keyword: Q-fever; Author-Supplied Keyword: tick-bone fever; Number of Pages: 4p; Illustrations: 1 Color Photograph, 3 Charts; Document Type: Article L3 - 10.1196/annals.1428.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35712404&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kiel, Johnathan L. AU - Gonzalez, Yvette AU - Parker, Jill E. AU - Andrews, Carrie AU - Martinez, Dominique AU - Vachiéry, Nathalie AU - Lefrançois, Thierry T1 - Viral Association with the Elusive Rickettsia of Viper Plague from Ghana, West Africa. JO - Annals of the New York Academy of Sciences JF - Annals of the New York Academy of Sciences Y1 - 2008/12/05/ VL - 1149 M3 - Article SP - 318 EP - 321 SN - 00778923 AB - We previously reported a rickettsial heartwater-like disease in vipers from Ghana that resembled heartwater in its gross lesions, was apparently transmitted by ticks ( Aponomma and Amblyomma), and responded clinically favorably to early treatment with tetracycline. Cell culture showed consistent cytopathic effects in bovine endothelial cells, viper cells, and mouse cells, and inhibition of cytopathic effect by tetracycline in vitro. A type D retrovirus was observed in vacuoles in all infected cells. The virus and rickettsia infection was associated with transfer of cytopathic effect, regardless of cell species. Close association of virus and rickettsia may indicate a dual infection etiology of viper plague. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of the New York Academy of Sciences is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TETRACYCLINE KW - APONOMMA KW - IXODIDAE KW - CELLS KW - RICKETTSIA KW - EPIDEMIOLOGY -- Research KW - AFRICA KW - ehrlichia KW - heartwater KW - type D retrovirus KW - viper plague N1 - Accession Number: 35712334; Kiel, Johnathan L. 1; Email Address: Johnathan.Kiel@brooks.af.mil Gonzalez, Yvette 1 Parker, Jill E. 1 Andrews, Carrie 1 Martinez, Dominique 2 Vachiéry, Nathalie 2 Lefrançois, Thierry 2; Affiliation: 1: Human Effectiveness Directorate, Air Force Research Laboratory, Brooks City-Base, Texas, USA 2: CIRAD-EMVT, Domaine de Duclos, Prise d'Eau, Guadeloupe, French West Indies; Source Info: Dec2008, Vol. 1149, p318; Subject Term: TETRACYCLINE; Subject Term: APONOMMA; Subject Term: IXODIDAE; Subject Term: CELLS; Subject Term: RICKETTSIA; Subject Term: EPIDEMIOLOGY -- Research; Subject Term: AFRICA; Author-Supplied Keyword: ehrlichia; Author-Supplied Keyword: heartwater; Author-Supplied Keyword: type D retrovirus; Author-Supplied Keyword: viper plague; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; NAICS/Industry Codes: 325411 Medicinal and Botanical Manufacturing; Number of Pages: 4p; Illustrations: 2 Black and White Photographs; Document Type: Article L3 - 10.1196/annals.1428.092 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35712334&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Na, Jeong K. AU - Blackshire, James L. AU - Kuhr, Samuel T1 - Design, fabrication, and characterization of single-element interdigital transducers for NDT applications JO - Sensors & Actuators A: Physical JF - Sensors & Actuators A: Physical Y1 - 2008/12/03/ VL - 148 IS - 2 M3 - Article SP - 359 EP - 365 SN - 09244247 AB - Abstract: Single-element interdigital transducers (IDTs) are designed, fabricated, and characterized as a complimentary sensor approach for traditional ultrasonic transducers used in nondestructive testing (NDT). The frequency of interest is in the lower megahertz range, 2–10MHz. In this paper, a simple five-finger paired IDT is described, where laser micro-machining techniques were used to shape the electrode patterns for an IDT resonance frequency of ∼3MHz. Detailed characterization of the Rayleigh surface waves generated by the IDT is performed using a scanning laser interferometry system. Wave properties such as beam profile, beam divergence, energy decay, frequency response, and phase dependence are reported. [Copyright &y& Elsevier] AB - Copyright of Sensors & Actuators A: Physical is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERDIGITAL transducers KW - LASER interferometers KW - NONDESTRUCTIVE testing KW - GAUSSIAN beams KW - BANDWIDTHS KW - RAYLEIGH waves KW - ULTRASONIC transducers KW - Gaussian beam profile KW - Interdigital transducer KW - Laser interferometer KW - Narrow bandwidth KW - Rayleigh waves N1 - Accession Number: 35503426; Na, Jeong K. 1; Email Address: jeong-kwan.na@wpafb.af.mil Blackshire, James L. 2 Kuhr, Samuel 1; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469-0127, USA 2: Air Force Research Laboratory (AFRL/RXLP), Wright-Patterson AFB, OH 45433, USA; Source Info: Dec2008, Vol. 148 Issue 2, p359; Subject Term: INTERDIGITAL transducers; Subject Term: LASER interferometers; Subject Term: NONDESTRUCTIVE testing; Subject Term: GAUSSIAN beams; Subject Term: BANDWIDTHS; Subject Term: RAYLEIGH waves; Subject Term: ULTRASONIC transducers; Author-Supplied Keyword: Gaussian beam profile; Author-Supplied Keyword: Interdigital transducer; Author-Supplied Keyword: Laser interferometer; Author-Supplied Keyword: Narrow bandwidth; Author-Supplied Keyword: Rayleigh waves; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.sna.2008.08.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35503426&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Biffinger, Justin C. AU - Pietron, Jeremy AU - Bretschger, Orianna AU - Nadeau, Lloyd J. AU - Johnson, Glenn R. AU - Williams, Cynthia C. AU - Nealson, Kenneth H. AU - Ringeisen, Bradley R. T1 - The influence of acidity on microbial fuel cells containing Shewanella oneidensis JO - Biosensors & Bioelectronics JF - Biosensors & Bioelectronics Y1 - 2008/12// VL - 24 IS - 4 M3 - Article SP - 906 EP - 911 SN - 09565663 AB - Abstract: Microbial fuel cells (MFCs) traditionally operate at pH values between 6 and 8. However, the effect of pH on the growth and electron transfer abilities of Shewanella oneidensis MR-1 (wild-type) and DSP10 (spontaneous mutant), bacteria commonly used in MFCs, to electrodes has not been examined. Miniature MFCs using bare graphite felt electrodes and nanoporous polycarbonate membranes with MR-1 or DSP10 cultures generated >8W/m3 and ∼400μA between pH 6–7. The DSP10 strain significantly outperformed MR-1 at neutral pH but underperformed at pH 5. Higher concentrations of DSP10 were sustained at pH 7 relative to that of MR-1, whereas at pH 5 this trend was reversed indicating that cell count was not solely responsible for the observed differences in current. S. oneidensis MR-1 was determined to be more suitable than DSP10 for MFCs with elevated acidity levels. The concentration of riboflavin in the bacterial cultures was reduced significantly at pH 5 for DSP10, as determined by high performance liquid chromatography (HPLC) of the filter sterilized growth media. In addition, these results suggest that mediator biosynthesis and not solely bacterial concentration plays a significant role in current output from S. oneidensis containing MFCs. [Copyright &y& Elsevier] AB - Copyright of Biosensors & Bioelectronics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACIDITY function KW - FUEL cells KW - SHEWANELLA KW - HIGH performance liquid chromatography KW - Acidity KW - Mediated electron transfer KW - Microbial fuel cells (MFCs) KW - Shewanella oneidensis N1 - Accession Number: 34648851; Biffinger, Justin C. 1 Pietron, Jeremy 1 Bretschger, Orianna 2,3 Nadeau, Lloyd J. 4 Johnson, Glenn R. 4 Williams, Cynthia C. 1 Nealson, Kenneth H. 2 Ringeisen, Bradley R. 1; Email Address: Bradley.ringeisen@nrl.navy.mil; Affiliation: 1: Chemistry Division, US Naval Research Laboratory, 4555 Overlook Avenue, SW, Washington, DC 20375, United States 2: Department of Earth Sciences, Mail Code 0740, University of Southern California, Los Angeles, CA 90089-0740, United States 3: The Mork Family Department of Chemical Engineering and Materials Science, Mail Code 0241, University of Southern California, Los Angeles, CA 90089-0241, United States 4: Air Force Research Laboratory, 139 Barnes Drive, Suite #2, Tyndall AFB, FL 32403, United States; Source Info: Dec2008, Vol. 24 Issue 4, p906; Subject Term: ACIDITY function; Subject Term: FUEL cells; Subject Term: SHEWANELLA; Subject Term: HIGH performance liquid chromatography; Author-Supplied Keyword: Acidity; Author-Supplied Keyword: Mediated electron transfer; Author-Supplied Keyword: Microbial fuel cells (MFCs); Author-Supplied Keyword: Shewanella oneidensis; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.bios.2008.07.034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34648851&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, Qi AU - Chasiotis, Ioannis AU - Chen, Chenggang AU - Roy, Ajit T1 - Nanoscale and effective mechanical behavior and fracture of silica nanocomposites JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2008/12// VL - 68 IS - 15/16 M3 - Article SP - 3137 EP - 3144 SN - 02663538 AB - Abstract: An experimental investigation of the composite and local mechanical and fracture behavior of an EPON based epoxy with 12nm (primary) and 100nm (secondary) fumed silica particles was carried out. The secondary particles promoted matrix stiffening at small weight fractions, which decreased at larger weight fractions and converged to that of the primary nanoparticles. The elastic modulus of the composites with 12-nm silica particles increased by as much as 30% for 15 wt.% silica loading. Atomic Force Microscopy coupled with Digital Image correlation (AFM/DIC) full-field strain measurements showed matrix strain localization in the vicinity of 100-nm fillers, which controlled the overall composite stiffness. In composites with 5 wt.% secondary particles, neighboring particles located at small proximities to each other behaved as single large particles or resulted in local matrix strain shielding. The tensile strength of all composites was independent of particle size and weight fraction, which was attributed to strong particle bonding and failure initiation in the matrix. The critical mode I stress intensity factor of 12-nm silica composites increased with silica weight fraction, by as much as 35% for 15 wt.% silica. SEM fractographs showed enhanced matrix yielding for 15 wt.% silica compared to significant roughening of the fracture plane and void formation at smaller weight fractions. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOCHEMISTRY KW - SILICA KW - FRACTURE mechanics KW - COMPOSITE materials KW - NANOPARTICLES KW - ATOMIC force microscopy KW - DEFORMATIONS (Mechanics) KW - A. Nanocomposites KW - A. Nanoparticles KW - B. Fracture KW - C. Deformation KW - D. Atomic force microscopy (AFM) N1 - Accession Number: 35204831; Chen, Qi 1 Chasiotis, Ioannis 1; Email Address: chasioti@uiuc.edu Chen, Chenggang 2 Roy, Ajit 3; Affiliation: 1: Aerospace Engineering, University of Illinois at Urbana-Champaign, 306 Talbot Lab, 104 South Wright Street, Urbana, IL 61801, USA 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH 45469, USA; Source Info: Dec2008, Vol. 68 Issue 15/16, p3137; Subject Term: NANOCHEMISTRY; Subject Term: SILICA; Subject Term: FRACTURE mechanics; Subject Term: COMPOSITE materials; Subject Term: NANOPARTICLES; Subject Term: ATOMIC force microscopy; Subject Term: DEFORMATIONS (Mechanics); Author-Supplied Keyword: A. Nanocomposites; Author-Supplied Keyword: A. Nanoparticles; Author-Supplied Keyword: B. Fracture; Author-Supplied Keyword: C. Deformation; Author-Supplied Keyword: D. Atomic force microscopy (AFM); NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.compscitech.2008.07.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35204831&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morscher, Gregory N. AU - Ojard, Greg AU - Miller, Robert AU - Gowayed, Yasser AU - Santhosh, Unni AU - Ahmad, Jalees AU - John, Reji T1 - Tensile creep and fatigue of Sylramic-iBN melt-infiltrated SiC matrix composites: Retained properties, damage development, and failure mechanisms JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2008/12// VL - 68 IS - 15/16 M3 - Article SP - 3305 EP - 3313 SN - 02663538 AB - Abstract: An understanding of the elevated temperature tensile creep, fatigue, rupture, and retained properties of ceramic matrix composites (CMC) envisioned for use in gas turbine engine applications is essential for component design and life-prediction. In order to quantify the effect of stress, time, temperature, and oxidation for a state-of-the-art composite system, a wide variety of tensile creep, dwell fatigue, and cyclic fatigue experiments were performed in air at 1204°C for the SiC/SiC CMC system consisting of Sylramic-iBN SiC fibers, BN fiber interphase coating, and slurry-cast melt-infiltrated (MI) SiC-based matrix. Tests were either taken to failure or interrupted. Interrupted tests were then mechanically tested at room temperature to determine the residual properties. The retained properties of most of the composites subjected to tensile creep or fatigue were usually within 20% of the as-produced strength and 10% of the as-produced elastic modulus. It was observed that during creep, residual stresses in the composite are altered to some extent which results in an increased compressive stress in the matrix upon cooling and a subsequent increased stress required to form matrix cracks. Microscopy of polished sections and the fracture surfaces of specimens which failed during stressed-oxidation or after the room-temperature retained property test was performed on some of the specimens in order to quantify the nature and extent of damage accumulation that occurred during the test. It was discovered that the distribution of stress-dependent matrix cracking at 1204°C was similar to the as-produced composites at room temperature; however, matrix crack growth occurred over time and typically did not appear to propagate through-the-thickness except at the final failure crack. Failure of the composites was due to either oxidation-induced unbridged crack growth, which dominated the higher stress regime (⩾179MPa) or controlled by degradation of the fibers, probably caused by intrinsic creep-induced flaw growth of the fibers or internal attack of the fibers via Si diffusion through the CVI SiC and/or microcracks at the lower stress regime (⩽165MPa). [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CERAMIC-matrix composites KW - CREEP (Materials) KW - SILICON carbide KW - FAILURE analysis (Engineering) KW - OXIDATION KW - RESIDUAL stresses KW - ACOUSTIC emission KW - A. Ceramic matrix composites KW - B. Creep KW - B. Fatigue KW - B. Matrix cracking KW - D. Acoustic emission N1 - Accession Number: 35204855; Morscher, Gregory N. 1; Email Address: gmorscher@sbcglobal.net Ojard, Greg 2 Miller, Robert 2 Gowayed, Yasser 3 Santhosh, Unni 4 Ahmad, Jalees 4 John, Reji 5; Affiliation: 1: Ohio Aerospace Institute, NASA Glenn Research Center, 21000 Brookpark Road, MS 106-5, Cleveland, OH 44135, USA 2: Pratt and Whitney, East Hartford, CT, USA 3: Auburn University, Auburn, AL, USA 4: Research Applications Inc., San Diego, CA, USA 5: Materials and Manufacturing Directorate, Air Force Research Laboratory, AFRL/RXLMN, Wright-Patterson AFB, OH, USA; Source Info: Dec2008, Vol. 68 Issue 15/16, p3305; Subject Term: CERAMIC-matrix composites; Subject Term: CREEP (Materials); Subject Term: SILICON carbide; Subject Term: FAILURE analysis (Engineering); Subject Term: OXIDATION; Subject Term: RESIDUAL stresses; Subject Term: ACOUSTIC emission; Author-Supplied Keyword: A. Ceramic matrix composites; Author-Supplied Keyword: B. Creep; Author-Supplied Keyword: B. Fatigue; Author-Supplied Keyword: B. Matrix cracking; Author-Supplied Keyword: D. Acoustic emission; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.compscitech.2008.08.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35204855&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tschopp, M.A. AU - Tucker, G.J. AU - McDowell, D.L. T1 - Atomistic simulations of tension–compression asymmetry in dislocation nucleation for copper grain boundaries JO - Computational Materials Science JF - Computational Materials Science Y1 - 2008/12// VL - 44 IS - 2 M3 - Article SP - 351 EP - 362 SN - 09270256 AB - Abstract: Atomistic simulations are used to investigate how grain boundary structure influences dislocation nucleation under uniaxial tension and compression for a specific class of symmetric tilt grain boundaries that contain the E structural unit. After obtaining the minimum energy grain boundary structure, molecular dynamics was employed based on an embedded-atom method potential for copper at 10K. Results show several differences in dislocation nucleation with respect to uniaxial tension and compression. First, the average nucleation stress for all 〈110〉 symmetric tilt grain boundaries is over three times greater in compression than in tension for both the high strain rate and quasistatic simulations. Second, partial dislocations nucleate from the boundary on the {111} slip plane under uniaxial tension. However, partial and full dislocations nucleate from the boundary on the {100} and {111} slip planes under uniaxial compression. The full dislocation nucleation on the {100} plane for boundaries with misorientations near the coherent twin boundary is explained through the higher resolved shear stress on the {100} plane compared to the {111} plane. Last, individual dislocation nucleation mechanisms under uniaxial tension and compression are analyzed. For the vicinal twin boundary under tension, the grain boundary partial dislocation is emitted into the lattice on the same {111} plane that it dissociated onto. For compression of the vicinal twin, the 1/3〈111 〉 disconnection is removed through full dislocation emission on the {100} plane and partial dislocation emission parallel to the coherent twin boundary plane, restoring the boundary to the coherent twin. For the boundary, the nearly simultaneous emission of numerous partial dislocations from the boundary result in the formation of the hexagonal close-packed (HCP) phase. [Copyright &y& Elsevier] AB - Copyright of Computational Materials Science is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISLOCATIONS in crystals KW - COPPER -- Research KW - CRYSTAL grain boundaries KW - MOLECULAR dynamics KW - SIMULATION methods & models KW - STRAINS & stresses (Mechanics) KW - 02.70.Ns KW - 61.72.Lk KW - Dislocation nucleation KW - Dislocations KW - Grain boundaries KW - Molecular dynamics KW - Tension–compression asymmetry N1 - Accession Number: 35202929; Tschopp, M.A. 1,2 Tucker, G.J. 1 McDowell, D.L. 1,3; Email Address: david.mcdowell@me.gatech.edu; Affiliation: 1: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States 2: Air Force Research Laboratory RXLMN (UTC), Wright-Patterson Air Force Base, OH 45433, United States 3: G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States; Source Info: Dec2008, Vol. 44 Issue 2, p351; Subject Term: DISLOCATIONS in crystals; Subject Term: COPPER -- Research; Subject Term: CRYSTAL grain boundaries; Subject Term: MOLECULAR dynamics; Subject Term: SIMULATION methods & models; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: 02.70.Ns; Author-Supplied Keyword: 61.72.Lk; Author-Supplied Keyword: Dislocation nucleation; Author-Supplied Keyword: Dislocations; Author-Supplied Keyword: Grain boundaries; Author-Supplied Keyword: Molecular dynamics; Author-Supplied Keyword: Tension–compression asymmetry; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.commatsci.2008.03.041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35202929&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Cook, Martin L. T1 - A Force for (Relative) Good: An Augustinian Persepective. JO - Defense & Security Analysis JF - Defense & Security Analysis Y1 - 2008/12// VL - 24 IS - 4 M3 - Editorial SP - 349 EP - 361 SN - 14751798 AB - The opinion piece presents the author's thoughts regarding the term "force for good." The application of the concept to the usage of military force to accomplish human good is discussed, using the example of the U.S. military. The philosophy and history behind the U.S. understanding of "force for good" are described. KW - MILITARY art & science KW - HUMANITARIAN intervention KW - ARMED Forces KW - UNITED States N1 - Accession Number: 35537758; Cook, Martin L. 1; Affiliation: 1: Philosophy Department, United States Air Force Academy, CO, USA; Source Info: Dec2008, Vol. 24 Issue 4, p349; Subject Term: MILITARY art & science; Subject Term: HUMANITARIAN intervention; Subject Term: ARMED Forces; Subject Term: UNITED States; NAICS/Industry Codes: 928110 National Security; Number of Pages: 13p; Document Type: Editorial L3 - 10.1080/14751790802569135 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35537758&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rama Gorla AU - Larry Byrd AU - David Pratt T1 - Entropy minimization in micro-scale evaporating thin liquid film in capillary tubes. JO - Heat & Mass Transfer JF - Heat & Mass Transfer Y1 - 2008/12// VL - 45 IS - 2 M3 - Article SP - 131 EP - 138 SN - 09477411 AB - Abstract  An analysis has been provided for the entropy generated for the micro/nano scale heat and mass transfer in a capillary tube in terms of the gradients of velocity, temperature and concentration as well as the physical properties of the fluid. The heat and mass transfer rates are assumed to be uniform on the surface of the capillary tube. The optimum tube diameter that corresponds to the minimization of entropy generated and minimization of fluid flow resistance is about 1 mm. We have applied the method of thermodynamic optimization to capillary driven systems. The objective was to identify the geometric configuration that maximized performance by minimizing the entropy generated when the flow rate is prescribed. [ABSTRACT FROM AUTHOR] AB - Copyright of Heat & Mass Transfer is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMODYNAMICS KW - ENTROPY KW - THIN films KW - MASS transfer N1 - Accession Number: 34749986; Rama Gorla 1 Larry Byrd 2 David Pratt 2; Affiliation: 1: Cleveland State University Department of Mechanical Engineering Cleveland OH 44115-2425 USA 2: Air Force Research Laboratory, Wright Patterson Air Force Base Thermal Structures Branch, Air Vehicles Directorate Dayton OH 45433 USA; Source Info: Dec2008, Vol. 45 Issue 2, p131; Subject Term: THERMODYNAMICS; Subject Term: ENTROPY; Subject Term: THIN films; Subject Term: MASS transfer; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34749986&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ashrafiuon, Hashem AU - Erwin, R. Scott T1 - Sliding mode control of underactuated multibody systems and its application to shape change control. JO - International Journal of Control JF - International Journal of Control Y1 - 2008/12// VL - 81 IS - 12 M3 - Article SP - 1849 EP - 1858 SN - 00207179 AB - In this article, we introduce an approach based on sliding mode control to design full state feedback controllers for stabilisation of underactuated non-linear multibody systems. We define first order sliding surfaces as a linear combination of actuated and unactuated coordinate tracking errors. Lyapunov stability analysis guarantees that all system trajectories reach and remain on the sliding surfaces. However, stability of the sliding surfaces depends on the equilibrium manifold. If the system has isolated equilibrium points, it is linearly controllable and asymptotic stability can be guaranteed under certain conditions. Otherwise, the control system fails Brockett's necessary condition for existence of a smooth stabilising feedback. In the latter case, if the total momentum is conserved, the closed-loop control system will be marginally stable. Consequently, a procedure is proposed to achieve an asymptotically stable discontinuous control law through sliding surface redefinition and shape changes. It is proposed that repetitive application of shape changes will lead to asymptotic convergence of the system to the desired configuration. Simulation results are presented for an inverted pendulum as an example of a system with isolated equilibrium points and an existing communication satellite as an example of shape change control. In both cases, the control is shown to be effective and robust with respect to uncertainties and disturbances. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Control is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FEEDBACK control systems KW - MULTIBODY systems KW - SLIDING mode control KW - AUTOMATIC control KW - LYAPUNOV stability KW - CONTROL theory (Mathematics) KW - shape change actuation KW - sliding modes KW - underactuated systems N1 - Accession Number: 34716818; Ashrafiuon, Hashem 1; Email Address: hashem.ashrafiuon@villanova.edu Erwin, R. Scott 2; Affiliation: 1: Department of Mechanical Engineering, Villanova University, Villanova, PA 19085 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, NM 87117; Source Info: Dec2008, Vol. 81 Issue 12, p1849; Subject Term: FEEDBACK control systems; Subject Term: MULTIBODY systems; Subject Term: SLIDING mode control; Subject Term: AUTOMATIC control; Subject Term: LYAPUNOV stability; Subject Term: CONTROL theory (Mathematics); Author-Supplied Keyword: shape change actuation; Author-Supplied Keyword: sliding modes; Author-Supplied Keyword: underactuated systems; Number of Pages: 10p; Illustrations: 2 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1080/00207170801910409 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34716818&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Myungsoo Jun AU - Jeffcoat, David E. T1 - Control theoretic analysis of a target search problem by a team of search vehicles. JO - International Journal of Control JF - International Journal of Control Y1 - 2008/12// VL - 81 IS - 12 M3 - Article SP - 1878 EP - 1885 SN - 00207179 AB - This article considers a target search problem by a set of unmanned aerial vehicles (UAVs). The problem is modelled as a discrete state, continuous-time Markov process. Convergence properties are investigated by using the eigenvalues and eigenvectors of a state transition rate matrix without explicitly solving differential equations or calculating matrix exponentials. The paper also studies the effect of cueing on convergence rate using eigenvalues analysis and optimal control theoretic perspective. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Control is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles -- Control systems KW - MARKOV processes KW - LINEAR systems KW - STOCHASTIC convergence KW - EIGENVALUES KW - EIGENVECTORS KW - DIFFERENTIAL equations KW - cooperative search KW - linear systems KW - Markov chain KW - unmanned aerial vehicles N1 - Accession Number: 34716815; Myungsoo Jun 1; Email Address: myungsoojun@gmail.com Jeffcoat, David E. 2; Affiliation: 1: University of Florida, Shalimar, FL 32579, USA 2: Air Force Research Laboratory, Munitions Directorate, Eglin Air Force Base, FL 32542, USA; Source Info: Dec2008, Vol. 81 Issue 12, p1878; Subject Term: SPACE vehicles -- Control systems; Subject Term: MARKOV processes; Subject Term: LINEAR systems; Subject Term: STOCHASTIC convergence; Subject Term: EIGENVALUES; Subject Term: EIGENVECTORS; Subject Term: DIFFERENTIAL equations; Author-Supplied Keyword: cooperative search; Author-Supplied Keyword: linear systems; Author-Supplied Keyword: Markov chain; Author-Supplied Keyword: unmanned aerial vehicles; Number of Pages: 8p; Illustrations: 1 Diagram, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1080/00207170801927155 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34716815&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lambert, D.E. T1 - Re-visiting 1-D hypervelocity penetration JO - International Journal of Impact Engineering JF - International Journal of Impact Engineering Y1 - 2008/12// VL - 35 IS - 12 M3 - Article SP - 1631 EP - 1635 SN - 0734743X AB - Abstract: Classical, one-dimensional theory of hydrodynamic penetration is used as the basis of establishing simplified analytical relationships describing energy, momentum, and power deposition during hypervelocity impact events. A concise overview of the 1-D model is given followed by a select grouping of terms into relationships that offer first-order criteria for making engineering design considerations on relevant applications and assist in the analysis of experimental observations. Momentum, energy, and power deposition are found to be proportional to second, third and fourth power exponents, respectively. These analytical terms are presented for constant velocity gradient, i.e. fixed length, rods as well as linear velocity gradient rods, such as shaped charge jets. The role of penetrator-to-target density ratio is then examined in terms of the backflow, or reverse flow of 1-D penetration. Again, the non-dimensional ratio of penetrator-to-target mass density is used to compare the relative velocity of material flow during penetration. The relationship highlights the role of penetrator materials for achieving desired effects in these hypervelocity, terminal ballistics events. Albeit the relationships are derived on the assumptions for hydrodynamic processes, their generality of form and ease of implementation make them a useful first-order description for engineering insight and application over a broad range of velocities. [Copyright &y& Elsevier] AB - Copyright of International Journal of Impact Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPEED KW - HYDRODYNAMICS KW - BARS (Engineering) KW - FLUID mechanics KW - Energy deposition of jets KW - Hypervelocity penetration KW - Reverse flow KW - Shaped charge warhead N1 - Accession Number: 35559373; Lambert, D.E. 1; Email Address: david.lambert@eglin.af.mil; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, 101 West Eglin Boulevard, Suite 135, Eglin Air Force Base, FL 32547, USA; Source Info: Dec2008, Vol. 35 Issue 12, p1631; Subject Term: SPEED; Subject Term: HYDRODYNAMICS; Subject Term: BARS (Engineering); Subject Term: FLUID mechanics; Author-Supplied Keyword: Energy deposition of jets; Author-Supplied Keyword: Hypervelocity penetration; Author-Supplied Keyword: Reverse flow; Author-Supplied Keyword: Shaped charge warhead; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.ijimpeng.2008.07.073 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35559373&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reinhart, W.D. AU - Thornhill, T.F. AU - Chhabildas, L.C. AU - Breiland, W.G. AU - Brown, J.L. T1 - Temperature measurements of expansion products from shock compressed materials using high-speed spectroscopy JO - International Journal of Impact Engineering JF - International Journal of Impact Engineering Y1 - 2008/12// VL - 35 IS - 12 M3 - Article SP - 1745 EP - 1755 SN - 0734743X AB - Abstract: Results from spectral radiance measurements using optical multi-channel analyzer over the visible and near infrared regime provide estimates of temperature from expansion products resulting from shocked materials. Specifically, we have made spectral radiance measurements over the wavelength regime of 300–1500nm. Experiments conducted on aluminum, cerium, and Composition-B high explosive span a wide regime of E/E v, where E is the internal energy increase of the shocked material, and E v, is the specific energy required to vaporize the material. For the materials investigated, the ratio is ∼1, 3 and 5 for aluminum, cerium, and Composition-B, respectively. The basic assumption made to deduce these temperatures is that the debris cloud is radiating as a blackbody with emissivity of one and independent of the wavelength. We are also assuming that the probe is monitoring the debris, which is at a single temperature and that there is no spatial temperature gradient. Temperatures at or above the boiling point are confirmed for aluminum and cerium, while the results for Composition-B provide the time-dependent temperature expansion history for shocked Composition-B over the stress regime of 28–130GPa. These are the first measurements of temperature obtained from the expansion products from materials that have been shocked to very high pressures. [Copyright &y& Elsevier] AB - Copyright of International Journal of Impact Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TEMPERATURE measurements KW - SPECTRUM analysis KW - ALUMINUM KW - PRESSURE KW - Composition-B KW - Hypervelocity KW - Shock compression KW - Spectroscopy KW - Temperature N1 - Accession Number: 35559391; Reinhart, W.D. 1; Email Address: wdreinh@sandia.gov Thornhill, T.F. 1 Chhabildas, L.C. 2 Breiland, W.G. 1 Brown, J.L. 3; Affiliation: 1: Sandia National Laboratories, Albuquerque, NM 87185, USA 2: Air Force Research Laboratory, Eglin AFB, FL 32542, USA 3: California Institute of Technology, Pasadena, CA 91125, USA; Source Info: Dec2008, Vol. 35 Issue 12, p1745; Subject Term: TEMPERATURE measurements; Subject Term: SPECTRUM analysis; Subject Term: ALUMINUM; Subject Term: PRESSURE; Author-Supplied Keyword: Composition-B; Author-Supplied Keyword: Hypervelocity; Author-Supplied Keyword: Shock compression; Author-Supplied Keyword: Spectroscopy; Author-Supplied Keyword: Temperature; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ijimpeng.2008.07.062 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35559391&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Asano, Tetsuya AU - Madhukar, Anupam AU - Mahalingam, Krishnamurthy AU - Brown, Gail J. T1 - Dark current and band profiles in low defect density thick multilayered GaAs/InAs self-assembled quantum dot structures for infrared detectors. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/12// VL - 104 IS - 11 M3 - Article SP - 113115 PB - American Institute of Physics SN - 00218979 AB - We report results of a systematic study of the structural and photoresponse properties of GaAs/{InAs quantum dot (QD)/InGaAs quantum well/GaAs} ×m multiple quantum dot (MQD) structures with m from 1 to 20 placed in n-GaAs/i(MQD)/n-GaAs configuration to act as quantum dot infrared photodetectors (QDIPs). Extremely low dislocation densities inferred from cross-sectional and plan-view transmission electron microscopy and the observed linear increase in photoluminescence intensity with MQD thickness reveal the high quality of these QDIP structures. Temperature and bias dependent dark and photocurrent measurements reveal dark current activation energies (Ea) increasing with the number of QD layers in a manner that indicates that Ea represents the built-in potential in the MQD region. These studies indicate the need for more quantitative modeling to guide optimal doping strategies and profiles to realize high photocurrents while maintaining acceptable dark current. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTILAYERED thin films KW - GALLIUM arsenide KW - INDIUM arsenide KW - QUANTUM dots KW - INFRARED detectors KW - TRANSMISSION electron microscopy KW - SEMICONDUCTOR doping N1 - Accession Number: 35733236; Asano, Tetsuya 1 Madhukar, Anupam 1 Mahalingam, Krishnamurthy 2 Brown, Gail J. 2; Affiliation: 1: Department of Chemical Engineering and Materials Science, Nanostructure Materials and Devices Laboratory, University of Southern California, Los Angeles, California 90089-0241, 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433-7707,; Source Info: Dec2008, Vol. 104 Issue 11, p113115; Subject Term: MULTILAYERED thin films; Subject Term: GALLIUM arsenide; Subject Term: INDIUM arsenide; Subject Term: QUANTUM dots; Subject Term: INFRARED detectors; Subject Term: TRANSMISSION electron microscopy; Subject Term: SEMICONDUCTOR doping; Number of Pages: 5p; Illustrations: 3 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1063/1.3039799 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35733236&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lynch, C. AU - Bliss, D.F. AU - Zens, T. AU - Lin, A. AU - Harris, J.S. AU - Kuo, P.S. AU - Fejer, M.M. T1 - Growth of mm-thick orientation-patterned GaAs for IR and THZ generation JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2008/12// VL - 310 IS - 24 M3 - Article SP - 5241 EP - 5247 SN - 00220248 AB - Abstract: Low-pressure hydride vapor phase epitaxy (HVPE) is being used for the regrowth of thick GaAs on orientation-patterned templates for nonlinear optical frequency conversion. We have achieved epitaxial growth rates of 200μm/h and produced millimeter-thick films in 10-h-long growth runs. A critical problem in the HVPE regrowth of orientation-patterned GaAs is the preservation of the original patterned structure—during thick growth, the domain walls often bend and annihilate. Measurements indicated that the domain wall bending decreased as the growth temperature was reduced. The substrate miscut and the orientation of unpatterned regions also affect the vertical propagation of domain walls. In this paper we discuss the process improvements which have facilitated the production of millimeter-thick layers with nearly vertical domain walls. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPITAXY KW - GALLIUM arsenide KW - LOW pressure (Science) KW - NONLINEAR optics KW - SURFACES (Technology) KW - CRYSTAL growth KW - BENDING (Metalwork) KW - A3. Hydride vapor phase epitaxy KW - B1. Gallium arsenide KW - B2. Nonlinear optic materials N1 - Accession Number: 35562617; Lynch, C. 1; Email Address: candace.lynch@hanscom.af.mil Bliss, D.F. 1 Zens, T. 1 Lin, A. 2 Harris, J.S. 2 Kuo, P.S. 3 Fejer, M.M. 3; Affiliation: 1: Air Force Research Laboratory, Hanscom AFB, MA 01731, USA 2: Solid State Photonics Laboratory, Stanford University, Stanford, CA 94305, USA 3: E. L. Ginzton Laboratory, Stanford University, Stanford, CA 94305, USA; Source Info: Dec2008, Vol. 310 Issue 24, p5241; Subject Term: EPITAXY; Subject Term: GALLIUM arsenide; Subject Term: LOW pressure (Science); Subject Term: NONLINEAR optics; Subject Term: SURFACES (Technology); Subject Term: CRYSTAL growth; Subject Term: BENDING (Metalwork); Author-Supplied Keyword: A3. Hydride vapor phase epitaxy; Author-Supplied Keyword: B1. Gallium arsenide; Author-Supplied Keyword: B2. Nonlinear optic materials; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jcrysgro.2008.08.050 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35562617&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sorensen, Barbara AU - Madni, Azad M. AU - Madni, Carla C. T1 - DECISION SUPERIORITY PROCESS MODEL. JO - Journal of Integrated Design & Process Science JF - Journal of Integrated Design & Process Science Y1 - 2008/12// VL - 12 IS - 4 M3 - Article SP - 39 EP - 48 PB - IOS Press SN - 10920617 AB - Decision superiority is achieved not just by acquiring and assessing the right information, but by translating it into actionable knowledge that can be exploited in the decision making process. Achieving decision superiority is necessary, because the decisions made by commanders and staff, ultimately, determine mission outcome. Although technology is integral to the process, it is limited by factors such as bandwidth optimization, system interoperability, and information flow optimization. However, most important to the Command and Control (C^{2}) decision makers today are the cognitive processes that enable commanders to determine when to employ C^{2} information systems to support C^{2} decisions and the methods of how to respond to cues provided by the systems. This paper describes a continuous decision making process model that is specifically suited to support C^{2} decision superiority. Decision makers are continually inundated with data, albeit most data provides non actionable intelligence and unreliable information. Inadequate data is inadmissible, specifically from the perspective of a C^{2} information systems design, where timely delivery of the right information to C^{2} decision makers is essential, thus, context awareness is a key necessity. Context in C^{2} operations is dynamic and includes factors such as mission, enemy, terrain (and weather), personnel, time available, and civil support. Understanding and keeping track of these variables is the cornerstone of future C^{2} decision making, especially for network centric warfare operations. The DecisionEdge™ model is based on the "context-goal alternatives" construct, which recognizes as context changes, the goal might also change, thus, precipitating the need for generating a new set of alternatives. It should be noted that goals are not constant; therefore, they can change when a new mission directive is initiated. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Integrated Design & Process Science is the property of IOS Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TECHNOLOGY KW - BANDWIDTHS KW - COGNITION KW - PRECIPITATION (Chemistry) KW - DECISION making KW - context-goal alternatives KW - decision making process KW - decision superiority KW - process model N1 - Accession Number: 43511651; Sorensen, Barbara 1 Madni, Azad M. 2 Madni, Carla C. 2; Affiliation: 1: US Air Force Research Laboratory, Mesa, AZ, USA 2: Intelligent Systems Technology, Inc., Los Angeles, CA, USA; Source Info: Dec2008, Vol. 12 Issue 4, p39; Subject Term: TECHNOLOGY; Subject Term: BANDWIDTHS; Subject Term: COGNITION; Subject Term: PRECIPITATION (Chemistry); Subject Term: DECISION making; Author-Supplied Keyword: context-goal alternatives; Author-Supplied Keyword: decision making process; Author-Supplied Keyword: decision superiority; Author-Supplied Keyword: process model; Number of Pages: 10p; Illustrations: 5 Diagrams; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43511651&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - ZHI WU AU - HAUS, JOSEPH W. AU - QIWEN ZHAN AU - NELSON, ROBERT L. T1 - LONG RANGE SURFACE PLASMON DEVICES DESIGN USING SUBWAVELENGTH METAL GRATING. JO - Journal of Nonlinear Optical Physics & Materials JF - Journal of Nonlinear Optical Physics & Materials Y1 - 2008/12// VL - 17 IS - 4 M3 - Article SP - 413 EP - 423 PB - World Scientific Publishing Company SN - 02188635 AB - In this paper we review a new electro-optic devices design strategy using long range surface plasmon (LRSP) excitation along subwavelength metal grating. It is shown that LRSP can be excited on extremely thin subwavelength metal grating embedded in symmetric dielectric ambient. Due to coupling and propagation of LRSP between the metal grating nanowires, a super-narrow reflection dip can be obtained. Compared with conventional LRSP along metal thin film, much narrower resonance is achieved through decreased damping from the existence of large dielectric gaps between the grating nanowires. This interesting phenomenon can be used to design electro-optics devices with improved performance. Examples of electro-optic modulator design with lower insertion loss and low operating voltage and spectral notch filter design with very narrow spectral width will be shown. Its application in refractive index sensing is also discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nonlinear Optical Physics & Materials is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC wire KW - NANOWIRES KW - NANOSTRUCTURED materials KW - SOLID state electronics KW - THICK films KW - moduator KW - Plasmonics KW - spectral filter N1 - Accession Number: 55116949; ZHI WU 1 HAUS, JOSEPH W. 1 QIWEN ZHAN 1; Email Address: qiwen.zhan@notes.udayton.edu NELSON, ROBERT L. 2; Affiliation: 1: Electro-Optics Graduate Program, University of Dayton, Dayton, Ohio 45469, USA. 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA.; Source Info: Dec2008, Vol. 17 Issue 4, p413; Subject Term: ELECTRIC wire; Subject Term: NANOWIRES; Subject Term: NANOSTRUCTURED materials; Subject Term: SOLID state electronics; Subject Term: THICK films; Author-Supplied Keyword: moduator; Author-Supplied Keyword: Plasmonics; Author-Supplied Keyword: spectral filter; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; NAICS/Industry Codes: 335920 Communication and energy wire and cable manufacturing; NAICS/Industry Codes: 335931 Current-Carrying Wiring Device Manufacturing; Number of Pages: 11p; Illustrations: 3 Diagrams, 6 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55116949&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boakye, Emmanuel E. AU - Mogilevsky, Pavel AU - Hay, Randall S. AU - Fair, Geoff E. T1 - Synthesis and Phase Composition of Lanthanide Phosphate Nanoparticles LnPO4 (Ln=La, Gd, Tb, Dy, Y) and Solid Solutions for Fiber Coatings. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2008/12// VL - 91 IS - 12 M3 - Article SP - 3841 EP - 3849 PB - Wiley-Blackwell SN - 00027820 AB - Rare earth phosphates with rare earths of Gd, Tb, and Dy can form either monazite or xenotime. Hydrated lanthanide phosphate precursors to monazite and xenotime were made in aqueous solution. The particles were formed by adding dilute phosphoric acid (H3PO4) to either; (a) lanthanide citrate (Ln-Cit) or (b) lanthanide nitrate (LnNO3) [Ln=La, Gd, Tb, Dy, and Y] solutions followed by altering the pH from ∼1 to ∼10 with ammonium hydroxide. Precursor particle size and morphology was characterized by scanning electron microscopy, (SEM) and weight loss was characterized by thermogravimetric analysis (TGA). The phase presence at temperature was determined by differential thermal analysis (DTA) and X-ray diffraction. The influence of precursor preparation method on the presence of either monazite or xenotime after heat treatment is discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOSPHATES KW - COATING processes KW - NANOPARTICLES KW - NANOSTRUCTURED materials KW - ELECTRON microscopy KW - THIN films N1 - Accession Number: 35711948; Boakye, Emmanuel E. 1; Email Address: emmanuel.boakye@wpafb.af.mil Mogilevsky, Pavel 1 Hay, Randall S. 2 Fair, Geoff E. 2; Affiliation: 1: UES Inc., Dayton, Ohio 45432 2: Air Force Research Laboratory, Materials Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433; Source Info: Dec2008, Vol. 91 Issue 12, p3841; Subject Term: PHOSPHATES; Subject Term: COATING processes; Subject Term: NANOPARTICLES; Subject Term: NANOSTRUCTURED materials; Subject Term: ELECTRON microscopy; Subject Term: THIN films; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 9p; Illustrations: 12 Black and White Photographs, 3 Charts, 8 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2008.02737.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35711948&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Repperger, Daniel W. T1 - Electricity from Renewable Resources -- Status, Prospects, and Impediments. JO - Ohio Journal of Science JF - Ohio Journal of Science Y1 - 2008/12// VL - 108 IS - 5 M3 - Book Review SP - 113 EP - 113 PB - Ohio Academy of Science SN - 00300950 AB - The article reviews the book "Electricity From Renewable Resources -- Status, Prospects, and Impediments" KW - ELECTRICAL engineering KW - RENEWABLE energy sources KW - NONFICTION KW - ELECTRICITY From Renewable Resources: Status, Prospects & Impediments (Book) N1 - Accession Number: 45629992; Repperger, Daniel W. 1; Email Address: daniel.repperger@wpafb.af.mil; Affiliation: 1: Electronics Engineer, US Federal Government, 711 Human Performance Wing, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH 45433; Source Info: Dec2008, Vol. 108 Issue 5, p113; Subject Term: ELECTRICAL engineering; Subject Term: RENEWABLE energy sources; Subject Term: NONFICTION; Reviews & Products: ELECTRICITY From Renewable Resources: Status, Prospects & Impediments (Book); NAICS/Industry Codes: 541330 Engineering Services; Number of Pages: 3/4p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=45629992&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhdanov, B.V. AU - Shaffer, M.K. AU - Sell, J. AU - Knize, R.J. T1 - Cesium vapor laser with transverse pumping by multiple laser diode arrays JO - Optics Communications JF - Optics Communications Y1 - 2008/12// VL - 281 IS - 23 M3 - Article SP - 5862 EP - 5863 SN - 00304018 AB - Abstract: We have demonstrated a Cs vapor laser that utilizes fifteen laser diode arrays for transverse pumping of the gain medium. A maximum output power of 28W was achieved with a total optical to optical efficiency of 14% and a slope efficiency of 15%. Transverse pumping allows scaling of such a laser system to a higher power level by simple increasing of the gain medium volume and the number of pump sources. [Copyright &y& Elsevier] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL vapor lasers KW - CESIUM vapor KW - DIODES KW - OPTOELECTRONIC devices KW - GAS lasers KW - ALKALI metals KW - Alkali lasers KW - Optically pumped lasers N1 - Accession Number: 35075173; Zhdanov, B.V.; Email Address: boris.zhdanov.ctr@usafa.edu Shaffer, M.K. 1 Sell, J. 1 Knize, R.J. 1; Affiliation: 1: US Air Force Academy, Laser and Optics Research Center, 2354 Fairchild Dr., Suite 2A31, USAF Academy, CO 80840, USA; Source Info: Dec2008, Vol. 281 Issue 23, p5862; Subject Term: METAL vapor lasers; Subject Term: CESIUM vapor; Subject Term: DIODES; Subject Term: OPTOELECTRONIC devices; Subject Term: GAS lasers; Subject Term: ALKALI metals; Author-Supplied Keyword: Alkali lasers; Author-Supplied Keyword: Optically pumped lasers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 2p; Document Type: Article L3 - 10.1016/j.optcom.2008.08.046 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35075173&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vršnak, Bojan AU - Cliver, Edward W. T1 - Origin of Coronal Shock Waves. JO - Solar Physics JF - Solar Physics Y1 - 2008/12// VL - 253 IS - 1/2 M3 - Article SP - 215 EP - 235 PB - Springer Science & Business Media B.V. SN - 00380938 AB - The basic idea of the paper is to present transparently and confront two different views on the origin of large-scale coronal shock waves, one favoring coronal mass ejections (CMEs), and the other one preferring flares. For this purpose, we first review the empirical aspects of the relationship between CMEs, flares, and shocks (as manifested by radio type II bursts and Moreton waves). Then, various physical mechanisms capable of launching MHD shocks are presented. In particular, we describe the shock wave formation caused by a three-dimensional piston, driven either by the CME expansion or by a flare-associated pressure pulse. Bearing in mind this theoretical framework, the observational characteristics of CMEs and flares are revisited to specify advantages and drawbacks of the two shock formation scenarios. Finally, we emphasize the need to document clear examples of flare-ignited large-scale waves to give insight on the relative importance of flare and CME generation mechanisms for type II bursts/Moreton waves. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORONAL mass ejections KW - SOLAR activity KW - WAVES (Physics) KW - SOLAR flares KW - SOLAR radio bursts KW - Magnetohydrodynamics (MHD) KW - Shock waves KW - Sun: corona KW - Sun: coronal mass ejections (CMEs) KW - Sun: flares N1 - Accession Number: 35334320; Vršnak, Bojan 1; Email Address: bvrsnak@geof.hr Cliver, Edward W. 2; Affiliation: 1: Faculty of Geodesy, Hvar Observatory, Zagreb, Croatia. 2: Research Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731-3010, USA.; Source Info: Dec2008, Vol. 253 Issue 1/2, p215; Subject Term: CORONAL mass ejections; Subject Term: SOLAR activity; Subject Term: WAVES (Physics); Subject Term: SOLAR flares; Subject Term: SOLAR radio bursts; Author-Supplied Keyword: Magnetohydrodynamics (MHD); Author-Supplied Keyword: Shock waves; Author-Supplied Keyword: Sun: corona; Author-Supplied Keyword: Sun: coronal mass ejections (CMEs); Author-Supplied Keyword: Sun: flares; Number of Pages: 21p; Illustrations: 3 Diagrams, 1 Graph; Document Type: Article L3 - 10.1007/s11207-008-9241-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35334320&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Levine, Daniel S. AU - Perlovsky, Leonid I. T1 - SIMPLIFYING HEURISTICS VERSUS CAREFUL THINKING: SCIENTIFIC ANALYSIS OF MILLENNIAL SPIRITUAL ISSUES. JO - Zygon: Journal of Religion & Science JF - Zygon: Journal of Religion & Science Y1 - 2008/12// VL - 43 IS - 4 M3 - Article SP - 797 EP - 821 PB - Wiley-Blackwell SN - 05912385 AB - There is ample evidence that humans (and other primates) possess a knowledge instinct—a biologically driven impulse to make coherent sense of the world at the highest level possible. Yet behavioral decision-making data suggest a contrary biological drive to minimize cognitive effort by solving problems using simplifying heuristics. Individuals differ, and the same person varies over time, in the strength of the knowledge instinct. Neuroimaging studies suggest which brain regions might mediate the balance between knowledge expansion and heuristic simplification. One region implicated in primary emotional experience is more activated in individuals who use primitive heuristics, whereas two areas of the cortex are more activated in individuals with a strong knowledge drive: one region implicated in detecting risk or conflict and another implicated in generating creative ideas. Knowledge maximization and effort minimization are both evolutionary adaptations, and both are valuable in different contexts. Effort minimization helps us make minor and routine decisions efficiently, whereas knowledge maximization connects us to the beautiful, to the sublime, and to our highest aspirations. We relate the opposition between the knowledge instinct and heuristics to the biblical story of the fall, and argue that the causal scientific worldview is mathematically equivalent to teleological arguments from final causes. Elements of a scientific program are formulated to address unresolved issues. [ABSTRACT FROM AUTHOR] AB - Copyright of Zygon: Journal of Religion & Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FALL of man KW - THEORY of knowledge KW - RELIGIOUS psychology KW - INSTINCT (Behavior) KW - HEURISTIC KW - COGNITION KW - amygdala KW - anterior cingulate cortex KW - beautiful KW - biblical story of the fall KW - brain KW - causality KW - cognitive science KW - creativity KW - decision making KW - dorsolateral prefrontal cortex KW - effort minimization KW - emotions KW - evolutionary adaptations KW - frontal lobes KW - heuristics KW - knowledge instinct KW - neural networks KW - original sin KW - psychology KW - risk KW - sublime KW - teleology N1 - Accession Number: 35347588; Levine, Daniel S. 1 Perlovsky, Leonid I. 2; Affiliation: 1: Professor in the Department of Psychology, University of Texas at Arlington, Arlington, TX 76019-0528; e-mail . 2: Visiting Scholar at Harvard University and Technical Advisor for the Air Force Research Laboratory, SN, Hanscom AFB, MA 01731; e-mail .; Source Info: Dec2008, Vol. 43 Issue 4, p797; Subject Term: FALL of man; Subject Term: THEORY of knowledge; Subject Term: RELIGIOUS psychology; Subject Term: INSTINCT (Behavior); Subject Term: HEURISTIC; Subject Term: COGNITION; Author-Supplied Keyword: amygdala; Author-Supplied Keyword: anterior cingulate cortex; Author-Supplied Keyword: beautiful; Author-Supplied Keyword: biblical story of the fall; Author-Supplied Keyword: brain; Author-Supplied Keyword: causality; Author-Supplied Keyword: cognitive science; Author-Supplied Keyword: creativity; Author-Supplied Keyword: decision making; Author-Supplied Keyword: dorsolateral prefrontal cortex; Author-Supplied Keyword: effort minimization; Author-Supplied Keyword: emotions; Author-Supplied Keyword: evolutionary adaptations; Author-Supplied Keyword: frontal lobes; Author-Supplied Keyword: heuristics; Author-Supplied Keyword: knowledge instinct; Author-Supplied Keyword: neural networks; Author-Supplied Keyword: original sin; Author-Supplied Keyword: psychology; Author-Supplied Keyword: risk; Author-Supplied Keyword: sublime; Author-Supplied Keyword: teleology; Number of Pages: 25p; Illustrations: 4 Diagrams; Document Type: Article L3 - 10.1111/j.1467-9744.2008.00961.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35347588&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lewis, William K. AU - Lindsay, C. Michael AU - Miller, Roger E. T1 - Ionization and fragmentation of isomeric van der Waals complexes embedded in helium nanodroplets. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2008/11/28/ VL - 129 IS - 20 M3 - Article SP - 201101 PB - American Institute of Physics SN - 00219606 AB - The ionization and charge transfer processes, which occur when a doped helium droplet undergoes electron impact, are studied for droplets doped with van der Waals complexes with various structures and electrostatic moments. The mass spectra of the two isomers of hydrogen cyanide complexed with either cyanoacetylene or acetylene in helium droplets were obtained using optically selected mass spectrometry, and show that the structure of the complex has a large effect on the fragmentation pattern. The resulting fragmentation pattern is consistent with an ionization process in which charge steering strongly influences the site of initial ionization. The observed dissociation products may also be subject to caging by the helium matrix. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONIZATION (Atomic physics) KW - QUASIMOLECULES KW - ELECTROSTATICS KW - ACETYLENE KW - MASS spectrometry KW - HELIUM N1 - Accession Number: 35541356; Lewis, William K. 1,2; Email Address: lewiswik@notes.udayton.edu Lindsay, C. Michael 1,3 Miller, Roger E. 1; Affiliation: 1: Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, USA 2: Sensors Technology Office, University of Dayton Research Institute, Dayton, Ohio 45469, USA 3: U.S. Air Force Research Laboratory (AFRL)/RWME, Eglin AFB, Florida 32542, USA; Source Info: 11/28/2008, Vol. 129 Issue 20, p201101; Subject Term: IONIZATION (Atomic physics); Subject Term: QUASIMOLECULES; Subject Term: ELECTROSTATICS; Subject Term: ACETYLENE; Subject Term: MASS spectrometry; Subject Term: HELIUM; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 4p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.3025917 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35541356&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Salem, A.A. AU - Glavicic, M.G. AU - Semiatin, S.L. T1 - The effect of preheat temperature and inter-pass reheating on microstructure and texture evolution during hot rolling of Ti–6Al–4V JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2008/11/25/ VL - 496 IS - 1/2 M3 - Article SP - 169 EP - 176 SN - 09215093 AB - Abstract: The effect of preheat temperature and inter-pass reheating on microstructure and texture evolution during unidirectional hot rolling of Ti–6Al–4V in the alpha+beta field was investigated. Three different heating schedules were used to roll plates at 10% reduction per pass to a 3:1 total reduction (true strain=1.15): (1) preheat at 955°C with inter-pass reheating for 3min, (2) preheat at 955°C without inter-pass reheating, and (3) preheat at 815°C with inter-pass reheating for 3min. Following rolling, each plate was air cooled to simulate production practice. The microstructures and textures were determined using electron-backscatter and X-ray diffraction techniques. The results revealed that the intensity of basal poles decreased along the rolling direction and increased along the normal and transverse directions with decreasing rolling (furnace) temperature or the elimination of reheating between passes. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Heating KW - MICROSTRUCTURE KW - TITANIUM alloys KW - X-ray diffraction KW - Hot rolling KW - Reheating KW - Texture KW - Ti–6Al–4V alloy N1 - Accession Number: 34440107; Salem, A.A. 1; Email Address: ayman.salem@wpafb.af.mil Glavicic, M.G. 2 Semiatin, S.L. 3; Affiliation: 1: Universal Technology Corporation, 1270 N. Fairfield Road, Dayton, OH 45432, United States 2: UES Inc., 4401 Dayton-Xenia Road, Dayton, OH 45433, United States 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLM, Wright-Patterson AFB, OH 45433, United States; Source Info: Nov2008, Vol. 496 Issue 1/2, p169; Subject Term: METALS -- Heating; Subject Term: MICROSTRUCTURE; Subject Term: TITANIUM alloys; Subject Term: X-ray diffraction; Author-Supplied Keyword: Hot rolling; Author-Supplied Keyword: Reheating; Author-Supplied Keyword: Texture; Author-Supplied Keyword: Ti–6Al–4V alloy; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.msea.2008.05.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34440107&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tuteja, Anish AU - Wonjae Choi AU - Mabry, Joseph M. AU - McKinley, Gareth H. AU - Cohen, Robert E. T1 - Robust omniphobic surfaces. JO - Proceedings of the National Academy of Sciences of the United States of America JF - Proceedings of the National Academy of Sciences of the United States of America Y1 - 2008/11/25/ VL - 105 IS - 47 M3 - Article SP - 18200 EP - 18205 SN - 00278424 AB - Superhydrophobic surfaces display water contact angles greater than 150° in conjunction with low contact angle hysteresis. Microscopic pockets of air trapped beneath the water droplets placed on these surfaces lead to a composite solid-liquid-air interface in thermodynamic equilibrium. Previous experimental and theoretical studies suggest that it may not be possible to form similar fully-equilibrated, composite interfaces with drops of liquids, such as alkanes or alcohols, that possess significantly lower surface tension than water (y/v = 72.1 mN/m). In this work we develop surfaces possessing re-entrant texture that can support strongly metastable composite solid-liquid-air interfaces, even with very low surface tension liquids such as pentane (7/v = 15.7 mN/rn). Furthermore, we propose four design parameters that predict the measured contact angles for a liquid droplet on a textured surface, as well as the robustness of the composite interface, based on the properties of the solid surface and the contacting liquid. These design parameters allow us to produce two different families of re-entrant surfaces— randomly-deposited electrospun fiber mats and precisely fabricated microhoodoo surfaces—that can each support a robust composite interface with essentially any liquid. These omniphobic surfaces display contact angles greater than 150° and low contact angle hysteresis with both polar and non-polar liquids possessing a wide range of surface tensions. [ABSTRACT FROM AUTHOR] AB - Copyright of Proceedings of the National Academy of Sciences of the United States of America is the property of National Academy of Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE chemistry KW - CONTACT angle KW - FLUID mechanics KW - PERMEABILITY KW - SURFACE tension KW - Cassie state KW - composite interface KW - liquid-repellency KW - superhydrophobic KW - superoleophobic N1 - Accession Number: 35773603; Tuteja, Anish 1 Wonjae Choi 2 Mabry, Joseph M. 3 McKinley, Gareth H. 2; Email Address: gareth@mit.edu Cohen, Robert E. 1; Email Address: recohen@mit.edu; Affiliation: 1: Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139 2: Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139 3: Air Force Research Laboratory, Propulsion Directorate, Edwards Air Force Base, CA 93524; Source Info: 11/25/2008, Vol. 105 Issue 47, p18200; Subject Term: SURFACE chemistry; Subject Term: CONTACT angle; Subject Term: FLUID mechanics; Subject Term: PERMEABILITY; Subject Term: SURFACE tension; Author-Supplied Keyword: Cassie state; Author-Supplied Keyword: composite interface; Author-Supplied Keyword: liquid-repellency; Author-Supplied Keyword: superhydrophobic; Author-Supplied Keyword: superoleophobic; Number of Pages: 6p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1073/pnas.0804872105 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35773603&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hunter, Chad N. AU - Check, Michael H. AU - Bultman, John E. AU - Voevodin, Andrey A. T1 - Development of matrix-assisted pulsed laser evaporation (MAPLE) for deposition of disperse films of carbon nanoparticles and gold/nanoparticle composite films JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2008/11/25/ VL - 203 IS - 3/4 M3 - Article SP - 300 EP - 306 SN - 02578972 AB - Abstract: Carbon nanopearls films were deposited onto silicon substrates using MAPLE. A 248 nm KrF excimer laser was directed onto a target consisting of ~150 nm-sized carbon nanopearls dispersed in a solvent solution and frozen in liquid nitrogen. The morphology of deposited carbon nanopearl films found to be influenced by matrix solvent, laser energy, repetition rate, background pressure, and substrate temperature. At ambient laboratory temperatures, the morphology of deposited films was characterized by highly concentrated areas of carbon nanopearls in the shape of hollow rings, caused by impingement of liquid droplets of the solvent/nanopearl suspension on the substrate surface followed by evaporation of the solvent. As the substrate temperature was increased, the size of the liquid droplets reaching the substrate surface decreased; however, the amount of material deposited via evaporation also decreased. The optimal deposition conditions were suggested and used for a hybrid process where laser ablation from frozen dispersion solution targets was combined with sputtering from gold targets. A nanocomposite coating consisting of carbon nanopearls encapsulated in a gold matrix was synthesized using MAPLE and magnetron sputtering simultaneously. This process makes it possible to synthesize nanocomposite films using a nanostructured dispersion solution. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PULSED laser deposition KW - SPUTTERING (Physics) KW - NANOPARTICLES KW - CARBON KW - SILICON KW - LIQUID nitrogen KW - EVAPORATION (Chemistry) KW - Laser KW - Magnetron sputtering KW - MAPLE KW - Nanocomposite KW - Nanopearls N1 - Accession Number: 35069685; Hunter, Chad N. 1; Email Address: chad.hunter@wpafb.af.mil Check, Michael H. 2 Bultman, John E. 3 Voevodin, Andrey A. 1; Affiliation: 1: Air Force Research Laboratory, AFRL/RXBT, 2941 Hobson Way, Wright-Patterson AFB, OH 45433-7750, United States 2: SOCHE, United States 3: University of Dayton Research Institute, United States; Source Info: Nov2008, Vol. 203 Issue 3/4, p300; Subject Term: PULSED laser deposition; Subject Term: SPUTTERING (Physics); Subject Term: NANOPARTICLES; Subject Term: CARBON; Subject Term: SILICON; Subject Term: LIQUID nitrogen; Subject Term: EVAPORATION (Chemistry); Author-Supplied Keyword: Laser; Author-Supplied Keyword: Magnetron sputtering; Author-Supplied Keyword: MAPLE; Author-Supplied Keyword: Nanocomposite; Author-Supplied Keyword: Nanopearls; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.surfcoat.2008.09.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35069685&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Han, Sang-Wook AU - Oh, Se-Jin AU - Tan, Loon-Seng AU - Baek, Jong-Beom T1 - One-pot purification and functionalization of single-walled carbon nanotubes in less-corrosive poly(phosphoric acid) JO - Carbon JF - Carbon Y1 - 2008/11/15/ VL - 46 IS - 14 M3 - Article SP - 1841 EP - 1849 SN - 00086223 AB - Abstract: As-received commercial single-walled carbon nanotubes (SWCNTs) were treated in mild, inorganic polyacid, viz. polyphosphoric acid (PPA) with or without additional phosphorous pentoxide (P2O5) at 130, 160, and 190°C. Unlike the treatment in strong acids such as nitric acid/sulfuric acid mixtures, nitric acid and hydrochloric acid, PPA with or without additional P2O5 could selectively remove the tenacious carbonaceous and metallic impurities with little or no damage to the basic frameworks of SWCNTs and crystalline carbon materials. Since the medium PPA/P2O5 is known for an efficient “direct” Friedel-Crafts acylation using a carboxylic acid instead of a carboxylic acid chloride, it provides the advantage of combining both purification and functionalization steps into a one-pot process in manufacturing of functionalized SWCNTs. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - PHOSPHORIC acid KW - PHOSPHORIC anhydride KW - CRYSTALLINE polymers KW - CARBON composites KW - FRIEDEL-Crafts reaction N1 - Accession Number: 34772794; Han, Sang-Wook 1 Oh, Se-Jin 1 Tan, Loon-Seng 2 Baek, Jong-Beom 1,3; Email Address: jbbaek@unist.ac.kr; Affiliation: 1: School of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 361-763, South Korea 2: Nanostructured and Biological Materials Branch, Materials and Manufacturing Directorate, AFRL/RXBN, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433-7750, United States 3: Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-805 South Korea; Source Info: Nov2008, Vol. 46 Issue 14, p1841; Subject Term: CARBON nanotubes; Subject Term: PHOSPHORIC acid; Subject Term: PHOSPHORIC anhydride; Subject Term: CRYSTALLINE polymers; Subject Term: CARBON composites; Subject Term: FRIEDEL-Crafts reaction; NAICS/Industry Codes: 325312 Phosphatic Fertilizer Manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.carbon.2008.07.026 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34772794&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Hwa-Jeong AU - Han, Sang-Wook AU - Kwon, Young-Do AU - Tan, Loon-Seng AU - Baek, Jong-Beom T1 - Functionalization of multi-walled carbon nanotubes with various 4-substituted benzoic acids in mild polyphosphoric acid/phosphorous pentoxide JO - Carbon JF - Carbon Y1 - 2008/11/15/ VL - 46 IS - 14 M3 - Article SP - 1850 EP - 1859 SN - 00086223 AB - Abstract: Functionalization of multi-walled carbon nanotubes (MWCNTs) with various 4-substituted benzoic acids (BAcs) was conducted by using “direct” Friedel–Crafts acylation in mild polyphosphoric acid/phosphorous pentoxide. The degree of functionalization was studied using thermogravimetric analysis, elemental analysis, infrared spectroscopy, scanning electron microscopy, and transmission electron microscopy. The overall evidence indicated that the MWCNTs had remained structurally intact as a result of the reaction. The more reactive BAcs showed that the larger arylcarbonyl moieties were covalently attached onto the surface of MWCNTs. The resultant functionalized MWCNTs (F-MWCNTs) formed bundles with average diameters of 40–70nm depending on the polarity of the surface groups. The diameter dimensions of bundles were closely related to surface polarities of F-MWCNTs. The solubility/dispersibility and thermal properties of F-MWCNTs were also greatly influenced by the nature of the substituted groups. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - BENZOIC acid KW - PHOSPHORIC anhydride KW - FRIEDEL-Crafts reaction KW - THERMOGRAVIMETRY KW - INFRARED spectroscopy KW - ACYLATION N1 - Accession Number: 34772795; Lee, Hwa-Jeong 1 Han, Sang-Wook 1 Kwon, Young-Do 1 Tan, Loon-Seng 2 Baek, Jong-Beom 1,3; Email Address: jbbaek@unist.ac.kr; Affiliation: 1: School of Chemical Engineering, Chungbuk National University, 12 Gaeshin, Heungduk, Cheongju, Chungbuk 361-763, South Korea 2: Materials and Manufacturing Directorate, US Air Force Research Laboratory, AFRL/RXBN, Wright-Patterson AFB, OH 45433, USA 3: Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-805 South Korea; Source Info: Nov2008, Vol. 46 Issue 14, p1850; Subject Term: CARBON nanotubes; Subject Term: BENZOIC acid; Subject Term: PHOSPHORIC anhydride; Subject Term: FRIEDEL-Crafts reaction; Subject Term: THERMOGRAVIMETRY; Subject Term: INFRARED spectroscopy; Subject Term: ACYLATION; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.carbon.2008.07.027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34772795&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Steckl, A. J. AU - Spaeth, H. AU - Singh, K. AU - Grote, J. AU - Naik, R. T1 - Chirality of sulforhodamine dye molecules incorporated in DNA thin films. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/11/10/ VL - 93 IS - 19 M3 - Article SP - 193903 PB - American Institute of Physics SN - 00036951 AB - Thin films formed from salmon sperm DNA reacted with a cationic surfactant (CTMA-Cl) included up to 25 wt % fluorescent molecule sulforhodamine (SRh). SRh effect on DNA chirality and vice versa was investigated by circular dichroism (CD) spectroscopy. The CD signals at 250–265 nm indicate that DNA chirality was maintained or enhanced. Induced CD (iCD) signal at 580–610 nm indicates that SRh is chiral in DNA/CTMA. iCD signal from both solutions and thin films generally increases with SRh concentration. The chirality induced in SRh molecules and the absence of significant DNA reduction in chirality are clear indicators of strong binding to DNA/CTMA. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHIRALITY KW - DYES & dyeing KW - THIN films KW - DNA KW - SURFACE active agents KW - ENANTIOMERS N1 - Accession Number: 35514248; Steckl, A. J. 1; Email Address: a.steckl@uc.edu Spaeth, H. 1 Singh, K. 2 Grote, J. 2 Naik, R. 2; Affiliation: 1: Nanoelectronics Laboratory, University of Cincinnati, Cincinnati, Ohio 45221-0030, USA 2: US Air Force Research Laboratory, WPAFB, Ohio 45433-7707, USA; Source Info: 11/10/2008, Vol. 93 Issue 19, p193903; Subject Term: CHIRALITY; Subject Term: DYES & dyeing; Subject Term: THIN films; Subject Term: DNA; Subject Term: SURFACE active agents; Subject Term: ENANTIOMERS; NAICS/Industry Codes: 325130 Synthetic Dye and Pigment Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.3027070 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35514248&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, Y. I. AU - Park, G. J. AU - Kolonay, R. M. AU - Blair, M. AU - Canfield, R. A. T1 - Nonlinear Response Structural Optimization of a Joined Wing Using Equivalent Loads. JO - AIAA Journal JF - AIAA Journal Y1 - 2008/11// VL - 46 IS - 11 M3 - Article SP - 2703 EP - 2703 SN - 00011452 AB - The joined wing is a new concept of the airplane wing. The forewing and the aft wing are joined together in the joined wing. The joined wing can lead to increased aerodynamic performances and reduction of the structural weight. The structural behavior of the joined wing has a high geometric nonlinearity according to the external loads. Therefore, the nonlinear behavior should be considered in the optimization of the joined wing. It is well known that conventional nonlinear response optimization is extremely expensive; thus, the conventional method is almost impossible to use for large-scale structures such as the joined wing. In this research, geometric nonlinear response optimization of a joined wing is carried out by using equivalent loads. The used structure is a joined wing that is currently being developed in the U.S. Air Force Research Laboratory. Equivalent loads are the load sets that generate the same response field in linear analysis as that from nonlinear analysis. In the equivalent loads method, the external loads are transformed to the equivalent loads for linear static analysis, and linear response optimization is carried out based on the equivalent loads. The design is updated by the results of linear response optimization. Nonlinear analysis is carried out again and the process proceeds in a cyclic manner until the convergence criteria are satisfied. It was verified that the equivalent loads method is equivalent to a gradient-based method; therefore, the solution is the same as that of exact nonlinear response optimization. The fully stressed design method is also used for nonlinear response optimization of a joined wing. The results from the fully stressed design and the equivalent loads method are compared. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - AERODYNAMICS KW - NONLINEAR theories KW - STRUCTURAL analysis (Engineering) KW - STRUCTURAL engineering KW - STRUCTURAL dynamics N1 - Accession Number: 35126876; Kim, Y. I. 1 Park, G. J. 1; Email Address: gjpark@hanyang.ac.kr Kolonay, R. M. 2 Blair, M. 2 Canfield, R. A. 2; Affiliation: 1: Hanyang University, Ansan City, 426-791, Republic of Korea. 2: U.S. Air Force Research Laboratory, Wright—Patterson Air Force Base, Ohio 45433.; Source Info: Nov2008, Vol. 46 Issue 11, p2703; Subject Term: AIRPLANE wings; Subject Term: AERODYNAMICS; Subject Term: NONLINEAR theories; Subject Term: STRUCTURAL analysis (Engineering); Subject Term: STRUCTURAL engineering; Subject Term: STRUCTURAL dynamics; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35126876&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Enloe, C. L. AU - Font, G. I. AU - McLaughlin, T. E. AU - Orlov, D. M. T1 - Surface Potential and Longitudinal Electric Field Measurements in the Aerodynamic Plasma Actuator. JO - AIAA Journal JF - AIAA Journal Y1 - 2008/11// VL - 46 IS - 11 M3 - Article SP - 2730 EP - 2730 SN - 00011452 AB - We present the results of a series of measurements in which an array of capacitive V-dot probes are used to determine the surface potential in a single dielectric barrier discharge plasma operated as an aerodynamic plasma actuator. From these measurements. we determine the longitudinal electric field in the plasma. The results show that the surface immediately (within the first alternating current cycle of the plasma discharge) acquires a net positive surface charge, so that the electric field in the plasma is asymmetric, the magnitude of the maximum field being more than 50% larger in the negative than the positive polarity. The measurements also show that there is a region several millimeters downstream from the exposed electrode edge over which the electric field maintains a constant positive (downstream) polarity over the course of the discharge cycle. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRICS KW - PLASMA (Ionized gases) KW - ACTUATORS KW - ELECTRIC potential KW - ELECTRIC currents KW - ELECTRIC fields KW - ELECTRODES N1 - Accession Number: 35126879; Enloe, C. L. 1 Font, G. I. 1 McLaughlin, T. E. 1 Orlov, D. M. 1; Affiliation: 1: United States Air Force Academy, Colorado 80840.; Source Info: Nov2008, Vol. 46 Issue 11, p2730; Subject Term: DIELECTRICS; Subject Term: PLASMA (Ionized gases); Subject Term: ACTUATORS; Subject Term: ELECTRIC potential; Subject Term: ELECTRIC currents; Subject Term: ELECTRIC fields; Subject Term: ELECTRODES; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35126879&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rettig, C. I. AU - Roquemore, W. M. AU - Gord, J. R. T1 - Efficiency and scaling of an ultrashort-pulse high-repetition-rate laser-driven X-ray source. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2008/11// VL - 93 IS - 2/3 M3 - Article SP - 365 EP - 372 PB - Springer Science & Business Media B.V. SN - 09462171 AB - Technical issues and performance of a high-repetition-rate ultrafast-laser-based X-ray source have been studied experimentally in the context of developing a dedicated laboratory-based tool for combustion diagnostics. X-ray emission from numerous elemental materials have been investigated to compare with analytical based expectations for yield and efficiency, as well as to evaluate advantages of some materials for operational issues such as debris production and degree of efficiency enhancement utilizing various illumination configurations. A weak inverse scaling of conversion efficiency with atomic number was observed. Broadband energy conversion efficiency of approximately 10−5 and yield greater than 1010 photons/s have been measured with numerous target elements. Application of a pre-pulse significantly enhances conversion efficiency, and the enhancement factor depends on material. Thus, previous optimizations must be performed in the atomic number variation as well. Additionally, the efficiency enhancement associated with p-polarization incidence (relative to s-polarization) is observed to depend on base material reflectivity. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - X-rays KW - REFLECTANCE KW - COMBUSTION KW - LIGHTING KW - OPTICAL polarization N1 - Accession Number: 35038755; Rettig, C. I. 1,2; Email Address: curt.rettig@spectra-physics.com Roquemore, W. M. 3 Gord, J. R. 3; Affiliation: 1: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Rd, Dayton, OH 45440, USA 2: Spectra-Physics, a Division of Newport, Mountain View, CA, USA 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: Nov2008, Vol. 93 Issue 2/3, p365; Subject Term: X-rays; Subject Term: REFLECTANCE; Subject Term: COMBUSTION; Subject Term: LIGHTING; Subject Term: OPTICAL polarization; NAICS/Industry Codes: 335129 Other Lighting Equipment Manufacturing; Number of Pages: 8p; Illustrations: 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1007/s00340-008-3151-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35038755&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dickerson, Matthew B. AU - Sandhage, Kenneth H. AU - Naik, Rajesh R. T1 - Protein- and Peptide-Directed Syntheses of Inorganic Materials. JO - Chemical Reviews JF - Chemical Reviews Y1 - 2008/11// VL - 108 IS - 11 M3 - Article SP - 4935 EP - 4978 SN - 00092665 AB - The article discusses the protein- and peptide-directed syntheses of inorganic materials such as ceramic oxides, semiconductors and metals. The article also discusses biosilicification, diatom silica-associated biomolecules, silica-associated proteins in sponges and sources of biomolecules for the biomimetic synthesis of materials. KW - BIOSYNTHESIS KW - PROTEINS KW - PEPTIDES KW - BIOMOLECULES KW - SILICA KW - DIATOMS N1 - Accession Number: 36080354; Dickerson, Matthew B. 1 Sandhage, Kenneth H. 2,3 Naik, Rajesh R. 1; Email Address: Rajesh.Naik@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7702 2: School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332-0245 3: School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332-0245; Source Info: Nov2008, Vol. 108 Issue 11, p4935; Subject Term: BIOSYNTHESIS; Subject Term: PROTEINS; Subject Term: PEPTIDES; Subject Term: BIOMOLECULES; Subject Term: SILICA; Subject Term: DIATOMS; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; Number of Pages: 44p; Illustrations: 2 Black and White Photographs, 45 Diagrams, 5 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36080354&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wendy J. Crookes-Goodson AU - Joseph M. Slocik AU - Rajesh R. Naik T1 - Bio-directed synthesis and assembly of nanomaterials. JO - Chemical Society Reviews JF - Chemical Society Reviews Y1 - 2008/11// VL - 37 IS - 11 M3 - Article SP - 2403 EP - 2412 SN - 14604744 AB - This tutorial review provides an overview of bio-directed synthesis of nanomaterials, starting with the foundation of biomineralization research—how organisms are able to biomineralize materials in vivo—and progressing to studies of biomineralization in vitro. This research is of interest to biologists, chemists and materials scientists alike, especially in light of efforts to find ‘greener’ methods of inorganic material synthesis. Examples of applications of nanomaterials synthesized by these methods are provided to demonstrate the end goals of biomineralization research. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemical Society Reviews is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOMINERALIZATION KW - MINERALS in the body KW - BIOLOGISTS KW - CHEMISTS N1 - Accession Number: 34912099; Wendy J. Crookes-Goodson 1 Joseph M. Slocik 1 Rajesh R. Naik 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB Dayton USA rajesh.naik@wpafb.af.mil; Source Info: Nov2008, Vol. 37 Issue 11, p2403; Subject Term: BIOMINERALIZATION; Subject Term: MINERALS in the body; Subject Term: BIOLOGISTS; Subject Term: CHEMISTS; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34912099&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Graupner, K. AU - Graham, L.M. AU - Field, T.A. AU - Mayhew, C.A. AU - Fabrikant, I.I. AU - Miller, T.M. AU - Braun, M. AU - Ruf, M.-W. AU - Hotop, H. T1 - Highly resolved absolute cross-sections for dissociative electron attachment to SF5CF3 JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2008/11// VL - 277 IS - 1-3 M3 - Article SP - 113 EP - 122 SN - 13873806 AB - Abstract: Using two complementary experimental methods, we have measured partial (mass-resolved) cross-sections for dissociative electron attachment to the molecule trifluoromethyl sulfurpentafluoride (SF5CF3) at the gas temperature T G =300K over a broad range of electron energies (E =0.001–12eV). The absolute scale for these cross-sections was obtained with reference to the thermal (T =300K) rate coefficient for anion formation (8.0(3)×10−8 cm3 s−1). Below 1eV, SF5− is the dominant product anion and formed through the lowest anion state which cuts the neutral SF5CF3 potential close to the S–C equilibrium distance. The highly resolved laser photoelectron attachment data exhibit a downward Wigner cusp at 86meV, indicating that the ν 4(a 1) vibrational mode is important for the primary attachment dynamics. Both SF5− and F− anions are formed with similar yields through the first excited resonance located near 3.6eV. Towards higher energies, the anions CF3−, SF4−, and SF3− are also produced. Summation of the partial cross-sections yields a total absolute cross-section for anion formation over the energy range 0.001–12eV. This is used to calculate the dependence of the rate coefficient for dissociative electron attachment over a broad range of electron temperatures for the fixed gas temperature T G =300K; good agreement is found between the calculated values and those obtained in a drift tube experiment. In addition to the experimental work, semiempirical R-matrix calculations have been carried out for the energy dependence of the cross-section for SF5− formation. The experimental findings are semi-quantitatively recovered. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISSOCIATION (Chemistry) KW - ELECTRONS KW - ELECTRON energy loss spectroscopy KW - ANIONS KW - Branching ratio KW - Cross-section KW - Electron attachment KW - R-matrix calculation KW - SF5CF3 N1 - Accession Number: 34747337; Graupner, K. 1 Graham, L.M. 1 Field, T.A. 1 Mayhew, C.A. 2 Fabrikant, I.I. 3 Miller, T.M. 4 Braun, M. 5 Ruf, M.-W. 5 Hotop, H. 5; Email Address: hotop@physik.uni-kl.de; Affiliation: 1: Department of Physics and Astronomy, Queen's University, Belfast BT7 1NN, UK 2: School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK 3: Department of Physics and Astronomy, University of Nebraska, Lincoln, NE 68588-0111, USA 4: Air Force Research Laboratory, Hanscom Air Force Base, Bedford, MA 01731-3010, USA 5: Fachbereich Physik, Technische Universität Kaiserslautern, D-67653 Kaiserslautern, Germany; Source Info: Nov2008, Vol. 277 Issue 1-3, p113; Subject Term: DISSOCIATION (Chemistry); Subject Term: ELECTRONS; Subject Term: ELECTRON energy loss spectroscopy; Subject Term: ANIONS; Author-Supplied Keyword: Branching ratio; Author-Supplied Keyword: Cross-section; Author-Supplied Keyword: Electron attachment; Author-Supplied Keyword: R-matrix calculation; Author-Supplied Keyword: SF5CF3; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijms.2008.05.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34747337&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baird, Leemon AU - Fagin, Barry T1 - Conservation Functions for 1-D Automata: Efficient Algorithms, New Results, and a Partial Taxonomy. JO - Journal of Cellular Automata JF - Journal of Cellular Automata Y1 - 2008/11// VL - 3 IS - 4 M3 - Article SP - 271 EP - 288 SN - 15575969 AB - We present theorems that can be used for improved efficiency in the calculation of conservation functions for cellular automata. We report results obtained from implementations of algorithms based on these theorems that show conservation laws for 1-D cellular automata of higher order than any previously known. We introduce the notion of trivial and core conservation functions to distinguish truly new conservation functions from simple extensions of lower-order ones. We then present the complete list of conservation functions up to order 16 for the 256 elementary 1-d binary cellular automata. These include CAs that were not previously known to have nontrivial conservation functions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Cellular Automata is the property of Old City Publishing, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CELLULAR automata KW - ALGORITHMS KW - FUNCTIONS (Mathematics) KW - TAXONOMY KW - SET theory KW - Cellular automata KW - classification scheme KW - conservation functions KW - linear algebra KW - taxonomy N1 - Accession Number: 33132796; Baird, Leemon 1; Email Address: barry.fagin@usafa.edu Fagin, Barry 1; Affiliation: 1: Department of Computer Science, US Air Force Academy, Colorado Springs, CO 80840; Source Info: 2008, Vol. 3 Issue 4, p271; Subject Term: CELLULAR automata; Subject Term: ALGORITHMS; Subject Term: FUNCTIONS (Mathematics); Subject Term: TAXONOMY; Subject Term: SET theory; Author-Supplied Keyword: Cellular automata; Author-Supplied Keyword: classification scheme; Author-Supplied Keyword: conservation functions; Author-Supplied Keyword: linear algebra; Author-Supplied Keyword: taxonomy; Number of Pages: 18p; Illustrations: 4 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33132796&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Scott-Emuakpor, Onome E. AU - Shen, Herman AU - George, Tommy AU - Cross, Charles T1 - An Energy-Based Uniaxial Fatigue Life Prediction Method for Commonly Used Gas Turbing Engine Materials. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2008/11// VL - 130 IS - 6 M3 - Article SP - 4:1 EP - 4:15 SN - 07424795 AB - A new energy-based life prediction framework for calculation of axial and bending fatigue results at various stress ratios has been developed. The purpose of the life prediction framework is to assess the behavior of materials used in gas turbine engines, such as Titanium 6Al-4V (Ti 6A1-4V) and Aluminum 6061-T6 (Al 6061-T6). The work conducted to develop this energy-based framework consists of the following entities. (1) a new life prediction criterion for axial and bending fatigue at various stress ratios for Al 6061-T6, (2) the use of the previously developed improved uniaxial energy-based method to acquire fatigue life prior to endurance limit region (Scott-Emuakpor et a!., 2007, "Development of an Improved High Cycle Fatigue Criterion," ASME J. Eng. Gas Turbines Power, 129, pp. 162-169), (3) and the incorporation of a probabilistic energy-based fatigue life calculation scheme to the general uniaxial life criterion (the first entity of the frame- work), which is capable of constructing prediction intervals based on a specified percent confidence level. The precision of this work was verified by comparison between theoretical approximations and experimental results from recently acquired Al 606-T6 and Ti 6A1-4V data. The comparison shows very good agreement, thus validating the capability of the framework to produce accurate uniaxial fatigue life predictions for commonly used gas turbine engine materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AXIAL loads KW - STRAINS & stresses (Mechanics) KW - MATERIALS -- Fatigue KW - TITANIUM KW - ALUMINUM KW - GAS turbines KW - INTERNAL combustion engines KW - ENGINEERING design KW - MECHANICAL engineering N1 - Accession Number: 35607162; Scott-Emuakpor, Onome E. 1 Shen, Herman 1; Email Address: shen.1@osu.edu George, Tommy 2 Cross, Charles 2; Email Address: shen.1@osu.edu; Affiliation: 1: Department of Mechanical Engineering, The Ohio State University, 206 West, 18th Avenue, Columbus, OH 43210 2: Air Force Research Laboratory, Propulsion Directorate, 1950 Fifth Street, Bldg. 18, Wright Patterson Air Force Base, OH 45433; Source Info: Nov2008, Vol. 130 Issue 6, p4:1; Subject Term: AXIAL loads; Subject Term: STRAINS & stresses (Mechanics); Subject Term: MATERIALS -- Fatigue; Subject Term: TITANIUM; Subject Term: ALUMINUM; Subject Term: GAS turbines; Subject Term: INTERNAL combustion engines; Subject Term: ENGINEERING design; Subject Term: MECHANICAL engineering; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 541330 Engineering Services; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; NAICS/Industry Codes: 336310 Motor Vehicle Gasoline Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 333619 Other engine and power transmission equipment manufacturing; NAICS/Industry Codes: 333618 Other Engine Equipment Manufacturing; NAICS/Industry Codes: 423830 Industrial Machinery and Equipment Merchant Wholesalers; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 15p; Illustrations: 4 Black and White Photographs, 1 Diagram, 5 Charts, 23 Graphs; Document Type: Article L3 - 10.1115/1.2943152 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35607162&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jeon, Seaho AU - So, Grace AU - Anandakathir, Robinson AU - Canteenwala, Taizoon AU - Loon-Seng Tan AU - Pritzker, Kenneth AU - Chiang, Long Y. T1 - Synthesis and Characterization of C60 Dyads with Highly Photoactive Dicyanoethylenylated Diphenylaminofluorene Chromophore Antenna. JO - Journal of Macromolecular Science: Pure & Applied Chemistry JF - Journal of Macromolecular Science: Pure & Applied Chemistry Y1 - 2008/11// VL - 45 IS - 11 M3 - Article SP - 918 EP - 925 PB - Taylor & Francis Ltd SN - 10601325 AB - We designed and synthesized a novel class of highly photoactive C60(> CPAF-Cn) nanostructures for their potential uses as photonic materials, using CPAF-Cn chromophore as the light-harvesting antenna. It is a part of our research effort on developing C60(> DPAF-Cn)-based nonlinear photonic organics. We extended the structural modification by chemical conversion of the keto group in C60(> DPAF-Cn) compound to a 1,1-dicyanoethylenyl moiety with stronger electron-withdrawing ability that resulted in a largely increased electronic polarization of the chromophore conjugate. Structural characterization of several C60(> CPAF-Cn) containing variable alkyl sidechains was made by various spectroscopic methods. Interestingly, the chemical modification leads to a large bathochromic shift of the major absorption band of C60(> CPAF-Cn) in the visible spectrum up to 600 nm and extending the photoresponsive capability of C60-DCE-DPAF nanostructures to longer red wavelengths than the parent C60(> DPAF-Cn) materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Macromolecular Science: Pure & Applied Chemistry is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURES KW - PHOTONICS KW - ANTENNAS (Electronics) KW - ABSORPTION KW - POLARIZATION (Electricity) KW - C60 dyads KW - C60M dyads KW - diphenylaminofluorene KW - photoactive antenna KW - photonic fullerenyl nanomaterials N1 - Accession Number: 34555396; Jeon, Seaho 1 So, Grace 2 Anandakathir, Robinson 1 Canteenwala, Taizoon 1 Loon-Seng Tan 3 Pritzker, Kenneth 2 Chiang, Long Y. 1; Email Address: Long_Chiang@uml.edu; Affiliation: 1: Department of Chemistry, University of Massachusetts Lowell, Lowell, MA 2: Department of Pathology and Laboratory Medicine, Mount Sinai Hospital and University of Toronto, Toronto, Canada 3: Materials & Manufacturing Directorate, AFRL/RXBN, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH; Source Info: Nov2008, Vol. 45 Issue 11, p918; Subject Term: NANOSTRUCTURES; Subject Term: PHOTONICS; Subject Term: ANTENNAS (Electronics); Subject Term: ABSORPTION; Subject Term: POLARIZATION (Electricity); Author-Supplied Keyword: C60 dyads; Author-Supplied Keyword: C60M dyads; Author-Supplied Keyword: diphenylaminofluorene; Author-Supplied Keyword: photoactive antenna; Author-Supplied Keyword: photonic fullerenyl nanomaterials; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 8p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1080/10601320802380125 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34555396&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Berger, Karen T. AU - Greene, Frank A. AU - Kimmel, Roger AU - Alba, Christopher AU - Johnson, Heath T1 - Aerothermodynamic Testing and Boundary-Layer Trip Sizing of the HIFiRE Flight 1 Vehicle. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2008/11//Nov/Dec2008 VL - 45 IS - 6 M3 - Article SP - 1117 EP - 1124 SN - 00224650 AB - An experimental wind-tunnel test was conducted in the NASA Langley Research Center's 20 in. Mach 6 air tunnel in support of the Hypersonic International Flight Research Experimentation Program. The information in this paper focuses on the flight 1 configuration, the first in a series of flight experiments. The paper documents the experimental measurements made over Reynolds numbers ranging from 2.1 to 5.6 x 106/ft and angles of attack from -5 to +5 deg on several scaled ceramic heat-transfer models of the flight 1 configuration. Global heal transfer was measured using phosphor thermography, and the resulting images and beat4ransfer distributions were used to infer the state of the boundary layer on the vehicle wind- and it, e-side surfaces. Boundary-layer trips were used to obtain turbulent heating information, and the experimental data highlighted in this paper were used to size and place the boundary-layer trip for the flight vehicle. The required height of the flight boundary-layer trip was determined to be 0.079 in., and the trip was moved from the design location of 7.87 to 20.47 in. to ensure that augmented heating would not impact the laminar side of the vehicle. The allowable roughness was selected to be 3.2 x 10-3 in. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIND tunnels KW - AERODYNAMICS KW - EARTHWORK KW - REMOTE sensing KW - MINING engineering KW - UNITED States. National Aeronautics & Space Administration N1 - Accession Number: 36002663; Berger, Karen T. 1 Greene, Frank A. 1 Kimmel, Roger 2 Alba, Christopher 3 Johnson, Heath 3; Affiliation: 1: NASA Langley Research Center, Hampton, Virginia 23681 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 3: University of Minnesota, Minneapolis, Minnesota 55455; Source Info: Nov/Dec2008, Vol. 45 Issue 6, p1117; Subject Term: WIND tunnels; Subject Term: AERODYNAMICS; Subject Term: EARTHWORK; Subject Term: REMOTE sensing; Subject Term: MINING engineering; Company/Entity: UNITED States. National Aeronautics & Space Administration; NAICS/Industry Codes: 541330 Engineering Services; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 8p; Illustrations: 2 Black and White Photographs, 3 Diagrams, 2 Charts, 11 Graphs; Document Type: Article L3 - 10.2514/1.38722 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36002663&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Griffin, Steven AU - Lane, Steven A. AU - Lazzaro, Anthony T1 - Active Vibroacoustic Device for Noise Reduction in Launch Vehicles. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2008/11//Nov/Dec2008 VL - 45 IS - 6 M3 - Article SP - 1282 EP - 1292 SN - 00224650 AB - This paper presents the development of a noise mitigation device for launch vehicle failings and the performance of the device as measured from sounding rocket experiments conducted by the U.S. Air Force Research Laboratory, Space Vehicles Directorate. A new modeling approach to predict the internal acoustic response particular to sounding rockets is presented wherein the interior noise results from the time varying accelerations acting through the forward bulkhead. This model is different from typical approaches used for payload fairing noise prediction in which the primary noise sources are the rocket motors. This model would also apply to rockets of a similar aspect ratio and acceleration profile. The active acoustic absorber presented in this work can be tuned for optimal performance just minutes before launch. Acceleration and acoustic measurements from two sounding rocket launches are presented to validate the modeling approach and to demonstrate the performance of the active acoustic absorber. Data showed that a single device achieved an 8.8 dB reduction in the sound pressure level from 20 to 300 Hz. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UPPER atmosphere -- Rocket observations KW - AERONAUTICS in meteorology KW - ROCKET engines KW - INDUSTRIAL management KW - SPACE vehicles KW - ROCKETS (Aeronautics) N1 - Accession Number: 36002679; Griffin, Steven 1 Lane, Steven A. 2 Lazzaro, Anthony 1; Affiliation: 1: Boeing-SVS, Inc., Albuquerque, New Mexico 87106 2: U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117; Source Info: Nov/Dec2008, Vol. 45 Issue 6, p1282; Subject Term: UPPER atmosphere -- Rocket observations; Subject Term: AERONAUTICS in meteorology; Subject Term: ROCKET engines; Subject Term: INDUSTRIAL management; Subject Term: SPACE vehicles; Subject Term: ROCKETS (Aeronautics); NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 11p; Illustrations: 1 Color Photograph, 2 Black and White Photographs, 3 Diagrams, 1 Chart, 20 Graphs; Document Type: Article L3 - 10.2514/1.36787 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36002679&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fechine, P. B. A. AU - Moretzsohn, R. S. T. AU - Costa, R. C. S. AU - Derov, J. AU - Stewart, J. W. AU - Drehman, A. J. AU - Junqueira, C. AU - Sombra, A. S. B. T1 - Magneto-dielectric properties of the Y3Fe5O12 and Gd3Fe5O12 dielectric ferrite resonator antennas. JO - Microwave & Optical Technology Letters JF - Microwave & Optical Technology Letters Y1 - 2008/11// VL - 50 IS - 11 M3 - Article SP - 2852 EP - 2857 SN - 08952477 AB - The main objective of this work was to study the magnetic and dielectric properties of Y3Fe5O12 and Gd3Fe5O12 garnets resonator antennas obtained from a new procedure in the solid state ceramic technique. These ferrite resonator antennas (FRAs) had the ability to change their characteristics as a function of the applied magnetic field. The Y3Fe5O12 resonator was able to increase the antenna frequency range with application of external magnetic field. Some of the properties of dielectric resonator antennas (DRAs) can be actively controlled by using low-loss ferrite materials. When unbiased, these ferrite resonator antennas (FRAs) exhibit similar behavior to DRAs. However, when a DC magnetic bias is applied, the tensor nature of the ferrite permeability is invoked, and various parameters can be controlled electronically. We also studied the magnetic behavior of the antennas and did a numerical study of the gain and directivity of the ferrite resonator antennas. These results can be important to develop wideband third-generation (3G) cellular phones and other wireless products. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2852–2857, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23824 [ABSTRACT FROM AUTHOR] AB - Copyright of Microwave & Optical Technology Letters is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRICS KW - FERRITES (Magnetic materials) KW - ELECTRIC resonators KW - ANTENNAS (Electronics) KW - GARNET KW - RARE earth metals KW - ferrite KW - ferrite-resonator antennas KW - rare earth iron garnets KW - wideband antennas N1 - Accession Number: 34148251; Fechine, P. B. A. 1; Email Address: fechine@ufc.br Moretzsohn, R. S. T. 2 Costa, R. C. S. 2 Derov, J. 3 Stewart, J. W. 3 Drehman, A. J. 3 Junqueira, C. 4 Sombra, A. S. B. 2; Affiliation: 1: Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará (UFC), Campus do Pici, CP 12100, CEP 60451-970 Fortaleza--CE, Brasil 2: Laboratório de Telecomunicações e Ciência e Engenharia de Materiais (LOCEM) Departamento de Física, Universidade Federal do Ceará (UFC), Brasil 3: Air Force Research Laboratory, Sensors Directorate, 80 Scott Drive, Hanscom AFB, MA 4: Centro Técnico Aeroespacial (CTA)/Instituto de Aeronáutica e Espaço (IAE) Divisão de Eletrônica-AEL, CEP 12228-904, São José dos Campos, SP, Brasil; Source Info: Nov2008, Vol. 50 Issue 11, p2852; Subject Term: DIELECTRICS; Subject Term: FERRITES (Magnetic materials); Subject Term: ELECTRIC resonators; Subject Term: ANTENNAS (Electronics); Subject Term: GARNET; Subject Term: RARE earth metals; Author-Supplied Keyword: ferrite; Author-Supplied Keyword: ferrite-resonator antennas; Author-Supplied Keyword: rare earth iron garnets; Author-Supplied Keyword: wideband antennas; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 6p; Illustrations: 1 Diagram, 4 Charts, 7 Graphs; Document Type: Article L3 - 10.1002/mop.23824 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34148251&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Catano, Gabriel AU - Kulkarni, Hemant AU - Weijing He AU - Marconi, Vincent C. AU - Agan, Brian K. AU - Landrum, Michael AU - Anderson, Stephanie AU - Delmar, Judith AU - Telles, Vanessa AU - Li Song AU - Castiblanco, John AU - Clark, Robert A. AU - Dolan, Matthew J. AU - Ahuja, Sunil K. T1 - HIV-1 Disease-Influencing Effects Associated with ZNRD1, HCP5 and HLA-C Alleles Are Attributable Mainly to Either HLA-A10 or HLA-B*57 Alleles. JO - PLoS ONE JF - PLoS ONE Y1 - 2008/11// VL - 3 IS - 11 M3 - Article SP - 1 EP - 16 PB - Public Library of Science SN - 19326203 AB - A recent genome-wide association study (GWAS) suggested that polymorphisms in or around the genes HCP5, HLA-C and ZNRD1 confer restriction against HIV-1 viral replication or disease progression. Here, we also find that these alleles are associated with different aspects of HIV disease, albeit mainly in European Americans. Additionally, we offer that because the GWAS cohort was a subset of HIV-positive individuals, selected based in part on having a low viral load, the observed associations for viral load are magnified compared with those we detect in a large well-characterized prospective natural history cohort of HIV-1-infected persons. We also find that because of linkage disequilibrium (LD) patterns, the dominant viral load- and disease-influencing associations for the ZNRD1 or HLA-C and HCP5 alleles are apparent mainly when these alleles are present in HLA-A10- or HLA-B*57-containing haplotypes, respectively. ZNRD1 alleles lacking HLA-A10 did not confer disease protection whereas ZNRD1-A10 haplotypes did. When examined in isolation, the HCP5-G allele associates with a slow disease course and lower viral loads. However, in multivariate models, after partitioning out the protective effects of B*57, the HCP5-G allele associates with disease-acceleration and enhanced viral replication; these associations for HCP5-G are otherwise obscured because of the very strong LD between this allele and a subset of protective B*57 alleles. Furthermore, HCP5 and HLA-C alleles stratify B*57-containing genotypes into those that associate with either striking disease retardation or progressive disease, providing one explanation for the long-standing conundrum of why some HLA-B*57-carrying individuals are long-term non-progressors, whereas others exhibit progressive disease. Collectively, these data generally underscore the strong dependence of genotype-phenotype relationships upon cohort design, phenotype selection, LD patterns and populations studied. They specifically demonstrate that the influence of ZNRD1 alleles on disease progression rates are attributable to HLA-A10, help clarify the relationship between the HCP5, HLA-C and HLA-B*57 alleles, and reaffirm a critical role of HLA-B*57 alleles in HIV disease. Furthermore, as the protective B*57-containing genotypes convey striking salutary effects independent of their strong impact on viral control, it is conceivable that T cell-based therapeutic vaccine strategies aimed at reducing viral loads may be inadequate for limiting AIDS progression, raising the potential need for complementary strategies that target viral load-independent determinants of pathogenesis. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GENETIC polymorphisms KW - DISEASE progression KW - PREVENTIVE medicine KW - LYME disease KW - HIV infections KW - T cells KW - PHENOTYPE KW - VACCINATION KW - UNITED States N1 - Accession Number: 55666742; Catano, Gabriel 1,2 Kulkarni, Hemant 1,2 Weijing He 1,2 Marconi, Vincent C. 3,4 Agan, Brian K. 3,4,5 Landrum, Michael 3,4,5 Anderson, Stephanie 3,5 Delmar, Judith 3,4 Telles, Vanessa 1,2 Li Song 1,2 Castiblanco, John 1,2 Clark, Robert A. 1,2 Dolan, Matthew J. 3,4,5 Ahuja, Sunil K. 2,6,7; Email Address: ahujas@uthscsa.edu; Affiliation: 1: Veterans Administration Research Center for AIDS and HIV-1 Infection, South Texas Veterans Health Care System, San Antonio, Texas, United States of America 2: Department of Medicine, University of Texas Health Science Center, San Antonio, Texas, United States of America 3: Infectious Disease Clinical Research Program (IDCRP), Uniformed Services University of the Health Sciences, Bethesda, Maryland, United States of America 4: Infectious Disease Service, San Antonio Military Medical Center (SAMMC), Ft. Sam Houston, Texas, United States of America 5: Henry M. Jackson Foundation, Wilford Hall United States Air Force Medical Center, Lackland AFB, Texas, United States of America 6: Department of Microbiology and Immunology, University of Texas Health Science Center, San Antonio, Texas, United States of America 7: Department of Biochemistry, University of Texas Health Science Center, San Antonio, Texas, United States of America; Source Info: 2008, Vol. 3 Issue 11, p1; Subject Term: GENETIC polymorphisms; Subject Term: DISEASE progression; Subject Term: PREVENTIVE medicine; Subject Term: LYME disease; Subject Term: HIV infections; Subject Term: T cells; Subject Term: PHENOTYPE; Subject Term: VACCINATION; Subject Term: UNITED States; NAICS/Industry Codes: 923120 Administration of Public Health Programs; Number of Pages: 16p; Illustrations: 5 Charts, 3 Graphs; Document Type: Article L3 - 10.1371/journal.pone.0003636 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55666742&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kulkarni, Hemant AU - Marconi, Vincent C. AU - Agan, Brian K. AU - McArthur, Carole AU - Crawford, George AU - Clark, Robert A. AU - Dolan, Matthew J. AU - Ahuja, Sunil K. T1 - Role of CCL3L1-CCR5 Genotypes in the Epidemic Spread of HIV-1 and Evaluation of Vaccine Efficacy. JO - PLoS ONE JF - PLoS ONE Y1 - 2008/11// VL - 3 IS - 11 M3 - Article SP - 1 EP - 9 PB - Public Library of Science SN - 19326203 AB - Background: Polymorphisms in CCR5, the major coreceptor for HIV, and CCL3L1, a potent CCR5 ligand and HIV-suppressive chemokine, are determinants of HIV-AIDS susceptibility. Here, we mathematically modeled the potential impact of these genetic factors on the epidemic spread of HIV, as well as on its prevention. Methods and Results: Ro, the basic reproductive number, is a fundamental concept in explaining the emergence and persistence of epidemics. By modeling sexual transmission among HIV+/HIV2 partner pairs, we find that Ro estimates, and concordantly, the temporal and spatial patterns of HIV outgrowth are highly dependent on the infecting partners' CCL3L1- CCR5 genotype. Ro was least and highest when the infected partner possessed protective and detrimental CCL3L1-CCR5 genotypes, respectively. The modeling data indicate that in populations such as Pygmies with a high CCL3L1 gene dose and protective CCR5 genotypes, the spread of HIV might be minimal. Additionally, Pc, the critical vaccination proportion, an estimate of the fraction of the population that must be vaccinated successfully to eradicate an epidemic was <1 only when the infected partner had a protective CCL3L1-CCR5 genotype. Since in practice Pc cannot be >1, to prevent epidemic spread, population groups defined by specific CCL3L1-CCR5 genotypes might require repeated vaccination, or as our models suggest, a vaccine with an efficacy of .70%. Further, failure to account for CCL3L1-CCR5-based genetic risk might confound estimates of vaccine efficacy. For example, in a modeled trial of 500 subjects, misallocation of CCL3L1-CCR5 genotype of only 25 (5%) subjects between placebo and vaccine arms results in a relative error of ∼12% from the true vaccine efficacy. Conclusions: CCL3L1-CCR5 genotypes may impact on the dynamics of the HIV epidemic and, consequently, the observed heterogeneous global distribution of HIV infection. As Ro is lowest when the infecting partner has beneficial CCL3L1-CCR5 genotypes, we infer that therapeutic vaccines directed towards reducing the infectivity of the host may play a role in halting epidemic spread. Further, CCL3L1-CCR5 genotype may provide critical guidance for optimizing the design and evaluation of HIV-1 vaccine trials and prevention programs. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIDS (Disease) -- Vaccination KW - GENETIC polymorphisms KW - LIGANDS (Biochemistry) KW - IMMUNIZATION KW - GENOTYPE-environment interaction KW - SIMULATION methods & models KW - EPIDEMICS KW - CHEMOKINES KW - SOCIAL aspects KW - RISK factors N1 - Accession Number: 55666774; Kulkarni, Hemant 1; Email Address: kulkarnih@uthscsa.edu Marconi, Vincent C. 2,3,4 Agan, Brian K. 2 McArthur, Carole 5 Crawford, George 1 Clark, Robert A. 1 Dolan, Matthew J. 3,4,6 Ahuja, Sunil K. 1,7; Email Address: ahujas@uthscsa.edu; Affiliation: 1: Veterans Administration Research Center for AIDS and HIV-1 Infection, South Texas Veterans Health Care System, San Antonio, Texas, United States of America 2: Infectious Disease Clinical Research Program, Uniformed Services University of the Health Sciences, Bethesda, Maryland, United States of America 3: Infectious Disease Service, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas, United States of America 4: San Antonio Military Medical Center, Fort Sam Houston, Texas, United States of America 5: Department of Oral Biology, School of Dentistry, University of Missouri-Kansas City, Kansas City, Missouri, United States of America 6: Henry M. Jackson Foundation, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas, United States of America 7: Department of Medicine, Microbiology and Immunology and Biochemistry, University of Texas Health Science Center, San Antonio, Texas, United States of America; Source Info: 2008, Vol. 3 Issue 11, p1; Subject Term: AIDS (Disease) -- Vaccination; Subject Term: GENETIC polymorphisms; Subject Term: LIGANDS (Biochemistry); Subject Term: IMMUNIZATION; Subject Term: GENOTYPE-environment interaction; Subject Term: SIMULATION methods & models; Subject Term: EPIDEMICS; Subject Term: CHEMOKINES; Subject Term: SOCIAL aspects; Subject Term: RISK factors; Number of Pages: 9p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1371/journal.pone.0003671 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55666774&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Howard, Timothy A. AU - Tappin, S. James T1 - Three-Dimensional Reconstruction of Two Solar Coronal Mass Ejections Using the STEREO Spacecraft. JO - Solar Physics JF - Solar Physics Y1 - 2008/11// VL - 252 IS - 2 M3 - Article SP - 373 EP - 383 PB - Springer Science & Business Media B.V. SN - 00380938 AB - Previous attempts to produce three-dimensional (3-D) reconstructions of coronal mass ejections (CMEs) have required either modeling efforts or comparisons with secondary associated eruptions near the solar surface. This is because coronagraphs are only able to produce sky-plane-projected images of CMEs and it has hence been impossible to overcome projection effects by using coronagraphs alone. The SECCHI suite aboard the twin STEREO spacecraft allows us to provide the means for 3-D reconstruction of CMEs directly from coronagraph measurements alone for the first time. We present these measurements from two CMEs observed in November 2007. By identifying common features observed simultaneously with the LASCO coronagraphs aboard SOHO and the COR coronagraphs aboard STEREO we have triangulated the source region of both CMEs. We present the geometrical analysis required for this triangulation and identify the location of the CME in solar-meridional, ecliptic, and Carrington coordinates. None of the two events were associated with an easily detectable solar surface eruption, so this triangulation technique is the only means by which the source location of these CMEs could be identified. We present evidence that both CMEs originated from the same magnetic structure on the Sun, but from a different magnetic field configuration. Our results reveal some insight into the evolution of the high corona magnetic field, including its behavior over time scales of a few days and its reconfiguration after a major eruption. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORONAL mass ejections KW - SOLAR activity KW - CORONAGRAPHS KW - MAGNETIC fields KW - MATHEMATICAL models KW - Corona KW - Coronal mass ejection KW - Three-dimensional geometry N1 - Accession Number: 34982924; Howard, Timothy A. 1; Email Address: thoward@nso.edu Tappin, S. James 1; Email Address: jtappin@nso.edu; Affiliation: 1: Air Force Research Laboratory, National Solar Observatory, Sunspot, NM 88349, USA; Source Info: Nov2008, Vol. 252 Issue 2, p373; Subject Term: CORONAL mass ejections; Subject Term: SOLAR activity; Subject Term: CORONAGRAPHS; Subject Term: MAGNETIC fields; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: Corona; Author-Supplied Keyword: Coronal mass ejection; Author-Supplied Keyword: Three-dimensional geometry; Number of Pages: 11p; Illustrations: 2 Color Photographs, 2 Diagrams, 2 Charts, 1 Graph; Document Type: Article L3 - 10.1007/s11207-008-9262-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34982924&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Krupka, Oksana AU - El-ghayoury, Abdelkrim AU - Rau, Ileana AU - Sahraoui, Bouchta AU - Grote, James G. AU - Kajzar, Francois T1 - NLO properties of functionalized DNA thin films JO - Thin Solid Films JF - Thin Solid Films Y1 - 2008/10/31/ VL - 516 IS - 24 M3 - Article SP - 8932 EP - 8936 SN - 00406090 AB - Abstract: In this paper we investigate the third-order nonlinear optical properties of spin deposited thin films of DNA-based complexes using the optical third harmonic generation (THG) technique at a fundamental wavelength of 1064 nm. We found that the third-order susceptibility, χ (3)(− 3ω;ω,ω,ω), of DNA-based films was about one order of magnitude larger than that of our reference, a pure silica slab. In thin films doped with 5% of the chromophore disperse red 1 (DR1), a two order of magnitude larger value of χ (3)(− 3ω;ω,ω,ω) was observed. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films -- Optical properties KW - NONLINEAR optics KW - DNA KW - COMPLEX compounds KW - WAVELENGTHS KW - SOLID state electronics KW - Deoyribonucleic acid KW - DNA–surfactant complex KW - Functionalized DNA KW - Intercalation KW - NLO properties KW - Third harmonic generation N1 - Accession Number: 34532232; Krupka, Oksana 1; Email Address: okrupka@mail.ru El-ghayoury, Abdelkrim 2 Rau, Ileana 1 Sahraoui, Bouchta 1 Grote, James G. 3 Kajzar, Francois 1; Affiliation: 1: University d'Angers, Laboratoire POMA CNRS UMR 6136, France, 2 Bd. Lavoisier, 49045, France 2: University d'Angers, UFR Sciences, Laboratoire CIMMA UMR CNRS 6200, 2 Bd. Lavoisier, 49045, France 3: Air Force Research Laboratory Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, 3005 Hobson Way, Dayton, OH 45433-7707, USA; Source Info: Oct2008, Vol. 516 Issue 24, p8932; Subject Term: THIN films -- Optical properties; Subject Term: NONLINEAR optics; Subject Term: DNA; Subject Term: COMPLEX compounds; Subject Term: WAVELENGTHS; Subject Term: SOLID state electronics; Author-Supplied Keyword: Deoyribonucleic acid; Author-Supplied Keyword: DNA–surfactant complex; Author-Supplied Keyword: Functionalized DNA; Author-Supplied Keyword: Intercalation; Author-Supplied Keyword: NLO properties; Author-Supplied Keyword: Third harmonic generation; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.tsf.2007.11.089 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34532232&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Salem, A.A. AU - Glavicic, M.G. AU - Semiatin, S.L. T1 - A coupled EBSD/EDS method to determine the primary- and secondary-alpha textures in titanium alloys with duplex microstructures JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2008/10/25/ VL - 494 IS - 1/2 M3 - Article SP - 350 EP - 359 SN - 09215093 AB - Abstract: A method for separating the textures of primary alpha (αp) and secondary alpha (αs) in alpha/beta titanium alloys with a duplex microstructure was developed. Utilizing electron backscatter diffraction (EBSD) and energy-dispersive spectroscopy (EDS), the approach relies on the non-uniform partitioning of alloying elements between primary alpha and regions containing secondary-alpha lamellae and residual beta matrix phase. The method was evaluated using samples of Ti–6Al–4V for which vanadium partitions strongly to secondary alpha+beta regions. The technique thus provides a useful tool for quantifying the evolution of deformation texture in the primary alpha and transformation texture in secondary alpha formed via decomposition of the beta matrix following hot working or final heat treatment. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - CRYSTAL texture KW - MICROSTRUCTURE KW - PRIMARY aluminum KW - EBSD KW - EDS KW - Microstructure KW - Texture KW - Titanium N1 - Accession Number: 34145795; Salem, A.A. 1; Email Address: ayman.salem@wpafb.af.mil Glavicic, M.G. 2 Semiatin, S.L. 3; Affiliation: 1: Universal Technology Corp., 1270 N. Fairfield Road, Dayton, OH 45432, United States 2: UES Inc., 4401 Dayton-Xenia Road, Dayton, OH 45433, United States 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright-Patterson AFB, OH 45433, United States; Source Info: Oct2008, Vol. 494 Issue 1/2, p350; Subject Term: TITANIUM alloys; Subject Term: CRYSTAL texture; Subject Term: MICROSTRUCTURE; Subject Term: PRIMARY aluminum; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: EDS; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Texture; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.msea.2008.06.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34145795&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Basnyat, P. AU - Luster, B. AU - Muratore, C. AU - Voevodin, A.A. AU - Haasch, R. AU - Zakeri, R. AU - Kohli, P. AU - Aouadi, S.M. T1 - Surface texturing for adaptive solid lubrication JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2008/10/25/ VL - 203 IS - 1/2 M3 - Article SP - 73 EP - 79 SN - 02578972 AB - Abstract: The production of surface micro-patterns in steel substrates for solid lubricant (SL) reservoirs was previously shown to provide improved wear and frictional properties in sliding contact. We report on the fabrication of micrometer-sized dimple patterns of different sizes on TiAlCN hard coatings produced by cathodic arc vacuum evaporation. These dimples were produced by reactive ion etching in a mixed Ar/CF4 plasma. An overlayer of MoS2 or Mo/MoS2/Ag SLs was deposited on the micro-textured surfaces using unbalanced magnetron sputtering. The tribological properties of the coatings were investigated against Si3N4 in dry sliding at 25 °C and in air at 570 °C. The coatings and respective wear tracks were examined using scanning electron microscopy (SEM), optical microscopy (OM), optical profilometry (OP), energy dispersive x-ray spectroscopy (EDX), and micro-Raman spectroscopy. The frictional and wear properties of textured and flat surfaces were compared. A significant decrease in friction and wear coefficients was achieved at 25 °C and 570 °C for the textured films because the dimples acted as reservoirs that provided a new supply of SLs to the contact surfaces. The chemistry and phase analysis of the coating wear tracks showed temperature adaptive behavior with the lubrication being provided primarily by MoS2 at 25 °C and by silver and silver molybdate compounds at high temperature. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLID lubricants KW - LUBRICATION & lubricants KW - MAGNETRONS KW - MICROSCOPY KW - Friction KW - Solid lubricants KW - Texturing N1 - Accession Number: 34647762; Basnyat, P. 1 Luster, B. 1 Muratore, C. 2 Voevodin, A.A. 2 Haasch, R. 3 Zakeri, R. 4 Kohli, P. 4 Aouadi, S.M. 1; Email Address: saouadi@physics.siu.edu; Affiliation: 1: Department of Physics, Southern Illinois University, Carbondale, IL 62901-4401, USA 2: MLBT, Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, OH 45433-7750, USA 3: Center for Microanalysis of Materials, Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA 4: Department of Chemistry and Biochemistry, Southern Illinois University, Carbondale, IL 62901-4403, USA; Source Info: Oct2008, Vol. 203 Issue 1/2, p73; Subject Term: SOLID lubricants; Subject Term: LUBRICATION & lubricants; Subject Term: MAGNETRONS; Subject Term: MICROSCOPY; Author-Supplied Keyword: Friction; Author-Supplied Keyword: Solid lubricants; Author-Supplied Keyword: Texturing; NAICS/Industry Codes: 324191 Petroleum Lubricating Oil and Grease Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.surfcoat.2008.07.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34647762&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Trionfi, A. AU - Scrymgeour, D. A. AU - Hsu, J. W. P. AU - Arlen, M. J. AU - Tomlin, D. AU - Jacobs, J. D. AU - Wang, D. H. AU - Tan, L.-S. AU - Vaia, R. A. T1 - Direct imaging of current paths in multiwalled carbon nanofiber polymer nanocomposites using conducting-tip atomic force microscopy. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/10/15/ VL - 104 IS - 8 M3 - Article SP - 083708 PB - American Institute of Physics SN - 00218979 AB - Using conducting-tip atomic force microscopy (C-AFM), we study the spatial distribution of current paths and local electrical properties in carbon nanofiber/polymer nanocomposites. Previous studies of similar systems were hindered by a polymer-rich skin layer that exists at the nanocomposite surfaces. We present an experimental technique using oxygen plasma etching to controllably remove this polymer skin layer. After this treatment, we can directly probe the microscopic transport characteristics of the nanocomposite using C-AFM. The C-AFM results show that the electrical transport is solely carried by the carbon nanofiber (CNF) networks in the nanocomposites. In addition, high-resolution C-AFM maps show nonuniform distribution of current along the length of some CNFs, suggesting the presence of a heterogeneously distributed adsorbed polymer layer around nanofibers. Finally, two probe conductivity measurements in which one electrode (the C-AFM tip) is contacting a single constituent conducting particle were performed to study local conductivity. Results indicate that Ohmic pathways exist in the conducting network of the nanocomposite to the lowest measured nanofiber concentrations. However, non-Ohmic behavior indicating tunneling transport may also be present, especially near the percolation threshold. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURED materials KW - NANOFIBERS KW - POLYMERS KW - ATOMIC force microscopy KW - PLASMA etching N1 - Accession Number: 35041677; Trionfi, A. 1 Scrymgeour, D. A. 1 Hsu, J. W. P. 1 Arlen, M. J. 2 Tomlin, D. 2 Jacobs, J. D. 2 Wang, D. H. 2 Tan, L.-S. 2 Vaia, R. A. 2; Affiliation: 1: Sandia National Laboratories, Albuquerque, New Mexico 87185, 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433,; Source Info: Oct2008, Vol. 104 Issue 8, p083708; Subject Term: NANOSTRUCTURED materials; Subject Term: NANOFIBERS; Subject Term: POLYMERS; Subject Term: ATOMIC force microscopy; Subject Term: PLASMA etching; Number of Pages: 6p; Illustrations: 3 Color Photographs, 1 Black and White Photograph, 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1063/1.3000458 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35041677&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Samit AU - Singh, Sushil AU - Schoeppner, Gregory T1 - Modeling of evolving damage in high temperature polymer matrix composites subjected to thermal oxidation. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2008/10/15/ VL - 43 IS - 20 M3 - Article SP - 6651 EP - 6660 PB - Springer Science & Business Media B.V. SN - 00222461 AB - This paper describes mechanism-based modeling of damage evolution in high temperature polymer matrix composites (HTPMC) under thermo-oxidative aging conditions. Specifically, a multi-scale model based on micro-mechanics analysis in conjunction with continuum damage mechanics (CDM) is developed to simulate the accelerated fiber–matrix debond growth in the longitudinal direction of a unidirectional HTPMC. Using this approach, one can relate the behavior of composites at the micro-level (representative volume element) to the macro-level (structural element) in a computationally tractable manner. Thermo-oxidative aging is simulated with diffusion-reaction model in which temperature, oxygen concentration, and weight loss effects are considered. For debond growth simulation, a model based on Darcy’s laws for oxygen permeation in the fiber–matrix interface is employed, that, when coupled with polymer shrinkage, provides a mechanism for permeation-controlled debond growth in HTPMC. Benchmark of model prediction with experimental observations of oxidation layer growth is presented, together with a laminate thermo-oxidative life prediction model based on CDM to demonstrate proof-of-concept. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS -- Research KW - COMPOSITE materials -- Research KW - OXIDATION KW - SIMULATION methods & models KW - COMPUTER simulation KW - LAMINATED materials KW - CONTINUUM damage mechanics KW - MATERIALS science research N1 - Accession Number: 34983065; Roy, Samit 1; Email Address: sroy@eng.ua.edu Singh, Sushil 1 Schoeppner, Gregory 2; Affiliation: 1: Department of Aerospace Engineering and Mechanics , University of Alabama , Tuscaloosa 35487-0280 USA 2: Air Force Research Laboratory (AFRL), Materials and Manufacturing Directorate , Structural Materials Branch (MLBC), Wright-Patterson AFB , Dayton 45433-7750 USA; Source Info: Oct2008, Vol. 43 Issue 20, p6651; Subject Term: POLYMERS -- Research; Subject Term: COMPOSITE materials -- Research; Subject Term: OXIDATION; Subject Term: SIMULATION methods & models; Subject Term: COMPUTER simulation; Subject Term: LAMINATED materials; Subject Term: CONTINUUM damage mechanics; Subject Term: MATERIALS science research; Number of Pages: 10p; Illustrations: 4 Diagrams, 2 Charts, 6 Graphs; Document Type: Article L3 - 10.1007/s10853-008-2691-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34983065&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Putthanarat, S. AU - Tandon, G. AU - Schoeppner, G. T1 - Influence of aging temperature, time, and environment on thermo-oxidative behavior of PMR-15: nanomechanical characterization. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2008/10/15/ VL - 43 IS - 20 M3 - Article SP - 6714 EP - 6723 PB - Springer Science & Business Media B.V. SN - 00222461 AB - A series of PMR-15 resin specimens were isothermally aged at 288, 316, and 343 °C over a range of time. For PMR-15 aged at 288 °C, the samples were also subjected to different aging environments including: ambient air, dry air, inert (argon), and pressurized air (0.414 MPa). Nanoindentation was performed to characterize localized mechanical properties as well as the development and growth of the oxidative layer. The measured increase in stiffness in the specimen surface oxidation layer is a manifestation of the chemical changes in the polymer occurring during oxidation. The average elastic modulus in the oxidized region is relatively insensitive to variations in aging temperature, time, and the environments. The thickness of the oxidative layer is observed to increase in the early stages of oxidation and the oxidation process eventually approaches an auto-retardation state. Aging under elevated pressure increases the thickness growth rate of the oxidation layer, while there is no significant difference in growth rate for specimens aged in dry air versus those aged in ambient air. It is shown that the measured average thickness of the oxidation layer and the transition region determined by the nanoindenter is in good agreement with optical microscopy measurements for all conditions considered. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPOXY resins KW - RESEARCH KW - NANOELECTROMECHANICAL systems KW - NOBLE gases KW - MATERIALS -- Mechanical properties KW - POLYMERS -- Research KW - MICROSCOPY KW - OXIDATION KW - MATERIALS science research N1 - Accession Number: 34983058; Putthanarat, S. 1 Tandon, G. 1 Schoeppner, G. 2; Email Address: Greg.Schoeppner@wpafb.af.mil; Affiliation: 1: University of Dayton Research Institute , Dayton 45469-0060 USA 2: Air Force Research Laboratory/RXBC , WPAFB Dayton 45433-7750 USA; Source Info: Oct2008, Vol. 43 Issue 20, p6714; Subject Term: EPOXY resins; Subject Term: RESEARCH; Subject Term: NANOELECTROMECHANICAL systems; Subject Term: NOBLE gases; Subject Term: MATERIALS -- Mechanical properties; Subject Term: POLYMERS -- Research; Subject Term: MICROSCOPY; Subject Term: OXIDATION; Subject Term: MATERIALS science research; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; Number of Pages: 10p; Illustrations: 2 Diagrams, 7 Graphs; Document Type: Article L3 - 10.1007/s10853-008-2800-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34983058&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ungár, T. AU - Glavicic, M.G. AU - Balogh, L. AU - Nyilas, K. AU - Salem, A.A. AU - Ribárik, G. AU - Semiatin, S.L. T1 - The use of X-ray diffraction to determine slip and twinning activity in commercial-purity (CP) titanium JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2008/10/15/ VL - 493 IS - 1/2 M3 - Article SP - 79 EP - 85 SN - 09215093 AB - Abstract: High-resolution X-ray diffraction (XRD) line-profile analysis was used to characterize slip activity and twinning in commercial-purity titanium (CP-Ti) during hot rolling. The effect of {10.1} and {10.2} twins on XRD patterns was deduced using the DIFFAX software. The density of twin boundaries was then incorporated into the XRD pattern-fitting procedure for evaluating dislocation densities, slip activity, and subgrain size. It was found that 〈a〉 and 〈c + a〉 type slip occurred during hot rolling. The X-ray data revealed 0.07(±0.02)% twin-boundary frequency for the {10.2} twin family, but zero twinning (within the experimental accuracy) in the {10.1} family. Electron backscatter diffraction (EBSD) data confirmed the X-ray findings. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - X-rays KW - OPTICAL diffraction KW - TITANIUM KW - TWINNING (Crystallography) KW - Dislocation density KW - Slip activity KW - Titanium KW - Twinning KW - X-ray line profile analysis N1 - Accession Number: 34145707; Ungár, T. 1; Email Address: ungar@ludens.elte.hu Glavicic, M.G. 2,3 Balogh, L. 1 Nyilas, K. 1 Salem, A.A. 2,4 Ribárik, G. 1 Semiatin, S.L. 2; Affiliation: 1: Department of Materials Physics, Eötvös University Budapest, POB 32, H-1518 Budapest, Hungary 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright-Patterson Air Force Base, OH 45433, USA 3: UES Inc., Dayton, OH 45432, USA 4: Universal Technology Corporation, Dayton, OH 45432, USA; Source Info: Oct2008, Vol. 493 Issue 1/2, p79; Subject Term: X-rays; Subject Term: OPTICAL diffraction; Subject Term: TITANIUM; Subject Term: TWINNING (Crystallography); Author-Supplied Keyword: Dislocation density; Author-Supplied Keyword: Slip activity; Author-Supplied Keyword: Titanium; Author-Supplied Keyword: Twinning; Author-Supplied Keyword: X-ray line profile analysis; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.msea.2007.06.096 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34145707&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - C. Carlson AU - A. M. Schrand AU - L. K. Braydich-Stolle AU - K. L. Hess AU - R. L. Jones AU - J. J. Schlager AU - S. M. Hussain T1 - Unique Cellular Interaction of Silver Nanoparticles: Size-Dependent Generation of Reactive Oxygen Species. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2008/10/07/ VL - 112 IS - 43 M3 - Article SP - 13608 EP - 13619 SN - 15206106 AB - The rapid advancement of nanotechnology has created a vast array of engineered nanomaterials (ENMs) which have unique physical (size, shape, crystallinity, surface charge) and chemical (surface coating, elemental composition and solubility) attributes. These physicochemical properties of ENMs can produce chemical conditions to induce a pro-oxidant environment in the cells, causing an imbalanced cellular energy system dependent on redox potential and thereby leading to adverse biological consequences, ranging from the initiation of inflammatory pathways through to cell death. The present study was designed to evaluate size-dependent cellular interactions of known biologically active silver nanoparticles (NPs, Ag-15nm, Ag-30nm, and Ag-55nm). Alveolar macrophages provide the first defense and were studied for their potential role in initiating oxidative stress. Cell exposure produced morphologically abnormal sizes and adherence characteristics with significant NP uptake at high doses after 24 h. Toxicity evaluations using mitochondrial and cell membrane viability along with reactive oxygen species (ROS) were performed. After 24 h of exposure, viability metrics significantly decreased with increasing dose (10−75 μg/mL) of Ag-15nm and Ag-30nm NPs. A more than 10-fold increase of ROS levels in cells exposed to 50 μg/mL Ag-15nm suggests that the cytotoxicity of Ag-15nm is likely to be mediated through oxidative stress. In addition, activation of the release of traditional inflammatory mediators were examined by measuring levels of cytokines/chemokines, including tumor necrosis factor (TNF-α), macrophage inhibitory protein (MIP-2), and interleukin-6 (IL-6), released into the culture media. After 24 h of exposure to Ag-15nm nanoparticles, a significant inflammatory response was observed by the release of TNF-α, MIP-2, and IL-1β. However, there was no detectable level of IL-6 upon exposure to silver nanoparticles. In summary, a size-dependent toxicity was produced by silver nanoparticles, and one predominant mechanism of toxicity was found to be largely mediated through oxidative stress. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - CELL interaction (Biology) KW - PHOTOSYNTHETIC oxygen evolution KW - MACROPHAGES N1 - Accession Number: 34912052; C. Carlson 1 A. M. Schrand 1 L. K. Braydich-Stolle 1 K. L. Hess 1 R. L. Jones 1 J. J. Schlager 1 S. M. Hussain 1; Affiliation: 1: Applied Biotechnology Branch, Human Effectiveness Directorate, and Science Applications International Corporation, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433; Source Info: Oct2008, Vol. 112 Issue 43, p13608; Subject Term: NANOPARTICLES; Subject Term: CELL interaction (Biology); Subject Term: PHOTOSYNTHETIC oxygen evolution; Subject Term: MACROPHAGES; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34912052&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Drummond, Jack AU - Christou, Julian T1 - Triaxial ellipsoid dimensions and rotational poles of seven asteroids from Lick Observatory adaptive optics images, and of Ceres JO - ICARUS JF - ICARUS Y1 - 2008/10// VL - 197 IS - 2 M3 - Article SP - 480 EP - 496 SN - 00191035 AB - Abstract: Seven main belt asteroids, 2 Pallas, 3 Juno, 4 Vesta, 16 Psyche, 87 Sylvia, 324 Bamberga, and 707 Interamnia, were imaged with the adaptive optics system on the 3 m Shane telescope at Lick Observatory in the near infrared, and their triaxial ellipsoid dimensions and rotational poles have been determined with parametric blind deconvolution. In addition, the dimensions and pole for 1 Ceres are derived from resolved images at multiple epochs, even though it is an oblate spheroid. [Copyright &y& Elsevier] AB - Copyright of ICARUS is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASTEROIDS KW - TELESCOPES KW - SOLAR system KW - ASTRONOMY KW - CERES (Dwarf planet) KW - Adaptive optics KW - Asteroids N1 - Accession Number: 34446401; Drummond, Jack 1; Email Address: Jack.Drummond@kirtland.af.mil Christou, Julian 2; Affiliation: 1: Starfire Optical Range, Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117-5776, USA 2: Division of Astronomical Sciences, National Science Foundation, Arlington, VA 22203, USA; Source Info: Oct2008, Vol. 197 Issue 2, p480; Subject Term: ASTEROIDS; Subject Term: TELESCOPES; Subject Term: SOLAR system; Subject Term: ASTRONOMY; Subject Term: CERES (Dwarf planet); Author-Supplied Keyword: Adaptive optics; Author-Supplied Keyword: Asteroids; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 453999 All other miscellaneous store retailers (except beer and wine-making supplies stores); NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.icarus.2008.05.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34446401&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H. J. AU - Elhamri, S. AU - Brown, G. J. AU - Mitchel, W. C. T1 - Growth optimization for low residual carriers in undoped midinfrared InAs/GaSb superlattices. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/10// VL - 104 IS - 7 M3 - Article SP - 073111 PB - American Institute of Physics SN - 00218979 AB - Reducing residual background carriers in InAs/GaSb superlattices (SLs) is an essential task to increase the operating temperature of photoconductive devices. This paper discusses how low-temperature Hall measurements were used to tune several SL growth parameters for the minimum residual carriers in a typical midinfrared 21 Å InAs/24 Å GaSb SLs designed for the 4 μm cutoff wavelength. Among the three growth parameters studied, neither growth temperature nor in situ postannealing significantly affected the intrinsic carrier type and doping concentration. The lowest carrier density of 1.8×1011 cm-2 was achieved at 400 °C. All SLs grown at 400 °C maintained the lowest density around 1.6×1011 cm-2 with or without postannealing. However, in-plane carrier mobility showed a slight improvement with annealing, especially at temperatures above 450 °C. The growth parameter most sensitive to the carrier density was interface control. With a minor variation in interface shutter sequence, the carrier density dramatically increased from ∼2×1011 to 5×1012 cm-2, and the corresponding mobility dropped from 6600 to 26 cm2/V s, indicating dramatic degradation of interfacial quality. All SLs investigated in this study were residually p-type. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - INDIUM arsenide KW - GALLIUM (Metal) KW - ANTIMONY KW - INFRARED detectors KW - HALL effect KW - ANNEALING of crystals N1 - Accession Number: 34829112; Haugan, H. J. 1 Elhamri, S. 1 Brown, G. J. 1 Mitchel, W. C. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright–Patterson Air Force Base, Ohio 45433,; Source Info: Oct2008, Vol. 104 Issue 7, p073111; Subject Term: SUPERLATTICES; Subject Term: INDIUM arsenide; Subject Term: GALLIUM (Metal); Subject Term: ANTIMONY; Subject Term: INFRARED detectors; Subject Term: HALL effect; Subject Term: ANNEALING of crystals; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 4p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.2993748 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34829112&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Szmulowicz, F. AU - Haugan, H. J. AU - Brown, G. J. T1 - Analysis of (110) indium arsenide–gallium antimonide superlattices for infrared detection. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/10// VL - 104 IS - 7 M3 - Article SP - 074505 PB - American Institute of Physics SN - 00218979 AB - This paper presents an analysis of indium arsenide–gallium antimonide (InAs/GaSb) (110)-grown superlattices for use as infrared detectors. The analysis shows that InAs/GaSb superlattices grown on (110)-oriented substrates can be grown thinner, have higher mobilities, longer diffusion lengths, greater quantum efficiencies, and gains, thus higher responsivities, than those grown on (100)-oriented substrates for the same long wavelength threshold. Based on growth studies to date, (110) superlattices should also have higher minority carrier lifetimes, lower noise, and lower residual carrier densities, thus higher detectivities. The calculated electronic structure of a (110)-oriented superlattice based on the 8×8 envelope-function approximation shows the bands to be anisotropic and the oscillator strengths to be polarization dependent. Recommended layer widths for specific absorption thresholds are calculated. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - INFRARED detectors KW - INDIUM KW - ARSENIDES KW - GALLIUM (Metal) KW - ANTIMONY KW - DIFFUSION KW - ELECTRONIC structure N1 - Accession Number: 34829141; Szmulowicz, F. 1 Haugan, H. J. 2 Brown, G. J. 3; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469-0178, 2: Universal Technology Corporation, Dayton, Ohio 45432, 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: Oct2008, Vol. 104 Issue 7, p074505; Subject Term: SUPERLATTICES; Subject Term: INFRARED detectors; Subject Term: INDIUM; Subject Term: ARSENIDES; Subject Term: GALLIUM (Metal); Subject Term: ANTIMONY; Subject Term: DIFFUSION; Subject Term: ELECTRONIC structure; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 7p; Illustrations: 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.2990003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34829141&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eyink, Kurt G. AU - Tomich, David H. AU - Mitchel, William C. AU - Grazulis, Lawrence AU - Carlin, John A. AU - Mahalingam, Krishnamurthy AU - Jallipalli, Anitha AU - Balakrishnan, Ganesh AU - Huffaker, Diana AU - Elhamri, Said T1 - Electrical and structural characterization of a single GaSb/InAs/GaSb quantum well grown on GaAs using interface misfit dislocations. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/10// VL - 104 IS - 7 M3 - Article SP - 074901 PB - American Institute of Physics SN - 00218979 AB - Interface misfit formation has been used for the growth of high mobility GaSb/InAs single quantum wells (SQW) formed on GaAs substrates. The SQW structure was topped with 800 Å GaSb, followed by 100 Å GaSb:Si (5×108 cm-3), 10 nm GaSb, 10 nm InAs, and finally 250 nm GaSb on a GaAs substrate. The structural quality was examined using high resolution x-ray diffraction and transmission electron microscopy. Reciprocal space mapping indicated that the GaSb was completely relaxed. A high resolution x-ray rocking curve showed good agreement between the proposed structure and the simulation, assuming that all layers were relaxed to the GaSb lattice, and clearly showed interference fringing from individual layers. Atomic force microscopy showed the film appeared textured, and that the final growth occurred by step flow growth. The observed peak-to-peak roughness was 7 nm over a 100×100 μm2 square area. Plane view transmission electron microscopy analysis showed a nearly regular array of Lomer dislocations responsible for the relaxation of the strain in the two films. The mobility of the SQW was measured as a function of temperature. The room temperature mobility was 13 900 cm2/V s and a peak mobility of 25 200 cm2/V s was observed at ∼60 K, and remained nearly constant at lower temperatures. The sheet concentration was 2.3×1012/cm2 at room temperature, and dropped to 7.35×1011/cm2 at 60 K. Magnetoresistance measurements revealed the presence of Shubnikov–de Haas oscillations at 1.2 K; indicating the presence of a good quality two-dimensional electron gas (2DEG). Further support for the high quality of the 2DEG is provided by the observation of sharply defined quantum Hall plateaus. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM wells KW - GALLIUM arsenide KW - SUBSTRATES (Materials science) KW - DISLOCATIONS in crystals KW - MAGNETORESISTANCE KW - TRANSMISSION electron microscopy KW - ELECTRON gas KW - OSCILLATIONS N1 - Accession Number: 34829215; Eyink, Kurt G. 1 Tomich, David H. 1 Mitchel, William C. 1 Grazulis, Lawrence 1 Carlin, John A. 1 Mahalingam, Krishnamurthy 1 Jallipalli, Anitha 2 Balakrishnan, Ganesh 3 Huffaker, Diana 2,3,4 Elhamri, Said 5; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXPS, Wright-Patterson AFB, Ohio 45433-7707, 2: Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87106, 3: California Nano Systems Institute, University of California Los Angeles, Los Angeles, California 90095, 4: Department of Electrical Engineering, University of California Los Angeles, Los Angeles, California 90095, 5: Department of Physics, University of Dayton, Dayton, Ohio 45469-2314; Source Info: Oct2008, Vol. 104 Issue 7, p074901; Subject Term: QUANTUM wells; Subject Term: GALLIUM arsenide; Subject Term: SUBSTRATES (Materials science); Subject Term: DISLOCATIONS in crystals; Subject Term: MAGNETORESISTANCE; Subject Term: TRANSMISSION electron microscopy; Subject Term: ELECTRON gas; Subject Term: OSCILLATIONS; Number of Pages: 5p; Illustrations: 2 Black and White Photographs, 4 Graphs; Document Type: Article L3 - 10.1063/1.2982277 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34829215&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shah, Sandeep R. AU - Chokshi, Atul H. AU - Raj, Rishi T1 - Porous Al2O3-Spinel Based Polycrystals That Resist Free-Sintering. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2008/10// VL - 91 IS - 10 M3 - Article SP - 3451 EP - 3454 PB - Wiley-Blackwell SN - 00027820 AB - We show that increasing MgO content in Al2O3 from 0.25 to 10 wt% has a remarkable effect on the sintering behavior. While 0.25 wt% specimens sinter to near full density, the higher weight percent sample could be sintered to a maximum of 92% relative density even when held for 24 h at 1673 K. The resistance of the pores to sintering is ascribed to a reduction in the driving force for sintering (rather than to kinetics). The volume fraction of the pores increases with the fraction of the spinel phase, which forms by a reaction between magnesia and alumina. These findings raise the promise of membranes that can be tailored for pore size and pore volume, for high temperature applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SINTERING KW - ALUMINUM oxide KW - HIGH temperature plasmas KW - SPINEL KW - DYNAMICS KW - MAGNESIUM oxide KW - MEMBRANES (Technology) N1 - Accession Number: 34571612; Shah, Sandeep R. 1 Chokshi, Atul H. 2 Raj, Rishi 3; Email Address: rishi.raj@colorado.edu; Affiliation: 1: Department of Engineering Mechanics, Center for Aircraft Structural Life Extension (CAStLE), United States Air Force, Academy, USAF Academy, Colorado 80840, USA 2: Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India 3: Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309-0427, USA; Source Info: Oct2008, Vol. 91 Issue 10, p3451; Subject Term: SINTERING; Subject Term: ALUMINUM oxide; Subject Term: HIGH temperature plasmas; Subject Term: SPINEL; Subject Term: DYNAMICS; Subject Term: MAGNESIUM oxide; Subject Term: MEMBRANES (Technology); NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 325411 Medicinal and Botanical Manufacturing; NAICS/Industry Codes: 212210 Iron Ore Mining; Number of Pages: 4p; Illustrations: 1 Diagram, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2008.02622.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34571612&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Talbot, Brent J. AU - Harriman, Heidi T1 - Disarming Hezbollah. JO - Mediterranean Quarterly JF - Mediterranean Quarterly Y1 - 2008///Fall2008 VL - 19 IS - 4 M3 - Article SP - 29 EP - 53 PB - Duke University Press SN - 10474552 AB - In this article the authors discuss Hezbollah, the Lebanon-based political and terror organization. They note that Hezbollah has had a negative effect on security in the Middle East and through the organization Syria and Iran exert excessive pressure on the government of Lebanon. The article offers advice on ways to disarm Hezbollah thus reducing its influence. KW - TERRORISTS KW - DISARMAMENT KW - LEBANON -- Politics & government -- 1990- KW - LEBANON KW - HIZBALLAH (Lebanon) N1 - Accession Number: 35619165; Talbot, Brent J. 1,2 Harriman, Heidi 3; Affiliation: 1: Associate professor of military strategic studies, US Air Force Academy 2: Adjunct professor, University of Denver 3: University of Denver's Korbel School of International Studies; Source Info: Fall2008, Vol. 19 Issue 4, p29; Subject Term: TERRORISTS; Subject Term: DISARMAMENT; Subject Term: LEBANON -- Politics & government -- 1990-; Subject Term: LEBANON; Company/Entity: HIZBALLAH (Lebanon); Number of Pages: 26p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35619165&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - J. Hu AU - R. Wheeler AU - J. Zabinski AU - P. Shade AU - A. Shiveley AU - A. Voevodin T1 - Transmission Electron Microscopy Analysis of Mo–W–S–Se Film Sliding Contact Obtained by Using Focused Ion Beam Microscope and In Situ Microtribometer. JO - Tribology Letters JF - Tribology Letters Y1 - 2008/10// VL - 32 IS - 1 M3 - Article SP - 49 EP - 57 SN - 10238883 AB - Abstract  To better understand the fundamentals of solid lubrication, microstructural analyses on the wear scar surface and contact interface of Mo–W–S–Se composite films produced by pulsed laser deposition were completed. Focused ion beam (FIB), transmission electron microscopy (TEM), and X-ray energy dispersive spectroscopy were employed to study the cross-sectional microstructure and chemistry of wear scars. In particular, a novel microtribometer was built for in situ tribological measurements within a FIB microscope. The sliding tip was welded in contact to the wear scar surface on the film under load by re-deposition of sputtering materials from the FIB cut of the tip. Using this technique, cross-sectional TEM specimens were prepared precisely at the contact point without tip/film separation. Here, the in situ FIB microtribometer is critically important for retaining the microstructure of lubricant films as formed at the sliding contact interface between the tip and film without separation. It provides the unique ability to stop sliding, section the contact, and reveal microstructural changes to that contact without disrupting the sliding interface. The cross-sectional TEM measurements were performed on the sliding contact interface for both the regions in contact and just past contact, and both the reorientation and recrystallization of lubricant films were revealed. [ABSTRACT FROM AUTHOR] AB - Copyright of Tribology Letters is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSMISSION electron microscopy KW - BEARINGS (Machinery) KW - PULSED laser deposition KW - COATING processes N1 - Accession Number: 34561505; J. Hu 1 R. Wheeler 1 J. Zabinski 1 P. Shade 1 A. Shiveley 1 A. Voevodin 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory (AFRL/RXBT), Wright-Patterson Air Force Base Bldg. 654, 2941 Hobson Way, Room 10 Dayton OH 45433-7750 USA; Source Info: Oct2008, Vol. 32 Issue 1, p49; Subject Term: TRANSMISSION electron microscopy; Subject Term: BEARINGS (Machinery); Subject Term: PULSED laser deposition; Subject Term: COATING processes; NAICS/Industry Codes: 332991 Ball and Roller Bearing Manufacturing; NAICS/Industry Codes: 423840 Industrial Supplies Merchant Wholesalers; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34561505&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hendrik Heinz AU - R. A. Vaia AU - H. Koerner AU - B. L. Farmer T1 - Photoisomerization of Azobenzene Grafted to Layered Silicates: Simulation and Experimental Challenges. JO - Chemistry of Materials JF - Chemistry of Materials Y1 - 2008/09/25/ VL - 20 IS - 20 M3 - Article SP - 6444 EP - 6456 SN - 08974756 AB - Molecular dynamics (MD) simulation has been employed to examine the molecular-level orientation and reorganization of model azobenzene derivatives in the interlayer space of layered silicates upon laser excitation in comparison with existing X-ray diffraction data and UV/vis absorption measurements. MD results show uniform reversible changes in basal plane spacing of montmorillonite up to 2.8 Å (14%) upon trans−cis isomerization of attached photoactive surfactants such as (4,4′-phenylazophenyl)diammonium ions and (4-phenylazophenyl)ammonium ions. Uniform, significant reponses are supported by the presence of cointercalate to compensate changes in interlayer density, by conformational rigidity and upright orientation of the azobenzene-containing surfactants on the mineral surface, and a medium-to-high packing density. Experimentally, Okada et al. have shown nonuniform reversible optical switching of the gallery height for semiflexible surfactants up to 10 Å (41%) in the presence of phenol and uniform reversible optical switching of 0.9 Å (4%) without cointercalates [Okada et al. J. Mater. Chem.2005, 15, 987−992]. Further experimental data also show the absence of changes in gallery spacing for azobenzene derivatives with attached flexible hydrocarbon chains at low packing density without cointercalates and are explained by simulation. From a methods viewpoint, an approach is introduced to simulate the photoisomerization reaction using classical molecular dynamics, taking quantitatively into account the input of photon energy, the time scale of the isomerization (∼1 ps), and the relative energies of the trans and of the cis isomer, as well as the thermal conversion barrier. A temporary modification of the CNNC torsion potential describes the input of photon (excitation) energy, which can be applied to common force fields (including PCFF, OPLS-AA, COMPASS, CVFF, AMBER, CHARMM) and facilitates the simulation of the photoisomerization reaction as a function of molecular environment, pressure, temperature, and excitation time. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemistry of Materials is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR dynamics -- Simulation methods KW - AZOBENZENE -- Derivatives KW - SILICATES KW - PHOTOISOMERIZATION KW - MATHEMATICAL models N1 - Accession Number: 34871344; Hendrik Heinz 1 R. A. Vaia 1 H. Koerner 1 B. L. Farmer 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433, and Department of Polymer Engineering, University of Akron, Akron, Ohio 44325; Source Info: Sep2008, Vol. 20 Issue 20, p6444; Subject Term: MOLECULAR dynamics -- Simulation methods; Subject Term: AZOBENZENE -- Derivatives; Subject Term: SILICATES; Subject Term: PHOTOISOMERIZATION; Subject Term: MATHEMATICAL models; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34871344&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hung, K. M. AU - Cheng, T. H. AU - Huang, W. P. AU - Wang, K. Y. AU - Cheng, H. H. AU - Sun, G. AU - Soref, R. A. T1 - Electron tunneling in a strained n-type Si1-xGex/Si/Si1-xGex double-barrier structure. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/09/22/ VL - 93 IS - 12 M3 - Article SP - 123509 PB - American Institute of Physics SN - 00036951 AB - We report electrical measurements on an n-type Si1-xGex/Si/Si1-xGex double-barrier structure grown on a partially relaxed Si1-yGey buffer layer. Resonance tunneling of Δ4 band electrons is demonstrated. This is attributed to the strain splitting in the SiGe buffer layer where the Δ4 band is lowest in energy at the electrode. Since the Δ4 band electrons have a much lighter effective mass along the direction of tunneling current in comparison with that of the Δ2 band electrons, this work presents an advantage over those SiGe resonant-tunneling diodes in which tunneling of Δ2 band electrons is employed. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS research KW - TUNNELING (Physics) KW - RESEARCH KW - ELECTRIC conductivity KW - TUNNELING spectroscopy KW - ELECTRONS KW - ELECTRODES N1 - Accession Number: 34647354; Hung, K. M. 1 Cheng, T. H. 2 Huang, W. P. 2 Wang, K. Y. 2 Cheng, H. H. 2; Email Address: hhcheng@ntu.edu.tw Sun, G. 3 Soref, R. A. 4; Affiliation: 1: Department of Electronics Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 807, Taiwan 2: Center for Condensed Matter Sciences and Graduate Institute of Electronics Engineering, National Taiwan University, Taipei 106, Taiwan 3: Department of Physics, University of Massachusetts–Boston, Boston, Massachusetts 02125, USA 4: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, Massachusetts 01731, USA; Source Info: 9/22/2008, Vol. 93 Issue 12, p123509; Subject Term: PHYSICS research; Subject Term: TUNNELING (Physics); Subject Term: RESEARCH; Subject Term: ELECTRIC conductivity; Subject Term: TUNNELING spectroscopy; Subject Term: ELECTRONS; Subject Term: ELECTRODES; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.2991295 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34647354&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hrozhyk, Uladzimir A. AU - Serak, Svetlana V. AU - Tabiryan, Nelson V. AU - Bunning, Timothy J. T1 - Phototunable reflection notches of cholesteric liquid crystals. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/09/15/ VL - 104 IS - 6 M3 - Article SP - 063102 PB - American Institute of Physics SN - 00218979 AB - The reflection notch of cholesteric liquid crystals (CLCs) formed from highly photosenstive azobenzene nematic liquid crystals doped with light-insensitive, large helical twisting power chiral dopants is shown to be widely phototunable by green laser beams. The nonlinear transmission properties of these materials were studied. We have shown that the relative shift in Bragg wavelength is independent of the chiral dopant concentration and develop a predictive theory of such behavior. The theory describes the dynamics of phototuning as well. Reflection shifts greater than 150 nm were driven with low power, cw of 532 nm in these photosensitive CLCs, previously attainable only through UV pre-exposure. A nonlinear feedback mechanism was demonstrated for CLCs of left, right, and both handedness upon laser-induced blueshifting of the reflection notch from a red wavelength using a green cw laser. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REFLECTION (Optics) KW - LIQUID crystals KW - LASER beams KW - CHIRALITY KW - WAVELENGTHS N1 - Accession Number: 34622137; Hrozhyk, Uladzimir A. 1 Serak, Svetlana V. 1 Tabiryan, Nelson V. 1,2 Bunning, Timothy J. 2; Affiliation: 1: Beam Engineering for Advanced Measurements Co., Winter Park, Florida, 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7707,; Source Info: Sep2008, Vol. 104 Issue 6, p063102; Subject Term: REFLECTION (Optics); Subject Term: LIQUID crystals; Subject Term: LASER beams; Subject Term: CHIRALITY; Subject Term: WAVELENGTHS; Number of Pages: 7p; Illustrations: 1 Color Photograph, 3 Diagrams, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1063/1.2977666 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34622137&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Look, D. C. T1 - Two-layer Hall-effect model with arbitrary surface-donor profiles: application to ZnO. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/09/15/ VL - 104 IS - 6 M3 - Article SP - 063718 PB - American Institute of Physics SN - 00218979 AB - A complete two-layer Hall-effect model, allowing arbitrary donor and acceptor profiles, is presented and applied to the problem of conductive surface layers in ZnO. Temperature-dependent mobility and carrier concentration data in the temperature range of 20–320 K are fitted with an efficient algorithm easily implemented in commercial mathematics programs such as MATHCAD. The model is applied to two ZnO samples, grown by the melt (MLT) and hydrothermal (HYD) processes, respectively. Under the assumption of a “square” surface-donor profile, the fitted surface-layer thicknesses are 48 and 2.5 nm, respectively, for the MLT and HYD samples. The surface-donor concentrations are 7.6×1017 and 8.3×1018 cm-3, and the integrated surface-donor concentrations are 2.1×1012 and 3.6×1012 cm-2. For an assumed Gaussian [NDs(0)exp(-z2/ds2)] donor profile, the fitted values of ds are nearly the same as those for the square profile. The values of ND,s(0) are about 50% larger and the integrated donor-concentration values are about 15% larger, for both samples. As a surface-analysis tool, the Hall effect is extremely sensitive and applicable over a wide range of surface-layer conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HALL effect KW - ZINC oxide KW - ALGORITHMS KW - MATHEMATICAL programming KW - MATHEMATICAL models KW - SCATTERING (Physics) N1 - Accession Number: 34621971; Look, D. C. 1,2; Affiliation: 1: Semiconductor Research Center, Wright State University, Dayton, Ohio 45435, 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: Sep2008, Vol. 104 Issue 6, p063718; Subject Term: HALL effect; Subject Term: ZINC oxide; Subject Term: ALGORITHMS; Subject Term: MATHEMATICAL programming; Subject Term: MATHEMATICAL models; Subject Term: SCATTERING (Physics); NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 7p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.2986143 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34621971&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Young, D. AU - Sukeshini, A.M. AU - Cummins, R. AU - Xiao, H. AU - Rottmayer, M. AU - Reitz, T. T1 - Ink-jet printing of electrolyte and anode functional layer for solid oxide fuel cells JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2008/09/15/ VL - 184 IS - 1 M3 - Article SP - 191 EP - 196 SN - 03787753 AB - Abstract: In this work, solid oxide fuel cells were fabricated by ink-jet printing. The cells were characterized in order to study the resulting microstructure and electrochemical performance. Scanning electron microscopy revealed a highly conformal 6–12μm thick dense yttria-stabilized zirconia electrolyte layer, and a porous anode-interlayer. Open circuit voltages ranged from 0.95 to 1.06V, and a maximum power density of 0.175Wcm−2 was achieved at 750°C. These results suggest that the ink-jet printing technique may be used to fabricate stable SOFC structures that are comparable to those fabricated by more conventional ceramics processing methods. This study also highlights the significance of overall cell microstructural impact on cell performance and stability. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC batteries KW - ELECTROLYTES KW - SOLID oxide fuel cells KW - SCANNING electron microscopy KW - Anode functional layer KW - Ink-jet printing KW - Microstructure KW - SOFC KW - YSZ electrolyte N1 - Accession Number: 33528614; Young, D. 1 Sukeshini, A.M. 1; Email Address: mary.ayyadurai.ctr@wpafb.af.mil Cummins, R. 1 Xiao, H. 2 Rottmayer, M. 3 Reitz, T. 3; Affiliation: 1: Department of Mechanical and Materials Engineering, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH 45430, United States 2: Aerospace Power and Propulsion, UES Corp., Dayton, OH 45432, United States 3: The Air Force Research Laboratory, Propulsion Directorate, 1950 Fifth Street, Building 18, Wright-Patterson Air Force Base, OH 45433, United States; Source Info: Sep2008, Vol. 184 Issue 1, p191; Subject Term: ELECTRIC batteries; Subject Term: ELECTROLYTES; Subject Term: SOLID oxide fuel cells; Subject Term: SCANNING electron microscopy; Author-Supplied Keyword: Anode functional layer; Author-Supplied Keyword: Ink-jet printing; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: SOFC; Author-Supplied Keyword: YSZ electrolyte; NAICS/Industry Codes: 335910 Battery manufacturing; NAICS/Industry Codes: 418990 All other merchant wholesalers; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jpowsour.2008.06.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33528614&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Enlow, Jesse O. AU - Jiang, Hao AU - Grant, John T. AU - Eyink, Kurt AU - Su, Weijie AU - Bunning, Timothy J. T1 - Plasma polymerized ferrocene films JO - Polymer JF - Polymer Y1 - 2008/09/09/ VL - 49 IS - 19 M3 - Article SP - 4042 EP - 4045 SN - 00323861 AB - Abstract: This communication describes the formation of high index of refraction polymer thin films using a novel plasma polymerization deposition process. A flowing afterglow plasma reactor was modified to enable sublimation of solid samples into the gas phase for subsequent plasma polymerization. Thin films of plasma polymerized ferrocene were deposited on substrates and subsequently characterized. The refractive index as a function of processing conditions was obtained. Relatively high values of n (∼1.73 at 589nm) were obtained. The chemical nature of the polymer thin films was characterized using FTIR and XPS spectroscopy. This work demonstrates that plasma polymerization is an enabling technology for the fabrication of photonic thin films that utilize solid state precursors. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - POLYMERS KW - PLASMA polymerization KW - FERROCENE KW - SUBSTRATES (Materials science) KW - X-ray photoelectron spectroscopy KW - Ferrocene KW - Photonic thin film KW - Plasma polymerization N1 - Accession Number: 34091814; Enlow, Jesse O. 1 Jiang, Hao 2 Grant, John T. 3 Eyink, Kurt 1 Su, Weijie 4 Bunning, Timothy J. 1; Email Address: timothy.bunning@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, 3005 Hobson Way, WPAFB, Dayton, OH 45433, United States 2: Materials Science and Technical Applications, LLC, Dayton, OH 45458, United States 3: Research Institute, University of Dayton, Dayton, OH 45469, United States 4: AT&T Government Solutions, Dayton, OH 45324, United States; Source Info: Sep2008, Vol. 49 Issue 19, p4042; Subject Term: THIN films; Subject Term: POLYMERS; Subject Term: PLASMA polymerization; Subject Term: FERROCENE; Subject Term: SUBSTRATES (Materials science); Subject Term: X-ray photoelectron spectroscopy; Author-Supplied Keyword: Ferrocene; Author-Supplied Keyword: Photonic thin film; Author-Supplied Keyword: Plasma polymerization; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.polymer.2008.07.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34091814&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O.N. AU - Shagiev, M.R. AU - Senkova, S.V. AU - Miracle, D.B. T1 - Precipitation of Al3(Sc,Zr) particles in an Al–Zn–Mg–Cu–Sc–Zr alloy during conventional solution heat treatment and its effect on tensile properties JO - Acta Materialia JF - Acta Materialia Y1 - 2008/09// VL - 56 IS - 15 M3 - Article SP - 3723 EP - 3738 SN - 13596454 AB - Abstract: The effect of heat treatment on precipitation and growth of coherent nanometer-sized Al3(Sc,Zr) particles and the effect of these particles on tensile properties of a direct chill (DC) cast Al–Zn–Mg–Cu–Sc–Zr alloy were studied. The size distribution, average size, number density and volume fraction of the Al3(Sc,Zr) particles were determined as a function of the solution treatment temperature and time. An increase in the solution treatment temperature and time resulted in Al3(Sc,Zr) particles with a larger mean diameter, higher volume fraction and lower number density. The particle size distributions were described well by normal (Gaussian) distributions. The kinetics of the phase transformation followed the Kolmogorov–Johnson–Mehl–Avrami law, with the Avrami exponent m =0.404. Room temperature tensile properties were evaluated in the as-solution treated and artificially aged conditions. The coherent nanometer-sized Al3(Sc,Zr) particles provided additional Orowan strengthening, which increased with increasing particle volume fraction and decreasing particle size, and varied from 75 to 118MPa after different heat treatments. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM alloys KW - PHASE transformations (Physics) KW - ATMOSPHERIC temperature KW - ZIRCONIUM KW - Aging KW - Aluminum alloys KW - Isothermal heat treatments KW - Phase transformation kinetics KW - Precipitation N1 - Accession Number: 33632283; Senkov, O.N. 1; Email Address: oleg.senkov@wpafb.af.mil Shagiev, M.R. 1 Senkova, S.V. 1 Miracle, D.B. 2; Affiliation: 1: UES Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432-1894, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Sep2008, Vol. 56 Issue 15, p3723; Subject Term: ALUMINUM alloys; Subject Term: PHASE transformations (Physics); Subject Term: ATMOSPHERIC temperature; Subject Term: ZIRCONIUM; Author-Supplied Keyword: Aging; Author-Supplied Keyword: Aluminum alloys; Author-Supplied Keyword: Isothermal heat treatments; Author-Supplied Keyword: Phase transformation kinetics; Author-Supplied Keyword: Precipitation; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.actamat.2008.04.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33632283&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Qian, L. AU - Solomon, S.C. AU - Roble, R.G. AU - Bowman, B.R. AU - Marcos, F.A. T1 - Thermospheric neutral density response to solar forcing JO - Advances in Space Research JF - Advances in Space Research Y1 - 2008/09// VL - 42 IS - 5 M3 - Article SP - 926 EP - 932 SN - 02731177 AB - Abstract: Recent measurements by the Solar EUV (Extreme Ultra Violet) Experiment (SEE) aboard the Thermosphere–Ionosphere–Mesosphere Energetics and Dynamics satellite (TIMED) provide solar EUV spectral irradiance with adequate spectral and temporal resolution, and thus the opportunity to use solar measurements directly in upper atmospheric general circulation models. Thermospheric neutral density is simulated with the NCAR Thermosphere–Ionosphere–Electrodynamic General Circulation Model (TIEGCM) using TIMED/SEE measurements and using the EUVAC solar proxy model. Neutral density is also calculated using the NRLMSISE-00 empirical model. These modeled densities are then compared to density measurements derived from satellite drag data. It is found that using measured solar irradiance in the general circulation model can improve density calculations compared to using the solar proxy model. It is also found that the general circulation model can improve upon the empirical model in simulating geomagnetic storm effects and the solar cycle variation of neutral density. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UPPER atmosphere KW - SPECTRAL irradiance KW - ARTIFICIAL satellites in telecommunication KW - SOLAR energy KW - Density variation KW - Empirical model KW - General circulation model KW - Solar energy deposition KW - Solar spectral irradiance KW - Thermospheric neutral density N1 - Accession Number: 32983218; Qian, L. 1; Email Address: lqian@ucar.edu Solomon, S.C. 1 Roble, R.G. 1 Bowman, B.R. 2 Marcos, F.A. 3; Affiliation: 1: National Center for Atmospheric Research, Boulder, CO, USA 2: Air Force Space Command, Colorado Spring, CO, USA 3: Air Force Research Laboratory, Hanscom Air Force Base, MA, USA; Source Info: Sep2008, Vol. 42 Issue 5, p926; Subject Term: UPPER atmosphere; Subject Term: SPECTRAL irradiance; Subject Term: ARTIFICIAL satellites in telecommunication; Subject Term: SOLAR energy; Author-Supplied Keyword: Density variation; Author-Supplied Keyword: Empirical model; Author-Supplied Keyword: General circulation model; Author-Supplied Keyword: Solar energy deposition; Author-Supplied Keyword: Solar spectral irradiance; Author-Supplied Keyword: Thermospheric neutral density; NAICS/Industry Codes: 517410 Satellite Telecommunications; NAICS/Industry Codes: 221114 Solar Electric Power Generation; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.asr.2007.10.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32983218&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ning Chai AU - Naik, Sameer V. AU - Laurendeau, Normand M. AU - Lucht, Robert P. AU - Roy, Sukesh AU - Gord, James R. T1 - Single-laser-shot detection of nitric oxide in reacting flows using electronic resonance enhanced coherent anti-Stokes Raman scattering. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/09//9/1/2008 VL - 93 IS - 9 M3 - Article SP - 091115 PB - American Institute of Physics SN - 00036951 AB - Single-laser-shot electronic resonance enhanced coherent anti-Stokes Raman scattering (ERE-CARS) spectra of nitric oxide (NO) were generated using the 532 nm output of an injection-seeded Nd:YAG (yttrium aluminum garnet) laser as the pump beam, a broadband dye laser at approximately 591 nm as the Stokes beam, and a 236 nm narrowband ultraviolet probe beam. Single-laser-shot ERE-CARS spectra of NO were acquired in an atmospheric-pressure hydrogen/air counterflow diffusion flame. The single-shot detection limit in this flame was found to be approximately 30 ppm, and the standard deviation of the measured NO concentration was found to be approximately 20% of the mean. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHT -- Scattering KW - RAMAN effect KW - NITROGEN compounds KW - NITRIC oxide KW - SOLID solutions KW - RESONANCE KW - MATTER -- Properties N1 - Accession Number: 34360681; Ning Chai 1; Email Address: nchai@purdue.edu Naik, Sameer V. 1 Laurendeau, Normand M. 1 Lucht, Robert P. 1 Roy, Sukesh 2 Gord, James R. 3; Affiliation: 1: School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907-2088, USA 2: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, Ohio 45440, USA 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 9/1/2008, Vol. 93 Issue 9, p091115; Subject Term: LIGHT -- Scattering; Subject Term: RAMAN effect; Subject Term: NITROGEN compounds; Subject Term: NITRIC oxide; Subject Term: SOLID solutions; Subject Term: RESONANCE; Subject Term: MATTER -- Properties; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.2973166 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34360681&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varanasi, C. V. AU - Burke, J. AU - Wang, H. AU - Lee, J. H. AU - Barnes, P. N. T1 - Thick YBa2Cu3O7-x+BaSnO3 films with enhanced critical current density at high magnetic fields. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/09//9/1/2008 VL - 93 IS - 9 M3 - Article SP - 092501 PB - American Institute of Physics SN - 00036951 AB - The thickness dependence was studied for the critical current density (Jc) of YBa2Cu3O7-x(YBCO)+BaSnO3 (BSO) nanocomposite films. These films showed a significantly reduced decline of the Jc with thickness, especially at high magnetic fields. For example, a 2 μm thick YBCO+BSO film had a Jc∼3×105 A/cm2 at 5 T as compared to a typical Jc of 2.4×103 A/cm2 at 5 T for a 300 nm thick YBCO film. The thick YBCO+BSO films maintained high Tc (>88 K) and had a high density (2.5×1011/cm2) of continuous BSO nanocolumns that likely contributed for the observed Jc enhancements. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC fields KW - ELECTRIC currents KW - SUPERCONDUCTIVITY KW - YTTERBIUM KW - MAGNETICS KW - MAGNETISM N1 - Accession Number: 34360734; Varanasi, C. V. 1,2; Email Address: chakrapani.varanasi@wpafb.af.mil Burke, J. 1,2 Wang, H. 3 Lee, J. H. 3 Barnes, P. N. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469-0176, USA 2: Air Force Research Laboratory, WPAFB, Ohio 45433-7707, USA 3: Texas A&M University, Texas 77843, USA; Source Info: 9/1/2008, Vol. 93 Issue 9, p092501; Subject Term: MAGNETIC fields; Subject Term: ELECTRIC currents; Subject Term: SUPERCONDUCTIVITY; Subject Term: YTTERBIUM; Subject Term: MAGNETICS; Subject Term: MAGNETISM; Number of Pages: 3p; Illustrations: 2 Black and White Photographs, 2 Graphs; Document Type: Article L3 - 10.1063/1.2976683 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34360734&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Basler, Captain Matthew R. T1 - Warhorse: Cavalry in Ancient Warfare – By Philip Sidnell. JO - Historian JF - Historian Y1 - 2008///Fall2008 VL - 70 IS - 3 M3 - Book Review SP - 599 EP - 600 PB - Wiley-Blackwell SN - 00182370 AB - The article reviews the book "Warhorse: Cavalry in Ancient Warfare," by Philip Sidnell. KW - WAR horses KW - NONFICTION KW - SIDNELL, Philip KW - WARHORSE: Cavalry in Ancient Warfare (Book) N1 - Accession Number: 34136834; Basler, Captain Matthew R. 1; Affiliation: 1: United States Air Force Academy; Source Info: Fall2008, Vol. 70 Issue 3, p599; Subject Term: WAR horses; Subject Term: NONFICTION; Reviews & Products: WARHORSE: Cavalry in Ancient Warfare (Book); People: SIDNELL, Philip; Number of Pages: 2p; Document Type: Book Review L3 - 10.1111/j.1540-6563.2008.00221_61.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34136834&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, X. AU - Pan, E. AU - Albrecht, J.D. T1 - Two-dimensional Green's functions in anisotropic multiferroic bimaterials with a viscous interface JO - Journal of the Mechanics & Physics of Solids JF - Journal of the Mechanics & Physics of Solids Y1 - 2008/09// VL - 56 IS - 9 M3 - Article SP - 2863 EP - 2875 SN - 00225096 AB - Abstract: We derive, by virtue of the unified Stroh formalism, the extremely concise and elegant solutions for two-dimensional and (quasi-static) time-dependent Green''s functions in anisotropic magnetoelectroelastic multiferroic bimaterials with a viscous interface subjected to an extended line force and an extended line dislocation located in the upper half-plane. It is found for the first time that, in the multiferroic bimaterial Green''s functions, there are 25 static image singularities and 50 moving image singularities in the form of the extended line force and extended line dislocation in the upper or lower half-plane. It is further observed that, as time evolves, the moving image singularities, which originate from the locations of the static image singularities, will move further away from the viscous interface with explicit time-dependent locations. Moreover, explicit expression of the time-dependent image force on the extended line dislocation due to its interaction with the viscous interface is derived, which is also valid for mathematically degenerate materials. Several special cases are discussed in detail for the image force expression to illustrate the influence of the viscous interface on the mobility of the extended line dislocation, and various interesting features are observed. These Green''s functions can not only be directly applied to the study of dislocation mobility in the novel multiferroic bimaterials, they can also be utilized as kernel functions in a boundary integral formulation to investigate more complicated boundary value problems where multiferroic materials/composites are involved. [Copyright &y& Elsevier] AB - Copyright of Journal of the Mechanics & Physics of Solids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL physics KW - DIFFERENTIAL equations KW - BOUNDARY value problems KW - KERNEL functions KW - COMPLEX variables KW - IMAGE processing KW - COMPOSITE materials -- Bonding KW - COMPOSITE materials KW - Image force KW - Image singularity KW - Multiferroic material KW - Stroh formalism KW - Viscous interface N1 - Accession Number: 33390272; Wang, X. 1,2 Pan, E. 1,2; Email Address: pan2@uakron.edu Albrecht, J.D. 3; Affiliation: 1: Department of Civil Engineering, University of Akron, Akron, OH 44325-3905, USA 2: Department of Applied Mathematics, University of Akron, Akron, OH 44325-3905, USA 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Sep2008, Vol. 56 Issue 9, p2863; Subject Term: MATHEMATICAL physics; Subject Term: DIFFERENTIAL equations; Subject Term: BOUNDARY value problems; Subject Term: KERNEL functions; Subject Term: COMPLEX variables; Subject Term: IMAGE processing; Subject Term: COMPOSITE materials -- Bonding; Subject Term: COMPOSITE materials; Author-Supplied Keyword: Image force; Author-Supplied Keyword: Image singularity; Author-Supplied Keyword: Multiferroic material; Author-Supplied Keyword: Stroh formalism; Author-Supplied Keyword: Viscous interface; NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 812922 One-Hour Photofinishing; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.jmps.2008.04.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33390272&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kulkarni, Hemant AU - Agan, Brian K. AU - Marconi, Vincent C. AU - O'Connell, Robert J. AU - Camargo, Jose F. AU - Weijing He AU - Delmar, Judith AU - Phelps, Kenneth R. AU - Crawford, George AU - Clark, Robert A. AU - Dolan, Matthew J. AU - Ahuja, Sunil K. T1 - CCL3L1-CCR5 Genotype Improves the Assessment of AIDS Risk in HIV-1-Infected Individuals. JO - PLoS ONE JF - PLoS ONE Y1 - 2008/09// VL - 3 IS - 9 M3 - Article SP - 1 EP - 14 PB - Public Library of Science SN - 19326203 AB - Background: Whether vexing clinical decision-making dilemmas can be partly addressed by recent advances in genomics is unclear. For example, when to initiate highly active antiretroviral therapy (HAART) during HIV-1 infection remains a clinical dilemma. This decision relies heavily on assessing AIDS risk based on the CD4+ T cell count and plasma viral load. However, the trajectories of these two laboratory markers are influenced, in part, by polymorphisms in CCR5, the major HIV coreceptor, and the gene copy number of CCL3L1, a potent CCR5 ligand and HIV-suppressive chemokine. Therefore, we determined whether accounting for both genetic and laboratory markers provided an improved means of assessing AIDS risk. Methods and Findings: In a prospective, single-site, ethnically-mixed cohort of 1,132 HIV-positive subjects, we determined the AIDS risk conveyed by the laboratory and genetic markers separately and in combination. Subjects were assigned to a low, moderate or high genetic risk group (GRG) based on variations in CCL3L1 and CCR5. The predictive value of the CCL3L1- CCR5 GRGs, as estimated by likelihood ratios, was equivalent to that of the laboratory markers. GRG status also predicted AIDS development when the laboratory markers conveyed a contrary risk. Additionally, in two separate and large groups of HIV+ subjects from a natural history cohort, the results from additive risk-scoring systems and classification and regression tree (CART) analysis revealed that the laboratory and CCL3L1-CCR5 genetic markers together provided more prognostic information than either marker alone. Furthermore, GRGs independently predicted the time interval from seroconversion to CD4+ cell count thresholds used to guide HAART initiation. Conclusions: The combination of the laboratory and genetic markers captures a broader spectrum of AIDS risk than either marker alone. By tracking a unique aspect of AIDS risk distinct from that captured by the laboratory parameters, CCL3L1- CCR5 genotypes may have utility in HIV clinical management. These findings illustrate how genomic information might be applied to achieve practical benefits of personalized medicine. [ABSTRACT FROM AUTHOR] AB - Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GENOTYPE-environment interaction KW - AIDS (Disease) KW - HIGHLY active antiretroviral therapy KW - CHEMOKINES KW - GENETIC markers KW - ANTIVIRAL agents N1 - Accession Number: 55637512; Kulkarni, Hemant 1,2 Agan, Brian K. 3,4,5,6 Marconi, Vincent C. 3,4,6 O'Connell, Robert J. 3,4 Camargo, Jose F. 1,2 Weijing He 1,2 Delmar, Judith 3,4,6 Phelps, Kenneth R. 7,8 Crawford, George 1 Clark, Robert A. 1 Dolan, Matthew J. 3,4,5,6; Email Address: mdolan@idcrp.org Ahuja, Sunil K. 1,2,9; Email Address: ahujas@uthscsa.edu; Affiliation: 1: Veterans Administration Research Center for AIDS and HIV-1 Infection, South Texas Veterans Health Care System, San Antonio, Texas, United States of America 2: Department of Medicine, University of Texas Health Science Center, San Antonio, Texas, United States of America 3: Infectious Disease Clinical Research Program, Uniformed Services University, Bethesda, Maryland, United States of America 4: Infectious Disease Service, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas, United States of America 5: Henry M. Jackson Foundation, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas, United States of America 6: San Antonio Military Medical Center, Fort Sam Houston, Texas, United States of America 7: Stratton Veterans Affairs Medical Center, Albany, New York, United States of America 8: Albany Medical College, Albany, New York, United States of America 9: Department of Microbiology and Immunology and Biochemistry, University of Texas Health Science Center, San Antonio, Texas, United States of America; Source Info: 2008, Vol. 3 Issue 9, p1; Subject Term: GENOTYPE-environment interaction; Subject Term: AIDS (Disease); Subject Term: HIGHLY active antiretroviral therapy; Subject Term: CHEMOKINES; Subject Term: GENETIC markers; Subject Term: ANTIVIRAL agents; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; Number of Pages: 14p; Illustrations: 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1371/journal.pone.0003165 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=55637512&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hwang, J.Y. AU - Neira, A. AU - Scharf, T.W. AU - Tiley, J. AU - Banerjee, R. T1 - Laser-deposited carbon nanotube reinforced nickel matrix composites JO - Scripta Materialia JF - Scripta Materialia Y1 - 2008/09// VL - 59 IS - 5 M3 - Article SP - 487 EP - 490 SN - 13596462 AB - Composites based on multiwalled carbon nanotubes dispersed in nickel matrix have been processed using the laser-engineered net shape technique. The present study focuses on the survival of nanotubes in liquid nickel matrix during melt processing. The stability of nanotubes versus graphite powders in liquid nickel has been compared by processing both types of composites under identical conditions and subsequently characterizing their microstructure and chemical stability in detail using scanning and transmission electron microscopy, and micro-Raman spectroscopy. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - NICKEL KW - COMPOSITE materials KW - LASERS KW - Carbon nanotube KW - Interface KW - Laser deposition KW - Metal–matrix composite KW - Ni-based nanocomposite N1 - Accession Number: 32983705; Hwang, J.Y. 1 Neira, A. 1 Scharf, T.W. 1 Tiley, J. 2 Banerjee, R. 1; Email Address: banerjee@unt.edu; Affiliation: 1: Department of Materials Science and Engineering, The University of North Texas, Denton, TX, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH, USA; Source Info: Sep2008, Vol. 59 Issue 5, p487; Subject Term: CARBON nanotubes; Subject Term: NICKEL; Subject Term: COMPOSITE materials; Subject Term: LASERS; Author-Supplied Keyword: Carbon nanotube; Author-Supplied Keyword: Interface; Author-Supplied Keyword: Laser deposition; Author-Supplied Keyword: Metal–matrix composite; Author-Supplied Keyword: Ni-based nanocomposite; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2008.04.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32983705&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tassev, Vladimir L. AU - Bliss, David F. T1 - Stranski, Krastanov, and Kaischew, and their influence on the founding of crystal growth theory JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2008/08/31/ VL - 310 IS - 18 M3 - Article SP - 4209 EP - 4216 SN - 00220248 AB - Abstract: A reconsideration of the events and people associated with the birth of modern crystal growth theory is presented. The foundation of the new theory was enabled by validation of Gibbs and Volmer''s thermodynamic theory with the new molecular-kinetic theory. For the first time it became possible to rigorously explain crystal growth at the atomic level. The new two-dimensional growth model opened the door to understanding the mechanisms of self-assembly, crystal defect formation, and nano-structures. Molecular-kinetic theory eventually embraced a second major tenet based on the model of spiral growth at dislocations. All of these initial discoveries occurred between 1927 and 1949, a time when the world was being torn apart by war. This article recounts some thoughts and actions of three of the most illustrious founders of crystal growth theory. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMODYNAMICS KW - CRYSTAL growth KW - EPITAXY KW - CRYSTALLIZATION KW - A1. Growth modes KW - A1. Nucleation KW - A1. Phase equilibrium N1 - Accession Number: 34054364; Tassev, Vladimir L. 1; Email Address: Vladimir.tassev.ctr@hanscom.af.mil Bliss, David F. 2; Email Address: David.bliss@hanscom.af.mil; Affiliation: 1: Solid State Scientific Corporation, 27-2 Wright Road, Hollis, NH 03049, USA 2: Air Force Research Laboratory, 80 Scott Drive, Bedford, MA 01731, USA; Source Info: Aug2008, Vol. 310 Issue 18, p4209; Subject Term: THERMODYNAMICS; Subject Term: CRYSTAL growth; Subject Term: EPITAXY; Subject Term: CRYSTALLIZATION; Author-Supplied Keyword: A1. Growth modes; Author-Supplied Keyword: A1. Nucleation; Author-Supplied Keyword: A1. Phase equilibrium; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jcrysgro.2008.06.054 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34054364&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Myung Jong Kim AU - Shahana Chatterjee AU - Seung Min Kim AU - Eric A. Stach AU - Mark G. Bradley AU - Mark J. Pender AU - Larry G. Sneddon AU - Benji Maruyama T1 - Double-Walled Boron Nitride Nanotubes Grown by Floating Catalyst Chemical Vapor Deposition. JO - Nano Letters JF - Nano Letters Y1 - 2008/08/28/ VL - 8 IS - 10 M3 - Article SP - 3298 EP - 3302 SN - 15306984 AB - One-dimensional nanostructures exhibit quantum confinement which leads to unique electronic properties, making them attractive as the active elements for nanoscale electronic devices. Boron nitride nanotubes are of particular interest since, unlike carbon nanotubes, all chiralities are semiconducting. Here, we report a synthesis based on the use of low pressures of the molecular precursor borazine in conjunction with a floating nickelocene catalyst that resulted in the formation of double-walled boron nitride nanotubes. As has been shown for carbon nanotube production, the floating catalyst chemical vapor deposition method has the potential for creating high quality boron nitride nanostructures with high production volumes. [ABSTRACT FROM AUTHOR] AB - Copyright of Nano Letters is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOTUBES KW - BORON nitride KW - CHEMICAL vapor deposition KW - NANOSTRUCTURES N1 - Accession Number: 34682690; Myung Jong Kim 1 Shahana Chatterjee 1 Seung Min Kim 1 Eric A. Stach 1 Mark G. Bradley 1 Mark J. Pender 1 Larry G. Sneddon 1 Benji Maruyama 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, 2941 Hobson Way, Wright Patterson Air Force Base, Ohio 45433, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, Universal Technology Corporation, 1270 North Fairfield Road, Dayton, Ohio 45432, and School of Materials Engineering and Birck Nanotechnology Center, Purdue University, 1205 West State Street, West Lafayette, Indiana 47907; Source Info: Aug2008, Vol. 8 Issue 10, p3298; Subject Term: NANOTUBES; Subject Term: BORON nitride; Subject Term: CHEMICAL vapor deposition; Subject Term: NANOSTRUCTURES; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34682690&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eugenia Kharlampieva AU - Joseph M. Slocik AU - Taisia Tsukruk AU - Rajesh R. Naik AU - Vladimir V. Tsukruk T1 - Polyaminoacid-Induced Growth of Metal Nanoparticles on Layer-by-Layer Templates. JO - Chemistry of Materials JF - Chemistry of Materials Y1 - 2008/08/27/ VL - 20 IS - 18 M3 - Article SP - 5822 EP - 5831 SN - 08974756 AB - We report on preparation of redox-active nanoscale layer-by-layer (LbL) films with polyaminoacid-decorated surfaces that serve for both nucleation and growth of uniformly distributed gold nanoparticles at ambient conditions. We found that a poly- l-tyrosine (pTyr), a synthetic polyaminoacid, was able to direct nanoparticle formation to solid, flexible, and patterned surfaces preventing particle agglomeration. The gold particles were 8 ± 2 nm in diameter, surrounded by 3−6 nm polyaminoacid shell, and confined to the topmost polyaminoacid layer. The reported results on bioinspired gold formation can be readily expanded to any inorganic-selective surface and provide a simple, robust, and nontoxic method to obtain nonaggregated inorganic nanoparticles at ambient conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemistry of Materials is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - PARTICLES KW - AMINO acids KW - TYROSINE N1 - Accession Number: 34441228; Eugenia Kharlampieva 1 Joseph M. Slocik 1 Taisia Tsukruk 1 Rajesh R. Naik 1 Vladimir V. Tsukruk 1; Affiliation: 1: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, and Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433; Source Info: Aug2008, Vol. 20 Issue 18, p5822; Subject Term: NANOPARTICLES; Subject Term: PARTICLES; Subject Term: AMINO acids; Subject Term: TYROSINE; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34441228&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cliver, Edward W. T1 - Solar Radio Bursts and Energetic Particle Events. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/08/25/ VL - 1039 IS - 1 M3 - Article SP - 190 EP - 195 PB - American Institute of Physics SN - 0094243X AB - The two basic types of particle acceleration at the Sun—a flare-resident process (or processes) and acceleration at coronal shock waves—were first identified in solar metric radio emissions through their associated type III bursts and type II bursts, respectively. A key question for solar energetic particle (SEP) physics today concerns the relative contributions of flares and shocks to large gradual SEP events, particularly at >30 MeV energies. We address this question by: (1) comparing low-frequency (∼1 MHz) radio emissions for samples of the largest gradual and impulsive SEP events from cycle 23; and (2) determining SEP associations for a sample of large favorably-located low-frequency type III radio bursts. Our results indicate that a strong shock, as commonly manifested by a low-frequency (<14 MHz) type II burst, is a necessary condition for the occurrence of a large >30 MeV proton event. We propose a revision to the standard two-class paradigm for SEP events in which we subdivide the current gradual event class on the basis of shock geometry, i.e., quasi-parallel or quasi-perpendicular. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLE acceleration KW - SOLAR energetic particles KW - SOLAR flares KW - SHOCK waves KW - CORONAL mass ejections KW - SOLAR radio bursts KW - SEP event classification KW - solar energetic particles (SEPs) KW - solar radio bursts N1 - Accession Number: 34056304; Cliver, Edward W. 1; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, 29 Randolph Rd., Hanscom AFB, MA 01731-3010 USA; Source Info: 8/25/2008, Vol. 1039 Issue 1, p190; Subject Term: PARTICLE acceleration; Subject Term: SOLAR energetic particles; Subject Term: SOLAR flares; Subject Term: SHOCK waves; Subject Term: CORONAL mass ejections; Subject Term: SOLAR radio bursts; Author-Supplied Keyword: SEP event classification; Author-Supplied Keyword: solar energetic particles (SEPs); Author-Supplied Keyword: solar radio bursts; Number of Pages: 6p; Illustrations: 1 Diagram, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.2982444 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34056304&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Suchalkin, Sergey AU - Jung, Seungyong AU - Kipshidze, Gela AU - Shterengas, Leon AU - Hosoda, Takashi AU - Westerfeld, David AU - Snyder, Donald AU - Belenky, Gregory T1 - GaSb based light emitting diodes with strained InGaAsSb type I quantum well active regions. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/08/25/ VL - 93 IS - 8 M3 - Article SP - 081107 PB - American Institute of Physics SN - 00036951 AB - Mid-IR (λ≈3–3.5 μm) light emitting diodes with quinternary AlInGaAsSb barriers and InGaAsSb strained quantum wells grown on GaSb substrates have been demonstrated. The devices produced a quasi-cw emission power of 0.7 mW at room temperature and 2.5 mW at T=80 K. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHT emitting diodes KW - ELECTROLUMINESCENT devices KW - SEMICONDUCTORS KW - OPTICAL communications KW - LIGHT sources KW - QUANTUM wells N1 - Accession Number: 34198811; Suchalkin, Sergey 1; Email Address: suchal@ece.sunysb.edu Jung, Seungyong 2 Kipshidze, Gela 2 Shterengas, Leon 2 Hosoda, Takashi 2 Westerfeld, David 1 Snyder, Donald 3 Belenky, Gregory 2; Affiliation: 1: Power Photonic Corporation, Stony Brook, New York 11790, USA 2: State University of New York, Stony Brook, Stony Brook, New York 11794, USA 3: Air Force Research Laboratory, Eglin Air Force Base, Florida 32542, USA; Source Info: 8/25/2008, Vol. 93 Issue 8, p081107; Subject Term: LIGHT emitting diodes; Subject Term: ELECTROLUMINESCENT devices; Subject Term: SEMICONDUCTORS; Subject Term: OPTICAL communications; Subject Term: LIGHT sources; Subject Term: QUANTUM wells; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.2974795 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34198811&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gorokovsky, V.I. AU - Bowman, C. AU - Gannon, P.E. AU - VanVorous, D. AU - Voevodin, A.A. AU - Muratore, C. AU - Kang, Y.S. AU - Hu, J.J. T1 - Deposition and characterization of hybrid filtered arc/magnetron multilayer nanocomposite cermet coatings for advanced tribological applications JO - Wear JF - Wear Y1 - 2008/08/25/ VL - 265 IS - 5/6 M3 - Article SP - 741 EP - 755 SN - 00431648 AB - Abstract: The demand for low-friction, wear and corrosion resistant components, which operate under severe conditions, has directed attention to advanced surface engineering technologies. The large area filtered arc deposition (LAFAD) process has demonstrated atomically smooth coatings at high deposition rates over large surface areas. In addition to the inherent advantages of conventional filtered arc technology (superhardness, improved adhesion, low defect density), the LAFAD technology allows functionally graded, multilayer, and nanocomposite architectures of multi-elemental coatings via electro-magnetic mixing of two plasma flows composed of different metal vapor ion compositions. Further advancement is realized through a combinatorial process using a hybrid filtered arc–magnetron technique to deposit multilayer nanocomposite TiCrN+TiBC cermet coatings. Multiple TiCrN+TiBC coating architectures were reviewed for their ability to provide wear resistance for Pyrowear 675 and M50 steels used in aerospace bearing and gear applications. Coating properties were characterized by a variety of methods including SEM/EDS, HRTEM, and XRD. Wear results were obtained for high contact stress boundary lubricated sliding and advanced bearing simulation testing for wear performance under oil-off operating conditions. The best coating candidates demonstrated order of magnitude increases in resistance to sliding wear, and extended low friction operation during simulated oil-off events. Coating failure mechanisms were brittle in nature and suggestions are presented for the further optimization of TiCrN+TiBC coating architectures. [Copyright &y& Elsevier] AB - Copyright of Wear is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRIBOLOGY KW - COATING processes KW - FINISHES & finishing KW - METALS KW - Aerospace KW - Filtered arc KW - Magnetron KW - Nanocomposite KW - Oil-off event KW - Sliding wear N1 - Accession Number: 32073678; Gorokovsky, V.I. 1 Bowman, C. 1; Email Address: cbowman@arcomac.com Gannon, P.E. 1,2 VanVorous, D. 1 Voevodin, A.A. 3 Muratore, C. 3 Kang, Y.S. 3 Hu, J.J. 3; Affiliation: 1: Arcomac Surface Engineering, LLC, 151 Evergreen Drive, Ste D. Bozeman, MT 59715, United States 2: Montana State University, United States 3: Air Force Research Laboratory, United States; Source Info: Aug2008, Vol. 265 Issue 5/6, p741; Subject Term: TRIBOLOGY; Subject Term: COATING processes; Subject Term: FINISHES & finishing; Subject Term: METALS; Author-Supplied Keyword: Aerospace; Author-Supplied Keyword: Filtered arc; Author-Supplied Keyword: Magnetron; Author-Supplied Keyword: Nanocomposite; Author-Supplied Keyword: Oil-off event; Author-Supplied Keyword: Sliding wear; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 238390 Other Building Finishing Contractors; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.wear.2008.01.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32073678&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Muratore, C. AU - Clarke, D.R. AU - Jones, J.G. AU - Voevodin, A.A. T1 - Smart tribological coatings with wear sensing capability JO - Wear JF - Wear Y1 - 2008/08/25/ VL - 265 IS - 5/6 M3 - Article SP - 913 EP - 920 SN - 00431648 AB - Abstract: Tribological coatings were developed to allow automatic reporting of remaining wear life while in use. Monitoring of coating health was achieved by embedding sensor layers, known to produce distinctive luminescence spectra when exposed to laser illumination, throughout the thickness of a solid lubricant coating. For the current work, erbium- and samarium-doped yttria stabilized zirconia (YSZ) layers were used as sensor materials. One sensor layer was placed approximately midway through a molybdenum disulfide coating and another was located at the coating/substrate interface. Placement of the luminescent coatings in these positions allowed detection of wear depth and provided a warning of impending coating failure during testing. This smart coating concept is generally applicable to tribological coatings and can easily be implemented to safely increase reliance upon protective materials subject to wear and other damage mechanisms. The soft MoS2 coatings with the imbedded ceramic sensor layers also demonstrated long wear lives (≈200,000 cycles) in humid air compared to monolithic MoS2 coatings (<10,000 cycles) with the same thickness, microstructure, morphology and composition. The mechanism for the observed wear life increase was examined and is discussed together with the general use of embedded wear sensors in smart tribological coatings. [Copyright &y& Elsevier] AB - Copyright of Wear is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLID lubricants KW - MICROSTRUCTURE KW - COATING processes KW - MICROMECHANICS KW - Molybdenum disulfide KW - Sensors KW - Sliding wear KW - Smart coatings N1 - Accession Number: 32073696; Muratore, C. 1; Email Address: chris.muratore@wpafb.af.mil Clarke, D.R. 2 Jones, J.G. 3 Voevodin, A.A. 3; Affiliation: 1: UTC Inc./Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 4543, United States 2: Materials Department, College of Engineering, University of California, Santa Barbara, CA 93106-5050, United States 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, United States; Source Info: Aug2008, Vol. 265 Issue 5/6, p913; Subject Term: SOLID lubricants; Subject Term: MICROSTRUCTURE; Subject Term: COATING processes; Subject Term: MICROMECHANICS; Author-Supplied Keyword: Molybdenum disulfide; Author-Supplied Keyword: Sensors; Author-Supplied Keyword: Sliding wear; Author-Supplied Keyword: Smart coatings; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.wear.2008.02.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32073696&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bopp, Joseph C. AU - Miller, Thomas M. AU - Viggiano, Albert A. AU - Troe, Jürgen T1 - Experimental and theoretical study of the ion-ion mutual neutralization reactions Ar++SFn- (n=6, 5, and 4). JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2008/08/21/ VL - 129 IS - 7 M3 - Article SP - 074703 PB - American Institute of Physics SN - 00219606 AB - The ion-ion mutual neutralization reactions Ar++SFn-→Ar+SFn (n=6, 5, and 4) have been studied in a flowing afterglow-Langmuir probe (FALP) apparatus at 300 K and 1 Torr of He buffer gas. Electron concentrations and product ion fractions were measured, and neutralization rate constants of 4.0×10-8, 3.8×10-8, and 4×10-8 cm3 s-1 for SF6-, SF5-, and SF4-, respectively, were derived, with uncertainties of ±25% (±35% for SF4-). During the neutralization process, excited neutrals are generated that are able to dissociate to neutral fragments. In the case of SF6, the formation of SF5 and SF4, and similarly in the case of SF5, the formation of SF4 and SF3 were observed and quantified. The mechanism of primary and secondary reaction was analyzed in detail, and rate constants for the dissociative electron attachments e-+SF5→F-+SF4 (k=3×10-9 cm3 s-1,±40%) and e-+SF3→F-+SF2 (k=2×10-8 cm3 s-1,+400%,-75%) were also derived. The experimental ion-ion neutralization rate constants were found to be in good agreement with estimates from an optimum two-state double-passage Landau–Zener model. It was also found that energy partitioning in the neutralization is related to the extent of electronic excitation of Ar generated by the electron transfer processes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEUTRALIZATION (Chemistry) KW - ION recombination KW - IONS -- Spectra KW - AFTERGLOW (Physics) KW - LANGMUIR probes N1 - Accession Number: 35651562; Bopp, Joseph C. 1,2 Miller, Thomas M. 1,3 Viggiano, Albert A. 1; Email Address: afrl.rvb.pa@hanscom.af.mil Troe, Jürgen 4; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731-3010, USA 2: Sterling Chemistry Laboratory, Yale University, New Haven, Connecticut 06520-8107, USA 3: Boston College Institute for Scientific Research, Chestnut Hill, Massachusetts 02467, USA 4: Institute for Physical Chemistry, University of Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany; Source Info: 8/21/2008, Vol. 129 Issue 7, p074703; Subject Term: NEUTRALIZATION (Chemistry); Subject Term: ION recombination; Subject Term: IONS -- Spectra; Subject Term: AFTERGLOW (Physics); Subject Term: LANGMUIR probes; Number of Pages: 9p; Illustrations: 1 Diagram, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.2965130 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35651562&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Xiao, Haiming AU - Reitz, Thomas L. AU - Rottmayer, Michael A. T1 - Polarization measurements of anode-supported solid oxide fuel cells studied by incorporation of a reference electrode JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2008/08/15/ VL - 183 IS - 1 M3 - Article SP - 49 EP - 54 SN - 03787753 AB - Abstract: A three-electrode system configuration was applied to an anode-supported solid oxide fuel cell where the anode to cathode surface area ratio was ∼7.9, and Ni/YSZ was used as the anode, LSM as the cathode, Pt as the reference electrode, and thin YSZ film as the electrolyte. The cell was polarized potentiostatically at −0.2, −0.4, −0.6 and −0.8V versus open circuit voltage (OCV) and the potential change versus a reference electrode were recorded to ascertain the relative electrode polarization contributions. The results of these studies suggested that, while the anode contributions to cell polarization were less significant than that observed for the cathode, they were not negligible. Furthermore, the disparity in the relative electrode polarization contribution was observed to decrease with increasing temperature and polarization. Electrode polarization studies suggested that cathodic overvoltage decreased remarkably with increasing temperature whereas anodic overvoltage increased slightly with increasing temperature. Electrode kinetic parameters were extracted from these polarization experiments and the implications of these parameters to cell performance were discussed. Lastly, electrochemical impedance spectroscopy (EIS) data was presented to further elucidate the relative contributions of the anode and cathode impedances on button cell performance. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUEL cells KW - ELECTRODES KW - ANODES KW - CATHODES KW - Electrochemical impedance spectroscopy KW - Fuel cell KW - Polarization KW - Reference electrode KW - SOFC N1 - Accession Number: 33136658; Xiao, Haiming 1; Email Address: Haiming.Xiao@wpafb.af.mil Reitz, Thomas L. 2 Rottmayer, Michael A. 2; Affiliation: 1: Aerospace Power and Propulsion, UES Corporation, 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 2: Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA; Source Info: Aug2008, Vol. 183 Issue 1, p49; Subject Term: FUEL cells; Subject Term: ELECTRODES; Subject Term: ANODES; Subject Term: CATHODES; Author-Supplied Keyword: Electrochemical impedance spectroscopy; Author-Supplied Keyword: Fuel cell; Author-Supplied Keyword: Polarization; Author-Supplied Keyword: Reference electrode; Author-Supplied Keyword: SOFC; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jpowsour.2008.04.088 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33136658&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Relph, Rachael A. AU - Bopp, Joseph C. AU - Johnson, Mark A. AU - Viggiano, A. A. T1 - Argon cluster-mediated isolation and vibrational spectra of peroxy and nominally D3h isomers of CO3- and NO3-. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2008/08/14/ VL - 129 IS - 6 M3 - Article SP - 064305 PB - American Institute of Physics SN - 00219606 AB - Vibrational predissociation spectra are reported for two isomeric forms of the gas-phase ions, CO3- and NO3-. The peroxy forms, (OOCO- and OONO-) were isolated using an Ar-mediated synthetic scheme involving exchange of CO and NO for the more weakly bound Ar ligands in O2-·Arm clusters, while the forms based on a central heteroatom (CO3- and NO3-) were generated by electron impact on CO2 and HNO3 vapor. The simple two-band spectrum of OOCO- indicates that it is best described as the O2-·CO ion-molecule complex, whereas the covalently bound CO3- form yields a much more complicated vibrational spectrum with bands extending out to 4000 cm-1. In contrast, the NO3- ion yields a simple spectrum with only one transition as expected for the antisymmetric NO stretching fundamental of a species with D3h structure. The spectrum of the peroxynitrite isomer, OONO-, displays intermediate complexity that can be largely understood in the context of fundamentals associated with its cis and trans structures previously characterized in an Ar matrix. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VIBRATIONAL spectra KW - SPECTRUM analysis KW - MOLECULAR spectroscopy KW - INTERMEDIATES (Chemistry) KW - PEROXIDES N1 - Accession Number: 34360339; Relph, Rachael A. 1 Bopp, Joseph C. 1 Johnson, Mark A. 1; Email Address: mark.johnson@yale.edu Viggiano, A. A. 2; Affiliation: 1: Sterling Chemistry Laboratory, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts, 01731-3010, USA; Source Info: 8/14/2008, Vol. 129 Issue 6, p064305; Subject Term: VIBRATIONAL spectra; Subject Term: SPECTRUM analysis; Subject Term: MOLECULAR spectroscopy; Subject Term: INTERMEDIATES (Chemistry); Subject Term: PEROXIDES; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 6p; Illustrations: 3 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.2958223 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34360339&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Levin, George A. AU - Barnes, Paul N. AU - Murphy, John AU - Brunke, Lyle AU - Long, J. David AU - Horwath, John AU - Turgut, Zafer T1 - Persistent current in coils made out of second generation high temperature superconductor wire. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/08/11/ VL - 93 IS - 6 M3 - Article SP - 062504 PB - American Institute of Physics SN - 00036951 AB - We report the results of an experimental study of a persistent coil made out of YBa2Cu3O7-δ coated conductors. The magnitude of the persistent current and the rate of decay were investigated. Two distinct modes of relaxation are evident—one is flux creep and the other, which is much faster, is of less obvious origin. Our conclusion is that the persistent current in such a coil can be large enough and decay slowly enough so that coated conductors can be used to make persistent coils for variety of applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH temperature superconductors KW - WIRE KW - THERMALLY stimulated currents KW - MAGNETIC flux KW - ELECTRIC charge & distribution N1 - Accession Number: 34000033; Levin, George A. 1; Email Address: george.levin@wpafb.af.mil Barnes, Paul N. 1 Murphy, John 1 Brunke, Lyle 1 Long, J. David 1 Horwath, John 1 Turgut, Zafer 1; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 8/11/2008, Vol. 93 Issue 6, p062504; Subject Term: HIGH temperature superconductors; Subject Term: WIRE; Subject Term: THERMALLY stimulated currents; Subject Term: MAGNETIC flux; Subject Term: ELECTRIC charge & distribution; NAICS/Industry Codes: 423510 Metal Service Centers and Other Metal Merchant Wholesalers; Number of Pages: 3p; Illustrations: 1 Color Photograph, 2 Graphs; Document Type: Article L3 - 10.1063/1.2969798 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34000033&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - J. Z. Wu AU - Emergo, R. L. S. AU - X. Wang AU - G. Xu AU - Haugan, T. J. AU - Barnes, P. N. T1 - Strong nanopore pinning enhances Jc in YBa2Cu3O7-δ films. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/08/11/ VL - 93 IS - 6 M3 - Article SP - 062506 PB - American Institute of Physics SN - 00036951 AB - Transport critical current density (Jc) has been studied in YBa2Cu3O7-δ (YBCO) thin films doped with nanopores as pins on magnetic vortices. The density of the nanopores in the range of 5±3 pores/μm2 corresponds to an accommodation field Hm∼4.1–16.6 mT. High Jc up to 8.3 MA/cm2 has been observed on these porous YBCO films at 77 K and self-field. A close correlation between Jc and the magnetic pinning potential of the nanopores has been demonstrated below Hm, suggesting that nanopores are strong pins on the magnetic vortices. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIZE effects in thin films KW - CRITICAL currents KW - SPHEROMAKS KW - NANOSCIENCE KW - SURFACES (Technology) N1 - Accession Number: 33999993; J. Z. Wu 1; Email Address: jwu@ku.edu Emergo, R. L. S. 1 X. Wang 1 G. Xu 1 Haugan, T. J. 2 Barnes, P. N. 2; Affiliation: 1: Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, USA 2: US Air Force Research Laboratory, Dayton, Ohio 45433, USA; Source Info: 8/11/2008, Vol. 93 Issue 6, p062506; Subject Term: SIZE effects in thin films; Subject Term: CRITICAL currents; Subject Term: SPHEROMAKS; Subject Term: NANOSCIENCE; Subject Term: SURFACES (Technology); Number of Pages: 3p; Illustrations: 1 Color Photograph, 2 Graphs; Document Type: Article L3 - 10.1063/1.2970965 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33999993&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sennet, Laura AU - Fossum, Eric AU - Tan, Loon-Seng T1 - Branched poly(arylene ether ketone)s with tailored thermal properties: Effects of AB/AB2 ratio, core (B3) percentage, and reaction temperature JO - Polymer JF - Polymer Y1 - 2008/08/11/ VL - 49 IS - 17 M3 - Article SP - 3731 EP - 3736 SN - 00323861 AB - Abstract: A series of poly(ether ketone) copolymers were prepared by nucleophilic aromatic polymerization reactions of the AB monomer 4-fluoro-4′-hydroxybenzophenone, 1, and the AB2 monomer bis(4-fluorophenyl)-(4-hydroxyphenyl)phosphine oxide, 2, in the presence of 3 or 5mol% of a highly reactive core molecule, tris(3,4,5-trifluorophenyl)phosphine oxide (B3), 4. All of the copolymers prepared in the presence of a core molecule were sufficiently soluble in N-methylpyrrolidinone, NMP, to allow the determination of their molecular weights and polydispersity indices, PDIs. Number-average molecular weights, M ns, of 3200–6800Da were determined and the PDI values ranged from 1.41 to 4.07. The M n was controlled by the mol% of 4 present in the reaction mixture with higher molar percentages leading to lower M n values. Lower reaction temperatures and lower ratios of AB/AB2 monomers afforded copolymers with lower PDI values. As expected, the crystallinity of the samples decreased with an increasing AB2 content or an increase in PDI. The copolymers also exhibited excellent thermo-oxidative stability with a number of samples suffering 5% weight losses at temperatures, in air, well in excess of 450°C. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYETHERS KW - KETONES KW - COPOLYMERS KW - POLYMERIZATION KW - CHEMICAL reactions KW - MOLECULAR weights KW - Copolymerization KW - Poly(ether ketone) KW - Thermal properties N1 - Accession Number: 33631544; Sennet, Laura 1 Fossum, Eric 1; Email Address: eric.fossum@wright.edu Tan, Loon-Seng 2; Email Address: loon-seng.tan@wpafb.af.mil; Affiliation: 1: Department of Chemistry, Wright State University, 3640 Colonel Glenn Hwy, Dayton, OH 45435, United States 2: Nanostructured and Biological Materials Branch, Materials and Manufacturing Directorate, AFRL/RXBN, Air Force Research Laboratory, 2491 Hobson Way, Wright–Patterson Air Force Base, Dayton, OH 45433-7750, United States; Source Info: Aug2008, Vol. 49 Issue 17, p3731; Subject Term: POLYETHERS; Subject Term: KETONES; Subject Term: COPOLYMERS; Subject Term: POLYMERIZATION; Subject Term: CHEMICAL reactions; Subject Term: MOLECULAR weights; Author-Supplied Keyword: Copolymerization; Author-Supplied Keyword: Poly(ether ketone); Author-Supplied Keyword: Thermal properties; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.polymer.2008.06.046 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33631544&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Diamanti, Steve AU - Arifuzzaman, Shafi AU - Elsen, Andrea AU - Genzer, Jan AU - Vaia, Richard A. T1 - Reactive patterning via post-functionalization of polymer brushes utilizing disuccinimidyl carbonate activation to couple primary amines JO - Polymer JF - Polymer Y1 - 2008/08/11/ VL - 49 IS - 17 M3 - Article SP - 3770 EP - 3779 SN - 00323861 AB - Abstract: Polymer brushes provide an exceptional route to surface functionalization due to their chemical and mechanical robustness, lack of large-area defects, and high density of functional groups. In spite of these benefits, the synthetic difficulty and complex surface structure associated with polymer brushes have hindered their utilization for constructing multifunctional, patterned surfaces. In this contribution we describe the use of a rapid and highly efficient polymer brush post-functionalization technique as a facile method for controlling surface functionality of polymer brushes. Poly(2-hydroxyethyl methacrylate) (PHEMA) brushes are post-functionalized via activation with N,N′-disuccinimidyl carbonate (DSC) and subsequent coupling to molecules containing α-amine moieties. This post-functionalization effectively tailors surface energy resulting in water contact angles ranging from 40° to 100° using different conjugate molecules. Furthermore, the solvent tolerance, insensitivity to reactant concentration, and rapid reaction time of the aminolysis reaction enable surface energy patterning of the polymer brushes through the use of “reactive” soft lithography. Finally, these surface energy patterns could be “developed” by exposure to gold nanoparticle solutions to yield surfaces with patterned nanoparticle density. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - SURFACE energy KW - GOLD KW - NANOPARTICLES KW - DENSITY KW - Patterning KW - Polymer brush KW - Post-functionalization N1 - Accession Number: 33631549; Diamanti, Steve 1 Arifuzzaman, Shafi 2 Elsen, Andrea 1 Genzer, Jan 2 Vaia, Richard A. 1; Email Address: richard.vaia@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, 2941 Hobson Way, Wright–Patterson Air Force Base, OH 45433-7750, United States 2: North Carolina State University, Department of Chemical and Biomolecular Engineering, 911 Partners Way, Raleigh, NC 27695-7905, United States; Source Info: Aug2008, Vol. 49 Issue 17, p3770; Subject Term: POLYMERS; Subject Term: SURFACE energy; Subject Term: GOLD; Subject Term: NANOPARTICLES; Subject Term: DENSITY; Author-Supplied Keyword: Patterning; Author-Supplied Keyword: Polymer brush; Author-Supplied Keyword: Post-functionalization; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.polymer.2008.06.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33631549&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, Chenggang AU - Justice, Ryan S. AU - Schaefer, Dale W. AU - Baur, Jeffery W. T1 - Highly dispersed nanosilica–epoxy resins with enhanced mechanical properties JO - Polymer JF - Polymer Y1 - 2008/08/11/ VL - 49 IS - 17 M3 - Article SP - 3805 EP - 3815 SN - 00323861 AB - Abstract: Epoxy–nanocomposite resins filled with 12-nm spherical silica particles were investigated for their thermal and mechanical properties as a function of silica loading. The nanoparticles were easily dispersed with minimal aggregation for loadings up to 25wt% as determined using transmission electron microscopy (TEM) and ultra-small-angle X-ray scattering (USAXS). A proportional decrease in cure temperatures and glass transition temperature (for loadings of 10wt% and above) was observed with increased silica loading. The morphology determined by USAXS is consistent with a zone around the silica particles from which neighboring particles are excluded. The “exclusion zone” extends to 10× the particle diameter. For samples with loadings less than 10wt%, increases of 25% in tensile modulus and 30% in fracture toughness were obtained. More highly loaded samples continued to increase in modulus, but decreased in strength and fracture toughness. Overall, the addition of nanosilica is shown as a promising method for property enhancement of aerospace epoxy composite resins. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPOXY resins KW - SILICA KW - TRANSMISSION electron microscopy KW - X-ray scattering KW - GLASS transition temperature KW - Mechanical properties KW - Nanocomposites KW - Small-angle scattering N1 - Accession Number: 33631553; Chen, Chenggang 1 Justice, Ryan S. 2,3 Schaefer, Dale W. 3 Baur, Jeffery W. 2; Email Address: jeffery.baur@wpafb.af.mil; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0060, United States 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH 45433-7750, United States 3: University of Cincinnati, Department of Chemical and Materials Engineering, Cincinnati, OH 45221-0012, United States; Source Info: Aug2008, Vol. 49 Issue 17, p3805; Subject Term: EPOXY resins; Subject Term: SILICA; Subject Term: TRANSMISSION electron microscopy; Subject Term: X-ray scattering; Subject Term: GLASS transition temperature; Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Nanocomposites; Author-Supplied Keyword: Small-angle scattering; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 212322 Industrial Sand Mining; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.polymer.2008.06.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33631553&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dale J. Levandier AU - Yu-Hui Chiu AU - Rainer A. Dressler T1 - A Guided-Ion Beam Study of the O+(4S) + NH3System at Hyperthermal Energies. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2008/08/06/ VL - 112 IS - 39 M3 - Article SP - 9601 EP - 9606 SN - 10895639 AB - We have measured absolute cross section for the reaction of ground-state O +with ammonia at collision energies in the range from near-thermal to approximately 15 eV, using the guided-ion beam (GIB) method. Measurements were also performed using ammonia- d3to aid in mass assignments. The reaction is dominated at low collision energies by charge transfer; however, the cross section for this exothermic channel is rather small, decreasing sharply with energy from ∼40 Å 2for normal ammonia at near-thermal energies and leveling off at 3.7 Å 2above 6 eV; the cross section is slightly smaller for ammonia- d3. Other channels, corresponding to the production of NH 2+and NO +, and possibly OH +, were detected. The NO +channel, although nominally exothermic, is very small and exhibits a threshold at ∼7 eV. Product recoil velocity distributions were also determined at selected collision energies, using GIB time-of-flight methods. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AMMONIA KW - ALKALIES KW - NITROGEN compounds KW - CHEMICALS KW - BIOCHEMISTRY N1 - Accession Number: 34490756; Dale J. Levandier 1 Yu-Hui Chiu 1 Rainer A. Dressler 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731, and Boston College Institute for Scientific Research, 140 Commonwealth Avenue, Chestnut Hill, Massachusetts 02159; Source Info: Aug2008, Vol. 112 Issue 39, p9601; Subject Term: AMMONIA; Subject Term: ALKALIES; Subject Term: NITROGEN compounds; Subject Term: CHEMICALS; Subject Term: BIOCHEMISTRY; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325181 Alkali and chlorine manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; NAICS/Industry Codes: 325311 Nitrogenous Fertilizer Manufacturing; NAICS/Industry Codes: 325612 Polish and Other Sanitation Good Manufacturing; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34490756&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Norfleet, D.M. AU - Dimiduk, D.M. AU - Polasik, S.J. AU - Uchic, M.D. AU - Mills, M.J. T1 - Dislocation structures and their relationship to strength in deformed nickel microcrystals JO - Acta Materialia JF - Acta Materialia Y1 - 2008/08// VL - 56 IS - 13 M3 - Article SP - 2988 EP - 3001 SN - 13596454 AB - Abstract: The present work uses focused ion beam methods to prepare samples for transmission electron microscopy in order to quantitatively characterize changes in the dislocation substructures obtained from undeformed and deformed pure Ni microcrystals having sample diameters that range from 1 to 20μm. Following deformation, the dislocation density measured in the microcrystals is on average in excess of their expected initial density, with an apparent trend that the average density increases with decreasing microcrystal size. These dislocation density data are used to assess the contributions of forest hardening to the flow strength of the microcrystals. The combined effects of lattice friction, source-truncation hardening and forest hardening are found to be insufficient to fully account for the large flow strengths in smaller microcrystals. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ION bombardment KW - TRANSMISSION electron microscopy KW - ELECTRON microscopy KW - MICROCRYSTALLINE polymers KW - Dislocation density KW - Nickel KW - Plastic deformation KW - Size effects KW - TEM N1 - Accession Number: 32844801; Norfleet, D.M. 1; Email Address: dmnorfleet@esi-il.com Dimiduk, D.M. 2 Polasik, S.J. 1 Uchic, M.D. 2 Mills, M.J. 1; Affiliation: 1: Department of Materials Science and Engineering, The Ohio State University, 477 Watts Hall, 2041 College Road, Columbus, OH 43210, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLM Bldg. 655, 2230 Tenth Street, Wright Patterson, AFB, OH 45433-7817, USA; Source Info: Aug2008, Vol. 56 Issue 13, p2988; Subject Term: ION bombardment; Subject Term: TRANSMISSION electron microscopy; Subject Term: ELECTRON microscopy; Subject Term: MICROCRYSTALLINE polymers; Author-Supplied Keyword: Dislocation density; Author-Supplied Keyword: Nickel; Author-Supplied Keyword: Plastic deformation; Author-Supplied Keyword: Size effects; Author-Supplied Keyword: TEM; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.actamat.2008.02.046 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32844801&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, S.I. AU - Dimiduk, D.M. AU - Parthasarathy, T.A. AU - Uchic, M.D. AU - Tang, M. AU - Woodward, C. T1 - Athermal mechanisms of size-dependent crystal flow gleaned from three-dimensional discrete dislocation simulations JO - Acta Materialia JF - Acta Materialia Y1 - 2008/08// VL - 56 IS - 13 M3 - Article SP - 3245 EP - 3259 SN - 13596454 AB - Abstract: Recent experimental studies have revealed that micrometer-scale face-centered cubic (fcc) crystals show strong strengthening effects, even at high initial dislocation densities. We use large-scale three-dimensional discrete dislocation simulations (DDS) to explicitly model the deformation behavior of fcc Ni microcrystals in the size range of 0.5–20μm. This study shows that two size-sensitive athermal hardening processes, beyond forest hardening, are sufficient to develop the dimensional scaling of the flow stress, stochastic stress variation, flow intermittency and high initial strain-hardening rates, similar to experimental observations for various materials. One mechanism, source-truncation hardening, is especially potent in micrometer-scale volumes. A second mechanism, termed exhaustion hardening, results from a breakdown of the mean-field conditions for forest hardening in small volumes, thus biasing the statistics of ordinary dislocation processes. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THREE-dimensional display systems KW - VOLUME (Cubic content) KW - THICKNESS measurement KW - DISLOCATIONS in metals KW - Compression test KW - Dislocation dynamics KW - Nickel KW - Plastic deformation KW - Size effects N1 - Accession Number: 32844824; Rao, S.I. 1,2; Email Address: satish.rao@wpafb.af.mil Dimiduk, D.M. 3 Parthasarathy, T.A. 1,2 Uchic, M.D. 3 Tang, M. 3 Woodward, C. 4; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RxLM Wright-Patterson AFB, OH 45433-7817, USA 2: UES Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432-1894, USA 3: Lawrence Livermore National Laboratory, P.O. Box 808, L-45, Livermore, CA 94551, USA 4: Northwestern University, Department of Materials Science and Engineering, 2220 Campus Drive, Evanston, IL 60208-3108, USA; Source Info: Aug2008, Vol. 56 Issue 13, p3245; Subject Term: THREE-dimensional display systems; Subject Term: VOLUME (Cubic content); Subject Term: THICKNESS measurement; Subject Term: DISLOCATIONS in metals; Author-Supplied Keyword: Compression test; Author-Supplied Keyword: Dislocation dynamics; Author-Supplied Keyword: Nickel; Author-Supplied Keyword: Plastic deformation; Author-Supplied Keyword: Size effects; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.actamat.2008.03.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32844824&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heather Brooke AU - David L. Perkins AU - Barbara Setlow AU - Peter Setlow AU - Burt V. Bronk AU - Michael L. Myrick T1 - Sampling and Quantitative Analysis of Clean B. subtilis Spores at Sub-Monolayer Coverage by Reflectance Fourier Transform Infrared Microscopy Using Gold-Coated Filter Substrates. JO - Applied Spectroscopy JF - Applied Spectroscopy Y1 - 2008/08// VL - 62 IS - 8 M3 - Article SP - 881 EP - 888 SN - 00037028 AB - A study was conducted to determine the concentration dependency of the mid-infrared (MIR) absorbance of bacterial spores. A range of concentrations of Bacillus subtilis endospores filtered across gold-coated filter membranes were analyzed by Fourier transform infrared (FT-IR) reflectance microscopy. Calibration curves were derived from the peak absorbances associated with Amide A, Amide I, and Amide II vibrational frequencies by automatic baseline fitting to remove most of the scattering contribution. Linear relationships (R2 ≥ 0.99) were observed between the concentrations of spores and the baseline-corrected peak absorbance for each frequency studied. Detection limits for our sampled area of 100 ×100 μm2 were determined to be 79, 39, and 184 spores (or 7.92 × 105, 3.92 × 105, and 1.84 × 106 spores/cm2) for the Amide A, Amide I, and Amide II peaks, respectively. Absorbance increased linearly above the scattering baseline with particle surface concentration up to 0.9 monolayer (ML) coverage, with the monolayer density calculated to be approximately 1.17 × 108 spores/cm2. Scattering as a function of surface concentration, as estimated from extinction values at wavelengths exhibiting low absorbance, becomes nonlinear at a much lower surface concentration. The apparent scattering cross-section per spore decreased monotonically as concentrations increased toward 1.2 ML, while the absolute scattering decreased between 0.9 ML and 1.2 ML coverage. Calculations suggest that transverse spatial coherence effects are the origin of this nonlinearity, while the onset of nonlinearity in the baseline-corrected absorption is probably due to multiple scattering effects, which appear at a high surface concentration. Absorption cross-sections at peaks of the three bands were measured to be (2.15 ± 0.05) × 10−9, (1.48 ± 0.03) × 10−9, and (0.805 ± 0.023) × 10−9 cm2, respectively. These values are smaller by a factor of 2–4 than expected from the literature. The origin of the reduced cross-section is hypothesized to be an electric field effect related to the surface selection rule. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Spectroscopy is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BACILLUS subtilis KW - BACILLUS (Bacteria) KW - QUANTITATIVE chemical analysis KW - MICROSCOPY N1 - Accession Number: 33943887; Heather Brooke 1 David L. Perkins 2 Barbara Setlow 3 Peter Setlow 3 Burt V. Bronk 4 Michael L. Myrick 1; Affiliation: 1: Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208 2: Ometric Corporation, Columbia, South Carolina 29223 3: Department of Molecular, Microbial and Structural Biology, University of Connecticut Health Center, Farmington, Connecticut 06030 4: U.S. Air Force Research Laboratory/RHPC, Wright Patterson Air Force Base, Ohio 45324; U.S. Army Edgewood Chemical Biological Center, Aberdeen Proving Ground, Maryland 21010; Source Info: Aug2008, Vol. 62 Issue 8, p881; Subject Term: BACILLUS subtilis; Subject Term: BACILLUS (Bacteria); Subject Term: QUANTITATIVE chemical analysis; Subject Term: MICROSCOPY; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33943887&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhdanov, B.V. AU - Knize, R.J. T1 - Efficient diode pumped cesium vapor amplifier JO - Optics Communications JF - Optics Communications Y1 - 2008/08// VL - 281 IS - 15/16 M3 - Article SP - 4068 EP - 4070 SN - 00304018 AB - Abstract: An efficient diode laser pumped Cs vapor amplifier has been demonstrated. Using a 2cm long Cs vapor cell pumped by an 18W laser diode array, an amplification factor of 145 for low power Cs laser radiation was achieved. Such an amplifier or chain of amplifiers can significantly simplify the use of multiple pump sources for scaling the output power of alkali lasers. [Copyright &y& Elsevier] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIODES KW - CESIUM KW - LASER beams KW - LIGHT amplifiers KW - Alkali lasers KW - Optically pumped lasers N1 - Accession Number: 32646966; Zhdanov, B.V.; Email Address: boris.zhdanov.ctr@usafa.edu Knize, R.J. 1; Affiliation: 1: US Air Force Academy, Department of Physics, 2354 Fairchild Drive, Suite 2A31, USAF Academy, CO 80840, USA; Source Info: Aug2008, Vol. 281 Issue 15/16, p4068; Subject Term: DIODES; Subject Term: CESIUM; Subject Term: LASER beams; Subject Term: LIGHT amplifiers; Author-Supplied Keyword: Alkali lasers; Author-Supplied Keyword: Optically pumped lasers; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.optcom.2008.04.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32646966&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buchanan, Dennis J. AU - John, Reji T1 - Relaxation of shot-peened residual stresses under creep loading JO - Scripta Materialia JF - Scripta Materialia Y1 - 2008/08// VL - 59 IS - 3 M3 - Article SP - 286 EP - 289 SN - 13596462 AB - Creep tests on shot-peened nickel-base superalloy specimens, subject to applied stresses near and above monotonic yield, have been performed to characterize residual stress relaxation under sustained loading at 650°C in IN100. Retained residual stress–depth profiles, measured on crept samples, show that yielding during initial loading produces the largest change in the residual stress profile. Furthermore, it is shown that applied stresses below yield exhibit similar retained residual stress profiles in the axial and transverse orientations. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL alloys KW - STRESS relaxation (Mechanics) KW - STRENGTH of materials KW - RESIDUAL stresses KW - Creep KW - Nickel alloy KW - Relaxation KW - Residual stresses KW - X-ray diffraction N1 - Accession Number: 32497174; Buchanan, Dennis J. 1,2; Email Address: dennis.buchanan@wpafb.af.mil John, Reji 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory (AFRL/RXLMN), Wright-Patterson Air Force Base, OH 45433-7817, USA 2: University of Dayton Research Institute, Dayton, OH 45469-0020, USA; Source Info: Aug2008, Vol. 59 Issue 3, p286; Subject Term: NICKEL alloys; Subject Term: STRESS relaxation (Mechanics); Subject Term: STRENGTH of materials; Subject Term: RESIDUAL stresses; Author-Supplied Keyword: Creep; Author-Supplied Keyword: Nickel alloy; Author-Supplied Keyword: Relaxation; Author-Supplied Keyword: Residual stresses; Author-Supplied Keyword: X-ray diffraction; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2008.03.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32497174&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zabinski, J.S. AU - Hu, J.J. AU - Bultman, J.E. AU - Pierce, N.A. AU - Voevodin, A.A. T1 - Stoichiometry and characterization of aluminum oxynitride thin films grown by ion-beam-assisted pulsed laser deposition JO - Thin Solid Films JF - Thin Solid Films Y1 - 2008/07/31/ VL - 516 IS - 18 M3 - Article SP - 6215 EP - 6219 SN - 00406090 AB - Abstract: Oxides are inherently stable in air at elevated temperatures and may serve as wear resistant matrices for solid lubricants. Aluminum oxide is a particularly good candidate for a matrix because it has good diffusion barrier properties and modest hardness. Most thin film deposition techniques that are used to grow alumina require high temperatures to impart crystallinity. Crystalline films are about twice as hard as amorphous ones. Unfortunately, the mechanical properties of most engineering steels are degraded at temperatures above 250–350 °C. This work is focused on using energetic reactive ion bombardment during simultaneous pulsed laser deposition to enhance film crystallization at low temperatures. Alumina films were grown at several background gas pressures and temperatures, with and without Ar ion bombardment. The films were nearly stoichiometric except for depositions in vacuum. Using nitrogen ion bombardment, nitrogen was incorporated into the films and formed the Al–O–N matrix. Nitrogen concentration could be controlled through selection of gas pressure and ion energy. Crystalline Al–O–N films were grown at 330 °C with a negative bias voltage to the substrate, and showed improved hardness in comparison to amorphous films. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STOICHIOMETRY KW - THIN films KW - PULSED laser deposition KW - ALUMINUM oxide KW - Alumina KW - Aluminum oxynitride KW - Crystallization KW - Hardness KW - Ion-beam-assisted pulsed laser deposition KW - Thin film N1 - Accession Number: 32567459; Zabinski, J.S. 1 Hu, J.J. 1; Email Address: Jianjun.Hu@WPAFB.AF.MIL Bultman, J.E. 1 Pierce, N.A. 2 Voevodin, A.A. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory (AFRL), Wright-Patterson Air Force Base, Dayton, Ohio 45433, USA 2: Propulsion Directorate, Air Force Research Laboratory (AFRL), Wright-Patterson Air Force Base, Dayton, Ohio 45433, USA; Source Info: Jul2008, Vol. 516 Issue 18, p6215; Subject Term: STOICHIOMETRY; Subject Term: THIN films; Subject Term: PULSED laser deposition; Subject Term: ALUMINUM oxide; Author-Supplied Keyword: Alumina; Author-Supplied Keyword: Aluminum oxynitride; Author-Supplied Keyword: Crystallization; Author-Supplied Keyword: Hardness; Author-Supplied Keyword: Ion-beam-assisted pulsed laser deposition; Author-Supplied Keyword: Thin film; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.tsf.2007.11.120 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32567459&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Srinivasan, Raghavan AU - Miracle, Daniel AU - Tamirisakandala, Sesh T1 - Direct rolling of as-cast Ti–6Al–4V modified with trace additions of boron JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2008/07/25/ VL - 487 IS - 1/2 M3 - Article SP - 541 EP - 551 SN - 09215093 AB - Abstract: Trace boron additions to titanium alloys produce an order of magnitude reduction in as-cast grain size, leading to the possibility of significant simplification of ingot breakdown and thermomechanical processing procedures. In this study, the boron modified titanium alloy Ti–6Al–4V+0.1B (wt.%) was hot rolled from the cast+HIP condition to thickness reductions of 50% and 75% in multi-step rolling sequences. Baseline alloys (without boron) in the cast and wrought (mill product) states were also processed under identical conditions for comparison. After 50% reduction in thickness at 750–950°C (1382–1742°F), the deformation behavior of cast Ti–6Al–4V+0.1B is not noticeably different from that of standard Ti–6Al–4V mill product, whereas cast Ti–6Al–4V without boron exhibited extensive cracking. The boron-containing alloy could be deformed further to 75% reduction in thickness at 950°C (1742°F) without producing any macroscopic defects. The alpha phase shows a tendency to globularize during heat treatment after a 50% reduction in thickness to produce an equiaxed microstructure. The potential, therefore, exists for the production of slab and sheet stock with an equiaxed microstructure by directly rolling the as-cast titanium alloys modified with trace boron additions. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BORON KW - METALS -- Thermomechanical properties KW - MICROSTRUCTURE KW - MICROMECHANICS KW - Boron addition KW - Grain refinement KW - Hot rolling KW - Ingot breakdown KW - Thermomechanical processing KW - Ti–6Al–4V N1 - Accession Number: 32075229; Srinivasan, Raghavan 1; Email Address: raghavan.srinivasan@wright.edu Miracle, Daniel 2 Tamirisakandala, Sesh 3; Affiliation: 1: Mechanical and Materials Engineering Department, Wright State University, 3640 Col. Glenn Highway, Dayton, OH 45435-0002, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7817, USA 3: FMW Composite Systems, Inc., 1200 West Benedum Industrial Drive, Bridgeport, WV 26330, USA; Source Info: Jul2008, Vol. 487 Issue 1/2, p541; Subject Term: BORON; Subject Term: METALS -- Thermomechanical properties; Subject Term: MICROSTRUCTURE; Subject Term: MICROMECHANICS; Author-Supplied Keyword: Boron addition; Author-Supplied Keyword: Grain refinement; Author-Supplied Keyword: Hot rolling; Author-Supplied Keyword: Ingot breakdown; Author-Supplied Keyword: Thermomechanical processing; Author-Supplied Keyword: Ti–6Al–4V; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.msea.2007.10.053 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32075229&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hendry I. Elim AU - Sea-Ho Jeon AU - Sarika Verma AU - Loon-Seng Tan AU - Augustine Urbas AU - Wei Ji AU - Long Y. Chiang T1 - Nonlinear Optical Transmission Properties of C60Dyads Consisting of a Light-Harvesting Diphenylaminofluorene Antenna. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2008/07/23/ VL - 112 IS - 32 M3 - Article SP - 9561 EP - 9564 SN - 15206106 AB - Highly enhanced nonlinear absorption cross section values of C 60(>DPAF-C 2M), C 60(>DPAF-C 9), and C 60(>DPAF-C 10) dyads were detected up to 5400, 9700, and 14000 GM, respectively, in the 2.0 ps region in toluene at the concentration of 1.5 × 10 −3M. They were correlated to a trend showing higher efficiency in light transmittance attenuation down to 39−46% for the dyads C 60(>DPAF-C 10) and C 60(>DPAF-C 9) with the increase of irradiance intensity up only to 140 GW/cm 2. The phenomena were attributed to additional enhancement on the excited-state absorption of 1C 60*(>DPAF-C n) in the subpicosecond to picosecond region over the two-photon absorption of C 60(>DPAF-C n) in the femtosecond region. Its accumulative 2.0 ps absorption cross sections were estimated to be 8900 GM for 1C 60*(>DPAF-C 9), roughly one order of magnitude higher than its intrinsic femtosecond 2PA cross sections. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON compounds KW - NONLINEAR optics KW - ABSORPTION KW - FLUORENE KW - ABSORPTION cross sections KW - TOLUENE KW - OPTICAL properties N1 - Accession Number: 33957380; Hendry I. Elim 1 Sea-Ho Jeon 1 Sarika Verma 1 Loon-Seng Tan 1 Augustine Urbas 1 Wei Ji 1 Long Y. Chiang 1; Affiliation: 1: Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Department of Chemistry, University of MassachusettsLowell, Lowell, Massachusetts 01854, and Materials & Manufacturing Directorate, Air Force Research Laboratory, AFRL/RX, Wright−Patterson Air Force Base, Dayton, Ohio 45433; Source Info: Jul2008, Vol. 112 Issue 32, p9561; Subject Term: CARBON compounds; Subject Term: NONLINEAR optics; Subject Term: ABSORPTION; Subject Term: FLUORENE; Subject Term: ABSORPTION cross sections; Subject Term: TOLUENE; Subject Term: OPTICAL properties; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33957380&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Georgarakis, K. AU - Aljerf, M. AU - Li, Y. AU - LeMoulec, A. AU - Charlot, F. AU - Yavari, A. R. AU - Chornokhvostenko, K. AU - Tabachnikova, E. AU - Evangelakis, G. A. AU - Miracle, D. B. AU - Greer, A. L. AU - Zhang, T. T1 - Shear band melting and serrated flow in metallic glasses. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/07/21/ VL - 93 IS - 3 M3 - Article SP - 031907 PB - American Institute of Physics SN - 00036951 AB - Scanning electron microscopy observations of shear steps on Zr-based bulk metallic glasses show direct evidence of shear band melting due to heat generated by elastic energy release. The estimated range of attained temperatures and the observed morphologies are consistent with shear steps forming at a subsonic speed limited by a required redistribution of local microscopic stresses. The calculations indicate that a 0.2 μm layer melts in the vicinity of a shear band forming a 1 μm shear step. The plastic part of the stress strain curve is serrated but a majority of shear events are not associated to serrations. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC glasses KW - AMORPHOUS substances KW - SHEAR (Mechanics) KW - DEFORMATIONS (Mechanics) KW - ELASTICITY KW - STRAINS & stresses (Mechanics) KW - ELECTRON microscopy N1 - Accession Number: 33520143; Georgarakis, K. 1 Aljerf, M. 1 Li, Y. 1 LeMoulec, A. 1 Charlot, F. 1 Yavari, A. R. 1; Email Address: yavari@minatec.inpg.fr Chornokhvostenko, K. 2 Tabachnikova, E. 2 Evangelakis, G. A. 3 Miracle, D. B. 4 Greer, A. L. 5 Zhang, T. 6; Affiliation: 1: Euronano, SIMaP-CNRS, Institut National Polytechnique de Grenoble, BP 75, Saint Matrin d'Heres campus 38402, France 2: Kharkiv Polytechnical Institute, 61002 Ukraine 3: Department of Physics, University of Ioannina, Ioannina 45110, Greece 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 5: Department of Materials Science and Metallurgy, Cambridge University, CB2 3QZ United Kingdom 6: Beijing University of Aeronautics and Astronautics, Beijing 100083, People's Republic of China; Source Info: 7/21/2008, Vol. 93 Issue 3, p031907; Subject Term: METALLIC glasses; Subject Term: AMORPHOUS substances; Subject Term: SHEAR (Mechanics); Subject Term: DEFORMATIONS (Mechanics); Subject Term: ELASTICITY; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ELECTRON microscopy; Number of Pages: 3p; Illustrations: 3 Black and White Photographs, 2 Graphs; Document Type: Article L3 - 10.1063/1.2956666 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33520143&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reagan, Michael A. AU - Kashyn, Dmytro AU - Juhl, Shane AU - Vaia, Richard A. AU - Lyuksyutov, Sergei F. T1 - Electric charging and nanostructure formation in polymeric films using combined amplitude-modulated atomic force microscopy-assisted electrostatic nanolithography and electric force microscopy. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/07/21/ VL - 93 IS - 3 M3 - Article SP - 033109 PB - American Institute of Physics SN - 00036951 AB - A hybrid technique, combining lithography which exploits atomic force microscope tip manipulation with modified electric force microscopy was used to study surface electric charging (deposition and evolution) of polymethyl methacryalate and polystyrene films. Upon charging the films past a threshold voltage, two distinct regimes were observed: (1) stable feature formation related to electric breakdown and mass transport resulting in stable film deformation due to the negative surface charging (negative tip bias) and (2) no stable feature formation regime attributed to viscoelastic deformation of polymer surface followed by the surface relaxation in the case of positive surface charging (positive tip bias). [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC charge & distribution KW - ELECTROSTATICS KW - NANOSTRUCTURES KW - NANOELECTROMECHANICAL systems KW - LITHOGRAPHY KW - SCANNING probe microscopy N1 - Accession Number: 33520105; Reagan, Michael A. 1 Kashyn, Dmytro 1 Juhl, Shane 2 Vaia, Richard A. 2 Lyuksyutov, Sergei F. 1; Email Address: sfl@uakron.edu; Affiliation: 1: Department of Physics, The University of Akron, Akron Ohio 44325, USA 2: Air Force Research Laboratory, Wright-Patterson AFB 45433, Ohio 45433, USA; Source Info: 7/21/2008, Vol. 93 Issue 3, p033109; Subject Term: ELECTRIC charge & distribution; Subject Term: ELECTROSTATICS; Subject Term: NANOSTRUCTURES; Subject Term: NANOELECTROMECHANICAL systems; Subject Term: LITHOGRAPHY; Subject Term: SCANNING probe microscopy; NAICS/Industry Codes: 323119 Other printing; Number of Pages: 3p; Illustrations: 2 Color Photographs, 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1063/1.2957985 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33520105&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gonzalez, Leonel AU - Guha, Shekhar AU - Rogers, James W. AU - Sheng, Qin T1 - An effective z-stretching method for paraxial light beam propagation simulations JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2008/07/20/ VL - 227 IS - 15 M3 - Article SP - 7264 EP - 7278 SN - 00219991 AB - Abstract: A z-stretching finite difference method is developed for simulating the paraxial light beam propagation through a lens in a cylindrically symmetric domain. By introducing a domain transformation in the z-direction, we solve the corresponding complex difference equations containing an interface singularity over a computational space for great simplicity and efficiency. A specially designed matrix analysis is constructed to the study the numerical stability. Computational experiments are carried out for demonstrating our results. [Copyright &y& Elsevier] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BEAM splitters KW - FINITE differences KW - DIFFERENCE equations KW - MATRIX analytic methods KW - 65Z05 KW - Consistency KW - Domain transformation KW - Finite difference approximations KW - Interface singularity KW - Light beam propagation KW - Stability KW - Uniform and nonuniform grids N1 - Accession Number: 32738588; Gonzalez, Leonel 1 Guha, Shekhar 2 Rogers, James W. 3; Email Address: James_W_Rogers@baylor.edu Sheng, Qin 3; Affiliation: 1: General Dynamics Information Technology, 5100 Springfield Street, Dayton, OH 45431, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, 2977 Hobson Way, Wright Patterson AFB, OH 45433-7702, USA 3: Center for Astrophysics, Space Physics; Engineering Research, Department of Mathematics, Baylor University, Waco, Texas 76798-7328, USA; Source Info: Jul2008, Vol. 227 Issue 15, p7264; Subject Term: BEAM splitters; Subject Term: FINITE differences; Subject Term: DIFFERENCE equations; Subject Term: MATRIX analytic methods; Author-Supplied Keyword: 65Z05; Author-Supplied Keyword: Consistency; Author-Supplied Keyword: Domain transformation; Author-Supplied Keyword: Finite difference approximations; Author-Supplied Keyword: Interface singularity; Author-Supplied Keyword: Light beam propagation; Author-Supplied Keyword: Stability; Author-Supplied Keyword: Uniform and nonuniform grids; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.jcp.2008.04.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32738588&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiao, C.Q. AU - DeJoseph, C.A. AU - Lee, R. AU - Garscadden, A. T1 - Electron impact ionization and ion–molecule reactions of octafluoro-2-butene JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2008/07/15/ VL - 274 IS - 1-3 M3 - Article SP - 14 EP - 20 SN - 13873806 AB - Abstract: Electron impact ionization and ion–molecule reactions of octafluoro-2-butene (2-C4F8) were studied using Fourier transform mass spectrometry (FTMS). Fifteen product ions are formed by electron impact ionization over the energy range 10–200eV, with C4F7,8+, C3F3,5,6+, C2F4+ and CF1–3+ as the major ions. The total ionization cross-section reaches a maximum of 1.2×10−15 cm2 at 90eV. From threshold to 18eV, the ion population is dominated by the parent ion C4F8+, and from 18 to 70eV, by C3F5+. Above 70eV, CF3+ becomes the dominant ion. Among the major ions formed by electron impact ionization of 2-C4F8, only CF+, CF2+ and CF3+ are found to react with the parent molecule, via F− transfer or charge transfer mechanisms. The charge transfer reaction of Ar+ with 2-C4F8 produces mainly C4F7+. The ion chemistries in 2-C4F8 are significantly different from those in c-C4F8 that we have previously studied. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONS KW - ELECTRON impact ionization KW - FOURIER transform spectroscopy KW - CHARGE transfer KW - 2-C4F8 KW - Cross-section KW - Dissociative ionization KW - Ion–molecule N1 - Accession Number: 32646588; Jiao, C.Q. 1 DeJoseph, C.A. 2 Lee, R. 2 Garscadden, A. 2; Email Address: alan.garscadden@wpafb.af.mil; Affiliation: 1: Innovative Scientific Solutions, Inc., Dayton, OH 45440-3638 USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7251 USA; Source Info: Jul2008, Vol. 274 Issue 1-3, p14; Subject Term: IONS; Subject Term: ELECTRON impact ionization; Subject Term: FOURIER transform spectroscopy; Subject Term: CHARGE transfer; Author-Supplied Keyword: 2-C4F8; Author-Supplied Keyword: Cross-section; Author-Supplied Keyword: Dissociative ionization; Author-Supplied Keyword: Ion–molecule; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijms.2008.04.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32646588&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varanasi, C.V. AU - Burke, J. AU - Lu, R. AU - Wu, J. AU - Brunke, L. AU - Chuck, L. AU - Smith, H.E. AU - Maartense, I. AU - Barnes, P.N. T1 - Biaxially textured YBa2Cu3O7−x films deposited on polycrystalline flexible yttria-stabilized zirconia ceramic substrates JO - Physica C JF - Physica C Y1 - 2008/07/15/ VL - 468 IS - 14 M3 - Article SP - 1070 EP - 1077 SN - 09214534 AB - Abstract: Biaxially textured YBa2Cu3O7−x (YBCO) films were grown on polycrystalline flexible yttria-stabilized zirconia (YSZ) ceramic substrates (Ceraflex) buffered with MgO and LaMnO3 layers. These substrates were initially coated with silica glass to obtain a smooth surface and then biaxially textured MgO buffer layers were deposited by ion beam assisted deposition (IBAD-MgO). Lanthanum manganate (LMO) cap layers and YBCO layers were then deposited by the pulsed laser ablation method. Highly textured YBCO films with a full width half maximum (FWHM) of 6.75° in (110) phi scans and a FWHM∼5° in (200) omega scans were obtained. An initial deposition yielded samples with a T c >88K and a self-field magnetization J c of 2×105 A/cm2 at 77K. A secondary ion mass spectrometry (SIMS) depth profile of the samples indicated that with the present deposition condition, some La, Mn and Mg diffusion into the YBCO layers is possible and this may reduce the J c in the self-field. The yield strength (YS) of uncoated Ceraflex substrates was compared with that of metallic substrates and it was found that Ceraflex substrates can have a YS at least 4–5 times higher than the YS of biaxially textured Ni–5 at.%W substrates and ∼1.5 times that of HastelloyTM substrates. [Copyright &y& Elsevier] AB - Copyright of Physica C is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZIRCONIUM oxide KW - CERAMICS KW - ION bombardment KW - CRYOELECTRONICS KW - Cryoelectronic applications KW - Flexible YSZ ceramic KW - IBAD-MgO KW - YBCO coated conductors N1 - Accession Number: 33388380; Varanasi, C.V. 1; Email Address: chakrapani.varanasi@wpafb.af.mil Burke, J. 1 Lu, R. 2 Wu, J. 2 Brunke, L. 1 Chuck, L. 1 Smith, H.E. 1,3 Maartense, I. 1 Barnes, P.N. 3; Affiliation: 1: University of Dayton Research Institute, Metals and Ceramics, 2645 Fifth Street, Dayton, OH 45469, USA 2: Department of Physics and Astronomy, University of Kansas, Lawrence, KS 66045, USA 3: Air Force Research Laboratory (AFRL), Wright-Patterson AFB, OH 45433, USA; Source Info: Jul2008, Vol. 468 Issue 14, p1070; Subject Term: ZIRCONIUM oxide; Subject Term: CERAMICS; Subject Term: ION bombardment; Subject Term: CRYOELECTRONICS; Author-Supplied Keyword: Cryoelectronic applications; Author-Supplied Keyword: Flexible YSZ ceramic; Author-Supplied Keyword: IBAD-MgO; Author-Supplied Keyword: YBCO coated conductors; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.physc.2008.05.258 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33388380&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Khurgin, J. B. AU - Sun, G. AU - Soref, R. A. T1 - Electroluminescence efficiency enhancement using metal nanoparticles. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/07/14/ VL - 93 IS - 2 M3 - Article SP - 021120 PB - American Institute of Physics SN - 00036951 AB - We apply the “effective mode volume” theory to evaluate enhancement of the electroluminescence efficiency of semiconductor emitters placed in the vicinity of isolated metal nanoparticles and their arrays. Using the example of an InGaN/GaN quantum-well active region positioned in close proximity to Ag nanospheres, we show that while the enhancement due to isolated metal nanoparticles is large, only modest enhancement can be obtained with ordered array of those particles. We further conclude that random assembly of isolated particles holds an advantage over the ordered arrays for light emitting devices of finite area. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROLUMINESCENT devices KW - SEMICONDUCTORS -- Research KW - NANOPARTICLES KW - QUANTUM wells KW - LIGHT sources -- Design & construction N1 - Accession Number: 33361142; Khurgin, J. B. 1 Sun, G. 2 Soref, R. A. 3; Affiliation: 1: Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA 2: Department of Physics, University of Massachusetts Boston, Boston, Massachusetts 02125, USA 3: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731, USA; Source Info: 7/14/2008, Vol. 93 Issue 2, p021120; Subject Term: ELECTROLUMINESCENT devices; Subject Term: SEMICONDUCTORS -- Research; Subject Term: NANOPARTICLES; Subject Term: QUANTUM wells; Subject Term: LIGHT sources -- Design & construction; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.2957989 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33361142&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bayraktaroglu, Burhan AU - Leedy, Kevin AU - Bedford, Robert T1 - High temperature stability of postgrowth annealed transparent and conductive ZnO:Al films. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/07/14/ VL - 93 IS - 2 M3 - Article SP - 022104 PB - American Institute of Physics SN - 00036951 AB - High temperature stability of Al-doped ZnO transparent thin films in air has been improved by a combination of optimized growth parameters and postgrowth treatment. Optical transparency was better than 90% for wavelengths ranging from 380 to at least 2500 nm with films that also had resistivities of 2×10-4 Ω cm. Depending on the growth conditions, film resistivities showed different degrees of increase in resistivity after storing in air at elevated temperatures. Films grown at lower pressures were stable up to 400 °C for short exposure times (2 h) and exhibited virtually no change in resistivity at 260 °C for over 2500 h. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films -- Research KW - TRANSPARENT semiconductors KW - HIGH temperatures KW - ZINC oxide thin films KW - ELECTRICAL resistivity N1 - Accession Number: 33361193; Bayraktaroglu, Burhan 1 Leedy, Kevin 1 Bedford, Robert 1; Affiliation: 1: Air Force Research Laboratory, AFRL/RYD, Wright Patterson AFB, Ohio 45433, USA; Source Info: 7/14/2008, Vol. 93 Issue 2, p022104; Subject Term: THIN films -- Research; Subject Term: TRANSPARENT semiconductors; Subject Term: HIGH temperatures; Subject Term: ZINC oxide thin films; Subject Term: ELECTRICAL resistivity; Number of Pages: 3p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.2959071 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33361193&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schneider, Stefan AU - Hawkins, Tommy AU - Rosander, Michael AU - Mills, Jeffrey AU - Vaghjiani, Ghanshyam AU - Chambreau, Steven T1 - Liquid Azide Salts and Their Reactions with Common Oxidizers IRFNA and N2O4. JO - Inorganic Chemistry JF - Inorganic Chemistry Y1 - 2008/07/07/ VL - 47 IS - 13 M3 - Article SP - 6082 EP - 6089 SN - 00201669 AB - Several imidazolium-based ionic liquid azides with saturated and unsaturated side chains were prepared, and their physical and structural properties were investigated. The reactivity of these new as well as some previously reported ionic liquid azides with strong oxidizers, N2O4 and inhibited, red-fuming-nitric acid (IRFNA), was studied. [ABSTRACT FROM AUTHOR] AB - Copyright of Inorganic Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AZIDES KW - CHEMICAL reactions KW - OXIDIZING agents KW - IMIDAZOLINES KW - NITRIC acid KW - IONIC liquids N1 - Accession Number: 33262432; Schneider, Stefan 1; Email Address: stefan.schneider@edwards.af.mil Hawkins, Tommy 1 Rosander, Michael 1 Mills, Jeffrey 1 Vaghjiani, Ghanshyam 1 Chambreau, Steven 1; Affiliation: 1: Space and Missile Propulsion Division, 10 East Saturn Boulevard, Air Force Research Laboratory, Edwards Air Force Base, California 93524; Source Info: 7/7/2008, Vol. 47 Issue 13, p6082; Subject Term: AZIDES; Subject Term: CHEMICAL reactions; Subject Term: OXIDIZING agents; Subject Term: IMIDAZOLINES; Subject Term: NITRIC acid; Subject Term: IONIC liquids; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; NAICS/Industry Codes: 325311 Nitrogenous Fertilizer Manufacturing; Number of Pages: 8p; Illustrations: 3 Diagrams, 3 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33262432&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buryachenko, Valeriy AU - Kushch, V. AU - Dudka, V. AU - Roy, A. T1 - Effective stiffness of composites reinforced by cylindrical fibers with smooth ends, with potential application to nanocomposites. JO - Acta Mechanica JF - Acta Mechanica Y1 - 2008/07// VL - 198 IS - 3/4 M3 - Article SP - 129 EP - 146 PB - Springer Science & Business Media B.V. SN - 00015970 AB - Nanocomposite is modeled as a linearly elastic composite medium, which consists of a homogeneous matrix containing a statistically homogeneous random field of homogeneous cylindrical fibers with smooth ends and prescribed random orientation. Estimation of effective elastic moduli of nanocomposites was performed by the effective field method (see for references Buryachenko in Appl Mech Rev 54:1–47, 2001) developed in the framework of quasi crystalline approximation when the spatial correlations of inclusion location take particular ellipsoidal forms. A single cylindrical fiber with the smooth ends embedded in a large matrix sample is analyzed by finite element analysis for six different external loadings which yields a strain polarization tensor averaged over the volume of the fiber. The independent choice of shapes of inclusions and correlation holes provides the formulae of effective moduli which are symmetric, completely explicit and easy to use. The parametric numerical analysis reveals the most sensitive parameters influencing the effective moduli which are defined by the axial elastic moduli of nanofibers rather than their transversal moduli as well as by the choice of correlation holes, concentration and prescribed random orientation of nanofibers. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Mechanica is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOFIBERS KW - FINITE element method KW - FIBERS KW - STRAINS & stresses (Mechanics) KW - LOADING & unloading N1 - Accession Number: 35417574; Buryachenko, Valeriy 1; Email Address: buryach@woh.rr.com Kushch, V. 2 Dudka, V. 2 Roy, A. 3; Affiliation: 1: University of Dayton Research Institute , Dayton 45469 USA 2: Institute for Superhard Materials of the National Academy of Sciences , Kiev Ukraine 3: Air Force Research Laboratory , AFRL/MLBC, WPAFB , Dayton USA; Source Info: Jul2008, Vol. 198 Issue 3/4, p129; Subject Term: NANOFIBERS; Subject Term: FINITE element method; Subject Term: FIBERS; Subject Term: STRAINS & stresses (Mechanics); Subject Term: LOADING & unloading; Number of Pages: 18p; Illustrations: 13 Graphs; Document Type: Article L3 - 10.1007/s00707-007-0531-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35417574&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Kundu, Santanu AU - Naskar, Amit K. AU - Ogale, Amod A. AU - Anderson, David P. AU - Arnold, Jonahira R. T1 - Observations on a low-angle X-ray diffraction peak for AR-HP mesophase pitch JO - Carbon JF - Carbon Y1 - 2008/07// VL - 46 IS - 8 M3 - Letter SP - 1166 EP - 1169 SN - 00086223 AB - Abstract: Using wide angle x-ray diffraction on AR-HP mesophase pitch, a diffraction peak was detected at approximately 7° (2Θ). The low-angle peak was reproducible using different diffractometers and different sample-to-detector distances, and was observed for all pitch samples irrespective of the flow history, but not for carbon fibers derived from the same precursor fibers. The interplanar 002 peak at ∼25° was observed at the equatorial position, whereas, the peak at 7° was in the meridional position, i.e., the peaks are nominally 90° apart in an azimuthal scan. This signifies that the low angle peak was due to diffraction from planes that are orthogonal to (002) planes. The 7° peak is equivalent to a d-spacing of 1.25nm, which corresponds to the nominal lateral dimension of the mesogen molecules that constitute the mesophase pitch. A typical MALDI analysis showed predominance of molecular weights of ∼500 au. Edges of such a constituent of mesophase pitch molecules, which lead to a lateral ordered spacing of approximately 1.1nm, can lead to a diffraction peak at approximately 7°. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - X-ray diffraction KW - CARBON fibers KW - MOLECULES KW - MOLECULAR weights KW - OPTICAL diffraction N1 - Accession Number: 32557424; Kundu, Santanu 1 Naskar, Amit K. 1 Ogale, Amod A. 1; Email Address: ogale@clemson.edu Anderson, David P. 2 Arnold, Jonahira R. 3; Affiliation: 1: Department of Chemical and Biomolecular Engineering and CAEFF, Clemson University, Clemson, SC 29634, United States 2: University of Dayton Research Institute, Dayton, OH 45469-0168, United States 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, Dayton, OH 45433-7750, United States; Source Info: Jul2008, Vol. 46 Issue 8, p1166; Subject Term: X-ray diffraction; Subject Term: CARBON fibers; Subject Term: MOLECULES; Subject Term: MOLECULAR weights; Subject Term: OPTICAL diffraction; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 4p; Document Type: Letter L3 - 10.1016/j.carbon.2008.03.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32557424&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Birman, Victor AU - Byrd, Larry W. T1 - Stability and natural frequencies of functionally graded stringer-reinforced panels JO - Composites: Part B, Engineering JF - Composites: Part B, Engineering Y1 - 2008/07// VL - 39 IS - 5 M3 - Article SP - 816 EP - 825 SN - 13598368 AB - Abstract: The paper presents an analysis of stability and free vibrations of rectangular functionally graded panels reinforced by a system of parallel stringers. The exact solution of the problem is illustrated for large aspect ratio panels with simply supported long edges and arbitrary boundary conditions along the short edges (hereafter the reference to an “exact solution” implies a closed-form solution in the content of the theory of plates). The spacing between the stringers and the cross sections of individual stringers can be arbitrary. In the particular case where identical stringers are equally spaced, the solution is simplified using the smeared stiffeners technique. The optimization problem concerned with the choice of stringers and their spacing in the situations where the buckling loads or fundamental frequencies are prescribed is also considered. The closed-form solution of the optimization problem is shown in the case of blade stringers. [Copyright &y& Elsevier] AB - Copyright of Composites: Part B, Engineering is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BUCKLING (Mechanics) KW - COMPOSITE materials KW - MATERIALS KW - CARBON composites KW - A. Particle-reinforcement KW - B. Buckling KW - B. Vibration KW - C. Analytical modelling KW - Functionally graded material KW - Optimization N1 - Accession Number: 32054582; Birman, Victor 1; Email Address: vbirman@mst.edu Byrd, Larry W. 2; Affiliation: 1: Missouri University of Science and Technology, Engineering Education Center, One University Boulevard, St. Louis, MI 63121, United States 2: Air Force Research Laboratory, AFRL/VASM, Building 65, Wright-Patterson Air Force Base, OH 45433, United States; Source Info: Jul2008, Vol. 39 Issue 5, p816; Subject Term: BUCKLING (Mechanics); Subject Term: COMPOSITE materials; Subject Term: MATERIALS; Subject Term: CARBON composites; Author-Supplied Keyword: A. Particle-reinforcement; Author-Supplied Keyword: B. Buckling; Author-Supplied Keyword: B. Vibration; Author-Supplied Keyword: C. Analytical modelling; Author-Supplied Keyword: Functionally graded material; Author-Supplied Keyword: Optimization; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.compositesb.2007.10.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32054582&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Steeves, Rouven J. T1 - Deadly Nothingness: A Meditation on Evil. JO - Humanitas (10667210) JF - Humanitas (10667210) Y1 - 2008/07// VL - 21 IS - 1/2 M3 - Article SP - 87 EP - 110 PB - National Humanities Institute SN - 10667210 AB - The article discusses the Augustinian and Manichean concepts of evil and reflects on Alexandxer de Tocqueville's "peculiar" modern incarnation of evil. Saint Augustine of Hippo described evil as "merely a name for the privation of good." Manicheanism, on the other hand, viewed evil as coequal with a good God and no less powerful. The article also examines the concept of evil as expressed in J. R. R. Tolkien's "Lord of the Rings" trilogy. KW - CONCEPTS KW - GOOD & evil KW - RELIGIOUS thought KW - GOOD & evil in literature KW - AUGUSTINE, Saint, Bishop of Hippo, 354-430 KW - LORD of the Rings book series N1 - Accession Number: 44525492; Steeves, Rouven J. 1; Affiliation: 1: United States Air Force Academy; Source Info: 2008, Vol. 21 Issue 1/2, p87; Subject Term: CONCEPTS; Subject Term: GOOD & evil; Subject Term: RELIGIOUS thought; Subject Term: GOOD & evil in literature; Reviews & Products: LORD of the Rings book series; People: AUGUSTINE, Saint, Bishop of Hippo, 354-430; Number of Pages: 24p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=44525492&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Muella, M.T.A.H. AU - de Paula, E.R. AU - Kantor, I.J. AU - Batista, I.S. AU - Sobral, J.H.A. AU - Abdu, M.A. AU - Kintner, P.M. AU - Groves, K.M. AU - Smorigo, P.F. T1 - GPS L-band scintillations and ionospheric irregularity zonal drifts inferred at equatorial and low-latitude regions JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2008/07// VL - 70 IS - 10 M3 - Article SP - 1261 EP - 1272 SN - 13646826 AB - Abstract: The main scientific objective of this research is to study the spatial variability and dynamics of the F-region irregularities. To achieve this, amplitude scintillations at the L-band, total electron content (TEC) and irregularity drifts were measured, as part of the Conjugate Point Equatorial Experiment (COPEX) campaign, by a network of ground-based global positioning system (GPS) receivers. The observations reveal a strong variability in the evolution of the irregularities from the equator to low-latitudes, and their zonal velocities at conjugate sites present a decrease with local time, and also with latitude. Moreover, the scintillations appear to be correlated with strong TEC gradients in the equatorward edge of the enhanced equatorial anomaly peaks. Other relevant aspects of the observations are highlighted and discussed. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GLOBAL Positioning System KW - ELECTRONS KW - ARTIFICIAL satellites in navigation KW - ARTIFICIAL satellites KW - Equatorial ionosphere KW - Instruments and techniques KW - Ionospheric irregularities KW - Ionospheric physics N1 - Accession Number: 32736718; Muella, M.T.A.H. 1; Email Address: mmuella@dae.inpe.br de Paula, E.R. 1 Kantor, I.J. 1 Batista, I.S. 1 Sobral, J.H.A. 1 Abdu, M.A. 1 Kintner, P.M. 2 Groves, K.M. 3 Smorigo, P.F. 1; Affiliation: 1: Divisão de Aeronomia, Instituto Nacional de Pesquisas Espaciais, Av. dos Astronautas, 1758, Jd. da Granja, 12227-010 São José dos Campos, SP, Brazil 2: School of Electrical and Computer Engineering, Cornell University, Ithaca, 14853 NY, USA 3: Space Vehicles Directorate, Air Force Research Laboratory, Hanscon AFB, USA; Source Info: Jul2008, Vol. 70 Issue 10, p1261; Subject Term: GLOBAL Positioning System; Subject Term: ELECTRONS; Subject Term: ARTIFICIAL satellites in navigation; Subject Term: ARTIFICIAL satellites; Author-Supplied Keyword: Equatorial ionosphere; Author-Supplied Keyword: Instruments and techniques; Author-Supplied Keyword: Ionospheric irregularities; Author-Supplied Keyword: Ionospheric physics; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.jastp.2008.03.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32736718&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Luckarift, Heather R. T1 - Silica-Immobilized Enzyme Reactors. JO - Journal of Liquid Chromatography & Related Technologies JF - Journal of Liquid Chromatography & Related Technologies Y1 - 2008/07// VL - 31 IS - 11/12 M3 - Article SP - 1568 EP - 1592 PB - Taylor & Francis Ltd SN - 10826076 AB - Recent studies have demonstrated the applicability and versatility of immobilized enzyme reactors (IMERs) for chemical and biochemical synthesis and analysis. The majority of IMER systems rely on enzymes immobilized to packed matrices within flow-through devices. This review focuses primarily on the use of silica as a support for enzyme immobilization and specific applications of the resulting silica-based IMERs. A number of recently published examples (2000 onwards) are discussed as model systems. The effect of various silica matrices and immobilization techniques upon the enzymatic properties and stability of the biocatalysts is considered. In addition, reports in which the carrier matrix is biologically-derived silica are highlighted as an alternative and versatile technique that provides advantageous recovery, reuse and reproducibility. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Liquid Chromatography & Related Technologies is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMMOBILIZED enzymes KW - BIOCHEMISTRY KW - IMMOBILIZED proteins KW - CHEMICAL reactions KW - SILICON compounds KW - SCIENTIFIC method KW - Biocatalysis KW - Biosilica KW - Drug discovery KW - Enzyme reactors KW - IMER KW - Immobilized enzymes N1 - Accession Number: 34478146; Luckarift, Heather R. 1; Email Address: heather.luckarift.ctr@tyndall.af.mil; Affiliation: 1: Microbiology and Applied Biochemistry, Air Force Research Laboratory, Tyndall Air Force Base, Florida, USA; Source Info: 2008, Vol. 31 Issue 11/12, p1568; Subject Term: IMMOBILIZED enzymes; Subject Term: BIOCHEMISTRY; Subject Term: IMMOBILIZED proteins; Subject Term: CHEMICAL reactions; Subject Term: SILICON compounds; Subject Term: SCIENTIFIC method; Author-Supplied Keyword: Biocatalysis; Author-Supplied Keyword: Biosilica; Author-Supplied Keyword: Drug discovery; Author-Supplied Keyword: Enzyme reactors; Author-Supplied Keyword: IMER; Author-Supplied Keyword: Immobilized enzymes; Number of Pages: 25p; Illustrations: 1 Black and White Photograph, 2 Diagrams, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1080/10826070802125959 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34478146&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Josyula, Eswar AU - Arslanbekov, Robert R. AU - Kolobov, Vladimir I. AU - Gimelshein, Sergey F. T1 - Evaluation of Kinetic/Continuum Solver for Hypersonic Nozzle-Plume Flow. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2008/07//Jul/Aug2008 VL - 45 IS - 4 M3 - Article SP - 665 EP - 676 SN - 00224650 AB - The objective of this study is to evaluate the predictive capability and numerical efficiency of a newly developed combined kinetic!continuum approach incorporated in the unified flow solver in application to complex expanding nozzle-plume flows. The results of numerical simulations of a steady-state nitrogen flow expanding from a hypersonic nozzle into a low-density stagnant gas are presented. The Euler equations are solved in high-density continuum regions, whereas the direct solution of the Boltzmann equation is conducted in the low-density noncontinuum regions. The appropriate set of equations, kinetic or continuum, are solved using a dynamically adaptive mesh and an automatic domain decomposition feature. The nozzle rotational and vibrational temperature predictions are compared with existing temperature data obtained in the NASA Electric Arc Shock Tube facility. A direct simulation Monte Carlo solver, SMILE, was run for the plume domain to provide a reference numerical solution. Detailed comparison of united flow solver predictions of plume macroparameters with those of SMILE is satisfactory in the majority of the flowfield; in other parts, however, the differences are significant and clearly demonstrate the need for proper treatment of the numerical parameters in the two methodologies. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NOZZLES KW - PLUMES (Fluid dynamics) KW - NUMERICAL analysis KW - HYPERSONIC planes KW - HYPERSONIC aerodynamics KW - EULER'S numbers N1 - Accession Number: 34078685; Josyula, Eswar 1 Arslanbekov, Robert R. 2 Kolobov, Vladimir I. 2 Gimelshein, Sergey F. 3; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: CFD Research Corporation, Huntsville, Alabama 35805 3: University of Southern California, Los Angeles, California 90089; Source Info: Jul/Aug2008, Vol. 45 Issue 4, p665; Subject Term: NOZZLES; Subject Term: PLUMES (Fluid dynamics); Subject Term: NUMERICAL analysis; Subject Term: HYPERSONIC planes; Subject Term: HYPERSONIC aerodynamics; Subject Term: EULER'S numbers; NAICS/Industry Codes: 326198 All other plastic product manufacturing; NAICS/Industry Codes: 326199 All Other Plastics Product Manufacturing; Number of Pages: 12p; Illustrations: 3 Charts, 24 Graphs; Document Type: Article L3 - 10.2514/1.35431 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34078685&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fair, Geoff E. AU - Hay, Randall S. AU - Boakye, Emmanuel E. T1 - Precipitation Coating of Rare-Earth Orthophosphates on Woven Ceramic Fibers—Effect of Rare-Earth Cation on Coating Morphology and Coated Fiber Strength. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2008/07// VL - 91 IS - 7 M3 - Article SP - 2117 EP - 2123 PB - Wiley-Blackwell SN - 00027820 AB - Monazite (La, Ce, Nd, and GdPO4) and xenotime (Tb, Dy, and YPO4) coatings were deposited on woven Nextel™ 610 and 720 fibers by heterogeneous precipitation from a rare-earth citrate/phosphoric acid precursor. Coating phases and microstructure were characterized by SEM and TEM, and coated fiber strength was measured after heat treatment at 1200°C for 2 h. Coated fiber strength increased with decreasing ionic radius of the rare-earth cation in the monazite and xenotime coatings, and correlates with the high-temperature weight loss and the densification rate of the coatings. Dense coatings with trapped porosity and high weight loss at a high temperature degrade fiber strength the most. The degradation is consistent with stress corrosion driven by thermal residual stress from coating precursor decomposition products trapped in the coating at a high temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CERAMICS KW - MONAZITE KW - RARE earth metals KW - XENOTIME KW - STRESS corrosion KW - SILICON compounds KW - OXIDES KW - MICROSTRUCTURE KW - STRENGTH of materials N1 - Accession Number: 34545985; Fair, Geoff E. 1; Email Address: geoff.fair@wpafb.af.mil Hay, Randall S. 1 Boakye, Emmanuel E. 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 2: UES, Inc., Dayton, Ohio; Source Info: Jul2008, Vol. 91 Issue 7, p2117; Subject Term: CERAMICS; Subject Term: MONAZITE; Subject Term: RARE earth metals; Subject Term: XENOTIME; Subject Term: STRESS corrosion; Subject Term: SILICON compounds; Subject Term: OXIDES; Subject Term: MICROSTRUCTURE; Subject Term: STRENGTH of materials; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 7p; Illustrations: 2 Color Photographs, 2 Black and White Photographs, 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2008.02431.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34545985&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cinibulk, Michael K. AU - Fair, Geoff E. AU - Kerans, Ronald J. T1 - High-Temperature Stability of Lanthanum Orthophosphate (Monazite) on Silicon Carbide at Low Oxygen Partial Pressures. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2008/07// VL - 91 IS - 7 M3 - Article SP - 2290 EP - 2297 PB - Wiley-Blackwell SN - 00027820 AB - The stability of lanthanum orthophosphate (LaPO4) on SiC was investigated using a LaPO4-coated SiC fiber at 1200°–1400°C at low oxygen partial pressures. A critical oxygen partial pressure exists below which LaPO4 is reduced in the presence of SiC and reacts to form La2O3 or La2Si2O7 and SiO2 as the solid reaction products. The critical oxygen partial pressure increases from ∼0.5 Pa at 1200°C to ∼50 Pa at 1400°C. Above the critical oxygen partial pressure, a thin SiO2 film, which acts as a reaction barrier, exists between the SiC fiber and the LaPO4 coating. Continuous LaPO4 coatings and high strengths were obtained for coated fibers that were heated at or below 1300°C and just above the critical oxygen partial pressure for each temperature. At temperatures above 1300°C, the thin LaPO4 coating becomes morphologically unstable due to free-energy minimization as the grain size reaches the coating thickness, which allows the SiO2 oxidation product to penetrate the coating. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CERAMICS KW - LANTHANUM KW - SILICON carbide KW - OXYGEN KW - THIN films KW - OXIDATION KW - ELECTRON microscopy KW - CRYSTALS KW - SPECTRUM analysis N1 - Accession Number: 34546002; Cinibulk, Michael K. 1; Email Address: michael.cinibulk@wpafb.af.mil Fair, Geoff E. 1 Kerans, Ronald J. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory Wright-Patterson Air Force Base, Ohio 45433-7817; Source Info: Jul2008, Vol. 91 Issue 7, p2290; Subject Term: CERAMICS; Subject Term: LANTHANUM; Subject Term: SILICON carbide; Subject Term: OXYGEN; Subject Term: THIN films; Subject Term: OXIDATION; Subject Term: ELECTRON microscopy; Subject Term: CRYSTALS; Subject Term: SPECTRUM analysis; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 8p; Illustrations: 3 Black and White Photographs, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2008.02409.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34546002&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Koerner, Hilmar AU - White, Timothy J. AU - Tabiryan, Nelson V. AU - Bunning, Timothy J. AU - Vaia, Richard A. T1 - Photogenerating work from polymers JO - Materials Today JF - Materials Today Y1 - 2008/07// VL - 11 IS - 7/8 M3 - Article SP - 34 EP - 42 SN - 13697021 AB - The ability to control the creation of mechanical work remotely, with high speed and spatial precision, over long distances, offers many intriguing possibilities. Recent developments in photoresponsive polymers and nanocomposite concepts are at the heart of these future devices. Whether driving direct conformational changes, initiating reversible chemical reactions to release stored strain, or converting a photon to a local temperature increase, combinations of photoactive units, nanoparticles, ordered mesophases, and polymeric networks are providing an expansive array of photoresponsive polymer options for mechanical devices. Framing the typically geometry-specific observations into an applied engineering vocabulary will ultimately define the role of these materials in future actuator applications, ranging from microfluidic valves in medical devices to optically controlled mirrors in displays. [Copyright &y& Elsevier] AB - Copyright of Materials Today is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - MACROMOLECULES KW - PHOTONS KW - NANOPARTICLES KW - NANOSTRUCTURED materials N1 - Accession Number: 32736783; Koerner, Hilmar 1,2 White, Timothy J. 1,3 Tabiryan, Nelson V. 4 Bunning, Timothy J. 1 Vaia, Richard A. 1; Email Address: Richard.Vaia@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: Universal Technology Corporation, Dayton, OH 45432, USA 3: General Dynamics Information Technology, Dayton, OH 45431, USA 4: BEAM Engineering for Advanced Measurements Company, Winter Park, FL 32789, USA; Source Info: Jul2008, Vol. 11 Issue 7/8, p34; Subject Term: POLYMERS; Subject Term: MACROMOLECULES; Subject Term: PHOTONS; Subject Term: NANOPARTICLES; Subject Term: NANOSTRUCTURED materials; Number of Pages: 9p; Document Type: Article L3 - 10.1016/S1369-7021(08)70147-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32736783&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Covert, Lance AU - Jenshan Lin AU - Janning, Dan AU - Dalrymple, Thomas T1 - 5.8 GHz orientation-specific extruded-fin heatsink antennas for 3D RF system integration. JO - Microwave & Optical Technology Letters JF - Microwave & Optical Technology Letters Y1 - 2008/07// VL - 50 IS - 7 M3 - Article SP - 1826 EP - 1831 SN - 08952477 AB - In high-power RF transmitter applications, the heatsink can be used as an antenna for improved antenna performance and increased integration. Extruded-fin heatsink antennas designed at 5.8 GHz are orientation-specific when the heatsink base replaces the patch of a patch antenna. In this case, the orientation of the fins with respect to the patch edges plays a significant role in the antenna performance and must be considered. The results show that the heatsink antenna using a lossy, low-cost FR4 substrate increases the bandwidth from 3.1 to 17.6% and radiation efficiency from 62 to 87% compared with the patch antenna on the same substrate. Also, the orientation has a significant effect on the directivity, gain, and radiation pattern. By combining two functions into one structure, the component count in a system is reduced and the antenna performance can be improved. © Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1826–1831, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23478 [ABSTRACT FROM AUTHOR] AB - Copyright of Microwave & Optical Technology Letters is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT sinks (Electronics) KW - HEAT transfer KW - ELECTRONIC apparatus & appliances -- Cooling KW - SEMICONDUCTORS -- Cooling KW - ANTENNAS (Electronics) KW - antenna efficiency KW - antenna gain KW - heatsink KW - high-density packaging KW - patch antenna KW - power amplifier N1 - Accession Number: 31826248; Covert, Lance 1; Email Address: lcovert@ufl.edu Jenshan Lin 1 Janning, Dan 2 Dalrymple, Thomas 2; Affiliation: 1: Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL 2: Air Force Research Laboratory (AFRL/SNDR), Wright-Patterson AFB, OH; Source Info: Jul2008, Vol. 50 Issue 7, p1826; Subject Term: HEAT sinks (Electronics); Subject Term: HEAT transfer; Subject Term: ELECTRONIC apparatus & appliances -- Cooling; Subject Term: SEMICONDUCTORS -- Cooling; Subject Term: ANTENNAS (Electronics); Author-Supplied Keyword: antenna efficiency; Author-Supplied Keyword: antenna gain; Author-Supplied Keyword: heatsink; Author-Supplied Keyword: high-density packaging; Author-Supplied Keyword: patch antenna; Author-Supplied Keyword: power amplifier; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 6p; Illustrations: 1 Color Photograph, 5 Diagrams, 3 Charts, 7 Graphs; Document Type: Article L3 - 10.1002/mop.23478 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31826248&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Evans, D. R. AU - Cook, G. AU - Carns, J. L. T1 - Holographic and Nonholographic Organic-Inorganic Hybrids. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2008/07// VL - 488 IS - 1 M3 - Article SP - 190 EP - 201 SN - 15421406 AB - In this article, we review the concepts of holographic and nonholographic organic-inorganic hybrids, both comprising a liquid crystal layer adjacent to inorganic crystalline windows. Photo-generated fields from photorefractive (holographic) or photovoltaic (nonholographic) crystalline windows govern the orientation of the liquid crystal molecules in the hybrid cells. Holographic hybrids have been used to demonstrate a high gain Bragg-matched beam coupling, whereas nonholographic hybrids have been used to demonstrate a lensing effect. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - HOLOGRAPHY KW - LIGHT sources KW - BRAGG gratings KW - LASER beams KW - PHOTOVOLTAIC power generation KW - hybrids KW - liquid crystal KW - photo refractive KW - photovoltaic N1 - Accession Number: 34294152; Evans, D. R. 1; Email Address: dean.evans@wpafb.af.mil Cook, G. 1,2 Carns, J. L. 1,3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio, USA 2: Universal Technology Corporation, Dayton, Ohio, USA 3: General Dynamics Information Technology, Dayton, Ohio, USA; Source Info: 2008, Vol. 488 Issue 1, p190; Subject Term: LIQUID crystals; Subject Term: HOLOGRAPHY; Subject Term: LIGHT sources; Subject Term: BRAGG gratings; Subject Term: LASER beams; Subject Term: PHOTOVOLTAIC power generation; Author-Supplied Keyword: hybrids; Author-Supplied Keyword: liquid crystal; Author-Supplied Keyword: photo refractive; Author-Supplied Keyword: photovoltaic; Number of Pages: 12p; Illustrations: 1 Black and White Photograph, 3 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1080/15421400802218538 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34294152&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tondiglia, Vincent P. AU - Natarajan, Lalgudi V. AU - Sutherland, Richard L. AU - Lloyd, Pamela F. AU - Bunning, Timothy J. T1 - Improvement of Electro-Optical Properties of HPDLC Gratings by in situ Shearing During Holographic Recording. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2008/07// VL - 488 IS - 1 M3 - Article SP - 202 EP - 209 SN - 15421406 AB - We report the results of the recording of holographic polymer-dispersed liquid crystal (HPDLC) reflection gratings while applying a shear stress parallel to the film plane. The shear is transmitted through the film by moving one glass window with respect to a fixed glass window during the holographic recording in a single beam, total internal reflection geometry. The optical properties of the resulting Bragg grating are related to timing and magnitude of the stress. High diffraction efficiency for light polarized in a direction parallel to the stress is obtained with nearly zero diffraction efficiency (DE) for the perpendicular polarization. Contrary to post-recording stress-induced polarization sensitization, the in situ process results in permanently polarized gratings. The polarization sensitivity is related to stress-induced morphology changes of liquid crystal droplets that are frozen at gelation of the thio-ene polymerization process. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BRAGG gratings KW - LIQUID crystals KW - OPTICAL polarization KW - POLYMERS KW - ELECTROOPTICS KW - HOLOGRAPHY KW - Bragg grating KW - droplet alignment control KW - holography KW - polymer dispersed liquid crystal KW - shear KW - thiol-ene polymers N1 - Accession Number: 34294151; Tondiglia, Vincent P. 1,2; Email Address: vlncent.tondiglia@SAIC.com Natarajan, Lalgudi V. 1,2 Sutherland, Richard L. 1,2 Lloyd, Pamela F. 3 Bunning, Timothy J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH, USA 2: Science Applications International Corporation, Beavercreek, OH, USA 3: UES Inc., Dayton, OH, USA; Source Info: 2008, Vol. 488 Issue 1, p202; Subject Term: BRAGG gratings; Subject Term: LIQUID crystals; Subject Term: OPTICAL polarization; Subject Term: POLYMERS; Subject Term: ELECTROOPTICS; Subject Term: HOLOGRAPHY; Author-Supplied Keyword: Bragg grating; Author-Supplied Keyword: droplet alignment control; Author-Supplied Keyword: holography; Author-Supplied Keyword: polymer dispersed liquid crystal; Author-Supplied Keyword: shear; Author-Supplied Keyword: thiol-ene polymers; Number of Pages: 8p; Illustrations: 3 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1080/15421400802240599 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34294151&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nalladega, V. AU - Sathish, S. AU - Jata, K. V. AU - Blodgett, M. P. T1 - Development of eddy current microscopy for high resolution electrical conductivity imaging using atomic force microscopy. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2008/07// VL - 79 IS - 7 M3 - Article SP - 073705 PB - American Institute of Physics SN - 00346748 AB - We present a high resolution electrical conductivity imaging technique based on the principles of eddy current and atomic force microscopy (AFM). An electromagnetic coil is used to generate eddy currents in an electrically conducting material. The eddy currents generated in the conducting sample are detected and measured with a magnetic tip attached to a flexible cantilever of an AFM. The eddy current generation and its interaction with the magnetic tip cantilever are theoretically modeled using monopole approximation. The model is used to estimate the eddy current force between the magnetic tip and the electrically conducting sample. The theoretical model is also used to choose a magnetic tip–cantilever system with appropriate magnetic field and spring constant to facilitate the design of a high resolution electrical conductivity imaging system. The force between the tip and the sample due to eddy currents is measured as a function of the separation distance and compared to the model in a single crystal copper. Images of electrical conductivity variations in a polycrystalline dual phase titanium alloy (Ti-6Al-4V) sample are obtained by scanning the magnetic tip–cantilever held at a standoff distance from the sample surface. The contrast in the image is explained based on the electrical conductivity and eddy current force between the magnetic tip and the sample. The spatial resolution of the eddy current imaging system is determined by imaging carbon nanofibers in a polymer matrix. The advantages, limitations, and applications of the technique are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - MICROSCOPY KW - ELECTRIC conductivity KW - ATOMIC force microscopy KW - OPTOELECTRONIC devices KW - CRYSTALLINE polymers KW - COPPER KW - MAGNETIC fields N1 - Accession Number: 33547228; Nalladega, V. 1 Sathish, S. 2 Jata, K. V. 3 Blodgett, M. P. 3; Affiliation: 1: Department of Mechanical Engineering, University of Dayton, Dayton, Ohio 45469, 2: University of Dayton Research Institute, Dayton, Ohio 45469, 3: Air Force Research Laboratory, Wright Patterson AFB, Dayton, Ohio 45433,; Source Info: Jul2008, Vol. 79 Issue 7, p073705; Subject Term: EDDY currents (Electric); Subject Term: MICROSCOPY; Subject Term: ELECTRIC conductivity; Subject Term: ATOMIC force microscopy; Subject Term: OPTOELECTRONIC devices; Subject Term: CRYSTALLINE polymers; Subject Term: COPPER; Subject Term: MAGNETIC fields; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 11p; Illustrations: 1 Color Photograph, 2 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.2955470 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33547228&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kundu, Tribikram AU - Das, Samik AU - Martin, Steven A. AU - Jata, Kumar V. T1 - Locating point of impact in anisotropic fiber reinforced composite plates JO - Ultrasonics JF - Ultrasonics Y1 - 2008/07// VL - 48 IS - 3 M3 - Article SP - 193 EP - 201 SN - 0041624X AB - Abstract: The conventional triangulation technique cannot predict the point of impact in an anisotropic composite plate because the triangulation technique assumes that the wave speed is independent of the direction of propagation which is not the case for anisotropic plates. An alternative method based on the optimization scheme was proposed by Kundu et al. [T. Kundu, S. Das, K.V. Jata, Point of impact prediction in isotropic and anistropic plates from the acoustic emission data, J. Acoust. Soc. Am. 122, 2007, 2057–2066] to locate the point of impact in plates by analyzing the time of arrival of the ultrasonic signals received by the passive sensors attached to the plate. In this paper, that objective function is modified further to overcome the inherent difficulties associated with multiple singularities and to maximize the efficiency of the acoustic emission data for multiple receiving sensors. With this modified objective function the impact point on an anisotropic composite plate is predicted from the acoustic emission data. Experiments are carried out by dropping steel and ping pong balls on a graphite-epoxy composite plate and recording acoustic signals by passive transducers adhesively bonded to the plate at three different locations. The impact point is predicted by the proposed method and compared with the actual location of impact. [Copyright &y& Elsevier] AB - Copyright of Ultrasonics is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANISOTROPY KW - ACOUSTICAL engineering KW - STRESS waves KW - ELECTROMECHANICAL devices KW - Acoustic emission KW - Anisotropic composite plate KW - Impact KW - Lamb wave KW - Passive monitoring N1 - Accession Number: 32843103; Kundu, Tribikram 1; Email Address: tkundu@email.arizona.edu Das, Samik 1; Email Address: samik@email.arizona.edu Martin, Steven A. 2; Email Address: steven.martin@wpafb.af.mil Jata, Kumar V. 3; Email Address: Kumar.Jata@wpafb.af.mil; Affiliation: 1: Department of Civil Engineering and Engineering Mechanics, University of Arizona, Tucson, AZ 85721, United States 2: NDE Computational Consultants, AFRL/MLLP, Wright Patterson Air Force Base, OH 45433, United States 3: Air Force Research Laboratory, MLLP, NDE Branch, Wright Patterson Air Force Base, OH 45433, United States; Source Info: Jul2008, Vol. 48 Issue 3, p193; Subject Term: ANISOTROPY; Subject Term: ACOUSTICAL engineering; Subject Term: STRESS waves; Subject Term: ELECTROMECHANICAL devices; Author-Supplied Keyword: Acoustic emission; Author-Supplied Keyword: Anisotropic composite plate; Author-Supplied Keyword: Impact; Author-Supplied Keyword: Lamb wave; Author-Supplied Keyword: Passive monitoring; NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; NAICS/Industry Codes: 334514 Totalizing Fluid Meter and Counting Device Manufacturing; NAICS/Industry Codes: 334512 Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334290 Other Communications Equipment Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ultras.2007.12.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32843103&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - P. Golden AU - A. Hutson AU - B. Bartha AU - T. Nicholas T1 - Fatigue Loading and Life Prediction in Three Fretting Fatigue Fixtures. JO - Experimental Mechanics JF - Experimental Mechanics Y1 - 2008/06/30/ VL - 48 IS - 3 M3 - Article SP - 253 EP - 263 SN - 00144851 AB - Abstract  Three fixtures for conducting laboratory fretting fatigue tests are described and their respective testing methods and the results of the analysis are compared. Each of these fixtures has been used to investigate the effects of various parameters of interest in fretting fatigue. These fixtures include a unique apparatus in which all load applied to the specimen is transferred to the fretting pads, an apparatus similar to many found in the literature where partial load transfer occurs across the pads, and a simplified dovetail fixture in which the clamping load, P, and the shear load, Q, are varied in phase. Select test conditions from prior experiments performed on identical material and resulting in similar lives ranging from one to ten million cycles from these fixtures are identified. The various testing conditions were used to compute the unique stress field for each case. The resulting contact stresses were used to calculate crack initiation based criteria, and to calculate stress intensity factors. The three fixtures were shown to be able to accommodate a range of loads, fretting pad contours, and specimen geometries that produced a variety of stress fields. A crack-initiation-based criterion was shown to predict the failure lives of thinner specimens accurately. The stress intensity factor calculations showed the possibility of a crack arresting for a stress field that decays rapidly and the possibility of a local minimum for K as a function of depth. The fixtures are shown to be complementary in generating data for development of robust fretting fatigue models that use these criteria. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Fatigue KW - JIGS & fixtures KW - STRAINS & stresses (Mechanics) KW - MATERIALS -- Testing KW - STRENGTH of materials KW - MECHANICS (Physics) KW - FATIGUE testing machines N1 - Accession Number: 32932878; P. Golden 1 A. Hutson 2 B. Bartha 3 T. Nicholas 4; Affiliation: 1: Air Force Research Laboratory, AFRL/MLLMN Wright-Patterson AFB OH 45433-7817 USA 2: University of Dayton Research Institute Dayton OH 45469-0128 USA 3: Universal Technology Corporation Wright-Patterson AFB OH 45433-7817 USA 4: Air Force Institute of Technology, AFIT/ENY Wright-Patterson AFB OH 45433-7765 USA; Source Info: Jun2008, Vol. 48 Issue 3, p253; Subject Term: MATERIALS -- Fatigue; Subject Term: JIGS & fixtures; Subject Term: STRAINS & stresses (Mechanics); Subject Term: MATERIALS -- Testing; Subject Term: STRENGTH of materials; Subject Term: MECHANICS (Physics); Subject Term: FATIGUE testing machines; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; NAICS/Industry Codes: 333514 Special Die and Tool, Die Set, Jig, and Fixture Manufacturing; Number of Pages: 11p; Illustrations: 1 Black and White Photograph, 4 Diagrams, 1 Chart, 6 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32932878&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Crouse, Christopher A. AU - Maruyama, Benji AU - Colorado Jr, Ramon AU - Back, Tyson AU - Barron, Andrew R. T1 - Growth, New Growth, and Amplification of Carbon Nanotubes as a Function of Catalyst Composition. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2008/06/25/ VL - 130 IS - 25 M3 - Article SP - 7946 EP - 7954 SN - 00027863 AB - Carbon nanotubes (CNTs) have been grown using Fe, Co, Ni, and Co/Fe spin-on-catalyst (SOC) systems, involving the metal salt dispersed with a spin-on-glass precursor. During initial growth runs (CH4/H2/900 °C), the CNT yield followed the order Co-SOC > Fe-SOC ⪢ Ni-SOC. The Fe catalysts produced the longest nanotubes at the expense of a larger average CNT diameter and broader diameter distribution than the Co-SOC system. A series of Co/Fe-SOCs were prepared where as the atomic percentage of Co is increased nucleation of CNT increases but the CNT length decreases. The linear relationship between the diameter and length of CNTs grown from the Co/Fe-SOC suggests that slow growth is beneficial with respect to control over CNT diameter. After initial CNT growth, the original samples were subjected to additional growth runs. Four individual reactions were observed in the Fe-SOC and binary Co/Fe-SOC: regrowth (amplification), double growth (a second CNT growing from a previously active catalyst), CNT etching, and nucleation from initially inactive catalysts (new growth). CNT etching was observed for the mixed catalyst systems (Co/Fe-SOC) but not for either Fe-SOC or Co-SOC. During the regrowth experiments, CNTs were observed that were not present after the initial growth run (and were not as a result of amplification or double growth). Thus, catalysts, which were initially inactive toward nucleation of CNTs in the original growth run, are capable of becoming activated when placed back into the furnace and submitted to regrowth under identical conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - CATALYSTS KW - CATALYSIS KW - CHEMICAL inhibitors KW - NUCLEATION N1 - Accession Number: 33224888; Crouse, Christopher A. 1 Maruyama, Benji 2 Colorado Jr, Ramon 1 Back, Tyson 2 Barron, Andrew R. 1; Email Address: arb@rice.edu; Affiliation: 1: Richard E. Smalley Institute for Nanoscale Science and Technology, nano Carbon Center (nC²), and Department of Chemistry, Rice University, Houston, Texas 77005 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, Dayton, Ohio 45433; Source Info: 6/25/2008, Vol. 130 Issue 25, p7946; Subject Term: CARBON nanotubes; Subject Term: CATALYSTS; Subject Term: CATALYSIS; Subject Term: CHEMICAL inhibitors; Subject Term: NUCLEATION; Number of Pages: 9p; Illustrations: 6 Black and White Photographs, 2 Diagrams, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1021/ja800233b UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33224888&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, Jeoung Han AU - Semiatin, S.L. AU - Lee, Chong Soo T1 - High-temperature deformation and grain-boundary characteristics of titanium alloys with an equiaxed microstructure JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2008/06/25/ VL - 485 IS - 1/2 M3 - Article SP - 601 EP - 612 SN - 09215093 AB - Abstract: The high-temperature deformation behavior of single-phase α (Ti–7.0Al–1.5V), near-α (Ti–6.85Al–1.6V), and two-phase (Ti–6Al–4V) titanium alloys with an equiaxed microstructure was examined, and the results were compared within the framework of an internal-variable theory of inelastic deformation. For this purpose, load-relaxation and tension tests were conducted at various temperatures. Stress–strain-rate curves obtained by load-relaxation tests for the three alloys were well described by the equations for grain-matrix deformation and grain-boundary sliding. With respect to boundary strength, the internal-strength parameter (σ*) for α–α boundaries was found to be ∼2 times higher than that for α–β boundaries. The friction stress parameter (Σ g) of boundaries was the highest in the single-phase α alloy and the lowest in the two-phase (α+β) alloy. This indicates that grain-boundary sliding occurs preferentially at α–β interfaces rather than at α–α boundaries. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - HEAT resistant alloys KW - DEFORMATIONS (Mechanics) KW - CRYSTAL grain boundaries KW - Grain-boundary sliding KW - Grain-matrix deformation KW - Internal-variable theory KW - Phase volume fraction KW - Ti–6Al–4V N1 - Accession Number: 31753568; Kim, Jeoung Han 1 Semiatin, S.L. 2 Lee, Chong Soo 3; Email Address: cslee@postech.ac.kr; Affiliation: 1: Materials Processing Research Center, Korea Institute of Machinery and Materials, Changwon 641-010, Republic of Korea 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7817, USA 3: Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea; Source Info: Jun2008, Vol. 485 Issue 1/2, p601; Subject Term: TITANIUM alloys; Subject Term: HEAT resistant alloys; Subject Term: DEFORMATIONS (Mechanics); Subject Term: CRYSTAL grain boundaries; Author-Supplied Keyword: Grain-boundary sliding; Author-Supplied Keyword: Grain-matrix deformation; Author-Supplied Keyword: Internal-variable theory; Author-Supplied Keyword: Phase volume fraction; Author-Supplied Keyword: Ti–6Al–4V; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.msea.2007.08.027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31753568&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Burt, Trevor D. AU - Agan, Brian K. AU - Marconi, Vincent C. AU - Weijing He AU - Kulkarni, Hemant AU - Mold, Jeffrey E. AU - Cavrois, Marielle AU - Yadong Huang AU - Mahley, Robert W. AU - Dolan, Matthew J. AU - McCune, Joseph M. AU - Ahuja, Sunil K. T1 - Apolipoprotein (apo) E4 enhances HIV-1 cell entry in vitro, and the APOE ϵ4/ϵ4 genotype accelerates HIV disease progression. JO - Proceedings of the National Academy of Sciences of the United States of America JF - Proceedings of the National Academy of Sciences of the United States of America Y1 - 2008/06/24/ VL - 105 IS - 25 M3 - Article SP - 8718 EP - 8723 SN - 00278424 AB - Originally recognized for their role in lipoprotein metabolism and cardiovascular disease, apolipoprotein (apo) E isoforms (apoE2, apoE3, and apoE4) have also been implicated to play a key role in several biological processes not directly related to their lipid transport function. For example, apoE4 contributes significantly to neurodegeneration in Alzheimer's disease. However, the role of apoE in infectious diseases is less well defined. Here, by examining a large cohort of HIV+ European and African American subjects, we found that the APOE ϵ4/ϵ4 genotype is associated with an accelerated disease course and especially progression to death compared with the APOE ϵ3/ϵ3 genotype. However, an association between the ϵ4/ϵ4 genotype and HIV-associated dementia (HAD), a neurological condition with clinicopathological features similar to Alzheimer's disease, was not detected. Consistent with the genotype-phenotype relationships observed, compared with recombinant apoE3, apoE4 enhanced HIV fusion/cell entry of both R5 and X4 HIV strains in vitro. These findings establish apoE as a determinant of HIV-AIDS pathogenesis and raise the possibility that current efforts to convert apoE4 to an "apoE3-like" molecule to treat Alzheimer's disease might also have clinical applicability in HIV disease. [ABSTRACT FROM AUTHOR] AB - Copyright of Proceedings of the National Academy of Sciences of the United States of America is the property of National Academy of Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - APOLIPOPROTEIN E KW - HIV infections KW - ALZHEIMER'S disease KW - NEURODEGENERATION KW - GENETIC polymorphisms KW - GENETIC research KW - apoE KW - fusion/cell entry KW - HIV/AIDS KW - infectious diseases N1 - Accession Number: 32919270; Burt, Trevor D. 1,2 Agan, Brian K. 3,4,5,6 Marconi, Vincent C. 3,4,6 Weijing He 7 Kulkarni, Hemant 7 Mold, Jeffrey E. 1 Cavrois, Marielle 8 Yadong Huang 9 Mahley, Robert W. 9,10; Email Address: rmahley@gladstone.ucsf.edu Dolan, Matthew J. 3,4,5,6; Email Address: mdolan@hfj.org McCune, Joseph M. 1; Email Address: mike.mccune@ucsf.edu Ahuja, Sunil K. 7,11; Email Address: ahujas@uthscsa.edu; Affiliation: 1: Division of Experimental Medicine, Department of Medicine, University of California, San Francisco, CA 94110 2: Division of Neonatology, Department of Pediatrics, University of California, San Francisco, CA 94110 3: Infectious Disease Clinical Research Program, Uniformed Services University of the Health Sciences, Bethesda, MD 20814 4: Infectious Diseases Service, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, TX 78236 5: Henry M. Jackson Foundation, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, TX 78236 6: San Antonio Military Medical Center, Ft. Sam Houston and Lackland Air Force Base, TX 78234 7: Veterans Administration Research Center for AIDS and HIV-1 Infection, South Texas Veterans Health Care System and Department of Medicine, University of Texas Health Science Center, San Antonio, TX 78229 8: Gladstone Institutes of Virology and Immunology, University of California, San Francisco, CA 94158 9: Gladstone Institutes of Neurological Disease, University of California, San Francisco, CA 94158 10: Gladstone Institutes of Cardiovascular Disease, University of California, San Francisco, CA 94158 11: Department of Microbiology and Immunology and Department of Biochemistry, University of Texas Health Science Center, San Antonio, TX 78229; Source Info: 6/24/2008, Vol. 105 Issue 25, p8718; Subject Term: APOLIPOPROTEIN E; Subject Term: HIV infections; Subject Term: ALZHEIMER'S disease; Subject Term: NEURODEGENERATION; Subject Term: GENETIC polymorphisms; Subject Term: GENETIC research; Author-Supplied Keyword: apoE; Author-Supplied Keyword: fusion/cell entry; Author-Supplied Keyword: HIV/AIDS; Author-Supplied Keyword: infectious diseases; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; Number of Pages: 6p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1073/pnas.0803526105 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32919270&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sun, Qingjiang AU - Chang, Dong Wook AU - Dai, Liming AU - Grote, James AU - Naik, Rajesh T1 - Multilayer white polymer light-emitting diodes with deoxyribonucleic acid-cetyltrimetylammonium complex as a hole-transporting/ electron-blocking layer. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/06/23/ VL - 92 IS - 25 M3 - Article SP - 251108 PB - American Institute of Physics SN - 00036951 AB - Using a thin film of deoxyribonucleic acid-cetyltrimetylammonium (DNA-CTMA) complex as a hole-transporting/electron-blocking layer, we have developed a sequential solution-processing approach for constructing multilayer (up to five layers) white polymer light-emitting diodes, incorporating the poly(9,9-dioctylfluorene-2,7-diyl)/poly[2-methoxy-5(2′-ethyl-hexyloxy)-1, 4-phenylene vinylene] emissive layer. These devices were demonstrated to show a low turn-on voltage (∼5 V), high efficiency (10.0 cd/A), and high brightness (10500 cd/m2) with an improved white-color stability. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS -- Analysis KW - LIGHT emitting diodes KW - DNA KW - NUCLEIC acids KW - THIN films KW - PARTICLES (Nuclear physics) N1 - Accession Number: 32990978; Sun, Qingjiang 1 Chang, Dong Wook 1 Dai, Liming 1; Email Address: ldai@udayton.edu Grote, James 2 Naik, Rajesh 2; Affiliation: 1: Department of Chemical and Materials Engineering, University of Dayton, Dayton, Ohio 45469, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright-Patterson AFB, Ohio 45433, USA; Source Info: 6/23/2008, Vol. 92 Issue 25, p251108; Subject Term: POLYMERS -- Analysis; Subject Term: LIGHT emitting diodes; Subject Term: DNA; Subject Term: NUCLEIC acids; Subject Term: THIN films; Subject Term: PARTICLES (Nuclear physics); NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.2948864 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32990978&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zehnder, O. AU - Mastalerz, R. AU - Reiher, M. AU - Merkt, F. AU - Dressler, R. A. T1 - On the R-dependence of the spin-orbit coupling constant: Potential energy functions of Xe2+ by high-resolution photoelectron spectroscopy and ab initio quantum chemistry. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2008/06/21/ VL - 128 IS - 23 M3 - Article SP - 234307 PB - American Institute of Physics SN - 00219606 AB - The pulsed-field-ionization zero-kinetic-energy photoelectron spectrum of Xe2 has been measured between 97 350 and 108 200 cm-1, following resonant two-photon excitation via selected vibrational levels of the C 0u+ Rydberg state of Xe2. Transitions to three of the six low-lying electronic states of Xe2+ could be observed. Whereas extensive vibrational progressions were observed for the transitions to the I(3/2g) and I(3/2u) states, only the lowest vibrational levels of the II(1/2u) state could be detected. Assignments of the vibrational quantum numbers were derived from the analysis of the isotopic shifts and from the modeling of the potential energy curves. Adiabatic ionization energies, dissociation energies, and vibrational constants are reported for the I(3/2g) and the I(3/2u) states. Multireference configurational interaction and complete active space self-consistent field calculations have been performed to investigate the dependence of the spin-orbit coupling constant on the internuclear distance. The energies of vibrational levels, measured presently and in a previous investigation (Rupper et al., J. Chem. Phys. 121, 8279 (2004)), were used to determine the potential energy functions of the six low-lying electronic states of Xe2+ using a global model that includes the long-range interaction and treats, for the first time, the spin-orbit interaction as dependent on the internuclear separation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCISSION (Chemistry) KW - ENERGY levels (Quantum mechanics) KW - DISSOCIATION (Chemistry) KW - IONIZATION (Atomic physics) KW - RYDBERG states N1 - Accession Number: 32841923; Zehnder, O. 1 Mastalerz, R. 1 Reiher, M. 1; Email Address: markus.reiher@phys.chem.ethz.ch Merkt, F. 1; Email Address: merkt@phys.chem.ethz.ch Dressler, R. A. 2,3; Affiliation: 1: Laboratorium für Physikalische Chemie, ETH Zurich, 8093 Zurich, Switzerland 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731-3010, USA 3: Spectral Sciences, Inc., 4 Fourth Av., Burlington, MA 01803-3804, USA; Source Info: 6/21/2008, Vol. 128 Issue 23, p234307; Subject Term: SCISSION (Chemistry); Subject Term: ENERGY levels (Quantum mechanics); Subject Term: DISSOCIATION (Chemistry); Subject Term: IONIZATION (Atomic physics); Subject Term: RYDBERG states; Number of Pages: 13p; Illustrations: 9 Charts, 7 Graphs; Document Type: Article L3 - 10.1063/1.2937133 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32841923&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - She1lhamer, Dale F. AU - Davenport, Kevyn J. AU - Forberg, Heidi K. AU - Herrick, Matthew P. AU - Jones, Rachel N. AU - Rodriguez, Sean J. AU - Sanabria, Sunamita AU - Trager, Nicole N. AU - Weiss, Ryan J. AU - Heasley, Victor L. AU - Boatz, Jerry A. T1 - Rearrangement of 3-Membered 1,1,2-Trifluorobromonium and Iodonium Ions and Comparison of Trifluorochloronium to Fluorocarbenium Ions. JO - Journal of Organic Chemistry JF - Journal of Organic Chemistry Y1 - 2008/06/20/ VL - 73 IS - 12 M3 - Article SP - 4532 EP - 4538 SN - 00223263 AB - Reactions of chlorine (Cl2) with 4-halo-1,1,2-trifluorobut-l-enes (1, 2, or 3) give open-ion intermediates A and E that are in equilibrium. The open-chloronium ions (E) rearrange to a five-membered-ring halonium ion during ionic chlorination of 3 when the number-4 halo-substituent is iodine. Three-membered-ring bromonium and iodonium ions from alkenes 1, 2, or 3 are rather symmetrical and similar in structure. Quantum chemical calculations show that five-membered-ring halonium ion intermediates are 11 to 27 kcal/mol more stable than the three-membered-ring halonium ions or the open-ions A and E. The five- membered-ring intermediates lead to rearranged products. Rearranged products increase as the number-4 halogen (Z) becomes more nucleophilic (Z: Cl < Br < I). Open chloronium ions from ionic chlorination of terminal fluorovinyl alkenes are compared to the open ions generated by protons to similar alkenes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Organic Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLUTION (Chemistry) KW - INTERMEDIATES (Chemistry) KW - ELECTRONS KW - MATTER -- Properties KW - HYDROCARBONS KW - EQUILIBRIUM N1 - Accession Number: 32720140; She1lhamer, Dale F. 1 Davenport, Kevyn J. 1 Forberg, Heidi K. 1 Herrick, Matthew P. 1 Jones, Rachel N. 1 Rodriguez, Sean J. 1 Sanabria, Sunamita 1 Trager, Nicole N. 1 Weiss, Ryan J. 1 Heasley, Victor L. 1 Boatz, Jerry A. 2; Email Address: dshellha@pointloma.edu; Affiliation: 1: Department of Chemistry, Point Loma Nazarene University, San Diego, California 92106-2899 2: Air Force Research Laboratory, Edwards Air Force Base, California 93524-7680; Source Info: 6/20/2008, Vol. 73 Issue 12, p4532; Subject Term: SOLUTION (Chemistry); Subject Term: INTERMEDIATES (Chemistry); Subject Term: ELECTRONS; Subject Term: MATTER -- Properties; Subject Term: HYDROCARBONS; Subject Term: EQUILIBRIUM; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; Number of Pages: 7p; Illustrations: 4 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32720140&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - C. Hunter AU - M. Check AU - C. Hager AU - A. Voevodin T1 - Tribological Properties of Carbon Nanopearls Synthesized by Nickel-Catalyzed Chemical Vapor Deposition. JO - Tribology Letters JF - Tribology Letters Y1 - 2008/06/20/ VL - 30 IS - 3 M3 - Article SP - 169 EP - 176 SN - 10238883 AB - Abstract  Carbon nanopearls have a unique layered structure made of nano-sized graphene fragments, which distinguishes them from closed-shell nano-carbons. This unique structure offers beneficial tribological properties which were evaluated in humid and dry environments. The lubricating effect was related to an easy shear of nano-sized graphene flakes from individual nanopearls. [ABSTRACT FROM AUTHOR] AB - Copyright of Tribology Letters is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VAPOR-plating KW - POSSESSION (Law) KW - CHEMICAL vapor deposition KW - LAYER structure (Solids) N1 - Accession Number: 33042718; C. Hunter 1 M. Check 1 C. Hager 1 A. Voevodin 1; Affiliation: 1: Air Force Research Laboratory Materials and Manufacturing Directorate 2941 Hobson Way Wright-Patterson AFB OH 45433-7750 USA; Source Info: Jun2008, Vol. 30 Issue 3, p169; Subject Term: VAPOR-plating; Subject Term: POSSESSION (Law); Subject Term: CHEMICAL vapor deposition; Subject Term: LAYER structure (Solids); Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33042718&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cui, Yunlong AU - Roy, Utpal N. AU - Burger, Arnold AU - Goldstein, Jonathan T. T1 - Photoluminescence study of AgGaSe2, AgGa0.9In0.1Se2, and AgGa0.8In0.2Se2 crystals grown by the horizontal Bridgman technique. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/06/15/ VL - 103 IS - 12 M3 - Article SP - 123514 PB - American Institute of Physics SN - 00218979 AB - AgGaSe2, AgGa0.9In0.1Se2, and AgGa0.8In0.2Se2 single crystals grown by the horizontal Bridgman technique were investigated using photoluminescence (PL) at temperatures varied from 8 to 300 K. For the AgGaSe2 crystals, free exciton (FE), exciton bound to neutral donor (D0, X), and edge emissions including donor-acceptor pair (DAP) and free electron to neutral acceptor (e, A0) transitions were observed. Two donor levels with binding energies of 18 and 39 meV and two acceptor levels with 61 and 117 meV were observed. The FE peak positions of the AgGaSe2 were found to be blueshifted when the samples were illuminated with higher laser intensity. This behavior was more pronounced at higher temperature when the peaks were also significantly broadened. For the AgGa0.9In0.1Se2 crystals, three DAP emission peaks at 1.673, 1.570, and 1.545 eV were observed at 8 K. The excitonic peaks were not observed below 100 K because they were overshadowed by the 1.673 eV DAP emission. For the AgGa0.8In0.2Se2 crystal, the excitonic peak was barely resolved in the PL spectra at 9 K, and only two shallow defect levels were shown. The temperature coefficients of the band-gap energies of the crystals were measured. The thermal expansion effect of the AgGa0.8In0.2Se2 crystal was found to be much larger than that of AgGaSe2. The PL study showed that the AgGa0.8In0.2Se2 crystal had advantages over the AgGa0.9In0.1Se2 crystal for their use as potential radiation detectors. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOLUMINESCENCE KW - CRYSTALLOGRAPHY KW - PARTICLES (Nuclear physics) KW - NUCLEAR energy KW - BINDING energy KW - NUCLEAR physics N1 - Accession Number: 32969928; Cui, Yunlong 1 Roy, Utpal N. 1 Burger, Arnold 1 Goldstein, Jonathan T. 2; Affiliation: 1: Physics Department, Fisk University, Nashville, Tennessee 37208, 2: Air Force Research Laboratory, Wright Patterson Air Force Base (WPAFB), Ohio 45433,; Source Info: Jun2008, Vol. 103 Issue 12, p123514; Subject Term: PHOTOLUMINESCENCE; Subject Term: CRYSTALLOGRAPHY; Subject Term: PARTICLES (Nuclear physics); Subject Term: NUCLEAR energy; Subject Term: BINDING energy; Subject Term: NUCLEAR physics; NAICS/Industry Codes: 221113 Nuclear Electric Power Generation; Number of Pages: 6p; Illustrations: 7 Graphs; Document Type: Article L3 - 10.1063/1.2940739 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32969928&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shiao, Wen-Yu AU - Tang, Tsung-Yi AU - Chen, Yung-Sheng AU - Averett, K.L. AU - Albrecht, J.D. AU - Yang, C.C. T1 - Characterizing the thickness dependence of epitaxial GaN grown over GaN nanocolumns using X-ray diffraction JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2008/06/15/ VL - 310 IS - 13 M3 - Article SP - 3159 EP - 3162 SN - 00220248 AB - Abstract: The crystal quality, as determined by X-ray diffraction, of GaN epitaxial films synthesized by MOCVD overgrowth of oriented GaN nanocolumns on Si(111) is studied as a function of film thickness and compared with control films grown on sapphire substrate. Samples were characterized using a three-beam X-ray diffraction technique from which depth-dependent rocking-curve widths (for the (011¯3)/(01¯ 12¯) crystal plane) are obtained as functions of depth. Through the examination of four samples prepared under conditions spanning key growth parameters it is found that optimizing for overgrowth at higher substrate temperatures can lead to coalesced films with significantly narrower rocking-curve widths. The results indicate that initially disconnected crystal domains stemming from individual columns do merge under the right conditions and that the coalesced crystal improves with increasing thickness. Overgrowth with the substrate temperature at 1000°C (the highest of the study) resulted in a GaN overgrowth with properties superior to those of the control sample, a standard high-quality 2μm MOCVD GaN thin-film grown on sapphire substrate. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VAPOR-plating KW - EPITAXY KW - CRYSTAL growth KW - MOLECULAR beam epitaxy KW - A1. Nanostructures KW - A3. Metalorganic chemical vapor deposition KW - A3. Molecular beam epitaxy KW - B1. Nitrides N1 - Accession Number: 32558707; Shiao, Wen-Yu 1 Tang, Tsung-Yi 1 Chen, Yung-Sheng 1 Averett, K.L. 2 Albrecht, J.D. 3 Yang, C.C. 4; Email Address: ccy@cc.ee.ntu.edu.tw; Affiliation: 1: Institute of Photonics and Optoelectronics, National Taiwan University, Taipei, Taiwan, ROC 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7322, USA 3: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson Air Force Base, OH 45433-7322, USA 4: Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, 1, Roosevelt Road, Section 4, Taipei 10617, Taiwan, ROC; Source Info: Jun2008, Vol. 310 Issue 13, p3159; Subject Term: VAPOR-plating; Subject Term: EPITAXY; Subject Term: CRYSTAL growth; Subject Term: MOLECULAR beam epitaxy; Author-Supplied Keyword: A1. Nanostructures; Author-Supplied Keyword: A3. Metalorganic chemical vapor deposition; Author-Supplied Keyword: A3. Molecular beam epitaxy; Author-Supplied Keyword: B1. Nitrides; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jcrysgro.2008.04.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32558707&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cooper, Lisa Noelle AU - Sedano, Nils AU - Johansson, Stig AU - May, Bryan AU - Brown, Joey D. AU - Holliday, Casey M. AU - Kot, Brian W. AU - Fish, Frank E. T1 - Hydrodynamic performance of the minke whale (Balaenoptera acutorostrata) flipper. JO - Journal of Experimental Biology JF - Journal of Experimental Biology Y1 - 2008/06/15/ VL - 211 IS - 12 M3 - Article SP - 1859 EP - 1867 SN - 00220949 AB - Minke whales (Balaenoptera acutorostrata) are the smallest member of balaenopterid whales and little is known of their kinematics during feeding maneuvers. These whales have narrow and elongated flippers that are small relative to body size compared to related species such as right and gray whales. No experimental studies have addressed the hydrodynamic properties of minke whale flippers and their functional role during feeding maneuvers. This study integrated wind tunnel, locomotion and anatomical range of motion data to identify functional parameters of the cambered minke whale flipper. A full-sized cast of a minke whale flipper was used in wind tunnel testing of lift, drag and stall behavior at six speeds, corresponding to swimming speeds of 0.7-8.9 m s-1. Flow over the model surface stalled between 10° and 14° angle of attack (α) depending on testing speed. When the leading edge was rotated ventrally, loss in lift occurred around -18° α regardless of speed. Range of mobility in the fresh limb was approximately 40% greater than the range of positive lift-generating angles of attack predicted by wind tunnel data (+14° α). Video footage, photographs and observations of swimming, engulfment feeding and gulping minke whales showed limb positions corresponding to low drag in wind tunnel tests, and were therefore hydrodynamically efficient. Flippers play an important role in orienting the body during feeding maneuvers as they maintain trim of the body, an action that counters drag-induced torque of the body during water and prey intake. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Experimental Biology is the property of Company of Biologists Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MINKE whale KW - HYDRODYNAMICS KW - WIND tunnels KW - ANIMAL behavior KW - ANIMAL orientation KW - Cetacea KW - control surface KW - engulfment KW - feeding KW - flipper KW - forelimb KW - hydrodynamics KW - lunge KW - wind tunnel N1 - Accession Number: 33480644; Cooper, Lisa Noelle 1,2; Email Address: I.noelle.cooper@gmail.com Sedano, Nils 3 Johansson, Stig 4 May, Bryan 5 Brown, Joey D. 6 Holliday, Casey M. 7 Kot, Brian W. 8 Fish, Frank E. 9; Affiliation: 1: Department of Anatomy, Northeastern Ohio Universities College of Medicine, Rootstown, OH 44201, USA 2: School of Biomedical Sciences, Kent State University, Kent, OH 44242, USA 3: Air Force Research Laboratory, Liquid Rocket Engines Branch, 4 Draco Drive, Edwards Air Force Base, CA 93524, USA 4: Department of Aerospace Engineering and Engineering Mechanics, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, USA 5: 2217 Burrough Street, Unit #1, San Diego, CA 92111, USA 6: NASA Jet Propulsion Laboratory, 4800 Oak Grove Drive M/S Ti 723-118, Pasadena, CA 91109, USA 7: Department of Anatomy and Pathology, Joan C. Edwards School of Medicine, 1542 Spring Valley Drive, Huntington, WV 25704, USA 8: Department of Ecology and Evolutionary Biology, University of California, Los Angeles, Box 1606, 621 Charles E. Young Drive South, Los Angeles, CA 90095-1 606, USA 9: Department of Biology, West Chester University, 750 S. Church Street, West Chester, PA 19383, USA; Source Info: Jun2008, Vol. 211 Issue 12, p1859; Subject Term: MINKE whale; Subject Term: HYDRODYNAMICS; Subject Term: WIND tunnels; Subject Term: ANIMAL behavior; Subject Term: ANIMAL orientation; Author-Supplied Keyword: Cetacea; Author-Supplied Keyword: control surface; Author-Supplied Keyword: engulfment; Author-Supplied Keyword: feeding; Author-Supplied Keyword: flipper; Author-Supplied Keyword: forelimb; Author-Supplied Keyword: hydrodynamics; Author-Supplied Keyword: lunge; Author-Supplied Keyword: wind tunnel; Number of Pages: 9p; Illustrations: 6 Diagrams, 2 Charts, 1 Graph; Document Type: Article L3 - 10.1242/jeb.014134 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33480644&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ivasishin, O.M. AU - Markovsky, P.E. AU - Matviychuk, Yu.V. AU - Semiatin, S.L. AU - Ward, C.H. AU - Fox, S. T1 - A comparative study of the mechanical properties of high-strength β-titanium alloys JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2008/06/12/ VL - 457 IS - 1/2 M3 - Article SP - 296 EP - 309 SN - 09258388 AB - Abstract: The mechanical properties of four commercial β-titanium alloys (TIMETAL-LCB, Ti-15-3, β-21S, and VT22) were compared in the solution-treated-and-aged (STA) condition following thermomechanical processing comprising β solid solutioning, cold deformation (CD), continuous rapid heating, and final aging. The peak temperature during the rapid heating step was chosen to obtain either a recovered or recrystallized condition and thereby to control the distribution of residual deformation defects, which in turn influenced the size and distribution of α precipitates in the final microstructure. It was established that a good balance of high strength (in excess of 1600MPa) and reasonable ductility could be obtained if a fine-grain microstructure with a β grain size of ∼10μm was formed by recrystallization. The development of such a fine-grain size enabled a reduction in the aging temperature and thus increased the strength while maintaining ductility within the desired limits. In this respect, the properties could be varied to a great extent by varying the rate of heating to the aging temperature. On the other hand, aging of the recovered condition also led to a strength level of approximately 1600MPa but with generally lower ductility than in the fine-grain, recrystallized condition. Another distinctive feature of the recovered condition was that the properties were relatively insensitive to the rate of heating to the aging temperature. [Copyright &y& Elsevier] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMISTRY KW - PRECIPITATION (Chemistry) KW - TITANIUM alloys KW - METALS -- Mechanical properties KW - Mechanical properties KW - Metals KW - Precipitation N1 - Accession Number: 31923768; Ivasishin, O.M. 1; Email Address: ivas@imp.kiev.ua Markovsky, P.E. 1 Matviychuk, Yu.V. 1 Semiatin, S.L. 2 Ward, C.H. 2 Fox, S. 3; Affiliation: 1: Institute for Metal Physics, 36 Vernadsky St., Kiev 03142, Ukraine 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7817, USA 3: TIMET Henderson Laboratory, NV, USA; Source Info: Jun2008, Vol. 457 Issue 1/2, p296; Subject Term: CHEMISTRY; Subject Term: PRECIPITATION (Chemistry); Subject Term: TITANIUM alloys; Subject Term: METALS -- Mechanical properties; Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Metals; Author-Supplied Keyword: Precipitation; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.jallcom.2007.03.070 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31923768&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanley E. Anderson AU - Dena J. Bodzin AU - Timothy S. Haddad AU - Jerry A. Boatz AU - Joseph M. Mabry AU - Connie Mitchell AU - Michael T. Bowers T1 - Structural Investigation of Encapsulated Fluoride in Polyhedral Oligomeric Silsesquioxane Cages Using Ion Mobility Mass Spectrometry and Molecular Mechanics. JO - Chemistry of Materials JF - Chemistry of Materials Y1 - 2008/06/11/ VL - 20 IS - 13 M3 - Article SP - 4299 EP - 4309 SN - 08974756 AB - A new series of encapsulated fluoride polyhedral oligomeric silsesquioxane (POSS) materials, [(CH 3) 4N +][F −@(R 8Si 8O 12)], where R = vinyl, phenyl, styrenyl, trifluoropropyl, nonafluorohexyl, or tridecafluorooctyl, were synthesized by the reaction of tetramethylammonium fluoride with the R 8Si 8O 12POSS in tetrahydrofuran. Encapsulation of the fluoride was confirmed with 19F and 29Si NMR spectroscopy. Ion mobility and molecular modeling methods were used to investigate the gas phase conformational properties of these POSS. Theoretical calculations demonstrate that the binding energy of fluoride to the interior of the POSS cage ranges from 70 to 270 kcal/mol as a function of substituent. Sodiated positive ions of the form H +[F −@R 8T 8]Na +(T = SiO 3/2, R = styrenyl, phenyl, and vinyl) were examined by MALDI; ESI was used to study the negative ions F −@R 8T 8(R = styrenyl, phenyl, vinyl, trifluoropropyl, and nonafluorohexyl). The ion mobilities of these species were measured and used to calculate collision cross sections. These cross sections were compared to X-ray crystal structures and theoretical cross sections obtained from molecular mechanics and dynamics calculations. Experimental cross sections were consistent with all of the known X-ray crystal structures (styrenyl, vinyl, and phenyl POSS species). The experimental cross sections also agreed with the calculated cross sections for each species. As a result of the compact nature of the POSS cages, each sample had only one stable conformation, and only one low-energy family of structures was found for each set of sample calculations. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemistry of Materials is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON paramagnetic resonance KW - ELECTRONS KW - SPECTRUM analysis KW - TETRAHYDROFURAN N1 - Accession Number: 33200358; Stanley E. Anderson 1 Dena J. Bodzin 1 Timothy S. Haddad 1 Jerry A. Boatz 1 Joseph M. Mabry 1 Connie Mitchell 1 Michael T. Bowers 1; Affiliation: 1: Department of Chemistry & Biochemistry, University of California, Santa Barbara,California 93106, Department of Chemistry, Westmont College, Santa Barbara, California 93108, ERC Inc., Air Force Research Laboratory, 10 East Saturn Boulevard, Building 8451, Edwards Air Force Base, California 93524-7680; Source Info: Jun2008, Vol. 20 Issue 13, p4299; Subject Term: ELECTRON paramagnetic resonance; Subject Term: ELECTRONS; Subject Term: SPECTRUM analysis; Subject Term: TETRAHYDROFURAN; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33200358&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hong Yan AU - Gaitonde, Datta T1 - Effect of Energy Pulse on 3-D Edney IV Interaction. JO - AIAA Journal JF - AIAA Journal Y1 - 2008/06// VL - 46 IS - 6 M3 - Article SP - 1424 EP - 1424 SN - 00011452 AB - This study investigates the effect of energy deposition on pressure and thermal loads generated by an Edney IV interaction. This complex supersonic jet impingement problem is formed by the intersection of an oblique shock generated by a 15-deg wedge with a Mach 3.45 bow shock in front of a 0.0254-m diam sphere. The full three-dimensional Reynolds-averaged Navier-Stokes equations are solved with the κ-ω turbulence model. Mesh-resolved simulations show that surface pressure without energy addition is in good agreement with experiments. The peak value is 1.8 times that observed without the impinging shock. Results from a grid resolution study confirm that the surface pressure is less sensitive than the heat flux. For flow control, a spherical energy pulse with a volume of 3 mm3 and energy of 283 mJ is deposited upstream of the primary triple point. The unsteady interaction of the energy spot and its induced blast wave with the oblique shock, the distorted bow shock, and the impinging supersonic jet is elucidated in the context of the "lensing" phenomenon. The simulations indicate significant impact of the energy deposition on the surface pressure and heat flux. The instantaneous surface pressure and heat flux rise when the blast wave and high-energy spot hit the surface and fall when the expansion waves reach the surface. However, the overall integrated stress and thermal loads are reduced, mainly due to the effect of the expansion waves. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JETS (Fluid dynamics) KW - TURBULENCE -- Mathematical models KW - NAVIER-Stokes equations KW - REYNOLDS number KW - SUPERSONIC aerodynamics KW - MACH number KW - FLUID dynamics -- Mathematical models KW - NETS (Mathematics) N1 - Accession Number: 33434343; Hong Yan 1 Gaitonde, Datta 2; Affiliation: 1: Research Professor, Department of Mechanical and Materials Engineering, 3640 Colonel Glenn Highway, Wright State University, Dayton, Ohio 45435. 2: Techinical Area Leader, Computational Sciences Branch, Aeronautical Sciences Division, Air Vehicles Directorate, U.S. Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433.; Source Info: Jun2008, Vol. 46 Issue 6, p1424; Subject Term: JETS (Fluid dynamics); Subject Term: TURBULENCE -- Mathematical models; Subject Term: NAVIER-Stokes equations; Subject Term: REYNOLDS number; Subject Term: SUPERSONIC aerodynamics; Subject Term: MACH number; Subject Term: FLUID dynamics -- Mathematical models; Subject Term: NETS (Mathematics); Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33434343&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eo, Soo-Mi AU - Oh, Se-Jin AU - Tan, Loon-Seng AU - Baek, Jong-Beom T1 - Poly(2,5-benzoxazole)/carbon nanotube composites via in situ polymerization of 3-amino-4-hydroxybenzoic acid hydrochloride in a mild poly(phosphoric acid) JO - European Polymer Journal JF - European Polymer Journal Y1 - 2008/06// VL - 44 IS - 6 M3 - Article SP - 1603 EP - 1612 SN - 00143057 AB - Abstract: Poly(2,5-benzoxzole) (ABPBO)/carbon nanotube (CNT) composites were prepared via in situ polycondensation of “protonated” AB monomer, 3-amino-4-hydroxybenzoic acid hydrochloride, in a mildly acidic poly(phosphoric acid) medium. In situ generated hydrochloric acid during the dehydrochlorination process provided additional acidity to the reaction medium. The enhanced acidity was advantageous for both the purification and dispersion of CNTs. Specifically, it was evident for the purification of as-received single-walled carbon nanotube (SWCNT), which was contained a large portion of impurity (60–70wt%). On the basis of the data obtained from elemental analysis (EA), thermogravimetric analysis (TGA), infrared spectroscopy (FT-IR), and X-ray diffraction (XRD) as well as scanning electron microscopy (SEM) and transmission electron microscopy (TEM), the resultant composites implicated that individual tube of multi-walled carbon nanotube (MWCNT) and bundles of SWCNT were homogeneously dispersed into the ABPBO matrix. After in situ polymerization in harsh temperature at 175°C and subsequent work-up processes, CNTs were remained structurally intact in a mild reaction medium. Thus, the PPA medium is indeed viable for the preparation of composite. [Copyright &y& Elsevier] AB - Copyright of European Polymer Journal is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - COMPOSITE materials KW - POLYCONDENSATION KW - HYDROCHLORIC acid KW - POLYMERIZATION KW - PHOSPHORIC acid KW - Composites KW - Multi-walled carbon nanotube KW - Poly(2,5-benzoxazole) KW - Single-walled carbon nanotube N1 - Accession Number: 32557607; Eo, Soo-Mi 1 Oh, Se-Jin 1 Tan, Loon-Seng 2 Baek, Jong-Beom 1; Email Address: jbbaek@chungbuk.ac.kr; Affiliation: 1: School of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 361-763, South Korea 2: Polymer Branch, Materials and Manufacturing Directorate, AFRL/MLBP, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433-7750, USA; Source Info: Jun2008, Vol. 44 Issue 6, p1603; Subject Term: CARBON nanotubes; Subject Term: COMPOSITE materials; Subject Term: POLYCONDENSATION; Subject Term: HYDROCHLORIC acid; Subject Term: POLYMERIZATION; Subject Term: PHOSPHORIC acid; Author-Supplied Keyword: Composites; Author-Supplied Keyword: Multi-walled carbon nanotube; Author-Supplied Keyword: Poly(2,5-benzoxazole); Author-Supplied Keyword: Single-walled carbon nanotube; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325312 Phosphatic Fertilizer Manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.eurpolymj.2008.03.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32557607&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Gresham, Ross T1 - Larkin's Born Yesterday. JO - Explicator JF - Explicator Y1 - 2008///Summer2008 VL - 66 IS - 4 M3 - Poetry Review SP - 210 EP - 214 SN - 00144940 AB - The article offers poetry criticism of the poem "Born Yesterday," by Philip Larkin. It focuses on the purpose of the poem in memorializing the birth of a baby, the poem's use of formalism, and the ending of the poem in a rhyming couplet. The themes of the poem are also discussed, including maturity, happiness, and wishes on behalf of another person. KW - POETRY (Literary form) -- History & criticism KW - INFANTS in literature KW - COUPLETS KW - FORMALISM (Literature) KW - BIRTHDAYS in literature KW - "Born Yesterday" KW - dramatic monologue KW - formal poetry KW - Philip Larkin KW - LARKIN, Philip, 1922-1985 KW - BORN Yesterday (Poem : Larkin) N1 - Accession Number: 34871140; Gresham, Ross 1; Affiliation: 1: United States Air Force Academy; Source Info: Summer2008, Vol. 66 Issue 4, p210; Subject Term: POETRY (Literary form) -- History & criticism; Subject Term: INFANTS in literature; Subject Term: COUPLETS; Subject Term: FORMALISM (Literature); Subject Term: BIRTHDAYS in literature; Author-Supplied Keyword: "Born Yesterday"; Author-Supplied Keyword: dramatic monologue; Author-Supplied Keyword: formal poetry; Author-Supplied Keyword: Philip Larkin; Reviews & Products: BORN Yesterday (Poem : Larkin); People: LARKIN, Philip, 1922-1985; Number of Pages: 5p; Document Type: Poetry Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34871140&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shiffler, Don AU - Haworth, Michael AU - Cartwright, Keith AU - Umstattd, Ryan AU - Ruebush, Mitch AU - Heidger, Susan AU - LaCour, Matthew AU - Golby, Ken AU - Sullivan, Don AU - Duselis, Peter AU - Luginsland, John T1 - Review of Cold Cathode Research at the Air Force Research Laboratory. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2008/06//Jun2008 Part 1 of 2 VL - 36 IS - 3 M3 - Article SP - 718 EP - 728 SN - 00933813 AB - Over the last decade, the Air Force Research Laboratory, Directed Energy Directorate (AFRL/DE) has engaged in a high current density field emission cathode research program. This program explored the aspects of cathode materials as well as the details of cathode geometries and emission physics. This paper summarizes the results this ongoing research effort to date. We review the history and motivation for the program, which provide insight into the physics issues of concern for various vacuum electronic sources. One important aspect of the program consists of the investigation of new cathode materials. For many high power microwave (HPM) sources, neutral out-gassing, which ties critically with cathode materials, plays a key role in the effective operation of the source. These material properties influence plasma formation, which in turn dictates the operation of an HPM device. For a cathode material, AFRL chose to focus on cesium-iodide-coated carbon fiber cathodes, which we discuss in detail here. A second important aspect of the program consists of understanding emission physics and the optimum geometries for a cathode. This aspect couples closely with electron beam quality, which in turns effects the electron beam interaction with microwaves in the HPM structure. This paper concludes with a discussion of the implementation of the cathode material on both a Magnetically Insulated transmission Line Oscillator and a relativistic magnetron. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIELD emission cathodes KW - PHYSICS KW - MICROWAVES KW - PLASMA (Ionized gases) KW - CARBON fibers KW - ELECTRON beams KW - Cold cathodes KW - field emission cathodes KW - high power microwaves (HPMs) N1 - Accession Number: 32900457; Shiffler, Don 1; Email Address: don.shiffler@kirtland.af.mil Haworth, Michael 1 Cartwright, Keith 1 Umstattd, Ryan 2 Ruebush, Mitch 3 Heidger, Susan 1 LaCour, Matthew 4 Golby, Ken 4 Sullivan, Don 5 Duselis, Peter 5 Luginsland, John 6; Affiliation: 1: Air Force Research Laboratory, AFRL/DEHP, Kirtland AFB, NM 87117 USA 2: Oak Ridge National Laboratory, Oak Ridge, TN 37831 USA 3: National Laboratory, Albuquerque, NM 87185 USA 4: SAIC, Inc., Albuquerque, NM 87106 USA 5: Ktech Corporation, Albuquerque, NM 87123 USA 6: NUMEREX Corporation, Albuquerque, NM 87106 USA; Source Info: Jun2008 Part 1 of 2, Vol. 36 Issue 3, p718; Subject Term: FIELD emission cathodes; Subject Term: PHYSICS; Subject Term: MICROWAVES; Subject Term: PLASMA (Ionized gases); Subject Term: CARBON fibers; Subject Term: ELECTRON beams; Author-Supplied Keyword: Cold cathodes; Author-Supplied Keyword: field emission cathodes; Author-Supplied Keyword: high power microwaves (HPMs); NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 11p; Illustrations: 15 Graphs; Document Type: Article L3 - 10.1109/TPS.2008.926227 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32900457&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gittins, Christopher AU - Konno, Daisei AU - Hoke, Michael AU - Ratkowski, Anthony T1 - SOME EFFECTS OF IMAGE SEGMENTATION ON SUBSPACE-BASED AND COVARIANCE-BASED DETECTION OF ANOMALOUS SUB-PIXEL MATERIALS. JO - International Journal of High Speed Electronics & Systems JF - International Journal of High Speed Electronics & Systems Y1 - 2008/06// VL - 18 IS - 2 M3 - Article SP - 349 EP - 367 PB - World Scientific Publishing Company SN - 01291564 AB - In this paper we assess the effect that clustering pixels into spectrally-similar background types, for example, soil, vegetation, and water in hyperspectral visible/near-IR/SWIR imagery, prior to applying a detection methodology has on material detection statistics. Specifically, we examine the effects of data segmentation on two statistically-based detection metrics, the Subspace Generalized Likelihood Ratio Test (Subspace GLRT) and the Adaptive Cosine Estimator (ACE), applied to a publicly-available AVIRIS datacube augmented with a synthetic material spectrum in selected pixels. The use of synthetic spectrum-augmented data enables quantitative comparison of Subspace-GLRT and ACE using Receiver Operating Characteristic (ROC) curves. For all cases investigated, Receiver Operating Characteristic (ROC) curves generated using ACE were as good as or superior to those generated using Subspace-GLRT. The favorability of ACE over Subspace-GLRT was more pronounced as the synthetic spectrum mixing fraction decreased. For probabilities of detection in the range of 50-80%, segmentation reduced the probability of false alarm by a factor of 3–5 when using ACE. In contrast, segmentation had no apparent effect on detection statistics using Subspace-GLRT, in this example. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of High Speed Electronics & Systems is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANOMALY detection (Computer security) KW - PIXELS KW - AIRBORNE Visible/Infrared Imaging Spectrometer (AVIRIS) KW - EQUIPMENT & supplies KW - UNITED States. Air Force KW - UNITED States KW - anomaly detection KW - Generalized Likelihood Ratio KW - hyperspectral KW - image segmentation KW - sub-pixel N1 - Accession Number: 37700490; Gittins, Christopher 1; Email Address: gittins@psicorp.com Konno, Daisei 1 Hoke, Michael 2 Ratkowski, Anthony 2; Affiliation: 1: Physical Sciences Inc., 20 New England Business Center, Andover, MA 01810 USA 2: US Air Force Research Laboratory, AFRL/VSBYH, 29 Randolph Road, Hanscom AFB, MA 01731 USA; Source Info: Jun2008, Vol. 18 Issue 2, p349; Subject Term: ANOMALY detection (Computer security); Subject Term: PIXELS; Subject Term: AIRBORNE Visible/Infrared Imaging Spectrometer (AVIRIS); Subject Term: EQUIPMENT & supplies; Subject Term: UNITED States. Air Force; Subject Term: UNITED States; Author-Supplied Keyword: anomaly detection; Author-Supplied Keyword: Generalized Likelihood Ratio; Author-Supplied Keyword: hyperspectral; Author-Supplied Keyword: image segmentation; Author-Supplied Keyword: sub-pixel; NAICS/Industry Codes: 928110 National Security; Number of Pages: 19p; Illustrations: 4 Black and White Photographs, 1 Diagram, 11 Graphs, 1 Map; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37700490&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cooley, Thomas W. AU - Lockwood, Ronald B. AU - Davis, Thom M. AU - Nadile, Richard M. AU - Gardner, James A. AU - Armstrong, Peter S. AU - Payton, Abraham M. AU - Straight, Stanley D. AU - Henry, Wayne C. AU - Chrien, Thomas G. AU - Gussin, Edward L. AU - Makowski, David T1 - ADVANCED RESPONSIVE TACTICALLY-EFFECTIVE MILITARY IMAGING SPECTROMETER (ARTEMIS) DESIGN. JO - International Journal of High Speed Electronics & Systems JF - International Journal of High Speed Electronics & Systems Y1 - 2008/06// VL - 18 IS - 2 M3 - Article SP - 369 EP - 374 PB - World Scientific Publishing Company SN - 01291564 AB - The Advanced Responsive Tactically-Effective Military Imaging Spectrometer (ARTEMIS) is under development for tactical military applications and is the primary payload for the TacSat-3 satellite. The optical design for the telescope, imaging spectrometer, and high resolution imager is described. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of High Speed Electronics & Systems is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH resolution spectroscopy KW - FOCAL planes KW - SPECTROMETERS -- Design & construction KW - PAYLOADS (Aerospace engineering) KW - SPACE vehicles -- Design & construction KW - DESIGN & construction N1 - Accession Number: 37700489; Cooley, Thomas W. 1,2; Email Address: Thomas.Cooley@kirtland.af.mil Lockwood, Ronald B. 1,2 Davis, Thom M. 1,2 Nadile, Richard M. 1,2 Gardner, James A. 1,2 Armstrong, Peter S. 1,2 Payton, Abraham M. 1,2 Straight, Stanley D. 1,2 Henry, Wayne C. 1,2 Chrien, Thomas G. 3; Email Address: Tchrien@raytheon.com Gussin, Edward L. 3 Makowski, David 3; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, 29 Randolph Road, Hanscom Air Force Base, Massachusetts 01731, USA 2: 3550 Aberdeen Avenue, Kirtland Air Force Base, New Mexico 87117, United States of America 3: Raytheon Space and Airborne Systems, 2000 East El Segundo Boulevard, El Segundo, California 90245, United States of America; Source Info: Jun2008, Vol. 18 Issue 2, p369; Subject Term: HIGH resolution spectroscopy; Subject Term: FOCAL planes; Subject Term: SPECTROMETERS -- Design & construction; Subject Term: PAYLOADS (Aerospace engineering); Subject Term: SPACE vehicles -- Design & construction; Subject Term: DESIGN & construction; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 6p; Illustrations: 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37700489&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ding, Jianwu AU - Odom, Bruce W. AU - Geiger, Allen R. AU - Richmond, Richard D. T1 - A COMPACT EYE-SAFE OPO PUMPED BY A Nd:YAG MICROCHIP MOPA. JO - International Journal of High Speed Electronics & Systems JF - International Journal of High Speed Electronics & Systems Y1 - 2008/06// VL - 18 IS - 2 M3 - Article SP - 483 EP - 492 PB - World Scientific Publishing Company SN - 01291564 AB - A compact high peak power eye-safer optical parametric oscillator was constructed by pumping it with a master oscillator power amplifier consisting of a large-mode-area ytterbium doped fiber amplifier and a diode-pumped, passively Q-switched Nd:YAG microchip laser. The master oscillator power amplifier has the maximum output pulse energy of 570 μJ with a 3 nanosecond pulse width and a 3 kHz pulse repetition rate. The compact singly resonating optical parametric oscillator utilized a 50 mm periodically poled Lithium Niobate crystal and generated high peak power 1.5 μm eye-safe laser pulses with more than 140 μJ pulse energy, 3 nanosecond pulse width and 3 kHz repetition rate. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of High Speed Electronics & Systems is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS -- Design & construction KW - OPTICAL parametric oscillators KW - POWER amplifiers KW - ELECTRONIC amplifiers -- Design & construction KW - YTTERBIUM KW - DESIGN & construction KW - Eye-safer laser KW - Microchip laser KW - MOPA KW - OPO KW - Yb fiber amplifier N1 - Accession Number: 37700479; Ding, Jianwu 1; Email Address: jimding@akamaiphysicsinc.com Odom, Bruce W. 1 Geiger, Allen R. 1 Richmond, Richard D. 2; Affiliation: 1: Akamai Physics, Inc., Las Cruces, NM 88005, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7700, USA; Source Info: Jun2008, Vol. 18 Issue 2, p483; Subject Term: LASERS -- Design & construction; Subject Term: OPTICAL parametric oscillators; Subject Term: POWER amplifiers; Subject Term: ELECTRONIC amplifiers -- Design & construction; Subject Term: YTTERBIUM; Subject Term: DESIGN & construction; Author-Supplied Keyword: Eye-safer laser; Author-Supplied Keyword: Microchip laser; Author-Supplied Keyword: MOPA; Author-Supplied Keyword: OPO; Author-Supplied Keyword: Yb fiber amplifier; Number of Pages: 10p; Illustrations: 2 Diagrams, 1 Chart, 5 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37700479&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, X. AU - Pan, E. AU - Albrecht, J. D. T1 - Exact closed-form electromagnetic Green’s functions for graded uniaxial multiferroic materials. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/06// VL - 103 IS - 11 M3 - Article SP - 113511 PB - American Institute of Physics SN - 00218979 AB - Functionally graded multiferroic composites are being investingated in order to tailor the electromagnetic properties of synthetic surfaces and material interfaces. Theoretical representations of multiferroic materials simultaneously account for magnetization and ferroelectric polarization in a strongly coupled system. In this paper, exact closed-form electromagnetic Green’s functions due to electric and magnetic point sources are derived for the general class of uniaxial multiferroics with functionally graded compositions where the material property varies exponentially in an arbitrary direction. After the introduction of two new functions, the set of coupled governing partial differential equations is separated into two independent inhomogeneous partial differential equations. These resultant equations are further cast in Helmholtz form so that solutions can be derived expediently. We observed that the derived Green’s functions in the graded case possess symmetric properties in their indices, but not in their spatial variables. Numerical results show that the amplitudes of the field response along the direction of the compositional gradient can be either matched to a uniform material or systematically reduced, as necessary. Finally, Green’s functions are applied to study the electric dipole-induced electric and magnetic potentials in the functionally graded multiferroics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FERROMAGNETISM KW - PARTIAL differential equations KW - CALCULUS KW - COUPLED mode theory (Wave-motion) KW - VIBRATION (Mechanics) KW - FERROMAGNETIC materials KW - MAGNETISM N1 - Accession Number: 32635114; Wang, X. 1 Pan, E. 1 Albrecht, J. D. 2; Affiliation: 1: Department of Civil Engineering and Department of Applied Mathematics, University of Akron, Akron, Ohio 44325-3905, 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: Jun2008, Vol. 103 Issue 11, p113511; Subject Term: FERROMAGNETISM; Subject Term: PARTIAL differential equations; Subject Term: CALCULUS; Subject Term: COUPLED mode theory (Wave-motion); Subject Term: VIBRATION (Mechanics); Subject Term: FERROMAGNETIC materials; Subject Term: MAGNETISM; Number of Pages: 10p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.2939263 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32635114&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McNamara, Leo F. AU - Retterer, John M. AU - Abdu, M.A. AU - Batista, Inez S. AU - Reinisch, Bodo W. T1 - F2 Peak parameters, drifts and spread F derived from digisonde ionograms for the COPEX campaign in Brazil JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2008/06// VL - 70 IS - 8/9 M3 - Article SP - 1144 EP - 1158 SN - 13646826 AB - Abstract: Digisonde ionograms recorded in Brazil during the COPEX campaign of 2002 have been analyzed to determine the diurnal variations of the F2 peak parameters (foF2, hmF2 and the Chapman scale height, Hm) for the three COPEX stations, Boa Vista, Cachimbo and Campo Grande. Values of foF2 were derived at 15-min intervals for UT days 278–298. The autoscaled F2 traces for all ionograms recorded on several days were modified manually as required and then used to derive the F2 peak parameters. The Cachimbo ionograms have also been analyzed to determine the post-sunset vertical drifts and the occurrence of spread F echoes at the magnetic equator. Spread F occurred on ∼90% of the nights at all three sites, limiting the number of ionograms that provide well-defined peak parameters during these conditions. The ionograms provide a wealth of details not previously reported for equatorial locations, and not predicted by current models of the equatorial ionosphere. In this paper, we discuss the correlation between the observed vertical drifts and the occurrence of spread F echoes, describe the short-term variability of the three peak parameters, and provide brief interpretations of this variability in terms of the processes that control plasma production and transport. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOGRAMS KW - IONOSPHERE KW - PLASMA devices KW - BRAZIL KW - Instruments and techniques) KW - Ionosphere (equatorial ionosphere KW - Ionospheric irregularities N1 - Accession Number: 32558479; McNamara, Leo F. 1; Email Address: leo.mcnamara@hanscom.af.mil Retterer, John M. 2 Abdu, M.A. 3 Batista, Inez S. 3 Reinisch, Bodo W. 4; Affiliation: 1: Institute for Scientific Research, Boston College, Chestnut Hill, MA, USA 2: Air Force Research Laboratory, Research Vehicles Directorate, Hanscom Air Force Base, Massachusetts, USA 3: Instituto Nacional de Pesquisas Espaciais, Ave dos Astronautas, 1758, C.P. 515, 12202-970 Sao Jose dos Campos, SP, Brazil 4: Center for Atmospheric Research, University of Massachusetts Lowell, Lowell, MA, USA; Source Info: Jun2008, Vol. 70 Issue 8/9, p1144; Subject Term: IONOGRAMS; Subject Term: IONOSPHERE; Subject Term: PLASMA devices; Subject Term: BRAZIL; Author-Supplied Keyword: Instruments and techniques); Author-Supplied Keyword: Ionosphere (equatorial ionosphere; Author-Supplied Keyword: Ionospheric irregularities; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.jastp.2008.02.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32558479&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anthony J. Macula AU - Alexander Schliep AU - Morgan A. Bishop AU - Thomas E. Renz T1 - New, Improved, and Practical k-Stem Sequence Similarity Measures for Probe Design. JO - Journal of Computational Biology JF - Journal of Computational Biology Y1 - 2008/06// VL - 15 IS - 5 M3 - Article SP - 525 EP - 534 SN - 10665277 AB - We define new measures of sequence similarity for oligonucleotide probe design. These new measures incorporate the nearest neighbor k-stem motifs in their definition, but can be efficiently computed by means of a bit-vector method. They are not as computationally costly as algorithms that predict nearest neighbor hybridization potential. Our new measures for sequence similarity correlate significantly better with nearest neighbor thermodynamic predictions than either BLAST or the standard edit or insertion-deletion defined similarities already in use in many different probe design applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Computational Biology is the property of Mary Ann Liebert, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OLIGONUCLEOTIDES KW - DNA probes KW - NUCLEIC acid probes KW - GENETIC algorithms N1 - Accession Number: 33053430; Anthony J. Macula 1 Alexander Schliep 2 Morgan A. Bishop 1 Thomas E. Renz 3; Affiliation: 1: Biomathematics Group, SUNY Geneseo, Geneseo, New York. 2: Department of Computational Molecular Biology, Max Planck Institute for Molecular Genetics, Berlin, Germany. 3: IFTC, Rome Research Site, Air Force Research Laboratory, Rome, New York.; Source Info: Jun2008, Vol. 15 Issue 5, p525; Subject Term: OLIGONUCLEOTIDES; Subject Term: DNA probes; Subject Term: NUCLEIC acid probes; Subject Term: GENETIC algorithms; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33053430&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patton, Steven T. AU - Voevodin, Andrey A. AU - Vaia, Richard A. AU - Pender, Mark AU - Diamanti, Steve J. AU - Phillips, Ben T1 - Nanoparticle Liquids for Surface Modification and Lubrication of MEMS Switch Contacts. JO - Journal of Microelectromechanical Systems JF - Journal of Microelectromechanical Systems Y1 - 2008/06// VL - 17 IS - 3 M3 - Article SP - 741 EP - 746 SN - 10577157 AB - Contact failures in microelectromechanical system (MEMS) switches, particularly during hot switching, prevent their widespread use. In this paper, a nanoparticle liquid (NPL) lubricant is synthesized and deposited on MEMS switch contacts as a nanotechnology-based lubricant. NPLs are monolithic hybrid materials comprised of an inorganic nanosized metallic core and an organic low viscosity corona. The NPL used here utilizes either Au or Pt nanoparticles as the core and a mercaptoethanesulfonate ionic liquid as the corona. Performance, reliability, and chemical/physical processes on hot-switched NPL-lubricated contact surfaces were investigated at high (1 mA) and low (10 µA) currents using a micro/nanoadhesion apparatus as a MEMS switch simulator with in situ monitoring of contact resistance and adhesion force. This was coupled with ex-situ analyses of the contacts using scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and scanning Auger spectroscopy. NPLs exhibited improved electrical performance and durability (orders of magnitude improvement) as compared to uncoated and self-assembled monolayer-coated switch contacts. Improved performance and reliability results from the following: 1) controlled nanoscale surface roughness that spreads current through multiple nanocontacts; 2) restricted size melting regions and termination of nanowire growth (prevents shorting) during contact opening; 3) enhanced thermal and electrical conductivity that reduces lubricant degradation; and 4) lubricant self-healing (flow to damaged areas) as confirmed with physical and chemical analyses. Based on these results, NPLs show excellent potential as surface modifiers/lubricants for MEMS switch contacts. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microelectromechanical Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - LIQUIDS KW - SURFACE chemistry KW - LUBRICATION & lubricants KW - MICROELECTROMECHANICAL systems KW - VISCOSITY KW - Lubrication KW - microelectromechanical system (MEMS) switches KW - nanoparticle liquids (NPLs) KW - reliability N1 - Accession Number: 32923999; Patton, Steven T. 1; Email Address: steve.patton@wpafb.af.mil Voevodin, Andrey A. 2 Vaia, Richard A. 2 Pender, Mark 2 Diamanti, Steve J. 3 Phillips, Ben 1; Affiliation: 1: University of Dayton Research Institute, Dayton, OH, 45469 USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433 USA 3: Core Science Team, Huntsman International, 3078 Everberg, Belgium; Source Info: Jun2008, Vol. 17 Issue 3, p741; Subject Term: NANOPARTICLES; Subject Term: LIQUIDS; Subject Term: SURFACE chemistry; Subject Term: LUBRICATION & lubricants; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: VISCOSITY; Author-Supplied Keyword: Lubrication; Author-Supplied Keyword: microelectromechanical system (MEMS) switches; Author-Supplied Keyword: nanoparticle liquids (NPLs); Author-Supplied Keyword: reliability; NAICS/Industry Codes: 324191 Petroleum Lubricating Oil and Grease Manufacturing; Number of Pages: 6p; Illustrations: 6 Diagrams, 1 Graph; Document Type: Article L3 - 10.1109/JMEMS.2008.924249 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32923999&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mahalingam, K. AU - Eyink, K. G. AU - Brown, G. J. AU - Dorsey, D. L. AU - Kisielowski, C. F. AU - Thust, A. T1 - Compositional analysis of mixed–cation-anion III–V semiconductor interfaces using phase retrieval high-resolution transmission electron microscopy. JO - Journal of Microscopy JF - Journal of Microscopy Y1 - 2008/06// VL - 230 IS - 3 M3 - Article SP - 372 EP - 381 PB - Wiley-Blackwell SN - 00222720 AB - Employing exit-plane wave function (EPWF) reconstruction in high-resolution transmission electron microscopy (HRTEM), we have developed an approach to atomic scale compositional analysis of III-V semiconductor interfaces, especially suitable for analyzing quaternary heterostructures with intermixing in both cation and anion sub-lattices. Specifically, we use the focal-series reconstruction technique, which retrieves the complex-valued EPWF from a thru-focus series of HRTEM images. A study of interfaces in Al0.4Ga0.6As–GaAs and In0.25Ga0.75Sb–InAs heterostructures using focal-series reconstruction shows that change in chemical composition along individual atomic columns across an interface is discernible in the phase image of the reconstructed EPWF. To extract the interface composition profiles along the cation and anion sub-lattices, quantitative analysis of the phase image is performed using factorial analysis of correspondence. This enabled independent quantification of changes in the In–Ga and As–Sb contents across ultra-thin interfacial regions (approximately 0.6 nm wide) with true atomic resolution, in the In0.25Ga0.75Sb–InAs heterostructure. The validity of the method is demonstrated by analyzing simulated HRTEM images of an InAs–GaSb–InAs model structure with abrupt and graded interfaces. Our approach is general, permitting atomic-level compositional analysis of heterostructures with two species per sub-lattice, hitherto unfeasible with existing HRTEM methods. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microscopy is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSMISSION electron microscopy KW - CATIONS KW - HETEROSTRUCTURES KW - SUPERLATTICES KW - CRYSTALS KW - Exit-plane wave function KW - focal series reconstruction KW - high-rersolution transmission electron microscopy KW - III-V semiconductor interfaces KW - multivariate statistical analysis N1 - Accession Number: 32150564; Mahalingam, K. 1; Email Address: krishnamurthy.mahalingam@wpafb.af.mil Eyink, K. G. 1 Brown, G. J. 1 Dorsey, D. L. 1 Kisielowski, C. F. 2 Thust, A. 3; Affiliation: 1: Air Force Research Laboratory,Materials & Manufacturing Directorate,Wright-Patterson AFB, OH 45433-7707, U.S.A. 2: National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A. 3: Institute of Solid State Research and Ernst Ruska-Center for Microscopy and Spectroscopy with Electrons (ER-C), Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany.; Source Info: Jun2008, Vol. 230 Issue 3, p372; Subject Term: TRANSMISSION electron microscopy; Subject Term: CATIONS; Subject Term: HETEROSTRUCTURES; Subject Term: SUPERLATTICES; Subject Term: CRYSTALS; Author-Supplied Keyword: Exit-plane wave function; Author-Supplied Keyword: focal series reconstruction; Author-Supplied Keyword: high-rersolution transmission electron microscopy; Author-Supplied Keyword: III-V semiconductor interfaces; Author-Supplied Keyword: multivariate statistical analysis; Number of Pages: 10p; Illustrations: 1 Color Photograph, 1 Black and White Photograph, 1 Diagram, 7 Graphs; Document Type: Article L3 - 10.1111/j.1365-2818.2008.01995.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32150564&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hardie, Russell C. AU - Rogers, Steven K. AU - Wilson, Terry AU - Rogers, Adam T1 - Performance analysis of a new computer aided detection system for identifying lung nodules on chest radiographs JO - Medical Image Analysis JF - Medical Image Analysis Y1 - 2008/06// VL - 12 IS - 3 M3 - Article SP - 240 EP - 258 SN - 13618415 AB - Abstract: A new computer aided detection (CAD) system is presented for the detection of pulmonary nodules on chest radiographs. Here, we present the details of the proposed algorithm and provide a performance analysis using a publicly available database to serve as a benchmark for future research efforts. All aspects of algorithm training were done using an independent dataset containing 167 chest radiographs with a total of 181 lung nodules. The publicly available test set was created by the Standard Digital Image Database Project Team of the Scientific Committee of the Japanese Society of Radiological Technology (JRST). The JRST dataset used here is comprised of 154 chest radiographs containing one radiologist confirmed nodule each (100 malignant cases, 54 benign cases). The CAD system uses an active shape model for anatomical segmentation. This is followed by a new weighted-multiscale convergence-index nodule candidate detector. A novel candidate segmentation algorithm is proposed that uses an adaptive distance-based threshold. A set of 114 features is computed for each candidate. A Fisher linear discriminant (FLD) classifier is used on a subset of 46 features to produce the final detections. Our results indicate that the system is able to detect 78.1% of the nodules in the JRST test set with and average of 4.0 false positives per image (excluding 14 cases containing lung nodules in retrocardiac and subdiaphragmatic regions of the lung). [Copyright &y& Elsevier] AB - Copyright of Medical Image Analysis is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER-aided design KW - RADIOGRAPHY KW - NODULAR disease KW - LUNG diseases KW - Chest radiographs KW - Computer aided detection KW - Computer aided diagnosis KW - Lung nodules N1 - Accession Number: 32174964; Hardie, Russell C. 1,2; Email Address: rhardie@udayton.edu Rogers, Steven K. 2,3 Wilson, Terry 2,3 Rogers, Adam 2; Affiliation: 1: Department of Electrical and Computer Engineering, University of Dayton, 300 College Park, Dayton, OH 45469-0232, United States 2: Quale, LLC, 4017, Emerald Ct. S, Beavercreek, OH 45430, United States 3: Air Force Research Laboratory, AFRL/SN Wright Patterson AFB, OH 45433, United States; Source Info: Jun2008, Vol. 12 Issue 3, p240; Subject Term: COMPUTER-aided design; Subject Term: RADIOGRAPHY; Subject Term: NODULAR disease; Subject Term: LUNG diseases; Author-Supplied Keyword: Chest radiographs; Author-Supplied Keyword: Computer aided detection; Author-Supplied Keyword: Computer aided diagnosis; Author-Supplied Keyword: Lung nodules; NAICS/Industry Codes: 541512 Computer Systems Design Services; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.media.2007.10.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32174964&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Renneke, R. M. AU - Intrator, T. P. AU - Hsu, S. C. AU - Wurden, G. A. AU - Waganaar, W. J. AU - Ruden, E. L. AU - Grabowski, T. C. T1 - Power balance in a high-density field reversed configuration plasma. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2008/06// VL - 15 IS - 6 M3 - Article SP - 062502 PB - American Institute of Physics SN - 1070664X AB - A global power balance analysis has been performed for the Field Reversed Experiment with Liner high density (>5×1022 m-3) field reversed configuration (FRC) plasma. The analysis was based on a zero-dimensional power balance model [D. J. Rey and M. Tuszewski, Phys. Fluids 27, 1514 (1984)]. The key findings are as follows. First, the percentage of radiative losses relative to total loss is an order of magnitude lower than previous lower density FRC experiments. Second, Ohmic heating was found to correlate with the poloidal flux trapping at FRC formation, suggesting that poloidal flux dissipation is primarily responsible for plasma heating. Third, high density FRCs analyzed in this work reinforce the low-density adiabatic scaling, which shows that particle confinement time and flux confinement time are approximately equal. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA (Ionized gases) KW - ELECTRON configuration KW - RADIATIVE transfer KW - OHMIC contacts KW - PLASMA heating N1 - Accession Number: 32970367; Renneke, R. M. 1; Email Address: renneke@lanl.gov Intrator, T. P. 1 Hsu, S. C. 1 Wurden, G. A. 1 Waganaar, W. J. 1 Ruden, E. L. 2 Grabowski, T. C. 2; Affiliation: 1: Los Alamos National Laboratory, M.S. E526, Los Alamos, New Mexico 87545, USA 2: Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, New Mexico 87117, USA; Source Info: Jun2008, Vol. 15 Issue 6, p062502; Subject Term: PLASMA (Ionized gases); Subject Term: ELECTRON configuration; Subject Term: RADIATIVE transfer; Subject Term: OHMIC contacts; Subject Term: PLASMA heating; Number of Pages: 8p; Illustrations: 3 Diagrams, 11 Graphs; Document Type: Article L3 - 10.1063/1.2934588 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32970367&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhao, Zhenli AU - Luo, Zhenlin AU - Liu, Chihui AU - Wu, Wenbin AU - Gao, Chen AU - Lu, Yalin T1 - Quantitative measurement of piezoelectric coefficient of thin film using a scanning evanescent microwave microscope. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2008/06// VL - 79 IS - 6 M3 - Article SP - 064704 PB - American Institute of Physics SN - 00346748 AB - This article describes a new approach to quantitatively measure the piezoelectric coefficients of thin films at the microscopic level using a scanning evanescent microwave microscope. This technique can resolve 10 pm deformation caused by the piezoelectric effect and has the advantages of high scanning speed, large scanning area, submicron spatial resolution, and a simultaneous accessibility to many other related properties. Results from the test measurements on the longitudinal piezoelectric coefficient of PZT thin film agree well with those from other techniques listed in literatures. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE coatings KW - THIN films KW - PIEZOELECTRICITY KW - OPTICAL instruments KW - SURFACES (Technology) N1 - Accession Number: 33021942; Zhao, Zhenli 1 Luo, Zhenlin 1 Liu, Chihui 1 Wu, Wenbin 1 Gao, Chen 1 Lu, Yalin 2; Affiliation: 1: National Synchrotron Radiation Laboratory and Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230029, 2: Laser Optics Research Center (LORC), Department of Physics, United States Air Force Academy, Colorado Springs, Colorado 80840,; Source Info: Jun2008, Vol. 79 Issue 6, p064704; Subject Term: SURFACE coatings; Subject Term: THIN films; Subject Term: PIEZOELECTRICITY; Subject Term: OPTICAL instruments; Subject Term: SURFACES (Technology); NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 446130 Optical Goods Stores; Number of Pages: 4p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.2940275 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33021942&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Artelli, Michael J. AU - Deckro, Richard F. T1 - Fourth generation operations: principles for the 'Long War'. JO - Small Wars & Insurgencies JF - Small Wars & Insurgencies Y1 - 2008/06// VL - 19 IS - 2 M3 - Article SP - 221 EP - 237 SN - 09592318 AB - Discusses fourth-generation warfare - combat methods that have undergone three previous eras of change in tactics, technology, and combatants - focusing on how fourth-generation operations are developing in Afghanistan and Iraq, especially since the beginning of the US "war on terror. [ABSTRACT FROM AUTHOR] AB - Copyright of Small Wars & Insurgencies is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FOURTH generation warfare KW - MILITARY policy KW - MILITARY art & science KW - COUNTERTERRORISM KW - WAR on Terrorism, 2001-2009 KW - MILITARY strategy KW - AFGHANISTAN KW - IRAN KW - UNITED States KW - fourth generation operations KW - fourth generation warfare KW - irregular warfare KW - principles of war KW - Military theory (fourth-generation warfare) N1 - Accession Number: 32746972; Artelli, Michael J. 1; Deckro, Richard F. 2; Affiliations: 1 : Headquarters Air Combat Command, Langley Air Force Base, USA; 2 : Air Force Institute of Technology, Wright Patterson Air Force Base, USA; Source Info: Jun2008, Vol. 19 Issue 2, p221; Historical Period: 1916 to 2006; Subject Term: FOURTH generation warfare; Subject Term: MILITARY policy; Subject Term: MILITARY art & science; Subject Term: COUNTERTERRORISM; Subject Term: WAR on Terrorism, 2001-2009; Subject Term: MILITARY strategy; Subject: AFGHANISTAN; Subject: IRAN; Subject: UNITED States; Author-Supplied Keyword: fourth generation operations; Author-Supplied Keyword: fourth generation warfare; Author-Supplied Keyword: irregular warfare; Author-Supplied Keyword: principles of war; Number of Pages: 17p; Illustrations: 5 Diagrams, 4 Charts; Document Type: Article L3 - 10.1080/09592310802061372 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hia&AN=32746972&site=ehost-live&scope=site DP - EBSCOhost DB - hia ER - TY - JOUR AU - Bohner, Gerd AU - Dykema-Engblade, Amanda AU - Tindale, R. Scott AU - Meisenhelder, Helen T1 - Framing of Majority and Minority Source Information in Persuasion. JO - Social Psychology (18649335) JF - Social Psychology (18649335) Y1 - 2008/06// VL - 39 IS - 2 M3 - Article SP - 108 EP - 116 SN - 18649335 AB - Information about source consensus may either create expectancies of message validity that bias subsequent processing, or may determine the amount of message processing. The authors propose that which of the two effects occurs depends on the framing of consensus information. Undergraduates (N = 242) read strong, ambiguous, or weak arguments on an issue; the source was framed as either knowledgeable or similar to participants; source consensus was either low (minority) or high (majority). Dependent variables were the favorability of cognitive responses and postmessage attitudes. As predicted, knowledge framing caused consensus-based assimilation for ambiguous arguments, and contrast for both strong and weak arguments, whereas similarity framing caused extensive processing of minority arguments, but uncritical acceptance of majority arguments. [ABSTRACT FROM AUTHOR] AB - Copyright of Social Psychology (18649335) is the property of Hogrefe Verlag GmbH & Co. KG and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Consensus (Social sciences) KW - Persuasion (Psychology) KW - Influence (Psychology) KW - Attitude (Psychology) KW - Psychology KW - consensus KW - conversion KW - framing KW - majority influence KW - minority influence KW - persuasion N1 - Accession Number: 33949340; Bohner, Gerd 1; Email Address: gerd.bohner@uni-bielefeld.de; Dykema-Engblade, Amanda 2; Tindale, R. Scott 3; Meisenhelder, Helen 4; Affiliations: 1: Universität Bielefeld, Germany; 2: Northeastern Illinois University, Chicago, IL, USA; 3: Loyola University Chicago, IL, USA; 4: United States Air Force, Washington, DC, USA; Issue Info: 2008, Vol. 39 Issue 2, p108; Thesaurus Term: Consensus (Social sciences); Thesaurus Term: Persuasion (Psychology); Thesaurus Term: Influence (Psychology); Thesaurus Term: Attitude (Psychology); Thesaurus Term: Psychology; Author-Supplied Keyword: consensus; Author-Supplied Keyword: conversion; Author-Supplied Keyword: framing; Author-Supplied Keyword: majority influence; Author-Supplied Keyword: minority influence; Author-Supplied Keyword: persuasion; Number of Pages: 9p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1027/1864-9335.39.2.108 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=33949340&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Nguyen, Kiet A. AU - Day, Paul N. AU - Pachter, Ruth T1 - Effects of conjugation in length and dimension on two-photon properties of fluorene-based chromophores. JO - Theoretical Chemistry Accounts: Theory, Computation, & Modeling JF - Theoretical Chemistry Accounts: Theory, Computation, & Modeling Y1 - 2008/06// VL - 120 IS - 1-3 M3 - Article SP - 167 EP - 175 PB - Springer Science & Business Media B.V. SN - 1432881X AB - We report calculated two-photon (TPA) absorption spectra based upon results obtained from quadratic response time-dependent density functional theory for fluorene-based donor-π-acceptor molecules. Coulomb attenuated functionals with a long-range exchange contribution are applied to predict TPA excitation energies and cross-sections. Observed spectra are explained, and the effects of conjugation and multibranching on the TPA spectra are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Theoretical Chemistry Accounts: Theory, Computation, & Modeling is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOCONJUGATES KW - PHYSICAL & theoretical chemistry KW - PHOTONS KW - FLUORENE KW - METHANE KW - Cross-section KW - Diphenylaminofluorene KW - Excitation energies KW - Excited-state KW - Stilbene KW - Two-photon N1 - Accession Number: 31811634; Nguyen, Kiet A. 1,2; Email Address: Kiet.Nguyen@WPAFB.AF.MIL Day, Paul N. 1,3 Pachter, Ruth 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA. 2: UES, Inc, Dayton, USA. 3: Anteon Corporation, Fairfax, USA.; Source Info: Jun2008, Vol. 120 Issue 1-3, p167; Subject Term: BIOCONJUGATES; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: PHOTONS; Subject Term: FLUORENE; Subject Term: METHANE; Author-Supplied Keyword: Cross-section; Author-Supplied Keyword: Diphenylaminofluorene; Author-Supplied Keyword: Excitation energies; Author-Supplied Keyword: Excited-state; Author-Supplied Keyword: Stilbene; Author-Supplied Keyword: Two-photon; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 9p; Illustrations: 2 Diagrams, 3 Charts, 2 Graphs; Document Type: Article L3 - 10.1007/s00214-007-0293-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31811634&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Langhoff, P. W. AU - Hinde, R. J. AU - Mills, J. D. AU - Boatz, J. A. T1 - Spectral-product methods for electronic structure calculations. JO - Theoretical Chemistry Accounts: Theory, Computation, & Modeling JF - Theoretical Chemistry Accounts: Theory, Computation, & Modeling Y1 - 2008/06// VL - 120 IS - 1-3 M3 - Article SP - 199 EP - 213 PB - Springer Science & Business Media B.V. SN - 1432881X AB - Progress is reported in development, implementation, and application of a spectral method for ab initio studies of the electronic structure of matter. In this approach, antisymmetry restrictions are enforced subsequent to construction of the many-electron Hamiltonian matrix in a complete orthonormal spectral-product basis. Transformation to a permutation-symmetry representation obtained from the eigenstates of the aggregate electron antisymmetrizer is seen to enforce the requirements of the Pauli principle ex post facto, and to eliminate the unphysical (non-Pauli) states spanned by the product representation. Results identical with conventional use of prior antisymmetrization of configurational state functions are obtained in applications to many-electron atoms. The development provides certain advantages over conventional methods for polyatomic molecules, and, in particular, facilitates incorporation of fragment information in the form of Hermitian matrix representatives of atomic and diatomic operators which include the non-local effects of overall electron antisymmetry. An exact atomic-pair expression is obtained in this way for polyatomic Hamiltonian matrices which avoids the ambiguities of previously described semi-empirical fragment-based methods for electronic structure calculations. Illustrative applications to the well-known low-lying doublet states of the H3 molecule in a minimal-basis-set demonstrate that the eigensurfaces of the antisymmetrizer can anticipate the structures of the more familiar energy surfaces, including the seams of intersection common in high-symmetry molecular geometries. The calculated H3 energy surfaces are found to be in good agreement with corresponding valence-bond results which include all three-center terms, and are in general accord with accurate values obtained employing conventional high-level computational-chemistry procedures. By avoiding the repeated evaluations of the many-centered one- and two-electron integrals required in construction of polyatomic Hamiltonian matrices in the antisymmetric basis states commonly employed in conventional calculations, and by performing the required atomic and atomic-pair calculations once and for all, the spectral-product approach may provide an alternative potentially efficient ab initio formalism suitable for computational studies of adiabatic potential energy surfaces more generally. [ABSTRACT FROM AUTHOR] AB - Copyright of Theoretical Chemistry Accounts: Theory, Computation, & Modeling is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC structure KW - ATOMIC structure KW - ENERGY-band theory of solids KW - PARTICLES (Nuclear physics) KW - PHYSICAL & theoretical chemistry KW - Ab initio calculations KW - Antisymmetry constraints KW - Electronic states KW - Potential energy surfaces KW - Spectral methods N1 - Accession Number: 31811625; Langhoff, P. W. 1; Email Address: langhoff@drifter.sdsc.edu Hinde, R. J. 2 Mills, J. D. 3 Boatz, J. A. 3; Affiliation: 1: San Diego Supercomputer Center, University of California San Diego, 9500 Gilman Drive, MS 0505, La Jolla, CA 92093-0505, USA. 2: Department of Chemistry, University of Tennessee, Knoxville, TN 37996-1600, USA. 3: Air Force Research Laboratory, 10 East Saturn Blvd., Edwards AFB, CA 93524-7680, USA.; Source Info: Jun2008, Vol. 120 Issue 1-3, p199; Subject Term: ELECTRONIC structure; Subject Term: ATOMIC structure; Subject Term: ENERGY-band theory of solids; Subject Term: PARTICLES (Nuclear physics); Subject Term: PHYSICAL & theoretical chemistry; Author-Supplied Keyword: Ab initio calculations; Author-Supplied Keyword: Antisymmetry constraints; Author-Supplied Keyword: Electronic states; Author-Supplied Keyword: Potential energy surfaces; Author-Supplied Keyword: Spectral methods; Number of Pages: 15p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1007/s00214-007-0322-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31811625&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2008-08610-007 AN - 2008-08610-007 AU - Chiaburu, Dan S. AU - Lindsay, Douglas R. T1 - Can do or will do? The importance of self-efficacy and instrumentality for training transfer. JF - Human Resource Development International JO - Human Resource Development International Y1 - 2008/06// VL - 11 IS - 2 SP - 199 EP - 206 CY - United Kingdom PB - Taylor & Francis SN - 1367-8868 SN - 1469-8374 AD - Chiaburu, Dan S., Smeal College of Business, Pennsylvania State University, 403A Business Building, PA, US N1 - Accession Number: 2008-08610-007. Partial author list: First Author & Affiliation: Chiaburu, Dan S.; Smeal College of Business, Pennsylvania State University, PA, US. Release Date: 20090824. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Business Organizations; Instrumentality; Motivation; Self-Efficacy; Transfer (Learning). Classification: Personnel Management & Selection & Training (3620). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 8. Issue Publication Date: Jun, 2008. AB - Training participants' cognitions (training self-efficacy and training instrumentality) can be powerful motivational forces (and impact their motivation to learn and motivation to transfer) and influence important distal outcomes (such as training transfer). Our paper provides a set of ideas linking training cognitions with training outcomes. In addition, we support our propositions with a preliminary empirical test, based on a sample of 254 employees, who provide information on their training perceptions of training and development efforts at their organization. The results indicate that although the 'can do' (training self-efficacy) is a primary predictor or motivation to learn, the 'will do' aspect (training instrumentality) is the primary predictor for motivation to transfer. In addition, training transfer is predicted primarily by motivation to transfer, and has a strong relationship with training instrumentality. Given the paucity of research on the instrumentality aspect, we discuss theoretical and practical implications, and directions for future research. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - self efficacy KW - instrumentality KW - training transfer KW - motivation KW - business organizations KW - 2008 KW - Business Organizations KW - Instrumentality KW - Motivation KW - Self-Efficacy KW - Transfer (Learning) KW - 2008 DO - 10.1080/13678860801933004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-08610-007&site=ehost-live&scope=site UR - dchiaburu@psu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-07365-005 AN - 2008-07365-005 AU - Baker, Monty T. AU - Van Hasselt, Vincent B. AU - Sellers, Alfred H. T1 - Validation of the Novaco Anger Scale in an incarcerated offender population. JF - Criminal Justice and Behavior JO - Criminal Justice and Behavior JA - Crim Justice Behav Y1 - 2008/06// VL - 35 IS - 6 SP - 741 EP - 754 CY - US PB - Sage Publications SN - 0093-8548 SN - 1552-3594 AD - Van Hasselt, Vincent B., Center for Psychological Studies, Nova Southeastern University, 3301 College Avenue, Fort Lauderdale, FL, US, 33314 N1 - Accession Number: 2008-07365-005. Partial author list: First Author & Affiliation: Baker, Monty T.; United States Air Force, US. Release Date: 20081117. Correction Date: 20140303. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Anger; Criminals; Incarceration; Personality; Social Desirability. Minor Descriptor: Psychometrics; Test Validity. Classification: Tests & Testing (2220); Criminal Rehabilitation & Penology (3386). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: State-Trait Anger Scale; Histrionic Clinical Scale 4; Marlowe-Crowne Social Desirability Scale DOI: 10.1037/t05257-000; Millon Clinical Multiaxial Inventory--III [Manual Second Edition]; Novaco Anger Scale DOI: 10.1037/t02391-000; Hostility-Guilt Inventory DOI: 10.1037/t11110-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 14. Issue Publication Date: Jun, 2008. AB - Many attempts have been made to construct measures that assess different aspects of anger. The Novaco Anger Scale (NAS) was developed to assess anger and predict violent behavior. Validity research on the NAS to date has yielded promising results. However, few studies have examined the NAS among incarcerated offenders. The present study examined the psychometric properties of the NAS; investigated its relationships to anger, social desirability, and personality; and evaluated its factor dimensions using confirmatory factor analytic procedures in a sample of male and female incarcerated adults. Results indicated that the theoretically derived scales of the NAS demonstrated both reliability and validity in these groups of offenders. Furthermore, the correlations between the NAS and anger measures were significant. Limitations and suggestions for future research are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - psychometric properties KW - test validation KW - Novaco Anger Scale KW - incarcerated offender population KW - anger KW - social desirability KW - personality KW - 2008 KW - Anger KW - Criminals KW - Incarceration KW - Personality KW - Social Desirability KW - Psychometrics KW - Test Validity KW - 2008 DO - 10.1177/0093854808316275 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-07365-005&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Amer, Maher S. AU - Bennett, Mats AU - Maguire, John F. T1 - A Brillouin scattering study of C60/toluene mixtures JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2008/05/27/ VL - 457 IS - 4-6 M3 - Article SP - 329 EP - 331 SN - 00092614 AB - Abstract: Solutions of C60 in toluene were investigated using Brillouin light scattering. The C60 molar fractions for the solutions studied ranged from 0 (pure toluene) to 36×10−5 (2.8mg/ml C60 which is the saturation limit). The solutions were examined under a VV polarization condition and a distinct shift of the Brillouin doublets position was observed. It was found that adiabatic compressibility of the solution increases linearly as the C60 molar fraction increases. Comparison to recently developed models predicting excess adiabatic compressibility in binary liquid mixtures is provided. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AROMATIC compounds KW - CYCLOBUTARENES KW - TOLUENE KW - HYDROSTATICS N1 - Accession Number: 32075805; Amer, Maher S. 1; Email Address: maher.amer@wright.edu Bennett, Mats 1 Maguire, John F. 2; Affiliation: 1: Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45435, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, OH 45433, USA; Source Info: May2008, Vol. 457 Issue 4-6, p329; Subject Term: AROMATIC compounds; Subject Term: CYCLOBUTARENES; Subject Term: TOLUENE; Subject Term: HYDROSTATICS; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.cplett.2008.04.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32075805&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tsige, Mesfin AU - Patnaik, Soumya S. T1 - An all-atom simulation study of the ordering of liquid squalane near a solid surface JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2008/05/27/ VL - 457 IS - 4-6 M3 - Article SP - 357 EP - 361 SN - 00092614 AB - Abstract: An all-atom molecular dynamics study using the OPLS force field has been carried out to obtain new insights in to the orientation and ordering of liquid squalane near a solid surface. As observed in previous experiments, the squalane molecules closest to a SiO2 substrate are found to be tightly bound with their molecular axis preferentially parallel to the interface. Unlike linear alkanes, the squalane molecules are also found to lie preferentially parallel to the liquid/vapor interface. The simulation results predict that the molecular plane orientation of the squalane molecules changes from mainly parallel to perpendicular to the substrate in going further away from the substrate. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULES KW - AVOGADRO'S law KW - MOLECULAR dynamics KW - ALIPHATIC compounds N1 - Accession Number: 32075811; Tsige, Mesfin 1; Email Address: mtsige@physics.siu.edu Patnaik, Soumya S. 2; Email Address: Soumya.Patnaik@WPAFB.AF.MIL; Affiliation: 1: Department of Physics, Southern Illinois University, Carbondale, IL 62901, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: May2008, Vol. 457 Issue 4-6, p357; Subject Term: MOLECULES; Subject Term: AVOGADRO'S law; Subject Term: MOLECULAR dynamics; Subject Term: ALIPHATIC compounds; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.cplett.2008.04.026 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32075811&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Subramanyam, Guru AU - Leedy, Kevin AU - Varanasi, Chakrapani AU - Neidhard, Robert AU - Stamper, Keith AU - Calcatera, Mark T1 - A LOW VOLTAGE TUNABLE ANALOG PHASE SHIFTER UTILIZING FERROELECTRIC VARACTORS. JO - Integrated Ferroelectrics JF - Integrated Ferroelectrics Y1 - 2008/05/15/ VL - 100 IS - 1 M3 - Article SP - 156 EP - 164 SN - 10584587 AB - A distributed transmission line phase shifter was implemented by periodically loading a coplanar transmission line using ferroelectric varactors in a shunt configuration. A single dc bias applied to the phase shifter circuit provides a large relative phase shift. A relative phase shift of ∼ 305 degrees was obtained at 20 GHz for a dc bias of only 5 V. [ABSTRACT FROM AUTHOR] AB - Copyright of Integrated Ferroelectrics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHASE shifters KW - FERROELECTRIC devices KW - VARACTORS KW - SEMICONDUCTOR diodes KW - ELECTRIC lines KW - coplanar waveguide transmission line KW - distributed transmission line phase shifter KW - ferroelectric varactors KW - voltage tunable dielectrics N1 - Accession Number: 35731383; Subramanyam, Guru 1; Email Address: Guru.Subramanyam@notes.udaytom.edu Leedy, Kevin 2 Varanasi, Chakrapani 3 Neidhard, Robert 2 Stamper, Keith 2 Calcatera, Mark 2; Affiliation: 1: Department of ECE, University of Dayton, 300 College Park, Dayton, OH 45469, USA 2: Air Force Research Laboratory, WPAFB, Dayton, OH 45433, USA 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA; Source Info: 2008, Vol. 100 Issue 1, p156; Subject Term: PHASE shifters; Subject Term: FERROELECTRIC devices; Subject Term: VARACTORS; Subject Term: SEMICONDUCTOR diodes; Subject Term: ELECTRIC lines; Author-Supplied Keyword: coplanar waveguide transmission line; Author-Supplied Keyword: distributed transmission line phase shifter; Author-Supplied Keyword: ferroelectric varactors; Author-Supplied Keyword: voltage tunable dielectrics; NAICS/Industry Codes: 238910 Site Preparation Contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; Number of Pages: 9p; Illustrations: 3 Diagrams, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1080/10584580802540967 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35731383&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kuehner, Joel P. AU - Naik, Sameer V. AU - Kulatilaka, Waruna D. AU - Ning Chai AU - Laurendeau, Normand M. AU - Lucht, Robert P. AU - Scully, Marlan O. AU - Roy, Sukesh AU - Patnaik, Anil K. AU - Gord, James R. T1 - Perturbative theory and modeling of electronic-resonance-enhanced coherent anti-Stokes Raman scattering spectroscopy of nitric oxide. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2008/05/07/ VL - 128 IS - 17 M3 - Article SP - 174308 PB - American Institute of Physics SN - 00219606 AB - A theory is developed for three-laser electronic-resonance-enhanced (ERE) coherent anti-Stokes Raman scattering (CARS) spectroscopy of nitric oxide (NO). A vibrational Q-branch Raman polarization is excited in the NO molecule by the frequency difference between visible Raman pump and Stokes beams. An ultraviolet probe beam is scattered from the induced Raman polarization to produce an ultraviolet ERE-CARS signal. The frequency of the ultraviolet probe beam is selected to be in electronic resonance with rotational transitions in the A 2Σ+←X 2Π (1,0) band of NO. This choice results in a resonance between the frequency of the ERE-CARS signal and transitions in the (0,0) band. The theoretical model for ERE-CARS NO spectra has been developed in the perturbative limit. Comparisons to experimental spectra are presented where either the probe laser was scanned with fixed Stokes frequency or the Stokes laser was scanned with fixed probe frequency. At atmospheric pressure and an NO concentration of 100 ppm, good agreement is found between theoretical and experimental spectral peak locations and relative intensities for both types of spectra. Factors relating to saturation in the experiments are discussed, including implications for the theoretical predictions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS KW - RAMAN spectroscopy KW - RAMAN effect KW - NITRIC oxide KW - SPECTRUM analysis KW - OPTICAL polarization N1 - Accession Number: 32025927; Kuehner, Joel P. 1; Email Address: kuehnerj@wlu.edu Naik, Sameer V. 2 Kulatilaka, Waruna D. 2 Ning Chai 2 Laurendeau, Normand M. 2 Lucht, Robert P. 2,3 Scully, Marlan O. 3,4 Roy, Sukesh 5 Patnaik, Anil K. 5 Gord, James R. 5; Affiliation: 1: Department of Physics and Engineering, Washington and Lee University, Lexington, Virginia 24450, USA 2: School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, USA 3: Institute for Quantum Studies, Texas A&M University, College Station, Texas 77843, USA 4: Applied Physics & Materials Science Group, Princeton University, Princeton, New Jersey 08544, USA 5: Air Force Research Laboratory, Propulsion Directorate Wright Patterson AFB, Ohio 45433, USA; Source Info: 5/7/2008, Vol. 128 Issue 17, p174308; Subject Term: PHYSICS; Subject Term: RAMAN spectroscopy; Subject Term: RAMAN effect; Subject Term: NITRIC oxide; Subject Term: SPECTRUM analysis; Subject Term: OPTICAL polarization; Number of Pages: 12p; Illustrations: 6 Diagrams, 6 Graphs; Document Type: Article L3 - 10.1063/1.2909554 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32025927&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reto Haggenmueller AU - Sameer S. Rahatekar AU - Jeffrey A. Fagan AU - Jaehun Chun AU - Matthew L. Becker AU - Rajesh R. Naik AU - Todd Krauss AU - Lisa Carlson AU - John F. Kadla AU - Paul C. Trulove AU - Douglas F. Fox AU - Hugh C. DeLong AU - Zhichao Fang AU - Shana O. Kelley AU - Jeffrey W. Gilman T1 - Comparison of the Quality of Aqueous Dispersions of Single Wall Carbon Nanotubes Using Surfactants and Biomolecules. JO - Langmuir JF - Langmuir Y1 - 2008/05/06/ VL - 24 IS - 9 M3 - Article SP - 5070 EP - 5078 SN - 07437463 AB - The use of single wall carbon nanotubes (SWCNTs) in current and future applications depends on the ability to process SWCNTs in a solvent to yield high-quality dispersions characterized by individual SWCNTs and possessing a minimum of SWCNT bundles. Many approaches for the dispersion of SWCNTs have been reported. However, there is no general assessment which compares the relative quality and dispersion efficiency of the respective methods. Herein we report a quantitative comparison of the relative ability of “wrapping polymers” including oligonucleotides, peptides, lignin, chitosan, and cellulose and surfactants such as cholates, ionic liquids, and organosulfates to disperse SWCNTs in water. Optical absorption and fluorescence spectroscopy provide quantitative characterization (amount of SWCNTs that can be suspended by a given surfactant and its ability to debundle SWCNTs) of these suspensions. Sodium deoxy cholate (SDOCO), oligonucleotides (GT)15, (GT)10, (AC)15, (AC)10, C10-30, and carboxymethylcellulose (CBMC-250K) exhibited the highest quality suspensions of the various systems studied in this work. The information presented here provides a good framework for further study of SWCNT purification and applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Langmuir is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRUM analysis KW - CARBON nanotubes KW - BIOMOLECULES KW - SURFACE active agents N1 - Accession Number: 33004046; Reto Haggenmueller 1 Sameer S. Rahatekar 1 Jeffrey A. Fagan 1 Jaehun Chun 1 Matthew L. Becker 1 Rajesh R. Naik 1 Todd Krauss 1 Lisa Carlson 1 John F. Kadla 1 Paul C. Trulove 1 Douglas F. Fox 1 Hugh C. DeLong 1 Zhichao Fang 1 Shana O. Kelley 1 Jeffrey W. Gilman 1; Affiliation: 1: National Institute of Standards and Technology, Gaithersburg, Maryland 20899, Air Force ResearchLaboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, Department of Chemistry, Universityof Rochester, Rochester, New York 14627, University of British Columbia, Biomaterials Chemistry,Vancouver, British Columbia V6T 1Z4, Canada, Department of Chemistry, U.S. Naval Academy,Annapolis, MD21402, Air Force Research Laboratory/Air Force Office of Scientific Research,Arlington, Virginia 22203, and Faculty of Medicine, Biochemistry, Faculty of Pharmacy, University ofToronto, Toronto, Ontario M5S 1A8, Canada; Source Info: May2008, Vol. 24 Issue 9, p5070; Subject Term: SPECTRUM analysis; Subject Term: CARBON nanotubes; Subject Term: BIOMOLECULES; Subject Term: SURFACE active agents; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33004046&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maitre, Maj. Benjamin R. T1 - Echoes and Origins of an American Way of War. JO - Comparative Strategy JF - Comparative Strategy Y1 - 2008/05//May/Jun2008 VL - 27 IS - 3 M3 - Article SP - 248 EP - 266 SN - 01495933 AB - The American “way of war” is oftentimes critiqued solely in relation to either concurrent or recently concluded conflicts. Such emphases on contemporary “lessons learned,” or, alternatively, forgotten, perhaps ignore the formative context of strategic cultures that have preceded ours. This article objectively compares a sampling of history's military “superpowers” within three dimensions: collective action, historical determinism, and resource context. Viewing the ways of war of these societies with an eye toward our own provides an illuminating perspective of the echoes and origins pointing toward America's strategic culture today. [ABSTRACT FROM AUTHOR] AB - Copyright of Comparative Strategy is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY art & science KW - MILITARY policy KW - MILITARY doctrine KW - NATIONAL security KW - ARMED Forces KW - HISTORY KW - SOCIAL aspects KW - UNITED States N1 - Accession Number: 33190124; Maitre, Maj. Benjamin R. 1; Affiliation: 1: United States Air Force,; Source Info: May/Jun2008, Vol. 27 Issue 3, p248; Subject Term: MILITARY art & science; Subject Term: MILITARY policy; Subject Term: MILITARY doctrine; Subject Term: NATIONAL security; Subject Term: ARMED Forces; Subject Term: HISTORY; Subject Term: SOCIAL aspects; Subject Term: UNITED States; NAICS/Industry Codes: 928110 National Security; Number of Pages: 19p; Illustrations: 3 Diagrams; Document Type: Article L3 - 10.1080/01495930802185502 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33190124&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buchanan, Dennis J. AU - John, Reji AU - Zawada, Larry P. T1 - Off-axis creep behavior of oxide/oxide NextelTM720/AS-0 JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2008/05// VL - 68 IS - 6 M3 - Article SP - 1313 EP - 1320 SN - 02663538 AB - Abstract: Oxide/oxide ceramic–matrix composites (CMC) are being demonstrated in engine components that are axisymmetric in shape, and subject to axisymmetric thermo-mechanical loadings. Traditionally, woven CMC materials used in these components are made from 0°/90° fiber architectures. In many cases, the highest stresses are not always coincident with the orientation of the reinforcing fibers. Tensile and creeps tests at 1100°C on a ±45° CMC composed of NextelTM720 fibers and a alumina–silica matrix (AS-0) have been performed. The ±45° orientation has approximately two-thirds the ultimate tensile strength of the 0°/90° orientation. The creep rupture strength at 100h for the ±45° orientation is approximately one-third that of the 0°/90° orientation. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXIDE ceramics KW - AXIAL flow KW - SILICA KW - ALUMINUM oxide KW - A. Ceramic–matrix composites KW - B. Creep KW - B. High-temperature properties KW - B. Stress/strain curves KW - C. Deformation KW - Creep rate N1 - Accession Number: 31306882; Buchanan, Dennis J. 1; Email Address: dennis.buchanan@wpafb.af.mil John, Reji 2 Zawada, Larry P. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469-0128, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory (AFRL/MLLMN), Wright-Patterson Air Force Base, OH 45433-7817, United States; Source Info: May2008, Vol. 68 Issue 6, p1313; Subject Term: OXIDE ceramics; Subject Term: AXIAL flow; Subject Term: SILICA; Subject Term: ALUMINUM oxide; Author-Supplied Keyword: A. Ceramic–matrix composites; Author-Supplied Keyword: B. Creep; Author-Supplied Keyword: B. High-temperature properties; Author-Supplied Keyword: B. Stress/strain curves; Author-Supplied Keyword: C. Deformation; Author-Supplied Keyword: Creep rate; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 212322 Industrial Sand Mining; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.compscitech.2007.12.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31306882&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Telitchev, I.Y. AU - Sierakowski, R.L. AU - Zhupanska, O.I. T1 - LOW-VELOCITY IMPACT TESTING OF ELECTRIFIED COMPOSITES: PART II—EXPERIMENTAL SETUP AND PRELIMINARY RESULTS. JO - Experimental Techniques JF - Experimental Techniques Y1 - 2008/05// VL - 32 IS - 3 M3 - Article SP - 53 EP - 57 SN - 07328818 AB - The article presents the experimental setup and preliminary results of the experimental technique designed to study the effects of introducing an electric current on the effect response of composite plates. The study employed a GRC 8120 Drop Weight Impact Test Machine in conducting the experiment. Moreover, a smaller mass impactor and a new drop weight impact test device are used to analyze material response to higher impact velocities. The experiment revealed that the application of 50 ampere (A) direct current (DC) to the composite plate reduced the amount of the absorbed energy by 8% compared to the case of the nonelectrified composite plate. KW - ELECTRIC currents KW - ELECTRIC fields KW - COMPOSITE materials KW - STRENGTH of materials KW - TESTING-machines KW - MATERIALS at high temperatures KW - DIELECTRIC measurements KW - ELECTRIC measurements KW - DIRECT currents N1 - Accession Number: 32032634; Telitchev, I.Y. 1 Sierakowski, R.L. 2 Zhupanska, O.I. 3; Affiliation: 1: Dr. I. Ye. Telitchev is a Research Associate in UF-REEF at the University of Florida, Shalimar, FL 2: Dr. R.L. Sierakowski (SEM member) is Chief Scientist in Munitions Directorate, Air Force Research Laboratory, Eglin Air Force Base, FL 3: Dr. O.I. Zhupanska is Assistant Professor in the Department of Mechanical and Industrial Engineering, The University of Iowa, Iowa City, IA.; Source Info: May2008, Vol. 32 Issue 3, p53; Subject Term: ELECTRIC currents; Subject Term: ELECTRIC fields; Subject Term: COMPOSITE materials; Subject Term: STRENGTH of materials; Subject Term: TESTING-machines; Subject Term: MATERIALS at high temperatures; Subject Term: DIELECTRIC measurements; Subject Term: ELECTRIC measurements; Subject Term: DIRECT currents; Number of Pages: 5p; Illustrations: 6 Black and White Photographs, 3 Diagrams, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1111/j.1747-1567.2007.00244.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32032634&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Héctor Rodríguez AU - Margaret Williams AU - John S. Wilkes AU - Robin D. Rogers T1 - Ionic liquids for liquid-in-glass thermometers. JO - Green Chemistry JF - Green Chemistry Y1 - 2008/05// VL - 10 IS - 5 M3 - Article SP - 501 EP - 507 SN - 14639262 AB - The varied portfolio of applications of ionic liquids (ILs) is broadened in this work by presenting the possibility of their use as thermometric fluids in liquid-in-glass thermometers. Two ILs, namely tris(2-hydroxyethyl)methylammonium methylsulfate ([TEMA][MeSO4]) and trihexyl(tetradecyl)phosphonium bis{(trifluoromethyl)sulfonyl}amide ([P66614][NTf2]), have been selected for the construction of thermometers with ranges of operation tuned to general and speciality applications. The regular expansion of the IL volume with changes in temperature has been tested, and successful prototypes have been built, consisting of liquid-in-glass devices with an approximately spherical reservoir and a capillary tube attached. These devices have the advantage of operating with a fluid of ionic nature and a practically negligible vapor pressure. In addition, the inherent tunability of IL properties is a powerful tool in the possible design of speciality thermometers. [ABSTRACT FROM AUTHOR] AB - Copyright of Green Chemistry is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONIC liquids KW - THERMOMETERS KW - PERMEABILITY KW - TEMPERATURE measuring instruments N1 - Accession Number: 32932574; Héctor Rodríguez 1,2 Margaret Williams 3 John S. Wilkes 3 Robin D. Rogers 1,4; Affiliation: 1: Department of Chemistry, Center for Green Manufacturing and Alabama Institute for Manufacturing Excellence, The University of Alabama Tuscaloosa, AL USA 2: QUILL, School of Chemistry and Chemical Engineering, The Queen's University of Belfast Belfast, Northern Ireland UK 3: Department of Chemistry, US Air Force Academy2355 Fairchild Dr. Suite 2N225 USAF Academy, CO USA 4: QUILL, School of Chemistry and Chemical Engineering, The Queen's University of Belfast Belfast, Northern Ireland UK; Source Info: May2008, Vol. 10 Issue 5, p501; Subject Term: IONIC liquids; Subject Term: THERMOMETERS; Subject Term: PERMEABILITY; Subject Term: TEMPERATURE measuring instruments; NAICS/Industry Codes: 417930 Professional machinery, equipment and supplies merchant wholesalers; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32932574&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stewart, James AU - Havrilla, Michael AU - Berrie, Jeff AU - Kornbau, Nathan AU - Stenholm, Garrett AU - Albert, Alan T1 - Material characterization using a hand-held network analyzer. JO - International Journal of Applied Electromagnetics & Mechanics JF - International Journal of Applied Electromagnetics & Mechanics Y1 - 2008/05// VL - 28 IS - 1/2 M3 - Article SP - 95 EP - 100 PB - IOS Press SN - 13835416 AB - In this paper a method employing a hand-held network analyzer is presented that allows in situ measurement of materials in environments unreachable by traditional network analyzers. Calculation of permittivity and permeability is accomplished using two reflection measurements from a waveguide probe. A comparison between the theoretical and experimentally measured reflection coefficients allows extraction of the material parameters using a root search algorithm. Parameter extraction results are presented and compared to those obtained from an HP8510 network analyzer employing the same waveguide probe and test materials. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Applied Electromagnetics & Mechanics is the property of IOS Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVEGUIDES KW - NETWORK analysis (Planning) KW - ELECTRIC conductors KW - ELECTRIC waves KW - ELECTROMAGNETIC waves KW - Materials characterization KW - network analyzer KW - open-ended waveguide KW - permeability KW - permittivity N1 - Accession Number: 34427841; Stewart, James 1; Email Address: james.stewart@hanscom.af.mil Havrilla, Michael 2 Berrie, Jeff 3 Kornbau, Nathan 3 Stenholm, Garrett 4 Albert, Alan 4; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, 80 Scott Dr. Hanscom AFB, MA 01731, USA 2: Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433, USA 3: BerrieHill Research Corporation, 240 W. Elmwood Dr., Ste. 1001, Datyton, OH 45459, USA 4: Air Force Research Laboratory, Materials & Manufacturing Directorate, 2230 10th St., Wright-Patterson AFB, OH 45433, USA; Source Info: 2008, Vol. 28 Issue 1/2, p95; Subject Term: WAVEGUIDES; Subject Term: NETWORK analysis (Planning); Subject Term: ELECTRIC conductors; Subject Term: ELECTRIC waves; Subject Term: ELECTROMAGNETIC waves; Author-Supplied Keyword: Materials characterization; Author-Supplied Keyword: network analyzer; Author-Supplied Keyword: open-ended waveguide; Author-Supplied Keyword: permeability; Author-Supplied Keyword: permittivity; Number of Pages: 6p; Illustrations: 1 Black and White Photograph, 1 Diagram, 1 Chart, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34427841&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Suzanne D. AU - Smith, Jeanne A. AU - Bowden, David R. T1 - Transmission characteristics of suspension seats in multi-axis vibration environments JO - International Journal of Industrial Ergonomics JF - International Journal of Industrial Ergonomics Y1 - 2008/05// VL - 38 IS - 5/6 M3 - Article SP - 434 EP - 446 SN - 01698141 AB - Abstract: The multi-axis vibration transmission characteristics of selected suspension seats were investigated in the laboratory. Subjects were exposed to a flat acceleration spectrum and two low frequency signals extracted from multi-axis acceleration data recorded at the floor of a passenger locomotive. Triaxial accelerations were measured at the floor of the vibration table and at the interfaces between the subject and mounted seat (seat pan and seat back). The transmission ratios between the overall seat pan and seat back accelerations and floor accelerations provided an effective tool for evaluating the effects of measurement site, vibration direction, and posture among the selected seating systems. The results showed that the system transfer matrix, estimated using a multiple-input/single-output model, would be less than ideal for predicting low frequency operational seat vibration when using suspension seats. The Seat Effective Amplitude Transmissibility (SEAT), estimated for the tested locomotive seats, was used to predict the weighted seat pan accelerations and Vibration Total Values for assessing a 1-h operational exposure in accordance with ISO 2631-1: 1997. Relevance to industry: Multi-axis SEAT values can be estimated for seating systems tested in the laboratory using representative operational exposures. These values can be applied to monitored vehicle floor accelerations to target potentially harmful vibration in accordance with ISO 2631-1: 1997, assuming the operational exposures have similar frequency and magnitude characteristics. The transmission at the seat back should be considered when substantial low frequency multi-axis vibration is present. [Copyright &y& Elsevier] AB - Copyright of International Journal of Industrial Ergonomics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Industrial design KW - Automobile industry KW - Engineering design KW - Automobile seats KW - Comfort KW - Health KW - Multi-axis vibration KW - Suspension seats KW - Transmissibility KW - Whole-body vibration N1 - Accession Number: 31918879; Smith, Suzanne D. 1; Email Address: Suzanne.smith@wpafb.af.mil; Smith, Jeanne A. 2; Bowden, David R. 2; Affiliations: 1: Air Force Research Laboratory, AFRL/RHPA, USA; 2: General Dynamics AIS, 2800 Q Street, Wright-Patterson AFB, OH 45433-7947, USA; Issue Info: May2008, Vol. 38 Issue 5/6, p434; Thesaurus Term: Industrial design; Thesaurus Term: Automobile industry; Subject Term: Engineering design; Subject Term: Automobile seats; Author-Supplied Keyword: Comfort; Author-Supplied Keyword: Health; Author-Supplied Keyword: Multi-axis vibration; Author-Supplied Keyword: Suspension seats; Author-Supplied Keyword: Transmissibility; Author-Supplied Keyword: Whole-body vibration; NAICS/Industry Codes: 336110 Automobile and light-duty motor vehicle manufacturing; NAICS/Industry Codes: 336111 Automobile Manufacturing; NAICS/Industry Codes: 336211 Motor Vehicle Body Manufacturing; NAICS/Industry Codes: 415110 New and used automobile and light-duty truck merchant wholesalers; NAICS/Industry Codes: 441110 New Car Dealers; NAICS/Industry Codes: 423110 Automobile and Other Motor Vehicle Merchant Wholesalers; NAICS/Industry Codes: 336360 Motor Vehicle Seating and Interior Trim Manufacturing; NAICS/Industry Codes: 541330 Engineering Services; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.ergon.2007.10.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=31918879&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Plunkett, B. AU - Cazacu, O. AU - Barlat, F. T1 - Orthotropic yield criteria for description of the anisotropy in tension and compression of sheet metals JO - International Journal of Plasticity JF - International Journal of Plasticity Y1 - 2008/05// VL - 24 IS - 5 M3 - Article SP - 847 EP - 866 SN - 07496419 AB - Abstract: In this paper, yield functions describing the anisotropic behavior of textured metals are proposed. These yield functions are extensions to orthotropy of the isotropic yield function proposed by Cazacu et al. (Cazacu, O., Plunkett, B., Barlat, F., 2006. Orthotropic yield criterion for hexagonal close packed metals. Int. J. Plasticity 22, 1171–1194). Anisotropy is introduced using linear transformations of the stress deviator. It is shown that the proposed anisotropic yield functions represent with great accuracy both the tensile and compressive anisotropy in yield stresses and r-values of materials with hcp crystal structure and of metal sheets with cubic crystal structure. Furthermore, it is demonstrated that the proposed formulations can describe very accurately the anisotropic behavior of metal sheets whose tensile and compressive stresses are equal. It was shown that the accuracy in the description of the details of the flow and r-values anisotropy in both tension and compression can be further increased if more than two linear transformations are included in the formulation. If the in-plane anisotropy of the sheet in tension and compression is not very strong, the yield criterion CPB06ex2 provides a very good description of the main trends. [Copyright &y& Elsevier] AB - Copyright of International Journal of Plasticity is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATTER -- Properties KW - CRYSTALLOGRAPHY KW - ANISOTROPY KW - DEFORMATIONS (Mechanics) KW - Anisotropic yield function KW - Hexagonal metals KW - Linear transformations KW - Tension/compression asymmetry N1 - Accession Number: 29435606; Plunkett, B. 1; Email Address: brian.plunkett@eglin.af.mil Cazacu, O. 2 Barlat, F. 3; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Eglin Air Force Base, FL 32542, USA 2: Department of Mechanical and Aerospace Engineering, University of Florida/REEF, Shalimar, FL 32579-1163, USA 3: Materials Science Division, Alcoa Inc., Alcoa Technical Center, 100 Technical Drive, Alcoa Center, PA 15069-0001, USA; Source Info: May2008, Vol. 24 Issue 5, p847; Subject Term: MATTER -- Properties; Subject Term: CRYSTALLOGRAPHY; Subject Term: ANISOTROPY; Subject Term: DEFORMATIONS (Mechanics); Author-Supplied Keyword: Anisotropic yield function; Author-Supplied Keyword: Hexagonal metals; Author-Supplied Keyword: Linear transformations; Author-Supplied Keyword: Tension/compression asymmetry; Number of Pages: 20p; Document Type: Article L3 - 10.1016/j.ijplas.2007.07.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=29435606&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Attar, Peter J. AU - Gordnier, Raymond E. AU - Visbal, Miguel R. T1 - Numerical Simulation of Full-Span Delta Wing Buffet at High Angle of Attack. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2008/05//May/Jun2008 VL - 45 IS - 3 M3 - Article SP - 857 EP - 857 SN - 00218669 AB - In this work, the buffet of a full-span, highly flexible, 50-deg-sweep delta wing at high angle of attack is studied using a computational aeroelastic solver. The aeroelastic solver couples a second-order finite difference solution of the Euler equations to a large-rotation nonlinear finite element structural solver. Particular attention is paid to the poststall region, in which previous experiments on highly flexible low-sweep delta wings have noted increased buffet response accompanied by lift enhancement and a delay in stall. It is thought that these phenomena are due to the reorganization of the flow and reformation of a leading-edge vortex structure. The nature of this enhanced lift is studied here for the flexible delta wing at an angle of attack of 25 deg and a flow velocity of 30 m/s. Using a prescribed wing motion, it is shown that it is possible to predict lift enhancement by solving only the inviscid Euler equations. The enhanced lift is due to a reorganization of the flow and the resulting region of increased suction near the apex of the wing. It is found that the mode of wing vibration has little influence on the enhanced lift phenomena, because both a prescribed symmetric first-mode motion and a prescribed antisymmetric third-mode motion led to lift enhancement. It is also insensitive to the wing vibration frequency for the range of frequencies tested, with the concession that below some minimum frequency, lift enhancement does not occur. The amplitude of wing vibration has some effect on the time-averaged lift coefficient. Fully coupled aeroelastic computations were also performed in this study for the wing. The fully aeroelastic computation did not predict the enhanced structural dynamic behavior and lift that was observed in the experiment. The dominant dynamic response of the wing was near the first mode, which has a frequency that is too low to initiate flow organization and the resulting enhanced lift due to increased suction. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES -- Design & construction KW - DELTA wing airplanes KW - AEROELASTICITY KW - AERODYNAMICS KW - EULER characteristic KW - VISCOUS flow KW - REYNOLDS number N1 - Accession Number: 33142761; Attar, Peter J. 1; Email Address: peter.attar@ou.edu Gordnier, Raymond E. 2 Visbal, Miguel R. 3; Affiliation: 1: Assistant Professor, Department of Mechanical and Aerospace Engineering, University of Oklahoma 2: Senior Research Aerospace Engineer, Computational Sciences Branch, Air Vehicles Directorate, U.S. Air Force Research Laboratory, Wright–Patterson Air Force Base, Ohio 45433-7913 3: Technical Area Leader, Computational Sciences Branch, Air Vehicles Directorate, U.S. Air Force Research Laboratory, Wright–Patterson Air Force Base, Ohio 45433-7913; Source Info: May/Jun2008, Vol. 45 Issue 3, p857; Subject Term: AIRPLANES -- Design & construction; Subject Term: DELTA wing airplanes; Subject Term: AEROELASTICITY; Subject Term: AERODYNAMICS; Subject Term: EULER characteristic; Subject Term: VISCOUS flow; Subject Term: REYNOLDS number; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33142761&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yong Liu AU - Ming Wu AU - Zhu, J. Jim AU - Lawrence, Douglas A. AU - Gutmark, Ephraim J. AU - Myatt, James H. AU - May, Cameron A. T1 - Reactive Flow Control of Delta-Wing Vortex. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2008/05//May/Jun2008 VL - 45 IS - 3 M3 - Article SP - 880 EP - 880 SN - 00218669 AB - In this paper, the reactive flow control of delta-wing leading-edge vortices using along-core pulse-width modulation flow injection is presented. Leading-edge vortices on the upper surface of a delta wing can augment lift. Manipulating breakdown points of leading-edge vortices can effectively change the delta wing's lift and drag and generate attitude-control torque. In this paper, a black-box dynamic model for active flow control of vortex breakdown points is identified from wind-tunnel data using a model scheduling method. Based on the identified model, a closed-loop active flow controller is developed. Simulation and real-time wind-tunnel test show that the closed-loop controller can effectively manipulate the upper surface pressure of the delta wing, which indicates that the closed-loop controller can effectively control vortex breakdown points. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DELTA wing airplanes KW - AIRPLANES -- Triangular wings KW - LEADING edges (Aerodynamics) KW - AERODYNAMICS KW - AEROFOILS KW - FLOW injection analysis KW - FLAPS (Airplanes) N1 - Accession Number: 33142763; Yong Liu; Email Address: Yong.Liu.1@ohio.edu Ming Wu 1 Zhu, J. Jim 2; Email Address: zhuj@ohio.edu Lawrence, Douglas A. 3; Email Address: dal@ohio.edu. Gutmark, Ephraim J. 4; Email Address: Ephraim.Gutmark@uc.edu Myatt, James H. 5 May, Cameron A. 6; Affiliation: 1: School of Electrical Engineering and Computer Science, Ohio University, Athens, Ohio 45701. 2: Professor, School of Electrical Engineering and Computer Science, Ohio University, Athens, Ohio 45701. 3: Associate Professor, School of Electrical Engineering and Computer Science, Ohio University, Athens, Ohio 45701. 4: Professor, Aerospace Engineering and Engineering Mechanics, University of Cincinnati, Cincinnati, Ohio 45221. 5: Senior Aerospace Engineer, Air Vehicles Directorate, U.S. Air Force Research Laboratory (AFRL/VACA). 6: Aerospace Engineering and Engineering Mechanics, University of Cincinnati, Cincinnati, Ohio 45221.; Source Info: May/Jun2008, Vol. 45 Issue 3, p880; Subject Term: DELTA wing airplanes; Subject Term: AIRPLANES -- Triangular wings; Subject Term: LEADING edges (Aerodynamics); Subject Term: AERODYNAMICS; Subject Term: AEROFOILS; Subject Term: FLOW injection analysis; Subject Term: FLAPS (Airplanes); Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33142763&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Badcock, K. J. AU - Woodgate, M. A. AU - Allan, M. R. AU - Beran, P. S. T1 - Wing-Rock Limit Cycle Oscillation Prediction Based on Computational Fluid Dynamics. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2008/05//May/Jun2008 VL - 45 IS - 3 M3 - Article SP - 954 EP - 954 SN - 00218669 AB - The investigation of flight dynamics instability, when based on computational fluid dynamics level aerodynamics, is traditionally done in the time domain. It is, however, possible to look to the behavior of the eigenspectrum of the Jacobian of the semidiscrete system to obtain information at a reduced computational cost. The central computational task in this approach is to solve a sparse linear system, with a key issue being the calculation of an effective parallel preconditioner. With a knowledge of the bifurcation angle and the critical eigenvalue/eigenvector, it is possible to develop a reduced-order model which can predict the limit cycle amplitude postbifurcation. In this paper the shifted inverse power method, built on a preconditioned sparse matrix solver, is used to predict the wingrock onset angle of an 80-deg delta wing. The postbifurcation limit cycle oscillations are then calculated using a reduced model which uses knowledge of the critical mode of the system. This problem is considered here as a prototype flight dynamics instability. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - STABILITY of airplanes KW - FLUID dynamics KW - EIGENVALUES KW - MATRICES KW - STABILITY (Mechanics) KW - BIFURCATION theory KW - AIRPLANES -- Triangular wings N1 - Accession Number: 33142770; Badcock, K. J. 1; Email Address: K.J.Badcock@liverpool.ac.uk Woodgate, M. A. 2 Allan, M. R. 3 Beran, P. S. 4; Affiliation: 1: Professor, Computational Fluid Dynamics Laboratory, Flight Sciences and Technology, Department of Engineering, University of Liverpool, Liverpool, England L69 3BX, United Kingdom. 2: Research Assistant, Computational Fluid Dynamics Laboratory, Flight Sciences and Technology, Department of Engineering, University of Liverpool, Liverpool, England L69 3BX, United Kingdom. 3: Research Assistant, Computational Fluid Dynamics Laboratory, Department of Aerospace Engineering, University of Glasgow, Glasgow, Scotland G12 8QQ, United Kingdom. 4: Principal Research Aerospace Engineer, Multidisciplinary Technologies Center, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7531.; Source Info: May/Jun2008, Vol. 45 Issue 3, p954; Subject Term: AERODYNAMICS; Subject Term: STABILITY of airplanes; Subject Term: FLUID dynamics; Subject Term: EIGENVALUES; Subject Term: MATRICES; Subject Term: STABILITY (Mechanics); Subject Term: BIFURCATION theory; Subject Term: AIRPLANES -- Triangular wings; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33142770&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Norquist, Donald C. AU - Desrochers, Paul R. AU - McNicholl, Patrick J. AU - Roadcap, John R. T1 - A Characterization of Cirrus Cloud Properties That Affect Laser Propagation. JO - Journal of Applied Meteorology & Climatology JF - Journal of Applied Meteorology & Climatology Y1 - 2008/05// VL - 47 IS - 5 M3 - Article SP - 1322 EP - 1336 PB - American Meteorological Society SN - 15588424 AB - Future high-altitude laser systems may be affected by cirrus clouds. Laser transmission models were applied to measured and retrieved cirrus properties to determine cirrus impact on power incident on a target or receiver. A major goal was to see how well radiosondes and geostationary satellite imagery could specify the required properties. Based on the use of ground-based radar and lidar measurements as a reference, errors in cirrus-top and cirrus-base height estimates from radiosonde observations were 20%–25% of geostationary satellite retrieval errors. Radiosondes had a perfect cirrus detection rate as compared with 80% for satellite detection. Ice water path and effective particle size were obtained with a published radar–lidar retrieval algorithm and a documented satellite algorithm. Radar–lidar particle size and ice water path were 1.5 and 3 times the satellite retrievals, respectively. Radar–lidar-based laser extinction coefficients were 55% greater than satellite values. Measured radar–lidar cirrus thickness was consistently greater than satellite-retrieved thickness, but radar–lidar microphysical retrieval required detection by both sensors at each range gate, which limited the retrievals’ vertical extent. Greater radar–lidar extinction and greater satellite-based cirrus thickness yielded comparable optical depths for the two independent retrievals. Laser extinction–transmission models applied to radiosonde-retrieved cirrus heights and satellite-retrieved microphysical properties revealed a significant power loss by all models as the laser beam transits the cirrus layer. This suggests that cirrus location is more important than microphysics in high-altitude laser test support. Geostationary satellite imagery may be insufficient in cirrus detection and retrieval accuracy. Humidity-sensitive radiosondes are a potential proxy for ground-based remote sensors in cirrus detection and altitude determination. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Meteorology & Climatology is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CIRRUS clouds KW - ELECTRONIC systems KW - LASERS KW - RADIOSONDES KW - METEOROLOGICAL instruments KW - ARTIFICIAL satellites KW - OPTICAL radar N1 - Accession Number: 32518025; Norquist, Donald C. 1; Email Address: AFRL.RVB.PA@hanscom.af.mil Desrochers, Paul R. 1 McNicholl, Patrick J. 1 Roadcap, John R. 1; Affiliation: 1: Battlespace Environment Division, Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts; Source Info: May2008, Vol. 47 Issue 5, p1322; Subject Term: CIRRUS clouds; Subject Term: ELECTRONIC systems; Subject Term: LASERS; Subject Term: RADIOSONDES; Subject Term: METEOROLOGICAL instruments; Subject Term: ARTIFICIAL satellites; Subject Term: OPTICAL radar; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 15p; Illustrations: 4 Charts, 8 Graphs; Document Type: Article L3 - 10.1175/2007JAMC1756.1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32518025&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Natarajan, Lalgudi V. AU - Wofford, Jeremy M. AU - Tondiglia, Vincent P. AU - Sutherland, Richard L. AU - Koerner, Hilmar AU - Vaia, Richard A. AU - Bunning, Timothy J. T1 - Electro-thermal tuning in a negative dielectric cholesteric liquid crystal material. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/05// VL - 103 IS - 9 M3 - Article SP - 093107 PB - American Institute of Physics SN - 00218979 AB - The thermal and electrical tunability of a cholesteric liquid crystal containing a negative dielectric anisotropy liquid crystal in a planar alignment was studied. The physical, optical, and electro-optical characteristics of mixtures containing different ratios of chiral dopant S811 and the negative dielectric anisotropy liquid crystal ZLI-2806 were examined. A smectic A phase was seen at room temperature for S811 loadings >20 wt %. Below 20%, a room temperature cholesteric phase was observed. Upon heating mixtures with composition S811 >20%, the selective reflection notch of the cholesteric phase appeared and blueshifted with temperature. Thermal tuning from 2300 to 500 nm was observed over the temperature range of 23–55 °C. Polarized optical microscopy, differential scanning calorimetry, and x-ray studies were utilized to confirm the temperature-dependent phase behavior. Tuning of ∼50 nm by the application of a direct current electric field was also observed with no onset of electrohydrodynamic instabilities for voltages up to ∼300 V. Bandwidth broadening but not tuning was obtained with the application of alternating current fields. Electrical tuning is likely due to pitch contraction brought about through the annealing of defects. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - ANISOTROPY KW - POLARIZATION microscopy KW - CALORIMETRY KW - ELECTRIC fields KW - X-ray diffraction N1 - Accession Number: 32078943; Natarajan, Lalgudi V. 1 Wofford, Jeremy M. 1 Tondiglia, Vincent P. 1 Sutherland, Richard L. 1 Koerner, Hilmar 1 Vaia, Richard A. 1 Bunning, Timothy J. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433,; Source Info: May2008, Vol. 103 Issue 9, p093107; Subject Term: LIQUID crystals; Subject Term: ANISOTROPY; Subject Term: POLARIZATION microscopy; Subject Term: CALORIMETRY; Subject Term: ELECTRIC fields; Subject Term: X-ray diffraction; Number of Pages: 6p; Illustrations: 3 Diagrams, 1 Chart, 6 Graphs; Document Type: Article L3 - 10.1063/1.2913326 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32078943&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Moradi, Lee G. AU - Davidson, James S. AU - Dinan, Robert J. T1 - Resistance of Membrane Retrofit Concrete Masonry Walls to Lateral Pressure. JO - Journal of Performance of Constructed Facilities JF - Journal of Performance of Constructed Facilities Y1 - 2008/05//May/Jun2008 VL - 22 IS - 3 M3 - Article SP - 131 EP - 142 PB - American Society of Civil Engineers SN - 08873828 AB - This paper first describes the current state of analysis for the response of unreinforced concrete masonry walls subjected to lateral uniform pressure. The formulation is based on the initial elastic response, the subsequent initiation of cracks and the nonlinear rocking response, and the eventual large displacement and potential collapse. The necessary equations are developed for these phases in the form of a resistance function. The paper then incorporates membrane retrofit materials to strengthen the wall’s resistance to lateral pressure, and develops the necessary resistance function equations. In blast tests, membrane retrofit unreinforced masonry walls have experienced severe cracking and large displacements without collapse. This is of high interest to the Department of Defense, the protection of diplomatic facilities, and the construction industry impacted by hurricanes and other high wind events. The paper concludes with examples that demonstrate application of membrane retrofits indeed increase the resistance of the wall to lateral pressure. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Performance of Constructed Facilities is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MASONRY KW - FOUNDATIONS (Engineering) KW - CONCRETE masonry KW - PLASTERING KW - CONSTRUCTION industry KW - CONCRETE construction KW - FACILITY management KW - GROUTING KW - CONCRETE pavements KW - Blast loads KW - Lateral pressure KW - Masonry KW - Walls N1 - Accession Number: 32026421; Moradi, Lee G. 1; Email Address: moradi@uab.edu Davidson, James S. 2 Dinan, Robert J. 3; Affiliation: 1: Director of Engineering, Center for Biophysical Sciences and Engineering, Univ. of Alabama at Birmingham, CBSE 100, 1530 Third Ave. South, Birmingham, AL 35294 2: Associate Professor, Dept. of Civil Engineering, Auburn Univ., Auburn, AL 36849 3: Senior Research Engineer, Air Force Research Laboratory, 139 Barnes Dr., Suite 2, Tyndall AFB, FL 32403; Source Info: May/Jun2008, Vol. 22 Issue 3, p131; Subject Term: MASONRY; Subject Term: FOUNDATIONS (Engineering); Subject Term: CONCRETE masonry; Subject Term: PLASTERING; Subject Term: CONSTRUCTION industry; Subject Term: CONCRETE construction; Subject Term: FACILITY management; Subject Term: GROUTING; Subject Term: CONCRETE pavements; Author-Supplied Keyword: Blast loads; Author-Supplied Keyword: Lateral pressure; Author-Supplied Keyword: Masonry; Author-Supplied Keyword: Walls; NAICS/Industry Codes: 238110 Poured Concrete Foundation and Structure Contractors; NAICS/Industry Codes: 238990 All Other Specialty Trade Contractors; NAICS/Industry Codes: 238140 Masonry Contractors; NAICS/Industry Codes: 236110 Residential building construction; NAICS/Industry Codes: 531120 Lessors of Nonresidential Buildings (except Miniwarehouses); NAICS/Industry Codes: 238910 Site Preparation Contractors; NAICS/Industry Codes: 238130 Framing Contractors; NAICS/Industry Codes: 327310 Cement Manufacturing; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 238310 Drywall and Insulation Contractors; Number of Pages: 12p; Illustrations: 8 Diagrams, 1 Chart, 10 Graphs; Document Type: Article L3 - 10.1061/(ASCE)0887-3828(2008)22:3(131) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32026421&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lane, Steven A. AU - Lacy, Seth L. AU - Babuska, Vit AU - Hanes, Stephen AU - Schrader, Karl AU - Fuentes, Robert T1 - Active Vibration Control of a Deployable Optical Telescope. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2008/05//May/Jun2008 VL - 45 IS - 3 M3 - Article SP - 568 EP - 586 SN - 00224650 AB - The U.S. Air Force Research Laboratory developed the deployable optical telescope testbed as part of the large deployable optics research program. The goal of this program was to investigate the feasibility of a deployable space telescope concept and to mature critical enabling technologies to provide risk reduction for the general mission concept. This paper discusses many of the challenges encountered in laboratory testing of complex, sensitive, deployable systems. Implementation of a white-light interferometer for initialization and calibration, a pencil beam or single-pixel heterodyne interferometer for measuring primary mirror motion, and a Twyman-Green interferometer system for wave-front monitoring are discussed. Development of integrated system models and system identification methods for controller design are discussed. Active structural control was demonstrated to maintain optical alignment of the telescope while subjected to simulated reaction wheel disturbances, ambient vibration and atmospheric beam steering. Wave-front sensing and interferogram analysis were used to quantitatively assess optical performance, but wave-front error was not fed back to the controller. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TELESCOPES KW - OPTICAL instruments KW - PHYSICAL measurements KW - AIR power (Military science) KW - SYSTEM analysis KW - STRUCTURAL dynamics KW - OPTICS N1 - Accession Number: 32989348; Lane, Steven A. 1,2 Lacy, Seth L. 3 Babuska, Vit 2,4 Hanes, Stephen 5 Schrader, Karl 6 Fuentes, Robert 6; Affiliation: 1: Senior Aerospace Engineer, Space Vehicles Directorate, 3550 Aberdeen Avenue, U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117 2: Senior Member AIAA 3: Research Aerospace Engineer, Space Vehicles Directorate, 3550 Aberdeen Avenue, U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117 4: Senior Research Scientist, Department 1525, Building 880, Sandia National Laboratory, Albuquerque, New Mexico 87185 5: Senior Optical Physicist, The Boeing Company, Albuquerque, New Mexico 87185 6: Senior Control Engineer, 4411 The 25 Way Northeast, Suite 350, Boeing-SVS, Inc., Albuquerque, New Mexico 87109; Source Info: May/Jun2008, Vol. 45 Issue 3, p568; Subject Term: TELESCOPES; Subject Term: OPTICAL instruments; Subject Term: PHYSICAL measurements; Subject Term: AIR power (Military science); Subject Term: SYSTEM analysis; Subject Term: STRUCTURAL dynamics; Subject Term: OPTICS; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 446130 Optical Goods Stores; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 453999 All other miscellaneous store retailers (except beer and wine-making supplies stores); NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; Number of Pages: 19p; Illustrations: 12 Black and White Photographs, 11 Diagrams, 8 Charts, 20 Graphs; Document Type: Article L3 - 10.2514/I.3083 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32989348&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fair, Geoff E. AU - Hay, Randall S. AU - Boakye, Emmanuel E. T1 - Precipitation Coating of Monazite on Woven Ceramic Fibers: II. Effect of Processing Conditions on Coating Morphology and Strength Retention of Nextel™ 610 and 720 Fibers. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2008/05// VL - 91 IS - 5 M3 - Article SP - 1508 EP - 1516 PB - Wiley-Blackwell SN - 00027820 AB - Woven cloths of Nextel™ 610 and 720 fibers were coated with monazite by precipitation. The cloths were first saturated with concentrated precursor solutions, and then submerged in warm water to initiate precipitation onto the fiber surfaces. Coatings were characterized by scanning electron microscopy, and transmission electron microscopy; thermogravimetric analysis was performed on LaPO4 owders precipitated in solution under the same conditions as the coatings were deposited. Coating thickness distributions were measured and analyzed. Coated fiber strength was measured following heat treatment for 2 h at 1200°C. Processing conditions which retain a substantial fraction of the uncoated fiber strength are identified, and are discussed in the context of current understanding of strength degradation in coated fibers. Strength retention of coated Nextel™ 610 fibers following heat treatment was broadly insensitive to precursor solution chemistry and was more strongly affected by intercoat firings which govern the final coating microstructure. For fixed processing conditions, more strength degradation was observed in Nextel™ 720 due to higher residual stresses in the fiber. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONAZITE KW - SURFACE coatings KW - CERAMIC fibers KW - PRECIPITATION (Chemistry) KW - SCANNING electron microscopy KW - TRANSMISSION electron microscopy KW - SOLUTION (Chemistry) KW - MICROSTRUCTURE KW - RESIDUAL stresses N1 - Accession Number: 32000636; Fair, Geoff E. 1; Email Address: geoff.fair@wpafb.af.mil Hay, Randall S. 1 Boakye, Emmanuel E. 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio. 2: UES Inc., Dayton, Ohio.; Source Info: May2008, Vol. 91 Issue 5, p1508; Subject Term: MONAZITE; Subject Term: SURFACE coatings; Subject Term: CERAMIC fibers; Subject Term: PRECIPITATION (Chemistry); Subject Term: SCANNING electron microscopy; Subject Term: TRANSMISSION electron microscopy; Subject Term: SOLUTION (Chemistry); Subject Term: MICROSTRUCTURE; Subject Term: RESIDUAL stresses; NAICS/Industry Codes: 327999 All Other Miscellaneous Nonmetallic Mineral Product Manufacturing; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 9p; Illustrations: 10 Black and White Photographs, 3 Charts, 3 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2008.02333.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32000636&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Samoc, Marek AU - Samoc, Anna AU - Humphrey, Mark G. AU - Cifuentes, Marie P. AU - Luther-Davies, Barry AU - Fleitz, Paul A. T1 - Z-Scan Studies of Dispersion of the Complex Third-Order Nonlinearity of Nonlinear Absorbing Chromophores. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2008/05// VL - 485 IS - 1 M3 - Article SP - 894 EP - 902 SN - 15421406 AB - We have studied dispersion of the cubic nonlinear optical properties of organic and organometallic nonlinear absorbers. The results indicate that a multitude of excited states may be contributing to the resonances seen in the real and imaginary part of the complex hyperpolarizability. Attempts to understand the relation between the real and imaginary part of the hyperpolarizability in terms of a Kramers-Kronig transform are undertaken. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL properties KW - REFRACTION (Optics) KW - POLARIZABILITY (Electricity) KW - ABSORPTION KW - PHOTONICS KW - ORGANOMETALLIC compounds KW - hyperpolarizabilities KW - Kramers-Kronig analysis KW - nonlinear refraction KW - two-photon absorption N1 - Accession Number: 34140862; Samoc, Marek 1,2; Email Address: marek.samoc@anu.edu.au Samoc, Anna 1 Humphrey, Mark G. 3 Cifuentes, Marie P. 3 Luther-Davies, Barry 1 Fleitz, Paul A. 4; Affiliation: 1: Laser Physics Centre, Australian National University, Canberra, Australia 2: Institute for Lasers, Photonics and Biophotonics, SUNY Buffalo, NY, USA 3: Department of Chemistry, Australian National University, Canberra, Australia 4: US Air Force Research Laboratory, Wright Patterson AFB, OH, USA; Source Info: 2008, Vol. 485 Issue 1, p894; Subject Term: OPTICAL properties; Subject Term: REFRACTION (Optics); Subject Term: POLARIZABILITY (Electricity); Subject Term: ABSORPTION; Subject Term: PHOTONICS; Subject Term: ORGANOMETALLIC compounds; Author-Supplied Keyword: hyperpolarizabilities; Author-Supplied Keyword: Kramers-Kronig analysis; Author-Supplied Keyword: nonlinear refraction; Author-Supplied Keyword: two-photon absorption; Number of Pages: 9p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1080/15421400801924714 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34140862&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cummings, Russell M. AU - Morton, Scott A. AU - McDaniel, David R. T1 - Experiences in accurately predicting time-dependent flows JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences Y1 - 2008/05// VL - 44 IS - 4 M3 - Article SP - 241 EP - 257 SN - 03760421 AB - Abstract: As computational fluid dynamics matures, researchers attempt to perform numerical simulations on increasingly complex aerodynamic flows. One type of flow that has become feasible to simulate is massively separated flow fields, which exhibit high levels of flow unsteadiness. While traditional computational fluid dynamic approaches may be able to simulate these flows, it is not obvious what restrictions should be followed in order to insure that the numerical simulations are accurate and trustworthy. Our research group has considerable experience in computing massively separated flow fields about various aircraft configurations, which has led us to examine the factors necessary for making high-quality time-dependent flow computations. The factors we have identified include: grid density and local refinement, the numerical approach, performing a time-step study, the use of sub-iterations for temporal accuracy, the appropriate use of temporal damping, and the use of appropriate turbulence models. We have a variety of cases from which to draw results, including delta wings and the F-18C, F-16C, and F-16XL aircraft. Results show that while it is possible to obtain accurate unsteady aerodynamic computations, there is a high computational cost associated with performing the calculations. Rules of thumb and possible shortcuts for accurate prediction of massively separated flows are also discussed. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - FLUID dynamics KW - RESEARCH KW - FLUID mechanics N1 - Accession Number: 32493716; Cummings, Russell M. 1; Email Address: russ.cummings@usafa.edu Morton, Scott A. 2; Email Address: scott.morton@eglin.af.mil McDaniel, David R. 1; Email Address: david.mcdaniel.ctr@usafa.edu; Affiliation: 1: Department of Aeronautics, United States Air Force Academy CO 80840, USA 2: Air Force Seek Eagle Office, Eglin Air Force Base, FL 32542, USA; Source Info: May2008, Vol. 44 Issue 4, p241; Subject Term: AERODYNAMICS; Subject Term: FLUID dynamics; Subject Term: RESEARCH; Subject Term: FLUID mechanics; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.paerosci.2008.01.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32493716&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR ID - 2008-06539-010 AN - 2008-06539-010 AU - Dror, Itiel E. AU - Stevenage, Sarah V. AU - Ashworth, Alan R. S. T1 - Helping the cognitive system learn: Exaggerating distinctiveness and uniqueness. JF - Applied Cognitive Psychology JO - Applied Cognitive Psychology JA - Appl Cogn Psychol Y1 - 2008/05// VL - 22 IS - 4 SP - 573 EP - 584 CY - US PB - John Wiley & Sons SN - 0888-4080 SN - 1099-0720 AD - Dror, Itiel E., School of Psychology, University of Southampton, Southampton, United Kingdom, SO17 1BJ N1 - Accession Number: 2008-06539-010. Other Journal Title: Human Learning: Journal of Practical Research & Applications. Partial author list: First Author & Affiliation: Dror, Itiel E.; University of Southampton, Southampton, United Kingdom. Release Date: 20080609. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Grant Information: Dror, Itiel E. Major Descriptor: Aircraft; Cognitive Processes; Learning; Visual Perception. Minor Descriptor: Object Recognition; Visual Stimulation. Classification: Human Experimental Psychology (2300). Population: Human (10). Location: US. Methodology: Empirical Study; Qualitative Study. References Available: Y. Page Count: 12. Issue Publication Date: May, 2008. AB - The caricature advantage demonstrates that performance is better when exaggerated stimuli are presented rather than a faithful image. This can be understood with respect to a theoretical framework in which caricaturing maximises the distinctiveness and thus minimises any perceptual or representational confusion. In this study we examine the possibility to harness caricatures to enhance learning. Thus, during learning the caricatures help the cognitive system pick up the unique and distinctive features of the learned material. This in turn helps to construct representations that correctly direct attention to the critical information. We trained 113 participants to identify aircraft across any orientation and found that the use of caricature is advantageous. However, the caricature advantage was most effective in complex learning where it is difficult to differentiate among different aircraft. Furthermore, the caricature advantage for subsequent recognition is attenuated when over-learning has been achieved. These results are discussed in terms of the learning situations in which caricatures can be most effective in enhancing learning. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cognitive system learn KW - exaggerated stimuli KW - harness caricatures KW - distinctive features KW - aircraft KW - 2008 KW - Aircraft KW - Cognitive Processes KW - Learning KW - Visual Perception KW - Object Recognition KW - Visual Stimulation KW - 2008 U1 - Sponsor: Economic and Social Research Council/Engineering and Physical Sciences Research Council, United Kingdom. Other Details: Research grant for Merging technology and cognition. Recipients: Dror, Itiel E. U1 - Sponsor: Brooks Air Force Base, TRAIN Laboratory, US. Recipients: No recipient indicated U1 - Sponsor: US Air Force Office of Scientific Research, US. Recipients: No recipient indicated DO - 10.1002/acp.1383 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-06539-010&site=ehost-live&scope=site UR - id@ecs.soton.ac.uk DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Larson, C. William T1 - Perspective on One Decade of Laser Propulsion Research at Air Force Research Laboratory. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/04/28/ VL - 997 IS - 1 M3 - Article SP - 84 EP - 96 PB - American Institute of Physics SN - 0094243X AB - The Air Force Laser Propulsion Program spanned nearly 10-years and included about 35-weeks of experimental research with the Pulsed Laser Vulnerability Test System of the High Energy Laser Systems Test Facility at White Sands Missile Range, New Mexico, WSMR/HELSTF/PLVTS. PLVTS is a pulsed CO2 laser that produces up to 10 kW of power in ∼10 cm2 spot at wavelength of 10.6 microns. The laser is capable of a pulse repetition rate up to 25 Hz, with pulse durations of about 20 microseconds. During the program basic research was conducted on the production of propulsion thrust from laser energy through heating of air and ablation of various candidate rocket propellant fuels. Flight tests with an ablation fuel (Delrin) and air were accomplished with a model Laser Lightcraft vehicle that was optimized for propulsion by the PLVTS at its maximum power output, 10 kW at 25 Hz, 400 J/pulse. Altitudes exceeding 200-feet were achieved with ablation fuels. The most recent contributions to the technology included development of a mini-thruster standard for testing of chemically enhanced fuels and theoretical calculations on the performance of formulations containing ammonium nitrate and Delrin. Results of these calculations will also be reported here. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS in aeronautics KW - MILITARY applications of lasers KW - PROPELLANTS KW - ROCKETS (Aeronautics) KW - LASER ablation KW - UNITED States KW - AIR Force Research Laboratory (Edwards Air Force Base, Calif.) N1 - Accession Number: 31896722; Larson, C. William 1; Affiliation: 1: Electric Propulsion Laboratory, Air Force Research Laboratory, Edwards AFB, CA 93524-7680; Source Info: 4/28/2008, Vol. 997 Issue 1, p84; Subject Term: LASERS in aeronautics; Subject Term: MILITARY applications of lasers; Subject Term: PROPELLANTS; Subject Term: ROCKETS (Aeronautics); Subject Term: LASER ablation; Subject Term: UNITED States; Company/Entity: AIR Force Research Laboratory (Edwards Air Force Base, Calif.); NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 13p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.2931934 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31896722&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CONF AU - Davis, Eric W. AU - Mead, Franklin B. T1 - Review Of Laser Lightcraft Propulsion System. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/04/28/ VL - 997 IS - 1 M3 - Conference Paper SP - 283 EP - 294 PB - American Institute of Physics SN - 0094243X AB - Laser-powered “Lightcraft” systems that deliver nano-satellites to LEO have been studied for the Air Force Research Laboratory (AFRL). The study was built on the extensive Lightcraft laser propulsion technology already developed by theoretical and experimental work by the AFRL's Propulsion Directorate at Edwards AFB, CA. Here we review the history and engineering-physics of the laser Lightcraft system and its propulsive performance. We will also review the effectiveness and cost of a Lightcraft vehicle powered by a high-energy laser beam. One result of this study is the significant influence of laser wavelength on the power lost during laser beam propagation through Earth's atmosphere and in space. It was discovered that energy and power losses in the laser beam are extremely sensitive to wavelength for Earth-To-Orbit missions, and this significantly affects the amount of mass that can be placed into orbit for a given maximum amount of radiated power from a ground-based laser. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONFERENCES & conventions KW - LASERS -- Industrial applications KW - LASER beams KW - LASER ablation KW - LIGHT amplifiers N1 - Accession Number: 31896757; Davis, Eric W. 1 Mead, Franklin B. 2; Affiliation: 1: Institute for Advanced Studies at Austin, 11855 Research Blvd., Austin, TX 78759 2: Propulsion Directorate, Air Force Research Laboratory, Edwards AFB, CA 93524; Source Info: 4/28/2008, Vol. 997 Issue 1, p283; Subject Term: CONFERENCES & conventions; Subject Term: LASERS -- Industrial applications; Subject Term: LASER beams; Subject Term: LASER ablation; Subject Term: LIGHT amplifiers; NAICS/Industry Codes: 561920 Convention and Trade Show Organizers; Number of Pages: 12p; Illustrations: 3 Diagrams, 1 Chart, 4 Graphs; Document Type: Conference Paper L3 - 10.1063/1.2931899 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31896757&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhdanov, B. V. AU - Sell, J. AU - Knize, R. J. T1 - Multiple laser diode array pumped Cs laser with 48 W output power. JO - Electronics Letters JF - Electronics Letters Y1 - 2008/04/24/ VL - 44 IS - 9 M3 - Article SP - 582 EP - 584 PB - Institution of Engineering & Technology SN - 00135194 AB - A Cs vapour laser that utilises four laser diode arrays for longitudinal pumping of the gain medium is demonstrated. A maximum output power of 48 W was achieved with a total optical to optical efficiency of 49% and a slope efficiency of 52%. This work shows that the diode pumped alkali lasers can be scaled to higher powers. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL vapor lasers KW - DIODES KW - LASERS KW - CESIUM KW - NONLINEAR optics N1 - Accession Number: 31739437; Zhdanov, B. V. 1; Email Address: boris.zhdanov.ctr@usafa.edu Sell, J. 1 Knize, R. J. 1; Affiliation: 1: Department of Physics, US Air Force Academy, 2354 Fairchild Dr., Ste. 2A31, USAF Academy, CO 80840, USA; Source Info: 4/24/2008, Vol. 44 Issue 9, p582; Subject Term: METAL vapor lasers; Subject Term: DIODES; Subject Term: LASERS; Subject Term: CESIUM; Subject Term: NONLINEAR optics; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 3p; Illustrations: 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1049/el:20080728 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31739437&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mack, Johnathan P. AU - Boatz, Jerry A. AU - Gerken, Michael T1 - Synthesis, NMR and Vibrational Spectroscopic Characterization, and Computational Study of the cis-IO2F32- Anion. JO - Inorganic Chemistry JF - Inorganic Chemistry Y1 - 2008/04/21/ VL - 47 IS - 8 M3 - Article SP - 3243 EP - 3247 SN - 00201669 AB - The N(CH3)4+ salt of the cis-lO2F32- anion was synthesized from [N(CH3)4][lO2F2] and excess [N(CH3)4][F] in CH3CN solvent. The [N(CH3)4]2[lO2F3] salt was characterized by Raman, infrared, and 19F solid-state MAS NMR spectroscopy. Geometry optimization and calculation of the vibrational frequencies at the DFT level of theory corroborated the experimental finding that the lO2F32 anion exists as a single isomer with a cis-dioxo and mer-trifluoro arrangement. The fluorine atom in lO2F32- that is trans to one of the oxygen atoms is weakly bound with a calculated bond length of 228.1 pm. The lO2F32- anion is only the second example of an AEO2F3 species after XeO2F3-. [ABSTRACT FROM AUTHOR] AB - Copyright of Inorganic Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANIONS KW - IODINE KW - FLUORIDES KW - NUCLEAR isomers KW - NUCLEAR magnetic resonance spectroscopy KW - VIBRATIONAL spectra KW - MATHEMATICAL optimization N1 - Accession Number: 32093641; Mack, Johnathan P. 1 Boatz, Jerry A. 2 Gerken, Michael 1; Email Address: michael.gerken@uleth.ca; Affiliation: 1: Department of Chemistry and Biochemistry, The University of Lethbridge, Lethbridge, Alberta TIK 3M4, Ganada 2: Air Force Research Laboratory, Edwards Air Force Base, California 93524; Source Info: 4/21/2008, Vol. 47 Issue 8, p3243; Subject Term: ANIONS; Subject Term: IODINE; Subject Term: FLUORIDES; Subject Term: NUCLEAR isomers; Subject Term: NUCLEAR magnetic resonance spectroscopy; Subject Term: VIBRATIONAL spectra; Subject Term: MATHEMATICAL optimization; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 5p; Illustrations: 3 Charts, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32093641&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lifton, Nathaniel AU - Smart, D.F. AU - Shea, M.A. T1 - Scaling time-integrated in situ cosmogenic nuclide production rates using a continuous geomagnetic model JO - Earth & Planetary Science Letters JF - Earth & Planetary Science Letters Y1 - 2008/04/15/ VL - 268 IS - 1/2 M3 - Article SP - 190 EP - 201 SN - 0012821X AB - Abstract: Spatial and temporal variations in Earth''s magnetic field affect the corresponding time-integrated distribution of in situ cosmogenic nuclide (CN) production rates. These effects can be quantified by the effective vertical cutoff rigidity (R C), a measure of the energy required for primary cosmic rays to penetrate the geomagnetic field and interact with the atmosphere at a given location. Recent CN production rate scaling models are based on atmospheric cosmic-ray measurements parameterized using R C estimates derived from detailed modern geomagnetic field representations which include both dipole and non-dipole field contributions. However, published methods for quantifying time-integrated geomagnetic effects on CN production rate scaling rely on various geocentric dipolar approximations to R C driven by separate records of paleomagnetic pole position and paleointensity. Therefore, applying dipolar paleomagnetic records spanning millennial time scales (which explicitly ignore past non-dipole effects) to scaling models derived using modern geomagnetic field representations may lead to systematic errors in any calculated results. A recently published continuous geomagnetic model covering the last 7 kyr (CALS7K.2) [M. Korte and C.G. Constable, Continuous geomagnetic field models for the past 7 millennia: 2. CALS7K, 2005. Geochem., Geophys., Geosyst. 6 Q02H16, doi:10.1029/2004GC000801.] may allow reduction of such errors by bridging the gap between detailed modern geomagnetic and simplified paleomagnetic models. We have developed a new model framework describing temporal and spatial variation in R C for 0–7 ka and earlier, based on CALS7K.2, which explicitly accounts for non-dipole field effects while attempting to mitigate systematic scaling biases. Scaling factors derived using the new R C framework predict significant longitudinal variability in time-integrated CN production, while predictions using dipolar geomagnetic approximations do not. One can test these predictions using in situ cosmogenic 14C (in situ 14C) in quartz. Due to its short half-life (5.73 kyr), 14C attains secular equilibrium between production and decay after approximately 25 kyr of exposure, at which point its measured concentration is only a function of its integrated average production rate. Initial in situ 14C results from samples at secular equilibrium from 38°N and 3.5 km in Tibet and eastern California are consistent with the longitudinal variability predicted by the new framework. [Copyright &y& Elsevier] AB - Copyright of Earth & Planetary Science Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Geomagnetism KW - Astronomy KW - Magnetic fields KW - Nuclear physics KW - cosmogenic nuclides KW - geomagnetic field models KW - non-dipole field KW - surface exposure dating KW - time-integrated production rates N1 - Accession Number: 31306667; Lifton, Nathaniel 1; Email Address: lifton@email.arizona.edu; Smart, D.F. 2; Shea, M.A. 2; Affiliations: 1: Geosciences Department and Arizona AMS Facility, University of Arizona, Tucson, AZ, 85721, USA; 2: (Emeritus) Air Force Research Laboratory (VSBX), Hanscom AFB, Bedford, MA 01731, USA; Issue Info: Apr2008, Vol. 268 Issue 1/2, p190; Thesaurus Term: Geomagnetism; Thesaurus Term: Astronomy; Thesaurus Term: Magnetic fields; Subject Term: Nuclear physics; Author-Supplied Keyword: cosmogenic nuclides; Author-Supplied Keyword: geomagnetic field models; Author-Supplied Keyword: non-dipole field; Author-Supplied Keyword: surface exposure dating; Author-Supplied Keyword: time-integrated production rates; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.epsl.2008.01.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=31306667&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Huang, Danhong AU - Gumbs, Godfrey AU - Pepper, M. T1 - Effects of inelastic capture, tunneling escape, and quantum confinement on surface acoustic wave-dragged photocurrents in quantum wells. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/04/15/ VL - 103 IS - 8 M3 - Article SP - 083714 EP - 8 PB - American Institute of Physics SN - 00218979 AB - We developed a dual-charged-fluid model for studying the steady-state transport of surface acoustic wave (SAW)-dragged photocurrents of one-dimensional (1D) confined-state carriers. This model includes the effects of quantum confinement and the escape via tunneling of SAW-dragged 1D carriers, as well as the effects of the inelastic capture of two-dimensional continuous-state carriers and the self-consistent space-charge field. Our numerical results revealed a high photocurrent gain due to the suppressed recombination of 1D carriers in a crossover region of the sample between an absorption strip and a surface gate. Based on this model, responsivities for the SAW-dragged photocurrents in a quantum well are calculated as functions of the gate voltage, photon flux, SAW power and frequency, and temperature, respectively. A responsivity as high as 103 A/W was found for high gate voltages and SAW powers, as well as for low photon fluxes and SAW frequencies. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM wells KW - TUNNELING (Physics) KW - ELECTRIC waves KW - SURFACES (Physics) KW - SURFACE energy N1 - Accession Number: 31873379; Huang, Danhong 1; Email Address: danhong.huang@kirtland.af.mil Gumbs, Godfrey 2 Pepper, M. 3; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117, USA 2: Department of Physics and Astronomy, Hunter College of the City University of New York, 695 Park Avenue, New York, New York 10021, USA 3: Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, United Kingdom; Source Info: Apr2008, Vol. 103 Issue 8, p083714; Subject Term: QUANTUM wells; Subject Term: TUNNELING (Physics); Subject Term: ELECTRIC waves; Subject Term: SURFACES (Physics); Subject Term: SURFACE energy; Number of Pages: 8p; Illustrations: 2 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1063/1.2890403 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31873379&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hendrik Heinz AU - R. A. Vaia AU - B. L. Farmer T1 - Relation between Packing Density and Thermal Transitions of Alkyl Chains on Layered Silicate and Metal Surfaces. JO - Langmuir JF - Langmuir Y1 - 2008/04/15/ VL - 24 IS - 8 M3 - Article SP - 3727 EP - 3733 SN - 07437463 AB - Self-assembled layers of alkyl chains grafted onto the surfaces of layered silicates, metal, and oxidic nanoparticles are utilized to control interactions with external media by tuning the packing density of the chains on the surface, head group functionality, and chain length. Characterization through experiment and simulation shows that the orientation of the alkyl layers and reversible phase transitions on heating are a function of the cross-sectional area of the alkyl chains in relation to the available surface area per alkyl chain. On even surfaces, a packing density less than 0.2 leads to nearly parallel orientation of the alkyl chains on the surface, a high degree of conformational disorder, and no reversible melting transitions. A packing density between 0.2 and 0.75 leads to intermediate inclination angles, semicrystalline order, and reversible melting transitions on heating. A packing density above 0.75 results in nearly vertical alignment of the surfactants on the surface, a high degree of crystalline character, and absence of reversible melting transitions. Curved surfaces can be understood by the same principle, taking into account a local radius of curvature and a distance-dependent packing density on the surface. In good approximation, this simple model is independent from the length of the alkyl chains (a minimum length of C10is required to form sufficiently distinctive patterns), the chemical nature of the surface, and of the surfactant head group. These structural details primarily determine the functionality of alkyl modified surfaces and the temperature of thermal transitions. [ABSTRACT FROM AUTHOR] AB - Copyright of Langmuir is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC surfaces KW - HEAT transfer KW - NANOPARTICLES KW - SURFACE active agents N1 - Accession Number: 32792574; Hendrik Heinz 1 R. A. Vaia 1 B. L. Farmer 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB,Ohio 45433 and Department of Polymer Engineering, University of Akron, Akron, Ohio 44325; Source Info: Apr2008, Vol. 24 Issue 8, p3727; Subject Term: METALLIC surfaces; Subject Term: HEAT transfer; Subject Term: NANOPARTICLES; Subject Term: SURFACE active agents; NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32792574&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sands, Brian L. AU - Ganguly, Biswa N. AU - Tachibana, Kunihide T1 - A streamer-like atmospheric pressure plasma jet. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/04/14/ VL - 92 IS - 15 M3 - Article SP - 151503 PB - American Institute of Physics SN - 00036951 AB - The properties of an atmospheric pressure plasma jet (APPJ) are examined in a single-cell dielectric capillary configuration. In contrast to some other flow-driven APPJs, this stable, cold plasma jet is electrically driven, composed of rapidly propagating ionization fronts with speeds of the order of 107 cm/s. Using spatially and temporally resolved optical diagnostics, it is demonstrated that the plasma jet is initiated independent of the dielectric barrier discharge inside the capillary. It is also shown that the properties and dynamics of this APPJ are directly analogous to those of positive corona streamer discharges. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATMOSPHERIC pressure KW - PLASMA devices KW - DIELECTRICS KW - ATMOSPHERIC ionization KW - OPTICAL engineering KW - CORONA (Electricity) N1 - Accession Number: 31828241; Sands, Brian L. 1; Email Address: brian.sands@wpafb.af.mil Ganguly, Biswa N. 2; Email Address: biswa.ganguly@wpafb.af.mil Tachibana, Kunihide 3; Affiliation: 1: UES, Inc., 2645 5th St., Wright Patterson Air Force Base, Ohio 45433-7251, USA 2: Air Force Research Laboratory, 2645 5th St., Wright Patterson Air Force Base, Ohio 45433-7251, USA 3: Department of Electronic Science and Engineering, Kyoto University, Kyoto-daigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan; Source Info: 4/14/2008, Vol. 92 Issue 15, p151503; Subject Term: ATMOSPHERIC pressure; Subject Term: PLASMA devices; Subject Term: DIELECTRICS; Subject Term: ATMOSPHERIC ionization; Subject Term: OPTICAL engineering; Subject Term: CORONA (Electricity); Number of Pages: 3p; Illustrations: 1 Color Photograph, 1 Diagram, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.2909084 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31828241&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anthony Midey AU - Itzhak Dotan AU - A. A. Viggiano T1 - Temperature Dependences for the Reactions of O-and O2-with O2(a1g) from 200 to 700 K. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2008/04/10/ VL - 112 IS - 14 M3 - Article SP - 3040 EP - 3045 SN - 10895639 AB - Rate constants and product ion distributions for the O-and O2-reactions with O2(a 1g) were measured as a function of temperature from 200 to 700 K. The measurements were made in a selected ion flow tube (SIFT) using a newly calibrated O2(a 1g) emission detection scheme with a chemical singlet oxygen generator. The rate constant for the O2-reaction is ∼7 × 10-10cm3s-1at all temperatures, approaching the Langevin collision rate constant. Electron detachment was the only product observed with O2-. The O-reaction shows a positive temperature dependence in the rate constant from 200 to 700 K. The product branching ratios show that almost all of the products at 200 K are electron detachment, with an increasing contribution from the slightly endothermic charge-transfer channel up to 700 K, accounting for 75% of the products at that temperature. The increase in the overall rate constant can be attributed to this increase in the contribution the endothermic channel. The charge-transfer product channel rate constant follows the Arrhenius form, and the detachment product channel rate constant is essentially independent of temperature with a value of ∼6.1 × 10-11cm3s-1. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TEMPERATURE KW - CHEMICAL reactions KW - OXYGEN KW - IONS N1 - Accession Number: 32792315; Anthony Midey 1 Itzhak Dotan 1 A. A. Viggiano 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom Air Force Base,Massachusetts 01731-3010, and Open University of Israel, 108 Ravutski Street, Raanana, Israel 43107; Source Info: Apr2008, Vol. 112 Issue 14, p3040; Subject Term: TEMPERATURE; Subject Term: CHEMICAL reactions; Subject Term: OXYGEN; Subject Term: IONS; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32792315&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ongstad, A. P. AU - Kaspi, R. AU - Dente, G. C. AU - Tilton, M. L. AU - Barresi, R. AU - Chavez, J. R. T1 - Wavelength tuning limitations in optically pumped type-II antimonide lasers. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/04/07/ VL - 92 IS - 14 M3 - Article SP - 141106 PB - American Institute of Physics SN - 00036951 AB - In this paper, we examine the wavelength tuning limitations of type-II antimonide lasers containing InAs/InGaSb/InAs quantum wells. Wavelength tuning is accomplished by varying the thickness of the InAs electron wells while keeping all else fixed. In principle, these wells can be tuned from λ≈2.5 μm out to far IR wavelengths by increasing the thickness of the InAs layers. However, a practical upper limit of λ≈9.5 μm is set due to the high waveguide losses awg and the diminishing modal overlap with the gain at longer wavelengths. The waveguide losses grow as awg∝λ3.44 and are attributable to free carrier absorbance. In order for the long-IR laser devices to achieve threshold, they must continually band fill, spectrally tuning to shorter wavelengths, until the laser gain exceeds the losses, which occurs near 9.5 μm. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVELENGTHS KW - LENGTH measurement KW - QUANTUM wells KW - WAVEGUIDES KW - PARTICLES (Nuclear physics) KW - PHYSICS N1 - Accession Number: 31739391; Ongstad, A. P. 1; Email Address: andrew.ongstad@kirtland.af.mil Kaspi, R. 1 Dente, G. C. 2 Tilton, M. L. 2 Barresi, R. 2 Chavez, J. R. 2; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, Albuquerque, New Mexico 87117, USA 2: Boeing Defense and Space Group, Albuquerque, New Mexico 87106, USA; Source Info: 4/7/2008, Vol. 92 Issue 14, p141106; Subject Term: WAVELENGTHS; Subject Term: LENGTH measurement; Subject Term: QUANTUM wells; Subject Term: WAVEGUIDES; Subject Term: PARTICLES (Nuclear physics); Subject Term: PHYSICS; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.2904702 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31739391&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhaunerchyk, V. AU - Thomas, R. D. AU - Geppert, W. D. AU - Hamberg, M. AU - Kamińska, M. AU - Vigren, E. AU - Larsson, M. AU - Midey, A. J. AU - Viggiano, A. A. T1 - Dissociative recombination of OPCl+ and OPCl2+: Pushing the upper mass limit at CRYRING. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2008/04/07/ VL - 128 IS - 13 M3 - Article SP - 134308 PB - American Institute of Physics SN - 00219606 AB - The dissociative recombination of OPCl+ and OPCl2+ has been studied at the storage ring CRYRING. The rate constants as a function of electron temperature have been derived to be 7.63×10-7(Te/300)-0.89 and >1.2×10-6(Te/300)-1.22 cm3 s-1, respectively. The lower limit quoted for the latter rate constant reflects the experimental inability to detect all of the reaction products. The branching fractions from the reaction have been measured for OPCl+ at ≈0 eV interaction energy and are determined to be N(O+P+Cl)=(16±7)%, N(O+PCl)=(16±3)% and N(OP+Cl)=(68±5)%. These values have been obtained assuming that the rearrangement channel forming P+ClO is negligible, and ab initio calculations using GAUSSIAN03 are presented for the ion structures and energetics to support such an assumption. Finally, the limitations to using heavy ion storage rings such as CRYRING for studies into the dissociative recombination of large singly charged molecular ions are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONS KW - HEAVY ions KW - MATTER -- Properties KW - SCISSION (Chemistry) KW - DISSOCIATION (Chemistry) KW - GAUSSIAN processes KW - THERMODYNAMICS N1 - Accession Number: 31632579; Zhaunerchyk, V. 1; Email Address: vz@physto.se Thomas, R. D. 1 Geppert, W. D. 1 Hamberg, M. 1 Kamińska, M. 1 Vigren, E. 1 Larsson, M. 1 Midey, A. J. 2 Viggiano, A. A. 2; Affiliation: 1: Department of Physics, Albanova University Centre, Stockholm University, SE-106 91 Stockholm, Sweden 2: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Rd., Hanscom Air Force Base, Massachusetts 01731-3010, USA; Source Info: 4/7/2008, Vol. 128 Issue 13, p134308; Subject Term: IONS; Subject Term: HEAVY ions; Subject Term: MATTER -- Properties; Subject Term: SCISSION (Chemistry); Subject Term: DISSOCIATION (Chemistry); Subject Term: GAUSSIAN processes; Subject Term: THERMODYNAMICS; Number of Pages: 7p; Illustrations: 1 Diagram, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.2884924 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31632579&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Groeber, Michael AU - Ghosh, Somnath AU - Uchic, Michael D. AU - Dimiduk, Dennis M. T1 - A framework for automated analysis and simulation of 3D polycrystalline microstructures.: Part 1: Statistical characterization JO - Acta Materialia JF - Acta Materialia Y1 - 2008/04// VL - 56 IS - 6 M3 - Article SP - 1257 EP - 1273 SN - 13596454 AB - Abstract: This is the first of a two-part paper aimed at developing a robust framework for the collection, quantification and simulation of 3D polycrystalline microstructures. Serial-sectioning methods are used to generate data that characterize the microstructural morphology and crystallography of grains. The microstructure simulation model and codes take as input a series of electron backscatter diffraction (EBSD) patterns from the serial-sectioning experiments. Robust statistical analysis of the grain-level microstructures in 3D is conducted in this part of this paper. This analysis can provide necessary information for modeling and simulation efforts in the form of a highly refined and unbiased description of specific features, such as the distribution of grain size, shape and orientation. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYCRYSTALS KW - MICROSTRUCTURE KW - CRYSTALS KW - MATTER -- Constitution KW - SIMULATION methods & models KW - SYSTEMS engineering KW - Crystal structure KW - Electron backscattering diffraction (EBSD) KW - Modeling KW - Serial-sectioning N1 - Accession Number: 31254224; Groeber, Michael 1; Email Address: groeber.9@osu.edu Ghosh, Somnath 2; Email Address: ghosh.5@osu.edu Uchic, Michael D. 3; Email Address: Michael.Uchic@wpafb.af.mil Dimiduk, Dennis M. 3; Email Address: Dennis.Dimiduk@wpafb.af.mil; Affiliation: 1: Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA 2: Mechanical Engineering and Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMD, Wright-Patterson AFB, OH 45433, USA; Source Info: Apr2008, Vol. 56 Issue 6, p1257; Subject Term: POLYCRYSTALS; Subject Term: MICROSTRUCTURE; Subject Term: CRYSTALS; Subject Term: MATTER -- Constitution; Subject Term: SIMULATION methods & models; Subject Term: SYSTEMS engineering; Author-Supplied Keyword: Crystal structure; Author-Supplied Keyword: Electron backscattering diffraction (EBSD); Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Serial-sectioning; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.actamat.2007.11.041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31254224&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Groeber, Michael AU - Ghosh, Somnath AU - Uchic, Michael D. AU - Dimiduk, Dennis M. T1 - A framework for automated analysis and simulation of 3D polycrystalline microstructures. Part 2: Synthetic structure generation JO - Acta Materialia JF - Acta Materialia Y1 - 2008/04// VL - 56 IS - 6 M3 - Article SP - 1274 EP - 1287 SN - 13596454 AB - Abstract: This is the second of a two-part paper intended to develop a framework for collecting data, quantifying characteristics and subsequently representing microstructural information from polycrystalline materials. The framework is motivated by the need for incorporating accurate three-dimensional grain-level morphology and crystallography in computational analysis models that are currently gaining momentum. Following the quantification of microstructural features in the first part, this paper focuses on the development of models and codes for generating statistically equivalent synthetic microstructures. With input in the form of statistical characterization data obtained from serial-sectioning of the microstructures, this module is intended to provide computational modeling efforts with a microstructure representation that is statistically similar to the actual polycrystalline material. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYCRYSTALS KW - MICROSTRUCTURE KW - CRYSTALS KW - MATTER -- Constitution KW - AUTOMATION KW - SIMULATION methods & models KW - Crystal structure KW - Electron backscattering diffraction (EBSD) KW - Modeling KW - Serial-sectioning N1 - Accession Number: 31254225; Groeber, Michael 1; Email Address: groeber.9@osu.edu Ghosh, Somnath 2; Email Address: ghosh.5@osu.edu Uchic, Michael D. 3; Email Address: Michael.Uchic@wpafb.af.mil Dimiduk, Dennis M. 3; Email Address: Dennis.Dimiduk@wpafb.af.mil; Affiliation: 1: Graduate Research Associate, Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA 2: Nordholt Professor, Mechanical Engineering and Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMD, Wright-Patterson AFB, OH 45433, USA; Source Info: Apr2008, Vol. 56 Issue 6, p1274; Subject Term: POLYCRYSTALS; Subject Term: MICROSTRUCTURE; Subject Term: CRYSTALS; Subject Term: MATTER -- Constitution; Subject Term: AUTOMATION; Subject Term: SIMULATION methods & models; Author-Supplied Keyword: Crystal structure; Author-Supplied Keyword: Electron backscattering diffraction (EBSD); Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Serial-sectioning; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.actamat.2007.11.040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31254225&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Steele, Chuck T1 - Sober Men and True: Sailor Lives in the Royal Navy, 1900-1945. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) J1 - Armed Forces & Society (0095327X) PY - 2008/04// Y1 - 2008/04// VL - 34 IS - 3 M3 - Book Review SP - 520 EP - 522 SN - 0095327X AB - The article reviews the book "Sober Men and True: Sailor Lives in the Royal Navy, 1900-1945," by Christopher McKee. KW - SOBER Men & True: Sailor Lives in the Royal Navy 1900-1945 (Book) KW - MCKEE, Christopher KW - GREAT Britain. Royal Navy KW - NONFICTION N1 - Accession Number: 31543060; Source Information: Apr2008, Vol. 34 Issue 3, p520; Subject Term: SOBER Men & True: Sailor Lives in the Royal Navy 1900-1945 (Book); Subject Term: MCKEE, Christopher; Subject Term: GREAT Britain. Royal Navy; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; L3 - 10.117710095327X07307006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=31543060&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Balster, Lori M. AU - Corporan, Edwin AU - DeWitt, Matthew J. AU - Edwards, J. Timothy AU - Ervin, Jamie S. AU - Graham, John L. AU - Lee, Seong-Young AU - Pal, Sibtosh AU - Phelps, Donald K. AU - Rudnick, Leslie R. AU - Santoro, Robert J. AU - Schobert, Harold H. AU - Shafer, Linda M. AU - Striebich, Richard C. AU - West, Zachary J. AU - Wilson, Geoffrey R. AU - Woodward, Roger AU - Zabarnick, Steven T1 - Development of an advanced, thermally stable, coal-based jet fuel JO - Fuel Processing Technology JF - Fuel Processing Technology Y1 - 2008/04// VL - 89 IS - 4 M3 - Article SP - 364 EP - 378 SN - 03783820 AB - Abstract: A candidate coal-based jet fuel that would serve the dual purpose of providing propulsion energy and excellent heat-sink capabilities was produced at pilot-plant scale by hydrotreating a 1:1 mixture of coal-derived refined chemical oil and petroleum-derived light cycle oil. The fuel was characterized using current specification methods for JP-8 fuel. Oxidative and pyrolytic thermal stability tests were conducted. Combustion tests were performed in a model high-pressure gas turbine combustor and in a T-63 turboshaft engine. Low-temperature viscosity properties and O-ring swelling were also evaluated. The candidate coal-based fuel meets most JP-8 specifications, although a few results were outside the current specification limits. The major hydrocarbon class in the coal-based fuel is cycloalkanes (e.g. decalin and its derivatives), which accounts for this fuel being significantly more dense than JP-8. The higher density could be of importance for volume-limited applications in aircraft and missiles. The candidate coal-based fuel showed excellent thermal stability, better than a JP-8 containing the currently qualified JP-8+100 additive package. In the model combustor, soot formation characteristics were essentially identical to JP-8; in the T-63 engine, the overall emissions produced were only slightly greater than from a typical JP-8. The candidate coal-based fuel appears to remain a single-phase liquid down to −70 °C, desirable behavior for long-duration, high-altitude flights. The coal-based fuel has the same swelling characteristics for nitrile O-rings as does JP-8. [Copyright &y& Elsevier] AB - Copyright of Fuel Processing Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUEL KW - Jet planes KW - Cycloalkanes KW - Nitriles KW - Propulsion systems KW - Combustion KW - Jet fuel KW - Stability KW - Viscosity N1 - Accession Number: 31401193; Balster, Lori M. 1; Corporan, Edwin 2; DeWitt, Matthew J. 1; Edwards, J. Timothy 2; Ervin, Jamie S. 1; Graham, John L. 1; Lee, Seong-Young 3; Pal, Sibtosh 3; Phelps, Donald K. 2; Rudnick, Leslie R. 4; Santoro, Robert J. 3,4; Schobert, Harold H. 4; Email Address: Schobert@ems.psu.edu; Shafer, Linda M. 1; Striebich, Richard C. 1; West, Zachary J. 1; Wilson, Geoffrey R. 5; Woodward, Roger 3; Zabarnick, Steven 1; Affiliations: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0116, USA; 2: Air Force Research Laboratory, Propulsion Directorate, AFRL/PRTG Building 490, 1790 Loop Road N, Wright-Patterson Air Force Base, OH 45433-7103, USA; 3: Propulsion Engineering Research Center, The Pennsylvania State University, University Park, PA 16802, USA; 4: The Energy Institute, The Pennsylvania State University, University Park, PA 16802, USA; 5: PARC Technical Services, 100 William Pitt Way, Harmarville, PA 15238, USA; Issue Info: Apr2008, Vol. 89 Issue 4, p364; Thesaurus Term: FUEL; Subject Term: Jet planes; Subject Term: Cycloalkanes; Subject Term: Nitriles; Subject Term: Propulsion systems; Author-Supplied Keyword: Combustion; Author-Supplied Keyword: Jet fuel; Author-Supplied Keyword: Stability; Author-Supplied Keyword: Viscosity; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.fuproc.2007.11.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=31401193&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 105764113 T1 - A comparison of tactile, visual, and auditory warnings for rear-end collision prevention in simulated driving. AU - Scott JJ AU - Gray R AU - Scott, J J AU - Gray, Robert Y1 - 2008/04// N1 - Accession Number: 105764113. Language: English. Entry Date: 20080711. Revision Date: 20170228. Publication Type: journal article; research. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Psychiatry/Psychology. NLM UID: 0374660. KW - Accidents, Traffic -- Prevention and Control KW - Automobile Driving -- Psychosocial Factors KW - Motor Vehicles -- Standards KW - Protective Devices KW - User-Computer Interface KW - Adult KW - Attention KW - Auditory Perception KW - Computer Simulation KW - Equipment Design KW - Female KW - Male KW - Reaction Time KW - Touch KW - Visual Perception SP - 264 EP - 275 JO - Human Factors JF - Human Factors JA - HUM FACTORS VL - 50 IS - 2 PB - Sage Publications Inc. AB - Objective: This study examined the effectiveness of rear-end collision warnings presented in different sensory modalities as a function of warning timing in a driving simulator.Background: The proliferation of in-vehicle information and entertainment systems threatens driver attention and may increase the risk of rear-end collisions. Collision warning systems have been shown to improve inattentive and/or distracted driver response time (RT) in rear-end collision situations. However, most previous rear-end collision warning research has not directly compared auditory, visual, and tactile warnings.Method: Sixteen participants in a fixed-base driving simulator experienced four warning conditions: no warning, visual, auditory, and tactile. The warnings activated when the time-to-collision (TTC) reached a critical threshold of 3.0 or 5.0 s. Driver RT was captured from a warning below critical threshold to brake initiation.Results: Drivers with a tactile warning had the shortest mean RT. Drivers with a tactile warning had significantly shorter RT than drivers without a warning and had a significant advantage over drivers with visual warnings.Conclusion: Tactile warnings show promise as effective rear-end collision warnings.Application: The results of this study can be applied to the future design and evaluation of automotive warnings designed to reduce rear-end collisions. SN - 0018-7208 AD - United States Air Force, Edwards Air Force Base, California, USA U2 - PMID: 18516837. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105764113&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - McInroy, John E. AU - Robertson, Lawrence M. AU - Erwin, R. Scott T1 - Autonomous Distant Visual Silhouetting of Satellites. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2008/04// VL - 44 IS - 2 M3 - Article SP - 801 EP - 808 SN - 00189251 AB - This paper develops a new technique useful for the autonomous distant visual silhouetting of satellites. New statistical straight line snakes (SSLS) prove efficient in finding the silhouette, even in the unilluminated case. The silhouette is composed of straight line segments, which are easy to calculate, fit the straight lines inherent in man-made objects, and lend themselves to further processing (pose estimation, template matching, etc.) Simulations illustrate the technique on images obtained when viewing low Earth orbit satellites from the ground. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARTIFICIAL satellites KW - INFORMATION processing KW - SILHOUETTES KW - TEMPLATE matching (Digital image processing) KW - PATTERN recognition systems KW - DIGITAL image processing N1 - Accession Number: 33542929; McInroy, John E. 1; Email Address: mcinroy@uwyo.edu; Robertson, Lawrence M. 2; Erwin, R. Scott 2; Affiliations: 1: Dept. of Electrical and Computer Engineering, University of Wyoming, 1000 E. University Ave., Laramie, WY 82071; 2: Air Force Research Laboratory, Space Vehicles Directorate, AFRL/VSSV, Kirtland AFB, NM 87117-5776; Issue Info: Apr2008, Vol. 44 Issue 2, p801; Thesaurus Term: ARTIFICIAL satellites; Thesaurus Term: INFORMATION processing; Subject Term: SILHOUETTES; Subject Term: TEMPLATE matching (Digital image processing); Subject Term: PATTERN recognition systems; Subject Term: DIGITAL image processing; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 8p; Illustrations: 8 Diagrams; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=33542929&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Kirawanich, Phumin AU - Yakura, Susumu J. AU - Islam, Naz E. T1 - Simulating Large Electrical Systems for Wideband Pulse Interactions Using the Topological Modular Junction Concept. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2008/04//Apr2008 Part 1 of 2 Y1 - 2008/04//Apr2008 Part 1 of 2 VL - 36 IS - 2 M3 - Article SP - 435 EP - 442 SN - 00933813 AB - Experiment and electromagnetic-topology (EMT)-based simulation are performed to study the effects of wideband EM pulses on large electrical systems. The EMT simulation relies on the topological modular junction concept with the simultaneous use of a number of analytical and computational methods, including the transmission-line-matrix compaction method, the finite-difference time-domain method, and the reciprocity theorem, to come up with a final result. The EMT simulation approach that uses the topological modular concept is an effective way to perform tradeoff analysis of different wideband pulse excitations without having to repeat the simulations of the entire system. As part of validating the EMT simulation approach, we performed the experiment to measure the current induced by a wideband EM pulse on a cable behind a slot aperture. The simulated current and the measured current resulted in good agreement with each other, thus demonstrating the validity of the proposed simulation scheme. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC theory KW - SIMULATION methods & models KW - BROADBAND communication systems KW - SYNTHETIC apertures KW - MATHEMATICAL analysis KW - SYSTEMS design -- Evaluation KW - TOPOLOGICAL dynamics KW - FINITE element method KW - HIGH technology -- Research N1 - Accession Number: 31744445; Source Information: Apr2008 Part 1 of 2, Vol. 36 Issue 2, p435; Subject Term: ELECTROMAGNETIC theory; Subject Term: SIMULATION methods & models; Subject Term: BROADBAND communication systems; Subject Term: SYNTHETIC apertures; Subject Term: MATHEMATICAL analysis; Subject Term: SYSTEMS design -- Evaluation; Subject Term: TOPOLOGICAL dynamics; Subject Term: FINITE element method; Subject Term: HIGH technology -- Research; Subject Term: ; Number of Pages: 8p; ; Illustrations: 6 Graphs; ; Document Type: Article; L3 - 10.1109/TPS.2008.918767 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=31744445&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Chen, P. AU - Markow, J. S. AU - Wicks, M. C. T1 - Likelihood ratio test-based interval estimate of the number of signals present in a measurement. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2008/04// VL - 2 IS - 2 M3 - Article SP - 111 EP - 120 SN - 17518784 AB - A multi-step procedure is proposed to construct a confidence interval for the number of signals present and a comparative analysis of our procedure with other existing procedures is conducted. The proposed procedure uses likelihood ratio statistics and its simulated percentiles sequentially to determine the upper and lower limits for the confidence interval. A preference zone in the parameter space of the population eigenvalues is defined and it is used to separate the signals and the noise. The least favourable configuration (LFC) is derived asymptotically under the preference zone. Under the LFC, the procedure parameters necessary to attain the required confidence level are determined. A comparative analysis with other procedures is presented in tables. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STATISTICS KW - STATISTICAL hypothesis testing KW - CONFIDENCE intervals KW - SIGNALS & signaling KW - COMPARATIVE studies KW - EIGENVALUES KW - NOISE N1 - Accession Number: 31176155; Chen, P. 1; Email Address: pinchen@syr.edu; Markow, J. S. 2; Wicks, M. C. 3; Affiliations: 1: Department of Mathematics, Syracuse University, Syracuse, NY 13244-1150, USA; 2: Radar Signal Processing Branch, Air Force Research Laboratory, Rome, NY 13441-4514, USA; 3: Sensors Directorate, Air Force Research Laboratory, Rome, NY 13441-4514, USA; Issue Info: Apr2008, Vol. 2 Issue 2, p111; Thesaurus Term: STATISTICS; Thesaurus Term: STATISTICAL hypothesis testing; Subject Term: CONFIDENCE intervals; Subject Term: SIGNALS & signaling; Subject Term: COMPARATIVE studies; Subject Term: EIGENVALUES; Subject Term: NOISE; Number of Pages: 10p; Illustrations: 7 Charts, 4 Graphs; Document Type: Article L3 - 10.1049/iet-rsn:20060050 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=31176155&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Forester, Joseph P. AU - Ong, Bruce A. AU - Fallot, André T1 - Can Equal Access to Care Eliminate Racial Disparities in Pediatric Asthma Outcomes? JO - Journal of Asthma JF - Journal of Asthma Y1 - 2008/04// VL - 45 IS - 3 M3 - Article SP - 211 EP - 214 SN - 02770903 AB - A survey was given to the parents of 80 children with asthma between the ages of 3 and 18 years at the Pediatric Pulmonology Clinics of three military treatment facilities to evaluate asthma management and outcomes for different racial groups. Results demonstrated that management practices for the three groups were similar and that there were no significant differences in emergency department visits, prescription of oral steroids, or in the number of hospitalizations across the three groups. These findings suggest that equal access to care may allow children of different racial backgrounds to receive similar asthma care and achieve similar outcomes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Asthma is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASTHMA in children KW - ALLERGY in children KW - HEALTH services accessibility KW - ASTHMATICS KW - EMERGENCY medical services KW - ASTHMA KW - asthma KW - ethnicity KW - health care KW - Military Health System KW - minority N1 - Accession Number: 31657127; Forester, Joseph P. 1; Email Address: joseph.forester@usafa.af.mil; Ong, Bruce A. 2; Fallot, André 3; Source Information: Apr2008, Vol. 45 Issue 3, p211; Subject: ASTHMA in children; Subject: ALLERGY in children; Subject: HEALTH services accessibility; Subject: ASTHMATICS; Subject: EMERGENCY medical services; Subject: ASTHMA; Author-Supplied Keyword: asthma; Author-Supplied Keyword: ethnicity; Author-Supplied Keyword: health care; Author-Supplied Keyword: Military Health System; Author-Supplied Keyword: minority; Number of Pages: 4p; Illustrations: 3 Charts; Document Type: Article L3 - 10.1080/02770900801890448 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=31657127&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Gray, R. AU - Geri, G. A. AU - Akhtar, S. C. AU - Covas, C. M. T1 - The Role of Visual Occlusion in Altitude Maintenance During Simulated Flight. JO - Journal of Experimental Psychology. Human Perception & Performance JF - Journal of Experimental Psychology. Human Perception & Performance Y1 - 2008/04// VL - 34 IS - 2 M3 - Article SP - 475 EP - 488 SN - 00961523 AB - The use of visual occlusion as a cue to altitude maintenance in low-altitude flight (LAF) was investigated. The extent to which the ground surface is occluded by 3-D objects varies with altitude and depends on the height, radius, and density of the objects. Participants attempted to maintain a constant altitude during simulated flight over an undulating terrain with trees of various heights, radii, and densities. As would be predicted if participants used occlusion, root-mean-square error was related to the product of tree height and tree density (Experiment 1) and to the product of tree radius and tree density (Experiment 2). This relationship was also found for simulated terrains with a more realistic mixture of tree heights (Experiment 4). The authors present a modification to an occlusion model (T. Leung & J. Malik, 1997) that can be used to approximate occlusion in the context of LAF, and they evaluate the modified model using the present LAF data. On a practical level, simulating 3-D objects is computationally expensive. The present results suggest that performance may be maintained with fewer objects if their size is increased. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Experimental Psychology. Human Perception & Performance is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PSYCHOLOGY KW - AERONAUTICS KW - FLIGHT KW - PERCEPTION KW - ALTITUDES KW - aviation KW - perception and action KW - simulation KW - visual occlusion N1 - Accession Number: 74756356; Gray, R. 1,2; Email Address: robgray@asu.edu; Geri, G. A. 2; Akhtar, S. C. 3; Covas, C. M. 1,4; Affiliations: 1: Arizona State University and Link Simulation and Training; 2: Link Simulation and Training; 3: The Boeing Co.; 4: Air Force Research Laboratory; Issue Info: Apr2008, Vol. 34 Issue 2, p475; Subject Term: PSYCHOLOGY; Subject Term: AERONAUTICS; Subject Term: FLIGHT; Subject Term: PERCEPTION; Subject Term: ALTITUDES; Author-Supplied Keyword: aviation; Author-Supplied Keyword: perception and action; Author-Supplied Keyword: simulation; Author-Supplied Keyword: visual occlusion; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; Number of Pages: 14p; Illustrations: 5 Diagrams, 8 Graphs; Document Type: Article L3 - 10.1037/0096-1523.34.2.475 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=74756356&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Chulho Yang AU - Adams, Douglas E. AU - Derriso, Mark AU - Gordon, Grant T1 - Structural Damage Identification in a Mechanically Attached Metallic Panel Using Embedded Sensitivity Functions. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2008/04// VL - 19 IS - 4 M3 - Article SP - 475 EP - 485 SN - 1045389X AB - A vibration-based structural damage identification method is discussed using experimental embedded sensitivity functions, which are algebraic combinations of measured frequency response functions (FRFs) that reflect changes in the response of mechanical systems when mass, damping, or stiffness parameters are changed. The theory of embedded sensitivity functions is reviewed and applied to identify damage in simulations with a six degree-of-freedom model of a metallic panel and in experiments on the actual panel. Measured FRFs, before and after simulated damage is imposed, are compared to an experimental sensitivity function. By matching the spectral shapes of these two sets of functions, damage is first located and classified as changes in stiffness, damping, or mass. Then the damage is quantified directly in engineering units as changes in stiffness or mass using only the measured data. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VIBRATION (Mechanics) KW - STRUCTURAL dynamics KW - STRUCTURAL analysis (Engineering) KW - FREQUENCIES of oscillating systems KW - DAMPING (Mechanics) KW - damage detection KW - embedded sensitivity function KW - structural health monitoring N1 - Accession Number: 31609133; Chulho Yang 1; Adams, Douglas E. 1; Email Address: deadains@ecn.purdue.edu; Derriso, Mark 2; Gordon, Grant 3; Affiliations: 1: Ray W. Herrick Laboratories, School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA; 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; 3: Honeywell, Inc., Phoenix, AZ 85027, USA; Issue Info: Apr2008, Vol. 19 Issue 4, p475; Subject Term: VIBRATION (Mechanics); Subject Term: STRUCTURAL dynamics; Subject Term: STRUCTURAL analysis (Engineering); Subject Term: FREQUENCIES of oscillating systems; Subject Term: DAMPING (Mechanics); Author-Supplied Keyword: damage detection; Author-Supplied Keyword: embedded sensitivity function; Author-Supplied Keyword: structural health monitoring; Number of Pages: 11p; Illustrations: 5 Diagrams, 3 Charts, 13 Graphs; Document Type: Article L3 - 10.1177/1045389X06076187 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=31609133&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Noel, Julien G. AU - Bogozi, Albert AU - Vlasov, Yuriy A. AU - Larkins Jr, Grover L. T1 - Cryogenic Pull-Down Voltage of Microelectromechanical Switches. JO - Journal of Microelectromechanical Systems JF - Journal of Microelectromechanical Systems J1 - Journal of Microelectromechanical Systems PY - 2008/04// Y1 - 2008/04// VL - 17 IS - 2 M3 - Article SP - 351 EP - 355 SN - 10577157 AB - Capacitively shunted microelectromechanical (MEM) switches were designed, fabricated and tested in an earlier work. The switch is composed of a coplanar waveguide (CPW) structure with an Au bridge membrane suspended above a center conductor covered with a BaTiO3 dielectric. The membrane is actuated by electrostatic force acting between the center conductor of the CPW and the membrane when a voltage is applied. We have noted that pull-down voltages for MEM switches always demonstrate an extremely strong temperature dependence when actuated at cryogenic temperature. This paper improves the pull-down voltage prediction of MEM switches at cryogenic temperature using the mechanical properties of the bridge, thin film and substrate materials used in the switch. The theoretical and experimental results of the actuation voltages of these structures as a function of temperature are presented and compared. [2007-0235] [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microelectromechanical Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTROMECHANICAL systems KW - WAVEGUIDES KW - THIN films -- Mechanical properties KW - SOLID state electronics KW - SURFACE coatings KW - LOW temperature engineering KW - VOLTAGE regulators N1 - Accession Number: 31800960; Source Information: Apr2008, Vol. 17 Issue 2, p351; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: WAVEGUIDES; Subject Term: THIN films -- Mechanical properties; Subject Term: SOLID state electronics; Subject Term: SURFACE coatings; Subject Term: LOW temperature engineering; Subject Term: VOLTAGE regulators; Subject Term: ; Number of Pages: 5p; ; Illustrations: 2 Diagrams, 2 Charts, 2 Graphs; ; Document Type: Article; L3 - 10.1109/JMEMS.2008.918404 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=31800960&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Corporan, Edwin AU - Quick, Adam AU - DeWitt, Matthew J. T1 - Characterization of Particulate Matter and Gaseous Emissions of a C-130H Aircraft. JO - Journal of the Air & Waste Management Association (Air & Waste Management Association) JF - Journal of the Air & Waste Management Association (Air & Waste Management Association) Y1 - 2008/04// VL - 58 IS - 4 M3 - Article SP - 474 EP - 483 PB - Air & Waste Management Association SN - 10962247 AB - The gaseous and nonvolatile particulate matter (PM) emissions of two T56-A-15 turboprop engines of a C-130H aircraft stationed at the 123rd Airlift Wing in the Kentucky Air National Guard were characterized. The emissions campaign supports the Strategic Environmental Research and Development Program (SERDP) project WP-1401 to determine emissions factors from military aircraft. The purpose of the project is to develop a comprehensive emissions measurement program using both conventional and advanced techniques to determine emissions factors of pollutants, and to investigate the spatial and temporal evolutions of the exhaust plumes from fixed and rotating wing military aircraft. Standard practices for the measurement of gaseous emissions from aircraft have been well established; however, there is no certified methodology for the measurement of aircraft PM emissions. In this study, several conventional instruments were used to physically characterize and quantify the PM emissions from the two turboprop engines. Emissions samples were extracted from the engine exit plane and transported to the analytical instrumentation via heated lines. Multiple sampling probes were used to assess the spatial variation and obtain a representative average of the engine emissions. Particle concentrations, size distributions, and mass emissions were measured using commercially available aerosol instruments. Engine smoke numbers were determined using established Society of Automotive Engineers (SAE) practices, and gaseous species were quantified via a Fourier-transform infraredbased gas analyzer. The engines were tested at five power settings, from idle to take-off power, to cover a wide range of operating conditions. Average corrected particle numbers (PNs) of (6.4 -14.3) x 107 particles per cm³ and PN emission indices (EI) from 3.5 x 1015 to 10.0 x 1015 particles per kg-fuel were observed. The highest PN EI were observed for the idle power conditions. The mean particle diameter varied between 50 nm at idle to 70 nm at maximum engine power. PM mass EI ranged from 1.6 to 3.5 g/kg-fuel for the conditions tested, which are in agreement with previous T56 engine measurements using other techniques. Additional PM data, smoke numbers, and gaseous emissions will be presented and discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Air & Waste Management Association (Air & Waste Management Association) is the property of Air & Waste Management Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Particulate matter KW - Air pollution KW - Pollutants KW - Airplanes KW - United States. Air National Guard KW - United States N1 - Accession Number: 31613879; Corporan, Edwin 1; Quick, Adam 1; DeWitt, Matthew J. 2; Affiliations: 1: U.S. Air Force Research Laboratory, Propulsion Directorate, Wright Patterson Air Force Base, OH; 2: University of Dayton Research Institute, Dayton, OH; Issue Info: Apr2008, Vol. 58 Issue 4, p474; Thesaurus Term: Particulate matter; Thesaurus Term: Air pollution; Thesaurus Term: Pollutants; Subject Term: Airplanes; Subject Term: United States. Air National Guard; Subject: United States; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 10p; Illustrations: 6 Black and White Photographs, 3 Charts, 6 Graphs; Document Type: Article L3 - 10.3155/1047-3289.58.4.474 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=31613879&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 105748978 T1 - Developing evidence-based nursing roles: lessons learned from the health care integrator role. AU - Hatzfeld JJ Y1 - 2008/04//Apr-Jun2008 N1 - Accession Number: 105748978. Language: English. Entry Date: 20080627. Revision Date: 20150818. Publication Type: Journal Article; research; tables/charts. Journal Subset: Blind Peer Reviewed; Core Nursing; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Nursing; Peer Reviewed; USA. Special Interest: Evidence-Based Practice. NLM UID: 0401006. KW - Military Medicine KW - Military Nursing KW - Nursing Practice, Evidence-Based KW - Nursing Role KW - Quality Improvement -- Methods KW - Quality of Health Care KW - Descriptive Research KW - Female KW - Male KW - Program Implementation KW - Quantitative Studies KW - Questionnaires KW - Surveys KW - Task Performance and Analysis KW - United States Air Force KW - Human SP - 72 EP - 79 JO - Nursing Forum JF - Nursing Forum JA - NURS FORUM VL - 43 IS - 2 CY - Malden, Massachusetts PB - Wiley-Blackwell AB - TOPIC. Developing evidence-based nursing roles. PURPOSE. This study examined a unique nursing role in the United States Air Force to determine if it had been well institutionalized and to identify barriers and facilitators during the implementation process. SOURCE OF INFORMATION. Individuals functioning in the role were surveyed to measure time spent on specific job-related tasks, additional duties, and positive and negative experiences. CONCLUSIONS. Eighty-seven percent of the respondents (n = 45) indicated that the role had been well implemented, although wide variation existed in tasks performed and major organizational barriers identified. Findings of this study can be used to guide the development of other evidence-based positions. SN - 0029-6473 AD - United States Air Force, and Johns Hopkins University, USA. U2 - PMID: 18447892. DO - 10.1111/j.1744-6198.2008.00098.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105748978&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Hatzfeld, Jennifer J. T1 - Developing Evidence-Based Nursing Roles: Lessons Learned From the Health Care Integrator Role. JO - Nursing Forum JF - Nursing Forum Y1 - 2008/04//Apr-Jun2008 VL - 43 IS - 2 M3 - Article SP - 72 EP - 79 SN - 00296473 AB - TOPIC. Developing evidence-based nursing roles. PURPOSE. This study examined a unique nursing role in the United States Air Force to determine if it had been well institutionalized and to identify barriers and facilitators during the implementation process. SOURCE OF INFORMATION. Individuals functioning in the role were surveyed to measure time spent on specific job-related tasks, additional duties, and positive and negative experiences. CONCLUSIONS. Eighty-seven percent of the respondents (n =  45) indicated that the role had been well implemented, although wide variation existed in tasks performed and major organizational barriers identified. Findings of this study can be used to guide the development of other evidence-based positions. [ABSTRACT FROM AUTHOR] AB - Copyright of Nursing Forum is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EVIDENCE-based nursing KW - UNITED States. Air Force KW - NURSING KW - ROLES (Social aspects) KW - TASKS KW - UNITED States KW - Evidence-based nursing KW - implementation KW - nursing role N1 - Accession Number: 31790982; Hatzfeld, Jennifer J. 1,2; Source Information: Apr-Jun2008, Vol. 43 Issue 2, p72; Subject: EVIDENCE-based nursing; Subject: UNITED States. Air Force; Subject: NURSING; Subject: ROLES (Social aspects); Subject: TASKS; Geographic Terms: UNITED States; Author-Supplied Keyword: Evidence-based nursing; Author-Supplied Keyword: implementation; Author-Supplied Keyword: nursing role; Number of Pages: 8p; Illustrations: 1 Chart, 1 Graph; Document Type: Article L3 - 10.1111/j.1744-6198.2008.00098.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=31790982&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 2008-05854-008 AN - 2008-05854-008 AU - Scott, J. J. AU - Gray, Robert T1 - A comparison of tactile, visual, and auditory warnings for rear-end collision prevention in simulated driving. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2008/04// VL - 50 IS - 2 SP - 264 EP - 275 CY - US PB - Human Factors & Ergonomics Society SN - 0018-7208 SN - 1547-8181 AD - Scott, J. J., 4400 Stetson Ave., Rosamond, CA, US, 93560 N1 - Accession Number: 2008-05854-008. PMID: 18516837 Partial author list: First Author & Affiliation: Scott, J. J.; United States Air Force, Edwards Air Force Base, CA, US. Other Publishers: Sage Publications. Release Date: 20080602. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Grant Information: Gray, Robert. Major Descriptor: Accident Prevention; Driving Behavior; Motor Traffic Accidents; Reaction Time; Warnings. Minor Descriptor: Auditory Perception; Drivers; Evaluation; Simulation; Tactual Perception; Visual Perception. Classification: Transportation (4090). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: Apr, 2008. AB - Objective: This study examined the effectiveness of rear-end collision warnings presented in different sensory modalities as a function of warning timing in a driving simulator. Background: The proliferation of in-vehicle information and entertainment systems threatens driver attention and may increase the risk of rear-end collisions. Collision warning systems have been shown to improve inattentive and/or distracted driver response time (RT) in rear-end collision situations. However, most previous rear-end collision warning research has not directly compared auditory, visual, and tactile warnings. Method: Sixteen participants in a fixed-base driving simulator experienced four warning conditions: no warning, visual, auditory, and tactile. The warnings activated when the time-to-collision (TTC) reached a critical threshold of 3.0 or 5.0 s. Driver RT was captured from a warning below critical threshold to brake initiation. Results: Drivers with a tactile warning had the shortest mean RT. Drivers with a tactile warning had significantly shorter RT than drivers without a warning and had a significant advantage over drivers with visual warnings. Conclusion: Tactile warnings show promise as effective rear-end collision warnings. Application: The results of this study can be applied to the future design and evaluation of automotive warnings designed to reduce rear-end collisions. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - tactile warning KW - visual warning KW - auditory warnings KW - rear-end collision prevention KW - simulated driving KW - automotive warnings KW - 2008 KW - Accident Prevention KW - Driving Behavior KW - Motor Traffic Accidents KW - Reaction Time KW - Warnings KW - Auditory Perception KW - Drivers KW - Evaluation KW - Simulation KW - Tactual Perception KW - Visual Perception KW - 2008 U1 - Sponsor: National Science Foundation, Information and Intelligent Systems Program. Grant: 0533908. Other Details: Award. Recipients: Gray, Robert U1 - Sponsor: United States Air Force Institute of Technology, US. Recipients: Scott, J. J. DO - 10.1518/001872008X250674 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-05854-008&site=ehost-live&scope=site UR - jeffrey.scott@edwards.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 105764134 T1 - Effects of low-level radio-frequency (3kHz to 300GHz) energy on human cardiovascular, reproductive, immune, and other systems: a review of the recent literature. AU - Jauchem JR Y1 - 2008/03/12/ N1 - Accession Number: 105764134. Language: English. Entry Date: 20080711. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Biomedical; Blind Peer Reviewed; Continental Europe; Editorial Board Reviewed; Europe; Expert Peer Reviewed; Peer Reviewed; Public Health. Special Interest: Public Health. NLM UID: 100898843. KW - Electromagnetic Fields -- Adverse Effects KW - Radio Waves -- Adverse Effects KW - Cardiovascular System -- Radiation Effects KW - Epidemiology KW - Immune System -- Radiation Effects KW - Microwaves -- Adverse Effects KW - Reproduction SP - 1 EP - 29 JO - International Journal of Hygiene & Environmental Health JF - International Journal of Hygiene & Environmental Health JA - INT J HYG ENVIRON HEALTH VL - 211 IS - 1/2 CY - London, PB - Elsevier GmbH, Urban & Fischer Verlag SN - 1438-4639 AD - Air Force Research Laboratory, Directed Energy Bioeffects Division, Radio Frequency Radiation Branch, San Antonio, TX 78235-5147, USA; james.jauchem@brooks.af.mil U2 - PMID: 17692567. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105764134&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Duford, Jeff T1 - THE THINGS WE ARE: AIR FORCE HERITAGE AND HISTORY IN ARTIFACTS. JO - Air Power History JF - Air Power History Y1 - 2008///Spring2008 VL - 55 IS - 1 M3 - Article SP - 4 EP - 15 SN - 1044016X AB - Describes ten of the 103,400 artifacts at the National Museum of the US Air Force. The collection includes a coal briquette found in a C-54 transport from the Berlin airlift, the 'Gee Whizz' test sled operated by John Stapp in determining g-forces, and the nose art of the 'Memphis Belle' B-17 and its replication on the B-52 'Memphis Belle III.' Artifacts at the museum range in scope from Civil War balloon fabric to the B-36J Peacemaker and embody the stories of the people who have served in the US Air Force. The artifacts are provided to Air Force field museums and other accredited institutions. KW - ANTIQUITIES KW - BRIQUETS KW - LEATHER jackets KW - AIR forces KW - MUSEUMS KW - UNITED States KW - National Museum of the US Air Force KW - UNITED States. Air Force N1 - Accession Number: 31331309; Duford, Jeff 1; Affiliations: 1 : National Museum, United States Air Force; Source Info: Spring2008, Vol. 55 Issue 1, p4; Note: 26 photos, 25 notes.; Historical Period: 1860 to 2006; Subject Term: ANTIQUITIES; Subject Term: BRIQUETS; Subject Term: LEATHER jackets; Subject Term: AIR forces; Subject Term: MUSEUMS; Subject: UNITED States; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ahl&AN=31331309&site=ehost-live&scope=site DP - EBSCOhost DB - ahl ER - TY - JOUR AU - Pomer, Steven A. T1 - Shadow and Stinger: Developing the AC-119G/K Gunships in the Vietnam war. JO - Air Power History JF - Air Power History J1 - Air Power History PY - 2008///Spring2008 Y1 - 2008///Spring2008 VL - 55 IS - 1 M3 - Book Review SP - 50 EP - 50 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "Shadow and Stinger: Developing the AC-119G/K Gunships in the Vietnam War," by William P. Head. KW - SHADOW & Stinger: Developing the AC-119G/K Gunships in the Vietnam War (Book) KW - HEAD, William P. KW - GUNSHIPS (Military aircraft) KW - NONFICTION N1 - Accession Number: 31331317; Source Information: Spring2008, Vol. 55 Issue 1, p50; Subject Term: SHADOW & Stinger: Developing the AC-119G/K Gunships in the Vietnam War (Book); Subject Term: HEAD, William P.; Subject Term: GUNSHIPS (Military aircraft); Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3/4p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=31331317&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Debany Jr., Warren H. T1 - Modeling the Spread of Internet Worms via Persistently Unpatched Hosts. JO - IEEE Network JF - IEEE Network Y1 - 2008/03//Mar/Apr2008 VL - 22 IS - 2 M3 - Article SP - 26 EP - 32 SN - 08908044 AB - The article discusses computer worms and malwares and their effects on internet hosts. It is mentioned that self propagation of worms are obtained through heterogenous population of unpatched hosts. Also, worm self-propagation is caused by refreshed vulnerable hosts. According to the author, internet worms and other malware will continue to exist due to the persistent and continuous refreshing of unpatched hosts. He explains that although non-vulnerable hosts are refreshed and repaired, hosts still remain prone to computer worms. KW - MALWARE (Computer software) KW - COMPUTER viruses KW - COMPUTER systems KW - COMPUTER security KW - DATA protection KW - INTERNET KW - COMPUTER worms KW - MAINTENANCE & repair KW - SOFTWARE maintenance N1 - Accession Number: 31654531; Debany Jr., Warren H. 1; Affiliations: 1: Air Force Research Laboratory; Issue Info: Mar/Apr2008, Vol. 22 Issue 2, p26; Thesaurus Term: MALWARE (Computer software); Thesaurus Term: COMPUTER viruses; Thesaurus Term: COMPUTER systems; Thesaurus Term: COMPUTER security; Thesaurus Term: DATA protection; Thesaurus Term: INTERNET; Subject Term: COMPUTER worms; Subject Term: MAINTENANCE & repair; Subject Term: SOFTWARE maintenance; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); NAICS/Industry Codes: 541512 Computer Systems Design Services; Number of Pages: 7p; Illustrations: 8 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=31654531&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Hansen, Thorkild B. AU - Marr, Richard A. AU - Hsia, Justin S. AU - Kim, Kristopher T. AU - Lammers, Uve H. W. AU - Perez, Jimmie J. AU - Tanigawa, Timothy J. T1 - Methods for Locating Stray-Signal Sources in Anechoic Chambers. JO - IEEE Transactions on Instrumentation & Measurement JF - IEEE Transactions on Instrumentation & Measurement J1 - IEEE Transactions on Instrumentation & Measurement PY - 2008/03// Y1 - 2008/03// VL - 57 IS - 3 M3 - Article SP - 480 EP - 489 SN - 00189456 AB - Two complementary numerically efficient frequency-domain methods for locating stray-signal sources in anechoic chambers are investigated and applied in combination to actual measurement data. Both methods use single-frequency near-field data collected on a planar surface and process them to reconstruct field values (images) elsewhere. The first method, which is based on the fact that the probe output satisfies the Helmholtz equation, uses plane waves to backpropagate the scan-plane data and is well suited for fast-Fourier-transform (FFT)-based rapid reconstruction of images on planar surfaces parallel to the scan plane. The second method uses the simple spherical-wave focusing technique and is flexible, in that, it can be used to generate images on either planar or nonplanar surfaces from the data collected on either planar or nonplanar surfaces. When data and image points are both located on a regular grid, the method can be implemented using the FFT-based fast convolution technique. Both methods include a spatial filter for isolating selected plane-wave spectrum components. The two methods are used in combination to successfully locate the strong multiple-bounce stray signals that degrade the quiet zone of a near-field bistatic radar cross-section facility. Subsequent scan data confirm that the suppression of these stray signals indeed substantially improves the quality of the quiet zone. The spherical-focusing method is also used to evaluate the effectiveness of the various absorber configurations applied to selected edges of the reflector to control edge-diffracted fields. It is shown that the reduction of the edge-diffracted fields further improves the quiet zone. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Instrumentation & Measurement is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANECHOIC chambers KW - ABSORPTION of sound KW - ACOUSTICAL engineering KW - HELMHOLTZ equation KW - ELLIPTIC differential equations KW - RADAR N1 - Accession Number: 30001167; Source Information: Mar2008, Vol. 57 Issue 3, p480; Subject Term: ANECHOIC chambers; Subject Term: ABSORPTION of sound; Subject Term: ACOUSTICAL engineering; Subject Term: HELMHOLTZ equation; Subject Term: ELLIPTIC differential equations; Subject Term: RADAR; Subject Term: ; Number of Pages: 10p; ; Illustrations: 2 Diagrams, 12 Graphs; ; Document Type: Article; L3 - 10.1109/TIM.2007.911574 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=30001167&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Termier, Alexandre AU - Rousset, Marie-Christine AU - Sebag, Michële AU - Ohara, Kouzou AU - Washio, Takashi AU - Motoda, Hiroshi T1 - DRYADEPARENT, An Efficient and Robust Closed Attribute Tree Mining Algorithm. JO - IEEE Transactions on Knowledge & Data Engineering JF - IEEE Transactions on Knowledge & Data Engineering J1 - IEEE Transactions on Knowledge & Data Engineering PY - 2008/03// Y1 - 2008/03// VL - 20 IS - 3 M3 - Article SP - 300 EP - 320 SN - 10414347 AB - In this paper, we present a new tree mining algorithm, DryadeParent, based on the hooking principle first introduced in Dryade. In the experiments, we demonstrate that the branching factor and depth of the frequent patterns to find are key factors of complexity for tree mining algorithms, even if often overlooked in previous work. We show that DryadeParent outperforms the current fastest algorithm, CMTreeMiner, by orders of magnitude on datasets where the frequent patterns have a high branching factor. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Knowledge & Data Engineering is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DATA mining KW - DATABASE searching KW - CONTENT mining KW - ONLINE data processing KW - COMPUTER algorithms KW - ONLINE algorithms N1 - Accession Number: 30016250; Source Information: Mar2008, Vol. 20 Issue 3, p300; Subject Term: DATA mining; Subject Term: DATABASE searching; Subject Term: CONTENT mining; Subject Term: ONLINE data processing; Subject Term: COMPUTER algorithms; Subject Term: ONLINE algorithms; Subject Term: ; Number of Pages: 21p; ; Illustrations: 20 Diagrams, 1 Chart, 7 Graphs; ; Document Type: Article; L3 - 10.1109/TKDE.2007.190695 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=30016250&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Li Bai AU - Blasch, Erik T1 - Two-Way Handshaking Circular Sequential k-Out-of-n Congestion System. JO - IEEE Transactions on Reliability JF - IEEE Transactions on Reliability Y1 - 2008/03// VL - 57 IS - 1 M3 - Article SP - 59 EP - 70 SN - 00189529 AB - Many communication systems require a two-way, or three-way handshaking process to improve their dependability & authenticity in order to achieve a more successful operation. In this paper, we present a new two-way handshaking reliability model based upon (k, n) threshold-based cryptography systems. Such systems require a two-way handshaking process to i) establish a group of participated servers in the first handshaking process, and ii) calculate a cipher with k successfully connected servers collaboratively in the second handshaking process. When the servers are attempted, each server has three known connection probabilities in the following three states: i) successful, ii) breakdown, and iii) congested. These connection probabilities are unchanged in both handshaking processes. During the first handshaking process, we establish connections that more than k servers are willing to participate. For the second handshaking process, the system becomes successful as soon as we can connect these k servers successfully again. Because we need to connect k servers successfully in the second handshaking process, we would rather connect in additional servers besides the k servers required to be connected successfully in the first handshaking process. This preference will minimize the chance that the system breaks down when fewer than k servers can be reconnected successfully in the second handshaking process. We refer to this system as a Two- Way Handshaking Circular Sequential k-out-of-n Congestion (TWHCSknC) system. In this paper, we derived analytical formulas for the system's successful probability & average stop length, and we showed that the TWHCSknC system is a communication system with an efficient two-way handshaking process. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Reliability is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TELECOMMUNICATION systems KW - PROBABILITY theory KW - MATHEMATICAL statistics KW - HANDSHAKING KW - FAILURE time data analysis KW - Circular consecutive k-out-of-n:F system KW - circular sequential k-out-of-n congestion system KW - congestion KW - ternary state circular sequential k-out-of-n congestion system N1 - Accession Number: 31435742; Li Bai 1; Email Address: lbai@temple.edu; Blasch, Erik 2; Email Address: ErikBlasch@wpafb.af.mil; Affiliations: 1: Computer Fusion Laboratory in the Department of Electrical and Computer Engineering, Temple University, Philadelphia, PA 19122 USA; 2: Air Force Research Laboratory Sensor Directorate (AFRL/SN), OH 45433 USA; Issue Info: Mar2008, Vol. 57 Issue 1, p59; Thesaurus Term: TELECOMMUNICATION systems; Thesaurus Term: PROBABILITY theory; Thesaurus Term: MATHEMATICAL statistics; Subject Term: HANDSHAKING; Subject Term: FAILURE time data analysis; Author-Supplied Keyword: Circular consecutive k-out-of-n:F system; Author-Supplied Keyword: circular sequential k-out-of-n congestion system; Author-Supplied Keyword: congestion; Author-Supplied Keyword: ternary state circular sequential k-out-of-n congestion system; NAICS/Industry Codes: 517410 Satellite Telecommunications; Number of Pages: 12p; Illustrations: 2 Charts, 2 Graphs; Document Type: Article L3 - 10.1109/TR.2007.909771 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=31435742&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Hong, L. AU - Ruan, Y. AU - Li, W. AU - Wicker, D. AU - Layne, J. T1 - Energy-based video tracking using joint target density processing with an application to unmanned aerial vehicle surveillance. JO - IET Computer Vision JF - IET Computer Vision Y1 - 2008/03// VL - 2 IS - 1 M3 - Article SP - 1 EP - 12 SN - 17519632 AB - Successfully tracking targets in a video sequence has many important applications, including unmanned aerial vehicle (UAV) surveillance. A robust and efficient video tracking algorithm based on the continuous wavelet transform (CWT) is presented, which has been proven to be effective in capturing motion information over multiple frames and excellent in velocity selectivity. The CWT converts target trajectories in a spatio-temporal domain into target energy volumes in a wavenumber–frequency domain. By integrating over different motion parameters, three target energy densities are obtained, which then serve as cost functions for estimating target trajectories and sizes. Because of excellent velocity selectivity, the energy-based tracker has the capability of detecting and tracking targets with a particular velocity range. To best handle target interferences among multiple nearby or crossing targets, a novel joint processing technique using expectation-maximization-based Gaussian mixture estimation is developed. A global nearest neighbourhood algorithm is employed to perform data association and maintain continuous kinematic trajectories. In addition to computer simulations, the developed energy-based algorithm is applied to a UAV surveillance application where multiple vehicles move closely to each other on a multi-lane road. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Computer Vision is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - ARTIFICIAL satellite tracking KW - VIDEO recording KW - SURVEILLANCE detection KW - COMPUTER simulation N1 - Accession Number: 31376273; Hong, L. 1; Email Address: lang.hong@wright.edu; Ruan, Y. 1; Li, W. 1; Wicker, D. 2; Layne, J. 2; Affiliations: 1: Department of Electrical Engineering, Wright State University, Dayton, OH 45435, USA; 2: SNAT, Sensors Directorate, Air Force Research Laboratory, WPAFB, OH 45433, USA; Issue Info: Mar2008, Vol. 2 Issue 1, p1; Thesaurus Term: ALGORITHMS; Subject Term: ARTIFICIAL satellite tracking; Subject Term: VIDEO recording; Subject Term: SURVEILLANCE detection; Subject Term: COMPUTER simulation; NAICS/Industry Codes: 517910 Other telecommunications; NAICS/Industry Codes: 517919 All Other Telecommunications; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 12p; Illustrations: 7 Color Photographs, 1 Black and White Photograph, 5 Diagrams, 7 Graphs; Document Type: Article L3 - 10.1049/iet-cvi:20070017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=31376273&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Teeguarden, Justin G. AU - Bogdanffy, Matthew S. AU - Covington, Tammie R. AU - Tan, Cecilia AU - Jarabek, Annie M. T1 - A PBPK Model for Evaluating the Impact of Aldehyde Dehydrogenase Polymorphisms on Comparative Rat and Human Nasal Tissue Acetaldehyde Dosimetry. JO - Inhalation Toxicology JF - Inhalation Toxicology Y1 - 2008/03// VL - 20 IS - 4 M3 - Article SP - 375 EP - 390 SN - 08958378 AB - Acetaldehyde is an important intermediate in the chemical synthesis and normal oxidative metabolism of several industrially important compounds, including ethanol, ethyl acetate, and vinyl acetate. Chronic inhalation of acetaldehyde leads to degeneration of the olfactory and respiratory epithelium in rats at concentrations > 50 ppm (90 day exposure) and respiratory and olfactory nasal tumors at concentrations ≥ 750 ppm, the lowest concentration tested in the 2-yr chronic bioassay. Differences in the anatomy and biochemistry of the rodent and human nose, including polymorphisms in human high-affinity acetaldehyde dehydrogenase (ALDH2), are important considerations for interspecies extrapolations in the risk assessment of acetaldehyde. A physiologically based pharmacokinetic model of rat and human nasal tissues was constructed for acetaldehyde to support a dosimetry-based risk assessment for acetaldehyde (Dorman et al., 2008). The rodent model was developed using published metabolic constants and calibrated using upper-respiratory-tract acetaldehyde extraction data. The human nasal model incorporates previously published tissue volumes, blood flows, and acetaldehyde metabolic constants. ALDH2 polymorphisms were represented in the human model as reduced rates of acetaldehyde metabolism. Steady-state dorsal olfactory epithelial tissue acetaldehyde concentrations in the rat were predicted to be 409, 6287, and 12,634 μM at noncytotoxic (50 ppm), and cytotoxic/tumorigenic exposure concentrations (750 and 1500 ppm), respectively. The human equivalent concentration (HEC) of the rat no-observed-adverse-effect level (NOAEL) of 50 ppm, based on steady-state acetaldehyde concentrations from continual exposures, was 67 ppm. Respiratory and olfactory epithelial tissue acetaldehyde and H+ (pH) concentrations were largely linear functions of exposure in both species. The impact of presumed ALDH2 polymorphisms on human olfactory tissue concentrations was negligible; the high-affinity, low-capacity ALDH2 does not contribute significantly to acetaldehyde metabolism in the nasal tissues. The human equivalent acetaldehyde concentration for homozygous low activity was 66 ppm, 1.5% lower than for the homozygous full activity phenotype. The rat and human acetaldehyde PBPK models developed here can also be used as a bridge between acetaldehyde dose-response and mode-of-action data as well as between similar databases for other acetaldehyde-producing nasal toxicants. [ABSTRACT FROM AUTHOR] AB - Copyright of Inhalation Toxicology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Vinyl acetate KW - Aldehyde dehydrogenase KW - Metabolism KW - Aldehydes KW - Alcohol dehydrogenase KW - Blood circulation KW - Adenylic acid KW - Body fluid flow KW - Hemodynamics N1 - Accession Number: 30066825; Teeguarden, Justin G. 1; Email Address: justin.teeguarden@pnl.gov; Bogdanffy, Matthew S. 2; Covington, Tammie R. 3; Tan, Cecilia 4; Jarabek, Annie M. 5; Affiliations: 1: Biological Monitoring and Modeling, Pacific Northwest National Laboratory, Richland, Washington, USA.; 2: Boehringer Ingelheim Pharmaceuticals, Ridgefield, Connecticut, USA.; 3: Human Effectiveness Directorate, Air Force Research Laboratory, Wright Patterson AFB, Dayton, Ohio, USA.; 4: Hamner Institutes for Health Sciences, Research Triangle Park, North Carolina, USA.; 5: U.S. EPA, Office of Research and Development, National Health Effects Research Laboratory, Experimental Toxicology Division, Pharmacokinetics Branch, Research Triangle Park, North Carolina, USA.; Issue Info: Mar2008, Vol. 20 Issue 4, p375; Thesaurus Term: Vinyl acetate; Subject Term: Aldehyde dehydrogenase; Subject Term: Metabolism; Subject Term: Aldehydes; Subject Term: Alcohol dehydrogenase; Subject Term: Blood circulation; Subject Term: Adenylic acid; Subject Term: Body fluid flow; Subject Term: Hemodynamics; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 16p; Illustrations: 2 Diagrams, 9 Charts, 3 Graphs; Document Type: Article L3 - 10.1080/08958370801903750 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=30066825&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Bettencourt, M.T. T1 - Flux limiting embedded boundary technique for electromagnetic FDTD JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2008/03// VL - 227 IS - 6 M3 - Article SP - 3141 EP - 3158 SN - 00219991 AB - Abstract: A general approach for incorporating embedded boundaries into an electromagnetic finite difference time domain (FDTD) code is presented. This algorithm is shown to satisfy Gauss’s law and enforces no magnetic monopoles while maintaining a globally second-order result (first-order at physical boundaries), with no added time-step restriction. Theoretically predicted superior results are shown with an 11% time-step reduction from the Courant stability limit. This is achieved through a physics-based flux limiting scheme near physical boundaries. Stability, local truncation error and energy conservation analysis are also provided. [Copyright &y& Elsevier] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Energy conservation KW - Finite differences KW - Algorithms KW - Numerical analysis KW - Conformal boundaries KW - Electromagnetic KW - EM KW - Embedded boundaries KW - FDTD KW - Finite difference time domain KW - Flux limiting N1 - Accession Number: 30025874; Bettencourt, M.T. 1; Email Address: icepic@kirtland.af.mil; Affiliations: 1 : Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, NM 87117, United States; Source Info: Mar2008, Vol. 227 Issue 6, p3141; Thesaurus Term: Energy conservation; Subject Term: Finite differences; Subject Term: Algorithms; Subject Term: Numerical analysis; Author-Supplied Keyword: Conformal boundaries; Author-Supplied Keyword: Electromagnetic; Author-Supplied Keyword: EM; Author-Supplied Keyword: Embedded boundaries; Author-Supplied Keyword: FDTD; Author-Supplied Keyword: Finite difference time domain; Author-Supplied Keyword: Flux limiting; Number of Pages: 18p; Document Type: Article L3 - 10.1016/j.jcp.2007.11.043 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=8gh&AN=30025874&site=ehost-live&scope=site DP - EBSCOhost DB - 8gh ER - TY - JOUR T1 - Glenohumeral internal rotation deficit in the asymptomatic professional pitcher and its relationship to humeral retroversion. AU - Tokish, John M. AU - Curtin, Michael S. AU - Young-Kyu Kim AU - Hawkins, Richard J. AU - Torry, Michael R. JO - Journal of Sports Science & Medicine JF - Journal of Sports Science & Medicine Y1 - 2008/03// VL - 7 IS - 1 SP - 78 EP - 83 SN - 13032968 N1 - Accession Number: 31599745; Author: Tokish, John M.: 1 email: John.Tokish@usafa.af.mil. Author: Curtin, Michael S.: 2 email: mcurtain@yahoo.com. Author: Young-Kyu Kim: 3 email: kykhyr@ghil.com. Author: Hawkins, Richard J.: 4 email: Richard.Hawkins@shcc.info. Author: Torry, Michael R.: 5 email: mike.torry@shsmf.org. ; Author Affiliation: 1 United States Air Force Academy, Colorado Springs, CO, USA: 2 Boise Orthopedics, Boise Idaho, USA: 3 Gachen University, Department of Orthopedics, Inchon, South Korea: 4 Steadman♦Hawkins Clinic of the Carolinas, Spartanburg, SC, USA: 5 Steadman♦Hawkins Research Foundation, Vail, CO, USA; No. of Pages: 6; Language: English; Publication Type: Article; Update Code: 20080410 N2 - The article discusses a study which determines whether the glenohumeral internal rotation deficits (GIRD) exist in an asymptomatic population of professional pitchers and its relationship to humeral retroversion. The study showed no statistically significant relationship between GIRD and measures of soft tissue contributions in asymptomatic population. It is concluded that the internal rotation deficits should not be used as the sole screening tool to diagnose the disabled throwing shoulder. KW - *SHOULDER joint KW - *SOFT tissue injuries KW - *GLENOHUMERAL joint KW - *PITCHERS (Baseball) KW - *THROWING (Sports) KW - RANGE of motion KW - Glenohumeral internal rotation KW - humeral retroversion KW - pitcher ROM UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=31599745&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Cook, Martin L. T1 - Revolt of the Generals: A Case Study in Professional Ethics. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College J1 - Parameters: U.S. Army War College PY - 2008///Spring2008 Y1 - 2008///Spring2008 VL - 38 IS - 1 M3 - Article SP - 4 EP - 15 SN - 00311723 AB - The article focuses on professional ethics, and the questions on military professionalism in the United States. According to the author, military professionalism has received a lot of debates, and analysis due to several reasons including the losing sense in professionalism by the Army officers, and the application of ethics to the Armies' professional knowledge. Also discussed are debates on the professionalism of Secretary of Defense Donald Rumsfeld. KW - ETHICS KW - PROFESSIONAL ethics KW - MILITARY departments & divisions -- United States KW - PROFESSIONALISM KW - UNITED States N1 - Accession Number: 31704260; Source Information: Spring2008, Vol. 38 Issue 1, p4; Subject Term: ETHICS; Subject Term: PROFESSIONAL ethics; Subject Term: MILITARY departments & divisions -- United States; Subject Term: PROFESSIONALISM; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 12p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=31704260&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2013-35940-006 AN - 2013-35940-006 AU - Miller, Nita Lewis AU - Shattuck, Lawrence G. AU - Matsangas, Panagiotis AU - Dyche, Jeff T1 - Sleep and academic performance in U.S. military training and education programs. JF - Mind, Brain, and Education JO - Mind, Brain, and Education JA - Mind Brain Educ Y1 - 2008/03// VL - 2 IS - 1 SP - 29 EP - 33 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 1751-2271 SN - 1751-228X AD - Miller, Nita Lewis, Naval Postgraduate School, Operations Research Department, 1411 Cunningham Drive, Monterey, CA, US, 93943 N1 - Accession Number: 2013-35940-006. Partial author list: First Author & Affiliation: Miller, Nita Lewis; Naval Postgraduate School, Monterey, CA, US. Release Date: 20140310. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: College Students; Military Training; Sleep. Minor Descriptor: Academic Achievement; Individual Education Programs. Classification: Educational Psychology (3500). Population: Human (10). Location: US. Methodology: Literature Review. References Available: Y. Page Count: 5. Issue Publication Date: Mar, 2008. Copyright Statement: International Mind, Brain, and Education Society and Blackwell Publishing, Inc. 2008. AB - This review examines the effects of military training regimes, which might include some degree of sleep deprivation, on sleep–wake schedules. We report a 4-year longitudinal study of sleep patterns of cadets at the United States Military Academy and the consequences of an extension of sleep from 6 to 8 hr per night at the United States Navy‘s Recruit Training Command. These studies provide an opportunity to observe sleep in a college-age population and also to record sleep patterns over an entire 4-year college experience, adding to our understanding of the changes in sleep patterns over the life span. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - sleep KW - academic performance KW - military training KW - education programs KW - college students KW - 2008 KW - College Students KW - Military Training KW - Sleep KW - Academic Achievement KW - Individual Education Programs KW - 2008 DO - 10.1111/j.1751-228X.2008.00026.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-35940-006&site=ehost-live&scope=site UR - nlmiller@nps.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Degnan, James H. AU - Amdahl, David J. AU - Brown, Aaron AU - Cavazos, Thomas AU - Coffey, Sean K. AU - Domonkos, Matthew T. AU - Frese, Michael H. AU - Frese, Sherry D. AU - Gale, Donald G. AU - Grabowski, Theodore C. AU - Intrator, Thomas P. AU - Kirkpatrick, Ronald C. AU - Kiuttu, Gerald F. AU - Lehr, Frederick M. AU - Letterio, James D. AU - Parker, Jerald V. AU - Peterkin Jr, Robert E. AU - Roderick, Norman F. AU - Ruden, Edward L. AU - Siemon, Richard E. T1 - Experimental and Computational Progress on Liner Implosions for Compression of FRCs. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2008/02//Feb2008 Part 1 of 2 Y1 - 2008/02//Feb2008 Part 1 of 2 VL - 36 IS - 1 M3 - Article SP - 80 EP - 91 SN - 00933813 AB - Magnetized target fusion (MTF) is a means to com- press plasmas to fusion conditions that uses magnetic fields to greatly reduce electron thermal conduction, thereby greatly reducing compression power density requirements. The compression is achieved by imploding the boundary, a metal shell. This effort pursues formation of the field-reversed configuration (FRC) type of magnetized plasma, and implosion of the metal shell by means of magnetic pressure from a high current flowing through the shell. We reported previously on experiments demonstrating that we can use magnetic pressure from high current capacitor discharges to implode long cylindrical metal shells (liners) with size, symmetry, implosion velocity, and overall performance suitable for compression of FRCs. We also presented considerations of using deformable liner-electrode contacts of Z-pinch geometry liners or theta pinch-driven liners, in order to have axial access to inject FRCs and to have axial diagnostic access. Since then, we have experimentally implemented the Z-pinch discharge driven deformable liner-electrode contact, obtained full axial coverage radiography of such a liner implosion, and obtained 2 ½ dimensional MHD simulations for a variety of profiled thickness long cylindrical liners. The radiographic results indicate that at least 16 times radial compression of the inner surface of a 0.11-cm-thick Al liner was achieved, with a symmetric implosion, free of instability growth in the plane of the symmetry axis. We have also made progress in combining 2 ½-D MHD simulations of FRC formation with imploding liner compression of FRCs. These indicate that capture of the injected FRC by the imploding liner can be achieved with suitable relative timing of the FRC formation and liner implosion discharges. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPHEROMAKS KW - MAGNETIC fields KW - PINCH effect (Physics) KW - STELLARATORS KW - REVERSED field pinches KW - ELECTROSTATIC accelerators KW - MAGNETIC flux compression KW - PLASMA (Ionized gases) KW - FUSION reactors N1 - Accession Number: 31320554; Source Information: Feb2008 Part 1 of 2, Vol. 36 Issue 1, p80; Subject Term: SPHEROMAKS; Subject Term: MAGNETIC fields; Subject Term: PINCH effect (Physics); Subject Term: STELLARATORS; Subject Term: REVERSED field pinches; Subject Term: ELECTROSTATIC accelerators; Subject Term: MAGNETIC flux compression; Subject Term: PLASMA (Ionized gases); Subject Term: FUSION reactors; Subject Term: ; Number of Pages: 12p; ; Illustrations: 11 Diagrams, 2 Charts; ; Document Type: Article; L3 - 10.1109/TPS.2007.913814 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=31320554&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Turchi, Peter J. AU - Roderick, Norman F. AU - Degnan, James H. AU - Frese, Michael H. AU - Amdahl, David J. T1 - Preparation and Liner Compression of Plasma From an Ultrahigh Speed Flow. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2008/02//Feb2008 Part 1 of 2 Y1 - 2008/02//Feb2008 Part 1 of 2 VL - 36 IS - 1 M3 - Article SP - 92 EP - 103 SN - 00933813 AB - Preparation of the target plasma represents a critical issue in liner compression techniques to achieve fusion conditions. We consider the use of an ultrahigh speed plasma flow from a special coaxial-gun arrangement known as the plasma flow switch. Experiments have demonstrated that this arrangement can provide plasma flows with speeds in excess of 2000 km/s. Stagnation of such a plasma flow results in fully stripped aluminum plasma with electron temperatures of 30 keV. Substitution of deuterium or a deuterium-tritium mixture could provide target plasma at kilovolt temperatures within an imploding liner. Such temperatures suggest that, even if substantial heat loss occurred during liner compression, fusion-level temperatures would be possible. The concatenation of events to generate the ultrahigh speed flow, to direct it into the implosion chamber, and to arrange liner dynamics for effective compression demands numerical simulation, which is based on initial analytical estimates. Both types of calculation for exploring this concept are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONTROLLED fusion KW - PLASMA dynamics KW - PULSED power systems KW - ALUMINUM KW - MECHANICS (Physics) KW - STATICS KW - COAXIAL cables KW - ELECTRONS KW - TEMPERATURE N1 - Accession Number: 31320555; Source Information: Feb2008 Part 1 of 2, Vol. 36 Issue 1, p92; Subject Term: CONTROLLED fusion; Subject Term: PLASMA dynamics; Subject Term: PULSED power systems; Subject Term: ALUMINUM; Subject Term: MECHANICS (Physics); Subject Term: STATICS; Subject Term: COAXIAL cables; Subject Term: ELECTRONS; Subject Term: TEMPERATURE; Subject Term: ; Number of Pages: 12p; ; Illustrations: 15 Diagrams; ; Document Type: Article; L3 - 10.1109/TPS.2007.914169 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=31320555&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Vaia, Richard AU - Baur, Jetfery T1 - Adaptive Composites. JO - Science JF - Science Y1 - 2008/01/25/ VL - 319 IS - 5862 M3 - Article SP - 420 EP - 421 SN - 00368075 AB - The article focuses on the concepts of developing composite materials that can respond dynamically to changes in their environment. It relates that advance passive material technologies, such as continuous-fiber organic-matrix composites have revolutionized applications from sporting equipment and prosthetics to satellite and aircrafts. It mentions that new multicomponent, hierarchical material systems are inspired by biology, such as a cell's ability to change shape and recover from large deformations arises in part from the arrangement of actin filaments in the cellular cytoplasm, which can be created from cellular materials, bistable composites laminates and bimorph strips. KW - Biology KW - Life sciences KW - Composite materials KW - Composite construction KW - Functionally gradient materials KW - Laminated materials KW - Bimorphs KW - Actin KW - Materials N1 - Accession Number: 30046792; Vaia, Richard 1; Email Address: richard.vaia@wpafb.af.mil; Baur, Jetfery 1; Email Address: jeffery.baur@wpafb.af.mil; Affiliations: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright- Patterson Air Force Base, OH 45433, USA; Issue Info: 1/25/2008, Vol. 319 Issue 5862, p420; Thesaurus Term: Biology; Thesaurus Term: Life sciences; Subject Term: Composite materials; Subject Term: Composite construction; Subject Term: Functionally gradient materials; Subject Term: Laminated materials; Subject Term: Bimorphs; Subject Term: Actin; Subject Term: Materials; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 2p; Illustrations: 1 Color Photograph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=30046792&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Soto, Armando AU - DelRaso, Nicholas J. AU - Schlager, John J. AU - Chan, Victor T. T1 - d-Serine exposure resulted in gene expression changes indicative of activation of fibrogenic pathways and down-regulation of energy metabolism and oxidative stress response JO - Toxicology JF - Toxicology Y1 - 2008/01/14/ VL - 243 IS - 1/2 M3 - Article SP - 177 EP - 192 SN - 0300483X AB - Abstract: Renal toxicity can commonly occur after exposure to xenobiotics, pharmaceutical agents or environmental pollutants. Changes in the gene expression in kidney parenchymal cells that precede and/or accompany renal injury may be hallmark critical events in the onset of pathologic changes of renal functions. Over the last several years, transcriptomic analysis has evolved to enable simultaneous analysis of the expression profiles of tens of thousands of genes in response to various endogenous and exogenous stimuli. In this study, we investigated gene expression changes in the kidney after acute exposure to a nephrotoxin, d-serine, which targets the proximal tubule of the kidney. Male F-344 rats injected intraperitoneally with a single dose of d-serine (5, 20, 50, 200 or 500mg/kg), and gene expression profiles in the kidney were determined using the Affymetrix RAE230A gene arrays at 96h post-dosing. d-Serine treatment resulted in the up- and down-regulation of 1158 and 749 genes, respectively, over the entire dose range based on the intersection of the results of t-test, p <0.01 over two consecutive doses, and ANOVA with Bonferonni correction for multiple testing. Interestingly, both the up-and down-regulated genes show a unified dose response pattern as revealed in the self-organized map clustering analysis using the expression profiles of the 1907 differentially expressed genes as input data. There appears to be minimal changes in the expression level of these genes in the dose range of 5–50mg/kg, while the most prominent changes were observed at the highest doses tested, i.e. 200 and 500mg/kg. Pathway analysis of the differentially expressed genes showed perturbation of a large number of biological processes/pathways after d-serine exposure. Among the up-regulated pathways are actin cytoskeleton biogenesis and organization, apoptosis, cell cycle regulation, chromatin assembly, excision repair of damaged DNA, DNA replication and packaging, protein biosynthesis, metabolism and transport, inflammatory response, proteasome-mediated degradation of oxidatively damaged cytosolic proteins, Ras protein signal transduction, TGF-beta signaling pathway and mRNA transcription, processing, splicing and transport. On the other hand, major metabolic pathways, which include carbohydrate metabolism, TCA cycle, oxidative phosphorylation, ATP synthesis coupled electron transport, amino acid metabolism and transport, lipid metabolism, nucleotide metabolism, and vitamin metabolism, and oxidative stress response including induction of antioxidant genes and glutathione metabolism are down-regulated. As tubular epithelia have strong energy demand for normal functions, down-regulation of energy metabolism after d-serine treatment may be related to the mechanism of its nephrotoxicity. In addition, hydrogen peroxide, a reactive oxygen species, is produced as a byproduct of the metabolism of d-serine by d-amino acid oxidase in the peroxisomes of the tubular epithelia. Down-regulation of pathways for antioxidant genes induction and glutathione metabolism will likely exacerbate the cytotoxicity of this reactive oxygen species. The observation that the genes involved in apoptosis, DNA repair, proteasome pathway for the degradation of oxidatively damaged cytosolic proteins were up-regulated lends some supports to this premise. Up-regulation of pathways of cell proliferation cycle, DNA replication and gene expression process, including mRNA transcription, processing, splicing, transport, translation initiation, and protein transport along with protein complex assembly, suggests ongoing tissue repair and regeneration. Consistent with the fibrogenic function of the TGF-beta signaling pathway in various experimental renal diseases, genes encoding major extracellular matrix components such as collagens, laminins, fibronectin 1 and tenascins are also strongly up-regulated. Taken together, the results of this study provide important insights into the molecular mechanism of d-serine nephrotoxicity, as well as the activation of specific cellular pathways in response to this toxic insult. [Copyright &y& Elsevier] AB - Copyright of Toxicology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Amino acids KW - Genes KW - Gene expression KW - Genetic regulation KW - Biological interaction network KW - d-Serine treatment KW - Pathway analysis KW - Renal injury KW - Transcriptomic profiling N1 - Accession Number: 27942157; Soto, Armando 1; Email Address: Armando.Soto@wpafb.af.mil; DelRaso, Nicholas J. 1; Email Address: Nicholas.DelRaso@wpafb.af.mil; Schlager, John J. 1; Email Address: John.Schlager@wpafb.af.mil; Chan, Victor T.; Email Address: Victor.Chan@wpafb.af.mil; Affiliations: 1: Applied Biotechnology Branch, Division of Biosciences and Protection, Human Effectiveness Directorate, Air Force Research Laboratory, 2729 R Street, Area B, Building 837, Wright Patterson Air Force Base, Dayton, OH 45433-5707, USA; Issue Info: Jan2008, Vol. 243 Issue 1/2, p177; Subject Term: Amino acids; Subject Term: Genes; Subject Term: Gene expression; Subject Term: Genetic regulation; Author-Supplied Keyword: Biological interaction network; Author-Supplied Keyword: d-Serine treatment; Author-Supplied Keyword: Pathway analysis; Author-Supplied Keyword: Renal injury; Author-Supplied Keyword: Transcriptomic profiling; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.tox.2007.10.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=27942157&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Heseltine, Bruce P. T1 - Analysis: KC-135 Lean Fueling Operations. JO - Air Force Journal of Logistics JF - Air Force Journal of Logistics J1 - Air Force Journal of Logistics PY - 2008///Winter2008 Y1 - 2008///Winter2008 VL - 31 IS - 4 M3 - Article SP - 29 EP - 37 PB - Superintendent of Documents SN - 0270403X AB - The article discusses the approach of using lean and just-in-time fueling processes linked with the growth of a tanker dispatch system within the U.S. Air Force Air Mobility Command. The approach would modify the KC-135 community to markedly ameliorate mission planning, applying a fixed targeted shutdown fuel quantity. It is also averred that under this approach, aircraft would be loaded with fuel required in fulfilling a given mission. KW - MILITARY planning KW - LEAN management KW - JUST-in-time systems KW - AIRPLANES -- Fuel KW - KC-135 (Tanker aircraft) KW - AIRCRAFT industry -- Military aspects KW - UNITED States N1 - Accession Number: 31425511; Source Information: Winter2008, Vol. 31 Issue 4, p29; Subject Term: MILITARY planning; Subject Term: LEAN management; Subject Term: JUST-in-time systems; Subject Term: AIRPLANES -- Fuel; Subject Term: KC-135 (Tanker aircraft); Subject Term: AIRCRAFT industry -- Military aspects; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 9p; ; Illustrations: 1 Color Photograph, 5 Charts, 1 Graph; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=31425511&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Lyons, Joseph B. AU - Stokes, Charlene AU - Palumbo, Mark AU - Boyle, Edward AU - Seyba, Jason AU - Ames, David T1 - Bringing Logistics into the Laboratory: Developing a Team-Based Logistics Task. JO - Air Force Journal of Logistics JF - Air Force Journal of Logistics J1 - Air Force Journal of Logistics PY - 2008///Winter2008 Y1 - 2008///Winter2008 VL - 31 IS - 4 M3 - Article SP - 49 EP - 55 PB - Superintendent of Documents SN - 0270403X AB - The article focuses on the existing military logistics collaboration in the U.S. It is averred that research in collaboration science is significant as organizations enforce team-based systems. It is inferred that computer-based aerial port simulation (CAPS) software will permit researchers to survey logistics collaboration in controlled settings that abridges the effects of impertinent variables. KW - LOGISTICS KW - COLLECTIVE action KW - COMPUTER software KW - UNITED States. Air Force KW - UNITED States N1 - Accession Number: 31425513; Source Information: Winter2008, Vol. 31 Issue 4, p49; Subject Term: LOGISTICS; Subject Term: COLLECTIVE action; Subject Term: COMPUTER software; Subject Term: UNITED States. Air Force; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 7p; ; Illustrations: 2 Color Photographs, 2 Illustrations, 2 Charts; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=31425513&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - CHAP AU - Commander, Clayton W. AU - Pardalos, Panos M. AU - Ryabchenko, Valeriy AU - Shylo, Oleg AU - Uryasev, Stan AU - Zrazhevsky, Grigoriy AD - US Air Force Research Laboratory AD - U FL AD - U FL AD - U FL AD - U FL AD - U FL A2 - Pardalos, Panos A2 - Grundel, Don A2 - Murphey, Robert A. A2 - Prokopyev, Oleg T1 - Eavesdropping and Jamming Communication Networks T2 - Cooperative Networks: Control and Optimization PB - New Dimensions in Networks. Cheltenham, U.K. and Northampton, Mass.: Elgar Y1 - 2008/// SP - 101 EP - 112 N1 - Accession Number: 1067654; Reviewed Book ISBN: 978-1-84720-453-0; ; Publication Type: Collective Volume Article; Update Code: 200911 KW - Related Disciplines Y80 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1067654&site=ehost-live&scope=site DP - EBSCOhost DB - ecn ER - TY - CHAP AU - Commander, Clayton W. AU - Festa, Paola AU - Oliveira, Carlos A. S. AU - Pardalos, Panos M. AU - Resende, Mauricio G. C. AU - Tsitselis, Marco AD - US Air Force Research Laboratory AD - U Naples AD - Princeton Consultants AD - U FL AD - AT&T Labs Research AD - U Naples A2 - Pardalos, Panos A2 - Grundel, Don A2 - Murphey, Robert A. A2 - Prokopyev, Oleg T1 - GRASP with Path-Relinking for the Cooperative Communication Problem on Ad Hoc Networks T2 - Cooperative Networks: Control and Optimization PB - New Dimensions in Networks. Cheltenham, U.K. and Northampton, Mass.: Elgar Y1 - 2008/// SP - 187 EP - 207 N1 - Accession Number: 1067658; Reviewed Book ISBN: 978-1-84720-453-0; ; Publication Type: Collective Volume Article; Update Code: 200911 KW - Related Disciplines Y80 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1067658&site=ehost-live&scope=site DP - EBSCOhost DB - ecn ER - TY - CHAP AU - Pachter, Meir AU - Chandler, Phillip R. AU - Swaroop, Dharba AD - US Air Force Institute of Technology AD - US Air Force Research Laboratory AD - TX A&M U A2 - Pardalos, Panos A2 - Grundel, Don A2 - Murphey, Robert A. A2 - Prokopyev, Oleg T1 - Optimal Control of an ATR Module--Equipped MAV/Human Operator Team T2 - Cooperative Networks: Control and Optimization PB - New Dimensions in Networks. Cheltenham, U.K. and Northampton, Mass.: Elgar Y1 - 2008/// SP - 209 EP - 252 N1 - Accession Number: 1067659; Reviewed Book ISBN: 978-1-84720-453-0; ; Publication Type: Collective Volume Article; Update Code: 200911 KW - Related Disciplines Y80 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1067659&site=ehost-live&scope=site DP - EBSCOhost DB - ecn ER - TY - CHAP AU - Yerrick, Nathan P. AU - Tiwari, Abhishek AU - Jeffcoat, David E. AD - US Air Force Research Laboratory AD - CA Institute of Technology AD - US Air Force Research Laboratory A2 - Pardalos, Panos A2 - Grundel, Don A2 - Murphey, Robert A. A2 - Prokopyev, Oleg T1 - An Investigation of a Dynamic Sensor Motion Strategy T2 - Cooperative Networks: Control and Optimization PB - New Dimensions in Networks. Cheltenham, U.K. and Northampton, Mass.: Elgar Y1 - 2008/// SP - 253 EP - 267 N1 - Accession Number: 1067660; Reviewed Book ISBN: 978-1-84720-453-0; ; Publication Type: Collective Volume Article; Update Code: 200911 KW - Related Disciplines Y80 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1067660&site=ehost-live&scope=site DP - EBSCOhost DB - ecn ER - TY - CHAP AU - Pack, Daniel J. AU - York, George W. P. AD - US Air Force Academy AD - US Air Force Academy A2 - Pardalos, Panos A2 - Grundel, Don A2 - Murphey, Robert A. A2 - Prokopyev, Oleg T1 - Cooperative Persistent Surveillance Search Algorithms Using Multiple Unmanned Aerial Vehicles T2 - Cooperative Networks: Control and Optimization PB - New Dimensions in Networks. Cheltenham, U.K. and Northampton, Mass.: Elgar Y1 - 2008/// SP - 279 EP - 289 N1 - Accession Number: 1067662; Reviewed Book ISBN: 978-1-84720-453-0; ; Publication Type: Collective Volume Article; Update Code: 200911 KW - Related Disciplines Y80 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1067662&site=ehost-live&scope=site DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Jaramillo-Henao, Carlos A. AU - Kempel, Leo C. AU - Schneider, Stephen W. T1 - Simulation of Microstrip Leaky-Wave Antennas on Inhomogeneous Substrates Using Transverse Resonance and Finite Element Methods. JO - Electromagnetics JF - Electromagnetics Y1 - 2008/01//Jan-Mar2008 VL - 28 IS - 1/2 M3 - Article SP - 27 EP - 41 PB - Taylor & Francis Ltd SN - 02726343 AB - Microstrip leaky-wave antennas offer the potential for wide-bandwidth, thin-profile apertures, albeit with the potential disadvantage of beam steering with respect to operating frequency. These antennas have been extensively studied in the past; however, previously published results have utilized homogeneous substrates. In this article, a substrate with transverse step inhomogeneous layers is investigated with two methods: the transverse resonance method (TRM) and the finite element-boundary integral (FE-BI) method. In this article, the former is generalized for N-layers and used to determine the leaky-wave mode propagating characteristics. Antennas designed using this approach are then simulated using the finite element method to determine the radiation pattern. [ABSTRACT FROM AUTHOR] AB - Copyright of Electromagnetics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FINITE element method KW - MICROSTRIP antennas KW - RESONANCE KW - SHEAR waves KW - ANTENNA radiation patterns KW - finite element-boundary integral KW - inhomogeneous substrate KW - leaky wave N1 - Accession Number: 30024383; Jaramillo-Henao, Carlos A. 1; Kempel, Leo C. 1,2; Email Address: kempel@egr.msu.edu; Schneider, Stephen W. 2; Affiliations: 1: Michigan State University, East Lansing, Michigan, USA.; 2: Air Force Research Laboratory Sensor's Directorate, Wright-Patterson AFB, Ohio, USA.; Issue Info: Jan-Mar2008, Vol. 28 Issue 1/2, p27; Thesaurus Term: FINITE element method; Subject Term: MICROSTRIP antennas; Subject Term: RESONANCE; Subject Term: SHEAR waves; Subject Term: ANTENNA radiation patterns; Author-Supplied Keyword: finite element-boundary integral; Author-Supplied Keyword: inhomogeneous substrate; Author-Supplied Keyword: leaky wave; Number of Pages: 15p; Illustrations: 1 Black and White Photograph, 6 Diagrams, 10 Graphs; Document Type: Article L3 - 10.1080/02726340701817974 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=30024383&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Eismann, Michael T. AU - Meola, Joseph AU - Hardie, Russell C. T1 - Hyperspectral Change Detection in the Presence of Diurnal and Seasonal Variations. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2008/01// VL - 46 IS - 1 M3 - Article SP - 237 EP - 249 SN - 01962892 AB - Hyperspectral change detection has been shown to be a promising approach for detecting subtle targets in complex backgrounds. Reported change-detection methods are typically based on linear predictors that assume a space-invariant affine transformation between image pairs. Unfortunately, several physical mechanisms can lead to a significant space variance in the spectral change associated with background clutter. This may include shadowing and other illumination variations, as well as seasonal impacts on the spectral nature of the vegetation. If not properly addressed, this can lead to poor change-detection performance. This paper explores the space-varying nature of such changes through empirical measurements and investigates spectrally segmented linear predictors to accommodate these effects. Several specific algorithms are developed and applied to change imagery captured under controlled conditions, and the impacts on clutter suppression and change detection are quantified and compared. The results indicate that such techniques can provide markedly improved performance when the environmental conditions associated with the image pairs are substantially different. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - LIGHTING KW - IMAGE analysis KW - IMAGING systems KW - SPECTRAL reflectance KW - SURFACE chemistry KW - SPATIAL systems KW - DIFFERENTIAL geometry KW - REMOTE sensing KW - Change detection KW - hyperspectral KW - image analysis KW - spectral clustering KW - target detection N1 - Accession Number: 28344043; Eismann, Michael T. 1; Email Address: michael.eismann@wpafb.af.mil; Meola, Joseph 1; Hardie, Russell C. 2; Email Address: rhardie@udayton.edu; Affiliations: 1: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7700 USA; 2: Department of Electrical and Computer Engineering and the Electro-Optics Program, University of Dayton, Dayton, OH 45459-0226 USA; Issue Info: Jan2008, Vol. 46 Issue 1, p237; Thesaurus Term: ALGORITHMS; Thesaurus Term: LIGHTING; Subject Term: IMAGE analysis; Subject Term: IMAGING systems; Subject Term: SPECTRAL reflectance; Subject Term: SURFACE chemistry; Subject Term: SPATIAL systems; Subject Term: DIFFERENTIAL geometry; Subject Term: REMOTE sensing; Author-Supplied Keyword: Change detection; Author-Supplied Keyword: hyperspectral; Author-Supplied Keyword: image analysis; Author-Supplied Keyword: spectral clustering; Author-Supplied Keyword: target detection; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 335129 Other Lighting Equipment Manufacturing; Number of Pages: 13p; Illustrations: 1 Black and White Photograph, 1 Diagram, 1 Chart, 1 Graph; Document Type: Article L3 - 10.1109/TGRS.2007.907973 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=28344043&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Patel, Mehul P. AU - Ng, T. Terry AU - Vasudevan, Srikanth AU - Corke, Thomas C. AU - Post, Martiqua L. AU - McLaughlin, Thomas E. AU - Suchomel, Charles F. T1 - Scaling Effects of an Aerodynamic Plasma Actuator. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2008/01//Jan/Feb2008 Y1 - 2008/01//Jan/Feb2008 VL - 45 IS - 1 M3 - Article SP - 223 EP - 223 SN - 00218669 AB - We present experimental results to yield insight into the scalability and control effectiveness of single-dielectric-barrier- discharge plasma actuators for leading-edge separation control on airfoils. The parameters investigated are chord Reynolds number, Mach number, leading-edge radius, actuator amplitude, and unsteady frequency. This includes chord Reynolds numbers up to 1:0 x 106 and a maximum freestream speed of 60 m/s corresponding to a Mach number of 0.176. The main objective of this work is to examine the voltage requirements for the plasma actuators to reattach the flow at the leading edge of airfoils at poststall angles of attack for a range of flow parameters in order to establish scaling between laboratory and full-flight conditions. For the full range of conditions, an optimum unsteady actuator frequency f is found to minimize the actuator voltage needed to reattach the flow, such that F+ = fLsep/U∞ = 1. At the optimum frequencies, the minimum voltage required to reattach the flow is weakly dependent on chord Reynolds number and strongly dependent on the poststall angle of attack and leading-edge radius. The results indicate that the voltage required to reattach the flow scales as the square of the leading-edge radius. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCALING (Social sciences) KW - SOCIAL sciences -- Methodology KW - AERODYNAMICS KW - FLUID dynamics KW - ACTUATORS KW - AUTOMATIC control N1 - Accession Number: 29386639; Source Information: Jan/Feb2008, Vol. 45 Issue 1, p223; Subject Term: SCALING (Social sciences); Subject Term: SOCIAL sciences -- Methodology; Subject Term: AERODYNAMICS; Subject Term: FLUID dynamics; Subject Term: ACTUATORS; Subject Term: AUTOMATIC control; Subject Term: ; Number of Pages: 1p; ; Document Type: Article; L3 - 10.2514/1.31830 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=29386639&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Reeder, Mark F. AU - Allen, Walter AU - Phillips, J. Michael AU - Dimmick, Robert T1 - Wind-Tunnel Measurements of the E-8C Modeled with and Without Winglets. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2008/01//Jan/Feb2008 Y1 - 2008/01//Jan/Feb2008 VL - 45 IS - 1 M3 - Article SP - 345 EP - 345 SN - 00218669 AB - The article presents a study that performed a series of tests on a geometry that very closely matches that of the actual, existent joint surveillance target attack radar system (Joint STARS) E-8C aircraft. Both wind-tunnel testing carried out at the Air Force Institute of Technology (AFIT), as well as flight tests carried out for the E-8C are included in the study. A baseline for eventual comparisons to a reengined E-8C aircraft will be provided by these data. The flexibility offered by rapid prototyping of aircraft models, within the course of wind-tunnel testing, led to a secondary goal of this research effort. KW - FLIGHT testing KW - GEOMETRY KW - MILITARY airplanes KW - MILITARY aeronautics KW - WIND tunnel testing KW - AERODYNAMIC measurements KW - AIR Force Institute of Technology (U.S.) N1 - Accession Number: 29386645; Source Information: Jan/Feb2008, Vol. 45 Issue 1, p345; Subject Term: FLIGHT testing; Subject Term: GEOMETRY; Subject Term: MILITARY airplanes; Subject Term: MILITARY aeronautics; Subject Term: WIND tunnel testing; Subject Term: AERODYNAMIC measurements; Subject Term: AIR Force Institute of Technology (U.S.); Subject Term: ; Number of Pages: 1p; ; Document Type: Article; L3 - 10.2514/1.34016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=29386645&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Heidler, Jeanne T. T1 - Andrew Jackson and the Politics of Martial Law: Nationalism, Civil Liberties, and Partisanship. JO - Journal of Military History JF - Journal of Military History J1 - Journal of Military History PY - 2008/01// Y1 - 2008/01// VL - 72 IS - 1 M3 - Book Review SP - 242 EP - 243 SN - 08993718 AB - The article reviews the book "Andrew Jackson and the Politics of Martial Law: Nationalism, Civil Liberties, and Partisanship," by Matthew Warshauer. KW - ANDREW Jackson & the Politics of Martial Law: Nationalism, Civil Liberties & Partisanship (Book) KW - WARSHAUER, Matthew KW - MARTIAL law KW - NONFICTION N1 - Accession Number: 28013594; Source Information: Jan2008, Vol. 72 Issue 1, p242; Subject Term: ANDREW Jackson & the Politics of Martial Law: Nationalism, Civil Liberties & Partisanship (Book); Subject Term: WARSHAUER, Matthew; Subject Term: MARTIAL law; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=28013594&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Bernard, Thomas E. AU - Caravello, Victor AU - Schwartz, Skai W. AU - Ashley, Candi D. T1 - WBGT Clothing Adjustment Factors for Four Clothing Ensembles and the Effects of Metabolic Demands. JO - Journal of Occupational & Environmental Hygiene JF - Journal of Occupational & Environmental Hygiene Y1 - 2008/01// VL - 5 IS - 1 M3 - Article SP - 1 EP - 5 PB - Taylor & Francis Ltd SN - 15459624 AB - This study measured the clothing adjustment factors (CAFs) for four clothing ensembles (Cotton Coveralls, Tyvek 1427 Coveralls, NexGen Coveralls, and Tychem QC Coveralls; all coveralls were worn without hoods) against a baseline of cotton work clothes to determine whether the CAFs would be affected by the metabolic rate. Fifteen participants wore one of the five ensembles while walking on a treadmill at low, moderate, and high rates of work in an environment maintained at 50% relative humidity. A climatic chamber was used to slowly increase the level of heat stress by increasing air temperature. When the participant's core temperature reached a steady-state, the dry bulb temperature was increased. The point at which the core temperature began to increase was defined as the inflection point, and the WBGT recorded 5 min before the inflection point was the critical WBGT for each ensemble. A three-way mixed effects linear model with ensemble by metabolic rate category interactions demonstrated that the CAF did not change with metabolic rate, so CAFs can be used over a wide range of metabolic rates. The data at the moderate metabolic rate were combined with data on 14 participants from a previous study under the same conditions. The CAFs in °C WBGT were 0 for cotton coveralls, 1.0 for Tyvek 1422A, and 2.5 for NexGen. Although the value of 7.5 for Tychem QC was found, the recommendation remained at 10 to account for the effects of humidity. The standard error for the determination of WBGTcrit at 50% relative humidity was 1.60°C WBGT. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Occupational & Environmental Hygiene is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Humidity KW - Industrial hygiene KW - Coveralls KW - Heat -- Physiological effect KW - Work clothes KW - Clothing & dress KW - Cotton textiles KW - Linear models (Statistics) KW - Work environment KW - heat stress KW - metabolic rate KW - protective clothing KW - TLV N1 - Accession Number: 32092785; Bernard, Thomas E. 1; Email Address: tbernard@health.usf.edu; Caravello, Victor 2; Schwartz, Skai W. 1; Ashley, Candi D. 3; Affiliations: 1: University of South Florida, College of Public Health, Tampa, Florida.; 2: United States Air Force, Det 3, AFIOH/CDO, Kadena Air Base, Okinawa, Japan.; 3: University of South Florida, College of Education, Tampa, Florida.; Issue Info: Jan2008, Vol. 5 Issue 1, p1; Thesaurus Term: Humidity; Thesaurus Term: Industrial hygiene; Subject Term: Coveralls; Subject Term: Heat -- Physiological effect; Subject Term: Work clothes; Subject Term: Clothing & dress; Subject Term: Cotton textiles; Subject Term: Linear models (Statistics); Subject Term: Work environment; Author-Supplied Keyword: heat stress; Author-Supplied Keyword: metabolic rate; Author-Supplied Keyword: protective clothing; Author-Supplied Keyword: TLV; NAICS/Industry Codes: 448190 Other Clothing Stores; NAICS/Industry Codes: 448140 Family Clothing Stores; NAICS/Industry Codes: 315210 Cut and Sew Apparel Contractors; NAICS/Industry Codes: 414110 Clothing and clothing accessories merchant wholesalers; NAICS/Industry Codes: 313220 Narrow Fabric Mills and Schiffli Machine Embroidery; NAICS/Industry Codes: 448199 All other clothing stores; NAICS/Industry Codes: 315220 Men's and Boys' Cut and Sew Apparel Manufacturing; NAICS/Industry Codes: 315249 Women's and girls' cut and sew clothing manufacturing; NAICS/Industry Codes: 812332 Industrial Launderers; Number of Pages: 5p; Illustrations: 3 Charts, 2 Graphs; Document Type: Article L3 - 10.1080/15459620701732355 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=32092785&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Fagin, Barry AU - Baird, Leemon AU - Humphries, Jeffrey AU - Schweitzer, Dino T1 - Skepticism and Cryptography. JO - Knowledge, Technology & Policy JF - Knowledge, Technology & Policy J1 - Knowledge, Technology & Policy PY - 2008/01// Y1 - 2008/01// VL - 20 IS - 4 M3 - Article SP - 231 EP - 242 SN - 19464789 AB - Cryptography is an essential component of America’s national security infrastructure. Billions of dollars are spent on cryptosystems every year, in both the public and private sector. Unfortunately, the field is rife with dubious claims, snake oil salesmen, and outright fraud. This paper highlights the importance of skepticism and critical thinking in the role of evaluating and procuring cryptosystems. We discuss our experiences in teaching future leaders about testing extraordinary cryptographic claims by asking hard questions and show examples from our own experience. We believe that the rigorous application of skepticism and critical thinking in cryptography are absolutely essential to the wise use of America’s resources and the security of the nation. [ABSTRACT FROM AUTHOR] AB - Copyright of Knowledge, Technology & Policy is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SKEPTICISM KW - SYMBOLISM KW - CRYPTOGRAPHY KW - COMPUTER security software KW - DATA encryption (Computer science) KW - BELIEF & doubt KW - SIGNS & symbols KW - NATIONAL security -- United States KW - UNITED States N1 - Accession Number: 27813280; Source Information: Jan2008, Vol. 20 Issue 4, p231; Subject Term: SKEPTICISM; Subject Term: SYMBOLISM; Subject Term: CRYPTOGRAPHY; Subject Term: COMPUTER security software; Subject Term: DATA encryption (Computer science); Subject Term: BELIEF & doubt; Subject Term: SIGNS & symbols; Subject Term: NATIONAL security -- United States; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 12p; ; Illustrations: 2 Diagrams, 1 Chart; ; Document Type: Article; L3 - 10.1007/s12130-007-9030-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=trh&AN=27813280&site=ehost-live&scope=site DP - EBSCOhost DB - trh ER - TY - JOUR ID - 106013892 T1 - Ethical considerations for military clinical psychologists: a review of selected literature. AU - McCauley M AU - Hughes JH AU - Liebling-Kalifani H Y1 - 2008/01// N1 - Accession Number: 106013892. Language: English. Entry Date: 20080307. Revision Date: 20150711. Publication Type: Journal Article; case study; research; systematic review. Journal Subset: Biomedical; Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Evidence-Based Practice; Military/Uniformed Services; Psychiatry/Psychology. NLM UID: 8915802. KW - Military Medicine -- Ethical Issues KW - Psychology, Clinical -- Ethical Issues KW - Adult KW - Cochrane Library KW - Female KW - Interpersonal Relations KW - Male KW - Medline KW - Mental Health KW - Military Personnel -- Psychosocial Factors KW - Personal Boundaries KW - Practice Guidelines KW - Privacy and Confidentiality KW - Professional Role KW - Psychologists KW - Psycinfo KW - Vignettes KW - Human SP - 7 EP - 20 JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) JA - MILIT PSYCHOL VL - 20 IS - 1 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - Clinical psychology has had a long and distinguished association with the practice of mental health care in the military. Although clinical psychologists are trained both to adopt and implement ethical values and principles, the military environment holds many contextual and tangible differences from other clinical settings. This literature review investigates the ethical considerations arising from the practice of clinical psychology within the military. Several ethical issues were identified and confidentiality and boundary violations emerged as the two main areas of ethical concern. The findings may have implications for the overall practice of mental health care in the military, the contributions that clinical psychologists make to such services, the role of clinical psychology in times of international conflict, the training of clinical psychologists for military service, and avenues for future research on the practices of military mental health professionals. SN - 0899-5605 AD - Chartered Clinical Psychologist, Sterling Medical Contractor, 48th MDOS/SGOH, 48th Fighter Wing, United States Air Force, RAF Lakenheath, IP279PN, United Kingdom; mathew.mccauley@lakenheath.af.mil UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106013892&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Gookins, Amanda J. T1 - The Role of Intelligence in Policy Making. JO - SAIS Review of International Affairs JF - SAIS Review of International Affairs J1 - SAIS Review of International Affairs PY - 2008///Winter/Spring2008 Y1 - 2008///Winter/Spring2008 VL - 28 IS - 1 M3 - Article SP - 65 EP - 73 SN - 19454716 AB - The article presents a framework that defines the roles of the players in the relationship between policymakers and intelligence analysts and how the interactions of the two synthesize to produce actionable policy. It discusses politicization of intelligence as a major problem in the relationship of the two actors. The author clarifies other obstacles encountered by both parties to allow for greater opportunity to avoid them and to arrive at a better, sounder intelligence analysis and policy creations. KW - ROLES (Social aspects) KW - INTELLIGENCE service KW - INTELLIGENCE officers KW - POLICY sciences KW - PUBLIC administration N1 - Accession Number: 31525415; Source Information: Winter/Spring2008, Vol. 28 Issue 1, p65; Subject Term: ROLES (Social aspects); Subject Term: INTELLIGENCE service; Subject Term: INTELLIGENCE officers; Subject Term: POLICY sciences; Subject Term: PUBLIC administration; Subject Term: ; Number of Pages: 9p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=31525415&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2008-01380-002 AN - 2008-01380-002 AU - McCauley, Mathew AU - Hughes, Jamie Hacker AU - Liebling-Kalifani, Helen T1 - Ethical considerations for military clinical psychologists: A review of selected literature. T3 - Clinical military psychology ethics JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2008/// VL - 20 IS - 1 SP - 7 EP - 20 CY - United Kingdom PB - Taylor & Francis SN - 0899-5605 SN - 1532-7876 AD - McCauley, Mathew, 48th MDOS/SGOH, 48th Fighter Wing, United States Air Force, RAF Lakenheath, IP279PN, United Kingdom N1 - Accession Number: 2008-01380-002. Partial author list: First Author & Affiliation: McCauley, Mathew; 48th Fighter Wing United States Air Force, RAF Lakenheath, United Kingdom. Other Publishers: Educational Publishing Foundation; Lawrence Erlbaum. Release Date: 20080218. Correction Date: 20140811. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Clinical Psychologists; Clinical Psychology; Military Personnel; Professional Ethics. Classification: Professional Ethics & Standards & Liability (3450); Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Literature Review. References Available: Y. Page Count: 14. Issue Publication Date: 2008. AB - Clinical psychology has had a long and distinguished association with the practice of mental health care in the military. Although clinical psychologists are trained both to adopt and implement ethical values and principles, the military environment holds many contextual and tangible differences from other clinical settings. This literature review investigates the ethical considerations arising from the practice of clinical psychology within the military. Several ethical issues were identified and confidentiality and boundary violations emerged as the two main areas of ethical concern. The findings may have implications for the overall practice of mental health care in the military, the contributions that clinical psychologists make to such services, the role of clinical psychology in times of international conflict, the training of clinical psychologists for military service, and avenues for future research on the practices of military mental health professionals. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - ethical considerations KW - military clinical psychologists KW - clinical psychology KW - military personnel KW - 2008 KW - Clinical Psychologists KW - Clinical Psychology KW - Military Personnel KW - Professional Ethics KW - 2008 DO - 10.1080/08995600701753128 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-01380-002&site=ehost-live&scope=site UR - mathew.mccauley@lakenheath.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-00165-002 AN - 2008-00165-002 AU - Carretta, Thomas R. AU - King, Raymond E. T1 - Improved military air traffic controller selection methods as measured by subsequent training performance. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2008/01// VL - 79 IS - 1 SP - 36 EP - 43 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - King, Raymond E., Civil Aerospace Medical Institute, FAA/CAMI, AAM-520, P.O. Box 25082, Oklahoma City, OK, US, 73125 N1 - Accession Number: 2008-00165-002. PMID: 18225776 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Carretta, Thomas R.; Air Force Research Laboratory, Wright-Patterson, OH, US. Release Date: 20080825. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Air Traffic Control; Job Performance; Personnel Selection. Classification: Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: FAA Air Traffic Selection and Training Battery; Armed Forces Qualification Test; Experience Questionnaire; FAA Certified Tower Operator Test; Armed Services Vocational Aptitude Battery DOI: 10.1037/t11801-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 8. Issue Publication Date: Jan, 2008. AB - Introduction: Over the past decade, the U.S. military has conducted several studies to evaluate determinants of enlisted air traffic controller (ATC) performance. Research has focused on validation of the Armed Services Vocational Aptitude Battery (ASVAB) and has shown it to be a good predictor of training performance. Despite this, enlisted ATC training and post-training attrition is higher than desirable, prompting interest in alternate selection methods to augment current procedures. The current study examined the utility of the FAA Air Traffic Selection and Training (AT-SAT) battery for incrementing the predictiveness of the ASVAB versus several enlisted ATC training criteria. Method: Subjects were 448 USAF enlisted ATC students who were administered the ASVAB and FAA AT-SAT subtests and subsequently graduated or were eliminated from apprentice-level training. Training criteria were a dichotomous graduation/elimination training score, average ATC fundamentals course score, and FAA certified tower operator test score. Results: Results confirmed the predictive validity of the ASVAB and showed that one of the AT-SAT subtests resembling a low-fidelity ATC work sample significantly improved prediction of training performance beyond the ASVAB alone. Discussion: Results suggested training attrition could be reduced by raising the current ASVAB minimum qualifying score. However, this approach may make it difficult to identify sufficient numbers of trainees and lead to adverse impact. Although the AT-SAT ATC work sample subtest showed incremental validity to the ASVAB, its length (95 min) may be problematic in operational testing. Recommendations are made for additional studies to address issues affecting operational implementation. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - military air traffic controller selection methods KW - training performance KW - air traffic controller KW - 2008 KW - Air Traffic Control KW - Job Performance KW - Personnel Selection KW - 2008 DO - 10.3357/ASEM.2166.2008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-00165-002&site=ehost-live&scope=site UR - Raymond.King@faa.gov DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2009-11602-002 AN - 2009-11602-002 AU - Gunzelmann, Glenn T1 - Strategy generalization across orientation tasks: Testing a computational cognitive model. JF - Cognitive Science JO - Cognitive Science JA - Cogn Sci Y1 - 2008/// VL - 32 IS - 5 SP - 835 EP - 861 CY - United Kingdom PB - Wiley-Blackwell Publishing Ltd. SN - 0364-0213 SN - 1551-6709 AD - Gunzelmann, Glenn, Air Force Research Laboratory, 6030 South Kent Street, Mesa, AZ, US, 85212-6061 N1 - Accession Number: 2009-11602-002. PMID: 21635355 Partial author list: First Author & Affiliation: Gunzelmann, Glenn; Air Force Research Laboratory, Mesa, AZ, US. Other Publishers: Elsevier Science; Lawrence Erlbaum; Taylor & Francis. Release Date: 20090928. Correction Date: 20120611. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Conference Information: Annual meeting of the Cognitive Science Society, 25th, 2004. Grant Information: Gunzelmann, Glenn. Conference Note: Portions of this research were presented at the aforementioned conference and at the 7th international conference on Cognitive Modeling (2006). Major Descriptor: Cognitive Generalization; Performance; Spatial Orientation (Perception); Strategies; Computational Modeling. Minor Descriptor: Cognitive Processes; Individual Differences. Classification: Human Experimental Psychology (2300). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Experimental Replication; Quantitative Study. References Available: Y. Page Count: 27. Issue Publication Date: 2008. Publication History: Accepted Date: Aug 7, 2007; Revised Date: May 22, 2007; First Submitted Date: Aug 29, 2006. Copyright Statement: All rights reserved. Cognitive Science Society, Inc. 2008. AB - Humans use their spatial information processing abilities flexibly to facilitate problem solving and decision making in a variety of tasks. This article explores the question of whether a general strategy can be adapted for performing two different spatial orientation tasks by testing the predictions of a computational cognitive model. Human performance was measured on an orientation task requiring participants to identify the location of a target either on a map (find-on-map) or within an egocentric view of a space (find-in-scene). A general strategy instantiated in a computational cognitive model of the find-on-map task, based on the results from Gunzelmann and Anderson (2006), was adapted to perform both tasks and used to generate performance predictions for a new study. The qualitative fit of the model to the human data supports the view that participants were able to tailor a general strategy to the requirements of particular spatial tasks. The quantitative differences between the predictions of the model and the performance of human participants in the new experiment expose individual differences in sample populations. The model provides a means of accounting for those differences and a framework for understanding how human spatial abilities are applied to naturalistic spatial tasks that involve reasoning with maps. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - strategy generalization KW - spatial orientation tasks KW - computational cognitive model KW - human performance KW - individual differences KW - spatial information processing KW - 2008 KW - Cognitive Generalization KW - Performance KW - Spatial Orientation (Perception) KW - Strategies KW - Computational Modeling KW - Cognitive Processes KW - Individual Differences KW - 2008 U1 - Sponsor: National Research Council. Other Details: Postdoctoral Research Associate. Recipients: Gunzelmann, Glenn U1 - Sponsor: Air Force Office of Scientific Research. Grant: 02HE01COR. Recipients: No recipient indicated DO - 10.1080/03640210802221957 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-11602-002&site=ehost-live&scope=site UR - glenn.gunzelmann@us.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Tuteja, Anish AU - Wonjae Choi AU - Minglin Ma AU - Mabry, Joseph M. AU - Mazzella, Sarah A. AU - Rutledge, Gregory C. AU - McKinley, Gareth H. AU - Cohen, Robert E. T1 - Designing Superoleophobic Surfaces. JO - Science JF - Science Y1 - 2007/12/07/ VL - 318 IS - 5856 M3 - Article SP - 1618 EP - 1622 SN - 00368075 AB - Understanding the complementary roles of surface energy and roughness on natural nonwetting surfaces has led to the development of a number of biomimetic superhydrophobic surfaces, which exhibit apparent contact angles with water greater than 150 degrees and low contact angle hysteresis. However, superoleophobic surfaces—those that display contact angles greater than 150 degrees with organic liquids having appreciably lower surface tensions than that of water—are extremely rare. Calculations suggest that creating such a surface would require a surface energy lower than that of any known material. We show how a third factor, re-entrant surface curvature, in conjunction with chemical composition and roughened texture, can be used to design surfaces that display extreme resistance to wetting from a number of liquids with low surface tension, including alkanes such as decane and octane. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Matter -- Properties KW - Magnetic induction KW - Aliphatic compounds KW - Surface chemistry KW - Mathematical analysis KW - Surface roughness KW - Parasympathomimetic agents KW - Physical & theoretical chemistry KW - Psychology of learning N1 - Accession Number: 29380681; Tuteja, Anish 1; Wonjae Choi 2; Minglin Ma 1; Mabry, Joseph M. 3; Mazzella, Sarah A. 3; Rutledge, Gregory C. 1; McKinley, Gareth H. 2; Email Address: gareth@mit.edu; Cohen, Robert E. 1; Email Address: recohen@mit.edu; Affiliations: 1: Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; 2: Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; 3: Air Force Research Laboratory, Edwards Air Force Base, CA 93524, USA; Issue Info: 12/7/2007, Vol. 318 Issue 5856, p1618; Thesaurus Term: Matter -- Properties; Thesaurus Term: Magnetic induction; Thesaurus Term: Aliphatic compounds; Thesaurus Term: Surface chemistry; Subject Term: Mathematical analysis; Subject Term: Surface roughness; Subject Term: Parasympathomimetic agents; Subject Term: Physical & theoretical chemistry; Subject Term: Psychology of learning; Number of Pages: 5p; Illustrations: 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=29380681&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Chaplin Jr., Robert L. AU - Jedynak, Jeffrey AU - Johnson, David AU - Helter, Donna AU - Shovelton, Lawrence AU - Garrett, Normalynn T1 - THE EFFECTS OF VALERIAN ON THE TIME COURSE OF EMERGENCE FROM GENERAL ANESTHESIA IN SPRAGUE-DAWLEY RATS (RATTUS NORVEGICUS). JO - AANA Journal JF - AANA Journal Y1 - 2007/12// VL - 75 IS - 6 M3 - Article SP - 431 EP - 435 PB - American Association of Nurse Anesthetists SN - 00946354 AB - Herbal use may be associated with increased morbidity and mortality as a consequence of interactions with anesthetic agents. The purpose of this study was to investigate the effects on emergence from isoflurane anesthesia using a combination of the herb valerian and midazolam compared with valerian alone, midazolam alone, and no additional drug-herb treatment in Sprague-Dawley rats. We assigned 32 male Sprague-Dawley rats to 1 of 4 groups: (1) isoflurane alone, (2) isoflurane plus valerian, (3) isoflurane plus midazolam, and (4) isoflurane plus a combination of valerian and midazolam. Thirty minutes after treatment, animals underwent a standard laparotomy. The time in seconds from discontinuation of isoflurane to the time the animal righted itself and took I step was recorded as emergence time. A 1-way analysis of variance with a post hoc Scheffe procedure revealed that animals given a combination of midazolam and valerian took significantly longer to emerge from anesthesia (F = 58.21; P < .00) compared with all other groups. Awareness of possible interactions of herbals with conventional anesthetics is important so that potential problems may be recognized and treated. These data demonstrate the need for continued research concerning the effects of herbals and their potential for interaction with anesthetics. [ABSTRACT FROM AUTHOR] AB - Copyright of AANA Journal is the property of American Association of Nurse Anesthetists and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANESTHESIA KW - ANESTHESIOLOGY KW - RATTUS norvegicus KW - RATS KW - MEDICINAL plants KW - MIDAZOLAM KW - ISOFLURANE KW - Benzodiazepines KW - emergence KW - rats KW - valerian N1 - Accession Number: 27867183; Chaplin Jr., Robert L. 1; Jedynak, Jeffrey 2; Johnson, David 3; Helter, Donna 4; Shovelton, Lawrence; Garrett, Normalynn 5; Source Information: Dec2007, Vol. 75 Issue 6, p431; Subject: ANESTHESIA; Subject: ANESTHESIOLOGY; Subject: RATTUS norvegicus; Subject: RATS; Subject: MEDICINAL plants; Subject: MIDAZOLAM; Subject: ISOFLURANE; Author-Supplied Keyword: Benzodiazepines; Author-Supplied Keyword: emergence; Author-Supplied Keyword: rats; Author-Supplied Keyword: valerian; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=27867183&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 105971184 T1 - The effects of valerian on the time course of emergence from general anesthesia in Sprague-Dawley rats (Rattus norvegicus) AU - Chaplin RL Jr. AU - Jedynak J AU - Johnson D AU - Heiter D AU - Shovelton L AU - Garrett N Y1 - 2007/12// N1 - Accession Number: 105971184. Language: English. Entry Date: 20080215. Revision Date: 20150820. Publication Type: Journal Article; research; tables/charts. Journal Subset: Blind Peer Reviewed; Core Nursing; Editorial Board Reviewed; Expert Peer Reviewed; Nursing; Peer Reviewed; USA. Special Interest: Advanced Nursing Practice; Perioperative Care. NLM UID: 0431420. KW - Anesthesia Recovery KW - Drug-Herb Interactions KW - Isoflurane KW - Midazolam KW - Valerian KW - Animal Studies KW - Descriptive Statistics KW - Midazolam -- Administration and Dosage KW - One-Way Analysis of Variance KW - Post Hoc Analysis KW - Rats KW - Time Factors KW - Valerian -- Administration and Dosage SP - 431 EP - 435 JO - AANA Journal JF - AANA Journal JA - AANA J VL - 75 IS - 6 CY - Park Ridge, Illinois PB - American Association of Nurse Anesthetists AB - Herbal use may be associated with increased morbidity and mortality as a consequence of interactions with anesthetic agents. The purpose of this study was to investigate the effects on emergence from isoflurane anesthesia using a combination of the herb valerian and midazolam compared with valerian alone, midazolam alone, and no additional drug-herb treatment in Sprague-Dawley rats. We assigned 32 male Sprague-Dawley rats to 1 of 4 groups: (1) isoflurane alone, (2) isoflurane plus valerian, (3) isoflurane plus midazolam, and (4) isoflurane plus a combination of valerian and midazolam. Thirty minutes after treatment, animals underwent a standard laparotomy. The time in seconds from discontinuation of isoflurane to the time the animal righted itself and took I step was recorded as emergence time. A 1-way analysis of variance with a post hoc Scheffe procedure revealed that animals given a combination of midazolam and valerian took significantly longer to emerge from anesthesia (F = 58.21; P < .00) compared with all other groups. Awareness of possible interactions of herbals with conventional anesthetics is important so that potential problems may be recognized and treated. These data demonstrate the need for continued research concerning the effects of herbals and their potential for interaction with anesthetics. SN - 0094-6354 AD - US Air Force Academy, Colorado U2 - PMID: 18179003. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105971184&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Pomeroy, Steven A. T1 - Science in Flux: NASA's Nuclear Program at Plum Brook Station, 1955-2005. JO - Air Power History JF - Air Power History J1 - Air Power History PY - 2007///Winter2007 Y1 - 2007///Winter2007 VL - 54 IS - 4 M3 - Book Review SP - 52 EP - 53 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "Science in Flux: NASA's Nuclear Program at Plum Brook Station, 1955-2005," by Mark D. Bowles. KW - SCIENCE in Flux: NASA's Nuclear Program at Plum Brook Station 1955-2005 (Book) KW - BOWLES, Mark D. KW - NUCLEAR industry KW - NONFICTION N1 - Accession Number: 27888494; Source Information: Winter2007, Vol. 54 Issue 4, p52; Subject Term: SCIENCE in Flux: NASA's Nuclear Program at Plum Brook Station 1955-2005 (Book); Subject Term: BOWLES, Mark D.; Subject Term: NUCLEAR industry; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=27888494&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Vibert, Dominique AU - Redfield, Robin C. AU - Häusler, Rudolf T1 - Benign Paroxysmal Positional Vertigo in Mountain Bikers. JO - Annals of Otology, Rhinology & Laryngology JF - Annals of Otology, Rhinology & Laryngology Y1 - 2007/12// VL - 116 IS - 12 M3 - Article SP - 887 EP - 890 SN - 00034894 AB - We evaluated 4 men who had benign paroxysmal positional vertigo (BPPV) that occurred several hours after intensive mountain biking but without head trauma. The positional maneuvers in the planes of the posterior and horizontal canals elicited BPPV, as well as transitory nystagmus. This was attributed to both the posterior and horizontal semicircular canals (SCCs) on the left side in 1 patient, in these 2 SCCs on the right side in another patient, and to the right posterior SCC in the other 2 patients. The symptoms disappeared after physiotherapeutic maneuvers in 2 patients and spontaneously in the other 2 patients. Cross-country or downhill mountain biking generates frequent vibratory impacts, which are only partially filtered through the suspension fork and the upper parts of the body. Biomechanically, during a moderate jump, before landing, the head is subjected to an acceleration close to negative 1g, and during impact it is subjected to an upward acceleration of more than 2g. Repeated acceleration-deceleration events during intensive off-road biking might generate displacement and/or dislocation of otoconia from the otolithic organs, inducing the typical symptoms of BPPV. This new cause of posttraumatic BPPV should be considered as an injury of minor severity attributed to the practice of mountain biking. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of Otology, Rhinology & Laryngology is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VERTIGO KW - DIZZINESS KW - HEAD injuries -- Complications KW - PATIENTS KW - PHYSICAL therapy KW - WOUNDS & injuries KW - benign paroxysmal positional vertigo KW - inner ear KW - mountain bike KW - otoconia KW - sport KW - vertigo N1 - Accession Number: 28095589; Vibert, Dominique 1; Redfield, Robin C. 2; Häusler, Rudolf 1; Source Information: Dec2007, Vol. 116 Issue 12, p887; Subject: VERTIGO; Subject: DIZZINESS; Subject: HEAD injuries -- Complications; Subject: PATIENTS; Subject: PHYSICAL therapy; Subject: WOUNDS & injuries; Author-Supplied Keyword: benign paroxysmal positional vertigo; Author-Supplied Keyword: inner ear; Author-Supplied Keyword: mountain bike; Author-Supplied Keyword: otoconia; Author-Supplied Keyword: sport; Author-Supplied Keyword: vertigo; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=28095589&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Wisman, D.L. AU - Marcum, S.D. AU - Ganguly, B.N. T1 - Electrical control of the thermodiffusive instability in premixed propane–air flames JO - Combustion & Flame JF - Combustion & Flame Y1 - 2007/12// VL - 151 IS - 4 M3 - Article SP - 639 EP - 648 SN - 00102180 AB - Abstract: This work focuses upon the effects of DC electric fields on the stability of downward propagating atmospheric pressure premixed propane–air flames under experimental conditions that provide close coupling of the electric field to the flame. With the appropriate electrode geometry, modest applied voltages are shown to drive a stable conical flame first into a wrinkled-laminar flamelet geometry, and then further toward either a highly unstable distributed flamelet regime or a collective oscillation of the flame front. Applied potentials up through over a 40-mm gap encompassing the flame front have been used to force the above transition sequence in flames with equivalence ratios between 0.8 and 1.3 and flow velocities up to 1.7 m/s. Experiments are reported that characterize the field-induced changes in the geometry of the reaction zone and the structure of the resulting unstable flame. The former is quantified by combustion intensity enhancement estimates derived from high-speed two-dimensional direct and spectroscopic imaging of chemiluminescence signals. The flame fluid mechanical response to the applied field, brought about by forcing positive flame ions counter to the flow, drives the effective flame Lewis number to values suitable for the onset of the thermodiffusive instability, even near stoichiometric conditions. Possible field-driven flame ion recombination chemistry that would produce light reactants near the burner head and precipitate the onset of the thermodiffusive instability is proposed. Electrical measurements are also reported that establish that minimal electrical power input is required to produce the observed flame instabilities. Current continuity-based calculations allow estimates of the level of deficient light reactant necessary to cause the flame to become unstable. This applied-electric-field-induced modification of the thermodiffusive effect could serve as a potentially attractive means of controlling flame fluid-mechanical characteristics and validating combustion instability models over a wide range of equivalence ratios. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Organic compounds KW - Electric fields KW - Electromagnetic fields KW - Diagnostic imaging KW - Electric field KW - Flame speed KW - Hydrocarbon combustion KW - Ionic recombination KW - Thermodiffusive instability N1 - Accession Number: 27641103; Wisman, D.L. 1; Marcum, S.D. 1; Ganguly, B.N. 2; Email Address: biswa.ganguly@wpafb.af.mil; Affiliations: 1: Department of Physics, Miami University, Oxford, OH 45056, USA; 2: Air Force Research Laboratory, Wright–Patterson AFB, OH 45433, USA; Issue Info: Dec2007, Vol. 151 Issue 4, p639; Thesaurus Term: Organic compounds; Subject Term: Electric fields; Subject Term: Electromagnetic fields; Subject Term: Diagnostic imaging; Author-Supplied Keyword: Electric field; Author-Supplied Keyword: Flame speed; Author-Supplied Keyword: Hydrocarbon combustion; Author-Supplied Keyword: Ionic recombination; Author-Supplied Keyword: Thermodiffusive instability; NAICS/Industry Codes: 621512 Diagnostic Imaging Centers; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.combustflame.2007.06.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=27641103&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - NEWS AU - Graham, Robert T1 - DEVELOPING METRICS FOR INCREASING GOVERNMENT CONTRACTING PERSONNEL. JO - Contract Management JF - Contract Management Y1 - 2007/12// VL - 47 IS - 12 M3 - Editorial SP - 40 EP - 47 SN - 01903063 AB - The author reflects on the need of more contracting personnel for the U.S. government. He argues that before the state has to declare any backlog of its work due to its lack of human resources, they must have to establish a variable metric that shows its necessity to add resources. The author suggested grounds or pillars for the government to undertake satisfying their acquiring additional force. KW - EMPLOYEE leasing services KW - HELP-wanted advertising KW - PERSONNEL management KW - UNITED States N1 - Accession Number: 27989276; Graham, Robert 1; Affiliations: 1: United States Air Force and Missile Center's Acquisition Center of Excellence; Issue Info: Dec2007, Vol. 47 Issue 12, p40; Thesaurus Term: EMPLOYEE leasing services; Thesaurus Term: HELP-wanted advertising; Thesaurus Term: PERSONNEL management; Subject: UNITED States; NAICS/Industry Codes: 561330 Professional Employer Organizations; NAICS/Industry Codes: 541612 Human Resources Consulting Services; NAICS/Industry Codes: 923130 Administration of Human Resource Programs (except Education, Public Health, and Veterans' Affairs Programs); Number of Pages: 8p; Illustrations: 3 Color Photographs; Document Type: Editorial UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=27989276&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Burton, Anthony AU - Carson, Katherine AU - Chilton, Susan AU - Hutchinson, W. T1 - Resolving questions about bias in real and hypothetical referenda. JO - Environmental & Resource Economics JF - Environmental & Resource Economics Y1 - 2007/12// VL - 38 IS - 4 M3 - Article SP - 513 EP - 525 PB - Springer Science & Business Media B.V. SN - 09246460 AB - Despite 10 years of research on behavior in hypothetical referenda, conflict remains in the literature on whether or not the mechanism generates biased responses compared to real referenda, and the nature and source of any such bias. Almost all previous inquiry in respect of this issue has concentrated on bias at the aggregate level. This paper reports a series of three experiments which focuses on bias at the individual level and how this can translate to bias at the aggregate level. The authors argue that only an individual approach to hypothetical bias is consistent with the concept of incentive compatibility. The results of these experiments reflect these previous conflicting findings but go on to show that individual hypothetical bias is a robust result driven by the differing influence of pure self-interest and other- regarding preferences in real and hypothetical situations, rather than by a single behavioral theory such as free riding. In a hypothetical situation these preferences cause yea-saying and non-demand revealing voting. This suggests that investigation of individual respondents in other hypothetical one-shot binary choices may also provide us with insights into aggregate behavior in these situations. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental & Resource Economics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Environmental economics KW - Referendum KW - Constitutional law KW - Representative government KW - Discrimination KW - Social psychology KW - Self-interest KW - C91 KW - Demand revelation KW - Experimental economics KW - Hypothetical bias KW - Hypothetical referenda KW - Non-market valuation KW - Q51 KW - Real referenda N1 - Accession Number: 27455584; Burton, Anthony 1; Carson, Katherine 2; Email Address: Kate.Carson@usafa.af.mil; Chilton, Susan 3; Email Address: S.M.Chilton@ncl.ac.uk; Hutchinson, W. 4; Email Address: G.Hutchinson@qub.ac.uk; Affiliations: 1: Department of Health , London UK; 2: Department of Economics and Geography , United States Air Force Academy , Colorado Springs USA; 3: Business School , University of Newcastle upon Tyne , Newcastle UK; 4: Gibson Institute , Queen’s University , Room 1209, David Keir Building, Stranmillis Road Belfast BT9 5AG UK; Issue Info: Dec2007, Vol. 38 Issue 4, p513; Thesaurus Term: Environmental economics; Subject Term: Referendum; Subject Term: Constitutional law; Subject Term: Representative government; Subject Term: Discrimination; Subject Term: Social psychology; Subject Term: Self-interest; Author-Supplied Keyword: C91; Author-Supplied Keyword: Demand revelation; Author-Supplied Keyword: Experimental economics; Author-Supplied Keyword: Hypothetical bias; Author-Supplied Keyword: Hypothetical referenda; Author-Supplied Keyword: Non-market valuation; Author-Supplied Keyword: Q51; Author-Supplied Keyword: Real referenda; Number of Pages: 13p; Illustrations: 8 Charts; Document Type: Article L3 - 10.1007/s10640-007-9095-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=27455584&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Kim, Kristopher T. T1 - Efficient Recursive Generation of the Scalar Spherical Multipole Translation Matrix. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2007/12// Y1 - 2007/12// VL - 55 IS - 12 M3 - Article SP - 3484 EP - 3494 SN - 0018926X AB - New efficient recursive procedures for generating the translation matrix of the scalar spherical multipole field are describd. They are based on a new set of recurrence relations that resuit when the angular-momentum operator is applied to the spherical multipole field. Their efficiency and accuracy are compared analytically and through a computer experiment with those of the brute-force method and an existing recursive procedure. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNAS (Electronics) KW - RECURSIVE functions KW - SCATTERING (Physics) KW - ELECTROMAGNETIC fields KW - ANTENNA radiation patterns KW - ELECTRIC fields KW - DATA transmission systems KW - ANTENNAS (Electronics) -- Design & construction KW - TELECOMMUNICATION N1 - Accession Number: 27973831; Source Information: Dec2007, Vol. 55 Issue 12, p3484; Subject Term: ANTENNAS (Electronics); Subject Term: RECURSIVE functions; Subject Term: SCATTERING (Physics); Subject Term: ELECTROMAGNETIC fields; Subject Term: ANTENNA radiation patterns; Subject Term: ELECTRIC fields; Subject Term: DATA transmission systems; Subject Term: ANTENNAS (Electronics) -- Design & construction; Subject Term: TELECOMMUNICATION; Subject Term: ; Number of Pages: 11p; ; Document Type: Article; L3 - 10.1109/TAP.2007.910358 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=27973831&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - McClory, John W. AU - Petrosky, James C. AU - Sattler, James M. AU - Jarzen, Thomas A. T1 - An Analysis of the Effects of Low-Energy Electron Irradiation of A1GaN/GaN HFETs. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2007/12//Dec2007 Part 1 of 2 VL - 54 IS - 6 M3 - Article SP - 1946 EP - 1952 SN - 00189499 AB - The effects of low energy (0.45 MeV) electron radiation on the gate and drain currents of Al0.27 Ga0.73N/GaN HFETs are investigated using IV and CV measurements. Following irradiation, the gate and drain currents increase at low temperatures and reach a saturation level. The gate leakage currents do not fully account for the drain current increase. Following a room temperature anneal, the gate and drain currents return to pre-irradiation levels. These results are explained by the buildup of positive charge in the AlGaN layer at low temperature and traps formed via a complexing precursor in the AlGaN layer near the interface. The positive charge increases the carrier concentration in the 2DEG and hence the drain current. The traps act as trap-assisted-tunneling centers that increase the gate leakage current. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Radiation KW - Irradiation KW - Electrons KW - Gallium nitride KW - Field-effect transistors KW - Transistors KW - Electron irradiation KW - gallium nitride KW - heterojunction field effect transistors N1 - Accession Number: 28153153; McClory, John W. 1; Email Address: john.mcclory@afit.edu; Petrosky, James C. 2; Email Address: james.petrosky@afit.edu; Sattler, James M. 3; Email Address: James.Sattler@hanscom.af.mil; Jarzen, Thomas A. 4; Email Address: thomas.jarzen@us.army.mil; Affiliations: 1: United States Army and the Air Force Institute of Technology, WPAFB, OH 45322 USA; 2: Air Force Institute of Technology, WPAFB, 01-145322 USA; 3: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA 01731-2301 USA; 4: Defense Threat Reduction Agency, Fort Belvoir, VA 22060 USA; Issue Info: Dec2007 Part 1 of 2, Vol. 54 Issue 6, p1946; Thesaurus Term: Radiation; Thesaurus Term: Irradiation; Subject Term: Electrons; Subject Term: Gallium nitride; Subject Term: Field-effect transistors; Subject Term: Transistors; Author-Supplied Keyword: Electron irradiation; Author-Supplied Keyword: gallium nitride; Author-Supplied Keyword: heterojunction field effect transistors; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 7p; Illustrations: 3 Diagrams, 2 Charts, 8 Graphs; Document Type: Article L3 - 10.1109/TNS.2007.910121 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=28153153&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Ginet, Gregory P. AU - Dichter, Bronislaw K. AU - Brautigam, Donald H. AU - Madden, Dan T1 - Proton Flux Anisotropy in Low Earth Orbit. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2007/12//Dec2007 Part 1 of 2 VL - 54 IS - 6 M3 - Article SP - 1975 EP - 1980 SN - 00189499 AB - Proton flux anisotropy as a function of altitude in the South Atlantic Anomaly is investigated using data from the Compact Environment Anomaly Sensor (CEASE) flown onboard the Tri-Service Experiment-S (TSX-5) satellite from June 2000 to July 2006. In a 410 km × 1710 km, 69 degree inclination orbit, TSX-5 spanned a broad range of the low Earth orbit regime. Using measurements of total dose, integral energy flux >40 MeV and the differential flux at 40 MeV sorted into 3 degree latitude × 3 degree longitude × 50 km altitide bins and averaged over the entire mission, the components arising from eastward and westward traveling protons have been determined in areas of the SAA where CEASE detection efficiency is not compromised. For the first time, ratios of these components have been compared to predictions of East-West effect models above 400 km. There is good agreement in general with the anisotropy becoming apparent at approximately 1200 km (moving down) and increasing rapidly starting at approximately 1000 km, the magnitude and rate depending on location within the anomaly. Measurements of the differential flux at 40 MeV are compared to predictions of standard radiation belt models as a function of altitude and found to be substantially higher in magnitude than AP8, though a comprehensive survey has not yet been performed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Anisotropy KW - Earth (Planet) -- Orbit KW - Orbits KW - Protons KW - Radiation belts KW - Astrophysical radiation KW - radiation effects KW - South Atlantic anomaly N1 - Accession Number: 28153157; Ginet, Gregory P. 1; Email Address: afrl.rvb.pa@hanscom.af.mil; Dichter, Bronislaw K. 2; Email Address: dichter@assurtech.com; Brautigam, Donald H. 1; Email Address: afrl.rvb.pa@hanscom.af.mil; Madden, Dan 3; Email Address: afrl.rvb.pa@hanscom.af.mil; Affiliations: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731 USA; 2: Assurance Technology Corporation, Carlisle, MA 01741 USA; 3: Institute for Scientific Research, Boston College, Boston, MA 02467 USA; Issue Info: Dec2007 Part 1 of 2, Vol. 54 Issue 6, p1975; Thesaurus Term: Anisotropy; Subject Term: Earth (Planet) -- Orbit; Subject Term: Orbits; Subject Term: Protons; Subject Term: Radiation belts; Subject Term: Astrophysical radiation; Author-Supplied Keyword: radiation effects; Author-Supplied Keyword: South Atlantic anomaly; Number of Pages: 6p; Illustrations: 7 Graphs; Document Type: Article L3 - 10.1109/TNS.2007.910041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=28153157&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Krause, Linda Habash AU - Cooke, David L. AU - Enloe, C. L. AU - Font, Gabriel I. AU - Lai, Shu T. AU - McHarg, M. G. AU - Putz, Victor T1 - Bootstrap Surface Charging at GEO: Modeling and On-Orbit Observations From the DSCS-III B7 Satellite. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2007/12//Dec2007 Part 1 of 2 VL - 54 IS - 6 M3 - Article SP - 1997 EP - 2003 SN - 00189499 AB - We present an analysis of the charging interactivity between surrounding surface materials aboard a spacecraft at geosynchronous altitudes. In particular, bootstrap charging of a small surface may occur if is surrounded by a large negatively charged surface. Here, a negative potential barrier forms above the small surface, resulting in suppression of photo- and secondary electron emission from that surface. Additionally, the small sur- face experiences an enhancement of the collection of the photo- and secondary electrons emitted from the surrounding surface. This mechanism results in the charging of the small surface to higher levels than that of the patch in isolation, and in many cases the final potential will reach that of the potential of the larger surrounding surface. With this study we examine bootstrap charging behavior with model data and with data collected on orbit. We have modeled the DSCS-III B7 geosynchronous satellite with realistic geometry and spacecraft materials. Additionally, a previous study has shown that bootstrap charging has been observed on the DSCS-III B7 geosynchronous spacecraft. Both Astroquartz and Kapton cloth patches charged up to the frame potential of the satellite during periods of severe frame charging. The results of modeling bootstrap charging of a small Kapton patch floating relative to the DSCS-HI frame fixed at a potential of -1,000 V show that the patch will indeed charge up negatively to match the frame potential, with the temporal increase in negative potential following an exponential time characteristic. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Space vehicles KW - Electron emission KW - Electric discharges through gases KW - Orbits KW - Geostationary satellites KW - Artificial satellites KW - Bootstrap charging KW - Defense Satellite Communication System (DSCS-III) KW - differential charging KW - GEO satellite charging KW - spacecraft surface charging N1 - Accession Number: 28153161; Krause, Linda Habash 1; Email Address: Linda.Krause@usafa.af.mil; Cooke, David L. 2; Enloe, C. L. 1; Font, Gabriel I. 1; Lai, Shu T. 2; McHarg, M. G. 1; Putz, Victor 3; Affiliations: 1: Department of Physics, USAF Academy, United States Air Force Academy, CO 80840 USA; 2: Air Force Research Laboratory, Hanscom AFB, MA 01731 USA; 3: Oxford University, Oxford OX1 2JD, U.K.; Issue Info: Dec2007 Part 1 of 2, Vol. 54 Issue 6, p1997; Subject Term: Space vehicles; Subject Term: Electron emission; Subject Term: Electric discharges through gases; Subject Term: Orbits; Subject Term: Geostationary satellites; Subject Term: Artificial satellites; Author-Supplied Keyword: Bootstrap charging; Author-Supplied Keyword: Defense Satellite Communication System (DSCS-III); Author-Supplied Keyword: differential charging; Author-Supplied Keyword: GEO satellite charging; Author-Supplied Keyword: spacecraft surface charging; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 7p; Illustrations: 4 Black and White Photographs, 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1109/TNS.2007.909911 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=28153161&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hubbs, John E. AU - Marshal, Paul W. AU - Marshall, Cheryl J. AU - Gramer, Mark E. AU - Maestas, Diana AU - Garcia, John P. AU - Dole, Gary A. AU - Anderson, Amber A. T1 - Lateral Diffusion Length Changes in HgCdTe Detectors in a Proton Environment. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2007/12//Dec2007 Part 1 of 2 VL - 54 IS - 6 M3 - Article SP - 2435 EP - 2443 SN - 00189499 AB - This paper presents a study of the performance degradation in a proton environment of long wavelength infrared (LWIR) HgCdTe detectors. The energy dependence of the Non-Ionizing Energy Loss (NIEL) in HgCdTe provides a framework for estimating the responsivity degradation in LWIR HgCdTe detectors due to on-orbit exposure from protons. Banded detector arrays of different detector designs were irradiated at proton energies of 7, 12, and 63 MeV. These banded detector arrays allowed insight into how the fundamental detector parameters degraded in a proton environment at the three different proton energies. Measured data demonstrated that the detector responsivity degradation at 7 MeV is 5 times larger than the degradation at 63 MeV. Comparison of the responsivity degradation at the different proton energies suggests that the atomic Columbic interaction of the protons with the HgCdTe detector is likely the primary mechanism responsible for the degradation in responsivity at proton energies below 30 MeV. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Ionizing radiation KW - Radiation KW - Radiation exposure KW - Protons KW - Energy dissipation KW - Detectors KW - HgCdTe detectors KW - Non-Ionizing Energy Loss (NIEL) KW - proton radiation effects N1 - Accession Number: 28153223; Hubbs, John E. 1; Email Address: jhubbs@ieee.org; Marshal, Paul W. 2; Email Address: pwmarshall@aol.com; Marshall, Cheryl J. 3; Email Address: cmarshal2@aol.com; Gramer, Mark E. 1; Maestas, Diana 1; Garcia, John P. 1; Dole, Gary A. 1; Anderson, Amber A. 4; Email Address: amber.anderson@kirtland.af.mil; Affiliations: 1: Ball Aerospace & Technologies Corp., Albuquerque, NM 87185 USA; 2: Consultant, Brookneal, VA 24528 USA; 3: NASA Goddard Space Flight Center, Greenbelt, MD 20771 USA; 4: Space Vehicles Directorate of the Air Force Research Laboratory (AFRL/VSSS) Kirtland AFB, NM 87117 USA; Issue Info: Dec2007 Part 1 of 2, Vol. 54 Issue 6, p2435; Thesaurus Term: Ionizing radiation; Thesaurus Term: Radiation; Thesaurus Term: Radiation exposure; Subject Term: Protons; Subject Term: Energy dissipation; Subject Term: Detectors; Author-Supplied Keyword: HgCdTe detectors; Author-Supplied Keyword: Non-Ionizing Energy Loss (NIEL); Author-Supplied Keyword: proton radiation effects; Number of Pages: 9p; Illustrations: 1 Black and White Photograph, 1 Diagram, 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1109/TNS.2007.910329 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=28153223&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Morton, Yu T. AU - Miller, Mikel AU - Tsui, James AU - David Lin AU - Qihou Zhou T1 - GPS Civil Signal Self-Interference Mitigation During Weak Signal Acquisition. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing J1 - IEEE Transactions on Signal Processing PY - 2007/12// Y1 - 2007/12// VL - 55 IS - 12 M3 - Article SP - 5859 EP - 5863 SN - 1053587X AB - Current global positioning system receivers can acquire weak satellite signals with C/N0 = 15 dB/Hz if there is no self-interference from other strong satellite signals. This correspondence presents a computational efficient partitioned subspace projection method to mitigate the self-interference. The method is evaluated using simulated signals and a block-based weak signal acquisition algorithm. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HOUSEHOLD electronics KW - GLOBAL Positioning System KW - ARTIFICIAL satellites KW - ARTIFICIAL satellites in navigation KW - TELECOMMUNICATION KW - ELECTRONIC pulse techniques KW - DIGITAL electronics KW - WIRELESS communication systems KW - DIGITAL media N1 - Accession Number: 27885820; Source Information: Dec2007, Vol. 55 Issue 12, p5859; Subject Term: HOUSEHOLD electronics; Subject Term: GLOBAL Positioning System; Subject Term: ARTIFICIAL satellites; Subject Term: ARTIFICIAL satellites in navigation; Subject Term: TELECOMMUNICATION; Subject Term: ELECTRONIC pulse techniques; Subject Term: DIGITAL electronics; Subject Term: WIRELESS communication systems; Subject Term: DIGITAL media; Subject Term: ; Number of Pages: 5p; ; Document Type: Article; L3 - 10.1109/TSP.2007.900761 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=27885820&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - GOLDSTEIN, NEIL AU - VUJKOVIC-CVIJIN, PAJO AU - FOX, MARSHA AU - ADLER-GOLDEN, STEVEN AU - CLINE, JASON AU - GREGOR, BRIAN AU - LEE, JAMINE AU - SAMUELS, ALAN C. AU - HIGBEE, SHAWN D. AU - BECKER, LATIKA S. AU - OOI, TENG T1 - PROGRAMMABLE ADAPTIVE SPECTRAL IMAGERS FOR MISSION-SPECIFIC APPLICATION IN CHEMICAL/BIOLOGICAL SENSING. JO - International Journal of High Speed Electronics & Systems JF - International Journal of High Speed Electronics & Systems Y1 - 2007/12// VL - 17 IS - 4 M3 - Article SP - 749 EP - 760 SN - 01291564 AB - An innovative passive standoff system for the detection of chemical/biological agents is described. The spectral, temporal and spatial resolution of the data collected are all adjustable in real time, making it possible to keep the tradeoff between the sensor operating parameters at optimum at all times. The instrument contains no macro-scale moving parts and is therefore an excellent candidate for the development of a robust, compact, lightweight and low-power-consumption sensor. The design can also serve as a basis for a wide variety of spectral instruments operating in the visible, NIR, MWIR, and LWIR to be used for surveillance, process control, and biomedical applications. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of High Speed Electronics & Systems is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REMOTE sensing KW - DETECTORS KW - ELECTRONIC apparatus & appliances KW - ENGINEERING instruments KW - PHYSICS instruments KW - chemical/biological KW - remote sensing KW - spectral imaging N1 - Accession Number: 27265419; GOLDSTEIN, NEIL 1; Email Address: neil@spectral.com; VUJKOVIC-CVIJIN, PAJO 1; FOX, MARSHA 1; ADLER-GOLDEN, STEVEN 1; CLINE, JASON 1; GREGOR, BRIAN 1; LEE, JAMINE 1; SAMUELS, ALAN C. 2; HIGBEE, SHAWN D. 3; BECKER, LATIKA S. 4; OOI, TENG 5,6; Affiliations: 1: Spectral Sciences, Inc., 4, 4th Avenue, Burlington, MA 01803, USA; 2: Edgewood Chemical Biological Center, AMSRD-ECP-RT-DP(Building E3330/56), 5183 Blackhawk Road, Edgewood Area, Aberdeen Proving Ground, MD 21010-5424, USA; 3: Air Force Research Laboratory, 29 Randolph Road, Hanscom AFB, MA 01730, USA; 4: USA SMDC, P.O. Box 1500, Huntsville, AL 36907, USA; 5: US Army Aviation and Missile Research, Development, and Engineering Center, Redstone Arsenal, AL 35898, USA; 6: Department of Aeronautics and Astronautics, Stanford University, Stanford, CA 9430, USA; Issue Info: Dec2007, Vol. 17 Issue 4, p749; Subject Term: REMOTE sensing; Subject Term: DETECTORS; Subject Term: ELECTRONIC apparatus & appliances; Subject Term: ENGINEERING instruments; Subject Term: PHYSICS instruments; Author-Supplied Keyword: chemical/biological; Author-Supplied Keyword: remote sensing; Author-Supplied Keyword: spectral imaging; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 12p; Illustrations: 3 Diagrams, 6 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=27265419&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Pickard-Gabriel, C. Jesse AU - Ledford, Cheryl L. AU - Gajewski, Donald A. AU - Granville, Robert R. AU - Andersen, Romney C. T1 - Traumatic Transfemoral Amputation with Concomitant Ipsilateral Proximal Femoral Fracture. JO - Journal of Bone & Joint Surgery, American Volume JF - Journal of Bone & Joint Surgery, American Volume Y1 - 2007/12// VL - 89 IS - 12 M3 - Article SP - 2764 EP - 2768 SN - 00219355 AB - The article presents a case report of traumatic transfemoral amputation with concomitant ipsilateral proximal femoral fracture in a 28-year-old male soldier. The medical history of the patient and the details of the surgical procedure are provided. The paper also provides relevant photographs and diagrams. KW - FEMUR -- Wounds & injuries KW - AMPUTATION KW - ORTHOPEDIC surgery KW - FRACTURES KW - BONE surgery N1 - Accession Number: 31710475; Pickard-Gabriel, C. Jesse 1; Email Address: S8CPickardGabriel@U5UHS.mil; Ledford, Cheryl L. 2; Gajewski, Donald A. 2; Granville, Robert R. 2; Andersen, Romney C. 2; Source Information: Dec2007, Vol. 89 Issue 12, p2764; Subject: FEMUR -- Wounds & injuries; Subject: AMPUTATION; Subject: ORTHOPEDIC surgery; Subject: FRACTURES; Subject: BONE surgery; Number of Pages: 5p; Illustrations: 2 Color Photographs; Document Type: Article L3 - 10.2106/JBJS.G.00229 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=31710475&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 105894691 T1 - Traumatic transfemoral amputation with concomitant ipsilateral proximal femoral fracture. A report of two cases. AU - Pickard-Gabriel CJ AU - Ledford CL AU - Gajewski DA AU - Granville RR AU - Andersen RC AU - Pickard-Gabriel, C Jesse AU - Ledford, Cheryl L AU - Gajewski, Donald A AU - Granville, Robert R AU - Andersen, Romney C Y1 - 2007/12// N1 - Accession Number: 105894691. Language: English. Entry Date: 20080418. Revision Date: 20160517. Publication Type: journal article. Journal Subset: Biomedical; Blind Peer Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Perioperative Care. NLM UID: 0014030. KW - Amputation, Traumatic -- Surgery KW - Blast Injuries -- Surgery KW - Femoral Fractures -- Surgery KW - Fracture Fixation -- Methods KW - Adult KW - Amputation, Traumatic -- Complications KW - Amputation, Traumatic -- Etiology KW - Blast Injuries -- Complications KW - Debridement KW - Femoral Fractures -- Complications KW - Femoral Fractures -- Etiology KW - Therapeutic Irrigation KW - Male KW - Ossification, Heterotopic -- Etiology KW - Ossification, Heterotopic -- Surgery SP - 2764 EP - 2768 JO - Journal of Bone & Joint Surgery, American Volume JF - Journal of Bone & Joint Surgery, American Volume JA - J BONE JOINT SURG (AM) VL - 89 IS - 12 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 0021-9355 AD - Medical Service Corps, United States Air Force Reserve, 6608 14th Street N.W. #201, Washington, DC 20012, USA AD - Medical Service Corps, United States Air Force Reserve, 6608 14th Street N.W. #201, Washington, DC 20012; S8CPickardGabriel@USUHS.mil U2 - PMID: 18056511. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105894691&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Lopez Jr., Juan AU - Raines, Richard A. AU - Temple, Michael A. AU - Baldwin, Rusty O. AU - Stephens Sr., James P. T1 - An investigation on the effects of emerging 4G transmissions on 3G networks JO - Omega JF - Omega Y1 - 2007/12// VL - 35 IS - 6 M3 - Article SP - 706 EP - 714 SN - 03050483 AB - Abstract: Within the last 10 years, technological advances have allowed personal wireless communications to become part of our global, information-centric culture. Cellular telephones, personal digital assistants, and wireless computer networks allow for tetherless use anytime and almost anywhere. These wireless communication advances have quickly matured through three technological generations. Currently, wireless communications are considered to be in the third generation (3G) of deployment and are rapidly approaching the fourth (4G). As these wireless technologies advance to meet market demand, careful pre-market technical analysis of these new capabilities must be made to understand potential impact on existing communication systems. This paper provides a novel examination into the effects of 4G ultrawide band (UWB) signaling on a 3G wireless fidelity (WiFi) system. Through empirical and statistical analyses, we show that the throughput performance of the Wi-Fi system can be negatively impacted by up to 20%. We conclude that careful implementation of emerging 4G UWB systems must occur to mitigate the detriments to existing 3G communication systems. [Copyright &y& Elsevier] AB - Copyright of Omega is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TELECOMMUNICATION KW - CELL phones KW - TECHNOLOGICAL innovations KW - WIRELESS communication systems KW - 3G KW - 4G KW - Telecommunications KW - UWB KW - WiFi KW - Wireless communications N1 - Accession Number: 24194441; Lopez Jr., Juan 1; Raines, Richard A. 2; Email Address: richard.raines@afit.edu; Temple, Michael A. 2; Baldwin, Rusty O. 2; Stephens Sr., James P. 3; Affiliations: 1: United States Marine Corp, Norfolk, VA, USA; 2: Department of Electrical and Computer Engineering, Air Force Institute of Technology, 2950 Hobson Way, Bldg 642, Wright Patterson AFB, OH 45433-7765, USA; 3: Sensors Directorate, Air Force Research Laboratory, 2241 Avionics Circle, Wright-Patterson AFB, OH 45433-7333, USA; Issue Info: Dec2007, Vol. 35 Issue 6, p706; Thesaurus Term: TELECOMMUNICATION; Thesaurus Term: CELL phones; Thesaurus Term: TECHNOLOGICAL innovations; Thesaurus Term: WIRELESS communication systems; Author-Supplied Keyword: 3G; Author-Supplied Keyword: 4G; Author-Supplied Keyword: Telecommunications; Author-Supplied Keyword: UWB; Author-Supplied Keyword: WiFi; Author-Supplied Keyword: Wireless communications; NAICS/Industry Codes: 517919 All Other Telecommunications; NAICS/Industry Codes: 517911 Telecommunications Resellers; NAICS/Industry Codes: 517910 Other telecommunications; NAICS/Industry Codes: 811213 Communication Equipment Repair and Maintenance; NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); NAICS/Industry Codes: 443142 Electronics Stores; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.omega.2006.03.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=24194441&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR T1 - Snatch Skill Transfer Exercises. AU - Blackwood, Buck JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) Y1 - 2007/12// VL - 29 IS - 6 SP - 62 EP - 66 SN - 15241602 N1 - Accession Number: 28106464; Author: Blackwood, Buck: 1 ; Author Affiliation: 1 United States Air Force Academy, Colorado Springs, Colorado.; No. of Pages: 5; Language: English; Publication Type: Article; Update Code: 20080214 N2 - Many coaches exclude snatches because of technical and time demands. The inclusion of progressive snatch skill transfer exercises can accelerate the snatch learning process. ABSTRACT FROM AUTHOR KW - *WEIGHT lifting -- Coaching KW - *WEIGHT training KW - *MOTOR ability KW - *BARBELLS KW - *PHYSICAL education KW - *EXERCISE KW - power snatch KW - snatch KW - snatch skill transfer exercises UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=28106464&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 105864873 T1 - Snatch skill transfer exercises. AU - Blackwood B Y1 - 2007/12// N1 - Accession Number: 105864873. Language: English. Entry Date: 20080321. Revision Date: 20150818. Publication Type: Journal Article; pictorial. Journal Subset: Allied Health; Peer Reviewed; USA. Special Interest: Physical Therapy. NLM UID: 100888833. KW - Weight Lifting -- Methods KW - Athletic Training SP - 62 EP - 66 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 29 IS - 6 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. AB - Many coaches exclude snatches because of technical and time demands. The inclusion of progressive snatch skill transfer exercises can accelerate the snatch learning process. SN - 1524-1602 AD - US Air Force Academy, Colorado Springs, Colorado UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105864873&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2007-19418-001 AN - 2007-19418-001 AU - Davis, Joanne L. AU - Byrd, Patricia AU - Rhudy, Jamie L. AU - Wright, David C. T1 - Characteristics of chronic nightmares in a trauma-exposed treatment-seeking sample. JF - Dreaming JO - Dreaming JA - Dreaming Y1 - 2007/12// VL - 17 IS - 4 SP - 187 EP - 198 CY - US PB - Educational Publishing Foundation SN - 1053-0797 SN - 1573-3351 AD - Davis, Joanne L., University of Tulsa, 600 South College Avenue, Tulsa, OK, US, 74104 N1 - Accession Number: 2007-19418-001. Partial author list: First Author & Affiliation: Davis, Joanne L.; Department of Psychology, University of Tulsa, Tulsa, OK, US. Other Publishers: Human Sciences Press, Inc.; Kluwer Academic/Human Sciences Press. Release Date: 20080107. Correction Date: 20160616. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Conference Information: Annual meeting of the Association for the Advancement of Behavior Therapy. Conference Note: Portions of this article were presented at the aforementioned conference, and at the annual meetings of the Oklahoma Psychological Association and the Disaster Mental Health Institute. Major Descriptor: Nightmares; Posttraumatic Stress Disorder; Trauma. Minor Descriptor: Chronicity (Disorders); Distress; Health Care Seeking Behavior. Classification: Neuroses & Anxiety Disorders (3215). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Structured Clinical Interview for DSM-IV: PTSD Module; Trauma Related Nightmare Survey; Beck Depression Inventory–II DOI: 10.1037/t00742-000; Clinician-Administered PTSD Scale DOI: 10.1037/t00072-000; Pittsburgh Sleep Quality Index DOI: 10.1037/t05178-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: Dec, 2007. Copyright Statement: American Psychological Association. 2007. AB - Chronic nightmares pose a significant problem for many individuals affected by trauma. The present study attempts to extend current knowledge on the nature, characteristics, and associated sequelae of chronic nightmares. Data were collected from 94 trauma-exposed, treatment-seeking participants (74 women and 20 men). These data suggest that most participants reported their nightmares to be similar or dissimilar to their traumatic experience rather than exact replications (replicative). Not surprisingly, though, nightmare-related distress was positively related to the degree of similarity between their nightmare and their trauma, with replicative nightmares eliciting the greatest distress. Persons with a current diagnosis of posttraumatic stress disorder (PTSD) were more likely to report problems related to nightmares and sleep disturbance than persons without current PTSD. Nonetheless, even after controlling for PTSD-related symptomatology, frequency and severity of nightmares significantly predicted some distress outcomes (e.g., poor sleep quality), suggesting that nightmares contribute to psychological distress above and beyond PTSD symptoms. Implications for future research, and for the treatment of nightmares and PTSD, are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - nightmares KW - posttraumatic stress disorder KW - trauma KW - nightmare-related distress KW - treatment-seeking KW - 2007 KW - Nightmares KW - Posttraumatic Stress Disorder KW - Trauma KW - Chronicity (Disorders) KW - Distress KW - Health Care Seeking Behavior KW - 2007 U1 - Sponsor: Oklahoma Center for the Advancement of Science and Technology. Grant: HR02-002S. Other Details: OHRS award. Recipients: No recipient indicated U1 - Sponsor: Psi Chi National Honor Society. Recipients: No recipient indicated U1 - Sponsor: University of Tulsa, Office of Research and Sponsored Programs. Recipients: No recipient indicated DO - 10.1037/1053-0797.17.4.187 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-19418-001&site=ehost-live&scope=site UR - Joanne-davis@utulsa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-19508-026 AN - 2007-19508-026 AU - Mastroianni, George R. T1 - Zimbardo's apple. JF - Analyses of Social Issues and Public Policy (ASAP) JO - Analyses of Social Issues and Public Policy (ASAP) JA - Anal Soc Issues Public Policy Y1 - 2007/12// VL - 7 IS - 1 SP - 251 EP - 254 CY - United Kingdom PB - Blackwell Publishing SN - 1529-7489 SN - 1530-2415 AD - Mastroianni, George R. N1 - Accession Number: 2007-19508-026. Partial author list: First Author & Affiliation: Mastroianni, George R.; United States Air Force Academy, Colorado Springs, CO, US. Other Publishers: Wiley-Blackwell Publishing Ltd. Release Date: 20080107. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Review-Book. Language: English. Major Descriptor: Behavior Problems; Evil; Morality; Political Psychology; Psychodynamics. Minor Descriptor: Behavior Disorders; Prisoners; Prisons; Systems Analysis. Classification: Behavior Disorders & Antisocial Behavior (3230). Population: Human (10). Reviewed Item: Zimbardo, Phillip G. The Lucifer effect: Understanding how good people turn evil=New York: Random House, (551 pp.) $27.95; 2007. References Available: Y. Page Count: 4. Issue Publication Date: Dec, 2007. AB - Reviews the book, The Lucifer effect; Understanding how good people turn evil by Phillip G. Zimbardo (see record [rid]2007-04177-000[/rid]). This book begins with a detailed recounting of the Stanford Prison Experiment. The author has made a major contribution to the field by including this new information, which will hopefully stimulate a significant re-consideration of the lessons of the Stanford study. This book is not an attempt to level with ourselves about how good people turn evil, or even why people sometimes behave evilly. It is a morality play in which the villains have been chosen well, the heroes badly. The Person, Situation, and System, insofar as they represent individual, social, and organizational/political levels of analysis, could indeed guide us to a balanced understanding of what happened at Abu Ghraib, but unfortunately, such an analysis will not be found in this book. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Lucifer effect KW - evil KW - good people KW - Stanford prison experiment KW - situations KW - systems KW - 2007 KW - Behavior Problems KW - Evil KW - Morality KW - Political Psychology KW - Psychodynamics KW - Behavior Disorders KW - Prisoners KW - Prisons KW - Systems Analysis KW - 2007 U2 - Zimbardo, Phillip G. (2007); The Lucifer effect: Understanding how good people turn evil; New York: Random House, (551 pp.) $27.95; 978-1-4000-6411-3. DO - 10.1111/j.1530-2415.2007.00142.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-19508-026&site=ehost-live&scope=site UR - George.Mastroianni@usafa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-18141-004 AN - 2007-18141-004 AU - Wilson, Glenn F. AU - Russell, Christopher A. T1 - Performance enhancement in an uninhabited air vehicle task using psychophysiologically determined adaptive aiding. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2007/12// VL - 49 IS - 6 SP - 1005 EP - 1018 CY - US PB - Human Factors & Ergonomics Society SN - 0018-7208 SN - 1547-8181 AD - Wilson, Glenn F., Physiometrex, 2845 Poplar Dr., Springfield, OH, US, 45504 N1 - Accession Number: 2007-18141-004. PMID: 18074700 Partial author list: First Author & Affiliation: Wilson, Glenn F.; Air Force Research Laboratory, Wright Patterson Air Force Base, OH, US. Other Publishers: Sage Publications. Release Date: 20071210. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Adjustment; Automation; Psychophysiology; Task Analysis; Work Load. Minor Descriptor: Aerospace Personnel; Aircraft; Human Factors Engineering; Performance. Classification: Human Factors Engineering (4010). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 14. Issue Publication Date: Dec, 2007. AB - Objective: We show that psychophysiologically driven real-time adaptive aiding significantly enhances performance in a complex aviation task. A further goal was to assess the importance of individual operator capabilities when providing adaptive aiding. Background: Psychophysiological measures are useful for monitoring cognitive workload in laboratory and real-world settings. They can be recorded without intruding into task performance and can be analyzed in real time, making them candidates for providing operator functional state estimates. These estimates could be used to determine if and when system intervention should be provided to assist the operator to improve system performance. Methods: Adaptive automation was implemented while operators performed an uninhabited aerial vehicle task. Psychophysiological data were collected and an artificial neural network was used to detect periods of high and low mental workload in real time. The high-difficulty task levels used to initiate the adaptive automation were determined separately for each operator, and a group-derived mean difficulty level was also used. Results: Psychophysiologically determined aiding significantly improved performance when compared with the no-aiding conditions. Improvement was greater when adaptive aiding was provided based on individualized criteria rather than on group-derived criteria. The improvements were significantly greater than when the aiding was randomly provided. Conclusion: These results show that psychophysiologically determined operator functional state assessment in real time led to performance improvement when included in closed loop adaptive automation with a complex task. Application: Potential future applications of this research include enhanced workstations using adaptive aiding that would be driven by operator functional state. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - air vehicle task KW - task performance KW - psychophysiology KW - mental workload KW - adaptive automation KW - 2007 KW - Adjustment KW - Automation KW - Psychophysiology KW - Task Analysis KW - Work Load KW - Aerospace Personnel KW - Aircraft KW - Human Factors Engineering KW - Performance KW - 2007 DO - 10.1518/001872007X249875 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-18141-004&site=ehost-live&scope=site UR - glennwilson@woh.rr.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-18141-011 AN - 2007-18141-011 AU - Patterson, Robert AU - Winterbottom, Marc AU - Pierce, Byron AU - Fox, Robert T1 - Binocular rivalry and head-worn displays. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2007/12// VL - 49 IS - 6 SP - 1083 EP - 1096 CY - US PB - Human Factors & Ergonomics Society SN - 0018-7208 SN - 1547-8181 AD - Patterson, Robert, Department of Psychology, Washington State University, Pullman, WA, US, 99164-4820 N1 - Accession Number: 2007-18141-011. PMID: 18074707 Partial author list: First Author & Affiliation: Patterson, Robert; Department of Psychology, Washington State University, Pullman, WA, US. Other Publishers: Sage Publications. Release Date: 20071210. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Binocular Vision; Computer Peripheral Devices; Human Factors Engineering; Visual Displays. Minor Descriptor: Cognitive Processes. Classification: Human Factors Engineering (4010). Population: Human (10). Methodology: Literature Review. References Available: Y. Page Count: 14. Issue Publication Date: Dec, 2007. AB - Objective: We provide a review and analysis of much of the published literature on binocular rivalry that is relevant to the design and use of head-worn displays (HWDs). Background: This review draws heavily from both the basic vision literature and applied HWD literature in order to help provide insight for minimizing the effects of binocular rivalry when HWDs are worn. Method: Included in this review are articles and books found cited in other works as well as articles and books obtained from an Internet search. Results: Issues discussed and summarized are (a) characteristics of binocular rivalry, (b) stimulus factors affecting rivalry, (c) cognitive variables affecting rivalry, and (d) tasks affected by rivalry. Conclusion: This paper offers a set of recommendations for minimizing the effects of binocular rivalry when HWDs are used as well as recommendations for future research. Application: Considerations of the basic vision literature on binocular rivalry will provide insight for future design solutions for HWDs. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - binocular rivalry KW - head-worn displays KW - cognitive variables KW - 2007 KW - Binocular Vision KW - Computer Peripheral Devices KW - Human Factors Engineering KW - Visual Displays KW - Cognitive Processes KW - 2007 U1 - Sponsor: US Air Force, US. Grant: FA8650-05-D-6502. Other Details: Link Simulation and Training (a division of L3 Communications Corp.). Recipients: No recipient indicated DO - 10.1518/001872007X249947 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-18141-011&site=ehost-live&scope=site UR - rpatter@mail.wsu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Farr, Everett G. AU - Bowen, Leland H. AU - Baum, Carl E. AU - Feather, William D. T1 - The Folded Horn Antenna. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2007/11/02/Nov2007 Part 2 of 2 Y1 - 2007/11/02/Nov2007 Part 2 of 2 VL - 55 IS - 11 M3 - Article SP - 3341 EP - 3344 SN - 0018926X AB - Antennas for radiating high-power mosoband (medium-band-width) electromagnetic signals are critical to the mission of upsetting electronics at a distance. When operated at frequencies of a few hundred megahertz, RF weapons require highly efficient antennas that can fit into a small volume. Most of the existing antennas, such as pyramidal horns, are too large to fit onto certain platforms of interest. To address this challenge, we investigate the folded horn, which has aperture dimensions of 0.5 × 2 wavelengths, and a depth of 1.5-2 wavelengths. This antenna has a nearly focused aperture field, doe to a parabolic fold In the H-plane. We report here on the fabrication and testing of the first folded horn, operating at 3 GHz. After a number of iterations, we obtained a realized gain of at least 10 dBi over 3-5 GHz, an aperture efficiency of 80%,and a return loss below -10 dB over 2.8-3,35 GHz, This design could be adapted to high voltages, nod It could work well In a 2-antenna array, with two antennas positioned back-to-back, driven by a differential source. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNAS (Electronics) KW - ELECTRONIC apparatus & appliances KW - ELECTROMAGNETIC devices KW - SIGNALS & signaling KW - BANDWIDTHS KW - BROADBAND communication systems KW - DATA transmission systems KW - WAVELENGTHS KW - HIGH voltages N1 - Accession Number: 27658016; Source Information: Nov2007 Part 2 of 2, Vol. 55 Issue 11, p3341; Subject Term: ANTENNAS (Electronics); Subject Term: ELECTRONIC apparatus & appliances; Subject Term: ELECTROMAGNETIC devices; Subject Term: SIGNALS & signaling; Subject Term: BANDWIDTHS; Subject Term: BROADBAND communication systems; Subject Term: DATA transmission systems; Subject Term: WAVELENGTHS; Subject Term: HIGH voltages; Subject Term: ; Number of Pages: 4p; ; Illustrations: 10 Graphs; ; Document Type: Article; L3 - 10.1109/TAP.2007.908854 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=27658016&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Weeks, Michael R. T1 - Organizing for disaster: Lessons from the military JO - Business Horizons JF - Business Horizons Y1 - 2007/11//Nov/Dec2007 VL - 50 IS - 6 M3 - Article SP - 479 EP - 489 SN - 00076813 AB - Abstract: Recent global events have highlighted the need for disaster planning by leaders in all types of organizations, civilian and military included. This article illustrates, from both academic and personal viewpoints, lessons learned during relief operations for the 2005 earthquake in Pakistan. Having participated in this effort, I detail guidance for designing resilient and robust organizational structures that can deal with the uncertainties of a disaster environment. For example, organizations frequently form temporary command centers to improve information flow in a crisis. Consequently, managers are advised to create temporary organizational structures with a common cognitive map to improve sense-making for employees during turbulent times. Other lessons presented include the establishment of a nuanced priority system for assessing potential courses of action, and the need to eliminate bureaucratic barriers to action to improve the speed of response when lives are at stake. This article concludes by pointing out that proper organizational structures need to be considered prior to disaster in order for organizations to be effective and efficient during the course of a mitigation effort. [Copyright &y& Elsevier] AB - Copyright of Business Horizons is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANIZATIONAL behavior KW - CORE competencies KW - ORGANIZATIONAL structure KW - INDUSTRIAL organization (Management) KW - Disaster management KW - Military KW - Organizational structure KW - Planning N1 - Accession Number: 26999592; Weeks, Michael R. 1; Email Address: mrw@weeks2000.com; Affiliations: 1: Department of Management, US Air Force Academy, 2354 Fairchild Drive, Suite 6J-102, USAFA, CO 80840, USA; Issue Info: Nov/Dec2007, Vol. 50 Issue 6, p479; Thesaurus Term: ORGANIZATIONAL behavior; Thesaurus Term: CORE competencies; Thesaurus Term: ORGANIZATIONAL structure; Thesaurus Term: INDUSTRIAL organization (Management); Author-Supplied Keyword: Disaster management; Author-Supplied Keyword: Military; Author-Supplied Keyword: Organizational structure; Author-Supplied Keyword: Planning; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.bushor.2007.07.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=26999592&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Perlovsky, Leonid I. AU - Deming, Ross W. T1 - Neural Networks for Improved Tracking. JO - IEEE Transactions on Neural Networks JF - IEEE Transactions on Neural Networks J1 - IEEE Transactions on Neural Networks PY - 2007/11// Y1 - 2007/11// VL - 18 IS - 6 M3 - Article SP - 1854 EP - 1857 SN - 10459227 AB - In this letter, we have developed a neural network (NN) based upon modeling fields for improved object tracking. Models for ground moving target indicator (GMTI) tracks have been developed as well as neural architecture incorporating these models. The neural tracker overcomes combinatorial complexity of tracking in highly cluttered scenarios and results in about 20-dB (two orders of magnitude) improvement in signal-to-clutter ratio. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Neural Networks is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TECHNOLOGICAL complexity KW - RADAR KW - ARTIFICIAL satellite tracking KW - NEURAL networks (Computer science) KW - ARTIFICIAL intelligence KW - COMPUTER architecture N1 - Accession Number: 27892031; Source Information: Nov2007, Vol. 18 Issue 6, p1854; Subject Term: TECHNOLOGICAL complexity; Subject Term: RADAR; Subject Term: ARTIFICIAL satellite tracking; Subject Term: NEURAL networks (Computer science); Subject Term: ARTIFICIAL intelligence; Subject Term: COMPUTER architecture; Subject Term: ; Number of Pages: 4p; ; Illustrations: 2 Diagrams; ; Document Type: Article; L3 - 10.1109/TNN.2007.903143 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=27892031&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Moad, II, James A. T1 - Re-imagining the Past through Letters. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2007/11// Y1 - 2007/11// VL - 19 IS - 1/2 M3 - Article SP - 325 EP - 336 PB - US Air Force Academy English Department SN - 10466967 AB - The article discusses the author's experiences in writing wartime literature and its significance in helping individuals use their imaginations and express themselves. The distinctions between the idealized literary depiction of war and its harsh realities are highlighted and the educational value of soldiers' writings are stressed. KW - SOLDIERS' writings KW - LITERATURE -- Study & teaching KW - WAR in literature KW - SELF-expression KW - WAR & society N1 - Accession Number: 28106532; Source Information: 2007, Vol. 19 Issue 1/2, p325; Subject Term: SOLDIERS' writings; Subject Term: LITERATURE -- Study & teaching; Subject Term: WAR in literature; Subject Term: SELF-expression; Subject Term: WAR & society; Subject Term: ; Number of Pages: 12p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=28106532&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Coletta, Damon T1 - Courage in the Service of Virtue: The Case of General Shinseki's Testimony before the Iraq War. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 2007/10// VL - 34 IS - 1 M3 - Article SP - 109 EP - 121 SN - 0095327X AB - Army Chief of Staff Eric Shinseki testified to the Senate Armed Services Committee before Operation Iraqi Freedom that several hundred thousand US Army soldiers were needed to occupy Iraq following a successful completion of the war. In hindsight, after many postwar problems occurred during army and marine efforts to stabilize Iraq, Shinseki's action has been almost universally praised as prescient and courageous. This article counters that, from a civil-military relations perspective, Shinseki's testimony was neither sufficiently accurate nor sufficiently respectful of civilian control to serve as a healthy model for future officers. The US civil-military relationship framed by the 1986 Goldwater-Nichols Act, which preserved the power of individual service chiefs to provide independent testimony, is better served when high-ranking officers adopt a notion of courage in light of military authority delegated to regional combatant commands and in consideration of the political vulnerabilities of their civilian masters. [ABSTRACT FROM AUTHOR] AB - Copyright of Armed Forces & Society (0095327X) is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UNITED States -- Armed Forces KW - CIVIL supremacy over the military KW - IRAQ War, 2003-2011 -- Government policy KW - MILITARY planning KW - CIVIL-military relations KW - COMMAND of troops KW - WITNESSES KW - IRAQ War, 2003-2011 KW - UNITED States KW - IRAQ KW - civilian control KW - Goldwater-Nichols KW - Iraq Crisis KW - Joint Chiefs of Staff KW - Senate Armed Services Committee KW - Shinseki, Eric KW - SHINSEKI, Eric K., 1942- N1 - Accession Number: 26986696; Coletta, Damon 1; Email Address: damon.coletta@usafa.af.mil; Affiliations: 1 : Professor of Political Science, United States Air Force Academy (Colorado Springs, Colorado).; Source Info: Oct2007, Vol. 34 Issue 1, p109; Note: Copyright© 2007 Sage Publications. All rights reserved. Reprinted by permission.; Historical Period: 2002 to 2006; Subject Term: UNITED States -- Armed Forces; Subject Term: CIVIL supremacy over the military; Subject Term: IRAQ War, 2003-2011 -- Government policy; Subject Term: MILITARY planning; Subject Term: CIVIL-military relations; Subject Term: COMMAND of troops; Subject Term: WITNESSES; Subject Term: IRAQ War, 2003-2011; Subject: UNITED States; Subject: IRAQ; Author-Supplied Keyword: civilian control; Author-Supplied Keyword: Goldwater-Nichols; Author-Supplied Keyword: Iraq Crisis; Author-Supplied Keyword: Joint Chiefs of Staff; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ahl&AN=26986696&site=ehost-live&scope=site DP - EBSCOhost DB - ahl ER - TY - JOUR AU - Vernin, Jean AU - Trinquet, Hervé AU - Jumper, George AU - Murphy, Edmund AU - Ratkowski, Anthony T1 - OHP02 gravity wave campaign in relation to optical turbulence. JO - Environmental Fluid Mechanics JF - Environmental Fluid Mechanics Y1 - 2007/10// VL - 7 IS - 5 M3 - Article SP - 371 EP - 382 PB - Springer Science & Business Media B.V. SN - 15677419 AB - Herein we present a campaign dedicated to the detection and the characterization of Gravity Waves (GW) in the Earth’s atmosphere in relation to the generation of Optical Turbulence (OT). The observations took place in France from 17 to 24 July 2002 at the Haute Provence Observatory (OHP) and simultaneously at the Sirene Observatory, some 20 km apart. From both sites, several balloons were launched that measured the classical PTU-Wind profiles and additionally the structure constant of the temperature field $$C_T^2$$ vertical profiles. A Generalized Scidar (GS) technique was implemented at the 1.93 m-diameter OHP telescope, providing $$C_N^2(h)$$ profiles every minute. From our observations, a significant amount of GW activity was observed at both sites, but without clear evidence of correlation between the two sites. It seems from our observations that a wide spectrum of GW is present at a given altitude and that this could result in a lack of correlation between observations made from two sites 20 km apart. Most GW are non-stationary with long horizontal wavelengths (λ ∼ 100–200 km), kilometric vertical wavelengths (λ ~ 0.5–2 km) and long intrinsic period ( T ~ 2–15 h). They belong in the category of “hydrostatic rotating or non-rotating waves”. Layers of optical turbulence detected by balloons and the Scidar technique correlate well with regions of GW activity. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Fluid Mechanics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Hydrodynamics KW - Meteorological optics KW - Atmospheric turbulence KW - Atmospheric circulation KW - Geophysics KW - Gravity waves KW - Gravity KW - Atmospheric physics KW - Turbulence KW - Atmospheric optics KW - Atmospheric turbulence effects N1 - Accession Number: 27004113; Vernin, Jean 1; Email Address: vernin@unice.fr; Trinquet, Hervé 1; Jumper, George 2; Murphy, Edmund 2; Ratkowski, Anthony 2; Affiliations: 1: LUAN, UMR 6525 , Université de Nice , Parc Valrose 06108 Nice Cedex 2 France; 2: US Air Force Research Laboratory (AFRL) , 29 Randolph Road Hanscom AFB 01731-3010 USA; Issue Info: Oct2007, Vol. 7 Issue 5, p371; Thesaurus Term: Hydrodynamics; Thesaurus Term: Meteorological optics; Thesaurus Term: Atmospheric turbulence; Thesaurus Term: Atmospheric circulation; Thesaurus Term: Geophysics; Subject Term: Gravity waves; Subject Term: Gravity; Subject Term: Atmospheric physics; Subject Term: Turbulence; Author-Supplied Keyword: Atmospheric optics; Author-Supplied Keyword: Atmospheric turbulence effects; Number of Pages: 12p; Illustrations: 1 Diagram, 1 Chart, 8 Graphs, 1 Map; Document Type: Article L3 - 10.1007/s10652-007-9032-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=27004113&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR T1 - What Older Adults Can Teach Us About Designing Better Ballots. AU - Jastrzembski, Tiffany S. AU - Charness, Neil JO - Ergonomics in Design JF - Ergonomics in Design Y1 - 2007///Fall2007 VL - 15 IS - 4 SP - 6 EP - 11 SN - 10648046 N1 - Accession Number: 32922492; Author: Jastrzembski, Tiffany S.: 1 email: tiffany.jastrzembski@mesa.afmc.af.mil. Author: Charness, Neil: 2 ; Author Affiliation: 1 Cognitive Research Psychologist, Air Force Research Laboratory, Mesa, AZ: 2 Professor of Psychology and Associate, Pepper Institute on Aging and Public Policy, Florida State University; No. of Pages: 6; Language: English; Publication Type: Article; Update Code: 20080704 N2 - The article offers gerontological considerations in designing ballots and voting machines that seek to improve the integrity of the electoral process. It is suggested that ergonomics practitioners should evaluate the accuracy and efficiency of voting systems such as direct recording equipment (DRE). It is believed that performance testing can reveal potential problems related to aging, human-computer interaction and usability. Findings of experimental studies combining touchscreens with varied presentations of the ballot and the office are reported. KW - *GERIATRICS KW - GERONTOLOGY KW - VOTING KW - ELECTIONS KW - MACHINERY KW - aging KW - design KW - human factors KW - technology KW - usability UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=32922492&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Jessen, Gregg H. AU - Fitch Jr., Robert C. AU - Gillespie, James K. AU - Via, Glen AU - Crespo, Antonio AU - Langley, Derrick AU - Denninghoff, Daniel J. AU - Trejo Jr., Manuel AU - Heller, Eric R. T1 - Short-Channel Effect Limitations on High-Frequency Operation of A1GaN/GaN HEMTs for T-Gate Devices. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices J1 - IEEE Transactions on Electron Devices PY - 2007/10// Y1 - 2007/10// VL - 54 IS - 10 M3 - Article SP - 2589 EP - 2597 SN - 00189383 AB - AIGaN/GaN high-electron mobility transistors (HEMTs) were fabricated on SiC substrates with epitaxial layers grown by multiple suppliers and methods. Devices with gate lengths varying from 0.50 to 0.09 μm were fabricated on each sample. We demonstrate the impact of varying the gate lengths and show that the unity current gain frequency response (fT) is limited by short-channel effects for all samples measured. We present an empirically based physical model that can predict the expected extrinsic fT for many combinations of gate length and commonly used barrier layer thickness (tbar) on silicon nitride passivated T-gated AIGaN/GaN HEMTs. The result is that even typical high-aspect-ratio (gate length to barrier thickness) devices show device performance limitations due to short-channel effects. We present the design tradeoffs and show the parameter space required to achieve optimal frequency performance for GaN technology. These design rules differ from the traditional GaAs technology by requiring a significantly higher aspect ratio to mitigate the short-channel effects. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MODULATION-doped field-effect transistors KW - FREQUENCIES of oscillating systems KW - EPITAXY KW - FREQUENCY response (Electrical engineering) KW - SILICON nitride KW - METALLURGICAL analysis KW - METAL organic chemical vapor deposition KW - MOLECULAR beam epitaxy KW - SEMICONDUCTOR wafers N1 - Accession Number: 26953909; Source Information: Oct2007, Vol. 54 Issue 10, p2589; Subject Term: MODULATION-doped field-effect transistors; Subject Term: FREQUENCIES of oscillating systems; Subject Term: EPITAXY; Subject Term: FREQUENCY response (Electrical engineering); Subject Term: SILICON nitride; Subject Term: METALLURGICAL analysis; Subject Term: METAL organic chemical vapor deposition; Subject Term: MOLECULAR beam epitaxy; Subject Term: SEMICONDUCTOR wafers; Subject Term: ; Number of Pages: 9p; ; Illustrations: 8 Black and White Photographs, 2 Charts, 9 Graphs; ; Document Type: Article; L3 - 10.1109/TED.2007.904476 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=26953909&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ruan, Y. AU - Hong, L. AU - Wicker, D. T1 - Analytic performance prediction of feature-aided global nearest neighbour algorithm in dense target scenarios. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2007/10// VL - 1 IS - 5 M3 - Article SP - 369 EP - 376 SN - 17518784 AB - An analytic performance prediction method for the feature-aided global nearest neighbour tracking algorithm in multi-target tracking (MTT) scenarios is proposed. The approach serves as an alternative to the costly Monte Carlo simulation method. In MTT, evaluation of interference among multiple targets remains a crucial issue on tracking performance study. This issue is investigated in dense target scenarios with feature information and unrestrictive motion. Analytic expressions are developed for tracking performance in terms of the probability of correct association and estimation accuracy. Feature information of targets is incorporated in the formulation which provides us an insight on how the tracking performance is impacted by features. In the derivations, a series of simplification assumptions are made and the results are not intended to be used directly in practical tracking applications. The major contribution of the paper is to provide a theoretical exploration and a methodology for analytic performance prediction of MTT. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - MONTE Carlo method KW - SIMULATION methods & models KW - ESTIMATION theory KW - PROBABILITY theory KW - AUTOMATIC tracking N1 - Accession Number: 26231696; Ruan, Y. 1; Hong, L. 1; Email Address: lang.hong@wright.edu; Wicker, D. 2; Affiliations: 1: Electrical Engineering Department, Wright State University, Dayton, OH 45435, USA; 2: Air Force Research Laboratory, SNAT WPAFB, OH 45433, USA; Issue Info: Oct2007, Vol. 1 Issue 5, p369; Thesaurus Term: ALGORITHMS; Thesaurus Term: MONTE Carlo method; Thesaurus Term: SIMULATION methods & models; Thesaurus Term: ESTIMATION theory; Thesaurus Term: PROBABILITY theory; Subject Term: AUTOMATIC tracking; Number of Pages: 8p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1049/iet-rsn:20050110 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=26231696&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 105913293 T1 - Air Force commanders' disciplinary decisions on spouse abuse cases. AU - Sayegh L AU - Harrison DF Y1 - 2007/10// N1 - Accession Number: 105913293. Language: English. Entry Date: 20080516. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Peer Reviewed; USA. Special Interest: Military/Uniformed Services; Psychiatry/Psychology. NLM UID: 9802540. KW - Intimate Partner Violence -- Legislation and Jurisprudence KW - Military Personnel KW - Administrative Personnel KW - Adult KW - Conceptual Framework KW - Cross Sectional Studies KW - Decision Making KW - Family Services KW - Female KW - Male KW - Role Theory KW - Summated Rating Scaling KW - Surveys KW - United States Air Force KW - Human SP - 75 EP - 91 JO - Journal of Aggression, Maltreatment & Trauma JF - Journal of Aggression, Maltreatment & Trauma JA - J AGGRESSION MALTREAT TRAUMA VL - 15 IS - 1 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - Inconsistencies exist among Air Force commanders when disciplining spouse abuse offenders, possibly owing to inadequate training, unclear role expectations, conflicting policy statements, or personal biases. This situation may lead to inappropriate decisions, further endangering victims and negatively impacting mission readiness. A sample of 624 Air Force squadron commanders was surveyed to measure how their perceived role and operations tempo affect their disciplinary decisions on two abuse scenarios. The study tested role and decision-theory concepts. Statistical results supported role theory in the predicted direction, and decision theory, but in the opposite direction hypothesized. Implications for theory, practice, and policy development for the military are discussed. SN - 1092-6771 AD - Assistant Professor in the Department of Behavioral Sciences and Leadership at United States Air Force Academy; lisa.sayegh@usafa.af.mil UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105913293&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - EFFECTS OF INCREASED LEG RESISTANCE TRAINING AND REDUCED AEROBIC TRAINING ON SELECTED PHYSIOLOGICAL PARAMETERS IN UNITED STATES AIR FORCE MEN AND WOMEN. AU - O'Hara, R. B. AU - Khan, Munna AU - Schlub, J. F. AU - Pohlman, R. L. AU - Laubach, L. L. AU - Eveland, E. JO - Journal of Exercise Physiology Online JF - Journal of Exercise Physiology Online Y1 - 2007/10// VL - 10 IS - 5 SP - 16 EP - 34 SN - 10979751 N1 - Accession Number: 28057198; Author: O'Hara, R. B.: 1 email: reggie.ohara@wpafb.af.mil. Author: Khan, Munna: 2 Author: Schlub, J. F.: 3 Author: Pohlman, R. L.: 4 Author: Laubach, L. L.: 5 Author: Eveland, E.: 1 ; Author Affiliation: 1 Air Force Research Laboratory, Human Effectiveness Branch, Wright Patterson A.F.B, USA: 2 JMI Central University, Electrical Engineering Department, New Delhi, INDIA: 3 88 Aerospace Medicine, Health & Wellness Centre, Wright Patterson A.F.B, USA: 4 Wright State University, Department of Biological Sciences, Dayton, OH, USA: 5 University of Dayton, Dayton, OH, USA; No. of Pages: 19; Language: English; Publication Type: Article; Update Code: 20080102 N2 - O'Hara, R.B., M. Khan, R.L, Pohlman, J.F. Schlub, L.L Laubach, E. Eveland . Effects Of Increased Leg Resistance Training And Reduced Aerobic Training On Selected Physiological Parameters In United States Air Force Men And Women. JEPonline 2007:10(5): 16-34.The aim of this 10-week training study was to determine the effects of high volume leg resistance training compared to high volume aerobic training on predicted and maximal aerobic capacity administered on the treadmill and cycle ergometer. 12 trained (M = 6) and (F = 6) Air Force subjects (26 to 36 yrs) volunteered and were assigned to one of two groups: non-traditional (NT, n = 6) or traditional (T, n = 6). No significant changes occurred in the NT or T group's predicted VO2 max (ml/kg/min) when measured on the cycle ergometer. Predicted aerobic capacity on the treadmill increased 17% for the NT group, but T group's VO2 max remained unchanged. VO2 max when measured on the treadmill improved 14 and 16% for the T and NT groups, respectively. An increased volume of heavy leg-resistance training induced mean percent increases in the NT groups maximal VO2 when measured on the treadmill and cycle ergometer. ABSTRACT FROM AUTHOR KW - *LEG exercises KW - *AEROBIC exercises KW - *TREADMILL exercise tests KW - *DYNAMOMETER KW - UNITED States. Air Force -- Training of KW - UNITED States KW - Aerobic Training KW - Leg Resistance Training KW - VO2 Max UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=28057198&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Kundu, Tribikram AU - Das, Samik AU - Jata, Kumar V. T1 - Point of impact prediction in isotropic and anisotropic plates from the acoustic emission data. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2007/10// VL - 122 IS - 4 M3 - Article SP - 2057 EP - 2066 SN - 00014966 AB - It is shown in this paper that the conventional triangulation technique is not very reliable for locating the impact point even in isotropic plates when the sensors are placed close to the point of strike for two reasons: First, it is difficult to pinpoint the exact time of arrival of the signal and, second, the Lamb modes in a plate are dispersive. Dispersive signals attenuate differently at various frequencies and propagate with different speeds causing distortions in the received signals, and thus introduce error in the time of flight measurement. The triangulation technique assumes that wave speeds in all directions are the same, which is not true for anisotropic plates. Here an alternative approach based on an optimization scheme is proposed to locate the point of impact in isotropic and anisotropic plates. A formulation is presented for the general anisotropic case. Experiments are carried out with an aluminum plate by dropping balls on the plate and picking up acoustic signals at different locations. The impact points predicted by the conventional triangulation technique and the proposed modified method are compared for this isotropic plate. Then it is investigated how the prediction would change if the plate is assumed to have some anisotropy. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOUND KW - DETECTORS KW - TRIANGULATION KW - SOUND waves KW - VIBRATION (Mechanics) KW - ANISOTROPY N1 - Accession Number: 26773893; Kundu, Tribikram 1; Email Address: tkundu@email.arizona.edu; Das, Samik 1; Email Address: samik@email.arizona.edu; Jata, Kumar V. 2; Email Address: kumar.jata@wpafb.af.mil; Affiliations: 1 : Department of Civil Engineering and Engineering Mechanics, University of Arizona, Tucson, Arizona 85721; 2 : Air Force Research Laboratory, MLLP, NDE Branch, Wright Patterson Air Force Base, Ohio 45433; Source Info: Oct2007, Vol. 122 Issue 4, p2057; Subject Term: SOUND; Subject Term: DETECTORS; Subject Term: TRIANGULATION; Subject Term: SOUND waves; Subject Term: VIBRATION (Mechanics); Subject Term: ANISOTROPY; Number of Pages: 10p; Illustrations: 3 Color Photographs, 2 Diagrams, 11 Graphs; Document Type: Article L3 - 10.1121/1.2775322 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=26773893&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR ID - 2007-14584-012 AN - 2007-14584-012 AU - Winterbottom, Marc D. AU - Patterson, Robert AU - Pierce, Byron J. AU - Covas, Christine M. AU - Winner, Jennifer T1 - Depth of focus and visual recognition of imagery presented on simultaneously viewed displays: Implications for head-mounted displays. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2007/10// VL - 49 IS - 5 SP - 907 EP - 919 CY - US PB - Human Factors & Ergonomics Society SN - 0018-7208 SN - 1547-8181 AD - Patterson, Robert, Department of Psychology, Washington State University, Pullman, WA, US, 99164-4820 N1 - Accession Number: 2007-14584-012. PMID: 17915606 Partial author list: First Author & Affiliation: Winterbottom, Marc D.; Visual Systems Research Laboratory, U.S. Air Force Research Laboratory, Mesa, AZ, US. Other Publishers: Sage Publications. Release Date: 20071119. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Imagery; Simulation; Visual Displays. Minor Descriptor: Luminance; Observers. Classification: Engineering & Environmental Psychology (4000). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 13. Issue Publication Date: Oct, 2007. AB - Objective: We sought to determine the optimal focal distance for a semitransparent monocular head-mounted display (HMD) integrated with a flight simulator display and to investigate whether observers experienced visual discomfort or impaired target recognition when using an HMD set at the optimal distance. Background: When an observer wears a monocular HMD and views a simulator display, focal distances of both displays must be within the observers' depth of focus to prevent blurred imagery. Because focal distance can vary by as much as 0.5 m in U.S. Air Force multifaceted simulator displays, we determined whether a monocular HMD could be integrated with a simulator display without blurred imagery or discomfort. Method: Depth of focus and visual recognition were measured with a staircase procedure, and visual discomfort was measured with a questionnaire. Results: Depth of focus was 0.64 diopters in one condition tested, but it was affected by luminance level and display resolution. It was recommended that HMD focal distance equal the optical midpoint of the range of viewing distances encountered in the simulator. Moreover, wearing an HMD produced a decline in recognition performance for targets presented on the simulator display despite both displays being within observers' depth of focus and producing no visual discomfort. Conclusion: Monocular HMDs can be integrated with multifaceted simulator displays without blurred imagery or visual discomfort, provided that the correct focal distance is adopted. Application: For situations involving simultaneously viewed visual displays. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - visual recognition KW - imagery KW - head-mounted displays KW - semitransparent monocular KW - target recognition KW - 2007 KW - Imagery KW - Simulation KW - Visual Displays KW - Luminance KW - Observers KW - 2007 U1 - Sponsor: US Air Force, US. Grant: F41624-97-C-5000. Other Details: Link Simulation and Training (a division of L-3 Communications). Recipients: No recipient indicated DO - 10.1518/001872007X230253 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-14584-012&site=ehost-live&scope=site UR - rpatter@mail.wsu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Zhdanov, B.V. AU - Knize, R. J. T1 - Hydrocarbon-free potassium laser. JO - Electronics Letters JF - Electronics Letters Y1 - 2007/09/13/ VL - 43 IS - 19 M3 - Article SP - 1024 EP - 1025 SN - 00135194 AB - A hydrocarbon-free alkali laser operating on a mixture of potassium vapour and helium buffer gas has been demonstrated. Hydrocarbon-free alkali lasers can operate at higher temperatures without risk of cell contamination caused by chemical reactions between the alkali atoms and the hydrocarbon buffer gas. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROCARBONS KW - POTASSIUM vapor KW - LASERS KW - HELIUM KW - TEMPERATURE KW - CHEMICAL reactions KW - NONLINEAR optics N1 - Accession Number: 26554998; Zhdanov, B.V. 1; Email Address: boris.zhdanov@usafa.edu; Knize, R. J. 1; Affiliations: 1: US Air Force Academy, Department of Physics, USA; Issue Info: 9/13/2007, Vol. 43 Issue 19, p1024; Subject Term: HYDROCARBONS; Subject Term: POTASSIUM vapor; Subject Term: LASERS; Subject Term: HELIUM; Subject Term: TEMPERATURE; Subject Term: CHEMICAL reactions; Subject Term: NONLINEAR optics; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; Number of Pages: 2p; Illustrations: 1 Black and White Photograph, 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1049/el:20071587 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=26554998&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR T1 - Risk Factors Associated with Exercise Associated Collapse (EAC) in Marathon Runners. (Abstract) AU - Asplund, Chad AU - Switaj, Timothy L. AU - Howe, Allyson AU - Bunt, Christopher W. JO - Clinical Journal of Sport Medicine JF - Clinical Journal of Sport Medicine Y1 - 2007/09// VL - 17 IS - 5 SP - 421 EP - 422 CY - ; SN - 1050642X N1 - Accession Number: SPHS-1065247; Author: Asplund, Chad: 1 Author: Switaj, Timothy L.: 2 Author: Howe, Allyson: 3 Author: Bunt, Christopher W. ; Author Affiliation: 1 United States Air Force, Malcolm Grow Medical Center, Andrews Air Force Base, MD, USA; Eisenhower Army Medical Center, Fort Gordon, GA, USA; NCC-Dewitt Army Community Hospital, Fort Belvoir, VA, USA: 2 United States Air Force, Malcolm Grow Medical Center, Andrews Air Force Base, MD, USA; Eisenhower Army Medical Center, Fort Gordon, GA, USA; NCC-Dewitt Army Community Hospital, Fort Belvoir, VA, USA: 3 United States Air Force, Malcolm Grow Medical Center, Andrews Air Force Base, MD, USA; Eisenhower Army Medical Center, Fort Gordon, GA, USA; NCC-Dewitt Army Community Hospital, Fort Belvoir, VA, USA; Conference: American Medical Society for Sports Medicine (16th : 2007 : Albuquerque, New Mexico).; No. of Pages: 2; Language: English; Parent Item: SPHP5857; Publication Type: Article; Material Type: PRINT; Update Code: 20071201; SIRC Article No.: S-1065247 N2 - To determine what factors influence exercise-associated collapse (EAC), marathon runners were interviewed. Results show a higher incidence of EAC among previous sufferers, women, slower finishers, those who had suffered heat illness, and those who experienced vomiting during the race. KW - *SYNCOPE (Pathology) KW - *MARATHONS (Sports) KW - *MARATHON running KW - RISK KW - CASE STUDIES KW - LONG DISTANCE RUNNING KW - RETROSPECTIVE STUDY L2 - http://articles.sirc.ca/search.cfm?id=S-1065247 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=SPHS-1065247&site=ehost-live&scope=site UR - http://articles.sirc.ca/search.cfm?id=S-1065247 DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Gustatson, Steven C. AU - Parker, David R. AU - Martin, Richard K. T1 - Cardinal Interpolation. JO - IEEE Transactions on Pattern Analysis & Machine Intelligence JF - IEEE Transactions on Pattern Analysis & Machine Intelligence J1 - IEEE Transactions on Pattern Analysis & Machine Intelligence PY - 2007/09// Y1 - 2007/09// VL - 29 IS - 9 M3 - Article SP - 1538 EP - 1545 SN - 01628828 AB - A Bayesian probability density for an interpolating function is developed, and its desirable properties and practical potential are demonstrated. This density has an often needed but previously unachieved property, here called cardinal interpolation, which ensures extrapolation to the density of the least-squares linear model. In particular, the mean of the cardinal interpolation density is a smooth function that intersects given (x, y) points and which extrapolates to their least-squares line, and the variance of this density is a smooth function that is zero at the point x values, that increases with distance from the nearest point x value, and that extrapolates to the well-known quadratic variance function for the least-squares line. The new cardinal interpolation density is developed for Gaussian radial basis interpolators using fully Bayesian methods that optimize interpolator smoothness. This optimization determines the basis function widths and yields an interpolating density that is non-Gaussian except for large magnitude x and which is therefore not the outcome of a Gaussian process. Further, new development shows that the salient property of extrapolation to the density of the least-squares linear model can be achieved for more general approximating (not just interpolating) functions. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Pattern Analysis & Machine Intelligence is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BAYESIAN analysis KW - STATISTICAL decision making KW - PROBABILITY theory KW - GAUSSIAN processes KW - REGRESSION analysis KW - MULTIVARIATE analysis KW - IMAGE reconstruction KW - IMAGE stabilization KW - IMAGE compression N1 - Accession Number: 26287401; Source Information: Sep2007, Vol. 29 Issue 9, p1538; Subject Term: BAYESIAN analysis; Subject Term: STATISTICAL decision making; Subject Term: PROBABILITY theory; Subject Term: GAUSSIAN processes; Subject Term: REGRESSION analysis; Subject Term: MULTIVARIATE analysis; Subject Term: IMAGE reconstruction; Subject Term: IMAGE stabilization; Subject Term: IMAGE compression; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.1109/TPAMI.2007.1170 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=26287401&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Coletta, Damon T1 - Unipolarity, Globalization, and the War on Terror: Why Security Studies Should Refocus on Comparative Defense. JO - International Studies Review JF - International Studies Review Y1 - 2007/09// VL - 9 IS - 3 M3 - Article SP - 385 EP - 406 SN - 15219488 AB - Changes in the international environment such as the shift toward unipolarity, the rise of globalization, and the expansion of terrorist networks have redefined the sorts of problems confronted by policymakers and military practitioners in the arena of national security. With most of its fundamental concepts and frameworks rooted in the study of international relations (IR), the field of security studies has failed to keep up. Highly educated soldiers and diplomats sent to help rebuild failed or fragmented states are still poorly equipped to identify major obstacles or formulate solutions for accomplishing their missions. The safety of states and societies today depends less exclusively on blocking the military, economic, and ideological initiatives of a foreign power and more on supporting the integrity of members that can participate in an international system regulated by generally agreed-upon rules and conventions. The need to help various types of states under a variety of cultural and economic conditions build legitimate, durable political institutions and functioning societies should push security studies toward a broader examination of comparative politics. Beyond the balance of power and modalities of interstate competition, the new security studies should embrace fundamentals found outside of IR to make more robust intellectual contributions to the examination of comparative defense. [ABSTRACT FROM AUTHOR] AB - Copyright of International Studies Review is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERNATIONAL relations KW - GLOBALIZATION KW - NATIONAL security KW - MILITARY readiness KW - INTERNATIONAL mediation KW - MILITARY policy N1 - Accession Number: 27550529; Coletta, Damon 1; Affiliations: 1: *Department of Political Science, United States Air Force Academy; Issue Info: Sep2007, Vol. 9 Issue 3, p385; Thesaurus Term: INTERNATIONAL relations; Thesaurus Term: GLOBALIZATION; Subject Term: NATIONAL security; Subject Term: MILITARY readiness; Subject Term: INTERNATIONAL mediation; Subject Term: MILITARY policy; NAICS/Industry Codes: 911410 Foreign affairs; NAICS/Industry Codes: 928120 International Affairs; NAICS/Industry Codes: 928110 National Security; Number of Pages: 22p; Document Type: Article L3 - 10.1111/j.1468-2486.2007.00696.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=27550529&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Gebbie, David A. AU - Reeder, Mark F. AU - Tyler, Charles AU - Fonov, Vladimir AU - Crafton, Jim T1 - Lift and Drag Characteristics of a Blended-Wing Body Aircraft. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2007/09//Sep/Oct2007 Y1 - 2007/09//Sep/Oct2007 VL - 44 IS - 5 M3 - Article SP - 1409 EP - 1409 SN - 00218669 AB - The aerodynamic characteristics of a blended-wing body aircraft were assessed in the Air Force Institute of Technology low-speed wind tunnel. The scaled-down model (Rec ~ 105 and M = 0.10 to 0.20) of a strike tanker consisted of a shaped fuselage and slender, sweptback wings. The model evaluation and analysis process included force and moment measurements acquired from a wind-tunnel balance along with complementary pressure sensitive paint measurements and computational fluid dynamics solutions for a few cases. The force and moment coefficient data suggested that the aircraft is affected by both vortex lift and potential flow lift mechanisms. This was manifested in an apparent stall mechanism with a significant dependence on airspeed. One of the most intriguing aspects of the results was the striking difference in the force and moment measurements before and after the paint was applied to the surface. Although the roughness for both models was below the threshold suggested by 2-D boundary layer theory for all data acquired, the application of the paint led to a clear and repeatable effect on the force coefficient data. The lift slope was steeper and the onset of stall, when it occurred, was sudden across the entire wing for sufficiently smooth models. By contrast, the lift slope was reduced and stall was indicated only through a mild change in lift slope for the measurements corresponding to the rougher surface. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MODEL airplanes KW - AIRPLANE wings KW - WIND tunnels KW - AERODYNAMICS KW - FLUID dynamics KW - MECHANICS (Physics) N1 - Accession Number: 27300735; Source Information: Sep/Oct2007, Vol. 44 Issue 5, p1409; Subject Term: MODEL airplanes; Subject Term: AIRPLANE wings; Subject Term: WIND tunnels; Subject Term: AERODYNAMICS; Subject Term: FLUID dynamics; Subject Term: MECHANICS (Physics); Subject Term: ; Number of Pages: 1p; ; Document Type: Article; L3 - 10.2514/1.22356 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=27300735&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Muszynski, Michael T1 - White Terror: Cossack Warlords of the Trans-Siberian. JO - Journal of Military Ethics JF - Journal of Military Ethics J1 - Journal of Military Ethics PY - 2007/09// Y1 - 2007/09// VL - 6 IS - 3 M3 - Book Review SP - 253 EP - 254 PB - Routledge SN - 15027570 AB - The article reviews the book "White Terror: Cossack Warlords of the Trans-Siberian," by Jamie Bisher. KW - WHITE Terror: Cossack Warlords of the Trans-Siberian (Book) KW - BISHER, Jamie KW - TERROR KW - NONFICTION N1 - Accession Number: 26946333; Source Information: Sep2007, Vol. 6 Issue 3, p253; Subject Term: WHITE Terror: Cossack Warlords of the Trans-Siberian (Book); Subject Term: BISHER, Jamie; Subject Term: TERROR; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; L3 - 10.1080/15027570701539693 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=26946333&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ficarrotta, J. Carl T1 - Double Effect Reasoning: Doing Good and Avoiding Evil. JO - Journal of Military Ethics JF - Journal of Military Ethics J1 - Journal of Military Ethics PY - 2007/09// Y1 - 2007/09// VL - 6 IS - 3 M3 - Book Review SP - 255 EP - 256 PB - Routledge SN - 15027570 AB - The article reviews the book "Double Effect Reasoning: Doing Good and Avoiding Evil," by Thomas A. Cavanaugh. KW - DOUBLE Effect Reasoning: Doing Good & Avoiding Evil (Book) KW - CAVANAUGH, Thomas A. KW - REASONING (Logic) KW - NONFICTION N1 - Accession Number: 26946332; Source Information: Sep2007, Vol. 6 Issue 3, p255; Subject Term: DOUBLE Effect Reasoning: Doing Good & Avoiding Evil (Book); Subject Term: CAVANAUGH, Thomas A.; Subject Term: REASONING (Logic); Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; L3 - 10.1080/15027570601183196 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=26946332&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Iyer, Nandini AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Effects of periodic masker interruption on the intelligibility of interrupted speech. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2007/09// VL - 122 IS - 3 M3 - Article SP - 1693 EP - 1701 SN - 00014966 AB - When listeners hear a target signal in the presence of competing sounds, they are quite good at extracting information at instances when the local signal-to-noise ratio of the target is most favorable. Previous research suggests that listeners can easily understand a periodically interrupted target when it is interleaved with noise. It is not clear if this ability extends to the case where an interrupted target is alternated with a speech masker rather than noise. This study examined speech intelligibility in the presence of noise or speech maskers, which were either continuous or interrupted at one of six rates between 4 and 128 Hz. Results indicated that with noise maskers, listeners performed significantly better with interrupted, rather than continuous maskers. With speech maskers, however, performance was better in continuous, rather than interrupted masker conditions. Presumably the listeners used continuity as a cue to distinguish the continuous masker from the interrupted target. Intelligibility in the interrupted masker condition was improved by introducing a pitch difference between the target and speech masker. These results highlight the role that target-masker differences in continuity and pitch play in the segregation of competing speech signals. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LISTENING KW - SIGNAL-to-noise ratio KW - HEARING KW - NOISE KW - SPEECH KW - INTONATION (Phonetics) N1 - Accession Number: 26977312; Iyer, Nandini 1; Email Address: nandini.iyer@wpafb.af.mil; Brungart, Douglas S. 1; Simpson, Brian D. 1; Affiliations: 1 : Air Force Research Laboratory, Wright-Patterson AFB, Ohio, USA; Source Info: Sep2007, Vol. 122 Issue 3, p1693; Subject Term: LISTENING; Subject Term: SIGNAL-to-noise ratio; Subject Term: HEARING; Subject Term: NOISE; Subject Term: SPEECH; Subject Term: INTONATION (Phonetics); Number of Pages: 9p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1121/1.2756177 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=26977312&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Effect of target-masker similarity on across-ear interference in a dichotic cocktail-party listening task. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2007/09// VL - 122 IS - 3 M3 - Article SP - 1724 EP - 1734 SN - 00014966 AB - Similarity between the target and masking voices is known to have a strong influence on performance in monaural and binaural selective attention tasks, but little is known about the role it might play in dichotic listening tasks with a target signal and one masking voice in the one ear and a second independent masking voice in the opposite ear. This experiment examined performance in a dichotic listening task with a target talker in one ear and same-talker, same-sex, or different-sex maskers in both the target and the unattended ears. The results indicate that listeners were most susceptible to across-ear interference with a different-sex within-ear masker and least susceptible with a same-talker within-ear masker, suggesting that the amount of across-ear interference cannot be predicted from the difficulty of selectively attending to the within-ear masking voice. The results also show that the amount of across-ear interference consistently increases when the across-ear masking voice is more similar to the target speech than the within-ear masking voice is, but that no corresponding decline in across-ear interference occurs when the across-ear voice is less similar to the target than the within-ear voice. These results are consistent with an “integrated strategy” model of speech perception where the listener chooses a segregation strategy based on the characteristics of the masker present in the target ear and the amount of across-ear interference is determined by the extent to which this strategy can also effectively be used to suppress the masker in the unattended ear. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VOICE KW - DICHOTIC listening tests KW - AUDIOMETRY KW - SPEECH perception KW - EAR KW - HEARING N1 - Accession Number: 26977309; Brungart, Douglas S. 1; Email Address: douglas.brungart@wpafb.af.mil; Simpson, Brian D. 1; Affiliations: 1 : Air Force Research Laboratory, WPAFB, Ohio 45433; Source Info: Sep2007, Vol. 122 Issue 3, p1724; Subject Term: VOICE; Subject Term: DICHOTIC listening tests; Subject Term: AUDIOMETRY; Subject Term: SPEECH perception; Subject Term: EAR; Subject Term: HEARING; Number of Pages: 11p; Illustrations: 1 Diagram, 4 Charts, 5 Graphs; Document Type: Article L3 - 10.1121/1.2756797 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=26977309&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR AU - Decker, Doug AU - Jacques, David R. AU - Pachter, Meir T1 - A Theory of Wide Area Search and Engagement. JO - Military Operations Research JF - Military Operations Research J1 - Military Operations Research PY - 2007/09// Y1 - 2007/09// VL - 12 IS - 3 M3 - Article SP - 37 EP - 57 SN - 10825983 AB - The article discusses a study on a theory of wide area search and engagement. This paper focuses on the classification and attack operations of Unmanned Combat Air Vehicles (UCAVs) looking in the effectivity of various systems for their degree of discrimination in detection and classification. A specific wide area search and attack model is presented. KW - COMBAT KW - VEHICLES KW - CLASSIFICATION KW - DISCRIMINATION KW - REMOTELY piloted vehicles N1 - Accession Number: 27428758; Source Information: 2007, Vol. 12 Issue 3, p37; Subject Term: COMBAT; Subject Term: VEHICLES; Subject Term: CLASSIFICATION; Subject Term: DISCRIMINATION; Subject Term: REMOTELY piloted vehicles; Subject Term: ; Number of Pages: 21p; ; Illustrations: 2 Charts, 10 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=27428758&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Mastroianni, George R. T1 - The Trials of Abu Ghraib: An Expert Witness Account of Shame and Honor. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College J1 - Parameters: U.S. Army War College PY - 2007///Fall2007 Y1 - 2007///Fall2007 VL - 37 IS - 3 M3 - Book Review SP - 131 EP - 133 SN - 00311723 AB - The article reviews the book " The Trials of Abu Ghraib: An Expert Witness Account of Shame and Honor," written by S. G. Mestrovic. KW - TRIALS of Abu Ghraib: An Expert Witness Account of Shame & Honor, The (Book) KW - MESTROVIC, S. G. KW - ABU Ghraib Prison KW - NONFICTION N1 - Accession Number: 27015144; Source Information: Fall2007, Vol. 37 Issue 3, p131; Subject Term: TRIALS of Abu Ghraib: An Expert Witness Account of Shame & Honor, The (Book); Subject Term: MESTROVIC, S. G.; Subject Term: ABU Ghraib Prison; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=27015144&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kolenc, Antony Barone T1 - "MR. SCALIA'S NEIGHBORHOOD": A HOME FOR MINORITY RELIGIONS? JO - St. John's Law Review JF - St. John's Law Review Y1 - 2007///Fall2007 VL - 81 IS - 4 M3 - Article SP - 819 EP - 880 PB - St. John's Law Review SN - 00362905 AB - The article features Justice Antonin Scalia, who was described as the most outspoken and convincing voice of the new conservative majority on the United States Supreme Court. Scalia's power of influence has increased, with some predicting that Scalia may well command a majority of the court in the future. Justice Scalia has been a vocal critic for over two decades in the Court's First Amendment Establishment Clause jurisprudence. There, Scalia has been arguing for the death of the Lemon test and a greater tolerance for religion in the public arena. KW - JUDGES -- United States KW - CONSERVATIVES KW - JURISPRUDENCE KW - UNITED States KW - UNITED States. Supreme Court KW - SCALIA, Antonin, 1936-2016 N1 - Accession Number: 27200131; Kolenc, Antony Barone 1,2; Affiliations: 1: University of Florida College of Law; 2: Attorney, United States Air Force Judge Advocate General's Corps; Issue Info: Fall2007, Vol. 81 Issue 4, p819; Subject Term: JUDGES -- United States; Subject Term: CONSERVATIVES; Subject Term: JURISPRUDENCE; Subject: UNITED States ; Company/Entity: UNITED States. Supreme Court; People: SCALIA, Antonin, 1936-2016; Number of Pages: 62p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=27200131&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Bostock, Deborah J. AU - Daley, James G. T1 - Lifetime and Current Sexual Assault and Harassment Victimization Rates of Active-Duty United States Air Force Women. JO - Violence Against Women JF - Violence Against Women Y1 - 2007/09// VL - 13 IS - 9 M3 - Article SP - 927 EP - 944 SN - 10778012 AB - From a stratified random sample, 2,018 active-duty United States Air Force women completed a telephone survey dealing with sexual assault and harassment. The lifetime prevalence of rape among Air Force women (28%) was more than twice as high as the prevalence in a national sample (13%). Nearly half of the military sample had been the victims of rape, molestation, or attempted sexual assault. The majority of both initial rapes (75%) and most recent rapes (56%) involved assault by civilians when the victims were civilians. Family members perpetrated 29% of initial rapes and 33% of most recent rapes. Regarding military status of the perpetrator, 14% of first-time victims were raped by a military member, 26.7% of multiple-time victims were raped by a military member, 31.8% of military women were sexually harassed by a military supervisor or boss, and 26.7% of military women were sexually harassed by a military coworker. [ABSTRACT FROM AUTHOR] AB - Copyright of Violence Against Women is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WOMEN & the military KW - WOMEN military personnel KW - RAPE KW - SEXUAL harassment KW - UNITED States. Air Force KW - MILITARY crimes KW - WOMEN -- Crimes against KW - UNITED States KW - military women KW - sexual assault KW - sexual harassment KW - U.S. Air Force N1 - Accession Number: 26362866; Bostock, Deborah J. 1; Daley, James G. 2; Source Information: Sep2007, Vol. 13 Issue 9, p927; Subject: WOMEN & the military; Subject: WOMEN military personnel; Subject: RAPE; Subject: SEXUAL harassment; Subject: UNITED States. Air Force; Subject: MILITARY crimes; Subject: WOMEN -- Crimes against; Geographic Terms: UNITED States; Author-Supplied Keyword: military women; Author-Supplied Keyword: sexual assault; Author-Supplied Keyword: sexual harassment; Author-Supplied Keyword: U.S. Air Force; Number of Pages: 18p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=26362866&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 105932855 T1 - Lifetime and current sexual assault and harassment victimization rates of active-duty United States Air Force women. AU - Bostock DJ AU - Daley JG Y1 - 2007/09// N1 - Accession Number: 105932855. Language: English. Entry Date: 20080118. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Peer Reviewed; USA. Special Interest: Military/Uniformed Services; Psychiatry/Psychology; Women's Health. NLM UID: 9506308. KW - Military Personnel -- United States KW - Sexual Abuse -- Epidemiology -- United States KW - Sexual Harassment -- Epidemiology -- United States KW - Adult KW - Chi Square Test KW - Cross Sectional Studies KW - Epidemiological Research KW - Female KW - Prevalence KW - Probability Sample KW - Rape KW - Stratified Random Sample KW - Surveys KW - Telephone KW - United States KW - United States Air Force KW - Victims KW - Human SP - 927 EP - 944 JO - Violence Against Women JF - Violence Against Women JA - VIOLENCE AGAINST WOMEN VL - 13 IS - 9 CY - Thousand Oaks, California PB - Sage Publications Inc. AB - From a stratified random sample, 2,018 active-duty United States Air Force women completed a telephone survey dealing with sexual assault and harassment. The lifetime prevalence of rape among Air Force women (28%) was more than twice as high as the prevalence in a national sample (13%). Nearly half of the military sample had been the victims of rape, molestation, or attempted sexual assault. The majority of both initial rapes (75%) and most recent rapes (56%) involved assault by civilians when the victims were civilians. Family members perpetrated 29% of initial rapes and 33% of most recent rapes. Regarding military status of the perpetrator, 14% of first-time victims were raped by a military member, 26% of multiple-time victims were raped by a military member, 31.8% of military women were sexually harassed by a military supervisor or boss, and 26.7% of military women were sexually harassed by a military coworker. SN - 1077-8012 AD - United States Air Force. U2 - PMID: 17704052. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105932855&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2007-13481-015 AN - 2007-13481-015 AU - Harville, Donald L. T1 - Review of Mastering virtual teams. JF - Personnel Psychology JO - Personnel Psychology JA - Pers Psychol Y1 - 2007///Aut 2007 VL - 60 IS - 3 SP - 790 EP - 793 CY - United Kingdom PB - Blackwell Publishing SN - 0031-5826 SN - 1744-6570 N1 - Accession Number: 2007-13481-015. Partial author list: First Author & Affiliation: Harville, Donald L.; Air Force Research Laboratory, Brooks City-Base, TX, US. Other Publishers: Wiley-Blackwell Publishing Ltd. Release Date: 20071015. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Review-Book. Language: English. Major Descriptor: Virtual Reality; Work Teams. Minor Descriptor: Group Dynamics; Management Personnel; Technology. Classification: Management & Management Training (3640); Communication Systems (2700). Population: Human (10). Reviewed Item: Duarte, Deborah L.; Snyder, Nancy Tennant. Mastering virtual teams=San Francisco: Jossey-Bass, 247 pages, $49.00; 2006. References Available: Y. Page Count: 4. Issue Publication Date: Aut 2007. AB - Reviews the book, Mastering virtual teams by Deborah L. Duarte and Nancy Tennant Snyder (2006). This book is oriented toward managers and team members, not toward researchers. However, the Notes and Further Readings sections can be used to locate relevant research articles. Both authors have impressive experience and training relevant to virtual teams. The book follows a logical progression from understanding virtual teams, to creating them, and finally to mastering them. A useful strategy for reading this book cover to cover would be to read the Near Virtual Disaster example at the end of most chapters prior to reading the chapter. In summary, I strongly recommend this book both for managers and for team members who currently use or plan to use virtual teams. It has very useful discussions of technological, cultural, and personality aspects of team success. Investing some time in reading and applying it can easily save significant amounts of time, reduce or even eliminate headaches, and improve the products/services produced by teams. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - virtual teams KW - technological aspects KW - managers KW - team members KW - cultural aspects KW - personality aspects KW - team success KW - 2007 KW - Virtual Reality KW - Work Teams KW - Group Dynamics KW - Management Personnel KW - Technology KW - 2007 U2 - Duarte, Deborah L.; Snyder, Nancy Tennant. (2006); Mastering virtual teams; San Francisco: Jossey-Bass, 247 pages, $49.00 DO - 10.1111/j.1744-6570.2007.00091_9.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-13481-015&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-12820-001 AN - 2007-12820-001 AU - Budd, Frank T1 - U.S. Air Force wingman culture: A springboard for organizational development. JF - Organization Development Journal JO - Organization Development Journal Y1 - 2007///Fal 2007 VL - 25 IS - 3 SP - P17 EP - P22 CY - US PB - Organization Development Institute SN - 0889-6402 AD - Budd, Frank N1 - Accession Number: 2007-12820-001. Partial author list: First Author & Affiliation: Budd, Frank; United States Air Force, Kirtland Air Force Base, NM, US. Release Date: 20080121. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Military Psychology; Organizational Climate; Organizational Development; Organizational Learning; Organizations. Minor Descriptor: Air Force Personnel; Teams. Classification: Organizational Behavior (3660); Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 6. Issue Publication Date: Fal 2007. AB - Wingman is the United States Air Force (USAF) term for one person looking out for another, anticipating difficulties and responding to maintain the welfare of their partner. This article describes the author's use of the wingman concept as a foundation for organizational development, teambuilding, and organizational learning. Specific cases are included to assist internal consultants to see the applications of organizational development principles within the USAF. Lessons learned included: assess the organization's vocabulary and cultural receptiveness to organizational development; break the organization into relevant product lines or sub-units and look for greater receptiveness in one of the smaller units; get on the 'scope' of the senior leader/CEO of your organization as soon as possible; and realize that for many leaders your 'product' is yourself, so good emotional intelligence and interpersonal skills are key to success. As with any cultural transformation initiative, the USAF must sustain its commitment to building a wingman culture - a culture of interpersonal connectedness and respect, emotional intelligence, and an embracing of the diversity that represents the current workforce. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - organizational learning KW - organizational development KW - cultural receptiveness KW - organizations KW - wingman KW - United States Air Force KW - team building KW - 2007 KW - Military Psychology KW - Organizational Climate KW - Organizational Development KW - Organizational Learning KW - Organizations KW - Air Force Personnel KW - Teams KW - 2007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-12820-001&site=ehost-live&scope=site UR - Frank.Budd@travis.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Nainaparampil, Josekutty J. AU - Eapen, Kalathil C. AU - Sanders, Jeffrey H. AU - Voevódin, Andrey A. T1 - Ionic-Liquid Lubrication of Sliding MEMS Contacts: Comparison of AFM Liquid Cell and Device-Level Tests. JO - Journal of Microelectromechanical Systems JF - Journal of Microelectromechanical Systems J1 - Journal of Microelectromechanical Systems PY - 2007/08// Y1 - 2007/08// VL - 16 IS - 4 M3 - Article SP - 836 EP - 843 SN - 10577157 AB - Lubrication of microelectromechanical systems (MEMS) became very critical as the devices became complex and its reliability began to deteriorate. In this paper, ionic liquids (ILs) with low volatility and high environmental stability were investigated as lubricants for sliding MEMS devices. A method that is based on atomic force microscopy (AFM) with a liquid cell was developed to study friction and wear properties of surfaces lubricated with ILs, having a systematic variation in molecular geometry and chemistry. Six-member pyridinium and five-member imidazolium rings are compared as cations in ethyl methyl pyridinium and ethyl methyl imidazolium ethyl sulfate; influence of short and long alkyl chain lengths on lubrication is studied with butyl methyl pyrrolidinium and hexyl methyl pyrrolidinium bis(trifluro methyl sulfonyl) imide. Formation of a surface-screening cation layer was discovered and linked to low friction and wear of IL-lubricated hydrogenated-silicon (H-Si) substrates. Several promising IL lubricants were identified from the AFM study and were tested in real MEMS motor devices. The friction and wear data obtained for these tests showed good correlation with the failure life span of lubricated MEMS motors. This supports a conclusion that the AFM-liquid-cell technique can be used in screening IL lubricants for MEMS devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microelectromechanical Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATOMIC force microscopy KW - SCANNING probe microscopy KW - LUBRICATION & lubricants KW - LUBRICATION systems KW - MICROELECTROMECHANICAL systems KW - ELECTROMECHANICAL devices KW - MECHATRONICS KW - MECHANICAL engineering KW - MICROELECTRONICS N1 - Accession Number: 26207678; Source Information: Aug2007, Vol. 16 Issue 4, p836; Subject Term: ATOMIC force microscopy; Subject Term: SCANNING probe microscopy; Subject Term: LUBRICATION & lubricants; Subject Term: LUBRICATION systems; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: ELECTROMECHANICAL devices; Subject Term: MECHATRONICS; Subject Term: MECHANICAL engineering; Subject Term: MICROELECTRONICS; Subject Term: ; Number of Pages: 8p; ; Illustrations: 5 Diagrams, 1 Chart, 8 Graphs; ; Document Type: Article; L3 - 10.1 109/JMEMS.2007.901628 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=26207678&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Rüggeberg, Jens U. AU - Gold, Michael S. AU - Bayas, José-Maria AU - Blum, Michael D. AU - Bonhoeffer, Jan AU - Friedlander, Sheila AU - de Souza Brito, Glacus AU - Heininger, Ulrich AU - Imoukhuede, Babatunde AU - Khamesipour, Ali AU - Erlewyn-Lajeunesse, Michel AU - Martin, Susana AU - Mäkelä, Mika AU - Nell, Patricia AU - Pool, Vitali AU - Simpson, Nick T1 - Anaphylaxis: Case definition and guidelines for data collection, analysis, and presentation of immunization safety data JO - Vaccine JF - Vaccine Y1 - 2007/08// VL - 25 IS - 31 M3 - Article SP - 5675 EP - 5684 SN - 0264410X KW - Adverse event KW - Anaphylaxis KW - Case definition KW - Guidelines KW - Immunization N1 - Accession Number: 25750817; Rüggeberg, Jens U. 1,2; Gold, Michael S. 3; Bayas, José-Maria 4; Blum, Michael D. 5; Bonhoeffer, Jan 6; Friedlander, Sheila 7; de Souza Brito, Glacus 8; Heininger, Ulrich 6; Email Address: secretariat@brightoncollaboration.org; Imoukhuede, Babatunde 9; Khamesipour, Ali 10; Erlewyn-Lajeunesse, Michel 11; Martin, Susana 12; Mäkelä, Mika 13; Nell, Patricia 14; Pool, Vitali 15; Simpson, Nick 16; Affiliations: 1: Pädiatrische Infektiologie, Universitätskinderklinik Düsseldorf, Germany; 2: St. Georges Hospital Medical School, London, UK; 3: South Australian Immunisation Coordination Unit, University of Adelaide, Australia; 4: Hospital Clinic i Provincial de Barcelona, Barcelona, Spain; 5: Wyeth Research, Collegeville, PA, USA; 6: University Children's Hospital, Basel, Switzerland; 7: University of California San Diego Medical Center, La Jolla, USA; 8: Sao Paulo State University, Sao Paulo, Brazil; 9: MRC Fajara, Banjul, The Gambia; 10: Tehran University of Medical Sciences, Tehran, Iran; 11: University of Bristol, Bristol, UK; 12: EAP Santa Hortensia, Area 2, Madrid, Spain; 13: University Central Hospital Helsinki, Finland; 14: Airforce Reserve Command, United States Air Force, Sturgeon Bay, WI, USA; 15: Centers for Disease Control and Prevention, Atlanta, GA, USA; 16: John Curtin School of Medical Research, Canberra, Australia; Issue Info: Aug2007, Vol. 25 Issue 31, p5675; Author-Supplied Keyword: Adverse event; Author-Supplied Keyword: Anaphylaxis; Author-Supplied Keyword: Case definition; Author-Supplied Keyword: Guidelines; Author-Supplied Keyword: Immunization; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=25750817&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Beigel, John AU - Kohl, Katrin S. AU - Khuri-Bulos, Najwa AU - Bravo, Lulu AU - Nell, Patricia AU - Marcy, S. Michael AU - Warschaw, Karen AU - Ong-Lim, Anna AU - Poerschke, Gabriele AU - Weston, William AU - Lindstrom, Jill A. AU - Stoltman, Gillian AU - Maurer, Toby T1 - Rash including mucosal involvement: Case definition and guidelines for collection, analysis, and presentation of immunization safety data JO - Vaccine JF - Vaccine Y1 - 2007/08// VL - 25 IS - 31 M3 - Article SP - 5697 EP - 5706 SN - 0264410X KW - Adverse event KW - Case definition KW - Guidelines KW - Immunization KW - Mucocutaneous KW - Rash N1 - Accession Number: 25750819; Beigel, John 1; Kohl, Katrin S. 2; Email Address: secretariat@brightoncollaboration.org; Khuri-Bulos, Najwa 3; Bravo, Lulu 4; Nell, Patricia 5; Marcy, S. Michael 6; Warschaw, Karen 7; Ong-Lim, Anna 4; Poerschke, Gabriele 8; Weston, William 9; Lindstrom, Jill A. 10; Stoltman, Gillian 11; Maurer, Toby 12; Affiliations: 1: National Institute of Health, Bethesda, MD, USA; 2: Centers for Disease Control and Prevention, Atlanta, GA, USA; 3: Jordan University Hospital, Amman, Jordan; 4: University of the Philippines, Manila, Philippines; 5: United States Air Force, Sturgeon Bay, WI, USA; 6: University of Southern California and University of California Los Angeles Schools of Medicine, Kaiser Foundation Hospital, Panorama City, CA, USA; 7: Mayo Clinic, Scottsdale, AZ, USA; 8: Merck, Sharp & Dohme (Asia) Ltd., Hong Kong, Hong Kong; 9: University of Colorado, Aurora, CO, USA; 10: Food and Drug Administration, Rockville, MD, USA; 11: Michigan Department of Community Health, Lansing, MI, USA; 12: University of California, San Francisco, CA, USA; Issue Info: Aug2007, Vol. 25 Issue 31, p5697; Author-Supplied Keyword: Adverse event; Author-Supplied Keyword: Case definition; Author-Supplied Keyword: Guidelines; Author-Supplied Keyword: Immunization; Author-Supplied Keyword: Mucocutaneous; Author-Supplied Keyword: Rash; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=25750819&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Nell, Patricia AU - Kohl, Katrin S. AU - Graham, Philip L. AU - LaRussa, Philip S. AU - Marcy, S. Michael AU - Fulginiti, Vincent A. AU - Martin, Bryan AU - Trolin, Ingrid AU - Norton, Scott A. AU - Neff, John M. T1 - Eczema vaccinatum as an adverse event following exposure to vaccinia virus: Case definition & guidelines of data collection, analysis, and presentation of immunization safety data JO - Vaccine JF - Vaccine Y1 - 2007/08// VL - 25 IS - 31 M3 - Article SP - 5725 EP - 5734 SN - 0264410X KW - Adverse event KW - Case definition KW - Eczema vaccinatum KW - Guidelines KW - Immunization KW - Smallpox vaccine KW - Vaccinia virus N1 - Accession Number: 25750822; Nell, Patricia 1; Kohl, Katrin S. 2; Email Address: secretariat@brightoncollaboration.org; Graham, Philip L. 3; LaRussa, Philip S. 4; Marcy, S. Michael 5; Fulginiti, Vincent A. 6; Martin, Bryan 7; Trolin, Ingrid 8; Norton, Scott A. 9; Neff, John M. 10; Affiliations: 1: Airforce Reserve Command, United States Air Force, Sturgeon Bay, WI, USA; 2: Immunization Safety Office, Office of the Chief Science Officer, Centers for Disease Control and Prevention, Atlanta, GA, USA; 3: Department of Pediatrics, College of Physicians & Surgeons, Columbia University, Department of Epidemiology, New York Presbyterian Hospital, New York, NY, USA; 4: Department of Pediatrics, College of Physicians and Surgeons, Columbia University, New York, NY, USA; 5: University of Southern California and University of California Los Angeles Schools of Medicine, Kaiser Foundation Hospital, Panorama City, CA, USA; 6: Department of Pediatrics, University of Arizona, Tucson, AZ and University of Colorado, Denver, CO, USA; 7: Department of Allergy and Immunology, Walter Reed Army Hospital, Washington, DC, USA; 8: Medical Product Agency, Uppsala, Sweden; 9: Walter Reed Army Medical Center, Washington, DC, USA; 10: Children's Hospital and Regional Medical Center, Seattle, WA, USA; Issue Info: Aug2007, Vol. 25 Issue 31, p5725; Author-Supplied Keyword: Adverse event; Author-Supplied Keyword: Case definition; Author-Supplied Keyword: Eczema vaccinatum; Author-Supplied Keyword: Guidelines; Author-Supplied Keyword: Immunization; Author-Supplied Keyword: Smallpox vaccine; Author-Supplied Keyword: Vaccinia virus; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.vaccine.2007.02.085 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=25750822&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Nell, Patricia AU - Kohl, Katrin S. AU - Graham, Philip L. AU - LaRussa, Philip S. AU - Marcy, S. Michael AU - Fulginiti, Vincent A. AU - Martin, Bryan AU - McMahon, Ann AU - Norton, Scott A. AU - Trolin, Ingrid T1 - Progressive vaccinia as an adverse event following exposure to vaccinia virus: Case definition and guidelines of data collection, analysis, and presentation of immunization safety data JO - Vaccine JF - Vaccine Y1 - 2007/08// VL - 25 IS - 31 M3 - Article SP - 5735 EP - 5744 SN - 0264410X KW - Adverse event KW - Case definition KW - Guidelines KW - Immunization KW - Progressive vaccinia KW - Smallpox vaccine KW - Vaccinia virus N1 - Accession Number: 25750823; Nell, Patricia 1; Kohl, Katrin S. 2; Email Address: secretariat@brightoncollaboration.org; Graham, Philip L. 3; LaRussa, Philip S. 4; Marcy, S. Michael 5; Fulginiti, Vincent A. 6; Martin, Bryan 7; McMahon, Ann 8; Norton, Scott A. 9; Trolin, Ingrid 10; Affiliations: 1: Airforce Reserve Command, United States Air Force, Sturgeon Bay, WI, USA; 2: Immunization Safety Office, Office of the Chief Science Officer, Centers for Disease Control and Prevention, Atlanta, GA, USA; 3: Department of Pediatrics, College of Physicians & Surgeons, Columbia University, Department of Epidemiology, New York Presbyterian Hospital, New York, NY, USA; 4: Department of Pediatrics, College of Physicians and Surgeons, Columbia University, New York, NY, USA; 5: University of Southern California and University of California Los Angeles Schools of Medicine; Kaiser Foundation Hospital, Panorama City, CA, USA; 6: Department of Pediatrics, University of Arizona Tucson, AZ and University of Colorado, Denver, CO, USA; 7: Department of Allergy and Immunology, Walter Reed Army Hospital, Washington, DC, USA; 8: Vaccine Safety Branch, Food and Drug Administration, Rockville, MD, USA; 9: Walter Reed Army Medical Center, Washington, DC, USA; 10: Medical Product Agency, Uppsala, Sweden; Issue Info: Aug2007, Vol. 25 Issue 31, p5735; Author-Supplied Keyword: Adverse event; Author-Supplied Keyword: Case definition; Author-Supplied Keyword: Guidelines; Author-Supplied Keyword: Immunization; Author-Supplied Keyword: Progressive vaccinia; Author-Supplied Keyword: Smallpox vaccine; Author-Supplied Keyword: Vaccinia virus; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.vaccine.2007.02.088 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=25750823&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Beigel, John AU - Kohl, Katrin S. AU - Brinley, Floyd AU - Graham, Philip L. AU - Khuri-Bulos, Najwa AU - LaRussa, Philip S. AU - Nell, Patricia AU - Norton, Scott AU - Stoltman, Gillian AU - Tebaa, Amina AU - Warschaw, Karen T1 - Generalized vaccinia as an adverse event following exposure to vaccinia virus: Case definition and guidelines for data collection, analysis, and presentation of immunization safety data JO - Vaccine JF - Vaccine Y1 - 2007/08// VL - 25 IS - 31 M3 - Article SP - 5745 EP - 5753 SN - 0264410X KW - Adverse event KW - Case definition KW - Generalized vaccinia KW - Guidelines KW - Immunization KW - Smallpox vaccine KW - Vaccinia virus N1 - Accession Number: 25750824; Beigel, John 1; Kohl, Katrin S. 2; Email Address: secretariat@brightoncollaboration.org; Brinley, Floyd 3; Graham, Philip L. 4; Khuri-Bulos, Najwa 5; LaRussa, Philip S. 6; Nell, Patricia 7; Norton, Scott 8; Stoltman, Gillian 9; Tebaa, Amina 10; Warschaw, Karen 11; Affiliations: 1: NIH Clinical Center, National Institute of Health, Bethesda, MD, USA; 2: Immunization Safety Office, Office of the Chief Science Officer, Centers for Disease Control and Prevention, Atlanta, GA, USA; 3: National Institute of Neurological Disorders & Stroke (retired), National Institute of Health, Bethesda, MD, USA; 4: Department of Pediatrics, College of Physicians & Surgeons, Columbia University, Department of Epidemiology, New York Presbyterian Hospital, New York, NY, USA; 5: Division of Pediatric Infectious Diseases, Jordan University Hospital, Amman, Jordan; 6: Department of Pediatrics, College of Physicians and Surgeons, Columbia University, New York, NY, USA; 7: Airforce Reserve Command (retired), United States Air Force, Sturgeon Bay, WI, USA; 8: Walter Reed Army Medical Center, Washington, DC, USA; 9: Division of Communicable Disease and Immunization, Michigan Department of Community Health, Lansing, MI, USA; 10: Centre Antipoison et de Pharmacovigilance, Rabat, Morocco; 11: Departments of Dermatology and Pathology, Mayo Clinic Scottsdale, Scottsdale, AZ, USA; Issue Info: Aug2007, Vol. 25 Issue 31, p5745; Author-Supplied Keyword: Adverse event; Author-Supplied Keyword: Case definition; Author-Supplied Keyword: Generalized vaccinia; Author-Supplied Keyword: Guidelines; Author-Supplied Keyword: Immunization; Author-Supplied Keyword: Smallpox vaccine; Author-Supplied Keyword: Vaccinia virus; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.vaccine.2007.02.086 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=25750824&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2007-15250-036 AN - 2007-15250-036 AU - Repperger, Daniel W. AU - Aleva, Denise L. AU - Thomas, Gina AU - Miller, Janet E. AU - Fullenkamp, Stephen C. T1 - Complexity of visual icons studied via signal detection theory. JF - Perceptual and Motor Skills JO - Perceptual and Motor Skills JA - Percept Mot Skills Y1 - 2007/08// VL - 105 IS - 1 SP - 287 EP - 298 CY - US PB - Perceptual & Motor Skills SN - 0031-5125 SN - 1558-688X AD - Repperger, Daniel W., Air Force Research Laboratory, AFRL/HECV, Wright-Patterson AFB, OH, US, 45433 N1 - Accession Number: 2007-15250-036. PMID: 17918577 Other Journal Title: Perceptual & Motor Skills Research Exchange. Partial author list: First Author & Affiliation: Repperger, Daniel W.; Air Force Research Laboratory, Wright-Patterson AFB, OH, US. Other Publishers: Sage Publications. Release Date: 20071105. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Signal Detection (Perception); Stimulus Complexity; Symbolism; Visual Perception. Minor Descriptor: Military Psychology. Classification: Visual Perception (2323); Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: Aug, 2007. AB - Two investigations on how humans perceive information from visually rendered complex objects, such as military icons (glyphs) were conducted. A signal detection theory framework was employed to evaluate the sensitivity and specificity of human subject performance. The 6 adults tested showed that as complexity increased, their accuracy in performance decreased. Study 1 showed that complex dimensions (features) could not be assigned arbitrarily. Study 2 developed a rank ordering for features of an iconic object. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - visual icons KW - signal detection theory KW - military icons KW - map glyph reading KW - 2007 KW - Signal Detection (Perception) KW - Stimulus Complexity KW - Symbolism KW - Visual Perception KW - Military Psychology KW - 2007 U1 - Sponsor: AFOSR. Grant: 2313HC54. Recipients: No recipient indicated U1 - Sponsor: CPE (Commanders Predictive Environment) Program. Recipients: No recipient indicated DO - 10.2466/PMS.105.5.287-298 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-15250-036&site=ehost-live&scope=site UR - Daniel.repperger@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-14785-032 AN - 2007-14785-032 AU - Greeley, Harold P. AU - Berg, Joel AU - Friets, Eric AU - Wilson, John AU - Greenough, Glen AU - Picone, Joseph AU - Whitmore, Jeffrey AU - Nesthus, Thomas T1 - Fatigue estimation using voice analysis. JF - Behavior Research Methods JO - Behavior Research Methods JA - Behav Res Methods Y1 - 2007/08// VL - 39 IS - 3 SP - 610 EP - 619 CY - US PB - Psychonomic Society SN - 1554-351X SN - 1554-3528 AD - Greeley, Harold P., Creare Incorporated, Box 71, Hanover, NH, US, 03755 N1 - Accession Number: 2007-14785-032. PMID: 17958175 Other Journal Title: Behavior Research Methods & Instrumentation; Behavior Research Methods, Instruments & Computers. Partial author list: First Author & Affiliation: Greeley, Harold P.; Creare Incorporated, Hanover, NH, US. Other Publishers: Springer. Release Date: 20071029. Correction Date: 20110314. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Auditory Stimulation; Estimation; Fatigue; Oral Communication; Speech Characteristics. Classification: Human Experimental Psychology (2300). Population: Human (10); Male (30). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Aug, 2007. AB - In the present article, we present a means to remotely and transparently estimate an individual's level of fatigue by quantifying changes in his or her voice characteristics. Using Voice analysis to estimate fatigue is unique from established cognitive measures in a number of ways: (1) speaking is a natural activity requiring no initial training or learning curve, (2) voice recording is a unobtrusive operation allowing the speakers to go about their normal work activities, (3) using telecommunication infrastructure (radio, telephone, etc.) a diffuse set of remote populations can be monitored at a central location, and (4) often, previously recorded voice data are available for post hoc analysis. By quantifying changes in the mathematical coefficients that describe the human speech production process, we were able to demonstrate that for speech sounds requiring a large average air flow, a speaker's voice changes in synchrony with both direct measures of fatigue and with changes predicted by the length of time awake. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - fatigue estimation KW - voice analysis KW - voice characteristics KW - speech sounds KW - speech production KW - 2007 KW - Auditory Stimulation KW - Estimation KW - Fatigue KW - Oral Communication KW - Speech Characteristics KW - 2007 U1 - Sponsor: US Air Force, US. Grant: F33615-03-C-6334. Recipients: No recipient indicated DO - 10.3758/BF03193033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-14785-032&site=ehost-live&scope=site UR - hpg.ra@verizon.net DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-10874-009 AN - 2007-10874-009 AU - Boyle, Stephen H. AU - Jackson, William G. AU - Suarez, Edward C. T1 - Hostility, anger, and depression predict increases in C3 over a 10-year period. JF - Brain, Behavior, and Immunity JO - Brain, Behavior, and Immunity JA - Brain Behav Immun Y1 - 2007/08// VL - 21 IS - 6 SP - 816 EP - 823 CY - Netherlands PB - Elsevier Science SN - 0889-1591 SN - 1090-2139 AD - Boyle, Stephen H., Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, P.O. Box 3328, Durham, NC, US, 27710 N1 - Accession Number: 2007-10874-009. PMID: 17321106 Partial author list: First Author & Affiliation: Boyle, Stephen H.; Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC, US. Release Date: 20070917. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Suarez, Edward C. Major Descriptor: Anger; Depression (Emotion); Hostility. Classification: Cardiovascular Disorders (3295). Population: Human (10); Male (30). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Obvious Depression Scale; Cook-Medley Hostility Scale; Minnesota Multiphasic Personality Inventory. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 8. Issue Publication Date: Aug, 2007. AB - We examined the relation of hostility, anger, and depression to 10-year changes in the third (C3), and fourth (C4) complement in 313, apparently healthy male participants enrolled in the Air Force Health Study (AFHS), a 20-year study designed to evaluate the health consequences of dioxin exposure. Hostility, depression, and anger were assessed using subscales from the Minnesota Multiphasic Personality Inventory (MMPI), which was administered in 1985. Given the high inter-correlations among these psychological scales, we used a principal component analysis to generate a composite score representing the linear combination of the hostility, anger, and depression scales. The dependent variables, C3 and C4 levels, were determined from samples collected in 1992, 1997, and 2002. Regression analyses controlling for age, race, alcohol use, body mass index, and cigarette use as well as onset of disease, and use of lipid lowering and blood pressure medications during follow-up revealed a significant time × composite score interaction for C3 complement (p < .0003), but not C4. Post-hoc analyses revealed that high composite scores were associated with larger 10-year increases in C3. These observations suggest that men who are hostile and are prone to experience frequent and intense feelings of anger, and depression show activation of the complement system, and specifically increases in C3, that may contribute to the development of coronary heart disease. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - hostility KW - anger KW - depression KW - dioxin KW - 2007 KW - Anger KW - Depression (Emotion) KW - Hostility KW - 2007 U1 - Sponsor: National Heart, Lung, and Blood Institute. Grant: HL67459. Recipients: Suarez, Edward C. DO - 10.1016/j.bbi.2007.01.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-10874-009&site=ehost-live&scope=site UR - suare001@mc.duke.edu UR - boyle020@mc.duke.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Emamipour, Hamidreza AU - Hashisho, Zaher AU - Cevallos, Diego AU - Rood, Mark J. AU - Thurston, Deborah L. AU - Hay, K. James AU - Kim, Byung J. AU - Sullivan, Patrick D. T1 - Steady-State and Dynamic Desorption of Organic Vapor from Activated Carbon with Electrothermal Swing Adsorption. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2007/07/15/ VL - 41 IS - 14 M3 - Article SP - 5063 EP - 5069 SN - 0013936X AB - A new method to achieve steady-state and dynamic-tracking desorption of organic compounds from activated carbon was developed and tested with a bench-scale system. Activated carbon fiber cloth (ACFC) was used to adsorb methyl ethyl ketone (MEK) from air streams. Direct electrothermal heating was then used to desorb the vapor to generate select vapor concentrations at 500 ppmv and 5000 ppmv in air. Dynamic-tracking desorption was also achieved with carefully controlled yet variable vapor concentrations between 250 ppmv and 5000 ppmv, while also allowing the flow rate of the carrier gas to change by 100%. These results were also compared to conditions when recovering MEK as a liquid, and using microwaves as the source of energy to regenerate the adsorbent to provide MEK as a vapor or a liquid. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Organic compounds KW - Heating KW - Organic chemistry KW - Adsorption KW - Separation (Technology) KW - Thermal desorption KW - Vapors KW - Carbon compounds KW - Electron-stimulated desorption N1 - Accession Number: 25896913; Emamipour, Hamidreza 1; Hashisho, Zaher 1; Cevallos, Diego 1; Rood, Mark J. 1,2; Email Address: mrood@uiuc.edu; Thurston, Deborah L. 1,2; Hay, K. James 3; Kim, Byung J. 3; Sullivan, Patrick D. 4; Affiliations: 1: Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801; 2: Industrial & Enterprise Systems Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801; 3: Engineer Research and Development Center, Construction Engineering Research Laboratory, Champaign, Illinois 61826; 4: Air Force Research Laboratory/MLQL, 139 Barnes Drive, Suite 2, Tyndall AFB, Florida 32403; Issue Info: 7/15/2007, Vol. 41 Issue 14, p5063; Thesaurus Term: Organic compounds; Thesaurus Term: Heating; Thesaurus Term: Organic chemistry; Thesaurus Term: Adsorption; Thesaurus Term: Separation (Technology); Thesaurus Term: Thermal desorption; Thesaurus Term: Vapors; Thesaurus Term: Carbon compounds; Subject Term: Electron-stimulated desorption; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 7p; Illustrations: 2 Diagrams, 2 Charts, 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=25896913&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Kwang June Sohn AU - Hongbin Li AU - Himed, Braham T1 - Parametric Rao Test for Multichannel Adaptive Signal Detection. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2007/07// VL - 43 IS - 3 M3 - Article SP - 920 EP - 933 SN - 00189251 AB - The parametric Rao test for a multichannel adaptive signal detection problem is derived by modeling the disturbance signal as a multichannel autoregressive (AR) process. Interestingly, the parametric Rao test takes a form identical to that of the recently introduced parametric adaptive matched filter (PAMF) detector for space-time adaptive processing (STAP) in airborne surveillance radar systems and other similar applications. The equivalence offers new insights into the performance and implementation of the PAMF detector. Specifically, the Rao/PAMF detector is asymptotically (for large samples) a parametric generalized likelihood ratio test (GLRT), due to an asymptotic equivalence between the Rao test and the GLRT. The asymptotic distribution of the Rao test statistic is obtained in closed form, which follows an exponential distribution under the null hypothesis H0 and, respectively, a noncentral Chi-squared distribution with two degrees of freedom under the alternative hypothesis H1. The noncentrality parameter of the noncentral Chi-squared distribution is determined by the output signal-to-interference-plus-noise ratio (SINR) of a temporal whitening filter. Since the asymptotic distribution under H0 is independent of the unknown parameters, the Rao/PAMF asymptotically achieves constant false alarm rate (CFAR). Numerical results show that these results are accurate in predicting the performance of the parametric Rao/PAMF detector even with moderate data support. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIGNAL detection KW - SIGNAL theory (Telecommunication) KW - MULTICHANNEL communication KW - SIGNAL processing KW - ELECTRONIC systems KW - INFORMATION measurement N1 - Accession Number: 27692710; Kwang June Sohn 1; Hongbin Li 1; Email Address: hli@stevens.edu; Himed, Braham 2; Affiliations: 1: Stevens Institute of Technology; 2: Air Force Research Laboratory; Issue Info: Jul2007, Vol. 43 Issue 3, p920; Subject Term: SIGNAL detection; Subject Term: SIGNAL theory (Telecommunication); Subject Term: MULTICHANNEL communication; Subject Term: SIGNAL processing; Subject Term: ELECTRONIC systems; Subject Term: INFORMATION measurement; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; Number of Pages: 14p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=27692710&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Santos, Ernesto L. AU - Zoltowski, Michael D. AU - Rangaswamy, Muralidhar T1 - Indirect Dominant Mode Rejection: A Solution to Low Sample Support Beamforming. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing J1 - IEEE Transactions on Signal Processing PY - 2007/07//Jul2007 Part 1 Y1 - 2007/07//Jul2007 Part 1 VL - 55 IS - 7 M3 - Article SP - 3283 EP - 3293 SN - 1053587X AB - Under conditions of low sample support, a low-rank solution of the minimum variance distortionless response (MVDR) equations can yield a higher output signal-to-interference-plus-noise ratio (SINR) than the full-rank MVDR beamformer. In this paper, we investigate several low-rank beamforming techniques, and we also propose a new beamformer that we refer to as the indirect dominant mode rejection (IDMR). We analyze the degradation in the output SINR caused by residual cross correlations embedded in the sampled covariance matrix due to low sample support. The IDMR beamformer is based on a parametric estimate of the covariance matrix, in which any cross correlation is canceled out. Simulations reveal that the IDMR beamformer yields a dramatic improvement in output SINR relative to the conjugate gradient (CG), principal component inverse (PCI), and dominant mode rejection (DMR) beamformers. In our investigation of the low-rank CG beamformer, we address the issue of whether the unity gain constraint in the look direction should be enforced a priori via the use of a blocking matrix or effected a posteriori through simple scaling of the beamforming vector. Remarkably, it is proven that the two methods yield exactly the same low-rank beamformer at each and every rank. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATRICES KW - VARIANCES KW - SIGNAL-to-noise ratio KW - COMPUTER simulation KW - CORRELATION (Statistics) KW - EQUATIONS N1 - Accession Number: 25575742; Source Information: Jul2007 Part 1, Vol. 55 Issue 7, p3283; Subject Term: MATRICES; Subject Term: VARIANCES; Subject Term: SIGNAL-to-noise ratio; Subject Term: COMPUTER simulation; Subject Term: CORRELATION (Statistics); Subject Term: EQUATIONS; Subject Term: ; Number of Pages: 11p; ; Illustrations: 3 Black and White Photographs, 1 Chart, 6 Graphs; ; Document Type: Article; L3 - 10.1109/TSP.2007.893926 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=25575742&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Hai Deng AU - Himed, Braham AU - Wicks, Michael C. T1 - Concurrent Extraction of Target Range and Doppler Information by Using Orthogonal Coding Waveforms. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing J1 - IEEE Transactions on Signal Processing PY - 2007/07//Jul2007 Part 1 Y1 - 2007/07//Jul2007 Part 1 VL - 55 IS - 7 M3 - Article SP - 3294 EP - 3301 SN - 1053587X AB - In this paper, a novel approach for concurrent extraction of target range and Doppler information in radar systems is introduced. A pair of orthogonal waveforms with different pulse repetition frequencies (PRF) are bundled and transmitted as a single hybrid radar waveform for target measurement. At the receiver, two orthogonal signal processing channels consisting of a low PRF (LPRF) channel and a high PRF (HPRF) one, perform the extraction of target range and Doppler information, respectively. The CLEAN algorithm is innovatively used to suppress the interference from the cross-correlation residues and the autocorrelation side-lobe in the LPRF channel. The processing results, based on the proposed signal processing approach, demonstrate the technical feasibility of implementing such a signal processing scheme in radar systems. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DOPPLER radar KW - SIGNAL processing KW - DETECTORS KW - RADAR KW - ELECTRONIC systems N1 - Accession Number: 25575743; Source Information: Jul2007 Part 1, Vol. 55 Issue 7, p3294; Subject Term: DOPPLER radar; Subject Term: SIGNAL processing; Subject Term: DETECTORS; Subject Term: RADAR; Subject Term: ELECTRONIC systems; Subject Term: ; Number of Pages: 8p; ; Illustrations: 3 Black and White Photographs, 10 Graphs; ; Document Type: Article; L3 - 10.1109/TSP.2007.894397 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=25575743&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - AU - Jiang, James1 AU - Klein, Gary2 AU - Beck, Phil3 AU - Wang, Eric T.G.4 T1 - Lack of Skill Risks to Organizational Technology Learning and Software Project Performance. JO - Information Resources Management Journal JF - Information Resources Management Journal J1 - Information Resources Management Journal PY - 2007/07//Jul-Sep2007 Y1 - 2007/07//Jul-Sep2007 VL - 20 IS - 3 CP - 3 M3 - Article SP - 32 EP - 45 SN - 10401628 AB - To improve the performance of software projects, a number of practices are encouraged that serve to control certain risks in the development process, including a lack of essential skills and knowledge related to the application domain and system development process. A potential mediating variable between the lack of skill risk and project performance is the ability of an organization to acquire the essential domain knowledge and technology skills through learning, specifically organizational technology learning. However, the same lack of knowledge that hinders good project performance may also inhibit learning. This study examines the relationship between information system personnel skills and domain knowledge, organizational technology learning, and software project performance with a sample of professional software developers. Indications are that the relationship between information systems (IS) personnel skills and project performance is partially mediated by organizational technology learning. [ABSTRACT FROM AUTHOR] KW - Knowledge acquisition (Expert systems) KW - Information resources management KW - Employee training KW - Information resources KW - Organizational learning KW - Ability KW - Management KW - Organization KW - Technology KW - IS project management KW - IS project risk manage- ment KW - IS skill requirements KW - knowledge acquisilion KW - knowledge need KW - organizational knowledge KW - organizational learning KW - project performance N1 - Accession Number: 25267613; Authors: Jiang, James 1; Klein, Gary 2; Beck, Phil 3; Wang, Eric T.G. 4; Affiliations: 1: University of Central Florida, USA; 2: United States Air Force Academy, USA; 3: Southwest Airlines, USA; 4: National Central University, Taiwan; Subject: Knowledge acquisition (Expert systems); Subject: Information resources management; Subject: Organizational learning; Subject: Employee training; Subject: Ability; Subject: Management; Subject: Information resources; Subject: Organization; Subject: Technology; Author-Supplied Keyword: IS project management; Author-Supplied Keyword: IS project risk manage- ment; Author-Supplied Keyword: IS skill requirements; Author-Supplied Keyword: knowledge acquisilion; Author-Supplied Keyword: knowledge need; Author-Supplied Keyword: organizational knowledge; Author-Supplied Keyword: organizational learning; Author-Supplied Keyword: project performance; Number of Pages: 14p; Illustrations: 4 Charts; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=25267613&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - AU - Jiang, James1 AU - Klein, Gary2 AU - Wang, Eric T.G.3 T1 - Relationship of Skill Expectation Gap Between IS Employees and Their Managers with User Satisfaction. JO - Information Resources Management Journal JF - Information Resources Management Journal J1 - Information Resources Management Journal PY - 2007/07//Jul-Sep2007 Y1 - 2007/07//Jul-Sep2007 VL - 20 IS - 3 CP - 3 M3 - Article SP - 63 EP - 75 SN - 10401628 AB - The skills held by information system professionals clearly impact the outcome of a project. However, the perceptions of just what skills are expected of information systems (IS) employees have not been found to be a reliable predictor of eventual success in the literature. Though relationships to success have been identified, the results broadly reported in the literature are often ambiguous or conflicting, presenting difficulties in developing predictive models of success. We examine the perceptions of IS managers and/S employees for technology management, interpersonal, and business skills to determine if their perceptions can serve to predict user satisfaction. Simple gap measures are dismissed as inadequate because weights on the individual expectations are not equal. Exploratory results from polynomial regression models indicate that the problems in defining a predictive model extend beyond the weighting difficulties, as results differ by each skill type. Compound this with inherent problems in the selection of a success measure, and we only begin to understand the complexities in the relationships that may be required in an adequate predictive model relating skills to success. [ABSTRACT FROM AUTHOR] KW - Information technology KW - Computer systems KW - Information resources management KW - Knowledge management KW - Management KW - Social interaction KW - Ability KW - Executives KW - Employees KW - expectancy KW - IS personnel KW - IS skills KW - social interaction KW - user satisfaction N1 - Accession Number: 25267615; Authors: Jiang, James 1; Klein, Gary 2; Wang, Eric T.G. 3; Affiliations: 1: University of Central Florida, USA; 2: United States Air Force Academy, USA; 3: National Central University, Taiwan; Subject: Information technology; Subject: Computer systems; Subject: Information resources management; Subject: Knowledge management; Subject: Management; Subject: Social interaction; Subject: Ability; Subject: Executives; Subject: Employees; Author-Supplied Keyword: expectancy; Author-Supplied Keyword: IS personnel; Author-Supplied Keyword: IS skills; Author-Supplied Keyword: social interaction; Author-Supplied Keyword: user satisfaction; Number of Pages: 13p; Illustrations: 6 Charts, 1 Graph; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=25267615&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - Bhattacharjee, Sudip AU - Zhang, Hong AU - Ramesh, R. AU - Andrews, Dee H. T1 - A Decomposition and Guided Simulation Methodology for Large-Scale System Design: A Study in QoS-Capable Intranets with Fixed and Mobile Components. JO - INFORMS Journal on Computing JF - INFORMS Journal on Computing Y1 - 2007///Summer2007 VL - 19 IS - 3 M3 - Article SP - 429 EP - 442 PB - INFORMS: Institute for Operations Research SN - 10919856 AB - Integrated design of a large-scale distributed system is challenging due to multiple conflicting design objectives, a large number of stochastic parameters, and a combinatorially large design space. Current approaches using decomposition and analysis of isolated subproblems could lead to suboptimization. We develop a framework for integrated design that combines analytical modeling with embedded simulations for large-scale infrastructure planning. The framework uses problem decomposition and a guided simulation methodology, which uses concepts of extrinsic and intrinsic guidance. These are integrated in a comprehensive framework and used to interlink the subproblems and guide the design process towards achieving overall objectives concurrently. A case study demonstrates viability of the framework. The methodology is efficient and flexible, and can be adapted for other problems where resource sharing and integrated system design is critical. [ABSTRACT FROM AUTHOR] AB - Copyright of INFORMS Journal on Computing is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIMULATION methods & models KW - QUALITY of service KW - INTRANETS (Computer networks) KW - DECISION making -- Mathematical models KW - STOCHASTIC processes KW - MATHEMATICAL optimization KW - COMPUTER systems KW - RESEARCH KW - DECOMPOSITION method (Mathematics) KW - INTEGRATED circuit design KW - LARGE scale systems KW - decomposition KW - guidance mechanisms KW - guided simulation KW - large-scale infrastructure design KW - metaheuristics KW - multiple-criteria decision analysis KW - quality of service KW - simulation optimization N1 - Accession Number: 26280036; Bhattacharjee, Sudip 1; Email Address: sbhattacharjee@business.uconn.edu; Zhang, Hong 2; Email Address: hongzhang@missouristate.edu; Ramesh, R. 3; Email Address: rramesh@acsu.buffalo.edu; Andrews, Dee H. 4; Email Address: dee.andrews@mesa.afmc.af.mil; Affiliations: 1: School of Business, University of Connecticut, Storrs, Connecticut 06269; 2: College of Business Administration, Missouri State University, Springfield, Missouri 65897; 3: Department of Management Science and Systems, School of Management, State University of New York at Buffalo, Buffalo, New York 14260; 4: Air Force Research Laboratory, Mesa, Arizona 85206; Issue Info: Summer2007, Vol. 19 Issue 3, p429; Thesaurus Term: SIMULATION methods & models; Thesaurus Term: QUALITY of service; Thesaurus Term: INTRANETS (Computer networks); Thesaurus Term: DECISION making -- Mathematical models; Thesaurus Term: STOCHASTIC processes; Thesaurus Term: MATHEMATICAL optimization; Thesaurus Term: COMPUTER systems; Thesaurus Term: RESEARCH; Subject Term: DECOMPOSITION method (Mathematics); Subject Term: INTEGRATED circuit design; Subject Term: LARGE scale systems; Author-Supplied Keyword: decomposition; Author-Supplied Keyword: guidance mechanisms; Author-Supplied Keyword: guided simulation; Author-Supplied Keyword: large-scale infrastructure design; Author-Supplied Keyword: metaheuristics; Author-Supplied Keyword: multiple-criteria decision analysis; Author-Supplied Keyword: quality of service; Author-Supplied Keyword: simulation optimization; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); Number of Pages: 14p; Illustrations: 3 Diagrams, 8 Charts, 1 Graph; Document Type: Article L3 - 10.1287/ijoc.1050.0173 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=26280036&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Reich, Gregory AU - Sanders, Brian T1 - Introduction to Morphing Aircraft Research. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2007/07//Jul/Aug2007 Y1 - 2007/07//Jul/Aug2007 VL - 44 IS - 4 M3 - Article SP - 1059 EP - 1059 SN - 00218669 AB - The article discusses the background of morphing aircraft. According to the authors, the concept of a variable geometry aircraft had designers excited because the concept enabled them to develop a number of aircraft that can change shape. They add that the concept emphasized the need to evolve air vehicle design to meet demanding performance specifications. It is said that the term morphing is being used to refer to vehicle adaptability of this type, but on a broader sense. The term is also used to describe a nontraditional method of moving vehicle components. There are several challenges related to morphing aircraft including the distributed high-power density actuation concepts. KW - AIRPLANES -- Design & construction KW - GEOMETRY KW - GEOMETRIC modeling KW - ENGINEERING design KW - SYSTEMS design KW - COMBINATORIAL optimization N1 - Accession Number: 26390127; Source Information: Jul/Aug2007, Vol. 44 Issue 4, p1059; Subject Term: AIRPLANES -- Design & construction; Subject Term: GEOMETRY; Subject Term: GEOMETRIC modeling; Subject Term: ENGINEERING design; Subject Term: SYSTEMS design; Subject Term: COMBINATORIAL optimization; Subject Term: ; Number of Pages: 1p; ; Document Type: Article; L3 - 10.2514/1.28287 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=26390127&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Inoyama, Daisaku AU - Sanders, Brian P. AU - Joo, James J. T1 - Topology Synthesis of Distributed Actuation Systems for Morphing Wing Structures. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2007/07//Jul/Aug2007 Y1 - 2007/07//Jul/Aug2007 VL - 44 IS - 4 M3 - Article SP - 1205 EP - 1205 SN - 00218669 AB - This paper presents a novel topology optimization methodology for a synthesis of distributed actuation systems with specific applications to morphing air vehicle structures. The main emphasis is placed on the topology optimization problem formulation and the development of computational modeling concepts. The analysis model is developed to meet several important criteria: It must allow a large rigid-body displacement, as well as a variation in planform area, with minimum strain on structural members while retaining acceptable numerical stability for finite element analysis. For demonstration purposes, the in-plane morphing wing model is presented. Topology optimization is performed on a semiground structure with design variables that control the system configuration. In other words, the state of each element in the model is controlled by a corresponding design variable that, in turn, is determined through the optimization process. In effect, the optimization process assigns morphing members as soft elements, nonmorphing load-bearing members as stiff elements, and nonexistent members as "voids." The optimization process also determines the optimum actuator placement, where each actuator is represented computationally by equal and opposite nodal forces with soft axial stiffness. In addition, the configuration of attachments that connect the morphing structure (i.e., morphing wing) to a nonmorphing structure (i.e., fuselage) is determined simultaneously in the same process. Several different optimization problem formulations are investigated to understand their potential benefits in solution quality, as well as meaningfulness of the formulations. Sample in-plane morphing problems are solved to demonstrate the potential capability of the methodology introduced in this paper. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - AIRPLANE control systems KW - AIRPLANES -- Design & construction KW - FINITE element method KW - ACTUATORS KW - STRUCTURAL optimization N1 - Accession Number: 26390109; Source Information: Jul/Aug2007, Vol. 44 Issue 4, p1205; Subject Term: AIRPLANE wings; Subject Term: AIRPLANE control systems; Subject Term: AIRPLANES -- Design & construction; Subject Term: FINITE element method; Subject Term: ACTUATORS; Subject Term: STRUCTURAL optimization; Subject Term: ; Number of Pages: 1p; ; Document Type: Article; L3 - 10.2514/1.25535 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=26390109&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Lee, H. A. AU - Kim, Y. I. AU - Park, G. J. AU - Kolonay, R. M. AU - Blair, M. AU - Canfield, R. A. T1 - Structural Optimization of a Joined Wing Using Equivalent Static Loads. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2007/07//Jul/Aug2007 Y1 - 2007/07//Jul/Aug2007 VL - 44 IS - 4 M3 - Article SP - 1302 EP - 1302 SN - 00218669 AB - The joined wing is a new concept of the airplane wing. The forewing and the aft wing are joined together in a joined wing. The range and loiter are longer than those of a conventional wing. The joined wing can lead to increased aerodynamic performance and reduction of the structural weight. In this research, dynamic response optimization of a joined wing is carried out by using equivalent static loads. Equivalent static loads are made to generate the same displacement field as that from dynamic loads at each time step of dynamic analysis. The gust loads are considered as critical loading conditions and they dynamically act on the structure of the aircraft. It is difficult to identify the exact gust-load profile; therefore, the dynamic loads are assumed to be a one-cosine function. Static response optimization is performed for the two cases: one uses the same design variable definition as dynamic response optimization, and the other uses the thicknesses of all elements as design variables; the results are then compared. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - AIRPLANES -- Design & construction KW - AIRPLANES -- Handling characteristics KW - DEAD loads (Mechanics) KW - ATMOSPHERIC turbulence KW - AERODYNAMICS N1 - Accession Number: 26390119; Source Information: Jul/Aug2007, Vol. 44 Issue 4, p1302; Subject Term: AIRPLANE wings; Subject Term: AIRPLANES -- Design & construction; Subject Term: AIRPLANES -- Handling characteristics; Subject Term: DEAD loads (Mechanics); Subject Term: ATMOSPHERIC turbulence; Subject Term: AERODYNAMICS; Subject Term: ; Number of Pages: 1p; ; Document Type: Article; L3 - 10.2514/1.26869 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=26390119&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 106141879 T1 - Fibromyalgia -- management of a misunderstood disorder. AU - Peterson EL Y1 - 2007/07// N1 - Accession Number: 106141879. Language: English. Entry Date: 20070831. Revision Date: 20150819. Publication Type: Journal Article; review; tables/charts. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. Special Interest: Advanced Nursing Practice; Evidence-Based Practice. NLM UID: 8916634. KW - Fibromyalgia KW - Anticonvulsants KW - Antidepressive Agents KW - Diagnosis, Differential KW - Diagnosis, Laboratory KW - Fibromyalgia -- Diagnosis KW - Fibromyalgia -- Drug Therapy KW - Fibromyalgia -- Physiopathology KW - Fibromyalgia -- Symptoms KW - Fibromyalgia -- Therapy KW - Medical Practice, Evidence-Based KW - Muscle Relaxants, Central KW - Physical Examination SP - 341 EP - 348 JO - Journal of the American Academy of Nurse Practitioners JF - Journal of the American Academy of Nurse Practitioners JA - J AM ACAD NURSE PRACT VL - 19 IS - 7 CY - Malden, Massachusetts PB - Wiley-Blackwell SN - 1041-2972 AD - United States Air Force, Aviano Air Base, Italy U2 - PMID: 17680899. DO - 10.1111/j.1745-7599.2007.00235.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106141879&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Wroblewski, Donald E. AU - Coté, Owen R. AU - Hacker, Jorg M. AU - Dobosy, Ron J. T1 - Cliff–Ramp Patterns and Kelvin–Helmholtz Billows in Stably Stratified Shear Flow in the Upper Troposphere: Analysis of Aircraft Measurements. JO - Journal of the Atmospheric Sciences JF - Journal of the Atmospheric Sciences Y1 - 2007/07// VL - 64 IS - 7 M3 - Article SP - 2521 EP - 2539 PB - American Meteorological Society SN - 00224928 AB - Cliff–ramp patterns (CR) are a common feature of scalar turbulence, characterized by a sharp temperature increase (cliff) followed by a more gradual temperature decrease (ramp). Aircraft measurements obtained from NOAA best aircraft turbulence probes (BAT) were used to characterize and compare CR patterns observed under stably stratified conditions in the upper troposphere, a region for which there are few such studies. Experimental data were analyzed for three locations, one over Wales and two over southern Australia, the latter in correspondence with the Southern Hemisphere winter subtropical jet stream. Comparison of observed CR patterns with published direct numerical simulations (DNS) revealed that they were likely signatures of Kelvin–Helmholtz (KH) billows, with the ramps associated with the well-mixed billows and the cliffs marking the highly stretched braids. Strong correlation between potential temperature and horizontal velocity supported the KH link, though expected correlations with vertical velocity were not observed. The temperature fronts associated with the cliffs were oriented in a direction approximately normal to the mean wind direction. Locally high values of temperature structure constant near these fronts were associated with steep temperature gradients across the fronts; this may be misleading in the context of electromagnetic propagation, suggesting a false positive indication of high levels of small-scale turbulence that would not correspond to scintillation effects. Billow aspect ratios, braid angles, and length scales were estimated from the data and comparisons with published DNS provided a means for assessing the stage of evolution of the KH billows and the initial Richardson number of the layer. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Atmospheric Sciences is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Troposphere KW - Atmospheric turbulence KW - Fronts (Meteorology) KW - Atmospheric temperature KW - Shear flow KW - Airplanes N1 - Accession Number: 25972512; Wroblewski, Donald E. 1; Email Address: dew11@bu.edu; Coté, Owen R. 2; Hacker, Jorg M. 3; Dobosy, Ron J. 4; Affiliations: 1: Boston University, Boston, Massachusetts; 2: Air Force Research Laboratory, Hanscom AFB, Massachusetts; 3: Flinders University, Adelaide, Australia; 4: NOAA/ERL/ARL, Oak Ridge, Tennessee; Issue Info: Jul2007, Vol. 64 Issue 7, p2521; Thesaurus Term: Troposphere; Thesaurus Term: Atmospheric turbulence; Thesaurus Term: Fronts (Meteorology); Thesaurus Term: Atmospheric temperature; Subject Term: Shear flow; Subject Term: Airplanes; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; Number of Pages: 19p; Illustrations: 2 Diagrams, 6 Charts, 11 Graphs; Document Type: Article L3 - 10.1175/JAS3956.1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=25972512&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Paulus, Brian F. AU - Bazar, Matthew A. AU - Salice, Christopher J. AU - Mattie, David R. AU - Major, Michael A. T1 - Perchlorate Inhibition of Iodide Uptake in Normal and Iodine-deficient Rats. JO - Journal of Toxicology & Environmental Health: Part A JF - Journal of Toxicology & Environmental Health: Part A Y1 - 2007/07// VL - 70 IS - 13 M3 - Article SP - 1142 EP - 1149 SN - 15287394 AB - Perchlorate-induced inhibition of thyroidal iodide uptake was measured in normal and iodine-deficient female Sprague-Dawley rats. Rats that were made iodine-deficient by long-term restriction of iodine in the diet absorbed a gavage dose of 131I to the thyroid in proportionally greater amounts than rats fed a normal diet. Furthermore, the iodine-deficient rats maintained their high rates of absorption even when challenged by levels of perchlorate in their drinking water sufficient to produce pronounced inhibition of 131I uptake in rats fed a normal diet. Every dose of perchlorate used in this study (1.1, 5.6, and 28 mg/L) produced significant inhibition of iodide uptake in normally fed rats, but only the highest level of perchlorate (28 mg/L) significantly inhibited thyroidal uptake of 131I in the iodine-deficient rats. Taken together, these results demonstrate that iodide-deficient animals exhibit increased resistance to the inhibition of iodine absorption resulting from perchlorate exposure. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Toxicology & Environmental Health: Part A is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSIOLOGY KW - Perchlorates KW - Chemical inhibitors KW - Absorption KW - Rats KW - Iron deficiency diseases KW - Iodides KW - Tube feeding KW - Thyroid gland KW - Diet -- Physiological aspects N1 - Accession Number: 25346976; Paulus, Brian F. 1; Bazar, Matthew A. 1; Salice, Christopher J. 1; Mattie, David R. 2; Major, Michael A. 1; Email Address: Mick.Major@us.army.mil; Affiliations: 1: Directorate of Toxicology, Health Effects Research Program, U.S. Army Center for Health Promotion and Preventive Medicine. Aberdeen Proving Ground, Maryland. USA; 2: Air Force Research Laboratory, HEPB, Wright-Patterson Air Force Base. Ohio. USA; Issue Info: Jul2007, Vol. 70 Issue 13, p1142; Thesaurus Term: PHYSIOLOGY; Thesaurus Term: Perchlorates; Thesaurus Term: Chemical inhibitors; Thesaurus Term: Absorption; Subject Term: Rats; Subject Term: Iron deficiency diseases; Subject Term: Iodides; Subject Term: Tube feeding; Subject Term: Thyroid gland; Subject Term: Diet -- Physiological aspects; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 8p; Illustrations: 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1080/15287390701252741 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=25346976&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 105859520 T1 - Cutaneous lymphomas. AU - Smith BD AU - Wilson LD Y1 - 2007/07// N1 - Accession Number: 105859520. Language: English. Entry Date: 20080314. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. Special Interest: Diagnostic Imaging; Oncologic Care. NLM UID: 9202882. KW - Lymphoma, Non-Hodgkin's -- Radiotherapy KW - Skin Neoplasms -- Radiotherapy KW - Lymphoma, B-Cell -- Diagnosis KW - Lymphoma, B-Cell -- Radiotherapy KW - Lymphoma, Non-Hodgkin's -- Diagnosis KW - Lymphoma, T-Cell, Cutaneous -- Diagnosis KW - Lymphoma, T-Cell, Cutaneous -- Radiotherapy KW - Mycosis Fungoides -- Diagnosis KW - Mycosis Fungoides -- Radiotherapy KW - Palliative Care KW - Radiotherapy KW - Sezary Syndrome -- Diagnosis KW - Sezary Syndrome -- Radiotherapy KW - Skin Neoplasms -- Diagnosis SP - 158 EP - 168 JO - Seminars in Radiation Oncology JF - Seminars in Radiation Oncology JA - SEMIN RADIAT ONCOL VL - 17 IS - 3 CY - Philadelphia, Pennsylvania PB - W B Saunders AB - The skin is the most common site of extranodal non-Hodgkin lymphoma, with a yearly incidence approaching 1 per 100,000 individuals in the United States. Skin lymphomas are classified broadly into cutaneous T-cell lymphoma (CTCL) and cutaneous B-cell lymphoma (CBCL). Within these broad categories, multiple unique pathologic entities exist with a wide array of natural histories and treatment options. Radiotherapy plays an important role in the curative treatment of localized CTCL and CBCL and may be used to palliate cutaneous and visceral symptoms associated with advanced disease. This review highlights the role of radiotherapy in the multidisciplinary management of cutaneous lymphoma.Copyright © 2007 by Elsevier Inc. SN - 1053-4296 AD - United States Air Force, Wilford Hall Medical Center, Lackland AFB, TX, USA. U2 - PMID: 17591562. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=105859520&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2007-12138-001 AN - 2007-12138-001 AU - Peterson, Erin L. T1 - Fibromyalgia--Management of a misunderstood disorder. JF - Journal of the American Academy of Nurse Practitioners JO - Journal of the American Academy of Nurse Practitioners JA - J Am Acad Nurse Pract Y1 - 2007/07// VL - 19 IS - 7 SP - 341 EP - 348 CY - United Kingdom PB - Blackwell Publishing SN - 1041-2972 SN - 1745-7599 AD - Peterson, Erin L., PSC 103, Box 2362, APO AE 09603, Italy N1 - Accession Number: 2007-12138-001. PMID: 17680899 Other Journal Title: Journal of the American Association of Nurse Practitioners. Partial author list: First Author & Affiliation: Peterson, Erin L.; United States Air Force, Aviano Air Base, Italy. Other Publishers: Wiley-Blackwell Publishing Ltd. Release Date: 20071119. Correction Date: 20131125. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Disease Management; Fibromyalgia; Nursing. Minor Descriptor: Etiology; Nurses; Pathophysiology. Classification: Medical Treatment of Physical Illness (3363). Population: Human (10). Methodology: Literature Review. References Available: Y. Page Count: 8. Issue Publication Date: Jul, 2007. AB - Purpose: The purpose of this article is to review (a) what is currently known about the pathophysiology of fibromyalgia (FM), (b) how to identify patients who are susceptible to this disorder, and (c) the recommended pharmacological and nonpharmacological treatment options. Data sources: Data sources include reviews and original research from scholarly journals and Internet sites. Conclusions: There are approximately 6 million individuals in the United States diagnosed with FM, making it the third most prevalent rheumatologic disorder in this country. Failure to identify a specific causal mechanism for FM has resulted in a shift in the focus of research from etiology to treatment (Baumstark & Buckelew, 2002). Based on the literature, the most successful interventions for reduction of chronic symptoms in the FM patient is a combination of education, psychological assistance, and exercise, along with medications. It is essential that nurse practitioners (NPs) understand the issues and concerns of patients afflicted with this complex disorder. Although the organic etiology of FM syndrome remains unclear, the goals of treatment are to control pain and improve adjustment, well-being, and daily functioning of these patients to the maximum extent possible. Implications for practice: NPs are in a unique position to help identify patients who may be suffering from FM or those diagnosed with FM reporting inadequate relief of symptoms. The incomplete understanding of the biological underpinnings, as well as the multiple symptoms that characterize FM syndrome, make it a challenging disorder to diagnose and treat. It takes time and patience to care for FM patients, and there are no 'quick fixes.' Diagnosis is made by a combination of patient history, physical examination, laboratory evaluations, and exclusion of other causes of symptoms confused with FM. Understanding the symptomology and recommended treatments will allow NPs to give appropriate care that may include making referrals for multidisciplinary treatment of these complex patients. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - fibromyalgia KW - misunderstood disorder management KW - pathophysiology KW - etiology KW - nurse practitioners KW - 2007 KW - Disease Management KW - Fibromyalgia KW - Nursing KW - Etiology KW - Nurses KW - Pathophysiology KW - 2007 DO - 10.1111/j.1745-7599.2007.00235.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-12138-001&site=ehost-live&scope=site UR - erin.peterson@aviano.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Bezinger, A. AU - Liu, H.C. AU - Aslan, B. AU - Buchanan, M. AU - Springthorpe, A.J. AU - Poole, P.J. AU - Cardimona, D.A. AU - Brown, G.J. T1 - Dual spectral InGaAs/InP quantum-well infrared photodetector focal plane array. JO - Electronics Letters JF - Electronics Letters Y1 - 2007/06/07/ VL - 43 IS - 12 M3 - Article SP - 685 EP - 686 SN - 00135194 AB - The realisation of an InGaAs/InP quantum-well infrared photodetector focal plane array imaging device is reported. The long-wave infrared response is based on the intersubband transition (intraband) in the quantum wells. In addition, a near infrared (interband) response is demonstrated. This work shows the potential of the InGaAs/InP materials system for multi-spectral imaging applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTOELECTRONIC devices KW - IMAGING systems KW - ENERGY bands KW - ELECTRIC waves KW - OPTOELECTRONICS N1 - Accession Number: 25334378; Bezinger, A. 1; Liu, H.C. 1; Email Address: h.c.liu@nrc.ca; Aslan, B. 1; Buchanan, M. 1; Springthorpe, A.J. 1; Poole, P.J. 1; Cardimona, D.A. 2; Brown, G.J. 3; Affiliations: 1: Institute for Microstructural Sciences, National Research Council Ottawa, Ontario, Canada; 2: Air Force Research Laboratory, Kirtland AFB, NM, USA; 3: Air Force Research Laboratory, OH, USA; Issue Info: 6/7/2007, Vol. 43 Issue 12, p685; Subject Term: OPTOELECTRONIC devices; Subject Term: IMAGING systems; Subject Term: ENERGY bands; Subject Term: ELECTRIC waves; Subject Term: OPTOELECTRONICS; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 2p; Illustrations: 1 Illustration, 1 Graph; Document Type: Article L3 - 10.1049/el:20070966 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=25334378&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Levin, G. A. AU - Barnes, P. N. AU - Amemiya, N. T1 - Low ac Loss Multifilament Coated Conductors. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2007/06/03/Jun2007 Part 3 of 3 Y1 - 2007/06/03/Jun2007 Part 3 of 3 VL - 17 IS - 2 M3 - Article SP - 3148 EP - 3150 SN - 10518223 AB - We report the magnetization losses in an experimental multifilament coated conductor. A 4 mm wide and 10 cm long YBCO coated conductor was subdivided into eight 0.5 mm wide filaments by laser ablation and subjected to post-ablation treatment. As the result, the hysteresis loss was reduced, as expected, in proportion to the width of the filaments. However, the coupling losses were reduced dramatically, and became practically negligible, in the range of a sweep rate up to 20 T/s. This represents a drastic improvement on previous multifilament conductors in which often the coupling losses became equal to the hysteresis loss at a sweep rate as low as 3–4 T/s. These results demonstrate that there is an effective and practical way to suppress coupling losses in coated multifilament conductors. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALTERNATING currents KW - ELECTRIC power systems -- Electric losses KW - ELECTRIC conductors KW - METALS -- Mechanical properties KW - SUPERCONDUCTORS KW - SUPERCONDUCTIVITY KW - MICROMACHINING KW - METALLIC oxides KW - OXIDATION N1 - Accession Number: 26294413; Source Information: Jun2007 Part 3 of 3, Vol. 17 Issue 2, p3148; Subject Term: ALTERNATING currents; Subject Term: ELECTRIC power systems -- Electric losses; Subject Term: ELECTRIC conductors; Subject Term: METALS -- Mechanical properties; Subject Term: SUPERCONDUCTORS; Subject Term: SUPERCONDUCTIVITY; Subject Term: MICROMACHINING; Subject Term: METALLIC oxides; Subject Term: OXIDATION; Subject Term: ; Number of Pages: 3p; ; Illustrations: 2 Diagrams, 1 Graph; ; Document Type: Article; L3 - 10.1109/TASC.2007.899012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=26294413&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Polak, M. AU - Kvitkovic, J. AU - Mozola, P. AU - Barnes, Paul N. AU - Levin, George A. T1 - Characterization of Individual Filaments in a Multifilamentary YBCO Coated Conductor. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2007/06/03/Jun2007 Part 3 of 3 Y1 - 2007/06/03/Jun2007 Part 3 of 3 VL - 17 IS - 2 M3 - Article SP - 3163 EP - 3166 SN - 10518223 AB - Striation of wide YBCO coated conductor tapes is necessary to reduce the hysteresis losses. However, the processes used to striate the films may adversely affect the overall critical current of the tape not only by simple removal of superconducting material, but by introducing additional defects. We studied the transport properties of individual filaments of a filamentary YBCO tape on Hastelloy substrate striated by laser ablation. The tape consisted of 24 parallel filaments 0.5 mm wide, covered by thin Ag layer. I–V curves on 9 cm long filament sections as well as the changes of the critical current along the filament were measured at 77 K in magnetic fields up to 70 mT. 8 of 24 filaments were experimentally characterized by the mean value of the critical current and the associated n-value. The best filament had a critical current of ∼7 A at 1 microvolt/cm and B = 0. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductors KW - CRITICAL currents KW - SUPERCONDUCTORS KW - SUPERCONDUCTIVITY KW - MAGNETIC fields KW - ALTERNATING currents KW - MICROSCOPY KW - MAGNETIC induction KW - ELECTRIC currents N1 - Accession Number: 26294417; Source Information: Jun2007 Part 3 of 3, Vol. 17 Issue 2, p3163; Subject Term: ELECTRIC conductors; Subject Term: CRITICAL currents; Subject Term: SUPERCONDUCTORS; Subject Term: SUPERCONDUCTIVITY; Subject Term: MAGNETIC fields; Subject Term: ALTERNATING currents; Subject Term: MICROSCOPY; Subject Term: MAGNETIC induction; Subject Term: ELECTRIC currents; Subject Term: ; Number of Pages: 4p; ; Illustrations: 2 Diagrams, 7 Graphs; ; Document Type: Article; L3 - 10.1109/TASC.2007.898266 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=26294417&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kwon, C. AU - Young, J. L. AU - James, R. G. AU - Levin, George A. AU - Haugan, Timothy J. AU - Barnes, Paul N. T1 - Local Current Transport and Current Sharing Between Filaments in Striated Coated Conductors With Artificial Defects. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2007/06/03/Jun2007 Part 3 of 3 Y1 - 2007/06/03/Jun2007 Part 3 of 3 VL - 17 IS - 2 M3 - Article SP - 3191 EP - 3194 SN - 10518223 AB - Multifilamentary YBCO coated conductor with fishnet striation pattern is investigated by transport measurements and scanning laser microscopy (SLM). Each filament is clearly visible in SLM images, and higher current flows along the edges of filaments. After initial measurements, an incision is made to disable two filaments and to investigate the changes in the current transport, the current sharing, and the dissipation patterns. Current sharing and redistribution are clearly observed among the filaments and at the weak links. We find that the dissipation is mainly caused by local current crowding. Since the current is to be shared among intact filaments, the most impacted area is the filaments closer to the disabled ones which have to carry higher current. The other susceptible area is the weak links where the current redistributes and the increased current density is expected. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductors KW - ELECTRIC currents KW - FIBERS KW - METAL fibers KW - FISHING nets KW - MICROSCOPY KW - SCANNING electron microscopy KW - OPTICAL images KW - OPTICS N1 - Accession Number: 26294424; Source Information: Jun2007 Part 3 of 3, Vol. 17 Issue 2, p3191; Subject Term: ELECTRIC conductors; Subject Term: ELECTRIC currents; Subject Term: FIBERS; Subject Term: METAL fibers; Subject Term: FISHING nets; Subject Term: MICROSCOPY; Subject Term: SCANNING electron microscopy; Subject Term: OPTICAL images; Subject Term: OPTICS; Subject Term: ; Number of Pages: 4p; ; Illustrations: 3 Diagrams, 1 Graph; ; Document Type: Article; L3 - 10.1109/TASC.2007.897914 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=26294424&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Maiorov, B. AU - Jia, Q. X. AU - Zhou, H. AU - Wang, H. AU - Li, Y. AU - Kursunovic, A. AU - MacManus-Driscoll, J. L. AU - Haugan, T. J. AU - Barnes, P. N. AU - Foltyn, S. R. AU - Civale, L. T1 - Effects of the Variable Lorentz Force on the Critical Current in Anisotropic Superconducting Thin Films. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2007/06/03/Jun2007 Part 3 of 3 Y1 - 2007/06/03/Jun2007 Part 3 of 3 VL - 17 IS - 2 M3 - Article SP - 3697 EP - 3700 SN - 10518223 AB - When a current is applied perpendicular to the vortex lattice (VL), Lorentz force may cause the VL to drift and flux-flow dissipation is observed. When the current is parallel to the applied magnetic field in a Force-Free (FF) configuration, a dissipation is also observed but at higher values of applied current. It has been suggested that pinning as well as free surfaces play an important role in the stabilization of the VL in the FF configuration. In YBa2Cu3O7 thin films, FF configurations can be obtained when H ∥ ab with the current flowing parallel to the ab-planes. In this work we study the influence of thickness, growth method and pinning centers on the dissipation mechanism at Variable Lorentz Force and FF configurations. Comparisons of experiments done at Maximum and Variable Lorentz Force show that there are two pinning regimes when the field is rotated in these configurations; one consistent with only a decrease in the applied force, indicated by the overlap of the power law exponent of the current-voltage curves as the field is rotated toward the ab-planes, and another very close to the ab-planes, where the dissipation characteristics change. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - SUPERCONDUCTIVITY KW - CRITICAL currents KW - SUPERCONDUCTORS KW - LATTICE dynamics KW - MAGNETIC fields KW - SOLID state electronics KW - ELECTRIC currents KW - FLUX pinning N1 - Accession Number: 26294551; Source Information: Jun2007 Part 3 of 3, Vol. 17 Issue 2, p3697; Subject Term: THIN films; Subject Term: SUPERCONDUCTIVITY; Subject Term: CRITICAL currents; Subject Term: SUPERCONDUCTORS; Subject Term: LATTICE dynamics; Subject Term: MAGNETIC fields; Subject Term: SOLID state electronics; Subject Term: ELECTRIC currents; Subject Term: FLUX pinning; Subject Term: ; Number of Pages: 4p; ; Illustrations: 1 Diagram, 1 Chart, 4 Graphs; ; Document Type: Article; L3 - 10.1109/TASC.2007.898364 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=26294551&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Varanasi, Chakrapani V. AU - Nalladega, Vijay AU - Sathish, S. AU - Haugan, Timothy AU - Barnes, Paul N. T1 - Use of Ultrasonic Force Microscopy to Image the Interior Nanoparticles in YBa2Cu3O7-x Films. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2007/06/03/Jun2007 Part 3 of 3 Y1 - 2007/06/03/Jun2007 Part 3 of 3 VL - 17 IS - 2 M3 - Article SP - 3709 EP - 3712 SN - 10518223 AB - Nanoparticles present in the interior of YBa2Cu3O7-x (YBCO) films were successfully imaged for the first time by using an ultrasonic force microscope (UFM), which can also operate as a conventional atomic force microscope (AFM). Nanoparticles of Y2BaCuO5 and BaSnO3 were introduced into YBCO films using pulsed laser ablation to improve critical current density via enhanced flux pinning. The scanning speed and ultrasonic frequencies in the range of 300–500 kHz were optimized for each sample such that the nanometer sized particles on the surface as well as from the film interior can be imaged with good contrast and resolution. UFM and AFM scans taken of the same locations were compared to show the advantages of using UFM over AFM. We demonstrate that UFM can be used nondestructively to both characterize the interior nanoparticles introduced in YBCO films and provide high resolution images of the screw dislocation induced terraces present in the films. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYOMICROSCOPY KW - NANOPARTICLES KW - MAGNETIC films KW - LASER ablation KW - ELECTRIC currents KW - SUPERCONDUCTIVITY KW - SUPERCONDUCTORS -- Magnetic properties KW - CRITICAL currents KW - MAGNETIC flux N1 - Accession Number: 26294554; Source Information: Jun2007 Part 3 of 3, Vol. 17 Issue 2, p3709; Subject Term: CRYOMICROSCOPY; Subject Term: NANOPARTICLES; Subject Term: MAGNETIC films; Subject Term: LASER ablation; Subject Term: ELECTRIC currents; Subject Term: SUPERCONDUCTIVITY; Subject Term: SUPERCONDUCTORS -- Magnetic properties; Subject Term: CRITICAL currents; Subject Term: MAGNETIC flux; Subject Term: ; Number of Pages: 4p; ; Illustrations: 4 Diagrams, 1 Graph; ; Document Type: Article; L3 - 10.1109/TASC.2007.897920 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=26294554&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Barnes, Paul N. AU - Kell, Joseph W. AU - Harrison, Brandon C. AU - Haugan, Timothy J. AU - Burke, Jack L. AU - Varanasi, Chakrapani V. T1 - Nanoparticulate Flux Pinning Centers for YBa2Cu3O7-δ Films. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2007/06/03/Jun2007 Part 3 of 3 Y1 - 2007/06/03/Jun2007 Part 3 of 3 VL - 17 IS - 2 M3 - Article SP - 3717 EP - 3719 SN - 10518223 AB - YBa2Cu3O7-δ high temperature superconductors can maintain fairly high critical current densities (Jc) with increasing magnetic field. This in-field performance can be further improved upon by incorporating nanoparticulate magnetic flux pinning centers into the superconductors. This short paper briefly discusses and compares recent efforts by the U.S. Air Force Research Laboratory to incorporate insulating nanoparticles into the YBCO superconducting thin films by pulsed laser deposition. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUX pinning KW - HIGH temperature superconductors KW - MAGNETIC flux KW - NANOPARTICLES KW - MAGNETIC films KW - ELECTRIC currents KW - MAGNETIC fields KW - SUPERCONDUCTIVITY KW - PULSED laser deposition N1 - Accession Number: 26294556; Source Information: Jun2007 Part 3 of 3, Vol. 17 Issue 2, p3717; Subject Term: FLUX pinning; Subject Term: HIGH temperature superconductors; Subject Term: MAGNETIC flux; Subject Term: NANOPARTICLES; Subject Term: MAGNETIC films; Subject Term: ELECTRIC currents; Subject Term: MAGNETIC fields; Subject Term: SUPERCONDUCTIVITY; Subject Term: PULSED laser deposition; Subject Term: ; Number of Pages: 3p; ; Illustrations: 1 Chart, 2 Graphs; ; Document Type: Article; L3 - 10.1109/TASC.2007.899016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=26294556&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Haugan, Timothy J. AU - Barnes, Paul N. AU - Campbell, Timothy A. AU - Pierce, Neal A. AU - Baca, F. Javier AU - Maartense, Iman T1 - Flux Pinning of Y-Ba-Cu-O Films Doped With BaZrO3 Nanoparticles by Multilayer and Single Target Methods. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2007/06/03/Jun2007 Part 3 of 3 Y1 - 2007/06/03/Jun2007 Part 3 of 3 VL - 17 IS - 2 M3 - Article SP - 3724 EP - 3728 SN - 10518223 AB - The superconducting properties of YBa2Cu3O7-δ (YBCO or 123) thin films doped with BaZrO3 (BZO) nanopartides by multilayer and single-target methods were studied and compared. Thin films of 123 + BZO were processed by pulsed laser deposition on LaA1O3 and SrTiO3 single crystal substrates. Multilayer (BZO0.6 nm-1.4/12315nm)19 structures were grown by alternating deposition from 123 and BZO targets, and BZO additions of 0–2 Vol% were deposited using (1231-xBZOx) single-targets. The multilayer and single-target methods of BZO addition caused significant differences of superconducting transition temperatures (Tc) measured by AC susceptibility, and critical current densities (Jc) measured by both magnetic and transport methods as a function of temperature (T), applied magnetic field (H) and angle of H field incidence (θ). Single-target films had almost linear decrease of Tc and self-field Jc with BZO vol% addition, and compared to multilayer films had lower Jc (77 K, H < 4 T) however had improved high-field properties for Jc (77 K, H > 4 T). Multilayer films had almost no decrease of Tc and self-field Jc for high BZO additions up to 10 Vol% and very strong peak of Jc(H//ab in — plane) and constant and high Jc(H,0 < θ < 80°). Single-target BZO-2 Vol% films had slightly enhanced Jc (H//c — axis), consistent with results by other authors. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUX pinning KW - THIN films KW - MAGNETIC fields KW - NANOPARTICLES KW - MAGNETIC films KW - PULSED laser deposition KW - SUPERCONDUCTIVITY KW - ELECTRIC currents KW - SUPERCONDUCTORS KW - SEMICONDUCTOR doping N1 - Accession Number: 26294558; Source Information: Jun2007 Part 3 of 3, Vol. 17 Issue 2, p3724; Subject Term: FLUX pinning; Subject Term: THIN films; Subject Term: MAGNETIC fields; Subject Term: NANOPARTICLES; Subject Term: MAGNETIC films; Subject Term: PULSED laser deposition; Subject Term: SUPERCONDUCTIVITY; Subject Term: ELECTRIC currents; Subject Term: SUPERCONDUCTORS; Subject Term: SEMICONDUCTOR doping; Subject Term: ; Number of Pages: 5p; ; Illustrations: 1 Diagram, 4 Graphs; ; Document Type: Article; L3 - 10.1109/TASC.2007.899342 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=26294558&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Christ, John A. AU - Abriola, Linda M. T1 - Modeling metabolic reductive dechlorination in dense non-aqueous phase liquid source-zones JO - Advances in Water Resources JF - Advances in Water Resources Y1 - 2007/06// VL - 30 IS - 6/7 M3 - Article SP - 1547 EP - 1561 SN - 03091708 AB - Abstract: Recent laboratory experimental evidence has suggested that bioremediation may be an attractive management strategy for dense non-aqueous phase liquid (DNAPL) source-zones. In particular, metabolic reductive dechlorination has been shown to reduce aqueous phase chlorinated ethene contaminant concentrations and enhance DNAPL dissolution, reducing source longevity. Transitioning this technology from the laboratory to the field will be facilitated by tools capable of simulating bioenhanced dissolution. This work presents a mathematical model for metabolic reductive dechlorination in a macroscale two-phase (aqueous-organic) environment. The model is implemented through adaptation of an existing multi-phase compositional simulator, which has been modified to incorporate eight chemical components and four microbial populations: a fermentative population, two dechlorinating populations, and a competitor population (e.g., methanogens). Monod kinetics, modified to incorporate electron donor thresholds, electron acceptor competition, and competitor inhibition, are used to simulate microbial growth and component degradation. The developed model is numerically verified and demonstrated through comparisons with published column-scale dechlorination data. Dechlorination kinetics, electron donor concentrations, and DNAPL saturation and distribution are all found to affect the extent of dissolution enhancement, with enhancements ranging from 1.0 to ∼1.9. Comparison of simulation results with those from a simplified analytic modeling approach suggest that the analytical model may tend to over-predict dissolution enhancement and fail to account for the transient nature of dissolution enhancement, leading to significant (70%) under-prediction of source longevity. [Copyright &y& Elsevier] AB - Copyright of Advances in Water Resources is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Mirex KW - Microbial growth KW - POPULATION biology KW - Bioremediation KW - Microorganisms KW - Dechlorination KW - Enhanced dissolution KW - Modeling KW - NAPL KW - PCE N1 - Accession Number: 24787414; Christ, John A. 1; Abriola, Linda M. 2; Email Address: Linda.Abriola@tufts.edu; Affiliations: 1: Department of Civil and Environmental Engineering, US Air Force Academy, CO 80840, United States; 2: Department of Civil and Environmental Engineering, Tufts University, 200 College Avenue, 105 Anderson Hall, Medford, MA 02155, United States; Issue Info: Jun2007, Vol. 30 Issue 6/7, p1547; Thesaurus Term: Mirex; Thesaurus Term: Microbial growth; Thesaurus Term: POPULATION biology; Thesaurus Term: Bioremediation; Subject Term: Microorganisms; Author-Supplied Keyword: Dechlorination; Author-Supplied Keyword: Enhanced dissolution; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: NAPL; Author-Supplied Keyword: PCE; NAICS/Industry Codes: 562910 Remediation Services; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.advwatres.2006.05.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=24787414&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Schepp, David J. T1 - Beyond the Age of Innocence: Rebuilding Trust between America and the World. JO - Air Power History JF - Air Power History J1 - Air Power History PY - 2007///Summer2007 Y1 - 2007///Summer2007 VL - 54 IS - 2 M3 - Book Review SP - 60 EP - 60 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "Beyond the Age of Innocence: Rebuilding Trust Between America and the World," by Kishore Mahbubani. KW - BEYOND the Age of Innocence: Rebuilding Trust Between America & the World (Book) KW - MAHBUBANI, Kishore KW - UNITED States -- Foreign relations KW - NONFICTION N1 - Accession Number: 25296613; Source Information: Summer2007, Vol. 54 Issue 2, p60; Subject Term: BEYOND the Age of Innocence: Rebuilding Trust Between America & the World (Book); Subject Term: MAHBUBANI, Kishore; Subject Term: UNITED States -- Foreign relations; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 1/3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=25296613&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Bartz, Reed L. AU - Mossoni, Kory AU - Tyber, Jeffrey AU - Tokish, John AU - Gall, Kenneth AU - Siparsky, Patrick N. T1 - A Biomechanical Comparison of Initial Fixation Strength of 3 Different Methods of Anterior Cruciate Ligament Soft Tissue Graft Tibial Fixation. JO - American Journal of Sports Medicine JF - American Journal of Sports Medicine Y1 - 2007/06// VL - 35 IS - 6 M3 - Article SP - 949 EP - 954 SN - 03635465 AB - Background: Tibial fixation of soft tissue grafts continues to be problematic in the early postoperative period after anterior cruciate ligament reconstruction. Hypothesis: No differences exist for resistance to slippage of soft tissue grafts fixed with CentraLoc, Intrafix, or 35-mm bioabsorbable interference screws. Study Design: Controlled laboratory study. Methods: Bovine tibia and hoof extensor tendons were divided into 3 matched groups with 12 tibia and 12 extensor tendons in each group. Within each group, 6 specimens underwent monotonic loading to failure (1 mm/s), and 6 underwent cyclic loading (10 000 cycles, 125–325 N, 1 Hz). Results: No statistically significant differences were noted in mean load to failure or stiffness. The mean load to failure (and stiffness) for the 3 types of fixation were as follows: bioabsorbable interference screw, 631.6 ± 130.1 N (88.17 ± 6.79 N/mm); Intrafix, 644.3 ± 195.2 N (81.65 ± 16.5 N/mm); and CentraLoc, 791.1 ± 72.7 N (77.89 ± 7.07 N/mm). The slippage rates under cyclic loading for the 3 types of fixation were bioabsorbable interference screw, 0.336 ± 0.074 μm/cycle; Intrafix, 27.2 ± 31.6 μm/cycle; and CentraLoc, 0.0355 ± 0.0046 μm/cycle. In this model, CentraLoc proved statistically superior in resistance to cyclic loading compared with the bioabsorbable interference screw (P < .05) and Intrafix (P < .0001). The bioabsorbable interference screw proved statistically superior to Intrafix in resistance to cyclic loading (P < .05). Conclusions: In this bovine model, CentraLoc and bioabsorbable interference screws provided superior resistance to cyclic loading compared with Intrafix. Clinical Relevance: CentraLoc and bioabsorbable interference screws showed superior resistance to cyclic loading, which may indicate an increased resistance to clinical failure. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Sports Medicine is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRACTURE fixation KW - SOFT tissue injuries KW - ANTERIOR cruciate ligament KW - KNEE surgery KW - TENDONS KW - TRANSPLANTATION of organs, tissues, etc. KW - POSTOPERATIVE period KW - PLASTIC surgery KW - SURGICAL complications KW - anterior cruciate ligament KW - bioabsorbable KW - knee KW - tibial fixation N1 - Accession Number: 25298916; Bartz, Reed L. 1; Email Address: rbartz@nebraskaortho.com; Mossoni, Kory 2; Tyber, Jeffrey 3; Tokish, John 4; Gall, Kenneth 3; Siparsky, Patrick N. 2; Source Information: Jun2007, Vol. 35 Issue 6, p949; Subject: FRACTURE fixation; Subject: SOFT tissue injuries; Subject: ANTERIOR cruciate ligament; Subject: KNEE surgery; Subject: TENDONS; Subject: TRANSPLANTATION of organs, tissues, etc.; Subject: POSTOPERATIVE period; Subject: PLASTIC surgery; Subject: SURGICAL complications; Author-Supplied Keyword: anterior cruciate ligament; Author-Supplied Keyword: bioabsorbable; Author-Supplied Keyword: knee; Author-Supplied Keyword: tibial fixation; Number of Pages: 6p; Document Type: Article L3 - 10.1177/0363546507301881 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=25298916&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Gorla, Rama Subba Reddy AU - Byrd, Larry W. AU - Pratt, David M. T1 - Second law analysis for microscale flow and heat transfer JO - Applied Thermal Engineering JF - Applied Thermal Engineering Y1 - 2007/06// VL - 27 IS - 8/9 M3 - Article SP - 1414 EP - 1423 SN - 13594311 AB - Abstract: In phase change transport devices, capillary forces drive overall circulation of working fluid from an evaporator section to a condenser section, whereas the thin film flows at the evaporating meniscus are driven by capillary and disjoining pressure gradient. An analysis has been provided for the microscale fluid flow and heat transfer in an evaporating extended meniscus. Using the second law of thermodynamics, the entropy generated has been investigated. The geometric configuration that corresponds to the minimization of entropy generated and minimization of fluid flow resistance is identified. [Copyright &y& Elsevier] AB - Copyright of Applied Thermal Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT transfer KW - THERMODYNAMICS KW - ENTROPY KW - FLUID dynamics KW - Capillary devices KW - Exergy analysis KW - Scaling laws KW - Second law analysis N1 - Accession Number: 23869798; Gorla, Rama Subba Reddy 1; Email Address: r.gorla@csuohio.edu; Byrd, Larry W. 2; Pratt, David M. 2; Affiliations: 1: Department of Mechanical Engineering, Cleveland State University, 2121 Euclid Avenue, SH 232, Cleveland, OH 44115-2425, USA; 2: Thermal Structures Branch, Air Vehicles Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA; Issue Info: Jun2007, Vol. 27 Issue 8/9, p1414; Subject Term: HEAT transfer; Subject Term: THERMODYNAMICS; Subject Term: ENTROPY; Subject Term: FLUID dynamics; Author-Supplied Keyword: Capillary devices; Author-Supplied Keyword: Exergy analysis; Author-Supplied Keyword: Scaling laws; Author-Supplied Keyword: Second law analysis; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.applthermaleng.2006.10.027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=23869798&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Koppisetty, K. AU - Kirkici, H. AU - Schweickart, D.L. T1 - Partial Vacuum Breakdown Characteristics of Helium at 20 kHz for Inhomogeneous Field Gap. JO - IEEE Transactions on Dielectrics & Electrical Insulation JF - IEEE Transactions on Dielectrics & Electrical Insulation J1 - IEEE Transactions on Dielectrics & Electrical Insulation PY - 2007/06// Y1 - 2007/06// VL - 14 IS - 3 M3 - Article SP - 553 EP - 559 SN - 10709878 AB - In general, power devices and systems operating in vacuum or space environment are more susceptible to partial discharges, corona, or volume discharges due to the partial vacuum conditions. Additionally, high frequency operation of a power system is a contributing factor in lowering the breakdown voltage of insulation. In this paper we present our studies on the breakdown characteristics of helium operating in dc and 20 kHz ac field in partial vacuum, for a point-to-point and point-to-plane electrode configurations. Breakdown voltage as a function of pressure in the range of 27 to 400 Pa (0.2 to 3 torr) for both the dc and 20 kHz ac cases is presented. Voltage and current waveforms along with the optical emission waveform of the breakdown events are also presented. A variable dc power supply for dc and an in-house built variable dc-offset-ac power supply for the high frequency breakdown experiments are used. A high voltage probe and a Pearson current sensor are used for the voltage and current detection, and a photo-multiplier-tube with a digital pico-ammeter and a video camera are used for the optical signal detection of this set-up. The breakdown voltage as a function of pressure for both the ac and dc experiments, along with voltage breakdown waveforms for both electrodes are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Dielectrics & Electrical Insulation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HELIUM KW - ELECTRIC discharges KW - VACUUM KW - SPACE environment KW - PULSED power systems N1 - Accession Number: 25501705; Source Information: Jun2007, Vol. 14 Issue 3, p553; Subject Term: HELIUM; Subject Term: ELECTRIC discharges; Subject Term: VACUUM; Subject Term: SPACE environment; Subject Term: PULSED power systems; Subject Term: ; Number of Pages: 7p; ; Illustrations: 3 Diagrams, 6 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=25501705&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Pozhar, Liudmila A. AU - Mitchel, William C. T1 - Collectivization of Electronic Spin Distributions and Magneto-Electronic Properties of Atomic Clusters of Ga and In with As, V, and Mn. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics J1 - IEEE Transactions on Magnetics PY - 2007/06// Y1 - 2007/06// VL - 43 IS - 6 M3 - Article SP - 3037 EP - 3039 SN - 00189464 AB - Exponential increase in nano- and sub-nanoscale research has involved investigations of the microscopic nature and origin of magnetism, including a search for the smallest atomic clusters that possess collectivized electronic spin density distributions. In this work the Hartree-Fock (HF) and restricted open-shell HF (ROHF) methods have been used to synthesize virtually (i.e., fundamental theory-based, computationally) a set of small pyramidal clusters of Ga or In atoms with As, V, and Mn atoms. The majority of the clusters are not destabilized by inclusion of vanadium or manganese atoms. The cluster charge and spin density distributions are collectivized. The In-based clusters with V or Mn atoms possess relatively large spin density values that may be of interest for spintronic materials development. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM (Metal) KW - MAGNETISM KW - MICROCLUSTERS KW - ARSENIC KW - TRANSITION metals N1 - Accession Number: 25328807; Source Information: Jun2007, Vol. 43 Issue 6, p3037; Subject Term: GALLIUM (Metal); Subject Term: MAGNETISM; Subject Term: MICROCLUSTERS; Subject Term: ARSENIC; Subject Term: TRANSITION metals; Subject Term: ; Number of Pages: 3p; ; Illustrations: 6 Diagrams, 2 Charts; ; Document Type: Article; L3 - 10.1109/TMAG.2007.893693 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=25328807&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Roelke, George R. AU - Baldwin, Rusty O. AU - Mullins, Barry E. AU - Kim, Yong C. T1 - A Cache Architecture for Extremely Unreliable Nanotechnologies. JO - IEEE Transactions on Reliability JF - IEEE Transactions on Reliability Y1 - 2007/06// VL - 56 IS - 2 M3 - Article SP - 182 EP - 197 SN - 00189529 AB - In the drive to create ever smaller transistors, conventional silicon CMOS devices are becoming more difficult to fabricate reliably as process size shrinks. New technologies are being investigated to replace silicon CMOS. While offering greater numbers of devices per unit area, all of these technologies are more difficult to fabricate, and more likely to fail in operation than current technologies. Nanotechnology research has identified the need for fault and defect tolerance at the architectural level so that future devices can be used in large-scale electronics circuits. This paper examines the problem of creating reliable caches using extremely unreliable technologies. We incorporate support logic (i.e., control, datapath, and self-test logic) into the analysis, and propose a novel Content Addressable Memory-based design incorporating "best practice" fault tolerant design techniques. The design requires 15 times the number of devices of a conventional design, but enables the use of device technologies with defect rates higher than 10-6, a three order of magnitude improvement over non-fault tolerant designs. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Reliability is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOTECHNOLOGY KW - HIGH technology KW - COMPLEMENTARY metal oxide semiconductors KW - TRANSISTORS KW - SILICON KW - Computer architecture KW - defect tolerance KW - error correcting codes KW - fault tolerance KW - memory KW - nanotechnology N1 - Accession Number: 25452707; Roelke, George R. 1; Email Address: george.roelke@wpafb.af.mil; Baldwin, Rusty O. 2; Email Address: rusty.baldwin@afit.edu; Mullins, Barry E. 2; Email Address: barry.mullins@afit.edu; Kim, Yong C. 2; Email Address: yong.kim@afit.edu; Affiliations: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA; 2: Air Force Institute of Technology, Wright-Patterson AFB, OH 45433 USA; Issue Info: Jun2007, Vol. 56 Issue 2, p182; Thesaurus Term: NANOTECHNOLOGY; Thesaurus Term: HIGH technology; Subject Term: COMPLEMENTARY metal oxide semiconductors; Subject Term: TRANSISTORS; Subject Term: SILICON; Author-Supplied Keyword: Computer architecture; Author-Supplied Keyword: defect tolerance; Author-Supplied Keyword: error correcting codes; Author-Supplied Keyword: fault tolerance; Author-Supplied Keyword: memory; Author-Supplied Keyword: nanotechnology; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 16p; Illustrations: 4 Diagrams, 7 Charts, 12 Graphs; Document Type: Article L3 - 10.1 1O9ITR.2007.895309 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=25452707&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - AU - Wang, Eric T.G.1, ewang@mgt.ncu.edu.tw AU - Chia-Lin Lin, Cathy1, cathy@mgt.ncu.edu.tw AU - Jiang, James J.2, jjiang@bus.ucf.edu AU - Klein, Gary3, gary.klein@usafa.af.mil T1 - Improving enterprise resource planning (ERP) fit to organizational process through knowledge transfer. JO - International Journal of Information Management JF - International Journal of Information Management J1 - International Journal of Information Management PY - 2007/06// Y1 - 2007/06// VL - 27 IS - 3 CP - 3 M3 - Article SP - 200 EP - 212 SN - 02684012 AB - Abstract: Critical to enterprise resource planning (ERP) implementation is the fit between the system and the processes in an organization. Knowledge about the ERP system must flow from those implementing the system and those responsible once in production. Effective knowledge transfer is assisted by the absorptive capacity of the learner and the competence of the knowledge holder, as reflected in the client and consultant relationship of this study. A model of transfer is composed from existing theories of learning to explain the roles played by the client through absorptive capacity and the consultant through competence. Survey data of CIOs in Taiwan confirm that transfer is improved with higher levels of capacity and competence, while the transfer process leads to a better fit between ERP systems and organizational processes. Management needs to foster the build-up of their internal knowledge stocks in order to stimulate the flow of knowledge transfer. [Copyright &y& Elsevier] KW - Knowledge management KW - Enterprise resource planning KW - Organizational behavior KW - Organizational learning KW - Absorptive capacity KW - Consultant competence KW - ERP implementation KW - Knowledge transfer KW - Process fit N1 - Accession Number: 24867094; Authors: Wang, Eric T.G. 1 Email Address: ewang@mgt.ncu.edu.tw; Chia-Lin Lin, Cathy 1 Email Address: cathy@mgt.ncu.edu.tw; Jiang, James J. 2 Email Address: jjiang@bus.ucf.edu; Klein, Gary 3 Email Address: gary.klein@usafa.af.mil; Affiliations: 1: Department of Information Management, National Central University, Taiwan, ROC; 2: Department of Management Information Systems, University of Central Florida, Orlando, FL 32816-1400, USA; 3: Department of Management, United States Air Force Academy, 2354 Fairchild Dr. Suite 6H-130, USAF Academy, CO 80840-5099, USA; Subject: Knowledge management; Subject: Enterprise resource planning; Subject: Organizational behavior; Subject: Organizational learning; Author-Supplied Keyword: Absorptive capacity; Author-Supplied Keyword: Consultant competence; Author-Supplied Keyword: ERP implementation; Author-Supplied Keyword: Knowledge transfer; Author-Supplied Keyword: Process fit; Number of Pages: 13p; Record Type: Article L3 - 10.1016/j.ijinfomgt.2007.02.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=24867094&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - Hundhausen, R. Jason AU - Adams, Douglas E. AU - Derriso, Mark T1 - Impact Loads Identification in Standoff Metallic Thermal Protection System Panels. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2007/06// VL - 18 IS - 6 M3 - Article SP - 531 EP - 541 SN - 1045389X AB - This article describes two experimental approaches for the identification of transient impact loads applied to a metallic composite thermal protection system (TPS) panel. The critical nature of the TPS to the survival of the vehicle and crew warrants the development of a technique that can detect, quantify, and locate transient impact loads. This information will provide an opportunity to identify specific panels that are more or less prone to damage from transient impacts. Furthermore, a historical database of impact loads encountered can be retained for use in the development of statistical models that relate impact loading to panel life. The two techniques presented herein are a physics-based approach, where the panel is assumed to behave as a rigid body at low frequencies, and an inverse frequency response approach, where the system impedance matrix is measured, from which the loads acting on the panel can be estimated using the measured response. The validity of approaches is verified experimentally, and it is shown that the inverse frequency response method is capable of detecting, locating, and quantifying transient impact loads to a high degree of accuracy. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC composites KW - IMPACT loads (Engineering) KW - INVERSION (Geophysics) KW - COMPOSITE materials KW - MODAL analysis KW - impact loads KW - inverse problem KW - loads identification KW - thermal protection system N1 - Accession Number: 25424050; Hundhausen, R. Jason 1; Email Address: hundhausen@lanl.gov; Adams, Douglas E. 2; Derriso, Mark 3; Affiliations: 1: Los Alamos National Laboratory, Engineering Sciences & Applications Weapon Response Group. MS TOO!, Los Alamos, NM 87545, USA; 2: Purdue University, School of Mechanical Engineering, Ray W. Herrick Laboratories 140 S. Intramural Drive, West Lafayette, IN 47907-2031, USA; 3: US Air Force Research Laboratory, Air Vehicles Directorate, Structures Division 2790 D. Street, WPAFB, OH 45433, USA; Issue Info: Jun2007, Vol. 18 Issue 6, p531; Subject Term: METALLIC composites; Subject Term: IMPACT loads (Engineering); Subject Term: INVERSION (Geophysics); Subject Term: COMPOSITE materials; Subject Term: MODAL analysis; Author-Supplied Keyword: impact loads; Author-Supplied Keyword: inverse problem; Author-Supplied Keyword: loads identification; Author-Supplied Keyword: thermal protection system; Number of Pages: 11p; Illustrations: 6 Diagrams, 2 Charts, 6 Graphs; Document Type: Article L3 - 10.1177/1045389X06067141 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=25424050&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Cook, Martin L. T1 - Michael Walzer's Concept of 'Supreme Emergency'. JO - Journal of Military Ethics JF - Journal of Military Ethics J1 - Journal of Military Ethics PY - 2007/06// Y1 - 2007/06// VL - 6 IS - 2 M3 - Article SP - 138 EP - 151 PB - Routledge SN - 15027570 AB - This paper critically examines Michael Walzer's famous efforts to integrate a 'supreme emergency' exemption into the ordinary restraints of jus in bello. The author argues that, while Walzer raises valid points about the felt responsibilities of leaders of political communities under extreme pressure, it is a mistake philosophically and prudentially to think of supreme emergency as granting moral permission to violate the jus in bello rules. Instead, the author argues, any violations of ordinary restraints should remain violations. However, by analogy, with exoneration from penalty for violations of criminal law in extreme circumstances, one might imagine political leaders' decisions to violate just war restraints to be (in very rare and extreme circumstances) forgivable but not permissible in advance. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Military Ethics is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WALZER, Michael KW - WAR (Philosophy) KW - JUST war doctrine KW - LEADERS KW - CRIMINAL law N1 - Accession Number: 25729095; Source Information: Jun2007, Vol. 6 Issue 2, p138; Subject Term: WALZER, Michael; Subject Term: WAR (Philosophy); Subject Term: JUST war doctrine; Subject Term: LEADERS; Subject Term: CRIMINAL law; Subject Term: ; Number of Pages: 14p; ; Document Type: Article; L3 - 10.1080/15027570701381948 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=25729095&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Merriman, Joel W. AU - Boal, Clint W. AU - Bashore, Terry L. AU - Zwank, Phillip J. AU - Wester, David B. T1 - Abundance of Diurnal Raptors in Relation to Prairie Dog Colonies: Implications for Bird--Aircraft Strike Hazard. JO - Journal of Wildlife Management JF - Journal of Wildlife Management Y1 - 2007/06// VL - 71 IS - 3 M3 - Article SP - 811 EP - 815 PB - Wiley-Blackwell SN - 0022541X AB - Some diurnal raptors are frequently observed at prairie dog (Cynomys sp.) colonies. As a result, some military installations have conducted prairie dog control activities to reduce the bird-aircraft strike hazard (BASH) potential of low-flying aircraft. To evaluate the validity of this management strategy, we assessed raptor associations with prairie dog colonies at 2 short-grass prairie study areas: southern Lubbock County, Texas, USA, and Melrose Bombing and Gunnery Range in east-central New Mexico, USA. We quantified diurnal raptors (i.e., Falconiformes) at plots occupied (colony plots) and unoccupied (noncolony plots) by black-tailed prairie dogs (Cynomys ludovicianus) at both sites throughout 2002. We compared the number of individual birds of a given species at colony and noncolony plots within each study area by season. Ferruginous hawks (Buteo regalis) and northern harriers (Circus cyaneus) were more abundant at colony plots, whereas Swainson's hawks (B. swainsoni) and American kestrels (Falco sparverius) were more abundant at noncolony plots. Red-tailed hawk (B. jamaicensis) abundance did not differ between the 2 plot types. Our results suggest prairie dog control as a method of reducing BASH potential may be effective at some sites but may be ineffective or even increase the BASH potential at others. Thus, bird-avoidance models assessing the BASH potential should be conducted on a site-specific basis using information on relative and seasonal abundances of individual raptor species and the relative strike risks they pose to aircraft. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Wildlife Management is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Birds of prey KW - Prairie dogs KW - Wildlife management KW - Animals -- Population biology KW - Texas KW - New Mexico KW - bird-aircraft strike hazard KW - black-tailed prairie dog KW - Cynomys ludovicianus KW - Falconiformes KW - hawk KW - raptor N1 - Accession Number: 28810733; Merriman, Joel W. 1; Boal, Clint W. 2; Email Address: clint.boal@ttu.edu; Bashore, Terry L. 3; Zwank, Phillip J. 1; Wester, David B. 1; Affiliations: 1: Department of Range, Wildlife, and Fisheries Management, Texas Tech University, Lubbock, TX 79409-2125, USA; 2: United States Geological Survey Texas Cooperative Fish and Wildlife Research Unit, Department of Range, Wildlife, and Fisheries Management, Texas Tech University, Lubbock, TX 79409-2120, USA; 3: United States Air Force, Ranges, Airfields, and Airspace Operations Requirements Division, HQ ACC/DORP, 205 Dodd Boulevard, Suite 101, Langley Air Force Base, VA 23665-2789, USA; Issue Info: Jun2007, Vol. 71 Issue 3, p811; Thesaurus Term: Birds of prey; Thesaurus Term: Prairie dogs; Thesaurus Term: Wildlife management; Thesaurus Term: Animals -- Population biology; Subject: Texas; Subject: New Mexico; Author-Supplied Keyword: bird-aircraft strike hazard; Author-Supplied Keyword: black-tailed prairie dog; Author-Supplied Keyword: Cynomys ludovicianus; Author-Supplied Keyword: Falconiformes; Author-Supplied Keyword: hawk; Author-Supplied Keyword: raptor; Number of Pages: 5p; Document Type: Article L3 - 10.2193/2006-373 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=28810733&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Yerrick, Nathan P. AU - Yavuz, Mesut AU - Jeffcoat, David E. T1 - Two Sensor Motion Models for the Dynamic Sensor Coverage Problem. JO - Military Operations Research JF - Military Operations Research J1 - Military Operations Research PY - 2007/06// Y1 - 2007/06// VL - 12 IS - 2 M3 - Article SP - 55 EP - 64 SN - 10825983 AB - The article reports on the study of two sensor motion models that may help solve the dynamic sensor coverage problem. It discusses the importance of sensor allocation summarized as intelligence, surveillance and reconnaissance. The two models, Sensor Motion Independently and Identically Distributed (IID) and the Markov Chain model have their own advantages. IID uses fewer calculations, but is unable to solve some problems, which may be solved by the lengthy but flexible Markov chain. KW - DETECTORS KW - MILITARY surveillance KW - MARKOV processes KW - SENSOR networks KW - DETECTION alarms KW - MATHEMATICAL models KW - RECONNAISSANCE operations N1 - Accession Number: 26018786; Source Information: 2007, Vol. 12 Issue 2, p55; Subject Term: DETECTORS; Subject Term: MILITARY surveillance; Subject Term: MARKOV processes; Subject Term: SENSOR networks; Subject Term: DETECTION alarms; Subject Term: MATHEMATICAL models; Subject Term: RECONNAISSANCE operations; Subject Term: ; Number of Pages: 10p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=26018786&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Cook, Martin L. T1 - TheMorality ofWar. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College J1 - Parameters: U.S. Army War College PY - 2007///Summer2007 Y1 - 2007///Summer2007 VL - 37 IS - 2 M3 - Book Review SP - 110 EP - 111 SN - 00311723 AB - The article reviews the book "The Morality of War," by Brian Orend. KW - MORALITY of War, The (Book) KW - OREND, Brian KW - WAR KW - NONFICTION N1 - Accession Number: 25495048; Source Information: Summer2007, Vol. 37 Issue 2, p110; Subject Term: MORALITY of War, The (Book); Subject Term: OREND, Brian; Subject Term: WAR; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=25495048&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2008-10320-001 AN - 2008-10320-001 AU - Rode, Joseph C. AU - Rehg, Michael T. AU - Near, Janet P. AU - Underhill, John R. T1 - The effect of work/family conflict on intention to quit: The mediating roles of job and life satisfaction. JF - Applied Research in Quality of Life JO - Applied Research in Quality of Life JA - Appl Res Qual Life Y1 - 2007/06// VL - 2 IS - 2 SP - 65 EP - 82 CY - Germany PB - Springer SN - 1871-2584 SN - 1871-2576 AD - Rode, Joseph C., Richard T. Farmer School of Business, Miami University, Oxford, OH, US, 45056 N1 - Accession Number: 2008-10320-001. Partial author list: First Author & Affiliation: Rode, Joseph C.; Richard T. Farmer School of Business, Miami University, Oxford, OH, US. Release Date: 20090525. Correction Date: 20160414. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Conference Information: Bi-Annual Conference of the International Society for the Study of Work and Organizational Values (ISSWOV), 9th. Conference Note: Portions of this paper were presented at the aforementioned conference. Major Descriptor: Employee Turnover; Family Work Relationship; Job Satisfaction; Life Satisfaction; Role Conflicts. Classification: Personnel Attitudes & Job Satisfaction (3650). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Work Interference with Family Scale [Appended]; Intent to Quit Scale [Appended]; Job Satisfaction Scale; Family Interference With Work Scale [Appended] DOI: 10.1037/t09835-000; Life Satisfaction Scale. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 18. Issue Publication Date: Jun, 2007. AB - Research has shown consistently that job satisfaction predicts turnover, but much less attention has been given to the how relationships between work and non work or how overall subjective evaluations of life (i.e., life satisfaction) affects turnover. We tested a model that included job satisfaction, life satisfaction, and conflict between work and non work domains of life as predictors of intent to quit. Results from a sample of Air Force personnel revealed that life satisfaction was a significant predictor of intent to quit after controlling for job satisfaction, and that both job and life satisfaction mediated the effects of role conflict between work and non work on intent to quit. We consider implications of these findings for both theory and practice. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - work family conflict KW - quitting intentions KW - mediating roles KW - job satisfaction KW - life satisfaction KW - 2007 KW - Employee Turnover KW - Family Work Relationship KW - Job Satisfaction KW - Life Satisfaction KW - Role Conflicts KW - 2007 DO - 10.1007/s11482-007-9030-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-10320-001&site=ehost-live&scope=site UR - john.underhill@wpafb.af.mil UR - near@indiana.edu UR - Michael.Rehg@afit.edu UR - rodejc@muohio.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-08106-004 AN - 2007-08106-004 AU - Kronauer, Richard E. AU - Gunzelmann, Glenn AU - Van Dongen, Hans P. A. AU - Doyle, Francis J. III AU - Klerman, Elizabeth B. T1 - Uncovering physiologic mechanisms of circadian rhythms and sleep/wake regulation through mathematical modeling. JF - Journal of Biological Rhythms JO - Journal of Biological Rhythms JA - J Biol Rhythms Y1 - 2007/06// VL - 22 IS - 3 SP - 233 EP - 245 CY - US PB - Sage Publications SN - 0748-7304 SN - 1552-4531 AD - Klerman, Elizabeth B., Division of Sleep Medicine, Brigham and Women's Hospital, 221 Longwood Avenue, Boston, MA, US, 02115 N1 - Accession Number: 2007-08106-004. PMID: 17517913 Partial author list: First Author & Affiliation: Kronauer, Richard E.; Division of Sleep Medicine, Brigham and Women's Hospital, Boston, MA, US. Release Date: 20070813. Correction Date: 20111107. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Kronauer, Richard E. Major Descriptor: Human Biological Rhythms; Mathematical Modeling; Sleep Wake Cycle; Work Rest Cycles. Classification: Electrophysiology (2530). Population: Human (10). References Available: Y. Page Count: 13. Issue Publication Date: Jun, 2007. AB - Mathematical models of neurobehavioral function are useful both for understanding the underlying physiology and for predicting the effects of rest-activity-work schedules and interventions on neurobehavioral function. In a symposium titled 'Modeling Human Neurobehavioral Performance I: Uncovering Physiologic Mechanisms' at the 2006 Society for Industrial and Applied Mathematics/Society for Mathematical Biology (SIAM/SMB) Conference on the Life Sciences, different approaches to modeling the physiology of human circadian rhythms, sleep, and neurobehavioral performance and their usefulness in understanding the underlying physiology were examined. The topics included key elements of the physiology that should be included in mathematical models, a computational model developed within a cognitive architecture that has begun to include the effects of extended wake on information-processing mechanisms that influence neurobehavioral function, how to deal with interindividual differences in the prediction of neurobehavioral function, the applications of systems biology and control theory to the study of circadian rhythms, and comparisons of these methods in approaching the overarching questions of the underlying physiology and mathematical models of circadian rhythms and neurobehavioral function. A unifying theme was that it is important to have strong collaborative ties between experimental investigators and mathematical modelers, both for the design and conduct of experiments and for continued development of the models. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - mathematical models KW - neurobehavioral functions KW - rest-activity-work schedules KW - sleep-wake cycle KW - 2007 KW - Human Biological Rhythms KW - Mathematical Modeling KW - Sleep Wake Cycle KW - Work Rest Cycles KW - 2007 U1 - Sponsor: Air Force Office of Scientific Research (AFOSR). Recipients: No recipient indicated U1 - Sponsor: National Institutes of Health, US. Grant: K02-HD045459. Recipients: Kronauer, Richard E.; Klerman, Elizabeth B. U1 - Sponsor: Air Force Office of Scientific Research (AFOSR). Grant: FA9550-06-0080. Recipients: Kronauer, Richard E.; Klerman, Elizabeth B. U1 - Sponsor: National Space Biomedical Research Institute. Grant: HPF00405. Recipients: Kronauer, Richard E.; Klerman, Elizabeth B. U1 - Sponsor: Air Force Research Laboratory (AFRL), Warfighter Readiness Research Division. Recipients: Gunzelmann, Glenn U1 - Sponsor: Air Force Office of Scientific Research (AFOSR). Grant: 04HE02COR. Recipients: Gunzelmann, Glenn U1 - Sponsor: Air Force Office of Scientific Research (AFOSR). Grant: FA9550-05-1-0086. Recipients: Van Dongen, Hans P. A. U1 - Sponsor: US Army Medical Research and Materiel Command (USAMRMC), US. Grant: W81XWH-04-1-0923. Recipients: Van Dongen, Hans P. A. U1 - Sponsor: Institute for Collaborative Biotechnologies. Grant: DAAD19-03-D-0004. Other Details: Supported through US Army Research Office. Recipients: Doyle, Francis J. III U1 - Sponsor: National Institutes of Health, US. Grant: GM078993. Recipients: Doyle, Francis J. III DO - 10.1177/0748730407301237 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-08106-004&site=ehost-live&scope=site UR - ebklerman@hms.harvard.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Lyons, K. M. AU - Watson, K. A. AU - Carter, C. D. AU - Donbar, J. M. T1 - UPSTREAM ISLANDS OF FLAME IN LIFTED-JET PARTIALLY PREMIXED COMBUSTION. JO - Combustion Science & Technology JF - Combustion Science & Technology Y1 - 2007/05// VL - 179 IS - 5 M3 - Article SP - 1029 EP - 1037 SN - 00102202 AB - Contemporary interest exists in understanding the roles of leading edge flow deflection, secondary jet instabilities and islands of ignited gases in permitting lifted flames to stabilize. To assess these issues, elements of the leading-edge of a lifted turbulent jet flame have been investigated using laser-imaging techniques. Images of flame position, morphology and dynamics are presented primarily from CH planar laser-induced fluorescence (CH-PLIF) measurements. In particular, evidence of flame islands, or flame fragments, upstream of the bulk-flame leading edge are reported and discussed. This evidence is presented in the form of sequential CH-PLIF images and well as CH-PLIF/Rayleigh scattering images. Images showing thermal characteristics of the regions surrounding the edge flame are also described. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Combustion KW - Flame KW - Turbulence KW - Lasers KW - Rayleigh scattering KW - Edge flames KW - Flame stabilization KW - Ignition KW - Jet flames N1 - Accession Number: 24515624; Lyons, K. M. 1; Email Address: lyons@eos.ncsu.edu; Watson, K. A. 2; Carter, C. D. 3; Donbar, J. M. 3; Affiliations: 1: Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, North Carolina, USA; 2: Department of Mechanical Engineering, University of the Pacific, Stockton, California, USA; 3: Air Force Research Laboratory, AFRL/PRA Wright-Patterson Air Force Base, Ohio, USA; Issue Info: May2007, Vol. 179 Issue 5, p1029; Thesaurus Term: Combustion; Subject Term: Flame; Subject Term: Turbulence; Subject Term: Lasers; Subject Term: Rayleigh scattering; Author-Supplied Keyword: Edge flames; Author-Supplied Keyword: Flame stabilization; Author-Supplied Keyword: Ignition; Author-Supplied Keyword: Jet flames; Number of Pages: 9p; Illustrations: 4 Diagrams; Document Type: Article L3 - 10.1080/00102200600910858 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=24515624&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Jingshu Huang AU - Bue, Brian AU - Pattath, Avin AU - Ebert, David S. AU - Thomas, Krystal M. T1 - Interactive Illustrative Rendering on Mobile Devices. JO - IEEE Computer Graphics & Applications JF - IEEE Computer Graphics & Applications J1 - IEEE Computer Graphics & Applications PY - 2007/05//May/Jun2007 Y1 - 2007/05//May/Jun2007 VL - 27 IS - 3 M3 - Article SP - 48 EP - 56 SN - 02721716 AB - The article presents information on the use of remote visualization techniques to address mobile service hardware issues including low screen resolution, limited input interfaces, and battery life. The authors inform that the remote visualization approach employs a client-server model and is used for displaying complex three dimensional (3D) surface models and volumetric data on mobile platforms such as cellular telephones. Mobile devices programmability and usability have enhanced with the improvements in processors, graphics chips, displays, power management, and wireless technology. With the help of OpenGL ES, the first standardized 3D programming interface for mobile devices, direct 3D rendering at interactive rates is possible. KW - MOBILE communication systems KW - THREE-dimensional imaging KW - CELL phones KW - VISUAL perception KW - WIRELESS communication systems KW - CLIENT/SERVER computing KW - DIGITAL image processing KW - DIGITAL images KW - IMAGING systems N1 - Accession Number: 25028448; Source Information: May/Jun2007, Vol. 27 Issue 3, p48; Subject Term: MOBILE communication systems; Subject Term: THREE-dimensional imaging; Subject Term: CELL phones; Subject Term: VISUAL perception; Subject Term: WIRELESS communication systems; Subject Term: CLIENT/SERVER computing; Subject Term: DIGITAL image processing; Subject Term: DIGITAL images; Subject Term: IMAGING systems; Subject Term: ; Number of Pages: 9p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=25028448&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kandangath, Anil AU - Krishnamoorthy, Satish AU - Ying-Cheng Lai AU - Gaudet, John A. T1 - Inducing Chaos in Electronic Circuits by Resonant Perturbations. JO - IEEE Transactions on Circuits & Systems. Part I: Regular Papers JF - IEEE Transactions on Circuits & Systems. Part I: Regular Papers J1 - IEEE Transactions on Circuits & Systems. Part I: Regular Papers PY - 2007/05// Y1 - 2007/05// VL - 54 IS - 5 M3 - Article SP - 1109 EP - 1119 SN - 15498328 AB - We propose a scheme to induce chaotic attractors in electronic circuits. The applications that we are interested in stipulate the following three constraints: 1) the circuit operates in a stable periodic regime far away from chaotic behavior; 2) no parameters or state variables of the circuit are directly accessible to adjustment and 3) the circuit equations are unknown and the only available information is a time series (or a signal) measured from the circuit. Under these conditions, a viable approach to chaos induction is to use external excitations such as a microwave signal, assuming that a proper coupling mechanism exists which allows the circuit to be perturbed by the excitation. The question we address in this paper is how to choose the waveform of the excitation to ensure that sustained chaos (chaotic attractor) can be generated in the circuit. We show that weak resonant perturbations with time-varying frequency and phase are generally able to drive the circuit into a hierarchy of nonlinear resonant states and eventually into chaos. We develop a theory to explain this phenomenon, provide numerical support, and demonstrate the feasibility of the method by laboratory experiments. In particular, our experimental system consists of a Duffing-type of nonlinear electronic oscillator driven by a phase-locked loop (PLL) circuit. The PLL can track the frequency and phase evolution of the target Duffing circuit and deliver resonant perturbations to generate robust chaotic attractors. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Circuits & Systems. Part I: Regular Papers is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHASE-locked loops KW - ELECTRONIC circuit design KW - ELECTRONIC systems KW - ELECTRIC circuits KW - ELECTRIC apparatus & appliances KW - ELECTRIC oscillators KW - DEMODULATION (Electronics) KW - INTERFACE circuits KW - LOGIC design N1 - Accession Number: 27032654; Source Information: May2007, Vol. 54 Issue 5, p1109; Subject Term: PHASE-locked loops; Subject Term: ELECTRONIC circuit design; Subject Term: ELECTRONIC systems; Subject Term: ELECTRIC circuits; Subject Term: ELECTRIC apparatus & appliances; Subject Term: ELECTRIC oscillators; Subject Term: DEMODULATION (Electronics); Subject Term: INTERFACE circuits; Subject Term: LOGIC design; Subject Term: ; Number of Pages: 11p; ; Document Type: Article; L3 - 10.1109/TCSI.2007.893510 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=27032654&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Smith, Austin L. AU - Kunz, Donald L. T1 - Dynamic Coupling of the KC-135 Tanker and Boom for Modeling and Simulation. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2007/05//May/Jun2007 Y1 - 2007/05//May/Jun2007 VL - 44 IS - 3 M3 - Article SP - 1034 EP - 1034 SN - 00218669 AB - The article addresses the tanker-boom interactions and how to model them for simulation purposes. The researchers will develop a new integrated analytical model that incorporates aircraft motion effects into the boom equations of motion and aerodynamics. It mentions that the KC-135 aerial refueling boom was attached to the aircraft at the boom root by a vertical pin and a yoke-and-trunnion assembly. KW - AERODYNAMICS KW - FLIGHT simulators KW - KC-135 (Tanker aircraft) KW - AERONAUTICS KW - MILITARY jets N1 - Accession Number: 25563677; Source Information: May/Jun2007, Vol. 44 Issue 3, p1034; Subject Term: AERODYNAMICS; Subject Term: FLIGHT simulators; Subject Term: KC-135 (Tanker aircraft); Subject Term: AERONAUTICS; Subject Term: MILITARY jets; Subject Term: ; Number of Pages: 1p; ; Document Type: Article; L3 - 10.2514/1.27241 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=25563677&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 106112369 T1 - Current understanding and management of hidradenitis suppurativa. AU - Krbec AC Y1 - 2007/05// N1 - Accession Number: 106112369. Language: English. Entry Date: 20070629. Revision Date: 20150819. Publication Type: Journal Article; pictorial; tables/charts. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. Special Interest: Advanced Nursing Practice. NLM UID: 8916634. KW - Hidradenitis Suppurativa -- Therapy KW - Antibiotics -- Administration and Dosage KW - Diagnosis, Differential KW - Drainage KW - Hidradenitis Suppurativa -- Classification KW - Hidradenitis Suppurativa -- Complications KW - Hidradenitis Suppurativa -- Diagnosis KW - Hidradenitis Suppurativa -- Drug Therapy KW - Hidradenitis Suppurativa -- Epidemiology KW - Hidradenitis Suppurativa -- Etiology KW - Hidradenitis Suppurativa -- Physiopathology KW - Hidradenitis Suppurativa -- Prognosis KW - Hidradenitis Suppurativa -- Symptoms KW - Patient Education KW - Retinoids -- Administration and Dosage SP - 228 EP - 234 JO - Journal of the American Academy of Nurse Practitioners JF - Journal of the American Academy of Nurse Practitioners JA - J AM ACAD NURSE PRACT VL - 19 IS - 5 CY - Malden, Massachusetts PB - Wiley-Blackwell SN - 1041-2972 AD - United States Air Force Academy, Colorado Springs, Colorado, USA. U2 - PMID: 17489955. DO - 10.1111/j.1745-7599.2007.00219.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106112369&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Krbec, Amanda C. T1 - Current understanding and management of hidradenitis suppurativa. JO - Journal of the American Academy of Nurse Practitioners JF - Journal of the American Academy of Nurse Practitioners Y1 - 2007/05// VL - 19 IS - 5 M3 - Article SP - 228 EP - 234 SN - 10412972 AB - Purpose: To review the diagnosis and treatment of hidradenitis suppurativa (HS) in primary care. Data sources: Review of current literature from journals and textbooks as well as clinical experience. Conclusions: HS, a chronic disease causing scarring and pus formation to the skin bearing apocrine glands, requires continual management by the primary care manager and often deems referral to a dermatologist or surgeon. Implications for practice: If misdiagnosed or poorly managed, HS has detrimental effects on patients’ quality of life and self-esteem. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Academy of Nurse Practitioners is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SKIN diseases KW - DISEASE management KW - DIAGNOSIS KW - THERAPEUTICS KW - PRIMARY care (Medicine) KW - DERMATOLOGY KW - MEDICAL care KW - acne inversa KW - dermatology KW - Hidradenitis suppurativa N1 - Accession Number: 24962881; Krbec, Amanda C. 1; Email Address: amanda.krbec@usafa.af.mil; Source Information: May2007, Vol. 19 Issue 5, p228; Subject: SKIN diseases; Subject: DISEASE management; Subject: DIAGNOSIS; Subject: THERAPEUTICS; Subject: PRIMARY care (Medicine); Subject: DERMATOLOGY; Subject: MEDICAL care; Author-Supplied Keyword: acne inversa; Author-Supplied Keyword: dermatology; Author-Supplied Keyword: Hidradenitis suppurativa; Number of Pages: 7p; Document Type: Article L3 - 10.1111/j.1745-7599.2007.00219.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=24962881&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 2007-07464-008 AN - 2007-07464-008 AU - Welton, Randon T1 - The management of suicidality: Assessment and intervention. JF - Psychiatry JO - Psychiatry JA - Psychiatry (Edgmont) Y1 - 2007/05// VL - 4 IS - 5 SP - 24 EP - 32 CY - US PB - Matrix Medical Communications SN - 1550-5952 AD - Welton, Randon, USAF, MC 88 MDOS/SGOH, 4881 Sugar Maple Dr., Wright-Patterson AFB, OH, US, 45433 N1 - Accession Number: 2007-07464-008. Other Journal Title: Innovations in Clinical Neuroscience. Partial author list: First Author & Affiliation: Welton, Randon; United States Air Force, Medical Corps, Wright-Patterson Medical Center, Wright-Patterson Air Force Base, OH, US. Release Date: 20071029. Correction Date: 20110516. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Caregivers; Health Care Services; Prevention; Suicidal Ideation; Suicide. Classification: Promotion & Maintenance of Health & Wellness (3365); Behavior Disorders & Antisocial Behavior (3230). Population: Human (10). Location: US. Methodology: Literature Review. References Available: Y. Page Count: 9. Issue Publication Date: May, 2007. AB - A potentially suicidal patient is among the most difficult challenges faced by healthcare providers. This article reviews rates of suicide in America among the population as a whole and subpopulations based on age and race. In 2003, nearly 11 Americans out of every 100,000 killed themselves. The rates of suicide were highest among whites, Native Americans, and elderly males. Suicide rates are elevated among many common mental illnesses, including major depression, bipolar disorder, schizophrenia, and alcoholism. Although statistical risk factors are significant, they are of limited help in determining what should be done with specific patients. Documenting demographic information, checking off diagnostic criteria, and asking patients if they have thoughts of killing themselves are only the start of the evaluation of suicidality. The complete assessment of suicidality requires inquiring into static and dynamic risks factors, warning signs and psychosocial stresses. Patients who report suicide plans should be asked about the plan in detail, including the chance of rescue, preparations for, and rehearsal of the suicide attempt. Interventions to reduce the risk of suicide should then be targeted towards eliminating or minimizing these various factors. Despite our best efforts patients will occasionally kill themselves. Studies have found that a majority of experienced psychiatrists have had a patient commit suicide. Following the suicide of a patient, clinicians will often experience a professional as well as personal response. Most providers who have experienced a patient suicide find talking to co-workers, peers, and friends to be useful. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - suicidality KW - suicide management KW - health care providers KW - prevention KW - 2007 KW - Caregivers KW - Health Care Services KW - Prevention KW - Suicidal Ideation KW - Suicide KW - 2007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-07464-008&site=ehost-live&scope=site UR - randon.welton@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-08113-001 AN - 2007-08113-001 AU - Keller, David T1 - Leading on top of the world: Lessons from Into Thin Air. JF - Advances in Developing Human Resources JO - Advances in Developing Human Resources JA - Adv Dev Hum Resour Y1 - 2007/05// VL - 9 IS - 2 SP - 166 EP - 182 CY - US PB - Sage Publications SN - 1523-4223 SN - 1552-3055 N1 - Accession Number: 2007-08113-001. Partial author list: First Author & Affiliation: Keller, David; United States Air Force, US. Release Date: 20070806. Correction Date: 20111010. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Decision Making; Group Dynamics; Leadership; Leadership Style; Interpersonal Control. Minor Descriptor: Atmospheric Conditions. Classification: Group & Interpersonal Processes (3020). Population: Human (10). References Available: Y. Page Count: 17. Issue Publication Date: May, 2007. AB - In May 1996, a rogue blizzard blindsided several teams of mountain climbers attempting to scale Mount Everest. Nine climbers died in the frigid conditions after enduring wind chill temperatures in excess of 100 degrees below zero (Fahrenheit). In 1997, author Jon Krakauer chronicled his own firsthand account of the Everest disaster in his best-selling book Into Thin Air. Using Krakauer's account as a backdrop, this article examines several of the leadership theories and concepts demonstrated in the failed climb. Specifically, this article explores the skills approach, situational leadership theory, and team leadership concepts, as well as the influence of power bases and trust on decision making. Finally, teaching strategies are discussed that the reader may find useful when using this work to develop leadership competencies in others. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - mountain climbers KW - decision making KW - leadership KW - situational leadership theory KW - disasters KW - power bases KW - 2007 KW - Decision Making KW - Group Dynamics KW - Leadership KW - Leadership Style KW - Interpersonal Control KW - Atmospheric Conditions KW - 2007 DO - 10.1177/1523422306298857 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-08113-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-07069-002 AN - 2007-07069-002 AU - Previc, Fred H. AU - Ercoline, William R. AU - Evans, Richard H. AU - Dillon, Nathan AU - Lopez, Nadia AU - Daluz, Christina M. AU - Workman, Andrew T1 - Simulator-induced spatial disorientation: Effects of age, sleep deprivation, and type of conflict. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2007/05// VL - 78 IS - 5, Sect 1 SP - 470 EP - 477 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Previc, Fred H., Advanced Technologies Department, Training, Simulation and Performance Improvement Division, Southwest Research Institute, 6220 Culebra Road, San Antonio, TX, US, 78238 N1 - Accession Number: 2007-07069-002. Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Previc, Fred H.; Southwest Research Institute, San Antonio, TX, US. Release Date: 20071015. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Conflict; Physiology; Simulation; Sleep Deprivation; Spatial Orientation (Perception). Minor Descriptor: Age Differences. Classification: Physiological Processes (2540). Population: Human (10); Male (30). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Profile of Mood States Questionnaire; Visual Analogue Scale. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 8. Issue Publication Date: May, 2007. AB - Introduction: Spatial disorientation mishaps are greater at night and with greater time on task, and sleep deprivation is known to decrease cognitive and overall flight performance. However, the ability to perceive and to be influenced by physiologically appropriate simulated SD conflicts has not previously been studied in an automated simulator flight profile. Methods: A set of 10 flight profiles were flown by 10 U.S. Air Force (USAF) pilots over a period of 28 h in a specially designed flight simulator for spatial disorientation research and training. Of the 10 flights, 4 had a total of 7 spatial disorientation (SD) conflicts inserted into each of them, 5 simulating motion illusions and 2 involving visual illusions. The percentage of conflict reports was measured along with the effects of four conflicts on flight performance. Results: The results showed that, with one exception, all motion conflicts were reported over 60% of the time, whereas the two visual illusions were reported on average only 25% of the time, although they both significantly affected flight performance. Pilots older than 35 yr of age were more likely to report conflicts than were those under 30 yr of age (63% vs. 38%), whereas fatigue had little effect overall on either recognized or unrecognized SD. Discussion: The overall effects of these conflicts on perception and performance were generally not altered by sleep deprivation, despite clear indications of fatigue in our pilots. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - simulator induced spatial disorientation KW - age effects KW - sleep deprivation KW - conflict KW - physiology KW - 2007 KW - Conflict KW - Physiology KW - Simulation KW - Sleep Deprivation KW - Spatial Orientation (Perception) KW - Age Differences KW - 2007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-07069-002&site=ehost-live&scope=site UR - fred.previc@swri.org DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-07068-011 AN - 2007-07068-011 AU - Bolia, Robert S. AU - Nelson, W. Todd T1 - Characterizing team performance in network-centric operations: Philosophical and methodological issues. T3 - Operational applications of cognitive performance enhancement technologies JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2007/05// VL - 78 IS - 5, Sect II, Suppl SP - B71 EP - B76 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Bolia, Robert S., Air Force Research Laboratory, 2255 H Street, Wright-Patterson Air Force Base, OH, US, 45433-7022 N1 - Accession Number: 2007-07068-011. Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Bolia, Robert S.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Release Date: 20071029. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Group Performance; Military Psychology; War; Work Teams. Minor Descriptor: Awareness; Group Dynamics; Teams. Classification: Military Psychology (3800). Population: Human (10). References Available: Y. Page Count: 6. Issue Publication Date: May, 2007. AB - The recently promulgated doctrine of network-centric warfare suggests that increases in shared situation awareness and self-synchronization will be emergent properties of densely connected military networks. What it fails to say is how these enhancements are to be measured. The present article frames the discussion as a question of how to characterize team performance, and considers such performance in the context of its hypothetical components: situation awareness, workload, and error. This examination concludes that reliable measures of these constructs are lacking for teams, even when they exist for individual operators, and that this is due to philosophical and/or methodological flaws in their conceptual development. Additional research is recommended to overcome these deficiencies, as well as consideration of novel multidisciplinary approaches that draw on methodologies employed in the social, physical, and biological sciences. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - team performance KW - network centric operations KW - philosophical issues KW - methodological issues KW - warfare KW - military networks KW - 2007 KW - Group Performance KW - Military Psychology KW - War KW - Work Teams KW - Awareness KW - Group Dynamics KW - Teams KW - 2007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-07068-011&site=ehost-live&scope=site UR - Robert.bolia@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-07453-001 AN - 2007-07453-001 AU - Billock, Vincent A. AU - Tsou, Brian H. T1 - Neural interactions between flicker-induced self-organized visual hallucinations and physical stimuli. JF - PNAS Proceedings of the National Academy of Sciences of the United States of America JO - PNAS Proceedings of the National Academy of Sciences of the United States of America JA - Proc Natl Acad Sci U S A Y1 - 2007/05// VL - 104 IS - 20 SP - 8490 EP - 8495 CY - US PB - National Academy of Sciences SN - 0027-8424 SN - 1091-6490 AD - Billock, Vincent A., General Dynamics, Inc., Suite 200, 5200 Springfield Pike, Dayton, OH, US, 45431 N1 - Accession Number: 2007-07453-001. PMID: 17470794 Partial author list: First Author & Affiliation: Billock, Vincent A.; General Dynamics, Inc., Dayton, OH, US. Release Date: 20070730. Correction Date: 20170123. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Hallucinations; Neural Networks; Physical Activity; Visual Stimulation. Minor Descriptor: Vision. Classification: Neuropsychology & Neurology (2520). Population: Human (10). References Available: Y. Page Count: 6. Issue Publication Date: May, 2007. AB - Spontaneous pattern formation in cortical activity may have consequences for perception, but little is known about interactions between sensory-driven and self-organized cortical activity. To address this deficit,we explored the relationship between ordinary stimulus-controlled pattern perception and the autonomous hallucinatory geometrical pattern formation that occurs for unstructured visual stimulation (e.g., empty-field flicker). We found that flicker-induced hallucinations are biased by the presentation of adjacent geometrical stimuli; geometrical forms that map to cortical area V1 as orthogonal gratings are perceptually opponent in biasing hallucinations. Rotating fan blades and pulsating circular patterns are the most salient biased hallucinations. Apparent motion and fractal (1/f) noise are also effective in driving hallucinatory pattern formation (the latter is consistent with predictions of spatiotemporal pattern formation driven by stochastic resonance). The behavior of these percepts suggests that self-organized hallucinatory pattern formation in human vision is governed by the same cortical properties of localized processing, lateral inhibition, simultaneous contrast, and nonlinear retinotopic mapping that govern ordinary vision. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - neural interactions KW - visual hallucinations KW - physical stimuli KW - perception KW - self organized cortical activity KW - 2007 KW - Hallucinations KW - Neural Networks KW - Physical Activity KW - Visual Stimulation KW - Vision KW - 2007 DO - 10.1073/pnas.0610813104 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-07453-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-07068-027 AN - 2007-07068-027 AU - Albery, William B. T1 - Multisensory cueing for enhancing orientation information during flight. T3 - Operational applications of cognitive performance enhancement technologies JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2007/05// VL - 78 IS - 5, Sect II, Suppl SP - B186 EP - B190 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Albery, William B., AFRL/HEPG, Bldg 33, 2215 First St., Wright-Patterson, OH, US, 45433 N1 - Accession Number: 2007-07068-027. Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Albery, William B.; Air Force Research Laboratory, Wright-Patterson, OH, US. Release Date: 20071029. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Cognitions; Cues; Intersensory Processes; Spatial Orientation (Perception). Minor Descriptor: Avoidance; Retention; Safety; Technology. Classification: Sensory Perception (2320); Military Psychology (3800). Population: Human (10). Tests & Measures: Paced Auditory Serial Addition Task DOI: 10.1037/t07640-000. References Available: Y. Page Count: 5. Issue Publication Date: May, 2007. AB - The U.S. Air Force still regards spatial disorientation (SD) and loss of situational awareness (SA) as major contributing factors in operational Class A aircraft mishaps ($1M in aircraft loss and/or pilot fatality). Air Force Safety Agency data show 71 Class A SD mishaps from 1991-2004 in both fixed and rotary-wing aircraft. These mishaps resulted in 62 fatalities and an aircraft cost of over $2.0B. These losses account for 21% of the USAF's Class A mishaps during that 14-yr period. Even non-mishap SD events negatively impact aircrew performance and reduce mission effectiveness. A multisensory system has been developed called the Spatial Orientation Retention Device (SORD) to enhance the aircraft attitude information to the pilot. SORD incorporates multisensory aids including helmet mounted symbology and tactile and audio cues. SORD has been prototyped and demonstrated in the Air Force Research Laboratory at Wright-Patterson AFB, OH. The technology has now been transitioned to a Rotary Wing Brownout program. This paper discusses the development of SORD and a potential application, including an augmented cognition application. Unlike automatic ground collision avoidance systems, SORD does not take over the aircraft if a pre-set altitude is broached by the pilot; rather, SORD provides complementary attitude cues to the pilot via the tactile, audio, and visual systems that allow the pilot to continue flying through disorienting conditions. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - multisensory cueing KW - orientation information KW - flight KW - situational awareness KW - spatial disorientation KW - aircraft mishaps KW - 2007 KW - Aircraft Pilots KW - Cognitions KW - Cues KW - Intersensory Processes KW - Spatial Orientation (Perception) KW - Avoidance KW - Retention KW - Safety KW - Technology KW - 2007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-07068-027&site=ehost-live&scope=site UR - william.albery@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Lorah, Michelle M. AU - Dyer, Linda Jo AU - Burris, David R. T1 - Anaerobic Biodegradation and Hydrogeochemical Controls on Natural Attenuation of Trichloroethene in an Inland Forested Wetland. JO - Bioremediation Journal JF - Bioremediation Journal Y1 - 2007/04//Apr-Jun2007 VL - 11 IS - 2 M3 - Article SP - 85 EP - 102 PB - Taylor & Francis Ltd SN - 10889868 AB - A field and laboratory investigation of natural attenuation, focusing on anaerobic biodegradation, was conducted in a forested wetland where a plume of trichloroethene discharges from a sand aquifer through organic-rich wetland and stream-bottom sediments. The rapid response of the wetland hydrology to precipitation events altered groundwater flow and geochemistry during wet conditions in the spring compared to the drier conditions in the summer and fall. During dry conditions, partial reductive dechlorination of trichloroethene to cis-1,2-dichloroethene occurred in methanogenic wetland porewater. Influx of oxygenated recharge during wet conditions resulted in a change from methanogenic to iron-reducing conditions and a lack of 1,2-dichloroethene production in the wet spring conditions. During these wet conditions, dilution was the primary attenuation mechanism evident for trichloroethene in the wetland porewater. Trichloroethene degradation was insignificant in anaerobic microcosms constructed with the shallow wetland sediment, and microbiological analyses showed a low microbial biomass and absence of known dehalorespiring microorganisms. Despite the typically organic-rich characteristic of wetland sediments, natural attenuation by anaerobic degradation may not be an effective groundwater remediation for chlorinated solvents at all sites. [ABSTRACT FROM AUTHOR] AB - Copyright of Bioremediation Journal is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Hazardous wastes -- Natural attenuation KW - Biodegradation KW - Forested wetlands KW - River sediments KW - Wetland hydrology KW - Groundwater flow KW - Aquifers KW - biodegradation KW - chlorinated solvents KW - groundwater contamination KW - natural attenuation KW - trichloroethene KW - wetlands N1 - Accession Number: 25359886; Lorah, Michelle M. 1; Email Address: mmlorah@usgs.gov; Dyer, Linda Jo 1; Burris, David R. 2; Affiliations: 1: U.S. Geological Survey, MD-DE-DC Water Science Center, Baltimore, Maryland, USA; 2: Air Force Research Laboratory, Tyndall Air Force Base, Florida, USA; Issue Info: Apr-Jun2007, Vol. 11 Issue 2, p85; Thesaurus Term: Hazardous wastes -- Natural attenuation; Thesaurus Term: Biodegradation; Thesaurus Term: Forested wetlands; Thesaurus Term: River sediments; Thesaurus Term: Wetland hydrology; Thesaurus Term: Groundwater flow; Thesaurus Term: Aquifers; Author-Supplied Keyword: biodegradation; Author-Supplied Keyword: chlorinated solvents; Author-Supplied Keyword: groundwater contamination; Author-Supplied Keyword: natural attenuation; Author-Supplied Keyword: trichloroethene; Author-Supplied Keyword: wetlands; NAICS/Industry Codes: 562211 Hazardous Waste Treatment and Disposal; Number of Pages: 18p; Illustrations: 1 Chart, 9 Graphs, 2 Maps; Document Type: Article L3 - 10.1080/10889860701429294 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=25359886&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Weeks, Michael R. AU - Davis, Kevin J. AD - US Air Force Academy AD - US Air Force Academy T1 - Technology and Knowledge Transfer within Outsourcing Relationships: The Development of a Model of Interorganizational Innovation JO - Comparative Technology Transfer and Society JF - Comparative Technology Transfer and Society Y1 - 2007/04// VL - 5 IS - 1 SP - 66 EP - 96 SN - 15420132 N1 - Accession Number: 0916960; Keywords: Diffusion; Outsourcing; Technology; Publication Type: Journal Article; Update Code: 200707 N2 - This article uses a comparative case-study analysis to develop a model of interorganizational innovation. Innovation within outsourcing contexts is embedded within relational and environmental factors that have not been fully explored in prior literature. Yet, efforts to promote innovation within such contexts may be considered a special case of the diffusion of technology across institutional boundaries. Hence, the model derived from the case studies describes the factors necessary for successful technology and knowledge transfer within information-technology outsourcing environments. The model consists of four components: the client, the supplier, the relationship, and the innovation outcomes. Within each of these components we describe process and resource elements that influence the success of technology--and knowledge-transfer efforts. Finally, the interdependencies extant in the model are explored for a more complete understanding of the phenomena under examination. KW - Mergers; Acquisitions; Restructuring; Voting; Proxy Contests; Corporate Governance G34 KW - Contracting Out; Joint Ventures; Technology Licensing L24 KW - Technological Change: Choices and Consequences; Diffusion Processes O33 L3 - http://muse.jhu.edu/journals/ctt/ UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0916960&site=ehost-live&scope=site UR - http://muse.jhu.edu/journals/ctt/ DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Melvin, William L. AU - Davis, Mark E. T1 - Adaptive Cancellation Method for Geometry-Induced Nonstationary Bistatic Clutter Environments. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2007/04// VL - 43 IS - 2 M3 - Article SP - 651 EP - 672 SN - 00189251 AB - This paper describes and characterizes a new bistatic space-time adaptive processing (STAP) clutter mitigation method. The approach involves estimating and compensating aspects of the spatially varying bistatic clutter response in both angle and Doppler prior to adaptive clutter suppression. An important feature of the proposed method is its ability to extract requisite implementation information from the data itself, rather than rely on ancillary—and possibly erroneous or missing-system measurements. We justify the essence of the proposed method by showing its ability to align the dominant clutter subspaces of each range realization relative to a suitably chosen reference point as a means of homogenizing the space-time data set. Moreover, we numerically characterize performance using synthetic bistatic clutter data. For the examples considered herein, the proposed bistatic STAP method leads to maximum performance improvements between 17.25 dB and 20.75 dB relative to traditional STAP application, with average improvements of 6 dB to 10 dB. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DETECTION alarms KW - FUNCTIONAL analysis KW - SIGNAL detection KW - NOISE KW - DOPPLER navigation KW - DATA KW - GEOMETRY KW - BISTATIC radar N1 - Accession Number: 26675383; Melvin, William L. 1; Email Address: bill.melvin@gtri.gatech.edu; Davis, Mark E. 2; Affiliations: 1: Georgia Tech Research Institute, Sensors & Electromagnetic Applications Lab, 7220 Richardson Rd., Smyrna, GA 30080; 2: U.S. Air Force Research Laboratory, Sensors Directorate, 26 Electronic Parkway, Rome, NY 13441–4515; Issue Info: Apr2007, Vol. 43 Issue 2, p651; Thesaurus Term: DETECTION alarms; Thesaurus Term: FUNCTIONAL analysis; Subject Term: SIGNAL detection; Subject Term: NOISE; Subject Term: DOPPLER navigation; Subject Term: DATA; Subject Term: GEOMETRY; Subject Term: BISTATIC radar; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; Number of Pages: 22p; Illustrations: 2 Black and White Photographs, 3 Diagrams, 2 Charts, 22 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=26675383&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Kyoung-Lae Noh AU - Chaudhari, Qasim Mahmood AU - Serpedin, Erchin AU - Suter, Bruce W. T1 - Novel Clock Phase Offset and Skew Estimation Using Two-Way Timing Message Exchanges for Wireless Sensor Networks. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2007/04// VL - 55 IS - 4 M3 - Article SP - 766 EP - 777 SN - 00906778 AB - Recently, a few efficient timing synchronization protocols for wireless sensor networks (WSNs) have been proposed with the goal of maximizing the accuracy and minimizing the power utilization. This paper proposes novel clock skew estimators assuming different delay environments to achieve energy-efficient network-wide synchronization for WSNs. The proposed clock skew correction mechanism significantly increases the re-synchronization period, which is a critical factor in reducing the overall power consumption. The proposed synchronization scheme can be applied to the conventional protocols without additional overheads. More-over, this paper derives the Cramer-Rao lower bounds and the maximum likelihood estimators under different delay models and assumptions. These analytical metrics serves as good benchmarks for the thus far reported experimental results. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Wireless communication systems KW - Synchronization KW - Algorithms KW - Power resources KW - Numerical analysis KW - Mathematical analysis KW - Electrical engineering KW - Electronics KW - Clock synchronization KW - timing-sync protocol for sensor networks (TPSN) KW - wireless sensor network (WSN) N1 - Accession Number: 24988553; Kyoung-Lae Noh 1; Email Address: abigbliss@tamu.edu; Chaudhari, Qasim Mahmood 1; Email Address: qasimilyas@neo.tamu.edu; Serpedin, Erchin 1; Email Address: serpedin@ece.tamu.edu; Suter, Bruce W. 2; Email Address: Bruce.Suter@rl.af.mil; Affiliations: 1: Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX 77843-3128 USA; 2: Air Force Research Laboratory, Rome NY 13441 USA; Issue Info: Apr2007, Vol. 55 Issue 4, p766; Thesaurus Term: Wireless communication systems; Subject Term: Synchronization; Subject Term: Algorithms; Subject Term: Power resources; Subject Term: Numerical analysis; Subject Term: Mathematical analysis; Subject Term: Electrical engineering; Subject Term: Electronics; Author-Supplied Keyword: Clock synchronization; Author-Supplied Keyword: timing-sync protocol for sensor networks (TPSN); Author-Supplied Keyword: wireless sensor network (WSN); NAICS/Industry Codes: 541330 Engineering Services; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 12p; Illustrations: 4 Black and White Photographs, 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1109/TCOMM.2007.894102 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=24988553&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - George, Kiran AU - Chen, Chien-In Henry AU - Tsui, James B. Y. T1 - Extension of Two-Signal Spurious-Free Dynamic Range of Wideband Digital Receivers Using Kaiser Window and Compensation Method. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques J1 - IEEE Transactions on Microwave Theory & Techniques PY - 2007/04// Y1 - 2007/04// VL - 55 IS - 4 M3 - Article SP - 788 EP - 794 SN - 00189480 AB - One of the most major trends in modern microwave signals is the shift toward wider bandwidths. Analog wideband receiver designs can provide accommodation of the technology-stressing bandwidths, but come up to a cost of reduced flexibility. Digital approaches, alternatively, provide flexibility in receiver signal processing, but they are limited by analog-to-digital converter resolution and power consumption. In this paper, design and implementation of a 1-GHz signal bandwidth digital receiver, which uses the Kaiser window function and compensation technique, is presented. The Kaiser window reduces the spectral leakage by eliminating the discontinuities at the time window edges and the compensation uncovers the weak signal for extension of the two-signal spurious-free dynamic range (SFDR) of the receiver. The combination of both techniques extends the two-signal SFDR of the receiver to 24 dB. A novel hardware implementation of the Kaiser window and the compensation method is presented. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIGITAL communications KW - MICROWAVES KW - BANDWIDTHS KW - DIGITAL electronics KW - ANALOG-to-digital converters KW - ELECTRONIC data processing N1 - Accession Number: 24880446; Source Information: Apr2007, Vol. 55 Issue 4, p788; Subject Term: DIGITAL communications; Subject Term: MICROWAVES; Subject Term: BANDWIDTHS; Subject Term: DIGITAL electronics; Subject Term: ANALOG-to-digital converters; Subject Term: ELECTRONIC data processing; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TMTT.2007.892818 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=24880446&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Zelinski, G. M. AU - Thiele, G. A. AU - Hastriter, M. L. AU - Havrilla, M. J. AU - Terzuoli, A. J. T1 - Half width leaky wave antennas. JO - IET Microwaves, Antennas & Propagation JF - IET Microwaves, Antennas & Propagation Y1 - 2007/04// VL - 1 IS - 2 M3 - Article SP - 341 EP - 348 SN - 17518725 AB - Leaky travelling wave antennas that use the first microstrip higher-order mode are analysed. The antennas investigated here are only half the width of previous leaky wave designs and utilise a structure that inherently suppresses the fundamental mode. Since mode purity is assured, the need for an elaborate feed structure is eliminated. A means for extracting the complex propagation constant of a leaky wave antenna is presented using the finite difference time domain (FDTD) method. Agreement is shown between the resulting propagation constant and another established theoretical method, the transverse resonance method. Representative measured far-field patterns are included, which are consistent with the computed propagation constants. The properties of curving the leaky wave structure are also studied. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Microwaves, Antennas & Propagation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNAS (Electronics) KW - ELECTRONIC apparatus & appliances KW - STRIP transmission lines KW - MULTICONDUCTOR transmission lines KW - ELECTRIC lines N1 - Accession Number: 24789237; Zelinski, G. M. 1; Email Address: gregory.zelinskil@wpafb.af.mil; Thiele, G. A. 2; Hastriter, M. L. 3; Havrilla, M. J. 3; Terzuoli, A. J. 3; Affiliations: 1: Air Force Research Laboratory (AFRL) Wright-Patterson AFB, OH 45433; 2: Electrical and Computer Engineering Department, University of Dayton, Dayton OH; 3: Department of Electrical and Computer Engineering, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433; Issue Info: Apr2007, Vol. 1 Issue 2, p341; Subject Term: ANTENNAS (Electronics); Subject Term: ELECTRONIC apparatus & appliances; Subject Term: STRIP transmission lines; Subject Term: MULTICONDUCTOR transmission lines; Subject Term: ELECTRIC lines; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238910 Site Preparation Contractors; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; Number of Pages: 8p; Illustrations: 4 Diagrams, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1049/iet-map:20060011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=24789237&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Vandawaker, Robert M. AU - Palazotto, Anthony N. AU - Cobb, Richard G. T1 - Damage Detection through Analysis of Modes in a Partially Constrained Plate. JO - Journal of Aerospace Engineering JF - Journal of Aerospace Engineering J1 - Journal of Aerospace Engineering PY - 2007/04// Y1 - 2007/04// VL - 20 IS - 2 M3 - Article SP - 90 EP - 96 PB - American Society of Civil Engineers SN - 08931321 AB - The need for aircraft, both military and civilian, to serve longer and cost less to operate is ever present. The ability to potentially extend service life and reduce operating and maintenance costs are key factors in the many choices with aircraft programs. The field of structural health monitoring attempts to reduce labor and cost by allowing technicians to monitor selected properties of an aircraft’s structure to detect impending failure. This research examines methods to detect damage to a thermal protection system tile using representative aluminum plates. Plates are subjected to modal analysis in single and joined conditions in an attempt to provide the capability of sensing damage to a tile on the surface of a vehicle whereas the sensors remain on the substructure of the airframe. Jointly, the development of a means to model the system using finite-element techniques is explored. It is found that the finite-element modeling technique produces correlating modal frequencies within a 7.19% worst case average when compared to the physical tests. This leads to the ability to compare mode shapes and frequencies to detect damage in such a system. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerospace Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES -- Maintenance & repair KW - MILITARY airplanes -- Maintenance & repair KW - OPERATING costs KW - SERVICE life (Engineering) KW - FINITE element method KW - AEROSPACE engineering N1 - Accession Number: 24385350; Source Information: Apr2007, Vol. 20 Issue 2, p90; Subject Term: AIRPLANES -- Maintenance & repair; Subject Term: MILITARY airplanes -- Maintenance & repair; Subject Term: OPERATING costs; Subject Term: SERVICE life (Engineering); Subject Term: FINITE element method; Subject Term: AEROSPACE engineering; Subject Term: ; Number of Pages: 7p; ; Illustrations: 3 Black and White Photographs, 2 Diagrams, 2 Charts, 3 Graphs; ; Document Type: Article; L3 - 10.1061/(ASCE)0893-1321(2007)20:2(90) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=24385350&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Westmoreland, David AU - Schmitz, Matthew AU - Burns, Kevin E. T1 - Egg color as an adaptation for thermoregulation. JO - Journal of Field Ornithology JF - Journal of Field Ornithology Y1 - 2007/04// VL - 78 IS - 2 M3 - Article SP - 176 EP - 183 PB - Wiley-Blackwell SN - 02738570 AB - Avian embryos are incubated at temperatures only 2–6 °C below that at which hyperthermia begins to influence survival. In habitats where sunlight directly strikes the eggs, even for short periods, heat gain may be a substantial threat to survival, and reflective pigmentation may reduce the rate of heat gain. The results of previous studies suggest that light-colored eggs acquire heat slower than dark eggs, but artificial pigments were used to create differences in egg coloration. This approach is problematic because natural eggshell pigments have low absorbance in the near-infrared waveband that encompasses about half of incident solar radiation. We used naturally-pigmented eggs to measure the influence of egg coloration on heat gain. Triads ( N= 18) of eggs from Brewer's ( Euphagous cyanocephalus), Red-winged ( Agelaius phoeniceus), and Yellow-headed ( Xanthocephalus xanthocephalus) blackbirds were crossed with six nests of each species and either exposed to full sunlight or placed under a diffusing umbrella. Thermisters recorded internal egg temperature every minute until an asymptotic temperature was reached. Eggs in full sunlight acquired heat more rapidly than eggs in the shaded environment, but heat gain did not vary with egg color in either environment. Eggs placed in Yellow-headed Blackbird nests took longer to reach asymptotic temperature, but there was no significant egg-by-nest interaction. Thus, it appears that differences in reflectivity of eggshell pigments in the visible range (400–700 nm) do not result in different rates of heat acquisition. The thermoregulation hypothesis was not supported. (English) [ABSTRACT FROM AUTHOR] AB - SINOPSIS. Los embriones de las aves son incubados a temperaturas entre 2–6 grados centigrados bajo el grado de hipertemia en donde se puede influir en la sobrevivencia. En habitats en donde la luz le da directamente a los huevos, aunque sea por periodos cortos, la ganancia en calor puede ser de gran peligro para la supervivencia y la pigmentación pudiera reducir la ganancia de calor. Los estudios previos sugieren que los huevos de colores claros absorven calor más lentamente que los huevos oscuros. Este método de acercamiento es problemático porque los pigmentos naturales en los cascarones tienen baja absorvancia cerca del infrarojo, lo que armoniza con cerca de la mitad de la incidencia de la radiación solar. Utilizamos huevos naturalmente pigmentados para medir la influencia de la coloración de los huevos en la ganancia de calor. Trios (N = 18) de huevos de Euphagous cyanocephalus, Agelaius phoeniceus, y de Xanthocephalus xanthocephalus, fueron entrecruzados con seis nidos de cada especie, ya sea expuestos totalmente a la luz o colocados en luz difusa bajo una sombrilla. Utilizamos termistores para tomar la temperatura interna de los huevos en lapsos de minutos hasta que alcanzaran un punto de temperatura asintótica. Los huevos a plena luz absorvieron calor más rapidamente que los huevos en ambientes sombreados, pero la ganancia en calor no varió en armonía con el color de los huevos en los diferentes ambientes. Los huevos colocados en los nidos de Xanthocephalus tomaron más tiempo en alcanzar una temperatura asintótica, pero no hubo una interacción significativa entre los huevos por nido. Parece ser que las diferencias en reflectividad en la pigmentación de los cascarones, en el espectro de luz visible (400–700 nm) no arroja como resultado diferencias en la tasa de ganancia de calor. Los resultados no apoyan la teoría de termoregulación. (Spanish) [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Field Ornithology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Red-winged blackbird KW - Yellow-headed blackbird KW - Bird eggs KW - Eggs -- Incubation KW - Fever KW - Eggshells KW - Biological pigments KW - Solar radiation KW - blackbirds KW - egg color KW - egg temperature KW - Icteridae KW - pigmentation KW - thermoregulation N1 - Accession Number: 25118402; Westmoreland, David 1; Email Address: David.Westmoreland@usafa.af.mil; Schmitz, Matthew 2; Burns, Kevin E. 3; Affiliations: 1: Department of Biology, HQ USAFA/DFB, 2355 Faculty Drive, Suite 2P389, US Air Force Academy, Colorado 80840, USA; 2: Department of Orthopaedic Surgery, 2200 Bergquist Drive Suite 1, Wilford Hall Medical Center, Lackland AFB, Texas 78236, USA; 3: Department of Mathematical Sciences, HQ USAFA/DFMS, 2354 Fairchild Drive, Suite 6D124, US Air Force Academy, Colorado 80840, USA; Issue Info: Apr2007, Vol. 78 Issue 2, p176; Thesaurus Term: Red-winged blackbird; Thesaurus Term: Yellow-headed blackbird; Subject Term: Bird eggs; Subject Term: Eggs -- Incubation; Subject Term: Fever; Subject Term: Eggshells; Subject Term: Biological pigments; Subject Term: Solar radiation; Author-Supplied Keyword: blackbirds; Author-Supplied Keyword: egg color; Author-Supplied Keyword: egg temperature; Author-Supplied Keyword: Icteridae; Author-Supplied Keyword: pigmentation; Author-Supplied Keyword: thermoregulation; Number of Pages: 8p; Illustrations: 4 Charts, 1 Graph; Document Type: Article L3 - 10.1111/j.1557-9263.2007.00101.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=25118402&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Leedy, Kevin D. AU - Strawser, Richard E. AU - Cortez, Rebecca AU - Ebel, John L. T1 - Thin-Film Encapsulated RF MEMS Switches. JO - Journal of Microelectromechanical Systems JF - Journal of Microelectromechanical Systems J1 - Journal of Microelectromechanical Systems PY - 2007/04// Y1 - 2007/04// VL - 16 IS - 2 M3 - Article SP - 304 EP - 309 SN - 10577157 AB - A wafer-level thin-film encapsulation process has been demonstrated to package radio-frequency (RF) microelectromechanical systems (MEMS) switches in this paper. Individual shunt capacitive switches were packaged in a ~ 1 nL inorganic enclosure with process temperatures not exceeding 300 °C. A shell covering the switch consisted of 10 nm of sputtered alumina and 1.67 µm of sputtered silicon nitride dielectric film. The switch and dielectric shell were simultaneously wet-released through access channels in the shell. Following release, access channels were sealed with 10 nm of sputtered alumina and 2-4 µm of either plasma-enhanced chemical vapor deposited silicon dioxide or silicon nitride. Electromagnetic simulation and RF test results before and after sealing show minimal RF degradation of switch performance. Before sealing, the insertion loss and isolation at 10 GHz averaged 0.12 and 10.7 dB, respectively. After sealing, the same devices had an average insertion loss and isolation of 0.12 and 10.1 dB, respectively. Complete characterization of the package atmosphere was not completed due to challenges in assessing nanoliter-scale volumes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microelectromechanical Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO frequency KW - MICROELECTROMECHANICAL systems KW - THIN films KW - SILICON nitride KW - SILICA KW - MECHATRONICS N1 - Accession Number: 25108692; Source Information: Apr2007, Vol. 16 Issue 2, p304; Subject Term: RADIO frequency; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: THIN films; Subject Term: SILICON nitride; Subject Term: SILICA; Subject Term: MECHATRONICS; Subject Term: ; Number of Pages: 6p; ; Illustrations: 6 Diagrams, 2 Charts, 4 Graphs; ; Document Type: Article; L3 - 10.1109/JMEMS.2007.892915 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=25108692&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Schumacher, C. AU - Chandler, P. R. AU - Pachter, M. AU - Pachter, L. S. T1 - Optimization of air vehicles operations using mixed-integer linear programming. JO - Journal of the Operational Research Society JF - Journal of the Operational Research Society Y1 - 2007/04// VL - 58 IS - 4 M3 - Article SP - 516 EP - 527 SN - 01605682 AB - A scenario where multiple air vehicles are required to prosecute geographically dispersed targets is considered. Furthermore, multiple tasks are to be successively performed on each target, that is, the targets must be classified, attacked, and verified as destroyed. The optimal, for example, minimum time, performance of these tasks requires cooperation among the vehicles such that critical timing constraints are satisfied, that is, a target must be classified before it can be attacked, and an air vehicle is sent to a target area to verify its destruction only after the target has been attacked. In this paper, the optimal task assignment/scheduling problem is posed as a mixed-integer linear program (MILP). The solution of the MILP assigns all tasks to the vehicles and performs the scheduling in an optimal manner, including staged departure times. Coupled tasks involving timing and task order constraints are automatically addressed. When the air vehicles have sufficient endurance, the existence of a solution is guaranteed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Operational Research Society is the property of Palgrave Macmillan Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LINEAR programming KW - PLANNING KW - OPERATIONS research KW - SCHEDULING KW - SPECIAL operations (Military science) KW - linear programming KW - military KW - optimization KW - planning KW - scheduling N1 - Accession Number: 24652605; Schumacher, C. 1; Chandler, P. R. 1; Pachter, M. 2; Email Address: meir.pachter@afit.edu; Pachter, L. S. 3; Affiliations: 1: Air Force Research Laboratory (AFRL/VACA) Wright-Patterson AFB, OH, USA.; 2: Air Force Institute of Technology (AFIT/ENG) Wright-Patterson AFB, OH, USA.; 3: University of California at Berkeley, Berkeley, CA, USA.; Issue Info: Apr2007, Vol. 58 Issue 4, p516; Thesaurus Term: LINEAR programming; Thesaurus Term: PLANNING; Thesaurus Term: OPERATIONS research; Thesaurus Term: SCHEDULING; Subject Term: SPECIAL operations (Military science); Author-Supplied Keyword: linear programming; Author-Supplied Keyword: military; Author-Supplied Keyword: optimization; Author-Supplied Keyword: planning; Author-Supplied Keyword: scheduling; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; Number of Pages: 12p; Document Type: Article L3 - 10.1057/palgrave.jors.2602176 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=24652605&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - NEWS AU - Buchi, Richard H. T1 - Alternative, non-toxic chromates meet military aircraft specs: PreKote paint system saves U.S. Air Force both time and money, while reducing environmental impact JO - Metal Finishing JF - Metal Finishing Y1 - 2007/04// VL - 105 IS - 4 M3 - Editorial SP - 37 EP - 40 SN - 00260576 N1 - Accession Number: 37154053; Buchi, Richard H. 1; Email Address: buchiS0102@msn.com; Affiliations: 1: United States Air Force, Science And Engineering, OO-ALC/MADL, 4th Street Hill Air Force Base, Utah; Issue Info: Apr2007, Vol. 105 Issue 4, p37; Number of Pages: 4p; Document Type: Editorial UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=37154053&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 2007-07550-002 AN - 2007-07550-002 AU - Rate, Christopher R. AU - Clarke, Jennifer A. AU - Lindsay, Douglas R. AU - Sternberg, Robert J. T1 - Implicit theories of courage. T3 - Courage JF - The Journal of Positive Psychology JO - The Journal of Positive Psychology Y1 - 2007/04// VL - 2 IS - 2 SP - 80 EP - 98 CY - United Kingdom PB - Taylor & Francis SN - 1743-9760 SN - 1743-9779 AD - Rate, Christopher R., Department of Psychology, Yale University, New Haven, CT, US, 06520 N1 - Accession Number: 2007-07550-002. Partial author list: First Author & Affiliation: Rate, Christopher R.; Department of Psychology, Yale University, New Haven, CT, US. Release Date: 20071001. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Courage; Theories. Classification: Personality Traits & Processes (3120). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 19. Issue Publication Date: Apr, 2007. AB - What is courage? This question garners significant interest and attention but little empirical research. An operational definition of courage is essential to good research, yet no consensus definition has fully emerged. This article systematically investigates people's conceptions of courage and courageous behavior through a series of studies employing well-grounded implicit methodologies. The organizational structure and components of courage are investigated using a response-generating task (Study 1) and alternate methods (Studies 2 and 3), followed by an experimental approach to determine if people actually use their implicit theories in their evaluations of others (Study 4). Collectively, these studies reveal an organizational structure of people's implicit theories of courage. Further, they indicate that people apply their implicit theories accurately in evaluating others. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - implicit theories KW - courage KW - 2007 KW - Courage KW - Theories KW - 2007 U1 - Sponsor: Yale University, Department of Psychology. Recipients: No recipient indicated U1 - Sponsor: US Department of Education, Institute of Education Sciences, Javits Act Program, US. Grant: R206R00001. Other Details: Yale Center for the Psychology of Abilities, Competencies, and Expertise. Recipients: No recipient indicated DO - 10.1080/17439760701228755 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-07550-002&site=ehost-live&scope=site UR - Christopher.rate@yale.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-04152-007 AN - 2007-04152-007 AU - Wilson, Katherine A. AU - Salas, Eduardo AU - Priest, Heather A. AU - Andrews, Dee T1 - Errors in the heat of battle: Taking a closer look at shared cognition breakdowns through teamwork. T3 - Classifying and Understanding Human Error JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2007/04// VL - 49 IS - 2 SP - 243 EP - 256 CY - US PB - Human Factors & Ergonomics Society SN - 0018-7208 SN - 1547-8181 AD - Wilson, Katherine A., Institute for Simulation & Training, University of Central Florida, 3100 Technology Pkwy., Orlando, FL, US, 32826 N1 - Accession Number: 2007-04152-007. PMID: 17447666 Partial author list: First Author & Affiliation: Wilson, Katherine A.; Institute for Simulation & Training, Orlando, FL, US. Other Publishers: Sage Publications. Release Date: 20070430. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cognition; Criminal Behavior; Decision Making; Errors; Work Teams. Minor Descriptor: Taxonomies. Classification: Criminal Behavior & Juvenile Delinquency (3236). Population: Human (10). References Available: Y. Page Count: 14. Issue Publication Date: Apr, 2007. AB - Objective: We developed a theoretically based taxonomy for classifying shared cognition breakdowns related to teamwork which contribute to fratricide incidents. Background: Fratricide on the battlefield is an inescapable cost of war. A number of technological advancements have been made in terms of combat identification systems to reduce the risk of these incidents. However, fratricide continues to occur at alarming rates. Method: We take a human-centered approach to understanding errors leading to fratricide incidents by focusing on shared cognition. We turn to the literature and provide the theoretical foundations for an error classification taxonomy to improve understanding of why fratricide incidents occur. Results: Based on our review of the literature, we identified a number of problem areas leading to fratricide incidents. However, many of the cited contributing factors were broad terms (e.g., poor coordination) and did little to tell us why the breakdown occurred and where improvements are needed. Therefore, we chose to focus on one specific area--teamwork breakdowns--and discuss in depth how these breakdowns contribute to fratricide. Conclusion: In this paper, we take a first step toward proposing a taxonomy that allows for the diagnostic assessment of what causes teamwork breakdowns in fratricide. We understand that a taxonomy is only as good as the data available and encourage richer case studies from which to learn. Application: To apply this taxonomy in an operational setting, we provide a set of behavioral markers that can be used to identify teamwork breakdowns on the battlefield. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - teamwork KW - errors KW - fratricide incidents KW - taxonomies KW - shared cognition breakdowns KW - 2007 KW - Cognition KW - Criminal Behavior KW - Decision Making KW - Errors KW - Work Teams KW - Taxonomies KW - 2007 U1 - Sponsor: US Air Force Research Laboratory, US. Recipients: No recipient indicated DO - 10.1518/001872007X312478 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-04152-007&site=ehost-live&scope=site UR - kwilson@ist.ucf.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Zhang, Lijian AU - U'ren, Alfred B. AU - Erdmann, Reinhard AU - O'Donnell, Kevin A. AU - Silberhorn, Christine AU - Banaszek, Konrad AU - Walmsley, Ian A. T1 - Generation of highly entangled photon pairs for continuous variable Bell inequality violation. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2007/03/20/ VL - 54 IS - 5 M3 - Article SP - 707 EP - 719 SN - 09500340 AB - We propose a novel experimental technique based on the process of parametric downconversion for the generation of photon pairs characterized by ultra-high dimensional spectral entanglement. It is shown that a superlattice of nonlinear and linear segments can be exploited to obtain states exhibiting a remarkably large entanglement, with a Schmidt number in the region of 107. We furthermore consider the application of such highly entangled photon pairs for the violation of a Bell inequality constructed from a measurement of the transverse wavevector Wigner function; such an approach eliminates the need for filtering the photon pairs and consequently eliminates an important potential loophole. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTONS KW - QUANTUM optics KW - BOSE-Einstein gas KW - BELL'S theorem KW - QUANTUM theory KW - OPTICAL polarization KW - GEOMETRY N1 - Accession Number: 24591006; Zhang, Lijian 1; U'ren, Alfred B. 2; Email Address: auren@cicese.mx; Erdmann, Reinhard 3; O'Donnell, Kevin A. 2; Silberhorn, Christine 4; Banaszek, Konrad 5; Walmsley, Ian A. 1; Affiliations: 1: Clarendon Laboratory, Oxford University, Parks Road, Oxford, OX1 3PU, UK; 2: Centro de Investigación Científica y Educación Superior de Ensenada (CICESE), Ensenada, Baja California, 22860, Mexico; 3: Sensors Directorate, Air Force Research Laboratory, Rome, NY; 4: Institut für Optik, Information und Photonik Universität Erlangen-Nürnberg, 91058 Erlangen, Germany; 5: Institute of Physics, Nicolaus Copernicus University, ul. Grudziadzka 5, PL-87-100 Toruń, Poland; Issue Info: 3/20/2007, Vol. 54 Issue 5, p707; Subject Term: PHOTONS; Subject Term: QUANTUM optics; Subject Term: BOSE-Einstein gas; Subject Term: BELL'S theorem; Subject Term: QUANTUM theory; Subject Term: OPTICAL polarization; Subject Term: GEOMETRY; Number of Pages: 13p; Illustrations: 2 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1080/09500340600798454 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=24591006&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Ashcroft, Bruce T1 - G.I. Nightingales: The Army Nurse Corps in World War II. JO - Air Power History JF - Air Power History J1 - Air Power History PY - 2007///Spring2007 Y1 - 2007///Spring2007 VL - 54 IS - 1 M3 - Book Review SP - 54 EP - 54 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "G.I. Nightingales: The Army Nurse Corps in World War II," by Barbara Brooks Tomblin. KW - GI Nightingales: The Army Nurse Corps in World War II (Book) KW - TOMBLIN, Barbara Brooks KW - NURSES KW - NONFICTION N1 - Accession Number: 24293046; Source Information: Spring2007, Vol. 54 Issue 1, p54; Subject Term: GI Nightingales: The Army Nurse Corps in World War II (Book); Subject Term: TOMBLIN, Barbara Brooks; Subject Term: NURSES; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 1/2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=24293046&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - AU - Cain, A. C.1 T1 - Hell in the Holy Land: World War I in the Middle East. JO - Choice: Current Reviews for Academic Libraries JF - Choice: Current Reviews for Academic Libraries J1 - Choice: Current Reviews for Academic Libraries PY - 2007/03// Y1 - 2007/03// VL - 44 IS - 7 CP - 7 M3 - Book Review SP - 1227 EP - 1227 SN - 00094978 AB - The article reviews the book "Hell in the Holy Land: World War I in the Middle East," by David R. Woodward. KW - Nonfiction KW - World War, 1914-1918 KW - Woodward, David R. KW - Hell in the Holy Land: World War I in the Middle East (Book) N1 - Accession Number: 24564972; Authors: Cain, A. C. 1; Affiliations: 1: United States Air Force, Air University; Subject: Hell in the Holy Land: World War I in the Middle East (Book); Subject: Woodward, David R.; Subject: World War, 1914-1918; Subject: Nonfiction; Number of Pages: 1/6p; Record Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=24564972&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - Schoeppner, G.A. AU - Tandon, G.P. AU - Ripberger, E.R. T1 - Anisotropic oxidation and weight loss in PMR-15 composites JO - Composites: Part A, Applied Science & Manufacturing JF - Composites: Part A, Applied Science & Manufacturing Y1 - 2007/03// VL - 38 IS - 3 M3 - Article SP - 890 EP - 904 SN - 1359835X AB - Abstract: Durability and degradation mechanisms in composites are fundamentally influenced by the fiber, matrix, and interphase regions that constitute the composite domain. The thermo-oxidative behavior of the composite is significantly different from that of the fiber and matrix constituents as the composite microstructure, including the fiber–matrix interphases/interfaces, introduces anisotropy in the diffusion behavior. In this work, unidirectional G30-500/PMR-15 composite specimens were aged at elevated temperatures in air resulting in oxidation propagation parallel and perpendicular to the fibers. Four different specimen geometries were chosen such that different surface area ratios (i.e., ratios of surface area perpendicular to the fibers to surface area parallel to the fibers) were obtained. Weight loss and volumetric changes were monitored as a function of aging time to study the high-temperature anisotropic oxidation process. Optical micrographs were taken on polished internal sections and viewed in the dark-field mode to measure the degree, depth and distribution of thermal oxidation development from surfaces perpendicular and parallel to the fibers. An empirically based weight loss model is investigated and used to predict weight loss in unidirectional and woven composites. [Copyright &y& Elsevier] AB - Copyright of Composites: Part A, Applied Science & Manufacturing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WEIGHT loss KW - BODY weight KW - OXIDATION KW - ANISOTROPY KW - A. Polymer-matrix composites (PMCs) KW - B. Anisotropy KW - B. Environmental degradation KW - B. High-temperature properties N1 - Accession Number: 23449658; Schoeppner, G.A. 1; Email Address: Greg.Schoeppner@wpafb.af.mil; Tandon, G.P. 2; Ripberger, E.R. 1; Affiliations: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, United States; 2: University of Dayton Research Institute, Dayton, OH, United States; Issue Info: Mar2007, Vol. 38 Issue 3, p890; Subject Term: WEIGHT loss; Subject Term: BODY weight; Subject Term: OXIDATION; Subject Term: ANISOTROPY; Author-Supplied Keyword: A. Polymer-matrix composites (PMCs); Author-Supplied Keyword: B. Anisotropy; Author-Supplied Keyword: B. Environmental degradation; Author-Supplied Keyword: B. High-temperature properties; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.compositesa.2006.07.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=23449658&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Sztipanovits, Janos AU - Bay, John AU - Rohrbough, Larry AU - Sastry, Shankar AU - Schmidt, Douglas C. AU - Whitaker, Norm AU - Wilson, Don AU - Winter, Don T1 - Escher: A New Technology Transitioning Model. JO - Computer (00189162) JF - Computer (00189162) J1 - Computer (00189162) PY - 2007/03// Y1 - 2007/03// VL - 40 IS - 3 M3 - Article SP - 90 EP - 92 SN - 00189162 AB - The article discusses a new technology transitioning model called the Escher model. The returns on a product as an investment must be sufficient to fuel the research. Technology transitioning helps scientists and researchers decide what areas to focus on when attempting to create new products. Including the Escher transitioning model, two others exist, the traditional model and the consortium model. The traditional model dictates that universities and nonprofits receive public funding and convey their findings via publications and education. The consortium model is a conglomeration of industry partners who work together to fund research. The Embedded System Consortium for Hybrid and Embedded Research (Escher) model relies on government and industry funding to benefit both. KW - EMBEDDED computer systems KW - GOVERNMENT research & development contracts KW - RESEARCH & development partnership KW - TECHNOLOGICAL innovations -- Economic aspects KW - INDUSTRIAL research KW - NEW product development -- Economic aspects KW - RESEARCH -- United States KW - RESEARCH universities & colleges KW - UNITED States N1 - Accession Number: 24466926; Source Information: Mar2007, Vol. 40 Issue 3, p90; Subject Term: EMBEDDED computer systems; Subject Term: GOVERNMENT research & development contracts; Subject Term: RESEARCH & development partnership; Subject Term: TECHNOLOGICAL innovations -- Economic aspects; Subject Term: INDUSTRIAL research; Subject Term: NEW product development -- Economic aspects; Subject Term: RESEARCH -- United States; Subject Term: RESEARCH universities & colleges; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 3p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=24466926&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Miller, J. O. AU - Bauer, K. W. AU - Faas, P. AU - Pawling, C. R. AU - Sterling, S. E. T1 - Multivariate analysis of a simulated prognostics and health management system for military aircraft maintenance. JO - International Journal of Logistics: Research & Applications JF - International Journal of Logistics: Research & Applications Y1 - 2007/03// VL - 10 IS - 1 M3 - Article SP - 1 EP - 10 SN - 13675567 AB - The Air Force logistics operations system is, in general, reactive in nature, with unscheduled aircraft maintenance beginning with a signal for out of tolerance conditions from the aircraft, subsequent fault isolation procedures performed by a maintenance team, and the steps taken to repair or replace the faulty item. The Joint Strike Fighter (JSF) programme has been pursuing an autonomic logistics system (ALS) concept that changes this reactive process into a proactive one, with the employment of technologies such as prognostics and a distributed information network. This paper briefly describes a simulation model of a prognostics and health management (PHM) system employed as part of an ALS for a JSF-type aircraft. The simulation produces a large number of commonly used flight line measures of performance for aircraft availability and mission effectiveness. Multivariate statistical analysis of these outputs provides a means to assess the impact of a PHM system on aircraft productivity. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Logistics: Research & Applications is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIVARIATE analysis KW - AIRPLANES KW - INFORMATION networks KW - FIGHTER planes KW - ARMED Forces KW - Military logistics KW - Multivariate statistics KW - Prognostics KW - Simulation N1 - Accession Number: 24154894; Miller, J. O. 1; Email Address: John.Miller@afit.edu; Bauer, K. W. 1; Faas, P. 2; Pawling, C. R. 3; Sterling, S. E. 4; Affiliations: 1: AFIT/ENS, 2950 Hobson Way, Wright-Patterson AFB, OH, 45433-7765, USA.; 2: Deployment and Sustainment Division, Human Effectiveness Directorate, Air Force Research Laboratory, Logistics Readiness Branch, Wright-Patterson AFB, OH, 45433, USA.; 3: HQ ACC/DRYF, Langely AFB, VA, 23665, USA.; 4: 414 CTS/PEA, Nellis AFB, NV, 89191, USA.; Issue Info: Mar2007, Vol. 10 Issue 1, p1; Thesaurus Term: MULTIVARIATE analysis; Thesaurus Term: AIRPLANES; Thesaurus Term: INFORMATION networks; Subject Term: FIGHTER planes; Subject Term: ARMED Forces; Author-Supplied Keyword: Military logistics; Author-Supplied Keyword: Multivariate statistics; Author-Supplied Keyword: Prognostics; Author-Supplied Keyword: Simulation; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 10p; Illustrations: 2 Diagrams, 4 Charts, 2 Graphs; Document Type: Article L3 - 10.1080/13675560600563043 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=24154894&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Skebo, Jeanne E. AU - Grabinski, Christin M. AU - Schrand, Amanda M. AU - Schlager, John J. AU - Hussain, Saber M. T1 - Assessment of Metal Nanoparticle Agglomeration, Uptake, and Interaction Using High-Illuminating System. JO - International Journal of Toxicology (Taylor & Francis) JF - International Journal of Toxicology (Taylor & Francis) Y1 - 2007/03//Mar/Apr2007 VL - 26 IS - 2 M3 - Article SP - 135 EP - 141 PB - Taylor & Francis Ltd SN - 10915818 AB - In the present study, an ultrahigh-resolution system was applied as a simple and convenient technique to characterize the extent of metal nanoparticle agglomeration in solution and to visualize nanoparticle agglomeration, uptake, and surface interaction in three cell phenotypes under normal culture conditions. The experimental results demonstrated that silver (25, 80, 130 nm); aluminum (80 nm); and manganese (40 nm) particles and agglomerates were effectively internalized by rat liver cells (BRL 3A), rat alveolar macrophages (MACs), and rat neuroendocrine cells (PC-12). Individual and agglomerated nanoparticles were observed within the cells and agglomerates were observed on the cell surface membranes. The particles were initially dispersed in aqueous or physiological balanced salt solutions and agglomeration was observed using the Ultra Resolution Imaging (URI) system. Different methods, such as sonication and addition of surfactant (0.1% sodium dodecyl sulfate [SDS]) reduced agglomeration. Due to effects of SDS itself on cell viability, the surfactant could not be directly applied during cell exposure. Therefore, following addition of 0.1% SDS, the particles were washed twice with ultrapure water, which reduced agglomeration even further. Reducing the agglomeration of the nanoparticles is important for studying their uptake and in applications that benefit from individual nanoparticles such as diagnostics. In summary, this study demonstrates a simple technique to characterize the extent of nanoparticle agglomeration in solution and visualize nanoparticle (40 nm and larger) uptake and interaction with cells. Additionally, an example application of nanoparticle labeling onto the surface and neurite extensions of murine neuroblastoma cells (N2A) is presented as a potential imaging tool. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Toxicology (Taylor & Francis) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Aluminum KW - Manganese KW - Silver KW - Agglomeration (Materials) KW - Nanoparticles KW - Cell lines KW - Cell culture KW - Liver cells KW - Rats as laboratory animals KW - Agglomeration KW - Cell Lines N1 - Accession Number: 24515455; Skebo, Jeanne E. 1; Grabinski, Christin M. 1; Schrand, Amanda M. 1; Schlager, John J. 1; Hussain, Saber M. 1; Email Address: Saber.Hussain@wpafb.af.mil; Affiliations: 1: Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force Research Laboratory/HEPB, Wright-Patterson Air Force Base, Ohio, USA.; Issue Info: Mar/Apr2007, Vol. 26 Issue 2, p135; Thesaurus Term: Aluminum; Thesaurus Term: Manganese; Thesaurus Term: Silver; Subject Term: Agglomeration (Materials); Subject Term: Nanoparticles; Subject Term: Cell lines; Subject Term: Cell culture; Subject Term: Liver cells; Subject Term: Rats as laboratory animals; Author-Supplied Keyword: Agglomeration; Author-Supplied Keyword: Cell Lines; NAICS/Industry Codes: 212210 Iron Ore Mining; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 7p; Document Type: Article L3 - 10.1080/10915810701226248 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=24515455&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Zhupanska, Olesya I. AU - Sierakowski, Robert L. T1 - Effects of an Electromagnetic Field on the Mechanical Response of Composites. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2007/03// VL - 41 IS - 5 M3 - Article SP - 633 EP - 652 SN - 00219983 AB - The existing experimental evidence suggests that exposure of a composite material to an electromagnetic field leads to changes in the material's strength and resistance to delamination. In this work, the mechanical response of transversely isotropic graphite/epoxy composite plates in the presence of an electromagnetic field is studied. The interacting effects of the in-plane steady and slowly varying electric current, external magnetic field, and mechanical load as well as the effects of mechanical and electrical anisotropies are investigated. It is shown that an electromagnetic field may significantly enhance or reduce the deformed state of the composite plate depending on the direction of its application and its intensity. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC fields KW - COMPOSITE materials KW - POLYMERS KW - ELECTRIC currents KW - ANISOTROPY KW - EPOXY resins KW - anisotropic plate KW - electric current KW - electro-magneto-mechanical coupling KW - electromagnetic field KW - polymer matrix composites N1 - Accession Number: 24469341; Zhupanska, Olesya I. 1; Email Address: zhupanska@gerc.eng.ufl.edu; Sierakowski, Robert L. 2; Source Information: Mar2007, Vol. 41 Issue 5, p633; Subject: ELECTROMAGNETIC fields; Subject: COMPOSITE materials; Subject: POLYMERS; Subject: ELECTRIC currents; Subject: ANISOTROPY; Subject: EPOXY resins; Author-Supplied Keyword: anisotropic plate; Author-Supplied Keyword: electric current; Author-Supplied Keyword: electro-magneto-mechanical coupling; Author-Supplied Keyword: electromagnetic field; Author-Supplied Keyword: polymer matrix composites; Number of Pages: 20p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1177/0021998306065293 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=24469341&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Reiman, Robert W. AU - Atchley, Daniel H. AU - Voorhees, Kent J. T1 - Indirect detection of Bacillus anthracis using real-time PCR to detect amplified gamma phage DNA JO - Journal of Microbiological Methods JF - Journal of Microbiological Methods Y1 - 2007/03// VL - 68 IS - 3 M3 - Article SP - 651 EP - 653 SN - 01677012 AB - Abstract: Typical real-time PCR methods used to identify Bacillus anthracis do not distinguish between viable and non-viable spores, which would be critical in any first response and remediation scenarios. This study combined both real-time PCR, using primers specifically designed for gamma phage, with the highly specific gamma phage amplification into one simple assay to indirectly detect Bacillus anthracis. Since the amplification of gamma phage only occurs in the presence of a suitable host, the detection of increasing concentrations of progeny gamma phage DNA using real-time PCR implies the presence of viable Bacillus anthracis cells. This method detected a starting Bacillus anthracis concentration of 207 cfu/mL, equivalent to less than one cell in 20 μL, in less than 5 h. [Copyright &y& Elsevier] AB - Copyright of Journal of Microbiological Methods is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Bacillus anthracis KW - Nucleic acids KW - Polymerase chain reaction KW - Gene amplification KW - Bacteriophage amplification KW - Detect Bacillus anthracis KW - Gamma phage KW - Gamma phage primers KW - Real-time PCR KW - RT-PCR N1 - Accession Number: 24045567; Reiman, Robert W. 1; Email Address: rreiman@mines.edu; Atchley, Daniel H. 2; Voorhees, Kent J. 1; Affiliations: 1: Department of Chemistry and Geochemistry, Colorado School of Mines, Golden, CO, USA; 2: Department of Biology, United States Air Force Academy, USAFA, CO, USA; Issue Info: Mar2007, Vol. 68 Issue 3, p651; Thesaurus Term: Bacillus anthracis; Thesaurus Term: Nucleic acids; Subject Term: Polymerase chain reaction; Subject Term: Gene amplification; Author-Supplied Keyword: Bacteriophage amplification; Author-Supplied Keyword: Detect Bacillus anthracis; Author-Supplied Keyword: Gamma phage; Author-Supplied Keyword: Gamma phage primers; Author-Supplied Keyword: Real-time PCR; Author-Supplied Keyword: RT-PCR; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.mimet.2006.11.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=24045567&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Armacost, Andrew P. AU - Lowe, James K. T1 - Grouping Personnel for Performance Evaluation via Integer Programming. JO - Military Operations Research JF - Military Operations Research J1 - Military Operations Research PY - 2007/03// Y1 - 2007/03// VL - 12 IS - 1 M3 - Article SP - 5 EP - 17 SN - 10825983 AB - The article reports on the significance of developing integer programming models for performance evaluation of group personnel. Integer programming models allow the U.S. Air Force Academy (USAFA) General Board to split fairly the cadets and offer comparisons to a randomized approach. Thus, they also address key implementation issues they faced when adopting this model within the institutional Cadet Administrative Management Information System (CAMIS). KW - INTEGER programming KW - EMPLOYEES -- Rating of KW - PERFORMANCE evaluation KW - MILITARY cadets KW - UNITED States Air Force Academy KW - UNITED States N1 - Accession Number: 25129132; Source Information: 2007, Vol. 12 Issue 1, p5; Subject Term: INTEGER programming; Subject Term: EMPLOYEES -- Rating of; Subject Term: PERFORMANCE evaluation; Subject Term: MILITARY cadets; Subject Term: UNITED States Air Force Academy; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 13p; ; Illustrations: 5 Charts, 4 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=25129132&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2007-03432-004 AN - 2007-03432-004 AU - Holt, Daniel T. AU - Rehg, Michael T. AU - Lin, Jeffrey H. S. AU - Miller, Jennifer T1 - An application of the unfolding model to explain turnover in a sample of military officers. T3 - Human Resource Management and Leadership Lessons from the Military JF - Human Resource Management JO - Human Resource Management JA - Hum Resour Manage Y1 - 2007///Spr 2007 VL - 46 IS - 1 SP - 35 EP - 49 CY - US PB - John Wiley & Sons SN - 0090-4848 SN - 1099-050X AD - Holt, Daniel T., Department of Systems and Engineering Management, Air Force Institute of Technology, 2950 Hobson Way, Wright Patterson AFB, OH, US, 45433 N1 - Accession Number: 2007-03432-004. Partial author list: First Author & Affiliation: Holt, Daniel T.; Air Force Institute of Technology, Dayton, OH, US. Release Date: 20070430. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Conference Information: Southern Management Association Conference. Conference Note: A previous version of this manuscript was accepted for presentation at the Southern Management Association Conference. Major Descriptor: Commissioned Officers; Employee Turnover; Military Personnel; Human Resource Management. Classification: Military Psychology (3800); Personnel Attitudes & Job Satisfaction (3650). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 15. Issue Publication Date: Spr 2007. AB - Questionnaire data from 182 Air Force officers who had voluntarily separated from the service were used to test Lee and Mitchell's (1994) unfolding model of voluntary turnover. Specifically, Lee and Mitchell predict five distinct paths to voluntary turnover, explaining the sequence of deliberate and impulsive decisions individuals make as they choose to leave organizations, where individuals interpret an organizational event, assess their relation to the workplace, evaluate options, and enact a response. Results indicate that 47% of the participants followed those five paths. Model modifications were made that reflect the unique nature of military service where members have preexisting plans to leave the service after a defined period or event. These modifications capture an additional 36% to explain 83% of the turnover decisions. The implications of these findings are addressed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - voluntary separation KW - unfolding model of voluntary turnover KW - U.S. Air Force KW - military officers KW - 2007 KW - Commissioned Officers KW - Employee Turnover KW - Military Personnel KW - Human Resource Management KW - 2007 DO - 10.1002/hrm.20144 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-03432-004&site=ehost-live&scope=site UR - daniel.holt@afit.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-09131-006 AN - 2008-09131-006 AU - Boyd, Michael AU - Huang, Shi-Ming AU - Jiang, James J. AU - Klein, Gary T1 - Discrepancies between desired and perceived measures of performance of IS professionals: Views of the IS professionals themselves and the users. JF - Information & Management JO - Information & Management Y1 - 2007/03// VL - 44 IS - 2 SP - 188 EP - 195 CY - Netherlands PB - Elsevier Science SN - 0378-7206 AD - Jiang, James J., Department of Management Information Systems, College of Business, University of Central Florida, Orlando, FL, US, 32816-1400 N1 - Accession Number: 2008-09131-006. Partial author list: First Author & Affiliation: Boyd, Michael; Department of Management, Marketing, and Political Science, College of Business and Public Affairs, University of Tennessee at Martin, Martin, TN, US. Release Date: 20090420. Correction Date: 20100913. Publication Type: Journal (0100), Peer-Reviewed Status-Unknown (0130). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Information Systems; Job Performance; Ownership; Personnel Evaluation. Minor Descriptor: Satisfaction. Classification: Industrial & Organizational Psychology (3600). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 8. Issue Publication Date: Mar, 2007. AB - Evaluation of IS professionals is difficult. Measures are seldom fully defined and suffer from the inability of a user to consider differences between expectations and perceptions of performance. In addition, expected levels of performance and perceived levels of performance depend on the satisfaction of each group of stakeholders. Discrepancy theory leads one to expect that satisfaction is highest when performance matches expectations. To explore this gap in different groups, a sample of users and a matched sample of IS professionals was investigated in order to determine the relationship between the performance gap and satisfaction with the system on the part of the users and careers on the part of the IS professionals. Larger gaps were found to be associated with poor satisfaction in both samples. Additionally, each group had a different set of expectations, indicating that the measures did not represent the same expectation or meanings to different stakeholders. Thus, management should strive to promote uniform understanding of the measures employed in IS professional performance evaluation by all stakeholders and manage expectations according to the metrics selected. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - discrepancies KW - desired measures KW - perceived measures KW - performance KW - information system professionals KW - professional views KW - performance evaluation KW - stakeholders KW - 2007 KW - Information Systems KW - Job Performance KW - Ownership KW - Personnel Evaluation KW - Satisfaction KW - 2007 DO - 10.1016/j.im.2006.12.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-09131-006&site=ehost-live&scope=site UR - jjiang@bus.ucf.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Zhdanov, B. V. AU - Ehrenreich, T. AU - Knize, R. J. T1 - Narrowband external cavity laser diode array. JO - Electronics Letters JF - Electronics Letters Y1 - 2007/02/15/ VL - 43 IS - 4 M3 - Article SP - 221 EP - 222 SN - 00135194 AB - A laser diode array line narrowing using an external cavity with a holographic grating is demonstrated. A linewidth of 11 GHz is obtained at an operating wavelength of 852 nm with an output power of about 10 W. Narrow linewidth high-power diode arrays can be used to pump alkali lasers and to produce spin polarised noble gases. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - DIODES KW - NONLINEAR optics KW - OPTOELECTRONIC devices KW - LIGHT sources KW - DIFFRACTION gratings N1 - Accession Number: 24029877; Zhdanov, B. V. 1; Email Address: boris.zhdanov.ctr@usafa.af.mil; Ehrenreich, T. 1; Knize, R. J. 1; Affiliations: 1: Department of Physics, US Air Force Academy, 2354 Fairchild Drive, Ste. 2A31, USAF Academy, CO 80840, USA; Issue Info: 2/15/2007, Vol. 43 Issue 4, p221; Subject Term: LASERS; Subject Term: DIODES; Subject Term: NONLINEAR optics; Subject Term: OPTOELECTRONIC devices; Subject Term: LIGHT sources; Subject Term: DIFFRACTION gratings; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 2p; Illustrations: 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1049/el:20073302 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=24029877&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Diltz, Robert A. AU - Marolla, Theodore V. AU - Henley, Michael V. AU - Li, Lixiong T1 - Reverse osmosis processing of organic model compounds and fermentation broths JO - Bioresource Technology JF - Bioresource Technology Y1 - 2007/02// VL - 98 IS - 3 M3 - Article SP - 686 EP - 695 SN - 09608524 AB - Abstract: Post-treatment of an anaerobic fermentation broth was evaluated using a 150gal/day, single cartridge prototype reverse osmosis (RO) system. Baseline tests were conducted at 25°C using six organic model compounds representing key species found in the fermentation broth: ethanol, butanol, acetic acid, oxalic acid, lactic acid, and butyric acid. Correlations of the rejection and recovery efficiencies for these organic species, individually and in simulated mixtures, were obtained as a function of feed pressure with and without recirculation of the retentate. The actual fermentation broth obtained from a continuous-flow biohydrogen process was treated by the RO system under the operating conditions similar to those used in the baseline tests, resulting in greater than 95% removal of total organic carbon. These results are encouraging and useful for further studies on the feasibility of incorporating the RO technology into an integrated and field deployable wastewater management and water recovery system. [Copyright &y& Elsevier] AB - Copyright of Bioresource Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Fermentation KW - Alcohol KW - Osmosis KW - Fluids KW - Biohydrogen KW - Fermentation broth KW - Reverse osmosis KW - Waste management KW - Water reclamation N1 - Accession Number: 22393066; Diltz, Robert A. 1; Marolla, Theodore V. 2; Henley, Michael V. 1; Li, Lixiong 2; Email Address: lli@ara.com; Affiliations: 1: Air Force Research Laboratory, Tyndall Air Force Base, FL 32403, USA; 2: Applied Research Associates, Inc., 430 West 5th Street, Suite 700, Panama City, FL 32401, USA; Issue Info: Feb2007, Vol. 98 Issue 3, p686; Thesaurus Term: Fermentation; Thesaurus Term: Alcohol; Subject Term: Osmosis; Subject Term: Fluids; Author-Supplied Keyword: Biohydrogen; Author-Supplied Keyword: Fermentation broth; Author-Supplied Keyword: Reverse osmosis; Author-Supplied Keyword: Waste management; Author-Supplied Keyword: Water reclamation; NAICS/Industry Codes: 325193 Ethyl Alcohol Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.biortech.2006.01.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=22393066&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Avashia, Swati B. AU - Riggins, W. S. AU - Lindley, Connie AU - Hoffmaster, Alex AU - Drumgoole, Rahsaan AU - Nekomoto, Trudi AU - Jackson, Paul J. AU - Hill, Karen K. AU - Williams, Karen AU - Lehman, Lulu AU - Libal, Melissa C. AU - Wilkins, Patricia P. AU - Alexander, James AU - Tvaryanas, Anthony AU - Betz, Tom T1 - Fatal Pneumonia among Metalworkers Due to Inhalation Exposure to Bacillus cereus Containing Bacillus anthracis Toxin Genes. JO - Clinical Infectious Diseases JF - Clinical Infectious Diseases Y1 - 2007/02//2/1/2007 VL - 44 IS - 3 M3 - Article SP - 414 EP - 416 SN - 10584838 AB - Bacillus cereus pneumonia is unusual in nonimmunocompromised hosts. We describe fatal cases in 2 metalworkers and the associated investigation. Anthrax toxin genes were identified in B. cereus isolates from both patients using polymerase chain reaction. Finding anthrax toxin genes in non-Bacillus anthracis isolates has, to our knowledge, only been reported once previously. [ABSTRACT FROM AUTHOR] AB - Copyright of Clinical Infectious Diseases is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Bacillus anthracis KW - Bacterial diseases KW - Industrial safety KW - Bacillus cereus KW - Employee health promotion KW - Lung diseases N1 - Accession Number: 23756263; Avashia, Swati B. 1,2,3; Email Address: sbavashia@sbcglobal.net; Riggins, W. S. 4; Lindley, Connie 5; Hoffmaster, Alex 2; Drumgoole, Rahsaan 3; Nekomoto, Trudi 4; Jackson, Paul J. 6; Hill, Karen K. 7; Williams, Karen 3; Lehman, Lulu 4; Libal, Melissa C. 8; Wilkins, Patricia P. 2; Alexander, James 5; Tvaryanas, Anthony 9; Betz, Tom 3; Affiliations: 1: Epidemic Intelligence Service, Atlanta, Georgia; 2: Centers for Disease Control and Prevention, Atlanta, Georgia; 3: Texas Department of State Health Services, Austin; 4: Texas Department of State Health Services; 5: Texas Department of State Health Services, Canyon; 6: Lawrence Livermore National Laboratory, Livermore, California; 7: Los Alamos National Laboratory, Los Alamos, New Mexico; 8: Texas A&M University, College Station, Texas; 9: United States Air Force, San Antonio; Issue Info: 2/1/2007, Vol. 44 Issue 3, p414; Thesaurus Term: Bacillus anthracis; Thesaurus Term: Bacterial diseases; Thesaurus Term: Industrial safety; Subject Term: Bacillus cereus; Subject Term: Employee health promotion; Subject Term: Lung diseases; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=23756263&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Register, Wayne T1 - Contract Management in a Deployed Environment. JO - Contract Management JF - Contract Management Y1 - 2007/02// VL - 47 IS - 2 M3 - Article SP - 12 EP - 18 SN - 01903063 AB - The article focuses on issues and topics related to contract management in a deployed environment. The workload and challenges presented in a deployed setting were incredible. However, this can be overcome by focusing upon basic fundamentals. In this article, the author presents a roadmap for navigating through the challenges faced when rebuilding one's contracting operation from the ground up. KW - MANAGEMENT by objectives KW - DEFENSE contracts KW - ARMED Forces -- Appropriations & expenditures KW - CONTRACTORS KW - MANAGEMENT styles KW - STRATEGIC planning N1 - Accession Number: 24042529; Register, Wayne 1; Affiliations: 1: Chief, Munitions Contracting Division, U.S. Air Force Research Laboratory, Eglin AFB, Florida; Issue Info: Feb2007, Vol. 47 Issue 2, p12; Thesaurus Term: MANAGEMENT by objectives; Thesaurus Term: DEFENSE contracts; Thesaurus Term: ARMED Forces -- Appropriations & expenditures; Thesaurus Term: CONTRACTORS; Thesaurus Term: MANAGEMENT styles; Thesaurus Term: STRATEGIC planning; Number of Pages: 6p; Illustrations: 1 Color Photograph, 1 Chart; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=24042529&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Amos, Benjamin K. AU - Christ, John A. AU - Abriola, Linda M. AU - Pennell, Kurt D. AU - Löffler, Frank E. T1 - Experimental Evaluation and Mathematical Modeling of Microbially Enhanced Tetrachioroethene (PCE) Dissolution. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2007/02//2/1/2007 VL - 41 IS - 3 M3 - Article SP - 963 EP - 970 SN - 0013936X AB - Experiments to assess metabolic reductive dechlorination (chlororespiration) at high concentration levels consistent with the presence of free-phase tetrachloroethene (PCE) were performed using three PCE-to-cis-1,2-dichloroethene (cis-DCE) dechlorinating pure cultures (Sulfurospirillum multivorans, Desulfuromonas michiganensis strain BB1, and Geobacter lovleyi strain SZ) and Desulfitobacterium sp. strain Viet1, a PCE-to-trichloroethene (TCE) dechlorinating isolate. Despite recent evidence suggesting bacterial PCE-to-cis-DCE dechlorination occurs at or near PCE saturation (0.9–1.2 mM), all cultures tested ceased dechlorinating at ∼0.54 mM PCE. In the presence of PCE dense nonaqueous phase liquid (DNAPL), strains BB1 and SZ initially dechlorinated, but TCE and cis-DCE production ceased when aqueous PCE concentrations reached inhibitory levels. For S. multivorans, dechlorination proceeded at a rate sufficient to maintain PCE concentrations below inhibitory levels, resulting in continuous cis-DCE production and complete dissolution of the PCE DNAPL A novel mathematical model, which accounts for loss of dechlorinating activity at inhibitory PCE concentrations, was developed to simultaneously describe PCE-DNAPL dissolution and reductive dechlorination kinetics. The model predicted that conditions corresponding to a bioavailability number (Bn) less than 1.25 × 10-2 will lead to dissolution enhancement with the tested cultures, while conditions corresponding to a Bn greater than this threshold value can result in accumulation of PCE to inhibitory dissolved-phase levels, limiting PCE transformation and dissolution enhancement. These results suggest that microorganisms incapable of dechlorinating at high PCE concentrations can enhance the dissolution and transformation of PCE from free-phase DNAPL. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Bioavailability KW - Dense nonaqueous phase liquids KW - Mathematical models KW - Chemical inhibitors KW - Simulation methods & models KW - Biochemical toxicology KW - Dynamics KW - Saturation vapor pressure KW - Biochemistry N1 - Accession Number: 23993170; Amos, Benjamin K. 1; Christ, John A. 2; Abriola, Linda M. 3; Pennell, Kurt D. 1,4; Löffler, Frank E. 1,5; Email Address: frank.loeffler@ce.gatech.edu; Affiliations: 1: School of Civil and Environmental Engineering, 311 Ferst Drive, Atlanta, Georgia 30332-0512; 2: Department of Civil and Environmental Engineering, United States Air Force Academy, 2343 Fairchild Drive, Suite 6J-159, USAF Academy, Colorado 80840-6236; 3: Department of Civil and Environmental Engineering, Tufts University, 200 College Avenue, 113 Anderson Hall, Medford, Massachusetts 01255; 4: Department of Neurology, Emory University School of Medicine, 615 Michael Street, Atlanta, Georgia 30322; 5: School of Biology, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, Georgia 30332-0512; Issue Info: 2/1/2007, Vol. 41 Issue 3, p963; Thesaurus Term: Bioavailability; Thesaurus Term: Dense nonaqueous phase liquids; Thesaurus Term: Mathematical models; Thesaurus Term: Chemical inhibitors; Thesaurus Term: Simulation methods & models; Thesaurus Term: Biochemical toxicology; Subject Term: Dynamics; Subject Term: Saturation vapor pressure; Subject Term: Biochemistry; Number of Pages: 8p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=23993170&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Bell, Patrick J. AU - Hoivik, Nils D. AU - Saravanan, R. A. AU - Ehsan, Negar AU - Bright, Victor M. AU - Popović, Zoya T1 - Flip-Chip-Assembled Air-Suspended Inductor. JO - IEEE Transactions on Advanced Packaging JF - IEEE Transactions on Advanced Packaging Y1 - 2007/02// VL - 30 IS - 1 M3 - Article SP - 148 EP - 154 SN - 15213323 AB - This paper discusses high-performance planar suspended inductors for hybrid integration with microwave circuits. The inductors are fabricated using a silicon surface micromachining foundry process and assembled using flip-chip bonding. The silicon substrate is removed, leaving a metal inductor suspended 60 µm above the microwave substrate, thus reducing the parasitic capacitance and loss. Various rectangular, octagonal, and circular inductor geometries with one to five windings are designed with inductance values between 0.65 and 16 nH to demonstrate the flexibility of this technique. Measured self-resonant frequencies are between 5 and 34.8 GHz, with quality factors from 45 to 100. Equivalent circuits extracted from measurement for each inductor type show good agreement with measured impedance and full-wave simulations over frequency. The dc current handling limit is 200 mA. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Advanced Packaging is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTROMECHANICAL systems KW - ELECTROMECHANICAL devices KW - ELECTRICAL engineering KW - ELECTRODYNAMICS KW - MECHANICAL engineering KW - QUALITY factor meters KW - ELECTRIC apparatus & appliances KW - RADIO frequency KW - FREQUENCIES of oscillating systems KW - RADIO measurements KW - Bias-tee KW - hybrid circuit KW - micromachined KW - quality factor KW - radio frequency (RF) choke KW - self-resonant frequency N1 - Accession Number: 24102009; Bell, Patrick J. 1; Email Address: pbell@ieee.org; Hoivik, Nils D. 1,2; Email Address: hoivik@us.ibm.com; Saravanan, R. A. 3,4; Ehsan, Negar 1; Bright, Victor M. 1; Email Address: Victor.Bright@colorado.edu; Popović, Zoya 1; Email Address: Zoya.Popovic@colorado.edu; Affiliations: 1: University of Colorado at Boulder, Boulder, CO 80309 USA; 2: IBM T. J. Watson Research Center, Yorktown Heights, NY 10598 USA; 3: University of Colorado at Boulder; 4: United States Air Force Academy, USAFA, CO 80840 USA; Issue Info: Feb2007, Vol. 30 Issue 1, p148; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: ELECTROMECHANICAL devices; Subject Term: ELECTRICAL engineering; Subject Term: ELECTRODYNAMICS; Subject Term: MECHANICAL engineering; Subject Term: QUALITY factor meters; Subject Term: ELECTRIC apparatus & appliances; Subject Term: RADIO frequency; Subject Term: FREQUENCIES of oscillating systems; Subject Term: RADIO measurements; Author-Supplied Keyword: Bias-tee; Author-Supplied Keyword: hybrid circuit; Author-Supplied Keyword: micromachined; Author-Supplied Keyword: quality factor; Author-Supplied Keyword: radio frequency (RF) choke; Author-Supplied Keyword: self-resonant frequency; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; NAICS/Industry Codes: 811412 Appliance Repair and Maintenance; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 335990 All other electrical equipment and component manufacturing; NAICS/Industry Codes: 541330 Engineering Services; NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; NAICS/Industry Codes: 334514 Totalizing Fluid Meter and Counting Device Manufacturing; NAICS/Industry Codes: 334512 Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334290 Other Communications Equipment Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 9p; Illustrations: 8 Diagrams, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1109/TADVP.2006.890227 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=24102009&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Grover, Rohan AU - Pados, Dimitris A. AU - Medley, Michael J. T1 - Subspace Direction Finding With an Auxiliary-Vector Basis. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing J1 - IEEE Transactions on Signal Processing PY - 2007/02// Y1 - 2007/02// VL - 55 IS - 2 M3 - Article SP - 758 EP - 763 SN - 1053587X AB - We develop a new subspace direction-of-arrival (DOA) estimation procedure that utilizes a noneigenvector basis. Computation of the basis is carried out by a modified version of the orthogonal auxiliary-vector (AV) filtering algorithm. The procedure starts with the linear transformation of the array response scanning vector by the input autocorrelation matrix. Then, successive orthogonal maximum cross-correlation auxiliary vectors are calculated to form a basis for the scanner-extended signal subspace. As a performance evaluation example, our studies for uncorrelated sources demonstrate a gain in the order of 15 dB over MUSIC, 7 dB over ESPRIT, and 3 dB over the grid-search maximum likelihood DOA estimator at probability of resolution 0.9 with a ten-element array and reasonably small observation data records. Results for correlated sources are reported as well. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORRELATION (Statistics) KW - PROBABILITY theory KW - ALGORITHMS KW - DIGITAL filters (Mathematics) KW - EIGENVECTORS N1 - Accession Number: 23964940; Source Information: Feb2007, Vol. 55 Issue 2, p758; Subject Term: CORRELATION (Statistics); Subject Term: PROBABILITY theory; Subject Term: ALGORITHMS; Subject Term: DIGITAL filters (Mathematics); Subject Term: EIGENVECTORS; Subject Term: ; Number of Pages: 6p; ; Illustrations: 4 Graphs; ; Document Type: Article; L3 - 10.1109/TSP.2006.88577I UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=23964940&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - He, Zhongqi AU - Parales, Rebecca AU - Spain, Jim AU - Johnson, Glenn T1 - Novel organization of catechol meta pathway genes in the nitrobenzene degrader Comamonas sp. JS765 and its evolutionary implication. JO - Journal of Industrial Microbiology & Biotechnology JF - Journal of Industrial Microbiology & Biotechnology Y1 - 2007/02// VL - 34 IS - 2 M3 - Article SP - 99 EP - 104 PB - Springer Science & Business Media B.V. SN - 13675435 AB - The catechol meta cleavage pathway is one of the central metabolic pathways for the degradation of aromatic compounds. A novel organization of the pathway genes, different from that of classical soil microorganisms, has been observed in Sphingomonas sp HV3 and Pseudomonas sp. DJ77. In a Comamonas sp. JS765, cdoE encoding catechol 2,3-dioxygenase shares a common ancestry only with tdnC of a Pseudomonas putida strain, while codG encoding 2-hydroxymuconic semialdehyde dehydrogenase shows a higher degree of similarity to those genes in classical bacteria. Located between cdoE and cdoG are several putative genes, whose functions are unknown. These genes are not found in meta pathway operons of other microorganisms with the exception of cdoX2, which is similar to cmpX in strain HV3. Therefore, the gene cluster in JS765 reveals a third type of gene organization of the meta pathway. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Industrial Microbiology & Biotechnology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Catechol KW - Nitrobenzene KW - Aromatic compounds KW - Microbiology KW - Microorganisms KW - Genes KW - Dehydrogenase KW - Dioxygenase KW - Hydroxymuconic semialdehyde KW - meta-Pathway N1 - Accession Number: 23729685; He, Zhongqi 1; Email Address: Zhongqi.He@ars.usda.gov; Parales, Rebecca 2; Spain, Jim 3; Johnson, Glenn 4; Affiliations: 1: USDA-ARS, New England Plant, Soil, and Water Laboratory , Orono 04469 USA; 2: Section of Microbiology , University of California , Davis 95616 USA; 3: Environmental Engineering Program , Georgia Institute of Technology , Atlanta 30332 USA; 4: Air Force Research Laboratory , Tyndall Air Force Base 32403 USA; Issue Info: Feb2007, Vol. 34 Issue 2, p99; Thesaurus Term: Catechol; Thesaurus Term: Nitrobenzene; Thesaurus Term: Aromatic compounds; Thesaurus Term: Microbiology; Thesaurus Term: Microorganisms; Subject Term: Genes; Author-Supplied Keyword: Dehydrogenase; Author-Supplied Keyword: Dioxygenase; Author-Supplied Keyword: Hydroxymuconic semialdehyde; Author-Supplied Keyword: meta-Pathway; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1007/s10295-006-0170-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=23729685&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 106169062 T1 - High-intensity acoustics for military nonlethal applications: a lack of useful systems. AU - Jauchem JR AU - Cook MC Y1 - 2007/02// N1 - Accession Number: 106169062. Language: English. Entry Date: 20071012. Revision Date: 20150711. Publication Type: Journal Article; review. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 2984771R. KW - Acoustics -- Equipment and Supplies KW - Blast Injuries -- Etiology KW - Hearing -- Radiation Effects KW - Military Personnel KW - Radiation Injuries -- Etiology KW - War KW - Animals KW - Sound -- Adverse Effects KW - World Health SP - 182 EP - 189 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 172 IS - 2 CY - Bethesda, Maryland PB - AMSUS AB - There have been many previous claims of nonlethal acoustic weapon effects, mostly in the popular rather than the scientific literature. Anecdotal reports of extraordinary effects can make meaningful assessment and review of this area very difficult. Acoustics research has shown that the nonlethal weapon capabilities of audible sound generators have been grossly overstated. Although high-intensity infrasound significantly disrupted animal behavior in some experiments, the generation of such energy in a volume large enough to be of practical use is unlikely because of basic physical principles. On the basis of experimentation completed to date at a number of institutions, it seems unlikely that high-intensity acoustic energy in the audible, infrasonic, or low-frequency range can provide a device suitable for use as a nonlethal weapon. SN - 0026-4075 AD - U.S. Air Force Research Laboratory, Human Effectiveness Directorate, Directed Energy Bioeffeets Division, Brooks City-Base, San Antonio, TX 78235-5147 U2 - PMID: 17357774. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106169062&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Jauchem, James R. AU - Cook, Michael C. T1 - High-Intensity Acoustics for Military Nonlethal Applications: A Lack of Useful Systems. JO - Military Medicine JF - Military Medicine Y1 - 2007/02// VL - 172 IS - 2 M3 - Article SP - 182 EP - 189 PB - AMSUS SN - 00264075 AB - There have been many previous claims of nonlethal acoustic weapon effects, mostly in the popular rather than the scientific literature. Anecdotal reports of extraordinary effects can make meaningful assessment and review of this area very difficult. Acoustics research has shown that the nonlethal weapon capabilities of audible sound generators have been grossly overstated. Although high-intensity infrasound significantly disrupted animal behavior in some experiments, the generation of such energy in a volume large enough to be of practical use is unlikely because of basic physical principles. On the basis of experimentation completed to date at a number of institutions, it seems unlikely that high-intensity acoustic energy in the audible, infrasonic, or low-frequency range can provide a device suitable for use as a nonlethal weapon. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLETHAL weapons KW - WEAPONS KW - ANIMAL behavior KW - SOUND KW - LOUDNESS N1 - Accession Number: 24052515; Jauchem, James R. 1; Cook, Michael C. 1; Source Information: Feb2007, Vol. 172 Issue 2, p182; Subject: NONLETHAL weapons; Subject: WEAPONS; Subject: ANIMAL behavior; Subject: SOUND; Subject: LOUDNESS; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=24052515&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 2007-01429-005 AN - 2007-01429-005 AU - Vidulich, Michael A. AU - Tsang, Pamela S. T1 - Methodological and Theoretical Concerns in Multitask Performance: A Critique of Boles, Bursk, Phillips, and Perdelwitz. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2007/02// VL - 49 IS - 1 SP - 46 EP - 49 CY - US PB - Human Factors & Ergonomics Society SN - 0018-7208 SN - 1547-8181 AD - Vidulich, Michael A., AFRL/HEC, 2255 H St., Wright-Patterson Air Force Base, OH, US, 45433-7022 N1 - Accession Number: 2007-01429-005. PMID: 17315842 Partial author list: First Author & Affiliation: Vidulich, Michael A.; Warfighter Interface Division, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Other Publishers: Sage Publications. Release Date: 20070212. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Comment/Reply. Language: English. Major Descriptor: Cognitive Processes; Questionnaires; Task Analysis; Test Validity. Classification: Tests & Testing (2220); Cognitive Processes (2340). Population: Human (10). References Available: Y. Page Count: 4. Issue Publication Date: Feb, 2007. AB - Comments on an article by David B. Boles et al. (see record [rid]2007-01429-004[/rid]). The authors purported to assess the validity of the Multiple Resources Questionnaire (MRQ) in predicting dual-task performance. As a relatively easily administered rating scale, if validated, the MRQ would constitute a valuable addition to the system designers' tool set for assessing the cognitive suitability of human-machine interfaces in complex environments. The issue with the experimental tasks used by the authors boils down to whether they were designed to induce resource competition for multiple resources. The key concern is the simultaneity of resource demands--a necessary condition for inferring resource competition. A major methodological concern was that the MRQ tool was not tested in an environment amenable to simultaneous task processing and thereby to tests of resource structures. The methodological concerns do not have anything to do with whether sequential task processing occurs in the laboratory or in the 'real world.' The concern has to do with the appropriateness of using tasks and methods that promote sequential processing for evaluating tools that are purportedly designed to assess resource competition. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - dual task performance KW - Multiple Resources Questionnaire KW - test validity KW - mental processes KW - workload measure KW - 2007 KW - Cognitive Processes KW - Questionnaires KW - Task Analysis KW - Test Validity KW - 2007 DO - 10.1518/001872007779598046 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-01429-005&site=ehost-live&scope=site UR - michael.vidulich@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-03720-004 AN - 2007-03720-004 AU - Silva-Smlth, Amy L. AU - Theune, Thomas W. AU - Spaid, Penny E. T1 - Primary support persons for individuals who are visually impaired: Who they are and the support they provide. JF - Journal of Visual Impairment & Blindness JO - Journal of Visual Impairment & Blindness JA - J Vis Impair Blind Y1 - 2007/02// VL - 101 IS - 2 SP - 113 EP - 118 CY - US PB - American Foundation for the Blind SN - 0145-482X SN - 1559-1476 AD - Silva-Smlth, Amy L., Beth-El College of Nursing and Health Sciences, University of Colorado at Colorado Springs, 1420 Austin Bluffs Parkway, P.O. Box 7150, Colorado Springs, CO, US, 80933-7150 N1 - Accession Number: 2007-03720-004. Partial author list: First Author & Affiliation: Silva-Smlth, Amy L.; Beth-El College of Nursing and Health Sciences, University of Colorado at Colorado Springs, Colorado Springs, CO, US. Release Date: 20070618. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Caregiver Burden; Caregivers; Chronic Illness; Experiences (Events); Vision Disorders. Classification: Vision & Hearing & Sensory Disorders (3299). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360); Aged (65 yrs & older) (380); Very Old (85 yrs & older) (390). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 6. Issue Publication Date: Feb, 2007. AB - The study reported here sought to provide some preliminary data on the experiences of primary support persons of individuals who are visually impaired. A purposive, consecutive sample of 28 adults who reported being the primary support persons for individuals who were visually impaired was recruited for the study through a low vision services clinic. The visually impaired individuals had other chronic health problems; however, their primary support persons were recruited if visual impairment was reported to be the most disabling or burdensome condition requiring support. Criteria for inclusion in the study were being at least 18 years old, 57% were female. In summary, the main support activities provided by the primary support persons included instrumental support, such as transportation, help with administrative tasks, and shopping and meal preparation, and the participants' Caregiver Reaction Assessment scores revealed that they felt mild levels of burden in their role. Further study is needed with the primary support persons of individuals who are visually impaired to focus assessments and interventions appropriately and to assist policy makers in making informed public policy decisions regarding transportation and other community services that are available for individuals who are visually impaired. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - primary support persons KW - visually impaired individuals KW - chronic health problems KW - experiences KW - burden KW - 2007 KW - Caregiver Burden KW - Caregivers KW - Chronic Illness KW - Experiences (Events) KW - Vision Disorders KW - 2007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-03720-004&site=ehost-live&scope=site UR - spaid@usafa.af.mil UR - twtheune@prodigy.net UR - asilvasm@uccs.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Battula, Arvind AU - Yalin Lu AU - Knize, R. J. AU - Reinhardt, Kitt AU - Shaochen Chen T1 - Extraordinary Transmission and Enhanced Emission with Metallic Gratings Having Converging-Diverging Channels. JO - Active & Passive Electronic Components JF - Active & Passive Electronic Components Y1 - 2007/01/02/ VL - 2007 M3 - Article SP - 1 EP - 8 PB - Hindawi Publishing Corporation SN - 08827516 AB - Transmission metallic gratings having the shape of converging-diverging channel (CDC) give an extra degree of freedom to exhibit enhanced transmission resonances. By varying the gap size at the throat of CDC, the spectral locations of the transmission resonance bands can be shifted close to each other and have high transmittance in a very narrow energy band. Hence, the CDC shape metallic gratings can lead to almost perfect transmittance for any desired wavelength by carefully optimizing the metallic material, gap at the throat of CDC, and grating parameters. In addition, a cavity surrounded by the CDC shaped metallic grating and a one-dimensional (1D) photonic crystal (PhC) can lead to an enhanced emission with properties similar to a laser. The large coherence length of the emission is achieved by exploiting the coherence properties of the surface waves on the gratings and PhC. The new multilayer structure can attain the spectral and directional control of emission with only p-polarization. The resonance condition inside the cavity is extremely sensitive to the wavelength, which would then lead to high emission in a very narrow wavelength band. Such simple 1D multilayer structure should be easy to fabricate and have applications in photonic circuits, thermophotovoltaics, and potentially in energy efficient incandescent sources. [ABSTRACT FROM AUTHOR] AB - Copyright of Active & Passive Electronic Components is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANALYSIS of variance KW - FLUID dynamics KW - ELECTRONIC circuit design KW - RESONATORS KW - SPECTRUM analysis KW - TERAHERTZ technology KW - PLASMONS (Physics) N1 - Accession Number: 36865572; Battula, Arvind 1; Yalin Lu 2; Knize, R. J. 2; Reinhardt, Kitt 3; Shaochen Chen 1; Affiliations: 1: Department of Mechanical Engineering, Center for Nano and Molecular Science and Technology, University of Texas, Austin, TX 78712, USA; 2: Physics Department, Laser Optics Research Center, USAF Academy, CO 80840, USA; 3: Air Force Research Laboratory, AFOSR/NE, 875 North Randolph Street, Suite 326, Arlington, VA 22203, USA; Issue Info: Jan2007, Vol. 2007, Special section p1; Thesaurus Term: ANALYSIS of variance; Subject Term: FLUID dynamics; Subject Term: ELECTRONIC circuit design; Subject Term: RESONATORS; Subject Term: SPECTRUM analysis; Subject Term: TERAHERTZ technology; Subject Term: PLASMONS (Physics); Number of Pages: 8p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1155/2007/24084 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=36865572&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Yalin Lu AU - Weili Zhang AU - Min Qiu T1 - Metamaterials, Plasmonics, and THz Frequency Photonic Components. JO - Active & Passive Electronic Components JF - Active & Passive Electronic Components Y1 - 2007/01/02/ VL - 2007 M3 - Article SP - 1 EP - 2 PB - Hindawi Publishing Corporation SN - 08827516 AB - The article discusses various reports published within the issue including plasmonics, manipulating light at the subwavelength scale, of microstructure variations on macroscopic terahertz metafilm properties, and compact optical waveguides based on hybrid index and surface-plasmon-polariton guidance mechanisms. KW - TERAHERTZ technology KW - OPTICAL waveguides KW - PLASMONS (Physics) KW - POLARITONS N1 - Accession Number: 36865568; Yalin Lu 1; Weili Zhang 2; Min Qiu 3; Affiliations: 1: Department of Physics, US Air Force Academy, Colorado Springs, CO 80840, USA; 2: School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, OK 74078-5032, USA; 3: Department of Microelectronics and Applied Physics, Royal Institute of Technology (KTH), Electrum 229, 164 40 Kista, Sweden; Issue Info: Jan2007, Vol. 2007, p1; Subject Term: TERAHERTZ technology; Subject Term: OPTICAL waveguides; Subject Term: PLASMONS (Physics); Subject Term: POLARITONS; Number of Pages: 2p; Document Type: Article L3 - 10.1155/2007/80839 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=36865568&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Gordon, Michael C. AU - Ventura-Braswell, Ada AU - Higby, Kenneth AU - Ward, John A. T1 - Does local anesthesia decrease pain perception in women undergoing amniocentesis? JO - American Journal of Obstetrics & Gynecology JF - American Journal of Obstetrics & Gynecology Y1 - 2007/01// VL - 196 IS - 1 M3 - Article SP - 55 EP - 56 SN - 00029378 AB - In a prospective randomized study of a racially diverse population, administration of local anesthesia before amniocentesis did not alter maternal pain perception. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Obstetrics & Gynecology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOCAL anesthesia KW - PAIN perception KW - AMNIOCENTESIS KW - LIDOCAINE KW - CONDUCTION anesthesia KW - PRENATAL diagnosis KW - AMNIOTIC liquid KW - FETAL diseases -- Diagnosis KW - OBSTETRICS -- Surgery N1 - Accession Number: 23924698; Gordon, Michael C. 1; Ventura-Braswell, Ada 2; Higby, Kenneth 2; Ward, John A. 3; Source Information: Jan2007, Vol. 196 Issue 1, p55; Subject: LOCAL anesthesia; Subject: PAIN perception; Subject: AMNIOCENTESIS; Subject: LIDOCAINE; Subject: CONDUCTION anesthesia; Subject: PRENATAL diagnosis; Subject: AMNIOTIC liquid; Subject: FETAL diseases -- Diagnosis; Subject: OBSTETRICS -- Surgery; Number of Pages: 2p; Illustrations: 1 Chart; Document Type: Article L3 - 10.1016/j.ajog.2006.08.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=23924698&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Ball, Jerry T. T1 - A bi-polar theory of nominal and clause structure and function. JO - Annual Review of Cognitive Linguistics JF - Annual Review of Cognitive Linguistics Y1 - 2007/01// VL - 5 IS - 1 M3 - Article SP - 27 EP - 54 PB - John Benjamins Publishing Co. SN - 15720268 AB - A bi-polar theory of the structure and function of nominals and clauses is presented in which a specifier, functioning as a referential pole, and a head, functioning as a relational pole, combine to form a referring expression. The theory applies to both object referring expressions, in the case of nominals, and situation referring expressions, in the case of clauses. The bi-polar theory is contrasted with X-Bar Theory — a uni-polar theory in which the head uniquely determines the type of the larger expression in which it occurs. Uni-polar theories adopt a strong notion of endocentricity, which is rejected in the bi-polar theory, where both the specifier and the head make significant and meaningful contributions to the larger expressions in which they occur. The bi-polar theory is also contrasted with Langacker’s conception of the basic structure and function of nominals and clauses. [ABSTRACT FROM AUTHOR] AB - Copyright of Annual Review of Cognitive Linguistics is the property of John Benjamins Publishing Co. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Nominals (Grammar) KW - Clauses (Grammar) KW - Expression KW - Linguistics KW - Theory KW - clause KW - function KW - head KW - meaning KW - nominal KW - referential pole KW - referring expression KW - relational pole KW - specifier KW - structure N1 - Accession Number: 27660324; Ball, Jerry T. 1; Affiliations: 1: Air Force Research Laboratory, Mesa, Arizona; Issue Info: 2007, Vol. 5 Issue 1, p27; Thesaurus Term: Nominals (Grammar); Thesaurus Term: Clauses (Grammar); Thesaurus Term: Expression; Thesaurus Term: Linguistics; Subject Term: Theory; Author-Supplied Keyword: clause; Author-Supplied Keyword: function; Author-Supplied Keyword: head; Author-Supplied Keyword: meaning; Author-Supplied Keyword: nominal; Author-Supplied Keyword: referential pole; Author-Supplied Keyword: referring expression; Author-Supplied Keyword: relational pole; Author-Supplied Keyword: specifier; Author-Supplied Keyword: structure; Number of Pages: 28p; Illustrations: 1 Chart; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=27660324&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - CHAP ID - 2007-07684-005 AN - 2007-07684-005 AU - Ree, Malcolm James AU - Carretta, Thomas R. ED - Whetzel, Deborah L. ED - Wheaton, George R. ED - Whetzel, Deborah L., (Ed) ED - Wheaton, George R., (Ed) T1 - Tests of cognitive ability. T2 - Applied measurement: Industrial psychology in human resources management. Y1 - 2007/// SP - 131 EP - 159 CY - New York, NY PB - Taylor & Francis Group/Lawrence Erlbaum Associates SN - 0-8058-5867-9 SN - 978-0-8058-5867-9 N1 - Accession Number: 2007-07684-005. Partial author list: First Author & Affiliation: Ree, Malcolm James; Department of Leadership Studies, Our Lady of the Lake University, San Antonio, TX, US. Release Date: 20080901. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-8058-5867-9, Hardcover; 978-0-8058-5867-9, Hardcover. Language: English. Major Descriptor: Cognitive Ability; Psychometrics; Test Construction. Minor Descriptor: Test Reliability; Test Validity. Classification: Occupational & Employment Testing (2228). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 29. AB - This chapter consists of six sections. The first section briefly reviews the historical foundation of the concept of cognitive ability and early attempts to measure it. The second section reviews modern theories of the structure of cognitive ability and the emergence of the concept of general cognitive ability. Section three introduces the concepts of specific knowledge, skills, abilities, and other characteristics. Section four discusses psychometric characteristics of tests including reliability, validity, and subgroup differences. The fifth section reviews the issues to be considered when deciding whether to choose from among commercially available tests or develop a test. Example questions to help in test construction are provided. The final section contains a general summary. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cognitive ability KW - general cognitive ability KW - specific knowledge KW - psychometric tests KW - reliability KW - validity KW - subgroup differences KW - test construction KW - 2007 KW - Cognitive Ability KW - Psychometrics KW - Test Construction KW - Test Reliability KW - Test Validity KW - 2007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-07684-005&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Iarve, E.V. AU - Kim, R. AU - Mollenhauer, D. T1 - Three-dimensional stress analysis and Weibull statistics based strength prediction in open hole composites JO - Composites: Part A, Applied Science & Manufacturing JF - Composites: Part A, Applied Science & Manufacturing Y1 - 2007/01// VL - 38 IS - 1 M3 - Article SP - 174 EP - 185 SN - 1359835X AB - Abstract: The critical failure volume (CFV) method is proposed. CFV is defined as a finite subvolume in a material with general nonuniform stress distribution, which has the highest probability of failure, i.e. loss of load carrying capacity. The evaluation of the probability of failure of the subvolumes is performed based on the lowest stress and thus provides an estimate of the lower bound of the probability of local failure. An algorithm for identifying this region, based on isostress surface parameterization is proposed. It is shown that in the case of material with strength following Weibull weak link statistics such a volume exists and its location and size are defined both by the stress distribution and the scatter of strength. Moreover the probability of failure predicted by using the CFV method was found to be close to that predicted by using traditional Weibull integral method and coincide with it in the case of uniform stress fields and in the limit of zero scatter of strength. Experiments performed on homogeneous epoxy resin plaques with and without holes showed that the predictions bound the experimentally measured open hole strength. The Weibull parameters used for prediction were obtained from testing only unnotched specimens of different dimensions. The effect of the hole size on tensile strength of heterogeneous materials such as quasi-isotropic carbon–epoxy composite laminates was considered next. Fiber failure was the only failure mechanism taken into account and a strain-based failure criterion was used in the form of a two parameter Weibull distribution. The stacking sequence was selected to minimize the effect of stress redistribution due to subcritical damage. Not unexpectedly an up to 30% underprediction of the strength of the laminates with small (2.54mm diameter) holes was observed by using classical Weibull integral method as well as Weibull based CFV method. It was explained by examining the size of the CFV, which appeared to be below Rosen’s ineffective length estimate. The CFV method was modified to account for the presence of a limit scaling size of six ineffective lengths, consistent with recent Monte-Carlo simulations by Landis et al. [Landis CM, Beyerlin IJ, McMeeking RM. Micromechanical simulation of the failure of fiber reinforced composites. Mech Phys Solids 2000;48:621–48] and was able to describe the experimentally observed magnitude of the hole size effect on composite tensile strength in the examined range of 2.54–15.24mm hole diameters. [Copyright &y& Elsevier] AB - Copyright of Composites: Part A, Applied Science & Manufacturing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRESS concentration KW - EPOXY resins KW - STRAINS & stresses (Mechanics) KW - NUMERICAL analysis KW - A. Laminates KW - B. Stress concentrations KW - C. Numerical analysis KW - C. Statistical properties/methods KW - Open hole N1 - Accession Number: 23210501; Iarve, E.V. 1; Email Address: endel.iarve@wpafb.af.mil; Kim, R. 1; Mollenhauer, D. 2; Affiliations: 1: University of Dayton Research Institute, 300 College Park Avenue, Dayton, OH 45469-0168, United States; 2: US Air Force Research Laboratory, AFRL/MLBC, Wright-Patterson AFB, OH 45433-7750, United States; Issue Info: Jan2007, Vol. 38 Issue 1, p174; Subject Term: STRESS concentration; Subject Term: EPOXY resins; Subject Term: STRAINS & stresses (Mechanics); Subject Term: NUMERICAL analysis; Author-Supplied Keyword: A. Laminates; Author-Supplied Keyword: B. Stress concentrations; Author-Supplied Keyword: C. Numerical analysis; Author-Supplied Keyword: C. Statistical properties/methods; Author-Supplied Keyword: Open hole; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.compositesa.2006.01.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=23210501&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 106159861 T1 - An ethical decision-making model for operational psychology. AU - Stephenson JA AU - Staal MA Y1 - 2007/01// N1 - Accession Number: 106159861. Language: English. Entry Date: 20070928. Revision Date: 20150711. Publication Type: Journal Article; case study; review; tables/charts. Journal Subset: Biomedical; Blind Peer Reviewed; Peer Reviewed; USA. NLM UID: 9102086. KW - Decision Making, Ethical KW - Military Services KW - Psychology KW - Accountability KW - Ethics, Professional KW - Human Dignity KW - Human Rights KW - Psychologists KW - Respect KW - Violence KW - War SP - 61 EP - 82 JO - Ethics & Behavior JF - Ethics & Behavior JA - ETHICS BEHAV VL - 17 IS - 1 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - Operational psychology is an emerging subdiscipline that has enhanced the U.S. military's combat capabilities during the Global War on Terrorism. What makes this subdiscipline unique is its use of psychological principles and skills to improve a commander's decision making as it pertains to conducting combat (or related operations). Due to psychology's expanding role in combat support, psychologists are being confronted with challenges that require the application of their professional ethics in areas in which little if any guidance has been provided. Operational psychologists are at the forefront of this expansion. Accordingly, they need a decision model to assist them in this complex dynamic environment. To this end, this article reviews various decision models and ethical frameworks, selects the most appropriate, and then applies it to the challenges faced by operational psychologists. A naturalistic decision model that integrates rational and intuitive elements is recommended. SN - 1050-8422 AD - 421st Air Base Squadron, United States Air Force, United Kingdom. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106159861&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - CHAP ID - 2007-07680-021 AN - 2007-07680-021 AU - Harville, Donald L. AU - Elliott, Linda R. AU - Barnes, Christopher ED - Hoffman, Robert R. ED - Hoffman, Robert R., (Ed) T1 - Analysis of team communication and performance during sustained command-and-control operations. T2 - Expertise out of context: Proceedings of the Sixth International Conference on Naturalistic Decision Making. Y1 - 2007/// SP - 453 EP - 472 CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-5510-6 SN - 978-0-8058-5510-4 SN - 0-8058-5509-2 SN - 978-0-8058-5509-8 N1 - Accession Number: 2007-07680-021. Partial author list: First Author & Affiliation: Harville, Donald L.; Air Force Research Laboratory, Brooks City-Base, TX, US. Release Date: 20080310. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-8058-5510-6, Paperback; 978-0-8058-5510-4, Paperback; 0-8058-5509-2, Hardcover; 978-0-8058-5509-8, Hardcover. Language: English. Conference Information: International Conference on Naturalistic Decision Making, 6th, May, 2003, Pensacola, FL, US. Conference Note: This volume contains papers from the aforementioned conference. Major Descriptor: Communication; Decision Making; Fatigue; Performance; Teams. Minor Descriptor: Analysis; Environment; Military Personnel; Sleep Deprivation. Classification: Group & Interpersonal Processes (3020); Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 20. AB - United States Air Force (USAF) command-and-control (C2) warfighters face increasingly complex and novel environments that represent the essence of Naturalistic Decision Making (NDM): multiple demands for enhanced vigilance, rapid situation assessment, and coordinated adaptive response (Cohen, 1993; Klein, 1993; Mitchell & Beach, 1990; Orasanu & Connolly; 1993; Orasanu & Salas, 1993; Rasmussen, 1993). In tactical C2 situations, the focus is on dynamic battle management and time-critical targeting. Coordination demand is high--reconnaissance and resource allocation depend on close coordination between ground and air forces in a distributed network system of systems. Situations requiring close coordination and adaptive replanning are increasingly prevalent and challenging. There is a need for in-depth study of the effects of fatigue on team performance, based on operational scenarios and participants. As a result, the Fatigue Countermeasures Branch at Brooks City-Base (San Antonio), Texas, initiated a program of research, to identify effects of sleep loss and circadian rhythm on information processing, communication, coordination, and decision making in team-based sustained C2 simulation-based task environments. In this chapter, we describe a baseline study, with a focus on issues related to elicitation and assessment of team communications. We predicted that communication-based measures of information transfer, coordinating behavior, and encouragement would decline with fatigue. Participants were expected to tunnel in, not notice the predicaments of others, not care, and not realize when new bandits arise, or when additional friendly resources are available. These predictions are consistent with findings concerning performance under stress in general (Cannon-Bowers & Salas, 1998; Driskell & Johnston, 1998; Klein, 1996). As a result, they were also expected to be less effective in sequencing activities. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - analysis KW - team communication KW - performance KW - sustained command-and-control operations KW - Air Force KW - Naturalistic Decision Making KW - complex & novel environments KW - fatigue KW - 2007 KW - Communication KW - Decision Making KW - Fatigue KW - Performance KW - Teams KW - Analysis KW - Environment KW - Military Personnel KW - Sleep Deprivation KW - 2007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-07680-021&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP AU - Newman, Alexandra M. AU - Kuchta, Mark AU - Martinez, Michael AD - CO School of Mines AD - CO School of Mines AD - US Air Force Academy A2 - Weintraub, Andres A2 - Romero, Carlos A2 - Bjorndal, Trond A2 - Epstein, Rafael T1 - Long- and Short-Term Production Scheduling at LKAB's Kiruna Mine T2 - Handbook of Operations Research in Natural Resources PB - With the collaboration of Jaime Miranda. International Series in Operations Research and Management Science. New York: Springer Y1 - 2007/// SP - 579 EP - 593 N1 - Accession Number: 1040318; Reviewed Book ISBN: 978-0-387-71814-9; Keywords: Mine; Mines; Publication Type: Collective Volume Article; Update Code: 200905 KW - Mining, Extraction, and Refining: Hydrocarbon Fuels L71 KW - Exhaustible Resources and Economic Development Q32 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=1040318&site=ehost-live&scope=site DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Srinivasan, Rajan AU - Rangaswamy, Muralidhar T1 - Importance Sampling for Characterizing STAP Detectors. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2007/01// VL - 43 IS - 1 M3 - Article SP - 273 EP - 285 SN - 00189251 AB - This paper describes the development of adaptive importance sampling (IS) techniques for estimating false alarm probabilities of detectors that use space-time adaptive processing (STAP) algorithms. Fast simulation using IS methods has been notably successful in the study of conventional constant false alarm rate (CFAR) radar detectors, and in several other applications. The principal objectives here are to examine the viability of using these methods for STAP detectors, develop them into powerful analysis and design algorithms and, in the long term, use them for synthesizing novel detection structures. The adaptive matched filter (AMF) detector has been analyzed successfully using fast simulation. Of two biasing methods considered, one is implemented and shown to yield good results. The important problem of detector threshold determination is also addressed, with matching outcome,. As an illustration of the power of these methods, two variants of the square-law AMF detector that are thought to be robust under heterogeneous clutter conditions have also been successfully investigated. These are the envelope-law and geometric-mean STAP detectors. Their CFAR property is established and performance evaluated. It turns out the variants have detection performances better than those of the AMF detector for training data contaminated by interferers. In summary, the work reported here paves the way for development of advanced estimation techniques that can facilitate design of powerful and robust detection algorithms. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR in speed limit enforcement -- Detection KW - ADAPTIVE signal processing KW - DETECTORS KW - ELECTRONIC systems KW - ELECTRONIC pulse techniques KW - RADIO waves N1 - Accession Number: 25227680; Srinivasan, Rajan 1; Rangaswamy, Muralidhar 2; Email Address: Muralidhar.Rangaswamy@hanscom.af.mil; Affiliations: 1: Telecommunication Engineering Group, University of Twente, PO 217, 7500 AE Enschede, The Netherlands.; 2: Air Force Research Laboratory Sensors Directorate, Hanscom AFB, MA.; Issue Info: Jan2007, Vol. 43 Issue 1, p273; Subject Term: RADAR in speed limit enforcement -- Detection; Subject Term: ADAPTIVE signal processing; Subject Term: DETECTORS; Subject Term: ELECTRONIC systems; Subject Term: ELECTRONIC pulse techniques; Subject Term: RADIO waves; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=25227680&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Linnehan, Robert AU - Brady, David AU - Schindler, John AU - Perlovsky, Leonid AU - Rangaswamy, Muralidhar T1 - On the Design of SAR Apertures using the Cramér-Rao Bound. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2007/01// VL - 43 IS - 1 M3 - Article SP - 344 EP - 355 SN - 00189251 AB - The Cramer-Rao inequality is applied to the likelihood function of the synthetic aperture radar (SAR) scatterer parameter vector to relate the choice of flight path to estimation performance. Estimation error bounds for the scatterer parameter vector (including height) are developed for multi-dimensional synthetic apertures, and quantify the performance enhancement over a limited sector of the image plane relative to standard-aperture single-pass SAR missions. An efficient means for the design and analysis of SAR waveforms and flight paths is proposed using simulated scattering models that are limited in size. Comparison of the error bounds to those for standard-aperture SAR show that estimates of scatterer range and cross-range positions are accurate for multi-dimensional aperture SAR, even with the additional estimator for height. Furthermore, multi-dimensional SAR is shown to address the layover problem. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYNTHETIC aperture radar KW - COHERENT radar KW - IMAGING systems KW - ELECTRONIC systems KW - ELECTRONIC pulse techniques N1 - Accession Number: 25227685; Linnehan, Robert 1; Email Address: robert.linnehan@hanscom.af.mil; Brady, David 2; Schindler, John 3; Perlovsky, Leonid 1; Rangaswamy, Muralidhar 1; Affiliations: 1: Air Force Research Laboratory, Sensors Directorate, 80 Scott Dr., Hanscom AFB, MA 01731-2909.; 2: Dept. of Electrical and Computer Engineering, Northeastern University, Boston, MA.; 3: Anteon Corporation, Hanscom AFB, MA.; Issue Info: Jan2007, Vol. 43 Issue 1, p344; Subject Term: SYNTHETIC aperture radar; Subject Term: COHERENT radar; Subject Term: IMAGING systems; Subject Term: ELECTRONIC systems; Subject Term: ELECTRONIC pulse techniques; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=25227685&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Marsh, Eric D. AU - Reid, James Robert AU - Vasilyev, Vladimir S. T1 - Gold-Plated Micromachined Millimeter-Wave Resonators Based on Rectangular Coaxial Transmission Lines. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques J1 - IEEE Transactions on Microwave Theory & Techniques PY - 2007/01// Y1 - 2007/01// VL - 55 IS - 1 M3 - Article SP - 78 EP - 84 SN - 00189480 AB - Resonators based on microfabricated rectangular coaxial (recta-coax) transmission lines are presented. The resonators were fabricated using a multilayered nickel electroplating process that enables the fabrication of three-dimensional structures. As a method to improve performance, gold was plated on the resonators using an electroless process. A model for predicting the effect of the plating on a resonator quality (Q) factor is presented and verified by measurements. Measured resonators show that the plating can increase the Q factor of nickel resonators by over 50% at frequencies above. 44 GHz. Utilizing gold plating, 50-Ω resonators are demonstrated at 44 and 60 GHz with unloaded Q factors of 213.1 and 242.3, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESONATORS KW - SOUND -- Equipment & supplies KW - MICROMACHINING KW - MILLIMETER astronomy KW - ELECTRIC lines KW - INTERCONNECTED electric utility systems N1 - Accession Number: 23775431; Source Information: Jan2007, Vol. 55 Issue 1, p78; Subject Term: RESONATORS; Subject Term: SOUND -- Equipment & supplies; Subject Term: MICROMACHINING; Subject Term: MILLIMETER astronomy; Subject Term: ELECTRIC lines; Subject Term: INTERCONNECTED electric utility systems; Subject Term: ; Number of Pages: 7p; ; Illustrations: 4 Diagrams, 4 Charts, 5 Graphs; ; Document Type: Article; L3 - 10.1109/TMTT.2006.888947 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=23775431&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - CHAP ID - 2007-08865-002 AN - 2007-08865-002 AU - Gluck, Kevin A. AU - Ball, Jerry T. AU - Krusmark, Michael A. ED - Gray, Wayne D. ED - Gray, Wayne D., (Ed) T1 - Cognitive control in a computational model of the predator pilot. T2 - Integrated models of cognitive systems. T3 - Series on cognitive models and architectures Y1 - 2007/// SP - 13 EP - 28 CY - New York, NY, US PB - Oxford University Press SN - 978-0-19-518919-3 N1 - Accession Number: 2007-08865-002. Partial author list: First Author & Affiliation: Gluck, Kevin A.; Air Force Research Laboratory, Mesa, AZ, US. Release Date: 20070910. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-0-19-518919-3, Hardcover. Language: English. Major Descriptor: Aircraft Pilots; Cognition; Models; Simulation; Cognitive Control. Minor Descriptor: Aircraft; Taxonomies. Classification: Intelligent Systems (4100); Cognitive Processes (2340). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 16. AB - This chapter describes four models of cognitive control in pilots of remotely piloted aircraft. The models vary in the knowledge available to them and in the aircraft maneuvering strategies that control the simulated pilot's interaction with the heads-up display. In the parlance of Gray's cognitive control taxonomy (chapter 1, this volume; see record [rid]2007-08865-001[/rid]), these models are Type 3 (knowledge/strategy) variants. The first two models are successive approximations toward a valid model of expert-level pilot cognitive control. The first model failed because of a naive flight control strategy, and the second succeeded because of an effective flight control strategy that is taught to Air Force pilots. The last two models are investigations of the relative contributions of different major components of our more successful model of pilot cognitive control. This investigation of knowledge and strategy variants produces an anomalous result in relative model performance, which we explore and explain through a sensitivity analysis across a portion of the Type 3 parameter space. The lesson learned is that seemingly innocuous assumptions at the Type 3 level can have large impacts in the performance of models that simulate human cognition in complex, dynamic environments. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cognitive control KW - computational model KW - human cognition KW - remotely piloted aircraft KW - 2007 KW - Aircraft Pilots KW - Cognition KW - Models KW - Simulation KW - Cognitive Control KW - Aircraft KW - Taxonomies KW - 2007 U1 - Sponsor: Air Force Research Laboratory, Warfighter Readiness Research Division. Recipients: No recipient indicated U1 - Sponsor: Air Force Office of Scientific Research. Grant: 02HE01COR. Recipients: No recipient indicated DO - 10.1093/acprof:oso/9780195189193.003.0002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-08865-002&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2007-08865-017 AN - 2007-08865-017 AU - Gunzelmann, Glenn AU - Gluck, Kevin A. AU - Price, Scott AU - Van Dongen, Hans P. A. AU - Dinges, David F. ED - Gray, Wayne D. ED - Gray, Wayne D., (Ed) T1 - Decreased arousal as a result of sleep deprivation: The unraveling of cognitive control. T2 - Integrated models of cognitive systems. T3 - Series on cognitive models and architectures Y1 - 2007/// SP - 243 EP - 253 CY - New York, NY, US PB - Oxford University Press SN - 978-0-19-518919-3 N1 - Accession Number: 2007-08865-017. Partial author list: First Author & Affiliation: Gunzelmann, Glenn; Air Force Research Laboratory, Mesa, AZ, US. Release Date: 20070910. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 978-0-19-518919-3, Hardcover. Language: English. Major Descriptor: Cognitive Processes; Fatigue; Perceptual Motor Processes; Physiological Arousal; Sleep Deprivation. Minor Descriptor: Models; Cognitive Control. Classification: Cognitive Processes (2340). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 11. AB - This chapter discusses recent efforts at developing mechanisms for capturing the effects of fatigue on human performance. We describe a computational cognitive model, developed in adaptive control of thought-rational (ACT-R), that performs a sustained attentional task called the psychomotor vigilance task (PVT). We use neurobehavioral evidence from research on sleep deprivation, in addition to previous research from within the ACT-R community, to select and to evaluate a mechanism for producing fatigue effects in the model. Fatigue is represented by decrementing a parameter associated with arousal in ACT-R, while also reducing a threshold value in the architecture to capture attempts at compensating for the negative effects of decreased arousal. These parameters are associated with the production utility computation in ACT-R, which controls the selection/execution cycle to determine which production (if any) to execute on each cognitive cycle. In ACT-R, this mechanism is linked to the basal ganglia and the thalamus. In turn, portions of the thalamus show heightened activation in attentional tasks under conditions of sleep deprivation. The model we describe closely captures the performance of human participants on the PVT, as observed in a laboratory experiment involving 88 hours of total sleep deprivation. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - sleep deprivation KW - cognitive control KW - fatigue KW - computational cognitive model KW - psychomotor vigilance task KW - ACT-R KW - decreased arousal KW - 2007 KW - Cognitive Processes KW - Fatigue KW - Perceptual Motor Processes KW - Physiological Arousal KW - Sleep Deprivation KW - Models KW - Cognitive Control KW - 2007 U1 - Sponsor: AFRL, Warfighter Readiness Research Division. Recipients: No recipient indicated U1 - Sponsor: Air Force Office of Scientific Research (AFOSR). Grant: 04HE02COR. Recipients: No recipient indicated U1 - Sponsor: AFOSR. Grant: F49620-95-1-0388; F49620-00-1-0266. Recipients: No recipient indicated U1 - Sponsor: National Institutes of Health. Grant: RR00040. Recipients: No recipient indicated DO - 10.1093/acprof:oso/9780195189193.003.0017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-08865-017&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Li, Lixiong AU - Hurley, James A. T1 - Ammonia-based hydrogen source for fuel cell applications JO - International Journal of Hydrogen Energy JF - International Journal of Hydrogen Energy Y1 - 2007/01// VL - 32 IS - 1 M3 - Article SP - 6 EP - 10 SN - 03603199 AB - Generation of hydrogen from the reaction of ammonia () with magnesium hydride () was studied. Experiments were conducted at near ambient temperatures (75–), which are lower than that required by ammonia cracking and/or metal hydride thermal decomposition reactions. Effects of selected catalysts/promoters for the production of hydrogen by the – reaction were evaluated. Addition of ammonium chloride () accelerated the – reaction. Doped with either or also showed increased reactivity towards for production in the presence of . Results from this study demonstrated the feasibility of hydrogen production from ammonia-based reactions in support of potable hydrogen fuel cells. These preliminary results warrant further systematic studies to elucidate the activation mechanism of or as catalysts, as well as the role of as an additive, a reactant and/or a catalyst in the reaction system of interest. [Copyright &y& Elsevier] AB - Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Fuel cells KW - Hydrogen production KW - Ammonia KW - Magnesium group KW - Catalysts KW - Hydrides KW - Temperature normals KW - Ammonium compounds KW - production KW - Promoters N1 - Accession Number: 23670921; Li, Lixiong 1; Email Address: lli@ara.com; Hurley, James A. 2; Affiliations: 1: Applied Research Associates, Inc., 430 West 5th Street, Panama City, FL 32401, USA; 2: Air Force Research Laboratory, Tyndall AFB, FL 32403, USA; Issue Info: Jan2007, Vol. 32 Issue 1, p6; Thesaurus Term: Fuel cells; Thesaurus Term: Hydrogen production; Thesaurus Term: Ammonia; Subject Term: Magnesium group; Subject Term: Catalysts; Subject Term: Hydrides; Subject Term: Temperature normals; Subject Term: Ammonium compounds; Author-Supplied Keyword: production; Author-Supplied Keyword: Promoters; NAICS/Industry Codes: 325612 Polish and Other Sanitation Good Manufacturing; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; NAICS/Industry Codes: 325311 Nitrogenous Fertilizer Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.ijhydene.2006.05.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=23670921&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Parker, Gregory H. AU - Maple, Raymond C. AU - Beran, Philip S. T1 - Computational Aeroelastic Analysis of Store-Induced Limit-Cycle Oscillation. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2007/01//Jan/Feb2007 Y1 - 2007/01//Jan/Feb2007 VL - 44 IS - 1 M3 - Article SP - 48 EP - 48 SN - 00218669 AB - Limit-cycle oscillation was simulated for a rectangular wing referred to as the Goland+ wing. It was found that the aerodynamic nonlinearity responsible for limit-cycle oscillation in the Goland+ wing was shock motion and the periodic appearance/disappearance of shocks. The Goland+ structural model was such that in the transonic flutter dip region, the primary bending and twisting modes were in phase and coupled to produce a single-degree-of-freedom, torsional flutter mode about a point located ahead of the leading edge of the wing. It was determined that the combination of strong trailing-edge and lambda shocks which periodically appear/disappear, limited the energy flow into the structure. This mechanism quenched the growth of the flutter, resulting in a steady limit-cycle oscillation. Underwing and tip stores were added to the Goland+ wing to determine how they affected limit-cycle oscillation. It was found that the aerodynamic forces on the store transferred additional energy into the structure increasing the amplitude of the limit-cycle oscillation. However, it was also found that the underwing store interfered with the airflow on the bottom of the wing, which limited the amplitude of the limit-cycle oscillation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - OSCILLATIONS KW - LIMIT cycles KW - NONLINEAR oscillations KW - FLUTTER (Aerodynamics) KW - TRANSONIC aerodynamics N1 - Accession Number: 24133294; Source Information: Jan/Feb2007, Vol. 44 Issue 1, p48; Subject Term: AEROELASTICITY; Subject Term: OSCILLATIONS; Subject Term: LIMIT cycles; Subject Term: NONLINEAR oscillations; Subject Term: FLUTTER (Aerodynamics); Subject Term: TRANSONIC aerodynamics; Subject Term: ; Number of Pages: 1p; ; Document Type: Article; L3 - 10.2514/1.21051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=24133294&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kaplan, Sergey M. AU - Altman, Aaron AU - Ol, Michael T1 - Wake Vorticity Measurements for Low Aspect Ratio Wings at Low Reynolds Number. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2007/01//Jan/Feb2007 Y1 - 2007/01//Jan/Feb2007 VL - 44 IS - 1 M3 - Article SP - 241 EP - 241 SN - 00218669 AB - Trailing vortex structure of low aspect ratio wings was studied in a water tunnel at Reynolds numbers of 8000 and 24,000 using dye injection and digital particle image velocimetry in cross-flow planes in the near wake, for rectangular, semi-elliptical, and delta-wing planforms. The velocity data were used to calculate lift via circulation and effective span, and the results were compared with force balance measurements and classical inviscid theory. The objectives of the study were to assess how low-Reynolds number effects might affect the measurement of lift coefficient from tip-vortex circulation, how well the measurements fit the various theoretical models of lift curve slope for low aspect ratio wings, and the extent to which planform shape affects lift coefficient while aspect ratio and planform area are kept constant. All models were thin flat plates with square edges. For the conditions studied, apparent viscous effects on vorticity integrations in the wake were small, resulting in good agreement between lift coefficient values inferred from the measurements, the force balance data, and the classical inviscid formulas. Whereas the three wings exhibited distinctly different wake structures, lift curve slopes were similar. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VORTEX motion KW - VORTEX flaps KW - WATER tunnels KW - REYNOLDS number KW - INVISCID flow KW - AEROFOILS KW - AERODYNAMICS N1 - Accession Number: 24133313; Source Information: Jan/Feb2007, Vol. 44 Issue 1, p241; Subject Term: VORTEX motion; Subject Term: VORTEX flaps; Subject Term: WATER tunnels; Subject Term: REYNOLDS number; Subject Term: INVISCID flow; Subject Term: AEROFOILS; Subject Term: AERODYNAMICS; Subject Term: ; Number of Pages: 1p; ; Document Type: Article; L3 - 10.2514/1.23096 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=24133313&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Georgiadis, Basil D. T1 - A Writer at War: Vasily Grossman with the Red Army, 1941-1945. JO - Journal of Military Ethics JF - Journal of Military Ethics J1 - Journal of Military Ethics PY - 2007/01// Y1 - 2007/01// VL - 6 IS - 1 M3 - Book Review SP - 81 EP - 82 PB - Routledge SN - 15027570 AB - This article reviews the book "A Writer at War: Vasily Grossman With the Red Army 1941-1945," edited and translated by Beevor Antony and Luba Vinogradova. KW - WRITER at War: Vasily Grossman With the Red Army 1941-1945, A (Book) KW - ANTONY, Beevor KW - VINOGRADOVA, Luba KW - WAR correspondents KW - NONFICTION N1 - Accession Number: 24726609; Source Information: Jan2007, Vol. 6 Issue 1, p81; Subject Term: WRITER at War: Vasily Grossman With the Red Army 1941-1945, A (Book); Subject Term: ANTONY, Beevor; Subject Term: VINOGRADOVA, Luba; Subject Term: WAR correspondents; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; L3 - 10.1080/15027570600913270 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=24726609&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Hallgarth, Matthew W. T1 - Bioethics and Armed Conflict: Moral Dilemmas of Medicine and War. JO - Journal of Military Ethics JF - Journal of Military Ethics J1 - Journal of Military Ethics PY - 2007/01// Y1 - 2007/01// VL - 6 IS - 1 M3 - Book Review SP - 83 EP - 84 PB - Routledge SN - 15027570 AB - This article reviews the book "Bioethics and Armed Conflict: Moral Dilemmas of Medicine and War," by Michael L. Gross. KW - BIOETHICS & Armed Conflict: Moral Dilemmas of Medicine & War (Book) KW - GROSS, Michael L. KW - MEDICINE & war KW - NONFICTION N1 - Accession Number: 24726608; Source Information: Jan2007, Vol. 6 Issue 1, p83; Subject Term: BIOETHICS & Armed Conflict: Moral Dilemmas of Medicine & War (Book); Subject Term: GROSS, Michael L.; Subject Term: MEDICINE & war; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; L3 - 10.1080/15027570601086654 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=24726608&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - McFarland, Michael J. AU - Rasmussen, Steven L. AU - Stone, Daniel A. AU - Palmer, Glenn R. AU - Olivas, Arthur C. AU - Wander, Joseph D. AU - Spencer, Michael T1 - Field Demonstration of Visible Opacity Photographic Systems. JO - Journal of the Air & Waste Management Association (Air & Waste Management Association) JF - Journal of the Air & Waste Management Association (Air & Waste Management Association) Y1 - 2007/01// VL - 57 IS - 1 M3 - Article SP - 31 EP - 38 PB - Air & Waste Management Association SN - 10962247 AB - The Digital Opacity Compliance System (DOCS) is an innovative method that uses digital imaging technology to quantify visible opacity of stationary sources. DOCS, which has been demonstrated at pilot and full scale as a technically defensible and economically attractive alternative to U.S. Environmental Protection Agency (EPA) Reference Method 9 (Method 9), uses commercial-off-the-shelf (COTS) digital cameras in combination with a user-friendly computer software package to determine opacity. To date, all DOCS field testing has been conducted using two models of digital cameras, notably, Kodak Models DC265 and DC290, both of which are no longer commercially available. To ensure that field-validated digital cameras will be available to future DOCS users, a suite of new digital cameras was evaluated with the opacity determination software including the following: (1) Sony Model Cybershot Model DSC-WI, (2) Nikon Model Coolpix 5200, (3) Fuji Finepix Model E500, and (4) Kodak Model DX6490. Within the opacity range of regulatory interest, that is, 0--40%, the Sony Cybershot Model DSC-WI and Nikon Coolpix Model 5200 digital cameras were found to generate plume photographs of which the DOCS opacity analysis yielded results that were statistically equivalent to the previously field-validated Kodak Model DC290. In contrast, the Fuji Finepix Model E500 generated plume photographs of which the DOCS opacity analysis were, on average, 2.2% less than those generated by the Kodak Model DC290 photographs, a difference that was determined to be statistically significant. Over the same opacity range, photographs taken by the Kodak Model DX6490 yielded DOCS opacity readings that were found to be statistically equivalent to a Method 9-certified transmissometer. Based on the results from the current digital camera validation testing approach, EPA has developed a new camera-based visible opacity measurement method titled "Determination of Visible Emission Opacity from Stationary Sources Using Computer-Based Photographic Analysis Systems." The proposed method is expected to be promulgated after closure of the public comment period. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Air & Waste Management Association (Air & Waste Management Association) is the property of Air & Waste Management Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Opacity (Optics) KW - Digital cameras KW - Computer software KW - Optics KW - Photographs N1 - Accession Number: 23810963; McFarland, Michael J. 1; Email Address: farlandm@msn.com; Rasmussen, Steven L. 2; Stone, Daniel A. 2; Palmer, Glenn R. 2; Olivas, Arthur C. 2; Wander, Joseph D. 3; Spencer, Michael 4; Affiliations: 1: Department of Civil and Environmental Engineering, Utah State University, Logan, UT; 2: Hill Air Force Base, UT; 3: U.S. Air Force Research Laboratory, Tyndall Air Force Base, FL; 4: Xerox Corp., Rochester, NY; Issue Info: Jan2007, Vol. 57 Issue 1, p31; Subject Term: Opacity (Optics); Subject Term: Digital cameras; Subject Term: Computer software; Subject Term: Optics; Subject Term: Photographs; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; Number of Pages: 8p; Illustrations: 2 Black and White Photographs, 3 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=23810963&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Peterson, Dale AD - US Air Force Academy T1 - Gridline Indifference Graphs JO - Mathematical Social Sciences JF - Mathematical Social Sciences Y1 - 2007/01// VL - 53 IS - 1 SP - 69 EP - 92 SN - 01654896 N1 - Accession Number: 0897786; Publication Type: Journal Article; Update Code: 200704 N2 - Indifference graphs can be realized on a line with vertices adjacent whenever they are within a given distance. These well-studied graphs have applications to many fields including ecology, cluster theory, and psychology, in the placement of objects in a single dimension. The extension to the grid and higher dimensions has been considered in e.g. Goodman's study of perception (1977); we introduce gridline indifference graphs, which can be realized in the plane with vertices adjacent whenever they are within a given distance and on a common vertical or horizontal line. We obtain full and partial characterizations when these graphs are triangulated in terms of forbidden subgraphs, extreme points, and tree-clique graphs. These results are extended to higher dimensions. KW - Miscellaneous Mathematical Tools C65 L3 - http://www.sciencedirect.com/science/journal/01654896 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0897786&site=ehost-live&scope=site UR - http://dx.doi.org/10.1016/j.mathsocsci.2006.08.003 UR - http://www.sciencedirect.com/science/journal/01654896 DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 106156551 T1 - Mortality, length of life, and physical examination attendance in participants of the Air Force Health Study. AU - Ketchum NS AU - Michalek JE AU - Pavuk M Y1 - 2007/01// N1 - Accession Number: 106156551. Language: English. Entry Date: 20070921. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 2984771R. KW - Life Expectancy -- Trends KW - Military Medicine KW - Military Personnel KW - Mortality -- Trends KW - Physical Examination -- Utilization KW - Veterans KW - War KW - Appointments and Schedules KW - Case Control Studies KW - Cause of Death KW - Confidence Intervals KW - Demography KW - Herbicides KW - International Classification of Diseases KW - Middle Age KW - Relative Risk KW - Risk Assessment KW - Texas KW - Vietnam KW - Human SP - 53 EP - 57 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 172 IS - 1 CY - Bethesda, Maryland PB - AMSUS AB - Begun in 1982, the Air Force Health Study (AFHS) has assessed the mortality of veterans of Operation Ranch Hand, the unit responsible for aerially spraying herbicides in Vietnam. A comparison group of other Air Force veterans involved with aircraft missions in Southeast Asia during the same period, but not involved with spraying herbicides, was included in the study. Among 18,082 veterans, this report examined whether attendance at AFHS physical examinations from 1982 to 1999 played a role in mortality experience and potential lengthening of life relative to veterans who did not attend. The years of potential life lost for 1,173 veterans who died before age 65 was calculated. No statistically significant difference in risk of death was found from all causes, cancer, or circulatory disease between attendees and nonattendees. No evidence was found to suggest that attending physical examinations decreased mortality or substantially lengthened life in AFHS participants. SN - 0026-4075 AD - Air Force Research Laboratory, 8315 Hawks Road, Building 1168, Brooks City-Base, TX. U2 - PMID: 17274267. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106156551&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - GEN AU - McKinley, Arnold F. AU - Lee, David J. AU - Podolefsky, Noah S. AU - Finkelstein, Noah D. AU - Honig, E. T1 - Letters to the Editor. JO - Physics Teacher JF - Physics Teacher J1 - Physics Teacher PY - 2007/01// Y1 - 2007/01// VL - 45 IS - 1 M3 - Letter SP - 4 EP - 6 SN - 0031921X AB - Several letters to the editor are presented in response to articles in previous issues including "The Perceived Value of College Physics Textbooks: Students and Instructors May Not See Eye to Eye," by Noah Podolefsky and Noah Finkelstein" in the September 2006 issue, and a comment on the nationwide high school physics safe cracking competition held yearly at the Weizmann Institute of Science in Rehovoth, Israel. KW - LETTERS to the editor KW - PHYSICS -- Study & teaching KW - TEXTBOOKS KW - SCIENCE competitions KW - MEKHON Vaitsman le-mada KW - ISRAEL N1 - Accession Number: 23684284; Source Information: Jan2007, Vol. 45 Issue 1, p4; Subject Term: LETTERS to the editor; Subject Term: PHYSICS -- Study & teaching; Subject Term: TEXTBOOKS; Subject Term: SCIENCE competitions; Subject Term: MEKHON Vaitsman le-mada; Subject Term: ; Geographic Subject: ISRAEL; Geographic Subject: ; Number of Pages: 4p; ; Document Type: Letter; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=trh&AN=23684284&site=ehost-live&scope=site DP - EBSCOhost DB - trh ER - TY - CHAP ID - 2007-06007-005 AN - 2007-06007-005 AU - Goettl, Barry P. AU - Ashworth, Alan R. S. III AU - Chaiken, Scott R. ED - Fiore, Stephen M. ED - Salas, Eduardo ED - Fiore, Stephen M., (Ed) ED - Salas, Eduardo, (Ed) T1 - Advanced distributed learning for team training in command and control applications. T2 - Toward a science of distributed learning. Y1 - 2007/// SP - 93 EP - 117 CY - Washington, DC, US PB - American Psychological Association SN - 1-59147-800-6 SN - 978-1-59147-800-3 N1 - Accession Number: 2007-06007-005. Partial author list: First Author & Affiliation: Goettl, Barry P.; Air Force Research Laboratory, Brooks Air Force Base, TX, US. Release Date: 20070618. Correction Date: 20150824. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 1-59147-800-6, Hardcover; 978-1-59147-800-3, Hardcover. Language: English. Major Descriptor: Computer Assisted Instruction; Learning; Military Training. Classification: Military Psychology (3800). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 25. AB - Today's technological advances in weaponry and communications systems, along with military drawbacks, leaner budgets, and the changing nature of modern warfare, combine to place serious demands on Department of Defense (DOD) training programs. One consequence of this interaction is a push within the DOD for distributed learning and training (DLT) systems. In this chapter, we discuss the unique training needs of the DOD and how DLT can be exploited to address the increased training demands. We also discuss the important distinction between physical and cognitive fidelity and how these dimensions relate to the efficiency and effectiveness of training. We define fidelity as the degree to which a training system accurately reflects a particular characteristic of the domain to be learned. The distinction between physical and cognitive fidelity is critical, because many training developers try to maximize physical fidelity in the hopes of maximizing transfer. Often, this leads to poor training because the critical cognitive elements are not apparent to learners and must be divined through repetition. We argue that cognitive fidelity is critical early in training, whereas physical fidelity is important later in training. We discuss an important challenge that cognitive fidelity poses for validation of training and present a validation method, called backward transfer that is ideally suited for systems that have high cognitive fidelity and low physical fidelity. Finally, we demonstrate the utility of backward transfer by applying it to a simulated Airborne Warning and Control Systems (AWACS) task. Although our discussion focuses on Air Force training, much of what we argue and demonstrate applies to any training system, distributed or not, military or not. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cognitive & physical fidelity KW - training needs KW - Department of Defense KW - distributed learning & training KW - backward transfer KW - 2007 KW - Computer Assisted Instruction KW - Learning KW - Military Training KW - 2007 DO - 10.1037/11582-005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-06007-005&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-00391-005 AN - 2007-00391-005 AU - Ketchum, Norma S. AU - Michalek, Joel E. AU - Pavuk, Marian T1 - Mortality, Length of Life, and Physical Examination Attendance in Participants of the Air Force Health Study. JF - Military Medicine JO - Military Medicine JA - Mil Med Y1 - 2007/01// VL - 172 IS - 1 SP - 53 EP - 57 CY - US PB - Assn of Military Surgeons of the US SN - 0026-4075 SN - 1930-613X AD - Ketchum, Norma S., Air Force Research Laboratory, 8315 Hawks Road, Building 1168, Brooks City-Base, TX, US, 78235-5368 N1 - Accession Number: 2007-00391-005. PMID: 17274267 Partial author list: First Author & Affiliation: Ketchum, Norma S.; Air Force Research Laboratory, Brooks City-Base, TX, US. Release Date: 20070604. Correction Date: 20170302. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Combat Experience; Death and Dying; Health; Physical Examination. Classification: Military Psychology (3800). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 5. Issue Publication Date: Jan, 2007. AB - Begun in 1982, the Air Force Health Study (AFHS) has assessed the mortality of veterans of Operation Ranch Hand, the unit responsible for aerially spraying herbicides in Vietnam. A comparison group of other Air Force veterans involved with aircraft missions in Southeast Asia during the same period, but not involved with spraying herbicides, was included in the study. Among 18,082 veterans, this report examined whether attendance at AFHS physical examinations from 1982 to 1999 played a role in mortality experience and potential lengthening of life relative to veterans who did not attend. The years of potential life lost for 1,173 veterans who died before age 65 was calculated. No statistically significant difference in risk of death was found from all causes, cancer, or circulatory disease between attendees and nonattendees. No evidence was found to suggest that attending physical examinations decreased mortality or substantially lengthened life in AFHS participants. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - aircraft missions KW - physical examinations KW - Air Force veterans KW - mortality KW - Operation Ranch Hand KW - 2007 KW - Air Force Personnel KW - Combat Experience KW - Death and Dying KW - Health KW - Physical Examination KW - 2007 DO - 10.7205/MILMED.172.1.53 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-00391-005&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-09456-004 AN - 2007-09456-004 AU - Stephenson, James A. AU - Staal, Mark A. T1 - An ethical decision-making model for operational psychology. JF - Ethics & Behavior JO - Ethics & Behavior JA - Ethics Behav Y1 - 2007/// VL - 17 IS - 1 SP - 61 EP - 82 CY - United Kingdom PB - Taylor & Francis SN - 1050-8422 SN - 1532-7019 AD - Stephenson, James A., 1 SOSS/OSM, 595 Independence, Hurlburt Field, FL, US, 32544 N1 - Accession Number: 2007-09456-004. Partial author list: First Author & Affiliation: Stephenson, James A.; 421st Air Base Squadron, United States Air Force, United Kingdom. Other Publishers: Lawrence Erlbaum. Release Date: 20070723. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Decision Making; Military Personnel; Military Psychology; Professional Ethics. Minor Descriptor: Terrorism; War. Classification: Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 22. Issue Publication Date: 2007. AB - Operational psychology is an emerging subdiscipline that has enhanced the U.S. military's combat capabilities during the Global War on Terrorism. What makes this subdiscipline unique is its use of psychological principles and skills to improve a commander's decision making as it pertains to conducting combat (or related operations). Due to psychology's expanding role in combat support, psychologists are being confronted with challenges that require the application of their professional ethics in areas in which little if any guidance has been provided. Operational psychologists are at the forefront of this expansion. Accordingly, they need a decision model to assist them in this complex dynamic environment. To this end, this article reviews various decision models and ethical frameworks, selects the most appropriate, and then applies it to the challenges faced by operational psychologists. A naturalistic decision model that integrates rational and intuitive elements is recommended. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - ethical decision-making model KW - operational psychology KW - U.S. military combat KW - military psychology KW - 2007 KW - Decision Making KW - Military Personnel KW - Military Psychology KW - Professional Ethics KW - Terrorism KW - War KW - 2007 DO - 10.1080/10508420701310091 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-09456-004&site=ehost-live&scope=site UR - mark.staal@hotmail.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2008-08110-001 AN - 2008-08110-001 AU - Rode, Joseph C. AU - Rehg, Michael T. AU - Near, Janet P. AU - Underhill, John R. T1 - The effect of work/family conflict on intention to quit: The mediating roles of job and life satisfaction. JF - American Journal of Dance Therapy JO - American Journal of Dance Therapy Y1 - 2007/// VL - 29 IS - 2 SP - 65 EP - 82 CY - Germany PB - Springer SN - 0146-3721 SN - 1573-3262 AD - Rode, Joseph C., Farmer School of Business, Miami University, Oxford, OH, US, 45056 N1 - Accession Number: 2008-08110-001. Partial author list: First Author & Affiliation: Rode, Joseph C.; Farmer School of Business, Miami University, Oxford, OH, US. Release Date: 20090706. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Conference Information: Bi-Annual Conference of the International Society for the Study of Work and Organizational Values (ISSWOV), 9th. Conference Note: Portions of this paper were presented at the aforementioned conference. Major Descriptor: Family Work Relationship; Intention; Job Satisfaction; Life Satisfaction; Role Conflicts. Minor Descriptor: Employee Turnover; Evaluation. Classification: Research Methods & Experimental Design (2260). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Quality of Employment Survey; Work Interference with Family Scale. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 18. Issue Publication Date: 2007. AB - Research has shown consistently that job satisfaction predicts turnover, but much less attention has been given to the how relationships between work and non work or how overall subjective evaluations of life (i.e., life satisfaction) affects turnover. We tested a model that included job satisfaction, life satisfaction, and conflict between work and non work domains of life as predictors of intent to quit. Results from a sample of Air Force personnel revealed that life satisfaction was a significant predictor of intent to quit after controlling for job satisfaction, and that both job and life satisfaction mediated the effects of role conflict between work and non work on intent to quit. We consider implications of these findings for both theory and practice. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - work family conflict KW - intention to quit KW - mediating roles KW - job satisfaction KW - life satisfaction KW - 2007 KW - Family Work Relationship KW - Intention KW - Job Satisfaction KW - Life Satisfaction KW - Role Conflicts KW - Employee Turnover KW - Evaluation KW - 2007 DO - 10.1007/s10465-007-9032-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2008-08110-001&site=ehost-live&scope=site UR - john.underhill@wpafb.af.mil UR - near@indiana.edu UR - Michael.Rehg@afit.edu UR - rodejc@muohio.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-06084-009 AN - 2007-06084-009 AU - Law, Charlie L. AU - King, Eden AU - Zitek, Emily AU - Hebl, Michelle R. T1 - Methods for understanding the stigma of AIDS in the United States: A review and future directions. JF - Revista Interamericana de Psicología JO - Revista Interamericana de Psicología Y1 - 2007/01//Jan-Apr, 2007 VL - 41 IS - 1 SP - 75 EP - 86 CY - Brazil PB - Interamerican Society of Psychology SN - 0034-9690 SN - 2329-4795 AD - Hebl, Michelle R., Rice University, 6100 Main Street, MS205, Houston, TX, US, 77005 N1 - Accession Number: 2007-06084-009. Translated Serial Title: Interamerican Journal of Psychology. Partial author list: First Author & Affiliation: Law, Charlie L.; Behavioral Sciences and Leadership Department, United States Air Force Academy, CO, US. Release Date: 20080310. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: AIDS; AIDS (Attitudes Toward); Diagnosis; Stigma. Minor Descriptor: HIV; Social Discrimination. Classification: Immunological Disorders (3291). Population: Human (10). Location: US. References Available: Y. Page Count: 12. Issue Publication Date: Jan-Apr, 2007. AB - Since AIDS was first diagnosed in the United States in 1982, people with AIDS have been severely stigmatized. In this article, we explore the origin of the AIDS stigma and offer an explanation for why individuals with AIDS are stigmatized. Then, we review studies that exemplify how the stigma of AIDS in the United States is typically investigated. Finally, we outline future research directions for studying the stigma of AIDS. Specifically, we argue that future research should disentangle the stigmas of homosexuality, IV drug use, and the stigma of AIDS; address the implications of the AIDS stigma in the workplace; and consider strategies for remediating the stigma. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - AIDS stigma KW - United States KW - diagnosis KW - understanding KW - 2007 KW - AIDS KW - AIDS (Attitudes Toward) KW - Diagnosis KW - Stigma KW - HIV KW - Social Discrimination KW - 2007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-06084-009&site=ehost-live&scope=site UR - hebl@rice.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-18706-005 AN - 2007-18706-005 AU - Sayegh, Lisa AU - Harrison, Dianne F. T1 - Air force commanders' disciplinary decisions on spouse abuse cases. JF - Journal of Aggression, Maltreatment & Trauma JO - Journal of Aggression, Maltreatment & Trauma JA - J Aggress Maltreat Trauma Y1 - 2007/// VL - 15 IS - 1 SP - 75 EP - 91 CY - US PB - Haworth Press SN - 1092-6771 SN - 1545-083X AD - Sayegh, Lisa, HQ USAFA/DFBL, United States Air Force Academy, 2354 Fairchild Drive, Suite 6L-101B, Colorado Springs, CO, US, 80840-6228 N1 - Accession Number: 2007-18706-005. Partial author list: First Author & Affiliation: Sayegh, Lisa; Department of Behavioral Sciences and Leadership, United States Air Force Academy, CO, US. Other Publishers: Taylor & Francis. Release Date: 20071217. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Decision Making; Government Policy Making; Partner Abuse; Punishment. Minor Descriptor: Spouses. Classification: Military Psychology (3800); Behavior Disorders & Antisocial Behavior (3230). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 17. Issue Publication Date: 2007. AB - Inconsistencies exist among Air Force commanders when disciplining spouse abuse offenders, possibly owing to inadequate training, unclear role expectations, conflicting policy statements, or personal biases. This situation may lead to inappropriate decisions, further endangering victims and negatively impacting mission readiness. A sample of 624 Air Force squadron commanders was surveyed to measure how their perceived role and operations tempo affect their disciplinary decisions on two abuse scenarios. The study tested role and decision-theory concepts. Statistical results supported role theory in the predicted direction, and decision theory, but in the opposite direction hypothesized. Implications for theory, practice, and policy development for the military are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - disciplinary decisions KW - spouse abuse cases KW - US Air Force personnel KW - USAF squadron commanders KW - decision inconsistencies KW - 2007 KW - Air Force Personnel KW - Decision Making KW - Government Policy Making KW - Partner Abuse KW - Punishment KW - Spouses KW - 2007 DO - 10.1300/J146v15n01_05 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-18706-005&site=ehost-live&scope=site UR - lisa.sayegh@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-06928-008 AN - 2007-06928-008 AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Cocktail party listening in a dynamic multitalker environment. JF - Perception & Psychophysics JO - Perception & Psychophysics JA - Percept Psychophys Y1 - 2007/01// VL - 69 IS - 1 SP - 79 EP - 91 CY - US PB - Psychonomic Society SN - 0031-5117 SN - 1532-5962 AD - Brungart, Douglas S., AFRL/HECB, Wright-Patterson Air Force Base, 2610 Seventh St., OH, US, 45433-7901 N1 - Accession Number: 2007-06928-008. PMID: 17515218 Other Journal Title: Attention, Perception, & Psychophysics. Partial author list: First Author & Affiliation: Brungart, Douglas S.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Other Publishers: Springer. Release Date: 20070611. Correction Date: 20110110. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Acoustics; Auditory Perception; Spatial Organization. Minor Descriptor: Oral Communication. Classification: Auditory & Speech Perception (2326). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 13. Issue Publication Date: Jan, 2007. AB - A priori information about the location of the target talker plays a critical role in cocktail party listening tasks, but little is known about the influence of imperfect spatial information in situations in which the listener has some knowledge about the location of the target speech but does not know its exact location prior to hearing the stimulus. In this study, spatial uncertainty was varied by adjusting the probability that the target talker in a multitalker stimulus would change locations at the end of each trial. The results show that listeners can adapt their strategies according to the statistical properties of a dynamic acoustic environment but that this adaptation is a relatively slow process that may require dozens of trials to complete. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cocktail party listening KW - dynamic multitalker environment KW - spatial information KW - acoustic environment KW - 2007 KW - Acoustics KW - Auditory Perception KW - Spatial Organization KW - Oral Communication KW - 2007 U1 - Sponsor: AFOSR. Grant: 01-HE-01-COR. Recipients: No recipient indicated DO - 10.3758/BF03194455 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-06928-008&site=ehost-live&scope=site UR - douglas.brungart@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2009-00753-001 AN - 2009-00753-001 AU - Johnson, Don AU - Flagg, Amanda AU - Dremsa, Theresa L. T1 - Effects of using Human Patient Simulator (HPS™) versus a CD-ROM on cognition and critical thinking. JF - Medical Education Online JO - Medical Education Online JA - Med Educ Online Y1 - 2007/// VL - 13 CY - US PB - Medical Education Online SN - 1087-2981 AD - Johnson, Don, US Army Graduate Program in Anesthesia Nursing, Fort Sam Houston, San Antonio, TX, US N1 - Accession Number: 2009-00753-001. Partial author list: First Author & Affiliation: Johnson, Don; US Army Graduate Program in Anesthesia Nursing, Fort Sam Houston, San Antonio, TX, US. Release Date: 20091019. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Johnson, Don. Major Descriptor: Cognition; Critical Thinking; Medical Education; Teaching Methods. Minor Descriptor: Computer Assisted Instruction; Simulation. Classification: Professional Education & Training (3410). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Longitudinal Study; Prospective Study; Quantitative Study. References Available: Y. ArtID: 1. Issue Publication Date: 2007. AB - Background: Very little prospective randomized experimental research exists on the use of simulation as a teaching method, and no studies have compared the two strategies of using the HPSTM and a CD-ROM. In addition, no researchers have investigated the effects of simulation on various levels of cognition, specifically lower-level and higher-level cognition or critical thinking. Objectives: A prospective pretest-posttest experimental mixed design (within and between) was used to determine if there were statistically significant differences in HPSTM and CD-ROM educational strategies in lower-level, higher-level cognition and critical thinking. Results: A repeated measures multivariate analysis of variance (RMANOVA) with LSD post-hoc tests were used to analyze the data. There were no significant differences between the HPSTM and CD-ROM groups on lower-level cognition scores. The HPSTM group did significantly better than the CD-ROM group on higher-level cognition and critical thinking scores. Conclusion: This study demonstrated that the choice of teaching strategies for lower-level cognition does not make a statistically significant difference in outcome. However, the HPSTM is superior to using CD-ROM and should be considered as the choice in teaching. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - educational strategies KW - cognition KW - critical thinking KW - human patient simulators KW - compact disc read only memory KW - 2007 KW - Cognition KW - Critical Thinking KW - Medical Education KW - Teaching Methods KW - Computer Assisted Instruction KW - Simulation KW - 2007 U1 - Sponsor: Wilford Hall Medical Center, 59th Clinical Research Squadron. Recipients: Johnson, Don; Flagg, Amanda; Dremsa, Theresa L. U1 - Sponsor: Lackland Air Force Base, US. Recipients: Johnson, Don; Flagg, Amanda; Dremsa, Theresa L. U1 - Sponsor: Uniformed Services University of the Health Sciences, TriService Nursing Research Program (TSNRP), US. Recipients: No recipient indicated UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-00753-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Seetharaman, Guna AU - Lakhotia, Arun AU - Blasch, Erik Philip T1 - Unmanned Vehicles Come of Age: The DARPA Grand Challenge. JO - Computer (00189162) JF - Computer (00189162) J1 - Computer (00189162) PY - 2006/12// Y1 - 2006/12// VL - 39 IS - 12 M3 - Article SP - 26 EP - 29 SN - 00189162 AB - The article discusses various reports published within the issue including "VisLab and the Evolution of Vision-Based UGVs," by Massimo Bertozzi and "Perception and Planning Architecture for Autonomous ground Vehicles," by Bob Touchton. KW - PREFACES & forewords KW - REMOTELY piloted vehicles N1 - Accession Number: 23555736; Source Information: Dec2006, Vol. 39 Issue 12, p26; Subject Term: PREFACES & forewords; Subject Term: REMOTELY piloted vehicles; Subject Term: ; Number of Pages: 4p; ; Illustrations: 1 Color Photograph; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=23555736&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Lombardi, Paolo AU - Zavidovique, Bertrand AU - Talbert, Michael T1 - On the Importance of Being Contextual. (cover story) JO - Computer (00189162) JF - Computer (00189162) J1 - Computer (00189162) PY - 2006/12// Y1 - 2006/12// VL - 39 IS - 12 M3 - Article SP - 57 EP - 61 SN - 00189162 AB - The article provides information on the importance of being contextual in terms of an unmanned vehicle control performance in the U.S. Vehicles need to be autonomous with effective context interpretation, that is having the continuous understanding and monitoring of the external environment in sensory-based vehicle control systems. The term context is defined to understand deeply on context dependency in practical systems. The advantages of applying context monitoring to unmanned vehicle operation is discussed as well as the context-related features of visual system that affect the performance of computer vision algorithms and the adaptation of the sensing system. KW - REMOTELY piloted vehicles KW - VEHICLES KW - ARTIFICIAL intelligence -- Software KW - COMPUTER vision KW - ROBOT vision KW - PATTERN recognition systems KW - COMPUTER software KW - UNITED States N1 - Accession Number: 23555743; Source Information: Dec2006, Vol. 39 Issue 12, p57; Subject Term: REMOTELY piloted vehicles; Subject Term: VEHICLES; Subject Term: ARTIFICIAL intelligence -- Software; Subject Term: COMPUTER vision; Subject Term: ROBOT vision; Subject Term: PATTERN recognition systems; Subject Term: COMPUTER software; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 5p; ; Illustrations: 1 Color Photograph, 1 Diagram, 1 Graph; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=23555743&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Greco, M. AU - Gini, F. AU - Rangaswamy, M. T1 - Statistical analysis of measured polarimetric clutter data at different range resolutions. JO - IEE Proceedings -- Radar, Sonar & Navigation JF - IEE Proceedings -- Radar, Sonar & Navigation Y1 - 2006/12// VL - 153 IS - 6 M3 - Article SP - 473 EP - 481 SN - 13502395 AB - This paper deals with the statistical modelling of radar backscattering from sea surface at low-grazing angles in high resolution radar systems. High-resolution polarimetric data at different range resolutions (60, 30, 15, 9 and 3 m) are analysed to highlight the differences in clutter statistical behaviour due to changes of resolution and/or polarisation. The clutter data were recorded by the IPIX radar of McMaster University in Grimsby, Ontario, Canada. [ABSTRACT FROM AUTHOR] AB - Copyright of IEE Proceedings -- Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STATISTICS KW - RADAR KW - POLARIMETRY KW - RESOLUTION (Optics) KW - BACKSCATTERING N1 - Accession Number: 23022064; Greco, M. 1; Email Address: m.greco@iet.unipi.it; Gini, F. 1; Rangaswamy, M. 2; Affiliations: 1: Universitá di Pisa, Dipartimento di Ingegneria dell'Informazione, Pisa, Italia; 2: Air Force Research Laboratory Sensors Directorate, USA; Issue Info: Dec2006, Vol. 153 Issue 6, p473; Thesaurus Term: STATISTICS; Subject Term: RADAR; Subject Term: POLARIMETRY; Subject Term: RESOLUTION (Optics); Subject Term: BACKSCATTERING; Number of Pages: 9p; Illustrations: 1 Diagram, 7 Charts, 18 Graphs; Document Type: Article L3 - 10.1049/ip-rsn:20060045 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=23022064&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Hansen, Thorkild B. AU - Marr, Richard A. AU - Lammers, Uve H. W. AU - Tanigawa, Timothy J. AU - McGahan, Robert V. T1 - Bistatic RCS Calculations From Cylindrical Near-Field Measurements—Part I: Theory. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2006/12// Y1 - 2006/12// VL - 54 IS - 12 M3 - Article SP - 3846 EP - 3856 SN - 0018926X AB - A theory is presented for computing scattered far fields of targets from cylindrical near-field measurements. The targets are illuminated by plane waves and measured in a radio anechoic chamber on a cylindrical scan surface. The scattered field on the scan cylinder is obtained by background subtraction. The near-field data is truncated at the top, bottom, and angular edges of the scan cylinder. These truncation edges can cause inaccuracies in the computed far fields. Correction techniques are developed for the top and bottom truncation edges. The cylindrical wave expansions automatically apply angular tapers to the near-field data that reduce the effect of the angular truncation edges. The taper functions depend on the angular sample spacing and are related to the currents induced on perfectly electrically conducting PEC cylinders in related scattering problems. The method of stationary phase is employed with asymptotic expressions for the taper functions to determine the area on the scan cylinder that is most important for computing the far field in a given direction. The theory is validated through numerical examples involving electrically large scatterers. The edge-correction techniques significantly increase the accuracy of the computed far field. A companion paper presents experimental results. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEAR-fields KW - RADAR cross sections KW - ANECHOIC chambers KW - BISTATIC radar KW - ELECTROMAGNETIC fields KW - MAGNETIC dipoles KW - MAGNETIC fields N1 - Accession Number: 23617480; Source Information: Dec2006, Vol. 54 Issue 12, p3846; Subject Term: NEAR-fields; Subject Term: RADAR cross sections; Subject Term: ANECHOIC chambers; Subject Term: BISTATIC radar; Subject Term: ELECTROMAGNETIC fields; Subject Term: MAGNETIC dipoles; Subject Term: MAGNETIC fields; Subject Term: ; Number of Pages: 11p; ; Illustrations: 5 Black and White Photographs, 2 Diagrams, 8 Graphs; ; Document Type: Article; L3 - 10.1109/TAP.2006.886472 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=23617480&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Marr, Richard . AU - Lammers, Uve W. AU - Hansen, Thorkild . AU - Tanigawa, Timothy . AU - McGahan, Robert . T1 - Bistatic RCS Calculations From Cylindrical Near-Field Measurements—Part II: Experiments. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2006/12// Y1 - 2006/12// VL - 54 IS - 12 M3 - Article SP - 3857 EP - 3864 SN - 0018926X AB - Bistatic radar cross section (RCS) is computed from cylindrical near-field measurements obtained in a radio anechoic chamber with the target illuminated by a compact-range reflector. Near-field measurement is convenient where the RCS of complex targets is not amenable to computation or where computational results require experimental confirmation. A companion paper addresses the theory of cylindrical near-field scanning with reference to our experimental system. RCS of canonical targets derived from near-field measurement are in good agreement with theory. This paper compares the far fields computed from the near-field measurements with numerical solutions. Separating the target-scattered fields from incident and background fields presents a major challenge in an indoor bistatic radar configuration. We discuss the errors introduced by a residue of the incident field that is not canceled by the background subtraction method currently in use. A slow drift in system parameters and probe column oscillations are among the contributing factors. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BISTATIC radar KW - RADAR cross sections KW - SIGNAL processing KW - NEAR-fields KW - ANECHOIC chambers KW - ELECTRIC fields KW - MAGNETIC dipoles N1 - Accession Number: 23617481; Source Information: Dec2006, Vol. 54 Issue 12, p3857; Subject Term: BISTATIC radar; Subject Term: RADAR cross sections; Subject Term: SIGNAL processing; Subject Term: NEAR-fields; Subject Term: ANECHOIC chambers; Subject Term: ELECTRIC fields; Subject Term: MAGNETIC dipoles; Subject Term: ; Number of Pages: 8p; ; Illustrations: 4 Black and White Photographs, 2 Diagrams, 10 Graphs; ; Document Type: Article; L3 - 10.1109/TAP.2006.886482 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=23617481&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR T1 - Patterns Of Ephedra and Other Stimulant Use in Collegiate Hockey Athletes. AU - Bents, Robert T. AU - Marsh, Erik JO - International Journal of Sport Nutrition & Exercise Metabolism JF - International Journal of Sport Nutrition & Exercise Metabolism Y1 - 2006/12// VL - 16 IS - 6 SP - 636 EP - 643 SN - 1526484X N1 - Accession Number: 23327268; Author: Bents, Robert T.: 1 email: bentsmd@mtashland.net. Author: Marsh, Erik: 2 email: Erik.Marsh@usafa.af.mil. ; Author Affiliation: 1 Orthopedic Center for Sports Medicine in Grants Pass, OR 97527: 2 Department of Athletics, United States Air Force Academy, USAF Academy, CO 80840; No. of Pages: 8; Language: English; Publication Type: Article; Update Code: 20061208 N2 - This study examined trends in stimulant use and attitudes toward use among American collegiate hockey athletes. All 139 players in one college hockey conference completed a comprehensive questionnaire. Over half of the athletes (51.8%) confirmed stimulant use before a hockey game or practice. About half of the respondents (48.5%) reported having used ephedra at least one time to improve athletic performance. Additionally, 17.4% reported using pseudoephedrine to improve performance in the 30 days prior to survey administration. Over half (55.4%) were aware of the recent national ban on ephedra. Fifty-nine percent stated the national ban made them less likely to use ephedra products. The majority of athletes began use prior to college. Coaches, athletic trainers, and team physicians should be aware of athletes' patterns of stimulant use. Improved educational efforts directed at younger athletes are necessary to deter abuse of metabolic stimulants. ABSTRACT FROM AUTHOR KW - *STIMULANTS KW - *COLLEGE athletes KW - *DOPING in sports KW - *EPHEDRA KW - *COLLEGE hockey KW - *EPHEDRINE KW - *DRUG laws & regulations KW - SUBSTANCE use KW - SURVEYS KW - QUESTIONNAIRES KW - amphetamines KW - ergogenic aids KW - pseudoephedrine KW - stimulants UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=23327268&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Cook, Martin L. T1 - Thucydides as a Resource for Teaching Ethics and Leadership in Military Education Environments. JO - Journal of Military Ethics JF - Journal of Military Ethics J1 - Journal of Military Ethics PY - 2006/12// Y1 - 2006/12// VL - 5 IS - 4 M3 - Article SP - 353 EP - 362 PB - Routledge SN - 15027570 AB - The author describes a method for teaching Thucydides to military officers in the context of professional military education which integrates military ethics. Using the 'Great Books' method of classroom discussion, the author's experience of teaching Thucydides for five years at the United States Army War College suggests that this is a highly effective method of exploring a wide range of topics in military ethics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Military Ethics is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY ethics KW - CIVIL-military relations KW - MILITARY strategy KW - MORALE KW - EXECUTIVE power N1 - Accession Number: 24925230; Source Information: Dec2006, Vol. 5 Issue 4, p353; Subject Term: MILITARY ethics; Subject Term: CIVIL-military relations; Subject Term: MILITARY strategy; Subject Term: MORALE; Subject Term: EXECUTIVE power; Subject Term: ; Number of Pages: 10p; ; Document Type: Article; L3 - 10.1080/15027570601037707 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=24925230&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Brungart, Douglas S. AU - Chang, Peter S. AU - Simpson, Brian D. AU - DeLiang Wang T1 - Isolating the energetic component of speech-on-speech masking with ideal time-frequency segregation. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2006/12// VL - 120 IS - 6 M3 - Article SP - 4007 EP - 4018 SN - 00014966 AB - When a target speech signal is obscured by an interfering speech wave form, comprehension of the target message depends both on the successful detection of the energy from the target speech wave form and on the successful extraction and recognition of the spectro-temporal energy pattern of the target out of a background of acoustically similar masker sounds. This study attempted to isolate the effects that energetic masking, defined as the loss of detectable target information due to the spectral overlap of the target and masking signals, has on multitalker speech perception. This was achieved through the use of ideal time-frequency binary masks that retained those spectro-temporal regions of the acoustic mixture that were dominated by the target speech but eliminated those regions that were dominated by the interfering speech. The results suggest that energetic masking plays a relatively small role in the overall masking that occurs when speech is masked by interfering speech but a much more significant role when speech is masked by interfering noise. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPEECH KW - AUDITORY perception KW - SOUND KW - HEARING KW - NOISE N1 - Accession Number: 23321725; Brungart, Douglas S. 1; Email Address: douglas.brungart@wpafb.af.mil; Chang, Peter S. 2; Email Address: Chang.549@osu.edu; Simpson, Brian D. 1; DeLiang Wang 3; Affiliations: 1 : Air Force Research Laboratory, Human Effectiveness Directorate, 2610 Seventh Street, Wright-Patterson AFB, Ohio 45433; 2 : Department of Computer Science and Engineering, Ohio State University, Columbus, Ohio 43210; 3 : Department of Computer Science and Engineering and Center for Cognitive Science, Ohio State University, Columbus, Ohio 43210; Source Info: Dec2006, Vol. 120 Issue 6, p4007; Subject Term: SPEECH; Subject Term: AUDITORY perception; Subject Term: SOUND; Subject Term: HEARING; Subject Term: NOISE; Number of Pages: 12p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1121/1.2363929 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=23321725&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR AU - Wells, Timothy S. AU - Wang, Linda Z. AU - Spooner, Christina N. AU - Smith, Tyler C. AU - Hiliopoulos, Katia M. AU - Kamens, Deborah R. AU - Gray, Gregory C. AU - Sato, Paul A. T1 - Self-Reported Reproductive Outcomes Among Male and Female 1991 Gulf War era US Military Veterans. JO - Maternal & Child Health Journal JF - Maternal & Child Health Journal Y1 - 2006/12// VL - 10 IS - 6 M3 - Article SP - 501 EP - 510 PB - Springer Science & Business Media B.V. SN - 10927875 AB - Background: Following the 1991 Gulf War, some veterans expressed concerns regarding their reproductive health. Our objective was to assess whether an association exists between deployment to the 1991 Gulf War and self-reported adverse pregnancy outcomes. Methods: Using a modified Dillman technique with telephone follow-up, we conducted a survey via a postal questionnaire from February 1996–August 1997 to compare selected reproductive outcomes among 10,000 US veterans deployed to the 1991 Gulf War with those of 10,000 nondeployed Gulf War era veterans. Results: A total of 8742 individuals responded to the survey, a response rate of 51 percent. Using multivariable analyses, results showed no differences in number of reported pregnancies between Gulf War veterans and nondeployed veterans. Among 2233 female and 2159 male participants, there were no differences in birth weight of infants born to Gulf War veterans compared with nondeployed Gulf War era veterans. In multivariable models, male and female Gulf War veterans did not significantly differ in risk for ectopic pregnancies, stillbirths, or miscarriages when compared with nondeployed veterans of the same era. Conclusions: These results do not suggest an association between service in the 1991 Gulf War and adverse reproductive outcomes for both male and female veterans during the 4 years after the war. [ABSTRACT FROM AUTHOR] AB - Copyright of Maternal & Child Health Journal is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERSIAN Gulf War, 1991 -- Health aspects KW - REPRODUCTIVE health -- Research KW - BIRTH weight KW - PREGNANCY complications -- Risk factors KW - MEDICAL care of veterans KW - ECTOPIC pregnancy -- Risk factors KW - MISCARRIAGE KW - UNITED States -- Armed Forces -- Diseases KW - Birth weight KW - Gulf War KW - Military KW - Reproductive outcomes N1 - Accession Number: 23332742; Wells, Timothy S. 1,2; Email Address: timothy.wells@wpafb.af.mil; Wang, Linda Z. 1; Spooner, Christina N. 1; Smith, Tyler C. 1; Hiliopoulos, Katia M. 3; Kamens, Deborah R. 1; Gray, Gregory C. 4; Sato, Paul A. 5; Source Information: Dec2006, Vol. 10 Issue 6, p501; Subject: PERSIAN Gulf War, 1991 -- Health aspects; Subject: REPRODUCTIVE health -- Research; Subject: BIRTH weight; Subject: PREGNANCY complications -- Risk factors; Subject: MEDICAL care of veterans; Subject: ECTOPIC pregnancy -- Risk factors; Subject: MISCARRIAGE; Subject: UNITED States -- Armed Forces -- Diseases; Author-Supplied Keyword: Birth weight; Author-Supplied Keyword: Gulf War; Author-Supplied Keyword: Military; Author-Supplied Keyword: Reproductive outcomes; Number of Pages: 10p; Illustrations: 6 Charts; Document Type: Article L3 - 10.1007/s10995-006-0122-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=23332742&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 2007-04201-044 AN - 2007-04201-044 AU - Wang, Hongbin AU - Bello, Paul T1 - Ritualized behavior as a domain-general choice of actions. JF - Behavioral and Brain Sciences JO - Behavioral and Brain Sciences JA - Behav Brain Sci Y1 - 2006/12// VL - 29 IS - 6 SP - 633 EP - 634 CY - United Kingdom PB - Cambridge University Press SN - 0140-525X SN - 1469-1825 AD - Wang, Hongbin, School of Health Information Sciences, University of Texas Health Science Center at Houston, Houston, TX, US, 77030 N1 - Accession Number: 2007-04201-044. Partial author list: First Author & Affiliation: Wang, Hongbin; School of Health Information Sciences, University of Texas Health Science Center at Houston, Houston, TX, US. Release Date: 20070702. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Comment/Reply. Language: English. Major Descriptor: Culture (Anthropological); Human Development; Obsessive Compulsive Disorder; Pathology; Rites (Nonreligious). Minor Descriptor: Anthropology; Evolutionary Psychology. Classification: Neuroses & Anxiety Disorders (3215). Population: Human (10). Page Count: 2. Issue Publication Date: Dec, 2006. AB - Comments on an article by Pascal Boyer and Pierre Lienard (see record [rid]2007-04201-022[/rid]). Although we agree that ritualized behavior is a mystery that calls out for an explanation, we do not think that the proposed domain-specific two-component system offers an empirically well-justified and theoretically parsimonious description of the phenomena. Instead, we believe that the deployment of domain-general mechanisms based on choice of actions could also explain the essential features of ritualized behavior. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - ritualized behavior KW - precaution systems KW - action parsing KW - developmental rituals KW - pathological rituals KW - cultural rituals KW - obsessive compulsive disorders KW - pathology KW - evolutionary psychology KW - 2006 KW - Culture (Anthropological) KW - Human Development KW - Obsessive Compulsive Disorder KW - Pathology KW - Rites (Nonreligious) KW - Anthropology KW - Evolutionary Psychology KW - 2006 DO - 10.1017/S0140525X06009551 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-04201-044&site=ehost-live&scope=site UR - Pello.Bello@rl.af.mil UR - Hongbin.Wang@uth.tmc.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Cerutti, L. AU - Boissier, G. AU - Grech, P. AU - Pérona, A. AU - Angellier, J. AU - Rouillard, Y. AU - Kaspi, R. AU - Genty, F. T1 - Hole-well antimonide laser diodes on GaSb operating near 2.93 µm. JO - Electronics Letters JF - Electronics Letters Y1 - 2006/11/23/ VL - 42 IS - 24 M3 - Article SP - 1400 EP - 1401 SN - 00135194 AB - The operation of electrically-pumped type-II Sb-based laser diodes in which only the holes are quantum confined is reported. These laser structures were fabricated by molecular beam epitaxy on (001) GaSb substrates. In the multi-quantum well region, radiative recombinations originate from InGaSb hole wells embedded in InGaAsSb barriers lattice-matched to GaSb. Laser operation was demonstrated from such structures up to 243 K at 2.93 µm in the pulsed regime (200 ns, 5 kHz). A minimum threshold of about 12.8 kW/cm2 combined with a T0 around 70 K have been measured. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIODES KW - QUANTUM wells KW - RADIATIVE transitions KW - QUANTUM electronics KW - LASER spectroscopy KW - WAVELENGTHS N1 - Accession Number: 23250547; Cerutti, L. 1; Boissier, G. 1; Grech, P. 1; Pérona, A. 1; Angellier, J. 1; Rouillard, Y. 1; Kaspi, R. 2; Genty, F. 1; Email Address: genty@univ-montp2.fr; Affiliations: 1: CEM2, Université of Montpellier 2, 34095 Montpellier, France; 2: Air Force Research Laboratory, AFRL/DELS, Albuquerque, New Mexico, 87111, USA; Issue Info: 11/23/2006, Vol. 42 Issue 24, p1400; Subject Term: DIODES; Subject Term: QUANTUM wells; Subject Term: RADIATIVE transitions; Subject Term: QUANTUM electronics; Subject Term: LASER spectroscopy; Subject Term: WAVELENGTHS; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 2p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1049/el:20062753 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=23250547&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Mailloux, Robert J. T1 - Operating Modes and Dynamic Range of Active Space-Fed Arrays With Digital Beamforming. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2006/11/02/Nov2006 Part 2 Y1 - 2006/11/02/Nov2006 Part 2 VL - 54 IS - 11 M3 - Article SP - 3347 EP - 3355 SN - 0018926X AB - Narrow band space-fed (lens) scanning arrays have played a major role in many military and commercial applications. However, wider bandwidth space-fed arrays with phase shifters in the objective aperture, and subarrayed time delay have not found many ready applications because of network losses, complexity, and more recently because of a perceived incompatibility with active solid state module technology. This paper demonstrates that a feed array with transmit/receive (T/R) modules and digitally reconfigured control, can accommodate both narrow band and radiation with relatively efficient use of the active sources. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BROADBAND communication systems KW - BEAM dynamics KW - ELECTRON beams KW - BANDWIDTHS KW - PARTICLE beams KW - RADIATION KW - TELECOMMUNICATION systems N1 - Accession Number: 23126017; Source Information: Nov2006 Part 2, Vol. 54 Issue 11, p3347; Subject Term: BROADBAND communication systems; Subject Term: BEAM dynamics; Subject Term: ELECTRON beams; Subject Term: BANDWIDTHS; Subject Term: PARTICLE beams; Subject Term: RADIATION; Subject Term: TELECOMMUNICATION systems; Subject Term: ; Number of Pages: 5p; ; Document Type: Article; L3 - 10.1109/TAP.2006.880658 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=23126017&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Michaelson, Peter G. AU - Allan, Patrick AU - Chaney, John AU - Mair, Eric A. T1 - Validations of a Portable Home Sleep Study With Twelve-Lead Polysomnography: Comparisons and Insights Into a Variable Gold Standard. (cover story) JO - Annals of Otology, Rhinology & Laryngology JF - Annals of Otology, Rhinology & Laryngology Y1 - 2006/11// VL - 115 IS - 11 M3 - Article SP - 802 EP - 809 SN - 00034894 AB - Objectives: Accurate and timely diagnosis for patients with obstructive sleep apnea (OSA) is imperative. Unfortunately, growing interest in this diagnosis has resulted in increased requests and waiting times for polysomnography (PSG), as well as a potential delay in diagnosis and treatment. This study evaluated the accuracy and viability of utilizing SNAP (SNAP Laboratories, LLC, Wheeling, Illinois), a portable home sleep test, as an alternative to traditional PSG in diagnosing OSA. Methods: This prospective clinical trial included 59 patients evaluated at our institution's sleep laboratory. Concurrent PSG and SNAP testing was performed for 1 night on each patient. Independent, blinded readers at our institution and at an outside-accredited institution read the PSG data, and 2 independent, blinded readers interpreted the SNAP data at SNAP laboratories. The apnea-hypopnea index (AHI) was used to compare the 2 testing modalities. The correlation coefficient, receiver operating characteristic curve analysis, and the Bland-Altman curves, as well as sensitivity, specificity, inter-reader variability, positive predictive value, and negative predictive value, were used to compare SNAP and PSG. Results: There is a definitive, statistically sound correlation between the AHIs determined from both PSG and SNAP. This relationship holds true for all measures of comparison, while displaying a concerning, weaker correlation between the different PSG interpretations. Conclusions: There is a convincing correlation between the study-determined AHIs of both PSG and SNAP. This finding supports SNAP as a suitable alternative to PSG in identifying OSA, while accentuating the inherent variation present in a PSG-derived AHl. This test expands the diagnostic and therapeutic prowess of the practicing otolaryngologist by offering an alternative OSA testing modality that is associated with not only less expense, decreased waiting time, and increased convenience, but also statistically proven accuracy. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of Otology, Rhinology & Laryngology is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SLEEP disorders KW - SLEEP apnea syndromes KW - POLYSOMNOGRAPHY KW - APNEA KW - CLINICAL trials KW - RESEARCH KW - obstructive sleep apnea KW - polysomnography KW - SNAP N1 - Accession Number: 23185790; Michaelson, Peter G. 1; Allan, Patrick 2; Chaney, John 2; Mair, Eric A. 1; Source Information: Nov2006, Vol. 115 Issue 11, p802; Subject: SLEEP disorders; Subject: SLEEP apnea syndromes; Subject: POLYSOMNOGRAPHY; Subject: APNEA; Subject: CLINICAL trials; Subject: RESEARCH; Author-Supplied Keyword: obstructive sleep apnea; Author-Supplied Keyword: polysomnography; Author-Supplied Keyword: SNAP; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=23185790&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Shima, Tal AU - Rasmussen, Steven J. AU - Sparks, Andrew G. AU - Passino, Kevin M. T1 - Multiple task assignments for cooperating uninhabited aerial vehicles using genetic algorithms JO - Computers & Operations Research JF - Computers & Operations Research Y1 - 2006/11// VL - 33 IS - 11 M3 - Article SP - 3252 EP - 3269 SN - 03050548 AB - Abstract: A problem of assigning cooperating uninhabited aerial vehicles to perform multiple tasks on multiple targets is posed as a new combinatorial optimization problem. A genetic algorithm for solving such a problem is proposed. The algorithm allows us to efficiently solve this NP-hard problem that has prohibitive computational complexity for classical combinatorial optimization methods. It also allows us to take into account the unique requirements of the scenario such as task precedence and coordination, timing constraints, and trajectory limitations. A matrix representation of the genetic algorithm chromosomes simplifies the encoding process and the application of the genetic operators. The performance of the algorithm is compared to that of deterministic branch and bound search and stochastic random search methods. Monte Carlo simulations demonstrate the viability of the genetic algorithm by showing that it consistently and quickly provides good feasible solutions. This makes the real time implementation for high-dimensional problems feasible. [Copyright &y& Elsevier] AB - Copyright of Computers & Operations Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL optimization KW - ALGORITHMS KW - GENETIC algorithms KW - COMBINATORIAL optimization KW - Cooperating agents KW - Genetic algorithm KW - Multiple tasks KW - Task assignment KW - Uninhabited aerial vehicles N1 - Accession Number: 20013939; Shima, Tal 1; Email Address: shima_tal@yahoo.com; Rasmussen, Steven J. 1; Sparks, Andrew G. 1; Passino, Kevin M. 2; Affiliations: 1: Control Theory and Optimization Branch, Air Force Research Laboratory, Bldg. 146, 2210 Eighth St., Wright-Patterson AFB, OH 45433, USA; 2: Department of Electrical and Computer Engineering, The Ohio State University, Columbus, OH 43210, USA; Issue Info: Nov2006, Vol. 33 Issue 11, p3252; Thesaurus Term: MATHEMATICAL optimization; Thesaurus Term: ALGORITHMS; Subject Term: GENETIC algorithms; Subject Term: COMBINATORIAL optimization; Author-Supplied Keyword: Cooperating agents; Author-Supplied Keyword: Genetic algorithm; Author-Supplied Keyword: Multiple tasks; Author-Supplied Keyword: Task assignment; Author-Supplied Keyword: Uninhabited aerial vehicles; Number of Pages: 18p; Document Type: Article L3 - 10.1016/j.cor.2005.02.039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=20013939&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Gupta, Amit AU - Ketchum, Norma AU - Roehrborn, Claus G. AU - Schecter, Arnold AU - Aragaki, Corinne C. AU - Michalek, Joel E. T1 - Serum Dioxin, Testosterone, and Subsequent Risk of Benign Prostatic Hyperplasia: A Prospective Cohort Study of Air Force Veterans. JO - Environmental Health Perspectives JF - Environmental Health Perspectives Y1 - 2006/11// VL - 114 IS - 11 M3 - Article SP - 1649 EP - 1654 PB - Superintendent of Documents SN - 00916765 AB - BACKGROUND: Operation Ranch Hand veterans were involved in spraying herbicides, including Agent Orange, during the Vietnam War in 1962–1971; Agent Orange was contaminated with 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). It has been hypothesized that dioxins may be partially responsible for an increase of male reproductive tract disorders such as testicular cancer, cryptorchidism, and hypospadias. OBJECTIVES: In this study, our objective was to assess the effect of serum TCDD concentration on the risk of development of benign prostatic hyperplasia (BPH) and on serum testosterone levels. METHODS: This study was a longitudinal, prospective cohort study made up of U.S. Air Force veterans involved in Operation Ranch Hand. Other Air Force veterans who did not spray herbicides were included as comparisons. BPH was determined by medical record review and by medical examinations conducted during the study. Data were available for 971 Ranch Hand and 1,266 comparison veterans. We investigated the relationship between BPH and serum TCDD level using the Cox proportional hazards models adjusted for testosterone levels, body mass index (BMI), and the percentage change in BMI per year. RESULTS: In univariate and multivariate analyses, the risk of BPH decreased with increasing serum TCDD in the comparison group. The multivariate risk ratio for BPH in the comparison group was 0.84 (95% confidence interval, 0.73–0.98). Excluding men with prostate cancer, inflammatory or other prostatic diseases did not substantially alter the association. Serum testosterone levels were inversely associated with serum TCDD levels in both Ranch Hand and comparison groups. CONCLUSIONS: TCDD exposure at general population levels is associated with a decreasing risk of BPH with higher exposure levels. TCDD exposure is also negatively associated with serum testosterone levels. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Health Perspectives is the property of Superintendent of Documents and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Dioxins KW - Tetrachlorodibenzodioxin KW - Serum KW - Blood plasma KW - Benign prostatic hyperplasia KW - Prostate -- Aging KW - Testosterone KW - Androgens KW - Veterans -- United States KW - benign prostatic hyperplasia KW - BPH KW - dioxins KW - endocrine disruptors KW - persistent organic pollutants KW - Ranch Hand KW - TCDD KW - testosterone KW - Vietnam veterans N1 - Accession Number: 23151874; Gupta, Amit 1,2; Email Address: amit.gupta@utsouthwestern.edu; Ketchum, Norma 3; Roehrborn, Claus G. 1; Schecter, Arnold 2; Aragaki, Corinne C. 2; Michalek, Joel E. 4; Affiliations: 1: Department of Urology, University of Texas Southwestern Medical Center, Dallas, Dallas, Texas, USA; 2: University of Texas School of Public Health, Regional Campus, Dallas, Dallas, Texas, USA; 3: Air Force Research Laboratory, Brooks City-Base, Texas, USA; 4: Center for Epidemiology and Biostatistics, University of Texas Health Science Center, San Antonio, San Antonio, Texas, USA; Issue Info: Nov2006, Vol. 114 Issue 11, p1649; Thesaurus Term: Dioxins; Thesaurus Term: Tetrachlorodibenzodioxin; Subject Term: Serum; Subject Term: Blood plasma; Subject Term: Benign prostatic hyperplasia; Subject Term: Prostate -- Aging; Subject Term: Testosterone; Subject Term: Androgens; Subject Term: Veterans -- United States; Author-Supplied Keyword: benign prostatic hyperplasia; Author-Supplied Keyword: BPH; Author-Supplied Keyword: dioxins; Author-Supplied Keyword: endocrine disruptors; Author-Supplied Keyword: persistent organic pollutants; Author-Supplied Keyword: Ranch Hand; Author-Supplied Keyword: TCDD; Author-Supplied Keyword: testosterone; Author-Supplied Keyword: Vietnam veterans; NAICS/Industry Codes: 414510 Pharmaceuticals and pharmacy supplies merchant wholesalers; NAICS/Industry Codes: 325414 Biological Product (except Diagnostic) Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1289/ehp.8957 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=23151874&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hong, L. AU - Cui, N. AU - Bakich, M. AU - Layne, J. R. T1 - Multirate interacting multiple model particle filter for terrain-based ground target tracking. JO - IEE Proceedings -- Control Theory & Applications JF - IEE Proceedings -- Control Theory & Applications Y1 - 2006/11// VL - 153 IS - 6 M3 - Article SP - 721 EP - 731 PB - Institution of Engineering & Technology SN - 13502379 AB - Ground target tracking is a nonlinear filtering problem when it incorporates terrain and road constraints into system modelling and uses polar coordinate sensing. Furthermore, when tracking ground manoeuvring targets with an interacting multiple model approach, a non-Gaussian problem exists because of an inherent mixing operation. A multirate interacting multiple model particle filter (MRIMM-PF) is presented to effectively solve the problem of nonlinear and non-Gaussian tracking, with an emphasis on computational savings. The sample subset of each mode is updated at a different rate and mode switches are performed according to a Markov chain at a low rate. For a fixed number of samples, simulation results show that the MRIMM-PF significantly reduces computational costs, with comparable tracking performance to multiple model particle filter. [ABSTRACT FROM AUTHOR] AB - Copyright of IEE Proceedings -- Control Theory & Applications is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MARKOV processes KW - SIMULATION methods & models KW - MATHEMATICAL models KW - SYSTEMS theory KW - GAUSSIAN processes KW - NUMERICAL analysis N1 - Accession Number: 22114431; Hong, L. 1; Email Address: lhong@cs.wright.edu; Cui, N. 1; Bakich, M. 2; Layne, J. R. 2; Affiliations: 1: Department of Electrical Engineering, Wright State University, Dayton, OH 45435, USA; 2: Air Force Research Laboratory, SNAT, Sensors Directorate, WPAFB, OH 45433, USA; Issue Info: Nov2006, Vol. 153 Issue 6, p721; Thesaurus Term: MARKOV processes; Thesaurus Term: SIMULATION methods & models; Thesaurus Term: MATHEMATICAL models; Thesaurus Term: SYSTEMS theory; Subject Term: GAUSSIAN processes; Subject Term: NUMERICAL analysis; Number of Pages: 11p; Illustrations: 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1049/ip-cta:20050047 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=22114431&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Gans, Michael J. T1 - Channel Capacity Between Antenna Arrays — Part II: Amplifier Noise Dominates. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2006/11// VL - 54 IS - 11 M3 - Article SP - 1983 EP - 1992 SN - 00906778 AB - In this paper (Part II of two), we continue examining the use of space-time coding techniques to achieve very-high spectral efficiencies in highly scattering environments, using multiple transmit and receive antennas. The goal is to increase as much as possible the number of antenna elements, which is particularly difficult at the remote station, which usually has a more limited space allotted to the antenna array than at the base station. Under the assumption that sky noise was the dominant noise source, Part I addressed the channel-capacity effects of mutual impedance between antenna elements in the remote array, and the correlation between the signal and noise fields received by these elements. In Part II, we consider the same effects under the assumption that amplifier noise is the dominant noise source. The question of how closely the receiving array elements can be spaced depends on how precisely the channel can be estimated. This is related to the high-precision requirement experienced with supergain antenna arrays. The supergain connection is made explicit by showing that the optimum channel capacity for the case of a single transmitting element is achieved by using the supergain weights for the receiving array. To indicate the effect of noisy channel estimation, the loss in receiver antenna gain due to noise in weight estimates is computed with a simple simulation model of scattered propagation for the single-transmitting-antenna element case. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Decoders (Electronics) KW - Electronic amplifiers KW - Broadband communication systems KW - Antennas (Electronics) KW - Transmitting antennas KW - Antenna arrays KW - Noise generators (Electronics) KW - Aerodynamic noise KW - MIMO systems KW - Rayleigh scattering KW - Amplifiers KW - antenna arrays KW - channel capacity KW - multiple-input multiple-output (MIMO) KW - mutual coupling KW - noise correlation N1 - Accession Number: 23249277; Gans, Michael J. 1; Email Address: gansm@rl.af.mil; Affiliations: 1: Air Force Research Laboratory, Information Directorate, Rome, NY 13441 USA; Issue Info: Nov2006, Vol. 54 Issue 11, p1983; Thesaurus Term: Decoders (Electronics); Thesaurus Term: Electronic amplifiers; Thesaurus Term: Broadband communication systems; Subject Term: Antennas (Electronics); Subject Term: Transmitting antennas; Subject Term: Antenna arrays; Subject Term: Noise generators (Electronics); Subject Term: Aerodynamic noise; Subject Term: MIMO systems; Subject Term: Rayleigh scattering; Author-Supplied Keyword: Amplifiers; Author-Supplied Keyword: antenna arrays; Author-Supplied Keyword: channel capacity; Author-Supplied Keyword: multiple-input multiple-output (MIMO); Author-Supplied Keyword: mutual coupling; Author-Supplied Keyword: noise correlation; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; Number of Pages: 10p; Illustrations: 1 Black and White Photograph, 2 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1109/TCOMM.2006.881366 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=23249277&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Lowe, James K. T1 - Homeland Security: Operations Research Initiatives and Applications. JO - Interfaces JF - Interfaces Y1 - 2006/11//Nov/Dec2006 VL - 36 IS - 6 M3 - Article SP - 483 EP - 485 PB - INFORMS: Institute for Operations Research SN - 00922102 AB - The article presents a letter from the editor of "Interfaces" concerning the November-December, 2006 issue. The issue focuses on the United States Department of Homeland Security's Operations Research division, which aims to give the department a scientific framework for considering problems and decisions. In addition, articles within the issue also discuss other aspects of homeland security, ranging from attack detection, identification, and prevention to response preparedness in the case of successful attacks. KW - GOVERNMENT policy KW - INTERNATIONAL relations KW - COUNTERTERRORISM KW - NATIONAL security KW - NATIONAL security -- United States KW - MILITARY policy KW - airport security KW - bioterrorism KW - counterterrorism KW - decision-support systems KW - emergency planning KW - homeland security applications KW - infrastructure protection KW - optimization KW - pandemic response KW - simulation KW - UNITED States. Dept. of Homeland Security N1 - Accession Number: 23639039; Lowe, James K. 1; Email Address: jim.lowe@usafa.af.mil; Affiliations: 1: Department of Management, 2354 Fairchild Drive, Suite 6H-238 US Air Force Academy, Colorado 80840; Issue Info: Nov/Dec2006, Vol. 36 Issue 6, p483; Thesaurus Term: GOVERNMENT policy; Thesaurus Term: INTERNATIONAL relations; Subject Term: COUNTERTERRORISM; Subject Term: NATIONAL security; Subject Term: NATIONAL security -- United States; Subject Term: MILITARY policy; Author-Supplied Keyword: airport security; Author-Supplied Keyword: bioterrorism; Author-Supplied Keyword: counterterrorism; Author-Supplied Keyword: decision-support systems; Author-Supplied Keyword: emergency planning; Author-Supplied Keyword: homeland security applications; Author-Supplied Keyword: infrastructure protection; Author-Supplied Keyword: optimization; Author-Supplied Keyword: pandemic response; Author-Supplied Keyword: simulation ; Company/Entity: UNITED States. Dept. of Homeland Security; NAICS/Industry Codes: 911410 Foreign affairs; NAICS/Industry Codes: 928120 International Affairs; NAICS/Industry Codes: 928110 National Security; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=23639039&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Kolonay, Raymond M. AU - Eastep, Franklin E. T1 - Optimal Scheduling of Control Surfaces on Flexible Wings to Reduce Induced Drag. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2006/11//Nov/Dec2006 Y1 - 2006/11//Nov/Dec2006 VL - 43 IS - 6 M3 - Article SP - 1655 EP - 1655 SN - 00218669 AB - Induced drag on flexible wings is reduced at off-design cruise conditions with simulated active conformal control surface deflections. An inverse optimization technique is used to manipulate the spanwise distribution of load. The method is demonstrated on two cases, a simple rectangular wing with a beam model and a fighter wing with a fully built-up finite element structural model. The control surfaces are deflected to redistribute the lift on the wing while maintaining a two degrees of freedom (lift and pitch) flexible trimmed flight condition. Iteratively optimizing an approximate problem eliminates the need for the trimmed angle of attack and the elevator deflections to participate in the design optimization as free variables. Only the control surface deflections are used to match the desired elliptic load distribution, which in turn is shown to produce the minimum induced drag according to calculations by a Trefftz-plane technique. The automated structural optimization system program is used for creating a complex structural model, a realistic linear aerodynamic prediction technique, and a free flying trim analysis. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - FIGHTER planes -- Wings KW - FINITE element method KW - AERODYNAMICS KW - DRAG (Aerodynamics) N1 - Accession Number: 23632224; Source Information: Nov/Dec2006, Vol. 43 Issue 6, p1655; Subject Term: AIRPLANE wings; Subject Term: FIGHTER planes -- Wings; Subject Term: FINITE element method; Subject Term: AERODYNAMICS; Subject Term: DRAG (Aerodynamics); Subject Term: ; Number of Pages: 1p; ; Document Type: Article; L3 - 10.2514/1.14604 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=23632224&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ulrich, Marybeth P. AU - Cook, Martin L. T1 - US Civil Military Relations since 9/11: Issues in Ethics and Policy DevelopmentThe views expressed in this article are those of the authors and do not necessarily reflect the official policy or position of the US Army, the US Air Force, the Department of Defense, or the US Government. JO - Journal of Military Ethics JF - Journal of Military Ethics J1 - Journal of Military Ethics PY - 2006/11// Y1 - 2006/11// VL - 5 IS - 3 M3 - Article SP - 161 EP - 182 PB - Routledge SN - 15027570 AB - A perennial ethical issue for senior US military officers lies in the tension between their responsibility to cultivate and offer professional military advice, on the one hand, and their Constitutional subordination to civilian leaders who may or may not heed military advice. In some periods (e.g., the end of the Clinton Administration), the military's dissatisfaction with their civilian masters is great. In those moments, concerns are raised that the military may subvert the will of civilian leaders (probably in subtle ways). At other historical moments (some would argue the current war in Iraq is one such moment), the concern is the opposite: that the military's subordination to civilian leaders may lead them to acquiesce in policies that their professional military judgment causes them to think unwise or misguided. This paper articulates some constant standards to guide that debate. The authors argue that it is important to remind military leaders that their loyalties and subordination under the US Constitution is not only to the President, Secretary of Defense, and other members of the Executive Branch of government. In addition, the Constitution clearly requires and expects that senior military leaders will give unvarnished and honest professional opinions to the Congress—even if that irritates the Administration. But further difficulties remain because the Administration itself appoints senior military leaders. This paper attempts to distinguish the in principle question of the ethical requirement that senior leaders give honest and direct professional advice from the real-world reality that officers may require moral courage and a willingness to experience displeasure and even dismissal from their positions if they do so. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Military Ethics is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY officers KW - ETHICS KW - RESPONSIBILITY KW - SUBORDINATIONISM KW - CIVIL supremacy over the military KW - CIVIL-military relations N1 - Accession Number: 22295470; Source Information: Nov2006, Vol. 5 Issue 3, p161; Subject Term: MILITARY officers; Subject Term: ETHICS; Subject Term: RESPONSIBILITY; Subject Term: SUBORDINATIONISM; Subject Term: CIVIL supremacy over the military; Subject Term: CIVIL-military relations; Subject Term: ; Number of Pages: 22p; ; Document Type: Article; L3 - 10.1080/15027570600913320 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=22295470&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Jennings, William W. AD - US Air Force Academy T1 - Disaggregated TIPS: The Case for Disaggregating Inflation-Lined Bonds into Bonds Linked to Narrower CPI Components: Slicing and Dicing TIPS JO - Journal of Pension Economics and Finance JF - Journal of Pension Economics and Finance Y1 - 2006/11// VL - 5 IS - 3 SP - 325 EP - 343 SN - 14747472 N1 - Accession Number: 0950483; Keywords: CPI; Consumer Price Index; Inflation; Prices; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 200801 N2 - Investors generally face inflation-linked obligations--a fact contributing to the popularity of TIPS and other inflation-linked bonds. With TIPS, one characterization of inflation, the Consumer Price Index, applies to all investors. Investors, however, face different inflation. To date, these heterogeneous needs have not been addressed by the inflation-linked marketplace. The paper describes the case for and mechanics of splitting TIPS into disaggregated TIPS matched to components of the Consumer Price Index. Disaggregated TIPS better address the risks of investors' specific real liabilities. A case study highlights disaggregated TIPS applicability to retirees with heavier post-retirement medical needs. KW - Price Level; Inflation; Deflation E31 KW - National Debt; Debt Management; Sovereign Debt H63 KW - Health: General I10 KW - Economics of the Elderly; Economics of the Handicapped; Non-labor Market Discrimination J14 KW - Retirement; Retirement Policies J26 L3 - http://journals.cambridge.org/action/displayBackIssues?jid=PEF UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0950483&site=ehost-live&scope=site UR - http://journals.cambridge.org/action/displayBackIssues?jid=PEF DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Grant, Kevin P. AU - Cashman, William M. AU - Christensen, David S. T1 - DELIVERING PROJECTS ON TIME. JO - Research Technology Management JF - Research Technology Management Y1 - 2006/11//Nov/Dec2006 VL - 49 IS - 6 M3 - Article SP - 52 EP - 58 PB - Routledge SN - 08956308 AB - OVERVIEW: Meaningful risk analysis can dramatically improve the likelihood of project managers delivering major system development projects on time. At issue are the questions, "Which risk events are most likely to occur?" and "Which risk events will have the most severe impact on the project schedule? " A study of 22 major aerospace system development programs produced a prompt list to support project managers engaged in risk identification. The study also yielded a risk map based upon an empirical study of the reasons for adverse schedule variances on the 22 programs over a ten-year period. The lack of required parts and materials when needed, a lack of requisite information, design changes, and difficulty starting, are among the risk events that most warrant managerial attention and appropriate risk mitigation and control. [ABSTRACT FROM PUBLISHER] AB - Copyright of Research Technology Management is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RISK assessment KW - PROJECT management KW - SYSTEMS development KW - AERONAUTICS KW - EVALUATION KW - project delays KW - risk assessment KW - schedule risk N1 - Accession Number: 23119319; Grant, Kevin P. 1; Email Address: kgrant@utsa.edu; Cashman, William M. 2; Email Address: william.cashman@pentagon.af.mil; Christensen, David S. 3; Email Address: ChristensenD@suu.edu; Affiliations: 1: Associate professor, College of Business, University of Texas, San Antonio,; 2: Project manager, United States Air Force; 3: Professor of accounting, Southern Utah University, Cedar City; Issue Info: Nov/Dec2006, Vol. 49 Issue 6, p52; Thesaurus Term: RISK assessment; Thesaurus Term: PROJECT management; Thesaurus Term: SYSTEMS development; Subject Term: AERONAUTICS; Subject Term: EVALUATION; Author-Supplied Keyword: project delays; Author-Supplied Keyword: risk assessment; Author-Supplied Keyword: schedule risk; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; NAICS/Industry Codes: 541611 Administrative Management and General Management Consulting Services; NAICS/Industry Codes: 541619 Other management consulting services; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ent&AN=23119319&site=ehost-live&scope=site DP - EBSCOhost DB - ent ER - TY - GEN AU - McGuire, Thomas T1 - The Flow of War and Time Measured in the River-Run of Dale Ritterbusch's Lyric Poetry. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2006/11// Y1 - 2006/11// VL - 18 IS - 1/2 M3 - Poetry Review SP - 96 EP - 103 PB - US Air Force Academy English Department SN - 10466967 AB - The article offers poetry criticism of the lyric poetry of Dale Ritterbusch. It focuses on the poet's literary style and the use of themes regarding the impact of the aftermath of the Vietnam War on its veterans in the published collection "Far From the Temple of Heaven." Poems discussed include "World Series, 1968, Southeast Asia," "Green Tea," and "Canoeing Down the Quetico, 20 Years After." KW - POETRY (Literary form) -- History & criticism KW - RITTERBUSCH, Dale KW - FAR From the Temple of Heaven (Book) KW - VIETNAM War, 1961-1975 -- Literature & the war KW - LYRIC poetry -- History & criticism KW - WORLD Series, 1968, Southeast Asia (Poem) KW - GREEN Tea (Poem) KW - CANOEING Down the Quetico, 20 Years After (Poem) N1 - Accession Number: 24391046; Source Information: 2006, Vol. 18 Issue 1/2, p96; Subject Term: POETRY (Literary form) -- History & criticism; Subject Term: RITTERBUSCH, Dale; Subject Term: FAR From the Temple of Heaven (Book); Subject Term: VIETNAM War, 1961-1975 -- Literature & the war; Subject Term: LYRIC poetry -- History & criticism; Subject Term: WORLD Series, 1968, Southeast Asia (Poem); Subject Term: GREEN Tea (Poem); Subject Term: CANOEING Down the Quetico, 20 Years After (Poem); Subject Term: ; Number of Pages: 8p; ; Document Type: Poetry Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=24391046&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Newmiller, William T1 - Articles of War. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2006/11// Y1 - 2006/11// VL - 18 IS - 1/2 M3 - Book Review SP - 335 EP - 337 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents a review of the book "Articles of War," by Nick Arvin. KW - ARTICLES of War (Book) KW - ARVIN, Nick KW - WORLD War, 1939-1945 KW - FICTION N1 - Accession Number: 24391078; Source Information: 2006, Vol. 18 Issue 1/2, p335; Subject Term: ARTICLES of War (Book); Subject Term: ARVIN, Nick; Subject Term: WORLD War, 1939-1945; Subject Term: FICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=24391078&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Enstey, Eric T1 - Where Soldiers Fear to Tread: A Relief Worker's Tale of Survival. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2006/11// Y1 - 2006/11// VL - 18 IS - 1/2 M3 - Book Review SP - 338 EP - 339 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents a review of the book "Where Soldiers Fear to Tread: A Relief Workers' Tale of Survival," by John S. Burnett. KW - WHERE Soldiers Fear to Tread: A Relief Worker's Tale of Survival (Book) KW - BURNETT, John S. KW - AUTOBIOGRAPHY KW - NONFICTION N1 - Accession Number: 24391079; Source Information: 2006, Vol. 18 Issue 1/2, p338; Subject Term: WHERE Soldiers Fear to Tread: A Relief Worker's Tale of Survival (Book); Subject Term: BURNETT, John S.; Subject Term: AUTOBIOGRAPHY; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=24391079&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Roy, Bill T1 - most succinctly bred. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2006/11// Y1 - 2006/11// VL - 18 IS - 1/2 M3 - Book Review SP - 356 EP - 358 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents a review of the book "most succinctly bred," by Alex Vernon. KW - MOST Succinctly Bred (Book) KW - VERNON, Alex KW - AUTOBIOGRAPHY KW - NONFICTION N1 - Accession Number: 24391085; Source Information: 2006, Vol. 18 Issue 1/2, p356; Subject Term: MOST Succinctly Bred (Book); Subject Term: VERNON, Alex; Subject Term: AUTOBIOGRAPHY; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=24391085&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2006-21610-003 AN - 2006-21610-003 AU - Robinson, Daniel H. AU - Katayama, Andrew D. AU - Beth, Alicia AU - Odom, Susan AU - Hsieh, Ya-Ping AU - Vanderveen, Arthur T1 - Increasing Text Comprehension and Graphic Note Taking Using a Partial Graphic Organizer. JF - The Journal of Educational Research JO - The Journal of Educational Research JA - J Educ Res Y1 - 2006/11//Nov-Dec, 2006 VL - 100 IS - 2 SP - 103 EP - 111 CY - US PB - Heldref Publications SN - 0022-0671 SN - 1940-0675 AD - Robinson, Daniel H., Department of Educational Psychology, University of Texas at Austin, SZB 504, Austin, TX, US, 78712-1296 N1 - Accession Number: 2006-21610-003. Partial author list: First Author & Affiliation: Robinson, Daniel H.; University of Texas, Austin, TX, US. Other Publishers: Taylor & Francis. Release Date: 20070312. Correction Date: 20111010. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Academic Achievement; Comprehension; Graphical Displays; Note Taking. Classification: Academic Learning & Achievement (3550). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 9. Issue Publication Date: Nov-Dec, 2006. AB - In 3 quasi-experiments using intact classrooms and 1 true experiment using random assignment, students completed partially complete graphic organizers (GOs) or studied complete GOs that covered course content. The partial task led to increased overall examination performance in all experiments. Also, the authors measured students' note-taking style (linear vs. graphic) at the beginning and end of the course. In all experiments, GO note taking increased. The increases were greatest when the authors presented the partial task in a computer environment with a timed, forced-choice task. Implications for using the partial GO task in the classroom, as well as future note-taking research directions are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - text comprehension KW - graphic note taking KW - partial graphic organizer KW - examination performance KW - classrooms KW - 2006 KW - Academic Achievement KW - Comprehension KW - Graphical Displays KW - Note Taking KW - 2006 DO - 10.3200/JOER.100.2.103-111 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-21610-003&site=ehost-live&scope=site UR - dan.robinson@mail.utexas.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-22409-004 AN - 2006-22409-004 AU - Stith, Sandra AU - Pruitt, Irene AU - Dees, Jemeg AU - Fronce, Michael AU - Green, Narkia AU - Som, Anurag AU - Linkh, David T1 - Implementing Community-Based Prevention Programming: A Review of the Literature. JF - The Journal of Primary Prevention JO - The Journal of Primary Prevention JA - J Prim Prev Y1 - 2006/11// VL - 27 IS - 6 SP - 599 EP - 617 CY - Germany PB - Springer SN - 0278-095X SN - 1573-6547 AD - Stith, Sandra, Human Development Department, Virginia Tech, 7054 Haycock Rd., Falls Church, VA, US, 22043 N1 - Accession Number: 2006-22409-004. PMID: 17051431 Partial author list: First Author & Affiliation: Stith, Sandra; Marriage and Family Therapy Program, Virginia Tech, Falls Church, VA, US. Release Date: 20070226. Correction Date: 20090907. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Community Services; Prevention. Classification: Community & Social Services (3373). Population: Human (10). References Available: Y. Page Count: 19. Issue Publication Date: Nov, 2006. AB - In this review of literature we identify consensually validated conclusions and recommendations for implementing community based prevention programming. The general recommendations identified from the literature are as follows: (1) a community must be ready for a prevention program, (2) effective community coalitions must be developed, (3) programming must fit the community, (4) program fidelity should be maintained, and (5) adequate resources, training, technical assistance, and attention to evaluation are necessary. The existing research and expert opinion in the field of prevention science indicate that when these crucial recommendations are incorporated into community prevention practice, the effectiveness of prevention efforts is optimized. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - community based prevention programming KW - community based programmes KW - 2006 KW - Community Services KW - Prevention KW - 2006 U1 - Sponsor: US Department of Agriculture, Cooperative State Research, Education and Extension Service, US. Recipients: No recipient indicated U1 - Sponsor: United States Air Force, US. Grant: 2004-48353-03054. Recipients: No recipient indicated DO - 10.1007/s10935-006-0062-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-22409-004&site=ehost-live&scope=site UR - sstith@vt.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-22495-005 AN - 2006-22495-005 AU - Boyle, Stephen H. AU - Michalek, Joel E. AU - Suarez, Edward C. T1 - Covariation of Psychological Attributes and Incident Coronary Heart Disease in U.S. Air Force Veterans of the Vietnam War. JF - Psychosomatic Medicine JO - Psychosomatic Medicine Y1 - 2006/11//Nov-Dec, 2006 VL - 68 IS - 6 SP - 844 EP - 850 CY - US PB - Lippincott Williams & Wilkins SN - 0033-3174 SN - 1534-7796 AD - Boyle, Stephen H., Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, PO Box 3328, Durham, NC, US, 27710 N1 - Accession Number: 2006-22495-005. PMID: 17079707 Partial author list: First Author & Affiliation: Boyle, Stephen H.; Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC, US. Release Date: 20070507. Correction Date: 20121015. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Grant Information: Suarez, Edward C. Major Descriptor: Anger; Anxiety; Depression (Emotion); Heart Disorders; Hostility. Minor Descriptor: Air Force Personnel; Military Veterans; Risk Factors. Classification: Cardiovascular Disorders (3295); Military Psychology (3800). Population: Human (10); Male (30). Location: US. Age Group: Adulthood (18 yrs & older) (300); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360); Aged (65 yrs & older) (380). Tests & Measures: Obvious Depression Scale; Buss-Perry Anger Scale; Cook-Medley Hostility Scale; Minnesota Multiphasic Personality Inventory-2 DOI: 10.1037/t15120-000; Beck Depression Inventory DOI: 10.1037/t00741-000; Minnesota Multiphasic Personality Inventory (MMPI); Spielberger State Trait Anxiety Inventory. Methodology: Empirical Study; Followup Study; Longitudinal Study; Quantitative Study. References Available: Y. Page Count: 7. Issue Publication Date: Nov-Dec, 2006. AB - Objective: The purpose of the present investigation was to examine the prospective associations of hostility, anger, depression, and anxiety, alone and in combination, to incident coronary heart disease (CHD). Methods: Subjects were 2105 men who participated in the Air Force Health Study, a 20-year study designed to evaluate the effects of herbicide exposure on various health outcomes in Air Force veterans of Operation Ranch Hand. Psychological attributes were assessed in 1985 using scales constructed from the Minnesota Multiphasic Personality Inventory. Participants were followed for an average of 15 years for evidence of ischemic heart disease (International Classification of Diseases codes 410-414, 428.4, or 36). The relation between psychological attributes and CHD was examined with Cox proportional hazard models. Results: Adjusting for CHD risk factors, depression, anxiety, hostility, and trait anger were significant predictors of incident CHD. In addition, a factor analytically derived psychological risk factor composite score was the strongest predictor of CHD. Conclusions: These results suggest that the covariation of hostility, anger, depression, and anxiety accounts for the increased risk of CHD associated with each individual factor. The results of this study challenge the conventional approach of examining these psychological attributes in isolation. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - hostility KW - anger KW - depression KW - anxiety KW - coronary heart disease KW - psychological attributes KW - Air Force KW - Vietnam War veterans KW - 2006 KW - Anger KW - Anxiety KW - Depression (Emotion) KW - Heart Disorders KW - Hostility KW - Air Force Personnel KW - Military Veterans KW - Risk Factors KW - 2006 U1 - Sponsor: National Institutes of Health. Grant: HL67459. Recipients: Suarez, Edward C. DO - 10.1097/01.psy.0000240779.55022.ff UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-22495-005&site=ehost-live&scope=site UR - suare001@mc.duke.edu UR - boyle020@mc.duke.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Baizert, P. AU - Hale, T. B. AU - Temple, M. A. AU - Wicks, M. C. T1 - Forward-looking radar GMTI benefits using a linear frequency diverse array. JO - Electronics Letters JF - Electronics Letters Y1 - 2006/10/26/ VL - 42 IS - 22 M3 - Article SP - 1311 EP - 1312 SN - 00135194 AB - The ability to suppress range ambiguous clutter is difficult for forward-looking arrays in GHTI processing. Use of linear frequency diverse array (FDA) is proposed, whereby each array channel operates at a different frequency and produces a range dependent pattern. The FDA significantly increases output signal-to-interference plus noise ratio (SINR) at the range ambiguous clutter Doppler, suggesting detection improvement. Output SINR is shown to increase by as much as 40 dB when compared to a constant frequency array. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC systems KW - ELECTRONIC apparatus & appliances KW - RADAR KW - FREQUENCIES of oscillating systems KW - ELECTRONICS KW - CATHODE ray oscillographs N1 - Accession Number: 22919891; Baizert, P. 1; Hale, T. B. 1; Temple, M. A. 1; Email Address: Michael.Temple@afit.edu; Wicks, M. C. 2; Affiliations: 1: Air Force Institute of Technology, Department of Electrical Engineering (AFIT/ENG), USA; 2: Air Force Research Laboratory, Sensors Directorate, Radar Signal Processing Branch (AFRL/SNRT), Rome, USA; Issue Info: 10/26/2006, Vol. 42 Issue 22, p1311; Subject Term: ELECTRONIC systems; Subject Term: ELECTRONIC apparatus & appliances; Subject Term: RADAR; Subject Term: FREQUENCIES of oscillating systems; Subject Term: ELECTRONICS; Subject Term: CATHODE ray oscillographs; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 2p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1049/el:20062791 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=22919891&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - CONF AU - Lai, Shu T. AU - Garrett, Henry B. AU - Mengu Cho AU - Hilgers, Alain T1 - Special Issue on Spacecraft Charging Technology. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2006/10/02/Oct2006 Part 2 Of 4 Y1 - 2006/10/02/Oct2006 Part 2 Of 4 VL - 34 IS - 5 M3 - Proceeding SP - 1946 EP - 1947 SN - 00933813 AB - Information about several papers discussed at the 9th Spacecraft Charging Technology Conference on spacecraft charging, spacecraft interactions and other related issues is presented. Space weather has been discussed of which it was considered a major driving force controlling the space plasma parameters. The observations of the spatial and time evolution of deep charging inside dielectrics were also presented. KW - CONFERENCES & conventions KW - ASTRONAUTICS -- Congresses KW - ROCKETRY -- Congresses KW - SPACE environment -- Congresses KW - SPACE vehicles -- Electrostatic charging KW - ELECTROSTATICS N1 - Accession Number: 23838593; Source Information: Oct2006 Part 2 Of 4, Vol. 34 Issue 5, p1946; Subject Term: CONFERENCES & conventions; Subject Term: ASTRONAUTICS -- Congresses; Subject Term: ROCKETRY -- Congresses; Subject Term: SPACE environment -- Congresses; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: ELECTROSTATICS; Subject Term: ; Number of Pages: 2p; ; Illustrations: 4 Black and White Photographs; ; Document Type: Proceeding; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=23838593&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Lai, Shu T. AU - Tautz, Maurice F. T1 - Aspects of Spacecraft Charging in Sunlight. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2006/10/02/Oct2006 Part 2 Of 4 Y1 - 2006/10/02/Oct2006 Part 2 Of 4 VL - 34 IS - 5 M3 - Article SP - 2053 EP - 2061 SN - 00933813 AB - This paper is an overview of spacecraft charging in sunlight. The daylight photoelectron flux emitted from spacecraft surfaces normally exceeds the ambient electron flux. As a result, charging of spacecraft surfaces to positive voltage is expected to occur in sunlight. Indeed, spacecraft are often observed to charge to low positive voltages in sunlight. However, spacecraft can charge to high-level (kiloelectronvolts) negative voltages in sunlight. Why do spacecraft charge negatively in sunlight? One chief reason concerns differential charging between the sunlit and dark sides. For a satellite with dielectric surfaces, an electric field builds up on the shaded surfaces and then wraps around to the sunlit side to form a potential barrier that suppresses the photoemission. A monopole-dipole (for zero spin) or monopole-quadrupole model (for fast spin) describes the differential charging potential distribution due to blocked photoelectrons. It is shown that these cases are similar to a more general multipole potential field in that the surface node potentials satisfy an approximate linear relation. These cases are all driven by the shade side charging so that the onset for charging is approximately the same in sunlight or eclipse if conduction currents through the spacecraft can be neglected. If conduction currents are important, potential barriers can develop on the dark side, leading to suppression of the secondary emission currents and modification of charging onset. The results were briefly compared with observations. Another important reason for negative charging concerns reflectance. Highly reflective mirrors generate substantially reduced photoemission so that current balance can be achieved without barrier formation. The onset for charging in this case depends strongly on the reflectivity. The critical temperature for charging of surface materials under space substorm conditions with different ratios of photoemission current to electron ambient current, corresponding to varying satellite surface reflectivity values, was calculated. Numerical results, which show that with substantially reduced photoemission, highly reflective surfaces charge in sunlight with the critical temperature for onset decreasing with increasing reflectivity, are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles -- Electrostatic charging KW - PHOTOELECTRONS KW - SOLAR energy KW - DIELECTRICS KW - ELECTRIC potential KW - ELECTRIC fields N1 - Accession Number: 23838606; Source Information: Oct2006 Part 2 Of 4, Vol. 34 Issue 5, p2053; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: PHOTOELECTRONS; Subject Term: SOLAR energy; Subject Term: DIELECTRICS; Subject Term: ELECTRIC potential; Subject Term: ELECTRIC fields; Subject Term: ; Number of Pages: 9p; ; Illustrations: 2 Black and White Photographs, 2 Diagrams, 5 Graphs; ; Document Type: Article; L3 - 10.1109/TPS.2006.883362 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=23838606&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Davis, V. A. AU - Mandell, M. J. AU - Rich, F. J. AU - Cooke, D. L. T1 - Reverse Trajectory Approach to Computing Ionospheric Currents to the Special Sensor Ultraviolet Limb Imager on DMSP. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2006/10/02/Oct2006 Part 2 Of 4 Y1 - 2006/10/02/Oct2006 Part 2 Of 4 VL - 34 IS - 5 M3 - Article SP - 2062 EP - 2070 SN - 00933813 AB - The special sensor ultraviolet limb imager was developed by the U.S. Naval Research Laboratory and is deployed on the Defense Meteorological Satellite Program (DMSP) F16 polar-orbiting spacecraft. The instrument is experiencing a level of noise that is, at times, interfering with its proper operation. The noise is correlated with the spacecraft chassis potential. The potentials about DMSP and the resulting ionospheric current entering the instrument were computed to determine if the noise could be due to this current. In order to obtain results of sufficient accuracy, it is necessary to use a reverse trajectory technique that effectively integrates over the thermal distribution of incident ions. The reverse trajectory technique is described in detail. Once the resistance between the mirror surface and the chassis is taken into account, the current computed using this approach shows the same dependence on the chassis potential as the observed noise, which supports the conjecture that ionospheric ions are responsible for the noise. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles KW - ARTIFICIAL satellites in telecommunication KW - IONOSPHERE KW - NOISE KW - ULTRAVIOLET astronomy KW - INDUSTRIAL research N1 - Accession Number: 23838607; Source Information: Oct2006 Part 2 Of 4, Vol. 34 Issue 5, p2062; Subject Term: SPACE vehicles; Subject Term: ARTIFICIAL satellites in telecommunication; Subject Term: IONOSPHERE; Subject Term: NOISE; Subject Term: ULTRAVIOLET astronomy; Subject Term: INDUSTRIAL research; Subject Term: ; Number of Pages: 9p; ; Illustrations: 1 Black and White Photograph, 10 Diagrams, 2 Graphs; ; Document Type: Article; L3 - 10.1109/TPS.2006.881931 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=23838607&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Mandell, Myron J. AU - Davis, Victoria A. AU - Cooke, David L. AU - Wheelock, Adrian T. AU - Roth, C. J. T1 - Nascap-2k Spacecraft Charging Code Overview. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2006/10/02/Oct2006 Part 2 Of 4 Y1 - 2006/10/02/Oct2006 Part 2 Of 4 VL - 34 IS - 5 M3 - Article SP - 2084 EP - 2093 SN - 00933813 AB - Nascap-2k is a modern spacecraft charging code, replacing the older codes NASA Charging Analyzer Program for GEosynchronous Orbit (NASCAP/GEO), NASA Charging Analyzer Program for Low-Earth Orbit (NASCAP/LEO), Potentials Of Large objects in the Auroral Region (POLAR), and Dynamic Plasma Analysis Code (DynaPAC). The code builds on the physical principles, mathematical algorithms, and user experience developed over three decades of spacecraft charging research. Capabilities include surface charging in geosynchronous and interplanetary orbits, sheath, and wake structure, and current collection in low-Earth orbits, and auroral charging. External potential structure and particle trajectories are computed using a finite element method on a nested grid structure and may be visualized within the Nascap-2k interface. Space charge can be treated either analytically, self-consistently with particle trajectories, or consistent with imported plume densities. Particle-in-cell (PIC) capabilities are available to study dynamic plasma effects. Auxiliary programs to Nascap-2k include Object Toolkit (for developing spacecraft surface models) and GridTool (for constructing nested grid structures around spacecraft models). The capabilities of the code are illustrated by way of four examples: charging of a geostationary satellite, self-consistent potentials for a negative probe in a low-Earth orbit spacecraft wake, potentials associated with thruster plumes, and PIC calculations of plasma effects on a very low frequency (about 1 to 20 kHz) antenna. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles -- Electrostatic charging KW - AURORAS KW - UNITED States. National Aeronautics & Space Administration KW - GEOSTATIONARY satellites KW - PLASMA sheaths KW - PLUMES (Fluid dynamics) KW - FINITE element method N1 - Accession Number: 23838610; Source Information: Oct2006 Part 2 Of 4, Vol. 34 Issue 5, p2084; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: AURORAS; Subject Term: UNITED States. National Aeronautics & Space Administration; Subject Term: GEOSTATIONARY satellites; Subject Term: PLASMA sheaths; Subject Term: PLUMES (Fluid dynamics); Subject Term: FINITE element method; Subject Term: ; Number of Pages: 10p; ; Illustrations: 15 Diagrams, 1 Chart, 6 Graphs; ; Document Type: Article; L3 - 10.1109/TPS.2006.881934 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=23838610&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 106104583 T1 - Does obstructive sleep apnea affect aerobic fitness? AU - Guillermo LQ AU - Gal TJ AU - Mair EA Y1 - 2006/10// N1 - Accession Number: 106104583. Language: English. Entry Date: 20070615. Revision Date: 20150711. Publication Type: Journal Article; pictorial; research; tables/charts. Journal Subset: Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 0407300. KW - Oxygen Consumption -- Physiology KW - Physical Fitness -- Physiology KW - Sleep Apnea, Obstructive -- Physiopathology KW - Adolescence KW - Adult KW - Continuous Positive Airway Pressure KW - Descriptive Statistics KW - Exercise Test KW - Female KW - Male KW - Middle Age KW - Military Personnel KW - Prospective Studies KW - Retrospective Design KW - Sample Size KW - Sleep Apnea, Obstructive -- Therapy KW - Statistical Significance KW - United States KW - Human SP - 715 EP - 720 JO - Annals of Otology, Rhinology & Laryngology JF - Annals of Otology, Rhinology & Laryngology JA - ANN OTOL RHINOL LARYNGOL VL - 115 IS - 10 CY - Thousand Oaks, California PB - Sage Publications Inc. AB - OBJECTIVES: We sought to determine whether patients with obstructive sleep apnea (OSA) had an objective change in aerobic fitness during cycle ergometry compared to a normal population. The most accurate test of aerobic fitness is measurement of maximum oxygen consumption (VO2max) with cycle ergometry. METHODS: We performed a retrospective cohort analysis (247 patients with OSA) of VO2max from annual cycle ergometry tests compared to a large control group (normative data from 1.4 million US Air Force tests) in a tertiary care setting. RESULTS: Overall, individuals with OSA had increased VO2max when compared to the normalized US Air Force data (p < .001). Patients with an apnea-hypopnea index of greater than 20 demonstrated a decreased VO2max as compared to normalized values (p < .001). No differences in VO2max were observed after either medical or surgical therapy for OSA. CONCLUSIONS: Overall, in a US Air Force population, OSA does not predict a decrease in aerobic fitness as measured by cycle ergometry. However, patients with an apnea-hypopnea index of greater than 20 have a statistically significant decrease in aerobic fitness compared to the normal population. This study demonstrates the effects of OSA on aerobic fitness. Further correlation of fitness testing results with OSA severity and treatment is needed. SN - 0003-4894 AD - Department of Otolaryngology-Head and Neck Surgery, Wilford Hall United States Air Force Medical Center, San Antonio, Texas, USA. U2 - PMID: 17076091. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106104583&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Guillermo, Louis Q. AU - Gal, Thomas J. AU - Mair, Eric A. T1 - Does Obstructive Sleep Apnea Affect Aerobic Fitness? JO - Annals of Otology, Rhinology & Laryngology JF - Annals of Otology, Rhinology & Laryngology Y1 - 2006/10// VL - 115 IS - 10 M3 - Article SP - 715 EP - 720 SN - 00034894 AB - Objectives: We sought to determine whether patients with obstructive sleep apnea (OSA) had an objective change in aerobic fitness during cycle ergometry compared to a normal population. The most accurate test of aerobic fitness is measurement of maximum oxygen consumption (V̇o2max) with cycle ergometry. Methods: We performed a retrospective cohort analysis (247 patients with OSA) of V̇o2max from annual cycle ergometry tests compared to a large control group (normative data from 1.4 million US Air Force tests) in a tertiary care setting. Results: Overall, individuals with OSA had increased V̇o2max when compared to the normalized US Air Force data (p < .001). Patients with an apnea-hypopnea index of greater than 20 demonstrated a decreased V̇o2max as compared to normalized values (p < .00 1). No differences in V̇o2max were observed after either medical or surgical therapy for OSA. Conclusions: Overall, in a US Air Force population, OSA does not predict a decrease in aerobic fitness as measured by cycle ergometry. However, patients with an apnea-hypopnea index of greater than 20 have a statistically significant decrease in aerobic fitness compared to the normal population. This study demonstrates the effects of USA on aerobic fitness. Further correlation of fitness testing results with USA severity and treatment is needed. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of Otology, Rhinology & Laryngology is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROBIC exercises KW - SLEEP apnea syndromes KW - AEROBIC capacity KW - COHORT analysis KW - UNITED States. Air Force KW - UNITED States KW - aerobic fitness KW - cycle ergometry KW - obstructive sleep apnea N1 - Accession Number: 23138824; Guillermo, Louis Q. 1; Gal, Thomas J. 1; Mair, Eric A. 1; Email Address: emair@ceenta.com; Source Information: Oct2006, Vol. 115 Issue 10, p715; Subject: AEROBIC exercises; Subject: SLEEP apnea syndromes; Subject: AEROBIC capacity; Subject: COHORT analysis; Subject: UNITED States. Air Force; Geographic Terms: UNITED States; Author-Supplied Keyword: aerobic fitness; Author-Supplied Keyword: cycle ergometry; Author-Supplied Keyword: obstructive sleep apnea; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=23138824&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Coletta, Damon AU - Feaver, Peter D. T1 - Civilian Monitoring of U.S. Military Operations in the Information Age. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) J1 - Armed Forces & Society (0095327X) PY - 2006/10// Y1 - 2006/10// VL - 33 IS - 1 M3 - Article SP - 106 EP - 126 SN - 0095327X AB - Recent research on U.S. civil-military relations has applied principal-agent logic to analyze the post-cold war friction between civilian authorities and top military commanders. This article proposes a greater emphasis on bargaining to focus on the effects of new monitoring technologies available to the civilian principal in the information age. As monitoring capabilities increase and military agents perceive their autonomy disappearing, tacit bargaining over the president's level of resource commitment to a crisis should become more prevalent. This idea receives support from a comparison across case studies of the limited use of force taken from different technological eras. A new style of civil-military bargaining presents both challenges and opportunities to the traditional conception of military professionalism. [ABSTRACT FROM AUTHOR] AB - Copyright of Armed Forces & Society (0095327X) is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CIVIL-military relations KW - CIVIL defense KW - MILITARY government KW - ARMED Forces -- Political activity KW - MILITARY sociology KW - ARMED Forces KW - ARMIES KW - COMMAND of troops N1 - Accession Number: 23851059; Source Information: Oct2006, Vol. 33 Issue 1, p106; Subject Term: CIVIL-military relations; Subject Term: CIVIL defense; Subject Term: MILITARY government; Subject Term: ARMED Forces -- Political activity; Subject Term: MILITARY sociology; Subject Term: ARMED Forces; Subject Term: ARMIES; Subject Term: COMMAND of troops; Subject Term: ; Number of Pages: 21p; ; Document Type: Article; L3 - 10.1177/0095327X05282530 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=23851059&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Newman, Mark A. AU - Hatfield, Kirk AU - Hayworth, Joel AU - Rao, P. Suresh C. AU - Stauffer, Tom T1 - Inverse Characterization of NAPL Source Zones. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2006/10//10/1/2006 VL - 40 IS - 19 M3 - Article SP - 6044 EP - 6050 SN - 0013936X AB - This work presents a possible tool for inverse characterization of NAPL (nonaqueous phase liquid) source zones in terms of contaminant mass flux. A hybrid solution technique was applied that considers contaminant transport through a vertical flux plane. The hybrid solution technique takes advantage of the robust solution capabilities of simulated annealing (SA) and the uncertainty estimation capabilities of minimum relative entropy (MRE). The coupled technique (SA-MRE) provides probability density functions and confidence intervals that would not be available from an independent SA algorithm, and they are obtained more efficiently than if provided by an independent MRE algorithm. The SA-MRE method was used to characterize a NAPL source zone that was emplaced in a three-dimensional aquifer model. When dissolution experiments were complete, the aquifer model was excavated, and the distribution of NAPL zones was recorded using digital images of excavation grids. The excavation images were compiled into a three-dimensional representation of the source zone for comparison with and validation of modeling results. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Nonaqueous phase liquids KW - Pollutants KW - Mathematical models KW - Environmental sciences KW - Environmental protection KW - Entropy KW - Density functionals KW - Functional analysis KW - Algorithms N1 - Accession Number: 22703384; Newman, Mark A. 1; Email Address: markn@ce.ufl.edu; Hatfield, Kirk 1; Hayworth, Joel 2; Rao, P. Suresh C. 3; Stauffer, Tom 2; Affiliations: 1: Department of Civil and Coastal Engineering, University of Florida, P.O. Box 116580, Gainesville, Florida 32611-6450.; 2: Air Force Research Laboratory, Tyndall AFB, Florida.; 3: School of Civil Engineering, Purdue University, West Lafayette, Indiana.; Issue Info: 10/1/2006, Vol. 40 Issue 19, p6044; Thesaurus Term: Nonaqueous phase liquids; Thesaurus Term: Pollutants; Thesaurus Term: Mathematical models; Thesaurus Term: Environmental sciences; Thesaurus Term: Environmental protection; Subject Term: Entropy; Subject Term: Density functionals; Subject Term: Functional analysis; Subject Term: Algorithms; Number of Pages: 7p; Document Type: Article L3 - 10.1021/es060437s UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=22703384&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Nair, Naveen V. AU - Melapudi, Vikram R. AU - Jimenez, Hector R. AU - Xin Liu AU - Yiming Deng AU - Zhiwei Zeng AU - Udpa, Lalita AU - Moran, Thomas J. AU - Udpa, Satish S. T1 - A GMR-Based Eddy Current System for NDE of Aircraft Structures. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics J1 - IEEE Transactions on Magnetics PY - 2006/10// Y1 - 2006/10// VL - 42 IS - 10 M3 - Article SP - 3312 EP - 3314 SN - 00189464 AB - Onsite real-time nondestructive evaluation of aircraft using eddy current techniques has gained significance in the past few years. In this paper, emphasis is placed on developing a flexible and a fast real-time inspection system using giant magnetoresistive (GMR) field sensors. Experimental signals are compared with finite-element model (FEM) model simulations and signals acquired using traditional data acquisition methods. Several advantages of the improved design are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETORESISTANCE KW - GALVANOMAGNETIC effects KW - EDDY currents (Electric) KW - ELECTRIC resistance KW - MAGNETIC fields KW - NONDESTRUCTIVE testing KW - AIRFRAMES N1 - Accession Number: 22739732; Source Information: Oct2006, Vol. 42 Issue 10, p3312; Subject Term: MAGNETORESISTANCE; Subject Term: GALVANOMAGNETIC effects; Subject Term: EDDY currents (Electric); Subject Term: ELECTRIC resistance; Subject Term: MAGNETIC fields; Subject Term: NONDESTRUCTIVE testing; Subject Term: AIRFRAMES; Subject Term: ; Number of Pages: 3p; ; Illustrations: 3 Graphs; ; Document Type: Article; L3 - 10.1109/TMAG.2006.879820 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=22739732&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Arostegui, Marvin A. AU - Kadipasaoglu, Sukran N. AU - Khumawala, Basheer M. T1 - An empirical comparison of Tabu Search, Simulated Annealing, and Genetic Algorithms for facilities location problems JO - International Journal of Production Economics JF - International Journal of Production Economics Y1 - 2006/10// VL - 103 IS - 2 M3 - Article SP - 742 EP - 754 SN - 09255273 AB - Abstract: Algorithms to solve Facility Location Problems (FLP) optimally suffer from combinatorial explosion and resources required to solve such problems repeatedly as required in practical applications become prohibitive. In these cases heuristic methods are the only viable alternative. We compare the relative performance of Tabu Search (TS), Simulated Annealing (SA) and Genetic Algorithms (GA) on various types of FLP under time-limited, solution-limited, and unrestricted conditions. The results indicate that TS shows very good performance in most cases. The performance of SA and GA are more partial to problem type and the criterion used. Thus, in general we may conclude that TS should be tried first to the extent that it always yields as good or better results and is easy to develop and implement. [Copyright &y& Elsevier] AB - Copyright of International Journal of Production Economics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - MATHEMATICAL optimization KW - MATHEMATICAL analysis KW - GENETIC algorithms KW - Combinatorial optimization KW - Facility location KW - Genetic Algorithms KW - Simulated Annealing KW - Tabu Search N1 - Accession Number: 21575757; Arostegui, Marvin A. 1; Kadipasaoglu, Sukran N. 2; Khumawala, Basheer M. 2; Email Address: bkhumawala@uh.edu; Affiliations: 1: United States Air Force, USA; 2: Bauer College of Business, Decision and Information Sciences Department, University of Houston, 270D Melcher Hall, Houston TX 77204 6027, USA; Issue Info: Oct2006, Vol. 103 Issue 2, p742; Thesaurus Term: ALGORITHMS; Thesaurus Term: MATHEMATICAL optimization; Thesaurus Term: MATHEMATICAL analysis; Subject Term: GENETIC algorithms; Author-Supplied Keyword: Combinatorial optimization; Author-Supplied Keyword: Facility location; Author-Supplied Keyword: Genetic Algorithms; Author-Supplied Keyword: Simulated Annealing; Author-Supplied Keyword: Tabu Search; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.ijpe.2005.08.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=21575757&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Birman, Victor AU - Byrd, Larry W. T1 - Functionally Graded Stitched Laminates: Illustration on the Example of a Double Cantilever Beam. JO - Journal of Aerospace Engineering JF - Journal of Aerospace Engineering J1 - Journal of Aerospace Engineering PY - 2006/10// Y1 - 2006/10// VL - 19 IS - 4 M3 - Article SP - 217 EP - 226 PB - American Society of Civil Engineers SN - 08931321 AB - Although stitched laminates have been shown effective in preventing delamination failure, the presence of stitches results in a degraded in-plane strength and stiffness in such structures. The solution suggested in the paper is based on using stitches only in a part of the structure where they serve as arrestors of delamination cracks, while the part subject to considerable in-plane loading could remain unstitched. This approach, that could be called “functionally graded stitching,” is considered on the example of a double cantilever beam (DCB) with a preexisting delamination crack that has penetrated into the stitched region of the beam. As is shown in the paper, the distribution of stitches in a functionally graded DCB (and in any other laminated structure) should be chosen to prevent three major failure modes. These modes include the failure of the stitches, bending failure of the unstitched delaminated section of the structure, and continuous crack propagation through the stitched region. The results obtained in the paper for the static problem clearly illustrate the feasibility of using functionally graded stitched laminates retaining in-plane strength and stiffness, while providing barriers to delamination cracks in less loaded regions of the structure. Additionally, the approach to the solution of the dynamic problem presented in the paper may be applied to the analysis of fatigue delamination cracks in partially stitched structures. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerospace Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAMINATED materials KW - COMPOSITE materials -- Delamination KW - STRENGTH of materials KW - STRAINS & stresses (Mechanics) KW - STRUCTURAL engineering N1 - Accession Number: 22389287; Source Information: Oct2006, Vol. 19 Issue 4, p217; Subject Term: LAMINATED materials; Subject Term: COMPOSITE materials -- Delamination; Subject Term: STRENGTH of materials; Subject Term: STRAINS & stresses (Mechanics); Subject Term: STRUCTURAL engineering; Subject Term: ; Number of Pages: 10p; ; Illustrations: 2 Diagrams, 13 Graphs; ; Document Type: Article; L3 - 10.1061/(ASCE)0893-1321(2006)19:4(217) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=22389287&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - NEWS AU - Hill, Alexander AU - Westermann, Edward B. T1 - Notes & Comments. JO - Journal of Military History JF - Journal of Military History J1 - Journal of Military History PY - 2006/10// Y1 - 2006/10// VL - 70 IS - 4 M3 - Editorial SP - 1099 EP - 1103 SN - 08993718 AB - This article presents a discussion on Edward Westermann's review of Alexander Hill's book "The War Behind the Eastern Front: The Soviet Partisan Movement in North-West Russia, 1941-1944." An overview of the arguments raised in the book is presented. Response of Westermann to a commentary on his review is detailed. KW - WAR Behind the Eastern Front: The Soviet Partisan Movement in North-West Russia 1941-1944, The (Book) KW - BOOKS -- Reviews KW - HILL, Alexander KW - WESTERMANN, Edward KW - WAR N1 - Accession Number: 22731603; Source Information: Oct2006, Vol. 70 Issue 4, p1099; Subject Term: WAR Behind the Eastern Front: The Soviet Partisan Movement in North-West Russia 1941-1944, The (Book); Subject Term: BOOKS -- Reviews; Subject Term: HILL, Alexander; Subject Term: WESTERMANN, Edward; Subject Term: WAR; Subject Term: ; Number of Pages: 5p; ; Document Type: Editorial; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=22731603&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2006-12438-014 AN - 2006-12438-014 AU - Chappelle, Wayne AU - Lumley, Vicki T1 - Outpatient mental health care at a remote U.S. air base in Southern Iraq. JF - Professional Psychology: Research and Practice JO - Professional Psychology: Research and Practice JA - Prof Psychol Res Pr Y1 - 2006/10// VL - 37 IS - 5 SP - 523 EP - 530 CY - US PB - American Psychological Association SN - 0735-7028 SN - 1939-1323 AD - Chappelle, Wayne, United States Air Force School of Aerospace Medicine, Clinical Sciences Division, San Antonio, TX, US N1 - Accession Number: 2006-12438-014. Other Journal Title: Professional Psychology. Partial author list: First Author & Affiliation: Chappelle, Wayne; United States Air Force School of Aerospace Medicine, Clinical Sciences Division, San Antonio, TX, US. Release Date: 20060925. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Mental Health Services; Military Psychology; Outpatient Treatment. Classification: Health & Mental Health Services (3370); Military Psychology (3800). Population: Human (10); Male (30); Female (40); Outpatient (60). Location: Iraq. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 8. Issue Publication Date: Oct, 2006. Publication History: Accepted Date: Mar 8, 2006; Revised Date: Jan 13, 2006; First Submitted Date: Jun 9, 2005. Copyright Statement: Public Domain AB - The following article is a comprehensive description and utilization study of a United States Air Force outpatient mental heath clinic at a remote air base in southern Iraq over a 10-month period (November 2003-August 2004). The purpose of the article is to address several salient issues that include a description of the clinic and psychological services (i.e., intake and triage, hospitalization, aeromedical evacuations, and follow-up care), utilization data from the clinic regarding military personnel (soldiers and airmen) seeking mental health care, as well as implications and recommendations to military mental health providers who are serving or preparing for deployment on the front line. The results of the study aim to inform mental health providers of prominent mental health issues on the battlefield rather than rely on assumptions or historical data that may not generalize to more recent events. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - U.S. air base KW - Iraq KW - outpatient mental health care KW - 2006 KW - Air Force Personnel KW - Mental Health Services KW - Military Psychology KW - Outpatient Treatment KW - 2006 DO - 10.1037/0735-7028.37.5.523 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-12438-014&site=ehost-live&scope=site UR - wayne.chappelle@brooks.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-13445-001 AN - 2006-13445-001 AU - Doan, Brandon K. AU - Hickey, Patrick A. AU - Lieberman, Harris R. AU - Fischer, Joseph R. T1 - Caffeinated tube food effect on pilot performance during a 9-hour, simulated nighttime U-2 mission. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2006/10// VL - 77 IS - 10 SP - 1034 EP - 1040 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Doan, Brandon K., USAFA, 2169 Fieldhouse Dr., CO, US, 80840 N1 - Accession Number: 2006-13445-001. PMID: 17042248 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Doan, Brandon K.; United States Air Force Academy, CO, US. Release Date: 20070402. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Caffeine; Cognitive Ability; Food Intake; Simulation. Minor Descriptor: Food; Placebo. Classification: Personality Psychology (3100); Military Psychology (3800). Population: Human (10); Male (30). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Cognitive Test Battery; Adaptive Tracking Task; Code Substitution Task; Match-to-Sample Task; Scanning Visual Vigilance Test; Nova Scan Test; Profile of Mood States Questionnaire. Methodology: Clinical Trial; Empirical Study; Quantitative Study. References Available: Y. Page Count: 7. Issue Publication Date: Oct, 2006. AB - Introduction: Interventions to maintain performance are necessary to meet demanding mission requirements during sustained and surge aviation operations. Tube foods are the only foods that can be consumed during a U-2 mission due to the confining and encapsulating nature of required support equipment. Caffeine is a safe and effective strategy to enhance cognitive performance and is an ingredient in some tube foods. The objective of this study was to determine whether moderate doses of caffeinated tube foods would enhance performance in a simulated U-2 mission. Methods: Volunteers were 12 healthy USAF male pilots. The study used a double blind, placebo-controlled, two-factor, repeated-measures (five iterations per night) design. Caffeinated (200 mg each) or placebo tube food was consumed at 00:00 and 04:00. Dependent measures assessed included standardized tests of cognitive performance, vigilance, and mood designed to simulate the demands of a nighttime U-2 mission. Results: Statistically significant (p < 0.05) improvements in performance due to caffeine administration compared with placebo were present in all five cognitive tasks either as main effects, interactions, or absence of significant degradation in the caffeine treatment condition compared with the placebo condition. A majority of sleep deprivation-induced performance decrements were attenuated by 200 mg of caffeine in tube food consumed every 4 h, and in some cases, performance was improved beyond baseline levels. Conclusions: Caffeinated tube food maintained cognitive performance representative of U-2 long-duration mission tasks at or near baseline levels for a 9-h overnight period in qualified USAF pilots. Side effects were minor and did not differ between placebo and caffeine conditions. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - caffeinated tube food effect KW - pilot performance KW - simulated night time mission KW - cognitive performance KW - 2006 KW - Aircraft Pilots KW - Caffeine KW - Cognitive Ability KW - Food Intake KW - Simulation KW - Food KW - Placebo KW - 2006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-13445-001&site=ehost-live&scope=site UR - Brandon.Doan@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - AU - Cain, A. C.1 T1 - Pyrrhic victory: French strategy and operations in the Great War. JO - Choice: Current Reviews for Academic Libraries JF - Choice: Current Reviews for Academic Libraries J1 - Choice: Current Reviews for Academic Libraries PY - 2006/09// Y1 - 2006/09// VL - 44 IS - 1 CP - 1 M3 - Book Review SP - 187 EP - 187 SN - 00094978 AB - The article reviews the book "Pyrrhic victory: French Strategy and Operations in the Great War," by Robert A. Doughty. KW - Nonfiction KW - Military strategy KW - Doughty, Robert A. KW - Pyrrhic Victory: French Strategy & Operations in the Great War (Book) N1 - Accession Number: 22340781; Authors: Cain, A. C. 1; Affiliations: 1: United States Air Force, Air University; Subject: Pyrrhic Victory: French Strategy & Operations in the Great War (Book); Subject: Doughty, Robert A.; Subject: Military strategy; Subject: Nonfiction; Number of Pages: 1/6p; Record Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=22340781&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - Herzinger, Kurt AU - Wilson, Stephen AU - Sieben, Nándor AU - Rushall, Jeff T1 - Perfect Pairs of Ideals and Duals in Numerical Semigroups. JO - Communications in Algebra JF - Communications in Algebra J1 - Communications in Algebra PY - 2006/09// Y1 - 2006/09// VL - 34 IS - 9 M3 - Article SP - 3475 EP - 3486 PB - Taylor & Francis Ltd SN - 00927872 AB - This article considers numerical semigroups S that have a nonprincipal relative ideal I such that μ S ( I )μ S ( S - I ) = μ S ( I + ( S - I )). We show the existence of an infinite family of such pairs ( S , I ) in which I + ( S - I ) = S \{0}. We also show examples of such pairs that are not members of this family. We discuss the computational process used to find these examples and present some open questions pertaining to them. [ABSTRACT FROM AUTHOR] AB - Copyright of Communications in Algebra is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADDITIVE functions KW - IDEALS (Algebra) KW - DUALITY theory (Mathematics) KW - GENERATING functions KW - FROBENIUS algebras N1 - Accession Number: 22306879; Source Information: Sep2006, Vol. 34 Issue 9, p3475; Subject Term: ADDITIVE functions; Subject Term: IDEALS (Algebra); Subject Term: DUALITY theory (Mathematics); Subject Term: GENERATING functions; Subject Term: FROBENIUS algebras; Subject Term: ; Number of Pages: 12p; ; Document Type: Article; L3 - 10.1080/00927870600794206 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=22306879&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Gans, Michael J. T1 - Channel Capacity Between Antenna Arrays Part I: Sky Noise Dominates. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2006/09// VL - 54 IS - 9 M3 - Article SP - 1586 EP - 1592 SN - 00906778 AB - Space-time coding techniques can be used to achieve very high spectral efficiencies in highly scattering environments using multiple transmit and receive antennas. At the remote station, there is usually a more limited space allotted to the antenna array than at the base station. Since the spectral efficiency improves with the number of antennas, one is interested in how many antennas can be crammed into the limited space on the remote station. This paper (Part I of II) addresses some of the issues which affect the allowable density of antennas in the remote station. In particular, the mutual impedance between antenna elements in the remote array and the correlation between the signal and noise fields received by these elements are analyzed for their impact on the channel capacity achievable by such arrays. In particular, we assume the transmitter is radiating from nT elements of uncoupled half-wave dipoles and knows nothing of the channel. A formula is given for the maximum channel capacity to a receiving array of nR elements, coupled to each other in the presence of ambient noise or interference with a uniform angle of arrival distribution. This formula neglects amplifier noise in the receivers. It is shown that the channel capacity is already determined at the terminals of the receiving array, and can not be improved by internal coupling networks following the receiving array. When the propagation is by means of full three-dimensional scattering, the channel capacity is unaffected by mutual coupling in the receiving array. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Radio transmitter-receivers KW - Antenna arrays KW - Coding theory KW - Transmitting antennas KW - Line receivers (Integrated circuits) KW - Channels (Structural members) KW - Spectrum analysis KW - Correlation (Statistics) KW - Flexible couplings KW - channel capacity KW - multiple-input multiple-output (MIMO) KW - mutual coupling KW - noise correlation N1 - Accession Number: 22487151; Gans, Michael J. 1; Email Address: gansm@rl.af.mil; Affiliations: 1: Air Force Research Laboratory, Information Directorate, Rome, NY 13441 USA; Issue Info: Sep2006, Vol. 54 Issue 9, p1586; Thesaurus Term: Radio transmitter-receivers; Subject Term: Antenna arrays; Subject Term: Coding theory; Subject Term: Transmitting antennas; Subject Term: Line receivers (Integrated circuits); Subject Term: Channels (Structural members); Subject Term: Spectrum analysis; Subject Term: Correlation (Statistics); Subject Term: Flexible couplings; Author-Supplied Keyword: channel capacity; Author-Supplied Keyword: multiple-input multiple-output (MIMO); Author-Supplied Keyword: mutual coupling; Author-Supplied Keyword: noise correlation; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; Number of Pages: 7p; Illustrations: 1 Black and White Photograph, 2 Graphs; Document Type: Article L3 - 10.1109/TCOMM.2006.881238 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=22487151&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Rasmussen, Cody C. AU - Canfield, Robert A. AU - Blair, Maxwell T1 - Joined-Wing Sensor-Craft Configuration Design. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2006/09//Sep/Oct2006 Y1 - 2006/09//Sep/Oct2006 VL - 43 IS - 5 M3 - Article SP - 1470 EP - 1478 SN - 00218669 AB - An optimized configuration design using both structural and aerodynamic analyses of a joined-wing configuration is presented here. The joined-wing aircraft concept fulfills a proposed long-endurance surveillance mission and incorporates a load-bearing antenna structure embedded in the wing skin. A range of joined-wing configurations were trimmed for critical flight conditions and then structurally optimized for trimmed flight and gust loads to achieve a minimum weight for each single configuration. A response surface statistical analysis was then applied to determine optimized joined-wing aircraft configurations. The optimal configurations were then reanalyzed and verified by examining nonlinear structural deflection characteristics and analyzing material and aerodynamic distributions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - ANTENNAS (Electronics) KW - ATMOSPHERIC turbulence KW - LOADS (Mechanics) KW - EXPERIMENTAL design N1 - Accession Number: 23142564; Source Information: Sep/Oct2006, Vol. 43 Issue 5, p1470; Subject Term: AIRPLANE wings; Subject Term: ANTENNAS (Electronics); Subject Term: ATMOSPHERIC turbulence; Subject Term: LOADS (Mechanics); Subject Term: EXPERIMENTAL design; Subject Term: ; Number of Pages: 9p; ; Illustrations: 8 Diagrams, 6 Charts, 4 Graphs; ; Document Type: Article; L3 - 10.2514/1.21951 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=23142564&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kundu, Tribikram AU - Banerjee, Sourav AU - Jata, Kumar V. T1 - An experimental investigation of guided wave propagation in corrugated plates showing stop bands and pass bands. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2006/09// VL - 120 IS - 3 M3 - Article SP - 1217 EP - 1226 SN - 00014966 AB - Nonplanar surfaces are often encountered in engineering structures. In aerospace structures, periodically corrugated boundaries are formed by friction-stir-welding. In civil engineering structures, rebars used in reinforced concrete beams and slabs have periodic surface. Periodic structures are also being used to create desired acoustic band gaps. For health monitoring of these structures, a good understanding of the elastic wave propagation through such periodic structures is necessary. Although a number of research papers on the wave propagation in periodic structures are available in the literature, no one experimentally investigated the guided wave propagation through plates with periodic boundaries and compared the experimental results with theoretical predictions as done in this paper. The experimental results clearly show that elastic waves can propagate through the corrugated plate (waveguide) for certain frequencies called “pass bands,” and find it difficult to propagate for some other frequencies called “stop bands.” Stop bands are found to increase with the degree of corrugation. Experimental results are compared with the theoretical predictions, and good matching is observed for plates with small degree of corrugation. Only two parameters—the depth of corrugation and the wavelength of the periodicity—are sufficient for modeling the elastic wave propagation in slightly corrugated plates. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONCRETE beams -- Fatigue KW - ELASTIC waves -- Diffraction KW - ELASTIC waves -- Scattering KW - ELASTIC plates & shells KW - ACOUSTIC surface waves KW - WAVEGUIDES N1 - Accession Number: 22257470; Kundu, Tribikram 1; Email Address: tkundu@email.arizona.edu; Banerjee, Sourav 1; Email Address: sourav@email.arizona.edu; Jata, Kumar V. 2; Email Address: kumar.jata@wpafb.af.mil; Affiliations: 1 : Department of Civil Engineering and Engineering Mechanics, University of Arizona, Tucson, Arizona 85721; 2 : Air Force Research Laboratory, AFRL/MLL, Wright Patterson Air Force Base, Ohio 45433; Source Info: Sep2006, Vol. 120 Issue 3, p1217; Subject Term: CONCRETE beams -- Fatigue; Subject Term: ELASTIC waves -- Diffraction; Subject Term: ELASTIC waves -- Scattering; Subject Term: ELASTIC plates & shells; Subject Term: ACOUSTIC surface waves; Subject Term: WAVEGUIDES; Number of Pages: 10p; Illustrations: 1 Black and White Photograph, 1 Diagram, 3 Charts, 8 Graphs; Document Type: Article L3 - 10.1121/1.2221534 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=22257470&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR ID - 2006-20242-002 AN - 2006-20242-002 AU - Chappelle, Wayne T1 - An Air Force Psychologist's Collaboration with Clergy: Lessons Learned on the Battlefield of Iraq. JF - Journal of Psychology and Christianity JO - Journal of Psychology and Christianity Y1 - 2006///Fal 2006 VL - 25 IS - 3 SP - 205 EP - 215 CY - US PB - Christian Assn for Psychological Studies SN - 0733-4273 AD - Chappelle, Wayne, Soldier Readiness Service, Dept. of Psychology, Madigan Army Medical Center, Ft. Lewis, WA, US, 98431 N1 - Accession Number: 2006-20242-002. Partial author list: First Author & Affiliation: Chappelle, Wayne; United States Air Force, US. Release Date: 20061106. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Clergy; Cooperation; Mental Health Services; Psychologists; War. Minor Descriptor: Collaboration. Classification: Health & Mental Health Treatment & Prevention (3300); Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 11. Issue Publication Date: Fal 2006. AB - The following article augments the research on psychology-clergy collaboration by discussing my observations and experiences as an Air Force clinical psychologist while serving as the primary mental health provider for two expeditionary medical groups in Southwest Asia providing care to military personnel who have deployed in support of OPERATION IRAQI FREEDOM. The article is a reflection of my collaborative experiences with members of the clergy (8 Army and 4 Air Force chaplains representing Protestant and Catholic dominations) over a total of 8-months serving an estimated population of 14,000 military personnel. The article is a retrospective analysis of: (a) my reasons and efforts to establish collaboration, and (b) how collaboration positively affected the provision of mental health care on the battlefield (i.e., outreach and prevention, management of personnel at risk for suicide, and group interventions for managing traumatic experiences related to combat). Lessons learned from my experience are discussed and relevant to a wide range of military and civilian settings. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Air Force psychologists KW - psychologist-clergy collaboration KW - Iraq battlefield KW - mental health care KW - 2006 KW - Clergy KW - Cooperation KW - Mental Health Services KW - Psychologists KW - War KW - Collaboration KW - 2006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-20242-002&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-10691-008 AN - 2006-10691-008 AU - Foster, Craig A. AU - Law, Melanie R. F. T1 - How Many Perspectives Provide a Compass? Differentiating 360-Degree and Multi-Source Feedback. JF - International Journal of Selection and Assessment JO - International Journal of Selection and Assessment Y1 - 2006/09// VL - 14 IS - 3 SP - 288 EP - 291 CY - United Kingdom PB - Blackwell Publishing SN - 0965-075X SN - 1468-2389 AD - Foster, Craig A., HQ USAFA/DFBL, U.S. Air Force Academy, 2354 Fairchild Drive, U.S. Air Force Academy, CO, US, 80840-6228 N1 - Accession Number: 2006-10691-008. Partial author list: First Author & Affiliation: Foster, Craig A.; United States Air Force Academy, Colorado Springs, CO, US. Other Publishers: Wiley-Blackwell Publishing Ltd. Release Date: 20060821. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Feedback; Peer Evaluation; Personnel Evaluation. Minor Descriptor: Interpersonal Communication. Classification: Personnel Evaluation & Job Performance (3630). Population: Human (10). References Available: Y. Page Count: 4. Issue Publication Date: Sep, 2006. AB - Researchers have been inconsistent regarding (a) the relationship between 360° feedback and multi-source feedback and (b) the definition of 360° feedback. In the present paper, we review these topics and offer two solutions that could facilitate effective communication about these terms. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - multi-source feedback KW - 360 degree feedback KW - effective communication KW - 2006 KW - Feedback KW - Peer Evaluation KW - Personnel Evaluation KW - Interpersonal Communication KW - 2006 DO - 10.1111/j.1468-2389.2006.00347.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-10691-008&site=ehost-live&scope=site UR - craig.foster@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-13340-002 AN - 2006-13340-002 AU - Parco, James E. T1 - Price-Setting Power and Information Asymmetry in Sealed Bidding. T3 - Experimental Economics JF - Managerial & Decision Economics JO - Managerial & Decision Economics JA - MDE Manage Decis Econ Y1 - 2006/09// VL - 27 IS - 6 SP - 413 EP - 434 CY - US PB - John Wiley & Sons SN - 0143-6570 SN - 1099-1468 AD - Parco, James E., HQ USAFA/DFM, USAF Academy, 2354 Fairchild Drive, Ste 6H-130, Broomfield, CO, US, 80840-5099 N1 - Accession Number: 2006-13340-002. Partial author list: First Author & Affiliation: Parco, James E.; United States Air Force Academy, Department of Management, Broomfield, CO, US. Release Date: 20070430. Correction Date: 20130128. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Bargaining; Costs and Cost Analysis; Expectations; Information; Interpersonal Control. Minor Descriptor: Money. Classification: Group & Interpersonal Processes (3020). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 22. Issue Publication Date: Sep, 2006. AB - Diverging from the historical precedent of using a midpoint rule (k = 1₂) to experimentally structure two-person bargaining under incomplete information, extreme values of k (k = {0,1}) are invoked in an asymmetric information environment endowing one player with exclusive price-setting power and the other player with veto-only power. Theoretical analysis suggests that regardless of who possesses an information advantage, expected profits for a seller (buyer) decrease (increase) in k. Yet, experimental results show that under conditions of dramatic information asymmetry, not only is the observed share of the surplus is much smaller than predicted for the player with price-setting power, but also the player with the information advantage is unable to garner a greater share of the surplus as has been consistently demonstrated in previous studies providing a boundary test of Daniel et al.'s Information Disparity Hypothesis (1998). (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - price setting power KW - veto-only power KW - information asymmetry KW - sealed bidding KW - two-person bargaining KW - incomplete information KW - information advantage KW - surplus share KW - expected profits KW - 2006 KW - Bargaining KW - Costs and Cost Analysis KW - Expectations KW - Information KW - Interpersonal Control KW - Money KW - 2006 U1 - Sponsor: Hong Kong Grants Committee, Hong Kong. Grant: HKUST6225/99H. Other Details: Amnon Rapoport, Rami Zwick and Darryl Seale. Recipients: No recipient indicated DO - 10.1002/mde.1279 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-13340-002&site=ehost-live&scope=site UR - james.parco@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-20045-012 AN - 2006-20045-012 AU - Patterson, Robert AU - Winterbottom, Marc D. AU - Pierce, Byron J. T1 - Perceptual Issues in the Use of Head-Mounted Visual Displays. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2006///Fal 2006 VL - 48 IS - 3 SP - 555 EP - 573 CY - US PB - Human Factors & Ergonomics Society SN - 0018-7208 SN - 1547-8181 AD - Patterson, Robert, Department of Psychology, Washington State University, Pullman, WA, US, 99164-4820 N1 - Accession Number: 2006-20045-012. PMID: 17063969 Partial author list: First Author & Affiliation: Patterson, Robert; Washington State University, Pullman, WA, US. Other Publishers: Sage Publications. Release Date: 20061120. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Visual Displays; Visual Perception. Classification: Visual Perception (2323). Population: Human (10). Methodology: Literature Review. References Available: Y. Page Count: 19. Issue Publication Date: Fal 2006. AB - Objective: We provide a review and analysis of much of the published literature on visual perception issues that impact the design and use of head-mounted displays (HMDs). Background: Unlike the previous literature on HMDs, this review draws heavily from the basic vision literature in order to help provide insight for future design solutions for HMDs. Method: Included in this review are articles and books found cited in other works as well as articles and books obtained from an Internet search. Results: Issues discussed include the effect of brightness and contrast on depth of field, dark focus, dark vergence, and perceptual constancy; the effect of accommodation-vergence synergy on perceptual constancy, eyestrain, and discomfort; the relationship of field of view to the functioning of different visual pathways and the types of visual-motor tasks mediated by them; the relationship of binocular input to visual suppression; and the importance of head movements, head tracking, and display update lag. Conclusion: This paper offers a set of recommendations for the design and use of HMDs. Application: Consideration of the basic vision literature will provide insight for future design solutions for HMDs. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - visual perception KW - head-mounted displays KW - visual displays KW - 2006 KW - Visual Displays KW - Visual Perception KW - 2006 U1 - Sponsor: USAF. Grant: F41624-97-D-5000. Recipients: No recipient indicated U1 - Sponsor: National Research Council, Summer Faculty Fellowship Program. Recipients: No recipient indicated DO - 10.1518/001872006778606877 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-20045-012&site=ehost-live&scope=site UR - rpatter@mail.wsu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Mailloux, R. J. AU - Santarelli, S. G. AU - Roberts, T. M. T1 - Wideband arrays using irregular (polyomino) shaped subarrays. JO - Electronics Letters JF - Electronics Letters Y1 - 2006/08/31/ VL - 42 IS - 18 M3 - Article SP - 1019 EP - 1020 SN - 00135194 AB - Irregular polyomino-shaped subarrays are shown to provide a practical and effective means for introducing time delay into an array with phase steering. The elimination of quantisation lobes, with resulting peak sidelobes suppressed more than 14 dB below the quantisation lobes of an array of rectangular subarrays, is demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BROADBAND communication systems KW - ANTENNA arrays KW - TIME delay systems KW - POLYOMINOES KW - ANTENNA radiation patterns KW - COMBINATORIAL designs & configurations N1 - Accession Number: 22205420; Mailloux, R. J. 1; Santarelli, S. G. 2; Email Address: scott.santorelli@hanscom.af.mil; Roberts, T. M. 2; Affiliations: 1: Department of Electrical and Computer Engineering, University of Massachusetts, Amherst, MA, USA; 2: Air Force Research Laboratory, Sensors Directorate, USA; Issue Info: 8/31/2006, Vol. 42 Issue 18, p1019; Thesaurus Term: BROADBAND communication systems; Subject Term: ANTENNA arrays; Subject Term: TIME delay systems; Subject Term: POLYOMINOES; Subject Term: ANTENNA radiation patterns; Subject Term: COMBINATORIAL designs & configurations; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; Number of Pages: 2p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1049/el:20062252 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=22205420&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - McAdams, Ryan M. AU - Mustafa, Shamimunisa B. AU - Shenberger, Jeffrey S. AU - Dixon, Patricia S. AU - Henson, Barbara M. AU - DiGeronimo, Robert J. T1 - Cyclic stretch attenuates effects of hyperoxia on cell proliferation and viability in human alveolar epithelial cells. JO - American Journal of Physiology: Lung Cellular & Molecular Physiology JF - American Journal of Physiology: Lung Cellular & Molecular Physiology Y1 - 2006/08// VL - 35 IS - 2 M3 - Article SP - L166 EP - L174 SN - 10400605 AB - The treatment of severe lung disease often requires the use of high concentrations of oxygen coupled with the need for assisted ventilation, potentially exposing the pulmonary epithelium to both reactive oxygen species and nonphysiological cyclic stretch. Whereas prolonged hyperoxia is known to cause increased cell injury, cyclic stretch may result in either cell proliferation or injury depending on the pattern and degree of exposure to mechanical deformation. How hyperoxia and cyclic stretch interact to affect the pulmonary epithelium in vitro has not been previously investigated. This study was performed using human alveolar epithelial A549 cells to explore the combined effects of cyclic stretch and hyperoxia on cell proliferation and viability. Under room air conditions, cyclic stretch did not alter cell viability at any time point and increased cell number after 48 h compared with unstretched controls. After exposure to prolonged hyperoxia, cell number and [³H]thymidine incorporation markedly decreased, whereas evidence of oxidative stress and nonapoptotic cell death increased. The combination of cyclic stretch with hyperoxia significantly mitigated the negative effects of prolonged hyperoxia alone on measures of cell proliferation and viability. In addition, cyclic stretch resulted in decreased levels of oxidative stress over time in hyperoxia-exposed cells. Our results suggest that cyclic stretch, as applied in this study, can minimize the detrimental effects of hyperoxia on alveolar epithelial A549 cells. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Physiology: Lung Cellular & Molecular Physiology is the property of American Physiological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LUNG diseases KW - ACTIVE oxygen KW - CELL proliferation KW - CELL death KW - EPITHELIUM KW - THYMIDINE KW - cell death KW - pulmonary epithelial cells N1 - Accession Number: 21787616; McAdams, Ryan M. 1; Mustafa, Shamimunisa B. 2; Shenberger, Jeffrey S. 3; Dixon, Patricia S. 1; Henson, Barbara M. 2; DiGeronimo, Robert J. 1; Email Address: Robert.DiGeronimo@lackland.af.mil; Source Information: Aug2006, Vol. 35 Issue 2, pL166; Subject: LUNG diseases; Subject: ACTIVE oxygen; Subject: CELL proliferation; Subject: CELL death; Subject: EPITHELIUM; Subject: THYMIDINE; Author-Supplied Keyword: cell death; Author-Supplied Keyword: pulmonary epithelial cells; Number of Pages: 9p; Illustrations: 1 Color Photograph, 7 Graphs; Document Type: Article L3 - 10.1152/ajplung.00160.2005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=21787616&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Maturo, Stephen C. AU - Mair, Eric A. T1 - Submucosal Minimally Invasive Lingual Excision: An Effective, Novel Surgery for Pediatric Tongue Base Reduction. JO - Annals of Otology, Rhinology & Laryngology JF - Annals of Otology, Rhinology & Laryngology Y1 - 2006/08// VL - 115 IS - 8 M3 - Article SP - 624 EP - 630 SN - 00034894 AB - Objectives: The aim of this study was to develop an effective single intraoral, minimally invasive technique to reduce the enlarged tongue base in children with obstructive macroglossia. Methods: We present the anatomic dissection of fresh cadavers and a representative case series of children who underwent submucosal minimally invasive lingual excision (SMILE) with a plasma-mediated radiofrequency device (coblation) under intraoral ultrasonic and endoscopic guidance. Multiple anatomic dissections determined the relative location of the hypoglossal nerve and lingual neurovascular bundle in relation to removable tongue base musculature. A pediatric case series demonstrates the straightforward SMILE technique. Results: Laboratory anatomic dissection and clinical lingual ultrasonography revealed the surgical safety borders for SMILE. The surgical safety and efficacy of SMILE is demonstrated by preoperative and postoperative clinical examinations and polysomnograms in children with obstructive macroglossia (such as Beckwith-Wiedemann and Down syndromes and tongue vascular malformation). Coblation submucosally removes excessive tongue base tissue through a small anterior tongue incision. SMILE was performed without excessive pain, bleeding, edema, infection, or tongue dysfunction. Conclusions: SMILE is an effective novel operation that incorporates coblation with ultrasonography and endoscopic guidance for children who need tongue base reduction. Anatomic dissection and clinical cases demonstrate the potential for aggressive yet relatively safe tissue removal by this minimally invasive technique. SMILE also has significant potential for adults with obstructive sleep apnea due to a large tongue base. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of Otology, Rhinology & Laryngology is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXCISION (Surgery) KW - OPERATIVE surgery KW - SURGERY KW - TONGUE -- Surgery KW - ORAL surgery KW - macroglossia KW - submucosal minimally invasive lingual excision KW - tongue base reduction N1 - Accession Number: 22005714; Maturo, Stephen C. 1; Mair, Eric A. 1; Email Address: emair@ceenta.com; Source Information: Aug2006, Vol. 115 Issue 8, p624; Subject: EXCISION (Surgery); Subject: OPERATIVE surgery; Subject: SURGERY; Subject: TONGUE -- Surgery; Subject: ORAL surgery; Author-Supplied Keyword: macroglossia; Author-Supplied Keyword: submucosal minimally invasive lingual excision; Author-Supplied Keyword: tongue base reduction; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=22005714&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 106280974 T1 - Submucosal minimally invasive lingual excision: an effective, novel surgery for pediatric tongue base reduction. AU - Maturo SC AU - Mair EA Y1 - 2006/08// N1 - Accession Number: 106280974. Language: English. Entry Date: 20070511. Revision Date: 20150711. Publication Type: Journal Article; pictorial; research; tables/charts. Journal Subset: Biomedical; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 0407300. KW - Glossectomy -- Methods KW - Macroglossia -- Surgery KW - Tongue -- Surgery KW - Adolescence KW - Adult KW - Airway Obstruction -- Etiology KW - Airway Obstruction -- Surgery KW - Cadaver KW - Case Studies KW - Child KW - Evaluation Research KW - Female KW - Infant KW - Lingual Nerve KW - Macroglossia -- Complications KW - Minimally Invasive Procedures -- Methods KW - Outcomes Research KW - Sleep Apnea, Obstructive -- Etiology KW - Sleep Apnea, Obstructive -- Surgery KW - Treatment Outcomes KW - Ultrasonography, Doppler, Color KW - Human SP - 624 EP - 630 JO - Annals of Otology, Rhinology & Laryngology JF - Annals of Otology, Rhinology & Laryngology JA - ANN OTOL RHINOL LARYNGOL VL - 115 IS - 8 CY - Thousand Oaks, California PB - Sage Publications Inc. AB - OBJECTIVES: The aim of this study was to develop an effective single intraoral, minimally invasive technique to reduce the enlarged tongue base in children with obstructive macroglossia. METHODS: We present the anatomic dissection of fresh cadavers and a representative case series of children who underwent submucosal minimally invasive lingual excision (SMILE) with a plasma-mediated radiofrequency device (coblation) under intraoral ultrasonic and endoscopic guidance. Multiple anatomic dissections determined the relative location of the hypoglossal nerve and lingual neurovascular bundle in relation to removable tongue base musculature. A pediatric case series demonstrates the straightforward SMILE technique. RESULTS: Laboratory anatomic dissection and clinical lingual ultrasonography revealed the surgical safety borders for SMILE. The surgical safety and efficacy of SMILE is demonstrated by preoperative and postoperative clinical examinations and polysomnograms in children with obstructive macroglossia (such as Beckwith-Wiedemann and Down syndromes and tongue vascular malformation). Coblation submucosally removes excessive tongue base tissue through a small anterior tongue incision. SMILE was performed without excessive pain, bleeding, edema, infection, or tongue dysfunction. CONCLUSIONS: SMILE is an effective novel operation that incorporates coblation with ultrasonography and endoscopic guidance for children who need tongue base reduction. Anatomic dissection and clinical cases demonstrate the potential for aggressive yet relatively safe tissue removal by this minimally invasive technique. SMILE also has significant potential for adults with obstructive sleep apnea due to a large tongue base. SN - 0003-4894 AD - Pediatric Otolaryngology Service, Department of Otolaryngology, Wilford Hall United States Air Force Medical Center, San Antonio, Texas U2 - PMID: 16944662. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106280974&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Reid, J. Robert AU - Marsh, Eric D. AU - Webster, Richard T. T1 - Micromachined Rectangular-Coaxial Transmission Lines. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques J1 - IEEE Transactions on Microwave Theory & Techniques PY - 2006/08// Y1 - 2006/08// VL - 54 IS - 8 M3 - Article SP - 3433 EP - 3442 SN - 00189480 AB - Rectangular-coaxial (recta-coax) transmission lines fabricated through a three-dimensional micromachining process are presented. These lines are shown to have significant advantages over competing integrated transmission lines such as microstrip and coplanar waveguides. Design equations are presented for impedance, loss, and frequency range. The equations are confirmed with simulations and measurements. The quality factor of shorted λ/4 resonators is measured to be 156 at 60 GHz. This corresponds to a line loss of 0.353 dB/cm. Advantages of these lines for passive millimeter-wave circuits including ease of signal routing, high isolation, and signal crossovers are demonstrated with realized lines and couplers. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVE transmission lines KW - STRIP transmission lines KW - MICROSTRIP antennas KW - WAVE-guide filters KW - WAVE-guide circulators KW - DIELECTRIC resonators KW - DIRECTIONAL couplers KW - MICROWAVE devices N1 - Accession Number: 22706021; Source Information: Aug2006, Vol. 54 Issue 8, p3433; Subject Term: MICROWAVE transmission lines; Subject Term: STRIP transmission lines; Subject Term: MICROSTRIP antennas; Subject Term: WAVE-guide filters; Subject Term: WAVE-guide circulators; Subject Term: DIELECTRIC resonators; Subject Term: DIRECTIONAL couplers; Subject Term: MICROWAVE devices; Subject Term: ; Number of Pages: 10p; ; Illustrations: 3 Black and White Photographs, 8 Diagrams, 3 Charts, 7 Graphs; ; Document Type: Article; L3 - 10.1109/TMTT.2006.879133 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=22706021&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Jin, Zhipu AU - Shima, Tal AU - Schumacher, Corey J. T1 - Optimal Scheduling for Refueling Multiple Autonomous Aerial Vehicles. JO - IEEE Transactions on Robotics JF - IEEE Transactions on Robotics J1 - IEEE Transactions on Robotics PY - 2006/08// Y1 - 2006/08// VL - 22 IS - 4 M3 - Article SP - 682 EP - 693 SN - 15523098 AB - The scheduling, for autonomous refueling, of multiple unmanned aerial vehicles (UAVs) is posed as a combinatorial optimization problem. An efficient dynamic programming (DP) algorithm is introduced for finding the optimal initial refueling sequence. The optimal sequence needs to be recalculated when conditions change, such as when UAVs join or leave the queue unexpectedly. We develop a systematic shuffle scheme to reconfigure the UAV sequence using the least amount of shuffle steps. A similarity metric over UAV sequences is introduced to quantify the reconfiguration effort which is treated as an additional cost and is integrated into the DP algorithm. Feasibility and limitations of this novel approach are also discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Robotics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REMOTELY piloted vehicles KW - DYNAMIC programming KW - SYSTEMS engineering KW - KINEMATICS of machinery KW - MATHEMATICAL optimization KW - ALGORITHMS N1 - Accession Number: 21927158; Source Information: Aug2006, Vol. 22 Issue 4, p682; Subject Term: REMOTELY piloted vehicles; Subject Term: DYNAMIC programming; Subject Term: SYSTEMS engineering; Subject Term: KINEMATICS of machinery; Subject Term: MATHEMATICAL optimization; Subject Term: ALGORITHMS; Subject Term: ; Number of Pages: 12p; ; Document Type: Article; L3 - 10.1109/TRO.2006.878793 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=21927158&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Saber M. Hussain AU - Amanda K. Javorina AU - Amanda M. Schrand AU - Helen M. Duhart AU - Syed F. Ali AU - John J. Schlager T1 - The Interaction of Manganese Nanoparticles with PC-12 Cells Induces Dopamine Depletion. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 2006/08// VL - 92 IS - 2 M3 - Article SP - 456 EP - 463 PB - Oxford University Press / USA SN - 10966080 AB - This investigation was designed to determine whether nano-sized manganese oxide (Mn-40nm) particles would induce dopamine (DA) depletion in a cultured neuronal phenotype, PC-12 cells, similar to free ionic manganese (Mn2+). Cells were exposed to Mn-40nm, Mn2+ (acetate), or known cytotoxic silver nanoparticles (Ag-15nm) for 24 h. Phase-contrast microscopy studies show that Mn-40nm or Mn2+ exposure did not greatly change morphology of PC-12 cells. However, Ag-15nm and AgNO3 produce cell shrinkage and irregular membrane borders compared to control cells. Further microscopic studies at higher resolution demonstrated that Mn-40nm nanoparticles and agglomerates were effectively internalized by PC-12 cells. Mitochondrial reduction activity, a sensitive measure of particle and metal cytotoxicity, showed only moderate toxicity for Mn-40nm compared to similar Ag-15nm and Mn2+ doses. Mn-40nm and Mn2+ dose dependently depleted DA and its metabolites, dihydroxyphenylacetic acid (DOPAC) and homovanillic acid (HVA), while Ag-15nm only significantly reduced DA and DOPAC at concentrations of 50 μg/ml. Therefore, the DA depletion of Mn-40nm was most similar to Mn2+, which is known to induce concentration-dependent DA depletion. There was a significant increase (> 10-fold) in reactive oxygen species (ROS) with Mn-40nm exposure, suggesting that increased ROS levels may participate in DA depletion. These results clearly demonstrate that nanoscale manganese can deplete DA, DOPAC, and HVA in a dose-dependent manner. Further study is required to evaluate the specific intracellular distribution of Mn-40nm nanoparticles, metal dissolution rates in cells and cellular matrices, if DA depletion is induced in vivo, and the propensity of Mn nanoparticles to cross the blood-brain barrier or be selectively uptaken by nasal epithelium. [ABSTRACT FROM AUTHOR] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Photosynthetic oxygen evolution KW - Active oxygen KW - Cerebrospinal fluid KW - Nanoparticles N1 - Accession Number: 21756849; Saber M. Hussain 1; Amanda K. Javorina 1; Amanda M. Schrand 2; Helen M. Duhart 3; Syed F. Ali 3; John J. Schlager 1; Affiliations: 1: Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45431;; 2: Department of Chemical and Materials Engineering, University of Dayton, Dayton, Ohio 45469; and; 3: Neurochemistry Laboratory, Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, Arkansas 72079; Issue Info: Aug2006, Vol. 92 Issue 2, p456; Thesaurus Term: Photosynthetic oxygen evolution; Subject Term: Active oxygen; Subject Term: Cerebrospinal fluid; Subject Term: Nanoparticles; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=21756849&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Southby, H. Veronica T1 - A Personal Reflection. JO - Dimensions of Critical Care Nursing JF - Dimensions of Critical Care Nursing Y1 - 2006/07//Jul/Aug2006 VL - 25 IS - 4 M3 - Article SP - 172 EP - 174 PB - Springhouse Corporation SN - 07304625 AB - The article presents the author's experience about how he saved a 10-month-old infant by music therapy. The baby was a female Eskimo, who had come from Alaska for Extra Corporeal Membrane Oxygenator therapy. She was admitted in the Pediatric Intensive Care Unit (PICU). The author visited her, and sang songs for her. She started responding to the songs. According to the author, for effective music therapy in PICU, the songs should be sweet and simple, and should have a pleasing melody. KW - MUSIC therapy KW - PEDIATRIC intensive care KW - INTENSIVE care units KW - INFANTS KW - EXTRACORPOREAL membrane oxygenation KW - SONGS KW - MELODY N1 - Accession Number: 21922938; Southby, H. Veronica 1; Email Address: HeatherVeronica.Southby@lackland.AF.Mil; Source Information: Jul/Aug2006, Vol. 25 Issue 4, p172; Subject: MUSIC therapy; Subject: PEDIATRIC intensive care; Subject: INTENSIVE care units; Subject: INFANTS; Subject: EXTRACORPOREAL membrane oxygenation; Subject: SONGS; Subject: MELODY; Number of Pages: 3p; Document Type: Article; Full Text Word Count: 2277 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=21922938&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Morton, Thomas E. AU - Pasala, Krishna M. T1 - Performance Analysis of Conformal Conical Arrays for Airborne Vehicles. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2006/07// VL - 42 IS - 3 M3 - Article SP - 876 EP - 890 SN - 00189251 AB - Conformal array apertures have great potential for providing high performance, low weight systems with little or no impact to the aerodynamic design of the air vehicle. A performance analysis of conformal conical arrays for a national airborne radar application is presented. The conical array geometry is chosen for its similarity to an aircraft or missile nosecone. Performance capabilities are analyzed for a number of antenna performance parameters including scan volume, sidelobe levels, grating lobes, beamwidth, directivity, element count, and cross-polarization. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC systems KW - RADAR in aeronautics KW - RADAR KW - AERONAUTICS KW - ELECTRONIC apparatus & appliances KW - ELECTRONICS N1 - Accession Number: 23333563; Morton, Thomas E. 1; Email Address: thomas.morton@wpafb.af.mil; Pasala, Krishna M. 2; Affiliations: 1: United States Air Force Research Laboratory, 2241 Avionics Circle, Wright-Patterson AFB, OH 45433-7333.; 2: University of Dayton, 300 College Park, Dayton, OH 45469-0226.; Issue Info: Jul2006, Vol. 42 Issue 3, p876; Subject Term: ELECTRONIC systems; Subject Term: RADAR in aeronautics; Subject Term: RADAR; Subject Term: AERONAUTICS; Subject Term: ELECTRONIC apparatus & appliances; Subject Term: ELECTRONICS; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 15p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=23333563&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Blunt, Shannon D. AU - Gerlach, Karl AU - Rangaswamy, Muralidhar T1 - STAP using Knowledge-Aided Covariance Estimation and the FRACTA Algorithm. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2006/07// VL - 42 IS - 3 M3 - Article SP - 1043 EP - 1057 SN - 00189251 AB - In the airborne space-time adaptive processing (STAP) setting, a priori information via knowledge-aided covariance estimation (KACE) is employed in order to reduce the required sample support for application to heterogeneous clutter scenarios. The enhanced FRACTA (FRACTA.E) algorithm with KACE as well as Doppler-sensitive adaptive coherence estimation (DS-ACE) is applied to the KASSPER I & II data sets where it is shown via simulation that near-clairvoyant detection performance is maintained with as little as 1/3 of the normally required number of training data samples. The KASSPER I & II data sets are simulated high-fidelity heterogeneous clutter scenarios which possess several groups of dense targets. KACE provides a priori information about the clutter covariance matrix by exploiting approximately known operating parameters about the radar platform such as pulse repetition frequency (PRF), crab angle, and platform velocity. In addition, the DS-ACE detector is presented which provides greater robustness for low sample support by mitigating false alarms from undernulled clutter near the clutter ridge while maintaining sufficient sensitivity away from the clutter ridge to enable effective target detection performance. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANALYSIS of covariance KW - DETECTORS KW - ENGINEERING instruments KW - PHYSICS instruments KW - ELECTRONIC pulse techniques KW - ELECTRONIC systems N1 - Accession Number: 23333574; Blunt, Shannon D. 1; Gerlach, Karl 2; Rangaswamy, Muralidhar 3; Affiliations: 1: University of Kansas, 2335 Irving Hill Rd., Lawrence, KS 66045.; 2: U.S. Naval Research Laboratory, 4555 Overlook Ave. SW., Washington, D.C. 20375.; 3: U.S. Air Force Research Laboratory/SNHE, 80 Scott Dr., Hanscom AFB, MA 01731.; Issue Info: Jul2006, Vol. 42 Issue 3, p1043; Thesaurus Term: ANALYSIS of covariance; Subject Term: DETECTORS; Subject Term: ENGINEERING instruments; Subject Term: PHYSICS instruments; Subject Term: ELECTRONIC pulse techniques; Subject Term: ELECTRONIC systems; Number of Pages: 15p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=23333574&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Warren, D. A. AU - Graeter, L. J. AU - Channel, S. R. AU - Eggers, J. S. AU - Goodyear, C. D. AU - MacMahon, K. L. AU - Sudberry, G. L. AU - Latendresse, J. R. AU - Fisher, J. W. AU - Baker, W. H. T1 - Trichloroethylene, Trichloroacetic Acid, and Dichloroacetic Acid: Do They Affect Eye Development in the Sprague-Dawley Rat? JO - International Journal of Toxicology (Taylor & Francis) JF - International Journal of Toxicology (Taylor & Francis) Y1 - 2006/07// VL - 25 IS - 4 M3 - Article SP - 279 EP - 284 PB - Taylor & Francis Ltd SN - 10915818 AB - Maternal exposure to high doses of trichloroethylene (TCE) and its oxidative metabolites, trichloroacetic acid (TCA) and dichloroacetic acid (DCA), has been implicated in eye malformations in fetal rats, primarily micro-/anophthalmia. Subsequent to a cardiac teratology study of these compounds (Fisher et al. 2001, Int. J. Toxicol. 20:257–267), their potential to induce ocular malformations was examined in a subset of the same experimental animals. Pregnant, Sprague-Dawley Crl:CDR BR rats were orally treated on gestation days (GDs) 6 to 15 with bolus doses of either TCE (500 mg/kg/day), TCA (300 mg/kg/day), DCA (300 mg/kg/day), or all- trans retinoic acid (RA; 15 mg/kg/day). The heads of GD 21 fetuses were not only examined grossly for external malformations, but were sectioned using a modified Wilson's technique and subjected to computerized morphometry that allowed for the quantification of lens area, globe area, medial canthus distance, and interocular distance. Gross ocular malformations were essentially absent in all treatment groups except for the RA group in which 26% of fetuses exhibited micro-/anophthalmia. Using the litter as the experimental unit of analysis, lens area, globe area, and interocular distance were statistically significantly reduced in the DCA treatment group. Statistically significant reductions in lens and globe areas also occurred in the RA treatment group, all four ocular measures were reduced in the TCA treatment group but none significantly so, and TCE was without effect. Because DCA, TCA, and RA treatments were associated with significant reductions in fetal body weight (bw), data were also statistically analyzed after bw adjustment. Doing so dramatically altered the results of treatment group comparisons, but the severity of bw reduction and the degree of change in ocular measures did not always correlate. This suggests that bw reduction may not be an adequate explanation for all the changes observed in ocular measures. Thus, it is unclear whether DCA specifically disrupted ocular development even under these provocative exposure conditions. Clearly, however, if TCE is capable of disrupting ocular development in the Sprague-Dawley rat, a higher dose than that employed in the present study is required. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Toxicology (Taylor & Francis) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Trichloroethylene KW - Metabolites KW - Pathology KW - Chlorohydrocarbons KW - Biological products KW - Biomolecules KW - Research KW - Teratology KW - Anesthetics KW - Dichloroacetic Acid KW - Eye KW - Teratogen KW - Trichloroacetic Acid N1 - Accession Number: 21460053; Warren, D. A. 1; Email Address: dwarren@gwm.sc.edu; Graeter, L. J. 2; Channel, S. R. 1; Eggers, J. S. 1; Goodyear, C. D. 3; MacMahon, K. L. 1; Sudberry, G. L. 1; Latendresse, J. R. 2; Fisher, J. W. 1; Baker, W. H. 1; Affiliations: 1: Air Force Research Laboratory, Human Effectiveness Directorate, Wright-Patterson AFB, Ohio, USA; 2: ManTech Environmental Technology, Inc., Air Force Research Laboratory, Human Effectiveness Directorate, Wright-Patterson AFB, Ohio, USA; 3: Private Consultant, Dayton, Ohio, USA; Issue Info: Jul2006, Vol. 25 Issue 4, p279; Thesaurus Term: Trichloroethylene; Thesaurus Term: Metabolites; Thesaurus Term: Pathology; Thesaurus Term: Chlorohydrocarbons; Thesaurus Term: Biological products; Thesaurus Term: Biomolecules; Thesaurus Term: Research; Subject Term: Teratology; Subject Term: Anesthetics; Author-Supplied Keyword: Dichloroacetic Acid; Author-Supplied Keyword: Eye; Author-Supplied Keyword: Teratogen; Author-Supplied Keyword: Trichloroacetic Acid; NAICS/Industry Codes: 325411 Medicinal and Botanical Manufacturing; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; NAICS/Industry Codes: 325414 Biological Product (except Diagnostic) Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 6p; Illustrations: 5 Charts, 2 Graphs; Document Type: Article L3 - 10.1080/10915810600745975 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=21460053&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Riggins, David W. AU - Taylor, Trent AU - Moorhouse, David J. T1 - Methodology for Performance Analysis of Aerospace Vehicles Using the Laws of Thermodynamics. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2006/07//Jul/Aug2006 Y1 - 2006/07//Jul/Aug2006 VL - 43 IS - 4 M3 - Article SP - 953 EP - 963 SN - 00218669 AB - Theory, methodology, and example applications are developed and shown for the systematic analysis of overall vehicle forces in terms of irreversibility and heat. The methodology presented involves analyzing and Deconstructing vehicle forces using individual stream tubes as components within the overall fluid control volume in which the vehicle is embedded. This provides the capability for the complete fluid/thermodynamic "audit" of vehicle performance in terms of irreversibility, combustion (heating), and fluid dynamic flow turning and area change. Sample results are shown for a simplified hypersonic vehicle configuration modeled with constant specific heats and Rayleigh heating. The role of overall entropy generation and wake mixing processes in the production of vehicle forces in atmospheric flight is next discussed and clarified. Specifically, the direct analytical relationship between entropy, wake mixing processes, and overall force production for the vehicle is developed from fundamental considerations of the global control volume with inclusion of the wake in the analysis. This analysis is demonstrated using the same simplified high-speed configuration and is finally developed for the completely general problem of an aerospace vehicle with variable specific heats, thermal loading, variable composition, fuel injection, and chemical reaction. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUID dynamics KW - ENTROPY KW - AEROSPACE engineering KW - AERONAUTICS KW - CHEMICAL reactions N1 - Accession Number: 22180423; Source Information: Jul/Aug2006, Vol. 43 Issue 4, p953; Subject Term: FLUID dynamics; Subject Term: ENTROPY; Subject Term: AEROSPACE engineering; Subject Term: AERONAUTICS; Subject Term: CHEMICAL reactions; Subject Term: ; Number of Pages: 11p; ; Illustrations: 6 Diagrams, 4 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=22180423&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Attar, Peter J. AU - Dowell, Earl H. T1 - Stochastic Analysis of a Nonlinear Aeroelastic Model Using the Response Surface Method. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2006/07//Jul/Aug2006 Y1 - 2006/07//Jul/Aug2006 VL - 43 IS - 4 M3 - Article SP - 1044 EP - 1052 SN - 00218669 AB - An efficient method is presented for quantifying the effect of parametric uncertainty on the response of a nonlinear aeroelastic system. The proposal stochastic model uses a response surface method to map the random input parameters of the system to the specified system output (in this instance root-mean square wing tip response). To handle the bifurcation in the response surface due to aeroelastic self-excited instability, the response surface model is fit using a two region regression. The results from this model are compared to those from a full Monte Carlo simulation for both a one-dimensional random input parameter model (thickness) and a two-dimensional random input parameter model (thickness and modulus of elasticity). The response surface method results compare favorably with the full model results while achieving a 2 to 3 order of magnitude gain in computational efficiency. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - STOCHASTIC processes KW - MATHEMATICAL models KW - MONTE Carlo method KW - SIMULATION methods & models N1 - Accession Number: 22180434; Source Information: Jul/Aug2006, Vol. 43 Issue 4, p1044; Subject Term: AEROELASTICITY; Subject Term: STOCHASTIC processes; Subject Term: MATHEMATICAL models; Subject Term: MONTE Carlo method; Subject Term: SIMULATION methods & models; Subject Term: ; Number of Pages: 9p; ; Illustrations: 17 Graphs; ; Document Type: Article; L3 - 10.2514/1.17525 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=22180434&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Lips, John A. AU - Kasper, Eric P. AU - Welsh, Jeffry S. T1 - Finite Element Methods for the Frequency Response Prediction of Bonded Composite Structures. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2006/07// VL - 40 IS - 13 M3 - Article SP - 1175 EP - 1192 SN - 00219983 AB - The present study examines the effect bonded lap joints have on the frequency response of a given structure. The test article developed consist of carbon fiber composite sections joined with epoxy single-lap joints. The motivation for this study stems from the initial findings of previous works conducted at the Air Force Research Laboratory. This work shows the key factors affecting the influence of bonded lap joints on the system frequency to be: section stiffness, bond configuration and type, boundary conditions, and mass distribution. In addition, sensitivity analyses conducted give direction to the level of detail necessary to model bonded lap joints with adequate efficiency and accuracy. To aid in determining an effective and accurate methodology, the following sensitivity studies are conducted: element formulation, composite ply angle, and mesh discretization. Validation of these studies with experimental data for various configurations allow for an uncertainty assessment of the numerical data presented. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON fibers KW - COMPOSITE materials KW - BOUNDARY value problems KW - METHODOLOGY KW - NUMERICAL analysis KW - bonded KW - composite KW - finite element KW - frequency response KW - single-lap joint KW - stiffness N1 - Accession Number: 21599219; Lips, John A. 1; Email Address: john.lips@kirtland.af.mil; Kasper, Eric P. 2; Welsh, Jeffry S. 1; Source Information: Jul2006, Vol. 40 Issue 13, p1175; Subject: CARBON fibers; Subject: COMPOSITE materials; Subject: BOUNDARY value problems; Subject: METHODOLOGY; Subject: NUMERICAL analysis; Author-Supplied Keyword: bonded; Author-Supplied Keyword: composite; Author-Supplied Keyword: finite element; Author-Supplied Keyword: frequency response; Author-Supplied Keyword: single-lap joint; Author-Supplied Keyword: stiffness; Number of Pages: 18p; Illustrations: 9 Diagrams, 8 Charts, 6 Graphs; Document Type: Article L3 - 10.1177/0021998305057465 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=21599219&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 2006-08113-001 AN - 2006-08113-001 AU - Boff, Kenneth R. T1 - Revolutions and shifting paradigms in human factors & ergonomics. JF - Applied Ergonomics JO - Applied Ergonomics JA - Appl Ergon Y1 - 2006/07// VL - 37 IS - 4 SP - 391 EP - 399 CY - Netherlands PB - Elsevier Science SN - 0003-6870 AD - Boff, Kenneth R., Air Force Research Laboratory/Human Effectiveness (AFRL/HE), 2610 Seventh Street, Bld 441, Wright-Patterson AFB, OH, US, 45433-7901 N1 - Accession Number: 2006-08113-001. PMID: 16756939 Partial author list: First Author & Affiliation: Boff, Kenneth R.; Air Force Research Laboratory/Human Effectiveness (AFRL/HE), Wright-Patterson AFB, OH, US. Release Date: 20061226. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Human Factors Engineering; Technology. Classification: Human Factors Engineering (4010). Population: Human (10). References Available: Y. Page Count: 9. Issue Publication Date: Jul, 2006. AB - The 'Revolution in Information Technology' has spawned a series of transformational revolutions in the nature and practice of human factors and ergonomics (HFE). 'Generation 1' HFE evolved with a focus on adapting equipment, workplace and tasks to human capabilities and limitations. Generation 2, focused on cognitive systems integration, arose in response to the need to manage automation and dynamic function allocation. Generation 3 is focused on symbiotic technologies that can amplify human physical and cognitive capabilities. Generation 4 is emergent and is focused on biological enhancement of physical or cognitive capabilities. The shift from HFE Generations 1 and 2 to Generations 3 and 4 profoundly alters accepted boundary constraints on the adaptability of humans in complex systems design. Furthermore, it has opened an ethical divide between those that see cognitive and physical enhancement as a great benefit to society and those who perceive this as tampering with the fundamentals of human nature. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - human factors KW - ergonomics KW - information technology KW - 2006 KW - Human Factors Engineering KW - Technology KW - 2006 DO - 10.1016/j.apergo.2006.04.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-08113-001&site=ehost-live&scope=site UR - ken.boff@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Cohen, Samuel A. AU - Xuan Sun AU - Ferraro, Nathaniel M. AU - Scime, Earl E. AU - Miah, Mahmood AU - Stange, Sy AU - Siefert, Nicholas S. AU - Boivin, Robert F. T1 - On Collisionless Ion and Electron Populations in the Magnetic Nozzle Experiment (MNX). JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2006/06/02/Jun2006 Part 2 Y1 - 2006/06/02/Jun2006 Part 2 VL - 34 IS - 3 M3 - Article SP - 792 EP - 803 SN - 00933813 AB - The Magnetic Nozzle Experiment (MNX) is a linear magnetized helicon-heated plasma device, with applications to advanced spacecraft-propulsion methods and solar-corona physics. This paper reviews ion and electron energy distributions measured in MNX with laser-induced fluorescence (LIF) and probes, respectively. Ions, cold and highly collisional in the main MNX region, are accelerated along a uniform magnetic field to sonic then supersonic speeds as they exit the main region through either mechanical or magnetic apertures. A sharp decrease in density down- stream of the aperture(s) helps effect a transition from collisional to collisionless plasma. The electrons in the downstream region have an average energy somewhat higher than that in the main region. From LIF ion-velocity measurements, we find upstream of the aperture a presheath of strength Δϕps = mrTe, where mrTe is the electron temperature in the main region, and length ∼3 cm, comparable to the ion-neutral mean-free-path; immediately downstream of the aperture is an electrostatic double layer of strength ΔϕDL 3-10 mrTe and length 0.3-0.6 cm, 30-600λD. The existence of a small, ca. 0.1%, superthermal electron population with average energy ∼10 mrTe is inferred from considerations of spectroscopic line ratios, floating potentials, and Langmuir probe data. The superthermal electrons are suggested to be the source for the large ΔϕDL . [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA devices KW - SPACE flight propulsion systems KW - SOLAR corona KW - ELECTRON distribution KW - IONS KW - MAGNETIC fields N1 - Accession Number: 21399933; Source Information: Jun2006 Part 2, Vol. 34 Issue 3, p792; Subject Term: PLASMA devices; Subject Term: SPACE flight propulsion systems; Subject Term: SOLAR corona; Subject Term: ELECTRON distribution; Subject Term: IONS; Subject Term: MAGNETIC fields; Subject Term: ; Number of Pages: 12p; ; Illustrations: 8 Black and White Photographs, 1 Diagram, 1 Chart, 11 Graphs; ; Document Type: Article; L3 - 10.1109/TPS.2006.875846 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=21399933&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Demidov, Vladimir AU - DeJoseph, Jr., Charles AU - Kudryavtsev, Anatoly T1 - Nonlocal Effects in a Bounded Afterglow Plasma With Fast Electrons. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2006/06/02/Jun2006 Part 2 Y1 - 2006/06/02/Jun2006 Part 2 VL - 34 IS - 3 M3 - Article SP - 825 EP - 833 SN - 00933813 AB - Effects connected with nonlocality of the electron energy distribution function (EEDF in a bounded, afterglow plasma with fast electrons can lead to a significant (many times of Te /e) increase in the near-wall potential drop, even if the density of this fast group is only a small fraction of the total electron density. This can substantially change the near-wall sheath thickness and electric field. Nonlocal fast electrons which are partially trapped in the plasma volume can increase the rate of stepwise excitation, supply additional heating to slow electrons and reduce their diffusion cooling rate. Altering the source terms of these fast electrons, to change their production rate will, therefore, alter the near-wall sheath and, through modification of the EEDF, a number of plasma parameters. Another possibility of modifying the EEDF is by application of a negative potential to a portion of the plasma boundary. This can allow modification of the past part of the EEDF. The above effects and methods can be used in various research and technical applications. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON distribution KW - ELECTRON transport KW - ELECTRIC fields KW - ELECTRONS -- Diffusion KW - PLASMA sheaths KW - PLASMA (Ionized gases) N1 - Accession Number: 21399936; Source Information: Jun2006 Part 2, Vol. 34 Issue 3, p825; Subject Term: ELECTRON distribution; Subject Term: ELECTRON transport; Subject Term: ELECTRIC fields; Subject Term: ELECTRONS -- Diffusion; Subject Term: PLASMA sheaths; Subject Term: PLASMA (Ionized gases); Subject Term: ; Number of Pages: 9p; ; Illustrations: 3 Black and White Photographs, 1 Diagram, 10 Graphs; ; Document Type: Article; L3 - 10.1109/TPS.2006.872338 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=21399936&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - McAree, Paul AU - Bodin, Lawrence AU - Ball, Michael AU - Segars, James T1 - Design of the federal express large package sort facility. JO - Annals of Operations Research JF - Annals of Operations Research Y1 - 2006/06// VL - 144 IS - 1 M3 - Article SP - 133 EP - 152 SN - 02545330 AB - In this paper, two mixed integer programming models, the Aggregate Bin Assignment Model (ABAM) and Aggregate Rack Assignment Model (ARAM), are developed for the analysis of possible large package sort facility designs for Federal Express Corporation. Applying the ABAM and RAM algorithm on the current topological design of the sort facility reduces the number of forklifts and total forklift travel time for accomplishing the sort by about 20%. Tests on 16 other configurations proposed by Federal Express indicated that savings of 33% with respect to the number of forklifts required and over 50% in the total forklift travel time when compared to the existing operations can be achieved. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of Operations Research is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BUSINESS logistics KW - MATERIALS handling KW - INTEGER programming KW - WAREHOUSES -- Management KW - Heuristic algorithm KW - Mixed integer program KW - FEDERAL Express Corp. N1 - Accession Number: 22081981; McAree, Paul 1; Bodin, Lawrence 2; Email Address: lbodin@rhsmith.umd.edu; Ball, Michael 2; Segars, James 3; Affiliations: 1: United States Air Force, Washington, DC, USA; 2: Robert H. Smith School of Business, University of Maryland, College Park, MD 20742, USA; 3: Federal Express Corporation, Memphis, TE, USA; Issue Info: Jun2006, Vol. 144 Issue 1, p133; Thesaurus Term: BUSINESS logistics; Thesaurus Term: MATERIALS handling; Thesaurus Term: INTEGER programming; Thesaurus Term: WAREHOUSES -- Management; Author-Supplied Keyword: Heuristic algorithm; Author-Supplied Keyword: Mixed integer program ; Company/Entity: FEDERAL Express Corp. DUNS Number: 058070459; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; NAICS/Industry Codes: 493190 Other Warehousing and Storage; NAICS/Industry Codes: 493110 General Warehousing and Storage; NAICS/Industry Codes: 236220 Commercial and Institutional Building Construction; Number of Pages: 20p; Illustrations: 9 Diagrams, 7 Charts, 6 Graphs; Document Type: Article L3 - 10.1007/s10479-006-0005-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=22081981&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Leungsakul, Thammajun AU - Johnson, Glenn R. AU - Wood, Thomas K. T1 - Protein Engineering of the 4-Methyl-5-Nitrocatechol Monooxygenase from Burkholderia sp. Strain DNT for Enhanced Degradation of Nitroaromatics. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2006/06// VL - 72 IS - 6 M3 - Article SP - 3933 EP - 3939 SN - 00992240 AB - 4-Methyl-5-nitrocatechol (4M5NC) monooxygenase (DntB) from Burkholderia sp. strain DNT catalyzes the second step of 2,4-dinitrotoluene degradation by converting 4M5NC to 2-hydroxy-5-methylquinone with the concomitant removal of the nitro group. DntB is a flavoprotein that has a very narrow substrate range. Here, error-prone PCR was used to create variant DntB M22L/L380I, which accepts the two new substrates 4-nitrophenol (4NP) and 3-methyl-4-nitrophenol (3M4NP). At 300 μM of 4NP, the initial rate of the variant expressing M22L/L380I enzyme (39 ± 6 nmol/min/mg protein) was 10-fold higher than that of the wild-type enzyme (4 ± 2 nmol/min/mg protein). The values of kcat/Km of the purified wild-type DntB enzyme and purified variant M22L/L380I were 40 and 450 (s-1 M-1), respectively, which corroborates that the variant M22L/L380I enzyme has 11-fold-higher efficiency than the wild-type enzyme for 4NP degradation. In addition, the variant M22L/L380I enzyme has fourfold-higher activity toward 3M4NP; at 300 μM, the initial nitrite release rate of M22L/L380I enzyme was 17 ± 4 nmol/min/mg protein, while that of the wild-type enzyme was 4.4 ± 0.7 nmol/min/mg protein. Saturation mutagenesis was also used to further investigate the role of the individual amino acid residues at positions M22, L380, and M22/L380 simultaneously. Mutagenesis at the individual positions M22L and L380I did not show appreciable enhancement in 4NP activity, which suggested that these two sites should be mutated together; simultaneous saturation mutagenesis led to the identification of the variant M22S/L380V, with 20% enhanced degradation of 4NP compared to the variant M22L/L380I. This is the first report of protein engineering for nitrite removal by a flavoprotein. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Microbiology KW - Microbial ecology KW - Monooxygenases KW - Nitroaromatic compounds KW - Polymerase chain reaction KW - Nitrophenols KW - Nitro compounds KW - Enzymes KW - Mutagenesis KW - Protein engineering KW - Flavoproteins N1 - Accession Number: 21366082; Leungsakul, Thammajun 1,2,3,4; Johnson, Glenn R. 5; Wood, Thomas K. 1,2,3; Email Address: Thomas.Wood@chemail.tamu.edu; Affiliations: 1: Artie McFerrin Department of Chemical Engineering, 220 Jack E. Brown Building Texas A&M University, College Station, Texas 77843-3122; 2: Department of Biology, 220 Jack E. Brown Building Texas A&M University, College Station, Texas 77843-3122; 3: Department of and Civil/Environmental Engineering, 220 Jack E. Brown Building Texas A&M University, College Station, Texas 77843-3122; 4: Sirindhorn International Institute of Technology, School of Bio-Chemical Engineering and Technology, Thammasat University, P.O. Box 22, Thammasat Rangsit Post Office, Pathumthani 12121, Thailand; 5: Air Force Research Laboratory, U.S. Air Force, Tyndall Air Force Base, Florida 324032; Issue Info: Jun2006, Vol. 72 Issue 6, p3933; Thesaurus Term: Microbiology; Thesaurus Term: Microbial ecology; Subject Term: Monooxygenases; Subject Term: Nitroaromatic compounds; Subject Term: Polymerase chain reaction; Subject Term: Nitrophenols; Subject Term: Nitro compounds; Subject Term: Enzymes; Subject Term: Mutagenesis; Subject Term: Protein engineering; Subject Term: Flavoproteins; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 7p; Illustrations: 4 Charts; Document Type: Article L3 - 10.1128/AEM.02966-05 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=21366082&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hansen, John C. T1 - Human Capital Improvement. JO - Armed Forces Comptroller JF - Armed Forces Comptroller Y1 - 2006///Summer2006 VL - 51 IS - 3 M3 - Article SP - 28 EP - 29 PB - American Society of Military Comptrollers SN - 00042188 AB - The article stresses the importance of improving the financial management workforce of the U.S. Air Force. The author notes that advanced education for Air Force financial managers are key to combating significant reductions in the force. Secretary of the Air Force Michael W. Wynne announced in December 2005 that the service will cut a significant portion of its support contractors, which further increase the demands on those personnel that remains in the force. INSET: Financial Management Operation and Maintenance Center of…. KW - LABOR supply KW - FINANCIAL executives KW - CIVIL service KW - UNITED States KW - UNITED States. Air Force KW - WYNNE, Michael, 1944- N1 - Accession Number: 25759633; Hansen, John C. 1; Affiliations: 1: Financial management and leadership intern, Headquarters Air Education and Training Command, Randolph Air Force Base, Texas; Issue Info: Summer2006, Vol. 51 Issue 3, p28; Thesaurus Term: LABOR supply; Thesaurus Term: FINANCIAL executives; Thesaurus Term: CIVIL service; Subject: UNITED States ; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 921190 Other General Government Support; NAICS/Industry Codes: 561320 Temporary Help Services; NAICS/Industry Codes: 928110 National Security; People: WYNNE, Michael, 1944-; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=25759633&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Murphy, Ryan O. AU - Rapoport, Amnon AU - Parco, James E. AD - Center for the Decision Sciences, Columbia U AD - U AZ and Hong Kong U Science and Technology AD - US Air Force Academy T1 - The Breakdown of Cooperation in Iterative Real-Time Trust Dilemmas JO - Experimental Economics JF - Experimental Economics Y1 - 2006/06// VL - 9 IS - 2 SP - 147 EP - 166 SN - 13864157 N1 - Accession Number: 0869943; Keywords: Cooperation; Payoff Function; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 200611 N2 - We study a class of trust-based cooperation dilemmas that evolve in continuous time. Characteristic of these dilemmas is that as long as all n players continue to cooperate, their payoffs increase monotonically over time. Simultaneously, the temptation to defect increases too, as the first player to defect terminates the interaction and receives the present value of the payoff function whereas each of the other n ? 1 players only receives a proportion delta (0 < delta < 1) of the defecting player's payoff. We introduce a novel experimental institution that we call the Real-Time Trust Game (RTTG) to examine this class of interactions. We then report the results from an iterated RTTG in which the values of n and delta are varied in a between-subjects design. In all conditions, cooperation breaks down in the population over iterations of the game. The rate of breakdown sharply increases as n increases and more slowly decreases as delta increases. KW - Cooperative Games C71 KW - Noncooperative Games C72 KW - Design of Experiments: Laboratory, Group Behavior C92 KW - Economic Sociology; Economic Anthropology; Social and Economic Stratification Z13 L3 - http://link.springer.com/journal/volumesAndIssues/10683 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0869943&site=ehost-live&scope=site UR - http://dx.doi.org/10.1007/s10683-006-7049-4 UR - http://link.springer.com/journal/volumesAndIssues/10683 DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Polak, M. AU - Demencik, E. AU - Jansak, L. AU - Usak, E. AU - Mozola, P. AU - Thieme, C. L. H. AU - Aized, D. AU - Levin, G. A. AU - Barnes, P. N. T1 - Properties of a YBCO Pancake Coil Operating With AC Current at Frequencies up to 1000 Hz. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2006/06// Y1 - 2006/06// VL - 16 IS - 2 M3 - Article SP - 1423 EP - 1426 SN - 10518223 AB - A small pancake coil was wound using 1.2 m long, 10 mm wide YBCO coated superconductor tape with impregnation by epoxy resin. The coil was immersed in liquid nitrogen and tested in several regimes. In the DC regime, we measured the I–V curve, the hysteresis of the magnetic field-current curve at liquid nitrogen temperature and the radial component of the coil field at the coil edges. The critical currents of a short sample at 77 K were also measured and compared with those of the coil. The AC losses measured in the frequency range from 60 Hz to 1000 Hz are compared with those of a similar coil wound with copper tape. The coil heating due to AC losses was monitored. At 60 Hz, the losses of the YBCO coil were nearly two orders of magnitude lower than those in the Cu coil. With increasing frequency, this difference becomes smaller, but the YBCO coil still exhibited lower losses at 1000 Hz. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPOXY resins KW - MAGNETIC fields KW - MAGNETIC induction KW - SUPERCONDUCTIVITY KW - LIQUID nitrogen KW - HIGH temperature superconductors N1 - Accession Number: 23036020; Source Information: Jun2006, Vol. 16 Issue 2, p1423; Subject Term: EPOXY resins; Subject Term: MAGNETIC fields; Subject Term: MAGNETIC induction; Subject Term: SUPERCONDUCTIVITY; Subject Term: LIQUID nitrogen; Subject Term: HIGH temperature superconductors; Subject Term: ; Number of Pages: 4p; ; Illustrations: 1 Black and White Photograph, 8 Graphs; ; Document Type: Article; L3 - 10.1109/TASC.2006.870774 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=23036020&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Coutu Jr., Ronald A. AU - Reid, James R. AU - Cortez, Rebecca AU - Strawser, Richard E. AU - Kladitis, Paul E. T1 - Microswitches with Sputtered Au, AuPd, Au-on-AuPt, and AuPtCu Alloy Electric Contacts. JO - IEEE Transactions on Components & Packaging Technologies JF - IEEE Transactions on Components & Packaging Technologies J1 - IEEE Transactions on Components & Packaging Technologies PY - 2006/06// Y1 - 2006/06// VL - 29 IS - 2 M3 - Article SP - 341 EP - 349 SN - 15213331 AB - This paper is the first to report on a new analytic model for predicting microcontact resistance and the design, fabrication, and testing of microelectromechanical systems (MEMS) metal contact switches with sputtered bimetallic (i.e., gold (Au)-on-Au-platinum (Pt), (Au-on-Au-(6.3at%)Pt)), binary alloy (i.e., Au-palladium (Pd), (Au-(3.7at%)Pd)), and ternary alloy (i.e., Au-Pt-copper (Cu), (Au-(5.0at%)Pt-(0.5at%)Cu)) electric contacts. The microswitches with bimetallic and binary alloy contacts resulted in contact resistance values between 1-2 Ω. Preliminary reliability testing indicates a 3x increase in switching lifetime when compared to microswitches with sputtered Au electric contacts. The ternary alloy exhibited approximately a 6x increase in switch lifetime with contact resistance values ranging from approximately 0.2-1.8 Ω. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Components & Packaging Technologies is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTROMECHANICAL systems KW - ELECTRIC switchgear KW - ELECTRIC contacts KW - ELECTRIC resistance KW - GOLD N1 - Accession Number: 21109678; Source Information: Jun2006, Vol. 29 Issue 2, p341; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: ELECTRIC switchgear; Subject Term: ELECTRIC contacts; Subject Term: ELECTRIC resistance; Subject Term: GOLD; Subject Term: ; Number of Pages: 9p; ; Illustrations: 5 Diagrams, 1 Chart, 6 Graphs; ; Document Type: Article; L3 - 10.1109/TCAPT.2006.875898 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=21109678&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - White, William M. AU - Gilgenbach, Ronald M. AU - Jones, Michael C. AU - Neculaes, V. Bogdan AU - Yue Ying Lau AU - Pengvanich, P. AU - Jordan, Nicholas M. C. AU - Hoff, Brad W. AU - Edgar, Ryan AU - Spencer, Thomas A. AU - Price, David T1 - Radio Frequency Priming of a Long-Pulse Relativistic Magnetron. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2006/06//Jun2006 Part 1 Y1 - 2006/06//Jun2006 Part 1 VL - 34 IS - 3 M3 - Article SP - 627 EP - 634 SN - 00933813 AB - Rapid startup, increased pulsewidth, and mode locking of magnetrons have been explored experimentally on a relativistic magnetron by radio frequency (RF) priming. Experiments utilize a -300 kV, 2-8 kA, 300-500-ns electron beam to drive a Titan six-vane relativistic magnetron (5-100 MW output power in each of the three waveguides). The RF priming source is a 100-kW pulsed magnetron operating at 1.27-1.32 GHz. Tuning stubs are utilized in the Titan structure to adjust the frequency of the relativistic magnetron to match that of the priming source. Experiments are performed on rising sun as well as standard anode configurations. Magnetron start-oscillation time, pulsewidth, and π-mode locking are compared with RF priming versus the unprimed case. The results show significant reductions in microwave output delay and mode competition even when Adler's Relation is not satisfied. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO frequency KW - MAGNETRONS KW - ELECTRIC oscillators KW - WAVEGUIDES KW - ELECTRON beams KW - ELECTRON emission N1 - Accession Number: 21399917; Source Information: Jun2006 Part 1, Vol. 34 Issue 3, p627; Subject Term: RADIO frequency; Subject Term: MAGNETRONS; Subject Term: ELECTRIC oscillators; Subject Term: WAVEGUIDES; Subject Term: ELECTRON beams; Subject Term: ELECTRON emission; Subject Term: ; Number of Pages: 8p; ; Illustrations: 8 Black and White Photographs, 1 Diagram, 2 Charts, 9 Graphs; ; Document Type: Article; L3 - 10.1109/TPS.2006.875829 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=21399917&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Wightman, Frederic AU - Kistler, Doris AU - Brungart, Douglas T1 - Informational masking of speech in children: Auditory-visual integration. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2006/06// VL - 119 IS - 6 M3 - Article SP - 3940 EP - 3949 SN - 00014966 AB - The focus of this study was the release from informational masking that could be obtained in a speech task by viewing a video of the target talker. A closed-set speech recognition paradigm was used to measure informational masking in 23 children (ages 6–16 years) and 10 adults. An audio-only condition required attention to a monaural target speech message that was presented to the same ear with a time-synchronized distracter message. In an audiovisual condition, a synchronized video of the target talker was also presented to assess the release from informational masking that could be achieved by speechreading. Children required higher target/distracter ratios than adults to reach comparable performance levels in the audio-only condition, reflecting a greater extent of informational masking in these listeners. There was a monotonic age effect, such that even the children in the oldest age group (12–16.9 years) demonstrated performance somewhat poorer than adults. Older children and adults improved significantly in the audiovisual condition, producing a release from informational masking of 15 dB or more in some adult listeners. Audiovisual presentation produced no informational masking release for the youngest children. Across all ages, the benefit of a synchronized video was strongly associated with speechreading ability. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPEECH KW - CHILDREN -- Language KW - SPEECH perception KW - AGE groups KW - AUDITORY perception N1 - Accession Number: 21126568; Wightman, Frederic 1; Email Address: fred.wightman@louisville.edu; Kistler, Doris 1; Brungart, Douglas 2; Affiliations: 1 : Heuser Hearing Institute and Department of Psychological and Brain Sciences, University of Louisville, Louisville, Kentucky 40292; 2 : Human Effectiveness Directorate, Air Force Research Laboratory, 2610 Seventh Street Wright Patterson AFB, OH 45433; Source Info: Jun2006, Vol. 119 Issue 6, p3940; Subject Term: SPEECH; Subject Term: CHILDREN -- Language; Subject Term: SPEECH perception; Subject Term: AGE groups; Subject Term: AUDITORY perception; Number of Pages: 10p; Illustrations: 8 Graphs; Document Type: Article L3 - 10.1121/1.2195121 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=21126568&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR AU - Cook, Martin T1 - Our Endangered Values: America's Moral Crisis. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College J1 - Parameters: U.S. Army War College PY - 2006///Summer2006 Y1 - 2006///Summer2006 VL - 36 IS - 2 M3 - Book Review SP - 124 EP - 126 SN - 00311723 AB - The article reviews the book "Our Endangered Values: America's Moral Crisis," by Jimmy Carter. KW - OUR Endangered Values: America's Moral Crisis (Book) KW - CARTER, Jimmy, 1924- KW - SOCIAL values KW - NONFICTION N1 - Accession Number: 21101073; Source Information: Summer2006, Vol. 36 Issue 2, p124; Subject Term: OUR Endangered Values: America's Moral Crisis (Book); Subject Term: CARTER, Jimmy, 1924-; Subject Term: SOCIAL values; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=21101073&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2006-06840-004 AN - 2006-06840-004 AU - Gao, J. B. AU - Billock, V. A. AU - Merk, I. AU - Tung, W. W. AU - White, K. D. AU - Harris, J. G. AU - Roychowdhury, V. P. T1 - Inertia and memory in ambiguous visual perception. JF - Cognitive Processing JO - Cognitive Processing JA - Cogn Process Y1 - 2006/06// VL - 7 IS - 2 SP - 105 EP - 112 CY - Germany PB - Springer SN - 1612-4782 SN - 1612-4790 AD - Gao, J. B., Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL, US, 32611 N1 - Accession Number: 2006-06840-004. PMID: 16683173 Partial author list: First Author & Affiliation: Gao, J. B.; Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL, US. Release Date: 20060724. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Binocular Vision; Memory. Minor Descriptor: Visual Perception. Classification: Visual Perception (2323). Population: Human (10). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 8. Issue Publication Date: Jun, 2006. AB - Perceptual multistability during ambiguous visual perception is an important clue to neural dynamics. We examined perceptual switching during ambiguous depth perception using a Necker cube stimulus, and also during binocular rivalry. Analysis of perceptual switching time series using variance-sample size analysis, spectral analysis and time series shuffling shows that switching times behave as a 1/f noise and possess very long range correlations. The long memory feature contrasts sharply with the traditional satiation models of multistability, where the memory is not incorporated, as well as with recently published models of multistability and neural processing, where memory is excluded. On the other hand, the long memory feature favors the concept of 'dynamic core' or coalition of neurons, where neurons form transient coalitions. Perceptual switching then corresponds to replacement of one coalition of neurons by another. The inertia and memory measures the stability of a coalition: a strong and stable coalition has to be won over by another similarly strong and stable coalition, resulting in long switching times. The complicated transient dynamics of competing coalitions of neurons may be addressable using a combination of functional imaging, measurement of frequency-tagged magnetoencephalography and frequency-tagged encephalography, simultaneous recordings of groups of neurons in many areas of the brain, and concepts from statistical mechanics and nonlinear dynamics theory. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - inertia KW - memory KW - ambiguous visual perception KW - binocular rivalry KW - 2006 KW - Binocular Vision KW - Memory KW - Visual Perception KW - 2006 DO - 10.1007/s10339-006-0030-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-06840-004&site=ehost-live&scope=site UR - gao@ece.ufl.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-08479-005 AN - 2006-08479-005 AU - Powell, Shawn AU - Northern, Bobby T1 - Assessing and treating depression in adolescents who are more than moody. JF - School Psychology Quarterly JO - School Psychology Quarterly JA - Sch Psychol Q Y1 - 2006///Sum 2006 VL - 21 IS - 2 SP - 225 EP - 232 CY - US PB - Guilford Publications SN - 1045-3830 SN - 1939-1560 AD - Powell, Shawn, P.O. Box 2914, Cheyenne, WY, US, 82003 N1 - Accession Number: 2006-08479-005. Other Journal Title: Professional School Psychology. Partial author list: First Author & Affiliation: Powell, Shawn; United States Air Force Academy, Colorado Springs, CO, US. Other Publishers: Educational Publishing Foundation; Lawrence Erlbaum. Release Date: 20060731. Correction Date: 20111024. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Review-Book. Language: English. Major Descriptor: Adolescent Psychiatry; At Risk Populations; Emotional States; Major Depression; Treatment. Minor Descriptor: Age Differences. Classification: Affective Disorders (3211). Population: Human (10). Reviewed Item: Koplewicz, H.S. More than Moody: Recognizing and treating adolescent depression=New York: G.T. Putnam's Sons, 366 pages. Hardcover, $25.95; 2002. References Available: Y. Page Count: 8. Issue Publication Date: Sum 2006. Copyright Statement: Division 16, American Psychological Association. 2006. AB - Reviews the book, More than Moody: Recognizing and treating adolescent depression by H.S. Koplewicz (see record [rid]2004-14039-000[/rid]). Childhood and adolescent depression is seldom reported and often under-treated in the United States. Children with depression are at high risk of developing other disorders. The book consists of 12 chapters. Each chapter contains case studies that provide a detailed understanding of the difficulties experienced by adolescents with depression and the resulting impact on their families. Compared to adults with depression, most adolescents manifest unique differences in their experiences of depression. The author reports that adolescents with depression may experience enjoyment and occasionally feel good compared to adults with depression who rarely experience pleasure. The book's main assets are its well-written case studies, which are easy to follow and comprehend. These qualitative descriptions of the treatment of numerous adolescents experiencing depression, couched in the trials of adolescent development, relay essential information to parents and professionals. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - moodiness KW - adolescent depression KW - at high risk KW - treatment KW - age differences KW - 2006 KW - Adolescent Psychiatry KW - At Risk Populations KW - Emotional States KW - Major Depression KW - Treatment KW - Age Differences KW - 2006 U2 - Koplewicz, H.S. (2002); More than Moody: Recognizing and treating adolescent depression; New York: G.T. Putnam's Sons, 366 pages. Hardcover, $25.95 DO - 10.1521/scpq.2006.21.2.225 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-08479-005&site=ehost-live&scope=site UR - shawnpowellphd@netscape.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-08395-005 AN - 2006-08395-005 AU - Roth, E. AU - Scott, R. AU - Deutsch, S. AU - Kuper, S. AU - Schmidt, V. AU - Stilson, M. AU - Wampler, J. T1 - Evolvable work-centred support systems for command and control: Creating systems users can adapt to meet changing demands. JF - Ergonomics JO - Ergonomics JA - Ergonomics Y1 - 2006/06// VL - 49 IS - 7 SP - 688 EP - 705 CY - United Kingdom PB - Taylor & Francis SN - 0014-0139 SN - 1366-5847 AD - Roth, E. N1 - Accession Number: 2006-08395-005. PMID: 16720529 Partial author list: First Author & Affiliation: Roth, E.; Roth Cognitive Engineering, Brookline, MA, US. Release Date: 20060710. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Atmospheric Conditions; Decision Support Systems; Military Psychology; Monitoring; Organizations. Minor Descriptor: Aircraft. Classification: Military Psychology (3800); Human Factors Engineering (4010). Population: Human (10). References Available: Y. Page Count: 18. Issue Publication Date: Jun, 2006. AB - Military command and control (C2) organizations are complex sociotechnical systems which must constantly adapt to meet changing operational requirements. We describe our experiences in developing a work-centred support system (WCSS) to aid weather forecasting and monitoring in a military airlift C2 organization as an illustrative case. As part of the development process we conducted field observations both before and after introduction of the WCSS in their operations centre. A striking finding was the constant changes that operations personnel faced (changes in goals and priorities, changes in scale of operations, changes in team roles and structure, and changes in information sources and systems). We describe the changes in workplace demands that we observed and the modifications we needed to make to the WCSS in response. For today's fielded systems, it is seldom possible to make changes that are responsive to users' changing requirements in a timely manner. We argue for the need to incorporate facilities that enable users to adapt their systems to the changing requirements of work and point to some promising directions towards evolvable work-centred support systems. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - support systems KW - systems users KW - military command KW - military control KW - organizations KW - weather forecasting KW - monitoring KW - military airlift KW - 2006 KW - Atmospheric Conditions KW - Decision Support Systems KW - Military Psychology KW - Monitoring KW - Organizations KW - Aircraft KW - 2006 DO - 10.1080/00140130600612556 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-08395-005&site=ehost-live&scope=site UR - emroth@mindspring.com DP - EBSCOhost DB - psyh ER - TY - RPRT AU - Dimiduk, Dennis M. AU - Woodward, Chris AU - LeSar, Richard AU - Uchic, Michael D. T1 - Scale-Free Intermittent Flow in Crystal Plasticity. JO - Science JF - Science Y1 - 2006/05/26/ VL - 312 IS - 5777 M3 - Report SP - 1188 EP - 1190 SN - 00368075 AB - Under stress, crystals irreversibly deform through complex dislocation processes that intermittently change the microscopic material shape through isolated slip events. These underlying processes can be revealed in the statistics of the discrete changes. Through ultraprecise nanoscale measurements on nickel microcrystals, we directly determined the size of discrete slip events. The sizes ranged over nearly three orders of magnitude and exhibited a shock-and-aftershock, earthquake-like behavior over time. Analysis of the events reveals power-law scaling between the number of events and their magnitude, or scale-free flow. We show that dislocated crystals are a model system for studying scale-free behavior as observed in many macroscopic systems. In analogy to plate tectonics, smooth macroscopic-scale crystalline glide arises from the spatial and time averages of disruptive earthquake-like events at the nanometer scale. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Plate tectonics KW - Nickel KW - Geodynamics KW - Crystals KW - Nanostructured materials KW - Metallography KW - Crystallography KW - Microscopy -- Technique KW - Nanoscience N1 - Accession Number: 21178487; Dimiduk, Dennis M. 1; Email Address: dennis.dimiduk@wpafb.af.mil; Woodward, Chris 2; LeSar, Richard 3; Uchic, Michael D. 1; Affiliations: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright-Patterson AFB, OH 45433, USA.; 2: Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA.; 3: Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.; Issue Info: 5/26/2006, Vol. 312 Issue 5777, p1188; Thesaurus Term: Plate tectonics; Thesaurus Term: Nickel; Thesaurus Term: Geodynamics; Subject Term: Crystals; Subject Term: Nanostructured materials; Subject Term: Metallography; Subject Term: Crystallography; Subject Term: Microscopy -- Technique; Subject Term: Nanoscience; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 3p; Document Type: Report UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=21178487&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Rooney, Andrew A. AU - Mattie, David R. AU - Dodd, Darol E. T1 - Introduction—Toxicology and Risk Assessment Conference 2005. JO - Journal of Toxicology & Environmental Health: Part A JF - Journal of Toxicology & Environmental Health: Part A Y1 - 2006/05/08/ VL - 69 IS - 9/10 M3 - Article SP - 771 EP - 775 SN - 15287394 AB - The article discusses various reports published within the issue, including one by Michael Waters on predictive toxicology and another by John Richburg on the role of death receptor signaling in testicular germ-cell apoptosis triggered by mono-(2-ethylhexyl)phthalate-induced Sertoli-cell injury. KW - Toxicology KW - Prefaces & forewords N1 - Accession Number: 20617866; Rooney, Andrew A. 1; Email Address: rooney.andrew@epa.gov; Mattie, David R. 2; Email Address: david.mattie@wpafb.af.mil; Dodd, Darol E. 3; Email Address: darol.dodd@wpafb.af.mil; Affiliations: 1: Immunotoxicology Risk Assessment Session Co-Chair National Center for Environmental Assessment Office of Research and Development U.S. Environmental Protection Agency Research Triangle Park, North Carolina, USA; 2: Conference Co-chair Human Effectiveness Directorate Biosciences and Protection Division Air Force Research Laboratory Wright-Patterson AFB, Ohio, USA; 3: Alion Science and Technology Wright-Patterson AFB, Ohio, USA; Issue Info: May2006, Vol. 69 Issue 9/10, p771; Thesaurus Term: Toxicology; Subject Term: Prefaces & forewords; Number of Pages: 5p; Document Type: Article L3 - 10.1080/15287390600591330 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=20617866&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - AU - Cain, A. C.1 T1 - The battle: a new history of Waterloo. JO - Choice: Current Reviews for Academic Libraries JF - Choice: Current Reviews for Academic Libraries J1 - Choice: Current Reviews for Academic Libraries PY - 2006/05// Y1 - 2006/05// VL - 43 IS - 9 CP - 9 M3 - Book Review SP - 1668 EP - 1668 SN - 00094978 AB - Reviews the book "The Battle: A New History of Waterloo," by Alessandro Barbero and translated by John Cullen. KW - Nonfiction KW - Battle of Waterloo, Belgium, 1815 KW - Barbero, Alessandro KW - Battle: A New History of Waterloo, The (Book) N1 - Accession Number: 20829296; Authors: Cain, A. C. 1; Affiliations: 1: United States Air Force, Air University; Subject: Battle: A New History of Waterloo, The (Book); Subject: Barbero, Alessandro; Subject: Battle of Waterloo, Belgium, 1815; Subject: Nonfiction; Number of Pages: 1/6p; Record Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=20829296&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - Palmer, Kent M. T1 - Abdominal Pain Due to Acute Intermittent Porphyria. JO - Dimensions of Critical Care Nursing JF - Dimensions of Critical Care Nursing Y1 - 2006/05//May/Jun2006 VL - 25 IS - 3 M3 - Article SP - 103 EP - 109 PB - Springhouse Corporation SN - 07304625 AB - Acute intermittent porphyria is a rare autosomal dominant hereditary inborn error of metabolism of the heme biosynthetic pathway that can be exacerbated through a multitude of environmental factors. This article is a case study describing the pathophysiology, clinical presentation management, and exacerbation prevention of acute intermittent porphyria. The disease is clinically manifested with severe abdominal pain, confusion, and seizures which may be life threatening. Specific treatment with heme preparations should be instituted as soon as increased excretion of porphobilinogen through urine sampling is confirmed. Supportive treatment includes opiate analgesia, monitoring for and treating complications such as hypertension and hyponatremia. Follow-up should include family counseling regarding genetic defects and individual counseling regarding lifestyle changes including avoidance of environmental factors that have been implicated in the exacerbation of the disease. [ABSTRACT FROM AUTHOR] AB - Copyright of Dimensions of Critical Care Nursing is the property of Springhouse Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PORPHYRIA KW - ABDOMINAL pain KW - ABDOMINAL diseases KW - PAIN KW - PSYCHOTHERAPY KW - GENETICS KW - Abdominal pain KW - Acute intermittent porphyria KW - AIP KW - Emergency management KW - Symptom recognition N1 - Accession Number: 21983550; Palmer, Kent M. 1; Email Address: kentmp@hotmail.com; Source Information: May/Jun2006, Vol. 25 Issue 3, p103; Subject: PORPHYRIA; Subject: ABDOMINAL pain; Subject: ABDOMINAL diseases; Subject: PAIN; Subject: PSYCHOTHERAPY; Subject: GENETICS; Author-Supplied Keyword: Abdominal pain; Author-Supplied Keyword: Acute intermittent porphyria; Author-Supplied Keyword: AIP; Author-Supplied Keyword: Emergency management; Author-Supplied Keyword: Symptom recognition; Number of Pages: 7p; Document Type: Article; Full Text Word Count: 4145 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=21983550&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Johnson, Timothy J. AU - Manning, Raymond AU - Adams, Douglas E. AU - Sterkenburg, Ronald AU - Jata, Kumar T1 - Diagnostics of Tool-Part Interactions During Riveting on an Aluminum Aircraft Fuselage. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2006/05//May/Jun2006 Y1 - 2006/05//May/Jun2006 VL - 43 IS - 3 M3 - Article SP - 779 EP - 786 SN - 00218669 AB - Manufacturing processes including cutting, grinding, polishing, and riveting in metal structures involve dynamic processing loads, which can seriously affect material quality--for example, short transverse stresses or defect densities surrounding rivet holes. In structural health monitoring, these process loads are often not considered when designing loads and usage monitoring sensing and data interrogation systems. Riveting operations for assembling aerostructures and their effects on local material/part quality in the neighborhood of the holes are-examined herein. Physics-based nonlinear dynamic models taking into account complex double riveting impacts at the front and back of a fuselage section and the effects of operator preload are first developed to guide the experimental measurement process. Experimental shock acceleration data on the end of a rivet gun are then utilized to extract features for assessing rivet fitness in situ using vibration signals. A qualitative agreement between the analytical and experimental nonlinear resonance data surrounding 100 Hz is obtained, it is demonstrated using rivet quality assurance indicators based on spectral transmission through the tool-part interface and human operator specifications that such techniques can be utilized to identify riveting processes with skewed delivery (gun or bar), circular indentations, and bucking bar slip to assess susceptibility to future damage in fuselage structures. A simple method for normalizing loads data to take into account changes in rivet gun mass is also proposed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE fuselage manufacturing KW - AIRCRAFT riveting KW - AIRPLANES -- Design & construction KW - RIVETED joints KW - MANUFACTURING processes N1 - Accession Number: 21802401; Source Information: May/Jun2006, Vol. 43 Issue 3, p779; Subject Term: AIRPLANE fuselage manufacturing; Subject Term: AIRCRAFT riveting; Subject Term: AIRPLANES -- Design & construction; Subject Term: RIVETED joints; Subject Term: MANUFACTURING processes; Subject Term: ; Number of Pages: 8p; ; Illustrations: 2 Diagrams, 1 Chart, 8 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=21802401&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2006-09511-005 AN - 2006-09511-005 AU - Billock, Vincent A. AU - Ditzinger, Thomas AU - Kelso, J. A. Scott AU - Tsou, Brian H. T1 - Fechner-Benham subjective colors do not induce McCollough after-effects. JF - Spatial Vision JO - Spatial Vision JA - Spat Vis Y1 - 2006/05// VL - 19 IS - 2-4 SP - 161 EP - 172 CY - Netherlands PB - VSP SN - 0169-1015 SN - 1568-5683 AD - Billock, Vincent A., General Dynamics, Inc., Suite 200, 5200 Springfield Pike, Dayton, OH, US, 45431 N1 - Accession Number: 2006-09511-005. PMID: 16862838 Other Journal Title: Multisensory Research; Seeing and Perceiving. Partial author list: First Author & Affiliation: Billock, Vincent A.; General Dynamics, Inc., Dayton, OH, US. Other Publishers: Brill Academic Publishers. Release Date: 20060731. Correction Date: 20130624. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Achromatic Color; Color Perception. Minor Descriptor: Visual Perception. Classification: Visual Perception (2323). Population: Human (10). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: May, 2006. AB - Fechner-Benham subjective color is widely believed to be governed by local interactions in early (probably retinal) mechanisms. Here we report three lines of phenomenological evidence that suggest otherwise: subjective colors seen in spatially extended stimuli (a) are dependent on global aspects of the stimuli; (b) can become multistable in position; and (c) even after being stabilized do not support the creation of McCollough's colored after-effects--a cortically based phenomenon generally thought to be more central than Fechner-Benham color. These phenomena suggest a central locus that controls perception of subjective color, characterized by pattern dependent interactions among cortical mechanisms that draw their inputs from peripheral units. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Fechner-Benham subjective colors KW - color perception KW - McCollough after-effects KW - 2006 KW - Achromatic Color KW - Color Perception KW - Visual Perception KW - 2006 U1 - Sponsor: National Institute of Mental Health. Recipients: No recipient indicated U1 - Sponsor: NRC, AFOSR. Other Details: Research award. Recipients: No recipient indicated U1 - Sponsor: Deutsche Forschungsgemeinschaft, Germany. Recipients: No recipient indicated DO - 10.1163/156856806776923443 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-09511-005&site=ehost-live&scope=site UR - ORCID: 0000-0001-9880-0118 UR - UR - Vince.Billock@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-11076-021 AN - 2006-11076-021 AU - van Dongen, Hans P. A. AU - Caldwell, John A. Jr. AU - Caldwell, J. Lynn T1 - Investigating systematic individual differences in sleep-deprived performance on a high-fidelity flight simulator. JF - Behavior Research Methods JO - Behavior Research Methods JA - Behav Res Methods Y1 - 2006/05// VL - 38 IS - 2 SP - 333 EP - 343 CY - US PB - Psychonomic Society SN - 1554-351X SN - 1554-3528 AD - van Dongen, Hans P. A., Sleep and Performance Research Center, Washington State University, P. O. Box 1495, Spokane, WA, US, 99210-1495 N1 - Accession Number: 2006-11076-021. PMID: 16956110 Other Journal Title: Behavior Research Methods & Instrumentation; Behavior Research Methods, Instruments & Computers. Partial author list: First Author & Affiliation: van Dongen, Hans P. A.; Washington State University, Spokane, WA, US. Other Publishers: Springer. Release Date: 20060911. Correction Date: 20110314. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Flight Simulation; Individual Differences; Performance; Sleep Deprivation. Classification: Military Psychology (3800); Intelligent Systems (4100). Population: Human (10); Male (30). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Fitness Impairment Tester; Profile of Mood States Questionnaire; Visual Analogue Scale. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 11. Issue Publication Date: May, 2006. AB - Laboratory research has revealed considerable systematic variability in the degree to which individuals' alertness and performance are affected by sleep deprivation. However, little is known about whether or not different populations exhibit similar levels of individual variability. In the present study, we examined individual variability in performance impairment due to sleep loss in a highly select population of military jet pilots. Ten active-duty F-117 pilots were deprived of sleep for 38 h and studied repeatedly in a high-fidelity flight simulator. Data were analyzed with a mixed-model ANOVA to quantify individual variability. Statistically significant, systematic individual differences in the effects of sleep deprivation were observed, even when baseline differences were accounted for. The findings suggest that highly select populations may exhibit individual differences in vulnerability to performance impairment from sleep loss just as the general population does. Thus, the scientific and operational communities' reliance on group data as opposed to individual data may entail substantial misestimation of the impact of job-related stressors on safety and performance. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - systematic individual differences KW - sleep deprived performance KW - high fidelity flight simulator KW - 2006 KW - Flight Simulation KW - Individual Differences KW - Performance KW - Sleep Deprivation KW - 2006 U1 - Sponsor: US Army Medical Research and Materiel Command, US. Recipients: No recipient indicated U1 - Sponsor: US Air Force Office of Scientific Research, US. Recipients: No recipient indicated U1 - Sponsor: US Air Force Research Laboratory, US Air Force Office of Scientific Research, US. Grant: FA9550-05-1-0086. Recipients: No recipient indicated U1 - Sponsor: National Institutes of Health, US. Grant: Ro1-HL70154. Recipients: No recipient indicated U1 - Sponsor: Institute for Experimental Psychiatry Research Foundation. Recipients: No recipient indicated DO - 10.3758/BF03192785 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-11076-021&site=ehost-live&scope=site UR - hvd@wsu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-05663-006 AN - 2006-05663-006 AU - Kaber, David B. AU - Perry, Carlene M. AU - Segall, Noa AU - McClernon, Christopher K. AU - Prinzel, Lawrence J. III T1 - Situation awareness implications of adaptive automation for information processing in an air traffic control-related task. JF - International Journal of Industrial Ergonomics JO - International Journal of Industrial Ergonomics JA - Int J Ind Ergon Y1 - 2006/05// VL - 36 IS - 5 SP - 447 EP - 462 CY - Netherlands PB - Elsevier Science SN - 0169-8141 AD - Kaber, David B. N1 - Accession Number: 2006-05663-006. Partial author list: First Author & Affiliation: Kaber, David B.; Institute for Automation, College of Informatics and Electrical Engineering, University of Rostock, Rostock-Warnemü nde, Germany. Release Date: 20070103. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Traffic Control; Automated Information Processing; Automation; Awareness; Decision Making. Classification: Artificial Intelligence & Expert Systems (4120). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 16. Issue Publication Date: May, 2006. AB - The objective of this research was to assess the effectiveness of adaptive automation (AA) for supporting information processing (IP) in a complex, dynamic control task by defining a measure of situation awareness (SA) sensitive to differences in the forms of automation. The task was an air traffic control (ATC)-related simulation and was developed to present four different modes of automation of IP functions, including information acquisition, information analysis, decision making and action implementation automation, as well as a completely manual control mode. A total of 16 participants were recruited for a pilot study and primary experiment. The pilot assessed the sensitivity and reliability of the Situation Awareness Global Assessment Technique (SAGAT) for describing AA support of the IP functions. Half of the participants were used in the primary experiment, which refined the SA measure and described the implications of AA for IP on SA using the ATC-like simulation. Participants were exposed to all forms of automation and manual control. AA conditions matched operator workload states to dynamic control allocations in the primary task. The pilot did not reveal significant differences in SA among the various AA conditions. In the primary experiment, participant recall of aircraft was cued and relevance weights were assigned to aircraft at the time of simulation freezes. The modified measure of SA revealed operator perception and Total SA to improve when automation was applied to the information acquisition function. In both experiments, performance in the ATC-related task simulation was significantly superior when automation was applied to information acquisition and action implementation (sensory and motor processing), as compared to automation of cognitive functions, specifically information analysis. The primary experiment revealed information analysis and decision-making automation to cause higher workload, attributable to visual demands of displays. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - situation awareness KW - adaptive automation KW - information processing KW - air traffic control KW - decision making KW - 2006 KW - Air Traffic Control KW - Automated Information Processing KW - Automation KW - Awareness KW - Decision Making KW - 2006 U1 - Sponsor: NASA, Langley Research Center. Grant: NAG-1-03022. Recipients: No recipient indicated DO - 10.1016/j.ergon.2006.01.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-05663-006&site=ehost-live&scope=site UR - dbkaber@ncsu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-10712-006 AN - 2006-10712-006 AU - Patterson, Robert AU - Geri, George A. AU - Dyre, Brian P. AU - Pierce, Byron J. AU - Akhtar, Shama C. AU - Covas, Christine M. AU - Morgan, William T1 - Active heading control in simulated flight based on vertically extended contours. JF - Perception & Psychophysics JO - Perception & Psychophysics JA - Percept Psychophys Y1 - 2006/05// VL - 68 IS - 4 SP - 593 EP - 600 CY - US PB - Psychonomic Society SN - 0031-5117 SN - 1532-5962 AD - Patterson, Robert, Department of Psychology, Program in Neuroscience, Washington State University, Pullman, WA, US, 99164-4820 N1 - Accession Number: 2006-10712-006. PMID: 16933424 Other Journal Title: Attention, Perception, & Psychophysics. Partial author list: First Author & Affiliation: Patterson, Robert; Washington State University, Pullman, WA, US. Other Publishers: Springer. Release Date: 20060828. Correction Date: 20110110. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Grant Information: Patterson, Robert. Major Descriptor: Flight Simulation; Form and Shape Perception; Motion Parallax. Minor Descriptor: Texture Perception; Visual Stimulation. Classification: Visual Perception (2323). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Quantitative Study; Scientific Simulation. References Available: Y. Page Count: 8. Issue Publication Date: May, 2006. AB - In two experiments, we manipulated the properties of 3-D objects and terrain texture in order to investigate their effects on active heading control during simulated flight Simulated crosswinds were used to introduce a rotational component into the retinal flow field that presumably provided the visual cues used for heading control. An active control task was used so that the results could be generalized to real-world applications such as flight simulation. In Experiment 1, we examined the effects of three types of terrain, each of which was presented with and without 3-D objects (trees), and found that the presence of 3-D objects was more important than terrain texture for precise heading control. In Experiment 2, we investigated the effects of varying the height and density of 3-D objects and found that increasing 3-D object density improved heading control, but that 3-D object height had only a small effect. On the basis of these results, we conclude that the vertical contours improved active heading control by enhancing the motion parallax information contained in the retinal flow. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - heading control KW - flight simulation KW - vertically extended contours KW - terrain texture KW - 3-D objects KW - visual cues KW - motion parallax KW - 2006 KW - Flight Simulation KW - Form and Shape Perception KW - Motion Parallax KW - Texture Perception KW - Visual Stimulation KW - 2006 U1 - Sponsor: AFOSR. Other Details: Summer Faculty Fellowship. Recipients: Patterson, Robert DO - 10.3758/BF03208761 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-10712-006&site=ehost-live&scope=site UR - rpatter@mail.wsu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Delcomyn, Carrie A. AU - Bushway, Karen E. AU - Henley, Michael V. T1 - Inactivation of Biological Agents Using Neutral Oxone-Chloride Solutions. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2006/04/15/ VL - 40 IS - 8 M3 - Article SP - 2759 EP - 2764 SN - 0013936X AB - Bleach solutions containing the active ingredient hypochlorite (OCl-) serve as powerful biological disinfectants but are highly caustic and present a significant compatibility issue when applied to contaminated equipment or terrain. A neutral, bicarbonate-buffered aqueous solution of Oxone (2K2HSO5·KHSO4·K2SO4) and sodium chloride that rapidly generates hypochlorite and hypochlorous acid (HOCl) in situ was evaluated as a new alternative to bleach for the inactivation of biological agents. The solution produced a free chlorine (HOCl + OCl-) concentration of 3.3 g/L and achieved ≥5.8-log inactivation of spores of Bacillus atrophaeus, Bacillus thuringiensis, Aspergillus niger, and Escherichia coli vegetative cells in 1 min at 22 °C. Seawater was an effective substitute for solid sodium chloride and inactivated 5 to 8 logs of each organism in 10 min over temperatures ranging from -5 °C to 55 °C. Sporicidal effectiveness increased as free chlorine concentrations shifted from OCl- to HOCl. Neutrally buffered Oxone-chloride and Oxone-seawater solutions are mitigation alternatives for biologically contaminated equipment and environments that would otherwise be decontaminated using caustic bleach solutions. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Bleaching materials KW - Disinfection & disinfectants KW - Biological decontamination KW - Biological warfare KW - Neutralization (Chemistry) KW - Ozone-depleting substances KW - Bacillus thuringiensis KW - Hypochlorites KW - Salt N1 - Accession Number: 20790348; Delcomyn, Carrie A. 1; Email Address: carrie.delcomyn.ctr@tyndall.af.mil; Bushway, Karen E. 1; Henley, Michael V. 2; Affiliations: 1: Applied Research Associates, Inc., , 139 Barnes Drive, Tyndall AFB, Florida 32403; 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, 139 Barnes Drive, Tyndall AFB, Florida 32403; Issue Info: 4/15/2006, Vol. 40 Issue 8, p2759; Thesaurus Term: Bleaching materials; Thesaurus Term: Disinfection & disinfectants; Thesaurus Term: Biological decontamination; Thesaurus Term: Biological warfare; Thesaurus Term: Neutralization (Chemistry); Thesaurus Term: Ozone-depleting substances; Thesaurus Term: Bacillus thuringiensis; Subject Term: Hypochlorites; Subject Term: Salt; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325612 Polish and Other Sanitation Good Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 311940 Seasoning and dressing manufacturing; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; NAICS/Industry Codes: 311942 Spice and Extract Manufacturing; Number of Pages: 6p; Illustrations: 2 Charts, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=20790348&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 106452991 T1 - Letter from Iraq. Raising the flag: for the living and the dead. AU - Hagstad D Y1 - 2006/04// N1 - Accession Number: 106452991. Language: English. Entry Date: 20060609. Revision Date: 20150711. Publication Type: Journal Article; anecdote. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. NLM UID: 0372646. KW - Hospitals, Military KW - Military Medicine KW - Military Personnel KW - Postmortem Care KW - War -- Iraq KW - Female KW - Iraq KW - Male KW - Personal Property KW - United States Air Force SP - 74 EP - 74 JO - American Journal of Nursing JF - American Journal of Nursing JA - AM J NURS VL - 106 IS - 4 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 0002-936X AD - Master Sergeant, Louisiana Air National Guard, United States Air Force; david_in_balad@yahoo.com UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106452991&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - O'Connor, James V. AU - Haan, James M. AU - Wright, Joshua L. T1 - Spent Bullet in the Bronchus. JO - American Surgeon JF - American Surgeon Y1 - 2006/04// VL - 72 IS - 4 M3 - Article SP - 345 EP - 346 SN - 00031348 AB - Penetrating tracheal trauma, although infrequent, varies from minor to life-threatening injuries. Serious injury often results from airway compromise or significant associated esophageal or vascular trauma. Tracheal injuries resulting in a retained ballistic fragment in the airway have been infrequently reported. We report the successful treatment of a patient with a gunshot wound to the anterior cervical trachea resulting in a spent bullet lodged in the left lower lobe bronchus. [ABSTRACT FROM AUTHOR] AB - Copyright of American Surgeon is the property of Southeastern Surgical Congress and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GUNSHOT wounds KW - TRACHEA -- Diseases KW - WOUNDS & injuries KW - AIRWAY (Medicine) KW - BRONCHI N1 - Accession Number: 20545478; O'Connor, James V. 1; Haan, James M. 1; Wright, Joshua L. 2; Source Information: Apr2006, Vol. 72 Issue 4, p345; Subject: GUNSHOT wounds; Subject: TRACHEA -- Diseases; Subject: WOUNDS & injuries; Subject: AIRWAY (Medicine); Subject: BRONCHI; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=20545478&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Machalek, Richard AU - Katayama, Andrew D. AU - Patrey, James E. AU - Born, Dana H. T1 - Suspending Routine Duty. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 2006/04// VL - 32 IS - 3 M3 - Article SP - 389 EP - 404 SN - 0095327X AB - Sociologist Amitai Etzioni has developed a theory of the significance of holidays as "seedbeds of virtue" and agents of socialization. With minor modifications, Etzioni's theory can shed light on the sociological significance of holiday celebrations and ceremonies in military organizations. This article focuses on two key aspects of military holidays that distinguish them from their civilian counterparts: the centrality of the normative notion of "duty" in military culture and the unique temporal constraints to which military holiday celebrations are subjected. Consistent with Etzioni's claim that holidays function, in part, as agents of socialization, the authors examine holiday celebrations and ceremonies at a major organizational site of military socialization, the US Air Force Academy. The authors explain how unique properties of military organizations and cultures shape the nature and sociological functions of holiday celebrations and ceremonies in the armed forces. [ABSTRACT FROM AUTHOR] AB - Copyright of Armed Forces & Society (0095327X) is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY sociology KW - MILITARY art & science KW - HOLIDAYS -- United States KW - SOCIALIZATION KW - MANNERS & customs KW - ARMED Forces KW - HOLIDAYS KW - UNITED States KW - Air Force KW - military holidays KW - Military Policy and Organizations KW - military rituals KW - military socialization KW - UNITED States Air Force Academy KW - ETZIONI, Amitai, 1929- N1 - Accession Number: 24671787; Machalek, Richard 1; Email Address: machalek@uwyo.edu; Katayama, Andrew D. 2; Email Address: Andrew.Katayama@USAFA.af.mil; Patrey, James E. 3; Email Address: James.Patrey@navy.mil; Born, Dana H. 2; Email Address: Dana.Born@USAFA.af.mil; Affiliations: 1 : University of Wyoming; 2 : United States Air Force Academy; 3 : Naval Air Systems Command; Source Info: Apr2006, Vol. 32 Issue 3, p389; Note: Copyright© 2006 Sage Publications. All rights reserved. Reprinted by permission.; Historical Period: 2002 to 2003; Subject Term: MILITARY sociology; Subject Term: MILITARY art & science; Subject Term: HOLIDAYS -- United States; Subject Term: SOCIALIZATION; Subject Term: MANNERS & customs; Subject Term: ARMED Forces; Subject Term: HOLIDAYS; Subject: UNITED States; Author-Supplied Keyword: Air Force; Author-Supplied Keyword: military holidays; Author-Supplied Keyword: Military Policy and Organizations; Author-Supplied Keyword: military rituals; Author-Supplied Keyword: military socialization; Number of Pages: 16p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ahl&AN=24671787&site=ehost-live&scope=site DP - EBSCOhost DB - ahl ER - TY - JOUR AU - Jauchem, J. R. T1 - The role of autacoids and the autonomic nervous system in cardiovascular responses to radio-frequency energy heating. JO - Autonomic & Autacoid Pharmacology JF - Autonomic & Autacoid Pharmacology Y1 - 2006/04// VL - 26 IS - 2 M3 - Article SP - 121 EP - 140 SN - 14748665 AB - 1 Among the potential effects of exposure to high levels of radio-frequency energy (RFE) (which includes microwaves), an increase in body temperature is the primary consequence. Release of autacoids and activity of the autonomic nervous system may influence (or be directly responsible for) some of the physiological changes that occur in conjunction with this hyperthermia. 2 The main focus of this review is the interaction of autacoids and the autonomic nervous system with cardiovascular changes during heating. Differences between environmental and RFE-induced heating (such as rate of temperature change and degree of skin vs. core heating) may be important when considering these effects. 3 Antihistamines exhibited no beneficial effect on circulatory collapse during RFE-induced heating. The serotonergic blocker methysergide decreased survival time in rats during terminal RFE exposure, despite no effects on heart rate (HR) or blood pressure. Although blockade of platelet-activating factor resulted in lower HR before RFE exposure, there was a lack of effect on the subsequent increase in HR during heating. Nitric oxide did not contribute to the hypotension that occurs due to rapid heating by RFE exposure. There have been either no or very limited studies of effects of prostaglandins, bradykinin, or angiotensin on RFE-induced heating responses. 4 β-Adrenoceptor antagonism with propranolol resulted in significantly decreased survival times and lower final colonic temperatures during RFE exposure. A lack of effects of nadolol on survival time and temperature, coupled with its poor ability to traverse the blood–brain barrier, suggests that central β-adrenergic stimulation rather than peripheral stimulation may alter thermoregulation. 5 Effects of the autonomic nervous system (as studied by adrenoceptor blockade) on potassium changes during heating have not been fully investigated. Such changes could be important in animals’ responses to RFE and other modalities of heating, and should be studied in future. [ABSTRACT FROM AUTHOR] AB - Copyright of Autonomic & Autacoid Pharmacology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO frequency KW - MICROWAVES KW - BODY temperature KW - FEVER KW - ANTIHISTAMINES KW - DRUGS -- Physiological effect KW - CARDIOVASCULAR system KW - α-adrenoceptor KW - β-adrenoceptor KW - α-adrenoceptor KW - β-adrenoceptor KW - cardiovascular responses KW - heating KW - histamine KW - hyperthermia KW - microwave KW - nitric oxide KW - radio-frequency N1 - Accession Number: 20602964; Jauchem, J. R. 1; Source Information: Apr2006, Vol. 26 Issue 2, p121; Subject: RADIO frequency; Subject: MICROWAVES; Subject: BODY temperature; Subject: FEVER; Subject: ANTIHISTAMINES; Subject: DRUGS -- Physiological effect; Subject: CARDIOVASCULAR system; Author-Supplied Keyword: α-adrenoceptor; Author-Supplied Keyword: β-adrenoceptor; Author-Supplied Keyword: α-adrenoceptor; Author-Supplied Keyword: β-adrenoceptor; Author-Supplied Keyword: cardiovascular responses; Author-Supplied Keyword: heating; Author-Supplied Keyword: histamine; Author-Supplied Keyword: hyperthermia; Author-Supplied Keyword: microwave; Author-Supplied Keyword: nitric oxide; Author-Supplied Keyword: radio-frequency; Number of Pages: 20p; Illustrations: 2 Charts, 1 Graph; Document Type: Article L3 - 10.1111/j.1474-8673.2006.00362.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=20602964&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 106331206 T1 - Exposure to a First World War blistering agent. AU - Le HQ AU - Knudsen SJ Y1 - 2006/04// N1 - Accession Number: 106331206. Language: English. Entry Date: 20060908. Revision Date: 20150820. Publication Type: Journal Article; case study; pictorial. Journal Subset: Allied Health; Biomedical; Blind Peer Reviewed; Editorial Board Reviewed; Europe; Expert Peer Reviewed; Peer Reviewed; UK & Ireland. NLM UID: 100963089. KW - Blister -- Chemically Induced KW - Burns, Chemical -- Etiology KW - Chemical Warfare Agents -- Adverse Effects KW - Military Personnel KW - Mustard Compounds -- Poisoning KW - Adult KW - Blister -- Pathology KW - Burns, Chemical -- Pathology KW - Disease Progression KW - Male KW - War SP - 296 EP - 299 JO - Emergency Medicine Journal JF - Emergency Medicine Journal JA - EMERG MED J PB - BMJ Publishing Group AB - Sulfur mustards act as vesicants and alkylating agents. They have been used as chemical warfare since 1917 during the first world war. This brief report illustrates the progression of injury on a primary exposed patient to a first world war blistering agent. This case documents the rapid timeline and progression of symptoms. It emphasises the importance of appropriate personal protective equipment and immediate medical response plan with rapid decontamination and proper action from military and civilian medical treatment facilities. This case reports the first US active duty military exposure to a blistering agent in the age of global terrorism. SN - 1472-0205 AD - United States Air Force, Flight Medicine Clinic and Family Practice Clinic, 436th Medical Group, Dover AFB, DE; harrison.le@dover.af.mil U2 - PMID: 16549577. DO - 10.1136/emj.2005.032540 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106331206&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Bamford, William AU - Winternitz, Luke AU - Hay, Curtis T1 - Spacecraft Navigator. JO - GPS World JF - GPS World Y1 - 2006/04// VL - 17 IS - 4 M3 - Article SP - 50 EP - 55 PB - North Coast Media, LLC SN - 10485104 AB - The article discusses the architecture of the Navigator GPS receiver designed to function in high Earth orbit. The U.S. National Aeronautics and Space Administration designed and tested the receiver. Navigator is designed to withstand a variety of extreme environmental conditions. Navigator's GPS signal-processing hardware is implemented in radiation-hardened field programmable gate arrays. The GPS Enhanced Onboard Navigation System has been integrated into the receiver software. Navigator autonomously calculate precise orbital information at geostationary altitudes. KW - COMPUTER software KW - GPS receivers KW - GLOBAL Positioning System KW - RADIO receiving apparatus KW - PROGRAMMABLE logic devices KW - UNITED States. National Aeronautics & Space Administration N1 - Accession Number: 20440246; Bamford, William 1; Email Address: bill.bamford@emergentspace.com; Winternitz, Luke 2; Email Address: Like.B.Winternitz.t@gsfc.nasa.gov; Hay, Curtis 3; Email Address: curtis.hay@spirentfederal.com; Affiliations: 1: Emergent Space Technology, Inc., Greenbelt, Maryland; 2: NASA's Goddard Space Flight Center, Greenbelt, Maryland; 3: United States Air Force; Issue Info: Apr2006, Vol. 17 Issue 4, p50; Thesaurus Term: COMPUTER software; Subject Term: GPS receivers; Subject Term: GLOBAL Positioning System; Subject Term: RADIO receiving apparatus; Subject Term: PROGRAMMABLE logic devices ; Company/Entity: UNITED States. National Aeronautics & Space Administration; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 414210 Home entertainment equipment merchant wholesalers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334310 Audio and Video Equipment Manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=20440246&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Shouyin Zhang AU - Wurden, Glen A. AU - Intrator, Thomas P. AU - Ruden, Edward L. AU - Waganaar, William J. AU - Grabowski, Chris T. AU - Renneke, Richard M. AU - Degnan, James H. T1 - High-Density Field-Reversed Configuration Plasma for Magnetized Target Fusion. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2006/04//Apr2006 Part 1 Y1 - 2006/04//Apr2006 Part 1 VL - 34 IS - 2 M3 - Article SP - 223 EP - 228 SN - 00933813 AB - Field reversed theta pinch technology is employed with programmed cusp fields at the theta coil ends to form high-density field-reversed configuration (FRC) plasmas. The well-formed FRC plasmas have volume-averaged density of 2 – 4 × 1022 m-3, total temperature (Te + Ti) of 300–500 eV, and plasma lifetime between 10–20 μs in 50–70 mtorr of deuterium static gas fill. The achieved FRC parameters are very close to the desired target plasma requirements for magnetized target fusion. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH-density plasmas KW - DOMAIN structure KW - CONTROLLED fusion KW - PLASMA confinement KW - PARAMETER estimation KW - DEUTERIUM KW - MATTER -- Properties N1 - Accession Number: 20790093; Source Information: Apr2006 Part 1, Vol. 34 Issue 2, p223; Subject Term: HIGH-density plasmas; Subject Term: DOMAIN structure; Subject Term: CONTROLLED fusion; Subject Term: PLASMA confinement; Subject Term: PARAMETER estimation; Subject Term: DEUTERIUM; Subject Term: MATTER -- Properties; Subject Term: ; Number of Pages: 6p; ; Illustrations: 6 Black and White Photographs, 2 Diagrams; ; Document Type: Article; L3 - 10.1109/TPS.2006.872164 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=20790093&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Davidson, Sean A. AU - Gilkey, Robert H. AU - Colburn, H. Steven AU - Carney, Laurel H. T1 - Binaural detection with narrowband and wideband reproducible noise maskers. III. Monaural and diotic detection and model results. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2006/04// VL - 119 IS - 4 M3 - Article SP - 2258 EP - 2275 SN - 00014966 AB - A single-interval, yes-no, tone-in-noise detection experiment was conducted to measure the proportion of “tone present” responses to each of 25 reproducible noise-alone and tone-plus-noise waveforms under narrowband (100 Hz), wideband (2900 Hz), monotic, and diotic stimulus conditions. Proportions of “tone present” responses (estimates of the probabilities of hits and false alarms) were correlated across masker bandwidths and across monotic and diotic conditions. Two categories of models were considered; one based on stimulus energy or neural counts, and another based on temporal structure of the stimulus envelope or neural patterns. Both categories gave significant correlation between decision variables and data. A model based on a weighted combination of energy in multiple critical bands performed best, predicting up to 90% of the variance in the reproducible-noise data. However, since energy-based models are unable to successfully explain detection under a roving-level paradigm without substantial modification, it is argued that other variations of detection models must be considered for future study. Temporal models are resistant to changes in threshold under roving-level conditions, but explained at most only 67% of the variance in the reproducible-noise data. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NOISE KW - BANDWIDTHS KW - BROADBAND communication systems KW - DATA transmission systems KW - SPECTRUM allocation N1 - Accession Number: 20296268; Davidson, Sean A. 1; Gilkey, Robert H. 2,3; Colburn, H. Steven 4; Carney, Laurel H. 5; Affiliations: 1 : Department of Biomedical and Chemical Engineering, Institute for Sensory Research, 621 Skytop Road, Syracuse University, Syracuse, New York 13244; 2 : Department of Psychology, Wright State University, Dayton, Ohio, 45435; 3 : Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; 4 : Boston University Hearing Research Center, Department of Biomedical Engineering, Boston University, 44 Cummington Street, Boston, Massachusetts 02215; 5 : Department of Biomedical and Chemical Engineering, Department of Electrical Engineering and Computer Science, and The Institute for Sensory Research, 621 Skytop Road, Syracuse University, Syracuse, New York 13244; Source Info: Apr2006, Vol. 119 Issue 4, p2258; Subject Term: NOISE; Subject Term: BANDWIDTHS; Subject Term: BROADBAND communication systems; Subject Term: DATA transmission systems; Subject Term: SPECTRUM allocation; Number of Pages: 18p; Illustrations: 1 Diagram, 6 Charts, 4 Graphs; Document Type: Article L3 - 10.1121/1.2177583 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=20296268&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR AU - Brungart, Douglas S. AU - Iyer, Nandini AU - Simpson, Brian D. T1 - Monaural speech segregation using synthetic speech signals. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2006/04// VL - 119 IS - 4 M3 - Article SP - 2327 EP - 2333 SN - 00014966 AB - When listening to natural speech, listeners are fairly adept at using cues such as pitch, vocal tract length, prosody, and level differences to extract a target speech signal from an interfering speech masker. However, little is known about the cues that listeners might use to segregate synthetic speech signals that retain the intelligibility characteristics of speech but lack many of the features that listeners normally use to segregate competing talkers. In this experiment, intelligibility was measured in a diotic listening task that required the segregation of two simultaneously presented synthetic sentences. Three types of synthetic signals were created: (1) sine-wave speech (SWS); (2) modulated noise-band speech (MNB); and (3) modulated sine-band speech (MSB). The listeners performed worse for all three types of synthetic signals than they did with natural speech signals, particularly at low signal-to-noise ratio (SNR) values. Of the three synthetic signals, the results indicate that SWS signals preserve more of the voice characteristics used for speech segregation than MNB and MSB signals. These findings have implications for cochlear implant users, who rely on signals very similar to MNB speech and thus are likely to have difficulty understanding speech in cocktail-party listening environments. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPEECH KW - COCHLEAR implants KW - LANGUAGE & languages KW - HEARING KW - SPEECH perception N1 - Accession Number: 20296296; Brungart, Douglas S. 1; Iyer, Nandini 1; Email Address: nandini.iyer@wpafb.af.mil; Simpson, Brian D. 1; Affiliations: 1 : Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7901; Source Info: Apr2006, Vol. 119 Issue 4, p2327; Subject Term: SPEECH; Subject Term: COCHLEAR implants; Subject Term: LANGUAGE & languages; Subject Term: HEARING; Subject Term: SPEECH perception; Number of Pages: 7p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1121/1.2170030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=20296296&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR ID - 2006-03329-001 AN - 2006-03329-001 AU - Cycyota, Cynthia S. AU - Harrison, David A. T1 - What (Not) to Expect When Surveying Executives: A Meta-Analysis of Top Manager Response Rates and Techniques Over Time. JF - Organizational Research Methods JO - Organizational Research Methods JA - Organ Res Methods Y1 - 2006/04// VL - 9 IS - 2 SP - 133 EP - 160 CY - US PB - Sage Publications SN - 1094-4281 SN - 1552-7425 N1 - Accession Number: 2006-03329-001. Partial author list: First Author & Affiliation: Cycyota, Cynthia S.; Department of Management, United States Air Force Academy, CO, US. Release Date: 20060320. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Responses; Surveys; Top Level Managers. Classification: Research Methods & Experimental Design (2260); Management & Management Training (3640). Population: Human (10). Methodology: Meta Analysis. References Available: Y. Page Count: 28. Issue Publication Date: Apr, 2006. AB - The authors developed hypotheses about the effectiveness of response rate techniques for organizational researchers surveying executives. Using meta-analytic procedures to test those hypotheses, the authors analyzed response rate data from 231 studies that surveyed executives and appeared in top management journals from 1992 to 2003. They found mean response rates to be declining over the period, yielding an overall 32% rate. Of the various methods suggested to increase response rates in other populations, none were found to be effective for executives. However, topical salience and sponsorship by an organization or person in the executive's social networks did bring about response rate increases. The authors provide recommendations about what (not) to do when trying to collect original data from members of a firm's upper echelons. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - executives KW - response rate techniques KW - surveys KW - effectiveness KW - top managers KW - 2006 KW - Responses KW - Surveys KW - Top Level Managers KW - 2006 DO - 10.1177/1094428105280770 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-03329-001&site=ehost-live&scope=site UR - ORCID: 0000-0001-5247-3633 UR - DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-04242-007 AN - 2006-04242-007 AU - DeLeon, Patrick H. AU - Loftis, Christopher W. AU - Ball, Vicki AU - Sullivan, Michael J. T1 - Navigating politics, policy, and procedure: A firsthand perspective of advocacy on behalf of the profession. T3 - In a World of Trouble: The Role for Psychology in Public Policy JF - Professional Psychology: Research and Practice JO - Professional Psychology: Research and Practice JA - Prof Psychol Res Pr Y1 - 2006/04// VL - 37 IS - 2 SP - 146 EP - 153 CY - US PB - American Psychological Association SN - 0735-7028 SN - 1939-1323 AD - Loftis, Christopher W., 2131 K Street, NW, Washington, DC, US, 20037-1882 N1 - Accession Number: 2006-04242-007. Other Journal Title: Professional Psychology. Partial author list: First Author & Affiliation: DeLeon, Patrick H.; National Health Policy Forum, Washington, DC, US. Release Date: 20060410. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Advocacy; Government Policy Making; Psychologists; Psychology. Minor Descriptor: Politics. Classification: Professional Psychological & Health Personnel Issues (3400). Population: Human (10). Location: US. References Available: Y. Page Count: 8. Issue Publication Date: Apr, 2006. Publication History: Accepted Date: Nov 26, 2005; Revised Date: Nov 17, 2005; First Submitted Date: Aug 25, 2005. Copyright Statement: American Psychological Association. 2006. AB - Psychology's expertise as a behavioral science is essential to effectively address society's most pressing concerns. Advocacy for clients and the public good--and in turn, for the profession of psychology--occurs on multiple levels through active participation in local and federal legislatures, agencies, foundations, and nonprofit organizations that influence implementation of regulations and policies. The authors offer a number of observations and recommendations from their cumulative past experience to argue that presence, persistence, and long-term vision are absolutely essential for the ultimate success and advancement of professional psychology. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - advocacy KW - public policy KW - government KW - professional psychology KW - political process KW - psychologists KW - 2006 KW - Advocacy KW - Government Policy Making KW - Psychologists KW - Psychology KW - Politics KW - 2006 DO - 10.1037/0735-7028.37.2.146 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-04242-007&site=ehost-live&scope=site UR - cloftis@phhp.ufl.edu DP - EBSCOhost DB - psyh ER - TY - CHAP AU - Deptula, David A. T1 - Effects-Based Operations. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2006///Spring2006 Y1 - 2006///Spring2006 VL - 20 IS - 1 M3 - Book Chapter SP - 4 EP - 5 PB - Superintendent of Documents SN - 1555385X AB - A foreword to the "Effects-Based Operations" journal is presented. KW - PREFACES & forewords KW - MILITARY art & science N1 - Accession Number: 20033989; Source Information: Spring2006, Vol. 20 Issue 1, p4; Subject Term: PREFACES & forewords; Subject Term: MILITARY art & science; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Chapter; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=20033989&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Jones, Terri A. T1 - Experiencing a Joint Billet in Afghanistan. JO - Armed Forces Comptroller JF - Armed Forces Comptroller Y1 - 2006///Spring2006 VL - 51 IS - 2 M3 - Article SP - 10 EP - 10 PB - American Society of Military Comptrollers SN - 00042188 AB - The author describes her experiences in a joint billet in Afghanistan to defeat the Taliban and Al Qaeda. During the Operation Enduring Freedom to Headquarters from April to September, 2005, she served in Civil Military Operations and the Comptroller Directorate which were involved in humanitarian relief and reconstruction requirements. Her job in the joint billet introduced her to civil military affairs, humanitarian assistance and training new manager of Commander's Emergency Response Program. KW - COMPTROLLERS KW - FIRST person narrative KW - MILITARY billets KW - SPECIAL operations (Military science) KW - AFGHANISTAN KW - TALIBAN KW - QAIDA (Organization) N1 - Accession Number: 22168505; Jones, Terri A. 1; Affiliations: 1: Chief, Financial Integration Branch, Headquarters Air Combat Command, Langley Air Force Base, Virginia; Issue Info: Spring2006, Vol. 51 Issue 2, p10; Thesaurus Term: COMPTROLLERS; Subject Term: FIRST person narrative; Subject Term: MILITARY billets; Subject Term: SPECIAL operations (Military science); Subject: AFGHANISTAN ; Company/Entity: TALIBAN ; Company/Entity: QAIDA (Organization); Number of Pages: 3/4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=22168505&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Roach, William AU - Thomas, Robert AU - Buffington, Gavin AU - Polhamus, Garrett AU - Notabartolo, John AU - DiCarlo, Cheryl AU - Stockton, Kevin AU - Stolarski, David AU - Schuster, Kurt AU - Carothers, Val AU - Rockwell, Benjamin AU - Cain, Clarence T1 - SIMULTANEOUS EXPOSURE USING 532 AND 860nm LASERS FOR VISIBLE LESION THRESHOLDS IN THE RHESUS RETINA. JO - Health Physics JF - Health Physics Y1 - 2006/03// VL - 90 IS - 3 M3 - Article SP - 241 EP - 249 SN - 00179078 AB - The growth of commercially available, simultaneous multi-wavelength laser systems has increased the likelihood of possible ocular hazard. For example, many systems utilize frequency multiplying methods to produce combinations of visible, near-infrared, and ultraviolet wavelengths. Unfortunately, very little data exists to substantiate the current methods for estimating hazards from simultaneous lasing. To properly assess the retinal hazards from these wavelengths, the retinal effects of 10-s laser irradiation from 532 and 860 nm were determined in non-human primates for four different relative dosage combinations of these wavelengths. This pair of wavelengths represents the typical problem of a visible-wavelength laser combined with an in-band, infrared wavelength that is not as well focused at the retina-a situation difficult to address. To add confidence to the experimental results obtained, a theoretical thermodynamic model was developed to predict the minimal damage threshold for simultaneous wavelengths at 1 h post exposure. The new model calculations and the data obtained are compared with results from one currently accepted method of predicting relative exposure limits from multi-wavelength systems. In addition, the current ANSI-Z136-2000 standard was used to compute the combined MPEs for comparison with measured visible lesion thresholds. A total of 12 eyes were exposed using four different ratios of power levels (532/860 power rations) to determine the contribution to the damage levels from each wavelength. The experimental data were analyzed using probit analysis at both 1-h and 24-h post exposure to determine the minimum-visible-lesion (MVL) thresholds at ED50 values, and these thresholds at 24 h varied from 5.6 mW to 17 mW total intraocular power. [ABSTRACT FROM AUTHOR] AB - Copyright of Health Physics is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Radiation KW - Research KW - Retina KW - Eye KW - Lasers -- Industrial applications KW - Laboratory animals KW - Light sources KW - Optoelectronic devices KW - Analysis, statistical KW - Lasers KW - Maximum permissible exposures N1 - Accession Number: 19851924; Roach, William 1; Thomas, Robert 1; Buffington, Gavin 2; Polhamus, Garrett 1; Notabartolo, John 1; DiCarlo, Cheryl 3; Stockton, Kevin 4; Stolarski, David 4; Schuster, Kurt 4; Carothers, Val 4; Rockwell, Benjamin 1; Cain, Clarence 4; Affiliations: 1: U.S. Air Force Research Laboratory, Optical Radiation Branch, Brooks AFB, TX 78235-5278; 2: Fort Hays State University, Department of Physics, Hays, KS 67601; 3: U.S. Army Medical Research Detachment, Walter Reed Army Institute of Research, Brooks AFB, TX 78235-5278; 4: Northrup Grumman, 4241 Woodcock Drive, Suite B-100, San Antonio, TX 78228-1330; Issue Info: Mar2006, Vol. 90 Issue 3, p241; Thesaurus Term: Radiation; Thesaurus Term: Research; Subject Term: Retina; Subject Term: Eye; Subject Term: Lasers -- Industrial applications; Subject Term: Laboratory animals; Subject Term: Light sources; Subject Term: Optoelectronic devices; Author-Supplied Keyword: Analysis, statistical; Author-Supplied Keyword: Lasers; Author-Supplied Keyword: Maximum permissible exposures; NAICS/Industry Codes: 112999 All other miscellaneous animal production; NAICS/Industry Codes: 112990 All Other Animal Production; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 9p; Illustrations: 2 Diagrams, 5 Charts, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=19851924&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Tripp, Lloyd D. AU - Warm, Joel S. AU - Matthews, Gerald AU - Chiu, Peter AU - Werchan, Paul AU - Deaton, John E. T1 - +Gz acceleration loss of consciousness: time course of performance deficits with repeated experience. JO - Human Factors JF - Human Factors Y1 - 2006///Spring2006 VL - 48 IS - 1 M3 - journal article SP - 109 EP - 120 PB - Sage Publications Inc. SN - 00187208 AB - Objectives: We examine the time course of performance recovery from gravity-induced loss of consciousness (GLOC) and evaluate the utility of exposing participants to repeated bouts of GLOC in promoting recovery time.Background: A substantial number of accidents among fighter pilots have resulted from episodes of GLOC. U.S. Air Force doctrine holds that when pilots experience GLOC, impairment lasts for 24 s, in which there are 12 s of complete unconsciousness and 12 s of confusion. However, there is reason to suspect that performance efficiency associated with GLOC is degraded well before unconsciousness sets in and that more than 24 s are required for performance efficiency to return to baseline levels. Additionally, there is a belief that repeated exposure to GLOC will reduce recovery time.Method: Centrifuge simulators were used to induce GLOC in U.S. Air Force personnel with math and tracking tasks employed to emulate flight performance. Participants were tested once per week for 4 consecutive weeks.Results: On average, performance deficits appeared 7.44 s prior to the onset of unconsciousness and persisted for 55.6 s following the GLOC event. Repeated exposure failed to moderate these results.Conclusion: The temporal course of performance deficits produced by GLOC far exceeds prior estimates. The problem is more serious than previously envisioned and it is not alleviated by repeated exposure to GLOC.Application: U.S. Air Force doctrine regarding the severity of GLOC and the utility of repeated exposure to this problem needs to be revised and these data incorporated into future aircraft auto recovery systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Loss of consciousness KW - Neurologic manifestations of general diseases KW - Fighter pilots KW - Military air pilots KW - Aircraft carriers -- Aircraft launching & recovery equipment KW - Aeronautics KW - Motion KW - Military personnel KW - Task performance KW - Ohio KW - Texas N1 - Accession Number: 20787007; Tripp, Lloyd D. 1; Email Address: lloyd.tripp@wpath.af.mil; Warm, Joel S. 1; Matthews, Gerald 1; Chiu, Peter 1; Werchan, Paul 2; Deaton, John E. 3; Affiliations: 1: University of Cincinnati, Cincinnati, Ohio; 2: U. S. Air Force Research Laboratory, San Antonio, Texas; 3: CHI Systems Inc., Orlando, Florida; Issue Info: Spring2006, Vol. 48 Issue 1, p109; Subject Term: Loss of consciousness; Subject Term: Neurologic manifestations of general diseases; Subject Term: Fighter pilots; Subject Term: Military air pilots; Subject Term: Aircraft carriers -- Aircraft launching & recovery equipment; Subject Term: Aeronautics; Subject Term: Motion; Subject Term: Military personnel; Subject Term: Task performance; Subject: Ohio; Subject: Texas; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; Number of Pages: 12p; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=20787007&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Millman, Daniel R. AU - King, Paul I. AU - Maple, Raymond C. AU - Beran, Philip S. AU - Chilton, Lawrence K. T1 - Estimating the Probability of Failure of a Nonlinear Aeroelastic System. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2006/03//Mar/Apr2006 Y1 - 2006/03//Mar/Apr2006 VL - 43 IS - 2 M3 - Article SP - 504 EP - 516 SN - 00218669 AB - A limit-cycle oscillation (LCO) can be characterized by a subcritical or supercritical bifurcation, and bifurcations are shown to be discontinuities in the stochastic domain. The traditional polynomial-chaos-expansion method, which is a stochastic projection method, is too inefficient for estimating the LCO response surface because of the discontinuities associated with bifurcations. The objective of this research is to extend the stochastic projection method to include the construction of B-spline surfaces in the stochastic domain. The multivariate B-spline problem is solved to estimate the LCO response surface. A Monte Carlo simulation (MCS) is performed on this response surface to estimate the probability density function (PDF) of the LCO response. The stochastic projection method via B-splines is applied to the problem of estimating the PDF of a subcritical LCO response of a nonlinear airfoil in inviscid transonic flow. A probability of failure based upon certain failure criteria can then be computed from the estimated PDF. The stochastic algorithm provides a conservative estimate of the probability of failure of this aeroelastic system two orders of magnitude more efficiently than performing an MCS on the governing equations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OSCILLATIONS KW - BIFURCATION theory KW - MONTE Carlo method KW - ESTIMATION theory KW - AEROELASTICITY N1 - Accession Number: 20890528; Source Information: Mar/Apr2006, Vol. 43 Issue 2, p504; Subject Term: OSCILLATIONS; Subject Term: BIFURCATION theory; Subject Term: MONTE Carlo method; Subject Term: ESTIMATION theory; Subject Term: AEROELASTICITY; Subject Term: ; Number of Pages: 13p; ; Illustrations: 1 Diagram, 4 Charts, 16 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=20890528&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - DeLuca, Anthony M. AU - Reeder, Mark F. AU - Freeman, Jacob AU - Ol, Michael V. T1 - Flexible- and Rigid-Wing Micro Air Vehicle: Lift and Drag Comparison. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2006/03//Mar/Apr2006 Y1 - 2006/03//Mar/Apr2006 VL - 43 IS - 2 M3 - Article SP - 572 EP - 575 SN - 00218669 AB - Presents a study which aims to characterize how the flexibility of the wing affects performance for a specific micro air vehicle. Series of tests performed in the U.S. Air Force Institute of Technology low-speed wind tunnel; Measurements that influence the accuracy of the results including ambient pressure and ambient temperature; Correction of the effects due to blockage and upwash due to image vortices. KW - AIRPLANE wings KW - AERODYNAMICS KW - DYNAMICS KW - UNITED States. Air Force KW - WIND tunnels N1 - Accession Number: 20890537; Source Information: Mar/Apr2006, Vol. 43 Issue 2, p572; Subject Term: AIRPLANE wings; Subject Term: AERODYNAMICS; Subject Term: DYNAMICS; Subject Term: UNITED States. Air Force; Subject Term: WIND tunnels; Subject Term: ; Number of Pages: 4p; ; Illustrations: 2 Charts, 4 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=20890537&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ruggiero, Frank H. AU - Michalakes, John AU - Nehrkorn, Thomas AU - Modica, George D. AU - Zou, Xiaolei T1 - Development and Tests of a New Distributed-Memory MM5 Adjoint. JO - Journal of Atmospheric & Oceanic Technology JF - Journal of Atmospheric & Oceanic Technology Y1 - 2006/03// VL - 23 IS - 3 M3 - Article SP - 424 EP - 436 PB - American Meteorological Society SN - 07390572 AB - Updated versions of the Tangent Linear Model (TLM) and adjoint of the fifth-generation Pennsylvania State University–National Center for Atmospheric Research Mesoscale Model (MM5) have been developed and are now available to the meteorological community. The previous version of the MM5 TLM and adjoint were designed for single-processor computer architectures, based on version 1 of MM5, and were hand coded, which made it difficult to maintain up-to-date versions of the TLM and the adjoint as MM5 evolved. The new TLM and adjoint are based on version 3 of MM5 and run efficiently on multiple-processor computers. The TLM and adjoint were developed with the aid of the Tangent Linear and Adjoint Model Compiler (TAMC) automatic code generator. While some manual intervention is still necessary, the use of the automatic code generator can significantly speed code development and lower code maintenance costs. The new TLM and adjoint contain most of the physics packages and observation operators that were available in the MM5 version 1 TLM and adjoint. The new adjoint has been combined with the MM5 version 3 nonlinear model and an updated minimization module in a four-dimensional variational data assimilation analysis configuration. Accuracy of the new TLM and adjoint has been verified by individual unit and system tests as well as comparisons with the adjoint from MM5 version 1. Timing tests showed substantial decreases in time to solution when increasing the number of processors devoted to the problem. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Atmospheric & Oceanic Technology is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Atmosphere -- Research KW - Mathematical models KW - Computer systems KW - Data analysis KW - Meteorology KW - Computer simulation KW - Simulation methods & models KW - Numerical analysis KW - Code generators N1 - Accession Number: 20455946; Ruggiero, Frank H. 1; Email Address: frank.ruggiero@hanscom.af.mil; Michalakes, John 2; Nehrkorn, Thomas 3; Modica, George D. 3; Zou, Xiaolei 4; Affiliations: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts; 2: National Center for Atmospheric Research, Boulder, Colorado; 3: Atmospheric and Environmental Research, Inc., Lexington, Massachusetts; 4: Department of Meteorology, The Florida State University, Tallahassee, Florida; Issue Info: Mar2006, Vol. 23 Issue 3, p424; Thesaurus Term: Atmosphere -- Research; Thesaurus Term: Mathematical models; Thesaurus Term: Computer systems; Thesaurus Term: Data analysis; Thesaurus Term: Meteorology; Thesaurus Term: Computer simulation; Thesaurus Term: Simulation methods & models; Thesaurus Term: Numerical analysis; Subject Term: Code generators; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); NAICS/Industry Codes: 541512 Computer Systems Design Services; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=20455946&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - DENTON, MICHAEL L. AU - SCHUSTER, KURT J. AU - ROCKWELL, BENJAMIN A. T1 - Accurate measure of laser irradiance threshold for near-infrared photo-oxidation with a modified confocal microscope. JO - Journal of Microscopy JF - Journal of Microscopy Y1 - 2006/03// VL - 221 IS - 3 M3 - Article SP - 164 EP - 171 SN - 00222720 AB - Femtosecond mode-locked lasers are now being used routinely in multiphoton fluorescence and autofluorescence spectroscopy, are just beginning to be used in refractive surgery, and may be used in the future diagnosis of skin cancer. Pulses from these lasers induce non-linear effects in resultant tissue interactions. Using a modified confocal microscope with dispersion compensation and accurate measurements of beam diameter, a very low threshold was measured for photochemical oxidation in cultured cells. The measured threshold showed non-linear photo-oxidation at a peak irradiance and photon-flux density of 8.4 × 108 W cm−2 and 3.4 × 1027 photons cm−2 s−1, respectively (90-fs pulse). The impact of these findings is significant to those using ultrashort lasers because they provide a tangible reference point (microscope-independent) for the generation of photo-oxidative stress in laser-exposed tissues, and because they highlight the importance of dispersion compensation in minimizing collateral tissue damage. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microscopy is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUORESCENCE KW - SKIN -- Cancer KW - SPECTRUM analysis KW - PHOTOOXIDATIVE stress KW - PHOTOCHEMICAL oxidants KW - Confocal microscope KW - mode-locked near-infrared laser KW - photo-oxidation KW - two-photon absorption N1 - Accession Number: 20237918; DENTON, MICHAEL L. 1; Email Address: michael.denton.ctr@brooks.af.mil; SCHUSTER, KURT J. 1; ROCKWELL, BENJAMIN A. 2; Source Information: Mar2006, Vol. 221 Issue 3, p164; Subject: FLUORESCENCE; Subject: SKIN -- Cancer; Subject: SPECTRUM analysis; Subject: PHOTOOXIDATIVE stress; Subject: PHOTOCHEMICAL oxidants; Author-Supplied Keyword: Confocal microscope; Author-Supplied Keyword: mode-locked near-infrared laser; Author-Supplied Keyword: photo-oxidation; Author-Supplied Keyword: two-photon absorption; Number of Pages: 8p; Illustrations: 6 Color Photographs, 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1111/j.1365-2818.2006.01557.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=20237918&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Bolia, Robert T1 - The Utility of Force: The Art of War in the Modern World. JO - Naval War College Review JF - Naval War College Review J1 - Naval War College Review PY - 2006///Spring2006 Y1 - 2006///Spring2006 VL - 59 IS - 2 M3 - Book Review SP - 168 EP - 169 PB - Naval War College SN - 00281484 AB - The article reviews the book "The Utility of Force: The Art of War in the Modern World," by General Sir Rupert Smith. KW - UTILITY of Force: The Art of War in the Modern World, The (Book) KW - SMITH, Rupert KW - WAR KW - NONFICTION N1 - Accession Number: 21259017; Source Information: Spring2006, Vol. 59 Issue 2, p168; Subject Term: UTILITY of Force: The Art of War in the Modern World, The (Book); Subject Term: SMITH, Rupert; Subject Term: WAR; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=21259017&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2006-05769-011 AN - 2006-05769-011 AU - Tripp, Lloyd D. AU - Warm, Joel S. AU - Matthews, Gerald AU - Chiu, Peter AU - Werchan, Paul AU - Deaton, John E. T1 - Gz acceleration loss of consciousness: Time course of performance deficits with repeated experience. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2006///Spr 2006 VL - 48 IS - 1 SP - 109 EP - 120 CY - US PB - Human Factors & Ergonomics Society SN - 0018-7208 SN - 1547-8181 AD - Tripp, Lloyd D., Air Force Research Laboratory, Air Crew Protection Branch, 2215 First St., Wright-Patterson Air Force Base, OH, US, 45433 N1 - Accession Number: 2006-05769-011. PMID: 16696261 Partial author list: First Author & Affiliation: Tripp, Lloyd D.; University of Cincinnati, Cincinnati, OH, US. Other Publishers: Sage Publications. Release Date: 20060705. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Consciousness States; Gravitational Effects; Performance; Time. Minor Descriptor: Experiences (Events); Practice; Utility Theory. Classification: Military Psychology (3800); Human Factors Engineering (4010). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: Spr 2006. AB - Objectives: We examine the time course of performance recovery from gravity-induced loss of consciousness (GLOC) and evaluate the utility of exposing participants to repeated bouts of GLOC in promoting recovery time. Background: A substantial number of accidents among fighter pilots have resulted from episodes of GLOC. U.S. Air Force doctrine holds that when pilots experience GLOC, impairment lasts for 24 s, in which there are 12s of complete unconsciousness and 12 s of confusion. However, there is reason to suspect that performance efficiency associated with GLOC is degraded well before unconsciousness sets in and that more than 24 s are required for performance efficiency to return to baseline levels. Additionally, there is a belief that repeated exposure to GLOC will reduce recovery time. Method: Centrifuge simulators were used to induce GLOC in U.S. Air Force personnel with math and tracking tasks employed to emulate flight performance. Participants were tested once per week for 4 consecutive weeks. Results: On average, performance deficits appeared 7.44 s prior to the onset of unconsciousness and persisted for 55.6 s following the GLOC event. Repeated exposure failed to moderate these results. Conclusion: The temporal course of performance deficits produced by GLOC far exceeds prior estimates. The problem is more serious than previously envisioned and it is not alleviated by repeated exposure to GLOC. Application: U.S. Air Force doctrine regarding the severity of GLOC and the utility of repeated exposure to this problem needs to be revised and these data incorporated into future aircraft auto recovery systems. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - performance deficits KW - repeated experience KW - time course KW - consciousness KW - gravity KW - utility KW - recovery time KW - pilots KW - 2006 KW - Aircraft Pilots KW - Consciousness States KW - Gravitational Effects KW - Performance KW - Time KW - Experiences (Events) KW - Practice KW - Utility Theory KW - 2006 DO - 10.1518/001872006776412144 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-05769-011&site=ehost-live&scope=site UR - lloyd.tripp@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-03206-017 AN - 2006-03206-017 AU - Hirschfeld, Robert R. AU - Jordan, Mark H. AU - Feild, Hubert S. AU - Giles, William F. AU - Armenakis, Achilles A. T1 - Becoming team players: Team members' mastery of teamwork knowledge as a predictor of team task proficiency and observed teamwork effectiveness. JF - Journal of Applied Psychology JO - Journal of Applied Psychology JA - J Appl Psychol Y1 - 2006/03// VL - 91 IS - 2 SP - 467 EP - 474 CY - US PB - American Psychological Association SN - 0021-9010 SN - 1939-1854 AD - Hirschfeld, Robert R., Department of Management, Terry College of Business, University of Georgia, Athens, GA, US, 30602-6256 N1 - Accession Number: 2006-03206-017. PMID: 16551197 Partial author list: First Author & Affiliation: Hirschfeld, Robert R.; Department of Management, University of Georgia, Athens, GA, US. Release Date: 20060320. Correction Date: 20110620. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Employee Efficiency; Performance; Personnel Training; Procedural Knowledge; Work Teams. Minor Descriptor: Air Force Personnel; Military Training. Classification: Personnel Evaluation & Job Performance (3630); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 8. Issue Publication Date: Mar, 2006. Publication History: Accepted Date: Dec 22, 2004; Revised Date: Nov 16, 2004; First Submitted Date: Mar 24, 2004. Copyright Statement: American Psychological Association. 2006. AB - The authors explored the idea that teams consisting of members who, on average, demonstrate greater mastery of relevant teamwork knowledge will demonstrate greater task proficiency and observed teamwork effectiveness. In particular, the authors posited that team members' mastery of designated teamwork knowledge predicts better team task proficiency and higher observer ratings of effective teamwork, even while controlling for team task proficiency. The authors investigated these hypotheses by developing a structural model and testing it with field data from 92 teams (1,158 team members) in a United States Air Force officer development program focusing on a transportable set of teamwork competencies. The authors obtained proficiency scores on 3 different types of team tasks as well as ratings of effective teamwork from observers. The empirical model supported the authors' hypotheses. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - team training KW - team performance KW - mental model KW - multilevel KW - aggregation KW - teamwork knowledge KW - task proficiency KW - effectiveness KW - 2006 KW - Employee Efficiency KW - Performance KW - Personnel Training KW - Procedural Knowledge KW - Work Teams KW - Air Force Personnel KW - Military Training KW - 2006 DO - 10.1037/0021-9010.91.2.467 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-03206-017&site=ehost-live&scope=site UR - rhirschf@uga.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Grenier, John T1 - Army and Empire: British Soldiers on the American Frontier, 1758-1775. JO - American Historical Review JF - American Historical Review J1 - American Historical Review PY - 2006/02// Y1 - 2006/02// VL - 111 IS - 1 M3 - Book Review SP - 122 EP - 122 PB - Oxford University Press / USA SN - 00028762 AB - The article reviews the book "Army and Empire: British Soldiers on the American Frontier, 1758-1775," by Michael N. McConnell. KW - ARMY & Empire: British Soldiers on the American Frontier 1758-1775 (Book) KW - MCCONNELL, Michael N. KW - UNITED States -- Armed Forces -- History KW - NONFICTION N1 - Accession Number: 19865849; Source Information: Feb2006, Vol. 111 Issue 1, p122; Subject Term: ARMY & Empire: British Soldiers on the American Frontier 1758-1775 (Book); Subject Term: MCCONNELL, Michael N.; Subject Term: UNITED States -- Armed Forces -- History; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3/5p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19865849&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Nishino, Shirley F. AU - Spain, Jim C. T1 - Biodegradation of 3-Nitrotyrosine by Burkholderia sp. Strain JS165 and Variovorax paradoxus JS171. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2006/02// VL - 72 IS - 2 M3 - Article SP - 1040 EP - 1044 SN - 00992240 AB - The cascade of reactive nitrogen species generated from nitric oxide causes modification of proteins, lipids, and nucleic acids in a wide range of organisms. 3-Nitrotyrosine is one of the most common products of the action of reactive nitrogen species on proteins. Although a great deal is known about the formation of 3-nitrotyrosine, the subsequent metabolism of this compound is a mystery. Variovorax paradoxus JS171 and Burkholderia sp. strain JS165 were isolated from soil slurries when 3-nitrotyrosine was provided as the sole carbon, nitrogen, and energy source. During growth on 3-nitrotyrosine stoichiometric amounts of nitrite were released along with approximately one-half of the theoretically available ammonia. The catabolic pathway involving oxidative denitration is distinct from the pathway for tyrosine metabolism. The facile isolation and the specific, regulated pathway for 3-nitrotyrosine degradation in natural ecosystems suggest that there is a significant flux of 3-nitrotyrosine in such environments. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Nitrogen KW - Nitrogen compounds KW - Biodegradation KW - Nitric oxide KW - Ammonia KW - Biotic communities KW - Tyrosine KW - Proteins KW - Metabolism N1 - Accession Number: 20080101; Nishino, Shirley F. 1,2; Spain, Jim C. 1,2; Email Address: jspain@ce.gatech.edu; Affiliations: 1: Air Force Research Laboratory, Tyndall Air Force Base, Florida 32403-5323.; 2: School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0512.; Issue Info: Feb2006, Vol. 72 Issue 2, p1040; Thesaurus Term: Nitrogen; Thesaurus Term: Nitrogen compounds; Thesaurus Term: Biodegradation; Thesaurus Term: Nitric oxide; Thesaurus Term: Ammonia; Thesaurus Term: Biotic communities; Subject Term: Tyrosine; Subject Term: Proteins; Subject Term: Metabolism; NAICS/Industry Codes: 325311 Nitrogenous Fertilizer Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325612 Polish and Other Sanitation Good Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1128/AEM.72.2.1040-1044.2006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=20080101&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Mollenhauer, D. AU - Iarve, E.V. AU - Kim, R. AU - Langley, B. T1 - Examination of ply cracking in composite laminates with open holes: A moiré interferometric and numerical study JO - Composites: Part A, Applied Science & Manufacturing JF - Composites: Part A, Applied Science & Manufacturing Y1 - 2006/02// VL - 37 IS - 2 M3 - Article SP - 282 EP - 294 SN - 1359835X AB - Abstract: A moiré interferometric investigation of surface strain redistribution due to matrix cracking around open holes in two [0/45/90/-45]s composite laminates with differing ply thicknesses was conducted. Both tests revealed significant redistribution of strain as damage developed. The results from the thicker-ply specimen show strain redistribution mostly due to the cracking of the top 0° ply. This was verified by a mesh-independent displacement discontinuity modeling method based on higher order shape functions. Localized effects of sub-surface-ply cracking were not found. However, due to a thinner surface ply and more extensive damage, the thinner-ply specimen showed significant redistribution of strain as a result of the sub-surface-ply cracking as well as the 0° ply cracking. Evidence of cracking in the center −45° plies was present in the strain results. Examination of the strain redistribution and the failure surface of the thinner ply specimen led to the development of a failure scenario, where the initiation of critical 0° fiber cracking occurs slightly away from the hole edge. Future modeling efforts will attempt to verify this scenario. [Copyright &y& Elsevier] AB - Copyright of Composites: Part A, Applied Science & Manufacturing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CERAMICS KW - INTERFEROMETRY KW - FIBROUS composites KW - COMPOSITE materials KW - A. Laminates N1 - Accession Number: 19697250; Mollenhauer, D. 1; Email Address: david.mollenhauer@wpafb.af.mil; Iarve, E.V. 2; Kim, R. 2; Langley, B. 3; Affiliations: 1: US Air Force Research Laboratory, AFRL/MLBC, 2941 Hobson Way, Wright-Patterson AFB, OH 45433-7750, USA; 2: University of Dayton Research Institute, 300 College Park Avenue, Dayton, OH 45469-0168, USA; 3: Wright-State University, 3640 Colonel Glenn Hwy, Fairborn OH 45435-0001, USA; Issue Info: Feb2006, Vol. 37 Issue 2, p282; Subject Term: CERAMICS; Subject Term: INTERFEROMETRY; Subject Term: FIBROUS composites; Subject Term: COMPOSITE materials; Author-Supplied Keyword: A. Laminates; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.compositesa.2005.06.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=19697250&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Rangaswamy, M. T1 - Impact of diverse polarisations on clutter statistics. JO - IEE Proceedings -- Radar, Sonar & Navigation JF - IEE Proceedings -- Radar, Sonar & Navigation Y1 - 2006/02// VL - 153 IS - 1 M3 - Article SP - 30 EP - 34 SN - 13502395 AB - The author addresses the impact of diverse polarisations on clutter statistics in the context of waveform diversity for multi-functional operation from a specific platform as well as for multiple sensing from multiple platforms. A key issue in this context is that of clutter mitigation via the use of diverse waveforms. Classical space–time adaptive processing (STAP) methods for radar target detection can be viewed in the context of a whiten and match filter. To this end, efficient waveforms that lend themselves for such processing are sought. The author specifically considers a statistical analysis of experimental data collected at low grazing angles to validate the fact that vertical transmit–vertical receive (VV) polarised data conform to Rayleigh scatter, whereas horizontal transmit–horizontal receive data do not. Consequently, VV data are suitable for whiten and match processing adopted in conventional radar STAP. [ABSTRACT FROM AUTHOR] AB - Copyright of IEE Proceedings -- Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR targets KW - RAYLEIGH scattering KW - LIGHT -- Scattering KW - RADAR KW - ELECTRONIC systems KW - DETECTORS N1 - Accession Number: 19718653; Rangaswamy, M. 1; Email Address: muralidhar.rangaswamy@hanscom.af.mil; Affiliations: 1: Air Force Research Laboratory/SNHE, Hanscom Air Force Base, MA, USA; Issue Info: Feb2006, Vol. 153 Issue 1, p30; Subject Term: RADAR targets; Subject Term: RAYLEIGH scattering; Subject Term: LIGHT -- Scattering; Subject Term: RADAR; Subject Term: ELECTRONIC systems; Subject Term: DETECTORS; Number of Pages: 5p; Illustrations: 3 Charts, 8 Graphs; Document Type: Article L3 - 10.1049/ip-rsn:20050051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=19718653&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Anagnostou, Dimitrios E. AU - Guizhen Zheng AU - Chryssomallis, Michael T. AU - Lyke, James C. AU - Ponchak, George E. AU - Papapolymerou, John AU - Christodoulou, Christos G. T1 - Design, fabrication, and measurements of an RF-MEMS-based self-similar reconfigurable antenna. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2006/02//Feb2006 Part 1 Y1 - 2006/02//Feb2006 Part 1 VL - 54 IS - 2 M3 - Article SP - 422 EP - 432 SN - 0018926X AB - Reconfigurability in an antenna system is a desired characteristic that has been the focus of much research in recent years. In this work, ohmic contact cantilever RF-MEMS switches are integrated with self-similar planar antennas to provide a reconfigurable antenna system that radiates similar patterns over a wide range of frequencies. The different issues encountered during the integration of the MEMS switches and the overall system design procedure are described herein. The final model radiates at three widely separated frequencies with very similar radiation patterns. The proposed concept can be extended to reconfigurable linear antenna arrays or to more complex antenna structures with large improvements in antenna performance. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNAS (Electronics) KW - MICROELECTROMECHANICAL systems KW - ANTENNA radiation patterns KW - SILICON KW - RADIO frequency N1 - Accession Number: 52037836; Source Information: Feb2006 Part 1, Vol. 54 Issue 2, p422; Subject Term: ANTENNAS (Electronics); Subject Term: MICROELECTROMECHANICAL systems; Subject Term: ANTENNA radiation patterns; Subject Term: SILICON; Subject Term: RADIO frequency; Subject Term: ; Number of Pages: 11p; ; Illustrations: 8 Diagrams, 8 Graphs; ; Document Type: Article; L3 - 10.1109/TAP.2005.863399 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=52037836&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Statom, T. K. T1 - Pulsed CsI-Coated Tufted Carbon Fiber Cathode Plasma. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices J1 - IEEE Transactions on Electron Devices PY - 2006/02// Y1 - 2006/02// VL - 53 IS - 2 M3 - Article SP - 386 EP - 391 SN - 00189383 AB - This paper discusses the out-gassing behavior of a repetitively pulsed electron beam diode with a CsI-coated tufted carbon fiber cathode and a carbon fiber anode. Through this paper, a cross section model was developed that utilizes experimental data including pressure, temperature and voltage (energy) for determination. Mass and optical spectroscopy identified neutral and ion species likely responsible for the pressure pulses. The identified neutral and ionization cross sections from the published literature and databases were compared with the experimentally determined cross sections. The types of cross sections were electron-neutral and was single impact leading to single, double and triple ionization as well as elastic scattering. This comparison leads to the conclusion that initial pressure bursts consist of plasma with constituents of Cs, Cs++, Cs+++, I, I++, N2, N2+, H2O+, H, H+, and H2+. Larger pressure bursts after the initial ones also include Cs+ and I+. Smaller bursts observed during steady state operations fluctuate between plasmas that contain H and H+, and those that contain H, H+, and H2+. Consistently, the initial pressure pulses exceeded those found under steady-state operations. The optical spectroscopy timing and results are self-consistent with what is obtained from the cross section model. The cross section model coupled with the experimental data determines the transient plasma makeup responsible for the observed pressure pulses. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON fibers KW - ELECTRON beams KW - DIODES KW - ELECTRONICS KW - MASS spectrometry KW - PLASMA (Ionized gases) N1 - Accession Number: 19935665; Source Information: Feb2006, Vol. 53 Issue 2, p386; Subject Term: CARBON fibers; Subject Term: ELECTRON beams; Subject Term: DIODES; Subject Term: ELECTRONICS; Subject Term: MASS spectrometry; Subject Term: PLASMA (Ionized gases); Subject Term: ; Number of Pages: 6p; ; Document Type: Article; L3 - 10.1109/TED.2005.862701 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19935665&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kleismit, Richard A. AU - Kazimierczuk, Marian K. AU - Kozlowski, Gregory T1 - Sensitivity and Resolution of Evanescent Microwave Microscope. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques J1 - IEEE Transactions on Microwave Theory & Techniques PY - 2006/02//Feb2006 Part 1 Y1 - 2006/02//Feb2006 Part 1 VL - 54 IS - 2 M3 - Article SP - 639 EP - 647 SN - 00189480 AB - A near-field evanescent microwave microscope is based on a λ/4 coaxial TEM transmission-line resonator with a silver-plated tungsten tip extending through an end-wall aperture. This microwave microscope is used to characterize local electromagnetic properties of dielectrics, conductors, and super-conductors. The resolution of the probe is verified experimentally by scanning etched gold lines on a sapphire substrate. A first-order sensitivity estimation generated from a unified equivalent circuit model of the probe and sample is investigated. The sensitivity inherent to the resonant probe and system noise is discussed. Experimental validation of sensitivity is given. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVE transmission lines KW - RESONATORS KW - SENSITIVITY theory (Mathematics) KW - MICROWAVE antennas KW - ELECTROMAGNETIC fields KW - ELECTRIC apparatus & appliances KW - MICROWAVE devices N1 - Accession Number: 20098477; Source Information: Feb2006 Part 1, Vol. 54 Issue 2, p639; Subject Term: MICROWAVE transmission lines; Subject Term: RESONATORS; Subject Term: SENSITIVITY theory (Mathematics); Subject Term: MICROWAVE antennas; Subject Term: ELECTROMAGNETIC fields; Subject Term: ELECTRIC apparatus & appliances; Subject Term: MICROWAVE devices; Subject Term: ; Number of Pages: 9p; ; Illustrations: 4 Black and White Photographs, 5 Diagrams, 2 Charts, 4 Graphs; ; Document Type: Article; L3 - 10.1109/TMTT.2005.862668 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=20098477&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - AU - Knapp, Kenneth J.1 AU - Marshall, Thomas E.2 AU - Rainer, R. Kelly2 AU - Ford, F. Nelson2 T1 - Information security: management's effect on culture and policy. JO - Information Management & Computer Security JF - Information Management & Computer Security J1 - Information Management & Computer Security PY - 2006/02// Y1 - 2006/02// VL - 14 IS - 1 CP - 1 M3 - Article SP - 24 EP - 36 SN - 09685227 AB - The article presents a study using a theoretical model that demonstrates the influence of top management support on an organization's security culture and level of security enforcement. The study aims to understand the role of top management support, policy enforcement, and organizational culture in achieving effectiveness in information security. Methodology of the study is presented as well as the data collection and analysis which are viewed on charts and graphs. Researchers' recommendation and conclusion reveals the significant relationship between management issues and information security. KW - Information resources management KW - Knowledge management KW - Electronic information resources -- Access control KW - Data protection KW - Electronic information resource searching KW - Computer security KW - Organizational behavior KW - Corporate culture KW - Industrial management KW - Information control KW - Management effectiveness KW - Organizational culture KW - Surveys N1 - Accession Number: 20512829; Authors: Knapp, Kenneth J. 1; Marshall, Thomas E. 2; Rainer, R. Kelly 2; Ford, F. Nelson 2; Affiliations: 1: US Air Force Academy,Colorado Springs, Colorado, USA; 2: Department of Management, College of Business, Auburn University, Auburn, Alabama, USA; Subject: Information resources management; Subject: Knowledge management; Subject: Organizational behavior; Subject: Corporate culture; Subject: Electronic information resources -- Access control; Subject: Industrial management; Subject: Data protection; Subject: Electronic information resource searching; Subject: Computer security; Author-Supplied Keyword: Information control; Author-Supplied Keyword: Management effectiveness; Author-Supplied Keyword: Organizational culture; Author-Supplied Keyword: Surveys; Number of Pages: 13p; Illustrations: 9 Charts; Record Type: Article; Full Text Word Count: 2974 L3 - 10.1108/09685220610648355 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=20512829&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR T1 - EFFECTS OF PHYSICAL CONDITIONING ON INTERCOLLEGIATE GOLFER PERFORMANCE. AU - Doan, Brandon K. AU - Newton, Robert U. AU - Young-Hoo Kwon AU - Kraemer, William J. JO - Journal of Strength & Conditioning Research (Allen Press Publishing Services Inc.) JF - Journal of Strength & Conditioning Research (Allen Press Publishing Services Inc.) Y1 - 2006/02// VL - 20 IS - 1 SP - 62 EP - 72 SN - 10648011 N1 - Accession Number: 20195088; Author: Doan, Brandon K.: 1 email: Brandon.Doan@usafa.af.mil. Author: Newton, Robert U.: 2 Author: Young-Hoo Kwon: 3 Author: Kraemer, William J.: 4 ; Author Affiliation: 1 Human Performance Laboratory, HQ USAFA/AHML, US. Air Force Academy, Colorado 80840: 2 School of Biomedical and Sports Science, Edith Cowan University, Joondalup, Western Australia: 3 The Biomechanics Laboratory, Texas Women's University, Denton, Texas 76204: 4 Human Performance Laboratory, Department of Kinesiology, University of Connecticut, Storrs, Connecticut 06269; No. of Pages: 11; Language: English; Publication Type: Article; Update Code: 20060321 N2 - This investigation was conducted to determine the effects of a physical conditioning program on clubhead speed, consistency, and putting distance control in 10 men and 6 women National Collegiate Athletic Association Division I golfers. Supervised strength, power, and flexibility training was performed 3 times per week for 11 weeks. Performance tests were conducted before and after the training period. Significant (p < 0.05) increases were noted for all strength, power, and flexibility tests from pre- to posttraining of between 7.3 and 19.9%. Clubhead speed in- creased significantly (1.6%), equating to approximately a 4.9-m increase in driving distance. Putting distance control significantly improved for the men-only group (29.6%), whereas there was no significant difference in putting distance control for the total and women-only groups. Eleven weeks of golf-specific physical conditioning increased clubhead speed without a negative effect on consistency or putting distance control in intercollegiate men and women golfers. ABSTRACT FROM AUTHOR KW - *GOLFERS KW - *ATHLETES KW - *GOLF techniques KW - *GOLF -- Training KW - *COLLEGE sports KW - *PHYSIOLOGY KW - *MUSCLE strength KW - *PHYSICAL fitness KW - ASSOCIATIONS, institutions, etc. KW - clubhead speed KW - exercise KW - sport-specific conditioning UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=20195088&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 106459969 T1 - Effects of physical conditioning on intercollegiate golfer performance. AU - Doan BK AU - Newton RU AU - Kwon Y AU - Kraemer WJ Y1 - 2006/02// N1 - Accession Number: 106459969. Language: English. Entry Date: 20060623. Revision Date: 20150711. Publication Type: Journal Article; pictorial; research; tables/charts. Journal Subset: Allied Health; Biomedical; Double Blind Peer Reviewed; Peer Reviewed; USA. NLM UID: 9415084. KW - Athletic Training -- Methods KW - Sport Specific Training KW - Golf KW - Physical Performance KW - Athletes, College KW - Training Effect (Physiology) KW - Exercise Physiology KW - Sports Organizations KW - Male KW - Female KW - Pliability KW - Muscle Strengthening KW - Exercise Intensity KW - Pretest-Posttest Design KW - Statistical Significance KW - Exercise Test, Muscular KW - Exercise Test KW - Sex Factors KW - Body Weights and Measures KW - Adult KW - Descriptive Statistics KW - Prospective Studies KW - Neuromuscular Control -- Evaluation KW - Dynamometry KW - Grip Strength -- Evaluation KW - Rotation -- Evaluation KW - Torso KW - Videorecording KW - Motion Analysis Systems KW - Two-Way Analysis of Variance KW - Repeated Measures KW - Pearson's Correlation Coefficient KW - Power Analysis KW - Human SP - 62 EP - 72 JO - Journal of Strength & Conditioning Research (Allen Press Publishing Services Inc.) JF - Journal of Strength & Conditioning Research (Allen Press Publishing Services Inc.) JA - J STRENGTH CONDITION RES VL - 20 IS - 1 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. AB - Doan, B.K., R.U. Newton, YH. Kwon, and W.J. Kraemer. Effects of physical conditioning on intercollegiate golfer performance. J. Strength Cond. Res. 20(1):62-72. 2006.- This investigation was conducted to determine the effects of a physical conditioning program on clubhead speed, consistency, and putting distance control in 10 men and 6 women National Collegiate Athletic Association Division I golfers. Supervised strength, power, and flexibility training was performed 3 times per week for 11 weeks. Performance tests were conducted before and after the training period. Significant (p < 0.05) increases were noted for all strength, power, and flexibility tests from pre- to posttraining of between 7.3 and 19.9%. Clubhead speed increased significantly (1.6%), equating to approximately a 4.9-m increase in driving distance. Putting distance control significantly improved for the men-only group (29.6%), whereas there was no significant difference in putting distance control for the total and women-only groups. Eleven weeks of golf-specific physical conditioning increased clubhead speed without a negative effect on consistency or putting distance control in intercollegiate men and women golfers. SN - 1064-8011 AD - The Human Performance Laboratory, HQ USAFA/AHML, US Air Force Academy, Colorado 80840; Brandon.Doan@usafa.af.mil U2 - PMID: 16503694. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106459969&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Hansen, Thorkild B. T1 - Probe-corrected near-field measurements on a truncated cylinder. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2006/02// VL - 119 IS - 2 M3 - Article SP - 792 EP - 807 SN - 00014966 AB - A probe-corrected theory is presented for computing the acoustic far fields of transducers and scatterers from measurements of near fields on a cylindrical surface. The near-field data is truncated at the top, bottom, and angular edges of the scan cylinder. These truncation edges can cause inaccuracies in the computed far fields. Correction techniques are developed for the top and bottom truncation edges. The cylindrical wave expansions automatically apply an angular taper to the near-field data that reduces the effect of the angular truncation edges. The taper function depends on the probe and the angular sample spacing. The theory is validated through numerical examples involving a point source and a baffled piston transducer probe. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEAR-fields KW - ACOUSTICAL engineering KW - WAVES (Physics) KW - ANGULAR momentum (Mechanics) KW - TRANSDUCERS N1 - Accession Number: 20263779; Hansen, Thorkild B. 1; Email Address: Thorkild.Hansen@att.net; Affiliations: 1 : Consultant, Air Force Research Laboratory (SNHE), Hanscom AFB, Massachusetts 01731; Source Info: Feb2006, Vol. 119 Issue 2, p792; Subject Term: NEAR-fields; Subject Term: ACOUSTICAL engineering; Subject Term: WAVES (Physics); Subject Term: ANGULAR momentum (Mechanics); Subject Term: TRANSDUCERS; Number of Pages: 16p; Illustrations: 3 Diagrams, 1 Chart, 10 Graphs; Document Type: Article L3 - 10.1121/1.2151789 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=20263779&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR ID - 106421706 T1 - College coaches corner. Learning from each other: warming up. AU - Hedrick A AU - Wiley S AU - Bennett S AU - Rodgers R Y1 - 2006/02// N1 - Accession Number: 106421706. Language: English. Entry Date: 20060407. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletes, College KW - Warm-Up Exercise KW - Athletic Training -- Methods KW - Exercise Physiology SP - 43 EP - 45 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 28 IS - 1 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. AB - We are all familiar with the importance of warming up prior to physical activity. However, there are probably as many warm-up protocols as there are strength and conditioning coaches, with varying levels of effectiveness. We turned to our panel of experts to discover how they handle the pre-activity warm up process. SN - 1524-1602 AD - US Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106421706&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Learning From Each Other: Warming Up. AU - Hedrick, Allen JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) Y1 - 2006/02// VL - 28 IS - 1 SP - 43 EP - 45 SN - 15241602 N1 - Accession Number: 19720959; Author: Hedrick, Allen: 1 email: ARHedrick@Adelphia.net. ; Author Affiliation: 1 United States Air Force Academy, Colorado Springs, Colorado; No. of Pages: 3; Language: English; Publication Type: Article; Update Code: 20060217 N2 - We are all familiar with the importance of warming up prior to physical activity. However, there are probably as many warm-up protocols as there are strength and conditioning coaches, with varying levels of effectiveness. We turned to our panel of experts to discover how they handle the pre-activity warm up process. ABSTRACT FROM AUTHOR KW - *EXERCISE KW - *PHYSICAL fitness KW - *COACHES (Athletics) KW - *HEALTH KW - *ATHLETICS UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=19720959&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 2006-04602-003 AN - 2006-04602-003 AU - Mastroianni, George R. T1 - Kurt Gottschaldt's ambiguous relationship with national socialism. JF - History of Psychology JO - History of Psychology JA - Hist Psychol Y1 - 2006/02// VL - 9 IS - 1 SP - 38 EP - 54 CY - US PB - Educational Publishing Foundation SN - 1093-4510 SN - 1939-0610 AD - Mastroianni, George R., HQ USAFA/DFBL, 2354 Fairchild Drive, Suite 5L52, USAFA, CO, US, 80840 N1 - Accession Number: 2006-04602-003. PMID: 17152235 Partial author list: First Author & Affiliation: Mastroianni, George R.; Department of Behavioral Sciences and Leadership, United States Air Force Academy, CO, US. Release Date: 20060417. Correction Date: 20160912. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Environment; Experimentation; Genetics; History of Psychology; Twins. Minor Descriptor: Fascism; Socialism. Classification: History & Systems (2140). Population: Human (10); Male (30). Location: Germany. References Available: Y. Page Count: 17. Issue Publication Date: Feb, 2006. Publication History: Accepted Date: May 31, 2005; Revised Date: Mar 30, 2005; First Submitted Date: Nov 27, 2004. Copyright Statement: American Psychological Association. 2006. AB - Kurt Gottschaldt (1902-1991) was active in psychological research in Germany throughout much of the past century. His best-known contributions relate to three 'twin camps' he ran in the late 1930s. These twin camps were designed help assess the relative contributions of heredity and environment in determining the development of psychological attributes and behavior. Gottschaldt's conclusions favored a hereditarian interpretation of his results, and Gottschaldt promoted the relevance of his twin research to 'race psychology.' Although Gottschaldt is sometimes described as a defender of scientific objectivity who maintained independence from Nazi ideology during the National Socialist era, some of his work suggests that a modest revision of this view may be required. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - twin camps KW - race psychology KW - psychological attributes KW - psychological research KW - heredity KW - environment KW - Kurt Gottschaldt KW - National Socialist era KW - Nazi ideology KW - 2006 KW - Environment KW - Experimentation KW - Genetics KW - History of Psychology KW - Twins KW - Fascism KW - Socialism KW - 2006 DO - 10.1037/1093-4510.9.1.38 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-04602-003&site=ehost-live&scope=site UR - george.mastroianni@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Johnson, Glenn R. AU - Spain, Jim C. T1 - Synthesis of substituted catechols using nitroarene dioxygenases JO - Enzyme & Microbial Technology JF - Enzyme & Microbial Technology Y1 - 2006/01/03/ VL - 38 IS - 1/2 M3 - Article SP - 142 EP - 147 SN - 01410229 AB - Abstract: The nitroarene dioxygenases are in the class of Rieske iron-containing oxygenases that incorporate atmospheric oxygen into substrates via electrophilic attack on the substrate. In their native role, the nitroarene dioxygenases start degradative pathways by hydroxylating nitro-substituted, and adjacent unsubstituted carbons of nitroaromatic compounds. The reaction yields the corresponding nitro-cis-cyclohexadienediol, which is unstable and spontaneously re-aromatizes to form a catechol and nitrite. In bacterial metabolism, the specificity of the hydroxylation determines subsequent steps in degradation pathways. Experiments were done to find whether the specificity could be exploited to direct the hydroxylation of multiply substituted aromatic substrates and thereby produce novel catechols. Recombinant strains carrying genes for nitroarene dioxygenases were used for transformation of various substituted nitroaromatic compounds. The reactions were analyzed using HPLC to track substrate consumption and product formation, then GC–MS and NMR to identify the reaction products. A number of substituted catechols were obtained using the recombinant biocatalysts. The nitro-substituted carbon was the primary site for dioxygenase hydroxylation. When substrates included nitro and halogen substituents, the halogen-substituted positions were also targeted, but less frequently than the nitro-substituted site. The production of catechols was limited in batch fermentations, likely due to toxicity of the quinones that result from air oxidation of catechols. The nitroarene dioxygenases will serve as catalysts for direct synthesis of highly substituted catechols, however, the reaction conditions must be engineered to overcome product toxicity and allow sustained accumulation of catecholic products. [Copyright &y& Elsevier] AB - Copyright of Enzyme & Microbial Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Polyphenols KW - Hydroxylation KW - Biochemistry KW - Leavening agents KW - Biocatalysis KW - Catechol KW - Dioxygenase KW - Whole-cell biotransformations N1 - Accession Number: 19060132; Johnson, Glenn R. 1; Email Address: glenn.johnson@tyndall.af.mil; Spain, Jim C. 2; Affiliations: 1: Air Force Research Laboratory, MLQL, 139 Barnes Drive Suite 2, Tyndall AFB, FL 32403, USA; 2: Environmental Engineering Program, School of Civil and Environmental Engineering, 311 Ferst Dr., Georgia Institute of Technology, GA 30332-0512, Atlanta; Issue Info: Jan2006, Vol. 38 Issue 1/2, p142; Thesaurus Term: Polyphenols; Subject Term: Hydroxylation; Subject Term: Biochemistry; Subject Term: Leavening agents; Author-Supplied Keyword: Biocatalysis; Author-Supplied Keyword: Catechol; Author-Supplied Keyword: Dioxygenase; Author-Supplied Keyword: Whole-cell biotransformations; NAICS/Industry Codes: 311990 All other food manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.enzmictec.2005.05.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=19060132&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Roberts, Michael AU - England, Ellen AU - Bleckmann, Charles T1 - Cyclohexane Removal in a Dual-Tube Membrane Bioreactor. JO - Bioremediation Journal JF - Bioremediation Journal Y1 - 2006/01//Jan-Jun2006 VL - 10 IS - 1/2 M3 - Article SP - 5 EP - 11 PB - Taylor & Francis Ltd SN - 10889868 AB - A dual-tube dense-phase silicone rubber membrane bioreactor was investigated for control of cyclohexane-contaminated air as part of a jet propulsion (JP-8) fuel remediation investigation strategy. The reactor was seeded with a mixed bacterial consortium isolated from the water/fuel interface of a JP-8 jet fuel sample and activated sludge, capable of aromatic and cyclic compound biodegradation. Cyclohexane removal ranged from 1.1 to 28.6 mg L -1 , with removal percentages ranging from 4.6% to 37.6%. Removal in the bioreactor ranged from 29.4 to 596.6 mg min -1 m -2 and measured elimination capacities ranged from 46.7 to 947.9 g m -3 h -1 . Removal rates and elimination capacity increased with increasing biofilm growth and with increasing loading rates of cyclohexane. Loading rates ranged from 395.9 to 2189.5 mg min -1 m -2 . Results of this study showed effective removal of cyclohexane using the membrane bioreactor, suggesting that this technology may have applicability for treating vapors contaminated with cyclic hydrocarbons. [ABSTRACT FROM AUTHOR] AB - Copyright of Bioremediation Journal is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Bioreactors KW - Cyclohexane KW - Biodegradation KW - Biofilms KW - Silicones KW - Jet propulsion KW - air KW - biofilter KW - biofiltration KW - bioreactor KW - cyclohexane KW - HFMM KW - hollow fiber KW - hollow fiber membrane module KW - membrane KW - membrane module KW - model KW - silicone N1 - Accession Number: 22089103; Roberts, Michael 1; England, Ellen 2; Email Address: ellen.england@afit.edu; Bleckmann, Charles 2; Affiliations: 1: United States Air Force School of Aerospace Medicine, Brooks Air Force Base, Texas, USA; 2: Department of Systems and Engineering Management, Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio, USA; Issue Info: Jan-Jun2006, Vol. 10 Issue 1/2, p5; Thesaurus Term: Bioreactors; Thesaurus Term: Cyclohexane; Thesaurus Term: Biodegradation; Thesaurus Term: Biofilms; Subject Term: Silicones; Subject Term: Jet propulsion; Author-Supplied Keyword: air; Author-Supplied Keyword: biofilter; Author-Supplied Keyword: biofiltration; Author-Supplied Keyword: bioreactor; Author-Supplied Keyword: cyclohexane; Author-Supplied Keyword: HFMM; Author-Supplied Keyword: hollow fiber; Author-Supplied Keyword: hollow fiber membrane module; Author-Supplied Keyword: membrane; Author-Supplied Keyword: membrane module; Author-Supplied Keyword: model; Author-Supplied Keyword: silicone; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 7p; Illustrations: 3 Diagrams, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1080/10889860600734422 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=22089103&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Oschwald, M. AU - Smith, J. J. AU - Branam, R. AU - Hussong, J. AU - Schik, A. AU - Chehroudi, B. AU - Talley, D. T1 - INJECTION OF FLUIDS INTO SUPERCRITICAL ENVIRONMENTS. JO - Combustion Science & Technology JF - Combustion Science & Technology Y1 - 2006/01//Jan-Mar2006 VL - 178 IS - 1-3 M3 - Article SP - 49 EP - 100 SN - 00102202 AB - This paper summarizes and compares the results of systematic research programs at two independent laboratories regarding the injection of cryogenic liquids at subcritical and supercritical pressures, with application to liquid rocket engines. Both single jets and coaxial jets have been studied. Cold flow studies provided valuable information without introducing the complexities of combustion. Initial studies utilized a single jet of cryogenic nitrogen injected into a quiescent room temperature nitrogen environment with pressures below and above the thermodynamic critical pressure of the nitrogen. Later, the work was extended to investigate the effects of a co-flowing gas. Parallel to this work, combustion studies with cryogenic propellants were introduced to understand high pressure coaxial injection phenomena with the influence of chemical reaction. Shadowgraphy and spontaneous Raman scattering were used to measure quantities such as growth rates, core lengths, turbulent length scales, fractal dimensions, and jet breakup regimes. It is found that jets injected at supercritical pressures do not atomize as they do at subcritical pressures. Rather, they behave in many respects like variable density turbulent gas jets. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Liquids KW - Nitrogen KW - Low temperature engineering KW - Rocket engines KW - Raman effect KW - Turbulence KW - propellant injection KW - sprays KW - supercritical pressure N1 - Accession Number: 19183611; Oschwald, M. 1; Smith, J. J. 1; Branam, R. 1; Hussong, J. 1; Schik, A. 1; Chehroudi, B. 2; Talley, D. 3; Affiliations: 1: German Aerospace Center (DLR), Institute of Space Propulsion, Lampoldshausen, Germany; 2: Engineering Research Consultants, Lancaster, Pennsylvania, USA; 3: U.S. Air Force Research Laboratory (AFRL), Propulsion Directorate, Edwards Air Force Base, California, USA; Issue Info: Jan-Mar2006, Vol. 178 Issue 1-3, p49; Thesaurus Term: Liquids; Thesaurus Term: Nitrogen; Subject Term: Low temperature engineering; Subject Term: Rocket engines; Subject Term: Raman effect; Subject Term: Turbulence; Author-Supplied Keyword: propellant injection; Author-Supplied Keyword: sprays; Author-Supplied Keyword: supercritical pressure; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 52p; Illustrations: 8 Black and White Photographs, 1 Diagram, 4 Charts, 23 Graphs; Document Type: Article L3 - 10.1080/00102200500292464 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=19183611&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Lin, K.-C. AU - Cox-Stouffer, S. K. AU - Jackson, T. A. T1 - STRUCTURES AND PHASE TRANSITION PROCESSES OF SUPERCRITICAL METHANE/ETHYLENE MIXTURES INJECTED INTO A SUBCRITICAL ENVIRONMENT. JO - Combustion Science & Technology JF - Combustion Science & Technology Y1 - 2006/01//Jan-Mar2006 VL - 178 IS - 1-3 M3 - Article SP - 129 EP - 160 SN - 00102202 AB - The structure and phase transition of supercritical methane/ethylene mixtures injected into quiescent subcritical nitrogen were investigated in this study. Visualization of the near-field jets and flow structure inside the injector, as well as measurement of shock/jet structures, were performed using shadowgraph images. It was found that supercritical methane/ethylene jets injected away from the critical point undergo ideal–gas-like expansion and exhibit visible internal shock structures. Opaque jets with condensation occurring at the injection plane or even inside the injector were observed when the supercritical mixture was injected near the critical point. The pressure profile along the injector axis for the condensed jet indicates that a pressure rise inside the injector comes from the release of latent heat during homogeneous nucleation processes and is the primary factor in the production of a large jet expansion angle in the condensed jet. The fluid along streamlines passing through the Mach disk is less likely to condense, due to the short residence time within the nongaseous region and substantial increases in pressure and temperature downstream of the Mach disk. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Methane KW - Ethylene KW - Nitrogen KW - Supercritical fluids KW - Near-fields KW - Scramjet engines KW - Nucleation KW - homogeneous nucleation KW - scramjet KW - supercritical N1 - Accession Number: 19183618; Lin, K.-C. 1; Email Address: kuo-cheng.lin@wpafb.af.mil; Cox-Stouffer, S. K. 1; Jackson, T. A. 2; Affiliations: 1: Taitech Inc., Beavercreek, Ohio, USA; 2: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, Ohio, USA; Issue Info: Jan-Mar2006, Vol. 178 Issue 1-3, p129; Thesaurus Term: Methane; Thesaurus Term: Ethylene; Thesaurus Term: Nitrogen; Subject Term: Supercritical fluids; Subject Term: Near-fields; Subject Term: Scramjet engines; Subject Term: Nucleation; Author-Supplied Keyword: homogeneous nucleation; Author-Supplied Keyword: scramjet; Author-Supplied Keyword: supercritical; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 32p; Illustrations: 4 Black and White Photographs, 3 Diagrams, 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1080/00102200500290716 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=19183618&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Edwards, Tim T1 - CRACKING AND DEPOSITION BEHAVIOR OF SUPERCRITICAL HYDROCARBON AVIATION FUELS. JO - Combustion Science & Technology JF - Combustion Science & Technology Y1 - 2006/01//Jan-Mar2006 VL - 178 IS - 1-3 M3 - Article SP - 307 EP - 334 SN - 00102202 AB - Trends in increasing aircraft speeds and engine efficiencies are increasing vehicle and engine heat loads. Especially at higher Mach numbers, fuel is an attractive heat sink. For many vehicle applications, utilization of this heat sink would increase fuel temperatures beyond critical values, typically 370–400°C (700–750°F). As temperatures increase beyond about 480°C (900°F), this heat addition can lead to thermal/catalytic cracking of the fuel, leading to an “endothermic” fuel. The principal barrier to the use of high temperature fuels is the deposition of carbonaceous material on heat exchanger passages, filters, fuel injectors, and other fuel system components. This paper will review progress in understanding and mitigating the thermal instability/deposition problem. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Airline industry KW - Engines KW - Energy consumption KW - Speed KW - High temperatures KW - coking KW - endothermic KW - jet fuel KW - supercritical KW - thermal cracking N1 - Accession Number: 19183609; Edwards, Tim 1; Email Address: james.edwards@wpafb.af.mil; Affiliations: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio, USA; Issue Info: Jan-Mar2006, Vol. 178 Issue 1-3, p307; Thesaurus Term: Airline industry; Thesaurus Term: Engines; Thesaurus Term: Energy consumption; Subject Term: Speed; Subject Term: High temperatures; Author-Supplied Keyword: coking; Author-Supplied Keyword: endothermic; Author-Supplied Keyword: jet fuel; Author-Supplied Keyword: supercritical; Author-Supplied Keyword: thermal cracking; NAICS/Industry Codes: 481111 Scheduled Passenger Air Transportation; NAICS/Industry Codes: 481110 Scheduled air transportation; NAICS/Industry Codes: 333618 Other Engine Equipment Manufacturing; Number of Pages: 28p; Illustrations: 2 Black and White Photographs, 1 Diagram, 3 Charts, 6 Graphs; Document Type: Article L3 - 10.1080/00102200500294346 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=19183609&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - CHAP ID - 2006-02062-009 AN - 2006-02062-009 AU - Tsang, Pamela S. AU - Vidulich, Michael A. ED - Salvendy, Gavriel ED - Salvendy, Gavriel, (Ed) T1 - Mental workload and situation awareness. T2 - Handbook of human factors and ergonomics, 3rd ed. Y1 - 2006/// SP - 243 EP - 268 CY - Hoboken, NJ, US PB - John Wiley & Sons Inc SN - 0-471-44917-2 AD - Tsang, Pamela S., Department of Psychology, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH, US N1 - Accession Number: 2006-02062-009. Partial author list: First Author & Affiliation: Tsang, Pamela S.; Department of Psychology, Wright State University, Dayton, OH, US. Release Date: 20070820. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 0-471-44917-2, Hardcover. Language: English. Major Descriptor: Awareness; Cognitive Processes; Human Channel Capacity; Human Factors Engineering. Classification: Human Factors Engineering (4010); Cognitive Processes (2340). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 26. AB - This chapter begins with an introductory discussion on human engineering. Next, we review a framework for understanding both mental workload and situation awareness (SA) as parts of human information processing. Then select approaches for assessing mental workload and SA are reviewed. Finally, the roles of mental workload and SA in meeting the demands of future systems are considered. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - mental workload KW - human information processing KW - human engineering KW - situation awareness KW - 2006 KW - Awareness KW - Cognitive Processes KW - Human Channel Capacity KW - Human Factors Engineering KW - 2006 DO - 10.1002/0470048204.ch9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-02062-009&site=ehost-live&scope=site UR - Michael.Vidulich@wpafb.af.mil UR - pamela.tsang@wright.edu DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2006-02062-012 AN - 2006-02062-012 AU - Robinette, Kathleen M. AU - Hudson, Jeffrey A. ED - Salvendy, Gavriel ED - Salvendy, Gavriel, (Ed) T1 - Anthropometry. T2 - Handbook of human factors and ergonomics, 3rd ed. Y1 - 2006/// SP - 322 EP - 339 CY - Hoboken, NJ, US PB - John Wiley & Sons Inc SN - 0-471-44917-2 AD - Robinette, Kathleen M., Air Force Research Laboratory, 2800 Q Street, Wright-Patterson Air Force Base, OH, US N1 - Accession Number: 2006-02062-012. Partial author list: First Author & Affiliation: Robinette, Kathleen M.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Release Date: 20070820. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 0-471-44917-2, Hardcover. Language: English. Major Descriptor: Human Body; Human Factors Engineering; Measurement; Anthropometry. Classification: Engineering & Environmental Psychology (4000). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 18. AB - In this chapter we review anthropometry issues and present an overview of practical effective methods for incorporating the human body in design. Anthropometry, the study of human body measurement, is used in engineering to ensure the maximum benefit and capability of products that people use. The chapter is divided into three sections. Section 2 deals with the selection of cases for characterizing anthropometric variability. Section 3 covers fit-mapping methods. Section 4 is devoted to some of the benefits of the newest method in anthropometric data collection, three-dimensional anthropometry. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - anthropometry KW - human body measurement KW - engineering KW - fit mapping KW - three dimensional anthropometry KW - 2006 KW - Human Body KW - Human Factors Engineering KW - Measurement KW - Anthropometry KW - 2006 DO - 10.1002/0470048204.ch12 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-02062-012&site=ehost-live&scope=site UR - jeff.hudson@wpafb.af.mil UR - kathleen.robinette@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2006-02062-043 AN - 2006-02062-043 AU - Rouse, William B. AU - Boff, Kenneth R. ED - Salvendy, Gavriel ED - Salvendy, Gavriel, (Ed) T1 - Cost-benefit analysis of human systems investments. T2 - Handbook of human factors and ergonomics, 3rd ed. Y1 - 2006/// SP - 1133 EP - 1149 CY - Hoboken, NJ, US PB - John Wiley & Sons Inc SN - 0-471-44917-2 N1 - Accession Number: 2006-02062-043. Partial author list: First Author & Affiliation: Rouse, William B.; Tennenbaum Institute, Georgia Institute of Technology, Atlanta, GA, US. Release Date: 20070820. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 0-471-44917-2, Hardcover. Language: English. Major Descriptor: Costs and Cost Analysis; Human Factors Engineering; Systems. Minor Descriptor: Business Investments; Research and Development. Classification: Engineering & Environmental Psychology (4000); Military Psychology (3800). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 17. AB - The past decade has been a period of very serious scrutiny of the activities of most enterprises. Business processes have been reengineered and enterprises have been downsized or, more popularly, right-sized. Every aspect of an enterprise must now provide value to customers, earn revenues based on this value, and pay its share of costs. Implementation of this philosophy becomes rather difficult when the 'value' provided is indirect and abstract. When anticipated benefits are not readily measurable in monetary units and affect things amenable to monetary measurement only indirectly, it can be very difficult to assess the worth of investments in such benefits. In this chapter we address types of human factors and ergonomics investments that have these intangible characteristics in addition to more tangible attributes. One type is research and development. Another type of investment with these intangible characteristics involves products and services that enhance human effectiveness. These issues are explored in this chapter in the context of alternative frameworks for performing cost-benefit analyses. This leads to clear conclusions about how best to handle these types of investments methodologically. Application of the resulting methodology is then illustrated in the context of three investment problems involving technologies for aiding, training, and assuring the health and safety of personnel in military systems. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cost-benefit analysis KW - human factors KW - ergonomics KW - investments KW - military systems KW - human systems KW - research & development KW - human effectiveness KW - 2006 KW - Costs and Cost Analysis KW - Human Factors Engineering KW - Systems KW - Business Investments KW - Research and Development KW - 2006 DO - 10.1002/0470048204.ch43 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-02062-043&site=ehost-live&scope=site UR - Ken.Boff@wpafb.af.mil UR - bill.rouse@ti.gatech.edu DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2006-02062-052 AN - 2006-02062-052 AU - Schmorrow, Dylan AU - Stanney, Kay M. AU - Wilson, Glenn AU - Young, Peter ED - Salvendy, Gavriel ED - Salvendy, Gavriel, (Ed) T1 - Augmented cognition in human-system interaction. T2 - Handbook of human factors and ergonomics, 3rd ed. Y1 - 2006/// SP - 1364 EP - 1383 CY - Hoboken, NJ, US PB - John Wiley & Sons Inc SN - 0-471-44917-2 AD - Schmorrow, Dylan, Office of Naval Research, 875 N. Randolph Street, Room 1425, Arlington, VA, US N1 - Accession Number: 2006-02062-052. Partial author list: First Author & Affiliation: Schmorrow, Dylan; Office of Naval Research, Arlington, VA, US. Release Date: 20070820. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 0-471-44917-2, Hardcover. Language: English. Major Descriptor: Cognitive Ability; Computers; Human Computer Interaction. Classification: Engineering & Environmental Psychology (4000). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 20. AB - Historically, visionaries such as Licklider (1960) and Engelbart (1963) suggested that human-computer symbiosis should augment human intelligence and extend human cognitive abilities. Yet such intelligence augmentation has so far proved elusive for interactive system developers. There is a burgeoning paradigm shift in interactive computing that has the potential to realize these visionary projections; it is called augmented cognition. Augmented cognition is a constellation of desires, concepts and goals aimed at maximizing human cognitive abilities through the unification of humans and computational systems (Schmorrow and McBride, 2004). Topics discussed in this chapter include cognitive state assessors; human-system augmentation; robust controllers; and application domains. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - augmented cognition KW - human-system interaction KW - human-computer symbiosis KW - cognitive abilities KW - 2006 KW - Cognitive Ability KW - Computers KW - Human Computer Interaction KW - 2006 U1 - Sponsor: Defense Advanced Research Projects Agency. Other Details: Improving Warfighter Information Intake Under Stress Program. Recipients: No recipient indicated DO - 10.1002/0470048204.ch52 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-02062-052&site=ehost-live&scope=site UR - pmy@engr.colostate.edu UR - Glenn.Wilson@wpafb.af.mil UR - stanney@mail.ucf.edu UR - schmord@onr.navy.mil DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2006-20280-001 AN - 2006-20280-001 AU - Connor, Olena AU - Pedersen, Harry K. AU - Cooke, Nancy J. AU - Pringle, Heather L. ED - Cooke, Nancy J. ED - Pringle, Heather L. ED - Pedersen, Harry K. ED - Connor, Olena ED - Cooke, Nancy J., (Ed) ED - Pringle, Heather L., (Ed) ED - Pedersen, Harry K., (Ed) ED - Connor, Olena, (Ed) T1 - CERI human factors of UAVs: 2004 AND 2005 workshop overviews. T2 - Human factors of remotely operated vehicles. T3 - Advances in human performance and cognitive engineering research (Vol 7); ISSN: 1479-3601 (Print) Y1 - 2006/// SP - 3 EP - 20 CY - Amsterdam, Netherlands PB - Elsevier SN - 1479-3601 SN - 0-7623-1247-5 SN - 978-0-7623-1247-4 N1 - Accession Number: 2006-20280-001. Partial author list: First Author & Affiliation: Connor, Olena; Cognitive Engineering Research Institute, AZ, US. Release Date: 20080623. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-7623-1247-5, Hardcover; 978-0-7623-1247-4, Hardcover. Language: English. Conference Information: Annual Human Factors of UAVs Workshop, 1st, May, 2004, Chandler, AZ, US. Conference Note: Also includes highlights of the 2nd Annual Human Factors UAVs Workshop held May, 2005 in Mesa, AZ. Major Descriptor: Aircraft; Human Factors Engineering; Human Machine Systems; Technology. Minor Descriptor: Military Personnel. Classification: Human Factors Engineering (4010). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). Page Count: 18. AB - The great success of unmanned aerial vehicles (UAVs) in performing near-real time tactical, reconnaissance, intelligence, surveillance and other various missions has attracted broad attention from military and civilian communities. A critical contribution to the increase and extension of UAV applications, resides in the separation of pilot and vehicle allowing the operator to avoid dangerous and harmful situations. However, this apparent benefit has the potential to lead to problems when the role of humans in remotely operating 'unmanned' vehicles is not considered. Although, UAVs do not carry humans onboard, they do require human control and maintenance. To control UAVs, skilled and coordinated work of operators on the ground is required. Despite the fact that UAVs are growing rapidly in numbers, the human factors issues of UAV operations are misunderstood and often overlooked. Too often UAV human factor issues are ignored and the main emphasis is put on UAV hardware capabilities. The two workshops described in this chapter were held to address the human factors gaps in UAV technology. These two workshops inspired much of the material in this volume and are summarized in this introductory chapter. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - unmanned aerial vehicles KW - human factors KW - technology KW - military & civilian communities KW - 2006 KW - Aircraft KW - Human Factors Engineering KW - Human Machine Systems KW - Technology KW - Military Personnel KW - 2006 DO - 10.1016/S1479-3601(05)07001-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-20280-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2006-20280-002 AN - 2006-20280-002 AU - Pedersen, Harry K. AU - Cooke, Nancy J. AU - Pringle, Heather L. AU - Connor, Olena ED - Cooke, Nancy J. ED - Pringle, Heather L. ED - Pedersen, Harry K. ED - Connor, Olena ED - Cooke, Nancy J., (Ed) ED - Pringle, Heather L., (Ed) ED - Pedersen, Harry K., (Ed) ED - Connor, Olena, (Ed) T1 - UAV human factors: Operator perspectives. T2 - Human factors of remotely operated vehicles. T3 - Advances in human performance and cognitive engineering research (Vol 7); ISSN: 1479-3601 (Print) Y1 - 2006/// SP - 21 EP - 33 CY - Amsterdam, Netherlands PB - Elsevier SN - 1479-3601 SN - 0-7623-1247-5 SN - 978-0-7623-1247-4 N1 - Accession Number: 2006-20280-002. Partial author list: First Author & Affiliation: Pedersen, Harry K.; Cognitive Engineering Research Institute, Mesa, AZ, US. Release Date: 20080623. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-7623-1247-5, Hardcover; 978-0-7623-1247-4, Hardcover. Language: English. Major Descriptor: Aircraft; Human Factors Engineering; Human Machine Systems. Minor Descriptor: Military Personnel; Technology. Classification: Human Factors Engineering (4010); Military Psychology (3800). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 13. AB - The Cognitive Engineering Research Institute's First Annual Human Factors of unmanned aerial vehicles (UAVs) Workshop, held on May 24-25, 2004 in Chandler, Arizona, and Second Annual Human Factors of UAVs Workshop, held on May 25-26, 2005 in Mesa, Arizona, brought to light many human factors issues regarding the technology and operation of UAVs. An integral part of the event was the involvement of military UAV operators from the U.S. Air Force (USAF), U.S. Navy, and U.S. Army. The involvement of UAV operators in the workshops was valuable in linking developers and human factors researchers in the improvement of UAV systems and operations--a practice that is too often implemented only after a system is deployed and the problems are found. The experience of operators serves as a 'user's account' of the issues and problems concerning the operation of UAVs. The fact that operators have had first hand experience in operating UAVs provides a unique perspective to the problem of identifying the most pressing human factors issues. The purpose of this chapter is to highlight the perspectives of two UAV operators that helped to set the tone for the entire First Annual Human Factors of UAVs Workshop. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - unmanned aerial vehicles KW - human factors KW - technology KW - military KW - human factors researchers KW - 2006 KW - Aircraft KW - Human Factors Engineering KW - Human Machine Systems KW - Military Personnel KW - Technology KW - 2006 DO - 10.1016/S1479-3601(05)07002-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-20280-002&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2006-20280-004 AN - 2006-20280-004 AU - Nelson, W. Todd AU - Bolia, Robert S. ED - Cooke, Nancy J. ED - Pringle, Heather L. ED - Pedersen, Harry K. ED - Connor, Olena ED - Cooke, Nancy J., (Ed) ED - Pringle, Heather L., (Ed) ED - Pedersen, Harry K., (Ed) ED - Connor, Olena, (Ed) T1 - Supervisory control of uninhabited combat air vehicles from an airborne battle management command and control platform: Human factors issues. T2 - Human factors of remotely operated vehicles. T3 - Advances in human performance and cognitive engineering research (Vol 7); ISSN: 1479-3601 (Print) Y1 - 2006/// SP - 49 EP - 58 CY - Amsterdam, Netherlands PB - Elsevier SN - 1479-3601 SN - 0-7623-1247-5 SN - 978-0-7623-1247-4 N1 - Accession Number: 2006-20280-004. Partial author list: First Author & Affiliation: Nelson, W. Todd; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Release Date: 20080623. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-7623-1247-5, Hardcover; 978-0-7623-1247-4, Hardcover. Language: English. Major Descriptor: Aircraft; Human Factors Engineering; Human Machine Systems; Military Personnel. Minor Descriptor: Weapons; Working Conditions. Classification: Human Factors Engineering (4010); Military Psychology (3800). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 10. AB - Within the framework of current and near-term concepts of operations (CONOPS), squadrons of uninhabited combat air vehicles (UCAVs) will be controlled or monitored by operators located in ground-based control stations, connected by radios or other communication links to command and control (C2) elements in air operation centers or battle management command and control (BMC2) platforms such as the Airborne Warning and Control System (AWACS) or the Joint Surveillance Target Attack Radar System (JSTARS). Some military analysts have suggested that the control of UCAVs tasked with the suppression of enemy air defenses (SEAD) mission could be accomplished by air weapons officers on a BMC2 platform, since they currently provide tactical C2 for SEAD missions. While there have been rudimentary treatments of the operational concerns associated with control of UCAVs by BMC2 platforms, little if anything has been written with respect to the relevant human factors questions. Specifically, issues involving operator and team fatigue, mental workload, attention, situation awareness, decision effectiveness, and the challenges associated with human interaction with automated systems may mediate the efficacy of this CONOPS in ways not previously considered. This chapter will introduce the application domain and develop the proposed CONOPS, which will lay the foundation for a critical review of the human factors challenges in the context of theory and research from complex supervisory work environments. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - uninhabited combat air vehicles KW - military analysts KW - human factors issues KW - work environments KW - human automated systems interaction KW - supervisory control KW - 2006 KW - Aircraft KW - Human Factors Engineering KW - Human Machine Systems KW - Military Personnel KW - Weapons KW - Working Conditions KW - 2006 DO - 10.1016/S1479-3601(05)07004-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-20280-004&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2006-20280-010 AN - 2006-20280-010 AU - Self, Brian P. AU - Ercoline, William R. AU - Olson, Wesley A. AU - Tvaryanas, Anthony P. ED - Cooke, Nancy J. ED - Pringle, Heather L. ED - Pedersen, Harry K. ED - Connor, Olena ED - Cooke, Nancy J., (Ed) ED - Pringle, Heather L., (Ed) ED - Pedersen, Harry K., (Ed) ED - Connor, Olena, (Ed) T1 - Spatial disorientation in uninhabited aerial vehicles. T2 - Human factors of remotely operated vehicles. T3 - Advances in human performance and cognitive engineering research (Vol 7); ISSN: 1479-3601 (Print) Y1 - 2006/// SP - 133 EP - 146 CY - Amsterdam, Netherlands PB - Elsevier SN - 1479-3601 SN - 0-7623-1247-5 SN - 978-0-7623-1247-4 N1 - Accession Number: 2006-20280-010. Partial author list: First Author & Affiliation: Self, Brian P.; United States Air Force Academy, CO, US. Release Date: 20080623. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-7623-1247-5, Hardcover; 978-0-7623-1247-4, Hardcover. Language: English. Major Descriptor: Aviation; Errors; Human Factors Engineering; Spatial Orientation (Perception). Minor Descriptor: Aerospace Personnel; Military Personnel. Classification: Human Factors Engineering (4010); Military Psychology (3800). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 14. AB - While the threat of spatial disorientation (SD) is well documented and accepted in traditional manned aviation, it is sometimes regarded with more skepticism when discussed in reference to operations involving unmanned aerial vehicles (UAVs) or uninhabited aerial combat vehicles (UCAVs). However, as mishap reports illustrate, UAV operators may be just as susceptible to SD as those who fly in the cockpit. A recent 10-year cross sectional review of human factors in UAV mishaps within the U.S. Department of Defense (DoD) found misperception error was present in 5% of mishaps. Additionally, misperception error accounted for 10% of UAV mishaps in which operator error was a causal factor irrespective of branch of military service. It is worth noting that current human error rates are overshadowed by the higher unreliability of other UAV subsystems. As was the case in manned aviation, the proportion of mishaps involving misperception errors can be expected to increase as subsystem reliabilities improve and electromechanical causes of mishaps decline. Although there are mishap reports indicating that SD may be a problem in UAV operations, there is very little data analyzing the exact SD mechanisms or even primary illusions that occur. Due to the dearth of research in this area, we will provide a theoretical framework for examining SD problems in UAVs. We first present some background information and definitions of SD. This is followed by a suggested taxonomy for describing UAV operations, and then a discussion of when SD might occur during UAV flight. Finally, some suggested countermeasures to the UAV SD problem are provided. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - spatial disorientation KW - uninhabited aerial vehicles KW - unmanned aerial combat vehicles KW - human factors KW - misperception errors KW - 2006 KW - Aviation KW - Errors KW - Human Factors Engineering KW - Spatial Orientation (Perception) KW - Aerospace Personnel KW - Military Personnel KW - 2006 DO - 10.1016/S1479-3601(05)07010-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-20280-010&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2006-20280-011 AN - 2006-20280-011 AU - Calhoun, Gloria L. AU - Draper, Mark H. ED - Cooke, Nancy J. ED - Pringle, Heather L. ED - Pedersen, Harry K. ED - Connor, Olena ED - Cooke, Nancy J., (Ed) ED - Pringle, Heather L., (Ed) ED - Pedersen, Harry K., (Ed) ED - Connor, Olena, (Ed) T1 - Multi-sensory interfaces for remotely operated vehicles. T2 - Human factors of remotely operated vehicles. T3 - Advances in human performance and cognitive engineering research (Vol 7); ISSN: 1479-3601 (Print) Y1 - 2006/// SP - 149 EP - 163 CY - Amsterdam, Netherlands PB - Elsevier SN - 1479-3601 SN - 0-7623-1247-5 SN - 978-0-7623-1247-4 N1 - Accession Number: 2006-20280-011. Partial author list: First Author & Affiliation: Calhoun, Gloria L.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Release Date: 20080623. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-7623-1247-5, Hardcover; 978-0-7623-1247-4, Hardcover. Language: English. Major Descriptor: Human Factors Engineering; Human Machine Systems; Robotics; Sensory Feedback; Technology. Classification: Human Factors Engineering (4010); Robotics (4140). Population: Human (10). Location: US. Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 15. AB - In remotely operated vehicles (ROVs), one or more humans remotely manipulate a machine to perform a task. Examples include operating unmanned ground and air vehicles, land rovers on Mars, waste clean-up robots in nuclear facilities, etc. Typically, controllers of ROVs are limited to a reduced stream of sensory feedback delivered almost exclusively through the visual channel. It is hypothesized that operator situation awareness and performance may be improved through increased multi-sensory stimulation akin to that experienced in non-remote control (i.e., operator directly controlling a machine within the task environment). These improvements might stem from increasing the operator's sense of 'presence' in the remote environment, and/or from increasing information throughput afforded by effective use of simultaneous multi-channel (e.g., audio and tactile feedback) stimulation. For instance, multi-sensory interfaces may enhance time-sharing (pertinent information from different sources comes through different sensory channels simultaneously) and improve attention capture (two or more senses transmit identical or supporting information simultaneously). Additionally, multi-sensory display techniques may result in a more intuitive presentation of information. This chapter will introduce multi-sensory interfaces that research has suggested as potential candidates for ROVs. Due to space limitations, the focus will be on technologies examined during the past few years at the Air Force Research Laboratory (AFRL) at Wright-Patterson Air Force Base. These multi-sensory technologies were evaluated to assess their utility in improving control operations performed by the pilot and the sensor operator (SO) for a teleoperated ROV application. Specifically, AFRL's research on visual, tactile, and spatial aural displays, as well as speech-based input will be reviewed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - remotely operated vehicles KW - sensory feedback KW - operator awareness KW - multi-sensory interfaces KW - multi-sensory technologies KW - visual KW - tactile KW - & spatial aural displays KW - speech-based input KW - 2006 KW - Human Factors Engineering KW - Human Machine Systems KW - Robotics KW - Sensory Feedback KW - Technology KW - 2006 DO - 10.1016/S1479-3601(05)07011-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-20280-011&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Maute, K. AU - Reich, G. W. T1 - Integrated Multidisciplinary Topology Optimization Approach to Adaptive Wing Design. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2006/01//Jan/Feb2006 Y1 - 2006/01//Jan/Feb2006 VL - 43 IS - 1 M3 - Article SP - 253 EP - 263 SN - 00218669 AB - This paper presents a novel optimization approach to the design of mechanisms in morphing aircraft structures. The layout of the mechanism and the location and number of actuators and pivots are determined by an extended formulation of a material-based topology optimization. The design problem is modeled within a coupled fluid-structure analysis framework to directly assess aerodynamic performance criteria while optimizing the overall mechanized system. The proposed methodology is illustrated through the design optimization of a quasi-three-dimensional section of an adaptive wing, where the approach is compared to a conventional two-step approach of first optimizing the aerodynamic shape for one or multiple flight conditions, and then finding the mechanism that leads to this shape. The comparison shows that the interactions between flow, structural deformation, mechanism, and actuator must be considered to find the optimal solution. The optimization approach presented allows direct consideration of these interactions at the expense of an increased computational burden. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - AIRPLANES -- Design & construction KW - ACTUATORS KW - FLIGHT KW - AERODYNAMICS N1 - Accession Number: 20375394; Source Information: Jan/Feb2006, Vol. 43 Issue 1, p253; Subject Term: AIRPLANE wings; Subject Term: AIRPLANES -- Design & construction; Subject Term: ACTUATORS; Subject Term: FLIGHT; Subject Term: AERODYNAMICS; Subject Term: ; Number of Pages: 11p; ; Illustrations: 11 Diagrams, 2 Charts; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=20375394&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Rauch, Michelle AU - Graef, Harold AU - Rozenzhak, Sophie AU - Jones, Sharon AU - Bleckmann, Charles AU - Kruger, Randell AU - Naik, Rajesh AU - Stone, Morley T1 - Characterization of microbial contamination in United States Air Force aviation fuel tanks. JO - Journal of Industrial Microbiology & Biotechnology JF - Journal of Industrial Microbiology & Biotechnology Y1 - 2006/01// VL - 33 IS - 1 M3 - Article SP - 29 EP - 36 PB - Springer Science & Business Media B.V. SN - 13675435 AB - Bacteria and fungi, isolated from United States Air Force (USAF) aviation fuel samples, were identified by gas chromatograph fatty acid methyl ester (GC-FAME) profiling and 16S or 18S rRNA gene sequencing. Thirty-six samples from 11 geographically separated USAF bases were collected. At each base, an above-ground storage tank, a refueling truck, and an aircraft wing tank were sampled at the lowest sample point, or sump, to investigate microbial diversity and dispersion within the fuel distribution chain. Twelve genera, including four Bacillus species and two Staphylococcus species, were isolated and identified. Bacillus licheniformis, the most prevalent organism isolated, was found at seven of the 11 bases. Of the organisms identified, Bacillus sp., Micrococcus luteus, Sphinogmonas sp., Staphylococcus sp., and the fungus Aureobasidium pullulans have previously been isolated from aviation fuel samples. The bacteria Pantoea ananatis, Arthrobacter sp., Alcaligenes sp., Kocuria rhizophilia, Leucobacter komagatae, Dietza sp., and the fungus Discophaerina fagi have not been previously reported in USAF aviation fuel. Only at two bases were the same organisms isolated from all three sample points in the fuel supply distribution chain. Isolation of previously undocumented organisms suggests either, changes in aviation fuel microbial community in response to changes in aviation fuel composition, additives and biocide use, or simply, improvements in isolation and identification techniques. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Industrial Microbiology & Biotechnology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Microbial contamination KW - Viral contamination KW - Bacteria KW - Fungi KW - Fungus-bacterium relationships KW - Airplanes -- Fuel tanks KW - United States KW - Aviation fuel KW - Fuel microorganisms KW - Jet-A KW - JP-4 KW - JP-8 KW - United States. Air Force N1 - Accession Number: 19300773; Rauch, Michelle 1; Graef, Harold 2; Rozenzhak, Sophie 1; Jones, Sharon 3; Bleckmann, Charles 2; Email Address: Charles.Bleckmann@afit.edu; Kruger, Randell 1; Naik, Rajesh 4; Stone, Morley 4; Affiliations: 1: Fuels Branch, Propulsion Directorate , Air Force Research Laboratory , Wright-Patterson AFB 45433 USA; 2: Department of Systems and Engineering Management , Air Force Institute of Technology , Wright-Patterson AFB OH 45433 USA; 3: UES , 4401 Dayton-Xenia Road Dayton 45432 USA; 4: Materials and Manufacturing Directorate , Biotechnology Group, Air Force Research Laboratory , Wright-Patterson AFB 45433 USA; Issue Info: Jan2006, Vol. 33 Issue 1, p29; Thesaurus Term: Microbial contamination; Thesaurus Term: Viral contamination; Thesaurus Term: Bacteria; Thesaurus Term: Fungi; Thesaurus Term: Fungus-bacterium relationships; Subject Term: Airplanes -- Fuel tanks; Subject: United States; Author-Supplied Keyword: Aviation fuel; Author-Supplied Keyword: Fuel microorganisms; Author-Supplied Keyword: Jet-A; Author-Supplied Keyword: JP-4; Author-Supplied Keyword: JP-8 ; Company/Entity: United States. Air Force; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 928110 National Security; Number of Pages: 8p; Illustrations: 3 Charts; Document Type: Article L3 - 10.1007/s10295-005-0023-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=19300773&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - CHAP ID - 2005-11449-001 AN - 2005-11449-001 AU - Bar-On, Reuven AU - Handley, Richard AU - Fund, Suzanne ED - Druskat, Vanessa Urch ED - Sala, Fabio ED - Mount, Gerald ED - Druskat, Vanessa Urch, (Ed) ED - Sala, Fabio, (Ed) ED - Mount, Gerald, (Ed) T1 - The Impact of Emotional Intelligence on Performance. T2 - Linking emotional intelligence and performance at work: Current research evidence with individuals and groups. Y1 - 2006/// SP - 3 EP - 19 CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-5073-2 SN - 0-8058-5074-0 N1 - Accession Number: 2005-11449-001. Partial author list: First Author & Affiliation: Bar-On, Reuven; University of Texas Medical Branch, Galveston, TX, US. Release Date: 20060306. Correction Date: 20120827. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-8058-5073-2, Hardcover; 0-8058-5074-0, Paperback. Language: English. Major Descriptor: Emotional Intelligence; Job Performance. Minor Descriptor: Military Personnel. Classification: Industrial & Organizational Psychology (3600); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: Israel; US. Age Group: Adolescence (13-17 yrs) (200); Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). Tests & Measures: Baron Emotional Quotient Inventory. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 17. AB - Much has been said about the impact of emotional intelligence (EI) on human performance since the 1995 publication of a best-seller by the same name (Goleman, 1995). However, a great deal of what has been said is, unfortunately, based on supposition rather than scientific research. It is the purpose of this chapter to empirically demonstrate that EI does indeed impact performance. In an effort 'to tell it like it is,' our chapter presents the empirical evidence that we have regarding the impact of emotional intelligence on performance. Findings are presented that might help explain why some people function better than others, assume positions of leadership, and even volunteer for highly stressful and potentially dangerous tasks at times, whereas others are unable to emotionally and socially deal with daily demands in a more intelligent and effective manner. Two major studies provide the foundation for our discussion. One study was conducted in the U.S. Air Force (USAF) and the other in the Israeli Defense Forces (IDF). (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - emotional intelligence KW - human performance KW - Israeli Defense Forces KW - U.S. Air Force KW - 2006 KW - Emotional Intelligence KW - Job Performance KW - Military Personnel KW - 2006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-11449-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 106106254 T1 - Location matters: why target location impacts performance in orientation tasks. AU - Gunzelmann G AU - Anderson JR Y1 - 2006/01// N1 - Accession Number: 106106254. Language: English. Entry Date: 20070622. Revision Date: 20150711. Publication Type: Journal Article; pictorial; research; tables/charts. Journal Subset: Allied Health; Biomedical; Peer Reviewed; USA. Grant Information: Grant F49620-99-1-0086 from the Air Force Office of Scientific Research; National Research Service Award Training Grant 5-T32-MH19983 from the National Institute of Mental Health. NLM UID: 0357443. KW - Orientation KW - Visual Perception KW - Adult KW - Analysis of Variance KW - Chi Square Test KW - Depth Perception KW - Experimental Studies KW - Female KW - Funding Source KW - Male KW - Pennsylvania KW - Reaction Time KW - Repeated Measures KW - Software KW - Theory KW - Human SP - 41 EP - 59 JO - Memory & Cognition JF - Memory & Cognition JA - MEM COGNIT VL - 34 IS - 1 CY - , PB - Springer Science & Business Media B.V. AB - This research explores human performance in a spatial orientation task. In three experiments, participants saw a target highlighted in a visual scene and were asked to locate it on a map of the space. Across all of the experiments, the target's location in the visual scene influenced the participants' response times. Generally, response times increased when the target was located farther away from the viewer, when the target was farther to one side or the other, and when more distractors were nearby. However, there were important exceptions to these findings, suggesting that participants encode the location of a target hierarchically, using different features of the space depending on the target's particular location. We conclude that participants perform such tasks by extracting a description from the egocentric view and then transforming that description to allow them to find the target on the map. SN - 0090-502X AD - Air Force Research Laboratory-HEAS, Mesa, AZ 85212-6061, USA. glenn.gunzelmann@mesa.afmc.af.mil U2 - PMID: 16686105. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106106254&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - CHAP ID - 2006-11904-002 AN - 2006-11904-002 AU - Budd, Frank C. AU - Kennedy, Carrie H. ED - Kennedy, Carrie H. ED - Zillmer, Eric A. ED - Kennedy, Carrie H., (Ed) ED - Zillmer, Eric A., (Ed) T1 - Introduction to Clinical Military Psychology. T2 - Military psychology: Clinical and operational applications. Y1 - 2006/// SP - 21 EP - 34 CY - New York, NY, US PB - Guilford Press SN - 1572307242 SN - 9781572307247 N1 - Accession Number: 2006-11904-002. Partial author list: First Author & Affiliation: Budd, Frank C.; United States Air Force, Organizational Consulting Office, Kirtland Air Force Base, NM, US. Release Date: 20061106. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 1572307242, Hardcover; 9781572307247, Hardcover. Language: English. Major Descriptor: Clinical Psychology; Military Personnel; Military Psychology. Minor Descriptor: Drug Abuse; Gambling; Neuropsychology; Psychotherapy; Stress. Classification: Military Psychology (3800). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 14. AB - As presented in Chapter 1 (this volume), military psychologists have led the way for the development of much of what we know about psychology practice in and out of the military today. In the exploration of the activities of military psychologists after the terrorist attacks of September 11, 2001, this is just as true now as ever before (Budd, 2004). Psychologists in all branches of the military are at the forefront in research on deployment of community prevention resources, are integral members of primary care medical teams and members of community disaster preparedness teams (Clay, 2001; Institute of Medicine, 2003), and have been pioneers in securing prescription privileges for psychologists (Sammons, Levant, & Paige, 2003). In addition, many military psychologists are essential personnel to deployed units like the Navy hospital ships and aircraft carriers, Marine expeditionary strike groups and combat stress platoons (note that the Marines utilize Navy medical personnel, including psychologists), Army combat stress control units, and Air Force combat stress units. This chapter introduces clinical psychological applications relevant to the armed forces and provides an overview of specific practical aspects of the field. The intent is to provide an introductory discussion and facilitate an understanding of clinical military psychology. There are specific and unique characteristics of practicing clinical psychology in a military environment that differ from traditional roles. These include distinctive differences in internship and fellowship training, officer versus provider roles, the influence of rank on the therapeutic relationship, distinctive limits of confidentiality, the unavoidable ethical dilemma of multiple relationships, and unique multicultural training needs. This chapter also serves to introduce the remainder of this section of the book (which focuses on the bulk of the clinical work performed by military psychologists) including fitness-for- duty evaluations, brief psychotherapy, clinical health psychology, neuropsychology, suicide risk assessments, and substance abuse and gambling intervention and treatment. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - clinical military psychology KW - clinical work KW - psychotherapy KW - neuropsychology KW - suicide risk assessment KW - substance abuse KW - 2006 KW - Clinical Psychology KW - Military Personnel KW - Military Psychology KW - Drug Abuse KW - Gambling KW - Neuropsychology KW - Psychotherapy KW - Stress KW - 2006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-11904-002&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2006-11904-003 AN - 2006-11904-003 AU - Budd, Frank C. AU - Harvey, Sally ED - Kennedy, Carrie H. ED - Zillmer, Eric A. ED - Kennedy, Carrie H., (Ed) ED - Zillmer, Eric A., (Ed) T1 - Military Fitness-for-Duty Evaluations. T2 - Military psychology: Clinical and operational applications. Y1 - 2006/// SP - 35 EP - 60 CY - New York, NY, US PB - Guilford Press SN - 1572307242 SN - 9781572307247 N1 - Accession Number: 2006-11904-003. Partial author list: First Author & Affiliation: Budd, Frank C.; United States Air Force, Organizational Consulting Office, Kirtland Air Force Base, NM, US. Release Date: 20061106. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 1572307242, Hardcover; 9781572307247, Hardcover. Language: English. Major Descriptor: Mental Health; Military Personnel; Military Psychology; Personnel Evaluation; Professional Competence. Minor Descriptor: Neuropsychological Assessment. Classification: Military Psychology (3800). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 26. AB - Fitness-for-duty evaluations make up a broad field because of the wide variety of duties, expectations, responsibilities, work environments, and skills needed by the many different types of jobs performed in the military. The most common fitness-for-duty evaluation will answer the following question: Are particular service members able to safely and effectively perform their jobs from a mental health or neuropsychological standpoint? Other, more focused evaluations may also be requested for the assessment of individuals to perform specialized duties or hold a particular status, as well as disability evaluations and forensic assessments secondary to court-ordered sanity boards. Although this chapter's primary focus is on traditional fitness-for-duty evaluations, a short discussion of several of these other forms of evaluation is also included. To provide some clarity about the fitness-for-duty evaluation process, this chapter discusses key issues that commonly arise in these types of evaluations. However, as there are some relatively minor idiosyncrasies among the services, it is recommended that the reader consult that service's regulations for specific guidance. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - fitness-for-duty evaluations KW - mental health KW - neuropsychological assessment KW - military psychology KW - 2006 KW - Mental Health KW - Military Personnel KW - Military Psychology KW - Personnel Evaluation KW - Professional Competence KW - Neuropsychological Assessment KW - 2006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-11904-003&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2006-11904-004 AN - 2006-11904-004 AU - Ball, J. D. AU - Peake, Thomas H. ED - Kennedy, Carrie H. ED - Zillmer, Eric A. ED - Kennedy, Carrie H., (Ed) ED - Zillmer, Eric A., (Ed) T1 - Brief Psychotherapy in the U.S. Military: Principles and Applications. T2 - Military psychology: Clinical and operational applications. Y1 - 2006/// SP - 61 EP - 73 CY - New York, NY, US PB - Guilford Press SN - 1572307242 SN - 9781572307247 N1 - Accession Number: 2006-11904-004. Partial author list: First Author & Affiliation: Ball, J. D.; United States Air Force Reserve, The Neuropsychology Center, US. Release Date: 20061106. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 1572307242, Hardcover; 9781572307247, Hardcover. Language: English. Major Descriptor: Brief Psychotherapy; Military Personnel; Military Psychology. Classification: Military Psychology (3800). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 13. AB - Over the past century the practice of psychotherapy, as well as the principles of psychological assessment, have defined the field of clinical psychology. It is not surprising that related to the advancements of this field are similar advances in psychotherapy in the military setting. Modern brief therapy has evolved to include especially such specific approaches as cognitive-behavioral interventions, problem-focused-solution therapy, dialectical behavior therapy, brief psychodynamic therapy, and a wide range of such specific methods as assertiveness training, anger management, weight reduction, smoking cessation, parent education, child behavior management, pain control, and stress reduction strategies, all of which are now practiced regularly in military settings. This chapter reviews broader principles within the context of brief forms of therapeutic intervention, which is appropriately applied in all of these approaches and methods. That is, briefer forms of psychotherapy are a reliable and valid form of psychotherapeutic interventions, which are especially appropriate for the military culture. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - brief psychotherapy KW - military settings KW - therapeutic intervention KW - 2006 KW - Brief Psychotherapy KW - Military Personnel KW - Military Psychology KW - 2006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-11904-004&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2006-11904-005 AN - 2006-11904-005 AU - Peterson, Alan L. ED - Kennedy, Carrie H. ED - Zillmer, Eric A. ED - Kennedy, Carrie H., (Ed) ED - Zillmer, Eric A., (Ed) T1 - Clinical Health Psychology and Behavioral Medicine in Military Healthcare Settings. T2 - Military psychology: Clinical and operational applications. Y1 - 2006/// SP - 74 EP - 104 CY - New York, NY, US PB - Guilford Press SN - 1572307242 SN - 9781572307247 N1 - Accession Number: 2006-11904-005. Partial author list: First Author & Affiliation: Peterson, Alan L.; United States Air Force, University of Texas Health Science Center, San Antonio, TX, US. Release Date: 20061106. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 1572307242, Hardcover; 9781572307247, Hardcover. Language: English. Major Descriptor: Clinical Psychology; Health Care Services; Health Care Psychology; Military Psychology; Behavioral Medicine. Minor Descriptor: Risk Factors. Classification: Military Psychology (3800); Health & Mental Health Services (3370). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 31. AB - This chapter reviews the specialty area of behavioral medicine and clinical health psychology in military healthcare. The chapter begins with the definition of various terms used to describe this area. Next, the recommended education and training for individuals interested in working in this specialty are evaluated. The chapter examines the spectrum of applications of behavioral medicine and clinical health psychology, including disease management and health interventions. Finally, the chapter provides a brief review of individual and group evidence-based interventions for common behavioral risk factors and medical conditions treated in military behavioral medicine and clinical health psychology settings. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - behavioral medicine KW - clinical health psychology KW - military psychology KW - health interventions KW - behavioral risk factors KW - 2006 KW - Clinical Psychology KW - Health Care Services KW - Health Care Psychology KW - Military Psychology KW - Behavioral Medicine KW - Risk Factors KW - 2006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-11904-005&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2006-11904-006 AN - 2006-11904-006 AU - Ryan, Laurie M. AU - Zazeckis, Thomas M. AU - French, Louis M. AU - Harvey, Sally ED - Kennedy, Carrie H. ED - Zillmer, Eric A. ED - Kennedy, Carrie H., (Ed) ED - Zillmer, Eric A., (Ed) T1 - Neuropsychological Practice in the Military. T2 - Military psychology: Clinical and operational applications. Y1 - 2006/// SP - 105 EP - 129 CY - New York, NY, US PB - Guilford Press SN - 1572307242 SN - 9781572307247 N1 - Accession Number: 2006-11904-006. Partial author list: First Author & Affiliation: Ryan, Laurie M.; Defense and Veterans Brain Injury Center, Walter Reed Army Medical Center, Washington, DC, US. Release Date: 20061106. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 1572307242, Hardcover; 9781572307247, Hardcover. Language: English. Major Descriptor: Military Personnel; Military Psychology; Neuropsychological Assessment; Neuropsychology. Minor Descriptor: Telemedicine. Classification: Military Psychology (3800). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 25. AB - Military neuropsychology's roots date back to World War I, when early assessment and neurological rehabilitative efforts were first undertaken as a result of the many head injuries sustained by service members during combat (Boake, 1989). Since that time, military neuropsychology has grown and neuropsychological assessment practices continue to play a key role in operational readiness and maintenance of peak performance of military members. This chapter provides an overview of this specialized field, with brief discussions of requisite training, common areas of clinical practice, aerospace neuropsychology, operational applications, and recent developments in telemedicine. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - neuropsychological assessment KW - neuropsychology KW - military psychology KW - service members KW - telemedicine KW - aerospace neuropsychology KW - clinical practice KW - 2006 KW - Military Personnel KW - Military Psychology KW - Neuropsychological Assessment KW - Neuropsychology KW - Telemedicine KW - 2006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-11904-006&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2006-11904-008 AN - 2006-11904-008 AU - Kennedy, Carrie H. AU - Jones, David E. AU - Grayson, Revonda ED - Kennedy, Carrie H. ED - Zillmer, Eric A. ED - Kennedy, Carrie H., (Ed) ED - Zillmer, Eric A., (Ed) T1 - Substance Abuse Services and Gambling Treatment in the Military. T2 - Military psychology: Clinical and operational applications. Y1 - 2006/// SP - 163 EP - 190 CY - New York, NY, US PB - Guilford Press SN - 1572307242 SN - 9781572307247 N1 - Accession Number: 2006-11904-008. Partial author list: First Author & Affiliation: Kennedy, Carrie H.; United States Navy, University of Virginia, Charlottesville, VA, US. Release Date: 20061106. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 1572307242, Hardcover; 9781572307247, Hardcover. Language: English. Major Descriptor: Drug Abuse; Drug Rehabilitation; Gambling; Intervention; Military Personnel. Minor Descriptor: Comorbidity; Drug Abuse Prevention; Posttraumatic Stress Disorder. Classification: Military Psychology (3800); Drug & Alcohol Rehabilitation (3383). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 28. AB - In 1980, the U.S. Department of Defense began the first in a series of systematic studies on health-related behaviors of military personnel across periods of peace and war (Bray et al., 1983, 1995, 2003). These studies included surveillance of substance use trends and their impact on military readiness. Overall, the most recent survey results reveal that the military has made a noteworthy improvement in combating illegal drug use. Prevalence rates declined from 27.6% in 1980 to 3.4% in 2002 (Bray et al., 2003) largely attributable to the military's zero tolerance policy for illicit drug use (Mehay & Pacula, 1999). Alcohol abuse levels have proven more variable as indicated by declining abuse rates from 1980 to 1998 but a recent increase noted in the 2002 survey. Service members reported an increase in serious consequences, productivity loss, alcohol dependence symptoms, average alcohol consumption, and heavy alcohol use (Bray et al., 2003). Alcohol problems affect the mission readiness of personnel across the spectrum of military occupational specialties. Although substance-related problems continue among uniformed personnel, significant attention has been given to reducing their impact across the military community. This chapter addresses the widespread prevention efforts (e.g., zero tolerance, random urinalysis, and mandatory education) underway throughout the military, early intervention services (e.g., alcohol screenings and intense education), the components of a comprehensive evaluation of a possible substance or gambling disorder, and the comorbidity of substance use disorders (SUDs) and posttraumatic stress disorder (PTSD). The final section examines treatment options available for activeduty service members who experience problems with alcohol, drugs, and/or gambling (e.g., outpatient, intensive outpatient, and residential treatment). (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - substance abuse services KW - alcohol dependence KW - intervention KW - posttraumatic stress disorder KW - gambling KW - comorbidity KW - 2006 KW - Drug Abuse KW - Drug Rehabilitation KW - Gambling KW - Intervention KW - Military Personnel KW - Comorbidity KW - Drug Abuse Prevention KW - Posttraumatic Stress Disorder KW - 2006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-11904-008&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2006-11904-010 AN - 2006-11904-010 AU - Campise, Rick L. AU - Geller, Schuyler K. AU - Campise, Mary E. ED - Kennedy, Carrie H. ED - Zillmer, Eric A. ED - Kennedy, Carrie H., (Ed) ED - Zillmer, Eric A., (Ed) T1 - Combat Stress. T2 - Military psychology: Clinical and operational applications. Y1 - 2006/// SP - 215 EP - 240 CY - New York, NY, US PB - Guilford Press SN - 1572307242 SN - 9781572307247 N1 - Accession Number: 2006-11904-010. Partial author list: First Author & Affiliation: Campise, Rick L.; United States Air Force, Air Force Deployment Behavioral Health, Air Force Medical Operations Agency, Office of the Surgeon General, Falls Church, VA, US. Release Date: 20061106. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 1572307242, Hardcover; 9781572307247, Hardcover. Language: English. Major Descriptor: Combat Experience; Military Personnel; Posttraumatic Stress Disorder; Stress Reactions; War. Minor Descriptor: Fatigue. Classification: Military Psychology (3800); Neuroses & Anxiety Disorders (3215). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 26. AB - The term 'combat stress' has undergone a variety of name changes over the course of time (Jones, 1995; U.S. Department of the Army, 1994a). During the American Civil War, combat stress was identified as nostalgia and homesickness. In World War I (WWI), this experience was referred to as shell shock, effort syndrome, war neurosis, gas hysteria, Da Costa's syndrome, irritable heart syndrome, and not-yet-diagnosed nervous. The terms psychoneurosis, effort syndrome, combat exhaustion, battle fatigue, and operational fatigue were used in World War II (WWII). During the Korean War, this package of symptoms was identified as battle fatigue and combat exhaustion. In the Vietnam War, the terms combat stress and posttraumatic stress syndrome were applied and posttraumatic stress disorder (PTSD) was used after the war. During the Gulf War (Operation Desert Storm), this symptom package became commonly identified as 'combat stress reaction.' At this time, some use the term 'combat operational stress' as well as 'combat operational stress reaction.' (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - combat stress reaction KW - posttraumatic stress disorder KW - combat exhaustion KW - 2006 KW - Combat Experience KW - Military Personnel KW - Posttraumatic Stress Disorder KW - Stress Reactions KW - War KW - Fatigue KW - 2006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-11904-010&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR T1 - A bond graph model of a full-suspension mountain bicycle rear shock. (Abstract) AU - Redfield, Robin AU - Sutela, Cory JO - Sports Engineering (International Sports Engineering Association) JF - Sports Engineering (International Sports Engineering Association) Y1 - 2006/// VL - 9 IS - 2 SP - 111 EP - 111 CY - ; SN - 13697072 N1 - Accession Number: SPHS-1036065; Author: Redfield, Robin: 1 Author: Sutela, Cory: 2 ; Author Affiliation: 1 Department of Engineering Mechanics, United States Air Force Academy, Colorado Springs, CO, USA: 2 SRAM Corporation, Colorado Springs, CO, USA; Conference: International Conference on the Engineering of Sport (6th : 2006 : Munich, Germany).; No. of Pages: 1; Language: English; Parent Item: SPHP62570; General Notes: Abstracts from the 6th International Conference on the Engineering of Sport, 10-14 July 2006, Olympic Hall, Munich, Germany. The full papers are published in Haake, S. and Moritz, E.F. (2006) The Engineering of Sport 6. Volume 1: Development for Sports. Chapter 3: Cycling.; Publication Type: Article; Material Type: PRINT; Update Code: 20061201; SIRC Article No.: S-1036065 KW - *ALL terrain cycling KW - *EQUIPMENT & supplies KW - *BICYCLES KW - *PHYSICS KW - DAMPING (Mechanics) KW - CALIBRATION KW - MOUNTAIN BIKING KW - SUSPENSION SYSTEM L2 - http://articles.sirc.ca/search.cfm?id=S-1036065 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=SPHS-1036065&site=ehost-live&scope=site UR - http://articles.sirc.ca/search.cfm?id=S-1036065 UR - http://www.sports-engineering.co.uk DP - EBSCOhost DB - s3h ER - TY - JOUR T1 - Head accelerations during soccer heading. (Abstract) AU - Self, Brian P. AU - Beck, Joseph AU - Schill, David AU - Eames, Colin AU - Knox, Ted AU - Plaga, John JO - Sports Engineering (International Sports Engineering Association) JF - Sports Engineering (International Sports Engineering Association) Y1 - 2006/// VL - 9 IS - 3 SP - 179 EP - 179 CY - ; SN - 13697072 N1 - Accession Number: SPHS-1040826; Author: Self, Brian P.: 1 Author: Beck, Joseph: 2 Author: Schill, David: 3 Author: Eames, Colin: 4 Author: Knox, Ted: 5 Author: Plaga, John: 6 ; Author Affiliation: 1 Engineering Mechanics, United States Air Force Academy, Colorado Springs, CO, USA: 2 Engineering Mechanics, United States Air Force Academy, Colorado Springs, CO, USA: 3 Engineering Mechanics, United States Air Force Academy, Colorado Springs, CO, USA: 4 Engineering Mechanics, United States Air Force Academy, Colorado Springs, CO, USA: 5 Wright Patterson Air Force Base, Ohio, USA: 6 Wright Patterson Air Force Base, Ohio, USA; Conference: International Conference on the Engineering of Sport (6th : 2006 : Munich, Germany).; No. of Pages: 1; Language: English; Parent Item: SPHP62570; General Notes: Abstracts from the 6th International Conference on the Engineering of Sport, 10-14 July 2006, Olympic Hall, Munich, Germany, Volume 2 -Developments for disciplines. Chapter 2 - Measurement techniques. The full papers are published in: hake, S. and Moritz, E.F. (2006) The Engineering of Sport 6. Volume 2: Developments for Disciplines. Springer, New York, ISBN 0-387-34678-3.; Publication Type: Article; Material Type: PRINT; Update Code: 20070301; SIRC Article No.: S-1040826 KW - *SOCCER KW - *SOCCER techniques KW - *SPEED KW - *NEUROMUSCULAR system KW - *WOUNDS & injuries KW - CALIBRATION KW - TESTING KW - IMPACT KW - RISK KW - HEADING L2 - http://articles.sirc.ca/search.cfm?id=S-1040826 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=SPHS-1040826&site=ehost-live&scope=site UR - http://articles.sirc.ca/search.cfm?id=S-1040826 UR - http://www.sports-engineering.co.uk DP - EBSCOhost DB - s3h ER - TY - CHAP ID - 2006-07018-006 AN - 2006-07018-006 AU - Hamilton, Eric AU - Cherniavsky, John ED - O'Neil, Harold F. ED - Perez, Ray S. ED - O'Neil, Harold F., (Ed) ED - Perez, Ray S., (Ed) T1 - Issues in Synchronous Versus Asynchronous E-learning Platforms. T2 - Web-based learning: Theory, research, and practice. Y1 - 2006/// SP - 87 EP - 105 CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-5100-3 SN - 9780805851007 N1 - Accession Number: 2006-07018-006. Partial author list: First Author & Affiliation: Hamilton, Eric; US Air Force Academy, CO, US. Release Date: 20061127. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-8058-5100-3, Hardcover; 9780805851007, Hardcover. Language: English. Major Descriptor: Computer Assisted Instruction; Internet; Learning Environment. Classification: Curriculum & Programs & Teaching Methods (3530). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 19. AB - Learning platforms and the communications they involve can be characterized along several dimensions. We present six here and a seventh (synchronicity) in the next section: (1) The control of learning activities: Who or what is in charge of the learning activities? (These include traditional answers of teacher or student, but also include underlying software platforms and agent systems and social structures that emerge through the systems interactivity.) (2) The communication bandwidth (electronic or otherwise). How much information can be transmitted and/or retained and in what time frame? (We also propose in the final section a pedagogical variant of this dimension, interactional bandwidth.) (3) The granularity at which information can be shared. The content level--symbols, information, knowledge--of the shared information. (4) The representational forms used to share knowledge. How is knowledge represented--text, graphics, animation, sound, video, or other means? (5) The persistence of knowledge representations in the learning environment. How readily available are artifacts produced by a teacher or student to the participants in the learning environment? (6) The pedagogical frameworks that characterize the learning environment. Is knowledge delivered, constructed individually, constructed socially? Does it scaffold and build procedural knowledge forms or higher order forms? (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - learning environment KW - E-learning KW - learning platforms KW - learning activities KW - knowledge representations KW - 2006 KW - Computer Assisted Instruction KW - Internet KW - Learning Environment KW - 2006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-07018-006&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-01007-005 AN - 2006-01007-005 AU - Smith, Suzanne D. T1 - Seat Vibration in Military Propeller Aircraft: Characterization, Exposure Assessment, and Mitigation. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2006/01// VL - 77 IS - 1 SP - 32 EP - 40 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Smith, Suzanne D., AFRL/HEPA, 2800 Q St., AFB, Wright-Patterson Air Force Base, OH, US, 45433-7947 N1 - Accession Number: 2006-01007-005. PMID: 16422451 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Smith, Suzanne D.; Air Force Research Laboratory, Human Effectiveness Directorate, Wright-Patterson Air Force Base, OH, US. Release Date: 20060428. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Grant Information: Smith, Suzanne D. Major Descriptor: Air Force Personnel; Aircraft; Psychophysical Measurement; Spatial Frequency; Vibration. Classification: Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 9. Issue Publication Date: Jan, 2006. AB - Introduction: There have been increasing reports of annoyance, fatigue, and even neck and back pain during prolonged operation of military propeller aircraft, where persistent multi-axis vibration occurs at higher frequencies beyond human whole-body resonance. This paper characterizes and assesses the higher frequency vibration transmitted to the occupants onboard these aircraft. Methods: Multi-axis accelerations were measured at the occupied seating surfaces onboard the WC/C-130J, C-130H3, and E-2C Hawkeye. The effects of the vibration were assessed in accordance with current international guidelines (ISO 2631-1:1997). The relative psychophysical effects of the frequency components and the effects of selected mitigation strategies were also investigated. Results: The accelerations associated with the blade passage frequency measured on the passenger seat pans located on the side of the fuselage near the propeller plane of the C-130J (102 Hz) and C-130H3 (68 Hz) were noteworthy (5.19 ± 1.72 ms-2 rms and 7.65 ± 0.71 ms-2 rms, respectively, in the lateral direction of the aircraft). The psychophysical results indicated that the higher frequency component would dominate the side passengers' perception of the vibration. Balancing the props significantly reduced the lower frequency propeller rotation vibration (17 Hz), but had little effect on the blade passage frequency vibration. Conclusions: The relationships among the frequency, vibration direction, and seat measurement sites were complex, challenging the development of seating systems and mitigation strategies. Psychophysical metrics could provide a tool for optimizing mitigation strategies, but the current international vibration standard may not provide optimum assessment methods for evaluating higher frequency operational exposures. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - seat vibration KW - military propeller aircraft KW - exposure assessment KW - whole body vibration KW - 2006 KW - Air Force Personnel KW - Aircraft KW - Psychophysical Measurement KW - Spatial Frequency KW - Vibration KW - 2006 U1 - Sponsor: Aeronautical Systems Center, Mobility Systems Wing, C-130 Systems Group, US. Recipients: Smith, Suzanne D. U1 - Sponsor: Air Force Flight Test Center, US. Recipients: Smith, Suzanne D. U1 - Sponsor: Air Force Reserve Command, US. Recipients: Smith, Suzanne D. U1 - Sponsor: USAF Air Mobility Battlelab, US. Recipients: Smith, Suzanne D. U1 - Sponsor: Martinsburg Air National Guard, 167 Airlift Wing, US. Recipients: Smith, Suzanne D. U1 - Sponsor: Naval Health Research Center, US. Recipients: Smith, Suzanne D. U1 - Sponsor: US Navy Pacific Fleet, Carrier Airborne Early Warning, VAW112 Golden Hawks Squadron, US. Recipients: Smith, Suzanne D. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-01007-005&site=ehost-live&scope=site UR - suzanne.smith@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-05338-005 AN - 2006-05338-005 AU - Gunzelmann, Glenn AU - Anderson, John R. T1 - Location matters: Why target location impacts performance in orientation tasks. JF - Memory & Cognition JO - Memory & Cognition JA - Mem Cognit Y1 - 2006/01// VL - 34 IS - 1 SP - 41 EP - 59 CY - US PB - Psychonomic Society SN - 0090-502X SN - 1532-5946 AD - Gunzelmann, Glenn, Air Force Research Laboratory-HEAS, 6030 South Kent Street, Mesa, AZ, US, 85212-6061 N1 - Accession Number: 2006-05338-005. PMID: 16686105 Partial author list: First Author & Affiliation: Gunzelmann, Glenn; Air Force Research Laboratory, Mesa, AZ, US. Other Publishers: Springer. Release Date: 20060522. Correction Date: 20160516. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Performance; Reaction Time; Spatial Orientation (Perception). Classification: Visual Perception (2323). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 19. Issue Publication Date: Jan, 2006. AB - This research explores human performance in a spatial orientation task. In three experiments, participants saw a target highlighted in a visual scene and were asked to locate it on a map of the space. Across all of the experiments, the target's location in the visual scene influenced the participants' response times. Generally, response times increased when the target was located farther away from the viewer, when the target was farther to one side or the other, and when more distractors were nearby. However, there were important exceptions to these findings, suggesting that participants encode the location of a target hierarchically, using different features of the space depending on the target's particular location. We conclude that participants perform such tasks by extracting a description from the egocentric view and then transforming that description to allow them to find the target on the map. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - human performance KW - spatial orientation task KW - response time KW - target location KW - 2006 KW - Performance KW - Reaction Time KW - Spatial Orientation (Perception) KW - 2006 U1 - Sponsor: Air Force Office of Scientific Research. Grant: F49620-99-1-0086. Recipients: No recipient indicated U1 - Sponsor: National Institute of Mental Health. Grant: 5-T32-MH19983. Other Details: National Research Service Award Training Grant to Lynne Reder. Recipients: No recipient indicated DO - 10.3758/BF03193385 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-05338-005&site=ehost-live&scope=site UR - glenn.gunzelmann@mesa.afmc.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-03796-004 AN - 2006-03796-004 AU - McCone, David AU - O'Donnell, Kathy T1 - Marriage and divorce trends for graduates of the U.S. Air Force Academy. JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2006/// VL - 18 IS - 1 SP - 61 EP - 75 CY - US PB - Lawrence Erlbaum SN - 0899-5605 SN - 1532-7876 AD - McCone, David, HQ USAFA/DFBL, USAF Academy, 2354 Fairchild Drive, 61-101B, CO, US, 80840 N1 - Accession Number: 2006-03796-004. Partial author list: First Author & Affiliation: McCone, David; Department of Behavioral Sciences and Leadership, United States Air Force Academy, CO, US. Other Publishers: Educational Publishing Foundation; Taylor & Francis. Release Date: 20060410. Correction Date: 20140811. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Divorce; Graduate Students; Marital Conflict; Marriage. Minor Descriptor: Distress; Trends. Classification: Marriage & Family (2950); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adolescence (13-17 yrs) (200); Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study; Followup Study; Quantitative Study. References Available: Y. Page Count: 15. Issue Publication Date: 2006. AB - Numerous data support the benefits of a stable marriage and document the negative consequences of marital distress and divorce. An estimated 40% to 50% of first marriages in the United States end in divorce (Bramlett & Mosher, 2002). Military members experience similar divorce rates overall but fewer divorces among officers (Karacaoglu, 2003). The marital status of U.S. Air Force Academy (USAFA) graduates was assessed and evaluated for unique risk factors for this population. Results indicate that USAFA graduates from class years 1990 through 2002 have a lower divorce rate than the general U.S. population. When assessed separately, there is no effect of the timing of the wedding or the type of spouse on marriage disruption rates. However, there is an interaction between these two risk factors that increases the probability of marriage disruption for those who marry other USAFA graduates within 6 months of graduation. Implications and further research endeavors are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - marriage KW - divorce KW - graduates KW - Air Force Academy KW - United States KW - marital distress KW - military personnel KW - 2006 KW - Air Force Personnel KW - Divorce KW - Graduate Students KW - Marital Conflict KW - Marriage KW - Distress KW - Trends KW - 2006 DO - 10.1207/s15327876mp1801_4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-03796-004&site=ehost-live&scope=site UR - David.McCone@USAFA.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-15947-006 AN - 2005-15947-006 AU - Ree, Malcolm James AU - Carretta, Thomas R. T1 - The Role of Measurement Error in Familiar Statistics. JF - Organizational Research Methods JO - Organizational Research Methods JA - Organ Res Methods Y1 - 2006/01// VL - 9 IS - 1 SP - 99 EP - 112 CY - US PB - Sage Publications SN - 1094-4281 SN - 1552-7425 AD - Ree, Malcolm James, Our Lady of the Lake University, 411 SW 24th Street, San Antonio, TX, US, 78207-4689 N1 - Accession Number: 2005-15947-006. Partial author list: First Author & Affiliation: Ree, Malcolm James; Our Lady of the Lake University, San Antonio, TX, US. Release Date: 20060227. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Analysis of Variance; Error of Measurement; Factor Analysis; Statistical Analysis. Minor Descriptor: Statistics. Classification: Statistics & Mathematics (2240). Population: Human (10). References Available: Y. Page Count: 14. Issue Publication Date: Jan, 2006. AB - Measurement error, or reliability, affects many common applications in statistics, such as correlation, partial correlation, analysis of variance, regression, factor analysis, and others. Despite its importance, the role of measurement error in these familiar statistical applications often receives little or no attention in textbooks and courses on statistics. The purpose of this article is to examine the role of reliability in familiar statistics and to show how ignoring the consequences of (less than perfect) reliability in common statistical techniques can lead to false conclusions and erroneous interpretation. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - measurement error KW - familiar statistics KW - statistical techniques KW - factor analysis KW - statistical applications KW - 2006 KW - Analysis of Variance KW - Error of Measurement KW - Factor Analysis KW - Statistical Analysis KW - Statistics KW - 2006 DO - 10.1177/1094428105283192 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-15947-006&site=ehost-live&scope=site UR - mree@satx.rr.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-05285-005 AN - 2006-05285-005 AU - Vidulich, Michael A. AU - Nelson, W. Todd AU - Bolia, Robert S. T1 - Speech-Based Controls in Simulated Air Battle Management. JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 2006/// VL - 16 IS - 2 SP - 197 EP - 213 CY - US PB - Lawrence Erlbaum SN - 1050-8414 SN - 1532-7108 AD - Vidulich, Michael A., AFRL/HECP, Wright-Patterson AFB, 2255 H Street, OH, US, 45433-7022 N1 - Accession Number: 2006-05285-005. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Vidulich, Michael A.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Other Publishers: Taylor & Francis. Release Date: 20060522. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Flight Instrumentation; Human Machine Systems; Simulation; Warnings. Minor Descriptor: Oral Communication. Classification: Human Factors Engineering (4010). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 17. Issue Publication Date: 2006. AB - This experiment evaluated speech-based controls as an aid for Airborne Warning and Control System (AWACS) operators performing simulated Battle Management Command and Control tasks. Twelve AWACS operators were required to track a package of fighter aircraft, receive verbal target changes, and pass the verbal changes to the lead fighter aircraft in a simulated battlefield air interdiction environment. The availability of speech controls for selected human-machine interface manipulation tasks was varied. The participants' mission performance, mental workload, opinions, and real-time control modality preferences were recorded. The results strongly supported the application of speech-based controls in the AWACS interface. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - speech based controls KW - simulated air battle management KW - airborne warning and control system KW - aircraft pilots KW - human machine interface KW - 2006 KW - Aircraft Pilots KW - Flight Instrumentation KW - Human Machine Systems KW - Simulation KW - Warnings KW - Oral Communication KW - 2006 DO - 10.1207/s15327108ijap1602_5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-05285-005&site=ehost-live&scope=site UR - michael.vidulich@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - BOOK ID - 2006-20280-000 AN - 2006-20280-000 AU - Cooke, Nancy J. AU - Pringle, Heather L. AU - Pedersen, Harry K. AU - Connor, Olena ED - Cooke, Nancy J. ED - Pringle, Heather L. ED - Pedersen, Harry K. ED - Connor, Olena T1 - Human factors of remotely operated vehicles. T3 - Advances in human performance and cognitive engineering research (Vol 7); ISSN: 1479-3601 (Print) Y1 - 2006/// CY - Amsterdam, Netherlands PB - Elsevier SN - 1479-3601 SN - 0-7623-1247-5 SN - 978-0-7623-1247-4 N1 - Accession Number: 2006-20280-000. Partial author list: First Author & Affiliation: Cooke, Nancy J.; Arizona State University, Mesa, AZ, US. Release Date: 20080623. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. ISBN: 0-7623-1247-5, Hardcover; 978-0-7623-1247-4, Hardcover. Language: English. Major Descriptor: Human Factors Engineering; Human Machine Systems Design; Robotics. Minor Descriptor: Automation; Military Personnel; Spatial Orientation (Perception); Vision. Classification: Human Factors Engineering (4010). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). Page Count: 388. AB - The purpose of this book is to highlight the pressing human factors issues associated with remotely operated vehicles and to showcase some of the state of the art human-oriented research and design that speaks to these issues. In this book the human components of the 'unmanned' system take center stage compared to the vehicle technology that often captures immediate attention. The commonly used terms, 'unmanned' or 'uninhabited,' are misleading in the context of remotely operated vehicles. In the case of Unmanned Aerial Vehicles (UAVs), there are many people involved on the ground ranging from those operating the vehicle from a ground control station, to the people coordinating multiple UAVs in an air operations or air traffic control center. The complexity of remote vehicle operations is also often underestimated and seen as a simple navigation task, neglecting the more complex functions associated with remote camera operations, data gathering, and even weapons activity. In summary, though these vehicles may be unmanned they are not unoperated, unsupervised, or uncontrolled. The role of the human in these systems is critical and raises a number of human factors research and design issues ranging from multiple vehicle control and adaptive automation to spatial disorientation and synthetic vision. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - human factors KW - remotely operated vehicles KW - military & civilian sectors KW - automation KW - spatial disorientation KW - synthetic vision KW - 2006 KW - Human Factors Engineering KW - Human Machine Systems Design KW - Robotics KW - Automation KW - Military Personnel KW - Spatial Orientation (Perception) KW - Vision KW - 2006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-20280-000&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Trinkle, Dallas R. AU - Woodward, Christopher T1 - The Chemistry of Deformation: How Solutes Soften Pure Metals. JO - Science JF - Science Y1 - 2005/12/09/ VL - 310 IS - 5754 M3 - Article SP - 1665 EP - 1667 SN - 00368075 AB - Solutes have been added to strengthen elemental metals, generating usable materials for millennia; in the 1960s, solutes were found to also soften metals. Despite the empirical correlation between the "electron number" of the solute and the change in strength of the material to which it is added, the mechanism responsible for softening is poorly understood. Using state-of-the-art quantum-mechanical methods, we studied the direct interaction of transition-metal solutes with dislocations in molybdenum. The interaction increases dramatically with increasing electron number and strongly influences the mechanisms responsible for plasticity in these materials. Our quantitative model explains solution softening of metals by using changes in energy and stress scales of plasticity from solutes. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Metals KW - Molybdenum KW - Cohesion KW - Inorganic chemistry KW - Deformations (Mechanics) KW - Plasticity N1 - Accession Number: 19190598; Trinkle, Dallas R. 1; Email Address: dallas.trinkle@wpafb.af.mil; Woodward, Christopher 1; Affiliations: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH 45433-7817, USA.; Issue Info: 12/9/2005, Vol. 310 Issue 5754, p1665; Thesaurus Term: Metals; Thesaurus Term: Molybdenum; Thesaurus Term: Cohesion; Thesaurus Term: Inorganic chemistry; Thesaurus Term: Deformations (Mechanics); Subject Term: Plasticity; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 3p; Illustrations: 2 Color Photographs, 2 Graphs; Document Type: Article; Full Text Word Count: 2908 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=19190598&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Fullerton, Richard T1 - The Future: Oil, America, and the Air Force. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2005///Winter2005 Y1 - 2005///Winter2005 VL - 19 IS - 4 M3 - Article SP - 27 EP - 31 PB - Superintendent of Documents SN - 1555385X AB - The article focuses on the role of oil industry and its implications in modern conflicts and tension in the U.S. The perception that oil shortage would bring chaos is unrelated and far from the reality that the world recoverable oil can still supply for the rest of the twentieth century. The oil embargo does not affect the economy of the country but the economic and oil policies are partly to blamed. Unless there is no substitute for oil, military aircraft would still be dependent on oil. KW - PETROLEUM law & legislation KW - SUPPLY & demand KW - ENERGY shortages KW - ECONOMIC policy KW - UNITED States N1 - Accession Number: 19222872; Source Information: Winter2005, Vol. 19 Issue 4, p27; Subject Term: PETROLEUM law & legislation; Subject Term: SUPPLY & demand; Subject Term: ENERGY shortages; Subject Term: ECONOMIC policy; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 5p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19222872&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - AU - Cain, A. C.1 T1 - Contesting empires: opposition, promotion, and slavery. JO - Choice: Current Reviews for Academic Libraries JF - Choice: Current Reviews for Academic Libraries J1 - Choice: Current Reviews for Academic Libraries PY - 2005/12// Y1 - 2005/12// VL - 43 IS - 4 CP - 4 M3 - Book Review SP - 713 EP - 713 SN - 00094978 AB - The article reviews the book "Contesting Empires: Opposition, Promotion, and Slavery," by Jonathan Hart. KW - Nonfiction KW - Imperialism KW - Hart, Jonathan KW - Contesting Empires: Opposition, Promotion & Slavery (Book) N1 - Accession Number: 19225763; Authors: Cain, A. C. 1; Affiliations: 1: United States Air Force, Air University; Subject: Contesting Empires: Opposition, Promotion & Slavery (Book); Subject: Hart, Jonathan; Subject: Imperialism; Subject: Nonfiction; Number of Pages: 1/6p; Record Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=19225763&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - Emond, Claude AU - Michalek, Joel E. AU - Birnbaum, Linda S. AU - DeVito, Michael J. T1 - Comparison of the Use of a Physiologically Based Pharmacokinetic Model and a Classical Pharmacokinetic Model for Dioxin Exposure Assessments. JO - Environmental Health Perspectives JF - Environmental Health Perspectives Y1 - 2005/12// VL - 113 IS - 12 M3 - Article SP - 1666 PB - Superintendent of Documents SN - 00916765 AB - In epidemiologic studies, exposure assessments of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) assume a fixed elimination rate. Recent data suggest a dose-dependent elimination rate for TCDD. A physiologically based pharmacokinetic (PBPK) model, which uses a body-burden-dependent elimination rate, was developed previously in rodents to describe the pharmacokinetics of TCDD and has been extrapolated to human exposure for this study. Optimizations were performed using data from a random selection of veterans from the Ranch Hand cohort and data from a human volunteer who was exposed to TCDD. Assessment of this PBPK model used additional data from the Ranch Hand cohort and a clinical report of two women exposed to TCDD. This PBPK model suggests that previous exposure assessments may have significantly underestimated peak blood concentrations, resulting in potential exposure misclassifications. Application of a PBPK model that incorporates an inducible elimination of TCDD may improve the exposure assessments in epidemiologic studies of TCDD. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Health Perspectives is the property of Superintendent of Documents and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Dioxins KW - Tetrachlorodibenzodioxin KW - Polychlorinated dibenzodioxins KW - Agricultural chemicals KW - Agriculture KW - Pharmacology KW - Pharmacokinetics KW - Chemical kinetics KW - Cohort analysis KW - dioxin KW - epidemiology KW - PBPK KW - pharmacokinetic KW - physiologically based pharmacokinetic model KW - Ranch Hand KW - risk assessment N1 - Accession Number: 19030630; Emond, Claude 1,2; Michalek, Joel E. 3; Birnbaum, Linda S. 2; DeVito, Michael J. 2; Email Address: devito.mike@epa.gov; Affiliations: 1: National Research Council, National Academy of Sciences, Washington, DC, USA; 2: Pharmacokinetics Branch, Environmental Toxicology Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA; 3: Air Force Research Laboratory, Brooks City-Base, Texas, USA; Issue Info: Dec2005, Vol. 113 Issue 12, p1666; Thesaurus Term: Dioxins; Thesaurus Term: Tetrachlorodibenzodioxin; Thesaurus Term: Polychlorinated dibenzodioxins; Thesaurus Term: Agricultural chemicals; Thesaurus Term: Agriculture; Thesaurus Term: Pharmacology; Subject Term: Pharmacokinetics; Subject Term: Chemical kinetics; Subject Term: Cohort analysis; Author-Supplied Keyword: dioxin; Author-Supplied Keyword: epidemiology; Author-Supplied Keyword: PBPK; Author-Supplied Keyword: pharmacokinetic; Author-Supplied Keyword: physiologically based pharmacokinetic model; Author-Supplied Keyword: Ranch Hand; Author-Supplied Keyword: risk assessment; NAICS/Industry Codes: 325320 Pesticide and Other Agricultural Chemical Manufacturing; NAICS/Industry Codes: 418390 Agricultural chemical and other farm supplies merchant wholesalers; NAICS/Industry Codes: 424910 Farm Supplies Merchant Wholesalers; Number of Pages: 9p; Illustrations: 2 Color Photographs, 1 Chart; Document Type: Article L3 - 10.1289/ehp.8016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=19030630&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Ulander, L. M. H. AU - Lundberg, M. AU - Pierson, W. AU - Gustavsson, A. T1 - Change detection for low-frequency SAR ground surveillance. JO - IEE Proceedings -- Radar, Sonar & Navigation JF - IEE Proceedings -- Radar, Sonar & Navigation Y1 - 2005/12// VL - 152 IS - 6 M3 - Article SP - 413 EP - 420 SN - 13502395 AB - Change detection using ultra-wideband synthetic aperture radar (SAR) images in the low end of the VHF band is shown to provide excellent performance for detection of vehicle-sized objects in forest concealment. Two different change detection algorithms are discussed and their performance evaluated. The two algorithms are based on similar statistical hypothesis testing, but differ in that one operates on complex (coherent change detection) whereas the other uses magnitude (incoherent change detection) image data. Algorithm evaluation is performed using radar data acquired with the airborne CARABAS-II SAR in northern Sweden. The data were collected during a change detection experiment with concealed vehicles in boreal forests (stand volume ca. 100 m3/ha). Results show that coherent change detection gives slightly better performance using full spatial resolution of the images, whereas the incoherent change detection gives better performance when spatial averaging (2×2 resolution cells) is included. A comparison with detecting vehicles using only single-pass images shows an increase of false alarms of one to two orders of magnitude at the same probability of detection. [ABSTRACT FROM AUTHOR] AB - Copyright of IEE Proceedings -- Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STATISTICAL hypothesis testing KW - SURVEILLANCE radar KW - INSTRUMENT landing systems KW - RADAR defense networks KW - EXPERIMENTAL design N1 - Accession Number: 19007481; Ulander, L. M. H. 1; Email Address: ulander@foi.se; Lundberg, M. 1; Pierson, W. 2; Gustavsson, A. 1; Affiliations: 1: Swedish Defence Research Agency (FOI), Department of Radar Systems, PO Box 1165, SE-581 11, Linköping, Sweden; 2: Wright Patterson Air Force Base, US Air Force Research Laboratory, Dayton, OH 45433, USA; Issue Info: Dec2005, Vol. 152 Issue 6, p413; Thesaurus Term: STATISTICAL hypothesis testing; Subject Term: SURVEILLANCE radar; Subject Term: INSTRUMENT landing systems; Subject Term: RADAR defense networks; Subject Term: EXPERIMENTAL design; NAICS/Industry Codes: 517919 All Other Telecommunications; Number of Pages: 8p; Document Type: Article L3 - 10.1049/ip-rsn:20050002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=19007481&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Krishna, Sanjay AU - Oh-Hyun Kwon AU - Hayat, Majeed M. T1 - Theoretical Investigation of Quantum-Dot Avalanche Photodiodes for Mid-infrared Applications. JO - IEEE Journal of Quantum Electronics JF - IEEE Journal of Quantum Electronics J1 - IEEE Journal of Quantum Electronics PY - 2005/12// Y1 - 2005/12// VL - 41 IS - 12 M3 - Article SP - 1468 EP - 1473 SN - 00189197 AB - A novel midinfrared sensor, called the quantum-dot avalanche photodiode (QDAP), is proposed which is expected to have improved signal-to-noise ratio (SNR) in the presence of Johnson noise over its quantum-dot (QD) counterpart In the QDAP, an intersubband QD detector is coupled with a thin, low-noise GaAs avalanche layer through a tunnel barrier. The avalanche layer provides the necessary photocurrent gain required to overcome Johnson noise and nearly achieve the dark-current-limited SNR of the QD detector. In the proposed three-terminal device, the applied biases of the QDsdetector and the avalanche-photodiode sections of the QDAP are controlled separately. This feature permits the control of the QDs responsivity and dark current independently of the operating avalanche gain, thereby allowing the optimization of the avalanche multiplication factor to maximize the photocurrent's SNR. Notably, a heterojunction potential-barrier layer can also be utilized to further improve the SNR. For example, when the standard deviation of the Johnson noise is four times greater than the dark current, calculations show that the SNR enhancement offered by an avalanche multiplication factor of S results in relaxing the cooling requirement from 20 to 80 K. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Journal of Quantum Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTODIODES KW - QUANTUM electronics KW - SEMICONDUCTOR diodes KW - AVALANCHE diodes KW - ANALYSIS of variance KW - DETECTORS N1 - Accession Number: 19160334; Source Information: Dec2005, Vol. 41 Issue 12, p1468; Subject Term: PHOTODIODES; Subject Term: QUANTUM electronics; Subject Term: SEMICONDUCTOR diodes; Subject Term: AVALANCHE diodes; Subject Term: ANALYSIS of variance; Subject Term: DETECTORS; Subject Term: ; Number of Pages: 6p; ; Document Type: Article; L3 - 10.1109/JQE.2005.858791 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19160334&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Balster, Eric J. AU - Zheng, Yuan F. AU - Ewing, Robert L. T1 - Feature-Based Wavelet Shrinkage Algorithm for Image Denoising. JO - IEEE Transactions on Image Processing JF - IEEE Transactions on Image Processing Y1 - 2005/12// VL - 14 IS - 12 M3 - Article SP - 2024 EP - 2039 SN - 10577149 AB - A selective wavelet shrinkage algorithm for digital image denoising is presented. The performance of this method is an improvement upon other methods proposed in the literature and is algorithmically simple for large computational savings. The improved performance and computational speed of the proposed wavelet shrinkage algorithm is presented and experimentally compared with established methods. The denoising method incorporated in the proposed algorithm involves a two-threshold validation process for real-time selection of wavelet coefficients. The two-threshold criteria selects wavelet coefficients based on their absolute value, spatial regularity, and regularity across multiresolution scales. The proposed algorithm takes image features into consideration in the selection process. Statistically, most images have regular features resulting in connected subband coefficients. Therefore, the resulting subbands of wavelet transformed images in large part do not contain isolated coefficients. In the proposed algorithm, coefficients are selected due to their magnitude, and only a subset of those selected coefficients which exhibit a spatially regular behavior remain for image reconstruction. Therefore, two thresholds are used in the coefficient selection process. The first threshold is used to distinguish coefficients of large magnitude and the second is used to distinguish coefficients of spatial regularity. The performance of the proposed wavelet denoising technique is an improvement upon several other established wavelet denoising techniques, as well as being computationally efficient to facilitate real-time image-processing applications. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Image Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - TIME series analysis KW - CLUSTER analysis (Statistics) KW - WAVELETS (Mathematics) KW - MEASURE algebras KW - SPATIAL analysis (Statistics) KW - Image denoising KW - selective wavelet shrinkage KW - two-threshold criteria N1 - Accession Number: 19160314; Balster, Eric J. 1; Zheng, Yuan F. 2; Ewing, Robert L. 1; Affiliations: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433-7334 USA.; 2: Ohio State University, Columbus, OH 43210 USA.; Issue Info: Dec2005, Vol. 14 Issue 12, p2024; Thesaurus Term: ALGORITHMS; Thesaurus Term: TIME series analysis; Thesaurus Term: CLUSTER analysis (Statistics); Subject Term: WAVELETS (Mathematics); Subject Term: MEASURE algebras; Subject Term: SPATIAL analysis (Statistics); Author-Supplied Keyword: Image denoising; Author-Supplied Keyword: selective wavelet shrinkage; Author-Supplied Keyword: two-threshold criteria; Number of Pages: 16p; Document Type: Article L3 - 10.1109/TIP.2005.859385 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=19160314&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Garratt, Rod AU - Parco, James E. AU - Cheng-Zhong Qin AU - Rapoport, Amnon T1 - POTENTIAL MAXIMIZATION AND COALITION GOVERNMENT FORMATION. JO - International Game Theory Review JF - International Game Theory Review Y1 - 2005/12// VL - 7 IS - 4 M3 - Article SP - 407 EP - 429 PB - World Scientific Publishing Company SN - 02191989 AB - A model of coalition government formation is presented in which inefficient, non-minimal winning coalitions may form in Nash equilibrium. Predictions for five games are presented and tested experimentally. The experimental data support potential maximization as a refinement of Nash equilibrium. In particular, the data support the prediction that non-minimal winning coalitions occur when the distance between policy positions of the parties is small relative to the value of forming the government. These conditions hold in games 1, 3, 4 and 5, where subjects played their unique potential-maximizing strategies 91, 52, 82 and 84 percent of the time, respectively. In the remaining game (Game 2) experimental data support the prediction of a minimal winning coalition. Players A and B played their unique potential-maximizing strategies 84 and 86 percent of the time, respectively, and the predicted minimal-winning government formed 92 percent of the time (all strategy choices for player C conform with potential maximization in Game 2). In Games 1, 2, 4 and 5 over 98 percent of the observed Nash equilibrium outcomes were those predicted by potential maximization. Other solution concepts including iterated elimination of weakly dominated strategies and strong/coalition-proof Nash equilibrium are also tested. [ABSTRACT FROM AUTHOR] AB - Copyright of International Game Theory Review is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EQUILIBRIUM (Economics) KW - GAME theory KW - MATHEMATICAL models KW - MATHEMATICS KW - COALITION governments KW - POLITICAL parties KW - ITERATIVE methods (Mathematics) KW - Coalition formation KW - experimental study KW - JEL Classification: C72 KW - JEL Classification: C78 KW - JEL Classification: D72 KW - minimal winning KW - Nash equilibrium refinements KW - potential maximization N1 - Accession Number: 19206613; Garratt, Rod 1; Email Address: garratt@econ.ucsb.edu; Parco, James E. 2; Cheng-Zhong Qin 1; Rapoport, Amnon 3,4; Affiliations: 1: University of California, Santa Barbara, Department of Economics, Santa Barbara, CA 93106; 2: United States Air Force Academy, Department of Management, Colorado Springs, CO 80840; 3: University of Arizona, Department of Management and Policy, Tucson, AZ 85721; 4: Department of Economics, Hong Kong University of Science and Technology; Issue Info: Dec2005, Vol. 7 Issue 4, p407; Thesaurus Term: EQUILIBRIUM (Economics); Thesaurus Term: GAME theory; Thesaurus Term: MATHEMATICAL models; Thesaurus Term: MATHEMATICS; Subject Term: COALITION governments; Subject Term: POLITICAL parties; Subject Term: ITERATIVE methods (Mathematics); Author-Supplied Keyword: Coalition formation; Author-Supplied Keyword: experimental study; Author-Supplied Keyword: JEL Classification: C72; Author-Supplied Keyword: JEL Classification: C78; Author-Supplied Keyword: JEL Classification: D72; Author-Supplied Keyword: minimal winning; Author-Supplied Keyword: Nash equilibrium refinements; Author-Supplied Keyword: potential maximization; NAICS/Industry Codes: 813940 Political Organizations; Number of Pages: 23p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=19206613&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Newman, Mark AU - Hatfield, Kirk AU - Hayworth, Joel AU - Rao, P.S.C. AU - Stauffer, Tom T1 - A hybrid method for inverse characterization of subsurface contaminant flux JO - Journal of Contaminant Hydrology JF - Journal of Contaminant Hydrology Y1 - 2005/12// VL - 81 IS - 1-4 M3 - Article SP - 34 EP - 62 SN - 01697722 AB - Abstract: The methods presented in this work provide a potential tool for characterizing contaminant source zones in terms of mass flux. The problem was conceptualized by considering contaminant transport through a vertical “flux plane” located between a source zone and a downgradient region where contaminant concentrations were measured. The goal was to develop a robust method capable of providing a statement of the magnitude and uncertainty associated with estimated contaminant mass flux values. In order to estimate the magnitude and transverse spatial distribution of mass flux through a plane, the problem was considered in an optimization framework. Two numerical optimization techniques were applied, simulated annealing (SA) and minimum relative entropy (MRE). The capabilities of the flux plane model and the numerical solution techniques were evaluated using data from a numerically generated test problem and a nonreactive tracer experiment performed in a three-dimensional aquifer model. Results demonstrate that SA is more robust and converges more quickly than MRE. However, SA is not capable of providing an estimate of the uncertainty associated with the simulated flux values. In contrast, MRE is not as robust as SA, but once in the neighborhood of the optimal solution, it is quite effective as a tool for inferring mass flux probability density functions, expected flux values, and confidence limits. A hybrid (SA-MRE) solution technique was developed in order to take advantage of the robust solution capabilities of SA and the uncertainty estimation capabilities of MRE. The coupled technique provided probability density functions and confidence intervals that would not have been available from an independent SA algorithm and they were obtained more efficiently than if provided by an independent MRE algorithm. [Copyright &y& Elsevier] AB - Copyright of Journal of Contaminant Hydrology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Aquifers KW - Simulated annealing (Mathematics) KW - Combinatorial optimization KW - Entropy KW - Contaminant KW - Groundwater KW - Inverse problem KW - Mass flux KW - Minimum relative entropy KW - Simulated annealing N1 - Accession Number: 19058120; Newman, Mark 1; Email Address: markn@grove.ufl.edu; Hatfield, Kirk 1; Hayworth, Joel 2; Rao, P.S.C. 3; Stauffer, Tom 4; Affiliations: 1: Department of Civil and Coastal Engineering, University of Florida, Gainesville, FL, United States; 2: Hayworth Engineering Science, Panama City, FL, United States; 3: School of Civil Engineering, Purdue University, West Lafayette, IN, United States; 4: Air Force Research Laboratory, Tyndall AFB, FL, United States; Issue Info: Dec2005, Vol. 81 Issue 1-4, p34; Thesaurus Term: Aquifers; Subject Term: Simulated annealing (Mathematics); Subject Term: Combinatorial optimization; Subject Term: Entropy; Author-Supplied Keyword: Contaminant; Author-Supplied Keyword: Groundwater; Author-Supplied Keyword: Inverse problem; Author-Supplied Keyword: Mass flux; Author-Supplied Keyword: Minimum relative entropy; Author-Supplied Keyword: Simulated annealing; Number of Pages: 29p; Document Type: Article L3 - 10.1016/j.jconhyd.2005.07.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=19058120&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Interference from audio distracters during speechreading. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2005/12// VL - 118 IS - 6 M3 - Article SP - 3889 EP - 3902 SN - 00014966 AB - Although many audio-visual speech experiments have focused on situations where the presence of an incongruent visual speech signal influences the perceived utterance heard by an observer, there are also documented examples of a related effect in which the presence of an incongruent audio speech signal influences the perceived utterance seen by an observer. This study examined the effects that different distracting audio signals had on performance in a color and number keyword speechreading task. When the distracting sound was noise, time-reversed speech, or continuous speech, it had no effect on speechreading. However, when the distracting audio signal consisted of speech that started at the same time as the visual stimulus, speechreading performance was substantially degraded. This degradation did not depend on the semantic similarity between the target and masker speech, but it was substantially reduced when the onset of the audio speech was shifted relative to that of the visual stimulus. Overall, these results suggest that visual speech perception is impaired by the presence of a simultaneous mismatched audio speech signal, but that other types of audio distracters have little effect on speechreading performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIPREADING KW - SPEECH perception KW - SPEECH KW - COMMUNICATION KW - AUDIO communication KW - INTERFERENCE (Sound) N1 - Accession Number: 20263674; Brungart, Douglas S. 1; Email Address: douglas.brungart@wpafb.af.mil; Simpson, Brian D. 1; Affiliations: 1 : Air Force Research Laboratory, WPAFB, Ohio 45433; Source Info: Dec2005, Vol. 118 Issue 6, p3889; Subject Term: LIPREADING; Subject Term: SPEECH perception; Subject Term: SPEECH; Subject Term: COMMUNICATION; Subject Term: AUDIO communication; Subject Term: INTERFERENCE (Sound); Number of Pages: 14p; Illustrations: 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1121/1.2126932 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=20263674&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR AU - Mastroianni, George R. T1 - Occupations, Cultures, and Leadership in the Army and Air Force. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College J1 - Parameters: U.S. Army War College PY - 2005///Winter2005-2006 Y1 - 2005///Winter2005-2006 VL - 35 IS - 4 M3 - Article SP - 76 EP - 90 SN - 00311723 AB - The article reports that the recent separation of the Air Force from the Army, coupled with the rapid rise of the Air Force as a powerful, independent institution since World War II, offers an opportunity to explore the organizational cultures of these two services in the United States, and to understand the implications of culture on leadership styles in each of the services. In the Army, the officers send the enlisted soldiers out to fight, while in the Air Force, the enlisted folks stay behind and the officers go out to do the job. The roles of officers, Non Commissioned Officers (NCOs), and enlisted members, and the relationships among them vary across the services. In the ground forces, NCOs are considered the backbone of the service. In the Air Force, many pilots depend on vital maintenance and logistical support from ground personnel, but relationships between officers and enlisted in the Air Force seem to be necessarily different from such relationships in the Army and Marine. KW - UNITED States -- Armed Forces KW - AIR defenses -- United States KW - PILOTS & pilotage KW - LOGISTICS KW - ARMY officers KW - MAINTENANCE KW - UNITED States N1 - Accession Number: 19222609; Source Information: Winter2005-2006, Vol. 35 Issue 4, p76; Subject Term: UNITED States -- Armed Forces; Subject Term: AIR defenses -- United States; Subject Term: PILOTS & pilotage; Subject Term: LOGISTICS; Subject Term: ARMY officers; Subject Term: MAINTENANCE; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 15p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19222609&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 106399388 T1 - College coaches corner. Learning from each other: missed training days. AU - Hedrick A AU - Bennett S AU - Rodgers R Y1 - 2005/12// N1 - Accession Number: 106399388. Language: English. Entry Date: 20060224. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletic Training KW - Athletes, College KW - Appointments and Schedules KW - Coaches, Athletic SP - 87 EP - 89 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 27 IS - 6 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. AB - You spend a great deal of time carefully planning the strength and conditioning programs for your athletes. Each cycle, and each day within that cycle, is designed to ultimately bring about optimal performance capabilities. How do you react when athletes miss assigned workouts because sport coach(es) unexpectedly alter plans at the last moment (i.e., change practice schedule, call a team meeting, plan team-building activities)? We asked our panel of coaches how they respond in this situation. SN - 1524-1602 AD - US Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106399388&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Learning From Each Other: Missed Training Days. AU - Hedrick, Allen JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) Y1 - 2005/12// VL - 27 IS - 6 SP - 87 EP - 89 SN - 15241602 N1 - Accession Number: 19347175; Author: Hedrick, Allen: 1 email: ARHedrick@Adelphia.net. ; Author Affiliation: 1 United States Air Force Academy, Colorado Springs, Colorado; No. of Pages: 3; Language: English; Publication Type: Article; Update Code: 20060107 N2 - You spend a great deal of time carefully planning the strength and conditioning programs for your athletes. Each cycle, and each day within that cycle, is designed to ultimately bring about optimal performance capabilities. How do you react when athletes miss assigned workouts because sport coach(es) unexpectedly alter plans at the last moment (i.e., change practice schedule, call a team meeting, plan team-building activities)? We asked our panel of coaches how they respond in this situation. ABSTRACT FROM AUTHOR KW - *PHYSICAL training & conditioning KW - *ATHLETIC trainers KW - *ATHLETES KW - *EXERCISE KW - *COACHES (Athletics) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=19347175&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Braydich-Stolle, Laura AU - Hussain, Saber AU - Schlager, John J. AU - Hofmann, Marie-Claude T1 - In Vitro Cytotoxicity of Nanoparticles in Mammalian Germline Stem Cells. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 2005/12// VL - 88 IS - 2 M3 - Article SP - 412 EP - 419 PB - Oxford University Press / USA SN - 10966080 AB - Gametogenesis is a complex biological process that is particularly sensitive to environmental insults such as chemicals. Many chemicals have a negative impact on the germline, either by directly affecting the germ cells, or indirectly through their action on the somatic nursing cells. Ultimately, these effects can inhibit fertility, and they may have negative consequences for the development of the offspring. Recently, nanomaterials such as nanotubes, nanowires, fullerene derivatives (buckyballs), and quantum dots have received enormous national attention in the creation of new types of analytical tools for biotechnology and the life sciences. Despite the wide application of nanomaterials, there is a serious lack of information concerning their impact on human health and the environment. Thus, there are limited studies available on toxicity of nanoparticles for risk assessment of nanomaterials. The purpose of this study was to assess the suitability of a mouse spermatogonial stem cell line as a model to assess nanotoxicity in the male germline in vitro. The effects of different types of nanoparticles on these cells were evaluated by light microscopy, and by cell proliferation and standard cytotoxicity assays. Our results demonstrate a concentration-dependent toxicity for all types of particles tested, whereas the corresponding soluble salts had no significant effect. Silver nanoparticles were the most toxic while molybdenum trioxide (MoO3) nanoparticles were the least toxic. Our results suggest that this cell line provides a valuable model with which to assess the cytotoxicity of nanoparticles in the germ line in vitro. [ABSTRACT FROM AUTHOR] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Germ cells KW - Nanoparticles KW - Toxicity testing -- In vitro KW - Mice as laboratory animals KW - Cell lines KW - Stem cells KW - cell line KW - nanoparticles KW - spermatogonia KW - stem cells KW - toxicity N1 - Accession Number: 20605798; Braydich-Stolle, Laura 1; Email Address: Marie-Claude.Hofmann@notes.udayton.edu; Hussain, Saber 2; Schlager, John J. 2; Hofmann, Marie-Claude 1; Email Address: Marie-Claude.Hofmann@notes.udayton.edu; Affiliations: 1: Department of Biology, The University of Dayton, Dayton, Ohio 45469; 2: Applied Technology, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433; Issue Info: Dec2005, Vol. 88 Issue 2, p412; Thesaurus Term: Germ cells; Subject Term: Nanoparticles; Subject Term: Toxicity testing -- In vitro; Subject Term: Mice as laboratory animals; Subject Term: Cell lines; Subject Term: Stem cells; Author-Supplied Keyword: cell line; Author-Supplied Keyword: nanoparticles; Author-Supplied Keyword: spermatogonia; Author-Supplied Keyword: stem cells; Author-Supplied Keyword: toxicity; NAICS/Industry Codes: 112990 All Other Animal Production; NAICS/Industry Codes: 325413 In-Vitro Diagnostic Substance Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1093/toxsci/kfi256 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=20605798&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2006-08535-003 AN - 2006-08535-003 AU - Schmidt, Norman B. AU - Kotov, Roman AU - Lerew, Darin R. AU - Joiner, Thomas E. Jr. AU - Ialongo, Nicholas S. T1 - Evaluating Latent Discontinuity in Cognitive Vulnerability to Panic: A Taxometric Investigation. JF - Cognitive Therapy and Research JO - Cognitive Therapy and Research JA - Cognit Ther Res Y1 - 2005/12// VL - 29 IS - 6 SP - 673 EP - 690 CY - Germany PB - Springer SN - 0147-5916 SN - 1573-2819 AD - Schmidt, Norman B., Department of Psychology, Florida State University, Tallahassee, FL, US, 32306 N1 - Accession Number: 2006-08535-003. Partial author list: First Author & Affiliation: Schmidt, Norman B.; Ohio State University, Columbus, OH, US. Release Date: 20060717. Correction Date: 20120827. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Anxiety; Cognitive Psychology; Panic; Psychopathology; Susceptibility (Disorders). Minor Descriptor: Evaluation; Symptoms. Classification: Neuroses & Anxiety Disorders (3215). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Body Vigilance Questionnaire; State Trait Anxiety Inventory; Beck Depression Inventory DOI: 10.1037/t00741-000; Anxiety Sensitivity Index DOI: 10.1037/t00033-000; Body Sensations Questionnaire DOI: 10.1037/t04391-000. Methodology: Empirical Study; Longitudinal Study; Prospective Study; Quantitative Study. References Available: Y. Page Count: 18. Issue Publication Date: Dec, 2005. AB - Taxometrics is a statistical tool that can be used to discern psychopathological categories from continua. In this study, taxometric analyses were conducted to determine whether a psychopathological category (or taxon) underlies a cognitive vulnerability to panic (i.e., fear of anxiety symptoms and body vigilance). The construct was operationalized with 3 variables: the Anxiety Sensitivity Index, the Body Sensations Questionnaire, and the Body Vigilance Scale. The test was performed in a large nonclinical sample (N = 1,224). Analyses and consistency tests support the taxonic conjecture for the existence of a latent cognitive vulnerability taxon with a base rate of about 18% in this population. Moreover, tests of the taxon's utility indicated that taxon membership has incremental validity in predicting future panic attacks. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - latent discontinuity KW - cognitive vulnerability KW - panic KW - taxometrics KW - psychopathology KW - anxiety KW - 2005 KW - Anxiety KW - Cognitive Psychology KW - Panic KW - Psychopathology KW - Susceptibility (Disorders) KW - Evaluation KW - Symptoms KW - 2005 DO - 10.1007/s10608-005-9632-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-08535-003&site=ehost-live&scope=site UR - schmidt@psy.fsu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-14601-002 AN - 2005-14601-002 AU - Hirschfeld, Robert R. AU - Jordan, Mark H. AU - Feild, Hubert S. AU - Giles, William F. AU - Armenakis, Achilles A. T1 - Teams' female representation and perceived potency as inputs to team outcomes in a predominantly male field setting. JF - Personnel Psychology JO - Personnel Psychology JA - Pers Psychol Y1 - 2005///Win 2005 VL - 58 IS - 4 SP - 893 EP - 924 CY - United Kingdom PB - Blackwell Publishing SN - 0031-5826 SN - 1744-6570 AD - Hirschfeld, Robert R., Department of Management, Terry College of Business, University of Georgia, Athens, GA, US, 30602-6256 N1 - Accession Number: 2005-14601-002. Partial author list: First Author & Affiliation: Hirschfeld, Robert R.; Department of Management, Terry College of Business, University of Georgia, Athens, GA, US. Other Publishers: Wiley-Blackwell Publishing Ltd. Release Date: 20060103. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Group Performance; Human Females; Military Personnel; Sex Roles; Teams. Classification: Military Psychology (3800); Group & Interpersonal Processes (3020). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 32. Issue Publication Date: Win 2005. AB - We developed a team-level temporal model and tested it with data from 92 newly formed teams in a naturalistic military setting where females were a distinct minority in all teams. Contrary to what is posited by theory on customary perceptions of females' capabilities and gender-role congruence, a higher female proportion within teams did not adversely influence teams' early perceived potency, later social cohesion, or observers' assessments of teamwork. Consistent with theory regarding gender and abilities, however, a higher female proportion within teams contributed to better team problem solving but led to slightly worse team results on physically demanding tasks. In addition, teams' early perceived potency contributed positively to early task proficiency and later social cohesion. Furthermore, teams' social cohesion contributed positively to externally observed teamwork while controlling for task proficiency. We discuss implications of these findings for theory and practice. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - team outcomes KW - female representation KW - military personnel KW - gender roles KW - social cohesion KW - problem solving KW - 2005 KW - Group Performance KW - Human Females KW - Military Personnel KW - Sex Roles KW - Teams KW - 2005 DO - 10.1111/j.1744-6570.2005.00892.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-14601-002&site=ehost-live&scope=site UR - rhirschf@uga.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Fraga, Carlos G. AU - Corley, Cynthia A. T1 - The chemometric resolution and quantification of overlapped peaks form comprehensive two-dimensional liquid chromatography JO - Journal of Chromatography A JF - Journal of Chromatography A Y1 - 2005/11/25/ VL - 1096 IS - 1/2 M3 - Article SP - 40 EP - 49 SN - 00219673 AB - Abstract: The chemometric resolution and quantification of overlapped peaks from comprehensive two-dimensional (2D) liquid chromatography (LC×LC) data are demonstrated. The LC×LC data is produced from an in-house LC×LC analyzer that couples an anion-exchange column via a multi-port valve with a reversed-phase column connected to a UV absorbance detector. Three test mixtures, each containing a target analyte, are subjected to partial LC×LC separations to simulate likely cases of signal overlap. The resulting unresolved target-analyte signals are then analyzed by the standard-addition method and two chemometric methods. The LC×LC analyses of a test mixture and its corresponding standard-addition mixture results in two data matrices, one for each mixture. The stacking of these two data matrices produces a data structure that can then be analyzed by trilinear chemometric methods. One method, the generalized rank annihilation method (GRAM), uses a non-iterative eigenvalue-based approach to mathematically resolve overlapped trilinear signals. The other method, parallel factor analysis (PARAFAC), uses an iterative approach to resolve trilinear signals by the optimization of initial estimates using alternating least squares and signal constraints. In this paper, GRAM followed by PARAFAC analysis is shown to produce better qualitative and quantitative results than using each method separately. For instance, for all three test mixtures, the GRAM-PARAFAC approach improved quantitative accuracy by at least a factor of 4 and quantitative precision by more than 2 when compared to GRAM alone. This paper also introduces a new means of correcting run-to-run retention time shifts in comprehensive 2D chromatographic data. [Copyright &y& Elsevier] AB - Copyright of Journal of Chromatography A is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Chromatographic analysis KW - Liquid chromatography KW - Engineering instruments KW - Mathematical statistics KW - Complex mixtures KW - GRAM KW - Liquid chromatography, two-dimensional KW - PARAFAC KW - Three-way data KW - Trilinear KW - two-dimensional N1 - Accession Number: 19060004; Fraga, Carlos G.; Email Address: carlos.fraga@usafa.af.mil; Corley, Cynthia A. 1; Affiliations: 1: Department of Chemistry, 2355 Fairchild Dr., Suite 2N225, United States Air Force Academy, CO 80840-6230, USA; Issue Info: Nov2005, Vol. 1096 Issue 1/2, p40; Thesaurus Term: Chromatographic analysis; Thesaurus Term: Liquid chromatography; Subject Term: Engineering instruments; Subject Term: Mathematical statistics; Author-Supplied Keyword: Complex mixtures; Author-Supplied Keyword: GRAM; Author-Supplied Keyword: Liquid chromatography, two-dimensional; Author-Supplied Keyword: PARAFAC; Author-Supplied Keyword: Three-way data; Author-Supplied Keyword: Trilinear; Author-Supplied Keyword: two-dimensional; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.chroma.2005.03.118 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=19060004&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - U'ren, Alfred B. AU - Erdmann, Reinhard AU - Walmsley, Ian A. T1 - Synthesis of time-bin entangled states via tailored group velocity matching. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2005/11/10/ VL - 52 IS - 16 M3 - Article SP - 2197 EP - 2205 SN - 09500340 AB - We show that tailored group velocity matching in non-linear χ (2) crystal sequences interspersed with birefringent χ (1) compensators can be used to generate time-bin entangled states. By choosing the crystal and compensator materials appropriately it is possible to generate all four time-bin Bell states without resorting to time non-stationary devices. This scheme, in addition, lends itself well to the generation of higher-dimensionality states such as time-bin qutrits. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - SPEED KW - NONLINEAR theories KW - SPATIO-temporal variation KW - CRYSTAL optics KW - PHOTONS N1 - Accession Number: 18807180; U'ren, Alfred B. 1,2; Email Address: auren@cicese.mx; Erdmann, Reinhard 3; Walmsley, Ian A. 2; Affiliations: 1: Centro de Investigació n Científica y Educaciín Superior de Ensenada (CICESE), Baja California, 22860, Mexico; 2: Clarendon Laboratory, Oxford University, Parks Road, Oxford, OX1 3PU, England; 3: Sensors Directorate, Air Force Research Laboratory, Baja California, Rome, NY; Issue Info: 11/10/2005, Vol. 52 Issue 16, p2197; Thesaurus Term: RESEARCH; Subject Term: SPEED; Subject Term: NONLINEAR theories; Subject Term: SPATIO-temporal variation; Subject Term: CRYSTAL optics; Subject Term: PHOTONS; Number of Pages: 9p; Illustrations: 4 Color Photographs, 3 Diagrams; Document Type: Article L3 - 10.1080/09500340500275843 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=18807180&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 106374341 T1 - Severe hemolytic disease of the newborn due to anti-Cw. AU - Byers BD AU - Gordon MC AU - Higby K Y1 - 2005/11/02/ N1 - Accession Number: 106374341. Language: English. Entry Date: 20060106. Revision Date: 20150711. Publication Type: Journal Article; case study. Journal Subset: Biomedical; Peer Reviewed; USA. NLM UID: 0401101. KW - Anemia -- Therapy -- In Utero KW - Blood Transfusion -- In Utero KW - Erythroblastosis, Fetal KW - RH Isoimmunization KW - Adult KW - Antibodies KW - Blood Transfusion -- In Infancy and Childhood KW - Female KW - Fetus KW - Infant, Newborn KW - Pregnancy KW - Pregnancy Outcomes SP - 1180 EP - 1182 JO - Obstetrics & Gynecology JF - Obstetrics & Gynecology JA - OBSTET GYNECOL VL - 106 IS - 5 part 2 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 0029-7844 AD - San Antonio Uniformed Services Health Education Consortium, Brooke Army Medical Center and Wilford Hall United States Air Force Medical Center, San Antonio, Texas U2 - PMID: 16260563. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106374341&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - GEN AU - Hagstad, David T1 - To Give Blood or Not to Give. JO - American Journal of Nursing JF - American Journal of Nursing Y1 - 2005/11// VL - 105 IS - 11 M3 - Letter SP - 31 EP - 31 SN - 0002936X AB - This article presents information on the author's views on whether the decision to donate blood should be based on a patient's nationality or their ability to care for their own countrymen in reference to an incident that took place in Iraq with a prisoner of war. The author had volunteered to come to Iraq and give whatever he could--shy of his own life or limb--to help those in need. He didn't quantify that decision by stipulating which people he thought deserved more help. The author assumed that his colleagues had the worst of intentions rather than rational goals in a difficult situation. KW - DONATION of organs, tissues, etc. KW - BLOOD KW - VOLUNTEER service KW - CARING KW - ATTITUDE (Psychology) KW - IRAQ N1 - Accession Number: 18907112; Hagstad, David 1; Email Address: david•in•balad@yahoo.com; Source Information: Nov2005, Vol. 105 Issue 11, p31; Subject: DONATION of organs, tissues, etc.; Subject: BLOOD; Subject: VOLUNTEER service; Subject: CARING; Subject: ATTITUDE (Psychology); Geographic Terms: IRAQ; Number of Pages: 1p; Document Type: Letter UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=18907112&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 106373267 T1 - Letter from Iraq. To give blood or not to give: should there be a question? AU - Hagstad D Y1 - 2005/11// N1 - Accession Number: 106373267. Language: English. Entry Date: 20060106. Revision Date: 20150711. Publication Type: Journal Article; anecdote. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. NLM UID: 0372646. KW - Blood Donors -- Ethical Issues KW - Blood Transfusion -- Ethical Issues KW - Military Personnel KW - Prisoners KW - Refusal to Treat -- Ethical Issues KW - War -- Iraq KW - Inpatients KW - Iraq SP - 31 EP - 31 JO - American Journal of Nursing JF - American Journal of Nursing JA - AM J NURS VL - 105 IS - 11 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 0002-936X AD - Master Sergeant, Louisiana Air National Guard, United States Air Force; david_in_balad@yahoo.com U2 - PMID: 16264298. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106373267&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Grutter, Paul W. AU - Petersen, Steve A. T1 - Anatomical Acromioclavicular Ligament Reconstruction: A Biomechanical Comparison of Reconstructive Techniques of the Acromioclavicular Joint. JO - American Journal of Sports Medicine JF - American Journal of Sports Medicine Y1 - 2005/11// VL - 33 IS - 11 M3 - Article SP - 1723 EP - 1728 SN - 03635465 AB - Background: Current surgical treatments for acromioclavicular separations do not re-create the anatomy of the acromioclavicular joint. Hypothesis: Anatomical acromioclavicular reconstruction re-creates the strength of the native acromioclavicular joint and is stronger than a modified Weaver-Dunn repair. Study Design: Controlled laboratory study. Methods: The native acromioclavicular joint in 6 fresh-frozen cadaveric upper extremities was stressed to failure under uniaxial tension in the coronal plane. A modified Weaver-Dunn procedure, anatomical acromioclavicular reconstruction using a palmaris longus graft, and anatomical acromioclavicular reconstruction using a flexor carpi radialis graft were then performed sequentially. Each repair was stressed to failure. Load-displacement curves and mechanism of failure were recorded for each. Results: Loads at failure for the native acromioclavicular joint complex, modified Weaver-Dunn procedure, anatomical acromioclavicular reconstruction using a palmaris longus tendon graft, and anatomical acromioclavicular reconstruction using a flexor carpi radialis tendon graft were 815 N, 483 N, 326 N, and 774 N, respectively. The strength of the native acromioclavicular joint complex was significantly different from the modified Weaver-Dunn repair (P < .001) and the anatomical acromioclavicular reconstruction using a palmaris longus tendon graft (P < .001) but not from the anatomical acromioclavicular reconstruction using a flexor carpi radialis tendon graft (P = .607). Conclusion: The strength of the described anatomical acromioclavicular reconstruction is limited by the tendon graft used. Anatomical acromioclavicular reconstruction with a flexor carpi radialis tendon graft re-creates the tensile strength of the native acromioclavicular joint complex and is superior to a modified Weaver-Dunn repair. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Sports Medicine is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TENDONS -- Surgery KW - TENDONS -- Wounds & injuries KW - JOINTS (Anatomy) -- Diseases KW - PHYSIOLOGY KW - RESEARCH KW - ANATOMY KW - acromioclavicular joint KW - biomechanics KW - ligaments KW - reconstruction KW - shoulder N1 - Accession Number: 18845987; Grutter, Paul W. 1; Email Address: grutter@excite.com; Petersen, Steve A. 2; Source Information: Nov2005, Vol. 33 Issue 11, p1723; Subject: TENDONS -- Surgery; Subject: TENDONS -- Wounds & injuries; Subject: JOINTS (Anatomy) -- Diseases; Subject: PHYSIOLOGY; Subject: RESEARCH; Subject: ANATOMY; Author-Supplied Keyword: acromioclavicular joint; Author-Supplied Keyword: biomechanics; Author-Supplied Keyword: ligaments; Author-Supplied Keyword: reconstruction; Author-Supplied Keyword: shoulder; Number of Pages: 6p; Document Type: Article L3 - 10.1177/0363546505275646 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=18845987&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Patnaik, Amalendu AU - Anagnostou, Dimitrios AU - Christodoulou, Christos G. AU - Lyke, James C. T1 - Neurocomputational Analysis of a Multiband Reconfigurable Planar Antenna. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2005/11// Y1 - 2005/11// VL - 53 IS - 11 M3 - Article SP - 3453 EP - 3458 SN - 0018926X AB - Procedures using neural networks are developed for characterizing multiband reconfigurable antennas. A multilayer perceptron (MLP) is used to locate the operational frequency bands of the antenna at different reconfigured conditions. Another self-organizing map (SOM) neural network accomplishes the task of locating the switches to be turned ON for a desired frequency response. The developed formulation is tested on a laboratory prototype antenna. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNAS (Electronics) KW - NEURAL networks (Computer science) KW - ELECTRONIC apparatus & appliances KW - FREQUENCIES of oscillating systems KW - SELF-organizing maps KW - PROTOTYPES N1 - Accession Number: 19077748; Source Information: Nov2005, Vol. 53 Issue 11, p3453; Subject Term: ANTENNAS (Electronics); Subject Term: NEURAL networks (Computer science); Subject Term: ELECTRONIC apparatus & appliances; Subject Term: FREQUENCIES of oscillating systems; Subject Term: SELF-organizing maps; Subject Term: PROTOTYPES; Subject Term: ; Number of Pages: 6p; ; Document Type: Article; L3 - 10.1109/TAP.2005.858617 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19077748&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - York, Raymond G. AU - Lewis, Elise AU - Brown, W. Ray AU - Girard, Michael F. AU - Mattie, David R. AU - Funk, Kathleen A. AU - Strawson, Joan S. T1 - Refining the Effects Observed in a Developmental Neurobehavioral Study of Ammonium Perchlorate Administered Orally in Drinking Water to Rats. I. Thyroid and Reproductive Effects. JO - International Journal of Toxicology (Taylor & Francis) JF - International Journal of Toxicology (Taylor & Francis) Y1 - 2005/11//Nov/Dec2005 VL - 24 IS - 6 M3 - Article SP - 403 EP - 418 PB - Taylor & Francis Ltd SN - 10915818 AB - A recent study further investigated the potential effects of maternal thyroid function and morphology on fetal development upon maternal exposure to ammonium perchlorate during gestation and lactation. Female Sprague-Dawley rats (25/group) were given continual access to 0 (carrier), 0.01, 0.1, 1.0, and 30.0 mg/kg-day perchlorate in drinking water beginning 2 weeks prior to cohabitation through lactation day 10. Maternal, fetal, and pup serum thyroid hormone (thyroid-stimulating hormone [TSH], triiodo thyronine [T 3 ], thyroxine [T 4 ]) levels and thyroid histopathology were evaluated on gestation day 21, and lactation days 5, 10, and 22. No effects of exposure were observed on cesarean-sectioning, litter parameters, or fetal alterations. Reproductive parameters, including gestation length, number of implants, litter size, pup viability, and lactation indices, were comparable among all groups. Thyroid weights of dams sacrificed on gestation day 21, and lactation days 10 and 22 were significantly increased at 30.0 mg/kg-day. Increased thyroid weights were observed in male and female pups as early as postpartum days 5 and 10, respectively. Changes in maternal and neonatal thyroid histopathology were detectable at 1.0 mg/kg-day exposure. The maternal no-observable-effect level (NOEL) was 0.1 mg/kg-day (follicular cell hyperplasia was present at 1.0 and 30.0 mg/kg-day). The developmental NOEL was less than 0.01 mg/kg-day; thyroid weights of postpartum day 10 pups were increased at all exposures. Colloid depletion at 1.0 and 30.0 mg/kg-day exposures and changes of hormone levels at all exposures were considered an adaptive effect and appeared reversible in the rodent. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Toxicology (Taylor & Francis) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Perchlorates KW - Ammonium perchlorate KW - Pregnancy KW - Lactation KW - Thyronines KW - Pathological histology KW - Thyroxine KW - Chemicals KW - Rats as laboratory animals KW - Perchlorate KW - Rat KW - Reproduction KW - Thyroid Histopathology KW - Thyroid Hormones N1 - Accession Number: 19328626; York, Raymond G. 1; Email Address: raymond.york@us.crl.com; Lewis, Elise 1; Brown, W. Ray 2; Girard, Michael F. 3; Mattie, David R. 4; Funk, Kathleen A. 5; Strawson, Joan S. 6; Affiliations: 1: Charles River Laboratories, Preclinical Services, Horsham, Pennsylvania, USA; 2: Research Pathology Services, Inc., New Britain, Pennsylvania, USA; 3: Perchlorate Study Group, Sacramento, California, USA; 4: Air Force Research Laboratory, WPAFB, Ohio, USA; 5: Experimental Pathology Laboratories, Sterling, Virginia, USA; 6: Toxicology Excellence for Risk Assessment, Cincinnati, Ohio, USA; Issue Info: Nov/Dec2005, Vol. 24 Issue 6, p403; Thesaurus Term: Perchlorates; Subject Term: Ammonium perchlorate; Subject Term: Pregnancy; Subject Term: Lactation; Subject Term: Thyronines; Subject Term: Pathological histology; Subject Term: Thyroxine; Subject Term: Chemicals; Subject Term: Rats as laboratory animals; Author-Supplied Keyword: Perchlorate; Author-Supplied Keyword: Rat; Author-Supplied Keyword: Reproduction; Author-Supplied Keyword: Thyroid Histopathology; Author-Supplied Keyword: Thyroid Hormones; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 16p; Illustrations: 11 Charts, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=19328626&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - York, Raymond G. AU - Barnett, Jr., John AU - Girard, Michael F. AU - Mattie, David R. AU - Bekkedal, Marni V. K. AU - Garman, Robert H. AU - Strawson, Joan S. T1 - Refining the Effects Observed in a Developmental Neurobehavioral Study of Ammonium Perchlorate Administered Orally in Drinking Water to Rats. II. Behavioral and Neurodevelopment Effects. JO - International Journal of Toxicology (Taylor & Francis) JF - International Journal of Toxicology (Taylor & Francis) Y1 - 2005/11//Nov/Dec2005 VL - 24 IS - 6 M3 - Article SP - 451 EP - 467 PB - Taylor & Francis Ltd SN - 10915818 AB - A developmental neurotoxicity study was conducted to generate additional data on the potential functional and morphological hazard to the central nervous system caused by ammonium perchlorate in offspring from in utero and lactation exposure. Female Sprague-Dawley rats (23 to 25/group) were given continuous access to 0 (carrier), 0.1, 1.0, 3.0, and 10.0 mg/kg-day perchlorate in the drinking water beginning 2 weeks prior to mating and continuing through day 10 of lactation for the behavioral function assessment or given continuous access to 0 (carrier), 0.1, 1.0, 3.0, and 30.0 mg/kg-day beginning on gestation day 0 and continuing through day 10 of lactation for neurodevelopment assessments. Motor activity was conducted on postpartum days 14, 18, and 22 and juvenile brain weights, neurohistopathological examinations, and regional brain morphometry were conducted on postpartum days 10 and 22. This research revealed a sexually dimorphic response, with some brain regions being larger in perchlorate-treated male rats than in comparable controls. Even so, there was no evidence of any obvious exposure-related effects on male rat brain weights or neuropathology. The most consistent exposure-related effect in the male pups was on the thickness of the corpus callosum, with both the right- and left-sided measures of the thickness of this white matter tract being significantly greater for the male pups in the 0.1 and 1.0 mg/kg-day exposure groups. The behavioral testing suggests prenatal exposure to ammonium perchlorate does not affect the development of gross motor movements in the pups. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Toxicology (Taylor & Francis) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Morphology KW - Perchlorates KW - Drinking water KW - DISEASES KW - Neurotoxicology KW - Central nervous system KW - Ammonium perchlorate KW - Lactation KW - Rats KW - Nervous system KW - Brain Morphometry KW - Developmental Neurotoxicity KW - Perchlorate KW - Rat N1 - Accession Number: 19328629; York, Raymond G. 1; Email Address: raymond.york@us.crl.com; Barnett, Jr., John 1; Girard, Michael F. 2; Mattie, David R. 3; Bekkedal, Marni V. K. 4; Garman, Robert H. 5; Strawson, Joan S. 6; Affiliations: 1: Charles River Laboratories, Preclinical Services, Horsham, Pennsylvania, USA; 2: Chairman, Perchlorate Study Group, Sacramento, California, USA; 3: Air Force Research Laboratory, WPAFB, Dayton, Ohio, USA; 4: Bureau of Environmental Health, Madison, Wisconsin, USA; 5: Consultants in Veterinary Pathology, Inc., Murrysville, Pennsylvania, USA; 6: Toxicology Excellence for Risk Assessment, Cincinnati, Ohio, USA; Issue Info: Nov/Dec2005, Vol. 24 Issue 6, p451; Thesaurus Term: Morphology; Thesaurus Term: Perchlorates; Thesaurus Term: Drinking water; Thesaurus Term: DISEASES; Subject Term: Neurotoxicology; Subject Term: Central nervous system; Subject Term: Ammonium perchlorate; Subject Term: Lactation; Subject Term: Rats; Subject Term: Nervous system; Author-Supplied Keyword: Brain Morphometry; Author-Supplied Keyword: Developmental Neurotoxicity; Author-Supplied Keyword: Perchlorate; Author-Supplied Keyword: Rat; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 17p; Illustrations: 7 Diagrams, 4 Charts, 4 Graphs; Document Type: Article L3 - 10.1080/10915810500367094 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=19328629&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - York, Raymond G. AU - Barnett, Jr., John AU - Girard, Michael F. AU - Mattie, David R. AU - Bekkedal, Marni V. K. AU - Garman, Robert H. AU - Strawson, Joan S. T1 - Refining the Effects Observed in a Developmental Neurobehavioral Study of Ammonium Perchlorate Administered Orally in Drinking Water to Rats. II. Behavioral and Neurodevelopment Effects. JO - International Journal of Toxicology (Taylor & Francis) JF - International Journal of Toxicology (Taylor & Francis) Y1 - 2005/11//Nov/Dec2005 VL - 24 IS - 6 M3 - Article SP - 451 EP - 467 PB - Taylor & Francis Ltd SN - 10915818 AB - A developmental neurotoxicity study was conducted to generate additional data on the potential functional and morphological hazard to the central nervous system caused by ammonium perchlorate in offspring from in utero and lactation exposure. Female Sprague-Dawley rats (23 to 25/group) were given continuous access to 0 (carrier), 0.1, 1.0, 3.0, and 10.0 mg/kg-day perchlorate in the drinking water beginning 2 weeks prior to mating and continuing through day 10 of lactation for the behavioral function assessment or given continuous access to 0 (carrier), 0.1, 1.0, 3.0, and 30.0 mg/kg-day beginning on gestation day 0 and continuing through day 10 of lactation for neurodevelopment assessments. Motor activity was conducted on postpartum days 14, 18, and 22 and juvenile brain weights, neurohistopathological examinations, and regional brain morphometry were conducted on postpartum days 10 and 22. This research revealed a sexually dimorphic response, with some brain regions being larger in perchlorate-treated male rats than in comparable controls. Even so, there was no evidence of any obvious exposure-related effects on male rat brain weights or neuropathology. The most consistent exposure-related effect in the male pups was on the thickness of the corpus callosum, with both the right- and left-sided measures of the thickness of this white matter tract being significantly greater for the male pups in the 0.1 and 1.0 mg/kg-day exposure groups. The behavioral testing suggests prenatal exposure to ammonium perchlorate does not affect the development of gross motor movements in the pups. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Toxicology (Taylor & Francis) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEUROTOXICOLOGY KW - CENTRAL nervous system KW - MORPHOLOGY KW - AMMONIUM perchlorate KW - PERCHLORATES KW - LACTATION KW - RATS KW - DRINKING water KW - NERVOUS system -- Diseases KW - Brain Morphometry KW - Developmental Neurotoxicity KW - Perchlorate KW - Rat N1 - Accession Number: 19328629; York, Raymond G. 1; Email Address: raymond.york@us.crl.com; Barnett, Jr., John 1; Girard, Michael F. 2; Mattie, David R. 3; Bekkedal, Marni V. K. 4; Garman, Robert H. 5; Strawson, Joan S. 6; Source Information: Nov/Dec2005, Vol. 24 Issue 6, p451; Subject: NEUROTOXICOLOGY; Subject: CENTRAL nervous system; Subject: MORPHOLOGY; Subject: AMMONIUM perchlorate; Subject: PERCHLORATES; Subject: LACTATION; Subject: RATS; Subject: DRINKING water; Subject: NERVOUS system -- Diseases; Author-Supplied Keyword: Brain Morphometry; Author-Supplied Keyword: Developmental Neurotoxicity; Author-Supplied Keyword: Perchlorate; Author-Supplied Keyword: Rat; Number of Pages: 17p; Illustrations: 7 Diagrams, 4 Charts, 4 Graphs; Document Type: Article L3 - 10.1080/10915810500367094 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=19328629&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Muszynski, Michael T1 - Spy Handler: Memoir of a KGB Officer. JO - Journal of Military Ethics JF - Journal of Military Ethics J1 - Journal of Military Ethics PY - 2005/11// Y1 - 2005/11// VL - 4 IS - 3 M3 - Book Review SP - 220 EP - 221 PB - Routledge SN - 15027570 AB - Reviews the book "Spy Handler: Memoir of a KGB Officer," by Victor Cherkashin and Gregory Feifer. KW - SPY Handler: Memoir of a KGB Officer: The True Story of the Man Who Recruited Robert Hanssen & Aldrich Ames (Book) KW - CHERKASHIN, Victor, 1932- KW - FEIFER, Gregory KW - INTELLIGENCE service KW - NONFICTION N1 - Accession Number: 18622156; Source Information: Nov2005, Vol. 4 Issue 3, p220; Subject Term: SPY Handler: Memoir of a KGB Officer: The True Story of the Man Who Recruited Robert Hanssen & Aldrich Ames (Book); Subject Term: CHERKASHIN, Victor, 1932-; Subject Term: FEIFER, Gregory; Subject Term: INTELLIGENCE service; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; L3 - 10.1080/15027570510030761 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=18622156&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Brungart, Douglas S. AU - Simpson, Brian D. AU - Freyman, Richard L. T1 - Precedence-based speech segregation in a virtual auditory environment. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2005/11// VL - 118 IS - 5 M3 - Article SP - 3241 EP - 3251 SN - 00014966 AB - When a masking sound is spatially separated from a target speech signal, substantial releases from masking typically occur both for speech and noise maskers. However, when a delayed copy of the masker is also presented at the location of the target speech (a condition that has been referred to as the front target, right-front masker or F-RF configuration), the advantages of spatial separation vanish for noise maskers but remain substantial for speech maskers. This effect has been attributed to precedence, which introduces an apparent spatial separation between the target and masker in the F-RF configuration that helps the listener to segregate the target from a masking voice but not from a masking noise. In this study, virtual synthesis techniques were used to examine variations of the F-RF configuration in an attempt to more fully understand the stimulus parameters that influence the release from masking obtained in that condition. The results show that the release from speech-on-speech masking caused by the addition of the delayed copy of the masker is robust across a wide variety of source locations, masker locations, and masker delay values. This suggests that the speech unmasking that occurs in the F-RF configuration is not dependent on any single perceptual cue and may indicate that F-RF speech segregation is only partially based on the apparent left-right location of the RF masker. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOUND KW - SIGNALS & signaling KW - NOISE KW - RADIO frequency KW - VOICE N1 - Accession Number: 20263603; Brungart, Douglas S. 1; Email Address: douglas.brungart@wpafb.af.mil; Simpson, Brian D. 1; Freyman, Richard L. 2; Affiliations: 1 : Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433; 2 : University of Massachusetts, Amherst, Massachusetts 01003; Source Info: Nov2005, Vol. 118 Issue 5, p3241; Subject Term: SOUND; Subject Term: SIGNALS & signaling; Subject Term: NOISE; Subject Term: RADIO frequency; Subject Term: VOICE; Number of Pages: 11p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1121/1.2082557 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=20263603&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR AU - Mckinney, Jr., Earl H. AU - Barker, James R. AU - Davis, Kevin J. AU - Smith, Daryl T1 - HOW SWIFT STARTING ACTION TEAMS GET OFF THE GROUND. JO - Management Communication Quarterly JF - Management Communication Quarterly Y1 - 2005/11// VL - 19 IS - 2 M3 - Article SP - 198 EP - 237 SN - 08933189 AB - In 1989, United Airlines Flight 232 survived a catastrophic in-flight engine explosion because of in part, the crew's ability to communicate while under crisis conditions. Drawing on the experience of Flight 232, other flight deck crew research, and the authors `own flying experiences, the authors develop a descriptive, proposition-based model of the communication process dynamics found in such groups, which they call swift starting action teams. They argue that swift starting action teams, composed of highly trained strangers within one organization, must use communication processes that enable them to perform well immediately and manage crises in high risk environments. These processes depend on each team `s use and awareness of communication values and communication interactions. The authors discuss the communication dynamics of swift starting action teams and the implication of considering such teams in future research. [ABSTRACT FROM AUTHOR] AB - Copyright of Management Communication Quarterly is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Business communication KW - Communication in organizations KW - Confidential communications KW - Work environment KW - Airline industry employees KW - Research KW - communication KW - crisis KW - high hazard KW - teams N1 - Accession Number: 18849460; Mckinney, Jr., Earl H. 1; Barker, James R. 2; Davis, Kevin J. 3; Smith, Daryl 4; Affiliations: 1: Assistant professor, Bowling Green State University.; 2: Professor of organizational theory and strategy, Waikato Management School, Waikato University.; 3: Senior military professor, Management Department, United States Air Force Academy.; 4: United States Air Force Academy.; Issue Info: Nov2005, Vol. 19 Issue 2, p198; Thesaurus Term: Business communication; Thesaurus Term: Communication in organizations; Thesaurus Term: Confidential communications; Subject Term: Work environment; Subject Term: Airline industry employees; Subject Term: Research; Author-Supplied Keyword: communication; Author-Supplied Keyword: crisis; Author-Supplied Keyword: high hazard; Author-Supplied Keyword: teams; Number of Pages: 40p; Document Type: Article L3 - 10.1177/0893318905278539 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=18849460&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Shang, J.S. AU - Surzhikov, S.T. AU - Kimmel, R. AU - Gaitonde, D. AU - Menart, J. AU - Hayes, J. T1 - Mechanisms of plasma actuators for hypersonic flow control JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences J1 - Progress in Aerospace Sciences PY - 2005/11// Y1 - 2005/11// VL - 41 IS - 8 M3 - Article SP - 642 EP - 668 SN - 03760421 AB - Abstract: A summary of recent research progress in hypersonic plasma actuators for flow control is attempted. It is found that the most effective plasma actuator is derived from an electromagnetic perturbation and amplifies by a subsequent viscous–inviscid interaction. Computational efforts using drift-diffusion theory and a simple phenomenological plasma model, as well as experiments in a hypersonic plasma channel, have shown the effectiveness of using electro–aerodynamic interaction as a hypersonic flow control mechanism. In principle, the plasma actuator based on magneto–aerodynamic interaction should have an added mechanism in the Lorentz force, making it even more effective as a flow control mechanism. However, this approach also incurs additional challenges and complications due to the Hall effect. Magneto–aerodynamic interactions have also been demonstrated for separated flow control, albeit in a very limited scope. Numerical simulations based on a simple phenomenological plasma model have shown the feasibility of separated flow suppression in shock-boundary-layer interaction over a compression ramp at a hypersonic flow of Mach 14.1. The control mechanism relies on the Lorentz force to energize the retarded shear layer in the viscous interacting region, but the effectiveness of momentum transfer via inelastic collision requires further validation. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUID dynamics KW - AUTOMATIC control KW - INTERNAL combustion engines -- Ignition KW - MOMENTUM transfer KW - FLUID mechanics N1 - Accession Number: 19842039; Source Information: Nov2005, Vol. 41 Issue 8, p642; Subject Term: FLUID dynamics; Subject Term: AUTOMATIC control; Subject Term: INTERNAL combustion engines -- Ignition; Subject Term: MOMENTUM transfer; Subject Term: FLUID mechanics; Subject Term: ; Number of Pages: 27p; ; Document Type: Article; L3 - 10.1016/j.paerosci.2005.11.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19842039&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - AU - Newmiller, William1 T1 - The Navajo Code Talkers and Their Photographer. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2005/11// Y1 - 2005/11// VL - 17 IS - 1/2 CP - 1/2 M3 - Article SP - 6 EP - 21 SN - 10466967 AB - The article focuses on the Navajo Code Talkers, who contributed to the cause of the United States during World War II and who were eventually recognized as America's heroes. The Code Talkers emerged in the 1940s when young Navajo men, mostly sheepherders, joined the U.S. Marines and were tasked to create a code within their Navajo language that would be used for tactical communication during the war. The article goes on to focus on Kenji Kawano, the photographer of the Navajo Code Talkers. KW - Photographers KW - Navajo code talkers KW - World War, 1939-1945 KW - Kawano, Kenji KW - United States N1 - Accession Number: 19134196; Authors: Newmiller, William 1; Affiliations: 1: United States Air Force Academy; Subject: Navajo code talkers; Subject: World War, 1939-1945; Subject: Kawano, Kenji; Subject: Photographers; Subject: United States; Number of Pages: 16p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=asu&AN=19134196&site=ehost-live&scope=site DP - EBSCOhost DB - asu ER - TY - GEN AU - Lemp, Richard W. T1 - Comic Metamorphosis of the (Anti) Hero in Roch Carrier's WWII Novels. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2005/11// Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Literary Criticism SP - 74 EP - 86 PB - US Air Force Academy English Department SN - 10466967 AB - The article examines the comic metamorphosis of the hero in Canadian author Roch Carrier's World War II novels, such as "La Guerre, Yes Sir!" and "Petit Homme Tornade." It argues that the main quest, if any, in "La Guerre, Yes Sir!" is more a journey away from the heroic rather than an engagement in it. It also discusses the inseparability of sexuality and warfare in the novel. The article also highlights the key themes of healing and restoration in "Petit Homme Tornade." KW - WORLD War, 1939-1945 KW - CARRIER, Roch KW - LA Guerre, Yes Sir! (Book) KW - PETIT Homme Tornade (Book) KW - WAR in literature KW - FICTION N1 - Accession Number: 19134263; Source Information: 2005, Vol. 17 Issue 1/2, p74; Subject Term: WORLD War, 1939-1945; Subject Term: CARRIER, Roch; Subject Term: LA Guerre, Yes Sir! (Book); Subject Term: PETIT Homme Tornade (Book); Subject Term: WAR in literature; Subject Term: FICTION; Subject Term: ; Number of Pages: 13p; ; Document Type: Literary Criticism; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19134263&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Cook, James L. T1 - Reproaching the Military Hero Sans Peur. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2005/11// Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Article SP - 87 EP - 101 PB - US Air Force Academy English Department SN - 10466967 AB - The article examines the role of fear in heroism via an analysis of philosophical and literary conceptualizations of heroism. It considers whether fear should be a necessary component of heroism and whether valor or courage needs to incorporate the sort of fear which a reasonable person would experience in certain situations such as war. KW - COURAGE KW - FEAR KW - HEROES KW - WAR KW - PHILOSOPHY KW - LITERATURE N1 - Accession Number: 19134266; Source Information: 2005, Vol. 17 Issue 1/2, p87; Subject Term: COURAGE; Subject Term: FEAR; Subject Term: HEROES; Subject Term: WAR; Subject Term: PHILOSOPHY; Subject Term: LITERATURE; Subject Term: ; Number of Pages: 15p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19134266&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - Burns, Robert W. T1 - "More Frail and Mortal": The Wound of Fear in Philip Caputo's In the Forest of the Laughing Elephant. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2005/11// Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Literary Criticism SP - 102 EP - 107 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents a critique of Philip Caputo's novella "In the Forest of the Laughing Elephant." It looks at how the work illustrates the hero myth and notes how Caputo addresses the hero theme in ways similar to author D. H. Lawrence in "The Ghosts of Tsavo: Stalking the Mystery Lions of East Africa." KW - PROTAGONISTS (Persons) in literature KW - CAPUTO, Philip KW - LAWRENCE, D. H. (David Herbert), 1885-1930 KW - CRITICISM KW - CHARACTER KW - COURAGE KW - FICTION N1 - Accession Number: 19134270; Source Information: 2005, Vol. 17 Issue 1/2, p102; Subject Term: PROTAGONISTS (Persons) in literature; Subject Term: CAPUTO, Philip; Subject Term: LAWRENCE, D. H. (David Herbert), 1885-1930; Subject Term: CRITICISM; Subject Term: CHARACTER; Subject Term: COURAGE; Subject Term: FICTION; Subject Term: ; Number of Pages: 6p; ; Document Type: Literary Criticism; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19134270&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - McGuire, Thomas T1 - Friends from Other Wars: Four Transcreative Translations. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2005/11// Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Article SP - 129 EP - 136 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents "The Poem of Force," translated and adapted from Simone Weil's 1940 essay "L'Iliad, ou Le Poem de la Force," and "From Salamis in Cyprus to Babylon," which is composed of adapted fragments of a 1953 George Seferis poem written in response to the Greek-Turkish conflict. These translations were produced by the author between March 2003 and June 2004. KW - POETRY (Literary form) -- Translating KW - POEM of Force, The (Poem) KW - FROM Salamis in Cyprus to Babylon (Poem) KW - TRANSLATING & interpreting KW - SEFERIS, George, 1900-1971 KW - WEIL, Simone, 1909-1943 N1 - Accession Number: 19134284; Source Information: 2005, Vol. 17 Issue 1/2, p129; Subject Term: POETRY (Literary form) -- Translating; Subject Term: POEM of Force, The (Poem); Subject Term: FROM Salamis in Cyprus to Babylon (Poem); Subject Term: TRANSLATING & interpreting; Subject Term: SEFERIS, George, 1900-1971; Subject Term: WEIL, Simone, 1909-1943; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19134284&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Muenger, Elizabeth A. T1 - The Gift of Valor: A War Story. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2005/11// Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Book Review SP - 329 EP - 331 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "The Gift of Valor: A War Story," by Michael M. Phillips. KW - GIFT of Valor: A War Story, The (Book) KW - PHILLIPS, Michael M. KW - WAR KW - NONFICTION N1 - Accession Number: 19134475; Source Information: 2005, Vol. 17 Issue 1/2, p329; Subject Term: GIFT of Valor: A War Story, The (Book); Subject Term: PHILLIPS, Michael M.; Subject Term: WAR; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19134475&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Torke, Kyle T1 - Old Glory: American War Poems from the Revolutionary War to the War on Terror. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2005/11// Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Book Review SP - 331 EP - 334 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "Old Glory: American War Poems from the Revolutionary War to the War on Terror," edited by Robert Hedin. KW - OLD Glory: American War Poems From the Revolutionary War to the War on Terrorism (Book) KW - HEDIN, Robert KW - WAR poetry KW - FICTION N1 - Accession Number: 19134480; Source Information: 2005, Vol. 17 Issue 1/2, p331; Subject Term: OLD Glory: American War Poems From the Revolutionary War to the War on Terrorism (Book); Subject Term: HEDIN, Robert; Subject Term: WAR poetry; Subject Term: FICTION; Subject Term: ; Number of Pages: 4p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19134480&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Buchanan, Dave T1 - Baby, Let's Make a Baby. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2005/11// Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Book Review SP - 335 EP - 336 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "Baby, Let's Make a Baby," by Kirk Curnutt. KW - BABY, Let's Make a Baby (Book) KW - CURNUTT, Kirk KW - MAN-woman relationships KW - FICTION N1 - Accession Number: 19134490; Source Information: 2005, Vol. 17 Issue 1/2, p335; Subject Term: BABY, Let's Make a Baby (Book); Subject Term: CURNUTT, Kirk; Subject Term: MAN-woman relationships; Subject Term: FICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19134490&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Newmiller, William T1 - Amache: The Story of Japanese Internment in Colorado During World War II. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2005/11// Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Book Review SP - 339 EP - 341 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "Amache: The Story of Japanese Internment in Colorado During World War II," by Robert Harvey. KW - AMACHE: The Story of Japanese Internment in Colorado During World War II (Book) KW - HARVEY, Robert KW - JAPANESE Americans -- Evacuation & relocation, 1942-1945 KW - GRANADA Relocation Center KW - NONFICTION N1 - Accession Number: 19134502; Source Information: 2005, Vol. 17 Issue 1/2, p339; Subject Term: AMACHE: The Story of Japanese Internment in Colorado During World War II (Book); Subject Term: HARVEY, Robert; Subject Term: JAPANESE Americans -- Evacuation & relocation, 1942-1945; Subject Term: GRANADA Relocation Center; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19134502&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Coakley, Thomas T1 - Understanding the Literature of World War I: a Student Casebook to Issues, Sources, and Historical Documents. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2005/11// Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Book Review SP - 343 EP - 345 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "Understanding the Literature of World War I: A Student Casebook to Issues, Sources, and Historical Documents," by James H. Meredith. KW - UNDERSTANDING the Literature of World War I: A Student Casebook to Issues, Sources & Historical Documents (Book) KW - MEREDITH, James, 1933- KW - WORLD War, 1914-1918 KW - NONFICTION N1 - Accession Number: 19134510; Source Information: 2005, Vol. 17 Issue 1/2, p343; Subject Term: UNDERSTANDING the Literature of World War I: A Student Casebook to Issues, Sources & Historical Documents (Book); Subject Term: MEREDITH, James, 1933-; Subject Term: WORLD War, 1914-1918; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19134510&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - McCarty, Steven W. T1 - America the Vulnerable: How our Government is Failing to Protect Us from Terrorism. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2005/11// Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Book Review SP - 345 EP - 348 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "America the Vulnerable: How our Government is Failing to Protect Us from Terrorism," by Stephen Flynn. KW - AMERICA the Vulnerable: How Our Government Is Failing to Protect Us From Terrorism (Book) KW - FLYNN, Stephen KW - TERRORISM KW - NONFICTION N1 - Accession Number: 19134513; Source Information: 2005, Vol. 17 Issue 1/2, p345; Subject Term: AMERICA the Vulnerable: How Our Government Is Failing to Protect Us From Terrorism (Book); Subject Term: FLYNN, Stephen; Subject Term: TERRORISM; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 4p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19134513&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2005-14076-002 AN - 2005-14076-002 AU - Kenkel, Mary Beth AU - Deleon, Patrick H. AU - Mantell, Elaine Orabona AU - Steep, Angie E. T1 - Divided No More: Psychology's Role in Integrated Health Care. T3 - Special Section—Section Spéciale: Revisiting the Clinical Psychology Curriculum—Regard Neuf sur le Programme D'études en Psychologie Clinique JF - Canadian Psychology/Psychologie canadienne JO - Canadian Psychology/Psychologie canadienne JA - Can Psychol Y1 - 2005/11// VL - 46 IS - 4 SP - 189 EP - 202 CY - Canada PB - Canadian Psychological Association SN - 0708-5591 SN - 1878-7304 AD - Kenkel, Mary Beth, College of Psychology and Liberal Arts, Florida Institute of Technology, 150 West University Blvd., Melbourne, FL, US, 32901 N1 - Accession Number: 2005-14076-002. Other Journal Title: Canadian Psychological Review/Psychologie canadienne; Canadian Psychologist/Psychologie canadienne; The Canadian Psychologist. Partial author list: First Author & Affiliation: Kenkel, Mary Beth; Florida Institute of Technology, Melbourne, FL, US. Other Publishers: Educational Publishing Foundation. Release Date: 20051114. Correction Date: 20160711. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Health Care Services; Health Care Psychology; Integrated Services; Mental Health Services; Psychologists. Minor Descriptor: Clinical Methods Training; Health; Health Care Delivery; Trends. Classification: Health & Mental Health Treatment & Prevention (3300); Professional Psychological & Health Personnel Issues (3400). Population: Human (10). Location: Canada; US. Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 14. Issue Publication Date: Nov, 2005. Copyright Statement: Canadian Psychological Association. 2005. AB - Health-care providers increasingly recognize the need to address behavioural and emotional influences on physical health in order to provide quality and cost-effective services. As behaviour change experts, psychologists can be critically important in new models of integrated care that focus on both physical and psychological health. However, to be effective, psychologists must be prepared to address the major issues facing health-care systems today and be willing to re-examine and modify current modes of education and practice. This article describes important trends affecting health care and the ways in which psychologists could contribute. Lastly, two psychologists involved in new models of integrated care describe their training and the challenges and rewards of their current activities. (PsycINFO Database Record (c) 2016 APA, all rights reserved) AB - De plus en plus, les pourvoyeurs de soins de santé reconnaissent la nécessité d'examiner les influences comportementales et émotives sur la santé physique afin de pouvoir offrir des services de qualité et peu coûteux. À titre d'experts du changement de comportement, les psychologues peuvent jouer un rôle de premier plan dans les nouveaux modèles de soins intégrés qui englobent la santé physique et psychologique. Cependant, pour être efficaces, les psychologues doivent être prêts à faire face aux problèmes majeurs auxquels font face les systèmes de soins de santé d'aujourd'hui et accepter de réexaminer et de modifier les modes actuels d'éducation et de pratique. Cet article décrit les tendances importantes qui touchent les soins de santé et les façons qui pourraient permettre aux psychologues de contribuer. En dernier lieu, deux psychologues travaillant dans de nouveaux modèles de soins intégrés décrivent leur formation ainsi que les défis et les récompenses de leurs activités actuelles. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - integrated care KW - health care delivery KW - psychologists KW - physical and psychological health KW - training KW - trends KW - 2005 KW - Health Care Services KW - Health Care Psychology KW - Integrated Services KW - Mental Health Services KW - Psychologists KW - Clinical Methods Training KW - Health KW - Health Care Delivery KW - Trends KW - 2005 DO - 10.1037/h0087026 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-14076-002&site=ehost-live&scope=site UR - mkenkel@cfl.rr.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-14076-004 AN - 2005-14076-004 AU - Kenkel, Mary Beth AU - Deleon, Patrick H. AU - Mantell, Elaine Orabona AU - Steep, Angie E. T1 - A psychologist by any other name...: Response to commentary by John L. Arnett. T3 - Special Section—Section Spéciale: Revisiting the Clinical Psychology Curriculum—Regard Neuf sur le Programme D'études en Psychologie Clinique JF - Canadian Psychology/Psychologie canadienne JO - Canadian Psychology/Psychologie canadienne JA - Can Psychol Y1 - 2005/11// VL - 46 IS - 4 SP - 212 EP - 214 CY - Canada PB - Canadian Psychological Association SN - 0708-5591 SN - 1878-7304 N1 - Accession Number: 2005-14076-004. Other Journal Title: Canadian Psychological Review/Psychologie canadienne; Canadian Psychologist/Psychologie canadienne; The Canadian Psychologist. Partial author list: First Author & Affiliation: Kenkel, Mary Beth; Florida Institute of Technology, Melbourne, FL, US. Other Publishers: Educational Publishing Foundation. Release Date: 20051114. Correction Date: 20160711. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Comment/Reply. Language: English. Major Descriptor: Acculturation; Health Care Services; Integrated Services; Psychologists; Psychology Education. Minor Descriptor: Clinical Psychologists; Educational Reform; Mental Health Services; Professional Identity. Classification: Professional Psychological & Health Personnel Issues (3400). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 3. Issue Publication Date: Nov, 2005. Copyright Statement: Canadian Psychological Association. 2005. AB - In his thoughtful commentary, John L. Arnett (see record [rid]2005-14076-003[/rid]) expresses concern that as clinical psychologists make the transition from a focus on mental health care to participation in all of health care, there is a danger that they will lose important aspects of their professional identity. He indicates that he saw such indications in Drs. Steep's and Mantell's descriptions of their experiences in our article (see record [rid]2005-14076-002[/rid]). In this response, we use Berry's (1980) model of acculturation to explain that the most successful cultural transitions occur when one keeps the critical and important aspects of the former culture and identity but also participates in and adopts the cultural aspects of the new setting. We characterize the new roles being assumed by psychologists in integrated health care settings as reflecting this strategy. The adoption of certain language and customs helps facilitate the processes of coordination and communication that are needed for successful collaborations and interdisciplinary work. (PsycINFO Database Record (c) 2016 APA, all rights reserved) AB - Dans son commentaire perspicace, John L. Arnett a exprimé la préoccupation qu'à mesure qu'ils feront la transition d'une concentration sur les soins de santé mentale à la participation dans tous les soins de santé, il y a un danger que les psychologues cliniciens perdent des aspects importants de leur identité professionnelle. Il a indiqué qu'il voyait dans notre article de nombreuses indications de cette perte dans la description des expériences des Dr. Steep et Dr. Mantell. Dans cette réponse, nous avons utilisé le modèle d'acculturation de Berry (1980) pour expliquer que les transitions culturelles les plus réussies se produisent non seulement lorsqu'on garde les aspects critiques et importants de la culture et de l'identité antérieures, mais aussi lorsqu'on adopte les aspects culturels du nouveau contexte. Nous décrivons les nouveaux rôles qui sont assumés par les psychologues dans des contextes de soins de santé intégrés comme reflétant cette stratégie. L'adoption d'un certain langage et de certaines coutumes aide à faciliter les processus de coordination et de communication qui sont nécessaires pour une collaboration et un travail interdisciplinaire fructueux. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - integrated health care KW - health care reform KW - educational reform KW - psychology education KW - psychologists KW - clinical psychologists KW - professional role KW - acculturation KW - 2005 KW - Acculturation KW - Health Care Services KW - Integrated Services KW - Psychologists KW - Psychology Education KW - Clinical Psychologists KW - Educational Reform KW - Mental Health Services KW - Professional Identity KW - 2005 DO - 10.1037/h0087028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-14076-004&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - GEN AU - Hagstad, David T1 - Bound for Iraq. JO - American Journal of Nursing JF - American Journal of Nursing Y1 - 2005/10// VL - 105 IS - 10 M3 - Letter SP - 78 EP - 79 SN - 0002936X AB - Presents the article author's, master sergeant in the Louisiana Air National Guard, United States Air Force, views on various issues before leaving home to serve in Iraq. Details of his colleagues and uniform for his assignment in Iraq; Briefings attended by him given by various squadrons about current threats in Iraq; Description of the facilities provided by the U.S. Airforce Expeditionary Medical Support System in Iraq. KW - MILITARY personnel KW - SOLDIERS' letters KW - WAR KW - MEDICAL personnel KW - UNITED States. Air Force KW - UNITED States N1 - Accession Number: 18532234; Hagstad, David 1; Email Address: david•in•balad@yahoo.com; Source Information: Oct2005, Vol. 105 Issue 10, p78; Subject: MILITARY personnel; Subject: SOLDIERS' letters; Subject: WAR; Subject: MEDICAL personnel; Subject: UNITED States. Air Force; Geographic Terms: UNITED States; Number of Pages: 2p; Document Type: Letter UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=18532234&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Marcum, S.D. AU - Ganguly, B.N. T1 - Electric-field-induced flame speed modification JO - Combustion & Flame JF - Combustion & Flame Y1 - 2005/10// VL - 143 IS - 1/2 M3 - Article SP - 27 EP - 36 SN - 00102180 AB - Abstract: The effects of pulsed and continuous DC electric fields on the reaction zones of premixed propane–air flames have been investigated using several types of experimental measurements. All observed effects on the flame are dependent on the applied voltage polarity, indicating that negatively charged flame species do not play a role in the perturbation of the reaction zone. Experiments designed to characterize the electric-field-induced modifications of the shape and size of the inner cone, and the concomitant changes in the temperature profiles of flames with equivalence ratios between 0.8 and 1.7, are also reported. High-speed two-dimensional imaging of the flame response to a pulsed DC voltage shows that the unperturbed conical flame front (laminar flow) is driven into a wrinkled laminar flamelet (cellular) geometry on a time scale of the order of 5 ms. Temperature distributions derived from thin filament pyrometry (TFP) measurements in flames perturbed by continuous DC fields show similar large changes in the reaction zone geometry, with no change in maximum flame temperature. All measurements are consistent with the observed flame perturbations being a fluid mechanical response to the applied field brought about by forcing positive flame ions counter to the flow. The resulting electric pressure decreases Lewis numbers of the ionic species and drives the effective flame Lewis number below unity. The observed increases in flame speed and the flame fronts trend toward turbulence can be described in terms of the flame front wrinkling and concomitant increase in reaction sheet area. This effect is a potentially attractive means of controlling flame fluid mechanical characteristics. The observed effects require minimal input electrical power (<1 W for a 1 kW burner) due to the much better electric field coupling achieved in the present experiments compared to the previous studies. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Electric fields KW - Fluid dynamics KW - Laminar flow KW - Electromagnetic fields KW - Electric field KW - Flame speed KW - Hydrocarbon combustion N1 - Accession Number: 18344032; Marcum, S.D. 1; Ganguly, B.N. 2; Email Address: biswa.ganguly@wpafb.af.mil; Affiliations: 1: Department of Physics, Miami University, Oxford, OH 45056, USA; 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Issue Info: Oct2005, Vol. 143 Issue 1/2, p27; Subject Term: Electric fields; Subject Term: Fluid dynamics; Subject Term: Laminar flow; Subject Term: Electromagnetic fields; Author-Supplied Keyword: Electric field; Author-Supplied Keyword: Flame speed; Author-Supplied Keyword: Hydrocarbon combustion; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.combustflame.2005.04.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=18344032&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Madero-Craven, Monica AU - Herzinger, Kurt T1 - Apery Sets of Numerical Semigroups #. JO - Communications in Algebra JF - Communications in Algebra J1 - Communications in Algebra PY - 2005/10// Y1 - 2005/10// VL - 33 IS - 10 M3 - Article SP - 3831 EP - 3838 SN - 00927872 AB - Let S be a numerical semigroup. We examine a particular subset of the Apery set of S and establish a correspondence between this subset and the holes of S . This correspondence allows us to establish conditions for S to be almost symmetric. [ABSTRACT FROM AUTHOR] AB - Copyright of Communications in Algebra is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMIGROUPS (Algebra) KW - GROUP theory KW - ALGEBRA KW - MATHEMATICS KW - MATHEMATICAL analysis N1 - Accession Number: 18711265; Source Information: Oct2005, Vol. 33 Issue 10, p3831; Subject Term: SEMIGROUPS (Algebra); Subject Term: GROUP theory; Subject Term: ALGEBRA; Subject Term: MATHEMATICS; Subject Term: MATHEMATICAL analysis; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.1080/00927870500242942 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=18711265&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Noel, Jeremy B. AU - Bauer Jr., Kenneth W. AU - Lanning, Jeffrey W. T1 - Improving pilot mental workload classification through feature exploitation and combination: a feasibility study. JO - Computers & Operations Research JF - Computers & Operations Research Y1 - 2005/10// VL - 32 IS - 10 M3 - Article SP - 2713 EP - 2730 SN - 03050548 AB - Predicting high pilot mental workload is important to the United States Air Force because lives and aircraft have been lost due to errors made during periods of flight associated with mental overload and task saturation. Current research efforts use psychophysiological measures such as electroencephalography (EEG), cardiac, ocular, and respiration measures in an attempt to identify and predict mental workload levels. Existing classification methods successfully classify pilot mental workload using flight data for a single pilot on a given day, but are unsuccessful across different pilots and/or days. We demonstrate a small subset of combined and calibrated psychophysiological features collected from a single pilot on a given day that accurately classifies mental workload for a separate pilot on a different day. We achieve classification accuracy (CA) improvements over previous classifiers exceeding 80% while using significantly fewer features and dramatically reducing the CA variance. Without the need for EEG data, our feature combination and calibration scheme also radically reduces the raw data collection requirements, making data collection immensely easier to manage and spectacularly reducing computational processing requirements. [ABSTRACT FROM AUTHOR] AB - Copyright of Computers & Operations Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIR pilots KW - AVIATION psychology KW - PILOTS & pilotage KW - AIRMEN KW - UNITED States KW - Artificial neural network KW - Backpropagation KW - Feature calibration KW - Feature combination KW - Feature exploitation KW - Feature identification and classification KW - Feature saliency KW - Feature space KW - Mental workload KW - Pilot workload KW - Signal-to-noise ratio (SNR) KW - UNITED States. Air Force -- Airmen N1 - Accession Number: 16754132; Noel, Jeremy B. 1; Bauer Jr., Kenneth W. 1; Email Address: Kenneth.Bauer@afit.af.mic; Lanning, Jeffrey W. 1; Affiliations: 1: Department of Operational Sciences, Air Force Institute of Technology, United States Air Force, A FIT/ENS, 2950 P Street, Wright-Patterson AFB, OH, 45433-7765, USA; Issue Info: Oct2005, Vol. 32 Issue 10, p2713; Thesaurus Term: AIR pilots; Subject Term: AVIATION psychology; Subject Term: PILOTS & pilotage; Subject Term: AIRMEN; Subject: UNITED States; Author-Supplied Keyword: Artificial neural network; Author-Supplied Keyword: Backpropagation; Author-Supplied Keyword: Feature calibration; Author-Supplied Keyword: Feature combination; Author-Supplied Keyword: Feature exploitation; Author-Supplied Keyword: Feature identification and classification; Author-Supplied Keyword: Feature saliency; Author-Supplied Keyword: Feature space; Author-Supplied Keyword: Mental workload; Author-Supplied Keyword: Pilot workload; Author-Supplied Keyword: Signal-to-noise ratio (SNR) ; Company/Entity: UNITED States. Air Force -- Airmen; NAICS/Industry Codes: 488330 Navigational Services to Shipping; NAICS/Industry Codes: 488332 Ship piloting services; Number of Pages: 18p; Illustrations: 1 Chart, 6 Graphs; Document Type: Article L3 - 10.1016/j.cor.2004.03.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=16754132&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Tyo, J. Scott AU - Farr, Everett G. AU - Lawry, Dean I. T1 - Effect of Defocus on the Prompt Response of a Reflector IRA. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2005/10// Y1 - 2005/10// VL - 53 IS - 10 M3 - Article SP - 3247 EP - 3254 SN - 0018926X AB - Impulse radiating antennas (IRAs) are an emerging class of antenna that are designed to radiate extremely short electromagnetic pulses with multiple decades of instantaneous band-width. The most common IRAs are made with a transverse electromagnetic (TEM) transmission line feeding a paraboloidal reflector. The IRA is usually constructed so that the electrical feed point of the TEM transmission line coincides with the focal point of the paraboloid. The paraboloidal reflector converts the spherical wave emanating from the feed point into a plane wave (i.e., a spherical wave centered at - ∞). In many practical cases, the feed point and focal points are not exactly aligned, producing some defocus of the reflector. In this paper, we model the case of hyperbolic defocus because of its analytic form and compare this model with experimental measurements. A hyperboloidal reflector fed from one focus converts the expanding spherical wave into a second expanding wave which appears to emanate from the second focal point of the hyperboloid (which is behind the reflector). Hyperboloidal defocus is roughly equivalent to moving the electrical feed closer to the reflector than the optical focal point. Previous theoretical results from in-focus IRAs predicted that the E- and H-plane temporal responses should be symmetric with respect to the temporal center of the response. The results shown here demonstrate that the defocusing causes these responses to become asymmetric. The new results are in better agreement with experimental measurements of IRAs and provide a physical explanation for experimental results that differ from the original theory. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNAS (Electronics) KW - ELECTRONIC apparatus & appliances KW - RADIATION KW - ELECTROMAGNETIC pulses KW - COMPTON effect KW - ELECTRIC lines N1 - Accession Number: 18580311; Source Information: Oct2005, Vol. 53 Issue 10, p3247; Subject Term: ANTENNAS (Electronics); Subject Term: ELECTRONIC apparatus & appliances; Subject Term: RADIATION; Subject Term: ELECTROMAGNETIC pulses; Subject Term: COMPTON effect; Subject Term: ELECTRIC lines; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.1109/TAP.2005.856322 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=18580311&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Thors, Björn AU - Steyskal, Hans AU - Holter, Henrik T1 - Broad-Band Fragmented Aperture Phased Array Element Design Using Genetic Algorithms. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2005/10// Y1 - 2005/10// VL - 53 IS - 10 M3 - Article SP - 3280 EP - 3287 SN - 0018926X AB - In this paper, a synthesis procedure to design thin broad-band fragmented aperture array elements is described. The arrays are assumed to be infinite periodic and the elements consist of a conducting pattern etched on a dielectric backed by a groundplane. A genetic algorithm (GA) is used to design the conducting pattern, relative permittivity, and thickness of the dielectric substrate with respect to array scan and bandwidth performance. The fitness function in the GA is evaluated using a finite-difference time-domain code with periodic boundary conditions. For a substrate thicker than about 0.1 λL (λL = wavelength at the lowest frequency in the frequency band investigated), it was found that a bandwidth of at least one octave can be obtained for arrays scanned within 45° from broadside. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHASED array antennas KW - GENETIC algorithms KW - ANTENNAS (Electronics) KW - FINITE differences KW - WAVELENGTHS KW - DIELECTRICS N1 - Accession Number: 18580315; Source Information: Oct2005, Vol. 53 Issue 10, p3280; Subject Term: PHASED array antennas; Subject Term: GENETIC algorithms; Subject Term: ANTENNAS (Electronics); Subject Term: FINITE differences; Subject Term: WAVELENGTHS; Subject Term: DIELECTRICS; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.1109/TAP.2005.856340 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=18580315&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Samn, Sherwood W. T1 - Modeling Dispersive Dielectric Media in FDTD: A Systematic Approach. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2005/10// Y1 - 2005/10// VL - 53 IS - 10 M3 - Article SP - 3367 EP - 3373 SN - 0018926X AB - Two popular and distinct methods to model dispersive dielectric media in finite-difference time domain are the piece-wise linear recursive convolution approach and the auxiliary differential equation approach. As they are used to model the same phenomenon and address the same equations, it is reasonable to think there is a close connection between the two. As a result of exploring this connection, we propose a new approach that can be seen as an extension of the two methods and thus, to some extent, serves to unify the two. In addition, the new approach has the advantages of being 1) more systematic—allowing the treatment of different types of dispersive dielectric media in the same manner—and 2) less ad hoc—the so-called recursive accumulators can be identified naturally and automatically. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRICS KW - DIFFERENTIAL equations KW - FINITE differences KW - TIME-domain analysis KW - STORAGE batteries KW - ELECTROMAGNETISM N1 - Accession Number: 18580326; Source Information: Oct2005, Vol. 53 Issue 10, p3367; Subject Term: DIELECTRICS; Subject Term: DIFFERENTIAL equations; Subject Term: FINITE differences; Subject Term: TIME-domain analysis; Subject Term: STORAGE batteries; Subject Term: ELECTROMAGNETISM; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TAP.2005.856318 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=18580326&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Morath, Christian P. AU - Vaccaro, Kenneth AU - Buchwald, Walter AU - Clark, William R. T1 - Comparator-Based Measurement Scheme for Dark-Count Rates in Single Photon Avalanche Diodes. JO - IEEE Transactions on Instrumentation & Measurement JF - IEEE Transactions on Instrumentation & Measurement J1 - IEEE Transactions on Instrumentation & Measurement PY - 2005/10// Y1 - 2005/10// VL - 54 IS - 5 M3 - Article SP - 2020 EP - 2026 SN - 00189456 AB - III-V single photon avalanche diode (SPAD) sensitivity at wavelengths > 1 μm typically comes at the expense of higher dark-count rates and afterpulsing compared to silicon SPADs. Regarding the measurement of dark-count rates, conventional counters are limited by the deadtime required to quell afterpulsing effects; this led to the adoption of time-correlated single photon counting (TCSPC). In this paper, a new technique for measuring the dark-count rates encountered in III-V SPADs using only a comparator and an averaging oscilloscope is reported. A detailed explanation of the technique is presented along with a semianalytical proof, simulation results comparing the technique's validity in comparison to TCSPC, and example measurements. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Instrumentation & Measurement is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTONS KW - OSCILLOSCOPES KW - ELECTRONIC instruments KW - ENGINEERING instruments KW - INDUSTRIAL electronics KW - ELECTRONICS N1 - Accession Number: 18592744; Source Information: Oct2005, Vol. 54 Issue 5, p2020; Subject Term: PHOTONS; Subject Term: OSCILLOSCOPES; Subject Term: ELECTRONIC instruments; Subject Term: ENGINEERING instruments; Subject Term: INDUSTRIAL electronics; Subject Term: ELECTRONICS; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TIM.2005.853347 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=18592744&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kirkland, Anthony B. T1 - O Magnum Mysterium for Brass Ensemble. JO - ITG Journal JF - ITG Journal Y1 - 2005/10// VL - 30 IS - 1 M3 - Entertainment Review SP - 76 EP - 77 SN - 03632849 AB - The article reviews the music release "O Magnum Mysterium for Brass Ensemble," by Morten Lauridsen. KW - INSTRUMENTAL music -- Reviews KW - ORCHESTRAL music KW - MUSIC KW - LAURIDSEN, Morten KW - O Magnum Mysterium for Brass Ensemble (Music) N1 - Accession Number: 20954876; Kirkland, Anthony B. 1; Affiliations: 1 : The United States Air Force Band, Washington, D.C.; Source Info: Oct2005, Vol. 30 Issue 1, p76; Subject Term: INSTRUMENTAL music -- Reviews; Subject Term: ORCHESTRAL music; Subject Term: MUSIC; Number of Pages: 2p; Document Type: Entertainment Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=20954876&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR AU - Eapen, Kalathil C. AU - Patton, Steven T. AU - Smaliwood, Steven A. AU - Phillips, Benjamin S. AU - Zabinski, Jeffrey S. T1 - MEMS Lubricants Based on Bound and Mobile Phases of Hydrocarbon Compounds: Film Deposition and Performance Evaluation. JO - Journal of Microelectromechanical Systems JF - Journal of Microelectromechanical Systems J1 - Journal of Microelectromechanical Systems PY - 2005/10// Y1 - 2005/10// VL - 14 IS - 5 M3 - Article SP - 954 EP - 960 SN - 10577157 AB - The concept of a thin layer of mobile hydrocarbon-based lubricant providing protection by replenishment to a surface already protected by a chemically bound material has been explored for the first time, for application to silicon-based microelectromechanical (MEMS) systems. Several bound/mobile pairs of lubricants were evaluated to study the effects of bound phase end group and mobile phase chemical functionality on wettability and performance. The bound species studied were derived from 1-decanol and 1,7-heptanediol. Mobile phases investigated were, a pentaerythritol ester, a multiply alkylated cyclopentane, Pennzane, and a polysilane developed for spacecraft application. Hydrocarbon lubricant performance was evaluated using electrostatic motors run in dry air, and was compared with that provided by Fomblin Zdol under identical conditions. Motors with hydrocarbon coatings showed substantial improvement in performance over uncoated motors, and for some bound/mobile pairs, was equal to Zdol within experimental error. We believe that for silicon-based devices, hydrocarbon coatings will be preferable at least for some applications, as the degradation observed due to aging of a fluorinated lubricant in direct contact with a silicon surface is absent. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microelectromechanical Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTROMECHANICAL systems KW - COATING processes KW - SURFACES (Technology) KW - THIN films KW - SILICON KW - SYNTHETIC lubricants N1 - Accession Number: 18631479; Source Information: Oct2005, Vol. 14 Issue 5, p954; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: COATING processes; Subject Term: SURFACES (Technology); Subject Term: THIN films; Subject Term: SILICON; Subject Term: SYNTHETIC lubricants; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/JMEMS.2005.851806 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=18631479&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR T1 - Risk Determination for Patients With Direct Access to Physical Therapy in Military Health Care Facilities. AU - Moore, Josef H. AU - McMillian, Danny J. AU - Rosenthal, Michael D. AU - Weishaar, Marc D. JO - Journal of Orthopaedic & Sports Physical Therapy JF - Journal of Orthopaedic & Sports Physical Therapy Y1 - 2005/10// VL - 35 IS - 10 SP - 674 EP - 678 CY - ; SN - 01906011 N1 - Accession Number: SPHS-999757; Author: Moore, Josef H.: 1 email: josef.moore@us.army.mil. Author: McMillian, Danny J.: 2 Author: Rosenthal, Michael D.: 3 Author: Weishaar, Marc D.: 4 ; Author Affiliation: 1 Associate Professor and Director, US Army-Baylor University Doctoral Program in Physical Therapy, Fort Sam Houston, TX, USA: 2 Chief of Physical Therapy-Sports Medicine, US Army Health Clinic, Mannheim, Germany: 3 Chief, Physical Therapy, Naval Special Warfare Center, San Diego, CA, USA: 4 Officer in Charge, Cadet Physical Therapy Clinic, US Air Force Academy, Colorado Springs, CO, USA; No. of Pages: 5; Language: English; Parent Item: SPHP1980; References: 17; General Notes: Research report. Special issue: Direct Access Physical Therapy - Part I.; Publication Type: Article; Material Type: PRINT; Update Code: 20051201; SIRC Article No.: S-999757 N2 - Study Design: Nonexperimental, retrospective, descriptive design. Objectives: This study was designed to ascertain whether direct access to physical therapy placed military health care beneficiaries at risk for adverse events related to their management. Background: Military health care beneficiaries have the option at most US military hospitals and clinics to first enter the health care system through physical therapy by direct access, without referral from another privileged health care provider. This level of autonomous practice incurs broad responsibilities and raises concern regarding the delivery of safe, competent, and appropriate patient care administered by physical therapists (PTs) when patients are not first examined and then referred by a physician or other privileged health care provider. While military PTs practice autonomously in a variety of health care settings, they do not work independently within any facility. Military PTs and physicians rely on one another for sharing and collaboration of information regarding patient care and clinical research as warranted. Additionally, physicians indirectly supervise military PTs. Methods and Measures: To reduce provider bias, a retrospective analysis was performed at 25 military health care sites (6 Army, 11 Navy, and 8 Air Force) on patients seen in physical therapy from October 1999 through January 2003. During this 40-month period, 95 PTs (88 military and 7 civilian) were credentialed to provide care throughout the various medical sites. Descriptive statistics were analyzed for total workload, number of new patients seen with and without referral, documented patient adverse events reported to each facility's Risk Management Office, and any disciplinary or legal action against a physical therapist. Results: During the 40-month observation period, 472 013 patient visits were recorded. Of these, 112 653 (23.9 %) were new patients, with 50 799 (45.1 %) of the new patients seen through direct access without physician referral. Throughout the 40-month data collection period, there were no reported adverse events resulting from the PTs' diagnoses or management, regardless of how patients accessed physical therapy services. Additionally, none of the PTs had their credentials or state licenses modified or revoked for disciplinary action. There also had been no litigation cases filed against the US Government involving PTs during the same period. Conclusions: The findings from this preliminary study clearly demonstrate that patients seen in military health care facilities are at minimal risk for gross negligent care when evaluated and managed by PTs, with or without physician referral. The significance of these findings with respect to direct access is important for not only our beneficiaries but also our profession and the facilities in which we practice. [ABSTRACT FROM AUTHOR] KW - *MEDICAL care KW - *PHYSICAL therapy KW - *THERAPEUTICS KW - *DRUGS -- Side effects KW - ARMED Forces KW - RISK KW - RETROSPECTIVE STUDY KW - LIABILITY L2 - http://articles.sirc.ca/search.cfm?id=S-999757 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=SPHS-999757&site=ehost-live&scope=site UR - http://articles.sirc.ca/search.cfm?id=S-999757 UR - http://www.apta.org/ DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 106450557 T1 - Management of partial-thickness rotator cuff tears. AU - Tokish JM AU - Ponce BA Y1 - 2005/10// N1 - Accession Number: 106450557. Language: English. Entry Date: 20060602. Revision Date: 20150711. Publication Type: Journal Article; diagnostic images; pictorial; review. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 9306118. KW - Rotator Cuff Injuries -- Diagnosis KW - Tears and Lacerations -- Diagnosis KW - Rotator Cuff Injuries -- Surgery KW - Tears and Lacerations -- Surgery KW - Arthroscopy -- Methods KW - Rotator Cuff Injuries -- Pathology KW - Rotator Cuff Injuries -- Classification KW - Magnetic Resonance Imaging KW - Physical Examination KW - Clinical Assessment Tools KW - Rotator Cuff Injuries -- Therapy KW - Decision Making, Clinical KW - Treatment Outcomes SP - 206 EP - 211 JO - Operative Techniques in Sports Medicine JF - Operative Techniques in Sports Medicine JA - OPER TECHNIQ SPORTS MED VL - 13 IS - 4 CY - Philadelphia, Pennsylvania PB - Elsevier Inc. AB - Partial-thickness rotator cuff tears are a common finding in the military population. Given that these lesions are often present in asymptomatic populations, it is important to perform a thorough history and physical examination along with selective injections to confirm or rule out the partial-thickness tear as a source of pain or dysfunction. Once the decision has been made to operatively treat these tears, a number of options exist, including debridement, repair in situ, or completion of the tear with subsequent repair. Selection between these options is dependent on the extent of the tear, the experience of the surgeon, and the goals of the patient. This article presents a brief discussion on tear recognition, classification, and diagnostic challenges, followed by the technical details behind arthroscopic repair. With careful attention to the clinical workup, and meticulous surgical technique, these tears can be successfully treated to return active duty patients and cadets back to full military duty. © 2005 Elsevier Inc. SN - 1060-1872 AD - Department of Orthopedics, United States Air Force Academy Hospital, 4102 Pinon Drive, Suite 100, USAFA, CO 80840; john.tokis@usafa.af.mil UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106450557&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Gursul, I. AU - Gordnier, R. AU - Visbal, M. T1 - Unsteady aerodynamics of nonslender delta wings JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences J1 - Progress in Aerospace Sciences PY - 2005/10// Y1 - 2005/10// VL - 41 IS - 7 M3 - Article SP - 515 EP - 557 SN - 03760421 AB - Abstract: Unsteady aerodynamics of nonslender delta wings, covering topics of shear layer instabilities, structure of nonslender vortices, breakdown, maneuvering wings, and fluid/structure interactions, are reviewed in this paper. Vortical flows develop at very low angles of attack, and form close to the wing surface. This results in strong interactions with the upper-surface boundary layer and in a pronounced dependence of the flow structure on Reynolds number. Vortex breakdown is observed to be much less abrupt compared to breakdown over slender wings. This results in challenges for the precise determination of vortex breakdown location and the interpretation of flow visualizations. One of the distinct features of nonslender wings is the location of the primary attachment zone outboard of the symmetry plane. Reattachment location correlates with the wing stall process and increased buffeting. Dramatic fluid/structure interactions emerge with increasing wing flexibility and result in substantial lift enhancement in the post-stall region. This recently discovered phenomenon appears to be a feature of nonslender wings. Rigid delta wings undergoing small amplitude oscillations in the post-stall region exhibit many similarities to flexible wings, including reattachment and re-formation of the leading-edge vortices. Unusual self-excited roll oscillations have also been observed for free-to-roll nonslender wings. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - WIND tunnels KW - FLUID dynamics KW - BOUNDARY layer (Meteorology) N1 - Accession Number: 19304999; Source Information: Oct2005, Vol. 41 Issue 7, p515; Subject Term: AERODYNAMICS; Subject Term: WIND tunnels; Subject Term: FLUID dynamics; Subject Term: BOUNDARY layer (Meteorology); Subject Term: ; Number of Pages: 43p; ; Document Type: Article; L3 - 10.1016/j.paerosci.2005.09.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19304999&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Vaia, Richard AU - Mirau, Peter AU - Alexander, Max AU - Koerner, Hilmar AU - Hsiao, Benjamin S. AU - Sics, Igor T1 - Morphology-deformation correlations in nanocomposites. JO - Rubber World JF - Rubber World Y1 - 2005/10// VL - 233 IS - 1 M3 - Article SP - 43 EP - 45 PB - Lippincott & Peto / Initial Publications SN - 00359572 AB - Focuses on the study of the nanotube deformation and polymer deformation. Discussion of the fabrication of the carbon nanotubes-polyurethane nanocomposite; Evaluation of the chemical composition of Morthane; Influence of the properties by a strain induced crystallization. KW - NANOTUBES KW - FULLERENES KW - POLYURETHANES KW - POLYMERS KW - CRYSTALLIZATION KW - PHYSICAL & theoretical chemistry N1 - Accession Number: 18917053; Vaia, Richard 1; Mirau, Peter 1; Alexander, Max 1; Koerner, Hilmar 2; Hsiao, Benjamin S. 3; Sics, Igor 3; Affiliations: 1: Air Force Research Laboratory, WPAFB, OOH; 2: University of Dayton Research Institute, WPAFB, OH; 3: State University of New York, Stony Brook; Issue Info: Oct2005, Vol. 233 Issue 1, p43; Subject Term: NANOTUBES; Subject Term: FULLERENES; Subject Term: POLYURETHANES; Subject Term: POLYMERS; Subject Term: CRYSTALLIZATION; Subject Term: PHYSICAL & theoretical chemistry; Number of Pages: 3p; Illustrations: 1 Diagram, 1 Chart, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=18917053&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Hussain, S.M. AU - Hess, K.L. AU - Gearhart, J.M. AU - Geiss, K.T. AU - Schlager, J.J. T1 - In vitro toxicity of nanoparticles in BRL 3A rat liver cells JO - Toxicology in Vitro JF - Toxicology in Vitro Y1 - 2005/10// VL - 19 IS - 7 M3 - Article SP - 975 EP - 983 SN - 08872333 AB - Abstract: This study was undertaken to address the current deficient knowledge of cellular response to nanosized particle exposure. The study evaluated the acute toxic effects of metal/metal oxide nanoparticles proposed for future use in industrial production methods using the in vitro rat liver derived cell line (BRL 3A). Different sizes of nanoparticles such as silver (Ag; 15, 100nm), molybdenum (MoO3; 30, 150nm), aluminum (Al; 30, 103nm), iron oxide (Fe3O4; 30, 47nm), and titanium dioxide (TiO2; 40nm) were evaluated for their potential toxicity. We also assessed the toxicity of relatively larger particles of cadmium oxide (CdO; 1μm), manganese oxide (MnO2; 1–2μm), and tungsten (W; 27μm), to compare the cellular toxic responses with respect to the different sizes of nanoparticles with different core chemical compositions. For toxicity evaluations, cellular morphology, mitochondrial function (MTT assay), membrane leakage of lactate dehydrogenase (LDH assay), reduced glutathione (GSH) levels, reactive oxygen species (ROS), and mitochondrial membrane potential (MMP) were assessed under control and exposed conditions (24h of exposure). Results showed that mitochondrial function decreased significantly in cells exposed to Ag nanoparticles at 5–50μg/ml. However, Fe3O4, Al, MoO3 and TiO2 had no measurable effect at lower doses (10–50μg/ml), while there was a significant effect at higher levels (100–250μg/ml). LDH leakage significantly increased in cells exposed to Ag nanoparticles (10–50μg/ml), while the other nanoparticles tested displayed LDH leakage only at higher doses (100–250μg/ml). In summary the Ag was highly toxic whereas, MoO3 moderately toxic and Fe3O4, Al, MnO2 and W displayed less or no toxicity at the doses tested. The microscopic studies demonstrated that nanoparticle-exposed cells at higher doses became abnormal in size, displaying cellular shrinkage, and an acquisition of an irregular shape. Due to toxicity of silver, further study conducted with reference to its oxidative stress. The results exhibited significant depletion of GSH level, reduced mitochondrial membrane potential and increase in ROS levels, which suggested that cytotoxicity of Ag (15, 100nm) in liver cells is likely to be mediated through oxidative stress. [Copyright &y& Elsevier] AB - Copyright of Toxicology in Vitro is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Metallic oxides KW - Nanoparticles KW - Manganese oxides KW - Tungsten KW - Cell morphology KW - Lactate dehydrogenase KW - Glutathione KW - In vitro toxicity KW - Oxidative stress N1 - Accession Number: 19496193; Hussain, S.M. 1; Email Address: saber.hussain@wpafb.af.mil; Hess, K.L. 2; Gearhart, J.M. 3; Geiss, K.T. 4; Schlager, J.J. 1; Affiliations: 1: Applied Biotechnology, Air Force Research Laboratory/HEPB, Wright-Patterson AFB, OH, USA; 2: Geo-Centers, Inc., Wright-Patterson AFB, OH, USA; 3: Alion Science & Technology, Wright-Patterson AFB, P.O. Box 31009, Dayton, OH 45431-0009, USA; 4: Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Issue Info: Oct2005, Vol. 19 Issue 7, p975; Thesaurus Term: Metallic oxides; Subject Term: Nanoparticles; Subject Term: Manganese oxides; Subject Term: Tungsten; Subject Term: Cell morphology; Subject Term: Lactate dehydrogenase; Subject Term: Glutathione; Author-Supplied Keyword: In vitro toxicity; Author-Supplied Keyword: Oxidative stress; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.tiv.2005.06.034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=19496193&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2005-14359-001 AN - 2005-14359-001 AU - Geri, George A. AU - Winterbottom, Marc D. T1 - Effect of display resolution and antialiasing on the discrimination of simulated-aircraft orientation. JF - Displays JO - Displays JA - Displays Y1 - 2005/10// VL - 26 IS - 4-5 SP - 159 EP - 169 CY - Netherlands PB - Elsevier Science SN - 0141-9382 AD - Geri, George A., Link Simulation and Training, 6030 S. Kent Street, Mesa, AZ, US, 85212 N1 - Accession Number: 2005-14359-001. Partial author list: First Author & Affiliation: Geri, George A.; Link Simulation and Training, Mesa, AZ, US. Release Date: 20060327. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft; Displays; Flight Simulation; Perceptual Discrimination; Performance. Minor Descriptor: Perceptual Orientation. Classification: Human Factors Engineering (4010). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study; Scientific Simulation. References Available: Y. Page Count: 11. Issue Publication Date: Oct, 2005. AB - In Experiment 1, antialiasing was found to improve performance on an orientation-discrimination task, whereas increasing display pixel-count did not. The latter finding was attributed to a decrease in image contrast associated with driving the CRT beyond its effective bandwidth. In Experiment 2, it was found that display resolution is the primary determinant of orientation-discrimination performance. This performance was not significantly improved by increasing antialiasing beyond a minimal level, suggesting that greater image detail can be substituted for antialias filtering. Finally, data obtained from an objective target-size calibration showed that nominal target size often does not accurately reflect the size (and hence distance) of simulated targets. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - display resolution KW - aircraft orientation KW - discrimination task KW - orientation discrimination performance KW - flight simulation KW - antialiasing KW - 2005 KW - Aircraft KW - Displays KW - Flight Simulation KW - Perceptual Discrimination KW - Performance KW - Perceptual Orientation KW - 2005 U1 - Sponsor: US Air Force, US. Grant: F41624-97-C-5000. Other Details: Link Simulation and Training (a division of L-3 Communications Corp.). Recipients: No recipient indicated DO - 10.1016/j.displa.2005.06.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-14359-001&site=ehost-live&scope=site UR - george.geri@mesa.afmc.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-11348-008 AN - 2006-11348-008 AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Optimizing the Spatial Configuration of a Seven-Talker Speech Display. JF - ACM Transactions on Applied Perception JO - ACM Transactions on Applied Perception JA - ACM Trans Appl Percept Y1 - 2005/10// VL - 2 IS - 4 SP - 430 EP - 436 CY - US PB - ACM - Association for Computing Machinery SN - 1544-3558 AD - Brungart, Douglas S., Air Force Research Laboratory, AFRL/HECB, 2610 Seventh Street, WPAFB, OH, US, 45433 N1 - Accession Number: 2006-11348-008. Partial author list: First Author & Affiliation: Brungart, Douglas S.; Human Effectiveness Directorate, Air Force Research Laboratory, OH, US. Release Date: 20061030. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Oral Communication; Spatial Organization; Speech Characteristics. Classification: Auditory & Speech Perception (2326). Population: Human (10). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 7. Issue Publication Date: Oct, 2005. AB - Although there is substantial evidence that performance in multitalker listening tasks can be improved by spatially separating the apparent locations of the competing talkers, very little effort has been made to determine the best locations and presentation levels for the talkers in a multichannel speech display. In this experiment, a call sign based color and number identification task was used to evaluate the effectiveness of three different spatial configurations and two different level normalization schemes in a seven-channel binaural speech display. When only two spatially adjacent channels of the seven-channel system were active, overall performance was substantially better with a geometrically spaced spatial configuration (with far-field talkers at -90°, -30°, -10°, 0°, +10°, +30°, and +90° azimuth) or a hybrid near-far configuration (with far-field talkers at -90°, -30°, 0°, +30°, and +90° azimuth and near-field talkers at ±90°) than with a more conventional linearly spaced configuration (with far-field talkers at -90°, -60°, -30°, 0°, +30°, +60°, and +90° azimuth). When all seven channels were active, performance was generally better with a 'better-ear' normalization scheme that equalized the levels of the talkers in the more intense ear than with a default normalization scheme that equalized the levels of the talkers at the center of the head. The best overall performance in the seven-talker task occurred when the hybrid near-far spatial configuration was combined with the better-ear normalization scheme. This combination resulted in a 20% increase in the number of correct identifications relative to the baseline condition with linearly spaced talker locations and no level normalization. Although this is a relatively modest improvement, it should be noted that it could be achieved at little or no cost simply by reconfiguring the HRTFs used in a multitalker speech display. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - spatial configurations KW - multitalker listening tasks KW - speech display KW - 2005 KW - Oral Communication KW - Spatial Organization KW - Speech Characteristics KW - 2005 U1 - Sponsor: AFOSR, LRIR. Grant: Ol-HE-01-COR. Recipients: No recipient indicated DO - 10.1145/1101530.1101538 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-11348-008&site=ehost-live&scope=site UR - Douglas.Brungart@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-11348-009 AN - 2006-11348-009 AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Optimizing a Virtual Speech Display: Comments on Brungart and Simpson, ICAD 2003. JF - ACM Transactions on Applied Perception JO - ACM Transactions on Applied Perception JA - ACM Trans Appl Percept Y1 - 2005/10// VL - 2 IS - 4 SP - 437 EP - 441 CY - US PB - ACM - Association for Computing Machinery SN - 1544-3558 AD - Brungart, Douglas S., Air Force Research Laboratory, AFRL/HECB, 2610 Seventh Street, WPAFB, OH, US, 45433 N1 - Accession Number: 2006-11348-009. Partial author list: First Author & Affiliation: Brungart, Douglas S.; Human Effectiveness Directorate, Air Force Research Laboratory, OH, US. Release Date: 20061030. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Comment/Reply. Language: English. Major Descriptor: Oral Communication; Spatial Organization; Speech Characteristics. Classification: Auditory & Speech Perception (2326). Population: Human (10). References Available: Y. Page Count: 5. Issue Publication Date: Oct, 2005. AB - In our 2003 ICAD Paper 'Optimizing the Spatial Configuration of a Seven Talker Speech Display,' (see record [rid]2006-11348-008[/rid]) we described a hybrid near-far spatial configuration that maximizes performance in a multitalker listening task. In this brief addendum, we describe our scientific motivation for that study, describe a supplementary experiment that extended the earlier work to two additional spatial configurations, and place the results of the study in the context of current and future research in audio displays. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - spatial configurations KW - multitalker listening tasks KW - speech display KW - 2005 KW - Oral Communication KW - Spatial Organization KW - Speech Characteristics KW - 2005 DO - 10.1145/1101530.1101539 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-11348-009&site=ehost-live&scope=site UR - Douglas.Brungart@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Delcomyn, Carrie A. AU - MacLean, H. Scott AU - Henley, Michael V. AU - Renard, Jean J. T1 - Determination of in situ-generated dimethyldioxirane from an aqueous matrix using selected ion monitoring JO - Journal of Chromatography A JF - Journal of Chromatography A Y1 - 2005/09/30/ VL - 1089 IS - 1/2 M3 - Article SP - 211 EP - 218 SN - 00219673 AB - Abstract: There is a growing interest in utilizing in situ-generated dimethyldioxirane (DMDO) as an oxidant for synthetic purposes and bleaching and decontamination applications, but the ability to quantify the organic cyclic peroxide species is often complicated by the presence of other reactive components, peroxymonosulfate and acetone, within the solution matrix. This paper is the first to report the use of a MS method for the quantitation of DMDO from these complex matrices by utilizing an isothermal 30°C GC program in conjunction with selected ion monitoring (SIM). The volatile organic species is sampled from the headspace of closed batch system vials and quantified by measuring the abundance of m/z 74. The method achieves a practical quantitation limit (PQL) for DMDO of 0.033mM, and methyl acetate is identified as a minor decomposition product from the aqueous sample matrix, contributing 9% towards the overall DMDO measurements. The spectroscopic method makes use of common analytical instrumentation and is capable of measuring other in situ-generated dioxiranes, such as those generated from 2-butanone and [2H6]acetone. [Copyright &y& Elsevier] AB - Copyright of Journal of Chromatography A is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Acetone KW - Technical chemistry KW - Methyl ethyl ketone KW - Dyes & dyeing KW - Programming languages (Electronic computers) KW - Dimethyldioxirane KW - Dioxiranes KW - Headspace sampling KW - In situ KW - Methyl acetate KW - Oxidant KW - Quantitation KW - Selected ion monitoring (SIM) N1 - Accession Number: 18162492; Delcomyn, Carrie A. 1; Email Address: carrie.delcomyn.ctr@tyndall.af.mil; MacLean, H. Scott 1; Henley, Michael V. 2; Renard, Jean J. 1; Affiliations: 1: Applied Research Associates Inc., Air Force Research Laboratory, 139 Barnes Drive, Tyndall AFB, FL 32403, USA; 2: Air Force Research Laboratory, Materials & Manufacturing Directorate, 139 Barnes Drive, Tyndall Air Force Base, FL 32403, USA; Issue Info: Sep2005, Vol. 1089 Issue 1/2, p211; Thesaurus Term: Acetone; Thesaurus Term: Technical chemistry; Thesaurus Term: Methyl ethyl ketone; Subject Term: Dyes & dyeing; Subject Term: Programming languages (Electronic computers); Author-Supplied Keyword: Dimethyldioxirane; Author-Supplied Keyword: Dioxiranes; Author-Supplied Keyword: Headspace sampling; Author-Supplied Keyword: In situ; Author-Supplied Keyword: Methyl acetate; Author-Supplied Keyword: Oxidant; Author-Supplied Keyword: Quantitation; Author-Supplied Keyword: Selected ion monitoring (SIM); NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325130 Synthetic Dye and Pigment Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 511210 Software Publishers; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.chroma.2005.06.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=18162492&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - GEN AU - DeAngeleis, Valerie E. T1 - DECEIVING OURSELVES. JO - Armed Forces Journal JF - Armed Forces Journal J1 - Armed Forces Journal PY - 2005/09// Y1 - 2005/09// VL - 143 IS - 2 M3 - Letter SP - 6 EP - 6 SN - 1559162X AB - Presents a letter to the editor in response to the article "The Case for Human Intelligence," by Ralph Peters, published in the July 2005 issue of the "Armed Forces Journal." KW - LETTERS to the editor KW - MILITARY intelligence N1 - Accession Number: 18186125; Source Information: Sep2005, Vol. 143 Issue 2, p6; Subject Term: LETTERS to the editor; Subject Term: MILITARY intelligence; Subject Term: ; Number of Pages: 1/6p; ; Document Type: Letter; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=18186125&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Chakravarthy, Vasu AU - Nunez, Abel S. AU - Stephens, James P. AU - Shaw, Arnab K. AU - Temple, Michael A. T1 - TDCS, OFDM, and MC-CDMA: A Brief Tutorial. JO - IEEE Communications Magazine JF - IEEE Communications Magazine Y1 - 2005/09// VL - 43 IS - 9 M3 - Article SP - S11 EP - S16 SN - 01636804 AB - This article gives a brief tutorial on transform-domain communication system (TDCS), OFDM, and MC-CDMA. The primary goal of this article is to give a detailed description of the TDCS transmitter and receiver systems and to highlight the fundamental differences relative to OFDM and MC-CDMA. The fundamental idea in TDCS is to synthesize a smart adaptive waveform to avoid interference at the transmitter instead of the more traditional mitigating of interference at the receiver. Unlike OFDM and MC-CDMA, TDCS has very little exposure in the current literature. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Communications Magazine is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Telecommunication systems KW - Code division multiple access KW - Broadband communication systems KW - Radio transmitter-receivers KW - Spread spectrum communications KW - Orthogonal frequency division multiplexing N1 - Accession Number: 18352668; Chakravarthy, Vasu 1; Email Address: vasu.chakravarthy@wpafb.af.mil; Nunez, Abel S. 2; Stephens, James P. 1; Shaw, Arnab K. 3; Temple, Michael A. 4; Affiliations: 1: Electronic Engineer, Air Force Research Laboratory, Sensors Directorate.; 2: Project Engineer, Air Force Research Laboratory, Sensors Directorate.; 3: Professor, Electrical Engineering Department, Wright State University, Ohio.; 4: Associate Professor of Electrical Engineering, Air Force Institute of Technology.; Issue Info: Sep2005, Vol. 43 Issue 9, Special section pS11; Thesaurus Term: Telecommunication systems; Thesaurus Term: Code division multiple access; Thesaurus Term: Broadband communication systems; Thesaurus Term: Radio transmitter-receivers; Thesaurus Term: Spread spectrum communications; Subject Term: Orthogonal frequency division multiplexing; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 517410 Satellite Telecommunications; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=18352668&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Altshuler, Edward E. T1 - A Method for Matching an Antenna Having a Small Radiation Resistance to a 50-ohm Coaxial Line. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2005/09// Y1 - 2005/09// VL - 53 IS - 9 M3 - Article SP - 3086 EP - 3089 SN - 0018926X AB - It is shown that it is possible to match an antenna having a very low radiation resistance to a 50-ohm coaxial line using an inductive matching post near the base of the antenna. This technique is illustrated using two electrically small self-resonant genetic antennas. The input admittances of these antennas are simulated with and without the matching posts; the antennas are then fabricated and these results are verified experimentally. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNA radiation patterns KW - ANTENNAS (Electronics) KW - COAXIAL cables KW - RESONANT vibration KW - RADIATION measurements KW - COMBINATORIAL optimization N1 - Accession Number: 18352402; Source Information: Sep2005, Vol. 53 Issue 9, p3086; Subject Term: ANTENNA radiation patterns; Subject Term: ANTENNAS (Electronics); Subject Term: COAXIAL cables; Subject Term: RESONANT vibration; Subject Term: RADIATION measurements; Subject Term: COMBINATORIAL optimization; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1109/TAP.2005.854543 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=18352402&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Pajić, Srdjan AU - Narisi Wang AU - Watson, Paul M. AU - Quach, Tony K. AU - Popović, Zoya T1 - X-Band Two-Stage High-Efficiency Switched-Mode Power Amplifiers. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques J1 - IEEE Transactions on Microwave Theory & Techniques PY - 2005/09// Y1 - 2005/09// VL - 53 IS - 9 M3 - Article SP - 2899 EP - 2907 SN - 00189480 AB - This paper presents efficiency optimization of X-band two-stage microwave power amplifiers (PAs) in which the output stage is designed to operate in class-E mode. A hybrid PA which uses the same MESFET devices in both stages achieves 16 dB of saturated gain with an output power of 20 dBm and total power added efficiency (PAE) of 52% at 10 GHz. A broadband monolithic two-stage double heterojunction bipolar transistor PA, fabricated by Northrop Grumman Space Technology, with a class-AB first stage and class-E second stage achieves 24.6 dBm of output power with 24.6-dB gain and total PAE of 52% at 8 GHz. The design is performed starting from class-E theory and using load-pull measurements and/or nonlinear simulations. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC amplifiers KW - HETEROJUNCTIONS KW - SEMICONDUCTORS KW - BROADBAND communication systems KW - TRANSISTORS KW - MICROWAVES N1 - Accession Number: 18281724; Source Information: Sep2005, Vol. 53 Issue 9, p2899; Subject Term: ELECTRONIC amplifiers; Subject Term: HETEROJUNCTIONS; Subject Term: SEMICONDUCTORS; Subject Term: BROADBAND communication systems; Subject Term: TRANSISTORS; Subject Term: MICROWAVES; Subject Term: ; Number of Pages: 9p; ; Document Type: Article; L3 - 10.1109/TMTT.2005.854239 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=18281724&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Patel, Mehul P. AU - Kolacinski, Richard M. AU - Prince, Troy S. AU - Ng, T. Terry AU - Myatt, James H. T1 - Novel Hierarchical Modular Control Methodology for Closed-Loop Flow-Control Applications. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2005/09//Sep/Oct2005 Y1 - 2005/09//Sep/Oct2005 VL - 42 IS - 5 M3 - Article SP - 1099 EP - 1108 SN - 00218669 AB - A novel hierarchical modular control methodology using closed-loop flow control for active virtual shaping of aerodynamic surfaces is developed. Through wind tunnel experimentation and numerical simulation, we show that collocated sensor-actuator pairs and closed-loop feedback control can effectively modulate the local flow phenomenon and, furthermore, by coordinating the local flow phenomenon, macroscopic force and moment effects can be induced on the aerodynamic surface. The results of flow experiments at Mach 0.08 on a two-dimensional airfoil are used to construct a dynamic model of the effect of discrete suction actuators, and a closed-loop adaptive control system is designed to modulate the local flow phenomenon based on this model. A feedforward control system is then constructed to coordinate the behavior of multiple intelligent control modules, each composed of a collocated sensor-actuator pair and a closed-loop control system. In conclusion, we use a full six-degree-of-freedom numerical simulation to investigate the application of the aggregate system to tracking desired rolling and pitching moment trajectories via actuator-induced aeroshaping of the aerodynamic surfaces of an aircraft. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE control systems KW - AERODYNAMICS KW - WIND tunnels KW - ACTUATORS KW - AEROFOILS N1 - Accession Number: 18775403; Source Information: Sep/Oct2005, Vol. 42 Issue 5, p1099; Subject Term: AIRPLANE control systems; Subject Term: AERODYNAMICS; Subject Term: WIND tunnels; Subject Term: ACTUATORS; Subject Term: AEROFOILS; Subject Term: ; Number of Pages: 10p; ; Illustrations: 4 Diagrams, 1 Chart, 16 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=18775403&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Carrell, Scott E. AU - West, James E. AD - US Air Force Academy AD - US Air Force Academy T1 - Optimal Compensating Wages for Military Personnel JO - Journal of Policy Analysis and Management JF - Journal of Policy Analysis and Management Y1 - 2005///Fall VL - 24 IS - 4 SP - 803 EP - 822 SN - 02768739 N1 - Accession Number: 0808607; Keywords: Pay; Wage; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 200512 N2 - The current U.S. military pay structure offers inequitable and inefficient wages across locations. Military personnel are paid less competitive wages in high-cost and/or low-amenity locations compared to low-cost and/or high-amenity locations. This pay system results in unequal reenlistment rates across locations, which leads to production inefficiencies caused by short-term manning shortages in high-turnover locations. Wages set according to local civilian compensating wage differentials would result in a more stabilized force (across locations) by equalizing the opportunity cost of staying in the military at each location. Additionally, more personnel would volunteer to serve in the high-cost and/or low-amenity locations because wages would be more commensurate with local costs and amenities. This would result in fewer non-volunteer assignments to undesirable locations and a minimized opportunity cost for personnel serving at each location. Reenlistment simulations on first-term Air Force personnel show that the proposed wage structure would better equalize reenlistment rates across locations. This proposal could be implemented at no cost to the government by cutting wages in low-cost and/or high-amenity locations. A gradual implementation in which such wages are frozen or increased slowly may be more politically palatable. KW - Wage Level and Structure; Wage Differentials J31 L3 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291520-6688/issues UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0808607&site=ehost-live&scope=site UR - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291520-6688/issues DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 2005-13213-012 AN - 2005-13213-012 AU - Kotov, Roman AU - Schmidt, Norman B. AU - Lerew, Darin R. AU - Joiner, Thomas E. Jr. AU - Ialongo, Nicholas S. T1 - Latent structure of anxiety: Taxometric exploration. JF - Psychological Assessment JO - Psychological Assessment JA - Psychol Assess Y1 - 2005/09// VL - 17 IS - 3 SP - 369 EP - 374 CY - US PB - American Psychological Association SN - 1040-3590 SN - 1939-134X AD - Schmidt, Norman B., Florida State University, Department of Psychology, Tallahassee, FL, US, 32306 N1 - Accession Number: 2005-13213-012. PMID: 16262462 Other Journal Title: Psychological Assessment: A Journal of Consulting and Clinical Psychology. Partial author list: First Author & Affiliation: Kotov, Roman; Department of Psychology, University of Iowa, Iowa City, IA, US. Release Date: 20051031. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Anxiety; Psychometrics; Taxonomies. Classification: Psychometrics & Statistics & Methodology (2200); Neuroses & Anxiety Disorders (3215). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Tests & Measures: The Vulnerability Scale; Anxiety Impairment Scale; State Trait Anxiety Inventory; Beck Anxiety Inventory DOI: 10.1037/t02025-000; Beck Hopelessness Scale; Anxiety Sensitivity Index DOI: 10.1037/t00033-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 6. Issue Publication Date: Sep, 2005. Publication History: Accepted Date: Mar 22, 2005; Revised Date: Nov 9, 2004; First Submitted Date: Jun 11, 2003. Copyright Statement: American Psychological Association. 2005. AB - Taxometrics is a statistical tool that can be used to discern categories from continua. Taxometric analyses (MAXCOV and MAXEIG) were conducted in a large nonclinical sample (N=1,215) to determine whether extreme anxiety forms a distinct psychopathological category, an anxiety taxon. Anxiety was operationalized with self-report measures of subjective anxiety, anxious cognitive style, physiological arousal, and anxiety-related impairment. Procedures consistently identified a taxon with a prevalence of approximately 11%. Examination of the taxon's convergent and discriminant validity revealed that it reflects general distress rather than physiological arousal. Taxon membership showed some evidence of incremental validity. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - taxometrics KW - taxon KW - anxiety KW - general distress KW - 2005 KW - Anxiety KW - Psychometrics KW - Taxonomies KW - 2005 DO - 10.1037/1040-3590.17.3.369 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-13213-012&site=ehost-live&scope=site UR - schmidt@psy.fsu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-05325-003 AN - 2006-05325-003 AU - Gunn, Daniel V. AU - Warm, Joel S. AU - Nelson, W. Todd AU - Bolia, Robert S. AU - Schumsky, Donald A. AU - Corcoran, Kevin J. T1 - Target Acquisition With UAVs: Vigilance Displays and Advanced Cuing Interfaces. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2005///Fal 2005 VL - 47 IS - 3 SP - 488 EP - 497 CY - US PB - Human Factors & Ergonomics Society SN - 0018-7208 SN - 1547-8181 AD - Gunn, Daniel V., Microsoft Game Studios, One Microsoft Way, Redmond, WA, US, 98052 N1 - Accession Number: 2006-05325-003. PMID: 16435691 Partial author list: First Author & Affiliation: Gunn, Daniel V.; Microsoft Game Studios, Redmond, WA, US. Other Publishers: Sage Publications. Release Date: 20060522. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft; Human Factors Engineering; Signal Detection (Perception); Threat; Vigilance. Minor Descriptor: Automation; Cues; Task Analysis. Classification: Human Factors Engineering (4010); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Fal 2005. AB - Vigilance and threat detection are critical human factors considerations in the control of unmanned aerial vehicles (UAVs). Utilizing a vigilance task in which threat detections (critical signals) led observers to perform a subsequent manual target acquisition task, this study provides information that might have important implications for both of these considerations in the design of future UAV systems. A sensory display format resulted in more threat detections, fewer false alarms, and faster target acquisition times and imposed a lighter workload than did a cognitive display format. Additionally, advanced visual, spatial-audio, and haptic cuing interfaces enhanced acquisition performance over no cuing in the target acquisition phase of the task, and they did so to a similar degree. Thus, in terms of potential applications, this research suggests that a sensory format may be the best display format for threat detection by future UAV operators, that advanced cuing interfaces may prove useful in future UAV systems, and that these interfaces are functionally interchangeable. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - vigilance KW - threat detection KW - unmanned aerial vehicles KW - advanced cuing interfaces KW - critical signals KW - sensory display KW - cognitive display KW - 2005 KW - Aircraft KW - Human Factors Engineering KW - Signal Detection (Perception) KW - Threat KW - Vigilance KW - Automation KW - Cues KW - Task Analysis KW - 2005 U1 - Sponsor: Air Force Office of Scientific Research, New World Vistas Program. Recipients: No recipient indicated DO - 10.1518/001872005774859971 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-05325-003&site=ehost-live&scope=site UR - dgunn@microsoft.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-05325-009 AN - 2006-05325-009 AU - Brungart, Douglas S. AU - Kordik, Alexander J. AU - Simpson, Brian D. T1 - Audio and Visual Cues in a Two-Talker Divided Attention Speech-Monitoring Task. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2005///Fal 2005 VL - 47 IS - 3 SP - 562 EP - 573 CY - US PB - Human Factors & Ergonomics Society SN - 0018-7208 SN - 1547-8181 AD - Brungart, Douglas S., AFRL/HECB, 2610 Seventh St., Wpafb, OH, US, 45433-7901 N1 - Accession Number: 2006-05325-009. PMID: 16435697 Partial author list: First Author & Affiliation: Brungart, Douglas S.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Other Publishers: Sage Publications. Release Date: 20060522. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Auditory Stimulation; Cues; Divided Attention; Oral Communication; Visual Stimulation. Minor Descriptor: Monitoring. Classification: Human Experimental Psychology (2300). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: Fal 2005. AB - Although audiovisual (AV) cues are known to improve speech intelligibility in difficult listening environments, little is known about their role in divided attention tasks that require listeners to monitor multiple talkers at the same time. In this experiment, a call-sign-based multitalker listening test was used to evaluate performance in two-talker AV configurations that combined zero, one, or two channels of visual information (neither, one, or both talkers visible) with zero, one, or two channels of audio information (no audio, both talkers played from the same loudspeaker, and both talkers played through different, spatially separated loudspeakers). The results were analyzed to determine the relative performance levels that would occur with each AV configuration with target information that was equally likely to originate from either of the two talkers in the stimulus. The results indicate that spatial separation of the audio signals has the greatest impact on performance in multichannel AV speech displays and that caution should be used when presenting a visual representation of only a single talker unless that talker is known to be the highest priority talker in the combined AV stimulus. Potential applications of this research include the design of improved audiovisual speech displays for multichannel communications systems. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - audiovisual cues KW - divided attention KW - speech KW - performance KW - listening environments KW - speech intelligibility KW - 2005 KW - Auditory Stimulation KW - Cues KW - Divided Attention KW - Oral Communication KW - Visual Stimulation KW - Monitoring KW - 2005 U1 - Sponsor: Air Force Office of Scientific Research. Recipients: No recipient indicated DO - 10.1518/001872005774860023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-05325-009&site=ehost-live&scope=site UR - douglas.brungart@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-05325-016 AN - 2006-05325-016 AU - Arthur, Winfred Jr. AU - Edwards, Bryan D. AU - Bell, Suzanne T. AU - Villado, Anton J. AU - Bennett, Winston Jr. T1 - Team Task Analysis: Identifying Tasks and Jobs That Are Team Based. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2005///Fal 2005 VL - 47 IS - 3 SP - 654 EP - 669 CY - US PB - Human Factors & Ergonomics Society SN - 0018-7208 SN - 1547-8181 AD - Arthur, Winfred Jr., Department of Psychology, Texas A&M University, College Station, TX, US, 77843-4235 N1 - Accession Number: 2006-05325-016. PMID: 16435704 Partial author list: First Author & Affiliation: Arthur, Winfred Jr.; Texas A&M University, College Station, TX, US. Other Publishers: Sage Publications. Release Date: 20060522. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Grant Information: Arthur, Winfred Jr. Major Descriptor: Job Performance; Rating Scales; Task Analysis; Teams. Minor Descriptor: Psychometrics; Test Construction. Classification: Occupational & Employment Testing (2228); Personnel Evaluation & Job Performance (3630). Population: Human (10); Male (30). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Team Task Analysis Scales; Mission Team Task analysis Questionnaire; Feedback and Reaction Questionnaire. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 16. Issue Publication Date: Fal 2005. AB - This paper presents initial information on the development and validation of three team task analysis scales. These scales were designed to quantitatively assess the extent to which a group of tasks or a job is team based. During a 2-week period, 52 male students working in 4-person teams were trained to perform a complex highly interdependent computer-simulated combat mission consisting of both individual- and team-based tasks. Our results indicated that the scales demonstrated high levels of interrater agreement. In addition, the scales differentiated between tasks that were predetermined to be individual versus team based. Finally, the results indicated that job-level ratings of team workflow were more strongly related to team performance than were aggregated task-level ratings of team-relatedness or team workflow. These results suggest that the scales presented here are an effective means of quantifying the extent to which tasks or jobs are team based. A research and practical implication of our findings is that the team task analysis scales could serve as criterion measures in the evaluation of team training interventions or predictors of team performance. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - team task analysis scales KW - test validity KW - test reliability KW - psychometrics KW - jobs KW - team performance KW - test development KW - 2005 KW - Job Performance KW - Rating Scales KW - Task Analysis KW - Teams KW - Psychometrics KW - Test Construction KW - 2005 U1 - Sponsor: US Air Force Research Laboratory, Human Effectiveness Directorate, Warfighter Training Research Division. Grant: F41624-97-C-5000; F41624-97-C-5030. Recipients: Arthur, Winfred Jr. DO - 10.1518/001872005774860087 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-05325-016&site=ehost-live&scope=site UR - wea@psyc.tamu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-10219-005 AN - 2005-10219-005 AU - Parrish, Alan R. AU - Oliver, Sandra AU - Jenkins, Donald AU - Ruscio, Bruce AU - Green, J. Ben AU - Colenda, Christopher T1 - A Short Medical School Course on Responding to Bioterrorism and Other Disasters. JF - Academic Medicine JO - Academic Medicine JA - Acad Med Y1 - 2005/09// VL - 80 IS - 9 SP - 820 EP - 823 CY - US PB - Lippincott Williams & Wilkins SN - 1040-2446 SN - 1938-808X AD - Colenda, Christopher, College of Medicine, Texas A&M University System Health Science Center, College Station, TX, US, 77843-1114 N1 - Accession Number: 2005-10219-005. PMID: 16123460 Other Journal Title: Journal of Medical Education. Partial author list: First Author & Affiliation: Parrish, Alan R.; College of Medicine, Texas A&M University System Health Science Centre, College Station, TX, US. Release Date: 20051205. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Curriculum; Disasters; Emergency Services; Health Care Services; Terrorism. Minor Descriptor: Bioterrorism; Medical Education; Schools. Classification: Professional Education & Training (3410). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 4. Issue Publication Date: Sep, 2005. AB - The events of 9/11 highlighted the limitations of the United States health care system in responding to large-scale public health emergencies. The key for an effective response to any mass casualty event is preparedness; thus, the education of medical students has become a priority. The Association of American Medical Colleges (AAMC) recommended that the nation's medical schools should thoroughly educate students about the public health and emergency services systems to ensure coordinated responses to weapons of mass destruction or other public health threats. In response, The Texas A&M University System Health Science Center College of Medicine, partnering with the Defense Institute for Medical Operations (DIMO), developed a one-week block of required (but not graded) instruction, the 'Leadership Course in Disaster Response,' first given in 2003-04 to 72 second-year students and taught by six military experts from DIMO. The course goal is to (1) educate students on resources available for regional disaster response; (2) define principles of resource management in disaster response; (3) identify specific agents associated with bioterrorism; and (4) understand the psychosocial aspects of disasters. The course was well received, and the 2004-05 session was improved, based on student and faculty feedback. The authors describe the details of the course (specifically, how the course was tailored to fit the AAMC guidelines), changes in students' knowledge and attitudes, and how the course was improved. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - short medical school course KW - bioterrorism responses KW - health care system KW - disasters KW - 2005 KW - Curriculum KW - Disasters KW - Emergency Services KW - Health Care Services KW - Terrorism KW - Bioterrorism KW - Medical Education KW - Schools KW - 2005 DO - 10.1097/00001888-200509000-00007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-10219-005&site=ehost-live&scope=site UR - Colenda@medicine.tamhsc.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Wallace, William H. AU - Bushway, Karen E. AU - Miller, Susan D. AU - Delcomyn, Carrie A. AU - Renard, Jean J. AU - Henley, Michael V. T1 - Use of In Situ-Generated Dimethyldioxirane for Inactivation of Biological Agents. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2005/08/15/ VL - 39 IS - 16 M3 - Article SP - 6288 EP - 6292 SN - 0013936X AB - Dimethyldioxirane (DMDO), generated in situ by adding acetone to an aqueous solution containing potassium peroxymonosulfate (Oxone) at neutral pH, was investigated for inactivation of biological warfare agent simulants. The DMDO solution inactivated bacterial spores, fungal spores, vegetative bacterial cells, viruses, and protein by 7 orders of magnitude in less than 10 mm. The kill rates of DMDO were more pronounced when compared to kill rates of buffered Oxone alone. Conditions for the use of DMDO as a biological decontaminant were optimized by evaluating the effects of age and temperature on open systems. DMDO effectiveness was compared to that of current decontaminant solutions such as DS2 (used by the U.S. military), bleach, and hydrogen peroxide and was shown to be superior in achieving a 7-log kill of Bacillus atrophaeus, a Bacillus anthracis spore simulant. The results demonstrate the potential for DMDO to fill the need for a noncorrosive, nontoxic, and environmentally safe decontaminant. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Biological warfare KW - Acetone KW - Bacterial spores KW - Cells KW - Potassium compounds KW - United States N1 - Accession Number: 18027081; Wallace, William H. 1; Bushway, Karen E. 1; Miller, Susan D. 1; Delcomyn, Carrie A. 1; Renard, Jean J. 1; Henley, Michael V. 2; Email Address: mike.henley@tyndall.af.mil; Affiliations: 1: Applied Research Associates, Inc..; 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, 139 Barnes Drive, Suite 2, Tyndall Air Force Base, Florida 32403.; Issue Info: 8/15/2005, Vol. 39 Issue 16, p6288; Thesaurus Term: Biological warfare; Thesaurus Term: Acetone; Thesaurus Term: Bacterial spores; Subject Term: Cells; Subject Term: Potassium compounds; Subject: United States; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 212391 Potash, Soda, and Borate Mineral Mining; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=18027081&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Altshuler, Edward E. AU - O'Donnell, Terry H. AU - Yaghjian, Arthur D. AU - Best, Steven R. T1 - A Monopole Superdirective Array. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2005/08/15/Aug2005 Part 2 Y1 - 2005/08/15/Aug2005 Part 2 VL - 53 IS - 8 M3 - Article SP - 2653 EP - 2661 SN - 0018926X AB - In principle, the end-fire directivity of a linear periodic array of N isotropic radiators can approach N² as the spacing between elements decreases, provided the magnitude and phase of the in put excitations are properly chosen. Thus, the directivity of a two-element array of isotropic radiators would approach a value of four, that is, 6 dB higher than that of a single isotropic radiator. We have conducted a theoretical, computational, and experimental study for a two-element superdirective array of resonant monopoles. In agreement with the theoretical and computational curves, the measured gain of the monopole array does indeed continually increase with decreasing spacing of the monopoles, provided the relative magnitudes and phases are maintained. However, for very small separation, maximum achievable gain is not reached due to the presence of ohmic loss. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONOPOLE antennas KW - ANTENNAS (Electronics) KW - RADIATORS KW - STEAM heating KW - RADIATION KW - ELECTRONIC apparatus & appliances N1 - Accession Number: 17967697; Source Information: Aug2005 Part 2, Vol. 53 Issue 8, p2653; Subject Term: MONOPOLE antennas; Subject Term: ANTENNAS (Electronics); Subject Term: RADIATORS; Subject Term: STEAM heating; Subject Term: RADIATION; Subject Term: ELECTRONIC apparatus & appliances; Subject Term: ; Number of Pages: 9p; ; Document Type: Article; L3 - 10.1109/TAP.2005.851810 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=17967697&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Cawkwell, Marc J. AU - Nguyen-Manh, Duc AU - Woodward, Christopher AU - Pettifor, David G. AU - Vitek, Vaclav T1 - Origin of Brittle Cleavage in Iridium. JO - Science JF - Science Y1 - 2005/08/12/ VL - 309 IS - 5737 M3 - Article SP - 1059 EP - 1062 SN - 00368075 AB - Iridium is unique among the face-centered cubic metals in that it undergoes brittle cleavage after a period of plastic deformation under tensile stress. Atomistic simulation using a quantum-mechanically derived bond-order potential shows that in iridium, two core structures for the screw dislocation are possible: a glissile planar core and a metastable nonplanar core. Transformation between the two core structures is athermal and leads to exceptionally high rates of cross slip during plastic deformation. Associated with this athermal cross slip is an exponential increase in the dislocation density and strong work hardening from which brittle cleavage is a natural consequence. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Scission (Chemistry) KW - Metallurgy KW - Deformations (Mechanics) KW - Plastics KW - Iridium KW - Quantum theory N1 - Accession Number: 17995367; Cawkwell, Marc J. 1; Email Address: cawkwell@seas.upenn.edu; Nguyen-Manh, Duc 2; Woodward, Christopher 3,4; Pettifor, David G. 5; Vitek, Vaclav 1; Affiliations: 1: Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, PA 19104-6202, USA.; 2: European Atomic Energy Community/UK Atomic Energy Authority (EURATOM/UKAEA) Fusion Association, Culham Science Centre, Abingdon, OX14 3DB, UK.; 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7817, USA.; 4: Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208-3108, USA.; 5: Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK.; Issue Info: 8/12/2005, Vol. 309 Issue 5737, p1059; Thesaurus Term: Scission (Chemistry); Thesaurus Term: Metallurgy; Thesaurus Term: Deformations (Mechanics); Thesaurus Term: Plastics; Subject Term: Iridium; Subject Term: Quantum theory; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 326199 All Other Plastics Product Manufacturing; NAICS/Industry Codes: 424610 Plastics Materials and Basic Forms and Shapes Merchant Wholesalers; NAICS/Industry Codes: 326198 All other plastic product manufacturing; NAICS/Industry Codes: 326121 Unlaminated Plastics Profile Shape Manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 4p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article; Full Text Word Count: 2877 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=17995367&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Fournier, Diane AU - Trott, Sandra AU - Hawari, Jalal AU - Spain, Jim T1 - Metabolism of the Aliphatic Nitramine 4-Nitro-2,4-Diazabutanal by Methylobacterium sp. Strain JS178. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2005/08// VL - 71 IS - 8 M3 - Article SP - 4199 EP - 4202 SN - 00992240 AB - The aliphatic nitramine 4-nitro-2,4-diazabutanal (NDAB; C2H5N3O3) is a ring cleavage metabolite that accumulates during the aerobic degradation of the energetic compound hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) by various Rhodococcus spp. NDAB is also produced during the alkaline hydrolysis of either RDX or octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) and during the photolysis of RDX. Traces of NDAB were observed in a soil sampled from an ammunition-manufacturing facility contaminated with both HMX and RDX, suggesting natural attenuation. In this study, we report the isolation of a soil bacterium that is able to degrade NDAB under aerobic conditions. The isolate is a pink-pigmented facultative methylotroph affiliated with the genus Methylobacterium. The strain, named Methylobacterium sp. strain JS178, degrades NDAB as a sole nitrogen source, with concomitant growth and formation of 1 molar equivalent of nitrous oxide (N2O). Comparison of the growth yield of strain JS178 grown on NDAB, nitrite (NO2-), or ammonium (NH4+) as a nitrogen source revealed that 1 N equivalent is assimilated from each mole of NDAB, which completes the nitrogen mass balance. In radiotracer experiments, strain JS178 mineralized 1 C of the [14C]NDAB produced in situ from [14C]RDX by Rhodococcus sp. strain DN22. Studies on the regulation of NOAB degradation indicated that allantoin, an intermediate in the purine catabolic pathway and a central molecule in the storage and transport of nitrogen in plants, up-regulated the enzyme(s) involved in the degradation of the nitramine. The results reveal the potential for the sequential participation of rhodococci and methylobacteria to effect the complete degradation of RDX. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Hydrolysis KW - Nitrogen oxides KW - Nitroamines KW - Metabolism KW - Methylomonadaceae KW - Methylobacterium N1 - Accession Number: 17968835; Fournier, Diane 1; Trott, Sandra 2,3; Hawari, Jalal 1; Email Address: jalal.hawari@cnrc-nrc.gc.ca; Spain, Jim 4; Affiliations: 1: Biotechnology Research Institute, National Research Council of Canada, Montreal, Quebec H4P 2R2, Canada; 2: U.S. Air Force Research Laboratory, Tyndall Air Force Base, Florida 32403; 3: Center for Cellular Dynamics, Wright State University, Dayton, OH 45435; 4: Department of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0512; Issue Info: Aug2005, Vol. 71 Issue 8, p4199; Thesaurus Term: Hydrolysis; Thesaurus Term: Nitrogen oxides; Subject Term: Nitroamines; Subject Term: Metabolism; Subject Term: Methylomonadaceae; Subject Term: Methylobacterium; Number of Pages: 4p; Document Type: Article L3 - 10.1128/AEM.71.8.4199-4202.2005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=17968835&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Lyons, K.M. AU - Watson, K.A. AU - Carter, C.D. AU - Donbar, J.M. T1 - On flame holes and local extinction in lifted-jet diffusion flames JO - Combustion & Flame JF - Combustion & Flame Y1 - 2005/08// VL - 142 IS - 3 M3 - Article SP - 308 EP - 313 SN - 00102180 N1 - Accession Number: 18152684; Lyons, K.M. 1; Email Address: lyons@eos.ncsu.edu; Watson, K.A. 2; Carter, C.D. 3; Donbar, J.M. 3; Affiliations: 1: Department of Mechanical and Aerospace Engineering, North Carolina State University, Box 7910, Raleigh, NC 27695-7910, USA; 2: Department of Mechanical Engineering, University of the Pacific, Stockton, CA 95211, USA; 3: Air Force Research Laboratory, AFRL/PRA, Wright-Patterson Air Force Base, OH 45433, USA; Issue Info: Aug2005, Vol. 142 Issue 3, p308; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.combustflame.2005.04.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=18152684&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Wilfong, E. R. AU - Jederberg, W. W. AU - Arfsten, D. P. AU - Johnson, E. W. AU - Thitoff, A. R. AU - Brinkley, W. W. AU - Schaeffer, D. J. T1 - Effects of Subchronic Dermal Application of Break-Free CLP® in CD-1 Mice. JO - Cutaneous & Ocular Toxicology JF - Cutaneous & Ocular Toxicology Y1 - 2005/08// VL - 24 IS - 3 M3 - Article SP - 197 EP - 216 PB - Taylor & Francis Ltd SN - 15569527 AB - Break-Free CLP® (Break-Free CLP) is a commercial metal cleaning, lubricating, and preserving compound used by the military, law enforcement agencies, and private citizens primarily for cleaning/maintenance of bore weapons. Break-Free CLP is predominantly polyalphaolefin oil, but it also contains dibasic ester, and isoparaffinic hydrocarbons, all of which have induced dermal irritation in laboratory animals. Studies were conducted to determine the biological effects of subchronic dermal application of Break-Free CLP to the clipped backs of CD-1 mice. Break-Free CLP, 2.5% croton oil (CO; positive control) or acetone (control vehicle) were applied neat, 50 μL/application, three times/week for 90 days. One 50-μL application to a 20 × 3 cm mouse dorsal skin surface area is roughly equivalent to human dermal contact with 260 μL of Break-Free CLP, assuming that contact with the material is primarily with the upper arms, forearms, and hands. Subchronic application of 2.5% CO in acetone (positive control) and Break-Free CLP resulted in gradual accumulation of a dermal irritation response over the 90-day study period. Foci of epithelial ulceration were evident in application site skin cross sections from Break-Free CLP- and CO-treated mice, with more cases of ulceration occurring in animals treated with CO (50 versus 20%). Genes involved in wound healing and skin defense pathways were also significantly affected by subchronic topical exposure to Break-Free CLP. Both alkaline phosphatase (ALKP) activity and the percentage of lymphocytes were significantly decreased for Break-Free CLP- and CO-treated animals, compared with their respective controls, suggesting systemic effects as a result of subchronic dermal application. Analysis of other major organs did not identify histopathology suggestive of toxicity, but dermal treatment with Break-Free CLP was associated with the down-regulation of a number of genes in the liver involved in stress response and metabolism. The results of this study support the manufacturer's recommendations that personal protective equipment (PPE) should be used with this product to prevent the development of chronic irritation as a result of repeat exposure. [ABSTRACT FROM AUTHOR] AB - Copyright of Cutaneous & Ocular Toxicology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Cleaning compounds KW - Hydrocarbons KW - Skin -- Inflammation KW - Polyolefins KW - Esters KW - Mice as laboratory animals KW - ALKP activity KW - Break-Free CLP KW - Dermal irritation KW - Dermal toxicity KW - mRNA expression KW - Polyalphaolefin KW - Subchronic N1 - Accession Number: 18645164; Wilfong, E. R. 1; Jederberg, W. W. 1; Arfsten, D. P. 1; Email Address: darryl.arfsten@wpafb.af.mil; Johnson, E. W. 2; Thitoff, A. R. 2; Brinkley, W. W. 3; Schaeffer, D. J. 4; Affiliations: 1: Naval Health Research Center Detachment, Environmental Health Effects Laboratory, Wright-Patterson AFB, Ohio, USA; 2: GeoCenters, Inc., Wright-Patterson AFB, Ohio, USA; 3: Operational Toxicology, Air Force Research Laboratory, Wright-Patterson AFB, Ohio, USA; 4: Department of Veterinary Biosciences, University of Illinois at Urbana Champaign, Urbana, Illinois, USA; Issue Info: 2005, Vol. 24 Issue 3, p197; Thesaurus Term: Cleaning compounds; Thesaurus Term: Hydrocarbons; Subject Term: Skin -- Inflammation; Subject Term: Polyolefins; Subject Term: Esters; Subject Term: Mice as laboratory animals; Author-Supplied Keyword: ALKP activity; Author-Supplied Keyword: Break-Free CLP; Author-Supplied Keyword: Dermal irritation; Author-Supplied Keyword: Dermal toxicity; Author-Supplied Keyword: mRNA expression; Author-Supplied Keyword: Polyalphaolefin; Author-Supplied Keyword: Subchronic; NAICS/Industry Codes: 812320 Drycleaning and Laundry Services (except Coin-Operated); NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325612 Polish and Other Sanitation Good Manufacturing; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 20p; Document Type: Article L3 - 10.1081/CUS-200068635 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=18645164&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Steyskal, Hans AU - Ramprecht, Jorgen AU - Holter, Henrik T1 - Spiral Elements for Broad-Band Phased Arrays. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2005/08//Aug2005 Part 1 Y1 - 2005/08//Aug2005 Part 1 VL - 53 IS - 8 M3 - Article SP - 2558 EP - 2562 SN - 0018926X AB - In this paper, we present a numerical analysis of an infinite periodic array of planar spiral elements with octave bandwidth. For off-broadside scan the array is found to exhibit very narrow resonances, which are independent of scan angle. They occur when the spiral arms are multiples of half a wavelength, in which case the current forms a high amplitude standing wave along the spiral arms. The resonances are conveniently suppressed by making the arms unequally long. We also discuss the equivalent 3-port for this nonsymmetrical array element and evaluate the element polarization performance. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNA arrays KW - ANTENNAS (Electronics) KW - NUMERICAL analysis KW - DATA transmission systems KW - DIGITAL communications KW - BROADBAND communication systems N1 - Accession Number: 17980795; Source Information: Aug2005 Part 1, Vol. 53 Issue 8, p2558; Subject Term: ANTENNA arrays; Subject Term: ANTENNAS (Electronics); Subject Term: NUMERICAL analysis; Subject Term: DATA transmission systems; Subject Term: DIGITAL communications; Subject Term: BROADBAND communication systems; Subject Term: ; Number of Pages: 5p; ; Document Type: Article; L3 - 10.1109/TAP.2005.852309 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=17980795&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR T1 - Drop Jumps. AU - Blackwood, Buck AU - Graham, John F. JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) Y1 - 2005/08// VL - 27 IS - 4 SP - 57 EP - 59 SN - 15241602 N1 - Accession Number: 17875369; Author: Blackwood, Buck: 1 Author: Graham, John F. email: jgstrength@aol.com. ; Author Affiliation: 1 United States Air Force Academy, Colorado Springs, Colorado; No. of Pages: 3; Language: English; Publication Type: Article; Update Code: 20050811 N2 - Drop jumps are a commonly misunderstood exercise that can yield incredible power--If prescribed correctly. ABSTRACT FROM AUTHOR KW - *JUMPING KW - *PHYSICAL fitness KW - *PHYSICAL education KW - *ATHLETICS KW - *MUSCLE strength UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=17875369&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 106518702 T1 - Exercise technique. Drop jumps. AU - Blackwood B A2 - Graham JF Y1 - 2005/08// N1 - Accession Number: 106518702. Language: English. Entry Date: 20050930. Revision Date: 20150818. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Jumping KW - Muscle Strengthening -- Methods KW - Exercise Physiology KW - Athletic Training -- Methods KW - Exercise Intensity KW - Periodicity SP - 57 EP - 59 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 27 IS - 4 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. AB - Drop jumps are a commonly misunderstood exercise that can yield incredible power -- if prescribed SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106518702&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 106518705 T1 - College coaches corner. Learning from each other: in-season training. AU - Hedrick A Y1 - 2005/08// N1 - Accession Number: 106518705. Language: English. Entry Date: 20050930. Revision Date: 20150711. Publication Type: Journal Article; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Muscle Strengthening KW - Athletic Training Programs KW - Athletes, College KW - Plyometrics KW - Travel KW - Recovery, Exercise KW - Football SP - 75 EP - 78 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 27 IS - 4 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. AB - Strength and conditioning coaches put a lot of time and effort into designing effective off-season strength and conditioning programs. Certainly, this is the time where the majority of increases in size, strength, power, and speed are going to occur. However, to maintain those adaptations that occur during the off-season phase throughout the duration of the in-season phase requires effective program design. The purpose of this column is to learn from our panel of coaches how they design effective in-season training programs. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106518705&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Learning From Each Other: In-Season Training. AU - Hedrick, Allen JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) Y1 - 2005/08// VL - 27 IS - 4 SP - 75 EP - 78 SN - 15241602 N1 - Accession Number: 17875391; Author: Hedrick, Allen: 1 email: ARHedrick@Adelphia.net. ; Author Affiliation: 1 United States Air Force Academy, Colorado Springs, Colorado; No. of Pages: 4; Language: English; Publication Type: Article; Update Code: 20050811 N2 - Strength and conditioning coaches put a lot of time and effort into designing effective off-season strength and conditioning programs. Certainly, this is the time where the majority of increases in size, strength, power, and speed are going to occur. However, to maintain those adaptations that occur during the off-season phase throughout the duration of the in-season phase requires effective program design. The purpose of this column is to learn from our panel of coaches how they design effective in-season training programs. ABSTRACT FROM AUTHOR KW - *PHYSICAL education KW - *COACHES (Athletics) KW - *ATHLETICS KW - *PHYSICAL fitness KW - *MUSCLE strength KW - *ATHLETES -- Training of UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=17875391&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Hart, Kenneth A. AU - Steenburgh, W. James AU - Onton, Daryl J. T1 - Model Forecast Improvements with Decreased Horizontal Grid Spacing over Finescale Intermountain Orography during the 2002 Olympic Winter Games. JO - Weather & Forecasting JF - Weather & Forecasting Y1 - 2005/08// VL - 20 IS - 4 M3 - Article SP - 558 EP - 576 PB - American Meteorological Society SN - 08828156 AB - Forecasts produced for the 2002 Olympic and Paralympic Winter Games (23 January–25 March 2002) by a multiply nested version of the fifth-generation Pennsylvania State University–National Center for Atmospheric Research (PSU–NCAR) Mesoscale Model (MM5) are examined to determine if decreasing horizontal grid spacing to 4 km improves forecast accuracy over the finescale topography of the Intermountain West. The verification is based on high-density observations collected by the MesoWest cooperative networks, including approximately 200 wind and temperature sites and 100 precipitation sites across northern Utah. Wind and precipitation forecasts produced by the 4-km MM5 domain were more accurate (based on traditional measures) than those of its parent 12-km domain. The most significant improvements in wind speed forecasts occurred at night in valleys and lowland locations where the topography of the 4-km domain produced more accurate nocturnal flows. Wind direction forecast improvements were most substantial at mountain sites where the better topographic resolution of the 4-km domain more accurately reflected the exposure of these locations to the free atmosphere. The 4-km domain also produced quantitative precipitation forecasts that were either equally (small events) or more (large events) accurate than the 12-km domain. Precipitation bias errors varied substantially between the two domains since the representation of the region’s narrow, steeply sloped, basin-and-range topography improved dramatically at 4-km grid spacing. Curiously, the overall accuracy of temperature forecasts by the 4-km domain was not significantly better than that of the 12-km domain. This was due to an inability of the MM5 to properly simulate nocturnal and persistent cold pools within mountain valleys and the lowlands upstream of the Wasatch Mountains. Paradoxically, the added resolution of the 4-km domain, coupled with the failure of this version of the MM5 to fully capture the nocturnal and persistent cold pools, resulted in poorer skill scores. At upper elevations, which are typically above the cold pools, the 4-km domain was substantially more accurate. These results illustrate that decreasing horizontal grid spacing to less than 10 km does improve wind and precipitation forecasts over finescale Intermountain West topography. It is hypothesized that model improvements will ultimately enable the advantages of added model resolution to be fully realized for temperature forecasts over the Intermountain West. [ABSTRACT FROM AUTHOR] AB - Copyright of Weather & Forecasting is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Weather forecasting KW - Geophysical prediction KW - Atmosphere -- Research KW - Wind speed KW - Landforms KW - Pennsylvania N1 - Accession Number: 18317054; Hart, Kenneth A. 1,2,3; Email Address: kenneth.hart@usafa.af.mil; Steenburgh, W. James 1; Onton, Daryl J. 1; Affiliations: 1: NOAA Cooperative Institute for Regional Prediction, and Department of Meteorology, University of Utah, Salt Lake City, Utah; 2: Department of Economics and Geography, United States Air Force Academy, USAF Academy, Colorado; 3: Dept. of Economics and Geography, United States Air Force Academy, Suite 6K110, 2354 Fairchild Dr., USAF Academy, CO 80840; Issue Info: Aug2005, Vol. 20 Issue 4, p558; Thesaurus Term: Weather forecasting; Thesaurus Term: Geophysical prediction; Thesaurus Term: Atmosphere -- Research; Subject Term: Wind speed; Subject Term: Landforms; Subject: Pennsylvania; NAICS/Industry Codes: 541990 All Other Professional, Scientific, and Technical Services; Number of Pages: 19p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=18317054&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2005-10732-005 AN - 2005-10732-005 AU - Parco, James E. AU - Rapoport, Amnon AU - Amaldoss, Wilfred T1 - Two-stage contests with budget constraints: An experimental study. JF - Journal of Mathematical Psychology JO - Journal of Mathematical Psychology JA - J Math Psychol Y1 - 2005/08// VL - 49 IS - 4 SP - 320 EP - 338 CY - Netherlands PB - Elsevier Science SN - 0022-2496 SN - 1096-0880 AD - Parco, James E., United States Air Force Academy, Department of Management, 2354 Fairchild Dr., Ste 6H-126, Colorado Springs, CO, US, 80840 N1 - Accession Number: 2005-10732-005. Partial author list: First Author & Affiliation: Parco, James E.; United States Air Force Academy, Department of Management, Colorado Springs, CO, US. Release Date: 20051011. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Budgets; Competition; Experimental Design; Game Theory; Group Dynamics. Classification: Statistics & Mathematics (2240). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 19. Issue Publication Date: Aug, 2005. AB - We report the results of an experiment on two-stage contests with budget-constrained agents competing to win an exogenously determined prize. In stage 1, agents first compete within their own groups by expending resources, and then in stage 2 the winners of each group compete with one another to win the prize by expending additional resources subject to the budget constraint. Winners in each stage are determined by Tullock's proportional contest success function. We present the subgame perfect equilibrium solution for this model, derive predictions for our experiment, and then test them experimentally. In agreement with previous experimental research on single-stage contests, the equilibrium model is flatly rejected due to over-expenditure in stage 1. A descriptive model that extends the equilibrium solution by allowing for (1) non-pecuniary utility of winning and (2) misperception of the probability of winning better accounts for some, but not all, of the behavioral regularities. Taking an alternative approach, we then turn to an adaptive learning model that accounts for several features of the dynamics of play but still significantly underpredicts the stage 1 expenditures. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - budget constraints KW - experimental research KW - group competition KW - individual competition KW - 2005 KW - Budgets KW - Competition KW - Experimental Design KW - Game Theory KW - Group Dynamics KW - 2005 DO - 10.1016/j.jmp.2005.03.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-10732-005&site=ehost-live&scope=site UR - wilfred.amaldoss@mail.duke.edu UR - amnon@u.arizona.edu UR - james.parco@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Hagstod, David T1 - Shipping Out to the War Zone. JO - American Journal of Nursing JF - American Journal of Nursing Y1 - 2005/07// VL - 105 IS - 7 M3 - Article SP - 38 EP - 38 SN - 0002936X AB - This article reports that from September 1990 to May 1991, the author was a combat medical specialist with the U.S. Army in operations Desert Shield and Desert Storm. The author is now creating a will and assigning power of attorney before he leaves for his first tour of duty in Iraq. The author has been working as a travel nurse in Rochester, New Hampshire. The author decide to visit Iraq when he heard that there's a shortage of medical personnel at Iraq. The author expects to leave for Balad, Iraq, this summer, for a tour of 60 days. KW - MEDICAL personnel KW - UNITED States -- Armed Forces KW - SPECIAL operations (Military science) KW - OPERATION Desert Shield, 1990-1991 KW - PERSIAN Gulf War, 1991 KW - IRAQ KW - UNITED States N1 - Accession Number: 17556940; Hagstod, David 1; Email Address: Balad@yahoo.com; Source Information: Jul2005, Vol. 105 Issue 7, p38; Subject: MEDICAL personnel; Subject: UNITED States -- Armed Forces; Subject: SPECIAL operations (Military science); Subject: OPERATION Desert Shield, 1990-1991; Subject: PERSIAN Gulf War, 1991; Geographic Terms: IRAQ; UNITED States; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=17556940&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Katta, Viswanath R. AU - Blevins, Linda G. AU - Roquemore, William M. T1 - Dynamics of an inverse diffusion flame and its role in polycyclic-aromatic-hydrocarbon and soot formation JO - Combustion & Flame JF - Combustion & Flame Y1 - 2005/07// VL - 142 IS - 1/2 M3 - Article SP - 33 EP - 51 SN - 00102180 AB - Abstract: Residence time and thermo-chemical environment are important factors in the soot-formation process in flames. Recent studies have revealed that the soot generated in an inverse diffusion flame (IDF) is not fully carbonized as it is in a normal diffusion flame. For understanding the chemical and physical structure of the partially carbonized soot formed in inverse diffusion flames, knowledge of the flow dynamics of these flames is required. A time-dependent, detailed-chemistry computational-fluid-dynamics (CFD) model is developed for simulation of an ethylene–air inverse jet-diffusion flame that has been studied experimentally. Steady-state simulations show that all of the polycyclic-aromatic-hydrocarbon (PAH) species are produced outside the flame surface on the fuel side. Unsteady simulations reveal that buoyancy-induced vortices establish outside the flame because of the low fuel jet velocity (∼40 cm/s) employed. These vortices in inverse diffusion flames, as opposed to those in normal diffusion flames, appear primarily in the exhaust jet. The advection of these vortices at 17.2 Hz increases mixing and causes PAH species to be more uniformly distributed in downstream locations. While the concentrations of rapidly formed radical and product species are not altered appreciably by the flame oscillation, concentrations of certain slowly formed PAH species are significantly changed. The dynamics of 20-nm tracer particles injected from the 1200 K fuel-side contour line suggest that soot particles are reheated and cooled alternately while being entrained into and advected by the buoyancy-induced vortices. This flow pattern could explain the experimentally observed large size and slight carbonization of IDF soot particles. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Soot KW - Benzene KW - Flame KW - Fluid dynamics KW - Flicker KW - Inverse diffusion flame KW - PAH KW - Soot inception N1 - Accession Number: 17953213; Katta, Viswanath R. 1; Email Address: vrkatta@erinet.com; Blevins, Linda G. 2; Roquemore, William M. 3; Affiliations: 1: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, OH 45440, USA; 2: Combustion Research Facility, Sandia National Laboratories, Livermore, CA 94550-0969, USA; 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Issue Info: Jul2005, Vol. 142 Issue 1/2, p33; Thesaurus Term: Soot; Thesaurus Term: Benzene; Subject Term: Flame; Subject Term: Fluid dynamics; Author-Supplied Keyword: Flicker; Author-Supplied Keyword: Inverse diffusion flame; Author-Supplied Keyword: PAH; Author-Supplied Keyword: Soot inception; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.combustflame.2005.02.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=17953213&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Meyer, T.R. AU - Roy, S. AU - Lucht, R.P. AU - Gord, J.R. T1 - Dual-pump dual-broadband CARS for exhaust-gas temperature and CO2–O2–N2 mole-fraction measurements in model gas-turbine combustors JO - Combustion & Flame JF - Combustion & Flame Y1 - 2005/07// VL - 142 IS - 1/2 M3 - Article SP - 52 EP - 61 SN - 00102180 AB - Abstract: Application of dual-pump, dual-broadband (DPDB) coherent anti-Stokes Raman scattering (CARS) for the measurement of temperature and multiple-species mole fractions is presented for the first time in a liquid-fueled combustor of practical interest. In this system pure rotational transitions of O2–N2 and the ro-vibrational transitions of CO2–N2 are probed using two narrowband pump beams, a broadband pump beam, and a broadband Stokes beam. This technique permits highly accurate temperature measurements at both low and high temperatures as well as mole-fraction measurements of two molecules with respect to N2 from each laser shot. Single-shot measurements of temperature and mole-fraction ratios of CO2/N2 and O2/N2 in the exhaust stream of a swirl-stabilized, JP-8-fueled, model gas-turbine combustor are presented for equivalence ratios ranging from 0.45 to 1.0. Agreement between mean rotational and ro-vibrational temperatures is within ∼3%, and mean measurements of CO2/N2 and O2/N2 mole-fraction ratios are within ∼15% of equilibrium theory. To illustrate the ability of the current measurement system to track multiple scalar statistics in turbulent reacting flows, histograms and scatter plots of temperature and species mole fractions are presented within the potential-core and turbulent-shear-layer regions of the exhaust stream. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Temperature KW - Carbon dioxide KW - Oxygen KW - Nitrogen KW - COMBUSTION chambers KW - Gas turbines KW - CARS KW - Gas-turbine combustor N1 - Accession Number: 17953214; Meyer, T.R. 1; Email Address: trmeyer@innssi.com; Roy, S. 1; Lucht, R.P. 2; Gord, J.R. 3; Affiliations: 1: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, OH 45440, USA; 2: Department of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA; 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Issue Info: Jul2005, Vol. 142 Issue 1/2, p52; Thesaurus Term: Temperature; Thesaurus Term: Carbon dioxide; Thesaurus Term: Oxygen; Thesaurus Term: Nitrogen; Thesaurus Term: COMBUSTION chambers; Subject Term: Gas turbines; Author-Supplied Keyword: CARS; Author-Supplied Keyword: Gas-turbine combustor; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.combustflame.2005.02.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=17953214&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Repperger, Daniel W. AU - Phillips, Chandler A. AU - Berlin, James E. AU - Neidhard-Doll, Amy T. AU - Haas, Michael W. T1 - Human-Machine Haptic Interface Design Using Stochastic Resonance Methods. JO - IEEE Transactions on Systems, Man & Cybernetics: Part A JF - IEEE Transactions on Systems, Man & Cybernetics: Part A Y1 - 2005/07// VL - 35 IS - 4 M3 - Article SP - 574 EP - 582 SN - 10834427 AB - A study was conducted with haptic (forces produced on a human via mechanical systems) interfaces and how they may interact with an operator to improve tracking performance. What differs from traditional approaches is that a certain amount of random noise (in a haptic sense) was inserted into the human-machine loop. It was observed that the tracking performance of the operator benefitted from this interaction. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Systems, Man & Cybernetics: Part A is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HUMAN-machine systems KW - ROBOTICS KW - AUTOMATION KW - COMPUTER interfaces KW - NONLINEAR systems KW - SIGNAL-to-noise ratio KW - Haptics KW - human-machine interfaces KW - stochastic resonance N1 - Accession Number: 17532985; Repperger, Daniel W. 1; Phillips, Chandler A. 2; Berlin, James E. 3; Neidhard-Doll, Amy T. 2; Haas, Michael W. 1; Affiliations: 1: Air Force Research Laboratory, AFRL/HECP, Wright-Patterson AFB, OH 45433 USA.; 2: School of Biomedical, Human Factors and Industrial Engineering, Wright State University, Dayton. OH 45435 USA.; 3: General Dynamics, Inc., Dayton, OH 45432 USA.; Issue Info: Jul2005, Vol. 35 Issue 4, p574; Thesaurus Term: HUMAN-machine systems; Thesaurus Term: ROBOTICS; Thesaurus Term: AUTOMATION; Subject Term: COMPUTER interfaces; Subject Term: NONLINEAR systems; Subject Term: SIGNAL-to-noise ratio; Author-Supplied Keyword: Haptics; Author-Supplied Keyword: human-machine interfaces; Author-Supplied Keyword: stochastic resonance; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TSMCA.2005.850608 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=17532985&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Blair, Maxwell AU - Canfield, Robert A. AU - Roberts Jr., Ronald W. T1 - Joined-Wing Aeroelastic Design with Geometric Nonlinearity. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2005/07//Jul/Aug2005 Y1 - 2005/07//Jul/Aug2005 VL - 42 IS - 4 M3 - Article SP - 832 EP - 848 SN - 00218669 AB - An integrated process is presented that advances the design of an aeroelastic joined-wing concept by incorporating physics-based results at the system level. For instance, this process replaces empirical mass estimation with high-fidelity analytical mass estimations. Elements of nonlinear structures, aerodynamics, and aeroelastic analyses were incorporated with vehicle configuration design. This process represents a significantly complex application of aeroelastic structural optimization. Specific fuel consumption for a fixed lift-to-drag ratio was considered in the process for estimating fuel to size the structure to meet range and loiter requirements. This design process was implemented on a single configuration for which two crucial nonlinear phenomena contribute to structural failure: large deformation aerodynamics and geometrically nonlinear structures. A correct model of the nonlinear aeroelastic physics offers the possibility of a successful design. Unconventional features of a joined-wing concept are presented with the aid of this unique design model. Hopefully, insight derived from the nonlinear aeroelastic design might be leveraged to the benefit of future joined-wing designs. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - AIRPLANE wings KW - NONLINEAR theories KW - AERODYNAMICS KW - GEOMETRY KW - STRUCTURAL design N1 - Accession Number: 19570879; Source Information: Jul/Aug2005, Vol. 42 Issue 4, p832; Subject Term: AEROELASTICITY; Subject Term: AIRPLANE wings; Subject Term: NONLINEAR theories; Subject Term: AERODYNAMICS; Subject Term: GEOMETRY; Subject Term: STRUCTURAL design; Subject Term: ; Number of Pages: 17p; ; Illustrations: 14 Diagrams, 10 Charts, 3 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19570879&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Dogan, Atilla AU - Venkataramanan, Sriram AU - Blake, William T1 - Modeling of Aerodynamic Coupling Between Aircraft in Close Proximity. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2005/07//Jul/Aug2005 Y1 - 2005/07//Jul/Aug2005 VL - 42 IS - 4 M3 - Article SP - 941 EP - 955 SN - 00218669 AB - A method is developed for modeling the aerodynamic coupling between aircraft flying in close proximity. Velocities induced on a trailing aircraft by vortices from an aircraft upstream are written as a function of the relative separation and relative orientation between the two aircraft. The nonuniform vortex-induced wind and wind gradients acting on the trail aircraft are approximated as effective uniform wind and wind gradients. In a dynamic simulation, the effective wind can be used directly in the equations of motion, whereas the wind gradient can be used in the standard buildup equations for the aerodynamic moments. This removes necessity to explicitly compute the induced forces and moments. Various vortex models for estimating induced velocities and averaging schemes for computing effective wind components and gradients are assessed. Results from the method are compared to wind-tunnel data for a formation of two similar aircraft. A good match is obtained between experimental data and the predicted incremental force and moment coefficients induced on the trail aircraft. It is briefly discussed how the effective wind components and gradients can be incorporated into equations of motion of aircraft flying in a vortex field. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - AIR speed KW - VORTEX motion KW - WINDS KW - AIRPLANES N1 - Accession Number: 19570891; Source Information: Jul/Aug2005, Vol. 42 Issue 4, p941; Subject Term: AERODYNAMICS; Subject Term: AIR speed; Subject Term: VORTEX motion; Subject Term: WINDS; Subject Term: AIRPLANES; Subject Term: ; Number of Pages: 15p; ; Illustrations: 8 Diagrams, 1 Chart, 9 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=19570891&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - D. P. Arfsten AU - E. W. Johnson AU - A. R. Thitoff AU - A. E. Jung AU - K. R. Still AU - W. W. Brinkley AU - D. J. Schaeffer AU - W. W. Jederberg AU - A. J. Bobb T1 - Acute and subacute dermal toxicity of Break-Free CLP: a weapons cleaning and maintenance compound. JO - Journal of Applied Toxicology JF - Journal of Applied Toxicology Y1 - 2005/07// VL - 25 IS - 4 M3 - Article SP - 318 EP - 327 SN - 0260437X AB - Break-Free CLP is a commercial cleaning, lubricating and preserving compound used in both the military and civilian sectors for maintenance of small- and large-caliber weapons. Like many commercial mixtures, there is very little information available on the toxicity of Break-Free CLP. Studies were conducted to characterize the biological effects of single or repeat dermal application of Break-Free CLP to the clipped backs of CD-1 mice. Break-Free CLP was applied neat, 50 l three times of week for up to 2 weeks. Foci of epithelial ulceration were observed in skin sections from 22% of Break-Free CLP-treated animals in conjunction with markedly thickened epithelium suggesting that robust epithelial regeneration was occurring in these animals. Skin histopathology of Break-Free CLP-treated animals closely matched the histopathology from mice treated repeatedly with 2% croton oil in acetone (dermal irritation positive control). Serum alkaline phosphatase activity was significantly (P < 0.05) lower for mice treated with Break-Free CLP, 2% croton oil or 7,12-dimethylbenz[a]anthracene (DMBA) compared with negative and vehicle control mice. Skin nitric oxide (NO) levels were not significantly elevated for mice treated with Break-Free CLP but were significantly elevated for mice treated with dermal irritation positive control compound DMBA. The cumulative skin changes in Break-Free CLP-treated animals support conducting a subchronic dermal application study. The observed decreases in serum alkaline phosphatase activity suggest that future studies should include the liver and bone as possible target organs. Additionally, dermal penetration studies could provide key health risk assessment information for characterizing the potential health risks associated with chronic dermal exposure to Break-Free CLP. Published in 2005 by John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Toxicology is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Phosphatases KW - Croton oil KW - Vegetable oils KW - Zinc enzymes N1 - Accession Number: 18468163; D. P. Arfsten 1; E. W. Johnson 1; A. R. Thitoff 1; A. E. Jung 1; K. R. Still 1; W. W. Brinkley 2; D. J. Schaeffer 3; W. W. Jederberg 1; A. J. Bobb 1; Affiliations: 1: Naval Health Research Center Detachment, Environmental Health Effects Laboratory, Wright-Patterson AFB, OH 45433, USA; 2: Health Research Center Detachment, Environmental Health Effects Laboratory, Wright-Patterson AFB, OH 45433, USA, 1, Operational Toxicology, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; 3: Health Research Center Detachment, Environmental Health Effects Laboratory, Wright-Patterson AFB, OH 45433, USA, 1, Operational Toxicology, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA, 2, Department of Veterinary Biosciences, University of Illinois at Urbana Champaign, Urbana IL 61802, USA; Issue Info: Jul2005, Vol. 25 Issue 4, p318; Thesaurus Term: Phosphatases; Subject Term: Croton oil; Subject Term: Vegetable oils; Subject Term: Zinc enzymes; NAICS/Industry Codes: 311224 Soybean and Other Oilseed Processing; NAICS/Industry Codes: 311225 Fats and Oils Refining and Blending; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=18468163&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Corporan, Edwin AU - Reich, Richard AU - Monroig, Orvin AU - DeWitt, Matthew J. AU - Larson, Venus AU - Aulich, Ted AU - Mann, Michael AU - Seames, Wayne T1 - Impacts of Biodiesel on Pollutant Emissions of a JP-8--Fueled Turbine Engine. JO - Journal of the Air & Waste Management Association (Air & Waste Management Association) JF - Journal of the Air & Waste Management Association (Air & Waste Management Association) Y1 - 2005/07// VL - 55 IS - 7 M3 - Article SP - 940 EP - 949 PB - Air & Waste Management Association SN - 10962247 AB - The impacts of biodiesel on gaseous and particulate matter (PM) emissions of a JP-8-fueled T63 engine were investigated. Jet fuel was blended with the soybean oil-derived methyl ester biofuel at various concentrations and combusted in the turbine engine. The engine was operated at three power settings, namely ground idle, cruise, and takeoff power, to study the impact of the biodiesel at significantly different pressure and temperature conditions. Particulate emissions were characterized by measuring the particle number density (PND; particulate concentration), the particle size distribution, and the total particulate mass. PM samples were collected for off-line analysis to obtain information about the effect of the biodiesel on the polycyclic aromatic hydrocarbon (PAH) content. In addition, temperature-programmed oxidation was performed on the collected soot samples to obtain information about the carbonaceous content (elemental or organic). Major and minor gaseous emissions were quantified using a total hydrocarbon analyzer, an oxygen analyzer, and a Fourier Transform IR analyzer. Test results showed the potential of biodiesel to reduce soot emissions in the jet-fueled turbine engine without negatively impacting the engine performance. These reductions, however, were observed only at the higher power settings with relatively high concentrations of biodiesel. Specifically, reductions of ∼15% in the PND were observed at cruise and takeoff conditions with 20% biodiesel in the jet fuel. At the idle condition, slight increases in PND were observed; however, evidence shows this increase to be the result of condensed uncombusted biodiesel. Most of the gaseous emissions were unaffected under all of the conditions. The biodiesel was observed to have minimal effect on the formation of polycyclic aromatic hydrocarbons during this study. In addition to the combustion results, discussion of the physical and chemical characteristics of the blended fuels obtained using standard American Society for Testing and Materials (ASTM) fuel specifications methods are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Air & Waste Management Association (Air & Waste Management Association) is the property of Air & Waste Management Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Biodiesel fuels KW - FUEL KW - Biomass energy KW - Polycyclic aromatic hydrocarbons KW - Soot KW - Jet planes N1 - Accession Number: 17534391; Corporan, Edwin 1; Email Address: edwin.corporan@wpafb.af.mil; Reich, Richard 1; Monroig, Orvin 1; DeWitt, Matthew J. 2; Larson, Venus 3; Aulich, Ted 3; Mann, Michael 3; Seames, Wayne 3; Affiliations: 1: Air Force Research Laboratory-Fuels Branch, Wright-Patterson Air Force Base, OH; 2: University of Dayton Research Institute, Dayton, OH; 3: Chemical Engineering Department, University of North Dakota, Grand Forks, ND; Issue Info: Jul2005, Vol. 55 Issue 7, p940; Thesaurus Term: Biodiesel fuels; Thesaurus Term: FUEL; Thesaurus Term: Biomass energy; Thesaurus Term: Polycyclic aromatic hydrocarbons; Thesaurus Term: Soot; Subject Term: Jet planes; NAICS/Industry Codes: 221117 Biomass Electric Power Generation; NAICS/Industry Codes: 221119 Other electric power generation; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 10p; Illustrations: 4 Charts, 7 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=17534391&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2005-07491-006 AN - 2005-07491-006 AU - Whitmore, Jeffrey N. T1 - Assessing Performance in Complex Team Environments. T3 - Cognitive performance in operational environments JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2005/07// VL - 76 IS - 7,Sect2,Suppl SP - C31 EP - C33 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Whitmore, Jeffrey N., Air Force Research Laboratory, Human Effectiveness Directorate, Biosciences and Protection Division, Fatigue Countermeasures Branch, 2504 Gillingham Drive, Brooks City-Base, TX, US, 78235 N1 - Accession Number: 2005-07491-006. Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Whitmore, Jeffrey N.; Fatigue Countermeasures Branch, Biosciences and Protection Division, Human Effectiveness Directorate, Air Force Research Laboratory, Brooks City-Base, TX, US. Release Date: 20051017. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Group Performance; Interpersonal Compatibility. Minor Descriptor: Teams. Classification: Group & Interpersonal Processes (3020). Population: Human (10). References Available: Y. Page Count: 3. Issue Publication Date: Jul, 2005. AB - This paper provides a brief introduction to team performance assessment. It highlights some critical aspects leading to the successful measurement of team performance in realistic console operations; discusses the idea of process and outcome measures; presents two types of team data collection systems; and provides an example of team performance assessment. Team performance assessment is a complicated endeavor relative to assessing individual performance. Assessing team performance necessitates a clear understanding of each operator's task, both at the individual and team level, and requires planning for efficient data capture and analysis. Though team performance assessment requires considerable effort, the results can be very worthwhile. Most tasks performed in Command and Control environments are team tasks, and understanding this type of performance is becoming increasingly important to the evaluation of mission success and for overall system optimization (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - team performance assessment KW - team environments KW - individual performance KW - 2005 KW - Group Performance KW - Interpersonal Compatibility KW - Teams KW - 2005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-07491-006&site=ehost-live&scope=site UR - Jeff.Whitmore@brooks.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-07491-007 AN - 2005-07491-007 AU - Doan, Brandon K. AU - Caldwell, John J. A. AU - Hursh, Steve R. AU - Whitmore, Jeff N. AU - O'Donnell, Robert D. AU - Russo, Michael B. T1 - Assessing Psychoactive Pharmaceuticals and Transitioning Pharmacological Fatigue Countermeasures into Operational Environments. T3 - Cognitive performance in operational environments JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2005/07// VL - 76 IS - 7,Sect2,Suppl SP - C34 EP - C38 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Doan, Brandon K., Fatigue Countermeasures Branch, Human Effectiveness Directorate, Biosciences and Protection Division, Air Force Research Laboratory, Brooks City-Base, TX, US, 78235 N1 - Accession Number: 2005-07491-007. Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Doan, Brandon K.; U.S. Air Force Research Laboratory, Brooks City-Base, TX, US. Release Date: 20051017. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Fatigue; Military Personnel; Military Psychology; Performance; Pharmacology. Minor Descriptor: Ketamine; Safety. Classification: Military Psychology (3800); Psychopharmacology (2580). Population: Human (10). Location: US. References Available: Y. Page Count: 5. Issue Publication Date: Jul, 2005. AB - Herein we summarize a discussion on the topic of how psychopharmaceuticals for potential military operational use may be evaluated based on their effects on performance and safety, and introduce two manuscripts: the first (Caldwell and Caldwell; 1) addressing the operational use of fatigue countermeasures; and the second (Rowland; 3) discussing the potential operational use and limitations of ketamine as a field analgesic. Fatigue countermeasures are usually employed by a relatively small number of military members engaged in sustained or continuous operations when sleep is not an option. Clinical treatments are available at any time as required to treat medical conditions. The issue of importance for the operational community, with regard to both clinical use of psychopharmaceuticals and performance maintenance through fatigue countermeasures, should be whether the medication impairs operationally relevant performance, assuming the disorder for which the medication is prescribed does not in itself prohibit operational duties. Applied research paradigms are generally discussed for assessing and transitioning pharmaceutical compounds from the laboratory to the operational environment. Tier 1 focuses on quantifying the impact of stressors and interventions in healthy members of the general population, while Tier 2 testing would use military or operationally matched volunteers in simulated or actual field environments. The section papers address two areas of operational relevance--the Caldwell and Caldwell paper presents guidelines for the use of fatigue countermeasures, and the Rowland paper discusses the potential effects of ketamine, an agent intended to replace morphine as a battlefield analgesic, on cognition. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - operational environments KW - fatigue KW - pharmacology KW - military psychology KW - performance KW - safety KW - ketamine KW - psychopharmaceuticals KW - 2005 KW - Fatigue KW - Military Personnel KW - Military Psychology KW - Performance KW - Pharmacology KW - Ketamine KW - Safety KW - 2005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-07491-007&site=ehost-live&scope=site UR - Brandon.Doan@brooks.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-07491-008 AN - 2005-07491-008 AU - Caldwell, John A. AU - Caldwell, J. Lynn T1 - Fatigue in Military Aviation: An Overview of U.S, Military-Approved Pharmacological Countermeasures. T3 - Cognitive performance in operational environments JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2005/07// VL - 76 IS - 7,Sect2,Suppl SP - C39 EP - C51 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Caldwell, J. Lynn, Warfighter Fatigue Countermeasures S&T, Biosciences and Protection Division, Human Effectiveness Directorate, Air Force Research Laboratory, Brooks City-Base, TX, US, 78235 N1 - Accession Number: 2005-07491-008. Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Caldwell, John A.; United States Air Force Research Laboratory, Brooks City-Base, TX, US. Release Date: 20051017. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Aviation; Fatigue; Military Personnel; Pharmacology. Minor Descriptor: Aerospace Personnel; CNS Stimulating Drugs; Hypnotic Drugs. Classification: Military Psychology (3800); Psychopharmacology (2580). Population: Human (10). Location: US. References Available: Y. Page Count: 13. Issue Publication Date: Jul, 2005. AB - Uncomfortable working and sleeping environments, high operational tempos, sustained operations, and insufficient staffing make fatigue a growing concern. In aviation, where a single mistake can cost millions of dollars, it is essential to optimize operator alertness. Although behavioral and administrative fatigue countermeasures should comprise the 'first line' approach for sustaining aircrew performance, pharmacological fatigue countermeasures are often required. Various components of the U.S. military have authorized the use of specific compounds for this purpose. Hypnotics such as temazepam, zolpidem, or zaleplon can mitigate the fatigue associated with insufficient or disturbed sleep. Alertness-enhancing compounds such as caffeine, modafinil, or dextroamphetamine can temporarily bridge the gap between widely spaced sleep periods. Each of these medications has a role in sustaining the safety and effectiveness of military aircrews. The present paper provides a short overview of these compounds as well as factors to be considered before choosing one or more to help manage fatigue. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - military aviation KW - fatigue KW - pharmacology KW - sleeping environments KW - working environments KW - aircrew performance KW - hypnotics KW - alertness-enhancing compounds KW - 2005 KW - Aircraft Pilots KW - Aviation KW - Fatigue KW - Military Personnel KW - Pharmacology KW - Aerospace Personnel KW - CNS Stimulating Drugs KW - Hypnotic Drugs KW - 2005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-07491-008&site=ehost-live&scope=site UR - Lynn.Caldwell@brooks.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Lipscomb, John C. AU - Mattie, David AU - Dodd, Darol E. T1 - Introduction. JO - Journal of Toxicology & Environmental Health: Part A JF - Journal of Toxicology & Environmental Health: Part A Y1 - 2005/06/11/ VL - 68 IS - 11/12 M3 - Article SP - 833 EP - 836 SN - 15287394 AB - Introduces articles related to toxicology published in the June 2005 issue of the "Journal of Toxicology and Environmental Health, Part A." KW - Toxicology KW - Periodicals N1 - Accession Number: 17321620; Lipscomb, John C. 1; Email Address: lipscomb.john@epa.gov; Mattie, David 2; Email Address: david.mattie@wpafb.af.mil; Dodd, Darol E. 3; Email Address: darol.dodd@wpafb.af.mil; Affiliations: 1: National Center for Environmental Assessment Office of Research and Development U.S. Environmental Protection Agency Cincinnati, Ohio, USA; 2: Human Effectiveness Directorate Biosciences and Protection Division Air Force Research Laboratory Wright-Patterson AFB, Ohio, USA; 3: ManTech Environmental Technology, Inc. Wright-Patterson AFB, Ohio, USA; Issue Info: 2005, Vol. 68 Issue 11/12, p833; Thesaurus Term: Toxicology; Subject Term: Periodicals; NAICS/Industry Codes: 414420 Book, periodical and newspaper merchant wholesalers; NAICS/Industry Codes: 323119 Other printing; NAICS/Industry Codes: 424920 Book, Periodical, and Newspaper Merchant Wholesalers; NAICS/Industry Codes: 451212 News Dealers and Newsstands; NAICS/Industry Codes: 451310 Book stores and news dealers; Number of Pages: 4p; Document Type: Article L3 - 10.1080/15287390590912144 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=17321620&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Sumption, Mike D. AU - Barnes, Paul N. AU - Collings, Edward W. T1 - AC Losses of Coated Conductors in Perpendicular Fields and Concepts for Twisting. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2005/06/03/Jun2005 Part 3 of 3 Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 2815 EP - 2818 SN - 10518223 AB - AC losses for striped and unstriped YBCO coated conductors are presented. The loss for a sample subdivided into 10 filaments is shown to he reduced by the expected factor of 10. Various concepts for introducing strand twisting are investigated, and some estimates are given for their superconductive filling factors and the resulting twisting-induced strain. Additionally, the concept of winding induced effective twist is described, and the effective induced twist pitch is shown to be approximately two times the length of the winding. The influence of end-soldering of the strands is described, and simple estimates of the coupling losses are given for a striped strand with soldered ends in conjunction with an effective induced twist. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductors KW - ELECTRIC currents KW - ELECTRIC transformers KW - CRITICAL currents KW - EARTH currents KW - MAGNETIC couplings N1 - Accession Number: 17429943; Source Information: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p2815; Subject Term: ELECTRIC conductors; Subject Term: ELECTRIC currents; Subject Term: ELECTRIC transformers; Subject Term: CRITICAL currents; Subject Term: EARTH currents; Subject Term: MAGNETIC couplings; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1109/TASC.2005.848233 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=17429943&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Majoros, M. AU - Glowacki, B. A. AU - Campbell, A. M. AU - Levin, G. A. AU - Barnes, P. N. AU - Polak, M. T1 - AC Losses in Striated YBCO Coated Conductors. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2005/06/03/Jun2005 Part 3 of 3 Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 2819 EP - 2822 SN - 10518223 AB - We measured AC losses in RABiTS nonstriated as well as striated coated conductors provided by the US Air Force Research Laboratory. In addition, samples with different kinds of well defined inter-filament bridging have been measured and their losses compared with those of samples with unbridged filaments and with mono-layer samples. This bridging is designed to aid current sharing between filaments, which is advantageous, but it is necessary to determine if the effect on AC losses is detrimental. It was found that AC losses of striated samples with multiple bridges are higher than those of the samples with no bridges due to significant filament coupling but even so the losses are still substantially lower than those of a monolayer sample. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALTERNATING currents KW - ELECTRIC currents KW - UNITED States. Air Force. Research Laboratory KW - METAL fibers KW - ELECTRIC conductors KW - UNITED States N1 - Accession Number: 17429944; Source Information: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p2819; Subject Term: ALTERNATING currents; Subject Term: ELECTRIC currents; Subject Term: UNITED States. Air Force. Research Laboratory; Subject Term: METAL fibers; Subject Term: ELECTRIC conductors; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1l09/TASC.2005.848234 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=17429944&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Barnes, Paul N. AU - Levin, George A. AU - Varanasi, Chakrapani AU - Sumption, Michael D. T1 - Low AC Loss Structures in YBCO Coated Conductors With Filamentary Current Sharing. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2005/06/03/Jun2005 Part 3 of 3 Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 2827 EP - 2830 SN - 10518223 AB - Architectural design improvements, such as filamentation, to YBa2 Cu3 O7-x (YBCO) coated conductors can result in a more ac-tolerant version of the conductor. However, finely made striations in the conductor make filament breakage more probable. In this case, weakly linking the filaments can enable current sharing among the filaments of striated coated conductors while maintaining reduced hysteretic losses. Data is presented for a YBCO sample divided into superconducting filaments separated such that the transverse critical current density of the striation is significantly less than the longitudinal critical current density along the filaments. A LAO substrate was physically scribed with parallel incisions to adversely affect the subsequent epitaxial growth of the YBCO layer between the striations. Vibrating sample magnetometry measurements verified a reduction in hysteretic loss compared to a control sample of epitaxially grown YBCO on an unscribed LAO substrate. Since filamentation requires a twist in the conductor for practical applications, a discussion is also given outlining an alternate means of accomplishing this by placing a twist in the coated conductor architecture itself. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductors KW - ELECTRIC currents KW - STRUCTURAL design KW - SUPERCONDUCTIVITY KW - CRITICAL currents KW - MAGNETISM N1 - Accession Number: 17429946; Source Information: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p2827; Subject Term: ELECTRIC conductors; Subject Term: ELECTRIC currents; Subject Term: STRUCTURAL design; Subject Term: SUPERCONDUCTIVITY; Subject Term: CRITICAL currents; Subject Term: MAGNETISM; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1109/TASC.2005.848236 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=17429946&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Wang, L. B. AU - Selby, P. AU - Khanal, C. AU - Levin, George AU - Haugan, Timothy J. AU - Barnes, Paul N. AU - Kwon, C. T1 - The Distribution of Transport Current in YBCO Coated Conductor With Zipper Striations. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2005/06/03/Jun2005 Part 3 of 3 Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 2950 EP - 2953 SN - 10518223 AB - An YBCO coated conductor with a zipper pattern striation is investigated by scanning laser microscopy (SLM). The distribution of transport current deduced from the VTSLM images shows that striations act as artificial harriers forcing the current to flow around them. Current sharing and redistribution are observed at the zipper area. We find the major dissipation mechanism in the sample in the superconducting state to be the current crowding at bottleneck areas. The bottleneck seems to be caused by the disabled filaments at and around the zipper area. Some filaments show the dissipation away from the zipper area. In general, we find that the lower Jc* areas have lower Tc* and high δVm, which we consider as a sign of the current crowding. For the first time, we have demonstrated that there is a high temperature signature of the lower Jc* (high dissipation) area and VTSLM can detect the signature. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductors KW - CRITICAL currents KW - HIGH temperatures KW - SUPERCONDUCTORS KW - ELECTRIC currents KW - MICROSCOPY N1 - Accession Number: 17429977; Source Information: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p2950; Subject Term: ELECTRIC conductors; Subject Term: CRITICAL currents; Subject Term: HIGH temperatures; Subject Term: SUPERCONDUCTORS; Subject Term: ELECTRIC currents; Subject Term: MICROSCOPY; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1109/TASC.2005.848670 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=17429977&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Sathiraju, Srinivas AU - Barnes, Paul N. AU - Varanasi, Chakrapafli AU - Wheeler, Robert T1 - Studies on Ba2YNbO6 Buffer Layers for Subsequent YBa2Cu3O7-δ Film Growth. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2005/06/03/Jun2005 Part 3 of 3 Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 3009 EP - 3012 SN - 10518223 AB - In this paper, we are reporting a dielectric oxide buffer Ba2 YNbO6 (BYNO) and its performance on various substrates for a potential buffer layer for the growth of YBa2Cu3O7-x (YBCO) coated conductors. Ba2YNbO6 is a moderate dielectric. Using pulsed laser deposition, epitaxial BYNO films were grown at 850° C with an oxygen pressure of 200 mTorr on single crystal MgO (100) substrate and ion beam assisted sputter deposited MgO buffered hastelloy metal substrates. The surface morphology of the BYNO films reveals out growths even though the average surface roughness is only 2-8 nm. The texture of BYNO films is ∼ 8° and thickness of these layers ∼ 100 nm on metal substrates. Highly c-axis oriented YBCO films were deposited on BYNO buffered substrates. Critical transition temperatures (Tc0) determined from electrical transport measurements vary between 88-89 K and corresponding critical current densities (Jc) ranging from 0.5-1 MA/cm² at 77 K. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COATING processes KW - PULSED laser deposition KW - SURFACES (Technology) KW - ELECTRIC currents KW - SUPERCONDUCTIVITY KW - SURFACE coatings N1 - Accession Number: 17429992; Source Information: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p3009; Subject Term: COATING processes; Subject Term: PULSED laser deposition; Subject Term: SURFACES (Technology); Subject Term: ELECTRIC currents; Subject Term: SUPERCONDUCTIVITY; Subject Term: SURFACE coatings; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1109/TASC.2005.848703 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=17429992&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Varanasi, C. V. AU - Tolliver, J. C. AU - Haugan, T. J. AU - Sathiraju, Srinivas AU - Maartense, I. AU - Barnes, P. N. T1 - Nd-Doped YBa2Cu3O7-x Films Deposited by Pulsed Laser Ablation. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2005/06/03/Jun2005 Part 3 of 3 Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 3722 EP - 3725 SN - 10518223 AB - Nd doped YBa2Cu3O7-x targets (NdxY1-xBa2Cu3 O7-x; x = 0, 0.2, 0.4, 1) were prepared in-house and were used to deposit films by pulsed laser ablation in 300 mTorr of oxygen to study the Nd substitution effects on the film properties. Film composition was found to match very closely to the composition of the targets as determined from X-ray photoelectron spectroscopy. The critical transition temperature (Ta) was found to be reduced as the Nd substitutions were increased in the films. Raman spectra taken from the films indicate that c-axis misalignment and some cation disorder may be present in the films with poor Tc. Transport critical current density (Jc) of 3 × 106 A/cm² was measured in Nd0.4Y0.6Ba2Cu3O7-x films. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER ablation KW - ELECTRIC currents KW - SUPERCONDUCTIVITY KW - PHOTOELECTRONS KW - SPECTRUM analysis KW - RAMAN effect KW - LASERS -- Industrial applications N1 - Accession Number: 17430170; Source Information: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p3722; Subject Term: LASER ablation; Subject Term: ELECTRIC currents; Subject Term: SUPERCONDUCTIVITY; Subject Term: PHOTOELECTRONS; Subject Term: SPECTRUM analysis; Subject Term: RAMAN effect; Subject Term: LASERS -- Industrial applications; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1109/TASC.2005.849414 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=17430170&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kell, Joseph W. AU - Haugan, Timothy J. AU - Locke, Mary Frances AU - Barnes, Paul N. T1 - Tb and Ce Doped Y123 Films Processed by Pulsed Laser Deposition. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2005/06/03/Jun2005 Part 3 of 3 Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 3726 EP - 3729 SN - 10518223 AB - To evaluate possible flux pinning enhancement in YBa2Cu3O7-x (Y123) films due to partial rare-earth ion substitutions, Ce and Tb doping are studied. Bulk ceramic targets of varying compositions (Y1-xRExBa2Cu3O7-x) were made with several doping levels (x = 0.00 1 to 0.1, RE = Ce or Tb) by using regular solid-state reaction and sintering procedures. These targets were used to deposit Ce and Tb doped YBCO films onto SrTiO3 single crystal substrates by pulsed laser ablation. Doped YBCO films were characterized for Tc, magnetic field dependence of Jc (at 77 K), microstructure, and other properties. The results are compared to undoped YBCO films processed in similar manner. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PULSED laser deposition KW - FLUX pinning KW - MAGNETIC fields KW - COATING processes KW - DISLOCATIONS in crystals KW - FIELD theory (Physics) N1 - Accession Number: 17430171; Source Information: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p3726; Subject Term: PULSED laser deposition; Subject Term: FLUX pinning; Subject Term: MAGNETIC fields; Subject Term: COATING processes; Subject Term: DISLOCATIONS in crystals; Subject Term: FIELD theory (Physics); Subject Term: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1109/TASC.2005.849415 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=17430171&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Barnes, Paul N. AU - Haugan, Timothy J. AU - Sumption, Michael D. AU - Harrison, B. Craig T1 - Pinning Enhancement of YBa2Cu3O7-d Thin Films With Y2BaCuO5 Nanoparticulates. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2005/06/03/Jun2005 Part 3 of 3 Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 3766 EP - 3769 SN - 10518223 AB - A comparison study is given of a typical superconducting YBa2Cu3O7-d (Y123) film and a Y123 film containing a nonsuperconducting Y2BaCuO5 (Y211) phase nanoparticulate dispersion. The inclusion of the second phase nanoparticulates was for the express purpose of increasing superconducting film's magnetic pinning strength with the resultant improved in-field critical current density. LaAlO3 substrates were used and the Y123 and Y211 nanoparticulates were grown by pulsed laser deposition (PLD). The Y211 nanoparticulate dispersion in the Y123 resulted from multiple consecutive depositions by PLD of the respective targets. The Y123 phase maintained excellent epitaxy with high in-plane orientation with and without the Y211 inclusions. With the Y211 additions, the critical current densities of the films increased significantly in applied magnetic fields as compared to the high quality Y123 film with no Y211 additions. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC fields KW - PULSED laser deposition KW - THIN films KW - SURFACES (Technology) KW - FLUX pinning KW - SUPERCONDUCTIVITY KW - COATING processes N1 - Accession Number: 17430181; Source Information: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p3766; Subject Term: MAGNETIC fields; Subject Term: PULSED laser deposition; Subject Term: THIN films; Subject Term: SURFACES (Technology); Subject Term: FLUX pinning; Subject Term: SUPERCONDUCTIVITY; Subject Term: COATING processes; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1109/TASC.2005.849426 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=17430181&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Haugan, Timothy J. AU - Barnes, Paul N. AU - Campbell, Timothy A. AU - Evans, Julianna M. AU - Kell, Joseph W. AU - Brunke, Lyle B. AU - Murphy, John P. AU - Varanasi, Chakrapani AU - Maartense, Iman AU - Wong-Ng, Winnie AU - Cook, Lawrence P. T1 - Addition of Alternate Phase Nanoparticle Dispersions to Enhance Flux Pinning of Y-Ba-Cu-O Thin Films. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity J1 - IEEE Transactions on Applied Superconductivity PY - 2005/06/03/Jun2005 Part 3 of 3 Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 3770 EP - 3773 SN - 10518223 AB - Nanoparticle dispersions of various phases were added to YBa2Cu3O7-x (YBCO or 123) thin films by multilayer pulsed laser deposition, to determine their effect on flux pinning. The different pinning materials examined include Y2BaCuO2 (Y211 or green-phase), La2BaCuO2 (La211 or brown-phase), Y2O3, CeO2, and MgO, with lattice constant mismatches varying from 0.5% to 12% with respect to YBCO. Y211 and Y2O3 provided significant pinning increases at temperatures of 65 K and 77 K, however other phases provided enhancements only at 65 K (for CeO2 and La211) for limited range of applied field strengths. An interesting correlation between Tc transition widths and pinning strengths was observed. The additions produced markedly different nanoparticle and film microstructures, as well as superconducting properties. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUX pinning KW - NANOPARTICLES KW - PULSED laser deposition KW - THIN films KW - PARTICLES KW - DISLOCATIONS in crystals KW - MICROSTRUCTURE KW - MATERIALS N1 - Accession Number: 17430182; Source Information: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p3770; Subject Term: FLUX pinning; Subject Term: NANOPARTICLES; Subject Term: PULSED laser deposition; Subject Term: THIN films; Subject Term: PARTICLES; Subject Term: DISLOCATIONS in crystals; Subject Term: MICROSTRUCTURE; Subject Term: MATERIALS; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1109/TASC.2005.849427 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=17430182&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Amemiya, Naoyuki AU - Yoda, Keiji AU - Kasai, Satoshi AU - Jiang, Zhenan AU - Levin, George A. AU - Barnes, Paul N. AU - Oberly, Charles E. T1 - AC Loss Characteristics of Multifilamentary YBCO Coated Conductors. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2005/06/02/Jun2005 Part 2 of 3 VL - 15 IS - 2 M3 - Article SP - 1637 EP - 1642 SN - 10518223 AB - One of the methods to reduce magnetization loss of YBCO coated conductors in a perpendicular magnetic field is subdividing the YBCO layer into filaments and twisting them as a whole. A 10 mm wide multifilamentary YBCO coated conductor with 200 μm wide filaments was prepared by striation using the laser ablation technique. The number of filaments was 40. The sample length was varied from 100 mm to 25 mm, and their magnetization loss was measured at various frequencies. The measured magnetization losses were scaled using sample length, frequency, and field amplitude. This clarifies the magnetization loss characteristics of multifilamentary YBCO coated conductors and obtains empirical expressions for the magnetization loss. The measured loss was compared with the loss calculated numerically using a two dimensional FEM model. The experimentally confirmed effect of striation to reduce the magnetization loss was compared with theoretical predictions. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDUSTRIAL applications KW - SUPERCONDUCTING magnets KW - MAGNETIZATION KW - MAGNETIC fields KW - ELECTROMAGNETS KW - SUPERCONDUCTORS KW - LASERS KW - AC loss KW - multifilament KW - superconductors KW - YB CO N1 - Accession Number: 17400048; Amemiya, Naoyuki 1; Email Address: ame@rain.dnj.ynu.ac.jp; Yoda, Keiji 1; Email Address: yoda@rain.dnj.ynu.ac.jp; Kasai, Satoshi 1; Email Address: kasai@rain.dnj.ynu.ac.jp; Jiang, Zhenan 1; Email Address: kyo@rain.dnj.ynu.ac.jp; Levin, George A. 2; Email Address: George.Levin@wpafb.af.mil; Barnes, Paul N. 2; Email Address: paul.barnes@wpafb.af.mil; Oberly, Charles E. 2; Email Address: charles.oberly@wpafb.af.mil; Affiliations: 1: Yokohama National University, Yokohama 240-8501, Japan.; 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 43210 USA.; Issue Info: Jun2005 Part 2 of 3, Vol. 15 Issue 2, p1637; Thesaurus Term: INDUSTRIAL applications; Subject Term: SUPERCONDUCTING magnets; Subject Term: MAGNETIZATION; Subject Term: MAGNETIC fields; Subject Term: ELECTROMAGNETS; Subject Term: SUPERCONDUCTORS; Subject Term: LASERS; Author-Supplied Keyword: AC loss; Author-Supplied Keyword: multifilament; Author-Supplied Keyword: superconductors; Author-Supplied Keyword: YB CO; NAICS/Industry Codes: 335315 Switchgear and switchboard, and relay and industrial control apparatus manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TASC.2005.849216 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=17400048&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Oberly, Charles E. AU - Razidlo, Benjamin AU - Rodriguez, Fernando T1 - Conceptual Approach to the Ultimate Low AC Loss YBCO Superconductor. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2005/06/02/Jun2005 Part 2 of 3 VL - 15 IS - 2 M3 - Article SP - 1643 EP - 1646 SN - 10518223 AB - Wide tapes of YBCO coated conductors make minimization of ac loss very difficult. Subdivision of the tape into narrow filaments does not provide complete transposition when twisted and current sharing is not equalized due to inductance differences. For ac power applications operating near 400 Hz for military aircraft power systems, equal inductance filaments and short twist pitch are very important to loss minimization. A fully transposed YBCO tape that approximates a Rutherford cable has been conceived to minimize ac loss at high frequency. Retention of optimal texture of YBCO in edge turnaround regions and filament crossovers in the Rutherford tape is essential. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES KW - SUPERCONDUCTING magnets KW - ELECTRIC inductance KW - ALTERNATING currents KW - ELECTROMAGNETISM KW - SUPERCONDUCTORS KW - AC loss KW - Rutherford configuration KW - striated filaments KW - YBCO N1 - Accession Number: 17400049; Oberly, Charles E. 1; Email Address: charles.oberly@wpafb.af.mil; Razidlo, Benjamin 1; Rodriguez, Fernando 1; Affiliations: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433 USA.; Issue Info: Jun2005 Part 2 of 3, Vol. 15 Issue 2, p1643; Thesaurus Term: AIRPLANES; Subject Term: SUPERCONDUCTING magnets; Subject Term: ELECTRIC inductance; Subject Term: ALTERNATING currents; Subject Term: ELECTROMAGNETISM; Subject Term: SUPERCONDUCTORS; Author-Supplied Keyword: AC loss; Author-Supplied Keyword: Rutherford configuration; Author-Supplied Keyword: striated filaments; Author-Supplied Keyword: YBCO; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TASC.2005.849219 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=17400049&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Levin, George A. AU - Barnes, Paul N. T1 - Concept of Multiply Connected Superconducting Tapes. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2005/06/02/Jun2005 Part 2 of 3 VL - 15 IS - 2 M3 - Article SP - 2158 EP - 2161 SN - 10518223 AB - The possibility of a substantial reduction of weight and size of electrical generators is the main incentive behind the effort to develop superconducting armature windings based on Y1Ba2Cu3O6+x (YBCO) coated conductors in the form of wide tapes with large aspect ratio. The main obstacle to the application of coated superconductors in stator windings is the large losses incurred due to the ac magnetic field produced by the rotor's dc coils of the field windings. In the range of frequencies typical for aircraft generators, the hysteretic losses in wide tapes are unacceptably high. They can be reduced by dividing the YBCO layer into multiple filaments separated by non-superconducting barriers. However, the lack of current sharing between the filaments makes the conductor vulnerable to the localized defects, so that a single blockage can impede the flow of transport current through the whole length of a given filament. We present estimates of reliability as well as the magnetization losses in multiply connected superconductors. In this type of superconducting tape, a sparse network of superconducting bridges, which allows for current sharing, connects the filaments. The trade-off between the different types of losses and the connectivity requirement imposes restrictions on the number of filaments and properties of the network of bridges. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC generators -- Windings KW - ARMATURES KW - SOLID state electronics KW - SUPERCONDUCTORS KW - ELECTRONIC materials KW - CRYOELECTRONICS KW - Coated superconductors KW - magnetization losses N1 - Accession Number: 17400176; Levin, George A. 1; Email Address: george.levin@wpafb.af.mil; Barnes, Paul N. 2; Email Address: paul.barnes@wpafb.af.mil; Affiliations: 1: National Research Council, Bldg. 450, Wright-Patterson AFB, OH 45433 USA.; 2: Air Force Research Laboratory, Propulsion Directorate, Bldg. 450, Wright-Patterson AFB, OH 45433 USA.; Issue Info: Jun2005 Part 2 of 3, Vol. 15 Issue 2, p2158; Subject Term: ELECTRIC generators -- Windings; Subject Term: ARMATURES; Subject Term: SOLID state electronics; Subject Term: SUPERCONDUCTORS; Subject Term: ELECTRONIC materials; Subject Term: CRYOELECTRONICS; Author-Supplied Keyword: Coated superconductors; Author-Supplied Keyword: magnetization losses; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TASC.2005.849601 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=17400176&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Schmidt, Paul T1 - The Sword and the Purse: The Why and How of Congressional Delegation of Budget Authority to DoD. JO - Armed Forces Comptroller JF - Armed Forces Comptroller Y1 - 2005///Summer2005 VL - 50 IS - 3 M3 - Article SP - 41 EP - 44 PB - American Society of Military Comptrollers SN - 00042188 AB - Provides an overview of the discussion by U.S. Naval Commander Philip J. Candreva on the delegation of budget authority to the Department of Defense, during the American Society of Military Comptrollers Professional Development Institute 2005 in Salt Lake City, Utah. Overview of civil-military relations; Constitutional provisions on congressional authority; Examination of the application of the Defense Emergency Response Fund for the global war on terrorism. KW - DELEGATION of authority KW - ARMED Forces -- Appropriations & expenditures KW - LEGISLATIVE power KW - WAR on Terrorism, 2001-2009 KW - UNITED States. Congress KW - UNITED States. Dept. of Defense N1 - Accession Number: 18569132; Schmidt, Paul 1,2; Affiliations: 1: Financial specialist, Air Force Research Lab, Sensors Directorate, Air Force Material Command; 2: Member, ASMC Aviation Chapter; Issue Info: Summer2005, Vol. 50 Issue 3, p41; Thesaurus Term: DELEGATION of authority; Thesaurus Term: ARMED Forces -- Appropriations & expenditures; Subject Term: LEGISLATIVE power; Subject Term: WAR on Terrorism, 2001-2009 ; Company/Entity: UNITED States. Congress ; Company/Entity: UNITED States. Dept. of Defense; NAICS/Industry Codes: 921120 Legislative Bodies; Number of Pages: 4p; Illustrations: 1 Diagram; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=18569132&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Miller, Thomas M. AU - Ballenthin, John O. AU - Viggiano, A.A. AU - Anderson, Bruce E. AU - Wey, Chowen C. T1 - Mass distribution and concentrations of negative chemiions in the exhaust of a jet engine: Sulfuric acid concentrations and observation of particle growth JO - Atmospheric Environment JF - Atmospheric Environment Y1 - 2005/06// VL - 39 IS - 17 M3 - Article SP - 3069 EP - 3079 SN - 13522310 AB - Abstract: Measurements of negative-ion composition and density have been made in the exhaust of a J85-GE-5H turbojet, at ground level, as part of the NASA-EXCAVATE campaign. The mass spectrometer was placed 3m from the exhaust plane of the engine. Measurements were done as a function of engine power in six steps from idle (50%) to military power (100%). Since the exhaust velocity changes with power, this also corresponds to a time evolution for ion growth. At 100% power most of the ions are HSO4− with minor amounts of HSO4−(H2O) n . With decreasing engine power the degree of hydration increases. In addition, ions with a 139-amu core dominate the spectra at lower engine power. The chemical identity of this ion is unknown. Observation of a small amount of NO3− core ions in the high-power spectra allows the determination of H2SO4 concentrations, which turn out to be a fraction-of-a-percent of the total sulfur in the fuel. Combining the present data with several previous composition measurements allows one to observe ion evolution from bare ions to ions with masses >8000amu. Ion densities are derived and appear consistent with previous measurements used in modeling studies indicating that ion nucleation is a probable mechanism for volatile aerosol formation. [Copyright &y& Elsevier] AB - Copyright of Atmospheric Environment is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Ions KW - Aerosols (Sprays) KW - Sulfuric acid KW - Mass spectrometers KW - Aerosol growth KW - Ion-induced nucleation KW - Jet engine KW - Mass spectrometer N1 - Accession Number: 17953687; Miller, Thomas M. 1; Ballenthin, John O. 1; Viggiano, A.A. 1; Email Address: albert.viggiano@hanscom.af.mil; Anderson, Bruce E. 2; Wey, Chowen C. 3; Affiliations: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, 29 Randolph Road, Hanscom AFB, MA 01731-3010, USA; 2: Atmospheric Sciences Division, National Aeronautics and Space Administration, Langley Research Center, Hampton, VA 23681-0001, USA; 3: Engine Components Division, Army Research Laboratory/High Speed Systems Office, National Aeronautics and Space Administration, Glenn Research Center, Cleveland, OH 44135, USA; Issue Info: Jun2005, Vol. 39 Issue 17, p3069; Thesaurus Term: Ions; Thesaurus Term: Aerosols (Sprays); Thesaurus Term: Sulfuric acid; Subject Term: Mass spectrometers; Author-Supplied Keyword: Aerosol growth; Author-Supplied Keyword: Ion-induced nucleation; Author-Supplied Keyword: Jet engine; Author-Supplied Keyword: Mass spectrometer; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.atmosenv.2005.01.034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=17953687&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Seale, Darryl A. AU - Parco, James E. AU - Stein, William E. AU - Rapoport, Amnon AD - U NV, Las Vegas AD - US Air Force Academy AD - TX A&M U AD - U AZ and Hong Kong U Science and Technology T1 - Joining a Queue or Staying Out: Effects of Information Structure and Service Time on Arrival and Staying Out Decisions JO - Experimental Economics JF - Experimental Economics Y1 - 2005/06// VL - 8 IS - 2 SP - 117 EP - 144 SN - 13864157 N1 - Accession Number: 0800704; Keywords: Information; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 200511 N2 - We study a class of single-server queueing systems with a finite population size, FIFO queue discipline, and no balking or reneging. In contrast to the predominant assumptions of queueing theory of exogenously determined arrivals and steady state behavior, we investigate queueing systems with endogenously determined arrival times and focus on transient rather than steady state behavior. When arrival times are endogenous, the resulting interactive decision process is modeled as a non-cooperative n-person game with complete information. Assuming discrete strategy spaces, the mixed-strategy equilibrium solution for groups of n = 20 agents is computed using a Markov chain method. Using a 2 x 2 2 between-subject design (private vs. public information by short vs. long service time), arrival and staying out decisions are presented and compared to the equilibrium predictions. The results indicate that players generate replicable patterns of behavior that are accounted for remarkably well on the aggregate, but not individual, level by the mixed-strategy equilibrium solution unless congestion is unavoidable and information about group behavior is not provided. KW - Criteria for Decision-Making under Risk and Uncertainty D81 KW - Search; Learning; Information and Knowledge; Communication; Belief D83 KW - Marketing M31 L3 - http://link.springer.com/journal/volumesAndIssues/10683 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0800704&site=ehost-live&scope=site UR - http://dx.doi.org/10.1007/s10683-005-0872-1 UR - http://link.springer.com/journal/volumesAndIssues/10683 DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Best, Steven R. T1 - Correction to "A Discussion on the Quality Factor of Impedance Matched Electrically Small Wire Antennas". JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2005/06// Y1 - 2005/06// VL - 53 IS - 6 M3 - Correction notice SP - 2133 EP - 2133 SN - 0018926X AB - Presents a correction to the article "A Discussion on the Quality Factor of Impedance Matched Electrically Small Wire Antennas," published in previous issue of the journal "IEEE Transactions on Antennas and Propagation." KW - ELECTRIC impedance N1 - Accession Number: 17394021; Source Information: Jun2005, Vol. 53 Issue 6, p2133; Subject Term: ELECTRIC impedance; Subject Term: ; Number of Pages: 1p; ; Document Type: Correction notice; L3 - 10.1109/TAP.2005.848525 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=17394021&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Rangaswamy, Muralidhar T1 - Statistical Analysis of the Nonhomogeneity Detector for Non-Gaussian Interference Backgrounds. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing J1 - IEEE Transactions on Signal Processing PY - 2005/06// Y1 - 2005/06// VL - 53 IS - 6 M3 - Article SP - 2101 EP - 2111 SN - 1053587X AB - We derive the nonhomogeneity detector (NHD) for non-Gaussian interference scenarios and present a statistical analysis of the method. The non-Gaussian interference scenario is assumed to be modeled by a spherically invariant random process (SIRP). We present a method for selecting representative (homogeneous) training data based on our statistical analysis of the NHD for finite sample support used in covariance estimation. In particular, an exact theoretical expression for the NHD test statistic probability density function (PDF) is derived. Performance analysis of the NHD is presented using both simulated data and measured data from the multichannel airborne radar measurement (MCARM) program. A performance comparison with existing NHD approaches is also included. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIGNAL detection KW - ELECTRONICS KW - ELECTRIC interference KW - STATISTICS KW - SIGNAL processing KW - STOCHASTIC processes N1 - Accession Number: 17181092; Source Information: Jun2005, Vol. 53 Issue 6, p2101; Subject Term: SIGNAL detection; Subject Term: ELECTRONICS; Subject Term: ELECTRIC interference; Subject Term: STATISTICS; Subject Term: SIGNAL processing; Subject Term: STOCHASTIC processes; Subject Term: ; Number of Pages: 11p; ; Document Type: Article; L3 - 10.1 109/TSP.2005.847843 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=17181092&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 106491737 T1 - Communication to facilitate care of the obstetric surgical patient in a postanesthesia care setting. AU - Torgersen KL Y1 - 2005/06// N1 - Accession Number: 106491737. Language: English. Entry Date: 20050729. Revision Date: 20150711. Publication Type: Journal Article; tables/charts. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. NLM UID: 9610507. KW - Communication KW - Perianesthesia Nursing KW - Perinatal Care KW - Surgery, Operative -- In Pregnancy KW - American Society of PeriAnesthesia Nurses -- Standards KW - Association of Women's Health, Obstetric, and Neonatal Nurses -- Standards KW - Female KW - Fetus KW - Heart Rate, Fetal -- Evaluation KW - Nursing Assessment KW - Nursing Practice -- Standards KW - Obstetric Nursing -- Standards KW - Patient Discharge KW - Perianesthesia Nursing -- Education KW - Personnel Staffing and Scheduling KW - Post Anesthesia Care Units KW - Pregnancy SP - 177 EP - 184 JO - Journal of PeriAnesthesia Nursing JF - Journal of PeriAnesthesia Nursing JA - J PERIANESTH NURS VL - 20 IS - 3 CY - Philadelphia, Pennsylvania PB - W B Saunders SN - 1089-9472 AD - Colonel, United States Air Force Nurse Corps, Chief Nurse, 60th Medical Group (SGN), Travis AFB, CA; Keiko.Torgersen@travis.af.mil U2 - PMID: 15933964. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106491737&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Coletta, Damon T1 - The Sheriff: America's Defense of the New World Order. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College J1 - Parameters: U.S. Army War College PY - 2005///Summer2005 Y1 - 2005///Summer2005 VL - 35 IS - 2 M3 - Book Review SP - 149 EP - 152 SN - 00311723 AB - Reviews the book "The Sheriff: America's Defense of the New World Order," by Colin S. Gray. KW - SHERIFF: America's Defense of the New World Order, The (Book) KW - GRAY, Colin S. KW - GEOPOLITICS KW - NONFICTION N1 - Accession Number: 17207868; Source Information: Summer2005, Vol. 35 Issue 2, p149; Subject Term: SHERIFF: America's Defense of the New World Order, The (Book); Subject Term: GRAY, Colin S.; Subject Term: GEOPOLITICS; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 4p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=17207868&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 106496586 T1 - Designing a strength and conditioning facility at the United States Air Force Academy. AU - Hedrick A Y1 - 2005/06// N1 - Accession Number: 106496586. Language: English. Entry Date: 20050812. Revision Date: 20150818. Publication Type: Journal Article; pictorial; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Fitness Centers KW - Muscle Strengthening KW - United States Air Force KW - Facility Design and Construction KW - United States SP - 64 EP - 68 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 27 IS - 3 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. AB - Outstanding strength and conditioning facilities are a requirement at any institution competing at the NCAA Division I (D-I) level. In our situation, most of our athletes would be considered deficient in some area (size, speed, and athleticism) by normal D-I standards. The challenge is to take these athletes and develop them so that we can compete at the D-I level, and facilities play an important part in this challenge. SN - 1524-1602 AD - US Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106496586&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Designing a Strength and Conditioning Facility at the United States Air Force Academy. AU - Hedrick, Allen JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) Y1 - 2005/06// VL - 27 IS - 3 SP - 64 EP - 68 SN - 15241602 N1 - Accession Number: 17312965; Author: Hedrick, Allen: 1 ; Author Affiliation: 1 United States Air Force Academy, Colorado Springs, Colorado; No. of Pages: 5; Language: English; Publication Type: Article; Update Code: 20050616 N2 - Outstanding strength and conditioning facilities are a requirement at any institution competing at the NCAA Division I (D-l) level. In our situation, most of our athletes would be considered deficient in some area (size, speed, and athleticism) by normal 0-1 standards,The challenge is to take these athletes and develop them so that we can compete at the D-l level, and facilities play an important part in this challenge. ABSTRACT FROM AUTHOR KW - *SPORTS facilities KW - *PHYSICAL fitness KW - *PHYSICAL education KW - *EXERCISE KW - *ATHLETES KW - equipment selection KW - facility design UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=17312965&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 106496598 T1 - College coaches corner. Learning from each other: keeping the weight room clean. AU - Hedrick A AU - Rogers R AU - Bennett S Y1 - 2005/06// N1 - Accession Number: 106496598. Language: English. Entry Date: 20050812. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Muscle Strengthening KW - Fitness Centers KW - Athletes, College SP - 88 EP - 89 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 27 IS - 3 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. AB - This column discusses methods used by college strength coaches to keep the weight room clean. SN - 1524-1602 AD - US Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106496598&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Learning From Each Other: Keeping the Weight Room Clean. AU - Wiley, Sara AU - Rogers, Robb AU - Bennett, Scott AU - Hendrick, Allen JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) Y1 - 2005/06// VL - 27 IS - 3 SP - 88 EP - 89 SN - 15241602 N1 - Accession Number: 17312996; Author: Wiley, Sara: 1 Author: Rogers, Robb: 2 Author: Bennett, Scott: 3 Author: Hendrick, Allen: 4 email: ARHedrick@Adelphla.net. ; Author Affiliation: 1 Co-Head Strength and Conditioning Coach, University of Minnesota: 2 Football Speed, Strength and Conditioning Coach, Middle Tennessee State University: 3 Head Strength and Conditioning Coach, University of Wyoming: 4 United States Air Force Academy, Colorado Springs, Colorado; No. of Pages: 2; Language: English; Publication Type: Article; Update Code: 20050616 N2 - This column discusses methods used by college strength coaches to keep the weight room clean. ABSTRACT FROM AUTHOR KW - *COACHES (Athletics) KW - *SPORTS personnel KW - *PHYSICAL education facilities KW - *PHYSICAL fitness centers KW - *UNIVERSITIES & colleges UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=17312996&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 2005-06418-002 AN - 2005-06418-002 AU - Webb, James T. AU - Pilmanis, Andrew A. AU - Balldin, Ulf I. AU - Fischer, Joseph R. T1 - Altitude Decompression Sickness Susceptibility: Influence of Anthropometric and Physiologic Variables. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2005/06// VL - 76 IS - 6,Sect1 SP - 547 EP - 551 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Webb, James T., 13818 Chittim Oak, San Antonio, TX, US, 78232 N1 - Accession Number: 2005-06418-002. Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Webb, James T.; Wyle Laboratories - Life Sciences Systems and Services, San Antonio, TX, US. Release Date: 20051017. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Altitude Effects; Decompression Effects; Physiology; Susceptibility (Disorders). Classification: Physical & Somatoform & Psychogenic Disorders (3290). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 5. Issue Publication Date: Jun, 2005. AB - Introduction: There is considerable variability in individual susceptibility to altitude decompression sickness (DCS). The Air Force Research Laboratory Altitude DCS Research Database consists of extensive information on 2980 altitude exposures conducted with consistent procedures and endpoint criteria. We used this database to quantify the variation in susceptibility and determine if anthropometric and/or physiologic variables could be used to predict DCS risk. Methods: There were 240 subjects who participated in at least 4 of 70 exposure profiles in which between 5 and 95% of all subjects tested developed DCS symptoms. A subject/study ratio (SSR) was calculated by dividing the DCS experienced by a subject during all their exposures by the DCS incidence for all subjects who participated in the identical exposures. The SSR was used to identify the relative susceptibility of subjects for use in analyzing possible relationships between DCS susceptibility and the variables of height, weight, body mass index, age, percent body fat, and aerobic capacity. Results: The DCS incidence was 46.5% during 1879 subject-exposures by subjects exposed at least 4 times. A significant relationship existed between higher DCS susceptibility and the combination of lower aerobic capacity and greater weight (p < 0.05). Discussion: Despite a correlation, less than 13% of the variation in DCS susceptibility was accounted for by the best combination of variables, weight and Vo2max. Conclusion: Differences in DCS susceptibility cover a wide range and appear to be related to some anthropometric and physiologic variables. However, there was insufficient correlation to allow prediction of an individual's susceptibility. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - altitude decompression sickness KW - altitude exposures KW - anthropometric & physiologic variables KW - susceptibility KW - 2005 KW - Altitude Effects KW - Decompression Effects KW - Physiology KW - Susceptibility (Disorders) KW - 2005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-06418-002&site=ehost-live&scope=site UR - james.webb.ctr@brooks.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-06959-006 AN - 2005-06959-006 AU - Caldwell, John A. AU - Mu, Qiwen AU - Smith, Jennifer K. AU - Mishory, Alexander AU - Caldwell, J. Lynn AU - Peters, Gordon AU - Brown, David L. AU - George, Mark S. T1 - Are Individual Differences in Fatigue Vulnerability Related to Baseline Differences in Cortical Activation? JF - Behavioral Neuroscience JO - Behavioral Neuroscience JA - Behav Neurosci Y1 - 2005/06// VL - 119 IS - 3 SP - 694 EP - 707 CY - US PB - American Psychological Association SN - 0735-7044 SN - 1939-0084 AD - Caldwell, John A., Aviation Sustained Operations Research, Air Force Research Laboratory, Brooks City-Base, TX, US, 78235 N1 - Accession Number: 2005-06959-006. PMID: 15998190 Partial author list: First Author & Affiliation: Caldwell, John A.; Aviation Sustained Operations Research, U.S. Air Force Research Laboratory, Brooks City-Base, TX, US. Release Date: 20050705. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Electrical Activity; Fatigue; Individual Differences; Military Personnel. Minor Descriptor: Aviation; Sleep; Sleep Deprivation. Classification: Neuropsychology & Neurology (2520); Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Sternberg Working Memory Task. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 14. Issue Publication Date: Jun, 2005. Publication History: Accepted Date: Jan 26, 2005; Revised Date: Jan 26, 2005; First Submitted Date: Apr 26, 2004. Copyright Statement: American Psychological Association. 2005. AB - Recent evidence suggests that underlying patterns of cortical activation may partially account for individual differences in susceptibility to the effects of sleep deprivation. Here, functional magnetic resonance imaging (fMRI) was used to examine the activation of military pilots whose sleep-deprivation vulnerability previously was quantified. A Sternberg Working Memory Task (SWMT; S. Sternberg, 1966) was completed alternately with a control task during a 13-min blood oxygen level-dependent fMRI scan. Examination of the activated voxels in response to SWMT indicated that, as a group, the pilots were more similar to fatigue-resistant nonpilots than to fatigue-vulnerable nonpilots. Within the pilots, cortical activation was significantly related to fatigue vulnerability on simulator-flight performance. These preliminary data suggest that baseline fMRI scan activation during a working memory task may correlate with fatigue susceptibility. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - functional magnetic resonance imaging KW - individual differences KW - sleep deprivation KW - aviation KW - fatigue KW - fatigue vulnerability KW - cortical activation KW - military pilots KW - 2005 KW - Aircraft Pilots KW - Electrical Activity KW - Fatigue KW - Individual Differences KW - Military Personnel KW - Aviation KW - Sleep KW - Sleep Deprivation KW - 2005 DO - 10.1037/0735-7044.119.3.694 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-06959-006&site=ehost-live&scope=site UR - john.caldwell@brooks.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Shore, R. A. AU - Yaghjian, A. D. T1 - Travelling electromagnetic waves on linear periodic arrays of lossless spheres. JO - Electronics Letters JF - Electronics Letters Y1 - 2005/05/12/ VL - 41 IS - 10 M3 - Article SP - 578 EP - 580 SN - 00135194 AB - Source scattering-matrix analyses of travelling waves on infinite linear periodic arrays of loss less spheres and of small electric wires are applied to determine the propagation constants of dipolar travelling waves on an infinite linear periodic chain of metallic nanospheres. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC waves KW - ELECTROMAGNETIC theory KW - ELECTRIC cables KW - ELECTRIC conductors KW - ELECTRIC fields KW - MAGNETIC fields N1 - Accession Number: 17035473; Shore, R. A. 1; Email Address: robert.shore@hanscom.af.mil; Yaghjian, A. D. 1; Affiliations: 1: Air Force Research Laboratory, 80 Scott Drive, Hansconz AFB, MA 01731-2909, USA; Issue Info: 5/12/2005, Vol. 41 Issue 10, p578; Subject Term: ELECTROMAGNETIC waves; Subject Term: ELECTROMAGNETIC theory; Subject Term: ELECTRIC cables; Subject Term: ELECTRIC conductors; Subject Term: ELECTRIC fields; Subject Term: MAGNETIC fields; NAICS/Industry Codes: 335920 Communication and energy wire and cable manufacturing; NAICS/Industry Codes: 335990 All other electrical equipment and component manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1049/el:20058372 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=17035473&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Shore, Robert A. AU - Yaghjian, Arthur D. T1 - Dual-Surface Integral Equations in Electromagnetic Scattering. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2005/05// Y1 - 2005/05// VL - 53 IS - 5 M3 - Article SP - 1706 EP - 1709 SN - 0018926X AB - A brief review is given of the derivation and application of dual-surface Integral equations, which eliminate the spurious resonances from the solution to the original electric-field and magnetic-field Integral equations applied to perfectly electrically conducting scatterers. Emphasis is placed on numerical solutions of the dual-surface electric-field integral equation for three-dimensional perfectly electrically conducting scatterers. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETISM KW - MAGNETIC induction KW - INTEGRAL equations KW - NUMERICAL analysis KW - ELECTRIC fields KW - ELECTROMAGNETIC fields N1 - Accession Number: 17052553; Source Information: May2005, Vol. 53 Issue 5, p1706; Subject Term: ELECTROMAGNETISM; Subject Term: MAGNETIC induction; Subject Term: INTEGRAL equations; Subject Term: NUMERICAL analysis; Subject Term: ELECTRIC fields; Subject Term: ELECTROMAGNETIC fields; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; L3 - 10.1109/TAP2005.846806 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=17052553&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ketchum, Norma S. AU - Michalek, Joel E. T1 - Postservice Mortality of Air Force Veterans Occupationally Exposed to Herbicides during the Vietnam War: 20-Year Follow-Up Results. JO - Military Medicine JF - Military Medicine Y1 - 2005/05// VL - 170 IS - 5 M3 - Article SP - 406 EP - 413 PB - AMSUS SN - 00264075 AB - Since 1982, the Air Force Health Study has continued to assess the mortality for veterans of Operation Ranch Hand, the unit responsible for aerially spraying herbicides in Vietnam. The mortality for 1,262 Ranch Hand veterans to December 31, 1999 was contrasted with that for 19,078 comparison veterans. The relative risk (RR) for all-cause death was borderline significantly increased (RR, 1.15; 95% confidence interval, 1.0-1.3; p = 0.06). The risk of death caused by cancer was not increased (RR = 1.0), but the risk of death caused by circulatory system diseases was significantly increased among en-listed ground crew workers (RR = 1.7; 95% confidence interval, 1.2-2,4: p = 0.001), Results for Ranch Hand all-cause death differed from previous reports, with the RR now exceeding 1.0, The risk of death attributable to circulatory system diseases continues to be increased, especially for enlisted ground crew, a subgroup with relatively high skin exposure to herbicides. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MORTALITY KW - VIETNAM veterans KW - HERBICIDES in war KW - VIETNAM War, 1961-1975 KW - UNITED States. Air Force N1 - Accession Number: 17144736; Ketchum, Norma S. 1; Michalek, Joel E. 1; Source Information: May2005, Vol. 170 Issue 5, p406; Subject: MORTALITY; Subject: VIETNAM veterans; Subject: HERBICIDES in war; Subject: VIETNAM War, 1961-1975; Subject: UNITED States. Air Force; Number of Pages: 8p; Illustrations: 8 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=17144736&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 106508221 T1 - Postservice mortality of Air Force veterans occupationally exposed to herbicides during the Vietnam War: 20-year follow-up results. AU - Michalek JE AU - Ketchum NS Y1 - 2005/05// N1 - Accession Number: 106508221. Language: English. Entry Date: 20050902. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 2984771R. KW - Aerospace Medicine KW - Dioxins -- Adverse Effects KW - Herbicides -- Adverse Effects KW - Military Personnel KW - Mortality KW - Neoplasms -- Mortality KW - Occupational Exposure KW - Vascular Diseases -- Mortality KW - Veterans KW - Case Control Studies KW - Cause of Death KW - Confidence Intervals KW - Dioxins -- Blood KW - International Classification of Diseases KW - Male KW - Prospective Studies KW - Relative Risk KW - Statistical Significance KW - Time Factors KW - United States KW - United States Air Force KW - Vietnam KW - Human SP - 406 EP - 413 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 170 IS - 5 CY - Bethesda, Maryland PB - AMSUS AB - Since 1982, the Air Force Health Study has continued to assess the mortality for veterans of Operation Ranch Hand, the unit responsible for aerially spraying herbicides in Vietnam. The mortality for 1,262 Ranch Hand veterans to December 31, 1999 was contrasted with that for 19,078 comparison veterans. The relative risk (RR) for all-cause death was borderline significantly increased (RR, 1.15; 95% confidence interval, 1.0-1.3; p = 0.06). The risk of death caused by cancer was not increased (RR = 1.0), but the risk of death caused by circulatory system diseases was significantly increased among enlisted ground crew workers (RR = 1.7; 95% confidence interval, 1.2-2.4; p = 0.001). Results for Ranch Hand all-cause death differed from previous reports, with the RR now exceeding 1.0. The risk of death attributable to circulatory system diseases continues to be increased, especially for enlisted ground crew, a subgroup with relatively high skin exposure to herbicides. SN - 0026-4075 AD - Air Force Research Laboratory, Brooks City-Base, TX 78235-5137 U2 - PMID: 15974208. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106508221&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 106460856 T1 - Fatigue in aviation. AU - Caldwell JA Y1 - 2005/05// N1 - Accession Number: 106460856. Language: English. Entry Date: 20060623. Revision Date: 20150711. Publication Type: Journal Article; review. Journal Subset: Continental Europe; Europe; Peer Reviewed; Public Health. NLM UID: 101230758. KW - Aviation KW - Fatigue -- Prevention and Control KW - Occupational Hazards KW - Pilots KW - Adaptation, Physiological KW - Aerospace Medicine KW - Circadian Rhythm KW - Fatigue -- Complications KW - Fatigue -- Education KW - Fatigue -- Etiology KW - Fatigue -- Psychosocial Factors KW - Homeostasis KW - Jet Lag Syndrome -- Prevention and Control KW - Light KW - Melatonin -- Therapeutic Use KW - Occupational Health KW - Occupational Safety KW - Personnel Staffing and Scheduling KW - Sleep KW - Sleep Deprivation -- Complications KW - Surveys KW - Wakefulness KW - Workload SP - 85 EP - 96 JO - Travel Medicine & Infectious Disease JF - Travel Medicine & Infectious Disease JA - TRAVEL MED INFECT DIS VL - 3 IS - 2 CY - Philadelphia, Pennsylvania PB - Elsevier Inc. SN - 1477-8939 AD - Aviation Sustained Operations Team, Fatigue Countermeasures Branch, Air Force Research Laboratory, 2485 Gillingham Drive, Brooks City-Base, TX 78235; john.caldwell@brooks.af.mil U2 - PMID: 17292011. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106460856&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2005-09372-005 AN - 2005-09372-005 AU - Daniel, Terry E. AU - Parco, James E. T1 - Fair, Efficient and Envy-Free Bargaining: An Experimental Test of the Brams-Taylor Adjusted Winner Mechanism. JF - Group Decision and Negotiation JO - Group Decision and Negotiation Y1 - 2005/05// VL - 14 IS - 3 SP - 241 EP - 264 CY - Germany PB - Springer SN - 0926-2644 SN - 1572-9907 AD - Daniel, Terry E., University of Alberta, Dept. of Finance and Management Science, Edmonton, AB, Canada, T6G 2R6 N1 - Accession Number: 2005-09372-005. Partial author list: First Author & Affiliation: Daniel, Terry E.; University of Alberta, Dept. of Finance and Management Science, Edmonton, AB, Canada. Release Date: 20051121. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Bargaining; Conflict Resolution; Decision Making; Game Theory; Preferences. Classification: Group & Interpersonal Processes (3020). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 24. Issue Publication Date: May, 2005. AB - The Adjusted Winner mechanism for two-player bargaining has been theoretically shown to produce 'fair' (efficient and envy-free) outcomes (Brams and Taylor 1996). We study this claim experimentally in a bilateral bargaining game of incomplete information for two divisible goods using three information conditions. Results indicate that the Adjusted Winner mechanism can be quite effective in achieving both efficient, equitable and envy-free outcomes in an experimental setting but results vary greatly depending on the knowledge that each party has of the preferences of their bargaining partner. Under conditions of common knowledge, when players have competing preferences, their bilateral decisions converge toward efficient outcomes, yet only one-third can be classified as 'envy-free.' In an environment where there is more uncertainty about preferences, pronounced strategic bidding emerges yet the result is twice as many envy-fee outcomes with increased levels of efficiency. Despite the fact that players dramatically misrepresent their true valuation for objects when ordinal preferences are commonly known to be complementary, both efficiency and envy-freeness approach maximum levels. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - efficient & envy-free bargaining KW - Brams Taylor Adjusted Winner Mechanism KW - bilateral decisions KW - competing preferences KW - 2005 KW - Bargaining KW - Conflict Resolution KW - Decision Making KW - Game Theory KW - Preferences KW - 2005 DO - 10.1007/s10726-005-1245-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-09372-005&site=ehost-live&scope=site UR - james.parco@usafa.af.mil UR - terry.daniel@ualberta.ca DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-05102-015 AN - 2005-05102-015 AU - Woehr, David J. AU - Sheehan, M. Kathleen AU - Bennett, Winston Jr. T1 - Assessing Measurement Equivalence Across Rating Sources: A Multitrait-Multirater Approach. JF - Journal of Applied Psychology JO - Journal of Applied Psychology JA - J Appl Psychol Y1 - 2005/05// VL - 90 IS - 3 SP - 592 EP - 600 CY - US PB - American Psychological Association SN - 0021-9010 SN - 1939-1854 AD - Woehr, David J., Department of Management, University of Tennessee, 408 Stokely Management Center, Knoxville, TN, US, 37996 N1 - Accession Number: 2005-05102-015. PMID: 15910153 Partial author list: First Author & Affiliation: Woehr, David J.; Department of Management, University of Tennessee, Knoxville, TN, US. Release Date: 20050523. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Job Performance; Measurement; Personnel Evaluation; Rating. Classification: Personnel Evaluation & Job Performance (3630). Population: Human (10); Male (30). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 9. Issue Publication Date: May, 2005. Publication History: Accepted Date: Jan 9, 2004; Revised Date: Dec 17, 2003; First Submitted Date: Nov 18, 2002. Copyright Statement: American Psychological Association. 2005. AB - Research examining the structure of multisource performance ratings has demonstrated that ratings are a direct function of both who is doing the rating (rating source) as well as what is being rated (performance dimension). A separate line of research has focused on the extent to which performance ratings are equivalent across sources. To date no research has examined the measurement equivalence of multisource ratings within the context of both dimension and rating source direct effects on ratings. We examine the impact of both performance dimension and rating source as well as the degree of measurement equivalence across sources. Results indicate that (a) the impact of the underlying performance dimension is the same across rating sources, (b) the impact of rating source is substantial and only slightly smaller than the impact of the underlying performance dimension, and (c) the impact of rating source differs substantially depending on the source. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - multisource performance ratings KW - measurement equivalence KW - performance appraisal KW - self-other agreement KW - rating sources KW - 2005 KW - Job Performance KW - Measurement KW - Personnel Evaluation KW - Rating KW - 2005 DO - 10.1037/0021-9010.90.3.592 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-05102-015&site=ehost-live&scope=site UR - djw@utk.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Berne, Cécile AU - Allainmat, Bruno AU - Garcia, Daniel T1 - Tributyl phosphate degradation by Rhodopseudomonas palustris and other photosynthetic bacteria. JO - Biotechnology Letters JF - Biotechnology Letters Y1 - 2005/04/15/ VL - 27 IS - 8 M3 - Article SP - 561 EP - 566 SN - 01415492 AB - Tributyl phosphate (TBP) is widely used in nuclear fuel processing and other waste generating chemical industries. Although TBP is bacteriostatic, some microbes are resistant to it and may degrade it. Under dark aerobiosis, purple non-sulfur photosynthetic bacteria degraded up to 0.6 m M TBP, initially present at 2 m m, within 3 weeks and under photosynthetic conditions, Rhodopseudomonas palustris degraded 1.6 m M TBP within 3 weeks. The curing of the Rhodopseudomonas palustris endogenous plasmid demonstrated that the genes involved in the TBP degradation are chromosomal. [ABSTRACT FROM AUTHOR] AB - Copyright of Biotechnology Letters is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Phosphates KW - Radioactive substances KW - Petroleum chemicals industry KW - Nuclear fuels KW - Tributyl phosphate KW - Synthetic products KW - degradation KW - photosynthetic bacteria KW - Rhodopseudomonas palustris KW - tributyl phosphate KW - xenobiotic N1 - Accession Number: 17406521; Berne, Cécile 1; Allainmat, Bruno 2; Garcia, Daniel 2; Email Address: dgarcia@cea.fr; Affiliations: 1: Air Force Research laboratory, 139 Barnes Drive, Suite #2, Tyndall AFB, FL 32404-5323, USA; 2: Laboratoire de Bioénergétique Cellulaire, DSV-DEVM, Batiment 156, CEA Cadarache, F-13 108, Saint- Paul-lez-Durance Cedex, France.; Issue Info: Apr2005, Vol. 27 Issue 8, p561; Thesaurus Term: Phosphates; Thesaurus Term: Radioactive substances; Thesaurus Term: Petroleum chemicals industry; Thesaurus Term: Nuclear fuels; Subject Term: Tributyl phosphate; Subject Term: Synthetic products; Author-Supplied Keyword: degradation; Author-Supplied Keyword: photosynthetic bacteria; Author-Supplied Keyword: Rhodopseudomonas palustris; Author-Supplied Keyword: tributyl phosphate; Author-Supplied Keyword: xenobiotic; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 6p; Document Type: Article L3 - 10.1007/s10529-005-2882-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=17406521&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Filatyev, Sergei A. AU - Driscoll, James F. AU - Carter, Campbell D. AU - Donbar, Jeffrey M. T1 - Measured properties of turbulent premixed flames for model assessment, including burning velocities, stretch rates, and surface densities JO - Combustion & Flame JF - Combustion & Flame Y1 - 2005/04// VL - 141 IS - 1/2 M3 - Article SP - 1 EP - 21 SN - 00102180 AB - Abstract: Several previously unreported properties of turbulent premixed flames were measured because they are especially useful for the future assessment of direct numerical simulations and models. These new properties include local stretch rates, a wrinkling parameter, the degree of flamelet extinction, and the reaction layer thickness, which were quantified using simultaneous CH planar laser-induced fluorescence/particle image velocimetry (CH PLIF-PIV) diagnostics. Other reported properties that are useful for model assessment are flame surface density and global consumption speed, which is one type of turbulent burning velocity. Also measured was the Meneveau–Poinsot stretch efficiency function , which plays a central role in the coherent flamelet model. Some images of the flame–eddy interactions show how eddies exert strain and how flamelets “merge.” A highly wrinkled (corrugated) flame with well-defined boundary conditions was stabilized on a large two-dimensional slot Bunsen burner. It was found that the turbulent burning velocity of Bunsen flames depends on the mean velocity , which was varied independently of turbulence intensity. It is concluded that conventional relations for the turbulent burning velocity of Bunsen flames are inadequate because they should include two additional parameters: mean velocity and burner width W. These parameters affect the residence times of the flame–eddy interactions. A scaling analysis is presented to explain the observed trends. It indicates that if the burner width is sufficiently large, the long flame will experience significant flamelet merging, which is one factor leading to the “bending” (nonlinear behavior) of the burning velocity curve. Images of CH layers show that flame surface area is lost by flamelet merging, but is not lost due to local extinction, as no extinction was observed. The stretch efficiency function increases with increasing integral scale, indicating that large eddies are more efficient in exerting flame stretch than small eddies. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Speed KW - Turbulence KW - Lasers KW - Fluid dynamic measurements KW - Burning velocity KW - Premixed turbulent flames KW - Stretch N1 - Accession Number: 16836963; Filatyev, Sergei A. 1; Driscoll, James F. 1; Email Address: jamesfd@umich.edu; Carter, Campbell D. 2; Donbar, Jeffrey M. 2; Affiliations: 1: Department of Aerospace Engineering, University of Michigan, Ann Arbor, MI 48109, USA; 2: Air Force Research Laboratory AFRL/PRAS, Wright–Patterson AFB, OH 45433, USA; Issue Info: Apr2005, Vol. 141 Issue 1/2, p1; Subject Term: Speed; Subject Term: Turbulence; Subject Term: Lasers; Subject Term: Fluid dynamic measurements; Author-Supplied Keyword: Burning velocity; Author-Supplied Keyword: Premixed turbulent flames; Author-Supplied Keyword: Stretch; Number of Pages: 21p; Document Type: Article L3 - 10.1016/j.combustflame.2004.07.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=16836963&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Gordon, Steven J. AU - Dorn, Ronald I. T1 - In situ weathering rind erosion JO - Geomorphology JF - Geomorphology Y1 - 2005/04// VL - 67 IS - 1/2 M3 - Article SP - 97 EP - 113 SN - 0169555X AB - Abstract: The use of cosmogenic nuclide dating methods place in doubt the long-term future of weathering rinds (WRs) as a chronometric tool. Why estimate ages when radiometric control is possible? This paper presents evidence that WRs can provide invaluable clues about what particular sample would provide the most accurate cosmogenic age by avoiding “inheritance” of cosmogenic nuclides and by avoiding boulders undergoing spalling. The key to this new use requires testing the occurrence and nature of WR erosion. Back-scattered electron microscopy reveals that ignimbrite, andesite, basalt, and granitic clasts experience WR erosion in all subsurface and surface contexts thus far studied in Arizona, California, Hawaii, Oregon, and Washington. To understand the magnitude of WR erosion, we measured WR thicknesses, all while controlling the cosmogenic and surface stability ages of clasts by chlorine-36 and rock varnish microlamination dating methods. Our data reveal that traditional methodologies of sampling cobbles remove two-thirds of the true thickness of weathering rinds, calling into question many beliefs including the notion that clay minerals are not produced during weathering-rind formation. Comparisons of optical and electron microscope measurements support concerns that measurement of WRs by color changes, while useful as a pedagogical tool, creates serious biases in underestimating the true dynamics of WRs. In the end, we found that concordance of WR and rock coating “age trends” indicates the ideal boulder for cosmogenic nuclide dating. Offsets reveal either ongoing boulder erosion, invalidating “zero erosion” model ages, or a potential problem with “inheritance” of cosmogenic nuclides. [Copyright &y& Elsevier] AB - Copyright of Geomorphology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Erosion KW - Weathering KW - Electron microscopes KW - Nevada KW - Geomorphology KW - Glacial KW - Organ Pipe KW - Quaternary KW - Sierra Nevada N1 - Accession Number: 17637482; Gordon, Steven J. 1; Email Address: steve.gordon@usafa.af.mil; Dorn, Ronald I. 2; Email Address: ronald.dorn@asu.edu; Affiliations: 1: Department of Economics and Geography, United States Air Force Academy, 2354 Fairchild Drive, Colorado Springs, CO 80840-6299, USA; 2: Department of Geography, Box 870104, Arizona State University, Tempe, AZ 85287-0104, USA; Issue Info: Apr2005, Vol. 67 Issue 1/2, p97; Thesaurus Term: Erosion; Thesaurus Term: Weathering; Subject Term: Electron microscopes; Subject: Nevada; Author-Supplied Keyword: Geomorphology; Author-Supplied Keyword: Glacial; Author-Supplied Keyword: Organ Pipe; Author-Supplied Keyword: Quaternary; Author-Supplied Keyword: Sierra Nevada; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.geomorph.2004.06.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=17637482&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Griffiths, H. D. AU - Wicks, M. C. AU - Weiner, D. AU - Adve, R. AU - Antonik, P. A. AU - Fotinopoulos, I. T1 - Denial of bistatic hosting by spatial-temporal waveform design. JO - IEE Proceedings -- Radar, Sonar & Navigation JF - IEE Proceedings -- Radar, Sonar & Navigation Y1 - 2005/04// VL - 152 IS - 2 M3 - Article SP - 81 EP - 88 SN - 13502395 AB - A set of theoretical techniques to prevent a radar from being used by a bistatic radar receiver as a non-cooperative illuminator are analysed. This works by radiating in addition to the radar signal waveform, a `masking signal' waveform which is orthogonal to the radar signal waveform, both in the coding domain and the spatial domain. A number of different coding schemes are analysed. Two spatial coding methods are presented and analysed: the first uses a pair of interferometer elements at the extremities of the radar antenna array; the second uses a Butler matrix to generate a set of orthogonal beams. System-level calculations are presented to show the level of masking of the radar signal received by a bistatic radar receiver, and the suppression of the masking signal in the host radar echo. Some ideas for further work are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of IEE Proceedings -- Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO (Medium) KW - RADAR KW - DETECTORS KW - ELECTRONIC systems KW - RADAR -- Antennas KW - OPTICAL instruments N1 - Accession Number: 16783773; Griffiths, H. D. 1; Email Address: h.griffiths@ee.ucl.ac.uk; Wicks, M. C. 2; Weiner, D. 2; Adve, R. 3; Antonik, P. A. 2; Fotinopoulos, I. 4; Affiliations: 1: University College London, Department of Electronic and Electrical Engineering, Torrington Place, London WC1E 7JE, UK.; 2: Sensors Directorate, Air Force Research Laboratory, 26 Electronic Parkway, Rome, NY 13441- 4514, USA.; 3: University of Toronto, Dept. of Electric and Communication Engineering, Communications Group, Rm. GB 434, 35 St. George St., Toronto, Ontario M55 3G4, Canada.; 4: Imperial College of Science, Technology and Medicine, Department of Electrical and Electronic Engineering, Exhibition Road, London 5W7 2BT, UK.; Issue Info: Apr2005, Vol. 152 Issue 2, p81; Thesaurus Term: RADIO (Medium); Subject Term: RADAR; Subject Term: DETECTORS; Subject Term: ELECTRONIC systems; Subject Term: RADAR -- Antennas; Subject Term: OPTICAL instruments; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 446130 Optical Goods Stores; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 515111 Radio Networks; Number of Pages: 8p; Document Type: Article L3 - 10.1049/ip-rsn:20041236 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=16783773&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - NEWS AU - Chornoboy, Edward S. AU - Rangaswamy, Muralidhar AU - Lachapelle, Gérard T1 - From the Editors. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2005/04// VL - 41 IS - 2 M3 - Editorial SP - 385 EP - 385 SN - 00189251 AB - This article presents information about the recently appointed editorial staff of the journal "IEEE Transactions on Aerospace and Electronic Systems." Edward S. Chornoboy is Radar Systems Editor-in-Chief. He received the B.E. degree from Stevens Institute of Technology in 1977 and M.Sc. and Ph.D. degrees from the Johns Hopkins University in 1985 and 1987, respectively. From 1987 to 1988 he was with the Electronic Systems and Signals Research Laboratory at Washington University, Saint Louis, Missouri. From 1988 to present he has been a staff member at MIT Lincoln Laboratory and currently works there within the Air Defense Techniques Group, Air and Missile Defense Technology Division. Muralidhar Rangaswamy, Radar Systems Associate Editor. Rangaswamy received the Ph.D. degree in electrical engineering from Syracuse University, Syracuse in 1992. KW - EDITORS KW - JOURNALISTS KW - SAINT Louis (Mo.) KW - MISSOURI KW - WASHINGTON University (Saint Louis, Mo.) KW - CHORNOBOY, Edward S. KW - RANGASWAMY, Muralidhar N1 - Accession Number: 17521824; Chornoboy, Edward S.; Rangaswamy, Muralidhar 1; Lachapelle, Gérard; Affiliations: 1: Senior electronics engineer, Air Force Research Laboratory (AFRL), Hanscom AFB, MA.; Issue Info: Apr2005, Vol. 41 Issue 2, p385; Thesaurus Term: EDITORS; Thesaurus Term: JOURNALISTS; Subject: SAINT Louis (Mo.); Subject: MISSOURI ; Company/Entity: WASHINGTON University (Saint Louis, Mo.); NAICS/Industry Codes: 711510 Independent Artists, Writers, and Performers; NAICS/Industry Codes: 711512 Independent actors, comedians and performers; NAICS/Industry Codes: 711513 Independent writers and authors; People: CHORNOBOY, Edward S.; People: RANGASWAMY, Muralidhar; Number of Pages: 1p; Document Type: Editorial UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=17521824&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Yaghjian, Arthur D. AU - Best, Steven R. T1 - Impedance, Bandwidth, and Q of Antennas. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2005/04// Y1 - 2005/04// VL - 53 IS - 4 M3 - Article SP - 1298 EP - 1324 SN - 0018926X AB - To address the need for fundamental universally valid definitions of exact bandwidth and quality factor (Q) of tuned antennas, as well as the need for efficient accurate approximate formulas for computing this bandwidth and Q, exact and approximate expressions are found for the bandwidth and Q of a general single-feed (one-port) lossy or lossless linear antenna tuned to resonance or antiresonance. The approximate expression derived for the exact bandwidth of a tuned antenna differs from previous approximate expressions in that it is inversely proportional to the magnitude |Z'0 (&omega0) | of the frequency derivative of the input impedance and, for not too large a bandwidth, it is nearly equal to the exact bandwidth of the tuned antenna at every frequency &omega0, that is, throughout anti-resonant as well as resonant frequency bands. It is also shown that an appropriately defined exact Q of a tuned lossy or lossless antenna is approximately proportional to |Z'0 (&omega0) | and thus this Q is approximately inversely proportional to the bandwidth (for not too large a bandwidth) of a simply tuned antenna at all frequencies. The exact Q of a tuned antenna is defined in terms of average internal energies that emerge naturally from Maxwell's equations applied to the tuned antenna. These internal energies, which are similar but not identical to previously defined quality-factor energies, and the associated Q are proven to increase without bound as the size of an antenna is decreased. Numerical solutions to thin straight-wire and wire-loop lossy and lossless antennas, as well as to a Yagi antenna and a straight-wire antenna embedded in a lossy dispersive dielectric, confirm the accuracy of the approximate expressions and the inverse relationship between the defined bandwidth and the defined Q over frequency ranges that cover several resonant and antiresonant frequency bands. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DATA transmission systems KW - DIGITAL communications KW - BROADBAND communication systems KW - ANTENNAS (Electronics) KW - ELECTRONIC apparatus & appliances KW - ELECTRONICS N1 - Accession Number: 16753570; Source Information: Apr2005, Vol. 53 Issue 4, p1298; Subject Term: DATA transmission systems; Subject Term: DIGITAL communications; Subject Term: BROADBAND communication systems; Subject Term: ANTENNAS (Electronics); Subject Term: ELECTRONIC apparatus & appliances; Subject Term: ELECTRONICS; Subject Term: ; Number of Pages: 27p; ; Document Type: Article; L3 - 10.1109/TAP.2005.844443 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=16753570&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kasten, Donald G. AU - Liu, Xin AU - Sebo, Stephen A. AU - Grosjean, Dennis F. AU - Schweickart, Daniel L. T1 - Partial Discharge Measurements in Air and Argon at Low Pressures with and without a Dielectric Barrier. JO - IEEE Transactions on Dielectrics & Electrical Insulation JF - IEEE Transactions on Dielectrics & Electrical Insulation J1 - IEEE Transactions on Dielectrics & Electrical Insulation PY - 2005/04// Y1 - 2005/04// VL - 12 IS - 2 M3 - Article SP - 362 EP - 373 SN - 10709878 AB - Partial-discharge (PD) characteristics in air and argon under low pressures down to 133 Pa (0.1 Ton) and 60 Hz ac energization are studied in an energized needle-plane electrode arrangement. The electrode configuration, vacuum chamber, facilities, and electrical connections for the experimental setup are described. Two cases are studied for each of two gases, air and argon, with 20 mm spacing between the two electrodes: (1) with and (2) without a Teflon® cap (dielectric barrier). Results for the four series of experiments and analysis of the discharge current pulse waveforms are presented. Topics discussed are the typical waveforms of the discharge current pulses at different pressures, and discharge current pulse rise time vs. pressure relationships. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Dielectrics & Electrical Insulation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC discharges KW - AIR KW - ARGON KW - DIELECTRICS KW - EXCITON theory KW - ELECTRODES N1 - Accession Number: 16897252; Source Information: Apr2005, Vol. 12 Issue 2, p362; Subject Term: ELECTRIC discharges; Subject Term: AIR; Subject Term: ARGON; Subject Term: DIELECTRICS; Subject Term: EXCITON theory; Subject Term: ELECTRODES; Subject Term: ; Number of Pages: 12p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=16897252&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Solin, John R. AU - Tylka, Allan J. AU - Shea, Margaret A. AU - Smart, Don F. T1 - The Cosmic Ray Environment of Tactical ABMs. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2005/04// VL - 52 IS - 2 M3 - Article SP - 546 EP - 552 SN - 00189499 AB - Abstract-The battlespace of tactical antiballistic missiles (TABMs) is mostly exoatmospheric and includes regions with negligible geomagnetic shielding, especially during geomagnetic storms. It is therefore necessary to harden TABMs against galactic cosmic ray (GCR) and solar particle event (SPE) induced single event effects (SEEs) and star tracker and focal plane array (FPA) glitches. The variability of the worldwide GCR and SPE exoatmospheric TARM environment is described. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Cosmic rays KW - Antimissile missiles KW - Astrophysical radiation KW - Antiaircraft missiles KW - Nuclear physics KW - Space environment KW - Atmospheric neutrons KW - avionics single event upset (SEU) KW - SEU KW - single event effect KW - solar particle event N1 - Accession Number: 16843360; Solin, John R. 1; Email Address: john.solin@lmco.com; Tylka, Allan J. 2; Email Address: allan.tylka@nrl.navy.mil; Shea, Margaret A. 3; Email Address: sssrc@msn.com; Smart, Don F. 3; Affiliations: 1: Lockhead Martin Space Systems Co., San Jose, CA 95150-7871 USA.; 2: U.S. Naval Research Laboratory, Washington, DC 20375-5352 USA.; 3: U.S. Air Force Research Laboratory, Bedford, MA 01731-3010 USA.; Issue Info: Apr2005, Vol. 52 Issue 2, p546; Subject Term: Cosmic rays; Subject Term: Antimissile missiles; Subject Term: Astrophysical radiation; Subject Term: Antiaircraft missiles; Subject Term: Nuclear physics; Subject Term: Space environment; Author-Supplied Keyword: Atmospheric neutrons; Author-Supplied Keyword: avionics single event upset (SEU); Author-Supplied Keyword: SEU; Author-Supplied Keyword: single event effect; Author-Supplied Keyword: solar particle event; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TNS.2005.846883 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=16843360&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Brown, Michael S. AU - Forlines, Robert A. AU - Ganguly, Biswa N. T1 - Streamer Evolution in a Methane-Based Pulsed-dc Discharge. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2005/04//Apr2005 Part 1 of 3 Y1 - 2005/04//Apr2005 Part 1 of 3 VL - 33 IS - 2 M3 - Article SP - 256 EP - 257 SN - 00933813 AB - Time-resolved spectrally-filtered CH* emission images of streamer development in a pulsed-direct current (dc) discharge in a methane/nitrogen mixture were recorded as a function of delay from breakdown. Single-shot images reveal one or two streamers while images averaged over 100 shots show up to eight. The intensity distribution along the inter-gap axis reflects the rise and fall of the discharge current. The intensity distribution parallel to the electrode surfaces reflects lateral discharge growth. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PULSE circuits KW - PULSED laser deposition KW - DIRECT currents KW - MANURE gases KW - ELECTRODES KW - PLASMA dynamics N1 - Accession Number: 17939274; Source Information: Apr2005 Part 1 of 3, Vol. 33 Issue 2, p256; Subject Term: PULSE circuits; Subject Term: PULSED laser deposition; Subject Term: DIRECT currents; Subject Term: MANURE gases; Subject Term: ELECTRODES; Subject Term: PLASMA dynamics; Subject Term: ; Number of Pages: 2p; ; Document Type: Article; L3 - 10.1109/TPS.2005.845116 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=17939274&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Bletzinger, P. AU - Ganguly, B. N. AU - Garscadden, A. T1 - Effect of Shock Wave Propagation on Plasma Emission in a Low Pressure N2 Discharge. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science J1 - IEEE Transactions on Plasma Science PY - 2005/04//Apr2005 Part 1 of 3 Y1 - 2005/04//Apr2005 Part 1 of 3 VL - 33 IS - 2 M3 - Article SP - 342 EP - 343 SN - 00933813 AB - The interaction between Mach 1.7 acoustic shock waves with 5 torr, 2.5 mA/cm² current density glow discharges in nitrogen was quantified from current-voltage behavior and time resolved two-dimensional C-B plasma emission. These measurements are consistent with the formation of localized electric double layer sheaths traveling with the propagating shock wave. This space-charge layer provides local enhanced ionization at the shock front which permits maintenance of the discharge current continuity, at least during the short shock propagation time, when the decrease in E/N, (E-electric field and N-gas density) behind the shock produces a dark discharge spanning the entire 30-cm column length. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHOCK waves KW - SOUND pressure KW - PLASMA waves KW - ELECTRIC discharges through gases KW - ELECTRIC fields KW - ELECTRIC double layer N1 - Accession Number: 17939317; Source Information: Apr2005 Part 1 of 3, Vol. 33 Issue 2, p342; Subject Term: SHOCK waves; Subject Term: SOUND pressure; Subject Term: PLASMA waves; Subject Term: ELECTRIC discharges through gases; Subject Term: ELECTRIC fields; Subject Term: ELECTRIC double layer; Subject Term: ; Number of Pages: 2p; ; Document Type: Article; L3 - 10.1109/TPS.2005.844992 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=17939317&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Mrozek, Donald J. AU - Vandervort, Bruce T1 - Afterburner: Naval Aviators and the Vietnam War. JO - Journal of Military History JF - Journal of Military History J1 - Journal of Military History PY - 2005/04// Y1 - 2005/04// VL - 69 IS - 2 M3 - Book Review SP - 605 EP - 606 SN - 08993718 AB - Reviews the book "Afterburner: Naval Aviators and the Vietnam War," by John Darrell Sherwood. KW - AFTERBURNER: Naval Aviators & the Vietnam War (Book) KW - SHERWOOD, John Darrell KW - VIETNAM War, 1961-1975 KW - NONFICTION N1 - Accession Number: 16552904; Source Information: Apr2005, Vol. 69 Issue 2, p605; Subject Term: AFTERBURNER: Naval Aviators & the Vietnam War (Book); Subject Term: SHERWOOD, John Darrell; Subject Term: VIETNAM War, 1961-1975; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=16552904&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Pavuk, Marian AU - Michalek, Joel E. AU - Schecter, Arnold AU - Ketchum, Norma S. AU - Akhtar, Fatema Z. AU - Fox, Karen A. T1 - Did TCDD Exposure or Service in Southeast Asia Increase the Risk of Cancer in Air Force Vietnam Veterans Who Did Not Spray Agent Orange? JO - Journal of Occupational & Environmental Medicine JF - Journal of Occupational & Environmental Medicine Y1 - 2005/04// VL - 47 IS - 4 M3 - Article SP - 335 EP - 342 SN - 10762752 AB - Objective: We sought to examine cancer incidence in 1482 Air Force veterans who served in Southeast Asia (SEA) and who were not occupationally exposed to herbicides. Methods: Cancer incidence between 1982 and 2003 was determined by record review and Cox proportional hazards models were used to estimate risk ratios across serum 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and years served in SEA categories. Results: All sites cancer risk increased with TCDD (relative risk = 1.6, 95% confidence interval = 1.2–2.2). The risk of prostate cancer increased with years of SEA service but not with TCDD. TCDD and years of SEA service interacted with all sites cancer; the risk was greatest in those with the highest TCDD levels and the longest time served in SEA. Conclusions: These results suggest nonoccupational exposures to TCDD or other factors while in SEA may contribute to cancer risk in these veterans. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Occupational & Environmental Medicine is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Tetrachlorodibenzodioxin KW - Agent Orange KW - DISEASES KW - Diseases KW - Veterans KW - Prostate cancer KW - Cancer KW - RISK factors N1 - Accession Number: 17052203; Pavuk, Marian 1; Michalek, Joel E. 2; Email Address: joel.michalek@brooks.af.mil.; Schecter, Arnold 3; Ketchum, Norma S. 2; Akhtar, Fatema Z. 4; Fox, Karen A. 5; Affiliations: 1: SpecPro, Inc., San Antonio, Texas; 2: Air Force Research Laboratory, Brooks City-Base, Texas; 3: University of Texas School of Public Health, Dallas; 4: The START Center, San Antonio, Texas; 5: US Air Force School of Aerospace Medicine, Brooks City-Base, Texas; Issue Info: Apr2005, Vol. 47 Issue 4, p335; Thesaurus Term: Tetrachlorodibenzodioxin; Thesaurus Term: Agent Orange; Thesaurus Term: DISEASES; Thesaurus Term: Diseases; Subject Term: Veterans; Subject Term: Prostate cancer; Subject Term: Cancer; Subject Term: RISK factors; NAICS/Industry Codes: 923140 Administration of Veterans' Affairs; Number of Pages: 8p; Document Type: Article L3 - 10.1097/01.jom.0000158739.56427.24 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=17052203&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 106636179 T1 - Core stability: assessment and functional strengthening of the hip abductors. AU - Wilson E Y1 - 2005/04// N1 - Accession Number: 106636179. Language: English. Entry Date: 20050527. Revision Date: 20150818. Publication Type: Journal Article; pictorial; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Muscle Strengthening KW - Muscle Strength -- Evaluation KW - Hip KW - Abduction KW - Biomechanics KW - Buttocks KW - Exercise Test, Muscular KW - Therapeutic Exercise KW - Exercise Physiology SP - 21 EP - 23 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 27 IS - 2 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. AB - This column provides a basic overview of the biomechanics of the gluteus medius muscle, an assessment method for trainers, and an exercise prescription. SN - 1524-1602 AD - Director, Cadet Physical Therapy Clinic, United States Air Force Academy, Colorado UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106636179&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Core Stability: Assessment and Functional Strengthening of the Hip Abductors. AU - Wilson, Eric AU - Tyson, Alan JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) Y1 - 2005/04// VL - 27 IS - 2 SP - 21 EP - 23 SN - 15241602 N1 - Accession Number: 16779054; Author: Wilson, Eric: 1 Author: Tyson, Alan ; Author Affiliation: 1 Director, Cadet Physical Therapy Clinic United States Air Force Academy, Colorado; No. of Pages: 3; Language: English; Publication Type: Article; Update Code: 20050420 N2 - This column provides a basic overview of the biomechanics of the gluteus medius muscle, an assessment method for trainers, and an exercise prescription. ABSTRACT FROM AUTHOR KW - *MUSCLES KW - *PHYSICAL fitness KW - *MUSCLE strength KW - *PERSONAL trainers KW - *PELVIS UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=16779054&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 106636213 T1 - College coaches corner. Learning from each other: summer programs. AU - Hedrick A AU - Bennett S AU - Wiley S AU - Rogers R Y1 - 2005/04// N1 - Accession Number: 106636213. Language: English. Entry Date: 20050527. Revision Date: 20150711. Publication Type: Journal Article; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletic Training -- Methods KW - Muscle Strengthening -- Methods KW - Athletes, College SP - 75 EP - 77 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 27 IS - 2 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. AB - Summer strength and conditioning activities are critical for collegiate athletes, especially for those athletes that compete during the fall semester and need to be at a peak level of performance early in the school year. We asked our panel of coaches how they handled the supervision and monitoring of their athletes' training during the summer. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO; ARHedrick@Adelphia.net UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106636213&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Learning From Each Other: Summer Programs. AU - Hedrick, Allen JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) Y1 - 2005/04// VL - 27 IS - 2 SP - 75 EP - 77 SN - 15241602 N1 - Accession Number: 16779334; Author: Hedrick, Allen: 1 email: ARHedrick@Adelphia.net. ; Author Affiliation: 1 United States Air Force Academy, Colorado Springs, Colorado; No. of Pages: 3; Language: English; Publication Type: Article; Update Code: 20050420 N2 - Summer strength and conditioning activities are critical for collegiate athletes, especially for those athletes that compete during the fall semester and need to be at a peak level of performance early in the school year. We asked our panel of coaches how they handled the supervision and monitoring of their athletes' training during the summer. ABSTRACT FROM AUTHOR KW - *COLLEGE athletes KW - *COLLEGE sports KW - *ATHLETES KW - *COACHES (Athletics) KW - *PHYSICAL education UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=16779334&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Ehrenreich, T. AU - Zhdanov, B. AU - Takekoshi, T. AU - Phipps, S.P. AU - Knize, R.J. T1 - Diode pumped caesium laser. JO - Electronics Letters JF - Electronics Letters Y1 - 2005/03/31/ VL - 41 IS - 7 M3 - Article SP - 415 EP - 416 SN - 00135194 AB - A continuous-wave caesium vapour laser with diode laser pumping is demonstrated. An output power of more than 130 mW was achieved using a 400 mW pump giving an overall optical efficiency better than 32%. it is expected to increase the laser efficiency with improvement to the experimental setup. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL vapor lasers KW - LASERS KW - OPTOELECTRONIC devices KW - GAS lasers KW - LIGHT amplifiers N1 - Accession Number: 16616346; Ehrenreich, T. 1; Email Address: thomas.ehrenreich@usafa.ar.mil; Zhdanov, B. 1; Takekoshi, T. 1; Phipps, S.P. 1; Knize, R.J. 1; Affiliations: 1: Department of Physics, United States Air Force Academy, CO 80840, USA; Issue Info: 3/31/2005, Vol. 41 Issue 7, p415; Subject Term: METAL vapor lasers; Subject Term: LASERS; Subject Term: OPTOELECTRONIC devices; Subject Term: GAS lasers; Subject Term: LIGHT amplifiers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 2p; Document Type: Article L3 - 10.1049/eI:20058388 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=16616346&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - NEWS AU - Adler, Eric D. AU - Calcatera, Mark C. AU - Luy, Johann-Friedrich AU - Palmer, W. Devereux AU - Purdy, Daniel S. T1 - Guest Editorial. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques J1 - IEEE Transactions on Microwave Theory & Techniques PY - 2005/03/15/Mar2005 Part 2 of 2 Y1 - 2005/03/15/Mar2005 Part 2 of 2 VL - 53 IS - 3 M3 - Editorial SP - 1005 EP - 1008 SN - 00189480 AB - Presents an introduction to the articles related to multifunctional radio frequency systems published in the March 2005 edition of the journal "Transactions." KW - TRANSACTIONS (Periodical) KW - RADIO frequency N1 - Accession Number: 16470062; Source Information: Mar2005 Part 2 of 2, Vol. 53 Issue 3, p1005; Subject Term: TRANSACTIONS (Periodical); Subject Term: RADIO frequency; Subject Term: ; Number of Pages: 4p; ; Document Type: Editorial; L3 - 10.1109/TMTT.2005.843470 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=16470062&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Parker, D. R. AU - Gustafson, S. C. AU - Ross, T. D. T1 - Bayesian confidence intervals for ROC curves. JO - Electronics Letters JF - Electronics Letters Y1 - 2005/03/03/ VL - 41 IS - 5 M3 - Article SP - 279 EP - 280 SN - 00135194 AB - This article discusses Bayesian confidence intervals for ROC curves. The receiver operating characteristic (ROC) curve is an established means to quantify detection system performance, as in systems that predict disease likelihood and in systems that predict the probability that a radar image contains a target. Various methods for obtaining ROC confidence intervals have been proposed but they typically employ limiting assumptions, such as that the underlying distributions are normal either directly or after a monotonic transformation. KW - STATISTICAL hypothesis testing KW - PROBABILITY theory KW - BAYESIAN analysis KW - SAMPLING (Statistics) KW - ELECTRONIC systems KW - DETECTORS N1 - Accession Number: 16332008; Parker, D. R. 1; Email Address: david.parker@afit.edu; Gustafson, S. C. 1; Ross, T. D. 2; Affiliations: 1: Department of Electrical Engineering and Computer Science, Air Force Institute of Technology, Wright, Patterson AFB, OH, USA.; 2: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH, USA.; Issue Info: 3/3/2005, Vol. 41 Issue 5, p279; Thesaurus Term: STATISTICAL hypothesis testing; Thesaurus Term: PROBABILITY theory; Thesaurus Term: BAYESIAN analysis; Thesaurus Term: SAMPLING (Statistics); Subject Term: ELECTRONIC systems; Subject Term: DETECTORS; NAICS/Industry Codes: 541910 Marketing Research and Public Opinion Polling; Number of Pages: 2p; Document Type: Article L3 - 10.1049/el:20047523 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=16332008&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Best, Steven R. T1 - Low Q Electrically Small Linear and Elliptical Polarized Spherical Dipole Antennas. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2005/03// Y1 - 2005/03// VL - 53 IS - 3 M3 - Article SP - 1047 EP - 1053 SN - 0018926X AB - Electrically small antennas are generally presumed to exhibit high impedance mismatch (high VSWR), low efficiency, high quality factor (Q); and, therefore, narrow operating band- width. For an electric or magnetic dipole antenna, there is a fundamental lower bound for the quality factor that is determined as a function of the antenna's occupied physical volume. In this paper, the quality factor of a resonant, electrically small electric dipole is minimized by allowing the antenna geometry to utilize the occupied spherical volume to the greatest extent possible. A self-resonant, electrically small electric dipole antenna is presented that exhibits an impedance near 50 Ohms, an efficiency in excess of 95 % and a quality factor that is within 1.5 times the fundamental lower bound at a value of κα less than 0.27. Through an arrangement of the antenna's wire geometry, the electrically small dipole's polarization is converted from linear to elliptical (with an axial ratio of 3 dB), resulting in a further reduction in the quality factor. The elliptically polarized, electrically small antenna exhibits an impedance near 50 Ohms, an efficiency in excess of 95% and it has an omnidirectional, figure-eight radiation pattern. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIPOLE antennas KW - ANTENNAS (Electronics) KW - ELECTRONIC apparatus & appliances KW - MAGNETIC dipoles KW - DIPOLE moments KW - ELECTRIC impedance N1 - Accession Number: 16403873; Source Information: Mar2005, Vol. 53 Issue 3, p1047; Subject Term: DIPOLE antennas; Subject Term: ANTENNAS (Electronics); Subject Term: ELECTRONIC apparatus & appliances; Subject Term: MAGNETIC dipoles; Subject Term: DIPOLE moments; Subject Term: ELECTRIC impedance; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TAP.2004.842600 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=16403873&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Eismann, Michael T. AU - Hardie, Russell C. T1 - Hyperspectral Resolution Enhancement Using High-Resolution Multispectral Imagery With Arbitrary Response Functions. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2005/03// VL - 43 IS - 3 M3 - Article SP - 455 EP - 465 SN - 01962892 AB - A maximum a posteriori (MAP) estimation method for improving the spatial resolution of a hyperspectral image using a higher resolution auxiliary image is extended to address several practical remote sensing situations. These include cases where: 1) the spectral response of the auxiliary image is unknown and does not match that of the hyperspectral image; 2) the auxiliary image is multispectral; and 3) the spatial point spread function for the hyperspectral sensor is arbitrary and extends beyond the span of the detector elements. The research presented follows a previously reported MAP approach that makes use of a stochastic mixing model (SMM) of the underlying spectral scene content to achieve resolution enhancement beyond the intensity component of the hyperspectral image. The mathematical formulation of a generalized form of the MAP/SMM estimate is described, and the enhancement algorithm is demonstrated using various image datasets. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DATA analysis KW - REMOTE-sensing images KW - FREE-space optical technology KW - RESOLUTION (Optics) KW - IMAGING systems KW - DETECTORS N1 - Accession Number: 16275033; Eismann, Michael T. 1; Email Address: michael.eismann@wpatb.af.mil; Hardie, Russell C. 2; Email Address: rhardie@udayton.edu; Affiliations: 1: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7700 USA.; 2: Department of Electrical and Computer Engineering, University of Dayton, Dayton, OH 45459-0226 USA.; Issue Info: Mar2005, Vol. 43 Issue 3, p455; Thesaurus Term: DATA analysis; Subject Term: REMOTE-sensing images; Subject Term: FREE-space optical technology; Subject Term: RESOLUTION (Optics); Subject Term: IMAGING systems; Subject Term: DETECTORS; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TGRS.2004.837324 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=16275033&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Hansen, Frederick D. AU - Pitts, Donald T1 - SYSTEM SAFETY IN EARLY MANNED SPACE PROGRAM: A CASE STUDY OF NASA AND PROJECT MERCURY. JO - Journal of Air Transportation JF - Journal of Air Transportation Y1 - 2005/03// VL - 10 IS - 1 M3 - Article SP - 104 EP - 128 PB - University of Nebraska at Omaha SN - 15446980 AB - This case study provides a review of National Aeronautics and Space Administration's (NASA's) involvement in system safety during research and evolution from air breathing to exo-atmospheric capable flight systems culminating in the successful Project Mercury. Although NASA has been philosophically committed to the principals of system safety, this case study points out that budget and manpower constraints--as well as a variety of internal and external pressures--can jeopardize even a well-designed system safety program. This study begins with a review of the evolution and early years of NASA's rise as a project lead agency and ends with the lessons learned from Project Mercury. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Air Transportation is the property of University of Nebraska at Omaha and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERONAUTICS -- Safety measures KW - LABOR supply KW - AERONAUTICS -- United States KW - UNITED States KW - UNITED States. National Aeronautics & Space Administration KW - PROJECT Mercury (U.S.) N1 - Accession Number: 17265515; Hansen, Frederick D. 1; Pitts, Donald 2; Affiliations: 1: Oklahoma State University Tulsa, Oklahoma; 2: United States Air Force Reserves; Issue Info: 2005, Vol. 10 Issue 1, p104; Thesaurus Term: AERONAUTICS -- Safety measures; Thesaurus Term: LABOR supply; Subject Term: AERONAUTICS -- United States; Subject: UNITED States ; Company/Entity: UNITED States. National Aeronautics & Space Administration ; Company/Entity: PROJECT Mercury (U.S.); NAICS/Industry Codes: 561320 Temporary Help Services; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 25p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=17265515&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Millman, D. R. AU - King, P. I. AU - Beran, P. S. T1 - Airfoil Pitch-and-Plunge Bifurcation Behavior with Fourier Chaos Expansions. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2005/03//Mar/Apr2005 Y1 - 2005/03//Mar/Apr2005 VL - 42 IS - 2 M3 - Article SP - 376 EP - 384 SN - 00218669 AB - A stochastic projection method is employed to obtain the probability distribution of pitch angle of an airfoil in pitch and plunge subject to probabilistic uncertainty in both the initial pitch angle and the cubic spring coefficient of the restoring pitch force. Historically, the selected basis for the stochastic projection method has been orthogonal polynomials, referred to as the polynomial chaos. Such polynomials, however, result in unacceptable computational expense for applications involving oscillatory motion, and a new basis, the Fourier chaos, is introduced for computing limit-cycle oscillations. Unlike the polynomial chaos expansions, which cannot predict limit-cycle oscillations, the Fourier chaos expansions predict both subcritical and supercritical responses even with low-order expansions and high-order nonlinearities. Bifurcation diagrams generated with this new approximate method compare well to Monte Carlo simulations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROFOILS KW - STOCHASTIC analysis KW - STOCHASTIC approximation KW - AIRPLANES -- Control surfaces KW - MODEL airplanes -- Wings KW - PROBABILITY theory N1 - Accession Number: 16848434; Source Information: Mar/Apr2005, Vol. 42 Issue 2, p376; Subject Term: AEROFOILS; Subject Term: STOCHASTIC analysis; Subject Term: STOCHASTIC approximation; Subject Term: AIRPLANES -- Control surfaces; Subject Term: MODEL airplanes -- Wings; Subject Term: PROBABILITY theory; Subject Term: ; Number of Pages: 9p; ; Illustrations: 2 Diagrams, 2 Charts, 9 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=16848434&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Lucia, David J. AU - Beran, Philip S. AU - Silva, Walter A. T1 - Aeroelastic System Development Using Proper Orthogonal Decomposition and Volterra Theory. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2005/03//Mar/Apr2005 Y1 - 2005/03//Mar/Apr2005 VL - 42 IS - 2 M3 - Article SP - 509 EP - 518 SN - 00218669 AB - Volterra theory and proper orthogonal decomposition are combined into a hybrid methodology for reduced-order modeling of aeroelastic systems. The outcome of the method is a set of linear ordinary differential equations describing the modal amplitudes associated with both the structural modes and the proper orthogonal decomposition basis functions for the fluid. The structural modes are sine waves of varying frequency, and the new approach is applied to the fluid dynamics equations. The structural modes are treated as forcing terms that are impulsed as part of the fluid model realization. By the use of this approach, structural and fluid operators are coupled into a single aeroelastic operator while the parameter (or parameters) of interest for sensitivity analysis are preserved. The approach is applied to an elastic panel in supersonic crossflow. The resulting aeroelastic model provides correct limit-cycle oscillation prediction over a wide range of panel dynamic pressure values. Time integration of the reduced-order aeroelastic model is four orders of magnitude faster than the high-order solution procedure developed by the use of traditional fluid and structural solvers. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VOLTERRA equations KW - FLUID dynamics KW - AERODYNAMICS KW - DECOMPOSITION method (Mathematics) KW - SYSTEM analysis N1 - Accession Number: 16848450; Source Information: Mar/Apr2005, Vol. 42 Issue 2, p509; Subject Term: VOLTERRA equations; Subject Term: FLUID dynamics; Subject Term: AERODYNAMICS; Subject Term: DECOMPOSITION method (Mathematics); Subject Term: SYSTEM analysis; Subject Term: ; Number of Pages: 10p; ; Illustrations: 1 Diagram, 1 Chart, 6 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=16848450&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Heminger, Alan R. AU - Kelley, Don M. T1 - Assessing the Digital Rosetta Stone Model for Long-Term Access to Digital Documents. JO - Journal of Management Information Systems JF - Journal of Management Information Systems Y1 - 2005///Spring2005 VL - 21 IS - 4 M3 - Article SP - 11 EP - 35 PB - Taylor & Francis Ltd SN - 07421222 AB - Information that is stored digitally is at risk for being irretrievably lost if either the methods used to retrieve the bitstream or the methods used to interpret the bitstream are lost. The Digital Rosetta Stone (DRS) model was developed as a conceptual framework for capturing and maintaining the methods necessary to retrieve digital information stored on obsolete media and to properly interpret it, though the software used to create it may also be obsolete. However, the community of those professionals concerned with this issue had not yet assessed this conceptual model. This study used the Delphi method to explore these issues with those responsible for maintaining access to digital data. Overall, the Delphi group expressed concerns about the practicality of developing the DRS, but agreed that it is an important concept that should be explored further. If found to be technologically feasible and economically desirable, the DRS could well lead to a long-term solution for recovering information that would otherwise be impossible to recover. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Management Information Systems is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC records KW - DELPHI method KW - INNOVATION adoption KW - FEASIBILITY studies KW - INFORMATION storage & retrieval systems KW - TECHNOLOGICAL obsolescence KW - QUESTIONNAIRES KW - RECORDS management KW - TECHNOLOGY assessment KW - DIGITAL technology KW - ARCHITECTURE KW - DIGITAL divide KW - access to digital documents KW - digital storage KW - permanence of stored information KW - technological obsolescence N1 - Accession Number: 16734161; Heminger, Alan R. 1; Kelley, Don M. 2; Affiliations: 1: Associate Professor, Information Resource Management, Air Force Institute of Technology (AFIT); 2: Duty officer, United States Air Force; Issue Info: Spring2005, Vol. 21 Issue 4, p11; Thesaurus Term: ELECTRONIC records; Thesaurus Term: DELPHI method; Thesaurus Term: INNOVATION adoption; Thesaurus Term: FEASIBILITY studies; Thesaurus Term: INFORMATION storage & retrieval systems; Thesaurus Term: TECHNOLOGICAL obsolescence; Thesaurus Term: QUESTIONNAIRES; Thesaurus Term: RECORDS management; Subject Term: TECHNOLOGY assessment; Subject Term: DIGITAL technology; Subject Term: ARCHITECTURE; Subject Term: DIGITAL divide; Author-Supplied Keyword: access to digital documents; Author-Supplied Keyword: digital storage; Author-Supplied Keyword: permanence of stored information; Author-Supplied Keyword: technological obsolescence; NAICS/Industry Codes: 561490 Other business support services; Number of Pages: 25p; Illustrations: 1 Diagram, 1 Chart; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=16734161&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Kingman, Albert AU - Albers, James W. AU - Arezzo, Joseph C. AU - Garabrant, David H. AU - Michalek, Joel E. T1 - Amalgam Exposure And Neurological Function JO - NeuroToxicology JF - NeuroToxicology Y1 - 2005/03// VL - 26 IS - 2 M3 - Article SP - 241 EP - 255 SN - 0161813X AB - Abstract: Concerns regarding the safety of silver–mercury amalgam fillings continue to be raised in the absence of any direct evidence of harm. The widespread population exposure to amalgam mandated that a thorough investigation be conducted of its potential effects on the nervous system. The National Institute of Dental and Craniofacial Research and U.S. Air Force investigators collaborated in the ongoing Air Force Health Study (AFHS) of Vietnam era veterans. The primary study question involved adverse health effects associated with exposure to herbicides or dioxin. An assessment of exposure to dental amalgam fillings was added to the 1997–1998 health examination to investigate possible associations between amalgam exposure and neurological abnormalities. Our study population consisted of 1663 dentate AFHS participants, comprised of 986 AFHS controls and 677 Ranch Hand veterans who were exposed to dioxin in Vietnam. Two hundred and fifty-two of the participants had confirmed diabetes mellitus. Study outcomes included clinical neurological signs, vibrotactile thresholds, and summary variables for different levels of peripheral neuropathy. A limitation of our study is that our database did not include more sensitive continuous measures such as nerve conduction studies. No significant associations were found between amalgam exposure and clinical neurological signs of abnormal tremor, coordination, station or gait, strength, sensation, or muscle stretch reflexes or for any level of peripheral neuropathy among our study participants. A statistically significant association was detected between amalgam exposure and the continuous vibrotactile sensation response for the combined non-diabetic participants and separately for non-diabetic AFHS controls. No significant association in this measure was detectable for non-diabetic Ranch Hand veterans or among the combined diabetic participants. The association is a sub-clinical finding that was not associated with symptoms, clinically evident signs of neuropathy, or any functional impairment. Overall, we found no association between amalgam exposure and neurological signs or clinically evident peripheral neuropathy. Our findings do not support the hypothesis that exposure to amalgam produces adverse, clinically evident neurological effects. [Copyright &y& Elsevier] AB - Copyright of NeuroToxicology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Amalgams (Alloys) KW - Mercury KW - Liquid metals KW - Herbicides KW - Dioxins KW - Associations, institutions, etc. KW - Amalgam exposure KW - Epidemiology KW - Neurological signs KW - Peripheral neuropathy N1 - Accession Number: 16392580; Kingman, Albert 1; Email Address: Albert.Kingman@nih.gov; Albers, James W. 2; Arezzo, Joseph C. 3; Garabrant, David H. 4; Michalek, Joel E. 5; Affiliations: 1: Division of Clinical Research and Health Promotion, National Institute of Dental and Craniofacial Research, National Institutes of Health, 45 Center Drive, Room 4As-25U, Bethesda, MD 20892-6401, USA; 2: Department of Neurology, University of Michigan Medical School, Ann Arbor, MI, USA; 3: Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA; 4: Departments of Environmental Health Sciences and Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA; 5: Air Force Research Laboratory, San Antonio, TX, USA; Issue Info: Mar2005, Vol. 26 Issue 2, p241; Thesaurus Term: Amalgams (Alloys); Thesaurus Term: Mercury; Thesaurus Term: Liquid metals; Thesaurus Term: Herbicides; Thesaurus Term: Dioxins; Subject Term: Associations, institutions, etc.; Author-Supplied Keyword: Amalgam exposure; Author-Supplied Keyword: Epidemiology; Author-Supplied Keyword: Neurological signs; Author-Supplied Keyword: Peripheral neuropathy; NAICS/Industry Codes: 813990 Other Similar Organizations (except Business, Professional, Labor, and Political Organizations); NAICS/Industry Codes: 418390 Agricultural chemical and other farm supplies merchant wholesalers; NAICS/Industry Codes: 325320 Pesticide and Other Agricultural Chemical Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.neuro.2004.09.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=16392580&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2005-06699-003 AN - 2005-06699-003 AU - Roblyer, Dwight A. T1 - Beyond Precision: Morality, Decision Making, and Collateral Casualties. T3 - Military Ethics and Peace Psychology: A Dialogue JF - Peace and Conflict: Journal of Peace Psychology JO - Peace and Conflict: Journal of Peace Psychology JA - Peace Confl Y1 - 2005/03// VL - 11 IS - 1 SP - 17 EP - 39 CY - US PB - Lawrence Erlbaum SN - 1078-1919 SN - 1532-7949 AD - Roblyer, Dwight A., 2522 Sierra Drive, Colorado Springs, CO, US, 80917 N1 - Accession Number: 2005-06699-003. Partial author list: First Author & Affiliation: Roblyer, Dwight A.; United States Air Force, Program in Arms Control, Disarmament, and International Security, University of Illinois, Urbana-Champaign, IL, US. Other Publishers: Educational Publishing Foundation; Taylor & Francis. Release Date: 20050711. Correction Date: 20120102. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Decision Making; Ethics; Military Personnel; Technology; War. Minor Descriptor: Death and Dying; Morality. Classification: Military Psychology (3800). Population: Human (10). References Available: Y. Page Count: 23. Issue Publication Date: Mar, 2005. AB - Although the military and the media have focused repeatedly on the technological advances in the precision of attacks from the air, the moral aspects of the military's procedures to minimize civilian deaths resulting from attacks from the air is examined in this article. The intention is to examine the institutional settings within which individuals make very difficult decisions under very difficult conditions and to offer recommendations. The international law of warfare is very clear that civilian persons who are not actively aiding the enemy military forces must not be the target, of any attack. When such persons are purposefully harmed, these acts are declared war crimes. The excellent hardware, software, and procedures available today provide options in the targeting process that were not available previously. Yet the improvements have not altered the fact that, ultimately, U.S. military members are charged with the responsibility of advising and deciding rightly concerning the risk of collateral casualties and damage. The recommendations resulting from this discussion would not be easy or inexpensive to implement. However, the moral force of the national values and military ethic of the United States, the international law of war and the lives of innocent civilians-wherever and whenever war is waged-all call for the careful consideration of these insights and proposals. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - collateral casualties KW - international law KW - military ethics KW - morality KW - decision making KW - technological advances KW - air attacks KW - civilian deaths KW - 2005 KW - Decision Making KW - Ethics KW - Military Personnel KW - Technology KW - War KW - Death and Dying KW - Morality KW - 2005 DO - 10.1207/s15327949pac1101_3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-06699-003&site=ehost-live&scope=site UR - Dwight.Roblyer@PETERSON.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2007-09344-003 AN - 2007-09344-003 AU - Katayama, Andrew AU - Rodriguez, AnaGloria AU - Brumley, Kara AU - Warash, Barbara T1 - Preschoolers' judgments of object quantity under the influence of color. JF - Research in the Schools JO - Research in the Schools JA - Res Sch Y1 - 2005///Spr 2005 VL - 12 IS - 1 SP - 32 EP - 40 CY - US PB - Mid South Educational Research Assn SN - 1085-5300 AD - Katayama, Andrew, United States Air Force Academy, HQ USAFA/DFBL, 2354 Fairchild Drive, Suite 6L101B, CO, US, 80840-6228 N1 - Accession Number: 2007-09344-003. Partial author list: First Author & Affiliation: Katayama, Andrew; United States Air Force Academy, CO, US. Release Date: 20080121. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Color Perception; Judgment; Preschool Students; Student Attitudes. Classification: Academic Learning & Achievement (3550); Cognitive & Perceptual Development (2820). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Childhood (birth-12 yrs) (100); Preschool Age (2-5 yrs) (160). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 9. Issue Publication Date: Spr 2005. AB - In two separate studies we investigated the influence of color on the perception of quantity among 3 to 5 year-old children. Quantity tasks consisting of basic shapes and colors were presented to children at 3 different preschools to see if color influenced their perception of quantity. Results of the first study indicated that younger children are more likely to commit the error that color corresponds to 'more' quantity. The results from the second study confirm the results from the original study that color is equivalent to more. However, when the question of 'less' quantity was asked, there was no difference in perception of quantity. Results also displayed a difference of error committed with increasing age. It is concluded that color influence over the perception of quantity decreases with an increase in age. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - preschoolers judgment KW - object quantity KW - color influence KW - 2005 KW - Color Perception KW - Judgment KW - Preschool Students KW - Student Attitudes KW - 2005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2007-09344-003&site=ehost-live&scope=site UR - andrew.katayama@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-06030-004 AN - 2005-06030-004 AU - Coleman, Peter T. AU - Schneider, Adam AU - Adams, Douglass S. AU - Everett, Catherine James AU - Gameros, Timothy A. AU - Hammons, Lee R. AU - Orji, Cecil C. AU - Waugh, Ralph M. AU - Wicker, Richard F. III T1 - Intragroup subgroup attitude clustering, external intervention, and intergroup interaction patterns: Toward a dynamical model of protracted intergroup conflict. JF - Peace and Conflict Studies JO - Peace and Conflict Studies Y1 - 2005///Spr 2005 VL - 12 IS - 1 SP - 55 EP - 70 CY - US PB - Network of Peace and Conflict Studies SN - 1082-7307 AD - Coleman, Peter T. N1 - Accession Number: 2005-06030-004. Partial author list: First Author & Affiliation: Coleman, Peter T.; Teachers College, Columbia University, New York, NY, US. Release Date: 20051011. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Community Attitudes; Conflict; Conflict Resolution; Intergroup Dynamics; Intervention. Minor Descriptor: Communities. Classification: Group & Interpersonal Processes (3020); Social Processes & Social Issues (2900). Population: Human (10). Location: Israel; Palestine. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 16. Issue Publication Date: Spr 2005. AB - Scholars and practitioners working with protracted conflicts in polarized communities have long recognized the complex dynamics between intragroup disputes and intergroup relations in these settings. In fact, the multitude of factors interacting within and between groups in these conflicts, and their tendency to change over time, largely contributes to their intractable natures. Unfortunately, the ability of scholars to conduct research on such dynamic phenomena has been largely constrained by the atomistic, linear approach of traditional research models and methods. However, recent advances in dynamical systems theory have provided a new set of tools for developing computer simulations that allow us to model the dynamic patterns emerging from complex interactions of multiple variables over time. This paper presents one such model: a dynamical model of protracted intergroup conflict. Using data collected from Israeli and Palestinian communities during the current Intifada, we modeled the dynamic relations between conflict escalation and international intervention on intragroup subgroup attitude clustering and patterns of intergroup interactions. Next steps and refinements for the model are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - intragroup subgroup attitude clustering KW - external intervention KW - intergroup interaction patterns KW - protracted intergroup conflict KW - polarized communities KW - 2005 KW - Community Attitudes KW - Conflict KW - Conflict Resolution KW - Intergroup Dynamics KW - Intervention KW - Communities KW - 2005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-06030-004&site=ehost-live&scope=site UR - rwicker@spa.com UR - waugh@mail.utexas.edu UR - corji@spa.com UR - hammons_lee@hotmail.com UR - t_gameros@yahoo.com UR - cj2101@columbia.edu UR - DougSAdams@aol.com UR - aschneider@gate.net UR - pc84@columbia.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-03946-006 AN - 2005-03946-006 AU - Samuels, Steven M. AU - Casebeer, William D. T1 - A social psychological view of morality: Why knowledge of situational influences on behaviour can improve character development practices. JF - Journal of Moral Education JO - Journal of Moral Education JA - J Moral Educ Y1 - 2005/03// VL - 34 IS - 1 SP - 73 EP - 87 CY - United Kingdom PB - Taylor & Francis SN - 0305-7240 SN - 1465-3877 AD - Samuels, Steven M., HQ USAFA/DFBL, Department of Behavioral Sciences and Leadership, United States Air Force Academy, USAF Academy, 2354 Fairchild Drive, Suite 6L101, CO, US, 80840 N1 - Accession Number: 2005-03946-006. Partial author list: First Author & Affiliation: Samuels, Steven M.; United States Air Force Academy, CO, US. Release Date: 20050613. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Morality; Personality Development; Personality Traits; Social Psychology. Classification: Psychosocial & Personality Development (2840); Personality Traits & Processes (3120). Population: Human (10). References Available: Y. Page Count: 15. Issue Publication Date: Mar, 2005. AB - Results from research in social psychology, such as findings about the fundamental attribution error and other situational influences on behaviour, are often used to justify attacking the existence of character traits. From this perspective, character development is an illusion, an impossibility, or both. We offer a different interpretation of how these issues interact with character development concerns. Rather than undermining the very idea of character traits, social psychology actually sheds light on the manner in which character development can occur. It reaffirms Spinozistic and Aristotelian points about character, namely that: (1) knowledge of the fundamental attribution error can help us minimize the influence environment and situation have on our behaviour, and (2) proper habituation only takes place in appropriately structured environments. Acknowledging these important results from social psychology helps us improve some of our character education practices rather than destroying their basis. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - morality KW - situational influences KW - character development KW - social psychology KW - 2005 KW - Morality KW - Personality Development KW - Personality Traits KW - Social Psychology KW - 2005 DO - 10.1080/03057240500049349 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-03946-006&site=ehost-live&scope=site UR - Steven.Samuels@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-01140-007 AN - 2005-01140-007 AU - Foster, Craig A. AU - Campbell, W. Keith T1 - The adversity of secret relationships. JF - Personal Relationships JO - Personal Relationships JA - Pers Relatsh Y1 - 2005/03// VL - 12 IS - 1 SP - 125 EP - 143 CY - United Kingdom PB - Blackwell Publishing SN - 1350-4126 SN - 1475-6811 AD - Foster, Craig A., HQ USAFA/DFBL, U.S. Air Force Academy, CO, US, 80840-6228 N1 - Accession Number: 2005-01140-007. Partial author list: First Author & Affiliation: Foster, Craig A.; United States Air Force Academy, CO, US. Other Publishers: Wiley-Blackwell Publishing Ltd. Release Date: 20050228. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Relationship Quality; Romance; Secrecy. Classification: Group & Interpersonal Processes (3020). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adolescence (13-17 yrs) (200); Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 19. Issue Publication Date: Mar, 2005. AB - Are secret romantic relationships alluring or aversive? Previous research suggests that romantic secrecy (i.e., keeping a romantic relationship secret from others) creates a cognitive preoccupation that enhances romantic attraction. In contrast, we predicted that romantic secrecy interferes with relationship interdependence and thereby decreases relationship quality. Three studies of secrecy in ongoing romantic relationships confirmed this prediction. In Study 1, romantic secrecy predicted lower levels of initial relationship quality and decreased relationship quality over a 2-week period. In Study 2, relationship burden mediated partially the negative association between romantic secrecy and relationship quality. In Study 3, the negative association between romantic secrecy and relationship quality was primarily explained by decreased relationship satisfaction. The importance of understanding romantic secrecy is discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - relationship quality KW - secret relationships KW - romantic secrecy KW - 2005 KW - Relationship Quality KW - Romance KW - Secrecy KW - 2005 DO - 10.1111/j.1350-4126.2005.00105.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-01140-007&site=ehost-live&scope=site UR - craig.foster@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-04614-014 AN - 2005-04614-014 AU - Katayama, Andrew D. AU - Shambaugh, R. Neal AU - Doctor, Tasneem T1 - Computers in Teaching: Promoting Knowledge Transfer with Electronic Note Taking. JF - Teaching of Psychology JO - Teaching of Psychology JA - Teach Psychol Y1 - 2005///Spr 2005 VL - 32 IS - 2 SP - 129 EP - 131 CY - US PB - Lawrence Erlbaum SN - 0098-6283 SN - 1532-8023 AD - Katayama, Andrew D., United States Air Force Academy, Department of Behavioral Sciences & Leadership, HQ USAFA/DFBL, 2354 Fairchild Drive, Suite 6L101B, CO, US, 80840-6228 N1 - Accession Number: 2005-04614-014. Partial author list: First Author & Affiliation: Katayama, Andrew D.; United States Air Force Academy, CO, US. Other Publishers: Sage Publications; Taylor & Francis. Release Date: 20050531. Correction Date: 20111003. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Computer Assisted Instruction; Knowledge Level; Knowledge Transfer; Note Taking; Student Attitudes. Classification: Curriculum & Programs & Teaching Methods (3530). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 3. Issue Publication Date: Spr 2005. AB - We investigated the differences between (a) copying and pasting text versus typed note-taking methods of constructing study notes simultaneously with (b) vertically scaffolded versus horizontally scaffold notes on knowledge transfer. Forty-seven undergraduate educational psychology students participated. Materials included 2 electronic chapter-length texts, 2 sets of computerized study notes, 2 tests (fact and application), and an attitudinal survey. Only the application test revealed a significant main effect for notes format. We conclude that keying in notes leads to higher retention of knowledge transfer than copying and pasting notes after a 1-week delay. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - knowledge transfer KW - note taking methods KW - student attitudes KW - computer based instruction KW - 2005 KW - Computer Assisted Instruction KW - Knowledge Level KW - Knowledge Transfer KW - Note Taking KW - Student Attitudes KW - 2005 DO - 10.1207/s15328023top3202_9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-04614-014&site=ehost-live&scope=site UR - andrew.katayama@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2011-14467-015 AN - 2011-14467-015 AU - Simpson, Brian D. AU - Bolia, Robert S. AU - McKinley, Richard L. AU - Brungart, Douglas S. T1 - The impact of hearing protection on sound localization and orienting behavior. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2005///Spr 2005 VL - 47 IS - 1 SP - 188 EP - 198 CY - US PB - Human Factors & Ergonomics Society SN - 0018-7208 SN - 1547-8181 AD - Simpson, Brian D., Air Force Research Laboratory (AFRL/HECB), 2610 Seventh St., Wright- Patterson AFB, Dayton, OH, US, 45433-7901 N1 - Accession Number: 2011-14467-015. PMID: 15960096 Partial author list: First Author & Affiliation: Simpson, Brian D.; Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, US. Other Publishers: Sage Publications. Release Date: 20110815. Correction Date: 20120618. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Conference Information: Human Factors and Ergonomics Society, 46th. Conference Note: Annual Meeting. Major Descriptor: Auditory Localization; Auditory Stimulation; Perceptual Orientation; Visual Search. Minor Descriptor: Safety Devices. Classification: Human Experimental Psychology (2300). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 11. Issue Publication Date: Spr 2005. Publication History: Accepted Date: May 13, 2004; First Submitted Date: Mar 7, 2003. Copyright Statement: All rights reserved. Human Factors and Ergonomics Society. 2005. AB - The effect of hearing protection devices (HPDs) on sound localization was examined in the context of an auditory-cued visual search task. Participants were required to locate and identify a visual target in a field of 5, 20, or 50 visual distractors randomly distributed on the interior surface of a sphere. Four HPD conditions were examined: earplugs, earmuffs, both earplugs and earmuffs simultaneously (double hearing protection), and no hearing protection. In addition, there was a control condition in which no auditory cue was provided. A repeated measures analysis of variance revealed significant main effects of HPD for both search time and head motion data (p < .05), indicating that the degree to which localization is disrupted by HPDs varies with the type of device worn. When both earplugs and earmuffs are worn simultaneously, search times and head motion are more similar to those found when no auditory cue is provided than when either earplugs or earmuffs alone are worn, suggesting that sound localization cues are so severely disrupted by double hearing protection the listener can recover little or no information regarding the direction of sound source origin. Potential applications of this research include high-noise military, aerospace, and industrial settings in which HPDs are necessary but wearing double protection may compromise safety and/or performance. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - orienting behavior KW - auditory stimulation KW - auditory localization KW - safety devices KW - visual search KW - hearing protection KW - 2005 KW - Auditory Localization KW - Auditory Stimulation KW - Perceptual Orientation KW - Visual Search KW - Safety Devices KW - 2005 U1 - Sponsor: Air Force Office of Scientific Research. Recipients: No recipient indicated DO - 10.1518/0018720053653866 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-14467-015&site=ehost-live&scope=site UR - brian.simpson@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Pedersen, Todd. R. AU - Gerken, Elizabeth A. T1 - Creation of visible artificial optical emissions in the aurora by high-power radio waves. JO - Nature JF - Nature Y1 - 2005/02/03/ VL - 433 IS - 7025 M3 - Article SP - 498 EP - 500 SN - 00280836 AB - Generation of artificial light in the sky by means of high-power radio waves interacting with the ionospheric plasma has been envisaged since the early days of radio exploration of the upper atmosphere, with proposed applications ranging from regional night-time street lighting to atmospheric measurements. Weak optical emissions have been produced for decades in such ionospheric‘heating’experiments, where they serve as key indicators of electron acceleration, thermal heating, and other effects of incompletely understood wave-particle interactions in the plasma under conditions difficult to replicate in the laboratory. The extremely low intensities produced previously have, however, required sensitive instrumentation for detection, preventing applications beyond scientific research. Here we report observations of radio-induced optical emissions bright enough to be seen by the naked eye, and produced not in the quiet mid-latitude ionosphere, but in the midst of a pulsating natural aurora. This may open the door to visual applications of ionospheric heating technology or provide a way to probe the dynamics of the natural aurora and magnetosphere. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Light KW - Auroras KW - Radio waves KW - Radio (Medium) KW - Blood plasma KW - Laboratories N1 - Accession Number: 15910174; Pedersen, Todd. R. 1; Gerken, Elizabeth A. 2; Affiliations: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731, USA; 2: Department of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, USA; Issue Info: 2/3/2005, Vol. 433 Issue 7025, p498; Thesaurus Term: Light; Subject Term: Auroras; Subject Term: Radio waves; Subject Term: Radio (Medium); Subject Term: Blood plasma; Subject Term: Laboratories; NAICS/Industry Codes: 414510 Pharmaceuticals and pharmacy supplies merchant wholesalers; NAICS/Industry Codes: 621511 Medical Laboratories; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 541940 Veterinary Services; NAICS/Industry Codes: 515111 Radio Networks; Number of Pages: 3p; Document Type: Article L3 - 10.1038/nature03243 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=15910174&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Iarve, E.V. AU - Mollenhauer, D. AU - Kim, R. T1 - Theoretical and experimental investigation of stress redistribution in open hole composite laminates due to damage accumulation JO - Composites: Part A, Applied Science & Manufacturing JF - Composites: Part A, Applied Science & Manufacturing Y1 - 2005/02// VL - 36 IS - 2 M3 - Article SP - 163 EP - 171 SN - 1359835X AB - Abstract: Two methods were examined for the prediction of stress redistribution due to subcritical damage accumulation near open holes in composite laminates. A finite element analysis in conjunction with the method of material property degradation was performed to assess the accuracy of the fiber direction stress redistribution prediction due to formation of longitudinal splitting. A simple case of a unidirectional composite with an open hole was considered. The method was unable to accurately predict the fiber stress relaxation due to longitudinal splitting, which in the case of laminates with holes is of paramount importance for the accurate prediction of ultimate strength. Three-dimensional ply level modeling of discrete damage near an open hole in a quasi-isotropic composite laminate was subsequently considered. Normally the mesh configuration is dictated by the boundaries of the specimen, such as the presence of a hole, creating formidable difficulties to modeling matrix cracking, which is aligned with the fiber direction in a given ply. A mesh independent displacement discontinuity modeling method based on higher order shape functions was constructed for this purpose. The surface of the displacement jump associated with matrix cracking was defined in terms of the domain Heaviside function approximated by using higher order polynomial B-splines. Moiré interferometry was used to determine the strain and displacement fields in the surface layers of a quasi-isotropic composite, previously prestressed beyond the damage initiation load. Good correlation between the experimental data and the stress redistribution predicted by the mesh independent damage modeling technique was observed. [Copyright &y& Elsevier] AB - Copyright of Composites: Part A, Applied Science & Manufacturing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESIDUAL stresses KW - STRAINS & stresses (Mechanics) KW - STRENGTH of materials KW - MECHANICAL movements KW - A. Laminates KW - B. Strength KW - C. Numerical analysis KW - Moiré interferometry N1 - Accession Number: 19256089; Iarve, E.V. 1; Email Address: endel.iarve@wpafb.af.mil; Mollenhauer, D. 2; Kim, R. 1; Affiliations: 1: University of Dayton Research Institute, 300 College Park Avenue, Dayton, OH 45469-0168, USA; 2: US Air Force Research Laboratory, AFRL/MLBC, Wright-Patterson AFB, OH 45433-7750, USA; Issue Info: Feb2005, Vol. 36 Issue 2, p163; Subject Term: RESIDUAL stresses; Subject Term: STRAINS & stresses (Mechanics); Subject Term: STRENGTH of materials; Subject Term: MECHANICAL movements; Author-Supplied Keyword: A. Laminates; Author-Supplied Keyword: B. Strength; Author-Supplied Keyword: C. Numerical analysis; Author-Supplied Keyword: Moiré interferometry; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.compositesa.2004.06.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=19256089&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Armacost, Andrew P. AU - Lowe, James K. T1 - Decision support for the career field selection process at the US Air Force Academy. JO - European Journal of Operational Research JF - European Journal of Operational Research Y1 - 2005/02// VL - 160 IS - 3 M3 - Article SP - 839 EP - 850 SN - 03772217 AB - Each year, the US Air Force Academy graduates nearly 1000 young men and women. To support the decision of which cadets will be classified into which career fields, we describe a linear programming formulation with appealing computational properties that enable it as the core of a decision support tool. We explore methods for measuring and balancing cadets' class standing, Air Force career field requirements, and cadets' career field preferences in the context of this model. Our computational experiments demonstrate the improvement of this method over previous classification approaches, yielding more than 10% increase in the number of cadets assigned to their top career field choice and yielding nearly a 100% reduction in the number of cadets not receiving any of their career field choices. We also explore alternative methods for measuring cadets' career field preferences and demonstrate the positive effect of the new measurement scheme on the overall classification. Because of the short running time of this model, it will serve as a flexible, real-time component of the Academy's classification process. [ABSTRACT FROM AUTHOR] AB - Copyright of European Journal of Operational Research is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DECISION support systems KW - LINEAR programming KW - CAREER development KW - CLASSIFICATION KW - Human resources KW - Linear programming KW - Manpower planning KW - Military KW - Network flows KW - UNITED States. Air Force N1 - Accession Number: 14666548; Armacost, Andrew P. 1; Email Address: andy.armacost@usafa.af.mil; Lowe, James K. 1; Email Address: jim.lowe@usafa.af.mil; Affiliations: 1: Department of Management, 2354 Fairchild Drive, Suite 6H128, US Air Force Academy, CO 80840, USA; Issue Info: Feb2005, Vol. 160 Issue 3, p839; Thesaurus Term: DECISION support systems; Thesaurus Term: LINEAR programming; Thesaurus Term: CAREER development; Subject Term: CLASSIFICATION; Author-Supplied Keyword: Human resources; Author-Supplied Keyword: Linear programming; Author-Supplied Keyword: Manpower planning; Author-Supplied Keyword: Military; Author-Supplied Keyword: Network flows ; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 624310 Vocational Rehabilitation Services; NAICS/Industry Codes: 611430 Professional and Management Development Training; NAICS/Industry Codes: 928110 National Security; Number of Pages: 12p; Illustrations: 1 Diagram, 4 Charts, 5 Graphs; Document Type: Article L3 - 10.1016/j.ejor.2002.11.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=14666548&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Goobic, Adam P. AU - Tang, Jinshan AU - Acton, Scott T. T1 - Image Stabilization and Registration for Tracking Cells in the Microvasculature. JO - IEEE Transactions on Biomedical Engineering JF - IEEE Transactions on Biomedical Engineering J1 - IEEE Transactions on Biomedical Engineering PY - 2005/02// Y1 - 2005/02// VL - 52 IS - 2 M3 - Article SP - 287 EP - 299 SN - 00189294 AB - We propose a registration system to be used for tracking cells in intravital video microscopy that 1) stabilizes jitter-the undesired translational displacement of frames due to respiratory movement, etc., and 2) registers frames in a moving field of view (F0V) to allow for cell tracking over an extended range. For the first time, tracking of rolling leukocytesin vivo over a moving FOV is demonstrated. In a fixed FOV, stable background regions are located using a morphological approach. Template subregions are then selected from the stable regions and matched to corresponding locations in a reference frame. We show the effectiveness of the stabilization algorithm by using an active contour to track 15 leukocytes previously untrackable due to jitter. For 30 fixed FOV sequences containing rolling leukocytes, the resulting root-mean-square error (RMSE) is less than 0.5 μm. To align frames iii a moving FOV, we present a modified correlation approach to estimate the common region between two consecutive fixed FOVs. We correlate the overlapping regions of the initial frame of the current fixed FOV and the final frame of the previous fixed FOV to register the images in the adjoining moving FOV. The RMSE of our moving FOV registration technique was less than 0.6 μm. In 10 sequences from different venules, we were able to track 11 cells using an active contour approach over moving FOVs. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Biomedical Engineering is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CELLS KW - MICROSCOPY KW - VIDEO microscopy KW - PHYSIOLOGY KW - LEUCOCYTES KW - ALGORITHMS KW - BLOOD cells N1 - Accession Number: 15937844; Source Information: Feb2005, Vol. 52 Issue 2, p287; Subject Term: CELLS; Subject Term: MICROSCOPY; Subject Term: VIDEO microscopy; Subject Term: PHYSIOLOGY; Subject Term: LEUCOCYTES; Subject Term: ALGORITHMS; Subject Term: BLOOD cells; Subject Term: ; Number of Pages: 13p; ; Document Type: Article; L3 - 10.1109/TBME.2004.840468 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=15937844&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Buryachenko, V. A. AU - Pagano, N. J. T1 - The Multiscale Analysis of Multiple Interacting Inclusions Problem: Finite Number of Interacting Inclusions. JO - Mathematics & Mechanics of Solids JF - Mathematics & Mechanics of Solids Y1 - 2005/02// VL - 10 IS - 1 M3 - Article SP - 25 EP - 62 SN - 10812865 AB - A hybrid method based on the combination of the volume integral equation (VIE) method and the boundary integral equation (BIE) method is proposed for the micro-macro solution of elastostatic 2D and 3D multiscaleproblems in bounded or unbounded solids containing interacting multiple inclusions of essentially different scale. The hybrid micro--macro formulation allows decomposition of the complete problem into two associated subproblems, one residing entirely at the micro-level and the other at the macro-level at each iteration. The efficiency of the standard iterative scheme of the BIE and VIE methods for the singular integral equations involved is enhanced by the use of a modification in the spirit of a subtraction technique as well as by the advantageous choice of the initial analytical approximation for interacting inclusions (micro-level) in an unbounded medium subjected to inhomogeneous loading. The latter is evaluated by the macro-scale BIE technique capable of handling complex finite geometries and mixed boundary conditions. The iteration method proposed converges rapidly in a wide class of problems considered with high matrix-inclusion elastic contrast, with continuously varying anisotropic and nonlinear elastic properties of inclusions, as well as with sizes of interacting inclusions differing by a factor varying in the interval from 1 to 107. The accuracy and efficiency of the method are examined through comparison with results obtained from finite-element analysis and boundary element analysis as well as from analytical solution. [ABSTRACT FROM AUTHOR] AB - Copyright of Mathematics & Mechanics of Solids is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTEGRAL equations KW - FUNCTIONAL equations KW - BOUNDARY element methods KW - NUMERICAL analysis KW - MATHEMATICS KW - elastic material KW - inhomogeneous material KW - Microstructures N1 - Accession Number: 15958591; Buryachenko, V. A. 1; Pagano, N. J. 2; Source Information: Feb2005, Vol. 10 Issue 1, p25; Subject: INTEGRAL equations; Subject: FUNCTIONAL equations; Subject: BOUNDARY element methods; Subject: NUMERICAL analysis; Subject: MATHEMATICS; Author-Supplied Keyword: elastic material; Author-Supplied Keyword: inhomogeneous material; Author-Supplied Keyword: Microstructures; Number of Pages: 38p; Illustrations: 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1177/1081286505031174 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=15958591&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Best, Steven R. T1 - A Discussion on the Quality Factor of Impedance Matched Electrically Small Wire Antennas. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2005/01/15/Jan2005 Part 2 of 2 Y1 - 2005/01/15/Jan2005 Part 2 of 2 VL - 53 IS - 1 M3 - Article SP - 502 EP - 508 SN - 0018926X AB - The quality factors of several impedance matched, electrically small wire antennas are compared as a function of matching technique and antenna geometry. The antennas considered have the same height and wire diameter, and they are designed to be self-resonant at approximately the same frequency. The antennas are impedance matched to a nominal 50 Ohm characteristic impedance using either a parallel stub, lossless reactive network or lossless transformer. It is shown that the quality factors of the antennas are essentially the same, and for the most part, independent of the matching technique and differences in the antenna geometry. The quality factor of the impedance matched, electrically small antenna is primarily established by the antenna's height and effective volume. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC impedance KW - ALTERNATING currents KW - ELECTRIC lines KW - RESEARCH KW - ANTENNAS (Electronics) KW - ELECTRIC power distribution N1 - Accession Number: 15851087; Source Information: Jan2005 Part 2 of 2, Vol. 53 Issue 1, p502; Subject Term: ELECTRIC impedance; Subject Term: ALTERNATING currents; Subject Term: ELECTRIC lines; Subject Term: RESEARCH; Subject Term: ANTENNAS (Electronics); Subject Term: ELECTRIC power distribution; Subject Term: ; Number of Pages: 7p; ; Document Type: Article; L3 - 10.1109/TAP.2004.837107 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=15851087&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Barnes, Paul N. AU - Rhoads, Gregory L. AU - Tolliver, Justin C. AU - Sumption, Michael D. AU - Schmaeman, Kevin W. T1 - Compact, Lightweight, Superconducting Power Generators. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics J1 - IEEE Transactions on Magnetics PY - 2005/01/02/Jan2005 Part 2 of 2 Y1 - 2005/01/02/Jan2005 Part 2 of 2 VL - 41 IS - 1 M3 - Article SP - 268 EP - 273 SN - 00189464 AB - Many future military systems will depend heavily on high electrical power input ranging from hundreds of kilowatts up to the multimegawatt level. These weapon systems include electromagnetic launch applications as well as electrically driven directed energy weapons (DEW), such as high-power microwaves and solid-state lasers. These power generation subsystems must often be packaged using limited space and strict weight units on either ground mobile or airborne platforms. Superconducting generators made of high-temperature superconductors (HTS) will enable megawatt-class airborne power systems that are lightweight and compact. Also discussed briefly are new advances in HTS conductors and refrigeration systems furthering the development of HTS power systems. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTORS KW - ELECTRIC generators KW - WEAPONS systems KW - ELECTROMAGNETIC devices KW - MICROWAVES KW - ELECTRIC power production N1 - Accession Number: 15850947; Source Information: Jan2005 Part 2 of 2, Vol. 41 Issue 1, p268; Subject Term: SUPERCONDUCTORS; Subject Term: ELECTRIC generators; Subject Term: WEAPONS systems; Subject Term: ELECTROMAGNETIC devices; Subject Term: MICROWAVES; Subject Term: ELECTRIC power production; Subject Term: ; Number of Pages: 6p; ; Document Type: Article; L3 - 10.1109/TMAG.2004.838984 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=15850947&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 106488370 T1 - Mentoring toward autonomy in the ambulatory care environment. AU - Burns A Y1 - 2005/01//Jan/Feb2005 N1 - Accession Number: 106488370. Language: English. Entry Date: 20050722. Revision Date: 20150820. Publication Type: Journal Article; CEU; pictorial; tables/charts. Journal Subset: Nursing; USA. KW - Ambulatory Care Nursing KW - Mentorship KW - Adaptation, Psychological KW - Education, Continuing (Credit) KW - Information Resources SP - 1 EP - 12 JO - AAACN Viewpoint JF - AAACN Viewpoint JA - AAACN VIEWPOINT VL - 27 IS - 1 CY - Pitman, New Jersey PB - American Academy of Ambulatory Care Nursing AD - Major, United States Air Force Nurse Corps, Health Care Integrator, 52nd Medical Group, Spangdahlem Air Base, Germany; ann.burns@spangdahlem.af.mil UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106488370&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - CHAP AU - Jennings, William W. AD - US Air Force Academy A2 - Hirschey, Mark A2 - John, Kose A2 - Makhija, Anil K. T1 - Further Evidence on Institutional Ownership and Corporate Value T2 - Corporate Governance: A Global Perspective PB - Advances in Financial Economics, vol. 11. PB - Amsterdam and San Diego: PB - JAI, Elsevier Y1 - 2005/// SP - 167 EP - 207 N1 - Accession Number: 0861064; Reviewed Book ISBN: 0-7623-1187-8; Keywords: Ownership; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Collective Volume Article; Update Code: 200608 KW - Pension Funds; Non-bank Financial Institutions; Financial Instruments; Institutional Investors G23 KW - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill G32 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0861064&site=ehost-live&scope=site DP - EBSCOhost DB - ecn ER - TY - CHAP ID - 2004-21270-005 AN - 2004-21270-005 AU - Hedges, Dawson AU - Burchfield, Colin ED - Slife, Brent D. ED - Reber, Jeffrey S. ED - Richardson, Frank C. ED - Slife, Brent D., (Ed) ED - Reber, Jeffrey S., (Ed) ED - Richardson, Frank C., (Ed) T1 - The Assumptions and Implications of the Neurobiological Approach to Depression. T2 - Critical thinking about psychology: Hidden assumptions and plausible alternatives. Y1 - 2005/// SP - 99 EP - 120 CY - Washington, DC, US PB - American Psychological Association SN - 1-59147-187-7 N1 - Accession Number: 2004-21270-005. Partial author list: First Author & Affiliation: Hedges, Dawson; Department of Psychology, Brigham Young University, Provo, UT, US. Release Date: 20041220. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 1-59147-187-7, Hardcover. Language: English. Major Descriptor: Experimentation; Major Depression; Neurobiology; Neurology; Trends. Minor Descriptor: Psychiatry; Psychology. Classification: Affective Disorders (3211). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 22. AB - Focuses on depression as an exemplar of the current trend toward neurobiological explanations of behavior, thought, and mind in the fields of psychology and psychiatry. Utilizing this focus, the chapter also presents a critical evaluation of the history, literature, assumptions, and implications of neuroscientific research and explores the underlying philosophy framing the research and its search interpretation, particularly as it pertains to depression. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - depression KW - major depression KW - neuroscientific research KW - psychology KW - psychiatry KW - neurobiological approach KW - critical evaluation KW - research philosophy KW - research interpretation KW - 2005 KW - Experimentation KW - Major Depression KW - Neurobiology KW - Neurology KW - Trends KW - Psychiatry KW - Psychology KW - 2005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-21270-005&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Lang Hong AU - Ningzhou Cui AU - Pronobis, Mark AU - Scott, Stephen T1 - Local Motion Feature Aided Ground Moving Target Tracking With GMTI and HRR Measurements. JO - IEEE Transactions on Automatic Control JF - IEEE Transactions on Automatic Control Y1 - 2005/01// VL - 50 IS - 1 M3 - Article SP - 127 EP - 133 SN - 00189286 AB - Tracking ground moving targets with ground moving target indicator (GMTI) measurements only could face a potential problem of losing tracks or track mingling, if the targets move together within the range of GMTI sensing uncertainty for an extended period of time. We propose a remedy for this problem by using local motion features extracted from high resolution range (RRR) profiles to assist data association. Unlike other HRR features, the new local motion features carry both spatial and temporal information and are ideal for feature aided tracking. A probabilistic logic based tracker is developed for local motion feature aided tracking. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Automatic Control is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH resolution electron microscopy KW - ELECTRON microscopy KW - MICROSCOPY KW - ELECTRON microscopic diagnosis KW - ELECTRON microscopic immunocytochemistry KW - FRACTOGRAPHY N1 - Accession Number: 16053143; Lang Hong 1; Email Address: lhong@cs.wright.edu; Ningzhou Cui 1; Pronobis, Mark 2; Scott, Stephen 2; Affiliations: 1: Department of Electrical Engineering, Wright State University, Dayton, OH 45435 USA.; 2: Information Directorate, Air Force Research Laboratory, Rome, NY 13441 USA.; Issue Info: Jan2005, Vol. 50 Issue 1, p127; Subject Term: HIGH resolution electron microscopy; Subject Term: ELECTRON microscopy; Subject Term: MICROSCOPY; Subject Term: ELECTRON microscopic diagnosis; Subject Term: ELECTRON microscopic immunocytochemistry; Subject Term: FRACTOGRAPHY; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TAC.2004.841119 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=16053143&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Robertson, Mark A. AU - Stevenson, Robert L. T1 - DCT Quantization Noise in Compressed Images. JO - IEEE Transactions on Circuits & Systems for Video Technology JF - IEEE Transactions on Circuits & Systems for Video Technology J1 - IEEE Transactions on Circuits & Systems for Video Technology PY - 2005/01// Y1 - 2005/01// VL - 15 IS - 1 M3 - Article SP - 27 EP - 38 SN - 10518215 AB - In lossy image compression schemes utilizing the discrete cosine transform (DCT), quantization of the DCT coefficients introduces error in the image representation and a loss of signal in- formation. At high compression ratios, this introduced error produces visually undesirable compression artifacts that can dramatically lower the perceived quality of a particular image. This paper provides a spatial domain model of the quantization error based on a statistical noise model of the error introduced when quantizing the DCT coefficients. The resulting theoretically derived spatial domain quantization noise model shows that in general the compression noise in the spatial domain is both correlated and spatially varying. This provides some justification to many of the ad hoc artifact removal filters that have been proposed. More importantly, the proposed noise model can be incorporated in a post-processing algorithm that correctly incorporates the spatial correction of the quantizer error. Experimental results demonstrate the effectiveness of this approach. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Circuits & Systems for Video Technology is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DATA compression (Telecommunication) KW - IMAGE compression KW - ALGORITHMS KW - NOISE KW - DATA transmission systems KW - CODING theory N1 - Accession Number: 15620830; Source Information: Jan2005, Vol. 15 Issue 1, p27; Subject Term: DATA compression (Telecommunication); Subject Term: IMAGE compression; Subject Term: ALGORITHMS; Subject Term: NOISE; Subject Term: DATA transmission systems; Subject Term: CODING theory; Subject Term: ; Number of Pages: 12p; ; Document Type: Article; L3 - 10.1109/TCSVT.2004.839995 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=15620830&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - CHAP ID - 2005-01983-011 AN - 2005-01983-011 AU - Miller, Robyn R. AU - Smoot, Richard L. ED - VandeCreek, Leon ED - VandeCreek, Leon, (Ed) T1 - Combining Psychopharmacology and Psychotherapy. T2 - Innovations in clinical practice: Focus on adults. T3 - A volume in the innovations in clinical practice series Y1 - 2005/// SP - 203 EP - 217 CY - Sarasota, FL, US PB - Professional Resource Press/Professional Resource Exchange SN - 1-56887-091-4 AD - Miller, Robyn R., 6th Medical Group/6MDOS/SGOH, MacDill AFB, 8415 Bayshore Avenue, Tampa, FL, US, 33621-1607 N1 - Accession Number: 2005-01983-011. Partial author list: First Author & Affiliation: Miller, Robyn R.; United States Air Force, MacDill AFB, Tampa, FL, US. Release Date: 20050404. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 1-56887-091-4, Paperback. Language: English. Major Descriptor: Interdisciplinary Treatment Approach; Mental Disorders; Psychopharmacology; Psychotherapy. Minor Descriptor: Costs and Cost Analysis; Managed Care. Classification: Health & Mental Health Treatment & Prevention (3300). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 15. AB - Numerous authors have described the potential benefits of combining psychotherapy and pharmacotherapy in the treatment of mental disorders. The realities of the managed care system have limited the scope of practice for psychiatrists to the prescribing of psychotropic medications and reserved much of the psychotherapeutic interventions to the less-expensive billable hours of nonphysicians. Societal issues pertaining to cost-effectiveness and utilization of limited professional resources have determined the necessity of dividing the mental health intervention responsibilities between physicians and nonphysicians. This collaboration between different mental health professionals in the care of a patient is referred to as collaborative, combined, split, shared, concurrent, and multidisciplinary care. Although 'collaborative' connotes the ideal working arrangement between providers, for the purposes of this contribution, we will be referring to this therapeutic arrangement as 'combined treatment' in order to reflect the evident division of the providers' responsibilities with the goal of collaboration. This contribution will focus on the process and effectiveness of combined treatment, as well as suggestions for improving the synergistic collaboration between psychopharmacologists and psychotherapists. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - psychopharmacology KW - psychotherapy KW - mental disorders KW - combined treatment KW - cost-effectiveness KW - managed care KW - multidisciplinary care KW - 2005 KW - Interdisciplinary Treatment Approach KW - Mental Disorders KW - Psychopharmacology KW - Psychotherapy KW - Costs and Cost Analysis KW - Managed Care KW - 2005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-01983-011&site=ehost-live&scope=site UR - rlsmoot05@msn.com UR - robyn.miller-02@macdill.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Williamson, David T. AU - Draper, Mark H. AU - Calhoun, Gloria L. AU - Barry, Timothy P. T1 - Commercial Speech Recognition Technology in the Military Domain: Results of Two Recent Research Efforts. JO - International Journal of Speech Technology JF - International Journal of Speech Technology Y1 - 2005/01// VL - 8 IS - 1 M3 - Article SP - 9 EP - 16 PB - Springer Science & Business Media B.V. SN - 13812416 AB - While speech recognition technology has long held the potential for improving the effectiveness of military operations, it has only been within the last several years that speech systems have enabled the realization of that potential. Commercial speech recognition technology developments aimed at improving robustness for automotive and cellular phone applications have capabilities that can be exploited in various military systems. This paper discusses the results of two research efforts directed toward applying commercial-off-the-shelf speech recognition technology in the military domain. The first effort discussed is the development and evaluation of a speech recognition interface to the Theater Air Planning system responsible for the generation of air tasking orders in a military Air Operations Center. The second effort examined the utility of speech versus conventional manual input for tasks performed by operators in an unmanned aerial vehicle control station simulator. Both efforts clearly demonstrate the military benefits obtainable from the proper application of speech technology. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Speech Technology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Speech perception KW - Automatic speech recognition KW - Command & control systems KW - Remotely piloted vehicles KW - Military art & science KW - Air Operations Center KW - command & control KW - speech recognition KW - unmanned aerial vehicle N1 - Accession Number: 16620440; Williamson, David T. 1; Email Address: david.williamson@wpafb.af.mil; Draper, Mark H. 1; Calhoun, Gloria L. 1; Barry, Timothy P. 2; Affiliations: 1: Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; 2: Sytronics, Inc., 4433 Dayton Xenia Rd, Bldg 1, Dayton, OH 45432, USA; Issue Info: Jan2005, Vol. 8 Issue 1, p9; Thesaurus Term: Speech perception; Thesaurus Term: Automatic speech recognition; Subject Term: Command & control systems; Subject Term: Remotely piloted vehicles; Subject Term: Military art & science; Author-Supplied Keyword: Air Operations Center; Author-Supplied Keyword: command & control; Author-Supplied Keyword: speech recognition; Author-Supplied Keyword: unmanned aerial vehicle; Number of Pages: 8p; Illustrations: 1 Color Photograph, 1 Diagram, 1 Chart; Document Type: Article L3 - 10.1007/s10772-005-4758-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=16620440&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Birman, Victor AU - Byrd, Larry W. T1 - Effect of z-Pins on Fracture in Composite Cocured Double Cantilever Beams. JO - Journal of Aerospace Engineering JF - Journal of Aerospace Engineering J1 - Journal of Aerospace Engineering PY - 2005/01// Y1 - 2005/01// VL - 18 IS - 1 M3 - Article SP - 51 EP - 59 PB - American Society of Civil Engineers SN - 08931321 AB - The paper illustrates a new approach to the evaluation of the effect of z-pins on deformations and the strain energy release rate in composite double cantilever beams (DCB) subject to a standard fracture toughness test. The effect of z-pins is modeled by an elastic foundation, based on previously published work. The approach to the solution is based on a separate analysis of the intact and delaminated parts of DCB. The rotational stiffness of the intact part is obtained from the Rayleigh-Ritz solution for this part subjected to a force couple, rather than modeling the rotational restraint by introducing an elastic foundation, as has been done in the previous studies. Subsequently, the deformation of the delaminated part of DCB is analyzed exactly by solving the equation of equilibrium with the appropriate boundary conditions. Based on this solution, the compliance, the rate of change of compliance, and the strain energy of the specimen can be evaluated. The results illustrate the beneficial effect of z-pins on the resistance of DCB to delamination cracking. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerospace Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRACTURE mechanics KW - CANTILEVER bridges KW - COMPOSITE materials KW - DEFORMATIONS (Mechanics) KW - JOINTS (Engineering) N1 - Accession Number: 15382516; Source Information: Jan2005, Vol. 18 Issue 1, p51; Subject Term: FRACTURE mechanics; Subject Term: CANTILEVER bridges; Subject Term: COMPOSITE materials; Subject Term: DEFORMATIONS (Mechanics); Subject Term: JOINTS (Engineering); Subject Term: ; Number of Pages: 9p; ; Illustrations: 3 Diagrams, 2 Charts, 6 Graphs; ; Document Type: Article; L3 - 10.1061/(ASCE)0893-1321(2005)18:1(51) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=15382516&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Reich, Gregory W. AU - Bowman, Jason C. AU - Sanders, Brian T1 - Large-Area Aerodynamic Control for High-Altitude Long-Endurance Sensor Platforms. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2005/01//Jan/Feb2005 Y1 - 2005/01//Jan/Feb2005 VL - 42 IS - 1 M3 - Article SP - 237 EP - 244 SN - 00218669 AB - The use of large-area aerodynamic control schemes to enable high-altitude long-endurance sensor platforms is investigated. The focus is on a vehicle with a joined-wing design. The vehicle has two performance shortcomings that are considered typical of the broader class of high-altitude long-endurance vehicles. The first is minimum roll rate at landing due to the large amount of roll damping associated with these configurations. It is shown that multiple distributed control surfaces can help meet the roll rate requirements. The second is sensitivity of takeoff gross weight to maximum lift-to-drag ratio. Notional mission requirements drive the fuel fraction to high levels and small changes in lift-to-drag ratio can enable large changes in the vehicle weight through reduced fuel requirements. It is shown that the same technology used to satisfy the roll requirement can also be used to actively control the twist and camber during cruise and can have a moderate impact on the vehicle weight or endurance. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - AERONAUTICS KW - DAMPING (Mechanics) KW - FUEL KW - VEHICLES N1 - Accession Number: 16304363; Source Information: Jan/Feb2005, Vol. 42 Issue 1, p237; Subject Term: AERODYNAMICS; Subject Term: AERONAUTICS; Subject Term: DAMPING (Mechanics); Subject Term: FUEL; Subject Term: VEHICLES; Subject Term: ; Number of Pages: 8p; ; Illustrations: 6 Diagrams, 2 Charts, 6 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=16304363&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Janardhan, Srinivasan AU - Grandhi, Ramana V. AU - Eastep, Frank AU - Sanders, Brian T1 - Parametric Studies of Transonic Aeroelastic Effects of an Aircraft Wing/Tip Store. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2005/01//Jan/Feb2005 Y1 - 2005/01//Jan/Feb2005 VL - 42 IS - 1 M3 - Article SP - 253 EP - 263 SN - 00218669 AB - This research investigates the effect of store parameters variation on store-induced flutter and limit-cycle oscillation phenomena of an aircraft wing in the transonic regime. The primary store parameters were its mass and the chordwise location of its center of gravity. The effect of including store aerodynamics on the wing/tip store configuration was also investigated. The tip store center of gravity (c.g.) was varied and positioned at three different locations: 32.5, 40, and 50%, with respect to aerodynamic tip chord. Automated Structural Optimization System and Computational Aeroelasticity Program-Transonic Small Disturbance were used in the linear and nonlinear region to perform this research. Studies showed that flutter speed increases as the store c.g. was moved forward toward the leading edge. This gives an indication that store c.g. must be placed as far forward as possible with respect to the elastic axis to delay the occurrence of flutter, while satisfying other design constraints, it was observed that the increase in tip store mass significantly reduced the flight operating speed range of the aircraft. The effect of inclusion of store aerodynamics for different wing/store configurations was found to be insignificant compared to their corresponding mass-only models in the transonic regime. The limit-cycle oscillation (LCO) onset speed was found to be sensitive to both store mass and store e.g. parameters and varied significantly for different store mass configurations. The LCO onset speed decreased significantly with increase in store mass and aft movement of store c.g. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - PARAMETER estimation KW - OSCILLATIONS KW - AERODYNAMICS KW - FLUTTER (Aerodynamics) N1 - Accession Number: 16304365; Source Information: Jan/Feb2005, Vol. 42 Issue 1, p253; Subject Term: AIRPLANE wings; Subject Term: PARAMETER estimation; Subject Term: OSCILLATIONS; Subject Term: AERODYNAMICS; Subject Term: FLUTTER (Aerodynamics); Subject Term: ; Number of Pages: 11p; ; Illustrations: 7 Diagrams, 12 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=16304365&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR T1 - MANAGEMENT OF A MIDSHAFT FEMORAL STRESS FRACTURE IN A DIRECT ACCESS PHYSICAL THERAPY SETTING. (Poster Session) AU - Weishaar, M.D. AU - Moore, J.H. AU - DeBerardino Thomas, M. JO - Journal of Orthopaedic & Sports Physical Therapy JF - Journal of Orthopaedic & Sports Physical Therapy Y1 - 2005/01// VL - 35 IS - 1 SP - A87 EP - a88 CY - ; SN - 01906011 N1 - Accession Number: SPHS-970713; Author: Weishaar, M.D.: 1 Author: Moore, J.H.: 2 Author: DeBerardino Thomas, M.: 3 ; Author Affiliation: 1 United States Air Force Academy Hospital, USAF Academy, CO, USA; 67th Combat Support Hospital, Tikrit, Iraq; Keller Army Community Hospital, West Point, NY, USA: 2 United States Air Force Academy Hospital, USAF Academy, CO, USA; 67th Combat Support Hospital, Tikrit, Iraq; Keller Army Community Hospital, West Point, NY, USA: 3 United States Air Force Academy Hospital, USAF Academy, CO, USA; 67th Combat Support Hospital, Tikrit, Iraq; Keller Army Community Hospital, West Point, NY, USA; No. of Pages: 2; Language: English; Parent Item: SPHP1980; General Notes: Sports physical therapy section research abstracts: poster presentations.; Publication Type: Article; Material Type: PRINT; Update Code: 20060101; SIRC Article No.: S-970713 KW - *LEG -- Wounds & injuries KW - *FEMUR KW - *STRESS fractures (Orthopedics) KW - *THERAPEUTICS KW - *PHYSICAL therapy KW - *PERIODIC health examinations KW - *DIAGNOSIS KW - TEENAGERS KW - BOYS KW - ARMED Forces KW - CASE REPORT L2 - http://articles.sirc.ca/search.cfm?id=S-970713 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=SPHS-970713&site=ehost-live&scope=site UR - http://articles.sirc.ca/search.cfm?id=S-970713 UR - http://www.apta.org/ DP - EBSCOhost DB - s3h ER - TY - JOUR T1 - SUPERVISED CLINIC-BASED PHYSICAL THERAPY VERSUS HOME EXERCISE IN THE TREATMENT OF ACUTE LATERAL ANKLE SPRAINS. (Abstract) AU - Weishaar, M.D. AU - Moore, J.H. AU - Pendergrass, T.L. AU - Goss, D.L. AU - Slivka, E. AU - Green, R.A. AU - Stoneman, P.D. JO - Journal of Orthopaedic & Sports Physical Therapy JF - Journal of Orthopaedic & Sports Physical Therapy Y1 - 2005/01// VL - 35 IS - 1 SP - S72 EP - S72 CY - ; SN - 01906011 N1 - Accession Number: SPHS-970618; Author: Weishaar, M.D.: 1 Author: Moore, J.H.: 2 Author: Pendergrass, T.L.: 3 Author: Goss, D.L.: 4 Author: Slivka, E.: 5 Author: Green, R.A.: 6 Author: Stoneman, P.D.: 7 ; Author Affiliation: 1 United States Air Force Academy Hospital, USAF Academy, CO, USA; 67th Combat Support Hospital, Tikrit, Iraq; Irrain Army Community Hospital, Fort Riley, KS, USA; Keller Army Community Hospital, West Point, NY, USA: 2 United States Air Force Academy Hospital, USAF Academy, CO, USA; 67th Combat Support Hospital, Tikrit, Iraq; Irrain Army Community Hospital, Fort Riley, KS, USA; Keller Army Community Hospital, West Point, NY, USA: 3 United States Air Force Academy Hospital, USAF Academy, CO, USA; 67th Combat Support Hospital, Tikrit, Iraq; Irrain Army Community Hospital, Fort Riley, KS, USA; Keller Army Community Hospital, West Point, NY, USA: 4 United States Air Force Academy Hospital, USAF Academy, CO, USA; 67th Combat Support Hospital, Tikrit, Iraq; Irrain Army Community Hospital, Fort Riley, KS, USA; Keller Army Community Hospital, West Point, NY, USA: 5 United States Air Force Academy Hospital, USAF Academy, CO, USA; 67th Combat Support Hospital, Tikrit, Iraq; Irrain Army Community Hospital, Fort Riley, KS, USA; Keller Army Community Hospital, West Point, NY, USA: 6 United States Air Force Academy Hospital, USAF Academy, CO, USA; 67th Combat Support Hospital, Tikrit, Iraq; Irrain Army Community Hospital, Fort Riley, KS, USA; Keller Army Community Hospital, West Point, NY, USA: 7 United States Air Force Academy Hospital, USAF Academy, CO, USA; 67th Combat Support Hospital, Tikrit, Iraq; Irrain Army Community Hospital, Fort Riley, KS, USA; Keller Army Community Hospital, West Point, NY, USA; No. of Pages: 1; Language: English; Parent Item: SPHP1980; General Notes: Sports physical therapy section research abstracts: platform presentations.; Publication Type: Article; Material Type: PRINT; Update Code: 20060101; SIRC Article No.: S-970618 KW - *ANKLE -- Wounds & injuries KW - *ANKLE KW - *SPRAINS KW - *PHYSICAL therapy KW - *EXERCISE KW - *THERAPEUTICS KW - HOME care services KW - COMPARATIVE studies KW - MALES KW - ADULTHOOD KW - EFFECTIVENESS L2 - http://articles.sirc.ca/search.cfm?id=S-970618 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=SPHS-970618&site=ehost-live&scope=site UR - http://articles.sirc.ca/search.cfm?id=S-970618 UR - http://www.apta.org/ DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Brungart, Douglas S. AU - Simpson, Brian D. AU - Darwin, Christopher J. AU - Arbogast, Tanya L. AU - Kidd Jr., Gerald T1 - Across-ear interference from parametrically degraded synthetic speech signals in a dichotic cocktail-party listening task. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2005/01// VL - 117 IS - 1 M3 - Article SP - 292 EP - 304 SN - 00014966 AB - Recent results have shown that listeners attending to the quieter of two speech signals in one ear (the target ear) are highly susceptible to interference from normal or time-reversed speech signals presented in the unattended ear. However, speech-shaped noise signals have little impact on the segregation of speech in the opposite ear. This suggests that there is a fundamental difference between the across-ear interference effects of speech and nonspeech signals. In this experiment, the intelligibility and contralateral-ear masking characteristics of three synthetic speech signals with parametrically adjustable speech-like properties were examined: (1) a modulated noise-band (MNB) speech signal composed of fixed-frequency bands of envelope-modulated noise; (2) a modulated sine-band (MSB) speech signal composed of fixed-frequency amplitude-modulated sinewaves; and (3) a “sinewave speech” signal composed of sine waves tracking the first four formants of speech. In all three cases, a systematic decrease in performance in the two-talker target-ear listening task was found as the number of bands in the contralateral speech-like masker increased. These results suggest that speech-like fluctuations in the spectral envelope of a signal play an important role in determining the amount of across-ear interference that a signal will produce in a dichotic cocktail-party listening task. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPEECH KW - INTERFERENCE (Sound) KW - LISTENING KW - EAR KW - HEARING N1 - Accession Number: 20263817; Brungart, Douglas S. 1; Email Address: douglas.brungart@wpafb.af.mil; Simpson, Brian D. 1; Darwin, Christopher J. 2; Arbogast, Tanya L. 3; Kidd Jr., Gerald 3; Affiliations: 1 : Air Force Research Laboratory, AFRL/HECB, 2610 Seventh Street, WPAFB, Ohio 45433; 2 : University of Sussex, Falmer, BN1 9QH, England; 3 : Hearing Research Center, Boston University, 635 Commonwealth Avenue, Boston, Massachusetts 02215; Source Info: Jan2005, Vol. 117 Issue 1, p292; Subject Term: SPEECH; Subject Term: INTERFERENCE (Sound); Subject Term: LISTENING; Subject Term: EAR; Subject Term: HEARING; Number of Pages: 13p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1121/1.1835509 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=20263817&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR AU - Christopher, Leslie A. T1 - The Role of Proton Pump Inhibitors in the Treatment of Heartburn During Pregnancy. JO - Journal of the American Academy of Nurse Practitioners JF - Journal of the American Academy of Nurse Practitioners Y1 - 2005/01// VL - 17 IS - 1 M3 - Article SP - 4 EP - 8 SN - 10412972 AB - Purpose To review the problem of heartburn in gravid women, discuss the present treatment options, and examine the use of proton pump inhibitors (PPIs) as one of the treatment options for moderate to severe heartburn. Data sources Extensive review of worldwide scientific literature on the use and safety of PPIs during pregnancy and heartburn during pregnancy. Conclusions Preliminary information indicates that use of PPIs during pregnancy is safe for both the fetus and the woman and that obstetrical practitioners are using them more frequently. Randomized controlled trials are needed to examine the efficacy of PPIs to treat heartburn during pregnancy, especially as they are compared to histamine2 receptor antagonists. Implications for Practice Heartburn during pregnancy is at risk for being undertreated, given that delivery is the cure. As PPIs are more widely used by women, questions will arise regarding their use in the first trimester as well as throughout pregnancy. This article brings nurse practitioners up to date on the safety of PPIs through the literature review and suggests various treatment options that can be discussed with the patient. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Academy of Nurse Practitioners is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTON pump inhibitors KW - HEARTBURN KW - PREGNANT women KW - INDIGESTION KW - PREGNANCY complications KW - HISTAMINE KW - Gastroesophageal refiux KW - heartburn KW - histamine2 receptor antagonists KW - pregnancy. KW - proton pump inhibitors N1 - Accession Number: 16460235; Christopher, Leslie A. 1,2; Email Address: leslie.christopher@lackland.af.mil.; Source Information: Jan2005, Vol. 17 Issue 1, p4; Subject: PROTON pump inhibitors; Subject: HEARTBURN; Subject: PREGNANT women; Subject: INDIGESTION; Subject: PREGNANCY complications; Subject: HISTAMINE; Author-Supplied Keyword: Gastroesophageal refiux; Author-Supplied Keyword: heartburn; Author-Supplied Keyword: histamine2 receptor antagonists; Author-Supplied Keyword: pregnancy.; Author-Supplied Keyword: proton pump inhibitors; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=16460235&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 106622767 T1 - The role of proton pump inhibitors in the treatment of heartburn during pregnancy. AU - Christopher LA Y1 - 2005/01// N1 - Accession Number: 106622767. Language: English. Entry Date: 20050429. Revision Date: 20150819. Publication Type: Journal Article; tables/charts. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. NLM UID: 8916634. KW - Heartburn -- Drug Therapy -- In Pregnancy KW - Proton Pump Inhibitors -- Therapeutic Use -- In Pregnancy KW - Female KW - Pregnancy KW - Proton Pump Inhibitors -- Adverse Effects -- In Pregnancy SP - 4 EP - 8 JO - Journal of the American Academy of Nurse Practitioners JF - Journal of the American Academy of Nurse Practitioners JA - J AM ACAD NURSE PRACT VL - 17 IS - 1 CY - Malden, Massachusetts PB - Wiley-Blackwell AB - PURPOSE: To review the problem of heartburn in gravid women, discuss the present treatment options, and examine the use of proton pump inhibitors (PPIs) as one of the treatment options for moderate to severe heartburn. DATA SOURCES: Extensive review of worldwide scientific literature on the use and safety of PPIs during pregnancy and heartburn during pregnancy. CONCLUSIONS: Preliminary information indicates that use of PPIs during pregnancy is safe for both the fetus and the woman and that obstetrical practitioners are using them more frequently. Randomized controlled trials are needed to examine the efficacy of PPIs to treat heartburn during pregnancy, especially as they are compared to histamine(2) receptor antagonists. IMPLICATIONS FOR PRACTICE: Heartburn during pregnancy is at risk for being undertreated, given that delivery is the cure. As PPIs are more widely used by women, questions will arise regarding their use in the first trimester as well as throughout pregnancy. This article brings nurse practitioners up to date on the safety of PPIs through the literature review and suggests various treatment options that can be discussed with the patient. SN - 1041-2972 AD - Women's Health Nurse Practitioner, United States Air Force; leslie.christopher@lackland.af.mil U2 - PMID: 15679877. DO - 10.1111/j.1041-2972.2005.00003.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106622767&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Allman, Timothy P. AU - Carlson, Kenneth H. T1 - Expanded Summary: Modeling intentional distribution system Contamination and Detection. JO - Journal: American Water Works Association JF - Journal: American Water Works Association Y1 - 2005/01// VL - 97 IS - 1 M3 - Article SP - 58 EP - 61 SN - 0003150X AB - Summarizes a study based on surveying military drinking water systems in the U.S. for vulnerabilities from natural events as well as enemy attacks or sabotage. Key factors that make the water distribution system easy targets for attacks or sabotage; Role of water back flow in causing illness and death; Overview of literature that recommends research into contaminant detection; Application of the commercial distribution system modeling software to determine the effect of intentional introduction of chemical contaminants. KW - Contamination of drinking water KW - Water pollution KW - Terrorism KW - Sabotage KW - Crimes against public safety KW - United States N1 - Accession Number: 16903359; Allman, Timothy P. 1,2; Email Address: timothy.allmann@wpafb.af.mil; Carlson, Kenneth H. 3; Email Address: kcarlson@engr.colostate.edu; Affiliations: 1: Bioenvironmental Engineer, Air Force Research Laboratory, 2719 12th St., Wright-Patterson AFB, OH 45432; 2: Member, AWWA; 3: Associate Professor, Department of Civil Engineering, Colorado State University, Fort Collins, CO 80523; Issue Info: Jan2005, Vol. 97 Issue 1, p58; Thesaurus Term: Contamination of drinking water; Thesaurus Term: Water pollution; Subject Term: Terrorism; Subject Term: Sabotage; Subject Term: Crimes against public safety; Subject: United States; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=16903359&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - CHAP ID - 2005-09862-001 AN - 2005-09862-001 AU - Gluck, Kevin A. AU - Pew, Richard W. AU - Young, Michael J. ED - Gluck, Kevin A. ED - Pew, Richard W. ED - Gluck, Kevin A., (Ed) ED - Pew, Richard W., (Ed) T1 - Background, Structure, and Preview of the Model Comparison. T2 - Modeling human behavior with integrated cognitive architectures: Comparison, evaluation, and validation. Y1 - 2005/// SP - 3 EP - 12 CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-5047-3 SN - 0-8058-5048-1 N1 - Accession Number: 2005-09862-001. Partial author list: First Author & Affiliation: Gluck, Kevin A.; Air Force Research Laboratory, Mesa, AZ, US. Release Date: 20061113. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-8058-5047-3, Hardcover; 0-8058-5048-1, Paperback. Language: English. Major Descriptor: Artificial Intelligence; Cognitive Processes; Computer Simulation; Military Psychology; Models. Minor Descriptor: Computers; Evaluation; Machine Learning; Performance. Classification: Intelligent Systems (4100); Military Psychology (3800). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 10. AB - The AMBR model comparison involved a series of human performance model evaluations in which the behaviors of computer models were compared to each other and to the behaviors of actual human operators performing the identical tasks. A previous research project with which the AMBR comparison shares a close affinity is the Hybrid Architectures for Learning Project sponsored by ONR in the mid- to late 1990s. Hybrid Architectures was committed to improving our understanding of human learning by funding the development of various cognitive architecture-based and machine learning-based models in three different learning contexts. The modeling goal was 'to run the basic hybrid model on a selected task to verify the model's performance relative to the actual human data and to evolve the model, increasing the match between the learned performances, to obtain a better predictive/explanatory model of the human process.' There were three goals motivating the AMBR model comparison, all of which bear a striking resemblance to the recommendations made by the National Research Council (NRC) Panel on Modeling Human Behavior and Command Decision Making: Goal 1: Advance the State of the Art; Goal 2: Develop Mission-Relevant HBR Models; Goal 3: Make Tasks, Models, and Data comparison. The AMBR model comparison was divided into two experiments, with a different modeling focus in each. The modeling focus for Experiment 1 was multiple task management while the focus of the second experimental comparison was on learning. A summary of the contents of the book is provided at the end of the chapter. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Agent-Based Modeling and Behavior Representation model KW - human performance model evaluations KW - computer models vs actual human operators KW - cognitive architecture-based model KW - machine learning-based model KW - 2005 KW - Artificial Intelligence KW - Cognitive Processes KW - Computer Simulation KW - Military Psychology KW - Models KW - Computers KW - Evaluation KW - Machine Learning KW - Performance KW - 2005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-09862-001&site=ehost-live&scope=site UR - michael.young@wpafb.af.mil UR - pew@bbn.com UR - kevin.gluck@mesa.afmc.af.mil DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2005-09862-006 AN - 2005-09862-006 AU - Eggleston, Robert G. AU - McCreight, Katherine L. AU - Young, Michael J. ED - Gluck, Kevin A. ED - Pew, Richard W. ED - Gluck, Kevin A., (Ed) ED - Pew, Richard W., (Ed) T1 - Distributed Cognition and Situated Behavior. T2 - Modeling human behavior with integrated cognitive architectures: Comparison, evaluation, and validation. Y1 - 2005/// SP - 177 EP - 235 CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-5047-3 SN - 0-8058-5048-1 N1 - Accession Number: 2005-09862-006. Partial author list: First Author & Affiliation: Eggleston, Robert G.; Air Force Research Laboratory, Wright-Patterson AFB, OH, US. Release Date: 20061113. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-8058-5047-3, Hardcover; 0-8058-5048-1, Paperback. Language: English. Major Descriptor: Air Traffic Control; Artificial Intelligence; Cognitive Processes; Computer Simulation; Learning. Minor Descriptor: Behavior; Computer Software; Computers; Models. Classification: Intelligent Systems (4100); Engineering & Environmental Psychology (4000). Location: US. Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 59. AB - Computer simulations of humans and machines interacting in work situations are increasingly being used in a variety of ways. We have recently embarked on a research and development program to address the growing need to improve the ability to rapidly produce human-like software agents that can make intelligent adjustments in the evolving and complex work situation. Our system, known as the Distributed Cognition (DCOG) framework, takes the position that cognitive abilities are distributed throughout the mind. One of the main tenets of the DCOG design philosophy is that cognition is best modeled by a distributed, state change system. This stands in contrast to a classical information-processing metaphor that treats information as distinct from the structural architecture of the mind system. In the information-processing view, information is considered to enter the system and is subsequently processed and transformed to produce the output. In contrast, according to the state change view, mind states give rise to information based on energetic stimulation from other local mind regions and the external environment. Complex adaptive behavior arises from the coordination of a variety of mind regions that operate under local control. In this chapter, we introduce the DCOG research program by describing two related behavioral models that are able to perform complex work in a simulated world. The models were developed as part of the Air Force Research Laboratory's project on Agent-Based Modeling and Human Representation (AMBR). We begin with a general sketch of the DCOG modeling paradigm, which includes a brief discussion of our theory of cognition. The original DCOG model, DCOG-1, is described next. The presentation covers a description of the model components, operation, and performance in a simulated air traffic management work domain. Comments on model behavior, parameters, parameter tuning, and design methods are included. This is followed by a similar discussion of the second model, DCOG-2, that emphasizes associative learning and adaptive learning strategies. We conclude the chapter with a general discussion that contains a brief outline of future research and a summary of basic features of the DCOG models. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - computer simulations KW - human-like software agents KW - Distributed Cognition framework KW - state change system KW - AMBR KW - associative & adaptive learning strategies KW - simulated air traffic control KW - 2005 KW - Air Traffic Control KW - Artificial Intelligence KW - Cognitive Processes KW - Computer Simulation KW - Learning KW - Behavior KW - Computer Software KW - Computers KW - Models KW - 2005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-09862-006&site=ehost-live&scope=site UR - michael.young@wpafb.af.mil UR - nspaceanalysis@earthlink.net UR - robert.eggleston@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2005-09862-008 AN - 2005-09862-008 AU - Diller, David E. AU - Gluck, Kevin A. AU - Tenney, Yvette J. AU - Godfrey, Katherine ED - Gluck, Kevin A. ED - Pew, Richard W. ED - Gluck, Kevin A., (Ed) ED - Pew, Richard W., (Ed) T1 - Comparison, Convergence, and Divergence in Models of Multitasking and Category Learning, and in the Architectures Used to Create Them. T2 - Modeling human behavior with integrated cognitive architectures: Comparison, evaluation, and validation. Y1 - 2005/// SP - 307 EP - 349 CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-5047-3 SN - 0-8058-5048-1 N1 - Accession Number: 2005-09862-008. Partial author list: First Author & Affiliation: Diller, David E.; BBN Technologies, Cambridge, MA, US. Release Date: 20061113. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-8058-5047-3, Hardcover; 0-8058-5048-1, Paperback. Language: English. Major Descriptor: Artificial Intelligence; Cognitive Processes; Computer Simulation; Learning; Models. Minor Descriptor: Behavior; Multitasking. Classification: Intelligent Systems (4100). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 43. AB - This chapter marks the beginning of the final section of the book, in which we develop our conclusions, describe our lessons learned, and define some of the implications for research. This particular chapter assumes some familiarity with the material that has preceded it, and we recommend the reader refer back to those earlier chapters as necessary. We start with the models' ability to fit the observed human data--providing a comparative quantitative evaluation of model performance. We illustrate places where the models produce results similar to one another, as well as where they make their own unique predictions. It is these similarities and differences that help us better understand the processes by which we as humans operate effectively in complex tasks and also contributes to our understanding of the kinds of representations and processes that make such behaviors possible in computational models. We follow the comparison of model fits to human data with a discussion of other dimensions along which one might compare computational process models and some of the challenges associated with comparing along those dimensions. These dimensions include the degrees of freedom available in the architectures and in specific model implementations, model reuse, interpretability, and generalizability. From a focus on model comparison, we turn to a discussion of the similarities and differences among the modeling architectures. The authors of the model description chapters each addressed a set of common questions that were considered to be of broad theoretical and practical significance for those interested in the science of human representation. We draw from our experience with the models and the answers to the common questions to present a summary in both narrative and table formats. We conclude the chapter with a discussion of points of convergence and divergence in the models of multitasking and category learning developed for the AMBR comparison and in the architectures used to create them. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - computational models KW - models of multitasking & category learning KW - modeling architectures KW - human representation KW - Agent-Based Modeling and Behavior Representation comparison KW - 2005 KW - Artificial Intelligence KW - Cognitive Processes KW - Computer Simulation KW - Learning KW - Models KW - Behavior KW - Multitasking KW - 2005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-09862-008&site=ehost-live&scope=site UR - lgpdfrey@bbn.com UR - ytenney@bbn.com UR - kevin.gluck@mesa.afmc.af.mil UR - ddiller@bbn.com DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2005-09862-011 AN - 2005-09862-011 AU - Pew, Richard W. AU - Gluck, Kevin A. AU - Deutsch, Stephen ED - Gluck, Kevin A. ED - Pew, Richard W. ED - Gluck, Kevin A., (Ed) ED - Pew, Richard W., (Ed) T1 - Accomplishments, Challenges, and Future Directions for Human Behavior Representation. T2 - Modeling human behavior with integrated cognitive architectures: Comparison, evaluation, and validation. Y1 - 2005/// SP - 397 EP - 414 CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-5047-3 SN - 0-8058-5048-1 N1 - Accession Number: 2005-09862-011. Partial author list: First Author & Affiliation: Pew, Richard W.; BBN Technologies, Cambridge, MA, US. Release Date: 20061113. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-8058-5047-3, Hardcover; 0-8058-5048-1, Paperback. Language: English. Major Descriptor: Artificial Intelligence; Behavior; Computer Simulation; Military Personnel; Models. Classification: Intelligent Systems (4100); Military Psychology (3800). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 18. AB - In chapter 1 (this volume), Gluck, Pew, and Young describe three goals for the Agent-Based Modeling and Behavior Representation (AMBR) model comparison: (a) to advance the state of the science in human behavior representation (HBR), (b) to develop HBR models that are relevant to the Department of Defense (DoD) mission, and (c) to make all of the research tasks, human behavior models, and human process and outcome data available to the public. As evidence of progress on the first two goals, in this book we have presented an exemplary set of models and the modeling architectures in which they were built. In Experiment 1, the models pushed the frontiers in the representation of multitasking in HBR architectures. In Experiment 2, we stimulated the incorporation of category learning into architectures that previously did not have this capability. These accomplishments are certainly a contribution both to the state of the science and the development of more capable models to meet DoD HBR needs. This book and the accompanying CD represent the accomplishment of Goal 3. Early in the project, we opened a Web site and BBN made available runnable copies of the software supporting the project. On the CD, in addition to the runnable simulation software, we have included data files and material from each model developer documenting their model implementations. Beyond progress toward the primary goals, the project has also confirmed that it is feasible to conduct comparisons among models at this level of complexity on a common problem, and that doing so is a useful way to assess current capabilities and stimulate further advancements and cross-fertilization among proponents of the various architectures and modeling approaches. The comparison paradigm is an effective way to advance the field. In the course of conducting the comparisons, we learned a lot and also identified a number of issues that need to be addressed to enhance the contribution that such comparisons can make. These are addressed in subsequent sections. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - human behavior representation KW - modeling architectures KW - Department of Defense KW - Agent-Based Modeling and Behavior Representation KW - 2005 KW - Artificial Intelligence KW - Behavior KW - Computer Simulation KW - Military Personnel KW - Models KW - 2005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-09862-011&site=ehost-live&scope=site UR - sdeutsch@bbn.com UR - kevin.gluck@mesa.afmc.af.mil UR - pew@bbn.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-00630-001 AN - 2005-00630-001 AU - Wilson, Glenn F. AU - Reis, George A. AU - Tripf, Lloyd D. T1 - EEG Correlates of G-Induced Loss of Consciousness. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2005/01// VL - 76 IS - 1 SP - 19 EP - 27 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Wilson, Glenn F., AFRL/HECP, Wright-Patterson AFB, 2255 H Street, OH, US, 45433-7022 N1 - Accession Number: 2005-00630-001. PMID: 15672982 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Wilson, Glenn F.; Air Force Research Laboratory, Wright-Patterson AFB, OH, US. Release Date: 20050822. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Ability; Consciousness States; Electroencephalography; Gravitational Effects. Classification: Electrophysiology (2530). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 9. Issue Publication Date: Jan, 2005. AB - Introduction: Electroencephalographic (EEG) correlates of Gz-induced loss of consciousness (G-LOC) were examined to better understand the mechanisms of G-LOC. Methods: There were 10 subjects (4 women) who provided 35 G-LOC episodes during which 13 channels of EEG and eye activity were recorded. Subjects simultaneously performed tracking and mathematical tasks prior to and following G-LOC. The performance data and cerebral regional oxygen saturation (rSO₂), as measured using near infrared spectroscopy, were correlated with the EEG changes. Results: Across all subjects, seven EEG events were identified and measured. The two most significant were found over widespread scalp sites. They were a 1-2 Hz waveform just prior to G-LOC and a very large, approximately 1 Hz waveform just prior to regaining consciousness. These were associated with a drop of rSO₂ levels to approximately 90% of the pre-G-LOC baseline levels. rSO₂ levels returned to pre-G-LOC levels within approximately 15 s following G-LOC while EEG and performance measures took approximately 60 s. Discussion: There were two unique EEG waveforms found, one preceding unconsciousness and the other preceding the return to consciousness during G-LOC episodes. Further, the supply of oxygen to the brain was rapidly restored, within approximately 15 s, while the EEG and performance data showed that approximately 60 s were required for the brain to regain functional integrity. The delay in performance and EEG recovery following G-LOC demonstrates that the recovery of brain activity to support cognitive function requires more than just the restoration of normal oxygen levels. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - electroencephalography KW - loss of consciousness KW - g-forces KW - cognitive ability KW - 2005 KW - Cognitive Ability KW - Consciousness States KW - Electroencephalography KW - Gravitational Effects KW - 2005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-00630-001&site=ehost-live&scope=site UR - glenn.wilson@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-00924-004 AN - 2005-00924-004 AU - Day, Eric Anthony AU - Arthur, Winfred Jr. AU - Bell, Suzanne T. AU - Edwards, Bryan D. AU - Bennett, Winston Jr. AU - Mendoza, Jorge L. AU - Tubré, Travis C. T1 - Ability-based pairing strategies in the team-based training of a complex skill: Does the intelligence of your training partner matter? JF - Intelligence JO - Intelligence JA - Intelligence Y1 - 2005/01//Jan-Feb, 2005 VL - 33 IS - 1 SP - 39 EP - 65 CY - Netherlands PB - Elsevier Science SN - 0160-2896 AD - Day, Eric Anthony, Department of Psychology, University of Oklahoma, 455 W. Lindsey, Room 705, Norman, OK, US, 73019-2007 N1 - Accession Number: 2005-00924-004. Partial author list: First Author & Affiliation: Day, Eric Anthony; Department of Psychology, University of Oklahoma, Norman, OK, US. Release Date: 20050214. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Dyads; Intelligence; Skill Learning; Teams. Classification: Personality Traits & Processes (3120). Population: Human (10). Methodology: Literature Review. References Available: Y. Page Count: 27. Issue Publication Date: Jan-Feb, 2005. AB - Intelligence researchers traditionally focus their attention on the individual level and overlook the role of intelligence at the interindividual level. This research investigated the interplay of the effects of intelligence at the individual and interindividual levels by manipulating the intelligence-based composition of dyadic training teams. Using a sample of 176 young adult males and a complex computer-based criterion task, homogeneous and heterogeneous dyadic training teams were created based on intelligence scores, and both team and individual performance were assessed throughout 10 h of training. Results indicated a strong additive influence of intelligence on team performance and a slightly positive nonadditive effect in uniformly high (HH)-ability teams. Trainees' individual skill acquisition was strongly correlated with the performance of their teams. However, nonadditive partner effects were observed such that high-ability trainees acquired significantly more skill when paired with high-ability partners instead of low- ability partners, but low-ability trainees benefited very little from being paired with high-ability partners. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - ability-based pairing KW - team-based training KW - intelligence KW - skill acquisition KW - partners KW - 2005 KW - Dyads KW - Intelligence KW - Skill Learning KW - Teams KW - 2005 DO - 10.1016/j.intell.2004.09.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-00924-004&site=ehost-live&scope=site UR - wea@psyc.tamu.edu UR - eday@ou.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2006-04154-004 AN - 2006-04154-004 AU - Simmons, Catherine A. AU - Lehmann, Peter AU - Cobb, Norman AU - Fowler, Carol R. T1 - Personality profiles of women and men arrested for domestic violence: An analysis of similarities and differences. JF - Journal of Offender Rehabilitation JO - Journal of Offender Rehabilitation JA - J Offender Rehabil Y1 - 2005/// VL - 41 IS - 4 SP - 63 EP - 81 CY - US PB - Haworth Press SN - 1050-9674 SN - 1540-8558 AD - Simmons, Catherine A., 706 Walnut Valley Lane, Cordova, TN, US, 38018 N1 - Accession Number: 2006-04154-004. Other Journal Title: Journal of Offender Counseling, Services & Rehabilitation. Partial author list: First Author & Affiliation: Simmons, Catherine A.; University of Texas, Arlington School of Social Work, TX, US. Other Publishers: Taylor & Francis. Release Date: 20060424. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Domestic Violence; Human Sex Differences; Partner Abuse; Personality Traits. Classification: Behavior Disorders & Antisocial Behavior (3230). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Millon Clinical Multiaxial Inventory--III [Manual Second Edition]. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 19. Issue Publication Date: 2005. AB - Women arrested for intimate partner violence raise challenges for those working in domestic violence programs. Theoretically, there is no agreement about whether women are aggressive for the same reasons as men or merely victims fighting back in an abusive relationship. Practically, there is very little research to guide treatment of this population. In the current exploratory study, Millon Clinical Multiaxial Inventory-III (MCMI-III) personality profiles of 78 females referred by the courts to a domestic violence diversion program were compared to those of a matched sample of 78 males referred by the courts to the same program. Compared with male offenders, women were more likely to demonstrate elevated histrionic, narcissistic, and compulsive personality traits, and less likely to demonstrate dependant personality traits. Additionally, women in this study were more likely to display MCMI-III profiles indicating the presence of personality disorders. Implications of these findings for the treatment setting are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - personality profiles KW - domestic violence diversion program KW - sex differences KW - 2005 KW - Domestic Violence KW - Human Sex Differences KW - Partner Abuse KW - Personality Traits KW - 2005 DO - 10.1300/J076v41n04_03 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-04154-004&site=ehost-live&scope=site UR - cas0558@exchange.uta.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-13444-001 AN - 2005-13444-001 AU - Colle, Herbert A. AU - Reid, Gary B. T1 - Estimating a mental workload redline in a simulated air-to-ground combat mission. JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 2005/// VL - 15 IS - 4 SP - 303 EP - 319 CY - US PB - Lawrence Erlbaum SN - 1050-8414 SN - 1532-7108 AD - Colle, Herbert A., Department of Psychology, Wright State University, Dayton, OH, US, 45435-0001 N1 - Accession Number: 2005-13444-001. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Colle, Herbert A.; Department of Psychology, Wright State University, Dayton, OH, US. Other Publishers: Taylor & Francis. Release Date: 20060117. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aerospace Personnel; Air Force Personnel; Aviation; Combat Experience; Work Load. Minor Descriptor: Ability Level; Aircraft; Evaluation; Human Channel Capacity; Mental Health. Classification: Human Factors Engineering (4010); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Cooper-Harper Scale; Subjective Workload Assessment Technique. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 17. Issue Publication Date: 2005. AB - Mental workload assessments are used as a component of the test and evaluation of aviation systems. To be acceptable, mental workload should not be excessively high. Conceptually, it should be below a critical redline level. Previous research identified 40 ± 10 as a redline range for the Subjective Workload Assessment Technique (SWAT) primarily based on laboratory task batteries (Reid & Colle, 1988). Using an air-to-ground combat task with an objective performance criterion, we estimated a SWAT redline and found it to be within the original recommended range. We discuss implications and limitations of the approach. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - mental workload KW - redline level KW - air to ground combat mission KW - aircrafts KW - aviation systems KW - performance criterion KW - 2005 KW - Aerospace Personnel KW - Air Force Personnel KW - Aviation KW - Combat Experience KW - Work Load KW - Ability Level KW - Aircraft KW - Evaluation KW - Human Channel Capacity KW - Mental Health KW - 2005 DO - 10.1207/s15327108ijap1504_1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-13444-001&site=ehost-live&scope=site UR - collewsu@yahoo.com DP - EBSCOhost DB - psyh ER - TY - BOOK ID - 2005-09862-000 AN - 2005-09862-000 AU - Gluck, Kevin A. AU - Pew, Richard W. ED - Gluck, Kevin A. ED - Pew, Richard W. T1 - Modeling human behavior with integrated cognitive architectures: Comparison, evaluation, and validation. Y1 - 2005/// CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-5047-3 SN - 0-8058-5048-1 N1 - Accession Number: 2005-09862-000. Partial author list: First Author & Affiliation: Gluck, Kevin A.; Air Force Research Laboratory, Mesa, AZ, US. Release Date: 20061113. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. ISBN: 0-8058-5047-3, Hardcover; 0-8058-5048-1, Paperback. Language: English. Major Descriptor: Behavior; Cognitive Science; Computer Simulation; Models; Performance. Minor Descriptor: Artificial Intelligence; Cognitive Processes; Concept Formation; Evaluation; Military Psychology; Statistical Validity. Classification: Intelligent Systems (4100); Military Psychology (3800). Population: Human (10). Location: US. Intended Audience: Psychology: Professional & Research (PS). Supplemental Data: DVD/CD Appended. Page Count: 440. AB - Resulting from the need for greater realism in models of human and organizational behavior in military simulations, there has been increased interest in research on integrative models of human performance, both within the cognitive science community generally, and within the defense and aerospace industries in particular. This book documents accomplishments and lessons learned in a multi-year project to examine the ability of a range of integrated cognitive modeling architectures to explain and predict human behavior in a common task environment that requires multi-tasking and concept learning. This unique project, called the Agent-Based Modeling and Behavior Representation (AMBR) Model Comparison, involved a series of human performance model evaluations in which the processes and performance levels of computational cognitive models were compared to each other and to human operators performing the identical tasks. In addition to quantitative data comparing the performance of the models and real human performance, the book also presents a qualitatively oriented discussion of the practical and scientific considerations that arise in the course of attempting this kind of model development and validation effort. The primary audiences for this book are people in academia, industry, and the military who are interested in explaining and predicting complex human behavior using computational cognitive modeling approaches. The book should be of particular interest to individuals in any sector working in Psychology, Cognitive Science, Artificial Intelligence, Industrial Engineering, System Engineering, Human Factors, Ergonomics and Operations Research. Any technically or scientifically oriented professional or student should find the material fully accessible without extensive mathematical background. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - human behavior modeling KW - integrated cognitive architectures KW - multitask performance KW - Agent-Based Modeling and Behavior Representation Model Comparison KW - ABMR KW - concept learning KW - evaluation KW - validation KW - 2005 KW - Behavior KW - Cognitive Science KW - Computer Simulation KW - Models KW - Performance KW - Artificial Intelligence KW - Cognitive Processes KW - Concept Formation KW - Evaluation KW - Military Psychology KW - Statistical Validity KW - 2005 U1 - Sponsor: Air Force Research Laboratory (AFRL), BBN Technologies. Grant: F33615-99-C-6002. Recipients: No recipient indicated U1 - Sponsor: Soar Technology, George Mason University, US. Grant: F33615-99-C-6005; F33615-01-C-6077. Recipients: No recipient indicated U1 - Sponsor: CHI Systems. Grant: F33615-99-C-6007; F33615-01-C-6078. Recipients: No recipient indicated UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-09862-000&site=ehost-live&scope=site UR - pew@bbn.com UR - kevin.gluck@mesa.afmc.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Welsh, Jeffry S. AU - Mayes, J. Steve AU - Mclaughlin, Richard N. AU - Key, Christopher T. T1 - Comparison of MCT Failure Prediction Techniques and Experimental Verification for Biaxially Loaded Glass Fabric-reinforced Composite Laminates. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2004/12/15/ VL - 38 IS - 24 M3 - Article SP - 2165 EP - 2181 SN - 00219983 AB - The inability to accurately predict the onset of failure in modern fabric-reinforced composite materials has hindered the implementation of these materials into the mainstream applications. Excessive qualification and structural testing must be performed on composite members as a result of uncertainty in the performance of the material, resulting in significantly higher expenses associated with these materials. This situation can only be improved through the rigorous development of both improved failure and material response prediction capabilities and improved experimental verification. The current study addresses these issues, as well as explores recent developments in numerical predictions and experimental techniques. A combined numerical investigation of damage initiation mechanics and experimental verification of predicted results for a woven glass-vinyl ester composite material is performed. More specifically, 18-oz biased (5warp/4fill rovings) plain weave E-glass-vinyl ester laminate with warp rovings oriented in [0/90]s and [0/90/ ±45]s configurations are investigated. Experimental data for the E-glass-vinyl ester [0/90]s laminate is summarized in a two-dimensional biaxial failure envelope. The feasibility of using thickness-tapered cruciform specimens for generating the experimental biaxial test data is also addressed. Finally, numerical predictions of failure of the fabric-reinforced laminate are developed and compared against the experimental failure envelope for the cross-ply laminate. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPOSITE materials KW - ESTERS KW - ORGANIC compounds KW - FINITE element method KW - NUMERICAL analysis KW - biaxial testing KW - failure criterion KW - finite element analysis (FEA) KW - microstructure N1 - Accession Number: 15690413; Welsh, Jeffry S. 1; Email Address: Jeffry.Welsh@kirtland.af.mil; Mayes, J. Steve 2; Mclaughlin, Richard N. 2; Key, Christopher T. 3; Source Information: 2004, Vol. 38 Issue 24, p2165; Subject: COMPOSITE materials; Subject: ESTERS; Subject: ORGANIC compounds; Subject: FINITE element method; Subject: NUMERICAL analysis; Author-Supplied Keyword: biaxial testing; Author-Supplied Keyword: failure criterion; Author-Supplied Keyword: finite element analysis (FEA); Author-Supplied Keyword: microstructure; Number of Pages: 17p; Illustrations: 7 Black and White Photographs, 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1177/0021998304045589 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=15690413&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Brautigam, D. H. AU - Ray, K. P. AU - Ginet, G. P. AU - Madden, D. T1 - Specification of the Radiation Belt Slot Region: Comparison of the NASA AE8 Model With TSX5/CEASE Data. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2004/12/02/Dec2004 Part 2 of 3 VL - 51 IS - 6 M3 - Article SP - 3375 EP - 3380 SN - 00189499 AB - The NASA AE8 models are compared with 4 years of CEASE data from the TSX-5 satellite, with a focus on the radiation belt slot region. The current 4 years of the TSX5 mission is divided into solar cycle phase, with CEASE models developed for the solar maximum and declining phases. It is found that the AES models predict slot fluxes that are orders of magnitude less than that observed by TSX5/CEASE. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Radiation KW - Solar activity KW - Magnitude estimation KW - Solar cycle KW - Aeronautics -- United States KW - United States N1 - Accession Number: 15591528; Brautigam, D. H. 1; Email Address: Donald.Brautigam@hanscom.af.mil; Ray, K. P. 1; Email Address: Kevin.Ray2@hanscom.af.mil; Ginet, G. P. 1; Email Address: Gregory.Ginet@hanscom.af.mil; Madden, D. 2; Email Address: Dan.Madden@hanscom.af.mil; Affiliations: 1: Air Force Research Laboratory, Hanscom AFB, MA 01731 USA; 2: Institute of Scientific Research, Boston College, Boston, MA 02467 USA; Issue Info: Dec2004 Part 2 of 3, Vol. 51 Issue 6, p3375; Thesaurus Term: Radiation; Thesaurus Term: Solar activity; Subject Term: Magnitude estimation; Subject Term: Solar cycle; Subject Term: Aeronautics -- United States; Subject: United States; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TNS.2004.840024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=15591528&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Krause, Linda Habash AU - Cooke, David L. AU - Enloe, C. Lon AU - Font, Gabriel I. AU - McHarg, M. Geoff AU - Putz, Victor AU - Ray, Kevin P. AU - Toth Jr., Michael J. T1 - Survey of DSCS-III B-7 Differential Surface Charging. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2004/12/02/Dec2004 Part 2 of 3 VL - 51 IS - 6 M3 - Article SP - 3399 EP - 3407 SN - 00189499 AB - An analysis of differential charging between dielectric surface materials and the frame of a DSCS-III geosynchronous spacecraft is presented. Charging levels measured by surface potential monitors (SPMs) covered with samples of Kapton and Astroquartz have been recorded for one half of a solar cycle. Both seasonal and solar cycle effects are seen in the daily peak levels of the SPM voltages, with local maxima occurring near the equinoxes and a general trend increasing as solar max is approached. Charge neutralization by an onboard Xe plasma contactor was demonstrated to be effective throughout the mission, with a mean voltage reduction of 86% for Astroquartz and 74% for Kapton. Though a statistical analysis shows a general correlation between the fluence of charging electrons with SPM voltages, the event-specific correlation contains enough variance to cast doubt on the usefulness of an electron sensor as a differential charging alarm. We have found that a Kapton-covered SPM may be better suited than an electron sensor as a differential charging alarm. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Solar activity KW - Particles (Nuclear physics) KW - Dielectrics KW - Geostationary satellites KW - Electrons KW - Solar cycle N1 - Accession Number: 15591532; Krause, Linda Habash 1; Email Address: Linda.Krause@usafa.af.mil; Cooke, David L. 2; Enloe, C. Lon 1; Font, Gabriel I. 1; McHarg, M. Geoff 1; Putz, Victor 1; Ray, Kevin P. 2; Toth Jr., Michael J. 1; Affiliations: 1: Department of Physics, U.S. Air Force Academy, CO 80840 USA; 2: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA 07131.; Issue Info: Dec2004 Part 2 of 3, Vol. 51 Issue 6, p3399; Thesaurus Term: Solar activity; Subject Term: Particles (Nuclear physics); Subject Term: Dielectrics; Subject Term: Geostationary satellites; Subject Term: Electrons; Subject Term: Solar cycle; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TNS.2004.840838 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=15591532&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Jumper, John P. AU - Stirrup, Jock T1 - Foreword. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2004///Winter2004 Y1 - 2004///Winter2004 VL - 18 IS - 4 M3 - Article SP - 4 EP - 5 PB - Superintendent of Documents SN - 1555385X AB - The article informs that last year Great Britain's Royal Air Force (RAF) and the U.S. Air Force were once again side by side over the skies of Iraq. During 21 days of combat, RAF demonstrated the power of organized and integrated air and space forces in joint and coalition warfare. RAF did not do it alone, but it contributed more than its fair share to enable the rapid success of ground forces. At the same time, RAF was able to join with special operations forces, air and land, to keep activity in western Iraq from interfering with the main effort. RAF is far from having this right, but it did make tremendous progress during the dust storm in Operation Iraqi Freedom, where traditional stand-alone platforms, manned, unmanned, and space, were lashed together in a real-time network that located and destroyed Iraqi forces moving to reinforce depleted Republican Guard divisions. KW - UNIFIED operations (Military science) KW - IRAQ War, 2003-2011 KW - UNITED States. Air Force KW - GREAT Britain. Royal Air Force KW - GREAT Britain KW - UNITED States N1 - Accession Number: 15258535; Source Information: Winter2004, Vol. 18 Issue 4, p4; Subject Term: UNIFIED operations (Military science); Subject Term: IRAQ War, 2003-2011; Subject Term: UNITED States. Air Force; Subject Term: GREAT Britain. Royal Air Force; Subject Term: ; Geographic Subject: GREAT Britain; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 2p; ; Illustrations: 2 Black and White Photographs; ; Document Type: Article; ; Full Text Word Count: 544; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=15258535&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Atkins, Sean T1 - Unwanted Allies: What Influences Negative Domestic Reactions to Deploying Forces into Allied States? JO - Air Power History JF - Air Power History Y1 - 2004///Winter2004 VL - 51 IS - 4 M3 - Article SP - 40 EP - 51 SN - 1044016X AB - Analysis of the British domestic reaction to the placement of American cruise missiles in the United Kingdom during the early 1980's illuminates several factors that influence indigenous reaction to the presence of allied foreign armed forces on domestic soil. These dynamics include the perceived danger to the host state, the nature of the alliance, the nature of the allied force, and how coercive the placement is. The 1979 NATO decision to base US cruise missiles in the United Kingdom as a deterrent to Soviet nuclear attack, for example, was met with widespread mass demonstrations and parliamentary opposition, primarily due to the perceived unreliability of the missiles and base security, resentment of American leadership of the nuclear launch process specifically and NATO generally, and the public availability of sites for protest. KW - DEPLOYMENT (Military strategy) KW - UNITED States -- Military relations KW - GREAT Britain -- Military relations KW - GUIDED missiles KW - CRUISE missiles KW - DEMONSTRATIONS (Collective behavior) KW - MILITARY bases KW - GREAT Britain KW - UNITED States KW - NORTH Atlantic Treaty Organization N1 - Accession Number: 15355622; Atkins, Sean 1; Affiliations: 1 : Lieutenant in the United States Air Force; Source Info: Winter2004, Vol. 51 Issue 4, p40; Note: Based on newspapers, House of Commons debates, pamphlets, fliers and posters, interviews, and other primary and secondary sources; 3 photos, 2 reproductions, 124 notes.; Historical Period: 1979 to 1983; Subject Term: DEPLOYMENT (Military strategy); Subject Term: UNITED States -- Military relations; Subject Term: GREAT Britain -- Military relations; Subject Term: GUIDED missiles; Subject Term: CRUISE missiles; Subject Term: DEMONSTRATIONS (Collective behavior); Subject Term: MILITARY bases; Subject: GREAT Britain; Subject: UNITED States; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hia&AN=15355622&site=ehost-live&scope=site DP - EBSCOhost DB - hia ER - TY - JOUR AU - McDevitt, Edward R. AU - Taylor, Dean C. AU - Miller, Mark D. AU - Gerber, John P. AU - Ziemke, Gregg AU - Hinkin, Daniel AU - Uhorchak, John M. AU - Arciero, Robert A. AU - Pierre, Patrick St. T1 - Functional Bracing After Anterior Cruciate Ligament Reconstruction: A Prospective, Randomized, Multicenter Study. JO - American Journal of Sports Medicine JF - American Journal of Sports Medicine Y1 - 2004/12// VL - 32 IS - 8 M3 - Article SP - 1887 EP - 1892 SN - 03635465 AB - Background: Bracing after anterior cruciate ligament reconstruction is expensive and is not proven to prevent injuries or influence outcomes. Purpose: To determine whether postoperative functional knee bracing influences outcomes. Study Design: Prospective, randomized, multicenter clinical trial. Methods: One hundred volunteers from the 3 US service academies with acute anterior cruciate ligament tears were randomized into braced or nonbraced groups. Only those subjects with anterior cruciate ligament tears treated surgically within the first 8 weeks of injury were included. Patients with chondral injuries, significant meniscal tears, or multiple knee ligament injuries were excluded. Surgical procedures and the postoperative physical therapy protocols were identical for both groups. The braced group was instructed to wear an off-the-shelf functional knee brace for all cuffing, pivoting, or jumping activities for the first year after surgery. Results: Ninety-five subjects were available with a minimum 2-year follow-up. There were no statistically significant differences between groups in knee stability, functional testing with the single-legged hop test, International Knee Documentation Committee scores, Lysholm scores, knee range of motion, or isokinetic strength testing. Two braced subjects had reinjuries, and 3 nonbraced subjects had reinjuries. Conclusions: In this young, active population, postoperative bracing does not appear to change the clinical outcomes after anterior cruciate ligament reconstruction. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Sports Medicine is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRUCIATE ligaments KW - JOINTS (Anatomy) KW - STIFLE joint KW - ANTERIOR cruciate ligament KW - LIGAMENTS KW - CLINICAL medicine KW - anterior cruciate ligament (ACL) KW - functional bracing KW - knee braces KW - knee reconstruction KW - postoperative bracing N1 - Accession Number: 15252457; McDevitt, Edward R. 1; Taylor, Dean C. 1,2; Email Address: dean.taylor@na.amedd.army.mil; Miller, Mark D. 3; Gerber, John P. 2; Ziemke, Gregg 1; Hinkin, Daniel 4; Uhorchak, John M. 2; Arciero, Robert A. 2; Pierre, Patrick St. 2; Source Information: Dec2004, Vol. 32 Issue 8, p1887; Subject: CRUCIATE ligaments; Subject: JOINTS (Anatomy); Subject: STIFLE joint; Subject: ANTERIOR cruciate ligament; Subject: LIGAMENTS; Subject: CLINICAL medicine; Author-Supplied Keyword: anterior cruciate ligament (ACL); Author-Supplied Keyword: functional bracing; Author-Supplied Keyword: knee braces; Author-Supplied Keyword: knee reconstruction; Author-Supplied Keyword: postoperative bracing; Number of Pages: 6p; Document Type: Article L3 - 10.1177/0363546504265998 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=15252457&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Herzinger, Kurt AU - Sanford, Ryan T1 - Minimal Generating Sets for Relative Ideals in Numerical Semigroups of Multiplicity Eight#. JO - Communications in Algebra JF - Communications in Algebra J1 - Communications in Algebra PY - 2004/12// Y1 - 2004/12// VL - 32 IS - 12 M3 - Article SP - 4713 EP - 4731 SN - 00927872 AB - Let S be a numerical semigroup and let I be a relative ideal of S. Let S − I denote the dual of I and letμS(⋅) represent the size of a minimal generating set. We investigate the inequalityμS(I)μS(S − I) ≥ μS(I + (S − I)) under the assumption that S has multiplicity 8. We will show that if I is non-principal, then the strict inequalityμS(I)μS(S − I) > μS(I + (S − I)) always holds. [ABSTRACT FROM AUTHOR] AB - Copyright of Communications in Algebra is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMIGROUPS (Algebra) KW - GROUP theory KW - MULTIPLICITY (Mathematics) KW - LOCAL rings (Algebra) KW - SET theory KW - ALGEBRA N1 - Accession Number: 15399516; Source Information: Dec2004, Vol. 32 Issue 12, p4713; Subject Term: SEMIGROUPS (Algebra); Subject Term: GROUP theory; Subject Term: MULTIPLICITY (Mathematics); Subject Term: LOCAL rings (Algebra); Subject Term: SET theory; Subject Term: ALGEBRA; Subject Term: ; Number of Pages: 19p; ; Document Type: Article; L3 - 10.1081/AGB-200036841 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=15399516&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kienk, Kaci AU - Snow, Jamie AU - Morgan, Katrina AU - Bowen, Richard AU - Stephens, Michael AU - Foster, Falicia AU - Gordy, Paul AU - Beckett, Susan AU - Komar, Nicholas AU - Gubler, Duane AU - Bunning, Michel T1 - Alligators as West Nile Virus Amplifiers. JO - Emerging Infectious Diseases JF - Emerging Infectious Diseases Y1 - 2004/12// VL - 10 IS - 12 M3 - Article SP - 2150 EP - 2155 PB - Centers for Disease Control & Prevention (CDC) SN - 10806040 AB - Recent evidence suggests that American alligators (Alligator mississippiensis) may be capable of transmitting West Nile virus (WNV) to other alligators. We experimentally exposed 24 juvenile alligators to WNV parenterally or orally. All became infected, and all but three sustained viremia titers >5.0 log10 PFU/mL (a threshold considered infectious for Culex quinquefasciatus mosquitoes) for 1 to 8 days. Noninoculated tankmates also became infected. The viremia profiles and multiple routes of infection suggest alligators may play an important role in WNV transmission in areas with high population densities of juvenile alligators. [ABSTRACT FROM AUTHOR] AB - Copyright of Emerging Infectious Diseases is the property of Centers for Disease Control & Prevention (CDC) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - West Nile virus KW - Flaviviruses KW - Communicable diseases -- Transmission KW - Zoonoses KW - American alligator N1 - Accession Number: 15279236; Kienk, Kaci 1; Email Address: kaci.klenk@aphis.usda.gov; Snow, Jamie 1; Morgan, Katrina 1; Bowen, Richard 2; Stephens, Michael 1; Foster, Falicia 1; Gordy, Paul; Beckett, Susan 1; Komar, Nicholas 1; Gubler, Duane 1; Bunning, Michel 1,3; Affiliations: 1: Centers for Disease Control and Prevention, Fort Collins, Colorado, USA; 2: Colorado State University, Fort Collins, Colorado, USA; 3: United States Air Force, Washington, DC, USA; Issue Info: Dec2004, Vol. 10 Issue 12, p2150; Thesaurus Term: West Nile virus; Thesaurus Term: Flaviviruses; Thesaurus Term: Communicable diseases -- Transmission; Thesaurus Term: Zoonoses; Subject Term: American alligator; Number of Pages: 6p; Illustrations: 1 Chart, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=15279236&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Westerfeld, David AU - Suchalkin, Sergey AU - Kaspi, Ron AU - Ongstad, Andrew P. AU - Belenky, Gregory L. T1 - Absorption and Single-Pass Gain Measurements in Optically Pumped Type-Il Midinfrared Laser Structures. JO - IEEE Journal of Quantum Electronics JF - IEEE Journal of Quantum Electronics J1 - IEEE Journal of Quantum Electronics PY - 2004/12// Y1 - 2004/12// VL - 40 IS - 12 M3 - Article SP - 1657 EP - 1662 SN - 00189197 AB - A single-pass method was employed to measure the gain and absorption in optically pumped midinfrared type-II semiconductor lasers. The technique requires minimal sample processing and allows a single sample to be used for both absorption and gain measurements. The gain measurements confirm previous observations that the differential gain of these structures drops off rapidly with increasing temperature. A comparison of absorption in samples with differing waveguide designs was used to estimate the effective index step between the core and cladding. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Journal of Quantum Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR lasers KW - WAVEGUIDES KW - ABSORPTION KW - LASERS KW - ELECTRIC waves KW - TEMPERATURE N1 - Accession Number: 15252229; Source Information: Dec2004, Vol. 40 Issue 12, p1657; Subject Term: SEMICONDUCTOR lasers; Subject Term: WAVEGUIDES; Subject Term: ABSORPTION; Subject Term: LASERS; Subject Term: ELECTRIC waves; Subject Term: TEMPERATURE; Subject Term: ; Number of Pages: 6p; ; Document Type: Article; L3 - 10.1109/JQE.2004.837345 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=15252229&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Tzu-Yen Chang AU - Xu Wang AU - Evans, David A. AU - Roberson, S. L. AU - Zheng, Jim P. T1 - Characterization of Tantalum Oxide Ruthenium Oxide Hybrid Capacitors. JO - IEEE Transactions on Industrial Electronics JF - IEEE Transactions on Industrial Electronics Y1 - 2004/12// VL - 51 IS - 6 M3 - Article SP - 1313 EP - 1317 SN - 02780046 AB - The ac and dc performance and leakage current of Evans tantalum oxide-ruthenium oxide hybrid capacitors were characterized at room temperature. The RC time constants were in the range from 2 to 0.45 ms and dependent on the maximum operational voltage of the capacitor. The gravimetric and volumetric energy densities of hybrid capacitors were in the range of 0.074-0.233 J/g and 0.388-1.384 J/cm³, respectively. The gravimetric and volumetric power densities of hybrid capacitors were in the range of 19-259 W/g and 100-1540 W/cm³, respectively. A comparison of the performance between hybrid capacitors to conventional aluminum and tantalum electrolytic capacitors is made in this paper. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Industrial Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CAPACITORS KW - TANTALUM oxide KW - RUTHENIUM KW - DIELECTRIC devices KW - VOLUMETRIC analysis KW - GRAVIMETRIC analysis N1 - Accession Number: 15252537; Tzu-Yen Chang 1; Email Address: zheng@eng.fsu.edu; Xu Wang 2,3; Evans, David A. 4; Roberson, S. L. 5; Zheng, Jim P. 2,3; Affiliations: 1: AU Optronics Corporation, Hsinchu 300, Taiwan, R.O.C.; 2: Department of Electrical and Computer Engineering, Florida A&M University.; 3: Florida State University, Tallahassee, FL 32310 USA.; 4: Evans Capacitor Company, East Providence, RI 02914 USA.; 5: Air Force Research Laboratory, Eglin AFB, FL 32542 USA.; Issue Info: Dec2004, Vol. 51 Issue 6, p1313; Subject Term: CAPACITORS; Subject Term: TANTALUM oxide; Subject Term: RUTHENIUM; Subject Term: DIELECTRIC devices; Subject Term: VOLUMETRIC analysis; Subject Term: GRAVIMETRIC analysis; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TIE.2004.837900 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=15252537&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Sternberg, Natalia AU - Poggie, Jonathan T1 - Plasma-Sheath Transition in the Magnetized Plasma-Wall Problem for Collisionless Ions. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/12// VL - 32 IS - 6 M3 - Article SP - 2217 EP - 2226 SN - 00933813 AB - A model for the collisionless plasma-wall problem under the action of an applied magnetic field is developed. The behavior of its solution is examined and found to be qualitatively consistent with experiment. The plasma and the sheath are then modeled separately to obtain the position of the quasi-neutral plasma boundary and the position of the edge of the electron-free sheath. It is shown that the plasma boundary can be specified as the point where the component of the ion velocity normal to the wall reaches the ion sound speed (Bohm criterion), and the sheath edge is specified as the point corresponding to Godyak's condition for the electric field. Studying the behavior near the plasma boundary and the sheath edge, the plasma solution and the solution of the space charge region are patched together to approximate the solution of the plasma-wall problem. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLISIONLESS plasmas KW - IONS KW - MAGNETIC fields KW - ELECTRIC fields KW - ELECTROMAGNETIC fields KW - ELECTRON accelerators KW - magnetized quasi-neutral plasma KW - magnetized sheath KW - Manetized plasma-wall problem KW - patching KW - quasi-neutral plasma boundary KW - sheath edge N1 - Accession Number: 15462808; Sternberg, Natalia 1; Poggie, Jonathan 2; Affiliations: 1: Department of Mathematics and Computer Science, Clark University, Worcester MA 01610 USA.; 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433 USA.; Issue Info: Dec2004, Vol. 32 Issue 6, p2217; Subject Term: COLLISIONLESS plasmas; Subject Term: IONS; Subject Term: MAGNETIC fields; Subject Term: ELECTRIC fields; Subject Term: ELECTROMAGNETIC fields; Subject Term: ELECTRON accelerators; Author-Supplied Keyword: magnetized quasi-neutral plasma; Author-Supplied Keyword: magnetized sheath; Author-Supplied Keyword: Manetized plasma-wall problem; Author-Supplied Keyword: patching; Author-Supplied Keyword: quasi-neutral plasma boundary; Author-Supplied Keyword: sheath edge; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TPS.2004.838687 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=15462808&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Lemmer, John F. AU - Gossink, Don E. T1 - Recursive Noisy OR--A Rule for Estimating Complex Probabilistic Interactions. JO - IEEE Transactions on Systems, Man & Cybernetics: Part B JF - IEEE Transactions on Systems, Man & Cybernetics: Part B J1 - IEEE Transactions on Systems, Man & Cybernetics: Part B PY - 2004/12// Y1 - 2004/12// VL - 34 IS - 6 M3 - Article SP - 2252 EP - 2261 SN - 10834419 AB - This paper focuses on approaches that address the intractability of knowledge acquisition of conditional probability tables in causal or Bayesian belief networks. We state a rule that we term the "recursive noisy OR" (RNOR) which allows combinations of dependent causes to be entered and later used for estimating the probability of an effect. In the development of this paper, we investigate the axiomatic correctness and semantic meaning of this nile and show that the recursive noisy OR is a generalization of the well-known noisy OR. We introduce the concept of positive causality and demonstrate its utility in axiomatic correctness of the RNOR. We also introduce concepts describing the ways in which dependent causes can work together as being either "synergistic" or "interfering." We provide a formalization to quantify these concepts and show that they are presented by the RNOR. Finally, we present a method for the determination of Conditional Probability Tables from this causal theory. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Systems, Man & Cybernetics: Part B is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROBABILITY theory KW - PERMUTATIONS KW - BAYESIAN analysis KW - RECURSIVE functions KW - COMBINATIONS (Mathematics) KW - NUMERICAL analysis N1 - Accession Number: 15261449; Source Information: Dec2004, Vol. 34 Issue 6, p2252; Subject Term: PROBABILITY theory; Subject Term: PERMUTATIONS; Subject Term: BAYESIAN analysis; Subject Term: RECURSIVE functions; Subject Term: COMBINATIONS (Mathematics); Subject Term: NUMERICAL analysis; Subject Term: ; Number of Pages: 10p; ; Document Type: Article; L3 - 10.1109/TSMCB.2004.834424 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=15261449&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - William D. Casebeer T1 - Knowing Evil When You See It: Uses for the Rhetoric of Evil in International Relations . JO - International Relations JF - International Relations Y1 - 2004/12// VL - 18 IS - 4 M3 - Article SP - 441 EP - 451 SN - 00471178 AB - The rhetoric of evil has been a mainstay in international affairs, although President Bushs use of the phrase axis of evil has elevated its prominence. Few, however, have attempted an analytically defensible definition of evil as it relates to international events. I attempt this, identifying commonalities that unite historical deployment of the term: an evaluation of evil cuts across the traditional ethical axes of evaluation of person (virtue theory), nature of action (deontology), and consequence (utilitarianism). This analysis will help identify possible roles that the concept of evil plays in our international linguistic economy and what purposes it serves. I briefly discuss these roles (motivational, counterforce, divisional, and evaluational). Clarifying the meaning of the term evil and its usage in global political discourse will highlight the pitfalls that accompany the use of such rhetoric in international relations, which include forestalling possibilities of redemptive reform. [ABSTRACT FROM AUTHOR] AB - Copyright of International Relations is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - International relations KW - World politics KW - Duty KW - Virtue KW - Utilitarianism N1 - Accession Number: 18554558; William D. Casebeer 1; Affiliations: 1: US Air Force Academy, Colorado, USA; Issue Info: Dec2004, Vol. 18 Issue 4, p441; Subject Term: International relations; Subject Term: World politics; Subject Term: Duty; Subject Term: Virtue; Subject Term: Utilitarianism; NAICS/Industry Codes: 928120 International Affairs; NAICS/Industry Codes: 911410 Foreign affairs; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=18554558&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Cohen, Kelly AU - Siegel, Stefan AU - Wetlesen, Dave AU - Cameron, Jeff AU - Sick, Aaron T1 - Effective Sensor Placements for the Estimation of Proper Orthogonal Decomposition Mode Coefficients in von Kármán Vortex Street. JO - Journal of Vibration & Control JF - Journal of Vibration & Control Y1 - 2004/12// VL - 10 IS - 12 M3 - Article SP - 1857 EP - 1880 SN - 10775463 AB - For feedback control using low-dimensional proper orthogonal decomposition (POD) models, the mode amplitudes of the POD mode coefficients need to be estimated based on sensor readings. This paper is aimed at suppressing the von Kármán vortex street in the wake of a circular cylinder using a low- dimensional approach based on POD. We compare sensor placement methods based on the spatial distribution of the POD modes to arbitrary ad hoc methods. Flow field data were obtained from Navier-Stokes simulation as well as particle image velocimetry (PIV) measurements. A low-dimensional POD was applied to the snapshot ensembles from the experiment and simulation. Linear stochastic estimation was used to map the sensor readings of the velocity field on the POD mode coefficients. We studied 53 sensor placement configurations, 32 of which were based on POD eigenfunctions and the others using ad hoc methods. The effectiveness of the sensor configurations was investigated at Re = 100 for the computational fluid dynamic data, and for a Reynolds number range of 82-99 for the water tunnel PIV data. Results show that a five-sensor configuration can keep the root mean square estimation error, for the amplitudes of the first two modes to within 4% for simulation data and within 10% for the PIV data. This level of error is acceptable for a moderately robust controller. The POD-based design was found to be simpler, more effective, and robust compared to the ad hoc methods examined. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Vibration & Control is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FEEDBACK control systems KW - AUTOMATIC control KW - ORTHOGONAL decompositions KW - REYNOLDS number KW - DECOMPOSITION (Mathematics) KW - Flow control KW - linear stochastic estimation KW - proper orthogonal decomposition KW - sensor placement and number N1 - Accession Number: 15690441; Cohen, Kelly 1; Email Address: YonaKelly1@aol.com; Siegel, Stefan 1; Wetlesen, Dave 1; Cameron, Jeff 1; Sick, Aaron 1; Source Information: Dec2004, Vol. 10 Issue 12, p1857; Subject: FEEDBACK control systems; Subject: AUTOMATIC control; Subject: ORTHOGONAL decompositions; Subject: REYNOLDS number; Subject: DECOMPOSITION (Mathematics); Author-Supplied Keyword: Flow control; Author-Supplied Keyword: linear stochastic estimation; Author-Supplied Keyword: proper orthogonal decomposition; Author-Supplied Keyword: sensor placement and number; Number of Pages: 24p; Illustrations: 1 Black and White Photograph, 5 Diagrams, 4 Charts, 8 Graphs; Document Type: Article L3 - 10.1177/1077546304046035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=15690441&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 106605888 T1 - College coaches corner. Learning from each other: training the trunk. AU - Hedrick A AU - Rogers R AU - Bennett S Y1 - 2004/12// N1 - Accession Number: 106605888. Language: English. Entry Date: 20050415. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Muscle Strengthening KW - Torso KW - Athletic Training SP - 70 EP - 71 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 26 IS - 6 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. AB - Experience has taught us that training the trunk is as important, if not more important, than training the other major muscle groups when the goal is improved athletic performance. With this in mind we asked our panel of coaches how they approach trunk training with their athletes. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106605888&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Learning From Each Other: Training the Trunk. AU - Hedrick, Allen JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) Y1 - 2004/12// VL - 26 IS - 6 SP - 70 EP - 71 SN - 15241602 N1 - Accession Number: 15362865; Author: Hedrick, Allen: 1 email: ARHedrick@Adelphia.net. ; Author Affiliation: 1 United States Air Force Academy, Colorado Springs, Colorado; No. of Pages: 2; Language: English; Publication Type: Article; Update Code: 20041215 N2 - Experience has taught us that training the trunk is as important, if not more important, than training the other major muscle groups when the goal is improved athletic performance. With this in mind we asked our panel of coaches how they approach trunk training with their athletes. ABSTRACT FROM AUTHOR KW - *THORACIC vertebrae KW - *MUSCLES KW - *PHYSICAL fitness KW - *MUSCLE strength KW - *ATHLETES UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=15362865&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 2005-01128-005 AN - 2005-01128-005 AU - Repperger, D. W. T1 - Adaptive Displays and Controllers Using Alternative Feedback. T3 - Adaptive Displays JF - CyberPsychology & Behavior JO - CyberPsychology & Behavior JA - Cyberpsychol Behav Y1 - 2004/12// VL - 7 IS - 6 SP - 645 EP - 652 CY - US PB - Mary Ann Liebert, Inc. SN - 1094-9313 AD - Repperger, D. W., Air Force Research Laboratory, Wright-Patterson Air Force Base, Building 33, AFRL/HECP, Dayton, OH, US, 45433-7022 N1 - Accession Number: 2005-01128-005. PMID: 15687798 Other Journal Title: Cyberpsychology, Behavior, and Social Networking; Journal of Cybertherapy and Rehabilitation. Partial author list: First Author & Affiliation: Repperger, D. W.; Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, US. Other Publishers: Virtual Reality Medical Institute BVBA. Release Date: 20050207. Correction Date: 20140519. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cutaneous Sense; Feedback; Human Computer Interaction; Human Machine Systems Design; Visual Displays. Classification: Human Factors Engineering (4010). Population: Human (10). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 8. Issue Publication Date: Dec, 2004. AB - Investigations on the design of haptic (force reflecting joystick or force display) controllers were conducted by viewing the display of force information within the context of several different paradigms. First, using analogies from electrical and mechanical systems, certain schemes of the haptic interface were hypothesized which may improve the human-machine interaction with respect to various criteria. A discussion is given on how this interaction benefits the electrical and mechanical system. To generalize this concept to the design of human-machine interfaces, three studies with haptic mechanisms were then synthesized and analyzed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - haptic controllers KW - adaptive displays KW - human-machine systems design KW - feedback KW - human-machine interfaces KW - 2004 KW - Cutaneous Sense KW - Feedback KW - Human Computer Interaction KW - Human Machine Systems Design KW - Visual Displays KW - 2004 DO - 10.1089/cpb.2004.7.645 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-01128-005&site=ehost-live&scope=site UR - Daniel.Repperger@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Sinha, Amanda E. AU - Hope, Janiece L. AU - Prazen, Bryan J. AU - Fraga, Carlos G. AU - Nilsson, Erik J. AU - Synovec, Robert E. T1 - Multivariate selectivity as a metric for evaluating comprehensive two-dimensional gas chromatography–time-of-flight mass spectrometry subjected to chemometric peak deconvolution JO - Journal of Chromatography A JF - Journal of Chromatography A Y1 - 2004/11/12/ VL - 1056 IS - 1/2 M3 - Article SP - 145 EP - 154 SN - 00219673 AB - Two-dimensional gas chromatography (GC × GC) coupled to time-of-flight mass spectrometry (TOFMS) [GC × GC–TOFMS)] is a highly selective technique well suited to analyzing complex mixtures. The data generated is information-rich, making it applicable to multivariate quantitative analysis and pattern recognition. One separation on a GC × GC–TOFMS provides retention times on two chromatographic columns and a complete mass spectrum for each component within the mixture. In this report, we demonstrate how GC × GC–TOFMS combined with trilinear chemometric techniques, specifically parallel factor analysis (PARAFAC) initiated by trilinear decomposition (TLD), results in a powerful analytical methodology for multivariate deconvolution. Using PARAFAC, partially resolved components in complex mixtures can be deconvoluted and identified without requiring a standard data set, signal shape assumptions or any fully selective mass signals. A set of four isomers (iso-butyl, sec-butyl, tert-butyl, and n-butyl benzenes) is used to investigate the practical limitations of PARAFAC for the deconvolution of isomers at varying degrees of chromatographic resolution and mass spectral selectivity. In this report, multivariate selectivity was tested as a metric for evaluating GC × GC–TOFMS data that is subjected to PARAFAC peak deconvolution. It was found that deconvolution results were best with multivariate selectivities over 0.18. Furthermore, the application of GC × GC–TOFMS followed by TLD/PARAFAC is demonstrated for a plant metabolite sample. A region of GC × GC–TOFMS data from a complex natural sample of a derivatized metabolic plant extract from Huilmo (Sisyrinchium striatum) was analyzed using TLD/PARAFAC, demonstrating the utility of this analytical technique on a natural sample containing overlapped analytes without selective ions or peak shape assumptions. [Copyright &y& Elsevier] AB - Copyright of Journal of Chromatography A is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Gas chromatography KW - Multivariate analysis KW - Time-of-flight mass spectrometry KW - Spectrum analysis -- Deconvolution KW - Chemometrics KW - Deconvolution KW - Gas chromatography, comprehensive two-dimensional KW - Multivariate selectivity KW - Net analyte signal KW - Parallel factor analysis N1 - Accession Number: 14959211; Sinha, Amanda E. 1; Hope, Janiece L. 1; Prazen, Bryan J. 1; Fraga, Carlos G. 2; Nilsson, Erik J. 3; Synovec, Robert E.; Email Address: synovec@chem.washington.edu; Affiliations: 1: Department of Chemistry, Center for Process Analytical Chemistry, University of Washington, P.O. Box 351700, Seattle, WA 98195-1700, USA; 2: Department of Chemistry, 2355 Fairchild Dr. Suite 2N225, United States Air Force Academy, Colorado Springs, CO 80840-6230, USA; 3: Insilicos, 4509 Interlake Avenue North, #223, Seattle, WA 98103-6773, USA; Issue Info: Nov2004, Vol. 1056 Issue 1/2, p145; Thesaurus Term: Gas chromatography; Subject Term: Multivariate analysis; Subject Term: Time-of-flight mass spectrometry; Subject Term: Spectrum analysis -- Deconvolution; Author-Supplied Keyword: Chemometrics; Author-Supplied Keyword: Deconvolution; Author-Supplied Keyword: Gas chromatography, comprehensive two-dimensional; Author-Supplied Keyword: Multivariate selectivity; Author-Supplied Keyword: Net analyte signal; Author-Supplied Keyword: Parallel factor analysis; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.chroma.2004.06.110 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=14959211&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - GEN AU - Uchic, Michael D. AU - Dimiduk, Dennis M. AU - Florando, Jeffrey N. AU - Nix, William D. T1 - Response. JO - Science JF - Science Y1 - 2004/11/12/ VL - 306 IS - 5699 M3 - Letter SP - 1134 EP - 1135 SN - 00368075 AB - Presents a letter to the editor, which explains how a surface film could contribute significantly to the strength under progressively rising stresses. KW - Strains & stresses (Mechanics) KW - Letters to the editor N1 - Accession Number: 15178579; Uchic, Michael D. 1; Dimiduk, Dennis M. 1; Florando, Jeffrey N. 2; Nix, William D. 3; Affiliations: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7817, USA.; 2: Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.; 3: Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305-2205, USA.; Issue Info: 11/12/2004, Vol. 306 Issue 5699, p1134; Thesaurus Term: Strains & stresses (Mechanics); Subject Term: Letters to the editor; Number of Pages: 2p; Document Type: Letter; Full Text Word Count: 348 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=15178579&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hughes, David H. T1 - Instantaneous frequency and its instantaneous deviation. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2004/11/10/ VL - 51 IS - 16-18 M3 - Article SP - 2693 EP - 2701 SN - 09500340 AB - Using statistical language, the instantaneous frequency of a deterministic signal, such as an electromagnetic pulse collected at a point in space, is a location function and its deviation is a shape function. The former is better defined than the latter, which can be computed an infinity of different ways, some of which can exhibit pathologies. Some deviations can become pure imaginary in some regions of the time-frequency phase space. The instantaneous frequency of the analytic signal, too, suffers its own pathologies. It can go negative when two or more distinct signals are analysed as a single signal. This paper briefly discusses a limited treatment of the instantaneous frequency and its deviation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PREVENTIVE medicine KW - PATHOLOGY KW - RADIATION KW - FREQUENCY spectra KW - SPECTRUM analysis KW - MEDICAL sciences N1 - Accession Number: 15791826; Hughes, David H. 1; Email Address: hughesd@rl.af.mil; Affiliations: 1: Centre for Integrated Transmission and Exploitation, Air Force Research Laboratory, 525 Brooks Rd., Rome, NY 13441, USA.; Issue Info: 11/10/2004, Vol. 51 Issue 16-18, p2693; Subject Term: PREVENTIVE medicine; Subject Term: PATHOLOGY; Subject Term: RADIATION; Subject Term: FREQUENCY spectra; Subject Term: SPECTRUM analysis; Subject Term: MEDICAL sciences; Number of Pages: 9p; Document Type: Article L3 - 10.1080/09500340412331285000 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=15791826&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 106560761 T1 - The biochemical basis of metabolism in cancer cachexia. AU - Tijerina AJ Y1 - 2004/11//Nov/Dec2004 N1 - Accession Number: 106560761. Language: English. Entry Date: 20050114. Revision Date: 20150819. Publication Type: Journal Article; tables/charts. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. NLM UID: 8211489. KW - Cachexia -- Physiopathology KW - Cancer Patients KW - Metabolism KW - Neoplasms -- Complications KW - Appetite Stimulating Agents KW - Cachexia -- Drug Therapy KW - Cachexia -- Epidemiology KW - Cachexia -- Symptoms KW - Carbohydrate Metabolism KW - Cytokines -- Physiology KW - Interleukins KW - Lipids -- Metabolism KW - Metabolism -- Physiology KW - Proteins -- Metabolism KW - Tumor Necrosis Factor SP - 237 EP - 243 JO - Dimensions of Critical Care Nursing JF - Dimensions of Critical Care Nursing JA - DCCN VL - 23 IS - 6 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - Cancer cachexia is a syndrome of progressive body wasting characterized by loss of adipose tissue and skeletal muscle mass. It is the most common side effect of malignancy occurring in approximately one-half of untreated cancer patients. The pathophysiology of cancer cachexia is not fully understood; however, studies have shown that cytokines are important in the alteration of carbohydrate, lipid, and protein metabolism. This leads to a shorter survival time and a decreased response to therapy. Cachexia is often found before any signs or symptoms of the cancer. An uncertainty with cachexia is whether nutritional support is feeding the patient or the tumor. Often, cachexia is not responsive to simple nutritional interventions. Further-more, appetite stimulants, cytokine inhibitors, and Cori cycle inhibitors have been used to treat cancer cachexia. SN - 0730-4625 AD - US Government, Air Force Research Laboratory/Human Effects Directorate; Amanda.Tijerina@brooks.af.mil U2 - PMID: 15586034. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106560761&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Parco, James AU - Rapoport, Amnon T1 - Enhancing Honesty in Bargaining Under Incomplete Information: An Experimental Study of the Bonus Procedure. JO - Group Decision & Negotiation JF - Group Decision & Negotiation Y1 - 2004/11// VL - 13 IS - 6 M3 - Article SP - 539 EP - 562 SN - 09262644 AB - The sealed-bidk-double auction mechanism for two-person bargaining under incomplete information can be extended by providing a bonus for both traders if, and only if, an agreement is reached. Brams and Kilgour (1996,Group Decision and Negotiation, 5, 239-262) proved that there is a unique level of bonus, namely, half the difference between the buyer’s bid and seller’s ask, that induces the traders to bargain truthfully. Stein and Parco (2001, unpublished manuscript) extend the theoretical work to the case of partial bonus levels that reduce, but do not completely eliminate, misrepresentation of the reservation values. In the present study, we experimentally investigate the effects of providing different bonus values on the misrepresentation of the bargainers’ reservation values. Our results show that implementation of a bonus has a significant impact on bargaining behavior but not nearly to the extent predicted by the equilibrium analysis. A reinforcement-based learning model originally proposed for the no bonus case accounts quite well for the results of all three experimental conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Group Decision & Negotiation is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEGOTIATION KW - VALUES (Ethics) KW - HONESTY KW - RELIABILITY (Personality trait) KW - INTEGRITY KW - TRUTHFULNESS & falsehood KW - bargaining KW - bonus procedure KW - experiment KW - k-double auction KW - sealed-bid KW - truthful revelation N1 - Accession Number: 16273017; Parco, James 1; Email Address: james.parco@usafa.af.mil; Rapoport, Amnon 2; Email Address: amnon@u.arizona.edu; Affiliations: 1: United States Air Force Academy, Department of Management, Colorado Springs CO 80840, USA; 2: University of Arizona, Dept. of Management and Policy, 405 McClelland Hall, Tucson, AZ 85721, USA; Hong Kong University of Science and Technology, Dept. of Economics, Kowloon, Hong Kong; Issue Info: Nov2004, Vol. 13 Issue 6, p539; Thesaurus Term: NEGOTIATION; Subject Term: VALUES (Ethics); Subject Term: HONESTY; Subject Term: RELIABILITY (Personality trait); Subject Term: INTEGRITY; Subject Term: TRUTHFULNESS & falsehood; Author-Supplied Keyword: bargaining; Author-Supplied Keyword: bonus procedure; Author-Supplied Keyword: experiment; Author-Supplied Keyword: k-double auction; Author-Supplied Keyword: sealed-bid; Author-Supplied Keyword: truthful revelation; Number of Pages: 24p; Document Type: Article L3 - 10.1007/s10726-005-3824-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=16273017&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Seongman Jang AU - Choi, Wonsuk AU - Sarkar, Tapan K. AU - Salazar-Palma, Magdalena AU - Kim, Kyungjung AU - Baum, Carl E. T1 - Exploiting Early Time Response Using the Fractional Fourier Transform for Analyzing Transient Radar Returns. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2004/11// Y1 - 2004/11// VL - 52 IS - 11 M3 - Article SP - 3109 EP - 3121 SN - 0018926X AB - This paper presents a new technique for estimating parameters of damped sinusoids and impulse-like responses utilizing both early and late time transient scattering responses. Transient scattering responses are composed of damped sinusoids at late times and impulse-like components at early times. Due to the Impulse-like components, it is difficult to extract meaningful damped sinusoids when analyzing the complete data set. In this paper, the entire time-domain response is used to extract the signal parameters of interest utilizing both the early and late times. The fractional Fourier transform (FrFT), especially the half Fourier transform (HFT), is used to analyze the data for parameter identification. Impulse or Gaussian-like pulses can be easily separated from the late time damped exponentials in the HFT domain, as they have similar functional representations. In addition, the damped exponentials have a turn on time which needs to be solved for. Results from two examples show that the new technique is applicable for signals that are composed of damped exponentials with a turn-on time and short pulse-like components. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR KW - FOURIER transforms KW - FOURIER analysis KW - SCATTERING (Physics) KW - DETECTORS KW - TIME-domain analysis KW - SYSTEM analysis N1 - Accession Number: 15383165; Source Information: Nov2004, Vol. 52 Issue 11, p3109; Subject Term: RADAR; Subject Term: FOURIER transforms; Subject Term: FOURIER analysis; Subject Term: SCATTERING (Physics); Subject Term: DETECTORS; Subject Term: TIME-domain analysis; Subject Term: SYSTEM analysis; Subject Term: ; Number of Pages: 13p; ; Document Type: Article; L3 - 10.1109/TAP.2004.835165 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=15383165&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - McKinney Jr., Earl H. AU - Barker, James R. AU - Smith, Daryl R. AU - Davis, Kevin J. T1 - The role of communication values in swift starting action teams: IT insights from flight crew experience JO - Information & Management JF - Information & Management Y1 - 2004/11// VL - 41 IS - 8 M3 - Article SP - 1043 EP - 1056 SN - 03787206 AB - We define a new subset of action teams termed swift starting action teams. These high technology groups of professional, well trained strangers perform from the moment they start working and face high stakes from the beginning. For these teams, we present evidence that the expression of communication values precedes effective task communication and team performance. IT professionals increasingly team with other professionals in high technology environments, such as swift starting action teams. Communication and communication values are important to the success of action team interactions common to IT professionals, such as requirements analysis, knowledge discovery interviews, and end user service engagements. [Copyright &y& Elsevier] AB - Copyright of Information & Management is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFORMATION technology KW - FLIGHT crews KW - HIGH technology KW - COMMUNICATION KW - Communication KW - Teams KW - Values N1 - Accession Number: 14270706; McKinney Jr., Earl H. 1; Email Address: emckinn@cba.bgsu.edu; Barker, James R. 2; Smith, Daryl R. 2; Davis, Kevin J. 2; Affiliations: 1: 324 BA, College of Business, Bowling Green State University, Bowling Green, OH 43403, USA; 2: US Air Force Academy, Colorado Springs, CO, USA; Issue Info: Nov2004, Vol. 41 Issue 8, p1043; Thesaurus Term: INFORMATION technology; Thesaurus Term: FLIGHT crews; Thesaurus Term: HIGH technology; Thesaurus Term: COMMUNICATION; Author-Supplied Keyword: Communication; Author-Supplied Keyword: Teams; Author-Supplied Keyword: Values; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.im.2003.10.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=14270706&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Beran, P. S. AU - Khot, N. S. AU - Eastep, F. E. AU - Snyder, R. D. AU - Zweber, J. V. T1 - Numerical Analysis of Store-Induced Limit-Cycle Oscillation. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2004/11//Nov/Dec2004 Y1 - 2004/11//Nov/Dec2004 VL - 41 IS - 6 M3 - Article SP - 1315 EP - 1326 SN - 00218669 AB - Store-induced limit-cycle oscillation of a rectangular wing with tip store in transonic flow is simulated using a variety of mathematical models for the flowfield: transonic small-disturbance theory (with and without inclusion of store aerodynamics) and transonic small-disturbance theory with interactive boundary layer (without inclusion of store aerodynamics). For the conditions investigated, assuming inviscid flow, limit-cycle oscillations are observed to occur as a result of a weakly subcritical Hopf bifurcation and are obtained at speeds lower than those predicted 1) nonlinearly for clean-wing flutter and 2) linearly for wing/store flutter. The ability of transonic small-disturbance theory to predict the occurrence and strength of this type of limit-cycle oscillation is compared for the different models. Differences in unmatched and matched aeroelastic analysis are described. Solutions computed for the clean rectangular wing are compared to those computed with the Euler equations for a case of static aeroelastic behavior and for a case of forced, rigid-wing oscillation at Mach 0.92. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIMIT cycles KW - OSCILLATIONS KW - AERODYNAMICS KW - MATHEMATICAL models KW - FLUID dynamics N1 - Accession Number: 15829541; Source Information: Nov/Dec2004, Vol. 41 Issue 6, p1315; Subject Term: LIMIT cycles; Subject Term: OSCILLATIONS; Subject Term: AERODYNAMICS; Subject Term: MATHEMATICAL models; Subject Term: FLUID dynamics; Subject Term: ; Number of Pages: 12p; ; Illustrations: 2 Diagrams, 1 Chart, 12 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=15829541&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2004-19602-003 AN - 2004-19602-003 AU - Stith, Sandra M. AU - Smith, Douglas B. AU - Penn, Carrie E. AU - Ward, David B. AU - Tritt, Dari T1 - Intimate partner physical abuse perpetration and victimization risk factors: A meta-analytic review. JF - Aggression and Violent Behavior JO - Aggression and Violent Behavior JA - Aggress Violent Behav Y1 - 2004/11//Nov-Dec, 2004 VL - 10 IS - 1 SP - 65 EP - 98 CY - Netherlands PB - Elsevier Science SN - 1359-1789 AD - Stith, Sandra M., Human Development Department, Polytechnic Institute, State University, 7054 Haycock Road, Falls Church, VA, US, 22043 N1 - Accession Number: 2004-19602-003. Partial author list: First Author & Affiliation: Stith, Sandra M.; Human Development Department, Virginia Polytechnic Institute, State University, Falls Church, VA, US. Release Date: 20041108. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Partner Abuse; Perpetrators; Physical Abuse; Risk Factors; Victimization. Classification: Behavior Disorders & Antisocial Behavior (3230). Population: Human (10); Male (30); Female (40). Methodology: Meta Analysis. References Available: Y. Page Count: 34. Issue Publication Date: Nov-Dec, 2004. AB - Evidence from 85 studies was examined to identify risk factors most strongly related to intimate partner physical abuse perpetration and victimization. The studies produced 308 distinct effect sizes. These effect sizes were then used to calculate composite effect sizes for 16 perpetration and 9 victimization risk factors. Large effect sizes were found between perpetration of physical abuse and five risk factors (emotional abuse, forced sex, illicit drug use, attitudes condoning marital violence, and marital satisfaction). Moderate effect sizes were calculated between perpetration of physical abuse and six risk factors (traditional sex-role ideology, anger/hostility, history of partner abuse, alcohol use, depression, and career/life stress). A large effect size was calculated between physical violence victimization and the victim using violence toward her partner. Moderate effect sizes were calculated between female physical violence victimization and depression and fear of future abuse. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - intimate partner abuse KW - physical abuse perpetration KW - victimization KW - risk factors KW - 2004 KW - Partner Abuse KW - Perpetrators KW - Physical Abuse KW - Risk Factors KW - Victimization KW - 2004 DO - 10.1016/j.avb.2003.09.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-19602-003&site=ehost-live&scope=site UR - sstith@vt.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Shiffler, D. AU - Zhou, O. AU - Bower, C. AU - Lacour, M. AU - Golby, K. T1 - A High-Current, Large-Area, Carbon Nanotube Cathode. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/10/02/Oct2004 Part 2 of 2 VL - 32 IS - 5 M3 - Article SP - 2152 EP - 2154 SN - 00933813 AB - Carbon nanotubes (CNTs) have attracted great attention as electron emitters. These field emission cathodes operate at room temperature without a heater, in contrast to thermionic emitters that often require considerable heater power for proper operation. Furthermore, CNTs have the advantage of large aspect ratios, allowing large local electric field enhancements at the nanotube tips, further increasing their attractiveness as field emitters. However, due primarily to materials issues such as limited emission site density, screening effects, and weak interfacial bonding, no large area cathodes have been operated at high current to date. In this paper, we report on the design, fabrication, and testing of a large- area CNT cathode operating at high-voltage (>200 kV) and high-current density (30 A/cm2 ). The cathode lifetime exceeded four thousand pulses. The current density and voltage achieved represent a significant achievement and indicate that such a cathode design can prove valuable as a high-current, large-area emitter. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOTUBES KW - FULLERENES KW - ELECTROMAGNETIC fields KW - MAGNETIC fields KW - PLASMA electrodynamics KW - CARBON N1 - Accession Number: 14894573; Shiffler, D. 1; Zhou, O. 2; Bower, C. 2; Lacour, M. 3; Golby, K. 3; Affiliations: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AF.B, NM 87117 USA.; 2: Department of Physics and Astronomy and Curriculum in Applied and Materials Sciences, University of North Carolina, Chapel Hill, NC 27599 USA.; 3: Science Applications International Corporation, Kirtland AFB, NM 87117 USA.; Issue Info: Oct2004 Part 2 of 2, Vol. 32 Issue 5, p2152; Subject Term: NANOTUBES; Subject Term: FULLERENES; Subject Term: ELECTROMAGNETIC fields; Subject Term: MAGNETIC fields; Subject Term: PLASMA electrodynamics; Subject Term: CARBON; Number of Pages: 3p; Document Type: Article L3 - 10.1109/TPS.2004.835519 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=14894573&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Luckarift, Heather R. AU - Dalton, Howard AU - Sharma, Narain D. AU - Boyd, Derek R. AU - Holt, Robert A. T1 - Isolation and characterisation of bacterial strains containing enantioselective DMSO reductase activity: application to the kinetic resolution of racemic sulfoxides. JO - Applied Microbiology & Biotechnology JF - Applied Microbiology & Biotechnology Y1 - 2004/10// VL - 65 IS - 6 M3 - Article SP - 678 EP - 685 PB - Springer Science & Business Media B.V. SN - 01757598 AB - The kinetic resolution of racemic sulfoxides by dimethyl sulfoxide (DMSO) reductases was investigated with a range of microorganisms. Three bacterial isolates (provisionally identified asCitrobacter braakii,Klebsiellasp. andSerratiasp.) expressing DMSO reductase activity were isolated from environmental samples by anaerobic enrichment with DMSO as terminal electron acceptor. The organisms reduced a diverse range of racemic sulfoxides to yield either residual enantiomer depending upon the strain used.C. braakiiDMSO-11 exhibited wide substrate specificity that included dialkyl, diaryl and alkylaryl sulfoxides, and was unique in its ability to reduce the thiosulfinate 1,4-dihydrobenzo-2, 3-dithian-2-oxide. DMSO reductase was purified from the periplasmic fraction ofC. braakiiDMSO-11 and was used to demonstrate unequivocally that the DMSO reductase was responsible for enantiospecific reductive resolution of racemic sulfoxides. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Microbiology & Biotechnology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Dimethyl sulfoxide KW - Sulfoxides KW - Microorganisms KW - Resolution (Chemistry) KW - Enantiomers N1 - Accession Number: 16173951; Luckarift, Heather R. 1,2; Email Address: hluckarift@gulf.net; Dalton, Howard 1,2; Sharma, Narain D. 3; Boyd, Derek R. 3; Holt, Robert A. 4; Affiliations: 1: Department of Biological Sciences, The University of Warwick, Coventry, CV4 7AL, UK; 2: Air Force Research Laboratory, MLQL, Building 1117, 139 Barnes Drive, Suite #2, Tyndall AFB, Tyndall AFB, FL, 32403, USA; 3: School of Chemistry, The Queen's University of Belfast, Belfast, BT9 5AG, UK; 4: Avecia Pharmaceuticals, Belasis Avenue, Billingham, Cleveland, TS23 1YN, UK; Issue Info: Oct2004, Vol. 65 Issue 6, p678; Thesaurus Term: Dimethyl sulfoxide; Thesaurus Term: Sulfoxides; Thesaurus Term: Microorganisms; Subject Term: Resolution (Chemistry); Subject Term: Enantiomers; Number of Pages: 8p; Illustrations: 2 Diagrams, 3 Charts; Document Type: Article L3 - 10.1007/s00253-004-1667-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=16173951&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Grisch, F. AU - Attal-Tretout, B. AU - Bresson, A. AU - Bouchardy, P. AU - Katta, V.R. AU - Roquemore, W.M. T1 - Investigation of a dynamic diffusion flame of H2 in air with laser diagnostics and numerical modeling JO - Combustion & Flame JF - Combustion & Flame Y1 - 2004/10// VL - 139 IS - 1/2 M3 - Article SP - 28 EP - 38 SN - 00102180 AB - Abstract: Detailed studies of flame–vortex interactions play a vital role in improving our understanding of turbulent combustion. A combined experimental and numerical study was conducted on a low-speed, buoyant, jet diffusion flame of hydrogen in air to investigate the vortex–flame interaction and the effects of preferential diffusion on the flame''s structure. A time-dependent, axisymmetric mathematical model with detailed transport processes and a chemical-kinetics mechanism was used to simulate the dynamics of the flame. Single-shot measurements of temperature and the concentrations of molecular hydrogen (H2), the pollutant nitric oxide (NO), atomic oxygen (O), atomic hydrogen (H), and the hydroxyl radical (OH) were made using optical techniques such as coherent anti-Stokes Raman scattering, degenerate four-wave mixing, and planar laser-induced fluorescence. Temperature and mole fractions of different species are presented in two-dimensional contour maps and compared with the numerical predictions. The model predicted the behavior of the experimentally observed dynamic flame quite well, including variations in temperature and molar concentrations of fuel and tracer species such as H, OH, and NO. Discrepancies in the concentration of O atoms were also noted. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Matter -- Properties KW - Solution (Chemistry) KW - Nitric oxide KW - Mathematical statistics KW - CARS KW - DFWM KW - Diffusion flame KW - Flame–vortex interaction KW - LIF N1 - Accession Number: 19291474; Grisch, F. 1; Email Address: frederic.grisch@onera.fr; Attal-Tretout, B. 1; Bresson, A. 1; Bouchardy, P. 1; Katta, V.R. 2; Roquemore, W.M. 3; Affiliations: 1: Département Mesures Physiques, Office National d'Etudes et de Recherches Aérospatiales, Fort de Palaiseau, 91761 Palaiseau Cedex, France; 2: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, OH 45440-3638, USA; 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Issue Info: Oct2004, Vol. 139 Issue 1/2, p28; Thesaurus Term: Matter -- Properties; Thesaurus Term: Solution (Chemistry); Thesaurus Term: Nitric oxide; Subject Term: Mathematical statistics; Author-Supplied Keyword: CARS; Author-Supplied Keyword: DFWM; Author-Supplied Keyword: Diffusion flame; Author-Supplied Keyword: Flame–vortex interaction; Author-Supplied Keyword: LIF; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.combustflame.2004.08.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=19291474&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Sharma, A. K. AU - Zaidi, S. H. AU - Lucero, S. AU - Brueck, S. R. J. AU - Islam, N. E. T1 - Mobility and transverse electric field effects in channel conduction of wrap-around-gate nanowire MOSFETs. JO - IEE Proceedings -- Circuits, Devices & Systems JF - IEE Proceedings -- Circuits, Devices & Systems Y1 - 2004/10// VL - 151 IS - 5 M3 - Article SP - 422 EP - 430 SN - 13502409 AB - In this study, the current conduction process through a nanowire wrap-around-gate, &carat;50nm channel diameter, silicon MOSFET has been investigated and compared with a 2μm wide slab, 200nm thick silicon top-only-gate planar MOSFET with otherwise similar doping profiles, gate length and gate oxide thickness. A significant increase in current density was observed in the nanowire devices compared to the planar devices. A number of parameters such as carrier confinement, effects of parallel and transverse field-dependent mobilities, and carrier scattering due to Coulomb effects, acoustic phonons, impurity doping profile and surface roughness influences the transport process in the channel regions. Experiments also show that the application of the channel potential from three sides in the nanowire structure dramatically improves the subthreshold slope characteristics. KW - NANOTECHNOLOGY KW - NANOWIRES KW - METAL oxide semiconductor field-effect transistors KW - ELECTRIC fields KW - ELECTRON mobility KW - CONDUCTION band N1 - Accession Number: 15310618; Sharma, A. K. 1,2; Zaidi, S. H. 3; Lucero, S. 1; Brueck, S. R. J. 2,4; Islam, N. E. 5; Affiliations: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB NM 87111, USA.; 2: Centre for High Technology Materials, University of New Mexico, Albuquerque NM 87106, USA.; 3: Gratings Inc., Albuquerque, NM 87109, USA.; 4: Department of Physics and Astronomy, University of New Mexico, Albuquerque NM 87106, USA.; 5: Department of Electrical and Computer Engineering, University of Missouri, Columbia MO65211, USA.; Issue Info: Oct2004, Vol. 151 Issue 5, p422; Thesaurus Term: NANOTECHNOLOGY; Subject Term: NANOWIRES; Subject Term: METAL oxide semiconductor field-effect transistors; Subject Term: ELECTRIC fields; Subject Term: ELECTRON mobility; Subject Term: CONDUCTION band; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 9p; Document Type: Article L3 - 10.1049/ip-cds:20040993 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=15310618&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - L. Hong AU - S. Wu AU - Layne, J. R. T1 - Invariant-based probabilistic target tracking and identification with GMTI/HRR measurements. JO - IEE Proceedings -- Radar, Sonar & Navigation JF - IEE Proceedings -- Radar, Sonar & Navigation Y1 - 2004/10// VL - 151 IS - 5 M3 - Article SP - 280 EP - 290 SN - 13502395 AB - An invariant-based algorithm is presented for ground moving-target tracking and identification using ground moving-target indicator and high-resolution range measurements. The algorithm effectively exploits coupled information between target kinematics and identification spaces by introducing the concept of local and global motion. A geometrical invariant constraint based on the target rigidity principle is built into target kinematics and measurement models, which facilitate joint information exploitation. An interacting multiple template algorithm is developed to tightly work with a traditional tracker for joint tracking and identification. Besides providing target kinematics behaviour and identity information, the algorithm is capable of reconstructing the prominent physical structure of a moving target. [ABSTRACT FROM AUTHOR] AB - Copyright of IEE Proceedings -- Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - ELECTRONIC surveillance KW - KINEMATICS KW - REMOTE sensing KW - MECHANICAL movements KW - ARTIFICIAL satellite tracking N1 - Accession Number: 15000567; L. Hong 1; S. Wu 1; Layne, J. R. 2; Affiliations: 1: Department of Electrical Engineering, Wright State University, Dayton, OH 45435, USA; 2: Target Recognition Branch, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Issue Info: Oct2004, Vol. 151 Issue 5, p280; Thesaurus Term: ALGORITHMS; Thesaurus Term: ELECTRONIC surveillance; Subject Term: KINEMATICS; Subject Term: REMOTE sensing; Subject Term: MECHANICAL movements; Subject Term: ARTIFICIAL satellite tracking; NAICS/Industry Codes: 517910 Other telecommunications; NAICS/Industry Codes: 517919 All Other Telecommunications; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; Number of Pages: 11p; Document Type: Article L3 - 10.1049/ip-rsn:20040858 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=15000567&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Leckbee, Joshua J. AU - Curry, Randy D. AU - McDonald, Kenneth F. AU - Cravey, W. Ray AU - Anderson, Glenn AU - Heidger, Susan T1 - Design, Modeling, and Verification of a High-Pressure Liquid Dielectric Switch for Directed Energy Applications. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/10//Oct2004 Part 1 of 2 VL - 32 IS - 5 M3 - Article SP - 1790 EP - 1798 SN - 00933813 AB - A high-power liquid dielectric switch is being developed to satisfy the requirements for future directed energy applications. A flowing, high-pressure liquid dielectric was chosen for the design of a megavolt class switch operating at 100 pps. This paper reports on the design philosophy, modeling, and experimental results of a full size, single-shot prototype 250-300 kV concept validation test (CVT) switch which can transfer kilojoules per. pulse. Analysis of design criteria and scaling for a compact, 100-pps, kilo- joule, high-voltage switch are presented. Optimization studies indicate that a pressure range of 6.9-13.8 MPa(1000-2000 psi) appears to be ideally suited to a flowing dielectric rep-rate switch. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTOTYPES KW - ENGINEERING design KW - FLUIDS KW - DIELECTRICS KW - EXCITON theory KW - HIGH energy radiotherapy KW - Directed energy KW - high pressure KW - high-voltage switch KW - liquid dielectric KW - megawatt switch KW - oil switch KW - rep-rate switch KW - spark gap N1 - Accession Number: 14907310; Leckbee, Joshua J. 1; Curry, Randy D. 1; McDonald, Kenneth F. 1; Cravey, W. Ray 2; Anderson, Glenn 3; Heidger, Susan 4; Affiliations: 1: Department of Electrical Engineering, University of Missouri--Columbia, Columbia, MO 65211 USA.; 2: Alpha-Omega Power Technologies, Albuquerque, NM 87109 USA.; 3: Boeing Company, St. Louis, MO 63166 USA.; 4: Air Force Research Laboratory, AFRLJPRPE, Wright Patterson Air Force Base, OH 45433 USA.; Issue Info: Oct2004 Part 1 of 2, Vol. 32 Issue 5, p1790; Thesaurus Term: PROTOTYPES; Thesaurus Term: ENGINEERING design; Subject Term: FLUIDS; Subject Term: DIELECTRICS; Subject Term: EXCITON theory; Subject Term: HIGH energy radiotherapy; Author-Supplied Keyword: Directed energy; Author-Supplied Keyword: high pressure; Author-Supplied Keyword: high-voltage switch; Author-Supplied Keyword: liquid dielectric; Author-Supplied Keyword: megawatt switch; Author-Supplied Keyword: oil switch; Author-Supplied Keyword: rep-rate switch; Author-Supplied Keyword: spark gap; NAICS/Industry Codes: 541330 Engineering Services; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TPS.2004.835955 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=14907310&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Brungart, Douglas S. AU - Kordik, Alexander J. AU - Simpson, Brian D. T1 - The effects of single and double hearing protection on the localization and segregation of spatially-separated speech signals (L). JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2004/10// VL - 116 IS - 4 M3 - Article SP - 1897 EP - 1900 SN - 00014966 AB - Recent results have shown that auditory localization in the horizontal plane is dramatically worse for listeners wearing double hearing protection (earplugs and earmuffs) than it is for listeners wearing single hearing protection (earplugs or earmuffs alone). This suggests that double hearing protection might also impair the spatial unmasking that normally occurs when two simultaneous talkers are spatially separated in azimuth (the so-called "cocktail party" effect). In this experiment, normal hearing listeners wearing no hearing protection, single hearing protection (earmuffs), or double hearing protection were asked to perform a speech intelligibility task that required them to segregate two simultaneous talkers who were either presented from the same loudspeaker or spatially separated by 90° in azimuth. The listeners were also asked to determine the location of the target talker in each trial. The results show that the listeners were unable to reliably determine the location of the target talker when they wore double hearing protection, but that they were still able to benefit from the spatial separation of the competing talkers. This suggests that the use of double hearing protection causes spatially separated sound sources to be heard at locations that are inaccurate but still distinct enough to enhance the segregation of speech. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOUND -- Equipment & supplies KW - DIRECTIONAL hearing KW - HEARING KW - SPEECH KW - AZIMUTH N1 - Accession Number: 20839709; Brungart, Douglas S. 1; Kordik, Alexander J. 2; Simpson, Brian D. 1; Affiliations: 1 : Air Force Research Laboratory, WPAFB, Ohio; 2 : Sytronics, Dayton, Ohio; Source Info: Oct2004, Vol. 116 Issue 4, p1897; Subject Term: SOUND -- Equipment & supplies; Subject Term: DIRECTIONAL hearing; Subject Term: HEARING; Subject Term: SPEECH; Subject Term: AZIMUTH; Number of Pages: 4p; Illustrations: 1 Graph; Document Type: Article L3 - 10.1121/1.1786812 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=20839709&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR ID - 2004-18503-014 AN - 2004-18503-014 AU - Schulte, Melanie J. AU - Ree, Malcolm James AU - Carretta, Thomas R. T1 - Emotional intelligence: Not much more than g and personality. JF - Personality and Individual Differences JO - Personality and Individual Differences JA - Pers Individ Dif Y1 - 2004/10// VL - 37 IS - 5 SP - 1059 EP - 1068 CY - Netherlands PB - Elsevier Science SN - 0191-8869 AD - Ree, Malcolm James, Our Lady of the Lake University, 411 S. W. 24th Street, San Antonio, TX, US, 78207-4689 N1 - Accession Number: 2004-18503-014. Partial author list: First Author & Affiliation: Schulte, Melanie J.; Our Lady of the Lake University, San Antonio, TX, US. Release Date: 20041004. Correction Date: 20120903. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Ability; Emotional Intelligence; Five Factor Personality Model; Personality Traits. Minor Descriptor: Behavior; Performance. Classification: Personality Traits & Processes (3120). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: NEO-Five-Factor Inventory; Wonderlic Personnel Test; Mayer-Salovey-Caruso Emotional Intelligence Test DOI: 10.1037/t05047-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Oct, 2004. AB - Cognitive ability and personality have long played central roles in the investigation of determinants of human performance. Recently, the construct of emotional intelligence (EI) has emerged in the popular literature as an additional explanatory concept for human behavior and performance. The ability conceptualization of EI proposed by Mayer, Salovey, and their colleagues involves the perception, assimilation, comprehension, and management of emotions. Its proponents consider it to be distinct from either general cognitive ability (g) or personality. The purpose of this study was to investigate the construct validity of EI by examining its relations to g and the Big Five personality dimensions of Neuroticism, Extraversion, Openness to Experience, Agreeableness, and Conscientiousness. The observed correlation between scores on the Wonderlic Personnel Test (a measure of g) and EI was r = 0.454. A regression model that included three predictors representing g, the Big Five dimension of Agreeableness, and sex showed an R of 0.617. After correction for unreliability the multiple correlation became 0.806, showing a strong relationship. Based on these results, we question the uniqueness of EI as a construct and conclude that its potential for advancing our understanding of human performance may be limited. Implications and suggestions for future studies are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - construct validity KW - emotional intelligence KW - human performance KW - cognitive ability KW - personality traits KW - human behavior KW - 2004 KW - Cognitive Ability KW - Emotional Intelligence KW - Five Factor Personality Model KW - Personality Traits KW - Behavior KW - Performance KW - 2004 DO - 10.1016/j.paid.2003.11.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-18503-014&site=ehost-live&scope=site UR - reemal@lake.ollusa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - sullivan, Patrick D. AU - Rood, Mark J. AU - Grevillot, Georges AU - Wander, Joseph D. AU - Hay, K. James T1 - Activated Carbon Fiber Cloth Electrothermal Swing Adsorption System. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2004/09/15/ VL - 38 IS - 18 M3 - Article SP - 4865 EP - 4877 SN - 0013936X AB - Capture and recovery of hazardous air pollutants (HAPs) and volatile organic compounds (VOCs) from gas streams using physical adsorption onto activated carbon fiber cloth (ACFC) is demonstrated on the bench-scale. This system is regenerated electrothermally, by passing an electric current directly through the ACFC. The adsorbate desorbs from the ACFC, rapidly condenses on the inside walls of the adsorber, and then drains from the adsorber as a pure liquid. Rapid electrothermal desorption exhibits such unique characteristics as extremely low purge gas flow rate, rapid rate of ACFC heating, rapid mass transfer kinetics inherent to ACFC, and in-vessel condensation. An existing system was scaled up 500%, and the new system was modeled using material and energy balances. Adsorption isotherms using methyl ethyl ketone (MEK) and ACFC were obtained while electricity passed through the ACFC and at temperatures above MEK's boiling point These isotherms agreed within 7% to Dubinin-Radushkevich modeled isotherms that were extrapolated from independently determined gravimetric measurements obtained at lower temperatures. Energy and material balances for the electrothermal desorption of organic vapors and ACFC agree to within 7% of experimentally measured values. These results allow the modeling of electrothermal desorption of organic vapors from gas streams with in-vessel condensation to optimize operating conditions of the system during regeneration of the adsorbent. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Air pollution KW - Adsorption KW - Separation (Technology) KW - Electricity KW - Atmospheric temperature KW - Gravimetric analysis N1 - Accession Number: 14518131; sullivan, Patrick D. 1; Rood, Mark J. 1; Grevillot, Georges 2; Wander, Joseph D. 3; Hay, K. James 4; Affiliations: 1: Department of Civil and Environmental Engineering, University of Illinois, Urban, Illinois 61801.; 2: Chemical Engineering Science Laboratory--CNRS, ENSIC, Nancy 54001, France.; 3: United States Air Force Research Laboratory, Tyndall AFB, Florida 32403.; 4: U.S. Army Engineer Research and Development Center-CERL, Champaign, Illinois 61826-9005.; Issue Info: 9/15/2004, Vol. 38 Issue 18, p4865; Thesaurus Term: Air pollution; Thesaurus Term: Adsorption; Thesaurus Term: Separation (Technology); Thesaurus Term: Electricity; Thesaurus Term: Atmospheric temperature; Subject Term: Gravimetric analysis; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=14518131&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Repperger, D. W. AU - Buckholtz, K. AU - Danirls, M. T1 - A study on the stabilization of the van der Pol limit cycle. JO - International Journal of Systems Science JF - International Journal of Systems Science Y1 - 2004/09/15/ VL - 35 IS - 11 M3 - Article SP - 661 EP - 669 SN - 00207721 AB - The classical Van der Pol equation is investigated with the goal of stabilizing the well-known limit cycle with only a linear feedback controller. This result is demonstrated in this paper through a five-step process. The stabilization is global in the sense that, with the appropriate controller, the origin now becomes a stable equilibrium point for initial starting points both inside and outside the region, which would normally produce the oscillatory behavior. The technique is outlined in detail sufficient to generalize to other applications that arise in certain classes of nonlinear systems. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Systems Science is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYSTEMS theory KW - DIFFERENTIAL equations KW - EQUATIONS KW - LIMIT cycles KW - DIFFERENTIABLE dynamical systems KW - NONLINEAR systems KW - GLOBAL analysis (Mathematics) N1 - Accession Number: 15679337; Repperger, D. W. 1; Email Address: daniel.repperger@he.wpafb.af.mil; Buckholtz, K. 1; Danirls, M. 1; Affiliations: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433-7022, USA.; Issue Info: 9/15/2004, Vol. 35 Issue 11, p661; Thesaurus Term: SYSTEMS theory; Thesaurus Term: DIFFERENTIAL equations; Subject Term: EQUATIONS; Subject Term: LIMIT cycles; Subject Term: DIFFERENTIABLE dynamical systems; Subject Term: NONLINEAR systems; Subject Term: GLOBAL analysis (Mathematics); Number of Pages: 9p; Document Type: Article L3 - 10.1080/0020772041233131350 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=15679337&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 106676601 T1 - Ergogenic aids: a review of basic science, performance, side effects, and status in sports. AU - Tokish JM AU - Kocher MS AU - Hawkins RJ A2 - Foster TE A2 - Mandelbaum BR Y1 - 2004/09// N1 - Accession Number: 106676601. Language: English. Entry Date: 20041210. Revision Date: 20150819. Publication Type: Journal Article; review; tables/charts. Journal Subset: Allied Health; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 7609541. KW - Ergogenic Products KW - Ergogenic Products -- Pharmacodynamics KW - Sports Medicine KW - Physical Performance KW - Body Composition -- Drug Effects KW - Ergogenic Products -- Adverse Effects KW - Doping in Sports KW - Anabolic Steroids KW - Human Growth Hormone KW - Amphetamines KW - Baseball KW - Erythropoietin KW - Cycling KW - Endurance Sports KW - Dietary Supplements KW - Creatine KW - Ephedra KW - Androstenedione KW - Anabolic Steroids -- Adverse Effects KW - Human Growth Hormone -- Adverse Effects KW - Amphetamines -- Adverse Effects KW - Erythropoietin -- Adverse Effects KW - Creatine -- Adverse Effects KW - Androstenedione -- Adverse Effects SP - 1543 EP - 1553 JO - American Journal of Sports Medicine JF - American Journal of Sports Medicine JA - AM J SPORTS MED VL - 32 IS - 6 CY - Thousand Oaks, California PB - Sage Publications Inc. AB - The use of drugs and supplements to enhance performance has become a part of mainstream athletics. Many team physicians and sports medicine practitioners are unfamiliar with the benefits and risks of these products and thus are unable to educate young athletes on this topic. In spite of numerous reports on the health risks of anabolic steroid use, 1 to 3 million Americans have used them. Human growth hormone has been tried by up to 5% of 10th graders, although no scientific study has shown that it is an effective performance-enhancing drug. Amphetamines and similar compounds may be the most widely abused drug in baseball; recently, they have come under increased scrutiny in sport. Erythropoietin is a highly effective aerobic enhancer that has been linked to multiple deaths in cyclists and other endurance athletes. The neutraceutical industry, led by supplements such as creatine, ephedra, and androstenedione, remains unregulated by the Food and Drug Administration and has serious issues with quality and side effects. An understanding of these products is essential for the sports medicine practitioner to provide sound, safe advice to the athlete. SN - 0363-5465 AD - US Air Force Academy, Colorado Springs, Colorado U2 - PMID: 15310585. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106676601&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Tokish, John M. AU - Kocher, Mininder S. AU - Hawkins, Richard J. T1 - Ergogenic Aids: A Review of Basic Science, Performance, Side Effects, and Status in Sports. JO - American Journal of Sports Medicine JF - American Journal of Sports Medicine Y1 - 2004/09// VL - 32 IS - 6 M3 - Article SP - 1543 EP - 1553 SN - 03635465 AB - The use of drugs and supplements to enhance performance has become a part of mainstream athletics. Many team physicians and sports medicine practitioners are unfamiliar with the benefits and risks of these products and thus are unable to educate young athletes on this topic. In spite of numerous reports on the health risks of anabolic steroid use, 1 to 3 million Americans have used them. Human growth hormone has been tried by up to 5% of 10th graders, although no scientific study has shown that it is an effective performance-enhancing drug. Amphetamines and similar compounds may be the most widely abused drug in baseball; recently, they have come under increased scrutiny in sport. Erythropoietin is a highly effective aerobic enhancer that has been linked to multiple deaths in cyclists and other endurance athletes. The neutraceutical industry, led by supplements such as creatine, ephedra, and androstenedione, remains unregulated by the Food and Drug Administration and has serious issues with quality and side effects. An understanding of these products is essential for the sports medicine practitioner to provide sound, safe advice to the athlete. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Sports Medicine is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPORTS KW - DRUGS -- Physiological effect KW - MEDICINE KW - PHYSICAL fitness KW - ATHLETES KW - ANDROSTENEDIONE KW - performance-enhancing drugs; anabolic agents; steroids; stimulants N1 - Accession Number: 14350827; Tokish, John M. 1; Kocher, Mininder S. 2; Hawkins, Richard J. 3; Source Information: Sep2004, Vol. 32 Issue 6, p1543; Subject: SPORTS; Subject: DRUGS -- Physiological effect; Subject: MEDICINE; Subject: PHYSICAL fitness; Subject: ATHLETES; Subject: ANDROSTENEDIONE; Author-Supplied Keyword: performance-enhancing drugs; anabolic agents; steroids; stimulants; Number of Pages: 11p; Document Type: Article L3 - 10.1177/0363546504268041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=14350827&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Guilbault, Rebecca L. AU - Bryant, Fred B. AU - Brockway, Jennifer Howard AU - Posavac, Emil J. T1 - A Meta-Analysis of Research on Hindsight Bias. JO - Basic & Applied Social Psychology JF - Basic & Applied Social Psychology Y1 - 2004/09// VL - 26 IS - 2/3 M3 - Article SP - 103 EP - 117 PB - Taylor & Francis Ltd SN - 01973533 AB - We conducted a meta-analysis of research on hindsight bias to gain an up-to-date summary of the overall strength of hindsight effects and to test hypotheses about potential moderators of hindsight distortion. A total of 95 studies (83 published and 12 unpublished) were included, and 252 independent effect sizes were coded for moderator variables in 3 broad categories involving characteristics of the study, of measurement, and of the experimental manipulation. When excluding missing effect sizes, the overall mean effect size was Md = .39 with a 95% confidence interval of .36 to .42. Five main findings emerged: (a) effect sizes calculated from objective probability estimates were larger than effect sizes calculated from subjective probability estimates; (b) effect sizes of studies that used almanac questions were larger than effect sizes of studies that used real-world events or case histories; (c) studies that included neutral outcomes resulted in larger effect sizes than studies that used positive or negative outcomes; (d) studies that included manipulations to increase hindsight bias resulted in significantly larger effect sizes than studies in which there were no manipulations to reduce or increase hindsight bias; and (e) studies that included manipulations to reduce hindsight bias did not produce lower effect sizes. These findings contribute to our understanding of hindsight bias by updating the state of knowledge, widening the range of known moderator variables, identifying factors that may activate different mediating processes, and highlighting critical gaps in the research literature. [ABSTRACT FROM AUTHOR] AB - Copyright of Basic & Applied Social Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - HINDSIGHT bias (Psychology) KW - MEMORY KW - PSYCHOLOGY KW - META-analysis N1 - Accession Number: 18331850; Guilbault, Rebecca L. 1; Bryant, Fred B. 1; Email Address: fbryant@luc.edu; Brockway, Jennifer Howard 2; Posavac, Emil J. 1; Affiliations: 1: Department of Psychology, Loyola University Chicago; 2: United States Air Force Academy; Issue Info: Sep2004, Vol. 26 Issue 2/3, p103; Thesaurus Term: RESEARCH; Subject Term: HINDSIGHT bias (Psychology); Subject Term: MEMORY; Subject Term: PSYCHOLOGY; Subject Term: META-analysis; Number of Pages: 15p; Illustrations: 3 Charts; Document Type: Article L3 - 10.1207/s15324834basp2602&3_1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=18331850&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - AU - Rast, V. J.1 T1 - Regional Conflict Management (Book). JO - Choice: Current Reviews for Academic Libraries JF - Choice: Current Reviews for Academic Libraries J1 - Choice: Current Reviews for Academic Libraries PY - 2004/09// Y1 - 2004/09// VL - 42 IS - 1 CP - 1 M3 - Book Review SP - 186 EP - 186 SN - 00094978 AB - Reviews the book "Regional Conflict Management," edited by Paul F. Diehl and Joseph Lepgold. KW - Nonfiction KW - Conflict management KW - Lepgold, Joseph KW - Diehl, Paul F. KW - Regional Conflict Management (Book) N1 - Accession Number: 14501608; Authors: Rast, V. J. 1; Affiliations: 1: United States Air Force Academy; Subject: Regional Conflict Management (Book); Subject: Lepgold, Joseph; Subject: Diehl, Paul F.; Subject: Conflict management; Subject: Nonfiction; Number of Pages: 1/6p; Record Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=14501608&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR ID - 106671582 T1 - Anxiety is not manifested by elevated heart rate and blood pressure in acutely ill cardiac patients. AU - De Jong MJ AU - Moser DK AU - An K AU - Chung ML Y1 - 2004/09// N1 - Accession Number: 106671582. Language: English. Entry Date: 20041203. Revision Date: 20150820. Publication Type: Journal Article; research; tables/charts. Journal Subset: Continental Europe; Europe; Nursing; Peer Reviewed. Instrumentation: Anxiety Subscale of the Brief Symptom Inventory. Grant Information: American Heart Association, the American Association of Critical Care Nurses, and the General Clinical Research Center at The Ohio State University M01RR00034. NLM UID: 101128793. KW - Anxiety KW - Blood Pressure KW - Cardiac Patients KW - Heart Rate KW - Adult KW - Aged KW - Brief Symptom Inventory KW - Control Group KW - Correlation Coefficient KW - Correlational Studies KW - Data Analysis Software KW - Descriptive Research KW - Descriptive Statistics KW - Female KW - Funding Source KW - Heart Failure KW - Male KW - Middle Age KW - Myocardial Infarction KW - Scales KW - T-Tests KW - Two-Tailed Test KW - Human SP - 247 EP - 253 JO - European Journal of Cardiovascular Nursing JF - European Journal of Cardiovascular Nursing JA - EUR J CARDIOVASC NURS VL - 3 IS - 3 PB - Sage Publications, Ltd. AB - BACKGROUND: Accurate assessment of anxiety in cardiac patients is important because anxiety is associated with adverse outcomes. Clinicians often use heart rate and blood pressure as indicators of anxiety; however, little is known about whether these measures accurately reflect anxiety in acutely ill patients. AIMS: The purpose of this study was to determine whether heart rate and blood pressure were related to level of anxiety in patients with chronic advanced heart failure (HF), patients with acute myocardial infarction (AMI), and healthy individuals. METHODS AND RESULTS: In this descriptive, correlational study, anxiety, heart rate, and blood pressure were measured at the same time in three groups of individuals: (1) 54 patients hospitalized for AMI; (2) 32 patients with chronic advanced HF; and (3) 31 healthy individuals. State anxiety was measured using the anxiety subscale of the Brief Symptom Inventory. Heart rate and blood pressure data were collected immediately prior to the anxiety assessment. Data were collected in the outpatient setting for patients with HF and healthy individuals. For patients with AMI, data were collected a mean of 48+/-33 h after admission. There were no correlations between anxiety and heart rate or diastolic blood pressure. Higher anxiety was associated with lower systolic blood pressure in patients with AMI (r=-0.23, P<0.05) and in healthy individuals (r=-0.27, P<0.05). CONCLUSION: Elevated heart rate and blood pressure do not accurately reflect level of anxiety as reported by patients with HF or AMI and healthy individuals, and thus cannot be used to assess anxiety in acutely ill patients. Clinicians who use changes in heart rate or blood pressure as indicators of anxiety may fail to recognize and treat anxiety, placing their patients at high risk for both immediate and long-term complications. SN - 1474-5151 AD - College of Nursing, University of Kentucky/United States Air Force, Lexington, KY; mdejong@aol.com U2 - PMID: 15350235. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106671582&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Zhao, Jian-Shen AU - Spain, Jim AU - Thiboutot, Sonia AU - Ampleman, Guy AU - Greer, Charles AU - Hawari, Jalal T1 - Phylogeny of cyclic nitramine-degrading psychrophilic bacteria in marine sediment and their potential role in the natural attenuation of explosives JO - FEMS Microbiology Ecology JF - FEMS Microbiology Ecology Y1 - 2004/09// VL - 49 IS - 3 M3 - Article SP - 349 EP - 357 SN - 01686496 AB - Previously we reported on in situ mineralization of cyclic nitramine explosives including hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) and octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) in marine sediment from Halifax Harbour. In the present study, we isolated several novel psychrophilic bacteria from the sediment with optimal growth temperature at 10 or 15 °C. Phylogenetic analysis of their 16S rRNA genes identified the isolates as members of the gamma and delta subdivisions of Proteobacteria, Fusobacteria and Clostridiales. The isolates mineralized 3.7–45.2% of RDX (92 μM) in 82 days of incubation at 10 °C under oxygen-limited or anaerobic conditions with the gamma subdivision isolates demonstrating the highest mineralization (45.2% of total C). Removal of RDX by all isolates was accompanied by the formation of all three nitroso derivatives, with the mono nitroso derivative (MNX) being the major one. Isolates of the delta proteobacteria and Fusobacteria removed HMX with concurrent formation of the mononitroso derivative (NO-HMX). Using resting cells of isolates of the gamma subdivision, methylenedinitramine (MEDINA) and 4-nitro-2,4-diazabutanal (NDAB) were detected, suggesting ring-cleavage following denitration of either RDX and/or its initially reduced product, MNX. These results clearly demonstrate that psychrophilic bacteria capable of degrading cyclic nitramines are present in the marine sediment, and might contribute to the in situ biodegradation and natural attenuation of the chemicals. [Copyright &y& Elsevier] AB - Copyright of FEMS Microbiology Ecology is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Bacteria KW - Prokaryotes KW - Marine sediments KW - Biochemistry KW - 4-Nitro-2,4-diazabutanal KW - Cyclic nitramine explosive KW - Marine bacteria KW - Marine sediment KW - Methylenedinitramine KW - Phylogeny KW - Psychrophilic bacteria KW - RDX biodegradation KW - Shewanella KW - Sulfate-reducing bacteria N1 - Accession Number: 14188485; Zhao, Jian-Shen 1; Spain, Jim 2; Thiboutot, Sonia 3; Ampleman, Guy 3; Greer, Charles 1; Hawari, Jalal 1; Email Address: jalal.hawari@cnrc-nrc.gc.ca; Affiliations: 1: Biotechnology Research Institute, National Research Council of Canada, 6100 Royalmount Avenue, Montreal, Que., Canada H4P 2R2; 2: Air Force Research Laboratory-MLQL, Tyndall AFB, FL 32403, USA; 3: Department of National Defense, Defense Research Establishment Valcartier, Que., Canada G3J 1X5; Issue Info: Sep2004, Vol. 49 Issue 3, p349; Thesaurus Term: Bacteria; Thesaurus Term: Prokaryotes; Thesaurus Term: Marine sediments; Subject Term: Biochemistry; Author-Supplied Keyword: 4-Nitro-2,4-diazabutanal; Author-Supplied Keyword: Cyclic nitramine explosive; Author-Supplied Keyword: Marine bacteria; Author-Supplied Keyword: Marine sediment; Author-Supplied Keyword: Methylenedinitramine; Author-Supplied Keyword: Phylogeny; Author-Supplied Keyword: Psychrophilic bacteria; Author-Supplied Keyword: RDX biodegradation; Author-Supplied Keyword: Shewanella; Author-Supplied Keyword: Sulfate-reducing bacteria; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.femsec.2004.04.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=14188485&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Welsh, Byron M. AU - Kent, Brian M. AU - Buterbaugh, Alan L. T1 - Full Polarimetric Calibration for Radar Cross-Section Measurements: Performance Analysis. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2004/09// Y1 - 2004/09// VL - 52 IS - 9 M3 - Article SP - 2357 EP - 2365 SN - 0018926X AB - Full polarimetiic scattering measurements are increasingly required for radar cross-section (RCS) tests. Conventional calibration fails to take into account the small amount of antenna cross-polarization coupling that will be present for any practical antenna. In contrast, full polarimetric calibration takes into account and compensates for the nonideal couplings in the transmit and receive channels and paths. We use an existing full polarimetric calibration procedure and a simulation-based performance to study how well the procedure improves measurement accuracy over conventional calibration under practical measurement conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICAL measurements KW - INDUSTRIAL productivity KW - STANDARDIZATION KW - CALIBRATION KW - ELECTRONIC systems KW - ELECTRONIC pulse techniques N1 - Accession Number: 14506232; Source Information: Sep2004, Vol. 52 Issue 9, p2357; Subject Term: PHYSICAL measurements; Subject Term: INDUSTRIAL productivity; Subject Term: STANDARDIZATION; Subject Term: CALIBRATION; Subject Term: ELECTRONIC systems; Subject Term: ELECTRONIC pulse techniques; Subject Term: ; Number of Pages: 9p; ; Document Type: Article; L3 - 10.1109/TAP.2004.834042 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=14506232&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Eismann, Michael T. AU - Hardie, Russell C. T1 - Application of the Stochastic Mixing Model to Hyperspectral Resolution Enhancement. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2004/09// VL - 42 IS - 9 M3 - Article SP - 1924 EP - 1933 SN - 01962892 AB - A maximum a posteriori (MAP) estimation method is described for enhancing the spatial resolution of a hyperspectral image using a higher resolution coincident panchromatic image. The approach makes use of a stochastic mixing model (SMM) of the underlying spectral scene content to develop a cost function that simulaneously optimizes the estimated hyperspectral scene relative to the observed hyperspectral and panchromatic imagery, as well as the local statistics of the spectral mixing model. The incorporation of the stochastic mixing model is found to be the key ingredient for reconstructing subpixel spectral information in that it provides the necessary constraints that lead to a well-conditioned linear system of equations for the high-resolution hyperspectral image estimate. Here, the mathematical formulation of the proposed MAP method is described. Also, enhancement results using various hyperspectral image datasets are provided. In general, it is found that the MAP/SMM method is able to reconstruct subpixel information in several principal components of the high-resolution hyperspectral image estimate, while the enhancement for conventional methods, like those based on least squares estimation, is limited primarily to the first principal component (i.e., the intensity component). [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYSTEMS theory KW - CORRELATION (Statistics) KW - ESTIMATION theory KW - LINEAR systems KW - RESOLUTION (Optics) KW - SPECTRUM analysis KW - HyperspectraI KW - Maximum a posteriori (MAP) estimation KW - resolution enhancement KW - stochastic mixing model. N1 - Accession Number: 14524435; Eismann, Michael T. 1; Email Address: michael.eismann@wpafh.ml; Hardie, Russell C. 2; Email Address: rhardie@udayton.edu; Affiliations: 1: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7700 USA.; 2: Department of Electrical and Computer Engineering and ihe Blectró.Optics Prograin, University of Dayton, Dayton, 01-145459-0226; Issue Info: Sep2004, Vol. 42 Issue 9, p1924; Thesaurus Term: SYSTEMS theory; Thesaurus Term: CORRELATION (Statistics); Thesaurus Term: ESTIMATION theory; Subject Term: LINEAR systems; Subject Term: RESOLUTION (Optics); Subject Term: SPECTRUM analysis; Author-Supplied Keyword: HyperspectraI; Author-Supplied Keyword: Maximum a posteriori (MAP) estimation; Author-Supplied Keyword: resolution enhancement; Author-Supplied Keyword: stochastic mixing model.; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TGRS.2004.830644 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=14524435&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Hardie, Russell C. AU - Eismann, Michael T. AU - Wilson, Gregory L. T1 - MAP Estimation for Hyperspectral Image Resolution Enhancement Using an Auxiliary Sensor. JO - IEEE Transactions on Image Processing JF - IEEE Transactions on Image Processing Y1 - 2004/09// VL - 13 IS - 9 M3 - Article SP - 1174 EP - 1184 SN - 10577149 AB - This paper presents a novel maximum a posteriori estimator for enhancing the spatial resolution of an image using co-registered high spatial-resolution imagery from an auxiliary sensor. Here, we focus on the use of high-resolution panchomatic data to enhance hyperspectral imagery. However, the estimation framework developed allows for any number of spectral bands in the primary and auxiliary image. The proposed technique is suitable for applications where some correlation, either localized or global, exists between the auxiliary image and the image being enhanced. To exploit localized correlations, a spatially varying statistical model, based on vector quantization, is used. Another important aspect of the proposed algorithm is that it allows for the use of an accurate observation model relating the "true" scene with the low-resolutions observations. Experimental results with hyperspectral data derived from the airborne visible-infrared imaging spectrometer are presented to demonstrate the efficacy of the proposed estimator. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Image Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - REGRESSION analysis KW - IMAGE processing KW - RESOLUTION (Optics) KW - DETECTORS KW - SPECTROMETERS KW - IMAGING systems N1 - Accession Number: 14255958; Hardie, Russell C. 1; Email Address: rhardie@udayton.edu; Eismann, Michael T. 2; Email Address: Michael.Eismann@ wpafb.af.mil; Wilson, Gregory L. 3; Email Address: gwilson@mrcday.com; Affiliations: 1: Department of Electrical and Computer Engineering and Electro-Optics Program, University of Dayton, Dayton, OH 45459-0226 USA.; 2: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7700 USA.; 3: Mission Research Corporation, Dayton, OH 45430 USA.; Issue Info: Sep2004, Vol. 13 Issue 9, p1174; Thesaurus Term: ALGORITHMS; Thesaurus Term: REGRESSION analysis; Subject Term: IMAGE processing; Subject Term: RESOLUTION (Optics); Subject Term: DETECTORS; Subject Term: SPECTROMETERS; Subject Term: IMAGING systems; NAICS/Industry Codes: 812922 One-Hour Photofinishing; NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TIP.2004.829779 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=14255958&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Ryu, Sei-Hyung AU - Krishnaswami, Sumi AU - Das, Mrinal AU - Richmond, James AU - Agarwal, Anant AU - Palmour, John AU - Scofield, James T1 - 2 KV 4H-SiC DMOSFETS FOR LOW LOSS, HIGH FREQUENCY SWITCHING APPLICATIONS. JO - International Journal of High Speed Electronics & Systems JF - International Journal of High Speed Electronics & Systems Y1 - 2004/09// VL - 14 IS - 3 M3 - Article SP - 255 EP - 259 SN - 01291564 AB - Due to the high critical field in 4H-SiC. the drain charge and switching loss densities in a SiC power device are approximately 10X higher than that of a silicon device. However, for the same voltage and resistance ratings, the device area is much smaller for the 4H-SiC device. Therefore, the total drain charge and switching losses are much lower for the 4H-SiC power device. A 2.3 kV, 13.5 mΩ-cm2 4H-SiC power DMOSFET with a device area of 2.1 mm × 2.1 mm has been demonstrated. The device showed a stable avalanche at a drain bias of 2.3 kV, and an on-current of 5 A with a VGS of 20 V and a VDS of 2.6 V. Approximately an order of magnitude lower parasitic capacitance values, as compared to those of commercially available silicon power MOSFETs, were measured for the 4H-SiC power DMOSFET. This suggests that the 4H-SiC DMOSFET can provide an order of magnitude improvement in switching performance in high speed switching applications. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of High Speed Electronics & Systems is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL oxide semiconductor field-effect transistors KW - SILICON KW - ELECTRONICS KW - FIELD-effect transistors KW - TRANSISTORS KW - SWITCHING circuits N1 - Accession Number: 17225263; Ryu, Sei-Hyung 1; Krishnaswami, Sumi 1; Das, Mrinal 1; Richmond, James 1; Agarwal, Anant 1; Palmour, John 1; Scofield, James 2; Affiliations: 1: Cree, Inc.. 4600 Silicon Drive. Durham, NC 27703, USA.; 2: Air Force Research Laboratory, Wright-Patterson Airforce Rase, OH 45433, USA.; Issue Info: Sep2004, Vol. 14 Issue 3, p255; Subject Term: METAL oxide semiconductor field-effect transistors; Subject Term: SILICON; Subject Term: ELECTRONICS; Subject Term: FIELD-effect transistors; Subject Term: TRANSISTORS; Subject Term: SWITCHING circuits; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; NAICS/Industry Codes: 335313 Switchgear and Switchboard Apparatus Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=17225263&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Simons Jr, Jacob V. AU - Russell, Gregory R. AU - Kraus, Mark E. T1 - Service case scheduling: An exploratory description and recommendations for solution. JO - International Journal of Service Industry Management JF - International Journal of Service Industry Management Y1 - 2004/09// VL - 15 IS - 4 M3 - Article SP - 385 EP - 399 SN - 09564233 AB - Numerous services involve the processing of individual customer cases. These cases require a service provider to accomplish several tasks, many of which involve precedence relationships and sequence-dependent setup times. In addition, time lags may be required between certain tasks to permit processing external to the service provider. Finally, satisfaction of customer demand is typically constrained by the availability of the service provider, who seeks to accomplish tasks with an eye toward several dynamic objectives. This problem, designated the service case scheduling problem, is logically described in terms of its objectives, constraints, and characteristics. A simulation study is then used to produce general recommendations for the Problem's solution in practice. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Service Industry Management is the property of Emerald Group Publishing Limited and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CUSTOMER satisfaction KW - CUSTOMER relations KW - CONSUMERS -- Attitudes KW - INTERPERSONAL relations KW - SERVICE industries KW - BUSINESS KW - Customer service management KW - Production scheduling KW - Service operations N1 - Accession Number: 14768741; Simons Jr, Jacob V. 1; Russell, Gregory R. 2; Kraus, Mark E. 3; Affiliations: 1: Department of Finance and Quantitative Analysis, Georgia Southern University, Statesboro, Georgia, USA.; 2: Department of Management, Marketing and Real Estate, College of Business, Morehead State University, Morehead, Kentucky, USA.; 3: Department of Computer Science, US Air Force Academy, Colorado, USA.; Issue Info: 2004, Vol. 15 Issue 4, p385; Thesaurus Term: CUSTOMER satisfaction; Thesaurus Term: CUSTOMER relations; Thesaurus Term: CONSUMERS -- Attitudes; Thesaurus Term: INTERPERSONAL relations; Thesaurus Term: SERVICE industries; Thesaurus Term: BUSINESS; Author-Supplied Keyword: Customer service management; Author-Supplied Keyword: Production scheduling; Author-Supplied Keyword: Service operations; NAICS/Industry Codes: 423850 Service Establishment Equipment and Supplies Merchant Wholesalers; Number of Pages: 15p; Document Type: Article L3 - 10.1108/09564230410552068 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=14768741&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Paul, D. AU - Pratt, D. T1 - History of Flight Vehicle Structures 1903-1990. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2004/09//Sep/Oct2004 Y1 - 2004/09//Sep/Oct2004 VL - 41 IS - 5 M3 - Article SP - 969 EP - 977 SN - 00218669 AB - In this paper the authors present a survey of the major developments in structure technology that have influenced modern aircraft design. They also offer their perspectives on the key materials and concepts that drive air vehicle structural design. The authors discuss the focus of research and development structural development resources and address the reasons for this focus. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES -- Design & construction KW - STRUCTURAL design KW - STRUCTURAL analysis (Engineering) KW - AIRCRAFT industry KW - AEROSPACE industries N1 - Accession Number: 14939717; Source Information: Sep/Oct2004, Vol. 41 Issue 5, p969; Subject Term: AIRPLANES -- Design & construction; Subject Term: STRUCTURAL design; Subject Term: STRUCTURAL analysis (Engineering); Subject Term: AIRCRAFT industry; Subject Term: AEROSPACE industries; Subject Term: ; Number of Pages: 9p; ; Illustrations: 10 Black and White Photographs, 1 Diagram, 5 Charts, 1 Graph; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=14939717&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Clay, Christopher L. T1 - High Speed Flight Vehicle Structures: An Overview. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2004/09//Sep/Oct2004 Y1 - 2004/09//Sep/Oct2004 VL - 41 IS - 5 M3 - Article SP - 978 EP - 985 SN - 00218669 AB - High-speed vehicle structures have been of interest since the earliest days of aviation. Every since that fateful day at Kittyhawk, North Carolina, the quest for speed has been inseparable from the world of aviation. Some of the advances in structures technology are explored specifically for hypersonic flight vehicle structures during the first century of aviation. In particular, those advances pointing toward the next century hypersonic vehicles are examined. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRUCTURAL design KW - AERONAUTICS KW - HIGH-speed aeronautics KW - AIRPLANES -- Design & construction KW - SUPERSONIC aerodynamics KW - P-40 (Fighter plane) N1 - Accession Number: 14939718; Source Information: Sep/Oct2004, Vol. 41 Issue 5, p978; Subject Term: STRUCTURAL design; Subject Term: AERONAUTICS; Subject Term: HIGH-speed aeronautics; Subject Term: AIRPLANES -- Design & construction; Subject Term: SUPERSONIC aerodynamics; Subject Term: P-40 (Fighter plane); Subject Term: ; Number of Pages: 8p; ; Illustrations: 9 Black and White Photographs, 1 Diagram, 3 Charts, 2 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=14939718&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Pettit, Chris L. T1 - Uncertainty Quantification in Aeroelasticity: Recent Results and Research Challenges. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2004/09//Sep/Oct2004 Y1 - 2004/09//Sep/Oct2004 VL - 41 IS - 5 M3 - Article SP - 1217 EP - 1229 SN - 00218669 AB - Static and dynamic aeroelasticity considerations are a particularly important component of airframe design because they often control safety and performance. Consequently, the impact of uncertainty on aeroelastic response prediction has begun to receive substantial attention in the research literature. In this paper, general sources of uncertainty that complicate airframe design and testing are briefly described. Recent applications of uncertainty quantification to various aeroelastic problems, for example, flutter flight testing, prediction of limit-cycle oscillations, and design optimization with aeroelastic constraints, are reviewed with an emphasis on new physical insights and promising paths toward improved design methods that have resulted from these studies. Several challenges and needs are explored to suggest future steps that will enable practical application of uncertainty quantification in aeroelasticity design and certification. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - AERODYNAMICS KW - AIRFRAMES KW - AIRPLANES -- Design & construction KW - STRUCTURAL frames N1 - Accession Number: 14939744; Source Information: Sep/Oct2004, Vol. 41 Issue 5, p1217; Subject Term: AEROELASTICITY; Subject Term: AERODYNAMICS; Subject Term: AIRFRAMES; Subject Term: AIRPLANES -- Design & construction; Subject Term: STRUCTURAL frames; Subject Term: ; Number of Pages: 13p; ; Illustrations: 1 Black and White Photograph, 4 Diagrams, 8 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=14939744&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2004-18454-005 AN - 2004-18454-005 AU - Rapoport, Amnon AU - Stein, William E. AU - Parco, James E. AU - Scale, Darryl A. T1 - Equilibrium play in single-server queues with endogenously determined arrival times. JF - Journal of Economic Behavior & Organization JO - Journal of Economic Behavior & Organization JA - J Econ Behav Organ Y1 - 2004/09// VL - 55 IS - 1 SP - 67 EP - 91 CY - Netherlands PB - Elsevier Science SN - 0167-2681 AD - Rapoport, Amnon, Department of Management and Policy, University of Arizona, McClelland Hall 405, Tucson, AZ, US, 85721 N1 - Accession Number: 2004-18454-005. Partial author list: First Author & Affiliation: Rapoport, Amnon; Department of Management and Policy, University of Arizona, Tucson, AZ, US. Release Date: 20041012. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Games; Obedience; Social Behavior; Social Norms. Classification: Group & Interpersonal Processes (3020). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 25. Issue Publication Date: Sep, 2004. AB - We study a class of queueing problems with endogenous arrival times formulated as non-cooperative n-person games in normal form. With multiple equilibria in pure strategies, these queueing games give rise to problems of tacit coordination. We first describe a Markov chain algorithm used to compute the symmetric mixed-strategy equilibrium solution, and then report the results of an experimental study of a large-scale (n=20) queueing game with fixed service time, FIFO queue discipline, and no early arrivals. Our results show consistent and replicable patterns of arrival that provide strong support for mixed-strategy equilibrium play on the aggregate but not individual level. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - queues KW - endogenous arrival times KW - 2004 KW - Games KW - Obedience KW - Social Behavior KW - Social Norms KW - 2004 DO - 10.1016/j.jebo.2003.07.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-18454-005&site=ehost-live&scope=site UR - amnon@u.arizona.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2004-18191-003 AN - 2004-18191-003 AU - Caldwell, John A. AU - Caldwell, J. Lynn AU - Smith, Jennifer K. AU - Brown, David L. T1 - Modafinil's Effects on Simulator Performance and Mood in Pilots During 37 h Without Sleep. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2004/09// VL - 75 IS - 9 SP - 777 EP - 784 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Caldwell, John A., Air Force Research Laboratory, 2485 Gillingham Dr., Suite 25, Brooks City-Base, TX, US, 78235 N1 - Accession Number: 2004-18191-003. PMID: 15460629 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Caldwell, John A.; Air Force Research Laboratory, Brooks City-Base, TX, US. Release Date: 20050425. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Drugs; Military Personnel; Sleep Deprivation; Wakefulness. Minor Descriptor: Aviation; Simulation. Classification: Drug & Alcohol Usage (Legal) (2990); Military Psychology (3800). Population: Human (10); Male (30). Age Group: Adulthood (18 yrs & older) (300); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Profile of Mood States. Methodology: Empirical Study; Quantitative Study; Scientific Simulation. References Available: Y. Page Count: 8. Issue Publication Date: Sep, 2004. AB - Introduction: Modafinil is a relatively new alertness-enhancing compound of interest to the military aviation community. Although modafinil has been well-tested in clinical settings, additional studies are required to establish its safety and efficacy for use in pilots. Objective: The purpose of this study was to determine whether modafinil (100 mg after 17, 22, and 27 h without sleep) would attenuate the effects of fatigue on fighter-pilot mood and performance during 37 h of continuous wakefulness. Methods: A quasi-experimental, single-blind, counterbalanced design tested the effects of modafinil in 10 Air Force F-117 pilots. Results: Modafinil attenuated flight performance decrements on six of eight simulator maneuvers. Overall, modafinil maintained flight accuracy within approximately 15-30% of baseline levels, whereas performance under the no-treatment/placebo condition declined by as much as 60-100%. Modafinil decreased self-ratings of depression and anger, while improving ratings of vigor, alertness, and confidence. Benefits were most noticeable after 24 to 32 h of continuous wakefulness. One potential drawback of modafinil was that, at least at the 100-mg dose level, the drug's effects were not subjectively salient. Since this may lead personnel to escalate the dose without flight surgeon approval, personnel should be cautioned regarding this particular drug characteristic. Conclusion: Although modafinil did not sustain performance at predeprivation levels, the present study suggests that modafinil should be considered for the military's armament of short-term fatigue countermeasures. Future research will evaluate whether 200-mg doses are more beneficial than the 100-mg doses used here. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - modafinils effects KW - flight performance KW - military aviation KW - fighter pilots KW - fatigue KW - wakefulness KW - simulation performance KW - 2004 KW - Aircraft Pilots KW - Drugs KW - Military Personnel KW - Sleep Deprivation KW - Wakefulness KW - Aviation KW - Simulation KW - 2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-18191-003&site=ehost-live&scope=site UR - john.caldwell@brooks.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2015-56830-012 AN - 2015-56830-012 AU - Neelon, Michael F. AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - The isoazimuthal perception of sounds across distance: A preliminary investigation into the location of the audio egocenter. JF - The Journal of Neuroscience JO - The Journal of Neuroscience JA - J Neurosci Y1 - 2004/09// VL - 24 IS - 35 SP - 7640 EP - 7647 CY - US PB - Society for Neuroscience SN - 0270-6474 SN - 1529-2401 AD - Neelon, Michael F., University of Wisconsin Medical School, Waisman Center, 619, 1500 Highland Avenue, Madison, WI, US, 53705 N1 - Accession Number: 2015-56830-012. PMID: 15342730 Partial author list: First Author & Affiliation: Neelon, Michael F.; University of Wisconsin Medical School, Madison, WI, US. Release Date: 20160331. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Neelon, Michael F. Major Descriptor: Auditory Cortex; Auditory Stimulation. Minor Descriptor: Sensory Integration; Spatial Orientation (Perception). Classification: Auditory & Speech Perception (2326). Population: Human (10); Male (30); Female (40). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 8. Issue Publication Date: Sep, 2004. Publication History: Accepted Date: Jun 11, 2004; Revised Date: Jun 10, 2004; First Submitted Date: Mar 1, 2004. Copyright Statement: Society for Neuroscience. 2004. AB - Evidence indicates that both visual and auditory input may be represented in multiple frames of reference at different processing stages in the nervous system. Most models, however, have assumed that unimodal auditory input is first encoded in a head-centered reference frame. The present work tested this conjecture by measuring the subjective auditory egocenter in six blindfolded listeners who were asked to match the perceived azimuths of sounds that were alternately played between a surrounding arc of far-field speakers and a hand-held point source located three different distances from the head. If unimodal auditory representation is head centered, then 'isoazimuth' lines fitted to the matching estimates across distance should intersect near the midpoint of the interaural axis. For frontomedially arranged speakers, isoazimuth lines instead converged in front of the interaural axis for all listeners, often at a point between the two eyes. As far-field sources moved outside the visual field, however, the auditory egocenter location implied by the intersection of the isoazimuth lines retreated toward or even behind the interaural axis. Physiological and behavioral evidence is used to explain this change from an eye-centered to a head-centered auditory egocenter as a function of source laterality. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - auditory KW - egocenter KW - localization KW - multisensory KW - cortex KW - visual KW - 2004 KW - Auditory Cortex KW - Auditory Stimulation KW - Sensory Integration KW - Spatial Orientation (Perception) KW - 2004 U1 - Sponsor: Sytronics. Other Details: Internship. Recipients: Neelon, Michael F. U1 - Sponsor: Air Force Office of Scientific Research. Grant: LRIR-01-HE-01. Recipients: Simpson, Brian D. DO - 10.1523/JNEUROSCI.0737-04.2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-56830-012&site=ehost-live&scope=site UR - mfneelon@wisc.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Haugan, T. AU - Barnes, P. N. AU - Wheeler, R. AU - Meisenkothen, F. AU - Sumption, M. T1 - Addition of nanoparticle dispersions to enhance flux pinning of the YBa2Cu3O7-x superconductor. JO - Nature JF - Nature Y1 - 2004/08/19/ VL - 430 IS - 7002 M3 - Article SP - 867 EP - 870 SN - 00280836 AB - Following the discovery of type-II high-temperature superconductors in 1986 (refs 1, 2), work has proceeded to develop these materials for power applications. One of the problems, however, has been that magnetic flux is not completely expelled, but rather is contained within magnetic fluxons, whose motion prevents larger supercurrents. It is known that the critical current of these materials can be enhanced by incorporating a high density of extended defects to act as pinning centres for the fluxons. YBa2Cu3O7 (YBCO or 123) is the most promising material for such applications at higher temperatures (liquid nitrogen). Pinning is optimized when the size of the defects approaches the superconducting coherence length (~ 2-4?nm for YBCO at temperatures =77?K) and when the areal number density of defects is of the order of (H/2) × 1011?cm-2, where H is the applied magnetic field in tesla. Such a high density has been difficult to achieve by material-processing methods that maintain a nanosize defect, except through irradiation. Here we report a method for achieving a dispersion of ~8-nm-sized nanoparticles in YBCO with a high number density, which increases the critical current (at 77?K) by a factor of two to three for high magnetic fields. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Liquid nitrogen KW - Magnetic fields KW - Superconductors KW - Nanoparticles KW - Electric currents KW - High temperatures N1 - Accession Number: 14162041; Haugan, T. 1; Email Address: timothy.haugan@wpafb.af.mil; Barnes, P. N. 1; Wheeler, R. 1; Meisenkothen, F. 1; Sumption, M. 2; Affiliations: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7919, USA; 2: Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210, USA; Issue Info: 8/19/2004, Vol. 430 Issue 7002, p867; Thesaurus Term: Liquid nitrogen; Thesaurus Term: Magnetic fields; Subject Term: Superconductors; Subject Term: Nanoparticles; Subject Term: Electric currents; Subject Term: High temperatures; Number of Pages: 4p; Document Type: Article L3 - 10.1038/nature02792 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=14162041&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Uchic, Michael D. AU - Dimiduk, Dennis M. AU - Florando, Jeffrey N. AU - Nix, William D. T1 - Sample Dimensions Influence Strength and Crystal Plasticity. JO - Science JF - Science Y1 - 2004/08/13/ VL - 305 IS - 5686 M3 - Article SP - 986 EP - 989 SN - 00368075 AB - When a crystal deforms plastically, phenomena such as dislocation storage, multiplication, motion, pinning, and nucleation occur over the submicron-to-nanometer scale. Here we report measurements of plastic yielding for single crystals of micrometer-sized dimensions for three different types of metals. We find that within the tests, the overall sample dimensions artificially limit the length scales available for plastic processes. The results show dramatic size effects at surprisingly large sample dimensions. These results emphasize that at the micrometer scale, one must define both the external geometry and internal structure to characterize the strength of a material. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Metals KW - Inorganic chemistry KW - Thickness measurement KW - Micrometers (Instruments) KW - Crystals KW - Crystallography N1 - Accession Number: 14246269; Uchic, Michael D. 1; Email Address: michael.uchic@wpafb.af.mil; Dimiduk, Dennis M. 1; Florando, Jeffrey N. 2; Nix, William D. 3; Affiliations: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7817, USA.; 2: Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.; 3: Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305-2205, USA.; Issue Info: 8/13/2004, Vol. 305 Issue 5686, p986; Thesaurus Term: Metals; Thesaurus Term: Inorganic chemistry; Subject Term: Thickness measurement; Subject Term: Micrometers (Instruments); Subject Term: Crystals; Subject Term: Crystallography; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 332216 Saw Blade and Handtool Manufacturing; NAICS/Industry Codes: 332210 Cutlery and hand tool manufacturing; Number of Pages: 4p; Document Type: Article; Full Text Word Count: 3030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=14246269&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Pakhomov, Andrei G. AU - Phinney, Amy AU - Ashmore, John AU - Walker, III, Kerfoot AU - Kolb, Juergen F. AU - Susumu Kono AU - Schoenbach, Karl H. AU - Murphy, Michael R. T1 - Characterization of the Cytotoxic Effect of High-Intensity, 10-ns Duration Electrical Pulses. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/08/02/Aug2004 Part 2 of 3 VL - 32 IS - 4 M3 - Article SP - 1579 EP - 1586 SN - 00933813 AB - Cytotoxic effects of 10-ns electrical pulses (EP, 50-380 kV/cm) were analyzed in cultured U937 cells (human lymphoma). Densities of live and dead cells were compared in over 500 samples at intervals from 0.5 to 48 h post exposure. EP trains of 1-20 pulses caused a minor, if any, decrease in cell survival: 24 h post exposure, the density of live cells typically dropped just 10-20% compared with unexposed parallel control. Within studied limits, this effect did not significantly depend on the EP number, voltage, or repetition rate. However, much longer EP trains could cause a sharp survival decline. The transition from plateau to profound cell killing occurred at about 150 pulses at 150 kV/cm, and at over 1000 pulses at 50 kV/cm. Artifact-free titer-mometry using a fiber optic microprobe established unequivocally that cell killing by extra-long EP trains was not a result of sample heating and has to be explained by other mechanisms. Testing for specific apoptotic cleavage of poly(ADP-ribose) polymerase at scattered time intervals (1-24 h) after EP exposure produced mostly negative results. Overall, 10-ns EP caused far weaker cytotoxic effect than it was reported earlier from experiments in other cell lines and mostly with longer pulses (60 and 300 ns). The survival curve shape (i.e., the shoulder followed by exponential decline) is also characteristic for other cytotoxic factors, such as low-LET ionizing radiation, thereby possibly pointing to common mechanisms or targets. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIBER optics KW - CELLS KW - APOPTOSIS KW - RADIATION KW - ELECTRIC fields KW - PLASMA (Ionized gases) KW - Apoptosis KW - cytotoxicity KW - nanosecond electrical pulses N1 - Accession Number: 14778884; Pakhomov, Andrei G. 1; Email Address: pakhomov@swbell.net; Phinney, Amy 2; Ashmore, John 2; Walker, III, Kerfoot 2; Kolb, Juergen F. 3; Email Address: jkolb@odu.edu; Susumu Kono 4; Email Address: kohno@ariake-nct.ac.jp; Schoenbach, Karl H. 3; Email Address: kschoenb@odu.edu; Murphy, Michael R. 5; Email Address: michael.murphy@brooks.af.mil; Affiliations: 1: BioServices Corporation, U.S. Army Medical Research Detachment, and Air Force Research Laboratory, Human Effectiveness Directorate, Directed Energy Bioeffects Division, Brooks City- Base, San Antonio, TX 78235 USA.; 2: McKesson BioServices Corporation, U.S. Army Medical Research Detachment, Brooks City-Base, San Antonio, TX 78235 USA.; 3: Center for Bioelectrics, Old Dominion University, Norfolk, VA 23529 USA.; 4: Ariake College of Technology, Fukuoka, 836 8585 Japan.; 5: Air Force Research Laboratory, Human Effectiveness Directorate, Directed Energy Bioeffects Division, Brooks City-Base, San Antonio, TX 78235 USA.; Issue Info: Aug2004 Part 2 of 3, Vol. 32 Issue 4, p1579; Thesaurus Term: FIBER optics; Subject Term: CELLS; Subject Term: APOPTOSIS; Subject Term: RADIATION; Subject Term: ELECTRIC fields; Subject Term: PLASMA (Ionized gases); Author-Supplied Keyword: Apoptosis; Author-Supplied Keyword: cytotoxicity; Author-Supplied Keyword: nanosecond electrical pulses; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TPS.2004.831773 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=14778884&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Seaman, Ronald L. AU - Jauchem, James R. T1 - Rat Electrocardiogram During Acute Exposure to Synchronized Bursts of Ultra-Wideband Pulses. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/08/02/Aug2004 Part 2 of 3 VL - 32 IS - 4 M3 - Article SP - 1644 EP - 1652 SN - 00933813 AB - Rats under ketamine anesthesia were exposed to bursts of ultrawideband (UWB) electromagnetic pulses at two different times during the electrocardiogram (ECG) to investigate possible changes in the ECG immediately after start of exposure. Animals were exposed to UWB pulses in a giga transverse electromagnetic cell (GTEM) with the body axis parallel to the direction of UWB propagation (k-polarization) or the magnetic field vector (H-polarization) in separate experiments. In both experiments, UWB pulses at animal thorax had 106 kV/m peak amplitude, 0.78-4L79 ns duration, and 170-186 ps rise time (mean values) and were applied in 25-ms bursts at 1-kHz repetition frequency. The bursts were synchronized to the artifact-free ECG and occurred either during the R-wave or the T-wave of the ECG. Time intervals measured and analyzed in the ECG were PR, the time between start of P-wave and start of R-wave; RT, the time between start of R-wave and apex of the T-wave; and QT, the time between start of R-wave and end of T-wave. The time between successive R-waves, RR, was also determined. No change attributable to UWB exposure was seen in any of these intervals within S cardiac cycles of the start of exposure. We conclude that UWB pulses applied during the R-wave or the T-wave do not acutely change timing of events in the cardiac cycle of the anesthetized rat. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROCARDIOGRAPHY KW - KETAMINE KW - ANESTHESIA KW - MAGNETIC fields KW - HEART beat KW - POLARIZATION (Electricity) N1 - Accession Number: 14778892; Seaman, Ronald L. 1; Email Address: ronald.seaman@brooks.af.mil; Jauchem, James R. 2; Email Address: james.jauchem@brooks.af.mil; Affiliations: 1: McKesson BioServices, U.S. Army Medical Research Detachment (USAMRD), Wafter Reed Army Institute of Research (WRAIR), Brooks City-Base, TX 78235 USA.; 2: U.S. Air Force Research Laboratory, Directed Energy Bioeffects Division, Radiofrequency Radiation Branch, Brooks City-Base, TX 78235 USA.; Issue Info: Aug2004 Part 2 of 3, Vol. 32 Issue 4, p1644; Subject Term: ELECTROCARDIOGRAPHY; Subject Term: KETAMINE; Subject Term: ANESTHESIA; Subject Term: MAGNETIC fields; Subject Term: HEART beat; Subject Term: POLARIZATION (Electricity); Number of Pages: 10p; Document Type: Article L3 - 10.1109/TPS.2004.830959 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=14778892&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Roy, Sukesh AU - Meyer, Terrence R. AU - Lucht, Robert P. AU - Belovich, Vincent M. AU - Corporan, Edwin AU - Gord, James R. T1 - Temperature and CO2 concentration measurements in the exhaust stream of a liquid-fueled combustor using dual-pump coherent anti-Stokes Raman scattering (CARS) spectroscopy JO - Combustion & Flame JF - Combustion & Flame Y1 - 2004/08// VL - 138 IS - 3 M3 - Article SP - 273 EP - 284 SN - 00102180 AB - Single-shot, dual-pump coherent anti-Stokes Raman scattering (CARS) measurements of N2 and CO2 were performed in the exhaust stream of a swirl-stabilized JP-8-fueled combustor under sooting conditions. The combustor is designed to study particulate formation and particle-size distributions for different flame conditions and therefore is operated at near-stoichiometric overall fuel–air ratios. Various jet fuels and additive concentrations were studied. These conditions pose a significant challenge for temperature measurements using standard N2 CARS due to strong flame emission and absorption of the CARS signal by the C2 Swan band. With the dual-pump CARS technique employed in this study, the N2 CARS signal is generated at a wavelength (496 nm) that is not absorbed by C2, and concentration measurements of CO2 can be performed. The standard deviations of the single-shot temperature measurements were approximately 3–4% of the mean values for equivalence ratios ranging from 0.4 to 1.1, whereas those of the single-shot CO2 concentration measurements were between 9 and 20% of the mean values. Previous single-shot temperature and CO2 concentration measurements using dual-pump CARS in this liquid-fueled combustor were limited to an equivalence ratio of 0.45, with standard deviations in temperature of about 5–6% of the mean value of 1143 K (Lucht et al., AIAA J. 41 (4) (2003) 679–686). The current study demonstrates a significant improvement in the applicability of single-shot CARS temperature and CO2 concentration measurements to practical, swirl-stabilized combustors under sooting conditions. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Liquid fuels KW - Combustion chambers KW - Temperature measurements KW - Raman effect KW - Coherent anti-Stokes Raman scattering KW - Liquid-fueled combustor KW - Sooting flames N1 - Accession Number: 14035838; Roy, Sukesh 1; Email Address: sukesh@innssi.com; Meyer, Terrence R. 1; Lucht, Robert P. 2; Belovich, Vincent M. 3; Corporan, Edwin 3; Gord, James R. 3; Affiliations: 1: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, OH 45440, USA; 2: Department of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA; 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Issue Info: Aug2004, Vol. 138 Issue 3, p273; Thesaurus Term: Liquid fuels; Thesaurus Term: Combustion chambers; Subject Term: Temperature measurements; Subject Term: Raman effect; Author-Supplied Keyword: Coherent anti-Stokes Raman scattering; Author-Supplied Keyword: Liquid-fueled combustor; Author-Supplied Keyword: Sooting flames; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; NAICS/Industry Codes: 562210 Waste treatment and disposal; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.combustflame.2004.04.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=14035838&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Pack, Daniel J. AU - Avanzato, Robert AU - Ahigren, David J. AU - Verner, Igor M. T1 - Fire Fighting Mobile Robotic s and Interdisciplinary Design-Comparative Perspectives. JO - IEEE Transactions on Education JF - IEEE Transactions on Education J1 - IEEE Transactions on Education PY - 2004/08// Y1 - 2004/08// VL - 47 IS - 3 M3 - Article SP - 369 EP - 376 SN - 00189359 AB - The objective of this paper is to illustrate the benefits of an autonomous fire-fighting robot design competition as an effective tool for undergraduate education. It presents experiences at the United States Air Force Academy, USAF Academy, CO; Pennsylvania State University-Abington; and Trinity College, Hartford, CT, together with the results of the contest surveys conducted in collaboration with The Technion-Israel Institute of Technology, Haifa. The primary goal of the design project is to create an autonomous mobile robot that navigates through a maze searching for a fire (simulated by a burning candle), detects the candle's flame, extinguishes the flame, and returns to a designated starting location in the maze. The fire-fighting design contest promotes interdisciplinary design and teamwork. To accomplish the stated goal, students must integrate knowledge gained from such classes as engineering design, circuits, controls, signals and systems, computer programming, mathematics, and engineering mechanics. Within the three institutions, the contest has been successfully utilized as a foundation for a wide range of educational goals. These activities include freshman design, robotics courses, K-12 outreach, senior design projects, and undergraduate research. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Education is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOBILE robots KW - ROBOTICS KW - AUTOMATION KW - MACHINE theory KW - SYSTEMS development KW - COMPUTER science N1 - Accession Number: 14245196; Source Information: Aug2004, Vol. 47 Issue 3, p369; Subject Term: MOBILE robots; Subject Term: ROBOTICS; Subject Term: AUTOMATION; Subject Term: MACHINE theory; Subject Term: SYSTEMS development; Subject Term: COMPUTER science; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.1109/TE.2004.825547 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=14245196&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Radasky, William A. AU - Baum, Carl E. AU - Wik, Manuem W. T1 - Introduction to the Special Is sue on High-Power Electromagnetics (HPEM) and Intentional Electromagnetic Interference (IEMI). JO - IEEE Transactions on Electromagnetic Compatibility JF - IEEE Transactions on Electromagnetic Compatibility J1 - IEEE Transactions on Electromagnetic Compatibility PY - 2004/08// Y1 - 2004/08// VL - 46 IS - 3 M3 - Article SP - 314 EP - 321 SN - 00189375 AB - A new threat to civil society has recently emerged. It is known as intentional electromagnetic interference (IEMI) and covers the threat of intense electromagnetic disturbances that may be applied to the sophisticated electronic systems that are so important to our daily lives. This paper provides a brief background for the threat, defines important terms, describes the different types of electromagnetic threats, explores the importance of topological concepts, summarizes the current understanding of equipment susceptibility, provides, an overview of protection concepts, and summarizes the ongoing work in international standardization. This paper also serves as the introduction to the IEMI papers in this special issue. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electromagnetic Compatibility is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETISM KW - ELECTROMAGNETIC interference KW - STANDARDIZATION KW - TRANSIENTS (Electricity) KW - ELECTRONIC systems KW - ELECTRONICS N1 - Accession Number: 14406851; Source Information: Aug2004, Vol. 46 Issue 3, p314; Subject Term: ELECTROMAGNETISM; Subject Term: ELECTROMAGNETIC interference; Subject Term: STANDARDIZATION; Subject Term: TRANSIENTS (Electricity); Subject Term: ELECTRONIC systems; Subject Term: ELECTRONICS; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; L3 - 10.1109/TEMC.2004.831899 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=14406851&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Prather, William D. AU - Baum, Carl E. AU - Torres, Robert J. AU - Sabath, Frank AU - Nitsch, Danial T1 - Survey of Worldwide High-Power Wideband Capabilities. JO - IEEE Transactions on Electromagnetic Compatibility JF - IEEE Transactions on Electromagnetic Compatibility J1 - IEEE Transactions on Electromagnetic Compatibility PY - 2004/08// Y1 - 2004/08// VL - 46 IS - 3 M3 - Article SP - 335 EP - 344 SN - 00189375 AB - Wideband and ultrawideband (UWB) technologies have achieved: notable progress in recent years, aided immeasurably by improvements in solid-state manufacturing, computers, and digitizers. As a result, wideband systems that were difficult or impossible to implement ten years ago are now being built for an increasingly wide variety of applications including transient radar, concealed object detection, mine clearing, pipeline inspections, archeology, geology, electronic effects testing, and communication. In this paper, we discuss current wideband source technology around the world as well as laboratory and test facilities. We also will briefly touch on frequency limitations of anechoic chambers, design of transmission line simulators, frequency regulation requirements for outdoor ranges, and personnel exposure limits. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electromagnetic Compatibility is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVES KW - SHORTWAVE radio KW - TRANSIENTS (Electricity) KW - RADAR KW - ELECTRONIC systems KW - ELECTRONICS N1 - Accession Number: 14406854; Source Information: Aug2004, Vol. 46 Issue 3, p335; Subject Term: MICROWAVES; Subject Term: SHORTWAVE radio; Subject Term: TRANSIENTS (Electricity); Subject Term: RADAR; Subject Term: ELECTRONIC systems; Subject Term: ELECTRONICS; Subject Term: ; Number of Pages: 10p; ; Document Type: Article; L3 - 10.1109/TEMC.2004.831826 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=14406854&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Walters, Thomas J. AU - Ryan, Kathy L. AU - Constable, Stefan H. T1 - Thermoregulation by rhesus monkeys at different absolute humidities. JO - Journal of Comparative Physiology B: Biochemical, Systemic & Environmental Physiology JF - Journal of Comparative Physiology B: Biochemical, Systemic & Environmental Physiology Y1 - 2004/08// VL - 174 IS - 6 M3 - Article SP - 481 EP - 487 SN - 1432136X AB - The effect of relative humidity on thermoregulation has been well examined. Because the same relative humidity represents very different absolute humidities at different ambient temperatures, the present study was designed to examine the interaction of temperature and absolute humidity on the thermal balance of rhesus monkeys, Macaca mulatta. Thermal balance was examined in six unacclimated, unanesthetized, female rhesus monkeys at ambient temperatures of 25, 30, 35, and 40 °C and absolute humidities of 6, 22, and 40 torr. Monkeys were capable of achieving thermal balance under all conditions except at 40 °C with 40 torr absolute humidity, where experiments were stopped after rectal temperature exceeded 40.5 °C. At 40 °C, monkeys increased evaporative heat loss through both respiration and sweating; the slope of the relationship between evaporative heat loss and core temperature was attenuated by increases in absolute humidity. In contrast, absolute humidity had no direct effect on metabolic rate. The rise in body temperature under the conditions of high heat/high humidity was therefore most attributable to humidity-dependent decreases in evaporative heat loss. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Comparative Physiology B: Biochemical, Systemic & Environmental Physiology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Humidity KW - Macaques KW - Cercopithecidae KW - Rhesus monkey KW - Metabolic rate KW - Temperature KW - Thermal balance N1 - Accession Number: 15781337; Walters, Thomas J. 1; Ryan, Kathy L. 1; Constable, Stefan H. 2; Affiliations: 1: Laboratory Division, United States Army Institute of Surgical Research, 3400 Rawley E. Chambers Avenue, 78234, Fort Sam Houston, TX, USA; 2: Air Force Research Laboratory, 78235, Brooks AFB, TX, USA; Issue Info: Aug2004, Vol. 174 Issue 6, p481; Thesaurus Term: Humidity; Thesaurus Term: Macaques; Thesaurus Term: Cercopithecidae; Subject Term: Rhesus monkey; Author-Supplied Keyword: Metabolic rate; Author-Supplied Keyword: Temperature; Author-Supplied Keyword: Thermal balance; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=15781337&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Smith, Tyler C. AU - Smith, Besa AU - Corbeil, Thomas E. AU - Riddle, James R. AU - Ryan, Margaret A.K. T1 - Self-Reported Mental Health Among US Military Personnel Prior and Subsequent to the Terrorist Attacks of September 11, 2001. JO - Journal of Occupational & Environmental Medicine JF - Journal of Occupational & Environmental Medicine Y1 - 2004/08// VL - 46 IS - 8 M3 - Article SP - 775 EP - 782 SN - 10762752 AB - There is much concern over the potential for short- and long-term adverse mental health effects caused by the terrorist attacks on September 11, 2001. This analysis used data from the Millennium Cohort Study to identify subgroups of US military members who enrolled in the cohort and reported their mental health status before the traumatic events of September 11 and soon after September 11. While adjusting for confounding, multi variable logistic regression, analysis of variance, and multivariate ordinal, or polychotomous logistic regression were used to compare 18 self-reported mental health measures in US military members who enrolled in the cohort before September 11, 2001 with those military personnel who enrolled after September 11, 2001. In contrast to studies of other populations, military respondents reported fewer mental health problems in the months immediately after September 11, 2001. (J Occup Environ Med. 2004;46:775-782) [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Occupational & Environmental Medicine is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Military personnel KW - Mental health KW - September 11 Terrorist Attacks, 2001 KW - Terrorism KW - Regression analysis KW - United States N1 - Accession Number: 14507364; Smith, Tyler C. 1; Smith, Besa 1; Email Address: Smith@nhrc.navy.mil; Corbeil, Thomas E. 1; Riddle, James R. 2; Ryan, Margaret A.K. 1; Affiliations: 1: Department of Defense Center for Deployment Health Research at the Naval Health Research Center, San Diego, California; 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio; Issue Info: Aug2004, Vol. 46 Issue 8, p775; Subject Term: Military personnel; Subject Term: Mental health; Subject Term: September 11 Terrorist Attacks, 2001; Subject Term: Terrorism; Subject Term: Regression analysis; Subject: United States; NAICS/Industry Codes: 621330 Offices of Mental Health Practitioners (except Physicians); Number of Pages: 8p; Illustrations: 4 Charts; Document Type: Article L3 - 10.1097/01.jom.0000135545.51183.ad UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=14507364&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hall, Angela T. AU - Blass, Fred R. AU - Ferris, Gerald R. AU - Massengale, Randy T1 - Leader reputation and accountability in organizations: Implications for dysfunctional leader behavior JO - Leadership Quarterly JF - Leadership Quarterly Y1 - 2004/08// VL - 15 IS - 4 M3 - Article SP - 515 EP - 536 SN - 10489843 AB - We argue that leader accountability is more of an informal, sociopolitical process, than it is a formal one, and a central component of this informal accountability is leader reputation. We propose that leaders'' reputations (which includes human and social capital, political skill and style, etc.) influence how much stakeholders trust them. This, in turn, affects the extent to which formal accountability mechanisms are imposed upon leaders. In this paper, we concentrate on the potential for dysfunctional leader behavior. However, how stakeholders interpret actual leader behavior, whether functional or dysfunctional, is moderated by the motives or intentions that those stakeholders attribute to the behavior. The result is a perception of leader performance and effectiveness that redefines or reinforces leader reputation, and also serves to modify or reinforce leader style. Therefore, a sociopolitical perspective of accountability and reputation asserts that the risk of a diminished reputation is a form of accountability that is effective to the extent that attributions of leader intentions are accurate. Implications for this conceptualization are discussed, as are directions for future research. [Copyright &y& Elsevier] AB - Copyright of Leadership Quarterly is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEADERSHIP KW - HUMAN capital KW - CRIMINAL liability KW - SOCIAL capital (Sociology) KW - TRUST KW - Human capital KW - Leadership KW - Reputation KW - Social capital KW - Trust and accountability N1 - Accession Number: 13958102; Hall, Angela T. 1; Email Address: ath6462@cob.fsu.edu; Blass, Fred R. 2; Ferris, Gerald R. 1; Massengale, Randy 3; Affiliations: 1: Department of Management, College of Business, Florida State University, Tallahassee, FL 32306-1110, USA; 2: United States Air Force Academy, USA; 3: Department of Management, Albers School of Business and Economics, Seattle University, USA; Issue Info: Aug2004, Vol. 15 Issue 4, p515; Thesaurus Term: LEADERSHIP; Thesaurus Term: HUMAN capital; Subject Term: CRIMINAL liability; Subject Term: SOCIAL capital (Sociology); Subject Term: TRUST; Author-Supplied Keyword: Human capital; Author-Supplied Keyword: Leadership; Author-Supplied Keyword: Reputation; Author-Supplied Keyword: Social capital; Author-Supplied Keyword: Trust and accountability; Number of Pages: 22p; Document Type: Article L3 - 10.1016/j.leaqua.2004.05.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=13958102&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 106520147 T1 - Hypnotic efficacy of zaleplon for daytime sleep in rested individuals. AU - Whitmore JN AU - Fischer JR Jr. AU - Storm WF Y1 - 2004/08//2004 Aug 1 N1 - Accession Number: 106520147. Language: English. Entry Date: 20050930. Revision Date: 20150711. Publication Type: Journal Article; CEU; clinical trial; exam questions; research; tables/charts. Journal Subset: Biomedical; Blind Peer Reviewed; Editorial Board Reviewed; Peer Reviewed; USA. Instrumentation: Profile of Mood States (POMS); Stanford Sleepiness Scale [modified]. NLM UID: 7809084. KW - Hypnotics and Sedatives -- Therapeutic Use KW - Sleep -- Drug Effects KW - Adult KW - Analysis of Variance KW - Double-Blind Studies KW - Education, Continuing (Credit) KW - Female KW - Male KW - Polysomnography KW - Psychological Tests KW - Repeated Measures KW - Scales KW - T-Tests KW - Wilcoxon Signed Rank Test KW - Human SP - 895 EP - 898 JO - Sleep JF - Sleep JA - SLEEP VL - 27 IS - 5 CY - Rochester, Minnesota PB - Associated Professional Sleep Societies AB - STUDY OBJECTIVES: The primary objective of this study was to determine whether zaleplon (10 mg) effectively promoted sleep during the daytime in well-rested individuals when compared to placebo. A secondary objective was to see if, while not expected, the use of zaleplon impacted the performance of well-rested individuals upon awakening. DESIGN: Repeated measures with 2 within-subject factors: drug (placebo/zaleplon) and trial (hourly testing during waking hours). Polysomnographic variables were recorded during a 3.5-hour nap following drug administration. Performance measures and subjective reports were collected during every waking trial of each session. SETTING: The study was conducted at the Chronobiology and Sleep Laboratory located at Brooks Air Force Base. PARTICIPANTS: Twelve participants, 6 men and 6 women. INTERVENTIONS: 10-mg zaleplon or placebo capsules, single afternoon dose. Drug administration was counterbalanced and double-blinded. MEASUREMENTS AND RESULTS: Zaleplon allowed participants to obtain significantly more slow-wave sleep than under placebo. There was also a trend for participants under zaleplon to accomplish a greater amount of sleep than under placebo. Performance was not adversely impacted following a 3.5-hour daytime sleep under zaleplon, nor were any undesirable symptoms induced. CONCLUSIONS: Zaleplon improves sleep quality when used by rested individuals to accomplish daytime sleep. SN - 0161-8105 AD - Senior Research Psychologist, Air Force Research Laboratory, 2485 Gillingham Dr, Brooks City-Base, TX 78235-5105; jeff.whitmore@brooks.af.mil U2 - PMID: 15453547. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106520147&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Learning From Each Other: Reviewing Programs. AU - Hedrick, Allen AU - Bennet, Scott JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) Y1 - 2004/08// VL - 26 IS - 4 SP - 46 EP - 48 SN - 15241602 N1 - Accession Number: 14191780; Author: Hedrick, Allen: 1 email: ARHedrick@Adelphia.net. Author: Bennet, Scott: 2 ; Author Affiliation: 1 United States Air Force Academy, Colorado Springs, Colorado: 2 Head Strength and Conditioning Coach, University of Wyoming; No. of Pages: 3; Language: English; Publication Type: Article; Update Code: 20040823 N2 - In the process of continuing to improve the strength and conditioning program, it becomes imperative to initiate a review process at the completion of each in-season phase. During this phase, the athletes typically are not involved in any organized training, and this provides the strength and conditioning coach with an opportunity to review the yearly plan and initiate any changes in the overall plan based on any adjustments that have been deemed to be of value. We asked our panel of coaches to discuss how they go a bout accomplishing this review process. ABSTRACT FROM AUTHOR KW - *MUSCLE strength KW - *PHYSICAL fitness KW - *EXERCISE KW - *PHYSICAL education KW - *ATHLETICS UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=14191780&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 2004-17969-005 AN - 2004-17969-005 AU - Halla, Angela T. AU - Blass, Fred R. AU - Ferris, Gerald R. AU - Massengale, Randy T1 - Leader reputation and accountability in organizations: Implications for dysfunctional leader behavior. JF - The Leadership Quarterly JO - The Leadership Quarterly JA - Leadersh Q Y1 - 2004/08// VL - 15 IS - 4 SP - 515 EP - 536 CY - Netherlands PB - Elsevier Science SN - 1048-9843 AD - Halla, Angela T., Department of Management, College of Business, Florida State University, Tallahassee, FL, US, 32306-1110 N1 - Accession Number: 2004-17969-005. Partial author list: First Author & Affiliation: Halla, Angela T.; Department of Management, College of Business, Florida State University, Tallahassee, FL, US. Release Date: 20060213. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Accountability; Leadership Style; Organizations; Reputation. Minor Descriptor: Social Capital. Classification: Management & Management Training (3640). Population: Human (10). References Available: Y. Page Count: 22. Issue Publication Date: Aug, 2004. AB - We argue that leader accountability is more of an informal, sociopolitical process, than it is a formal one, and a central component of this informal accountability is leader reputation. We propose that leaders' reputations (which includes human and social capital, political skill and style, etc.) influence how much stakeholders trust them. This, in turn, affects the extent to which formal accountability mechanisms are imposed upon leaders. In this paper, we concentrate on the potential for dysfunctional leader behavior. However, how stakeholders interpret actual leader behavior, whether functional or dysfunctional, is moderated by the motives or intentions that those stakeholders attribute to the behavior. The result is a perception of leader performance and effectiveness that redefines or reinforces leader reputation, and also serves to modify or reinforce leader style. Therefore, a sociopolitical perspective of accountability and reputation asserts that the risk of a diminished reputation is a form of accountability that is effective to the extent that attributions of leader intentions are accurate. Implications for this conceptualization are discussed, as are directions for future research. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - leader reputation KW - accountability KW - organizations KW - dysfunctional leader behavior KW - 2004 KW - Accountability KW - Leadership Style KW - Organizations KW - Reputation KW - Social Capital KW - 2004 DO - 10.1016/j.leaqua.2004.05.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-17969-005&site=ehost-live&scope=site UR - ath6462@cob.fsu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Zafer Turgut AU - Huang, Meiqing Q. AU - Horwath, John C. AU - Hinde, Ruth AU - Kubicki, Julie AU - Fingers, Richard T. T1 - Effect of Tensile Stress and Texture on Magnetic Properties of FeCo Laminates. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics J1 - IEEE Transactions on Magnetics PY - 2004/07/02/Jul2004 Part 2 of 2 Y1 - 2004/07/02/Jul2004 Part 2 of 2 VL - 40 IS - 4 M3 - Article SP - 2742 EP - 2744 SN - 00189464 AB - AC and dc magnetic properties and related losses of FeCo alloy sheet samples have been determined under applied tensile stress. Heat-treated strips of alloys Hiperco 50 Hiperco 50-HS and Hiperco 27 with three different orientations (0°-45°-90°) with respect to the rolling direction were tested under tensile stresses up to 200 MPa. In our earlier work, we reported the effect of the compressive stress on the same alloy compositions [1]. Unlike compressive stress, tensile stress decreased the coercivity and increased remanence of the alloys. For the 90°-oriented Hiperco 50 alloy with acoercivity of 1.12 Oe under no applied stress, the minimum coercivity of 0.29 Oe occurred at about 100 MPa. The effect of tensile stress on the rernanence was most pronounced in the Hiperco 50 HS samples. A gradual decrease in the coercive field of the three Hipérco 50 MS samples was observed up to 200 MPa. On the other hand, a minimum at 25 MPa is observed for the coercivity of Hiperco 27 samples. At the same tensile stress, the remanence ratio had a maximum. The 0°-oriented sample exhibited the lowest core loss value of the Hiperco 27 samples. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROALLOYING KW - AMALGAMATION KW - MAGNETISM KW - MATHEMATICAL physics KW - MAGNETICS KW - ALLOYS N1 - Accession Number: 14436149; Source Information: Jul2004 Part 2 of 2, Vol. 40 Issue 4, p2742; Subject Term: MICROALLOYING; Subject Term: AMALGAMATION; Subject Term: MAGNETISM; Subject Term: MATHEMATICAL physics; Subject Term: MAGNETICS; Subject Term: ALLOYS; Subject Term: ; Number of Pages: 3p; ; Document Type: Article; L3 - 10.1109/TMAG.2004.832119 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=14436149&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Huang, M. Q. AU - Turgut, Z. AU - Smith, B. R. AU - Chen, Z. M. AU - Ma, B. M. AU - Chu, S. Y. AU - Laughlin, D. E. AU - Horwath, J. C. AU - Fingers, R. T. T1 - Magnetic Properties of Sm(CObalFe0.31Zr0.05CU0.04Bx) Alloys and Their Melt-Spun Materials (x = 0.02- 0.04, z = 7.5-12). JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics J1 - IEEE Transactions on Magnetics PY - 2004/07/02/Jul2004 Part 2 of 2 Y1 - 2004/07/02/Jul2004 Part 2 of 2 VL - 40 IS - 4 M3 - Article SP - 2934 EP - 2936 SN - 00189464 AB - Cast alloys and melt-spun ribbons with nominal compositions of Sm(CobalFe0.31Zr0.05CU0.04Bx)z (x = 0.02-0.04, z = 7.5-12) have been synthesized and characterized in a temperature range of 10-1273 K and at fields up to 51. The main phase in the as-cast alloys exhibited a Th2 Ni17 type structure, with a strong uniaxial anisotropy. Minor phases with a TbCu7 and/or CaCu5 structure emerged as z (3d/R) decreased. As a result, the anisotropy field (HA) increased from 67 to 120 kOe, while 4πM8 fell from 12.8 to 10.5 kG at 300 K when z was decreased from 12 to 7.5. For melt-spun ribbons, they are nano-structured in nature and magnetically hard, even in the as-spun state. By lowering the value of z(3d/R) and raising the B content, a finer microstructure and a higher Hci were obtained. Hard magnetic properties of Hci = 4.9-12 kOe, 4πM8 = 9.0-12.0 kG at 300 K have been obtained from ribbon samples. Among them, Sm(CobalFe0.31Zr0.05Cu0.04B0.02)10 ribbon showed the highest (BH)max of 10.8 MGOe at 300 K. A Henkel plot analysis suggested the existence of exchange-coupling interaction between the magnetically hard and soft phases in the ribbon materials. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Magnetic properties KW - METALS KW - ALLOYS KW - RIBBONS KW - METALLIC composites KW - MATTER -- Constitution N1 - Accession Number: 14436212; Source Information: Jul2004 Part 2 of 2, Vol. 40 Issue 4, p2934; Subject Term: METALS -- Magnetic properties; Subject Term: METALS; Subject Term: ALLOYS; Subject Term: RIBBONS; Subject Term: METALLIC composites; Subject Term: MATTER -- Constitution; Subject Term: ; Number of Pages: 3p; ; Document Type: Article; L3 - 10.1109/TMAG.2004.828998 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=14436212&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Gili, Sanjitpal S. AU - Turner, Maria A. AU - Battaglia, Todd C. AU - Leis, Henry T. AU - Balian, Gary AU - Miller, Mark D. T1 - Semitendinosus Regrowth: Biochemical, Ultrastructural, and Physiological Characterization of the Regenerate Tendon. JO - American Journal of Sports Medicine JF - American Journal of Sports Medicine Y1 - 2004/07//Jul/Aug2004 VL - 32 IS - 5 M3 - Article SP - 1173 EP - 1181 SN - 03635465 AB - Background: Previous studies have suggested that hamstring tendons can regenerate following harvesting for anterior cruciate ligament reconstruction. Hypothesis: This "neo-tendon" is a true, functional tendon, not scar tissue. Study Design: Controlled laboratory study. Methods: Semitendinosus tendons were harvested from 35 New Zealand white rabbits using a standard tendon stripper. The rabbits were sacrificed 9 to 12 months following the index procedure and thoroughly evaluated. Results: Thirty-one rabbits were available at the time of sacrifice. The neo-tendon was present in 26 rabbits but was highly variable in size and location of its tibial insertion. Histologic and immunohistochemical staining confirmed that the regenerate tissue was indeed tendon with normal cellularity, organization, and immunolocalization of type I collagen. Electron microscopy showed regeneration of organized collagen tissue that simulated native tendon but with a smaller cross-sectional diameter. Functionally, the neo-tendon was able to transmit force across the musculotendinous junction but at a significantly slower rate than the opposite, control leg. Biomechanical properties of the neo-tendon were significantly less than the control side. Biochemical analysis revealed that the neo-tendons contained glycosaminoglycans and collagen, but levels were significantly lower than normal ten-dons. Conclusions: Semitendinosus tendons regenerate with biologically reactive tendinous tissues in an animal model. This tissue has many of the characteristics of a normal tendon but appears to be inferior to the original musculotendinous unit at 9- to 12- month evaluation. Further characterization of the "lizard tail phenomenon" is still needed. Clinical Relevance: Hamstring tendon regrowth may have a dramatic impact on postoperative function of patients who undergo anterior cruciate ligament reconstruction with these tendons. Further modulation of this regeneration may further reduce graft harvesting morbidity. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Sports Medicine is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HAMSTRING muscle KW - ANTERIOR cruciate ligament KW - LEG -- Muscles KW - CRUCIATE ligaments KW - SPORTS medicine KW - TENDONS -- Wounds & injuries KW - anterior cruciate ligament (AOL). KW - hamstring KW - regeneration N1 - Accession Number: 14143684; Gili, Sanjitpal S. 1; Turner, Maria A. 1; Battaglia, Todd C. 1; Leis, Henry T. 2; Balian, Gary 1; Miller, Mark D. 1,2; Source Information: Jul/Aug2004, Vol. 32 Issue 5, p1173; Subject: HAMSTRING muscle; Subject: ANTERIOR cruciate ligament; Subject: LEG -- Muscles; Subject: CRUCIATE ligaments; Subject: SPORTS medicine; Subject: TENDONS -- Wounds & injuries; Author-Supplied Keyword: anterior cruciate ligament (AOL).; Author-Supplied Keyword: hamstring; Author-Supplied Keyword: regeneration; Number of Pages: 9p; Document Type: Article L3 - 10.1177/0363546503262159 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=14143684&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR T1 - Semitendinosus Regrowth: Biochemical, Ultrastructural, and Physiological Characterization of the Regenerate Tendon. AU - Gill, Sanjitpal S. AU - Turner, Maria A. AU - Battaglia, Todd C. AU - Leis, Henry T. AU - Balian, Gary AU - Miller, Mark D. JO - American Journal of Sports Medicine JF - American Journal of Sports Medicine Y1 - 2004/07//July/Aug 2004 VL - 32 IS - 5 SP - 1173 EP - 1181 CY - ; SN - 03635465 N1 - Accession Number: SPHS-972456; Author: Gill, Sanjitpal S.: 1 Author: Turner, Maria A.: 2 Author: Battaglia, Todd C.: 3 Author: Leis, Henry T.: 4 Author: Balian, Gary: 5 Author: Miller, Mark D.: 6 ; Author Affiliation: 1 Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, USA: 2 Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, USA: 3 Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, USA: 4 United States Air Force, Elmendorf AFB, Alaska, USA: 5 Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, USA: 6 Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, USA; No. of Pages: 9; Language: English; Parent Item: SPHP63; References: 42; General Notes: To access content of the article subscription to the journal is required. Presented at the 2003 ISAKOS conference, Auckland, New Zealand, Albert Trillat Award Winner. This study was supported by the Lillian T Pratt Foundation and by a research and development grant from the University of Virginia School of Medicine.; Publication Type: Article; URL; Material Type: PRINT; Update Code: 20060601; SIRC Article No.: S-972456 N2 - Background: Previous studies have suggested that hamstring tendons can regenerate following harvesting for anterior cruciate ligament reconstruction. Hypothesis: This "neo-tendon" is a true, functional tendon, not scar tissue. Study Design: Controlled laboratory study. Methods: Semitendinosus tendons were harvested from 35 New Zealand white rabbits using a standard tendon stripper. The rabbits were sacrificed 9 to 12 months following the index procedure and thoroughly evaluated. Results: Thirty-one rabbits were available at the time of sacrifice. The neo-tendon was present in 26 rabbits but was highly variable in size and location of its tibial insertion. Histologic and immunohistochemical staining confirmed that the regenerate tissue was indeed tendon with normal cellularity, organization, and immunolocalization of type I collagen. Electron microscopy showed regeneration of organized collagen tissue that simulated native tendon but with a smaller cross-sectional diameter. Functionally, the neo-tendon was able to transmit force across the musculotendinous junction but at a significantly slower rate than the opposite, control leg. Biomechanical properties of the neo-tendon were significantly less than the control side. Biochemical analysis revealed that the neo-tendons contained glycosaminoglycans and collagen, but levels were significantly lower than normal tendons. Conclusions: Semitendinosus tendons regenerate with biologically reactive tendinous tissues in an animal model. This tissue has many of the characteristics of a normal tendon but appears to be inferior to the original musculotendinous unit at 9- to 12-month evaluation. Further characterization of the "lizard tail phenomenon" is still needed. Clinical Relevance: Hamstring tendon regrowth may have a dramatic impact on postoperative function of patients who undergo anterior cruciate ligament reconstruction with these tendons. Further modulation of this regeneration may further reduce graft harvesting morbidity. [ABSTRACT FROM AUTHOR] KW - *SPORTS events KW - *ANTERIOR cruciate ligament KW - *HAMSTRING muscle KW - *TENDONS KW - *REGENERATION (Biology) KW - RABBITS L2 - http://articles.sirc.ca/search.cfm?id=S-972456 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=SPHS-972456&site=ehost-live&scope=site UR - http://articles.sirc.ca/search.cfm?id=S-972456 UR - http://www.sagepub.com DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Bhushan, Bharat AU - Halasz, Annamaria AU - Spain, Jim C. AU - Hawari, Jalal T1 - Initial Reaction(s) in Biotransformation of CL-20 Is Catalyzed by Salicylate 1-Monooxygenase from Pseudomonas sp. Strain ATCC 29352. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2004/07// VL - 70 IS - 7 M3 - Article SP - 4040 EP - 4047 SN - 00992240 AB - CL-20 (2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane) (C6H6N12O12), a future-generation highenergy explosive, is biodegradable by Pseudomonas sp. strain FA1 and Agrobacteriutn sp. strain JS71; however, the nature of the enzyme(s) involved in the process was not understood. In the present study, salicylate 1-monooxygenase, a flavin adenine dinucleotide (FAD)-containing purified enzyme from Pseudomonas sp. strain ATCC 29352, biotransformed CL-20 at rates of 0.256 ± 0.011 and 0.043 ± 0.003 nmol min-1 mg of protein-1 under anaerobic and aerobic conditions, respectively. The disappearance of CL-20 was accompanied by the release of nitrite ions. Using liquid chromatography/mass spectrometry in the negative electrospray ionization mode, we detected a metabolite with a deprotonated mass ion [M - H]- at 345 Da, corresponding to an empirical formula of C6H6N10O8, produced as a result of two sequential N denitration steps on the CL-20 molecule. We also detected two isomeric metabolites with [M - H]- at 381 Da corresponding to an empirical formula of C6H10N10O10. The latter was a hydrated product of the metabolite C6H6N10O8 with addition of two H2O molecules, as confirmed by tests using 18O-labeled water. The product stoichiometry showed that each reacted CL-20 molecule produced about 1.7 nitrite ions, 3.2 molecules of nitrous oxide, 1.5 molecules of formic acid, and 0.6 ammonium ion. Diphenyliodonium-mediated inhibition of salicylate l-monooxygenase and a comparative study between native, deflavo, and reconstituted enzyme(s) showed that FAD site of the enzyme was involved in the biotransformation of CL-20 catalyzed by salicylate l-monooxygenase. The data suggested that salicylate l-monooxygenase catalyzed two oxygen-sensitive single-electron transfer steps necessary to release two nitrite ions from CL-20 and that this was followed by the secondary decomposition of this energetic chemical. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Biotransformation (Metabolism) KW - Ions KW - Salicylates KW - Catalysis KW - Monooxygenases KW - Pseudomonas KW - Enzymes N1 - Accession Number: 13950985; Bhushan, Bharat 1; Halasz, Annamaria 1; Spain, Jim C. 2; Hawari, Jalal 1; Email Address: jalal.hawari@nrc.ca; Affiliations: 1: Biotechnology Research Institute, National Research Council of Canada, Montreal Quebec, Canada; 2: U.S. Air Force Research Laboratory, Tyndall Air Force Base, Florida; Issue Info: Jul2004, Vol. 70 Issue 7, p4040; Thesaurus Term: Biotransformation (Metabolism); Thesaurus Term: Ions; Thesaurus Term: Salicylates; Thesaurus Term: Catalysis; Subject Term: Monooxygenases; Subject Term: Pseudomonas; Subject Term: Enzymes; Number of Pages: 8p; Illustrations: 2 Diagrams, 2 Charts, 8 Graphs; Document Type: Article L3 - 10.1128/AEM.70.7.4040-4047.2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=13950985&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Curtis, J. Willard AU - Beard, Randal W. T1 - Satisficing: A New Approach to Constructive Nonlinear Control. JO - IEEE Transactions on Automatic Control JF - IEEE Transactions on Automatic Control Y1 - 2004/07// VL - 49 IS - 7 M3 - Article SP - 1090 EP - 1102 SN - 00189286 AB - The main contribution of this paper is a constructive parameterization of the class of almost smooth universal formulas which render a system asymptotically stable with respect to a known control Lyapunov function (CLF), and a constructive parameterization of a class of inverse optimal universal formulas having Kalman-like stability margins. The novelty of the parameterization is that it is given in terms of two function which are constrained to be locally Lipschitz and satisfy convex constraints. The implication of this result is that the CLF/universal formula approach can be combined with a priori performance objectives to design high performance control strategies. Two examples illustrate the approach. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Automatic Control is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONTROL theory (Mathematics) KW - DIFFERENTIAL equations KW - NONLINEAR control theory KW - NONLINEAR theories KW - LYAPUNOV functions KW - BESSEL functions KW - Control Lyapunov functions (CLFs) KW - inverse optimality KW - nonlinear control KW - stability margins N1 - Accession Number: 13966055; Curtis, J. Willard 1; Email Address: jess.curtis@eglin.af.mil; Beard, Randal W. 2; Email Address: beard@ee.byu.edu; Affiliations: 1: Air Force Research Laboratory, Eglin Air Force Base, Fort Walton Beach, FL 32548 USA.; 2: Electrical and Computer Engineering Department, Brigham Young University, Pravo, UT 84601 USA (e-mail: beard@ee.byu.edu). nt..-.. TAta.- IA 1 lAO/TAr `X1fl4 flh176; Issue Info: Jul2004, Vol. 49 Issue 7, p1090; Thesaurus Term: CONTROL theory (Mathematics); Thesaurus Term: DIFFERENTIAL equations; Subject Term: NONLINEAR control theory; Subject Term: NONLINEAR theories; Subject Term: LYAPUNOV functions; Subject Term: BESSEL functions; Author-Supplied Keyword: Control Lyapunov functions (CLFs); Author-Supplied Keyword: inverse optimality; Author-Supplied Keyword: nonlinear control; Author-Supplied Keyword: stability margins; Number of Pages: 13p; Document Type: Article L3 - 10.1109/TAC.2004.831176 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=13966055&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Arfsten, Darryl P. AU - Johnson, Eric W. AU - Thitoff, Angie R. AU - Jung, Anne E. AU - Wilfong, Erin R. AU - Lohrke, Scott M. AU - Bausman, Tim A. AU - Eggers, Jeffrey S. AU - Bobb, Andrew J. T1 - Impact of 30-Day Oral Dosing with N-acetyl-l-cysteine on Sprague-Dawley Rat Physiology. JO - International Journal of Toxicology (Taylor & Francis) JF - International Journal of Toxicology (Taylor & Francis) Y1 - 2004/07//Jul/Aug2004 VL - 23 IS - 4 M3 - Article SP - 239 EP - 247 PB - Taylor & Francis Ltd SN - 10915818 AB - A number of studies have demonstrated a protective effect associated with N-acetyl-l-cysteine (NAC) against toxic chemical exposure. However, the impact of long-term oral dosing on tissue pathology has not been determined. In this study, the authors assessed the impact of long-term oral NAC administration on organ histopathology and tissue glutathione (GSH) and total glutathione-S-transferase (GST) activity levels in Sprague-Dawley (SD) rats. Groups of 20 SD rats (10 males, 10 females), 8 weeks of age, were dosed daily by oral gavage with deionized H2O (negative controls) or NAC solution at a rate of 600 or 1200 mg/kg/day for 30 days. Animals were euthanized 6 h after treatment on study day 30. There were no significant differences in final body weights or weekly average weight gain between treatment groups. Serum alanine aminotransferase (ALT) activities were significantly elevated (p ≤ .05) in NAC-treated animals compared to controls when measured on study day 30. Histopathologic evaluation of the stomach, small intestine, liver, kidneys, spleen, thymus, and lungs revealed no lesions associated with NAC administration. When measured on study day 30, total GST activity for kidney and skin from NAC-treated animals were increased 39% to 131% as compared to controls. Tissue GSH concentrations from NAC-treated animals were increased 24% to 81% as compared with negative controls. Further studies are needed to determine if the observed increase in tissue GSH concentration and GST activity provide a degree of chemoprotection against dermal and systemic chemical toxicants. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Toxicology (Taylor & Francis) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Toxicology KW - Experimental toxicology KW - Toxicity testing KW - Pharmacology KW - Medicine KW - Cysteine proteinases KW - Glutathione KW - Glutathione-S-transferase KW - N-acetyl-L- cysteine KW - N-acetyl-lcysteine KW - Oral Toxicity KW - Rats N1 - Accession Number: 14361124; Arfsten, Darryl P. 1; Email Address: darryl.arfsten@wpafb.af.mil; Johnson, Eric W. 1; Thitoff, Angie R. 1; Jung, Anne E. 1; Wilfong, Erin R. 1; Lohrke, Scott M. 1; Bausman, Tim A. 2; Eggers, Jeffrey S. 3; Bobb, Andrew J. 1; Affiliations: 1: Naval Health Research Center Environmental Health Effects Laboratory, Wright-Patterson Air Force Base, Ohio, USA; 2: ManTech Inc., Wright-Patterson Air Force Base, Ohio, USA; 3: Air Force Research Laboratory, Brooks Air Force Base, Texas, USA; Issue Info: Jul/Aug2004, Vol. 23 Issue 4, p239; Thesaurus Term: Toxicology; Thesaurus Term: Experimental toxicology; Thesaurus Term: Toxicity testing; Thesaurus Term: Pharmacology; Thesaurus Term: Medicine; Subject Term: Cysteine proteinases; Author-Supplied Keyword: Glutathione; Author-Supplied Keyword: Glutathione-S-transferase; Author-Supplied Keyword: N-acetyl-L- cysteine; Author-Supplied Keyword: N-acetyl-lcysteine; Author-Supplied Keyword: Oral Toxicity; Author-Supplied Keyword: Rats; Number of Pages: 9p; Document Type: Article L3 - 10.1080/10915810490502041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=14361124&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Ferman, M. A. AU - Huttsell, L. J. AU - Turner, E. W. T1 - Experiments with Tangential Blowing to Reduce Buffet Response on an F-15 Model. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2004/07//Jul/Aug2004 Y1 - 2004/07//Jul/Aug2004 VL - 41 IS - 4 M3 - Article SP - 903 EP - 910 SN - 00218669 AB - A concept employing upstream tangential blowing was investigated experimentally as a means for mitigating buffet response of fighter aircraft empennage, notably twin vertical tails. Wind-tunnel tests of a 4.7 %-scale model of the F-15 fighter were conducted in the Subsonic Aerodynamics Research Laboratory, Wright-Patterson Air Force Base, Ohio. Tangential blowing was introduced from three points: the nose, the wing-root leading edge, and the gun bump, flowing back to the tails in a Coanda-like effect. Several blowing pressure values were used at angles of attack from 0 to 32 deg. Blowing was seen to lower the buffet pressures on the tails and to reduce the structural response. The level of response, and trends varied somewhat between bending and torsion moments and acceleration data. Also, the trends depended upon angle of attack and yaw, and frequency bands. In some cases blowing actually increased the response slightly. The most effective blowing position was the wing blowing position; the gun position was the next most effective; and the nose position was the least effective. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - AIRPLANES KW - WIND tunnels KW - MECHANICS (Physics) KW - TORSION N1 - Accession Number: 14321971; Source Information: Jul/Aug2004, Vol. 41 Issue 4, p903; Subject Term: AERODYNAMICS; Subject Term: AIRPLANES; Subject Term: WIND tunnels; Subject Term: MECHANICS (Physics); Subject Term: TORSION; Subject Term: ; Number of Pages: 8p; ; Illustrations: 1 Black and White Photograph, 2 Diagrams, 1 Chart, 12 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=14321971&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Khrabrov, A. AU - Ol, M. Ol T1 - Effects of Flow Separation on Aerodynamic Loads in Linearized Thin Airfoil Theory. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2004/07//Jul/Aug2004 Y1 - 2004/07//Jul/Aug2004 VL - 41 IS - 4 M3 - Article SP - 944 EP - 948 SN - 00218669 AB - Presents a study on the importance of knowing the explicit dependence of the loads on the airfoil upper-surface separation point location of an aircraft. Linear thin airfoil theory with flow separation; Comparison of analytic and computational results for airfoil in separated flow; Conclusions KW - RESEARCH KW - AEROFOILS KW - MODEL airplanes -- Wings KW - MATHEMATICAL analysis KW - AERODYNAMICS N1 - Accession Number: 14321978; Source Information: Jul/Aug2004, Vol. 41 Issue 4, p944; Subject Term: RESEARCH; Subject Term: AEROFOILS; Subject Term: MODEL airplanes -- Wings; Subject Term: MATHEMATICAL analysis; Subject Term: AERODYNAMICS; Subject Term: ; Number of Pages: 5p; ; Illustrations: 2 Diagrams, 4 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=14321978&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Fraser, Steve P. AU - Pantzalis, Christos AD - US Air Force Academy AD - U South FL T1 - Foreign Exchange Rate Exposure of US Multinational Corporations: A Firm-Specific Approach JO - Journal of Multinational Financial Management JF - Journal of Multinational Financial Management Y1 - 2004/07// VL - 14 IS - 3 SP - 261 EP - 281 SN - 1042444X N1 - Accession Number: 0738236; Keywords: Exchange Rates; Firm; Foreign Exchange; MNC; Multinational; Stock Price; Stocks; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 200408 N2 - We examine the relationship between changes in foreign exchange rates and stock prices of US MNCs. Using firm-specific foreign exchange indices, we find more firms with significant exposure than when a common foreign exchange rate index is used as in comparable studies. We find that the number of firms found to have significant foreign exchange exposure, as well as whether or not particular regions of a firm's geographic network structure is associated with any exposure, is dependent upon the type of foreign exchange rate index used to capture exposure. The findings in this study highlight the need for caution in the interpretation of previous studies of foreign exchange rate exposure. KW - Multinational Firms; International Business F23 KW - Foreign Exchange F31 KW - Asset Pricing; Trading Volume; Bond Interest Rates G12 KW - Information and Market Efficiency; Event Studies; Insider Trading G14 KW - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill G32 L3 - http://www.sciencedirect.com/science/journal/1042444X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0738236&site=ehost-live&scope=site UR - http://dx.doi.org/10.1016/j.mulfin.2003.07.008 UR - http://www.sciencedirect.com/science/journal/1042444X DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Caldwell Jr., John A. AU - Caldwell, J. Lynn AU - Brown, David L. AU - Smith, Jennifer K. T1 - The Effects of 37 Hours of Continuous Wakefulness On the Physiological Arousal, Cognitive Performance, Self-Reported Mood, and Simulator Flight Performance of F-l 17A Pilots. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2004/07// VL - 16 IS - 3 M3 - Article SP - 163 EP - 181 PB - Taylor & Francis Ltd SN - 08995605 AB - Pilot fatigue poses a serious threat to operational safety, but understanding the nature of the problem and the times at which pilots are most at risk will facilitate operationally relevant fatigue-management strategies. This investigation sought to address these issues in a controlled investigation of the impact of sustained wakefulness on Air Force aviators. Ten current and qualified F-117 pilots completed the Multi-Attribute Task Battery (MATB), the Profile of Mood States (POMS), a resting eyes-open and eyes-closed EEG, and a standardized flight evaluation in an F-117 flight simulator at 5-hr intervals during the final 23 hours of a 37-hr period of continuous wakefulness. Results indicated significant decrements in mood, cognition, central nervous system activation, and flight skills began to occur in the predawn hours during a night without sleep. However, the most serious operationally relevant decrements appeared at approximately 0700 (after 25 hours without sleep) and persisted throughout the remainder of the deprivation period. The decrements suggested in the real world crew coordination likely will decline, information processing will become impaired, and a wide array of basic capabilities will be degraded as a result of compromised vigilance, poor situational awareness, and sluggish reaction time. Even the well-practiced flight skills of experienced pilots are clearly susceptible to the insidious effects of sleep loss. These quantified effects of untreated sleep deprivation will provide a baseline against which promising countermeasures can be assessed. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAKEFULNESS KW - SLEEP-wake cycle KW - FIGHTER pilots KW - MILITARY air pilots KW - MILITARY psychology KW - PSYCHOLOGY N1 - Accession Number: 14044110; Caldwell Jr., John A. 1; Email Address: john.caldwell@brooks.af.mil; Caldwell, J. Lynn 1; Brown, David L. 2; Smith, Jennifer K. 1; Source Information: Jul2004, Vol. 16 Issue 3, p163; Subject: WAKEFULNESS; Subject: SLEEP-wake cycle; Subject: FIGHTER pilots; Subject: MILITARY air pilots; Subject: MILITARY psychology; Subject: PSYCHOLOGY; Number of Pages: 19p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=14044110&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 106779323 T1 - The effects of 37 hours of continuous wakefulness on the physiological arousal, cognitive performance, self-reported mood, and simulator flight performance of F-117A pilots. AU - Caldwell JA Jr. AU - Caldwell JL AU - Brown DL AU - Smith JK Y1 - 2004/07// N1 - Accession Number: 106779323. Language: English. Entry Date: 20040924. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Instrumentation: Fitness Impairment Tester (FIT); Multi-Attribute Test Battery (MATB) (Comstock and Arnegard); Profile of Mood States (POMS). Grant Information: Air Force Research Laboratory, Air Force Office of Scientific Research, and the US Army Medical Research and Materiel Command. NLM UID: 8915802. KW - Pilots KW - Sleep Deprivation KW - Adult KW - Affect KW - Analysis of Variance KW - Arousal KW - Cognition KW - Diagnosis, Eye KW - Electroencephalography KW - Job Performance KW - Military Personnel KW - New Mexico KW - Psychological Tests KW - Regression KW - Repeated Measures KW - Research Instruments KW - Simulations KW - Funding Source KW - Human SP - 163 EP - 181 JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) JA - MILIT PSYCHOL VL - 16 IS - 3 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - Pilot fatigue poses a serious threat to operational safety, but understanding the nature of the problem and the times at which pilots are most at risk will facilitate operationally relevant fatigue-management strategies. This investigation sought to address these issues in a controlled investigation of the impact of sustained wakefulness on Air Force aviators. Ten current and qualified F-117 pilots completed the Multi-Attribute Task Battery (MATB), the Profile of Mood States (POMS), a resting eyes-open and eyes-closed EEG, and a standardized flight evaluation in an F-117 flight simulator at 5-hr intervals during the final 23 hours of a 37-hr period of continuous wakefulness. Results indicated significant decrements in mood, cognition, central nervous system activation, and flight skills began to occur in the predawn hours during a night without sleep. However, the most serious operationally relevant decrements appeared at approximately 0700 (after 25 hours without sleep) and persisted throughout the remainder of the deprivation period. The decrements suggested in the real world crew coordination likely will decline, information processing will become impaired, and a wide array of basic capabilities will be degraded as a result of compromised vigilance, poor situational awareness, and sluggish reaction time. Even the well-practiced flight skills of experienced pilots are clearly susceptible to the insidious effects of sleep loss. These quantified effects of untreated sleep deprivation will provide a baseline against which promising fatigue countermeasures can be assessed. SN - 0899-5605 AD - Air Force Research Laboratory, AFRLl/HEPM, 2485 Gillingham Dr, Suite 2, Brooks City-Base, TX 78255-5105; john.caldwell@brooks.af.mil UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106779323&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Chickering, Roger AU - Porch, Douglas AU - Yorke, Edmund J. AU - Neiberg, Michael AU - Bowman, Timothy AU - Hamilton, C. I. T1 - Book Reviews. JO - War in History JF - War in History J1 - War in History PY - 2004/07// Y1 - 2004/07// VL - 11 IS - 3 M3 - Book Review SP - 358 EP - 372 PB - Sage Publications, Ltd. SN - 09683445 AB - Reviews several books."Civilians in the Path of War," edited by Mark Grimsley and Clifford J. Rogers; "Soldiers, Commissars, and Chaplains: Civil-Military Relations since Cromwell," by Dale R. Herspring; "Zulu Victory: The Epic of Isandlwana and the Cover-up," by Ron Lock and Peter Quantrill; "A Rain of Lead: The Siege and Surrender of the British at Potchefstroom," by Ian Bennett. KW - SOLDIERS, Commissars & Chaplains (Book) KW - ZULU Victory: The Epic of Isandlwana & the Cover-Up (Book) KW - RAIN of Lead, A (Book) KW - GRIMSLEY, Mark KW - ROGERS, Clifford J. KW - HERSPRING, Dale R. (Dale Roy) KW - LOCK, Ron KW - QUANTRILL, Peter KW - BENNETT, Ian KW - NONFICTION N1 - Accession Number: 13112815; Source Information: Jul2004, Vol. 11 Issue 3, p358; Subject Term: SOLDIERS, Commissars & Chaplains (Book); Subject Term: ZULU Victory: The Epic of Isandlwana & the Cover-Up (Book); Subject Term: RAIN of Lead, A (Book); Subject Term: GRIMSLEY, Mark; Subject Term: ROGERS, Clifford J.; Subject Term: HERSPRING, Dale R. (Dale Roy); Subject Term: LOCK, Ron; Subject Term: QUANTRILL, Peter; Subject Term: BENNETT, Ian; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 15p; ; Document Type: Book Review; L3 - 10.1191/0968344504wh304xx UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=13112815&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 2004-21706-001 AN - 2004-21706-001 AU - Bolia, Robert S. T1 - Special Issue: Spatial Audio Displays for Military Aviation. T3 - Spatial Audio Displays for Military Aviation JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 2004/07// VL - 14 IS - 3 SP - 233 EP - 238 CY - US PB - Lawrence Erlbaum SN - 1050-8414 SN - 1532-7108 AD - Bolia, Robert S., Human Interface Technology Branch (AFRL/HECP), Air Force Research Laboratory, Wright-Patterson AFB, 2255 H Street, OH, US, 45433-7022 N1 - Accession Number: 2004-21706-001. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Bolia, Robert S.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Other Publishers: Taylor & Francis. Release Date: 20041220. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Editorial. Language: English. Major Descriptor: Auditory Displays; Aviation; Human Machine Systems; Military Training. Classification: Human Factors Engineering (4010); Military Psychology (3800). References Available: Y. Page Count: 6. Issue Publication Date: Jul, 2004. AB - Provides an introduction to this special issue of International Journal of Aviation Psychology. The purpose of this special issue was to bring together some of the outstanding recent work on spatial audio displays for military aviation into a single volume, with the twofold goal of providing the designers of cockpit and other aviation displays with an awareness of the research being conducted and as such of the potential for spatial audio displays to improve performance, reduce workload, and enhance situation awareness as well as to convey an idea of its technological maturity and its readiness for transition into real-world systems. Both should be communicated by the discussions of the articles presented in this special issue. The maturity of the technology is also suggested by the fact that spatial audio will be an operational requirement for a number of future United States Air Force platforms. Summaries of the articles in this issue are provided. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - spatial audio displays KW - military aviation KW - aviation displays KW - 2004 KW - Auditory Displays KW - Aviation KW - Human Machine Systems KW - Military Training KW - 2004 DO - 10.1207/s15327108ijap1403_1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-21706-001&site=ehost-live&scope=site UR - Robert.Bolia@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2004-21706-005 AN - 2004-21706-005 AU - Tannen, Robert S. AU - Nelson, W. Todd AU - Bolia, Robert S. AU - Warm, Joel S. AU - Dember, William N. T1 - Evaluating Adaptive Multisensory Displays for Target Localizationin a Flight Task. T3 - Spatial Audio Displays for Military Aviation JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 2004/07// VL - 14 IS - 3 SP - 297 EP - 312 CY - US PB - Lawrence Erlbaum SN - 1050-8414 SN - 1532-7108 AD - Nelson, W. Todd, Air Force Research Laboratory (AFRL/HECP), Wright-Patterson AFB, 2255 H Street, OH, US, 45433-7022 N1 - Accession Number: 2004-21706-005. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Tannen, Robert S.; Electronic Ink, Philadelphia, PA, US. Other Publishers: Taylor & Francis. Release Date: 20041220. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Auditory Displays; Flight Instrumentation; Flight Simulation; Perceptual Localization; Visual Displays. Minor Descriptor: Air Force Personnel; Aircraft Pilots. Classification: Human Factors Engineering (4010); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 16. Issue Publication Date: Jul, 2004. AB - This study was designed to determine the efficacy of providing target location information via head-coupled visual and spatial audio displays presented in adaptive and nonadaptive configurations. Twelve United States Air Force pilots performed a simulated flight task in which they were instructed to maintain flight parameters while searching for ground and air targets. The integration of visual displays with spatial audio cueing enhanced performance efficiency, especially when targets were most difficult to detect. Several of the interface conditions were also associated with lower ratings of perceived mental workload. The benefits associated with multisensory cueing were equivalent in both adaptive and nonadaptive configurations. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - adaptive multisensory displays KW - target location information KW - visual displays KW - spatial audio displays KW - pilots KW - 2004 KW - Auditory Displays KW - Flight Instrumentation KW - Flight Simulation KW - Perceptual Localization KW - Visual Displays KW - Air Force Personnel KW - Aircraft Pilots KW - 2004 DO - 10.1207/s15327108ijap1403_5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-21706-005&site=ehost-live&scope=site UR - Todd.Nelson@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2004-21706-006 AN - 2004-21706-006 AU - Ericson, Mark A. AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Factors That Influence Intelligibility in Multitalker Speech Displays. T3 - Spatial Audio Displays for Military Aviation JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 2004/07// VL - 14 IS - 3 SP - 313 EP - 334 CY - US PB - Lawrence Erlbaum SN - 1050-8414 SN - 1532-7108 AD - Ericson, Mark A., AFRL/HECB, Wright-Patterson AFB, 2610 Seventh Street, OH, US, 45433-7901 N1 - Accession Number: 2004-21706-006. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Ericson, Mark A.; Air Force Research Laboratory, Human Effectiveness Directorate, Wright-Patterson AFB, OH, US. Other Publishers: Taylor & Francis. Release Date: 20041220. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Auditory Displays; Spatial Perception; Stimulus Parameters; Stimulus Presentation Methods; Visual Displays. Minor Descriptor: Comprehension. Classification: Human Factors Engineering (4010). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 22. Issue Publication Date: Jul, 2004. AB - Although many researchers have commented on the potential of audio display technology to improve intelligibility in multitalker speech communication tasks, no consensus exists on how to design an 'optimal' multitalker speech display. In this article, we review several experiments that have used a consistent procedure to evaluate the effect of four monaural parameters on overall intelligibility. We also present the results of a new experiment that has used the same procedure to examine the influence of 2 additional factors in binaural speech displays: (a) the apparent spatial locations of the talkers and (b) the listener's a priori information about the listening task. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - multitalker speech displays KW - intelligibility KW - monoaural parameters KW - binaural speech displays KW - spatial locations KW - 2004 KW - Auditory Displays KW - Spatial Perception KW - Stimulus Parameters KW - Stimulus Presentation Methods KW - Visual Displays KW - Comprehension KW - 2004 DO - 10.1207/s15327108ijap1403_6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-21706-006&site=ehost-live&scope=site UR - mark.ericson@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2004-17052-013 AN - 2004-17052-013 AU - Billock, Vincent A. AU - Tsou, Brian H. T1 - A role for cortical crosstalk in the binding problem: Stimulus-driven correlations that link color, form, and motion. JF - Journal of Cognitive Neuroscience JO - Journal of Cognitive Neuroscience JA - J Cogn Neurosci Y1 - 2004/07//Jul-Aug, 2004 VL - 16 IS - 6 SP - 1036 EP - 1048 CY - US PB - MIT Press SN - 0898-929X SN - 1530-8898 AD - Billock, Vincent A., General Dynamics, Suite 200, 5200 Springfield Pike, Dayton, OH, US, 45431 N1 - Accession Number: 2004-17052-013. PMID: 15298790 Partial author list: First Author & Affiliation: Billock, Vincent A.; General Dynamics, Dayton, OH, US. Release Date: 20040823. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cerebral Cortex; Color; Motion Perception; Neurons; Receptor Binding. Minor Descriptor: Color Perception. Classification: Neuropsychology & Neurology (2520); Visual Perception (2323). Population: Human (10). References Available: Y. Page Count: 13. Issue Publication Date: Jul-Aug, 2004. AB - The putative independence of cortical mechanisms for color, form, and motion raises the binding problem--how is neural activity coordinated to create unified and correctly segmented percepts? Binding could be guided by stimulus-driven correlations between mechanisms, but the nature of these correlations is largely unexplored and no one has (intentionally) studied effects on binding if this joint information is compromised. Here, we develop a theoretical framework which: (1) describes cross-talk-generated correlations between cortical mechanisms for color, achromatic form, and motion, which arise from retinogeniculate encoding; (2) shows how these correlations can facilitate synchronization, segmentation, and binding; (3) provides a basis for understanding perceptual oddities and binding failures that occur for equiluminant and stabilized images. These ideas can be tested by measuring both perceptual events and neural activity while achromatic border contrast or stabilized image velocity is manipulated. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cortical crosstalk KW - binding problem KW - color KW - achromatic form KW - motion KW - neural activity KW - retinogeniculate encoding KW - synchronization KW - segmentation KW - equiluminant images KW - stabilized images KW - 2004 KW - Cerebral Cortex KW - Color KW - Motion Perception KW - Neurons KW - Receptor Binding KW - Color Perception KW - 2004 DO - 10.1162/0898929041502742 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-17052-013&site=ehost-live&scope=site UR - Vince.Billock@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Corporan, Edwin AU - DeWitt, Matthew AU - Wagner, Matthew T1 - Evaluation of soot particulate mitigation additives in a T63 engine JO - Fuel Processing Technology JF - Fuel Processing Technology Y1 - 2004/06/15/ VL - 85 IS - 6/7 M3 - Article SP - 727 SN - 03783820 AB - The performance of fuel additive candidates to mitigate soot particulate emissions in turbine engines was assessed in a T63 helicopter engine. Seventeen additives, including commercial compounds to reduce emissions in internal combustion engines, diesel cetane improvers, and experimental/proprietary additives, were evaluated. The additives were individually injected into the JP-8 fuel feed to the engine, and evaluated at a minimum of three concentration levels. The engine was operated at two conditions, idle and cruise, to investigate additive effects at different power settings or equivalence ratios. Particulate samples were collected from the engine exhaust using an oil-cooled probe, and analyzed using a suite of particulates instrumentation, which included a condensation nuclei counter (CNC), scanning mobility particle sizer (SMPS), laser particle counter (LPC) and a tapered element oscillating microbalance (TEOM). Results indicate that the diesel cetane improvers and commercial smoke abatement additives tested had minimal impact on particulate emissions in the T63 turboshaft engine. One proprietary additive was shown to reduce particle number density (PND) by up to 67% at the relatively high concentration of 3000 mg/l. These benefits were observed only at cruise condition, which may provide some insight into the mechanisms by which the additive suppresses the formation or enhances the oxidation of soot particles. Test results with blends of JP-8 and Norpar-13 (normal paraffins) show significant reductions in particulate emissions for both idle and cruise conditions demonstrating the potential environmental benefits of using blends of clean (low aromatic and low sulfur) fuels with JP-8. Comparisons of mass determination with different instruments and preliminary results of chemical characterization of particulate emissions with and without additives are also presented. [Copyright &y& Elsevier] AB - Copyright of Fuel Processing Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Soot KW - Dust KW - Smoke prevention KW - Electric generators KW - Additives KW - Engine KW - Particulate N1 - Accession Number: 12837648; Corporan, Edwin 1; Email Address: edwin.corporan@wpafb.af.mil; DeWitt, Matthew 2; Wagner, Matthew 3; Affiliations: 1: Air Force Research Laboratory, AFRL/PRTG 1790 Loop Rd N, WPAFB OH 45433-7103, USA; 2: University of Dayton Research Institute, 1790 Loop Rd N, WPAFB OH 45433-7103, USA; 3: Air Force Research Laboratory, AFRL/PRTM 1790 Loop Rd N, WPAFB OH 45433-7103, USA; Issue Info: Jun2004, Vol. 85 Issue 6/7, p727; Thesaurus Term: Soot; Thesaurus Term: Dust; Subject Term: Smoke prevention; Subject Term: Electric generators; Author-Supplied Keyword: Additives; Author-Supplied Keyword: Engine; Author-Supplied Keyword: Particulate; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.fuproc.2003.11.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12837648&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Lang Hong AU - Ningzhou Cui AU - Pronobis, Mark T. AU - Scott, Stephen T1 - Simultaneous ground moving target tracking and identification using wavelets features from HRR data. JO - Information Sciences JF - Information Sciences Y1 - 2004/06/04/ VL - 162 IS - 3/4 M3 - Article SP - 249 EP - 274 SN - 00200255 AB - An algorithm for simultaneous ground moving target tracking and identification (ID) using both Ground Moving Target Indication (GMTI) radar reports and High Resolution Range (HRR) radar profiles is presented in this paper. The GMTI data provide target kinematics information and the HRR profiles deliver target ID information. Wavelet coefficients are first extracted from HRR profiles and then processed by a state- of-the-art wavelets-based statistical signal processing technique: wavelets domain hid- den Markov trees (HMT). A probabilistic approach is adopted to effectively track and identify ground moving targets in confusing scenarios. [ABSTRACT FROM AUTHOR] AB - Copyright of Information Sciences is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - PROBABILITY theory KW - WAVELETS (Mathematics) KW - HARMONIC analysis (Mathematics) KW - KINEMATICS KW - SIGNAL processing -- Digital techniques N1 - Accession Number: 13686701; Lang Hong 1; Email Address: lhong@cs.wright.edu; Ningzhou Cui 1; Pronobis, Mark T. 2; Scott, Stephen 2; Affiliations: 1: Department of Electrical Engineering, Wright State University, Dayton, OH, USA; 2: Information Directorate, AFR/IFEA, Air Force Research Laboratory, Rome, NY, USA; Issue Info: Jun2004, Vol. 162 Issue 3/4, p249; Thesaurus Term: ALGORITHMS; Thesaurus Term: PROBABILITY theory; Subject Term: WAVELETS (Mathematics); Subject Term: HARMONIC analysis (Mathematics); Subject Term: KINEMATICS; Subject Term: SIGNAL processing -- Digital techniques; Number of Pages: 26p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=13686701&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Roderick, Mike T1 - UNITED STATES V. HENDERSON: SPECIAL COURT-MARTIAL CONVENING AUTHORITY CANNOT REFER A CAPITAL CHARGE. JO - Air Force Law Review JF - Air Force Law Review J1 - Air Force Law Review PY - 2004/06// Y1 - 2004/06// VL - 55 M3 - Article SP - 371 EP - 375 PB - Superintendent of Documents SN - 00948381 AB - Criticizes the lack of special court-martial jurisdiction on capital charge of hazarding a vessel as implied in the case, United States v. Henderson. Charges filed against Henderson, who was Damage Controlman Fireman Apprentice onboard the USS TARAWA vessel; Possibility that a pre-trial agreement be construed as a new referral of the non-capital lesser-included charge; Principles of notice pleading. KW - JURISDICTION KW - DANGER (Law) KW - COURTS-martial & courts of inquiry KW - ACTIONS & defenses (Law) -- United States KW - PLEADING (Criminal procedure) KW - CRIMINAL procedure KW - MILITARY law KW - UNITED States N1 - Accession Number: 15274579; Source Information: 2004, Vol. 55, p371; Subject Term: JURISDICTION; Subject Term: DANGER (Law); Subject Term: COURTS-martial & courts of inquiry; Subject Term: ACTIONS & defenses (Law) -- United States; Subject Term: PLEADING (Criminal procedure); Subject Term: CRIMINAL procedure; Subject Term: MILITARY law; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 5p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=15274579&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ashcroft, Bruce T1 - Like Sex with Gods: An Unorthodox History of Flying (Book). JO - Air Power History JF - Air Power History J1 - Air Power History PY - 2004///Summer2004 Y1 - 2004///Summer2004 VL - 51 IS - 2 M3 - Book Review SP - 50 EP - 52 PB - Air Force Historical Foundation SN - 1044016X AB - Reviews the book "Like Sex with Gods: An Unorthodox History of Flying," by Bayla Singer. KW - LIKE Sex With Gods (Book) KW - SINGER, Bayla KW - AERONAUTICS KW - NONFICTION N1 - Accession Number: 13377489; Source Information: Summer2004, Vol. 51 Issue 2, p50; Subject Term: LIKE Sex With Gods (Book); Subject Term: SINGER, Bayla; Subject Term: AERONAUTICS; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=13377489&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Cook, Martin L. T1 - ETHICAL AND LEGAL DIMENSIONS OF THE BUSH "PREEMPTION" STRATEGY. JO - Harvard Journal of Law & Public Policy JF - Harvard Journal of Law & Public Policy Y1 - 2004///Summer2004 VL - 27 IS - 3 M3 - Article SP - 797 EP - 815 PB - Harvard Law School Journals SN - 01934872 AB - Assesses the implications of the shift in U.S. national security strategy using legal and ethical perspective. Importance of the National Security Strategy of the United States of America (NSS) statement issued by each U.S. president; Legal and ethical framework for assessing the use of military force; Implication of the U.S. security situation following the September 11, 2001 terrorist attacks on the justification of the NSS of U.S. President George W. Bush; Emergence of international order. KW - LAW KW - SEPTEMBER 11 Terrorist Attacks, 2001 KW - INTERNATIONAL cooperation KW - NATIONAL security -- United States KW - ETHICS KW - UNITED States -- Military policy KW - UNITED States KW - BUSH, George W. (George Walker), 1946- N1 - Accession Number: 15267775; Cook, Martin L. 1; Affiliations: 1: Professor, Department of Philosophy, United States Air Force Academy; Issue Info: Summer2004, Vol. 27 Issue 3, p797; Thesaurus Term: LAW; Thesaurus Term: SEPTEMBER 11 Terrorist Attacks, 2001; Thesaurus Term: INTERNATIONAL cooperation; Subject Term: NATIONAL security -- United States; Subject Term: ETHICS; Subject Term: UNITED States -- Military policy; Subject: UNITED States; NAICS/Industry Codes: 928110 National Security; People: BUSH, George W. (George Walker), 1946-; Number of Pages: 19p; Document Type: Article; Full Text Word Count: 7586 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=15267775&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Sayegha, Lisa AU - Anthony, William P. AU - Perrewé, Pamela L. T1 - Managerial decision-making under crisis: The role of emotion in an intuitive decision process. JO - Human Resource Management Review JF - Human Resource Management Review Y1 - 2004/06// VL - 14 IS - 2 M3 - Article SP - 179 EP - 200 SN - 10534822 AB - Today's manager is increasingly expected to make decisions based on paradigms that depart from traditional rationality and information processing models. This is particularly so under crisis conditions, where there is little time and information available for choice consideration. While the management literature has recently seen more empirical and theoretical support for intuition and tacit knowledge in the decision process, the role of emotion has not played a prominent role. This article advances management decision theory by proposing a conceptual model of managerial decision-making that underscores the role of emotions in an intuitive decision process under crisis conditions. The article holds particular salience to human resource managers, as they are the custodians of decisions made about people in the organization. These decisions, by definition, carry much weight in both ethical and financial terms, and their importance is magnified immeasurably under crisis conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Resource Management Review is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DECISION making KW - PROBLEM solving KW - EXECUTIVES KW - PERSONNEL management KW - CRISES KW - EMOTIONS (Psychology) KW - Crisis KW - Decision-making KW - Emotion N1 - Accession Number: 13941126; Sayegha, Lisa 1; Email Address: Iisa.sayegh@brooks.af.mil; Anthony, William P. 2; Email Address: banthon@cob.fsu.edu; Perrewé, Pamela L. 2; Email Address: pperrew@cob.fsu.edu; Affiliations: 1: Air Force Research Laboratory, 8262 Hawks Road, Brooks City-Base, TX 78235-514 7, USA; 2: College of Business, Florida State University, Tallahassee, FL 32306-1110, USA.; Issue Info: Jun2004, Vol. 14 Issue 2, p179; Thesaurus Term: DECISION making; Thesaurus Term: PROBLEM solving; Thesaurus Term: EXECUTIVES; Thesaurus Term: PERSONNEL management; Subject Term: CRISES; Subject Term: EMOTIONS (Psychology); Author-Supplied Keyword: Crisis; Author-Supplied Keyword: Decision-making; Author-Supplied Keyword: Emotion; NAICS/Industry Codes: 923130 Administration of Human Resource Programs (except Education, Public Health, and Veterans' Affairs Programs); NAICS/Industry Codes: 541612 Human Resources Consulting Services; Number of Pages: 22p; Document Type: Article L3 - 10.1016/j.hrmr.2004.05.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=13941126&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Lopez, Mike R. AU - Gilgenbach, Ronald M. AU - Jones, Michael C. AU - White, William M. AU - Jordan, David W. AU - Johnston, Mark D. AU - Strickler, Trevor S. AU - Neculaes, V. Bogdan AU - Yue Ying Lau AU - Spencer, Thomas A. AU - Haworth, Michael D. AU - Cartwright, Keith L. AU - Mardahl, Peter J. AU - Luginsland, John W. AU - Price, David T1 - Relativistic Magnetron Driven by a Microsecond B-Beam Accelerator With a Ceramic Insulator. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/06//Jun2004 Part 1 of 2 VL - 32 IS - 3 M3 - Article SP - 1171 EP - 1180 SN - 00933813 AB - Relativistic magnetron experiments performed on a six-cavity device have generated over 300 MW total microwave power near 1 GHz. These experiments were driven by the long- pulse electron beam from an accelerator with parameters as follows: voltage of -300 kV, current of 1-JO kA, and typical pulse-length of 0.5 μs. This paper reports investigations of high-power microwave generation, mode competition, and pulse shortening for the relativistic magnetron with a ceramic insulator compared to a plastic insulator. The ceramic insulator improves the vacuum by a factor of ten (to 107 torr range) and flattens the voltage of the accelerator. Relativistic magnetron performance with the ceramic insulator shows increased microwave power and pulselength over the plastic insulator. Effects of RF breakdown in the extraction wave- guide on peak microwave power and pulselength are also investigated by utilizing SF6 in one or both of the extraction waveguides. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON beams KW - WAVEGUIDES KW - GYRATORS KW - ELECTRIC apparatus & appliances KW - MICROWAVE transmission lines KW - RADIO technology -- Equipment & supplies N1 - Accession Number: 14268247; Lopez, Mike R. 1; Gilgenbach, Ronald M. 2; Email Address: rongilg@umich.edu; Jones, Michael C. 2; White, William M. 2; Jordan, David W. 2; Johnston, Mark D. 2; Strickler, Trevor S. 2; Neculaes, V. Bogdan 2; Yue Ying Lau 2; Spencer, Thomas A. 3; Haworth, Michael D. 3; Cartwright, Keith L. 3; Mardahl, Peter J. 3; Luginsland, John W. 4; Price, David 5; Affiliations: 1: Sandia National Laboratories Albuquerque, NM 7l85-1193 USA.; 2: Intense Energy Beam Interaction Laboratory, Department of Nuclear Engineering and Radiological Sciences. University of Michigan, Ann Arbor. Ml 48 109-2104 USA.; 3: Air Force Research Laboratory, Phillips Site, Kirtland AFB, NM 87117-5776 USA.; 4: Numerex, Ithaca, NY 14850 USA.; 5: Titan Corporation, San Leandro, CA 94577 USA.; Issue Info: Jun2004 Part 1 of 2, Vol. 32 Issue 3, p1171; Subject Term: ELECTRON beams; Subject Term: WAVEGUIDES; Subject Term: GYRATORS; Subject Term: ELECTRIC apparatus & appliances; Subject Term: MICROWAVE transmission lines; Subject Term: RADIO technology -- Equipment & supplies; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 811412 Appliance Repair and Maintenance; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; NAICS/Industry Codes: 335990 All other electrical equipment and component manufacturing; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 443143 Appliance, television and other electronics stores; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TPS.2004.828898 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=14268247&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Shiffler, Donald A. AU - Luginsland, J. AU - Ruebush, M. AU - Lacour, M. AU - Golby, K. AU - Cartwright, K. AU - Haworth, M. AU - Spencer, T. T1 - Emission Uniformity and Shot-to-Shot Variation in Cold Field Emission Cathodes. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/06//Jun2004 Part 1 of 2 VL - 32 IS - 3 M3 - Article SP - 1262 EP - 1266 SN - 00933813 AB - High-power microwave tubes require currents and voltages generally in excess of 1 kA and 100 kV. In the past, these system requirements led to the use of single shot machines, with repetition rates well under 1 Hz. With advances in pulsed power, the Air Force Research Laboratory recently began to investigate the performance of field emission diodes at repetition rate operation. Greater numbers of shots allowed better accuracy in measurements and the application of better statistics to experimental data. In this paper, we report on new measurements that, with better experimental accuracy, show the statistical correlation between emission uniformity and the shot-to-shot variation in diode current. We report on a comparison to particle-in-cell simulations. These comparisons show the importance of randomly occurring nonemission regions on the cathode surface in dictating the spread in current data. These results imply that uniformity, in addition to playing an important role in any electron interaction with radiation, also affects the current stability for any device using these cathodes. Finally, these experiments show that for repetition rate machines, shot-to-shot variation quantified in terms of Gaussian distributions characterized by a standard deviation and skewness, provide a diagnostic capable of inferring beam uniformity in situations where direct uniformity diagnostics prove extremely difficult or impractical. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REGRESSION analysis KW - GAUSSIAN distribution KW - ELECTRON tubes KW - DIODES KW - MICROWAVE devices KW - CATHODES N1 - Accession Number: 14268258; Shiffler, Donald A. 1; Email Address: Don.Shiffler@kirtland.al.mil; Luginsland, J. 2; Ruebush, M. 3; Email Address: mdruebu@sandia.gov; Lacour, M. 2; Golby, K. 2; Cartwright, K. 1; Haworth, M. 1; Spencer, T. 1; Affiliations: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.; 2: Science Applications International Corporation, Albuquerque. NM 87106 USA.; 3: Sandia National Laboratory, Albuquerque, NM 87185 USA.; Issue Info: Jun2004 Part 1 of 2, Vol. 32 Issue 3, p1262; Thesaurus Term: REGRESSION analysis; Thesaurus Term: GAUSSIAN distribution; Subject Term: ELECTRON tubes; Subject Term: DIODES; Subject Term: MICROWAVE devices; Subject Term: CATHODES; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 327212 Other Pressed and Blown Glass and Glassware Manufacturing; NAICS/Industry Codes: 327215 Glass Product Manufacturing Made of Purchased Glass; NAICS/Industry Codes: 327214 Glass manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TPS.2004.827608 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=14268258&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 106572024 T1 - Initial experience with mass immunization as a bioterrorism countermeasure. AU - Folio LR AU - Lahti RL AU - Cockrum DS AU - Bills S AU - Younker MR Y1 - 2004/06//2004 Jun N1 - Accession Number: 106572024. Language: English. Entry Date: 20050128. Revision Date: 20150711. Publication Type: Journal Article; CEU; exam questions; questionnaire/scale. Journal Subset: Biomedical; Peer Reviewed; USA. Instrumentation: Immunizations Screening Questionnaire. NLM UID: 7503065. KW - Bioterrorism -- Prevention and Control -- Iraq KW - Anthrax Vaccines -- Administration and Dosage -- Iraq KW - Military Personnel -- Iraq KW - Education, Continuing (Credit) KW - Iraq KW - Drug Storage -- Methods KW - Patient Attitudes KW - Program Implementation KW - Program Development KW - Questionnaires SP - 240 EP - 268 JO - JAOA: Journal of the American Osteopathic Association JF - JAOA: Journal of the American Osteopathic Association JA - JAOA J AM OSTEOPATH ASSOC VL - 104 IS - 6 CY - Chicago, IL 60611, Illinois PB - American Osteopathic Association AB - Anthrax vaccine was administered to approximately 5000 individuals at a deployed location near Iraq in a 1-week period. This report describes the planning and administrative process to initiate such a program, with a snapshot view of the first week of immunization. Compliance with this program was important to best protect troops in this high-threat region. The authors share their experience and detail the process of handling refusals, as these are most likely to reveal themselves at the beginning of an immunization program. The program resulted in a compliance rate of 98%. With increased terrorist threats and widespread availability of biologic agents of mass destruction, experiences with such immunization programs should be described in the literature and analyzed in anticipation of similar programs in the future. SN - 0098-6151 AD - Science Technology Division, Headquarters United States Air Force, Three Skyline Place, 5201 Leesburg Pike, Ste 1400, Falls Church, VA 22041-3203 U2 - PMID: 15233330. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106572024&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - GEN AU - Gibbs, John P. AU - Narayanan, Latha AU - Mattie, David R. T1 - Letters to the Editor. JO - Journal of Occupational & Environmental Medicine JF - Journal of Occupational & Environmental Medicine Y1 - 2004/06// VL - 46 IS - 6 M3 - Letter SP - 516 EP - 517 SN - 10762752 AB - Presents a letter to the editor of the periodical concerning the article by Crump et.al. on the development of a laboratory assay for perchlorate. KW - Microbiological assay KW - Letters to the editor N1 - Accession Number: 13671344; Gibbs, John P. 1; Narayanan, Latha 2; Mattie, David R. 3; Affiliations: 1: Kerr-McGee Corporation; 2: Geo-Centers, Inc., Wright-Patterson AFB, OH; 3: Air Force Research Laboratory (AFRL/HEPB), Wright-Patterson AFB, OH; Issue Info: Jun2004, Vol. 46 Issue 6, p516; Thesaurus Term: Microbiological assay; Subject Term: Letters to the editor; Number of Pages: 2p; Illustrations: 2 Graphs; Document Type: Letter L3 - 10.1097/01.jom.0000128149.00111.42 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=13671344&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 106767574 T1 - Predicting CAD events: c-reactive protein a marker for atherosclerotic risk. AU - MacKenzie JR Y1 - 2004/06// N1 - Accession Number: 106767574. Language: English. Entry Date: 20040820. Revision Date: 20150819. Publication Type: Journal Article; CEU; exam questions; pictorial; tables/charts. Journal Subset: Core Nursing; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Nursing; Peer Reviewed; USA. NLM UID: 7603663. KW - C-Reactive Protein -- Blood KW - Coronary Disease -- Prevention and Control KW - Age Factors KW - Arteriosclerosis -- Physiopathology KW - C-Reactive Protein -- Classification KW - Cardiovascular Risk Factors -- Prevention and Control KW - Coronary Disease -- Nursing KW - Diagnosis, Laboratory KW - Education, Continuing (Credit) KW - Female KW - Hyperlipidemia -- Complications KW - Lipoproteins, LDL -- Blood KW - Male KW - Monocytes -- Physiology KW - Nurse Practitioners KW - Reference Values SP - 14 EP - 24 JO - Nurse Practitioner JF - Nurse Practitioner JA - NURSE PRACT VL - 29 IS - 6 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - Atherosclerosis has become widely accepted as a chronic inflammatory disorder. C-reactive protein (CRP) is an effective biomarker for inflammation and has shown to be a better predictor of the risk of atherosclerotic events than lowdensity lipids. Testing for CRP provides another valuable tool for nurse practitioners to identify patients at risk for future events. SN - 0361-1817 AD - Captain, United States Air Force, Nurse Corps U2 - PMID: 15257119. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106767574&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 106676220 T1 - College coaches corner. Learning from each other: motivating athletes for competition. AU - Hedrick A AU - Rogers R AU - Bennet S AU - Wiley S Y1 - 2004/06// N1 - Accession Number: 106676220. Language: English. Entry Date: 20050712. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Motivation KW - Sporting Events -- Psychosocial Factors KW - Athletes, College -- Psychosocial Factors KW - Athletic Training -- Psychosocial Factors SP - 34 EP - 35 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 26 IS - 3 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. AB - Strength and conditioning coaches should motivate their athletes year-round in preparation for competition through individual and team goal setting, counseling personal issues, maintaining a healthy and positive environment, and keeping objectives in perspective. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106676220&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Learning From Each Other: Motivating Athletes for Competition. AU - Hedrick, Allen JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) Y1 - 2004/06// VL - 26 IS - 3 SP - 34 EP - 35 SN - 15241602 N1 - Accession Number: 13461925; Author: Hedrick, Allen: 1 email: ARHedrick@Adelphia.net. ; Author Affiliation: 1 United States Air Force Academy, Colorado Springs, Colorado; No. of Pages: 2; Language: English; Publication Type: Article; Update Code: 20040618 N2 - Strength and conditioning coaches should motivate their athletes year-round in preparation for competition through individual and team goal setting, counseling personal issues, maintaining a healthy and positive environment, and keeping objectives in perspective. ABSTRACT FROM AUTHOR KW - *COACHES (Athletics) KW - *ATHLETES KW - *SPORTS personnel KW - *MOTIVATION (Psychology) KW - *COUNSELING UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=13461925&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 2004-16825-002 AN - 2004-16825-002 AU - Sayegh, Lisa AU - Anthony, William P. AU - Perrewé, Pamela L. T1 - Managerial decision-making under crisis: The role of emotion in an intuitive decision process. JF - Human Resource Management Review JO - Human Resource Management Review Y1 - 2004/06// VL - 14 IS - 2 SP - 179 EP - 199 CY - Netherlands PB - Elsevier Science SN - 1053-4822 AD - Sayegh, Lisa, Air Force Research Laboratory, 8262 Hawks Road, Brooks City-Base, TX, US, 78235-5147 N1 - Accession Number: 2004-16825-002. Partial author list: First Author & Affiliation: Sayegh, Lisa; Air Force Research Laboratory, Brooks City-Base, TX, US. Release Date: 20050321. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Crises; Emotions; Management Decision Making; Decision Theory; Human Resource Management. Minor Descriptor: Management Personnel. Classification: Management & Management Training (3640). Population: Human (10). References Available: Y. Page Count: 21. Issue Publication Date: Jun, 2004. AB - Today's manager is increasingly expected to make decisions based on paradigms that depart from traditional rationality and information processing models. This is particularly so under crisis conditions, where there is little time and information available for choice consideration. While the management literature has recently seen more empirical and theoretical support for intuition and tacit knowledge in the decision process, the role of emotion has not played a prominent role. This article advances management decision theory by proposing a conceptual model of managerial decision-making that underscores the role of emotions in an intuitive decision process under crisis conditions. The article holds particular salience to human resource managers, as they are the custodians of decisions made about people in the organization. These decisions, by definition, carry much weight in both ethical and financial terms, and their importance is magnified immeasurably under crisis conditions. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - managerial decision-making KW - intuitive decision making KW - crisis KW - emotion KW - management decision theory KW - human resource managers KW - 2004 KW - Crises KW - Emotions KW - Management Decision Making KW - Decision Theory KW - Human Resource Management KW - Management Personnel KW - 2004 DO - 10.1016/j.hrmr.2004.05.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-16825-002&site=ehost-live&scope=site UR - pperrew@cob.fsu.edu UR - banthon@cob.fsu.edu UR - lisa.sayegh@brooks.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-02653-007 AN - 2005-02653-007 AU - Powell, Shawn AU - McCone, Dave T1 - Treatment of Adjustment Disorder With Anxiety: A September 11, 2001, Case Study With a 1-Year Follow-Up. JF - Cognitive and Behavioral Practice JO - Cognitive and Behavioral Practice JA - Cogn Behav Pract Y1 - 2004///Sum 2004 VL - 11 IS - 3 SP - 331 EP - 336 CY - US PB - Association for Advancement of Behavior Therapy SN - 1077-7229 AD - Powell, Shawn, PO Box 2914, Cheyenne, WY, US, 82003 N1 - Accession Number: 2005-02653-007. Partial author list: First Author & Affiliation: Powell, Shawn; United States Air Force Academy, US. Other Publishers: Elsevier Science. Release Date: 20050404. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Adjustment Disorders; Anxiety; Cognitive Behavior Therapy; Terrorism. Classification: Cognitive Therapy (3311). Population: Human (10); Male (30). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Tests & Measures: Outcome Questionnaire-45. Methodology: Clinical Case Study; Empirical Study; Followup Study. References Available: Y. Page Count: 6. Issue Publication Date: Sum 2004. AB - This article describes the application of cognitive behavioral therapy in the treatment of a 20-year-old White male manifesting an adjustment disorder with anxiety, who initially presented on September 11, 2001, following the terrorist attacks. The initial treatment regime lasted 8 weeks. In addition, follow-up sessions at 6, 11, and 12 months were conducted. A combination of 4 cognitive behavioral therapy techniques, including cognitive impulse control, challenging irrational beliefs, stress management skills, and relaxation training, was applied. To determine treatment efficacy, the Outcome Questionnaire-45 (Lambert & Burlingame, 1996) was administered 6 times in a pre-, during, and posttreatment fashion. Treatment results suggest that this combination of techniques was effective in reducing the client's anxiety and increasing his functioning. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - adjustment disorder KW - anxiety KW - terrorist attacks KW - cognitive behavior therapy KW - treatment efficacy KW - 2004 KW - Adjustment Disorders KW - Anxiety KW - Cognitive Behavior Therapy KW - Terrorism KW - 2004 DO - 10.1016/S1077-7229(04)80047-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-02653-007&site=ehost-live&scope=site UR - shawndp@yahoo.com DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2004-14415-004 AN - 2004-14415-004 AU - Schaub, Gary Jr. T1 - Deterrence, Compellence, and Prospect Theory. T3 - Prospect theory in political science and political psychology JF - Political Psychology JO - Political Psychology JA - Polit Psychol Y1 - 2004/06// VL - 25 IS - 3 SP - 389 EP - 411 CY - United Kingdom PB - Blackwell Publishing SN - 0162-895X SN - 1467-9221 AD - Schaub, Gary Jr., School of Advanced Air and Space Studies, Maxwell Air Force Base, 600 Chennult Circle, AL, US, 36112-6424 N1 - Accession Number: 2004-14415-004. Partial author list: First Author & Affiliation: Schaub, Gary Jr.; School of Advanced Air and Space Studies, Air University, United States Air Force, AL, US. Other Publishers: Wiley-Blackwell Publishing Ltd. Release Date: 20040809. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Politics; Theories; Utility Theory; Prospect Theory. Classification: Political Processes & Political Issues (2960). Population: Human (10). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 23. Issue Publication Date: Jun, 2004. AB - Deterrence and compellence couple demands for inaction and action, respectively, to a threat of sanctions. Conventional wisdom holds that deterrence requires less coercive effort than compellence, yet expected utility theory contradicts this claim. Only if exogenous factors affect these situations in a systematic and asymmetrical manner will the claim hold within expected utility theory. Prospect theory provides a systematic and endogenous account for this claim. Experimental findings suggest the degree of effort required to obtain compliance in comparable deterrence and compellence situations. Deterrence is 'easier' than compellence, but this relationship is variable. Deterrence requires less effort than expected, and the relative effort it requires decreases substantially as the stakes demanded and costs threatened grow. Compellence requires more effort than expected, and the relative effort it requires decreases slightly as the stakes demanded and costs threatened grow. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - prospect theory KW - expected utility theory KW - deterrence compellence KW - 2004 KW - Politics KW - Theories KW - Utility Theory KW - Prospect Theory KW - 2004 DO - 10.1111/j.1467-9221.2004.00377.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-14415-004&site=ehost-live&scope=site UR - Gary.Schaub@maxwell.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Burke, S. A. AU - Wright, J. D. AU - Robinson, M. K. AU - Bronk, B. V. AU - Warren, R. L. T1 - Detection of Molecular Diversity in Bacillus atrophaeus by Amplified Fragment Length Polymorphism Analysis. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2004/05// VL - 70 IS - 5 M3 - Article SP - 2786 EP - 2790 SN - 00992240 AB - Phenotypically, Bacillus atrophaeus is indistinguishable from the type strain of Bacillus subtilis except by virtue of pigment production on certain media. Several pigmented variants of B. subtilis have been reclassified as B. atrophaeus, but several remain ambiguous in regard to their taxonomic placement. In this study, we examined strains within the American Type Culture Collection originally deposited as Bacillus globigii, B. subtilis var. niger, or Bacillus niger using 16S rRNA gene sequencing and amplified fragment length polymorphism (AFLP) analysis to determine the level of molecular diversity among these strains and their relationship with closely related taxa. The 16S rRNA gene sequences revealed little variation with one base substitution between the B. atrophaeus type strain ATCC 49337 and the other pigmented bacilli. AFLP analysis produced high-quality DNA fingerprints with sufficient polymorphism to reveal strain-level variation. Cluster analysis of Dice similarity coefficients revealed that three strains, ATCC 31028, ATCC 49760, and ATCC 49822, are much more closely related to B. atrophaeus than to B. subtilis and should be reclassified as B. atrophaeus. A very closely related cluster of B. atrophaeus strains was also observed; this cluster was genetically distinct from the type strain. The level of variation between the two groups was approximately the same as the level of variation observed between members of the two B. subtilis subspecies, subtilis and spizizenii. It is proposed that the cluster of strains typified by ATCC 9372 be designated a new subspecies, B. atrophaeus subsp, globigii. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CLASSIFICATION KW - Bacillus (Bacteria) KW - Genetic polymorphisms KW - Subtilisins KW - Biological pigments KW - Biology KW - Genes N1 - Accession Number: 13273925; Burke, S. A. 1; Email Address: burkes@battelle.org; Wright, J. D. 2; Robinson, M. K. 1; Bronk, B. V. 3; Warren, R. L. 1; Affiliations: 1: Battelle Dugway Operations, Dugway, Utah 84022; 2: U.S. Army Dugway Proving Ground, Dugway, Utah 84022; 3: Air Force Research Laboratory, U.S. Army Soldier and Biological Chemical Command, Aberdeen Proving Ground, Maryland 21010-5424; Issue Info: May2004, Vol. 70 Issue 5, p2786; Thesaurus Term: CLASSIFICATION; Subject Term: Bacillus (Bacteria); Subject Term: Genetic polymorphisms; Subject Term: Subtilisins; Subject Term: Biological pigments; Subject Term: Biology; Subject Term: Genes; Number of Pages: 5p; Illustrations: 1 Chart; Document Type: Article L3 - 10.1128/AEM.70.5.2786-2790.2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=13273925&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Reich, Gregory W. AU - Raveh, Daniella E. AU - Zink, P. Scott T1 - Application of Active-Aeroelastic-Wing Technology to a Joined-Wing Sensorcraft. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2004/05//May/Jun2004 Y1 - 2004/05//May/Jun2004 VL - 41 IS - 3 M3 - Article SP - 594 EP - 602 SN - 00218669 AB - A study was conducted to investigate the applicability of active-aeroelastic-wing technology to a joined-wing sensorcraft configuration for the purpose of minimization of embedded antenna deformations. The study was performed using a half-span aeroelastic model of a joined-wing sensorcraft design with six control surfaces. These control surfaces were used concurrently to minimize the elastic deformations at structural nodes corresponding to the antenna tip, while trimming the aircraft to a required 1-g level flight, simultaneously satisfying constraints on the allowable hinge moments and maximum control surface deflections. Comparison of antenna displacements for the optimized and baseline cases (using one control surface at a time) demonstrates that the active-aeroelastic-wing concept can be used to significantly reduce the antenna displacements, potentially improving the performance of the embedded antenna system. Aeroelastic displacements from the trim-optimized system are an order-of-magnitude smaller than those of the baseline. These results demonstrate the feasibility of active-aeroelastic-wing technology for the improvement of embedded antenna performance caused by structural deformations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - AEROELASTICITY KW - AERODYNAMICS KW - ELASTIC waves KW - AERONAUTICS N1 - Accession Number: 13783489; Source Information: May/Jun2004, Vol. 41 Issue 3, p594; Subject Term: AIRPLANE wings; Subject Term: AEROELASTICITY; Subject Term: AERODYNAMICS; Subject Term: ELASTIC waves; Subject Term: AERONAUTICS; Subject Term: ; Number of Pages: 9p; ; Illustrations: 9 Diagrams, 9 Charts; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=13783489&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Osborn, Russell F. AU - Kota, Sridhar AU - Hetrick, Joel A. AU - Geister, Donald E. AU - Tilmann, Carl P. AU - Jinyong Joo T1 - Active Flow Control Using High-Frequency Compliant Structures. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2004/05//May/Jun2004 Y1 - 2004/05//May/Jun2004 VL - 41 IS - 3 M3 - Article SP - 603 EP - 609 SN - 00218669 AB - Flow control to avoid or delay boundary-layer separation on a wing can dramatically improve the performance of most air vehicles in strategic parts of their individual flight envelopes. Previous aerodynamic experiments and computations have indicated that unsteady excitation at the appropriate frequency can delay boundary-layer separation and wing stall more effectively than steady flow perturbations and that these unsteady perturbations, when generated in an optimum frequency range, maximize the extent of flow separation control for specific flight conditions. Preliminary aerodynamic experiments have been performed on a deflected trailing-edge flap to evaluate turbulent boundary layer separation control with a deployable high-frequency micro-vortex-generator (HiMVG) array. The HiMVG design tested incorporated emerging displacement amplification compliant structures technology that deployed micro-vortex-generator blades 5 mm, through a range of frequencies between 30 and 70 Hz, when driven by an appropriately sized voice-coil actuator. The mechanical HiMVG system tested produced an oscillatory stream of boundary-layer embedded vortices that proved effective in mitigating flow separation on the upper surface of a deflected flap when a similar array of static vortex generators could not. A second-generation HiMVG design driven by a piezoelectric actuator was also conceptualized. Candidate flow control applications for this second-generation design are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES -- Flight testing KW - FLUID dynamics KW - VORTEX motion KW - FLIGHT KW - AERODYNAMICS KW - AERONAUTICS N1 - Accession Number: 13783490; Source Information: May/Jun2004, Vol. 41 Issue 3, p603; Subject Term: AIRPLANES -- Flight testing; Subject Term: FLUID dynamics; Subject Term: VORTEX motion; Subject Term: FLIGHT; Subject Term: AERODYNAMICS; Subject Term: AERONAUTICS; Subject Term: ; Number of Pages: 7p; ; Illustrations: 7 Black and White Photographs, 3 Diagrams, 3 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=13783490&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - He, P. AU - Wilson, G. AU - Russell, C. T1 - Removal of ocular artifacts from electro-encephalogram by adaptive filtering. JO - Medical & Biological Engineering & Computing JF - Medical & Biological Engineering & Computing Y1 - 2004/05// VL - 42 IS - 3 M3 - Article SP - 407 EP - 412 PB - Springer Science & Business Media B.V. SN - 01400118 AB - The electro-encephalogram (EEG) is useful for clinical diagnosis and in biomedical research. EEG signals, however, especially those recorded from frontal channels, often contain strong electro-oculogram (EOG) artifacts produced by eye movements. Existing regression-based methods for removing EOG artifacts require various procedures for preprocessing and calibration that are inconvenient and time-consuming. The paper describes a method for removing ocular artifacts based on adaptive filtering. The method uses separately recorded vertical EOG and horizontal EOG signals as two reference inputs. Each reference input is first processed by a finite impulse response filter of length M (M=3 in this application) and then subtracted from the original EEG. The method is implemented by a recursive least-squares algorithm that includes a forgetting factor (λ = 0.9999 in this application) to track the non-stationary portion of the EOG signals. Results from experimental data demonstrate that the method is easy to implement and stable, converges fast and is suitable for on-line removal of EOG artifacts. The first three coefficients (up to M = 3) were significantly larger than any remaining coefficients. [ABSTRACT FROM AUTHOR] AB - Copyright of Medical & Biological Engineering & Computing is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REGRESSION analysis KW - MEDICAL research KW - ADAPTIVE filters KW - ELECTROENCEPHALOGRAPHY KW - BRAIN -- Radiography KW - ELECTROOCULOGRAPHY KW - Adaptive filtering KW - Artifact removal KW - EEG KW - EOG N1 - Accession Number: 14048500; He, P. 1; Email Address: phe@cs.wright.edu; Wilson, G. 2; Russell, C. 2; Affiliations: 1: Department of Biomedical, Industrial & Human Factors Engineering, Wright State University, Dayton, Ohio, USA; 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio, USA; Issue Info: May2004, Vol. 42 Issue 3, p407; Thesaurus Term: REGRESSION analysis; Subject Term: MEDICAL research; Subject Term: ADAPTIVE filters; Subject Term: ELECTROENCEPHALOGRAPHY; Subject Term: BRAIN -- Radiography; Subject Term: ELECTROOCULOGRAPHY; Author-Supplied Keyword: Adaptive filtering; Author-Supplied Keyword: Artifact removal; Author-Supplied Keyword: EEG; Author-Supplied Keyword: EOG; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 6p; Illustrations: 1 Diagram, 1 Chart, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=14048500&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 2004-13670-005 AN - 2004-13670-005 AU - Hardin, Erin E. AU - Leong, Frederick T. L. AU - Bhagwat, Aditya A. T1 - Factor Structure of the Self-Construal Scale Revisited: Implications for the Multidimensionality of Self-Construal. JF - Journal of Cross-Cultural Psychology JO - Journal of Cross-Cultural Psychology JA - J Cross Cult Psychol Y1 - 2004/05// VL - 35 IS - 3 SP - 327 EP - 345 CY - US PB - Sage Publications SN - 0022-0221 SN - 1552-5422 AD - Hardin, Erin E., Department of Psychology, Texas Tech University, P.O. Box 42051, Lubbock, TX, US, 79409 N1 - Accession Number: 2004-13670-005. Partial author list: First Author & Affiliation: Hardin, Erin E.; Texas Tech University, Lubbock, TX, US. Release Date: 20040524. Correction Date: 20160114. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Conference Information: Asian American Psychological Association National Convention, Aug, 2000, Washington, DC, US. Conference Note: An earlier version of this article was presented at the aforementioned conference. Major Descriptor: Cross Cultural Differences; Factor Structure; Measurement; Self-Concept; Self-Perception. Classification: Personality Scales & Inventories (2223); Personality Traits & Processes (3120). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Suinn-Lew Asian Self-Identity Acculturation Scale DOI: 10.1037/t03836-000; Self-Construal Scale. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 19. Issue Publication Date: May, 2004. AB - The Self-Construal Scale (SCS) is an important measure of self-construal. However, new data are needed on the structure of the SCS using more appropriate statistical techniques and investigating the existence of multiple (i.e., more than two) factors. Exploratory and confirmatory factor analyses of data from two groups of European American and Asian/Asian American college students reveal six factors underlying items on the SCS that seem to represent four specific aspects of Independence and two specific aspects of Interdependence. Results also provide initial support for the relative usefulness of these new factors in exploring between-groups differences. Implications for the conceptualization of self-construal and future research are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - factor structure KW - Self-Construal Scale KW - measurement KW - self construal KW - multidimensional structure KW - cross cultural differences KW - 2004 KW - Cross Cultural Differences KW - Factor Structure KW - Measurement KW - Self-Concept KW - Self-Perception KW - 2004 DO - 10.1177/0022022104264125 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-13670-005&site=ehost-live&scope=site UR - UR - ORCID: 0000-0003-4058-1068 UR - erin.hardin@ttu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Renard, Jean J. AU - Calidonna, Sheryl E. AU - Henley, Michael V. T1 - Fate of ammonia in the atmosphere—a review for applicability to hazardous releases JO - Journal of Hazardous Materials JF - Journal of Hazardous Materials Y1 - 2004/04/30/ VL - 108 IS - 1/2 M3 - Article SP - 29 SN - 03043894 AB - The physical and chemical mechanisms responsible for the removal of ammonia from the atmosphere have been reviewed. Capture by atmospheric moisture (clouds, rain, fog), surface water (rivers, lakes, seas), and deposition on vegetation and soil constitute the main pathways for ammonia removal from the troposphere. Ammonia catalyzes the atmospheric oxidation of sulfur dioxide to sulfur trioxide and reacts rapidly with acidic components of the atmosphere (sulfuric, nitric, and hydrochloric acids). The ammonium salts formed are the main components of smog aerosols and thus affect the opacity of the atmosphere and the earth radiation budget. Slow oxidation of ammonia in the atmosphere plays only a minor role in its removal. The data obtained for ammonia reactions under normal atmospheric conditions are generally applicable to model chemical reactions occurring during massive release of ammonia in the atmosphere, provided the impact of high ammonia concentration on the mass transfer processes that control some of these reactions, are taken into account. [Copyright &y& Elsevier] AB - Copyright of Journal of Hazardous Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Ammonia KW - Atmospheric chemistry KW - Oxidation KW - Chemical reactions KW - Catastrophic release KW - Modeling KW - Plume dispersion N1 - Accession Number: 12777214; Renard, Jean J. 1; Calidonna, Sheryl E. 1; Henley, Michael V. 2; Email Address: mike.henley@tyndall.af.mil; Affiliations: 1: Applied Research Associates, Inc., Airbase Technologies Division, 139 Barnes Drive, Suite 2, Tyndall AFB, FL 32403-5323, USA; 2: Air Force Research Laboratory, Airbase Technologies Division, 139 Barnes Drive, Suite 2, Tyndall AFB, FL 32403-5323, USA; Issue Info: Apr2004, Vol. 108 Issue 1/2, p29; Thesaurus Term: Ammonia; Thesaurus Term: Atmospheric chemistry; Thesaurus Term: Oxidation; Subject Term: Chemical reactions; Author-Supplied Keyword: Catastrophic release; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Plume dispersion; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; NAICS/Industry Codes: 325311 Nitrogenous Fertilizer Manufacturing; NAICS/Industry Codes: 325612 Polish and Other Sanitation Good Manufacturing; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 32p; Document Type: Article L3 - 10.1016/j.jhazmat.2004.01.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12777214&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Brady-Roberts, Eletha G. AU - Mattie, David AU - Dodd, Darol E. T1 - Preface. JO - Journal of Toxicology & Environmental Health: Part A JF - Journal of Toxicology & Environmental Health: Part A Y1 - 2004/04/23/ VL - 67 IS - 8-10 M3 - Article SP - 607 EP - 610 SN - 15287394 AB - Introduces a series of articles on toxicology and risk assessment presented at the 2003 Conference on Toxicology and Risk Assessment in Ohio. Development of regulation for water contaminants; Physiological models for predicting emergency health hazards; Tools for assessing microbial risk. KW - Risk assessment KW - Toxicology KW - Water pollution KW - Health risk assessment KW - Emergency management KW - Microbial contamination N1 - Accession Number: 12673740; Brady-Roberts, Eletha G. 1; Email Address: roberts.eletha@epa.gov; Mattie, David 2; Email Address: david.mattie@wpafb.af.mil; Dodd, Darol E. 3; Email Address: darol.dodd@wpafb.af.mil; Affiliations: 1: National Center for Environmental Assessment Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, OH, USA; 2: Biosciences and Protection Division, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; 3: ManTech Environmental Technology, Inc., Wright-Patterson AFB, OH, USA; Issue Info: 2004, Vol. 67 Issue 8-10, p607; Thesaurus Term: Risk assessment; Thesaurus Term: Toxicology; Thesaurus Term: Water pollution; Thesaurus Term: Health risk assessment; Thesaurus Term: Emergency management; Thesaurus Term: Microbial contamination; NAICS/Industry Codes: 624230 Emergency and Other Relief Services; NAICS/Industry Codes: 911290 Other federal protective services; NAICS/Industry Codes: 912190 Other provincial protective services; NAICS/Industry Codes: 913190 Other municipal protective services; NAICS/Industry Codes: 922190 Other Justice, Public Order, and Safety Activities; NAICS/Industry Codes: 923120 Administration of Public Health Programs; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12673740&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Rogers, James V. AU - Siegel, Gayl L. AU - Pollard, Dan L. AU - Rooney, Aubrie D. AU - McDougal, James N. T1 - The cytotoxicity of volatile JP-8 jet fuel components in keratinocytes JO - Toxicology JF - Toxicology Y1 - 2004/04/15/ VL - 197 IS - 2 M3 - Article SP - 112 SN - 0300483X AB - In vitro models are being used to evaluate the toxic and irritating effects of JP-8, a kerosene-based jet fuel. JP-8 components are volatile, which makes in vitro studies difficult to evaluate dose–response relationships due to changes in chemical dosimetry caused by evaporation from the exposure medium. An in vitro approach testing volatile chemical toxicity that we have recently developed was used to evaluate the toxicity of the JP-8 components m-xylene, 1-methylnaphthalene (1-MN), and n-nonane in keratinocytes. Partition coefficients were measured and used to estimate the chemical concentration in the keratinocytes. The EC50 for m-xylene and 1-MN decreased significantly (P≤0.05) at 1, 2, and 4 h. For n-nonane, no significant decreases in the EC50 values were observed over time; marginal cytotoxicity of n-nonane in keratinocytes was observed at 1 h. Within 4 h, about 75–90% of each volatile chemical was observed to be lost from the exposure medium when tissues were exposed in unsealed 24-well plates. This decrease resulted in significantly higher medium chemical concentrations needed to obtain EC50 values when compared to tissues exposed in sealed vials. This study demonstrates that chemical evaporation during in vitro exposures can significantly affect toxicological endpoint measurements. Ultimately, relating target cell chemical concentration to cellular responses in vitro could be used in determining an equivalent external dose using a biologically-based mathematical model. [Copyright &y& Elsevier] AB - Copyright of Toxicology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUEL KW - Jet planes KW - Fluids KW - Functions (Mathematics) KW - Keratinocytes KW - In vitro KW - JP-8 KW - Keratinocyte KW - Skin N1 - Accession Number: 12378663; Rogers, James V. 1; Siegel, Gayl L. 2; Pollard, Dan L. 3; Rooney, Aubrie D. 2; McDougal, James N. 4; Email Address: james.mcdougal@wright.edu; Affiliations: 1: Geo-Centers, Inc., 2856 G. Street, Wright-Patterson AFB, OH 45433, USA; 2: Air Force Research Laboratory (AFRL/HEST), 2856 G. Street, Wright-Patterson AFB, OH 45433, USA; 3: ManTech Environmental Technology, Inc., 2856 G. Street, Wright-Patterson AFB, OH 45433, USA; 4: Department of Pharmacology and Toxicology, School of Medicine, Wright State University, Dayton, OH 45435-0001, USA; Issue Info: Apr2004, Vol. 197 Issue 2, p112; Thesaurus Term: FUEL; Subject Term: Jet planes; Subject Term: Fluids; Subject Term: Functions (Mathematics); Subject Term: Keratinocytes; Author-Supplied Keyword: In vitro; Author-Supplied Keyword: JP-8; Author-Supplied Keyword: Keratinocyte; Author-Supplied Keyword: Skin; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.tox.2003.12.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12378663&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Katta, V.R. AU - Meyer, T.R. AU - Brown, M.S. AU - Gord, J.R. AU - Roquemore, W.M. T1 - Extinction criterion for unsteady, opposing-jet diffusion flames JO - Combustion & Flame JF - Combustion & Flame Y1 - 2004/04// VL - 137 IS - 1/2 M3 - Article SP - 198 SN - 00102180 AB - Dynamic flames are known to survive at strain rates that are much higher than those associated with steady-state flames. A numerical and experimental investigation is performed to aid the understanding of the extinction process associated with unsteady flames. Spatially locked unsteady flames in an opposing-jet-flow burner are established and stretched by simultaneously driving one vortex from the air side and another from the fuel side. Changes in the structure of the flame during its interaction with the incoming vortices and with the instability-generated secondary vortices are investigated using a time-dependent computational-fluid-dynamics-with-chemistry (CFDC) code known as UNICORN (UNsteady Ignition and COmbustion with ReactioNs). The combustion process is simulated using a detailed-chemical-kinetics model that incorporates 13 species and 74 reactions. Slow-moving vortices produce a wrinkled but continuous flame, while fast-moving vortices create a locally quenched flame with its edge wrapped around the merged vortical structures. In an attempt to characterize the observed quenching process, five variables—namely, air-side, fuel-side, and stoichiometric strain rates and maximum and stoichiometric scalar dissipation rates—are investigated. It is found that these characteristic parameters cannot be used to describe the quenching process associated with unsteady flames. The flow and chemical nonequilibrium states associated with the unsteady flames are responsible for changes in the extinction values of these traditional characteristic variables. However, even though the quenching values of the scalar dissipation rates increase with the velocity of the incoming vortices, the variations are much smaller than those observed in the strain rates. It is proposed that a variable that is proportional to the air-side strain rate and inversely proportional to the rate of change in the flame temperature can be used to characterize the unsteady quenching process uniquely. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Combustion KW - Fuel KW - Dynamics KW - Mechanics (Physics) KW - Diffusion flames KW - Extinction KW - Nonequilibrium flows KW - Turbulent flames KW - Unsteady flames KW - Vortex–flame interaction N1 - Accession Number: 12642974; Katta, V.R. 1; Email Address: vrkatta@erinet.com; Meyer, T.R. 1; Brown, M.S. 1; Gord, J.R. 2; Roquemore, W.M. 2; Affiliations: 1: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, OH 45440, USA; 2: Air Force Research Laboratory, Propulsion Directorate, Wright–Patterson Air Force Base, OH 45433, USA; Issue Info: Apr2004, Vol. 137 Issue 1/2, p198; Thesaurus Term: Combustion; Thesaurus Term: Fuel; Subject Term: Dynamics; Subject Term: Mechanics (Physics); Author-Supplied Keyword: Diffusion flames; Author-Supplied Keyword: Extinction; Author-Supplied Keyword: Nonequilibrium flows; Author-Supplied Keyword: Turbulent flames; Author-Supplied Keyword: Unsteady flames; Author-Supplied Keyword: Vortex–flame interaction; NAICS/Industry Codes: 454310 Fuel Dealers; NAICS/Industry Codes: 454319 Other fuel dealers; Number of Pages: 24p; Document Type: Article L3 - 10.1016/j.combustflame.2004.02.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12642974&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Fuller, D.F. AU - Terzuoli, A.J. AU - Collins, P.J. AU - Williams, R. T1 - Approach to object classification using dispersive scattering centres. JO - IEE Proceedings -- Radar, Sonar & Navigation JF - IEE Proceedings -- Radar, Sonar & Navigation Y1 - 2004/04// VL - 151 IS - 2 M3 - Article SP - 85 EP - 90 SN - 13502395 AB - The dispersive scattering centre (DSC) model characterises high-frequency backscatter from radar objects as a finite sum of localised scattering geometries distributed in range. These geometries, along with their locations, can be conveniently used as features in a one-dimensional automatic object recognition algorithm. The DSC model's type and range parameters correspond to geometry and distance features according to the geometric theory of diffraction (GTD). To demonstrate the viability of feature extraction based on the DSC model's range and type parameters, a typical object classification experiment was performed. The experimental data contained direct range radar measurements of four model fighter aircraft of similar size and shape at 0° elevation and 0°-30° azimuth. After implementing DSC model feature extraction on these data, a fully-connected two-layer neural net obtained over 98% classification accuracy. In addition, DSC model feature extraction gave an approximately 85% reduction in the number of required features when compared to the numerous range bin magnitudes used in template matching techniques. [ABSTRACT FROM AUTHOR] AB - Copyright of IEE Proceedings -- Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR in navigation KW - NAVIGATION (Aeronautics) KW - NAVIGATION KW - BACKSCATTERING KW - RADAR N1 - Accession Number: 12866574; Fuller, D.F. 1; Terzuoli, A.J. 2; Collins, P.J. 2; Williams, R. 3; Affiliations: 1: US Air Force Academy, Department of Electrical Engineering, CO, USA; 2: US Air Force Institute of Technology, Department of Electrical and Computer Engineering, OH, USA; 3: US Air Force Research Laboratory, RF Division, Wright-Patterson AFB, OH, USA; Issue Info: Apr2004, Vol. 151 Issue 2, p85; Subject Term: RADAR in navigation; Subject Term: NAVIGATION (Aeronautics); Subject Term: NAVIGATION; Subject Term: BACKSCATTERING; Subject Term: RADAR; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12866574&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Koper, Eric M. AU - Wood, William D. AU - Schneider, Stephen W. T1 - Aircraft Antenna Coupling Minimization Using Genetic Algorithms and Approximations. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2004/04// VL - 40 IS - 2 M3 - Article SP - 742 EP - 751 SN - 00189251 AB - Genetic algorithms (GM) are used to minimize antenna coupling by optimally positioning multiple radiators. Initial GA parameters are selected using a simple cylindrical model, and the results are used to optimize antenna placement on a realistic aircraft surface model. A novel aggregate objective function incorporating surface wave coupling, variance of the coupling values, and radiation pattern analysis is used. Multiple computational and experimental data are shown to validate the methodology. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL optimization KW - ALGORITHMS KW - ANTENNAS (Electronics) KW - ELECTRONIC apparatus & appliances KW - COUPLINGS (Gearing) KW - RADIATION N1 - Accession Number: 14229701; Koper, Eric M. 1; Wood, William D. 1; Schneider, Stephen W. 2; Affiliations: 1: Air Force Institute of Technology Dept. of Electrical and Computer Engineering 2950 Hobson Way Wright-Patterson AFB, OH 45433.; 2: Air Force Research Laboratory Sensors Directorate 2241 Avionics Circle Wright-Patterson AFB, OH 45433; Issue Info: Apr2004, Vol. 40 Issue 2, p742; Thesaurus Term: MATHEMATICAL optimization; Thesaurus Term: ALGORITHMS; Subject Term: ANTENNAS (Electronics); Subject Term: ELECTRONIC apparatus & appliances; Subject Term: COUPLINGS (Gearing); Subject Term: RADIATION; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 333613 Mechanical Power Transmission Equipment Manufacturing; NAICS/Industry Codes: 333619 Other engine and power transmission equipment manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=14229701&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Xinwen Hu AU - Choi, Bo K. AU - Barnaby, Hugh J. AU - Fleetwood, Daniel M. AU - Schrimpf, Ronald D. AU - Lee, Sungchul AU - S. Shojah-Ardalan, Sungchul AU - Wilkins, R. AU - Mishra, Umesh K. AU - Dettmer, Ross W. T1 - The Energy Dependence of Proton-Induced Degradation in A1GaN/GaN High Electron Mobility Transistors. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2004/04// VL - 51 IS - 2 M3 - Article SP - 293 EP - 297 SN - 00189499 AB - The effects of proton irradiation at various energies are reported for AlGaN/GaN high electron mobility transistors (HEMTs). The devices exhibit little degradation when irradiated with 15-, 40-, and 105-MeV protons at fluences up to 1013 cm-2, and the damage completely recovers after annealing at room temperature. For 1.8-MeV proton irradiation, the drain saturation current decreases 10.6% and the maximum transconductance decreases 6.1% at a affluence of 1012 cm-2. The greater degradation measured at the lowest proton energy considered here is caused by the much larger nonionizing energy loss of the 1.8-MeV protons. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Irradiation KW - Nonionizing radiation KW - Electron mobility KW - Energy-band theory of solids KW - Free electron theory of metals KW - Conduction band N1 - Accession Number: 12991524; Xinwen Hu 1; Email Address: xhu@spang.com; Choi, Bo K. 1; Barnaby, Hugh J. 2; Fleetwood, Daniel M. 1; Schrimpf, Ronald D. 1; Lee, Sungchul 1; S. Shojah-Ardalan, Sungchul 3; Wilkins, R. 3; Mishra, Umesh K. 4; Dettmer, Ross W. 5; Affiliations: 1: Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN 37235 USA.; 2: Electrical and Computer Engineering Department, University of Arizona, Tucson, AZ 85721 USA.; 3: NASA Center for Applied Radiation Research, Prairie View A&M University, Prairie View, TX 77446 USA.; 4: Electrical and Computer Engineering Department, University of California, Santa Barbara, CA 93106 USA.; 5: Air Force Research Laboratory (AFRL), Wright- Patterson AFB, OH 45433 USA.; Issue Info: Apr2004, Vol. 51 Issue 2, p293; Thesaurus Term: Irradiation; Thesaurus Term: Nonionizing radiation; Subject Term: Electron mobility; Subject Term: Energy-band theory of solids; Subject Term: Free electron theory of metals; Subject Term: Conduction band; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TNS.2004.825077 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12991524&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Kuo, Spencer P. AU - Kossey, Paul AU - Huynh, James T. AU - Kuo, Steven S. T1 - Amplification of Whistler Waves for the Precipitation of Trapped Relativistic Electrons in the Magnetosphere. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/04//Apr2004 Part 1 of 3 VL - 32 IS - 2 M3 - Article SP - 362 EP - 369 SN - 00933813 AB - Energetic electrons trapped in the radiation belts undergo bounce motion about the geomagnetic equator. The behaviors of the trajectories of these electrons interacting with a large amplitude whistler wave are explored, with the electron energy and wave amplitude as variable parameters. A surface of section technique is used to examine the chaoticity of the system graphically. The wave amplitude required causing an electron trajectory to be- come chaotic decreases with increasing electron energy. Once the trajectory of an electron becomes chaotic, it can wander into the loss cone and subsequently precipitates into the ionosphere and/or the upper atmosphere. This chaotic scattering process requires a threshold field for the commencement of chaotic behavior in the electron trajectories. Therefore, a loss-cone negative mass instability process to amplify whistler waves by electrons in the bulk of the energy distribution is also studied. The numerical results show that the injected whistler waves can be amplified by more than 20 dB, agreeing with the experimental results. This amplification process reduces considerably the required field intensity of injected whistler wave for the purpose of precipitating those tail electrons in the megaelectronvolt range. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - ATOMS KW - MAGNETOSPHERE KW - UPPER atmosphere KW - GEOMAGNETISM KW - MAGNETISM N1 - Accession Number: 13836272; Kuo, Spencer P. 1; Kossey, Paul 2; Huynh, James T. 3; Kuo, Steven S. 4; Affiliations: 1: Department of Electrical and Computer Engineering, Polytechnic University, NY 11201 USA.; 2: Air Force Research Laboratory, AFRL/VSBX, Hanscom AFB, MA 01731 USA.; 3: Raytheon Space and Airborne Systems, El Segundo CA 90245 USA.; 4: Northrop Grumman Space Technology, Redondo Beach, CA 90278 USA.; Issue Info: Apr2004 Part 1 of 3, Vol. 32 Issue 2, p362; Subject Term: ELECTRONS; Subject Term: ATOMS; Subject Term: MAGNETOSPHERE; Subject Term: UPPER atmosphere; Subject Term: GEOMAGNETISM; Subject Term: MAGNETISM; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TPS.2004.828459 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=13836272&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Maji, Arup K. AU - Wegner, Peter AU - Rochin, Refugio T1 - Surface Actuation of Lightweight Mirrors with Shape Memory Alloy. JO - Journal of Aerospace Engineering JF - Journal of Aerospace Engineering J1 - Journal of Aerospace Engineering PY - 2004/04// Y1 - 2004/04// VL - 17 IS - 2 M3 - Article SP - 83 EP - 89 PB - American Society of Civil Engineers SN - 08931321 AB - The ability to create lightweight mirrors that can maintain surface accuracy is a major technical challenge for future space telescopes. Processing-induced errors and surface errors due to temperature excursions and gravity sag (zero gravity in space) make it impossible to correct the surface of thin mirror face-sheets by conventional point actuators. The challenges are compounded by the requirements for mirrors to have adequate stiffness for pointing accuracy. An experimental and analytical study was conducted to explore the feasibility of correcting the shape of lightweight (≈1 kg/m2) mirrors using a “Nitinol” (nickel-titanium) shape memory alloy (SMA). Shape memory alloys are increasingly used as smart devices in aerospace applications. Their primary advantage over other smart materials (i.e., piezo-ceramics and piezo-polymers) is in their ability to undergo large strains and displacements and thus enable the development of smart mechanisms. Active shape correction is the only means of mitigating heat and zero-gravity-induced distortions in space-based optical imaging systems. The repeatability and reliability of a possible actuation system based on properties of the SMA wires were studied by testing the stress-strain and stress recovery behavior under controlled conditions. Embedded SMA wires were then used to actuate a composite beam, and the movement induced by actuation was monitored with the Moiré interferometry method. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerospace Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TELESCOPES KW - SHAPE memory alloys KW - ALLOYS KW - POLYMERS KW - STRAINS & stresses (Mechanics) N1 - Accession Number: 12525017; Source Information: Apr2004, Vol. 17 Issue 2, p83; Subject Term: TELESCOPES; Subject Term: SHAPE memory alloys; Subject Term: ALLOYS; Subject Term: POLYMERS; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ; Number of Pages: 7p; ; Illustrations: 5 Black and White Photographs, 2 Diagrams, 3 Charts, 7 Graphs; ; Document Type: Article; L3 - 10.1061/(ASCE)0893-1321(2004)17:2(83) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12525017&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Sanders, Brian AU - Crowe, Robert AU - Garcia, Ephrahim T1 - DEFENSE ADVANCED RESEARCH PROJECTS AGENCY -- SMART MATERIALS AND STRUCTURES DEMONSTRATION PROGRAM OVERVIEW. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2004/04// VL - 15 IS - 4 M3 - Article SP - 227 EP - 233 SN - 1045389X AB - In 1993 the Defense Advanced Research Projects Agency (DARPA) recognized that smart materials and structures technology provides a specific opportunity for many technological breakthroughs. A two-phased, 8-year program was initiated to develop new, affordable smart materials and structures and to demonstrate performance gains achievable in system applications. The Smart Materials and Structures Demonstration Program was initiated to achieve cultural goals as well as technological goals. Indeed, in several designs the actuators were the structures and vice versa. KW - AUTOMATIC control KW - TECHNOLOGICAL innovations KW - SMART materials KW - SHAPE memory alloys KW - ACTUATORS KW - UNITED States KW - UNITED States. Defense Advanced Research Projects Agency N1 - Accession Number: 13137824; Sanders, Brian 1; Crowe, Robert 2; Garcia, Ephrahim 3; Affiliations: 1: Air Force Research Laboratory, AFRL/ VASD, 2210 8th Street, Wright Patterson AFB, OH 45433-7531, USA.; 2: Consultant, 179 Vinson Ridge Lane, Clayton, NC 27520, USA.; 3: Cornell University, Sibley School of Mechanical and Aerospace Engineering, Upson and Grumman Halls, Ithaca, NY 14853-7501, USA.; Issue Info: Apr2004, Vol. 15 Issue 4, p227; Thesaurus Term: AUTOMATIC control; Thesaurus Term: TECHNOLOGICAL innovations; Subject Term: SMART materials; Subject Term: SHAPE memory alloys; Subject Term: ACTUATORS; Subject: UNITED States ; Company/Entity: UNITED States. Defense Advanced Research Projects Agency; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1177/1045389X04042793 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=13137824&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Sanders, Brian AU - Cowan, Dave AU - cherer, Lewes T1 - Aerodynamic Performance of the Smart Wing Control Effectors. JO - Journal of Intelligent Material Systems & Structures JF - Journal of Intelligent Material Systems & Structures Y1 - 2004/04// VL - 15 IS - 4 M3 - Article SP - 293 EP - 303 SN - 1045389X AB - This paper presents and discusses the wind tunnel results obtained during Phase 1 and Phase 2 of the Smart Wing program. A series of four tests was conducted, two in each phase. The purpose of the tests was to evaluate the performance of smart material based control effectors in representative aerodynamic environments. In Phase 1, wing twist using a Shape Memory Alloy (SMA) torque tube and smoothly contoured trailing edge surfaces enabled by SMA wires were evaluated on a semi-span, 16% scale model of a typical fighter wing. The focus of Phase 2 was to address the design and demonstration of a high-frequency, large-deflection, and smoothly contoured trailing edge control surface capable of a spanwise variation in deflection. The actuation system for this control surface was based on piezoelectric (PZT) ultrasonic motors. A smoothly contoured leading edge control surface was also built and tested using SMA wires. These designs were evaluated on a 30%, full-span model of a representative Unmanned Combat Air Vehicle (UCAV). In each wind tunnel entry comparisons were made to the performance of conventional control surfaces. Successful results included: improved aileron effectiveness at high dynamic pressures; demonstrated improvements in lateral and longitudinal control effectiveness with smoothly contoured control surfaces over conventional hinged control surfaces; continuous spanwise shape control; and, large deflections at rates over 80°/s, which is well within the desired deflection aileron rates for control of fighter aircraft. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SMART materials KW - AERODYNAMICS KW - CONFORMAL geometry KW - AEROELASTICITY KW - ELASTIC waves KW - AILERONS KW - aeroelasticity KW - conformal KW - smart KW - surfaces N1 - Accession Number: 13137830; Sanders, Brian 1; Cowan, Dave 2; cherer, Lewes 3; Affiliations: 1: Air Force Research Laboratory, AFRL/ VASD, 2210 8th Street, Wright Patterson AFB, OH 45433-7531, USA.; 2: NextGen Aeronautics, Inc., 2780 Skypark Dr., St. 400, Torrance, CA 90505, USA.; 3: Northrop Grumman Corporation, One Hornet Way, MS 9G21/ W6, El Segundo, CA 90245, USA.; Issue Info: Apr2004, Vol. 15 Issue 4, p293; Subject Term: SMART materials; Subject Term: AERODYNAMICS; Subject Term: CONFORMAL geometry; Subject Term: AEROELASTICITY; Subject Term: ELASTIC waves; Subject Term: AILERONS; Author-Supplied Keyword: aeroelasticity; Author-Supplied Keyword: conformal; Author-Supplied Keyword: smart; Author-Supplied Keyword: surfaces; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1177/1045389X04042799 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=13137830&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Wells, Mark K. AU - Vandervort, Bruce T1 - Plotting a True Course: Reflections on USAF Strategic Attack Theory and Doctrine, the Post-World War II Experience (Book). JO - Journal of Military History JF - Journal of Military History J1 - Journal of Military History PY - 2004/04// Y1 - 2004/04// VL - 68 IS - 2 M3 - Book Review SP - 659 EP - 660 SN - 08993718 AB - Reviews the book "Plotting a True Course: Reflections on USAF Strategic Attack Theory and Doctrine, the Post-World War II Experience," edited by David R. Mets and William P. Head. KW - PLOTTING a True Course: Reflections on USAF Strategic Attack Theory & Doctrine, the Post-World War II Experience (Book) KW - METS, David R., 1928- KW - HEAD, William P. KW - MILITARY strategy KW - NONFICTION N1 - Accession Number: 13227355; Source Information: Apr2004, Vol. 68 Issue 2, p659; Subject Term: PLOTTING a True Course: Reflections on USAF Strategic Attack Theory & Doctrine, the Post-World War II Experience (Book); Subject Term: METS, David R., 1928-; Subject Term: HEAD, William P.; Subject Term: MILITARY strategy; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=13227355&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 106780701 T1 - College coaches corner. Learning from each other: resolving conflicts between athletes and assistant coaches. AU - Hedrick A AU - Bennet S AU - Dahoda J AU - Rogers R Y1 - 2004/04// N1 - Accession Number: 106780701. Language: English. Entry Date: 20050712. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletes, College KW - Coaches, Athletic KW - Communication KW - Conflict Management KW - Colleges and Universities SP - 34 EP - 35 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 26 IS - 2 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. AB - At times, conflicts occur between your assistant strength and conditioning coaches and the athletes with whom they are working. As the person in charge, it is your responsibility to resolve this situation. We asked our panel of coaches what steps they take to resolve this situation. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106780701&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Learning From Each Other: Resolving Conflicts Between Athletes and Assistant Coaches. AU - Hedrick, Allen JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) Y1 - 2004/04// VL - 26 IS - 2 SP - 34 EP - 35 SN - 15241602 N1 - Accession Number: 13224531; Author: Hedrick, Allen: 1 email: ARHedrick@Adelphia.net. ; Author Affiliation: 1 United States Air Force Academy, Colorado Springs, Colorado; No. of Pages: 2; Language: English; Publication Type: Article; Update Code: 20040527 N2 - At times, conflicts occur between your assistant strength and conditioning coaches and the athletes with whom they are working. As the person in charge, it is your responsibility to resolve this situation. We asked our panel of coaches what steps they take to resolve this situation. ABSTRACT FROM AUTHOR KW - *COACHES (Athletics) KW - *ATHLETES KW - *ATHLETIC trainers KW - *PERSONAL trainers KW - CONFLICT management KW - INTERPERSONAL conflict KW - PROBLEM solving UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=13224531&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Frazier, John M. T1 - A theoretical model for simulating the outcome of mechanism based in vitro toxicity testing strategies JO - Toxicology in Vitro JF - Toxicology in Vitro Y1 - 2004/04// VL - 18 IS - 2 M3 - Article SP - 171 SN - 08872333 AB - In order to investigate the fundamental principles that influence the optimal selection of toxicity test methods for the evaluation of chemical hazards, it is useful to have a design model to explore possible alternative testing strategies. In general, our lack of detailed knowledge of the mechanisms of toxicity (including not only the early events in the interaction of chemicals with biological systems, but the sequence of events that lead to experimentally measurable toxicity) limits the development of realistic dynamic models of the toxicological process for individual chemicals. We report here the development of a theoretical model that includes two independent hypothetical mechanisms of toxicity. The mechanisms are designed to be qualitatively similar to known mechanisms of action. The model is exercised to simulate the experimental data that would be obtained for a collection of “test” and “validation” chemicals using a single or a combination of two toxicity tests. The data generated are used to evaluate the “relevance” of the testing strategy based on the two proposed in vitro toxicity tests. [Copyright &y& Elsevier] AB - Copyright of Toxicology in Vitro is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Experimental toxicology KW - Poisons KW - Analytical chemistry KW - Toxicity testing KW - Toxicity testing -- In vitro KW - Biologically based modeling KW - Mechanistic toxicology KW - Test validation N1 - Accession Number: 12038572; Frazier, John M. 1; Email Address: john.frazier@wpafb.af.mil; Affiliations: 1: Operational Toxicology Branch, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7400, USA; Issue Info: Apr2004, Vol. 18 Issue 2, p171; Thesaurus Term: Experimental toxicology; Thesaurus Term: Poisons; Thesaurus Term: Analytical chemistry; Thesaurus Term: Toxicity testing; Subject Term: Toxicity testing -- In vitro; Author-Supplied Keyword: Biologically based modeling; Author-Supplied Keyword: Mechanistic toxicology; Author-Supplied Keyword: Test validation; NAICS/Industry Codes: 325413 In-Vitro Diagnostic Substance Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/S0887-2333(03)00144-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12038572&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2004-12682-008 AN - 2004-12682-008 AU - Mantell, Elaine Orabona AU - Ortiz, Samuel O. AU - Planthara, Pamela M. T1 - What Price Prescribing? A Commentary on the Effect of Prescription Authority on Psychological Practice. T3 - Prescription Privileges JF - Professional Psychology: Research and Practice JO - Professional Psychology: Research and Practice JA - Prof Psychol Res Pr Y1 - 2004/04// VL - 35 IS - 2 SP - 164 EP - 169 CY - US PB - American Psychological Association SN - 0735-7028 SN - 1939-1323 AD - Mantell, Elaine Orabona, 102 Sherrell Place, Goldsboro, NC, US, 27534-7675 N1 - Accession Number: 2004-12682-008. Other Journal Title: Professional Psychology. Partial author list: First Author & Affiliation: Mantell, Elaine Orabona; United States Air Force, Seymour-Johnson Air Force Base, Life Skills Support Center, NC, US. Release Date: 20040412. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Clinical Psychologists; Drug Therapy; Prescribing (Drugs); Professional Identity; Psychopharmacology. Minor Descriptor: Authority. Classification: Professional Ethics & Standards & Liability (3450). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 6. Issue Publication Date: Apr, 2004. Publication History: Accepted Date: Dec 1, 2003; Revised Date: Oct 13, 2003; First Submitted Date: Jul 8, 2003. Copyright Statement: American Psychological Association. 2004. AB - The advent of the Department of Defense Psychopharmacology Demonstration Project (PDP) recently brought prescription authority into the realm of psychological practice, thereby creating a new professional role for clinicians. The benefits of prescribing are obvious, but many of the corresponding costs are not. An overview of such costs is presented, including science- and practice-based dilemmas. It is based largely but not exclusively on the experiences of a PDP graduate's own attempts to integrate such authority into actual clinical practice. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Department of Defense Psychopharmacology Demonstration Project KW - prescription authority KW - psychological practice KW - clinical psychologists KW - new professional role KW - 2004 KW - Clinical Psychologists KW - Drug Therapy KW - Prescribing (Drugs) KW - Professional Identity KW - Psychopharmacology KW - Authority KW - 2004 DO - 10.1037/0735-7028.35.2.164 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-12682-008&site=ehost-live&scope=site UR - majorabona@aol.com DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Lamberson, Donald L. AU - Duff, Edward AU - Washburn, Don AU - Holmberg, Courtney T1 - Whither High-Energy Lasers? JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2004///Spring2004 Y1 - 2004///Spring2004 VL - 18 IS - 1 M3 - Article SP - 15 EP - 24 PB - Superintendent of Documents SN - 1555385X AB - Imagine an ability to execute speed-of-light attacks against enemy forces with massive bursts of photon energy, literally incinerating the intended target. Mankind has been intrigued by the concept of directing light against a target for a very long time, and the absence of today's advanced technology did not preclude dreams and fantasies of novel weapons. Marcus Claudius Marcellus, the Roman commander, began attacking Syracuse during the second Punic War with a fleet of over 50 quinqueremes, vessels that were propelled by five banks of oars and filled with soldiers armed with all kinds of devices to overcome the city walls. KW - WAR KW - PHOTONS KW - WEAPONS KW - MILITARY personnel KW - HUMAN beings KW - TECHNOLOGY N1 - Accession Number: 12933955; Source Information: Spring2004, Vol. 18 Issue 1, p15; Subject Term: WAR; Subject Term: PHOTONS; Subject Term: WEAPONS; Subject Term: MILITARY personnel; Subject Term: HUMAN beings; Subject Term: TECHNOLOGY; Subject Term: ; Number of Pages: 10p; ; Document Type: Article; ; Full Text Word Count: 3754; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12933955&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Stone, Morley O. AU - Naik, Rajesh R. AU - Lbrott, Lawrence AU - Meltzer JR., Peter S. T1 - Electromagnetic Applications of Biomimetic Research. JO - Air & Space Power Journal JF - Air & Space Power Journal J1 - Air & Space Power Journal PY - 2004///Spring2004 Y1 - 2004///Spring2004 VL - 18 IS - 1 M3 - Article SP - 33 EP - 37 PB - Superintendent of Documents SN - 1555385X AB - For the past several years, the Air Force Research Laboratory in the U.S. has been developing sensors capable of detecting electromagnetic radiation across the spectrum from the infrared, through the visible, and into the ultraviolet regions. These sensors have become integral parts of military weapons systems as well as intelligence, surveillance, and reconnaissance systems and, undoubtedly, the capabilities are technologically sophisticated. However, many biological systems possess sensing capabilities unmatched by current technologies. KW - MILITARY supplies KW - DETECTORS KW - ELECTROMAGNETIC waves KW - AIR forces KW - BIOMIMETICS (Chemistry) KW - ELECTROMAGNETISM N1 - Accession Number: 12933974; Source Information: Spring2004, Vol. 18 Issue 1, p33; Subject Term: MILITARY supplies; Subject Term: DETECTORS; Subject Term: ELECTROMAGNETIC waves; Subject Term: AIR forces; Subject Term: BIOMIMETICS (Chemistry); Subject Term: ELECTROMAGNETISM; Subject Term: ; Number of Pages: 5p; ; Document Type: Article; ; Full Text Word Count: 2494; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12933974&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Tatiana V. Karpinets AU - Brent D. Foy AU - John M. Frazier T1 - Tailored gene array databases: applications in mechanistic toxicology. JO - Bioinformatics JF - Bioinformatics Y1 - 2004/03// VL - 20 IS - 4 M3 - Article SP - 507 EP - 517 SN - 13674803 AB - Motivation: The development of an annotated global database suitable for a wide range of investigations is a challenging and labor-intensive task. Thus, the development of databases tailored for specific applications remains necessary. For example, in the field of toxicology, no annotated gene array databases are now available that may assist in the correlation of changes in gene activity to cellular functions and processes associated with the toxic response.Results: As an example of a tailored annotated database, an attempt was made to systematize available biological information on genes present on the Affymetrix Rat Toxicology U34 GeneChip, with a focus on how the gene products relate to liver cells and their response to chemical toxins. The information collected was imbedded in a local relational database to analyze data obtained in toxicological gene array experiments with hydrazineexposed hepatocytes. The advantages and benefits of the tailored database in the biological interpretation of the results are demonstrated.Availability: The database and gene expression data set are available at http://www.wright.edu/~tatiana.karpinets/ [ABSTRACT FROM AUTHOR] AB - Copyright of Bioinformatics is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Relational databases KW - Information storage & retrieval systems KW - Databases KW - Gene expression KW - Pharmacology N1 - Accession Number: 18248128; Tatiana V. Karpinets 1; Brent D. Foy 1; John M. Frazier 2; Affiliations: 1 : Department of Physics, Wright State University, 3640 Colonel Glenn Hwy, Dayton, OH 45435, USA and; 2 : ment of Physics, Wright State University, 3640 Colonel Glenn Hwy, Dayton, OH 45435, USA and , 1, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7400, USA; Source Info: Mar2004, Vol. 20 Issue 4, p507; Thesaurus Term: Relational databases; Thesaurus Term: Information storage & retrieval systems; Thesaurus Term: Databases; Subject Term: Gene expression; Subject Term: Pharmacology; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lih&AN=18248128&site=ehost-live&scope=site DP - EBSCOhost DB - lih ER - TY - JOUR AU - Greer, James L. AU - Jensen, Daniel D. AU - Wood, Kristin L. T1 - Effort flow analysis: a methodology for directed product evolution JO - Design Studies JF - Design Studies Y1 - 2004/03// VL - 25 IS - 2 M3 - Article SP - 193 SN - 0142694X AB - Part count reduction through part combination is a recognized goal of design for assembly (DFA). Some of the many benefits of part count reduction are: a reduced number of assembly operations, reduced procurement costs, cycle time reduction, supply chain reduction, and higher potential profits. In previous work, force flow analysis, a new technique to map forces as they flow across interfaces in a product, was shown to be successful at systematically providing creative insights for part combination. These insights arise by highlighting components having no relative motion between them. This paper presents a novel concept that extends the theoretical basis of force flow analysis to a much broader scope, referred to as effort flow analysis, addressing component combinations having varying degrees of relative motion. A systematic method for classifying these sets of components is given, and compliant mechanisms are presented as an example of successful combinations across interfaces with relative motion. Examples are provided for the redesign of a ‘Quick Grip™ Clamp’ and a staple remover, both of which highlight a specific class of relative motion components. [Copyright &y& Elsevier] AB - Copyright of Design Studies is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Product design KW - Industrial design KW - Design KW - Customization KW - Product management KW - component combination KW - design methods KW - product design KW - product modelling N1 - Accession Number: 12040519; Greer, James L. 1; Jensen, Daniel D. 2; Wood, Kristin L. 1; Affiliations: 1 : Department of Mechanical Engineering, University of Texas, Austin, TX 78712-1063, USA; 2 : Department of Engineering Mechanics, US Air Force Academy, Colorado Springs, CO 80840-6240, USA; Source Info: Mar2004, Vol. 25 Issue 2, p193; Thesaurus Term: Product design; Thesaurus Term: Industrial design; Thesaurus Term: Design; Subject Term: Customization; Subject Term: Product management; Author-Supplied Keyword: component combination; Author-Supplied Keyword: design methods; Author-Supplied Keyword: product design; Author-Supplied Keyword: product modelling; Number of Pages: 22p; Document Type: Article L3 - 10.1016/j.destud.2003.09.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=vth&AN=12040519&site=ehost-live&scope=site DP - EBSCOhost DB - vth ER - TY - JOUR AU - Gute, Brian D. AU - Balasubramanian, K. AU - Geiss, K.T. AU - Basak, S.C. T1 - Prediction of halocarbon toxicity from structure: a hierarchical QSAR approach JO - Environmental Toxicology & Pharmacology JF - Environmental Toxicology & Pharmacology Y1 - 2004/03// VL - 16 IS - 1/2 M3 - Article SP - 121 SN - 13826689 AB - Mathematical structural invariants and quantum theoretical descriptors have been used extensively in quantitative structure–activity relationships (QSARs) for the estimation of pharmaceutical activities, biological properties, physicochemical properties, and the toxicities of chemicals. Recently our research team has explored the relative importance of various levels of chemodescriptors, i.e. topostructural (TS), topochemical (TC), geometrical (3D), and quantum theoretical descriptors, in property estimation. This study examines the contribution of chemodescriptors ranging from topostructural to quantum theoretic calculations, up to the Gaussian STO-3G level, in predicting the results of six indicators of oxidative stress for a set of 20 halocarbons. Using quantum theoretical calculations in this study is of particular interest as molecular energetics is related to the likelihood of electron attachment and free radical formation, the mechanism of toxicity for these chemicals and should aid in modeling their potential for oxidative stress. [Copyright &y& Elsevier] AB - Copyright of Environmental Toxicology & Pharmacology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Hydrocarbons KW - Toxicity testing KW - Chemicals KW - Electrons KW - Halogenated aliphatic hydrocarbons KW - Oxidative stress KW - QSAR N1 - Accession Number: 12381927; Gute, Brian D. 1; Balasubramanian, K. 2,3,4; Geiss, K.T. 5; Basak, S.C. 1; Email Address: sbasak@nrri.umn.edu; Affiliations: 1: Natural Resources Research Institute, University of Minnesota Duluth, 5013 Miller Trunk Hwy., Duluth, MN 55811, USA; 2: Department of Applied Science, University of California Davis, Livermore, CA 94550, USA; 3: Chemistry and Material Science Directorate, Lawrence Livermore National Laboratory, University of California, P.O. Box 808, L-268 Livermore, CA 94550, USA; 4: Glenn T. Seaborg Center, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; 5: Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Issue Info: Mar2004, Vol. 16 Issue 1/2, p121; Thesaurus Term: Hydrocarbons; Thesaurus Term: Toxicity testing; Subject Term: Chemicals; Subject Term: Electrons; Author-Supplied Keyword: Halogenated aliphatic hydrocarbons; Author-Supplied Keyword: Oxidative stress; Author-Supplied Keyword: QSAR; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.etap.2003.10.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12381927&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Matyjas, John D. AU - Psaromiligkos, Loannis N. AU - Batalama, Stella N. AU - Medley, Michael J. T1 - Fast Converging Minimum Probability of Error Neural Network Receivers for DS-CDMA Communications. JO - IEEE Transactions on Neural Networks JF - IEEE Transactions on Neural Networks J1 - IEEE Transactions on Neural Networks PY - 2004/03// Y1 - 2004/03// VL - 15 IS - 2 M3 - Article SP - 445 EP - 454 SN - 10459227 AB - We consider a multilayer perceptron neural network (NN) receiver architecture for the recovery of the information bits of a direct-sequence code-division-multiple-access (DS-CDMA) user. We develop a fast converging adaptive training algorithm that minimizes the bit-error rate (BER) at the output of the receiver. The adaptive algorithm has three key features: i) it incorporates the BER, i.e., the ultimate performance evaluation measure, directly into the learning process, ii) it utilizes constraints that are derived from the properties of the optimum single-user decision boundary for additive white Gaussian noise (AWGN) multiple-access channels, and iii) it embeds importance sampling (IS) principles directly into the receiver optimization process. Simulation studies illustrate the BER performance of the proposed scheme. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Neural Networks is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEURAL networks (Computer science) KW - MOBILE communication systems KW - ARTIFICIAL intelligence KW - STOCHASTIC processes KW - COMPUTER architecture KW - ALGORITHMS KW - LEARNING N1 - Accession Number: 12998418; Source Information: Mar2004, Vol. 15 Issue 2, p445; Subject Term: NEURAL networks (Computer science); Subject Term: MOBILE communication systems; Subject Term: ARTIFICIAL intelligence; Subject Term: STOCHASTIC processes; Subject Term: COMPUTER architecture; Subject Term: ALGORITHMS; Subject Term: LEARNING; Subject Term: ; Number of Pages: 10p; ; Document Type: Article; L3 - 10.1109/TNN.2004.824258 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12998418&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Blake, William B. AU - Gingras, David R. T1 - Comparison of Predicted and Measured Formation Flight Interference Effects. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2004/03//Mar/Apr2004 Y1 - 2004/03//Mar/Apr2004 VL - 41 IS - 2 M3 - Article SP - 201 EP - 207 SN - 00218669 AB - Results from a wind-tunnel test of two delta-wing aircraft in close proximity are presented and compared with predictions from a vortex lattice method. Large changes in lift, pitching moment, and rolling moment are found on the trail aircraft as it moves laterally relative to the lead aircraft. The magnitude of these changes is reduced as the trail aircraft moves vertically with respect to the lead aircraft. Lift-to-drag ratio of the trail aircraft is increased when the wing tips are slightly overlapped. Wake-induced lift is overpredicted slightly when the aircraft overlap in the spanwise direction. Wake-induced pitching and rolling moments are well predicted. A maximum induced drag reduction of 25% is measured on the trail aircraft, compared with a 40% predicted reduction. Three positional stability derivatives, change in lift and pitching moment with vertical position and change in rolling moment with lateral position, are studied. Predicted boundaries between stable and unstable regions were generally in good agreement with experimentally derived boundaries. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERFERENCE (Aerodynamics) KW - AERONAUTICS KW - FLIGHT KW - STABILITY of airplanes KW - AERODYNAMICS N1 - Accession Number: 13100633; Source Information: Mar/Apr2004, Vol. 41 Issue 2, p201; Subject Term: INTERFERENCE (Aerodynamics); Subject Term: AERONAUTICS; Subject Term: FLIGHT; Subject Term: STABILITY of airplanes; Subject Term: AERODYNAMICS; Subject Term: ; Number of Pages: 7p; ; Illustrations: 1 Black and White Photograph, 3 Diagrams, 16 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=13100633&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - NEWS AU - Wander, Joseph D. AU - Rood, Mark J. T1 - Capture and Recovery or Destruction of Trace Vapors from Gas Streams. JO - Journal of Environmental Engineering JF - Journal of Environmental Engineering Y1 - 2004/03// VL - 130 IS - 3 M3 - Editorial SP - 209 EP - 210 PB - American Society of Civil Engineers SN - 07339372 AB - Editorial. Introduces a series of articles concerning the development of technologies to capture and recover or destroy trace vapors from industrial gas streams, published in the March 2004 issue of the "Journal of Environmental Engineering". Equilibrium and dynamics when using activated carbon to remove the vapors from gas stream; Activated carbon monolith to capture toluene from gas; Biofiltration systems; Use of metal oxide catalysts to mineralize organic vapors. KW - Environmental engineering KW - Volatile organic compounds KW - Activated carbon KW - Toluene KW - Metallic oxides KW - Catalysts N1 - Accession Number: 12297932; Wander, Joseph D. 1; Email Address: Joe.Wander@tyndall.af.mil; Rood, Mark J. 2; Email Address: mrood@uiuc.edu; Affiliations: 1: United States Air Force Research Laboratory, FL; 2: Dept. of Civil and Environmental Engineering, Univ. of Illinois; Issue Info: Mar2004, Vol. 130 Issue 3, p209; Thesaurus Term: Environmental engineering; Thesaurus Term: Volatile organic compounds; Thesaurus Term: Activated carbon; Thesaurus Term: Toluene; Thesaurus Term: Metallic oxides; Subject Term: Catalysts; NAICS/Industry Codes: 325999 All other miscellaneous chemical product manufacturing; NAICS/Industry Codes: 325998 All Other Miscellaneous Chemical Product and Preparation Manufacturing; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 2p; Document Type: Editorial L3 - 10.1061/(ASCE)0733-9372(2004)130:3(209) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12297932&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Sullivan, Patrick D. AU - Rood, Mark J. AU - Dombrowski, Katherine D. AU - Hay, K. James T1 - Capture of Organic Vapors Using Adsorption and Electrothermal Regeneration. JO - Journal of Environmental Engineering JF - Journal of Environmental Engineering Y1 - 2004/03// VL - 130 IS - 3 M3 - Article SP - 258 EP - 267 PB - American Society of Civil Engineers SN - 07339372 AB - Activated-carbon-fiber cloth (ACFC) is an alternative adsorbent to granular activated carbon (GAC) for removing and recovering organic vapors from gas streams. Electrothermal desorption (ED) of ACFC provides rapid regeneration while requiring less energy compared to traditional regeneration techniques used with GAC. This paper provides proof-of-concept results from a bench-scale ACFC adsorption system. The automated system captured 1,000 ppmv of hazardous air pollutants/volatile organic compounds (HAPs/VOCs) from air streams and demonstrated the use of ED, using ac voltage, to recover the HAP/VOC as a pure liquid. The desorbed HAP/VOC condensed onto the inner walls of the adsorber and was collected at the bottom of the vessel, without the use of ancillary cooling. Seventy percent of the HAP/VOC was collected per cycle as condensate, with the balance being retained in the regenerated adsorber or recycled to the second adsorber. ED with in-vessel condensation results in minimal N[sub 2] consumption and short regeneration cycle times allowing the process to be cost competitive with conventional GAC-based adsorption processes. This technology extends the application of carbon adsorption systems to situations that were previously economically and physically impractical. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Environmental Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Volatile organic compounds KW - Activated carbon KW - Adsorption KW - Air pollution KW - Environmental engineering KW - Cooling KW - Activated carbon filters KW - Vapor N1 - Accession Number: 12297925; Sullivan, Patrick D. 1; Email Address: patrick.sullivan@tyndall.af.mil; Rood, Mark J. 2; Dombrowski, Katherine D. 3; Hay, K. James 4; Affiliations: 1: Air Force Research Laboratory, AFRL/MLFQ, FL; 2: Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign; 3: URS Corp., Austin, TX; 4: Construction Engineering Research Laboratory, U.S. Army Corps of Engineers, IL; Issue Info: Mar2004, Vol. 130 Issue 3, p258; Thesaurus Term: Volatile organic compounds; Thesaurus Term: Activated carbon; Thesaurus Term: Adsorption; Thesaurus Term: Air pollution; Thesaurus Term: Environmental engineering; Subject Term: Cooling; Author-Supplied Keyword: Activated carbon filters; Author-Supplied Keyword: Vapor; NAICS/Industry Codes: 325998 All Other Miscellaneous Chemical Product and Preparation Manufacturing; NAICS/Industry Codes: 325999 All other miscellaneous chemical product manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1061/(ASCE)0733-9372(2004)130:3(258) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12297925&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Dombrowski, Katherine D. AU - Lehmann, Christopher M.B. AU - Sullivan, Patrick D. AU - Ramirez, David AU - Rood, Mark J. AU - Hay, K. James T1 - Organic Vapor Recovery and Energy Efficiency during Electric Regeneration of an Activated Carbon Fiber Cloth Adsorber. JO - Journal of Environmental Engineering JF - Journal of Environmental Engineering Y1 - 2004/03// VL - 130 IS - 3 M3 - Article SP - 268 EP - 275 PB - American Society of Civil Engineers SN - 07339372 AB - An electrothermal-swing adsorption system was demonstrated on the bench scale for capture and recovery of organic vapors from air streams. Methyl propyl ketone (MPK), methyl ethyl ketone, n-hexane, acetone, and methylene chloride were removed and recovered at 200–1,020 ppm[sub v] in a 40.0 slpm air stream while using activated carbon fiber cloth (ACFC) adsorbent. Removal efficiencies were greater than 99.9%. Liquid recovery fractions increased with increasing relative pressure, ranging from 0.11 for methylene chloride (P/P[sub sat]=2.1×10[sup -3]) to greater than 0.80 for MPK (P/P[sub sat]=2.2×10[sup -2]). The electrical energy consumed during regeneration per mol of liquid organic compound recovered decreased with increasing relative pressure of the inlet gas stream, ranging from 4,698 kJ/mol for methylene chloride to 327 kJ/mol for MPK. Equilibrium ACFC adsorption capacity, throughput ratio, and length of unused bed were also evaluated. These results are encouraging for the development of a new technology to capture and readily recover a wide range of organic vapors from air streams. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Environmental Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Volatile organic compounds KW - Activated carbon KW - Methyl ethyl ketone KW - Absorption KW - Air pollution KW - Environmental engineering KW - Activated carbon filters KW - Adsorption KW - Regneration N1 - Accession Number: 12297924; Dombrowski, Katherine D. 1; Lehmann, Christopher M.B. 2; Sullivan, Patrick D. 3; Ramirez, David 2; Rood, Mark J. 2; Hay, K. James 4; Affiliations: 1: URS Corporation, Austin, TX; 2: Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign; 3: Air Force Research Laboratory, AFRL/MLQF, FL; 4: Construction Engineering Research Lab, U.S. Army Corps of Engineers, IL; Issue Info: Mar2004, Vol. 130 Issue 3, p268; Thesaurus Term: Volatile organic compounds; Thesaurus Term: Activated carbon; Thesaurus Term: Methyl ethyl ketone; Thesaurus Term: Absorption; Thesaurus Term: Air pollution; Thesaurus Term: Environmental engineering; Author-Supplied Keyword: Activated carbon filters; Author-Supplied Keyword: Adsorption; Author-Supplied Keyword: Regneration; NAICS/Industry Codes: 325998 All Other Miscellaneous Chemical Product and Preparation Manufacturing; NAICS/Industry Codes: 325999 All other miscellaneous chemical product manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1061/(ASCE)0733-9372(2004)130:3(268) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12297924&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Roark, Shane E. AU - Cabrera-Fonseca, Jimena AU - Milazzo, Michael C. AU - White, James H. AU - Wander, Joseph D. T1 - Catalytic Oxidation of Volatile Organic Liquids. JO - Journal of Environmental Engineering JF - Journal of Environmental Engineering Y1 - 2004/03// VL - 130 IS - 3 M3 - Article SP - 329 EP - 337 PB - American Society of Civil Engineers SN - 07339372 AB - Metal oxide and supported-Pt catalysts were developed for complete oxidation of volatile organic compounds (VOCs) and other solvent-derived organic vapors (OVs) in air at relatively low temperatures. The goal for this work is to produce a simple, cost-effective technology for reducing the concentration of organic contaminants in air to acceptable levels before the air is released into the atmosphere or recirculated. Specific applications include ventilated work spaces for spray painting and engine maintenance, indoor air decontamination, dry cleaning, food processing, fume hoods, residential use, and solvent-intensive industrial processes. Catalyst powders and monolith-supported catalysts were screened for conversion of 1-butanol, toluene, and methyl ethyl ketone to carbon dioxide and water. The concentration of OVs in the feedstream was maintained at approximately 100 ppmv, and the space velocity was between 6,000 and 18,000 h-1. Metal oxide catalysts without Pt generated complete conversion of 1-butanol to CO[sub 2] at 150°C, 69% conversion at 100°C, and 15% conversion at 80°C. For toluene, complete conversion was achieved at 200°C, and greater than 75% conversion at 150°C. Addition of Pt to the metal oxide compositions typically lowered the temperature for a given OV oxidation rate by at least 20–50°C. Catalysts deposited onto standard commercial cordierite monoliths retained their composition and activity, and were stable in humid air, as well as nitrogen- and chlorine-containing OVs. However, the catalysts quickly deactivated in the presence of sulfur and phosphorus. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Environmental Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Volatile organic compounds KW - Metallic oxides KW - Oxidation KW - Environmental engineering KW - Catalysts KW - Low temperatures KW - Abatement and removal KW - Volatile organic chemicals N1 - Accession Number: 12297917; Roark, Shane E. 1; Cabrera-Fonseca, Jimena 2; Milazzo, Michael C. 2; White, James H. 2; Wander, Joseph D. 3; Affiliations: 1: Advanced Chemical Processing, Eltron Research, Inc., Boulder, CO; 2: Eltron Research, Inc., Boulder, CO; 3: Air Force Research Laboratory, AFRL/MLQF, FL; Issue Info: Mar2004, Vol. 130 Issue 3, p329; Thesaurus Term: Volatile organic compounds; Thesaurus Term: Metallic oxides; Thesaurus Term: Oxidation; Thesaurus Term: Environmental engineering; Subject Term: Catalysts; Subject Term: Low temperatures; Author-Supplied Keyword: Abatement and removal; Author-Supplied Keyword: Volatile organic chemicals; Number of Pages: 9p; Document Type: Article L3 - 10.1061/(ASCE)0733-9372(2004)130:3(329) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12297917&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Mullis, Tony R. T1 - The Dispersal of the Topeka Legislature. JO - Kansas History JF - Kansas History Y1 - 2004///Spring/Summer2004 VL - 27 IS - 1/2 M3 - Article SP - 62 EP - 75 SN - 01499114 AB - As part of a special issue on territorial Kansas, analyzes the US Army's 1856 dispersal of what was deemed an illegal free-state legislature in Topeka, Kansas, as an example of the problems involved in using federal troops to resolve domestic disputes. This article discusses command and control of the military in Kansas Territory, various communication modes between Washington, D.C., and Kansas, including regular mail, telegrams, and special messengers, the impact different communications had on territorial matters, and the significant role of Colonel Edwin V. Sumner in preserving order. KW - KANSAS -- History -- 1854-1861 KW - LEGISLATIVE bodies KW - KANSAS -- Politics & government KW - REPRESENTATIVE government KW - SUBNATIONAL governments KW - MILITARY communications KW - ARMIES KW - TOPEKA (Kan.) KW - KANSAS KW - UNITED States KW - UNITED States. Army -- Commando troops KW - SUMNER, Edwin V. N1 - Accession Number: 13095316; Mullis, Tony R. 1; Affiliations: 1 : Member, International Security and Military Studies Department, United States Air Force, Air University, Air Command and Staff College, Montgomery, Alamaba; Source Info: Spring/Summer2004, Vol. 27 Issue 1/2, p62; Note: 7 illus., 2 photos, 37 notes.; Historical Period: 1850 to 1859; Subject Term: KANSAS -- History -- 1854-1861; Subject Term: LEGISLATIVE bodies; Subject Term: KANSAS -- Politics & government; Subject Term: REPRESENTATIVE government; Subject Term: SUBNATIONAL governments; Subject Term: MILITARY communications; Subject Term: ARMIES; Subject: TOPEKA (Kan.); Subject: KANSAS; Subject: UNITED States; Number of Pages: 14p; Illustrations: 7 Black and White Photographs, 1 Diagram; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ahl&AN=13095316&site=ehost-live&scope=site DP - EBSCOhost DB - ahl ER - TY - JOUR AU - Cook, Martin L. T1 - The Peloponnesian War (Book). JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College J1 - Parameters: U.S. Army War College PY - 2004///Spring2004 Y1 - 2004///Spring2004 VL - 34 IS - 1 M3 - Book Review SP - 127 EP - 128 SN - 00311723 AB - Reviews the book "The Peloponnesian War," by Donald D. Kagan. KW - PELOPONNESIAN War, The (Book) KW - KAGAN, Donald D. KW - WAR KW - NONFICTION N1 - Accession Number: 12677076; Source Information: Spring2004, Vol. 34 Issue 1, p127; Subject Term: PELOPONNESIAN War, The (Book); Subject Term: KAGAN, Donald D.; Subject Term: WAR; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12677076&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Ensley, Eric T1 - Honoring Sergeant Carter: Redeeming a Black World War II Hero's Legacy. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2004/03// Y1 - 2004/03// VL - 16 IS - 1/2 M3 - Book Review SP - 286 EP - 288 PB - US Air Force Academy English Department SN - 10466967 AB - Reviews the book "Honoring Sergeant Carter: Redeeming a Black World War II Hero's Legacy," by Allene G. Carter and Robert L. Allen. KW - HONORING Sergeant Carter: Redeeming a Black World War II Hero's Legacy (Book) KW - CARTER, Allene G. KW - ALLEN, Robert L. KW - NONFICTION N1 - Accession Number: 16360292; Source Information: 2004, Vol. 16 Issue 1/2, p286; Subject Term: HONORING Sergeant Carter: Redeeming a Black World War II Hero's Legacy (Book); Subject Term: CARTER, Allene G.; Subject Term: ALLEN, Robert L.; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=16360292&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Sinha, Amanda E. AU - Fraga, Carlos G. AU - Prazen, Bryan J. AU - Synovec, Robert E. T1 - Trilinear chemometric analysis of two-dimensional comprehensive gas chromatography–time-of-flight mass spectrometry data JO - Journal of Chromatography A JF - Journal of Chromatography A Y1 - 2004/02/20/ VL - 1027 IS - 1/2 M3 - Article SP - 269 SN - 00219673 AB - Two-dimensional comprehensive gas chromatography (GC×GC) is a powerful instrumental tool in its own right that can be used to analyze complex mixtures, generating selective data that is applicable to multivariate quantitative analysis and pattern recognition. It has been recently demonstrated that by coupling GC×GC to time-of-flight mass spectrometry (TOFMS), a highly selective technique is produced. One separation on a GC×GC/TOFMS provides retention times on two chromatographic columns and a complete mass spectrum for each component within the mixture. In this manuscript, we demonstrate how the selectivity of GC×GC/TOFMS combined with trilinear chemometric techniques such as trilinear decomposition (TLD) and parallel factor analysis (PARAFAC) results in a powerful analytical methodology. Using TLD and PARAFAC, partially resolved components in complex mixtures can be deconvoluted and identified using only one data set without requiring either signal shape assumptions or fully selective mass signals. Specifically, a region of overlapped peaks in a complex environmental sample was mathematically resolved with TLD and PARAFAC to demonstrate the utility of these techniques as applied to GC×GC/TOFMS data of a complex mixture. For this data, it was determined that PARAFAC initiated by TLD performed a better deconvolution than TLD alone. After deconvolution, mass spectral profiles were then matched to library spectra for identification. A standard addition analysis was performed on one of the deconvoluted analytes to demonstrate the utility of TLD-initiated PARAFAC for quantification without the need for accurate retention time alignment between sample and standard data sets. [Copyright &y& Elsevier] AB - Copyright of Journal of Chromatography A is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Gas chromatography KW - Analytical chemistry KW - Trilinear forms KW - Complex compounds KW - Pattern perception KW - Chemometrics KW - comprehensive two-dimensional (Gas chromatography) KW - Deconvolution KW - Parallel factor analysis N1 - Accession Number: 11883449; Sinha, Amanda E. 1; Fraga, Carlos G. 2; Prazen, Bryan J. 1; Synovec, Robert E. 1; Email Address: synovec@chem.washington.edu; Affiliations: 1: Department of Chemistry, Center for Process Analytical Chemistry, Box 351700, University of Washington, Seattle, WA 98195-1700, USA; 2: Department of Chemistry, 2355 Fairchild Dr. Suite 2N225, United States Air Force Academy, Colorado Springs, CO 80840-6230, USA; Issue Info: Feb2004, Vol. 1027 Issue 1/2, p269; Thesaurus Term: Gas chromatography; Thesaurus Term: Analytical chemistry; Subject Term: Trilinear forms; Subject Term: Complex compounds; Subject Term: Pattern perception; Author-Supplied Keyword: Chemometrics; Author-Supplied Keyword: comprehensive two-dimensional (Gas chromatography); Author-Supplied Keyword: Deconvolution; Author-Supplied Keyword: Parallel factor analysis; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.chroma.2003.08.081 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=11883449&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Neiberg, Michael T1 - Military Education: Past, Present, and Future (Book). JO - American Historical Review JF - American Historical Review J1 - American Historical Review PY - 2004/02// Y1 - 2004/02// VL - 109 IS - 1 M3 - Book Review SP - 150 EP - 151 PB - Oxford University Press / USA SN - 00028762 AB - Reviews the book "Military Education: Past, Present, and Future," edited by Gregory C. Kennedy and Keith Neilson. KW - MILITARY Education: Past, Present & Future (Book) KW - KENNEDY, Gregory C. KW - NEILSON, Keith KW - MILITARY education KW - NONFICTION N1 - Accession Number: 12391446; Source Information: Feb2004, Vol. 109 Issue 1, p150; Subject Term: MILITARY Education: Past, Present & Future (Book); Subject Term: KENNEDY, Gregory C.; Subject Term: NEILSON, Keith; Subject Term: MILITARY education; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12391446&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Fournier, Diane AU - Halasz, Annamaria AU - Spain, Jim AU - Spanggord, Ronald J. AU - Bottaro, Jeffrey C. AU - Hawari, Jalal T1 - Biodegradation of the Hexahydro-1,3,5-Trinitro-1,3,5-Triazine Ring Cleavage Product 4-Nitro-2,4-Diazabutanal by Phanerochaete chrysosporium. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2004/02// VL - 70 IS - 2 M3 - Article SP - 1123 EP - 1128 SN - 00992240 AB - Initial denitration of hexahydro-l,3,5-trinitro-1,3,5-triazine (RDX) by Rhodococcus sp. strain DN22 produces CO2 and the dead-end product 4-nitro-2,4-diazabutanal (NDAB), OHCNHCH2NHNO2, in high yield. Here we describe experiments to determine the biodegradability of NDAB in liquid culture and soils containing Phanerochaete chrysosporium. A soil sample taken from an ammunition plant contained RDX (342 μmol kg−¹), HMX (octahydro-l,3,5,7-tetranitro-l,3,5,7-tetrazocine; 3,057 μmol kg−¹), MNX (hexahydro-l-nitroso-3,5dinitro-l,3,5-triazine; 155 μmol kg−¹), and traces of NDAB (3.8 μmol kg−¹). The detection of the last in real soil provided the first experimental evidence for the occurrence of natural attenuation that involved ring cleavage of RDX. When we incubated the soil with strain DN22, both RDX and MNX (but not HMX) degraded and produced NDAB (388 ± 22 μmol kg−¹) in 5 days. Subsequent incubation of the soil with the fungus led to the removal of NDAB, with the liberation of nitrous oxide (N2O). In cultures with the fungus alone NDAB degraded to give a stoichiometric amount of N2O. To determine C stoichiometry, we first generated [14C]NDAB in situ by incubating [14C]RDX with strain DN22, followed by incubation with the fungus. The production of 14CO2 increased from 30 (DN22 only) to 76% (fungus). Experiments with pure enzymes revealed that manganese-dependent peroxidase rather than lignin peroxidase was responsible for NDAB degradation. The detection of NDAB in contaminated soil and its effective mineralization by the fungus P. chrysosporium may constitute the basis for the development of bioremediation technologies. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Corticiaceae KW - Fungi KW - Fungal remediation KW - Bioremediation KW - Soil microbiology KW - Phanerochaete KW - Stoichiometry N1 - Accession Number: 12591386; Fournier, Diane 1; Halasz, Annamaria 1; Spain, Jim 2; Spanggord, Ronald J. 3; Bottaro, Jeffrey C. 3; Hawari, Jalal 1; Email Address: jalal.hawari@cnrc-nrc.gc.ca; Affiliations: 1: Biotechnology Research Institute, National Research Council of Canada, Montreal, Quebec H4P 2R2, Canada; 2: U.S. Air Force Research Laboratory, Tyndall Air Force Base, Florida 32403; 3: SRI International, Menlo Park, California 94025; Issue Info: Feb2004, Vol. 70 Issue 2, p1123; Thesaurus Term: Corticiaceae; Thesaurus Term: Fungi; Thesaurus Term: Fungal remediation; Thesaurus Term: Bioremediation; Thesaurus Term: Soil microbiology; Subject Term: Phanerochaete; Subject Term: Stoichiometry; NAICS/Industry Codes: 562910 Remediation Services; Number of Pages: 6p; Illustrations: 1 Diagram, 1 Chart, 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12591386&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Sanchez, Ernest T1 - Performance-Based Service Contracting: A Challenge. JO - Contract Management JF - Contract Management Y1 - 2004/02// VL - 44 IS - 2 M3 - Article SP - 56 EP - 57 SN - 01903063 AB - Examines key considerations for performance-based service contracting in the U.S. Role and functions of the contractor; Emphasis on government contracting; Formation of the contract team; Contract requirements; Contracting agencies. KW - CONTRACTING out KW - PUBLIC contracts KW - CONTRACTORS KW - SERVICE industries KW - CONTRACTS KW - UNITED States N1 - Accession Number: 12585018; Sanchez, Ernest 1; Affiliations: 1: Air Combat Command Program Management Squadron at Langley Air Force Base in Virginia; Issue Info: Feb2004, Vol. 44 Issue 2, p56; Thesaurus Term: CONTRACTING out; Thesaurus Term: PUBLIC contracts; Thesaurus Term: CONTRACTORS; Thesaurus Term: SERVICE industries; Thesaurus Term: CONTRACTS; Subject: UNITED States; NAICS/Industry Codes: 423850 Service Establishment Equipment and Supplies Merchant Wholesalers; Number of Pages: 2p; Illustrations: 1 Color Photograph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12585018&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Barnum, B.H. AU - Winstead, N.S. AU - Wesely, J. AU - Hakola, A. AU - Colarco, P.R. AU - Toon, O.B. AU - Ginoux, P. AU - Brooks, G. AU - Hasselbarth, L. AU - Toth, B. T1 - Forecasting dust storms using the CARMA-dust model and MM5 weather data JO - Environmental Modelling & Software JF - Environmental Modelling & Software Y1 - 2004/02// VL - 19 IS - 2 M3 - Article SP - 129 EP - 140 SN - 13648152 AB - An operational model for the forecast of dust storms in Northern Africa, the Middle East and Southwest Asia has been developed for the United States Air Force Weather Agency (AFWA). The dust forecast model uses the 5th generation Penn State Mesoscale Meteorology Model (MM5) as input to the University of Colorado CARMA dust transport model. AFWA undertook a 60 day evaluation of the effectiveness of the dust model to make short, medium and long- range (72 h) forecasts of dust storms. The study is unique in using satellite and ground observations of dust storms to score the model’s effectiveness using standard meteorological statistics. Each of the main forecast regions was broken down into smaller areas for more detailed analysis. The study found the forecast model is an effective forecast tool with Probability of Detection of dust storm occurrence exceeding 68 percent over Northern Africa, with a 16 percent False Alarm Rate. Southwest Asia forecasts had average Probability of Detection values of 61 percent with False Alarm Rates averaging 10 percent. [Copyright &y& Elsevier] AB - Copyright of Environmental Modelling & Software is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Dust storms KW - Weather KW - Natural disasters KW - Artificial satellites in telecommunication KW - CARMA model KW - Dust storm forecasting KW - Mineral dust KW - MM5 weather model KW - Skill scores N1 - Accession Number: 22239144; Barnum, B.H. 1; Email Address: ben.barnum@jhuapl.edu; Winstead, N.S. 1; Wesely, J. 2; Hakola, A. 2; Colarco, P.R. 3; Toon, O.B. 4; Ginoux, P. 3; Brooks, G. 2; Hasselbarth, L. 1; Toth, B. 1; Affiliations: 1: Johns Hopkins University, Applied Physics Laboratory, Laurel, MD 20723, USA; 2: United States Air Force Weather Agency, Offut AFB, NE, USA; 3: NASA Goddard Space Flight Center, Greenbelt, MD, USA; 4: University of Colorado, PAOS Group, Boulder, CO, USA; Issue Info: Feb2004, Vol. 19 Issue 2, p129; Thesaurus Term: Dust storms; Thesaurus Term: Weather; Thesaurus Term: Natural disasters; Subject Term: Artificial satellites in telecommunication; Author-Supplied Keyword: CARMA model; Author-Supplied Keyword: Dust storm forecasting; Author-Supplied Keyword: Mineral dust; Author-Supplied Keyword: MM5 weather model; Author-Supplied Keyword: Skill scores; NAICS/Industry Codes: 517410 Satellite Telecommunications; Number of Pages: 12p; Document Type: Article L3 - 10.1016/S1364-8152(03)00115-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=22239144&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Walters, Thomas J. AU - Ryan, Kathy L. AU - Nelson, David A. AU - Blick, Dennis W. AU - Mason, Patrick A. T1 - EFFECTS OF BLOOD FLOW ON SKIN HEATING INDUCED BY MILLIMETER WAVE IRRADIATION IN HUMANS. JO - Health Physics JF - Health Physics Y1 - 2004/02// VL - 86 IS - 2 M3 - Article SP - 115 EP - 120 SN - 00179078 AB - We have previously reported species differences in the rate of skin heating in response to millimeter wavelength microwave exposure. We hypothesized that these differences were predominantly a function of species differences in the ability to increase skin blood flow during local heating. Mathematical modeling also suggested that, in humans, the rate of skin heating during prolonged millimeter wavelength exposure would be dependent on skin blood flow. In order to empirically test this hypothesis, we determined the role of baseline skin blood flow on the rate of cutaneous heating induced by 94-GHz microwave energy in humans (3 female, 3 male) using infrared thermography and laser Doppler imaging to measure skin temperature and relative skin blood flow, respectively. Millimeter wavelength exposure intensities used were high power (HP), 1 W·cm[sup -2] for 4 s and low power, 175 mW cm[sup -2] for 180 s. Skin blood flow was (a) normal, (b) eliminated using a blood pressure cuff to occlude forearm blood flow, or (c) elevated by heating the skin prior to irradiation. Results showed that for the HP exposures, these manipulations did not influence the rate of skin heating. For the low power exposures, occlusion of baseline skin blood flow had a small impact on the subsequent rate of heating. In contrast, a two-fold elevation in baseline skin blood flow had a profound impact on the subsequent rate of heating, resulting in a substantially lower rate of heating. Occlusion of an elevated skin blood flow reversed this lower rate of heating. The results of these studies demonstrate that relatively small changes in skin blood flow may produce substantial alterations in the rate of skin heating during prolonged 94-GHz exposure. Key words: electromagnetic fields; radiation; nonionizing; radiofrequency; blood. [ABSTRACT FROM AUTHOR] AB - Copyright of Health Physics is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Effect of radiation on skin KW - Heating KW - Blood flow KW - Microwaves KW - Millimeter waves KW - Electromagnetic fields N1 - Accession Number: 12385391; Walters, Thomas J. 1,2,3; Ryan, Kathy L. 3; Nelson, David A. 4; Blick, Dennis W. 1,2; Mason, Patrick A. 2; Email Address: patrick.mason@brooks.af.mil; Affiliations: 1: Veridian Engineering, Brooks City-Base, TX; 2: U.S. Air Force Research Laboratory, Directed Energy Bioeffects Division, Brooks City-Base, TX; 3: U.S. Army Institute of Surgical Research, Fort Sam Houston, TX; 4: Department of Biomedical Engineering, Michigan Technological University; Issue Info: Feb2004, Vol. 86 Issue 2, p115; Thesaurus Term: Effect of radiation on skin; Thesaurus Term: Heating; Subject Term: Blood flow; Subject Term: Microwaves; Subject Term: Millimeter waves; Subject Term: Electromagnetic fields; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; Number of Pages: 6p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12385391&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Intrator, T. P. AU - Park, Jaeyoung Y. AU - Degnan, James H. AU - Furno, I. AU - Grabowski, Chris AU - Hsu, S. C. AU - Ruden, Edward L. AU - Sanchez, P. G. AU - Taccetti, J. Martin AU - Tuszewski, M. AU - Waganaar, W. J. AU - Wurden, Glen A. AU - Zhang, Shouyin Y. AU - Zhehui Wang T1 - A High-Density Field Reversed Configuration Plasma for Magnetized Target Fusion. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/02//Feb2004 Part 1 of 3 VL - 32 IS - 1 M3 - Article SP - 152 EP - 160 SN - 00933813 AB - We describe a program to demonstrate the scientific basis of magnetized target fusion (MTF). MTF is a "potentially low-cost path to fusion which is intermediate in plasma regime between magnetic (MFE) and inertial fusion energy (IFE). MTF involves the Compression of a magnetized target plasma and pressure times volume (PdV) heating to fusion relevant conditions inside a converging flux conserving boundary. We have chosen to demonstrate MTF by using a field-reversed configuration (FRC) as our magnetized target plasma and an imploding metal liner for compression. These choices take advantage of significant past scientific and technical accomplishments in MFE and defense programs research and should yield substantial plasma performance (nr > 1013 s-cm³ T > 5 key) using an available pulsed-power implosion facility at modest cost. We have recently shown the density, temperature, and lifetime of this FRC to be within a factor of 2-3 of that required for use as a suitable target plasma for MIT compression for a fusion demonstration. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA (Ionized gases) KW - FUSION (Phase transformation) KW - IONIZED gases KW - PHYSICAL & theoretical chemistry KW - TEMPERATURE KW - PHYSICS KW - Field-reversed configuration KW - fusion energy KW - magnetized target fusion (MTF). N1 - Accession Number: 13120671; Intrator, T. P. 1; Email Address: intrator@lanl.gov; Park, Jaeyoung Y. 1; Degnan, James H. 2; Furno, I. 1; Grabowski, Chris 2; Hsu, S. C. 1; Ruden, Edward L. 2; Sanchez, P. G. 1; Taccetti, J. Martin 1; Tuszewski, M. 1; Waganaar, W. J. 1; Wurden, Glen A. 1; Zhang, Shouyin Y. 1; Zhehui Wang 1; Affiliations: 1: P-24 Plasma Physics Group, Los Alamos National Laboratory, Los Alamos, NM 87545 USA.; 2: Air Force Research Laboratory, Kirtland, NM 87117 USA.; Issue Info: Feb2004 Part 1 of 3, Vol. 32 Issue 1, p152; Subject Term: PLASMA (Ionized gases); Subject Term: FUSION (Phase transformation); Subject Term: IONIZED gases; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: TEMPERATURE; Subject Term: PHYSICS; Author-Supplied Keyword: Field-reversed configuration; Author-Supplied Keyword: fusion energy; Author-Supplied Keyword: magnetized target fusion (MTF).; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TPS.2004.823974 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=13120671&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Pekarek, Steven D. AU - Wasynczuk, Oleg AU - Walters, Eric A. AU - Jatskevich, Juri V. AU - Lucas, Chalres E. AU - Ning Wu AU - Lamm, Peter T. T1 - An Efficient Multirate Simulation Technique for Power-Electronic-Based Systems. JO - IEEE Transactions on Power Systems JF - IEEE Transactions on Power Systems J1 - IEEE Transactions on Power Systems PY - 2004/02// Y1 - 2004/02// VL - 19 IS - 1 M3 - Article SP - 399 EP - 409 SN - 08858950 AB - A novel multirate method of simulating power-electronic-based systems containing a wide range of time scales is presented. In this method, any suitable integration algorithm, with fixed or variable time-step, can be applied to the fast and/or slow subsystems. The subsystems exchange coupling variables at a communication interval that can be fixed or varied dynamically depending upon the state of the system variables. The proposed multirate method is applied to two example power systems that include power-electronic subsystems. Increases in simulation speed of 183-281% over established single-rate integration algorithms are demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Power Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER simulation KW - ELECTROMECHANICAL analogies KW - NUMERICAL integration KW - NUMERICAL analysis KW - ALGORITHMS KW - ELECTRIC power KW - POWER resources N1 - Accession Number: 12470873; Source Information: Feb2004, Vol. 19 Issue 1, p399; Subject Term: COMPUTER simulation; Subject Term: ELECTROMECHANICAL analogies; Subject Term: NUMERICAL integration; Subject Term: NUMERICAL analysis; Subject Term: ALGORITHMS; Subject Term: ELECTRIC power; Subject Term: POWER resources; Subject Term: ; Number of Pages: 11p; ; Document Type: Article; L3 - 10.1109/TPWRS.2003.821452 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12470873&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Orozco, Ana Lilia AU - Maji, Arup K. T1 - Energy Release in Fiber-Reinforced Plastic Reinforced Concrete Beams. JO - Journal of Composites for Construction JF - Journal of Composites for Construction Y1 - 2004/02// VL - 8 IS - 1 M3 - Article SP - 52 EP - 58 PB - American Society of Civil Engineers SN - 10900268 AB - A set of 30 concrete beams reinforced with carbon/epoxy FRP (fiber-reinforced plastic) and four reinforced with comparable size steel rebars were subjected to static bending tests. Adequate bond between the FRP and the concrete was obtained, due to the use of carbon fiber overwrap on the smooth pultruded FRP rods. With adequate bond, the large strain to failure (>2%) of the FRP determines the ductility and failure mode of the FRP reinforced beams. An analytical evaluation of the fracture energy in these experiments shows that there is ductility due to the large fraction of the total strain energy that is absorbed in the concrete, because of the formation of distributed cracking. Variations in overwrap configuration, addition of steel stirrups, addition of polypropylene fibers, and comparison with four beams reinforced with equivalent steel reinforcement were also analyzed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composites for Construction is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENERGY dissipation KW - FORCE & energy KW - GIRDERS KW - PLASTICS KW - POLYMERS KW - Beams KW - Ductility KW - Energy dissipation KW - Fiber-reinforced plastics KW - reinforced KW - Structural reinforcement N1 - Accession Number: 11978846; Orozco, Ana Lilia 1; Email Address: aorozco85@hotmail.com; Maji, Arup K. 2,3; Email Address: amaji@unm.edu; Affiliations: 1: Professor of Civil Engineering, Facultad de Ingenieria, Universidad Autonoma de Chihuahua, Apartado Postal 1528 Suc. C. Chihuahua, Chihuahua 31160, Mexico; 2: Professor, Dept. of Civil Engineering, Univ. of New Mexico, Albuquerque, NM 87131-1351; 3: Senior Research Scientist, Air Force Research Laboratory, AFRL/VSSV, Albuquerque, NM 87117-5776; Issue Info: Feb2004, Vol. 8 Issue 1, p52; Subject Term: ENERGY dissipation; Subject Term: FORCE & energy; Subject Term: GIRDERS; Subject Term: PLASTICS; Subject Term: POLYMERS; Author-Supplied Keyword: Beams; Author-Supplied Keyword: Ductility; Author-Supplied Keyword: Energy dissipation; Author-Supplied Keyword: Fiber-reinforced plastics; Author-Supplied Keyword: reinforced; Author-Supplied Keyword: Structural reinforcement; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 326199 All Other Plastics Product Manufacturing; NAICS/Industry Codes: 326198 All other plastic product manufacturing; NAICS/Industry Codes: 326121 Unlaminated Plastics Profile Shape Manufacturing; NAICS/Industry Codes: 424610 Plastics Materials and Basic Forms and Shapes Merchant Wholesalers; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; Number of Pages: 7p; Illustrations: 1 Black and White Photograph, 6 Diagrams, 3 Charts, 7 Graphs; Document Type: Article L3 - 10.1061/(ASCE)1090-0268(2004)8:1(52) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=11978846&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Ihle, Roger T1 - First Person Singular. JO - Journal of Electronic Defense JF - Journal of Electronic Defense J1 - Journal of Electronic Defense PY - 2004/02// Y1 - 2004/02// VL - 27 IS - 2 M3 - Article SP - 74 EP - 74 PB - Association of Old Crows SN - 0192429X AB - Part I. Reports on aerial reconnaissance in World War II. Author's training in military communications and selection for a radar school run by the U.S. Air Force and Navy; Training in electronic warfare; Exhibition and demonstration of electronic equipment. KW - AERIAL reconnaissance (Military) KW - WORLD War, 1939-1945 KW - MILITARY communications KW - RADAR KW - MILITARY electronics KW - MILITARY education N1 - Accession Number: 12256280; Source Information: Feb2004, Vol. 27 Issue 2, p74; Subject Term: AERIAL reconnaissance (Military); Subject Term: WORLD War, 1939-1945; Subject Term: MILITARY communications; Subject Term: RADAR; Subject Term: MILITARY electronics; Subject Term: MILITARY education; Subject Term: ; Number of Pages: 1p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12256280&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR T1 - EFFECT OF HYDRATION STATE ON HEART RATE-BASED ESTIMATES OF VO2MAX. AU - Southard, Teresa L. AU - Pugh, Joseph W. JO - Journal of Exercise Physiology Online JF - Journal of Exercise Physiology Online Y1 - 2004/02// VL - 7 IS - 1 SP - 19 EP - 25 SN - 10979751 N1 - Accession Number: 16062274; Author: Southard, Teresa L.: 1 Author: Pugh, Joseph W.: 1 email: teresa.southard@usafa.af.mil. ; Author Affiliation: 1 United States Air Force Academy, Colorado; No. of Pages: 7; Language: English; Publication Type: Article; Update Code: 20050516 N2 - Submaximal tests of aerobic fitness typically extrapolate oxygen consumption from heart rate. Because heart rate is influenced by hydration level, this study was conducted to investigate the effects of hydration status on the VO2max scores predicted by a submaximal cycle ergometry assessment. Fifteen male cadets at the U.S. Air Force Academy took the heart rate-based USAF submaximal cycle ergometry fitness test twice over a 3-day period, once following a 12-hour fluid-restriction period (the dehydrated trial) and once following a hydration protocol in which the subjects drank a volume of water equivalent to 2% body weight 10 hours before the test and an additional volume equivalent to 1% body weight at least 30 minutes before the test (the hydrated trial). Prior to testing, subjects were weighed and a urine sample was collected. The urine specific gravity (USG) was measured using a refractometer. Our results indicated that, during the dehydrated trial, subjects' USG was significantly higher and their weight and VO2max scores were significantly lower than during the hydrated trial. The change in the VO2max score was significantly correlated to the change in percent body weight between the two trials. These data suggest that hydration status affects heart rate-based, submaximal estimates of VO2max. ABSTRACT FROM AUTHOR KW - *AEROBIC exercises KW - *HEART beat KW - OXYGEN KW - HYDRATION KW - MILITARY cadets KW - UNITED States KW - Dehydration KW - Submaximal Cycle Ergometry KW - USAF Fitness Test UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=16062274&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Sherer, Scott E. T1 - Scattering of sound from axisymetric sources by multiple circular cylinders. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2004/02// VL - 115 IS - 2 M3 - Article SP - 488 EP - 496 SN - 00014966 AB - A general analytic method for calculating the scattering of sound by multiple rigid circular cylinders arranged in an arbitrary parallel configuration is presented. The sound scattered by this collection of cylinders is generated by a time-periodic, spatially distributed, axisymmetric source located within the domain of interest. A Hankel transform method is used to calculate the incident field, while separation of variables is used to obtain the scattered fields from each cylinder in the collection. The unknown scattering coefficients are determined through the use of general addition theorems that allows the various fields to be readily transformed between coordinate systems. The method is validated using various two-, three-, and four-cylinder configurations, and the number of coefficients that must be retained in the truncated series is examined. Benchmark configurations consisting of two- and three-cylinder systems with cylinders of varying radii are also presented. These solutions have been used to validate computational aeroacoustic solvers developed for complex geometries. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOUND wave scattering KW - SOUND KW - ACOUSTICAL engineering KW - HANKEL functions KW - CYLINDER (Shapes) N1 - Accession Number: 20565386; Sherer, Scott E. 1; Email Address: Scott.Sherer@wpafb.af.mil; Affiliations: 1 : Air Vehicles Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7521; Source Info: Feb2004, Vol. 115 Issue 2, p488; Subject Term: SOUND wave scattering; Subject Term: SOUND; Subject Term: ACOUSTICAL engineering; Subject Term: HANKEL functions; Subject Term: CYLINDER (Shapes); Number of Pages: 9p; Illustrations: 2 Diagrams, 13 Graphs; Document Type: Article L3 - 10.1121/1.1641790 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=20565386&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - GEN AU - Reed, Timothy S. AU - Heppard, Kurt A. AU - Corbett, Andrew C. T1 - I GET BY WITH A LITTLE HELP FROM MY FRIENDS. JO - Management Communication Quarterly JF - Management Communication Quarterly Y1 - 2004/02// VL - 17 IS - 3 M3 - Interview SP - 452 EP - 477 SN - 08933189 AB - This article presents an interview with rock and roll promoter Barry Fey, published in the February 1, 2004 issue of the journal Management Communication Quarterly. According to fey, the rock and roll industry has changed because of new technology and a consolidation made possible by deregulation and aggressive, well-financed, highly speculative corporations. These corporations have reshaped networks that are primarily social into those that are driven by corporate financial power and concerns. KW - Periodicals KW - Communication in organizations KW - Rock music KW - Rock groups KW - Corporations -- Finance KW - Fey, Barry N1 - Accession Number: 12176500; Reed, Timothy S. 1; Heppard, Kurt A. 2; Corbett, Andrew C. 3; Affiliations: 1: Air Force Institute of Technology.; 2: United States Air Force Academy.; 3: Rensselaer Polytechnic Institute.; Issue Info: Feb2004, Vol. 17 Issue 3, p452; Thesaurus Term: Periodicals; Thesaurus Term: Communication in organizations; Subject Term: Rock music; Subject Term: Rock groups; Subject Term: Corporations -- Finance; NAICS/Industry Codes: 522291 Consumer Lending; NAICS/Industry Codes: 451310 Book stores and news dealers; NAICS/Industry Codes: 414420 Book, periodical and newspaper merchant wholesalers; NAICS/Industry Codes: 323119 Other printing; NAICS/Industry Codes: 424920 Book, Periodical, and Newspaper Merchant Wholesalers; NAICS/Industry Codes: 451212 News Dealers and Newsstands; NAICS/Industry Codes: 711130 Musical Groups and Artists; People: Fey, Barry; Number of Pages: 26p; Document Type: Interview L3 - 10.1177/0893318903259403 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=12176500&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Luckarift, Heather R. AU - Spain, Jim C. AU - Naik, Rajesh R. AU - Stone, Morley O. T1 - Enzyme immobilization in a biomimetic silica support. JO - Nature Biotechnology JF - Nature Biotechnology Y1 - 2004/02// VL - 22 IS - 2 M3 - Article SP - 211 EP - 213 SN - 10870156 AB - Robust immobilization techniques that preserve the activity of biomolecules have many potential applications. Silicates, primarily in the form of sol-gel composites or functionalized mesoporous silica, have been used to encapsulate a wide variety of biomolecules but the harsh conditions required for chemical synthesis limit their applicability. Silaffin polypeptides from diatoms catalyze the formation of silica in vitro at neutral pH and ambient temperature and pressure. Here we show that butyrylcholinesterase entrapped during the precipitation of silica nanospheres retained all of its activity. Ninety percent of the soluble enzyme was immobilized, and the immobilized enzyme was substantially more stable than the free enzyme. The mechanical properties of silica nanospheres facilitated application in a flow-through reactor. The use of biosilica for enzyme immobilization combines the excellent support properties of a silica matrix with a benign immobilization method that retains enzyme activity. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature Biotechnology is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Biomimetics (Chemistry) KW - Biomolecules KW - Immobilized enzymes KW - Silicates KW - Microencapsulation N1 - Accession Number: 12130088; Luckarift, Heather R. 1; Spain, Jim C. 1; Email Address: jim.spain@tyndall.af.mil; Naik, Rajesh R. 2; Stone, Morley O. 2; Affiliations: 1: Air Force Research Laboratory, Airbase Technologies Division, 139 Barnes Drive, Suite #2, Tyndall Air Force Base, Florida 32403-5323, USA.; 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433-7702, USA.; Issue Info: Feb2004, Vol. 22 Issue 2, p211; Thesaurus Term: Biomimetics (Chemistry); Thesaurus Term: Biomolecules; Subject Term: Immobilized enzymes; Subject Term: Silicates; Subject Term: Microencapsulation; Number of Pages: 3p; Illustrations: 1 Black and White Photograph, 2 Graphs; Document Type: Article L3 - 10.1038/nbt931 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12130088&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Bugna, G.C. AU - Chanton, J.P. AU - Kelley, C.A. AU - Stauffer, T.B. AU - MacIntyre, W.G. AU - Libelo, E.L. T1 - A field test of δ13C as a tracer of aerobic hydrocarbon degradation JO - Organic Geochemistry JF - Organic Geochemistry Y1 - 2004/02// VL - 35 IS - 2 M3 - Article SP - 123 SN - 01466380 AB - The controlled release of a mixture simulating jet fuel was conducted to determine the effects of transport and degradation on the δ13C of reactants and products in a field setting. Benzene, toluene, naphthalene, xylenes, and decane were mixed with native soil and placed 4 m below ground into a surficial aquifer. The δ13C values of the hydrocarbons prior to and after emplacement were measured and no significant isotopic fractionation was observed following migration and partial degradation. The δ13C values of the compounds within the hydrocarbon mixture prior to addition and following 40 and 164 days in the field ranged from −26.6 to −30.0, −26.3 to −30.4 and −26.5 to −29.4‰, respectively. Also measured were the concentrations and δ13C values of respiration endproducts CO2 and CH4 in groundwater samples prior to and 164, 278, 468, 642 and 831 days after the contamination of the surficial aquifer. Endproduct concentrations were clearly elevated relative to pre-emplacement values indicating microbial respiration of the added hydrocarbon mixture. Isotope mass balance calculations yielded similar δ13C values for the sum of the respiration products and the added hydrocarbon mixture. Our results indicate that the products of hydrocarbon respiration reflect the δ13C of the substrates, and in less controlled contaminated field settings DIC isotopic values may be useful for estimating hydrocarbon degradation when DIC up-gradient of the spill has a δ13C value different from that of the contaminants. [Copyright &y& Elsevier] AB - Copyright of Organic Geochemistry is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUEL KW - Benzene KW - Toluene KW - Pollutants KW - Jet planes N1 - Accession Number: 11882080; Bugna, G.C. 1; Chanton, J.P. 1; Email Address: jchanton@mailer.fsu.edu; Kelley, C.A. 2; Stauffer, T.B. 3; MacIntyre, W.G. 4; Libelo, E.L. 3; Affiliations: 1: Department of Oceanography, Florida State University, Tallahassee, FL 32306-4320, USA; 2: Department of Geological Sciences, University of Missouri, Columbia, MO 65211, USA; 3: Air Force Research Laboratory, Airbase Technologies Division, Tyndall Air Force Base, FL 32403-5323, USA; 4: Virginia Institute of Marine Sciences, Gloucester Point, VA 23062, USA; Issue Info: Feb2004, Vol. 35 Issue 2, p123; Thesaurus Term: FUEL; Thesaurus Term: Benzene; Thesaurus Term: Toluene; Thesaurus Term: Pollutants; Subject Term: Jet planes; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.orggeochem.2003.10.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=11882080&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR T1 - EFFECT OF HYDRATION STATE ON HEART RATE-BASED ESTIMATES OF VO2MAX. AU - Southard, Teresa L. AU - Pugh, Joseph W. JO - Professionalization of Exercise Physiology JF - Professionalization of Exercise Physiology Y1 - 2004/02// VL - 7 IS - 1 SP - 19 EP - 25 SN - 10995862 N1 - Accession Number: 16215978; Author: Southard, Teresa L.: 1 email: teresa.southard@usafa.af.mil. Author: Pugh, Joseph W.: 1 ; Author Affiliation: 1 United States Air Force Academy, Colorado; No. of Pages: 7; Language: English; Publication Type: Article; Update Code: 20050224 N2 - Submaximal tests of aerobic fitness typically extrapolate oxygen consumption from heart rate. Because heart rate is influenced by hydration level, this study was conducted to investigate the effects of hydration status on the VO2max scores predicted by a submaximal cycle ergometry assessment. Fifteen male cadets at the U.S. Air Force Academy took the heart rate-based USAF submaximal cycle ergometry fitness test twice over a 3-day period, once following a 12-hour fluid-restriction period (the dehydrated trial) and once following a hydration protocol in which the subjects drank a volume of water equivalent to 2% body weight 10 hours before the test and an additional volume equivalent to 1% body weight at least 30 minutes before the test (the hydrated trial). Prior to testing, subjects were weighed and a urine sample was collected. The urine specific gravity (USG) was measured using a refractometer. Our results indicated that, during the dehydrated trial, subjects' USG was significantly higher and their weight and VO2max scores were significantly lower than during the hydrated trial. The change in the VO2max score was significantly correlated to the change in percent body weight between the two trials. These data suggest that hydration status affects heart rate-based, submaximal estimates of VO2max. ABSTRACT FROM AUTHOR KW - *OXYGEN in the body KW - *HEART beat KW - *DYNAMOMETER KW - *DEHYDRATION (Physiology) KW - *PHYSICAL fitness KW - HYDRATION KW - Dehydration KW - Submaximal Cycle Ergometry KW - USAF Fitness Test UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=16215978&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Lucia, David J. AU - Beran, Philip S. AU - Silva, Walter A. T1 - Reduced-order modeling: new approaches for computational physics JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences J1 - Progress in Aerospace Sciences PY - 2004/02// Y1 - 2004/02// VL - 40 IS - 1/2 M3 - Article SP - 51 SN - 03760421 AB - In this paper, we review the development of new reduced-order modeling techniques and discuss their applicability to various problems in computational physics. Emphasis is given to methods based on Volterra series representations, the proper orthogonal decomposition, and harmonic balance. Results are reported for different nonlinear systems to provide clear examples of the construction and use of reduced-order models (ROMs), particularly in the multi-disciplinary field of computational aeroelasticity. Unsteady aerodynamic and aeroelastic behaviors of two-dimensional and three-dimensional geometries are described. Large increases in computational efficiency are obtained through the use of ROMs, thereby justifying the initial computational expense of constructing these models and motivating their use for multi-disciplinary design analysis. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS KW - VOLTERRA series KW - NONLINEAR systems KW - AEROELASTICITY N1 - Accession Number: 12376310; Source Information: Feb2004, Vol. 40 Issue 1/2, p51; Subject Term: PHYSICS; Subject Term: VOLTERRA series; Subject Term: NONLINEAR systems; Subject Term: AEROELASTICITY; Subject Term: ; Number of Pages: 67p; ; Document Type: Article; L3 - 10.1016/j.paerosci.2003.12.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12376310&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 106766650 T1 - College coaches corner. Learning from each other: the best and worst parts of your job. AU - Hedrick A AU - Rogers R AU - Dahoda J AU - Bennet S Y1 - 2004/02// N1 - Accession Number: 106766650. Language: English. Entry Date: 20050712. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletic Training KW - Muscle Strengthening KW - Athletes, College KW - Job Satisfaction KW - Colleges and Universities SP - 72 EP - 73 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 26 IS - 1 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. AB - The strength and conditioning profession is a very demanding career, but it is highly rewarding when one considers its positive experiences. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106766650&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Learning From Each Other: The Best and Worst Parts of Your Job. AU - Hedrick, Allen JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) Y1 - 2004/02// VL - 26 IS - 1 SP - 72 EP - 73 SN - 15241602 N1 - Accession Number: 13444949; Author: Hedrick, Allen: 1 email: ARHedrick@Adelphia.net. ; Author Affiliation: 1 United States Air Force Academy, Colorado Springs, Colorado; No. of Pages: 2; Language: English; Publication Type: Article; Update Code: 20040617 N2 - The strength and conditioning profession is a very demanding career, but it is highly rewarding when one considers its positive experiences. ABSTRACT FROM AUTHOR KW - *PERSONAL trainers KW - *COACHES (Athletics) KW - *ATHLETES KW - JOB satisfaction KW - QUALITY of work life UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=13444949&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 2004-18198-005 AN - 2004-18198-005 AU - Billock, Vincent A. AU - Tsou, Brian H. T1 - What do catastrophic visual binding failures look like? JF - Trends in Neurosciences JO - Trends in Neurosciences JA - Trends Neurosci Y1 - 2004/02// VL - 27 IS - 2 SP - 84 EP - 89 CY - Netherlands PB - Elsevier Science SN - 0166-2236 AD - Billock, Vincent A., General Dynamics, Suite 200, 5200 Springfield Pike, Dayton, OH, US, 45431 N1 - Accession Number: 2004-18198-005. PMID: 15102487 Partial author list: First Author & Affiliation: Billock, Vincent A.; General Dynamics, Dayton, OH, US. Release Date: 20050425. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Neurons; Receptor Binding; Vision; Visual Perception. Classification: Neuropsychology & Neurology (2520). Population: Human (10). References Available: Y. Page Count: 6. Issue Publication Date: Feb, 2004. AB - Ordinary vision is considered a binding success: all the pieces and aspects of an image are bound together, despite being processed by many different neurons in several different cortical areas. How this is accomplished is a key problem in visual neuroscience. The study of visual binding might be facilitated if we had ways to induce binding failures. A particularly interesting failure would involve a loss of the physical integrity of the image. Here, we identify conditions that induce such perceptual failures (e.g. the melting together of equiluminant colored images and the fragmentation of retinally stabilized images) and we suggest that these should studied using electrophysiological measures of binding. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - visual binding KW - perceptual failures KW - binding failure KW - neurons KW - vision KW - 2004 KW - Neurons KW - Receptor Binding KW - Vision KW - Visual Perception KW - 2004 DO - 10.1016/j.tins.2003.12.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-18198-005&site=ehost-live&scope=site UR - vince.billock@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2004-14367-003 AN - 2004-14367-003 AU - Murphy, Ryan O. AU - Rapoport, Amnon AU - Parco, James E. T1 - Population learning of cooperative behavior in a three-person centipede game. JF - Rationality and Society JO - Rationality and Society Y1 - 2004/02// VL - 16 IS - 1 SP - 91 EP - 120 CY - US PB - Sage Publications SN - 1043-4631 SN - 1461-7358 AD - Murphy, Ryan O., University of Arizona, Department of Management and Policy, 405 McClelland Hall, Tucson, AZ, US, 85721 N1 - Accession Number: 2004-14367-003. Partial author list: First Author & Affiliation: Murphy, Ryan O.; Eller Business School, University of Arizona, Tucson, AZ, US. Release Date: 20050321. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cooperation; Games; Population. Minor Descriptor: Robotics. Classification: Group & Interpersonal Processes (3020). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 30. Issue Publication Date: Feb, 2004. AB - We consider mixed populations (N=21) of genuine (humans) and artificial (robots) agents repeatedly interacting in small groups whose composition is changed randomly from round to round. Our purpose is to study the spread of cooperative or non-cooperative behavior over time in populations playing a 3-person centipede game by manipulating the behavior of the robots (cooperative vs. non-cooperative) and their proportion in the population. Our results convey a positive message: adding a handful of cooperative robots increases the propensity of the genuine subjects to cooperate over time, whereas adding a handful of non-cooperative agents does not decrease this propensity. If there are enough hard-core cooperative subjects in the population, they not only negate the behavior of the non-cooperative robots but also induce other subjects to behave more cooperatively. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cooperative behavior KW - population learning KW - three-person centipede game KW - 2004 KW - Cooperation KW - Games KW - Population KW - Robotics KW - 2004 DO - 10.1177/1043463104039876 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-14367-003&site=ehost-live&scope=site UR - james.parco@usafa.af.mil UR - amnon@u.arizona.edu UR - rmurphy@eller.arizona.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2004-18289-009 AN - 2004-18289-009 AU - Billock, Vincent A. AU - Tsou, Brian H. T1 - Color, qualia, and psychophysical constraints on equivalence of color experience. JF - Behavioral and Brain Sciences JO - Behavioral and Brain Sciences JA - Behav Brain Sci Y1 - 2004/02// VL - 27 IS - 1 SP - 164 EP - 165 CY - United Kingdom PB - Cambridge University Press SN - 0140-525X SN - 1469-1825 AD - Billock, Vincent A., General Dynamics, Inc., U.S. Air Force Research Laboratory, Suite 200, 5200 Springfield Pike, Dayton, OH, US, 45431 N1 - Accession Number: 2004-18289-009. Partial author list: First Author & Affiliation: Billock, Vincent A.; General Dynamics, Inc., U.S. Air Force Research Laboratory, Dayton, OH, US. Release Date: 20041012. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Comment/Reply. Language: English. Major Descriptor: Brain; Color Perception; Consciousness States; Visual Perception. Minor Descriptor: Behavior. Classification: Visual Perception (2323). Population: Human (10). Page Count: 2. Issue Publication Date: Feb, 2004. AB - It has been suggested that difficult-to-quantify differences in visual processing may prevent researchers from equating the color experience of different observers. However, spectral locations of unique hues are remarkably invariant with respect to everything other than gross differences in preretinal and photoreceptor absorptions. This suggests a stereotyping of neural color processing and leads us to posit that minor differences in observer neurophysiology may be irrelevant to color experience. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - color perception KW - isomorphism constraint KW - brain KW - photoreceptor absorptions KW - color experience KW - spectral locations KW - psychophysical constraints KW - color constraints KW - visual processing KW - 2004 KW - Brain KW - Color Perception KW - Consciousness States KW - Visual Perception KW - Behavior KW - 2004 DO - 10.1017/S0140525X04260046 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-18289-009&site=ehost-live&scope=site UR - Brian.Tsou@wpafb.af.mil UR - Vince.Billock@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-01709-005 AN - 2005-01709-005 AU - Whitmore, Jeffrey N. AU - Fischer, Joseph R. Jr. AU - Storm, William F. T1 - Hypnotic Efficacy of Zaleplon for Daytime Sleep in Rested Individuals. JF - Sleep: Journal of Sleep and Sleep Disorders Research JO - Sleep: Journal of Sleep and Sleep Disorders Research JA - Sleep Y1 - 2004/02// VL - 27 IS - 5 SP - 895 EP - 898 CY - US PB - American Academy of Sleep Medicine SN - 0161-8105 SN - 1550-9109 AD - Whitmore, Jeffrey N., Air Force Research Laboratory (AFRL/HEPM), 2485 Gillingham Drive, Brooks City-Base, TX, US, 78235-5105 N1 - Accession Number: 2005-01709-005. PMID: 15453547 Other Journal Title: Sleep: Journal of Sleep Research & Sleep Medicine. Partial author list: First Author & Affiliation: Whitmore, Jeffrey N.; Air Force Research Laboratory, Brooks City-Base, TX, US. Release Date: 20050718. Correction Date: 20170216. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Drug Dosages; Hypnotic Drugs; Placebo; Sleep; Sleep Wake Cycle. Classification: Psychopharmacology (2580). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Automated Neuropsychological Assessment Metrics battery; Profile of Mood States, a modified Stanford Sleepiness Scale; sleep-aid symptom survey; Psychomotor Vigilance Test DOI: 10.1037/t58155-000; Word Memory Test (The). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 4. Issue Publication Date: Feb, 2004. AB - Study Objectives: The primary objective of this study was to determine whether zaleplon (10 mg) effectively promoted sleep during the daytime in well-rested individuals when compared to placebo. A secondary objective was to see if, while not expected, the use of zaleplon impacted the performance of well-rested individuals upon awakening. Design: Repeated measures with 2 within-subject factors: drug (placebo/zaleplon) and trial (hourly testing during waking hours). Polysomnographic variables were recorded during a 3.5-hour nap following drug administration. Performance measures and subjective reports were collected during every waking trial of each session. Setting: The study was conducted at the Chronobiology and Sleep Laboratory located at Brooks Air Force Base. Participants: Twelve participants, 6 men and 6 women. Interventions: 10-mg zaleplon or placebo capsules, single afternoon dose. Drug administration was counterbalanced and double-blinded. Measurements and Results: Zaleplon allowed participants to obtain significantly more slow-wave sleep than under placebo. There was also a trend for participants under zaleplon to accomplish a greater amount of sleep than under placebo. Performance was not adversely impacted following a 3.5-hour daytime sleep under zaleplon, nor were any undesirable symptoms induced. Conclusions: Zaleplon improves sleep quality when used by rested individuals to accomplish daytime sleep. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - daytime sleep KW - well rested individuals KW - drug administration KW - hypnotic efficacy KW - slow wave sleep KW - zaleplon KW - placebo KW - 2004 KW - Drug Dosages KW - Hypnotic Drugs KW - Placebo KW - Sleep KW - Sleep Wake Cycle KW - 2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-01709-005&site=ehost-live&scope=site UR - jeff.whitmore@brooks.af.mil DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2004-19639-008 AN - 2004-19639-008 AU - Staal, Mark A. ED - Shohov, Serge P. ED - Shohov, Serge P., (Ed) T1 - Stress and Suicide in the Military: Service-Specific Risk Factors. T2 - Advances in Psychology Research, Volume 30. Y1 - 2004/// SP - 155 EP - 192 CY - Hauppauge, NY, US PB - Nova Science Publishers SN - 1-59033-943-6 N1 - Accession Number: 2004-19639-008. Partial author list: First Author & Affiliation: Staal, Mark A.; Department of Behavioral Sciences and Leadership, United States Air Force Academy, CO, US. Release Date: 20060705. Correction Date: 20160616. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Reference Book. ISBN: 1-59033-943-6, Hardcover. Language: English. Major Descriptor: Military Personnel; Risk Factors; Stress; Suicide. Classification: Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 38. AB - Men and women serving in today's military are a reflection of society in general. This is in large part why these two diverse groups share various risk factors for stress and suicide. However, significant differences among military service organizations and military branches exist, and these differences appear to contribute to somewhat unique stress and suicide risk profiles among military personnel. While stress and suicide are different constructs, there is a clear relationship between the two, and stress is believed to be a direct pre-cursor to suicidal attempts and/or completions. Data obtained through the U.S. Air Force's Office of Special Investigations and the U.S. Air Force Institute for Environment, Safety, and Occupational Health Risk Analysis were examined along with previously published data from the U.S. Army, U.S. Navy, and U.S. Marine Corps through the Department of Defense's Worldwide Casualty System (WCS), its Defense Manpower Data Center, the U.S. Army's Human Resources Directorate and the Navy's Personnel Command in a comparative analysis. The goal of this study was to construct service-specific risk management profiles concerning stress and suicide across branches of the U.S. military. The results of these analyses are presented and discussed further. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - military service organizations KW - military branches KW - military personnel KW - stress KW - suicide risk KW - 2004 KW - Military Personnel KW - Risk Factors KW - Stress KW - Suicide KW - 2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-19639-008&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Mustafa, Shamimunisa B. AU - DiGeronimo, Robert J. AU - Petershack, Jean A. AU - Alcorn, Joseph L. AU - Seidner, Steven R. T1 - Postnatal glucocorticoids induce α-ENaC formation and regulate glucocorticoid receptors in the preterm rabbit lung. JO - American Journal of Physiology: Lung Cellular & Molecular Physiology JF - American Journal of Physiology: Lung Cellular & Molecular Physiology Y1 - 2004/01// VL - 30 IS - 1 M3 - Article SP - L73 EP - L80 SN - 10400605 AB - Presents a study that evaluated the effect of postnatal glucocorticoids (GC) on lung α-epithelial NA+ (ENaC) mRNA expression in preterm 29-day gestational age fetal rabbits. Postnatal treatment of GA fetuses with 0.5 milligram per kilogram of dexamethasone; Two- and 22-fold increase in lung α-ENaC mRNA expression compared with saline-treated counterparts; Glucocorticoid receptor antagonist RU-486 in fetal distal lung epithelial cells. KW - GLUCOCORTICOIDS KW - LUNGS KW - EPITHELIAL cells KW - SODIUM channels KW - GENE expression KW - RABBITS as laboratory animals KW - CELL receptors N1 - Accession Number: 12314208; Mustafa, Shamimunisa B. 1; Email Address: mustafa@uthscsa.edu; DiGeronimo, Robert J. 2; Petershack, Jean A. 1; Alcorn, Joseph L. 3; Seidner, Steven R. 1; Source Information: Jan2004, Vol. 30 Issue 1, pL73; Subject: GLUCOCORTICOIDS; Subject: LUNGS; Subject: EPITHELIAL cells; Subject: SODIUM channels; Subject: GENE expression; Subject: RABBITS as laboratory animals; Subject: CELL receptors; Number of Pages: 8p; Illustrations: 11 Black and White Photographs, 7 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=12314208&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Unangst Jr., Edward T. AU - Wunder, Bruce A. T1 - Effect of Supplemental High-fat Forage on Body Composition in Wild Meadow Voles (Microtus pennsylvanicus). JO - American Midland Naturalist JF - American Midland Naturalist Y1 - 2004/01// VL - 151 IS - 1 M3 - Article SP - 146 EP - 153 PB - University of Notre Dame / American Midland Naturalist SN - 00030031 AB - We evaluated the effect of dietary fat on body fat of meadow voles (Microtus pennsylvanicus) in the field after a 6-wk supplemental feeding period with a 25% dietary-fat food. The initial 3-wk period showed no difference in body composition, but, after 6-wk, 33% of captures showed body fat exceeding 10%, levels atypical of wild populations. Fattening levels found with supplemental food were similar to body fat levels seen in lab-reared or wild animals removed and kept under lab conditions. Our results suggest that the lean body composition found in wild populations is influenced strongly by high-fiber and low dietary-fat forage, along with other environmental constraints. When provided easily available and abundant high dietary-fat food in the wild, a higher percentage of individuals increased body fat to levels rarely seen under natural conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of American Midland Naturalist is the property of University of Notre Dame / American Midland Naturalist and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Body composition KW - Feeds KW - Microtus KW - Fat KW - Fibers N1 - Accession Number: 12087906; Unangst Jr., Edward T. 1; Email Address: tom.unangst@usafa.af.mil; Wunder, Bruce A. 2; Affiliations: 1: Department of Biology, US Air Force Academy, Colorado Springs 80840; 2: Department of Biology, Colorado State University, Fort Collins 80538; Issue Info: Jan2004, Vol. 151 Issue 1, p146; Thesaurus Term: Body composition; Thesaurus Term: Feeds; Thesaurus Term: Microtus; Subject Term: Fat; Subject Term: Fibers; NAICS/Industry Codes: 424910 Farm Supplies Merchant Wholesalers; NAICS/Industry Codes: 418310 Agricultural feed merchant wholesalers; NAICS/Industry Codes: 311515 Butter, cheese, and dry and condensed dairy product manufacturing; NAICS/Industry Codes: 444220 Nursery, Garden Center, and Farm Supply Stores; Number of Pages: 8p; Illustrations: 1 Chart; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12087906&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Jauchem, J. R. AU - Ryan, K. L. AU - Tehrany, M. R. T1 - Effects of histamine receptor blockade on cardiovascular changes induced by 35 GHz radio frequency radiation heating. JO - Autonomic & Autacoid Pharmacology JF - Autonomic & Autacoid Pharmacology Y1 - 2004/01// VL - 24 IS - 1 M3 - Article SP - 17 EP - 28 SN - 14748665 AB - 1 The role of histamine in heat-induced cardiovascular changes is uncertain. The purpose of this study was to examine effects of histamine H-1- and H-2-antagonism on heart rate, mean arterial blood pressure (MAP), localized body temperature changes, survival times, and lethal body temperatures that occur during the exposure of anaesthetized rats to 35 GHz radio frequency radiation (RFR). 2 Forty-eight ketamine-anaesthetized Sprague–Dawley rats were exposed, in several different treatment groups ( n = 8 in each), to 35 GHz RFR at a level that resulted in significant body heating and subsequent death. During irradiation, a continuous increase in heart rate and a biphasic response in blood pressure (initial increase followed by a decrease) were observed in all groups of animals. 3 An H-1-antagonist, diphenhydramine (1 mg kg−1 body wt) and an H-2-antagonist, cimetidine (5 mg kg−1), administered after sustained RFR exposure, failed to reverse the RFR-induced hypotension. High doses of the drugs (5 and 10 mg kg−1, respectively) also did not alter the response. Post-RFR survival time was significantly decreased in the high-dose drug-treated group, compared with vehicle-treated (0.9% NaCl, 50% ethanol and 50% D5W) controls. 4 In experiments in which the two drugs were administered prior to RFR exposure, MAP in animals receiving high-dose antihistamines was significantly depressed compared with that of vehicle-treated animals during the first 35 min of RFR exposure. Antihistamine pretreatment, however, did not alter the total RFR exposure time required for death to occur. 5 In summary, pharmacological blockade of H-1 and H-2 receptors is not beneficial in anaesthetized rats made hypotensive by RFR exposure. This indicates that activation of H-1 and H-2 receptors by histamine does not occur to any significant extent and does not mediate the hypotensive response developed in this model of hyperthermia. [ABSTRACT FROM AUTHOR] AB - Copyright of Autonomic & Autacoid Pharmacology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HISTAMINE KW - HEART beat KW - BLOOD pressure KW - MEDICAL thermography KW - BODY temperature KW - ANESTHESIA adjuvants KW - blood pressure KW - H1 receptors KW - H2 receptors KW - heart rate KW - histamine KW - radio frequency radiation N1 - Accession Number: 14118201; Jauchem, J. R. 1; Ryan, K. L. 2; Tehrany, M. R. 2; Source Information: Jan2004, Vol. 24 Issue 1, p17; Subject: HISTAMINE; Subject: HEART beat; Subject: BLOOD pressure; Subject: MEDICAL thermography; Subject: BODY temperature; Subject: ANESTHESIA adjuvants; Author-Supplied Keyword: blood pressure; Author-Supplied Keyword: H1 receptors; Author-Supplied Keyword: H2 receptors; Author-Supplied Keyword: heart rate; Author-Supplied Keyword: histamine; Author-Supplied Keyword: radio frequency radiation; Number of Pages: 12p; Document Type: Article L3 - 10.1111/j.1474-8673.2004.00309.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=14118201&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - O'Loughlin, Edward J. AU - Burris, David R. T1 - REDUCTION OF HALOGENATED ETHANES BY GREEN RUST. JO - Environmental Toxicology & Chemistry JF - Environmental Toxicology & Chemistry Y1 - 2004/01// VL - 23 IS - 1 M3 - Article SP - 41 EP - 48 SN - 07307268 AB - Green rusts, mixed FeII/FeIII hydroxide minerals present in many suboxic environments, have been shown to reduce a number of organic and inorganic contaminants. The reduction of halogenated ethanes was examined in aqueous suspensions of green rust, both alone and with the addition of AgI (AgGR) and CuII (CuGR). Hexachloroethane (HCA), pentachloroethane (PCA), 1,1,1,2-tetrachloroethane (1,1,1,2-TeCA), 1,1,2,2-tetrachloroethane (1,1,2,2-TeCA), 1,1,1-trichloroethane (1,1,1-TCA), 1,1,2-trichloroethane (1,1,2-TCA), 1,1-dichloroethane (1,1-DCA), and 1,2-dibromoethane were reduced in the presence of green rust alone, AgGR, or CuGR; only 1,2-dichloroethane and chloroethane were nonreactive. The reduction was generally more rapid for more highly substituted ethanes than for ethanes having fewer halogen groups (HCA > PCA > 1,1,1,2-TeCA . 1,1,1-TCA > 1,1,2,2- TeCA > 1,1,2-TCA > 1,1-DCA), and isomers with the more asymmetric distributions of halogen groups were more rapidly reduced than the isomer with greater symmetry (e.g., 1,1,1-TCA > 1,1,2-TCA). The addition of AgI or CuII to green rust suspensions resulted in a substantial increase in the rate of halogenated ethane reduction as well as significant differences in the product distributions with respect to green rust alone. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Toxicology & Chemistry is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Ethanes KW - Ethylene dibromide KW - Hydrocarbons KW - Halogenation KW - Hydroxide minerals KW - Chlorinated ethanes KW - Chlorinated hydrocarbons KW - Fe(II)-Fe(III) hydroxide KW - Reductive dehalogenation N1 - Accession Number: 15999625; O'Loughlin, Edward J. 1,2; Email Address: oloughlin@anl.gov; Burris, David R. 1,3; Affiliations: 1: Air Force Research Laboratory, AFRL/MLQR, Tyndall AFB, Florida 32403-5301, USA; 2: Environmental Research Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA; 3: Integrated Science and Technology, 433 Harrison Avenue, Panama City, Florida 32401, USA; Issue Info: Jan2004, Vol. 23 Issue 1, p41; Thesaurus Term: Ethanes; Thesaurus Term: Ethylene dibromide; Thesaurus Term: Hydrocarbons; Subject Term: Halogenation; Subject Term: Hydroxide minerals; Author-Supplied Keyword: Chlorinated ethanes; Author-Supplied Keyword: Chlorinated hydrocarbons; Author-Supplied Keyword: Fe(II)-Fe(III) hydroxide; Author-Supplied Keyword: Reductive dehalogenation; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; Number of Pages: 8p; Illustrations: 1 Diagram, 1 Chart, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=15999625&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - CHAP ID - 2004-17247-007 AN - 2004-17247-007 AU - Narkevicius, Jennifer McGovern AU - Heffner, Peggy L. AU - Veltman, Hans (J. A.) AU - Jansen, Chris AU - Itoh, Makoto AU - Inahashi, Hiromasa AU - Tanaka, Kenji AU - Scerbo, Mark W. AU - Freeman, Frederick G. AU - Mikulka, Peter J. AU - Galster, Scott M. AU - Parasuraman, Raja AU - Andre, Anthony D. AU - Kingsburg, Jennifer AU - Shelden, Stephen AU - Gao, Ji AU - Lee, John D. AU - Fallon, Corey K. AU - Nica, Nicolae AU - Bliss, James P. AU - Bustamante, Ernesto A. AU - Squire, Peter N. AU - Bagheri, Nasrine AU - Jamieson, Greg A. AU - Ma, Ruiqi AU - Kaber, David B. AU - Chow, Mo-Yuen AU - Currie, Nancy AU - Schmorrow, Dylan AU - Raley, Colby AU - Dickinson, Blair AU - Diethe, Tom AU - Sampaio, José João Martins AU - Guerra, António Abreu ED - Vincenzi, Dennis A. ED - Mouloua, Mustapha ED - Hancock, Peter A. ED - Vincenzi, Dennis A., (Ed) ED - Mouloua, Mustapha, (Ed) ED - Hancock, Peter A., (Ed) T1 - Automation and Human Performance. T2 - Human performance, situation awareness and automation: Current research and trends, Vol 1&2 HPSAA II. Y1 - 2004/// SP - 1 EP - 81 CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-5341-3 N1 - Accession Number: 2004-17247-007. Partial author list: First Author & Affiliation: Narkevicius, Jennifer McGovern; AINC Engineering Services, LLC, US. Release Date: 20050425. Correction Date: 20170126. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-8058-5341-3, Paperback. Language: English. Conference Information: Human Performance, Situation Awareness and Automation Conference (HPSAA II), 2nd, Mar, 2004, Daytona Beach, FL, US. Conference Note: Presented at the aforementioned conference. Major Descriptor: Automation; Human Factors Engineering; Human Machine Systems; Human Machine Systems Design; Performance. Minor Descriptor: Computer Software; Human Computer Interaction; Information Systems; Monitoring; Robotics; Trust (Social Behavior); Weapons. Classification: Human Factors Engineering (4010); Intelligent Systems (4100). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). Page Count: 81. AB - 'Human Requirements in Automated Weapons Systems' / Jennifer McGovern Narkevicius and Peggy L. Heffner / 'The Adaptive Operator' / Hans (J.A.) Veltman and Chris Jansen 'Overtrust Due to Unintended Use of Automation' / Makoto Itoh, Hiromasa Inahashi and Kenji Tanaka 'Event Rate Changes and Monitoring Performance Using a Biocybernetic Adaptive System' / Mark W. Scerbo, Frederick G. Freeman and Peter J. Mikulka 'Task Dependencies in Stage-Based Examinations of the Effects of Unreliable Automation' / Scott M. Galster and Raja Parasuraman 'Automation in Consumer Software: New Domain, Same Issues / Anthony D. Andre, Jennifer R. Kingsburg and Stephen G. Shelden 'Information Sharing, Trust, and Reliance--A Dynamic Model of Multi-Operator Multi-Automation Interaction' / Ji Gao and John D. Lee 'Alarm Mistrust with Signal Duration as a cue for Alarm Validity' / Corey K. Fallen, Nicolae Nica and James P. Bliss 'Effects of Varying the Threshold of Alarm Systems on Human Performance' / Ernesto A. Bustamante and James P. Bliss 'The Effects of Levels of Automation in the Human Control of Multiple Robots in the Roboflag Simulation Environment' / Peter N. Squire, Scott M. Galster and Raja Parasuraman 'Considering Subjective Trust and Monitoring Behavior in Assessing Automation-Induced 'Complacency'' / Nasrine Bagheri and Greg A. Jamieson 'A 'Distance'-Based Concept of Automation for Human-Robot Interaction' / Ruiqi Ma, David B. Kaber, Mo-Yuen Chow and Nancy Currie 'Toward an Augmented Cockpit' / Tom R. Diethe, Blair T. Dickson, Dylan Schmorrow and Colby Raley 'The day 'God' failed or Overtrust in Automation. A Portuguese Case Study' / Jose Joao Martins Sampaio and Antonio Abreu Guerra 'When Every Minute Counts, All Automatic External Defibrillators Are not Created Equal' / Anthony D. Andre and Jennifer R. Kingsburg (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - automation KW - human performance KW - weapons KW - software KW - information sharing KW - trust KW - reliance KW - alarm systems KW - robots KW - human robot interaction KW - defibrillators KW - 2004 KW - Automation KW - Human Factors Engineering KW - Human Machine Systems KW - Human Machine Systems Design KW - Performance KW - Computer Software KW - Human Computer Interaction KW - Information Systems KW - Monitoring KW - Robotics KW - Trust (Social Behavior) KW - Weapons KW - 2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-17247-007&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2004-17247-002 AN - 2004-17247-002 AU - Masys, A. J. AU - Olafsen, Runar AU - Brathen, Karsten AU - Salmon, Paul AU - Stanton, Neville AU - Walker, Guy AU - Green, Damian AU - Furukawa, Hiroshi AU - Nakatani, Hiroyuki AU - Inagaki, Toshiyuki AU - Plott, Christopher C. AU - Endsley, Mica R. AU - Strater, Laura D. AU - Simpson, Brian D. AU - Bolia, Robert S. AU - Draper, Mark H. AU - Keller, John AU - Lebiere, Christian AU - Shay, Richard F. AU - Latorella, Kara AU - Redden, Elizabeth S. AU - Elliot, LInda R. AU - Turner, Daniel D. AU - Blackwell, Cynthia L. AU - Baber, Chris AU - Zheng, Xianjun Sam AU - McConkie, George W. AU - Tai, Yu-Chi AU - Pharmer, James A. AU - Weaver, Melissa D. AU - Shaw, Robert L. AU - Brickman, Bart J. AU - Hettingder, LawrenceJ. AU - Siemieniuch, Carys E. AU - Sinclair, Murray A. AU - Blickensderfer, Beth AU - Burgdorft, Charles E. AU - Burns, John AU - Bolstad, Cheryl A. AU - Prinzel, Lawrence J. III AU - Kramer, Lynda J. AU - Arthur, Jarvis J. AU - Bailey, Randall E. AU - Obradovich, Jodi Heintz AU - Smith, Philip J. AU - Brill, J. Christopher AU - Gilson, Richard D. AU - Mouloua, Mustapha AU - Hancock, Peter A. AU - Terrence, Peter I. AU - Hebraud, Carine AU - Pene, Nayen AU - Rognin, Laurence AU - Hoffman, Eric AU - Zeghal, Karim AU - Spencer, Amy L. AU - Caisse, Steve AU - Beck, Carla AU - Andre, Tony AU - Krozel, Jimmy AU - Davidson, Goli AU - Jakovi, Jorn AU - Lorenz, Bernd AU - Biella, Marcus AU - Schaab, Brooke B. AU - Dressel, J. Douglas AU - Geitz, Sarah AU - Lui, Dahai AU - Vencenzi, Dennis AU - Cook, Malcolm James AU - Thompson, Helen S. E. AU - Adams, Corinne S. G. AU - Angus, Carol S. AU - Hughes, Gwen AU - Carson, Derek ED - Olafsen, Runar ED - Vincenzi, Dennis A. ED - Mouloua, Mustapha ED - Hancock, Peter A. ED - Vincenzi, Dennis A., (Ed) ED - Mouloua, Mustapha, (Ed) ED - Hancock, Peter A., (Ed) T1 - Situation awareness. T2 - Human performance, situation awareness and automation: Current research and trends, Vol 1&2 HPSAA II. Y1 - 2004/// SP - 39 EP - 171 CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-5341-3 N1 - Accession Number: 2004-17247-002. Partial author list: First Author & Affiliation: Masys, A. J.; University of Leicester, Scarman Center, LEC, United Kingdom. Release Date: 20050425. Correction Date: 20170126. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-8058-5341-3, Paperback. Language: English. Conference Information: Human Performance, Situation Awareness and Automation Conference (HPSAA II), 2nd, Mar, 2004, Daytona Beach, FL, US. Conference Note: Presented at the aforementioned conference. Major Descriptor: Awareness; Human Factors Engineering; Human Machine Systems; Human Machine Systems Design; Performance. Classification: Human Factors Engineering (4010). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). Page Count: 133. AB - 'Situation Awareness: An Actor Network Theory Perspective' / Anthony J. Masys 'Situation Awareness: The Abstraction Hierarchy and the Design of User Interfaces of Command and Control Decision Support Systems' / Runar Olafsen and Karsten Brathen 'Situation Awareness in Military Command and Control (C4i) Systems: The Development of a Tool to Measure SA in Military Command and Control Systems and Battlefield Environments. Stage 1: SA Methods Review' / Paul Salmon, Neville Stanton, Guy Walker and Damian Green 'Intention-Represented Ecological Interface Design for Supporting Collaboration with Automation: Situation Awareness and Control in Inexperienced Scenarios' / Hiroshi Furukawa, Hiroyuki Nakatani and Toshiyuki Inagaki 'Integrating SAGAT into Human Performance Models' / Christopher C. Plott, Mica R. Endsley and Laura D. Strater 'Spatial Audio Display Concepts Supporting Situation Awareness for Operators of Unmanned Aerial Vehicles' / Brian D. Simpson, Robert S. Bolia and Mark H. Draper 'Cockpit System Situational Awareness Modeling Tool' / John Keller and Christian Lebiere, Richard F. Shay and Kara Latorella 'Development of a Metric for Collaborative Situation Awareness' / Elizabeth S. Redden, Linda R. Elliot and Daniel D. Turner 'Measuring and Predicting SA in C4i: Development and Testing of a Refined SA Measurement Technique, and a New Concept for SA Prediction' / Guy H. Walker, Neville A. Stanton, Paul Salmon, and Damian Green 'Toward a Theory of Agent-Based Systemic Situational Awareness' / Neville Stanton and Chris Baber, Guy Walker, Paul Salmon and Damian Green 'Dynamic Monitoring of Traffic Flow: The Driver's Situation Awareness' / Xianjun Sam Zheng, George W. McConkie and Yu-chi Tai 'Situational Awareness and Usability with an Automated Task Management System' / James A. Pharmer and Melissa D. Weaver 'The Global Implicit Measure (GIM): Concept and Experience' / Robert L. Shaw, Bart J. Brickman and Lawrence J. Hettinger 'Long-Cycle, Distributed Situation Awareness and the Avoidance of Disasters' / Carys E. Siemieniuch and Murray A. Sinclair 'Applying Situation Awareness Theory to Observer/Trainers for the Joint Task Force' / Beth Blickensderfer, Charles E. Burgdorf and John Burns 'Collaboration Tools for the Army's Future Force' / Cheryl A. Bolstad and Mica R. Endsley 'Evaluation of Tunnel Concepts for Advanced Aviation Displays' / Lawrence J. Prinzel III, Lynda J. Kramer, Jarvis J. Arthur and Russell V. Parrish 'Design Concepts for Distributed Work Systems: One Brigade's Approach to Building Team Mental Models' / Jodi Heintz Obradovich and Philip J. Smith 'Increasing Situation Awareness of Dismounted Soldiers via Directional Cueing' / J. Christopher Brill, Richard D. Gilson, Mustapha Mouloua, Peter A. Hancock and Peter I. Terrence 'Assessing the Impact of a New Air Traffic Control Instruction on Flight Crew Activity' / Carine Hebraud, Nayen Pene, Laurence Rognin, Eric Hoffman and Karim Zeghal 'Accommodating NAS User Goals and Constraints: Choreographed Responses to Weather Events at Arrival Airports' / Philip J. Smith, Amy L. Spencer, Steve Caisse, Carla Beck, Tony Andre, Jimmy Krozel and Goli Davidson 'Evaluation of an Onboard Taxi Guidance System' / Join Jakobi, Bernd Lorenz and Marcus Biella 'Why System-Integration Training Matters in Network Centric Operations' / Brooke B. Schaab and J. Douglas Dressel 'Supporting Intelligence Analysis with Contextual Visualization' / Sarah Geitz 'Measuring Simulation Fidelity: A Conceptual Study' / Dahai Liu and Dennis Vincenzi 'Human Factors and Situational Awareness Issues in Fratricidal Air-to-Ground Attacks' / Malcolm James Cook, Helen S.E. Thompson, Corinne S.G. Adams, Carol S. Angus, Gwen Hughes and Derek Carson (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - situation awareness KW - human performance KW - human machine systems design KW - 2004 KW - Awareness KW - Human Factors Engineering KW - Human Machine Systems KW - Human Machine Systems Design KW - Performance KW - 2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-17247-002&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2004-17247-010 AN - 2004-17247-010 AU - Wilson, Glenn F. AU - Russell, Christopher A. AU - Dixon, Stephen R. AU - Wickens, Christopher D. AU - Miller, Christopher A. AU - Funk, Harry B. AU - Goldman, Robert P. AU - Wu, Peggy AU - Steinberg, Dick AU - Ruff, Heath A. AU - Calhoun, Gloria L. AU - Draper, Mark H. AU - Fontejon, John V. AU - Guilfoos, Brian J. ED - Vincenzi, Dennis A. ED - Mouloua, Mustapha ED - Hancock, Peter A. ED - Vincenzi, Dennis A., (Ed) ED - Mouloua, Mustapha, (Ed) ED - Hancock, Peter A., (Ed) T1 - Unmanned Aerial Vehicles and Intelligent Systems. T2 - Human performance, situation awareness and automation: Current research and trends, Vol 1&2 HPSAA II. Y1 - 2004/// SP - 199 EP - 222 CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-5341-3 N1 - Accession Number: 2004-17247-010. Partial author list: First Author & Affiliation: Wilson, Glenn F.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Release Date: 20050425. Correction Date: 20170126. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-8058-5341-3, Paperback. Language: English. Conference Information: Human Performance, Situation Awareness and Automation Conference (HPSAA II), 2nd, Mar, 2004, Daytona Beach, FL, US. Conference Note: Presented at the aforementioned conference. Major Descriptor: Aircraft; Artificial Intelligence; Automation; Human Machine Systems; Human Machine Systems Design. Minor Descriptor: Air Traffic Control; Psychophysiology. Classification: Intelligent Systems (4100); Human Factors Engineering (4010). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). Page Count: 24. AB - 'Psychophysiologically Determined Adaptive Aiding in a Simulated UCAV Task' / Glenn F. Wilson and Christopher A. Russell 'Automation Reliability in Unmanned Aerial Vehicle Flight Control' Stephen R. Dixon and Christopher D. Wickens 'A 'Playbook' for Variable Autonomy Control of Multiple, Heterogeneous Unmanned Air Vehicles' / Christopher A. Miller, Harry B. Funk, Robert P. Goldman and Peggy Wu 'Intelligent Agent Saves Lives' / Dick Steinberg 'Exploring Automation Issues in Supervisory Control of Multiple UAVs' / Heath A. Ruff, Gloria L. Calhoun, Mark H. Draper, John V. Fontejon and Brian J. Guilfoos (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - unmanned arial vehicles KW - intelligence systems KW - automation KW - flight control KW - psychophysiology KW - 2004 KW - Aircraft KW - Artificial Intelligence KW - Automation KW - Human Machine Systems KW - Human Machine Systems Design KW - Air Traffic Control KW - Psychophysiology KW - 2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-17247-010&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2004-17247-011 AN - 2004-17247-011 AU - Glinton, Robin AU - Giampapa, Joseph AU - Owens, Sean AU - Sycara, Katia AU - Grindle, Charles AU - Lewis, Michael AU - Guilliams, Nicole M. AU - McLaughlin, Annie B. AU - Vidulich, Michael A. AU - Nelson, W. Todd AU - Bolia, Robert S. AU - Donnelly, Brian P. AU - Smith, David G. AU - Wojciechowski, Josephine Q. AU - Myrick, Stephanie A. AU - Steed, Chad A. AU - Pfautz, Jonathan AU - Jones, Kenneth AU - Zacharias, Greg AU - Roth, Emilie AU - Hudlicka, Eva AU - Fichtl, Ted AU - Karabaich, Bryan AU - Schaab, Brooke AU - Dressel, J. Douglas AU - Koltko-Rivera, Mark E. AU - Smith, Kip ED - Vincenzi, Dennis A. ED - Mouloua, Mustapha ED - Hancock, Peter A. ED - Vincenzi, Dennis A., (Ed) ED - Mouloua, Mustapha, (Ed) ED - Hancock, Peter A., (Ed) T1 - Military applications. T2 - Human performance, situation awareness and automation: Current research and trends, Vol 1&2 HPSAA II. Y1 - 2004/// SP - 223 EP - 271 CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-5341-3 N1 - Accession Number: 2004-17247-011. Partial author list: First Author & Affiliation: Glinton, Robin; Carnegie Mellon University, Pittsburgh, PA, US. Release Date: 20050425. Correction Date: 20170126. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-8058-5341-3, Paperback. Language: English. Conference Information: Human Performance, Situation Awareness and Automation Conference (HPSAA II), 2nd, Mar, 2004, Daytona Beach, FL, US. Conference Note: Presented at the aforementioned conference. Major Descriptor: Artificial Intelligence; Automation; Human Factors Engineering; Human Machine Systems; Military Personnel. Minor Descriptor: Automated Speech Recognition; Personality; Robotics; Speech Perception; Technology; Weapons. Classification: Human Factors Engineering (4010); Military Psychology (3800). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). Page Count: 49. AB - 'Integrating Context for Information Fusion: Automating Intelligence Preparation of the Battlefield' / Robin Glinton, Joseph Giampapa, Sean Owens, Katia Sycara, Charles Grindle and Michael Lewis 'An Evaluation of Speech Recognition Technology in a Simulated Air Battle Management Task' / Nicole M. Guilliams, Annie B. McLaughlin, Michael A. Vidulich, W. Todd Nelson, Robert S. Bolia and Brian P. Donnelly 'A Qualitative Redefining of Military Utility in Terms of Human Factors' / David G. Smith 'A Human Performance Model of Driving Ground Vehicles' / Josephine Q. Wojciechowski '3-Dimensional Enhancements for Visualizing Lane Navigation and Performance' / Stephanie A. Myrick and Chad A. Steed 'Design and Evaluation of a Visualization Aid for Stability and Support Operation / Jonathan Pfautz, Kenneth Jones, Greg Zacharias, Emilie Roth, Eva Hudlicka, Ted Fichtl and Bryan Karabaich 'What Personality Characteristics Do Digitally Competent Soldiers Have in Common?' / Brooke Schaab and J. Douglas Dressel Personality Theory and Human Factors Research / Mark E. Koltko-Rivera 'Initial Experiments on Leader Presence and Communication Mode on Combat Performance' / Kip Smith (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - military applications KW - automated intelligence KW - speech recognition KW - human factors engineering KW - personality theory KW - personality characteristics KW - performance KW - robotics KW - 2004 KW - Artificial Intelligence KW - Automation KW - Human Factors Engineering KW - Human Machine Systems KW - Military Personnel KW - Automated Speech Recognition KW - Personality KW - Robotics KW - Speech Perception KW - Technology KW - Weapons KW - 2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-17247-011&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2004-17247-005 AN - 2004-17247-005 AU - Galster, Scott M. AU - Bolia, Robert S. AU - Nelson, W. Todd AU - Vidulich, Michael A. AU - Taylor, Robert M. AU - Clark, P. AU - Banbury, S. AU - Richards, D. AU - Dickson, B. AU - Li, Wen-Chin AU - Head, Tony AU - Wu, Fuh-Eau AU - Chen, Szu-Yi AU - Yu, Chung-San AU - Hope, Thomas AU - Marston, Richard ED - Vincenzi, Dennis A. ED - Mouloua, Mustapha ED - Hancock, Peter A. ED - Vincenzi, Dennis A., (Ed) ED - Mouloua, Mustapha, (Ed) ED - Hancock, Peter A., (Ed) T1 - Decision making. T2 - Human performance, situation awareness and automation: Current research and trends, Vol 1&2 HPSAA II. Y1 - 2004/// SP - 263 EP - 294 CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-5341-3 N1 - Accession Number: 2004-17247-005. Partial author list: First Author & Affiliation: Galster, Scott M.; Air Force Research Laboratory, US. Release Date: 20050425. Correction Date: 20170126. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-8058-5341-3, Paperback. Language: English. Conference Information: Human Performance, Situation Awareness and Automation Conference (HPSAA II), 2nd, Mar, 2004, Daytona Beach, FL, US. Conference Note: Presented at the aforementioned conference. Major Descriptor: Decision Making; Human Factors Engineering; Human Machine Systems; Human Machine Systems Design; Performance. Minor Descriptor: Aviation; Aviation Safety; Computer Simulation; Evaluation; Group Decision Making; Methodology; Military Personnel. Classification: Human Factors Engineering (4010); Military Psychology (3800). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). Page Count: 32. AB - 'Decision Quality and Mission Effectiveness in a Simulated Command & Control Environment' / Scott M. Galster and Robert S. Bolia 'From Chess to Chancellorsville: Measuring Decision Quality in Military Commanders' / Robert S. Bolia, W. Todd Nelson, Michael A. Vidulich and Robert M. Taylor 'Methodologies for Evaluating Decision Quality' / P. Clark, S. Banbury, D. Richards and B. Dickson 'Characterizing Decision Making in Network-Centric Command and Control Applications: Implications of Psychological Research' / W. Todd Nelson, Robert S. Bolia and Michael A. Vidulich 'The Investigation of Decision Errors in Aviation Mishaps by Applying the Human Factors Analysis and Classification System (HFACS) / Wen-Chin Li, Tony Head, Fuh-Eau Wu, Szu-Yi Chen and Chung-San Yu 'Decision Support for Decision Superiority: Control Strategies for Multiple UAVs' / Thomas Hope, Richard Marston and Dale Richards (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - decision making KW - human performance KW - military commanders KW - computer simulations KW - methodology KW - evaluation KW - command & control KW - human factors analysis KW - aviation KW - 2004 KW - Decision Making KW - Human Factors Engineering KW - Human Machine Systems KW - Human Machine Systems Design KW - Performance KW - Aviation KW - Aviation Safety KW - Computer Simulation KW - Evaluation KW - Group Decision Making KW - Methodology KW - Military Personnel KW - 2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-17247-005&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Amin, Moeness G. AU - Liang Zhao AU - Lindsey, Alan R. T1 - Subspace Array Processing for the Suppression of FM Jamming in GPS Receivers. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2004/01// VL - 40 IS - 1 M3 - Article SP - 80 EP - 92 SN - 00189251 AB - The mitigation of FM interference in GPS receivers is considered. In difference to commonly assumed wideband and narrowband interferers, the FM interferers are wideband, but instantaneously narrowband, and as such, have clear time-frequency (TF) signatures that are distinct from the GPS coarse acquisition (C/A) spread spectrum code. In the proposed technique, the estimate of the FM interference instantaneous frequency (IF) and the interference spatial signature are used to construct the spatio-temporal interference subspace. The if estimates can be provided using existing effective linear or bilinear TF methods. The undesired signal arrival is suppressed by projecting the input data on the interference orthogonal subspace. With a multisensor receiver, the distinctions in both the spatial and TF signatures of signal arrivals allow effective interference suppressions. The deterministic nature of the signal model is considered and the known underlying structure of the GPS C/A code is utalized. We derive the receiver signal-to-interference-plus-noise ratio (SINR) under exact and perturbed IF values. The effect of IF estimation errors on both pseudo-range measurements and navigation data recovery is analyzed. Simulation results comparing the receiver performances under if errors In single and multiantenna GPS receivers are provided. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARTIFICIAL satellites KW - GLOBAL Positioning System KW - ERRORS KW - SIGNAL processing KW - SENSOR networks KW - ELECTRIC interference N1 - Accession Number: 13262819; Amin, Moeness G. 1; Email Address: moeness@ece.vill.edu; Liang Zhao 2; Lindsey, Alan R. 3; Affiliations: 1: Villanova University.; 2: University of Southern California.; 3: Air Force Research Laboratory.; Issue Info: Jan2004, Vol. 40 Issue 1, p80; Thesaurus Term: ARTIFICIAL satellites; Subject Term: GLOBAL Positioning System; Subject Term: ERRORS; Subject Term: SIGNAL processing; Subject Term: SENSOR networks; Subject Term: ELECTRIC interference; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=13262819&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Roberts, Thomas M. T1 - Measured and Predicted Behavior of Pulses in Debye-and Lorentz-Type Materials. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2004/01// Y1 - 2004/01// VL - 52 IS - 1 M3 - Article SP - 310 EP - 314 SN - 0018926X AB - Published laboratory measurements are found to agree with two groups' completely independent asymptotics for the decay and spread of transient pulses in a Debye model, and the spread in a Lorentz model. The measured dc-content pulses decay with depth nearly as x-½ (water) and x-⅓ (concrete) in coaxial cables. The measured full-widths at half-maximum spread nearly as the reciprocal of the decay rates. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LABORATORIES KW - ELECTRIC cables KW - MICROWAVE transmission lines KW - ROPE KW - CABLES KW - RESEARCH N1 - Accession Number: 12874372; Source Information: Jan2004, Vol. 52 Issue 1, p310; Subject Term: LABORATORIES; Subject Term: ELECTRIC cables; Subject Term: MICROWAVE transmission lines; Subject Term: ROPE; Subject Term: CABLES; Subject Term: RESEARCH; Subject Term: ; Number of Pages: 5p; ; Document Type: Article; L3 - 10.1109/TAP.2003.822414 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12874372&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Shore, Robert A. AU - Yaghjian, Arthur D. T1 - A Comparison of High-Frequency Scattering Determined From PO Fields Enhanced With Alternative ILDCs. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation J1 - IEEE Transactions on Antennas & Propagation PY - 2004/01// Y1 - 2004/01// VL - 52 IS - 1 M3 - Article SP - 336 EP - 341 SN - 0018926X AB - In order to compare the accuracy of "source-based" and "diffraction-cone" incremental length diffraction coefficients (ILDCs), the high-frequency scattered far fields of a perfectly conducting circular disk are computed using physical optics (PO) enhanced with source-based and diffraction-cone ILDCs. For angles of incidence and scattering that are near grazing to the disk, the diffraction-cone ILDCs predict bistatic scattered far fields that are generally much greater than the exact far fields and that are much less accurate than the scattered far fields predicted by the source-based ILDCs. These results lead us to conclude that the source-based ILDCs are preferable for improving upon the accuracy of PO fields computed with general purpose computer codes. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS KW - OPTICS KW - LIGHT -- Wave-length KW - PHYSICAL optics KW - CONES KW - LIGHT N1 - Accession Number: 12874379; Source Information: Jan2004, Vol. 52 Issue 1, p336; Subject Term: PHYSICS; Subject Term: OPTICS; Subject Term: LIGHT -- Wave-length; Subject Term: PHYSICAL optics; Subject Term: CONES; Subject Term: LIGHT; Subject Term: ; Number of Pages: 6p; ; Document Type: Article; L3 - 10.1109/TAP.2003.822452 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12874379&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Lang Hong AU - Shan Cong, F. J. AU - Wicker, Devert T1 - Distributed Multirate Interacting Multiple Model Fusion (DMRIMMF) With Application to Out-of-Sequence GMTI Data. JO - IEEE Transactions on Automatic Control JF - IEEE Transactions on Automatic Control Y1 - 2004/01// VL - 49 IS - 1 M3 - Article SP - 102 EP - 107 SN - 00189286 AB - This note develops a distributed approach for fusing ground moving target indicator data with out-of-sequence (OOS) measurements. A multirate interacting multiple model (MRIMM) fusion algorithm is developed for effectively fusing multirate information. The multirate approach provides an excellent framework for efficient information reproduction and forward update. A multirate interacting multiple model filter is employed locally to track a target with or without maneuvering behavior. The combination of global MRIMM fusion and local MRIMM tracking proves to be powerful for tracking and fusing maneuvering and nonmaneuvering targets in an environment of OOS measurement reporting. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Automatic Control is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - MATHEMATICS KW - ALGEBRA KW - BEHAVIOR KW - STRUCTURAL frames KW - STRUCTURAL design KW - Multirate processing KW - out-of-sequence (OOS) measurements KW - target tracking KW - track fusion. N1 - Accession Number: 12224043; Lang Hong 1; Email Address: lhong@cs.wright.edu; Shan Cong, F. J. 1; Wicker, Devert 2; Affiliations: 1: Department of Electrical Engineering, Wright State University, Dayton, OH 45435 USA.; 2: Target Recognition Branch, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433 USA.; Issue Info: Jan2004, Vol. 49 Issue 1, p102; Thesaurus Term: ALGORITHMS; Thesaurus Term: MATHEMATICS; Subject Term: ALGEBRA; Subject Term: BEHAVIOR; Subject Term: STRUCTURAL frames; Subject Term: STRUCTURAL design; Author-Supplied Keyword: Multirate processing; Author-Supplied Keyword: out-of-sequence (OOS) measurements; Author-Supplied Keyword: target tracking; Author-Supplied Keyword: track fusion.; NAICS/Industry Codes: 238350 Finish Carpentry Contractors; NAICS/Industry Codes: 238130 Framing Contractors; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TAC.2003.821410 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12224043&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Psaromiligkos, Toannis N. AU - Batalama, Stella N. T1 - Recursive Short-Data-Record Estimation of AV and MMSE/MVDR Linear Filters for DS-CDMA Antenna Array Systems. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2004/01// VL - 52 IS - 1 M3 - Article SP - 136 EP - 148 SN - 00906778 AB - The presence of the desired signal during estimation of the minimum mean-square error (MMSE)/minimum-Variance distortionless response (MVDR) and auxiliary-vector (AV) filters under limited data support leads to significant signal-to-interference-plus-noise ratio (SINR) performance degradation. We quantify this observation in the context of direct-sequence code-division multiple-access (DS-CDMA) communications by deriving close approximations for the mean-square filter estimation error, the probability density function of the output SINR, and the probability density function of the symbol-error rate (SER) of the sample matrix inversion (SMI) receiver evaluated using both a desired-signal- "present" and desired-signal-"absent" input covariance matrix. To avoid such performance degradation, we propose a DS-CDMA receiver that utilizes a simple pilot-assisted algorithm that estimates and then subtracts the desired signal component from the received signal prior to filter estimation. Then, to accommodate decision-directed operation, we develop two recursive algorithms for the on-line estimation of the AV and MMSE/MVDR filter and we study their convergence properties. Finally, simulation studies illustrate the SER performance of the overall receiver structures. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Code division multiple access KW - Adaptive filters KW - Approximation theory KW - Estimation theory KW - Algorithms KW - Simulation methods & models KW - Antenna arrays KW - Adaptive filters KW - code-division multiple access (CDMA) KW - multiple-access interference (MAI) suppression KW - recursive estimation KW - signal-present/signal-absent filter estimation KW - space-time (ST) processing KW - stochastic approximation. N1 - Accession Number: 12364661; Psaromiligkos, Toannis N. 1; Email Address: yannis@ece.mcgill.ca; Batalama, Stella N. 2; Email Address: batalama@eng.buffitlo.edu; Affiliations: 1: Department of Electrical and Computer Engineering. McGill University. Montréal. QC H3H 2N4 Canada.; 2: U.S. Air Force Research Laboratory (AFRL), Rome. NY.; Issue Info: Jan2004, Vol. 52 Issue 1, p136; Thesaurus Term: Code division multiple access; Subject Term: Adaptive filters; Subject Term: Approximation theory; Subject Term: Estimation theory; Subject Term: Algorithms; Subject Term: Simulation methods & models; Subject Term: Antenna arrays; Author-Supplied Keyword: Adaptive filters; Author-Supplied Keyword: code-division multiple access (CDMA); Author-Supplied Keyword: multiple-access interference (MAI) suppression; Author-Supplied Keyword: recursive estimation; Author-Supplied Keyword: signal-present/signal-absent filter estimation; Author-Supplied Keyword: space-time (ST) processing; Author-Supplied Keyword: stochastic approximation.; Language of Keywords: German; Number of Pages: 13p; Document Type: Article L3 - 10.1109/TCOMM.2003.822186 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=12364661&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR AU - Huang, Chung-Chi AU - Tsang, Leung AU - Chan, Chi Hou AU - Ding, Kung-Hau T1 - Multiple Scattering Among Vias in Planar Waveguides Using Preconditioned SMCG Method. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques J1 - IEEE Transactions on Microwave Theory & Techniques PY - 2004/01//Jan2004 Part 1 of 2 Y1 - 2004/01//Jan2004 Part 1 of 2 VL - 52 IS - 1 M3 - Article SP - 20 EP - 28 SN - 00189480 AB - Reports on the formulation of full-wave modeling for cylindrical vias in planar waveguides using Foldy-Lax multiple scattering equations. Proposed sparse-matrix canonical-grid method based on fast Fourier transform and an iterative algorithm to solve a large-scale via problem; Improvement of computational efficiency by a preconditioning scheme based on the dominant information contained in the near field. KW - WAVEGUIDES KW - SCATTERING (Mathematics) KW - FOURIER transforms KW - ALGORITHMS KW - LARGE scale integration of circuits KW - INTEGRATED circuits N1 - Accession Number: 12354011; Source Information: Jan2004 Part 1 of 2, Vol. 52 Issue 1, p20; Subject Term: WAVEGUIDES; Subject Term: SCATTERING (Mathematics); Subject Term: FOURIER transforms; Subject Term: ALGORITHMS; Subject Term: LARGE scale integration of circuits; Subject Term: INTEGRATED circuits; Subject Term: ; Number of Pages: 9p; ; Illustrations: 4 Black and White Photographs, 1 Diagram, 1 Chart, 15 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12354011&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Armacost, Andrew P. AU - Barnhart, Cynthia AU - Ware, Keith A. AU - Wilson, Alysia M. T1 - UPS Optimizes Its Air Network. JO - Interfaces JF - Interfaces Y1 - 2004/01//Jan/Feb2004 VL - 34 IS - 1 M3 - Article SP - 15 EP - 25 PB - INFORMS: Institute for Operations Research SN - 00922102 AB - Operations research specialists at UPS and the Massachusetts Institute of Technology (MIT) created a system to optimize the design of service networks for delivering express packages. The system simultaneously determines aircraft routes, fleet assignments, and package routings to ensure overnight delivery at minimal cost. It has become central to the UPS planning process, fundamentally transforming the process and the underlying planning assumptions. Planners now use the system's solutions and insights to improve plans. UPS management credits the system with identifying operational changes that have saved over $87 million between 2000 and 2002. Anticipated future savings are expected to be in the hundreds of millions of dollars. [ABSTRACT FROM AUTHOR] AB - Copyright of Interfaces is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DELIVERY of goods KW - OPERATIONS research KW - FREIGHT & freightage KW - BUSINESS logistics KW - POSTAL service KW - industries: transportation, shipping KW - transportation: models, network KW - UNITED Parcel Service Inc. N1 - Accession Number: 12842388; Armacost, Andrew P. 1; Email Address: armacost@alum.mit.edu; Barnhart, Cynthia 2; Email Address: cbarnhar@mit.edu; Ware, Keith A. 3; Email Address: air2kaw@ups.com; Wilson, Alysia M. 3; Email Address: air2amm@ups.com; Affiliations: 1: Department of Management, US Air Force Academy, 2354 Fairchild Drive, Suite 6J100, Colorado Springs, Colorado 80920; 2: Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Room 1-229, Cambridge, Massachusetts 02139; 3: UPS Operations Research Group, 1400 Hurstbourne Parkway, Louisville, Kentucky 40223; Issue Info: Jan/Feb2004, Vol. 34 Issue 1, p15; Thesaurus Term: DELIVERY of goods; Thesaurus Term: OPERATIONS research; Thesaurus Term: FREIGHT & freightage; Thesaurus Term: BUSINESS logistics; Thesaurus Term: POSTAL service; Author-Supplied Keyword: industries: transportation, shipping; Author-Supplied Keyword: transportation: models, network ; Company/Entity: UNITED Parcel Service Inc. DUNS Number: 081085305 Ticker: UPS; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; NAICS/Industry Codes: 488510 Freight Transportation Arrangement; NAICS/Industry Codes: 484220 Specialized Freight (except Used Goods) Trucking, Local; NAICS/Industry Codes: 488519 Other freight transportation arrangement; NAICS/Industry Codes: 491110 Postal Service; NAICS/Industry Codes: 561431 Private Mail Centers; Number of Pages: 11p; Illustrations: 6 Diagrams, 2 Charts; Document Type: Article L3 - 10.1287/inte.1030.0060 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12842388&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - RPRT AU - Rizzetta, Donald P. AU - Visbal, Miguel R. T1 - Large-eddy Simulation of Supersonic Boundary-layer Flow by a High-order Method. JO - International Journal of Computational Fluid Dynamics JF - International Journal of Computational Fluid Dynamics Y1 - 2004/01// VL - 18 IS - 1 M3 - Report SP - 15 EP - 27 SN - 10618562 AB - Reports on the high-order numerical method for large-eddy simulations of supersonic flowfields. Incorporation of two different subgrid models in the simulations to account for the spatially under-resolved stresses and heat flux; Consideration of both the Smagorinsky and dynamic subgrid stress formulations in the simulation along with a computation which employed no model; Agreement between experimental data and previous computations. KW - Simulation methods & models KW - Supersonic aerodynamics KW - Hydraulic models KW - Engineering models KW - Compact finite-difference scheme; KW - Dynamic subgrid-stress model; KW - Flat-plate boundary-layer flow KW - High-order numerical method; KW - Large-eddy simulation; N1 - Accession Number: 12416111; Rizzetta, Donald P. 1; Visbal, Miguel R. 2; Affiliations: 1: Air Force Research Laboratory, AFRL/VAAC Bldg. 146, 2210 Eighth St., Wright-Patterson AFB, OH 45433-7512, USA.; 2: Air Force Laboratory, AFRL/VAAC Bldg. 146, 2210 Eighth St., Wright-Patterson AFB, OH 45433-7512, USA.; Issue Info: Jan2004, Vol. 18 Issue 1, p15; Thesaurus Term: Simulation methods & models; Subject Term: Supersonic aerodynamics; Subject Term: Hydraulic models; Subject Term: Engineering models; Author-Supplied Keyword: Compact finite-difference scheme;; Author-Supplied Keyword: Dynamic subgrid-stress model;; Author-Supplied Keyword: Flat-plate boundary-layer flow; Author-Supplied Keyword: High-order numerical method;; Author-Supplied Keyword: Large-eddy simulation;; Number of Pages: 13p; Illustrations: 2 Charts, 15 Graphs; Document Type: Report UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12416111&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Ballal, Dilip R. AU - Zelina, Joseph T1 - Progress in Aeroengine Technology (1939-2003). JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2004/01//Jan/Feb2004 Y1 - 2004/01//Jan/Feb2004 VL - 41 IS - 1 M3 - Article SP - 43 EP - 50 SN - 00218669 AB - Second only to the invention of an airplane by the Wright Brothers 100 years ago, the jet engine has revolutionized both military and civil aviation. We present a survey of the key aeroengine technology trends. Since 1939, engine thrust has increased over 100-fold and the (thrust/weight) ratio to 7. Whereas the early jet engines barely lasted for less than 10 hours, today's civil engines can stay on wings for up to 10,000 hours, and high-performance military engines can last several hundred hours. Advances in blade cooling technologies and high-temperature materials have permitted an increase in turbine inlet temperature from 1280 to 3200°F. Today, engine thermal efficiency is approaching 50%. Also, today's most powerful aeroengines already meet the International Civil Aviation Organization ultra-low gaseous and smoke requirements. Finally, civil and military technology is moving along the direction set by the versatile affordable advanced turbine engines (VAATE) propulsion capability goals. The spectacular achievements of the last century truly provide an outstanding start for many future achievements to come in the field of aeroengine technology, along the lines of the VAATE goals. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TECHNOLOGY KW - JET engines KW - COMMERCIAL aeronautics KW - MILITARY aeronautics KW - WRIGHT, Orville, 1871-1948 KW - WRIGHT, Wilbur, 1867-1912 N1 - Accession Number: 12783455; Source Information: Jan/Feb2004, Vol. 41 Issue 1, p43; Subject Term: TECHNOLOGY; Subject Term: JET engines; Subject Term: COMMERCIAL aeronautics; Subject Term: MILITARY aeronautics; Subject Term: WRIGHT, Orville, 1871-1948; Subject Term: WRIGHT, Wilbur, 1867-1912; Subject Term: ; Number of Pages: 8p; ; Illustrations: 16 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12783455&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Biber, Kasim AU - Tilmann, Carl P. T1 - Supercritical Airfoil Design for Future High-Altitude Long-Endurance Concepts. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2004/01//Jan/Feb2004 Y1 - 2004/01//Jan/Feb2004 VL - 41 IS - 1 M3 - Article SP - 156 EP - 164 SN - 00218669 AB - The design and analysis is presented of a new laminar flow airfoil for a future high-altitude long-endurance aircraft that has an operational condition at supercritical speeds. The XFOIL and MSES computational codes were used to design, modify, and analyze the airfoil. The airfoil has enough thickness and performance to meet the requirements set for one of the U.S. Air Force Research Laboratory's SensorCraft concepts: a joined-wing configuration with a diamond shape in planform and front views. This SensorCraft concept's geometry and operational altitudes and speeds were used to determine the airfoil design conditions. The airfoil has a drag bucket over a large range of lift coefficients. Boundary-layer transition location is at about 60% chord upper surface and 70% chord lower surface and is characterized by a laminar separation bubble, which decreases in size with increasing angle of attack. Sensitivity studies were carried out to investigate the effects of Reynolds number and Mach number, along with boundary-layer transition parameters. Further experimental work needs to be performed to validate the design. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROFOILS KW - DESIGN KW - AERONAUTICS KW - UNITED States. Air Force KW - UNITED States N1 - Accession Number: 12783468; Source Information: Jan/Feb2004, Vol. 41 Issue 1, p156; Subject Term: AEROFOILS; Subject Term: DESIGN; Subject Term: AERONAUTICS; Subject Term: UNITED States. Air Force; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 9p; ; Illustrations: 2 Diagrams, 1 Chart, 20 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12783468&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Hannah, Gregg AU - Cook, James T1 - Book Reviews. JO - Journal of Military Ethics JF - Journal of Military Ethics J1 - Journal of Military Ethics PY - 2004/01// Y1 - 2004/01// VL - 3 IS - 1 M3 - Book Review SP - 75 EP - 78 PB - Routledge SN - 15027570 AB - Reviews the book "The Bridge at No Gun Ri: A Hidden Nightmare from the Korean War," by Charles J. Hanley, Sang Hun Choe and Martha Mendoza. KW - BRIDGE at No Gun Ri: A Hidden Nightmare From the Korean War, The (Book) KW - MENDOZA, Martha KW - CHOE, Sang-Hun KW - WAR KW - NONFICTION N1 - Accession Number: 12633600; Source Information: Jan2004, Vol. 3 Issue 1, p75; Subject Term: BRIDGE at No Gun Ri: A Hidden Nightmare From the Korean War, The (Book); Subject Term: MENDOZA, Martha; Subject Term: CHOE, Sang-Hun; Subject Term: WAR; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 4p; ; Document Type: Book Review; L3 - 10.1080/15027570310004942 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12633600&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Within-ear and across-ear interference in a dichotic cocktail party listening task: Effects of masker uncertainty. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2004/01// VL - 115 IS - 1 M3 - Article SP - 301 EP - 310 SN - 00014966 AB - Increases in masker variability have been shown to increase the effects of informational masking in non-speech listening tasks, but relatively little is known about the influence that masker uncertainty has on the informational components of speech-on-speech masking. In this experiment, listeners were asked to extract information from a target phrase that was presented in their right ear while ignoring masking phrases that were presented in the same ear as the target phrase and in the ear opposite the target phrase. The level of masker uncertainty was varied by holding constant or ''freezing'' the talkers speaking the masking phrases, the semantic content used in the masking phrases, or both the talkers and the semantic content in the masking phrases within each block of 120 trials. The results showed that freezing the semantic content of the masking phrase in the target ear was the only reduction in masker uncertainty that ever resulted in a significant improvement in performance. Providing feedback after each trial improved performance overall, but did not prevent the listeners from making incorrect responses that matched the content of the frozen target-ear masking phrase. However, removing the target-ear contents corresponding to the masking phrase from the response set resulted in a dramatic improvement in performance. This suggests that the listeners were generally able to understand both of the phrases presented to the target ear, and that their incorrect responses in the task were almost entirely a result of their inability to determine which words were spoken by the target talker. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEARING KW - LISTENING KW - EAR KW - SOUND KW - ACOUSTICAL engineering KW - INTERFERENCE (Sound) KW - INTERFERENCE (Perception) N1 - Accession Number: 20589717; Brungart, Douglas S. 1; Simpson, Brian D. 1; Affiliations: 1 : Air Force Research Laboratory, 2610 Seventh Street, Wright-Patterson AFB, Ohio 45433-7901; Source Info: Jan2004, Vol. 115 Issue 1, p301; Subject Term: HEARING; Subject Term: LISTENING; Subject Term: EAR; Subject Term: SOUND; Subject Term: ACOUSTICAL engineering; Subject Term: INTERFERENCE (Sound); Subject Term: INTERFERENCE (Perception); Number of Pages: 10p; Illustrations: 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1121/1.1628683# UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=20589717&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - CHAP ID - 2005-03974-001 AN - 2005-03974-001 AU - Dominguez, Cynthia O. AU - Flach, John M. AU - McDermott, Patricia L. AU - McKellar, Daniel M. AU - Dunn, Margaret ED - Smith, Kip ED - Shanteau, James ED - Johnson, Paul ED - Smith, Kip, (Ed) ED - Shanteau, James, (Ed) ED - Johnson, Paul, (Ed) T1 - The Conversion Decision in Laparoscopic Surgery: Knowing Your Limits and Limiting Your Risks. T2 - Psychological investigations of competence in decision making. T3 - Cambridge series on jugment and decision making Y1 - 2004/// SP - 7 EP - 39 CY - New York, NY, US PB - Cambridge University Press SN - 0-521-58306-3 N1 - Accession Number: 2005-03974-001. Partial author list: First Author & Affiliation: Dominguez, Cynthia O.; Air Force Research Laboratory, Wright Patterson Air Force Base, OH, US. Release Date: 20060605. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-521-58306-3, Hardcover. Language: English. Major Descriptor: Decision Making; Medical Education; Metacognition; Professional Competence; Surgery. Classification: Professional Education & Training (3410); Medical Treatment of Physical Illness (3363). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). Methodology: Empirical Study; Qualitative Study. References Available: Y. Page Count: 33. AB - In this research, we used an exploratory approach to look at expertise in a commonly performed minimally invasive surgical procedure, laparoscopic cholecystectomy. Goals of this research were (1) to understand the decision to open during laparoscopic surgery and ultimately to develop a training intervention based on that understanding; (2) to understand perceptual expertise, including resident-staff differences and how both groups stay within the boundaries of safe performance; and (3) to understand how metacognition interacts with expertise in this context. In this chapter, we will first discuss laparoscopic surgery in general, in the context of a particular challenging case, and in terms of analogous concepts that help us see relationships between surgery and other domains involving similar risks and complexities. Next, we will explain methods used in this research and findings related to metacognition. Finally, we will review other current writings and research pertaining to metacognition and suggest a new conceptualization that incorporates the findings of this research. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - laparoscopic surgery KW - surgical practice KW - surgical procedures KW - conversion decision KW - cholecystectomy KW - training intervention KW - metacognition KW - 2004 KW - Decision Making KW - Medical Education KW - Metacognition KW - Professional Competence KW - Surgery KW - 2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-03974-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR T1 - Rider-bicycle interaction dynamics in mountain biking. (Abstract) AU - Redfield, R.C. JO - Sports Engineering (International Sports Engineering Association) JF - Sports Engineering (International Sports Engineering Association) Y1 - 2004/// VL - 7 IS - 4 SP - 185 EP - 185 CY - ; SN - 13697072 N1 - Accession Number: SPHS-1024246; Author: Redfield, R.C.: 1 ; Author Affiliation: 1 Department of Engineering Mechanics, United States Air Force Academy, Colorado Springs, CO, USA; Conference: International Conference on the Engineering of Sport (5th : 2004 : Davis, California, USA).; No. of Pages: 1; Language: English; Parent Item: SPHP62570; General Notes: Volume 1: Dynamics.; Publication Type: Article; Material Type: PRINT; Update Code: 20070101; SIRC Article No.: S-1024246 KW - *BIOMECHANICS KW - *ALL terrain cycling KW - *BICYCLES KW - *POSTURE KW - *GROUND reaction force (Biomechanics) KW - *ACHIEVEMENT KW - *CENTER of mass KW - CALIBRATION KW - ABILITY KW - MOUNTAIN BIKING KW - BODY POSITION KW - CENTRE OF GRAVITY KW - TECHNIQUE L2 - http://articles.sirc.ca/search.cfm?id=S-1024246 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=SPHS-1024246&site=ehost-live&scope=site UR - http://articles.sirc.ca/search.cfm?id=S-1024246 UR - http://www.sports-engineering.co.uk DP - EBSCOhost DB - s3h ER - TY - JOUR T1 - Head accelerations during impact events. (Abstract) AU - Self, B.P. AU - Karins, C. AU - Knox, T. JO - Sports Engineering (International Sports Engineering Association) JF - Sports Engineering (International Sports Engineering Association) Y1 - 2004/// VL - 7 IS - 4 SP - 199 EP - 200 CY - ; SN - 13697072 N1 - Accession Number: SPHS-1024326; Author: Self, B.P.: 1 Author: Karins, C.: 2 Author: Knox, T.: 3 ; Author Affiliation: 1 Department of Engineering Mechanics, United States Air Force Academy, Colorado Springs, CO, USA: 2 Department of Engineering Mechanics, United States Air Force Academy, Colorado Springs, CO, USA: 3 Human Effectiveness Directorate, Wright-Patterson Air Force Base, Ohio, USA; Conference: International Conference on the Engineering of Sport (5th : 2004 : Davis, California, USA).; No. of Pages: 2; Language: English; Parent Item: SPHP62570; General Notes: Volume 2: Impact.; Publication Type: Article; Material Type: PRINT; Update Code: 20070101; SIRC Article No.: S-1024326 KW - *HEAD KW - *WOUNDS & injuries KW - *SPEED KW - *AUTOMOBILE racing KW - *BOXING KW - TESTING KW - RISK L2 - http://articles.sirc.ca/search.cfm?id=S-1024326 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=SPHS-1024326&site=ehost-live&scope=site UR - http://articles.sirc.ca/search.cfm?id=S-1024326 UR - http://www.sports-engineering.co.uk DP - EBSCOhost DB - s3h ER - TY - CHAP ID - 2004-18818-008 AN - 2004-18818-008 AU - Pringle, Heather L. AU - Kramer, Arthur F. AU - Irwin, David E. ED - Levin, Daniel T. ED - Levin, Daniel T., (Ed) T1 - Individual Differences in the Visual Representation of Scenes. T2 - Thinking and seeing: Visual metacognition in adults and children. Y1 - 2004/// SP - 165 EP - 185 CY - Cambridge, MA, US PB - MIT Press SN - 0-262-12262-6 SN - 0-262-62181-9 N1 - Accession Number: 2004-18818-008. Partial author list: First Author & Affiliation: Pringle, Heather L.; United States Air Force Academy, CO, US. Release Date: 20050307. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-262-12262-6, Hardcover; 0-262-62181-9, Paperback. Language: English. Major Descriptor: Attention; Eye Movements; Individual Differences; Vision; Visual Memory. Classification: Visual Perception (2323). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 21. AB - In our study, observers detected and identified changes in a 'flicker' paradigm (Rensink O'Regan, and Clark, 1997), where observers are presented with two different views of a scene separated by a briefly presented gray screen (to mask any apparent motion caused by a change). A change in a specific object is made from one version of the scene to the next; observers are specifically instructed to detect and identify the change as quickly and accurately as possible. We employed high-resolution driving scenes, photographed from the driver's perspective out the front windshield. Scene changes included objects that had been previously rated (by independent judges) as having high or low salience and high or low meaning in the driving context (see Pringle et al., 2001). Specific changes included deleting or adding objects and changing their color or location. We examined the hypothesis that change detection performance is related to performance on visuospatial working memory tasks and on a test of attentional breadth. Given previous demonstrations (e.g., Salthouse, 1992) of the importance of perceptual speed in a variety of complex tasks, we predicted that performance on tests which entailed perceptual speed would account for a portion of the variance in change detection. And given the importance of systematic search strategies that are at least somewhat immune to disruption by salient stimuli, we also predicted that measures of inhibition would account for a portion of the variance in change detection. We examined, as well, the secondary hypothesis that visuospatial working memory and attentional breadth performance is related to eye movement behavior during change detection. That is, we expected that observers with larger attentional spans and visuospatial working memories would require fewer eye movements to detect and identify changes in the driving scenes. To augment the more explicit measure of change detection provided by observers' verbalization of the changed object, we recorded saccades as an implicit measure of attention strategies and change detection. Because previous studies have found that, under some conditions, eye movements reflect scene changes even in the absence of observer verbalization of changes (Ryan et al., 2000), one might expect eye movement measures might prove more sensitive to change detection than other measures that depend on explicit recognition of the change. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - individual differences KW - visual representation KW - change detection KW - eye movement KW - attention KW - memory KW - 2004 KW - Attention KW - Eye Movements KW - Individual Differences KW - Vision KW - Visual Memory KW - 2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-18818-008&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2004-11144-005 AN - 2004-11144-005 AU - Mastroianni, George R. T1 - Letter to the Editor. JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2004/// VL - 16 IS - 1 SP - 71 EP - 74 CY - US PB - Lawrence Erlbaum SN - 0899-5605 SN - 1532-7876 N1 - Accession Number: 2004-11144-005. Partial author list: First Author & Affiliation: Mastroianni, George R.; Institutional Review Board, US Air Force Academy, US. Other Publishers: Educational Publishing Foundation; Taylor & Francis. Release Date: 20040315. Correction Date: 20140818. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Letter. Language: English. Major Descriptor: Experimental Ethics; Experimentation; Informed Consent; Military Psychology. Classification: Research Methods & Experimental Design (2260). Population: Human (10). References Available: Y. Page Count: 4. Issue Publication Date: 2004. AB - Expresses concern about a previously published article in Military Psychology. The author contends that there is no indication in the report that informed consent was sought from the participants, and he is disturbed that military students, a 'doubly vulnerable' population, were the subjects of this study. Further, he argues that the experimental procedures themselves appear to have been quite dangerous. The author suggests that conducting the study not only exposed the participants to the direct negative effects of the experiment itself, but also may have convinced them that the experimenter's approach was an acceptable and ethical way to conduct research. In addition, he complains that by publishing this study with no accompanying statement about the ethics of the research, the journal has given its tacit approval of the design and the (lack of) safeguards and participant protections employed. He suggests that we must often be extremely creative to accomplish our scientific goals without compromising the rights of participants in our studies. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - experimental procedures KW - military research KW - informed consent KW - research ethics KW - 2004 KW - Experimental Ethics KW - Experimentation KW - Informed Consent KW - Military Psychology KW - 2004 DO - 10.1207/s15327876mp1601_5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-11144-005&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2004-17307-002 AN - 2004-17307-002 AU - Caldwell, John A. Jr. AU - Caldwell, J. Lynn AU - Brown, David L. AU - Smith, Jennifer K. T1 - The Effects of 37 Hours of Continuous Wakefulness On the Physiological Arousal, Cognitive Performance, Self-Reported Mood, and Simulator Flight Performance of F-117A Pilots. JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2004/// VL - 16 IS - 3 SP - 163 EP - 181 CY - US PB - Lawrence Erlbaum SN - 0899-5605 SN - 1532-7876 AD - Caldwell, John A. Jr., Air Force Research Laboartory, AFRL/HEPM, 2485 Gillingham Dr., Suite 2, Brooks City-Base, TX, US, 78255-5105 N1 - Accession Number: 2004-17307-002. Partial author list: First Author & Affiliation: Caldwell, John A. Jr.; U.S. Air Force Research Laboratory, Brooks City-Base, TX, US. Other Publishers: Educational Publishing Foundation; Taylor & Francis. Release Date: 20040816. Correction Date: 20140818. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Cognitive Ability; Emotional States; Physiological Arousal; Wakefulness. Minor Descriptor: Air Force Personnel; Fatigue; Flight Simulation; Motor Performance; Sleep Deprivation. Classification: Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Multi-Attribute Test Battery; Fitness Impairment Tester; Profile of Mood States. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 19. Issue Publication Date: 2004. AB - Pilot fatigue poses a serious threat to operational safety, but understanding the nature of the problem and the times at which pilots are most at risk will facilitate operationally relevant fatigue-management strategies. This investigation sought to address these issues in a controlled investigation of the impact of sustained wakefulness on Air Force aviators. Ten current and qualified F-117 pilots completed the Multi-Attribute Task Battery (MATE), the Profile of Mood States (POMS), a resting eyes open and eyes-closed EEG, and a standardized flight evaluation in an F-117 flight simulator at 5-hr intervals during the final 23 hours of a 37-hr period of continuous wakefulness. Results indicated significant decrements in mood, cognition, central nervous system activation, and flight skills began to occur in the predawn hours during a night without sleep. However, the most serious operationally relevant decrements appeared at approximately 0700 (after 25 hours without sleep) and persisted throughout the remainder of the deprivation period. The decrements suggested in the real world crew coordination likely will decline, information processing will become impaired, and a wide array of basic capabilities will be degraded as a result of compromised vigilance, poor situational awareness, and sluggish reaction time. Even the well-practiced flight skills of experienced pilots are clearly susceptible to the insidious effects of sleep loss. These quantified effects of untreated sleep deprivation will provide a baseline against which promising fatigue countermeasures can be assessed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cognitive performance KW - self reported mood KW - simulator flight performance KW - pilot fatigue KW - Air Force aviators KW - flight skills KW - continuous wakefulness KW - physiological arousal KW - 2004 KW - Aircraft Pilots KW - Cognitive Ability KW - Emotional States KW - Physiological Arousal KW - Wakefulness KW - Air Force Personnel KW - Fatigue KW - Flight Simulation KW - Motor Performance KW - Sleep Deprivation KW - 2004 DO - 10.1207/s15327876mp1603_2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-17307-002&site=ehost-live&scope=site UR - john.caldwell@brooks.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-02798-003 AN - 2005-02798-003 AU - Bolia, Robert S. AU - Nelson, W. Todd AU - Vidulich, Michael A. T1 - A multi-layer visual display for air battle managers: Effects of depth and transparency on performance and workload in a dual-task scenario. T3 - Selected Papers from the International Aviation Psychology Symposium, Sydney 2003 JF - Human Factors and Aerospace Safety JO - Human Factors and Aerospace Safety Y1 - 2004/// VL - 4 IS - 3 SP - 181 EP - 193 CY - United Kingdom PB - Ashgate Publishing SN - 1468-9456 AD - Bolia, Robert S., Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US N1 - Accession Number: 2005-02798-003. Partial author list: First Author & Affiliation: Bolia, Robert S.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Release Date: 20050531. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Depth Perception; Job Performance; Visual Displays; Work Load. Classification: Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 13. Issue Publication Date: 2004. AB - Air Battle Managers (ABMs) in the United States Air Force are responsible for directing the implementation of a dynamic air tasking order (ATO) and controlling the execution of air-to-air and air-to-ground operations specified by that ATO. In order to do so, they must typically monitor a situation display (SD) comprising a map overlaid with landmarks, geographical features, and moving tracks representing the air and ground assets of coalition and enemy forces, as well as tracks for which positive identification is lacking. In addition to this surveillance component, they are required to perform a number of other tasks, such as associating coalition assets with targets, coordinating air-to-air refuelling, and responding to warnings. These tasks all require a portion of the visual display that is occupied by the SD, and typically occlude the SD, leading presumably to decreased performance on one of the two concurrent tasks. The purpose of the present investigation was to determine whether the use of a multi-layer display, on which visual information is presented at two different depths, with varying degrees of transparency, would reduce the performance decrement associated with concurrent task performance by eliminating the effects of occlusion. A multi-element tracking task was employed as an analogy to the SD, while a cognitive vigilance task was used to represent the additional visual task. Analyses suggest that transparency alone plays a role in reducing the deficits introduced by occlusion, and also reduces perceived mental workload. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - multi-layer visual display KW - air battle managers KW - visual depth KW - transparency KW - workload KW - dual-task scenario KW - air tasking order KW - job performance KW - 2004 KW - Air Force Personnel KW - Depth Perception KW - Job Performance KW - Visual Displays KW - Work Load KW - 2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-02798-003&site=ehost-live&scope=site UR - Robert.Bolia@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-02798-004 AN - 2005-02798-004 AU - Nelson, W. Todd AU - Vidulich, Michael A. AU - Bolia, Robert S. T1 - Designing speech interfaces for command and control applications. T3 - Selected Papers from the International Aviation Psychology Symposium, Sydney 2003 JF - Human Factors and Aerospace Safety JO - Human Factors and Aerospace Safety Y1 - 2004/// VL - 4 IS - 3 SP - 195 EP - 207 CY - United Kingdom PB - Ashgate Publishing SN - 1468-9456 AD - Nelson, W. Todd, Air Force Research Laboratory (AFRL/HECP), 2255 H Street, Wright-Patterson Air Force Base, OH, US, 45433-7022 N1 - Accession Number: 2005-02798-004. Partial author list: First Author & Affiliation: Nelson, W. Todd; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Release Date: 20050531. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Automated Speech Recognition; Computer Applications; Human Computer Interaction; Military Psychology. Classification: Intelligent Systems (4100); Military Psychology (3800). Population: Human (10); Male (30). Location: US. Age Group: Adulthood (18 yrs & older) (300); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 13. Issue Publication Date: 2004. AB - A user-centred approach was employed to guide the design and development of a speech-based interface to control a subset of workstation functions in a simulated Airborne Warning and Control System (AWACS) task environment. Speech interface concepts, and their associated vocabularies, were identified for a set of tasks common to Air Battle Managers (ABMs) and were integrated into a commercially-available situation display installed on a laptop PC. This system constituted the Laptop Speech Interface Demonstrator (LSID), which was used to demonstrate speech interface concepts with ABMs from the United States and Royal Australian Air Forces, and United States Navy. The LSID was also used in a series of user testing sessions in which manual and speech input modes were compared for a series of tasks required of ABMs, including modification of the situation display, customization of the Air Tasking Order (ATO), and management of radar tracks. Results from the user tests and demonstrator walkthroughs were then used to further refine speech interface concepts that were evaluated as part of a simulated AW ACS mission. Toward this end, trained Air Weapons Officers (AWOs) from the USAF participated in a Close Air Support mission conducted in the Air Force Research Laboratory's Multisensory Overview Large-scale Tactical Knowledge Environment (MOLTKE) Lab. Implications of this work and challenges associated with the integration of speech recognition technology into the Air Battle Management domain are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - speech interfaces KW - workstation functions KW - Airborne Warning and Control System KW - Laptop Speech Interface Demonstrator KW - 2004 KW - Automated Speech Recognition KW - Computer Applications KW - Human Computer Interaction KW - Military Psychology KW - 2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-02798-004&site=ehost-live&scope=site UR - todd.nelson@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2004-21845-002 AN - 2004-21845-002 AU - Gunzelmann, Glenn AU - Anderson, John R. AU - Douglass, Scott T1 - Orientation Tasks with Multiple Views of Space: Strategies and Performance. JF - Spatial Cognition and Computation JO - Spatial Cognition and Computation JA - Spat Cogn Comput Y1 - 2004/// VL - 4 IS - 3 SP - 207 EP - 253 CY - US PB - Lawrence Erlbaum SN - 1387-5868 SN - 1542-7633 AD - Gunzelmann, Glenn, Air Force Research Laboratory, 6030 South Kent Street, Mesa, AZ, US, 85212-6061 N1 - Accession Number: 2004-21845-002. Partial author list: First Author & Affiliation: Gunzelmann, Glenn; National Research Council, Air Force Research Laboratory, Mesa, AZ, US. Other Publishers: Taylor & Francis. Release Date: 20050207. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Eye Movements; Imagery; Spatial Orientation (Perception); Task Analysis. Classification: Cognitive Processes (2340). Population: Human (10); Male (30); Female (40). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 47. Issue Publication Date: 2004. AB - Two experiments examine how participants vary in their approach to solving an orientation task. Verbal reports from untrained participants in a pilot study revealed that some participants used a strategy based on mental imagery, while others used verbal descriptions to do the task. The two experiments presented here involved training participants to perform the orientation task using one of these strategies. Participants' performance, measured by response time and eye movements, differed as a function of strategy. An ACT-R model of the task that uses the strategies provides a validation of the proposed mechanisms, producing a close fit to both the response time and eye movement data. The model's success is achieved, in part, by performing all aspects of the task, from processing the information on the screen to making responses. Overall, the results indicate that strategic variability is an important feature of human performance on such tasks. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - orientation task KW - mental imagery KW - verbal description KW - human performance KW - task analysis KW - spatial reasoning KW - strategy KW - computational model KW - ACT-R KW - eye movements KW - 2004 KW - Eye Movements KW - Imagery KW - Spatial Orientation (Perception) KW - Task Analysis KW - 2004 DO - 10.1207/s15427633scc0403_2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-21845-002&site=ehost-live&scope=site UR - glenn.gunzelmann@mesa.afmc.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Manke II., Gerald C. AU - Hewett, Kevin B. AU - Wisniewski, Charles F. AU - Truman, C. Randall AU - Hager, Gordon D. T1 - On the Presence of Rotational Nonequilibrium in a Supersonic Hydrogen Fluoride Laser. JO - IEEE Journal of Quantum Electronics JF - IEEE Journal of Quantum Electronics J1 - IEEE Journal of Quantum Electronics PY - 2003/12// Y1 - 2003/12// VL - 39 IS - 12 M3 - Article SP - 1625 EP - 1634 SN - 00189197 AB - Overtone small-signal gain data measured while operating a small-scale hydrogen-fluoride (HF) laser saturated on the fundamental transitions are compared with fundamental lasing output spectra and spontaneous overtone emission spectra measured orthogonal to the lasing axis. In all cases, the data are consistent with an equilibrium rotational distribution. These results are discussed in terms of their applicability to the question of rotational nonequilibrium in continuous wave HF lasers. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Journal of Quantum Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL lasers KW - HYDROGEN fluoride KW - LASERS KW - EQUILIBRIUM KW - HALIDES KW - SPECTRUM analysis N1 - Accession Number: 12101784; Source Information: Dec2003, Vol. 39 Issue 12, p1625; Subject Term: CHEMICAL lasers; Subject Term: HYDROGEN fluoride; Subject Term: LASERS; Subject Term: EQUILIBRIUM; Subject Term: HALIDES; Subject Term: SPECTRUM analysis; Subject Term: ; Number of Pages: 10p; ; Document Type: Article; L3 - 10.1109/JQE.2003.819556 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12101784&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Maimon, Jonathan D. AU - Hunt, Kenneth K. AU - Burcin, Laura AU - Rodgers, John T1 - Chalcogenide Memory Arrays: Characterization and Radiation Effects. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2003/12//Dec2003 Part 1 of 2 VL - 50 IS - 6 M3 - Article SP - 1878 EP - 1984 SN - 00189499 AB - The chalcogenide material used for phase-change applications in rewritable optical storage (Ge&sub2; Sb&sub2;5) has been integrated with a 0.5-μm radiation-hardened CMOS process to produce 64-Kbit memory arrays. On selected arrays, electrical testing demonstrated up to 100% memory cell yield, 100-ns programming and read speeds, and write currents as low as 1 mA/bit. Devices functioned normally from -55°C to 125°C. Write/read endurance has been demonstrated to 1 × 108 before first bit failure. Total ionizing dose (TID) testing to 2 Mrad(Si) showed no degradation of chalcogenide memory element, but it identified a write current generator circuit degradation specific to the test chip, which can be easily corrected in the next generation of array and product. Static single-event effects (SEE) testing showed no effect to an effective linear energy transfer (LETEFF) of 98 MeV/rng/cm². Dynamic SEE testing showed no latchup or single-event gate rupture (SEGR) to, an LETEFF of 123 MeV/mg/cm&sub2;. Two sensitive circuits, neither containing chalcogenide elements, and both with small error cross sections, were identified. The sense amp appears sensitive to transients when reading the high-resistance state. The write driver circuit may be falsely activated during a read cycle, resulting in a reprogrammed bit. Radiation results show no degradation to the hardened CMOS or effects. that can be attributed to the phase-change material. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Radiation KW - Optical disk drives KW - Chalcogenides KW - Complementary metal oxide semiconductors KW - Integrated circuits KW - Linear energy transfer KW - Chalcogenide KW - memory KW - nonvolatile KW - phase change KW - single event KW - total dose. N1 - Accession Number: 12517422; Maimon, Jonathan D. 1; Email Address: jmaimon@ovonyx.com; Hunt, Kenneth K. 2; Email Address: ken.hunt@kirtland.af.mil; Burcin, Laura 3; Email Address: laura.burcin@baesystems.com; Rodgers, John 3; Email Address: john.rodgers@baesystems.com; Affiliations: 1: Ovonyx, Inc., Manassas, VA 20110 USA.; 2: Space Vehicles Directorate of the Air Force Research Laboratory, Kirtiand AFB, NM, 87I17 USA.; 3: BAE Systems, Manassas, VA 20110 USA.; Issue Info: Dec2003 Part 1 of 2, Vol. 50 Issue 6, p1878; Thesaurus Term: Radiation; Subject Term: Optical disk drives; Subject Term: Chalcogenides; Subject Term: Complementary metal oxide semiconductors; Subject Term: Integrated circuits; Subject Term: Linear energy transfer; Author-Supplied Keyword: Chalcogenide; Author-Supplied Keyword: memory; Author-Supplied Keyword: nonvolatile; Author-Supplied Keyword: phase change; Author-Supplied Keyword: single event; Author-Supplied Keyword: total dose.; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334112 Computer Storage Device Manufacturing; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TNS.2003.821377 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12517422&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Hjalmarson, Harold P. AU - Pease, Ronald L. AU - Witczak, Steven C. AU - Shaneyfelt, Marty R. AU - Schwank, James R. AU - Edwards, Arthur H. AU - Hembree, Charles E. AU - Mattsson, Thomas R. T1 - Mechanisms for Radiation. Dose-Rate Sensitivity of Bipolar Transistors. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2003/12//Dec2003 Part 1 of 2 VL - 50 IS - 6 M3 - Article SP - 1901 EP - 1909 SN - 00189499 AB - Mechanisms for enhanced low-dose-rate sensitivity are described. In these mechanisms, bimolecular reactions dominate the kinetics at high dose rates thereby causing a sub-linear dependence on total dose, and this leads. to a dose-rate dependence. These bimolecular mechanisms include electron-hole. recombination, hydrogen recapture at hydrogen source sites, and hydrogen dimerization to form hydrogen molecules. The essence of each of these mechanisms is the dominance of the bimolecular reactions over the radiolysis reaction at high dose rates. However, at low dose rates, the radiolysis reaction dominates leading to a maximum effect of the radiation. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Radiation KW - Hydrogen KW - Bipolar transistors KW - Semiconductor junctions KW - Silica KW - Protons KW - Bimolecular reaction KW - bipolar junction transistor KW - cracking KW - dimerization KW - dose rate KW - ELORS KW - excess base current KW - hole KW - hydrogen KW - interface trap KW - kinetics KW - proton KW - radiation KW - recombination KW - silicon dioxide. N1 - Accession Number: 12517426; Hjalmarson, Harold P. 1; Email Address: hphjalm@sandia.gov; Pease, Ronald L. 2; Witczak, Steven C. 3; Email Address: steven.c.witczak@aero.org; Shaneyfelt, Marty R. 4; Schwank, James R. 4; Edwards, Arthur H. 5; Hembree, Charles E. 6; Mattsson, Thomas R. 7; Affiliations: 1: Sandia National Laboratories, MS-0316, Albuquerque, NM 87185 USA.; 2: RLP Research, Los Lunas NM 87031 USA.; 3: Electronics Technology Center, Aerospace Corporation, El Segundo, CA 90245 USA.; 4: Department 1762-1, Sandia National Laboratories, Albuquerque, NM 87185 USA.; 5: Air Force Research Laboratory, Albuquerque, NM 87117 USA.; 6: Department 1739, Sandia National Laboratories, Albuquerque, NM 87185 USA.; 7: Department 1674, Sandia National Laboratories, Albuquerque, NM 87185 USA.; Issue Info: Dec2003 Part 1 of 2, Vol. 50 Issue 6, p1901; Thesaurus Term: Radiation; Thesaurus Term: Hydrogen; Subject Term: Bipolar transistors; Subject Term: Semiconductor junctions; Subject Term: Silica; Subject Term: Protons; Author-Supplied Keyword: Bimolecular reaction; Author-Supplied Keyword: bipolar junction transistor; Author-Supplied Keyword: cracking; Author-Supplied Keyword: dimerization; Author-Supplied Keyword: dose rate; Author-Supplied Keyword: ELORS; Author-Supplied Keyword: excess base current; Author-Supplied Keyword: hole; Author-Supplied Keyword: hydrogen; Author-Supplied Keyword: interface trap; Author-Supplied Keyword: kinetics; Author-Supplied Keyword: proton; Author-Supplied Keyword: radiation; Author-Supplied Keyword: recombination; Author-Supplied Keyword: silicon dioxide.; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TNS.2003.821803 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12517426&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Marshall, Paul W. AU - Hubbs, John E. AU - Arrington, Douglas C. AU - Marshall, Cheryl J. AU - Reed, Robert A. AU - Gee, George AU - Pickel, James C. AU - Ramos, Rodolfo A. T1 - Proton-lnduced Transients and Charge Collection Measurements in a LWIR HgCdTe Focal Plane.Array. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2003/12//Dec2003 Part 1 of 2 VL - 50 IS - 6 M3 - Article SP - 1968 EP - 1973 SN - 00189499 AB - We compare measurements and modeling of 27 and 63 MeV proton-induced transients in alarge-format HgCdTe long wavelength infrared (LWIR) focal plane assembly operating at 40 K. Charge collection measurements describe very limited diffusion of carriers to multiple pixels showing significantly reduced particle Induced cross-talk for the lateral diffusion structure. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Radiation KW - Infrared detectors KW - Protons KW - Cosmic rays KW - Silicon KW - Probability theory KW - protons KW - radiation effects. N1 - Accession Number: 12517436; Marshall, Paul W. 1; Email Address: pwmarshall@aol.com; Hubbs, John E. 2; Email Address: john.hubbs@kirtland.af.mil; Arrington, Douglas C. 2; Email Address: doug.athngton@kirtland.af.mil; Marshall, Cheryl J. 3; Email Address: cmarshall2@aol.com; Reed, Robert A. 3; Email Address: Robert.Reed@nasa.gov; Gee, George 4; Email Address: George.B.Gee.1@gsfc.nasa.gov; Pickel, James C. 5; Email Address: jim@pickel.net; Ramos, Rodolfo A. 6; Email Address: rodolfo.ramos@kirtland.af.mil; Affiliations: 1: Consultant, NASA Goddard Space Flight Center, Brookneal, VA 24528 USA.; 2: Air Force Research Laboratory/Space Vehicles Directorate, Infrared Radiation Effects Laboratory, Ball Aerospace and Technologies Corporation, Albuquerque, NM 87185 USA.; 3: NASA Goddard Space flight Center, Greenbelt, MD 20771 USA.; 4: SGT, Inc., Greenbelt, MD 20771 USA.; 5: PRT, Inc., Fallbrook, CA 92028 USA.; 6: Air Force Research Laboratory/Space Vehicles Directorate, Infrared Radiation Effects Laboratory, Albuquerque, NM 87117 USA.; Issue Info: Dec2003 Part 1 of 2, Vol. 50 Issue 6, p1968; Thesaurus Term: Radiation; Subject Term: Infrared detectors; Subject Term: Protons; Subject Term: Cosmic rays; Subject Term: Silicon; Subject Term: Probability theory; Author-Supplied Keyword: protons; Author-Supplied Keyword: radiation effects.; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TNS.2003.820749 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12517436&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Dichter, Bronislaw K. AU - Woolf, Stanley T1 - Grazing Angle Proton Scattering: Effects on Chandra and XMM-Newton X-Ray Telescopes. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2003/12//Dec2003 Part 1 of 2 VL - 50 IS - 6 M3 - Article SP - 2292 EP - 2295 SN - 00189499 AB - A proton scattering process resulted in damage to one of the Chandra X-ray telescope's focal plane detectors. In this process, incident protons were transmitted, by scattering off the telescope mirrors, to the focal plane. We identify the proton population responsible for the damage and, using a proper grazing angle formalism, we show, that the standard calculations of grazing angle scattering will significantly Under predict the expected proton flux at the focal plane. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Radiation KW - Forecasting KW - Charge coupled devices KW - X-ray telescopes KW - Protons -- Scattering KW - Focal planes KW - Chandra X-ray telescope CCD radiation damage. N1 - Accession Number: 12517481; Dichter, Bronislaw K. 1; Woolf, Stanley 2; Email Address: stan@arcon.com; Affiliations: 1: Air Force Research Laboratory, Space Weather Center, Hanscom AFB, MA 01731 USA.; 2: Arcon Corporation, Waltham, MA 02154, USA.; Issue Info: Dec2003 Part 1 of 2, Vol. 50 Issue 6, p2292; Thesaurus Term: Radiation; Thesaurus Term: Forecasting; Subject Term: Charge coupled devices; Subject Term: X-ray telescopes; Subject Term: Protons -- Scattering; Subject Term: Focal planes; Author-Supplied Keyword: Chandra X-ray telescope CCD radiation damage.; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TNS.2003.822092 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12517481&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Lai, Shu T. T1 - A Critical Overview on Spacecraft Charging Mitigation Methods. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2003/12//Dec2003 Part 1 of 2 VL - 31 IS - 6 M3 - Article SP - 1118 EP - 1124 SN - 00933813 AB - Interactions between hazardous space plasmas and spacecraft surfaces often result in spacecraft charging. Spacecraft charging may disturb the scientific measurements onboard, affect communications, control, and operations of spacecraft, and may be harmful to the health of the electronics on the spacecraft. Several mitigation methods have been proposed or tested in recent years. This paper presents a critical overview on all of the mitigation methods known to date: 1) passive methods using sharp spikes and high secondary emission coefficient surface materials and 2) active methods using controlled emissions of electrons, ions, plasmas, neutral gas, and polar molecules. Paradoxically, emission of low-energy positive ions from a highly negatively charged spacecraft can reduce the charging level, because the ions tend to return and may generate secondary electrons which then escape. We discuss the advantages and disadvantages of each of the methods and illustrate the ideas by means of examples of results obtained on SCATHA and DSCS satellites. Finally, mitigation of deep dielectric charging is briefly discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMMUNICATION KW - SPACE vehicles -- Electrostatic charging KW - SPACE plasmas KW - ELECTRON emission KW - ELECTRON beams KW - DIELECTRICS KW - Dielectric charging KW - differential charging KW - discharging KW - electron beam KW - ion beam KW - mitigation KW - plasma emission KW - space plasma. KW - spacecraft charging N1 - Accession Number: 12374156; Lai, Shu T. 1; Email Address: Shu.Lai@hanscom.af.mil; Affiliations: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731 USA.; Issue Info: Dec2003 Part 1 of 2, Vol. 31 Issue 6, p1118; Thesaurus Term: COMMUNICATION; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: SPACE plasmas; Subject Term: ELECTRON emission; Subject Term: ELECTRON beams; Subject Term: DIELECTRICS; Author-Supplied Keyword: Dielectric charging; Author-Supplied Keyword: differential charging; Author-Supplied Keyword: discharging; Author-Supplied Keyword: electron beam; Author-Supplied Keyword: ion beam; Author-Supplied Keyword: mitigation; Author-Supplied Keyword: plasma emission; Author-Supplied Keyword: space plasma.; Author-Supplied Keyword: spacecraft charging; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TPS.2003.820969 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12374156&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Lin Cheng AU - Stecki, Andrew J. AU - Scofield, James D. T1 - Effect of Trimethylsilane Flow Rate on the Growth of SiC Thin-Films for Fiber-Optic Temperature Sensors. JO - Journal of Microelectromechanical Systems JF - Journal of Microelectromechanical Systems J1 - Journal of Microelectromechanical Systems PY - 2003/12// Y1 - 2003/12// VL - 12 IS - 6 M3 - Article SP - 797 EP - 803 SN - 10577157 AB - Presents an investigation into the effect of trimethylsilane (3MS) flow rate on the growth of silicon carbide (SiC) thin-film on single-crystal sapphire substrate for fiber-optic temperature sensor. SiC film thickness in the range of 2-3 μm; Structural properties; Optical reflection from the SiC thin-film Fabry-Pérot interferometers; One-way phase shifts in resonant minima on all measured samples. KW - FLOWS (Differentiable dynamical systems) KW - SILICON carbide KW - THIN films KW - FIBER optics KW - SAPPHIRES KW - TEMPERATURE KW - DETECTORS N1 - Accession Number: 12314964; Source Information: Dec2003, Vol. 12 Issue 6, p797; Subject Term: FLOWS (Differentiable dynamical systems); Subject Term: SILICON carbide; Subject Term: THIN films; Subject Term: FIBER optics; Subject Term: SAPPHIRES; Subject Term: TEMPERATURE; Subject Term: DETECTORS; Subject Term: ; Number of Pages: 7p; ; Illustrations: 13 Black and White Photographs, 1 Diagram, 7 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12314964&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 106740855 T1 - College coaches corner. Learning from each other: plyometric training. AU - Hedrick A AU - Dahoda J AU - Rogers R AU - Bennet S Y1 - 2003/12//2003 Dec N1 - Accession Number: 106740855. Language: English. Entry Date: 20040604. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletes, College KW - Muscle Strengthening -- Methods KW - Plyometrics KW - Athletic Training -- Methods SP - 53 EP - 54 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 25 IS - 6 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - Head Strength and Conditioning Coach, United States Air Force Academy UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106740855&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2004-22232-011 AN - 2004-22232-011 AU - Wilson, Glenn F. AU - Russell, Christopher A. T1 - Real-Time Assessment of Mental Workload Using Psychophysiological Measures and Artificial Neural Networks. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2003///Win 2003 VL - 45 IS - 4 SP - 635 EP - 643 CY - US PB - Human Factors & Ergonomics Society SN - 0018-7208 SN - 1547-8181 AD - Wilson, Glenn F., AFRL/HECP, 2255 H St., Wright-Patterson Air Force Base, OH, US, 45433-7022 N1 - Accession Number: 2004-22232-011. PMID: 15055460 Partial author list: First Author & Affiliation: Wilson, Glenn F.; U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Other Publishers: Sage Publications. Release Date: 20050103. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Human Machine Systems; Neural Networks; Physiological Correlates; Task Complexity; Work Load. Minor Descriptor: Artificial Neural Networks. Classification: Engineering & Environmental Psychology (4000). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 9. Issue Publication Date: Win 2003. AB - The functional state of the human operator is critical to optimal system performance. Degraded states of operator functioning can lead to errors and overall suboptimal system performance. Accurate assessment of operator functional state is crucial to the successful implementation of an adaptive aiding system. One method of determining operators' functional state is by monitoring their physiology. In the present study, artificial neural networks using physiological signals were used to continuously monitor, in real time, the functional state of 7 participants while they performed the Multi-Attribute Task Battery with two levels of task difficulty. Six channels of brain electrical activity and eye, heart and respiration measures were evaluated on line. The accuracy of the classifier was determined to test its utility as an on-line measure of operator state. The mean classification accuracies were 85%, 82%, and 86% for the baseline, low task difficulty, and high task difficulty conditions, respectively. The high levels of accuracy suggest that these procedures can be used to provide accurate estimates of operator functional state that can be used to provide adaptive aiding. The relative contribution of each of the 43 psychophysiological features was also determined. Actual or potential applications of this research include test and evaluation and adaptive aiding implementation. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - mental workload KW - operator functioning KW - physiological signals KW - artificial neural networks KW - task difficulty KW - 2003 KW - Human Machine Systems KW - Neural Networks KW - Physiological Correlates KW - Task Complexity KW - Work Load KW - Artificial Neural Networks KW - 2003 DO - 10.1518/hfes.45.4.635.27088 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-22232-011&site=ehost-live&scope=site UR - glenn.wilson@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2004-10149-021 AN - 2004-10149-021 AU - Repperger, D. W. AU - Gilkey, R. H. AU - Green, R. AU - LaFleur, T. AU - Haas, M. W. T1 - Effects of haptic feedback and turbulence on landing performance using an immersive cave automatic virtual environment (CAVE). JF - Perceptual and Motor Skills JO - Perceptual and Motor Skills JA - Percept Mot Skills Y1 - 2003/12// VL - 97 IS - 3, Pt 1 SP - 820 EP - 832 CY - US PB - Perceptual & Motor Skills SN - 0031-5125 SN - 1558-688X AD - Repperger, D. W., Air Force Research Laboratory, Wright-Patterson Air Force Base, Building 33 AFRL/HECP, Dayton, OH, US, 45433-7022 N1 - Accession Number: 2004-10149-021. Other Journal Title: Perceptual & Motor Skills Research Exchange. Partial author list: First Author & Affiliation: Repperger, D. W.; Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, US. Other Publishers: Sage Publications. Release Date: 20040628. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Environmental Stress; Performance Tests; Sensory Feedback; Virtual Reality. Classification: Sensory Perception (2320). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 13. Issue Publication Date: Dec, 2003. AB - An investigation was conducted in which subjects had to land a simulated F-16 aircraft using a CAVE (Cave Automatic Virtual Environment) facility. This was a three-dimensional virtual setting consisting of multiple mirrors, 3-D video-projected displays in a highly stressful environment employing a haptic joystick. Six subjects learned a task that required landing in wind turbulence with a reduced visual scene. Analyses indicated that during landing, performance error variables which occurred in the same direction as the haptic forces were significantly reduced. This was true, especially when the visual scene was occluded and more reliance on the proprioceptive condition was beneficial. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - haptic feedback KW - landing performance KW - wind turbulence KW - immersive cave automatic virtual environment KW - 2003 KW - Environmental Stress KW - Performance Tests KW - Sensory Feedback KW - Virtual Reality KW - 2003 DO - 10.2466/PMS.97.7.820-832 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-10149-021&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Fraga, Carlos G. T1 - Chemometric approach for the resolution and quantification of unresolved peaks in gas chromatography–selected-ion mass spectrometry data JO - Journal of Chromatography A JF - Journal of Chromatography A Y1 - 2003/11/26/ VL - 1019 IS - 1/2 M3 - Article SP - 31 SN - 00219673 AB - A semiautomated and integrated chemometric approach is presented for the resolution and quantification of unresolved target-analyte signals in gas chromatography-selected-ion monitoring (GC-SIM) data collected using scanning mass spectrometers. The chemometric approach utilizes an unskewing algorithm and two multivariate chemometric methods known as rank alignment and the generalized rank annihilation method (GRAM). The unskewing algorithm corrects the retention-time differences within a single GC-SIM data matrix caused by using a scanning mass spectrometer. Rank alignment objectively corrects the run-to-run retention-time difference between a sample GC-SIM data matrix and a standard addition GC-SIM data matrix. GRAM analysis uses the sample and standard addition data matrices to mathematically resolve and quantify the target-analyte signal(s). The resolution and quantification of severely unresolved target-analyte signals are demonstrated using GC-SIM data obtained from conventional heart-cut two-dimensional gas chromatography with mass spectrometric detection. In addition, the GC-SIM data is used to demonstrate the result of chemometric analysis when the absence of a target-analyte signal is obscured by interference. Chemometric analysis is shown to unambiguously detect an analyte based on its resolved mass chromatograms in situations where the traditional approach of measuring peak height fails to positively detect it. The predicted analyte concentrations are within 8% of the reference concentrations. [Copyright &y& Elsevier] AB - Copyright of Journal of Chromatography A is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Gas chromatography KW - Chromatographic analysis KW - Spectrometry KW - Mass spectrometers KW - Chromatograms KW - Chemometrics KW - Curve resolution KW - Generalized rank annihilation method KW - Unresolved peaks N1 - Accession Number: 11179581; Fraga, Carlos G. 1; Email Address: carlos.fraga@usafa.af.mil; Affiliations: 1: Department of Chemistry, 2355 Fairchild Dr., Suite 2N225, United States Air Force Academy, Colorado 80840-6230, USA; Issue Info: Nov2003, Vol. 1019 Issue 1/2, p31; Thesaurus Term: Gas chromatography; Thesaurus Term: Chromatographic analysis; Thesaurus Term: Spectrometry; Subject Term: Mass spectrometers; Subject Term: Chromatograms; Author-Supplied Keyword: Chemometrics; Author-Supplied Keyword: Curve resolution; Author-Supplied Keyword: Generalized rank annihilation method; Author-Supplied Keyword: Unresolved peaks; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/S0021-9673(03)01329-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=11179581&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Sinha, Amanda E. AU - Prazen, Bryan J. AU - Fraga, Carlos G. AU - Synovec, Robert E. T1 - Valve-based comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometric detection: instrumentation and figures-of-merit JO - Journal of Chromatography A JF - Journal of Chromatography A Y1 - 2003/11/26/ VL - 1019 IS - 1/2 M3 - Article SP - 79 SN - 00219673 AB - A valve-based comprehensive two-dimensional gas chromatograph coupled to a time-of-flight mass spectrometer (GC×GC/TOFMS) is demonstrated. The performance characteristics of the instrument were evaluated using a complex sample containing a mixture of fuel components, natural products, and organo-phosphorous compounds. The valve-based GC×GC, designed to function with an extended temperature of operation range, is shown to have high chromatographic resolution, high separation efficiency and low detection limits. Typical peak widths at base are nominally from 100 to 300 ms on column 2 and nominally 10 s on column 1. The injected mass and injected concentration limit of detection (LOD), defined as 3 standard deviations above the mean baseline noise, for three organo-phosphorous compounds (triethylphosphorothioate (TEPT), dimethyl methyl phosphonate (DMMP) and dimethyl phosphite (DMP)) in a complex environmental sample were from 6 to 38 pg, and 3 to 17 ng/ml, respectively. The temperature program for the environmental sample ranged from 40 to 230 °C, a temperature range capable of analyzing semi-volatile compounds. A new compact, stand-alone, valve-pulse generator device has been implemented and is also reported. The valve-based GC×GC instrument, therefore, offers a simple, rugged and less expensive alternative to thermally modulated instruments. [Copyright &y& Elsevier] AB - Copyright of Journal of Chromatography A is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Gas chromatography KW - Chromatographic analysis KW - Mass spectrometry KW - Spectrum analysis KW - Phosphamidon KW - Engineering instruments KW - Dimethyl methyl phosphonate KW - Dimethyl phosphite KW - Gas chromatography, comprehensive two-dimensional KW - Instrumentation KW - Modulator, valve-based KW - Time-of-flight mass spectrometry KW - Triethylphosphorothioate N1 - Accession Number: 11179585; Sinha, Amanda E. 1; Prazen, Bryan J. 1; Fraga, Carlos G. 2; Synovec, Robert E. 1; Email Address: synovec@chem.washington.edu; Affiliations: 1: Center for Process Analytical Chemistry, Department of Chemistry, Box 351700, University of Washington, Seattle, WA 98195-1700, USA; 2: Department of Chemistry, 2355 Fairchild Dr. Suite 2N225, United States Air Force Academy, Colorado Springs, CO 80840-6230, USA; Issue Info: Nov2003, Vol. 1019 Issue 1/2, p79; Thesaurus Term: Gas chromatography; Thesaurus Term: Chromatographic analysis; Thesaurus Term: Mass spectrometry; Thesaurus Term: Spectrum analysis; Thesaurus Term: Phosphamidon; Subject Term: Engineering instruments; Author-Supplied Keyword: Dimethyl methyl phosphonate; Author-Supplied Keyword: Dimethyl phosphite; Author-Supplied Keyword: Gas chromatography, comprehensive two-dimensional; Author-Supplied Keyword: Instrumentation; Author-Supplied Keyword: Modulator, valve-based; Author-Supplied Keyword: Time-of-flight mass spectrometry; Author-Supplied Keyword: Triethylphosphorothioate; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.chroma.2003.08.047 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=11179585&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Kadiyala, Venkateswarlu AU - Nadeau, Lloyd J. AU - Spain, Jim C. T1 - Construction of Escherichia coli Strains for Conversion of Nitroacetophenones to ortho-Aminophenols. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2003/11// VL - 69 IS - 11 M3 - Article SP - 6520 EP - 6526 SN - 00992240 AB - The predominant bacterial pathway for nitrobenzene (NB) degradation uses an NB nitroreductase and hydroxylaminobenzene (HAB) mutase to form the ring-fission substrate ortho-aminophenol. We tested the hypothesis that constructed strains might accumulate the aminophenols from nitroacetophenones and other nitroaromatic compounds. We constructed a recombinant plasmid carrying NB nitroreductase (nbzA) and HAB mutase A (habA) genes, both from Pseudomonas pseudoalcaligenes JS45, and expressed the enzymes in Escherichia coli JS995. IPTG (isopropyl-β-D-thiogalactopyranoside)-induced cells of strain JS995 rapidly and stoichiometrically converted NB to 2-aminophenol, 2-nitroacetophenone (2NAP) to 2-amino-3-hydroxyacetophenone (2AHAP), and 3-nitroacetophenone (3NAP) to 3-amino-2-hydroxyacetophenone (3AHAP). We constructed another recombinant plasmid containing the nitroreductase gene (nfs1) from Enterobacter cloacae and habA from strain JS45 and expressed the enzymes in E. coli JS996. Strain JS996 converted NB to 2-aminophenol, 2-nitrotoluene to 2-amino-3-methylphenol, 3-nitrotoluene to 2-amino-4-methylphenol, 4-nitrobiphenyl ether to 4-amino-5-phenoxyphenol, and 1-nitronaphthalene to 2-amino-1-naphthol. In larger-scale biotransformations catalyzed by strain JS995, 75% of the 2NAP transformed was converted to 2AHAP, whereas 3AHAP was produced stoichiometrically from 3NAP. The final yields of the aminophenols after extraction and recovery were >64%. The biocatalytic synthesis of ortho-aminophenols from nitroacetophenones suggests that strain JS995 may be useful in the biocatalytic production of a variety of substituted ortho-aminophenols from the corresponding nitroaromatic compounds. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Escherichia coli KW - Phenols KW - Nitroaromatic compounds N1 - Accession Number: 11613107; Kadiyala, Venkateswarlu 1; Nadeau, Lloyd J. 1; Spain, Jim C. 1; Email Address: Jim.Spain@tyndall.af.mil; Affiliations: 1: Air Force Research Laboratory, Tyndall Air Force Base, Florida; Issue Info: Nov2003, Vol. 69 Issue 11, p6520; Thesaurus Term: Escherichia coli; Thesaurus Term: Phenols; Subject Term: Nitroaromatic compounds; Number of Pages: 7p; Illustrations: 2 Diagrams, 2 Charts, 8 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=11613107&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Welle, Eric J. AU - Roberts, William L. AU - Carter, Campbell D. AU - Donbar, Jeffrey M. T1 - The response of a propane-air counter-flow diffusion flame subjected to a transient flow field JO - Combustion & Flame JF - Combustion & Flame Y1 - 2003/11// VL - 135 IS - 3 M3 - Article SP - 285 SN - 00102180 AB - OH planar laser-induced fluorescence (PLIF) and particle image velocimetry have been used to study the frequency response of laminar C3H8-air counterflow diffusion flames to assess the adequacy of the steady-flamelet models. Particle image velocimetry was used to determine the flame strain rate, while OH PLIF was used both to measure temperature at the flame front, using the two-line PLIF technique, and the reaction-zone width. Both measurements demonstrate that the frequency response of flames subjected to a time-varying flow field is diffusion-limited. At the 30-Hz and 50-Hz forcing frequencies, the maximum reaction-zone temperature and width were found to respond quasi-steadily. However, at higher forcing frequencies-i.e., 100 and 200 Hz-transient behavior is evident from the phase relationship between the imposed sinusoidal strain rate and the resulting peak temperature and reaction-zone width. The measured values of the OH-field widths were well fit by an offset sine function. In all cases when the oscillation amplitude is normalized by the cycle mean strain rate and plotted against the non-dimensional flow field frequency, the results collapse onto a single line having a steep negative slope. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Diffusion KW - Laminar flow KW - Oscillations KW - Diffusion flame KW - PIV KW - PLIF KW - Stokes parameter KW - Transient flame KW - Unsteady flame N1 - Accession Number: 11402781; Welle, Eric J. 1; Roberts, William L. 1; Email Address: wlrobert@eos.ncsu.edu; Carter, Campbell D. 2; Donbar, Jeffrey M. 2; Affiliations: 1: Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695-7910, USA; 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7103, USA; Issue Info: Nov2003, Vol. 135 Issue 3, p285; Thesaurus Term: Diffusion; Subject Term: Laminar flow; Subject Term: Oscillations; Author-Supplied Keyword: Diffusion flame; Author-Supplied Keyword: PIV; Author-Supplied Keyword: PLIF; Author-Supplied Keyword: Stokes parameter; Author-Supplied Keyword: Transient flame; Author-Supplied Keyword: Unsteady flame; Number of Pages: 13p; Document Type: Article L3 - 10.1016/S0010-2180(03)00167-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=11402781&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Zhao, Jian-Shen AU - Spain, Jim AU - Hawari, Jalal T1 - Phylogenetic and metabolic diversity of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX)-transforming bacteria in strictly anaerobic mixed cultures enriched on RDX as nitrogen source JO - FEMS Microbiology Ecology JF - FEMS Microbiology Ecology Y1 - 2003/11// VL - 46 IS - 2 M3 - Article SP - 189 SN - 01686496 AB - Five obligate anaerobes that were most closely related to Clostridium bifermentans, Clostridium celerecrescens, Clostridium saccharolyticum, Clostridium butyricum and Desulfovibrio desulfuricans by their 16S rRNA genes sequences were isolated from enrichment cultures using hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) as a nitrogen source. The above isolates transformed RDX at rates of 24.0, 5.4, 6.2, 2.5, 5.5 μmol h−1 g (dry weight) of cells−1, respectively, to nitrite, formaldehyde, methanol, and nitrous oxide. The present results indicate that clostridia are major strains responsible for RDX removal, and all isolates seemed to mainly transform RDX via its initial reduction to MNX and subsequent denitration. Since clostridia are commonly present in soil, we suggest that they may contribute to the removal of RDX in the subsurface (anoxic) soil. [Copyright &y& Elsevier] AB - Copyright of FEMS Microbiology Ecology is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Nitroso compounds KW - Phylogeny KW - Clostridium KW - Nucleotide sequence KW - Denitration KW - Desulfovibrio KW - Enrichment culture KW - Nitramine explosive KW - Nitroso compound KW - RDX biotransformation N1 - Accession Number: 11175137; Zhao, Jian-Shen 1; Spain, Jim 2; Hawari, Jalal 1; Email Address: jalal.hawari@cnrc-nrc.gc.ca; Affiliations: 1: Biotechnology Research Institute, National Research Council of Canada, Montreal, Canada; 2: Air Force Research Laboratory – MLQL, Tyndall AFB, FL 32403, USA; Issue Info: Nov2003, Vol. 46 Issue 2, p189; Thesaurus Term: Nitroso compounds; Thesaurus Term: Phylogeny; Subject Term: Clostridium; Subject Term: Nucleotide sequence; Author-Supplied Keyword: Denitration; Author-Supplied Keyword: Desulfovibrio; Author-Supplied Keyword: Enrichment culture; Author-Supplied Keyword: Nitramine explosive; Author-Supplied Keyword: Nitroso compound; Author-Supplied Keyword: RDX biotransformation; Number of Pages: 8p; Document Type: Article L3 - 10.1016/S0168-6496(03)00216-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=11175137&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Seungmoon Jun, Eli AU - Tischler, V. A. AU - Venkayya, V. B. T1 - Multidisciplinary Design Optimization of a Built-Up Wing Structure with Tip Missile. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2003/11//Nov/Dec2003 Y1 - 2003/11//Nov/Dec2003 VL - 40 IS - 6 M3 - Article SP - 1093 EP - 1098 SN - 00218669 AB - The influence of a wing tip missile on the design optimization of a wing structure is studied. Finite element models of a realistic built-up wing structure are used to represent stiffness and mass properties. The store location and the effect of the store aerodynamics and mass are the variables included. A multidisciplinary optimization technique is used to compensate/restore the lost aeroelastic performance due to the presence of the store. Missile locations are the only configuration variables addressed besides the structural variables. The built-up wing box structure is optimized with constraints on the static strength and flutter speed. The thickness and the cross-sectional areas of the structural elements are the primary variables in the optimization. The aerodynamics of the tip missile has a significant effect on the flutter characteristics. In addition, the flutter behavior of the optimized structure is very sensitive to the tip missile movement along the tip chord. The results indicate that the effect of the tip missile aft movement must be examined in conjunction with the store aerodynamics. ASTROS is the primary tool used. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - AEROELASTICITY KW - AIRFRAMES KW - WINGS (Anatomy) KW - AERODYNAMICS N1 - Accession Number: 12252895; Source Information: Nov/Dec2003, Vol. 40 Issue 6, p1093; Subject Term: AIRPLANE wings; Subject Term: AEROELASTICITY; Subject Term: AIRFRAMES; Subject Term: WINGS (Anatomy); Subject Term: AERODYNAMICS; Subject Term: ; Number of Pages: 6p; ; Illustrations: 3 Diagrams, 2 Charts, 5 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12252895&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Pettit, Chris L. AU - Grandhi, Ramana V. T1 - Optimization of a Wing Structure for Gust Response and Aileron Effectiveness. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2003/11//Nov/Dec2003 Y1 - 2003/11//Nov/Dec2003 VL - 40 IS - 6 M3 - Article SP - 1185 EP - 1191 SN - 00218669 AB - Reliability-based weight optimization of a generic, fighter-like wing structure is conducted for gust response and aileron effectiveness constraints. The formulation accounts for parametric uncertainties in these aeroelastic response quantities. Reliability indices measure the probability of satisfying each constraint, and a preliminary design procedure is developed in which constraints are enforced on these indices. This framework integrates ASTROS for structural and loads analysis, object-oriented MATLAB® tools for reliability analysis, and DOT for optimization and most probable point estimation. The reliability analysis algorithm takes advantage of adaptive nonlinear approximations to compensate for nonlinearity of the failure surfaces. The wing structure is modeled with finite elements, each of which is assumed to have random thickness of known standard deviation. Young's modulus of the wing skin material is also assumed to be random. Mean thickness values are taken as design variables. Linear unsteady aerodynamics is used to estimate frequency response functions caused by continuous gust loads. Reliability index constraints are enforced for gust-induced bending moment and shear at the wing's root, and also for aileron effectiveness. Redistribution of structural mass by the optimizer produces designs with improved aeroelastic performance reliability and relatively small weight penalties. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - AIRFRAMES KW - AEROELASTICITY KW - AERODYNAMICS KW - FINITE element method N1 - Accession Number: 12252907; Source Information: Nov/Dec2003, Vol. 40 Issue 6, p1185; Subject Term: AIRPLANE wings; Subject Term: AIRFRAMES; Subject Term: AEROELASTICITY; Subject Term: AERODYNAMICS; Subject Term: FINITE element method; Subject Term: ; Number of Pages: 7p; ; Illustrations: 4 Diagrams, 2 Charts, 2 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12252907&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Gordnier, Raymond E. T1 - Computation of Limit-Cycle Oscillations of a Delta Wing. JO - Journal of Aircraft JF - Journal of Aircraft J1 - Journal of Aircraft PY - 2003/11//Nov/Dec2003 Y1 - 2003/11//Nov/Dec2003 VL - 40 IS - 6 M3 - Article SP - 1206 EP - 1208 SN - 00218669 AB - Focuses on the simulation of a limit-cycle oscillation (LCO) of a flat plate delta aircraft wing. Features of the delta wing model; Comparison of the amplitudes and frequencies of the wingtip trailing-edge deflections; Impact of the boundary condition specified along the root chord of the delta wing. KW - OSCILLATIONS KW - AIRPLANE wings KW - AIRFRAMES KW - SIMULATION methods & models KW - BOUNDARY value problems N1 - Accession Number: 12252910; Source Information: Nov/Dec2003, Vol. 40 Issue 6, p1206; Subject Term: OSCILLATIONS; Subject Term: AIRPLANE wings; Subject Term: AIRFRAMES; Subject Term: SIMULATION methods & models; Subject Term: BOUNDARY value problems; Subject Term: ; Number of Pages: 3p; ; Illustrations: 1 Diagram, 1 Chart, 3 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12252910&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Burton, Anthony C. AU - Carson, Katherine S. AU - Chilton, Susan M. AU - Hutchinson, W. George T1 - An experimental investigation of explanations for inconsistencies in responses to second offers in double referenda JO - Journal of Environmental Economics & Management JF - Journal of Environmental Economics & Management Y1 - 2003/11// VL - 46 IS - 3 M3 - Article SP - 472 SN - 00950696 AB - This paper demonstrates the potential for induced preference experiments to test previously unverified explanations of observed behavior in contingent valuation surveys. The NOAA Panel on Contingent Valuation called for experimental evidence on potential biases in the double referendum format. We test Carson, Groves, and Machina''s (Incentives and informational properties of preference questions, Plenary address to the European Association of Resource and Environmental Economists, Oslo, Norway, June 1999) simple cost uncertainty and weighted averaging explanations of inconsistent responses to follow-up offers in such double referenda against a baseline of certainty and truthful preference revelation. The results find evidence to support the Weighted Average hypothesis. Results regarding the cost uncertainty hypothesis are more ambiguous and merit further investigation. [Copyright &y& Elsevier] AB - Copyright of Journal of Environmental Economics & Management is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Environmental economics KW - Contingent valuation KW - Surveys KW - Double referenda KW - Experimental economics KW - Induced preferences N1 - Accession Number: 11098573; Burton, Anthony C. 1; Carson, Katherine S. 2; Email Address: kate.carson@usafa.af.mil; Chilton, Susan M. 3; Hutchinson, W. George 4; Affiliations: 1: Economics and Operational Research Division, Department of Health, Quarry House, Quarry Hill, Leeds LS2 7UE, UK; 2: Department of Economics and Geography, United States Air Force Academy, HQ USAFA/DFEG, 2354 Fairchild Drive, Ste. 6K110, USAF Academy, CO 80840-6299, USA; 3: University of Newcastle upon Tyne Business School-Economics, Newcastle upon Tyne, NE1 7RU, UK; 4: Department of Agricultural and Food Economics, Queen's University, Belfast, Northern Ireland, BT9 5PX, UK; Issue Info: Nov2003, Vol. 46 Issue 3, p472; Thesaurus Term: Environmental economics; Subject Term: Contingent valuation; Subject Term: Surveys; Author-Supplied Keyword: Double referenda; Author-Supplied Keyword: Experimental economics; Author-Supplied Keyword: Induced preferences; Number of Pages: 18p; Document Type: Article L3 - 10.1016/S0095-0696(03)00022-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=11098573&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Nielsen, Paul D. AU - Noor, Ahmed K. AU - Venneri, Samuel L. T1 - the next century of air power. JO - Mechanical Engineering JF - Mechanical Engineering Y1 - 2003/11// VL - 125 IS - 11 M3 - Article SP - 34 PB - American Society of Mechanical Engineers SN - 00256501 AB - In the United States, the commercial aerospace industry has been a dominant sector in the economy and the defense aerospace industry has been a vital component of national security. Our continued economic growth and national security in the 21st century will depend on strong U.S. leadership in the broad aerospace sector. As we approach the 100th anniversary of powered flight, engineers and scientists from the broad aerospace community have much to celebrate. This is an especially great time to be a technologist in the aerospace sector. There are many challenges, but there are also unbounded opportunities. Some are evolutionary and some are truly revolutionary. Much of this is driven by competition between highly evolved systems with foundations in the 20th century and new systems conceived in the 21st century. The next century of flight will see the roles of future unmanned vehicles merging with those of space-based assets as technology allows them to fly higher, longer and with more capable sensor packages. The key enabling technologies are found in mechanical systems, power systems and propulsion system components such as extended-life, high-temperature turbines and integrated, thermally managed fuel systems. INSET: Air meets space. KW - AEROSPACE industries KW - DEFENSE industries KW - SPACE industrialization KW - REMOTELY piloted vehicles KW - UNITED States N1 - Accession Number: 11272733; Nielsen, Paul D. 1; Noor, Ahmed K. 2; Venneri, Samuel L. 3; Affiliations: 1: Major General Paul D. Nielsen is the Commander of the Air Force Research Laboratory at Wright-Patterson Air Force Base in Ohio.; 2: Eminent Scholar and William E. Loebeck Professor of Aerospace Engineering and the director of the Center for Advanced Engineering Environments at Old Dominion University in Norfolk, Va. He is also adjunct professor of mechanical and aerospace engineering at the University of Florida in Gainesville.; 3: Former chief technologist of NASA.; Issue Info: Nov2003, Vol. 125 Issue 11, p34; Thesaurus Term: AEROSPACE industries; Thesaurus Term: DEFENSE industries; Thesaurus Term: SPACE industrialization; Subject Term: REMOTELY piloted vehicles; Subject: UNITED States; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing; NAICS/Industry Codes: 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing; Number of Pages: 7p; Illustrations: 5 Color Photographs; Document Type: Article; Full Text Word Count: 2951 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=11272733&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 2003-09584-001 AN - 2003-09584-001 AU - Caldwell, John A. AU - Caldwell, J. Lynn AU - Darlington, Kecia K. T1 - Utility of Dextroamphetamine for Attenuating the Impact of Sleep Deprivation in Pilots. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2003/11// VL - 74 IS - 11 SP - 1125 EP - 1134 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Caldwell, John A., AFRL/HEPM, 2485 Gillingham Dr., Bldg. 170, Brooks City-Base, TX, US, 78235 N1 - Accession Number: 2003-09584-001. PMID: 14620468 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Caldwell, John A.; U.S. Air Force Research Laboratory, Brooks City-Base, TX, US. Release Date: 20040823. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Dextroamphetamine; Sleep Deprivation. Minor Descriptor: Aerospace Personnel; Fatigue. Classification: Psychopharmacology (2580); Personnel Attitudes & Job Satisfaction (3650). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). References Available: Y. Page Count: 10. Issue Publication Date: Nov, 2003. AB - Introduction: Dextroamphetamine (Dexedrine®) is an effective fatigue countermeasure for use in military subject pilots who are deprived of sleep. Anecdotal reports have indicated Dexedrine (Dex) is effective in 'real world' sustained operations, and controlled laboratory tests have yielded positive results as well. The aim of this study was to substantiate the efficacy of Dex for sustaining the alertness and performance of pilots during periods of sleep deprivation by showing the robust effects of the medication and its consistent effects across several research efforts. Methods: In the present report, selected data from several controlled aviation studies were reviewed and combined to corroborate the efficacy of Dex as a fatigue countermeasure. Results: The results showed Dex to be effective for maintaining flight skills, psychological mood, and physiological activation (measured via electroencephalograph data) in sleep-deprived pilots. The positive benefits of the medication were not offset by marked disruptions in recovery sleep, although some negative effects were observed (sleep was lighter for several hours following drug administration). Conclusions: Dex is a viable remedy for fatigue in aviation sustained operations. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - dextroamphetamine KW - sleep deprivation KW - fatigue countermeasure KW - Dexedrine KW - pilot performance KW - psychological mood KW - physiological activation KW - aviation fatigue KW - 2003 KW - Dextroamphetamine KW - Sleep Deprivation KW - Aerospace Personnel KW - Fatigue KW - 2003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-09584-001&site=ehost-live&scope=site UR - john.caldwell@brooks.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2003-10209-005 AN - 2003-10209-005 AU - Darwin, Christopher J. AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Effects of fundamental frequency and vocal-tract length changes on attention to one of two simultaneous talkers. JF - Journal of the Acoustical Society of America JO - Journal of the Acoustical Society of America JA - J Acoust Soc Am Y1 - 2003/11// VL - 114 IS - 5 SP - 2913 EP - 2922 CY - US PB - Acoustical Society of American SN - 0001-4966 AD - Darwin, Christopher J., Experimental Psychology, University of Sussex, Brighton, United Kingdom, BNI 9QG N1 - Accession Number: 2003-10209-005. PMID: 14650025 Partial author list: First Author & Affiliation: Darwin, Christopher J.; Experimental Psychology, University of Sussex, Brighton, United Kingdom. Release Date: 20040906. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Attention; Pitch (Frequency); Speech Characteristics; Speech Perception. Minor Descriptor: Human Sex Differences; Speech Pitch; Vocalization. Classification: Auditory & Speech Perception (2326). Population: Human (10); Male (30); Female (40). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Nov, 2003. AB - The study conducts three experiments to check the effects of fundamental frquency and vocal-tract length changes on attention to one of two simultaneous talkers. The three experiments used the Coordinated Response Measure task to examine the roles that differences in F0 and differences in vocal-tract length have on the ability to attend to one of two simultaneous speech signals. Exp 1 asked how increases in the natural F0 difference between two sentences affected listeners' ability to attend to one of the sentences. Exp 2 used differences in vocal-tract length, and the third used both F0 and vocal-tract length differences. Exp 3 was varied both F0 and vocal tract length in concert to simulate a smooth transition between a same-sex and different-sex masking voice. Overall, it was found that shifting one of two female utterances towards a male voice resulted in improvement in performance whereas shifting male towards female did not. Performance increase varied with intonation patterns, being smallest for those speakers who showed most variability in intonation between utterances. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - intonation KW - vocal-tract length changes KW - speech signals KW - fundamental frequency KW - sex difference KW - simultaneous talkers KW - listener attention shift KW - 2003 KW - Attention KW - Pitch (Frequency) KW - Speech Characteristics KW - Speech Perception KW - Human Sex Differences KW - Speech Pitch KW - Vocalization KW - 2003 DO - 10.1121/1.1616924 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-10209-005&site=ehost-live&scope=site UR - cjd@biols.susx.ac.uk DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Alberga, Frank AU - Rollman, Michael AU - Boles, David AU - Spencer, David T1 - Logistics Career Broadening Program. JO - Air Force Journal of Logistics JF - Air Force Journal of Logistics J1 - Air Force Journal of Logistics PY - 2003///Fall2003 Y1 - 2003///Fall2003 VL - 27 IS - 3 M3 - Article SP - 8 EP - 11 PB - Superintendent of Documents SN - 0270403X AB - Discusses the Air Force Logistics Career Broadening Program (LCBP). Program highlights; Duties of career broadening officers; Reasons for becoming an LCBP officer; Benefits of the program for logistics officers. INSET: Program Highlights. KW - CAREER development KW - LOGISTICS KW - PERSONNEL management KW - MILITARY art & science KW - UNITED States. Air Force KW - UNITED States N1 - Accession Number: 11832086; Source Information: Fall2003, Vol. 27 Issue 3, p8; Subject Term: CAREER development; Subject Term: LOGISTICS; Subject Term: PERSONNEL management; Subject Term: MILITARY art & science; Subject Term: UNITED States. Air Force; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 4p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=11832086&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Shirriff, Adam J. T1 - Transformation of Logistics Career Field. JO - Air Force Journal of Logistics JF - Air Force Journal of Logistics J1 - Air Force Journal of Logistics PY - 2003///Fall2003 Y1 - 2003///Fall2003 VL - 27 IS - 3 M3 - Article SP - 12 EP - 43 PB - Superintendent of Documents SN - 0270403X AB - Discusses the transformation of logistics career field in the U.S. Processes affected by career-field transformation; Development of the Career Field Education and Training Plan; Number of logistics core competencies a logistics readiness officer needs to earn; Analysis of two competing logistics investments; Advantages of the net present value as a decision rule. KW - LOGISTICS KW - CAREER development KW - INVESTMENTS KW - NET present value KW - OCCUPATIONAL training KW - UNITED States N1 - Accession Number: 11832089; Source Information: Fall2003, Vol. 27 Issue 3, p12; Subject Term: LOGISTICS; Subject Term: CAREER development; Subject Term: INVESTMENTS; Subject Term: NET present value; Subject Term: OCCUPATIONAL training; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 2p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=11832089&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Schollars, Todd J. T1 - GERMAN WONDER WEAPONS. JO - Air Force Journal of Logistics JF - Air Force Journal of Logistics J1 - Air Force Journal of Logistics PY - 2003///Fall2003 Y1 - 2003///Fall2003 VL - 27 IS - 3 M3 - Article SP - 26 EP - 45 PB - Superintendent of Documents SN - 0270403X AB - Examines Germany's failure to mass produce and deploy their wonder weapons. High-technology weapons produced by Germany during World War II; Restrictions and obstacles Germany placed on its industry that affected the production time line of sensitive weapons; Political interference; Reasons why the wonder weapons not have given Germany any advantage. KW - WEAPONS KW - MASS production KW - WEAPONS industry KW - HIGH technology KW - GERMANY -- Politics & government KW - GERMANY N1 - Accession Number: 11832115; Source Information: Fall2003, Vol. 27 Issue 3, p26; Subject Term: WEAPONS; Subject Term: MASS production; Subject Term: WEAPONS industry; Subject Term: HIGH technology; Subject Term: GERMANY -- Politics & government; Subject Term: ; Geographic Subject: GERMANY; Geographic Subject: ; Number of Pages: 12p; ; Illustrations: 4 Black and White Photographs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=11832115&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Condon, Travis E. AU - Patterson, Kirk A. T1 - Supporting Special Operations Forces. JO - Air Force Journal of Logistics JF - Air Force Journal of Logistics J1 - Air Force Journal of Logistics PY - 2003///Fall2003 Y1 - 2003///Fall2003 VL - 27 IS - 3 M3 - Article SP - 38 EP - 40 PB - Superintendent of Documents SN - 0270403X AB - Presents key issues that may encounter by logisticians when supporting the U.S. Special Operations Command (USSOCOM). Overview of USSOCOM; Funding and acquisition requirements for unit-level and theater joint staff forces; Aspects of special operations forces; Steps to supporting the special operations warrior; Services provided by the Special Operations Forces Support Activity to USSOCOM. KW - LOGISTICS KW - SPECIAL operations (Military science) KW - U.S. Special Operations Command KW - MILITARY art & science KW - FINANCE KW - UNITED States N1 - Accession Number: 11832119; Source Information: Fall2003, Vol. 27 Issue 3, p38; Subject Term: LOGISTICS; Subject Term: SPECIAL operations (Military science); Subject Term: U.S. Special Operations Command; Subject Term: MILITARY art & science; Subject Term: FINANCE; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 3p; ; Illustrations: 1 Chart; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=11832119&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Gage, John T1 - Karate Helped Define Logistics. JO - Air Force Journal of Logistics JF - Air Force Journal of Logistics J1 - Air Force Journal of Logistics PY - 2003///Fall2003 Y1 - 2003///Fall2003 VL - 27 IS - 3 M3 - Article SP - 42 EP - 42 PB - Superintendent of Documents SN - 0270403X AB - Shows the distinction between operations and logistics based on the author's personal research and observation. Definition of logistics; Role of the concept of mind and body in helping the author in defining logistics; Definition of operations; Elements of logistics related to the human body. KW - LOGISTICS KW - OPERATIONS research KW - MIND & body KW - HUMAN body KW - RESEARCH KW - AUTHORS N1 - Accession Number: 11832123; Source Information: Fall2003, Vol. 27 Issue 3, p42; Subject Term: LOGISTICS; Subject Term: OPERATIONS research; Subject Term: MIND & body; Subject Term: HUMAN body; Subject Term: RESEARCH; Subject Term: AUTHORS; Subject Term: ; Number of Pages: 1p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=11832123&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Coleman, Nicholas V. AU - Spain, Jim C. T1 - Distribution of the Coenzyme M Pathway of Epoxide Metabolism among Ethene- and Vinyl Chloride-Degrading Mycobacterium Strains. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2003/10// VL - 69 IS - 10 M3 - Article SP - 6041 EP - 6046 SN - 00992240 AB - An epoxyalkane:coenzyme M (CoM) transferase (EaCoMT) enzyme was recently found to be active in the aerobic vinyl chloride (VC) and ethene assimilation pathways of Mycobacterium strain JS60. In the present study, EaCoMT activity and genes were investigated in 10 different mycobacteria isolated on VC or ethene from diverse environmental samples. In all cases, epoxyethane metabolism in cell extracts was dependent on CoM, with average specific activities of EaCoMT between 380 and 2,910 nmol/min/mg of protein. PCR with primers based on conserved regions of EaCoMT genes from Mycobacterium strain JS60 and the propene oxidizers Xanthobacter strain Py2 and Rhodococcus strain B-276 yielded fragments (834 bp) of EaCoMT genes from all of the VC- and ethene-assimilating isolates. The Mycobacterium EaCoMT genes form a distinct cluster and are more closely related to the EaCoMT of Rhodococcus strain B-276 than that of Xanthobacter strain Py2. The incongruence of the EaCoMT and 16S RRNA gene trees and the fact that isolates from geographically distant locations possessed almost identical EaCoMT genes suggest that lateral transfer of EaCoMT among the Mycobacterium strains has occurred. Pulsed-field gel electrophoresis revealed large linear plasmids (110 to 330 kb) in all of the VC-degrading strains. In Southern blotting experiments, the strain JS60 EaCoMT gene hybridized to many of the plasmids. The CoM-mediated pathway of epoxide metabolism appears to be universal in alkene-assimilating mycobacteria, possibly because of plasmid-mediated lateral gene transfer. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Vinyl chloride KW - Aerobic bacteria KW - Coenzymes KW - Transferases KW - Mycobacterium N1 - Accession Number: 11274429; Coleman, Nicholas V. 1; Spain, Jim C. 1; Email Address: Jim.Spain@tyndall.af.mil; Affiliations: 1: Air Force Research Laboratory—MLQL, Tyndall Air Force Base, Florida; Issue Info: Oct2003, Vol. 69 Issue 10, p6041; Thesaurus Term: Vinyl chloride; Thesaurus Term: Aerobic bacteria; Subject Term: Coenzymes; Subject Term: Transferases; Subject Term: Mycobacterium; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 6p; Illustrations: 3 Black and White Photographs, 1 Diagram, 1 Chart, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=11274429&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - FULLERTON, RICHARD T1 - AN EMPIRICAL ASSESSMENT OF US AIR FORCE. JO - Defence & Peace Economics JF - Defence & Peace Economics Y1 - 2003/10// VL - 14 IS - 5 M3 - Article SP - 343 EP - 355 SN - 10242694 AB - The US Air Force is facing a record shortfall in pilots over the coming decade. Using personnel data on more than 10,000 Air Force pilots, this study examines the factors affecting the retention of pilots and assesses the effectiveness of the pilot bonus programme implemented by the Air Force to reduce attrition. Although surveys indicated sustained deployment rates were the leading cause of job dissatisfaction among Air Force pilots, the results of this study suggest economic factors had the largest impact on retention. [ABSTRACT FROM AUTHOR] AB - Copyright of Defence & Peace Economics is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UNITED States -- Armed Forces KW - MILITARY strategy KW - Attrition KW - Military Personnel KW - Pilots KW - Retention KW - UNITED States. Air Force N1 - Accession Number: 10466047; FULLERTON, RICHARD 1; Affiliations: 1: Department of Economics and Geography, US Air Force Academy, Colorado 80841, USA; Issue Info: Oct2003, Vol. 14 Issue 5, p343; Subject Term: UNITED States -- Armed Forces; Subject Term: MILITARY strategy; Author-Supplied Keyword: Attrition; Author-Supplied Keyword: Military Personnel; Author-Supplied Keyword: Pilots; Author-Supplied Keyword: Retention ; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=10466047&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Fullerton, Richard L. AD - US Air Force Academy T1 - An Empirical Assessment of US Air Force Pilot Attrition JO - Defence and Peace Economics JF - Defence and Peace Economics Y1 - 2003/10// VL - 14 IS - 5 SP - 343 EP - 355 SN - 10430717 N1 - Accession Number: 0666029; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 200311 N2 - The US Air Force is facing a record shortfall in pilots over the coming decade. Using personnel data on more than 10,000 Air Force pilots, this study examines the factors affecting the retention of pilots and assesses the effectiveness of the pilot bonus programme implemented by the Air Force to reduce attrition. Although surveys indicated sustained deployment rates were the leading cause of job dissatisfaction among Air Force pilots, the results of this study suggest economic factors had the largest impact on retention. KW - National Security and War H56 KW - Public Sector Labor Markets J45 KW - Wage Level and Structure; Wage Differentials J31 KW - Labor Turnover; Vacancies; Layoffs J63 L3 - http://www.tandfonline.com/loi/gdpe20 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0666029&site=ehost-live&scope=site UR - http://www.tandfonline.com/loi/gdpe20 DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Hong, L. AU - Cong, S. AU - Wicker, D. T1 - Multirate interacting multiple model (MRIMM) filtering with out-of-sequence GMTI data. JO - IEE Proceedings -- Radar, Sonar & Navigation JF - IEE Proceedings -- Radar, Sonar & Navigation Y1 - 2003/10// VL - 150 IS - 5 M3 - Article SP - 333 EP - 343 SN - 13502395 AB - A multirate approach is developed for incorporating an out-of-sequence (OOS) measurement into a current estimate. There are two major steps in OOS filtering: retrospection from current time to OOS time and updating the current estimate with the OOS measurement, which imposes a high computation and memory burden on implementing OOS filtering. The multirate approach provides an excellent framework for efficient information retrospection and forward updating. A multirate interacting multiple model (MRIMM) filter is developed to track a target with or without manoeuvring behaviour in an environment of out-of-sequence measurement reporting. [ABSTRACT FROM AUTHOR] AB - Copyright of IEE Proceedings -- Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ESTIMATION theory KW - FILTERS (Mathematics) KW - BEHAVIOR N1 - Accession Number: 11451121; Hong, L. 1; Cong, S. 1; Wicker, D. 2; Affiliations: 1: Department of Electrical Engineering, Wright State University, Dayton, OH, USA; 2: Target Recognition Branch, Air Force Research Laboratory, Wright-Patterson AF, OH, USA; Issue Info: Oct2003, Vol. 150 Issue 5, p333; Thesaurus Term: ESTIMATION theory; Subject Term: FILTERS (Mathematics); Subject Term: BEHAVIOR; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=11451121&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Nikulin, Vladimir V. AU - Bouzoubaa, Mounir AU - Skormin, Victor A. AU - Busch, Timothy E. T1 - Lyapunov-Based Decentralized Adaptive Control for Laser Beam Tracking Systems. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2003/10// VL - 39 IS - 4 M3 - Article SP - 1191 EP - 1200 SN - 00189251 AB - A successful controller design is crucial for establishing and maintaining in optical link between free-space communication stations engaged in a laser communication session. This task is quite difficult due to nonlinear behavior, cross-coupled dynamics, and time-varying characteristics of all known beam steering technologies. A novel adaptive control technique utilizing Lyapunov function to ensure global asymptotic stability of the system, thus resulting in a highly robust system performance, is developed. The technique applied to a piezo-electric mirror setup results in a highly efficient controller design that does not require prior knowledge of system dynamics, while providing independent access to azimuth and elevation positions of the laser beam. The basic algorithm is presented and the results of its application are demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIFFERENTIAL equations KW - CONTROL theory (Mathematics) KW - LYAPUNOV functions KW - TRACKING radar KW - LASER beams KW - PIEZOELECTRICITY KW - MIRRORS N1 - Accession Number: 12437842; Nikulin, Vladimir V. 1; Email Address: vnikulin@binghamton.edu; Bouzoubaa, Mounir 1; Skormin, Victor A. 1; Busch, Timothy E. 2; Affiliations: 1: Laser Communication Research Laboratory, Binghamton University, Binghamton, NY 13902.; 2: Air Force Research Laboratory, Rome, NY 03441-4505.; Issue Info: Oct2003, Vol. 39 Issue 4, p1191; Thesaurus Term: DIFFERENTIAL equations; Thesaurus Term: CONTROL theory (Mathematics); Subject Term: LYAPUNOV functions; Subject Term: TRACKING radar; Subject Term: LASER beams; Subject Term: PIEZOELECTRICITY; Subject Term: MIRRORS; NAICS/Industry Codes: 238150 Glass and Glazing Contractors; NAICS/Industry Codes: 327215 Glass Product Manufacturing Made of Purchased Glass; NAICS/Industry Codes: 414390 Other home furnishings merchant wholesalers; NAICS/Industry Codes: 423220 Home Furnishing Merchant Wholesalers; NAICS/Industry Codes: 517919 All Other Telecommunications; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12437842&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Pasala, Krishna AU - Penno, Robert AU - Schneider, Stephen T1 - Novel Wideband Multimode Hybrid Interferometer System. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2003/10// VL - 39 IS - 4 M3 - Article SP - 1396 EP - 1406 SN - 00189251 AB - In this paper, a novel hybrid of a three-element interferometer comprised of multimode antennas is analyzed. The phase ambiguities associated with the long baselines of the interferometer are resolved using the "coarse" angle estimates provided by the multimode antenna. This results in the elimination of the short baseline interferometers of the conventional five-element interferometer. It is shown here that the signal-to-noise ratio (SNR) must be above a threshold value to resolve the phase ambiguities with a high degree of probability. An expression that shows the dependence of this threshold SNR on the interferometer spacing and the variance of the angle estimates provided by the multimode antenna is derived. A single three-element wideband multimode antenna interferometer can replace several five-element conventional interferometers, each covering a separate frequency band. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERFEROMETERS KW - HYBRID computer simulation KW - RADAR -- Antennas KW - ANTENNAS (Electronics) KW - FREQUENCY changers KW - FREQUENCY discriminators N1 - Accession Number: 12437856; Pasala, Krishna 1; Email Address: Krishna.Pasala@notes.udayton.edu; Penno, Robert 1; Email Address: Robert.Pemjo@notes.udayton.edu; Schneider, Stephen 2; Email Address: Stephen.Schneider@afrl.of.mil; Affiliations: 1: University of Dayton, 300 College Park, Dayton.; 2: United States Air Force, AFRL/SN, Wright-Patterson Air Force.; Issue Info: Oct2003, Vol. 39 Issue 4, p1396; Subject Term: INTERFEROMETERS; Subject Term: HYBRID computer simulation; Subject Term: RADAR -- Antennas; Subject Term: ANTENNAS (Electronics); Subject Term: FREQUENCY changers; Subject Term: FREQUENCY discriminators; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12437856&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Ping Xiong, James H. AU - Medley, Michael J. AU - Batalama, Stella N. T1 - Spatial and. Temporal Processing for Global. Navigation Satellite Systems: The GPS Receiver Paradigm. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2003/10// VL - 39 IS - 4 M3 - Article SP - 1471 EP - 1484 SN - 00189251 AB - We address the problem of navigation data demodulation by an adaptive GPS receiver that utilizes a bank of single-satellite linear-tap-delay filters and employs antenna-array reception. The presence of an antenna array allows the receiver to operate in the spatial domain in addition to the temporal (code) domain. We investigate disjoint-domain as well as joint-domain space-time GPS signal processing techniques and we consider design criteria of conventional matched-filter (MF) type, minimum-mean-square-error (MMSE), minimum-variance-distortionless-response (MVDR) type and auxiliary-vector (AV) type. The proposed structures utilize filters that operate at a fraction of the navigation data bit period (1 ms) and are follows by hard-decision detectors. Hard decisions taken over a navigation data bit period (20 ms) are then combined according to a simple combining rule for further bit-error-rate (BER) performance improvements. Analytic, numerical, and simulation comparisons illustrate the relative merits of the investigated receiver design alternatives. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARTIFICIAL satellites in telecommunication KW - ARTIFICIAL satellites KW - SIMULATION methods & models KW - NAVIGATION (Aeronautics) KW - AERONAUTICS KW - ANTENNAS (Electronics) KW - ANTENNA arrays N1 - Accession Number: 12437864; Ping Xiong, James H. 1; Medley, Michael J. 2; Batalama, Stella N. 1; Email Address: batalama@eng.buffalo.edu; Affiliations: 1: Department of Electrical Engineering State University of New York, Buffalo, NY, USA.; 2: Air Force Research Laboratory, IFGC, Broks Road, Rome, NY.; Issue Info: Oct2003, Vol. 39 Issue 4, p1471; Thesaurus Term: ARTIFICIAL satellites in telecommunication; Thesaurus Term: ARTIFICIAL satellites; Thesaurus Term: SIMULATION methods & models; Subject Term: NAVIGATION (Aeronautics); Subject Term: AERONAUTICS; Subject Term: ANTENNAS (Electronics); Subject Term: ANTENNA arrays; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 517410 Satellite Telecommunications; Number of Pages: 14p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12437864&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Lin Cheng AU - Steckl, Andrew J. AU - Scotfield, James T1 - SiC Thin-film Fabry—Perot Interferometer for Fiber-Optic Temperature Sensor. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices J1 - IEEE Transactions on Electron Devices PY - 2003/10// Y1 - 2003/10// VL - 50 IS - 10 M3 - Article SP - 2159 EP - 2164 SN - 00189383 AB - Polycrystalline SiC grown on single-crystal sapphire substrates have been investigated as thin-film Fabry-Perot interferometers for fiber-optic temperature measurements in harsh temperatures. SiC-based temperature sensors are compact in size, robust, and stable at high temperatures, making them one of the best choices for high temperature applications. SiC films with thickness of about 0.5-2.0 µm were grown at 1100 °C by chemical vapor deposition (CVD) with trimethylsilane. The effect of operating temperature on the shifts in resonance minima, δλ[sub m], of the SiC/sapphire substrate has been measured in the visible-infrared wavelength range. A temperature sensitivity of 1.0 × 10[sup -5]/°C is calculated using the minimum at ∼700 nm. Using a white, broadband light source, a temperature accuracy of ±3.5°C is obtained over the temperature range of 22 °C to 540 °C. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON carbide KW - THIN films N1 - Accession Number: 11087442; Source Information: Oct2003, Vol. 50 Issue 10, p2159; Subject Term: SILICON carbide; Subject Term: THIN films; Subject Term: ; Number of Pages: 6p; ; Illustrations: 4 Black and White Photographs, 2 Diagrams, 7 Graphs; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=11087442&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Gordnier, Raymond E. AU - Visbal, Miguel R. T1 - Computation of Three-Dimensional Nonlinear Panel Flutter. JO - Journal of Aerospace Engineering JF - Journal of Aerospace Engineering J1 - Journal of Aerospace Engineering PY - 2003/10// Y1 - 2003/10// VL - 16 IS - 4 M3 - Article SP - 155 EP - 166 PB - American Society of Civil Engineers SN - 08931321 AB - A recently developed three-dimensional viscous aeroelastic solver is applied to the solution of nonlinear panel flutter. The solution scheme implicitly couples a well validated Navier-Stokes code with a finite-difference procedure for the Von Karman plate equations by employing a subiteration strategy. Both low supersonic, M[sub ∞]=1.2, and subsonic, M[sub ∞]=0.95, cases are computed. For the supersonic case, the presence of either a laminar or turbulent boundary layer delays the onset of flutter, with higher flutter dynamic pressures resulting for thicker boundary layers. This effect is much less pronounced when the boundary layers are turbulent. In the subsonic case multiple solutions are obtained. The downwardly divergent solution displays a very complex interaction between the laminar boundary layer and the flexible panel that results in significant acoustic radiation from the vibrating panel. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerospace Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLATES (Engineering) KW - FLUTTER (Aerodynamics) KW - NAVIER-Stokes equations KW - VIBRATION (Aeronautics) KW - OSCILLATIONS KW - AERODYNAMICS N1 - Accession Number: 10848630; Source Information: Oct2003, Vol. 16 Issue 4, p155; Subject Term: PLATES (Engineering); Subject Term: FLUTTER (Aerodynamics); Subject Term: NAVIER-Stokes equations; Subject Term: VIBRATION (Aeronautics); Subject Term: OSCILLATIONS; Subject Term: AERODYNAMICS; Subject Term: ; Number of Pages: 12p; ; Document Type: Article; L3 - 10.1061/(ASCE)0893-1321(2003)16:4(155) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=10848630&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Sandholt, P.E. AU - Farrugia, C.J. AU - Denig, W.F. AU - Cowley, S.W.H. AU - Lester, M. T1 - Spontaneous and driven cusp dynamics: Optical aurora, particle precipitation, and plasma convection JO - Planetary & Space Science JF - Planetary & Space Science Y1 - 2003/10// VL - 51 IS - 12 M3 - Article SP - 797 SN - 00320633 AB - In this report we describe two different aspects of the dynamical behaviour of the cusp aurora which we refer to as (1) spontaneous and (2) directly driven events, respectively. The first aspect consists of a series of auroral activations/expansions observed during steady interplanetary magnetic field (IMF) and solar wind plasma conditions. This aspect we attribute to reconnection transients at the dayside magnetopause (flux transfer events). Applying a combination of ground and satellite observations, we document the auroral, particle precipitation, plasma convection, and field-aligned current signatures of these events. Emphasis is placed on the spatio-temporal evolution of the auroral and plasma convection events (pulsed ionospheric flows; PIFs) in the cusp ionosphere. Thus, we are able to document the multi-phase association between auroral brightenings/poleward moving auroral forms (PMAFs) and PIFs. Characteristic cusp ion steps (energy versus latitude profile) are observed during north-south traversals of the cusp by spacecraft Polar and DMSP F13 at the time of PMAFs. From the ground-satellite conjunction studies we infer the stepped cusp to be due to the traversal through a sequence of poleward-propagating open flux tubes originating in a pulsed magnetopause reconnection process. The region of the cusp ion steps is shown to be permeated by fine structure in the electron precipitation comprising a broad energy spectrum (30–600 eV). This observation accounts for the long auroral rays, spanning much of the altitude range 120–500 km, which are so typical for the cusp region. The second aspect of cusp dynamics consists of rapid transitions in the auroral configuration which are directly driven by abrupt changes in the external conditions, mainly northward and southward rotations of the IMF vector. Focus is placed on the rapidity of the transitions in the IMF-magnetosphere interconnection topology. The presence of a bifurcated (hybrid) cusp, with 1–5 keV auroral arcs excited at its poleward boundary, is documented during the northward IMF (clock angle range 45–70°) phase of one transition. [Copyright &y& Elsevier] AB - Copyright of Planetary & Space Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Solar wind KW - Magnetosphere KW - Plasma (Ionized gases) KW - Dayside aurora KW - Particle precipitation KW - Plasma convection KW - Solar wind–magnetosphere interaction N1 - Accession Number: 11040828; Sandholt, P.E. 1; Email Address: p.e.sandholt@fys.uio.no; Farrugia, C.J. 2; Denig, W.F. 3; Cowley, S.W.H. 4; Lester, M. 4; Affiliations: 1: Department of Physics, University of Oslo, Oslo, Norway; 2: Space Science Center, University of New Hampshire, Durham, NC, USA; 3: Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA, USA; 4: Department of Physics and Astronomy, University of Leicester, Leicester, UK; Issue Info: Oct2003, Vol. 51 Issue 12, p797; Subject Term: Solar wind; Subject Term: Magnetosphere; Subject Term: Plasma (Ionized gases); Author-Supplied Keyword: Dayside aurora; Author-Supplied Keyword: Particle precipitation; Author-Supplied Keyword: Plasma convection; Author-Supplied Keyword: Solar wind–magnetosphere interaction; Number of Pages: 16p; Document Type: Article L3 - 10.1016/S0032-0633(03)00114-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=11040828&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2004-10646-004 AN - 2004-10646-004 AU - Casebeer, William D. T1 - Moral Cognition and its Neural Constituents. JF - Nature Reviews Neuroscience JO - Nature Reviews Neuroscience JA - Nat Rev Neurosci Y1 - 2003/10// VL - 4 IS - 10 SP - 840 EP - 846 CY - United Kingdom PB - Nature Publishing Group SN - 1471-003X AD - Casebeer, William D., US Air Force Academy, HQ USAFA/DFPY, US Air Force Academy, 2354 Fairchild Drive, Suite 1A10, CO, US, 80840 N1 - Accession Number: 2004-10646-004. PMID: 14523383 Partial author list: First Author & Affiliation: Casebeer, William D.; US Air Force Academy, HQ USAFA/DFPY, CO, US. Release Date: 20040628. Correction Date: 20130121. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Brain; Cognition; Cognitive Processes; Morality; Neural Development. Classification: Neuropsychology & Neurology (2520). Population: Human (10). Methodology: Literature Review. References Available: Y. Page Count: 7. Issue Publication Date: Oct, 2003. AB - Identifying the neural mechanisms of moral cognition is especially difficult. In part, this is because moral cognition taps multiple cognitive sub-processes, being a highly distributed, whole-brain affair. The assumptions required to make progress in identifying the neural constituents of moral cognition might simplify morally salient stimuli to the point that they no longer activate the requisite neural architectures, but the right experiments can overcome this difficulty. The current evidence allows us to draw a tentative conclusion: the moral psychology required by virtue theory is the most neurobiologically plausible. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - moral cognition KW - neural mechanisms KW - cognitive processes KW - brain KW - 2003 KW - Brain KW - Cognition KW - Cognitive Processes KW - Morality KW - Neural Development KW - 2003 DO - 10.1038/nrn1223 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-10646-004&site=ehost-live&scope=site UR - William.casebeer@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2003-09115-007 AN - 2003-09115-007 AU - Ree, Malcolm James AU - Carretta, Thomas R. AU - Earles, James A. T1 - Salvaging construct equivalence through equating. JF - Personality and Individual Differences JO - Personality and Individual Differences JA - Pers Individ Dif Y1 - 2003/10// VL - 35 IS - 6 SP - 1293 EP - 1305 CY - Netherlands PB - Elsevier Science SN - 0191-8869 AD - Ree, Malcolm James, Our Lady of the Lake University, 411 S.W. 24th Street, San Antonio, TX, US, 78207 N1 - Accession Number: 2003-09115-007. Partial author list: First Author & Affiliation: Ree, Malcolm James; Our Lady of the Lake University, San Antonio, TX, US. Release Date: 20031110. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Factor Analysis; Score Equating; Statistical Analysis; Test Validity. Classification: Statistics & Mathematics (2240). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Scholastic Aptitude Test (SAT). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 13. Issue Publication Date: Oct, 2003. AB - Turban, Sanders, Francis, and Osburn (1989) provided a two-step procedure for selecting a replacement for a currently used test without an expensive validation study. The two steps are confirmatory factor analysis and impact analysis. We evaluated this two-step procedure and found that it was possible to apply it and find that the replacement test was not acceptable. We provide an example of just such a negative outcome that was salvaged by the extra step of equipercentile equating. This step, added to Turban et al., required no additional investment other than an equating analysis on the extant data. We caution that equating does not create construct equivalence, but is a necessary procedure when tests measure identical constructs with differing distributional shapes. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - construct equivalence KW - equating KW - confirmatory factor analysis KW - impact analysis KW - 2003 KW - Factor Analysis KW - Score Equating KW - Statistical Analysis KW - Test Validity KW - 2003 DO - 10.1016/S0191-8869(02)00350-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-09115-007&site=ehost-live&scope=site UR - reemal@lake.ollusa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Lee, S.-H. AU - Reeves, J. M. AU - Wilson, J. C. AU - Hunton, D. E. AU - Viggiano, A. A. AU - Miller, T. M. AU - Ballenthin, J. O. AU - Lait, L R. T1 - Particle Formation by Ion Nucleation in the UpperTroposphere and Lower Stratosphere. JO - Science JF - Science Y1 - 2003/09/26/ VL - 301 IS - 5641 M3 - Article SP - 1886 EP - 1889 SN - 00368075 AB - Unexpectedly high concentrations of ultrafine particles were observed over a wide range of latitudes in the upper troposphere and lower stratosphere. Particle number concentrations and size distributions simulated by a numerical model of ion-induced nucleation, constrained by measured thermodynamic data and observed atmospheric key species, were consistent with the observations. These findings indicate that, at typical upper troposphere and lower stratosphere conditions, particles are formed by this nucleation process and grow to measurable sizes with sufficient sun exposure and low preexisting aerosol surface area. Ion-induced nucleation is thus a globally important source of aerosol particles, potentially affecting cloud formation and radiative transfer. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Troposphere KW - Stratosphere KW - Thermodynamics KW - Nucleation N1 - Accession Number: 11062470; Lee, S.-H. 1; Email Address: shanlee@du.edu; Reeves, J. M. 1; Wilson, J. C. 1; Hunton, D. E. 2; Viggiano, A. A. 2; Miller, T. M. 2; Ballenthin, J. O. 2; Lait, L R. 3; Affiliations: 1: Department of Engineering, University of Denver, Denver, CO 80208, USA.; 2: Air Force Research Laboratory, Space Vehicle Directorate, Hanscom Air Force Base, MA 01731, USA.; 3: National Aeronautics and Space Administration, Coddard Space Flight Center, Creenbelt, MD 20771, USA.; Issue Info: 9/26/2003, Vol. 301 Issue 5641, p1886; Thesaurus Term: Troposphere; Thesaurus Term: Stratosphere; Thesaurus Term: Thermodynamics; Subject Term: Nucleation; Number of Pages: 4p; Illustrations: 4 Graphs; Document Type: Article; Full Text Word Count: 3492 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=11062470&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 106711998 T1 - The future of medicine in the United States Air Force. AU - Carlton P Y1 - 2003/09/03/2003 Sep Suppl N1 - Accession Number: 106711998. Language: English. Entry Date: 20040312. Revision Date: 20150711. Publication Type: Journal Article. Supplement Title: 2003 Sep Suppl. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 2984771R. KW - Military Medicine -- Trends KW - Forecasting KW - Hospitals, Military KW - Military Personnel KW - United States SP - 37 EP - 40 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 168 IS - 9 CY - Bethesda, Maryland PB - AMSUS SN - 0026-4075 AD - Surgeon General, United States Air Force, Washington, DC U2 - PMID: 14527191. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106711998&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Bharat Bhushan AU - Paquet, Louise AU - Spain, Jim C. AU - Hawari, Jalal T1 - Biotransformation of 2,46,8,10,12-Hexanitro-2,4,6,8,10,12-Hexaazaisowurtzitane (CL-20) by Denitrifying Pseudomonas sp. Strain FA1. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2003/09// VL - 69 IS - 9 M3 - Article SP - 5216 EP - 5221 SN - 00992240 AB - The microbial and enzymatic degradation of a new energetic compound, 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12hexaazaisowurtzitane (CL-20), is not well understood. Fundamental knowledge about the mechanism of microbial degradation of CL-20 is essential to allow the prediction of its fate in the environment. In the present study, a CL-20-degrading denitrifying strain capable of utilizing CL-20 as the sole nitrogen source, Pseudomonas sp. strain FA1, was isolated from a garden soil. Studies with intact cells showed that aerobic conditions were required for bacterial growth and that anaerobic conditions enhanced CL-20 biotransformation. An enzyme(s) involved in the initial biotransformation of CL-20 was shown to be membrane associated and NADH dependent, and its expression was up-regulated about 2.2-fold in CL-20-induced cells. The rates of CL-20 biotransformation by the resting cells and the membrane-enzyme preparation were 3.2 ± 0.1 nmol h[sup -1] mg of cell biomass[sup -1] and 11.5 ± 0.4 nmol h[sup -1] mg of protein[sup -1], respectively, under anaerobic conditions. In the membrane-enzyme-catalyzed reactions, 2.3 nitrite ions (NO[sup -, sub 2]), 1.5 molecules of nitrous oxide (N[sub 2]O), and 1.7 molecules of formic acid (HCOOH) were produced per reacted CL-20 molecule. The membrane-enzyme preparation reduced nitrite to nitrous oxide under anaerobic conditions. A comparative study of native enzymes, deflavoenzymes, and a reconstituted enzyme(s) and their subsequent inhibition by diphenyliodonium revealed that biotransformation of CL-20 is catalyzed by a membrane-associated flavoenzyme. The latter catalyzed an oxygen-sensitive one-electron transfer reaction that caused initial N denitration of CL-20. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Microbial growth KW - Biodegradation N1 - Accession Number: 10961023; Bharat Bhushan 1; Paquet, Louise 1; Spain, Jim C. 2; Hawari, Jalal 1; Email Address: jalal.hawari@nrc.ca; Affiliations: 1: Biotechnology Research Institute, National Research Council of Canada; 2: U.S. Air Force Research Laboratory, Florida; Issue Info: Sep2003, Vol. 69 Issue 9, p5216; Thesaurus Term: Microbial growth; Thesaurus Term: Biodegradation; Number of Pages: 6p; Illustrations: 1 Diagram, 3 Charts, 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=10961023&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 106723125 T1 - Muscle energy technique in patients with acute low back pain: a pilot clinical trial. AU - Wilson E AU - Payton O AU - Donegan-Shoaf L AU - Dec K Y1 - 2003/09//2003 Sep N1 - Accession Number: 106723125. Language: English. Entry Date: 20040416. Revision Date: 20150819. Publication Type: Journal Article; clinical trial; equations & formulas; pictorial; research; tables/charts. Journal Subset: Allied Health; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. Instrumentation: Oswestry Disability Index (ODI). NLM UID: 7908150. KW - Manual Therapy -- Methods KW - Low Back Pain -- Therapy KW - Functional Status KW - Treatment Outcomes KW - Prospective Studies KW - Pilot Studies KW - Male KW - Female KW - Random Assignment KW - Descriptive Statistics KW - Functional Assessment KW - Clinical Assessment Tools KW - Neuromuscular Facilitation -- Education KW - Patient Education KW - Muscle Strengthening KW - Therapeutic Exercise KW - Two-Tailed Test KW - T-Tests KW - Statistical Significance KW - Pretest-Posttest Design KW - Reliability and Validity KW - Adult KW - Range of Motion -- Evaluation KW - Flexion -- Evaluation KW - Posture -- Evaluation KW - Body Weights and Measures KW - Rotation KW - Double-Blind Studies KW - Mathematics KW - Human SP - 502 EP - 512 JO - Journal of Orthopaedic & Sports Physical Therapy JF - Journal of Orthopaedic & Sports Physical Therapy JA - J ORTHOP SPORTS PHYS THER VL - 33 IS - 9 CY - La Crosse, Wisconsin PB - American Physical Therapy Association, Orthopaedic Section AB - STUDY DESIGN: A prospective, pilot clinical trial. OBJECTIVE: Examining the outcomes of Muscle Energy Technique (MET) in patients with acute low back pain. BACKGROUND: MET is commonly used to treat patients with acute low back pain. No randomized controlled trials examining the outcomes of this treatment in symptomatic populations has been reported in the literature. METHODS AND MEASURES: Ten men and 9 women diagnosed with acute low back pain were randomly assigned with stratification to 1 of 2 treatment groups. Patients were matched according to age, gender, and initial Oswestry score. The control group received supervised neuromuscular re-education and resistance training while the experimental group received the same exercises coupled with MET. Both groups received the selected treatment 8 times over a 4-week period (2 times per week). Patients completed an Oswestry Disability Index on their first and eighth visits and change scores were calculated. RESULTS: A 2-tailed t test (P < .05) demonstrated a statistically significant difference with the experimental group showing greater improvement in the Oswestry Disability Index score than the control group. CONCLUSION: MET combined with supervised motor control and resistance exercises may be superior to neuromuscular re-education and resistance training for decreasing disability and improving function in patients with acute low back pain. SN - 0190-6011 AD - Director, Cadet Physical Therapy Clinic, 10th Medical Group, United States Air Force Academy, 4102 Pinion Drive, Suite 100, USAF Academy, CO 80840-2502; jdjewilson@adelphia.net U2 - PMID: 14524509. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106723125&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Mayberry, C.S. AU - Reinhardt, K.C. AU - Kreifels, T.L. T1 - Monolithic crystalline multijunction solar cell development and analysis at the US Air Force research laboratory JO - Renewable Energy: An International Journal JF - Renewable Energy: An International Journal Y1 - 2003/09// VL - 28 IS - 11 M3 - Article SP - 1729 SN - 09601481 AB - As satellite payload electrical power system requirements continue to grow, satellite systems employing flat panel arrays have reached limits set by either on-orbit dynamics that limit the size and shape of the deployed array, mass constraints set by the launch vehicle, or by the limits set by the volume constraints of the launch shroud. This has caused several satellite programs to approach power margin limits early in the design cycle, and to either compromise on satellite capabilities or perform costly redesigns. A very leveraging parameter for raising satellite power levels and reducing costs is the efficiency of the solar cells employed by satellite systems. State of the art efficiencies have reached 26.5% efficiency at load, and 30.1% for prototype cells, and solar arrays using GaAs based multijunction solar cells have achieved deployed solar array power densities of 70 W/kg and stowed volume power densities of 8 kW/m3. A simplified approach to the unwieldy dark current electrical analysis of multijunction solar cells has been developed, correlated with the performance of dual and triple junction solar cells, and explains ideality factors and reverse saturation currents that appear large. It was found that introducing a fourth junction with modest performance could raise the efficiency of multijunction solar cells to 31.5% efficiency at load, raise total power levels to 22 kW, raise the power densities to 100 W/kg and 9 kW/m3 with no impact to the configuration or operation of satellite solar arrays. [Copyright &y& Elsevier] AB - Copyright of Renewable Energy: An International Journal is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Solar cells KW - Solar energy N1 - Accession Number: 9402304; Mayberry, C.S. 1; Email Address: mayberry@plk.af.mil; Reinhardt, K.C. 1; Kreifels, T.L. 2; Affiliations: 1: Spacecraft Component Technologies Branch, Air Force Research Laboratory, AFRL/VSSV Space Vehicles Directorate , 87117-5776 Kirtland Air Force Base, NM, USA; 2: Space and Aeronautics Technology Division, Jackson and Tull, 87106 Albuquerque, NM, USA; Issue Info: Sep2003, Vol. 28 Issue 11, p1729; Thesaurus Term: Solar cells; Thesaurus Term: Solar energy; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 221114 Solar Electric Power Generation; Number of Pages: 12p; Document Type: Article L3 - 10.1016/S0960-1481(02)00215-X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=9402304&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2003-09854-002 AN - 2003-09854-002 AU - Kyllonen, Patrick C. AU - Chaiken, Scott T1 - Dynamic Spatial Ability and Psychomotor Performance. T3 - Spatial Ability JF - International Journal of Testing JO - International Journal of Testing Y1 - 2003/09// VL - 3 IS - 3 SP - 233 EP - 249 CY - US PB - Lawrence Erlbaum SN - 1530-5058 SN - 1532-7574 AD - Kyllonen, Patrick C., Educational Testing Service, (MS16-R), Rosedale Road, Princeton, NJ, US, 08541 N1 - Accession Number: 2003-09854-002. Partial author list: First Author & Affiliation: Kyllonen, Patrick C.; Educational Testing Service, Princeton, NJ, US. Other Publishers: Taylor & Francis. Release Date: 20040913. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Perceptual Motor Processes; Spatial Ability. Classification: Visual Perception (2323). Population: Human (10). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 17. Issue Publication Date: Sep, 2003. AB - Dynamic spatial ability is one's ability to estimate when a moving object will reach a destination, or one's skill in making time-to-contact (TTC) judgments. In 2 studies, we investigated the nature of dynamic spatial ability and its role in psychomotor (PM) task performance. In the first study, 405 basic military trainees were given both spatial and nonspatial versions of TTC and comparative arrival-time tasks, and we found that the spatial and nonspatial versions of the tasks were more highly correlated than the spatial tasks were to each other, suggesting that a timing, rather than a spatial, mechanism underlies performance of dynamic spatial tasks. In the second study with 376 military trainees, we found that performance on a set of PM tasks was predicted by a general working-memory (WM) Capacity factor (r = .45) and an orthogonal Temporal Processing (Tp) factor (r = .55), suggesting the importance of the dynamic spatial, or of the TP factor, in many real-world activities. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - dynamic spatial ability KW - psychomotor task performance KW - 2003 KW - Perceptual Motor Processes KW - Spatial Ability KW - 2003 DO - 10.1207/S15327574IJT0303_3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-09854-002&site=ehost-live&scope=site UR - pkyllonen@ets.org DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2003-10601-003 AN - 2003-10601-003 AU - Wilson, Glenn F. AU - Russell, Chris A. T1 - Operator Functional State Classification Using Multiple Psychophysiological Features in an Air Traffic Control Task. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2003///Fal 2003 VL - 45 IS - 3 SP - 381 EP - 389 CY - US PB - Human Factors & Ergonomics Society SN - 0018-7208 SN - 1547-8181 AD - Wilson, Glenn F., AFRL/HECP, 2255 H St., Wright-Patterson AFB, OH, US, 45504-7022 N1 - Accession Number: 2003-10601-003. PMID: 14702990 Partial author list: First Author & Affiliation: Wilson, Glenn F.; U.S. Air Force Research Laboratory, OH, US. Other Publishers: Sage Publications. Release Date: 20040809. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aerospace Personnel; Air Traffic Control; Human Machine Systems; Neural Networks; Task Complexity. Minor Descriptor: Human Channel Capacity. Classification: Neuropsychological Assessment (2225); Working Conditions & Industrial Safety (3670). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Methodology: Empirical Study; Qualitative Study; Quantitative Study. References Available: Y. Page Count: 9. Issue Publication Date: Fal 2003. AB - We studied 2 classifiers to determine their ability to discriminate among 4 levels of mental workload during a simulated air traffic control task using psychophysiological measures. Data from 7 air traffic controllers were used to train and test artificial neural network and stepwise discriminant classifiers. Very high levels of classification accuracy were achieved by both classifiers. When the 2 task difficulty manipulations were tested separately, the percentage correct classifications were between 84% and 88%. Feature reduction using saliency analysis for the artificial neural networks resulted in a mean of 90% correct classification accuracy. Considering the data as a 2-class problem, acceptable load versus overload, resulted in almost perfect classification accuracies, with mean percentage correct of 98%. In applied situations, the most important distinction among operator functional states would be to detect mental overload situations. These results suggest that psychophysiological data are capable of such discriminations with high levels of accuracy. Potential applications of this research include test and evaluation of new and modified systems and adaptive aiding. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - classification accuracy KW - psychophysiological measures KW - artificial neural network KW - air traffic control KW - mental workload KW - 2003 KW - Aerospace Personnel KW - Air Traffic Control KW - Human Machine Systems KW - Neural Networks KW - Task Complexity KW - Human Channel Capacity KW - 2003 DO - 10.1518/hfes.45.3.381.27252 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-10601-003&site=ehost-live&scope=site UR - glenn.wilson@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2003-10601-006 AN - 2003-10601-006 AU - Colle, Herbert A. AU - Reid, Gary B. T1 - Spatial Orientation in 3-D Desktop Displays: Using Rooms for Organizing Information. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 2003///Fal 2003 VL - 45 IS - 3 SP - 424 EP - 435 CY - US PB - Human Factors & Ergonomics Society SN - 0018-7208 SN - 1547-8181 AD - Colle, Herbert A., Department of Psychology, Wright State University, Dayton, OH, US, 45435 N1 - Accession Number: 2003-10601-006. PMID: 14702993 Partial author list: First Author & Affiliation: Colle, Herbert A.; Department of Psychology, Wright State University, Dayton, OH, US. Other Publishers: Sage Publications. Release Date: 20040809. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Spatial Ability; Spatial Imagery; Spatial Learning; Spatial Organization; Spatial Orientation (Perception). Minor Descriptor: Cognitive Maps; Spatial Memory. Classification: Neuropsychological Assessment (2225); Visual Perception (2323). Population: Human (10). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 12. Issue Publication Date: Fal 2003. AB - Understanding how spatial knowledge is acquired is important for spatial navigation and for improving the design of 3-D perspective interfaces. Configural spatial knowledge of object locations inside rooms is learned rapidly and easily (Colle & Reid, 1998), possibly because rooms afford local viewing in which objects are directly viewed or, alternatively, because of their structural features. The local viewing hypothesis predicts that the layout of objects outside of rooms also should be rapidly acquired when walls are removed and rooms are sufficiently close that participants can directly view and identify objects. It was evaluated using pointing and sketch map measures of configural knowledge with and without walls by varying distance, lighting levels, and observation instructions. Although within-room spatial knowledge was uniformly good, local viewing was not sufficient for improving spatial knowledge of objects in different rooms. Implications for navigation and 3-D interface design are discussed. Actual or potential applications of this research include the design of user interfaces, especially interfaces with 3-D displays. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - spatial knowledge KW - spatial orientation KW - spatial navigation KW - object locations KW - 3-D desktop displays KW - information organization KW - perspective interfaces KW - local viewing KW - structural features KW - rooms KW - 2003 KW - Spatial Ability KW - Spatial Imagery KW - Spatial Learning KW - Spatial Organization KW - Spatial Orientation (Perception) KW - Cognitive Maps KW - Spatial Memory KW - 2003 DO - 10.1518/hfes.45.3.424.27257 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-10601-006&site=ehost-live&scope=site UR - herbert.colle@wright.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2003-06777-007 AN - 2003-06777-007 AU - Mowle, Thomas S. T1 - Worldviews in foreign policy: Realism, liberalism, and external conflict. JF - Political Psychology JO - Political Psychology JA - Polit Psychol Y1 - 2003/09// VL - 24 IS - 3 SP - 561 EP - 592 CY - United Kingdom PB - Blackwell Publishing SN - 0162-895X SN - 1467-9221 AD - Mowle, Thomas S., United States Air Force Academy, USAFA/DFPS, 2354 Fairchild Hall, Suite 6L112, USAFA, CO, US, 80840 N1 - Accession Number: 2003-06777-007. Partial author list: First Author & Affiliation: Mowle, Thomas S.; United States Air Force Academy, CO, US. Other Publishers: Wiley-Blackwell Publishing Ltd. Release Date: 20030811. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Conference Information: International Studies Association annual meeting, May, 1996, San Diego, CA, US. Conference Note: A much earlier version of this article was presented at the aforementioned meeting. Major Descriptor: Conflict; Foreign Policy Making; International Relations; Political Liberalism; World View. Minor Descriptor: Realism (Philosophy); Theories. Classification: Political Processes & Political Issues (2960). Population: Human (10). Location: Canada; India; US. Methodology: Empirical Study. References Available: Y. Page Count: 32. Issue Publication Date: Sep, 2003. AB - International relations studies have been unable to determine whether realist or liberal theories better fit state behavior in various situations, possibly because these studies have attributed motive and action to the states rather than to the decision-makers within them. This article develops a new, more direct approach to resolving this problem. Hypotheses were tested regarding conditions under which decision-makers are likely to articulate a problem representation consistent with liberal or realist elements of a worldview. This was done by content analysis of statements about 36 foreign conflicts by the governments of three 'bystander' nations--the United States, Canada, and India--over a 16-year period. The findings indicate that systemic and situational factors are far more important than domestic factors. States tend to represent wars in congruence with liberalism primarily when their security is already assured by another power or when the conflict does not involve allies, rivals, or fellow democracies. Thus, most of the expectations of realism are supported at the psychological level. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - international relations theory KW - foreign policy KW - state behavior KW - world view KW - problem representation KW - realism KW - liberalism KW - external conflict KW - 2003 KW - Conflict KW - Foreign Policy Making KW - International Relations KW - Political Liberalism KW - World View KW - Realism (Philosophy) KW - Theories KW - 2003 DO - 10.1111/0162-895X.00341 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-06777-007&site=ehost-live&scope=site UR - tom.mowle@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2003-07939-002 AN - 2003-07939-002 AU - Brungart, Douglas S. AU - Kordik, Alexander J. AU - Simpson, Brian D. AU - McKinley, Richard L. T1 - Auditory Localization in the Horizontal Plane with Single and Double Hearing Protection. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2003/09// VL - 74 IS - 9 SP - 937 EP - 946 CY - US PB - Aerospace Medical Assn SN - 0095-6562 AD - Brungart, Douglas S., Wright-Patterson Air Force Base, 2610 Seventh Street, Building 441, OH, US N1 - Accession Number: 2003-07939-002. PMID: 14503671 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Brungart, Douglas S.; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Release Date: 20040920. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Auditory Localization; Auditory Stimulation; Hearing Aids. Classification: Auditory & Speech Perception (2326). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study; Qualitative Study. References Available: Y. Page Count: 10. Issue Publication Date: Sep, 2003. AB - Although single hearing protection devices such as earplugs or earmuffs are known to degrade sound localization, little is known about localization accuracy in double-hearing-protection conditions where both earplugs and earmuffs are worn at the same time. Listeners wearing earplugs, earmuffs, or a combination of earplugs and earmuffs were asked to localize short (250 ms) or long (continuous) pink noise signals originating from one of 24 loudspeaker locations in the horizontal plane. When single hearing protection was worn, localization was reasonably accurate in the left-right dimension even when the stimuli were short in duration. When double hearing protection was worn, however, left-right localization accuracy was poor even when the stimuli were on continuously. The severe disruptions in performance that occurred when earmuffs and earplugs were worn simultaneously suggest the influence of a mechanism such as bone conduction that does not normally interfere with localization when only a single hearing protection device is used. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - auditory localization KW - horizontal plane KW - single hearing protection KW - double hearing protection KW - hearing protection devices KW - earplugs KW - earmuffs KW - listeners KW - 2003 KW - Auditory Localization KW - Auditory Stimulation KW - Hearing Aids KW - 2003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-07939-002&site=ehost-live&scope=site UR - douglas.brungart@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Johnson, G. R. AU - Spain, J. C. T1 - Evolution of catabolic pathways for synthetic compounds: bacterial pathways for degradation of 2,4-dinitrotoluene and nitrobenzene. JO - Applied Microbiology & Biotechnology JF - Applied Microbiology & Biotechnology Y1 - 2003/08// VL - 62 IS - 2/3 M3 - Article SP - 110 EP - 123 PB - Springer Science & Business Media B.V. SN - 01757598 AB - The pathways for 2,4-dinitrotoluene (2,4-DNT) and nitrobenzene offer fine illustrations of how the ability to assimilate new carbon sources evolves in bacteria. Studies of the degradation pathways provide insight about two principal strategies for overcoming the metabolic block imposed by nitro- substituents on aromatic compounds. The 2,4-DNT pathway uses novel oxygenases for oxidative denitration and subsequent ring-fission. The nitrobenzene pathway links facile reduction of the nitro- substituent, a novel mutase enzyme, and a conserved operon encoding aminophenol degradation for mineralization of nitrobenzene. Molecular genetic analysis with comparative biochemistry reveals how the pathways were assembled in response to the recent appearance of the two synthetic chemicals in the biosphere. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Microbiology & Biotechnology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Dinitrotoluenes KW - Nitrobenzene KW - Bacteria KW - Aromatic compounds KW - Biochemistry KW - Chemicals N1 - Accession Number: 16694954; Johnson, G. R. 1; Spain, J. C. 1; Email Address: jim.spain@tyndall.af.mil; Affiliations: 1: Air Force Research Laboratory, United States Air Force, Tyndall Air Force Base, FL 32403, USA; Issue Info: Aug2003, Vol. 62 Issue 2/3, p110; Thesaurus Term: Dinitrotoluenes; Thesaurus Term: Nitrobenzene; Thesaurus Term: Bacteria; Thesaurus Term: Aromatic compounds; Subject Term: Biochemistry; Subject Term: Chemicals; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; Number of Pages: 14p; Illustrations: 2 Diagrams, 2 Charts; Document Type: Article L3 - 10.1007/s00253-003-1341-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=16694954&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Malyutenko, V.K. AU - Michailovskaya, K.V. AU - Yu Malyutenko, O. AU - Bogatyrenko, V.V. AU - Snyder, D.R. T1 - Infrared dynamic scene simulating device based on light down-conversion. JO - IEE Proceedings -- Optoelectronics JF - IEE Proceedings -- Optoelectronics Y1 - 2003/08// VL - 150 IS - 4 M3 - Article SP - 391 EP - 394 SN - 13502433 AB - Studies dynamic infrared scene projectors (DISP), devices used for the evaluation of electro-optical seekers and thermal imaging cameras. Down-conversion approach for DISP; Germanium screen in the 8-12-micrometer spectral range. KW - PROJECTORS KW - INFRARED photography KW - OPTOELECTRONICS N1 - Accession Number: 11293365; Malyutenko, V.K. 1; Michailovskaya, K.V. 1; Yu Malyutenko, O. 1; Bogatyrenko, V.V. 1; Snyder, D.R. 2; Affiliations: 1: Institute of Seminconductor Physics, Ukraine; 2: Air Force Research Laboratory, USA; Issue Info: Aug2003, Vol. 150 Issue 4, p391; Subject Term: PROJECTORS; Subject Term: INFRARED photography; Subject Term: OPTOELECTRONICS; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=11293365&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Bertin, John J. AU - Cummings, Russell M. T1 - Fifty years of hypersonics: where we've been, where we're going JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences J1 - Progress in Aerospace Sciences PY - 2003/08// Y1 - 2003/08// VL - 39 IS - 6/7 M3 - Article SP - 511 SN - 03760421 AB - Hypersonic flight has been with us since 22 September 1963, when Robert M. White flew the North American X-15 at 4520 mph at an altitude of 354,200 ft—a Mach number of 6.7! This remarkable achievement was accomplished over six decades due to intensive research and development by a large number of scientists and engineers. In spite of that momentous achievement, designers have found the hypersonic environment to be harsh and non-forgiving. New programs since the 1960s have often uncovered the unknown unknowns, usually the hard way—early flights of new systems have often revealed problems of which the designers were unaware. Such problems include: the ineffectiveness of the body flap for the Space Shuttle Orbiter, the viscous/inviscid interactions produced by the umbilical fairings that damaged the conical section tile protection system of the Gemini Capsule, and the shock/shock interaction that damaged the X-15A-2 when it carried the hypersonic ramjet experiment. In order to continue to make advances in hypersonic flight a sustained and visionary effort is essential to generate required knowledge and technology. In order to better prepare for future developments in hypersonic flight, this article reviews the advances made within the past 50 years and then looks into the future, not just for new technological developments, but for new ways of thinking about the unknown challenges that lie ahead. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERSONIC planes KW - AERODYNAMICS KW - NORTH America N1 - Accession Number: 11041318; Source Information: Aug2003, Vol. 39 Issue 6/7, p511; Subject Term: HYPERSONIC planes; Subject Term: AERODYNAMICS; Subject Term: ; Geographic Subject: NORTH America; Geographic Subject: ; Number of Pages: 26p; ; Document Type: Article; L3 - 10.1016/S0376-0421(03)00079-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=11041318&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 106710651 T1 - College coaches corner. Learning from each other: flexibility training. AU - Hedrick A AU - Bennett S AU - Rogers R AU - Dahoda J Y1 - 2003/08//2003 Aug N1 - Accession Number: 106710651. Language: English. Entry Date: 20040312. Revision Date: 20150818. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletic Training -- Methods KW - Pliability -- Education KW - Athletes, College KW - Stretching KW - Agility SP - 13 EP - 15 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 25 IS - 4 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106710651&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 106710657 T1 - Using uncommon implements in the training programs of athletes. AU - Hedrick A Y1 - 2003/08//2003 Aug N1 - Accession Number: 106710657. Language: English. Entry Date: 20040312. Revision Date: 20150711. Publication Type: Journal Article; pictorial; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletic Training Programs KW - Weight Lifting KW - Weight Lifting -- Equipment and Supplies SP - 18 EP - 22 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 25 IS - 4 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - Head Strength and Conditioning Coach, United States Air Force Academy UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106710657&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2003-07415-006 AN - 2003-07415-006 AU - Twenge, Jean M. AU - Campbell, W. Keith AU - Foster, Craig A. T1 - Parenthood and Marital Satisfaction: A Meta-Analytic Review. JF - Journal of Marriage and Family JO - Journal of Marriage and Family JA - J Marriage Fam Y1 - 2003/08// VL - 65 IS - 3 SP - 574 EP - 583 CY - US PB - National Council on Family Relations SN - 0022-2445 SN - 1741-3737 AD - Twenge, Jean M., Department of Psychology, San Diego State University, 5500 Campanile Drive, San Diego, CA, US, 92182-4611 N1 - Accession Number: 2003-07415-006. Other Journal Title: Journal of Marriage and the Family; Living; Marriage and Family Living. Partial author list: First Author & Affiliation: Twenge, Jean M.; Department of Psychology, San Diego State University, San Diego, CA, US. Other Publishers: Wiley-Blackwell Publishing Ltd. Release Date: 20040719. Correction Date: 20120326. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Marital Satisfaction; Marriage; Parenthood Status. Minor Descriptor: Parents. Classification: Marriage & Family (2950). Population: Human (10); Male (30); Female (40). Age Group: Childhood (birth-12 yrs) (100); Adulthood (18 yrs & older) (300). Methodology: Meta Analysis. References Available: Y. Page Count: 10. Issue Publication Date: Aug, 2003. AB - This meta-analysis finds that parents report lower marital satisfaction compared with nonparents (d = -.19, r = -.10). There is also a significant negative correlation between marital satisfaction and number of children (d = -.13, r = -.06). The difference in marital satisfaction is most pronounced among mothers of infants (38% of mothers of infants have high marital satisfaction, compared with 62% of childless women). For men, the effect remains similar across ages of children. The effect of parenthood on marital satisfaction is more negative among high socioeconomic groups, younger birth cohorts, and in more recent years. The data suggest that marital satisfaction decreases after the birth of a child due to role conflicts and restriction of freedom. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - marital satisfaction KW - parenthood KW - marriage KW - children KW - 2003 KW - Marital Satisfaction KW - Marriage KW - Parenthood Status KW - Parents KW - 2003 DO - 10.1111/j.1741-3737.2003.00574.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-07415-006&site=ehost-live&scope=site UR - jtwenge@mail.sdsu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2003-07549-008 AN - 2003-07549-008 AU - Jones, Keith S. AU - Middendorf, Matthew AU - McMillan, Grant R. AU - Calhoun, Gloria AU - Warm, Joel T1 - Comparing mouse and steady-state visual evoked response-based control. T3 - Human-computer interaction with mobile devices JF - Interacting with Computers JO - Interacting with Computers JA - Interact Comput Y1 - 2003/08// VL - 15 IS - 4 SP - 603 EP - 621 CY - Netherlands PB - Elsevier Science SN - 0953-5438 SN - 1873-7951 AD - Jones, Keith S., Department of Psychology, Kansas State University, 1100 Mid Campus Drive, Manhattan, KS, US, 66506 N1 - Accession Number: 2003-07549-008. Partial author list: First Author & Affiliation: Jones, Keith S.; Department of Psychology, University of Cincinnati, Cincinnati, OH, US. Other Publishers: Oxford University Press. Release Date: 20040705. Correction Date: 20160428. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Computer Peripheral Devices; Human Computer Interaction; Technology; Visual Evoked Potentials. Minor Descriptor: Electroencephalography. Classification: Engineering & Environmental Psychology (4000). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 19. Issue Publication Date: Aug, 2003. AB - Future computers will be more mobile, which will require new interaction methods. Accordingly, one might harness electroencephalographic (EEG) activity for computer control. Such devices exist, but all have limitations. Therefore, a novel EEG-based control was tested, which monitors the Steady-State Visual Evoked Response (SSVER). Selections are attempted by fixating a flickering target. A selection occurs if a SSVER is detected. To assess the device's relative performance, a mouse and the SS VER-based control were used to acquire targets of various sizes and distances. Accuracy and speed were measured. Overall, accuracy was poorer and acquisition times were longer with the SSVER-based control. However, the performance levels attained by the SSVER-based control might be adequate when manual controls are problematic, such as in assistive technology applications. In addition, in contrast to the mouse, SSVER-based acquisition times were insensitive to variations in target distance, which might serve as an operational advantage in certain applications. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - electroencephalographic activity KW - Steady-State Visual Evoked Response KW - mouse KW - computer control KW - 2003 KW - Computer Peripheral Devices KW - Human Computer Interaction KW - Technology KW - Visual Evoked Potentials KW - Electroencephalography KW - 2003 DO - 10.1016/S0953-5438(03)00052-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-07549-008&site=ehost-live&scope=site UR - joel.warm@uc.edu UR - gloria.calhoun@wpafb.af.mil UR - grant.mcmillan@wpafb.af.mil UR - jonesks@ksu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Bechel, Vernon T. AU - Fredin, Mark B. AU - Donaldson, Steven L. AU - Kim, Ran Y. AU - Camping, John D. T1 - Effect of stacking sequence on micro-cracking in a cryogenically cycled carbon/bismaleimide composite JO - Composites: Part A, Applied Science & Manufacturing JF - Composites: Part A, Applied Science & Manufacturing Y1 - 2003/07// VL - 34 IS - 7 M3 - Article SP - 663 SN - 1359835X AB - An apparatus was developed to thermally cycle coupon-sized mechanical test specimens to −196 °C. Using this device, IM7/5250-4 carbon/bismaleimide cross-ply ([0/90]2S and [90/0/90/0/90/0/90/0/90]) and quasi-isotropic ([0/45/−45/90]S) laminates were submerged in liquid nitrogen (LN2) and returned to room temperature 400 times. Ply-by-ply micro-crack density (transverse cracks), micro-crack span, laminate modulus, and laminate strength were measured as a function of thermal cycles. The composite micro-cracked extensively in the surface plies followed by sparse micro-cracking of the inner plies. The tensile strength of the two blocked lay-ups (lay-ups with adjacent plies of the same orientation) decreased by 8.5% after 400 cycles. Sectioning of the samples revealed that the micro-cracks in the surface plies spanned the full width of the sample while many of the micro-cracks observed on the edge of the inner plies did not extend to the center of the samples, implying that a rectangular specimen with exposed free edges may result in a significantly different micro-crack density than a sample without free edges. [Copyright &y& Elsevier] AB - Copyright of Composites: Part A, Applied Science & Manufacturing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TESTING KW - MECHANICAL ability KW - LAMINATED materials KW - A. Carbon fiber KW - Bismaleimide resin KW - Cryogenic cycling KW - Micro-cracking N1 - Accession Number: 9906572; Bechel, Vernon T. 1; Email Address: vernon.bechel@wpafb.af.mil; Fredin, Mark B. 1; Donaldson, Steven L. 1; Kim, Ran Y. 2; Camping, John D. 2; Affiliations: 1: Air Force Research Laboratory, Wright Patterson AFB, OH 45433, USA; 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA; Issue Info: Jul2003, Vol. 34 Issue 7, p663; Thesaurus Term: TESTING; Subject Term: MECHANICAL ability; Subject Term: LAMINATED materials; Author-Supplied Keyword: A. Carbon fiber; Author-Supplied Keyword: Bismaleimide resin; Author-Supplied Keyword: Cryogenic cycling; Author-Supplied Keyword: Micro-cracking; Number of Pages: 10p; Document Type: Article L3 - 10.1016/S1359-835X(03)00054-X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=9906572&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - O'Loughlin, Edward J. AU - Kemner, Kenneth M. AU - Burris, David R. T1 - Effects of Ag[sup I], Au[sup III], and Cu[sup II] on the Reductive Dechlorination of Carbon Tetrachloride by Green Rust. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2003/07//7/1/2003 VL - 37 IS - 13 M3 - Article SP - 2905 EP - 2912 SN - 0013936X AB - Green rusts (GRs), mixed iron(II)/iron(III) hydroxide minerals found in many suboxic environments, have been shown to reduce a range of organic and inorganic contaminants, including several chlorinated hydrocarbons. Many studies have demonstrated the catalytic activity of transition metal species in the reduction of chlorinated hydrocarbons, suggesting the potential for enhanced reduction by GR in the presence of an appropriate transition metal catalyst. Reductive dechlorination of carbon tetrachloride (CT) was examined in aqueous suspensions of GR amended with Ag[sup I], Au[sup III], or Cu[sup II]. The CT reduction rates were greatly increased for systems amended with Cu[sup II], Au[sup III], and Ag[sup I] (listed in order of increasing rates) relative to GR alone. Observed intermediates and products included chloroform, dichloromethane, chloromethane, methane, acetylene, ethene, ethane, carbon monoxide, tetrachloroethene, and various nonchlorinated C[sub 3] and C[sub 4] compounds. Product distributions for the reductive dechlorination of CT were highly dependent on the transition metal used. A reaction pathway scheme is proposed in which CT is reduced primarily to methane and other nonchlorinated end products, largely through a series of one-electron reductions forming radicals and carbenes/carbenoids. Recently, X-ray absorption fine structure analysis of aqueous GR suspensions amended with Ag[sup I], Au[sup III], or Cu[sup II] showed that the metals were reduced to their zerovalent forms. A possible mechanism for CT reduction is the formation of a galvanic couple involving the zerovalent metal and GR, with reduction of CT occurring on the surface of the metal and GR serving as the bulk electron source. The enhanced reduction of CT by GR suspensions amended with Ag[sup I], Au[sup III], or Cu[sup II] may prove useful in the development of improved materials for remediation of chlorinated organic contaminants. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Iron KW - Carbon tetrachloride KW - Chlorination N1 - Accession Number: 10770363; O'Loughlin, Edward J. 1,2; Email Address: oloughlin@anl.gov; Kemner, Kenneth M. 2; Burris, David R. 1,3; Affiliations: 1: Air Force Research Laboratory, Florida; 2: Environmental Research Division, Argonne National Laboratory; 3: Integrated Science and Technology, Inc., Florida; Issue Info: 7/1/2003, Vol. 37 Issue 13, p2905; Thesaurus Term: Iron; Thesaurus Term: Carbon tetrachloride; Subject Term: Chlorination; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 8p; Illustrations: 1 Diagram, 2 Charts, 8 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=10770363&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Lacy, Seth L. AU - Bernstein, Dennis S. T1 - Subspace Identification With Guaranteed Stability Using Constrained Optimization. JO - IEEE Transactions on Automatic Control JF - IEEE Transactions on Automatic Control Y1 - 2003/07// VL - 48 IS - 7 M3 - Article SP - 1259 EP - 1263 SN - 00189286 AB - In system identification, the true system is often known to be stable. However, due to finite sample constraints, modeling errors, plant disturbances and measurement noise, the identified model may be unstable. We present a constrained optimization method to ensure asymptotic stability of the identified model in the context of subspace identification methods. In subspace identification, we first obtain an estimate of the state sequence or extended observability matrix and then solve a least squares optimization problem to estimate the system parameters. To ensure asymptotic stability of the identified model, we write the least-squares optimization problem as a convex linear programming problem with mixed equality, quadratic, and positive-semidefinite constraints suitable for existing convex optimization codes such as SeDuMi. We present examples to illustrate the method and compare to existing approaches. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Automatic Control is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYSTEM identification KW - LINEAR systems N1 - Accession Number: 10920140; Lacy, Seth L. 1; Email Address: seth.lacy@kirtland.af.mil; Bernstein, Dennis S. 2; Email Address: dsbaero@umich.edu; Affiliations: 1: Air Force Research Laboratory, USA; 2: Aerospace Engineering Department, University of Michigan, USA; Issue Info: Jul2003, Vol. 48 Issue 7, p1259; Subject Term: SYSTEM identification; Subject Term: LINEAR systems; Number of Pages: 5p; Illustrations: 2 Charts, 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=10920140&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Brown, Gerald G. AU - Dell, Robert F. AU - Holtz, Heath AU - Newman, Alexandra M. T1 - How US Air Force Space Command Optimizes Long-Term Investment in Space Systems. JO - Interfaces JF - Interfaces Y1 - 2003/07//Jul/Aug2003 VL - 33 IS - 4 M3 - Article SP - 1 EP - 14 PB - INFORMS: Institute for Operations Research SN - 00922102 AB - United States Air Force Space Command spends billions of dollars each year acquiring and developing launch vehicles and space systems. The space systems in orbit must continually meet defensive and offensive requirements and remain interoperable over time. Space Command can launch additional space systems only if it has a launch vehicle of sufficient capability. Space planners using space and missile optimization analysis (SAMOA) consider a 24-year time horizon when determining which space assets and launch vehicles to fund and procure. A key tool within SAMOA is an integer linear program called the space command optimizer of utility toolkit (SCOUT) that Space Command uses for long-range planning. SCOUT gives planners insight into the annual funding profiles needed to meet Space Command's acquisition goals. The 1999 portfolio of 74 systems will cost about $310 billion and includes systems that can lift satellites into orbit; yield information on space, surface, and subsurface events, activities, and threats; and destroy terrestrial, airborne, and space targets. [ABSTRACT FROM AUTHOR] AB - Copyright of Interfaces is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARTIFICIAL satellites KW - MILITARY astronautics KW - SPACE control (Military science) KW - OUTER space KW - UNITED States KW - UNITED States. Air Force Space Command N1 - Accession Number: 17624393; Brown, Gerald G. 1; Email Address: gbrown@nps.navy.mil; Dell, Robert F. 1; Email Address: dell@nps.navy.mil; Holtz, Heath 2; Email Address: holtzhm@earthlink.net; Newman, Alexandra M. 3; Email Address: newman@mines.edu; Affiliations: 1: Operations Research Department, Naval Postgraduate School, Monterey, California 93943; 2: Air Force Material Command Directorate of Requirements, Office of Aerospace Studies, Kirtland AFB, New Mexico 87117-5776; 3: Division of Economics and Business, Colorado School of Mines, Golden, Colorado 80401; Issue Info: Jul/Aug2003, Vol. 33 Issue 4, p1; Thesaurus Term: ARTIFICIAL satellites; Subject Term: MILITARY astronautics; Subject Term: SPACE control (Military science); Subject Term: OUTER space; Subject: UNITED States ; Company/Entity: UNITED States. Air Force Space Command; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 14p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=17624393&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - HOSUR, M. V. AU - ADYA, M. AU - ALEXANDER, J. AU - JEELANI, S. AU - VAIDYA, U. AU - MAYER, A. T1 - Studies on Impact Damage Resistance of Affordable Stitched Woven Carbon/Epoxy Composite Laminates. JO - Journal of Reinforced Plastics & Composites JF - Journal of Reinforced Plastics & Composites Y1 - 2003/07// VL - 22 IS - 10 M3 - Article SP - 927 EP - 952 AB - This paper discusses the response of seven layer plain and satin weave carbon fabric reinforced composites fabricated using low-cost Vacuum Assisted Resin Infusion Molding (VARIM) process under low-velocity impact loading. Both stitched and unstitched laminates were tested at energy levels ranging 5-50 J using an instrumented drop-weight machine. A 3-cord Kevlar thread was used to stitch the laminate in two orthogonal grid patterns each at a 6mm pitch: one with 25.4mm and the other with 12.7mm grid. Damage due to impact loading was evaluated through ultrasonic nondestructive evaluation (NDE). Results of the study showed the effectiveness of stitching in containing the damage size with 12.7 mm grid stitch samples exhibiting the least damage. Further, satin weave fabric composites exhibit better impact resistance as compared to plain weave fabric composites. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Reinforced Plastics & Composites is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMPACT loads (Engineering) KW - LAMINATED materials KW - COMPOSITE materials KW - TEXTILES KW - WEAVING KW - ULTRASONIC testing KW - affordable manufacturing KW - damage resistance KW - low-velocity impact KW - stitching KW - ultrasonics KW - woven fabric composites N1 - Accession Number: 34244718; HOSUR, M. V. 1; Email Address: hosur@tusk.edu; ADYA, M. 1; ALEXANDER, J. 1; JEELANI, S. 1; VAIDYA, U. 2; MAYER, A. 3; Source Information: 2003, Vol. 22 Issue 10, p927; Subject: IMPACT loads (Engineering); Subject: LAMINATED materials; Subject: COMPOSITE materials; Subject: TEXTILES; Subject: WEAVING; Subject: ULTRASONIC testing; Author-Supplied Keyword: affordable manufacturing; Author-Supplied Keyword: damage resistance; Author-Supplied Keyword: low-velocity impact; Author-Supplied Keyword: stitching; Author-Supplied Keyword: ultrasonics; Author-Supplied Keyword: woven fabric composites; Number of Pages: 25p; Illustrations: 1 Black and White Photograph, 8 Diagrams, 6 Charts, 8 Graphs; Document Type: Article L3 - 10.1177/073168403027283 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=34244718&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Cummings, Russell M. AU - Forsythe, James R. AU - Morton, Scott A. AU - Squires, Kyle D. T1 - Computational challenges in high angle of attack flow prediction JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences J1 - Progress in Aerospace Sciences PY - 2003/07// Y1 - 2003/07// VL - 39 IS - 5 M3 - Article SP - 369 SN - 03760421 AB - Aircraft aerodynamics have been predicted using computational fluid dynamics for a number of years. While viscous flow computations for cruise conditions have become commonplace, the non-linear effects that take place at high angles of attack are much more difficult to predict. A variety of difficulties arise when performing these computations, including challenges in properly modeling turbulence and transition for vortical and massively separated flows, the need to use appropriate numerical algorithms if flow asymmetry is possible, and the difficulties in creating grids that allow for accurate simulation of the flowfield. These issues are addressed and recommendations are made for further improvements in high angle of attack flow prediction. Current predictive capabilities for high angle of attack flows are reviewed, and solutions based on hybrid turbulence models are presented. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - FLUID dynamics N1 - Accession Number: 9906235; Source Information: Jul2003, Vol. 39 Issue 5, p369; Subject Term: AERODYNAMICS; Subject Term: FLUID dynamics; Subject Term: ; Number of Pages: 16p; ; Document Type: Article; L3 - 10.1016/S0376-0421(03)00041-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=9906235&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Haymond, Jeffrey AU - West, James E. AD - Office of Legislative Liaison, Washington, DC AD - US Air Force Academy T1 - Class Action Extraction? JO - Public Choice JF - Public Choice Y1 - 2003/07// VL - 116 IS - 1-2 SP - 91 EP - 108 SN - 00485829 N1 - Accession Number: 0661378; Keywords: Political; Securities; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 200309 N2 - Class action lawsuits as a vehicle of rent extraction is developed as an extension of political/legislative rent extraction theory. An event study is performed on thirty firms in which a securities class action lawsuit is filed and subsequently resolved by retraction, settlement, or legal verdict. The data set is found to be consistent with rent having been extracted as a result of the class action lawsuit. KW - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior D72 KW - Business and Securities Law K22 KW - Litigation Process K41 L3 - http://link.springer.com/journal/volumesAndIssues/11127 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0661378&site=ehost-live&scope=site UR - http://link.springer.com/journal/volumesAndIssues/11127 DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Kelsall, Robert W. AU - Soref, Richard A. T1 - Silicon-Germanium Quantum-Cascade Lasers. JO - International Journal of High Speed Electronics & Systems JF - International Journal of High Speed Electronics & Systems Y1 - 2003/06// VL - 13 IS - 2 M3 - Article SP - 547 SN - 01291564 AB - The prospects and advantages of silicon germanium quantum cascade lasers are discussed, from both physical and technological perspectives. A range of Si/SiGe intersubband laser configurations are discussed, for both edge and surface emission. Recent experimental activity on mid- and far-infrared devices is reviewed, and the value of detailed theoretical tools for heterostructure design is highlighted. Steps towards silicon optoelectronic integration are also considered. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of High Speed Electronics & Systems is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON KW - GERMANIUM KW - LASERS KW - OPTOELECTRONICS KW - intersubband KW - Silicon optoelectronics KW - terahertz KW - virtual substrate N1 - Accession Number: 10630271; Kelsall, Robert W. 1; Soref, Richard A. 2; Affiliations: 1: School of Electronic and Electrical Engineering University of Leeds, Leeds LS2 9JT, UK.; 2: Sensors Directorate, Air Force Research Laboratory Hanscom Air Force Base, MA 01731-2909, USA.; Issue Info: Jun2003, Vol. 13 Issue 2, p547; Subject Term: SILICON; Subject Term: GERMANIUM; Subject Term: LASERS; Subject Term: OPTOELECTRONICS; Author-Supplied Keyword: intersubband; Author-Supplied Keyword: Silicon optoelectronics; Author-Supplied Keyword: terahertz; Author-Supplied Keyword: virtual substrate; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 27p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=10630271&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Andrew D. Katayama, Jake AU - Crooks, Steven M. T1 - Online Notes: Differential Effects of Studying Complete or Partial Graphically Organized Notes. JO - Journal of Experimental Education JF - Journal of Experimental Education J1 - Journal of Experimental Education PY - 2003///Summer2003 Y1 - 2003///Summer2003 VL - 71 IS - 4 M3 - Article SP - 293 EP - 312 SN - 00220973 AB - The authors investigated in this study the effects of two electronic notes conditions (complete vs. partial) and two testing conditions (immediate vs. delayed) on three types of tests (fact, structure, and application). A 2 × 2 factorial multivariate analysis of variance (MANOVA) yielded no significant main effects for notes conditions on the fact and structure tests. The results did show a significant main effect for notes conditions (partial > control) on the application test and for testing condition. Students tested immediately performed significantly better than those in the delayed condition on all three outcome measures. Results also show significant inter-actions between Notes Condition × Testing Condition on the structure and application tests. Implications and limitations of computerized notes are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Experimental Education is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIVARIATE analysis KW - EDUCATION -- Graphic methods KW - GRAPHIC organizers KW - TEACHING aids & devices N1 - Accession Number: 11453631; Source Information: Summer2003, Vol. 71 Issue 4, p293; Subject Term: MULTIVARIATE analysis; Subject Term: EDUCATION -- Graphic methods; Subject Term: GRAPHIC organizers; Subject Term: TEACHING aids & devices; Subject Term: ; Number of Pages: 20p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=trh&AN=11453631&site=ehost-live&scope=site DP - EBSCOhost DB - trh ER - TY - JOUR ID - 106850418 T1 - It's not always about curing. AU - Miller N A2 - Vernarec E Y1 - 2003/06// N1 - Accession Number: 106850418. Language: English. Entry Date: 20050507. Revision Date: 20150711. Publication Type: Journal Article; anecdote; pictorial. Journal Subset: Nursing; Peer Reviewed; USA. NLM UID: 20010080R. KW - Caring KW - Critical Care Nursing -- Psychosocial Factors KW - Critically Ill Patients -- Psychosocial Factors KW - Nurse-Patient Relations KW - Communication KW - Female KW - Inpatients KW - Intensive Care Units KW - Middle Age KW - Patient-Family Relations KW - Surgical Wound Infection KW - Ventilator Patients SP - 45 EP - 47 JO - RN JF - RN JA - RN VL - 66 IS - 6 CY - North Olmsted, Ohio PB - Advanstar Communications Inc. AB - While assigned to a 'nonresponsive' patient, this ICU nurse learned a profound lesson in caring. SN - 0033-7021 AD - Nurse, United States Air Force U2 - PMID: 12838902. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106850418&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Hussain, Saber M. AU - Frazier, John M. T1 - Involvement of apoptosis in hydrazine induced toxicity in rat primary hepatocytes JO - Toxicology in Vitro JF - Toxicology in Vitro Y1 - 2003/06// VL - 17 IS - 3 M3 - Article SP - 343 SN - 08872333 AB - The current study was undertaken to investigate the role of apoptosis in hydrazine induced hepatotoxicity. Hepatocytes were exposed to hydrazinium nitrate (HzN) at two doses (50 and 75 mM) for 2 h then placed in fresh HzN-free media and cultured for an additional 24 h. Post-exposure, cell viability was evaluated at several time points by lactate dehydrogenase (LDH) leakage and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) reduction. Markers of apoptosis (mitochondrial membrane potential, annexin binding, DNA fragmentation, caspase activation, and cytochrome c release) were measured 24 h post-exposure. The viability data showed time dependent increase in LDH leakage at 75 mM of HzN, with only a slight increase at 50 mM. MTT reduction showed a decrease in mitochondrial activity at both doses immediately after the 2 h continous exposure. However, MTT reduction returned to normal at 50 mM while at 75 mM, MTT reduction initially recovered but then deteriorated to approximately 50% of controls at 24 h post-exposure. Based on viability data, exposure to 50 mM HzN for 2 h is a marginally toxic dose while 75 mM is a significantly toxic dose. The results for apoptosis biomarkers showed a reduction in mitochondrial membrane potential, an increase in annexin binding, an increase in total caspase activity, moderate activation of caspase-3, and release of cytochrome c. However, the appearance of DNA fragmentation in HzN exposed cells was very low compared to positive controls (cadmium and cyclosporine). The possibility that HzN induces apoptosis without the involvement of DNA fragmentation can not be ruled out. The present results, overall, suggest that apoptosis may be a contributing factor in acute HzN toxicity. [Copyright &y& Elsevier] AB - Copyright of Toxicology in Vitro is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Apoptosis KW - Cell death KW - Cell membranes KW - DNA KW - Immunosuppressive agents KW - DNA fragmentation KW - Hepatocytes KW - Hydrazine KW - In vitro toxicity N1 - Accession Number: 9854740; Hussain, Saber M. 1; Email Address: saber.hussain@wpafb.af.mil; Frazier, John M. 2; Affiliations: 1: ManTech Environmental Technology, Inc. Dayton, OH 45437, USA; 2: Operational Toxicology Branch (AFRL/HEST), Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7400, USA; Issue Info: Jun2003, Vol. 17 Issue 3, p343; Thesaurus Term: Apoptosis; Thesaurus Term: Cell death; Thesaurus Term: Cell membranes; Subject Term: DNA; Subject Term: Immunosuppressive agents; Author-Supplied Keyword: DNA fragmentation; Author-Supplied Keyword: Hepatocytes; Author-Supplied Keyword: Hydrazine; Author-Supplied Keyword: In vitro toxicity; Number of Pages: 13p; Document Type: Article L3 - 10.1016/S0887-2333(03)00022-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=9854740&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2003-09104-001 AN - 2003-09104-001 AU - Katayama, Andrew D. AU - Crooks, Steven M. T1 - Outline notes: Differential effects of studying complete or partial graphically organized notes. JF - Journal of Experimental Education JO - Journal of Experimental Education JA - J Exp Educ Y1 - 2003///Sum 2003 VL - 71 IS - 4 SP - 293 EP - 312 CY - US PB - Heldref Publications SN - 0022-0973 SN - 1940-0683 AD - Katayama, Andrew D., United States Air Force Academy, HQ USAFA/DBFL, USAF Academy, 2354 Fairchild Drive, 6L101B, CO, US, 80840-6228 N1 - Accession Number: 2003-09104-001. Partial author list: First Author & Affiliation: Katayama, Andrew D.; United States Air Force Academy, HQ USAFA/DBFL, USAF Academy, CO, US. Other Publishers: Taylor & Francis. Release Date: 20040816. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Academic Achievement; Computer Assisted Instruction; Electronic Communication; Note Taking; Test Taking. Classification: Academic Learning & Achievement (3550). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Qualitative Study; Quantitative Study. References Available: Y. Page Count: 20. Issue Publication Date: Sum 2003. AB - The authors investigated in this study the effects of two electronic notes conditions (complete vs. partial) and two testing conditions (immediate vs. delayed) on three types of tests (fact, structure, and application). A 2 × 2 factorial multivariate analysis of variance (MANOVA) yielded no significant main effects for notes conditions on the fact and structure tests. The results did show a significant main effect for notes conditions (partial > control) on the application test and for testing condition. Students tested immediately performed significantly better than those in the delayed condition on all three outcome measures. Results also show significant interactions between Notes Condition × Testing Condition on the structure and application tests. Implications and limitations of computerized notes are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - note taking KW - electronic notes KW - graphic organizers KW - note taking benefits KW - online learning KW - 2003 KW - Academic Achievement KW - Computer Assisted Instruction KW - Electronic Communication KW - Note Taking KW - Test Taking KW - 2003 DO - 10.1080/00220970309602067 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-09104-001&site=ehost-live&scope=site UR - andrew.katayama@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2003-99062-001 AN - 2003-99062-001 AU - Bolia, Robert S. AU - Slyh, Raymond E. T1 - Perception of stress and speaking style for selected elements of the SUSAS database. JF - Speech Communication JO - Speech Communication JA - Speech Commun Y1 - 2003/06// VL - 40 IS - 4 SP - 493 EP - 501 CY - Netherlands PB - Elsevier Science SN - 0167-6393 AD - Bolia, Robert S., Air Force Research Laboratory (AFRL/HECP), 2255 H Street, Wright-Patterson Air Force Base, OH, US, 45433-7022 N1 - Accession Number: 2003-99062-001. Partial author list: First Author & Affiliation: Bolia, Robert S.; Air Force Research Laboratory(AFRL/HECP), OH, US. Release Date: 20031103. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Databases; Speech Characteristics; Speech Perception; Stress; Test Validity. Minor Descriptor: Classification (Cognitive Process); Independent Variables; Simulation; Syllables; Words (Phonetic Units). Classification: Psychophysiology (2560); Linguistics & Language & Speech (2720). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study; Qualitative Study. References Available: Y. Page Count: 9. Issue Publication Date: Jun, 2003. AB - The Speech Under Simulated and Actual Stress (SUSAS) database is a collection of utterances recorded under conditions of simulated or actual stress, the purpose of which is to allow researchers to study the affects of stress and speaking style on the speech waveform. The aim of the present investigation was to assess the perceptual validity of the simulated portion of the database by determining the extent to which listeners classify its utterances, according to their assigned labels. Seven listeners performed an eight-alternative, forced-choice response, judging whether monosyllabic or disyllabic words spoken by talkers from three different regional accent classes (Boston, General American, New York) were best classified as, clear, fast, loud, neutral, question, slow, or soft. Mean percentages of 'correct' judgments were analysed using a 3 (regional accent class) × 2 (number of syllables) × 8 (speaking style) repeated measures analysis of variance. Results indicate that, overall, listeners correctly classify the utterances only 58% of the time, and that the percentage of correct classifications varies as a function of all three independent variables. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - speaking style KW - stress perception KW - actual stress KW - Speech Under Simulated and Actual Stress KW - SUSAS KW - simulated stress KW - speech waveform KW - simulated database KW - utterances KW - listeners KW - 2003 KW - Databases KW - Speech Characteristics KW - Speech Perception KW - Stress KW - Test Validity KW - Classification (Cognitive Process) KW - Independent Variables KW - Simulation KW - Syllables KW - Words (Phonetic Units) KW - 2003 DO - 10.1016/S0167-6393(02)00129-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-99062-001&site=ehost-live&scope=site UR - robert.bolia@wpafb.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2003-03828-007 AN - 2003-03828-007 AU - Barlow, Cassie B. AU - Jordan, Mark AU - Hendrix, William H. T1 - Character assessment: An examination of leadership levels. JF - Journal of Business and Psychology JO - Journal of Business and Psychology JA - J Bus Psychol Y1 - 2003///Sum 2003 VL - 17 IS - 4 SP - 563 EP - 584 CY - Germany PB - Springer SN - 0889-3268 SN - 1573-353X AD - Barlow, Cassie B. N1 - Accession Number: 2003-03828-007. Partial author list: First Author & Affiliation: Barlow, Cassie B.; Air U, US. Release Date: 20030707. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Leadership Qualities; Management Personnel; Occupational Status; Personality Traits. Classification: Management & Management Training (3640). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. References Available: Y. Page Count: 22. Issue Publication Date: Sum 2003. AB - This paper discusses character assessment from a leadership level perspective. The organization studied is developing a leadership model for the next century. One of the leadership traits identified as essential was character. Approximately one thousand managers in the company were given two character assessment instruments via a Web-based medium. Significant differences were found between early-, mid-, and mature-level managers with an increasing trend in character traits across the levels. This research is consistent with Katz and Kahn's (1976) levels of leadership research. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - character attributes KW - leadership traits KW - managers KW - early level KW - mid level KW - mature level KW - leadership level KW - 2003 KW - Leadership Qualities KW - Management Personnel KW - Occupational Status KW - Personality Traits KW - 2003 DO - 10.1023/A:1023408403204 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-03828-007&site=ehost-live&scope=site UR - Cassie.Barlow@pentagon.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2003-10161-005 AN - 2003-10161-005 AU - Rapoport, Amnon AU - Stein, William E. AU - Parco, James E. AU - Nicholas, Thomas E. T1 - Equilibrium play and adaptive learning in a three-person centipede game. JF - Games and Economic Behavior JO - Games and Economic Behavior JA - Games Econ Behav Y1 - 2003/05// VL - 43 IS - 2 SP - 239 EP - 265 CY - Netherlands PB - Elsevier Science SN - 0899-8256 AD - Rapoport, Amnon, Department of Management and Policy, University of Arizona, 405 McClelland Hall, Tucson, AZ, US, 85721 N1 - Accession Number: 2003-10161-005. Partial author list: First Author & Affiliation: Rapoport, Amnon; Department of Management and Policy, University of Arizona, Tucson, AZ, US. Release Date: 20040816. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Adjustment; Costs and Cost Analysis; Decision Making; Games; Interpersonal Interaction. Minor Descriptor: Learning. Classification: Group & Interpersonal Processes (3020). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 27. Issue Publication Date: May, 2003. AB - The two-person centipede game is one of the most celebrated paradoxes of backward induction in complete information extensive form games. An experimental investigation of a three-person centipede game shows that the paradoxical results are strongly affected by the size of the stakes. When the number of players in the game is increased from two to three and the game is played for unusually high stakes with group composition being randomly changed from trial to trial, the paradox is considerably weakened as players approach equilibrium play with multiple iterations of the stage game. When the game is played with low stakes, there is no evidence for equilibrium play or learning across iterations of the stage game. An adaptive learning model that assumes updating of the individual probabilities of choice outperforms alternative static and dynamic models in accounting for the major results observed in the high-stake experiment. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - adaptive learning KW - centipede game KW - backward induction KW - stakes size KW - 2003 KW - Adjustment KW - Costs and Cost Analysis KW - Decision Making KW - Games KW - Interpersonal Interaction KW - Learning KW - 2003 DO - 10.1016/S0899-8256(03)00009-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-10161-005&site=ehost-live&scope=site UR - amnon@u.arizona.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Watson, K. A. AU - Lyons, K. M. AU - Donbar, J. M. AU - Carter, C. D. T1 - ON SCALAR DISSIPATION AND PARTIALLY PREMIXED FLAME PROPAGATION. JO - Combustion Science & Technology JF - Combustion Science & Technology Y1 - 2003/04// VL - 175 IS - 4 M3 - Article SP - 649 EP - 664 SN - 00102202 AB - Measurements of the scalar dissipation rate in the region immediately upstream of a lifted jet flame are presented. The scalar dissipation is determined in this isothermal region from a planar measurement of a two-dimensional conserved scalar (jet fluid) using laser Rayleigh scattering. Fields of the scalar dissipation rate are presented in addition to tabulated values for three different liftoff heights ( Re d =4800, 6400, and 8300). Scalar dissipation rates do not reach levels thought to cause extinction of the leading edge based on comparison with extinction data for counterflow diffusion flames. Additionally, results are presented on the axial flame propagation velocities relative to the jet flow. The data indicate that over the three flow conditions, the flame velocity relative to the flow is approximately constant during the case of a quasi-stationary lifted flame. In light of these findings, it is suggested that concepts involving partially premixed flame propagation, rather than those of critical scalar dissipation rate, are central to modern lifted flame stabilization models. [ABSTRACT FROM AUTHOR] AB - Copyright of Combustion Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Combustion KW - Diffusion KW - Simulation methods & models KW - Flame KW - Energy dissipation KW - flame stabilization KW - laser diagnostics KW - lifted flame KW - partially premixed combustion N1 - Accession Number: 15531299; Watson, K. A. 1; Lyons, K. M. 1; Email Address: Lyons@eos.ncsu.edu; Donbar, J. M. 2; Carter, C. D. 2; Affiliations: 1: North Carolina State University, Department of Mechanical and Aerospace Engineering, Raleigh, North Carolina, USA; 2: Air Force Research Laboratory, AFRL/PRA, Wright-Patterson Air Force Base, Ohio, USA; Issue Info: Apr2003, Vol. 175 Issue 4, p649; Thesaurus Term: Combustion; Thesaurus Term: Diffusion; Thesaurus Term: Simulation methods & models; Subject Term: Flame; Subject Term: Energy dissipation; Author-Supplied Keyword: flame stabilization; Author-Supplied Keyword: laser diagnostics; Author-Supplied Keyword: lifted flame; Author-Supplied Keyword: partially premixed combustion; Number of Pages: 16p; Illustrations: 6 Diagrams, 1 Chart; Document Type: Article L3 - 10.1080/00102200390196386 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=15531299&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Arthur Jr., Winfred AU - Bennett Jr., Winston AU - Edens, Pamela S. AU - Bell, Suzanne T. T1 - Effectiveness of Training in Organizations: A Meta-Analysis of Design and Evaluation Features. JO - Journal of Applied Psychology JF - Journal of Applied Psychology Y1 - 2003/04// VL - 88 IS - 2 M3 - Article SP - 234 EP - 245 PB - American Psychological Association SN - 00219010 AB - The authors used meta-analytic procedures to examine the relationship between specified training design and evaluation features and the effectiveness of training in organizations. Results of the meta-analysis revealed training effectiveness sample-weighted mean ds of 0.60 (k = 15, N = 936) for reaction criteria, 0.63 (k = 234, N = 15,014) for learning criteria, 0.62 (k = 122, N = 15,627) for behavioral criteria, and 0.62 (k = 26, N = 1,748) for results criteria. These results suggest a medium to large effect size for organizational training. In addition, the training method used, the skill or task characteristic trained, and the choice of evaluation criteria were related to the effectiveness of training programs. Limitations of the study along with suggestions for future research are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Psychology is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRAINING KW - ORGANIZATION KW - AUTHORS KW - LITTERATEURS KW - META-analysis KW - LEARNING N1 - Accession Number: 9608130; Arthur Jr., Winfred 1; Email Address: wea@psyc.tamu.edu; Bennett Jr., Winston 2; Edens, Pamela S. 1; Bell, Suzanne T. 1; Affiliations: 1: Texas A&M University.; 2: Air Force Research Laboratory.; Issue Info: Apr2003, Vol. 88 Issue 2, p234; Thesaurus Term: TRAINING; Thesaurus Term: ORGANIZATION; Subject Term: AUTHORS; Subject Term: LITTERATEURS; Subject Term: META-analysis; Subject Term: LEARNING; NAICS/Industry Codes: 711510 Independent Artists, Writers, and Performers; NAICS/Industry Codes: 711513 Independent writers and authors; Number of Pages: 12p; Illustrations: 1 Chart, 1 Graph; Document Type: Article L3 - 10.1037/0021-9010.88.2.234 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=9608130&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Wright, Brett M. AU - Barker, James R. AU - Cordery, John L. AU - Maue, Brian E. T1 - The Ideal Participative State: A Prelude to Work Group Effectiveness. JO - Journal of Business & Management JF - Journal of Business & Management Y1 - 2003///Spring2003 VL - 9 IS - 2 M3 - Article SP - 171 PB - Journal of Business & Management SN - 1535668X AB - Describes the ideal participative state in the context of a process-oriented model of group work effectiveness. Argument that ideal participative state functions as a primary antecedent of, or precursor to, work group effectiveness; Constitutive dimensions of the ideal participative state. KW - MANAGEMENT -- Employee participation KW - MANAGEMENT N1 - Accession Number: 10889561; Wright, Brett M. 1; Barker, James R. 2; Cordery, John L. 1; Maue, Brian E. 2; Affiliations: 1: University of Western Australia; 2: US Air Force Academy; Issue Info: Spring2003, Vol. 9 Issue 2, p171; Thesaurus Term: MANAGEMENT -- Employee participation; Thesaurus Term: MANAGEMENT; Number of Pages: 18p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=10889561&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Trohalaki, Steven AU - Pachter, R. T1 - QUANTUM DESCRIPTORS FOR PREDICTIVE TOXICOLOGY OF HALOGENATED ALIPHATIC HYDROCARBONS. JO - SAR & QSAR in Environmental Research JF - SAR & QSAR in Environmental Research Y1 - 2003/04// VL - 14 IS - 2 M3 - Article SP - 131 EP - 143 SN - 1062936X AB - In order to improve Quantitative Structure--Activity Relationships (QSARs) for halogenated aliphatics (HA) and to better understand the biophysical mechanism of toxic response to these ubiquitous chemicals, we employ improved quantum-mechanical descriptors to account for HA electrophilicity. We demonstrate that, unlike the lowest unoccupied molecular orbital energy, E[subLUMO], which was previously used as a descriptor, the electron affinity can be systematically improved by application of higher levels of theory. We also show that employing the reciprocal of E[subLUMO], which is more consistent with frontier molecular orbital (FMO) theory, improves the correlations with in vitro toxicity data. We offer explanations based on FMO theory for a result from our previous work, in which the LUMO energies of HA anions correlated surprisingly well with in vitro toxicity data. Additional descriptors are also suggested and interpreted in terms of the accepted biophysical mechanism of toxic response to HAs and new QSARs are derived for various chemical categories that compose the data set employed. These alternate descriptors provide important insight and could benefit other classes of compounds where the biophysical mechanism of toxic response involves dissociative attachment. [ABSTRACT FROM AUTHOR] AB - Copyright of SAR & QSAR in Environmental Research is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QSAR (Biochemistry) KW - Structure-activity relationships (Biochemistry) KW - Aliphatic compounds KW - Toxicology KW - Chemicals KW - Halogenated aliphatic hydrocarbons KW - Quantum descriptors N1 - Accession Number: 11612020; Trohalaki, Steven 1,2; Email Address: steven.trohalaki@wpafb.af.mil; Pachter, R. 1; Affiliations: 1: Materials & Manufacturing Directorate, Air Force Research Laboratory, AFRL/MLPJ Building 651 3005 P Street, Suite 1, Wright-Patterson Air Force Base, OH 45433-7702, USA; 2: Technical Management Concepts, Inc., P.O. Box 340345, Beavercreek, OH 45434-3405, USA; Issue Info: Apr2003, Vol. 14 Issue 2, p131; Thesaurus Term: QSAR (Biochemistry); Thesaurus Term: Structure-activity relationships (Biochemistry); Thesaurus Term: Aliphatic compounds; Thesaurus Term: Toxicology; Subject Term: Chemicals; Author-Supplied Keyword: Halogenated aliphatic hydrocarbons; Author-Supplied Keyword: Quantum descriptors; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 13p; Document Type: Article L3 - 10.1080/1062936031000073153 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=11612020&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 106887828 T1 - College coaches corner. Learning from each other: summer training programs. AU - Hedrick A AU - Jones K AU - Rogers R AU - Dahoda J Y1 - 2003/04//2003 Apr N1 - Accession Number: 106887828. Language: English. Entry Date: 20031128. Revision Date: 20150711. Publication Type: Journal Article; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletic Training KW - Athletes, College KW - Seasons KW - Muscle Strengthening SP - 42 EP - 44 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 25 IS - 2 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - Head Strength and Conditioning Coach, United States Air Force Academy UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106887828&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Kattaa, V.R. AU - Meyer, T.R. AU - Gord, J.R. AU - Roquemore, W.M. T1 - Insights into non-adiabatic-equilibrium flame temperatures during millimeter-size vortex/flame interactions JO - Combustion & Flame JF - Combustion & Flame Y1 - 2003/03// VL - 132 IS - 4 M3 - Article SP - 639 SN - 00102180 AB - Previous experimental and numerical studies have demonstrated that local flame temperatures can significantly increase above or decrease below the adiabatic-equilibrium flame temperature during millimeter-size vortex/flame interactions. Such large excursions in temperature are not observed in centimeter-size vortex/flame interactions. To identify the physical mechanisms responsible for these super- or sub-adiabatic-equilibrium flame temperatures, numerical studies have been conducted for millimeter-size vortex/flame interactions in a hydrogen-air, opposing-jet diffusion flame. Contrary to expectations, preferential diffusion between H2 and O2 and geometrical curvature are not responsible for these variations in local flame temperature. This was demonstrated through simulations made by forcing the diffusion coefficients of H2 and O2 to be equal and thereby eliminating preferential diffusion. Propagation of flame into small (∼1 mm) vortices suggested that the amount of reactant carried by such a small vortex is not sufficient to feed the flame with fresh reactant during the entire vortex/flame interaction process. Various numerical experiments showed that the reactant-limiting characteristics associated with the millimeter-size vortices and the local Lewis number (not preferential diffusion) are responsible for the generation of flame temperature that is different from the adiabatic-equilibrium value. The reactant-deficient nature of the millimeter-size vortices forces the combustion products to be entrained into the vortex. While a greater-than-unity Lewis number results in pre-heating of the reactant through the product entrainment, a less-than-unity Lewis number causes cooling of the reactant. Contrary to this behavior, a centimeter-size large vortex wraps and maintains the flame around its outer perimeter by feeding the flame with fresh reactant throughout the interaction process, thereby rendering the flame unaffected by the Lewis number. Since turbulent flames generally involve interactions with small-size vortices, the physical mechanisms described here should be considered when developing mathematical models for turbulent flames. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Diffusion KW - Fluid dynamics KW - Diffusion flames KW - Non-adiabatic temperature KW - Preferential diffusion KW - Turbulence KW - Vortex/flame interactions N1 - Accession Number: 9446219; Kattaa, V.R. 1; Email Address: vrkatta@erinet.com; Meyer, T.R. 1; Gord, J.R. 2; Roquemore, W.M. 2; Affiliations: 1: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Rd., Dayton, OH 45440 USA U.S.A; 2: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433 USA U.S.A; Issue Info: Mar2003, Vol. 132 Issue 4, p639; Thesaurus Term: Diffusion; Subject Term: Fluid dynamics; Author-Supplied Keyword: Diffusion flames; Author-Supplied Keyword: Non-adiabatic temperature; Author-Supplied Keyword: Preferential diffusion; Author-Supplied Keyword: Turbulence; Author-Supplied Keyword: Vortex/flame interactions; Number of Pages: 13p; Document Type: Article L3 - 10.1016/S0010-2180(02)00517-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=9446219&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Müller, Tina Andrea AU - Werlen, Christoph AU - Spain, Jim AU - van der Meer, Jan Roelof T1 - Evolution of a chlorobenzene degradative pathway among bacteria in a contaminated groundwater mediated by a genomic island in Ralstonia. JO - Environmental Microbiology JF - Environmental Microbiology Y1 - 2003/03// VL - 5 IS - 3 M3 - Article SP - 163 EP - 173 PB - Wiley-Blackwell SN - 14622912 AB - Summary The genetic structure of two Ralstonia spp., strain JS705 and strain JS745, isolated from the same groundwater aquifer, was characterized with respect to the degradation capacities for toluene and chlorobenzene degradation. Cosmid library construction, cloning, DNA sequencing and mating experiments indicated that the genes for chlorobenzene degradation in strain JS705 were a mosaic of the clc genes, previously described for Pseudomonas sp. strain B13, and a 5 kb fragment identical to strain JS745. The 5 kb fragment identical to both JS705 and JS745 was flanked in JS705 by one complete and one incomplete insertion (IS) element. This suggested involvement of the IS element in mobilizing the genes from JS745 to JS705, although insertional activity of the IS element in its present configuration could not be demonstrated. The complete genetic structure for chlorobenzene degradation in strain JS705 resided on a genomic island very similar to the clc element (Ravatn, R., Studer, S., Springael, D., Zehnder, A.J., van der Meer, J.R. 1998. Chromosomal integration, tandem amplification, and deamplification in Pseudomonas putida F1 of a 105-kilobase genetic element containing the chlorocatechol degradative genes from Pseudomonas sp. strain B13. J Bacteriol 180: 4360–4369). The unique reconstruction of formation of a metabolic pathway through the activity of IS elements and a genomic island in the chlorobenzene-degrading strain JS705 demonstrated how pathway evolution can occur under natural conditions in a few ‘steps’. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Microbiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Groundwater -- Microbiology KW - Bacterial genetics KW - Ralstonia N1 - Accession Number: 9121153; Müller, Tina Andrea 1; Werlen, Christoph 1; Spain, Jim 2; van der Meer, Jan Roelof 1; Affiliations: 1: Swiss Federal Institute for Environmental Science and Technology (EAWAG), Ueberlandstrasse 133, CH-8600 Dübendorf, Switzerland.; 2: Air Force Research Laboratory, AFRL/MLQL, 139 Barnes Drive, Tyndall AFB, FL 32403, USA.; Issue Info: Mar2003, Vol. 5 Issue 3, p163; Thesaurus Term: Groundwater -- Microbiology; Thesaurus Term: Bacterial genetics; Subject Term: Ralstonia; Number of Pages: 11p; Document Type: Article L3 - 10.1046/j.1462-2920.2003.00400.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=9121153&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Gaitonde, D.V. AU - Visbal, M.R. T1 - Advances in the Application of High-order Techniques in Simulation of Multi-disciplinary Phenomena. JO - International Journal of Computational Fluid Dynamics JF - International Journal of Computational Fluid Dynamics Y1 - 2003/03// VL - 17 IS - 2 M3 - Article SP - 95 SN - 10618562 AB - This paper describes the development of a comprehensive high-fidelity algorithmic framework to simulate the three-dimensional fields associated with multi-disciplinary physics. A wide range of phenomena is considered, from aero-acoustics and turbulence to electromagnetics, non-linear fluid-structure interactions, and magnetogasdynamics. The scheme depends primarily on "spectral-like," up to sixth-order accurate compact-differencing and up to tenth-order filtering techniques. The tightly coupled procedure suppresses numerical instabilities commonly encountered with high-order methods on non-uniform meshes, near computational boundaries or in the simulation of nonlinear dynamics. Particular emphasis is placed on developing the proper metric evaluation procedures for three-dimensional moving and curvilinear meshes so that the advantages of higher-order schemes are retained in practical calculations. A domain-decomposition strategy based on finite-sized overlap regions and interface boundary treatments enables the development of highly scalable solvers. The utility of the method to simulate problems governed by widely disparate governing equations is demonstrated with several examples encompassing vortex dynamics, wave scattering, electro-fluid plasma interactions, and panel flutter. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Computational Fluid Dynamics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Mathematical physics KW - Algorithms KW - Fluid dynamics KW - Acoustics KW - Aerostructural interactions KW - Computational fluid dynamics KW - Magnetogasdynamics KW - Multidisciplinary analysis N1 - Accession Number: 10726640; Gaitonde, D.V. 1; Email Address: miguel.visbal@va.afrl.af.mil; Visbal, M.R. 1; Affiliations: 1: Computational Sciences Branch, Aeronautical Sciences Division, Air Force Research Laboratory, Ohio; Issue Info: Mar2003, Vol. 17 Issue 2, p95; Subject Term: Mathematical physics; Subject Term: Algorithms; Subject Term: Fluid dynamics; Author-Supplied Keyword: Acoustics; Author-Supplied Keyword: Aerostructural interactions; Author-Supplied Keyword: Computational fluid dynamics; Author-Supplied Keyword: Magnetogasdynamics; Author-Supplied Keyword: Multidisciplinary analysis; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=10726640&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Coletta, Damon AU - Gartzke, Erik AD - US Air Force Academy AD - Columbia U T1 - Testing War in the Error Term JO - International Organization JF - International Organization Y1 - 2003///Spring VL - 57 IS - 2 SP - 445 EP - 448 SN - 00208183 N1 - Accession Number: 0666513; Keywords: War; Publication Type: Journal Article; Update Code: 200311 N2 - The proof for "War Is in the Error Term," a piece that appeared in the Summer 1999 issue of International Organization, contains a subtle error. Once the correction is made, there are broader implications for testing theories of war using quantitative studies. Large-n tests to verify the incomplete information explanation for war will be more difficult to perform than originally anticipated. KW - Conflict; Conflict Resolution; Alliances D74 L3 - http://journals.cambridge.org/action/displayBackIssues?jid=INO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0666513&site=ehost-live&scope=site UR - http://journals.cambridge.org/action/displayBackIssues?jid=INO DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Koberg, Christine S. AU - Detienne, Dawn R. AU - Heppard, Kurt A. T1 - An empirical test of environmental, organizational, and process factors affecting incremental and radical innovation JO - Journal of High Technology Management Research JF - Journal of High Technology Management Research Y1 - 2003///Spring2003 VL - 14 IS - 1 M3 - Article SP - 21 SN - 10478310 AB - This study examines the influence of environmental, organizational, process, and managerial characteristics on incremental and radical innovation across three industries (aerospace, electronic components, and telecommunications). Results show that different mixes of environmental and organizational variables were significant predictors of incremental and radical innovation. Factors that favor incremental innovation include environmental dynamism, age and size of the firm (although not in the expected direction), intrafirm structural linkages, and the age of the CEO. Factors that favor radical innovation include environmental dynamism, intrafirm linkages, experimentation, and transitioning or sequencing from one project or product to another. [Copyright &y& Elsevier] AB - Copyright of Journal of High Technology Management Research is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROSPACE industries KW - TELECOMMUNICATION KW - ELECTRONICS KW - Incremental KW - Innovation KW - Radical N1 - Accession Number: 9307781; Koberg, Christine S. 1; Email Address: christine.koberg@colorado.edu; Detienne, Dawn R. 2; Email Address: detienne@b202.usu.edu; Heppard, Kurt A. 3; Email Address: heppardka.dfm.usafa@usafa.af.mil; Affiliations: 1: Graduate School of Business Administration, University of Colorado, Campus Box 419, Boulder, CO 80309-0419, USA; 2: Department of Management and HR, Utah State University, 3555 Old Main Hill, Logan, UT 84322-3555, USA; 3: Department of Management, United States Air Force Academy, 2354 Fairchild Drive, Suite 6H94, USAF Academy, CO 80840-5701, USA; Issue Info: Spring2003, Vol. 14 Issue 1, p21; Thesaurus Term: AEROSPACE industries; Thesaurus Term: TELECOMMUNICATION; Subject Term: ELECTRONICS; Author-Supplied Keyword: Incremental; Author-Supplied Keyword: Innovation; Author-Supplied Keyword: Radical; NAICS/Industry Codes: 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; NAICS/Industry Codes: 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 811213 Communication Equipment Repair and Maintenance; NAICS/Industry Codes: 517919 All Other Telecommunications; NAICS/Industry Codes: 517910 Other telecommunications; NAICS/Industry Codes: 517911 Telecommunications Resellers; Number of Pages: 25p; Document Type: Article L3 - 10.1016/S1047-8310(03)00003-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=9307781&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Kidd Jr., Gerald AU - Mason, Christine R. AU - Arbogast, Tanya L. AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Informational masking caused by contralateral stimulation. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2003/03// VL - 113 IS - 3 M3 - Article SP - 1594 EP - 1603 SN - 00014966 AB - Although informational masking is thought to reflect central mechanisms, the effects are generally much stronger when the target and masker are presented to the same ear than when they are presented to different ears. However, the results of a recent study by Brungart and Simpson [J. Acoust. Soc. Am. 112, 2985–2995 (2002)] indicated that a speech masker that is presented contralateral to a speech signal can produce substantial amounts of informational masking when a second speech masker is played simultaneously in the same ear as the signal. In this study, we conducted a series of experiments that paralleled those of Brungart and Simpson but used a pure-tone signal and multitone informational maskers in a detection task. Both the signal and the maskers were played as sequences of short bursts in each observation interval. The maskers were arranged in two types of spectrotemporal patterns. One type of pattern, called “multiple-bursts same” (MBS), has previously been shown to produce very large amounts of informational masking while the other type of pattern, called “multiple-bursts different” (MBD), has been shown to produce very small amounts of informational masking. Several conditions of ipsilateral, contralateral, and combined presentation of these maskers were tested. The results showed that presentation of the MBS masker in the contralateral ear produced a substantial amount of informational masking when the MBD masker was simultaneously presented to the ipsilateral ear. The results supported the earlier findings of Brungart and Simpson indicating that listeners are unable to selectively focus their attention on a single ear in some complex dichotic listening conditions. These results suggest that this contralateral masking effect is not restricted to speech and may reflect more general limitations on processing capacity. Further, it was concluded that the magnitude of the contralateral masking effect was related both to the informational masking value of the contralateral masker and the complexity of the stimulus and/or task in the ear in which the signal was presented. © 2003 Acoustical Society of America. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AUDITORY masking KW - EAR KW - SPEECH KW - SIGNAL processing KW - ELECTRIC stimulation N1 - Accession Number: 19824065; Kidd Jr., Gerald 1; Email Address: gkidd@bu.edu; Mason, Christine R. 1; Arbogast, Tanya L. 1; Brungart, Douglas S. 2; Simpson, Brian D. 3; Affiliations: 1 : Hearing Research Center, Sargent College, Boston University, 635 Commonwealth Avenue, Boston, Massachusetts 02132; 2 : Air Force Research Laboratory, AFRL/HECB, Wright-Patterson Air Force Base, Ohio 45433; 3 : Veridian, 5200 Springfield Pike, Suite 200, Dayton, Ohio 45431; Source Info: Mar2003, Vol. 113 Issue 3, p1594; Subject Term: AUDITORY masking; Subject Term: EAR; Subject Term: SPEECH; Subject Term: SIGNAL processing; Subject Term: ELECTRIC stimulation; Number of Pages: 10p; Illustrations: 2 Charts, 5 Graphs; Document Type: Article L3 - 10.1121/1.1547440 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=19824065&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR AU - DelRaso, N. J. AU - Foy, B. D. AU - Gearhart, J. M. AU - Frazier, J. M. T1 - Cadmium Uptake Kinetics in Rat Hepatocytes: Correction for Albumin Binding. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 2003/03// VL - 72 IS - 1 M3 - Article SP - 19 EP - 30 PB - Oxford University Press / USA SN - 10966080 AB - The relationship between cytotoxicity and kinetics of cadmium uptake was investigated in primary rat hepatocyte cultures. Primary rat hepatocytes were exposed to cadmium concentrations ranging from 1.0 to 80 μM in albumin-free buffer or 32 to 8000 μM in buffer containing physiological concentrations of bovine serum albumin (600 μM) for 1 h, and cellular toxicity was observed at 23 h postexposure. Hepatocytes exposed to cadmium in the presence of albumin appeared less sensitive to cadmium toxicity when compared to cells exposed in the absence of albumin. The experimentally derived 23-h postexposure EC50s for hepatocytes exposed to cadmium in both presence and absence of albumin was 65.5 ± 2.4 and 14.3 ± 3.9 μM, respectively. A Scatchard plot of cadmium binding to albumin suggested two high-affinity binding sites. The observed uptake of cadmium by hepatocytes in the absence and presence of albumin consisted of a composite fast uptake rate and cell membrane association (Component I), and a slow, sustained uptake rate (Component II). Cadmium uptake rates in hepatocytes, based on total medium cadmium concentrations, indicated that Component II uptake rates were four times faster under albumin-free exposure conditions. However, when uptake rates were evaluated, based on the calculated equilibrium concentration of free cadmium in the exposure buffer, uptake rates in hepatocytes exposed in the presence of albumin were two times as fast. This faster cadmium uptake in the presence of albumin may result from diffusion-limited, nonequilibrium conditions occurring at the cell surface. [ABSTRACT FROM PUBLISHER] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Cell-mediated cytotoxicity KW - Cadmium poisoning KW - Albumins KW - Pharmacokinetics KW - Liver cells KW - Rats as laboratory animals KW - albumin KW - cadmium KW - hepatocytes KW - in vitro KW - kinetics N1 - Accession Number: 44406486; DelRaso, N. J. 1; Email Address: nicholas.delraso@he.wpafb.af.mil; Foy, B. D.; Gearhart, J. M.; Frazier, J. M. 1; Affiliations: 1: Operational Toxicology Branch, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7400; Issue Info: Mar2003, Vol. 72 Issue 1, p19; Thesaurus Term: Cell-mediated cytotoxicity; Thesaurus Term: Cadmium poisoning; Thesaurus Term: Albumins; Subject Term: Pharmacokinetics; Subject Term: Liver cells; Subject Term: Rats as laboratory animals; Author-Supplied Keyword: albumin; Author-Supplied Keyword: cadmium; Author-Supplied Keyword: hepatocytes; Author-Supplied Keyword: in vitro; Author-Supplied Keyword: kinetics; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 12p; Illustrations: 2 Diagrams, 2 Charts, 9 Graphs; Document Type: Article L3 - 10.1093/toxsci/kfg009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=44406486&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Newmiller, William T1 - A Real Good War Recollection and Conversation with Sam Halpert. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2003/03// Y1 - 2003/03// VL - 15 IS - 1/2 M3 - Article SP - 152 EP - 159 PB - US Air Force Academy English Department SN - 10466967 AB - Discusses Sam Halpert's authorship of the war novel "A Real Good War." Positive reviews received by the book; Reasons why World War II came to be known in contrast to the Vietnam War as a good war; Similarity between Halpert and the narrator in his novel; Advice and inspiration received from Tim O'Brien and Ray Carver; Influence of Erich Maria Remarque's "All Quiet on the Western Front." KW - REAL Good War, A (Book) KW - HALPERT, Sam KW - WAR in literature KW - WORLD War, 1939-1945 KW - WAR & literature KW - AMERICAN literature N1 - Accession Number: 12964946; Source Information: 2003, Vol. 15 Issue 1/2, p152; Subject Term: REAL Good War, A (Book); Subject Term: HALPERT, Sam; Subject Term: WAR in literature; Subject Term: WORLD War, 1939-1945; Subject Term: WAR & literature; Subject Term: AMERICAN literature; Subject Term: ; Number of Pages: 8p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12964946&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Leinbach, Glenn T1 - Critical Thought and the Culture of the Fighter Pilot. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2003/03// Y1 - 2003/03// VL - 15 IS - 1/2 M3 - Article SP - 311 EP - 315 PB - US Air Force Academy English Department SN - 10466967 AB - Argues that most military pilots think more about the joys of flight and less about killing. Story of British air pilot Richard Hillary, author of the book "The Last Enemy"; Observation that the stereotypical fighter pilot is one who gives little thought to the future; Ways in which Hillary began to see the value of striving for something greater than himself; Notion that critical thinking is one of the warrior's best weapons. KW - MILITARY air pilots KW - HILLARY, Richard KW - LAST Enemy, The (Book) KW - MILITARY aeronautics KW - FIGHTER pilots KW - GREAT Britain N1 - Accession Number: 12965251; Source Information: 2003, Vol. 15 Issue 1/2, p311; Subject Term: MILITARY air pilots; Subject Term: HILLARY, Richard; Subject Term: LAST Enemy, The (Book); Subject Term: MILITARY aeronautics; Subject Term: FIGHTER pilots; Subject Term: ; Geographic Subject: GREAT Britain; Geographic Subject: ; Number of Pages: 5p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12965251&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Boxwell, D.A. T1 - Recall Roster. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2003/03// Y1 - 2003/03// VL - 15 IS - 1/2 M3 - Book Review SP - 334 EP - 339 PB - US Air Force Academy English Department SN - 10466967 AB - Reviews the book "Company K," by William March, with an introduction by Philip D. Beidler. KW - COMPANY K (Book) KW - MARCH, William KW - WAR & literature KW - FICTION N1 - Accession Number: 12965275; Source Information: 2003, Vol. 15 Issue 1/2, p334; Subject Term: COMPANY K (Book); Subject Term: MARCH, William; Subject Term: WAR & literature; Subject Term: FICTION; Subject Term: ; Number of Pages: 6p; ; Illustrations: 1 Black and White Photograph; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12965275&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Meredith, James H. T1 - Time Switched. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2003/03// Y1 - 2003/03// VL - 15 IS - 1/2 M3 - Book Review SP - 341 EP - 344 PB - US Air Force Academy English Department SN - 10466967 AB - Reviews the book "The Immensity of the Here and Now," by Paul West. KW - IMMENSITY of the Here & Now: A Novel of 9/11, The (Book) KW - WEST, Paul, 1930-2015 KW - WAR & literature KW - FICTION N1 - Accession Number: 12965292; Source Information: 2003, Vol. 15 Issue 1/2, p341; Subject Term: IMMENSITY of the Here & Now: A Novel of 9/11, The (Book); Subject Term: WEST, Paul, 1930-2015; Subject Term: WAR & literature; Subject Term: FICTION; Subject Term: ; Number of Pages: 4p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12965292&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Johnston, Allegra T1 - The Simple Sounds of Freedom: The True Story of the Only Soldier To Fight For Both America and the Soviet Union in WWII. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2003/03// Y1 - 2003/03// VL - 15 IS - 1/2 M3 - Book Review SP - 358 EP - 360 PB - US Air Force Academy English Department SN - 10466967 AB - Reviews the book "The Simple Sounds of Freedom: The True Story of the Only Soldier to Fight for Both America and the Soviet Union in WWII," by Thomas H. Taylor. KW - SIMPLE Sounds of Freedom, The (Book) KW - TAYLOR, Thomas H. KW - MILITARY personnel KW - NONFICTION N1 - Accession Number: 12965328; Source Information: 2003, Vol. 15 Issue 1/2, p358; Subject Term: SIMPLE Sounds of Freedom, The (Book); Subject Term: TAYLOR, Thomas H.; Subject Term: MILITARY personnel; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12965328&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Leinbach, Glenn T1 - West Dickens Avenue: A Marine at Khe Sanh. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2003/03// Y1 - 2003/03// VL - 15 IS - 1/2 M3 - Book Review SP - 360 EP - 362 PB - US Air Force Academy English Department SN - 10466967 AB - Reviews the book "West Dickens Avenue: A Marine at Khe Sanh," by John Corbett. KW - WEST Dickens Avenue (Book) KW - CORBETT, John, 1961- KW - MARINES KW - NONFICTION N1 - Accession Number: 12965338; Source Information: 2003, Vol. 15 Issue 1/2, p360; Subject Term: WEST Dickens Avenue (Book); Subject Term: CORBETT, John, 1961-; Subject Term: MARINES; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12965338&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Neiberg, Michael S. T1 - A Good Idea of Hell: Letters from a Chasseur à Pied. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2003/03// Y1 - 2003/03// VL - 15 IS - 1/2 M3 - Book Review SP - 362 EP - 363 PB - US Air Force Academy English Department SN - 10466967 AB - Reviews the book "A Good Idea of Hell: Letters From a Chasseur à Pied," edited by Joshua Brown. KW - GOOD Idea of Hell: Letters From a Chasseur a Pied, A (Book) KW - BROWN, Joshua KW - LETTERS KW - NONFICTION N1 - Accession Number: 12965346; Source Information: 2003, Vol. 15 Issue 1/2, p362; Subject Term: GOOD Idea of Hell: Letters From a Chasseur a Pied, A (Book); Subject Term: BROWN, Joshua; Subject Term: LETTERS; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12965346&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Newmiller, William T1 - Navajo Weapon. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2003/03// Y1 - 2003/03// VL - 15 IS - 1/2 M3 - Book Review SP - 364 EP - 365 PB - US Air Force Academy English Department SN - 10466967 AB - Reviews the book "Navajo Weapon," by Sally McClain. KW - NAVAJO Weapon (Book) KW - MCCLAIN, Sally KW - NAVAJO (North American people) KW - NONFICTION N1 - Accession Number: 12965350; Source Information: 2003, Vol. 15 Issue 1/2, p364; Subject Term: NAVAJO Weapon (Book); Subject Term: MCCLAIN, Sally; Subject Term: NAVAJO (North American people); Subject Term: NONFICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12965350&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Leinbach, Glenn T1 - The Officer's Ward. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities J1 - War, Literature & the Arts: An International Journal of the Humanities PY - 2003/03// Y1 - 2003/03// VL - 15 IS - 1/2 M3 - Book Review SP - 365 EP - 366 PB - US Air Force Academy English Department SN - 10466967 AB - Reviews the book "The Officer's Ward," by Marc Dugain, translated by Howard Curtis. KW - OFFICERS' Ward, The (Book) KW - DUGAIN, Marc KW - WAR in literature KW - FICTION N1 - Accession Number: 12965355; Source Information: 2003, Vol. 15 Issue 1/2, p365; Subject Term: OFFICERS' Ward, The (Book); Subject Term: DUGAIN, Marc; Subject Term: WAR in literature; Subject Term: FICTION; Subject Term: ; Number of Pages: 2p; ; Document Type: Book Review; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=12965355&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Kalns, John E. AU - Dick, Edward J. AU - Scruggs, Julie P. AU - Kieswetter, Kris AU - Wright, Jim K. T1 - Hyperbaric oxygen treatment prevents up-regulation of angiogenesis following partial-thickness skin grafts in the pig. JO - Wound Repair & Regeneration JF - Wound Repair & Regeneration Y1 - 2003/03// VL - 11 IS - 2 M3 - Article SP - 139 EP - 144 SN - 10671927 AB - We hypothesized that hyperbaric oxygen treatment (HBO) would reduce neovascularization following partial-thickness skin grafting in the Yucatan pig. Results show that capillary density 4 days postgraft is increased twofold in grafts not treated with HBO, compared to normal, ungrafted skin or skin grafts from pigs treated with HBO, p < 0.05. Similarly, the expression of vascular endothelial growth factor, a growth factor associated with neovascularization, was also reduced by HBO. Cell density in the graft boundary increased gradually after grafting, reaching a maximum 2.7-fold increase, relative to normal skin, at day 4, p < 0.05. Cell nuclei positive for proliferating cell nuclear antigen, a marker of proliferation, increased threefold by day 2, p < 0.05, and then declined to normal levels by day 7. HBO had no effect on cell density or proliferation in the boundary region or on shear strength of the graft. In the epidermis, proliferation declined 80% 2 days after grafting and then returned to levels observed in normal skin by day 4, p < 0.05; however, in pigs treated with HBO, we observed no decline in proliferation. These findings confirm the hypothesis that HBO reduces neovascularization in the partial-thickness skin graft while preserving regenerative capacity in the graft boundary and normal proliferative capacity of the epidermis. (WOUND REP REG 2003;11:139–144). [ABSTRACT FROM AUTHOR] AB - Copyright of Wound Repair & Regeneration is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERBARIC oxygenation KW - NEOVASCULARIZATION KW - SKIN-grafting KW - GROWTH factors N1 - Accession Number: 9267616; Kalns, John E. 1; Dick, Edward J. 2; Scruggs, Julie P. 1; Kieswetter, Kris 3; Wright, Jim K. 1; Source Information: Mar2003, Vol. 11 Issue 2, p139; Subject: HYPERBARIC oxygenation; Subject: NEOVASCULARIZATION; Subject: SKIN-grafting; Subject: GROWTH factors; Number of Pages: 6p; Document Type: Article L3 - 10.1046/j.1524-475X.2003.11210.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=9267616&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 2003-02852-002 AN - 2003-02852-002 AU - Mastroianni, George R. AU - Chuba, Donna M. AU - Zupan, Michael O. T1 - Self-pacing and cognitive performance while walking. JF - Applied Ergonomics JO - Applied Ergonomics JA - Appl Ergon Y1 - 2003/03// VL - 34 IS - 2 SP - 131 EP - 139 CY - Netherlands PB - Elsevier Science SN - 0003-6870 AD - Mastroianni, George R., HQ USAFA/DFBL, US Air Force Academy, 2354 Fairchild Dr Suite 5152, CO, US, 80840 N1 - Accession Number: 2003-02852-002. PMID: 12628570 Partial author list: First Author & Affiliation: Mastroianni, George R.; US Air Force Academy, HQ USAFA/DFBL, CO, US. Release Date: 20030602. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Ability; Emotional States; Energy Expenditure; Walking. Minor Descriptor: Cognitive Processes; Heart Rate. Classification: Psychophysiology (2560). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Empirical Study. References Available: Y. Page Count: 9. Issue Publication Date: Mar, 2003. AB - Ten hikers, aged 18-45 yrs completed a 4 km hike on hilly terrain three times: once self-paced without load, once self-paced with a backpack load of 10% body weight, and once externally paced with a backpack load of 10% body weight. Subjects performed mental arithmetic tasks and provided ratings of perceived exertion while walking. No differences in speed or accuracy of performance of mental arithmetic problems were observed. A battery of cognitive and physical tests was performed prior to walking and after each of the three walks. Significant differences between pre-walk baselines and post-walk tests were found only for the pattern-matching task. Subjects altered their pace in response to the addition of the backpack load, and altered their speed on downhill terrain in response to external pacing, Ratings of perceived exertion were found to correlate relatively well (r = 0.80) with heart rate, but consistently underestimated actual heart rate. Underestimation was much greater for downhill than for uphill terrain. Underestimation of heart rate by rating of perceived exertion was least when subjects carried an external load of 10% body weight. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - self pacing KW - cognitive performance KW - walking KW - mental arithmetic tasks KW - speed accuracy KW - physical exertion KW - psychomotor tasks KW - body weight KW - 2003 KW - Cognitive Ability KW - Emotional States KW - Energy Expenditure KW - Walking KW - Cognitive Processes KW - Heart Rate KW - 2003 DO - 10.1016/S0003-6870(03)00008-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-02852-002&site=ehost-live&scope=site UR - george.mastroianni@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Hosur, M. V. AU - Alexander, J. AU - Jeelani, S. AU - Vaidya, U. K. AU - Mayer, A. T1 - High Strain Compression Response of Affordable Woven Carbon/Epoxy Composites. JO - Journal of Reinforced Plastics & Composites JF - Journal of Reinforced Plastics & Composites Y1 - 2003/02// VL - 22 IS - 3 M3 - Article SP - 271 EP - 296 AB - This paper discusses the experimental study on the response of affordable plain and satin weave carbon/epoxy composite laminates subjected to high strain rate compression loading using a modified Compression Split Hopkinson's Pressure Bar (SHPB). 37 layer laminates were manufactured using aerospace grade woven fabrics with SC-15 epoxy resin system utilizing Vacuum Assisted Resin Infusion Molding (VARIM) approach. Samples were subjected to high strain rate compression loading at five different strain rates ranging from 17/s to 817/s in the in-plane as well as through-the-thickness directions using a modified SHPB that facilitates controlled single pulse loading of the sample. High strain rate response was compared with that of static compression. Optical microscopy was used to characterize the failure mechanisms. Resets of the study indicate considerable increase in dynamic compression peak stress as compared to static loading, whereas the strain at peak stress was lower by 35-65%. Samples loaded through-the-thickness exhibit higher peak stresses as compared to those loaded in the in-plane direction. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Reinforced Plastics & Composites is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAMINATED materials KW - COMPOSITE materials KW - STRAINS & stresses (Mechanics) KW - ELASTIC solids KW - MECHANICS (Physics) KW - high strain rate KW - resin infusion molding KW - split Hopkinson's pressure bar KW - woven composites N1 - Accession Number: 12002848; Hosur, M. V. 1; Alexander, J. 1; Jeelani, S. 1; Vaidya, U. K. 2; Mayer, A. 3; Source Information: 2003, Vol. 22 Issue 3, p271; Subject: LAMINATED materials; Subject: COMPOSITE materials; Subject: STRAINS & stresses (Mechanics); Subject: ELASTIC solids; Subject: MECHANICS (Physics); Author-Supplied Keyword: high strain rate; Author-Supplied Keyword: resin infusion molding; Author-Supplied Keyword: split Hopkinson's pressure bar; Author-Supplied Keyword: woven composites; Number of Pages: 26p; Illustrations: 5 Black and White Photographs, 2 Diagrams, 5 Charts, 8 Graphs; Document Type: Article L3 - 10.1106/073168403022844 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=12002848&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 106868245 T1 - Serum dioxin and psychological functioning in U.S. Air Force veterans of the Vietnam War. AU - Michalek JE AU - Barrett DH AU - Morris RD AU - Jackson WG Jr. Y1 - 2003/02//2003 Feb N1 - Accession Number: 106868245. Language: English. Entry Date: 20030919. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. Instrumentation: Minnesota Multiphasic Personality Inventory (MMPI); Millon Clinical Multiaxial Inventory (MCMI). NLM UID: 2984771R. KW - Dioxins -- Blood KW - Mental Disorders -- Chemically Induced KW - Veterans -- United States KW - War -- Vietnam KW - Case Control Studies KW - Confidence Intervals KW - Confounding KW - Data Analysis Software KW - Herbicides KW - Logistic Regression KW - MMPI KW - Null Hypothesis KW - Odds Ratio KW - Psychological Tests KW - Questionnaires KW - Scales KW - United States KW - United States Air Force KW - Vietnam KW - Human SP - 153 EP - 159 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 168 IS - 2 CY - Bethesda, Maryland PB - AMSUS AB - Using the Minnesota Multiphasic Personality Inventory and the Millon Clinical Multiaxial Inventory, we assessed the psychological functioning of U.S. Air Force veterans exposed to Agent Orange and its contaminant, 2,3,7,8-tetrachlodibenzo-p-dioxin (dioxin), during the Vietnam War. Index subjects were veterans of Operation Ranch Hand (N = 1,109). Comparisons (N = 1,493) were U.S. Air Force veterans not involved with spraying herbicides. We found few consistent psychological abnormalities associated with serum dioxin levels. Ranch Hand veterans with higher dioxin levels showed some difficulties in anxiety, somatization, depression, and a denial of psychological factors. However, those with background levels also showed indications of emotional distress, primarily in emotional numbing and lability; a guarded, suspicious, and withdrawn style of relating to others; and unusual thoughts or behaviors. SN - 0026-4075 AD - U.S. Air Force Research Laboratory, Brooks Air Force Base, TX 78235-5137 U2 - PMID: 12636146. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106868245&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2003-01891-004 AN - 2003-01891-004 AU - Michalek, Joel E. AU - Barrett, Drue H. AU - Morris, Robert D. AU - Jackson, William G. Jr. T1 - Serum Dioxin and Psychological Functioning in U.S. Air Force Veterans of the Vietnam War. JF - Military Medicine JO - Military Medicine JA - Mil Med Y1 - 2003/02// VL - 168 IS - 2 SP - 153 EP - 159 CY - US PB - Assn of Military Surgeons of the US SN - 0026-4075 SN - 1930-613X AD - Michalek, Joel E., US Air Force Research Laboratory, Brooks Air Force Base, TX, US, 78235-5137 N1 - Accession Number: 2003-01891-004. PMID: 12636146 Partial author list: First Author & Affiliation: Michalek, Joel E.; US Air Force Research Laboratory, Brooks Air Force Base, TX, US. Release Date: 20040217. Correction Date: 20170302. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Anxiety; Mental Health; Toxic Disorders; War. Minor Descriptor: Blood Serum; Depression (Emotion); Distress; Military Veterans. Classification: Environmental Toxins & Health (3280); Military Psychology (3800). Population: Human (10); Male (30). Location: US. Age Group: Adulthood (18 yrs & older) (300). Tests & Measures: Millon Clinical Multiaxial Inventory--III [Manual Second Edition]; Minnesota Multiphasic Personality Inventory. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 7. Issue Publication Date: Feb, 2003. AB - Using the Minnesota Multiphasic Personality Inventory and the Millon Clinical Multiaxial Inventory, we assessed the psychological functioning of U.S. Air Force veterans exposed to Agent Orange and its contaminant, 2,3,7,8- tetrachlodibenzo- p-dioxin (dioxin), during the Vietnam War. Index subjects were veterans of Operation Ranch Hand ( N = 1,109). Comparisons ( N = 1,493) were U.S. Air Force veterans not involved with spraying herbicides. We found few consistent psychological abnormalities associated with serum dioxin levels. Ranch Hand veterans with higher dioxin levels showed some difficulties in anxiety, somatization, depression, and a denial of psychological factors. However, those with background levels also showed indications of emotional distress, ground primarily in emotional numbing and lability; a guarded, suspicious, and withdrawn style of relating to others; and unusual thoughts or behaviors. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - psychological functioning KW - psychological abnormalities KW - emotional distress KW - serum dioxin KW - anxiety KW - somatization KW - depression KW - herbicides KW - Vietnam veterans KW - 2003 KW - Air Force Personnel KW - Anxiety KW - Mental Health KW - Toxic Disorders KW - War KW - Blood Serum KW - Depression (Emotion) KW - Distress KW - Military Veterans KW - 2003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-01891-004&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2003-88373-009 AN - 2003-88373-009 AU - Stith, Sandra M. AU - Penn, Carrie AU - Ward, David AU - Tritt, Dari ED - Jordan, Karin ED - Jordan, Karin, (Ed) T1 - Partner violence assessment. T2 - Handbook of couple and family assessment. Y1 - 2003/// SP - 187 EP - 201 CY - Hauppauge, NY, US PB - Nova Science Publishers SN - 1-59033-686-0 N1 - Accession Number: 2003-88373-009. Partial author list: First Author & Affiliation: Stith, Sandra M.; Virginia Tech, Falls Church, VA, US. Release Date: 20050404. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 1-59033-686-0, Hardcover. Language: English. Major Descriptor: Family Conflict; Family Members; Measurement; Partner Abuse; Interpersonal Relationships. Minor Descriptor: Social Issues; Violent Crime. Classification: Behavior Disorders & Antisocial Behavior (3230). Population: Human (10); Male (30); Female (40). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 15. AB - Partner violence is a pervasive social problem that has devastating effects on all family members as well as on the larger community. While this chapter focuses on violence in heterosexual relationships, partner violence is also a substantial problem in gay and lesbian relationships (Burke & Follingstad, 1999; Miller, Bobner, & Zarski, 2000). Between 2 and 4 million women are victims of partner violence each year (American Bar Association, 1995; National Clearinghouse for the Defense of Battered Women, 1994). Rates of violence vary based on the sample from which the rates are calculated. The 1995 National Violence Against Women Survey indicated that twenty-two percent of women and seven percent of men report being victimized by an intimate partner at some point in their lifetime. Even higher rates are reported from large-scale random sample studies that ask respondents to report on violence in response to family conflict. These studies find annual rates as high as ten to thirty-five percent while studies that look specifically at violent crimes indicate rates ranging from 0.2 to 1.1 percent (Straus, 1999). Regardless of the context in which violence rates are calculated, it is clear that partner violence is an all too common occurrence in many American families. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - partner violence KW - violence assessment KW - family conflict KW - heterosexual relationships KW - 2003 KW - Family Conflict KW - Family Members KW - Measurement KW - Partner Abuse KW - Interpersonal Relationships KW - Social Issues KW - Violent Crime KW - 2003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-88373-009&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2003-04686-024 AN - 2003-04686-024 AU - Quick, James Campbell AU - Tetrick, Lois E. AU - Adkins, Joyce AU - Klunder, Charles ED - Nezu, Arthur M. ED - Nezu, Christine Maguth ED - Geller, Pamela A. ED - Nezu, Arthur M., (Ed) ED - Nezu, Christine Maguth, (Ed) ED - Geller, Pamela A., (Ed) T1 - Occupational health psychology. T2 - Handbook of psychology: Health psychology, Vol. 9. Y1 - 2003/// SP - 569 EP - 589 CY - Hoboken, NJ, US PB - John Wiley & Sons Inc SN - 0-471-38514-X N1 - Accession Number: 2003-04686-024. Partial author list: First Author & Affiliation: Quick, James Campbell; U Texas, Ctr for Research on Organizational & Managerial Excellence, Arlington, TX, US. Release Date: 20030414. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 0-471-38514-X, Hardcover. Language: English. Major Descriptor: Health Care Psychology; Industrial and Organizational Psychology; Organizational Behavior; Working Conditions; Occupational Health. Minor Descriptor: Air Force Personnel. Classification: Working Conditions & Industrial Safety (3670); Military Psychology (3800). Population: Human (10). Location: US. Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 21. AB - The term occupational health psychology (OHP) has been used to describe the emerging interdisciplinary specialty at the crossroads of health psychology and public health in the organizational context of work environments. A broad interdisciplinary framework of OHP has arisen in the US because of the need for closer integration between psychology, related behavioral sciences, and occupational medicine to address the growing health and productivity costs of distress at work. While psychology and the behavioral sciences play important roles in areas of occupational safety and health, such as ergonomics, behavioral toxicology, behavioral safety, and employee assistance, OHP is expanding the boundaries of established disciplines and integrating related domains of scientific knowledge and professional practice. The first section of the chapter provides a brief historical overview of OHP. The next section reviews the ecological dimensions of OHP. The third section presents a framework for preventive health management, and the fourth section presents an organizational health center model followed by an OHP training model. A case of organizational transition is presented next, followed by a discussion of future directions. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - occupational health psychology KW - work environment KW - organizational health KW - Air Force personnel KW - 2003 KW - Health Care Psychology KW - Industrial and Organizational Psychology KW - Organizational Behavior KW - Working Conditions KW - Occupational Health KW - Air Force Personnel KW - 2003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-04686-024&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 106833731 T1 - A customer service republic: equal representation brings justice for all at the IT table. AU - Groh C Y1 - 2003/01//2003 Jan N1 - Accession Number: 106833731. Language: English. Entry Date: 20030523. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Computer/Information Science; Health Services Administration; USA. NLM UID: 9004557. KW - Guest Relations KW - Information Systems Department KW - Management SP - 61 EP - 62 JO - Healthcare Informatics JF - Healthcare Informatics JA - HEALTHC INFORM VL - 20 IS - 1 CY - New York, New York PB - Vendome Group LLC SN - 1050-9135 AD - Chief Information Officer, Directorate of Medical Services and Training, Headquarters Air Education and Training Command, Randolph Air Force Base, Texas UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106833731&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Hugo, Ronald J. AU - Nowlin, Scott R. AU - Hahn, Ila L. AU - Eaton, Frank D. AU - McCrae, Kim A. T1 - Application of an acoustic noise removal method to aircraftbased atmospheric temperature measurements. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2003/01// VL - 113 IS - 1 M3 - Article SP - 178 EP - 184 SN - 00014966 AB - An acoustic noise removal method is used to reject engine acoustical disturbances from aircraft-based atmospheric temperature measurements. Removal of engine noise from atmospheric temperature measurements allows a larger wave number range to be fit while quantifying the magnitude of atmospheric temperature turbulence. The larger wave number range was found to result in a more statistically certain spectral slope estimate, with up to a 50% reduction in the standard deviation of measured spectral slopes. The noise removal technique was found to break down under conditions of weak atmospheric temperature turbulence where the engine acoustical disturbance can be several orders of magnitude larger than atmospheric temperature turbulence. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NOISE KW - SOUND KW - ATMOSPHERIC temperature KW - TEMPERATURE measurements KW - AIRPLANES KW - ATMOSPHERIC turbulence N1 - Accession Number: 20649135; Hugo, Ronald J. 1; Email Address: hugo@ucalgary.ca; Nowlin, Scott R. 2; Hahn, Ila L. 2; Eaton, Frank D. 2; McCrae, Kim A. 2; Affiliations: 1 : University of Calgary, Calgary, Alberta T2N 1N4, Canada; 2 : Air Force Research Laboratory/Directed Energy Directorate, Kirtland AFB, New Mexico 87117; Source Info: Jan2003, Vol. 113 Issue 1, p178; Subject Term: NOISE; Subject Term: SOUND; Subject Term: ATMOSPHERIC temperature; Subject Term: TEMPERATURE measurements; Subject Term: AIRPLANES; Subject Term: ATMOSPHERIC turbulence; Number of Pages: 7p; Illustrations: 1 Chart, 12 Graphs; Document Type: Article L3 - 10.1121/1.1528591 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mah&AN=20649135&site=ehost-live&scope=site DP - EBSCOhost DB - mah ER - TY - JOUR ID - 106626797 T1 - Levels of liability: it's not just the physician anymore. AU - Weaver JD Y1 - 2003/01// N1 - Accession Number: 106626797. Language: English. Entry Date: 20050506. Revision Date: 20150711. Publication Type: Journal Article; CEU; exam questions; legal case. Journal Subset: Biomedical; Peer Reviewed; USA. Legal Case: Ramsey v. Physician's Memorial Hospital, Inc., 373 A.2d 26 (Md. 1977); Daniel v. St. Francis Cabrini Hospital of Alexandria, Inc., 415 So.2d 586 (La. 1982); Payne v. Garvey, 142 S.E.2d 159 (N.C. 1965); Parks v. Perry, 314 S.E.2d 287 (N.C. 1984); St. Paul Medical Center v. Cecil, 842 S.W.2d 808 (Texas 1992); Merritt v. Karcioglu, M.D. and Administrators of the Tulane Educational Fund, 668 S.2d 469 (La. 1996); Guilbeaux v. Lafayette General Hospital, 589 So.2d 629 (La. 1991); Butterfield v. Okubo, et al, 831 P.2d 97 (Utah 19920; Baptist Memorial Hospital System v. Sampson, 969 S.W.2d 945 (Texas 1998). NLM UID: 100889788. KW - Health Facilities -- Legislation and Jurisprudence -- United States KW - Liability, Legal KW - Nurses -- Legislation and Jurisprudence -- United States KW - Education, Continuing (Credit) KW - United States SP - 4p EP - 4p JO - Legal Medicine JF - Legal Medicine JA - LEGAL MED CY - New York, New York PB - Elsevier Science AB - Historically, only physicians were sued for medical malpractice. They were seen as the 'captain of the ship' and held responsible for all aspects of a patient's care --even care delivered by others. Today, however, non-physician health care providers as well as their employing institutions and supervisors are increasingly being named as defendants in malpractice suits and held liable for their own actions. Effective risk management requires that every health care provider, health care administrator, and health care facility must recognize the various roles each fulfills and the many levels of liability that co-exist. SN - 1344-6223 AD - IMA Consultant, United States Air Force Office of the Surgeon General, International Health Specialist Team, Bolling Air Force Base, Washington, DC UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106626797&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Riddle, Dawn L. AU - Coovert, Michael D. AU - Elliott, Linda R. AU - Schiflett, Samuel G. T1 - Potential Contributions of Rough Sets Data Analysis to Training Evaluations. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2003/01// VL - 15 IS - 1 M3 - Article SP - 41 EP - 58 PB - Taylor & Francis Ltd SN - 08995605 AB - Effective training evaluation presents many challenges to the researcher and practitioner. We introduce rough sets theory and analysis as an analytic tool that can be employed to evaluate training systems effectively. The technique is especially helpful if any of the following situations exist in evaluating the training context: Data are discrete, relations among or between predictor and criterion variables are nonlinear, it is important to be able to determine the relative importance of predictor variables, or the concept describing the training criterion changes one or more times throughout the training pipeline. The technique is applied to data taken from a high-fidelity training simulator used by Air Force Airborne Warning and Control System (AWACS) teams. Both team- and position-level findings are presented. The discussion highlights the strengths and limitations of the approach. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRAINING -- Evaluation KW - ROUGH sets KW - AIRBORNE warning & control systems N1 - Accession Number: 9722196; Riddle, Dawn L. 1; Coovert, Michael D. 1; Elliott, Linda R. 2; Schiflett, Samuel G. 3; Source Information: Jan2003, Vol. 15 Issue 1, p41; Subject: TRAINING -- Evaluation; Subject: ROUGH sets; Subject: AIRBORNE warning & control systems; Number of Pages: 18p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=9722196&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Bennett, Winston AU - Alliger, George M. AU - Eddy, Erik R. AU - Tannenbaum, Scott I. T1 - Expanding the Training Evaluation Criterion Space: Cross Aircraft Convergence and Lessons Learned From Evaluation of the Air Force Mission Ready Technician Program. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2003/01// VL - 15 IS - 1 M3 - Article SP - 59 EP - 76 PB - Taylor & Francis Ltd SN - 08995605 AB - This study reports the analyses of data collected from an evaluation effort for 2 Mission Ready Technician (MRT) training programs for C-141 transport and F-16 fighter aircraft crew chiefs. We obtained ratings from over 100 trainees in each program, as well as from their trainers and supervisors, both during training and in the field via survey. The goal of this research was to explore the criterion space set up for this evaluation. Whereas past evaluation research has explored task difficulty, frequency, and importance, this research explores an expanded criterion space, including task confidence, task performance, task difficulty, and task frequency. Descriptive statistics, predictive regressions, and exploratory factor analyses are reported. We conclude that the data show a similar factor structure for both aircraft and that MRT frequency of task performance and confidence ratings are highly predictive of field performance. A major implication is that one way to optimize the effectiveness of training is to emphasize the development of trainee confidence at a relatively micro level, such as the task level. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRAINING -- Evaluation KW - FLIGHT crews N1 - Accession Number: 9722362; Bennett, Winston 1; Alliger, George M. 2; Eddy, Erik R. 2; Tannenbaum, Scott I. 3; Source Information: Jan2003, Vol. 15 Issue 1, p59; Subject: TRAINING -- Evaluation; Subject: FLIGHT crews; Number of Pages: 18p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=9722362&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Nullmeyer, Robert T. AU - Spiker, V. Alan T1 - The Importance of Crew Resource Management Behaviors in Mission Performance: Implications for Training Evaluation. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2003/01// VL - 15 IS - 1 M3 - Article SP - 77 EP - 96 PB - Taylor & Francis Ltd SN - 08995605 AB - Cockpit/crew resource management (CRM) training within the military has grown rapidly despite the paucity of empirical data linking CRM to mission performance. CRM training objectives (and course content) are often too vague to allow meaningful training evaluation within the context of traditional transfer-of-training paradigms. A multimeasure methodology that exploits all sources of archival and observational data within a training organization has the potential to advance training evaluation, particularly for crew-based skills such as CRM. This article discusses a variety of CRM data sources and presents findings using 2 of these sources: instructor comments in student training folders and over-the-shoulder observations of crews in tactical simulators. Instructor comments revealed that CRM problems early in training most frequently involve decision making and communication among crew members. Over-the-shoulder observations of experienced crews showed high correlations between independent ratings of CRM proficiency and mission performance. The most effective crews exhibited such characteristic CRM behaviors as the presence of a single leader and willingness to change plans based on changing mission situations. The article closes by describing how these study data can be used to restructure CRM training into a set of behavior-based objectives that will enable meaningful evaluation of its effectiveness in improving the performance levels of all student crews. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESOURCE management KW - MILITARY missions KW - FLIGHT crews KW - TRAINING N1 - Accession Number: 9722365; Nullmeyer, Robert T. 1; Spiker, V. Alan 2; Source Information: Jan2003, Vol. 15 Issue 1, p77; Subject: RESOURCE management; Subject: MILITARY missions; Subject: FLIGHT crews; Subject: TRAINING; Number of Pages: 20p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=9722365&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - West, James E. AU - Linster, Bruce AD - US Air Force Academy AD - US Air Force Academy T1 - The Evolution of Fuzzy Rules as Strategies in Two-Player Games JO - Southern Economic Journal JF - Southern Economic Journal Y1 - 2003/01// VL - 69 IS - 3 SP - 705 EP - 717 SN - 00384038 N1 - Accession Number: 0638814; Keywords: Games; Nash Equilibrium; Two Player; Publication Type: Journal Article; Update Code: 200304 N2 - This paper describes simulations using fuzzy rules that show how Nash equilibrium behavior can be achieved by boundedly rational agents in two-player games with infinite strategy spaces. That is, we show how agents using simple "rules of thumb" can achieve near-equilibrium outcomes without any overt computation of the equilibrium. This is accomplished by using a genetic algorithm to approximate repeated play. Two games of differing complexities, both with analytic solutions, are examined: a repeated linear-demand Cournot game and a contestable rent game. When fuzzy rules used only the most recent information, the games we examined converged to outcomes similar to their respective Cournot-Nash equilibrium outcomes. When fuzzy rules "remembered" play from the more distant past, we found that the games converged more slowly, if at all. KW - Noncooperative Games C72 L3 - http://journal.southerneconomic.org/loi/soec UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0638814&site=ehost-live&scope=site UR - http://journal.southerneconomic.org/loi/soec DP - EBSCOhost DB - ecn ER - TY - CHAP ID - 2003-06908-001 AN - 2003-06908-001 AU - Hettinger, Lawrence AU - Haas, Michael W. ED - Hettinger, Lawrence J. ED - Haas, Michael W. ED - Hettinger, Lawrence J., (Ed) ED - Haas, Michael W., (Ed) T1 - Introduction. T2 - Virtual and adaptive environments: Applications, implications, and human performance issues. Y1 - 2003/// SP - 1 EP - 19 CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-3107-X N1 - Accession Number: 2003-06908-001. Partial author list: First Author & Affiliation: Hettinger, Lawrence; Northrop Grumman Information Technology, US. Release Date: 20041206. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-8058-3107-X, Hardcover. Language: English. Major Descriptor: Computer Applications; Human Computer Interaction; Human Machine Systems; Technology; Virtual Reality. Minor Descriptor: Human Factors Engineering; Human Machine Systems Design. Classification: Engineering & Environmental Psychology (4000). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 19. AB - Our purpose in this introductory chapter is to set the stage for the many contributions that follow by providing a general introduction to the area of virtual and adaptive environment technology, and to provide an overview of several of the psychological issues involved in their design and use. We will also describe some of the emerging applications of these technologies across a number of applied and scientific domains. In doing so, we will draw on our own work in the design and evaluation of these systems for use in current and future aviation, naval, and medical systems, as well as the rapidly expanding literature concerned with similar issues in these and other application areas. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - virtual reality applications KW - adaptive environments KW - human-machine interfaces KW - virtual environments KW - technology KW - 2003 KW - Computer Applications KW - Human Computer Interaction KW - Human Machine Systems KW - Technology KW - Virtual Reality KW - Human Factors Engineering KW - Human Machine Systems Design KW - 2003 DO - 10.1201/9781410608888.ch1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-06908-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2003-06908-009 AN - 2003-06908-009 AU - Bolia, Robert S. AU - Nelson, W. Todd ED - Hettinger, Lawrence J. ED - Haas, Michael W. ED - Hettinger, Lawrence J., (Ed) ED - Haas, Michael W., (Ed) T1 - Spatial audio displays for target acquisition and speech communications. T2 - Virtual and adaptive environments: Applications, implications, and human performance issues. Y1 - 2003/// SP - 187 EP - 197 CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-3107-X N1 - Accession Number: 2003-06908-009. Partial author list: First Author & Affiliation: Bolia, Robert S.; Air Force Research Laboratory, Wright-PattersonAir Force Base, OH, US. Release Date: 20041206. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-8058-3107-X, Hardcover. Language: English. Major Descriptor: Auditory Displays; Human Machine Systems; Oral Communication; Spatial Perception. Minor Descriptor: Tracking. Classification: Engineering & Environmental Psychology (4000). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 11. AB - The aim of the present chapter is to present some of the more basic research in two areas for which spatial audio displays may prove useful--target acquisition and speech communications--and to discuss the form such displays may take, as well as some implementation issues. Once the two research areas have been addressed individually, the potential for interactions between them will be raised, along with the possibility of dynamically switching between the two interface types according to the state of the operator, of the environment, or both. Finally, the role of these displays as components of multisensory adaptive interfaces will be discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - target acquisition KW - spatial audio displays KW - speech communication KW - 2003 KW - Auditory Displays KW - Human Machine Systems KW - Oral Communication KW - Spatial Perception KW - Tracking KW - 2003 DO - 10.1201/9781410608888.ch9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-06908-009&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - CHAP ID - 2003-06908-014 AN - 2003-06908-014 AU - Nelson, W. Todd AU - Anderson, Timothy R. AU - McMillan, Grant R. ED - Hettinger, Lawrence J. ED - Haas, Michael W. ED - Hettinger, Lawrence J., (Ed) ED - Haas, Michael W., (Ed) T1 - Alternative control technology for uninhabited aerial vehicles: Human factors considerations. T2 - Virtual and adaptive environments: Applications, implications, and human performance issues. Y1 - 2003/// SP - 303 EP - 324 CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-3107-X N1 - Accession Number: 2003-06908-014. Partial author list: First Author & Affiliation: Nelson, W. Todd; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, US. Release Date: 20041206. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-8058-3107-X, Hardcover. Language: English. Major Descriptor: Human Computer Interaction; Human Factors Engineering; Human Machine Systems Design; Technology. Minor Descriptor: Computer Applications. Classification: Human Factors Engineering (4010). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 22. AB - The purpose of this chapter will be to examine the application of several different types of alternative or nonconventional control technologies as part of human-machine interfaces for uninhabited aerial vehicle (UAV) and uninhabited combat aerial vehicle (UCAV) operations. In the present context, alternative control technologies will be defined as control devices that do not require a mechanical linkage between the operator and the input device, thereby potentially offering a more efficient and intuitive way of achieving system control. Such devices include, but are not limited to, position and orientation tracking systems, automatic speech and gesture recognition systems, head and eye movement tracking systems, and brain and brain-body-actuated control systems. One of the primary goals of this chapter will be to review several varieties of alternative control technology in terms of their technological maturity, potential benefits, and technological and human factors considerations as they relate to UAV and UCAV applications. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - alternative control technology KW - uninhabited aerial vehicle KW - uninhabited combat aerial vehicle KW - human factors considerations KW - human-machine interfaces KW - 2003 KW - Human Computer Interaction KW - Human Factors Engineering KW - Human Machine Systems Design KW - Technology KW - Computer Applications KW - 2003 DO - 10.1201/9781410608888.ch14 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-06908-014&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2004-11889-002 AN - 2004-11889-002 AU - Johnson, Dawn M. AU - Sheahan, Timothy C. AU - Chard, Kathleen M. T1 - Personality Disorders, Coping Strategies, and Posttraumatic Stress Disorder in Women with Histories of Childhood Sexual Abuse. JF - Journal of Child Sexual Abuse: Research, Treatment, & Program Innovations for Victims, Survivors, & Offenders JO - Journal of Child Sexual Abuse: Research, Treatment, & Program Innovations for Victims, Survivors, & Offenders JA - J Child Sex Abus Y1 - 2003/// VL - 12 IS - 2 SP - 19 EP - 39 CY - US PB - Haworth Press SN - 1053-8712 SN - 1547-0679 AD - Chard, Kathleen M., Dept of Educational and Counseling Psychology, U Kentucky, 235 Dickey Hall, Lexington, KY, US, 40506-0017 N1 - Accession Number: 2004-11889-002. PMID: 15105082 Partial author list: First Author & Affiliation: Johnson, Dawn M.; Brown U, School of Medicine, Providence, RI, US. Other Publishers: Taylor & Francis. Release Date: 20040712. Correction Date: 20140616. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Child Abuse; Personality Disorders; Posttraumatic Stress Disorder; Sexual Abuse. Minor Descriptor: Human Females; Survivors. Classification: Psychological & Physical Disorders (3200). Population: Human (10); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Schedule for Nonadaptive and Adaptive Personality DOI: 10.1037/t07079-000; Clinician-Administered PTSD Scale DOI: 10.1037/t00072-000. Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 21. Issue Publication Date: 2003. AB - Using a treatment-seeking sample of adult female survivors of childhood sexual abuse, the relationships between coping strategies, personality disorders (PD) and Posttraumatic Stress Disorder (PTSD) were explored. A variety of PDs were found to exist in this population, with avoidant, antisocial, dependent PDs having higher frequencies than borderline PD. Avoidant coping and PTSD severity significantly correlated with many of these PDs. PTSD severity and avoidant coping were also significantly correlated. Additionally, women with PTSD displayed higher rates of avoidant and dependent PDs, as well as more avoidant coping, than did women without PTSD. Results support a more complex conceptualization of the trauma-related symptoms that occur in adult survivors of childhood sexual abuse that incorporate the relationships between avoidant coping, personality disorders, and PTSD. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - personality disorders KW - posttraumatic stress disorder KW - childhood sexual abuse KW - trauma-related symptoms KW - adult female survivors KW - coping strategies KW - 2003 KW - Child Abuse KW - Personality Disorders KW - Posttraumatic Stress Disorder KW - Sexual Abuse KW - Human Females KW - Survivors KW - 2003 DO - 10.1300/J070v12n02_02 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-11889-002&site=ehost-live&scope=site UR - kchar0@pop.uky.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2003-09815-006 AN - 2003-09815-006 AU - Powell, Shawn AU - Hagen, Kenneth AU - Korn, Thomas T1 - Treating Pseudoseizures and Related Behaviors in an Adult Male With an Intractable Seizure Disorder. JF - Clinical Case Studies JO - Clinical Case Studies Y1 - 2003/01// VL - 2 IS - 1 SP - 79 EP - 90 CY - US PB - Sage Publications SN - 1534-6501 SN - 1552-3802 N1 - Accession Number: 2003-09815-006. Partial author list: First Author & Affiliation: Powell, Shawn; United States Air Force Academy, Colorado Springs, CO, US. Release Date: 20031201. Correction Date: 20100104. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Behavior Modification; Physical Disorders; Seizures; Intellectual Development Disorder. Minor Descriptor: Comorbidity. Classification: Behavior Therapy & Behavior Modification (3312). Population: Human (10); Male (30). Age Group: Adulthood (18 yrs & older) (300); Middle Age (40-64 yrs) (360). Methodology: Clinical Case Study; Empirical Study. References Available: Y. Page Count: 12. Issue Publication Date: Jan, 2003. AB - AD, a 42-year-old male diagnosed with an intractable seizure disorder, profound mental retardation, and numerous medical diagnoses, manifested pseudoseizures and related behaviors. To reduce the frequency of these behaviors, treatment procedures were developed and implemented. In conjunction with direct care staff members, target behaviors were identified and defined: pseudoseizures, falling, and sliding from chair. The behavioral treatment applied combined antecedent control and a progressive intervention approach using verbal cueing, visually checking, tactile attention, and edible reinforcement. Data collection occurred over an 18-month period. Results show an increase in the number of days occurring without charted behaviors within consecutive 28-day reporting periods. Data collection consisted of 7,068 observations of AD's behaviors. This allowed correlations to be conducted with significant correlations existing between pseudoseizures and falling and chair sliding and positive observations. t tests were computed resulting in significant differences between AD's target behaviors and pseudoseizures. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - pseudoseizures KW - intractable seizure disorder KW - profound mental retardation KW - medical diagnoses KW - behavioral treatment KW - 2003 KW - Behavior Modification KW - Physical Disorders KW - Seizures KW - Intellectual Development Disorder KW - Comorbidity KW - 2003 DO - 10.1177/1534650102239090 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-09815-006&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2003-05522-003 AN - 2003-05522-003 AU - Butler, Michelle A. AU - Bennett, Thomas L. T1 - In Search of a Conceptualization of Multiple Sclerosis: A Historical Perspective. JF - Neuropsychology Review JO - Neuropsychology Review JA - Neuropsychol Rev Y1 - 2003/// VL - 13 IS - 2 SP - 93 EP - 112 CY - Germany PB - Springer SN - 1040-7308 SN - 1573-6660 AD - Butler, Michelle A., Department of Behavioral Sciences and Leadership, HQ USAFA/DFBL, 2354 Fairchild Drive, USAF Academy, CO, US, 80840-6228 N1 - Accession Number: 2003-05522-003. PMID: 12887041 Partial author list: First Author & Affiliation: Butler, Michelle A.; Department of Behavioral Sciences and Leadership at the United States Air Force Academy, USAF Academy, CO, US. Release Date: 20030623. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Impairment; History; Multiple Sclerosis; Symptoms; Treatment. Classification: Neurological Disorders & Brain Damage (3297). Population: Human (10). Methodology: Literature Review. References Available: Y. Page Count: 20. Issue Publication Date: 2003. AB - A thorough understanding of Multiple Sclerosis (MS) is necessary to offer individuals informed options for treatment and planning. To assist in this quest, the following historical analysis examined how MS has been conceived from the 14th century through the early 20th century. Primary sources were consulted whenever possible, and many of the original archival materials were accessed by the first author (MB) during an on-site visit to the Rare Book Room of the New York Academy of Medicine. There is a striking similarity between how MS symptoms have presented throughout history compared with the 21st century. Sensorimotor and cognitive sequelae have been observed in patients since the 1800s. Cognitive symptoms were acknowledged in the 1800s, but disregarded in the early 1900s and were not given recognition again until the latter part of the 20th century. If conceptualizations of MS are inaccurate, patients will not be served well. In contrast to the shared symptomatology across time, early conceptualizations of etiology and treatment choices differed dramatically from today, a genuine reflection of the times in which they were created. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - multiple sclerosis KW - historical analysis KW - history KW - cognitive symptoms KW - treatment KW - 2003 KW - Cognitive Impairment KW - History KW - Multiple Sclerosis KW - Symptoms KW - Treatment KW - 2003 DO - 10.1023/A:1023884322540 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-05522-003&site=ehost-live&scope=site UR - michelle.butler@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - BOOK ID - 2003-88349-000 AN - 2003-88349-000 AU - Casebeer, William D. T1 - Natural ethical facts: Evolution, connectionism, and moral cognition. Y1 - 2003/// CY - Cambridge, MA, US PB - MIT Press SN - 0-262-03310-0 AD - Casebeer, William D., US Air Force Academy, US N1 - Accession Number: 2003-88349-000. Partial author list: First Author & Affiliation: Casebeer, William D.; US Air Force Academy, US. Release Date: 20031201. Publication Type: Book (0200), Authored Book (0240). Format Covered: Print. ISBN: 0-262-03310-0, Hardcover. Language: English. Major Descriptor: Cognition; Ethics; Human Nature; Morality; Theory of Evolution. Classification: Personality Psychology (3100). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 214. AB - This book argues that we can articulate a fully naturalized ethical theory using concepts from evolutionary biology and cognitive science, and that we can study moral cognition just as we study other forms of cognition. The author's goal is to show that we have 'softly fixed' human natures, that these natures are evolved, and that our lives go well or badly depending on how we satisfy the functional demands of these natures. This book is a comprehensive examination of what a plausible moral science would look like. The author discusses the nature of ethics and the possible relationship between science and ethics. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - evolutionary biology KW - cognitive science KW - moral cognition KW - ethical theory KW - human natures KW - ethics KW - 2003 KW - Cognition KW - Ethics KW - Human Nature KW - Morality KW - Theory of Evolution KW - 2003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-88349-000&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - BOOK ID - 2003-06908-000 AN - 2003-06908-000 AU - Hettinger, Lawrence J. AU - Haas, Michael W. ED - Hettinger, Lawrence J. ED - Haas, Michael W. T1 - Virtual and adaptive environments: Applications, implications, and human performance issues. Y1 - 2003/// CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-3107-X N1 - Accession Number: 2003-06908-000. Partial author list: First Author & Affiliation: Hettinger, Lawrence J.; Northrop Grumman Information Technology, US. Release Date: 20041206. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. ISBN: 0-8058-3107-X, Hardcover. Language: English. Major Descriptor: Computer Applications; Human Computer Interaction; Human Machine Systems; Safety; Virtual Reality. Minor Descriptor: Human Factors Engineering. Classification: Engineering & Environmental Psychology (4000). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). Page Count: 582. AB - This book on virtual and adaptive environments assembles chapters from leading academic, industrial, and government behavioral researchers. It discusses virtual reality applications for the design of future human-machine interfaces from a psychological perspective. The book's goal is to enhance the effectiveness and safety with which various complex tasks--such as medical procedures and control of an increasingly crowded air space--can be executed. It will also include entertainment applications to simply promote a sense of fun and enjoyment in the world of virtual environments, issues from both a user- and technology-based standpoint focusing on human perception, cognition, and behavior research will be included. New technical advances are happening every day in virtual reality. This book will bring you to the latest research and be of interest to all those interested in virtual reality, especially those in human factors, perceptual, and cognitive psychology. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - virtual reality applications KW - adaptive environments KW - human-machine interfaces KW - virtual environments KW - safety KW - 2003 KW - Computer Applications KW - Human Computer Interaction KW - Human Machine Systems KW - Safety KW - Virtual Reality KW - Human Factors Engineering KW - 2003 DO - 10.1201/9781410608888 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-06908-000&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 106798264 T1 - Diagnostic imaging goes to war. AU - Powell D Y1 - 2002/12//2002 Dec N1 - Accession Number: 106798264. Language: English. Entry Date: 20030124. Revision Date: 20150711. Publication Type: Journal Article; anecdote. Journal Subset: Allied Health; USA. KW - Radiologic Technologists KW - War KW - Diagnostic Imaging KW - Military Personnel SP - 31 EP - 31 JO - ASRT Scanner JF - ASRT Scanner JA - ASRT SCANNER VL - 35 IS - 3 CY - Alburquerque, New Mexico PB - American Society of Radiologic Technologists SN - 0161-3863 AD - Master Sergeant, United States Air Force, Forward Deployed Medical Unit UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106798264&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Van Valkenburg, Michael E. AU - Annable, Michael D. T1 - Mobilization and entry of DNAPL pools into finer sand media by cosolvents: two-dimensional chamber studies JO - Journal of Contaminant Hydrology JF - Journal of Contaminant Hydrology Y1 - 2002/12// VL - 59 IS - 3/4 M3 - Article SP - 211 SN - 01697722 AB - Two-dimensional chamber studies were conducted to determine qualitative and quantitative performance of cosolvents targeted at pooled dense non-aqueous phase liquid (DNAPL) (perchlorethylene, PCE) residing above a fine-grain capillary barrier. Downward mobilization of DNAPL, up gradient along an overriding cosolvent front, was observed. This produced significant pooling above a fine-grain layer that in some cases lead to entry into the capillary barrier beneath. Entry pressure calculations using physical and hydrogeologic parameters provided an excellent prediction of breakthrough of DNAPL into the capillary barrier. Calculations predict approximately 0.5 m of DNAPL would be necessary to enter a Beit Netofa clay, under extreme cosolvent flooding conditions (100% ethanol). Gradient injection of cosolvent did not appear to provide any benefit suggesting a rapid decrease in interfacial tension (IFT) compared to the rate of DNAPL solubilization. Use of a partitioning alcohol (tertiary butyl alcohol, TBA) resulted in DNAPL swelling and reduced entry into the capillary barrier. However, the trapping of flushing solution, containing PCE, could potentially lead to longer remediation times. [Copyright &y& Elsevier] AB - Copyright of Journal of Contaminant Hydrology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Dense nonaqueous phase liquids KW - Tetrachloroethylene KW - Cosolvent KW - DNAPL KW - Sand media N1 - Accession Number: 7787979; Van Valkenburg, Michael E. 1; Email Address: mike.vanvalkenburg@usafa.af.mil; Annable, Michael D. 2; Affiliations: 1: Department of Chemistry, 2355 Fairchild Drive, Suite 2N225, United States Air Force Academy, Colorado Springs, CO 80840-6230, USA; 2: Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL 32611, USA; Issue Info: Dec2002, Vol. 59 Issue 3/4, p211; Thesaurus Term: Dense nonaqueous phase liquids; Thesaurus Term: Tetrachloroethylene; Author-Supplied Keyword: Cosolvent; Author-Supplied Keyword: DNAPL; Author-Supplied Keyword: Sand media; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 20p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=7787979&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 106824593 T1 - Designing effective resistance training programs: a practical example. AU - Hedrick A Y1 - 2002/12//2002 Dec N1 - Accession Number: 106824593. Language: English. Entry Date: 20030425. Revision Date: 20150818. Publication Type: Journal Article; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Muscle Strengthening KW - Athletic Training Programs KW - Soccer KW - Military Personnel KW - United States Air Force KW - Plyometrics KW - Physical Endurance SP - 7 EP - 15 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 24 IS - 6 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106824593&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 106824605 T1 - College coaches corner. Learning from each other: providing workouts to high school coaches. AU - Hedrick A AU - Dahoda J AU - Rogers R AU - Jones K Y1 - 2002/12//2002 Dec N1 - Accession Number: 106824605. Language: English. Entry Date: 20030425. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Coaches, Athletic KW - Schools, Secondary KW - Colleges and Universities KW - Athletic Training Programs KW - Muscle Strengthening KW - Intraprofessional Relations KW - Sports Organizations -- Standards KW - Colleges and Universities -- Standards SP - 59 EP - 60 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 24 IS - 6 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106824605&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2002-01914-009 AN - 2002-01914-009 AU - Schmidt, Norman B. AU - Miller, Julie AU - Lerew, Darin AU - Woolaway-Bickel, Kelly AU - Fitzpatrick, Kathleen T1 - Imaginal provocation of panic in patients with panic disorder. JF - Behavior Therapy JO - Behavior Therapy JA - Behav Ther Y1 - 2002///Win 2002 VL - 33 IS - 1 SP - 149 EP - 162 CY - US PB - Association for Advancement of Behavior Therapy SN - 0005-7894 AD - Schmidt, Norman B., The Ohio State U, Dept of Psychology, 245 Townshend Hall, 1885 Neil Avenue Mall, Columbus, OH, US, 43210-1222 N1 - Accession Number: 2002-01914-009. Partial author list: First Author & Affiliation: Schmidt, Norman B.; The Ohio State U, Columbus, OH, US. Other Publishers: Elsevier Science. Release Date: 20020703. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Panic; Panic Disorder; Stimulus Parameters. Classification: Neuroses & Anxiety Disorders (3215). Population: Human (10); Male (30); Female (40). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. References Available: Y. Page Count: 14. Issue Publication Date: Win 2002. AB - An imaginal challenge was designed to determine the degree to which cognitive manipulations, in isolation from specific biological challenge agents, might be sufficient for the production of panic in patients with panic disorder. 20 patients with panic disorder (mean age 33.1 yrs) and 18 nonclinical controls (mean age 29 yrs) were exposed to 4 audiotaped vignettes (physical threat, social threat, loss of control threat, and control). In relation to a composite measure of panic, the experimental vignettes produced panic in 30% of the patient sample compared to 0% of the control sample. There was also evidence for increased subjective reactivity to personally relevant panicogenic stimuli. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - panic disorder KW - imagninal provocation KW - panic KW - 2002 KW - Panic KW - Panic Disorder KW - Stimulus Parameters KW - 2002 DO - 10.1016/S0005-7894(02)80010-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2002-01914-009&site=ehost-live&scope=site UR - schmidt.283@osu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2002-08232-001 AN - 2002-08232-001 AU - Schmidt, Norman B. AU - Lerew, Darin R. T1 - Prospective evaluation of perceived control, predictability, and anxiety sensitivity in the pathogenesis of panic. JF - Journal of Psychopathology and Behavioral Assessment JO - Journal of Psychopathology and Behavioral Assessment JA - J Psychopathol Behav Assess Y1 - 2002/12// VL - 24 IS - 4 SP - 207 EP - 214 CY - US PB - Plenum Publishing Corp. SN - 0882-2689 SN - 1573-3505 AD - Schmidt, Norman B., Ohio State U, Dept of Psychology, 245 Townshend Hall, Columbus, OH, US, 43210 N1 - Accession Number: 2002-08232-001. Other Journal Title: Journal of Behavioral Assessment. Partial author list: First Author & Affiliation: Schmidt, Norman B.; Ohio State U, Dept of Psychology, Columbus, OH, US. Other Publishers: Springer. Release Date: 20021218. Correction Date: 20130422. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Anxiety Disorders; Internal External Locus of Control; Pathology; Premorbidity; Risk Factors. Minor Descriptor: Etiology; Military Training; Panic; Panic Disorder; Self-Perception; Sensitivity (Personality); Anxiety Sensitivity. Classification: Neuroses & Anxiety Disorders (3215); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Methodology: Empirical Study; Longitudinal Study; Prospective Study. References Available: Y. Page Count: 8. Issue Publication Date: Dec, 2002. AB - Notes that increasing evidence suggests anxiety sensitivity (AS) may be a premorbid risk factor for the development of anxiety pathology. Perceived control and predictability have also been implicated as factors relevant to the genesis of anxiety. The principal aim of this study was to extend this work to examine independent and interactive effects of perceived control, predictability, and AS in the pathogenesis of panic. A large nonclinical sample of young adults (N=1,296) was prospectively followed over a 5-wk highly stressful period of time (i.e., military basic training). Perceived control and predictability did not independently predict panic. However, there was evidence suggesting that AS interacted with perceived control such that high perceived control regarding basic training was protective against panic for individuals with high AS. Similarly, high perceived predictability during basic training reduced anxiety symptoms for individuals with high AS. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - perceived control KW - premorbid risk KW - predictability KW - anxiety sensitivity KW - anxiety pathology KW - stress KW - military basic training KW - young adults KW - 2002 KW - Anxiety Disorders KW - Internal External Locus of Control KW - Pathology KW - Premorbidity KW - Risk Factors KW - Etiology KW - Military Training KW - Panic KW - Panic Disorder KW - Self-Perception KW - Sensitivity (Personality) KW - Anxiety Sensitivity KW - 2002 DO - 10.1023/A:1020795114296 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2002-08232-001&site=ehost-live&scope=site UR - schmidt.283@osu.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Toxopeus, Corike AU - Frazier, J. M. T1 - Simulation of Trichloroacetic Acid Kinetics in the Isolated Perfused Rat Liver Using a Biologically Based Kinetic Model. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 2002/11// VL - 70 IS - 1 M3 - Article SP - 27 EP - 39 PB - Oxford University Press / USA SN - 10966080 AB - Trichloroacetic acid (TCA) is a contaminant of drinking water. It induces peroxisome proliferation in livers of rats and mice and is hepatocarcinogenic in the latter species. Previous experimental studies of the kinetics of TCA in the isolated perfused rat liver (IPRL) at two doses have been reported. To gain more insight into the mechanistic processes controlling TCA kinetics in the liver a biologically based kinetic (BBK) model for the IPRL was used to analyze the experimental data. The IPRL was exposed to 25, 250, or 1000 μM TCA for 2 h in a recirculating perfusion system. These doses were not cytotoxic. The BBK model simulated the TCA concentration in perfusion medium and liver, and the biliary excretion of TCA. Separate protein binding studies showed that over 90% of TCA was bound to albumin in the perfusion medium whereas binding in liver homogenate was much lower. Integrating the information on protein binding into the BBK model, the hepatic uptake of TCA and its biliary excretion could be fitted assuming asymmetrical saturable transport at the sinusoidal membrane and linear transport at the bile canalicular membrane. To validate the BBK model, additional washout experiments were conducted in which the perfusion medium was replaced with TCA-free medium after 30 min of exposure of the liver to 1000 μM TCA. This approach illustrates the usefulness of BBK modeling for analyzing experimental kinetic data and gaining insight in kinetic mechanisms controlling the behavior of a chemical in the liver. [ABSTRACT FROM PUBLISHER] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Drinking water KW - PHYSIOLOGY KW - Peroxisomes KW - Protein binding KW - Chemical kinetics KW - Liver KW - Rats as laboratory animals KW - isolated perfused rat liver KW - kinetics KW - modeling KW - protein binding KW - TCA KW - transport parameters N1 - Accession Number: 44406422; Toxopeus, Corike 1; Frazier, J. M. 2; Email Address: john.frazier@wpafb.af.mil; Affiliations: 1: McLaughlin Research Institute, Great Falls, Montana 59405; 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7400; Issue Info: Nov2002, Vol. 70 Issue 1, p27; Thesaurus Term: Drinking water; Thesaurus Term: PHYSIOLOGY; Subject Term: Peroxisomes; Subject Term: Protein binding; Subject Term: Chemical kinetics; Subject Term: Liver; Subject Term: Rats as laboratory animals; Author-Supplied Keyword: isolated perfused rat liver; Author-Supplied Keyword: kinetics; Author-Supplied Keyword: modeling; Author-Supplied Keyword: protein binding; Author-Supplied Keyword: TCA; Author-Supplied Keyword: transport parameters; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 13p; Illustrations: 1 Diagram, 4 Charts, 8 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=44406422&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2002-04132-008 AN - 2002-04132-008 AU - Atlas, Jana G. AU - Smith, Gregory T. AU - Hohlstein, Leigh Anne AU - McCarthy, Denis M. AU - Kroll, Larry S. T1 - Similarities and differences between Caucasian and African American college women on eating and dieting expectancies, bulimic symptoms, dietary restraint, and disinhibition. JF - International Journal of Eating Disorders JO - International Journal of Eating Disorders JA - Int J Eat Disord Y1 - 2002/11// VL - 32 IS - 3 SP - 326 EP - 334 CY - US PB - John Wiley & Sons SN - 0276-3478 SN - 1098-108X AD - Smith, Gregory T., U Kentucky, Dept of Psychology, Lexington, KY, US, 40506-0044 N1 - Accession Number: 2002-04132-008. PMID: 12210647 Partial author list: First Author & Affiliation: Atlas, Jana G.; Alfred U, Div of School Psychology, Alfred, NY, US. Release Date: 20020911. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Blacks; Bulimia; Racial and Ethnic Differences; Risk Factors; Whites. Minor Descriptor: Dietary Restraint; Symptoms. Classification: Eating Disorders (3260). Population: Human (10); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Methodology: Empirical Study. References Available: Y. Page Count: 9. Issue Publication Date: Nov, 2002. AB - The objective of this study was to clarify race differences in eating disorder risk factors and symptoms, by comparing Caucasian and African American samples on the factor structures, intercorrelations, and mean levels of endorsement on a set of risk and symptom measures. 300 Caucasian and 200 African American undergraduate women completed measures of eating and thinness/dieting expectancies, the Three-Factor Eating Questionnaire (TFEQ), and the Bulimia Test (BULIT). The factor structures of each measure were invariant across race. Intercorrelations among the measures generally did not differ across race. On the three expectancy measures predictive of symptomatology, two of three scales of the TFEQ, and the BULIT, African American women had lower mean scores than Caucasian women. Socioeconomic status did not account for the results: in this sample, it was unrelated to race and correlated with only 1 of 20 measures. The factor-based meaning of these measures appears to be consistent across race. The measures correlate similarly across race, suggesting that the risk process may be similar for both races, but African American women endorsed significantly fewer risk factors and fewer symptoms. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - eating expectancies KW - thinness/dieting expectancies KW - dietary restraint KW - bulimic symptoms KW - disinhibition KW - Caucasians KW - African Americans KW - female undergraduates KW - 2002 KW - Blacks KW - Bulimia KW - Racial and Ethnic Differences KW - Risk Factors KW - Whites KW - Dietary Restraint KW - Symptoms KW - 2002 DO - 10.1002/eat.10081 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2002-04132-008&site=ehost-live&scope=site UR - gsmith@uky.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 106729487 T1 - Feasibility of maternity protection in early pregnancy. AU - Von Busch TA AU - Frazier LM AU - Sigler SJ AU - Molgaard CA Y1 - 2002/10//2002 Oct-Dec N1 - Accession Number: 106729487. Language: English. Entry Date: 20040430. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 9505217. KW - Job Accommodation KW - Maternal Exposure KW - Occupational Health KW - Adult KW - Chi Square Test KW - Data Analysis Software KW - Female KW - Fisher's Exact Test KW - Gestational Age KW - Mississippi KW - Occupational Health -- Legislation and Jurisprudence -- United States KW - One-Way Analysis of Variance KW - Pregnancy KW - T-Tests KW - Time Factors KW - Two-Tailed Test KW - United States KW - United States Air Force KW - Human SP - 328 EP - 331 JO - International Journal of Occupational & Environmental Health JF - International Journal of Occupational & Environmental Health JA - INT J OCCUP ENVIRON HEALTH VL - 8 IS - 4 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - Many countries have maternity protection laws for women who need job modification or medical leave during pregnancy. This approach will prevent birth defects only if maternal job changes can be made before the critical period of organogenesis, which begins at three weeks' gestation. The authors studied the gestational ages at which pregnant women working with chemicals, radiation, and noise presented for occupational safety and health consultations. The work setting promoted early presentation because the consultation was free, convenient, mandatory, and would not result in job loss. Among the 213 pregnant women evaluated between 1996 and 2000, most (89.5%) had their occupational safety evaluations in the first trimester. Although this sounds ideal, the mean gestational age at presentation was 7.5 weeks, and only 3.3% of occupational health evaluations were initiated by three weeks' gestation. Environmental and biological monitoring showed that none of the women was exposed over occupational limits. These data suggest that a workplace free from reproductive hazards needs to be provided before conception. SN - 1077-3525 AD - United States Air Force U2 - PMID: 12412850. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106729487&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 106812264 T1 - College coaches corner. Learning from each other: scheduling the strength and conditioning facility. AU - Hedrick A AU - Jones K AU - Rogers R AU - Dahoda J Y1 - 2002/10//2002 Oct N1 - Accession Number: 106812264. Language: English. Entry Date: 20030307. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletic Training KW - Fitness Centers KW - Colleges and Universities KW - Appointments and Schedules KW - Muscle Strengthening SP - 63 EP - 64 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 24 IS - 5 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - Head Strength and Conditioning Coach, United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106812264&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Hussain, Saber M. AU - Frazier, John M. T1 - Cellular Toxicity of Hydrazine in Primary Rat Hepatocytes. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 2002/10// VL - 69 IS - 2 M3 - Article SP - 424 EP - 432 PB - Oxford University Press / USA SN - 10966080 AB - Hydrazine (HzN) is an aircraft fuel and propellant used by the U.S. Air Force. The current study was undertaken to evaluate the acute toxicity of HzN in primary rat hepatocytes in vitro with reference to oxidative stress. The effects of short-term exposure (4 h) of hepatocytes to HzN were investigated with reference to viability, mitochondrial function, and biomarkers of oxidative stress. The viability data showed an increase in lactate dehydrogenase leakage and a decrease in mitochondrial activity with increasing concentration of HzN. The results of studies of oxidative stress biomarkers showed a depletion of reduced glutathione (GSH) and an increase in oxidized GSH, increased reactive oxygen species generation, lipid peroxidation, and reduced catalase activity. Furthermore, depletion of GSH and catalase activity in hepatocytes by buthionine sulfoximine and 3-amino triazole, respectively, prior to exposure to HzN, increased its toxicity. The results suggest that acute HzN-induced cytotoxicity in rat hepatocytes is likely to be mediated through oxidative stress. [ABSTRACT FROM PUBLISHER] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Hydrazine KW - Liver cells KW - Rats as laboratory animals KW - Hepatotoxicology KW - Catalase KW - catalase KW - glutathione KW - hepatocytes KW - hydrazine KW - in vitro KW - oxidative stress KW - reactive oxygen species N1 - Accession Number: 44406411; Hussain, Saber M. 1; Email Address: saber.hussain@wpafb.af.mil; Frazier, John M. 2; Affiliations: 1: ManTech Environmental Technology, Inc., Dayton, Ohio 45437; 2: Operational Toxicology Branch (AFRL/HEST), Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7400; Issue Info: Oct2002, Vol. 69 Issue 2, p424; Thesaurus Term: Hydrazine; Subject Term: Liver cells; Subject Term: Rats as laboratory animals; Subject Term: Hepatotoxicology; Subject Term: Catalase; Author-Supplied Keyword: catalase; Author-Supplied Keyword: glutathione; Author-Supplied Keyword: hepatocytes; Author-Supplied Keyword: hydrazine; Author-Supplied Keyword: in vitro; Author-Supplied Keyword: oxidative stress; Author-Supplied Keyword: reactive oxygen species; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 9p; Illustrations: 1 Chart, 7 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=44406411&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Soto, Armando AU - Foy, Brent D. AU - Frazier, John M. T1 - Effect of Cadmium on Bromosulfophthalein Kinetics in the Isolated Perfused Rat Liver System. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 2002/10// VL - 69 IS - 2 M3 - Article SP - 460 EP - 469 PB - Oxford University Press / USA SN - 10966080 AB - Bromosulfophthalein (BSP) is a relatively nontoxic organic anion used as an in vivo indicator of liver performance. Elimination of BSP via the biliary system following iv injection requires dissociation from albumin in plasma, translocation across the sinusoidal membrane, conjugation with glutathione within the hepatocyte, translocation across the bile canalicular membrane, and excretion in bile. The effects of cadmium (Cd), anin vivo hepatotoxicant in rats, on BSP kinetics in the isolated perfused rat liver (IPRL) were studied to investigate the interaction between liver toxicity and BSP kinetics. Livers were isolated from male Fisher 344 rats. After a 30-min period for acclimation to the IPRL system, livers were dosed with Cd (as cadmium acetate), in the presence of 0.25% bovine serum albumin, to give initial concentrations of 10 and 100 μM. Sixty min after Cd dosing, the IPRL system was dosed with BSP to give an initial concentration of 150 μM and the elimination kinetics of BSP from the perfusion medium were monitored. Cadmium concentrations in livers at the end of the experiments were 60 ± 4 and 680 ± 210 μmol/kg for the 10 and 100 μM doses, respectively. Exposure to 10 μM Cd for 60 min resulted in a reduction in bile flow, no significant effect on lactate dehydrogenase (LDH) leakage, and slight effects on BSP clearance. Similar studies following exposure to 100 μM Cd showed a dramatic decrease in bile flow with complete cholestasis 60 min after Cd addition. LDH leakage into perfusion medium at the end of the experiment was less than 10%, indicating that Cd affected bile production well before the liver showed significant signs of necrosis. Clearance of BSP from the perfusion medium was dramatically reduced. Taken together, the data indicate that Cd has a significant effect on the kinetics of BSP in the IPRL and the dominant effects were mediated through the cholestatic effect of Cd. [ABSTRACT FROM PUBLISHER] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Cadmium KW - Rats as laboratory animals KW - Hepatotoxicology KW - Anions KW - Cholestasis KW - biokinetics KW - bromosulfophthalein KW - cadmium KW - cholestasis KW - isolated perfused rat liver N1 - Accession Number: 44406415; Soto, Armando 1; Foy, Brent D. 2; Frazier, John M. 3; Email Address: john.frazier@wpafb.af.mil; Affiliations: 1: ManTech Environmental Technology, Dayton, Ohio 45433-7400; 2: Department of Physics, Wright State University, Dayton, Ohio 45324; 3: Operational Toxicology Branch, Air Force Research Laboratory, Bldg. 79, 2856 G St., Wright Patterson Air Force Base, Ohio 45433-7400; Issue Info: Oct2002, Vol. 69 Issue 2, p460; Thesaurus Term: Cadmium; Subject Term: Rats as laboratory animals; Subject Term: Hepatotoxicology; Subject Term: Anions; Subject Term: Cholestasis; Author-Supplied Keyword: biokinetics; Author-Supplied Keyword: bromosulfophthalein; Author-Supplied Keyword: cadmium; Author-Supplied Keyword: cholestasis; Author-Supplied Keyword: isolated perfused rat liver; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 10p; Illustrations: 1 Diagram, 3 Charts, 7 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=44406415&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2004-21705-003 AN - 2004-21705-003 AU - Stewart, John E. II AU - Dohme, John A. AU - Nullmeyer, Robert T. T1 - U.S. Army Initial Entry Rotary-Wing Transfer of Training Research. JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 2002/10// VL - 12 IS - 4 SP - 359 EP - 375 CY - US PB - Lawrence Erlbaum SN - 1050-8414 SN - 1532-7108 AD - Stewart, John E. II, ARI Rotary Wing Aviation Research Unit, Building 5100 (Attn. TAPC-ARI-IR), Fort Rucker, AL, US, 36362-5354 N1 - Accession Number: 2004-21705-003. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Stewart, John E. II; U.S. Army Research Institute, US. Other Publishers: Taylor & Francis. Release Date: 20041220. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Flight Simulation; Personnel Training. Minor Descriptor: Army Personnel. Classification: Military Psychology (3800). Population: Human (10); Male (30). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study; Scientific Simulation. References Available: Y. Page Count: 17. Issue Publication Date: Oct, 2002. AB - Early fixed-wing research demonstrated that potential cost and training benefits could be derived from simulation-augmented primary flight training. More recent research in this area has been the exception, not the rule. This is especially true for rotary-wing aircrew training research. Currently, the U.S. Army does not use simulation in the primary (contact) phase of initial entry rotary-wing (IERW) training. Research performed by the Army Research Institute showed that a combination of synthetic flight simulation and criterion-based training during the primary phase of IERW had the potential for saving training time and costs in the aircraft. This research was performed using a low-cost simulator based upon the UH-1 helicopter. In the 4 quasi-experiments reported, positive transfer effectiveness ratios (TERs) were observed for most flight maneuvers pretrained in the simulator; student pilots in the simulator group required fewer iterations than control participants to reach proficiency on most flight maneuvers in the UH-1 training aircraft. As the visual display and flight modeling systems were upgraded, greater TERs were observed, and differences among groups tended to become significant. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - rotary-wing transfer KW - training research KW - simulation-augmented primary flight training KW - 2002 KW - Aircraft Pilots KW - Flight Simulation KW - Personnel Training KW - Army Personnel KW - 2002 DO - 10.1207/S15327108IJAP1204_3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-21705-003&site=ehost-live&scope=site UR - stewartj@rwaru-emhl.army.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Coleman, N.V. AU - Spain, J.C. AU - Duxbury, T. T1 - Evidence that RDX biodegradation by Rhodococcus strain DN22 is plasmid-borne and involves a cytochrome p-450. JO - Journal of Applied Microbiology JF - Journal of Applied Microbiology Y1 - 2002/09// VL - 93 IS - 3 M3 - Article SP - 463 EP - 472 PB - Wiley-Blackwell SN - 13645072 AB - Aims: To investigate the biodegradation of the explosive compound RDX in Rhodococcus strain DN22, a bacterium previously isolated for its ability to grow on RDX as sole nitrogen source. Methods and Results: Analysis of the rates of RDX degradation and nitrite production indicated that 2 mol nitrite were produced per mole RDX degraded. Cells of strain DN22 had the highest activity against RDX during the exponential phase and low activity in the stationary phase. Nitrite production from RDX was inhibited by metyrapone, menadione, piperonyl butoxide, n -octylamine and carbon monoxide and inducible by pyrrolidine, pyridine and atrazine. Acridine orange treatment yielded RDX-minus derivatives of strain DN22 at a curing rate of 1·5% and all of the cured derivatives had lost a large plasmid. Conclusions: RDX biodegradation in strain DN22 appears to involve a plasmid-encoded cytochrome p-450 enzyme. Significance and Impact of the Study: Plasmid-borne RDX degradation genes could potentially be transferred between bacteria. Our research into RDX metabolism in strain DN22 will facilitate future applications of this bacterium for bioremediation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Microbiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Biodegradation KW - Bacteria KW - Cytochrome P-450 N1 - Accession Number: 7154441; Coleman, N.V. 1; Spain, J.C. 2; Duxbury, T. 1; Affiliations: 1: Department of Microbiology, University of Sydney, Sydney, Australia and; 2: Air Force Research Laboratory/MLQL, Tyndall AFB, FL, USA; Issue Info: Sep2002, Vol. 93 Issue 3, p463; Thesaurus Term: Biodegradation; Thesaurus Term: Bacteria; Thesaurus Term: Cytochrome P-450; Number of Pages: 10p; Document Type: Article L3 - 10.1046/j.1365-2672.2002.01713.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=7154441&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Grobman, Jeffrey H. AU - Carey, Janis M. AD - US Air Force Academy AD - Colorado School of Mines T1 - The Effect of Policy Uncertainty on Wind-Power Investment JO - Journal of Energy and Development JF - Journal of Energy and Development Y1 - 2002///Autumn VL - 28 IS - 1 SP - 1 EP - 14 SN - 03614476 N1 - Accession Number: 0646770; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 200306 N2 - This paper investigates the manner in which policy uncertainty, relating to the enactment or repeal of production tax credits (PTCs), impacts investment in wind power. Results show that the expectation of a potential PTC enactment may decrease the level of wind power investment due to the increased option value of waiting for the PTC. In contrast, the expectation of a potential PTC removal may increase the level of wind power investment as firms increase their rate of investment to take advantage of the PTC while it is in effect. KW - Alternative Energy Sources Q42 KW - Energy: Government Policy Q48 L3 - http://www.iceed.org/index.php?option=com_content&view=article&id=53&Itemid=111 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0646770&site=ehost-live&scope=site UR - http://www.iceed.org/index.php?option=com_content&view=article&id=53&Itemid=111 DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Abadi, Jacob T1 - ISRAEL'S QUEST FOR NORMALIZATION WITH AZERBAIJAN AND THE MUSLIM STATES OF CENTRAL ASIA. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 2002///Fall2002 VL - 19 IS - 2 M3 - Article SP - 63 EP - 88 SN - 87553449 AB - Presents Israel's successful efforts, in response to the collapse of the Soviet Union, to normalize relations with the Muslim states of Azerbaijan, Kazakhstan, Uzbekistan, Turkmenistan, Kyrgyzstan, and Tajikistan in the 1990's. KW - DIPLOMACY KW - MUSLIMS KW - ISLAMIC fundamentalism KW - ISLAM KW - BUSINESS KW - POLITICAL systems KW - INTERNATIONAL relations KW - ASIA, Central KW - ISRAEL N1 - Accession Number: 7333265; Abadi, Jacob 1; Affiliations: 1 : Associate Professor of History, United States Air Force Academy, Colorado Springs, CO 80840-5025; Source Info: Fall2002, Vol. 19 Issue 2, p63; Historical Period: 1991 to 1999; Subject Term: DIPLOMACY; Subject Term: MUSLIMS; Subject Term: ISLAMIC fundamentalism; Subject Term: ISLAM; Subject Term: BUSINESS; Subject Term: POLITICAL systems; Subject Term: INTERNATIONAL relations; Subject Term: ASIA, Central; Subject: ISRAEL; Number of Pages: 26p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hia&AN=7333265&site=ehost-live&scope=site DP - EBSCOhost DB - hia ER - TY - JOUR ID - 106795981 T1 - Ketorolac use in the National Football League: prevalence, efficacy, and adverse effects. AU - Tokish JM AU - Powell ET AU - Schlegel TF AU - Hawkins RJ Y1 - 2002/09// N1 - Accession Number: 106795981. Language: English. Entry Date: 20050712. Revision Date: 20150820. Publication Type: Journal Article; CEU; questionnaire/scale; research. Journal Subset: Allied Health; Peer Reviewed; USA. Instrumentation: NFL Physicians' Society Questionnaire. NLM UID: 0427461. KW - Ketorolac -- Therapeutic Use KW - Pain -- Drug Therapy KW - Athletic Injuries -- Drug Therapy KW - Football KW - Athletes, Professional KW - Education, Continuing (Credit) KW - Sports Organizations KW - Physicians, Sports Team KW - Descriptive Statistics KW - Ketorolac -- Adverse Effects KW - Questionnaires KW - Athletic Trainers KW - Drug Evaluation KW - Human SP - 19 EP - 24 JO - Physician & Sportsmedicine JF - Physician & Sportsmedicine JA - PHYSICIAN SPORTSMED VL - 30 IS - 9 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd AB - BACKGROUND: Ketorolac tromethamine is an effective NSAID for short-term relief of acute pain and can be given in oral, intravenous, and intramuscular doses. Although anecdotal reports document intramuscular ketorolac use in athletes, no study has assessed ketorolac use in a population of elite contact-sport athletes. OBJECTIVE: This study sought to determine usage patterns, effectiveness, and possible adverse events with the use of ketorolac among National Football League (NFL) players. METHODS: Survey forms were sent to the head team physician and head athletic trainer of each of the 31 NFL teams. Information sought included ketorolac use, logistics, effectiveness, safety, and adverse outcomes. RESULTS: Thirty of 31 (97%) teams responded. Twenty-eight of 30 (93%) teams used ketorolac during the 2000 season. Teams that used the drug treated an average of 15 players (range, 2 to 35). The vast majority of teams (93%) used the medication on game day. Most medical staffs found that a single injection alleviated 50% to 75% of a player's pain and lasted 1 to 2 days. Most staffs (24/27, 89%) stated that they would give ketorolac up to once a week during the season. Six of 28 (21%) teams reported an adverse experience with ketorolac use. These included 4 isolated muscle injuries, 1 gastrointestinal disturbance, and 1 instance of next-day postinjection soreness. Several teams also expressed concern about psychological dependence by players. Although many medical staffs were concerned about possible bleeding complications and kidney damage, neither was reported. CONCLUSIONS: These data suggest that ketorolac use is very common in the NFL. Most team healthcare providers believe that the drug is an effective pain reliever and are comfortable with weekly use during the season. Although isolated adverse events have been noted, most team providers feel that ketorolac is safe when the team physician directs its use. SN - 0091-3847 AD - Major, United States Air Force Medical Corps, United States Air Force Academy, Colorado Springs UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106795981&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2003-07878-005 AN - 2003-07878-005 AU - Mastroianni, George R. T1 - Milgram and the Holocaust: A reexamination. JF - Journal of Theoretical and Philosophical Psychology JO - Journal of Theoretical and Philosophical Psychology Y1 - 2002///Fal 2002 VL - 22 IS - 2 SP - 158 EP - 173 CY - US PB - Division 24 of the American Psychological Association, the Division of Theoretical and Philosophical Psychology SN - 1068-8471 SN - 2151-3341 AD - Mastroianni, George R., HQ USAFA/DFBL, 2354 Fairchild Drive, Suite 5L52, USAFA, CO, US, 80840 N1 - Accession Number: 2003-07878-005. Other Journal Title: Theoretical & Philosophical Psychology. Partial author list: First Author & Affiliation: Mastroianni, George R.; United States Air Force Academy, Dept of Behavioral Sciences & Leadership, CO, US. Other Publishers: Division 24 of the American Psychological Association; Division 24 of the American Psychological Association, Society for Theoretical and Philosophical Psychology; Educational Publishing Foundation. Release Date: 20030922. Correction Date: 20090518. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: History; Holocaust; Obedience; Social Behavior. Classification: Group & Interpersonal Processes (3020); History & Systems (2140). Population: Human (10). References Available: Y. Page Count: 16. Issue Publication Date: Fal 2002. AB - The Milgram obedience studies are widely presented in psychology textbooks as integral to understanding the behavior of Holocaust perpetrators. Recent appraisals of the Milgram legacy have not challenged this view. Discussions of the Holocaust in the historical literature are often cited by psychologists to support the claim of the centrality of the Milgram studies to understanding the Holocaust. More recent historical literature presents a different view of the Holocaust, one that directly questions the relevance of Milgram's obedience studies in understanding the Holocaust. This view has not been well represented in discussions of Milgram in psychology, and is discussed here. The nature of the evidence for the ecological validity of the Milgram studies, and the broader issue of the role of the Milgram studies as 'scientific parables' are also discussed. Authors of future psychology textbooks may wish to examine the controversial nature of the claim that Milgram's studies are central to understanding the Holocaust more fully. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Milgram KW - Holocaust KW - social behavior KW - history KW - obedience KW - 2002 KW - History KW - Holocaust KW - Obedience KW - Social Behavior KW - 2002 DO - 10.1037/h0091220 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2003-07878-005&site=ehost-live&scope=site UR - George.Mastroianni@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2002-15925-004 AN - 2002-15925-004 AU - Powell, Shawn AU - Plamondon, Roger AU - Retzlaff, Paul T1 - Screening cognitive abilities in adults with developmental disabilities: Correlations of the K-BIT, PPVT-3, WRAT-3, and CVLT. JF - Journal of Developmental and Physical Disabilities JO - Journal of Developmental and Physical Disabilities JA - J Dev Phys Disabil Y1 - 2002/09// VL - 14 IS - 3 SP - 239 EP - 246 CY - Germany PB - Springer SN - 1056-263X SN - 1573-3580 AD - Powell, Shawn, Dept. of Behavioral Sciences & Leadership, Cheyenne, WY, US N1 - Accession Number: 2002-15925-004. Other Journal Title: Journal of the Multihandicapped Person. Partial author list: First Author & Affiliation: Powell, Shawn; United States Air Force Academy, CO, US. Release Date: 20020911. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Ability; Developmental Disabilities; Intelligence Measures; Statistical Correlation; Statistical Validity. Minor Descriptor: Peabody Picture Vocabulary Test; Screening Tests; Wide Range Achievement Test. Classification: Clinical Psychological Testing (2224); Developmental Disorders & Autism (3250). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Tests & Measures: Kaufman Brief Intelligence Test. Methodology: Empirical Study. References Available: Y. Page Count: 8. Issue Publication Date: Sep, 2002. AB - Administered a screening battery composed of the Kaufman Brief Intelligence Test (K-BIT; A. S. Kaufman & N. L. Kaufman, 1990), Peabody Picture Vocabulary Test-Revised (PPVT-3; L. Dunn & L. Dunn, 1981), Wide Range Achievement Test-Revised (WRAT-3; S. Jastak & G. S. Wilkinson, 1984), and the California Verbal Learning Test (CVLT; D. D. Delis et al, 1987) to a population of adults with developmental disabilities (aged 18-49 yrs) residing in an intermediate care facility/mental retardation. The cognitive areas investigated were general ability, receptive vocabulary, achievement, and verbal memory. Of primary interest were the correlations between these instruments when administered to this population. The correlations between the K-BIT, PPVT-3, and WRAT-3 were direct and strong, ranging from .72 to .98, whereas the correlations between these tests and the CVLT were direct and moderate, ranging from .45 to .69. Findings support the convergent validity of the K-BIT, PPVT-3, and WRAT-3, and the divergent validity of the CVLT when administered to adults with developmental disabilities. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - correlation KW - convergent & divergent validity KW - Peabody Picture Vocabulary Test KW - Wide Range Achievement Test KW - California Verbal Learning Test KW - Kaufman Brief Intelligence Test KW - developmental disabilities KW - 2002 KW - Cognitive Ability KW - Developmental Disabilities KW - Intelligence Measures KW - Statistical Correlation KW - Statistical Validity KW - Peabody Picture Vocabulary Test KW - Screening Tests KW - Wide Range Achievement Test KW - 2002 DO - 10.1023/A:1016084604822 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2002-15925-004&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Campbell, W. Keith AU - Foster, Craig A. AU - Finkel, Eli J. T1 - Does Self-Love Lead to Love for Others? A Story of Narcissistic Game Playing. JO - Journal of Personality & Social Psychology JF - Journal of Personality & Social Psychology Y1 - 2002/08// VL - 83 IS - 2 M3 - Article SP - 340 EP - 354 SN - 00223514 AB - Five studies investigated the links among narcissism, self-esteem, and love. Across all studies, narcissism was associated primarily with a game-playing love style. This link was found in reports of general love styles (Study 1a) and of love in ongoing romantic relationships (Studies 1b-3, 5). Narcissists' game playing love style was the result of a need for power and autonomy (Study 2) and was linked with greater relationship alternatives and lesser commitment (Study 3). Finally, narcissists' self-reports of game playing were confirmed by their partners in past and current relationships (Studies 4, 5). In contrast, self-esteem was negatively linked to manic love and positively linked to passionate love across studies. Implications for the understanding of narcissism in relationships are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Personality & Social Psychology is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERPERSONAL relations KW - NARCISSISM KW - SELF-esteem KW - LOVE KW - EGOISM N1 - Accession Number: 7053943; Campbell, W. Keith 1; Email Address: wkc@uga.edu; Foster, Craig A. 2; Finkel, Eli J. 3; Affiliations: 1: University of Georgia; 2: United States Air Force Academy; 3: Carnegie Mellon University; Issue Info: Aug2002, Vol. 83 Issue 2, p340; Thesaurus Term: INTERPERSONAL relations; Subject Term: NARCISSISM; Subject Term: SELF-esteem; Subject Term: LOVE; Subject Term: EGOISM; Number of Pages: 15p; Illustrations: 2 Diagrams, 2 Charts; Document Type: Article L3 - 10.1037//0022-3514.83.2.340 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=7053943&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 106804619 T1 - Do mental disorders matter? A study of absenteeism among care seeking Gulf War veterans with ill defined conditions and musculoskeletal disorders. AU - Dremsa TL AU - Engel CC Jr. AU - Liu X AU - Johantgen M AU - Smith S Y1 - 2002/08// N1 - Accession Number: 106804619. Language: English. Entry Date: 20030207. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Blind Peer Reviewed; Europe; Expert Peer Reviewed; Peer Reviewed; UK & Ireland. NLM UID: 9422759. KW - Absenteeism KW - Mental Disorders -- Epidemiology KW - Musculoskeletal Diseases -- Psychosocial Factors KW - Occupational Diseases -- Psychosocial Factors KW - Persian Gulf Syndrome -- Psychosocial Factors KW - Veterans -- Psychosocial Factors KW - Patient Attitudes KW - Male KW - Female KW - Adult KW - Cross Sectional Studies KW - Surveys KW - Evaluation Research KW - International Classification of Diseases KW - Statistical Significance KW - Data Analysis Software KW - Descriptive Statistics KW - Demography KW - Dependent Variable KW - United States KW - Human SP - 532 EP - 536 JO - Occupational & Environmental Medicine JF - Occupational & Environmental Medicine JA - OCCUP ENVIRON MED VL - 59 IS - 8 PB - BMJ Publishing Group AB - AIMS: To investigate the extent that common psychological conditions contribute to lost work among individuals with musculoskeletal and ill defined conditions. METHODS: Cross sectional health and work related survey evaluating Gulf War veterans seeking Department of Defense health care for Gulf War related health concerns. Ordered probit models were used to study whether a provider diagnosed musculoskeletal condition (ICD-9 codes 710-739) or 'signs, symptoms, and ill defined conditions' (ICD-9 codes 780-799) have an effect on recent lost work over the previous 90 days in the presence of one or more psychological conditions (ICD-9 codes 290-320) after controlling for sociodemographic variables. RESULTS: Bivariate analyses revealed that musculoskeletal conditions, ill defined conditions, and psychological conditions were positively associated with lost work. Multivariate analyses showed an independent effect of both psychological conditions and musculoskeletal conditions. A significant interaction existed between psychological conditions and musculoskeletal conditions: the presence of a coexisting psychological condition considerably increased the likelihood that a musculoskeletal disorder resulted in lost work, or vice versa. CONCLUSIONS: Psychological conditions appear to be an important contributor to absenteeism among individuals with musculoskeletal and ill defined conditions. A limitation of the cross sectional design was the inability to sequence the onset of conditions. SN - 1351-0711 AD - United States Air Force, NC, 12242 Netherwood Ln, San Antonio, TX 78253; tdresma@satx.rr.com U2 - PMID: 12151609. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106804619&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 106790147 T1 - College coaches corner. Learning from each other: training to increase power. AU - Hedrick A AU - Jones K AU - Rogers R AU - Dahoda J Y1 - 2002/08//2002 Aug N1 - Accession Number: 106790147. Language: English. Entry Date: 20030110. Revision Date: 20150818. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Muscle Strengthening -- Methods KW - Exercise Intensity KW - Athletes, College KW - Athletic Training -- Methods SP - 25 EP - 27 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 24 IS - 4 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - United States Air Force Academy UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106790147&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 106790135 T1 - Manipulating strength and conditioning programs to improve athleticism. AU - Hedrick A Y1 - 2002/08//2002 Aug N1 - Accession Number: 106790135. Language: English. Entry Date: 20030110. Revision Date: 20150818. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Muscle Strengthening -- Methods KW - Sport Specific Training KW - Physical Performance KW - Athletic Training -- Methods SP - 71 EP - 74 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 24 IS - 4 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106790135&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Trohalaki, Steven AU - Zellmer, Robert J. AU - Pachter, Ruth AU - Hussain, Saber M. AU - Frazier, John M. T1 - Risk Assessment of High-Energy Chemicals by in Vitro Toxicity Screening and Quantitative Structure-Activity Relationships. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 2002/08// VL - 68 IS - 2 M3 - Article SP - 498 EP - 507 PB - Oxford University Press / USA SN - 10966080 AB - Hydrazine propellants pose a substantial operational concern to the U.S. Air Force and to the aerospace industry because of their toxicity. In our continuing efforts to develop methods for the prediction of the toxicological response to such materials, we have measured in vitro toxicity endpoints for a series of high-energy chemicals (HECs) that were recently proposed as propellants. The HECs considered are structurally diverse and can be classified into four chemical types (hydrazine-based, amino-based, triazoles, and a quaternary ammonium salt), although most are hydrazine derivatives. We measured the following endpoints in primary cultures of isolated rat hepatocytes: mitochondrial function (MTT), lactate dehydrogenase leakage (LDH), generation of reactive oxygen species (ROS), and total glutathione content (GSH). In several instances, effective concentrations (EC) were indeterminate, and only lower limits to the measured endpoints could be ascertained. Using molecular descriptors calculated with a semiempirical molecular orbital method, quantitative structure-activity relationships (QSARs) were derived for MTT (EC25) and for GSH (EC50). Correlation coefficients for 2- and 3-parameter QSARs of about 0.9 enable us to predict the toxicity for similar compounds. Furthermore, except in one case, predicted EC values for the uncertain endpoints were consistent with experiment. Descriptors comprising the QSARs for MTT were consistent with the biophysical mechanism of toxic response found experimentally for hydrazine derivatives. Application of our derived QSARs will assist in predicting toxicity for newly proposed propellants. [ABSTRACT FROM PUBLISHER] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Hydrazine KW - QSAR (Biochemistry) KW - Mitochondria KW - Chemicals KW - Active oxygen KW - high-energy chemicals KW - hydrazine KW - in vitro toxicity KW - QSAR KW - risk assessment N1 - Accession Number: 44406360; Trohalaki, Steven 1; Zellmer, Robert J. 1; Pachter, Ruth 2; Hussain, Saber M. 3; Frazier, John M. 4; Affiliations: 1: Technical Management Concepts, Inc., P.O. Box 340345, Beavercreek, Ohio 45434-0345; 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433-7702; 3: ManTech Environmental Technology, Inc., Dayton, Ohio 45437-0009; 4: Air Force Research Laboratory, Human Effectiveness Directorate, Wright-Patterson Air Force Base, Ohio 45433-7400; Issue Info: Aug2002, Vol. 68 Issue 2, p498; Thesaurus Term: Hydrazine; Thesaurus Term: QSAR (Biochemistry); Thesaurus Term: Mitochondria; Subject Term: Chemicals; Subject Term: Active oxygen; Author-Supplied Keyword: high-energy chemicals; Author-Supplied Keyword: hydrazine; Author-Supplied Keyword: in vitro toxicity; Author-Supplied Keyword: QSAR; Author-Supplied Keyword: risk assessment; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 10p; Illustrations: 3 Diagrams, 4 Charts, 6 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=44406360&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2002-15406-015 AN - 2002-15406-015 AU - Potter, Phillip T. AU - Smith, Bruce W. AU - Strobel, Kari R. AU - Zautra, Alex J. T1 - Interpersonal workplace stressors and well-being: A multi-wave study of employees with and without arthritis. JF - Journal of Applied Psychology JO - Journal of Applied Psychology JA - J Appl Psychol Y1 - 2002/08// VL - 87 IS - 4 SP - 789 EP - 796 CY - US PB - American Psychological Association SN - 0021-9010 SN - 1939-1854 AD - Potter, Phillip T., Langley AFB, Behavioral Sciences, 1 MDOS/SGOH, Langley AFB, VA, US, 23665 N1 - Accession Number: 2002-15406-015. PMID: 12184581 Partial author list: First Author & Affiliation: Potter, Phillip T.; US Air Force, Air Combat Command Headquarters, US. Release Date: 20020807. Correction Date: 20091109. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Arthritis; Stress; Stress Reactions; Well Being; Working Conditions. Minor Descriptor: Prediction; Psychosocial Factors; Working Women. Classification: Physical & Somatoform & Psychogenic Disorders (3290); Working Conditions & Industrial Safety (3670). Population: Human (10); Female (40). Age Group: Adulthood (18 yrs & older) (300); Middle Age (40-64 yrs) (360); Aged (65 yrs & older) (380). Methodology: Empirical Study; Longitudinal Study; Prospective Study. References Available: Y. Page Count: 8. Issue Publication Date: Aug, 2002. Publication History: Accepted Date: Nov 30, 2001; Revised Date: Nov 23, 2001; First Submitted Date: Apr 2, 2001. Copyright Statement: American Psychological Association. 2002. AB - The within-person influence of interpersonal stressors on affective well-being and physical well-being was investigated for 109 women with and without arthritis. Participants were interviewed on a weekly basis for 12 consecutive weeks, and the prospective data were analyzed by using hierarchical linear modeling. Overall, interpersonal workplace stressors independently predicted both well-being outcomes. Interpersonal stressors outside the workplace were related to negative affect but not to arthritis symptoms. Compared with healthy controls, arthritis patients' ratings of negative affect were equally reactive to workplace stressors. Neuroticism did not moderate stressor reactivity for either dependent variable but did predict mean levels of negative affect. The data support the hypothesis that the psychosocial environment of the workplace contributes unique effects on well-being. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - interpersonal workplace stressors KW - affective & physical well-being KW - female employees with vs without arthritis KW - stress reactions KW - prediction KW - psychosocial factors KW - workplace environment KW - 2002 KW - Arthritis KW - Stress KW - Stress Reactions KW - Well Being KW - Working Conditions KW - Prediction KW - Psychosocial Factors KW - Working Women KW - 2002 DO - 10.1037/0021-9010.87.4.789 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2002-15406-015&site=ehost-live&scope=site UR - phillip.potter@langley.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 106951436 T1 - What's wrong with this patient?...caput medusae AU - Cartwright BA AU - Gillen PB Y1 - 2002/07// N1 - Accession Number: 106951436. Language: English. Entry Date: 20050507. Revision Date: 20150820. Publication Type: Journal Article; case study; pictorial; tables/charts. Journal Subset: Nursing; Peer Reviewed; USA. NLM UID: 20010080R. KW - Hypertension, Portal -- Complications KW - Varicose Veins KW - Hemorrhage -- Etiology KW - Abdomen -- Blood Supply KW - Hypertension, Portal -- Therapy KW - Hypertension, Portal -- Nursing KW - Varicose Veins -- Surgery KW - Colostomy KW - Hemostatic Techniques KW - Portasystemic Shunt, Surgical KW - Patient Discharge Education KW - Male KW - Aged KW - Inpatients SP - 37 EP - 40 JO - RN JF - RN JA - RN VL - 65 IS - 7 CY - North Olmsted, Ohio PB - Advanstar Communications Inc. SN - 0033-7021 AD - Captain, United States Air Force U2 - PMID: 12136528. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106951436&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 106977592 T1 - College coaches corner. Learning from each other: adjustments to the in-season training program. AU - Hedrick A AU - Rogers R AU - Jones K AU - Dahoda J Y1 - 2002/06//2002 Jun N1 - Accession Number: 106977592. Language: English. Entry Date: 20021115. Revision Date: 20150818. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletic Training -- Methods KW - Athletes, College SP - 17 EP - 18 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 24 IS - 3 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106977592&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 106977612 T1 - Neuromuscular dysfunction as a cause of persistent weakness and/or pain in athletes. AU - Lafky A Y1 - 2002/06//2002 Jun N1 - Accession Number: 106977612. Language: English. Entry Date: 20021115. Revision Date: 20150818. Publication Type: Journal Article; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletic Injuries -- Rehabilitation KW - Pain -- Rehabilitation KW - Muscle Weakness -- Rehabilitation KW - Manipulation, Orthopedic KW - Neuromuscular Control -- Physiology KW - Reflex, Stretch KW - Sprains and Strains -- Rehabilitation SP - 68 EP - 71 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 24 IS - 3 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - United States Air Force, Wright-Patterson Air Force Base, Ohio UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106977612&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2002-06077-011 AN - 2002-06077-011 AU - Samuels, Steven M. AU - Gibb, Randall W. T1 - Self-efficacy assessment and generalization in physical education courses. JF - Journal of Applied Social Psychology JO - Journal of Applied Social Psychology JA - J Appl Soc Psychol Y1 - 2002/06// VL - 32 IS - 6 SP - 1314 EP - 1327 CY - United Kingdom PB - Blackwell Publishing SN - 0021-9029 SN - 1559-1816 AD - Samuels, Steven M., United States Air Force Academy, HQ USAFA/DFBL, 2354 Fairchild Drive, USAF Academy, CO, US, 80840-6228 N1 - Accession Number: 2002-06077-011. Partial author list: First Author & Affiliation: Samuels, Steven M.; United States Air Force Academy, Dept of Behavioral Sciences & Leadership, USAF Academy, CO, US. Other Publishers: Wiley-Blackwell Publishing Ltd. Release Date: 20021030. Correction Date: 20130114. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Conference Information: Annual convention of the American Psychological Society, Jun, 1999, Denver, CO, US. Conference Note: An earlier draft of this paper was presented at the aforementioned conference. Major Descriptor: Competition; Curriculum; Physical Education; Self-Efficacy; Sports. Minor Descriptor: Leadership Qualities; Physical Fitness; Swimming. Classification: Personality Traits & Processes (3120); Sports (3720). Population: Human (10); Male (30). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. References Available: Y. Page Count: 14. Issue Publication Date: Jun, 2002. AB - Physical education courses can have effects that generalize past their immediate task as measured by increases in domain-specific self-efficacy. It was predicted that competitive combative courses like boxing would be more likely to have skills generalize to other domains than noncontact courses like swimming. A Physical Education Self-Efficacy Scale was created that focused on 2 different domains of self-efficacy: 1 specific to the course (physicality), and 1 in a disparate domain (leadership initiative). Students were given the scale before and after the 2 different courses. Results indicate that there were small but significant increases in both subscales for students enrolled in boxing, but not for students enrolled in swimming. Physicality self-efficacy also correlated strongly with performance. Implications and mechanisms for generalization of self-efficacy to neighboring domains are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - self-efficacy KW - physical education courses KW - boxing vs swimming courses KW - physicality self-efficacy KW - leadership initiative KW - assessment KW - generalization KW - competitive vs noncontact courses KW - 2002 KW - Competition KW - Curriculum KW - Physical Education KW - Self-Efficacy KW - Sports KW - Leadership Qualities KW - Physical Fitness KW - Swimming KW - 2002 DO - 10.1111/j.1559-1816.2002.tb01438.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2002-06077-011&site=ehost-live&scope=site UR - Steven.Samuels@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - James, Malcolm AU - Carretta, Thomas R. T1 - g2K. JO - Human Performance JF - Human Performance Y1 - 2002/04// VL - 15 IS - 1/2 M3 - Article SP - 3 EP - 23 PB - Taylor & Francis Ltd SN - 08959285 AB - To answer the questions posed by the organizers of the millennial debate on g, or general cognitive ability, we begin by briefly reviewing its history. We tackle the question of what g is by addressing g as a psychometric score and examining its psychological and physiological correlates. Then tacit knowledge and other non-g characteristics are discussed. Next, we review the practical utility of g in personnel selection and conclude by explaining its importance to both organizations and individuals. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Performance is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTELLECT KW - COGNITION N1 - Accession Number: 6677346; James, Malcolm 1; Carretta, Thomas R. 2; Affiliations: 1: Center for Leadership Studies Our Lady of the Lake University; 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio; Issue Info: 2002, Vol. 15 Issue 1/2, p3; Subject Term: INTELLECT; Subject Term: COGNITION; Number of Pages: 21p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=6677346&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 106960497 T1 - Rehab tips. Neuromuscular reduction and strengthening of the lumbar stabilizers. AU - Wilson E A2 - Tyson A Y1 - 2002/04//2002 Apr N1 - Accession Number: 106960497. Language: English. Entry Date: 20020920. Revision Date: 20150818. Publication Type: Journal Article; pictorial. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Muscle Strengthening KW - Neuromuscular Facilitation KW - Low Back Pain -- Rehabilitation KW - Therapeutic Exercise -- Methods KW - Athletic Training SP - 72 EP - 74 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 24 IS - 2 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - Staff Physical Therapist, United States Air Force, USAF Academy, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106960497&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2002-12134-010 AN - 2002-12134-010 AU - Staal, Mark A. AU - Hughes, Thomas G. T1 - Suicide prediction in the US Air Force: Implications for practice. JF - Professional Psychology: Research and Practice JO - Professional Psychology: Research and Practice JA - Prof Psychol Res Pr Y1 - 2002/04// VL - 33 IS - 2 SP - 190 EP - 196 CY - US PB - American Psychological Association SN - 0735-7028 SN - 1939-1323 AD - Staal, Mark A., United States Air Force Academy, Dept of Behavioral Sciences & Leadership, 2354 Fairchild Drive, CO, US, 80840-6228 N1 - Accession Number: 2002-12134-010. Other Journal Title: Professional Psychology. Partial author list: First Author & Affiliation: Staal, Mark A.; United States Air Force Academy, Dept of Behavioral Sciences & Leadership, CO, US. Release Date: 20020320. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Models; Prediction; Risk Factors; Suicide. Classification: Behavior Disorders & Antisocial Behavior (3230); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study. References Available: Y. Page Count: 7. Issue Publication Date: Apr, 2002. Publication History: Accepted Date: Dec 17, 2001; Revised Date: Dec 17, 2001; First Submitted Date: Aug 2, 2001. Copyright Statement: Public Domain AB - How can psychologists know which of the many variables in an individual's clinical presentation are most salient to that person's suicide risk? Such certainty requires an empirically validated prediction model that is specific to the population served. Data obtained through the U.S. Air Force (USAF) Office of Special Investigations and the USAF Institute for Environment, Safety, and Occupational Health Risk Analysis were analyzed using multivariate strategies of prediction based on an empirically validated model of suicide prediction (G. K. Brown, A. T. Beck, R. A. Steer, & J. R. Grisham, 2000) and suicide completer versus noncompleter status. The usefulness of the model to the USAF sample is discussed, and several factors unique to a military population are highlighted. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - suicide risk KW - prediction KW - models KW - US Air Force personnel KW - 2002 KW - Air Force Personnel KW - Models KW - Prediction KW - Risk Factors KW - Suicide KW - 2002 DO - 10.1037/0735-7028.33.2.190 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2002-12134-010&site=ehost-live&scope=site UR - mark.staal@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2002-02810-006 AN - 2002-02810-006 AU - Campbell, W. Keith AU - Foster, Craig A. T1 - Narcissism and commitment in romantic relationships: An investment model analysis. JF - Personality and Social Psychology Bulletin JO - Personality and Social Psychology Bulletin JA - Pers Soc Psychol Bull Y1 - 2002/04// VL - 28 IS - 4 SP - 484 EP - 495 CY - US PB - Sage Publications SN - 0146-1672 SN - 1552-7433 AD - Campbell, W. Keith, U Georgia, Dept of psychology, Athens, GA, US, 30602 N1 - Accession Number: 2002-02810-006. Partial author list: First Author & Affiliation: Campbell, W. Keith; U Georgia, Dept of Psychology, Athens, GA, US. Release Date: 20020508. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Commitment; Interpersonal Interaction; Narcissism; Romance. Minor Descriptor: Relationship Satisfaction. Classification: Group & Interpersonal Processes (3020). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. References Available: Y. Page Count: 12. Issue Publication Date: Apr, 2002. AB - Two studies examined narcissism and commitment in ongoing romantic relationships. The authors predicted that narcissism would be negatively associated with commitment; that this association would be mediated by the structure of the romantic relationship (i.e., satisfaction, investments, and alternatives) and that the decreased commitment experienced by narcissists would be linked to decreased accommodation. In Study 1, narcissism was found to be negatively related to commitment. Mediational analyses further revealed that this was primarily a result of narcissists' perception of alternatives to their current relationship. Study 2 replicated these findings with an additional measure of alternatives. Again, narcissists reported less commitment to their ongoing romantic relationship. This link was mediated by both perception of alternatives and attention to alternative dating partners. The utility of an interdependence approach to understanding the role of personality in romantic relationships is discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - narcissism KW - commitment KW - romantic relationships KW - relationship structure KW - accommodation KW - 2002 KW - Commitment KW - Interpersonal Interaction KW - Narcissism KW - Romance KW - Relationship Satisfaction KW - 2002 DO - 10.1177/0146167202287006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2002-02810-006&site=ehost-live&scope=site UR - wkc@arches.uga.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2002-06607-009 AN - 2002-06607-009 AU - Brey, R. L. AU - Holliday, S. L. AU - Saklad, A. R. AU - Navarrete, M. G. AU - Hermosillo-Romo, D. AU - Stallworth, C. L. AU - Valdez, C. R. AU - Escalante, A. AU - del Rincón, I. AU - Gronseth, G. AU - Rhine, C. B. AU - Padilla, P. AU - McGlasson, D. T1 - Neuropsychiatric syndromes in lupus: Prevalence using standardized definitions. JF - Neurology JO - Neurology Y1 - 2002/04// VL - 58 IS - 8 SP - 1214 EP - 1220 CY - US PB - Lippincott Williams & Wilkins SN - 0028-3878 SN - 1526-632X AD - Brey, R. L., Dept of Medicine, Div of Neurology, 7703 Floyd Curl Drive #7883, San Antonio, TX, US, 78229-3900 N1 - Accession Number: 2002-06607-009. PMID: 11971089 Partial author list: First Author & Affiliation: Brey, R. L.; Audie L. Murphy Veterans Association Hosp, Dept of Medicine, Div of Neurology, San Antonio, TX, US. Release Date: 20030217. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Lupus; Neuropsychiatry; Risk Factors; Syndromes. Minor Descriptor: Cardiovascular Disorders; Cognitive Ability; Immunologic Disorders. Classification: Physical & Somatoform & Psychogenic Disorders (3290). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360); Aged (65 yrs & older) (380). Methodology: Empirical Study. References Available: Y. Page Count: 7. Issue Publication Date: Apr, 2002. AB - Examined risk factors associated with neuropsychiatric syndromes in lupus erythemastosus syndrome (NPSLE). 128 adults (aged 21-71 yrs) diagnosed with NPSLE underwent tests assessing cardiovascular health, current medications, current NPSLE disease activity and damage, cognitive functioning, and immunologic functioning. Results show that 1 or more NPSLE syndromes were present in 80% of subjects. Headaches, polyneuropathy, mild to moderate cognitive dysfunction, anxiety disorder, and major depressive-like disorder were the most common diagnoses reported. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - neuropsychiatric syndromes KW - lupus erythemastosus syndrome KW - cardiovascular health KW - cognitive ability KW - immunologic functioning KW - risk factors KW - 2002 KW - Lupus KW - Neuropsychiatry KW - Risk Factors KW - Syndromes KW - Cardiovascular Disorders KW - Cognitive Ability KW - Immunologic Disorders KW - 2002 DO - 10.1212/WNL.58.8.1214 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2002-06607-009&site=ehost-live&scope=site UR - brey@uthscsa.edu DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Coletta, Damon T1 - Historical Encyclopedia of U.S. Presidential Use of Force, 1789-2000. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) J1 - Armed Forces & Society (0095327X) PY - 2002/03// Y1 - 2002/03// VL - 28 IS - 3 M3 - Book Review SP - 513 EP - 515 PB - Sage Publications Inc. SN - 0095327X AB - The article reviews the book "Historical Encyclopedia of U.S. Presidential Use of Force, 1789-2000," edited by Karl R. DeRouen Jr. KW - HISTORICAL Encyclopedia of US Presidential Use of Force 1789-2000 (Book) KW - DEROUEN, Karl R. KW - EXECUTIVE power KW - NONFICTION N1 - Accession Number: 21054929; Source Information: Mar2002, Vol. 28 Issue 3, p513; Subject Term: HISTORICAL Encyclopedia of US Presidential Use of Force 1789-2000 (Book); Subject Term: DEROUEN, Karl R.; Subject Term: EXECUTIVE power; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; ; Full Text Word Count: 1008; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=21054929&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Morgan, P.E. AU - Visbal, M.R. AU - Sadayappan, P. T1 - Development and Application of a Parallel Implicit Solver for Unsteady Viscous Flows. JO - International Journal of Computational Fluid Dynamics JF - International Journal of Computational Fluid Dynamics Y1 - 2002/03// VL - 16 IS - 1 M3 - Article SP - 21 EP - 36 SN - 10618562 AB - This work investigates the performance and application of a parallel version of a three-dimensional second-order time accurate Navier-Stokes solver based on an implicit approximate-factorization Beam-Warming algorithm. A systematic incremental approach for parallelizing the serial code was developed which ensures that the parallel version of the code produces identical results to the original serial code. The current parallel scheme decomposes the grid using two-dimensional multipartitioning to evenly distribute the work across multiple processors with parallel communication via Message-Passing Interface (MPI) library. The code's performance has been assessed on three supercomputers: the IBM SP2, IBM SP3 and the Silicon Graphics Origin 2000. The solver is validated for Couette flow, and both steady and unsteady flow over a circular cylinder. Additional applications include both two- and three-dimensional flow over a stationary and a rotationally oscillating circular cylinder. This new solver enables the efficient simulation of large-scale unsteady viscous flows employing grids containing on the order of 10 7 points using available parallel supercomputers. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Computational Fluid Dynamics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Numerical analysis KW - Navier-Stokes equations KW - Fluid dynamics KW - Algorithms KW - Viscous flow KW - Circular cylinder KW - Computational fluid dynamics KW - Fluids KW - MPI KW - Navier-Stokes KW - Parallel processing KW - Rotational oscillating circular cylinder N1 - Accession Number: 11548354; Morgan, P.E. 1; Visbal, M.R. 1; Email Address: visbal@vaa.wpafb.af.mil; Sadayappan, P. 2; Affiliations: 1: Air Force Research Laboratory, Bldg 146, Rm 255, 2210 Eighth St, Wright-Patterson AFB, OH 45433-7521, USA; 2: Department of Computer and Information Sciences, 595 Dreese Lab, 2015 Neil Avenue, The Ohio State University, Columbus, OH 43210, USA; Issue Info: Mar2002, Vol. 16 Issue 1, p21; Thesaurus Term: Numerical analysis; Subject Term: Navier-Stokes equations; Subject Term: Fluid dynamics; Subject Term: Algorithms; Subject Term: Viscous flow; Author-Supplied Keyword: Circular cylinder; Author-Supplied Keyword: Computational fluid dynamics; Author-Supplied Keyword: Fluids; Author-Supplied Keyword: MPI; Author-Supplied Keyword: Navier-Stokes; Author-Supplied Keyword: Parallel processing; Author-Supplied Keyword: Rotational oscillating circular cylinder; Number of Pages: 16p; Illustrations: 3 Color Photographs, 4 Diagrams, 11 Charts, 19 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=11548354&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Steel, Robert P. AU - Rentsch, Joan R. AU - Hendrix, William H. T1 - CROSS-LEVEL REPLICATION AND EXTENSION OF STEEL AND RENTSCH'S (1995) LONGITUDINAL ABSENCE FINDINGS. JO - Journal of Business & Psychology JF - Journal of Business & Psychology Y1 - 2002///Spring2002 VL - 16 IS - 3 M3 - Article SP - 447 EP - 456 SN - 08893268 AB - Absenteeism findings published by Steel and Rentsch (1995) were replicated and extended by correlating attitudinal, personal-demographic, and job stress variables with 34 months of work group absenteeism scores obtained on employees of a U.S. federal mint. Attitudinal and job stress results were consistent with previous findings, but results involving personal-demographic variables were not. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Business & Psychology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSENTEEISM (Labor) KW - JOB stress KW - JOB satisfaction KW - INDUSTRIAL psychology KW - LONGITUDINAL method KW - STRESS (Psychology) KW - absenteeism KW - job involvement. KW - job satisfaction KW - job stress KW - longitudinal study N1 - Accession Number: 12428596; Steel, Robert P. 1; Rentsch, Joan R. 2; Hendrix, William H. 3; Affiliations: 1: University of Michigan-Dearborn.; 2: University of Tennessee.; 3: United States Air Force Academy.; Issue Info: Spring2002, Vol. 16 Issue 3, p447; Thesaurus Term: ABSENTEEISM (Labor); Thesaurus Term: JOB stress; Thesaurus Term: JOB satisfaction; Thesaurus Term: INDUSTRIAL psychology; Subject Term: LONGITUDINAL method; Subject Term: STRESS (Psychology); Author-Supplied Keyword: absenteeism; Author-Supplied Keyword: job involvement.; Author-Supplied Keyword: job satisfaction; Author-Supplied Keyword: job stress; Author-Supplied Keyword: longitudinal study; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12428596&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Fullerton, Richard L. AD - US Air Force Academy T1 - Using Auctions to Reward Tournament Winners: Theory and Experimental Investigations JO - RAND Journal of Economics JF - RAND Journal of Economics Y1 - 2002///Spring VL - 33 IS - 1 SP - 62 EP - 84 SN - 07416261 N1 - Accession Number: 0606666 Partial authors List; ; Keywords: Auctions; Bid; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 200206 N2 - This article explores theoretical and experimental implications of using auctions to reward winners of research tournaments. This process is a hybrid of the research tournament for a prize and a first-price auction held after the research is complete. The bids in the auction consist of a vector of both quality of the innovation and price. The experimental evidence supports the hypothesis that conducting auctions at the end of research tournaments will generally reduce the sponsor's prize expenditure relative to fixed-prize research tournaments. The potential importance of these results to the U.S. Department of Defense acquisition process is emphasized. KW - Auctions D44 KW - National Government Expenditures and Related Policies: Procurement H57 KW - Intellectual Property and Intellectual Capital O34 L3 - http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291756-2171/issues UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0606666&site=ehost-live&scope=site UR - http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291756-2171/issues DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 2009-12816-009 AN - 2009-12816-009 AU - Beer, Jeremy AU - Blakemore, Colin AU - Previc, Fred H. AU - Liotti, Mario T1 - Areas of the human brain activated by ambient visual motion, indicating three kinds of self-movement. JF - Experimental Brain Research JO - Experimental Brain Research JA - Exp Brain Res Y1 - 2002/03// VL - 143 IS - 1 SP - 78 EP - 88 CY - Germany PB - Springer SN - 0014-4819 SN - 1432-1106 AD - Beer, Jeremy, Henry M. Jackson Foundation for the Advancement of Military Medicine, US Naval Health Research Center Detachment, 8301 Navy Road, Brooks Air Force Base, TX, US, 78235-5365 N1 - Accession Number: 2009-12816-009. PMID: 11907693 Partial author list: First Author & Affiliation: Beer, Jeremy; The Henry M. Jackson Foundation for the Advancement of Military Medicine, US Naval Health Research Center Detachment, Brooks Air Force Base, TX, US. Release Date: 20101004. Publication Type: Journal (0100), Peer-Reviewed Status-Unknown (0130). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Blakemore, Colin. Major Descriptor: Brain; Motion Perception; Positron Emission Tomography. Classification: Neuropsychology & Neurology (2520). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Brain Imaging; Empirical Study; Quantitative Study. References Available: Y. Page Count: 11. Issue Publication Date: Mar, 2002. Publication History: First Posted Date: Jan 24, 2002; Accepted Date: Oct 18, 2001; First Submitted Date: Dec 20, 2000. Copyright Statement: Springer-Verlag. 2002. AB - In a positron emission tomography (PET) study, a very large visual display was used to simulate continuous observer roll, yaw, and linear movement in depth. A global analysis based on all three experiments identified brain areas that responded to the three conditions’ shared characteristic of coherent, wide-field motion versus incoherent motion. Several areas were identified, in the posterior-inferior temporal cortex (Brodmann area 37), paralimbic cortex, pulvinar, and midbrain tegmentum. In addition, occipital region KO was sensitive to roll and expansion but not yaw (i.e., coherent displays containing differential flow). Continuous ambient motion did not activate V5/MT selectively. The network of sites responding specifically to coherent motion contrasted with the extensive, contiguous activation that both coherent and incoherent motion elicited in visual areas V1, V2, and V3. The coherent motion mechanisms, furthermore, extended beyond the traditional dorsal pathway proposed to account for visual motion processing, and included subcortical and limbic structures, which are implicated in polysensory processing, posture regulation, and arousal. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - human brain KW - ambient visual motion KW - self movements KW - positron emission tomography KW - 2002 KW - Brain KW - Motion Perception KW - Positron Emission Tomography KW - 2002 U1 - Sponsor: United States Air Force Research Laboratory’s, Flight Motion Effects Branch, US. Other Details: Biodynamics and Protection Division. Recipients: No recipient indicated U1 - Sponsor: US Naval Health Research Center, US. Recipients: No recipient indicated U1 - Sponsor: Air Force Office of Scientific Research. Recipients: Blakemore, Colin DO - 10.1007/s00221-001-0947-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-12816-009&site=ehost-live&scope=site UR - Jeremy.Beer@navy.brooks.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2002-02073-019 AN - 2002-02073-019 AU - Brockway, Jennifer Howard AU - Carlson, Kieth A. AU - Jones, Steven K. AU - Bryant, Fred B. T1 - Development and validation of a scale for measuring cynical attitudes toward college. JF - Journal of Educational Psychology JO - Journal of Educational Psychology JA - J Educ Psychol Y1 - 2002/03// VL - 94 IS - 1 SP - 210 EP - 224 CY - US PB - American Psychological Association SN - 0022-0663 SN - 1939-2176 AD - Carlson, Kieth A., HQ USAFA/DFBL, 2354 Fairchild Drive, Suite 6L101B, USAF Academy, CO, US, 80840-6228 N1 - Accession Number: 2002-02073-019. Partial author list: First Author & Affiliation: Brockway, Jennifer Howard; United States Air Force, Dept of Behavioral Sciences & Leadership, CO, US. Other Publishers: Warwick & York. Release Date: 20020320. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cynicism; Rating Scales; Student Attitudes; Test Construction; Test Validity. Minor Descriptor: College Students. Classification: Educational Measurement (2227); Classroom Dynamics & Student Adjustment & Attitudes (3560). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. References Available: Y. Page Count: 15. Issue Publication Date: Mar, 2002. Publication History: Accepted Date: Jun 10, 2001; Revised Date: Jun 7, 2001; First Submitted Date: Oct 4, 2000. Copyright Statement: Public Domain AB - The purpose of this research was to develop and validate a new measure of undergraduate student cynicism--the Cynical Attitudes Toward College Scale (CATCS). In Study 1, the authors split data collected from 1,049 students representing 3 diverse college populations into development and confirmation samples. Using confirmatory factor analysis, the authors (a) developed an 18-item measurement model reflecting 4 reliable dimensions of student cynicism-policy, academic, social, and institutional; (b) demonstrated cross-sample generalizability; and (c) established convergent and discriminant validity. In Study 2, the authors showed the CATCS's ability to discriminate among diverse groups of students predicted to differ on the 4 subscales as well as to predict future academic outcomes. Practical applications of the CATCS are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - test development KW - test validity KW - Cynical Attitudes Toward College Scale KW - college students KW - 2002 KW - Cynicism KW - Rating Scales KW - Student Attitudes KW - Test Construction KW - Test Validity KW - College Students KW - 2002 DO - 10.1037/0022-0663.94.1.210 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2002-02073-019&site=ehost-live&scope=site UR - Kieth.Carlson@usafa.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Ganguly, B. N. AU - Haaland, P. D. AU - Bletzinger, P. AU - Garscadden, A. T1 - Two-Color Mie-Scattering Images of Uncorrelated and Correlated Trapped Dust in Low-Frequency Helium Discharges. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2002/02//Feb2002 Part 1 VL - 30 IS - 1 M3 - Article SP - 90 EP - 91 SN - 00933813 AB - Simultaneous two-color Mie scattering images from the particle size dependent self-assembled trapped dust particles in a low-frequency helium discharge have been measured. The dynamics of the dust ensemble during the discharge switch-off suggests that the long range order in a correlated dust phase can reduce the ion-ion and the electron-ion recombination rates on dust surface by several orders of magnitudes compared to the ambipolar or to free diffusion rates. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MIE scattering KW - LIGHT -- Scattering KW - DUST KW - DUSTY plasmas KW - PLASMA (Ionized gases) KW - ION recombination KW - GLOW discharges KW - ELECTRIC discharges KW - ELECTRIC fields KW - Glow discharge KW - laser light scattering KW - self-assembled complex N1 - Accession Number: 27151601; Ganguly, B. N. 1; Email Address: biswa.ganguly@wpath.af.mil; Haaland, P. D. 1,2; Bletzinger, P. 1,3; Garscadden, A. 1; Affiliations: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7919 USA; 2: Mobium Em., Louisville, CO 80027 USA; 3: ISSI, Dayton OH 45440 USA; Issue Info: Feb2002 Part 1, Vol. 30 Issue 1, p90; Subject Term: MIE scattering; Subject Term: LIGHT -- Scattering; Subject Term: DUST; Subject Term: DUSTY plasmas; Subject Term: PLASMA (Ionized gases); Subject Term: ION recombination; Subject Term: GLOW discharges; Subject Term: ELECTRIC discharges; Subject Term: ELECTRIC fields; Author-Supplied Keyword: Glow discharge; Author-Supplied Keyword: laser light scattering; Author-Supplied Keyword: self-assembled complex; Number of Pages: 2p; Illustrations: 2 Diagrams; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=27151601&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 106916762 T1 - Pathogenesis and treatment of rhabdomyolysis. AU - Rupert SA Y1 - 2002/02// N1 - Accession Number: 106916762. Language: English. Entry Date: 20020419. Revision Date: 20150819. Publication Type: Journal Article; case study; tables/charts. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. NLM UID: 8916634. KW - Rhabdomyolysis KW - Rhabdomyolysis -- Etiology KW - Rhabdomyolysis -- Physiopathology KW - Rhabdomyolysis -- Therapy KW - Rhabdomyolysis -- Diagnosis KW - Rhabdomyolysis -- Symptoms KW - Rhabdomyolysis -- Complications KW - Fluid Therapy KW - Cell Death KW - Adult KW - Male SP - 82 EP - 87 JO - Journal of the American Academy of Nurse Practitioners JF - Journal of the American Academy of Nurse Practitioners JA - J AM ACAD NURSE PRACT VL - 14 IS - 2 CY - Malden, Massachusetts PB - Wiley-Blackwell AB - PURPOSETo provide clinicians in primary and acute care settings with information on the evaluation, diagnosis, and treatment of rhabdomyolysis.DATA SOURCESSelected review articles from print and electronic sources, and a case study.CONCLUSIONSRhabdomyolysis is a common disorder, which may result from a large variety of diseases, trauma, or toxic insults to skeletal muscle. It is caused by skeletal muscle injury and results in the release of muscle contents (i.e., myoglobin) into the plasma. Muscular, urinary, and general internal disturbances are the three areas where signs and symptoms occur.IMPLICATIONS FOR PRACTICEClinical signs and symptoms vary widely. Associated life-threatening complications include acute renal failure, cardiac arrhythmias and arrest, disseminated intravascular coagulation, and compartment syndrome. Early recognition and treatment in the acute phase of rhabdomyolysis are keys to successful outcomes and an excellent recovery. SN - 1041-2972 AD - Major, United States Air Force, University of Incarnate Word, San Antonio, TX; srupert@flash.net U2 - PMID: 11892540. DO - 10.1111/j.1745-7599.2002.tb00095.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106916762&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 106703681 T1 - College coaches corner. Learning from each other: sources of new information. AU - Hedrick A AU - Rogers R AU - Jones K AU - Dahoda J Y1 - 2002/02//2002 Feb N1 - Accession Number: 106703681. Language: English. Entry Date: 20040220. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Muscle Strengthening KW - Athletic Training KW - Athletes, College KW - Information Resources KW - Coaches, Athletic SP - 48 EP - 49 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 24 IS - 1 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - Health Strength and Conditioning Coach, United States Air Force Academy UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106703681&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Armacost, Andrew P. AU - Barnhart, Cynthia AU - Ware, Keith A. T1 - Composite Variable Formulations for Express Shipment Service Network Design. JO - Transportation Science JF - Transportation Science Y1 - 2002/02// VL - 36 IS - 1 M3 - Article SP - 1 PB - INFORMS: Institute for Operations Research SN - 00411655 AB - In this paper we describe a new approach to solving the express shipment service network design problem. Conventional polyhedral methods for network design and network loading problems do not consistently solve instances of the planning problem we consider. Under a restricted version of the problem, we transform conventional formulations to a new formulation using what we term composite variables. By removing flow decisions as explicit decisions, this extended formulation is cast purely in terms of the design elements. We establish that its linear programming relaxation gives stronger lower bounds than conventional approaches. We apply this composite variable formulation approach to the UPS Next Day Air delivery network and demonstrate potential annual cost savings in the hundreds of millions of dollars. [ABSTRACT FROM AUTHOR] AB - Copyright of Transportation Science is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHIPMENT of goods KW - DELIVERY of goods KW - TRANSPORTATION KW - NETWORK analysis (Planning) KW - LINEAR programming KW - AIRLINE industry -- Management KW - COST control N1 - Accession Number: 6312673; Armacost, Andrew P. 1,2,3; Barnhart, Cynthia 1,2,3; Ware, Keith A. 1,2,3; Affiliations: 1: Department of Management, United States Air Force Academy, Colorado Springs, Colorado 80840.; 2: Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139.; 3: Operations Research Group, United Parcel Service, Louisville, Kentucky 40223.; Issue Info: Feb2002, Vol. 36 Issue 1, p1; Thesaurus Term: SHIPMENT of goods; Thesaurus Term: DELIVERY of goods; Thesaurus Term: TRANSPORTATION; Thesaurus Term: NETWORK analysis (Planning); Thesaurus Term: LINEAR programming; Thesaurus Term: AIRLINE industry -- Management; Thesaurus Term: COST control; NAICS/Industry Codes: 481110 Scheduled air transportation; NAICS/Industry Codes: 481111 Scheduled Passenger Air Transportation; NAICS/Industry Codes: 488990 Other support activities for transportation; NAICS/Industry Codes: 488999 All Other Support Activities for Transportation; Number of Pages: 20p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=6312673&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - THES ID - 109875535 T1 - The current practices in injury prevention and safety helmet use in an Air Force medical center. AU - Tuitele BA Y1 - 2002/01// N1 - Accession Number: 109875535. Language: English. Entry Date: 20020830. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Head Injuries -- Prevention and Control KW - Active Duty Personnel KW - Descriptive Research KW - United States Air Force KW - Head Protective Devices -- Utilization KW - Record Review KW - Research, Military KW - United States KW - Human SP - 61 p EP - 61 p JO - Current Practices in Injury Prevention & Safety Helmet Use in an Air Force Medical Center JF - Current Practices in Injury Prevention & Safety Helmet Use in an Air Force Medical Center PB - Uniformed Services University of the Health Sciences AB - Studies show that motorcycle and bicycle helmets reduce injuries and fatalities and lower health care costs. A Department of Defense (DoD) survey conducted in 1995 found that helmet use among active duty military motorcyclists and bicyclists was below the standards set by Healthy People 2000 objectives. In the United States, head injuries are the primary cause of death for both motorcycle crashes (3,500 death per year) and bicycle crashes (900 deaths per year). In addition, approximately one half of rollerblading deaths are due to head injuries. Head injuries account for more than 50,000 deaths annually and the same number of head injury victims are left with disabilities each year. Given these alarming statistics, this researcher wanted to know what primary care providers in the Air Force are doing to educate there patients on head injury prevention. The purpose of this descriptive study was to examine safety helmet use and the current practices in head injury prevention in an Air Force Medical Center. There were a total of 65 active duty members that had diagnosis codes identifying them as having been treated for a head injury at Malcom Grow between January 1, 1998 and November 30, 1999. Of these 65 individuals, data was available for review on 55 of these 65 individuals. The findings from this data was unexpected. Only one of these 55 individuals received head injury in which a helmet is required or recommended. Most head injuries that involved a sport were sustained while playing basketball, football or baseball. Most common head injuries that did not involve a sport were sustained as a result of a fight or assault, or in a motor vehicle accident. AV - Order Info: Graduate and Nursing Dissertations at http://pac.lrc.usuhs.mil/ M1 - MSN AD - United States Air Force Nurse Corp UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109875535&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - CHAP AU - Jennings, William W. AU - Schnatterly, Karen AU - Seguin, Paul J. AD - US Air Force Academy AD - U MN AD - U MN A2 - Hirschey, Mark A2 - John, Kose A2 - Makhija, Anil K. T1 - Institutional Ownership, Information and Liquidity T2 - Innovations in investments and corporate finance PB - Advances in Financial Economics, vol. 7. PB - Amsterdam; New York and Oxford: PB - Elsevier Science, JAI Y1 - 2002/// SP - 41 EP - 71 N1 - Accession Number: 0742445; Reviewed Book ISBN: 0-7623-0897-4; ; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Collective Volume Article; Update Code: 200409 KW - Asset Pricing; Trading Volume; Bond Interest Rates G12 KW - Information and Market Efficiency; Event Studies; Insider Trading G14 KW - Pension Funds; Non-bank Financial Institutions; Financial Instruments; Institutional Investors G23 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0742445&site=ehost-live&scope=site DP - EBSCOhost DB - ecn ER - TY - JOUR T1 - The relationship between participation restrictions and selected clinical measures following anterior cruciate ligament reconstruction. AU - Ross, Michael D. AU - Irrgang, James J. AU - Denegar, Craig R. AU - McCloy, Constance M. AU - Unangst, Edward T. JO - Knee Surgery, Sports Traumatology, Arthroscopy JF - Knee Surgery, Sports Traumatology, Arthroscopy Y1 - 2002/01// VL - 10 IS - 1 SP - 10 EP - 19 SN - 09422056 N1 - Accession Number: 15735261; Author: Ross, Michael D.: 1 email: michael.ross@cannon.af.mil. Author: Irrgang, James J.: 2 Author: Denegar, Craig R.: 3 Author: McCloy, Constance M.: 4 Author: Unangst, Edward T.: 5 ; Author Affiliation: 1 Department of Physical Therapy, 208 W. Casablanca 27th Medical Group, Cannon Air Force Base, NM 88101, USA.: 2 Department of Physical Therapy, School of Health and Rehabilitation Sciences, University of Pittsburgh, Pittsburgh, PA, 15260, USA.: 3 Department of Kinesiology, Orthopedics, and Rehabilitation, Pennsylvania State UniversityUniversity Park, PA 16802, USA.: 4 Physical Therapy Program, Krannert School of Physical Therapy, University of Indianapolis, Indianapolis, IN 46227, USA.: 5 Department of Biology, United States Air Force Academy, Colorado Springs, CO 80840, USA.; No. of Pages: 10; Language: English; Publication Type: Article; Update Code: 20050121 N2 - This study examined the relationship between participation restrictions in activities of daily living and sports following anterior cruciate ligament reconstruction (ACLR) and the status of knee structures, performance-based activity limitations, and impairments. Fifty subjects (36 men, 14 women, age=20.6±1.3 years) at a mean of 31.0±16.3 months following ACLR participated in this study. Participation restrictions in activities of daily living and sports were measured by the combined scores of the Knee Outcome Survey Activities of Daily Living Scale and Sports Activity Scale. The status of knee structures was assessed by determining the number of previously injured structures in the knee and the time from the most recent ACLR to testing. Performance-based activity limitations were assessed with the single leg hop for distance test. Impairments included isokinetic quadriceps function and anterior tibiofemoral joint laxity. Forward stepwise regression analysis revealed that while the number of injured knee structures alone accounted for 47% of the variability in patient-reported participation restrictions, the combination of the number of injured knee structures, time from ACLR, and the hop index provided the most effective estimate of participation restrictions. Isokinetic quadriceps function and KT-1000 side-to-side differences were not entered into the regression model and were not significant predictors of participation restrictions. We recommend that clinicians use caution in assuming that isokinetic quadriceps function and anterior tibiofemoral joint laxity provide an effective estimate of participation restrictions. ABSTRACT FROM AUTHOR KW - *LIGAMENTS KW - *SPORTS KW - *KNEE KW - *WOMEN KW - SURVEYS KW - EVALUATION KW - Anterior cruciate ligament KW - Knee surgery KW - Participation restrictions KW - Rehabilitation UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=15735261&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - GEN AU - Hartson, H. Rex AU - Andre, Terence S. AU - Williges, Robert C. T1 - Criteria For Evaluating Usability Evaluation Methods. JO - International Journal of Human-Computer Interaction JF - International Journal of Human-Computer Interaction Y1 - 2001/12// VL - 13 IS - 4 M3 - Product Review SP - 373 EP - 410 PB - Taylor & Francis Ltd SN - 10447318 AB - The current variety of alternative approaches to usability evaluation methods (UEMs) designed to assess and improve usability in software systems is offset by a general lack of understanding of the capabilities and limitations of each. Practitioners need to know which methods are more effective and in what ways and for what purposes. However, UEMs cannot be evaluated and compared reliably because of the lack of standard criteria for comparison. In this article, we present a practical discussion of factors, comparison criteria, and UEM performance measures useful in studies comparing UEMs. In demonstrating the importance of developing appropriate UEM evaluation criteria, we offer operational definitions and possible measures of UEM performance. We highlight specific challenges that researchers and practitioners face in comparing UEMs and provide a point of departure for further discussion and refinement of the principles and techniques used to approach UEM evaluation and comparison. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Human-Computer Interaction is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER software KW - SYSTEM analysis KW - HUMAN-computer interaction KW - EVALUATION N1 - Accession Number: 6411689; Hartson, H. Rex 1; Andre, Terence S. 2; Williges, Robert C. 3; Affiliations: 1: Department of Computer Science, Virginia Tech; 2: Air Force Research Laboratory; 3: Department of Industrial and Systems Engineering, Virginia Tech; Issue Info: 2001, Vol. 13 Issue 4, p373; Thesaurus Term: COMPUTER software; Thesaurus Term: SYSTEM analysis; Thesaurus Term: HUMAN-computer interaction; Subject Term: EVALUATION; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); Number of Pages: 38p; Document Type: Product Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=6411689&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 106923143 T1 - Effects of CIC hearing aids on auditory localization by listeners with normal hearing. AU - D'Angelo WR AU - Bolia RS AU - Mishler PJ AU - Morris LJ Y1 - 2001/12// N1 - Accession Number: 106923143. Language: English. Entry Date: 20020517. Revision Date: 20150818. Publication Type: Journal Article; research; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 9705610. KW - Hearing Aids -- Evaluation KW - Sound Localization KW - Adult KW - Analysis of Variance KW - Comparative Studies KW - Descriptive Statistics KW - Equipment Design KW - Evaluation Research KW - Female KW - Male KW - Repeated Measures KW - T-Tests KW - Human SP - 1209 EP - 1214 JO - Journal of Speech, Language & Hearing Research JF - Journal of Speech, Language & Hearing Research JA - JSLHR J SPEECH LANG HEAR RES VL - 44 IS - 6 CY - Rockville, Maryland PB - American Speech-Language-Hearing Association AB - An experiment was conducted to determine the effects of completely-in-the-canal (CIC) hearing aids on auditory localization performance. Six normal-hearing listeners localized a 750-ms broadband noise from loudspeakers ranging in azimuth from -180 degrees to +180 degrees and in elevation from -75 degrees to +90 degrees. Independent variables included the presence or absence of the hearing aid and the elevation of the source. Dependent measures included azimuth error, elevation error, and the percentage of trials resulting in a front-back confusion. The findings indicate a statistically significant decrement in localization acuity, both in azimuth and elevation, occasioned by the wearing of CIC hearing aids. However, the magnitude of this decrement was small compared to those typically caused by other ear-canal occlusions, such as earplugs, and would probably not engender mislocalization of real-world sounds. SN - 1092-4388 AD - Air Force Research Laboratory, Wright-Patterson Air Force Base, OH U2 - PMID: 11776359. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106923143&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2001-09674-002 AN - 2001-09674-002 AU - Novy, Pamela AU - Hughes, John R. AU - Callas, Peter T1 - A comparison of recovering alcoholic and non-alcoholic smokers. JF - Drug and Alcohol Dependence JO - Drug and Alcohol Dependence JA - Drug Alcohol Depend Y1 - 2001/12// VL - 65 IS - 1 SP - 17 EP - 23 CY - Netherlands PB - Elsevier Science SN - 0376-8716 AD - Hughes, John R., U Vermont, Dept of Psychiatry, Human Behavioral Pharmacology, Burlington, VT, US, 05401-1419 N1 - Accession Number: 2001-09674-002. PMID: 11714586 Partial author list: First Author & Affiliation: Novy, Pamela; United States Air Force, Minot, ND, US. Release Date: 20020206. Correction Date: 20151207. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Alcoholism; Client Characteristics; Recovery (Disorders); Smoking Cessation; Tobacco Smoking. Minor Descriptor: Drug Dependency; Emotional States; Health Complaints; Nicotine; Social Influences; Social Support; Consequence. Classification: Drug & Alcohol Rehabilitation (3383). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. References Available: Y. Page Count: 7. Issue Publication Date: Dec, 2001. AB - Examined differences between smokers with and without a history of alcohol dependence on variables related to motivation for and barriers to stopping smoking. Ss (mean age 38 yrs) were 31 recovering alcoholic (RA) smokers and 31 age- and sex-matched non-alcoholic (NA) smokers. Ss completed measures of nicotine dependence, social support, mood/affect, readiness to quit smoking, social pressure and physical consequences. Results of the final regression model show that RA and NA smokers did not differ in social support, social pressure, readiness to quit or physical consequences of smoking; however, RA smokers were more dependent on nicotine and had more internal (affective) barriers to cessation than NA smokers. Although these results require replication due to small sample size, they do suggest that RA smokers would especially benefit from medications for nicotine dependence and medications or psychosocial treatments for depression. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - smokers KW - recovering alcoholic KW - alcohol dependence history KW - smoking cessation KW - nicotine dependence KW - social support KW - mood KW - readiness to quit KW - social pressure KW - physical consequences KW - 2001 KW - Alcoholism KW - Client Characteristics KW - Recovery (Disorders) KW - Smoking Cessation KW - Tobacco Smoking KW - Drug Dependency KW - Emotional States KW - Health Complaints KW - Nicotine KW - Social Influences KW - Social Support KW - Consequence KW - 2001 DO - 10.1016/S0376-8716(01)00141-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2001-09674-002&site=ehost-live&scope=site UR - john.hughes@uvm.edu DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 106903639 T1 - Tenecteplase: a promising new fibrinolytic agent. AU - De Jong MJ AU - Sabadie-Garretson W Y1 - 2001/11//Nov/Dec2001 N1 - Accession Number: 106903639. Language: English. Entry Date: 20050817. Revision Date: 20150819. Publication Type: Journal Article; case study; tables/charts. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. NLM UID: 8211489. KW - Fibrinolytic Agents KW - Fibrinolytic Agents -- Contraindications KW - Fibrinolytic Agents -- Administration and Dosage KW - Fibrinolytic Agents -- Adverse Effects KW - Fibrinolytic Agents -- Therapeutic Use KW - Critical Care Nursing KW - Cardiac Patients KW - Middle Age KW - Male SP - 19 EP - 23 JO - Dimensions of Critical Care Nursing JF - Dimensions of Critical Care Nursing JA - DCCN VL - 20 IS - 6 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - Acute coronary syndrome can mean anything from unstable angina to acute myocardial infarction (MI) with ST-segment elevation. Tenecteplase, a new fibrinolytic agent used to treat ST-segment elevation acute Ml, has some advantages over other fibrinolytic agents. This article describes tenecteplase's actions, indications, contraindications, and use. SN - 0730-4625 AD - Intensive Care Unit Clinical Nurse Specialist, United States Air Force UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106903639&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Armacost, Andrew P. AU - Barnhart, Cynthia AU - Ware, Keith A. AU - Wilson, Alysia M. AU - DuPuy, Wynand C. T1 - Planning the United Parcel Service Air Network. JO - Interfaces JF - Interfaces Y1 - 2001/11//Nov/Dec2001 VL - 31 IS - 6 M3 - Article SP - 66 EP - 68 PB - INFORMS: Institute for Operations Research SN - 00922102 AB - This article reports that through a joint research and development effort, the United Parcel Service (UPS) and the Massachusetts Institute of Technology have produced a new optimization-based planning system for designing the UPS aircraft network. The system enables UPS planners to rapidly determine aircraft routes, fleet assignments, and package flows for its time-critical overnight delivery network. The system has yielded significant cost savings. UPS is the world's largest package delivery company, serving over 200 countries and territories, including every address in the United States. Nearly 100 additional airports serve as originating and terminating locations for packages, and more than 160 jet aircraft move nearly one million packages each night. The primary planning objective of the joint effort was to design the next-day air network at minimum cost. A number of groups at UPS face this and similar planning problems. The long range planning group develops network plans for two to 20 years in the future. KW - AIRPLANES KW - AIRPORTS KW - COST control KW - PLANNING KW - AERONAUTICS KW - UNITED States N1 - Accession Number: 17800429; Armacost, Andrew P. 1; Email Address: armacost@alum.mit.edu; Barnhart, Cynthia 2; Email Address: cbarnhart@mit.edu; Ware, Keith A. 3; Email Address: air2kaw@ups.com; Wilson, Alysia M. 3; Email Address: air2amm@ups.com; DuPuy, Wynand C. 3; Email Address: airlwcd@ups.com; Affiliations: 1: Department of Management, United States Air Force Academy, 2354 Fairchild Drive USAFA, Colorado 80840.; 2: Massachusetts institute of Technology, Room 1-229, 77 Massachusetts Avenue Cambridge, Massachusetts 02139.; 3: United Parcel Service Air Group, 1400 Hurstbourne Parkway, Louisville, Kentucky 40223.; Issue Info: Nov/Dec2001, Vol. 31 Issue 6, p66; Thesaurus Term: AIRPLANES; Thesaurus Term: AIRPORTS; Thesaurus Term: COST control; Thesaurus Term: PLANNING; Subject Term: AERONAUTICS; Subject: UNITED States; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 488119 Other Airport Operations; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=17800429&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - AU - Lantry, Douglas N.1,2 T1 - Archives and Collections. JO - Journal of Design History JF - Journal of Design History J1 - Journal of Design History PY - 2001/10// Y1 - 2001/10// VL - 14 IS - 4 CP - 4 M3 - Article SP - 343 EP - 359 SN - 09524649 AB - Spacesuits as museum artefacts have long been considered indestructible because they are made from high-technology modern materials and were designed to operate in a very harsh environment. Therefore, their preservation was not an issue until recently, when they were observed to be seriously deteriorating. By tracing Apollo-era spacesuits' multiple identities as material culture, socially constructed technology and objects of new directions in museum conservation, this article shows how these artefacts can and should be understood in ways other than simply as aerospace equipment. The evocative aspects of dress as modern technology, combined with associations of exploration and exoticism, help give Apollo spacesuits a mystique that captivates museum visitors and enhances these garments as evidence of cultural history. As socially constructed technology, the suits are records of technical cultures within the space programme culture that combined to negotiate their form. Returning to the spacesuit as artefact, this article concludes by describing a project aimed at rescuing spacesuits from decades of deterioration brought on by inadequate understanding and appreciation of their material aspects, which are only now becoming understood as new ground for museum conservators and collections managers. [ABSTRACT FROM AUTHOR] KW - Material culture KW - Museums KW - Historic preservation KW - Space suits KW - Technology -- History KW - Social constructionism KW - conservation KW - history of technology KW - material culture studies KW - museums KW - social construction of technology KW - spacesuits N1 - Accession Number: 33221548; Authors: Lantry, Douglas N. 1,2; Affiliations: 1: United States Air Force Museum; 2: University of Delaware, Emeritus; Subject: Space suits; Subject: Technology -- History; Subject: Material culture; Subject: Museums; Subject: Social constructionism; Subject: Historic preservation; Author-Supplied Keyword: conservation; Author-Supplied Keyword: history of technology; Author-Supplied Keyword: material culture studies; Author-Supplied Keyword: museums; Author-Supplied Keyword: social construction of technology; Author-Supplied Keyword: spacesuits; Number of Pages: 17p; Illustrations: 13 Black and White Photographs, 2 Diagrams; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=asu&AN=33221548&site=ehost-live&scope=site DP - EBSCOhost DB - asu ER - TY - JOUR ID - 106891909 T1 - College coaches corner. Learning from each other: unique aspects of your training programs. AU - Hedrick A AU - Jones K AU - Dahoda J AU - Rogers R Y1 - 2001/10//2001 Oct N1 - Accession Number: 106891909. Language: English. Entry Date: 20020118. Revision Date: 20150818. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletic Training -- Methods KW - Colleges and Universities KW - Muscle Strengthening -- Methods SP - 60 EP - 61 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 23 IS - 5 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106891909&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2013-24482-003 AN - 2013-24482-003 AU - Harville, Donald L. T1 - Review of Hidden value: How great companies achieve extraordinary results with ordinary people. JF - Personnel Psychology JO - Personnel Psychology JA - Pers Psychol Y1 - 2001/09// VL - 54 IS - 3 SP - 725 EP - 728 CY - United Kingdom PB - Blackwell Publishing SN - 0031-5826 SN - 1744-6570 N1 - Accession Number: 2013-24482-003. Partial author list: First Author & Affiliation: Harville, Donald L.; Air Force Research Laboratory, TX, US. Other Publishers: Wiley-Blackwell Publishing Ltd. Release Date: 20130722. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Review-Book. Language: English. Major Descriptor: Achievement; Management; Organizational Climate; Values. Minor Descriptor: Business Organizations; Personnel; Strategies. Classification: Management & Management Training (3640). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Reviewed Item: O’Reilly, Charles A. 33; Pfeffer, Jeffrey. Hidden value: How great companies achieve extraordinary results with ordinary people=Boston: Harvard Business, 320 pages, $27.50; 2000. Page Count: 4. Issue Publication Date: Sep, 2001. AB - Reviews the book, Hidden Value: How Great Companies Achieve Extraordinary Results with Ordinary People by Charles A. O’Reilly III and Jeffrey Pfeffer (2000). The authors of Hidden Value convincingly assert that winning companies fully use the talent of their people and that intellectual capital and knowledge are increasingly important in today’s business world. They also assert that successful companies (a) are aligned and consistent in applying people-centered practices that express their core values, (b) invest in training their employees, and (c) do not treat employees as disposable. This values-based view of strategy gives senior management the role of managing the values and culture of the firm. This contrasts with conventional roles, where management monitors alignment and compliance with its strategy. Case studies of eight successful companies and one unsuccessful company are given. Based on the strengths of the cases and the models presented, this book is strongly recommend for both internal and external consultants and for readers interested in various successful HR practices. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - successful companies KW - values KW - culture KW - management KW - strategy KW - employees KW - 2001 KW - Achievement KW - Management KW - Organizational Climate KW - Values KW - Business Organizations KW - Personnel KW - Strategies KW - 2001 U2 - O’Reilly, Charles A. 33; Pfeffer, Jeffrey. (2000); Hidden value: How great companies achieve extraordinary results with ordinary people; Boston: Harvard Business, 320 pages, $27.50 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-24482-003&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Nong Ye AU - Giordano, Joseph AU - Feldman, John T1 - A PROCESS CONTROL APPROACH TO CYBER ATTACK DETECTION. JO - Communications of the ACM JF - Communications of the ACM Y1 - 2001/08// VL - 44 IS - 8 M3 - Article SP - 76 EP - 82 PB - Association for Computing Machinery SN - 00010782 AB - This article focuses on a process control approach to detection of cyber attack. A cyber attack is an attack on a computer and network system, consisting of computer actions such as remote or local connection, computer file access, or program execution with the intent to compromise the secure operation of the computer and network systems. When placing information assurance in the context of process control, attack prevention is analogous to system planning. Attack detection, isolation, assessment, and reaction are aspects of diagnostic control. In this article, a process control approach to system modeling for information assurance is illustrated, which leads to a Cyber Attack Control System. A model-based design of attack-detection techniques is presented to demonstrate how a process model of a computer and network system supports cyber attack detection. The process control approach to cyber attack detection is promising for several reasons. Fundamentally, it provides a conceptual framework to model a computer and network system in which both normal and attack activities occur. As the system is modeled from a process control perspective, well-established techniques in process control can be applied to overcome problems with existing techniques. KW - CYBERTERRORISM KW - COMPUTER crimes KW - PROCESS control KW - CONTROL theory (Mathematics) KW - COMPUTER security KW - DATA protection KW - PREVENTION N1 - Accession Number: 12026082; Nong Ye 1; Email Address: nongye@asu.edu; Giordano, Joseph 2; Email Address: giordanoj@rl.af.mil; Feldman, John 3; Email Address: feldmanj@rl.af.mil; Affiliations: 1: Associate Professor at Arizona State University.; 2: Technical Advisor at the U. S. Air Force Research Laboratory in Rome, NY.; 3: Program Manager at the U. S. Air Force Research Laboratory in Rome, NY.; Issue Info: Aug2001, Vol. 44 Issue 8, p76; Thesaurus Term: CYBERTERRORISM; Thesaurus Term: COMPUTER crimes; Thesaurus Term: PROCESS control; Thesaurus Term: CONTROL theory (Mathematics); Thesaurus Term: COMPUTER security; Thesaurus Term: DATA protection; Subject Term: PREVENTION; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; Number of Pages: 7p; Document Type: Article L3 - 10.1145/381641.381662 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12026082&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - McDougal, J.N. AU - Jurgens-Whitehead, J.L. T1 - Short-Term Dermal Absorption and Penetration of Chemicals from Aqueous Solutions: Theory and Experiment. JO - Risk Analysis: An International Journal JF - Risk Analysis: An International Journal Y1 - 2001/08// VL - 21 IS - 4 M3 - Article SP - 719 EP - 726 PB - Wiley-Blackwell SN - 02724332 AB - Dermal penetration of organic chemical-contaminated water from showering and bathing scenarios is a concern of regulatory agencies that have been tasked with determining safe exposure levels. During household showering and bathing, nearly the entire surface area of the body is exposed for short periods of time (5 – 15 minutes). The primary means of predicting body burden during brief exposures is to estimate total chemical penetrated from the steady-state penetration rate using a skin permeability coefficient. A variety of approaches has been recommended to estimate “body burden.” The purpose of this investigation was to collect experimental data from short-term exposures to an organic chemical (dibromomethane [DBM]) in aqueous solution so that methods for estimating body burden could be compared. Rat skins were exposed in vitro to saturated aqueous solutions of DBM for 20 minutes and the amount of chemical in the receptor solution and the skin was analyzed. The total DBM mass in the receptor solution and the skin was taken to represent an in vivo body burden. These results were compared with the estimates of penetration from steady-state calculations, square root of time calculations, and a biologically based mathematical model. Results indicated that the amount of chemical in the skin and its fate during short exposures is important. The square root of time approach predicted total amount of chemical absorbed and penetrated better than did the steady-state approach. The biologically based mathematical model accurately predicted total body burden and could be used to distinguish between the amount of chemical in the skin and the amount of chemical that penetrated through the skin, which would be useful for understanding local toxicity. [ABSTRACT FROM AUTHOR] AB - Copyright of Risk Analysis: An International Journal is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERMEABILITY KW - Organic compounds KW - Risk assessment KW - Health KW - Skin KW - aqueous solutions KW - Bathing KW - Dermal penetration KW - dibromomethane KW - mathematical models KW - permeability coefficient KW - risk assessment KW - Showering N1 - Accession Number: 6632518; McDougal, J.N. 1; Jurgens-Whitehead, J.L. 2; Affiliations: 1: Operational Toxicology, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio.; 2: Toxicology Detachment, Naval Medical Research Institute, Wright-Patterson Air Force Base, Ohio.; Issue Info: Aug2001, Vol. 21 Issue 4, p719; Thesaurus Term: PERMEABILITY; Thesaurus Term: Organic compounds; Thesaurus Term: Risk assessment; Thesaurus Term: Health; Subject Term: Skin; Author-Supplied Keyword: aqueous solutions; Author-Supplied Keyword: Bathing; Author-Supplied Keyword: Dermal penetration; Author-Supplied Keyword: dibromomethane; Author-Supplied Keyword: mathematical models; Author-Supplied Keyword: permeability coefficient; Author-Supplied Keyword: risk assessment; Author-Supplied Keyword: Showering; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=6632518&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 107066308 T1 - College coaches corner. Learning from each other: allowing athletes to use strength and conditioning facility while unsupervised. AU - Hedrick A AU - Jones K AU - Rogers R AU - Dahoda J Y1 - 2001/08//2001 Aug N1 - Accession Number: 107066308. Language: English. Entry Date: 20011109. Revision Date: 20150711. Publication Type: Journal Article; questions and answers. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Fitness Centers -- Utilization KW - Supervisors and Supervision KW - Liability, Legal KW - Athletes, College SP - 20 EP - 21 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 23 IS - 4 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - United States Air Force Academy UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107066308&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 107066324 T1 - Rehab tips. Modifying quadriceps-strengthening exercises in anterior cruciate ligament-deficient athletes. AU - Ross M AU - Southard T A2 - Tyson A Y1 - 2001/08//2001 Aug N1 - Accession Number: 107066324. Language: English. Entry Date: 20011109. Revision Date: 20150818. Publication Type: Journal Article; pictorial; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Quadriceps Muscles KW - Muscle Strengthening -- Methods KW - Anterior Cruciate Ligament Injuries KW - Athletic Training -- Methods SP - 58 EP - 60 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 23 IS - 4 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - Assistant Professor, Dept of Biology, US Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107066324&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Al-Hussien, M. AU - Mall, S. AU - Calcaterra, J. R. T1 - Fatigue behavior of Nextel™ 312/Blackglas™ ceramic matrix composite with tensile and zero mean load. JO - Advanced Composite Materials JF - Advanced Composite Materials Y1 - 2001/07// VL - 10 IS - 1 M3 - Article SP - 1 EP - 15 PB - Taylor & Francis Ltd SN - 09243046 AB - This study characterized a woven fabric reinforced ceramic matrix composite, Nextel™ 312/Blackglas™, under monotonic and fatigue loading conditions at room and elevated (760°C) temperatures in order: (1) to investigate monotonic tensile and compressive loading behavior at room and elevated temperatures, (2) to establish the fatigue life diagrams (S - N curves) with tensile and zero mean load under low frequency (0.1 Hz) cycling condition at room and elevated temperatures, and (3) to investigate damage mechanisms and failure modes under monotonic and fatigue loading conditions. Fatigue lives under tension-compression cycling were much longer than those under tension-tension cycling at a given stress range for both room and elevated temperatures. However, fatigue lives under tension-compression cycling were much shorter than those under tension-tension cycling for a given maximum stress level at room temperature, but lives were about equal under these two loading conditions for a given maximum stress level at elevated temperatures. Further, fatigue lives were much shorter at elevated temperature than their counterparts at room temperature for a given stress range or for a given maximum stress level under the both tension-tension and tension-compression cycling conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Advanced Composite Materials is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIBER-reinforced ceramics KW - MATERIALS -- Fatigue KW - 2D WOVEN COMPOSITE KW - Ceramic matrix composites KW - Fatigue loading KW - MONOTONIC LOADING KW - ROOM AND ELEVATED TEMPERATURES KW - TENSION-COMPRESSION CYCLING N1 - Accession Number: 5337676; Al-Hussien, M. 1; Mall, S. 2; Calcaterra, J. R. 1; Affiliations: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology, USA; 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, AFIT/ENY, 2950 P.St., Bldg. 640, Wright-Patterson Air Force Base, OH 45433, USA; Issue Info: 2001, Vol. 10 Issue 1, p1; Subject Term: FIBER-reinforced ceramics; Subject Term: MATERIALS -- Fatigue; Author-Supplied Keyword: 2D WOVEN COMPOSITE; Author-Supplied Keyword: Ceramic matrix composites; Author-Supplied Keyword: Fatigue loading; Author-Supplied Keyword: MONOTONIC LOADING; Author-Supplied Keyword: ROOM AND ELEVATED TEMPERATURES; Author-Supplied Keyword: TENSION-COMPRESSION CYCLING; Number of Pages: 15p; Document Type: Article L3 - 10.1163/15685510152546321 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=5337676&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 106937775 T1 - Serum dioxin and hepatic abnormalities in veterans of Operation Ranch Hand. AU - Michalek JE AU - Ketchum NS AU - Longnecker MP Y1 - 2001/07//2001 Jul N1 - Accession Number: 106937775. Language: English. Entry Date: 20020705. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; Public Health; USA. NLM UID: 9100013. KW - Liver Diseases -- Chemically Induced KW - Herbicides -- Adverse Effects KW - Chemical Warfare Agents -- Adverse Effects KW - Vietnam Veterans KW - Epidemiological Research KW - Liver Function Tests KW - Occupational Exposure KW - Prospective Studies KW - Comparative Studies KW - Physical Examination KW - Record Review KW - Interviews KW - Alcohol Drinking KW - Odds Ratio KW - Confidence Intervals KW - Regression KW - Male KW - Prevalence KW - Human SP - 304 EP - 311 JO - Annals of Epidemiology JF - Annals of Epidemiology JA - ANN EPIDEMIOL VL - 11 IS - 5 CY - New York, New York PB - Elsevier Science AB - PURPOSE: We studied hepatic abnormalities and indices of hepatic function in relation to exposure to 2,3,7,8-tetrachlorodibenzo-p-dioxin (dioxin) in veterans of Operation Ranch Hand, the Air Force unit responsible for the aerial spraying of herbicides in Vietnam from 1962 to 1971. METHODS: The prevalence of ever having liver disease through March 1993, and level of alanine aminotransferase, aspartate aminotransferase, gamma-glutamyltransferase (GGT), lactic dehydrogenase (LDH), alkaline phosphatase, and total bilirubin were examined according to serum dioxin levels. RESULTS: We found an increased risk of 'other liver disorders' among veterans with the highest dioxin levels [adjusted odds ratio (OR) = 1.6, 95% confidence interval (CI) 1.2 to 2.1], due primarily to increased transaminases or LDH (adjusted OR = 2.7, 95% CI 1.4 to 5.1) and to other nonspecific liver abnormalities (adjusted OR = 1.4, 95% CI 1.0 to 2.0). CONCLUSIONS: Whether the associations observed were causal is unclear from these data. SN - 1047-2797 AD - Air Force Research Laboratory, Brooks AFB, TX U2 - PMID: 11399444. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106937775&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Guo, Xuguang AU - Longnecker, Matthew P. AU - Michalek, Joel E. T1 - RELATION OF SERUM TETRACHLORODIBENZO-p-DIOXIN CONCENTRATION TO DIET AMONG VETERANS IN THE AIR FORCE HEALTH STUDY WITH BACKGROUND-LEVEL EXPOSURE. JO - Journal of Toxicology & Environmental Health: Part A JF - Journal of Toxicology & Environmental Health: Part A Y1 - 2001/06/08/ VL - 63 IS - 3 M3 - Article SP - 159 EP - 172 SN - 15287394 AB - To examine the contribution of various foods to exposure to 2,3,7,8-tetrachloro-p-dibenzodioxin (TCDD) in a background-exposed U.S. population, serum TCDD levels were examined in relation to diet as assessed by a standard diet assessment instrument among men with no known unusual exposure to TCDD. Our subjects were male veterans aged 42-76 yr who were in the unexposed comparison group in the Air Force Health Study, a study of the health effects of exposure to Agent Orange and herbicides in Vietnam. Food consumption was assessed by a 126-item food frequency questionnaire. Two hundred and ninety veterans who had both TCDD levels and diet assessed in 1992 were included. In general, associations between serum TCDD and consumption of foods in specific groups or nutrients, that is, meats and fats, were not evident. Among younger men, fish and chicken intake were associated with higher serum TCDD levels. The results suggest that no single food group accounts for a large proportion of variation in TCDD exposure in older U.S. men. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Toxicology & Environmental Health: Part A is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Tetrachlorodibenzodioxin KW - Food -- Toxicology KW - Health KW - Veterans -- United States KW - United States N1 - Accession Number: 4783473; Guo, Xuguang 1; Longnecker, Matthew P. 2; Michalek, Joel E. 3; Affiliations: 1: Statistics and Public Health Research Division, Analytical Sciences, Inc., Durham, North Carolina, USA; 2: Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, USA; 3: Air Force Research Laboratory, Brooks Air Force Base, Texas, USA; Issue Info: 2001, Vol. 63 Issue 3, p159; Thesaurus Term: Tetrachlorodibenzodioxin; Thesaurus Term: Food -- Toxicology; Thesaurus Term: Health; Subject Term: Veterans -- United States; Subject: United States; Number of Pages: 14p; Document Type: Article L3 - 10.1080/15287390151101501 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=4783473&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Olson, Wesley A. AU - Sarter, Nadine B. AU - Olson, W A AU - Sarter, N B T1 - Management by consent in human-machine systems: when and why it breaks down. JO - Human Factors JF - Human Factors Y1 - 2001///Summer2001 VL - 43 IS - 2 M3 - journal article SP - 255 EP - 266 SN - 00187208 AB - This study examined the effects of conflict type, time pressure, and display design on operators' ability to make informed decisions about proposed machine goals and actions in a management-by-consent context. A group of 30 B757 pilots were asked to fly eight descent scenarios while responding to a series of air traffic control clearances. Each scenario presented pilots with a different conflict that arose from either incompatible goals contained in the clearance or inappropriate implementation of the clearance by automated flight deck systems. Pilots were often unable to detect these conflicts, especially under time pressure, and thus failed to disallow or intervene with proposed machine actions. Detection performance was particularly poor for conflicts related to clearance implementation. These conflicts were most likely to be missed when automated systems did more than the pilot expected of them. Performance and verbal protocol data indicate that the observed difficulties can be explained by a combination of poor system feedback and pilots' difficulties with generating expectations of future system behavior. Our results are discussed in terms of their implications for the choice and implementation of automation management strategies in general and, more specifically, with respect to risks involved in envisioned forms of digital air-ground communication in the future aviation system. Actual or potential applications of this research include the design of future data link systems and procedures, as well as the design of future automated systems in any domain that rely on operator consent as a mechanism for human-machine coordination. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Decision making KW - Supervisory control systems KW - Air traffic controllers N1 - Accession Number: 5336801; Olson, Wesley A.; Sarter, Nadine B.; Olson, W A 1; Sarter, N B; Affiliations: 1: United States Air Force, Andrews Air Force Base, Maryland, USA; Issue Info: Summer2001, Vol. 43 Issue 2, p255; Subject Term: Decision making; Subject Term: Supervisory control systems; Subject Term: Air traffic controllers; NAICS/Industry Codes: 488111 Air Traffic Control; Number of Pages: 12p; Illustrations: 1 Black and White Photograph, 2 Charts, 1 Graph; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=5336801&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR T1 - Readministration of the MMPI-2 Following Defensive Invalidation in a Military Job Applicant Sample. AU - Cigrang, Jeff A. AU - Staal, Mark A. JO - Journal of Personality Assessment JF - Journal of Personality Assessment Y1 - 2001/06// VL - 76 IS - 3 SP - 472 EP - 481 SN - 00223891 N1 - Accession Number: 4792597; Author: Cigrang, Jeff A.: 1 Author: Staal, Mark A.: 2 ; Author Affiliation: 1 74th Medical Group, Wright-Patterson Air Force Base, Ohio: 2 Department of Psychology, United States Air Force Academy; No. of Pages: 10; Language: English; Publication Type: Article; Update Code: 20010711 N2 - Job applicants whose response style on the Minnesota Multiphasic Personality Inventory-2 (MMPI-2; Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer) is excessively defensive create a dilemma for psychologists working in personnel selection settings. Clinical guidelines recommend the profile be considered uninterpretable, but the absence of usable testing data could lead to the elimination of otherwise qualified candidates. Readministering the MMPI-2 with altered instructions to reduce defensive responding has been suggested as an alternative. This option has lacked empirical support until recently. One study (Butcher, Morfitt, Rouse, & Holden, 1997) evaluated the effects of altered instructions on retest validity in a civilian job applicant sample, with the majority of participants obtaining valid and normal profiles on retest. The purpose of this study was to determine if these results would be replicated in a military job applicant sample. Participants were 97 military personnel who completed the MMPI-2 as part of application for selection to instructor duty. Forty-seven participants had obtained invalid profiles and retook the MMPI-2 after receiving instructions intended to reduce defensiveness. The results showed that 83% of retested participants obtained valid profiles on the second MMPI-2. The second test results were very similar in profile to those obtained from a comparison group of 50 participants whose initial MMPI-2 results were valid. The findings are discussed in terms of study limitations and future research directions. ABSTRACT FROM AUTHOR KW - MINNESOTA Multiphasic Personality Inventory KW - JOB applications KW - TEXAS KW - UNITED States UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=4792597&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 107042880 T1 - College coaches corner. Learning from each other: hiring assistant coaches. AU - Hedrick A Y1 - 2001/06//2001 Jun N1 - Accession Number: 107042880. Language: English. Entry Date: 20010810. Revision Date: 20150711. Publication Type: Journal Article; questions and answers. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Personnel Selection KW - Athletic Trainers KW - Professional Competence KW - Personal Values SP - 63 EP - 64 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 23 IS - 3 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - US Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107042880&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2009-08547-005 AN - 2009-08547-005 AU - Anna, Alexandra AU - Chesley, Julie AU - Davis, Kevin T1 - Executive coaching by proxy in a large organization: A leadership development tool. JF - Journal of Leadership Studies JO - Journal of Leadership Studies Y1 - 2001///Sum 2001 VL - 8 IS - 1 SP - 61 EP - 68 CY - US PB - Baker College Publishing Co. SN - 1071-7919 N1 - Accession Number: 2009-08547-005. Other Journal Title: Journal of Leadership & Organizational Studies. Partial author list: First Author & Affiliation: Anna, Alexandra; Economic and Business Department, Colorado College, Colorado Springs, CO, US. Other Publishers: Sage Publications. Release Date: 20090810. Correction Date: 20090831. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Ability; Leadership; Organizations; Top Level Managers; Executive Coaching. Classification: Management & Management Training (3640). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 8. Issue Publication Date: Sum 2001. AB - The area of executive coaching is gaining rapid interest in the field of organizational consultation. It has expanded beyond the role of helping an executive get back on track, to developing managerial skills and leadership development. Some of the potential benefits of executive coaching have not yet been fully utilized by many organizations in part due to cost. Resource constraints have made it difficult to implement executive coaching across a large group of managers in large organizations. This paper describes how one very large, geographically dispersed organization implemented a comprehensive coaching by proxy program through the use of in-house resources. The specific application content coaching was aimed at helping managers better utilize and benefit from organizational climate surveys. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - executive coaching KW - proxy KW - large organization KW - managerial skills KW - leadership development KW - 2001 KW - Ability KW - Leadership KW - Organizations KW - Top Level Managers KW - Executive Coaching KW - 2001 DO - 10.1177/107179190100800105 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-08547-005&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Berndt, Ernst R. AU - Rappaport, Neal J. AD - MIT AD - US Air Force Academy T1 - Price and Quality of Desktop and Mobile Personal Computers: A Quarter-Century Historical Overview JO - American Economic Review JF - American Economic Review Y1 - 2001/05// VL - 91 IS - 2 SP - 268 EP - 273 SN - 00028282 N1 - Accession Number: 0574677; Keywords: Computers; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 200108 KW - Microelectronics; Computers; Communications Equipment L63 KW - Economic History: Manufacturing and Construction: U.S.; Canada: 1913- N62 L3 - http://www.aeaweb.org/aer/ UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0574677&site=ehost-live&scope=site UR - http://dx.doi.org/10.1257/aer.91.2.268 UR - http://www.aeaweb.org/aer/ DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Baum, Carl E. AU - Stone, Alexander P. T1 - Unipolarized Generalized Inhomogeneous TEM Plane Waves in Differential Geometric Lens Synthesis. JO - Electromagnetics JF - Electromagnetics Y1 - 2001/05// VL - 21 IS - 4 M3 - Article SP - 275 EP - 294 PB - Taylor & Francis Ltd SN - 02726343 AB - Previous results have shown that one can have a generalized Transverse Electromagnetic (TEM) plane wave propagating in the u[sub 3] direction in u[sub 1], u[sub 2], u[sub 3] orthogonal curvilinary coordinates. The formal fields are functions of u[sub 1] and u[sub 2] only and have components in both these directions. The medium is inhomogeneous but isotropic, with formal propagation speed (with respect to the u[sub 3] coordinate) a function of only u[sub 3]. In this case the u[sub 3] surfaces can only be planes or spheres. The case of constant φ surfaces for u[sub 3] gave a class of TEM waves propagating in the φ direction in the usual (Ψ, φ, z) cylindrical coordinate system, thereby giving a bending lens to change the direction of propagation of a TEM wave guided by appropriate conductors. In the present paper the formal fields are assumed to have only one component (electric in the u[sub 1] direction, magnetic in the u[sub 2] direction). This removes the aforementioned restriction on the u[sub 3] coordinate surfaces. The formal constitutive parameters μ[sup 1] and ε[sup 1] are inhomogeneous but isotropic, and the real μ is constrained to be μ[sub 0] as before. Specializing the dielectric lens to a body of revolution with the magnetic field in the φ (i.e., u[sub 2]) direction, several examples of such lenses are developed. Two of these examples correspond to well-known circular coaxial and circular conical transmission lines with uniform media. Another two of these examples are nontraditional, involving line sources or foci. [ABSTRACT FROM AUTHOR] AB - Copyright of Electromagnetics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC lenses KW - GEOMETRICAL optics KW - POLARIZATION of electromagnetic waves KW - MAXWELL equations KW - DIFFERENTIAL geometry KW - Differential geometry KW - TEM PLANE WAVE N1 - Accession Number: 4437900; Baum, Carl E. 1; Stone, Alexander P. 2; Affiliations: 1: Air Force Research Laboratory Directed Energy Directorate; 2: Department of Mathematics & Statistics University of New Mexico Albuquerque, New Mexico, USA; Issue Info: May2001, Vol. 21 Issue 4, p275; Subject Term: ELECTROMAGNETIC lenses; Subject Term: GEOMETRICAL optics; Subject Term: POLARIZATION of electromagnetic waves; Subject Term: MAXWELL equations; Subject Term: DIFFERENTIAL geometry; Author-Supplied Keyword: Differential geometry; Author-Supplied Keyword: TEM PLANE WAVE; Number of Pages: 20p; Illustrations: 1 Diagram; Document Type: Article L3 - 10.1080/027263401750158135 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=4437900&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Alexander, William K. AU - Briggs, G. Bruce AU - Still, Kenneth R. AU - Jederberg, Warren W. AU - MacMahon, K. AU - Baker, W. H. AU - MacKerer, C. T1 - Toxicity of 2,6-Di-tert-butyl-4-Nitrophenol (DBNP). JO - Applied Occupational & Environmental Hygiene JF - Applied Occupational & Environmental Hygiene Y1 - 2001/04// VL - 16 IS - 4 M3 - Article SP - 487 EP - 495 PB - Taylor & Francis Ltd SN - 1047322X AB - U.S. Navy submarines reported a yellowing of metal surfaces on their internal surfaces. The yellowing was initially identified on the painted steel bulkheads but further examination indicated that it was not limited to steel surfaces and included bedding, thread tape, Formica, plastisol covered hand-wheels, and aluminum lockers. Crew members also reported to the medical department that their skin turned yellow when they came in contact with these contaminated surfaces and requested information on the effects of exposure. Studies conducted by General Dynamics' Electric Boat Division (EBD) determined that the agent was 2,6-Di-tertbutyl-4-Nitrophenol (DBNP). 2,6-Di-butylphenol (DBP) is an antioxidant additive used in lubricating oils and hydraulic fluids. In the enclosed atmosphere of a submarine, the oil mist could be spread throughout the boat by venting the lube oil to the atmosphere. Submarines use electrostatic precipitators (ESP) to clean the air of particulate materials. During passage through the ESP, oil mist containing DBP is nitrated to DBNP,which is then moved throughout the boat in the ventilation system. Analysis of the EBD data indicated 24-hour exposure concentrations to be in the range of < 3.0 to 122 ppb in the laboratory and submarine settings. Submarine crews may be exposed to these concentrations for as many as 24 hours/day for 90 days during underway periods. Toxicity studies regarding the oral and dermal uptake of DBNP were conducted. From the literature the lethal dose to 50 percent of the population (LD[sub 50]) of DBNP (rat) was reported by Vesselinovitch et al. in 1961 to be 500 mg/kg. Our studies indicated that the LD[sub 50] is in the range of 80 mg/kg in the rat. Our work also includes dermal absorption studies, which indicated that DBNP is not well absorbed through intact skin. Within this study, no no-observable adverse effect level (NOAEL) or lowest observable adverse effect level (LOAEL) was identified. Calculation of a reference dose was completed using standard methods based on the LD[sub 50] as a numerator with several uncertainty and modifying factors. EBD's determination of airborne concentrations aboard submarines fall in the range of these anticipated allowable concentrations and could indicate significant chronic exposures. No adverse effects from DBNP exposures have been reported to date. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Occupational & Environmental Hygiene is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Toxicity testing KW - Nitrophenols KW - Submarines (Ships) KW - United States KW - DBNP KW - Submarine KW - TOXICITY N1 - Accession Number: 4343224; Alexander, William K. 1; Briggs, G. Bruce 2; Still, Kenneth R. 1; Jederberg, Warren W. 3; MacMahon, K. 4; Baker, W. H. 4; MacKerer, C. 5; Affiliations: 1: Naval Health Research Center Toxicology Detachment (NHRC/TD), Wright-Patterson Air Force Base, Ohio; 2: Geo-Centers, Inc., Wright-Patterson Air Force Base, Ohio; 3: Commander Submarine Force, Pacific, Pearl Harbor, Hawaii; 4: Air Force Research Laboratory, Human Effectiveness Directorate (AFRL/HEST), Wright-Patterson Air Force Base, Ohio; 5: Mobil Business Resources Corp., Paulsboro, New Jersey; Issue Info: Apr2001, Vol. 16 Issue 4, p487; Thesaurus Term: Toxicity testing; Subject Term: Nitrophenols; Subject Term: Submarines (Ships); Subject: United States; Author-Supplied Keyword: DBNP; Author-Supplied Keyword: Submarine; Author-Supplied Keyword: TOXICITY; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 336611 Ship Building and Repairing; Number of Pages: 9p; Document Type: Article L3 - 10.1080/104732201300064449 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=4343224&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 107036753 T1 - College coaches corner. Learning from each other: adjusting nutritional supplements based on new NCAA guidelines. AU - Hedrick A Y1 - 2001/04//2001 Apr N1 - Accession Number: 107036753. Language: English. Entry Date: 20010713. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Dietary Supplementation KW - Athletes KW - Sports Organizations KW - Creatinine SP - 53 EP - 54 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 23 IS - 2 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107036753&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Colette, Damon T1 - Economic Strategy and National Security: A Next Generation Approach. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) J1 - Armed Forces & Society (0095327X) PY - 2001///Spring2001 Y1 - 2001///Spring2001 VL - 27 IS - 3 M3 - Book Review SP - 494 EP - 497 PB - Sage Publications Inc. SN - 0095327X AB - The article reviews the book "Economic Strategy and National Security: A Next Generation Approach," by Patrick J. deSouza. KW - ECONOMIC Strategy & National Security: A Next Generation Approach (Book) KW - DESOUZA, Patrick J. KW - NATIONAL security KW - NONFICTION N1 - Accession Number: 5169397; Source Information: Spring2001, Vol. 27 Issue 3, p494; Subject Term: ECONOMIC Strategy & National Security: A Next Generation Approach (Book); Subject Term: DESOUZA, Patrick J.; Subject Term: NATIONAL security; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 4p; ; Document Type: Book Review; ; Full Text Word Count: 1440; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=5169397&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Bolia, Robert S. AU - D'Angelo, William R. AU - Mishler, Pamela J. AU - Morris, Linda J. AU - Bolia, R S AU - D'Angelo, W R AU - Mishler, P J AU - Morris, L J T1 - Effects of hearing protectors on auditory localization in azimuth and elevation. JO - Human Factors JF - Human Factors Y1 - 2001///Spring2001 VL - 43 IS - 1 M3 - journal article SP - 122 EP - 128 SN - 00187208 AB - An experiment was conducted to determine the effects of two types of hearing protectors on auditory localization performance. Six listeners localized a 750-ms broadband noise from loudspeakers ranging in azimuth from -180 degrees to +180 degrees and in elevation from -75 degrees to +90 degrees. Independent variables included the type of hearing protector and the elevation of the source. Dependent measures included azimuth error, elevation error, and the percentage of trials resulting in a front-back confusion. Performance on each of the dependent measures was found to be mediated by one or more of the independent variables. Actual or potential applications include the generation of improved design guidelines for hearing protectors and workplace alarms. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Comparative studies KW - Research KW - Deafness -- Prevention -- Equipment & supplies KW - Directional hearing KW - Hearing KW - Attention KW - Research -- Methodology KW - Medical cooperation KW - Psychoacoustics KW - Evaluation -- Research KW - Acoustic localization KW - Hearing protection N1 - Accession Number: 4919421; Bolia, Robert S.; D'Angelo, William R.; Mishler, Pamela J.; Morris, Linda J.; Bolia, R S 1; D'Angelo, W R; Mishler, P J; Morris, L J; Affiliations: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7022, USA; Issue Info: Spring2001, Vol. 43 Issue 1, p122; Thesaurus Term: Comparative studies; Thesaurus Term: Research; Subject Term: Deafness -- Prevention -- Equipment & supplies; Subject Term: Directional hearing; Subject Term: Hearing; Subject Term: Attention; Subject Term: Research -- Methodology; Subject Term: Medical cooperation; Subject Term: Psychoacoustics; Subject Term: Evaluation -- Research; Subject Term: Acoustic localization; Subject Term: Hearing protection; Number of Pages: 7p; Illustrations: 1 Black and White Photograph, 4 Graphs; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=4919421&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Draper, Mark H. AU - Viirre, Erik S. AU - Furness, Thomas A. AU - Gawron, Valerie J. AU - Draper, M H AU - Viire, E S AU - Furness, T A AU - Gawron, V J T1 - Effects of image scale and system time delay on simulator sickness within head-coupled virtual environments. JO - Human Factors JF - Human Factors Y1 - 2001///Spring2001 VL - 43 IS - 1 M3 - journal article SP - 129 EP - 146 SN - 00187208 AB - Novel patterns of visual-vestibular intersensory stimulation often result in symptoms of simulator sickness, raising health and safety concerns regarding virtual environment exposure. Two experiments investigated the effect of conflicting visual-vestibular cues on subjective reports of simulator sickness during and after a 50-min exposure to a head-coupled virtual interface. Virtual image scale factors (0.5. 1.0, 2.0 magnification, generated by varying geometric field of view angle) were investigated in Experiment 1, and additional system time delays (125, 250 ms) were investigated in Experiment 2. Simulator sickness metrics included spoken self-reports during exposure and simulator sickness questionnaires (pre-exposure, immediate postexposure, and 20 min postexposure). Head yaw angular position data were also recorded. Reports of simulator sickness symptoms were significantly greater in the minification (0.5) and magnification (2.0) image scale factor conditions than in the neutral condition (1.0). Simulator sickness did not vary with changes in time delay, however. Furthermore, a comparison across experiments suggests no appreciable increase in simulator sickness with increasing time delays above the nominal value (48 ms). Head angular position data exhibited certain systematic variations across conditions. Actual or potential applications of this research include virtual environment training, simulation, and entertainment systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Motion sickness KW - Imaging systems N1 - Accession Number: 4919423; Draper, Mark H.; Viirre, Erik S.; Furness, Thomas A.; Gawron, Valerie J.; Draper, M H 1; Viire, E S; Furness, T A; Gawron, V J; Affiliations: 1: US Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA; Issue Info: Spring2001, Vol. 43 Issue 1, p129; Subject Term: Motion sickness; Subject Term: Imaging systems; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; Number of Pages: 18p; Illustrations: 2 Diagrams, 3 Charts, 11 Graphs; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=4919423&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 107046492 T1 - The assessment and prevention of suicide for the 21st century: the Air Force's community awareness training model. AU - Staal MA Y1 - 2001/03//2001 Mar N1 - Accession Number: 107046492. Language: English. Entry Date: 20010824. Revision Date: 20150711. Publication Type: Journal Article; tables/charts. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 2984771R. KW - Suicide -- Prevention and Control KW - Aerospace Medicine KW - Health Education KW - Military Personnel -- Education KW - Military Personnel -- Psychosocial Factors KW - Forecasting KW - Practice Guidelines KW - Risk Factors KW - Program Evaluation KW - Risk Assessment KW - United States SP - 195 EP - 198 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 166 IS - 3 CY - Bethesda, Maryland PB - AMSUS AB - Professional practice standards and ethical obligations in the realm of suicide and risk management have been discussed for the last several decades. In the civilian sector, this discussion has taken the form of malpractice case law, the development of numerous assessment tools and practice guidelines for clinicians, and some attempts to describe possible models of prevention. In the Air Force, concern regarding suicide and risk management has evolved into a formalized program of community awareness and education that has been testing the boundaries of suicidal risk detection, assessment, and support facilitation. This article briefly describes this program, its success, and its implications for both active duty and civilian populations. Guidelines for mental health practice standards in risk management and suicide assessment are also discussed. SN - 0026-4075 AD - Department of Behavioral Sciences, United States Air Force Academy, CO 80840 U2 - PMID: 11263015. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107046492&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2001-00398-001 AN - 2001-00398-001 AU - Staal, Mark A. T1 - The assessment and prevention of suicide for the 21st century: The Air Force's community awareness training model. JF - Military Medicine JO - Military Medicine JA - Mil Med Y1 - 2001/03// VL - 166 IS - 3 SP - 195 EP - 198 CY - US PB - Assn of Military Surgeons of the US SN - 0026-4075 SN - 1930-613X N1 - Accession Number: 2001-00398-001. PMID: 11263015 Partial author list: First Author & Affiliation: Staal, Mark A.; US Air Force Academy, Dept of Behavioral Sciences & Leadership, CO, US. Release Date: 20010411. Correction Date: 20170302. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Educational Programs; Mental Health Programs; Military Psychology; Risk Factors; Suicide Prevention. Minor Descriptor: Air Force Personnel; At Risk Populations. Classification: Behavior Disorders & Antisocial Behavior (3230); Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). References Available: Y. Page Count: 4. Issue Publication Date: Mar, 2001. AB - Professional practice standards and ethical obligations in the realm of suicide and risk management have been discussed for the last several decades. In the civilian sector, this discussion has taken the form of malpractice case law, the development of numerous assessment tools and practice guidelines for clinicians, and some attempts to describe possible models of prevention. In the Air Force, concern regarding suicide and risk management has evolved into a formalized program of community awareness and education that has been testing the boundaries of suicidal risk detection, assessment, and support facilitation. This article briefly describes this program, its success, and its implications for both active duty and civilian populations. Guidelines for mental health practice standards in risk management and suicide assessment are also discussed. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - program of community awareness & education in testing boundaries of suicidal risk detection & assessment & support facilitation KW - US Air Force personnel KW - 2001 KW - Educational Programs KW - Mental Health Programs KW - Military Psychology KW - Risk Factors KW - Suicide Prevention KW - Air Force Personnel KW - At Risk Populations KW - 2001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2001-00398-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Muschinski, Andreas AU - Frehich, Ror AU - Jensen, Mike AU - Hugo, Ron AU - Hoff, Axel AU - Eaton, Frank AU - Balsley, Ben T1 - Fine-Scale Measurements Of Turbulence In The Lower Troposphere: An Intercomparison Between A Kite- And Balloon-Borne, And A Helicopter-Borne Measurement System. JO - Boundary-Layer Meteorology JF - Boundary-Layer Meteorology Y1 - 2001/02// VL - 98 IS - 2 M3 - Article SP - 219 EP - 250 PB - Springer Science & Business Media B.V. SN - 00068314 AB - Two state-of-the-art, high-resolution, in situ turbulence measurement systems, which can be deployed at altitudes well above the atmospheric surface layer, are compared: the Tethered Lifting System (TLS) of the Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado, Boulder, Colorado, and the helicopter-borne turbulence measurement system HELIPOD of the Technical University Braunschweig, Germany, and the University of Hanover, Germany. While the CIRES TLS is a fixed-point platform, HELIPOD is a moving platform. On the basis of data taken with the two systems in separate field campaigns, the system capabilities are quantified and discussed. Criteria for instrumental requirements are presented. It is shown that both the CIRES TLS and HELIPOD are well suited for measuring fine-scale turbulence that is characterized by very small temperature structure parameters 106 K2 m-2/3 and smaller) and very small energy dissipation rates (10-7 m2 s-3 and smaller). The authors are not aware of any other turbulence measurement systems that have similar capabilities and can be deployed at altitudes of up to several kilometres. The HELIPOD is ideal for high-resolution horizontal measurements while the TLS is ideal for high-resolution vertical measurements using multiple sensors attached to a suspended line. [ABSTRACT FROM AUTHOR] AB - Copyright of Boundary-Layer Meteorology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Atmospheric turbulence KW - Meteorology KW - Meteorological instruments KW - Environmental sciences KW - Turbulence KW - Energy dissipation KW - Airborne turbulence measurements KW - Energy dissipation rate KW - Fine-wire anemometry KW - Fine-wire thermometry KW - HELIPOD KW - Structure parameters KW - Tethered Lifting System N1 - Accession Number: 15606461; Muschinski, Andreas 1; Frehich, Ror 2; Jensen, Mike 2; Hugo, Ron 3; Hoff, Axel 4; Eaton, Frank 3; Balsley, Ben 2; Affiliations: 1: Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, and NOAA Environmental Technology Laboratory, 325 Broadway, Boulder, Colorado 80305-3328, U.S.A.; 2: Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, Colorado 80309, U.S.A.; 3: U. S. Air Force Research Laboratory/DEBA, 3550 Aberdeen St., Kirtland Air Force Base, New Mexico 87117-5776, U.S.A.; 4: Aerodata Flugmeßtechnik GmbH, Hermann-Blenk-Straße 36, D-38108 Braunschweig, Germany; Issue Info: Feb2001, Vol. 98 Issue 2, p219; Thesaurus Term: Atmospheric turbulence; Thesaurus Term: Meteorology; Thesaurus Term: Meteorological instruments; Thesaurus Term: Environmental sciences; Subject Term: Turbulence; Subject Term: Energy dissipation; Author-Supplied Keyword: Airborne turbulence measurements; Author-Supplied Keyword: Energy dissipation rate; Author-Supplied Keyword: Fine-wire anemometry; Author-Supplied Keyword: Fine-wire thermometry; Author-Supplied Keyword: HELIPOD; Author-Supplied Keyword: Structure parameters; Author-Supplied Keyword: Tethered Lifting System; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 32p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=15606461&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 107015725 T1 - Using unorthodox training methods to achieve superior results. AU - Hedrick A Y1 - 2001/02//2001 Feb N1 - Accession Number: 107015725. Language: English. Entry Date: 20010420. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletic Training -- Methods KW - Muscle Strengthening -- Methods KW - Muscle Strengthening -- Equipment and Supplies KW - Torso KW - Stretching KW - Posture KW - Exercise Intensity SP - 62 EP - 65 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 23 IS - 1 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107015725&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Morgan, II, Chester H. T1 - All the Laws But One--Civil Liberties in Wartime. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) J1 - Armed Forces & Society (0095327X) PY - 2001///Winter2001 Y1 - 2001///Winter2001 VL - 27 IS - 2 M3 - Book Review SP - 303 EP - 306 PB - Sage Publications Inc. SN - 0095327X AB - The article reviews the book "All the Laws But One--Civil Liberties in Wartime," by William Rehnquist. KW - ALL the Laws But One: Civil Liberties in Wartime (Book) KW - REHNQUIST, William H., 1924-2005 KW - CIVIL rights KW - NONFICTION N1 - Accession Number: 4345688; Source Information: Winter2001, Vol. 27 Issue 2, p303; Subject Term: ALL the Laws But One: Civil Liberties in Wartime (Book); Subject Term: REHNQUIST, William H., 1924-2005; Subject Term: CIVIL rights; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 4p; ; Document Type: Book Review; ; Full Text Word Count: 1349; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=4345688&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Haymond, Jeffrey AD - US Air Force Academy T1 - Blowing Smoke: A Case of Rent Extraction JO - Journal of Public Finance and Public Choice/Economia delle Scelte Pubbliche JF - Journal of Public Finance and Public Choice/Economia delle Scelte Pubbliche Y1 - 2001/// VL - 19 IS - 1 SP - 23 EP - 38 SN - 11207019 N1 - Accession Number: 0633227; Keywords: Congress; Political; Politician; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 200302 N2 - McChesney's theory of rent extraction describes a political model of extortion. Politicians can benefit not only by creating rents, but also by extracting privately created rents. This theory is tested empirically using event study methodology for the United States national tobacco bill, debated in Congress during 1997 and 1998. The tobacco industry was threatened with punitive legislation, lost wealth (in terms of market capitalization), and ultimately no bill was passed. In McChesney's words, money for nothing. The empirical evidence strongly supports the view that private rents were extracted with this proposed legislation. KW - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior D72 L3 - http://www.jpfpc.org/default.asp?sec=137 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0633227&site=ehost-live&scope=site UR - http://www.jpfpc.org/default.asp?sec=137 DP - EBSCOhost DB - ecn ER - TY - CHAP ID - 2001-01721-015 AN - 2001-01721-015 AU - Dominguez, Cynthia O. ED - Salas, Eduardo ED - Klein, Gary ED - Salas, Eduardo, (Ed) ED - Klein, Gary, (Ed) T1 - Expertise in laparoscopic surgery: Anticipation and affordances. T2 - Linking expertise and naturalistic decision making. Y1 - 2001/// SP - 287 EP - 301 CY - Mahwah, NJ, US PB - Lawrence Erlbaum Associates Publishers SN - 0-8058-3538-5 SN - 0-8058-3539-3 N1 - Accession Number: 2001-01721-015. Partial author list: First Author & Affiliation: Dominguez, Cynthia O.; Air Force Material Command, US. Release Date: 20010815. Correction Date: 20151207. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-8058-3538-5, Hardcover; 0-8058-3539-3, Paperback. Language: English. Conference Information: Naturalistic Decision Making, 4th, May, 1998, Airlie Center, Warrenton, VA, US. Major Descriptor: Decision Making; Experience Level; Surgery. Classification: Cognitive Processes (2340). Intended Audience: Psychology: Professional & Research (PS). References Available: Y. Page Count: 15. AB - In this chapter, the author presents results from a field study on decision-making expertise in the domain of laparoscopic surgery, examining the conversion decision: whether a surgeon will convert from a minimally invasive procedure to a more traditional, open-incision procedure. In an open procedure, surgeons use large incisions and can directly look into and manipulate the field of operation. Converting essentially widens the field of view and permits direct tactile feedback; it expands the field of safe travel available to a surgeon. Typically, a gallbladder removal procedure begins laparoscopically, and the decision to convert is made when a complication or unintentional injury is predicted, suspected, or confirmed. The remainder of this introduction is devoted to explaining the goals and context of this research. The author then outlines background research and theory, detailing the methods and approaches used in this field study, and presents findings in two areas. The first area dealing with prediction and anticipation, and the second discusses perceptual expertise, with an emphasis on affordances. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - decision making expertise KW - laparoscopic surgery KW - conversion decision KW - anticipation KW - affordances KW - 2001 KW - Decision Making KW - Experience Level KW - Surgery KW - 2001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2001-01721-015&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2002-15110-004 AN - 2002-15110-004 AU - Ruck, Hendrick W. AU - Barthelemy, Robert R. AU - Barlow, Cassie B. T1 - The merger of government organizations: A case study. JF - The Psychologist-Manager Journal JO - The Psychologist-Manager Journal Y1 - 2001/// VL - 5 IS - 2 SP - 171 EP - 179 CY - US PB - Lawrence Erlbaum SN - 1088-7156 SN - 1550-3461 AD - Ruck, Hendrick W., Air Force Research Lab, AFRL/DC (SAF/AQR), 1060 Air Force, Pentagon, Washington, DC, US, 20330-1060 N1 - Accession Number: 2002-15110-004. Partial author list: First Author & Affiliation: Ruck, Hendrick W.; Air Force Research Laboratory, US. Other Publishers: Educational Publishing Foundation; Taylor & Francis. Release Date: 20020731. Correction Date: 20140609. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Business; Government; Mergers and Acquisitions; Organizational Behavior. Classification: Organizational Behavior (3660). Population: Human (10). References Available: Y. Page Count: 9. Issue Publication Date: 2001. AB - Mergers and acquisitions have been a major force in business and industry but have seldom been studied in government contexts. Many studies suggest that failures of mergers are often related to inadequate attention to organizational cultures and human behavior. The current case study focuses on a little-reported merger phenomenon-the government reorganization. It also describes the careful, considered, psychological tenets and organizational structures that were key to the successful change. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - government KW - reorganization KW - merger KW - organizational structures KW - psychological KW - human behavior KW - 2001 KW - Business KW - Government KW - Mergers and Acquisitions KW - Organizational Behavior KW - 2001 DO - 10.1037/h0095912 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2002-15110-004&site=ehost-live&scope=site UR - hendrick.ruck2@pentagon.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Koberg, Christine AU - Chesley, Julie A. AU - Heppard, Kurt A. T1 - Adaptive Latitude: Environment, Organization, and Individual Influences. JO - Journal of Business Research JF - Journal of Business Research Y1 - 2000/12// VL - 50 IS - 3 M3 - Article SP - 259 EP - 272 SN - 01482963 AB - This study examines a hierarchy of adaptive latitude and the influence of environmental, organizational and managerial characteristics on firm adaptation across three industries (aerospace, electronic components, and paper products). Results show that environmental characteristics had the greatest impact on adaptive latitude, followed by organizational characteristics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Business Research is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MANAGEMENT KW - INDUSTRIAL organization (Management) KW - INDUSTRIAL management KW - AEROSPACE industries KW - ELECTRONIC industries KW - PAPER industry KW - STRATEGIC planning N1 - Accession Number: 12134524; Koberg, Christine 1; Chesley, Julie A. 2; Heppard, Kurt A. 2; Email Address: kheppard@yahoo.com; Affiliations: 1: University of Colorado at Boulder; 2: United States Air Force Academy; Issue Info: Dec2000, Vol. 50 Issue 3, p259; Thesaurus Term: MANAGEMENT; Thesaurus Term: INDUSTRIAL organization (Management); Thesaurus Term: INDUSTRIAL management; Thesaurus Term: AEROSPACE industries; Thesaurus Term: ELECTRONIC industries; Thesaurus Term: PAPER industry; Thesaurus Term: STRATEGIC planning; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; NAICS/Industry Codes: 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 443143 Appliance, television and other electronics stores; NAICS/Industry Codes: 322121 Paper (except Newsprint) Mills; NAICS/Industry Codes: 424130 Industrial and Personal Service Paper Merchant Wholesalers; NAICS/Industry Codes: 424110 Printing and Writing Paper Merchant Wholesalers; Number of Pages: 14p; Illustrations: 5 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12134524&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR T1 - Perceptions of Sexual Harassment by Student-Employee Classification, Marital Status, and Female Racial Classification. AU - Hendrix, William H. JO - Journal of Social Behavior & Personality JF - Journal of Social Behavior & Personality Y1 - 2000/12// VL - 15 IS - 4 SP - 529 EP - 544 SN - 08861641 N1 - Accession Number: 7054691; Author: Hendrix, William H.: 1 email: william.hendrix@usafa.af.mil. ; Author Affiliation: 1 United States Air Force Academy; No. of Pages: 16; Language: English; Publication Type: Article; Update Code: 20070112 N2 - Perceptual differences in views of sexual harassment were investigated as a function of student/employee classification (United States Air Force Academy cadets, undergraduate university students, and full-time business employees), gender of the initiator, gender of the respondent, marital status of respondent, age, position power, success status, and attractiveness of the initiator. In addition, differences in sexual harassment perceptions and extent of sexual harassment experienced for Black, Hispanic, and White women were investigated. Participants were 764 individuals classified as either Air Force Academy cadets (n = 145), full-time undergraduate university students (n = 216) or full-time business employees (n = 403). Of these, approximately 58% were males and 42% females. Results indicated that behaviors were perceived as more sexually harassing if the individual was a male, older, low in success status, high in position power, and unattractive. Married and divorced individuals perceived events as more sexually harassing than did single individuals. Females perceived both male and female initiators as sexually harassing. Males, on the other hand, perceived other male initiators as sexually harassing but female initiators as less sexually harassing for the same behaviors. There were no significant differences in the perceptions of sexual harassment or in reports of sexual harassment between Black, Hispanic, and White women. ABSTRACT FROM AUTHOR KW - *SEXUAL harassment KW - *WOMEN KW - *PERCEPTION KW - *STUDENTS KW - *COLLEGE students KW - CRIMES against KW - SOCIAL perception KW - EMPLOYEES KW - MARRIED women UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=7054691&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR ID - 107011540 T1 - Use of direct digital radiography at remote dental facilities. AU - Bartoloni JA Y1 - 2000/12//2000 Dec N1 - Accession Number: 107011540. Language: English. Entry Date: 20010330. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 2984771R. KW - Medically Underserved Area -- Saudi Arabia KW - Military Medicine -- United States KW - Dentistry KW - Radiographic Image Enhancement -- Utilization KW - Radiography, Dental -- Equipment and Supplies KW - Mobile Health Units KW - Questionnaires KW - Dentists KW - Saudi Arabia KW - Sample Size KW - Military Personnel KW - United States KW - Human SP - 925 EP - 928 JO - Military Medicine JF - Military Medicine JA - MILIT MED VL - 165 IS - 12 CY - Bethesda, Maryland PB - AMSUS AB - Digital radiography is changing the practice of dentistry today. This technology offers many advantages compared with conventional radiographic techniques. These advantages include faster imaging times, elimination of conventional dental film/chemicals and processing equipment, reduced radiation exposure, the ability to enhance images, and digitization of images for storage and electronic transfer. The U.S. Air Force Dental Corps completed an evaluation of digital radiography to assess its potential use by deployed units in the field. The Schick Computed Dental Radiography Kit was selected for testing and sent to two remote sites in Saudi Arabia for analysis. After completion of a 6-month evaluation, this system was rated favorably by the evaluators and was determined to be an excellent alternative for field-use radiography. As a result of this study, digital radiography is now being integrated in all expeditionary medical support units for future field deployments. SN - 0026-4075 AD - United States Air Force Dental Investigation Service Detachment 1, United States Air Force School of Aerospace Medicine, 310C B Street, Building 1H, Great Lakes Naval Training Center, IL 60088-5259 U2 - PMID: 11149063. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107011540&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 107000457 T1 - College coaches corner. Learning from each other: adherence to training programs. AU - Hedrick A Y1 - 2000/12//2000 Dec N1 - Accession Number: 107000457. Language: English. Entry Date: 20010223. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletic Training KW - Muscle Strengthening KW - Coaches, Athletic KW - Athletes KW - Attitude KW - Cooperative Behavior KW - Communication KW - Education SP - 14 EP - 15 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 22 IS - 6 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107000457&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2000-16736-015 AN - 2000-16736-015 AU - Staal, Mark A. AU - King, Raymond E. T1 - Managing a multiple relationship environment: The ethics of military psychology. JF - Professional Psychology: Research and Practice JO - Professional Psychology: Research and Practice JA - Prof Psychol Res Pr Y1 - 2000/12// VL - 31 IS - 6 SP - 698 EP - 705 CY - US PB - American Psychological Association SN - 0735-7028 SN - 1939-1323 N1 - Accession Number: 2000-16736-015. Other Journal Title: Professional Psychology. Partial author list: First Author & Affiliation: Staal, Mark A.; US Air Force Academy, Dept of Behavioral Sciences & Leadership, Colorado Springs, CO, US. Release Date: 20001206. Correction Date: 20110214. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Military Psychology; Professional Ethics; Therapeutic Processes. Classification: Professional Ethics & Standards & Liability (3450); Military Psychology (3800). References Available: Y. Page Count: 8. Issue Publication Date: Dec, 2000. Publication History: Accepted Date: Jan 4, 2000; Revised Date: Dec 8, 1999; First Submitted Date: May 4, 1999. Copyright Statement: American Psychological Association. 2000. AB - Military psychologists often find themselves in situations having the potential to compromise their professional ethics. Although conflicts in confidentiality are frequently the issue, multiple relationship development is also a significant concern. Case examples involving multiple relationship issues are presented, and the American Psychological Association's (APA's; 1992) guidelines concerning multiple relationship expectancies are considered. Decision-making frameworks are reviewed, and an adaptation of M. C. Gottlieb's (1993) model for multiple relationship resolution is proposed. The authors suggest recommendations for training and supervision, and they encourage continued collaboration between the APA and Department of Defense so that these dilemmas may be more adequately addressed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - ethics of military psychology in managing multiple relationship environment KW - 2000 KW - Military Psychology KW - Professional Ethics KW - Therapeutic Processes KW - 2000 DO - 10.1037/0735-7028.31.6.698 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2000-16736-015&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 106992540 T1 - The nurse's role in misoprostol induction: a proposed protocol. AU - Wilson C Y1 - 2000/11// N1 - Accession Number: 106992540. Language: English. Entry Date: 20010126. Revision Date: 20150818. Publication Type: Journal Article; protocol; review; tables/charts. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. NLM UID: 8503123. KW - Misoprostol -- Administration and Dosage KW - Misoprostol -- Therapeutic Use KW - Labor, Induced KW - Research KW - Labor -- Physiology KW - Administration, Intravaginal KW - Administration, Oral KW - Misoprostol -- Contraindications KW - Misoprostol -- Economics KW - Protocols KW - Pregnancy KW - Female SP - 574 EP - 583 JO - JOGNN: Journal of Obstetric, Gynecologic & Neonatal Nursing JF - JOGNN: Journal of Obstetric, Gynecologic & Neonatal Nursing JA - JOGNN VL - 29 IS - 6 CY - Philadelphia, Pennsylvania PB - Elsevier Inc. AB - The use of misoprostol (PGE 1) for induction of labor has been studied in the United States since 1993. The current medical literature contains studies of this non-FDA-approved indication for misoprostol. The data reveal that misoprostol is as effective or more effective in inducing labor as are oxytocin and prostaglandin E2 (PGE 2), with less cost. Nurses need to understand the physiology of prostaglandins and management of misoprostol in labor. Nurses often must assess the safety of mother and fetus during a misoprostol induction without a protocol based on research findings. This article presents a sample protocol. SN - 0884-2175 AD - United States Air Force, Kessler Air Force Base -- Mississippi U2 - PMID: 11110327. DO - 10.1111/j.1552-6909.2000.tb02070.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106992540&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 107147961 T1 - College coaches corner. Learning from each other: working with coaches. AU - Hedrick A Y1 - 2000/10//2000 Oct N1 - Accession Number: 107147961. Language: English. Entry Date: 20001201. Revision Date: 20150818. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Muscle Strengthening KW - Athletic Training KW - Professional Role KW - Colleges and Universities SP - 45 EP - 46 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 22 IS - 5 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - United States Air Force Academy UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107147961&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2000-00615-003 AN - 2000-00615-003 AU - Mastroianni, George R. AU - Zupan, Michael F. AU - Chuba, Donna M. AU - Berger, Robert C. AU - Wile, Alfred L. T1 - Voluntary pacing and energy cost of off-road cycling and running. JF - Applied Ergonomics JO - Applied Ergonomics JA - Appl Ergon Y1 - 2000/10// VL - 31 IS - 5 SP - 479 EP - 485 CY - Netherlands PB - Elsevier Science SN - 0003-6870 N1 - Accession Number: 2000-00615-003. PMID: 11059461 Partial author list: First Author & Affiliation: Mastroianni, George R.; US Air Force Academy, Dept of Behavioral Sciences & Leadership, Colorado Springs, CO, US. Release Date: 20001101. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aerobic Exercise; Energy Expenditure; Running; Velocity. Classification: Recreation & Leisure (3740). Population: Human (10); Male (30). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Methodology: Empirical Study. Page Count: 7. Issue Publication Date: Oct, 2000. AB - The purposes of this study were (1) to compare self-chosen speed of off-road cyclists and runners on a hilly course, (2) to compare the energy expenditure of off-road cyclists and runners on the same terrain, and (3) to describe changes in energy expenditure over the course of the exercise period. 10 male runners and 10 male cyclists performed 3 laps on a 2.75 km gravel course in a single exercise bout. The course was divided into 13 segments differing in grade and length. Position on the course and heart rate were recorded every few seconds. Speed was computed for each course segment on each lap; energy expenditure was estimated using recorded heart rates and exercise-specific maximal oxygen uptake measurements made prior to participation in the study. There were significant relationships between grade and speed for both runners (r = 0.64) and cyclists (r = 0.44). The differences between cyclists and runners were greatest on downhill segments. Energy expenditure rates were not significantly different for runners (71.6% VO₂ peak) and cyclists (68.5% VO₂ peak). The authors conclude that off-road cycling and running are comparable in energy demands. Variation in skill levels may account for the increased variability in speed among cyclists on downhill terrain. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - voluntary pacing & energy cost KW - male recreational off-road cyclists vs runners KW - 2000 KW - Aerobic Exercise KW - Energy Expenditure KW - Running KW - Velocity KW - 2000 DO - 10.1016/S0003-6870(00)00017-X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2000-00615-003&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Colle, Herbert A. AU - Reid, Gary B. T1 - The Room Effect: Exploring Paths and Rooms in a Desktop Virtual Environment With Objects Grouped Categorically and Spatially. JO - Ecological Psychology JF - Ecological Psychology Y1 - 2000/09// VL - 12 IS - 3 M3 - Article SP - 207 EP - 229 PB - Taylor & Francis Ltd SN - 10407413 AB - People rapidly learn the spatial layout of the interior of rooms when they navigate through a building to perform everyday tasks in a simulated environment, a phenomenon called the room effect. Three experiments showed that the room effect did not depend on the categorical or functional utilization of rooms or on the exploration routes taken. Although there was a strong effect of whether or not the objects in the rooms all came from the same category or not, this object organization effect was independent of the room effect. Second, the room effect was just as strong when objects in different rooms were visited successively as it was when all objects in a room were visited before moving to the next room. The results are difficult to explain from the landmark-route-survey model or other extant explanations. A characteristic enclosure framework explanation is proposed. [ABSTRACT FROM AUTHOR] AB - Copyright of Ecological Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Virtual reality KW - Rooms KW - Ohio KW - United States N1 - Accession Number: 3376964; Colle, Herbert A. 1; Reid, Gary B. 2; Affiliations: 1: Department of Psychology, Wright State University; 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio; Issue Info: 2000, Vol. 12 Issue 3, p207; Subject Term: Virtual reality; Subject Term: Rooms; Subject: Ohio; Subject: United States; Number of Pages: 23p; Illustrations: 3 Charts, 1 Graph; Document Type: Article; Full Text Word Count: 10800 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=3376964&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Carretta, Thomas R. AU - Zelenski, Warren E. AU - Ree, Malcolm James T1 - Basic Attributes Test (BAT) Retest Performance. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2000/09// VL - 12 IS - 3 M3 - Article SP - 221 EP - 232 PB - Taylor & Francis Ltd SN - 08995605 AB - The Basic Attributes Test (BAT) contributes to a U.S. Air Force pilot selection composite known as the Pilot Candidate Selection Method (PCSM). When PCSM was operationally implemented in 1993, no retests were permitted on the BAT. To determine the effects of retesting on mean score change and reliability, the BAT was administered to 477 college students who were then retested after 2 weeks, 3 months, or 6 months. Several important findings were observed. First, about 70% of the students exhibited score improvement on retest, regardless of length of retest interval. Those who performed poorly on the 1st test generally exhibited larger improvements than those who performed well on the 1st test. Second, practice effects diminished as the length of the retest interval increased. For a 6-month retest interval, it was expected that the mean increase in PCSM scores would be about 6 percentile points. The results suggest that BAT retests could be permitted no less than 6 months after initial testing. Third, and very important, BAT scores demonstrated acceptable reliability. The reliability of the psychomotor composite ranged from .775 to .800, and the reliabilities for the other subtests ranged from .474 to .871. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDUCATIONAL tests & measurements -- United States KW - UNITED States. Air Force KW - COLLEGE students -- United States KW - UNITED States N1 - Accession Number: 3455317; Carretta, Thomas R. 1; Zelenski, Warren E. 2; Ree, Malcolm James 3; Source Information: Jul2000, Vol. 12 Issue 3, p221; Subject: EDUCATIONAL tests & measurements -- United States; Subject: UNITED States. Air Force; Subject: COLLEGE students -- United States; Geographic Terms: UNITED States; Number of Pages: 12p; Illustrations: 5 Charts, 1 Graph; Document Type: Article; Full Text Word Count: 4155 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=3455317&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Besselman, Joseph AU - Arora, Ashish AU - Larkey, Patrick T1 - Buying in a Businesslike Fashion -- And Paying More? JO - Public Administration Review JF - Public Administration Review Y1 - 2000/09// VL - 60 IS - 5 M3 - Article SP - 421 EP - 434 PB - Wiley-Blackwell SN - 00333352 AB - The government, particularly the Department of Defense (DoD), is undergoing yet another wave of acquisition reforms, which are intended to bring commercial buying practices to DoD's purchasing operations. This research shows that, prior to these reforms, the DoD's buying practices were superior to commercial practices in terms of prices paid for a large number of electronic and engine parts. The research compares DoD and purchasing of more than 676,000 identical items costing more than $60 million with commercial purchasing of the identical items. It finds that the DoD's purchasing superiority holds even when purchasing costs are considered. The DoD achieved these results because it was already using commercial practices commonly followed by large firms: aggregating purchases, using cost data, and negotiating aggressively in markets with few suppliers. Some of the recent reforms will undermine the DoD's ability to exploit these common commercial practices and will raise the government's costs. [ABSTRACT FROM AUTHOR] AB - Copyright of Public Administration Review is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GOVERNMENT purchasing KW - PURCHASING KW - BEST practices KW - UNITED States KW - UNITED States. Dept. of Defense N1 - Accession Number: 3539261; Besselman, Joseph 1; Email Address: jae.besselman@pentagon.af.mil; Arora, Ashish 2; Email Address: ashish@andrew.emu.edu; Larkey, Patrick 2; Email Address: pll5@andrew.cmu.edu; Affiliations: 1: United States Air Force; 2: Carnegie Mellon University; Issue Info: Sep2000, Vol. 60 Issue 5, p421; Thesaurus Term: GOVERNMENT purchasing; Thesaurus Term: PURCHASING; Thesaurus Term: BEST practices; Subject: UNITED States ; Company/Entity: UNITED States. Dept. of Defense; NAICS/Industry Codes: 921190 Other General Government Support; Number of Pages: 14p; Illustrations: 3 Graphs; Document Type: Article; Full Text Word Count: 10311 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=3539261&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 2000-02506-004 AN - 2000-02506-004 AU - Carretta, Thomas R. T1 - U.S. Air Force pilot selection and training methods. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 2000/09// VL - 71 IS - 9,Sect1 SP - 950 EP - 956 CY - US PB - Aerospace Medical Assn SN - 0095-6562 N1 - Accession Number: 2000-02506-004. Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Carretta, Thomas R.; Wright-Patterson AFB, Air Force Research Laboratory Human Effectiveness Directorate, Crew Systems Development Branch, OH, US. Release Date: 20000920. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Aircraft Pilots; Personnel Selection; Teaching Methods. Minor Descriptor: Military Training. Classification: Occupational & Employment Testing (2228); Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Page Count: 7. Issue Publication Date: Sep, 2000. AB - Reviews changes in U.S. Air Force (USAF) pilot selection and training procedures that have occurred in the last 5 years. Pilot selection procedures have changed to take advantage of computer-based testing to assess pilot aptitude, while training procedures have changed in an effort to modernize the training fleet and provide better, more specialized training earlier in the training cycle. Despite several studies showing the utility of USAF pilot aptitude tests for predicting training performance, results of a recent policy capturing study suggest that this information is often ignored by pilot candidate selection boards. The 2 largest sources of USAF pilot trainees relied heavily on measures of officership when making selection decisions. Cumulative research findings suggest that USAF pilot selection decisions could be improved by making better use of currently available personnel attribute data. It is suggested that further improvements could be expected from the addition of a structured selection interview and measures of personality. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - pilot selection procedures & training methods KW - US Air Force KW - 2000 KW - Air Force Personnel KW - Aircraft Pilots KW - Personnel Selection KW - Teaching Methods KW - Military Training KW - 2000 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2000-02506-004&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 107135994 T1 - Humanatarian health tour in Peru: a first-hand account. AU - Kennedy C Y1 - 2000/08//2000 Aug N1 - Accession Number: 107135994. Language: English. Entry Date: 20001001. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. NLM UID: 7605913. KW - Military Nursing KW - International Relations KW - Emergency Nursing KW - Peru KW - United States SP - 33A EP - 4A JO - JEN: Journal of Emergency Nursing JF - JEN: Journal of Emergency Nursing JA - J EMERG NURS VL - 26 IS - 4 CY - New York, New York PB - Elsevier Science SN - 0099-1767 AD - Assistant Nurse Manager, Emergency Dept, US Air Force Academy, Colorado Springs, CO U2 - PMID: 11386240. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107135994&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 107136791 T1 - Helicobacter pylori: an emerging infectious disease. AU - McManus TJ Y1 - 2000/08//2000 Aug N1 - Accession Number: 107136791. Language: English. Entry Date: 20001001. Revision Date: 20150819. Publication Type: Journal Article; CEU; consumer/patient teaching materials; exam questions; pictorial; tables/charts. Journal Subset: Core Nursing; Double Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Nursing; Peer Reviewed; USA. NLM UID: 7603663. KW - Helicobacter Infections KW - Adult KW - Child KW - Diagnosis, Laboratory KW - Education, Continuing (Credit) KW - Helicobacter Infections -- Complications KW - Helicobacter Infections -- Diagnosis KW - Helicobacter Infections -- Drug Therapy KW - Helicobacter Infections -- Epidemiology KW - Helicobacter Infections -- Etiology KW - Helicobacter Infections -- Transmission KW - Patient Education KW - Peptic Ulcer -- Etiology KW - Stomach Neoplasms -- Etiology SP - 40 EP - 48 JO - Nurse Practitioner JF - Nurse Practitioner JA - NURSE PRACT VL - 25 IS - 8 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - Helicobacter pylori is the most common chronic bacterial infection in the world, colonizing the stomachs of more than 50% of the human population. The discovery of this bacterium has changed the concept of care and management for peptic ulcer disease, mucosa-associated lymphomas, gastritis, and gastric carcinoma. Although the mode of transmission is not definitively known, person-to-person contact is suspected. This article discusses H. pylori, the associated clinical syndromes and diseases, risk factors, and current pharmacologic management. SN - 0361-1817 AD - Nurse Practitioner, United States Air Force NC, University States Air Force Academy, Colorado Springs, Colo U2 - PMID: 10971934. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107136791&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR TY - GEN AU - McManus, T. J.; T1 - Helicobacter pylori: emerging infectious diseases CT - Helicobacter pylori: emerging infectious diseases JO - Nurse Practitioner (USA) JF - Nurse Practitioner (USA) Y1 - 2000/08/01/ VL - 25 IS - Aug SP - 40 EP - 55 SN - 03611817 AD - United States Air Force Acad., Colorado Springs, CO, USA N1 - Accession Number: 38-10798; Language: English; References: 44; Publication Type: Review; Journal Coden: NRPRDJ; Human Indicator: Yes; Section Heading: Pharmacology; Drug Evaluations; Abstract Author: Lisa Webster N2 - A review of Helicobacter pylori, the associated clinical syndromes and diseases, risk factors, and current pharmacological management is presented, including diagnostic tests and antibiotic treatment dosage schedules and efficacies. KW - Helicobacter pylori--overview; KW - Tests, laboratory--helicobacter infections--diagnosis; KW - Diagnosis--helicobacter infections--tests; KW - Antibiotics--helicobacter infections--overview; KW - Dosage schedules--antibiotics--helicobacter infections; KW - Helicobacter infections--overview; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ipa&AN=38-10798&site=ehost-live&scope=site DP - EBSCOhost DB - ipa ER - TY - JOUR ID - 107133344 T1 - Case review. Hamstring injury in a male collegiate sprinter. AU - Ross M Y1 - 2000/07// N1 - Accession Number: 107133344. Language: English. Entry Date: 20050425. Revision Date: 20150820. Publication Type: Journal Article; case study; pictorial. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 9602352. KW - Hamstring Muscles -- Injuries KW - Athletic Injuries KW - Athletes, College KW - Running KW - Male KW - Adult SP - 42 EP - 43 JO - Athletic Therapy Today JF - Athletic Therapy Today JA - ATHLETIC THER TODAY VL - 5 IS - 4 CY - Champaign, Illinois PB - Human Kinetics Publishers, Inc. SN - 1078-7895 AD - Physical Therapist and Instructor, Department of Biology, US Air Force Academy UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107133344&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Lance, Charles E. AU - Johnson, C. Douglas AU - Douthitt, Shane S. AU - Bennett Jr., Winston AU - Harville, Donald L. T1 - Good News: Work Sample Administrators' Global Performance Judgments are (About) as Valid as We've Suspected. JO - Human Performance JF - Human Performance Y1 - 2000/07// VL - 13 IS - 3 M3 - Article SP - 253 EP - 277 PB - Taylor & Francis Ltd SN - 08959285 AB - Data obtained on over 1,500 first-term U.S. Air Force enlisted personnel indicated that work sample administrators' global ratings of work sample performance substantially reflect actual ratee behavior in the work sample, and not potentially biasing factors (e.g., race, gender, amount of recent experience), supporting the "folk wisdom" that these global performance judgments are, in fact, valid and unbiased measures of performance. Good news! [ABSTRACT FROM AUTHOR] AB - Copyright of Human Performance is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WORK sampling KW - JOB evaluation KW - EMPLOYEES -- Rating of N1 - Accession Number: 3364834; Lance, Charles E. 1; Johnson, C. Douglas 1; Douthitt, Shane S. 1; Bennett Jr., Winston 2; Harville, Donald L. 2; Affiliations: 1: Department of Psychology, The University of Georgia; 2: Air Force Research Laboratory; Issue Info: 2000, Vol. 13 Issue 3, p253; Thesaurus Term: WORK sampling; Thesaurus Term: JOB evaluation; Thesaurus Term: EMPLOYEES -- Rating of; Number of Pages: 25p; Illustrations: 5 Charts; Document Type: Article; Full Text Word Count: 10726 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=3364834&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 107130827 T1 - Research and professional briefs. Expert panel identifies activities and performance measures for foodservice benchmarking. AU - Johnson BC AU - Chambers MJ Y1 - 2000/06// N1 - Accession Number: 107130827. Language: English. Entry Date: 20000901. Revision Date: 20150819. Publication Type: Journal Article; research; tables/charts. Journal Subset: Allied Health; Biomedical; Peer Reviewed; USA. NLM UID: 7503061. KW - Food Services KW - Benchmarking KW - Delphi Technique KW - Questionnaires KW - Cluster Analysis KW - Human SP - 692 EP - 695 JO - Journal of the American Dietetic Association JF - Journal of the American Dietetic Association JA - J AM DIET ASSOC VL - 100 IS - 6 CY - New York, New York PB - Elsevier Science SN - 0002-8223 AD - Air Combat Command Consultant Dietitian, Langley Air Force Base, Va U2 - PMID: 10863573. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107130827&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 107133015 T1 - College coaches corner. Learning from each other: discipline. AU - Hedrick A Y1 - 2000/06//2000 Jun N1 - Accession Number: 107133015. Language: English. Entry Date: 20001001. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletic Training KW - Student Discipline KW - Athletes, College SP - 78 EP - 79 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 22 IS - 3 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107133015&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - McDougal, James N. AU - Pollard, Daniel L. AU - Weisman, Wade AU - Garrett, Carol M. AU - Miller, Thomas E. T1 - Assessment of Skin Absorption and Penetration of JP-8 Jet Fuel and Its Components. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 2000/06// VL - 55 IS - 2 M3 - Article SP - 247 EP - 255 PB - Oxford University Press / USA SN - 10966080 AB - Dermal penetration and absorption of jet fuels in general, and JP-8 in particular, is not well understood, even though government and industry, worldwide, use over 4.5 billion gallons of JP-8 per year. Exposures to JP-8 can occur from vapor, liquid, or aerosol. Inhalation and dermal exposure are the most prevalent routes. JP-8 may cause irritation during repeated or prolonged exposures, but it is unknown whether systemic toxicity can occur from dermal penetration of fuels. The purpose of this investigation was to measure the penetration and absorption of JP-8 and its major constituents with rat skin, so that the potential for effects with human exposures can be assessed. We used static diffusion cells to measure both the flux of JP-8 and components across the skin and the kinetics of absorption into the skin. Total flux of the hydrocarbon components was 20.3 micrograms/cm2/h. Thirteen individual components of JP-8 penetrated into the receptor solution. The fluxes ranged from a high of 51.5 micrograms/cm2/h (an additive, diethylene glycol monomethyl ether) to a low of 0.334 micrograms/cm2/h (tridecane). Aromatic components penetrated most rapidly. Six components (all aliphatic) were identified in the skin. Concentrations absorbed into the skin at 3.5 h ranged from 0.055 micrograms per gram skin (tetradecane) to 0.266 micrograms per gram skin (undecane). These results suggest: (1) that JP-8 penetration will not cause systemic toxicity because of low fluxes of all the components; and (2) the absorption of aliphatic components into the skin may be a cause of skin irritation. [ABSTRACT FROM PUBLISHER] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSIOLOGY KW - FUEL KW - Hydrocarbons KW - Skin absorption KW - Skin KW - Jet planes KW - Diethylene glycol KW - decane KW - dermal absorption KW - dermatomed skin KW - diethylene glycol monomethyl ether KW - dimethyl benzene (xylene) KW - dimethyl naphthalene KW - dodecane KW - ethyl benzene KW - Fischer 344 rat KW - flux KW - jet fuel KW - JP-8 KW - methyl benzene (toluene) KW - methyl naphthalene KW - mixture KW - naphthalene KW - nonane KW - pentadecane KW - permeability coefficient KW - skin concentration KW - skin penetration KW - static diffusion cell KW - tetradecane KW - tridecane KW - trimethyl benzene KW - undecane N1 - Accession Number: 44611690; McDougal, James N. 1; Email Address: james.mcdougal@wpafb.af.mil; Pollard, Daniel L. 2; Weisman, Wade 3; Garrett, Carol M. 1; Miller, Thomas E. 3; Affiliations: 1: Geo-Centers, Inc., 2856 G Street (AFRL/HEST), Wright-Patterson Air Force Base, Ohio 45433-7400; 2: Mantech, P.O. Box 31009, Dayton, Ohio 45437-0009; 3: Operational Toxicology Branch, Air Force Research Laboratory (AFRL/HEST), 2856 G Street, Building 79, Wright-Patterson Air Force Base, Ohio 45433-7400; Issue Info: Jun2000, Vol. 55 Issue 2, p247; Thesaurus Term: PHYSIOLOGY; Thesaurus Term: FUEL; Thesaurus Term: Hydrocarbons; Subject Term: Skin absorption; Subject Term: Skin; Subject Term: Jet planes; Subject Term: Diethylene glycol; Author-Supplied Keyword: decane; Author-Supplied Keyword: dermal absorption; Author-Supplied Keyword: dermatomed skin; Author-Supplied Keyword: diethylene glycol monomethyl ether; Author-Supplied Keyword: dimethyl benzene (xylene); Author-Supplied Keyword: dimethyl naphthalene; Author-Supplied Keyword: dodecane; Author-Supplied Keyword: ethyl benzene; Author-Supplied Keyword: Fischer 344 rat; Author-Supplied Keyword: flux; Author-Supplied Keyword: jet fuel; Author-Supplied Keyword: JP-8; Author-Supplied Keyword: methyl benzene (toluene); Author-Supplied Keyword: methyl naphthalene; Author-Supplied Keyword: mixture; Author-Supplied Keyword: naphthalene; Author-Supplied Keyword: nonane; Author-Supplied Keyword: pentadecane; Author-Supplied Keyword: permeability coefficient; Author-Supplied Keyword: skin concentration; Author-Supplied Keyword: skin penetration; Author-Supplied Keyword: static diffusion cell; Author-Supplied Keyword: tetradecane; Author-Supplied Keyword: tridecane; Author-Supplied Keyword: trimethyl benzene; Author-Supplied Keyword: undecane; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 9p; Illustrations: 1 Diagram, 5 Charts, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=44611690&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 107122909 T1 - Current concepts. Imaging techniques for the evaluation of glenohumeral instability. AU - Sanders TG AU - Morrison WB AU - Miller MD A2 - Foster TE A2 - Mandelbaum BR Y1 - 2000/05//May/Jun2000 N1 - Accession Number: 107122909. Language: English. Entry Date: 20000801. Revision Date: 20150819. Publication Type: Journal Article; diagnostic images; pictorial; review; tables/charts. Journal Subset: Allied Health; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 7609541. KW - Glenohumeral Joint -- Pathology KW - Joint Instability -- Diagnosis KW - Diagnostic Imaging -- Methods KW - Glenohumeral Joint -- Radiography KW - Magnetic Resonance Imaging KW - Arthrography KW - Body Weights and Measures KW - Posture KW - Joint Instability -- Radiography KW - Glenohumeral Joint -- Anatomy and Histology SP - 414 EP - 434 JO - American Journal of Sports Medicine JF - American Journal of Sports Medicine JA - AM J SPORTS MED VL - 28 IS - 3 CY - Thousand Oaks, California PB - Sage Publications Inc. AB - The ability to image lesions associated with glenohumeral instability has evolved significantly over the past 2 decades. In the past, several imaging techniques ranging from conventional radiography to computerized axial arthrography and, most recently, to magnetic resonance imaging have been used to depict various labral abnormalities. In most instances, conventional radiography remains the initial imaging study for evaluating the patient with persistent shoulder pain and instability. Recently, however, magnetic resonance arthrography has been firmly established as the imaging modality of choice for demonstrating specific soft tissue abnormalities associated with glenohumeral instability. This article will review the role of various imaging modalities including conventional radiography, conventional arthrography, computerized axial arthrography, magnetic resonance imaging, and magnetic resonance arthrography. Emphasis will be placed on the role of magnetic resonance arthrography as it pertains to the lesions associated with glenohumeral instability. A thorough discussion of the appearance of normal anatomic structures, anatomic variations that mimic abnormality, and the various lesions associated with glenohumeral instability will be provided. SN - 0363-5465 AD - Dept of Radiology, Wilford Hall United States Air Force Medical Center, 759th MDTS/MTRD, 2200 Bergquist Dr, Ste 1, Lackland AFB, TX 78236-5300 U2 - PMID: 10843139. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107122909&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 107122985 T1 - Test-retest reliability of the standing heel-rise test. AU - Ross MD AU - Fontenot EG Y1 - 2000/05// N1 - Accession Number: 107122985. Language: English. Entry Date: 20000801. Revision Date: 20150820. Publication Type: Journal Article; research; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 9206500. KW - Instrument Validation KW - Motor Skills KW - Exercise Test, Muscular KW - Leg KW - Test-Retest Reliability KW - Male KW - Female KW - Adult KW - Descriptive Statistics KW - Body Weights and Measures KW - Military Personnel KW - Goniometry KW - Biophysiological Methods KW - Dynamometry KW - T-Tests KW - Intraclass Correlation Coefficient KW - Analysis of Variance KW - Repeated Measures KW - Comparative Studies KW - Human SP - 117 EP - 123 JO - Journal of Sport Rehabilitation JF - Journal of Sport Rehabilitation JA - J SPORT REHABIL VL - 9 IS - 2 CY - Champaign, Illinois PB - Human Kinetics Publishers, Inc. AB - Context: The standing heel-rise test has been recommended as a means of assessing calf-muscle performance. To the authors' knowledge, the reliability of the test using intraclass correlation coefficients (ICCs) has not been reported. Objective: To determine the test-retest reliability of the standing heel-rise test. Design: Single-group repeated measures. Participants: Seventeen healthy subjects. Settings and Intervention: Each subject was asked to perform as many standing heel raises as possible during 2 testing sessions separated by 7 days. Main Outcome Measures: Reliability data for the standing heel-rise test were studied through a repeated-measures analysis of variance, ICC(2.1), and SEMs. Results: The ICC(2,1) and SEM values for the standing heel-rise test were .96 and 2.07 repetitions, respectively. Conclusions: The standing heel-rise test offers clinicians a reliable assessment of calfmuscle performance. Further study is necessary to determine the ability of the standing heel-rise test to detect functional deficiencies in patients recovering from lower leg injury or surgery. SN - 1056-6716 AD - Instructor, Dept of Biology, United States Air Force Academy, CO 80840-6226 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107122985&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 107125503 T1 - College coaches corner. Learning from each other: motivation. AU - Hedrick A Y1 - 2000/04//2000 Apr N1 - Accession Number: 107125503. Language: English. Entry Date: 20000801. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletic Training -- Psychosocial Factors KW - Motivation KW - Athletes, College SP - 36 EP - 37 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 22 IS - 2 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107125503&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Yu, Kyung O. AU - Barton, Hugh A. AU - Mahle, Deirdre A. AU - Frazier, John M. T1 - Biotransformation and Toxicokinetics. In Vivo Kinetics of Trichloroacetate in Male Fischer 344 Rats. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 2000/04// VL - 54 IS - 2 M3 - Article SP - 302 EP - 311 PB - Oxford University Press / USA SN - 10966080 AB - Trichloroacetate (TCA) is a toxicologically important metabolite of the industrial solvents trichloroethylene and tetrachloroethylene, and a by-product of the chlorination of drinking water. Tissue disposition and elimination of 14C-TCA were investigated in male Fischer 344 rats injected iv with 6.1, 61, or 306 μmol TCA/kg body weight. Blood and tissues were collected at various time points up to 24 h. No metabolites were observed in plasma, urine, or tissue extracts. Overall TCA kinetics in tissues were similar at all doses. Based on similar terminal elimination rate constants, tissues could be divided into three classes: plasma, RBC, muscle, and fat; kidney and skin; and liver, small intestine, and large intestine. Nonextractable radiolabel, assumed to be biologically incorporated metabolites in both liver and plasma, increased with time, peaking at 6–9 h postinjection. The fraction of the initial dose excreted in the urine at 24 h increased from 67% to 84% as the dose increased, whereas fecal excretion decreased from 7% to 4%. The cumulative elimination of TCA as CO2 at 24 h decreased from 12% to 8% of the total dose. Two important kinetic processes were identified: a) hepatic intracellular concentrations of TCA were significantly greater than free plasma concentrations, indicating concentrative transport at the hepatic sinusoidal plasma membrane, and b) TCA appears to be reabsorbed from urine postfiltration at the glomerulus, either in the renal tubules or in the bladder. These processes have an impact on the effective tissue dosimetry in liver and kidney and may play an important role in TCA toxicity. [ABSTRACT FROM PUBLISHER] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Solvents KW - Industrial toxicology KW - Trichloroethylene KW - Tetrachloroethylene KW - Protein binding KW - Rats as laboratory animals KW - elimination kinetics KW - Fischer 344 rats KW - in vivo KW - pharmacokinetics KW - protein binding KW - trichloroacetate N1 - Accession Number: 44405939; Yu, Kyung O. 1; Barton, Hugh A. 2; Mahle, Deirdre A. 1; Frazier, John M. 1; Email Address: john.frazier@he.wpafb.af.mil; Affiliations: 1: Operational Toxicology Branch, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433; 2: Pharmacokinetics Branch, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27711; Issue Info: Apr2000, Vol. 54 Issue 2, p302; Thesaurus Term: Solvents; Thesaurus Term: Industrial toxicology; Thesaurus Term: Trichloroethylene; Thesaurus Term: Tetrachloroethylene; Subject Term: Protein binding; Subject Term: Rats as laboratory animals; Author-Supplied Keyword: elimination kinetics; Author-Supplied Keyword: Fischer 344 rats; Author-Supplied Keyword: in vivo; Author-Supplied Keyword: pharmacokinetics; Author-Supplied Keyword: protein binding; Author-Supplied Keyword: trichloroacetate; NAICS/Industry Codes: 112990 All Other Animal Production; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 10p; Illustrations: 1 Chart, 6 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=44405939&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2014-12362-001 AN - 2014-12362-001 AU - Previc, Fred H. AU - Liotti, Mario AU - Blakemore, Colin AU - Beer, Jeremy AU - Fox, Peter T1 - Functional imaging of brain areas involved in the processing of coherent and incoherent wide field-of-view visual motion. JF - Experimental Brain Research JO - Experimental Brain Research JA - Exp Brain Res Y1 - 2000/04// VL - 131 IS - 4 SP - 393 EP - 405 CY - Germany PB - Springer SN - 0014-4819 SN - 1432-1106 AD - Previc, Fred H., TASC Inc, 4241 Woodcock Dr. Ste B100, San Antonio, TX, US, 78228 N1 - Accession Number: 2014-12362-001. PMID: 10803409 Partial author list: First Author & Affiliation: Previc, Fred H.; Flight Motion Effects Branch, Flight Stress Protection Division, Air Force Research Laboratory, Brooks Air Force Base, TX, US. Release Date: 20161006. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Previc, Fred H. Major Descriptor: Motion Perception; Neurology; Vision; Insula. Minor Descriptor: Positron Emission Tomography. Classification: Neuropsychology & Neurology (2520). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360). Methodology: Brain Imaging; Empirical Study; Quantitative Study. Page Count: 13. Issue Publication Date: Apr, 2000. Publication History: First Posted Date: Mar 8, 2000; Accepted Date: Nov 6, 1999; First Submitted Date: Jan 25, 1999. Copyright Statement: Springer-Verlag. 2000. AB - The brain areas involved in processing wide field-of-view (FOV) coherent and incoherent visual stimuli were studied using positron emission tomography (PET). The brains of nine subjects were scanned as they viewed texture patterns moving in the roll plane. Five visual conditions were used: (1) coherent clockwise (CW) wide-FOV (> 100°) roll motion; (2) coherent counterclockwise (CCW) wide-FOV roll motion; (3) wide-FOV incoherent motion; (4) CCW motion confined to the central visual field (~55°); and (5) a stationary control texture. The region most activated by the coherent-motion stimulus relative to the static one was the medial-occipital cortex, whereas both the medial- and lateral-occipital cortices were activated by incoherent motion relative to a static texture. Portions of the retroinsular parietal-temporal cortex, superior insula, putamen, and vestibulocerebellum responded specifically to the coherence of the stimulus, whereas a widespread lateralized activation was observed upon subtracting the CW scans from the CCW scans. The results indicate separate neural regions for processing wide-FOV motion versus stimulus coherence. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - Ambient KW - Vision KW - PET KW - Motion KW - Vection KW - 2000 KW - Motion Perception KW - Neurology KW - Vision KW - Insula KW - Positron Emission Tomography KW - 2000 U1 - Sponsor: Air Force Research Laboratory. Recipients: Previc, Fred H. U1 - Sponsor: Air Force Office of Scientific Research. Recipients: Blakemore, Colin DO - 10.1007/s002219900298 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2014-12362-001&site=ehost-live&scope=site UR - fred.previc@brooks.af.mil DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 106996407 T1 - Issues related to longitudinal studies: overview...33rd Annual Communicating Nursing Research Conference/14th Annual WIN Assembly, 'Building on a Legacy of Excellence in Nursing Research,' held April 13-15, 2000 at the Adam's Mark Hotel, Denver, Colorado AU - Duong DN Y1 - 2000///2000 Spring N1 - Accession Number: 106996407. Language: English. Entry Date: 20010209. Revision Date: 20150711. Publication Type: Journal Article; abstract. Journal Subset: Nursing; Peer Reviewed; USA. NLM UID: 7707277. KW - Prospective Studies SP - 122 EP - 122 JO - Communicating Nursing Research JF - Communicating Nursing Research JA - COMMUN NURS RES VL - 33 CY - Boulder, Colorado PB - Western Interstate Commission for Higher Education SN - 0160-1652 AD - Director, Clinical Research, Clinical Research Division, United States Air Force Kessler Medical Center, Biloxi, MS UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=106996407&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Ciccotello, Conrad S. AU - Hornyak, Martin J. AD - GA State U AD - US Air Force Academy T1 - Cooperation via Contract: An Analysis of Research and Development Agreements JO - Journal of Corporate Finance JF - Journal of Corporate Finance Y1 - 2000/03// VL - 6 IS - 1 SP - 1 EP - 24 SN - 09291199 N1 - Accession Number: 0526884; Keywords: Contracts; R&D; Reputation; Research and Development; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 200006 N2 - We examine research and development (R&D) agreements between government agencies and other organizations. Consistent with theories of contractual "hold up," contracts are longer and more complete when the parties envision a joint product as opposed to when they merely plan to share information. Contracts are less complete when the parties have an ongoing business relationship, suggesting an interaction between reputation and explicit contracting. While our experiment cannot dismiss the possibility that these empirical regularities simply reflect the nature of the parties' joint investment, the findings are consistent with arguments that theories of contracting for tangible inputs also pertain to R&D. KW - Management of Technological Innovation and R&D O32 KW - Transactional Relationships; Contracts and Reputation; Networks L14 L3 - http://www.sciencedirect.com/science/journal/09291199 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0526884&site=ehost-live&scope=site UR - http://www.sciencedirect.com/science/journal/09291199 DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Johnson, Glenn R. AU - Jain, Rakesh K. AU - Spain, Jim C. T1 - Properties of the trihydroxytoluene oxygenase from Burkholderia cepacia R34: an extradiol dioxygenase from the 2,4-dinitrotoluene pathway. JO - Archives of Microbiology JF - Archives of Microbiology Y1 - 2000/02// VL - 173 IS - 2 M3 - Article SP - 86 EP - 90 PB - Springer Science & Business Media B.V. SN - 03028933 AB - Burkholderia cepacia R34 mineralizes 2,4-dinitrotoluene via an oxidative pathway. The initial steps in the degradative pathway lead to formation of 2,4,5-trihydroxytoluene, which serves as the substrate for the ring cleavage dioxygenase. The trihydroxylated substrate differs from the usual substituted catechols found in pathways for aromatic compound degradation. To determine whether the characteristics of the trihydroxytoluene oxygenase reflect the unusual ring cleavage substrate of the 2,4-dinitrotoluene pathway, the gene encoding trihydroxytoluene oxygenase (dntD) was cloned and sequenced, and ring cleavage activity determined from recombinant bacteria carrying the cloned gene. The findings were compared to the trihydroxytoluene oxygenase from Burkholderia sp. strain DNT and to other previously described ring cleavage dioxygenases. The comparison revealed that only 60% identity was shared by the two trihydroxytoluene oxygenases, but the amino acid residues involved in cofactor binding, catalysis, and protein folding were conserved in the DntD sequence. The enzyme catalyzed meta-fission of trihydroxytoluene as well as the substrate analogues 1,2,4-benzenetriol, catechol, 3-methylcatechol, 4-methylcatechol, 3-chlorocatechol, 4-chlorocatechol and 2,3-dihydroxybiphenyl. However, results from enzyme assays indicated a strong preference for trihydroxytoluene, implying that it was the native substrate for the enzyme. The apparent enzyme specificity, its similarity to the trihydroxytoluene oxygenase from Burkholderia sp. strain DNT, and the distant genetic relationship to other ring cleavage enzymes suggest that dntD evolved expressly to carry out trihydroxytoluene transformation. [ABSTRACT FROM AUTHOR] AB - Copyright of Archives of Microbiology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MORPHOLOGY KW - Organonitrogen compounds KW - Aromatic compounds KW - Microbiology KW - Bacteria KW - Nitroaromatic compounds KW - Nitrotoluene KW - Oxidoreductases KW - Dioxygenase KW - Nitroaromatic compound KW - Ring cleavage KW - Trihydroxytoluene N1 - Accession Number: 15731229; Johnson, Glenn R. 1; Jain, Rakesh K. 1,2; Spain, Jim C. 1; Email Address: jim.spain@mlq.afrl.af.mil; Affiliations: 1: Air Force Research Laboratory, U.S. Air Force, 139 Barnes Drive, Suite 2, Tyndall AFB, FL 32403, USA; 2: Institute of Microbial Technology, Sector 39-A, Chandigarh 160036, India; Issue Info: Feb2000, Vol. 173 Issue 2, p86; Thesaurus Term: MORPHOLOGY; Thesaurus Term: Organonitrogen compounds; Thesaurus Term: Aromatic compounds; Thesaurus Term: Microbiology; Subject Term: Bacteria; Subject Term: Nitroaromatic compounds; Subject Term: Nitrotoluene; Subject Term: Oxidoreductases; Author-Supplied Keyword: Dioxygenase; Author-Supplied Keyword: Nitroaromatic compound; Author-Supplied Keyword: Ring cleavage; Author-Supplied Keyword: Trihydroxytoluene; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 5p; Document Type: Article L3 - 10.1007/s002039900111 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=15731229&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 107102672 T1 - Foodservice benchmarking: practices, attitudes, and beliefs of foodservice directors. AU - Johnson BC AU - Chambers J Y1 - 2000/02// N1 - Accession Number: 107102672. Language: English. Entry Date: 20000401. Revision Date: 20150819. Publication Type: Journal Article; CEU; exam questions; research; tables/charts. Journal Subset: Allied Health; Biomedical; Peer Reviewed; USA. NLM UID: 7503061. KW - Food Services KW - Benchmarking -- Utilization KW - Administrative Personnel KW - Attitude of Health Personnel KW - Survey Research KW - Questionnaires KW - Descriptive Statistics KW - Chi Square Test KW - Education, Continuing (Credit) KW - Human SP - 175 EP - 182 JO - Journal of the American Dietetic Association JF - Journal of the American Dietetic Association JA - J AM DIET ASSOC VL - 100 IS - 2 CY - New York, New York PB - Elsevier Science SN - 0002-8223 AD - Air Combat Command Consultant Dietitian/Element Chief, Nutritional Medicine Service, 1st MDG/SGSAD, Langley AFB, VA U2 - PMID: 10670389. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107102672&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 107125479 T1 - College coaches corner. Learning from each other: creatine. AU - Hedrick A Y1 - 2000/02//2000 Feb N1 - Accession Number: 107125479. Language: English. Entry Date: 20000801. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Creatine KW - Ergogenic Products KW - Athletic Training KW - Dietary Supplementation KW - Coaches, Athletic SP - 13 EP - 14 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 22 IS - 1 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107125479&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109875512 T1 - Adherence to hypertension management recommendations for patient follow-up care and lifestyle modifications made by military healthcare providers. AU - Collins TJ Y1 - 2000/01// N1 - Accession Number: 109875512. Language: English. Entry Date: 20020830. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Military Personnel -- United States KW - Hypertension -- Prevention and Control KW - Practice Guidelines -- Utilization KW - Patient Compliance KW - Life Style Changes KW - Neuman Systems Model KW - Descriptive Research KW - Record Review KW - Retrospective Design KW - Convenience Sample KW - United States Air Force KW - United States KW - Research, Military KW - Human SP - 91 p EP - 91 p JO - Adherence to Hypertension Management Recommendations for Patient Follow-up Care & Lifestyle Modifications Made by Military Healthcare Providers JF - Adherence to Hypertension Management Recommendations for Patient Follow-up Care & Lifestyle Modifications Made by Military Healthcare Providers PB - Uniformed Services University of the Health Sciences AB - The purpose of this study was to describe military healthcare providers' adherence to nationally recognized hypertensive patient guidelines concerning lifestyle modifications and follow-up instructions after an initial diagnosis of hypertension. The importance of monitoring high blood pressure (follow-up) and maintaining blood pressure control was examined. Research has shown that while hypertension follow-up is being performed, physicians are not following established guidelines aggressively enough in identifying situations in which more robust management may be appreciated. Neuman's Systems Model was used as the conceptual framework to guide this study. Data was collected utilizing a checklist developed by the researcher according to national treatment recommendations. Using a descriptive quantitative design, eight research questions were investigated during a retrospective chart review on a convenience sample of 35 medical records at an Air Force medical treatment facility located in the northeast United States. Military Healthcare Providers fared well (94%) in maintaining oversight of their hypertensive patients by providing excellent follow-up management. However, lifestyle modification prescriptions to their patients, were less favorable. There was a low compliance with weight loss instruction (36%), the limitation of alcohol use (57%), and need to increase physical activity (38%), reduce sodium intake (6%), and maintain adequate potassium (3%), calcium (9%), and magnesium (0%). Patients in this study were also not provided with adequate information about decreasing dietary fat (17%). However, Military Healthcare Providers were exceptional in both identifying and counseling cigarette smokers (100%). This thesis revealed a better compliance to JNC VI (1997) guidelines by Advanced Nurse Practitioners than physicians did in all areas of instructions. Advanced Nurse Practitioners lead the way for physicians in dietary instructions, weight loss instructions, and Health and Wellness Center referrals. AV - Order Info: Graduate and Nursing Dissertations at http://pac.lrc.usuhs.mil/ M1 - MSN AD - United States Air Force Nurse Corp UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109875512&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109875519 T1 - Air Force family nurse practitioner and Air Force family physician perception of the family nurse practitioner role in military operations other than war. AU - Houlihan S Y1 - 2000/01// N1 - Accession Number: 109875519. Language: English. Entry Date: 20020830. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Military Personnel KW - Family Nurse Practitioners KW - Professional Role KW - Military Deployment KW - Perception KW - United States Air Force KW - Physicians, Family KW - Conceptual Framework KW - Questionnaires KW - United States KW - Summated Rating Scaling KW - Comparative Studies KW - Attitude Measures KW - Research, Military KW - Human SP - 124 p EP - 124 p JO - Air Force Family Nurse Practitioner & Air Force Family Physician Perception of the Family Nurse Practitioner Role in Military Operations Other Than War JF - Air Force Family Nurse Practitioner & Air Force Family Physician Perception of the Family Nurse Practitioner Role in Military Operations Other Than War PB - Uniformed Services University of the Health Sciences AB - World events and defense requirements have forced the military paradigm to shift. The inevitable result is that the Family Nurse Practitioner (FNP) will take on a more active role in the deployed setting, especially in missions involving civilians with primary care needs as seen in Military Operations Other Than War (MOOTW). What is the perception of the FNP of their role in these missions? What is the perception of the Family Physician (FP) of the FNP role in these missions? Because of the collaborative role the FNP will have with the family physician it is important to compare these perceptions to assure quality collaborative care. Biddles Role theory will be the framework used using a questionnaire as a strategy for studying behavior roles. The purpose of this study will be to describe and compare the perceptions of the two provider groups and examine the differences and similarities for statistical significance. A 65-item survey utilizing a 5 point Likert-type scale in which the FNPs and FPs are requested to rate their perceptions of the ability of the FNP to treat a variety of patients will be used. The survey population will consist of all CONUS active duty Air Force FNPs practicing in the role of FNP, and CONUS active duty Air Force FPs currently or previously working with, an AF FNP. Data will be analyzed using descriptive and inferential statistics. SPSS will be used to analyze the quantitative data provided by the FNP/FP responses. Responses to open-ended questions will be analyzed through a content analysis. This analysis will determine if there are differences between the FP and FNP and provide insight on the perceived training needed to prepare the FNP for the deployment role. AV - Order Info: Graduate and Nursing Dissertations at http://pac.lrc.usuhs.mil/ M1 - MSN AD - United States Air Force Nurse Corp UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109875519&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Brenner, Carl N. T1 - Win. Lose, or Draw: Domestic Politics and the Crucible of War. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) J1 - Armed Forces & Society (0095327X) PY - 2000///Winter2000 Y1 - 2000///Winter2000 VL - 26 IS - 2 M3 - Book Review SP - 347 EP - 12 PB - Sage Publications Inc. SN - 0095327X AB - Reviews the book "Win, Lose, or Draw: Domestic Politics and the Crucible of War," by Allan C. Stam. KW - WIN, Lose or Draw: Domestic Politics & the Crucible of War (Book) KW - STAM, Allan C. KW - WAR KW - NONFICTION N1 - Accession Number: 2910511; Source Information: Winter2000, Vol. 26 Issue 2, p347; Subject Term: WIN, Lose or Draw: Domestic Politics & the Crucible of War (Book); Subject Term: STAM, Allan C.; Subject Term: WAR; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 4p; ; Document Type: Book Review; ; Full Text Word Count: 1130; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=2910511&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - THES ID - 109875510 T1 - Beliefs and practices of active duty Air Force males related to testicular cancer and testicular self-examinations. AU - Barnes RJ Y1 - 2000/01// N1 - Accession Number: 109875510. Language: English. Entry Date: 20020830. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Testicular Neoplasms -- Diagnosis KW - Testicular Self-Examination -- Evaluation KW - Active Duty Personnel KW - United States Air Force KW - Health Behavior KW - United States KW - Convenience Sample KW - Health Belief Model KW - Social Learning Theory KW - Descriptive Research KW - Research, Military KW - Adolescence KW - Adult KW - Male KW - Human SP - 72 p EP - 72 p JO - Beliefs & Practices of Active Duty Air Force Males Related to Testicular Cancer & Testicular Self-examinations JF - Beliefs & Practices of Active Duty Air Force Males Related to Testicular Cancer & Testicular Self-examinations PB - Uniformed Services University of the Health Sciences AB - Testicular cancer is the most common neoplasm found in men between the ages of 15 and 35, with an incidence that has nearly doubled over the last 20 years. Previous studies in the United States and Europe suggest that there is a limited awareness of testicular cancer and an even more limited practice of testicular self-examination. The purpose of this research was to investigate the beliefs and practices of active duty Air Force males related to testicular cancer and testicular self-examination. This study used a descriptive design to examine concepts from the health belief model and social cognitive theory that have been predictive of self-care and prevention behaviors. A nonrandom convenience sample of 100 men was taken from the active duty Air Force population assigned to a large Air Force facility in the eastern section of the United States. Data were collected using a Questionnaire adapted from Champion's tool measuring variables related to breast self-examination. The findings of this study revealed that an overwhelming number of men had never practiced testicular self-examination. The vast majority of participants also indicated that no specific barriers existed to impede its practice. AV - Order Info: See http://pac.lrc.usuhs.mil/search/a Listed as 'Typescript (photocopy) NOT available for circulation to other libraries' M1 - MSN AD - United States Air Force Nurse Corp UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109875510&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109875530 T1 - Chlamydia screening decision study. AU - Rogers J Y1 - 2000/01// N1 - Accession Number: 109875530. Language: English. Entry Date: 20020830. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Chlamydia Infections -- Diagnosis KW - Active Duty Personnel -- United States KW - Health Screening KW - Decision Making, Clinical KW - Qualitative Studies KW - Interviews KW - United States KW - Female KW - Human SP - 68 p EP - 68 p JO - Chlamydia Screening Decision Study JF - Chlamydia Screening Decision Study PB - Uniformed Services University of the Health Sciences AB - Chlamydia is a prevalent infection among the sexually active. Studies have shown that chlamydia is a health problem for military women. The United States' Center for Disease Control recommends screening asymptomatic women under the age of 25. Many studies show that screening asymptomatic young women uncovers significant numbers of infections. Other studies show that many young women are not being screened for this disease. This qualitative study investigates what factors influence providers' decisions to screen for chlamydia. A record review of 28 active duty women who received pelvic exams at a military health clinic for chlamydia screening and chlamydia prevalence was performed to enrich the interpretation of the data. Three healthcare providers who perform pelvic exams were interviewed. Data was analyzed guided by using Brooks' Theory of Intrapersonal Perceptual Awareness (BTIPA) for factors influencing their decisions to screen for chlamydia. The interviews were studiously reviewed for themes and compared to the themes of perception, judgment, and intrapersonal perceptual awareness in accordance with BTIPA. AV - Order Info: Graduate and Nursing Dissertations at http://pac.lrc.usuhs.mil/ M1 - MSN AD - United States Air Force Nurse Corp UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109875530&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109875516 T1 - The effects of morphine sulfate on agglutination, clot formation, and hemolysis in packed red blood cells. AU - Estavillo B Y1 - 2000/01// N1 - Accession Number: 109875516. Language: English. Entry Date: 20020830. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Blood Component Transfusion KW - Morphine KW - Erythrocytes KW - In Vitro Studies KW - Blood Coagulation -- Evaluation KW - Hemolysis -- Evaluation KW - Human SP - 56 p EP - 56 p JO - Effects of Morphine Sulfate on Agglutination, Clot Formation & Hemolysis in Packed Red Blood Cells JF - Effects of Morphine Sulfate on Agglutination, Clot Formation & Hemolysis in Packed Red Blood Cells PB - Uniformed Services University of the Health Sciences AB - Morphine sulfate is an opium alkaloid narcotic frequently used on patients suffering from acute and chronic disease processes. Often patients receiving either acute or long-term pain therapy with morphine require concomitant blood transfusion therapy. Based on current American Association of Blood Banks guidelines the addition of any medication other than normal saline to packed red blood cells is strictly prohibited. This restriction can lead to unwanted delays in medication schemes when patients with limited intravenous access are in need of both therapies at the same time. Few studies exist that have investigated the effects of morphine sulfate on packed red blood cells. Most of these have, in a limited manner, presented contrasting evidence on the efficacy of this practice. The aim of this study was to measure the in-vitro effects of morphine sulfate on packed red blood cells, while imitating the modern clinical infusion system. The effects of morphine sulfate on packed red blood cells was studied by measuring clot formation, agglutination, and hemolysis using relative semi-quantitative visual assay. Morphine sulfate did not cause time or temperature dependent clot formation or agglutination in the samples studied. This may be due to the fact that clotting was not possible due to removal of clotting factors during processing of the PRBCs. Grossly evident hemolysis occurred in both the control and test groups, most likely due to secondary sources. Findings from this study do not support compatibility between Morphine sulfate and packed red blood cells. Recommendations for practice remain in accord with current practice standards. AV - Order Info: See http://pac.lrc.usuhs.mil/search/a Listed as 'Typescript (photocopy) NOT available for circulation to other libraries' M1 - MSN AD - United States Air Force Nurse Corp UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109875516&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - CHAP ID - 2004-12755-024 AN - 2004-12755-024 AU - Wilson, Glenn F. ED - Kazdin, Alan E. ED - Kazdin, Alan E., (Ed) T1 - Aerospace systems. T2 - Encyclopedia of psychology, Vol. 1. Y1 - 2000/// SP - 85 EP - 86 CY - Washington, DC, US; New York, NY, US PB - American Psychological Association PB - Oxford University Press SN - 1-55798-650-9 N1 - Accession Number: 2004-12755-024. Partial author list: First Author & Affiliation: Wilson, Glenn F.; Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, US. Release Date: 20040101. Correction Date: 20170227. Publication Type: Encyclopedia (0300). Format Covered: Print. Document Type: Encyclopedia Entry. Book Type: Reference Book. ISBN: 1-55798-650-9, Hardcover. Language: English. Major Descriptor: Astronauts. Classification: Human Factors Engineering (4010). Intended Audience: Psychology: Professional & Research (PS). Page Count: 2. AB - Discusses the problems and developments related to the protection of astronauts in the inhospitable environment of space. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - astronauts KW - 2000 KW - Astronauts KW - 2000 DO - 10.1037/10516-024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2004-12755-024&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - THES ID - 109875522 T1 - Ethical issues of Air Force nurse practitioners in clinical practice. AU - Gilchrist CL Y1 - 2000/01// N1 - Accession Number: 109875522. Language: English. Entry Date: 20020830. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - United States Air Force KW - Nurse Practitioners KW - Decision Making, Ethical KW - Qualitative Studies KW - Narratives KW - United States KW - Research, Military KW - Human SP - 60 p EP - 60 p JO - Ethical Issues of Air Force Nurse Practitioners in Clinical Practice JF - Ethical Issues of Air Force Nurse Practitioners in Clinical Practice PB - Uniformed Services University of the Health Sciences AB - What are the ethical issues or situations Air Force Nurse Practitioners (AFNPs) experience in clinical practice? Which moral or ethical principles are reflected? Little has been written about the ethical issues faced by AFNPs in clinical practice. The description and exploration of these issues was accomplished in this study through the use of qualitative research methodology. Seven active duty AFNPs provided narrative accounts of ethical issues and situations encountered in their clinical practice. The individual narratives were analyzed and findings were presented using four basic principles of biomedical ethics: respect for autonomy, nonmaleficence, beneficence, and justice. Implications of this study illustrate the need for some type of ethics education in advanced practice nursing curricula. Further implications for use in clinical practice include time management, resource utilization, template creation, and training. More research is needed to determine if the experiences of AFNPs are universal to the profession of advanced practice nursing. Patient and healthcare provider satisfaction, and retention of personnel in military service may all be impacted by further research in ethical issues in clinical practice. AV - Order Info: Graduate and Nursing Dissertations at http://pac.lrc.usuhs.mil/ M1 - MSN AD - United States Air Force Nurse Corp UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109875522&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109875518 T1 - Experience of military nurse practitioners during their first year of practice. AU - Bosch JM Y1 - 2000/01// N1 - Accession Number: 109875518. Language: English. Entry Date: 20020830. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Life Experiences KW - Military Personnel KW - Nurse Practitioners KW - Military Nursing KW - Phenomenological Research KW - Purposive Sample KW - Interviews KW - Research, Military KW - Human SP - 88 p EP - 88 p JO - Experience of Military Nurse Practitioners During Their First Year of Practice JF - Experience of Military Nurse Practitioners During Their First Year of Practice PB - Uniformed Services University of the Health Sciences AB - The lived experience of military nurse practitioners during their first year of clinical experience was explored using a phenomenological approach. The purpose of the study was to explore and describe the experience of the military nurse practitioner during the first year of practice. Purposive sampling of 6 military advanced practice nurses (APNs) was used. Data was generated using open-ended core questions and in-depth face-to-face interviews. Data analysis incorporated the qualitative methods of Marshall and Rossman and Scannel-Desch. Seven theme categories and fifteen theme clusters emerged from the data collected. The theme categories were: nurse practitioner role issues, it's more than they bargained for, control issues, stress and challenges, preceptor stories, patients and practice, and looking toward the future. The data was related to Van Manen's four existential themes. This study is significant to military nursing because very few studies focused on the experience of military nurse practitioners. In addition, transitions have been identified as one of the key concepts central to the discipline of nursing. Recommendations for further study include examining the specific role of the Family Nurse Practitioner, studying the NP role from a physician's perspective, and including Navy NPs in future studies. AV - Order Info: Graduate and Nursing Dissertations at http://pac.lrc.usuhs.mil/ M1 - MSN AD - United States Air Force Nurse Corp UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109875518&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109875527 T1 - The influence of verapamil and nicardipine on the rate of metabolism of midazolam. AU - Lowe G Y1 - 2000/01// N1 - Accession Number: 109875527. Language: English. Entry Date: 20020830. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Midazolam -- Metabolism KW - Verapamil -- Pharmacodynamics KW - Calcium Channel Blockers -- Pharmacodynamics KW - In Vitro Studies KW - Basic Research KW - Regression KW - Human SP - 45 p EP - 45 p JO - Influence of Verapamil & Nicardipine on the Rate of Metabolism of Midazolam JF - Influence of Verapamil & Nicardipine on the Rate of Metabolism of Midazolam PB - Uniformed Services University of the Health Sciences AB - Certified Registered Nurse Anesthetists administer numerous drugs to surgical patients who may be on a wide and varied pharmacological regimen. It is important that the nurse anesthetist be aware of potential drug-drug interactions. The purpose of this study is to assess the in vitro metabolic reactions of midazolam in the presence of the calcium channel blockers verapamil and nicardipine in hepatic microsomes from three different human livers. Midazolam a widely used premedicant in anesthesia, and the calcium channel blockers verapamil and nicardipine are all metabolized by the cytochrome P450 3A4 subfamily of liver microsomal enzymes. Recent clinical observations and experimental studies suggest that midazolam's effects can be augmented by microsomal inhibition when drugs compete for the same family of metabolizing enzymes. In this study the metabolism of midazolam's major metabolite alpha hydroxymidazolam was measured in the presence of differing concentrations of calcium channel blockers using human liver microsomes. Data were analyzed using regression analysis to determine the percent of inhibition and metabolism and Lineweaver-Burk plots were used to determine the inhibition constant (Ki). The mean Ki for nicardipine was 1.35 and 29.3 for verapamil. Nicardipine was the stronger inhibitor of the two calcium channel blockers. Midazolam's effects in the presence of nicardipine and verapamil may be augmented or prolonged. AV - Order Info: Graduate and Nursing Dissertations at http://pac.lrc.usuhs.mil/ M1 - MSN AD - United States Air Force Nurse Corp UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109875527&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109875515 T1 - Nurse practitioners' experience with herbal therapy. AU - Garner VA Y1 - 2000/01// N1 - Accession Number: 109875515. Language: English. Entry Date: 20020830. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Nurse Practitioners KW - Medicine, Herbal KW - United States Air Force KW - Plants, Medicinal -- Therapeutic Use KW - Grounded Theory KW - Qualitative Studies KW - United States KW - Research, Military KW - Human SP - 78 p EP - 78 p JO - Nurse Practitioners' Experience With Herbal Therapy JF - Nurse Practitioners' Experience With Herbal Therapy PB - Uniformed Services University of the Health Sciences AB - Use of herbal therapy has dramatically risen in the last decade. Advertisement and access to these supplements has also grown. Patient use, benefits, and potential adverse effects of herbal therapy have been well documented in the literature, but provider response to this phenomenon has not been well documented. The purpose of this study was to explore and describe nurse practitioners' experience with herbal therapy. Grounded theory methodology, a qualitative research approach, guided the research process. A purposeful sample of 8 Air Force nurse practitioners was interviewed. Data collection and analysis occurred simultaneously using coding and categorization until saturation had been established and a core variable emerged. Results identified nine theme categories related to knowledge, safety, validity and effectiveness, responsibility, time, cost, complementary vs. Western medicine, patient/provider relationship, and prescribing vs. recommending. Knowledge of herbal therapy and the acquisition thereof emerged as the core variable in this study. Knowledge influenced how much herbal therapy was incorporated into practice, which contributed to overall experience. As experience expanded, this further contributed to the body of knowledge on herbal therapy. As more and more patients use herbs to attain or maintain a state of well-being, this study highlights the need for nurse practitioners to remain current and focus on knowledge acquisition regarding herbal therapy. AV - Order Info: Graduate and Nursing Dissertations at http://pac.lrc.usuhs.mil/ M1 - MSN AD - United States Air Force Nurse Corp UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109875515&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109875517 T1 - Preanesthetic assessment of herbal and dietary supplement use. AU - Effertz PM Y1 - 2000/01// N1 - Accession Number: 109875517. Language: English. Entry Date: 20020830. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Nurse Anesthetists KW - Nursing Assessment KW - Plants, Medicinal -- Therapeutic Use KW - Dietary Supplementation -- Evaluation KW - Evaluation KW - Surgical Patients KW - United States Air Force KW - Descriptive Research KW - Questionnaires KW - Convenience Sample KW - Drug-Food Interactions KW - Research, Military KW - United States KW - Human SP - 80 p EP - 80 p JO - Preanesthetic Assessment of Herbal & Dietary Supplement Use JF - Preanesthetic Assessment of Herbal & Dietary Supplement Use PB - Uniformed Services University of the Health Sciences AB - The use of unregulated herbal and dietary supplements in the United States is steadily increasing, and anesthesia providers are becoming increasingly concerned about the potential for adverse drug reactions. Anesthesia providers' knowledge regarding the use of supplements and their potential interaction with anesthetics is largely unreported in the literature. This descriptive, two-phased study examined current practice of United States Air Force (USAF) Certified Registered Nurse Anesthetists (CRNA) regarding herbal and dietary supplements in the preanesthetic medication assessment and the use of herbal and dietary supplements by patients undergoing anesthesia in a USAF medical center. In phase-I, a convenience sample of 220 USAF CRNAs was surveyed using a seven-item questionnaire. Of 126 USAF CRNA respondents, 58% reported asking their patients about supplement use. Eighty-five percent of all respondents reported that this issue is an important part of the preanesthetic assessment. Fifty-three percent of respondents commonly recommend discontinuing supplement use at least 48 hours prior to surgery, while 47% of respondents do not make recommendations. Twelve percent of respondents reported that they have suspected an anesthesia-supplement reaction, most commonly, coagulation problems or sympathetic nervous system alterations. In phase-II of the study, 86 patients presenting to the preanesthetic clinic at an USAF medical center were asked about herbal and dietary supplement use. Twelve percent reported taking herbal supplements and 24% reported dietary supplement use. AV - Order Info: Graduate and Nursing Dissertations at http://pac.lrc.usuhs.mil/ M1 - MSN AD - United States Air Force Nurse Corp UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109875517&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109875525 T1 - Prevalence of visible and occult blood on the surfaces of fiberoptic bronchoscopes. AU - McKamey JW Y1 - 2000/01// N1 - Accession Number: 109875525. Language: English. Entry Date: 20020830. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Occult Blood KW - Bronchoscopy -- Equipment and Supplies KW - Clinical Research KW - Human SP - 59 p EP - 59 p JO - Prevalence of Visible & Occult Blood on the Surfaces of Fiberoptic Bronchoscopes JF - Prevalence of Visible & Occult Blood on the Surfaces of Fiberoptic Bronchoscopes PB - Uniformed Services University of the Health Sciences AB - Previous studies have demonstrated visible and/or occult blood on operating room equipment such as laryngoscope blades, blood pressure cuffs, anesthesia control knobs and pulse oximetry probes identified as ready for use. Anesthesia providers are in close contact with many or all of the equipment noted and have a responsibility to ensure proper cleaning is occurring to prevent transmission of blood-borne pathogens. This study was conducted to determine if current cleaning, disinfection and sterilization procedures used at one medical center was adequate to remove visible and occult blood from fiberoptic bronchoscopes. Data were collected on 27 bronchoscopes from a major medical center and each flexible shaft, distal tip and biopsy channel was tested. These samples were subjected to a visible inspection and a modified Phenolphthalein DISCHAPT test to determine the presence or absence of occult blood. This test detects the presence of blood via an oxidation-reduction reaction. If hemoglobin is present, the hydrogen peroxide releases an oxygen to phenolphthalein resulting in a color change (bright pink). None of the fiberoptic bronchoscopes used for this study tested positive for visible or occult blood. Fiberoptic bronchoscopes must undergo high-level disinfection. This includes removing all organic debris before exposing the bronchoscope to chemical agents followed by either manual (gastroenterology clinic) or mechanical (operating room) disinfection with appropriate agents. It appears that these guidelines are adequate for removing blood from fiberoptic bronchoscopes and the medical center chosen adheres to these guidelines. AV - Order Info: Graduate and Nursing Dissertations at http://pac.lrc.usuhs.mil/ M1 - MSN AD - United States Air Force Nurse Corp UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109875525&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109875536 T1 - The role of certified registered nurse anesthetists in patient education. AU - Spradlin H Y1 - 2000/01// N1 - Accession Number: 109875536. Language: English. Entry Date: 20020830. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Nurse Anesthetists KW - Professional Role -- Evaluation KW - Patient Education KW - United States Air Force KW - Descriptive Research KW - Questionnaires KW - Data Analysis Software KW - Military Personnel KW - United States KW - Human SP - 46 p EP - 46 p JO - Role of Certified Registered Nurse Anesthetists in Patient Education JF - Role of Certified Registered Nurse Anesthetists in Patient Education PB - Uniformed Services University of the Health Sciences AB - As advanced practice nurses, certified registered nurse anesthetists (CRNAs) have a responsibility to engage in patient education about health related issues. This is accomplished in a variety of ways, including perioperative patient teaching and health care promotion. In this study, the extent to which patient educational activities are engaged in by CRNAs was examined.A descriptive survey of United States Air Force CRNAs (n=84) was conducted. A questionnaire was mailed to each CRNA along with a letter explaining the purpose of the study. Data were collected and analyzed utilizing the Statistical Package for the Social Sciences and content analysis.Fifty percent of the USAF CRNAs who participated in this study have been practicing for fewer than five years. Fifty-eight percent of the respondents work in a medical treatment facility that provides an anesthesia program for anesthesia. Categories and themes include; engaging in perioperative patient education, focusing on explanations about anesthesia and surgery, prior nursing experiences make patient education easier, documenting patient education is important and uncertainty about where to document it.Common topics and themes are discussed. These include; timing of teaching, expectations from the patient and CRNA, choices available to the patient, and topics of teaching. AV - Order Info: Graduate and Nursing Dissertations at http://pac.lrc.usuhs.mil/ M1 - MSN AD - United States Air Force Nurse Corp UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109875536&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109875511 T1 - Testing proposed national guidelines for perioperative normothermia. AU - Casassola F Y1 - 2000/01// N1 - Accession Number: 109875511. Language: English. Entry Date: 20020830. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Body Temperature Regulation -- Standards KW - Practice Guidelines -- Evaluation KW - Perioperative Care KW - Hypothermia -- Prevention and Control KW - Anesthesia -- Adverse Effects KW - Body Temperature Determination KW - Record Review KW - Human SP - 75 p EP - 75 p JO - Testing Proposed National Guidelines for Perioperative Normothermia JF - Testing Proposed National Guidelines for Perioperative Normothermia PB - Uniformed Services University of the Health Sciences AB - Unintentional perioperative hypothermia is an unwanted but common occurrence during anesthesia. A national multidisciplinary panel developed National Perioperative Thermoregulation Guidelines (NPTG) directed at maintaining patient normothermia perioperatively by identifying pre-operative risk factors, and instituting active warming measures early. The purpose of the study was to pilot test the proposed guidelines to identify barriers to implementation, and suggestions for improvement. Data were collected by perioperative health care providers in the ambulatory surgery unit(ASU), operating rooms (OR), and post-anesthesia care unit (PACU) for all scheduled surgeries over a period of two weeks. The sample consisted of 98% (n=115) of patients undergoing surgery. The ASU reported on 55 patients(48%), the OR 92 patients(80%), and the PACU 90 patients (78%). Twenty-four percent(n=13) of preoperative patients were found to be hypothermic in the ASU before surgery. Seventy-one percent of patients did not have a temperature recorded postoperatively in the ASU prior discharge, and of those recorded 29%(n=16), one-half were discharged from ASU hypothermic. Thirty-three percent(n=30) of patients arrived in the PACU hypothermic from the OR, and 50%(n=15) of these patients were discharged from the PACU hypothermic. ASU, OR, and PACU staff reported that the NPTG were not difficult to follow, yet apparently NPTG were not implemented or followed. No barriers to implementation were identified by ASU or PACU staff. OR staff identified four barriers to implementation, and one suggestion for improvement to NPTG. AV - Order Info: Graduate and Nursing Dissertations at http://pac.lrc.usuhs.mil/ M1 - MSN AD - United States Air Force Nurse Corp UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109875511&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Abadi, Jacob TI - The road to the Israeli-Moroccan rapprochement JO - The Journal of North African Studies PY - 2000/01/01/ VL - 5 IS - 1 SP - [27] EP - 54; PB - Taylor & Francis Group SN - 13629387 N1 - Database Contributor: AFRICAN STUDIES CENTRE LEIDEN THE NETHERLANDS; NATURAL & CULTURAL HERITAGE OF AFRICA NATCHA; AFRICAN DEVELOPMENT DATABASE; COMPOSITE RECORD. Database Contributor ID: LEIDEN-236334425; NATCHA-967879; 967879. Database Subset: AFRICAN STUDIES. Language: English. Document Type: Article. Publication Type: Journal Article; Article. Place of Publication: 4 Park Sq, Milton Park, Abingdon OX14 4RN United Kingdom. Accession Number: LEIDEN-236334425. Author Affiliation: [2000] - United States Air Force Academy, USA 1; Locations: AFRIKA article. AB - NATCHA Abstract: Morocco's relations with Israel are noted for their moderation and cordiality. With the exception of former Tunisia's President Habib Bourguiba, who called upon the Arab states to come to terms with Israel, King Hassan II was the only Arab head of state that favoured negotiations with the Jewish State. But unlike any other leader in the region, he agreed to meet Israeli leaders in an attempt to find a solution to the Arab-Israeli conflict. Observers and commentators on Middle Eastern affairs had often argued that Arab countries, which do not share common borders with Israel, tend to be hostile, because they have little to lose by doing so. As a country situated far from the focus of the Arab-Israeli conflict, Morocco was an exception to this rule. What were the reasons for such a conciliatory attitude on Morocco's part and why did Hassan decide to embark on such a dangerous course of action, which exposed him to intense criticism from the Arab world, are some of the questions, which this essay attempts to answer. This essay argues that Morocco's conciliatory attitude was a by-product of both domestic and external constraints, which were not dealt with in adequate depth in the preliminary studies written on this topic, and which profoundly altered Morocco's policy toward Israel KW - History KW - Politics KW - Israel KW - Morocco KW - Africa KW - Asia KW - History KW - Politics KW - Israel KW - Morocco KW - Africa KW - Asia KW - foreign policy KW - arab israeli conflict KW - arab states KW - arab world KW - common borders KW - conciliation procedures KW - conciliatory attitudes KW - cordiality KW - domestic constraints KW - government policies KW - hostile nations KW - hostile policies KW - international constraints KW - international hostilities KW - international relations KW - jewish state KW - king hassan ii KW - moderate relations KW - peace negotiations KW - peace talks KW - rapprochement UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=awn&AN=LEIDEN-236334425&site=ehost-live&scope=site DP - EBSCOhost DB - awn ER - TY - THES ID - 109875532 T1 - Work-related issues facing nurse anesthetists during military operations other than war. AU - Majma B Y1 - 2000/01// N1 - Accession Number: 109875532. Language: English. Entry Date: 20020830. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Nurse Anesthetists KW - Military Personnel KW - Active Duty Personnel KW - Military Deployment KW - Grounded Theory KW - Snowball Sample KW - Interviews KW - Questionnaires KW - Constant Comparative Method KW - Human SP - 83 p EP - 83 p JO - Work-related Issues Facing Nurse Anesthetists During Military Operations Other Than War JF - Work-related Issues Facing Nurse Anesthetists During Military Operations Other Than War PB - Uniformed Services University of the Health Sciences AB - The purpose of this research was to describe the work-related issues facing nurse anesthetists deployed on a military operation other than war (MOOTW), and to identify strategies for improvement to formal education and training programs. Currently there is an absence of literature about the role of nurse anesthetists during a MOOTW. The study is important to the military because nurse officers will continue to be deployed not only as anesthetists, but also as leaders on humanitarian, disaster relief, and peacekeeping or peacemaking missions; which are all components of MOOTW missions. It is equally important to nurse anesthetists because they are integral to providing anesthesia and pain management to soldiers and civilians in the perioperative period. Grounded theory methods were used in this study to answer the research questions and to develop new theory. Purposive sampling with a snowball technique was used to obtain participants who had been on a MOOTW during the last five years. Data collection was done through interviews and demographic questionnaires. Analysis of interview data, using the constant comparative method, was done manually. Nine themes were extracted from the data: Communication, flexibility, environment, equipment, cultural issues, personal issues, non-anesthesia roles, training, and recommendations for future deployments. AV - Order Info: Graduate and Nursing Dissertations at http://pac.lrc.usuhs.mil/ M1 - MSN AD - United States Air Force Nurse Corp UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109875532&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2000-00475-002 AN - 2000-00475-002 AU - Staal, Mark A. AU - Cigrang, Jeff A. AU - Fiedler, Edna T1 - Disposition decisions in U.S. Air Force basic trainees assessed during mental health evaluations. JF - Military Psychology JO - Military Psychology JA - Mil Psychol Y1 - 2000/// VL - 12 IS - 3 SP - 187 EP - 203 CY - US PB - Lawrence Erlbaum SN - 0899-5605 SN - 1532-7876 N1 - Accession Number: 2000-00475-002. Partial author list: First Author & Affiliation: Staal, Mark A.; United States Air Force Academy, Dept of Behavioral Sciences & Leadership, CO, US. Other Publishers: Educational Publishing Foundation; Taylor & Francis. Release Date: 20000830. Correction Date: 20140818. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Clinical Judgment (Not Diagnosis); Mental Disorders. Minor Descriptor: Mental Health. Classification: Psychological Disorders (3210); Military Psychology (3800). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. References Available: Y. Page Count: 17. Issue Publication Date: 2000. AB - Previous research suggests that social maladjustment, depression, and emotional instability are significant risk factors in failure to adopt to the military training environment. This study developed profiles of 4 trainee disposition groups that distinguished trainees needing hospitalization due to emotional instability, those requiring immediate separation from the Air Force but did not need hospitalization, those who required administrative separation from the Air Force but did not necessitate immediate care or removal, and those who were typically returned to duty although temporarily distressed. The 1048 Ss (mean age 20.05 yrs) selected for this study were basic trainees at the Behavioral Analysis Service (BAS) in Lackland Air Force Base. The data used for the analysis were from psychological testing, self-report questionnaires, and clinical interview information routinely obtained during the standard evaluation process for basic trainees at the BAS. Data from the evaluation process were analyzed by discriminant analysis. Eight variables that contributed to classification decisions in 86% to 90% of trainees were identified. Several key variables that were believed to be influential in the decision-making process were revealed to be noncontributory to classification. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - assessment of dispositions during mental health evaluations KW - US Air Force basic trainees KW - 2000 KW - Air Force Personnel KW - Clinical Judgment (Not Diagnosis) KW - Mental Disorders KW - Mental Health KW - 2000 DO - 10.1207/S15327876MP1203_2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2000-00475-002&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - UNPB AU - Garratt, Rod AU - Qin, Cheng-Zhong AU - Parco, James E. AU - Rapoport, Amnon AD - Department Economics, University of California AD - Department Economics, University of California AD - Department of Management, United States Air Force Academy AD - Department of Management and Policy, University of Arizona T1 - Potential Maximization and Coalition Government Formation PB - Fondazione Eni Enrico Mattei, Working Papers: 2004.82 Y1 - 2000/// AV - Availability Note: Information provided in collaboration with the RePEc Project: http://repec.org N1 - Accession Number: 0740531; Keywords: Coalition formation, Potential maximization, Nash equilibrium refinements, Experimental study, Minimal winning; Publication Type: Working Paper; Update Code: 200408 N2 - A model of coalition government formation is presented in which inefficient, non-minimal winning coalitions may form in Nash equilibrium. Predictions for five games are presented and tested experimentally. The experimental data support potential maximization as a refinement of Nash equilibrium. In particular, the data support the prediction that non-minimal winning coalitions occur when the distance between policy positions of the parties is small relative to the value of forming the government. These conditions hold in games 1, 3, 4 and 5, where subjects played their unique potential-maximizing strategies 91, 52, 82 and 84 percent of the time, respectively. In the remaining game (Game 2) experimental data support the prediction of a minimal winning coalition. Players A and B played their unique potential-maximizing strategies 84 and 86 percent of the time, respectively, and the predicted minimal-winning government formed 92 percent of the time (all strategy choices for player C conform with potential maximization in Game 2). In Games 1, 2, 4 and 5 over 98 percent of the observed Nash equilibrium outcomes were those predicted by potential maximization. Other solution concepts including iterated elimination of dominated strategies and strong/coalition proof Nash equilibrium are also tested. KW - Noncooperative Games C72 KW - Bargaining Theory; Matching Theory C78 KW - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior D72 L3 - http://www.feem.it/NR/rdonlyres/C6840FBA-424F-4CAA-8488-EB31C5963340/1169/8204.pdf UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0740531&site=ehost-live&scope=site UR - http://www.feem.it/NR/rdonlyres/C6840FBA-424F-4CAA-8488-EB31C5963340/1169/8204.pdf DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 107102077 T1 - Dopamine and the origins of human intelligence. AU - Previc FH Y1 - 1999/12//1999 Dec N1 - Accession Number: 107102077. Language: English. Entry Date: 20000401. Revision Date: 20150711. Publication Type: Journal Article; review; tables/charts. Journal Subset: Biomedical; Double Blind Peer Reviewed; Peer Reviewed; USA. NLM UID: 8218014. KW - Intelligence KW - Primates KW - Cognition KW - Dopamine -- Physiology KW - Problem Solving KW - Motor Activity -- Physiology KW - Memory KW - Central Nervous System -- Physiology KW - Body Temperature Regulation -- Physiology KW - Animals SP - 299 EP - 350 JO - Brain & Cognition JF - Brain & Cognition JA - BRAIN COGNIT VL - 41 IS - 3 CY - Burlington, Massachusetts PB - Academic Press Inc. SN - 0278-2626 AD - Flight Motion Effects Branch, Flight Stress Protection Division, Human Effectiveness Directorate, Air Force Research Laboratory, Brooks Air Force Base, Texas U2 - PMID: 10585240. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107102077&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Post, David L. AU - Geiselman, Eric E. AU - Post, DL AU - Geiselman, EE AU - Goodyear, CD T1 - Benefits of color coding weapons symbology for an airborne helmet-mounted display. JO - Human Factors JF - Human Factors Y1 - 1999/12// VL - 41 IS - 4 M3 - journal article SP - 515 EP - 523 SN - 00187208 AB - We assessed the advantages of a color-coded weapons symbology for a helmet-mounted display over monochrome symbology by measuring military pilots' performance while they flew air-to-air combat in a simulator. The pilots fired missiles significantly sooner without sacrificing probability of kill when using the color-coded symbology, demonstrating a substantial practical benefit of color. Actual or potential applications of this work include the design of color codes for helmet-mounted and other displays that use complex symbology to assist performance on cognitively challenging tasks. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Automation KW - Head-up displays KW - Air pilots KW - Flight simulators N1 - Accession Number: 3042410; Post, David L.; Geiselman, Eric E.; Post, DL 1; Geiselman, EE; Goodyear, CD; Affiliations: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7022, USA; Issue Info: Dec1999, Vol. 41 Issue 4, p515; Thesaurus Term: Automation; Subject Term: Head-up displays; Subject Term: Air pilots; Subject Term: Flight simulators; Number of Pages: 9p; Illustrations: 1 Diagram, 4 Graphs; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=3042410&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Dunlap Jr., Charles J. T1 - THE POLICE-IZATION OF THE MILITARY. JO - Journal of Political & Military Sociology JF - Journal of Political & Military Sociology J1 - Journal of Political & Military Sociology PY - 1999///Winter99 Y1 - 1999///Winter99 VL - 27 IS - 2 M3 - Article SP - 217 SN - 00472697 AB - This article analyzes the background of the use of the armed forces in a police capacity, discuss the growth of that role in the 1980s and 1990s and forecast an even greater expansion into that role in the near future due to the emerging threat of terrorism in the U.S. The article contends that the increased reliance on military resources for policing is not in the interest of either the armed forces or the public. Finally, the article makes some observations with a view towards minimizing the dangers of "police-ization" of the military while ensuring public safety in the U.S. One important step in setting the right course for the future would be establishing a clear definition of the kinds of threats manifesting a true national security threat and those which present a law enforcement problem recognizing, of course, that overlap can occur from time to time. The nature of threat posed by terrorism, if characterized as a national security risk, carries great potential to force that next step. No one should suffer the illusion that military forces could ever execute the laws with the same sensitivity to civil liberties as regular police forces. KW - MILITARY police KW - UNITED States -- Armed Forces KW - TERRORISM -- United States KW - NATIONAL security -- United States KW - LAW enforcement KW - UNITED States N1 - Accession Number: 2977487; Source Information: Winter99, Vol. 27 Issue 2, p217; Subject Term: MILITARY police; Subject Term: UNITED States -- Armed Forces; Subject Term: TERRORISM -- United States; Subject Term: NATIONAL security -- United States; Subject Term: LAW enforcement; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 16p; ; Document Type: Article; ; Full Text Word Count: 5887; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=2977487&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Sawyer, John E. AU - Latham, William R. AU - Pritchard, Robert D. AU - Bennett Jr., Winston R. T1 - ANALYSIS OF WORK GROUP PRODUCTIVITY IN AN APPLIED SETTING: APPLICATION OF A TIME SERIES PANEL DESIGN. JO - Personnel Psychology JF - Personnel Psychology Y1 - 1999///Winter99 VL - 52 IS - 4 M3 - Article SP - 927 EP - 967 PB - Wiley-Blackwell SN - 00315826 AB - We provide a demonstration of a time series panel analysis applied under typical field research conditions characterized by (a) a small number of groups (b) all of which experience an intervention (thus there is no traditional control group), and (c) perform noncomparable tasks. The time series techniques allow a direct test of Naylor, Pritchard, and Ilgen's (1980) theory of behavior in organizations applied to work group productivity in a large-scale study of work groups conducted by Pritchard and colleagues (1989). The responses of 5 work groups to priority scores for 37 indicators of productivity over 23 months were used to predict month-by-month changes in productivity for each of the 37 group products. The results show that group productivity improvements can be explained by feedback including priority scores derived from nonlinear contingency functions of the productivity indicators. Furthermore, groups differed in their response to priority feedback. Goal setting positively affected productivity gain consistently across work groups, after the effects of priority feedback and the interaction of work groups with priority feedback were accounted for. Implications for group performance strategies and appropriate applications of the time series panel analysis are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Personnel Psychology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - TEAMS in the workplace KW - LABOR productivity KW - ORGANIZATIONAL behavior KW - ASSOCIATIONS, institutions, etc. KW - WORK KW - LABOR KW - GROUP work in research KW - PANEL analysis KW - BEHAVIOR KW - PERFORMANCE N1 - Accession Number: 2635350; Sawyer, John E. 1; Email Address: sawyerj@be.udel.edu; Latham, William R. 2; Pritchard, Robert D. 3; Bennett Jr., Winston R. 4; Affiliations: 1: Department of Business Administration, University of Delaware; 2: Department of Economics, University of Delaware; 3: Texas A&M University; 4: United States Air Force Research Laboratory, Warfighter Training Research Division, Mesa, Arizona; Issue Info: Winter99, Vol. 52 Issue 4, p927; Thesaurus Term: RESEARCH; Thesaurus Term: TEAMS in the workplace; Thesaurus Term: LABOR productivity; Thesaurus Term: ORGANIZATIONAL behavior; Thesaurus Term: ASSOCIATIONS, institutions, etc.; Thesaurus Term: WORK; Thesaurus Term: LABOR; Thesaurus Term: GROUP work in research; Subject Term: PANEL analysis; Subject Term: BEHAVIOR; Subject Term: PERFORMANCE; NAICS/Industry Codes: 813990 Other Similar Organizations (except Business, Professional, Labor, and Political Organizations); Number of Pages: 41p; Illustrations: 9 Charts, 2 Graphs; Document Type: Article; Full Text Word Count: 15155 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=2635350&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 107086407 T1 - Femoropopliteal bypass graft. AU - Zelinskas EJ Y1 - 1999/12//1999 Dec N1 - Accession Number: 107086407. Language: English. Entry Date: 20000201. Revision Date: 20150819. Publication Type: Journal Article; CEU; exam questions; pictorial; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 7907517. KW - Peripheral Vascular Diseases -- Surgery KW - Arteriosclerosis -- Surgery KW - Vascular Surgery -- Methods KW - Popliteal Artery -- Surgery KW - Femoral Artery -- Surgery KW - Grafts KW - Education, Continuing (Credit) KW - Arteriosclerosis -- Physiopathology KW - Arteriosclerosis -- Diagnosis KW - Peripheral Vascular Diseases -- Diagnosis KW - Saphenous Vein -- Transplantation KW - Autografts SP - 8 EP - 16 JO - Surgical Technologist JF - Surgical Technologist JA - SURG TECHNOL VL - 31 IS - 12 CY - Englewood, Colorado PB - Association of Surgical Technologists, Inc. SN - 0164-4238 AD - United States Air Force, Dover, Delaware UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107086407&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Zorn, Wayne L. AU - Deckro, Richard F. AU - Lehmkuhl, Lee J. T1 - Modeling diminishing marginal returns in a hierarchical inventory system of reparable spare parts. JO - Annals of Operations Research JF - Annals of Operations Research Y1 - 1999/11// VL - 91 IS - 1-4 M3 - Article SP - 319 EP - 337 SN - 02545330 AB - Safety stock levels of reparable spare parts in a hierarchical inventory structure are determined relative to the marginal improvement to end item availability provided by each stock level. This research is focused on the United States Air Force (USAF) hierarchical inventory and repair system as modeled by the Multi-Echelon-Technique-for-Recoverable-Item-Control (METRIC) methodology. A piecewise linear modeling framework is introduced based on output from the Aircraft Availability Model (AAM), a model that is part of the METRIC family of models. The underlying nature of the piecewise linear formulation provides integer stock levels with continuous decision variables. This model provides the highest attainable end-item availability relative to an inventory of reparable spare parts. Additionally, the model provides a robust platform for the conduct of extensive post-optimality analysis. While this research focuses on the METRIC family of models, the methodology developed may be applied to any hierarchical inventory of reparable spares that conforms to the model's underlying mathematical structure. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of Operations Research is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INVENTORIES KW - STOCKS (Finance) KW - MATHEMATICAL models KW - OPERATIONS research KW - SPARE parts KW - hierarchical inventory systems KW - linear programming KW - parametric programming KW - reparable spares KW - UNITED States. Air Force N1 - Accession Number: 18662783; Zorn, Wayne L. 1; Deckro, Richard F. 1; Email Address: richard.deckro@afit.af.mil; Lehmkuhl, Lee J. 2; Affiliations: 1: Department of Operational Sciences, Air Force Institute of Technology, Wright—Patterson Air Force Base, OH 45433-7765, USA; 2: Department of Mathematical Sciences, United States Air Force Academy, Suite 6D2A, 2354 Fairchild Drive, CO 80840-6252, USA; Issue Info: 1999, Vol. 91 Issue 1-4, p319; Thesaurus Term: INVENTORIES; Thesaurus Term: STOCKS (Finance); Thesaurus Term: MATHEMATICAL models; Thesaurus Term: OPERATIONS research; Subject Term: SPARE parts; Author-Supplied Keyword: hierarchical inventory systems; Author-Supplied Keyword: linear programming; Author-Supplied Keyword: parametric programming; Author-Supplied Keyword: reparable spares ; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; NAICS/Industry Codes: 928110 National Security; Number of Pages: 19p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=18662783&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Fullerton, Richard AD - US Air Force Academy T1 - An Experimental Investigation of Research Tournaments JO - Economic Inquiry JF - Economic Inquiry Y1 - 1999/10// VL - 37 IS - 4 SP - 624 EP - 636 SN - 00952583 N1 - Accession Number: 0507908 Partial authors List; ; Keywords: Equilibrium; R&D; Search; Publication Type: Journal Article; Update Code: 200002 N2 - Research tournaments are predicted to encourage R&D. Recent theoretical developments in research tournaments are grounded in search theory. Although the economic intuition behind tournaments is straightforward, computing equilibrium strategies is complex. The participants compute a stopping rule based on the number of participants, the prize and the cost of research. It is an empirical question whether agents will behave as predicted or will employ simple "rule of thumb" strategies such as taking a predetermined number of draws. This paper reports the results of a series of laboratory experiments designed to test the predictions of the search model of tournaments. KW - Management of Technological Innovation and R&D O32 KW - Search; Learning; Information and Knowledge; Communication; Belief D83 L3 - http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291465-7295/issues UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0507908&site=ehost-live&scope=site UR - http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291465-7295/issues DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 107084838 T1 - Using free weights to improve lateral movement performance. AU - Hedrick A Y1 - 1999/10//1999 Oct N1 - Accession Number: 107084838. Language: English. Entry Date: 20000201. Revision Date: 20150818. Publication Type: Journal Article; pictorial. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Weight Lifting -- Methods KW - Sport Specific Training KW - Athletic Training KW - Muscle Strengthening -- Methods SP - 21 EP - 25 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 21 IS - 5 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107084838&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - RPRT AU - Ramesh, R. AU - Andrews, Dee H. T1 - DISTRIBUTED MISSION TRAINING: TEAMS, VIRTUAL REALITY, and REAL-TIME NETWORKING. JO - Communications of the ACM JF - Communications of the ACM Y1 - 1999/09// VL - 42 IS - 9 M3 - Industry Overview SP - 64 EP - 67 PB - Association for Computing Machinery SN - 00010782 AB - The article analyzes the potential and challenges in Distributed Mission Training (DMT) concept that provides a powerful framework to develop integrated virtual, constructive and real-time team training platforms, especially, focusing on the on-going research in the U.S. Air Force. The objective of DMT is to concurrently train people in team efforts involving coordination, communication and decision making and teams may not necessarily be co-located and could be engaged in independent as well as coordinated tasks at remote sites. Some of the critical questions, in this regard, are how and when DMT should be used as part of a formal training program involving a multitude of team skills and equipment, what are the technological design options and how should DMT systems be configured. The article states that answers to these questions in the form of an analysis of a real-world DMT implementation, practical experience with DMT and performance assessments from controlled team training studies. KW - DECISION making KW - COMMUNICATION KW - INDUSTRIAL design KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 11951053; Ramesh, R. 1; Email Address: rramesh@acsu.buffalo.edu; Andrews, Dee H. 2; Email Address: Dee.Andrews@williams.af.mil; Affiliations: 1: Associate Professor of Management Science and Systems, School of Management, SUNY at Buffalo, NY.; 2: Technical Advisor Warfighter Training Research Division,Air Force Research Laboratory, Mesa, AZ.; Issue Info: Sep99, Vol. 42 Issue 9, p64; Thesaurus Term: DECISION making; Thesaurus Term: COMMUNICATION; Thesaurus Term: INDUSTRIAL design; Subject: UNITED States ; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 4p; Document Type: Industry Overview L3 - 10.1145/315762.315775 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=11951053&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Bell, Herbert H. T1 - THE EFFECTIVENESS OF DISTRIBUTED MISSION TRAINING. JO - Communications of the ACM JF - Communications of the ACM Y1 - 1999/09// VL - 42 IS - 9 M3 - Article SP - 72 EP - 78 PB - Association for Computing Machinery SN - 00010782 AB - The article highlights the effectiveness of Distributed Mission Training (DMT), a synthetic training environment that can enhance teamwork performance. DMT has adaptively focused and integrated virtual reality and networking technologies for team training in dynamic operational environments, in which, intra and inter team communication, coordination and decision making in such environments are central to mission-critical team performance. Though these attributes are significant in military operations, especially in aircrafts, they define effective teamwork in general, from sports and entertainment to production and service environments. A naturalistic perspective on training is to view the process and its effectiveness from the way people use their experience to analyze, interact and make decisions in field settings. A central theme emerging from an analysis of training processes is that decision making stems from situational awareness and assessment, prioritization in dynamic task environments and action/feedback structures in event management. While DMT has made significant technical progress, there still are a number of human-centered effective and efficient training. KW - COMPUTER networks KW - DECISION making KW - TEAMS in the workplace KW - MILITARY education KW - VIRTUAL reality N1 - Accession Number: 11951055; Bell, Herbert H. 1; Email Address: herbert.bell@williams.af.mil; Affiliations: 1: Chief of the Aircrew Training Branch, Warfighter Training research Division, Human Effectiveness Directorate, Air Force Research Laboratory, Mesa, AZ.; Issue Info: Sep99, Vol. 42 Issue 9, p72; Thesaurus Term: COMPUTER networks; Thesaurus Term: DECISION making; Thesaurus Term: TEAMS in the workplace; Subject Term: MILITARY education; Subject Term: VIRTUAL reality; NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 611110 Elementary and Secondary Schools; NAICS/Industry Codes: 928110 National Security; NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; Number of Pages: 7p; Document Type: Article L3 - 10.1145/315762.315779 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=11951055&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Peppler, Philipp W. AU - Stephens, Steve T1 - IMAGE GENERATION SYSTEMS IN VIRTUAL TRAINING PLATFORMS. JO - Communications of the ACM JF - Communications of the ACM Y1 - 1999/09// VL - 42 IS - 9 M3 - Article SP - 85 EP - 88 PB - Association for Computing Machinery SN - 00010782 AB - The article focuses on advanced image generating (IG) systems in virtual training platforms. Computer IG in virtual environments is an important component of Distributed Mission Training (DMT) systems. DMT is one of the limiting factors of performance that is technologically challenging in most synthetic virtual training environments where visual cues play a critical role. Computer-based training has significantly evolved by integrating computer-generated imagery at all levels of the education process. Three principal issues in this process are image complexity, image clarity and speed of computation and display. This novel technology proves ideally suited to fast-moving training environments such as flight simulators. The article emphasizes the need to do research in achieving capabilities of visual systems such as resolution, contrast and brightness and reports that while Nicolas systems are revolutionizing the high-end IG systems, commercial PC-based graphics will soon accelerate DMT visual systems with greatly reduced costs. KW - VIRTUAL machine systems KW - IMAGE analysis KW - COMPUTER graphics KW - FLIGHT simulators N1 - Accession Number: 11951057; Peppler, Philipp W. 1; Email Address: phil.peppler@williams.af.mil; Stephens, Steve 1; Email Address: steve.stephens@williams.af.mil; Affiliations: 1: Visual system Development,Air Force Research Laboratory/Warfighter Training Research Division, Mesa, AZ.; Issue Info: Sep99, Vol. 42 Issue 9, p85; Thesaurus Term: VIRTUAL machine systems; Subject Term: IMAGE analysis; Subject Term: COMPUTER graphics; Subject Term: FLIGHT simulators; Number of Pages: 4p; Document Type: Article L3 - 10.1145/315762.315782 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=11951057&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - GEN AU - Meredith, James H. T1 - Hemingway's U.S. 3rd Army Inspector General Interview During World War II. JO - Hemingway Review JF - Hemingway Review Y1 - 1999/09//1999 Centennial Issue VL - 18 IS - 2 M3 - Interview SP - 90 EP - 101 SN - 02763362 AB - Reprints a transcript of an interview of Ernest Hemingway by the U.S. 3rd Army's Inspector General's office. During the final days of World War II in August 1944, Hemingway was accused by fellow reporters of traveling with a troop of French irregulars, in the area of Rambouillet, France, engaging in combat, and covering up his war correspondent's insignia. KW - WORLD War, 1939-1945 -- Journalists KW - AMERICAN authors KW - WORLD War, 1939-1945 KW - REPORTERS & reporting KW - INTERVIEWS KW - COMBAT KW - FRANCE KW - UNITED States. Army. Army, 3rd KW - HEMINGWAY, Ernest, 1899-1961 N1 - Accession Number: 2296425; Meredith, James H. 1; Affiliations: 1 : United States Air Force Academy; Source Info: 1999 Centennial Issue, Vol. 18 Issue 2, p90; Historical Period: 1944; Subject Term: WORLD War, 1939-1945 -- Journalists; Subject Term: AMERICAN authors; Subject Term: WORLD War, 1939-1945; Subject Term: REPORTERS & reporting; Subject Term: INTERVIEWS; Subject Term: COMBAT; Subject: FRANCE; Number of Pages: 12p; Illustrations: 1 Black and White Photograph; Document Type: Interview; Full Text Word Count: 2831 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ahl&AN=2296425&site=ehost-live&scope=site DP - EBSCOhost DB - ahl ER - TY - JOUR AU - Abadi, Jacob T1 - PRAGMATISM AND RHETORIC IN YEMEN'S POLICY TOWARD ISRAEL. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 1999///Fall99 VL - 16 IS - 2 M3 - Article SP - 95 EP - 118 SN - 87553449 AB - Traces Yemen's relationship with Israel from the 1940's to the 1990's and demonstrates that notwithstanding Yemen's reluctance over the years to recognize Israel, the Yemeni governments demonstrated considerable flexibility and pragmatism. KW - GOVERNMENT policy KW - INTERNATIONAL relations KW - INTERNATIONAL law KW - CIVIL war KW - RESISTANCE to government KW - POLITICAL science KW - TERRITORIAL partition KW - ISRAEL KW - YEMEN (Republic) N1 - Accession Number: 2126408; Abadi, Jacob 1; Affiliations: 1 : Associate Professor of History, United States Air Force Academy, Colorado Springs, CO 80918; Source Info: Fall99, Vol. 16 Issue 2, p95; Historical Period: 1940 to 1999; Subject Term: GOVERNMENT policy; Subject Term: INTERNATIONAL relations; Subject Term: INTERNATIONAL law; Subject Term: CIVIL war; Subject Term: RESISTANCE to government; Subject Term: POLITICAL science; Subject Term: TERRITORIAL partition; Subject: ISRAEL; Subject: YEMEN (Republic); Number of Pages: 24p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hia&AN=2126408&site=ehost-live&scope=site DP - EBSCOhost DB - hia ER - TY - JOUR ID - 1999-03842-004 AN - 1999-03842-004 AU - Hickox, Joseph C. AU - Wickens, Christopher D. T1 - Effects of elevation angle disparity, complexity, and feature type on relating out-of-cockpit field of view to an electronic cartographic map. JF - Journal of Experimental Psychology: Applied JO - Journal of Experimental Psychology: Applied JA - J Exp Psychol Appl Y1 - 1999/09// VL - 5 IS - 3 SP - 284 EP - 301 CY - US PB - American Psychological Association SN - 1076-898X SN - 1939-2192 N1 - Accession Number: 1999-03842-004. Partial author list: First Author & Affiliation: Hickox, Joseph C.; US Air Force Academy, Dept of the Air Force, Dept of Behavioral Sciences & Leadership, CO, US. Release Date: 19991001. Correction Date: 20110613. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aviation; Spatial Orientation (Perception); Task Complexity; Visual Displays; Visual Field. Minor Descriptor: Flight Instrumentation; Flight Simulation; Spatial Organization. Classification: Visual Perception (2323). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Methodology: Empirical Study. References Available: Y. Page Count: 18. Issue Publication Date: Sep, 1999. Publication History: Accepted Date: Dec 22, 1998; Revised Date: Dec 11, 1998; First Submitted Date: Apr 3, 1998. Copyright Statement: American Psychological Association. 1999. AB - This study examined 3 variables relating out-of-cockpit field of view to an electronic cartographic map. The primary independent variable was the difference between the sine of the elevation angles of the map and the sine of the elevation angles of the forward field of view (FFOV). Complexity level and feature type (anthropogenic vs. natural) were also investigated. Using a same–different paradigm, participants compared a cartographic 'map' with a corresponding FFOV. Dependent measures were reaction time (RT) and error rate. Main effects were found for the sine disparity of the map and FFOV, complexity (RT only), and feature type. All interactions were significant and in the expected direction. Main effects of trial type (same or different) and an interaction with complexity were also investigated to examine the participants' search strategy. Conclusions are made and implications for the design of three-dimensional maps are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - elevation angle disparity & complexity & feature type KW - relating out-of-cockpit field of view to electronic cartographic map KW - 18–31 yr old instrument flight class members KW - 1999 KW - Aviation KW - Spatial Orientation (Perception) KW - Task Complexity KW - Visual Displays KW - Visual Field KW - Flight Instrumentation KW - Flight Simulation KW - Spatial Organization KW - 1999 DO - 10.1037/1076-898X.5.3.284 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1999-03842-004&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Kim-Yin Chan AU - Drasgow, Fritz AU - Sawin, Linda L. T1 - What Is the Shelf Life of a Test? The Effect of Time on the Psychometrics of Cognitive Ability Test Battery. JO - Journal of Applied Psychology JF - Journal of Applied Psychology Y1 - 1999/08// VL - 84 IS - 4 M3 - Article SP - 610 EP - 619 PB - American Psychological Association SN - 00219010 AB - The psychometric stability of the Armed Services Vocational Aptitude Battery was studied with data collected at 5 points over a 16-year period using item response theory (IRT) methods. Although 25 of the 200 items changed significantly over the years across 3 different gender-ethnic groups (i.e., White men, White women, and Black men), the overall characteristics of the tests were not severely affected by item-level changes. Items from tests that were more semantically laden were found to be more susceptible to the effects of time compared with those that focused on skills and principles. The findings are discussed in the context of the effects of time on the effectiveness of psychological measures. A call is made to test developers and test users to pay attention to the shelf life of their tests. The use of IRT methods for studying the effects of time on psychometrics is also discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Psychology is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PSYCHOMETRICS KW - ARMED Services Vocational Aptitude Battery KW - COGNITIVE Abilities Test KW - COGNITIVE ability KW - ITEM response theory KW - INTELLIGENCE tests N1 - Accession Number: 12130399; Kim-Yin Chan 1,2; Email Address: kychan@starnet.gov.sg; Drasgow, Fritz 1; Email Address: fdrasgow@uiuc.edu; Sawin, Linda L. 3; Affiliations: 1: University of Illinois, Urbana—Champaign; 2: Ministry of Defense, Singapore; 3: Air Force Research Laboratory; Issue Info: Aug99, Vol. 84 Issue 4, p610; Subject Term: PSYCHOMETRICS; Subject Term: ARMED Services Vocational Aptitude Battery; Subject Term: COGNITIVE Abilities Test; Subject Term: COGNITIVE ability; Subject Term: ITEM response theory; Subject Term: INTELLIGENCE tests; Number of Pages: 10p; Illustrations: 5 Charts, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12130399&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Panda, Brajendra AU - Giordano, Joseph T1 - DEFENSIVE INFORMATION WARFARE. JO - Communications of the ACM JF - Communications of the ACM Y1 - 1999/07// VL - 42 IS - 7 M3 - Article SP - 30 EP - 32 PB - Association for Computing Machinery SN - 00010782 AB - This article discusses the changing perception of the people towards the use of computers. Computers are no longer viewed as mere number-crunching devices nor is the use of computers limited to the scientific and engineering communities. The advent of high-speed networking technologies has made information sharing through the Internet a prevailing practice for every conceivable segment of society from governments to business and industry to private citizens. Every day, millions of people use the Internet to search for different kinds of information stored in computers and databases that may be on the other side of town or half a world away. While most of these users access data legitimately, some use illicit ways to access and invade other computers. It is extremely hard to protect systems from all types of unauthorized access. According to the article, the objective of defensive information warfare ranges from ensuring authorized use of computer resources to providing complete, uninterrupted operation of computer systems throughout all of the phases of an information attack and defensive information warfare will remain an active research and development area for years to come as new technologies emerge. KW - COMPUTERS KW - INFORMATION warfare KW - INFORMATION technology KW - INTERNET KW - DATABASE management KW - TECHNOLOGICAL innovations N1 - Accession Number: 12513671; Panda, Brajendra 1; Email Address: panda@cs.und.edu; Giordano, Joseph 2; Email Address: giordanoj@rl.af.mil; Affiliations: 1: Assistant Professor of Computer Science at the University of North Dakota.; 2: Technical Advisor for the Defensive Information Warfare Branch of the U. S. Air Force Research Laboratory, Rome Research Site, Rome, NY.; Issue Info: Jul99, Vol. 42 Issue 7, p30; Thesaurus Term: COMPUTERS; Thesaurus Term: INFORMATION warfare; Thesaurus Term: INFORMATION technology; Thesaurus Term: INTERNET; Thesaurus Term: DATABASE management; Thesaurus Term: TECHNOLOGICAL innovations; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 334111 Electronic Computer Manufacturing; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443142 Electronics Stores; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 518210 Data Processing, Hosting, and Related Services; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; Number of Pages: 3p; Document Type: Article L3 - 10.1145/306549.306559 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12513671&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 107217138 T1 - Renal cell carcinoma with extension into right atrium. AU - Magner RG Jr. Y1 - 1999/07// N1 - Accession Number: 107217138. Language: English. Entry Date: 19991001. Revision Date: 20150820. Publication Type: Journal Article; case study; CEU; diagnostic images; exam questions. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 8511806. KW - Kidney Neoplasms -- Ultrasonography KW - Education, Continuing (Credit) KW - Middle Age KW - Male SP - 157 EP - 182 JO - Journal of Diagnostic Medical Sonography JF - Journal of Diagnostic Medical Sonography JA - J DIAGN MED SONOGRAPHY VL - 15 IS - 4 CY - Thousand Oaks, California PB - Sage Publications Inc. AB - Symptoms of renal cell carcinoma include flank pain, a palpable mass, and hematuria. At sonography, the tumor is frequently a contour-deforming renal mass that is less echogenic than normal renal parenchyma. Renal cell carcinoma has a propensity to invade the renal vein and grow toward the right atrium along the inferior vena cava. It is essential to define the extent of tumor involvement by evaluating the renal vein, inferior vena cava, and right atrium. Observation of a distended thrombus-filled renal vein in the setting of a hypoechoic renal mass should prompt a search for retroperitoneal lymphadenopathy and other signs of distant metastatic disease. Renal cell carcinoma most commonly metastasizes to the lung, bone, lymph nodes, liver, adrenal glands, brain, and contralateral kidney. SN - 8756-4793 AD - United States Air Force Academy, 10MDG/SGSAR, 4102 Pinion Drive, USAFA, CO 80840 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107217138&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Foy, Brent D. AU - Toxopeus, Corike AU - Frazier, John M. T1 - Kinetic modeling of slow dissociation of bromosulphophthalein from albumin in perfused rat liver: toxicological implications. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 1999/07// VL - 50 IS - 1 M3 - Article SP - 20 EP - 29 PB - Oxford University Press / USA SN - 10966080 AB - Due to strong binding between organic anions and albumin, the kinetics of the binding process must be carefully considered in biologically-based models used for predictive toxicology applications. Specifically, the slow dissociation rate of an organic anion from the protein may lead to reduced availability of free anion in its flow through the capillaries of an organ. In this work, the effect of the dissociation rate of the anion bromosulphophthalein (BSP) from albumin was studied in isolated, perfused rat livers in the presence of albumin concentrations of 0.25, 1, and 4% (w/v) and an initial BSP concentration of 20 μM. The uptake of BSP from the perfusion medium was modeled using a biologically-based kinetic model of the sinusoidal and intracellular liver compartments. The best fit of the model to data resulted in the prediction of a slow dissociation rate constant for the BSP-albumin of between 0.097 and 0.133 -1. Assuming BSP and albumin to be in binding equilibrium in the sinusoidal space, with rapid binding-rate constants, as is often done, produced an unacceptable fit. These results indicate that the strong binding interaction between BSP and albumin, beyond keeping the concentration of free chemical low due to a small equilibrium dissociation constant, can also reduce uptake by an organ due to the slow release of BSP from the protein during passage through the capillaries. The implication of this dissociation-limited condition, when extrapolating to other doses and in-vivo situations, is discussed. [ABSTRACT FROM PUBLISHER] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Albumins KW - Toxicology KW - Anions KW - Dissociation (Chemistry) KW - Liver KW - Rats as laboratory animals KW - albumin KW - BSP KW - dissociation KW - liver KW - protein binding KW - protein binding. KW - rat KW - toxicokinetics N1 - Accession Number: 44611622; Foy, Brent D. 1; Email Address: bfoy@discover.wright.edu; Toxopeus, Corike 2; Frazier, John M. 3; Affiliations: 1: Department of Physics, Wright State University, Dayton, Ohio 45435; 2: Department of Pharmacology, Wright State University, Dayton, Ohio 45435; 3: Human Effectiveness Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433-7400; Issue Info: Jul1999, Vol. 50 Issue 1, p20; Thesaurus Term: Albumins; Thesaurus Term: Toxicology; Subject Term: Anions; Subject Term: Dissociation (Chemistry); Subject Term: Liver; Subject Term: Rats as laboratory animals; Author-Supplied Keyword: albumin; Author-Supplied Keyword: BSP; Author-Supplied Keyword: dissociation; Author-Supplied Keyword: liver; Author-Supplied Keyword: protein binding; Author-Supplied Keyword: protein binding.; Author-Supplied Keyword: rat; Author-Supplied Keyword: toxicokinetics; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 10p; Illustrations: 2 Diagrams, 3 Charts, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=44611622&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 1999-05657-006 AN - 1999-05657-006 AU - Foster, Craig A. AU - Rusbult, Caryl E. T1 - Injustice and powerseeking. JF - Personality and Social Psychology Bulletin JO - Personality and Social Psychology Bulletin JA - Pers Soc Psychol Bull Y1 - 1999/07// VL - 25 IS - 7 SP - 834 EP - 849 CY - US PB - Sage Publications SN - 0146-1672 SN - 1552-7433 N1 - Accession Number: 1999-05657-006. Partial author list: First Author & Affiliation: Foster, Craig A.; US Air Force Academy, CO, US. Release Date: 19990801. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Behavior; Motivation; Interpersonal Control. Classification: Personality Traits & Processes (3120). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Methodology: Empirical Study. Page Count: 16. Issue Publication Date: Jul, 1999. AB - Lay perception and scientific accounts of powerseeking are rather uniformly negative, portraying powerseeking as dispositionally driven behavior with self-interested or antisocial origins. The present research suggests that powerseeking may be prosocially motivated, with situational rather than exclusively dispositional origins. Two experiments demonstrate that powerseeking motivation and behavior are reliably motivated by the perception of injustice. Both experiments reveal that injustice-inspired powerseeking is mediated by the degree to which a situation is perceived to be wrong, violates beliefs regarding fairness, and inspires feelings of anger or upset. In addition, Exp 2 reveals that the scope of justice concerns is relatively broad, in that powerseeking is not limited to injustice involving close victims. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - injustice KW - powerseeking motivation & behavior KW - college students KW - 1999 KW - Behavior KW - Motivation KW - Interpersonal Control KW - 1999 DO - 10.1177/0146167299025007006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1999-05657-006&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Fullerton, Richard L. AU - McAfee, R. Preston AD - US Air Force Academy AD - U TX T1 - Auctioning Entry into Tournaments JO - Journal of Political Economy JF - Journal of Political Economy Y1 - 1999/06// VL - 107 IS - 3 SP - 573 EP - 605 SN - 00223808 N1 - Accession Number: 0494814; Keywords: Adverse Selection; Auctions; Publication Type: Journal Article; Update Code: 199908 N2 - A research tournament model with heterogeneous contestants is presented. For a large class of contests, the optimal number of contestants is two. This insight makes designing the tournament easier and highlights the importance of selecting highly qualified contestants. While customary uniform-price and discriminatory-price auctions are intuitively appealing mechanisms for solving this adverse selection problem, in practice they generally will not be efficient mechanisms for selecting contestants. Instead, the authors propose an alternative auction format that is equally simple to implement and efficiently selects the most qualified contestants to compete, regardless of the form of contestant heterogeneity. KW - Asymmetric and Private Information; Mechanism Design D82 KW - Auctions D44 L3 - http://www.jstor.org/action/showPublication?journalCode=jpoliecon UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0494814&site=ehost-live&scope=site UR - http://www.jstor.org/action/showPublication?journalCode=jpoliecon DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 107081210 T1 - Flexibility facts. Stretching the hip flexors. AU - Ross M A2 - Ninos J Y1 - 1999/06//1999 Jun N1 - Accession Number: 107081210. Language: English. Entry Date: 20000101. Revision Date: 20150711. Publication Type: Journal Article; pictorial. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Stretching KW - Hip SP - 71 EP - 72 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 21 IS - 3 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - Department of Biology, United States Air Force Academy UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107081210&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Parnell, Gregory S. AU - Jackson, Jack A. AU - Burk, Roger C. AU - Lehmkuhl, Lee J. AU - Engelbrecht Jr., Joseph A. T1 - R&D Concept Decision Analysis: Using Alternate Futures for Sensitivity Analysis. JO - Journal of Multi-Criteria Decision Analysis JF - Journal of Multi-Criteria Decision Analysis Y1 - 1999/05// VL - 8 IS - 3 M3 - Article SP - 119 EP - 127 SN - 10579214 AB - The time from identification of new research and development (R&D) concepts to deployment as military weapon systems is 10-25 years. Significant uncertainties exist about future political military states of the world and the value of these future systems may depend on which state(s) of the world eventually occur. Multi-objective decision analysis can be used to evaluate the future contribution of R&D concepts to military objectives. Scenarios (or alternate futures) are a key decision analysis technique to examine the uncertain future. The standard approach to uncertainty is to identify mutually exclusive and collectively exhaustive outcomes and assign probabilities to each outcome. Unfortunately, the descriptions of possible futures are seldom collectively exhaustive. A sensitivity analysis approach is developed using different multi-objective weights for each of several alternate futures. Sensitivity analysis is performed to identify the R&D concepts that are the most robust across the alternate futures. This sensitivity analysis approach has been successfully used on two major studies, SPACECAST 2020 and Air Force 2025. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Multi-Criteria Decision Analysis is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH & development KW - DECISION making KW - DEPLOYMENT (Military strategy) KW - MILITARY weapons KW - MILITARY strategy KW - alternate futures KW - multi-attribute utility theory KW - multi-objective decision analysis KW - scenarios KW - sensitivity analysis N1 - Accession Number: 16868026; Parnell, Gregory S. 1,2; Email Address: gparnell@toffler.com; Jackson, Jack A. 3; Email Address: jajackso@ida.org; Burk, Roger C. 4; Email Address: rcburk@wizard.net; Lehmkuhl, Lee J. 5; Email Address: lehmkuhl@swc.schriever.af.mil; Engelbrecht Jr., Joseph A. 2; Email Address: jae@toffler.com; Affiliations: 1: Department of Systems Engineering, United States Military Academy, West Point, NY 10996-1779, USA; 2: Toffler Associates, 302 Harbor's Point, 40 Beach Street, Manchester, MA 01944, USA; 3: Joint Advanced Warfighting Programs, Institute for Defense Analyses, 1801 N Beauregard Street, Alexandria, VA 22311-1772, USA; 4: Aerospace Corporation, 15049 Conference Center Drive, Chantilly, VA 20151, USA; 5: Department of Mathematical Sciences, HQ USAFA/DFMS, 2354 Fairchild Drive, Suite 6D2A. United States Air Force Academy, CO 80840-6252, USA; Issue Info: May1999, Vol. 8 Issue 3, p119; Thesaurus Term: RESEARCH & development; Thesaurus Term: DECISION making; Subject Term: DEPLOYMENT (Military strategy); Subject Term: MILITARY weapons; Subject Term: MILITARY strategy; Author-Supplied Keyword: alternate futures; Author-Supplied Keyword: multi-attribute utility theory; Author-Supplied Keyword: multi-objective decision analysis; Author-Supplied Keyword: scenarios; Author-Supplied Keyword: sensitivity analysis; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 9p; Illustrations: 2 Diagrams, 1 Chart, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=16868026&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 107217778 T1 - Effect of lower-extremity position and stretching on hamstring muscle flexibility. AU - Ross M Y1 - 1999/05//1999 May N1 - Accession Number: 107217778. Language: English. Entry Date: 19991001. Revision Date: 20150711. Publication Type: Journal Article; pictorial; research; tables/charts. Journal Subset: Allied Health; Biomedical; Double Blind Peer Reviewed; Peer Reviewed; USA. NLM UID: 9415084. KW - Hamstring Muscles KW - Stretching KW - Biomechanics KW - Running KW - Body Weights and Measures KW - Knee KW - Extension -- Evaluation KW - Exercise Physiology KW - Exercise Test KW - Goniometry KW - Statistical Significance KW - Comparative Studies KW - Pretest-Posttest Design KW - Intrarater Reliability KW - Interrater Reliability KW - Confidence Intervals KW - Reliability KW - Intraclass Correlation Coefficient KW - Two-Way Analysis of Variance KW - Repeated Measures KW - T-Tests KW - Descriptive Statistics KW - Adult KW - Male KW - Female KW - Human SP - 124 EP - 129 JO - Journal of Strength & Conditioning Research (Allen Press Publishing Services Inc.) JF - Journal of Strength & Conditioning Research (Allen Press Publishing Services Inc.) JA - J STRENGTH CONDITION RES VL - 13 IS - 2 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. AB - Hamstring stretching is often performed as a preventive measure for hamstring muscle injury. Stretching the hamstring muscle in a position similar to that seen during the stance phase of running has been recommended. However, to my knowledge, no research is available that compares the effectiveness of hamstring stretching in positions similar to those seen during the stance and forward swing phases of running. Therefore, the purpose of this study was to compare hamstring stretching techniques that, in my opinion, place the hamstring muscle in a position similar to that seen during the stance and forward swing phases of running. Twelve healthy subjects with limited hamstring flexibility stretched one leg with a stance phase stretch (SPS) and the other leg with a forward swing phase stretch (FSPS) 5 days per week for 2 weeks. A 2-way analysis of variance (ANOVA) (group and time) was used to analyze the data. The 2-way ANOVA revealed a significant increase in hamstring flexibility between pretest and posttest measures (p = 0.0001) and a significant group-by-time interaction (p = 0.016). Further evaluation of the data indicated that the SPS was significantly more effective at increasing hamstring flexibility than the FSPS (p = 0.016). Although both the SPS and FSPS resulted in significant gains in hamstring flexibility, it was concluded that the SPS was more effective at increasing hamstring flexibility in subjects with limited hamstring flexibility. SN - 1064-8011 AD - Department of Biology, United States Air Force Academy, Colorado 80840-6226 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107217778&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 107215533 T1 - Soccer-specific conditioning. AU - Hedrick A Y1 - 1999/04//1999 Apr N1 - Accession Number: 107215533. Language: English. Entry Date: 19991001. Revision Date: 20150818. Publication Type: Journal Article; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 100888833. KW - Athletic Training Programs KW - Soccer KW - Physical Endurance KW - Aerobic Exercises KW - Running KW - Child KW - Adolescence KW - Adult SP - 17 EP - 21 JO - Strength & Conditioning Journal (Allen Press) JF - Strength & Conditioning Journal (Allen Press) JA - STRENGTH CONDITION J VL - 21 IS - 2 CY - Lawrence, Kansas PB - Allen Press Publishing Services Inc. SN - 1524-1602 AD - Strength and Conditioning Coach, United States Air Force Academy UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107215533&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Jepson, Gary W. AU - McDougal, James N. T1 - Predicting vehicle effects on the dermal absorption of halogenated methanes using physiologically based modeling. JO - Toxicological Sciences JF - Toxicological Sciences Y1 - 1999/04// VL - 48 IS - 2 M3 - Article SP - 180 EP - 188 PB - Oxford University Press / USA SN - 10966080 AB - Occupational and environmental settings present opportunities for humans to come into contact with a variety of chemicals via the dermal route. The chemicals contacting the skin are likely to be diluted with a vehicle or present as a component of a mixture. In order to support risk assessment activities, we evaluated the vehicle effects on dermal penetration of two halogenated hydrocarbons, dibromomethane (DBM) and bromochloromethane (BCM). In vivo exposures to 15 combinations of these in water, mineral oil, and corn oil vehicles were conducted, and blood was sampled for dibromomethane and bromochloromethane during the exposure at 0.5, 1, 2, 4, 8, 12 and 24 h. A physiologically based pharmacokinetic (PBPK) model was used to estimate the total amounts of dibromomethane or bromochloromethane that were absorbed during the exposure, and the dermal permeability coefficients were determined. While the permeability coefficients for dibromomethane and bromochloromethane were approximately 73- and 40-fold higher, respectively, in the water vehicle than in the corn oil, the permeability coefficient, when normalized for the skin:vehicle matrix partition coefficient, varied by less than a factor of 2. The permeability in an aqueous vehicle was then successfully used to predict the permeability coefficient for dibromomethane in a nonpolar vehicle, peanut oil. [ABSTRACT FROM PUBLISHER] AB - Copyright of Toxicological Sciences is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Hazardous substance exposure KW - Health risk assessment KW - Halocarbons KW - Methane KW - Bromochloromethane KW - dermal exposure KW - halogenated carbons KW - permeability coefficients KW - polar and non-polar vehicles KW - rat N1 - Accession Number: 44405740; Jepson, Gary W. 1; McDougal, James N. 2; Affiliations: 1: DuPont Haskell Laboratories, H1/1313, PO Box 50, Newark, DE 19714; 2: U.S. Air Force Research Laboratory, Human Effectiveness Directorate, AFRL/HEST, 2856 G. Street, Area B, Building 79, Wright-Patterson AFB, Ohio 45433-7400; Issue Info: Apr1999, Vol. 48 Issue 2, p180; Thesaurus Term: Hazardous substance exposure; Thesaurus Term: Health risk assessment; Thesaurus Term: Halocarbons; Thesaurus Term: Methane; Subject Term: Bromochloromethane; Author-Supplied Keyword: dermal exposure; Author-Supplied Keyword: halogenated carbons; Author-Supplied Keyword: permeability coefficients; Author-Supplied Keyword: polar and non-polar vehicles; Author-Supplied Keyword: rat; NAICS/Industry Codes: 923120 Administration of Public Health Programs; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 9p; Illustrations: 4 Charts, 9 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=44405740&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 2006-01142-002 AN - 2006-01142-002 AU - Chen, Pinyuen AU - Melvin, William L. AU - Wicks, Michael C. T1 - Screening among Multivariate Normal Data. JF - Journal of Multivariate Analysis JO - Journal of Multivariate Analysis JA - J Multivar Anal Y1 - 1999/04// VL - 69 IS - 1 SP - 10 EP - 29 CY - Netherlands PB - Elsevier Science SN - 0047-259X N1 - Accession Number: 2006-01142-002. Partial author list: First Author & Affiliation: Chen, Pinyuen; Department of Mathematics, Syracuse University, Syracuse, NY, US. Release Date: 20070103. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Multivariate Analysis; Population; Sample Size; Screening. Classification: Statistics & Mathematics (2240). Population: Human (10). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 20. Issue Publication Date: Apr, 1999. AB - This paper considers the problem of screening k multivariate normal populations (secondary data) with respect to a control population (primary data) in terms of covariance structure. A screening procedure, developed based upon statistical ranking and selection theory, is designed to include in the selected subset those populations which have the same (or similar) covariance structure as the control population, and exclude those populations which differ significantly. Formulas for computing the probability of a correct selection and the least favorable configuration are developed. The sample size required to achieve a specific probability requirement is also developed, with results presented in tabular form. This secondary data selection procedure is illustrated via an example with applications to radar signal processing. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - data selection KW - multivariate normal populations KW - control population KW - screening KW - probability KW - 1999 KW - Multivariate Analysis KW - Population KW - Sample Size KW - Screening KW - 1999 U1 - Sponsor: Air Force Office of Scientific Research. Recipients: No recipient indicated DO - 10.1006/jmva.1998.1788 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2006-01142-002&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Chesley, Julie A. AU - Wenger, Mike S. T1 - Transforming an Organization: USING MODELS TO FOSTER A STRATEGIC CONVERSATION. JO - California Management Review JF - California Management Review Y1 - 1999///Spring99 VL - 41 IS - 3 M3 - Article SP - 54 EP - 73 PB - California Management Review SN - 00081256 AB - To lead the reinvention of government, many federal agencies are searching for understandable, practical, and effective models to frame strategic change. Executives hope to find strategic models that offer simple, direct solutions to their problems. However, existing models of strategy must be transformed to fit an organization just as the organization must be transformed in light of the model. The model and the organization co-evolve. This is illustrated through a longitudinal case study of the National Reconnaissance Office, which adopted the "Balanced Scorecard" as a strategic management and performance measurement system. This article develops and presents a framework of mutual adaptation to clarify the variety of inter-related changes required in the strategy formulation and implementation. [ABSTRACT FROM AUTHOR] AB - Copyright of California Management Review is the property of California Management Review and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRATEGIC planning KW - ORGANIZATIONAL change KW - MANAGEMENT science KW - BALANCED scorecard (Management) KW - BUSINESS communication KW - ORGANIZATIONAL structure KW - INDUSTRIAL management KW - GOVERNMENT agencies KW - ORGANIZATIONAL effectiveness KW - BUSINESS models KW - MANAGEMENT KW - UNITED States. National Reconnaissance Office N1 - Accession Number: 1867071; Chesley, Julie A. 1; Wenger, Mike S. 2; Affiliations: 1: Director of Assessments and Assistant Professor, Department of Management, United States Air Force Academy; 2: Wenger & Wenger Consulting, Fairfax Station, Virginia; Issue Info: Spring99, Vol. 41 Issue 3, p54; Thesaurus Term: STRATEGIC planning; Thesaurus Term: ORGANIZATIONAL change; Thesaurus Term: MANAGEMENT science; Thesaurus Term: BALANCED scorecard (Management); Thesaurus Term: BUSINESS communication; Thesaurus Term: ORGANIZATIONAL structure; Thesaurus Term: INDUSTRIAL management; Thesaurus Term: GOVERNMENT agencies; Thesaurus Term: ORGANIZATIONAL effectiveness; Thesaurus Term: BUSINESS models; Thesaurus Term: MANAGEMENT ; Company/Entity: UNITED States. National Reconnaissance Office; NAICS/Industry Codes: 921190 Other General Government Support; NAICS/Industry Codes: 913910 Other local, municipal and regional public administration; NAICS/Industry Codes: 911910 Other federal government public administration; NAICS/Industry Codes: 912910 Other provincial and territorial public administration; Number of Pages: 20p; Illustrations: 3 Diagrams; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=1867071&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Morrall Jr., Abraham T1 - The Survivor Loyalty Factor. JO - Human Resource Development Quarterly JF - Human Resource Development Quarterly Y1 - 1999///Spring99 VL - 10 IS - 1 M3 - Article SP - 95 EP - 99 SN - 10448004 AB - It is suggested that employees remain loyal to their downsized corporate organization in spite of downsizing and in spite of remaining concerned about future employment. Researchers continue to show that loyalty is an important factor in the success of an organization. Studies also show that employees stay as long as the working conditions are suitable and opportunities for advancement are open. However, survivors of downsizing want management to provide avenues to discuss employment and solutions to employment issues in return for their continued commitment. Because loyalty heavily influences the post-downsized work environment, it is an important variable to measure. KW - EMPLOYEE loyalty KW - LOYALTY KW - EMPLOYEES -- Dismissal of KW - DOWNSIZING of organizations KW - ORGANIZATIONAL change N1 - Accession Number: 11495276; Morrall Jr., Abraham 1; Affiliations: 1: United States Air Force; Issue Info: Spring99, Vol. 10 Issue 1, p95; Thesaurus Term: EMPLOYEE loyalty; Thesaurus Term: LOYALTY; Thesaurus Term: EMPLOYEES -- Dismissal of; Thesaurus Term: DOWNSIZING of organizations; Thesaurus Term: ORGANIZATIONAL change; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=11495276&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 2015-42597-024 AN - 2015-42597-024 AU - Allen, Charles N. AU - Jiang, Zhi-Gen AU - Teshima, Koji AU - Darland, Tristan AU - Ikeda, Masayuki AU - Nelson, Cole S. AU - Quigley, Denise I. AU - Yoshioka, Tohru AU - Allen, Richard G. AU - Rea, Michael A. AU - Grandy, David K. T1 - Orphanin-FQ/nociceptin (OFQ/N) modulates the activity of suprachiasmatic nucleus neurons. JF - The Journal of Neuroscience JO - The Journal of Neuroscience JA - J Neurosci Y1 - 1999/03// VL - 19 IS - 6 SP - 2152 EP - 2160 CY - US PB - Society for Neuroscience SN - 0270-6474 SN - 1529-2401 AD - Allen, Charles N., Center for Research on Occupational and Environmental Toxicology, Oregon Health Sciences University, L606, 3181 Southwest Sam Jackson Park Road, Portland, OR, US, 97201-3098 N1 - Accession Number: 2015-42597-024. PMID: 10066268 Partial author list: First Author & Affiliation: Allen, Charles N.; Center for Research on Occupational and Environmental Toxicology, Oregon Health Sciences University, Portland, OR, US. Release Date: 20160922. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Grant Information: Allen, Charles N. Major Descriptor: Animal Circadian Rhythms; Hyperpolarization; Suprachiasmatic Nucleus. Minor Descriptor: Calcium; Mammals; Neurons. Classification: Neuropsychology & Neurology (2520). Population: Animal (20); Male (30). Methodology: Empirical Study; Quantitative Study. Page Count: 9. Issue Publication Date: Mar, 1999. Publication History: Accepted Date: Dec 22, 1998; Revised Date: Dec 14, 1998; First Submitted Date: Oct 13, 1998. Copyright Statement: Society for Neuroscience. 1999. AB - Neurons in the suprachiasmatic nucleus (SCN) constitute the principal circadian pacemaker of mammals. In situ hybridization studies revealed expression of orphanin-FQ/nociceptin (OFQ/N) receptor (NOR) mRNA in the SCN, whereas no expression of mRNA for preproOFQ/N (ppOFQ/N) was detected. The presence of OFQ/N peptide in the SCN was demonstrated by radioimmunoassay. SCN neurons (88%) responded dose-dependently to OFQ/N with an outward current (EC₅₀ = 22.3 nM) that was reduced in amplitude by membrane hyperpolarization and reversed polarity near the theoretical potassium equilibrium potential. [Phe¹ψ(Ch₂-NH)Gly²]OFQ/N(1-13)NH₂ (3 µM), a putative NOR antagonist, activated a small outward current and significantly reduced the amplitude of the OFQ/N-stimulated current. OFQ/N reduced the NMDA receptor-mediated increase in intracellular Ca2+. When injected unilaterally into the SCN of Syrian hamsters housed in constant darkness, OFQ/N (1-50 pmol) failed to alter the timing of the hamsters' wheel-running activity. However, injection of OFQ/N (0.1-50 pmol) before a brief exposure to light during the midsubjective night significantly attenuated the light-induced phase advances of the activity rhythm. These data are consistent with the interpretation that OFQ/N acting at specific receptors modulates the activity of SCN neurons and, thereby, the response of the circadian clock to light. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - orphanin-FQ KW - nociceptin KW - suprachiasmatic nucleus KW - circadian rhythm KW - potassium current KW - calcium KW - 1999 KW - Animal Circadian Rhythms KW - Hyperpolarization KW - Suprachiasmatic Nucleus KW - Calcium KW - Mammals KW - Neurons KW - 1999 U1 - Sponsor: National Institutes of Health, US. Grant: AG10794; NS036607. Recipients: Allen, Charles N. U1 - Sponsor: National Institutes of Health, US. Grant: DA08562. Recipients: Grandy, David K. U1 - Sponsor: Air Force Office of Scientific Research. Grant: 96-AL-004. Recipients: Rea, Michael A. U1 - Sponsor: Japan Society for the Promotion of Science, “Research for the Future” Program, Japan. Grant: 96L00310. Recipients: No recipient indicated UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2015-42597-024&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - THES ID - 109874342 T1 - Adherence to the otitis media with effusion clinical practice guideline by providers in a United States Air Force medical treatment facility. AU - Pengilly PL Y1 - 1999/01// N1 - Accession Number: 109874342. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Practice Guidelines -- Utilization KW - Otitis Media with Effusion -- Therapy KW - United States Agency for Healthcare Research and Quality KW - Descriptive Research KW - Record Review KW - Child, Preschool KW - Child KW - Human SP - 58 p EP - 58 p JO - Adherence to the Otitis Media With Effusion Clinical Practice Guideline by Providers in a United States Air Force Medical Treatment Facility JF - Adherence to the Otitis Media With Effusion Clinical Practice Guideline by Providers in a United States Air Force Medical Treatment Facility PB - Uniformed Services University of the Health Sciences AB - Clinical practice guidelines are developed to minimize variations in treatment patterns while assisting healthcare providers in clinical decision making. The United States Agency for Health Care Policy and Research published the Otitis Media with Effusion (OME) in Young Children Clinical Practice Guideline Number 12 widely disseminated by 1996. The guideline provides information on diagnostic criteria, hearing evaluations, environmental risk factors, therapeutic interventions, and a treatment algorithm. Initial treatment for OME does not require antibiotic therapy lessening microbial drug resistance. Little documentation exists reporting the application of this guideline. This study used a descriptive quantitative design to examine adherence to this guideline by healthcare providers in a United States Air Force Medical Treatment Facility. A total of 196 medical records of children diagnosed with otitis media were audited using a checklist developed from the treatment algorithm. Twenty-three of these children had OME. Using summary statistics, the audit showed antibiotics, decongestants, antihistamines, steroids and surgery were not used as per guideline recommendations. Areas of low compliance were use of the six-week follow-up interval, documentation of environmental risk factor control counseling, and documentation of the use of pneumatic otoscopy and/or tympanometry to evaluate the tympanic membrane for OME and acute otitis media. AV - Order Info: 1399532 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874342&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874331 T1 - Air Force health care providers incidence of performing testicular exams and instruction of testicular self-exam. AU - Adams NS Y1 - 1999/01// N1 - Accession Number: 109874331. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Physicians, Family KW - Nurse Practitioners KW - Physician Assistants KW - Testicular Self-Examination -- Education KW - Testicular Diseases -- Prevention and Control KW - United States Air Force KW - Descriptive Research KW - Conceptual Framework KW - Random Sample KW - Comparative Studies KW - Human SP - 72 p EP - 72 p JO - Air Force Health Care Providers Incidence of Performing Testicular Exams & Instruction of Testicular Self-exam JF - Air Force Health Care Providers Incidence of Performing Testicular Exams & Instruction of Testicular Self-exam PB - Uniformed Services University of the Health Sciences AB - The purpose of this study was to describe the incidence of Air Force Health Care Provider's performance of testicular exams and their incidence of teaching testicular self-exam (TSE) within an Air Force healthcare setting. The study is also designed to determine any significant differences among providers, Family Practice Physicians, Nurse Practitioners, and Physicians Assistants, regarding the incidence of performing the above health preventive measures. This is a descriptive/comparative study, and is guided by the theoretical framework by Leavell and Clark of preventive medicine. A random sample of Health Care Provider's was surveyed using a 27 item modified questionnaire from a study done previously by Misener and Fuller. Analysis of data revealed that 58% of MD's, 68% of PA's, and 57% of NP's are performing testicular exams on their patients during routine physicals or sports physicals. Additionally, 80% of MD's, 84% of PA's, and 96% of NP's routinely instruct young men regarding TSE. There were no statistically significant differences among providers in either their incidence of performing testicular exams or their incidence of teaching TSE. Although these percentages do not meet the American Cancer Society recommendation for provider testicular exams, they are higher than previous studies have shown. This study is relevant to the Air Force because there are more than 300,000 young men under the age of 35 years currently on active duty, who fall into the age group at highest risk for testicular cancer. Key Words: testicular cancer, testicular self-exam, knowledge, screening, incidence, testicular neoplasm, provider, performance. AV - Order Info: 1399496 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874331&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874323 T1 - Anesthesia providers' adherence to the use of gloves and eye protection. AU - Koonce BT Y1 - 1999/01// N1 - Accession Number: 109874323. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Anesthetists KW - Eye Protective Devices -- Utilization KW - Gloves -- Utilization KW - Universal Precautions -- Utilization KW - Questionnaires KW - Survey Research KW - Nonexperimental Studies KW - Human SP - 78 p EP - 78 p JO - Anesthesia Providers' Adherence to the Use of Gloves & Eye Protection JF - Anesthesia Providers' Adherence to the Use of Gloves & Eye Protection PB - Uniformed Services University of the Health Sciences AB - The purpose of this study is to determine anesthesia provider adherence to universal precautions, specifically the use of gloves and eye protection. With documented poor adherence to the use of personal protective equipment, anesthesia providers place themselves at risk for occupational exposure to potentially contaminated blood and body fluids on a daily basis. In 1987, the Centers for Disease Control published universal precautions with the basic premise that all patients and their blood and body fluids are to be considered potentially infected. To date, 54 health care workers have seroconverted after having occupational exposure to HIV. Questionnaires were distributed to 33 anesthesia providers with 28 usable surveys returned (85%). Eighteen providers were observed while performing anesthesia related procedures. Survey data revealed that nearly 60% of anesthesia providers are 100% compliant with the use of gloves while performing oropharyngeal procedures, such as laryngoscopy, extubation, and suctioning. However, less than 25% of providers use eye protection 100% of the time when performing these same procedures. Less than 36% providers stated that they were 100% compliant with the use of gloves when performing venous/arterial access procedures. Remarkably, none of the providers surveyed stated that they were 100% compliant with changing their gloves after performing tasks in which their gloves would be contaminated. Observation data showed that nearly 100% of providers used gloves for five procedures that were determined to be high risk for being exposed to a patient's blood or body fluids. The observed use of eye protection was significantly low, corresponding to the provider's survey data. AV - Order Info: 1399519 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874323&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Flynn, Michael R. AU - Gatano, Betty L. AU - McKernan, John L. AU - Dunn, Kevin H. AU - Blazicko, Brian A. AU - Carlton, Gary N. T1 - Modeling Breathing-Zone Concentrations of Airborne Contaminants Generated During Compressed Air Spray Painting. JO - Annals of Occupational Hygiene JF - Annals of Occupational Hygiene Y1 - 1999/01// VL - 43 IS - 1 M3 - Article SP - 67 EP - 76 SN - 00034878 AB - This paper presents a mathematical model to predict breathing-zone concentrations of airborne contaminants generated during compressed air spray painting in cross-flow ventilated booths. The model focuses on characterizing the generation and transport of overspray mist. It extends previous work on conventional spray guns to include exposures generated by HVLP guns. Dimensional analysis and scale model wind-tunnel studies are employed using non-volatile oils, instead of paint, to produce empirical equations for estimating exposure to total mass. Results indicate that a dimensionless breathing zone concentration is a nonlinear function of the ratio of momentum flux of air from the spray gun to the momentum flux of air passing through the projected area of the workers body. The orientation of the spraying operation within the booth is also very significant. The exposure model requires an estimate of the contaminant generation rate, which is approximated by a simple impactor model. The results represent an initial step in the construction of more realistic models capable of predicting exposure as a mathematical function of the governing parameters. [ABSTRACT FROM PUBLISHER] AB - Copyright of Annals of Occupational Hygiene is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Atomization KW - MATHEMATICAL models KW - Mining engineering KW - Cross-flow (Aerodynamics) KW - Coating processes KW - Air compressors KW - Compressed air KW - Industrial painting KW - Consumption (Economics) KW - Mathematical physics KW - dimensional analysis KW - exposure modeling KW - spray-painting KW - transfer efficiency KW - ventilation N1 - Accession Number: 44400010; Flynn, Michael R. 1; Gatano, Betty L. 2; McKernan, John L. 3; Dunn, Kevin H. 3; Blazicko, Brian A. 4; Carlton, Gary N. 4; Affiliations: 1: Department of Environmental Sciences and Engineering, University of North Carolina, Chapel Hill, NC 27599-7400, U.S.A.; 2: Department of Environment and Natural Resources, PO Box 27687, Raleigh, NC 16500, U.S.A.; 3: National Institute of Occupational Safety and Health, 4676 Columbia Parkway, M/S R5, Cincinnati, OH 45226, U.S.A.; 4: United States Air Force Armstrong Laboratory, Industrial Hygiene Branch, Brooks Air Force Base, San Antonio, TX 78235, U.S.A.; Issue Info: Jan1999, Vol. 43 Issue 1, p67; Thesaurus Term: Atomization; Thesaurus Term: MATHEMATICAL models; Thesaurus Term: Mining engineering; Subject Term: Cross-flow (Aerodynamics); Subject Term: Coating processes; Subject Term: Air compressors; Subject Term: Compressed air; Subject Term: Industrial painting; Subject Term: Consumption (Economics); Subject Term: Mathematical physics; Author-Supplied Keyword: dimensional analysis; Author-Supplied Keyword: exposure modeling; Author-Supplied Keyword: spray-painting; Author-Supplied Keyword: transfer efficiency; Author-Supplied Keyword: ventilation; NAICS/Industry Codes: 333910 Pump and compressor manufacturing; NAICS/Industry Codes: 333912 Air and Gas Compressor Manufacturing; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 541330 Engineering Services; NAICS/Industry Codes: 238320 Painting and Wall Covering Contractors; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 10p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=44400010&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - THES ID - 109874337 T1 - Barriers to health promotion and disease prevention within the military health care system. AU - McLaughlin GD Y1 - 1999/01// N1 - Accession Number: 109874337. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Health Promotion KW - Military Personnel KW - Health Services Accessibility -- Evaluation KW - Managed Care Programs KW - Descriptive Research KW - Pender Health Promotion Model KW - Convenience Sample KW - United States Air Force KW - Active Duty Personnel KW - Summated Rating Scaling KW - Content Validity KW - Test-Retest Reliability KW - Male KW - Female KW - Human SP - 56 p EP - 56 p JO - Barriers to Health Promotion & Disease Prevention Within the Military Health Care System JF - Barriers to Health Promotion & Disease Prevention Within the Military Health Care System PB - Uniformed Services University of the Health Sciences AB - Traditionally, healthcare has been focused on illness and disease. Many researchers have described barriers in accessing care during illness. The purpose of this nonexperimental descriptive study was to determine if similar barriers were experienced in a managed-care system when people sought care for wellness activities in a military setting in the United States. The theoretical framework for this study is Pender's Health Promotion Model. According to Pender's Model, cognitive-perceptual factors such as perceived barriers determine participation in health promotion. The more barriers a person encounters in health promotion activities, the less likely that person will participate in health promotion activities. Data was collected from a large city with several military installations in the south central United States. The convenience sample consisted of active duty Air Force men and women currently enrolled in TriCare, the military's managed-care system. A modified version of a tool developed by K.A. Melnyk was used for data collection in this study. The survey tool had questions related to demographics and barriers which might have affected an individual's preventive care practices. More specifically, it included 33-items rated on a 4 point Likert scale related to five categories of barriers: fear, inconvenience, provider-consumer relationship, cost, and site-related factors. Modifications to the original Barriers Scale were made since the tool had not been used on military populations. A panel of experts currently working in primary care clinics and knowledgeable regarding preventive services facilitated determination of content validity. The Content Validity Index (CVI) was 0.98. Test-retest reliability to determine the stability of responses on the instrument was done prior to data collection and resulted in 68% agreement on the two testing occasions. Data was collected over a two-month period from 93 participants. Data was analyzed and reported using descriptive statistics for the demographic data, each item in the Modified Barrier Scale, and each category subscale. Survey participants ranked the barriers in descending order of Provider-consumer relationship, Site-related factors, Cost, Inconvenience, and Fear. Thirty-two participants included written comments that provided additional support for the Modified Barriers Scale. The importance of this study lies in the military's need for a large healthy fighting force that is capable of rapid deployment. This goal can be met through health prevention activities and identifying factors that may be barriers to health care. Key Words: access, barriers, promotion, prevention, military healthcare. AV - Order Info: 1399522 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874337&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874329 T1 - Clinical experiences nurse anesthesia students find most and least beneficial at three stages of clinical education. AU - Ostermeyer BD Y1 - 1999/01// N1 - Accession Number: 109874329. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Education, Nurse Anesthesia KW - Students, Nursing, Masters KW - Education, Clinical KW - Qualitative Studies KW - Conceptual Framework KW - Purposive Sample KW - Constant Comparative Method KW - Human SP - 86 p EP - 86 p JO - Clinical Experiences Nurse Anesthesia Students Find Most & Least Beneficial at Three Stages of Clinical Education JF - Clinical Experiences Nurse Anesthesia Students Find Most & Least Beneficial at Three Stages of Clinical Education PB - Uniformed Services University of the Health Sciences AB - It is important to identify the clinical experiences nurse anesthesia students find the most and least beneficial to their clinical education. Once identified, clinical curricula can be organized in a way to best meet the students' needs as they progress in becoming providers of anesthesia. No qualitative studies were found that describe beneficial and less than beneficial clinical experiences for nurse anesthesia students. In this study, a purposive sample of nine nurse anesthesia students, in three different phases of clinical education, was interviewed. They answered the question; 'what experiences do nurse anesthesia students find the least and most beneficial?' The framework for the study was McAuliffe's conceptual model of advanced practice nursing education. Interviews continued until saturation of the data occurred. The data were analyzed using constant comparative analysis to categorize the data and identify themes. The following eight major categories emerged; clinical experiences, case types, anesthetics, procedures, patient acuity, preceptors, level of supervision, and professional culture. In the three phases of clinical education, student registered nurse anesthetists report specific skills and experiences as more or less beneficial to their learning. While there was some overlap, differences between phases demonstrate that students' learning needs change over time. The results of this study may assist nurse anesthesia faculty in designing improved curricula for clinical education, as well as expand an existing conceptual framework of nurse anesthesia education. AV - Order Info: 1399529 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874329&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874325 T1 - Comparison of the direct costs, length of recovery and incidence of post operative anti-emetic use after anesthesia induction with propofol or a 1:1 mixture of thiopental and propofol. AU - Killpack JR Y1 - 1999/01// N1 - Accession Number: 109874325. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Anesthesia Nursing KW - Thiopental -- Economics KW - Propofol -- Economics KW - Costs and Cost Analysis KW - Thiopental -- Administration and Dosage KW - Propofol -- Administration and Dosage KW - Comparative Studies KW - Data Analysis, Statistical KW - Inpatients KW - Human SP - 80 p EP - 80 p JO - Comparison of the Direct Costs, Length of Recovery & Incidence of Post Operative Anti-emetic Use After Anesthesia Induction With Propofol or a 1:1 Mixture of Thiopental & Propofol JF - Comparison of the Direct Costs, Length of Recovery & Incidence of Post Operative Anti-emetic Use After Anesthesia Induction With Propofol or a 1:1 Mixture of Thiopental & Propofol PB - Uniformed Services University of the Health Sciences AB - The modern anesthesia provider must consider drug costs as important as benefits and risks when choosing which drug to use in an anesthetic. Thiopental has been the gold standard for an IV induction drug although propofol shows a better recovery profile with less post-operative nausea and vomiting, but at a higher cost. We attempted to determine if a 1:1 volume mixture of thiopental and propofol would show a similar recovery profile compared to propofol alone, but at a lower cost. This study examined the records of 212 surgery patients receiving propofol (n=82) or a 1:1 mixture (n=130) for demographic, peri-operative, PACU recovery, anti-emetic use, and cost data. We found that the propofol group had significantly more females, post-operative anti-emetic use, and induction drug costs, while the 1:1 mixture group had significantly longer surgery and anesthesia times. Mean post-operative anti-emetic drug costs were statistically significant (P<0.05) at $3.15 for the propofol group and $1.08 for the 1:1 mixture group. The mean cost of induction for the propofol group was $27.31 and $14.31 for the 1:1 mixture group, a statistically significant (P<0.05) difference of $13.09. The average recovery time for the propofol group was 134 minutes and cost $1205.37, and for the 1:1 mixture group 147 minutes and cost $1320.03. Thus, the difference in PACU charges was $114.66. The difference was not statistically significant. This research suggests that the 1:1 mixture of thiopental and propofol produced a similar recovery profile to propofol alone, but at a lower direct cost. This study supported previous work, and recommends that further research be done to confirm its findings. AV - Order Info: 1399517 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874325&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874336 T1 - Conduction and utilization of research: the relationship between Air Force nurses' attitudes, levels of education, and rank. AU - Moledor HL Y1 - 1999/01// N1 - Accession Number: 109874336. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Nurse Attitudes KW - Military Nursing KW - Research, Nursing KW - Nursing Staff, Hospital KW - Attitude Measures KW - United States Air Force KW - Correlational Studies KW - Convenience Sample KW - Hospitals, Military -- United States KW - Midwestern United States KW - Educational Status KW - Surveys KW - Human SP - 80 p EP - 80 p JO - Conduction & Utilization of Research: The Relationship Between Air Force Nurses' Attitudes, Levels of Education & Rank JF - Conduction & Utilization of Research: The Relationship Between Air Force Nurses' Attitudes, Levels of Education & Rank PB - Uniformed Services University of the Health Sciences AB - The purpose of this study was to examine the attitudes of Air Force nurse toward research. The study used a descriptive-correlational design to examine these attitudes, and the results were correlated with level of education and rank. The study used a convenience sample and the site was a Midwestern Air Force medical center. Almost 100% of Air Force nurses surveyed had a least a Bachelor's degree, 97% had a minimum of a Bachelor's degree in nursing. Air Force nurses had an overall good attitude toward nursing research. Air Force nurses at the Diploma, BSN, and MSN education levels in nursing had the most research experience in the past five years. Rank and highest total level of education (nursing and non-nursing combined) were not found to be statistically significant predictors of research experience or attitude. Highest level of education in nursing was found to be a statistically significant predictor of research experience and attitude in the Air Force nurses studied. Key words: Research, Nursing Research, Military Nursing, Questionnaires, Role, Attitude of Health Personnel, Descriptive Studies, Correlational Studies, Research Process, Attitudes, Military, Air Force AV - Order Info: 1399526 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874336&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874313 T1 - A descriptive study of a perioperative pain service program. AU - Bell LM Y1 - 1999/01// N1 - Accession Number: 109874313. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Postoperative Pain -- Prevention and Control KW - Postoperative Pain -- Drug Therapy KW - Narcotics -- Adverse Effects KW - Surgical Patients KW - Retrospective Design KW - Descriptive Research KW - Record Review KW - Age Factors KW - Orthopedic Surgery -- Adverse Effects KW - Thoracotomy -- Adverse Effects KW - Surgery, Digestive System -- Adverse Effects KW - Inpatients KW - Human SP - 68 p EP - 68 p JO - Descriptive Study of a Perioperative Pain Service Program JF - Descriptive Study of a Perioperative Pain Service Program PB - Uniformed Services University of the Health Sciences AB - Postoperative pain remains one of the most common and difficult problems encountered in clinical practice. Pain can affect numerous physiological processes and prolong surgical recovery. This descriptive study was conducted to determine if relationships exist between type of surgery, pain relief and occurrence of side effects. A retrospective chart audit of 133 surgical patients who received co-axial narcotics for pain management was conducted. The sample was obtained from a 155 bed hospital. A description of patients' age, gender, type of surgery, type of narcotic infusion, side effects, incidence of breakthrough pain, and treatments were recorded and cross tabulated. The following three surgical categories emerged; abdominal, thoracotomy, and orthopedic. Breakthrough pain was reported in 76(58.9%) cases, of these fifty-seven (75%) had abdominal surgery, 17(22.4%) had thoracic surgery, and 2(40%) had orthopedic surgery. By surgical category breakthrough pain occurred in 57 of 106(54.8%) abdominal cases, 17 of 22(81%) of thoracotomies, and 2 of 5(40%) of orthopedic cases. Side effects included 6(4.7%) respiratory depression (n=6). The incidence of nausea and vomiting was comparable within abdominal and thoracotomy cases, 34.9% and 31.8% respectively. Pruritis occurred in 18(17.6%) of abdominal cases and 5(22.7%) of thoracotomies. Inconsistencies in documentation and noncompliance with written guidelines for patient monitoring was found. Recommendations included further education for nurses in proper and timely documentation and creation of a pain management service team. AV - Order Info: 1399499 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874313&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874335 T1 - Differences in the onset and severity of symptoms of malignant hyperthermia with different inhalational anesthetics. AU - Solberg AT Y1 - 1999/01// N1 - Accession Number: 109874335. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Malignant Hyperthermia -- Symptoms KW - Anesthetics -- Adverse Effects KW - Comparative Studies KW - Retrospective Design KW - Data Mining KW - Secondary Analysis KW - Human SP - 90 p EP - 90 p JO - Differences in the Onset & Severity of Symptoms of Malignant Hyperthermia With Different Inhalational Anesthetics JF - Differences in the Onset & Severity of Symptoms of Malignant Hyperthermia With Different Inhalational Anesthetics PB - Uniformed Services University of the Health Sciences AB - Malignant hyperthermia (MH) is an uncommon inherited disorder of skeletal muscle in which commonly used anesthetics can trigger sustained skeletal muscle hypermetabolism in patients who may have had no symptoms previously. The onset and severity of clinical symptoms of MH are variable. Non-clinical studies and case reports have identified differences in the onset and severity of symptoms with the commonly used volatile anesthetics. The purpose of this study was to identify if there is a significant difference in the onset and severity of signs and symptoms of malignant hyperthermia in those MH-susceptible patients who received the different volatile anesthetics. A comparative descriptive research design was used. A retrospective review of the database at the (USUHS) MH muscle biopsy diagnostic center was done. The data collected was used to determine if there was a difference in the onset and severity of signs and symptoms of MH episodes with halothane compared to MH episodes of four other volatile anesthetics. For each of these groups, the following variables were assessed: highest temperature, highest end-tidal carbon dioxide, time from beginning of anesthetic until onset of first MH symptom, time of onset of anesthesia until initial treatment for MH, and the incidence of masseter spasm. Based on results of this study, there was no significant difference among the groups. As much of the pediatric data was excluded, the results may have been skewed. Further studies examining these differences between volatile anesthetics would be extremely valuable in understanding the pathophysiology of malignant hyperthermia. AV - Order Info: 1399538 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874335&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874316 T1 - The effect of endotracheal inflation technique on endotracheal cuff pressure. AU - Evans ML Y1 - 1999/01// N1 - Accession Number: 109874316. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Respiration, Artificial KW - Intubation, Intratracheal -- Methods KW - Pressure -- Evaluation KW - Descriptive Statistics KW - Descriptive Research KW - Inpatients KW - Human SP - 65 p EP - 65 p JO - Effect of Endotracheal Inflation Technique on Endotracheal Cuff Pressure JF - Effect of Endotracheal Inflation Technique on Endotracheal Cuff Pressure PB - Uniformed Services University of the Health Sciences AB - Many surgical procedures require general anesthesia in which endotracheal intubation and mechanical ventilation is utilized in order to maintain adequate patient oxygenation. Endotracheal intubation, helps assure delivery of the adequate ventilation and prevention of aspiration of stomach contents into the lungs. In this study endotracheal cuff pressures were measured and correlated to currently utilized cuff inflation techniques. Data was analyzed using descriptive statistics. In 46% of the cases the cuffs were inflated using the pilot balloon palpation technique, 28% were inflated using the set volume technique, and 26% using the minimum occlusive pressure technique. Regardless of the technique used, none of the cuff pressures collected were found to be in the acceptable range of 18 to 25 mmHg. Thirteen percent of cuff pressures were below the minimum value required to prevent aspiration, and 87% of the sample were inflated above the maximum acceptable pressure, risking tracheal ischemia. These results suggest that the currently used techniques expose patients to excessive endotracheal cuff pressures. AV - Order Info: 1399507 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874316&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874334 T1 - The effect of saquinavir on the rate of metabolism of midazolam. AU - Todd BG Y1 - 1999/01// N1 - Accession Number: 109874334. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Midazolam KW - Protease Inhibitors KW - Drug Interactions KW - Basic Research KW - Chromatography KW - Human SP - 92 p EP - 92 p JO - Effect of Saquinavir on the Rate of Metabolism of Midazolam JF - Effect of Saquinavir on the Rate of Metabolism of Midazolam PB - Uniformed Services University of the Health Sciences AB - Midazolam (MDZ) is used extensively for sedation by clinicians including anesthesia providers. There have been reports that its effects have been enhanced in the presence of other drugs with negative patient outcomes. The P450 mixed function oxidase system contains an enzyme subfamily known as CYP3A. These enzymes have been identified as primarily responsible for the metabolism of MDZ. Protease inhibitors such as saquinavir may inhibit some P450 isoforms. The metabolism of MDZ in the presence of protease inhibitors is presently unclear. This study examines the effect of saquinavir on the rate of metabolism of MDZ. Human liver microsomes were incubated with MDZ with and without saquinavir. The ratio between MDZ's major metabolite alpha-hydroxy MDZ and the internal standard lorazepam were obtained using high performance liquid chromotography (HPLC). These ratios were then compared to those results in the presence of saquinavir. The incubation concentrations of MDZ were similar to therapeutic concentrations of (0.5 micro M, 1 micro M, 3 micro M, 6 micro M, 12 micro M) and saquinavir (0.0 micro M, 0.3 micro M, 1.0 micro M, 3.0 micro M and 10.0 micro M). MDZ was inhibited 56.73% +/-5.63. The Ki was determined to be 3.4 micro M. The interaction exhibited properties of mixed inhibition. These results showed that the rate of metabolism of MDZ was statistically significantly decreases in the presence of saquinavir (p<.05). AV - Order Info: 1399539 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874334&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874319 T1 - The effect of the protease inhibitor ritonavir on the rate of metabolism of midazolam. AU - Haritos G Y1 - 1999/01// N1 - Accession Number: 109874319. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Midazolam KW - Protease Inhibitors KW - Drug Interactions KW - In Vitro Studies KW - Basic Research KW - Human SP - 82 p EP - 82 p JO - Effect of the Protease Inhibitor Ritonavir on the Rate of Metabolism of Midazolam JF - Effect of the Protease Inhibitor Ritonavir on the Rate of Metabolism of Midazolam PB - Uniformed Services University of the Health Sciences AB - Midazolam (MDZ) is a benzodiazepine administered for preoperative sedation. Protease inhibitors (PI) such as ritonavir (RIT) are drugs used in the treatment of the human immunodeficiency virus (HIV) and acquired immune deficiency syndrome (AIDS). MDZ and RIT biotransformation is accomplished by the P450 3A4 enzyme, suggesting a drug interaction may occur. The purpose of this study was to assess the in vitro metabolic reactions of MDZ in the presence of RIT. Human liver microsomes (HLM) were incubated with MDZ alone and then in combination with RIT. Significant inhibition of MDZ metabolism was demonstrated at even subtherapeutic concentrations of RIT. Kinetic analysis showed RIT with an apparent Ki (constant of inhibition) value of 0.00956 micro M. Percent inhibition was as high as 95%. These values suggest the possibility of prolonged sedation and respiratory depression in the clinical setting. AV - Order Info: 1399513 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874319&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874324 T1 - The effect of the time of injection of intrathecal analgesia on the length of early and advanced labor. AU - Koiro BJ Y1 - 1999/01// N1 - Accession Number: 109874324. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Time Factors KW - Labor Stage, First KW - Labor Stage, Second KW - Anesthesia, Obstetrical KW - Labor KW - Injections, Intraspinal KW - Retrospective Design KW - Comparative Studies KW - Inpatients KW - Pregnancy KW - Female KW - Human SP - 55 p EP - 55 p JO - Effect of the Time of Injection of Intrathecal Analgesia on the Length of Early & Advanced Labor JF - Effect of the Time of Injection of Intrathecal Analgesia on the Length of Early & Advanced Labor PB - Uniformed Services University of the Health Sciences AB - Controversies in obstetric anesthesia include the effect of regional analgesia on the progress and length of labor. The purpose of this retrospective study was to determine the effect of the timing of intrathecal narcotic analgesia on women in the labor and delivery setting. The study population included 96 patients with low risk, singleton pregnancies with similar demographic characteristics. The study measured the length of first stage, second stage and total length of labor for women who received their initial intrathecal narcotic injection either in early (between two and four centimeters of cervical dilation) or advanced (between five and ten centimeters of cervical dilation) labor. The results were compared to a control group who received no regional anesthesia to determine if the timing of the initial intrathecal injection increased, decreased or had no effect on length of labor. This study found that the initial timing of intrathecal narcotics had no effect on the length of the first stage of labor. The results showed that the length of the second stage of labor for patients who received intrathecal narcotics in advanced labor increased from 25 minutes to 49 minutes compared to women who received no regional anesthesia. The timing of the first dose of the intrathecal narcotic had no effect on the total length of labor. The results of this study found that intrathecal narcotics do not prolong the length of labor. AV - Order Info: 1399518 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874324&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874314 T1 - The effects of the heat and moisture exchanger on humidity, airway temperature and core body temperature. AU - Delventhal MA Y1 - 1999/01// N1 - Accession Number: 109874314. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Nebulizers and Vaporizers KW - Body Temperature Regulation KW - Airway Management KW - Surgical Patients KW - Anesthesia, General KW - Descriptive Research KW - Inpatients KW - Human SP - 64 p EP - 64 p JO - Effects of the Heat & Moisture Exchanger on Humidity, Airway Temperature & Core Body Temperature JF - Effects of the Heat & Moisture Exchanger on Humidity, Airway Temperature & Core Body Temperature PB - Uniformed Services University of the Health Sciences AB - Findings from several studies have demonstrated that the use of a heat and moisture exchanger increases airway humidity, which in turn increases mean airway temperature and prevents decreases in core body temperature. Few studies however, described the effects of the HME on relative humidity, mean airway temperature and core body temperature. The purpose of this study was to describe the effects of the HME on airway humidity and temperature and core body temperature of anesthetized patients. After induction of general endotracheal anesthesia, 16 subjects received a routine general anesthetic, and were placed on a three liter per minute flow rate of N20/O2 using a standard rebreathing circle system. Forced air warming blanket set at 43 degrees C was placed on each subject, and all intravenous fluids were warmed to body temperature (37 degrees C). Each subject received a Gibeck 2S HUMID-VENT placed between the endotracheal tube and the Y-piece of the breathing circuit. Humidity and temperature of inspired gases along with core body temperatures were recorded at 10 minutes, and then every 30 minutes until the end of the procedure. Fifteen minutes after the insertion of the HME, absolute humidity increased 17%, relative humidity decreased by .29% and core body temperature increased from 35.54 (SD+/-.58) to 35.83 (SD+/-.35). Over time, absolute and relative humidity and mean airway temperature steadily increased. Core body temperature increased from 35.54 (SD+/-.58) to 36.02 (SD+/-.41). The use of an HME may prevent decreases in core body temperature, increase airway humidity and may be associated with a small increase in core body temperature. AV - Order Info: 1399505 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874314&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874341 T1 - Evaluating quality management of acute low back problems provided by Air Force nurse practitioners. AU - Tomlonson LA Y1 - 1999/01// N1 - Accession Number: 109874341. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Low Back Pain -- Therapy KW - Practice Guidelines -- Utilization KW - Nurse Practitioners KW - United States Air Force KW - Surveys KW - Military Nursing KW - Human SP - 56 p EP - 56 p JO - Evaluating Quality Management of Acute Low Back Problems Provided by Air Force Nurse Practitioners JF - Evaluating Quality Management of Acute Low Back Problems Provided by Air Force Nurse Practitioners PB - Uniformed Services University of the Health Sciences AB - Providing appropriate quality health care is essential to the management of patients with acute low back problems (ALBP). In 1994, the Agency for Health Care Policy and Research (AHCPR) published clinical guidelines to assist health care providers when managing acute low back problems in adults. The concept and acceptance of clinical practice guidelines evolved from the necessity to minimize aberrant, ineffective clinical approaches, conserve financial costs, and preserve the quality of health care. There is currently no data available on the adherence of published guidelines in the military or by nurse practitioners. The purpose of this study was to evaluate the clinical practice techniques implemented by Air Force Nurse Practitioners (AFNPs) in the management of ALBP based on AHCPR Clinical Practice Guidelines No. 14. A survey was distributed to 143 family, adult, and women's health nurse practitioners in the United States Air Force. Sixty-four percent of the 57 returned surveys were valid. The survey contained questions focusing on the three key elements specific to the AHCPR guidelines: initial assessment techniques, clinical care methods implemented, and special studies and diagnostic considerations. The overall score of compliance to the AHCPR guidelines was 52.3 %. The knowledge gaps revealed in this study on the management of ALBP in adults by AFNPs is substantial. It is suggested that the AFNP become familiar and implement the guidelines established by the AHCPR to improve their management of patients with ALBP. Adhering to the recommendations based on evidence and expert consensus will ensure quality health care delivery. AV - Order Info: 1399540 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874341&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874344 T1 - Job satisfaction among family nurse practitioners in the United States Air Force. AU - Owings JE Y1 - 1999/01// N1 - Accession Number: 109874344. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. Instrumentation: Measurement of Job Satisfaction (Traynor and Wade). KW - Job Satisfaction -- Evaluation KW - Family Nurse Practitioners KW - Military Nursing KW - Descriptive Research KW - United States Air Force KW - Conceptual Framework KW - Summated Rating Scaling KW - Descriptive Statistics KW - Human SP - 56 p EP - 56 p JO - Job Satisfaction Among Family Nurse Practitioners in the United States Air Force JF - Job Satisfaction Among Family Nurse Practitioners in the United States Air Force PB - Uniformed Services University of the Health Sciences AB - Increasing numbers of Family Nurse Practitioners (FNPs) are being utilized within the Air Force. Nurse Practitioners provide patient education, acute care, and prevention services at lower cost due to the lower cost of training and lower salaries than physicians, without jeopardizing care. Creating an optimal working relationship, can help the new FNP integrate into their new role successfully. The purpose of this descriptive study is to describe and assess the factors affecting job satisfaction among FNPs in the Air Force. The conceptual framework to guide this study is based on Frederick Herzberg's theory of job satisfaction. Identifying the factors affecting job satisfaction, can help team members, supervisors and the new FNPs smoothly transition to the provider role. The entire population of 32 Air Force FNPs were surveyed using the Measurement of Job Satisfaction tool developed by Traynor and Wade. The 44 item tool contains questions related to seven categories: personal, workload, training, standards of care, pay, prospects, and professional support satisfaction. A 5 point Likert scale was used to measure the FNP's responses to each of these categories. Descriptive statistics were used to analyze the demographic data of the subjects regarding age, education, rank, education, clinical setting and years of practice. Study results show that overall Air Force FNPs express a high level of satisfaction. As earlier literature demonstrates, intrinsic factors such as personal satisfaction and quality patient care positively influence job satisfaction. Also salary was found to be the highest dissatisfier. Study results may be helpful to supervisors and FNPs as the role of Nurse Practitioners expand in the Air Force. AV - Order Info: 1399530 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874344&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874333 T1 - Malignant hyperthermia preparation in the United States Air Force. AU - Williams KA Y1 - 1999/01// N1 - Accession Number: 109874333. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Malignant Hyperthermia -- Prevention and Control KW - Hospitals, Military -- United States KW - United States Air Force KW - Surveys KW - Telephone KW - Malignant Hyperthermia KW - Human SP - 51 p EP - 51 p JO - Malignant Hyperthermia Preparation in the United States Air Force JF - Malignant Hyperthermia Preparation in the United States Air Force PB - Uniformed Services University of the Health Sciences AB - Are United States Air Force hospitals prepared to treat a patient undergoing a malignant hyperthermia crisis? Malignant Hyperthermia (MH) is a life threatening syndrome that affects genetically susceptible individuals when exposed to volatile agents or succinylcholine. Patient survival is based on rapidly diagnosing MH, having a treatment plan in place, and having the necessary drugs and equipment available to treat the patient. The Malignant Hyperthermia Association of the United States (MHAUS) has advocated a five step readiness plan for hospitals to be prepared to treat an MH crisis. The results of two previous studies show a large number of hospitals are not fully prepared to handle an MH episode. A survey questionnaire was developed based on MHAUS guidelines perform a quantitative study of USAF hospitals. A telephone interview was conducted with all 39 USAF hospitals in the continental United States and Alaska that provide general surgery and anesthesia. The results showed 100% of the hospitals had a treatment plan in place and the emergency Hotline number to MHAUS was accessible. Also, 100% of the hospitals had an MH treatment cart. The results showed 38 out of 39 hospitals stocked the recommended supply of dantrolene. All of the hospitals fully stocked the ancillary drugs needed when treating MH. All of the hospitals had an ice source and equipment needed to cool the patient during an MH episode. An annual inservice on MH recognition and treatment was performed at 33 out of 39 hospitals. Overall, based on MHAUS standards, USAF hospitals are well prepared with the supplies, equipment and training to treat a patient experiencing an MH crisis. AV - Order Info: 1399543 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874333&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874320 T1 - The operational preparedness of United States Air Force certified registered nurse anesthetists to provide trauma anesthesia. AU - Frank MW Y1 - 1999/01// N1 - Accession Number: 109874320. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Nurse Anesthetists KW - Military Nursing KW - Trauma Nursing KW - Professional Competence KW - Job Experience -- Evaluation KW - United States Air Force KW - Content Validity KW - Data Analysis Software KW - Surveys KW - Human SP - 55 p EP - 55 p JO - Operational Preparedness of United States Air Force Certified Registered Nurse Anesthetists to Provide Trauma Anesthesia JF - Operational Preparedness of United States Air Force Certified Registered Nurse Anesthetists to Provide Trauma Anesthesia PB - Uniformed Services University of the Health Sciences AB - The purpose of military medicine is to care for the injured during wartime. Military Certified Registered Nurse Anesthetists (CRNAs) must expand their role while deployed and be skilled in the management of trauma. Treating traumatically injured patients in Air Force hospitals is limited while working outside of the operational theater. The trauma anesthesia experience of United States Air Force (USAF) CRNAs is presently unknown. The purpose of this study was to determine the experience and training in trauma anesthesia of CRNAs in the United States Air Force, as well as their perceived value of this experience and training. For this study, a fifteen-question survey tool was developed and then reviewed by two CRNA experts for validity. IRB approval was obtained from both the Uniformed Services University of the Health Sciences and the USAF. Active duty CRNAs (N=269) were surveyed by mail about their length of time as a CRNA, the size of medical facility, the frequency of trauma cases, deployment experience to either combat or humanitarian missions, and trauma care experience outside of their military practice or during anesthesia education. The response rate was 60% (163/269). Data were analyzed using the Statistical Package for Social Services to describe the average trauma anesthesia experience of USAF CRNAs. The results showed that most USAF CRNAs have less than five years experience (109/163), and only 22% (37/163) have been deployed. Inadequate training with field anesthesia equipment was reported by 43% (16/37) of those who had been deployed. Twenty-five percent of the respondents practice trauma anesthesia in their military hospital with most doing less than 3 trauma cases per month. Twenty-two percent practice trauma anesthesia outside the military. This study found that CRNAs in the USAF highly value anesthesia experience in trauma centers, and ATLS courses. AV - Order Info: 1399508 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874320&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 107182114 T1 - Exercise adviser. Delayed-onset muscle soreness: work out now, pay later? AU - Ross M Y1 - 1999/01// N1 - Accession Number: 107182114. Language: English. Entry Date: 19990501. Revision Date: 20150711. Publication Type: Journal Article; CEU; consumer/patient teaching materials; exam questions. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 0427461. KW - Muscle Pain KW - Consumer Health Information KW - Education, Continuing (Credit) SP - 107 EP - 10 JO - Physician & Sportsmedicine JF - Physician & Sportsmedicine JA - PHYSICIAN SPORTSMED VL - 27 IS - 1 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd SN - 0091-3847 AD - Physical Therapist and Instructor, Dept of Biology, United States Air Force Academy, Colorado Springs UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107182114&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874315 T1 - Postoperative analgesia using psoas sheath block versus three-in-one block in anterior cruciate ligament reconstruction. AU - Burch CA Y1 - 1999/01// N1 - Accession Number: 109874315. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Analgesics KW - Anterior Cruciate Ligament Reconstruction KW - Postoperative Pain -- Drug Therapy KW - Experimental Studies KW - Human KW - Inpatients KW - Nerve Block KW - Surgical Patients SP - 74 p EP - 74 p JO - Postoperative Analgesia Using Psoas Sheath Block Versus Three-in-one Block in Anterior Cruciate Ligament Reconstruction JF - Postoperative Analgesia Using Psoas Sheath Block Versus Three-in-one Block in Anterior Cruciate Ligament Reconstruction PB - Uniformed Services University of the Health Sciences AB - In this study, the effects of two regional anesthetic techniques on postoperative pain of patients undergoing anterior cruciate ligament reconstruction surgery were described. Patients were assigned the morning of surgery to one of two groups. Subjects in Group A received a psoas sheath and sciatic nerve blocks and subjects in Group B received a three-in-one and sciatic nerve block. Additionally, all subjects received either a propofol infusion for sedation or a general inhalational anesthetic. Sixteen subjects were enrolled, 12 in Group A and four in Group B. Mean time from the end of surgery to the patient's first request for pain medication was 7.7 hours (SD 1.9) for Group A and 11 hours (SD 1.1) for Group B. Mean time to administer the regional nerve blockade for was 15.3 minutes (SD 7.5; range 7-30) and 23.5 minutes (SD 9.9; range 15-25) for Group A and B respectively. The regional techniques for Group A (n=12, 2=no data) resulted in blockade of all nerves for 8 of the 10 (80%) subjects. The regional techniques for Group B (n=4) yielded two cases which no nerves were blocked and two cases where all nerves were blocked. AV - Order Info: 1399502 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874315&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874330 T1 - Prevalence of visible and occult blood on airway management equipment used outside the operating room. AU - Nikkola RJ Y1 - 1999/01// N1 - Accession Number: 109874330. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Anesthetists KW - Airway Management -- Equipment and Supplies KW - Occult Blood KW - Equipment Contamination KW - Crash Carts KW - Operating Rooms KW - Descriptive Research KW - Hospitals, Military KW - Comparative Studies KW - Descriptive Statistics KW - Infection Control KW - United States Occupational Safety and Health Administration KW - Human SP - 69 p EP - 69 p JO - Prevalence of Visible & Occult Blood on Airway Management Equipment Used Outside the Operating Room JF - Prevalence of Visible & Occult Blood on Airway Management Equipment Used Outside the Operating Room PB - Uniformed Services University of the Health Sciences AB - Unintentional transmission of blood-borne pathogens to patients, self, and co-workers is an inherent, but preventable hazard to those who provide anesthesia services. Anesthesia providers, their equipment, and monitors located within the operating room have often been shown to be contaminated with visible or occult blood in addition to potential pathogens. The potential to spread certain blood-borne pathogens such as human immunodeficiency virus (HIV), and hepatitis B & C virus's (HBV, HCV) is a major concern. The purpose of this study was to determine how effective current procedures for cleaning, disinfection, and handling of airway management equipment (AME) stored in emergency crash carts, airway management carts, and airway management bags, located outside the operating room, are for removing blood. An additional purpose was to compare these data with previous studies on such equipment used within the operating room. A descriptive survey was conducted on AME located outside the operating room on seven separate units within a large military medical facility. AME was inspected for visible blood and then tested for occult blood utilizing a modified phenolphthalein test. This study found a 3% incidence of visible blood and an overall prevalence of occult blood to be 17%. These findings are consistent with similar studies that looked at the AME used within the operating room. These data identify lack of compliance of established OSHA and EPA standards regarding high-level disinfection. Improperly cleaned AME continues to be used when performing lifesaving procedures, potentially exposing health care providers and their patients to life threatening infectious diseases. AV - Order Info: 1399527 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874330&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - CHAP AU - Ingraham, Patricia W. AU - Jones, Vernon Dale AD - Alan K Campbell Public Affairs Institute, Syracuse U AD - US Air Force and US Air Force Academy A2 - Frederickson, H. George A2 - Johnston, Jocelyn M. T1 - The Pain of Organizational Change: Managing Reinvention T2 - Public management reform and innovation: Research, theory, and application PB - Tuscaloosa and London: PB - University of Alabama Press; distributed by Chicago Distribution Center Y1 - 1999/// SP - 211 EP - 229 N1 - Accession Number: 0568689; Reviewed Book ISBN: 0-8173-0964-0; 0-8173-0971-3; ; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Collective Volume Article; Update Code: 200107 KW - Bureaucracy; Administrative Processes in Public Organizations; Corruption D73 KW - Public Enterprises; Public-Private Enterprises L32 KW - Organizational Behavior; Transaction Costs; Property Rights D23 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0568689&site=ehost-live&scope=site DP - EBSCOhost DB - ecn ER - TY - THES ID - 109874321 T1 - The relationship between sound levels in the postanesthesia care unit and use of analgesics. AU - Medina MD Y1 - 1999/01// N1 - Accession Number: 109874321. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Post Anesthesia Care Units KW - Noise KW - Analgesics -- Administration and Dosage KW - Postoperative Pain KW - Descriptive Research KW - Time Factors KW - Child, Preschool KW - Child KW - Adolescence KW - Adult KW - Middle Age KW - Aged KW - Inpatients KW - Human SP - 52 p EP - 52 p JO - Relationship Between Sound Levels in the Postanesthesia Care Unit & Use of Analgesics JF - Relationship Between Sound Levels in the Postanesthesia Care Unit & Use of Analgesics PB - Uniformed Services University of the Health Sciences AB - A study investigating whether a relationship exists between sound levels in the postanesthesia care unit (PACU) and the use of analgesics was conducted. Previous studies indicated sound levels in the PACU exceeded federal recommendations, that more analgesics were used during periods of higher sound, and that many of the sounds in higher levels are often under the control of staff. Four beds in a postanesthesia care unit were monitored for sound levels over seven days. A total of 62 patients, ranging in age from 4 to 79 years were admitted to the monitored beds. Sound levels ranged from 43 to 94 dB(A), with average daily sound levels ranging from 51-62 dB(A), exceeding federal recommendations. Patient charts were reviewed to determine the time of analgesic administration. Printouts from the sound level monitors were reviewed to determine the average sound level at 3 and 10-minute periods prior to analgesic administration. More analgesic doses were given at periods following medium and high sound levels that were given at periods following low sound levels. Ten minutes prior to 79% of the analgesics being administered, sound levels were in the medium or high levels. Three minutes prior to 83.7% of the analgesics being administered sound levels were also at medium or high levels. This research supports findings in previous studies on postoperative pain, sound and noise levels, and the use of analgesics AV - Order Info: 1399524 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874321&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874328 T1 - Sedation of pediatric patients in magnetic resonance imaging. AU - Ricks AD Y1 - 1999/01// N1 - Accession Number: 109874328. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Sedation -- In Infancy and Childhood KW - Magnetic Resonance Imaging KW - Ketamine -- Administration and Dosage -- In Infancy and Childhood KW - Midazolam -- Administration and Dosage -- In Infancy and Childhood KW - Atropine -- Administration and Dosage -- In Infancy and Childhood KW - Record Review KW - Retrospective Design KW - Infant, Newborn KW - Infant KW - Child, Preschool KW - Child KW - Human SP - 70 p EP - 70 p JO - Sedation of Pediatric Patients in Magnetic Resonance Imaging JF - Sedation of Pediatric Patients in Magnetic Resonance Imaging PB - Uniformed Services University of the Health Sciences AB - Providing anesthesia to pediatric patients requiring a magnetic resonance imaging presents challenges. The effect of the medication on the pediatric patient's hemodynamic and respiratory system is of most concern. At a midwest medical facility, a combined intramuscular administration of ketamine, midazolam and atropine was used to gain cooperation of pediatric patients during MRI scanning while keeping the patient hemodynamically stable. This study explored this drug combination administered at the midwest facility for pediatric sedation, determining if was safe and effective for pediatric patients undergoing MRI scans. A sample of 51 pediatric charts was reviewed retrospectively. Heart rate, respirations and pulse oximetry were evaluated before and after the combined intramuscular drug combination was given. No significant changes in these variables were noted. The results of this study indicate that this regimen is a safe and effective one. AV - Order Info: 1399533 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874328&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874322 T1 - A simulation study of the effects of operating room noise on the performance of anesthesia providers. AU - Lembo HA Y1 - 1999/01// N1 - Accession Number: 109874322. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Noise KW - Job Performance KW - Anesthesia Nursing KW - Students, Nursing KW - Anesthesia Induction KW - Chi Square Test KW - Simulations KW - Human SP - 67 p EP - 67 p JO - Simulation Study of the Effects of Operating Room Noise on the Performance of Anesthesia Providers JF - Simulation Study of the Effects of Operating Room Noise on the Performance of Anesthesia Providers PB - Uniformed Services University of the Health Sciences AB - The purpose of this study was to add to the current research on the effects of noise and environmental stimuli on provider performance. The secondary purpose of the study was to determine whether using an anesthesia simulator is effective for studying the effects of environmental stimuli, such as noise, on performance. The study was designed using a test- retest format. The subjects were thirteen senior nurse anesthesia residents. Each student was given a scenario and asked to perform a standard induction sequence on the anesthesia simulator. The subjects performed an induction sequence in a quiet, controlled environment and were then asked to return to the simulator a week later to perform a similar scenario in a noisy environment. The average noise levels in the control scenario were 24.8db(A) and the average for the noisy scenario was 50.5 db(A). All scenarios were recorded and analyzed using Chi-Square statistical testing, with a significance level of p<.05. After all scenarios had been completed, the subjects subjectively evaluated the degree of realism that the simulator provided as well as their perceptions of noise in the operating room. Based on the data collected in this study, it could not be concluded that noise had either a positive or negative impact on the performance of anesthesia providers. This study did, however, demonstrate that the use of anesthesia patient simulators is a practical, educational method as performance was improved by repeat training on the simulator. AV - Order Info: 1399520 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874322&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874345 T1 - Use of Ottawa ankle decision rules to evaluate blunt ankle trauma case studies by United States Air Force health care providers. AU - Novak WA Y1 - 1999/01// N1 - Accession Number: 109874345. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Practice Guidelines -- Utilization KW - Ankle Injuries -- Therapy KW - Military Nursing KW - United States Air Force KW - Nurse Practitioners KW - Physician Assistants KW - Descriptive Research KW - Cost Benefit Analysis KW - Human SP - 82 p EP - 82 p JO - Use of Ottawa Ankle Decision Rules to Evaluate Blunt Ankle Trauma Case Studies by United States Air Force Health Care Providers JF - Use of Ottawa Ankle Decision Rules to Evaluate Blunt Ankle Trauma Case Studies by United States Air Force Health Care Providers PB - Uniformed Services University of the Health Sciences AB - Practice guidelines are developed through a formal process incorporating the best scientific evidence of effectiveness with expert opinions. Clinical guidelines like the Ottawa Ankle Rules (OAR) may serve an increasingly important role within the evolving role of nurse practitioners (NPs) and physician assistants (PAs) within the United States Air Force (USAF) health care model called TRICARE. The OAR have been found to be specific and valid decision rules concerning the common problem of blunt ankle trauma (BAT). Few x-rays for this condition are positive for clinically significant fractures. Use of the OAR by USAF NPs and PAs is unknown. The purpose of this descriptive study was to determine if a sample of NPs and PAs are aware of the OAR. Secondly, what clinical information, tests or rules are used by respondents to correctly determine whether or not to x-ray is warranted in written case BAT scenarios. This study asks if there is a theoretical cost benefit in OAR use? Descriptive data were gathered using case scenarios to measure diagnostic accuracy. Data from 29 respondents indicate lack of awareness of the OAR. There was a 1% difference in accuracy between the 18 NPs and 11 PAs in 11 scenarios. A formula applied to the cases of inaccurately ordered x-rays demonstrated a theoretical cost benefit of $1,300 to $3,900. Use of the OAR after a brief education process may improve patient satisfaction, decrease waiting times, and demonstrate cost savings with no increase in rate of missed fractures, or increased provider liability. Use of the OAR may facilitate efficient evaluation of BAT in field conditions. AV - Order Info: 1399528 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874345&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874312 T1 - Variability in the American Society of Anesthesiologists (ASA) Physical Status (PS) Classification Scale. AU - Aronson WL Y1 - 1999/01// N1 - Accession Number: 109874312. Language: English. Entry Date: 20010504. Revision Date: 20150923. Publication Type: Masters Thesis; research. Instrumentation: American Society of Anesthesiologists Physical Status Classification Scale (ASA PS). KW - Anesthesiologists KW - Nurse Anesthetists KW - Health Status -- Evaluation KW - Health Status Indicators KW - Severity of Illness Indices -- Evaluation KW - Descriptive Research KW - Surveys KW - United States Air Force KW - Instrument Validation KW - Surgical Patients KW - Preoperative Period KW - Clinical Assessment Tools KW - Military Personnel KW - Human SP - 129 p EP - 129 p JO - Variability in the American Society of Anesthesiologists (asa) Physical Status (ps) Classification Scale JF - Variability in the American Society of Anesthesiologists (asa) Physical Status (ps) Classification Scale PB - Uniformed Services University of the Health Sciences AB - The ASA PS classification, developed in 1941, is in worldwide use today by anesthesia providers as a means to assess patient preoperative PS. The results from three studies (Haynes & Lawler, 1995; Owens, Felts, & Spitznagel, 1978; Ranta, Hynynen, & Tammisto, 1997.) suggest variability between anesthesiologists in their use of this instrument. This descriptive study was designed to explore the possible sources of variability between both anesthesiologists and nurse anesthetists and between military and non-military providers in their use of the ASA classification. As with the previous studies, great variability between providers in assignment of ASA scores to written hypothetical patient scenarios was demonstrated. There was no statistically significant difference between anesthesiologists and nurse anesthetists or between military and non-military providers. Possible sources for this variability identified in this study include: smoking, pregnancy, nature of the surgery, potential difficult airway and acute injury. The results of this study suggest the ASA classification is unreliable when applied to written scenarios and should not be used for administrative or policy determination or for the reimbursement of anesthesia services. It should be revised to a more objective, reliable and useful instrument by a multidisciplinary team. AV - Order Info: 1399497 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874312&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 1999-15628-003 AN - 1999-15628-003 AU - McNeese, Michael D. AU - Bautsch, Holly S. AU - Narayanan, S. T1 - A framework for cognitive field studies. JF - International Journal of Cognitive Ergonomics JO - International Journal of Cognitive Ergonomics JA - Int J Cogn Ergon Y1 - 1999/// VL - 3 IS - 4 SP - 307 EP - 331 CY - US PB - Lawrence Erlbaum SN - 1088-6362 SN - 1532-7566 N1 - Accession Number: 1999-15628-003. Partial author list: First Author & Affiliation: McNeese, Michael D.; Wright-Patterson Air Force Base, Air Force Research Laboratory, Crew Systems Interface Division, OH, US. Release Date: 20000201. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Ability; Cognitive Psychology; Flight Simulation; Taxonomies. Classification: Cognitive Processes (2340). Population: Human (10). References Available: Y. Page Count: 25. Issue Publication Date: 1999. AB - Presented an integrative framework taxonomy to identify, define and enact research and design tradeoffs according to various constraints that limit choices an analyst must make in the study of cognitive systems. Cognitive field studies are useful in understanding human cognitive activities in naturalistic settings and are essential in effectively designing human-system integration in complex systems. Several methodological challenges confront a researcher conducting the study of cognitive systems in context. Decisions need to be made regarding the field research experimental world, knowledge acquisition methods, representational schemes, and evaluative procedures. These decisions involve tradeoffs based on goals of the research, domain characteristics, and task constraints. This article proposes an integrative framework for cognitive field research, reviews several studies in the literature, and highlights decision alternatives in cognitive field research in the context of the proposed framework. The framework is also applied to the case study of fighter aircraft systems and methodological issues encountered in the research are briefly outlined. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - integrative framework taxonomy for cognitive field studies KW - simulation in comparison to human performance KW - 1999 KW - Cognitive Ability KW - Cognitive Psychology KW - Flight Simulation KW - Taxonomies KW - 1999 DO - 10.1207/s15327566ijce0304_3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1999-15628-003&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - BOOK ID - 1999-04234-000 AN - 1999-04234-000 AU - Barker, James R. T1 - The discipline of teamwork: Participation and concertive control. Y1 - 1999/// CY - Thousand Oaks, CA, US PB - Sage Publications, Inc SN - 0-7619-0369-0 SN - 0-7619-0370-4 N1 - Accession Number: 1999-04234-000. Partial author list: First Author & Affiliation: Barker, James R.; US Air Force Academy, Dept of Management, CO, US. Release Date: 19991201. Correction Date: 20151207. Publication Type: Book (0200), Authored Book (0240). Format Covered: Print. ISBN: 0-7619-0369-0, Hardcover; 0-7619-0370-4, Paperback. Language: English. Major Descriptor: Industrial and Organizational Psychology; Organizational Climate; Organizational Structure; Social Psychology; Teams. Minor Descriptor: Organizations; Consequence. Classification: Management & Management Training (3640). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). Page Count: 207. AB - Recent years have brought team-based and collaborative management to the forefront of our organizational leadership. Teamwork has permeated all aspects of the work world and continues to gain momentum. In this book, the author explores the social consequences of this participatory work environment. Writing from the team member perspective, the author analyzes how team members create a 'discipline' of teamwork: a recurring, aggressive, and voracious way of working together. He focuses on the human cost of participation and the effects of this discipline on team members. He details how the discipline develops, matures, and creates social consequences for organizational participants, and provides insight into how we can make teamwork a positive experience for all involved. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - social consequences of working in team-based organizations KW - 1999 KW - Industrial and Organizational Psychology KW - Organizational Climate KW - Organizational Structure KW - Social Psychology KW - Teams KW - Organizations KW - Consequence KW - 1999 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1999-04234-000&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - GEN AU - Heppard, Kurt A. T1 - High Expectations, Supportiveness, and the Management Hall of Fame A Conversation With Raymond E. Miles. JO - Journal of Management Inquiry JF - Journal of Management Inquiry Y1 - 1998/12// VL - 7 IS - 4 M3 - Interview SP - 294 SN - 10564926 AB - This article presents an interview with Raymond E. Miles, one of the pioneers in the field of management. Miles began his academic career at the University of California, Berkeley, in 1963 and has been teaching and conducting research there ever since. In the early and mid-1960s, his work focused primarily on differentiating the human relations and human resource models of participative leadership. In the late 1960s and early 1970s, he examined ways that human potential in organizations could be unlocked through employee participation programs, training, motivation, and organization design. According to Miles, he learned lot about leadership and about motivation from his family experience. His family always expected a lot of him and pushed him ahead while being incredibly supportive. He remember playing on the front driveways of the service station and helping his father close up the station when he was just a little kid. He got a strong work ethic from his father and mother and almost unbelievable love. KW - MILES, Raymond E. KW - INDUSTRIAL management KW - LEADERSHIP KW - MANAGEMENT science KW - BUSINESS education KW - UNITED States N1 - Accession Number: 1405558; Heppard, Kurt A. 1; Source Information: Dec98, Vol. 7 Issue 4, p294; Subject: MILES, Raymond E.; Subject: INDUSTRIAL management; Subject: LEADERSHIP; Subject: MANAGEMENT science; Subject: BUSINESS education; Geographic Terms: UNITED States; Number of Pages: 11p; Document Type: Interview; Full Text Word Count: 7994 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=1405558&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 1999-13788-004 AN - 1999-13788-004 AU - Hendrix, William H. AU - Robbins, Tina AU - Miller, Janis AU - Summers, Timothy P. T1 - Effects of procedural and distributive justice on factors predictive of turnover. JF - Journal of Social Behavior & Personality JO - Journal of Social Behavior & Personality JA - J Soc Behav Pers Y1 - 1998/12// VL - 13 IS - 4 SP - 611 EP - 632 CY - US PB - Select Press SN - 0886-1641 N1 - Accession Number: 1999-13788-004. Partial author list: First Author & Affiliation: Hendrix, William H.; US Air Force Academy, Dept of Behavioral Science & Leadership, CO, US. Release Date: 19990601. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Employee Attitudes; Job Performance; Job Satisfaction; Justice; Organizational Commitment. Minor Descriptor: Employee Absenteeism; Employee Turnover; Group Performance; Intention; Motivation. Classification: Personnel Attitudes & Job Satisfaction (3650). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360); Aged (65 yrs & older) (380). Methodology: Empirical Study. Page Count: 22. Issue Publication Date: Dec, 1998. AB - Developed and tested a model linking justice perceptions to a series of variables leading to turnover. 310 full-time employees (aged 18–70 yrs) completed a justice-perception scale and measures of intrinsic job satisfaction, organizational commitment, attendance motivation, work-group performance, turnover intentions, and turnover. Positive procedural and distributive justice perceptions were associated with increased intrinsic and extrinsic job satisfaction and organizational commitment. Procedural justice perceptions were positively related to perceptions of work-group performance. Distributive justice perceptions were negatively related to turnover intentions. Actual turnover was directly influenced by only one factor, turnover intentions, and indirectly by all variables in the model except for work-group performance perceptions and extrinsic job satisfaction. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - procedural vs distributive justice perceptions KW - job satisfaction & organizational commitment & work group performance & attendance motivation & turnover intention & turnover KW - 18–70 yr old employees KW - 1998 KW - Employee Attitudes KW - Job Performance KW - Job Satisfaction KW - Justice KW - Organizational Commitment KW - Employee Absenteeism KW - Employee Turnover KW - Group Performance KW - Intention KW - Motivation KW - 1998 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1999-13788-004&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 107156341 T1 - Simultaneous palpation of the craniosacral rate at the head and feet: intrarater and interrater reliability and rate comparisons. AU - Rogers JS AU - Witt PL AU - Gross MT AU - Hacke JD AU - Genova PA Y1 - 1998/11// N1 - Accession Number: 107156341. Language: English. Entry Date: 19990101. Revision Date: 20150820. Publication Type: Journal Article; research; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 0022623. KW - Palpation KW - Cerebrospinal Fluid -- Physiology KW - Alternative Therapies KW - Skull KW - Sacrum KW - Sensitivity and Specificity KW - Reproducibility of Results KW - Repeated Measures KW - Interrater Reliability KW - Data Analysis Software KW - Descriptive Statistics KW - Intraclass Correlation Coefficient KW - Analysis of Variance KW - Adult KW - Middle Age KW - Female KW - Male KW - Human SP - 1175 EP - 1185 JO - Physical Therapy JF - Physical Therapy JA - PHYS THER VL - 78 IS - 11 CY - Alexandria, Virginia PB - American Physical Therapy Association AB - BACKGROUND AND PURPOSE: The main purpose of this study was to determine the interrater and intrarater reliability of measurements obtained during palpation of the craniosacral rate at the head and feet. Palpated craniosacral rates of head and feet measured simultaneously were also compared. Subjects. Twenty-eight adult subjects and 2 craniosacral examiners participated in the study. METHODS: A within-subjects repeated-measures design was used. A standard cubicle privacy curtain, hung over the subject's waist, was used to prevent the examiners from seeing each other. RESULTS: Interrater intraclass correlation coefficients (ICCs) were .08 at the head and .19 at the feet. Intrarater ICCs ranged from .18 to .30. Craniosacral rates simultaneously palpated at the head and feet were different. CONCLUSION AND DISCUSSION: The results did not support the theories that underlie craniosacral therapy or claims that craniosacral motion can be palpated reliably. SN - 0031-9023 AD - Chief, US Air Force Academy Cadet Physical Therapy Clinic, 10 MDG/SGPY, US Air Force Academy, CO 80840; e-mail: rogersjs.sgo@usafa.af.mil U2 - PMID: 9806622. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107156341&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Newton, Harry N. AU - Barnhart, Cynthia AU - Vance, Pamela H. T1 - Constructing Railroad Blocking Plans to Minimize Handling Costs[*][1]. JO - Transportation Science JF - Transportation Science Y1 - 1998/11// VL - 32 IS - 4 M3 - Article SP - 330 PB - INFORMS: Institute for Operations Research SN - 00411655 AB - On major domestic railroads, a typical general merchandise shipment may pass through many classification yards on its route from origin to destination. At these yards, the incoming traffic, which may consist of a number of individual shipments, is reclassified (sorted and grouped together) to be placed on outgoing trains. Each reclassification incurs costs due to handling and delay. To prevent shipments from being reclassified at every yard they pass through, several shipments may be grouped together to form a block. A block has associated with an origin-destination pair that may or may not be the origin or destination of any of the individual cars contained in the block. The objective of the railroad blocking problem is to choose which blocks to build at each yard and to assign sequences of blocks to deliver each shipment to minimize total mileage, handling, and delay costs. We model the railroad blocking problem as a network design problem in which yards are represented by nodes and blocks by arcs. Our model is intended as a strategic decision-making tool. We develop a column generation, branch-and- bound algorithm in which attractive paths for each shipment are generated by solving a shortest path problem. Our solution approach is unique in constraining the classification resources of each yard and simultaneously solving for different priority classes of shipments. We implement our algorithm and find near-optimal solutions in about one hour for the blocking problem of a large domestic railroad, in which the paths that shipments may take in the physical network are restricted. The resulting network design problem has 150 nodes, 1300 commodities, and 6800 possible arcs (blocks). We test the robustness of our solution on 19 test instances that are variations of the data for the real-world problems. If shipments are restricted to following one of a limited number of paths in the rail network, then, in four hours or less, our algorithm finds solutions within 0.4% of optimal for all test cases. Furthermore, the solutions obtained are no more than 3.9% from optimal even if all possible paths are allowed. [ABSTRACT FROM AUTHOR] AB - Copyright of Transportation Science is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAILROADS KW - INTEGER programming KW - SHIPMENT of goods KW - COST control KW - DECISION making KW - ALGORITHMS KW - COMMERCIAL products N1 - Accession Number: 3088859; Newton, Harry N. 1; Barnhart, Cynthia 2; Vance, Pamela H. 3; Affiliations: 1: Department of Mathematical Sciences, United States Air Force Academy, USAF Academy, Colorado 80840.; 2: Department of Civil and Environmental Engineering, M.I.T., Cambridge, Massachusetts 02139.; 3: Goizueta Business School, Emory University, Atlanta, Georgia 30322.; Issue Info: Nov98, Vol. 32 Issue 4, p330; Thesaurus Term: RAILROADS; Thesaurus Term: INTEGER programming; Thesaurus Term: SHIPMENT of goods; Thesaurus Term: COST control; Thesaurus Term: DECISION making; Thesaurus Term: ALGORITHMS; Thesaurus Term: COMMERCIAL products; NAICS/Industry Codes: 523140 Commodity Contracts Brokerage; NAICS/Industry Codes: 523130 Commodity Contracts Dealing; NAICS/Industry Codes: 482114 Passenger rail transportation; NAICS/Industry Codes: 237990 Other Heavy and Civil Engineering Construction; NAICS/Industry Codes: 482112 Short Line Railroads; NAICS/Industry Codes: 482111 Line-Haul Railroads; Number of Pages: 16p; Illustrations: 5 Diagrams, 6 Charts, 1 Map; Document Type: Article; Full Text Word Count: 9685 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=3088859&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Alexeev, Michael V. AU - Sikorra, Raymond C. AD - IN U AD - US Air Force Academy T1 - Comparing Post-Cold War Military Conversion in the United States and Russia JO - Contemporary Economic Policy JF - Contemporary Economic Policy Y1 - 1998/10// VL - 16 IS - 4 SP - 499 EP - 510 SN - 10743529 N1 - Accession Number: 0485260; Keywords: Military; War; Geographic Descriptors: U.S.; Russian Federation; Geographic Region: Northern America; Europe; Asia; Publication Type: Journal Article; Update Code: 199904 KW - National Security and War H56 KW - Public Sector Labor Markets J45 KW - Socialist Systems and Transitional Economies: Performance and Prospects P27 KW - Socialist Enterprises and Their Transitions P31 L3 - http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291465-7287 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0485260&site=ehost-live&scope=site UR - http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291465-7287 DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Davies, Michaela AU - Stankov, Lazar AU - Roberts, Richard D. T1 - Emotional Intelligence: In Search of an Elusive Construct. JO - Journal of Personality & Social Psychology JF - Journal of Personality & Social Psychology Y1 - 1998/10// VL - 75 IS - 4 M3 - Article SP - 989 EP - 1015 SN - 00223514 AB - The view that emotional intelligence should be included within the traditional cognitive abilities framework was explored in 3 studies (total N = 530) by investigating the relations among measures of emotional intelligence, traditional human cognitive abilities, and personality. The studies suggest that the status of the emotional intelligence construct is limited by measurement properties of its tests. Measures based on consensual scoring exhibited low reliability. Self-report measures had salient loadings on well-established personality factors, indicating a lack of divergent validity. These data provide controvertible evidence for the existence of a separate Emotion Perception factor that (perhaps) represents the ability to monitor another individual's emotions. This factor is narrower than that postulated within current models of emotional intelligence. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Personality & Social Psychology is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMOTIONAL intelligence KW - COGNITION KW - PERSONALITY KW - PSYCHOLOGICAL tests KW - SOCIAL psychology N1 - Accession Number: 1313871; Davies, Michaela 1; Stankov, Lazar 1; Email Address: lazar@psych.usyd.edu.au; Roberts, Richard D. 2; Affiliations: 1: University of Sydney; 2: National Research Council and Air Force Research Laboratory, Brooks Air Force Base; Issue Info: Oct98, Vol. 75 Issue 4, p989; Subject Term: EMOTIONAL intelligence; Subject Term: COGNITION; Subject Term: PERSONALITY; Subject Term: PSYCHOLOGICAL tests; Subject Term: SOCIAL psychology; Number of Pages: 27p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=1313871&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Parnell, Gregory S. AU - Conley, Harry W. AU - Jackson, Jack A. AU - Lehmkuhl, Lee J. AU - Andrew, John M. T1 - Foundations 2025: A Value Model for Evaluating Future Air and Space Forces. JO - Management Science JF - Management Science Y1 - 1998/10// VL - 44 IS - 10 M3 - Article SP - 1336 EP - 1350 PB - INFORMS: Institute for Operations Research SN - 00251909 AB - Air Force 2025 was a study directed by the Chief of Staff of the United States Air Force to identify key system concepts and technologies for achieving air and space dominance in the year 2025. The study was a large effort in which over 200 military experts participated for more than one year. We developed a Value-Focused Thinking model, which we used to evaluate which futuristic system concepts have the greatest potential to ensure future U.S. air and space dominance. We named the value model Foundations 2025 because it represented a return to the basics of air and space dominance. We used the "silver standard" approach for value hierarchy development. The participants identified key verbs to describe tasks that must be performed in 2025 to ensure air and space dominance. The value hierarchy was developed bottom-up by aggregating these verbs into higher order tasks using affinity diagrams. Using the value hierarchy, we used multiattribute decision analysis techniques to develop an additive value model with 134 attributes. The Foundations 2025 value model was successfully used to score 43 futuristic system concepts and provide insights about the most promising system concepts and technologies. The analysis results directly supported the study director and the senior leadership of the United States Air Force. [ABSTRACT FROM AUTHOR] AB - Copyright of Management Science is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE industrialization KW - MULTIPLE criteria decision making KW - DECISION making KW - DECISION theory KW - TECHNOLOGICAL innovations KW - SYSTEM analysis KW - MATHEMATICAL models KW - ASTRONAUTICS KW - SPACE sciences KW - AIR forces KW - UNITED States KW - Decision Analysis KW - Multiattribute decision analysis KW - Value-Focused Thinking KW - UNITED States. Air Force N1 - Accession Number: 2561650; Parnell, Gregory S. 1; Conley, Harry W. 2; Jackson, Jack A. 3; Lehmkuhl, Lee J. 4; Andrew, John M. 5; Affiliations: 1: Department of Mathematical Sciences, Virginia Commonwealth University, Richmond, Virginia 23284-2014 & Toffler Associates; 2: Joint Simulation System Program Office, Orlando, Florida 32826.; 3: AFIT/ENS, Wright-Patterson Air Force Base, Ohio 45433-7765.; 4: Assistant Professor of Mathematical Sciences, HQ USAFA/DFMS, United States Air Force Academy Colorado 80840-6252.; 5: Air Force Agency for Modeling and Simulation, Orlando, Florida 32826-32 76.; Issue Info: Oct98, Vol. 44 Issue 10, p1336; Thesaurus Term: SPACE industrialization; Thesaurus Term: MULTIPLE criteria decision making; Thesaurus Term: DECISION making; Thesaurus Term: DECISION theory; Thesaurus Term: TECHNOLOGICAL innovations; Thesaurus Term: SYSTEM analysis; Thesaurus Term: MATHEMATICAL models; Subject Term: ASTRONAUTICS; Subject Term: SPACE sciences; Subject Term: AIR forces; Subject: UNITED States; Author-Supplied Keyword: Decision Analysis; Author-Supplied Keyword: Multiattribute decision analysis; Author-Supplied Keyword: Value-Focused Thinking ; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 928110 National Security; Number of Pages: 15p; Illustrations: 8 Diagrams, 1 Chart, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ent&AN=2561650&site=ehost-live&scope=site DP - EBSCOhost DB - ent ER - TY - JOUR AU - Snow, Michael P. AU - Williges, Robert C. AU - Snow, M P AU - Williges, R C T1 - Empirical models based on free-modulus magnitude estimation of perceived presence in virtual environments. JO - Human Factors JF - Human Factors Y1 - 1998/09// VL - 40 IS - 3 M3 - journal article SP - 386 EP - 402 SN - 00187208 AB - A series of 3 studies was conducted to test free-modulus magnitude estimation as a measure of perceived presence in virtual environments (VEs) and to model the first- and second-order effects of 11 VE system parameters on perceived presence across 5 subtasks. Sequential experimentation techniques were used to build 4 empirical models using polynomial regression. An integrated empirical model of data combined across 2 experiments demonstrated that all significant factors had a positive effect on perceived presence. Three of these parameters--field of view, sound, and head tracking--had almost 3 times as much influence on presence than the other 4 significant parameters, which were visual display resolution, texture mapping, stereopsis, and scene update rate. Sequential experimentation was an efficient tool for building empirical models of perceived presence, but the subjective nature of this phenomenon and individual differences made data bridging across sequential studies problematic. It was concluded that magnitude estimation is a useful measure of perceived presence, and the resulting polynomial regression models can be used to facilitate VE system design decisions. This research has broad application in the selection and design of VE system components and overall design of VE systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Virtual machine systems KW - Perception KW - Virtual reality N1 - Accession Number: 1379234; Snow, Michael P.; Williges, Robert C.; Snow, M P 1; Williges, R C; Affiliations: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7521, USA; Issue Info: Sep1998, Vol. 40 Issue 3, p386; Subject Term: Virtual machine systems; Subject Term: Perception; Subject Term: Virtual reality; Number of Pages: 17p; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=1379234&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Abadi, Jacob T1 - THE SINO-INDIAN CONFLICT OF 1962--A TEST CASE FOR INDIA'S POLICY OF NON-ALIGNMENT. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 1998///Fall98 VL - 15 IS - 2 M3 - Article SP - 11 EP - 29 SN - 87553449 AB - Prime Minister Jawaharlal Nehru adopted a policy of nonalignment as an expression of Indian pride and independence, but the policy failed the test of the Sino-Indian conflict because India had miscalculated China's aggression, and other nonaligned countries such as Egypt and Kenya refused to help India. KW - SINO-Indian Border Dispute, 1957- KW - NONALIGNMENT KW - INTERNATIONAL relations KW - COLD War, 1945-1989 KW - WORLD politics -- 1945-1989 KW - MILITARY assistance KW - INDIA -- Politics & government KW - WAR KW - INDIA KW - CHINA KW - NEHRU, Jawaharlal, 1889-1964 N1 - Accession Number: 1388367; Abadi, Jacob 1; Affiliations: 1 : Associate Professor of History, United States Air Force Academy. Colorado Springs, CO 80918; Source Info: Fall98, Vol. 15 Issue 2, p11; Historical Period: 1950 to 1962; Subject Term: SINO-Indian Border Dispute, 1957-; Subject Term: NONALIGNMENT; Subject Term: INTERNATIONAL relations; Subject Term: COLD War, 1945-1989; Subject Term: WORLD politics -- 1945-1989; Subject Term: MILITARY assistance; Subject Term: INDIA -- Politics & government; Subject Term: WAR; Subject: INDIA; Subject: CHINA; Number of Pages: 19p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hia&AN=1388367&site=ehost-live&scope=site DP - EBSCOhost DB - hia ER - TY - JOUR ID - 1998-10259-004 AN - 1998-10259-004 AU - Jones, Steven K. AU - Frisch, Deborah AU - Yurak, Tricia J. AU - Kim, Eric T1 - Choices and opportunities: Another effect of framing on decisions. JF - Journal of Behavioral Decision Making JO - Journal of Behavioral Decision Making JA - J Behav Decis Mak Y1 - 1998/09// VL - 11 IS - 3 SP - 211 EP - 226 CY - US PB - John Wiley & Sons SN - 0894-3257 SN - 1099-0771 N1 - Accession Number: 1998-10259-004. Partial author list: First Author & Affiliation: Jones, Steven K.; US Air Force Academy, Dept of Behvioral Sciences & Leadership, USAF Academy, CO, US. Release Date: 19980901. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Attitudes; Decision Making. Classification: Cognitive Processes (2340). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Methodology: Empirical Study. Page Count: 16. Issue Publication Date: Sep, 1998. AB - Explored the perceived differences between 'choices' and 'opportunities' in 4 studies. The authors proposed that people focus their attention on those aspects of the decision problem which are explicitly represented, and tend to pay less attention to those aspects of the problem which are represented only implicitly. Ss in all studies consisted of male and female undergraduates, 133 in Exp 1, 160 in Exp 2, 144 in Exp 3, and 55 in Exp 4. Ss were asked to rate decisions in a variety of contexts as either 'choices' or 'opportunities.' The results of Studies 1 and 2 show that college students view many of the decisions they typically face as opportunities, rather than choices. Further, the results of Study 2 suggest that the frame students adopt is systematically related to the preferences they express. The latter finding led to Studies 3 and 4, the results of which showed that preferences can be influenced by encouraging people to adopt one decision frame rather than another. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - perception of problem as choice or opportunity KW - decision making KW - college students KW - 1998 KW - Attitudes KW - Decision Making KW - 1998 DO - 10.1002/(SICI)1099-0771(199809)11:3<211::AID-BDM298>3.0.CO;2-O UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1998-10259-004&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Donet, Chuck T1 - Space-vehicle battery. JO - Design News JF - Design News Y1 - 1998/06/22/ VL - 54 IS - 12 M3 - Article SP - 76 SN - 00119407 AB - Details the space-vehicle battery designed Chuck Donet of the United States Air Force Laboratory. Components of the battery; Electricity produced by the battery. KW - ELECTRIC batteries KW - DESIGN KW - UNITED States. Air Force N1 - Accession Number: 855331; Donet, Chuck 1; Affiliations: 1: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Ave. S.E., Kirtland AFB, NM 87117-5776; (505) 846-4899.; Issue Info: 6/22/98, Vol. 54 Issue 12, p76; Subject Term: ELECTRIC batteries; Subject Term: DESIGN ; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 335910 Battery manufacturing; NAICS/Industry Codes: 418990 All other merchant wholesalers; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 928110 National Security; Number of Pages: 3/5p; Illustrations: 1 Diagram; Document Type: Article; Full Text Word Count: 143 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=855331&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Shute, Valerie J. AU - Gawlick, Lisa A. AU - Gluck, Kevin A. AU - Shute, V J AU - Gawlick, L A AU - Gluck, K A T1 - Effects of practice and learner control on short- and long-term gain and efficiency. JO - Human Factors JF - Human Factors Y1 - 1998/06// VL - 40 IS - 2 M3 - journal article SP - 296 EP - 310 SN - 00187208 AB - This study investigated the effects of practice opportunities and learner control on short- and long-term learning from a computer-based introductory statistics curriculum. In all, 380 participants were assigned to one of five conditions. The first four conditions differed in terms of the number of problems to solve per problem set. The fifth condition allowed learners to choose the amount of practice. A subset (n = 120) of the original participants returned for testing following a six-month interval. Overall, the fixed-practice conditions showed learning gains that varied in relation to the amount of practice (i.e., more was better). The data from the learner-control condition was unexpected, showing learning gains comparable with the most extended practice condition yet the fastest tutor-completion times. We discuss implications of these findings in relation to the design of efficacious instruction. Actual or potential applications of this research include the modification of computer-based instruction that can enhance individuals' learning efficiency and outcome scores. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Learning KW - Education and Work Preparation KW - STATISTICS INSTRUCTION N1 - Accession Number: 996791; Shute, Valerie J.; Gawlick, Lisa A.; Gluck, Kevin A.; Shute, V J 1; Gawlick, L A; Gluck, K A; Affiliations: 1: U.S. Air Force Research Laboratory, Brooks Air Force Base, Texas 78236-5507, USA; Issue Info: Jun1998, Vol. 40 Issue 2, p296; Subject Term: Learning; Author-Supplied Keyword: Education and Work Preparation; Author-Supplied Keyword: STATISTICS INSTRUCTION; Number of Pages: 15p; Illustrations: 2 Charts, 7 Graphs; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=996791&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 107298642 T1 - Resistance training with older populations: justifications, benefits, protocol. AU - Hedrick A Y1 - 1998/04//1998 Apr N1 - Accession Number: 107298642. Language: English. Entry Date: 19981201. Revision Date: 20150711. Publication Type: Journal Article; CEU; exam questions; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 9433793. KW - Muscle Strengthening -- In Old Age KW - Education, Continuing (Credit) KW - Muscular Atrophy -- In Old Age KW - Muscle Strength -- In Old Age KW - Muscles -- In Old Age KW - Adipose Tissue -- In Old Age KW - Frail Elderly KW - Physical Mobility -- In Old Age KW - Bone Density -- In Old Age KW - Psychological Well-Being -- In Old Age KW - Physical Activity -- Psychosocial Factors -- In Old Age KW - Blood Pressure -- In Old Age KW - Aging KW - Muscle Strengthening -- Adverse Effects -- In Old Age KW - Weight Lifting -- In Old Age KW - Aged SP - 32 EP - 27 JO - Strength & Conditioning JF - Strength & Conditioning JA - STRENGTH CONDITION VL - 20 IS - 2 CY - Colorado Springs, Colorado PB - National Strength & Conditioning Association SN - 1073-6840 AD - Assistant Strength and Conditioning Coach, US Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107298642&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 1998-00789-019 AN - 1998-00789-019 AU - Dominguez, Cynthia O. AU - Scherer, Robert F. T1 - Dimensionality of the job-related tension index: Factor stability between two samples of women in the US public sector. JF - The Journal of Social Psychology JO - The Journal of Social Psychology JA - J Soc Psychol Y1 - 1998/02// VL - 138 IS - 1 SP - 139 EP - 142 CY - US PB - Heldref Publications SN - 0022-4545 SN - 1940-1183 N1 - Accession Number: 1998-00789-019. PMID: 9517319 Partial author list: First Author & Affiliation: Dominguez, Cynthia O.; United States Air Force, Wright-Patterson, Air Force Base, US. Other Publishers: Taylor & Francis. Release Date: 19980501. Correction Date: 20090907. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Factor Structure; Human Females; Measurement; Occupational Stress. Classification: Occupational & Employment Testing (2228); Personnel Attitudes & Job Satisfaction (3650). Population: Human (10); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Thirties (30-39 yrs) (340). Methodology: Empirical Study. Page Count: 4. Issue Publication Date: Feb, 1998. AB - Compared the factor structure of the Job-Related Tension Index (JRTI; R. L. Kahn et al, 1964) in a population a 419 adult females (aged 36 yrs and older) with the R. E. Rogers et al (1994) factor structure with another sample of females. The results provide support for the stability of the factor structure of the JRTI when used with samples of women. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - factor stability of the Job-Related Tension Index KW - adult females KW - 1998 KW - Factor Structure KW - Human Females KW - Measurement KW - Occupational Stress KW - 1998 DO - 10.1080/00224549809600366 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1998-00789-019&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 107147633 T1 - Postservice mortality of US Air Force veterans occupationally exposed to herbicides in Vietnam: 15-year follow-up. AU - Michalek JE AU - Ketchum NS AU - Akhtar FZ Y1 - 1998/01/18/ N1 - Accession Number: 107147633. Language: English. Entry Date: 20001201. Revision Date: 20150711. Publication Type: Journal Article; research; tables/charts. Journal Subset: Biomedical; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; Public Health; USA. NLM UID: 7910653. KW - Herbicides -- Adverse Effects KW - Occupational Diseases -- Mortality KW - Occupational Exposure -- Adverse Effects KW - Veterans KW - Prospective Studies KW - Vietnam KW - Confidence Intervals KW - Middle Age KW - Aged KW - Male KW - Human SP - 786 EP - 792 JO - American Journal of Epidemiology JF - American Journal of Epidemiology JA - AM J EPIDEMIOL VL - 148 IS - 8 PB - Oxford University Press / USA AB - The US Air Force continues to assess the mortality of veterans of Operation Ranch Hand, the unit responsible for aerially spraying herbicides in Vietnam. The authors of this study found that the cumulative all-cause mortality experience of these veterans was not different from that expected (standardized mortality ratio (SMR) = 1.0). Overall, cause-specific mortality did not differ from that expected regarding deaths from accidents, cancer, or circulatory system diseases, but the authors found that there was an increased number of deaths due to digestive diseases (SMR = 1.7, 95% confidence interval (CI) 0.9-3.2). When analyzing by military occupation, they found an increase in the number of deaths caused by circulatory system diseases (SMR = 1.5, 95% CI 1.0-2.2) among enlisted ground personnel, the subgroup with the highest dioxin levels. Most of the increase in the number of deaths from digestive diseases was caused by chronic liver disease and cirrhosis, and more than half of the increase in the number of deaths from circulatory system diseases was a result of atherosclerotic heart disease. In the subgroup of Ranch Hand veterans who had survived more than 20 years since their military service in Southeast Asia, the authors found no significant increase in the risk of death due to cancer at all sites (SMR = 1.1) and a nonsignificant increase in the number of deaths due to cancers of the bronchus and lung (SMR = 1.3). SN - 0002-9262 AD - Air Force Research Laboratory/HEDB, 2606 Doolittle Road, Building 807, Brooks Air Force Base, TX 78235-5250 U2 - PMID: 9786233. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107147633&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874026 T1 - The active duty primigravada's perception of prenatal care in the military health care system. AU - Brady VL Y1 - 1998/01// N1 - Accession Number: 109874026. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Military Medicine -- Evaluation KW - Patient Satisfaction -- Evaluation KW - Prenatal Care KW - Active Duty Personnel KW - Primiparas KW - Perception KW - Qualitative Studies KW - Convenience Sample KW - Descriptive Research KW - Pilot Studies KW - Pregnancy KW - Female KW - Human SP - 1 p EP - 1 p JO - Active Duty Primigravada's Perception of Prenatal Care in the Military Health Care System JF - Active Duty Primigravada's Perception of Prenatal Care in the Military Health Care System PB - Uniformed Services University of the Health Sciences AB - The goal of the military health care system is to maintain the fighting strength of the military services by assuring the continued health of the active duty members and their families. High quality, comprehensive care is the best way to accomplish this goal. Patient satisfaction and health status are outcomes of health care services. They are also a measure of its quality. An area of interest for quality improvement is prenatal care. In this study a qualitative descriptive design using the active duty primigravada as the population of interest was used to explore perceptions of and satisfaction with prenatal care in the military health care system. The researcher used a convenience sample of 6 active duty primigravadas who were still within the first three months of the postpartum period. Data analysis utilized the qualitative methods of categorizing and clustering as presented by Burns and Grove. Four theme categories emerged from the data: (1) One Provider, (1A) developing a relationship, (1B) Provider Concern, (2) Need for Information, (2A) Importance of Prenatal Classes, (2B) Greater Education and Support for Breastfeeding, (3) Preparation for Childbirth, and (4) Parental Role. Significant statements from the participants were used to illustrate each theme more fully. The findings of this pilot study showed that, for the most part, active duty first time mothers are very satisfied with the care received in the military health care system, at least those who received care in the family practice setting. This potentially has implications for the most appropriate setting for uncomplicated, ambulatory obstetrical care. Because of vast differences in health care delivery at the various types of military health care facilities, it would be helpful to repeat this study at various sites before drawing any conclusions. AV - Order Info: 1393313 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874026&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 107276369 T1 - The natural history of bone bruises: a prospective study of magnetic resonance imaging-detected trabecular microfractures in patients with isolated medial collateral ligament injuries. AU - Miller MD AU - Osborne JR AU - Gordon WT AU - Hinkin DT AU - Brinker MR Y1 - 1998/01//Jan/Feb98 N1 - Accession Number: 107276369. Language: English. Entry Date: 19980801. Revision Date: 20150819. Publication Type: Journal Article; diagnostic images; research; tables/charts. Journal Subset: Allied Health; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 7609541. KW - Knee Injuries -- Complications KW - Medial Collateral Ligament, Knee -- Injuries KW - Contusions and Abrasions -- Diagnosis KW - Patella -- Pathology KW - Femur -- Pathology KW - Tibia -- Pathology KW - Magnetic Resonance Imaging KW - Treatment Outcomes KW - Prospective Studies KW - Adolescence KW - Adult KW - Middle Age KW - Female KW - Human SP - 15 EP - 19 JO - American Journal of Sports Medicine JF - American Journal of Sports Medicine JA - AM J SPORTS MED VL - 26 IS - 1 CY - Thousand Oaks, California PB - Sage Publications Inc. AB - We conducted a prospective study to evaluate bone bruises, or trabecular microfractures, associated with isolated medial collateral ligament injuries. Magnetic resonance imaging was performed on 65 patients with isolated medial collateral ligament injuries determined by physical examination and imaging studies. Of these 65 patients, 29 (45%) had associated trabecular microfractures. Follow-up images were completed at various intervals on 24 of these 29 patients (83%). Complete resolution of these lesions was observed in all cases. This process appears to occur as a result of gradual diffusion over a period of 2 to 4 months. Bone bruises associated with medial collateral ligament injuries are approximately one-half as common as bone bruises associated with anterior cruciate ligament injuries. However, medial collateral ligament-associated trabecular microfractures may be a better natural history model because these injuries are treated nonoperatively. SN - 0363-5465 AD - United States Air Force Academy Hospital, Colorado U2 - PMID: 9474396. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107276369&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874031 T1 - Breast feeding counseling, barriers and facilitators of lactation in the military community. AU - Harlow BA Y1 - 1998/01// N1 - Accession Number: 109874031. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Maternal Attitudes KW - Breast Feeding -- Education KW - Patient Education KW - Breast Feeding KW - Nurse Attitudes KW - Comparative Studies KW - Hospitals, Military KW - Questionnaires KW - Research, Military KW - Lactation KW - Pregnancy KW - Female KW - Human SP - 1 p EP - 1 p JO - Breast Feeding Counseling, Barriers & Facilitators of Lactation in the Military Community JF - Breast Feeding Counseling, Barriers & Facilitators of Lactation in the Military Community PB - Uniformed Services University of the Health Sciences AB - Breast feeding has been endorsed by many professional organizations as the ideal infant feeding method. However, the literature shows that many health care providers do not actively endorse and support breast feeding in their practices. This comparative descriptive study was designed to explore the extent to which breast feeding is being facilitated at one military facility. This study also describes the differences in facilitators and barriers between women who breast feed their infants for four months, versus those who did not. Sixty-four women completed a six page questionnaire that was analyzed using SPSS for Windows. Sixty-five percent of the respondents reported their Health Care Providers recommended breast feeding. Pediatricians and Nurse Practitioners were the most frequent source of breast feeding counseling. All HCPs were rated as helpful or very helpful with respect to the counseling they provided. However only staff nurses and lactation consultants were found to be helpful with breast feeding assistance. A low attendance of breast feeding classes (23%) was noted, and 63% reported no arrangements were made for follow up breast feeding support. Eighty-eight percent of the respondents initiated breast feeding while 39% were still exclusively breast feeding at four months. Barriers cited were lack of pre-pregnancy breast feeding counseling, high incidence of breast feeding moms receiving gift packs of formula, infants receiving formula supplements in the hospital, and mothers being advised to supplement with formula after discharge. Other barriers included frequent moves, lack of familial support, active duty status and working mothers complaining of not having time to pump. Facilitators cited were a high incidence of rooming in and feeding on demand, and respondents reporting a high degree of satisfaction with their in-hospital breast feeding experience. Women who breast fed less than four months were less likely to recall discharge instructions and how to tell if the baby was receiving enough milk. Despite a higher than average incidence of breast feeding in this military community, increased health care provider awareness and support for lactation is recommended. AV - Order Info: 1393319 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874031&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Grier, Samuel L. AU - Bryant, Larry W. T1 - The Case for Desktops. JO - Communications of the ACM JF - Communications of the ACM Y1 - 1998/01// VL - 41 IS - 1 M3 - Article SP - 70 EP - 71 SN - 00010782 AB - In the article, authors say that on campuses where all students are expected to have and use computers, laptops appear to be the popular choice. Students themselves seem to prefer laptops. The portability of laptops allows students to take them to classes, libraries, and on trips. It is argued that their ubiquity makes computer-enhanced classroom instruction possible, decreases the need for laboratories, and consequently lowers the institution's computer budget. It is often argued that issuing a portable computer to each student would be more economical to the academy since there would no longer be a need for computer laboratories. Desktop computers are easily upgraded, but laptops are either very expensive to upgrade or impossible to modify. In summary, a desktop computer currently provides more bang for the buck than a laptop. Not only can the student purchase technically superior machine that stands a greater chance of remaining functional all four years, but the desktop is cheaper to maintain, more reliable, and easier to upgrade. KW - LAPTOP computers KW - COMPUTERS KW - COST effectiveness KW - UNIVERSITIES & colleges KW - COMPUTERS & college students KW - COMPUTER assisted instruction N1 - Accession Number: 11863124; Grier, Samuel L. 1; Email Address: griersl.dfcs@usafa.af.mil; Bryant, Larry W. 2; Email Address: bryantlw.df@usafa.af.mil; Affiliations: 1: Professor and Head of the Computer Science Department, Department of United States Air Force Academy, Colorado Springs, CO.; 2: Director, Academic Computing, United States Air Force Academy Colorado Springs, CO.; Issue Info: Jan1998, Vol. 41 Issue 1, p70; Thesaurus Term: LAPTOP computers; Thesaurus Term: COMPUTERS; Thesaurus Term: COST effectiveness; Thesaurus Term: UNIVERSITIES & colleges; Subject Term: COMPUTERS & college students; Subject Term: COMPUTER assisted instruction; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 443142 Electronics Stores; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 334111 Electronic Computer Manufacturing; NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; Number of Pages: 2p; Document Type: Article L3 - 10.1145/268092.268120 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=11863124&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - THES ID - 109874024 T1 - Correlation of intraoperative recordings from a forehead mounted liquid crystal thermometer and esophageal thermistor. AU - Clark JA Y1 - 1998/01// N1 - Accession Number: 109874024. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Anesthesia Equipment and Supplies -- Evaluation KW - Thermometers -- Evaluation KW - Intraoperative Monitoring KW - Correlational Studies KW - Comparative Studies KW - Human SP - 1 p EP - 1 p JO - Correlation of Intraoperative Recordings From a Forehead Mounted Liquid Crystal Thermometer & Esophageal Thermistor JF - Correlation of Intraoperative Recordings From a Forehead Mounted Liquid Crystal Thermometer & Esophageal Thermistor PB - Uniformed Services University of the Health Sciences AB - This study evaluated the performance of a liquid crystal temperature device during general anesthesia. Eighteen patients undergoing general anesthesia were the study population. After obtaining informed consent, the liquid crystal device was placed on the patient's forehead in the holding area. Patients were brought to the OR suite where general anesthesia was induced via IV technique and maintained with Isoflurane and N2O or Desflurane and N20. An esophageal stethoscope/thermistor was placed shortly after induction of anesthesia for temperature assessment and correlation with the recordings of the liquid crystal device. One hundred and ninety temperature comparisons were recorded. Statistical analysis using Pearson's correlation coefficient gave an R=.653 significant at the p<.01 level. The forehead mounted liquid crystal thermometer appears to be comparable to intraoperative temperature recordings with that of the esophageal thermistor. AV - Order Info: 1393315 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874024&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874039 T1 - A description of the practice pattern characteristics of anesthesia care in small, medium and large teaching and non-teaching medical treatment facilities in the Air Force. AU - Wade RL Y1 - 1998/01// N1 - Accession Number: 109874039. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Nurse Anesthetists KW - Anesthesia -- Methods KW - Anesthetics -- Administration and Dosage KW - Anesthesiologists KW - Advanced Nursing Practice KW - United States Air Force KW - Comparative Studies KW - Research, Military KW - Hospitals, Military KW - Human SP - 1 p EP - 1 p JO - Description of the Practice Pattern Characteristics of Anesthesia Care in Small, Medium & Large Teaching & Non-teaching Medical Treatment Facilities in the Air Force JF - Description of the Practice Pattern Characteristics of Anesthesia Care in Small, Medium & Large Teaching & Non-teaching Medical Treatment Facilities in the Air Force PB - Uniformed Services University of the Health Sciences AB - The purpose of this study was to investigate the practice pattern characteristics of anesthesia care in small, medium, and large teaching and non-teaching Medical Treatment Facilities (MTFs) in the Air Force. Data about anesthesia provider type, techniques and agents utilized, specialty services available, and military taskings affecting anesthesia providers (i.e. mobility exercises) were collected. The research was conducted utilizing a data collection tool distributed to the chief Certified Registered Nurse Anesthetists (CRNAs) at every Air Force MTF where anesthesia services were provided. A 73% return rate was obtained. Data demonstrated that 36% of the MTFs are staffed solely by CRNAs and the anesthesiologist to CRNA ratio is higher in large facilities. The most utilized technique in medium and large MTFs is general anesthesia with monitored anesthesia care (MAC) being the most used in small facilities. Fifty three percent of all MTFs provide obstetrical services with small MTFs administering twice as many intrathecal narcotics as labor epidurals. Most USAF MTFs provide pain management services with 50% of small facilities, staffed solely by CRNAs, having this service. The anesthetic agents most utilized include Fentanyl, Propofol, Versed, Desflurane, Isoflurane, Lidocaine and Rocuronium; others, Bupivicaine, Cisatricurium and Remifentanyl are rarely used. Subarachniod block is the technique most utilized by all MTFs on a weekly and daily basis and Bier blocks are the most utilized upper extremity block. Most MTFs report having a mobility tasking with small facilities having more CRNAs than anesthesiologists assigned. Almost all facilities reported not performing cases with field anesthesia equipment. The information from this study can assist Air Force leaders in tailoring educational/residency programs, determine operational readiness, and to assess practice variations among various Air Force MTFs and civilian institutions. AV - Order Info: 1393332 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874039&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874023 T1 - Distribution of U.S. military certified registered nurse anesthetists in medical treatment facilities. AU - Durden PB Y1 - 1998/01// N1 - Accession Number: 109874023. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Nurse Anesthetists KW - Hospitals, Military KW - Military Personnel KW - Active Duty Personnel KW - Research, Military KW - Demography KW - Human SP - 1 p EP - 1 p JO - Distribution of U.S. Military Certified Registered Nurse Anesthetists in Medical Treatment Facilities JF - Distribution of U.S. Military Certified Registered Nurse Anesthetists in Medical Treatment Facilities PB - Uniformed Services University of the Health Sciences AB - The purpose of this study was to describe the location and distribution of Certified Registered Nurse Anesthetists (CRNAs) within the military, medical treatment facilities (MTFs), CRNA billets, and MTF characteristics. The three databases used for this analysis were the 1994 population distribution by county from the U.S. Bureau of the Census, the U.S. Medicine 1997-1998 Directory of Federal Medical Treatment facilities, and the CRNA assignment lists provided by the military service CRNA assignment officers. The number of authorized military CRNA positions (or billets) in September 1997 was 578. As of September 1997, 549 of the billets (95%) authorized were filled by CRNAs, including 213 in the Army (89% staffing), 114 in the Navy (97% staffing), and 222 in the Air Force (100% staffing). This study describes where military CRNA's are assigned, and found no correlation between civilian population density and military CRNA density. Analysis of CRNA staffing and their location throughout the military found that the Air Force had the greatest number of small facilities and the lowest surgical bed to CRNA ratio compared to the Army and Navy. In contrast, nearly all of the Army facilities are large or medium and have lower surgical bed to CRNA ratio. This analysis model may be useful in assessing the anesthesia needs for the U.S. military worldwide. AV - Order Info: 1393317 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874023&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Linster, Bruce G. AD - US Air Force Academy T1 - An Evolutionary Explanation for Rotten Kids JO - Economic Inquiry JF - Economic Inquiry Y1 - 1998/01// VL - 36 IS - 1 SP - 98 EP - 107 SN - 00952583 N1 - Accession Number: 0440781; Keywords: Children; Family; Selfishness; Publication Type: Journal Article; Update Code: 199803 N2 - The authors explore how natural selection acts upon genes for cooperation, altruism, and selfishness in an prisoner's dilemma played by family members. A key parameter determining behavior is that parents and children have different expectations of future offspring. Examining asexual and sexually reproducing populations, the authors show that which strategy of cooperation and defection proves be stable depends on the relative reproduction potential of the players and what proportion of the population is young. 'Rotten kids' with altruistic parents can be a stable outcome where reproductive success is the goal and natural selection may lead individuals to care about their unborn progeny. KW - Household Production and Intrahousehold Allocation D13 KW - Fiscal Policies and Behavior of Economic Agents: Household H31 KW - Fertility; Family Planning; Child Care; Children; Youth J13 L3 - http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291465-7295/issues UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0440781&site=ehost-live&scope=site UR - http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291465-7295/issues DP - EBSCOhost DB - ecn ER - TY - THES ID - 109874036 T1 - Factors influencing compliance with mammography screening recommendations in an Air Force population. AU - Link TL Y1 - 1998/01// N1 - Accession Number: 109874036. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Mammography -- Utilization KW - Cancer Screening KW - Descriptive Research KW - Women KW - United States Air Force KW - Ajzen-Fishbein Theory of Reasoned Action KW - Breast Neoplasms KW - Middle Age KW - Aged KW - Aged, 80 and Over KW - Female KW - Human SP - 1 p EP - 1 p JO - Factors Influencing Compliance With Mammography Screening Recommendations in an Air Force Population JF - Factors Influencing Compliance With Mammography Screening Recommendations in an Air Force Population PB - Uniformed Services University of the Health Sciences AB - What is the rate of compliance with mammography screening recommendations in an Air Force population and what factors influence compliance according to the Theory of Reasoned Action (TRA) model? This descriptive study surveyed 74 Air Force female health care beneficiaries ages 50 to 82 years with a mean age of 64 years old. Data was analyzed using SPSS for Windows version 6.1. This study found that over 80% of respondents indicated their last mammogram was for routine screening purposes as opposed to diagnostic purposes. Most respondents (82%) had had a mammogram within the past year. Only one respondent reported never having had a mammogram. Sixty-one percent of respondents demonstrated high participation in mammography screening according to NCI guidelines. Almost 80% of respondents reported it is extremely likely they will obtain a mammogram in the next year. The most important TRA attitude variable associated with mammography screening was finding cancer the examining provider could not. The most important social norm variable was provider recommendation for mammography screening. In terms of facilitating conditions for mammography screening, 75% of respondents reported their mammograms were easy to schedule. Only 17 women reported barriers to screening, the most frequently reported barrier being appointment availability. Most women used Champus as their health coverage, and 60% of respondents stated they paid nothing out of pocket for their mammogram. Overall, this study showed that the sample population participated in mammography screening more regularly that past studies. AV - Order Info: 1393324 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874036&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874027 T1 - Health care provider's attitudes and practices regarding the purpose and use of advance directives in a military health care setting. AU - Larew BL Y1 - 1998/01// N1 - Accession Number: 109874027. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Advance Directives KW - Attitude of Health Personnel -- Evaluation KW - Hospitals, Military KW - United States Air Force KW - Content Validity KW - Research Instruments KW - Descriptive Statistics KW - Attitude Measures KW - Descriptive Research KW - Human SP - 1 p EP - 1 p JO - Health Care Provider's Attitudes & Practices Regarding the Purpose & Use of Advance Directives in a Military Health Care Setting JF - Health Care Provider's Attitudes & Practices Regarding the Purpose & Use of Advance Directives in a Military Health Care Setting PB - Uniformed Services University of the Health Sciences AB - This research study examined health care providers' attitudes and practices on the purpose and use of advance directives in a military health care setting. This research modified a study conducted by the End Of Life Study Group from the University of North Carolina - Chapel Hill. The literature has attributed low completion rates of advance directives to health care providers' erroneous beliefs that these documents are mainly for the terminally ill and elderly. Additionally, inadequate health care provider training and skills about advance directives have been cited for low completion rates. Family nurse practitioners (FNPs), in both civilian and military settings, receive training on ethical and moral implications of advanced nursing practice. These characteristics make the FNP an ideal candidate for promoting the purpose and use of advance directives. In this study, health care providers assigned to a midsized Air Force Base completed a modified research End-of-Life Study Group instrument. The End-of-Life Study Group instrument was modified to include demographic data and military terminology. Supporting evidence of the content validity was obtained via a review of the instrument by two experts. A content validity index on the modified instrument, rating the instrument of 1.0, indicating that the items were relevant to the study. The study consisted of 61 subjects. Data analysis utilized relative frequency scales and percentages. The results of the study revealed that health care providers in a military health care setting held the same attitudes and practice standards as their civilian counterparts. They believed that counseling should occur with any and all patients, yet limited their actual counseling to seriously, chronically, or terminally ill patients. AV - Order Info: 1393323 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874027&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 107244403 T1 - Treatment of a young adult paraplegic with multiple Stage III and IV pressure ulcers. AU - Wesbecher M AU - Barber S AU - Vivians R AU - Farris LE AU - Hackbarth A Y1 - 1998/01//1998 Jan N1 - Accession Number: 107244403. Language: English. Entry Date: 19980301. Revision Date: 20150819. Publication Type: Journal Article; case study; pictorial. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. NLM UID: 9435679. KW - Pressure Ulcer -- Therapy KW - Paraplegia -- Complications KW - Pressure Ulcer -- Nursing KW - Male KW - Adult KW - Spinal Cord Injuries -- Complications KW - Enterostomal Therapy Nursing KW - Gauze Dressings KW - Wound Infection KW - Debridement KW - Hydrogel Dressings KW - Wound Healing KW - Pressure Ulcer -- Complications KW - Osteomyelitis KW - Nutrition Disorders KW - Self Care KW - Self Concept KW - Paraplegia -- Psychosocial Factors SP - 55 EP - 58 JO - Journal of Wound, Ostomy & Continence Nursing JF - Journal of Wound, Ostomy & Continence Nursing JA - J WOCN VL - 25 IS - 1 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins SN - 1071-5754 AD - 74th Medical Group, United States Air Force U2 - PMID: 9481289. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107244403&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874037 T1 - Perceptions of emergency department physicians toward collaborative practice with nurse practitioners in an emergency department setting. AU - Wingert TA Y1 - 1998/01// N1 - Accession Number: 109874037. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Physician Attitudes KW - Nurse Practitioners KW - Emergency Service KW - Professional Role KW - United States Air Force KW - Semi-Structured Interview KW - Hospitals, Military KW - Research, Military KW - Descriptive Research KW - Human SP - 1 p EP - 1 p JO - Perceptions of Emergency Department Physicians Toward Collaborative Practice With Nurse Practitioners in an Emergency Department Setting JF - Perceptions of Emergency Department Physicians Toward Collaborative Practice With Nurse Practitioners in an Emergency Department Setting PB - Uniformed Services University of the Health Sciences AB - As the role of the family nurse practitioner within the United States Air Force continues to be defined, one setting where a need for additional primary care providers exists is the Emergency Department. Nurse practitioners utilized in this setting could augment physician staffing, or could be utilized in non-urgent, Fast-Track areas within Air Force emergency departments. One essential element for role development in this area is approval and appreciation of the role of the nurse practitioner by Air Force Emergency Department physicians. This study explored Emergency Department physician's attitudes toward collaborative health care with nurse practitioners using exploratory, descriptive, qualitative methodology. Utilizing a semi-structured guide adapted from a similar 1996 study, five board-certified emergency department physicians assigned to a Level II emergency department, were interviewed. The physicians were encouraged to elaborate on their definition of nurse practitioners, to discuss their knowledge of the educational requirements, and to describe their view of the scope of practice and limitations of these advanced practice nurses. Munhall and Boyd's methods of data analysis which included theme categorization were utilized in this study. Four major themes categories emerged. The theme categories were separated into those which described (a) Role Performance Issues, (b) Educational Backgrounds/Knowledge Base (c) Trust Issues (d) Role Receptivity. Air Force physicians, though supportive of the role of the family nurse practitioner in the Emergency Department, felt physicians should have an oversight role of all care provided in the Emergency Department. Physician's views regarding the interchangability of nurse practitioners and physicians assistants, trust issues, concerns about legal liability and educational requirements are also described. AV - Order Info: 1393334 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874037&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874034 T1 - Personality traits of nurses in anesthesia and family nurse practitioner masters degree programs. AU - Moore KC Y1 - 1998/01// N1 - Accession Number: 109874034. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. Instrumentation: Myers-Briggs Type Indicator (MBTI). KW - Personality Assessment KW - Nurse Anesthetists KW - Family Nurse Practitioners KW - Students, Nursing, Graduate KW - Military Personnel KW - Descriptive Research KW - Research Instruments KW - Military Nursing KW - Human SP - 1 p EP - 1 p JO - Personality Traits of Nurses in Anesthesia & Family Nurse Practitioner Masters Degree Programs JF - Personality Traits of Nurses in Anesthesia & Family Nurse Practitioner Masters Degree Programs PB - Uniformed Services University of the Health Sciences AB - Personality types have been consistently linked to occupational choices. Studies using the Myers-Briggs Type Indicator (MBTI) have dependable findings when evaluating personality types. The MBTI is a psychometrically sound instrument designed to identify theoretical constructs of Carl Jung's personality typology. The purpose of this study is to describe the personality attributes found in Student Registered Nurse Anesthetist (SRNAs) and Student Family Nurse Practitioners (SFNPs) before they start their graduate programs. Knowledge of personality traits of the two groups carries the possibility of creating educational programs for practitioners to institute in their various academic studies. The research question is to describe the personality traits of nurses in anesthesia and family nurse practitioner masters degree programs. This descriptive study used the MBTI and involved uniformed service nurses who were selected for the Uniformed Service University of the Health Sciences (USUHS) nurse anesthetist and family nurse practitioner programs. Evaluation of the SRNAs, 33% fell into the personality typology designated for 'military' types and 25% were found to be in the 'nurse' personality type. As the inventory was given to military nurses, these results are not surprising. An analysis of SFNPs data, showed that 15% of students belonged in the military group, 23% into the nursing category, and 31% in a category similar to that of general practitioners. This is interesting because family nurse practitioners do similar tasks and and work in the same environment as their counterpart general practitioner physicians. Evaluation of the discrete composite groups of the SRNAs and the SFNPs together found that both groups of were similar. The majority of subjects were the extroverted-sensing-thinking-judging (ESTJ) composite prototype. ESTJ students tend to be rather scholarly. They respond best to well structured courses that produce practical, tangible results. Their academic prowess continues up the academic ladder, although they tend to have less patience with the more abstract theories at the college level. They are frustrated by intuitive-perceiving professors whose lectures do not follow stated outlines and whose material is not limited to the factual and concrete. The fact that these nurses generally fell into the nursing and military prototypes adds validity to the instrument. Once personality types of students are known, faculty can initiate programs to help the students better understand the methods of teaching, test taking, and communicating. This valuable information could then be integrated into the educational curriculum. AV - Order Info: 1393326 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874034&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874035 T1 - Prevalence of Helicobacter pylori in gastric fluid in the surgical patient. AU - McManus TJ Y1 - 1998/01// N1 - Accession Number: 109874035. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Helicobacter Pylori KW - Prevalence KW - Gastric Juice KW - Military Personnel KW - Descriptive Research KW - Cross Sectional Studies KW - Hospitals, Military KW - Human SP - 1 p EP - 1 p JO - Prevalence of Helicobacter Pylori in Gastric Fluid in the Surgical Patient JF - Prevalence of Helicobacter Pylori in Gastric Fluid in the Surgical Patient PB - Uniformed Services University of the Health Sciences AB - Helicobacter pylori is a bacterium that infects the human gastric mucosa. It is well established as a primary factor in peptic ulcer disease and has been implicated in the pathogenesis of gastric adenocarcinoma. Surveys consistently show that one half of the world's population carry H. pylori. H. pylori associated peptic ulcer disease afflicts approximately 10% of the U.S. population at some point during their lives. Once established, most infections last for decades and rarely resolve spontaneously. In this descriptive study gastric fluid was collected from 60 asymptomatic patients about to undergo general anesthesia. Gastric fluid was obtained and cultured to determine the presence of H. pylori. Ten percent cultured positive for the presence of H. pylori. Data analysis included descriptive and inferential statistics. Results indicated that culturing gastric juice for H. pylori is a simple, sensitive, and specific method to establish its presence and that nasogastric aspirates and tubes should be considered as potentially infectious. The observed 10% positivity for H. pylori within a group of 60 randomly selected military beneficiaries provides insight into the U.S. military population. The prevalence of H. pylori amongst military members is particularly interesting. The highly mobile nature and frequent travel puts the American soldier at increased risk for acquisition of this infection. Nurse practitioners are especially well suited to provide early diagnosis and treatment of infections such as H. pylori while implementing health maintenance and promotion efforts in order to decrease susceptibility. This novel approach to obtaining cultures for H. pylori is a cost effective and practical alternative for establishing the presence of this infection. In addition, knowing the prevalence of H. pylori among patients receiving care at military facilities will help guide nursing practice in early detection, treatment and prevention of this prevalent and costly infectious disease. AV - Order Info: 1393325 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874035&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874032 T1 - The prevalence of visible and/or occult blood on anesthesia and monitoring equipment. AU - Perry SM Y1 - 1998/01// N1 - Accession Number: 109874032. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Occult Blood KW - Anesthesia Equipment and Supplies KW - Surgical Equipment and Supplies KW - Cross Sectional Studies KW - Operating Rooms KW - Human SP - 1 p EP - 1 p JO - Prevalence of Visible &/or Occult Blood on Anesthesia & Monitoring Equipment JF - Prevalence of Visible &/or Occult Blood on Anesthesia & Monitoring Equipment PB - Uniformed Services University of the Health Sciences AB - This study examined the prevalence of visible and or occult blood on 6 types of equipment. This equipment included blood pressure cuffs, electrocardiograph cables, pulse oximeter probes, ventilator control switches, vaporizer control knobs and flow meter knobs. This equipment was inspected for visible blood and then tested for occult blood utilizing a three stage phenolphthalein test. A total of 28 operating suites from 2 separate medical facilities were used for data collection. The total sample size was 342 observations of the 6 types of equipment. Of the 342 observations, 32% were positive for occult blood. Only 6 samples were positive for visible blood. The presence of blood on this equipment may be in direct violation of the Occupational Safety and Health Administrations Blood-borne Pathogen Standard and the infection control guidelines of the American Association of Nurse Anesthetists and the American Society of Anesthesiologist. The presence of blood on this equipment may increase the risk for nosocomial and occupational exposure to viral and bacterial pathogens. Recommendations were made to decrease the risks from this contamination by redesigning equipment, increasing the use of disposable equipment and ensuring compliance with effective infection control procedures. AV - Order Info: 1393328 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874032&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874033 T1 - Psychomotor functioning: comparison of patients recovering from general anesthesia with remifentanil and a volatile anesthetic versus fentanyl and a volatile anesthetic. AU - Moseley GR Y1 - 1998/01// N1 - Accession Number: 109874033. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. Instrumentation: Trieger Dot Test. KW - Psychomotor Performance KW - Postoperative Care KW - Fentanyl KW - Anesthetics, General KW - Comparative Studies KW - Research Instruments KW - Test-Retest Reliability KW - Physiological Studies KW - Human SP - 1 p EP - 1 p JO - Psychomotor Functioning: Comparison of Patients Recovering From General Anesthesia With Remifentanil & a Volatile Anesthetic Versus Fentanyl & a Volatile Anesthetic JF - Psychomotor Functioning: Comparison of Patients Recovering From General Anesthesia With Remifentanil & a Volatile Anesthetic Versus Fentanyl & a Volatile Anesthetic PB - Uniformed Services University of the Health Sciences AB - A new opioid, remifentanil, recently gained approval for clinical use by the Food and Drug Administration. This has given anesthesia providers another agent with which to conduct anesthesia for both inpatient and outpatient surgery. Remifentanil has markedly different pharmacokinetics from other commonly used opioids. Specifically, remifentanil provides a predictable and rapid termination of action -- a potential advantage over other opioids. The purpose of this study was to compare how remifentanil and another more commonly used opioid, fentanyl, affect one aspect of anesthesia recovery -- psychomotor functioning. Twenty three subjects were sampled. Subjects received a balanced anesthetic using either remifentanil and a volatile agent, or fentanyl and a volatile agent. The Trieger Dot test was the assessment tool used to assess for baseline and recovery of psychomotor functioning. A test-retest reliability coefficient of 0.76 was obtained. Analysis of data did not reveal significant differences in psychomotor recovery between the two groups. Possible reasons behind this may have been related to the study's design. Due to the short duration of action associated with remifentanil, all subjects who received remifentanil also received other intraoperative opioids. These may have influenced postoperative psychomotor functioning postoperatively. Additionally, variety in case procedure, length, and the amount of anesthesia required may have significantly influenced postoperative psychomotor functioning. AV - Order Info: 1393327 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874033&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874018 T1 - Quality of life for adults with asthma in a military setting. AU - Adler RR Y1 - 1998/01// N1 - Accession Number: 109874018. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. Instrumentation: Asthma Quality of Life Questionnaire (AQLQ) (Juniper et al). KW - Asthma -- Symptoms KW - Quality of Life -- Evaluation KW - Military Personnel KW - Convenience Sample KW - Self Report KW - Questionnaires KW - Research, Military KW - Correlational Studies KW - Conceptual Framework KW - Adult KW - Human SP - 1 p EP - 1 p JO - Quality of Life for Adults With Asthma in a Military Setting JF - Quality of Life for Adults With Asthma in a Military Setting PB - Uniformed Services University of the Health Sciences AB - Asthma is a disease that affects millions of Americans. The financial, functional and emotional costs are substantial and have a significant impact on quality of life. The purpose of this study was to examine the relationship between the severity of asthma via clinical and functional parameters and the quality of life described by adults with asthma in the military health care system. A convenience sample of 39 subjects with the diagnosis of asthma at a major military medical center completed a self-administered survey which included demographic information and symptoms with measures of lung function. The survey included the Asthma Quality of Life Questionnaire (AQLQ) developed by E. Juniper and associates. Missing data for symptom frequency and lung function measures necessitated a revision in the question that related to nighttime symptoms after the first month of data collection. In the data collected prior to the revision a statistically significant correlation was seen in the four domains of activities, emotions, symptoms, and environment and in the overall score of quality of life with indices for symptom severity. There was nonsignificant correlation to lung function. After the revision of the tool, data correlated to lung function and not to symptom severity. Although the small sample size and the lack of adequate information relating to symptom severity may explain these findings, asthma may affect quality of life in ways that objective clinical measures cannot predict. This is consistent with the Conceptual Model of Symptom Management in which quality of life is one of ten interrelated dimensions of symptom outcomes. Providers should include assessment for quality of life to understand the patient's perspective and provide a comprehensive approach to asthma management. AV - Order Info: 1393310 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874018&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874040 T1 - Smoking cessation/prevention in the Air Force: how adequate? AU - Udensi CA Y1 - 1998/01// N1 - Accession Number: 109874040. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Military Personnel KW - Personnel, Health Facility KW - Smoking Cessation KW - Documentation KW - United States Air Force KW - Retrospective Panel Studies KW - Record Review KW - Random Sample KW - Descriptive Statistics KW - Reliability and Validity KW - Human SP - 1 p EP - 1 p JO - Smoking Cessation/Prevention in the Air Force: How Adequate? JF - Smoking Cessation/Prevention in the Air Force: How Adequate? PB - Uniformed Services University of the Health Sciences AB - It is widely held that tobacco is a cause of cancer and other debilitating illnesses. Public policy restricting sales and uses of the product everywhere, even in tobacco growing regions of the country, underscores the seriousness of this belief. Recently, one of the major tobacco companies has come forth and admitted that tobacco is a health hazard. The purpose of this study is to determine if healthcare providers in the military adequately address tobacco related ailments and smoking cessation programs with their clients. This study focused on what happens at the primary point of contact between military healthcare providers and clients. A retrospective chart review of a random sample of charts and client interview was employed to compare providers' documented practice protocols with established guidelines set by the Department of Defense (DoD) for implementation of smoking cessation programs in the military. The study was conducted to determine how well military providers met the guidelines. An Intervention Plan Documentation checklist constructed by the researcher, and evaluated by a panel of two experts for content validity in smoking cessation practices was utilized. A pilot study was done to determine intercoder reliability. Descriptive statistics were utilized to determine whether health care providers in the military organization were promoting a tobacco free lifestyle and preventing smoking related health problems as evidenced by the documentation in client charts. Findings showed that military providers were having dialogue with their clients about smoking cessation. However, documentation of this intervention was not always complete. AV - Order Info: 1393331 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874040&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 2000-15544-007 AN - 2000-15544-007 AU - Brockway, Jennifer Howard AU - Heath, Linda T1 - Risk at night: Contextual effects of perceived control on fear of rape. JF - Representative Research in Social Psychology JO - Representative Research in Social Psychology JA - Represent Res Soc Psychol Y1 - 1998/// VL - 22 SP - 52 EP - 59 CY - US PB - University of North Carolina Dept of Psychology SN - 0034-4907 N1 - Accession Number: 2000-15544-007. Partial author list: First Author & Affiliation: Brockway, Jennifer Howard; US Air Force Academy, Dept of Behavioral Sciences & Leadership, CO, US. Release Date: 20000705. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Fear; Internal External Locus of Control; Rape; Risk Perception. Classification: Personality Traits & Processes (3120). Population: Human (10); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320). Methodology: Empirical Study; Experimental Replication. Page Count: 8. Issue Publication Date: 1998. AB - Effects of perceived control over rape on perceptions of risk and fear were examined by combining an informational control manipulation with an environmental control manipulation. The participants were 161 female undergraduates. Pamphlet conditions that presented rape as totally controllable or as somewhat under the control of the woman were paired with music with static, which respondents were told they could or could not control. Ss then completed questionnaires about fear and perceived risk of rape. Replicating L. Heath and L. Davidson (1988), perceptions of low control over rape caused increased fear and risk. In addition, effects of perceived control of rape extend to a generalized sense of risk and fear at night, not specifically to risk and fear of rape. Implications for conceptually distinct and contextually precise measures of crime perceptions are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - perceived control KW - fear & perceived risk of rape KW - female undergraduates KW - 1998 KW - Fear KW - Internal External Locus of Control KW - Rape KW - Risk Perception KW - 1998 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2000-15544-007&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 1998-02579-010 AN - 1998-02579-010 AU - Brockway, Jennifer Howard AU - Bryant, Fred B. T1 - You can't judge a measure by its label: Teaching the process of instrumentation. JF - Teaching of Psychology JO - Teaching of Psychology JA - Teach Psychol Y1 - 1998/// VL - 25 IS - 2 SP - 121 EP - 123 CY - US PB - Lawrence Erlbaum SN - 0098-6283 SN - 1532-8023 N1 - Accession Number: 1998-02579-010. Partial author list: First Author & Affiliation: Brockway, Jennifer Howard; United States Air Force Academy, US. Other Publishers: Sage Publications; Taylor & Francis. Release Date: 19980701. Correction Date: 20111003. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Conference Information: American Psychological Society Institute on the Teaching of Psychology, Jun, 1996, San Francisco, CA, US. Conference Note: An earlier version of the article was presented at the conference. Major Descriptor: Graduate Education; Measurement; Psychology Education; Teaching Methods; Undergraduate Education. Classification: Curriculum & Programs & Teaching Methods (3530). Population: Human (10). Page Count: 3. Issue Publication Date: 1998. AB - Describes an exercise in instrument selection applicable to both undergraduate and graduate psychology courses. The exercise consists of 5 progressive steps that involve choosing and defining a theoretical construct (Steps 1 and 2), using computer based technology to obtain 2 distinct instruments that measure this construct (Steps 3 and 4), and comparing and contrasting these 2 instruments along multiple dimensions (Step 5). This activity generates awareness of the issues involved in measuring latent constructs and teaches at least 3 lessons: (1) the 1st step to accurate instrumentation is precisely conceptualizing the construct of interest; (2) there is more than 1 way to measure latent constructs, and these multiple approaches should be compared, and (3) it is crucial to measure a construct in a way that best matches its underlying definition. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - exercise in instrument selection in undergraduate & graduate psychology courses KW - 1998 KW - Graduate Education KW - Measurement KW - Psychology Education KW - Teaching Methods KW - Undergraduate Education KW - 1998 DO - 10.1207/s15328023top2502_10 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1998-02579-010&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2009-08624-003 AN - 2009-08624-003 AU - Lester, Richard I. AU - Kunich, John C. T1 - Leadership and management: The quality quadrants. JF - Journal of Leadership Studies JO - Journal of Leadership Studies Y1 - 1997/10// VL - 4 IS - 4 SP - 17 EP - 32 CY - US PB - Baker College Publishing Co. SN - 1071-7919 N1 - Accession Number: 2009-08624-003. Other Journal Title: Journal of Leadership & Organizational Studies. Partial author list: First Author & Affiliation: Lester, Richard I.; Ira C. Eaker College for Professional Development, Air University, United States Air Force, Maxwell AFB AL, AL, US. Other Publishers: Sage Publications. Release Date: 20090817. Correction Date: 20090831. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Leadership; Management; Quality Control. Classification: Management & Management Training (3640). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Page Count: 16. Issue Publication Date: Oct, 1997. AB - If Mark Twain were a worker in a modern organization, he might quip 'Everybody talks about Quality, but nobody does anything about it.' Although this apocryphal quote is somewhat exaggerated, it is partially—and painfully—true. At least, much of what people have done about Quality has been incompletely planned and inconsistently applied. Many organizations of all types have attempted to jump on the Quality bandwagon, with widely varying results. One reason why some Quality programs fail is that the leaders and managers within the organization do not fully understand the interdependence of leadership and management and the indispensable contributions both must make for true Quality to result. And this understanding does not come easily or always predictably. But an understanding of this leadership and management duality is critical to 21st century organizational success. Its inherent understanding will be characterized by increased challenges, responsibility, autonomy, risk, and uncertainty. Running an organization with good leadership but without effective management is like trying to find a certain street address by using the best available map of the entire nation. Conversely, trying to run an organization with poor leadership, even if excellent managers are dutifully at work, is akin to attempting a lunar mission launch by using a AAA trip guide. In either situation, the Quality bandwagon is a rapidly moving target—people who try to jump aboard often cannot catch up, or fall off and hurt themselves and others in the process. The result is an understandable but misplaced disillusionment with the entire Quality movement. The purpose of this article is to present a model for use in conceptualizing the interlocking nature of leadership and management and the tools both must bring to the Quality process. A deceptively simple grid chart, which we call the Quality Quadrants, will serve as the vehicle for analyzing this vital, yet often overlooked, principle. The authors hope that the Quality Quadrants will help leaders and managers understand the cooperative nature of Quality and the complementary roles each must play. Properly understood, the Quality Quadrants should help leaders and managers at all levels to practically implement key concepts that will yield tangible benefits for all concerned. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - leadership KW - management KW - quality quadrants KW - 1997 KW - Leadership KW - Management KW - Quality Control KW - 1997 DO - 10.1177/107179199700400403 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2009-08624-003&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-11587-003 AN - 2005-11587-003 AU - Gallagher, Robert W. AU - Hobfoll, Stevan E. AU - Ritter, Christian AU - Lavin, Justin T1 - Marriage, Intimate Support and Depression during Pregnancy: A Study of Inner-City Women. JF - Journal of Health Psychology JO - Journal of Health Psychology JA - J Health Psychol Y1 - 1997/10// VL - 2 IS - 4 SP - 457 EP - 469 CY - US PB - Sage Publications SN - 1359-1053 SN - 1461-7277 AD - Hobfoll, Stevan E., Applied Psychology Center, Kent State University, Kent Hall, Kent, OH, US, 44242 N1 - Accession Number: 2005-11587-003. PMID: 22013087 Partial author list: First Author & Affiliation: Gallagher, Robert W.; United States Air Force, Kent, OH, US. Release Date: 20060130. Correction Date: 20141020. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Marital Status; Marriage; Postpartum Depression; Pregnancy; Social Support. Minor Descriptor: Stress. Classification: Social Processes & Social Issues (2900). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340). Tests & Measures: Life Events (Revised) scale; Schedule of Affective Disorders and Schizophrenia; Beck Depression Inventory DOI: 10.1037/t00741-000; Social Support Questionnaire. Methodology: Empirical Study; Longitudinal Study; Prospective Study; Quantitative Study. References Available: Y. Page Count: 13. Issue Publication Date: Oct, 1997. AB - We examined the influence of stress, intimate support and marital status on postpartum depression among 189 African American and European American, inner-city women. We selected women in three common categories: (1) married, (2) cohabitating with partner, and (3) romantically involved, but not cohabitating. Women were interviewed on two occasions during pregnancy and seven to nine weeks following delivery. Women who were not married and did not live with their partner reported less intimacy with their partner and greater depression and increases in depression. Both marriage and cohabitation limited women's depression level. Married women also increased in intimacy during their pregnancy, but cohabitating women did not. Results were independent of ethnic status, age and income. The importance of the findings given the rise in single parenthood was discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - marriage KW - intimate support KW - depression KW - postpartum pregnancy KW - stress KW - marital status KW - 1997 KW - Marital Status KW - Marriage KW - Postpartum Depression KW - Pregnancy KW - Social Support KW - Stress KW - 1997 DO - 10.1177/135910539700200403 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-11587-003&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 107301608 T1 - Olympic quest -- training for an Olympic medal in Greco-Roman wrestling. AU - Hendrick A Y1 - 1997/08//1997 Aug N1 - Accession Number: 107301608. Language: English. Entry Date: 19981201. Revision Date: 20150711. Publication Type: Journal Article; case study; pictorial; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 9433793. KW - Athletic Training -- Methods KW - Wrestling KW - Muscle Strengthening -- Methods KW - Sporting Events KW - Athletic Injuries KW - Plyometrics KW - Body Composition KW - Adult KW - Male SP - 28 EP - 38 JO - Strength & Conditioning JF - Strength & Conditioning JA - STRENGTH CONDITION VL - 19 IS - 4 CY - Colorado Springs, Colorado PB - National Strength & Conditioning Association SN - 1073-6840 AD - Assistant Strength and Conditioning Coach, US Air Force Academy UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107301608&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Jones, Vernon Dale AU - Bretschneider, Stuart AU - Gorr, Wilpen L. T1 - Organizational Pressures on Forecast Evaluation: Managerial, Political, and Procedural Influences. JO - Journal of Forecasting JF - Journal of Forecasting Y1 - 1997/07// VL - 16 IS - 4 M3 - Article SP - 241 EP - 254 SN - 02776693 AB - This paper proposes a theory to explain why some forecasting organizations institutionalize forecast accuracy evaluation while others do not. The theory considers internal and external aspects of managerial, political, and procedural factors as they affect forecasting organizations. The theory is then tested using data from a survey of the US Federal Forecasters Group. Though some support for the theory is developed, multiple alternative explanations for results and the 'public' nature of the sample organizations prevent wide-scale generalization. The results suggest that larger organizations are more likely to have some form of forecast evaluation than smaller units. The institutionalization of forecast accuracy evaluation is closely linked to internal managerial and procedural factors, while external political pressure tends to reduce the likelihood of institutionalization of evaluation of forecast accuracy. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Forecasting is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BUSINESS forecasting KW - FORECASTING KW - DECISION making KW - ESTIMATION theory KW - ORGANIZATION KW - BUSINESS planning KW - and procedural pressures and influences on forecasting KW - implementation of forecasts KW - institutional KW - managerial KW - organizational KW - political KW - users of forecasts N1 - Accession Number: 9709192801; Jones, Vernon Dale 1,2; Bretschneider, Stuart 3; Gorr, Wilpen L. 4; Affiliations: 1: Lieutenant Colonel in the US Air Force.; 2: Assistant Professor and Chief, American and Policy Studies Division in the Department of Political Science, US Air Force Academy in Colorado Springs.; 3: Professor of Public Administration and Director of the Center for Technology and Information Policy, Maxwell School for Citizenship and Public Affairs of Syracuse University.; 4: Professor of Public Policy and Management and Director of the Geographic Information Systems Lab, H. John Heinz III School of Public Policy and Management, Carnegie Mellon.; Issue Info: Jul97, Vol. 16 Issue 4, p241; Thesaurus Term: BUSINESS forecasting; Thesaurus Term: FORECASTING; Thesaurus Term: DECISION making; Thesaurus Term: ESTIMATION theory; Thesaurus Term: ORGANIZATION; Thesaurus Term: BUSINESS planning; Author-Supplied Keyword: and procedural pressures and influences on forecasting; Author-Supplied Keyword: implementation of forecasts; Author-Supplied Keyword: institutional; Author-Supplied Keyword: managerial; Author-Supplied Keyword: organizational; Author-Supplied Keyword: political; Author-Supplied Keyword: users of forecasts; Number of Pages: 14p; Illustrations: 1 Diagram, 4 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=9709192801&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Smith, Leslie B. AU - Bhattacharya, Amit AU - Lemasters, Grace AU - Succop, Paul AU - Puhala II, Edward AU - Medvedovic, Mario AU - Joyce, John T1 - Effect of Chronic Low-Level Exposure to Jet Fuel on Postural Balance of US Air Force Personnel. JO - Journal of Occupational Medicine JF - Journal of Occupational Medicine Y1 - 1997/07// M3 - Article SP - 623 EP - 632 SN - 00961736 AB - This study used the postural stability technique to investigate the neurological effects of cumulative low-level exposure to raw JP-8 jet fuel vapor on aircraft maintenance personnel. All subjects performed two sets of four 30-second postural sway tests. The results of mean cumulative exposure levels (in parts per million ± standard error of mean) were the following: naphthas, 1308 ± 292; benzene, 21.2 ± 5.7; toluene, 23.8 ± 6.1; and m-,o-, p-xylene, 22.7 ± 5.4. Covariate adjusted regression analysis of the exposed group data showed a statistically significant association (P > 0.05) between the solvents (benzene, toluene, and xylene) and increased postural sway response. For all solvent exposures, the "eyes closed, on foam" test provided the strongest association between sway length and JP-8 benzene (r2 range, 0.45 to 0. 52), implying subtle influence on vestibular/proprioception functionalities. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Occupational Medicine is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 113379259; Smith, Leslie B. 1; Bhattacharya, Amit 1; Lemasters, Grace 1; Succop, Paul 1; Puhala II, Edward 1; Medvedovic, Mario 1; Joyce, John 1; Source Information: Jul1997, p623; Number of Pages: 10p; Document Type: Article; Full Text Word Count: 6261 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=113379259&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 1997-43210-005 AN - 1997-43210-005 AU - Jones, Steven K. AU - Yurak, Tricia J. AU - Frisch, Deborah T1 - The effect of outcome information on the evaluation and recall of individuals' own decisions. JF - Organizational Behavior and Human Decision Processes JO - Organizational Behavior and Human Decision Processes JA - Organ Behav Hum Decis Process Y1 - 1997/07// VL - 71 IS - 1 SP - 95 EP - 120 CY - Netherlands PB - Elsevier Science SN - 0749-5978 SN - 1095-9920 N1 - Accession Number: 1997-43210-005. Other Journal Title: Organizational Behavior & Human Performance. Partial author list: First Author & Affiliation: Jones, Steven K.; US Air Force Academy, Dept of Behavioral Sciences & Leadership, CO, US. Release Date: 19980201. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Decision Making; Feedback; Individual Differences; Memory; Self-Evaluation. Classification: Cognitive Processes (2340); Personality Traits & Processes (3120). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. Page Count: 26. Issue Publication Date: Jul, 1997. AB - Addresses 2 questions about the possible effects of information concerning a decision's outcome: whether outcome information influences individuals' evaluations of their own decisions, and if outcome information affects people's recall of their own decision making processes. In 4 experiments, 90, 87, 145, and 128 students, respectively, chose between 2 scholarship applicants and received either good, bad, or no outcome information relevant to their decisions. Ss then answered questions concerning their evaluation and recall of their decision making processes. In exp 2, feedback indicated Ss' performance compared to other decision makers. In exp 3, Ss completed a questionnaire containing additional questions about specific details of the decision making process immediately following and 1 wk after making their choice. In exp 4, Ss completed the questionnaire only once. Results show that outcome information influenced Ss' evaluations of their decision making processes. However, it has much less of an effect on their memory for those processes, particularly when memory is assessed using specific questions about the processes used in making the decision. Implications for research relying on retrospective self-reports of people's decision processes are discussed. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - influence of outcome information on evaluations of decisions & recall of decision making processes KW - adults KW - 1997 KW - Decision Making KW - Feedback KW - Individual Differences KW - Memory KW - Self-Evaluation KW - 1997 DO - 10.1006/obhd.1997.2714 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1997-43210-005&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 107332086 T1 - Incidence of visible and occult blood on laryngoscope blades and handles. AU - Phillips RA AU - Monaghan WP Y1 - 1997/06// N1 - Accession Number: 107332086. Language: English. Entry Date: 19970801. Revision Date: 20150820. Publication Type: Journal Article; equations & formulas; research; tables/charts. Journal Subset: Blind Peer Reviewed; Core Nursing; Editorial Board Reviewed; Expert Peer Reviewed; Nursing; Peer Reviewed; USA. NLM UID: 0431420. KW - Occult Blood KW - Cross Infection KW - Sterilization and Disinfection KW - Anesthesia Equipment and Supplies KW - Airway Management -- Equipment and Supplies KW - Descriptive Research KW - Descriptive Statistics KW - Occult Blood -- Evaluation KW - Convenience Sample KW - Time Factors KW - Human SP - 241 EP - 246 JO - AANA Journal JF - AANA Journal JA - AANA J VL - 65 IS - 3 CY - Park Ridge, Illinois PB - American Association of Nurse Anesthetists AB - Anesthesia providers must take appropriate precautions to reduce the potential for transmission of infectious agents to the patients under their care. The devastating spread of human immunodeficiency virus (HIV) and hepatitis B virus (HBV) over the past decade has resulted in the development of specific guidelines for the cleaning, disinfection, sterilization, and handling of medical equipment and instruments. Contamination of laryngoscope blades and handles with visible and occult blood frequently occurs during routine airway management. Several studies suggest procedures for cleaning, disinfection, sterilization, or handling of laryngoscope blades and handles are ineffective, or there may by poor compliance with the established protocols. The purpose of this study was to determine the incidence of visible and occult blood on laryngoscope blades and handles that were identified as ready for patient use. Sixty-five laryngoscope blades and handles identified as ready for patient use were observed for visible blood and tested for occult blood. A modified version of the three-stage phenolphthalein blood indicator test was employed to determine the presence of occult blood. None of the blades or handles observed had visible blood. Of the 65 blades tested for occult blood, 13 (20%) tested positive. Of the 65 handles tested for occult blood, 26 (40%) tested positive. More afternoon blades and handles tested positive for occult blood than morning blades and handles (P < 0.01). The extent to which contaminated anesthesia equipment plays in nosocomial infection is difficult to determine. The presence of blood is an indicator of potential cross-infection, since biological fluids, such as blood and saliva, are known to transmit infectious diseases. This study confirms that more rigorous decontamination protocols must be instituted to ensure complete removal of blood prior to sterilization, since larynoscope blades and handles have irregular surfaces with repositories for infectious material. SN - 0094-6354 AD - United States Air Force Academy, Colorado Springs, Colorado U2 - PMID: 9233093. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107332086&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Godshall, Franklin J. AU - Elliott, Timothy R. T1 - Behavioral Correlates of Self-Appraised Problem-Solving Ability: Problem-Solving Skills and Health-Compromising Behaviors. JO - Journal of Applied Social Psychology JF - Journal of Applied Social Psychology Y1 - 1997/06//6/1/97 VL - 27 IS - 11 M3 - Article SP - 929 EP - 944 SN - 00219029 AB - According to the revised social problem-solving model, problem solving skills should be associated with cognitive and behavioral attempts to solve or prevent personal problems. We reasoned that the Approach-Avoidance scale on the Problem-Solving Inventory (PSI; Heppner, 1988) measures problem-solving skills as defined in the model, and predicted that scores on this factor would be predictive of health-compromising behaviors among 96 undergraduate students. An aspect of the problem-orientation component would be predictive of global health perceptions. Ineffective problem-solving skills were associated with greater alcohol intake over a 2-week period, and with more sedentary leisure behavior on retrospective and prospective measures. Perceived control over emotions was predictive of health perceptions, as hypothesized. However, elements of problem solving were unrelated to tobacco use, illicit drug use, and exercise behaviors. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Social Psychology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROBLEM solving KW - DECISION making KW - DRINKING of alcoholic beverages KW - DRUG abuse KW - HEALTH KW - PSYCHOLOGY N1 - Accession Number: 26902856; Godshall, Franklin J. 1; Elliott, Timothy R. 2; Affiliations: 1: United States Air Force, Aviano Air Base, Aviano, Italy; 2: Department of Physical Medicine and Rehabilitation, University of Alabama-Birmingham; Issue Info: 6/1/97, Vol. 27 Issue 11, p929; Thesaurus Term: PROBLEM solving; Thesaurus Term: DECISION making; Subject Term: DRINKING of alcoholic beverages; Subject Term: DRUG abuse; Subject Term: HEALTH; Subject Term: PSYCHOLOGY; NAICS/Industry Codes: 722410 Drinking Places (Alcoholic Beverages); Number of Pages: 16p; Illustrations: 2 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=26902856&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Taylor, Peter M. AD - US Air Force Academy T1 - Developing Policy Analysis of Fundamental Tax Reform JO - American Economic Review JF - American Economic Review Y1 - 1997/05// VL - 87 IS - 2 SP - 133 EP - 137 SN - 00028282 N1 - Accession Number: 0425678; Keywords: Policy; Tax; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 199710 KW - Fiscal Policy E62 L3 - http://www.aeaweb.org/aer/ UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0425678&site=ehost-live&scope=site UR - http://www.aeaweb.org/aer/ DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Ciccotello, Conrad S. AU - Muscarella, Chris J. T1 - Matching Organizational Structure with Firm Attributes: A Study of Master Limited Partnerships. JO - European Finance Review JF - European Finance Review Y1 - 1997/05// VL - 1 IS - 2 M3 - Article SP - 169 EP - 191 SN - 13826662 AB - To create value and reduce agency costs, firms adopt available organizational structures that match their attributes. This paper studies the characteristics of firms that choose to become master limited partnerships (MLPs). The MLP sample is dominated by firms in low-growth industries that have highly focused operations and superior profitability compared to their industry peers. After becoming an MLP, sample firms reduce capital expenditures and increase cash distributions, taking advantage of their focus, profitability, and status as non-taxable entities. A subsample of MLPs subsequently change back to corporate form. After becoming corporations, these firms reverse course by cutting cash distributions and increasing capital spending. This cycle demonstrates how firms restructure to adopt organizational forms that best fit their needs. [ABSTRACT FROM AUTHOR] AB - Copyright of European Finance Review is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MASTER limited partnership KW - LIMITED partnership KW - ORGANIZATIONAL structure KW - BUSINESS enterprises KW - CAPITAL investments KW - INVESTMENTS N1 - Accession Number: 18662331; Ciccotello, Conrad S. 1; Muscarella, Chris J. 2; Affiliations: 1: Department of Management, 2354 Fairchild Dr. Suite 6H94. United States Air Force Academy, CO 80840-5701. U.S.A.; 2: Smeal College of Business Administration, Pennsylvania State University, University Park, PA 16802. U.S.A.; Issue Info: 1997, Vol. 1 Issue 2, p169; Thesaurus Term: MASTER limited partnership; Thesaurus Term: LIMITED partnership; Thesaurus Term: ORGANIZATIONAL structure; Thesaurus Term: BUSINESS enterprises; Thesaurus Term: CAPITAL investments; Thesaurus Term: INVESTMENTS; NAICS/Industry Codes: 523999 Miscellaneous Financial Investment Activities; NAICS/Industry Codes: 523930 Investment Advice; Number of Pages: 23p; Illustrations: 8 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=18662331&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Diekmann, Kristina A. AU - Ross, Lee AU - Samuels, Steven M. AU - Bazerman, Max H. T1 - Self-Interest and Fairness in Problems of Resource Allocation: Allocators Versus Recipients. JO - Journal of Personality & Social Psychology JF - Journal of Personality & Social Psychology Y1 - 1997/05// VL - 72 IS - 5 M3 - Article SP - 1061 EP - 1074 SN - 00223514 AB - Two studies explored the tension between self-interest and the equality norm in problems of resource allocation. Study 1 presented graduate business students with a hypothetical task requiring them to make a series of managerial decisions. On learning the outcome of those decisions, they were asked to divide a bonus pool between self and a rival manager (who had opted for very different decisions and achieved either the same results as self on 2 criteria or a better result on 1 criterion and a worse result on the other criterion). Study 2 required Stanford and San Jose State undergraduates to consider the division of a hypothetical scholarship fund between candidates from their 2 schools. Data from both studies contrasted the apparent evenhandedness and lack of self-interest manifested by allocators with the self-serving responses of evaluators. Furthermore, when faced with different claims, participants were inclined to justify an unequal allocation of resources--provided that they, or a representative of their group, received the larger share--that few personally would have recommended, demanded, or imposed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Personality & Social Psychology is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BUSINESS students KW - DECISION making KW - MANAGEMENT KW - SELF-interest KW - EQUALITY KW - SOCIAL norms KW - COLLEGE students N1 - Accession Number: 9712076214; Diekmann, Kristina A. 1; Email Address: kdiekman@vma.cc.nd.edu; Ross, Lee 2; Samuels, Steven M. 3; Email Address: samuelss.dfbl@usafa.af; Bazerman, Max H. 4; Affiliations: 1: University of Notre Dame; 2: Stanford University; 3: United States Air Force Academy; 4: Northwestern University; Issue Info: May97, Vol. 72 Issue 5, p1061; Thesaurus Term: BUSINESS students; Thesaurus Term: DECISION making; Thesaurus Term: MANAGEMENT; Subject Term: SELF-interest; Subject Term: EQUALITY; Subject Term: SOCIAL norms; Subject Term: COLLEGE students; Number of Pages: 14p; Illustrations: 8 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=9712076214&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Gruner, Elliott T1 - Differing Understandings of Captivity in Uranus. JO - Film & History (03603695) JF - Film & History (03603695) Y1 - 1997/02//Feb-Dec1997 VL - 27 IS - 1-4 M3 - Article SP - 68 EP - 71 SN - 03603695 AB - Set in the immediate post-World War II era, the French film 'Uranus' (1991) portrays the captivity experience in ambivalent and inconclusive terms that contrast with the heroic, inspirational approach of American captivity tales. KW - PRISONERS of war KW - HUMANITY KW - MOTION pictures KW - WAR films KW - WORLD War, 1939-1945 KW - CAPTIVITY narratives KW - FRANCE KW - UNITED States KW - 'Uranus' (film) KW - BERRI, Claude KW - URANUS (Film) N1 - Accession Number: 16905445; Gruner, Elliott 1; Affiliations: 1 : United States Air Force Academy; Source Info: Feb-Dec1997, Vol. 27 Issue 1-4, p68; Historical Period: 1991; 1940 to 1949; Subject Term: PRISONERS of war; Subject Term: HUMANITY; Subject Term: MOTION pictures; Subject Term: WAR films; Subject Term: WORLD War, 1939-1945; Subject Term: CAPTIVITY narratives; Subject: FRANCE; Subject: UNITED States; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hia&AN=16905445&site=ehost-live&scope=site DP - EBSCOhost DB - hia ER - TY - THES ID - 109872334 T1 - Acute pain management services: What does the Air Force have to offer? AU - Rayos CL Y1 - 1997/01// N1 - Accession Number: 109872334. Language: English. Entry Date: 19980801. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Pain -- Therapy KW - Hospitals, Military KW - Hospital Programs KW - Anesthesiology Service KW - United States Air Force KW - Descriptive Research KW - Telephone KW - Survey Research KW - Research, Military KW - Human SP - 90 p EP - 90 p JO - Acute Pain Management Services: What Does the Air Force Have to Offer? JF - Acute Pain Management Services: What Does the Air Force Have to Offer? PB - Uniformed Services University of the Health Sciences (USUHS) AB - The purpose of this descriptive study was to assess the prevalence of acute pain management services (APMS), in Air Force medical facilities and examine the roles of anesthesia providers in acute pain management programs. This descriptive study consisted of a telephone survey to all Air Force medical facilities that house an anesthesia department and surgical services. Anesthesia providers in charge of the pain services or chiefs of the anesthesia departments were interviewed about established acute pain programs and practices in their facilities. Each institution was asked questions related to the initiation of a formal APMS, primary goals, services, components of the program, staffing, and familiarity with the Agency for Health Care Policy and Research (AHCPR) guidelines in acute pain management. This study examined current pain treatment programs in the Air Force medical centers and some of the barriers to overcome in improving APMS in the future. Data were analyzed to describe the current status of acute pain services in Air Force facilities and how the services compared to a previous study by Warfield and Kahn (1995) of U.S. hospitals. Air Force medical facilities (45 %) had established as many acute pain management services as U.S. hospitals (42 %). More Air Force facilities provided pain counseling to patients preoperatively than U.S. facilities, but had lower percentages of written components as compared to U.S. hospitals. AV - Order Info: UMI Order PUZ1389303 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872334&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872308 T1 - Adherence to clinical preventive women's health guidelines by selected military health care providers. AU - Petersen PL Y1 - 1997/01// N1 - Accession Number: 109872308. Language: English. Entry Date: 19980601. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Women's Health KW - Military Personnel KW - Preventive Health Care KW - Health Screening -- Evaluation KW - Health Personnel KW - Documentation -- Evaluation KW - Active Duty Personnel KW - Military Dependents KW - United States Air Force KW - Descriptive Research KW - Random Sample KW - Female KW - Adult KW - Content Validity KW - Descriptive Statistics KW - Record Review KW - Retrospective Design KW - Middle Age KW - Research, Military KW - Human SP - 63 p EP - 63 p JO - Adherence to Clinical Preventive Women's Health Guidelines by Selected Military Health Care Providers JF - Adherence to Clinical Preventive Women's Health Guidelines by Selected Military Health Care Providers PB - Uniformed Services University of the Health Sciences (USUHS) AB - This descriptive study reveals what preventative women's health care screening tests, as suggested by the Clinician's Handbook of Preventative Services (CHPS) (U.S. Department of Health and Human Services, 1994), are being employed by a randomly selected group of Air Force health care providers. The study was conducted via retrospective record review at a midsized U.S. Air Force health care facility. The study included women ranging in age from 35 to 55 years, who were seen in the Family Practice or OB/GYN clinics for women's health care. The population studied included active duty women, active duty dependents, and retired female patients. The study employed a tool designed by the researcher using screening guidelines outlined in the CHPS. Two primary care women's health care providers reviewed the tool to obtain estimates of content validity. Following Institutional Review Board approval from the Uniformed Services University of the Health Sciences (USUHS), a pool of 250 records meeting the criteria outlined in the tool were selected. A random sample of 50 subjects was obtained by review of every fifth record. Data analysis consisted of the use of descriptive statistics to report the screening tests used in health maintenance. CHPS standards were met or exceeded for documentation regarding mammograms, pap smears, blood pressure, weight and digital rectal exam. The study found the documentation of height and cholesterol did not meet CHPS standards. AV - Order Info: UMI Order PUZ1385138 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872308&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR T1 - Posterior tibial tunnel placement to avoid anterior cruciate ligament graft impingement by the intercondylar roof. / Placement du tunnel tibial posterieur afin d ' eviter une greffe du ligament croise anterieur par la voute intercondylienne. AU - Miller, M.D. JO - American Journal of Sports Medicine JF - American Journal of Sports Medicine Y1 - 1997/// VL - 25 IS - 6 SP - 818 EP - 822 CY - ; SN - 03635465 N1 - Accession Number: SPHS-918648; Author: Miller, M.D.: 1 ; Author Affiliation: 1 United States Air Force Academy, Colorado, United States; No. of Pages: 5; Language: English; Parent Item: SPHP63; References: 14; General Notes: Illustrated. INSEP, PARIS. Cote: PE168. Acces: copie. K7 - PATHOLOGIE, TRAUMATOLOGIE.; Publication Type: Article; Update Code: 20040701 KW - *SPORTS events KW - *KNEE KW - *SURGERY KW - *WOUNDS & injuries KW - *ANTERIOR cruciate ligament KW - *TENDINITIS KW - GENOU KW - CHIRURGIE KW - BLESSURE UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=SPHS-918648&site=ehost-live&scope=site UR - http://www.aossm.org/ DP - EBSCOhost DB - s3h ER - TY - THES ID - 109872330 T1 - Anesthesia provider's perspectives regarding parental presence during anesthesia induction: A pilot study. AU - Lockwood J Y1 - 1997/01// N1 - Accession Number: 109872330. Language: English. Entry Date: 19980801. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Anesthesia Induction -- In Infancy and Childhood KW - Parental Role KW - Anesthetists KW - Attitude of Health Personnel -- Evaluation KW - Pilot Studies KW - Purposive Sample KW - United States KW - Semi-Structured Interview KW - Convenience Sample KW - Field Notes KW - Parent-Child Relations KW - Secondary Analysis KW - Child KW - Audiorecording KW - Human SP - 34 p EP - 34 p JO - Anesthesia Provider's Perspectives Regarding Parental Presence During Anesthesia Induction: A Pilot Study JF - Anesthesia Provider's Perspectives Regarding Parental Presence During Anesthesia Induction: A Pilot Study PB - Uniformed Services University of the Health Sciences (USUHS) AB - The induction of anesthesia in children can be one of the most stressful parts of the surgical experience. This stress affects the child, the parent, and the surgical team. Children and parents alike are often overwhelmed by the process. The fear and anxiety are further compounded when the parent and child are separated. Several researchers have examined the impact upon parents and children of parental presence during anesthesia induction. Few investigators have examined parental presence's impact on anesthesia providers. This study examines anesthesia provider's perspectives regarding parental presence during the anesthesia induction of children. A purposive sample of anesthesia providers at a children's hospital in northeastern United States was queried regarding their perspectives on providing general anesthesia care to children in general. They were asked to express their perspectives regarding parental presence during the anesthesia induction of children. Semi-structured, qualitative interviews were conducted of consenting providers. Interviews were audio-taped and field notes were taken. Analysis of interviews was accomplished utilizing manual coding and secondary analysis. AV - Order Info: UMI Order PUZ1389301 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872330&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872328 T1 - A comparison of intrathecal and epidural analgesia and its effects on length of labor. AU - Cutbush CM Y1 - 1997/01// N1 - Accession Number: 109872328. Language: English. Entry Date: 19980801. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Labor KW - Analgesia, Epidural KW - Anesthesia, Spinal KW - Analgesia, Obstetrical KW - United States Air Force KW - Record Review KW - Retrospective Design KW - Research, Military KW - Pregnancy KW - Female KW - Hospitals, Military KW - Human SP - 81 p EP - 81 p JO - Comparison of Intrathecal & Epidural Analgesia & its Effects on Length of Labor JF - Comparison of Intrathecal & Epidural Analgesia & its Effects on Length of Labor PB - Uniformed Services University of the Health Sciences (USUHS) AB - A retrospective study was conducted to determine the effects of intrathecal analgesia on length of labor. There have been a number of investigations which show contradictory evidence as to the effect of epidural (EPI) analgesia on the progress of labor. Combined spinal-epidural (CSE) and intrathecal analgesia (ITA) techniques have been used to provide effective pain relief for parturients, but currently there are few data comparing EPI, CSE, and ITA. Intrathecal opioids provide immediate pain relief for the parturient without autonomic, sensory, or motor blockade. All are associated with prolongation of labor and increased incidence of instrumental delivery. A 1995 study reported CSE for labor analgesia is associated with shorter duration of first stage in primiparas. The last two hundred thirteen uncomplicated obstetric charts were reviewed in a 70-bed Air Force hospital which currently provides EPI, CSE, and ITA analgesia. The study consisted of four groups: (1)CSE n=76, (2)EPI n=41, (3) ITA n=49, and (4) NR (no regional analgesia) n=47. It was found length of first stage of labor was significantly less for those who received ITA (P<.001) as compared to all other groups. Second stage labor was significantly shorter for the NR group as compared to CSE (p=.000) and EPI (p=.006) groups. There was no significant difference between length of second stage for ITA and NR groups. ITA analgesia shortened first stage most significantly (p=.006) in both primiparas and multiparas. Stage two was significantly prolonged for both primiparas (P=.047) and multiparas (P=.012) in the CSE group. Since this method of providing analgesia during labor is both versatile and requires less re-dosing of the epidural catheter, thus less manpower hours, implications for use in anesthesia departments unable to offer a full obstetric regional analgesia service are made. AV - Order Info: UMI Order 1389298 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872328&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872300 T1 - A descriptive study of health promotion activities related to tobacco cessation utilized by military nurse practitioners. AU - Aken PL Y1 - 1997/01// N1 - Accession Number: 109872300. Language: English. Entry Date: 19980601. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Tobacco KW - Health Promotion KW - Health Knowledge -- Evaluation KW - Nurse Practitioners KW - Smoking Cessation KW - United States Air Force KW - Active Duty Personnel KW - Descriptive Research KW - Research, Military KW - Descriptive Statistics KW - Stratified Random Sample KW - Questionnaires KW - Healthy People 2000 KW - Face Validity KW - Content Validity KW - Test-Retest Reliability KW - Human SP - 79 p EP - 79 p JO - Descriptive Study of Health Promotion Activities Related to Tobacco Cessation Utilized by Military Nurse Practitioners JF - Descriptive Study of Health Promotion Activities Related to Tobacco Cessation Utilized by Military Nurse Practitioners PB - Uniformed Services University of the Health Sciences (USUHS) AB - The military environment places strong emphasis on the importance of optimal physical fitness in order to meet the demands of deployed readiness for missions of national and international peace and freedom. Tobacco use in the active duty population remains above the targeted goal of 20% set by the Healthy People 2000 Objectives. The Department of Defense has issued directives which direct health care providers to address and provide intervention regarding tobacco topics. The purpose of this study was to describe the health promotion activities related to tobacco cessation utilized by Air Force nurse practitioners (NP). A questionnaire was developed to elicit information about health promotion activities Air Force NPs use in order to meet Healthy People 2000 Objectives with regards to tobacco cessation. It consisted of four parts: demographic data, clinical practice setting, nurse practitioner education, and nurse practitioner activities relating to tobacco cessation. The questionnaire was evaluated by a two (2) NP panel of experts for face and content validity. Reliability of the tool was evaluated using a test retest methodology. The study consisted of forty seven (47) Air Force NPs serving at conus locations, functioning within their specialty area (pediatrics, adult, family, women's health, primary care). The sample was obtained through stratified random sampling techniques. Descriptive statistics were used for data analysis. Study findings suggest that NPs are involved in multiple tobacco cessation activities in their clinical practice in varying degrees and frequencies. Knowledge and skill levels differ among NPs. Inconsistencies may exist between performance of tobacco cessation activities, knowledge and skill levels, resources that may hinder or support those activities in the clinical setting, and attitudes toward tobacco users. Further research is recommended to determine correlations between research questions and between variables and to provide more complete information. AV - Order Info: UMI Order PUZ1385124 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872300&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872303 T1 - Determining the level of care provided by a family nurse practitioner during deployment. AU - Larino EA Y1 - 1997/01// N1 - Accession Number: 109872303. Language: English. Entry Date: 19980601. Revision Date: 20151008. Publication Type: Masters Thesis; research. KW - Military Deployment KW - Military Personnel KW - Family Nurse Practitioners KW - Health Care Delivery KW - Primary Health Care KW - Military Nursing KW - War KW - Research, Military KW - Neuman Systems Model KW - Surveys KW - Reliability and Validity KW - Human SP - 77 p EP - 77 p JO - Determining the Level of Care Provided by a Family Nurse Practitioner During Deployment JF - Determining the Level of Care Provided by a Family Nurse Practitioner During Deployment PB - Uniformed Services University of the Health Sciences (USUHS) AB - The purpose of this research study is to identify and describe the levels of care that could be provided by a family nurse practitioner (FNP) during a military deployment. A family nurse practitioner is an advanced practice nurse who possesses the skills necessary for the detection and management of acute self-limiting conditions and management of chronic stable conditions across an individual's lifespan. FNP activities include providing ambulatory care, guidance and counseling for families, consultation and referral, and working collaboratively with physicians. Armed forces medical surveillance outpatient data, commonly referred to as disease non-battle injuries (DNBI), collected during Operation Desert Shield and Desert Storm (ODS/DS) were used to design a questionnaire. Level of care items were developed using modifications of the levels of prevention from the Neuman Systems Model. The survey questions addressed each condition in the reported DNBI data. The questionnaire was tested for validity and reliability before it was mailed to 104 directors of FNP educational programs listed in the National Organization for Nurse Practitioner Faculties directory. Fifty-eight usable questionnaires were returned and used for the research sample. These data were analyzed to determine concensus among the respondents as to what level of care the FNP could provide for the conditions identified during a military deployment. The findings show that at least 90% of the respondents agreed that the FNP could assess, diagnose, and provide interventions for prevention and education for the conditions experienced during ODS/DS. The most significant findings were in the 'treat' and 'refer' levels of care. At least 70% of the respondents agreed that uncomplicated primary care conditions could be treated by the FNP. The need for a referral was dependent on many factors identified by the respondents including: (a) severity of the problem, (b) etiology, (c) underlying risk factors, (d) expertise and comfort level of FNP, (e) knowledge and frequency of caring for the condition, (f) specialized training, (g) level of physician support, (h) facility protocols, and (i) prescription authority. These factors could complicate a primary care condition or limit the FNP. The findings of the study describe the levels of care provided by the FNP and support a role in deployment for FNPs. AV - Order Info: UMI Order PUZ1385132 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872303&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872327 T1 - The effect of gender on the rate of metabolism of midazolam in humans using liver microsomes. AU - Hinkle KL Y1 - 1997/01// N1 - Accession Number: 109872327. Language: English. Entry Date: 19980801. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Midazolam -- Pharmacodynamics KW - Sex Factors KW - Midazolam -- Metabolism KW - Male KW - Female KW - Comparative Studies KW - Basic Research KW - Correlational Studies KW - Human SP - 73 p EP - 73 p JO - Effect of Gender on the Rate of Metabolism of Midazolam in Humans Using Liver Microsomes JF - Effect of Gender on the Rate of Metabolism of Midazolam in Humans Using Liver Microsomes PB - Uniformed Services University of the Health Sciences (USUHS) AB - Midazolam (MDZ) is a short-acting benzodiazepine used in anesthesia for its anxiolytic, sedative, and amnestic properties. MDZ has a variable and unpredictable effect among individuals, which has the potential to complicate patient care and prolong hospital stay. It has been reported that inter-individual differences in the rate of metabolism are the primary cause of variances in the drug's therapeutic effect. MDZ is metabolized almost exclusively by the cytochrome P-450 3A subfamily (CYP3A). The drug is eliminated to a major metabolite, 1'-hydroxymidazolam, which accounts for at least 70% of an administered dose. MDZ forms a minor metabolite, 4-hydroxymidazolam, which comprises about 4% of an administered dose, and is also metabolized by CYP3A. The objective of this study is to determine, using human liver microsomes, if there is a gender difference in the rate of MDZ metabolism to both 1'- and 4-hydroxymidazolam. To evaluate gender differences, microsomes from six male and six female liver donors, unsuita- ble for transplantation, were chosen. It is confirmed that both 1'- and 4-hydroxylation reactions, expressed as intrinsic clearance values, are significantly correlated to each other (r = 0.86, p < 0.001). Metabolic capacity of females, express- ed as intrinsic clearance to degrade MDZ to 1'-hydroxymidazolam, is not significantly higher than males (p < 0.06). But, when postmenopausal females are excluded, a highly significant increase in intrinsic clearance in women occurs (p < 0.001). AV - Order Info: UMI Order PUZ1389300 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872327&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872306 T1 - The effect of self efficacy on type II diabetes. AU - French KA Y1 - 1997/01// N1 - Accession Number: 109872306. Language: English. Entry Date: 19980601. Revision Date: 20150923. Publication Type: Masters Thesis; research. Instrumentation: Diabetes Self-Efficacy Scale. KW - Self-Efficacy -- Evaluation KW - Diabetes Mellitus, Type 2 -- Complications KW - Patient Education KW - Diabetic Patients KW - Self Care KW - Descriptive Research KW - Convenience Sample KW - Research, Military KW - Questionnaires KW - Self Report KW - Research Instruments KW - Descriptive Statistics KW - Hospitals, Military KW - Human SP - 60 p EP - 60 p JO - Effect of Self Efficacy on Type Ii Diabetes JF - Effect of Self Efficacy on Type Ii Diabetes PB - Uniformed Services University of the Health Sciences (USUHS) AB - Self-Care is the most critical component of the non-insulin dependent diabetic's treatment regimen. The purpose of this descriptive study was to determine the extent of perceived self-efficacy and the examine the relationship between perceived self-efficacy and demographic, disease-related, and behavior-related regimen variables. Data were collected from a convenience sample of individuals who participated in the diabetes education program at a major military medical center and consisted of answers to a self-administered questionnaire which included questions about demographic characteristics, disease-related characteristics, and behavior related to diabetes regimen adherence. The questionnaire also included the Diabetes Self-Efficacy Scale, a 21 item Likert-type tool developed specifically to measure self-efficacy in diabetics. Data were collected from 27 participants over a two month period and were analyzed and reported suing descriptive statistics. Of the 27 participants, 11 reported that they had developed at least one complication that was directly related to the diabetes disease process. Self-efficacy in the complications group was found to be markedly lower than that of the noncomplication subsample. This is consistent with self-efficacy theory. While the study did not definitively answer the questions it set out to due to small sample size and over-reliance on self-reporting, the results support the value of further investigation. AV - Order Info: UMI Order PUZ1385129 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872306&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872329 T1 - Epidural anesthesia: New computer technology used to enhance the teaching of a common anesthetic procedure. AU - Olsen DC Y1 - 1997/01// N1 - Accession Number: 109872329. Language: English. Entry Date: 19980801. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Anesthesia, Epidural -- Methods KW - Teaching Methods KW - Computer Assisted Instruction KW - Anesthesia, Epidural -- Equipment and Supplies KW - Anatomy KW - Programmed Instruction KW - Human SP - 131 p EP - 131 p JO - Epidural Anesthesia: New Computer Technology Used to Enhance the Teaching of a Common Anesthetic Procedure JF - Epidural Anesthesia: New Computer Technology Used to Enhance the Teaching of a Common Anesthetic Procedure PB - Uniformed Services University of the Health Sciences (USUHS) AB - The epidural anesthetic procedure is one of the most commonly used techniques in anesthesia. Its usefulness during labor, general surgery and for post-operative pain control is well documented. The underlying anatomy and technical skills for administering an epidural anesthetic have traditionally been taught using lectures, books, models and human materials. There are also Computer-Assisted Instruction (CAI) CD-ROMS being developed to teach regional anesthesia. Because of great changes in technology, it has recently become possible to use computers to re-create actual human anatomy by extracting data from frozen serial sections, CT and MRI scans. One way this was done was by digitizing this data from a human male and female. The National Library of Medicine originally conceived the Visible Human (VH) Project in 1986. Its initial goal was to acquire CT, MRI, and cryosections from a representative male and female specimen, in approximately one-millimeter intervals. A complete male and female were scanned and digitized but have only been available since 1995. This dataset is now available for review and manipulation to licensed individuals and institutions. High-end computers can now take this digital data and re-create the anatomical structures in a three-dimensional format. This new information can be used to generate 3-D computer models of specific regions of the body. We have developed a teaching module to enhance the learning of epidural and spinal anesthetic anatomy and procedures. This includes photographs and description of commonly used equipment such as needles and catheters. Also, sections of the Visible Human lumbosacral region and spinal canal were downloaded and displayed in cross-section, sagittal and parasagittal planes. Structures such as the vertebrae, ligaments, spinal cord and meninges were then labeled in order to train anesthetists in the basic anatomic landmarks. The lumbosacral region of the VH dataset was then volume rendered using high-tech computers and a high-end software package called Analyze TM. The result of the volume rendering was the creation of three-dimensional objects, which can be identified with labels, and manipulated by the learner. Results of this project will be available for viewing at the AANA poster session. AV - Order Info: UMI Order PUZ1389302 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872329&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872324 T1 - The frequency of use and cost of selected anesthetic induction and neuromuscular blocking agents. AU - Anderson LR Y1 - 1997/01// N1 - Accession Number: 109872324. Language: English. Entry Date: 19980801. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Succinylcholine KW - Propofol KW - Anesthesia Induction KW - Health Care Costs KW - Intubation, Intratracheal KW - Neuromuscular Blocking Agents KW - Comparative Studies KW - Surveys KW - Record Review KW - Human SP - 69 p EP - 69 p JO - Frequency of Use & Cost of Selected Anesthetic Induction & Neuromuscular Blocking Agents JF - Frequency of Use & Cost of Selected Anesthetic Induction & Neuromuscular Blocking Agents PB - Uniformed Services University of the Health Sciences (USUHS) AB - The purpose of this study was to identify the most frequently used agents for induction and neuromuscular blockade for intubation, and to identify variables which affected these choices. Anesthetic records (n=77) were obtained to examine the frequency of use of induction agents and neuromuscular blockers. Anesthesia care providers completed a survey (n=19) which provided information on induction and neuromuscular relaxation agent preferences, factors influencing their choices, and estimated costs of anesthesia induction and neuromuscular relaxation drugs. Cost estimates were compared to published costs of selected anesthesia drugs. The average cost of each of four combinations of induction and neuromuscular relaxation agents was calculated based on the average PACU time. Propofol was found to be the most frequently used agent for induction (75.3%). Succinylcholine was chosen most often for use as a neuromuscular relaxation agent (98.7%). The three most important factors influencing the choice of either agent was the physical status of the patient, the incidence of side effects produced by the drug, and the duration of action of the drug. Patients who received propofol had a shorter PACU stay (x=92.3 minutes) than those patients who received sodium thiopental (x=110.5 minutes). The estimated cost for propofol/succinylcholine per patient was $11.16 versus $2.38 for sodium thiopental/ succinylcholine. Based on a cost of $8.12 per minute for PACU care, the cost savings was estimated to be $139.00 per patient. AV - Order Info: UMI Order PUZ1389296 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872324&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872333 T1 - How do anesthesia providers assure the identity of patients receiving blood transfusion? AU - Sheppard DA Y1 - 1997/01// N1 - Accession Number: 109872333. Language: English. Entry Date: 19980801. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Patient Identification KW - Blood Transfusion KW - Nurse Anesthetists KW - Anesthesiologists KW - Questionnaires KW - Educational Status KW - Job Experience KW - Conceptual Framework KW - Descriptive Statistics KW - Descriptive Research KW - Human SP - 54 p EP - 54 p JO - How Do Anesthesia Providers Assure the Identity of Patients Receiving Blood Transfusion? JF - How Do Anesthesia Providers Assure the Identity of Patients Receiving Blood Transfusion? PB - Uniformed Services University of the Health Sciences (USUHS) AB - Introduction: The purpose of this study is to document how anesthesia providers identify patients for blood transfusion. Accurate patient identification is of paramount importance in the assurance of safe blood administration. For the last 20 years, the Food & Drug Administration (FDA) reports of transfusion-related fatalities have shown that the surgical patient is at most risk for a hemolytic transfusion reaction. Fifty-nine percent of these reported transfusion-related fatalities in the United States occurred in the surgical suite. In addition, 90% of the transfusion-related fatalities were due to clerical errors in which positive patient identification would have prevented most of the fatalities. Methods: A questionnaire was given to 71 nurse and physician anesthesia providers. Demographic data was collected to determine years of professional experience and what type of education and training the anesthesia providers has had in patient identification procedures. Descriptive statistical analysis of the data was performed. The conceptual framework of the study was based on a clinical decision-making model. Results: The respondents consisted of 44% anesthesiologist, 44% CRNAs, and 12% SRNAs. Overall, 20% of the anesthesia providers indicated they had no formal training in patient identification procedures. Thirty-seven percent of the anesthesia providers were not sure if their hospital had written policies and procedures for patient identification. Only 66% of the anesthesia providers positively identified a patient for a blood transfusion by checking the wristband. Once the wristband had been removed, 54% of the anesthesia providers verified patient identity for a blood transfusion by comparing the blood unit to the patient's chart. Forty-eight percent verified the blood unit with the previously removed wristband and approximately 6% failed to verify proper identity of the patient once the wristband had been removed. Conclusion: These data indicated that more than 30% of anesthesia providers may not adequately identify patients prior to starting a blood transfusion. This may in part explain the high frequency of transfusion-related fatalities occurring in the surgical suites. Anesthesia providers need to be educated in the proper procedure for patient identification for blood administration. This study verifies the need for continuous education of anesthesia providers in proper patient identification to help assure safe blood administration. AV - Order Info: UMI Order PUZ1389305 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872333&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872339 T1 - In Vitro Determination of Bicarbonate Dosage to Alkalinize Local Anesthetics to Physiologic pH. AU - Strand KM Y1 - 1997/01// N1 - Accession Number: 109872339. Language: English. Entry Date: 19980801. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Anesthetics, Local -- Administration and Dosage KW - Sodium Bicarbonate -- Administration and Dosage KW - Dosage Calculation KW - In Vitro Studies KW - Pearson's Correlation Coefficient KW - Human SP - 57 p EP - 57 p JO - In Vitro Determination of Bicarbonate Dosage to Alkalinize Local Anesthetics to Physiologic Ph JF - In Vitro Determination of Bicarbonate Dosage to Alkalinize Local Anesthetics to Physiologic Ph PB - Uniformed Services University of the Health Sciences (USUHS) AB - The addition of sodium bicarbonate to local anesthetic solutions immediately prior to their administration has been advocated as a method to reduce latency and prolong duration of regional blockade. The purpose of this study was to determine the appropriate dosages of sodium bicarbonate required to elevate the pH of local anesthetic solutions to physiologic pH (~7.4), while maximizing time to precipitation formation. This descriptive study investigated the alkalinization of four local anesthetic solutions (Lidocaine, Mepivacaine, Bupivacaine, and Chloroprocaine-HCL) before and after freshly added epinephrine. Final pH measurement and precipitation formation were recorded after the addition of incremental doses of sodium bicarbonate (8.4 % or 1 meq/ml). Mean final pH (+/- SD) and mean precipitation times (+/- SD) were calculated. Sodium bicarbonate doses required to achieve physiologic pH were identified. Pearson Product-Moment Correlation Coefficients were calculated to express the linear relationship between bicarbonate dose and mean onset time to precipitation formation. All of the local anesthetic solutions studied, with the exception of Mepivacaine (2%), with and without epinephrine, and all Bupivacaine solutions, were alkalinized to physiologic pH without the rapid formation of precipitate. Rapid precipitation terminated the buffering capacity of the sodium bicarbonate in the cases of Mepivacaine (2%), with and without epinephrine, and all Bupivacaine solutions; consequently, these solutions never reached physiologic pH. Although, freshly added epinephrine did not alter the dose of sodium bicarbonate required to achieve physiologic pH, epinephrine did influence precipitation onset time. Pearson Correlation Coefficients were significant ( p < .05) for all solutions except Bupivacaine (0.25%) with epinephrine, and Bupivacaine (0.5%), with and without epinephrine. Mean onset times to precipitation vary with local anesthetic solution, concentration of the solution, the presence of freshly added epinephrine and dose of sodium bicarbonate added to the solution. Most local anesthetic solutions, regardless of the addition of epinephrine, can be safely alkalinized to physiologic pH without rapid precipitate formation. Appropriate sodium bicarbonate doses for addition to each local anesthetic studied, mean final pH, and mean precipitation times can be utilized by anesthesia providers who choose to alkalinize local anesthetic solutions prior to their administration. AV - Order Info: UMI Order PUZ1389308 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872339&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872326 T1 - Instructional methods for human anatomy and cell biology in nurse anesthesia graduate programs: A survey with a focus on regional anesthesia. AU - Burnette AG Y1 - 1997/01// N1 - Accession Number: 109872326. Language: English. Entry Date: 19980801. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Education, Nurse Anesthesia KW - Anatomy -- Education KW - Curriculum KW - Teaching Methods KW - Cell Physiology KW - Surveys KW - Mail KW - Content Validity KW - Descriptive Research KW - United States KW - Computer Assisted Instruction KW - Research, Military KW - Human SP - 97 p EP - 97 p JO - Instructional Methods for Human Anatomy & Cell Biology in Nurse Anesthesia Graduate Programs: A Survey With a Focus on Regional Anesthesia JF - Instructional Methods for Human Anatomy & Cell Biology in Nurse Anesthesia Graduate Programs: A Survey With a Focus on Regional Anesthesia PB - Uniformed Services University of the Health Sciences (USUHS) AB - Advanced anatomy instruction is required in nurse anesthesia programs by the Council on Accreditation of Nurse Anesthesia Educational Programs (COA). This study provides a descriptive analysis on how anatomy is taught in nurse anesthesia programs in the United States with special emphasis on regional anesthesia. A survey consisting of 18 questions regarding anatomy course curriculum and regional anesthesia training was mailed to the nurse anesthesia programs (n=87) accredited by the COA. Supporting evidence for content validity and reliability was obtained. A total of 78 programs (90%) responded to the survey. The majority of programs 49 (63%) teach a specific course in human anatomy with 14 (18%) of those programs teaching a combined anatomy and physiology course. The mean hours spent in lecture was 5 hours per week. More variability in the lab hours existed with a range of 0-20 hours, a mode of 0 hours and a mean of 2 hours per week. Twenty-two (28%) of the programs use human specimens with 10 (13%) using prosected specimens, 2 (3%) using dissection only and 10 (13%) using a combination of both. Of the programs using human specimens, 17 (22%) have instructors demonstrate regional anesthetic techniques in situ, and 3 (4%) of the programs afford the students the opportunity to practice regional anesthetic techniques on the specimens. Computer assisted instruction (CAI) is used by 14 (18%) of the programs with many more planning to incorporate this new technique in the near future. With such disparity among programs, a need for further investigation regarding the efficacy of different instructional techniques is warranted. AV - Order Info: UMI Order PUZ1389297 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872326&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872332 T1 - The prevalence of bacterial contamination in the ventilator bellows of anesthesia machines. AU - Simmons VL Y1 - 1997/01// N1 - Accession Number: 109872332. Language: English. Entry Date: 19980801. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Bacterial Contamination KW - Ventilators, Mechanical KW - Equipment Contamination KW - Prevalence KW - Hospitals KW - Prospective Studies KW - Research, Military KW - Microbiological Techniques KW - Human SP - 29 p EP - 29 p JO - Prevalence of Bacterial Contamination in the Ventilator Bellows of Anesthesia Machines JF - Prevalence of Bacterial Contamination in the Ventilator Bellows of Anesthesia Machines PB - Uniformed Services University of the Health Sciences (USUHS) AB - The anesthesia breathing circuit has been inconclusively implicated as a source of postoperative, hospital-acquired respiratory infections that follow surgery. Little investigation of the prevalence of bacterial contamination in the anesthesia ventilator bellows has been done. The purpose of this study was to determine the prevalence of bacterial contamination in the ventilator bellows of anesthesia machines. A prospective study of 12 anesthesia machines at a major medical facility was conducted to determine whether ventilator bellows are bacterially contaminated and to quantify and identify any bacterial organisms present. Two sets of samples were collected. Twelve machines were sampled the morning and 10 machines were sampled in the afternoon after surgery was completed. Using sterile culturette bacterial swabs and aseptic technique, samples were collected by swabbing the internal diameter of the ventilator bellows. The morning samples and 80% of the afternoon samples were negative for bacterial growth. Two (20%) of the afternoon samples had 3+ growth or greater than 100 colony forming units of Staphylococcus epidermidis indicating external contamination during collection or laboratory processing. From these findings, the ventilator bellows do not appear to harbor pathogenic microorganisms. These data support that the present methodology of cleaning and sterilization of the anesthesia machine at this facility is effective. AV - Order Info: UMI Order PUZ1389306 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872332&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872331 T1 - The relationship between Air Force anesthesia providers job satisfaction and anticipated turnover. AU - Stamps DJ Y1 - 1997/01// N1 - Accession Number: 109872331. Language: English. Entry Date: 19980801. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Job Satisfaction -- Evaluation KW - Personnel Turnover KW - Nurse Anesthetists KW - Anesthesiologists KW - Military Personnel KW - United States Air Force KW - Research Instruments KW - Research, Military KW - Descriptive Research KW - Data Analysis, Statistical KW - Questionnaires KW - Pearson's Correlation Coefficient KW - Correlational Studies KW - Human SP - 90 p EP - 90 p JO - Relationship Between Air Force Anesthesia Providers Job Satisfaction & Anticipated Turnover JF - Relationship Between Air Force Anesthesia Providers Job Satisfaction & Anticipated Turnover PB - Uniformed Services University of the Health Sciences (USUHS) AB - The purpose of this study was to investigate the relationship between Air Force (AF) anesthesia providers job satisfaction and anticipated turnover. The study replicates for the AF the 1995 study by Cowan entitled The relationship Between Navy Anesthesia Providers Job Satisfaction and Anticipated Turnover. Comparisons between AF and Navy study results were made. Five year projections for AF anesthesia providers show high attrition rates combined with expected manpower shortages. Job satisfaction of anesthesia providers has been shown to impact turnover rates (Cowan, 1995). The research instrument was a 57 item questionnaire utilized by Cowan and was sent to all AF anesthesia providers on active duty, N = 322. Response rate obtained was 49.3% N = 159, with 76.1% (121/159) of respondents being CRNAs and 23.9% (38/159) being anesthesiologists. The descriptive, exploratory design utilized a combination of demographic and questionnaire results to report significant data on how job satisfaction impacts anticipated turnover of AF anesthesia providers. Initial expectation of service was found to be positively correlated with anticipated turnover, (r = .171, p <.05). Professional/occupational job satisfaction was also positively correlated, (r= .203, p < .05). In contrast, Cowan found only professional/occupational job satisfaction to be statistically significant, r = .47, p < .0001. 12.9% of the variance in anticipated turnover was accounted for by interpersonal relationships and the combination of interpersonal relationships and professional/occupational job satisfaction. Cowan found that mobility factors and professional/occupational job satisfaction accounted for 27% of the variance in anticipated turnover of Navy anesthesia providers. AV - Order Info: UMI Order PUZ1389307 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872331&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Linster, Bruce G. AD - US Air Force Academy T1 - Income Tax Compliance and Evasion: A Graphical Approach JO - Southern Economic Journal JF - Southern Economic Journal Y1 - 1997/01// VL - 63 IS - 3 SP - 788 EP - 796 SN - 00384038 N1 - Accession Number: 0413739; Keywords: Compliance; Evasion; Income Tax Evasion; Income Tax; Tax Compliance; Tax Evasion; Tax; Publication Type: Journal Article; Update Code: 199706 N2 - Although income tax evasion has been analyzed, the implications of heterogeneity in risk aversion have not been examined. This paper explores the ramifications of diversity in the population. Although using homogeneous populations is clearly problematic, it made the tax compliance problem tractable. This analysis applies graphical techniques to this question, yielding more robust results. Interestingly, the equilibrium proportion of individuals who evade their tax liability is independent of the distribution of risk aversion while the audit probability is not. Further, increasing the penalty for evasion has an indeterminate effect on equilibrium audit probability. Other comparative static results are discussed. KW - Tax Evasion H26 KW - Personal Income and Other Nonbusiness Taxes and Subsidies; includes inheritance and gift taxes H24 L3 - http://journal.southerneconomic.org/loi/soec UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0413739&site=ehost-live&scope=site UR - http://journal.southerneconomic.org/loi/soec DP - EBSCOhost DB - ecn ER - TY - THES ID - 109872304 T1 - United States Air Force health care provider practices: Skin testing for Mycobacterium tuberculosis. AU - Heisterman NJ Y1 - 1997/01// N1 - Accession Number: 109872304. Language: English. Entry Date: 19980601. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Skin Tests -- Methods KW - Tuberculosis -- Prevention and Control KW - Health Knowledge -- Evaluation KW - Primary Health Care KW - Health Personnel KW - Military Personnel KW - United States Air Force KW - Descriptive Research KW - Correlational Studies KW - Convenience Sample KW - Questionnaires KW - Descriptive Statistics KW - Research, Military KW - Human SP - 81 p EP - 81 p JO - United States Air Force Health Care Provider Practices: Skin Testing for Mycobacterium Tuberculosis JF - United States Air Force Health Care Provider Practices: Skin Testing for Mycobacterium Tuberculosis PB - Uniformed Services University of the Health Sciences (USUHS) AB - Mycobacterium tuberculosis (TB) is an infectious disease of global concern. The World Health Organization (WHO) estimates that 20 million active tuberculosis cases infect another 50 to 100 million people each year. Military medical units have traditionally focused on the mastery of casualty care. Data shows traumatic injuries represented a mere fraction of the medical care provided during Operation Desert Shield/Desert Storm. In addition, humanitarian and peace-keeping missions have become an important part of recent military missions. Primary care and treatment of infectious diseases, a major focus of nurse practitioner (NP) practice, are becoming the challenges of today's deployments. The purpose of this descriptive correlational study was to describe Air Force health care provider's knowledge of TB skin testing principles and investigate relationships between demographic variables and that knowledge. Respondents were a convenience sample of 172 Air Force health care providers at a mid-level medical treatment facility including: medical doctors (MD), doctors of osteopathy (DO), physician assistants (PA), nurse practitioners (NP) and independent duty medical technicians (IDMT). The study questionnaire consisted of ten demographic data questions and eight multiple choice questions concerning current guidelines for tuberculosis skin testing. Data were analyzed using descriptive and inferential statistical methodology. Results were reported in an effort to describe the current demographics, state of knowledge and relationships between the two in a sample Air Force health care providers. This study indicates that only 25% of these Air Force health care providers would administer, read and interpret the Mantoux Purified Protein Derivative skin test correctly, according to current guidelines. AV - Order Info: UMI Order PUZ1385131 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872304&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872297 T1 - Weight loss behaviors used by active duty Air Force personnel to maintain compliance with weight control standards. AU - Decker EA Y1 - 1997/01// N1 - Accession Number: 109872297. Language: English. Entry Date: 19980601. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Weight Loss KW - Weight Control -- Methods KW - Active Duty Personnel KW - Health Behavior KW - United States Air Force KW - Descriptive Research KW - Surveys KW - Male KW - Female KW - Research, Military KW - Human SP - 92 p EP - 92 p JO - Weight Loss Behaviors Used by Active Duty Air Force Personnel to Maintain Compliance With Weight Control Standards JF - Weight Loss Behaviors Used by Active Duty Air Force Personnel to Maintain Compliance With Weight Control Standards PB - Uniformed Services University of the Health Sciences (USUHS) AB - Anecdotal comments suggest that military personnel utilize weight loss techniques that may be detrimental to their health. Whereas Sweeney and Bonnabeau (1990) studied a group of reserve Army medics to determine what they did to maintain weight standards, this descriptive study was designed to uncover the weight loss methods used by active duty Air Force personnel and to describe the frequency and duration that these methods were used. Demographic data were included to determine if differences existed between the various groups. Data on activity levels were also collected. Fifty-five individuals completed the survey. The data collected indicated that unhealthy weight loss behaviors were being utilized. The demographic data show that young females are most likely to engage in the pathogenic behaviors. The results of this study support the need for ongoing weight loss interventions. AV - Order Info: UMI Order PUZ1385128 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872297&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872310 T1 - What is the organizational culture regarding use of family nurse practitioners as perceived by selected Objective Medical Group executives. AU - O'Rourke KM Y1 - 1997/01// N1 - Accession Number: 109872310. Language: English. Entry Date: 19980601. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Military Personnel KW - Family Nurse Practitioners KW - Organizational Culture KW - Professional Role KW - United States Air Force KW - Descriptive Research KW - Surveys KW - Mail KW - Nurse Administrators KW - Research, Military KW - Health Facility Administrators KW - Human SP - 118 p EP - 118 p JO - What is the Organizational Culture Regarding Use of Family Nurse Practitioners as Perceived by Selected Objective Medical Group Executives JF - What is the Organizational Culture Regarding Use of Family Nurse Practitioners as Perceived by Selected Objective Medical Group Executives PB - Uniformed Services University of the Health Sciences (USUHS) AB - Current political and social climate offer both challenges and facilitators to the Air Force (AF) implementation of Family Nurse Practitioner (FNP) services. Whether or not FNPs can successfully integrate their advanced practice role within the current Air Force health care culture not only depends upon the core competencies obtained through their formal educational program but extends into Surgeon General (SG) role expectations of the FNP role. Furthermore, there must be the identification of a need for FNP services at the local Objective Medical Group (OMG) level. The purpose of this descriptive study was to assess and describe the organizational culture as perceived by the Chief of Medical Staff (CMS), Chief Nurse Executive (CNE), Administrator (SGA) and Medical Operations Squadron Commander (MDOS/CC). Data collection was conducted through a mailed survey to selected health care executives (N=224) at 56 OMGs. A response rate of 76% indicated study relevancy. Almost three quarters of current OMG executives support the addition of FNP services. Culture change must be initiated through top management. Highest consensus among OMG executives was found in the agreement that preventive care would be increased through the addition of FNPs to provider staff. Given the current instrument limitations, executives generously qualified their survey choices over and above what was asked for by survey instructions. The military FNP role has given OMG executives additional choices in forecasting the most appropriate provider-mix for the care recipients. Economic and consumer outcomes from military FNP services are not yet known. Further study is needed to understand how organizational culture impacts FNP role expectation/fulfilment. AV - Order Info: UMI Order PUZ1385136 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872310&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Wakin, Malham M. T1 - The Holocaust and Strategic Bombing: Genocide and Total War in the 20th Century. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) J1 - Armed Forces & Society (0095327X) PY - 1996///Winter96 Y1 - 1996///Winter96 VL - 23 IS - 2 M3 - Book Review SP - 299 EP - 301 PB - Sage Publications Inc. SN - 0095327X AB - The article reviews the book "The Holocaust and Strategic Bombing: Genocide and Total War in the 20th Century," by Eric Markusen and David Kopf. KW - HOLOCAUST & Strategic Bombing: Genocide & Total War in the 20th Century, The (Book) KW - MARKUSEN, Eric KW - KOPF, David KW - GENOCIDE KW - NONFICTION N1 - Accession Number: 9703212818; Source Information: Winter96, Vol. 23 Issue 2, p299; Subject Term: HOLOCAUST & Strategic Bombing: Genocide & Total War in the 20th Century, The (Book); Subject Term: MARKUSEN, Eric; Subject Term: KOPF, David; Subject Term: GENOCIDE; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; ; Full Text Word Count: 1022; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=9703212818&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 107311789 T1 - Thawing the frozen shoulder: the 'patient' patient. AU - Miller MD AU - Wirth MA AU - Rockwood CA Jr. Y1 - 1996/10//1996 Oct N1 - Accession Number: 107311789. Language: English. Entry Date: 19970201. Revision Date: 20150711. Publication Type: Journal Article; consumer/patient teaching materials; research. Journal Subset: Allied Health; Biomedical; Peer Reviewed; USA. NLM UID: 7806107. KW - Joint Diseases -- Rehabilitation KW - Shoulder KW - Bursitis -- Rehabilitation KW - Patient Education KW - Shoulder -- Pathology KW - Range of Motion KW - Therapeutic Exercise KW - Treatment Outcomes KW - Retrospective Design KW - Record Review KW - Interviews KW - Questionnaires KW - Adult KW - Middle Age KW - Aged KW - Male KW - Female KW - Human SP - 849 EP - 853 JO - Orthopedics JF - Orthopedics JA - ORTHOPEDICS VL - 19 IS - 10 CY - Thorofare, New Jersey PB - SLACK Incorporated AB - Many different modalities have been advocated for the treatment of frozen shoulder (adhesive capsulitis), some of which can be associated with complications and morbidity. We retrospectively reviewed 50 patients with adhesive capsulitis treated by the senior author over a 10-year period. Treatment consisted of closely monitored home therapy using moist heat and antiinflammatory medication, and a physician-directed rehabilitation program. Without exception, every patient regained a significant amount of motion and returned to activities of daily living without pain. SN - 0147-7447 AD - Department of Orthopedics, US Air Force Academy Hospital, Colorado U2 - PMID: 8905857. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107311789&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Simon, James J. T1 - THE ROLE OF THE ADMINISTRATIVE COUNCIL OF MOUNT LEBANON IN THE CREATION OF GREATER LEBANON: 1918 -- 1920. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 1996///Fall96 VL - 13 IS - 2 M3 - Article SP - 119 EP - 171 SN - 87553449 AB - Between 1918 and 1920 the Administrative Council of Mount Lebanon (a 'majlis,' or parliament) drafted significant resolutions that proposed a Greater Lebanon and sent Lebanese delegations to the Paris Peace Conference. The council's conception of Greater Lebanon was close to the eventual postwar settlement that was made. KW - ADMINISTRATIVE economic councils KW - LEBANON -- History KW - SOVEREIGNTY (Political science) KW - INTERNATIONAL relations KW - STATE formation KW - WORLD War, 1914-1918 -- Peace KW - LEBANON, Mount (Lebanon) KW - LEBANON KW - Administrative Council of Mount Lebanon N1 - Accession Number: 9708292495; Simon, James J. 1; Affiliations: 1 : Captain, United States Air Force, Department of History, USAF Academy, Colorado Springs, CO 80840-5000; Source Info: Fall96, Vol. 13 Issue 2, p119; Historical Period: 1918 to 1920; Subject Term: ADMINISTRATIVE economic councils; Subject Term: LEBANON -- History; Subject Term: SOVEREIGNTY (Political science); Subject Term: INTERNATIONAL relations; Subject Term: STATE formation; Subject Term: WORLD War, 1914-1918 -- Peace; Subject: LEBANON, Mount (Lebanon); Subject: LEBANON; Number of Pages: 53p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hia&AN=9708292495&site=ehost-live&scope=site DP - EBSCOhost DB - hia ER - TY - JOUR ID - 107307459 T1 - Subclinical vitamin A deficiency: a potentially unrecognized problem in the United States. AU - Stephens D AU - Jackson PL AU - Gutierrez Y Y1 - 1996/09//1996 Sep-Oct N1 - Accession Number: 107307459. Language: English. Entry Date: 19970101. Revision Date: 20150818. Publication Type: Journal Article; CEU; exam questions; questionnaire/scale; tables/charts. Journal Subset: Core Nursing; Nursing; Peer Reviewed; USA. NLM UID: 7505804. KW - Vitamin A KW - Deficiency Diseases -- In Infancy and Childhood KW - Diet -- Evaluation -- In Infancy and Childhood KW - Questionnaires KW - Nutritional Requirements -- In Infancy and Childhood KW - Food KW - Diet -- In Infancy and Childhood KW - Pediatric Nursing KW - Education, Continuing (Credit) KW - Measles -- Drug Therapy -- In Infancy and Childhood KW - Vitamin A -- Therapeutic Use -- In Infancy and Childhood KW - Child KW - Measles -- Complications -- In Infancy and Childhood KW - Dietary Supplementation -- In Infancy and Childhood KW - Vitamin A -- Administration and Dosage -- In Infancy and Childhood KW - Vitamin A -- Physiology KW - Risk Factors KW - Infant KW - Child, Preschool SP - 377 EP - 456 JO - Pediatric Nursing JF - Pediatric Nursing JA - PEDIATR NURS VL - 22 IS - 5 CY - Pitman, New Jersey PB - Jannetti Publications, Inc. AB - Vitamin A deficiency in its subclinical form is a world health problem in young children. The problem is probably under recognized in the United States and other developed countries who do not normally consider their citizens to be malnourished. Lack of a simple screening test to measure subclinical deficiency adds to this problem. Consequently, focused dietary assessment of vitamin A intake by a Food Frequency Questionnaire (FFQ) is a necessary component of health care maintenance, especially for toddlers and preschool age children. Dietary counseling and vitamin supplementation for high risk children is a necessary health promotion intervention. SN - 0097-9805 AD - United States Air Force, 2nd Medical Group, Barksdale Air Force Base, LA U2 - PMID: 9087069. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107307459&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 107308426 T1 - Exercise adviser. Strengthening the hip abductors. AU - Ross M Y1 - 1996/09// N1 - Accession Number: 107308426. Language: English. Entry Date: 19970101. Revision Date: 20150711. Publication Type: Journal Article; pictorial. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 0427461. KW - Muscle Strengthening -- Methods KW - Hip -- Physiology KW - Exercise SP - 16x EP - 16x JO - Physician & Sportsmedicine JF - Physician & Sportsmedicine JA - PHYSICIAN SPORTSMED VL - 24 IS - 9 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd SN - 0091-3847 AD - 39th Medical Group of the United States Air Force at Incirlik Air Base, Turkey UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107308426&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 1996-05293-001 AN - 1996-05293-001 AU - Mabry, T. R. AU - McCarty, R. AU - Gold, P. E. AU - Foster, T. C. T1 - Age and stress history effects on spatial performance in a swim task in Fischer-344 rats. JF - Neurobiology of Learning and Memory JO - Neurobiology of Learning and Memory JA - Neurobiol Learn Mem Y1 - 1996/07// VL - 66 IS - 1 SP - 1 EP - 10 CY - US PB - Academic Press SN - 1074-7427 SN - 1095-9564 N1 - Accession Number: 1996-05293-001. PMID: 8661246 Other Journal Title: Behavioral & Neural Biology; Behavioral Biology; Communications in Behavioral Biology. Part A. Original Articles. Partial author list: First Author & Affiliation: Mabry, T. R.; US Air Force Academy, Dept of Behavior Science & Leadership, CO, US. Other Publishers: Elsevier Science. Release Date: 19960101. Correction Date: 20130506. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aging; Habituation; Spatial Learning; Spatial Memory; Stress Reactions. Minor Descriptor: Physiological Stress; Rats. Classification: Learning & Motivation (2420). Population: Animal (20). Methodology: Empirical Study. Page Count: 10. Issue Publication Date: Jul, 1996. AB - Investigated whether prior habituation to water immersion would ameliorate age-related deficits in learning and memory in a swim task in rats. In the spatial task, prior habituation to water immersion ameliorated deficits in acquisition within each day but not across days. Results obtained with the 24-hr interval confirm the rapid forgetting characteristic of aged rats in many tasks. Stress-habituation procedures reduced age-related deficits. Findings indicate that aspects of age-related impairments in the swim task, often attributed to primary age-related deficits in learning and memory processes, may be secondary to age-related differences in stress responses to water immersion. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - prior habituation & stress responses to water immersion KW - learning & memory in spatial task KW - aged rats KW - 1996 KW - Aging KW - Habituation KW - Spatial Learning KW - Spatial Memory KW - Stress Reactions KW - Physiological Stress KW - Rats KW - 1996 DO - 10.1006/nlme.1996.0038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1996-05293-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Ciccotello, Conrad S. AU - Grant, C. Terry AD - US Air Force Academy AD - U Southern MS T1 - Information Pricing: The Evidence from Equity Mutual Funds JO - Financial Review JF - Financial Review Y1 - 1996/05// VL - 31 IS - 2 SP - 365 EP - 380 SN - 07328516 N1 - Accession Number: 0389805; Keywords: Mutual Fund; Stocks; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 199609 N2 - The theory of information pricing implies that the benefits from obtaining costly information should be offset by the costs. In the case of mutual funds, this theory suggests that trades by fund managers should take place at prices that compensate their clients for the managers' costs of becoming informed. This paper controls for risk fund size, and age, to assess the relationship of a fund's information costs to its performance. The findings show that stock funds charging the highest expenses generally earn returns insignificantly different from funds charging the lowest expenses. This lends support to the theory of information pricing. The findings are also indicative of an efficient market, given that information is costly. KW - Pension Funds; Non-bank Financial Institutions; Financial Instruments; Institutional Investors G23 KW - Asset Pricing; Trading Volume; Bond Interest Rates G12 L3 - http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291540-6288/issues UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0389805&site=ehost-live&scope=site UR - http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291540-6288/issues DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 107391329 T1 - Chronic fatigue syndrome: new insights into an enigmatic illness... recertification series. AU - Griffith CJ Y1 - 1996/02//1996 Feb N1 - Accession Number: 107391329. Language: English. Entry Date: 19961201. Revision Date: 20150818. Publication Type: Journal Article; CEU; exam questions; tables/charts. Journal Subset: Allied Health; Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 8403486. KW - Fatigue Syndrome, Chronic KW - Education, Continuing (Credit) KW - Fatigue Syndrome, Chronic -- Epidemiology KW - Fatigue Syndrome, Chronic -- Diagnosis KW - Fatigue Syndrome, Chronic -- Therapy KW - Fatigue Syndrome, Chronic -- Drug Therapy KW - Centers for Disease Control and Prevention (U.S.) SP - 38 EP - 56 JO - Physician Assistant JF - Physician Assistant JA - PHYSICIAN ASSIST VL - 20 IS - 2 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - Chronic fatigue syndrome (CFS) is an enigmatic illness that has defied definition. It affects a number of body systems including the neuropsychiatric, musculoskeletal, endocrine, immunologic, and other systems. CFS produces a diverse set of symptoms, the most common being persistent or relapsing fatigue. No laboratory test or imaging modality is specific for CFS. Treatment is largely empirical and directed toward a given patient's symptomatology. The natural history of CFS is partial remission relative to the premorbid state. SN - 8750-7544 AD - United States Air Force Clinic, Goodfellow Air Force Base, Texas UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107391329&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - CHAP AU - Auskink, John AU - Wise, David A. AD - US Air Force Academy AD - Harvard U and NBER A2 - Wise, David A. T1 - The Military Pension, Compensation, and Retirement of U.S. Air Force Pilots T2 - Advances in the economics of aging PB - National Bureau of Economic Research Project Report series. PB - Chicago and London: PB - University of Chicago Press Y1 - 1996/// SP - 83 EP - 109 N1 - Accession Number: 0465538; Reviewed Book ISBN: 0-226-90302-8; Keywords: Pension; Retirement; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Collective Volume Article; Update Code: 199807 KW - Public Sector Labor Markets J45 KW - Retirement; Retirement Policies J26 KW - Nonwage Labor Costs and Benefits; Retirement Plans; Private Pensions J32 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0465538&site=ehost-live&scope=site DP - EBSCOhost DB - ecn ER - TY - THES ID - 109872315 T1 - Agents used for induction of anesthesia. AU - Stanek M Y1 - 1996/01// N1 - Accession Number: 109872315. Language: English. Entry Date: 19980601. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Central Nervous System Depressants -- Administration and Dosage KW - Neuromuscular Blocking Agents -- Administration and Dosage KW - Anesthesia Induction KW - Anesthesiologists KW - Nurse Anesthetists KW - Military Personnel KW - Multimethod Studies KW - Job Experience KW - Descriptive Research KW - Record Review KW - Retrospective Design KW - Interviews KW - Research, Military KW - Human SP - 66 p EP - 66 p JO - Agents Used for Induction of Anesthesia JF - Agents Used for Induction of Anesthesia PB - Uniformed Services University of the Health Sciences (USUHS) AB - Currently, a variety of agents are available to anesthesia providers for induction and intubation for general anesthesia. This variety provides a flexibility to the provider that has not been previously studied. One aim of this study was to show which intravenous induction and neuromuscular blockers for general anesthesia and intubation are currently being used among a sample of military providers. The agents identified for induction were propofol, thiopental, and fentanyl. The agents identified for neuromuscular intubation blockers were succinylcholine, mivacron, vecuronium, atracurium, arduan, pavulon, and zemuron. It was also an aim of this study to determine if experience of the provider made a difference in the agent chosen. Both quantitative and qualitative methods were employed in a descriptive research design. Quantitative data were collected from a retrospective chart review of cases in which anesthesia was provided. The qualitative data were collected by personal interviews with each anesthesia provider, using case scenarios developed by the researcher. A comparison of quantitative and qualitative data of induction and intubation agents collected from CRNAs and MDAs according to experience of both types of providers was analyzed to provide meaningful data. The difference in choice of agents by experience was found not to be significant. AV - Order Info: UMI Order PUZ1385142 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872315&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874043 T1 - American Diabetic Association Standards in an Air Force medical clinic. AU - Flagg DK Y1 - 1996/01// N1 - Accession Number: 109874043. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. Instrumentation: Diabetes Quality Assurance Checklist. KW - Diabetes Mellitus -- Prevention and Control KW - American Diabetes Association -- Standards KW - Health Care Delivery KW - Patient Education KW - Ambulatory Care Facilities KW - Descriptive Research KW - Record Review KW - Quality Assurance KW - Research Instruments KW - Research, Military KW - Human SP - 98 p EP - 98 p JO - American Diabetic Association Standards in an Air Force Medical Clinic JF - American Diabetic Association Standards in an Air Force Medical Clinic PB - Uniformed Services University of the Health Sciences (USUHS) AB - One in ten of the population over the age of 65 has been diagnosed with diabetes mellitus, Type II diabetes accounting for 90% of these cases. Diabetes, the seventh leading cause of visits to primary care physicians, requites continuing medical care and patient education. Long term management presents a challenge to the military health care system faced with frequent provider turnovers. Standards of care not only define quality of care but provide a means to decrease the threat on comprehensive care associated with these turnovers. This descriptive quantitative study measured adherence to ten American Diabetic Association Standards of Medical Care in a military medical clinic utilizing the Diabetes Quality Assurance Checklist. Ratings of good to excellent were obtained in 43 percent of the medical records. The DQA Checklist went beyond these recommended ADA Standards to include important elements of care not routinely included in the continuing diabetic treatment regimen. Ten percent of the records obtained ratings of good to excellent in overall adherence to elements of continuing diabetic care listed on the DQA Checklist. AV - Order Info: 1391255 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874043&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872309 T1 - Application of a data base to a military pain clinic. AU - Palmer GE Y1 - 1996/01// N1 - Accession Number: 109872309. Language: English. Entry Date: 19980601. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Minimum Data Set -- Evaluation KW - Chronic Pain KW - Ambulatory Care Facilities KW - Military Personnel KW - Record Review KW - Retrospective Design KW - Research, Military KW - Descriptive Statistics KW - Female KW - Aged KW - Middle Age KW - Chronic Pain -- Prevention and Control KW - Human SP - 36 p EP - 36 p JO - Application of a Data Base to a Military Pain Clinic JF - Application of a Data Base to a Military Pain Clinic PB - Uniformed Services University of the Health Sciences (USUHS) AB - A minimum data set is a tool for abstracting a uniform collection of essential data elements from a patient record. This type of documentation will aid in cost containment, trending outcomes, stimulation of research, and promoting continuity of care. The purpose of this study is to analyze a sample of new consultation patient records collected over a 14 month period from a military chronic pain clinic. This is accomplished by developing a selected minimum data set and used to collect the data. The methodology includes a retrospective study of 57 chronic pain clinic patient consultation records from a military facility. The study found that the largest percentage of patients who visit the chronic pain clinic are 60-79 years of age and female. The most frequent location of pain was abdominal, axillary/upper arm, and back. The most frequent diagnosis was lower back pain. Treatment modalities included regional blocks, medication, physical therapy, and psychotherapy. The most frequent regional block performed was the lumbar epidural steroid injection. Many pain programs are based on a holistic or somatic model. This military chronic pain clinic is based on the somatic model. Possibilities of future research include the comparison of regional block vs. medication treatment and the role of certified registered nurse anesthetists in a chronic pain clinic. AV - Order Info: UMI Order PUZ1385137 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872309&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874042 T1 - A descriptive study of military nurse practitioner practice settings and clinical practice activities. AU - Fuller KA Y1 - 1996/01// N1 - Accession Number: 109874042. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Military Personnel KW - Family Nurse Practitioners KW - Work Environment KW - Advanced Nursing Practice KW - United States Air Force KW - United States Army KW - United States Navy KW - Descriptive Research KW - Questionnaires KW - Research, Military KW - Human SP - 101 p EP - 101 p JO - Descriptive Study of Military Nurse Practitioner Practice Settings & Clinical Practice Activities JF - Descriptive Study of Military Nurse Practitioner Practice Settings & Clinical Practice Activities PB - Uniformed Services University of the Health Sciences (USUHS) AB - The purpose of this study is to describe the practice settings of military nurse practitioners (NP) and their clinical practice activities. The patterns of behavior of the NP can be seen merging with/diverging from traditional nursing as well as medical activities. To elicit practice setting and clinical activities information from military NPs a questionnaire was used. It consisted of two parts: demographic information and practice activities. The questionnaires were mailed to active duty Air Force, Army and Navy NPs who's names and duty locations were obtained from the respective services. A description of the data is presented. Describing the military NPs practice setting may help to identify the context within which the military NP role participates. Describing the clinical practice activities may likewise provide an understanding of the behavioral characteristics needed to define the role further. AV - Order Info: 1391256 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874042&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874051 T1 - Determining the role of the Air Force family nurse practitioner in deployments. AU - Lavey MD Y1 - 1996/01// N1 - Accession Number: 109874051. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Military Deployment KW - United States Air Force KW - Family Nurse Practitioners KW - Professional Role KW - Military Personnel KW - Descriptive Research KW - Purposive Sample KW - Research, Military KW - Interviews KW - Constant Comparative Method KW - Human SP - 76 p EP - 76 p JO - Determining the Role of the Air Force Family Nurse Practitioner in Deployments JF - Determining the Role of the Air Force Family Nurse Practitioner in Deployments PB - Uniformed Services University of the Health Sciences (USUHS) AB - What is the role of the military nurse practitioner in deployment? Nurse practitioners are not currently deployed for their ability to fulfill the role of a primary health care provider for which they are educated, but instead are deployed as medical surgical nursing staff/administrators. The first class of military family nurse practitioners will graduate from the Uniformed Services University of the Health Sciences in May of 1996. While the role of this new group of professionals is not precisely defined, education within a Department of Defense institution, structured for the military services, requires definition in the area of the medical readiness role a unique role for the military nurse practitioner. The exploration and description of the deployment role of the nurse practitioner has been accomplished in this study through a qualitative, descriptive research methodology, to include the nature of patient care provided in the field, the actual role fulfilled by nurse practitioners that have deployed, and their perceived msnree of preparedness, performance, and role congruence as a result of medical-readiness training and role expectation. A purposeful sample of ten military nurse practitioners were interviewed, the data was analyzed using the constant comparative method and reported in an attempt to describe the most effective utilization of the military nurse practitioner during deployment and to make recommendations regarding the readiness training of the nurse practitioner. AV - Order Info: 1391257 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874051&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872314 T1 - The effect of inspired oxygen concentration and transportation time on arterial hemoglobin oxygen saturation during transport from the operating room to the postanesthesia care unit. AU - Swanagin SE Y1 - 1996/01// N1 - Accession Number: 109872314. Language: English. Entry Date: 19980601. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Oxygenation -- Evaluation KW - Transfer, Intrahospital KW - Postoperative Period KW - Adolescence KW - Adult KW - Aged KW - Middle Age KW - Pretest-Posttest Control Group Design KW - Convenience Sample KW - Post Anesthesia Care Units KW - Time Factors KW - Research, Military KW - Human SP - 39 p EP - 39 p JO - Effect of Inspired Oxygen Concentration & Transportation Time on Arterial Hemoglobin Oxygen Saturation During Transport From the Operating Room to the Postanesthesia Care Unit JF - Effect of Inspired Oxygen Concentration & Transportation Time on Arterial Hemoglobin Oxygen Saturation During Transport From the Operating Room to the Postanesthesia Care Unit PB - Uniformed Services University of the Health Sciences (USUHS) AB - Early postoperative hypoxemia as a postanesthetic complication often appears at the end of an operation and may linger through the first postoperative hours. This hypoxemia is often due to reduced functional residual capacity (FRC), hypoventilation, and ventilation perfusion mismatch. Early postoperative hypoxemia leads to cellular ischemia which may delay recovery or lead to organ dysfunction and increased morbidity and mortality. In addition, posthyperventilation hypoventilation and the persistence of ventilatory depression produced by anesthetics and neuromuscular blocking drugs may aggravate hypoxemia. The availability of pulse oximetry has made it possible to make continuous measurements of arterial oxygen saturation (AaO2) intraoperatively and postoperatively, Oxygen saturation may decrease during transport from the operating room to the postanesthesia care unit (PACU). The purpose of this study was to assess the degree of blood oxygenation during transport to the PACU with and without supplemental oxygen. This study was conducted using 40 adults, aged 16 to 79 years of age, who underwent surgical procedures under general anesthesia. The research study used a pretest posttest control group design on a convenience sample. Subjects were randomized into either the treatment group or the control group. Those in the treatment group received supplemental oxygen during transport to the PACU postoperatively, while those in the control group did not. Individuals in the control group who required supplemental oxygen therapy during postoperative transport were eliminated. SaO2 was recorded just prior to transport to the PACU, transport time was recorded for each patient, and SaO2 was recorded upon arrival in the PACU and as well as prior to the institution of supplemental oxygen, unless already being used. Results showed no difference between groups in age, body weight, smoking history, baseline hemoglobin, baseline SaO2, surgery time, and transport time. There were no statistically significant differences in pretransport and post transport SaO2's. Transport time had no significant impact on the post transport SaO2 in either group. There was no significance noted in the post transport SaO2 of those patients who had abdominal or thoracic incisions. Breathing supplemental oxygen versus room air had no significant impact on post transport SaO2's. SaO2 did not decrease significantly with an increase in transport time in the group without supplemental oxygen. Routine use of supplemental oxygen during postoperative transport to the PACU may be unwarranted where OR suite to PACU transport times are less than one minute. Similar studies should focus on transport times that exceed one minute such as PACUs and surgical intensive care units which are at great distances from the OR suite. AV - Order Info: UMI Order PUZ1385143 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872314&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872307 T1 - Incidence of visible or occult blood on laryngoscope blades and handles. AU - Phillips RA Y1 - 1996/01// N1 - Accession Number: 109872307. Language: English. Entry Date: 19980601. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Laryngoscopy -- Equipment and Supplies KW - Surgical Instruments KW - Occult Blood KW - Sterilization and Disinfection KW - Infection Control KW - Basic Research KW - Research, Military KW - Human SP - 36 p EP - 36 p JO - Incidence of Visible or Occult Blood on Laryngoscope Blades & Handles JF - Incidence of Visible or Occult Blood on Laryngoscope Blades & Handles PB - Uniformed Services University of the Health Sciences (USUHS) AB - Anesthesia providers must take appropriate precautions to reduce the potential for transmission of infectious agents to the patients under their care. The devastating spread of human immunodeficiency virus (HlV) and hepatitis B virus (HBV) over the past decade has resulted in the development of specific guidelines for the cleaning, disinfection, sterilization, and handling of medical equipment and instruments. Contamination of laryngoscope blades and handles with visible and occult blood frequently occurs during routine airway management. Several studies suggest either procedures for cleaning, disinfection, sterilization, and handling of laryngoscope blades and handles are ineffective, or there may be poor compliance with the established protocols. The purpose of this study was to determine the incidence of visible and occult blood on laryngoscope blades and handles that were identified as ready for patient use. Sixty five laryngoscope blades and handles identified as ready for patient use were observed for visible blood and tested for occult blood. A modified version of the three stage phenolphthalein blood indicator test, used in forensic medicine, was employed to determine the presence of occult blood. A preliminary study was conducted in vitro and determined the sensitivity of the phenolphthalein test kit to be 1:10,000 parts blood to normal saline at sixty seconds. Collected data were analyzed and percentages were computed based on the relative rate of occurrence. None of the blades or handles observed had visible blood. Of the 65 blades tested for occult blood, 13 (20%) tested positive. Of the 65 handles tested for occult blood, 26 (40%) tested positive. The occurrence of occult blood on laryngoscope blades and handles in the afternoon (PM) was statistically significant more than the occurrence of occult blood in the morning (AM). The degree to which contaminated anesthesia equipment plays in the overall nosocomial rate is difficult to determine. The presence of blood is an indicator of potential cross infection, since biological fluids such as blood and saliva are known to transmit infectious diseases. The collected data in this study confirm that more rigorous decontamination protocols must be instituted to ensure complete removal of blood prior to sterilization, since laryngoscope blades and handles have irregular surfaces with repositories for infectious material. In addition, anesthesia providers need continuous in service education to improve, supplement, and update knowledge of infection control procedures after initial training. AV - Order Info: UMI Order PUZ1385139 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872307&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874044 T1 - Influence of military father absence on cognitive development of children less than 2 years of age. AU - Dueck MJ Y1 - 1996/01// N1 - Accession Number: 109874044. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. Instrumentation: Cognitive Abilities Scale (CAS). KW - Cognition -- In Infancy and Childhood KW - Fathers KW - Military Personnel KW - Father-Child Relations KW - Child Development KW - Child, Preschool -- Psychosocial Factors KW - Research, Military KW - Research Instruments KW - Child, Preschool KW - Convenience Sample KW - Pilot Studies KW - Human SP - 82 p EP - 82 p JO - Influence of Military Father Absence on Cognitive Development of Children Less Than 2 Years of Age JF - Influence of Military Father Absence on Cognitive Development of Children Less Than 2 Years of Age PB - Uniformed Services University of the Health Sciences (USUHS) AB - Children raised in father absent environments are at a potential disadvantage, in terms of cognitive development. Father absence can not be avoided in some situations, such as during military service. This current study's aim is to test a particular research methodology. The goal is to examine and describe the affects of limited father absence on the cognitive performance of two year old children. A standardized cognitive screening test, the Cognitive Abilities Scale (CAS), was administered to a convenience sample of five two-year olds, whose military fathers had been absent for a minimum of three months. All were children of college educated military officers. Subjects scored above the standardized mean for the test in terms of global cognitive abilities. As a result of the pilot, several methodological problems were identified; 1) the study of father absence was found to be a sensitive issue in the military setting, 2) problems were encountered in accessing two-year olds, and 3) convenience sampling lead to a nonrepresentative sample. Alternate methodologies are suggested to address these problems in future research. Health care providers can provide early assessment and initiate interventions for children at risk for negative cognitive effects from father absence. AV - Order Info: 1391254 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874044&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872316 T1 - Interactions and inherent relationships between alternative health care providers and their patients. AU - Smith PA Y1 - 1996/01// N1 - Accession Number: 109872316. Language: English. Entry Date: 19980601. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Alternative Therapies KW - Health Personnel KW - Professional-Client Relations KW - Descriptive Research KW - Purposive Sample KW - Interviews KW - Data Analysis KW - Qualitative Studies KW - Human SP - 65 p EP - 65 p JO - Interactions & Inherent Relationships Between Alternative Health Care Providers & Their Patients JF - Interactions & Inherent Relationships Between Alternative Health Care Providers & Their Patients PB - Uniformed Services University of the Health Sciences (USUHS) AB - The interactions and inherent relationships between alternative health care providers and their patients was explored using a descriptive qualitative approach. The purpose of the study was to describe and identify both common and prominent themes in the nature of the interactions and relationships. A purposive sampling of providers resulted in 3 provider participants of differing practices: a doctor of chiropractic, a doctor of acupuncture/Traditional Chinese medicine, and a practitioner of healing touch. A convenience sampling of established patients yielded a 12 patient participants, four per provider. Data were generated from provider interviews, patient interviews, and observed patient provider sessions. Data analysis utilized the qualitative methods of theme categorizing and clustering as described by Burns and Grove. Five theme categories emerged from the data: (1) Health Promotion/Illness Prevention, (2) Relaxation/Combating Stress, (3) Provider as Mechanism of Treatment, (4) Friendship, (4A) Listening, (4B) Small Talk, (4C) Openness/Trusting/Caring, (5) Holism. Significant statements were extrapolated to illustrate the arrival of the theme categories and clusters. The findings of this study demonstrate that the themes are characteristics of theinteractions and relationships between alternative providers and their patients and are components contributing to the therapeutic process. AV - Order Info: UMI Order PUZ1385141 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872316&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874049 T1 - Military physician and nurses' knowledge and use of modern natural family planning. AU - Spencer PG Y1 - 1996/01// N1 - Accession Number: 109874049. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Family Planning, Natural KW - Health Knowledge -- Evaluation KW - Military Personnel KW - Physicians KW - Advanced Practice Nurses KW - Convenience Sample KW - Questionnaires KW - Descriptive Research KW - Research, Military KW - Human SP - 59 p EP - 59 p JO - Military Physician & Nurses' Knowledge & Use of Modern Natural Family Planning JF - Military Physician & Nurses' Knowledge & Use of Modern Natural Family Planning PB - Uniformed Services University of the Health Sciences (USUHS) AB - Modern Natural Family Planning (NFP) is safe, effective family planning. A provider's knowledge of NFP influences whether or not they recommend it to patients. The purpose of this study was to determine the knowledge level military physicians and Advanced Practice Nurses had of modern NFP. A convenience sample of physicians and APNs was selected from a military medical center. Of the 86 questionnaires distributed, 36 were returned by physicians, 5 by APNs, and one by a physician assistant. Thirty four percent of the respondents did not recommend NFP to patients when discussing contraception. If they did, most described a Calendar Rhythm approach. Thirty two percent of respondents reported they did not assess women's cultural values when prescribing family planning. Most greatly underestimated NFP's theoretical and use effectiveness. Almost 50% of the respondents did not know what NFP resources are available. Many participants were unfamiliar with modern NFP, underestimated it's efficacy, and either did not recommend NFP, or did so with reservations. AV - Order Info: 1391259 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874049&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872299 T1 - The myotoxic effect of microencapsulated naproxen after intramuscular injection in rats. AU - Bohan KJ Y1 - 1996/01// N1 - Accession Number: 109872299. Language: English. Entry Date: 19980601. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Naproxen KW - Ketorolac KW - Injections, Intramuscular KW - Comparative Studies KW - Rats KW - Animal Studies KW - Analysis of Variance KW - T-Tests SP - 50 p EP - 50 p JO - Myotoxic Effect of Microencapsulated Naproxen After Intramuscular Injection in Rats JF - Myotoxic Effect of Microencapsulated Naproxen After Intramuscular Injection in Rats PB - Uniformed Services University of the Health Sciences (USUHS) AB - At the present time ketorolac is the only NSAID approved for intravenous and intramuscular use in humans. The half life of naproxen is 12 -- 15 hours compared to 4 -- 6 hours for ketoralac, and naproxen has an antipyretic effect. A drug carrier system has been developed which allows for highly lipophilic compounds such as naproxen to be microencapsulated (MEC) for parenteral use. Intramuscular MEC naproxen could provide greater pain relief than ketoralac with a longer duration of action. MEC naproxen could also be given to reduce or replace opiod analgesics and reduce hyperthermia in patients unable to receive oral or rectal antipyretics. Since an assessment of the potential for local toxicity of a product intended for intramuscular injection is an important component of an initial drug development strategy, this research was conducted to determine the potential for myotoxicity from intramuscular MEC naproxen. Forty female Sprague Dawley rats were given intramuscular injections of 150mg/kg MEC naproxen into the right gastrocnemius muscle with an equal volume of carrier polymer alone injected into the left. Animals were placed into four groups of ten for sacrifice at 24 hours, 72 hours, one week, and one month post injection. Multiple tissue sections were cut, stained with hematoxylin and eosin, and examined under light microscopy for histopathologic changes. All samples were blinded before grading by a pathologist using the following scoring system: 0 = no damage; 1 = sparsely scattered hyalinized fibers and a localized inflammatory reaction, 2 = definite fiber destruction with the presence of macrophage digestion of muscle fibers and a mixed cellular infiltrate in some but not all sections examined; 3 = widespread muscle damage throughout the original specimen. Histopathologic scores were compared using Analysis of Variance (ANOVA) and paired t tests with p < 0.05 considered statistically significant. Pathology was evident in each of the specimens examined. There were no statistically significant differences found between MEC naproxen and carrier polymer. The histopathology induced by MEC naproxen was significantly decreased by one month compared to 24 hour MEC naproxen. The histopathology induced by the carrier polymer alone was significantly decreased by one week compared to 24 hour carrier polymer. There were no scores of zero or three for any of the specimens. A power analysis revealed a level between 90% and 95%. MEC naproxen injected intramuscularly produces the same msnree of histological damage to rat skeletal muscle as carrier polymer alone. A moderate level of histopathology occurred at 24 hours for both the MEC naproxen and carrier polymer. This was partially reversed by one month for the MEC naproxen and by one week for the carrier polymer. For further studies, a positive control using 10% formalin, negative controls of noninjected muscle, and muscle injected with .9% normal saline may be beneficial. These data do not suggest that myotoxicity from MEC Naproxen would be an obstacle to human trials. AV - Order Info: UMI Order PUZ1385126 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872299&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872311 T1 - Patient knowledge of anesthesia. AU - Moore JW Y1 - 1996/01// N1 - Accession Number: 109872311. Language: English. Entry Date: 19980601. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Postnatal Period KW - Surgical Patients KW - Health Knowledge -- Evaluation KW - Nurse Anesthetists KW - Anesthesiologists KW - Anesthesia Induction KW - Convenience Sample KW - Research, Military KW - Hospitals, Military KW - Professional-Patient Relations KW - Human SP - 35 p EP - 35 p JO - Patient Knowledge of Anesthesia JF - Patient Knowledge of Anesthesia PB - Uniformed Services University of the Health Sciences (USUHS) AB - The purpose of this study is to provide a baseline measurement of patient's knowledge of who provided their anesthesia. The general public may be unaware of the existence of nurse anesthesia as a profession. Failure of patients to identify Certified Registered Nurse Anesthetists as an option for the provision of their anesthesia has negative consequences for both the patient and anaesthetists as a profession. The patient's fundamental right to choose the type of anesthesia provider administering anesthesia care has been explored in this study. The adverse effects of patient's lack of knowledge relative to nurse anesthetists is also presented. A convenience sample of 50 post-operative and post partum patients requiring anesthesia care in a medium-sized military medical facility was surveyed to determine the extent of their knowledge about which type of anesthesia provider (Certified Registered Nurse Anesthetist or Anesthesiologist) administered their anesthesia. Four subjects received their primary anesthesia care from physician anesthesiologists and 46 from nurse anesthetists. Three of the four receiving care from an anesthesiologist accurately identified their provider. Of the 46 subjects receiving care delivered by nurse anesthetists only seven accurately identified their provider (15.3%). The results clearly indicate a lack of patient knowledge about the type of provider is administering their anesthesia. AV - Order Info: UMI Order PUZ1385134 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872311&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109871988 T1 - Perceptions of the utilization of family nurse practitioners by current outpatient Air Force physicians. AU - Bertz PE Y1 - 1996/01// N1 - Accession Number: 109871988. Language: English. Entry Date: 19980101. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Military Nursing KW - Family Nurse Practitioners -- Utilization KW - Physician Attitudes KW - Military Medicine KW - Attitude Measures KW - Pilot Studies KW - Instrument Construction KW - Primary Health Care KW - Descriptive Research KW - Questionnaires KW - Military Personnel KW - Data Analysis, Statistical KW - Outpatient Service KW - Research, Military KW - United States Air Force KW - Human SP - 83 p EP - 83 p JO - Perceptions of the Utilization of Family Nurse Practitioners by Current Outpatient Air Force Physicians JF - Perceptions of the Utilization of Family Nurse Practitioners by Current Outpatient Air Force Physicians PB - Uniformed Services University of the Health Sciences (USUHS) AB - The United States Air Force is in the process of introducing family nurse practitioners (FNP's) in their medical treatment facilities worldwide. Acceptance of the nurse practitioner by the health care team is critical to their effective utilization. Therefore it is essential to take steps to investigate the out patient health care environment within the Air Force. In this descriptive study, information was collected regarding the attitudes of current Air Force outpatient physicians (N=131) at four Air Force medical treatment facilities regarding the utilization of the FNP. This study involved tool development and a pilot study. The questionnaire used consisted of 24 questions pertaining to utilization of NPs, physician experience, comfort with NPs, and demographic data. Data analysis included descriptive and inferential statistics. Results indicate that physicians perceive the utilization of FNPs to increase the amount of education and counseling given to patients, to allow physicians to spend more time on complex cases, and to increase the number of patients seen in the clinic. Physicians surveyed believe that FNPs should be placed in the primary care or family practice clinics. The length of time since the physician graduated from medical school, and length of time a physician has worked with a NP was related to a greater level of comfort in working with NPs or under the care of an NP. AV - Order Info: UMI Order PUZ1385125 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109871988&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874050 T1 - The prevalence of eating disorders within female active duty Air Force Nurse Corps Officers. AU - Quesenberry HA Y1 - 1996/01// N1 - Accession Number: 109874050. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Anorexia Nervosa KW - Bulimia KW - Eating Disorders KW - Women KW - Active Duty Personnel KW - Female KW - Convenience Sample KW - Hospitals, Military KW - Questionnaires KW - Descriptive Research KW - Research, Military KW - United States Air Force KW - Human SP - 58 p EP - 58 p JO - Prevalence of Eating Disorders Within Female Active Duty Air Force Nurse Corps Officers JF - Prevalence of Eating Disorders Within Female Active Duty Air Force Nurse Corps Officers PB - Uniformed Services University of the Health Sciences (USUHS) AB - This research study investigated the prevalence of eating disorders with a specific population of active duty female Air Force Nurse Corps officers. The eating disorders investigated included Anorexia Nervosa, Bulimia Nervosa, Binge Eating Disorder and Eating Disorders Not Otherwise Specified. The sampling technique was a convenience sample at a large tertiary Air Force medical treatment facility. The total number of research volunteers sampled was 300 with a response rate of 175 (58%). An instrument previously used in a study of eating disorders among Navy personnel was modified to fit the Air Force culture. This questionnaire measured five components: physiological, professional, psycho social, historical and military culture. This was a descriptive study utilizing percentages, frequencies, and standard deviations. The findings, when compared to similar lay populations, were not statistically significant. Less than 1% of respondents reported behaviors consistent with Anorexia Nervosa. One percent noted bulimic or binge eating behaviors. Approximately 4 15% of the study group reported eating behavior disorders not otherwise specified. In summary, for this sample of active duty female Air Force nurses, there was no statistical difference when compared to the lay population with respect to the prevalence of eating disorders. However, within the military culture and with its emphasis upon readiness, these numbers may hold clinical significance. For example, within a small readiness team composed of multi tasked health care providers, one member who may have an eating disorder can compromise the mission effectiveness. AV - Order Info: 1391258 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874050&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109874045 T1 - Proper use of the metered-dose inhaler in children utilizing a one-on-one teaching plan. AU - Bourne JL Y1 - 1996/01// N1 - Accession Number: 109874045. Language: English. Entry Date: 20000201. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Nebulizers and Vaporizers -- Utilization KW - Asthma -- In Infancy and Childhood KW - Patient Education KW - Teaching Methods -- Evaluation KW - Bronchodilator Agents -- Administration and Dosage KW - Respiratory Function Tests KW - Pilot Studies KW - Child KW - Pretest-Posttest Design KW - Quasi-Experimental Studies KW - T-Tests KW - Research, Military KW - Human SP - 65 p EP - 65 p JO - Proper Use of the Metered-dose Inhaler in Children Utilizing a One-on-one Teaching Plan JF - Proper Use of the Metered-dose Inhaler in Children Utilizing a One-on-one Teaching Plan PB - Uniformed Services University of the Health Sciences (USUHS) AB - The regular use of inhaled anti inflammatory agents with inhaled B agonists for rescue is considered the mainstay of therapy for long term asthma. The success of metered dose-inhalers (MDIs) in treating lung disease depends chiefly on inhaler technique, patient compliance, and appropriate dosage. A pilot study to examine the effectiveness of a teaching tool for proper MDI use in a population whose age ranged from 8 to 12 years was conducted in a military pediatric asthma clinic. A pretest posttest quasi experimental design was used to determine if a one on one teaching plan with bronchodilator inhalers would improve use of MDI technique and thus improve pulmonary function in this young population. The eight question inhaler skills checklist tool developed by the American Institutes for Research was used to measure each child's proper use of the MDI. Only children presently prescribed a bronchodilator MDI were accepted into the study. Pretestposttest measures included pulmonary function tests (PFTs) and the metered dose inhaler checklist (MDIC). On the first visit the child was pretested for baseline PFT and then evaluated for proper MDI use with the usual prescribed two puffs of albuterol. A PFT was again conducted 10 minutes after the MDI use. The teaching plan was then implemented. Posttests using the two same measures (MDIC & PFT) were then completed at least 20 minutes after the child had self-administered the first dose of bronchodilator. The second visit was conducted after a one to two week lapse in time from the first visit and in the same manner as the first, but without the teaching intervention. Descriptive data on the teaching tool were obtained in order to find specific areas of technique that most hamper proper use of the MDI by this group of children. All children improved at least 25% on MDI use in this pilot study. Matched t-test were conducted on the pretest and posttest pulmonary function test results for the group. Statistical significant results were not obtained at the 0.05 level of significance. Contributing factors could be the small sample size and the lack of a compromised baseline pulmonary status (83% of the subjects had greater than 80% function). In order for there to be improvement in pulmonary function, the subject's status must warrant a need for bronchodilation MDI use. Recommendation for further study would be a larger sample size and for the subjects to have a compromised pulmonary status requiring the need for MDI use. AV - Order Info: 1391253 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109874045&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872302 T1 - The Role of the CRNA in the Indian Health Service. AU - Martineau MJ Y1 - 1996/01// N1 - Accession Number: 109872302. Language: English. Entry Date: 19980601. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Nurse Anesthetists KW - Professional Role KW - Health Services, Indigenous KW - United States KW - Native Americans KW - Self Report KW - Questionnaires KW - Mail KW - Descriptive Statistics KW - Descriptive Research KW - United States Public Health Service KW - Human SP - 77 p EP - 77 p JO - Role of the Crna in the Indian Health Service JF - Role of the Crna in the Indian Health Service PB - Uniformed Services University of the Health Sciences (USUHS) AB - The problem of how and whether to utilize Certified Registered Nurse Anesthetists (CRNAs) has been controversial both historically and today (Bankert, 1993). Concerning CRNAs in the U.S. Indian Health Service (IHS), data on utilization and service was nonexistent. This study describes the roles and capabilities of IHS CRNAs. A self administered questionnaire was mailed to the target population. Descriptive statistics were used to present demographic data and CRNA involvement in key areas. It was found that 76 percent of the sample were commissioned corps officers of the U.S. Public Health Service. Only 47 percent of the sample population claimed an anesthesiologist had been at their clinical site during the entire year. All CRNAs in the sample practiced regional anesthesia. Subjects also participated in diverse professional activities beyond clinical anesthesia. It was concluded that IHS CRNAs provide a broad range of services and may practice without the collaboration of an anesthesiologist. AV - Order Info: UMI Order PUZ1385133 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872302&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - CHAP ID - 1996-98575-002 AN - 1996-98575-002 AU - Millis, Barbara J. ED - Bianco-Mathis, Virginia ED - Chalofsky, Neal ED - Bianco-Mathis, Virginia, (Ed) ED - Chalofsky, Neal, (Ed) T1 - Connecting with cooperative learning. T2 - The adjunct faculty handbook. Y1 - 1996/// SP - 115 EP - 131 CY - Thousand Oaks, CA, US PB - Sage Publications, Inc SN - 0-7619-0277-5 SN - 0-7619-0278-3 N1 - Accession Number: 1996-98575-002. Partial author list: First Author & Affiliation: Millis, Barbara J.; US Air Force Academy, Colorado Springs, CO, US. Release Date: 19970301. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. Book Type: Handbook/Manual. ISBN: 0-7619-0277-5, Hardcover; 0-7619-0278-3, Paperback. Language: English. Major Descriptor: Cooperative Learning; Higher Education; Teaching Methods. Minor Descriptor: College Students; Educational Objectives; Learning Theory. Classification: Curriculum & Programs & Teaching Methods (3530). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Intended Audience: Psychology: Professional & Research (PS). Page Count: 17. AB - describes the theory, methods, and objectives of cooperative learning [in college courses] / this technique is predicated on active learning, cooperation, and respect for individual learning styles / it provides a unique classroom structure that can be used to balance more typical methods of learning, such as listening to lectures, reading predigested texts, memorizing, and taking multiple-choice tests / outlines a definitive approach that requires detailed lesson plans with carefully positioned transitions, checkpoints, and outcomes / [throughout] this chapter, adjuncts will discover the behind-the-scenes work, creativity, and preparation that are required to produce successful group assignments describes a series of disciplined methods that ensures commitment, group monitoring, individual accountability, equal contribution, and mutual coaching / [suggest that] the beauty of cooperative learning is that it goes beyond teaching 'just content' / an additional benefit is skill development in group process, social interaction, problem solving, critical thinking, and writing and presentation techniques (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - theories & methods & objectives of cooperative learning in teaching KW - college students KW - guide for adjunct faculty KW - 1996 KW - Cooperative Learning KW - Higher Education KW - Teaching Methods KW - College Students KW - Educational Objectives KW - Learning Theory KW - 1996 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1996-98575-002&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - THES ID - 109872298 T1 - Usage frequency of precordial/esophageal stethoscopes during anesthetic cases. AU - Bruening WD Y1 - 1996/01// N1 - Accession Number: 109872298. Language: English. Entry Date: 19980601. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Stethoscopes -- Utilization KW - Anesthesiologists KW - Nurse Anesthetists KW - Monitoring, Physiologic KW - Respiratory Circulation -- Evaluation KW - Observational Methods KW - Interviews KW - Qualitative Studies KW - Human SP - 75 p EP - 75 p JO - Usage Frequency of Precordial/esophageal Stethoscopes During Anesthetic Cases JF - Usage Frequency of Precordial/esophageal Stethoscopes During Anesthetic Cases PB - Uniformed Services University of the Health Sciences (USUHS) AB - The purpose of this study was to ascertain the utilization rate of the precordial or esophageal stethoscope among anesthesia providers. Stethoscope utilization rates were determined through the collection and analysis of both quantitative and qualitative data. Quantitative data were collected through random observations of anesthesia providers while they provided uninterrupted anesthesia care. Anesthesiologists, Certified Registered Nurse Anesthetists (CRNA), and Student Registered Nurse Anesthetists (SRNA) comprised the group of anesthesia providers observed. Fifty observations (N=50) were conducted that not only focused on the use of a precordial or esophageal stethoscope, but also on the use of electronic monitoring equipment. Of these 50 observations an average overall stethoscope utilization rate of 68% was observed. Specifically, 0% of the anesthesiologists (n=4), 9.1% ofthe CRNAs (n=ll), and 94.3% of the SRNAs (n=35) who were observed used a precordial or esophageal stethoscope. Qualitative data were analyzed from five interviews conducted with randomly selected anesthesia providers. Two anesthesiologists and three CRNAs were permitted to participate in these interviews. The interview questions were designed to elicit the anesthesia provider's thoughts and feelings as they pertained to the precordial or esophageal stethoscope and to elicit responses that could be related to clinical practice. From those anesthesia providers interviewed, 40% stated they utilized one of these specialized stethoscopes to assess a patient's respiratory and circulatory status during the administration of an anesthetic. Eighty percent of those interviewed felt it was unacceptable to discontinue the routine use of these specialized stethoscopes and 40% of those interviewed stated that they would rely on one of these stethoscopes to monitor a patient's status in the absence of electronic monitoring equipment. In actual practice, a 6.7% utilization rate of the precordial and esophageal stethoscopes was measured when 15 observations of anesthesiologists and Certified Registered Nurse Anesthetists (CRNA) were conducted. These findings imply use of the precordial and esophageal stethoscopes by experienced anesthesia providers occurs with less frequency than does the use of electronic monitors such as the pulse oximeter or capnograph. It appears that the use of these two stethoscopes has been substituted by, rather than supplemented with, electronic monitoring equipment. AV - Order Info: UMI Order PUZ1385127 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872298&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - THES ID - 109872305 T1 - Use of alternate medicine treatments by active duty Air Force personnel. AU - Harris BS Y1 - 1996/01// N1 - Accession Number: 109872305. Language: English. Entry Date: 19980601. Revision Date: 20150923. Publication Type: Masters Thesis; research. KW - Active Duty Personnel KW - Relaxation Techniques -- Utilization KW - Massage -- Utilization KW - Chiropractic -- Utilization KW - Vitamins -- Administration and Dosage KW - United States Air Force KW - Alternative Therapies -- Utilization KW - Descriptive Research KW - Surveys KW - Mail KW - Plants, Medicinal KW - District of Columbia KW - Research, Military KW - Human SP - 59 p EP - 59 p JO - Use of Alternate Medicine Treatments by Active Duty Air Force Personnel JF - Use of Alternate Medicine Treatments by Active Duty Air Force Personnel PB - Uniformed Services University of the Health Sciences (USUHS) AB - Use of alternative therapies by Americans is being documented and found quite common. Personnel serving in the military have access to a unique health care system and may also have different cultural values than the general public. According to Kleinman's concept of a health care system as a social reality, three aspects of any health care system are the popular lay sector, or self treatment, the traditional sector, and the folk sector, where alternative therapy falls. As the military looks at Building Healthy Communities, with emphasis on self care and healthy lifestyles, alternative therapies may play a key role as an intermediary between self care and tertiary care in the traditional, costly health care system. The purpose of this study was to determine extent of use of alternative health care by active duty Air Force personnel. Survey forms were mailed to 205 active duty officers in the Washington, D.C. area. Response rate was 58%. Thirty four percent of respondents had used at least one form of alternative therapy. Massage therapy was most commonly used (15 responders), followed by herbs (11), relaxation techniques (10), megavitamin therapy (10), and, finally chiropractic therapy (9). Commercial weight loss programs and self help groups were also used by the respondents. Symptoms for which alternative therapies were used included back problems (16), allergies (9), sprains/strains (9), headaches (9), and weight problems (8). Some personnel indicated they used alternative therapies as prevention, not for disorders. Fifty eight percent of respondents, whether they had previously used these therapies or not, indicated they would use alternative therapies if indicated. The top therapies officers would use were chiropractors, relaxation techniques, massage therapy, and megavitamin. The study concludes use of alternative therapies in the sample of the military population is similar to the general public. AV - Order Info: UMI Order PUZ1385130 M1 - MSN AD - United States Air Force Nurse Corps UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=109872305&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 1996-00207-001 AN - 1996-00207-001 AU - Barker, John M. Jr. AU - Clothier, Cathy C. AU - Woody, James R. AU - McKinney, Earl H. Jr. AU - Brown, Jennifer L. T1 - Crew resource management: A simulator study comparing fixed versus formed aircrew. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 1996/01// VL - 67 IS - 1 SP - 3 EP - 7 CY - US PB - Aerospace Medical Assn SN - 0095-6562 N1 - Accession Number: 1996-00207-001. PMID: 8929198 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Barker, John M. Jr.; US Air Force Academy, Dept of Behavioral Sciences, CO, US. Release Date: 19960101. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Aircraft Pilots; Errors; Job Performance. Minor Descriptor: Flight Simulation. Classification: Military Psychology (3800). Population: Human (10). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Scientific Simulation. Page Count: 5. Issue Publication Date: Jan, 1996. AB - Investigated the effect of crew formation policy on aircrew performance and cockpit resource management (CRM) behavior during missions in US Air Force KC-135 tanker simulators that included an in-flight emergency. CRM behavioral data and error data were collected by trained observers for 9 fixed (together indefinitely) and 8 formed (together temporarily) crews. Error data were classified as either major (directly affecting flight safety) or minor errors. All Ss were active duty US Air Force pilots currently working in the KC-135 tanker aircraft; crews consisted of a pilot and copilot. Fixed crews committed more minor errors (4.4 per mission) than formed crews (2.6 per mission). No differences were found concerning major errors or CRM behavioral indicators. Results suggest the possibility of a 'familiarity decline,' where aircrew performance declines when crew members become too familiar with each other and may affect flight safety. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cockpit resource management & major & minor errors during flight simulation KW - formed vs fixed crews of Air Force pilots KW - 1996 KW - Air Force Personnel KW - Aircraft Pilots KW - Errors KW - Job Performance KW - Flight Simulation KW - 1996 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1996-00207-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 1996-03553-004 AN - 1996-03553-004 AU - Brisbois, Judith E. T1 - Connections between first- and second-language reading. JF - Journal of Reading Behavior JO - Journal of Reading Behavior Y1 - 1995/12// VL - 27 IS - 4 SP - 565 EP - 584 CY - US PB - Lawrence Erlbaum SN - 0022-4111 N1 - Accession Number: 1996-03553-004. Other Journal Title: Journal of Literacy Research. Partial author list: First Author & Affiliation: Brisbois, Judith E.; US Air Force Academy, Dept of Foreign Languages, Colorado Springs, CO, US. Other Publishers: Sage Publications; Taylor & Francis. Release Date: 19960101. Correction Date: 20111121. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Foreign Language Learning; Reading Skills. Classification: Linguistics & Language & Speech (2720). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. Page Count: 20. Issue Publication Date: Dec, 1995. AB - Studied the contributions of 1st language reading (L1), 2nd language (L2) vocabulary, and L2 grammatical skills to L2 reading scores; and the differences in these contributions by course level. 131 English speaking students (88 beginners and 43 upper level Ss), enrolled in French courses, were tested on the Nelson-Denny Reading Test (J. Brown et al, 1981), French grammar, vocabulary, and reading comprehension, and English reading comprehension as measured by a recall protocol procedure. Results show that all the independent variables contributed significantly to reading comprehension for beginners, but did so for the upper level Ss only when L1 reading protocols were used as the reading measure. L1 reading contributed substantially for the upper level Ss, thereby supporting J. Cummin's Interdependence Hypothesis (1981). Findings reveal the importance of L1 reading and L2 knowledge for L2 reading comprehension. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - 1st & 2nd language reading & 2nd language knowledge KW - 2nd language learning KW - beginner vs upper level English speaking students enrolled in French courses KW - 1995 KW - Foreign Language Learning KW - Reading Skills KW - 1995 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1996-03553-004&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Slate, Stephen AD - US Air Force Academy T1 - Testing Ricardian Equivalence under Uncertainty JO - Public Choice JF - Public Choice Y1 - 1995/10// VL - 85 IS - 1-2 SP - 11 EP - 29 SN - 00485829 N1 - Accession Number: 0374364 Partial authors List; ; Keywords: Consumption; Debt; Ricardian Equivalence; Saving; Publication Type: Journal Article; Update Code: 199603 N2 - This paper uses experimental methods to analyze Ricardian equivalence when the probability of debt retirement is less than one. The results suggest that the presence of outstanding debt and the probability of debt retirement have a strong influence on savings behavior. When the probability of debt retirement is low, consumption by the current generation increases, as predicted by Keynesian theory. However, as the probability of debt retirement increases, bequests rise to offset the future generation's expected repayment liability, and deficit spending becomes much less expansionary, as predicted by Ricardian theory. In general, the average bequest is significantly larger when an outstanding debt is passed on to the next generation than when no debt exists, regardless of the probability of debt retirement. However, as long as there is some uncertainty about debt repayment, the presence of debt always stimulates some additional consumption, so that strong variants of Ricardian equivalence are not found. Coauthors are Michael McKee, William Beck, and James Alm. KW - Fiscal Policy E62 KW - Macroeconomics: Consumption; Saving; Wealth E21 L3 - http://link.springer.com/journal/volumesAndIssues/11127 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0374364&site=ehost-live&scope=site UR - http://link.springer.com/journal/volumesAndIssues/11127 DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 1996-93163-001 AN - 1996-93163-001 AU - Mabry, Thomas R. AU - Gold, Paul E. AU - McCarty, Richard T1 - Age-related changes in plasma catecholamine and glucose responses of F-344 rats to a single footshock as used in inhibitory avoidance training. JF - Neurobiology of Learning and Memory JO - Neurobiology of Learning and Memory JA - Neurobiol Learn Mem Y1 - 1995/09// VL - 64 IS - 2 SP - 146 EP - 155 CY - US PB - Academic Press SN - 1074-7427 SN - 1095-9564 N1 - Accession Number: 1996-93163-001. PMID: 7582823 Other Journal Title: Behavioral & Neural Biology; Behavioral Biology; Communications in Behavioral Biology. Part A. Original Articles. Partial author list: First Author & Affiliation: Mabry, Thomas R.; US Air Force Academy, CO, US. Other Publishers: Elsevier Science. Release Date: 19960201. Correction Date: 20130506. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Age Differences; Avoidance Conditioning; Catecholamines; Glucose; Physiological Stress. Minor Descriptor: Blood Plasma; Neurochemistry; Rats. Classification: Psychophysiology (2560). Population: Animal (20). Page Count: 10. Issue Publication Date: Sep, 1995. AB - Investigated the ability of young adult and aged male rats to respond to and to recover from acutely stressful stimulation associated with typical inhibitory avoidance training and compared their age-related changes in plasma catecholamine and glucose in response to the training. Ss were exposed to a single foot shock (0, 0.25, 0.50, or 1.0 mA) and blood samples were then obtained from each rat under basal conditions at timed intervals. The blood samples were assayed for content of epinephrine (EPI), norepinephrine, and glucose. Basal plasma levels of norepinephrine and EPI were similar for 3- and 22-mo-old rats. In contrast, plasma glucose levels were significantly lower in aged rats compared to young adults. Increments in plasma levels of EPI were greater in aged rats compared to young adult controls following transfer of rats to the test chamber. In addition, aged rats had potentiated plasma EPI responses to foot shock. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - inhibitory avoidance training KW - plasma catecholamine & glucose responses KW - young adult & aged male rats KW - 1995 KW - Age Differences KW - Avoidance Conditioning KW - Catecholamines KW - Glucose KW - Physiological Stress KW - Blood Plasma KW - Neurochemistry KW - Rats KW - 1995 DO - 10.1006/nlme.1995.1054 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1996-93163-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 1995-45541-001 AN - 1995-45541-001 AU - Mero, Neal P. AU - Motowidlo, Stephan J. T1 - Effects of rater accountability on the accuracy and the favorability of performance ratings. JF - Journal of Applied Psychology JO - Journal of Applied Psychology JA - J Appl Psychol Y1 - 1995/08// VL - 80 IS - 4 SP - 517 EP - 524 CY - US PB - American Psychological Association SN - 0021-9010 SN - 1939-1854 N1 - Accession Number: 1995-45541-001. Partial author list: First Author & Affiliation: Mero, Neal P.; US Air Force Academy, Dept of Management, Colorado Springs, CO, US. Release Date: 19951201. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Accountability; Personnel Evaluation. Minor Descriptor: Job Performance. Classification: Personnel Evaluation & Job Performance (3630). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. References Available: Y. Page Count: 8. Issue Publication Date: Aug, 1995. Publication History: Accepted Date: Feb 9, 1995; Revised Date: Feb 8, 1995; First Submitted Date: May 12, 1994. Copyright Statement: Public Domain AB - The authors tested the effects of holding raters accountable for their performance ratings on the accuracy and the favorability of those ratings. Undergraduate research participants (N = 247) completed an inbasket exercise and observed a videotaped simulation during 2 sessions over a 2-wk period. The simulation presented performance information on 4 simulated subordinates portrayed through videotaped vignettes. True performance scores were manipulated by varying the proportion of positive and negative performance vignettes presented for each subordinate. Participants who were made to feel accountable by having to justify their ratings to the experimenter in writing rated their simulated subordinates more accurately. In another experimental condition, accountable raters who were told their subordinates' previous performance ratings were too low rated their subordinates more favorably than did raters in the same experimental condition who were not accountable. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - accountability & motivational context KW - accuracy & favorability of performance ratings of simulated subordinates KW - college students KW - 1995 KW - Accountability KW - Personnel Evaluation KW - Job Performance KW - 1995 DO - 10.1037/0021-9010.80.4.517 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1995-45541-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Simpson, James R. AU - Keats, J. Bert AD - US Air Force Academy AD - College of Engineering & Applied Sciences, AZ State U T1 - Sensitivity Study of the CUSUM Control Chart with an Economic Model JO - International Journal of Production Economics JF - International Journal of Production Economics Y1 - 1995/06// VL - 40 IS - 1 SP - 1 EP - 19 SN - 09255273 N1 - Accession Number: 0374643; Keywords: Misspecification; Publication Type: Journal Article; Update Code: 199603 N2 - Economic control chart designs have not been universally implemented in industry for several reasons. For example, the parameters are too numerous and are often difficult to estimate accurately. A possible solution to these problems involves performing a sensitivity analysis of the inputs to determine which parameters are significant and how parameter misspecification impacts the results. Using two-level fractional factorial designs, we identify highly significant parameters in the Lorenzen and Vance economic control chart model under a Cumulative Sum (CUSUM) condition. The response variables examined include the expected cost per time unit and the decision variables sample size, sampling interval, control chart decision interval and reference value. Verification and misspecification analysis support our conclusions with respect to the expected cost per time unit response variable. The sensitivity study highlights the importance of experiment design in understanding the underlying behavior of the model inputs. Results of testing several scenarios indicate that a small subset of model inputs actually drive the cost response, which should make industrial implementation an easier task. The search for significant inputs can be aided by a study of the relative magnitudes of some factors such as the assignable cause rate and the ratio of out-of-control to in-control quality costs. KW - Single Equation Models; Single Variables: General C20 KW - Production; Cost; Capital; Capital, Total Factor, and Multifactor Productivity; Capacity D24 KW - Production Management M11 L3 - http://www.sciencedirect.com/science/journal/09255273 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0374643&site=ehost-live&scope=site UR - http://www.sciencedirect.com/science/journal/09255273 DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Nugent, William R. AU - Paddock, Jeffrey B. T1 - The Effect of Victim-Offender Mediation on Severity of Reoffense. JO - Mediation Quarterly JF - Mediation Quarterly Y1 - 1995///Summer1995 VL - 12 IS - 4 M3 - Article SP - 353 EP - 367 SN - 07394098 AB - This article describes an investigation of the relationship between participation in a victim-offender reconciliation program (VORP) and subsequent reoffense by children and adolescents. Two random samples of children and adolescents were drawn: one from participants in a VORP and a second from a population who went through a more traditional juvenile justice approach. An ordinal ranking of subsequent reoffenses by these children and adolescents was constructed, and ordinal logistic regression procedures were used to test the relationship between program participation and severity of subsequent reoffense. The results suggest that, after controlling for a number of potentially confounding variables, VORP participants are less likely to reoffend within a year of their VORP meeting, and if they do reoffend. will commit less serious offenses than children and adolescents who go through a more traditional juvenile justice approach. [ABSTRACT FROM AUTHOR] AB - Copyright of Mediation Quarterly is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONFLICT management KW - MEDIATION KW - RECONCILIATION KW - CHILDREN KW - TEENAGERS N1 - Accession Number: 17320736; Nugent, William R. 1; Paddock, Jeffrey B. 2,3; Affiliations: 1: Associate professor, College of Social Work, University of Tennessee, Knoxville; 2: Lieutenant colonel, United States Air Force; 3: College of Social Work, University of Tennessee, Knoxville; Issue Info: Summer1995, Vol. 12 Issue 4, p353; Thesaurus Term: CONFLICT management; Thesaurus Term: MEDIATION; Thesaurus Term: RECONCILIATION; Subject Term: CHILDREN; Subject Term: TEENAGERS; Number of Pages: 15p; Illustrations: 1 Chart, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=17320736&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 1996-91279-001 AN - 1996-91279-001 AU - Porter, David B. T1 - Computer games: Paradigms of opportunity. JF - Behavior Research Methods, Instruments & Computers JO - Behavior Research Methods, Instruments & Computers JA - Behav Res Methods Instrum Comput Y1 - 1995/05// VL - 27 IS - 2 SP - 229 EP - 234 CY - US PB - Psychonomic Society SN - 0743-3808 N1 - Accession Number: 1996-91279-001. Other Journal Title: Behavior Research Methods; Behavior Research Methods & Instrumentation. Partial author list: First Author & Affiliation: Porter, David B.; US Air Force Academy, Dept of Behavioral Sciences, CO, US. Other Publishers: Springer. Release Date: 19960201. Correction Date: 20110314. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Conference Note: 24th Annual Meeting of the Society for Computers in Psychology Symposium: Psychological research using computer game technology (1994, St Louis, Missouri). Major Descriptor: Cognitive Processes; Computer Games. Classification: Cognitive Processes (2340). Population: Human (10). Page Count: 6. Issue Publication Date: May, 1995. AB - Developed an arcade-type video game specifically designed to examine intermediate cognitive processes (D. B. Porter, 1986; unpublished manuscript). The problem of meaningful measurement and appropriate analysis of data followed a general strategy of 'surround and conquer.' By assuming 3 distinctively different perspectives (objective, subjective, and empirical), convergent support for several somewhat counterintuitive hypotheses was developed. Several analyses from each perspective are described. The strongest support was found in the comparison of analyses from different perspectives. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - development of arcade style video game KW - assessment of intermediate cognitive processes KW - conference presentation KW - 1995 KW - Cognitive Processes KW - Computer Games KW - 1995 DO - 10.3758/BF03204737 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1996-91279-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 1995-24435-001 AN - 1995-24435-001 AU - Emonson, David L. AU - Vanderbeek, Rodger D. T1 - The use of amphetamines in U.S. Air Force tactical operations during Desert Shield and Storm. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 1995/03// VL - 66 IS - 3 SP - 260 EP - 263 CY - US PB - Aerospace Medical Assn SN - 0095-6562 N1 - Accession Number: 1995-24435-001. PMID: 7661838 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Emonson, David L.; US Air Force, Headquarters Air Combat Command, Office of the Command Surgeon, Langley Air Force Base, VA, US. Release Date: 19950701. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Aviation Safety; Dextroamphetamine; Fatigue; Military Deployment. Minor Descriptor: Air Force Personnel. Classification: Psychopharmacology (2580); Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. Page Count: 4. Issue Publication Date: Mar, 1995. AB - Retrospectively surveyed US Air Force Tactical Air Command aircrew who deployed to the Southwest Asia Area of Responsibility (SAAR) for Operation Desert Shield/Desert Storm to determine the extent and effectiveness of dextroamphetamine (D-AMP) use in support of sustained flying operations (FOs). Surveys were sent to each tactical squadron that participated in Desert Storm. 65% of pilots who were surveyed used amphetamines (AMPs) during deployment to the SAAR and/or during Desert Storm. Pilots who used AMPs in FOs described it as 'occasional.' The most frequent indications for AMP use were 'aircrew fatigue' and 'mission type.' Of pilots who used AMPs, 58–61% considered their use beneficial or essential to operations. D-AMP was used effectively and without major side effects in tactical FOs. AMP use enhanced cockpit performance and flight safety by reducing the effect of fatigue during critical stages of flight. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - dextroamphetamine KW - fatigue reduction & cockpit safety & flight performance during tactical deployment in Operations Desert Shield & Desert Storm KW - male Air Force pilots KW - 1995 KW - Aircraft Pilots KW - Aviation Safety KW - Dextroamphetamine KW - Fatigue KW - Military Deployment KW - Air Force Personnel KW - 1995 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1995-24435-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 107331154 T1 - Magnetic resonance imaging of knee menisci: diagnostic interpretation and pitfalls. AU - Osborne JR AU - Abraham WP AU - Forte MD Y1 - 1995/01//1995 Jan N1 - Accession Number: 107331154. Language: English. Entry Date: 19970801. Revision Date: 20150711. Publication Type: Journal Article; diagnostic images. Journal Subset: Biomedical; Peer Reviewed; USA. NLM UID: 9112393. KW - Menisci, Tibial -- Radiography KW - Magnetic Resonance Imaging KW - Menisci, Tibial -- Pathology SP - 10 EP - 19 JO - Operative Techniques in Orthopaedics JF - Operative Techniques in Orthopaedics JA - OPER TECHNIQ ORTHOP VL - 5 IS - 1 CY - Philadelphia, Pennsylvania PB - W B Saunders SN - 1048-6666 AD - USAFA/SGOSR, 4102 Pinion Dr, Suite 100, United States Air Force Academy, CO 80840 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107331154&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - CHAP AU - Linster, Bruce G. AD - US Air Force Academy A2 - Tollison, Robert D. A2 - Congleton, Roger D. T1 - Stackelberg Rent-Seeking T2 - The economic analysis of rent seeking PB - Elgar Reference Collection. International Library of Critical Writings in Economics, vol. 49. PB - Aldershot, U.K.: PB - Elgar; distributed in the U.S. by Ashgate, Brookfield, Vt. Y1 - 1995/// SP - 170 EP - 184 RP - [1993] N1 - Accession Number: 0451212; Reviewed Book ISBN: 1-85898-005-4; Keywords: Rent Seeking; Publication Type: Collective Volume Article; Update Code: 199805 KW - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior D72 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0451212&site=ehost-live&scope=site DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 1996-90851-001 AN - 1996-90851-001 AU - Whyte, Michael M. AU - Karolick, Dolores M. AU - Nielsen, Milton C. AU - Elder, Gregory D. AU - Hawley, W. Thomas T1 - Cognitive styles and feedback in computer-assisted instruction. JF - Journal of Educational Computing Research JO - Journal of Educational Computing Research Y1 - 1995/// VL - 12 IS - 2 SP - 195 EP - 203 CY - US PB - Baywood Publishing SN - 0735-6331 SN - 1541-4140 N1 - Accession Number: 1996-90851-001. Partial author list: First Author & Affiliation: Whyte, Michael M.; United States Air Force Academy, CO, US. Other Publishers: Sage Publications. Release Date: 19960201. Correction Date: 20150126. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Style; Computer Assisted Instruction; Concept Formation; Feedback. Minor Descriptor: Air Force Personnel; College Students. Classification: Curriculum & Programs & Teaching Methods (3530); Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. Page Count: 9. Issue Publication Date: 1995. AB - Feedback during student practice is considered a fundamental component of well-designed computer-assisted instruction (CAI). The focus is on the appropriate applications of feedback in a CAI lesson that teaches knowledge bases and concepts. The student's learning style/characteristics is a factor in the process. A pretest, intervention, posttest, and delayed posttest model was followed. The factors of the design are feedback and learner characteristics (field dependent, field independent). The learners, freshmen cadets at the US Air Force Academy, were assigned to treatment groups via stratified random sampling based on pretest scores of prior knowledge and learner characteristics. The more information given, the better Ss scored on the concept acquisition test. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - cognitive style & feedback KW - concept acquisition in computer assisted instruction KW - Air Force Academy students KW - 1995 KW - Cognitive Style KW - Computer Assisted Instruction KW - Concept Formation KW - Feedback KW - Air Force Personnel KW - College Students KW - 1995 DO - 10.2190/M2AV-GEHE-CM9G-J9P7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1996-90851-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 107401885 T1 - Irritable bowel syndrome: pathophysiology, diagnosis, and management... recertification series. AU - Griffith CJ Y1 - 1994/11//1994 Nov N1 - Accession Number: 107401885. Language: English. Entry Date: 19950301. Revision Date: 20150818. Publication Type: Journal Article; CEU; exam questions; tables/charts. Journal Subset: Allied Health; Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 8403486. KW - Irritable Bowel Syndrome KW - Education, Continuing (Credit) KW - Irritable Bowel Syndrome -- Psychosocial Factors KW - Irritable Bowel Syndrome -- Diagnosis KW - Irritable Bowel Syndrome -- Physiopathology KW - Irritable Bowel Syndrome -- Therapy KW - Adult KW - Male KW - Female SP - 25 EP - 37 JO - Physician Assistant JF - Physician Assistant JA - PHYSICIAN ASSIST VL - 18 IS - 11 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - Irritable bowel syndrome (IBS) is a functional gastrointestinal (GI) disorder that affects 20% to 30% of the general population, with women seeking care more often than men by a ratio of 3:1. IBS is characterized by abnormal GI motility, abnormal visceral perception, psychologic factors, and intraluminal factors that irritate the gut. The diagnostic work-up of the IBS patient should be guided by the history and physical findings, lest the clinician unwittingly order expensive and unnecessary tests. The symptoms of IBS can, indeed, be attenuated if the clinician carefully cultivates a trusting patient-practitioner relationship and declares a therapeutic goal of optimal management rather than cure. Patient education, dietary modification, and dietary bulk are the cornerstones of management, but drug therapy and behavioral therapy may be beneficial in certain cases. SN - 8750-7544 AD - United States Air Force Clinic, 18th Medical Group, Okinawa, Japan UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107401885&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Linster, Bruce G. AD - US Air Force Academy T1 - Cooperative Rent-Seeking JO - Public Choice JF - Public Choice Y1 - 1994/10// VL - 81 IS - 1-2 SP - 23 EP - 34 SN - 00485829 N1 - Accession Number: 0346141; Keywords: Cooperation; Lobbying; Political; Rent Seeking; Publication Type: Journal Article; Update Code: 199503 N2 - This paper presents an analysis of cooperation in the context of a repeated rent-seeking game that can be thought of as modeling bilateral situations such as military/political conflict, labor/business lobbying, gang/illegal activities, or criminal/civil law suits. The potential for mutually advantageous agreements is explored using the repeated nature of the game as the mechanism that sustains the cooperation. The Nash bargaining solution is applied to symmetric as well as asymmetric rent-seeking situations. The asymmetries can derive from the players valuing the rent differently or choosing sequentially. KW - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior D72 L3 - http://link.springer.com/journal/volumesAndIssues/11127 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0346141&site=ehost-live&scope=site UR - http://link.springer.com/journal/volumesAndIssues/11127 DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Wakin, Malham M. T1 - The New Conscientious Objection: From Sacred to Secular Resistance. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) J1 - Armed Forces & Society (0095327X) PY - 1994///Fall94 Y1 - 1994///Fall94 VL - 21 IS - 1 M3 - Book Review SP - 153 EP - 155 PB - Sage Publications Inc. SN - 0095327X AB - The article reviews the book "The New Conscientious Objection: From Sacred to Secular Resistance," edited by Charles C. Moskos and John W. Chambers II. KW - NEW Conscientious Objection: From Sacred to Secular Resistance, The (Book) KW - CHAMBERS, John W. KW - MOSKOS, Charles C. KW - MILITARY ethics KW - NONFICTION N1 - Accession Number: 9412070025; Source Information: Fall94, Vol. 21 Issue 1, p153; Subject Term: NEW Conscientious Objection: From Sacred to Secular Resistance, The (Book); Subject Term: CHAMBERS, John W.; Subject Term: MOSKOS, Charles C.; Subject Term: MILITARY ethics; Subject Term: NONFICTION; Subject Term: ; Number of Pages: 3p; ; Document Type: Book Review; ; Full Text Word Count: 655; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=9412070025&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - GEN AU - Meredith, James H. T1 - The Rapido River and Hürtgen Forest in "Across the River and into the Trees." JO - Hemingway Review JF - Hemingway Review Y1 - 1994///Fall94 VL - 14 IS - 1 M3 - Literary Criticism SP - 60 EP - 66 SN - 02763362 AB - Criticism of Ernest Hemingway's "Across the River and into the Trees" (1950) has failed to explore references to the U.S. Army's 36th Division at the Rapido River in Italy and its 22d Regiment in Germany's Hürtgen Forest, which would result in a more complex understanding of the character of Colonel Cantwell and the World War II novel's philosophical message. KW - CRITICISM KW - BOOKS KW - WORLD War, 1939-1945 KW - FICTION KW - ARMIES KW - 36th Infantry Division, US KW - Hürtgen Forest (battle) KW - Hemingway, Ernest '(Across the River & into the Trees).' KW - Italy (Rapido River) KW - HEMINGWAY, Ernest, 1899-1961 KW - ACROSS the River & Into the Trees (Book) N1 - Accession Number: 9502034369; Meredith, James H. 1; Affiliations: 1 : United States Air Force Academy; Source Info: Fall94, Vol. 14 Issue 1, p60; Historical Period: 1950; 1944; Subject Term: CRITICISM; Subject Term: BOOKS; Subject Term: WORLD War, 1939-1945; Subject Term: FICTION; Subject Term: ARMIES; Number of Pages: 7p; Document Type: Literary Criticism; Full Text Word Count: 2719 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ahl&AN=9502034369&site=ehost-live&scope=site DP - EBSCOhost DB - ahl ER - TY - JOUR ID - 107395207 T1 - Nonsteroidal anti-inflammatory drugs: a pharmacologic update. AU - Griffith CJ Y1 - 1994/09//1994 Sep N1 - Accession Number: 107395207. Language: English. Entry Date: 19950101. Revision Date: 20150818. Publication Type: Journal Article; CEU; exam questions; tables/charts. Journal Subset: Allied Health; Blind Peer Reviewed; Editorial Board Reviewed; Expert Peer Reviewed; Peer Reviewed; USA. NLM UID: 8403486. KW - Antiinflammatory Agents, Non-Steroidal -- Administration and Dosage KW - Antiinflammatory Agents, Non-Steroidal -- Therapeutic Use KW - Antiinflammatory Agents, Non-Steroidal -- Adverse Effects KW - Pharmacokinetics KW - Education, Continuing (Credit) KW - Drug Interactions KW - Antiinflammatory Agents, Non-Steroidal -- Pharmacodynamics KW - Antiinflammatory Agents, Non-Steroidal -- Contraindications KW - Central Nervous System -- Drug Effects KW - Respiratory System -- Drug Effects KW - Cardiovascular System -- Drug Effects KW - Gastrointestinal System -- Drug Effects KW - Portal System -- Drug Effects KW - Urogenital System -- Drug Effects KW - Endocrine System -- Drug Effects SP - 31 EP - 50 JO - Physician Assistant JF - Physician Assistant JA - PHYSICIAN ASSIST VL - 18 IS - 9 CY - Baltimore, Maryland PB - Lippincott Williams & Wilkins AB - Nonsteroidal anti-inflammatory drugs (NSAIDs) are a heterogenous group of compounds with proven efficacy in a wide array of conditions including rheumatoid arthritis, osteoarthritis, ankylosing spondylitis, dysmenorrhea, and dental-related pain. Most of these agents are weak acids that share similar therapeutic actions, drug interactions, and side-effect profiles. Risk for adverse effects may be increased in patients with certain preexisting diseases; thus prudent pairing of patient and NSAID is imperative. SN - 8750-7544 AD - United States Air Force Clinic, 18th Med Group, Okinawa, Japan UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107395207&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Linster, Bruce G. AD - US Air Force Academy T1 - Stochastic Evolutionary Dynamics in the Repeated Prisoners' Dilemma JO - Economic Inquiry JF - Economic Inquiry Y1 - 1994/04// VL - 32 IS - 2 SP - 342 EP - 357 SN - 00952583 N1 - Accession Number: 0329957; Keywords: Games; Publication Type: Journal Article; Update Code: 199412 N2 - This paper explores boundedly rational behavior in the infinitely repeated prisoners' dilemma. Strategy choices are modeled as finite automata and the evolution of populations through asexual reproduction with mutation is explored. Evolutionary success is based on how well the strategy does in an infinite game against randomly matched opponents and mutation schemes based on a stylized model of these strategies are employed. The results demonstrate when either defecting or cooperating strategies tend to evolve, depending on how important the future is. Interestingly, when the strategies are allowed to become tolerant of defections, the population cycles between defecting and cooperating strategies. KW - Stochastic and Dynamic Games; Evolutionary Games; Repeated Games C73 KW - Noncooperative Games C72 L3 - http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291465-7295/issues UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0329957&site=ehost-live&scope=site UR - http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291465-7295/issues DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 107440076 T1 - Handlebar problems in bicycling. AU - Richmond DR Y1 - 1994/01//1994 Jan N1 - Accession Number: 107440076. Language: English. Entry Date: 19940501. Revision Date: 20150711. Publication Type: Journal Article. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 8112473. KW - Cycling KW - Sports Equipment and Supplies KW - Nerve Compression Syndromes SP - 165 EP - 173 JO - Clinics in Sports Medicine JF - Clinics in Sports Medicine JA - CLIN SPORTS MED VL - 13 IS - 1 CY - Philadelphia, Pennsylvania PB - W B Saunders SN - 0278-5919 AD - Family Practice Residency, Malcolm Grow United States Air Force Med Ctr, Andrews Air Force Base MD U2 - PMID: 8111850. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107440076&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Franck, Raymond E., Jr. AU - Hildebrandt, Gregory G. AD - US Air Force Academy AD - Naval Postgraduate School T1 - Alternatives for Defense in the Post-Soviet World: A Guide for Economists to the U.S. Debate JO - Defence and Peace Economics JF - Defence and Peace Economics Y1 - 1994/// VL - 5 IS - 1 SP - 37 EP - 50 SN - 10430717 N1 - Accession Number: 0328199; Keywords: Defense; National Security; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 199409 N2 - The defense establishments of all major powers are changing to reflect changes in the foundations of national security strategy and resource allocation. The authors believe economists should play an active role in formulating these changes and offer an orientation to the U.S. debate, presenting three major alternatives: the "Base Force" (Bush Administration), Mr. Aspin's Force "C," and the "Low" alternative (Prof. Kaufmann and Dr. Steinbruner). These alternatives are compared using first-order measures of capabilities, budgets and risk. Budgetary estimates are based on newly developed analytical tools. KW - Conflict; Conflict Resolution; Alliances D74 KW - National Security and War H56 L3 - http://www.tandfonline.com/loi/gdpe20 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0328199&site=ehost-live&scope=site UR - http://www.tandfonline.com/loi/gdpe20 DP - EBSCOhost DB - ecn ER - TY - CHAP AU - Jones, Hadd AD - US Air Force Academy A2 - Perkins, Edwin J. T1 - Testing the Waters: The Waco Aircraft Company and the Decision to Join the Defense Effort T2 - Essays in economic and business history. Volume 12. Selected papers from the Economic and Business Historical Society, 1993 PB - Los Angeles: PB - University of Southern California, History Department for the Economic and Business Historical Society Y1 - 1994/// SP - 133 EP - 144 N1 - Accession Number: 0430527; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Collective Volume Article; Update Code: 199711 KW - National Government Expenditures and Related Policies: Procurement H57 KW - Other Machinery; Business Equipment; Armaments L64 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0430527&site=ehost-live&scope=site DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 1994-23717-001 AN - 1994-23717-001 AU - Rueb, Justin D. AU - Vidulich, Michael A. AU - Hassoun, John A. T1 - Use of workload redlines: A KC-135 crew-reduction application. JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 1994/// VL - 4 IS - 1 SP - 47 EP - 64 CY - US PB - Lawrence Erlbaum SN - 1050-8414 SN - 1532-7108 N1 - Accession Number: 1994-23717-001. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Rueb, Justin D.; US Air Force Academy, Colorado Springs, CO, US. Other Publishers: Taylor & Francis. Release Date: 19940601. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Flight Instrumentation; Human Machine Systems Design; Job Performance; Work Load. Minor Descriptor: Flight Simulation; Human Factors Engineering. Classification: Human Factors Engineering (4010); Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. Page Count: 18. Issue Publication Date: 1994. AB - Established and used workload redlines in determining the feasibility of a 2-person (no navigator) KC-135 conceptual cockpit design. 10 KC-135 crews and 2 KC-10 crews were required to fly several simulator missions over a period of 1 wk. Objective and subjective measures of performance and workload (Subjective Workload Assessment Technique and Subjective Workload Dominance) were taken during and after each flight. The various performance measures and the subjective-workload measures provided convergent results supporting the feasibility of the conceptual design. Recommendations on the use of redline procedures and their future application are discussed. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - performance & work load redlines & feasibility of KC-135 reduced crew conceptual cockpit design KW - K-135 & K-10 Air Force crews KW - 1994 KW - Air Force Personnel KW - Flight Instrumentation KW - Human Machine Systems Design KW - Job Performance KW - Work Load KW - Flight Simulation KW - Human Factors Engineering KW - 1994 DO - 10.1207/s15327108ijap0401_3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1994-23717-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 1994-22258-001 AN - 1994-22258-001 AU - Jackson, R. Jeffrey T1 - A multimodal method for assessing and treating airsickness. JF - The International Journal of Aviation Psychology JO - The International Journal of Aviation Psychology JA - Int J Aviat Psychol Y1 - 1994/// VL - 4 IS - 1 SP - 85 EP - 96 CY - US PB - Lawrence Erlbaum SN - 1050-8414 SN - 1532-7108 N1 - Accession Number: 1994-22258-001. Other Journal Title: The International Journal of Aerospace Psychology. Partial author list: First Author & Affiliation: Jackson, R. Jeffrey; US Air Force Academy, Dept of Behavioral Sciences, Colorado Springs, CO, US. Other Publishers: Taylor & Francis. Release Date: 19940601. Correction Date: 20170206. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Diagnosis; Motion Sickness; Multimodal Treatment Approach. Classification: Health & Mental Health Treatment & Prevention (3300). Population: Human (10). Page Count: 12. Issue Publication Date: 1994. AB - Proposes an airsickness model that maps directly onto the framework of multimodal therapy. The model is based on 7 components of experiential modalities relevant to the onset of airsickness, including behavior, affect, sensation, imagery, cognition, interpersonal factors, and drugs/biological processes. A particular pattern of excesses and deficits among these factors, and the interactions between them, would be predicted to facilitate the airsickness syndrome. Each component of the model can be reasonably managed through a rationally selected treatment strategy to address the specific complaints and symptoms presented. Treatment techniques include relaxation exercises, chair flying, simulated aircraft maneuvers, reduced head movement, biofeedback training, imagery-based exercises, communication skills, and antimotion sickness medication. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - multimodal assessment & treatment of airsickness syndrome KW - 1994 KW - Diagnosis KW - Motion Sickness KW - Multimodal Treatment Approach KW - 1994 DO - 10.1207/s15327108ijap0401_5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1994-22258-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 1995-27049-001 AN - 1995-27049-001 AU - Gall, James E. AU - Hannafin, Michael J. T1 - A framework for the study of hypertext. JF - Instructional Science JO - Instructional Science JA - Instr Sci Y1 - 1994/// VL - 22 IS - 3 SP - 207 EP - 232 CY - Germany PB - Springer SN - 0020-4277 SN - 1573-1952 N1 - Accession Number: 1995-27049-001. Partial author list: First Author & Affiliation: Gall, James E.; US Air Force Academy, Ctr for Educational Excellence, CO, US. Release Date: 19950701. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Computer Assisted Instruction; Learning Theory; Text Structure. Classification: Curriculum & Programs & Teaching Methods (3530); Intelligent Systems (4100). Population: Human (10). Page Count: 26. Issue Publication Date: 1994. AB - Presents a historical perspective on the evolution of hypertext (HTX) developments, provides an overview of HTX components and issues, and examines the relevance of learning theory and design constructs to HTX. The underlying attributes of HTX systems can be described through 3 primary structures: macro-level (including a knowledge base, an interface, and navigational capabilities); micro-level (comprised of nodes and links); and control (including searching, browsing, connecting, and collecting). A framework for the study of HTX, with implications for theory, research, and development, is described. While the framework itself is an evolutionary product, it provides an integrated method for studying important relationships and provides a structure within which research may be organized, allowing a more thoughtful analysis of the implications of past research conducted on HTX learning systems. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - evolution & structure & theoretical framework for study of hypertext learning systems KW - 1994 KW - Computer Assisted Instruction KW - Learning Theory KW - Text Structure KW - 1994 DO - 10.1007/BF00892243 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1995-27049-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR TY - GEN AU - Sato, S. J.; AU - Weingart, D. L.; AU - Vaughan, J. G.; AU - Brier, K. L.; T1 - Sports pharmacy clerkship\M/designing a custom educational experience CT - Sports pharmacy clerkship\M/designing a custom educational experience JO - ASHP Midyear Clinical Meeting JF - ASHP Midyear Clinical Meeting Y1 - 1993/12/01/ VL - 28 IS - Dec SP - MCS EP - -15 AD - United States Air Force Academy Hospital/SGHP, 4102 Pinon Drive, Suite 100, USAF Academy, Colorado Springs, CO 80840-4000, USA N1 - Accession Number: 30-14200; Language: English; Publication Type: Abstract of Meeting Presentation; Section Heading: Pharmaceutical Education; Institutional Pharmacy Practice N2 - A multidisciplinary approach for designing both traditional and customized clerkships will be described. The department of pharmacy recognized the need for the education of pharmacists in the drug and non-drug treatment of athletic injuries/diseases and non-pharmaceutical means of enhancing performance. A goal setting meeting with the preceptors and educators concluded involvement of many different health care professionals was ideal to provide the students the best educational experience. The establishment of these customized clerkships illustrated the active role pharmacists must play as a member of a well-integrated medical team. KW - Management Case Studies--meeting presentations; KW - ASHP meeting abstracts--sports pharmacy; KW - Education, pharmaceutical--clerkships--sports pharmacy, pharmacists role; KW - Pharmacists--role--sports pharmacy clerkships; KW - Team--medical--pharmacists role, sports pharmacy, clerkships; KW - Administration--hospital pharmacy--pharmacists role, sports pharmacy, clerkships; KW - Pharmacy, institutional, hospital--administration--sports pharmacy clerkships; KW - Sports--clerkships--pharmacy; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ipa&AN=30-14200&site=ehost-live&scope=site DP - EBSCOhost DB - ipa ER - TY - JOUR ID - 107438644 T1 - The role of osteotomy in the anterior cruciate ligament-deficient knee. AU - Miller MD AU - Fu FH Y1 - 1993/10//1993 Oct N1 - Accession Number: 107438644. Language: English. Entry Date: 19940401. Revision Date: 20150711. Publication Type: Journal Article; pictorial; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 8112473. KW - Osteotomy -- Methods KW - Anterior Cruciate Ligament -- Surgery KW - Knee Surgery SP - 697 EP - 708 JO - Clinics in Sports Medicine JF - Clinics in Sports Medicine JA - CLIN SPORTS MED VL - 12 IS - 4 CY - Philadelphia, Pennsylvania PB - W B Saunders SN - 0278-5919 AD - Dept Orthopaedic Surg, US Air Force Academy, Colorado Springs CO U2 - PMID: 8261521. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107438644&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 107476317 T1 - Posterior cruciate ligament injuries: current concepts in diagnosis and treatment. AU - Miller MD AU - Harner CD Y1 - 1993/10// N1 - Accession Number: 107476317. Language: English. Entry Date: 19931201. Revision Date: 20150712. Publication Type: Journal Article; pictorial. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 0427461. KW - Posterior Cruciate Ligament Injuries KW - Knee Injuries -- Diagnosis KW - Knee Injuries -- Therapy KW - Athletic Injuries SP - 38 EP - 47 JO - Physician & Sportsmedicine JF - Physician & Sportsmedicine JA - PHYSICIAN SPORTSMED VL - 21 IS - 10 CY - Philadelphia, Pennsylvania PB - Taylor & Francis Ltd SN - 0091-3847 AD - United States Air Force Academy, Colorado Springs, CO UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107476317&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Linster, Bruce G. AD - US Air Force Academy T1 - Stackelberg Rent-Seeking JO - Public Choice JF - Public Choice Y1 - 1993/10// VL - 77 IS - 2 SP - 307 EP - 321 SN - 00485829 N1 - Accession Number: 0299709; Keywords: Equilibrium; Rent Seeking; Publication Type: Journal Article; Update Code: 199403 N2 - In this paper, the author presents a formal analysis of rent-seeking games in which the players do not move simultaneously. He considers rent-seeking situations where the players are risk neutral and may value the prize differently. The subgame perfect equilibrium outcome in this Stackelberg game provides several surprising and interesting results. The author extends the problem to deal with cases of incomplete information concerning the value a player has for the politically contestable rent. KW - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior D72 L3 - http://link.springer.com/journal/volumesAndIssues/11127 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0299709&site=ehost-live&scope=site UR - http://link.springer.com/journal/volumesAndIssues/11127 DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Linster, Bruce G. AD - US Air Force Academy T1 - A Generalized Model of Rent-Seeking Behavior JO - Public Choice JF - Public Choice Y1 - 1993/10// VL - 77 IS - 2 SP - 421 EP - 435 SN - 00485829 N1 - Accession Number: 0299717; Keywords: Rent Seeking; Publication Type: Journal Article; Update Code: 199403 N2 - In this paper, the author presents a formal analysis of rent-seeking games in which the players' valuations for the prize are represented as vectors. The players in this game are risk neutral and may not be indifferent to who wins the contestable rent if it is someone else. Both G. Tullock's (1967) original rent-seeking model and the public goods rent-seeking model by E. Katz, S. Nitzan, and J. Rosenberg (1990). turn out to be special cases of this more general model. KW - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior D72 L3 - http://link.springer.com/journal/volumesAndIssues/11127 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0299717&site=ehost-live&scope=site UR - http://link.springer.com/journal/volumesAndIssues/11127 DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 1994-13297-001 AN - 1994-13297-001 AU - Gibson, Frederick W. AU - Fiedler, Fred E. AU - Barrett, Kelley M. T1 - Stress, babble, and the utilization of the leader's intellectual abilities. JF - The Leadership Quarterly JO - The Leadership Quarterly JA - Leadersh Q Y1 - 1993///Sum 1993 VL - 4 IS - 2 SP - 189 EP - 208 CY - Netherlands PB - Elsevier Science SN - 1048-9843 N1 - Accession Number: 1994-13297-001. Partial author list: First Author & Affiliation: Gibson, Frederick W.; US Air Force Academy, Colorado Springs, CO, US. Release Date: 19940401. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Ability; Group Performance; Leadership; Stress. Minor Descriptor: Army Personnel; Navy Personnel; ROTC Students. Classification: Group & Interpersonal Processes (3020); Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. Page Count: 20. Issue Publication Date: Sum 1993. AB - Investigated leader and member behaviors which account for the consistent counterintuitive finding that interpersonal stress moderates the leader's effective utilization of intellectual abilities. Specifically, under conditions of stress, leader intelligence and creativity correlated negatively or not at all with group performance, especially if the leader reported stress with the immediate superior. Content analyses of group discussions generated in a group creativity experiment conducted by W. A. Meuwese and F. F. Fiedler (1965) and involving 54 randomly assigned 3-person teams of Army and Navy ROTC cadets showed that under stress, more gifted leaders talked more but offered fewer substantive ideas. These leaders also inhibited group members from contributing to the task. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - interpersonal stress KW - utilization of leader's intellectual abilities & group performance KW - Army & Navy ROTC cadets KW - 1993 KW - Cognitive Ability KW - Group Performance KW - Leadership KW - Stress KW - Army Personnel KW - Navy Personnel KW - ROTC Students KW - 1993 DO - 10.1016/1048-9843(93)90011-H UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1994-13297-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 1993-39554-001 AN - 1993-39554-001 AU - McKinney, Earl H. T1 - Flight leads and crisis decision-making. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 1993/05// VL - 64 IS - 5 SP - 359 EP - 362 CY - US PB - Aerospace Medical Assn SN - 0095-6562 N1 - Accession Number: 1993-39554-001. PMID: 8503806 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: McKinney, Earl H.; US Air Force Academy, CO, US. Release Date: 19931001. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aircraft Pilots; Aviation; Crises; Decision Making; Job Experience Level. Minor Descriptor: Air Force Personnel; Leadership. Classification: Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. Page Count: 4. Issue Publication Date: May, 1993. AB - Examined the crisis decision-making of pilots in the role of flight lead or wingman, using data from 156 fighter aircraft mechanical breakdown mishaps. Effectiveness of decision making was judged and compared with pilot experience level and flight position. Decision-making performance of flight leads was significantly inferior to that of wingmen. This effect of flight leadership only affected experienced pilots. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - experience level KW - crisis decision making KW - Air Force pilots in lead vs wingman flight position KW - 1993 KW - Aircraft Pilots KW - Aviation KW - Crises KW - Decision Making KW - Job Experience Level KW - Air Force Personnel KW - Leadership KW - 1993 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1993-39554-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Alm, James AU - Beck, William AD - U CO, Boulder AD - US Air Force Academy T1 - Tax Amnesties and Compliance in the Long Run: A Time Series Analysis JO - National Tax Journal JF - National Tax Journal Y1 - 1993/03// VL - 46 IS - 1 SP - 53 EP - 60 SN - 00280283 N1 - Accession Number: 0290629; Keywords: Compliance; Tax; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 199309 N2 - This paper discusses time series methods that can be used to examine the long-run effects of a tax amnesty and applies these methods to the 1985 Colorado amnesty. Several time series mode ls are estimated: simple ordinary least squares time trend models, univariate time series models, and multivariate intervention models. The empirical results from all models strongly indicate that the Colorado amnesty had no long-run impact on either the level or the trend of tax collections. This result suggests that a typical amnest y seems unlikely to generate significant new revenues but also seems unlikely to compromise voluntary compliance. KW - Tax Evasion H26 L3 - http://ntj.tax.org UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0290629&site=ehost-live&scope=site UR - http://ntj.tax.org DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Linster, Bruce G. AD - US Air Force Academy T1 - A Rent-Seeking Model of International Competition and Alliances JO - Defence Economics JF - Defence Economics Y1 - 1993/// VL - 4 IS - 3 SP - 213 EP - 226 SN - 10430717 N1 - Accession Number: 0296580; Keywords: Alliances; Contests; Defense; Rent Seeking; Publication Type: Journal Article; Update Code: 199312 N2 - This paper presents an alternative approach for analyzing international competition and alliances as rent-seeking contests that are able to capture the impure public good nature of defense spending. Two-country Cournot and Stackelberg games are considered and comparative static results derived. A three-country model is investigated, and alliance behavior is explored in the context of this rent-seeking model. The conjecture that an alliance may become less effective if the allies' interests become more closely aligned is verified. Finally, the model is generalized, and a Nash-Cournot equilibrium is computed. KW - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior D72 KW - Conflict; Conflict Resolution; Alliances D74 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0296580&site=ehost-live&scope=site DP - EBSCOhost DB - ecn ER - TY - CHAP ID - 1994-97437-003 AN - 1994-97437-003 AU - Hannafin, Kathleen McDermott ED - Modell, Harold I. ED - Michael, Joel A. ED - Modell, Harold I., (Ed) ED - Michael, Joel A., (Ed) T1 - Designing process-oriented learning resources. T2 - Promoting active learning in the life science classroom. T3 - Annals of the New York Academy of Sciences; Vol 701; ISSN: 0077-8923 (Print) Y1 - 1993/// VL - 701 SP - 77 EP - 82 CY - New York, NY, US PB - New York Academy of Sciences SN - 0077-8923 SN - 0-89766-829-4 SN - 0-89766-830-8 N1 - Accession Number: 1994-97437-003. Partial author list: First Author & Affiliation: Hannafin, Kathleen McDermott; US Air Force Academy, Dept of Behavioral Science & Leadership, CO, US. Release Date: 19940901. Correction Date: 20150713. Publication Type: Book (0200), Edited Book (0280). Format Covered: Print. Document Type: Chapter. ISBN: 0-89766-829-4, Hardcover; 0-89766-830-8, Paperback. Language: English. Major Descriptor: Cognitive Processes; School Learning; Teaching Methods. Classification: Curriculum & Programs & Teaching Methods (3530). Population: Human (10). Intended Audience: Psychology: Professional & Research (PS). Page Count: 6. AB - during the last 20 yrs, researchers and educators have focused great interest and effort on designing and developing learning resources which facilitate student thinking, critical reasoning, problem solving skills, and ability to connect and transform information into new understandings / describes one means of designing such resources process-oriented resources are defined as teaching and learning activities which engage students cognitively in analyzing and transforming information overview of process-oriented learning resources [cognitive engagement, knowledge reconstruction, resource options, and teaching methodologies] / guidelines for developing process-oriented resources (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - design & development of process oriented learning resources for cognitive engagement & knowledge reconstruction KW - 1993 KW - Cognitive Processes KW - School Learning KW - Teaching Methods KW - 1993 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1994-97437-003&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 107458431 T1 - Effect of variation in the burst and carrier frequency modes of neuromuscular electrical stimulation on pain perception of healthy subjects... including commentary by Delitto A with author response. AU - Rooney JG AU - Currier DP AU - Nitz AJ Y1 - 1992/11//1992 Nov N1 - Accession Number: 107458431. Language: English. Entry Date: 19930201. Revision Date: 20150712. Publication Type: Journal Article; commentary; research; response; tables/charts. Journal Subset: Allied Health; Peer Reviewed; USA. NLM UID: 0022623. KW - Pain KW - Electric Stimulation -- Evaluation KW - Electric Stimulation -- Methods KW - Muscles KW - Muscle Strengthening KW - Torque KW - Evaluation Research KW - Dynamometry KW - Leg KW - Analysis of Variance KW - Descriptive Statistics KW - Adult KW - Male KW - Female KW - Human SP - 800 EP - 809 JO - Physical Therapy JF - Physical Therapy JA - PHYS THER VL - 72 IS - 11 CY - Alexandria, Virginia PB - American Physical Therapy Association AB - The purpose of this study was to explore the effect of various combinations of burst and carrier frequencies of neuromuscular electrical stimulation (NMES) on subjects' perception of pain intensity associated with induction of high intensity muscle contractions. Twenty-seven healthy volunteers completed the study. After the initial test session, all subjects were treated in three additional sessions with nine combinations of burst frequencies (50, 70, and 90 bursts per second [bps]) and carrier frequencies (2,500, 5,000, and 10,000 Hz) at an NMES amplitude that produced torque equivalent to 50% of maximal voluntary contraction of their quadriceps femoris muscle. Subjects rated each frequency combination for perceived pain intensity with a visual analog scale. The combinations of burst frequencies (50, k70, and 90 bps) and carrier frequencies (2,500 and 5,000 Hz) do not differ from each other in perceived pain intensity but do differ significantly in perceived pain from the combinations of burst frequencies at the carrier frequency of 10,000 Hz. Thus, the clinician may have to try different stimulus combinations on patients at different current training levels to obtain the least individually perceived pain. SN - 0031-9023 AD - Coordinator Sports Med, United States Air Force Academy, Colorado Springs, CO 80840 U2 - PMID: 1409877. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107458431&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR AU - Fiedler, Fred E. AU - Murphy, Susan E. AU - Gibson, Frederick W. T1 - Inaccurate Reporting and Inappropriate Variables: A Reply to Vecchio's (199O) Examination of Cognitive Resource Theory. JO - Journal of Applied Psychology JF - Journal of Applied Psychology Y1 - 1992/06// VL - 77 IS - 3 M3 - Article SP - 372 EP - 374 PB - American Psychological Association SN - 00219010 AB - In an article in the Journal of Applied Psychology, Vecchio (1990) purported to test cognitive resource theory (Fiedler, 1986; Fiedler & Garcia, 1987). We present evidence that Vecchio's article seriously misrepresented previous work on cognitive resource theory and also contained several flaws in methodology that call into question his conclusions regarding the validity of cognitive resource theory. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Psychology is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEADERSHIP KW - MANAGEMENT -- Employee participation KW - INTERPERSONAL relations KW - MANAGEMENT KW - COGNITION KW - STRESS (Psychology) KW - PSYCHOLOGY N1 - Accession Number: 12359392; Fiedler, Fred E. 1; Murphy, Susan E. 1; Gibson, Frederick W. 2; Affiliations: 1: University of Washington.; 2: United States Air Force Academy, Colorado Springs, Colorado.; Issue Info: Jun92, Vol. 77 Issue 3, p372; Thesaurus Term: LEADERSHIP; Thesaurus Term: MANAGEMENT -- Employee participation; Thesaurus Term: INTERPERSONAL relations; Thesaurus Term: MANAGEMENT; Subject Term: COGNITION; Subject Term: STRESS (Psychology); Subject Term: PSYCHOLOGY; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12359392&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 1992-38615-001 AN - 1992-38615-001 AU - Jordan, Donald L. AU - Page, Benjamin I. T1 - Shaping foreign policy opinions: The role of TV news. JF - Journal of Conflict Resolution JO - Journal of Conflict Resolution JA - J Conflict Resolut Y1 - 1992/06// VL - 36 IS - 2 SP - 227 EP - 241 CY - US PB - Sage Publications SN - 0022-0027 SN - 1552-8766 N1 - Accession Number: 1992-38615-001. Partial author list: First Author & Affiliation: Jordan, Donald L.; US Air Force Academy, US. Release Date: 19921101. Correction Date: 20121015. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Content Analysis; Foreign Policy Making; Public Opinion; Television. Classification: Mass Media Communications (2750). Population: Human (10). Page Count: 15. Issue Publication Date: Jun, 1992. AB - Discusses the influences that shape the foreign policy preferences of the US public. A data set of 32 foreign policy cases, involving repeated measures of public opinion and content analyses of TV news broadcasts (before and between opinion surveys), was used to estimate the impact of news stories from various sources on opinion. Reported statements and actions by media commentators, allegedly nonpartisan experts, opposition party figures, and popular (but not unpopular) presidents have the largest estimated effects, while the impact of other sources is negligible. Despite ideas about 2 presidencies, the process of shaping opinion on foreign policy does not appear different from that affecting domestic policy preferences. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - source of TV foreign policy news KW - public opinion KW - content analysis of news broadcasts KW - 1992 KW - Content Analysis KW - Foreign Policy Making KW - Public Opinion KW - Television KW - 1992 DO - 10.1177/0022002792036002001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1992-38615-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Roth, R. Theodore T1 - The Impact of Decreased Defense Spending on Employment in the United States. JO - Armed Forces & Society (Sage Publications Inc.) JF - Armed Forces & Society (Sage Publications Inc.) Y1 - 1992///Spring92 VL - 18 IS - 3 M3 - Article SP - 383 EP - 405 AB - The combined pressures of reduced East-West tensions and large budget deficits in the United States have led to the enactment of reduced defense budgets. Future reductions in spending could be 25% less in real terms from fiscal year 1990 levels. These decreases will affect employment of active duty military personnel, Department of Defense civilians, and workers in private sector defense industries. If the reductions in force structure take place at a controlled rate, the necessary cuts among active duty forces and Department of Defense civilians should be manageable through attrition and reduced accessions. The backlog of authorizations and foreign sales will slow any industrial downturn in the defense sector. The rate and magnitude of the defense spending decreases are smaller than in previous postwar cutbacks, and much of the decrease has already taken place since the peak of authorizations in fiscal year 1985. Although certain individuals will be affected by reductions in defense spending, the overall impact upon the economy will be similar to other structural unemployment. Job training and economic recovery legislation are sufficient to handle this decrease in spending and the transfer of individuals to the private sector. These cutbacks will not significantly affect the macroeconomy of the United States, although certain localities, occupations, and industries may encounter short-term difficulties. [ABSTRACT FROM AUTHOR] AB - Copyright of Armed Forces & Society (Sage Publications Inc.) is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARMED Forces -- Appropriations & expenditures KW - PRIVATE sector KW - MACROECONOMICS KW - FOREIGN sales corporations KW - FEDERAL government KW - EMPLOYMENT (Economic theory) KW - BUDGET KW - UNITED States N1 - Accession Number: 32439629; Roth, R. Theodore 1; Affiliations: 1 : Department of Economics and Geography, United States Air Force Academy; Source Info: Spring92, Vol. 18 Issue 3, p383; Historical Period: 1990; Subject Term: ARMED Forces -- Appropriations & expenditures; Subject Term: PRIVATE sector; Subject Term: MACROECONOMICS; Subject Term: FOREIGN sales corporations; Subject Term: FEDERAL government; Subject Term: EMPLOYMENT (Economic theory); Subject Term: BUDGET; Subject: UNITED States; Number of Pages: 23p; Illustrations: 4 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ahl&AN=32439629&site=ehost-live&scope=site DP - EBSCOhost DB - ahl ER - TY - JOUR AU - Linster, Bruce G. AD - US Air Force Academy T1 - Evolutionary Stability in the Infinitely Repeated Prisoners' Dilemma Played by Two-State Moore Machines JO - Southern Economic Journal JF - Southern Economic Journal Y1 - 1992/04// VL - 58 IS - 4 SP - 880 EP - 903 SN - 00384038 N1 - Accession Number: 0268488; Publication Type: Journal Article; Update Code: 199209 N2 - This paper explores boundedly rational behavior in the infinitely repeated prisoners' dilemma by modeling the possible strategy choices as finite automata. The author explores how the population evolves after playing an infinitely repeated prisoners' dilemma with a randomly matched opponent. The population reproduces asexually with evolutionary success based on how well the strategy did. The author also allows mutation schemes based on a stylized model of these strategies and explores how the cost of strategic complexity affects the population. The results demonstrate the evolutionary success of cooperative strategies as long as increased complexity is not too costly. KW - Stochastic and Dynamic Games; Evolutionary Games; Repeated Games C73 L3 - http://journal.southerneconomic.org/loi/soec UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0268488&site=ehost-live&scope=site UR - http://journal.southerneconomic.org/loi/soec DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 1993-12208-001 AN - 1993-12208-001 AU - Aretz, Anthony J. AU - Wickens, Christopher D. T1 - The mental rotation of map displays. JF - Human Performance JO - Human Performance Y1 - 1992/// VL - 5 IS - 4 SP - 303 EP - 328 CY - US PB - Lawrence Erlbaum SN - 0895-9285 SN - 1532-7043 N1 - Accession Number: 1993-12208-001. Partial author list: First Author & Affiliation: Aretz, Anthony J.; US Air Force Academy, CO, US. Other Publishers: Taylor & Francis. Release Date: 19930401. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Mental Rotation; Perceptual Localization; Visual Displays. Classification: Cognitive Processes (2340). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. Page Count: 26. Issue Publication Date: 1992. AB - Two experiments investigated the cognitive processes used during map reading by 24 male undergraduates. The hypothesis examined was that localization using a map is the product of a cognitive alignment between 2 frames of reference. The ego-centered reference frame corresponds to the forward perceptual view of the world, whereas the world-centered reference frame corresponds to a location on the map. The data suggest that mental rotation is involved in the alignment in a 2-step process. Although mental rotation may be generalized outside the laboratory to navigation tasks, the data also suggest that when the rotation becomes too complex, a more analytic approach is used. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - localization & mental rotation in map reading KW - male college students KW - 1992 KW - Mental Rotation KW - Perceptual Localization KW - Visual Displays KW - 1992 DO - 10.1207/s15327043hup0504_3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1993-12208-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 107479048 T1 - The pre-intake drop-out at a community mental health center. AU - Orme DR AU - Boswell D Y1 - 1991/10//1991 Oct N1 - Accession Number: 107479048. Language: English. Entry Date: 19920201. Revision Date: 20150712. Publication Type: Journal Article. Journal Subset: Biomedical; Continental Europe; Europe; Peer Reviewed. NLM UID: 0005735. KW - Community Mental Health Services KW - Appointments and Schedules KW - Patient Compliance KW - Chi Square Test KW - Age Factors KW - Time Factors SP - 375 EP - 379 JO - Community Mental Health Journal JF - Community Mental Health Journal JA - COMMUNITY MENT HEALTH J VL - 27 IS - 5 CY - , PB - Springer Science & Business Media B.V. AB - Characteristics of patients who failed to appear for their intake interviews at a community mental health center were contrasted with those who did follow through with their appointments. Findings suggest that characteristics associated with dropping out are likely to vary with patient groups. Show rates for adults who were seeking help for themselves were significantly related to parental status and the length of time from the day of scheduling an intake interview until that appointment. Patient-therapist gender matches were related to the probability of children showing for intake interviews. SN - 0010-3853 AD - United States Air Force, PSC Box 1849, APO, NY 09179-5300 U2 - PMID: 1934997. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=rzh&AN=107479048&site=ehost-live&scope=site DP - EBSCOhost DB - rzh ER - TY - JOUR ID - 1992-14885-001 AN - 1992-14885-001 AU - Baldi, Karen A. T1 - An overview of physical fitness of female cadets at the military academies. JF - Military Medicine JO - Military Medicine JA - Mil Med Y1 - 1991/10// VL - 156 IS - 10 SP - 537 EP - 539 CY - US PB - Assn of Military Surgeons of the US SN - 0026-4075 SN - 1930-613X N1 - Accession Number: 1992-14885-001. PMID: 1749498 Partial author list: First Author & Affiliation: Baldi, Karen A.; US Air Force Academy, Colorado Springs, CO, US. Release Date: 19920401. Correction Date: 20170302. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Human Females; Military Personnel; Physical Fitness. Classification: Military Psychology (3800). Population: Human (10); Female (40). Page Count: 3. Issue Publication Date: Oct, 1991. AB - Examines the performance in physical fitness programs of female cadets in military academies from 1979 to 1989 and finds that females are capable of a much higher level of physical performance than had previously been anticipated. This contradicts one of the chief arguments against allowing women to perform in combat roles and may lead to a rise in self-esteem and perceived usefulness. (PsycINFO Database Record (c) 2017 APA, all rights reserved) KW - physical fitness KW - female cadets in military academies KW - 1979–89 KW - 1991 KW - Human Females KW - Military Personnel KW - Physical Fitness KW - 1991 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1992-14885-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Angelo, Nickolas P. T1 - Coaching Competitive Debate: What Does It Take? JO - Florida Communication Journal JF - Florida Communication Journal Y1 - 1991/09// VL - 19 IS - 2 M3 - Article SP - 56 EP - 60 PB - Florida Communication Journal SN - 10503366 AB - The authors discusses the elements involve in coaching competitive debate. According to the author, coaching competitive debate focuses on the activities of the debate-forensics squad. He explores the qualifications of the debate instructor as a premise to success. He also considers coaches as professionals and stresses that professionalism is the adherence to what is required in a given occupation. In addition, the author assesses participation in community service as a vital link to needed financial resources for debate travel. KW - Debates & debating KW - Forensics (Public speaking) KW - Public speaking KW - Personal coaching KW - Social services KW - Professionalism N1 - Accession Number: 34970281; Angelo, Nickolas P. 1,2; Affiliations: 1: Test consultant for the United States Air Force; 2: University of West Florida; Issue Info: 1991, Vol. 19 Issue 2, p56; Thesaurus Term: Debates & debating; Thesaurus Term: Forensics (Public speaking); Thesaurus Term: Public speaking; Subject Term: Personal coaching; Subject Term: Social services; Subject Term: Professionalism; NAICS/Industry Codes: 624190 Other Individual and Family Services; NAICS/Industry Codes: 812990 All Other Personal Services; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=34970281&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - JOUR ID - 1992-07887-001 AN - 1992-07887-001 AU - Porter, David B. T1 - Computer games and cognitive processes: Two tasks, two modes, too much? T3 - The retirement of Donald Broadbent JF - British Journal of Psychology JO - British Journal of Psychology JA - Br J Psychol Y1 - 1991/08// VL - 82 IS - 3 SP - 343 EP - 357 CY - United Kingdom PB - British Psychological Society SN - 0007-1269 SN - 2044-8295 N1 - Accession Number: 1992-07887-001. Partial author list: First Author & Affiliation: Porter, David B.; US Air Force Academy, CO, US. Other Publishers: Wiley-Blackwell Publishing Ltd. Release Date: 19920301. Correction Date: 20111114. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Processes; Computer Games; Distraction; Memory. Minor Descriptor: Task Complexity. Classification: Cognitive Processes (2340). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. Page Count: 15. Issue Publication Date: Aug, 1991. AB - Two experiments with 44 Ss (aged 18–38 yrs) examined the effects of a concurrent memory load on the performance of 2 arcade-type computer game tasks designed to elicit different types of processing. The 'plankton' task was simple but uncertain; the 'kayak' task was complex but predictable. Results show that Ss altered their performance according to priority instructions. Performance of both tasks was enhanced by practice. A verbal side task for memory load did not have a significant effect on the kayak task but had a negative effect on the plankton task. Exp 2 sought to replicate and extend the results of Exp 1 by employing 2 different verbal side tasks with the same video games. There was a nonsignificant trend showing that directional words slightly interfered with performance of the plankton task but had slight facilitative effects on the kayak task. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - concurrent memory load KW - performance on simple but uncertain vs complex but predictable computer game task KW - 18–38 yr olds KW - 1991 KW - Cognitive Processes KW - Computer Games KW - Distraction KW - Memory KW - Task Complexity KW - 1991 DO - 10.1111/j.2044-8295.1991.tb02404.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1992-07887-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Ree, Malcolm James AU - Earles, James A. T1 - PREDICTING TRAINING SUCCESS: NOT MUCH MORE THAN g. JO - Personnel Psychology JF - Personnel Psychology Y1 - 1991///Summer91 VL - 44 IS - 2 M3 - Article SP - 321 EP - 332 PB - Wiley-Blackwell SN - 00315826 AB - The roles of general ability (g) and specific abilities (s1…sg) were investigated in prediction of job-training-school grades. Subjects were 78,041 Air Force enlistees in 82 jobs. General ability and specific abilities were defined by scores on the first and subsequent unrotated principal components of the enlistment selection and classification test, the Armed Services Vocational Aptitude Battery. Linear models analyses revealed that s1…Sg added little to the prediction afforded by g. It was also determined that a common prediction equation for all jobs was almost as predictive as an equation for each job. [ABSTRACT FROM AUTHOR] AB - Copyright of Personnel Psychology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OCCUPATIONAL training KW - CAREER education KW - INTERNSHIP programs KW - LINEAR models (Statistics) KW - OCCUPATIONS KW - GENERAL aptitude test battery KW - UNITED States. Air Force -- Officials & employees KW - ABILITY testing KW - EDUCATIONAL tests & measurements N1 - Accession Number: 9609225608; Ree, Malcolm James 1; Earles, James A. 1; Affiliations: 1: Armstrong Laboratory, United States Air Force; Issue Info: Summer91, Vol. 44 Issue 2, p321; Thesaurus Term: OCCUPATIONAL training; Thesaurus Term: CAREER education; Thesaurus Term: INTERNSHIP programs; Thesaurus Term: LINEAR models (Statistics); Thesaurus Term: OCCUPATIONS; Subject Term: GENERAL aptitude test battery; Subject Term: UNITED States. Air Force -- Officials & employees; Subject Term: ABILITY testing; Subject Term: EDUCATIONAL tests & measurements; NAICS/Industry Codes: 624310 Vocational Rehabilitation Services; NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; NAICS/Industry Codes: 928110 National Security; Number of Pages: 12p; Illustrations: 4 Charts; Document Type: Article; Full Text Word Count: 4810 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=9609225608&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Brock, John R. AD - US Air Force Academy T1 - Teaching Tools: A Public Goods Experiment for the Classroom JO - Economic Inquiry JF - Economic Inquiry Y1 - 1991/04// VL - 29 IS - 2 SP - 395 EP - 401 SN - 00952583 N1 - Accession Number: 0245001; Keywords: Public Goods; Publication Type: Journal Article; Update Code: 199109 KW - Economic Education and Teaching of Economics: Undergraduate A22 KW - Public Goods H41 L3 - http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291465-7295/issues UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0245001&site=ehost-live&scope=site UR - http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291465-7295/issues DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Alm, James AU - Beck, William AD - U CO AD - US Air Force Academy T1 - Wiping the Slate Clean: Individual Response to State Tax Amnesties JO - Southern Economic Journal JF - Southern Economic Journal Y1 - 1991/04// VL - 57 IS - 4 SP - 1043 EP - 1053 SN - 00384038 N1 - Accession Number: 0249598; Keywords: State Tax; Tax; Taxes; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 199112 N2 - This paper uses information from those states that have held an amnesty to estimate the impact of various amnesty features on taxes paid by individuals in the amnesty. The estimation results indicate that individuals respond systematically to the incentives of the amnesty. In particular, increases in postamnesty enforcement will encourage greater participation in the amnesty. States can utilize this information on individual responses in the design of an amnesty. A productive amnesty will allow past evaders to participate, reduce interest payments on back taxes, increase postamnesty criminal penalties on evasion, and increase funding for tax code enforcement. KW - State and Local Taxation, Subsidies, and Revenue H71 KW - Tax Evasion H26 L3 - http://journal.southerneconomic.org/loi/soec UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0249598&site=ehost-live&scope=site UR - http://journal.southerneconomic.org/loi/soec DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 1991-23020-001 AN - 1991-23020-001 AU - Aretz, Anthony J. T1 - The design of electronic map displays. JF - Human Factors JO - Human Factors JA - Hum Factors Y1 - 1991/02// VL - 33 IS - 1 SP - 85 EP - 101 CY - US PB - Human Factors & Ergonomics Society SN - 0018-7208 SN - 1547-8181 N1 - Accession Number: 1991-23020-001. Partial author list: First Author & Affiliation: Aretz, Anthony J.; US Air Force Academy, Colorado Springs, CO, US. Other Publishers: Sage Publications. Release Date: 19910801. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Maps; Graphical Displays; Learning; Stimulus Parameters; Topography. Minor Descriptor: Aircraft Pilots. Classification: Human Factors Engineering (4010); Learning & Memory (2343). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. Page Count: 17. Issue Publication Date: Feb, 1991. AB - An experiment with 18 male pilots compared a map display that employs the principle of visual momentum with the 2 traditional approaches, track-up and north-up. Data show that the advantage of a track-up alignment was its congruence with the ego-centered forward view; however, the inconsistency of the rotating display hindered development of a cognitive map. The stability of a north-up alignment aided the acquisition of a cognitive map, but there was a cost associated with the mental rotation of the display to a track-up alignment for tasks involving the ego-centered forward view. The visual momentum design captured the benefits and reduced the costs associated with the traditional approaches. Results support the conceptualization of navigational awareness as a cognitive coupling between the perceptual view of the world (the ego-centered reference frame) and a map display (the world-centered reference frame). (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - north up vs track up alignment in design of electronic map display KW - acquisition of cognitive map KW - male pilots KW - 1991 KW - Cognitive Maps KW - Graphical Displays KW - Learning KW - Stimulus Parameters KW - Topography KW - Aircraft Pilots KW - 1991 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1991-23020-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Huberman, Douglas A. AD - US Air Force Academy T1 - An Alternative to 'A Public Choice Theory of the Great Contraction.' JO - Public Choice JF - Public Choice Y1 - 1990/12// VL - 67 IS - 3 SP - 257 EP - 268 SN - 00485829 N1 - Accession Number: 0243312; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 199106 L3 - http://link.springer.com/journal/volumesAndIssues/11127 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0243312&site=ehost-live&scope=site UR - http://link.springer.com/journal/volumesAndIssues/11127 DP - EBSCOhost DB - ecn ER - TY - JOUR ID - 1992-11064-001 AN - 1992-11064-001 AU - Porter, David B. AU - Bird, Megan E. AU - Wunder, Arthur T1 - Competition, cooperation, satisfaction, and the performance of complex tasks among Air Force cadets. JF - Current Psychology: A Journal for Diverse Perspectives on Diverse Psychological Issues JO - Current Psychology: A Journal for Diverse Perspectives on Diverse Psychological Issues JA - Curr Psychol Y1 - 1990///Win 1990-1991 VL - 9 IS - 4 SP - 347 EP - 354 CY - US PB - Transaction Publishers SN - 1046-1310 SN - 1936-4733 N1 - Accession Number: 1992-11064-001. Other Journal Title: Current Psychological Research & Reviews. Partial author list: First Author & Affiliation: Porter, David B.; US Air Force Academy, CO, US. Other Publishers: Springer. Release Date: 19920301. Correction Date: 20101004. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Competition; Cooperation; Job Performance; Organizational Structure; Rewards. Classification: Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. Page Count: 8. Issue Publication Date: Win 1990-1991. AB - Studied 48 US Air Force Academy cadets (aged 18–21 yrs) to examine the effects of individual attitudes and organizational reward structures on the performance of a complex, integrative task. An attitudinal survey was used to measure each S's preference for cooperative or competitive situations. Distinctly different group environments were created by giving 4 groups of 6 Ss competitive instructions and another 4 groups cooperative instructions. The performance criterion was the sum score across 8 trials of a complex arcade-type computer game that required one S to control horizontal movement and another to control vertical movement. Although neither attitude nor reward structure alone influenced performance, their interaction was found to be very significant; Ss performed poorly when the reward structure did not match their individual orientation. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - preference for cooperation vs competition & organizational reward structure KW - performance of complex task KW - 18–21 yr old Air Force cadets KW - 1990 KW - Competition KW - Cooperation KW - Job Performance KW - Organizational Structure KW - Rewards KW - 1990 DO - 10.1007/BF02687191 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1992-11064-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Alm, James AU - Beck, William AD - U CO AD - US Air Force Academy T1 - Tax Amnesties and Tax Revenues JO - Public Finance Quarterly JF - Public Finance Quarterly Y1 - 1990/10// VL - 18 IS - 4 SP - 433 EP - 453 SN - 00485853 N1 - Accession Number: 0240178; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 199103 KW - National Taxation, Revenue, and Subsidies 3230 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0240178&site=ehost-live&scope=site DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Kuhl, S. A. AU - McCreary, R. P. AU - Bannan, J. D. AU - Friedman, R. L. T1 - Isolation and characterization of the recA gene of Bordetella pertussis. JO - Molecular Microbiology JF - Molecular Microbiology Y1 - 1990/07// VL - 4 IS - 7 M3 - Article SP - 1165 EP - 1172 PB - Wiley-Blackwell SN - 0950382X AB - This report describes the detection and cloning of the Bordetella pertussis recA gene. Escherichia coli clones having recombinant plasmids containing the B. pertussis recA gene were isolated by complementing an E. coli RecA- mutant's inability to survive in the presence of methylmethanesulphonate (MMS). This gene was shown to complement the deficiency of E. coli RecA- strains to tolerate the DNA-damaging effects of both a chemical agent and ultraviolet light (u.v.). Deletion mapping experiments localized the gene to a 2.5kb Stul-EcoRI fragment, and expression of the gene in E. coli resulted in the production of a 40kD protein. These data strongly suggest that a region of the B. pertussis chromosome that encodes RecA-like activity has been isolated and cloned. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Microbiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Escherichia coli KW - Bordetella pertussis KW - Genes KW - Plasmids KW - Bordetella N1 - Accession Number: 16142296; Kuhl, S. A. 1; McCreary, R. P. 1,2; Bannan, J. D. 1; Friedman, R. L. 1; Affiliations: 1: Department of Microbiology and Immunology, College of Medicine, University of Arizona, Tucson, Arizona 85724, USA; 2: Department of Biology, US Air Force Academy, USAFA/DFB, Colorado Springs, Colorado 80840, USA; Issue Info: Jul1990, Vol. 4 Issue 7, p1165; Thesaurus Term: Escherichia coli; Subject Term: Bordetella pertussis; Subject Term: Genes; Subject Term: Plasmids; Subject Term: Bordetella; Number of Pages: 8p; Illustrations: 2 Charts, 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=16142296&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 1990-23937-001 AN - 1990-23937-001 AU - Rottman, Theresa R. AU - Cross, David R. T1 - Using informed strategies for learning to enhance the reading and thinking skills of children with learning disabilities. JF - Journal of Learning Disabilities JO - Journal of Learning Disabilities JA - J Learn Disabil Y1 - 1990/05// VL - 23 IS - 5 SP - 270 EP - 278 CY - US PB - PRO-ED SN - 0022-2194 SN - 1538-4780 N1 - Accession Number: 1990-23937-001. PMID: 2341795 Partial author list: First Author & Affiliation: Rottman, Theresa R.; US Air Force Academy, CO, US. Other Publishers: Sage Publications. Release Date: 19900901. Correction Date: 20121001. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Elementary School Students; Learning Disabilities; Reading Achievement; Reading Education; Teaching Methods. Minor Descriptor: Strategies. Classification: Special & Remedial Education (3570). Population: Human (10). Age Group: Childhood (birth-12 yrs) (100); School Age (6-12 yrs) (180). Methodology: Empirical Study. Page Count: 9. Issue Publication Date: May, 1990. AB - Attempted to improve the reading performance of 18 3rd- and 4th-level children (aged 8–9 yrs) with learning disabilities, using a classroom-based metacognitive reading program. During pre- and posttesting participants were assessed on 2 measures of strategy awareness and a measure of perceived self-competence. During the instructional phase the metacognitive reading program was introduced. Ss were assessed on measures of reading performance throughout the study. Ss increased in performance and awareness of strategies from pre- to posttesting. In addition, Ss were placed in subgroups based on pretesting assessments. The subgroups differed on their improvements over time. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - classroom based metacognitive reading program KW - reading & thinking skills KW - 8–9 yr olds with learning disabilities KW - 1990 KW - Elementary School Students KW - Learning Disabilities KW - Reading Achievement KW - Reading Education KW - Teaching Methods KW - Strategies KW - 1990 DO - 10.1177/002221949002300505 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1990-23937-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Alm, James AU - McKee, Michael AU - Beck, William AD - U CO AD - U CO AD - United States Air Force Academy T1 - Amazing Grace: Tax Amnesties and Compliance JO - National Tax Journal JF - National Tax Journal Y1 - 1990/03// VL - 43 IS - 1 SP - 23 EP - 37 SN - 00280283 N1 - Accession Number: 0235491; Geographic Descriptors: U.S.; Geographic Region: Northern America; Publication Type: Journal Article; Update Code: 199012 N2 - Does a tax amnesty raise or lower compliance over time? This paper uses experimental methods to analyze the long-run impact of an amnesty. The results indicate that the average level of compliance falls after an amnesty. However, a well-designed amnesty may be able to overcome his decline. If postamnesty enforcement efforts increase, then aggregate compliance actually increases. In fact, postamnesty compliance is higher when an amnesty is accompanied by increased enforcement efforts than when enforcement increases without an amnesty. An amnesty may therefore be an effective tool for easing the transition to a tougher tax regime. KW - National Taxation, Revenue, and Subsidies 3230 L3 - http://ntj.tax.org UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ecn&AN=0235491&site=ehost-live&scope=site UR - http://ntj.tax.org DP - EBSCOhost DB - ecn ER - TY - JOUR AU - Estes, John H. AU - Moor, William C. AU - Rollier, Dwayne A. T1 - STOCHASTIC CASH FLOW EVALUATION UNDER CONDITIONS OF UNCERTAIN TIMING. JO - Engineering Costs & Production Economics JF - Engineering Costs & Production Economics Y1 - 1989/10// VL - 18 IS - 1 M3 - Article SP - 65 EP - 70 SN - 0167188X AB - This paper develops the mean and variance of present worth for lump-sum and series cash flows. The series cash flow model assumes a finite time horizon. The use of these calculations will enable both a realistic computation of expected present worth and also allow the analyst to calculate a variance expression for use in probabilistic investment analyses. [ABSTRACT FROM AUTHOR] AB - Copyright of Engineering Costs & Production Economics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CASH flow KW - PRESENT value KW - PROBABILITY theory KW - ANALYSIS of variance KW - INVESTMENT analysis KW - MATHEMATICAL statistics N1 - Accession Number: 14907654; Estes, John H. 1; Moor, William C. 2; Rollier, Dwayne A. 2; Affiliations: 1: United States Air Force, Wright-Patterson Air Force Base, OH 45433 (U.S.A.).; 2: Arizona State University, AZ (U.S.A.).; Issue Info: 1989, Vol. 18 Issue 1, p65; Thesaurus Term: CASH flow; Thesaurus Term: PRESENT value; Thesaurus Term: PROBABILITY theory; Thesaurus Term: ANALYSIS of variance; Thesaurus Term: INVESTMENT analysis; Thesaurus Term: MATHEMATICAL statistics; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=14907654&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Robertson, Joan T1 - They're After Everyone: Heller's Catch-22 and the Cold War. JO - Clio JF - Clio Y1 - 1989///Fall89 VL - 19 IS - 1 M3 - Article SP - 41 EP - 50 SN - 08842043 AB - The unifying thread in Joseph Heller's 'Catch-22' (1962) is the fictional satirization of Cold War paranoia of the McCarthy era. Episodes in the novel reflect the political climate in the United States after World War II. KW - COLD War, 1945-1989 KW - WORLD politics -- 1945-1989 KW - SATIRE KW - ANTI-communist movements KW - Heller, Joseph '(Catch-22).' KW - HELLER, Joseph, 1923-1999 KW - ANDERSON, Don KW - CATCH-22 (Book : Heller) KW - IMPERIAL America (Book) N1 - Accession Number: 32648614; Robertson, Joan 1; Affiliations: 1 : United States Air Force Academy, Colorado Springs, Colorado; Source Info: Fall89, Vol. 19 Issue 1, p41; Note: 25 notes.; Historical Period: 1950 to 1962; Subject Term: COLD War, 1945-1989; Subject Term: WORLD politics -- 1945-1989; Subject Term: SATIRE; Subject Term: ANTI-communist movements; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ahl&AN=32648614&site=ehost-live&scope=site DP - EBSCOhost DB - ahl ER - TY - JOUR TY - GEN AU - Brier, K. L.; AU - Buth, J. A.; T1 - ESTABLISHING QUALITY ASSURANCE THROUGH FACILITY DESIGN CT - ESTABLISHING QUALITY ASSURANCE THROUGH FACILITY DESIGN JO - ASHP Midyear Clinical Meeting JF - ASHP Midyear Clinical Meeting Y1 - 1988/12/01/ VL - 23 IS - Dec SP - MCS EP - S-3 AD - USAFA Hospital, US Air Force Academy, Colorado Springs, CO 80840 N1 - Accession Number: 26-03066; Language: English; Publication Type: Abstract of Meeting Presentation; Section Heading: Institutional Pharmacy Practice N2 - Organized health care has been shifting resources to ambulatory care. This shift has been caused by pressures to contain costs, especially in inpatient services. The result has been a substantial increase in demand for ambulatory pharmacy services with emphasis on quality assurance. This case illustrates a step-wise approach to assess current and future needs for pharmacy services, to analyze existing capabilities for pharmacy services, and to design a facility to deliver these services. An alternative to inpatient hospital care has been ambulatory clinic care. Not only has this been for acute patient needs, but also for minor surgery, diagnostic procedures, and preventative medical care. This shift has caused rapid growth in the demand for outpatient pharmacy services. In our hospital the outpatient pharmacy workload now exceeds 30,000 prescriptions monthly, and has been growing 10-12% annually. This high volume of ambulatory dispensing required an orderly flow of work to keep services accessible, timely, and within quality standards of professional review. Thus, an internal audit of all facets of pharmacy services was performed. This audit included staffing, facilities, and workflow patterns. The audit revealed that quality standards could be maintained for the next 2-3 years, but a total renovation was necessary beyond that point. Since construction projects are long-term projects, design and planning had to begin immediately. The pharmacy construction project was incorporated into the hospital's master plan. The pharmacy design has been completed and bids have been solicited from contractors. Benefits in quality will accrue from careful planning of facility design. KW - Ambulatory care--planning and design--needs, facilities; KW - Planning and design--ambulatory care--needs, facilities; KW - Pharmacy services--ambulatory care--needs, services; KW - ASHP meeting abstracts--ambulatory care planning and design; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ipa&AN=26-03066&site=ehost-live&scope=site DP - EBSCOhost DB - ipa ER - TY - GEN AU - Degi, Bruce J. T1 - Paul Scott's Indian National Army: The Mark of the Warrior and The Raj Quartet. JO - Clio JF - Clio Y1 - 1988///Fall88 VL - 18 IS - 1 M3 - Literary Criticism SP - 41 EP - 54 SN - 08842043 AB - The Indian National Army (INA) was a factor in the independence movement after the war. It had been formed after the provisional government had emerged and was viewed by many as a legitimate force dedicated to the liberation of India. Many saw its members as heroic nationalists, while others, including Paul Scott, viewed them as cowardly traitors. His British perspective on loyalty and the INA colored his perception of India's postwar situation. KW - CRITICISM KW - IMPERIALISM in literature KW - INDIA KW - Scott, Paul '(Raj Quartet).' KW - SCOTT, Paul, 1920-1978 KW - MARK of the Warrior, The (Book) KW - RAJ Quartet, The (Book) N1 - Accession Number: 32648071; Degi, Bruce J. 1; Affiliations: 1 : United States Air Force Academy, Colorado Springs, Colorado; Source Info: Fall88, Vol. 18 Issue 1, p41; Note: Secondary sources; 32 notes.; Historical Period: 1940 to 1950; Subject Term: CRITICISM; Subject Term: IMPERIALISM in literature; Subject: INDIA; Number of Pages: 14p; Document Type: Literary Criticism UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hia&AN=32648071&site=ehost-live&scope=site DP - EBSCOhost DB - hia ER - TY - JOUR ID - 1988-32715-001 AN - 1988-32715-001 AU - Wetzler, Harry P. AU - Ursano, Robert J. T1 - A positive association between physical health practices and psychological well-being. JF - Journal of Nervous and Mental Disease JO - Journal of Nervous and Mental Disease JA - J Nerv Ment Dis Y1 - 1988/05// VL - 176 IS - 5 SP - 280 EP - 283 CY - US PB - Lippincott Williams & Wilkins SN - 0022-3018 SN - 1539-736X N1 - Accession Number: 1988-32715-001. PMID: 3259260 Partial author list: First Author & Affiliation: Wetzler, Harry P.; US Air Force Academy, Dept of Defense Medical Examination Review Board, Colorado Springs, CO, US. Release Date: 19881101. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Health Behavior; Mental Health; Physical Health. Classification: Personality Traits & Processes (3120); Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. Page Count: 4. Issue Publication Date: May, 1988. AB - Investigated the relationship between psychological well-being (PWB) and 7 physical health practices (sleep, physical exercise, breakfast, snacking, relative body weight, smoking, and alcohol consumption). Data were obtained from a cross-sectional health survey of 6,320 active duty Air Force personnel. PWB was measured as an overall score, with positive and negative feelings as subscores. PWB measures were related to favorable health practices, and was noted to improve with age. It is suggested that physical health practices may be important mediators of the mind–body interaction. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - psychological well being & physical health practices KW - Air Force personnel KW - 1988 KW - Air Force Personnel KW - Health Behavior KW - Mental Health KW - Physical Health KW - 1988 DO - 10.1097/00005053-198805000-00005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1988-32715-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2002-10378-002 AN - 2002-10378-002 AU - Snowden, Lonnie R. AU - Schott, Tracy L. AU - Awalt, Suzanne J. AU - Gillis-Knox, Jo T1 - Marital satisfaction in pregnancy: Stability and change. JF - Journal of Marriage and the Family JO - Journal of Marriage and the Family JA - J Marriage Fam Y1 - 1988/05// VL - 50 IS - 2 SP - 325 EP - 333 CY - US PB - National Council on Family Relations SN - 0022-2445 N1 - Accession Number: 2002-10378-002. Other Journal Title: Journal of Marriage and Family; Living; Marriage and Family Living. Partial author list: First Author & Affiliation: Snowden, Lonnie R.; U California, Berkeley, Berkeley, CA, US. Other Publishers: Wiley-Blackwell Publishing Ltd. Release Date: 20020327. Correction Date: 20120326. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Coping Behavior; Decision Making; Marital Satisfaction; Pregnancy; Wives. Minor Descriptor: Demographic Characteristics; Health; Hospitalization. Classification: Marriage & Family (2950). Population: Human (10); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. References Available: Y. Page Count: 9. Issue Publication Date: May, 1988. AB - Marital satisfaction was studied in a sample of 106 women (average age 24.66 yrs) recruited at a military medical center and evaluated both early and late in pregnancy. An explanatory model was evaluated with regard to: (a) sociodemographic factors; (b) coping resources (self-confidence, previous children, religious participation); and (c) pregnancy decision-making (wantedness, intendedness, and spousal disagreement). Two medical indicators, hospitalization and general health, were considered as potential consequences of marital dissatisfaction. Results indicate that with sociodemographic variables controlled, coping resources and pregnancy decision-making were related to marital satisfaction both early and late in the pregnancy. At the same time, marital satisfaction itself remained consistent, both for individuals and for the group. Insofar as marital satisfaction of individuals changed, it was associated with 2 experiences: (a) 1st time parenthood; and (b) participation in religious activities. Marital satisfaction late in pregnancy was related to hospitalization and general perception of health, such that declining marital satisfaction was linked to health status. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - marital satisfaction KW - pregnancy KW - early in pregnancy KW - late in pregnancy KW - sociodemographic factors KW - coping resources KW - pregnancy decision making KW - hospitalization KW - general health KW - 1988 KW - Coping Behavior KW - Decision Making KW - Marital Satisfaction KW - Pregnancy KW - Wives KW - Demographic Characteristics KW - Health KW - Hospitalization KW - 1988 DO - 10.2307/352000 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2002-10378-002&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Rogers, Kenneth A. T1 - The Rise and Fall of Détente. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 1987///Spring87 VL - 13 IS - 3 M3 - Book Review SP - 471 EP - 473 SN - 0095327X AB - The article reviews the book "The Rise and Fall of Detente," by Richard W. Stevenson. KW - DETENTE KW - NONFICTION KW - STEVENSON, Richard W. KW - RISE & Fall of Detente, The (Book) N1 - Accession Number: 32506664; Rogers, Kenneth A. 1; Affiliations: 1 : United States Air Force Academy; Source Info: Spring87, Vol. 13 Issue 3, p471; Subject Term: DETENTE; Subject Term: NONFICTION; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=24h&AN=32506664&site=ehost-live&scope=site DP - EBSCOhost DB - 24h ER - TY - JOUR ID - 2006-06431-024 AN - 2006-06431-024 AU - Klepac, Robert K. T1 - The Other Half of Treatment. JF - Contemporary Psychology: APA Review of Books JO - Contemporary Psychology: APA Review of Books Y1 - 1986/12// VL - 31 IS - 12 SP - 969 EP - 970 CY - US PB - American Psychological Association SN - 0010-7549 N1 - Accession Number: 2006-06431-024. Other Journal Title: PsycCRITIQUES. Partial author list: First Author & Affiliation: Klepac, Robert K.; Wilford Hall United States Air Force Medical Center, San Antonio, TX, US. Release Date: 20061127. Publication Type: Electronic Collection (0500). Format Covered: Electronic. Document Type: Review-Book. Language: English. Major Descriptor: Immunization; Psychiatric Training; Stress Reactions; Training; Treatment. Minor Descriptor: Clinical Psychology; Stress Management. Classification: Professional Education & Training (3410). Population: Human (10). Reviewed Item: Meichenbaum, Donald. Stress Inoculation Training=Oxford, England: Pergamon Press, 1985. 126 pp. $17.50 hardcover, $9.95 paperback; 1985. Page Count: 2. Issue Publication Date: Dec, 1986. KW - stress reactions KW - clinical guidebook KW - stress inoculation training KW - treatment effects KW - 1986 KW - Immunization KW - Psychiatric Training KW - Stress Reactions KW - Training KW - Treatment KW - Clinical Psychology KW - Stress Management U2 - Meichenbaum, Donald. (1985); Stress Inoculation Training; Oxford, England: Pergamon Press, 1985. 126 pp. $17.50 hardcover, $9.95 paperback DO - 10.1037/024331 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=pvh&AN=2006-06431-024&site=ehost-live&scope=site DP - EBSCOhost DB - pvh ER - TY - JOUR ID - 1986-21098-001 AN - 1986-21098-001 AU - Leber, Leray L. AU - Roscoe, Stanley N. AU - Southward, G. Morris T1 - Mild hypoxia and visual performance with night vision goggles. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 1986/04// VL - 57 IS - 4 SP - 318 EP - 324 CY - US PB - Aerospace Medical Assn SN - 0095-6562 N1 - Accession Number: 1986-21098-001. PMID: 3964160 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Leber, Leray L.; US Air Force Academy. Release Date: 19860901. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Anoxia; Monocular Vision; Optical Aids. Minor Descriptor: Air Force Personnel; Aircraft Pilots. Classification: Visual Perception (2323); Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. Page Count: 7. Issue Publication Date: Apr, 1986. AB - A study of the effects of mild hypoxia on monocular visual performance of 4 male US Air Force pilots with night vision goggles (NVGs) revealed that mild oxygen deprivation significantly affected unaided square-wave grating visual acuity but did not significantly affect NVG-augmented performance. Large differences between visual sensitivities at different spatial frequencies were not differentially affected by mild hypoxia. Supplemental oxygen did significantly improve naked-eye but not NVG-augmented night resolution acuity up to a simulated altitude of 3,962 m above sea level. (16 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - mild hypoxia KW - monocular visual performance with vs without night vision goggles KW - Air Force pilots KW - 1986 KW - Anoxia KW - Monocular Vision KW - Optical Aids KW - Air Force Personnel KW - Aircraft Pilots KW - 1986 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1986-21098-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - GEN AU - Gabriel, Charles A. T1 - JO - Vital Speeches of the Day JF - Vital Speeches of the Day J1 - Vital Speeches of the Day PY - 1986/02//2/1/86 Y1 - 1986/02//2/1/86 VL - 52 IS - 8 M3 - Speech SP - 226 EP - 229 PB - Pro Rhetoric, LLC SN - 0042742X AB - Presents a speech by Charles A. Gabriel, a U. S. Air Force general, delivered to the International Club of Washington, D.C. on December 19, 1985. Importance of military-to-military relationships; Information on the Collocated Operating Base program; Significance of U.S. relations with Latin American nations. KW - GABRIEL, Charles A. KW - MILITARY policy KW - LATIN America -- Foreign relations -- United States KW - UNITED States N1 - Accession Number: 8600013514; Source Information: 2/1/86, Vol. 52 Issue 8, p226; Subject Term: GABRIEL, Charles A.; Subject Term: MILITARY policy; Subject Term: LATIN America -- Foreign relations -- United States; Subject Term: ; Geographic Subject: UNITED States; Geographic Subject: ; Number of Pages: 4p; ; Document Type: Speech; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=8600013514&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR ID - 1986-26590-001 AN - 1986-26590-001 AU - Matthews, Michael D. AU - Babb, Harold T1 - Self-punitive behavior: Effects of percentage of shocked acquisition trials and percentage of goal-shocked extinction trials. JF - The Psychological Record JO - The Psychological Record JA - Psychol Rec Y1 - 1985///Fal 1985 VL - 35 IS - 4 SP - 535 EP - 547 CY - US PB - Kenyon Coll Psychology Dept SN - 0033-2933 SN - 2163-3452 N1 - Accession Number: 1986-26590-001. Partial author list: First Author & Affiliation: Matthews, Michael D.; US Air Force Academy. Other Publishers: Southern Illinois University; Springer. Release Date: 19861101. Correction Date: 20141103. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Escape Conditioning; Extinction (Learning); Punishment; Shock. Minor Descriptor: Rats; Self-Destructive Behavior; Theory Verification. Classification: Electrophysiology (2530). Population: Animal (20). Page Count: 13. Issue Publication Date: Fal 1985. AB - Trained 48 female Sprague-Dawley rats to escape shock in a runway, with shock present on each acquisition trial for half the Ss and on 50% of trials for the other Ss. During extinction, Ss were punished in the goalbox on 0, 10, 50, or 100% of the trials. Results indicate little effect of percentage of shocked acquisition trials on either acquisition or extinction performance. Percentage of punished extinction trials did affect extinction performance, with suppression of response measures (relative to nonpunished controls) found in Ss punished on 50 or 100% of the extinction trials and facilitation for Ss punished on 10% of the trials. Results are inconsistent with either 2-factor or discrimination theories of self-punitive behavior and consistent with a stimulus-directive interpretation of this phenomenon. (21 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - percentage of shocked acquisition & goal-punished extinction trials KW - extinction of escape conditioning KW - rats KW - support for stimulus-directive interpretation of self punitive behavior KW - 1985 KW - Escape Conditioning KW - Extinction (Learning) KW - Punishment KW - Shock KW - Rats KW - Self-Destructive Behavior KW - Theory Verification KW - 1985 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1986-26590-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - GEN AU - Tartasky, Donald J. AU - Katz, Rose K. AU - Marshall, Doris B. AU - Romanowski, Sonja B. AU - Stewart, Nyla F. AU - Monroe, Cheryl AU - Alcabes, Abraham T1 - Letters. JO - Social Work JF - Social Work Y1 - 1985/05//May/Jun85 VL - 30 IS - 3 M3 - Letter SP - 285 EP - 288 PB - Oxford University Press / USA SN - 00378046 AB - Presents letters to the editor. Role of the adoption process to achieving pregnancy; Determinants of clienthood in social service. KW - LETTERS to the editor KW - PREGNANCY KW - ADOPTION KW - SOCIAL services KW - CLIENT characteristics KW - MEDICAL care N1 - Accession Number: 5275469; Tartasky, Donald J. 1; Katz, Rose K.; Marshall, Doris B.; Romanowski, Sonja B.; Stewart, Nyla F.; Monroe, Cheryl 2; Alcabes, Abraham 3; Source Information: May/Jun85, Vol. 30 Issue 3, p285; Subject: LETTERS to the editor; Subject: PREGNANCY; Subject: ADOPTION; Subject: SOCIAL services; Subject: CLIENT characteristics; Subject: MEDICAL care; Number of Pages: 4p; Document Type: Letter UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=5275469&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR AU - Rue, Robert C. AU - Rosenshine, Matthew T1 - The Application of Semi-Marvok Decision Processes to Queueing of Aircraft for Landing at an Airport. JO - Transportation Science JF - Transportation Science Y1 - 1985/05// VL - 19 IS - 2 M3 - Article SP - 154 PB - INFORMS: Institute for Operations Research SN - 00411655 AB - Socially optimal control of access to the landing queue of an airport is investigated in this paper. Semi-Markov decision proc- ess models, M/M/1 and M/Ek/1, for several classes of customers are used to determine how access should be controlled. Only commercial jet aircraft are considered and they are divided up into five classes based on aircraft type. Data from the Greater Pittsburgh International Airport are used to determine the parameters of the service time distribution. Data from several published sources are used to develop the cost, reward, and arrival rate parameters for each of the classes. Results are developed and presented for both models. [ABSTRACT FROM AUTHOR] AB - Copyright of Transportation Science is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DECISION making KW - MARKOV processes KW - COMMERCIAL aeronautics KW - INTERNATIONAL airports KW - AIRPORTS KW - LANDING of airplanes KW - LANDING aids (Aeronautics) N1 - Accession Number: 4474900; Rue, Robert C. 1; Rosenshine, Matthew 2; Affiliations: 1: United States Air Force Academy, Colorado Springs, Colorado.; 2: Pennsylvania State University, University Park, Pennsylvania.; Issue Info: May85, Vol. 19 Issue 2, p154; Thesaurus Term: DECISION making; Thesaurus Term: MARKOV processes; Thesaurus Term: COMMERCIAL aeronautics; Thesaurus Term: INTERNATIONAL airports; Thesaurus Term: AIRPORTS; Subject Term: LANDING of airplanes; Subject Term: LANDING aids (Aeronautics); NAICS/Industry Codes: 481215 Non-scheduled specialty flying services; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 481111 Scheduled Passenger Air Transportation; NAICS/Industry Codes: 481112 Scheduled Freight Air Transportation; NAICS/Industry Codes: 481110 Scheduled air transportation; NAICS/Industry Codes: 488119 Other Airport Operations; Number of Pages: 19p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=4474900&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 1986-03089-001 AN - 1986-03089-001 AU - Matthews, Michael D. AU - Chapman, B. Robert AU - Boyd, Stephen P. T1 - Behavioral effects of response-independent termination of aversive stimulation. JF - Psychological Reports JO - Psychological Reports JA - Psychol Rep Y1 - 1985/04// VL - 56 IS - 2 SP - 655 EP - 661 CY - US PB - Psychological Reports SN - 0033-2941 SN - 1558-691X N1 - Accession Number: 1986-03089-001. Partial author list: First Author & Affiliation: Matthews, Michael D.; US Air Force Academy, CO. Other Publishers: Sage Publications. Release Date: 19860201. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aversive Stimulation; Reinforcement. Minor Descriptor: Behavior; Rats; Stimulus Offset. Classification: Learning & Motivation (2420). Population: Animal (20). Page Count: 7. Issue Publication Date: Apr, 1985. AB - Examined the effects of noncontingent termination of aversive stimulation on the development and organization of behavior in 6 Sprague-Dawley rats. Ss were removed from cold water independent of their behavior, and changes in their behavior (e.g., clawing, bracing, floating, swimming) when replaced in the cold water were observed. Contrary to a classic interpretation of the effects of noncontingent reinforcement as 'superstition,' stable and predictable patterns of behavior developed. Results are interpreted as supporting the view that reinforcers do not act arbitrarily on behavior but that their effects are instead closely related to the motivational state of an organism and its surrounding stimulus conditions. Results also extend the known effects of response-independent reinforcement from appetitively motivated behaviors to aversively motivated behaviors. (15 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - noncontingent termination of aversive stimulation KW - development & organization of behavior KW - rats KW - 1985 KW - Aversive Stimulation KW - Reinforcement KW - Behavior KW - Rats KW - Stimulus Offset KW - 1985 DO - 10.2466/pr0.1985.56.2.655 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1986-03089-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Ovalle II, Nestor K. T1 - Organizational/ Managerial Control Processes: A Reconceptualization of the Linkage between Technology and Performance. JO - Human Relations JF - Human Relations Y1 - 1984/12// VL - 37 IS - 12 M3 - Article SP - 1047 EP - 1062 SN - 00187267 AB - Literature pertaining to the definition and delineation of managerial control is reviewed. In addition, literature positing a potential link between technology and the process of control is assessed. It is evident that there is wide variability in how managerial control has been defined and delineated; however, it appears that there is common agreement on several key underlying components. There is also evidence that control may be an important link between technology and behavior/performance. A conceptual framework for this linkage is presented and discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Relations is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXECUTIVES KW - JOB performance KW - ORGANIZATIONAL sociology KW - ORGANIZATIONAL structure KW - BUSINESS literature N1 - Accession Number: 4963637; Ovalle II, Nestor K. 1; Affiliations: 1: Air Training Command, United States Air Force; Issue Info: Dec84, Vol. 37 Issue 12, p1047; Thesaurus Term: EXECUTIVES; Thesaurus Term: JOB performance; Thesaurus Term: ORGANIZATIONAL sociology; Thesaurus Term: ORGANIZATIONAL structure; Thesaurus Term: BUSINESS literature; Number of Pages: 16p; Illustrations: 1 Diagram; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=4963637&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 1985-02395-001 AN - 1985-02395-001 AU - Hughes, Richard L. T1 - Teaching concepts of personal adjustment using popular music. JF - Teaching of Psychology JO - Teaching of Psychology JA - Teach Psychol Y1 - 1984/04// VL - 11 IS - 2 SP - 115 EP - 115 CY - US PB - Lawrence Erlbaum SN - 0098-6283 SN - 1532-8023 N1 - Accession Number: 1985-02395-001. Partial author list: First Author & Affiliation: Hughes, Richard L.; US Air Force Academy. Other Publishers: Sage Publications; Taylor & Francis. Release Date: 19850101. Correction Date: 20111003. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Music; Personality Theory; Psychology Education; Teaching Methods. Classification: Curriculum & Programs & Teaching Methods (3530). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. Page Count: 1. Issue Publication Date: Apr, 1984. AB - Describes the use of popular music to help students learn about the psychology of personality. Songs on a variety of topics, including self-identity, self-acceptance, social roles, values, spontaneity, and commitment, are played and then discussed by students. The method appears to increase students' self-disclosure of their views on these topics. (1 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - popular music KW - learning about psychology of personality KW - college students KW - 1984 KW - Music KW - Personality Theory KW - Psychology Education KW - Teaching Methods KW - 1984 DO - 10.1207/s15328023top1102_20 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1985-02395-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR TY - GEN AU - Johnson, J. M.; T1 - Psychiatric uses of antiadrenergic and adrenergic blocking drugs CT - Psychiatric uses of antiadrenergic and adrenergic blocking drugs JO - J. Nerv. Ment. Dis. JF - J. Nerv. Ment. Dis. Y1 - 1984/03/01/ VL - 172 IS - Mar SP - 123 EP - 132 AD - Dept. of Psychiatry, Wilford Hall, United States Air Force Med. Ctr., San Antonio, TX 78236 N1 - Accession Number: 22-04024; Language: English; Chemical Name: Reserpine--50-55-5 Methyldopa--41372-08-1 Clonidine--4205-90-7 Propranolol--525-66-6; Therapeutic Class: (12:16); AHFS Class: Sympatholytic agents reserpine (12:16); AHFS Class: Sympatholytic agents propranolol (12:12); AHFS Class: Sympathomimetic agents methyldopa (12:12); AHFS Class: Sympathomimetic agents clonidine; References: 111; Journal Coden: JNMDAN; Section Heading: Pharmacology; Abstract Author: William T. Sawyer N2 - A review of the literature describing the psychiatric uses of 4 agents affecting the adrenergic nervous system is presented. The pharmacology of reserpine, an alpha-adrenergic depleter, methyldopa, and clonidine, central adrenergic presynaptic agonists (alpha-2 agonists), and propranolol, an adrenergic beta-receptor blocker is reviewed and the efficacy of each drug in selected psychiatric disorders is discussed from the perspective of published data prescribing efficacy and side effects. KW - Reserpine--mental disorders-; KW - Methyldopa--mental disorders-; KW - Clonidine--mental disorders-; KW - Propranolol--mental disorders-; KW - Toxicity--sympatholytic agents; KW - Toxicity--sympathomimetic agents; KW - Mental disorders--therapy; KW - Sympatholytic agents--reserpine--mental disorder therapy; KW - Sympatholytic agents--propranolol--mental disorder therapy; KW - Sympathomimetic agents--methyldopa--mental disorder therapy; KW - Sympathomimetic agents--clonidine--mental disorder therapy; KW - Mechanism of action--sympatholytic agents--mental disorder therapy; KW - Mechanism of action--sympathomimetic agents--mental disorder therapy; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ipa&AN=22-04024&site=ehost-live&scope=site DP - EBSCOhost DB - ipa ER - TY - JOUR TY - GEN AU - Strickland, D. M.; AU - Leonard, R. G.; AU - Stavchansky, S.; AU - Benoit, T.; AU - Wilson, R. T.; T1 - Vaginal absorption of hexachlorophene during labor CT - Vaginal absorption of hexachlorophene during labor JO - American Journal of Obstetrics and Gynecology (USA) JF - American Journal of Obstetrics and Gynecology (USA) Y1 - 1983/12/01/ VL - 147 IS - Dec 1 SP - 769 EP - 772 SN - 00029378 AD - Wilford Hall United States Air Force Med. Ctr., SGHPG, Lackland Air Force Base, TX 78236 N1 - Accession Number: 22-01302; Language: English; Trade Name: pHisoHex; Generic Name: Hexachlorophene; Chemical Name: Hexachlorophene--70-30-4; Therapeutic Class: (38:00); AHFS Class: Disinfectants hexachlorophene; References: 12; Journal Coden: AJOGAH; Human Indicator: Yes; Section Heading: Drug Metabolism and Body Distribution; Toxicity; Abstract Author: D. L. Thompson N2 - Hexachlorophene (I) blood levels were determined in 28 women whose vaginal examinations were lubricated with pHisoHex during labor. The serum of 12 women had detectable levels of I, with a high of 942 ng/ml. Cord serum had detectable levels in 9 neonates, with a high level of 617 ng/ml. It was concluded that I from vaginal lubricants was variably absorbed from the vaginal mucosa, and that appreciable amounts can be detected in maternal and cord serum. It was recommended that alternate lubricants for pelvic examinations be used during labor. KW - Hexachlorophene--placental transfer-; KW - Disinfectants--hexachlorophene--placental transfer; KW - Placental transfer--hexachlorophene; KW - Lubricants--hexachlorophene--vaginal, placental transfer; KW - Toxicity--hexachlorophene--placental transfer; KW - Absorption--hexachlorophene--and placental transfer; KW - Blood levels--hexachlorophene--maternal and fetus; KW - Labor--hexachlorophene--placental transfer from vaginal lubricants; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ipa&AN=22-01302&site=ehost-live&scope=site DP - EBSCOhost DB - ipa ER - TY - JOUR AU - Gourdin, Kent N. T1 - International Aviation Policy and Strategic Airlift: A Critical Appraisal. JO - Transportation Journal (American Society of Transportation & Logistics Inc) JF - Transportation Journal (American Society of Transportation & Logistics Inc) Y1 - 1983///Winter1983 VL - 23 IS - 2 M3 - Article SP - 20 EP - 27 PB - American Society of Transportation & Logistics Inc SN - 00411612 AB - The international commercial aviation industry in the United States is experiencing the most dramatic upheaval in its history. Deregulation changed all the rules; the resultant increase in competitive pressures at home and abroad, combined with rising operating costs and a depressed domestic economy, has brought many airlines to the blink of insolvency. The implication is that, by doing the first, the second will be accomplished. The present condition of both our strategic military airlift system and the international aviation community shows that the best results of that policy have been less than optimum. What is in the best interests of the latter today is no longer supportive of the former. Two key points are critical to the following discussion. First, the vast majority of foreign international air carriers are owned totally, or in part, by their respective governments. British Airways, for instance, is still wholly owned and controlled by the British government,'' while the German government owns 75 percent of the stock in Lufthansa.' Second, exchange of flight services between any two nations must be agreed upon in advance by both, with the result being a minimum of two airlines, one from each country, flying a route when there may not be enough traffic to support them both. KW - Transportation industry KW - Commercial aeronautics KW - Industrial policy KW - Trade regulation KW - Airplanes KW - United States N1 - Accession Number: 14268671; Gourdin, Kent N. 1; Affiliations: 1: Captain in the United States Air Force, Powell, Tennessee 37849.; Issue Info: Winter1983, Vol. 23 Issue 2, p20; Thesaurus Term: Transportation industry; Subject Term: Commercial aeronautics; Subject Term: Industrial policy; Subject Term: Trade regulation; Subject Term: Airplanes; Subject: United States; NAICS/Industry Codes: 481112 Scheduled Freight Air Transportation; NAICS/Industry Codes: 481215 Non-scheduled specialty flying services; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 481111 Scheduled Passenger Air Transportation; NAICS/Industry Codes: 481110 Scheduled air transportation; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 926110 Administration of General Economic Programs; NAICS/Industry Codes: 488999 All Other Support Activities for Transportation; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=14268671&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR ID - 1983-31359-001 AN - 1983-31359-001 AU - Hughes, Richard L. AU - Rosenbach, William E. AU - Clover, William H. T1 - Team development in an intact, ongoing work group: A quasi-field experiment. JF - Group & Organization Studies JO - Group & Organization Studies Y1 - 1983/06// VL - 8 IS - 2 SP - 161 EP - 186 CY - US PB - Sage Publications N1 - Accession Number: 1983-31359-001. Other Journal Title: Group & Organization Management. Partial author list: First Author & Affiliation: Hughes, Richard L.; US Air Force Academy. Release Date: 19831101. Correction Date: 20121008. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Group Cohesion; Group Performance; Human Relations Training; Interpersonal Interaction. Minor Descriptor: Followup Studies. Classification: Personnel Management & Selection & Training (3620); Military Psychology (3800). Population: Human (10). Methodology: Empirical Study; Followup Study. Page Count: 26. Issue Publication Date: Jun, 1983. AB - Implemented a team development intervention with a cadet squadron at the US Air Force Academy. Four squadrons completed the Squadron Assessment Questionnaire, which measures 9 dimensions of squadron climate: interpersonal trust, relationships among classes, squadron cohesiveness, job clarity, confidence in cadet leadership, commitment to squadron goals, rewards, satisfaction with squadrons, and satisfaction with the academy. The team-building intervention took place at a remote private lodge in the mountains. A 6-mo follow-up involving comparisons with an equivalent control squadron indicated that the intervention positively influenced both climate and performance variables in the target organization. Current skepticism about the utility of process interventions for effecting lasting improvement in organizational effectiveness is discussed. (31 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - team development intervention KW - squadron climate & performance KW - US Air Force Academy cadets KW - 6-mo followup KW - 1983 KW - Air Force Personnel KW - Group Cohesion KW - Group Performance KW - Human Relations Training KW - Interpersonal Interaction KW - Followup Studies KW - 1983 DO - 10.1177/105960118300800205 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1983-31359-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 1984-10583-001 AN - 1984-10583-001 AU - Rosenbach, William E. AU - Gregory, Robert A. AU - Taylor, Robert L. T1 - Survey feedback as an organization development strategy in a public school district. JF - Education JO - Education Y1 - 1983///Sum 1983 VL - 103 IS - 4 SP - 316 EP - 325 CY - US PB - Project Innovation SN - 0013-1172 N1 - Accession Number: 1984-10583-001. Partial author list: First Author & Affiliation: Rosenbach, William E.; US Air Force Academy. Release Date: 19840401. Publication Type: Journal (0100), Peer-Reviewed Status-Unknown (0130). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Educational Administration; Job Satisfaction; Organizational Development; School Environment; Teachers. Minor Descriptor: Motivation; School Administrators. Classification: Educational Administration & Personnel (3510). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. Page Count: 10. Issue Publication Date: Sum 1983. AB - Survey data were gathered from 290 school teachers, administrators, and support staff regarding demographic variables; general job satisfaction and perceived productivity; factors influenced most by administration, such as psychological climate and social satisfaction; and the motivating potential of the job, as related to variables such as skill variety, autonomy, and feedback. Data are discussed in terms of differences among the 8 schools examined, correlations among the variables studied, and the use of survey feedback in making strategic decisions. (10 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - survey of school administrators & climate & job satisfaction & motivation KW - basis for organization development strategy in public school district KW - school teachers & administrators & support staff KW - 1983 KW - Educational Administration KW - Job Satisfaction KW - Organizational Development KW - School Environment KW - Teachers KW - Motivation KW - School Administrators KW - 1983 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1984-10583-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 1984-03390-001 AN - 1984-03390-001 AU - Mickley, G. Andrew AU - Stevens, Karen E. AU - White, Gerald A. AU - Gibbs, Gregory L. T1 - Endogenous opiates mediate radiogenic behavioral change. JF - Science JO - Science JA - Science Y1 - 1983/06// VL - 220 IS - 4602 SP - 1185 EP - 1187 CY - US PB - American Assn for the Advancement of Science SN - 0036-8075 N1 - Accession Number: 1984-03390-001. PMID: 6857244 Partial author list: First Author & Affiliation: Mickley, G. Andrew; US Air Force Academy. Release Date: 19840201. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Hyperkinesis; Naloxone; Radiation. Minor Descriptor: Mice. Classification: Physiological Psychology & Neuroscience (2500). Population: Animal (20). Page Count: 3. Issue Publication Date: Jun, 1983. AB - Exposure of male C57BL/6J mice to ionizing radiation caused stereotypical locomotor hyperactivity similar to that produced by morphine. Naloxone (2 mg/kg, ip) administration prevented this radiation-induced behavioral activation. Results support the hypothesis that endorphins are involved in some aspects of radiogenic behavioral change. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - naloxone KW - attenuation of radiation-induced stereotypical locomotor hyperactivity KW - C57BL/6J mice KW - 1983 KW - Hyperkinesis KW - Naloxone KW - Radiation KW - Mice KW - 1983 DO - 10.1126/science.6857244 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1984-03390-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 1984-07965-001 AN - 1984-07965-001 AU - Prather, Dirk C. T1 - A behaviorally oriented study skills program. JF - Journal of Experimental Education JO - Journal of Experimental Education JA - J Exp Educ Y1 - 1983///Spr 1983 VL - 51 IS - 3 SP - 131 EP - 133 CY - US PB - Heldref Publications SN - 0022-0973 SN - 1940-0683 N1 - Accession Number: 1984-07965-001. Partial author list: First Author & Affiliation: Prather, Dirk C.; US Air Force Academy. Other Publishers: Taylor & Francis. Release Date: 19840301. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Academic Achievement; Air Force Personnel; Behavior Modification; Military Training; Study Habits. Classification: Curriculum & Programs & Teaching Methods (3530); Military Psychology (3800). Population: Human (10). Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study. Page Count: 3. Issue Publication Date: Spr 1983. AB - 24 male sophomore cadets at the US Air Force Academy were placed in 1 of 2 groups by rank-order place on a list of academically deficient students. Experimental and control Ss both received normal directive counseling. Experimental Ss received a behaviorally oriented study skills program requiring 2 hrs of supervisory time and minimal behavior recording and showed a mean increase of .54 GPA points; controls showed an increase of .02. (6 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - behaviorally oriented study skill programs KW - GPA KW - male sophomore cadets at US Air Force Academy KW - 1983 KW - Academic Achievement KW - Air Force Personnel KW - Behavior Modification KW - Military Training KW - Study Habits KW - 1983 DO - 10.1080/00220973.1983.11011851 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1984-07965-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 1983-09076-001 AN - 1983-09076-001 AU - McCloy, Thomas M. AU - Koonce, Jefferson M. T1 - Sex as a moderator variable in the selection and training of persons for a skilled task. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 1982/12// VL - 53 IS - 12 SP - 1170 EP - 1172 CY - US PB - Aerospace Medical Assn SN - 0095-6562 N1 - Accession Number: 1983-09076-001. PMID: 7159335 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: McCloy, Thomas M.; US Air Force Academy, Dept of Behavioral Science & Leadership, CO. Release Date: 19830401. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Ability; Human Sex Differences; Military Training; Perceptual Motor Learning; Skill Learning. Minor Descriptor: Aircraft Pilots; Fine Motor Skill Learning; Learning Rate; Personnel Selection. Classification: Personnel Management & Selection & Training (3620); Military Psychology (3800). Population: Human (10). Page Count: 3. Issue Publication Date: Dec, 1982. AB - Administered 5 cognitive tests (including Map Memory and the Embedded Figures Test) and 3 psychomotor tests (including a pursuit rotor task) to 51 male and 52 female US Air Force Academy cadets before they were taught 4 basic flight maneuvers followed by a complex chandelle maneuver. Results show that the males were faster in attaining the criterion level of performance on the flight tasks. One year later, the 45 male Ss and 45 female Ss still at the Academy were given a pretest on the flight maneuvers and then divided into control, cognitive training, and cognitive and motor training groups. It was found that some sex differences in the acquisition of task skills could be reduced by means of pretraining on specific cognitive and motor skills. In the prediction of trials to criterion (acquisition rate) of both the basic and the complex flight maneuvers, individually tailoring the regression equations by sex (as opposed to utilizing general overall regression equations) greatly enhanced the predictive capability. (4 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - sex KW - acquisition rate for cognitive & psychomotor skills & complex flight skills 1 yr later KW - US Air Force Academy cadets KW - selection & training implications KW - 1982 KW - Cognitive Ability KW - Human Sex Differences KW - Military Training KW - Perceptual Motor Learning KW - Skill Learning KW - Aircraft Pilots KW - Fine Motor Skill Learning KW - Learning Rate KW - Personnel Selection KW - 1982 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1983-09076-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 1983-12125-001 AN - 1983-12125-001 AU - Hughes, Richard L. AU - Harris, Dickie A. T1 - Electromyographic response to evaluative stress in test anxiety. JF - Psychological Reports JO - Psychological Reports JA - Psychol Rep Y1 - 1982/10// VL - 51 IS - 2 SP - 411 EP - 416 CY - US PB - Psychological Reports SN - 0033-2941 SN - 1558-691X N1 - Accession Number: 1983-12125-001. PMID: 7178345 Partial author list: First Author & Affiliation: Hughes, Richard L.; US Air Force Academy. Other Publishers: Sage Publications. Release Date: 19830601. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Electromyography; Performance; Test Anxiety. Classification: Psychophysiology (2560). Population: Human (10). Page Count: 6. Issue Publication Date: Oct, 1982. AB - Administered a challenging tracking task to 20 high and 21 low test-anxious college freshmen. Ss received instructions designed to maximize or minimize their evaluative apprehension. EMG measures of frontalis muscle tension were recorded during the task. Actual tracking performance, subjective tension, and estimates of relative success on the task were also assessed. There were no significant differences between high and low test-anxious Ss on either the physiological or the performance measures. There were, however, significant differences on the 2 self-report measures, suggesting a primary role for cognitive factors in test anxiety. Highly test-anxious Ss described themselves as more tense, and they more harshly evaluated their own performance. (12 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - test anxiety KW - EMG responses & performance on challenging tracking test KW - college students KW - 1982 KW - Electromyography KW - Performance KW - Test Anxiety KW - 1982 DO - 10.2466/pr0.1982.51.2.411 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1983-12125-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 1983-04558-001 AN - 1983-04558-001 AU - Schofield, Jeffrey E. AU - Giffin, Walter C. T1 - An analysis of aircrew procedural compliance. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 1982/10// VL - 53 IS - 10 SP - 964 EP - 969 CY - US PB - Aerospace Medical Assn SN - 0095-6562 N1 - Accession Number: 1983-04558-001. PMID: 7150158 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Schofield, Jeffrey E.; US Air Force Academy, Colorado Springs, CO. Release Date: 19830201. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Aerospace Personnel; Aircraft Pilots; Errors; Group Dynamics; Organizational Behavior. Classification: Personnel Evaluation & Job Performance (3630). Population: Human (10). Page Count: 6. Issue Publication Date: Oct, 1982. AB - Examined the relationships between aircrew compliance with procedures and operator errors, using data generated by H. P. Ruffell Smith (1979). Reanalysis showed that the character of individual operators, the chemistry of crew composition, and complex aspects of the operational environment affected procedural compliance by crew members. Associations between enumerated operator errors and several objective indicators of crew coordination were investigated. The correspondence among high operator error counts and infrequent compliance with specific crew coordination requirements was most notable when co-pilots were accountable for control of flight parameters. (3 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - individual operator error count KW - compliance with crew coordination procedures KW - aircrew KW - 1982 KW - Aerospace Personnel KW - Aircraft Pilots KW - Errors KW - Group Dynamics KW - Organizational Behavior KW - 1982 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1983-04558-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 1983-07415-001 AN - 1983-07415-001 AU - Hughes, Richard L. AU - Berry, Gene A. AU - Jackson, Linda D. AU - Dahle, Lee J. T1 - Functional cerebral space and athletic achievement. JF - Perceptual and Motor Skills JO - Perceptual and Motor Skills JA - Percept Mot Skills Y1 - 1982/08// VL - 55 IS - 1 SP - 323 EP - 325 CY - US PB - Perceptual & Motor Skills SN - 0031-5125 SN - 1558-688X N1 - Accession Number: 1983-07415-001. Other Journal Title: Perceptual & Motor Skills Research Exchange. Partial author list: First Author & Affiliation: Hughes, Richard L.; US Air Force Academy, Dept of Behavioral Sciences & Leadership, Colorado Springs, CO. Other Publishers: Sage Publications. Release Date: 19830401. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Achievement; Athletic Participation; Eye Fixation; Eye Movements; Lateral Dominance. Classification: Neuropsychology & Neurology (2520); Sports (3720). Population: Human (10). Page Count: 3. Issue Publication Date: Aug, 1982. AB - Assessed the reflective gaze preferences of 37 undergraduates who were subsequently assigned to a right-looking, left-looking, or mixed group. Half of the males and half of the females were right-handed, and the others were left-handed (as measured by the Edinburgh Handedness Inventory). Existing records for each S indicated that Ss who had more clearcut reflective gaze preferences had superior records of past athletic achievement than did Ss without reflective gaze preference. Results are consistent with the model of functional cerebral space that predicts superior performance on simultaneous tasks for more cerebrally lateralized individuals. (4 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - reflective gaze preference & athletic achievement KW - right vs left handed US Air Force Academy cadets KW - 1982 KW - Achievement KW - Athletic Participation KW - Eye Fixation KW - Eye Movements KW - Lateral Dominance KW - 1982 DO - 10.2466/pms.1982.55.1.323 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1983-07415-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Rosenbach, William E. AU - Gregory, Robert A. T1 - Job Attitudes of Commercial and U.S. Air Force Pilots. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 1982///Summer82 VL - 8 IS - 4 M3 - Article SP - 615 EP - 628 SN - 0095327X KW - MILITARY air pilots KW - ATTITUDES toward work KW - AIR pilots KW - AIR pilots -- United States KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 31898291; Rosenbach, William E. 1,2; Gregory, Robert A. 3; Affiliations: 1 : Deputy Head and Associate Professor, Department of Behavioral Sciences and Leadership, United States Air Force Academy; 2 : Member, Academy of Management, American Psychological Association, and Inter-University Seminar on Armed Forces and Society; 3 : Associate Professor and Chief, Organizational Behavior and Leadership Division, Department of Behavioral Sciences and Leadership, United States Air Force Academy; Source Info: Summer82, Vol. 8 Issue 4, p615; Subject Term: MILITARY air pilots; Subject Term: ATTITUDES toward work; Subject Term: AIR pilots; Subject Term: AIR pilots -- United States; Subject: UNITED States; Number of Pages: 14p; Illustrations: 1 Chart; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=24h&AN=31898291&site=ehost-live&scope=site DP - EBSCOhost DB - 24h ER - TY - JOUR ID - 1982-27621-001 AN - 1982-27621-001 AU - Mickley, G. Andrew AU - Teitelbaum, H. AU - Parker, G. A. AU - Vieras, F. AU - Dennison, B. A. AU - Bonney, C. H. T1 - Radiogenic changes in the behavior and physiology of the spontaneously hypertensive rat: Evidence for a dissociation between acute hypotension and incapacitation. JF - Aviation, Space, and Environmental Medicine JO - Aviation, Space, and Environmental Medicine JA - Aviat Space Environ Med Y1 - 1982/07// VL - 53 IS - 7 SP - 633 EP - 638 CY - US PB - Aerospace Medical Assn SN - 0095-6562 N1 - Accession Number: 1982-27621-001. PMID: 7115251 Other Journal Title: Aerospace Medicine; Aerospace Medicine and Human Performance. Partial author list: First Author & Affiliation: Mickley, G. Andrew; US Air Force Academy, CO. Release Date: 19821001. Correction Date: 20150629. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Hypertension; Hypotension; Performance; Radiation. Minor Descriptor: Rats. Classification: Physiological Psychology & Neuroscience (2500). Population: Animal (20). Page Count: 6. Issue Publication Date: Jul, 1982. AB - Investigated radiogenic blood pressure and performance changes in 11 rats bred for hypertension (spontaneously hypertensive rat [SHR]) and 11 WKY/N rats to determine if high blood pressure might attenuate early transient incapacitation (ETI). Although male SHRs experienced a severe ETI and a drop in blood pressure, much of the data is inconsistent with the hypothesis that hypotension causes performance decrements. (31 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - ionizing radiation KW - hypotension & avoidance performance decrement KW - spontaneously hypertensive rats KW - 1982 KW - Hypertension KW - Hypotension KW - Performance KW - Radiation KW - Rats KW - 1982 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1982-27621-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Blouse, Louis E. AU - Lathrop, George D. AU - Duruy, Harstry J. AU - Ball, Robert J. T1 - Rubella Screening and Vaccination Program for US Air Force Trainees: An Analysis of Findings. JO - American Journal of Public Health JF - American Journal of Public Health Y1 - 1982/03// VL - 72 IS - 3 M3 - Article SP - 280 EP - 283 PB - American Public Health Association SN - 00900036 AB - A preventive medicine program of rubella control for trainees at the Air Force Military Training Center. Lackland AFB. Texas, was begun in October 1977. Incoming trainees were screened for rubella susceptibility, and female trainees were additionally screened for pregnancy. During the period October 1977 to December 1978, an overall rubella susceptibility rate of 17.3 per cent was determined for 71,387 trainees entering basic training. Flights (50 persons each) to which these trainees are assigned varied widely in susceptibility from 0.0-47.7 per cent. Comparisons of susceptibility rates for trainees for geographic areas and stales indicated the highest overall percentage of susceptibles were from the Pacific geographic area with California showing the highest susceptibility (24.5 per cent). Race specific susceptibility rates were found to differ significantly between Whites and Blacks. 17.6 vs 14.8 per cent, respectively. The immunization program was effective as judged by a dampening of the incidence of clinical rubella at the basic training center and at other secondary training centers. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Public Health is the property of American Public Health Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VACCINATION KW - Public health KW - Vaccination KW - Communicable diseases -- Prevention KW - Rubella KW - Rubella virus KW - Togavirus infections KW - Viral vaccines KW - Preventive health services KW - United States. Air Force N1 - Accession Number: 4949234; Blouse, Louis E. 1; Lathrop, George D. 1; Duruy, Harstry J. 1; Ball, Robert J. 1; Affiliations: 1: Epidemiology Division, United States Air Force School of Aerospace Medicine, Brooks Air Force Base, Texas; Issue Info: Mar1982, Vol. 72 Issue 3, p280; Thesaurus Term: VACCINATION; Thesaurus Term: Public health; Thesaurus Term: Vaccination; Thesaurus Term: Communicable diseases -- Prevention; Subject Term: Rubella; Subject Term: Rubella virus; Subject Term: Togavirus infections; Subject Term: Viral vaccines; Subject Term: Preventive health services ; Company/Entity: United States. Air Force; NAICS/Industry Codes: 525120 Health and Welfare Funds; NAICS/Industry Codes: 928110 National Security; NAICS/Industry Codes: 923120 Administration of Public Health Programs; NAICS/Industry Codes: 325414 Biological Product (except Diagnostic) Manufacturing; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=4949234&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Finkelstein Jr., Leo T1 - The Calendrical Rite of the Ascension to Power. JO - Western Journal of Speech Communication: WJSC JF - Western Journal of Speech Communication: WJSC Y1 - 1981///Winter1981 VL - 45 IS - 1 M3 - Article SP - 51 EP - 59 SN - 01936700 AB - President Franklin D. Roosevelt's first inaugural address in 1933 marked a change in both the style and substance of inaugural addresses: because agreement occurs more easily at higher levels of abstraction, addresses have become more abstract so as to appeal to an increasingly pluralistic society; and to cope with crises such as the Great Depression of 1929 and with threats of armed conflict and Cold War, speeches have placed less emphasis on America's greatness than on the faith necessary to preserve that greatness. KW - RHETORIC KW - AUTHORSHIP KW - DEBATES & debating KW - ORAL communication KW - VALUES (Ethics) KW - POLITICAL oratory KW - INAUGURAL addresses of presidents KW - DEMOCRACY KW - UNITED States KW - ROOSEVELT, Franklin D. (Franklin Delano), 1882-1945 N1 - Accession Number: 15739164; Finkelstein Jr., Leo 1; Affiliations: 1 : Associate Professor of English, United States Air Force Academy, Colorado Springs, Colorado; Source Info: Winter1981, Vol. 45 Issue 1, p51; Historical Period: 1901 to 1977; Subject Term: RHETORIC; Subject Term: AUTHORSHIP; Subject Term: DEBATES & debating; Subject Term: ORAL communication; Subject Term: VALUES (Ethics); Subject Term: POLITICAL oratory; Subject Term: INAUGURAL addresses of presidents; Subject Term: DEMOCRACY; Subject: UNITED States; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ahl&AN=15739164&site=ehost-live&scope=site DP - EBSCOhost DB - ahl ER - TY - JOUR ID - 1982-00215-001 AN - 1982-00215-001 AU - Berry, Gene A. AU - Hughes, Richard L. AU - Jackson, Linda D. T1 - Sex and handedness in simple and integrated task performance. JF - Perceptual and Motor Skills JO - Perceptual and Motor Skills JA - Percept Mot Skills Y1 - 1980/12// VL - 51 IS - 3, Pt 1 SP - 807 EP - 812 CY - US PB - Perceptual & Motor Skills SN - 0031-5125 SN - 1558-688X N1 - Accession Number: 1982-00215-001. Other Journal Title: Perceptual & Motor Skills Research Exchange. Partial author list: First Author & Affiliation: Berry, Gene A.; US Air Force Academy, CO. Other Publishers: Sage Publications. Release Date: 19820101. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Handedness; Human Sex Differences; Performance; Task Complexity. Classification: Human Experimental Psychology (2300). Population: Human (10). Page Count: 6. Issue Publication Date: Dec, 1980. AB - Compared spatial and sequential tasks that were performed both independently and jointly by 40 undergraduates grouped by sex and dominant hand (determined by the Edinburgh Handedness Inventory). The 2 tasks were selected based on prior research suggesting that each is controlled by a different brain hemisphere. When the 2 tasks were performed independently, there was no handedness effect nor was there any sex–hand interaction. However, there was an expected slight spatial superiority in males. When both tasks were performed simultaneously, there was a significant advantage for right-handers and again a slight advantage for males. Results are attributed to the hemispheric interference that left-handers experienced on the joint task due to their less distinct hemispheric specialization. (10 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - sex & handedness in simple vs integrated spatial & sequential tasks KW - performance KW - college students KW - 1980 KW - Handedness KW - Human Sex Differences KW - Performance KW - Task Complexity KW - 1980 DO - 10.2466/pms.1980.51.3.807 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1982-00215-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Wakin, Malham M. T1 - Human Rights Versus Utility. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 1980///Fall80 VL - 7 IS - 1 M3 - Book Review SP - 160 EP - 164 SN - 0095327X AB - The article reviews the book "Just and Unjust Wars," by Michael Walzer. KW - VIETNAM War, 1961-1975 KW - NONFICTION KW - WALZER, Michael KW - JUST & Unjust Wars (Book) N1 - Accession Number: 31687658; Wakin, Malham M. 1; Affiliations: 1 : United States Air Force Academy; Source Info: Fall80, Vol. 7 Issue 1, p160; Subject Term: VIETNAM War, 1961-1975; Subject Term: NONFICTION; Number of Pages: 5p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=24h&AN=31687658&site=ehost-live&scope=site DP - EBSCOhost DB - 24h ER - TY - GEN AU - Evans, R T T1 - Optimal periodic control theory JO - Rep. No: FJSRL-TR-80-0024 JF - Rep. No: FJSRL-TR-80-0024 Y1 - 1980/08// M3 - Book Chapter AB - Existing conditions for locally optimizing a periodic process with free period are corrected, extended, and clarified using the strong properties of the hamiltonian structure of the optimal periodic control (opc) problem and the relationships of the second variation that result from the problem's periodicity constraints. A neighboring optimum feedback controller is determined which regulates all perturbations back to the locally minimizing periodic trajectory. This periodic regulator extends many of the concepts of the time invariant regulator. An illustrative problem is constructed to demonstrate the basic characteristics of this class of problem N1 - Accession Number: ISTA1802939; Evans, R T 1; Affiliations: 1 : Frank J. Seiler Research Lab., United States Air Force Academy, Co; Source Info: Aug. 1980; Note: Update Code: 1800; Number of Pages: 178p; Document Type: Book Chapter UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lih&AN=ISTA1802939&site=ehost-live&scope=site DP - EBSCOhost DB - lih ER - TY - JOUR ID - 2011-11211-007 AN - 2011-11211-007 AU - Kanas, Nick AU - Rogers, Martha AU - Kreth, Ernest AU - Patterson, Linda AU - Campbell, Rick T1 - The effectiveness of group psychotherapy during the first three weeks of hospitalization: A controlled study. JF - Journal of Nervous and Mental Disease JO - Journal of Nervous and Mental Disease JA - J Nerv Ment Dis Y1 - 1980/08// VL - 168 IS - 8 SP - 487 EP - 492 CY - US PB - Lippincott Williams & Wilkins SN - 0022-3018 SN - 1539-736X AD - Kanas, Nick, Psychiatry Service, Veterans Administration Medical Center, 116A, 4150 Clement Street, San Francisco, CA, US, 94121 N1 - Accession Number: 2011-11211-007. PMID: 7400801 Partial author list: First Author & Affiliation: Kanas, Nick; Psychiatry Service, Veterans Administration Medical Center, San Francisco, CA, US. Release Date: 20110725. Correction Date: 20160714. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Conference Information: Annual Meeting of the American Psychiatric Association, 131st, 1978, Atlanta, GA, US. Conference Note: Parts of this paper were presented at the aforementioned conference. Major Descriptor: Group Psychotherapy; Hospitalization; Psychiatric Patients; Treatment Effectiveness Evaluation. Classification: Group & Family Therapy (3313). Population: Human (10); Male (30); Female (40); Inpatient (50). Location: US. Age Group: Adolescence (13-17 yrs) (200); Adulthood (18 yrs & older) (300); Young Adulthood (18-29 yrs) (320); Thirties (30-39 yrs) (340); Middle Age (40-64 yrs) (360); Aged (65 yrs & older) (380). Tests & Measures: Psychiatric Evaluation Form; Overall Severity of Illness Scale; Global Assessment Scale DOI: 10.1037/t48384-000; Minnesota Multiphasic Personality Inventory; Thematic Apperception Test (TAT). Methodology: Empirical Study; Quantitative Study; Treatment Outcome. References Available: Y. Page Count: 6. Issue Publication Date: Aug, 1980. Copyright Statement: The Williams & Wilkins Co. 1980. AB - Insight-oriented group psychotherapy is a common modality of treatment on inpatient psychiatric wards, yet its effectiveness for acutely hospitalized patients has not been adequately studied. A comparison was made of the effects of three experimental conditions (insight-oriented group psychotherapy, activity-oriented task group, and unstructured control condition) on 86 acutely hospitalized psychiatric patients at a United States Air Force teaching hospital. The group psychotherapy and task group patients did not show greater improvement after 20 days of hospitalization than control patients. In fact, significantly more psychotic patients scored worse in the group psychotherapy condition. It is suggested that insight-oriented group psychotherapy may not be an effective treatment modality during the first 3 weeks of psychiatric hospitalization, especially for psychotic patients. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - group psychotherapy effectiveness KW - hospitalization KW - psychiatric patients KW - 1980 KW - Group Psychotherapy KW - Hospitalization KW - Psychiatric Patients KW - Treatment Effectiveness Evaluation KW - 1980 DO - 10.1097/00005053-198008000-00007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2011-11211-007&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Norton, Steven D. AU - Balloun, Joe L. AU - Konstantinovich, Branislav T1 - THE SOUNDNESS OF SUPERVISORY RATINGS AS PREDICTORS OF MANAGERIAL SUCCESS. JO - Personnel Psychology JF - Personnel Psychology Y1 - 1980///Summer80 VL - 33 IS - 2 M3 - Article SP - 377 EP - 388 PB - Wiley-Blackwell SN - 00315826 AB - A model of career development is presented. Using this model, three types of validity, empirical, content, and construct, are considered for supervisors' rating of non-managers as a predictor of success as managers. As defined in the Uniform Guidelines and the professional literature, all three are inapplicable to this prediction situation. Characteristics of a sound rating system are suggested. [ABSTRACT FROM AUTHOR] AB - Copyright of Personnel Psychology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMPLOYEES -- Rating of KW - JOB evaluation KW - SUPERVISORS KW - CAREER development KW - PREDICTION of occupational success KW - PERSONNEL changes KW - PERSONNEL management KW - INDUSTRIAL sociology N1 - Accession Number: 6264356; Norton, Steven D. 1; Balloun, Joe L. 1; Konstantinovich, Branislav 1; Affiliations: 1: Aeronautical Systems Division, AFSC, United States Air Force; Issue Info: Summer80, Vol. 33 Issue 2, p377; Thesaurus Term: EMPLOYEES -- Rating of; Thesaurus Term: JOB evaluation; Thesaurus Term: SUPERVISORS; Thesaurus Term: CAREER development; Thesaurus Term: PREDICTION of occupational success; Thesaurus Term: PERSONNEL changes; Thesaurus Term: PERSONNEL management; Thesaurus Term: INDUSTRIAL sociology; NAICS/Industry Codes: 624310 Vocational Rehabilitation Services; NAICS/Industry Codes: 611430 Professional and Management Development Training; NAICS/Industry Codes: 541612 Human Resources Consulting Services; NAICS/Industry Codes: 923130 Administration of Human Resource Programs (except Education, Public Health, and Veterans' Affairs Programs); Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=6264356&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Umstot, Denis D. T1 - Organization Development Technology and the Military: A Surprising Merger? JO - Academy of Management Review JF - Academy of Management Review Y1 - 1980/04// VL - 5 IS - 2 M3 - Article SP - 189 EP - 202 PB - Academy of Management SN - 03637425 AB - The results of organization development (OD) efforts in the United States military are reported and analyzed. The Army uses a decentralized approach with strong top management support, participation, and under- standing. The Navy relies heavily on a centralized survey-feedback model using mandatory participation. The Air Force has experimented with many OD approaches, the most widely adopted one being Job enrichment Although considerable resources are committed to OD, most claims of success are based on testimonials and anecdotal evidence. Them is little empirical evidence that OD either changes organizations or results in improved performance. In spite of these weaknesses, the very existence of larger-scale OD in the military, environment raises some interesting issues that revolve around values and the general applicability of OD technology. [ABSTRACT FROM AUTHOR] AB - Copyright of Academy of Management Review is the property of Academy of Management and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANIZATIONAL behavior KW - MANAGEMENT KW - ORGANIZATIONAL change KW - ORGANIZATIONAL effectiveness KW - PERSONNEL management KW - QUALITY of work life KW - DIVISION of labor KW - WORK environment KW - ARMED Forces KW - DECENTRALIZATION in government KW - UNITED States N1 - Accession Number: 4288717; Umstot, Denis D. 1; Affiliations: 1: United States Air Force Academy; Issue Info: Apr1980, Vol. 5 Issue 2, p189; Thesaurus Term: ORGANIZATIONAL behavior; Thesaurus Term: MANAGEMENT; Thesaurus Term: ORGANIZATIONAL change; Thesaurus Term: ORGANIZATIONAL effectiveness; Thesaurus Term: PERSONNEL management; Thesaurus Term: QUALITY of work life; Thesaurus Term: DIVISION of labor; Thesaurus Term: WORK environment; Subject Term: ARMED Forces; Subject Term: DECENTRALIZATION in government; Subject: UNITED States; NAICS/Industry Codes: 923130 Administration of Human Resource Programs (except Education, Public Health, and Veterans' Affairs Programs); NAICS/Industry Codes: 541612 Human Resources Consulting Services; NAICS/Industry Codes: 928110 National Security; Number of Pages: 14p; Illustrations: 1 Chart; Document Type: Article L3 - 10.5465/AMR.1980.4288717 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=4288717&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Wood, Frank R. T1 - Air Force Junior Officers. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 1980///Spring80 VL - 6 IS - 3 M3 - Article SP - 483 EP - 506 SN - 0095327X AB - The article examines the changing characteristic norms and values of the U.S. Air Force through unstructured interviews with 40 Air Force junior officers. The emerging trend will be documented as reflected in changing job characteristics, institutional recognition, social recognition, professional identity and the shift from internal to external orientation. Indications among Air Force junior officers suggest that another characteristic group based on management is emerging. It is also observed that the professional prestige of flying officers is declining. KW - MILITARY officers KW - UNITED States -- Armed Forces KW - AIR forces KW - AIR power (Military science) KW - ARMED Forces KW - JOB descriptions KW - PROFESSIONAL identity KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 31948457; Wood, Frank R. 1; Affiliations: 1 : United States Air Force Academy; Source Info: Spring80, Vol. 6 Issue 3, p483; Subject Term: MILITARY officers; Subject Term: UNITED States -- Armed Forces; Subject Term: AIR forces; Subject Term: AIR power (Military science); Subject Term: ARMED Forces; Subject Term: JOB descriptions; Subject Term: PROFESSIONAL identity; Subject: UNITED States; Number of Pages: 24p; Illustrations: 2 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=24h&AN=31948457&site=ehost-live&scope=site DP - EBSCOhost DB - 24h ER - TY - JOUR AU - Dishman, Benton G. T1 - Deterrent Military Forces. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 1980///Winter80 VL - 6 IS - 2 M3 - Article SP - 190 EP - 201 SN - 0095327X AB - The article compares casualty rates in deterrent military forces with those of active military engagement. Peacetime deterrent military service possesses great dangers and, in contrast with standard perceptions that deterrence is not a casualty-high discipline, it is more hazardous than many dangerous civilian occupations. The author stresses that the U.S. military will need to understand that the risks of active wartime efforts are different than the dangers posed by military deterrence, but that both are significant. KW - WAR casualties KW - DETERRENCE (Military strategy) KW - HAZARDOUS occupations KW - UNITED States -- Armed Forces KW - UNITED States KW - UNITED States. Army -- Field service N1 - Accession Number: 31897426; Dishman, Benton G. 1,2; Affiliations: 1 : Career officer, United States Air Force; 2 : 323rd Flight Training Wing, Mather AFB, California; Source Info: Winter80, Vol. 6 Issue 2, p190; Subject Term: WAR casualties; Subject Term: DETERRENCE (Military strategy); Subject Term: HAZARDOUS occupations; Subject Term: UNITED States -- Armed Forces; Subject: UNITED States; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=24h&AN=31897426&site=ehost-live&scope=site DP - EBSCOhost DB - 24h ER - TY - JOUR AU - Aly, Adel A. AU - Kay, David C. AU - Litwhiler, Daniel W. AU - Jr. T1 - Location Dominance on Spherical Surfaces. JO - Operations Research JF - Operations Research Y1 - 1979/09//Sep/Oct79 VL - 27 IS - 5 M3 - Article SP - 972 PB - INFORMS: Institute for Operations Research SN - 0030364X AB - This paper investigates the nature of optimal solutions for a location problem on a spherical surface with the great circle distance as measure The results are based upon Wendell and Hurter's generalization of Kuhn's characterization of a convex hull by dominance, it is shown that the search for an optimal solution for the "minisum" single facility location problem on the sphere, where demand points are not located entirely on a great circle arc, can be restricted to the spherically convex hull of the demand points. [ABSTRACT FROM AUTHOR] AB - Copyright of Operations Research is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDUSTRIAL location KW - FACILITY management KW - AXIOMS KW - AXIOMATIC set theory KW - CONVEX programming KW - GEOMETRY -- Foundations KW - SET theory KW - SYMBOLIC & mathematical logic KW - POLYTOPES N1 - Accession Number: 4476587; Aly, Adel A. 1; Kay, David C. 2; Litwhiler, Daniel W.; Jr. 2; Affiliations: 1: University of Oklahoma, Norman, Oklahoma.; 2: United States Air Force Academy, Colorado Springs, Colorado.; Issue Info: Sep/Oct79, Vol. 27 Issue 5, p972; Thesaurus Term: INDUSTRIAL location; Thesaurus Term: FACILITY management; Subject Term: AXIOMS; Subject Term: AXIOMATIC set theory; Subject Term: CONVEX programming; Subject Term: GEOMETRY -- Foundations; Subject Term: SET theory; Subject Term: SYMBOLIC & mathematical logic; Subject Term: POLYTOPES; NAICS/Industry Codes: 531120 Lessors of Nonresidential Buildings (except Miniwarehouses); Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=4476587&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 1980-28944-001 AN - 1980-28944-001 AU - Rosenbach, William E. AU - Dailey, Robert C. AU - Morgan, Cyril P. T1 - Perceptions of job characteristics and affective work outcomes for women and men. JF - Sex Roles JO - Sex Roles JA - Sex Roles Y1 - 1979/06// VL - 5 IS - 3 SP - 267 EP - 277 CY - Germany PB - Springer SN - 0360-0025 SN - 1573-2762 N1 - Accession Number: 1980-28944-001. Partial author list: First Author & Affiliation: Rosenbach, William E.; US Air Force Academy, CO. Release Date: 19801001. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Human Sex Differences; Sex Role Attitudes; Stereotyped Attitudes; Work (Attitudes Toward). Classification: Occupational Interests & Guidance (3610); Sex Roles & Women's Issues (2970). Population: Human (10). Page Count: 11. Issue Publication Date: Jun, 1979. AB - 123 men and women were studied to assess their attitudes about job dimensions and affective work outcomes (Job Diagnostic Survey). There were few differences between women's and men's perceptions of job dimensions and work outcomes or between men's and women's perceptions of positive relationships between job dimension and affected work outcomes. It is concluded that differences that exist in work attitudes are artifacts of hierarchical position and sex-role stereotyping and will disappear when women are allowed to move into jobs that are characterized by the presence of high levels of intrinsic job dimensions. (27 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - attitudes about job dimensions & work outcomes KW - males vs females KW - 1979 KW - Human Sex Differences KW - Sex Role Attitudes KW - Stereotyped Attitudes KW - Work (Attitudes Toward) KW - 1979 DO - 10.1007/BF00287394 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1980-28944-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - GEN AU - Klotz, Randall W. AU - Hulsey, Sandy AU - Harvey, Pam AU - Murray, Jean AU - Englund, Josephine AU - Watkins, M. Joy AU - Good, Arnold T1 - LETTERS. JO - RN JF - RN Y1 - 1979/01// VL - 42 IS - 1 M3 - Letter SP - 5 EP - 6 SN - 00337021 AB - Presents several letters to the editor of 'RN' journal, which appeared in its January 1979 issue which deal with nursing and medicine. KW - NURSING KW - MEDICINE N1 - Accession Number: 4878626; Klotz, Randall W. 1; Hulsey, Sandy; Harvey, Pam; Murray, Jean; Englund, Josephine; Watkins, M. Joy; Good, Arnold 2; Source Information: Jan79, Vol. 42 Issue 1, p5; Subject: NURSING; Subject: MEDICINE; Number of Pages: 2p; Document Type: Letter; Full Text Word Count: 748 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=4878626&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - JOUR ID - 1980-20407-001 AN - 1980-20407-001 AU - Wagoner, J. H. AU - Sullenberger, C. B. T1 - Pupillary size as an indicator of preference in humor. JF - Perceptual and Motor Skills JO - Perceptual and Motor Skills JA - Percept Mot Skills Y1 - 1978/12// VL - 47 IS - 3, Pt 1 SP - 779 EP - 782 CY - US PB - Perceptual & Motor Skills SN - 0031-5125 SN - 1558-688X N1 - Accession Number: 1980-20407-001. Other Journal Title: Perceptual & Motor Skills Research Exchange. Partial author list: First Author & Affiliation: Wagoner, J. H.; US Air Force Academy, Colorado Springs, CO. Other Publishers: Sage Publications. Release Date: 19800701. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cartoons (Humor); Preferences; Pupil Dilation. Classification: Motivation & Emotion (2360). Population: Human (10). Page Count: 4. Issue Publication Date: Dec, 1978. AB - Studied the effects of simple, humorous cartoons on pupil size. 11 Air Force cadets were presented 3 cartoons for 10 sec with a 5-sec control period between the presentations. All Ss received the same task condition. When the presentation was complete, each S ranked the 3 cartoons to show their preference on the dimension of humor. The data show a significant correlation between the rank order and the pupillary dilation. Means of pupil size for the cartoons were also significantly different from control means. (15 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - simple humorous cartoons KW - pupil size as indicator of preference in humor KW - US Air Force cadets KW - 1978 KW - Cartoons (Humor) KW - Preferences KW - Pupil Dilation KW - 1978 DO - 10.2466/pms.1978.47.3.779 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1980-20407-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Gorman, Charles D. AU - Clover, William H. AU - Doherty, Michael E. T1 - Can We Learn Anything About Interviewing Real People From "Interviews" of Paper People? Two Studies of the External Validity of a Paradigm. JO - Organizational Behavior & Human Performance JF - Organizational Behavior & Human Performance Y1 - 1978/10// VL - 22 IS - 2 M3 - Article SP - 165 EP - 192 SN - 00305073 AB - Two investigations of the external validity of the paper-people analog are presented. One, a laboratory study, had advanced graduate students in industrial psychology make predictions about undergraduates based on test data plus an interview and also make predictions based on the test data (i.e., paper people) alone. Complete criterion data allowed traditional validity analyses to be carried out. The second study had highly experienced interviewers rate the paper credentials of people whom they had interviewed in the past. Judgments based on interviewees were compared with judgments made on paper people in the two studies. Sufficient data are presented to allow readers to draw their own conclusions concerning the representativeness of the paper-people paradigm. Our own conclusion is that the answer to the question raised in the title is ‘No.’ [ABSTRACT FROM AUTHOR] AB - Copyright of Organizational Behavior & Human Performance is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMPLOYMENT interviewing KW - INDUSTRIAL psychology KW - PERSONNEL management KW - INTERVIEWING KW - MULTIVARIATE analysis KW - TRUTHFULNESS & falsehood KW - GRADUATE students KW - PARADIGM (Theory of knowledge) KW - SURVEYS N1 - Accession Number: 6336677; Gorman, Charles D. 1; Clover, William H. 2; Doherty, Michael E. 3; Affiliations: 1: USAF Occupational Measurement Center; 2: US Air Force Academy; 3: Bowling Green State University; Issue Info: Oct78, Vol. 22 Issue 2, p165; Thesaurus Term: EMPLOYMENT interviewing; Thesaurus Term: INDUSTRIAL psychology; Thesaurus Term: PERSONNEL management; Thesaurus Term: INTERVIEWING; Thesaurus Term: MULTIVARIATE analysis; Subject Term: TRUTHFULNESS & falsehood; Subject Term: GRADUATE students; Subject Term: PARADIGM (Theory of knowledge); Subject Term: SURVEYS; NAICS/Industry Codes: 923130 Administration of Human Resource Programs (except Education, Public Health, and Veterans' Affairs Programs); NAICS/Industry Codes: 541612 Human Resources Consulting Services; Number of Pages: 28p; Illustrations: 1 Diagram, 8 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=6336677&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR TY - GEN AU - Feldtman, R. W.; AU - Andrassy, R. J.; T1 - Meeting exceptional nutritional needs. 2. Elemental enteral nutrition CT - Meeting exceptional nutritional needs. 2. Elemental enteral nutrition JO - Postgrad. Med. JF - Postgrad. Med. Y1 - 1978/09/01/ VL - 64 IS - Sep SP - 65 EP - 73 AD - Reprints: US Air Force Academy Hosp., US Air Force Academy, CO 80840 AD - Wilford Hall USAF Med. Cent., Lackland AFB, TX N1 - Accession Number: 16-1823; Language: English; References: 34; Journal Coden: POMDAS; Section Heading: Pharmacology; Abstract Author: Norman C. Lacina N2 - The use of concentrated, chemically defined diets administered to hospitalized patients via tube feedings is discussed. Topics discussed included tube placement, administration rates, indications, and adverse effects. Elemental enteral alimentation is considered useful in cases of short gut syndrome, pancreatic disease, partial intestinal obstruction, colitis, anorexia nervosa, hyperemesis associated with pregnancy, trauma, fistulas, GI vascular injury, renal and hepatic disease, pre and postsurgical patients and patients receiving abdominal radiation therapy. KW - Hyperalimentation--nutrition--formulations, discussion; KW - Drug administration routes--hyperalimentation--nutrition, formulations, discussion; KW - Toxicity--hyperalimentation--nutrition, formulations, discussion; KW - Formulations--hyperalimentation--nutrition, discussion; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ipa&AN=16-1823&site=ehost-live&scope=site DP - EBSCOhost DB - ipa ER - TY - JOUR ID - 1980-06298-001 AN - 1980-06298-001 AU - Taylor, Robert L. AU - Helmer, F. Theodore T1 - A case study of information gathering for policy decisions in public schools. JF - The Journal of Educational Research JO - The Journal of Educational Research JA - J Educ Res Y1 - 1978/09//Sep-Oct, 1978 VL - 72 IS - 1 SP - 23 EP - 28 CY - US PB - Heldref Publications SN - 0022-0671 SN - 1940-0675 N1 - Accession Number: 1980-06298-001. Partial author list: First Author & Affiliation: Taylor, Robert L.; US Air Force Academy. Other Publishers: Taylor & Francis. Release Date: 19800301. Correction Date: 20111010. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Information; Management Decision Making; Organizational Objectives; Public School Education; School Administrators. Minor Descriptor: Public Opinion. Classification: Educational Administration & Personnel (3510). Population: Human (10). Page Count: 6. Issue Publication Date: Sep-Oct, 1978. AB - School administrators often find themselves responding to small but vocal interest groups that do not represent the needs and perceptions of the constituency. A comprehensive survey of client-systems in a medium-sized school district is reported, with emphasis on how data on perceptions and needs can be gathered. The study shows how the data were used to influence policy decisions and defines the obligation that decision makers have for making better informed and responsive decisions in the public sector. (4 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - gathering information on perceptions & needs of interest groups KW - policy decisions in public schools KW - school administrators KW - 1978 KW - Information KW - Management Decision Making KW - Organizational Objectives KW - Public School Education KW - School Administrators KW - Public Opinion KW - 1978 DO - 10.1080/00220671.1978.10885114 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1980-06298-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR TY - GEN AU - Feldtman, R. W.; AU - Andrassy, R. J.; T1 - Meeting exceptional nutritional needs. 1. Total parenteral nutrition CT - Meeting exceptional nutritional needs. 1. Total parenteral nutrition JO - Postgrad. Med. JF - Postgrad. Med. Y1 - 1978/08/01/ VL - 64 IS - Aug SP - 64 EP - 77 AD - Reprints: US Air Force Academy Hosp., US Air Force Academy, CO 80840 AD - Wilford Hall USAF Med. Cent., Lackland AFB, TX N1 - Accession Number: 16-1826; Language: English; References: 51; Journal Coden: POMDAS; Section Heading: Pharmacology; Abstract Author: Norman C. Lacina N2 - The administration, nutrient and electrolyte content, formulation and hazards of total parenteral nutrition are discussed. KW - Hyperalimentation--formulations--administration, toxicity, discussion; KW - Formulations--hyperalimentation--administration, toxicity, discussion; KW - Drug administration--hyperalimentation--formulations, toxicity, discussion; KW - Electrolytes--hyperalimentation--formulations, toxicity, discussion; KW - Toxicity--hyperalimentation--formulations, administration, discussion; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ipa&AN=16-1826&site=ehost-live&scope=site DP - EBSCOhost DB - ipa ER - TY - JOUR ID - 1979-29955-001 AN - 1979-29955-001 AU - Taylor, Robert L. AU - Zawacki, Robert A. T1 - Collaborative goal setting in performance appraisal: A field experiment. JF - Public Personnel Management JO - Public Personnel Management JA - Public Pers Manage Y1 - 1978/05//May-Jun, 1978 VL - 7 IS - 3 SP - 162 EP - 170 CY - US PB - International Public Management Association for Human Resources SN - 0091-0260 SN - 1945-7421 N1 - Accession Number: 1979-29955-001. Other Journal Title: Personnel Administration & Public Personnel Review. Partial author list: First Author & Affiliation: Taylor, Robert L.; US Air Force Academy, CO. Other Publishers: Sage Publications. Release Date: 19791001. Correction Date: 20131007. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Feedback; Goals; Group Participation; Involvement; Personnel Training. Minor Descriptor: Air Force Personnel; Personnel Evaluation. Classification: Personnel Evaluation & Job Performance (3630); Military Psychology (3800). Population: Human (10). Page Count: 9. Issue Publication Date: May-Jun, 1978. AB - The US Air Force Academy's performance appraisal and development system (PADS) was changed to measure the effects of collaborative goal setting. Data from 152 male cadets administered pre- and posttest measures reveal significant differences in perceived involvement, feedback, and attitudes between groups, with the experimental group feeling more involved, more satisfied with the PADS, and receiving more positive feedback. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - collaborative goal setting KW - involvement & feedback & satisfaction with performance appraisal system KW - US Air Force cadets KW - 1978 KW - Feedback KW - Goals KW - Group Participation KW - Involvement KW - Personnel Training KW - Air Force Personnel KW - Personnel Evaluation KW - 1978 DO - 10.1177/009102607800700303 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1979-29955-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Badgett, L. D. T1 - PREFERENTIAL TARIFF REDUCTIONS. JO - Journal of International Economics JF - Journal of International Economics Y1 - 1978/02// VL - 8 IS - 1 M3 - Article SP - 79 EP - 92 SN - 00221996 AB - The U.S.-Philippine preferential tariff relation (PTR) is examined to determine whether the growth of three major Philippine processing activities can be attributed to the PTR, and whether the PTR provided the Philippines with benefits of important magnitude. The PTR is shown to have been a significant determinant of Philippine production of the products, and of the geographic distribution of their export. The preference subsidy was not large in relation to total Philippine export revenue, although it was sufficiently large to suggest that at least two of the processing activities would not have developed without preference. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of International Economics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TARIFF preferences KW - EXPORTS KW - PRODUCTION (Economic theory) KW - INTERNATIONAL economic relations KW - IMPERIAL preference KW - REVENUE KW - PHILIPPINES KW - UNITED States N1 - Accession Number: 5018368; Badgett, L. D. 1; Affiliations: 1: United States Air Force Academy, Colorado Springs, CO 80840, U.S.A.; Issue Info: Feb78, Vol. 8 Issue 1, p79; Thesaurus Term: TARIFF preferences; Thesaurus Term: EXPORTS; Thesaurus Term: PRODUCTION (Economic theory); Thesaurus Term: INTERNATIONAL economic relations; Subject Term: IMPERIAL preference; Subject Term: REVENUE; Subject: PHILIPPINES; Subject: UNITED States; NAICS/Industry Codes: 911420 International assistance; Number of Pages: 14p; Illustrations: 2 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=5018368&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Cummings, Larry L. AU - O'Connell, Michael J. T1 - Organizational Innovation: A Model and Needed Research. JO - Journal of Business Research JF - Journal of Business Research Y1 - 1978/01// VL - 6 IS - 1 M3 - Article SP - 33 EP - 50 SN - 01482963 AB - Recent literature relevant to organizational innovation is reviewed and integrated into a conceptual framework, which relates several organizational variables to the main stages of innovation. Both prescriptive approaches and empirically derived descriptions of organizational innovation are used to develop the conceptual model. Innovation is viewed as a subset of organizational change in which new products, technologies, or structures are introduced with the objective of improving organizational effectiveness. Either of two major stimuli-(1) discrepancies between goals and performance and (2) opportunistic surveillance-initiate the innovative process. The five stages in this process are (1) search for the source of the problem, (2) alternative generation, (3) alternative evaluation, (4) selection and initiation of an alter- native, and (5) acceptance and routinization. Variables that are postulated to influence the process and that in turn are postulated to be influenced by innovation are goals, environment, technology, structure, organizational control and coordination processes, leadership, and organizational slack. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Business Research is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANIZATIONAL change KW - ORGANIZATIONAL structure KW - MANAGEMENT KW - ORGANIZATION KW - COMMERCIAL products N1 - Accession Number: 17291806; Cummings, Larry L. 1; O'Connell, Michael J. 2; Affiliations: 1: University of Wisconsin-Madison; 2: United States Air Force; Issue Info: Jan1978, Vol. 6 Issue 1, p33; Thesaurus Term: ORGANIZATIONAL change; Thesaurus Term: ORGANIZATIONAL structure; Thesaurus Term: MANAGEMENT; Thesaurus Term: ORGANIZATION; Thesaurus Term: COMMERCIAL products; NAICS/Industry Codes: 523130 Commodity Contracts Dealing; NAICS/Industry Codes: 523140 Commodity Contracts Brokerage; Number of Pages: 18p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=17291806&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Jefferies, Chris L. T1 - PUBLIC ADMINISTRATION AND THE MILITARY. JO - Public Administration Review JF - Public Administration Review Y1 - 1977/07//Jul/Aug77 VL - 37 IS - 4 M3 - Article SP - 321 EP - 333 PB - Wiley-Blackwell SN - 00333352 AB - This article addresses the problem of the lack of interaction between military administration and public administration. The author argues that the two fields are indeed compatible and that there is a definite need for more interchange between them. The major causes for this lack of interaction lie with both the military and public administrators. The author describes three such causes: the military's adoption of business techniques for planning and efficiency and its reliance on private industry; the supposed uniqueness of the military profession; and lack of interest on the part of public administrators. The mutuality of the two fields is demonstrated not only by the implicit allusions by public administration as a field to the relevance of the military to itself, but also by means of specific examples of mutual interest. The author concludes by advocating a more appropriate orientation of military administration than its present business orientation. "Is not military administration public administration?" he asks. To concerned students of both public and military administration, it is evident that little or no interchange occurs between the two fields. KW - PUBLIC administration KW - BUSINESS planning KW - BUSINESS enterprises KW - MILITARY administration KW - PUBLIC officers KW - MILITARY planning KW - ADMINISTRATIVE THEORY, METHODS, PROBLEMS, AND TRENDS N1 - Accession Number: 4613622; Jefferies, Chris L. 1; Affiliations: 1: Major, USAF, US. Air Force Academy; Issue Info: Jul/Aug77, Vol. 37 Issue 4, p321; Thesaurus Term: PUBLIC administration; Thesaurus Term: BUSINESS planning; Thesaurus Term: BUSINESS enterprises; Subject Term: MILITARY administration; Subject Term: PUBLIC officers; Subject Term: MILITARY planning; Author-Supplied Keyword: ADMINISTRATIVE THEORY, METHODS, PROBLEMS, AND TRENDS; NAICS/Industry Codes: 921190 Other General Government Support; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=4613622&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Luthans, Fred AU - Stewart, Todd I. T1 - A General contingency Theory of Management. JO - Academy of Management Review JF - Academy of Management Review Y1 - 1977/04// VL - 2 IS - 2 M3 - Article SP - 181 EP - 195 PB - Academy of Management SN - 03637425 AB - Recent formal recognition of situational influences on the management of complex organizations has led to an increasing number of contingency models, but a comprehensive and integrative theoretical framework for contingency management has been lacking. A General Contingency Theory (GCT) of Management is introduced as an overall framework that integrates the diverse process, quantitative and behavioral approaches to management; incorporates the environment; and begins to bridge the gap between management theory and practice. [ABSTRACT FROM AUTHOR] AB - Copyright of Academy of Management Review is the property of Academy of Management and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONTINGENCY theory (Management) KW - COMPLEX organizations KW - RESEARCH KW - MANAGEMENT research KW - INDUSTRIAL management KW - ORGANIZATIONAL sociology KW - WORK -- Sociological aspects KW - ORGANIZATIONAL behavior KW - LEADERSHIP KW - ORGANIZATIONAL structure KW - ORGANIZATIONAL change KW - MANAGEMENT KW - INDUSTRIAL organization (Management) KW - BEHAVIORAL assessment N1 - Accession Number: 4409038; Luthans, Fred 1; Stewart, Todd I. 2; Affiliations: 1: University of Nebraska; 2: United States Air Force; Issue Info: Apr1977, Vol. 2 Issue 2, p181; Thesaurus Term: CONTINGENCY theory (Management); Thesaurus Term: COMPLEX organizations; Thesaurus Term: RESEARCH; Thesaurus Term: MANAGEMENT research; Thesaurus Term: INDUSTRIAL management; Thesaurus Term: ORGANIZATIONAL sociology; Thesaurus Term: WORK -- Sociological aspects; Thesaurus Term: ORGANIZATIONAL behavior; Thesaurus Term: LEADERSHIP; Thesaurus Term: ORGANIZATIONAL structure; Thesaurus Term: ORGANIZATIONAL change; Thesaurus Term: MANAGEMENT; Thesaurus Term: INDUSTRIAL organization (Management); Subject Term: BEHAVIORAL assessment; NAICS/Industry Codes: 541612 Human Resources Consulting Services; Number of Pages: 15p; Document Type: Article L3 - 10.5465/AMR.1977.4409038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=4409038&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Sims Jr., Henry P. AU - Szilagyi, Andrew D. AU - McKemey, Dale R. T1 - Antecedents of Work Related Expectancies. JO - Academy of Management Journal JF - Academy of Management Journal Y1 - 1976/12// VL - 19 IS - 4 M3 - Article SP - 547 EP - 559 PB - Academy of Management SN - 00014273 AB - This research investigated the environmental antecedents of expectancy I and expectancy II. Expectancy II was found to be strongly related to supervisory variables and, to a lesser extent, to organization practices variables. Expectancy I was mildly related to organization practices variables. Internal control individuals had stronger El and Ell perceptions. Implications for management development and training are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Academy of Management Journal is the property of Academy of Management and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXPECTANCY theories KW - WORK environment KW - MANAGEMENT KW - ORGANIZATIONAL behavior KW - RESEARCH KW - MANAGEMENT styles KW - EXECUTIVES -- Training of KW - EMPLOYEE motivation KW - QUESTIONNAIRES KW - EMPLOYEES -- Attitudes KW - JOB descriptions KW - EXECUTIVES -- Attitudes KW - Administrative Processes and Organizational Variables N1 - Accession Number: 4407805; Sims Jr., Henry P. 1; Szilagyi, Andrew D. 2; McKemey, Dale R. 3; Affiliations: 1: Pennsylvania State University; 2: University of Houston; 3: United States Air Force; Issue Info: Dec1976, Vol. 19 Issue 4, p547; Thesaurus Term: EXPECTANCY theories; Thesaurus Term: WORK environment; Thesaurus Term: MANAGEMENT; Thesaurus Term: ORGANIZATIONAL behavior; Thesaurus Term: RESEARCH; Thesaurus Term: MANAGEMENT styles; Thesaurus Term: EXECUTIVES -- Training of; Thesaurus Term: EMPLOYEE motivation; Thesaurus Term: QUESTIONNAIRES; Thesaurus Term: EMPLOYEES -- Attitudes; Thesaurus Term: JOB descriptions; Thesaurus Term: EXECUTIVES -- Attitudes; Author-Supplied Keyword: Administrative Processes and Organizational Variables; NAICS/Industry Codes: 611430 Professional and Management Development Training; Number of Pages: 13p; Illustrations: 3 Charts; Document Type: Article L3 - 10.2307/255790 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=4407805&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 1977-21062-001 AN - 1977-21062-001 AU - O'Connell, Michael J. AU - Cummings, L. L. T1 - The moderating effects of environment and structure on the satisfaction-tension-influence network. JF - Organizational Behavior & Human Performance JO - Organizational Behavior & Human Performance JA - Organ Behav Hum Perform Y1 - 1976/12// VL - 17 IS - 2 SP - 351 EP - 366 CY - Netherlands PB - Elsevier Science SN - 0030-5073 N1 - Accession Number: 1977-21062-001. Other Journal Title: Organizational Behavior and Human Decision Processes. Partial author list: First Author & Affiliation: O'Connell, Michael J.; US Air Force Academy, Colorado Springs, CO. Release Date: 19770701. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Group Structure; Interpersonal Interaction; Messages; Simulation Games; Social Perception. Minor Descriptor: Anxiety; Satisfaction. Classification: Social Psychology (3000). Population: Human (10). Page Count: 16. Issue Publication Date: Dec, 1976. AB - Reports relations among a dependent variable network consisting of satisfaction-tension-influence and the moderating effects of informational and structural characteristics. 72 ROTC and 72 US Air Force cadets participated in a 3 3 2 factorial design. Dependent variables were perceptions of satisfaction, tension, and influence. Moderator variables were information load, information specificity, and group structure. Results confirm the general field-study findings of a negative relation between tension and satisfaction and a positive relation between influence and satisfaction. The tension-satisfaction relation was most strongly moderated by information, less so by structure. The influence-satisfaction and influence-tension relations were only weakly moderated. Possible interpretations are offered in terms of (a) the degree to which dependent variables in organizational behavior are objectively and environmentally anchored and (b) the possibility of methodological artifacts (combining self and other perceptions) influencing the 'moderatorability' of dependent variables in organizational behavior. It is concluded that (a) informational and organizational characteristics can influence the dependent variable network and (b) the relations among dependent variables cannot be accurately described with simple statements implying unidimensional measures whose relations are stable across conditions. (34 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - information load & specificity & group structure KW - task satisfaction & felt tension & assessment of group members' influence in simulation games KW - ROTC & US Air Force cadets KW - 1976 KW - Group Structure KW - Interpersonal Interaction KW - Messages KW - Simulation Games KW - Social Perception KW - Anxiety KW - Satisfaction KW - 1976 DO - 10.1016/0030-5073(76)90072-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1977-21062-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 1976-30815-001 AN - 1976-30815-001 AU - O'Connell, Michael J. AU - Cummings, Larry L. AU - Huber, George P. T1 - The effects of environmental information and decision unit structure on felt tension. JF - Journal of Applied Psychology JO - Journal of Applied Psychology JA - J Appl Psychol Y1 - 1976/08// VL - 61 IS - 4 SP - 493 EP - 500 CY - US PB - American Psychological Association SN - 0021-9010 SN - 1939-1854 N1 - Accession Number: 1976-30815-001. Partial author list: First Author & Affiliation: O'Connell, Michael J.; US Air Force Academy. Release Date: 19760101. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Air Force Personnel; Army Personnel; Group Dynamics; Group Structure; Information. Minor Descriptor: Organizational Climate; Role Conflicts; Stress. Classification: Working Conditions & Industrial Safety (3670); Military Psychology (3800). Population: Human (10). References Available: Y. Page Count: 8. Issue Publication Date: Aug, 1976. Copyright Statement: American Psychological Association. 1976. AB - Treated 4 measures of felt tension, derived from a factor analysis of the R. L. Kahn et al (1964) tension index, as variables dependent on information inputs from the environment and on the group structure of the decision unit. In an experimental simulation of a military conflict, information load and information specificity were manipulated to control the environment of 48 3-man decision groups (72 ROTC students and 72 US Air Force Academy cadets) structured as either committees of coequals or 2-level hierarchies. Salient findings from the analysis suggest that (a) 'role overload tension' is positively related to information load, while 'generalized tension' is positively related to information load only when information specificity is low; (b) 'information deprivation tension' is inversely related to information specificity for bureaucratically structured groups but not for unstructured groups, and 'generalized tension' is inversely related to information specificity only at high information loads; and (c) 'role overload tension' and 'role ambiguity tension' are lower in groups with a structured hierarchy. (22 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - environmental information load & specificity & decision unit group structure KW - felt tension in simulated military conflict KW - ROTC students & US Air Force Academy cadets KW - 1976 KW - Air Force Personnel KW - Army Personnel KW - Group Dynamics KW - Group Structure KW - Information KW - Organizational Climate KW - Role Conflicts KW - Stress KW - 1976 DO - 10.1037/0021-9010.61.4.493 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1976-30815-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Fabyanic, Thomas A. T1 - Manpower Trends in the British All-Volunteer Force. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 1976///Summer76 VL - 2 IS - 4 M3 - Article SP - 553 EP - 572 SN - 0095327X AB - Examines the growth of the military in Great Britain both from conscription and from volunteers, 1960-76. KW - GREAT Britain -- Armed Forces KW - RECRUITING & enlistment (Armed Forces) KW - MANPOWER KW - DRAFT (Military service) KW - VOLUNTARY military service KW - ARMED Forces -- Appropriations & expenditures KW - ARMED Forces KW - GREAT Britain N1 - Accession Number: 31897341; Fabyanic, Thomas A. 1,2; Affiliations: 1 : Career officer, United States Air Force; 2 : Air War College; Source Info: Summer76, Vol. 2 Issue 4, p553; Historical Period: 1960 to 1976; Subject Term: GREAT Britain -- Armed Forces; Subject Term: RECRUITING & enlistment (Armed Forces); Subject Term: MANPOWER; Subject Term: DRAFT (Military service); Subject Term: VOLUNTARY military service; Subject Term: ARMED Forces -- Appropriations & expenditures; Subject Term: ARMED Forces; Subject: GREAT Britain; Number of Pages: 20p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hia&AN=31897341&site=ehost-live&scope=site DP - EBSCOhost DB - hia ER - TY - JOUR ID - 1977-11629-001 AN - 1977-11629-001 AU - Galloway, Judith M. T1 - The impact of the admission of women to the service academies on the role of the woman line officer. JF - American Behavioral Scientist JO - American Behavioral Scientist JA - Am Behav Sci Y1 - 1976/05//May-Jun, 1976 VL - 19 IS - 5 SP - 647 EP - 664 CY - US PB - Sage Publications SN - 0002-7642 SN - 1552-3381 N1 - Accession Number: 1977-11629-001. Other Journal Title: Political Research, Organization and Design. Partial author list: First Author & Affiliation: Galloway, Judith M.; US Air Force Academy, Boulder, CO. Release Date: 19770501. Correction Date: 20121001. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Human Females; Military Personnel; Military Training; Student Admission Criteria. Classification: Personnel Management & Selection & Training (3620); Military Psychology (3800). Population: Human (10); Female (40). Page Count: 18. Issue Publication Date: May-Jun, 1976. AB - Examines evidence (a) from Ivy League colleges on the performance of females in academics, athletics, and extracurricular activities and (b) from stress studies conducted by the National Aeronautics and Space Administration concerning women's capability for space flight. It is concluded that women should perform well at US service academies. It is contended also that, having shared in the unique experience of an academy education, women would form bonds of friendship and respect with their male peers and gain acceptance for themselves as legitimate professionals. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - admission of women to service academies KW - impact on woman line officer's role KW - 1976 KW - Human Females KW - Military Personnel KW - Military Training KW - Student Admission Criteria KW - 1976 DO - 10.1177/000276427601900510 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1977-11629-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Adams, John R. AU - Swanson, Lloyd A. T1 - Information Processing Behavior and Estimating Accuracy in Operations Management. JO - Academy of Management Journal JF - Academy of Management Journal Y1 - 1976/03// VL - 19 IS - 1 M3 - Article SP - 98 EP - 110 PB - Academy of Management SN - 00014273 AB - The estimation process was investigated to determine what personal and situational factors influence the accuracy of estimates in an operational environment. The primary conclusion is that in spite of outside uncontrollable variables, the accuracy of estimates is largely determined by factors which are controllable by the estimator and by management. [ABSTRACT FROM AUTHOR] AB - Copyright of Academy of Management Journal is the property of Academy of Management and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPERATIONS research KW - MANAGEMENT -- Study & teaching KW - INDUSTRIAL engineering KW - ESTIMATION theory KW - INFORMATION processing KW - INDUSTRIAL management KW - MANAGEMENT controls KW - EXECUTIVE ability (Management) KW - RESEARCH KW - QUANTITATIVE research KW - STUDY & teaching N1 - Accession Number: 4397352; Adams, John R. 1; Swanson, Lloyd A. 2; Affiliations: 1: United States Air Force; 2: Syracuse University; Issue Info: Mar1976, Vol. 19 Issue 1, p98; Thesaurus Term: OPERATIONS research; Thesaurus Term: MANAGEMENT -- Study & teaching; Thesaurus Term: INDUSTRIAL engineering; Thesaurus Term: ESTIMATION theory; Thesaurus Term: INFORMATION processing; Thesaurus Term: INDUSTRIAL management; Thesaurus Term: MANAGEMENT controls; Thesaurus Term: EXECUTIVE ability (Management); Thesaurus Term: RESEARCH; Thesaurus Term: QUANTITATIVE research; Subject Term: STUDY & teaching; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; Number of Pages: 13p; Illustrations: 1 Diagram, 6 Charts; Document Type: Article L3 - 10.2307/255450 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=4397352&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 1977-27520-001 AN - 1977-27520-001 AU - Parker, Kermit E. AU - Anchor, Kenneth N. AU - Weitz, Lawrence J. AU - Roback, Howard B. T1 - Experimental application of behavior modification strategems toward changing ethnocentric attitudes. JF - Social Behavior and Personality JO - Social Behavior and Personality JA - Soc Behav Pers Y1 - 1976/// VL - 4 IS - 2 SP - 187 EP - 192 CY - New Zealand PB - Society for Personality Research SN - 0301-2212 SN - 1179-6391 N1 - Accession Number: 1977-27520-001. Partial author list: First Author & Affiliation: Parker, Kermit E.; US Air Force Academy, Colorado Springs, CO. Release Date: 19771001. Correction Date: 20120430. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Attitude Change; Behavior Modification; Ethnocentrism; Reinforcement. Classification: Social Perception & Cognition (3040). Population: Human (10). Page Count: 6. Issue Publication Date: 1976. AB - Attempted to show that a change in ethnocentrism could be accomplished through the use of behavior modification techniques. 18 Caucasian undergraduates were divided into 3 control and 3 experimental groups. In 1 control and 1 experimental condition, Ss read anti-ethnocentric statements and attitude statements that were in opposition to each other. Experimental Ss were reinforced for reading certain anti-ethnocentric statements. Control Ss received no reinforcement no matter what statements they made. In a 2nd condition, Ss underwent a structured interview with experimental Ss being reinforced for anti-ethnocentric statements. Attitude change was determined by subtracting the pretest from the posttest scores on the Adorno et al Ethnocentrism Scale which was administered to all Ss. Results show that reinforcement was effective in producing attitude change. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - behavior modification KW - changing ethnocentric attitudes KW - college students KW - 1976 KW - Attitude Change KW - Behavior Modification KW - Ethnocentrism KW - Reinforcement KW - 1976 DO - 10.2224/sbp.1976.4.2.187 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1977-27520-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Shearer, Richard L. AU - Steger, Joseph A. T1 - Manpower Obsolescence: A New Definition and Empirical Investigation of Personal Variables. JO - Academy of Management Journal JF - Academy of Management Journal Y1 - 1975/06// VL - 18 IS - 2 M3 - Article SP - 263 EP - 275 PB - Academy of Management SN - 00014273 AB - Of twelve major determinants of managerial and technical job obsolescence, high need achievement and high levels of organizational participation were found to be the major contributors to nonobsolescence. Managerial obsolescence, as opposed to professional obsolescence, tended to depend more on experience and less on education. [ABSTRACT FROM AUTHOR] AB - Copyright of Academy of Management Journal is the property of Academy of Management and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MANPOWER KW - OBSOLESCENCE KW - LABOR supply KW - FACTORS of production KW - HUMAN capital KW - EXECUTIVES KW - MANAGEMENT KW - ORGANIZATIONAL behavior KW - EMPLOYMENT (Economic theory) KW - TECHNOLOGICAL obsolescence KW - EMPLOYMENT & education KW - EMPLOYEE motivation N1 - Accession Number: 4407757; Shearer, Richard L. 1; Steger, Joseph A. 2; Affiliations: 1: United States Air Force; 2: Rensselaer Polytechnic Institute; Issue Info: Jun75, Vol. 18 Issue 2, p263; Thesaurus Term: MANPOWER; Thesaurus Term: OBSOLESCENCE; Thesaurus Term: LABOR supply; Thesaurus Term: FACTORS of production; Thesaurus Term: HUMAN capital; Thesaurus Term: EXECUTIVES; Thesaurus Term: MANAGEMENT; Thesaurus Term: ORGANIZATIONAL behavior; Thesaurus Term: EMPLOYMENT (Economic theory); Thesaurus Term: TECHNOLOGICAL obsolescence; Thesaurus Term: EMPLOYMENT & education; Thesaurus Term: EMPLOYEE motivation; NAICS/Industry Codes: 561320 Temporary Help Services; Number of Pages: 13p; Illustrations: 3 Charts; Document Type: Article L3 - 10.2307/255529 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=4407757&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 1976-23512-001 AN - 1976-23512-001 AU - Prather, Dirk C. AU - Parker, Kermit E. AU - Thomas, Ronald L. T1 - Extinction and spontaneous recovery in positive reinforcement and avoidance learning. JF - Journal of General Psychology JO - Journal of General Psychology JA - J Gen Psychol Y1 - 1975/04// VL - 92 IS - 2 SP - 211 EP - 215 CY - US PB - Heldref Publications SN - 0022-1309 SN - 1940-0888 N1 - Accession Number: 1976-23512-001. Partial author list: First Author & Affiliation: Prather, Dirk C.; US Air Force Academy. Other Publishers: Taylor & Francis. Release Date: 19760901. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Avoidance Conditioning; Extinction (Learning); Positive Reinforcement; Rat Learning. Minor Descriptor: Rats. Classification: Learning & Motivation (2420). Population: Animal (20). Page Count: 5. Issue Publication Date: Apr, 1975. AB - Two groups of 14 male Charles River hooded rats each were either conditioned to barpress for food while a stimulus light was illuminated (Group R), or conditioned to avoid a .1 mA shock by barpressing when the light was illuminated (Group A). Ss were run until no significant difference existed in their total response rate in a 1-hr period. Ss were then extinguished. Total and correct responses were found to be significantly higher for Group R than for Group A. Spontaneous recovery rates, total and correct responses, were significantly higher for Group R. It is concluded that avoidance learning is extinguished faster and more completely than rewarded learning. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - positive reinforcement & avoidance learning KW - extinction & spontaneous recovery KW - male rats KW - 1975 KW - Avoidance Conditioning KW - Extinction (Learning) KW - Positive Reinforcement KW - Rat Learning KW - Rats KW - 1975 DO - 10.1080/00221309.1975.9710845 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1976-23512-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Keone, Robert M. T1 - POLICY SCIENCES AND CIVIL-MILITARY SYSTEMS. JO - Journal of Political & Military Sociology JF - Journal of Political & Military Sociology Y1 - 1975///Spring75 VL - 3 IS - 1 M3 - Article SP - 71 EP - 84 SN - 00472697 AB - Discusses policymaking and its relation to civil-military matters. KW - POLICY sciences KW - CIVIL-military relations KW - MILITARY sociology KW - SOCIAL sciences KW - POLICY analysis KW - POLITICAL science KW - POLICY AND DECISION‐MAKING N1 - Accession Number: 10422019; Keone, Robert M. 1; Affiliations: 1 : Colonel, United States Air Force.; Source Info: Spring75, Vol. 3 Issue 1, p71; Historical Period: 1950 to 1979; Subject Term: POLICY sciences; Subject Term: CIVIL-military relations; Subject Term: MILITARY sociology; Subject Term: SOCIAL sciences; Subject Term: POLICY analysis; Subject Term: POLITICAL science; Author-Supplied Keyword: POLICY AND DECISION‐MAKING; Number of Pages: 14p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ahl&AN=10422019&site=ehost-live&scope=site DP - EBSCOhost DB - ahl ER - TY - JOUR AU - Dowd, Patrick J. T1 - SLEEP DEPRIVATION EFFECTS ON THE VESTIBULAR HABITUATION PROCESS. JO - Journal of Applied Psychology JF - Journal of Applied Psychology Y1 - 1974/12// VL - 59 IS - 6 M3 - Article SP - 748 EP - 752 SN - 00219010 AB - The effects of sleep deprivation on habituation of the vestibular system in a stressful situation were examined. One hundred forty three experienced pilots were exposed to two tests of Coriolis acceleration after periods of sleep deprivation (24-30 hours) or rest (6 hours). Nystagmus responses to Coriolis stimulation were recorded after four right-to-left tilts. Sleep deprivation resulted in (a) increased sensitivity to Coriolis stimulation; (b) a decreased recovery rate; and consequently (c) interference with the vestibular habituation process. The implications of sleep loss in increasing the hazards of flying are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Psychology is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIR pilots KW - SLEEP deprivation KW - HABITUATION (Neuropsychology) KW - NYSTAGMUS KW - CORIOLIS force KW - STRESS (Physiology) KW - PSYCHOPHYSIOLOGY N1 - Accession Number: 12572036; Dowd, Patrick J. 1; Affiliations: 1: United States Air Force School of Aerospace Medicine, Brooks Air Force Base, Texas.; Issue Info: Dec74, Vol. 59 Issue 6, p748; Thesaurus Term: AIR pilots; Subject Term: SLEEP deprivation; Subject Term: HABITUATION (Neuropsychology); Subject Term: NYSTAGMUS; Subject Term: CORIOLIS force; Subject Term: STRESS (Physiology); Subject Term: PSYCHOPHYSIOLOGY; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12572036&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Taylor, Robert L. AU - Wilsted, William D. T1 - Capturing Judgment Policies: A Field Study of Performance Appraisal. JO - Academy of Management Journal JF - Academy of Management Journal Y1 - 1974/09// VL - 17 IS - 3 M3 - Article SP - 440 EP - 449 PB - Academy of Management SN - 00014273 AB - Mathematical models of judgment policy are compared in evaluating 625 performance reports during a single rating cycle. Linear and nonlinear analyses are used to describe the cues most important in determining overall ratings. In addition, performance rating policy is compared with stated policy for each of 40 raters. [ABSTRACT FROM AUTHOR] AB - Copyright of Academy of Management Journal is the property of Academy of Management and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMPLOYEES -- Rating of KW - MATHEMATICAL models KW - MANAGEMENT KW - DECISION making KW - CORPORATE governance KW - PERSONNEL management KW - PERFORMANCE evaluation KW - NEGOTIATION KW - PERFORMANCE KW - JUDGMENT (Psychology) KW - AIRMEN -- Training of KW - MILITARY aeronautics -- Study & teaching N1 - Accession Number: 4297353; Taylor, Robert L. 1; Wilsted, William D. 2; Affiliations: 1: United States Air Force Academy; 2: University of Colorado; Issue Info: Sep74, Vol. 17 Issue 3, p440; Thesaurus Term: EMPLOYEES -- Rating of; Thesaurus Term: MATHEMATICAL models; Thesaurus Term: MANAGEMENT; Thesaurus Term: DECISION making; Thesaurus Term: CORPORATE governance; Thesaurus Term: PERSONNEL management; Thesaurus Term: PERFORMANCE evaluation; Thesaurus Term: NEGOTIATION; Subject Term: PERFORMANCE; Subject Term: JUDGMENT (Psychology); Subject Term: AIRMEN -- Training of; Subject Term: MILITARY aeronautics -- Study & teaching; NAICS/Industry Codes: 541612 Human Resources Consulting Services; NAICS/Industry Codes: 923130 Administration of Human Resource Programs (except Education, Public Health, and Veterans' Affairs Programs); Number of Pages: 10p; Illustrations: 2 Diagrams, 4 Charts; Document Type: Article L3 - 10.2307/254648 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=4297353&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Caswell, W.M. AU - Rao, A. T1 - A PRACTICAL APPROACH TO THE LARGE-SCALE FOREST SCHEDULING PROBLEM. JO - Decision Sciences JF - Decision Sciences Y1 - 1974/07// VL - 5 IS - 3 M3 - Article SP - 364 EP - 373 SN - 00117315 AB - A large-scale forest cutting schedule problem involving 1166 forest units to be cut over a 24-year planning period is discussed. The problem is formulated as a generalized version of the basic transportation problem. The conversion procedure for such a problem to the standard transportation format is outlined. The proposed approach is then compared with a linear programming decomposition approach on the basis of operating results obtained and computer time required by each approach. It is shown that this new approach will solve a real world problem about 40 times faster than the usual linear programming decomposition approach. [ABSTRACT FROM AUTHOR] AB - Copyright of Decision Sciences is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FORESTS & forestry KW - PRODUCTION scheduling KW - OPERATIONS research KW - LINEAR programming KW - DECISION making KW - PROBLEM solving N1 - Accession Number: 4998633; Caswell, W.M. 1; Rao, A. 2; Affiliations: 1: United States Air Force; 2: Canada Packerts Limited; Issue Info: Jul74, Vol. 5 Issue 3, p364; Thesaurus Term: FORESTS & forestry; Thesaurus Term: PRODUCTION scheduling; Thesaurus Term: OPERATIONS research; Thesaurus Term: LINEAR programming; Thesaurus Term: DECISION making; Thesaurus Term: PROBLEM solving; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; Number of Pages: 10p; Illustrations: 1 Diagram; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=4998633&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 1975-00135-001 AN - 1975-00135-001 AU - Berry, Gene A. AU - Prather, Dirk C. AU - Bermudez, John M. T1 - Differential effects of verbal mediation on learning and transfer of a complex perceptual skill. JF - Perceptual and Motor Skills JO - Perceptual and Motor Skills JA - Percept Mot Skills Y1 - 1974/06// VL - 38 IS - 3, Pt 2 SP - 1239 EP - 1242 CY - US PB - Perceptual & Motor Skills SN - 0031-5125 SN - 1558-688X N1 - Accession Number: 1975-00135-001. Other Journal Title: Perceptual & Motor Skills Research Exchange. Partial author list: First Author & Affiliation: Berry, Gene A.; US Air Force Academy. Other Publishers: Sage Publications. Release Date: 19750101. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Cognitive Mediation; Transfer (Learning); Verbal Communication. Classification: Human Experimental Psychology (2300). Population: Human (10). Page Count: 4. Issue Publication Date: Jun, 1974. AB - Gave a range estimation task to 4 groups of 60 male undergraduates. One group learned the task by trial-and-error methods using performance feedback, and a 2nd group learned by trial-and-error but were required to verbalize their perceptions of target size. A 3rd group was given a strong prompt on training trials but no feedback, and a 4th group were given the prompt and required to verbalize their perceptions of target size. Verbalization caused a significant decrement in performance on transfer of the skill. The trial-and-error group's performance was significantly better than that of the other 3 groups. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - verbal mediation KW - learning & transfer of complex perceptual skill KW - college students KW - 1974 KW - Cognitive Mediation KW - Transfer (Learning) KW - Verbal Communication KW - 1974 DO - 10.2466/pms.1974.38.3c.1239 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1975-00135-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 1976-00341-001 AN - 1976-00341-001 AU - Galluscio, Eugene H T1 - Changes in rat brain morphology and adrenal size as a function of environmental stress. JF - Journal of Biological Psychology JO - Journal of Biological Psychology Y1 - 1974/// VL - 16 IS - 2 SP - 26 EP - 31 CY - US PB - Journal of Biological Psychology N1 - Accession Number: 1976-00341-001. Partial author list: First Author & Affiliation: Galluscio, Eugene H; US Air Force Academy. et al. Release Date: 19760101. Publication Type: Journal (0100), Peer-Reviewed Status-Unknown (0130). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Adrenal Glands; Brain Size; Brain Weight; Environmental Stress; Morphology. Minor Descriptor: Brain; Rats. Classification: Physiological Processes (2540). Population: Animal (20). Page Count: 6. Issue Publication Date: 1974. AB - 28 male albino Sprague-Dawley rats were subjected to chronic controlled environmental stress (CES) and uncontrolled environmental stress (UES). The CES Ss could avoid or escape a footshock by a lever press in an operant conditioning chamber. Footshock for the UES Ss was controlled by the CES Ss to which they were yoked. The CES condition significantly increased adrenal gland weight but the UES condition did not. UES tended to decrease occipital and sensory-motor cortex thickness, but CES did not affect cortical thickness. The 2 stress conditions had opposite effects on the anterior hypothalamus; CES tended to increase and UES to decrease anterior hypothalamic size. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - environmental stress KW - changes in brain morphology & adrenal size KW - male albino rats KW - 1974 KW - Adrenal Glands KW - Brain Size KW - Brain Weight KW - Environmental Stress KW - Morphology KW - Brain KW - Rats KW - 1974 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=1976-00341-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Burt, David N. T1 - Stretching Your Building Dollar. JO - California Management Review JF - California Management Review Y1 - 1973///Summer73 VL - 15 IS - 4 M3 - Article SP - 54 EP - 60 PB - California Management Review SN - 00081256 AB - It is surprising how little sound guidance is available to the corporate official who is about to acquire costly new facilities. In this article, five approaches to purchasing building construction are described and their cost and time attributes and relative advantages are analyzed. [ABSTRACT FROM AUTHOR] AB - Copyright of California Management Review is the property of California Management Review and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONSTRUCTION industry KW - CONSTRUCTION spending KW - ESTIMATES KW - CONSTRUCTION contracts KW - TIME management KW - COST effectiveness KW - PURCHASING KW - INFLATION (Finance) KW - CONSTRUCTION industry -- Costs KW - CONTRACTORS KW - PRICING KW - BUILDING KW - ECONOMIC aspects KW - UNITED States N1 - Accession Number: 5049151; Burt, David N. 1,2; Affiliations: 1: Major, United States Air Force; 2: Assistant Professor of Logistics Management, Air Force Institute of Technology; Issue Info: Summer73, Vol. 15 Issue 4, p54; Thesaurus Term: CONSTRUCTION industry; Thesaurus Term: CONSTRUCTION spending; Thesaurus Term: ESTIMATES; Thesaurus Term: CONSTRUCTION contracts; Thesaurus Term: TIME management; Thesaurus Term: COST effectiveness; Thesaurus Term: PURCHASING; Thesaurus Term: INFLATION (Finance); Thesaurus Term: CONSTRUCTION industry -- Costs; Thesaurus Term: CONTRACTORS; Thesaurus Term: PRICING; Subject Term: BUILDING; Subject Term: ECONOMIC aspects; Subject: UNITED States; NAICS/Industry Codes: 236110 Residential building construction; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=5049151&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Cammalleri, Joseph A. AU - Hendrick, Hal W. AU - Pittman Jr., Wayne C. AU - Blout, Harry D. AU - Prather, Dirk C. T1 - EFFECTS OF DIFFERENT LEADERSHIP STYLES ON GROUP ACCURACY. JO - Journal of Applied Psychology JF - Journal of Applied Psychology Y1 - 1973/02// VL - 57 IS - 1 M3 - Article SP - 32 EP - 37 SN - 00219010 AB - Variables of Fiedler's Contingency Model were manipulated in a group-problem-solving situation. Subjects made private individual estimates of rank-order merit of survival items and subsequently were placed in 48 groups of 4 or 5 to arrive at consensual estimates. Leaders had been contacted earlier, given the solution, and told to assume specific roles: Type I (high accuracy/authoritarian) ; Type II (high accuracy/democratic) ; Type III (low accuracy/authoritarian); Type IV (low accuracy/democratic). Type I produced the highest accuracy, Types II and IV had intermediate and comparable accuracy, and Type III produced the lowest accuracy. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Psychology is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEADERSHIP KW - EXECUTIVE ability (Management) KW - MANAGEMENT styles KW - MANAGEMENT KW - CORPORATE culture KW - DELEGATION of authority KW - WORK environment KW - INDUSTRIAL management KW - PERSONNEL management N1 - Accession Number: 5831128; Cammalleri, Joseph A. 1; Hendrick, Hal W. 1; Pittman Jr., Wayne C. 1; Blout, Harry D. 1; Prather, Dirk C. 1; Affiliations: 1: United States Air Force Academy; Issue Info: Feb73, Vol. 57 Issue 1, p32; Thesaurus Term: LEADERSHIP; Thesaurus Term: EXECUTIVE ability (Management); Thesaurus Term: MANAGEMENT styles; Thesaurus Term: MANAGEMENT; Thesaurus Term: CORPORATE culture; Thesaurus Term: DELEGATION of authority; Thesaurus Term: WORK environment; Thesaurus Term: INDUSTRIAL management; Thesaurus Term: PERSONNEL management; NAICS/Industry Codes: 923130 Administration of Human Resource Programs (except Education, Public Health, and Veterans' Affairs Programs); NAICS/Industry Codes: 541612 Human Resources Consulting Services; Number of Pages: 6p; Illustrations: 3 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=5831128&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Hogan, William T1 - Directional Derivatives for Extremal-Value Functions with Applications to the Completely Convex Case. JO - Operations Research JF - Operations Research Y1 - 1973/01//Jan/Feb73 VL - 21 IS - 1 M3 - Article SP - 188 EP - 209 PB - INFORMS: Institute for Operations Research SN - 0030364X AB - Several techniques in mathematical programming involve the constrained optimization of an extremal-value function. Such functions are defined as the extremal value of a related parameterized optimization problem. This paper reviews and extends the characterization of directional derivatives for three major types of extremal-value functions. The characterization for the completely convex case is then used to construct a robust and convergent feasible direction algorithm. Such an algorithm has applications to the optimization of large-scale nonlinear decomposable systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Operations Research is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL programming KW - MATHEMATICAL optimization KW - CONVEX functions KW - EXTREMAL problems (Mathematics) KW - REAL variables KW - FUNCTIONAL equations KW - CALCULUS of variations KW - GEOMETRIC function theory N1 - Accession Number: 8735775; Hogan, William 1; Affiliations: 1: United States Air Force Academy, Colorado; Issue Info: Jan/Feb73, Vol. 21 Issue 1, p188; Thesaurus Term: MATHEMATICAL programming; Thesaurus Term: MATHEMATICAL optimization; Subject Term: CONVEX functions; Subject Term: EXTREMAL problems (Mathematics); Subject Term: REAL variables; Subject Term: FUNCTIONAL equations; Subject Term: CALCULUS of variations; Subject Term: GEOMETRIC function theory; Number of Pages: 22p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=8735775&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Hogan, William W. AU - United States Air Force Academy, Colorado T1 - The Continuity of the Perturbation Function of a Convex Program. JO - Operations Research JF - Operations Research Y1 - 1973/01//Jan/Feb73 VL - 21 IS - 1 M3 - Article SP - 351 EP - 352 PB - INFORMS: Institute for Operations Research SN - 0030364X AB - The perturbation function of a convex program is not necessarily continuous on its domain of finiteness. However, further restrictions on the constraints with guarantee a continuous perturbation function. [ABSTRACT FROM AUTHOR] AB - Copyright of Operations Research is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL programming KW - APPROXIMATION theory KW - FUNCTIONAL analysis KW - CONTINUITY KW - PERTURBATION (Mathematics) KW - CONVEX programming KW - DYNAMICS KW - MATHEMATICAL physics N1 - Accession Number: 17304566; Hogan, William W. 1; United States Air Force Academy, Colorado 1; Affiliations: 1: United States Air Force Academy, Colorado; Issue Info: Jan/Feb73, Vol. 21 Issue 1, p351; Thesaurus Term: MATHEMATICAL programming; Thesaurus Term: APPROXIMATION theory; Thesaurus Term: FUNCTIONAL analysis; Subject Term: CONTINUITY; Subject Term: PERTURBATION (Mathematics); Subject Term: CONVEX programming; Subject Term: DYNAMICS; Subject Term: MATHEMATICAL physics; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=17304566&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Prather, Dirk C. AU - Berry, Gene A. AU - Jones, Gerald L. T1 - THE TRAINING OF A PERCEPTUAL SKILL BY EITHER REWARDING OR AVERSIVE FEEDBACK COMPARED ON EFFICIENCY, TRANSFER, AND STRESS. JO - Journal of Applied Psychology JF - Journal of Applied Psychology Y1 - 1972/12// VL - 56 IS - 6 M3 - Article SP - 514 EP - 516 SN - 00219010 AB - Forty male students at the United States Air Force Academy were trained on a range-estimation task. The Ss were randomly assigned to either Group RFB, those given feedback by their actual range plus a verbal reinforcer if they were within a given range, or Group SFB, those given feedback by their actual range plus a 60 volt electric shock if they were outside the given range. The learning curves showed no differences in the groups during training. After training to asymptote, there were no significant differences on the transfer variable, but Group SFB's performance was superior under stress (p < .05). The results were discussed in reference to the possibility of training resistance to stress. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Psychology is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TASK performance KW - FEEDBACK (Psychology) KW - COMPARATIVE studies KW - PERCEPTUAL learning KW - ABILITY testing KW - RANGE management KW - STUDENTS -- United States N1 - Accession Number: 12424281; Prather, Dirk C. 1; Berry, Gene A. 1; Jones, Gerald L. 1; Affiliations: 1: United States Air Force Academy.; Issue Info: Dec72, Vol. 56 Issue 6, p514; Thesaurus Term: TASK performance; Subject Term: FEEDBACK (Psychology); Subject Term: COMPARATIVE studies; Subject Term: PERCEPTUAL learning; Subject Term: ABILITY testing; Subject Term: RANGE management; Subject Term: STUDENTS -- United States; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12424281&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Holloman, Charles R. AU - Hendrick, Hal W. T1 - EFFECTS OF STATUS AND INDIVIDUAL ABILITY ON GROUP PROBLEM SOLVING. JO - Decision Sciences JF - Decision Sciences Y1 - 1972/10// VL - 3 IS - 4 M3 - Article SP - 55 EP - 63 SN - 00117315 AB - This study investigated the influence of status and ability differences upon the quality of group problem solving. Participants in eight sections (N=113) of an advanced leadership course ranked each other in terms of perceived influence exercised within their section. Each section was then selectively subdivided into groups of five to seven members each. On a problem-solving task, the ability of high-status members to influence other group members was significantly greater (p<.01) when those persons immediately below them in the status hierarchy of their section were not with them in the problem-solving group. [ABSTRACT FROM AUTHOR] AB - Copyright of Decision Sciences is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GROUP problem solving KW - PROBLEM solving KW - GROUP decision making KW - LEADERSHIP KW - DECISION making KW - MANAGEMENT science KW - SOCIAL interaction N1 - Accession Number: 4987973; Holloman, Charles R. 1; Hendrick, Hal W. 2; Affiliations: 1: Virginia Polytechnic Institute and State University; 2: United States Air Force Academy; Issue Info: Oct72, Vol. 3 Issue 4, p55; Thesaurus Term: GROUP problem solving; Thesaurus Term: PROBLEM solving; Thesaurus Term: GROUP decision making; Thesaurus Term: LEADERSHIP; Thesaurus Term: DECISION making; Thesaurus Term: MANAGEMENT science; Subject Term: SOCIAL interaction; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=4987973&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Holloman, Charles R. AU - Hendrick, Hal W. T1 - Adequacy of Group Decisions as a Function of the Decision-Making Process. JO - Academy of Management Journal JF - Academy of Management Journal Y1 - 1972/06// VL - 15 IS - 2 M3 - Article SP - 175 EP - 184 PB - Academy of Management SN - 00014273 AB - This study investigated the relative adequacy of six modes of group decision-making: (1) Averaged Decision, (2) Leader Decision, (3) Committee Decision, (4) Majority Vote, (5) Consensus, and (6) Consensus after Majority Vote. Increases in decision adequacy occur when groups use procedures which permit the direct participation of more of the group members. [ABSTRACT FROM AUTHOR] AB - Copyright of Academy of Management Journal is the property of Academy of Management and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GROUP decision making KW - ORGANIZATIONAL behavior KW - GROUP problem solving KW - DECISION making KW - PROBLEM solving KW - TEAMS in the workplace KW - MAJORITY groups -- Attitudes KW - SOCIAL participation KW - SOCIAL groups KW - SOCIAL processes N1 - Accession Number: 4499064; Holloman, Charles R. 1; Hendrick, Hal W. 2; Affiliations: 1: Virginia Polytechnic Institute and State University; 2: United States Air Force Academy; Issue Info: Jun72, Vol. 15 Issue 2, p175; Thesaurus Term: GROUP decision making; Thesaurus Term: ORGANIZATIONAL behavior; Thesaurus Term: GROUP problem solving; Thesaurus Term: DECISION making; Thesaurus Term: PROBLEM solving; Thesaurus Term: TEAMS in the workplace; Subject Term: MAJORITY groups -- Attitudes; Subject Term: SOCIAL participation; Subject Term: SOCIAL groups; Subject Term: SOCIAL processes; Number of Pages: 10p; Document Type: Article L3 - 10.2307/254909 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=4499064&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Holloman, Charles R. AU - Hendrick, Hal W. T1 - PROBLEM SOLVING IN DIFFERENT SIZED GROUPS. JO - Personnel Psychology JF - Personnel Psychology Y1 - 1971/09// VL - 24 IS - 3 M3 - Article SP - 489 EP - 500 PB - Wiley-Blackwell SN - 00315826 AB - The article determines whether larger or smaller groups make better decisions. The data have shown that group interaction contributes to an increase in decision adequacy. The extent to which a group decision will benefit from the possible effects of interaction is significantly related to the size of the group. Groups of 6 were found to be more accurate than groups of 3 and groups of 9, but did not differ from groups of 12 and groups of 15. Questions about the optimum size of problem-solving groups when the criterion of performance is a. single best solution should be decided in terms of both the quality of decisions and economy. While groups of 6, 12, and 15 were equal in accuracy, considerations of economy point to the use of groups of approximately 6. KW - DECISION making KW - PROBLEM solving KW - GROUP decision making KW - ORGANIZATIONAL behavior KW - TEAMS in the workplace KW - MANAGEMENT KW - CONFLICT management KW - CRISIS management KW - CRITICAL thinking N1 - Accession Number: 6267959; Holloman, Charles R. 1,2; Hendrick, Hal W. 1; Affiliations: 1: United States Air Force Academy; 2: Virginia Polytechnic Institute and State University; Issue Info: Autumn1971, Vol. 24 Issue 3, p489; Thesaurus Term: DECISION making; Thesaurus Term: PROBLEM solving; Thesaurus Term: GROUP decision making; Thesaurus Term: ORGANIZATIONAL behavior; Thesaurus Term: TEAMS in the workplace; Thesaurus Term: MANAGEMENT; Thesaurus Term: CONFLICT management; Thesaurus Term: CRISIS management; Subject Term: CRITICAL thinking; NAICS/Industry Codes: 922190 Other Justice, Public Order, and Safety Activities; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=6267959&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR TY - GEN AU - Pike, B. F.; AU - Phillippi, P. J.; AU - Lawson, E. H., Jr.; T1 - Soap colitis CT - Soap colitis JO - New England Journal of Medicine (USA) JF - New England Journal of Medicine (USA) Y1 - 1971/07/22/ VL - 285 IS - Jul 22 SP - 217 EP - 218 SN - 00284793 AD - reprints: Department of Medicine, United States Air Force Regional Hospital, MacDill Air Force Base, Florida 33608 N1 - Accession Number: 8-4381; Language: English; References: 5; Journal Coden: NEJMAG; Human Indicator: Yes; Section Heading: Toxicity; Abstract Author: Joan Lentine N2 - Problems may occur with the use of soap enemas in obstetric units. A case study of a 23-year-old woman who was administered a soapsuds enema after being admitted to the delivery room in active labor at full-term is presented. The patient continued to suffer side effects of this enema for approximately one month after administration. The literature reveals that patients have experienced rectal irritation that has lasted as long as 3 weeks after soap enemas had been administered. There are also reports of anaphylaxis, rectal gangrene and serious serosanguineous fluid loss secondary to acute colitis after soap enema administration. KW - Toxicity--enemas--soaps, in humans; KW - Soaps--enemas--toxicity, in humans; KW - Enemas--soaps--toxicity, in humans; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ipa&AN=8-4381&site=ehost-live&scope=site DP - EBSCOhost DB - ipa ER - TY - JOUR AU - MASON, R. HAL AU - HARRIS, JEROME AU - McLOUGHLIN, JOHN T1 - CORPORATE STRATEGY: A Point of View. JO - California Management Review JF - California Management Review Y1 - 1971///Spring71 VL - 13 IS - 3 M3 - Article SP - 5 EP - 12 PB - California Management Review SN - 00081256 AB - This article presents corporate strategy as the science and art of employing business resources to secure objectives, with emphasis on adjustment to a competitive environment. Two conceptual schemes are offered evaluating the corporate role and corporate success in relation to the scientific allocation of resources and bargaining and inter-group trade-off of resources. [ABSTRACT FROM AUTHOR] AB - Copyright of California Management Review is the property of California Management Review and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRATEGIC planning KW - ORGANIZATIONAL goals KW - DECISION making KW - ENVIRONMENTAL scanning (Business) KW - RESOURCE allocation KW - RATIONAL choice theory KW - BUSINESS planning KW - RESOURCE-based theory of the firm KW - KNOWLEDGE-based theory of the firm KW - FRAMES (Social sciences) N1 - Accession Number: 5049528; MASON, R. HAL 1; HARRIS, JEROME; McLOUGHLIN, JOHN 2; Affiliations: 1: Associate Professor of Management, University of California, Los Angeles; 2: Transportation Officer, United States Air Force; Issue Info: Spring71, Vol. 13 Issue 3, p5; Thesaurus Term: STRATEGIC planning; Thesaurus Term: ORGANIZATIONAL goals; Thesaurus Term: DECISION making; Thesaurus Term: ENVIRONMENTAL scanning (Business); Thesaurus Term: RESOURCE allocation; Thesaurus Term: RATIONAL choice theory; Thesaurus Term: BUSINESS planning; Thesaurus Term: RESOURCE-based theory of the firm; Thesaurus Term: KNOWLEDGE-based theory of the firm; Subject Term: FRAMES (Social sciences); Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=5049528&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR TY - GEN AU - Carmel, R.; AU - Coltman, C. A., Jr.; T1 - Serum vitamin B\IF/12 \BS/binding capacity and muramidase changes with cyclic neutropenia induced by cytosine arabinoside CT - Serum vitamin B\IF/12 \BS/binding capacity and muramidase changes with cyclic neutropenia induced by cytosine arabinoside JO - Blood JF - Blood Y1 - 1971/01/01/ VL - 37 IS - Jan SP - 31 EP - 39 AD - Hematology-Oncology Service, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas N1 - Accession Number: 8-1389; Language: English; Trade Name: Cytosine arabinsoide; Generic Name: Cytarabine; Chemical Name: Cytarabine--147-94-4; Therapeutic Class: (10:00); AHFS Class: Antineoplastic agents cytarabine; References: 37; Journal Coden: BLOOAW; Human Indicator: Yes; Section Heading: Toxicity; Abstract Author: Jimmie L. Hall N2 - This article describes hematological studies made on a patient with acute myeloblastic leukemia who was in a cytarabine-induced and maintained remission. KW - Cytarabine--effects-; KW - Antineoplastic agents--cytarabine--effects, hematological, case report; KW - Toxicity studies--cytarabine--effects, hematological, case report; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ipa&AN=8-1389&site=ehost-live&scope=site DP - EBSCOhost DB - ipa ER - TY - JOUR AU - Kastens, Merritt L. T1 - "DR. MEAD, COULD YOU COME HERE A MINUTE?". JO - Interfaces JF - Interfaces Y1 - 1970/11// VL - 1 IS - 1 M3 - Article SP - 2 EP - 7 PB - INFORMS: Institute for Operations Research SN - 00922102 AB - Questions the neglect of the fundamental principles of management by organizations. Views on today's managers; Discussion on practical management; Opinion on the cultural definition of management. KW - MANAGEMENT KW - ORGANIZATION KW - MANAGEMENT science KW - EXECUTIVES KW - INDUSTRIAL relations KW - CONFLICT management N1 - Accession Number: 6693122; Kastens, Merritt L. 1,2,3,4,5; Affiliations: 1: Director, Manager Learning Center, American Foundation for Management Research, American Management Association.; 2: Manager, Project Planning and Analysis Department and Manager of Market Research, Union Carbide International Company.; 3: Assistant Director, Stanford Research Institute.; 4: Associate Editor, American Chemical Society Applied Publications.; 5: Advisor, National Science Foundation, the United States Air Force, the United States Senate Committee on Government Reorganization and the Solar Energy Society.; Issue Info: Nov1970, Vol. 1 Issue 1, p2; Thesaurus Term: MANAGEMENT; Thesaurus Term: ORGANIZATION; Thesaurus Term: MANAGEMENT science; Thesaurus Term: EXECUTIVES; Thesaurus Term: INDUSTRIAL relations; Thesaurus Term: CONFLICT management; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ent&AN=6693122&site=ehost-live&scope=site DP - EBSCOhost DB - ent ER - TY - JOUR AU - Patton, Orin C. T1 - TERRITORIAL BASES OF REVOLUTION. JO - Annals of the Association of American Geographers JF - Annals of the Association of American Geographers Y1 - 1970/09// VL - 60 IS - 3 M3 - Article SP - 598 EP - 600 PB - Taylor & Francis Ltd SN - 00045608 AB - In the book "The Insurgent State: Territorial Bases of Revolution," by Robert W. McColl has served the very useful purpose of focusing attention on the territorial and spatial aspects of insurgent revolutions. Much of the literature in the field of revolution is concerned with political or socio economic factors, or has such a heavy ideological and polemical content that the essential spatial elements are often overlooked. The growing body of research on revolutionary behavior and the use of violence for political and social purposes tends to be concentrated, not unexpectedly, at the higher levels of spatial aggregation. Nations are treated as points in space, and environments are apparently assumed to be homogeneous over large areas approach. KW - Geography KW - Earth sciences KW - Literature KW - Practical politics KW - Information services KW - Insurgent State: Territorial Bases of Revolution, The (Book) N1 - Accession Number: 12949717; Patton, Orin C. 1; Affiliations: 1: Associate Professor of Geography, United States Air Force Academy, Colorado; Issue Info: Sep70, Vol. 60 Issue 3, p598; Thesaurus Term: Geography; Thesaurus Term: Earth sciences; Subject Term: Literature; Subject Term: Practical politics; Subject Term: Information services; Reviews & Products: Insurgent State: Territorial Bases of Revolution, The (Book); NAICS/Industry Codes: 519190 All Other Information Services; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=eih&AN=12949717&site=ehost-live&scope=site DP - EBSCOhost DB - eih ER - TY - JOUR AU - Gilster, Herman L. T1 - A STATISTICAL ANALYSIS OF AIRCRAFT MAINTENANCE COSTS. JO - Operations Research JF - Operations Research Y1 - 1970///Fall70 Supplenment 2 VL - 18 IS - 5 M3 - Article SP - 904 EP - 917 PB - INFORMS: Institute for Operations Research SN - 0030364X AB - This paper outlines the merits of the recursive regression model in analyzing aircraft-failure and manhour-cost data. The parameters of this model are estimated from maintenance data generated by the entire Boeing B-52 fleet during the period August 1965 to August 1966. Failure rates and manhours of repair are found to be a significant function of the calendar age of the aircraft, the length of the missions flown, the time spent in low-altitude flight, and the technological developments in newer aircraft. The estimated parameters are used to develop a marginal cost analysis that can be used by the decision maker in evaluating his maintenance operation. Although the paper is based on a specific military operation, the method outlined can be used to determine maintenance costs for any large jet aircraft. [ABSTRACT FROM AUTHOR] AB - Copyright of Operations Research is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES KW - COST KW - REGRESSION analysis KW - MAINTENANCE KW - MAINTENANCE & repair KW - FLIGHT KW - MILITARY art & science N1 - Accession Number: 8798462; Gilster, Herman L. 1; Affiliations: 1: United States Air Force Academy, Colorado.; Issue Info: Fall70 Supplenment 2, Vol. 18 Issue 5, p904; Thesaurus Term: AIRPLANES; Thesaurus Term: COST; Thesaurus Term: REGRESSION analysis; Thesaurus Term: MAINTENANCE; Subject Term: MAINTENANCE & repair; Subject Term: FLIGHT; Subject Term: MILITARY art & science; NAICS/Industry Codes: 488190 Other Support Activities for Air Transportation; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 14p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=8798462&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Waespy, Charles M. T1 - LINEAR-PROGRAMMING SOLUTIONS FOR ORBITAL-TRANSFER TRAJECTORIES. JO - Operations Research JF - Operations Research Y1 - 1970/07//Jul/Aug70 VL - 18 IS - 4 M3 - Article SP - 635 EP - 653 PB - INFORMS: Institute for Operations Research SN - 0030364X AB - This paper describes how the relatively efficient computational techniques of linear programming can be used to obtain near-minimum fuel solutions to the problem of controlling spacecraft midcourse or terminal homing trajectories. These 'orbital-transfer' maneuvers are required (a) to bring a spacecraft to a prespecified position, velocity, and time state so that its subsequent free-fall trajectory follows a desired path, or (b) to match the position and velocity of another orbiting spacecraft in order to achieve a rendezvous or station-keeping condition. Modern optimal control theory has provided means by which the necessary (and in some cases, sufficient) conditions for the optimal control function for this problem can be derived. However, each method leads to subsidiary computational requirements that have proved troublesome in practice. In view of the computational demands of optimal control theory, it appears worthwhile to study how the computational power of linear programming can be brought to bear. Therefore, this paper applies linear programming (LP) methods to the terminal guidance of an orbiting spacecraft. Typical trajectories based on linearized equations of motion are calculated. Under the assumptions made, the LP solutions minimize fuel consumption. Attention is also called to current research that is beginning to provide a more profound interconnection between optimal control theory and the mathematical programming techniques familiar to operations research and management science. [ABSTRACT FROM AUTHOR] AB - Copyright of Operations Research is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR programming KW - CONTROL theory (Mathematics) KW - DYNAMIC programming KW - PROCESS control KW - OPERATIONS research KW - SPACE trajectories N1 - Accession Number: 8736135; Waespy, Charles M. 1; Affiliations: 1: Headquarters, United States Air Force, Washington, D.C.; Issue Info: Jul/Aug70, Vol. 18 Issue 4, p635; Thesaurus Term: NONLINEAR programming; Thesaurus Term: CONTROL theory (Mathematics); Thesaurus Term: DYNAMIC programming; Thesaurus Term: PROCESS control; Thesaurus Term: OPERATIONS research; Subject Term: SPACE trajectories; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; Number of Pages: 19p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=8736135&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - NEWS AU - WILSON, COLONEL HARRY A. T1 - THE MODERN TOWER OF BABEL. JO - Academy of Management Journal JF - Academy of Management Journal Y1 - 1970/06// VL - 13 IS - 2 M3 - Editorial SP - 208 EP - 209 PB - Academy of Management SN - 00014273 AB - The article reports the author's opinions regarding a U.S. Air Force conference held at the Air Academy. The author focuses on difficulties he had understanding some of the language used by speakers at the conference. It is suggested that the current usage of acronyms, abbreviations, and initials within the U.S. Air Force is creating a situation comparable to that of the Biblical story of the Tower of Babel. KW - JARGON (Terminology) KW - CONFERENCES & conventions KW - TOWER of Babel KW - CONFUSION of tongues KW - SOCIAL aspects KW - ACRONYMS KW - UNITED States -- Armed Forces KW - MILITARY officers KW - LANGUAGE & culture KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 19209941; WILSON, COLONEL HARRY A. 1; Affiliations: 1: United States Air Force Security Service; Issue Info: Jun70, Vol. 13 Issue 2, p208; Thesaurus Term: JARGON (Terminology); Thesaurus Term: CONFERENCES & conventions; Subject Term: TOWER of Babel; Subject Term: CONFUSION of tongues; Subject Term: SOCIAL aspects; Subject Term: ACRONYMS; Subject Term: UNITED States -- Armed Forces; Subject Term: MILITARY officers; Subject Term: LANGUAGE & culture; Subject: UNITED States ; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 561920 Convention and Trade Show Organizers; NAICS/Industry Codes: 928110 National Security; Number of Pages: 2p; Document Type: Editorial L3 - 10.2307/255107 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=19209941&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Sheard, James L. T1 - INTRASUBJECT PREDICTION OF PREFERENCES FOR ORGANIZATION TYPES. JO - Journal of Applied Psychology JF - Journal of Applied Psychology Y1 - 1970/06// VL - 54 IS - 3 M3 - Article SP - 248 EP - 252 SN - 00219010 AB - Intrasubject predictions of preferences for six types of work organizations were based upon predictor variables (a) the sum of the products of importance times attainability of work goals, and (b) the sum of attainability of work goals. The inclusion of importance as a multiplier did not significantly improve prediction and suggests the need for further research on the appropriateness of the multiplicative model for organizational choice preferences and decisions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Psychology is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WORK structure KW - JOB satisfaction KW - MERIT ratings KW - CHOICE (Psychology) KW - GOAL (Psychology) KW - APPLIED psychology N1 - Accession Number: 12494543; Sheard, James L. 1; Affiliations: 1: School of Systems and Logistics United States Air Force.; Issue Info: Jun70, Vol. 54 Issue 3, p248; Thesaurus Term: WORK structure; Thesaurus Term: JOB satisfaction; Thesaurus Term: MERIT ratings; Subject Term: CHOICE (Psychology); Subject Term: GOAL (Psychology); Subject Term: APPLIED psychology; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12494543&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Armitage, John V. T1 - ALLOCATION OF SORTIES IN AIR INTERDICTION. JO - Operations Research JF - Operations Research Y1 - 1970/05//May/Jun70 VL - 18 IS - 3 M3 - Article SP - 483 EP - 496 PB - INFORMS: Institute for Operations Research SN - 0030364X AB - This paper analyzes the problem of air interdiction in a simplified 'hostile country' in which the flow of interdicted material is entirely unidirectional. The action is assumed to be constrained by a minimum tour-survival probability. Results are presented that permit the existence of feasible solutions of the constrained problem to be determined, that solve the problem completely in the unconstrained case, and that enable optimal solutions to be determined in the constrained case (but only when the probability-of-loss function p(x) is a step function). [ABSTRACT FROM AUTHOR] AB - Copyright of Operations Research is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESOURCE allocation KW - MATHEMATICS KW - AIR interdiction KW - AIR warfare KW - MILITARY strategy KW - MILITARY tactics N1 - Accession Number: 8604747; Armitage, John V. 1; Affiliations: 1: Headquarters, United States Air Force, Washington, D.C.; Issue Info: May/Jun70, Vol. 18 Issue 3, p483; Thesaurus Term: RESOURCE allocation; Thesaurus Term: MATHEMATICS; Subject Term: AIR interdiction; Subject Term: AIR warfare; Subject Term: MILITARY strategy; Subject Term: MILITARY tactics; Number of Pages: 14p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=8604747&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Martinelli, Patrick A. T1 - Can Marketing Theory Be Developed Through the Study of Social Institutions? JO - Journal of Marketing JF - Journal of Marketing Y1 - 1969/04// VL - 33 IS - 2 M3 - Article SP - 60 EP - 62 PB - American Marketing Association SN - 00222429 AB - This article suggests two important considerations and a perspective necessary to build a general theory of marketing. The perspective suggested is based on the realization that marketing is a social institution encompassing a particular set of behavior patterns directed toward meeting human consumption needs. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Marketing is the property of American Marketing Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Marketing KW - Consumers KW - Social structure KW - Sociology KW - Marketing theory KW - Social institutions KW - Consumption (Economics) KW - Social systems KW - Human behavior KW - Theory KW - Social functions KW - Management science N1 - Accession Number: 4997040; Martinelli, Patrick A. 1; Affiliations: 1: Major, Air force assigned United States Air Force Academy in Colorado, Associate Professor of Economics.; Issue Info: Apr1969, Vol. 33 Issue 2, p60; Thesaurus Term: Marketing; Thesaurus Term: Consumers; Thesaurus Term: Social structure; Thesaurus Term: Sociology; Subject Term: Marketing theory; Subject Term: Social institutions; Subject Term: Consumption (Economics); Subject Term: Social systems; Subject Term: Human behavior; Subject Term: Theory; Subject Term: Social functions; Subject Term: Management science; NAICS/Industry Codes: 541613 Marketing Consulting Services; Number of Pages: 3p; Illustrations: 1 Black and White Photograph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=ufh&AN=4997040&site=ehost-live&scope=site DP - EBSCOhost DB - ufh ER - TY - AU - Riester, Albert E.1 AU - Zucker, Robert A.2 T1 - Adolescent Social Structure and Drinking Behavior. JO - Personnel & Guidance Journal JF - Personnel & Guidance Journal J1 - Personnel & Guidance Journal PY - 1968/12// Y1 - 1968/12// VL - 47 IS - 4 CP - 4 M3 - Article SP - 304 EP - 312 SN - 00315737 AB - The study examines adolescent drinking customs in the context of theinformal social structure of the high school. Teenage drinkingbehavior was also examined in relationship to demographic variablesand parental use of alcoholic beverages. The study identified amosaic adolescent society consisting of eight informal social statussubgroups with contrasting and often hostile values, attitudes, andleisure-time patterns. A highly significant (p <.001) relationship was found between the students' subgroup membership and drinking category. Parental alcohol use also was related to teenagers' use (p < .001), and interesting variations were identified when teenage drinking behavior was studied in relationship to demographic factors. [ABSTRACT FROM AUTHOR] KW - Teenagers KW - Drinking of alcoholic beverages KW - Social structure KW - Parents KW - Attitude (Psychology) KW - Human behavior N1 - Accession Number: 14835163; Authors: Riester, Albert E. 1; Zucker, Robert A. 2; Affiliations: 1: Wilford Hall United States Air Force Hospital, Mental Hygiene Clinic, Lackland Air Force Base, Texas.; 2: Assistant Professor of Psychology, Michigan State University, East Lansing.; Subject: Teenagers; Subject: Drinking of alcoholic beverages; Subject: Social structure; Subject: Parents; Subject: Attitude (Psychology); Subject: Human behavior; Number of Pages: 9p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=14835163&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - Naylor, James C. AU - Clark, Roger D. T1 - Intuitive Inference Strategies in Interval Learning Tasks as a Function of Validity Magnitude and Sign. JO - Organizational Behavior & Human Performance JF - Organizational Behavior & Human Performance Y1 - 1968/11// VL - 3 IS - 4 M3 - Article SP - 378 EP - 399 SN - 00305073 AB - Nine groups of ten subjects each performed for 200 trials on interval learning tasks in which the stimulus, response and reinforcement continua were continuous scaled variables. The nine experimental conditions were defined by the size and sign of the product-moment correlation between the stimulus and reinforcement (criterion) distributions. That is, re ranged from - .80 to +.80 in steps of .20. There was little or no evidence for matching behavior with correlational performance measures. Subjects leaning positive re relationships tended to overmatch (rs > re, with the tendency to do so increasing as the size of re decreased. Subjects who learned negative re values consistently undermatched (rs < re, apparently due to a general set to regard "relatedness" as a positive phenomenon. Analysis of subjects' conditional response arrays showed that subjects' conditional response distributions had greater dispersion than the corresponding conditional reinforcement distributions. The size of this effect increased as a function of the absolute magnitude of re and was most evident with high and low stimulus arrays. A tendency for subjects to displace the array means followed a similar pattern. [ABSTRACT FROM AUTHOR] AB - Copyright of Organizational Behavior & Human Performance is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TASK analysis KW - STATISTICS KW - MATHEMATICS KW - PERFORMANCE standards KW - INFERENCE (Logic) KW - LEARNING N1 - Accession Number: 8824808; Naylor, James C. 1; Clark, Roger D. 2; Affiliations: 1: Purdue University; 2: United States Air Force.; Issue Info: Nov68, Vol. 3 Issue 4, p378; Thesaurus Term: TASK analysis; Thesaurus Term: STATISTICS; Thesaurus Term: MATHEMATICS; Thesaurus Term: PERFORMANCE standards; Subject Term: INFERENCE (Logic); Subject Term: LEARNING; Number of Pages: 22p; Illustrations: 7 Diagrams, 1 Chart, 11 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=8824808&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - ABST AU - Plane, Donald R. T1 - Problems in the Theory of Finance. JO - Journal of Financial & Quantitative Analysis JF - Journal of Financial & Quantitative Analysis Y1 - 1967/12// VL - 2 IS - 4 M3 - Abstract SP - 421 EP - 422 PB - Cambridge University Press SN - 00221090 AB - The article presents an abstract which refers to "Problems in the Theory of Finance" and Chairman Ralph Ringenberg of the University of Colorado and focuses on "Determination of Risk-Adjusted Discount Rates," by Donald R. Plane of the United States Air Force Academy. KW - DISCOUNT N1 - Accession Number: 5724796; Plane, Donald R. 1; Affiliations: 1: United States Air Force Academy; Issue Info: Dec67, Vol. 2 Issue 4, p421; Thesaurus Term: DISCOUNT; Number of Pages: 2p; Document Type: Abstract UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=5724796&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - King, William R. AU - Wittevrongel, Donald M. AU - Hezel, Karl D. T1 - ON THE ANALYSIS OF CRITICAL PATH TIME ESTIMATING BEHAVIOR. JO - Management Science JF - Management Science Y1 - 1967/09// VL - 14 IS - 1 M3 - Article SP - 79 EP - 84 PB - INFORMS: Institute for Operations Research SN - 00251909 AB - This paper presents some results of an analysis of time estimating behavior on critical path networks used in large scale development projects. The general results appear to confirm the validity of the tentative conclusions previously reported by King and Wilson. The objective of the historical analysis is to test the potential of adjustment models based on historical estimating behavior. If such models can be developed, the utility of critical path techniques should be greatly enhanced. [ABSTRACT FROM AUTHOR] AB - Copyright of Management Science is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRITICAL path analysis KW - ESTIMATION theory KW - NETWORK analysis (Planning) KW - PUBLIC contracts KW - MATHEMATICAL models KW - PROJECT management KW - RESEARCH KW - TIME perception KW - RESEARCH & development partnership KW - HYPOTHESIS N1 - Accession Number: 7124170; King, William R. 1; Wittevrongel, Donald M. 2; Hezel, Karl D. 2; Affiliations: 1: Graduate School of Business, University of Pittsburgh.; 2: United States Air Force.; Issue Info: Sep67, Vol. 14 Issue 1, p79; Thesaurus Term: CRITICAL path analysis; Thesaurus Term: ESTIMATION theory; Thesaurus Term: NETWORK analysis (Planning); Thesaurus Term: PUBLIC contracts; Thesaurus Term: MATHEMATICAL models; Thesaurus Term: PROJECT management; Thesaurus Term: RESEARCH; Subject Term: TIME perception; Subject Term: RESEARCH & development partnership; Subject Term: HYPOTHESIS; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=7124170&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Holloman, Charles R. T1 - THE PERCEIVED LEADERSHIP ROLE OF MILITARY AND CIVILIAN SUPERVISORS IN MILITARY SETTING. JO - Personnel Psychology JF - Personnel Psychology Y1 - 1967///Summer67 VL - 20 IS - 2 M3 - Article SP - 199 EP - 210 PB - Wiley-Blackwell SN - 00315826 AB - This study suggests that supervisors in military organizations are not as authoritarian in their behavior as they are generally believed to be and that they can successfully structure the work situation and influence and motivate subordinates while still showing the consideration expected by subordinates. If the superior, who has been described as a secondline supervisor, can be further described in terms of his perceptions of the leadership role of supervisors, he is higher in both structure and consideration than subordinates expect him to be. This description suggests that continued experience in or working for the Air Force condition both military and civilian supervisors to reflect increased consideration and structure in their leadership preferences and attitudes. The need for a supervisor to initiate structure apparently becomes more pressing as his supervisory responsibilities increase. However, it appears that he tends also to become more considerate. [ABSTRACT FROM AUTHOR] AB - Copyright of Personnel Psychology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERVISORS KW - EMPLOYEES KW - SHOP stewards KW - LEADERSHIP KW - COMMAND of troops KW - AUTHORITARIANISM N1 - Accession Number: 6260871; Holloman, Charles R. 1; Affiliations: 1: United States Air Force Academy, Colorado.; Issue Info: Summer67, Vol. 20 Issue 2, p199; Thesaurus Term: SUPERVISORS; Thesaurus Term: EMPLOYEES; Thesaurus Term: SHOP stewards; Thesaurus Term: LEADERSHIP; Subject Term: COMMAND of troops; Subject Term: AUTHORITARIANISM; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=6260871&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - GEN AU - Carley, Joseph G, Jr T1 - Military command information systems from the user's point of view JO - In Walker, Donald E., Ed. Information System Science And Technology. 1967. Thompson Book Co., Washington, D.c. P. 241-250. See Isa 69-034/y JF - In Walker, Donald E., Ed. Information System Science And Technology. 1967. Thompson Book Co., Washington, D.c. P. 241-250. See Isa 69-034/y Y1 - 1967/// M3 - Book Chapter AB - The automated command and control system is rapidly becoming a key element in the total command and control system. A new category of personnel, the system operators, must have a strong voice in command and control matters. The real 'users' of the system are the commander and his staff. The u.s. Air force (usaf) integrated command and control system is described. Concepts such as incremental evolutionary approach, compatibility and standardization, and immediate and direct responsivity are defined, explained, and broadened to provide an overview of the usaf automated (headquarters level) system. Usaf must approach this system from a perspective of a worldwide, total resource. The standardization objective must be accomplished within the framework provided by the joint chiefs of staff for the world-wide military command and control system. N1 - Accession Number: ISTA0400199; Carley, Joseph G, Jr 1; Affiliations: 1 : Headquarters, United States Air Force, Washington, D.c.; Source Info: 1967; Note: Update Code: 0400; Document Type: Book Chapter UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lih&AN=ISTA0400199&site=ehost-live&scope=site DP - EBSCOhost DB - lih ER - TY - AU - Jones, Douglas N.1 T1 - Art, Economics, and Education. JO - Journal of Higher Education JF - Journal of Higher Education J1 - Journal of Higher Education PY - 1965/01// Y1 - 1965/01// VL - 36 IS - 1 CP - 1 M3 - Article SP - 41 EP - 43 SN - 00221546 AB - This article describes an educational experiment in a course called Intermediate Economic Theory in which the author sought to relate economics to the humanities and the arts. Graduate students in a yearlong seminar were asked to express economic abstractions through painting, short story, poetry, photography, and sculpture. One student wrote a short story that lets the reader know public misgivings about economic assistance, economic development, and social disruptiveness. The phenomenon of diminishing returns was visualized with a concentric, spiraling wire sculpture. The relation between private enterprise and government under law was represented in a styrofoam abstract sculpture. KW - Painting KW - Experimental methods in education KW - Economics -- Study & teaching KW - Art -- Study & teaching KW - Humanities -- Study & teaching KW - Project method in teaching KW - Activity programs in education KW - Sculpture KW - Photography in education KW - Poetry (Literary form) N1 - Accession Number: 19828742; Authors: Jones, Douglas N. 1; Affiliations: 1: United States Air Force Academy; Subject: Experimental methods in education; Subject: Economics -- Study & teaching; Subject: Art -- Study & teaching; Subject: Humanities -- Study & teaching; Subject: Project method in teaching; Subject: Activity programs in education; Subject: Painting; Subject: Sculpture; Subject: Photography in education; Subject: Poetry (Literary form); Number of Pages: 3p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=19828742&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR ID - 2005-11644-009 AN - 2005-11644-009 AU - Fortuna, Angelo L. T1 - Candid Camera: An Alternate View. JF - American Psychologist JO - American Psychologist JA - Am Psychol Y1 - 1964/11// VL - 19 IS - 11 SP - 847 EP - 847 CY - US PB - American Psychological Association SN - 0003-066X SN - 1935-990X N1 - Accession Number: 2005-11644-009. Partial author list: First Author & Affiliation: Fortuna, Angelo L.; United States Air Force Academy, US. Release Date: 20060327. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Comment/Reply. Language: English. Major Descriptor: Audiovisual Communications Media; Observation Methods; Psychology. Minor Descriptor: Cameras. Classification: Social Psychology (3000). Location: US. References Available: Y. Page Count: 1. Issue Publication Date: Nov, 1964. Copyright Statement: American Psychological Association. 1964. AB - Comments on the article by Evans and Hildreth (see record [rid]1965-01409-001[/rid]), which described a conference to explore the potential of the Allen Funt Candid Camera technique of spontaneous recordings of human behavior for research purposes. The current author expresses skepticism about the conference, particularly the ethical considerations. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - behavior observation technique KW - candid camera technique KW - social psychology KW - 1964 KW - Audiovisual Communications Media KW - Observation Methods KW - Psychology KW - Cameras KW - 1964 DO - 10.1037/h0038721 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-11644-009&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR T1 - EGO STRENGTH AND RESPONSE STEREOTYPY. AU - Roessler, Robert AU - Greenfield, N. S. AU - Alexander, A. A. JO - Psychophysiology JF - Psychophysiology Y1 - 1964/10// VL - 1 IS - 2 SP - 142 EP - 150 SN - 00485772 N1 - Accession Number: 11044148; Author: Roessler, Robert: 1 Author: Greenfield, N. S.: 1 Author: Alexander, A. A.: 1,2 ; Author Affiliation: 1 Psychophysiology Laboratory, Wisconsin Psychiatric Institute and Department of Psychiatry, University of Wisconsin Medical Center, Madison, Wisconsin.: 2 United States Air Force Personnel Research Laboratory, Lackland Air Force Base, Texas.; No. of Pages: 9; Language: English; Publication Type: Article; Update Code: 20040119 N2 - The incidence of specificity and stereotypy was examined among 36 Ss' responses to six intensities of a 1000-cps tone. It was found that stereotypy occurred in 26 of the 36 Ss and was significantly less frequent among subjects in an intermediate range of ego strength. When a significant hierarchical patterning of ranks was found (stereotypy), there was marked individual variation in the order of ranks among physiological variables and the order was not related to ego strength. Specificity of response was less frequent, occurring in 16 of the 36 Ss. There was significantly more specificity in a high ego strength group as compared to middle and low Es groups. Specificity occurred most frequently on heart rate but not significantly more frequently. ABSTRACT FROM AUTHOR KW - *HEART beat KW - *PATHOLOGICAL psychology KW - EGO strength KW - STEREOTYPY (Psychiatry) KW - HIERARCHIES KW - IMMUNOSPECIFICITY KW - Ego strength KW - Finger volume KW - Heart rate KW - Hierarchy KW - Muscle potential KW - Skin resistance KW - Specificity KW - Stereotypy. UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=s3h&AN=11044148&site=ehost-live&scope=site DP - EBSCOhost DB - s3h ER - TY - JOUR AU - Miller, Donald S. AU - Gilbert, Ronald L. T1 - Management of fracture with vascular injury. JO - Geriatrics JF - Geriatrics Y1 - 1964/09// VL - 19 IS - 9 M3 - Article SP - 658 EP - 668 SN - 0016867X N1 - Accession Number: 17525262; Miller, Donald S. 1; Gilbert, Ronald L. 2; Source Information: Sep1964, Vol. 19 Issue 9, p658; Number of Pages: 11p; Illustrations: 1 Black and White Photograph; Document Type: Article; Full Text Word Count: 5367 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=hch&AN=17525262&site=ehost-live&scope=site DP - EBSCOhost DB - hch ER - TY - AU - Smith, Herman F.1 T1 - The Case of Johnnie Lernslo. JO - Education JF - Education J1 - Education PY - 1963/03// Y1 - 1963/03// VL - 83 IS - 7 CP - 7 M3 - Article SP - 433 EP - 435 SN - 00131172 AB - The article relates the experience of United States Air Force Academy cadet Johnnie Lernslo, who failed to respond satisfactorily to the scientific instruction of the Life Preparation Center in Denver, Colorado. The academy had a schedule for weekly examination, where if cadets were able to pass, they could eligible for the next level. Lernslo experience difficulty in answering the test questions that eventually made him fail the exam. However, the academy director gave him another chance and let him participate in a program where he would join other students who were having the same academic level as him. KW - Education KW - Military cadets KW - Examinations -- Study guides KW - Students -- Rating of KW - Airborne troops KW - Lernslo, Johnnie KW - United States. Air Force KW - Denver (Colo.) KW - Colorado N1 - Accession Number: 19090591; Authors: Smith, Herman F. 1; Affiliations: 1: Professor of Behavioral Sciences, United States Air Force Academy, Colorado; Subject: Lernslo, Johnnie; Subject: Military cadets; Subject: Examinations -- Study guides; Subject: United States. Air Force; Subject: Education; Subject: Students -- Rating of; Subject: Airborne troops; Subject: Denver (Colo.); Subject: Colorado; Number of Pages: 3p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=19090591&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - ABST AU - HADY, THOMAS F. T1 - AN ANALYSIS OF THE DISTRIBUTION OF THE MINNESOTA PERSONAL PROPERTY TAX. JO - Journal of Finance JF - Journal of Finance Y1 - 1962/09// VL - 17 IS - 3 M3 - Abstract SP - 516 EP - 517 PB - Wiley-Blackwell SN - 00221082 AB - An abstract is presented for the doctoral dissertation "An Analysis of the Distribution of the Minnesota Personal Property Tax," by Thomas F. Hady. KW - TAXATION of personal property KW - MINNESOTA N1 - Accession Number: 17462262; HADY, THOMAS F. 1; Affiliations: 1: United States Air Force.; Issue Info: Sep62, Vol. 17 Issue 3, p516; Thesaurus Term: TAXATION of personal property; Subject: MINNESOTA; Number of Pages: 2p; Document Type: Abstract UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=17462262&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - AU - Schubert, Delwyn G.1 T1 - Inviting Book Reporting. JO - Education JF - Education J1 - Education PY - 1961/01// Y1 - 1961/01// VL - 81 IS - 5 CP - 5 M3 - Article SP - 264 EP - 265 SN - 00131172 AB - This article discusses how a teacher can motivate students to do book reporting. On occasions, student should be given opportunities for a tete-a-tete with their teachers about books that have read. Book reporting can be a rewarding experience; many times, especially in the case of oral reporting, it can become a valuable social experience, serving to interest all students in the joys of book reading. Encouraging pupils to share their lists of favorite authors reveals the breath and depth of their reading and interests their friends and other classmates in wider reading. KW - Reading KW - Students KW - Oral reading KW - Oral communication KW - Motivation (Psychology) KW - Social interaction N1 - Accession Number: 19112202; Authors: Schubert, Delwyn G. 1; Affiliations: 1: Director of Primary Education and Remedial Reading United States Air Force Dependent Schools Wiesbaden, West Germany; Subject: Reading; Subject: Oral reading; Subject: Students; Subject: Oral communication; Subject: Motivation (Psychology); Subject: Social interaction; Number of Pages: 2p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=19112202&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - White, Ernest J. T1 - Pension Plans in Labor Agreements v. Older Workers. JO - Labor Law Journal JF - Labor Law Journal Y1 - 1961/01// VL - 12 IS - 1 M3 - Article SP - 32 PB - CCH Incorporated SN - 00236586 AB - Pensions are stated allowance to one retired from service. In 17 major cities of the U.S. in 1955-1956, the U.S. Department of Labor, Bureau of Labor Statistics, found that about 75 percent of the office workers and over 60 percent of the plant workers were covered by special retirement or pension plans. These facts are more encouraging to an older worker who has a secure position, to the unions who acquired these benefits from the employer and to the general economy for the increased purchasing power of pensioners. However, they are meaningless to the unemployed, the federal, state and local agencies dealing with the unemployed, and the public generally. The article also presents a series of pertinent facts related with considering the problem of pension costs and the older worker. It is observed that on the average, people are living longer, the population, 45 years of age and over, has increased more rapidly than the total population, increased years of life will largely be spent in retirement and major population increases by 1965 will be among younger and older age groups. KW - OLD age pensions KW - COST estimates KW - PENSION trusts KW - OLDER people -- Employment KW - WORKING class -- Statistics KW - COLLECTIVE bargaining KW - COST & standard of living KW - AGE groups KW - UNITED States N1 - Accession Number: 9490055; White, Ernest J. 1,2; Affiliations: 1: Member, District of Columbia Bar, State Bar, Commonwealth of Virginia.; 2: Judge Advocate, United States Air Force.; Issue Info: Jan61, Vol. 12 Issue 1, p32; Thesaurus Term: OLD age pensions; Thesaurus Term: COST estimates; Thesaurus Term: PENSION trusts; Thesaurus Term: OLDER people -- Employment; Thesaurus Term: WORKING class -- Statistics; Thesaurus Term: COLLECTIVE bargaining; Thesaurus Term: COST & standard of living; Subject Term: AGE groups; Subject: UNITED States; NAICS/Industry Codes: 526112 Non-trusteed pension funds; NAICS/Industry Codes: 525110 Pension Funds; NAICS/Industry Codes: 526111 Trusteed pension funds; Number of Pages: 20p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=9490055&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Adams, R. H. AU - Jenkins, J. L. T1 - SIMULATION OF AIR OPERATIONS WITH THE AIR-BATTLE MODEL. JO - Operations Research JF - Operations Research Y1 - 1960/09//Sep/Oct60 VL - 8 IS - 5 M3 - Article SP - 600 EP - 615 PB - INFORMS: Institute for Operations Research SN - 0030364X AB - This paper discusses the Air-Battle Model that, with its supporting computer programs, is a device for simulating a large-scale two-sided global war on a high-speed digital computer. The three parts, the Plan Converter, the Air-Battle Model, and the Output Programs, of the Air-Battle-Model System are discussed. Some applications of the Air-Battle Model are shown and the technique of using gross summary measures to obtain a feel for some key conclusions and using detailed studies to determine why some conclusions resulted is demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of Operations Research is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER software KW - SIMULATION methods & models KW - OPERATIONS research KW - SYSTEMS engineering KW - AIR warfare KW - COMPUTER simulation KW - MILITARY aeronautics KW - FIGHTER plane combat KW - MILITARY art & science N1 - Accession Number: 7687450; Adams, R. H. 1; Jenkins, J. L. 2; Affiliations: 1: Air Battle Analysis Division, United States Air Force, Washington, D.C.; 2: Technical Operation, Incorporated, Washington, D.C.; Issue Info: Sep/Oct60, Vol. 8 Issue 5, p600; Thesaurus Term: COMPUTER software; Thesaurus Term: SIMULATION methods & models; Thesaurus Term: OPERATIONS research; Thesaurus Term: SYSTEMS engineering; Subject Term: AIR warfare; Subject Term: COMPUTER simulation; Subject Term: MILITARY aeronautics; Subject Term: FIGHTER plane combat; Subject Term: MILITARY art & science; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; Number of Pages: 16p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=7687450&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 2005-11051-001 AN - 2005-11051-001 AU - Brown, Daniel G. T1 - On Interprofessional Responsibility. JF - American Psychologist JO - American Psychologist JA - Am Psychol Y1 - 1960/05// VL - 15 IS - 5 SP - 316 EP - 317 CY - US PB - American Psychological Association SN - 0003-066X SN - 1935-990X N1 - Accession Number: 2005-11051-001. Partial author list: First Author & Affiliation: Brown, Daniel G.; United States Air Force Hospital, Forbes Air Force Base, KS, US. Release Date: 20060327. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Journal Article. Language: English. Major Descriptor: Professional Ethics; Professional Identity; Professional Standards; Psychiatry; Psychology. Minor Descriptor: Professional Liability; Responsibility; Scientific Communication. Classification: Professional Psychological & Health Personnel Issues (3400). Population: Human (10). Page Count: 2. Issue Publication Date: May, 1960. Copyright Statement: American Psychological Association. 1960. AB - In recent years much has been written about ethical standards and responsibilities within the profession of psychology. However, this communication is concerned with the question of fairness and responsibility of members of one profession, psychiatry, to the members of a different but related profession, psychology; and vice versa. This comment, quite simply, is a suggestion that instances of misleading or irresponsible interprofessional conduct among psychologists, psychiatrists and other physicians, social workers, and members of other relevant mental health groups be brought to light, especially to the attention of the respective professions concerned. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - interprofessional responsibility KW - ethical standards KW - psychology KW - communication KW - psychiatry KW - professional conduct KW - 1960 KW - Professional Ethics KW - Professional Identity KW - Professional Standards KW - Psychiatry KW - Psychology KW - Professional Liability KW - Responsibility KW - Scientific Communication KW - 1960 DO - 10.1037/h0039410 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-11051-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - Olsen, Marvin E. T1 - Motion Picture Attendance and Social Isolation. JO - Sociological Quarterly JF - Sociological Quarterly Y1 - 1960/04// VL - 1 IS - 2 M3 - Article SP - 107 EP - 116 SN - 00380253 AB - The article studies basic question of why people go to movies. The author says that there could be community-wide of region-wide social forces, which influence people either toward or away from motion pictures. Here, the author hypothesizes that to a large extent people go to the movies because they cannot find other more personal forms of recreation. The author believes that the greater the social isolation, defined as a lack of close personal friends, the higher the movie attendance. The study was conducted entirely on a community level of analysis. The sample, used in the study is consisted of 167 of the 172 Standard Metropolitan Areas in the United States in 1958. Social isolation on a community level is highly correlated with motion picture receipts. A number of demographic factors previously found to be characteristic of individual movie patrons showed little or no relationship to movie attendance on a community basis. KW - SOCIAL isolation KW - MOTION pictures in the social sciences KW - SOCIAL psychology KW - MOTION pictures KW - SOCIAL distance KW - UNITED States N1 - Accession Number: 14695607; Olsen, Marvin E. 1; Affiliations: 1 : United States Air Force.; Source Info: Apr60, Vol. 1 Issue 2, p107; Subject Term: SOCIAL isolation; Subject Term: MOTION pictures in the social sciences; Subject Term: SOCIAL psychology; Subject Term: MOTION pictures; Subject Term: SOCIAL distance; Subject: UNITED States; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=24h&AN=14695607&site=ehost-live&scope=site DP - EBSCOhost DB - 24h ER - TY - JOUR AU - White, Ernest J. T1 - The NLRB and the General Counsel Revisited. JO - Labor Law Journal JF - Labor Law Journal Y1 - 1959/04// VL - 10 IS - 4 M3 - Article SP - 255 PB - CCH Incorporated SN - 00236586 AB - Recalling some of the differences between the NLRB and the General Counsel, the author makes specific recommendations to avoid such differences and to open up areas of cooperation. His proposals are based primarily on a recent survey he made for this article, which Mr. White prepared in conjunction with his graduate studies in law. [ABSTRACT FROM AUTHOR] AB - Copyright of Labor Law Journal is the property of CCH Incorporated and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COOPERATION KW - LABOR laws & legislation KW - INDUSTRIAL relations KW - INDUSTRIAL sociology KW - LABOR KW - SURVEYS KW - UNITED States KW - UNITED States. National Labor Relations Board N1 - Accession Number: 9296973; White, Ernest J. 1; Affiliations: 1: Judge Advocate in the United States Air Force.; Issue Info: Apr59, Vol. 10 Issue 4, p255; Thesaurus Term: COOPERATION; Thesaurus Term: LABOR laws & legislation; Thesaurus Term: INDUSTRIAL relations; Thesaurus Term: INDUSTRIAL sociology; Thesaurus Term: LABOR; Subject Term: SURVEYS; Subject: UNITED States ; Company/Entity: UNITED States. National Labor Relations Board; NAICS/Industry Codes: 926150 Regulation, Licensing, and Inspection of Miscellaneous Commercial Sectors; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=9296973&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Bowers, Raymond V. T1 - OCCUPATIONAL ROLES OF SOCIOLOGISTS. JO - American Sociological Review JF - American Sociological Review Y1 - 1958/10// VL - 23 IS - 5 M3 - Article SP - 583 EP - 584 SN - 00031224 AB - The purpose of the survey of the active members of the American Sociological Society was to provide current data for the Society's brochure on the roles of sociologists, which is being prepared by an Editorial Board appointed by President Robin Williams. Nearly half of the questionnaires were returned by April 1, when the flow had practically stopped. Thus sociology is still primarily an academic profession, although only 63 per cent of the members who responded are in the traditional role of "members of sociology departments." Another 15 per cent are in academic life but have part-or full-time duty outside a sociology department. Another 22 per cent work outside academic institutions. Thus the research function has become a close second to teaching in the proportion of academic sociologists claiming it as a part of their jobs and it is the primary function for sociologists outside of academic life. Administrative work is the third most important function in the jobs held by academic sociologists, while it is second for those in government and business. KW - OCCUPATIONAL roles KW - PROFESSIONAL identity KW - RESEARCH KW - QUESTIONNAIRES KW - SOCIOLOGISTS KW - SOCIOLOGY N1 - Accession Number: 12800616; Bowers, Raymond V. 1; Affiliations: 1: Air Force Personnel and Training Research Center United States Air Force; Issue Info: Oct58, Vol. 23 Issue 5, p583; Thesaurus Term: OCCUPATIONAL roles; Thesaurus Term: PROFESSIONAL identity; Thesaurus Term: RESEARCH; Thesaurus Term: QUESTIONNAIRES; Subject Term: SOCIOLOGISTS; Subject Term: SOCIOLOGY; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12800616&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - GEN AU - Coile, Russell AU - Foster, Baba AU - Brothers, LeRoy A. T1 - Letters to the Editor. JO - Operations Research JF - Operations Research Y1 - 1958/05//May/Jun58 VL - 6 IS - 3 M3 - Letter SP - 434 PB - INFORMS: Institute for Operations Research SN - 0030364X AB - Presents a letter to the editor about the use of computers for mechanized literature searching in operations research libraries. KW - INFORMATION storage & retrieval systems KW - OPERATIONS research KW - LETTERS to the editor N1 - Accession Number: 7681913; Coile, Russell 1; Foster, Baba 1; Brothers, LeRoy A. 2; Affiliations: 1: Operations Evaluation Group, Massachusetts Institute of Technology, P O Box 2176, Potomac Station, Alexandria, Virginia.; 2: Operations Analysis Office, Headquarters, United States Air Force, Washington, D C.; Issue Info: May/Jun58, Vol. 6 Issue 3, p434; Thesaurus Term: INFORMATION storage & retrieval systems; Thesaurus Term: OPERATIONS research; Subject Term: LETTERS to the editor; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; Number of Pages: 18p; Document Type: Letter UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=7681913&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR ID - 2013-39061-020 AN - 2013-39061-020 AU - Brown, Daniel G. T1 - Inversion and homosexuality. JF - American Journal of Orthopsychiatry JO - American Journal of Orthopsychiatry JA - Am J Orthopsychiatry Y1 - 1958/04// VL - 28 IS - 2 SP - 424 EP - 429 CY - US PB - American Orthopsychiatric Association, Inc. SN - 0002-9432 SN - 1939-0025 N1 - Accession Number: 2013-39061-020. PMID: 13545366 Partial author list: First Author & Affiliation: Brown, Daniel G.; Mental Hygiene Clinic, United States Air Force Academy, CO, US. Other Publishers: Educational Publishing Foundation; Wiley-Blackwell Publishing Ltd. Release Date: 20131223. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Electronic. Document Type: Journal Article. Language: English. Major Descriptor: Homosexuality; Personality Traits; Psychosexual Behavior. Classification: Sexual Behavior & Sexual Orientation (2980). Population: Human (10); Male (30); Female (40). Location: US. Age Group: Adulthood (18 yrs & older) (300). Methodology: Empirical Study; Quantitative Study. References Available: Y. Page Count: 6. Issue Publication Date: Apr, 1958. AB - The terms inversion and homosexuality are often used synonymously in the professional literature. This paper has emphasized the necessity of distinguishing between these phenomena and suggests that the term inversion refer to the personality structure of the individual, not to the direction or object of sexual gratification as such. It is hypothesized that inversion is most commonly based on an early and persistent identification-attachment to the parent of the opposite sex which results in the child's incorporating and adopting the role-model of the opposite sex. It is also hypothesized that inversion is more common among males than among females. A theoretical rationale is provided for this hypothesis and evidence pertaining to the sex ratio of individuals desiring to change their sex is cited in this connection. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - personality structure KW - sex ratio KW - sexual gratification KW - theoretical rationale KW - homosexuality KW - 1958 KW - Homosexuality KW - Personality Traits KW - Psychosexual Behavior KW - 1958 DO - 10.1111/j.1939-0025.1958.tb03761.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2013-39061-020&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - GEN AU - Erlang, A. K. AU - Saaty, Thomas L. AU - Davis, Allen Y. AU - Worthington, William B. AU - Camp, Glen D. AU - Epstein, L. Ivan AU - Brothers, LeRoy A. AU - Lathrop, John B. T1 - LETTERS TO THE EDITOR. JO - Operations Research JF - Operations Research Y1 - 1957/04// VL - 5 IS - 2 M3 - Letter SP - 293 PB - INFORMS: Institute for Operations Research SN - 0030364X AB - Presents several letters to the editor about various articles published in the previous issues of the periodical "Operations Research." Contribution by A.K. Erlang in the filed of telephony; Relationship between operations research and the Systems and Procedures Association of America; Application of set theory to a class of allocation problems. KW - OPERATIONS research KW - INDUSTRIAL management KW - TELEPHONE systems KW - LETTERS to the editor KW - SET theory KW - ASSIGNMENT problems (Programming) KW - OPERATIONS Research (Periodical) N1 - Accession Number: 7679678; Erlang, A. K. 1; Saaty, Thomas L. 1; Davis, Allen Y. 2; Worthington, William B. 3; Camp, Glen D. 4; Epstein, L. Ivan 5; Brothers, LeRoy A. 6; Lathrop, John B. 7; Affiliations: 1: Operations Evaluation Group, Massachusetts Institute of Technology, P O Box 9178, Potomac Station, Alexandria, Virginia.; 2: National President, Systems and Procedures Association of America.; 3: National Director, Education, Systems and Procedures Association of America.; 4: Operations Research Group, George Washington University, Washington, D C.; 5: Glenn L. Martin Company, Baltimore, Maryland.; 6: Operations Analysts Office, Headquarters, United States Air Force, Washington, D C.; 7: Lockheed Aircraft Corporation, Burbank, California.; Issue Info: Apr57, Vol. 5 Issue 2, p293; Thesaurus Term: OPERATIONS research; Thesaurus Term: INDUSTRIAL management; Thesaurus Term: TELEPHONE systems; Subject Term: LETTERS to the editor; Subject Term: SET theory; Subject Term: ASSIGNMENT problems (Programming); Reviews & Products: OPERATIONS Research (Periodical); NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; NAICS/Industry Codes: 517911 Telecommunications Resellers; Number of Pages: 10p; Document Type: Letter UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=7679678&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Barden, William A. T1 - ARMED SERVICES TECHNICAL INFORMATION AGENCY. JO - American Documentation JF - American Documentation Y1 - 1956/07// VL - 7 IS - 3 M3 - Article SP - 188 EP - 200 SN - 0096946X AB - Discusses the Armed Services Technical Information Agency (ASTIA) of the U.S. Air Force. Reasons for screening reports received by ASTIA; Overview of the cataloging process for the reports; Forms used to facilitate the handling of military requests; Background on the reference service as part of the ASTIA mission. KW - INFORMATION services KW - COMMUNICATION of technical information KW - CATALOGING KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 16779759; Barden, William A. 1; Affiliations: 1: Chief, Operations Division, Armed Services Technical Information Agency, Air Research and Development Command, United States Air Force; Issue Info: Jul1956, Vol. 7 Issue 3, p188; Thesaurus Term: INFORMATION services; Subject Term: COMMUNICATION of technical information; Subject Term: CATALOGING; Subject: UNITED States ; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 519190 All Other Information Services; NAICS/Industry Codes: 928110 National Security; Number of Pages: 13p; Illustrations: 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=16779759&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - AU - Fontanella, M. A.1 T1 - The Military Instructor's Rôle in Guidance. JO - Journal of Higher Education JF - Journal of Higher Education J1 - Journal of Higher Education PY - 1956/06// Y1 - 1956/06// VL - 27 IS - 6 CP - 6 M3 - Article SP - 301 EP - 349 SN - 00221546 AB - Major Fontanella of the United States Air Force wrote this paper in 1954 while on duty with the A.F.R.O.T.C. detachment at Fordham University. It was distributed to R.O.T.C. units throughout the country in letter form. He is presently stationed on an American Air Base in France. [ABSTRACT FROM AUTHOR] KW - United States -- Armed Forces KW - Universities & colleges -- United States KW - Armed Forces -- Vocational guidance KW - Military aeronautics KW - Student affairs services KW - American air bases KW - United States. Air Force KW - United States N1 - Accession Number: 21468427; Authors: Fontanella, M. A. 1; Affiliations: 1: United States Air Force; Subject: United States. Air Force; Subject: United States -- Armed Forces; Subject: Universities & colleges -- United States; Subject: Armed Forces -- Vocational guidance; Subject: Military aeronautics; Subject: Student affairs services; Subject: American air bases; Subject: United States; Number of Pages: 8p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=21468427&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR AU - Hetzler, Stanley A. T1 - VARIATIONS IN ROLE-PLAYING PATTERNS AMONG DIFFERENT ECHELONS OF BUREAUCRATIC LEADERS. JO - American Sociological Review JF - American Sociological Review Y1 - 1955/12// VL - 20 IS - 6 M3 - Article SP - 700 EP - 706 SN - 00031224 AB - This study is based upon the postulate that within any group there is an element of interpersonal competition. There is no attempt made here to distinguish between competitive and aggressive behavior, although the paper holds implications about a technique for studying the latter as well as the generally related area of role analysis. When the leader is viewed against the framework of organizational structure, he might be said to have three reference groups for the display of competitive behavior his subordinates, peers, and superiors. These are more than arbitrary categorizations. Through common usage these three layers of association have become fairly well established as popular concepts. They are distinctions made and perceived by group participants themselves. The purpose of this investigation was to determine whether or not groups representing different levels of leadership tend to channel personal competition differently in respect to each of the three foregoing areas of relationships. If a leader competes to an excessive degree with his subordinates, this might suggest a personal insecurity, a continuous need for status reassertion. This characteristic could derive from a condition higher up in the hierarchy, from personal maladjustment, or from a feeling on the part of the leader that he has risen to the limit of his abilities or for other reasons has reached an impasse. KW - CIVIL service KW - ORGANIZATIONAL structure KW - COMPETITION KW - SOCIAL Darwinism KW - SOCIAL groups KW - SOCIOLOGICAL research N1 - Accession Number: 12781414; Hetzler, Stanley A. 1; Affiliations: 1: The United States Air Force; Issue Info: Dec55, Vol. 20 Issue 6, p700; Thesaurus Term: CIVIL service; Thesaurus Term: ORGANIZATIONAL structure; Subject Term: COMPETITION; Subject Term: SOCIAL Darwinism; Subject Term: SOCIAL groups; Subject Term: SOCIOLOGICAL research; NAICS/Industry Codes: 921190 Other General Government Support; NAICS/Industry Codes: 541720 Research and Development in the Social Sciences and Humanities; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=12781414&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - AU - Hammer, Wendell A.1 T1 - Implications of the New A.F.-R.O.T.C. Course of Study. JO - Journal of Higher Education JF - Journal of Higher Education J1 - Journal of Higher Education PY - 1954/04// Y1 - 1954/04// VL - 25 IS - 4 CP - 4 M3 - Article SP - 207 EP - 209 SN - 00221546 AB - The article reports on the establishment of a new course for the Air Force Reserve Officers' Training Corps approved by the U.S. Chief of Staff. The course is authorized to be taught at several colleges and universities having units of the Corps that would take effect in September 1953. The course however, has several implications on the program for higher education. Military instruction needs revitalization by new ideas and strategies every now and then so as to prevent sterility out from educational inbreeding. Another implication involved the technological and scientific advances upon which are developed on military services are adapted to civilian application. KW - Universities & colleges KW - Military aeronautics -- Study & teaching KW - Higher education KW - Air forces KW - Armed Forces KW - Individualized education programs KW - Civil-military relations KW - Educational innovations KW - United States N1 - Accession Number: 21510005; Authors: Hammer, Wendell A. 1; Affiliations: 1: Lt. Colonel, United States Air Force, Air University; Subject: Military aeronautics -- Study & teaching; Subject: Higher education; Subject: Air forces; Subject: Armed Forces; Subject: Individualized education programs; Subject: Civil-military relations; Subject: Educational innovations; Subject: Universities & colleges; Subject: United States; Number of Pages: 3p; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=21510005&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR ID - 2005-12031-009 AN - 2005-12031-009 AU - Hosmer, Clark L. T1 - Review of (Transactions of the Conference on) Morale--and the prevention and control of panic. JF - Journal of Applied Psychology JO - Journal of Applied Psychology JA - J Appl Psychol Y1 - 1954/02// VL - 38 IS - 1 SP - 67 EP - 68 CY - US PB - American Psychological Association SN - 0021-9010 SN - 1939-1854 N1 - Accession Number: 2005-12031-009. Partial author list: First Author & Affiliation: Hosmer, Clark L.; United States Air Force, US. Release Date: 20060327. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Review-Book. Language: English. Major Descriptor: Morale; Panic; Prevention; Public Opinion. Classification: Social Psychology (3000). Population: Human (10). Reviewed Item: New York Academy of Medicine; The Josiah Macy, Jr. Foundation. (Transactions of the Conference on) Morale--and the prevention and control of panic=New York: New York Academy of Medicine, no date. Pp. 75. No price cited; No Year Specified. Page Count: 2. Issue Publication Date: Feb, 1954. Copyright Statement: American Psychological Association. 1954. AB - Reviews the book, '(Transactions of the Conference on) Morale--and the prevention and control of panic,' by the New York Academy of Medicine and the Josiah Macy, Jr. Foundation. The reviewer notes that this publication is aimed at inspiring widespread consideration and study of morale and panic. Its audience is not defined but it appears to be officials who may have responsibility for controlling public morale and panic. There was little experimental evidence or firm knowledge about causes and control of public morale and panic disclosed during the conference. It is not clear that the aim of inspiring widespread consideration and study of morale and panic will be attained by publication of the transactions of the conference. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - morale KW - prevention KW - control KW - panic KW - 1954 KW - Morale KW - Panic KW - Prevention KW - Public Opinion KW - 1954 U2 - New York Academy of Medicine; The Josiah Macy, Jr. Foundation. (No Year Specified); (Transactions of the Conference on) Morale--and the prevention and control of panic; New York: New York Academy of Medicine, no date. Pp. 75. No price cited DO - 10.1037/h0052063 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-12031-009&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR ID - 2005-07819-001 AN - 2005-07819-001 AU - Wallen, Vincent T1 - Air Force Clinical Psychology Duty Assignments. JF - American Psychologist JO - American Psychologist JA - Am Psychol Y1 - 1953/09// VL - 8 IS - 9 SP - 524 EP - 524 CY - US PB - American Psychological Association SN - 0003-066X SN - 1935-990X N1 - Accession Number: 2005-07819-001. Partial author list: First Author & Affiliation: Wallen, Vincent; United States Air Force, US. Release Date: 20050816. Publication Type: Journal (0100), Peer Reviewed Journal (0110). Format Covered: Print. Document Type: Comment/Reply. Language: English. Major Descriptor: Air Force Personnel; Clinical Psychology; Scientific Communication. Minor Descriptor: Occupational Status. Classification: Military Psychology (3800); Professional Psychological & Health Personnel Issues (3400). Population: Human (10). References Available: Y. Page Count: 1. Issue Publication Date: Sep, 1953. Copyright Statement: American Psychological Association. 1953. AB - In regard to Robert M. Allen's article 'What Is Clinical Psychology' in the October, 1952 'American Psychologist,' I would like to add that the Air Force has modified its levels of Clinical Psychology duty assignments. (PsycINFO Database Record (c) 2016 APA, all rights reserved) KW - clinical psychology duty assignments KW - Air Force KW - 1953 KW - Air Force Personnel KW - Clinical Psychology KW - Scientific Communication KW - Occupational Status KW - 1953 DO - 10.1037/h0056565 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2005-07819-001&site=ehost-live&scope=site DP - EBSCOhost DB - psyh ER - TY - JOUR AU - TOMASIC, DINKO T1 - INTERRELATIONS BETWEEN BOLSHEVIK IDEOLOGY AND THE STRUCTURE OF SOVIET SOCIETY. JO - American Sociological Review JF - American Sociological Review Y1 - 1951/04// VL - 16 IS - 2 M3 - Article SP - 137 EP - 148 SN - 00031224 AB - The article discusses the interrelations between Bolshevism and the social structure of the Soviet Union. During the 19th century, the Russian radical intelligentsia overthrew Czardom to seize power for themselves. The language and the behavior of the Bolsheviks is stated to have been affected by hatred and contempt. The article further informs that even after a civil war and seizure of power by Bolshevik leaders, their mentality and practices did not change. Their main aim was to eternalize their gains. Gradually, the socialist idea of freedom was seen being replaced by the contention of high output and specialization. The article questions whether the Bolshevik controls were sufficient to counteract the tendencies which affect the stability of the Soviet social system. KW - SOCIAL structure KW - POWER (Social sciences) KW - INDUSTRIAL productivity KW - BOLSHEVISM KW - COMMUNISM KW - CIVIL war KW - SOCIALISM KW - SOVIET Union KW - DOM tvorchestva soiuza sovetskikh kinematografistov (Russia) N1 - Accession Number: 34320192; TOMASIC, DINKO 1; Affiliations: 1: Human Resources Research Institute, United States Air Force Air University.; Issue Info: Apr51, Vol. 16 Issue 2, p137; Thesaurus Term: SOCIAL structure; Thesaurus Term: POWER (Social sciences); Thesaurus Term: INDUSTRIAL productivity; Subject Term: BOLSHEVISM; Subject Term: COMMUNISM; Subject Term: CIVIL war; Subject Term: SOCIALISM; Subject: SOVIET Union ; Company/Entity: DOM tvorchestva soiuza sovetskikh kinematografistov (Russia); Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=34320192&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - AU - Myers, Eugene E.1 AU - Peterson, John C.2 T1 - Teacher Preparation at Air University. JO - Journal of Higher Education JF - Journal of Higher Education J1 - Journal of Higher Education PY - 1950/04// Y1 - 1950/04// VL - 21 IS - 4 CP - 4 M3 - Article SP - 194 EP - 234 SN - 00221546 AB - The article talks about the preparation of teachers at Air University. The need for professional preparation of college teachers has long been acknowledged but has been hampered by the tradition of civilian education. Nevertheless, it was focused on and emphasized during the Second World War. It was also intensified by the Armed Forces tradition of transferring officers to new assignments every three years. More information about the subject matter is given and more issues are discussed in the article. KW - College teachers -- Training of KW - Higher education KW - Discussion in education KW - Armed Forces KW - College teachers -- Education KW - Education & state KW - World War, 1939-1945 KW - Air University (U.S.) KW - Journal of Higher Education (Periodical) N1 - Accession Number: 21500889; Authors: Myers, Eugene E. 1; Peterson, John C. 2; Affiliations: 1: Division Director of the Academic Instructor Division, United States Air Force Special Staff School, Craig Air Force Base, Alabama; 2: Professor of Psychology, Kansas State University; Subject: College teachers -- Training of; Subject: Air University (U.S.); Subject: Higher education; Subject: Discussion in education; Subject: Armed Forces; Subject: College teachers -- Education; Subject: Education & state; Subject: World War, 1939-1945; Subject: Journal of Higher Education (Periodical); Number of Pages: 8p; Illustrations: 2 Charts; Record Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=21500889&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - AU - Andregg, Neal B.1 T1 - A Collection of Papers. JO - Journal of Higher Education JF - Journal of Higher Education J1 - Journal of Higher Education PY - 1950/04// Y1 - 1950/04// VL - 21 IS - 4 CP - 4 M3 - Book Review SP - 220 EP - 220 SN - 00221546 AB - The article reviews the book "The Measurement of Student Adjustment and Achievement" by Wilma T. Donahue, Clyde H. Coombs and Robert M. W. Travers. KW - Nonfiction KW - Student adjustment KW - Donahue, Wilma T. KW - Coombs, Clyde H. KW - Travers, Robert M. W. KW - Measurement of Student Adjustment & Achievement, The (Book) N1 - Accession Number: 21500901; Authors: Andregg, Neal B. 1; Affiliations: 1: Educational Advisory Staff, United States Air Force; Subject: Measurement of Student Adjustment & Achievement, The (Book); Subject: Donahue, Wilma T.; Subject: Coombs, Clyde H.; Subject: Travers, Robert M. W.; Subject: Student adjustment; Subject: Nonfiction; Number of Pages: 3/4p; Record Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lls&AN=21500901&site=ehost-live&scope=site DP - EBSCOhost DB - lls ER - TY - JOUR T1 - HIV testing patterns for United States Air Force personnel, 2008-2012. AU - Kugblenu, R. K. AU - Paulin, P. S. AU - Tastad, K. J. AU - Okulicz, J. F. JO - Public Health JF - Public Health Y1 - 2016/// VL - 133 SP - 91 EP - 98 CY - Oxford; UK PB - Elsevier Ltd SN - 0033-3506 AD - Kugblenu, R. K.: United States Air Force School of Aerospace Medicine, Public Health and Preventive Medicine Department, Epidemiology Consult Service, Wright-Patterson AFB, Ohio, USA. N1 - Accession Number: 20163183973. Publication Type: Journal Article. Language: English. Number of References: 31 ref. Subject Subsets: Public Health N2 - Objective: This study evaluated 3rd generation human immunodeficiency virus (HIV) test patterns and HIV infection rates in the United States Air Force (USAF). Study design: Retrospective database study. Methods: HIV enzyme-linked immunoassay (ELISA) and Western blot tests were analysed for all USAF personnel from 2008 to 2012. For new HIV cases, unadjusted and adjusted annual rates were calculated per 100,000 persons. Results: In total, 1,608,665 tests were performed in 626,298 individuals, with a reactive ELISA observed in 809 (0.001%) persons. Western blot (n=1949) results included 378 (19.4%) positive, 1283 (65.8%) negative, and 288 (15.0%) indeterminate (WBi). Unadjusted annual HIV rates were between 16.7 and 20.6 per 100,000 persons during the study period. The overall age-adjusted rate was 14.8 cases per 100,000 persons tested. Blacks/African Americans had the highest risk of HIV (risk ratio 7.9 [95% confidence interval 5.78, 9.95] compared to Whites). Conclusions: WBi results, which can cause delays in determining HIV status, were relatively common with the 3rd generation assay. However, this will be mitigated by a planned transition to a 4th generation assay. Although the overall rate of HIV in the USAF is lower than US civilian adults, HIV prevention efforts targeting young Blacks/African Americans may help to reduce HIV incidence in the USAF. KW - African Americans KW - blacks KW - databases KW - diagnosis KW - disease prevention KW - ELISA KW - ethnic groups KW - health KW - HIV infections KW - human diseases KW - human immunodeficiency viruses KW - immunoassay KW - infections KW - personnel KW - risk KW - risk reduction KW - USA KW - man KW - viruses KW - Lentivirus KW - Orthoretrovirinae KW - Retroviridae KW - RNA Reverse Transcribing Viruses KW - viruses KW - Homo KW - Hominidae KW - primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - data banks KW - employees KW - enzyme linked immunosorbent assay KW - human immunodeficiency virus infections KW - staff KW - United States of America KW - Diagnosis of Human Disease (VV720) (New March 2000) KW - Pathogen, Pest, Parasite and Weed Management (General) (HH000) KW - Techniques and Methodology (ZZ900) KW - Social Psychology and Social Anthropology (UU485) (New March 2000) KW - Prion, Viral, Bacterial and Fungal Pathogens of Humans (VV210) (New March 2000) KW - Non-drug Therapy and Prophylaxis of Humans (VV710) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20163183973&site=ehost-live&scope=site UR - http://www.sciencedirect.com/science/journal/00333506 UR - email: jason.f.okulicz.mil@mail.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - One Health: identification and reporting of zoonotic diseases. AU - Eaton, M. JO - Advances in Small Animal Medicine and Surgery JF - Advances in Small Animal Medicine and Surgery Y1 - 2016/// VL - 29 IS - 4 SP - 1 EP - 2 CY - Philadelphia; USA PB - Elsevier Inc. SN - 1041-7826 AD - Eaton, M.: United States Air Force, Frederick, Maryland, USA. N1 - Accession Number: 20163158969. Publication Type: Journal Article. Language: English. Number of References: 6 ref. Subject Subsets: World Agriculture, Economics & Rural Sociology; Veterinary Science KW - aetiology KW - animal diseases KW - data collection KW - diagnosis KW - disease control KW - disease prevalence KW - disease prevention KW - disease transmission KW - epidemiology KW - pets KW - zoonoses KW - cats KW - dogs KW - Felis KW - Felidae KW - Fissipeda KW - carnivores KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - Canis KW - Canidae KW - causal agents KW - data logging KW - etiology KW - pet animals KW - zoonotic infections KW - Information and Documentation (CC300) KW - Veterinary Economics (EE117) (New March 2000) KW - Pets and Companion Animals (LL070) KW - Prion, Viral, Bacterial and Fungal Pathogens of Animals (LL821) (New March 2000) KW - Protozoan, Helminth, Mollusc and Arthropod Parasites of Animals (LL822) (New March 2000) KW - Diagnosis of Animal Diseases (LL886) (New March 2000) KW - Prion, Viral, Bacterial and Fungal Pathogens of Humans (VV210) (New March 2000) KW - Protozoan, Helminth and Arthropod Parasites of Humans (VV220) (New March 2000) KW - Public Health Pests, Vectors and Intermediate Hosts (VV230) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20163158969&site=ehost-live&scope=site UR - http://www.advancesinsmallanimal.com/article/S1041-7826(16)30001-9/abstract DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Active duty women's perceptions of breast-feeding support in the military setting. AU - Martin, S. E. AU - Drake, E. AU - Yoder, L. AU - Gibson, M. AU - Litke, C. A. JO - Military Medicine JF - Military Medicine Y1 - 2015/// VL - 180 IS - 11 SP - 1154 EP - 1160 CY - Bethesda; USA PB - Association of Military Surgeons of the US SN - 0026-4075 AD - Martin, S. E.: United States Air Force, 728 Vandenberg Drive, Biloxi, MS 39531, USA. N1 - Accession Number: 20153424615. Publication Type: Journal Article. Language: English. Number of References: 16 ref. Subject Subsets: Dairy Science N2 - Background: The purpose of this study is to evaluate the current perceptions of breast-feeding support for active duty women serving in the U.S. Armed Forces. Methods: An online survey based on the Workplace Breastfeeding Support Scale (WBSS) was used to collect data from active duty military mothers. Data were collected and analyzed using SPSS software to evaluate active duty women's perceptions of breast-feeding support in the military. Results: 318 active duty women participated in the online survey. The average WBSS scores for active duty women was 50.20 (SD=15.75). Comparing WBSS scores and branch of service, women in the Army had significantly lower WBSS scores (M=45.85) then women in the Air Force (M=53.96, p<0.001). Enlisted women had significantly lower scores (M=47.12) than officers (M=54.62, p<0.001). Also noted were significantly lower scores of active duty women who were Hispanic (M=44.30) and women who had lower levels of education (M=46.90, p=0.006). Conclusions: The Department of Defense may be able to improve breast-feeding rates for all active duty mothers by implementing and adhering to lactation policies and focusing support efforts for enlisted women in all branches of service. KW - breast feeding KW - human milk KW - infants KW - lactating women KW - military personnel KW - women KW - USA KW - man KW - Homo KW - Hominidae KW - primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - breast milk KW - United States of America KW - Milk and Dairy Produce (QQ010) KW - Women (UU500) KW - Diet Studies (VV110) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20153424615&site=ehost-live&scope=site UR - http://publications.amsus.org/doi/abs/10.7205/MILMED-D-14-00498 DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Estimates of pertussis vaccine effectiveness in United States air force pediatric dependents. AU - Wolff, G. AU - Bell, M. AU - Escobar, J. AU - Ruiz, S. JO - Vaccine JF - Vaccine Y1 - 2015/// VL - 33 IS - 28 SP - 3228 EP - 3233 CY - Oxford; UK PB - Elsevier Ltd SN - 0264-410X AD - Wolff, G.: United States Air Force School of Aerospace Medicine, 2510 5th Street, Bldg 840, Wright-Patterson AFB, OH 45433, USA. N1 - Accession Number: 20153250526. Publication Type: Journal Article. Language: English. Number of References: 30 ref. Subject Subsets: Public Health N2 - Background: Pertussis vaccination compliance is critical for reduction in the prevalence of disease; however, the current acellular pertussis vaccine may not provide sufficient protection from infection. This study examined acellular pertussis vaccine effectiveness (VE) for Air Force dependents less than 12 years of age. Methods: We conducted a case-control study among Air Force pediatric dependents from 2011 to 2013, comparing cases with positive pertussis test results to controls who received the same lab tests with a negative result. Our study population was categorized by age group and vaccination status based on the Centers for Disease Control and Prevention recommended pertussis vaccination schedule. VE was calculated with respect to vaccination status and pertussis lab results. Results: We compared 27 pertussis laboratory positive cases with 974 pertussis laboratory negative controls, 2 months to <12 years old. Comparing completely vaccinated to non-vaccinated patients, the overall VE was 78.3% (95% confidence interval (CI): 48.6, 90.8; p<0.001). VE was highest among those 15 months to <6 years old: 97.6% (95% CI: 78.5, 99.7; p<0.001). Children 6 to <12 years old had the lowest VE: 48.5% (95% CI: -74.0, 84.7; p=0.28). Comparing partially vaccinated patients to nonvaccinated patients yielded 64.2% (95% CI: -7.2, 88.1; p=0.06) overall VE. Conclusions: Acellular pertussis vaccination was effective at preventing laboratory confirmed pertussis among our Air Force pediatric dependent population, with highest protection among completely vaccinated, young children. Older children received the lowest amount of protection. Partial vaccination had near significant protection. Our overall calculated pertussis VE corroborates other pertussis VE studies looking at similar age groups. KW - acellular vaccines KW - age differences KW - age groups KW - bacterial diseases KW - case-control studies KW - children KW - disease prevention KW - health protection KW - human diseases KW - immune response KW - immunization KW - pertussis KW - vaccination KW - vaccines KW - USA KW - Bordetella pertussis KW - man KW - Bordetella KW - Alcaligenaceae KW - Burkholderiales KW - Betaproteobacteria KW - Proteobacteria KW - Bacteria KW - bacterium KW - prokaryotes KW - Homo KW - Hominidae KW - primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - bacterial infections KW - bacterioses KW - bacterium KW - immune sensitization KW - immunity reactions KW - immunological reactions KW - United States of America KW - whooping cough KW - Host Resistance and Immunity (HH600) KW - Prion, Viral, Bacterial and Fungal Pathogens of Humans (VV210) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20153250526&site=ehost-live&scope=site UR - http://www.sciencedirect.com/science/journal/0264410X UR - email: greg.wolff.1@us.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Role of adenoviruses in obesity. AU - Voss, J. D. AU - Atkinson, R. L. AU - Dhurandhar, N. V. JO - Reviews in Medical Virology JF - Reviews in Medical Virology Y1 - 2015/// VL - 25 IS - 6 SP - 379 EP - 387 CY - Chichester; UK PB - Wiley-Blackwell SN - 1052-9276 AD - Voss, J. D.: Epidemiology Consult Division, United States Air Force School of Aerospace Medicine, 2510 Fifth Street, Building 840, Wright-Patterson AFB, OH 45433, USA. N1 - Accession Number: 20153434338. Publication Type: Journal Article. Language: English. Number of References: 69 ref. Subject Subsets: Human Nutrition N2 - Five human adenovirus subtypes, Ad5, Ad9, Ad31, Ad36, and Ad37, and a non-human adenovirus, SMAM1, are linked to increased adiposity in vitro or in vivo. Experimental infection with Ad5, Ad36, and Ad37 produced excess adiposity or weight gain in animals. Ad9 and Ad31 increase fat storage in tissue culture but are not associated with animal or human obesity. Ad36 is the most extensively studied adipogenic adenovirus and is correlated with some measure of overweight/obesity in humans from multiple countries. The correlation is strongest and most consistent in children, but some studies have been negative in both children and adults. About 30% of overweight/obese children and adults and about 15-20% of lean individuals have Ad36 antibodies in epidemiologic studies. The mechanisms of action of Ad36 are due to the early gene 4, open reading frame 1 (E4-ORF1). Blocking E4-ORF1 with siRNA prevents the effects of Ad36, and transfection of lentivirus with E4-ORF1 reproduces the Ad36 effects. Increased adiposity is caused by stimulation of at least three pathways by Ad36. Cell membrane glucose receptors are increased via the Ras pathway, leading to increased intracellular glucose. Fatty acid synthase is increased, which converts the glucose to fatty acids. Finally, peroxisome proliferator-activated receptor-γ is increased, resulting in differentiation of adult stem cells into adipocytes. Conclusions: several adenoviruses increase adiposity in animals and are associated with obesity in humans. There are critical gaps in the literature needing further investigation including evaluation of other adenovirus subtypes and better research designs to improve the strength of causal inferences. KW - adults KW - body mass index KW - cell membranes KW - children KW - obesity KW - overweight KW - man KW - Mastadenovirus KW - Homo KW - Hominidae KW - primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - Adenoviridae KW - dsDNA Viruses KW - DNA Viruses KW - viruses KW - fatness KW - Nutrition Related Disorders and Therapeutic Nutrition (VV130) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20153434338&site=ehost-live&scope=site UR - http://onlinelibrary.wiley.com/doi/10.1002/rmv.1852/full UR - email: jameson.voss@us.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Pneumonia outbreak caused by Chlamydophila pneumoniae among US Air Force Academy cadets, Colorado, USA. AU - Fajardo, K. A. AU - Zorich, S. C. AU - Voss, J. D. AU - Thervil, J. W. JO - Emerging Infectious Diseases JF - Emerging Infectious Diseases Y1 - 2015/// VL - 21 IS - 6 SP - 1049 EP - 1051 CY - Atlanta; USA PB - National Center for Infectious Diseases, Centers for Disease Control and Prevention SN - 1080-6040 AD - Fajardo, K. A.: Preventive Medicine, US Air Force Academy, Colorado Springs, Colorado, USA. N1 - Accession Number: 20153195393. Publication Type: Journal Article. Language: English. Number of References: 9 ref. Subject Subsets: Public Health N2 - During October 2013-May 2014, there were 102 cases of pneumonia diagnosed in US Air Force Academy cadets. A total of 73% of tested nasal washes contained Chlamydophila pneumoniae. This agent can be considered to be present on campus settings during outbreaks with numerous, seemingly disconnected cases of relatively mild pneumonia. KW - bacterial diseases KW - bacterial pneumonia KW - diagnosis KW - disease prevalence KW - epidemiology KW - human diseases KW - lungs KW - outbreaks KW - pneumonia KW - soldiers KW - Colorado KW - USA KW - Chlamydophila pneumoniae KW - man KW - Chlamydophila KW - Chlamydiaceae KW - Chlamydiales KW - Chlamydiae KW - Bacteria KW - bacterium KW - prokaryotes KW - Great Plains States of USA KW - USA KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - Mountain States of USA KW - Western States of USA KW - Homo KW - Hominidae KW - primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - bacterial infections KW - bacterioses KW - bacterium KW - United States of America KW - Prion, Viral, Bacterial and Fungal Pathogens of Humans (VV210) (New March 2000) KW - Diagnosis of Human Disease (VV720) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20153195393&site=ehost-live&scope=site UR - http://wwwnc.cdc.gov/eid/pdfs/vol21no6_pdf-version.pdf UR - email: kevin.fajardo@us.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Effect of soil moisture on chlorine deposition. AU - Hearn, J. AU - Eichler, J. AU - Hare, C. AU - Henley, M. JO - Journal of Hazardous Materials JF - Journal of Hazardous Materials Y1 - 2014/// VL - 267 SP - 81 EP - 87 CY - Oxford; UK PB - Elsevier Ltd SN - 0304-3894 AD - Hearn, J.: Air Force Research Laboratory, Airbase Technologies Division, 139 Barnes Dr. Suite 2, Tyndall AFB, FL 32403, USA. N1 - Accession Number: 20143143315. Publication Type: Journal Article. Language: English. Registry Number: 16887-00-6, 7782-50-5. Subject Subsets: Soils & Fertilizers; Irrigation & Drainage N2 - The effect of soil moisture on chlorine (Cl2) deposition was examined in laboratory chamber experiments at high Cl2 exposures by measuring the concentration of chloride (Cl-) in soil columns. Soil mixtures with varying amounts of clay, sand, and organic matter and with moisture contents up to 20% (w/w) were exposed to ~3×104 ppm Cl2 vapor. For low water content soils, additional water increased the reaction rate as evidenced by higher Cl- concentration at higher soil moisture content. Results also showed that the presence of water restricted transport of Cl2 into the soil columns and caused lower overall deposition of Cl2 in the top 0.48-cm layer of soil when water filled ~60% or more of the void space in the column. Numerical solutions to partial differential equations of Fick's law of diffusion and a simple rate law for Cl2 reaction corroborated conclusions derived from the data. For the soil mixtures and conditions of these experiments, moisture content that filled 30-50% of the available void space yielded the maximum amount of Cl2 deposition in the top 0.48 cm of soil. KW - chloride KW - chlorine KW - clay KW - deposition KW - sand KW - soil organic matter KW - soil water KW - soil water content KW - organic matter in soil KW - soil moisture KW - Soil Chemistry and Mineralogy (JJ200) KW - Soil Physics (JJ300) KW - Human Wastes and Refuse (XX300) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20143143315&site=ehost-live&scope=site UR - http://www.sciencedirect.com/science/article/pii/S0304389413009746 UR - email: jhearn@leeuniversity.edu DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - A comparison of obesity prevalence: Military Health System and United States populations, 2009-2012. AU - Eilerman, P. A. AU - Herzog, C. M. AU - Luce, B. K. AU - Chao, S. Y. AU - Walker, S. M. AU - Zarzabal, L. A. AU - Carnahan, D. H. JO - Military Medicine JF - Military Medicine Y1 - 2014/// VL - 179 IS - 5 SP - 462 EP - 470 CY - Bethesda; USA PB - Association of Military Surgeons of the US SN - 0026-4075 AD - Eilerman, P. A.: Healthcare Informatics Division, United States Air Force Medical Support Agency, 3515 S General McMullen Suite 200, San Antonio, TX 78226, USA. N1 - Accession Number: 20143211125. Publication Type: Journal Article. Language: English. Number of References: 43 ref. Subject Subsets: Human Nutrition N2 - Overweight and obesity prevalence has increased over the past 30 years. Few studies have looked at the enrolled Military Health System (MHS) population (2.2 million per year). This descriptive study examined trends in overweight and obesity in both children and adults from fiscal years 2009 to 2012 and compared them to the U.S. population. Prevalence in MHS children decreased over time for overweight (14.2-13.8%) and obesity (11.7-10.9%). Active duty adults showed an increase in overweight prevalence (52.7-53.4%) and a decrease in obesity prevalence (18.9-18.3%). For nonactive duty, both overweight and obesity prevalence remained relatively unchanged around 33%. For both children and adults, overweight and obesity prevalence increased with age, except for obesity in the nonactive duty ≥65 subgroup. When compared to the United States by gender and age, MHS children generally had a lower overweight and obesity prevalence, active duty adults had higher overweight and lower obesity prevalence, and nonactive duty adults had comparable overweight and obesity prevalence, except for obesity in both men in the 40 to 59 subgroup and women in ≥60 subgroup. More research on the MHS population is needed to identify risk factors and modifiable health behaviors that could defeat the disease of obesity. KW - body mass index KW - children KW - epidemiology KW - obesity KW - overweight KW - USA KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - fatness KW - United States of America KW - Nutrition Related Disorders and Therapeutic Nutrition (VV130) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20143211125&site=ehost-live&scope=site UR - http://publications.amsus.org/doi/abs/10.7205/MILMED-D-13-00430 DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Adenovirus 36 antibodies associated with clinical diagnosis of overweight/obesity but not BMI gain: a military cohort study. AU - Voss, J. D. AU - Burnett, D. G. AU - Olsen, C. H. AU - Haverkos, H. W. AU - Atkinson, R. L. JO - Journal of Clinical Endocrinology & Metabolism JF - Journal of Clinical Endocrinology & Metabolism Y1 - 2014/// VL - 99 IS - 9 SP - E1708 EP - E1712 CY - Chevy Chase; USA PB - Endocrine Society SN - 0021-972X AD - Voss, J. D.: Epidemiology Consult Service, United States Air Force School of Aerospace Medicine, Wright Patterson Air Force Base, OH 45433, USA. N1 - Accession Number: 20143352291. Publication Type: Journal Article. Language: English. Number of References: 19 ref. Subject Subsets: Public Health; Human Nutrition N2 - Context: Obesity is a public health priority, which also threatens national security. Adenovirus 36 (Adv36) increases adiposity in animals and Adv36 antibody status is associated with human obesity, but it is unknown whether infection predicts the development of human adiposity. Objective: The objective of the study was to assess infection status and subsequent weight gain. Design: The study had a retrospective cohort design. Setting: The study was conducted at Air Force fitness testing and clinical encounters. Participants: Participants included Air Force male enlistees, aged 18-22 years, with a baseline body mass index (BMI) of 20-30 kg/m2 followed up from enlistment (beginning in 1995) until 2012 or separation from the Air Force. Exposure: Exposure included Adv36 infection status at the time of entry. Main Outcome Measure: Follow-up BMI, the primary outcome, and diagnosis of overweight/obesity by the International Classification of Diseases, ninth revision V85.25+ and 278.0 series (secondary outcome) were recorded. Results: The last recorded follow-up BMI was similar among infected and uninfected, 26.4 and 27.2 kg/m2, respectively (P>.05). However, infected individuals had a higher hazard of a medical provider's diagnosis of overweight/obese over time (hazard ratio 1.8, 95% confidence interval 1.0-3.1, P=.04), adjusted for baseline BMI. Additionally, infected individuals who were lean at baseline (BMI of 22.5 kg/m2) had a 3.9 times greater hazard of developing an overweight/obese clinical diagnosis (95% confidence interval 1.5-9.7, P=.004) compared with uninfected lean individuals after adjusting for interaction (P=.03) between infection and baseline BMI. Conclusions: The presence of Adv36 antibodies was not associated with higher BMI at baseline or follow-up within this military population. However, being infected was associated with developing a clinical diagnosis of overweight/obesity, especially among those lean at baseline. KW - antibodies KW - body fat KW - body mass index KW - body weight KW - diagnosis KW - human diseases KW - obesity KW - public health KW - viral diseases KW - weight gain KW - Ohio KW - USA KW - man KW - Mastadenovirus KW - Homo KW - Hominidae KW - primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - Adenoviridae KW - dsDNA Viruses KW - DNA Viruses KW - viruses KW - Corn Belt States of USA KW - North Central States of USA KW - USA KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - East North Central States of USA KW - fatness KW - United States of America KW - viral infections KW - Nutrition Related Disorders and Therapeutic Nutrition (VV130) KW - Prion, Viral, Bacterial and Fungal Pathogens of Humans (VV210) (New March 2000) KW - Diagnosis of Human Disease (VV720) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20143352291&site=ehost-live&scope=site UR - http://press.endocrine.org/doi/abs/10.1210/jc.2014-1863 DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Ixodid ticks associated with feral swine in Texas. AU - Sanders, D. M. AU - Schuster, A. L. AU - McCardle, P. W. AU - Strey, O. F. AU - Blankenship, T. L. AU - Teel, P. D. JO - Journal of Vector Ecology JF - Journal of Vector Ecology Y1 - 2013/// VL - 38 IS - 2 SP - 361 EP - 373 CY - Boston; USA PB - Wiley-Blackwell SN - 1948-7134 AD - Sanders, D. M.: U.S. Air Force Research Laboratory/USAFSAM, Wright-Patterson AFB, OH 45433-7408, USA. N1 - Accession Number: 20133398286. Publication Type: Journal Article. Language: English. Number of References: many ref. Subject Subsets: Pig Science; Medical & Veterinary Entomology N2 - Ixodid ticks were collected from feral swine in eight Texas ecoregions from 2008-2011. Sixty-two percent of 806 feral swine were infested with one or more of the following species: Amblyomma americanum, A. cajennense, A. maculatum, Dermacentor albipictus, D. halli, D. variabilis, and Ixodes scapularis. Juvenile and adult feral swine of both sexes were found to serve as host to ixodid ticks. Longitudinal surveys of feral swine at four geographic locations show persistent year-round tick infestations of all gender-age classes for tick species common to their respective geographic locations and ecoregions. Amblyomma americanum, A. cajennense, A. maculatum and D. variabilis were collected from 66% of feral swine harvested through an abatement program in seven ecoregions from March to October in 2009. These results indicate westward geographic expansion of D. variabilis. Summary results show feral swine are competent hosts for ixodid species responsible for the transmission of pathogens and diminished well-being in livestock, wildlife, and humans. KW - adults KW - boars KW - disease prevalence KW - epidemiology KW - feral pigs KW - geographical distribution KW - hosts KW - sows KW - tick infestations KW - Texas KW - USA KW - Amblyomma americanum KW - Amblyomma cajennense KW - Amblyomma maculatum KW - Dermacentor KW - Dermacentor albipictus KW - Dermacentor variabilis KW - Ixodes scapularis KW - pigs KW - Amblyomma KW - Ixodidae KW - Metastigmata KW - Acari KW - Arachnida KW - arthropods KW - invertebrates KW - animals KW - eukaryotes KW - Dermacentor KW - Ixodes KW - Great Plains States of USA KW - USA KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - Gulf States of USA KW - Southern Plains States of USA KW - West South Central States of USA KW - Southern States of USA KW - Southwestern States of USA KW - Sus scrofa KW - Sus KW - Suidae KW - Suiformes KW - Artiodactyla KW - mammals KW - vertebrates KW - Chordata KW - Cayenne tick KW - Dermacentor halli KW - Gulf Coast tick KW - hogs KW - lone star tick KW - swine KW - United States of America KW - Biological Resources (Animal) (PP710) KW - Pathogens, Parasites and Infectious Diseases (Wild Animals) (YY700) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20133398286&site=ehost-live&scope=site UR - http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1948-7134 UR - email: pteel@tamu.edu DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Mid-season influenza vaccine effectiveness 2011-2012: a Department of Defense Global, Laboratory-based, Influenza Surveillance System case-control study estimate. AU - MacIntosh, V. H. AU - Tastad, K. J. AU - Eick-Cost, A. A. JO - Vaccine JF - Vaccine Y1 - 2013/// VL - 31 IS - 13 SP - 1651 EP - 1655 CY - Oxford; UK PB - Elsevier Ltd SN - 0264-410X AD - MacIntosh, V. H.: United States Air Force School of Aerospace Medicine, 2510 5th Street, Wright-Patterson Air Force Base, OH 45433-7193, USA. N1 - Accession Number: 20133148447. Publication Type: Journal Article. Language: English. Number of References: 16 ref. Subject Subsets: Public Health N2 - Mid-season influenza vaccine effectiveness (VE) was estimated using data from surveillance conducted by the Department of Defense Global, Laboratory-based, Influenza Surveillance Program at the United States Air Force School of Aerospace Medicine. Respiratory specimens from geographically diverse military members and dependents who sought medical care 2 October 2011-3 March 2012 were analyzed by viral culture and real-time reverse transcriptase-polymerase chain reaction; influenza viruses were typed and sequenced. Controls were influenza test-negative. Overall, vaccine type and subtype-specific VE were estimated using logistic regression. Adjusted VE (95% confidence interval) was: overall 77 (57-87)%; live attenuated vaccine (LAIV) 74 (48-87)%; trivalent inactivated vaccine (TIV) 75 (48-88)%. H3 component-specific VE was: overall 77 (52-89)%; LAIV 78 (47-91)%; TIV 74 (38-89)%; data were insufficient for separate H1 and B estimates. Both vaccine types showed moderate to high VE, indicating significant protection against circulating influenza strains. KW - case-control studies KW - culture techniques KW - disease prevention KW - health protection KW - human diseases KW - immunization KW - inactivated vaccines KW - influenza KW - influenza viruses KW - live vaccines KW - lungs KW - military personnel KW - monitoring KW - polymerase chain reaction KW - real time PCR KW - respiratory diseases KW - reverse transcriptase PCR KW - vaccination KW - vaccines KW - USA KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - attenuated vaccines KW - flu KW - immune sensitization KW - killed vaccines KW - lung diseases KW - PCR KW - reverse transcriptase polymerase chain reaction KW - RT-PCR KW - surveillance systems KW - United States of America KW - Host Resistance and Immunity (HH600) KW - Prion, Viral, Bacterial and Fungal Pathogens of Humans (VV210) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20133148447&site=ehost-live&scope=site UR - http://www.sciencedirect.com/science/journal/0264410X UR - email: Victor.MacIntosh@us.af.mil\Katie.Tastad@wpafb.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Reported vectorborne and zoonotic diseases, U.S. Air Force, 2000-2011. AU - Anna, M. M. AU - Escobar, J. D. AU - Chapman, A. S. JO - Medical Surveillance Monthly Report JF - Medical Surveillance Monthly Report Y1 - 2012/// VL - 19 IS - 10 SP - 11 EP - 14 CY - Silver Spring; USA PB - Armed Forces Health Surveillance Center SN - 2158-0111 AD - Anna, M. M.: United States Air Force School of Aerospace Medicine, Department of Public Health and Preventive Medicine, Epidemiology Consult Service, Wright-Patterson Air Force Base, Ohio, USA. N1 - Accession Number: 20123378885. Publication Type: Journal Article. Language: English. Number of References: 9 ref. Subject Subsets: Public Health; Tropical Diseases; Medical & Veterinary Entomology; Protozoology N2 - During 2000-2011, U.S. Air Force Public Health Officers reported 770 cases of vectorborne and zoonotic diseases diagnosed at Air Force medical treatment facilities. Cases of Lyme disease accounted for 70 percent (n=538) of all cases and most cases of Lyme disease (57%) were reported from bases in the northeastern U.S. and in Germany. The annual numbers of reported Lyme disease cases were much higher during the last four years than earlier in the surveillance period. The next most commonly reported events were malaria (74 cases), Rocky Mountain spotted fever (RMSF) (41), Q fever (33), dengue (23), and leishmaniasis (20). These five infections and Lyme disease accounted for 95 percent of the reported conditions. Military service members accounted for a majority of the reported cases for most of the conditions, but family members and retirees accounted for most of the cases of Lyme disease and RMSF. Most reports of vectorborne and zoonotic diseases did not include mentions of recent travel. KW - armed forces KW - dengue KW - disease prevalence KW - disease surveys KW - epidemiology KW - families KW - human diseases KW - infectious diseases KW - leishmaniasis KW - Lyme disease KW - malaria KW - military personnel KW - Q fever KW - retired people KW - Rocky Mountain spotted fever KW - trends KW - vector-borne diseases KW - zoonoses KW - Germany KW - USA KW - Borrelia burgdorferi KW - Coxiella burnetii KW - Dengue virus KW - Leishmania KW - man KW - Plasmodium KW - Rickettsia rickettsii KW - Borrelia KW - Spirochaetaceae KW - Spirochaetales KW - Spirochaetes KW - Bacteria KW - prokaryotes KW - Coxiella KW - Coxiellaceae KW - Legionellales KW - Gammaproteobacteria KW - Proteobacteria KW - Flavivirus KW - Flaviviridae KW - positive-sense ssRNA Viruses KW - ssRNA Viruses KW - RNA Viruses KW - viruses KW - Developed Countries KW - European Union Countries KW - OECD Countries KW - Western Europe KW - Europe KW - Trypanosomatidae KW - Kinetoplastida KW - Sarcomastigophora KW - Protozoa KW - invertebrates KW - animals KW - eukaryotes KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - Plasmodiidae KW - Haemospororida KW - Apicomplexa KW - Rickettsia KW - Rickettsiaceae KW - Rickettsiales KW - Alphaproteobacteria KW - APEC countries KW - North America KW - America KW - abattoir fever KW - bacterium KW - Balkan grippe KW - communicable diseases KW - Derrick-Burnet disease KW - disease surveillance KW - leishmaniosis KW - lyme borreliosis KW - Nine Mile fever KW - pneumorickettsiosis KW - quadrilateral fever KW - query fever KW - United States Air Force KW - United States of America KW - zoonotic infections KW - Prion, Viral, Bacterial and Fungal Pathogens of Humans (VV210) (New March 2000) KW - Protozoan, Helminth and Arthropod Parasites of Humans (VV220) (New March 2000) KW - Occupational Health and Safety (VV900) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20123378885&site=ehost-live&scope=site UR - http://www.afhsc.mil/viewMSMR?file=2012/v19_n10.pdf#Page=11 DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Diagnosis of 2009 pandemic influenza A (pH1N1) and seasonal influenza using rapid influenza antigen tests, San Antonio, Texas, April-June 2009. AU - Lucas, P. M. AU - Morgan, O. W. AU - Gibbons, T. F. AU - Guerrero, A. C. AU - Maupin, G. M. AU - Butler, J. L. AU - Canas, L. C. AU - Fonseca, V. P. AU - Olsen, S. J. AU - MacIntosh, V. H. T3 - Special Issue: The 2009 H1N1 influenza pandemic: field and epidemiologic investigations. JO - Clinical Infectious Diseases JF - Clinical Infectious Diseases Y1 - 2011/// VL - 52 IS - Suppl. 1 SP - S116 EP - S122 CY - Oxford; UK PB - Oxford University Press SN - 1058-4838 AD - Lucas, P. M.: Department of Defense Global Laboratory-based Influenza Surveillance Program, United States Air Force School of Aerospace Medicine, 2513 Kennedy Cir, Bldg 180, Brooks City-Base, San Antonio, TX 78235, USA. N1 - Accession Number: 20113003251. Publication Type: Journal Article. Note: Special Issue: The 2009 H1N1 influenza pandemic: field and epidemiologic investigations. Language: English. Number of References: 27 ref. Subject Subsets: Public Health N2 - Clinicians frequently use influenza rapid antigen tests for diagnostic testing. We tested nasal wash samples from 1 April to 7 June 2009 from 1538 patients using the QuickVue Influenza A+B (Quidel) rapid influenza antigen test and compared the results with real-time reverse transcription polymerase chain reaction (rRT-PCR) assay (gold standard). The prevalence of 2009 pandemic influenza A (pH1N1) was 1.98%, seasonal influenza type A .87%, and seasonal influenza type B 2.07%. The sensitivity and specificity of the rapid test for pH1N1 was 20% (95% CI, 8-39) and 99% (95% CI, 98-99), for seasonal influenza type A 15% (95% CI, 2-45) and 99% (95% CI, 98-99), and for influenza type B was 31% (95% CI, 9-61) and 99% (95% CI, 98-99.7). Rapid influenza antigen tests were of limited use at a time when the prevalence of pH1N1 and seasonal influenza in the United States was low. Clinicians should instead rely on clinical impression and laboratory diagnosis by rRT-PCR. KW - antigen testing KW - diagnosis KW - diagnostic techniques KW - human diseases KW - influenza A KW - laboratory diagnosis KW - polymerase chain reaction KW - real time PCR KW - Texas KW - USA KW - Influenza A virus KW - man KW - Influenzavirus A KW - Orthomyxoviridae KW - negative-sense ssRNA viruses KW - ssRNA viruses KW - RNA viruses KW - viruses KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - Great Plains States of USA KW - USA KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - Gulf States of USA KW - Southern Plains States of USA KW - West South Central States of USA KW - Southern States of USA KW - Southwestern States of USA KW - antigen detection KW - antigen tests KW - H1N1 subtype Influenza A virus KW - PCR KW - United States of America KW - Prion, Viral, Bacterial and Fungal Pathogens of Humans (VV210) (New March 2000) KW - Diagnosis of Human Disease (VV720) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20113003251&site=ehost-live&scope=site UR - http://cid.oxfordjournals.org/content/52/suppl_1/S116.full UR - email: victor.macintosh@us.af.mil\omorgan@cdc.gov DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Association of provider scope of practice with successful transition for youth with special health care needs. AU - Nishikawa, B. R. AU - Daaleman, T. P. AU - Nageswaran, S. JO - Journal of Adolescent Health JF - Journal of Adolescent Health Y1 - 2011/// VL - 48 IS - 2 SP - 209 EP - 211 CY - New York; USA PB - Elsevier SN - 1054-139X AD - Nishikawa, B. R.: Epidemiology Consult Service, United States Air Force School of Aerospace Medicine, Brooks City-Base, Texas, USA. N1 - Accession Number: 20113048516. Publication Type: Journal Article. Language: English. Subject Subsets: Public Health N2 - Purpose: Youth with special health care needs (YSHCN) encounter unique challenges in the transition from pediatric to adult healthcare. Although discussing transition with healthcare providers can be beneficial, it is unclear whether the providers' scope of practice (child-only vs. lifespan-oriented) drives these discussions. We examined the association between scope of practice and transition-related services. Methods: We used caregivers' responses in the 2005-2006 National Survey of Children with Special Healthcare Needs. We compared transition outcomes for youth whose providers treated only children, and youth whose providers also treated adults (lifespan-oriented). Individual and household-level demographic factors were applied to logistic regression models. Results: Youth with lifespan-oriented providers were more likely than youth with child-only providers to have discussed changing health needs in adulthood (52% vs. 43%) and adult health insurance (24% vs. 21%). There was no difference in receiving encouragement toward self-responsibility (79% vs. 78%). These associations persisted after adjusting for demographics. Conclusions: YSHCN are more likely to report having discussed issues related to transition into adult healthcare if their providers treat adults as well as children. However, discussion involving adult health insurance in particular was lacking for all YSHCN. KW - adults KW - careproviders KW - health care KW - health insurance KW - youth KW - Texas KW - USA KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - Great Plains States of USA KW - USA KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - Gulf States of USA KW - Southern Plains States of USA KW - West South Central States of USA KW - Southern States of USA KW - Southwestern States of USA KW - United States of America KW - Health Economics (EE118) (New March 2000) KW - Health Services (UU350) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20113048516&site=ehost-live&scope=site UR - http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T80-50S2D9C-1&_user=10&_coverDate=02%2F28%2F2011&_rdoc=17&_fmt=high&_orig=browse&_origin=browse&_zone=rslt_list_item&_srch=doc-info(%23toc%235072%232011%23999519997%232872758%23FLA%23display%23Volume)&_cdi=5072&_sort=d&_docanchor=&_ct=19&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=2a321e4f9724079863d0c2576c1513d5&searchtype=a UR - email: brett.nishikawa@brooks.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Norovirus outbreak associated with person-to-person transmission, U.S. Air Force Academy, July 2011. AU - Chapman, A. S. AU - Witkop, C. T. AU - Escobar, J. D. AU - Schlorman, C. A. AU - DeMarcus, L. S. AU - Marmer, L. M. AU - Crum, M. E. JO - Medical Surveillance Monthly Report JF - Medical Surveillance Monthly Report Y1 - 2011/// VL - 18 IS - 11 SP - 2 EP - 5 CY - Silver Spring; USA PB - Armed Forces Health Surveillance Center AD - Chapman, A. S.: United States Air Force School of Aerospace Medicine, Epidemiology Consult Service, Wright-Patterson AFB, Ohio, USA. N1 - Accession Number: 20123001588. Publication Type: Journal Article. Language: English. Number of References: 5 ref. Subject Subsets: Public Health N2 - In July 2011, the U.S. Air Force School of Aerospace Medicine (USAFSAM) Epidemiology Consult Service investigated an ongoing outbreak of acute gastrointestinal (GI) illness - characterized by vomiting, nausea, diarrhea, and stomach cramps - that aff ected cadets and support personnel at a field training location at the U.S. Air Force Academy. Six outbreak-related stool specimens were confirmed by RT-PCR to be infected with norovirus, genogroup I. Overall, 290 cases (suspected and confirmed) of norovirus-related GI illness were recorded; the estimated attack rate among 1,359 cadets was 18%. The investigation suggested that norovirus was introduced into the field dining facility by one or more food service workers, possibly transmitted via common use serving utensils, and then further spread among cadets by person-toperson contact. Numbers of new cases sharply declined aft er ill cadets were segregated in separate tents for convalescence, and aft er all cadets moved from field billets (i.e., tents) to dormitories aft er completing the field training. KW - acute course KW - diarrhoea KW - disease control KW - disease incidence KW - disease transmission KW - epidemiology KW - faecal examination KW - gastrointestinal diseases KW - human diseases KW - human faeces KW - military personnel KW - military recruits KW - nausea KW - outbreaks KW - quarantine KW - symptoms KW - viral diseases KW - vomiting KW - Colorado KW - USA KW - man KW - Norovirus KW - Great Plains States of USA KW - USA KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - Mountain States of USA KW - Western States of USA KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - Caliciviridae KW - positive-sense ssRNA viruses KW - ssRNA viruses KW - RNA viruses KW - viruses KW - diarrhea KW - fecal examination KW - human feces KW - scouring KW - severe course KW - United States of America KW - viral infections KW - winter vomiting disease KW - winter vomiting virus KW - Prion, Viral, Bacterial and Fungal Pathogens of Humans (VV210) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20123001588&site=ehost-live&scope=site UR - http://www.afhsc.mil/viewMSMR?file=2011/v18_n11.pdf#Page=02 DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Thyroxine and free thyroxine levels in workers occupationally exposed to inorganic lead. AU - Bledsoe, M. L. AU - Pinkerton, L. E. AU - Silver, S. AU - Deddens, J. A. AU - Biagini, R. E. JO - Environmental Health Insights JF - Environmental Health Insights Y1 - 2011/// VL - 5 SP - 55 EP - 61 CY - Auckland; New Zealand PB - Libertas Academica SN - 1178-6302 AD - Bledsoe, M. L.: Occupational Medicine Services, 78th Aerospace Medicine Squadron, 78th Medical Group, United States Air Force, Robins Air Force Base, Georgia, USA. N1 - Accession Number: 20123068906. Publication Type: Journal Article. Language: English. Number of References: 27 ref. Registry Number: 7439-92-1, 51-48-9. Subject Subsets: Public Health N2 - Background: The effects of lead exposure on thyroid function are unclear. Methods: Serum thyroxine (T4) was evaluated among 137 lead-exposed workers and 83 non-exposed workers. Free thyroxine (FT4) was evaluated among a subset of these workers. Exposure metrics included blood lead level (BLL), which reflects recent exposure, zinc protoporphyrin (ZPP), a marker of intermediate-duration lead exposure, exposure duration, and estimated cumulative exposure. Multiple linear regression results were adjusted for age, race, and current smoking status. Results: Mean BLLs were 38.9 µg/dL in lead exposed workers and 2.1 µg/dL in non-exposed workers. The adjusted mean T4 and FT4 concentrations among exposed and non-exposed workers were similar. While T4 was not significantly related to any of the exposure metrics, FT4 was inversely related to the logged values of both exposure duration and cumulative exposure, but not to ZPP or BLL. Conclusions: The findings suggest that FT4 levels may be related to long-term lead exposure. KW - exposure KW - human diseases KW - lead KW - lead workers KW - occupational hazards KW - occupational health KW - thyroid function KW - thyroid gland KW - thyroxine KW - USA KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - thyroid KW - United States of America KW - Human Physiology and Biochemistry (VV050) KW - Human Toxicology and Poisoning (VV810) (New March 2000) KW - Occupational Health and Safety (VV900) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20123068906&site=ehost-live&scope=site UR - http://www.la-press.com/thyroxine-and-free-thyroxine-levels-in-workers-occupationally-exposed--article-a2719 UR - email: michael.bledsoe@us.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - A prospective study of depression following combat deployment in support of the wars in Iraq and Afghanistan. AU - Wells, T. S. AU - Leardmann, C. A. AU - Fortuna, S. O. AU - Smith, B. AU - Smith, T. C. AU - Ryan, M. A. K. AU - Boyko, E. J. AU - Blazer, D. JO - American Journal of Public Health JF - American Journal of Public Health Y1 - 2010/// VL - 100 IS - 1 SP - 90 EP - 99 CY - Washington; USA PB - American Public Health Association SN - 0090-0036 AD - Wells, T. S.: US Air Force Research Laboratory, Wright-Patterson AFB, Ohio, USA. N1 - Accession Number: 20103048086. Publication Type: Journal Article. Language: English. Number of References: 81 ref. Subject Subsets: Tropical Diseases; Rural Development N2 - Objective. We investigated relations between deployment and new-onset depression among US service members recently deployed to the wars in Iraq and Afghanistan. Methods. We included 40 219 Millennium Cohort Study participants who completed baseline and follow-up questionnaires and met inclusion criteria. Participants were identified with depression if they met the Primary Care Evaluation of Mental Disorders Patient Health Questionnaire criteria for depression at follow-up, but not at baseline. Results. Deployed men and women with combat exposures had the highest onset of depression, followed by those not deployed and those deployed without combat exposures. Combat-deployed men and women were at increased risk for new-onset depression compared with nondeployed men and women (men: adjusted odds ratio [AOR]=1.32; 95% confidence interval [CI]=1.13, 1.54; women: AOR=2.13; 95% CI=1.70, 2.65). Conversely, deployment without combat exposures led to decreased risk for new-onset depression compared with those who did not deploy (men: AOR=0.66; 95% CI=0.53, 0.83; women: AOR=0.65; 95% CI=0.47, 0.89). Conclusions. Deployment with combat exposures is a risk factor for new-onset depression among US service members. Post-deployment screening may be beneficial for US service members exposed to combat. KW - depression KW - human diseases KW - military personnel KW - war KW - Afghanistan KW - Iraq KW - USA KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - Central Asia KW - Asia KW - Least Developed Countries KW - Developing Countries KW - West Asia KW - Middle East KW - Threshold Countries KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - United States of America KW - Conflict (UU495) (New March 2000) KW - Non-communicable Human Diseases and Injuries (VV600) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20103048086&site=ehost-live&scope=site UR - http://www.ajph.org/ UR - email: timothy.wells@wpafb.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Ion chemistry of VX surrogates and ion energetics properties of VX: new suggestions for VX chemical ionization mass spectrometry detection. AU - Midey, A. J. AU - Miller, T. M. AU - Viggiano, A. A. AU - Bera, N. C. AU - Maeda, S. AU - Morokuma, K. JO - Analytical Chemistry (Washington) JF - Analytical Chemistry (Washington) Y1 - 2010/// VL - 82 IS - 9 SP - 3764 EP - 3771 CY - Washington; USA PB - American Chemical Society SN - 0003-2700 AD - Midey, A. J.: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Rd., Hanscom AFB, MA 01731-3010, USA. N1 - Accession Number: 20103162800. Publication Type: Journal Article. Language: English. Registry Number: 121-44-8. Subject Subsets: Public Health N2 - Room temperature rate constants and product ion branching ratios have been measured for the reactions of numerous positive and negative ions with VX chemical warfare agent surrogates representing the amine (triethylamine) and organophosphonate (diethyl methythiomethylphosphonate (DEMTMP)) portions of VX. The measurements have been supplemented by theoretical calculations of the proton affinity, fluoride affinity, and ionization potential of VX and the simulants. The results show that many proton transfer reactions are rapid and that the proton affinity of VX is near the top of the scale. Many proton transfer agents should detect VX selectively and sensitively in chemical ionization mass spectrometers. Charge transfer with NO+ should also be sensitive and selective since the ionization potential of VX is small. The surrogate studies confirm these trends. Limits of detection for commercial and research grade CIMS instruments are estimated at 80 pptv and 5 ppqv, respectively. KW - amines KW - chemical warfare KW - chemical weapons KW - organophosphorus compounds KW - proton radiation KW - temperature KW - triethylamine KW - war KW - organic phosphorus compounds KW - organophosphates KW - Conflict (UU495) (New March 2000) KW - Human Health and the Environment (VV500) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20103162800&site=ehost-live&scope=site UR - http://pubs.acs.org/doi/abs/10.1021/ac100176r UR - email: AFRL.RVB.PA@hanscom.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Racial differences in prostate cancer risk remain among US servicemen with equal access to care. AU - Wells, T. S. AU - Bukowinski, A. T. AU - Smith, T. C. AU - Smith, B. AU - Dennis, L. K. AU - Chu, L. K. AU - Gray, G. C. AU - Ryan, M. A. K. JO - Prostate JF - Prostate Y1 - 2010/// VL - 70 IS - 7 SP - 727 EP - 734 CY - New York; USA PB - Wiley-Liss, Inc. SN - 0270-4137 AD - Wells, T. S.: Air Force Research Laboratory/HEPA, Wright-Patterson Air Force Base, 2800 Q Street, Bldg 824 Room 206, Dayton, OH 45433, USA. N1 - Accession Number: 20103141797. Publication Type: Journal Article. Language: English. Number of References: 20 ref. Subject Subsets: Public Health N2 - BACKGROUND: Prostate cancer is the most common cancer among US men, however, the etiology remains unclear. Yet, one consistency is that black non-Hispanic men are at increased risk for prostate cancer compared to white, non-Hispanic men. The goal of this study was to assess relations between demographic and other potential prostate cancer risk factors in the context of the US military healthcare system, which provides equal access to all US servicemen. METHODS: Military healthcare and demographic data were used to describe risk factors for prostate cancer in the US military from September 1993 to September 2003. Cox's proportional hazards regression was employed to model the time to prostate cancer hospitalization. RESULTS: Four hundred eight first prostate cancer hospitalizations were identified among 2,761,559 servicemen. The adjusted rate per 100,000 persons rose from 1.41 to 3.62 for white non-Hispanic men and 1.43 to 6.08 for black non-Hispanic men by the end of the study. The increasing incidence over time for combined race/ethnic groups was similar to trends reported in the Surveillance, Epidemiology, and End Results Program for the US civilian population. No association was observed between occupation and prostate cancer hospitalization. However, black non-Hispanic men were at increased risk compared with white non-Hispanic men (hazard ratio=2.72, 95% confidence interval: 2.12, 3.49). CONCLUSIONS: No association was observed between occupation and prostate cancer hospitalization. In this relatively young cohort, black non-Hispanic race/ethnicity was found to be predictive of prostate cancer, and this association existed regardless of access to care and socioeconomic status. KW - African Americans KW - blacks KW - carcinoma KW - correlation KW - disease incidence KW - disease prevalence KW - disease surveys KW - epidemiology KW - ethnic groups KW - ethnicity KW - health care KW - health inequalities KW - health services KW - human diseases KW - men KW - military personnel KW - neoplasms KW - prostate KW - prostate cancer KW - risk KW - risk factors KW - socioeconomics KW - statistical analysis KW - USA KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - cancers KW - disease surveillance KW - ethnic differences KW - health disparities KW - prostate disorders KW - socioeconomic aspects KW - statistical methods KW - United States of America KW - Health Services (UU350) KW - Social Psychology and Social Anthropology (UU485) (New March 2000) KW - Non-communicable Human Diseases and Injuries (VV600) KW - Mathematics and Statistics (ZZ100) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20103141797&site=ehost-live&scope=site UR - http://www3.interscience.wiley.com/cgi-bin/fulltext/123221499/PDFSTART UR - email: timothy.wells@wpafb.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - The influence of 8 weeks of whey-protein and leucine supplementation on physical and cognitive performance. AU - Walker, T. B. AU - Smith, J. AU - Herrera, M. AU - Lebegue, B. AU - Pinchak, A. AU - Fischer, J. JO - International Journal of Sport Nutrition and Exercise Metabolism JF - International Journal of Sport Nutrition and Exercise Metabolism Y1 - 2010/// VL - 20 IS - 5 SP - 409 EP - 417 CY - Champaign; USA PB - Human Kinetics, Inc. SN - 1526-484x AD - Walker, T. B.: Air Force Research Laboratory, Brooks Air Force Base, San Antonio, Texas, USA. N1 - Accession Number: 20103356361. Publication Type: Journal Article. Language: English. Number of References: 26 ref. Registry Number: 61-90-5. Subject Subsets: Human Nutrition; Dairy Science N2 - The purpose of this study was to investigate the ability of whey-protein and leucine supplementation to enhance physical and cognitive performance and body composition. Thirty moderately fit participants completed a modified Air Force fitness test, a computer-based cognition test, and a dual-energy X-ray-absorptiometry scan for body composition before and after supplementing their daily diet for 8 wk with either 19.7 g of whey protein and 6.2 g leucine (WPL) or a calorie-equivalent placebo (P). Bench-press performance increased significantly from Week 1 to Week 8 in the WPL group, whereas the increase in the P group was not significant. Push-up performance increased significantly for WPL, and P showed a nonsignificant increase. Total mass, fat-free mass, and lean body mass all increased significantly in the WPL group but showed no change in the P group. No differences were observed within or between groups for crunches, chin-ups, 3-mile-run time, or cognition. The authors conclude that supplementing with whey protein and leucine may provide an advantage to people whose performance benefits from increased upper body strength and/or lean body mass. KW - body composition KW - body lean mass KW - food supplements KW - leucine KW - memory KW - whey protein KW - Texas KW - USA KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - Great Plains States of USA KW - USA KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - Gulf States of USA KW - Southern Plains States of USA KW - West South Central States of USA KW - Southern States of USA KW - Southwestern States of USA KW - lean body mass KW - United States of America KW - Milk and Dairy Produce (QQ010) KW - Physiology of Human Nutrition (VV120) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20103356361&site=ehost-live&scope=site UR - http://www.humankinetics.com DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Microbial fuel cells: converting waste to water and watts. AU - Birch, A. S. JO - Resource, Engineering & Technology for a Sustainable World JF - Resource, Engineering & Technology for a Sustainable World Y1 - 2010/// VL - 17 IS - 1 SP - 10 EP - 12 CY - St Joseph; USA PB - American Society of Agricultural and Biological Engineers SN - 1076-3333 AD - Birch, A. S.: United States Air Force Reserve, and Commander (Individual Mobilization Augmentee), 4th Civil Engineering Squadron, Seymour, Johnson Air Force Base, North Carolina, USA. N1 - Accession Number: 20103120772. Publication Type: Journal Article. Language: English. Subject Subsets: Soils & Fertilizers; Biofuels; Agricultural Engineering N2 - Microbial fuel cells (MFCs) are a budding technology where wastes, such as industrial and agricultural byproducts, sewage, food scraps, paper and plastics, are converted into clean water and power. MFCs are a biological fuel cells that use living microorganisms as catalysts for electrochemical reactions that convert wastes to power and water. The uses and benefits of MFCs in the agricultural and food industries, are presented. KW - agricultural byproducts KW - agricultural wastes KW - agriculture KW - applications KW - biofuels KW - electrochemistry KW - food industry KW - food wastes KW - industrial wastes KW - microorganisms KW - paper KW - plastics KW - sewage KW - waste utilization KW - farm wastes KW - micro-organisms KW - microbial fuel cells KW - Energy (PP100) KW - Water Resources (PP200) KW - Human Wastes and Refuse (XX300) KW - Industrial Wastes and Effluents (XX400) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20103120772&site=ehost-live&scope=site UR - http://www.asabe.org UR - email: MandyBirch@alum.mit.edu DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Spread of adenovirus to geographically dispersed military installations, May-October 2007. AU - Trei, J. S. AU - Johns, N. M. AU - Garner, J. L. AU - Noel, L. B. AU - Ortman, B. V. AU - Ensz, K. L. AU - Johns, M. C. AU - Bunning, M. L. AU - Gaydos, J. C. JO - Emerging Infectious Diseases JF - Emerging Infectious Diseases Y1 - 2010/// VL - 16 IS - 5 SP - 769 EP - 775 CY - Atlanta; USA PB - National Center for Infectious Diseases, Centers for Disease Control and Prevention SN - 1080-6040 AD - Trei, J. S.: United States Air Force School of Aerospace Medicine, San Antonio, Texas, USA. N1 - Accession Number: 20103137964. Publication Type: Journal Article. Language: English. Number of References: 19 ref. Subject Subsets: Tropical Diseases N2 - In mid-May 2007, a respiratory disease outbreak associated with adenovirus, serotype B14 (Ad14), was recognized at a large military basic training facility in Texas. The affected population was highly mobile; after the 6-week basic training course, trainees immediately dispersed to advanced training sites worldwide. Accordingly, enhanced surveillance and control efforts were instituted at sites receiving the most trainees. Specimens from patients with pneumonia or febrile respiratory illness were tested for respiratory pathogens by using cultures and reverse transcription-PCR. During May through October 2007, a total of 959 specimens were collected from 21 sites; 43.1% were adenovirus positive; the Ad14 serotype accounted for 95.3% of adenovirus isolates. Ad14 was identified at 8 sites in California, Florida, Mississippi, Texas, and South Korea. Ad14 spread readily to secondary sites after the initial outbreak. Military and civilian planners must consider how best to control the spread of infectious respiratory diseases in highly mobile populations traveling between diverse geographic locations. KW - disease surveys KW - epidemiology KW - geographical distribution KW - human diseases KW - military areas KW - outbreaks KW - respiratory diseases KW - viral diseases KW - California KW - Florida KW - Korea Republic KW - Mississippi KW - Texas KW - USA KW - Human adenovirus B KW - man KW - Mastadenovirus KW - Adenoviridae KW - dsDNA Viruses KW - DNA Viruses KW - viruses KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - Pacific States of USA KW - Western States of USA KW - USA KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - Gulf States of USA KW - Southern States of USA KW - South Atlantic States of USA KW - Southeastern States of USA KW - Developing Countries KW - East Asia KW - Asia KW - Threshold Countries KW - Delta States of USA KW - East South Central States of USA KW - Great Plains States of USA KW - Southern Plains States of USA KW - West South Central States of USA KW - Southwestern States of USA KW - disease surveillance KW - lung diseases KW - South Korea KW - United States of America KW - viral infections KW - Prion, Viral, Bacterial and Fungal Pathogens of Humans (VV210) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20103137964&site=ehost-live&scope=site UR - http://www.cdc.gov/eid/content/16/5/769.htm UR - email: natalie.johns@pentagon.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Safety of Anti-tumor necrosis factor (anti-TNF) therapy in patients with chronic hepatitis B. AU - Carroll, M. B. AU - Holmes, R. JO - Hepatitis B Annual JF - Hepatitis B Annual Y1 - 2009/// VL - 6 IS - 1 SP - 89 EP - 109 CY - Mumbai; India PB - Medknow Publications SN - 0972-9747 AD - Carroll, M. B.: United States Air Force, Keesler Medical Center, 301 Fisher Street, Keesler AFB, Biloxi, MS 39534, USA. N1 - Accession Number: 20113113901. Publication Type: Journal Article. Language: English. Number of References: 73 ref. Registry Number: 308079-78-9. Subject Subsets: Public Health N2 - The anti-tumor necrosis factor (TNF) agents are a class of medications which have given clinicians a new level of control over inflammatory illnesses that was previously unattainable with older disease modifying agents. Though each medication has unique molecular differences, they all have as their specific target the proinflammatory cytokine TNF-α. With the great improvements provided by the anti-TNF agents though has come a new spectrum of side effects. On the basis of the importance of TNF-α in granuloma formation, neutralization of TNF-α has led to reactivation of latent infections, the most notable being Mycobacterium tuberculosis. Another infectious agent that can elude eradication and enter a latent state, reactivating when the immune system is depressed, is the hepatitis B virus (HBV). Inhibition of TNF-α could also lead to immune suppression and reactivation of the virus much like that experienced with the reactivation of TB. The purpose of this article is to review the current medical literature for cases where anti-TNF agents were used to treat an inflammatory illness such as rheumatoid arthritis or Crohn's disease in patients chronically infected with HBV. Additionally, the role of TNF-α in HBV infection is explored, the differences in the anti-TNF agents are examined, and guidelines regarding the screening for and prophylaxis of HBV are discussed. KW - adverse effects KW - antiinflammatory agents KW - chronic infections KW - Crohn's disease KW - disease prevention KW - guidelines KW - hepatitis B KW - human diseases KW - inflammation KW - liver KW - liver diseases KW - reviews KW - rheumatoid arthritis KW - safety KW - screening KW - tumour necrosis factor KW - viral hepatitis KW - Hepatitis B virus KW - man KW - Hepadnaviridae KW - DNA Reverse Transcribing Viruses KW - viruses KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - adverse reactions KW - cachectin KW - cachexin KW - recommendations KW - screening tests KW - tumor necrosis factor KW - tumor necrosis factor-alpha KW - Prion, Viral, Bacterial and Fungal Pathogens of Humans (VV210) (New March 2000) KW - Non-communicable Human Diseases and Injuries (VV600) KW - Diagnosis of Human Disease (VV720) (New March 2000) KW - Pharmacology (VV730) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20113113901&site=ehost-live&scope=site UR - http://www.hepatitisbannual.org/article.asp?issn=0972-9747;year=2009;volume=6;issue=1;spage=89;epage=109;aulast=Carroll UR - email: matthew.carroll.1@us.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Household food security varies within month and is related to childhood anemia. AU - Weinstein, J. L. AU - Martin, K. S. AU - Ferris, A. M. JO - Journal of Hunger & Environmental Nutrition JF - Journal of Hunger & Environmental Nutrition Y1 - 2009/// VL - 4 IS - 1 SP - 48 EP - 61 CY - Philadelphia; USA PB - Taylor & Francis SN - 1932-0248 AD - Weinstein, J. L.: University of Connecticut and US Air Force Academy, Colorado Springs, Colorado, USA. N1 - Accession Number: 20093151099. Publication Type: Journal Article. Language: English. Number of References: 42 ref. Subject Subsets: Human Nutrition N2 - We measured food security (FS) and evaluated the impact of varying household FS on anemia in 24-month-old to 60-month-old children via hemoglobin measurement, chart review, home visits 3 times per month, and the Household Food Security Scale (HFSS). Over one third (38%) of families were food insecure in the prior year, and 37% of children recently anemic. Children in food insecure families were more likely to be anemic (odds ratio=6.14, [95% CI=2.09-18.05], p<.01). Children in families with worsening food insecurity (1-2 points) were more likely to be anemic (odds ratio=32.6, [95% CI=4.56-232.94], p<.01). This links variability in food insecurity to anemia and negative health outcomes. KW - anaemia KW - children KW - food security KW - haemoglobin KW - households KW - human diseases KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - anemia KW - hemoglobin KW - Nutrition Related Disorders and Therapeutic Nutrition (VV130) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20093151099&site=ehost-live&scope=site UR - http://www.taylorandfrancis.com UR - email: aferris@uchc.edu DP - EBSCOhost DB - lhh ER - TY - GEN T1 - Effects of low-level radio-frequency (3 kHz to 300 GHz) energy on human cardiovascular, reproductive, immune, and other systems: a review of the recent literature. AU - Jauchem, J. R. T2 - International Journal of Hygiene and Environmental Health JO - International Journal of Hygiene and Environmental Health JF - International Journal of Hygiene and Environmental Health Y1 - 2008/// VL - 211 IS - 1/2 SP - 1 EP - 29 CY - Jena; Germany PB - Elsevier GmbH SN - 1438-4639 AD - Jauchem, J. R.: Air Force Research Laboratory, Directed Energy Bioeffects Division, Radio Frequency Radiation Branch, 8262 Hawks Road, San Antonio, TX 78235-5147, USA. N1 - Accession Number: 20083113829. Publication Type: Journal Article. Language: English. Number of References: many ref. Subject Subsets: Public Health N2 - Objectives: Occupational or residential exposures to radio-frequency energy (RFE), including microwaves, have been alleged to result in health problems. A review of recent epidemiological studies and studies of humans as subjects in laboratory investigations would be useful. Methods: This paper is a narrative review of the recent medical and scientific literature (from mid-1998 through early 2006) dealing with possible effects of RFE on humans, relating to topics other than cancer, tumors, and central nervous system effects (areas covered in a previous review). Subject areas in this review include effects on cardiovascular, reproductive, and immune systems. Results: A large number of studies were related to exposures from cellular telephones. Although both positive and negative findings were reported in some studies, in a majority of instances no significant health effects were found. Most studies had some methodological limitations. Although some cardiovascular effects due to RFE were reported in epidemiological studies (e.g., lower 24-h heart rate, blunted circadian rhythm of heart rate), there were no major effects on a large number of cardiovascular parameters in laboratory studies of volunteers during exposure to cell-phone RFE. In population-based studies of a wide range of RFE frequencies, findings were equivocal for effects on birth defects, fertility, neuroblastoma in offspring, and reproductive hormones. Some changes in immunoglobulin levels and in peripheral blood lymphocytes were reported in different studies of radar and radio/television-transmission workers. Due to variations in results and difficulties in comparing presumably exposed subjects with controls, however, it is difficult to propose a unifying hypothesis of immune-system effects. Although subjective symptoms may be produced in some sensitive individuals exposed to RFE, there were no straightforward differences in such symptoms between exposed and control subjects in most epidemiological and laboratory studies. Consistent, strong associations were not found for RFE exposure and adverse health effects. The majority of changes relating to each of the diseases or conditions were small and not significant. Conclusions: On the basis of previous reviews of older literature and the current review of recent literature, there is only weak evidence for a relationship between RFE and any endpoint studied (related to the topics above), thus providing at present no sufficient foundation for establishing RFE as a health hazard. KW - cardiovascular system KW - electromagnetic field KW - electromagnetic radiation KW - epidemiology KW - exposure KW - human diseases KW - immune system KW - microwave radiation KW - occupational hazards KW - occupational health KW - radiation KW - reproductive organs KW - reviews KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - circulatory system KW - radiation exposure KW - Human Health and the Environment (VV500) KW - Non-communicable Human Diseases and Injuries (VV600) KW - Occupational Health and Safety (VV900) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20083113829&site=ehost-live&scope=site UR - http://www.sciencedirect.com/science/journal/14384639 UR - email: james.jauchem@brooks.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Current and future cooling technologies used in preventing heat illness and improving work capacity for battlefield soldiers - review of the literature. AU - O'Hara, R. AU - Eveland, E. AU - Fortuna, S. AU - Reilly, P. AU - Pohlman, R. JO - Military Medicine JF - Military Medicine Y1 - 2008/// VL - 173 IS - 7 SP - 653 EP - 657 CY - Bethesda; USA PB - Association of Military Surgeons of the US SN - 0026-4075 AD - O'Hara, R.: Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433-7947, USA. N1 - Accession Number: 20083269459. Publication Type: Journal Article. Language: English. Subject Subsets: Public Health N2 - Objective: The goals were to review the effectiveness of current cooling technologies used on the battlefield to reduce or to prevent heat illness in soldiers and to discuss possible alternative or improved cooling methods. Methods: A search of the literature for 1990-2007 was performed by using the Air Force Institute of Technology and Air Force Research Laboratory search engines. Results: Several current cooling technologies are modestly effective in attenuating brain and core body temperatures, but the cooling effects are not sustained and the devices present operational problems. This review indicates that some current cooling devices are effective in lowering perceived efforts and lengthening maximal exercise time but are incompatible with current demands. Conclusions: Many of the cooling methods and devices detailed in the literature are impractical for use in the field. Future research should focus on cooling technologies that are practical in the battlefield and have sustainable cooling effects. KW - cooling KW - disease prevention KW - heat injury KW - human diseases KW - reviews KW - soldiers KW - technology KW - war KW - work capacity KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - Conflict (UU495) (New March 2000) KW - Non-communicable Human Diseases and Injuries (VV600) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20083269459&site=ehost-live&scope=site UR - http://www.ingentaconnect.com/content/amsus/zmm/2008/00000173/00000007/art00023 DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Geographical distribution of genotypic and phenotypic markers among Bacillus anthracis isolates and related species by historical movement and horizontal transfer. AU - Kiel, J. L. AU - Parker, J. E. AU - Holwitt, E. A. AU - McCreary, R. P. AU - Andrews, C. J. AU - Santos, A. de los AU - Wade, M. AU - Kalns, J. AU - Walker, W. JO - Folia Microbiologica JF - Folia Microbiologica Y1 - 2008/// VL - 53 IS - 6 SP - 472 EP - 478 CY - Praha; Czech Republic PB - Institute of Microbiology, Academy of Sciences of the Czech Republic SN - 0015-5632 AD - Kiel, J. L.: Air Force Research Laboratory, Brooks City-Base, TX 78235-5107, USA. N1 - Accession Number: 20093008173. Publication Type: Journal Article. Language: English. Number of References: 24 ref. Subject Subsets: Veterinary Science; Veterinary Science N2 - The geographical distribution of Bacillus anthracis strains and isolates (n=53) bearing some of the same genetic markers as the Amerithrax Ames isolate was examined and evaluated. The results showed that at least one mechanism for the horizontal movement of genetic markers was shown amongst the isolates and closely related species, and the effect of such mixing was demonstrated on phenotype. The results provided potential mechanisms by which attempts to attribute isolates of B. anthracis to certain geographical and isolate sources may be disrupted. KW - genetic markers KW - genotypes KW - geographical distribution KW - phenotypes KW - strains KW - Bacillus anthracis KW - Bacillus (Bacteria) KW - Bacillaceae KW - Bacillales KW - Bacilli KW - Firmicutes KW - Bacteria KW - prokaryotes KW - bacterium KW - Prion, Viral, Bacterial and Fungal Pathogens of Animals (LL821) (New March 2000) KW - Prion, Viral, Bacterial and Fungal Pathogens of Humans (VV210) (New March 2000) KW - General Molecular Biology (ZZ360) (Discontinued March 2000) KW - Genetics and Molecular Biology of Microorganisms (ZZ395) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20093008173&site=ehost-live&scope=site UR - http://www.biomed.cas.cz/mbu/folia/ UR - email: Johnathan.Kiel@brooks.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Dynamic characteristics and human perception of vibration aboard a military propeller aircraft. AU - Smith, S. D. A2 - Rakheja, S. A2 - Dong, R. G. T3 - Special Issue: Workplace vibration exposure characterization, assessment and ergonomic interventions, Special Issue: Workplace vibration exposure. JO - International Journal of Industrial Ergonomics JF - International Journal of Industrial Ergonomics Y1 - 2008/// VL - 38 IS - 9/10 SP - 868 EP - 879 CY - Oxford; UK PB - Elsevier SN - 0169-8141 AD - Smith, S. D.: Air Force Research Laboratory, AFRL/RHPA, 2800 Q Street, Wright-Patterson AFB, OH 45433-7947, USA. N1 - Accession Number: 20083259051. Publication Type: Journal Article. Note: Special Issue: Workplace vibration exposure characterization, assessment and ergonomic interventions, Special Issue: Workplace vibration exposure. Language: English. Number of References: 15 ref. Subject Subsets: Public Health N2 - This study investigated the dynamic characteristics and human perception of higher-frequency multi-axis vibration associated with a military propeller aircraft environment. Triaxial accelerations were measured at the interfaces between the occupant and aircraft seat surface (seat pan and seat back) to evaluate and compare the effects of the aircraft seat fitted with different cushions. While all cushions showed a significant reduction in the X-axis seat pan vibration as compared to the original operational seat cushion at the blade passage frequency (BPF ~73.5 Hz), the associated accelerations remained significantly higher than the floor input accelerations. Transmissibility data confirmed these seat system characteristics at higher frequencies. A body region perception survey suggested that the subjects were most sensitive to the BPF component of the operational exposure. In contrast, the weighted acceleration levels (ISO 2631-1: 1997) suggested that the subjects would perceive the highest vibration in the vertical (Z) direction at the seat pan with substantial contributions in the X direction from the seat back, particularly at the propeller rotation frequency (PRF ~18.5 Hz). The overall Vibration Total Value (ISO 2631-1: 1997) suggested that the operational exposures would be perceived as being "not uncomfortable" to "a little uncomfortable." Relevance to industry - Effective multi-axis vibration mitigation strategies depend on the relationships between the location, direction, and level of vibration entering the occupant and human perception of the exposure. Current human exposure guidelines may not optimally reflect these relationships for assessing higher-frequency propeller aircraft work environments and should be applied with caution. KW - aircraft KW - ergonomics KW - exposure KW - military personnel KW - occupational health KW - perception KW - vibration KW - whole body vibration KW - USA KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - human engineering KW - United States of America KW - Human Physiology and Biochemistry (VV050) KW - Occupational Health and Safety (VV900) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20083259051&site=ehost-live&scope=site UR - http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V31-4RCNPN8-1&_user=6686535&_coverDate=10%2F31%2F2008&_rdoc=22&_fmt=high&_orig=browse&_srch=doc-info(%23toc%235717%232008%23999619990%23697369%23FLA%23display%23Volume)&_cdi=5717&_sort=d&_docanchor=&_ct=23&_acct=C000066028&_version=1&_urlVersion=0&_userid=6686535&md5=3581f32380ad41547c51cd31c3561e46 UR - email: suzanne.smith@wpafb.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Prior health care utilization as a potential determinant of enrollment in a 21-year prospective study, the Millennium Cohort Study. AU - Wells, T. S. AU - Jacobson, I. G. AU - Smith, T. C. AU - Spooner, C. N. AU - Smith, B. AU - Reed, R. J. AU - Amoroso, P. J. AU - Ryan, M. A. K. JO - European Journal of Epidemiology JF - European Journal of Epidemiology Y1 - 2008/// VL - 23 IS - 2 SP - 79 EP - 87 CY - Dordrecht; Netherlands PB - Springer Science + Business Media SN - 0393-2990 AD - Wells, T. S.: Biomechanics Branch, Air Force Research Laboratory, Wright-Patterson Air Force Base, 2800 Q Street, Building 824, Room 206, Dayton, Ohio, USA. N1 - Accession Number: 20083083587. Publication Type: Journal Article. Language: English. Number of References: 30 ref. Subject Subsets: Public Health N2 - Results obtained from self-reported health data may be biased if those being surveyed respond differently based on health status. This study was conducted to investigate if health, as measured by health care use preceding invitation, influenced response to invitation to a 21-year prospective study, the Millennium Cohort Study. Inpatient and outpatient diagnoses were identified among more than 68 000 people during a one-year period prior to invitation to enroll. Multivariable logistic regression defined how diagnoses were associated with response. Days spent hospitalized or in outpatient care were also compared between responders and nonresponders. Adjusted odds of response to the questionnaire were similar over a diverse range of inpatient and outpatient diagnostic categories during the year prior to enrollment. The number of days hospitalized or accessing outpatient care was very similar between responders and nonresponders. Study findings demonstrate that, although there are some small differences between responders and nonresponders, prior health care use did not affect response to the Millennium Cohort Study, and it is unlikely that future study findings will be biased by differential response due to health status prior to enrollment invitation. KW - epidemiology KW - health services KW - hospitals KW - mental disorders KW - mental health KW - military personnel KW - veterans KW - USA KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - mental illness KW - psychiatric disorders KW - United States of America KW - war veterans KW - Health Services (UU350) KW - Non-communicable Human Diseases and Injuries (VV600) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20083083587&site=ehost-live&scope=site UR - http://www.springerlink.com/link.asp?id=102883 UR - email: timothy.wells@wpafb.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Peer and role model influences for cigarette smoking in a young adult military population. AU - Green, K. J. AU - Hunter, C. M. AU - Bray, R. M. AU - Pemberton, M. AU - Williams, J. JO - Nicotine & Tobacco Research JF - Nicotine & Tobacco Research Y1 - 2008/// VL - 10 IS - 10 SP - 1533 EP - 1541 CY - Abingdon; UK PB - Informa Healthcare SN - 1462-2203 AD - Green, K. J.: United States Air Force, Bolling AFB, Dist. of Columbia, USA. N1 - Accession Number: 20083324645. Publication Type: Journal Article. Language: English. Number of References: 43 ref. Subject Subsets: Public Health N2 - Previous research has shown that 8% to 10% of nonsmokers initiated smoking during their first year of military service despite a period of forced abstinence during boot camp. To our knowledge, no studies have looked at the influence of peers and role models on the initiation of smoking among U.S. Air Force personnel who recently completed boot camp. This cross-sectional study examined the role of perceived peer norms, roommate influence, role model influence, perceived norms of all active duty personnel, and depressive symptoms in the initiation and reinitiation of smoking among 2962 Air Force technical training students. Previous nonsmokers were more likely to initiate smoking if they perceived that the majority of their classmates smoked (OR=1.67, 95% CI 1.05-2.67) and if they reported that their military training leader or classroom instructor used tobacco products (OR=1.69, 95% CI 1.12-2.56). Additionally, previous nonsmokers were more likely to initiate smoking if their roommate smoked (OR=1.67, 95% CI 1.09-2.56). Similar results were seen with previous smokers who perceived that the majority of their classmates smoked (OR=1.63, 95% CI 1.03-2.58) and if they reported that their military training leader or classroom instructor used tobacco products (OR=1.95, 95% CI 1.29-2.94). Our study suggests that military role models who use tobacco, peer smoking behaviour, and perceived smoking norms increase the likelihood of smoking initiation among newly enlisted military personnel who have recently undergone a period of forced abstinence. KW - cigarettes KW - military personnel KW - peer influence KW - risk factors KW - tobacco KW - tobacco smoking KW - young adults KW - USA KW - man KW - Nicotiana KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - Solanaceae KW - Solanales KW - dicotyledons KW - angiosperms KW - Spermatophyta KW - plants KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - United States of America KW - Social Psychology and Social Anthropology (UU485) (New March 2000) KW - Human Toxicology and Poisoning (VV810) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20083324645&site=ehost-live&scope=site UR - http://www.informaworld.com/smpp/content~content=a904706749~db=all~order=page DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Millennium Cohort: the 2001-2003 baseline prevalence of mental disorders in the U.S. military. AU - Riddle, J. R. AU - Smith, T. C. AU - Smith, B. AU - Corbeil, T. E. AU - Engel, C. C. AU - Wells, T. S. AU - Hoge, C. W. AU - Adkins, J. AU - Zamorski, M. AU - Blazer, D. JO - Journal of Clinical Epidemiology JF - Journal of Clinical Epidemiology Y1 - 2007/// VL - 60 IS - 2 SP - 192 EP - 201 CY - New York; USA PB - Elsevier SN - 0895-4356 AD - Riddle, J. R.: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, USA. N1 - Accession Number: 20073031867. Publication Type: Journal Article. Language: English. Number of References: 56 ref. Subject Subsets: Public Health N2 - Objectives: The 12-month prevalence of common mental illnesses in the United States is estimated to be 26%, accounting for an increasing fraction of all disability in the general population. The U.S. military is a unique group involved in response and defense during times of conflicts and disasters. The mental health of service members affects organizational productivity and effectiveness and is of great importance to the health of U.S. military members and public health in general. Study Design and Setting: In the present report, the authors describe the baseline prevalence of mental disorders in a large U.S. military cohort, the Millennium Cohort, established for a 22-year longitudinal study of the health effects of military service. Using crude and weighted prevalence and multivariable logistic regression, the mental health morbidity of the Millennium Cohort is reported for various demographics. Results: These analyses suggest that although the cohort compares favorably to other populations, there are military subpopulations, including women, younger, less educated, single, white, short-term service, enlisted, and Army members, who are at greater odds for some mental disorders. Conclusion: With ongoing U.S. involvement in combat operations around the world, these baseline data are essential to assessing long-term mental health morbidity in U.S. military service members. KW - armed forces KW - human diseases KW - mental disorders KW - mental health KW - military personnel KW - morbidity KW - occupational disorders KW - occupational health KW - veterans KW - USA KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - mental illness KW - psychiatric disorders KW - United States of America KW - war veterans KW - Non-communicable Human Diseases and Injuries (VV600) KW - Occupational Health and Safety (VV900) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20073031867&site=ehost-live&scope=site UR - http://www.sciencedirect.com/science/journal/08954356 UR - email: smith@nhrc.navy.mil DP - EBSCOhost DB - lhh ER - TY - GEN T1 - Failure of Rhodiola rosea to alter skeletal muscle phosphate kinetics in trained men. AU - Walker, T. B. AU - Altobelli, S. A. AU - Caprihan, A. AU - Robergs, R. A. T2 - Metabolism, Clinical and Experimental JO - Metabolism, Clinical and Experimental JF - Metabolism, Clinical and Experimental Y1 - 2007/// VL - 56 IS - 8 SP - 1111 EP - 1117 CY - Philadelphia; USA PB - Elsevier Inc. SN - 0026-0495 AD - Walker, T. B.: Biosciences and Protection Division, Air Force Research Laboratory, Brooks City-Base, TX 78235, USA. N1 - Accession Number: 20073178138. Publication Type: Journal Article. Language: English. Number of References: 24 ref. Registry Number: 14265-44-2. Subject Subsets: Horticultural Science; Aromatic & Medicinal Plants N2 - Rhodiola rosea is an herbal supplement purported to improve resistance to stressors and to enhance physical performance, potentially by improving adenosine triphosphate (ATP) turnover. Phosphocreatine (PCr) kinetics serves as a reflection of ATP turnover. The purpose of this investigation was to examine the effect of R. rosea ingestion on human skeletal muscle PCr recovery after exhaustive exercise. Twelve resistance-trained men, aged 19 to 39 years, completed incremental forearm wrist flexion exercise to volitional fatigue, once after ingesting 1500 mg R. rosea per day for 4 days, and once after ingesting an equivalent placebo dose. During exercise and recovery from exercise, muscle phosphates were examined using phosphorus 31 nuclear magnetic resonance spectroscopy. [PCr] during recovery was fit with a monoexponential function, and the resulting rate constants (k) were compared between groups. Rating of perceived exertion per stage and time to exhaustion were also compared, between groups. For R. rosea, k=0.3744±0.1532, whereas for placebo, k=0.3956±0.2238. Although rating of perceived exertion significantly increased within groups as workload increased, it did not differ between conditions, nor did time to exhaustion (R. rosea, 10.71±0.54 minutes; placebo, 10.48±0.68 minutes). Estimates of [PCr] at time 0, 5, 10, 15, and 20 minutes of recovery were nearly identical between groups. In summary, there were no significant differences between groups for any of the parameters measured. Based on these results, we conclude that R. rosea ingestion does not improve ATP turnover during or immediately after exercise. KW - herbal drugs KW - kinetics KW - medicinal plants KW - pharmacology KW - phosphate KW - plant extracts KW - skeletal muscle KW - man KW - Rhodiola rosea KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - Rhodiola KW - Crassulaceae KW - Rosales KW - dicotyledons KW - angiosperms KW - Spermatophyta KW - plants KW - drug plants KW - herbal medicines KW - medicinal herbs KW - officinal plants KW - Saxifragales KW - Horticultural Crops (FF003) (New March 2000) KW - Non-food/Non-feed Plant Products (SS200) KW - Pharmacology (VV730) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20073178138&site=ehost-live&scope=site UR - http://www.sciencedirect.com/science/journal/00260495 UR - email: thomas.walker@brooks.af.mil DP - EBSCOhost DB - lhh ER - TY - GEN T1 - Systemic reaction rates to field stings among imported fire ant-sensitive patients receiving >3 years of immunotherapy versus <3 years of immunotherapy. AU - Forester, J. P. AU - Johnson, T. L. AU - Arora, R. AU - Quinn, J. M. T2 - Allergy and Asthma Proceedings JO - Allergy and Asthma Proceedings JF - Allergy and Asthma Proceedings Y1 - 2007/// VL - 28 IS - 4 SP - 485 EP - 488 CY - Providence; USA PB - OceanSide Publications, Inc. SN - 1088-5412 AD - Forester, J. P.: Department of Pediatrics, United States Air Force Academy, Colorado, USA. N1 - Accession Number: 20073230355. Publication Type: Journal Article. Language: English. Subject Subsets: Public Health; Medical & Veterinary Entomology N2 - As imported fire ants (IFAs) expand their range, hypersensitivity reactions to their stings are becoming a significant cause of morbidity and mortality in the United States. Currently, IFAs whole body extract (WBE) immunotherapy is the mainstay of treatment for IFA hypersensitivity but the optimal duration of treatment is unknown. A questionnaire was administered to patients diagnosed with IFA venom hypersensitivity based on history and the presence of IFA venom-specific IgE who had been offered immunotherapy. The patients were grouped into those who received ≥3 years of immunotherapy and those who received <3 years of immunotherapy. Forty of the 272 patients initially identified were successfully contacted (14%) with 6 patients being excluded. Of these patients, 19 reported having received <3 years of IFA immunotherapy (reduced course) and 15 stated they had been given >3 years of immunotherapy (complete course). Subsequent field stings were reported by 18 (95%) of the reduced course groups and 14 (93%) of the complete course group with 1 person from each group (6 and 7%, respectively) experiencing a systemic reaction. There were no significant differences between the two groups in the number of patients with subsequent field stings or systemic reactions after subsequent IFA stings. Less than 3 years of IFA immunotherapy may offer long-term protection against IFA hypersensitivity reactions although additional studies with more subjects and controls are necessary before definitive conclusions may be made. KW - hypersensitivity KW - immunotherapy KW - stings KW - USA KW - Formicidae KW - man KW - Hymenoptera KW - insects KW - Hexapoda KW - arthropods KW - invertebrates KW - animals KW - eukaryotes KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - allergic responses KW - hypersensitiveness KW - United States of America KW - Human Immunology and Allergology (VV055) (New March 2000) KW - Non-drug Therapy and Prophylaxis of Humans (VV710) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20073230355&site=ehost-live&scope=site UR - http://www.ingentaconnect.com/content/ocean/aap/2007/00000028/00000004/art00016;jsessionid=7cjlogmd9fi88.victoria DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - CCL3L1 and CCR5 influence cell-mediated immunity and affect HIV-AIDS pathogenesis via viral entry-independent mechanisms. AU - Dolan, M. J. AU - Kulkarni, H. AU - Camargo, J. F. AU - He, W. J. AU - Smith, A. AU - Anaya, J. M. AU - Miura, T. AU - Hecht, F. M. AU - Mamtani, M. AU - Pereyra, F. AU - Marconi, V. AU - Mangano, A. AU - Sen, L. AU - Bologna, R. AU - Clark, R. A. AU - Anderson, S. A. AU - Delmar, J. AU - O'Connell, R. J. AU - Lloyd, A. AU - Martin, J. AU - Ahuja, S. S. AU - Agan, B. K. AU - Walker, B. D. AU - Deeks, S. G. AU - Ahuja, S. K. JO - Nature Immunology JF - Nature Immunology Y1 - 2007/// VL - 8 IS - 12 SP - 1324 EP - 1336 CY - London; UK PB - Nature Publishing Group SN - 1529-2908 AD - Dolan, M. J.: Infectious Disease Clinical Research Program, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, TX 78236, USA. N1 - Accession Number: 20083027565. Publication Type: Journal Article. Language: English. Subject Subsets: Public Health N2 - Although host defense against human immunodeficiency virus 1 (HIV-1) relies mainly on cell-mediated immunity (CMI), the determinants of CMI in humans are poorly understood. Here we demonstrate that variations in the genes encoding the chemokine CCL3L1 and HIV coreceptor CCR5 influence CMI in both healthy and HIV-infected individuals. CCL3L1-CCR5 genotypes associated with altered CMI in healthy subjects were similar to those that influence the risk of HIV transmission, viral burden and disease progression. However, CCL3L1-CCR5 genotypes also modify HIV clinical course independently of their effects on viral load and CMI. These results identify CCL3L1 and CCR5 as major determinants of CMI and demonstrate that these host factors influence HIV pathogenesis through their effects on both CMI and other viral entry-independent mechanisms. KW - acquired immune deficiency syndrome KW - cell mediated immunity KW - chemokines KW - genes KW - genetic variation KW - genotypes KW - HIV infections KW - human diseases KW - Human immunodeficiency viruses KW - pathogenesis KW - viral load KW - man KW - Lentivirus KW - Orthoretrovirinae KW - Retroviridae KW - RNA Reverse Transcribing Viruses KW - viruses KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - AIDS KW - CCR5 receptors KW - cellular immunity KW - genetic variability KW - genotypic variability KW - genotypic variation KW - human immunodeficiency virus infections KW - Human Immunology and Allergology (VV055) (New March 2000) KW - Human Genetics and Molecular Medicine (VV080) (New June 2002) KW - Prion, Viral, Bacterial and Fungal Pathogens of Humans (VV210) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20083027565&site=ehost-live&scope=site UR - http://www.nature.com/ni/journal/v8/n12/abs/ni1521.html UR - email: mdolan@hjf.org\ahujas@uthscsa.edu DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - The risk of altitude decompression sickness at 12,000 m and the effect of ascent rate. AU - Pilmanis, A. A. AU - Webb, J. T. AU - Kannan, N. AU - Balldin, U. I. JO - Aviation, Space, and Environmental Medicine JF - Aviation, Space, and Environmental Medicine Y1 - 2003/// VL - 74 IS - 10 SP - 1052 EP - 1057 CY - Alexandria; USA PB - Aerospace Medical Association SN - 0095-6562 AD - Pilmanis, A. A.: Air Force Research Laboratory, High Altitude Protection Research, 2485 Gillingham Drive, Brooks City-Base, TX 78235-5105, USA. N1 - Accession Number: 20043104636. Publication Type: Journal Article. Language: English. Subject Subsets: Public Health N2 - Introduction: Loss of aircraft cabin pressurization can result in very rapid decompression rates. The literature contains reports of increased or unchanged levels of altitude decompression sickness (DCS) resulting from increasing the rate of decompression. We conducted two prospective exposure profiles to quantify the DCS risk at 12 192 m (40 000 feet), and to determine if there was a greater DCS hazard associated with a much higher rate of decompression than typically used during past DCS studies. Methods: The 63 human subjects participated in 80 altitude chamber decompression exposures to a simulated altitude of 12 192 m (2.72 psia; 18.75 kPa) for 90 minutes, following preoxygenation with 100% oxygen for 90 minutes. Half of the subject-exposures involved an 8-minute decompression (1524 mpm; 5000 fpm) and the other half experienced a 30-second decompression (mean of 24 384 mpm; 80 000 fpm). Throughout each ascent and exposure, subjects were seated at rest and breathed 100% oxygen. At altitude, they were monitored for precordial venous gas emboli (VGE) and DCS symptoms. Results: The higher decompression rate yielded 55.0% DCS and 72.5% VGE, and the lower rate produced 47.5% DCS and 65.0% VGE. χ-square and log rank tests based on the Kaplan-Meier analyses indicated no difference in the incidence or onset rate of DCS or VGE observed during the two profiles. Conclusion: Decompression rate to altitude up to 24 384 mpm was found not to have an effect on DCS risk at altitude. However, research is needed to define the DCS risk with decompression rates greater than 24 384 mpm. It was also found that the onset time to DCS symptoms decreased as altitude increased. KW - embolism KW - high altitude KW - human diseases KW - risk assessment KW - veins KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - altitude decompression sickness KW - Non-communicable Human Diseases and Injuries (VV600) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20043104636&site=ehost-live&scope=site UR - email: andrew.pilmanis@brooks.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Diabetes mellitus and 2,3,7,8-tetrachlorodibenzo-p-dioxin elimination in veterans of Operation Ranch Hand. AU - Michalek, J. E. AU - Ketchum, N. S. AU - Tripathi, R. C. JO - Journal of Toxicology and Environmental Health. Part A JF - Journal of Toxicology and Environmental Health. Part A Y1 - 2003/// VL - 66 IS - 3 SP - 211 EP - 221 CY - London; UK PB - Taylor & Francis SN - 1528-7394 AD - Michalek, J. E.: Air Force Research Laboratory, 2655 Flight Nurse, Brooks Air Force Base, TX 78235-5137, USA. N1 - Accession Number: 20033026642. Publication Type: Journal Article. Language: English. Number of References: 11 ref. Subject Subsets: Weeds N2 - Using multivariate statistical models, no significant relationship was found between the rate of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) elimination and the occurrence or time to onset of diabetes in 343 veterans of Operation Ranch Hand, the unit responsible for the aerial spraying of Agent Orange and other TCDD-contaminated herbicides during the Vietnam War. Without adjustment for age, body mass index, family history of diabetes, and smoking history, the time to onset of diabetes decreased and the risk of diabetes increased with a diminished elimination rate. However, after adjustment, diabetes time to onset and occurrence were not significantly associated with TCDD elimination. Analyses of covariance found no significant difference between the average elimination rates of diabetic and nondiabetic veterans, without or with adjustment for risk factors. To our knowledge, this is the only study to date to examine TCDD elimination and diabetes. KW - diabetes mellitus KW - herbicides KW - poisoning KW - risk factors KW - veterans KW - TCDD KW - toxicosis KW - war veterans KW - weedicides KW - weedkillers KW - Pesticide and Drug Residues and Ecotoxicology (HH430) (New March 2000) KW - Non-communicable Human Diseases and Injuries (VV600) KW - Human Toxicology and Poisoning (VV810) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20033026642&site=ehost-live&scope=site UR - email: joel.michalek@brooks.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Biological terrorism against animals and humans: a brief review and primer for action. AU - Noah, D. L. AU - Noah, D. L. AU - Crowder, H. R. JO - Journal of the American Veterinary Medical Association JF - Journal of the American Veterinary Medical Association Y1 - 2002/// VL - 221 IS - 1 SP - 40 EP - 43 CY - Schaumburg; USA PB - American Veterinary Medical Association SN - 0003-1488 AD - Noah, D. L.: Office of the Air Force Surgeon General Headquarters, United States Air Force, 110 Luke Ave, Ste 400, Bolling Air Force Base, Washington, DC 20330, USA. N1 - Accession Number: 20023121887. Publication Type: Journal Article. Language: English. Number of References: 28 ref. Subject Subsets: Veterinary Science KW - aggressive behaviour KW - animal welfare KW - behaviour KW - biological warfare KW - directives KW - legislation KW - livestock KW - public health KW - terrorism KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - aggressive behavior KW - animal rights KW - behavior KW - Laws and Regulations (DD500) KW - Animal Welfare (LL810) KW - Health Services (UU350) KW - Conflict (UU495) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20023121887&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Pharmacokinetics of 2,3,7,8-tetrachlorodibenzo-p-dioxin in Seveso adults and veterans of operation Ranch Hand. AU - Michalek, J. E. AU - Pirkle, J. L. AU - Needham, L. L. AU - Patterson, D. G., Jr. AU - Caudill, S. P. AU - Tripathi, R. C. AU - Mocarelli, P. JO - Journal of Exposure Analysis and Environmental Epidemiology JF - Journal of Exposure Analysis and Environmental Epidemiology Y1 - 2002/// VL - 12 IS - 1 SP - 44 EP - 53 CY - New York; USA PB - Nature America, Inc. SN - 1053-4245 AD - Michalek, J. E.: Air Force Research Laboratory, Brooks Air Force Base, 2606 Doolittle Road, Building 807, San Antonio, TX 78235-5250, USA. N1 - Accession Number: 20023148554. Publication Type: Journal Article. Language: English. Subject Subsets: Weeds N2 - A combined analysis of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) elimination in Seveso adults and Ranch Hand veterans found a period of fast elimination within the first 0.27 years after exposure in Seveso, followed by a period of slower elimination between 3 and 16.35 years from exposure. The mean TCDD elimination rate within the first 0.27 years after exposure among six adult males in the Seveso cohort was 2.0646 year-1 (half-life=0.34 years). The mean rate from 3 to 16.35 years was 0.1011 year-1 (half-life=6.9 years). The mean Ranch Hand elimination rate, 00924 year-1 (half-life=6.9 years), measured between 9 and 33 years after exposure, was significantly less than the Seveso mean in the first 0.27 years after exposure, but not significantly different from the Seveso mean between 3 and 16.35 years after exposure. The fast elimination within the first 0.27 years followed by a slower rate after 3 years is consistent with the expected pattern in a two-compartment open model, with a distribution phase of rapid elimination followed by a slower elimination phase. KW - adults KW - dioxins KW - excretion KW - exposure KW - half life KW - pharmacokinetics KW - veterans KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - war veterans KW - Pesticide and Drug Residues and Ecotoxicology (HH430) (New March 2000) KW - Human Health and the Environment (VV500) KW - Human Toxicology and Poisoning (VV810) (New March 2000) KW - Occupational Health and Safety (VV900) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20023148554&site=ehost-live&scope=site UR - http://www.nature.com/cgi-taf/DynaPage.taf?file=/jea/journal/v12/n1/abs/7500201ab.html UR - email: joel.michalek@brooks.af.mil DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - HFE gene and hereditary hemochromatosis: a HuGE review. AU - Hanson, E. H. AU - Imperatore, G. AU - Burke, W. JO - American Journal of Epidemiology JF - American Journal of Epidemiology Y1 - 2001/// VL - 154 IS - 3 SP - 193 EP - 206 CY - Cary; USA PB - Oxford University Press SN - 0002-9262 AD - Hanson, E. H.: United States Air Force School of Aerospace Medicine, Brooks Air Force Base, San Antonio, Texas, USA. N1 - Accession Number: 20033066756. Publication Type: Journal Article. Language: English. Number of References: 103 ref. Subject Subsets: Public Health N2 - Hereditary haemochromatosis (HHC) is an autosomal recessive disorder of iron metabolism characterized by increased iron absorption and deposition in the liver, pancreas, heart, joints, and pituitary gland. Without treatment, death may occur from cirrhosis, primary liver cancer, diabetes, or cardiomyopathy. In 1996, HFE, the gene for HHC, was mapped on the short arm of chromosome 6 (6p21.3). Two of the 37 allelic variants of HFE described to date (C282Y and H63D) are significantly correlated with HHC. Homozygosity for the C282Y mutation was found in 52-100% of previous studies on clinically diagnosed probands. In this review, 5% of HHC probands were found to be compound heterozygotes (C282Y/H63D), and 1.5% were homozygous for the H63D mutation; 3.6% were C282Y heterozygotes, and 5.2% were H63D heterozygotes. In 7% of cases, C282Y and H63D mutations were not present. In the general population, the frequency of the C282Y/C282Y genotype is 0.4%. C282Y heterozygosity ranges from 9.2% in Europeans to nil in Asian, Indian subcontinent, African/Middle Eastern, and Australasian populations. The H63D carrier frequency is 22% in European populations. Accurate data on the penetrance of the different HFE genotypes are not available. Extrapolating from limited clinical observations in screening studies, an estimated 40-70% of persons with the C282Y homozygous genotype will develop clinical evidence of iron overload. A smaller proportion will die from complications of iron overload. To date, population screening for HHC is not recommended because of uncertainties about optimal screening strategies, optimal care for susceptible persons, laboratory standardization, and the potential for stigmatization or discrimination. KW - epidemiology KW - genes KW - genetic disorders KW - genotypes KW - haemochromatosis KW - heterozygosity KW - heterozygotes KW - human diseases KW - mutations KW - reviews KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - genetic defects KW - hemochromatosis KW - hereditary defects KW - iron storage disease KW - Human Genetics and Molecular Medicine (VV080) (New June 2002) KW - Non-communicable Human Diseases and Injuries (VV600) KW - General Molecular Biology (ZZ360) (Discontinued March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20033066756&site=ehost-live&scope=site UR - email: erichansonmdmph@yahoo.com DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Relation of serum 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) level to hematological examination results in veterans of Operation Ranch Hand. AU - Michalek, J. E. AU - Akhtar, F. Z. AU - Longnecker, M. P. AU - Burton, J. E. JO - Archives of Environmental Health JF - Archives of Environmental Health Y1 - 2001/// VL - 56 IS - 5 SP - 396 EP - 405 CY - Washington; USA PB - Heldref Publications SN - 0003-9896 AD - Michalek, J. E.: Air Force Research Laboratory, Brooks AFB, TX 78235-5250, USA. N1 - Accession Number: 20023015695. Publication Type: Journal Article. Language: English. Number of References: 44 ref. Subject Subsets: Tropical Diseases; Weeds N2 - The authors studied indices of haematological function and exposure to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) in Vietnam War veterans of Operation Ranch Hand - the Air Force unit responsible for the aerial spraying of Agent Orange and other herbicides in Vietnam. The herbicides were contaminated with TCDD. TCDD serum levels were measured in 1987 or later and extrapolated the result to the time of service in Vietnam. Serum TCDD level was studied in relation to red blood cell count, haemoglobin, haematocrit, mean corpuscular volume, white blood cell count, platelet count, and erythrocyte sedimentation rate at each of 4 physical examinations. Compared with veterans not involved in Operation Ranch Hand, those with the highest TCDD levels in Operation Ranch Hand had mean corpuscular volumes that were about 1% higher and platelet counts that were about 4% higher. These small increases were unlikely to be of clinical significance and may not have been caused by TCDD. KW - blood chemistry KW - dioxins KW - erythrocyte count KW - erythrocytes KW - exposure KW - haematocrit KW - haematology KW - haemoglobin KW - herbicide residues KW - herbicides KW - leukocyte count KW - leukocytes KW - platelets KW - veterans KW - Vietnam KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - APEC countries KW - ASEAN Countries KW - Developing Countries KW - Indochina KW - South East Asia KW - Asia KW - 2,3,7,8-tetrachlorodibenzo-P-dioxin KW - blood platelets KW - blood red cells KW - cell count KW - hematocrit KW - hematology KW - hemoglobin KW - leucocytes KW - red blood cells KW - thrombocytes KW - Viet Nam KW - war veterans KW - weedicides KW - weedkillers KW - white blood cells KW - Pesticide and Drug Residues and Ecotoxicology (HH430) (New March 2000) KW - Human Toxicology and Poisoning (VV810) (New March 2000) KW - Occupational Health and Safety (VV900) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20023015695&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Serum dioxin and hepatic abnormalities in veterans of Operation Ranch Hand. AU - Michalek, J. E. AU - Ketchum, N. S. AU - Longnecker, M. P. JO - Annals of Epidemiology JF - Annals of Epidemiology Y1 - 2001/// VL - 11 IS - 5 SP - 304 EP - 311 CY - New York; USA PB - Elsevier Science Inc. SN - 1047-2797 AD - Michalek, J. E.: Air Force Research Laboratory, AFRL/HEDB, 2606 Doolittle Road, Building 807, Brooks AFB, TX 78235-5250, USA. N1 - Accession Number: 20013087256. Publication Type: Journal Article. Language: English. Number of References: 39 ref. Subject Subsets: Weeds; Tropical Diseases N2 - We studied hepatic abnormalities and indices of hepatic function in relation to exposure to 2,3,7,8-tetrachlorodibenzo-p-dioxin (dioxin) in veterans of Operation Ranch Hand, the Air Force unit responsible for the aerial spraying of herbicides in Vietnam from 1962 to 1971. The prevalence of ever having liver disease through March 1993, and level of alanine aminotransferase, aspartate aminotransferase, γ-glutamyltransferase, lactic dehydrogenase (LDH), alkaline phosphatase, and total bilirubin were examined according to serum dioxin levels. We found an increased risk of "other liver disorders" among veterans with the highest dioxin levels (adjusted odds ratio (OR)=1.6; 95% confidence interval (CI), 1.2-2.1), due primarily to increased transaminases or LDH (adjusted OR=2.7; 95% CI, 1.4-5.1) and to other nonspecific liver abnormalities (adjusted OR=1.4; 95% CI, 1.0-2.0). KW - aminotransferases KW - dioxins KW - herbicide residues KW - human diseases KW - liver KW - liver diseases KW - oxidoreductases KW - Vietnam KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - APEC countries KW - ASEAN Countries KW - Developing Countries KW - Indochina KW - South East Asia KW - Asia KW - redox enzymes KW - transaminases KW - Viet Nam KW - Pesticide and Drug Residues and Ecotoxicology (HH430) (New March 2000) KW - Human Toxicology and Poisoning (VV810) (New March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20013087256&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Temporal changes in TCDD levels in 1419 Air Force Vietnam-era veterans not occupationally exposed to herbicides. AU - Jackson, W. G., Jr. AU - Michalek, J. E. JO - Journal of Exposure Analysis and Environmental Epidemiology JF - Journal of Exposure Analysis and Environmental Epidemiology Y1 - 2001/// VL - 11 IS - 1 SP - 50 EP - 55 CY - New York; USA PB - Nature America, Inc. SN - 1053-4245 AD - Jackson, W. G., Jr.: Air Force Research Laboratory, Brooks Air Force Base, TX 78235-5250, USA. N1 - Accession Number: 20013144214. Publication Type: Journal Article. Language: English. Number of References: 16 ref. Subject Subsets: Weeds; Tropical Diseases N2 - We summarize the temporal changes in the distribution of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) measurements made in serum drawn in 1987, 1992 and 1997 from 1419 Air Force Vietnam-era veterans who served as comparisons in a 20-year prospective study of health and exposure to herbicides and their TCDD contaminant in Air Force veterans of Operation Ranch Hand, the unit responsible for aerial spraying of Agent Orange and other herbicides in Vietnam. Among comparison veterans, TCDD levels decreased significantly with time at a rate of -0.25 parts per trillion per year. We also describe paired serum TCDD measurements in a subgroup of 33 veterans who had detectable levels in both 1987 and 1992. The paired measurements suggested that serum TCDD levels decreased with time, including those near the limit of detection. KW - contaminants KW - dioxins KW - exposure KW - pollutants KW - serum KW - veterans KW - Vietnam KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - APEC countries KW - ASEAN Countries KW - Developing Countries KW - Indochina KW - South East Asia KW - Asia KW - Viet Nam KW - war veterans KW - Human Toxicology and Poisoning (VV810) (New March 2000) KW - Pollution and Degradation (PP600) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20013144214&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Ten great veterinary public health/preventive medicine achievements in the United States, 1901 to 2000. AU - Noah, D. L. AU - Grayson, J. K. AU - Caudle, L. C., III JO - Journal of the American Veterinary Medical Association JF - Journal of the American Veterinary Medical Association Y1 - 2000/// VL - 217 IS - 12 SP - 1834 EP - 1836 CY - Schaumburg; USA PB - American Veterinary Medical Association SN - 0003-1488 AD - Noah, D. L.: Office of the Surgeon General, United States Air Force, 110 Luke Avenue, Bolling AFB, DC 20332-7050, Noah, USA. N1 - Accession Number: 20013008075. Publication Type: Journal Article. Language: English. Number of References: 19 ref. Subject Subsets: Veterinary Science KW - disease control KW - disease prevention KW - food hygiene KW - public health KW - veterinary medicine KW - USA KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - United States of America KW - Professions: Practice and Service (CC700) KW - Animal Science (General) (LL000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20013008075&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Infecting soft targets: biological weapons and fabian forms of indirect grand strategy. AU - Hickson, R. D. A2 - Frazier, T. W. A2 - Richardson, D. C. JO - Annals of the New York Academy of Sciences JF - Annals of the New York Academy of Sciences Y1 - 1999/// VL - 894 SP - 108 EP - 117 SN - 0077-8923 AD - Hickson, R. D.: Department of Philosophy and Fine Arts, US Air Force Academy, 2354 Fairchild Drive, Suite 6K12, US Air Force Academy, CO 80840-6238, USA. N1 - Accession Number: 20000506170. Publication Type: Journal Article. Language: English. Number of References: 43 ref. KW - biological warfare KW - food KW - pathogens KW - Prion, Viral, Bacterial and Fungal Pathogens of Humans (VV210) (New March 2000) KW - Food Contamination, Residues and Toxicology (QQ200) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=20000506170&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Postservice mortality of US air force veterans occupationally exposed to herbicides in Vietnam: 15-year follow-up. AU - Michalek, J. E. AU - Ketchum, N. S. AU - Akhtar, F. Z. JO - American Journal of Epidemiology JF - American Journal of Epidemiology Y1 - 1998/// VL - 148 IS - 8 SP - 786 EP - 792 SN - 0002-9262 AD - Michalek, J. E.: Air Force Research Laboratory, Brooks Air Force Base, TX, USA. N1 - Accession Number: 19992000821. Publication Type: Journal Article. Language: English. Number of References: 25 ref. Subject Subsets: Public Health N2 - The US Air Force continues to assess the mortality of veterans of Operation Ranch Hand, the unit responsible for aerially spraying herbicides in Vietnam. The authors of this study found that the cumulative all-cause mortality experience of these veterans was not different from that expected (standardized mortality ratio (SMR) = 1.0). Overall, cause-specific mortality did not differ from that expected regarding deaths from accidents, cancer, or circulatory system diseases, but the authors found that there was an increased number of deaths due to digestive diseases (SMR = 1.7, 95% confidence interval (CI) 0.9-3.2). When analysing by military occupation, they found an increase in the number of deaths caused by circulatory system diseases (SMR = 1.5, 95% CI 1.0-2.2) among enlisted ground personnel, the subgroup with the highest dioxin levels. Most of the increase in the number of deaths from digestive diseases was caused by chronic liver disease and cirrhosis, and more than half of the increase in the number of deaths from circulatory system diseases was a result of atherosclerotic heart disease. In the subgroup of Ranch Hand veterans who had survived more than 20 years since their military service in Southeast Asia, the authors found no significant increase in the risk of death due to cancer at all sites (SMR = 1.1) and a nonsignificant increase in the number of deaths due to cancers of the bronchus and lung (SMR = 1.3). KW - cardiovascular diseases KW - cirrhosis KW - dioxins KW - exposure KW - follow up KW - heart KW - heart diseases KW - herbicides KW - human diseases KW - liver KW - liver diseases KW - lungs KW - mortality KW - neoplasms KW - occupations KW - spraying KW - veterans KW - USA KW - Vietnam KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - ASEAN Countries KW - Developing Countries KW - Indochina KW - South East Asia KW - Asia KW - cancers KW - coronary diseases KW - death rate KW - liver cirrhosis KW - United States of America KW - Viet Nam KW - war veterans KW - weedicides KW - weedkillers KW - Non-communicable Human Diseases and Injuries (VV600) KW - Human Toxicology, Poisoning and Pharmacology (VV800) (Discontinued March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=19992000821&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Radiation exposure, socioeconomic status, and brain tumor risk in the US Air Force: a nested case-control study. AU - Grayson, J. K. JO - American Journal of Epidemiology JF - American Journal of Epidemiology Y1 - 1996/// VL - 143 IS - 5 SP - 480 EP - 486 SN - 0002-9262 AD - Grayson, J. K.: United States Air Force, Armstrong Laboratory, Brooks Air Force Base, Texas, USA. N1 - Accession Number: 19962004909. Publication Type: Journal Article. Language: English. Number of References: 34 ref. Subject Subsets: Public Health N2 - A nested case-control study was used to investigate the relation between a range of electromagnetic field exposures and brain tumour risk in the US Air Force. Cumulative extremely low frequency and radiofrequency/microwave electromagnetic field potential exposures were estimated from a job-exposure matrix developed for this study. Ionizing radiation exposures were obtained from personal dosimetry records. Men who were exposed to nonionizing electromagnetic fields had a small excess risk for developing brain tumours, with the extremely low frequency and radiofrequency/microwave age-race-senior military rank-adjusted odds ratios being 1.28 (95% confidence interval (CI) 0.95-1.74) and 1.39 (95% CI 1.01-1.90), respectively. By contrast, men who were exposed to ionizing radiation had an age-race-senior military rank-adjusted odds ratio of 0.58 (95% CI 0.22-1.52). These results support a small association between extremely low frequency and radiofrequency/microwave electromagnetic field exposure and no association between ionizing radiation exposure and brain tumours in the US Air Force population. Military rank was consistently associated with brain tumour risk. Officers were more likely than enlisted men to develop brain tumours (age-race-adjusted odds ratio (OR) = 2.11, 95% CI 1.48-3.01), and senior officers were at increased risk compared with all other US Air Force members (age-race-adjusted OR = 3.30, 95% CI 1.99-5.45). KW - brain KW - brain diseases KW - electromagnetic radiation KW - human diseases KW - military personnel KW - neoplasms KW - occupational hazards KW - occupations KW - socioeconomic status KW - North America KW - USA KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - America KW - APEC countries KW - Developed Countries KW - North America KW - OECD Countries KW - brain disorders KW - cancer sites KW - cancers KW - cerebrum KW - United States of America KW - Occupational Health and Safety (VV900) KW - Non-communicable Human Diseases and Injuries (VV600) KW - Human Health and the Environment (VV500) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=19962004909&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Volume of blood required to detect common neonatal pathogens. AU - Schelonka, R. L. AU - Chai, M. K. AU - Yoder, B. A. AU - Hensley, D. AU - Brockett, R. M. AU - Ascher, D. P. JO - Journal of Pediatrics JF - Journal of Pediatrics Y1 - 1996/// VL - 129 IS - 2 SP - 275 EP - 278 SN - 0022-3476 AD - Schelonka, R. L.: Division of Neonatology, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, TX 78236-5300, USA. N1 - Accession Number: 19961202374. Publication Type: Journal Article. Language: English. Number of References: 28 ref. Subject Subsets: Medical & Veterinary Mycology N2 - The min. blood volume and absolute number of microorganisms necessary for detection of bacteraemia and fungaemia in neonates by an automated colorimetric blood culture system (BacT/Alert) were determined. Escherichia coli, Streptococcus agalactiae, Staphylococcus epidermidis and Candida albicans were tested as common neonatal pathogens. It is concluded that if there are 1 or 2 viable colony forming units (CFU) in a given volume of blood inoculated into culture media, the colorimetric detection system will identify growth rapidly. The time to detection is generally more rapid with higher-density bacteraemia or fungaemia, but these differences are not clinically important. Since there may be a sizeable number of infants at risk of sepsis with a colony count <4 CFU/ml, small volumes of blood (0.5 ml) are inadequate for acceptable detection of blood-borne infection. It is suggested that 1 or 2 ml of blood should increase microorganism recovery in the case of low-colony-count sepsis. KW - bacteraemia KW - blood KW - candidosis KW - colorimetry KW - detection KW - diagnosis KW - fungaemia KW - human diseases KW - infections KW - neonates KW - techniques KW - Candida albicans KW - Escherichia coli KW - man KW - Staphylococcus epidermidis KW - Streptococcus agalactiae KW - Candida KW - Saccharomycetales KW - Saccharomycetes KW - Saccharomycotina KW - Ascomycota KW - fungi KW - eukaryotes KW - Escherichia KW - Enterobacteriaceae KW - Enterobacteriales KW - Gammaproteobacteria KW - Proteobacteria KW - Bacteria KW - prokaryotes KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - Staphylococcus KW - Staphylococcaceae KW - Bacillales KW - Bacilli KW - Firmicutes KW - Streptococcus KW - Streptococcaceae KW - Lactobacillales KW - bacteremia KW - bacterium KW - candidiasis KW - E. coli KW - fungemia KW - fungus KW - Hyphomycetes KW - newborn infants KW - Parasites, Vectors, Pathogens and Biogenic Diseases of Humans (VV200) (Discontinued March 2000) KW - Human Treatment and Diagnosis (Non-drug) (VV700) (Discontinued March 2000) KW - Techniques and Methodology (ZZ900) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=19961202374&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Nasal candidiasis in a patient on long-term topical intranasal corticosteroid therapy. AU - Webb, E. L. JO - Journal of Allergy and Clinical Immunology JF - Journal of Allergy and Clinical Immunology Y1 - 1993/// VL - 91 IS - 2 SP - 680 EP - 681 SN - 0091-6749 AD - Webb, E. L.: Department of Allergy and Immunology, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, TX 78236-5300, USA. N1 - Accession Number: 19931214286. Publication Type: Journal Article. Language: English. Number of References: 5 ref. Subject Subsets: Medical & Veterinary Mycology N2 - A case of nasal candidosis is reported in a 62-yr-old woman who presented with a 2-wk history of increasing nasal irritation and congestion, hoarseness and mild fatigue. The patient's medications included intranasal beclomethasone dipropionate (BDP) for 1.5 yr for rhinitis. Physical examination revealed mild tenderness to maxillary sinus percussion bilaterally and fibreoptic rhinolaryngoscopy revealed diffuse, patchy, white exudates with surrounding erythema intranasally, located predominantly on middle turbinates bilaterally. Potassium hydroxide preparation of 1 of the exudative lesions revealed pseudomycelia and clusters of yeast cells consistent with Candida albicans. BDP was discontinued, but at follow-up, 1 month later, persistent nasal candidosis was noted and oral ketoconazole (400 mg twice daily) was given for 8 wk. Haematology/oncology evaluation of the patient revealed chronic lymphocytic leukaemia (CLL). The patient also developed a symptomatic candidal infection of the right external auditory canal, which responded to topical antifungal therapy. It is concluded that this patient's nasal candidosis, initially thought to be a complication of long-term BDP therapy, was the initial clinical manifestation of a CLL-induced partial cellular immunodeficiency. KW - corticoids KW - hosts KW - infections KW - leukaemia KW - nose KW - predisposition KW - USA KW - Candida albicans KW - man KW - Candida KW - Saccharomycetales KW - Saccharomycetes KW - Saccharomycotina KW - Ascomycota KW - fungi KW - eukaryotes KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - blood cancer KW - corticosteroids KW - fungus KW - Hyphomycetes KW - leucaemia KW - leukemia KW - United States of America KW - Parasites, Vectors, Pathogens and Biogenic Diseases of Humans (VV200) (Discontinued March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=19931214286&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Coccidioides immitis presenting as a mycelial pathogen with empyema and hydropneumothorax. AU - Dolan, M. J. AU - Lattuada, C. P. AU - Melcher, G. P. AU - Zellmer, R. AU - Allendoerfer, R. AU - Rinaldi, M. G. JO - Journal of Medical and Veterinary Mycology JF - Journal of Medical and Veterinary Mycology Y1 - 1992/// VL - 30 IS - 3 SP - 249 EP - 255 SN - 0268-1218 AD - Dolan, M. J.: Department of Infectious Diseases, Wilford Hall United States Air Force Medical Center, Lackland AFB, TX 78236, USA. N1 - Accession Number: 19921212404. Publication Type: Journal Article. Language: English. Number of References: 20 ref. Subject Subsets: Medical & Veterinary Mycology N2 - A case is reported in a previously healthy 52-yr-old Caucasian man who developed hydropneumothorax and pleural peel filled with pleomorphic, septate hyphae. The only organism grown from cultures of the lung and pleural fluid was C. immitis, confirmed by exoantigen testing. Spherule-endospore forms were produced, however, following injection of the arthroconidial tissue isolate into BALB/c mice. The patient had a positive immunodiffusion complement-fixation test and developed a positive coccidioidin skin test during therapy. He recovered following thoracotomy and wedge resection of the ruptured coccidioidal cavity, and therapy with amphotericin B (total dose 1800 mg) followed by fluconazole (200 mg/d for 9 months). It is suggested that the sole presence of the mycelial form of the dimorphic fungus C. immitis in the pleural space may have been due to a low CO2 partial pressure at that site secondary to a bronchopleural fistula. It is concluded that the case shows a distinctive and uncommon presentation of coccidioidomycosis which demonstrates the specificity of both the immunodiffusion complement-fixation assay in diagnosing this disease and the exoantigen test in confirming culture results. KW - hosts KW - infections KW - lungs KW - Texas KW - USA KW - Coccidioides immitis KW - man KW - Coccidioides KW - Onygenaceae KW - Onygenales KW - Eurotiomycetes KW - Pezizomycotina KW - Ascomycota KW - fungi KW - eukaryotes KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - Great Plains States of USA KW - USA KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - Gulf States of USA KW - Southern Plains States of USA KW - West South Central States of USA KW - Southern States of USA KW - Southwestern States of USA KW - fungus KW - United States of America KW - Parasites, Vectors, Pathogens and Biogenic Diseases of Humans (VV200) (Discontinued March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=19921212404&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Evaluation of devices for removing attached Rhipicephalus sanguineus (Acari: Ixodidae). AU - Bowles, D. E. AU - McHugh, C. P. AU - Spradling, S. L. JO - Journal of Medical Entomology JF - Journal of Medical Entomology Y1 - 1992/// VL - 29 IS - 5 SP - 901 EP - 902 SN - 0022-2585 AD - Bowles, D. E.: United States Air Force Armstrong Laboratory, Occupational Medicine Division, Environmental Biology Branch, Brooks AFB, TX 78235, USA. N1 - Accession Number: 19920512399. Publication Type: Journal Article. Language: English. Number of References: 4 ref. Subject Subsets: Veterinary Science; Medical & Veterinary Entomology; Veterinary Science N2 - Three types of forceps and a commercially available device, the Tick Solution (Instruments of Sweden, Inc., Stamford, Connecticut, USA) (a spring-loaded device having a pair of pincers that fits over the body of the tick), were used to remove adults of R. sanguineus from dogs. The Tick Solution proved least effective at removing ticks, requiring significantly more removal attempts compared with forcep-removal methods. Medium-tipped angled forceps provided the best overall performance. Other advantages and disadvantages of the device are discussed. [See also J. Goddard (1988) U.S. Air Force Medical Service Digest, 39: 16-17 and G.R. Needham (1985) Pediatrics, 75: 997-1002]. KW - Bites KW - Ectoparasitoses KW - Equipment KW - removal KW - Tick bites KW - tick infestations KW - Texas KW - USA KW - Acari KW - Arachnida KW - dogs KW - Ixodidae KW - Rhipicephalus KW - Rhipicephalus sanguineus KW - Arachnida KW - arthropods KW - invertebrates KW - animals KW - eukaryotes KW - Canis KW - Canidae KW - Fissipeda KW - carnivores KW - mammals KW - vertebrates KW - Chordata KW - Metastigmata KW - Acari KW - Ixodidae KW - Rhipicephalus KW - Great Plains States of USA KW - USA KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - Gulf States of USA KW - Southern Plains States of USA KW - West South Central States of USA KW - Southern States of USA KW - Southwestern States of USA KW - devices KW - Forceps KW - United States of America KW - Human Injuries (VV610) (Discontinued March 2000) KW - Parasites, Vectors, Pathogens and Biogenic Diseases of Animals (LL820) (Discontinued March 2000) KW - Pets and Companion Animals (LL070) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=19920512399&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Allergic Bipolaris sinusitis: clinical and immunopathologic characteristics. AU - Gourley, D. S. AU - Whisman, B. A. AU - Jorgensen, N. L. AU - Martin, M. E. AU - Reid, M. J. JO - Journal of Allergy and Clinical Immunology JF - Journal of Allergy and Clinical Immunology Y1 - 1990/// VL - 85 IS - 3 SP - 583 EP - 591 SN - 0091-6749 AD - Gourley, D. S.: Allergy and Immunology Service, Department of Medicine, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, San Antonio, Texas. N1 - Accession Number: 19901206733. Publication Type: Journal Article. Language: English. Number of References: 30 ref. Subject Subsets: Medical & Veterinary Mycology N2 - Three cases of allergic fungal sinusitis caused by B. spicifera [Cochliobolus spicifer] are reported in 16- and 40-yr-old women and a 20-yr-old man. The patients were young, atopic and immunocompetent. All 3 patients demonstrated pansinusitis with nasal polyps and underwent multiple surgical procedures. Pathological features included a characteristic mucoid exudate containing eosinophils, Charcot-Leyden crystals and fungal hyphae. In 2 cases there was bony erosion revealed by CT but no histological evidence of direct fungal invasion into the mucosa or bony trabeculae. Immunological features, including total eosinophil count, total serum IgE, immediate and late-phase skin response to C. spicifer, serum precipitins, and specific IgE and IgG to C. spicifer, are described. It is suggested that this diagnosis should be considered in atopic patients with nasal polyps and pansinusitis unresponsive to conventional medical therapy. KW - allergies KW - hosts KW - infections KW - sinuses KW - USA KW - Cochliobolus spicifer KW - man KW - Pleosporaceae KW - Cochliobolus KW - Pleosporaceae KW - Pleosporales KW - Dothideomycetes KW - Pezizomycotina KW - Ascomycota KW - fungi KW - eukaryotes KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - fungus KW - United States of America KW - Parasites, Vectors, Pathogens and Biogenic Diseases of Humans (VV200) (Discontinued March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=19901206733&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Transvaginal-peritoneal migration of Trichomonas vaginalis as a cause of ascites: a report of two cases. AU - Hammond, T. L. AU - Hankins, G. D. V. AU - Snyder, R. R. JO - Journal of Reproductive Medicine JF - Journal of Reproductive Medicine Y1 - 1990/// VL - 35 IS - 2 SP - 179 EP - 181 SN - 0024-7758 AD - Hammond, T. L.: Department of Obstetrics and Gynecology, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, TX 78236-5300, USA. N1 - Accession Number: 19910868495. Publication Type: Journal Article. Language: English. Number of References: 12 ref. Registry Number: 24390-14-5, 10592-13-9, 564-25-0, 443-48-1. Subject Subsets: Protozoology N2 - Genital tract colonization with T. vaginalis usually results in vaginitis without systemic manifestations. This report, however, describes 2 women in whom motile organisms were recovered from abdominopelvic ascites. The first, a 22-year-old, was suffering from lower abdominal pain and vaginal bleeding. Pelvic examination revealed blood in the vagina and cervical os, a bulging cul-de-sac and diffuse pelvic tenderness exacerbated by cervical motion. Motile trichomonads were observed in the vaginal secretions and in the fluid recovered by culdocentesis. Within 5 days of metronidazole and doxycycline treatment the patient was much improved clinically. The 2nd woman, a 21-year-old, presented 20 days after cholecystectomy for evaluation for anorexia, recalcitrant right lower quadrant pain that radiated to the right shoulder, leukorrhea and constipation. Microscopic examination of the vaginal discharge was unremarkable, and symptomatology was initially attributed to the recent cholecystectomy. Within 36 h the patient's temperature rose to 38°C, and on pelvic examination she had diffuse, bilateral adnexal pain. The posterior vaginal fornix was bulging and culdocentesis demonstrated motile trichomonads and Pseudomonas aeruginosa on culture. Metronidazole was administered, with a prompt clinical response. Culture of a second culdocentesis, at follow-up 4 weeks later, grew Streptococcus acidaminius. It is hypothesized that in the 2 cases presented above, trichomonads functioned as vectors to transport other microorganisms to the upper genital tract. KW - Antiprotozoal agents KW - ascites KW - case reports KW - doxycycline KW - drug therapy KW - Females KW - Human diseases KW - metronidazole KW - parasites KW - North America KW - Texas KW - USA KW - man KW - protozoa KW - Sarcomastigophora KW - Trichomonas vaginalis KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - invertebrates KW - Protozoa KW - Trichomonas KW - Trichomonadidae KW - Trichomonadida KW - Sarcomastigophora KW - America KW - Great Plains States of USA KW - USA KW - APEC countries KW - Developed Countries KW - North America KW - OECD Countries KW - Gulf States of USA KW - Southern Plains States of USA KW - West South Central States of USA KW - Southern States of USA KW - Southwestern States of USA KW - chemotherapy KW - Deoxycycline KW - United States of America KW - Parasites, Vectors, Pathogens and Biogenic Diseases of Humans (VV200) (Discontinued March 2000) KW - Pesticides and Drugs (General) (HH400) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=19910868495&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Effectiveness of personal protection against mosquitoes in Alaska. AU - Lillie, T. H. AU - Schreck, C. E. AU - Rahe, A. J. JO - Journal of Medical Entomology JF - Journal of Medical Entomology Y1 - 1988/// VL - 25 IS - 6 SP - 475 EP - 478 SN - 0022-2585 AD - Lillie, T. H.: United States Air Force School of Aerospace Medicine, Epidemiology Division, Brooks AFB, TX 78235, USA. N1 - Accession Number: 19900597748. Publication Type: Journal Article. Language: English. Number of References: 15 ref. Registry Number: 134-62-3, 52645-53-1. Subject Subsets: Medical & Veterinary Entomology N2 - A personal protection system consisting of an extended-duration repellent formulation containing 35% deet (diethyltoluamide) and a permethrin-treated battle dress uniform (0.125 mg permethrin a.i./cm²) was tested against Culiseta impatiens at Galena, Alaska. Participants wearing the system received 1 mosquito bite per hour (99.9% protection), whereas those with an untreated uniform and no repellent received 1188 mosquito bites/h. Deet alone provided >99% protection (4 mosquito bites/h) for more than 8 h, whereas the permethrin-treated uniform alone provided 93% protection (78 mosquito bites/h). KW - Biting rates KW - Clothing KW - Diethyltoluamide KW - efficacy KW - impregnated fabrics KW - insect repellents KW - Military entomology KW - Permethrin KW - Protective clothing KW - repellents KW - Alaska KW - North America KW - USA KW - Culicidae KW - Culiseta impatiens KW - Diptera KW - man KW - Diptera KW - insects KW - Hexapoda KW - arthropods KW - invertebrates KW - animals KW - eukaryotes KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - Culiseta KW - Culicidae KW - Pacific States of USA KW - Western States of USA KW - USA KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - apparel KW - clothes KW - DEET KW - mosquitoes KW - uniforms KW - United States of America KW - Repellents and Attractants (HH500) KW - Pesticides and Drugs (General) (HH400) KW - Aquatic Biology and Ecology (MM300) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=19900597748&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Mycoses caused by Candida lusitaniae. AU - Hadfield, T. L. AU - Smith, M. B. AU - Winn, R. E. AU - Rinaldi, M. G. AU - Guerra, C. JO - Reviews of Infectious Diseases JF - Reviews of Infectious Diseases Y1 - 1987/// VL - 9 IS - 5 SP - 1006 EP - 1012 AD - Hadfield, T. L.: Dep. Path., Wilford Hall United States Air Force Med. Cent., Lackland Air Force Base, TX 78236-5300, USA. N1 - Accession Number: 19881385733. Publication Type: Journal Article. Language: English. Number of References: 13 ref. Subject Subsets: Medical & Veterinary Mycology N2 - A case in a 66-yr-old man with acute myelogenous leukaemia and renal failure is reported. Yeasts were isolated from urine and blood cultures and presumptively identified as Saccharomyces cerevisiae. No antifungal therapy was instituted. The death of the patient was thought to be due to cardiac dysfunction. At autopsy, histopathological examination of kidney tissue revealed the presence of budding yeasts. Examination of tissue sections from other organs failed to reveal similar foci of yeast infection. Mycological examination of the yeast isolated from urine and blood cultures resulted in its identification as C. lusitaniae. It is suggested tha C. lusitaniae may be misidentified as one of several other fungal species, including C. tropicalis and C. parapsilosis, as well as S. cerevisiae. A review of the literature is also presented. KW - generalized infections KW - hosts KW - infection KW - leukaemia KW - predisposition KW - USA KW - Candida lusitaniae KW - man KW - Candida KW - Saccharomycetales KW - Saccharomycetes KW - Saccharomycotina KW - Ascomycota KW - fungi KW - eukaryotes KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - blood cancer KW - fungus KW - Hyphomycetes KW - leucaemia KW - leukemia KW - United States of America KW - Parasites, Vectors, Pathogens and Biogenic Diseases of Humans (VV200) (Discontinued March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=19881385733&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Evaluation of 1% bifonazole solution in patients with tinea corporis/cruris or tinea (pityriasis) versicolor infections. AU - VanDersarl, J. V. JO - Advances in Therapy JF - Advances in Therapy Y1 - 1986/// VL - 3 IS - 5 SP - 281 EP - 288 SN - 0741-238X AD - VanDersarl, J. V.: Derm. Clinic, United States Air Force Acad. Hosp., Colorado Springs, CO, USA. N1 - Accession Number: 19881200336. Publication Type: Journal Article. Language: English. Number of References: 7 ref. Subject Subsets: Medical & Veterinary Mycology N2 - Patients with tinea corporis/cruris, arising predominantly from Trichophyton rubrum, or with tinea versicolor [Malassezia furfur infection] were treated for 2 wks with bifonazole 1% solution or solution vehicle. Other fungi cultured from patients included Candida albicans, Epidermophyton floccosum and T. mentagrophytes. Of 88 patients (75 male, 13 female) enrolled, 43 were treated with the active compound and 45 with the vehicle. The treatment groups in each study were comparable for all pertinent demographic factors including sex, race, age, weight, duration of disease, concomitant conditions, previous medication, and distribution of causative organisms. Diagnoses were validated by evidence of clinical signs and symptoms of infection, by positive KOH smear, and by culture (tinea corporis/cruris only) taken from scrapings of the infected areas. A successful result was determined on the basis of resolution of clinical signs and symptoms and negative culture or KOH smear at the end of the treatment period. The bifonazole 1% solution was found to be significantly more effective than the vehicle in the treatment of patients with tinea corporis/cruris (p<0.05) or tinea versicolor (p<0.05). The overall cure rate for evaluable patients with tinea corporis/cruris were 64% and 9% for active solution and vehicle, respectively. The corresponding cure rates for tinea versicolor were 50% and 5%. Adverse experiences were limited to 2 reports of burning sensations, one in each treatment group. Neither bifonazole solution nor the solution vehicle caused any clinically significant changes in laboratory parameters. KW - Antifungal agents KW - dermatomycoses KW - Dermatophytes KW - hosts KW - therapy KW - USA KW - Arthrodermataceae KW - Candida albicans KW - Epidermophyton floccosum KW - Malassezia furfur KW - man KW - Onygenales KW - Trichophyton mentagrophytes KW - Trichophyton rubrum KW - Candida KW - Saccharomycetales KW - Saccharomycetes KW - Saccharomycotina KW - Ascomycota KW - fungi KW - eukaryotes KW - Epidermophyton KW - Arthrodermataceae KW - Onygenales KW - Eurotiomycetes KW - Pezizomycotina KW - Malassezia KW - Malasseziales KW - Ustilaginomycotina KW - Basidiomycota KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - Trichophyton KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - dermatophytoses KW - fungistats KW - fungus KW - Hyphomycetes KW - therapeutics KW - United States of America KW - Parasites, Vectors, Pathogens and Biogenic Diseases of Humans (VV200) (Discontinued March 2000) KW - Pesticides and Drugs (General) (HH400) KW - Human Toxicology, Poisoning and Pharmacology (VV800) (Discontinued March 2000) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=19881200336&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Meeting exceptional nutritional needs. 2. Elemental enteral alimentation. AU - Feldtman, R. W. AU - Andrassy, R. J. JO - Postgraduate Medicine JF - Postgraduate Medicine Y1 - 1978/// VL - 64 IS - 3 SP - 65...74 EP - 65...74 SN - 0032-5481 AD - Feldtman, R. W.: US Air Force Academy Hospital, US Air Force Academy, CO 80840, USA. N1 - Accession Number: 19801407079. Publication Type: Journal Article. Language: English. Number of References: 34 ref. Subject Subsets: Human Nutrition KW - elemental diets KW - Nutrition Related Disorders and Therapeutic Nutrition (VV130) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=19801407079&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Meeting exceptional nutritional needs. 1. Total parenteral nutrition. AU - Feldtman, R. W. AU - Andrassy, R. J. JO - Postgraduate Medicine JF - Postgraduate Medicine Y1 - 1978/// VL - 64 IS - 2 SP - 64...77 EP - 64...77 SN - 0032-5481 AD - Feldtman, R. W.: US Air Force Academy Hospital, US Air Force Academy, CO 80840, USA. N1 - Accession Number: 19801407078. Publication Type: Journal Article. Language: English. Number of References: 51 ref. Subject Subsets: Human Nutrition KW - parenteral feeding KW - Man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - Nutrition Related Disorders and Therapeutic Nutrition (VV130) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=19801407078&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - A nomogram to predict lean body mass in men. AU - Fuchs, R. J. AU - Theis, C. F. AU - Lancaster, M. C. JO - American Journal of Clinical Nutrition JF - American Journal of Clinical Nutrition Y1 - 1978/// VL - 31 IS - 4 SP - 673 EP - 678 SN - 0002-9165 AD - Fuchs, R. J.: United States Air Force School of Aerospace Medicine, Brooks Air Force Base, Tex. 78235, USA. N1 - Accession Number: 19781474826. Publication Type: Journal Article. Language: English. Number of References: 15 ref. Subject Subsets: Human Nutrition N2 - A 3-scale nomogram is given to predict lean body mass in men from height and the circumference of the flexed biceps. The prediction equation used in constructing the nomogram was established from information on 198 US Air Force crewmen. Lean body mass was estimated by standard tritium dilution. The equation was validated on 65 additional airmen, comparing measurements obtained by tritium dilution, 40K whole-body counting and water displacement. A second nomogram shows the flexibility in using the anthropometric-type prediction of whole-body composition to arrive at personalized weight standards. KW - body lean mass KW - estimation KW - Man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - lean body mass KW - Techniques and Methodology (ZZ900) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=19781474826&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - A method for simulating subsurface disposal of herbicides. AU - Cupello, J. M. AU - Young, A. L. AU - Smith, J. C. H. JO - Weed Science JF - Weed Science Y1 - 1977/// VL - 25 IS - 4 SP - 368 EP - 372 SN - 0043-1745 AD - Cupello, J. M.: US Air Force Academy, C080480, USA. N1 - Accession Number: 19771935814. Publication Type: Journal Article. Language: English. Number of References: 14 ref. Registry Number: 25168-15-4, 2545-59-7, 3813-14-7, 57213-69-1, 7173-98-0, 93-76-5, 93-79-8, 1929-73-3, 2008-39-1, 25168-26-7, 2569-10-9, 3599-58-4, 5742-19-8, 94-11-1, 94-75-7, 94-80-4. Subject Subsets: Soils & Fertilizers; Weeds N2 - Specially designed growth boxes were used to simulate field subsurface injection of phenoxy herbicides. Sorghum (Sorghum vulgare Pers.) seedlings were grown in stainless steel containers (inserts) which were placed in plexiglass boxes containing a soil layer that had received 2,240 kg/ha of a 50:50 mixture of the n-butyl esters of 2,4-D [(2,4-dichlorophenoxy)-acetic acid] and 2,4,5-T [(2,4,5-trichlorophenoxy)-acetic acid]. Plant height data were collected periodically for all treatments. Subsurface herbicide application to both intact and cut root systems significantly altered root growth. Plants with treated, intact root systems showed retarded growth which became more pronounced with time. Plants whose root systems were treated, and cut on day 22, showed an initial acceleration of growth; a trend which eventually reversed itself and resulted in control plant height exceeding that of treated plants. KW - 2,4,5-T KW - 2,4-D KW - bioassays KW - crops KW - damage KW - deformities KW - disposal KW - herbicides KW - mixtures KW - public health engineering KW - residues KW - techniques KW - toxicology KW - usage KW - Colorado KW - USA KW - sorghum KW - Sorghum bicolor KW - Poaceae KW - Cyperales KW - monocotyledons KW - angiosperms KW - Spermatophyta KW - plants KW - eukaryotes KW - Sorghum KW - Great Plains States of USA KW - USA KW - APEC countries KW - Developed Countries KW - North America KW - America KW - OECD Countries KW - Mountain States of USA KW - Western States of USA KW - (2,4,5-trichlorophenoxy)acetic acid KW - (2,4-dichlorophenoxy)acetic acid KW - disposal in soil KW - herbicide disposal KW - United States of America KW - weedicides KW - weedkillers KW - Techniques and Methodology (ZZ900) KW - Pests, Pathogens and Biogenic Diseases of Plants (FF600) (Discontinued March 2000) KW - Plant Disorders and Injuries (Not caused directly by Organisms) (FF700) KW - Environmental Tolerance of Plants (FF900) KW - Weeds and Noxious Plants (FF500) KW - Pathogen, Pest, Parasite and Weed Management (General) (HH000) KW - Engineering and Equipment (General) (NN000) KW - Wastes (General) (XX000) KW - Pesticides and Drugs (General) (HH400) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=lhh&AN=19771935814&site=ehost-live&scope=site DP - EBSCOhost DB - lhh ER - TY - JOUR T1 - Acceleration of wound healing in man with zinc sulphate given by mouth. AU - PORIES, W. J. AU - HENZEL, J. H. AU - ROB, C. G. AU - STRAIN, W. H. JO - Lancet JF - Lancet Y1 - 1967/// VL - 1 SP - 121 EP - 124 AD - PORIES, W. J.: Surg. Serv. Branch, United States Air Force Hosp., Wright-Patterson Air Force Base, Ohio. N1 - Accession Number: 19671407077. Publication Type: Journal Article. Language: English. Registry Number: 7440-66-6. N2 - After surgery for the removal of pilonidal sinuses groups of 10 young men were given normal diets to appetite alone or with 150 mg elemental Zn daily as ZnSO4. 7H2O capsules in milk or after a meal. Wound healing was significantly faster in the men given Zn and no toxic side effects were noted during the 43 to 61 days of the trial.-A. T. KW - adverse effects KW - appetite KW - diets KW - healing KW - men KW - milk KW - oral administration KW - surgery KW - wounds KW - zinc KW - man KW - Homo KW - Hominidae KW - Primates KW - mammals KW - vertebrates KW - Chordata KW - animals KW - eukaryotes KW - adverse reactions KW - Human Nutrition (General) (VV100) KW - Milk and Dairy Produce (QQ010) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=gha&AN=19671407077&site=ehost-live&scope=site DP - EBSCOhost DB - gha ER - TY - JOUR AU - Steele, Chuck T1 - Sober Men and True: Sailor Lives in the Royal Navy, 1900-1945. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 2008/04// VL - 34 IS - 3 M3 - Book Review SP - 520 EP - 522 SN - 0095327X AB - The article reviews the book "Sober Men and True: Sailor Lives in the Royal Navy, 1900-1945," by Christopher McKee. KW - NONFICTION KW - GREAT Britain. Royal Navy KW - MCKEE, Christopher KW - SOBER Men & True: Sailor Lives in the Royal Navy 1900-1945 (Book) N1 - Accession Number: 31543060; Steele, Chuck 1; Affiliation: 1: United States Air Force Academy; Source Info: Apr2008, Vol. 34 Issue 3, p520; Subject Term: NONFICTION; Company/Entity: GREAT Britain. Royal Navy; Reviews & Products: SOBER Men & True: Sailor Lives in the Royal Navy 1900-1945 (Book); People: MCKEE, Christopher; Number of Pages: 3p; Document Type: Book Review L3 - 10.117710095327X07307006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31543060&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yoonessi, Mitra AU - Toghiani, Hossein AU - Wheeler, Robert AU - Porcar, Lionel AU - Kline, Steve AU - Pittman, Charles U. T1 - Neutron scattering, electron microscopy and dynamic mechanical studies of carbon nanofiber/phenolic resin composites JO - Carbon JF - Carbon Y1 - 2008/04// VL - 46 IS - 4 M3 - Article SP - 577 EP - 588 SN - 00086223 AB - Abstract: Carbon nanofiber (CNF)/resole phenolic resin (Hitco 134A) composites exhibited very large increases of bending storage modulus above the glass transition temperature and had higher glass transition temperatures with increasing CNF weight percentage. Small angle neutron scattering (SANS) from dilute suspensions of surface-oxidized CNF in D2O exhibited a Guinier plateau in the q range examined, indicating that isolated scatterers exist. The CNF dispersion, average fiber diameter, average core diameter and polydispersity within the composites and in D2O were quantified by approximating the small angle neutron scattering data with a hollow tube model. The scattering from CNF/phenolic resin composites exhibited a q −4 power law behavior, indicating the presence of sharp interfaces between fibers and phenolic resin. Surface-oxidized (PR-19-PS) CNF nanocomposites exhibited lower surface to volume ratio values and larger shell thickness compared with heat-treated (PR-19-HT) CNF composites. However, carbon nanofibers, with and without oxygenated surface groups, exhibited some agglomerates with fractal dimensions within the phenolic resin composites. Fiber surface treatment with nitric acid appears to promote dispersion and results in looser bundles of nested fiber networks. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON KW - NANOFIBERS KW - PHENOL KW - GUMS & resins KW - COMPOSITE materials N1 - Accession Number: 31407356; Yoonessi, Mitra 1; Email Address: mitra.yoonessi@unh.edu Toghiani, Hossein 2 Wheeler, Robert 3 Porcar, Lionel 4,5 Kline, Steve 4 Pittman, Charles U. 6; Affiliation: 1: Department of Chemical Engineering, University of New Hampshire, NH 03824, United States 2: Dave C. Swalm School of Chemical Engineering, Mississippi State, MS 39762, United States 3: Wright Patterson Air Force Research Laboratory, WPAFB, OH 45433, United States 4: NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, United States 5: University of Maryland College Park, United States 6: Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, United States; Source Info: Apr2008, Vol. 46 Issue 4, p577; Subject Term: CARBON; Subject Term: NANOFIBERS; Subject Term: PHENOL; Subject Term: GUMS & resins; Subject Term: COMPOSITE materials; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.carbon.2008.01.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31407356&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - He, Guang S. AU - Tan, Loon-seng AU - Zheng, Qingdong AU - Prasad, Paras N. T1 - Multiphoton Absorbing Materials: Molecular Designs, Characterizations, and Applications. JO - Chemical Reviews JF - Chemical Reviews Y1 - 2008/04// VL - 108 IS - 4 M3 - Article SP - 1245 EP - 1330 SN - 00092665 AB - The article focuses on multiphoton absorbing materials. Topics including major applications of multiphoton excitation (MPE), and multiphoton active materials are discussed. MPA-based optical limiting offers optical sensors' protection from laser radiation-induced damage. MPE principles can be used for optical data storage and microfabrication of 3D micropart or microdevice in multiphoton active materials by using laser beams. KW - MULTIPHOTON processes KW - LASER beams KW - LASERS in chemistry KW - QUANTUM optics KW - EXCITED state chemistry N1 - Accession Number: 31854627; He, Guang S. 1; Email Address: gshe@acsu.buffalo.edu Tan, Loon-seng 2 Zheng, Qingdong 1 Prasad, Paras N. 1; Affiliation: 1: Institute for Lasers, Photonics and Biophotonics, State University of New York at Buffalo, New York, and Polymer Branch, Materials & Manufacturing Directorate 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio; Source Info: Apr2008, Vol. 108 Issue 4, p1245; Subject Term: MULTIPHOTON processes; Subject Term: LASER beams; Subject Term: LASERS in chemistry; Subject Term: QUANTUM optics; Subject Term: EXCITED state chemistry; Number of Pages: 56p; Illustrations: 4 Black and White Photographs, 49 Diagrams, 5 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31854627&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fredrickson, B.M. AU - Schoeppner, G.A. AU - Mollenhauer, D.H. AU - Palazotto, A.N. T1 - Application of three-dimensional spline variational analysis for composite repair JO - Composite Structures JF - Composite Structures Y1 - 2008/04// VL - 83 IS - 2 M3 - Article SP - 119 EP - 130 SN - 02638223 AB - Abstract: The purpose of this research was to apply a non-commercialized spline-based (B-spline analysis method or BSAM) computer program to model and predict strain fields in two composite repairs, the scarf joint and the stepped-lap joint, subjected to static tensile loading. Test specimens with scarf and stepped-lap joints were fabricated using quasi-isotropic 16 ply panels made from IM6/3501-6 pregreg with a [+452/02/−452/902]S lay-up. Moiré interferometry, a high-resolution full-field optical technique used to measure displacements on a surface, was used to determine experimental strain data. Full-field strains along the free-edge were predicted and compared to experimental strain data. Line plots are generated from predicted and experimental data extracted at several points across the width of the repair to provide a quantitative comparison. Overall, both the full-field strain images and line plots show good agreement between the BSAM analysis and the experimental data. [Copyright &y& Elsevier] AB - Copyright of Composite Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER software KW - DIMENSIONAL analysis KW - MATHEMATICAL physics KW - PHYSICAL measurements KW - Bonded joints KW - Scarf joints KW - Step-lap joints KW - Three-dimensional analysis N1 - Accession Number: 27784495; Fredrickson, B.M. 1 Schoeppner, G.A. 2 Mollenhauer, D.H. 2 Palazotto, A.N. 1; Email Address: Anthony.palazotto@afit.edu; Affiliation: 1: Air Force Institute of Technology, 2950 Hobson Way, WPAFB, OH 45433-7765, United States 2: Air Force Research Laboratory, United States; Source Info: Apr2008, Vol. 83 Issue 2, p119; Subject Term: COMPUTER software; Subject Term: DIMENSIONAL analysis; Subject Term: MATHEMATICAL physics; Subject Term: PHYSICAL measurements; Author-Supplied Keyword: Bonded joints; Author-Supplied Keyword: Scarf joints; Author-Supplied Keyword: Step-lap joints; Author-Supplied Keyword: Three-dimensional analysis; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.compstruct.2007.04.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27784495&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cleereman, Kevin AU - Cheatham, Michelle AU - Thirunarayan, Krishnaprasad T1 - Mechanisms for improved covariant type-checking JO - Computer Languages, Systems & Structures JF - Computer Languages, Systems & Structures Y1 - 2008/04// VL - 34 IS - 1 M3 - Article SP - 1 EP - 17 SN - 14778424 AB - Abstract: Covariant types are a powerful language feature for improving type-safety. However, covariant types complicate type-checking when combined with polymorphism. We propose two new language features that can improve type-checking in a language with polymorphism and covariant typing, and also have the potential to improve efficiency as well. [Copyright &y& Elsevier] AB - Copyright of Computer Languages, Systems & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER programming KW - POLYMORPHISM (Zoology) KW - VARIATION (Biology) KW - AUTOMATION KW - Covariance KW - Object-oriented programming languages KW - Type checking N1 - Accession Number: 25827290; Cleereman, Kevin 1; Email Address: kevin.cleereman@wpafb.af.mil Cheatham, Michelle 1 Thirunarayan, Krishnaprasad 2; Affiliation: 1: Air Force Research Laboratory, Information Directorate, Collaborative Technology Branch, WPAFB, OH 45433-7334, USA 2: Department of Computer Science and Engineering, Wright State University, Dayton, OH 45435, USA; Source Info: Apr2008, Vol. 34 Issue 1, p1; Subject Term: COMPUTER programming; Subject Term: POLYMORPHISM (Zoology); Subject Term: VARIATION (Biology); Subject Term: AUTOMATION; Author-Supplied Keyword: Covariance; Author-Supplied Keyword: Object-oriented programming languages; Author-Supplied Keyword: Type checking; NAICS/Industry Codes: 541511 Custom Computer Programming Services; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); NAICS/Industry Codes: 541519 Other Computer Related Services; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.cl.2006.03.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25827290&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Balster, Lori M. AU - Corporan, Edwin AU - DeWitt, Matthew J. AU - Edwards, J. Timothy AU - Ervin, Jamie S. AU - Graham, John L. AU - Lee, Seong-Young AU - Pal, Sibtosh AU - Phelps, Donald K. AU - Rudnick, Leslie R. AU - Santoro, Robert J. AU - Schobert, Harold H. AU - Shafer, Linda M. AU - Striebich, Richard C. AU - West, Zachary J. AU - Wilson, Geoffrey R. AU - Woodward, Roger AU - Zabarnick, Steven T1 - Development of an advanced, thermally stable, coal-based jet fuel JO - Fuel Processing Technology JF - Fuel Processing Technology Y1 - 2008/04// VL - 89 IS - 4 M3 - Article SP - 364 EP - 378 SN - 03783820 AB - Abstract: A candidate coal-based jet fuel that would serve the dual purpose of providing propulsion energy and excellent heat-sink capabilities was produced at pilot-plant scale by hydrotreating a 1:1 mixture of coal-derived refined chemical oil and petroleum-derived light cycle oil. The fuel was characterized using current specification methods for JP-8 fuel. Oxidative and pyrolytic thermal stability tests were conducted. Combustion tests were performed in a model high-pressure gas turbine combustor and in a T-63 turboshaft engine. Low-temperature viscosity properties and O-ring swelling were also evaluated. The candidate coal-based fuel meets most JP-8 specifications, although a few results were outside the current specification limits. The major hydrocarbon class in the coal-based fuel is cycloalkanes (e.g. decalin and its derivatives), which accounts for this fuel being significantly more dense than JP-8. The higher density could be of importance for volume-limited applications in aircraft and missiles. The candidate coal-based fuel showed excellent thermal stability, better than a JP-8 containing the currently qualified JP-8+100 additive package. In the model combustor, soot formation characteristics were essentially identical to JP-8; in the T-63 engine, the overall emissions produced were only slightly greater than from a typical JP-8. The candidate coal-based fuel appears to remain a single-phase liquid down to −70 °C, desirable behavior for long-duration, high-altitude flights. The coal-based fuel has the same swelling characteristics for nitrile O-rings as does JP-8. [Copyright &y& Elsevier] AB - Copyright of Fuel Processing Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JET planes -- Fuel KW - CYCLOALKANES KW - NITRILES KW - PROPULSION systems KW - Combustion KW - Jet fuel KW - Stability KW - Viscosity N1 - Accession Number: 31401193; Balster, Lori M. 1 Corporan, Edwin 2 DeWitt, Matthew J. 1 Edwards, J. Timothy 2 Ervin, Jamie S. 1 Graham, John L. 1 Lee, Seong-Young 3 Pal, Sibtosh 3 Phelps, Donald K. 2 Rudnick, Leslie R. 4 Santoro, Robert J. 3,4 Schobert, Harold H. 4; Email Address: Schobert@ems.psu.edu Shafer, Linda M. 1 Striebich, Richard C. 1 West, Zachary J. 1 Wilson, Geoffrey R. 5 Woodward, Roger 3 Zabarnick, Steven 1; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0116, USA 2: Air Force Research Laboratory, Propulsion Directorate, AFRL/PRTG Building 490, 1790 Loop Road N, Wright-Patterson Air Force Base, OH 45433-7103, USA 3: Propulsion Engineering Research Center, The Pennsylvania State University, University Park, PA 16802, USA 4: The Energy Institute, The Pennsylvania State University, University Park, PA 16802, USA 5: PARC Technical Services, 100 William Pitt Way, Harmarville, PA 15238, USA; Source Info: Apr2008, Vol. 89 Issue 4, p364; Subject Term: JET planes -- Fuel; Subject Term: CYCLOALKANES; Subject Term: NITRILES; Subject Term: PROPULSION systems; Author-Supplied Keyword: Combustion; Author-Supplied Keyword: Jet fuel; Author-Supplied Keyword: Stability; Author-Supplied Keyword: Viscosity; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.fuproc.2007.11.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31401193&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Scott, J. J. AU - Gray, Robert T1 - A Comparison of Tactile, Visual, and Auditory Warnings for Rear-End Collision Prevention in Simulated Driving. JO - Human Factors JF - Human Factors Y1 - 2008/04// VL - 50 IS - 2 M3 - Article SP - 265 EP - 275 SN - 00187208 AB - Objective: This study examined the effectiveness of rear-end collision warnings presented in different sensory modalities as a function of warning timing in a driving simulator. Background: The proliferation of in-vehicle information and entertainment systems threatens driver attention and may increase the risk of rear-end collisions. Collision warning systems have been shown to improve inattentive and/or distracted driver response time (RT) in rear-end collision situations. However, most previous rear-end collision warning research has not directly compared auditory, visual, and tactile warnings. Method: Sixteen participants in a fixed-base driving simulator experienced four warning conditions: no warning, visual, auditory, and tactile. The warnings activated when the time-to-collision (TTC) reached a critical threshold of 3.0 or 5.0 s. Driver RT was captured from a warning below critical threshold to brake initiation. Results: Drivers with a tactile warning had the shortest mean RT. Drivers with a tactile warning had significantly shorter RT than drivers without a warning and had a significant advantage over drivers with visual warnings. Conclusion: Tactile warnings show promise as effective rear-end collision warnings. Application: The results of this study can be applied to the future design and evaluation of automotive warnings designed to reduce rear-end collisions. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TACTILE sensors KW - DETECTORS KW - REACTION time KW - SENSORY evaluation KW - SPACE simulators KW - VISUAL perception KW - VISUAL learning N1 - Accession Number: 31940998; Scott, J. J. 1; Email Address: jeffrey.scott@edwards.af.mil Gray, Robert 2; Affiliation: 1: United States Air Force, Edwards Air Force Base, California 2: Arizona State University, Mesa, Arizona; Source Info: Apr2008, Vol. 50 Issue 2, p265; Subject Term: TACTILE sensors; Subject Term: DETECTORS; Subject Term: REACTION time; Subject Term: SENSORY evaluation; Subject Term: SPACE simulators; Subject Term: VISUAL perception; Subject Term: VISUAL learning; Number of Pages: 12p; Document Type: Article L3 - 10.1518/001872008X250674 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31940998&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McInroy, John E. AU - Robertson, Lawrence M. AU - Erwin, R. Scott T1 - Autonomous Distant Visual Silhouetting of Satellites. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2008/04// VL - 44 IS - 2 M3 - Article SP - 801 EP - 808 SN - 00189251 AB - This paper develops a new technique useful for the autonomous distant visual silhouetting of satellites. New statistical straight line snakes (SSLS) prove efficient in finding the silhouette, even in the unilluminated case. The silhouette is composed of straight line segments, which are easy to calculate, fit the straight lines inherent in man-made objects, and lend themselves to further processing (pose estimation, template matching, etc.) Simulations illustrate the technique on images obtained when viewing low Earth orbit satellites from the ground. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILHOUETTES KW - ARTIFICIAL satellites KW - INFORMATION processing KW - TEMPLATE matching (Digital image processing) KW - PATTERN recognition systems KW - DIGITAL image processing N1 - Accession Number: 33542929; McInroy, John E. 1; Email Address: mcinroy@uwyo.edu Robertson, Lawrence M. 2 Erwin, R. Scott 2; Affiliation: 1: Dept. of Electrical and Computer Engineering, University of Wyoming, 1000 E. University Ave., Laramie, WY 82071 2: Air Force Research Laboratory, Space Vehicles Directorate, AFRL/VSSV, Kirtland AFB, NM 87117-5776; Source Info: Apr2008, Vol. 44 Issue 2, p801; Subject Term: SILHOUETTES; Subject Term: ARTIFICIAL satellites; Subject Term: INFORMATION processing; Subject Term: TEMPLATE matching (Digital image processing); Subject Term: PATTERN recognition systems; Subject Term: DIGITAL image processing; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 8p; Illustrations: 8 Diagrams; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33542929&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kirawanich, Phumin AU - Yakura, Susumu J. AU - Islam, Naz E. T1 - Simulating Large Electrical Systems for Wideband Pulse Interactions Using the Topological Modular Junction Concept. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2008/04//Apr2008 Part 1 of 2 VL - 36 IS - 2 M3 - Article SP - 435 EP - 442 SN - 00933813 AB - Experiment and electromagnetic-topology (EMT)-based simulation are performed to study the effects of wideband EM pulses on large electrical systems. The EMT simulation relies on the topological modular junction concept with the simultaneous use of a number of analytical and computational methods, including the transmission-line-matrix compaction method, the finite-difference time-domain method, and the reciprocity theorem, to come up with a final result. The EMT simulation approach that uses the topological modular concept is an effective way to perform tradeoff analysis of different wideband pulse excitations without having to repeat the simulations of the entire system. As part of validating the EMT simulation approach, we performed the experiment to measure the current induced by a wideband EM pulse on a cable behind a slot aperture. The simulated current and the measured current resulted in good agreement with each other, thus demonstrating the validity of the proposed simulation scheme. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC theory KW - SIMULATION methods & models KW - BROADBAND communication systems KW - SYNTHETIC apertures KW - MATHEMATICAL analysis KW - SYSTEMS design KW - EVALUATION KW - TOPOLOGICAL dynamics KW - FINITE element method KW - HIGH technology -- Research KW - Aperture-cable coupling KW - electromagnetic topology (EMT) KW - wideband pulse interaction N1 - Accession Number: 31744445; Kirawanich, Phumin 1 Yakura, Susumu J. 2; Email Address: susumu.yakura@kirtland.af.mil Islam, Naz E. 1; Email Address: islamn@missouri.edu; Affiliation: 1: Department of Electrical and Computer Engineering, University of Missouri--Columbia, Columbia, MO 65203 USA 2: Modeling and Effects Branch, High Power Microwave Division, Directed Energy Directorate, Air Force Research Laboratory, Kirtland Air Force Base, NM 87117 USA; Source Info: Apr2008 Part 1 of 2, Vol. 36 Issue 2, p435; Subject Term: ELECTROMAGNETIC theory; Subject Term: SIMULATION methods & models; Subject Term: BROADBAND communication systems; Subject Term: SYNTHETIC apertures; Subject Term: MATHEMATICAL analysis; Subject Term: SYSTEMS design; Subject Term: EVALUATION; Subject Term: TOPOLOGICAL dynamics; Subject Term: FINITE element method; Subject Term: HIGH technology -- Research; Author-Supplied Keyword: Aperture-cable coupling; Author-Supplied Keyword: electromagnetic topology (EMT); Author-Supplied Keyword: wideband pulse interaction; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; Number of Pages: 8p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1109/TPS.2008.918767 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31744445&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, P. AU - Markow, J. S. AU - Wicks, M. C. T1 - Likelihood ratio test-based interval estimate of the number of signals present in a measurement. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2008/04// VL - 2 IS - 2 M3 - Article SP - 111 EP - 120 PB - Institution of Engineering & Technology SN - 17518784 AB - A multi-step procedure is proposed to construct a confidence interval for the number of signals present and a comparative analysis of our procedure with other existing procedures is conducted. The proposed procedure uses likelihood ratio statistics and its simulated percentiles sequentially to determine the upper and lower limits for the confidence interval. A preference zone in the parameter space of the population eigenvalues is defined and it is used to separate the signals and the noise. The least favourable configuration (LFC) is derived asymptotically under the preference zone. Under the LFC, the procedure parameters necessary to attain the required confidence level are determined. A comparative analysis with other procedures is presented in tables. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONFIDENCE intervals KW - SIGNALS & signaling KW - COMPARATIVE studies KW - STATISTICS KW - EIGENVALUES KW - NOISE KW - STATISTICAL hypothesis testing N1 - Accession Number: 31176155; Chen, P. 1; Email Address: pinchen@syr.edu Markow, J. S. 2 Wicks, M. C. 3; Affiliation: 1: Department of Mathematics, Syracuse University, Syracuse, NY 13244-1150, USA 2: Radar Signal Processing Branch, Air Force Research Laboratory, Rome, NY 13441-4514, USA 3: Sensors Directorate, Air Force Research Laboratory, Rome, NY 13441-4514, USA; Source Info: Apr2008, Vol. 2 Issue 2, p111; Subject Term: CONFIDENCE intervals; Subject Term: SIGNALS & signaling; Subject Term: COMPARATIVE studies; Subject Term: STATISTICS; Subject Term: EIGENVALUES; Subject Term: NOISE; Subject Term: STATISTICAL hypothesis testing; Number of Pages: 10p; Illustrations: 7 Charts, 4 Graphs; Document Type: Article L3 - 10.1049/iet-rsn:20060050 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31176155&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Enloe, C. L. AU - McHarg, M. G. AU - McLaughlin, T. E. T1 - Time-correlated force production measurements of the dielectric barrier discharge plasma aerodynamic actuator. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/04// VL - 103 IS - 7 M3 - Article SP - 073302 PB - American Institute of Physics SN - 00218979 AB - An atmospheric-pressure dielectric barrier discharge (DBD) plasma, operated as a surface-mode discharge with a single encapsulated electrode and an asymmetric electrode alignment, is known to couple momentum into the surrounding neutral fluid and through this coupling has shown considerable promise as an aerodynamic flow control device. Several different models, often with conflicting explanations, have been offered to explain the process of this momentum coupling. The DBD is known to proceed in two stages during the discharge cycle, one on the positive-going portion of the applied ac high-voltage waveform and the other on the negative-going portion. By using the actuator to drive a second-order mechanical system, we show here that the great majority (97%) of the momentum coupling occurs during the negative-going portion of the discharge cycle and we relate this behavior to dramatic differences in the structure of the discharge revealed with high-speed photography. This information is critical in evaluating descriptions of the momentum-coupling processes in the plasma. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 48992262; Enloe, C. L. 1 McHarg, M. G. 1 McLaughlin, T. E. 2; Affiliation: 1: Department of Physics, United States Air Force Academy, Colorado 80840, 2: Department of Aeronautics, United States Air Force Academy, Colorado 80840,; Source Info: Apr2008, Vol. 103 Issue 7, p073302; Number of Pages: 7p; Document Type: Article L3 - 10.1063/1.2896590 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48992262&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mukherjee, Biswanath AU - Ray, Asim K. AU - Sharma, Ashwani K. AU - Cook, Michael J. AU - Chambrier, Isabelle T1 - A simply constructed lead phthalocyanine memory diode. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/04// VL - 103 IS - 7 M3 - Article SP - 074507 PB - American Institute of Physics SN - 00218979 AB - Random-access memory switches were fabricated by using 70 nm thick spun films of nonperipherally octahexyl substituted lead phthalocyanine (PbPc) molecules sandwiched between indium tin oxide (ITO) substrates and vacuum-deposited aluminum (Al) top electrodes. The reproducible hysteresis behavior in terms of high and low conductance states was observed in the current-voltage characteristics recorded for the device at room temperature, and the on/off ratio for this single layered device was estimated to be as large as 103. The bistable electrical switching effects were attributed to the existence of the depletion layer at the ITO/PbPc and energetically exponential distribution in energy of traps in nonactive region of PbPc films. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 48992218; Mukherjee, Biswanath 1 Ray, Asim K. 2 Sharma, Ashwani K. 3 Cook, Michael J. 4 Chambrier, Isabelle 4; Affiliation: 1: Solid State Physics Department, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, 2: Department of Materials, Queen Mary, University of London, London E1 4NS, 3: Space Vehicles Directorate, Air Force Research Laboratory, 3550 Aberdeen Avenue, SE Kirtland AFB, New Mexico 87117, 4: School of Chemical Sciences and Pharmacy, University of East Anglia, Norwich NR4 7TJ,; Source Info: Apr2008, Vol. 103 Issue 7, p074507; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.2903061 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48992218&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, M. Q. AU - Turgut, Z. AU - Ma, B. M. AU - Chen, Z. M. AU - Lee, D. AU - Higgins, A. AU - Chen, C. H. AU - Liu, S. AU - Chu, S. Y. AU - Horwath, J. C. AU - Fingers, R. T. T1 - Effects of Zr, Nb, and Cu substitutions on magnetic properties of melt-spun and hot deformed bulk anisotropic nanocomposite SmCo type magnets. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/04// VL - 103 IS - 7 M3 - Article SP - 07E134 PB - American Institute of Physics SN - 00218979 AB - Structure and magnetic properties of both melt-spun and hot deformed bulk Sm–Co type nanocomposite magnets have been investigated with various metal additions, including Zr, Cu, and Nb. The Zr and Nb additions play important roles in constraining grain growth, resulting in an increase of coercivity Hc. The Cu addition significantly improves the squareness of BH loops as well as the energy product (BH)max. A typical hot deformed bulk anisotropic nanocomposite SmCo type magnet with Mr(hard)/Mr(easy)∼0.4, Hc∼9 kOe and (BH)max of 13.2 MG Oe was obtained. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 48992621; Huang, M. Q. 1 Turgut, Z. 1 Ma, B. M. 2 Chen, Z. M. 2 Lee, D. 3 Higgins, A. 3 Chen, C. H. 3 Liu, S. 3 Chu, S. Y. 4 Horwath, J. C. 5 Fingers, R. T. 5; Affiliation: 1: UES Inc./Air Force Research Laboratory, 4401 Dayton-Xenia Road, Dayton, Ohio 45432, 2: Magnequench Inc., 61 Science Park Road, 01-17 Galen, Singapore 117525, 3: Magnetics Laboratory, University of Dayton, Dayton, Ohio 45469, 4: Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, 5: Air Force Research Laboratory (AFRL), Wright-Patterson Air Force Base, Ohio 45433,; Source Info: Apr2008, Vol. 103 Issue 7, p07E134; Number of Pages: 3p; Document Type: Article L3 - 10.1063/1.2831334 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48992621&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Forester, Joseph P. AU - Ong, Bruce A. AU - Fallot, André T1 - Can Equal Access to Care Eliminate Racial Disparities in Pediatric Asthma Outcomes? JO - Journal of Asthma JF - Journal of Asthma Y1 - 2008/04// VL - 45 IS - 3 M3 - Article SP - 211 EP - 214 SN - 02770903 AB - A survey was given to the parents of 80 children with asthma between the ages of 3 and 18 years at the Pediatric Pulmonology Clinics of three military treatment facilities to evaluate asthma management and outcomes for different racial groups. Results demonstrated that management practices for the three groups were similar and that there were no significant differences in emergency department visits, prescription of oral steroids, or in the number of hospitalizations across the three groups. These findings suggest that equal access to care may allow children of different racial backgrounds to receive similar asthma care and achieve similar outcomes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Asthma is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASTHMA in children KW - ALLERGY in children KW - HEALTH services accessibility KW - ASTHMATICS KW - EMERGENCY medical services KW - ASTHMA KW - asthma KW - ethnicity KW - health care KW - Military Health System KW - minority N1 - Accession Number: 31657127; Forester, Joseph P. 1; Email Address: joseph.forester@usafa.af.mil Ong, Bruce A. 2 Fallot, André 3; Affiliation: 1: US Air Force Academy, 10th MDG, Department of Pediatrics, USAFA, Colorado, USA 2: Hunter Army Airfield, Savannah, Georgia, USA 3: Department of Pediatrics, Madigan Army Medical Center, Tacoma, Washington, USA; Source Info: Apr2008, Vol. 45 Issue 3, p211; Subject Term: ASTHMA in children; Subject Term: ALLERGY in children; Subject Term: HEALTH services accessibility; Subject Term: ASTHMATICS; Subject Term: EMERGENCY medical services; Subject Term: ASTHMA; Author-Supplied Keyword: asthma; Author-Supplied Keyword: ethnicity; Author-Supplied Keyword: health care; Author-Supplied Keyword: Military Health System; Author-Supplied Keyword: minority; NAICS/Industry Codes: 624230 Emergency and Other Relief Services; NAICS/Industry Codes: 913130 Municipal police services; Number of Pages: 4p; Illustrations: 3 Charts; Document Type: Article L3 - 10.1080/02770900801890448 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31657127&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Krishnaswami, Kannan AU - Vangala, Shivashankar R. AU - Dauplaise, Helen M. AU - Allen, Lisa P. AU - Dallas, Gordon AU - Bakken, Daniel AU - Bliss, David F. AU - Goodhue, William D. T1 - Molecular beam epitaxy on gas cluster ion beam-prepared GaSb substrates: Towards improved surfaces and interfaces JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2008/04// VL - 310 IS - 7-9 M3 - Article SP - 1619 EP - 1626 SN - 00220248 AB - Abstract: We report results of a surface modification process for (100) GaSb using a gas cluster ion beam (GCIB) technique that removes chemical mechanical polish (CMP)-induced surface damage and replaces the native oxide with an engineered surface oxide, the composition of which depends on the reactive gas employed. X-ray photoelectron spectroscopy of O2-, CF4/O2-, and HBr-GCIB surface oxides is presented indicating the presence of mixed Ga- and Sb-oxides, with mostly Ga-oxides at the interface, that desorb at temperatures ranging 530–560°C. Cross-sectional transmission electron microscopy of molecular-beam epitaxy grown GaSb/AlGaSb layers showed that the HBr-GCIB surface produced a smooth dislocation-free substrate-to-epi transition with no discernable interface. Topography of epi surfaces, using atomic force microscopy, showed that GCIB surfaces resulted in characteristic step-terrace formations comprising monatomic steps and wide terraces. The HBr-GCIB process can be easily adapted to a large-scale manufacturing process to produce epi-ready GaSb substrates. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPITAXY KW - ION bombardment KW - CRYSTAL growth KW - MOLECULAR dynamics KW - A1. Gas cluster ion beam KW - A1. Surface processes KW - A3. Molecular beam epitaxy KW - B1. Antimonides KW - B1. Surface oxides KW - B2. GaSb N1 - Accession Number: 31581685; Krishnaswami, Kannan 1; Email Address: kannan.krishnaswami@pnl.gov Vangala, Shivashankar R. 2 Dauplaise, Helen M. 3 Allen, Lisa P. 4 Dallas, Gordon 4 Bakken, Daniel 4 Bliss, David F. 3 Goodhue, William D. 2; Affiliation: 1: Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA 99352, USA 2: Department of Physics, Photonics Center, University of Massachusetts, Lowell, MA 01854, USA 3: Air Force Research Laboratory/SNHC, Hanscom Air Force Base, MA 01731, USA 4: Galaxy Compound Semiconductors, Inc., 9922 E. Montgomery Avenue, Spokane, WA, USA; Source Info: Apr2008, Vol. 310 Issue 7-9, p1619; Subject Term: EPITAXY; Subject Term: ION bombardment; Subject Term: CRYSTAL growth; Subject Term: MOLECULAR dynamics; Author-Supplied Keyword: A1. Gas cluster ion beam; Author-Supplied Keyword: A1. Surface processes; Author-Supplied Keyword: A3. Molecular beam epitaxy; Author-Supplied Keyword: B1. Antimonides; Author-Supplied Keyword: B1. Surface oxides; Author-Supplied Keyword: B2. GaSb; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jcrysgro.2007.11.225 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31581685&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bhat, R. AU - Dutta, P.S. AU - Guha, S. T1 - Crystal growth and below-bandgap optical absorption studies in InAs for non-linear optic applications JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2008/04// VL - 310 IS - 7-9 M3 - Article SP - 1910 EP - 1916 SN - 00220248 AB - Abstract: Indium arsenide (InAs) is a direct bandgap semiconductor (E g=0.36eV) and is well suited for non-linear optic (NLO) applications. The NLO applications require high linear optical transmission for below-bandgap energy photons in the material. Due to this stringent criterion, there is a need for understanding the fundamental optical absorption mechanisms in the material as well as correlating them with the presence of native defects and impurities introduced during the crystal growth. In this paper, we will present the experimentally measured and theoretically analyzed infrared absorption in an undoped and Te-doped n-type InAs in the wavelength region of 4–20μm for horizontal Bridgman grown crystals. Transmission measurements at 300K were performed on samples of undoped and Te-doped n-type InAs with carrier concentration in the range of 2.6×1016–1.7×1017 cm−3. The dependences of various absorption mechanisms as a function of wavelength have been presented. Free carrier absorption by electrons is found to be the dominant absorption mechanism at longer wavelengths (λ>9μm) for all the samples. At shorter wavelengths (λ<9μm), for samples with carrier concentration close to the intrinsic carrier concentration (ni =1×1015 cm−3), the inter-valence band transitions by free holes contributes significantly to the total absorption. Unique fitting parameters have been deduced to theoretically explain the infrared absorption mechanism in InAs for the above-mentioned carrier concentration range. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSORPTION KW - CRYSTAL growth KW - CRYSTAL grain boundaries KW - TWINNING (Crystallography) KW - A1. Impurities KW - A2. Bridgman technique KW - A2. Growth from melt KW - B2. Nonlinear optic materials KW - B2. Semiconducting III–V materials KW - B3. Nonlinear optical N1 - Accession Number: 31581740; Bhat, R. 1; Email Address: rbhat1@irf.com Dutta, P.S. 1 Guha, S. 2; Affiliation: 1: Department of Electrical, Computer and Systems Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: Apr2008, Vol. 310 Issue 7-9, p1910; Subject Term: ABSORPTION; Subject Term: CRYSTAL growth; Subject Term: CRYSTAL grain boundaries; Subject Term: TWINNING (Crystallography); Author-Supplied Keyword: A1. Impurities; Author-Supplied Keyword: A2. Bridgman technique; Author-Supplied Keyword: A2. Growth from melt; Author-Supplied Keyword: B2. Nonlinear optic materials; Author-Supplied Keyword: B2. Semiconducting III–V materials; Author-Supplied Keyword: B3. Nonlinear optical; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jcrysgro.2007.11.191 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31581740&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Croft, M. AU - Jisrawi, N. AU - Zhong, Z. AU - Horvath, K. AU - Holtz, R. L. AU - Shepard, M. AU - Lakshmipathy, M. AU - Sadananda, K. AU - Skaritka, J. AU - Shukla, V. AU - Sadangi, R. K. AU - Tsakalakos, T. T1 - Stress Gradient Induced Strain Localization in Metals: High Resolution Strain Cross, Sectioning via Synchrotron X-Ray Diffraction. JO - Journal of Engineering Materials & Technology JF - Journal of Engineering Materials & Technology Y1 - 2008/04// VL - 130 IS - 2 M3 - Article SP - 0051 EP - 00510 SN - 00944289 AB - Strain localization in the presence of a stress gradient is a phenomenon common to many systems described by continuum mechanics. Variations of this complex phenomenon lead to interesting nonlinear effects in materials/engineering science as well as in other fields. Here, the synchrotron based energy dispersive x-ray diffraction (EDXRD) technique is used for high spatial resolution profiling of both compression and tension induced strain localization in important materials/engineering problems. Specifically, compression induced strain localization in shot peened materials and tension induced strain localization in the plastic zones adjoining the faces of a fatigue crack are profiled. The utility of the EDXRD synchrotron technique for nondestructively cross-sectioning strain variations on small length scales (down to 10-20 jim) is described. While the strain field profiling relies on the shift of the Bragg lines, the data show that plastic deformation regions can also consistently be seen in the broadening of the Bragg peaks through the full width at half maximum parameter~ Quantitative correlations between the synchrotron based x-ray determined deformations and suiface deformations, as measured by optical surface height profiling, are also made. [DO!: 10.1115/1.2840962] [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering Materials & Technology is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYNCHROTRONS KW - X-ray diffraction KW - CONTINUUM mechanics KW - LOCALIZATION theory KW - DEFORMATIONS (Mechanics) KW - X-ray diffractometer KW - PLASTICS KW - POLYCRYSTALS KW - MATERIALS -- Compression testing KW - B. residual stress KW - C. x-ray diffraction KW - metallic materials KW - nondestructive evaluation KW - plastic collapse N1 - Accession Number: 32027544; Croft, M. 1 Jisrawi, N. 2 Zhong, Z. 3 Horvath, K. 4 Holtz, R. L. 5 Shepard, M. 6 Lakshmipathy, M. 7 Sadananda, K. 8 Skaritka, J. 3 Shukla, V. 2 Sadangi, R. K. 2 Tsakalakos, T. 2; Affiliation: 1: Department of Physics Astronomy, Rutgers University, Piscataway, NJ 08854; National Synchrotron Light Source, Brookhaven National Laboratory, Upton, NY 11973 2: Materials Science and Engineering Department, Rutgers University, Piscataway, NJ 08854; Department of Basic Sciences, University of Sharjah, P.O. Box. 27272, Sharjah, United Arab Emirates 3: National Synchrotron Light Source, Brookhaven National Laboratory, Upton, NY 11973 4: Department of Physics Astronomy, Rutgers University, Piscataway, NJ 08854 5: Materials Science & Technology Division, Naval Research Laboratory, 4555 Overlook Avenue, SW, Washington, DC 20375 6: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, OH 45433-7817 7: Zygo Corporation, Laurel Brook Road, Middlefield, CT 06455 8: Technical Data Analysis, Inc., Falls Church, VA 22046; Source Info: Apr2008, Vol. 130 Issue 2, p0051; Subject Term: SYNCHROTRONS; Subject Term: X-ray diffraction; Subject Term: CONTINUUM mechanics; Subject Term: LOCALIZATION theory; Subject Term: DEFORMATIONS (Mechanics); Subject Term: X-ray diffractometer; Subject Term: PLASTICS; Subject Term: POLYCRYSTALS; Subject Term: MATERIALS -- Compression testing; Author-Supplied Keyword: B. residual stress; Author-Supplied Keyword: C. x-ray diffraction; Author-Supplied Keyword: metallic materials; Author-Supplied Keyword: nondestructive evaluation; Author-Supplied Keyword: plastic collapse; NAICS/Industry Codes: 326121 Unlaminated Plastics Profile Shape Manufacturing; NAICS/Industry Codes: 326199 All Other Plastics Product Manufacturing; NAICS/Industry Codes: 326198 All other plastic product manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 424610 Plastics Materials and Basic Forms and Shapes Merchant Wholesalers; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 10p; Illustrations: 3 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1115/1.2840962 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32027544&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Semiatin, S. L. AU - Nicolaou, P. D. AU - Thomas, J. P. AU - Turner, T. J. T1 - Defect Occurrence and Modeling for the Thermomechanical Processing of Aerospace Alloys. JO - Journal of Engineering Materials & Technology JF - Journal of Engineering Materials & Technology Y1 - 2008/04// VL - 130 IS - 2 M3 - Article SP - 10011 EP - 10018 SN - 00944289 AB - Mechanism-based models for the evolution of defects during the thermomechanical processing of aerospace titanium- and nickel-based alloys are reviewed. These defects in- clude those comprising microstructural/metal-flow irregularities and those that are dam- age related (i.e., cracks and cavities). The development of undesirable/nonuniform microstructures and cavities during the mill processing of alpha/beta titanium alloys is addressed first. Relatively simple, diffusion-based models of spheroidization and coarsening are applied to quantify the propensity for microstructure nonuniformities. Similarly, first-order micromechanical models have been formulated to estimate the effect of local crystallographic texture on nonuniform flow, the generation of triaxial stresses, and cayity growth/closure in alpha/beta titanium alloys with a colony-alpha microstructure. The occurrence of nonuniform grain structures (and so-called ALA, or "as large as," grains) in cast, wrought, and powder-metallurgy superalloys is also discussed. A physics-based model to treat the topology of recrystallization and the evolution of ALA grains in such materials is proposed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering Materials & Technology is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MANUFACTURING industries -- Defects KW - TITANIUM alloys KW - CAVITATION KW - RECRYSTALLIZATION (Metallurgy) KW - SPHEROIDAL state KW - OSTWALD ripening KW - METALS -- Thermomechanical treatment KW - MICROSTRUCTURE KW - AEROSPACE engineering KW - cavitation KW - coarsening KW - defects KW - recrystallization KW - spheroidization N1 - Accession Number: 32027540; Semiatin, S. L. 1 Nicolaou, P. D. 2 Thomas, J. P. 3 Turner, T. J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright-Patterson AFB, OH 45433-7817 2: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432 3: Universal Technology Corp., 1270 North Fairfield Road, Dayton, OH 45432; Source Info: Apr2008, Vol. 130 Issue 2, p10011; Subject Term: MANUFACTURING industries -- Defects; Subject Term: TITANIUM alloys; Subject Term: CAVITATION; Subject Term: RECRYSTALLIZATION (Metallurgy); Subject Term: SPHEROIDAL state; Subject Term: OSTWALD ripening; Subject Term: METALS -- Thermomechanical treatment; Subject Term: MICROSTRUCTURE; Subject Term: AEROSPACE engineering; Author-Supplied Keyword: cavitation; Author-Supplied Keyword: coarsening; Author-Supplied Keyword: defects; Author-Supplied Keyword: recrystallization; Author-Supplied Keyword: spheroidization; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 8p; Illustrations: 4 Black and White Photographs, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1115/1.2840958 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32027540&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gray, R. AU - Geri, G. A. AU - Akhtar, S. C. AU - Covas, C. M. T1 - The Role of Visual Occlusion in Altitude Maintenance During Simulated Flight. JO - Journal of Experimental Psychology. Human Perception & Performance JF - Journal of Experimental Psychology. Human Perception & Performance Y1 - 2008/04// VL - 34 IS - 2 M3 - Article SP - 475 EP - 488 SN - 00961523 AB - The use of visual occlusion as a cue to altitude maintenance in low-altitude flight (LAF) was investigated. The extent to which the ground surface is occluded by 3-D objects varies with altitude and depends on the height, radius, and density of the objects. Participants attempted to maintain a constant altitude during simulated flight over an undulating terrain with trees of various heights, radii, and densities. As would be predicted if participants used occlusion, root-mean-square error was related to the product of tree height and tree density (Experiment 1) and to the product of tree radius and tree density (Experiment 2). This relationship was also found for simulated terrains with a more realistic mixture of tree heights (Experiment 4). The authors present a modification to an occlusion model (T. Leung & J. Malik, 1997) that can be used to approximate occlusion in the context of LAF, and they evaluate the modified model using the present LAF data. On a practical level, simulating 3-D objects is computationally expensive. The present results suggest that performance may be maintained with fewer objects if their size is increased. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Experimental Psychology. Human Perception & Performance is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PSYCHOLOGY KW - AERONAUTICS KW - FLIGHT KW - PERCEPTION KW - ALTITUDES KW - aviation KW - perception and action KW - simulation KW - visual occlusion N1 - Accession Number: 74756356; Gray, R. 1,2; Email Address: robgray@asu.edu Geri, G. A. 2 Akhtar, S. C. 3 Covas, C. M. 1,4; Affiliation: 1: Arizona State University and Link Simulation and Training 2: Link Simulation and Training 3: The Boeing Co. 4: Air Force Research Laboratory; Source Info: Apr2008, Vol. 34 Issue 2, p475; Subject Term: PSYCHOLOGY; Subject Term: AERONAUTICS; Subject Term: FLIGHT; Subject Term: PERCEPTION; Subject Term: ALTITUDES; Author-Supplied Keyword: aviation; Author-Supplied Keyword: perception and action; Author-Supplied Keyword: simulation; Author-Supplied Keyword: visual occlusion; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; Number of Pages: 14p; Illustrations: 5 Diagrams, 8 Graphs; Document Type: Article L3 - 10.1037/0096-1523.34.2.475 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=74756356&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McDougall, Jane AU - Schaubroeck, Lisbeth T1 - Minimal surfaces over stars JO - Journal of Mathematical Analysis & Applications JF - Journal of Mathematical Analysis & Applications Y1 - 2008/04// VL - 340 IS - 1 M3 - Article SP - 721 EP - 738 SN - 0022247X AB - Abstract: A JS surface is a minimal graph over a polygonal domain that becomes infinite in magnitude at the domain boundary. Jenkins and Serrin characterized the existence of these minimal graphs in terms of the signs of the boundary values and the side-lengths of the polygon. For a convex polygon, there can be essentially only one JS surface, but a non-convex domain may admit several distinct JS surfaces. We consider two families of JS surfaces corresponding to different boundary values, namely and , over domains in the form of regular stars. We give parameterizations for these surfaces as lifts of harmonic maps, and observe that all previously constructed JS surfaces have been of type . We give an example of a surface that is a new complete embedded minimal surface generalizing Scherk''s doubly periodic surface, and show also that the surface over a regular convex 2n-gon is the limit of surfaces over non-convex stars. Finally we consider the construction of other JS surfaces over stars that belong neither to nor to . [Copyright &y& Elsevier] AB - Copyright of Journal of Mathematical Analysis & Applications is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAXIMA & minima KW - CALCULUS of variations KW - MAPPINGS (Mathematics) KW - POINT set theory KW - Dilatation KW - Harmonic mappings KW - Minimal surface N1 - Accession Number: 28136344; McDougall, Jane 1; Email Address: JMcDougall@ColoradoCollege.edu Schaubroeck, Lisbeth 2; Email Address: Beth.Schaubroeck@usafa.edu; Affiliation: 1: Department of Mathematics and Computer Science, Colorado College, Colorado Springs, CO 80903, USA 2: Department of Mathematical Sciences, US Air Force Academy, CO 80840, USA; Source Info: Apr2008, Vol. 340 Issue 1, p721; Subject Term: MAXIMA & minima; Subject Term: CALCULUS of variations; Subject Term: MAPPINGS (Mathematics); Subject Term: POINT set theory; Author-Supplied Keyword: Dilatation; Author-Supplied Keyword: Harmonic mappings; Author-Supplied Keyword: Minimal surface; Number of Pages: 18p; Document Type: Article L3 - 10.1016/j.jmaa.2007.07.085 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28136344&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Noel, Julien G. AU - Bogozi, Albert AU - Vlasov, Yuriy A. AU - Larkins Jr, Grover L. T1 - Cryogenic Pull-Down Voltage of Microelectromechanical Switches. JO - Journal of Microelectromechanical Systems JF - Journal of Microelectromechanical Systems Y1 - 2008/04// VL - 17 IS - 2 M3 - Article SP - 351 EP - 355 SN - 10577157 AB - Capacitively shunted microelectromechanical (MEM) switches were designed, fabricated and tested in an earlier work. The switch is composed of a coplanar waveguide (CPW) structure with an Au bridge membrane suspended above a center conductor covered with a BaTiO3 dielectric. The membrane is actuated by electrostatic force acting between the center conductor of the CPW and the membrane when a voltage is applied. We have noted that pull-down voltages for MEM switches always demonstrate an extremely strong temperature dependence when actuated at cryogenic temperature. This paper improves the pull-down voltage prediction of MEM switches at cryogenic temperature using the mechanical properties of the bridge, thin film and substrate materials used in the switch. The theoretical and experimental results of the actuation voltages of these structures as a function of temperature are presented and compared. [2007-0235] [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microelectromechanical Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTROMECHANICAL systems KW - WAVEGUIDES KW - THIN films -- Mechanical properties KW - SOLID state electronics KW - SURFACE coatings KW - LOW temperature engineering KW - VOLTAGE regulators KW - Cryogenic temperature KW - microelectromechanical (MEM) devices KW - microwave switches KW - pull-down voltage KW - radio frequency (RF) devices N1 - Accession Number: 31800960; Noel, Julien G. 1; Email Address: fast@fiu.edu Bogozi, Albert 2 Vlasov, Yuriy A. 1 Larkins Jr, Grover L. 1; Affiliation: 1: Florida International University, Miami, FL 33174 USA 2: Air Force Research Laboratory, Wright—Patterson Air Force Base, Columbus, OH 45433 USA; Source Info: Apr2008, Vol. 17 Issue 2, p351; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: WAVEGUIDES; Subject Term: THIN films -- Mechanical properties; Subject Term: SOLID state electronics; Subject Term: SURFACE coatings; Subject Term: LOW temperature engineering; Subject Term: VOLTAGE regulators; Author-Supplied Keyword: Cryogenic temperature; Author-Supplied Keyword: microelectromechanical (MEM) devices; Author-Supplied Keyword: microwave switches; Author-Supplied Keyword: pull-down voltage; Author-Supplied Keyword: radio frequency (RF) devices; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; Number of Pages: 5p; Illustrations: 2 Diagrams, 2 Charts, 2 Graphs; Document Type: Article L3 - 10.1109/JMEMS.2008.918404 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31800960&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Corporan, Edwin AU - Quick, Adam AU - DeWitt, Matthew J. T1 - Characterization of Particulate Matter and Gaseous Emissions of a C-130H Aircraft. JO - Journal of the Air & Waste Management Association (Air & Waste Management Association) JF - Journal of the Air & Waste Management Association (Air & Waste Management Association) Y1 - 2008/04// VL - 58 IS - 4 M3 - Article SP - 474 EP - 483 PB - Air & Waste Management Association SN - 10962247 AB - The gaseous and nonvolatile particulate matter (PM) emissions of two T56-A-15 turboprop engines of a C-130H aircraft stationed at the 123rd Airlift Wing in the Kentucky Air National Guard were characterized. The emissions campaign supports the Strategic Environmental Research and Development Program (SERDP) project WP-1401 to determine emissions factors from military aircraft. The purpose of the project is to develop a comprehensive emissions measurement program using both conventional and advanced techniques to determine emissions factors of pollutants, and to investigate the spatial and temporal evolutions of the exhaust plumes from fixed and rotating wing military aircraft. Standard practices for the measurement of gaseous emissions from aircraft have been well established; however, there is no certified methodology for the measurement of aircraft PM emissions. In this study, several conventional instruments were used to physically characterize and quantify the PM emissions from the two turboprop engines. Emissions samples were extracted from the engine exit plane and transported to the analytical instrumentation via heated lines. Multiple sampling probes were used to assess the spatial variation and obtain a representative average of the engine emissions. Particle concentrations, size distributions, and mass emissions were measured using commercially available aerosol instruments. Engine smoke numbers were determined using established Society of Automotive Engineers (SAE) practices, and gaseous species were quantified via a Fourier-transform infraredbased gas analyzer. The engines were tested at five power settings, from idle to take-off power, to cover a wide range of operating conditions. Average corrected particle numbers (PNs) of (6.4 -14.3) x 107 particles per cm³ and PN emission indices (EI) from 3.5 x 1015 to 10.0 x 1015 particles per kg-fuel were observed. The highest PN EI were observed for the idle power conditions. The mean particle diameter varied between 50 nm at idle to 70 nm at maximum engine power. PM mass EI ranged from 1.6 to 3.5 g/kg-fuel for the conditions tested, which are in agreement with previous T56 engine measurements using other techniques. Additional PM data, smoke numbers, and gaseous emissions will be presented and discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Air & Waste Management Association (Air & Waste Management Association) is the property of Air & Waste Management Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICULATE matter KW - AIR pollution KW - AIRPLANES KW - POLLUTANTS KW - UNITED States. Air National Guard KW - UNITED States N1 - Accession Number: 31613879; Corporan, Edwin 1 Quick, Adam 1 DeWitt, Matthew J. 2; Affiliation: 1: U.S. Air Force Research Laboratory, Propulsion Directorate, Wright Patterson Air Force Base, OH 2: University of Dayton Research Institute, Dayton, OH; Source Info: Apr2008, Vol. 58 Issue 4, p474; Subject Term: PARTICULATE matter; Subject Term: AIR pollution; Subject Term: AIRPLANES; Subject Term: POLLUTANTS; Subject Term: UNITED States. Air National Guard; Subject Term: UNITED States; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 10p; Illustrations: 6 Black and White Photographs, 3 Charts, 6 Graphs; Document Type: Article L3 - 10.3155/1047-3289.58.4.474 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31613879&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Toner, Christopher T1 - SORTS OF NATURALISM: REQUIREMENTS FOR A SUCCESSFUL THEORY. JO - Metaphilosophy JF - Metaphilosophy Y1 - 2008/04// VL - 39 IS - 2 M3 - Article SP - 220 EP - 250 PB - Wiley-Blackwell SN - 00261068 AB - In this article I investigate several “sorts of naturalism” that have been advanced in recent years as possible foundations for virtue ethics: those of Michael Thompson, Philippa Foot, Rosalind Hursthouse, John McDowell, and Larry Arnhart. Each of these impressive attempts fails in illuminatingly different ways, and in the opening sections I analyze what has gone variously wrong. I next use this analysis to articulate four criteria that any successful Aristotelian naturalism must meet (my goal is to show what naturalism must deliver, not yet to show that it can deliver it). I then look at Alasdair MacIntyre's approach, which begins with our natural trajectory from complete dependency toward becoming independent practical reasoners; I argue that this sort of naturalism meets the aforementioned criteria and thus provides a good example of what Aristotelian naturalists must do. I close with a consideration of two important objections to any broadly MacIntyrean sort of naturalism. [ABSTRACT FROM AUTHOR] AB - Copyright of Metaphilosophy is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NATURALISM KW - ETHICS KW - PHILOSOPHY of science KW - REALISM KW - Foot KW - Hursthouse KW - MacIntyre KW - McDowell KW - naturalism KW - virtue ethics KW - HURSTHOUSE, Rosalind KW - ARNHART, Larry KW - THOMPSON, Michael KW - MACINTYRE, Alasdair C. (Alasdair Chalmers), 1929- N1 - Accession Number: 31129457; Toner, Christopher 1; Email Address: christopher.toner@usafa.edu; Affiliation: 1: Department of Philosophy, United States Air Force Academy, USAFA, CO 80840, USA; Source Info: Apr2008, Vol. 39 Issue 2, p220; Subject Term: NATURALISM; Subject Term: ETHICS; Subject Term: PHILOSOPHY of science; Subject Term: REALISM; Author-Supplied Keyword: Foot; Author-Supplied Keyword: Hursthouse; Author-Supplied Keyword: MacIntyre; Author-Supplied Keyword: McDowell; Author-Supplied Keyword: naturalism; Author-Supplied Keyword: virtue ethics; People: HURSTHOUSE, Rosalind; People: ARNHART, Larry; People: THOMPSON, Michael; People: MACINTYRE, Alasdair C. (Alasdair Chalmers), 1929-; Number of Pages: 31p; Document Type: Article L3 - 10.1111/j.1467-9973.2008.00538.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31129457&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ahuja, Sunil K. AU - Kulkarni, Hemant AU - Catano, Gabriel AU - Agan, Brian K. AU - Camargo, Jose F. AU - Weijing He AU - O'Connell, Robert J. AU - Marconi, Vincent C. AU - Delmar, Judith AU - Eron, Joseph AU - Clark, Robert A. AU - Frost, Simon AU - Martin, Jeffrey AU - Ahuja, Seema S. AU - Deeks, Steven G. AU - Little, Susan AU - Richman, Douglas AU - Hecht, Frederick M. AU - Dolan, Matthew J. T1 - CCL3L1-CCR5 genotype influences durability of immune recovery during antiretroviral therapy of HIV-1–infected individuals. JO - Nature Medicine JF - Nature Medicine Y1 - 2008/04// VL - 14 IS - 4 M3 - Article SP - 413 EP - 420 PB - Nature Publishing Group SN - 10788956 AB - The basis for the extensive variability seen in the reconstitution of CD4+ T cell counts in HIV-infected individuals receiving highly active antiretroviral therapy (HAART) is not fully known. Here, we show that variations in CCL3L1 gene dose and CCR5 genotype, but not major histocompatibility complex HLA alleles, influence immune reconstitution, especially when HAART is initiated at <350 CD4+ T cells/mm3. The CCL3L1-CCR5 genotypes favoring CD4+ T cell recovery are similar to those that blunted CD4+ T cell depletion during the time before HAART became available (pre-HAART era), suggesting that a common CCL3L1-CCR5 genetic pathway regulates the balance between pathogenic and reparative processes from early in the disease course. Hence, CCL3L1-CCR5 variations influence HIV pathogenesis even in the presence of HAART and, therefore, may prospectively identify subjects in whom earlier initiation of therapy is more likely to mitigate immunologic failure despite viral suppression by HAART. Furthermore, as reconstitution of CD4+ cells during HAART is more sensitive to CCL3L1 dose than to CCR5 genotypes, CCL3L1 analogs might be efficacious in supporting immunological reconstitution. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature Medicine is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTIRETROVIRAL agents KW - HIV-positive persons KW - T cells KW - THERAPEUTICS KW - ANTIVIRAL agents N1 - Accession Number: 31546568; Ahuja, Sunil K. 1,2,3; Email Address: ahujas@uthscsa.edu Kulkarni, Hemant 1,2 Catano, Gabriel 1,2 Agan, Brian K. 4,5,6,7 Camargo, Jose F. 1,2 Weijing He 1,2 O'Connell, Robert J. 4,5 Marconi, Vincent C. 4,5,7 Delmar, Judith 4,5,7 Eron, Joseph 8 Clark, Robert A. 1,2 Frost, Simon 9,10 Martin, Jeffrey 11 Ahuja, Seema S. 1,2 Deeks, Steven G. 12 Little, Susan 9 Richman, Douglas 9,10 Hecht, Frederick M. 12 Dolan, Matthew J. 4,5,6,7; Email Address: mdolan@hjf.org; Affiliation: 1: Veterans Administration Research Center for AIDS and HIV-1 Infection, South Texas Veterans Health Care System, 7400 Merton Minter, San Antonio, Texas 78229, USA 2: Department of Medicine, University of Texas Health Science Center 3: Departments of Microbiology and Immunology and Biochemistry, University of Texas Health Science Center, 7703 Floyd Curl Drive, San Antonio, Texas 78229, USA 4: Infectious Disease Clinical Research Program, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, Maryland 20814, USA 5: Infectious Diseases Service, Wilford Hall United States Air Force Medical Center 6: Henry M. Jackson Foundation, Wilford Hall United States Air Force Medical Center, 2200 Bergquist Drive, Lackland Air Force Base, Texas 78236, USA 7: San Antonio Military Medical Center, 3851 Roger Brooke Drive, Fort Sam Houston, Texas 78234, USA 8: University of North Carolina, 4030 Bondurant Hall, Chapel Hill, North Carolina 27599, USA 9: Antiviral Research Center, Department of Medicine, University of California, 150 West Washington Street, San Diego, California 92103, USA 10: Veterans Affairs San Diego Healthcare System, 3350 La Jolla Village Drive, San Diego, California 92161, USA 11: Department of Epidemiology and Biostatistics, University of California, 185 Berry Street, San Francisco, California 94107, USA 12: Department of Medicine, San Francisco General Hospital, University of California San Francisco, 995 Potrero Avenue, San Francisco, California 94110, USA; Source Info: Apr2008, Vol. 14 Issue 4, p413; Subject Term: ANTIRETROVIRAL agents; Subject Term: HIV-positive persons; Subject Term: T cells; Subject Term: THERAPEUTICS; Subject Term: ANTIVIRAL agents; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; Number of Pages: 8p; Illustrations: 3 Charts, 3 Graphs; Document Type: Article L3 - 10.1038/nm1741 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31546568&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hatzfeld, Jennifer J. T1 - Developing Evidence-Based Nursing Roles: Lessons Learned From the Health Care Integrator Role. JO - Nursing Forum JF - Nursing Forum Y1 - 2008/04//Apr-Jun2008 VL - 43 IS - 2 M3 - Article SP - 72 EP - 79 PB - Wiley-Blackwell SN - 00296473 AB - TOPIC. Developing evidence-based nursing roles. PURPOSE. This study examined a unique nursing role in the United States Air Force to determine if it had been well institutionalized and to identify barriers and facilitators during the implementation process. SOURCE OF INFORMATION. Individuals functioning in the role were surveyed to measure time spent on specific job-related tasks, additional duties, and positive and negative experiences. CONCLUSIONS. Eighty-seven percent of the respondents (n =  45) indicated that the role had been well implemented, although wide variation existed in tasks performed and major organizational barriers identified. Findings of this study can be used to guide the development of other evidence-based positions. [ABSTRACT FROM AUTHOR] AB - Copyright of Nursing Forum is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EVIDENCE-based nursing KW - NURSING KW - ROLES (Social aspects) KW - TASKS KW - UNITED States KW - Evidence-based nursing KW - implementation KW - nursing role KW - UNITED States. Air Force N1 - Accession Number: 31790982; Hatzfeld, Jennifer J. 1,2; Affiliation: 1: Nurse, United States Air Force 2: Johns Hopkins University; Source Info: Apr-Jun2008, Vol. 43 Issue 2, p72; Subject Term: EVIDENCE-based nursing; Subject Term: NURSING; Subject Term: ROLES (Social aspects); Subject Term: TASKS; Subject Term: UNITED States; Author-Supplied Keyword: Evidence-based nursing; Author-Supplied Keyword: implementation; Author-Supplied Keyword: nursing role; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 8p; Illustrations: 1 Chart, 1 Graph; Document Type: Article L3 - 10.1111/j.1744-6198.2008.00098.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31790982&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Basu, B. T1 - Low frequency electrostatic waves in weakly inhomogeneous magnetoplasma modeled by Lorentzian (kappa) distributions. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2008/04// VL - 15 IS - 4 M3 - Article SP - 042108 PB - American Institute of Physics SN - 1070664X AB - Linear dispersion relations for electrostatic waves in spatially inhomogeneous, current-carrying anisotropic plasma, where the equilibrium particle velocity distributions are modeled by various Lorentzian (kappa) distributions and by well-known bi-Maxwellian distribution, are presented. Spatial inhomogeneities, assumed to be weak, include density gradients, temperature gradients, and gradients (shear) in the parallel (to the ambient magnetic field) flow velocities associated with the current. In order to illustrate the distinguishing features of the kappa distributions, stability properties of the low frequency (lower than ion cyclotron frequency) and long perpendicular wavelength (longer than ion gyroradius) modes are studied in detail, and the results are contrasted with those for the bi-Maxwellian distribution. Specific attention is given to the drift waves, the current-driven ion-acoustic waves in the presence of velocity shear, the velocity shear-driven ion-acoustic modes, and the ion temperature-gradient driven modes. Growth rates of the drift wave instability and the current-driven ion-acoustic instability are reduced from their values for bi-Maxwellian distribution due to larger ion Landau damping rates associated with the kappa distributions. For the same reason, excitation conditions for these two instabilities are more stringent in the case of the kappa distributions. Growth rates of the velocity shear-driven ion-acoustic instability and the ion temperature-gradient driven instability are reduced from their values for bi-Maxwellian distribution as a consequence of the reduced adiabatic response of the electrons to the electrostatic potential perturbation. Frequencies of the drift waves and the ion-acoustic waves are also reduced in kappa-distribution plasmas due to the reduced adiabatic response of the electrons. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA (Ionized gases) KW - IONIZED gases KW - SPEED of light KW - PARTICLES (Nuclear physics) KW - ELECTRONS N1 - Accession Number: 31881443; Basu, B. 1; Affiliation: 1: Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731, USA.; Source Info: Apr2008, Vol. 15 Issue 4, p042108; Subject Term: PLASMA (Ionized gases); Subject Term: IONIZED gases; Subject Term: SPEED of light; Subject Term: PARTICLES (Nuclear physics); Subject Term: ELECTRONS; Number of Pages: 17p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.2906217 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31881443&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Burtt, Kelly D. AU - Sharma, Ramesh D. T1 - Near-resonant energy transfer from highly vibrationally excited OH to N2. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2008/03/28/ VL - 128 IS - 12 M3 - Article SP - 124311 PB - American Institute of Physics SN - 00219606 AB - The probability per collision P(T) of near-resonant vibration-to-vibration energy transfer (ET) of one quantum of vibrational energy from vibrational levels ν=8 and ν=9 of OH to N2(ν=0), OH(ν)+N2(0)→OH(ν-1)+N2(1), is calculated in the 100–350 K temperature range. These processes represent important steps in a model that explains the enhanced 4.3 μm emission from CO2 in the nocturnal mesosphere. The calculated energy transfer is mediated by weak long-range dipole-quadrupole interaction. The results of this calculation are very sensitive to the strength of the two transition moments. Because of the long range of the intermolecular potential, the resonance function, a measure of energy that can be efficiently exchanged between translation and vibration-rotation degrees of freedom, is rather narrow. A narrow resonance function coupled with the large rotational constant of OH is shown to render the results of the calculation very sensitive to the rotational distribution, or the rotational temperature if one exists, of this molecule. The calculations are carried out in the first and second orders of perturbation theory with the latter shown to give ET probabilities that are an order of magnitude larger than the former. The reasons for the difference in magnitude and temperature dependence of the first- and second-order calculations are discussed. The results of the calculations are compared with room temperature measurements as well as with an earlier calculation. Our calculated results are in good agreement with the room temperature measurements for the transfer of vibrational energy for the exothermic OH(ν=9) ET process but are about an order lower than the room temperature measurements for the exothermic OH(ν=8) ET process. The cause of this discrepancy is explored. This calculation does not give the large values of the rate coefficients needed by the model that explains the enhanced 4.3 μm emission from CO2 in the nocturnal mesosphere. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENERGY transfer KW - ENERGY storage KW - MESOSPHERE KW - VIBRATIONAL spectra KW - RESONANT vibration KW - PHYSICAL measurements N1 - Accession Number: 31520981; Burtt, Kelly D. 1 Sharma, Ramesh D. 1; Email Address: ramesh.sharma@hanscom.af.mil; Affiliation: 1: Space Vehicles Directorate (RVBXT), Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731-3010, USA; Source Info: 3/28/2008, Vol. 128 Issue 12, p124311; Subject Term: ENERGY transfer; Subject Term: ENERGY storage; Subject Term: MESOSPHERE; Subject Term: VIBRATIONAL spectra; Subject Term: RESONANT vibration; Subject Term: PHYSICAL measurements; Number of Pages: 8p; Illustrations: 7 Graphs; Document Type: Article L3 - 10.1063/1.2884343 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31520981&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, Oleg N. AU - Miracle, Daniel B. T1 - Correlation between thermodynamic and kinetic fragilities in nonpolymeric glass-forming liquids. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2008/03/28/ VL - 128 IS - 12 M3 - Article SP - 124508 PB - American Institute of Physics SN - 00219606 AB - A phenomenological relationship between reduced excess heat capacity of supercooled liquid ΔCpexc(Tg)/ΔSm at the glass transition temperature Tg, fragility index m, and reduced glass transition temperature Trg=Tg/Tm, where Tm is the melting (liquidus) temperature, was derived for fragile nonpolymeric glass-forming liquids under the assumptions that the fragile behavior of these liquids is described by the Vogel–Fulcher–Tammann (VFT) equation; the excess heat capacity of liquid is inversely proportional to the absolute temperature and the VFT temperature T0 is equal to the Kauzmann temperature TK. It was found that ΔCpexc(Tg)/ΔSm is a composite function of m and Trg, which indicates that the empirical correlation ΔCpexc(Tg)/ΔSm=0.025m recently identified by Wang et al. [J. Chem Phys. 125, 074505 (2006)] is probably valid only for liquids which have nearly the same values of Trg. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GLASS transition temperature KW - PHASE transformations (Physics) KW - HYDROSTATICS KW - FLUID mechanics KW - HYDRODYNAMICS KW - POLYWATER N1 - Accession Number: 31521010; Senkov, Oleg N. 1; Email Address: oleg.senkov@wpafb.af.mil Miracle, Daniel B. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, 2230 Tenth Street, Wright-Patterson AFB, Ohio 45433-7817, USA; Source Info: 3/28/2008, Vol. 128 Issue 12, p124508; Subject Term: GLASS transition temperature; Subject Term: PHASE transformations (Physics); Subject Term: HYDROSTATICS; Subject Term: FLUID mechanics; Subject Term: HYDRODYNAMICS; Subject Term: POLYWATER; Number of Pages: 3p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.2890726 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31521010&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, Sung Jin AU - Chodavarapu, Vamsy P. AU - Cartwright, Alexander N. AU - Swihart, Mark T. AU - Bunning, Timothy J. T1 - Enhanced oxygen detection using porous polymeric gratings with integrated recognition elements JO - Sensors & Actuators B: Chemical JF - Sensors & Actuators B: Chemical Y1 - 2008/03/28/ VL - 130 IS - 2 M3 - Article SP - 758 EP - 764 SN - 09254005 AB - Abstract: The development of ordered porous nanostructured materials, such as polymeric Bragg gratings, offers an attractive platform for the encapsulation of chemical and biological recognition elements. To date, various types of polymer gratings have been developed with several demonstrated applications in switching, lasing, and display devices. Here, we focus on a new class of holographically ordered porous polymer (HOPP) gratings that are an extension of holographic polymer dispersed liquid crystal (H-PDLC) structures. We present biochemical sensing using HOPP gratings that include a volatile solvent as the phase separation fluid. The resulting HOPP gratings are simple to fabricate, chromatically tunable, highly versatile, and can be employed as a general template for the encapsulation of recognition elements. As a prototype, we developed an oxygen (O2) sensor by encapsulating the fluorophore (tris(4,7-diphenyl-1,10-phenathroline)ruthenium(II) within these nanostructured materials. The resulting O2 sensors performed across the full-scale range (0–100%) of oxygen in nitrogen, with a response time of less than 1s. The O2 sensor system uses a LED excitation source and a silicon photodiode detector. The ability of these HOPP reflection gratings to transmit or reflect a particular wavelength range, based on the grating spacing, enables us to selectively enhance the detection efficiency for the wavelengths of interest. [Copyright &y& Elsevier] AB - Copyright of Sensors & Actuators B: Chemical is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURES KW - BRAGG gratings KW - POLYMERS KW - BIOSENSORS KW - Biochemical sensors KW - Biosensors KW - Fluorometry KW - HPDLC gratings KW - Nanostructured sensors KW - Optical sensors KW - Oxygen sensors KW - Porous structures KW - Reflection gratings N1 - Accession Number: 31400536; Kim, Sung Jin 1 Chodavarapu, Vamsy P. 2 Cartwright, Alexander N. 1; Email Address: anc@buffalo.edu Swihart, Mark T. 3 Bunning, Timothy J. 4; Affiliation: 1: Department of Electrical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, United States 2: Department of Electrical and Computer Engineering, McGill University, Montreal, QC H3A 2A7, United States 3: Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, United States 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, United States; Source Info: Mar2008, Vol. 130 Issue 2, p758; Subject Term: NANOSTRUCTURES; Subject Term: BRAGG gratings; Subject Term: POLYMERS; Subject Term: BIOSENSORS; Author-Supplied Keyword: Biochemical sensors; Author-Supplied Keyword: Biosensors; Author-Supplied Keyword: Fluorometry; Author-Supplied Keyword: HPDLC gratings; Author-Supplied Keyword: Nanostructured sensors; Author-Supplied Keyword: Optical sensors; Author-Supplied Keyword: Oxygen sensors; Author-Supplied Keyword: Porous structures; Author-Supplied Keyword: Reflection gratings; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.snb.2007.10.073 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31400536&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lawrence F. Drummy AU - Y. C. Wang AU - Remco Schoenmakers AU - Keith May AU - Mike Jackson AU - Hilmar Koerner AU - B. L. Farmer AU - Benji Mauryama AU - Richard A. Vaia T1 - Morphology of Layered Silicate− (NanoClay−) Polymer Nanocomposites by Electron Tomography and Small-Angle X-ray Scattering. JO - Macromolecules JF - Macromolecules Y1 - 2008/03/25/ VL - 41 IS - 6 M3 - Article SP - 2135 EP - 2143 SN - 00249297 AB - A basis for quantitative analysis of layered silicate− (nanoclay−) polymer nanocomposite morphology using two characterization methods, electron tomography and small-angle X-ray scattering (SAXS), is provided. For tilt greater than 15°, the contrast of a single montmorillonite layer experimentally decreases below the detectable limit of high-angle annular dark-field scanning transmission electron microscopy (HAADF−STEM). Calculations based on Z-contrast imaging of a 1 nm thick aluminosilicate layer predict this tilt angle (15°) should produce 17% contrast, consistent with a reasonable limit of HAADF−STEM detection for this system. This result implies that segmentation or thresholding of 2-dimensional Z-contrast projection images of randomly oriented, highly anisotropic nanoparticles, such as layered silicates in polymer nanocomposites, will be extremely inaccurate. For example, nearly 75% of the volume of montmorillonite layers in an epoxy matrix will not be identified in the segmentation, owing to their orientation alone. Using electron tomography, this number is reduced to below 15% and tomographic reconstruction reveals three-dimensional information. The corresponding 3D fast Fourier transformation (FFT) indicates that the image volume (10-1m3) does not contain sufficient distribution of local environments (interlayer correlation length ∼ 16.1 nm) to directly correspond to the global average as revealed by SAXS (scattering volume, 107m3; interlayer correlation length ∼ 12.3 nm). Nevertheless, in contrast to SAXS, the tomographic reconstruction provides precise details of the distribution of morphological features, in addition to statistical averages over the sample volume. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLES (Nuclear physics) KW - NUCLEAR physics KW - X-ray scattering KW - TOMOGRAPHY N1 - Accession Number: 32792711; Lawrence F. Drummy 1 Y. C. Wang 1 Remco Schoenmakers 1 Keith May 1 Mike Jackson 1 Hilmar Koerner 1 B. L. Farmer 1 Benji Mauryama 1 Richard A. Vaia 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, AFRL/RXBP, 2941 HobsonWay, Wright-Patterson AFB, Ohio 45433, UES Inc., Dayton, Ohio 45432, FEI Company, Hillsboro,Oregon 97124, Triune Software, Beavercreek, Ohio 45431, Innovative Management and TechnologyServices, Fairmount, West Virginia 26554, and Universal Technology Corporation, Dayton, Ohio 45432; Source Info: Mar2008, Vol. 41 Issue 6, p2135; Subject Term: PARTICLES (Nuclear physics); Subject Term: NUCLEAR physics; Subject Term: X-ray scattering; Subject Term: TOMOGRAPHY; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32792711&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adams, A.G. AU - Rahaman, M.N. AU - Dutton, R.E. T1 - Microstructure of dense thin sheets of γ-TiAl fabricated by hot isostatic pressing of tape-cast monotapes JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2008/03/25/ VL - 477 IS - 1/2 M3 - Article SP - 137 EP - 144 SN - 09215093 AB - Abstract: A powder metallurgy route based on hot isostatic pressing (HIP) of tape-cast monotapes was used for the direct fabrication of dense thin sheets (250–300μm thick) of gamma titanium aluminide (γ-TiAl). Polarized light microscopy revealed a fine-grained microstructure (average grain size ∼3μm) but a few isolated larger grains (∼20μm) were also present. The primarily metastable α2 microstructure of the rapidly solidified starting powder transformed to the equilibrium near-γ microstructure during HIP at 1100°C. Chemical analysis revealed that the dense sheet had a carbon content of 0.13wt.%, which was only 0.04wt.% higher than that of the starting powder, but the oxygen content was significantly higher, presumably introduced during the decanning step. The hardness measured using Vickers microindentation technique was 384±9HV. Manipulation of the as-HIPed microstructure was performed by heating for up to 1h in flowing argon at temperatures (1170–1385°C) below and above the alpha transus (1355°C). Below 1250°C, limited grain growth and no discernable change in the as-HIPed (near-γ) microstructure occurred. Sheets heated to 1320°C and 1365°C had a duplex microstructure of γ and α2 grains, with some lamellar grains. Except for a thin surface layer (20–30μm thick), the microstructure of the heat-treated sheet was uniform, but a fully lamellar microstructure was not achieved even after heating for 1h at 1385°C. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - TITANIUM compounds KW - ISOSTATIC pressing KW - POWDER metallurgy KW - Gamma titanium aluminide KW - Hot isostatic pressing KW - Tape-casting KW - Thin sheet N1 - Accession Number: 30019032; Adams, A.G. 1 Rahaman, M.N. 1; Email Address: rahaman@umr.edu Dutton, R.E. 2; Affiliation: 1: University of Missouri-Rolla, Department of Materials Science and Engineering, 223 McNutt Hall, Rolla, MO 65409, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Mar2008, Vol. 477 Issue 1/2, p137; Subject Term: THIN films; Subject Term: TITANIUM compounds; Subject Term: ISOSTATIC pressing; Subject Term: POWDER metallurgy; Author-Supplied Keyword: Gamma titanium aluminide; Author-Supplied Keyword: Hot isostatic pressing; Author-Supplied Keyword: Tape-casting; Author-Supplied Keyword: Thin sheet; NAICS/Industry Codes: 332117 Powder Metallurgy Part Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.msea.2007.05.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30019032&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yalin Lu AU - Gao, Chen T1 - Optical limiting in lead magnesium niobate–lead titanate multilayers. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/03/24/ VL - 92 IS - 12 M3 - Article SP - 121109 PB - American Institute of Physics SN - 00036951 AB - Optical limiting in highly oriented lead magnesium niobate–lead titanate multilayers has been investigated at both 1.064 and 0.532 μm wavelengths. Limiting thresholds for three such multilayers having periods of 20, 106, and 218 nm, respectively, were determined at the level ∼220 μJ/pulse for 1.064 μm and ∼150 μJ/pulse for 0.532 μm. Nonlinear optical scattering from domain walls was used to explain the observed limiting behavior. Possible formation of nonlinear refraction grating was also discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEAD compounds KW - TITANATES KW - LIGHT -- Scattering KW - REFRACTION (Optics) KW - DIFFRACTION gratings N1 - Accession Number: 31554116; Yalin Lu 1; Email Address: yalin.lu@usafa.edu Gao, Chen 2; Affiliation: 1: Laser and Optics Research Center, US Air Force Academy, Colorado 80840, USA and College of Physical Science and Technology, Yangzhou University, Yangzhou 225009, People's Republic of China 2: National Synchrotron Radiation Laboratory and Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230029, People's Republic of China; Source Info: 3/24/2008, Vol. 92 Issue 12, p121109; Subject Term: LEAD compounds; Subject Term: TITANATES; Subject Term: LIGHT -- Scattering; Subject Term: REFRACTION (Optics); Subject Term: DIFFRACTION gratings; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.2902318 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31554116&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Look, D. C. AU - Claflin, B. AU - Smith, H. E. T1 - Origin of conductive surface layer in annealed ZnO. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/03/24/ VL - 92 IS - 12 M3 - Article SP - 122108 PB - American Institute of Physics SN - 00036951 AB - The highly conductive surface layers found in nearly all as-grown or annealed bulk ZnO wafers are studied by temperature-dependent Hall-effect and secondary-ion mass spectroscopy (SIMS) measurements. In this work, we have used annealing in N2 at 900 °C, and forming gas (5% H2 in N2) at 600 °C, to cause a large enough surface conduction that SIMS measurements can be reliably employed. The increased near-surface donor density, as determined from two-layer Hall-effect modeling, is consistent with an increased near-surface concentration of Al, Ga, and In atoms, resulting from diffusion. There is no evidence for participation of any donors involving H. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR wafers KW - ZINC oxide KW - HALL effect KW - SECONDARY ion mass spectrometry KW - ANNEALING of metals KW - DIFFUSION N1 - Accession Number: 31554121; Look, D. C. 1,2; Email Address: david.look@wpafb.af.mil Claflin, B. 1,3 Smith, H. E. 2,3; Affiliation: 1: Semiconductor Research Center, Wright State University, Dayton, Ohio 45435, USA 2: University of Dayton Research Institute, University of Dayton, Dayton, Ohio 45469, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: 3/24/2008, Vol. 92 Issue 12, p122108; Subject Term: SEMICONDUCTOR wafers; Subject Term: ZINC oxide; Subject Term: HALL effect; Subject Term: SECONDARY ion mass spectrometry; Subject Term: ANNEALING of metals; Subject Term: DIFFUSION; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 3p; Illustrations: 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.2903505 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31554121&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thokchom, J.S. AU - Xiao, H. AU - Rottmayer, M. AU - Reitz, T.L. AU - Kumar, B. T1 - Heterogeneous electrolyte (YSZ–Al2O3) based direct oxidation solid oxide fuel cell JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2008/03/15/ VL - 178 IS - 1 M3 - Article SP - 26 EP - 33 SN - 03787753 AB - Abstract: Bilayers comprised of dense and porous YSZ–Al2O3 (20wt%) composite were tape cast, processed, and then fabricated into working solid oxide fuel cells (SOFCs). The porous part of the bilayer was converted into anode for direct oxidation of fuels by infiltrating CeO2 and Cu. The cathode side of the bilayer was coated with an interlayer [YSZ–Al2O3 (20wt%)]: LSM (1:1) and LSM as cathode. Several button cells were evaluated under hydrogen/air and propane/air atmospheres in intermediate temperature range and their performance data were analyzed. For the first time the feasibility of using YSZ–Al2O3 material for fabricating working SOFCs with high open circuit voltage (OCV) and power density is demonstrated. AC impedance spectroscopy and scanning electron microscopy (SEM) techniques were used to characterize the membrane and cell. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLID oxide fuel cells KW - ELECTRIC batteries KW - DIRECT energy conversion KW - ALUMINUM oxide KW - Alumina KW - Composite KW - Ionic conductivity KW - Membrane KW - Microstructure KW - Power density KW - Tape cast KW - Yttria stabilized zirconia N1 - Accession Number: 29959999; Thokchom, J.S. 1 Xiao, H. 2 Rottmayer, M. 3 Reitz, T.L. 3 Kumar, B. 1; Email Address: kumarb@udri.udayton.edu; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469-0170, USA 2: Aerospace Power and Propulsion, UES Corp., Dayton, OH 45432-1894, USA 3: Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433-7251, USA; Source Info: Mar2008, Vol. 178 Issue 1, p26; Subject Term: SOLID oxide fuel cells; Subject Term: ELECTRIC batteries; Subject Term: DIRECT energy conversion; Subject Term: ALUMINUM oxide; Author-Supplied Keyword: Alumina; Author-Supplied Keyword: Composite; Author-Supplied Keyword: Ionic conductivity; Author-Supplied Keyword: Membrane; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Power density; Author-Supplied Keyword: Tape cast; Author-Supplied Keyword: Yttria stabilized zirconia; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 335910 Battery manufacturing; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 418990 All other merchant wholesalers; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jpowsour.2007.12.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=29959999&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Friedman, Jeffrey F. AU - Miller, Thomas M. AU - Friedman-Schaffer, Jessica K. AU - Viggiano, A. A. AU - Rekha, G. K. AU - Stevens, Amy E. T1 - Electron attachment to Ni(PF3)4 and Pt(PF3)4. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2008/03/14/ VL - 128 IS - 10 M3 - Article SP - 104303 PB - American Institute of Physics SN - 00219606 AB - An experimental study has been made of thermal electron attachment to the transition-metal trifluorophosphine complexes Ni(PF3)4 and Pt(PF3)4 using a flowing-afterglow Langmuir-probe apparatus. Both complexes are efficient at electron attachment, although the rate constants are somewhat less than collisional. The rate constant for electron attachment to Ni(PF3)4 is 1.9×10-7 cm3 s-1 at room temperature, about a factor of 2 less than collisional. The activation energy is 39±5 meV for the attachment reaction. The rate constant for electron attachment to Pt(PF3)4 is 5.4×10-8 cm3 s-1 at room temperature, and the activation energy is 84±8 meV. For both complexes, a PF3 ligand is lost on electron attachment, and only the M(PF3)3- ion is observed in the negative-ion mass spectrum. Density functional calculations were carried out on Ni(PF3)4 and various fragments in order to describe the thermochemistry of the attachment reaction. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - ELECTRONS KW - TRANSITION metals KW - PHOSPHINE KW - LANGMUIR probes KW - MASS spectrometry KW - DENSITY functionals KW - THERMOCHEMISTRY N1 - Accession Number: 31335081; Friedman, Jeffrey F. 1,2; Email Address: jeff@prtc.net Miller, Thomas M. 1,3 Friedman-Schaffer, Jessica K. 1,4 Viggiano, A. A. Rekha, G. K. 1,5 Stevens, Amy E. 1,5,6; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Bedford, Massachusetts 01731-3010, USA 2: Department of Physics, University of Puerto Rico, Mayaguez, Puerto Rico 00681-9016 3: Institute for Scientific Research, Boston College, Chestnut Hill, Massachusetts 4: University of New Mexico, Albuquerque, NM 87120 5: Department of Chemistry and Biochemistry, University of Oklahoma, 620 Parrington Oval, Room 208, Norman, Oklahoma 73019-3051, USA 6: Physical Sciences Inc., 20 New England Business Center, Andover, Massachusetts 01810-1077; Source Info: 3/14/2008, Vol. 128 Issue 10, p104303; Subject Term: RESEARCH; Subject Term: ELECTRONS; Subject Term: TRANSITION metals; Subject Term: PHOSPHINE; Subject Term: LANGMUIR probes; Subject Term: MASS spectrometry; Subject Term: DENSITY functionals; Subject Term: THERMOCHEMISTRY; Number of Pages: 6p; Illustrations: 5 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.2831391 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31335081&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jauchem, James R. T1 - Effects of low-level radio-frequency (3kHz to 300GHz) energy on human cardiovascular, reproductive, immune, and other systems: A review of the recent literature JO - International Journal of Hygiene & Environmental Health JF - International Journal of Hygiene & Environmental Health Y1 - 2008/03/12/ VL - 211 IS - 1/2 M3 - Article SP - 1 EP - 29 SN - 14384639 AB - Abstract: Objectives: Occupational or residential exposures to radio-frequency energy (RFE), including microwaves, have been alleged to result in health problems. A review of recent epidemiological studies and studies of humans as subjects in laboratory investigations would be useful. Methods: This paper is a narrative review of the recent medical and scientific literature (from mid-1998 through early 2006) dealing with possible effects of RFE on humans, relating to topics other than cancer, tumors, and central nervous system effects (areas covered in a previous review). Subject areas in this review include effects on cardiovascular, reproductive, and immune systems. Results: A large number of studies were related to exposures from cellular telephones. Although both positive and negative findings were reported in some studies, in a majority of instances no significant health effects were found. Most studies had some methodological limitations. Although some cardiovascular effects due to RFE were reported in epidemiological studies (e.g., lower 24-h heart rate, blunted circadian rhythm of heart rate), there were no major effects on a large number of cardiovascular parameters in laboratory studies of volunteers during exposure to cell-phone RFE. In population-based studies of a wide range of RFE frequencies, findings were equivocal for effects on birth defects, fertility, neuroblastoma in offspring, and reproductive hormones. Some changes in immunoglobulin levels and in peripheral blood lymphocytes were reported in different studies of radar and radio/television-transmission workers. Due to variations in results and difficulties in comparing presumably exposed subjects with controls, however, it is difficult to propose a unifying hypothesis of immune-system effects. Although subjective symptoms may be produced in some sensitive individuals exposed to RFE, there were no straightforward differences in such symptoms between exposed and control subjects in most epidemiological and laboratory studies. Consistent, strong associations were not found for RFE exposure and adverse health effects. The majority of changes relating to each of the diseases or conditions were small and not significant. Conclusions: On the basis of previous reviews of older literature and the current review of recent literature, there is only weak evidence for a relationship between RFE and any endpoint studied (related to the topics above), thus providing at present no sufficient foundation for establishing RFE as a health hazard. [Copyright &y& Elsevier] AB - Copyright of International Journal of Hygiene & Environmental Health is the property of Urban & Fischer Verlag and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC waves KW - NERVOUS system KW - ORGANS (Anatomy) KW - NEUROBLASTOMA KW - Electromagnetic fields KW - Microwaves KW - Non-ionising radiation KW - Radio-frequency energy KW - Radio-frequency radiation N1 - Accession Number: 30020780; Jauchem, James R. 1; Email Address: james.jauchem@brooks.af.mil; Affiliation: 1: Air Force Research Laboratory, Directed Energy Bioeffects Division, Radio Frequency Radiation Branch, 8262 Hawks Road, San Antonio, TX 78235-5147, USA; Source Info: Mar2008, Vol. 211 Issue 1/2, p1; Subject Term: ELECTROMAGNETIC waves; Subject Term: NERVOUS system; Subject Term: ORGANS (Anatomy); Subject Term: NEUROBLASTOMA; Author-Supplied Keyword: Electromagnetic fields; Author-Supplied Keyword: Microwaves; Author-Supplied Keyword: Non-ionising radiation; Author-Supplied Keyword: Radio-frequency energy; Author-Supplied Keyword: Radio-frequency radiation; Number of Pages: 29p; Document Type: Article L3 - 10.1016/j.ijheh.2007.05.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30020780&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Van Doren, Jane M. AU - Miller, Thomas M. AU - Viggiano, Albert A. AU - Sˇpaneˇl, Patrik AU - Smith, David AU - Bopp, Joseph C. AU - Troe, Jürgen T1 - Experimental and theoretical investigation of electron attachment to SF5Cl. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2008/03/07/ VL - 128 IS - 9 M3 - Article SP - 094309 PB - American Institute of Physics SN - 00219606 AB - Thermal electron attachment to SF5Cl has been studied with the flowing afterglow Langmuir probe technique. The rate coefficient is moderate, 4.8(±1.2)×10-8 cm3 s-1, and invariant with temperature over the temperature range of 300–550 K. The reaction is dissociative, forming mainly SF5-+Cl. Minor yields of Cl- and FCl- were also found. The yields of the minor channels increase slightly with temperature. Statistical unimolecular rate modeling is employed to elucidate the character of the dissociation pathways and to support the assumption that the dissociations involve the formation of metastable anionic SF5Cl-. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHLORINE compounds KW - THERMAL electrons KW - DISSOCIATION (Chemistry) KW - AFTERGLOW (Physics) KW - CHEMICAL reactions N1 - Accession Number: 31295374; Van Doren, Jane M. 1; Email Address: jvandoren@holycross.edu Miller, Thomas M. 2 Viggiano, Albert A. 2; Email Address: albert.viggiano@hanscom.af.mil Sˇpaneˇl, Patrik 3 Smith, David 4 Bopp, Joseph C. 5 Troe, Jürgen 6; Affiliation: 1: Department of Chemistry, College of the Holy Cross, Worcester, Massachusetts 01610-2395 2: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Bedford, Massachusetts 01731-3010 3: J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejskova 3, 182 23, Prague 8 4: Centre for Science and Technology in Medicine, School of Postgraduate Medicine, Keele University, Thornburrow Drive, Hartshill, Stoke-on-Trent ST4 7QB 5: Sterling Chemistry Laboratory, Yale University, P.O. Box 208107, New Haven, Connecticut 06520 6: Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen; Source Info: 3/7/2008, Vol. 128 Issue 9, p094309; Subject Term: CHLORINE compounds; Subject Term: THERMAL electrons; Subject Term: DISSOCIATION (Chemistry); Subject Term: AFTERGLOW (Physics); Subject Term: CHEMICAL reactions; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 8p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.2831767 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31295374&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Van Doren, Jane M. AU - Miller, Thomas M. AU - Viggiano, A. A. T1 - G3 and density functional theory investigations of the structures and energies of SFnCl (n=0–5) and their anions. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2008/03/07/ VL - 128 IS - 9 M3 - Article SP - 094310 PB - American Institute of Physics SN - 00219606 AB - Computations of structures and total energies have been carried out for neutral and anionic SFnCl (n=0–5), using the composite G3 method and density functional theory (DFT) at the B3LYP/6-311+G(3df) level. The total energies and zero-point energies have been used here to derive electron affinities, bond dissociation energies, and heats of formation. In addition, vibrational frequencies, polarizabilities, and dipole moments are reported. Results are compared with earlier work for SFm (m=1–6) and demonstrate how the relatively weak S–Cl bond and reduced symmetry influence the properties of these molecules and anions. Comparisons are also made between G3 and DFT results for SFnCl. Of particular interest is the alternating pattern of agreement between calculated electron affinity values with n. These calculations also provide critical energetic data needed to understand experimental measurements of electron attachment to SF5Cl [Van Doren et al., J. Chem. Phys. 128, 094309 (2008)] for which numerous ion products have been reported in the literature at low electron energy. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHLORINE compounds KW - DENSITY functionals KW - DIPOLE moments KW - POLARIZABILITY (Electricity) KW - MOLECULAR structure KW - ANIONS N1 - Accession Number: 31295373; Van Doren, Jane M. 1; Email Address: jvandoren@holycross.edu Miller, Thomas M. 2 Viggiano, A. A. 2; Affiliation: 1: Department of Chemistry, College of the Holy Cross, Worcester, Massachusetts 01610-2395 2: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Bedford, Massachusetts 01731-3010; Source Info: 3/7/2008, Vol. 128 Issue 9, p094310; Subject Term: CHLORINE compounds; Subject Term: DENSITY functionals; Subject Term: DIPOLE moments; Subject Term: POLARIZABILITY (Electricity); Subject Term: MOLECULAR structure; Subject Term: ANIONS; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 8p; Illustrations: 5 Diagrams, 6 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.2831770 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31295373&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jauchem, James R. AU - Cook, Michael C. AU - Beason, Charles W. T1 - Blood factors of Sus scrofa following a series of three TASER® electronic control device exposures JO - Forensic Science International JF - Forensic Science International Y1 - 2008/03/05/ VL - 175 IS - 2/3 M3 - Article SP - 166 EP - 170 SN - 03790738 AB - Abstract: In a previous study, 18 repeated exposures of anaesthetized swine to an electro-muscular incapacitating device (TASER International''s ADVANCED TASER® X26 electronic control device) resulted in acidosis and increases in blood electrolytes. In the current study, experiments were performed to investigate effects of a more typical scenario of repeated exposures of the device on muscle contraction and changes in blood factors. Ten swine were exposed for 5s, followed by a 5-s period of no exposure, three times. Selected blood factors were monitored for 3h following exposure. Transient increases in blood glucose, lactate, sodium, potassium, calcium, and pCO2 were consistent with previous reports in the literature dealing with studies of muscle stimulation or exercise. Blood pH was decreased immediately following exposure, but subsequently returned toward a normal level. Oxygen saturation (measured by pulse oximetry) was not changed significantly. In conclusion, three repeated TASER device exposures had only transient effects on blood factors, which all returned to pre-exposure levels, with the exception of hematocrit (which remained elevated after 3h). Since the increase in this factor was less than that which may occur after short periods of exercise, it is unlikely that this would be an indicator of any serious harm. [Copyright &y& Elsevier] AB - Copyright of Forensic Science International is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FORENSIC sciences KW - BLOOD KW - WILD boar KW - SUS KW - Acidosis KW - Blood KW - Electric injuries KW - Electronic weapons KW - TASER N1 - Accession Number: 29381708; Jauchem, James R. 1; Email Address: james.jauchem@brooks.af.mil Cook, Michael C. 1 Beason, Charles W. 2; Affiliation: 1: U.S. Air Force Research Laboratory, Human Effectiveness Directorate, Directed Energy Bioeffects Division, 8262 Hawks Road, San Antonio, TX 78235, USA 2: Advanced Information Engineering Services, A General Dynamics Company, 3276 Reliance Loop, San Antonio, TX 78235, USA; Source Info: Mar2008, Vol. 175 Issue 2/3, p166; Subject Term: FORENSIC sciences; Subject Term: BLOOD; Subject Term: WILD boar; Subject Term: SUS; Author-Supplied Keyword: Acidosis; Author-Supplied Keyword: Blood; Author-Supplied Keyword: Electric injuries; Author-Supplied Keyword: Electronic weapons; Author-Supplied Keyword: TASER; NAICS/Industry Codes: 112999 All other miscellaneous animal production; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.forsciint.2007.06.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=29381708&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hamilton, Howard H. AU - Kurdila, Andrew J. AU - Jammulamadaka, Anand K. T1 - Switched Dynamic Systems for Reduced-Order Flow Modeling. JO - AIAA Journal JF - AIAA Journal Y1 - 2008/03// VL - 46 IS - 3 M3 - Article SP - 664 EP - 672 SN - 00011452 AB - We develop a family of reduced-order models for the modeling and control of a flow system operating under varying fluid and actuation parameters. The parametric subspaces of the reduced-order models are formed by considering the angle between the reduced-order subspaces that span the velocity fields. This grouping is combined with a discrete switching law to form a switched dynamic system composed of a set of reduced-order models. This methodology is applied to the modeling of a lid-driven cavity under varying translation velocities and phase differentials between the upper and lower walls. It is shown that the subspace angle metric successfully partitions the parametric space and provides insight on the dominant parameters that characterize the flowfields. An open-loop simulation of the resulting switched dynamic system demonstrates its ability to capture the evolution of the flow and input parameters as it occurs in the full-order model. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUIDS KW - FLUID dynamics KW - REDUCED-order models KW - SPEED KW - SIMULATION methods & models KW - INVARIANT subspaces N1 - Accession Number: 31603771; Hamilton, Howard H. 1 Kurdila, Andrew J. 2 Jammulamadaka, Anand K. 2; Affiliation: 1: U.S. Air Force Research Laboratory, Eglin Air Force Base, Florida 32542 2: Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061; Source Info: Mar2008, Vol. 46 Issue 3, p664; Subject Term: FLUIDS; Subject Term: FLUID dynamics; Subject Term: REDUCED-order models; Subject Term: SPEED; Subject Term: SIMULATION methods & models; Subject Term: INVARIANT subspaces; Number of Pages: 9p; Illustrations: 2 Diagrams, 1 Chart, 9 Graphs; Document Type: Article L3 - 10.2514/1.28896 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31603771&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, X. AU - Pan, E. AU - Roy, A. K. T1 - Circular Inhomogeneity with Viscoelastic Interface Under Antiplane Shear. JO - AIAA Journal JF - AIAA Journal Y1 - 2008/03// VL - 46 IS - 3 M3 - Article SP - 764 EP - 769 SN - 00011452 AB - This investigation addresses in detail a circular inhomogeneity with a viscoelastic interface subjected to remote uniform antiplane shear stresses. Both the inhomogeneity and the surrounding matrix are assumed to be elastic and quasi static, and the interface is viscoelastic, modeled by a linear spring and dashpot. Exact closed-form solutions for both the Kelvin- and Maxwell-type viscoelastic interfaces are obtained by means of the complex variable method. It is observed that when the matrix is subjected to remote uniform shear stresses, the stress field inside the inhomogeneity, although time-dependent, is still uniform. The derived solutions are then used to predict the time-dependent effective shear modulus of the composite based on the Mori--Tanaka mean-field approximation. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VISCOELASTICITY KW - AIRPLANES KW - SHEAR (Mechanics) KW - COMPLEX variables KW - MATRICES KW - APPROXIMATION theory N1 - Accession Number: 31603781; Wang, X. 1; Email Address: xuwang@uakron.edu Pan, E. 1; Email Address: pan2@uakron.edu Roy, A. K. 2; Email Address: Ajit.roy@wpafb.mil; Affiliation: 1: University of Akron, Akron, Ohio 44325-3905 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7750; Source Info: Mar2008, Vol. 46 Issue 3, p764; Subject Term: VISCOELASTICITY; Subject Term: AIRPLANES; Subject Term: SHEAR (Mechanics); Subject Term: COMPLEX variables; Subject Term: MATRICES; Subject Term: APPROXIMATION theory; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; Number of Pages: 6p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.2514/1.33983 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31603781&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Duford, Jeff T1 - THE THINGS WE ARE: AIR FORCE HERITAGE AND HISTORY IN ARTIFACTS. JO - Air Power History JF - Air Power History Y1 - 2008///Spring2008 VL - 55 IS - 1 M3 - Article SP - 4 EP - 15 PB - Air Force Historical Foundation SN - 1044016X AB - The article presents artifacts from U.S. Air Force's national collection and illustrates how these artifacts preserve the country's heritage and history. These include coal briquette, A-2 Jacket, and Gee Whizz Test Sled. A lump coal is the proverbial example of something without worth and it became a bottleneck during the 1948-1949 Berlin Airlift. On the other hand, the leather A-2 jacket is an iconic symbol of esprit de corps for air crews. Lastly, Gee Whizz leads back to stories about people. KW - ANTIQUITIES KW - BRIQUETS KW - LEATHER jackets KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 31331309; Duford, Jeff 1; Affiliation: 1: National Museum, United States Air Force; Source Info: Spring2008, Vol. 55 Issue 1, p4; Subject Term: ANTIQUITIES; Subject Term: BRIQUETS; Subject Term: LEATHER jackets; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 712120 Historical Sites; NAICS/Industry Codes: 212210 Iron Ore Mining; NAICS/Industry Codes: 316998 All Other Leather Good and Allied Product Manufacturing; NAICS/Industry Codes: 316990 Other leather and allied product manufacturing; NAICS/Industry Codes: 315280 Other Cut and Sew Apparel Manufacturing; NAICS/Industry Codes: 315281 Fur and leather clothing manufacturing; NAICS/Industry Codes: 928110 National Security; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31331309&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pomer, Steven A. T1 - Shadow and Stinger: Developing the AC-119G/K Gunships in the Vietnam war. JO - Air Power History JF - Air Power History Y1 - 2008///Spring2008 VL - 55 IS - 1 M3 - Book Review SP - 50 EP - 50 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "Shadow and Stinger: Developing the AC-119G/K Gunships in the Vietnam War," by William P. Head. KW - GUNSHIPS (Military aircraft) KW - NONFICTION KW - HEAD, William P. KW - SHADOW & Stinger: Developing the AC-119G/K Gunships in the Vietnam War (Book) N1 - Accession Number: 31331317; Pomer, Steven A. 1; Affiliation: 1: USAF, Deputy Head, Department of Military Strategic Studies, United States Air Force Academy; Source Info: Spring2008, Vol. 55 Issue 1, p50; Subject Term: GUNSHIPS (Military aircraft); Subject Term: NONFICTION; Reviews & Products: SHADOW & Stinger: Developing the AC-119G/K Gunships in the Vietnam War (Book); People: HEAD, William P.; Number of Pages: 3/4p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31331317&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sierakowski, Robert L. AU - Telitchev, Igor Ye. AU - Zhupanska, Olesya I. T1 - On the impact response of electrified carbon fiber polymer matrix composites: Effects of electric current intensity and duration JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2008/03// VL - 68 IS - 3/4 M3 - Article SP - 639 EP - 649 SN - 02663538 AB - Abstract: In this work, an investigation of the effects of an electric current on the low velocity impact response of carbon fiber polymer matrix unidirectional and cross-ply composites carrying an electric current is presented. Preliminary experimental results show that a short-term application of the DC electric current leads to an increase in the impact resistance of composites, whereas a prolonged application of the current induces a significant heating in the electrified composites and has rather a detrimental effect. The analysis focuses on elucidating the roles of current intensity, duration, and associated current-induced heating in alteration of the composites response. The contributions of Joule heat and contact resistance heat are particularly highlighted. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON fibers KW - POLYMERS KW - ELECTRIC currents KW - ELECTRIC heating KW - A. Carbon fibers KW - A. Polymer–matrix composites (PMCs) KW - B. Impact behavior KW - C. Damage tolerance KW - Electro-thermo-mechanical coupling N1 - Accession Number: 28769190; Sierakowski, Robert L. 1 Telitchev, Igor Ye. 2 Zhupanska, Olesya I. 3; Email Address: ozhupans@engineering.uiowa.edu; Affiliation: 1: Air Force Research Laboratory, Eglin AFB, FL 32542, USA 2: University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4 3: University of Iowa, 2416A Seamans Center for the Engineering Arts and Sciences, Iowa City, IA 52242-1527, USA; Source Info: Mar2008, Vol. 68 Issue 3/4, p639; Subject Term: CARBON fibers; Subject Term: POLYMERS; Subject Term: ELECTRIC currents; Subject Term: ELECTRIC heating; Author-Supplied Keyword: A. Carbon fibers; Author-Supplied Keyword: A. Polymer–matrix composites (PMCs); Author-Supplied Keyword: B. Impact behavior; Author-Supplied Keyword: C. Damage tolerance; Author-Supplied Keyword: Electro-thermo-mechanical coupling; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.compscitech.2007.09.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28769190&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sihn, Sangwook AU - Ganguli, Sabyasachi AU - Roy, Ajit K. AU - Qu, Liangti AU - Dai, Liming T1 - Enhancement of through-thickness thermal conductivity in adhesively bonded joints using aligned carbon nanotubes JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2008/03// VL - 68 IS - 3/4 M3 - Article SP - 658 EP - 665 SN - 02663538 AB - Abstract: A concept of incorporating aligned multi-walled carbon nanotubes (MWCNTs) in the adhesive layer has been demonstrated to enhance the through-thickness thermal conductivity in the adhesively bonded joints. Both numerical and experimental studies were performed to determine key components in improving the through-thickness thermal conductivity and to realize the improvement in an adhesively-jointed system. The numerical analysis indicated that the key components to improve the through-thickness thermal conductivity in the adhesive joints are using highly conductive vertically aligned nanotubes as well as the thermal conductivity and the size of a transition zone between the nanotube ends and surrounding matrix materials in the form of either the adhesive or adherends. Therefore, the thermal contact of the conductive phase (the MWNT in this case) with the adherent surfaces is essential to achieve the desirable through-thickness thermal conductivity in joints. This theoretical observation was demonstrated experimentally by using conductive graphite facesheets as adherends and the polymer adhesive layer with the aligned MWCNTs. To ensure the ends of the MWCNTs make thermal contact with the adherent surfaces, the surface of the adhesive with the MWCNTs were plasma-etched and coated with thin Au layer, along with the surface of the graphite facesheet coated with thin Au–Pd layer. The measured value of the through-thickness thermal conductivity of the modified adhesive joint with the MWNCT was over 250W/mK, which superseded the thermal conductivity of neat adhesive joint by several order of magnitudes. Thus the study demonstrates a new approach as well as opportunities of much needed thermal property tailoring in structural joints. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - NANOTUBES KW - THERMAL conductivity KW - JOINTS (Engineering) KW - A. Adhesive joints KW - A. Nanostructures KW - B. Thermal properties KW - C. Finite element analysis (FEA) KW - E. Chemical vapour deposition (CVD) N1 - Accession Number: 28769192; Sihn, Sangwook 1; Email Address: sangwook@stanfordalumni.org Ganguli, Sabyasachi 2 Roy, Ajit K. 3 Qu, Liangti 4 Dai, Liming 4; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0060, USA 2: Research Associate, National Research Council, Washington, DC, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7750, USA 4: University of Dayton, 300 College Park, Dayton, OH 45469, USA; Source Info: Mar2008, Vol. 68 Issue 3/4, p658; Subject Term: CARBON nanotubes; Subject Term: NANOTUBES; Subject Term: THERMAL conductivity; Subject Term: JOINTS (Engineering); Author-Supplied Keyword: A. Adhesive joints; Author-Supplied Keyword: A. Nanostructures; Author-Supplied Keyword: B. Thermal properties; Author-Supplied Keyword: C. Finite element analysis (FEA); Author-Supplied Keyword: E. Chemical vapour deposition (CVD); Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.compscitech.2007.09.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28769192&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sihn, Sangwook AU - Kim, Ran Y. AU - Huh, Wansoo AU - Lee, Kwang-Hoon AU - Roy, Ajit K. T1 - Improvement of damage resistance in laminated composites with electrospun nano-interlayers JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2008/03// VL - 68 IS - 3/4 M3 - Article SP - 673 EP - 683 SN - 02663538 AB - Abstract: An experimental study was conducted to study the improvement of damage resistance in laminated composites with the addition of electrospun nano-interlayers as the interleave material. The electrospinning process was utilized to fabricate nanofibers and nanofibril mats with and without the CNTs by using three thermoplastic polymers: polycarbonate, poly(phenylene oxide) and polystyrene. The optimal mixture ratio of the solvent and concentration of the CNTs was found to yield optimal fiber formation. It was observed that the fiber becomes thicker with the increase of polymer concentration and the CNT contents. Mechanical tests under uniaxial tensile loading were carried out with a delamination-prone layup of [30/−30/90/90/−30/30]T by placing the polycarbonate electrospun nanofibril mats at the interface between each ply. The difference in total thickness of the laminates with and without five nano-interlayers was less than 0.001mm, which is negligibly thin. The stress levels at the first microcracking damage, delamination damage and ultimate load-drop increased by 8.4%, 8.1% and 9.8%, respectively, with the addition of the nano-interlayers as compared with the pristine specimens. The number of microcracks decreased significantly with the addition of the nano-interlayers. The increase of the FPF strength with the nano-interlayers was analyzed with the Weibull statistical theory and the prediction agreed well with the experimental data. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOFIBERS KW - POLYMERS KW - POLYCARBONATES KW - POLYSTYRENE KW - A. Nanostructures KW - A. Polymer–matrix composites (PMCs) KW - C. Delamination KW - C. Transverse cracking KW - Electrospinning N1 - Accession Number: 28769194; Sihn, Sangwook 1; Email Address: sangwook@stanfordalumni.org Kim, Ran Y. 1 Huh, Wansoo 2 Lee, Kwang-Hoon 2 Roy, Ajit K. 3; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0060, USA 2: Soongsil University, Department of Chemical and Environmental Engineering, Seoul 156-743, Republic of Korea 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Mar2008, Vol. 68 Issue 3/4, p673; Subject Term: NANOFIBERS; Subject Term: POLYMERS; Subject Term: POLYCARBONATES; Subject Term: POLYSTYRENE; Author-Supplied Keyword: A. Nanostructures; Author-Supplied Keyword: A. Polymer–matrix composites (PMCs); Author-Supplied Keyword: C. Delamination; Author-Supplied Keyword: C. Transverse cracking; Author-Supplied Keyword: Electrospinning; NAICS/Industry Codes: 326140 Polystyrene Foam Product Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.compscitech.2007.09.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28769194&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Talbot, Brent J. T1 - The Transatlantic Gap over Iraq. JO - European Security JF - European Security Y1 - 2008/03// VL - 17 IS - 1 M3 - Article SP - 61 EP - 84 SN - 09662839 AB - This paper makes three major arguments: 1) US policy inconsistencies during the Iraq containment era alienated key European allies; 2) the allies really wanted the same outcome as the US in Iraq; and 3) the allies supported the US role as leader of the international system, but they envisioned a cooperative leader, not the unilateral actions of the Clinton and Bush (Jr) administrations. Thus, US policy inconsistencies are partially responsible for the lack of allied support for the 2003 invasion of Iraq. Three time periods are examined: the Gulf War (1990-91), the Clinton-led coalition that continued against Iraq under UN sanctions-prior to the invasion to oust Saddam Hussein (1991-2002), and events during the Bush administration which led to the 2003 takeover of Iraq. The paper concludes with lessons learned and implications for future of US-European relations. [ABSTRACT FROM AUTHOR] AB - Copyright of European Security is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IRAQ War, 2003-2011 KW - PRESIDENTIAL administrations KW - EUROPE -- Foreign relations -- United States KW - IRAQ -- Foreign relations -- United States KW - UNITED States KW - EUROPE KW - IRAQ N1 - Accession Number: 61305928; Talbot, Brent J. 1; Affiliation: 1: US Air Force Academy, CO, USA; Source Info: 2008, Vol. 17 Issue 1, p61; Subject Term: IRAQ War, 2003-2011; Subject Term: PRESIDENTIAL administrations; Subject Term: EUROPE -- Foreign relations -- United States; Subject Term: IRAQ -- Foreign relations -- United States; Subject Term: UNITED States; Subject Term: EUROPE; Subject Term: IRAQ; Number of Pages: 24p; Illustrations: 1 Chart; Document Type: Article L3 - 10.1080/09662830802503722 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61305928&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Telitchev, I.Ye. AU - Sierakowski, R.L. AU - Zhupanska, O.I. T1 - LOW-VELOCITY IMPACT TESTING OF ELECTRIFIED COMPOSITES: PART I—APPLICATION OF ELECTRIC CURRENT. JO - Experimental Techniques JF - Experimental Techniques Y1 - 2008/03// VL - 32 IS - 2 M3 - Article SP - 35 EP - 38 SN - 07328818 AB - The article discusses the experimental setup in studying the effects of electromagnetic field to carbon fiber polymer matrix composite. It states that the experimental setup will provide efficient means in introducing electric current to composites of carbon fiber polymer matrix , and will design procedures in measuring temperature and magnetic field. The setup produces positive results as it achieved good electrical conductivity of composite through the use electrically conductive materials. Illustrations showing the process and diagrams of electrical connections are also presented. KW - ELECTROMAGNETIC fields KW - ELECTRIC insulators & insulation -- Polymers KW - CARBON composites KW - MAGNETIC fields KW - CONDUCTING polymers KW - CARBON fibers KW - ELECTROMAGNETIC theory KW - ELECTRIC fields KW - TESTING N1 - Accession Number: 31412995; Telitchev, I.Ye. 1 Sierakowski, R.L. 2 Zhupanska, O.I. 3; Affiliation: 1: Dr. I.Ye. Telitchev is Research Associate in UF-REEF at the University of Florida, Shalimar, FL 2: Dr. R.L. Sierakowski (SEM member) is Chief Scientist in Munitions Directorate, Air Force Research Laboratory, Eglin Air Force Base, FL 3: Dr. O.I. Zhupanska is Assistant Professor in the Department of Mechanical and Industrial Engineering at the University of Iowa, Iowa City, IA.; Source Info: Mar2008, Vol. 32 Issue 2, p35; Subject Term: ELECTROMAGNETIC fields; Subject Term: ELECTRIC insulators & insulation -- Polymers; Subject Term: CARBON composites; Subject Term: MAGNETIC fields; Subject Term: CONDUCTING polymers; Subject Term: CARBON fibers; Subject Term: ELECTROMAGNETIC theory; Subject Term: ELECTRIC fields; Subject Term: TESTING; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 4p; Illustrations: 1 Black and White Photograph, 2 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1111/j.1747-1567.2007.00223.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31412995&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Debany Jr., Warren H. T1 - Modeling the Spread of Internet Worms via Persistently Unpatched Hosts. JO - IEEE Network JF - IEEE Network Y1 - 2008/03//Mar/Apr2008 VL - 22 IS - 2 M3 - Article SP - 26 EP - 32 SN - 08908044 AB - The article discusses computer worms and malwares and their effects on internet hosts. It is mentioned that self propagation of worms are obtained through heterogenous population of unpatched hosts. Also, worm self-propagation is caused by refreshed vulnerable hosts. According to the author, internet worms and other malware will continue to exist due to the persistent and continuous refreshing of unpatched hosts. He explains that although non-vulnerable hosts are refreshed and repaired, hosts still remain prone to computer worms. KW - COMPUTER worms KW - MALWARE (Computer software) KW - COMPUTER viruses KW - COMPUTER systems -- Maintenance & repair KW - COMPUTER security KW - DATA protection KW - SOFTWARE maintenance KW - INTERNET N1 - Accession Number: 31654531; Debany Jr., Warren H. 1; Affiliation: 1: Air Force Research Laboratory; Source Info: Mar/Apr2008, Vol. 22 Issue 2, p26; Subject Term: COMPUTER worms; Subject Term: MALWARE (Computer software); Subject Term: COMPUTER viruses; Subject Term: COMPUTER systems -- Maintenance & repair; Subject Term: COMPUTER security; Subject Term: DATA protection; Subject Term: SOFTWARE maintenance; Subject Term: INTERNET; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); NAICS/Industry Codes: 541512 Computer Systems Design Services; Number of Pages: 7p; Illustrations: 8 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31654531&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hansen, Thorkild B. AU - Marr, Richard A. AU - Hsia, Justin S. AU - Kim, Kristopher T. AU - Lammers, Uve H. W. AU - Perez, Jimmie J. AU - Tanigawa, Timothy J. T1 - Methods for Locating Stray-Signal Sources in Anechoic Chambers. JO - IEEE Transactions on Instrumentation & Measurement JF - IEEE Transactions on Instrumentation & Measurement Y1 - 2008/03// VL - 57 IS - 3 M3 - Article SP - 480 EP - 489 SN - 00189456 AB - Two complementary numerically efficient frequency-domain methods for locating stray-signal sources in anechoic chambers are investigated and applied in combination to actual measurement data. Both methods use single-frequency near-field data collected on a planar surface and process them to reconstruct field values (images) elsewhere. The first method, which is based on the fact that the probe output satisfies the Helmholtz equation, uses plane waves to backpropagate the scan-plane data and is well suited for fast-Fourier-transform (FFT)-based rapid reconstruction of images on planar surfaces parallel to the scan plane. The second method uses the simple spherical-wave focusing technique and is flexible, in that, it can be used to generate images on either planar or nonplanar surfaces from the data collected on either planar or nonplanar surfaces. When data and image points are both located on a regular grid, the method can be implemented using the FFT-based fast convolution technique. Both methods include a spatial filter for isolating selected plane-wave spectrum components. The two methods are used in combination to successfully locate the strong multiple-bounce stray signals that degrade the quiet zone of a near-field bistatic radar cross-section facility. Subsequent scan data confirm that the suppression of these stray signals indeed substantially improves the quality of the quiet zone. The spherical-focusing method is also used to evaluate the effectiveness of the various absorber configurations applied to selected edges of the reflector to control edge-diffracted fields. It is shown that the reduction of the edge-diffracted fields further improves the quiet zone. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Instrumentation & Measurement is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANECHOIC chambers KW - ABSORPTION of sound KW - ACOUSTICAL engineering KW - HELMHOLTZ equation KW - ELLIPTIC differential equations KW - RADAR KW - Anechoic chamber KW - back propagation KW - compact range KW - quiet zone KW - scan plane KW - stray sources N1 - Accession Number: 30001167; Hansen, Thorkild B. 1 Marr, Richard A. 2 Hsia, Justin S. 2 Kim, Kristopher T. 2 Lammers, Uve H. W. 2 Perez, Jimmie J. 3 Tanigawa, Timothy J. 2; Affiliation: 1: Seknion, Inc., Boston, MA 02135 USA 2: Electromagnetic Scattering Branch, Electromagnetics Technology Division, Air Force Research Laboratory, Hanscom Air Force Base, Bedford, MA 01731 USA 3: Air Force Institute of Technology, Wright Patterson Air Force Base, OH 45433 USA; Source Info: Mar2008, Vol. 57 Issue 3, p480; Subject Term: ANECHOIC chambers; Subject Term: ABSORPTION of sound; Subject Term: ACOUSTICAL engineering; Subject Term: HELMHOLTZ equation; Subject Term: ELLIPTIC differential equations; Subject Term: RADAR; Author-Supplied Keyword: Anechoic chamber; Author-Supplied Keyword: back propagation; Author-Supplied Keyword: compact range; Author-Supplied Keyword: quiet zone; Author-Supplied Keyword: scan plane; Author-Supplied Keyword: stray sources; Number of Pages: 10p; Illustrations: 2 Diagrams, 12 Graphs; Document Type: Article L3 - 10.1109/TIM.2007.911574 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30001167&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Termier, Alexandre AU - Rousset, Marie-Christine AU - Sebag, Michële AU - Ohara, Kouzou AU - Washio, Takashi AU - Motoda, Hiroshi T1 - DRYADEPARENT, An Efficient and Robust Closed Attribute Tree Mining Algorithm. JO - IEEE Transactions on Knowledge & Data Engineering JF - IEEE Transactions on Knowledge & Data Engineering Y1 - 2008/03// VL - 20 IS - 3 M3 - Article SP - 300 EP - 320 SN - 10414347 AB - In this paper, we present a new tree mining algorithm, DryadeParent, based on the hooking principle first introduced in Dryade. In the experiments, we demonstrate that the branching factor and depth of the frequent patterns to find are key factors of complexity for tree mining algorithms, even if often overlooked in previous work. We show that DryadeParent outperforms the current fastest algorithm, CMTreeMiner, by orders of magnitude on datasets where the frequent patterns have a high branching factor. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Knowledge & Data Engineering is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DATA mining KW - DATABASE searching KW - CONTENT mining KW - ONLINE data processing KW - COMPUTER algorithms KW - ONLINE algorithms KW - Data mining KW - mining methods and algorithms KW - mining tree structured data N1 - Accession Number: 30016250; Termier, Alexandre 1; Email Address: alexandre@imag.fr Rousset, Marie-Christine 1; Email Address: marie-christine.rousset@imag.fr Sebag, Michële 2; Email Address: michele.sebag@lri.fr Ohara, Kouzou 3; Email Address: ohara@ar.sanken.osaka-u.ac.jp Washio, Takashi 3; Email Address: washiol@ar.sanken.osaka-u.ac.jp Motoda, Hiroshi 4; Email Address: hiroshi.motoda.JP@aoard.af.mil; Affiliation: 1: Laboratoire d'Informatique de Grenoble, University of Grenoble, 681 rue de la Passerelle, BP 72, 38402 St. Martin d'Heres Cedex, France 2: Laboratoire de Recherche en Informatique (LRI), Université Paris-Sud, Bat 490, 91405 Orsay, France 3: Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047 Japan 4: Asian Office of Aerospace Research and Development, Air Force Office of Scientific Research, Air Force Research Laboratory, 7-23-17 Roppongi, Minato-ku, Tokyo 106-0032, Japan; Source Info: Mar2008, Vol. 20 Issue 3, p300; Subject Term: DATA mining; Subject Term: DATABASE searching; Subject Term: CONTENT mining; Subject Term: ONLINE data processing; Subject Term: COMPUTER algorithms; Subject Term: ONLINE algorithms; Author-Supplied Keyword: Data mining; Author-Supplied Keyword: mining methods and algorithms; Author-Supplied Keyword: mining tree structured data; Number of Pages: 21p; Illustrations: 20 Diagrams, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1109/TKDE.2007.190695 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30016250&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li Bai AU - Blasch, Erik T1 - Two-Way Handshaking Circular Sequential k-Out-of-n Congestion System. JO - IEEE Transactions on Reliability JF - IEEE Transactions on Reliability Y1 - 2008/03// VL - 57 IS - 1 M3 - Article SP - 59 EP - 70 SN - 00189529 AB - Many communication systems require a two-way, or three-way handshaking process to improve their dependability & authenticity in order to achieve a more successful operation. In this paper, we present a new two-way handshaking reliability model based upon (k, n) threshold-based cryptography systems. Such systems require a two-way handshaking process to i) establish a group of participated servers in the first handshaking process, and ii) calculate a cipher with k successfully connected servers collaboratively in the second handshaking process. When the servers are attempted, each server has three known connection probabilities in the following three states: i) successful, ii) breakdown, and iii) congested. These connection probabilities are unchanged in both handshaking processes. During the first handshaking process, we establish connections that more than k servers are willing to participate. For the second handshaking process, the system becomes successful as soon as we can connect these k servers successfully again. Because we need to connect k servers successfully in the second handshaking process, we would rather connect in additional servers besides the k servers required to be connected successfully in the first handshaking process. This preference will minimize the chance that the system breaks down when fewer than k servers can be reconnected successfully in the second handshaking process. We refer to this system as a Two- Way Handshaking Circular Sequential k-out-of-n Congestion (TWHCSknC) system. In this paper, we derived analytical formulas for the system's successful probability & average stop length, and we showed that the TWHCSknC system is a communication system with an efficient two-way handshaking process. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Reliability is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TELECOMMUNICATION systems KW - HANDSHAKING KW - PROBABILITY theory KW - FAILURE time data analysis KW - MATHEMATICAL statistics KW - Circular consecutive k-out-of-n:F system KW - circular sequential k-out-of-n congestion system KW - congestion KW - ternary state circular sequential k-out-of-n congestion system N1 - Accession Number: 31435742; Li Bai 1; Email Address: lbai@temple.edu Blasch, Erik 2; Email Address: ErikBlasch@wpafb.af.mil; Affiliation: 1: Computer Fusion Laboratory in the Department of Electrical and Computer Engineering, Temple University, Philadelphia, PA 19122 USA 2: Air Force Research Laboratory Sensor Directorate (AFRL/SN), OH 45433 USA; Source Info: Mar2008, Vol. 57 Issue 1, p59; Subject Term: TELECOMMUNICATION systems; Subject Term: HANDSHAKING; Subject Term: PROBABILITY theory; Subject Term: FAILURE time data analysis; Subject Term: MATHEMATICAL statistics; Author-Supplied Keyword: Circular consecutive k-out-of-n:F system; Author-Supplied Keyword: circular sequential k-out-of-n congestion system; Author-Supplied Keyword: congestion; Author-Supplied Keyword: ternary state circular sequential k-out-of-n congestion system; NAICS/Industry Codes: 517410 Satellite Telecommunications; Number of Pages: 12p; Illustrations: 2 Charts, 2 Graphs; Document Type: Article L3 - 10.1109/TR.2007.909771 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31435742&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hong, L. AU - Ruan, Y. AU - Li, W. AU - Wicker, D. AU - Layne, J. T1 - Energy-based video tracking using joint target density processing with an application to unmanned aerial vehicle surveillance. JO - IET Computer Vision JF - IET Computer Vision Y1 - 2008/03// VL - 2 IS - 1 M3 - Article SP - 1 EP - 12 PB - Institution of Engineering & Technology SN - 17519632 AB - Successfully tracking targets in a video sequence has many important applications, including unmanned aerial vehicle (UAV) surveillance. A robust and efficient video tracking algorithm based on the continuous wavelet transform (CWT) is presented, which has been proven to be effective in capturing motion information over multiple frames and excellent in velocity selectivity. The CWT converts target trajectories in a spatio-temporal domain into target energy volumes in a wavenumber–frequency domain. By integrating over different motion parameters, three target energy densities are obtained, which then serve as cost functions for estimating target trajectories and sizes. Because of excellent velocity selectivity, the energy-based tracker has the capability of detecting and tracking targets with a particular velocity range. To best handle target interferences among multiple nearby or crossing targets, a novel joint processing technique using expectation-maximization-based Gaussian mixture estimation is developed. A global nearest neighbourhood algorithm is employed to perform data association and maintain continuous kinematic trajectories. In addition to computer simulations, the developed energy-based algorithm is applied to a UAV surveillance application where multiple vehicles move closely to each other on a multi-lane road. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Computer Vision is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARTIFICIAL satellite tracking KW - VIDEO recording KW - SURVEILLANCE detection KW - ALGORITHMS KW - COMPUTER simulation N1 - Accession Number: 31376273; Hong, L. 1; Email Address: lang.hong@wright.edu Ruan, Y. 1 Li, W. 1 Wicker, D. 2 Layne, J. 2; Affiliation: 1: Department of Electrical Engineering, Wright State University, Dayton, OH 45435, USA 2: SNAT, Sensors Directorate, Air Force Research Laboratory, WPAFB, OH 45433, USA; Source Info: Mar2008, Vol. 2 Issue 1, p1; Subject Term: ARTIFICIAL satellite tracking; Subject Term: VIDEO recording; Subject Term: SURVEILLANCE detection; Subject Term: ALGORITHMS; Subject Term: COMPUTER simulation; NAICS/Industry Codes: 517910 Other telecommunications; NAICS/Industry Codes: 517919 All Other Telecommunications; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 12p; Illustrations: 7 Color Photographs, 1 Black and White Photograph, 5 Diagrams, 7 Graphs; Document Type: Article L3 - 10.1049/iet-cvi:20070017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31376273&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Teeguarden, Justin G. AU - Bogdanffy, Matthew S. AU - Covington, Tammie R. AU - Tan, Cecilia AU - Jarabek, Annie M. T1 - A PBPK Model for Evaluating the Impact of Aldehyde Dehydrogenase Polymorphisms on Comparative Rat and Human Nasal Tissue Acetaldehyde Dosimetry. JO - Inhalation Toxicology JF - Inhalation Toxicology Y1 - 2008/03// VL - 20 IS - 4 M3 - Article SP - 375 EP - 390 PB - Taylor & Francis Ltd SN - 08958378 AB - Acetaldehyde is an important intermediate in the chemical synthesis and normal oxidative metabolism of several industrially important compounds, including ethanol, ethyl acetate, and vinyl acetate. Chronic inhalation of acetaldehyde leads to degeneration of the olfactory and respiratory epithelium in rats at concentrations > 50 ppm (90 day exposure) and respiratory and olfactory nasal tumors at concentrations ≥ 750 ppm, the lowest concentration tested in the 2-yr chronic bioassay. Differences in the anatomy and biochemistry of the rodent and human nose, including polymorphisms in human high-affinity acetaldehyde dehydrogenase (ALDH2), are important considerations for interspecies extrapolations in the risk assessment of acetaldehyde. A physiologically based pharmacokinetic model of rat and human nasal tissues was constructed for acetaldehyde to support a dosimetry-based risk assessment for acetaldehyde (Dorman et al., 2008). The rodent model was developed using published metabolic constants and calibrated using upper-respiratory-tract acetaldehyde extraction data. The human nasal model incorporates previously published tissue volumes, blood flows, and acetaldehyde metabolic constants. ALDH2 polymorphisms were represented in the human model as reduced rates of acetaldehyde metabolism. Steady-state dorsal olfactory epithelial tissue acetaldehyde concentrations in the rat were predicted to be 409, 6287, and 12,634 μM at noncytotoxic (50 ppm), and cytotoxic/tumorigenic exposure concentrations (750 and 1500 ppm), respectively. The human equivalent concentration (HEC) of the rat no-observed-adverse-effect level (NOAEL) of 50 ppm, based on steady-state acetaldehyde concentrations from continual exposures, was 67 ppm. Respiratory and olfactory epithelial tissue acetaldehyde and H+ (pH) concentrations were largely linear functions of exposure in both species. The impact of presumed ALDH2 polymorphisms on human olfactory tissue concentrations was negligible; the high-affinity, low-capacity ALDH2 does not contribute significantly to acetaldehyde metabolism in the nasal tissues. The human equivalent acetaldehyde concentration for homozygous low activity was 66 ppm, 1.5% lower than for the homozygous full activity phenotype. The rat and human acetaldehyde PBPK models developed here can also be used as a bridge between acetaldehyde dose-response and mode-of-action data as well as between similar databases for other acetaldehyde-producing nasal toxicants. [ABSTRACT FROM AUTHOR] AB - Copyright of Inhalation Toxicology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALDEHYDE dehydrogenase KW - METABOLISM KW - ALDEHYDES KW - ALCOHOL dehydrogenase KW - BLOOD circulation KW - ADENYLIC acid KW - BODY fluid flow KW - HEMODYNAMICS KW - VINYL acetate N1 - Accession Number: 30066825; Teeguarden, Justin G. 1; Email Address: justin.teeguarden@pnl.gov Bogdanffy, Matthew S. 2 Covington, Tammie R. 3 Tan, Cecilia 4 Jarabek, Annie M. 5; Affiliation: 1: Biological Monitoring and Modeling, Pacific Northwest National Laboratory, Richland, Washington, USA. 2: Boehringer Ingelheim Pharmaceuticals, Ridgefield, Connecticut, USA. 3: Human Effectiveness Directorate, Air Force Research Laboratory, Wright Patterson AFB, Dayton, Ohio, USA. 4: Hamner Institutes for Health Sciences, Research Triangle Park, North Carolina, USA. 5: U.S. EPA, Office of Research and Development, National Health Effects Research Laboratory, Experimental Toxicology Division, Pharmacokinetics Branch, Research Triangle Park, North Carolina, USA.; Source Info: Mar2008, Vol. 20 Issue 4, p375; Subject Term: ALDEHYDE dehydrogenase; Subject Term: METABOLISM; Subject Term: ALDEHYDES; Subject Term: ALCOHOL dehydrogenase; Subject Term: BLOOD circulation; Subject Term: ADENYLIC acid; Subject Term: BODY fluid flow; Subject Term: HEMODYNAMICS; Subject Term: VINYL acetate; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 16p; Illustrations: 2 Diagrams, 9 Charts, 3 Graphs; Document Type: Article L3 - 10.1080/08958370801903750 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30066825&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yalin Lu AU - Knize, R. J. T1 - NOVEL SLAB-COUPLED LiNbO3 WAVEGUIDE FOR NONLINEAR OPTICAL APPLICATIONS. JO - Integrated Ferroelectrics JF - Integrated Ferroelectrics Y1 - 2008/03// VL - 98 IS - 1 M3 - Article SP - 147 EP - 155 SN - 10584587 AB - A new slab-coupled optical waveguide (SCOW) using lithium niobate (LiNbO3) crystals were designed and experimentally demonstrated. The new LiNbO3SCOW structure composes of a main guiding core and a coupled leaky slab laterally confinement by two etched drains. The SCOW supports the propagation of the single spatial mode (having positive propagation constant), and leaks all high-order modes into the slab (imaginary propagation constants). Significance of such SCOWs will be the availability of a large and circular core to support the fundamental mode propagation, which could largely reduce the possibility of waveguide damage because of high optical power density, and reduce coupling losses to adjacent components including high power near infrared (NIR) diode lasers. Such SCOWs can find wide applications in nonlinear optics. [ABSTRACT FROM AUTHOR] AB - Copyright of Integrated Ferroelectrics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL waveguides KW - LITHIUM niobate KW - NIOBATES KW - NONLINEAR optics KW - NONLINEAR optical spectroscopy KW - frequency conversion KW - mid-IR KW - PPLN KW - quasi-phase matching KW - SCOW N1 - Accession Number: 32771357; Yalin Lu 1; Email Address: yalin.lu@usafa.edu Knize, R. J. 1; Affiliation: 1: Laser and Optics Research Center (LORC), the Physics Department, United States Air Force Academy, CO 80840; Source Info: 2008, Vol. 98 Issue 1, p147; Subject Term: OPTICAL waveguides; Subject Term: LITHIUM niobate; Subject Term: NIOBATES; Subject Term: NONLINEAR optics; Subject Term: NONLINEAR optical spectroscopy; Author-Supplied Keyword: frequency conversion; Author-Supplied Keyword: mid-IR; Author-Supplied Keyword: PPLN; Author-Supplied Keyword: quasi-phase matching; Author-Supplied Keyword: SCOW; Number of Pages: 9p; Illustrations: 1 Black and White Photograph, 3 Diagrams, 1 Graph; Document Type: Article L3 - 10.1080/10584580802092647 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32771357&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bowman, Bruce R. AU - Kent Tobiska, W. AU - Marcos, Frank A. AU - Valladares, Cesar T1 - The JB2006 empirical thermospheric density model JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2008/03// VL - 70 IS - 5 M3 - Article SP - 774 EP - 793 SN - 13646826 AB - Abstract: A new empirical atmospheric density model is developed using the CIRA72 (Jacchia 71) model as the basis for the diffusion equations. New solar indices based on orbit-based sensor data are used for the solar irradiances in the extreme and far ultraviolet wavelengths. New exospheric temperature and semiannual density equations are employed to represent the major thermospheric density variations. Temperature correction equations are also developed for diurnal and latitudinal effects, and finally density correction factors are used for model corrections required at high altitude (1500–4000km). The new model, Jacchia–Bowman 2006, is validated through comparisons of accurate daily density drag data previously computed for numerous satellites. For 400km altitude the standard deviation of 16% for the standard Jacchia model is reduced to 10% for the new JB2006 model for periods of low geomagnetic storm activity. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UPPER atmosphere KW - ATMOSPHERIC density KW - SPECIFIC gravity KW - MATTER -- Properties KW - Neutral density KW - Semiannual variation KW - Solar EUV KW - Thermosphere KW - Thermosphere models N1 - Accession Number: 30870050; Bowman, Bruce R. 1; Email Address: bruce.bowman@peterson.af.mil Kent Tobiska, W. 2; Email Address: ktobiska@spacenvironment.net Marcos, Frank A. 3; Email Address: frank.marcos@hanscom.af.mil Valladares, Cesar 4; Email Address: valladar@bc.edu; Affiliation: 1: Air Force Space Command, Space Analysis/A9AC, 250 S. Peterson Boulevard, Suite 116, Peterson AFB, CO 80914, USA 2: Space Environment Technologies, 1676 Palisades Dr., Pacific Palisades, CA 90272, USA 3: Air Force Research Laboratory, Space Vehicles Directorate, AFRL /VSBXT, 29 Randolph Road, Hanscom AFB, MA 01731-3010, USA 4: Boston College, Institute for Space Research, 140 Commonwealth Avenue, St. Clement's Hall 410, Chestnut Hill, MA 02467-3862, USA; Source Info: Mar2008, Vol. 70 Issue 5, p774; Subject Term: UPPER atmosphere; Subject Term: ATMOSPHERIC density; Subject Term: SPECIFIC gravity; Subject Term: MATTER -- Properties; Author-Supplied Keyword: Neutral density; Author-Supplied Keyword: Semiannual variation; Author-Supplied Keyword: Solar EUV; Author-Supplied Keyword: Thermosphere; Author-Supplied Keyword: Thermosphere models; Number of Pages: 20p; Document Type: Article L3 - 10.1016/j.jastp.2007.10.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30870050&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bettencourt, M.T. T1 - Flux limiting embedded boundary technique for electromagnetic FDTD JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2008/03// VL - 227 IS - 6 M3 - Article SP - 3141 EP - 3158 SN - 00219991 AB - Abstract: A general approach for incorporating embedded boundaries into an electromagnetic finite difference time domain (FDTD) code is presented. This algorithm is shown to satisfy Gauss’s law and enforces no magnetic monopoles while maintaining a globally second-order result (first-order at physical boundaries), with no added time-step restriction. Theoretically predicted superior results are shown with an 11% time-step reduction from the Courant stability limit. This is achieved through a physics-based flux limiting scheme near physical boundaries. Stability, local truncation error and energy conservation analysis are also provided. [Copyright &y& Elsevier] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FINITE differences KW - ALGORITHMS KW - ENERGY conservation KW - NUMERICAL analysis KW - Conformal boundaries KW - Electromagnetic KW - EM KW - Embedded boundaries KW - FDTD KW - Finite difference time domain KW - Flux limiting N1 - Accession Number: 30025874; Bettencourt, M.T. 1; Email Address: icepic@kirtland.af.mil; Affiliation: 1: Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, NM 87117, United States; Source Info: Mar2008, Vol. 227 Issue 6, p3141; Subject Term: FINITE differences; Subject Term: ALGORITHMS; Subject Term: ENERGY conservation; Subject Term: NUMERICAL analysis; Author-Supplied Keyword: Conformal boundaries; Author-Supplied Keyword: Electromagnetic; Author-Supplied Keyword: EM; Author-Supplied Keyword: Embedded boundaries; Author-Supplied Keyword: FDTD; Author-Supplied Keyword: Finite difference time domain; Author-Supplied Keyword: Flux limiting; Number of Pages: 18p; Document Type: Article L3 - 10.1016/j.jcp.2007.11.043 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30025874&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mass, J. AU - Avella, M. AU - Jiménez, J. AU - Rodríguez, A. AU - Rodríguez, T. AU - Callahan, M. AU - Bliss, D. AU - Wang, Buguo T1 - Cathodoluminescence study of ZnO wafers cut from hydrothermal crystals JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2008/03// VL - 310 IS - 5 M3 - Article SP - 1000 EP - 1005 SN - 00220248 AB - Abstract: ZnO is a wide bandgap semiconductor with very promising expectation for UV optoelectronics. The existence of large crystals should allow homoepitaxial growth of ZnO films for advanced optoelectronic devices. However, the ZnO substrates are not yet mature. Both defect induced by growth and by polishing together with the high reactivity of the surface are problems to their industrial application. Cathodoluminescence (CL) was used to probe the quality of substrates from two different suppliers. The surface damage was studied by varying the penetration depth of the electron beam, allowing to observe significant differences between the two samples within a 0.5-μm-thick surface layer. CL spectra show a complex band (P1) at ∼3.3eV composed of two overlapped bands (3.31 and 3.29eV) related to point defects (PD) and the 1-LO phonon replica of the free exciton (FX-1LO). This band (P1) is shown to be very sensitive to the presence of defects and the surface and thermal treatments. Its intensity compared with the excitonic band intensity is demonstrated to provide criteria about the quality of the substrates. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTOELECTRONICS KW - DISLOCATIONS in crystals KW - CRYSTALLOGRAPHY KW - CRYSTALS KW - 71.55.Gs KW - A1. Cathodoluminescence KW - A1. Defects KW - B1. ZnO bulk N1 - Accession Number: 30072161; Mass, J. 1,2 Avella, M. 1 Jiménez, J. 1; Email Address: jimenez@fmc.uva.es Rodríguez, A. 3 Rodríguez, T. 3 Callahan, M. 4 Bliss, D. 4 Wang, Buguo 5; Affiliation: 1: Física de la Materia Condensada, ETSII, 47011 Valladolid, Spain 2: Dpto. Matemáticas y Física, UniNorte, Km 5 Barranquilla, Colombia 3: Tecnología Electrónica, ETSIT, Universidad Politécnica de Madrid, 28028 Madrid, Spain 4: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA 01731, USA 5: Solid State Scientific Corporation, Hollis, NH 03049, USA; Source Info: Mar2008, Vol. 310 Issue 5, p1000; Subject Term: OPTOELECTRONICS; Subject Term: DISLOCATIONS in crystals; Subject Term: CRYSTALLOGRAPHY; Subject Term: CRYSTALS; Author-Supplied Keyword: 71.55.Gs; Author-Supplied Keyword: A1. Cathodoluminescence; Author-Supplied Keyword: A1. Defects; Author-Supplied Keyword: B1. ZnO bulk; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jcrysgro.2007.11.095 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30072161&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Olejniczak, Anna AU - Katrusiak, Andrzej AU - Vij, Ashwani T1 - Interpenetrated structure and compressibility studies in pressure frozen pentafluoropyridine crystals at 0.3 and 1.1GPa JO - Journal of Fluorine Chemistry JF - Journal of Fluorine Chemistry Y1 - 2008/03// VL - 129 IS - 3 M3 - Article SP - 173 EP - 177 SN - 00221139 AB - Abstract: Pentafluoropyridine has been pressure frozen in situ in a diamond-anvil cell (DAC) and its structure determined at 0.30(5) and 1.10(5)GPa and at room temperature by single-crystal X-ray diffraction. The freezing pressure of pentafluoropyridine has been determined to be 0.10(5)GPa. The crystals are monoclinic, space group P21/c. The crystal packing is governed by F⋯F and C/N⋯F van der Waals contacts, but no ring stacking is observed. The intermolecular interactions are non-directional, and the crystal compresses nearly isotropically between 0.3 and 1.1GPa. [Copyright &y& Elsevier] AB - Copyright of Journal of Fluorine Chemistry is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICAL & theoretical chemistry KW - CRYSTALLIZATION KW - SEPARATION (Technology) KW - HIGH pressure (Science) KW - Halogen⋯nitrogen interactions KW - High-pressure crystallization KW - Interpenetrated structures KW - Pentafluoropyridine N1 - Accession Number: 29961849; Olejniczak, Anna 1 Katrusiak, Andrzej 1; Email Address: katran@amu.edu.pl Vij, Ashwani 2; Email Address: ashwani.vij@edwards.af.mil; Affiliation: 1: Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznan, Poland 2: Air Force Research Laboratory/RZSP, 10 E. Saturn Boulevard, Building 8451, Edwards AFB, CA 93524, USA; Source Info: Mar2008, Vol. 129 Issue 3, p173; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: CRYSTALLIZATION; Subject Term: SEPARATION (Technology); Subject Term: HIGH pressure (Science); Author-Supplied Keyword: Halogen⋯nitrogen interactions; Author-Supplied Keyword: High-pressure crystallization; Author-Supplied Keyword: Interpenetrated structures; Author-Supplied Keyword: Pentafluoropyridine; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jfluchem.2007.10.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=29961849&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, R. H. AU - Bauer, A. M. AU - Killingsworth, M. D. AU - Lilly, T. C. AU - Duncan, J. A. AU - Ketsdever, A. D. T1 - Free-Molecule-Microresistojet Performance Using Water Propellant for Nanosatellite Applications. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2008/03//Mar/Apr2008 VL - 45 IS - 2 M3 - Article SP - 264 EP - 269 SN - 00224650 AB - Advances in microtechnology manufacturing and capability have led to an increased interest in micro- and nanosatellites. A propulsion system was designed to meet the on-orbit attitude control requirements for nanospacecraft. The free-molecule microresistojet, a low-cost, low-power, high propellant-storage density, and green propulsion system, was analyzed in this study to determine its ability to provide a slew maneuver for a typical 10-kg nanosatellite. Additionally, a free-molecule-microresistojet technology demonstrator was fabricated using traditional and microelectromechanical systems techniques. The technology demonstrator was analyzed and tested in this study to determine its performance characteristics when operating with water propellant. Experimental data show that the free-molecule microresistojet, with a heated wall temperature of 580 K, can attain a specific impulse of 79.2 s with a thrust level of 129 µN. For a given mass flow, higher thrust levels can be achieved by increasing the temperature of the free-molecule-microresistojet heater chip. The experimental results agree favorably with predicted values from kinetic theory. Applying the measured performance of the technology demonstrator to an optimized setup, the free-molecule-microresistojet system could provide a 45-deg slew of a typical nanosatellite in 60 s, which is acceptable for many nanosatellite applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROTECHNOLOGY KW - NANOSATELLITES KW - ARTIFICIAL satellites KW - MICROELECTROMECHANICAL systems KW - PROPELLANTS KW - KINETIC theory of matter N1 - Accession Number: 31966724; Lee, R. H. 1,2 Bauer, A. M. 1,2 Killingsworth, M. D. 1,2 Lilly, T. C. 1,2 Duncan, J. A. 1,2 Ketsdever, A. D. 3,4; Affiliation: 1: University of Southern California, Los Angeles, Los Angeles California 90089-1191 2: Student Member, AIAA 3: U.S. Air Force Research Laboratory, Edwards Air Force Base, California 93524 4: Member, AIAA; Source Info: Mar/Apr2008, Vol. 45 Issue 2, p264; Subject Term: MICROTECHNOLOGY; Subject Term: NANOSATELLITES; Subject Term: ARTIFICIAL satellites; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: PROPELLANTS; Subject Term: KINETIC theory of matter; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 6p; Illustrations: 3 Diagrams, 2 Charts, 8 Graphs; Document Type: Article L3 - 10.2514/1.32341 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31966724&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tokish, John M. AU - Curtin, Michael S. AU - Young-Kyu Kim AU - Hawkins, Richard J. AU - Torry, Michael R. T1 - Glenohumeral internal rotation deficit in the asymptomatic professional pitcher and its relationship to humeral retroversion. JO - Journal of Sports Science & Medicine JF - Journal of Sports Science & Medicine Y1 - 2008/03// VL - 7 IS - 1 M3 - Article SP - 78 EP - 83 SN - 13032968 AB - The article discusses a study which determines whether the glenohumeral internal rotation deficits (GIRD) exist in an asymptomatic population of professional pitchers and its relationship to humeral retroversion. The study showed no statistically significant relationship between GIRD and measures of soft tissue contributions in asymptomatic population. It is concluded that the internal rotation deficits should not be used as the sole screening tool to diagnose the disabled throwing shoulder. KW - SHOULDER joint -- Range of motion KW - SOFT tissue injuries KW - GLENOHUMERAL joint KW - PITCHERS (Baseball) KW - THROWING (Sports) KW - Glenohumeral internal rotation KW - humeral retroversion KW - pitcher ROM N1 - Accession Number: 31599745; Tokish, John M. 1; Email Address: John.Tokish@usafa.af.mil Curtin, Michael S. 2; Email Address: mcurtain@yahoo.com Young-Kyu Kim 3; Email Address: kykhyr@ghil.com Hawkins, Richard J. 4; Email Address: Richard.Hawkins@shcc.info Torry, Michael R. 5; Email Address: mike.torry@shsmf.org; Affiliation: 1: United States Air Force Academy, Colorado Springs, CO, USA 2: Boise Orthopedics, Boise Idaho, USA 3: Gachen University, Department of Orthopedics, Inchon, South Korea 4: Steadman♦Hawkins Clinic of the Carolinas, Spartanburg, SC, USA 5: Steadman♦Hawkins Research Foundation, Vail, CO, USA; Source Info: Mar2008, Vol. 7 Issue 1, p78; Subject Term: SHOULDER joint -- Range of motion; Subject Term: SOFT tissue injuries; Subject Term: GLENOHUMERAL joint; Subject Term: PITCHERS (Baseball); Subject Term: THROWING (Sports); Author-Supplied Keyword: Glenohumeral internal rotation; Author-Supplied Keyword: humeral retroversion; Author-Supplied Keyword: pitcher ROM; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31599745&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fontanari, José F. AU - Perlovsky, Leonid I. T1 - How language can help discrimination in the Neural Modelling Fields framework JO - Neural Networks JF - Neural Networks Y1 - 2008/03// VL - 21 IS - 2/3 M3 - Article SP - 250 EP - 256 SN - 08936080 AB - Abstract: The relationship between thought and language and, in particular, the issue of whether and how language influences thought is still a matter of fierce debate. Here we consider a discrimination task scenario to study language acquisition in which an agent receives linguistic input from an external teacher, in addition to sensory stimuli from the objects that exemplify the overlapping categories that make up the environment. Sensory and linguistic input signals are fused using the Neural Modelling Fields (NMF) categorization algorithm. We find that the agent with language is capable of differentiating object features that it could not distinguish without language. In this sense, the linguistic stimuli prompt the agent to redefine and refine the discrimination capacity of its sensory channels. [Copyright &y& Elsevier] AB - Copyright of Neural Networks is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THOUGHT & thinking KW - LANGUAGE & languages KW - LANGUAGE acquisition KW - NEURAL circuitry KW - SENSORY stimulation KW - SENSORY discrimination KW - Acquisition of language KW - Clustering algorithms KW - Neural Modeling Fields N1 - Accession Number: 31304127; Fontanari, José F. 1; Email Address: fontanari@ifsc.usp.br Perlovsky, Leonid I. 2,3; Email Address: Leonid.Perlovsky@hanscom.af.mil; Affiliation: 1: Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos SP, Brazil 2: Harvard University, 33 Oxford St, Rm 336, Cambridge MA 02138, United States 3: Air Force Research Laboratory, 80 Scott Drive, Hanscom Air Force Base, MA, United States; Source Info: Mar2008, Vol. 21 Issue 2/3, p250; Subject Term: THOUGHT & thinking; Subject Term: LANGUAGE & languages; Subject Term: LANGUAGE acquisition; Subject Term: NEURAL circuitry; Subject Term: SENSORY stimulation; Subject Term: SENSORY discrimination; Author-Supplied Keyword: Acquisition of language; Author-Supplied Keyword: Clustering algorithms; Author-Supplied Keyword: Neural Modeling Fields; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.neunet.2007.12.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31304127&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Repperger, D. W. AU - Phillips, C. A. AU - Aleva, Denise L. AU - Fullenkamp, Steve C. T1 - COMPLEXITY OF VISUAL ICONICS OBJECTS AND INFORMATION THEORY. JO - Ohio Journal of Science JF - Ohio Journal of Science Y1 - 2008/03// VL - 108 IS - 1 M3 - Article SP - A-11 EP - A-12 PB - Ohio Academy of Science SN - 00300950 AB - An important goal of making complex displays more efficient in providing information to human decision makers is to ascertain the levels of complexity of visual iconic objects on the displays. Through performance studies, quantitative limits of human information processing were obtained related to military iconic objects. The military iconic object set (MIL2525B) is the standard which was investigated. The hypothesis is that as visual iconic objects become more complex, they exponentially lose their ability to accurately portray information to decision makers. Seven subjects participated in an evaluation of a visually rendered military iconic object for up to ten degrees of complexity (dimension number). Subjects were required to make a binary choice on the state of a dimension at different presentation times. The accuracy of the subject's choice was determined. Across subjects and stimulus presentation times showed an exponential dependence between accuracy and dimension number with correlation greater than 0.92 . The null hypothesis that no change in performance would occur as dimension number increased could be rejected with p<.001. The exponential rule between performance and complexity obtained shows that correct identification drops rapidly beyond 6 dimensions of the object. This study demonstrates that the design of military iconic objects must take into account humans limitations on their ability to glean information from displays in an efficient manner. Adding more data to complex displays is not necessarily productive in informing decision makers about intricate visual renderings. [ABSTRACT FROM AUTHOR] AB - Copyright of Ohio Journal of Science is the property of Ohio Academy of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY symbols KW - SIGNS & symbols KW - HUMAN information processing KW - INFORMATION theory KW - VISUAL communication N1 - Accession Number: 31745938; Repperger, D. W. 1; Email Address: daniel.repperger@wpafb.af.mil Phillips, C. A. 2 Aleva, Denise L. 1 Fullenkamp, Steve C. 3; Affiliation: 1: Air Force Research Laboratory, AFRL/RHCV, Dayton, OH 2: Wright-Patterson, AFB, OH 45433, Wright State University, Dayton, OH 3: General Dynamics Corporation, Dayton, OH; Source Info: Mar2008, Vol. 108 Issue 1, pA-11; Subject Term: MILITARY symbols; Subject Term: SIGNS & symbols; Subject Term: HUMAN information processing; Subject Term: INFORMATION theory; Subject Term: VISUAL communication; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31745938&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, Martin L. T1 - Revolt of the Generals: A Case Study in Professional Ethics. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College Y1 - 2008///Spring2008 VL - 38 IS - 1 M3 - Article SP - 4 EP - 15 SN - 00311723 AB - The article focuses on professional ethics, and the questions on military professionalism in the United States. According to the author, military professionalism has received a lot of debates, and analysis due to several reasons including the losing sense in professionalism by the Army officers, and the application of ethics to the Armies' professional knowledge. Also discussed are debates on the professionalism of Secretary of Defense Donald Rumsfeld. KW - ETHICS KW - PROFESSIONAL ethics KW - MILITARY departments & divisions -- United States KW - PROFESSIONALISM KW - UNITED States N1 - Accession Number: 31704260; Cook, Martin L. 1; Affiliation: 1: Professor of Philosophy and Deputy Department Head, US Air Force Academy; Source Info: Spring2008, Vol. 38 Issue 1, p4; Subject Term: ETHICS; Subject Term: PROFESSIONAL ethics; Subject Term: MILITARY departments & divisions -- United States; Subject Term: PROFESSIONALISM; Subject Term: UNITED States; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31704260&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lobad, Ahmed I. AU - Pease, E. A. AU - Dawson, L. R. AU - Krishna, Sanjay AU - Vern Schlie, L. A. T1 - Extraction of radiative and nonradiative rates in Sb based midwave infrared lasers using a novel approach. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2008/03// VL - 79 IS - 3 M3 - Article SP - 033904 PB - American Institute of Physics SN - 00346748 AB - We developed a technique using nonlinear correlation of photoluminescence (PL) to characterize midwave infrared lasers by extracting the density and temperature dependence of the carrier lifetime and its exact branching into radiative and nonradiative processes. This was accomplished, without time resolving the PL recovery, through mathematical optimization. We extracted this information by using a laser source that can be operated in both continuous-wave and short pulse modes. Through fitting of the PL signal and its nonlinear correlation for both laser modes of operation, the carrier lifetime as a function of density is extracted. As a proof of principle, we investigated a midinfrared Sb based laser and showed that the radiative branching ratio drops from ∼54% at 80 K to about 3% at room temperature, resulting from an order of magnitude increase in the nonradiative rate coupled with a factor of 2 reduction in the radiative rate. We believe that this is a very generic approach and can be extended to various luminescing material systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - ANTIMONY KW - PHOTOLUMINESCENCE KW - MATHEMATICAL optimization KW - LASER beams N1 - Accession Number: 31546654; Lobad, Ahmed I. 1; Email Address: ahmed.lobad@kirtland.af.mil Pease, E. A. 2 Dawson, L. R. 2 Krishna, Sanjay 2 Vern Schlie, L. A. 3; Affiliation: 1: Boeing LTS, Albuquerque, New Mexico 87117 2: Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87106 3: Directed Energy Directorate, Air Force Research Laboratory, Albuquerque, New Mexico 87117; Source Info: Mar2008, Vol. 79 Issue 3, p033904; Subject Term: LASERS; Subject Term: ANTIMONY; Subject Term: PHOTOLUMINESCENCE; Subject Term: MATHEMATICAL optimization; Subject Term: LASER beams; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 6p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.2894310 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31546654&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Belletire, John L. AU - Bills, Robert A. AU - Shackelford, Scott A. T1 - Practical Methylation Procedure for (1H)-1,2,4-Triazole. JO - Synthetic Communications JF - Synthetic Communications Y1 - 2008/03// VL - 38 IS - 5 M3 - Article SP - 738 EP - 745 PB - Taylor & Francis Ltd SN - 00397911 AB - Conversion of (1H)-1,2,4-triazole to its sodium salt with methanolic sodium methoxide is followed by reaction with iodomethane. A scalable approach that overcomes problems associated with water-soluble starting material and water-soluble product combined continuous extraction (chloroform/water) with a final short-path distillation under a controlled vacuum to obtain spectroscopically pure 1-methyl-1,2,4-triazole in 63% yield. Adaptation to microwave synthesis conditions, while providing a faster reaction time, offers no product yield or purification advantages over the conventional approach described. Conversions of this product to related derivatives such as 1,4-dimethyl-1,2,4-triazolium iodide and 1-methyl-1,2,4-triazolium hydrochloride are readily achieved. [ABSTRACT FROM AUTHOR] AB - Copyright of Synthetic Communications is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METHYLATION KW - TRIAZOLES KW - ALKYLATION KW - SODIUM salts KW - ORGANIC chemistry KW - 1,2,4-triazole sodium salt KW - 1-methyl-1,2,4-triazole KW - regioselective alkylation KW - sequential continuous extraction KW - short-path distillation N1 - Accession Number: 29377492; Belletire, John L. 1 Bills, Robert A. 2 Shackelford, Scott A. 2; Email Address: scott.shackelford@edwards.af.mil; Affiliation: 1: ERC Incorporated, Air Force Research Laboratory, Edwards Air Force Base, California, USA 2: Air Force Research Laboratory, Space and Missile Propulsion Directorate, Propellants Branch, Edwards Air Force Base, California, USA; Source Info: 2008, Vol. 38 Issue 5, p738; Subject Term: METHYLATION; Subject Term: TRIAZOLES; Subject Term: ALKYLATION; Subject Term: SODIUM salts; Subject Term: ORGANIC chemistry; Author-Supplied Keyword: 1,2,4-triazole sodium salt; Author-Supplied Keyword: 1-methyl-1,2,4-triazole; Author-Supplied Keyword: regioselective alkylation; Author-Supplied Keyword: sequential continuous extraction; Author-Supplied Keyword: short-path distillation; Number of Pages: 8p; Illustrations: 1 Diagram; Document Type: Article L3 - 10.1080/00397910701820319 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=29377492&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ko, Ray T. AU - Blodgett, Mark P. AU - Sathish, Shamachary AU - Boehnlein, Thomas R. T1 - RESONANT FREQUENCY EDDY CURRENT LIFTOFF MEASUREMENTS FOR SHOT PEENING INTENSITY ASSESSMENT IN MATERIALS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/28/ VL - 975 IS - 1 M3 - Article SP - 344 EP - 351 PB - American Institute of Physics SN - 0094243X AB - The shot peening intensity of nickel base materials has been examined with an innovative eddy current measurement. The goal is to provide a nondestructive tool to quantitatively evaluate the surface conditions after shot peening. Traditionally, the residual stress caused by the shot peening process can be examined by X-ray diffraction. Recent eddy current works have shown promising results in evaluating the small conductivity variation due to the residual stress. This study explores the feasibility of utilizing the cable which connects to a network analyzer and a conventional eddy current probe to monitor the surface conditions due to the shot peening. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - ELECTRIC currents KW - STRAINS & stresses (Mechanics) KW - MATERIALS KW - SHOT peening KW - Eddy Current KW - Liftoff KW - Resonant Frequency KW - Shot Peening N1 - Accession Number: 31223492; Ko, Ray T. 1 Blodgett, Mark P. 1 Sathish, Shamachary 2 Boehnlein, Thomas R. 2; Affiliation: 1: Metals, Ceramics, and NDE Division, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433 2: Structural Integrity Division, University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469-0120; Source Info: 2/28/2008, Vol. 975 Issue 1, p344; Subject Term: EDDY currents (Electric); Subject Term: ELECTRIC currents; Subject Term: STRAINS & stresses (Mechanics); Subject Term: MATERIALS; Subject Term: SHOT peening; Author-Supplied Keyword: Eddy Current; Author-Supplied Keyword: Liftoff; Author-Supplied Keyword: Resonant Frequency; Author-Supplied Keyword: Shot Peening; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; Number of Pages: 8p; Illustrations: 3 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1063/1.2902679 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31223492&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nalladega, Vijay AU - Sathish, Shamachary AU - Jata, Kumar. V. AU - Blodgett, Mark. P. T1 - HIGH RESOLUTION EDDY CURRENT IMAGING WITH ATOMIC FORCE MICROSCOPE. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/28/ VL - 975 IS - 1 M3 - Article SP - 400 EP - 406 PB - American Institute of Physics SN - 0094243X AB - Eddy current testing is a widely used nondestructive evaluation technique of materials. This technique offers measurement of electrical conductivity and magnetic permeability of materials. Since the presence of defects significantly changes the electrical conductivity, eddy current testing is widely used to detect defects, cracks in materials. The resolution in eddy current imaging is mainly limited by the diameter of the sensor, which is most often greater than 500 μm. This paper presents development of an eddy current microscopy based on an Atomic Force Microscope (AFM) to image local variations in the electrical conductivity of materials with submicron resolution. The newly developed methodology has been used to characterize materials with varying electrical conductivities. Simultaneously acquired AFM surface topography images and eddy current images of the same region of the samples are presented. The contrast observed in eddy current images is explained based on the local electrical conductivity variations in the materials. The advantages and limitations of the AFM based eddy current imaging to study the electrically conductive materials are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - ATOMIC force microscopy KW - NONDESTRUCTIVE testing KW - ELECTRIC conductivity KW - MAGNETIC permeability KW - Atomic Force Microscope (AFM) KW - Conductivity KW - Eddy Currents N1 - Accession Number: 31223483; Nalladega, Vijay 1,2 Sathish, Shamachary 1 Jata, Kumar. V. 3 Blodgett, Mark. P. 3; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0120 2: Department of Mechanical Engineering, University of Dayton, 300 College Park, Dayton, OH 45469-0210 3: Air Force Research Laboratory, 2230 10; Source Info: 2/28/2008, Vol. 975 Issue 1, p400; Subject Term: EDDY currents (Electric); Subject Term: ATOMIC force microscopy; Subject Term: NONDESTRUCTIVE testing; Subject Term: ELECTRIC conductivity; Subject Term: MAGNETIC permeability; Author-Supplied Keyword: Atomic Force Microscope (AFM); Author-Supplied Keyword: Conductivity; Author-Supplied Keyword: Eddy Currents; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 7p; Illustrations: 2 Color Photographs, 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1063/1.2902688 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31223483&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chiou, Chien-Ping AU - Thompson, R. Bruce AU - Blackshire, James L. T1 - MODELING OF TERAHERTZ RAY SIGNALS FOR NDE APPLICATIONS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/28/ VL - 975 IS - 1 M3 - Article SP - 414 EP - 420 PB - American Institute of Physics SN - 0094243X AB - Recently, terahertz ray (T-ray) imaging has emerged as one of the most promising new techniques for NDE applications. This technique, however, is still in its early development, and requires further studies. This work explores the use of state-of-the-art computer modeling technologies to study T-ray radiation in media. A series of point source synthesis models have been developed, using both the classic Fresnel-Kirchhoff and the refined Rayleigh-Sommerfeld formulations. The flexibility of these models enables us to investigate T-ray propagation through interfaces of various geometry and morphology. That in turn allows us to simulate T-ray interaction with flaws and hence to predict the flaw responses. In this paper, we present preliminary results of simulating T-ray inspection of space shuttle's spray-on foam insulation structure. Included are comparisons with experimental data of drilled holes embedded in foam sample. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TERAHERTZ spectroscopy KW - NONDESTRUCTIVE testing KW - COMPUTER simulation KW - SPACE vehicles -- Shielding (Heat) KW - THERMAL insulation KW - Point Source Synthesis Models KW - Signal Modeling KW - Space Shuttle Foam Inspection KW - Terahertz Imaging N1 - Accession Number: 31223481; Chiou, Chien-Ping 1 Thompson, R. Bruce 1 Blackshire, James L. 2; Affiliation: 1: Center for Nondestructive Evaluation, Iowa State University, Ames, Iowa 50011 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio 45433; Source Info: 2/28/2008, Vol. 975 Issue 1, p414; Subject Term: TERAHERTZ spectroscopy; Subject Term: NONDESTRUCTIVE testing; Subject Term: COMPUTER simulation; Subject Term: SPACE vehicles -- Shielding (Heat); Subject Term: THERMAL insulation; Author-Supplied Keyword: Point Source Synthesis Models; Author-Supplied Keyword: Signal Modeling; Author-Supplied Keyword: Space Shuttle Foam Inspection; Author-Supplied Keyword: Terahertz Imaging; NAICS/Industry Codes: 238310 Drywall and Insulation Contractors; NAICS/Industry Codes: 423330 Roofing, Siding, and Insulation Material Merchant Wholesalers; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 7p; Illustrations: 1 Color Photograph, 1 Black and White Photograph, 3 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.2902690 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31223481&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ko, Ray T. AU - Steffes, Gary J. T1 - DEEP DEFECT DETECTION WITHIN THICK MULTILAYER AIRCRAFT STRUCTURES CONTAINING STEEL FASTENERS USING A GIANT-MAGNETO RESISTIVE (GMR) SENSOR. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/28/ VL - 975 IS - 1 M3 - Article SP - 865 EP - 872 PB - American Institute of Physics SN - 0094243X AB - Defect detection within thick multilayer structures containing steel fasteners is a challenging task in eddy current testing due to the magnetic permeability of the fasteners and overall thickness of the structure. To address these issues, a magnet is applied to the fasteners during the inspection to reduce the noise caused by the permeability. Using a GMR sensor coupled with a lock-in amplifier to increase eddy current sensitivity, data is obtained and at low frequencies. After developing a basic signal processing algorithm, the experimental results show this system can detect second layer defects occurring 10-mm below the surface of an aluminum structure with steel fasteners. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - MAGNETORESISTANCE KW - AIRPLANES -- Parts KW - STRUCTURAL engineering KW - GAUSSIAN Markov random fields KW - PHYSICS KW - Eddy Current KW - GMR KW - Low Frequency KW - Permeability N1 - Accession Number: 31223418; Ko, Ray T. 1 Steffes, Gary J. 2; Affiliation: 1: Metals, Ceramics, and NDE Division, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433 2: Structural Integrity Division, University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469-0120; Source Info: 2/28/2008, Vol. 975 Issue 1, p865; Subject Term: EDDY currents (Electric); Subject Term: MAGNETORESISTANCE; Subject Term: AIRPLANES -- Parts; Subject Term: STRUCTURAL engineering; Subject Term: GAUSSIAN Markov random fields; Subject Term: PHYSICS; Author-Supplied Keyword: Eddy Current; Author-Supplied Keyword: GMR; Author-Supplied Keyword: Low Frequency; Author-Supplied Keyword: Permeability; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 8p; Illustrations: 2 Diagrams, 6 Graphs; Document Type: Article L3 - 10.1063/1.2902754 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31223418&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Case, J. T. AU - Kharkovsky, S. AU - Zoughi, R. AU - Steffes, G. AU - Hepburn, F. L. T1 - MILLIMETER WAVE HOLOGRAPHICAL INSPECTION OF HONEYCOMB COMPOSITES. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/28/ VL - 975 IS - 1 M3 - Article SP - 970 EP - 975 PB - American Institute of Physics SN - 0094243X AB - Multi-layered composite structures manufactured with honeycomb, foam, or balsa wood cores are finding increasing utility in a variety of aerospace, transportation, and infrastructure applications. Due to the low conductivity and inhomogeneity associated with these composites, standard nondestructive testing (NDT) methods are not always capable of inspecting their interior for various defects caused during the manufacturing process or as a result of in-service loading. On the contrary, microwave and millimeter wave NDT methods are well-suited for inspecting these structures since signals at these frequencies readily penetrate through these structures and reflect from different interior boundaries revealing the presence of a wide range of defects such as isband, delamination, moisture and oil intrusion, impact damage, etc. Millimeter wave frequency spectrum spans 30 GHz–300 GHz with corresponding wavelengths of 10-1 mm. Due to the inherent short wavelengths at these frequencies, one can produce high spatial resolution images of these composites either using real-antenna focused or synthetic-aperture focused methods. In addition, incorporation of swept-frequency in the latter method (i.e., holography) results in high-resolution three-dimensional images. This paper presents the basic steps behind producing such images at millimeter wave frequencies and the results of two honeycomb composite panels are demonstrated at Q-band (33–50 GHz). In addition, these results are compared to previous results using X-ray computed tomography. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HONEYCOMB structures KW - COMPOSITE materials KW - HOLOGRAPHY KW - SANDWICH construction (Materials) KW - LAMINATED materials KW - PHYSICS KW - Holography KW - Honeycomb Composites KW - Millimeter Waves N1 - Accession Number: 31223402; Case, J. T. 1 Kharkovsky, S. 1 Zoughi, R. 1 Steffes, G. 2 Hepburn, F. L. 3; Affiliation: 1: Applied Microwave Nondestructive Testing Laboratory (amntl) Electrical and Computer Engineering Department University of Missouri-Rolla Rolla, MO 65409 2: Air Force Research Laboratory (AFRL) Materials and Manufacturing Directorate 2230 Tenth Street, Ste. 1 Wright-Patterson, OH 45433 3: NASA George C. Marshall Space Flight Center, MSFC, AL 35812; Source Info: 2/28/2008, Vol. 975 Issue 1, p970; Subject Term: HONEYCOMB structures; Subject Term: COMPOSITE materials; Subject Term: HOLOGRAPHY; Subject Term: SANDWICH construction (Materials); Subject Term: LAMINATED materials; Subject Term: PHYSICS; Author-Supplied Keyword: Holography; Author-Supplied Keyword: Honeycomb Composites; Author-Supplied Keyword: Millimeter Waves; Number of Pages: 6p; Illustrations: 6 Black and White Photographs, 1 Chart; Document Type: Article L3 - 10.1063/1.2902771 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31223402&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, Richard W. AU - Sathish, Shamachary AU - Jata, Kumar V. T1 - INVESTIGATION OF LOCAL ELASTIC PROPERTIES IN FRICTION STIR WELDED TI-6AL-4V USING SCANNING ACOUSTIC MICROSCOPY. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/28/ VL - 975 IS - 1 M3 - Article SP - 1050 EP - 1057 PB - American Institute of Physics SN - 0094243X AB - Local changes in the microstructure and ultrasonic wave velocity variation across a friction weld in Ti-6A1-4V are investigated using scanning acoustic microscopy. Surface and bulk acoustic wave velocity and amplitude measurements performed across the weld are presented. The changes in the characteristics of the surface waves are related to the near surface microstructure in different parts of the weld. The bulk velocity and amplitude changes thru the thickness show bright and dark bands particularly in the nugget region. Possible reasons for formation of such bands are discussed. Application of acoustic microscopy to detect localized process induced defects in friction stir welds is discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WELDING KW - FORGING KW - IRONWORK KW - MICROSCOPY KW - MICROMECHANICS KW - MORPHOLOGY KW - Elastic Properties KW - Focused Acoustic Beam KW - Friction Stir Welding N1 - Accession Number: 31223623; Martin, Richard W. 1 Sathish, Shamachary 1 Jata, Kumar V. 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0127 2: Air Force Research Laboratory, Metals, Ceramics and NDE Division Wright Patterson AFB, Dayton, OH 45433; Source Info: 2/28/2008, Vol. 975 Issue 1, p1050; Subject Term: WELDING; Subject Term: FORGING; Subject Term: IRONWORK; Subject Term: MICROSCOPY; Subject Term: MICROMECHANICS; Subject Term: MORPHOLOGY; Author-Supplied Keyword: Elastic Properties; Author-Supplied Keyword: Focused Acoustic Beam; Author-Supplied Keyword: Friction Stir Welding; NAICS/Industry Codes: 332112 Nonferrous Forging; NAICS/Industry Codes: 332111 Iron and Steel Forging; NAICS/Industry Codes: 332113 Forging; NAICS/Industry Codes: 238190 Other Foundation, Structure, and Building Exterior Contractors; Number of Pages: 8p; Illustrations: 6 Black and White Photographs, 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1063/1.2902548 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31223623&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, Steven A. AU - Jata, Kumar V. AU - Martin, Richard W. AU - Sathish, Shamachary T1 - MODELING OF ACOUSTIC WAVE PROPAGATION THROUGH VARYING GRAIN SIZE STRUCTURE. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/28/ VL - 975 IS - 1 M3 - Article SP - 1140 EP - 1147 PB - American Institute of Physics SN - 0094243X AB - Traditional models of ultrasonic wave propagation are primarily useful for NDE of homogeneous and isotropic materials. In the presence of spatial variations of elastic properties in materials, ultrasonic wave propagation simulation as well as NDE becomes challenging. In view of these challenges, the computational modeling approaches are suitable to incorporate the spatial elastic property variations and elastic anisotropy into simulations of ultrasonic wave propagation. This paper investigates the application of finite element based simulation of ultrasonic wave propagation in materials with varying grain sizes and associated ultrasonic wave velocities. As an example, the method is used to simulate ultrasonic wave propagation through Aluminum-Lithium high strength structure. Acoustic microscopically measured local elastic properties across the weld are incorporated into the simulation. Results of simulation of Rayleigh Surface Wave (RSW) and bulk acoustic wave propagation in the FSW structure are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOUND waves KW - ULTRASONICS KW - WELDING KW - IRONWORK KW - ELASTICITY KW - Elastic Properties KW - Focused Acoustic Beam KW - Friction Stir Welding N1 - Accession Number: 31223611; Martin, Steven A. 1 Jata, Kumar V. 2 Martin, Richard W. 3 Sathish, Shamachary 3; Affiliation: 1: NDE Computational Consultants, 7697 Aldridge Place, Dublin, OH 43017-8530 2: Air Force Research Laboratory, Metals, Ceramics and NDE Division, 2230 Tenth St., Wright Patterson AFB, Dayton, OH 45433-7817 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0127; Source Info: 2/28/2008, Vol. 975 Issue 1, p1140; Subject Term: SOUND waves; Subject Term: ULTRASONICS; Subject Term: WELDING; Subject Term: IRONWORK; Subject Term: ELASTICITY; Author-Supplied Keyword: Elastic Properties; Author-Supplied Keyword: Focused Acoustic Beam; Author-Supplied Keyword: Friction Stir Welding; NAICS/Industry Codes: 332111 Iron and Steel Forging; NAICS/Industry Codes: 238190 Other Foundation, Structure, and Building Exterior Contractors; Number of Pages: 8p; Illustrations: 1 Color Photograph, 1 Black and White Photograph, 4 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.2902560 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31223611&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kundu, T. AU - Das, S. AU - Jata, K. V. T1 - POINT OF IMPACT PREDICTION IN ANISOTROPIC FIBER REINFORCED COMPOSITE PLATES FROM THE ACOUSTIC EMISSION DATA. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/28/ VL - 975 IS - 1 M3 - Article SP - 1405 EP - 1412 PB - American Institute of Physics SN - 0094243X AB - A newly developed optimization based method is followed to locate the point of impact in anisotropic composite plates for which conventional triangulation technique fails. The new technique works for both anisotropic and isotropic plates. Experiments are carried out by dropping a steel ball on a graphite-epoxy composite plate and picking up acoustic signals by passive transducers adhesively bonded to the plate at different locations. Predicted points of impact are compared with the true impact point. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIBROUS composites KW - ACOUSTIC emission testing KW - IMPACT (Mechanics) KW - ANISOTROPY KW - ACOUSTIC emission KW - Acoustic KW - Anisotropic KW - Composite KW - Emission KW - Impact KW - Lamb Wave KW - Passive Monitoring KW - Plate N1 - Accession Number: 31223571; Kundu, T. 1 Das, S. 1 Jata, K. V. 2; Affiliation: 1: Department of Civil Engineering and Engineering Mechanics, University of Arizona, Tucson, Arizona 85721 2: Air Force Research Laboratory, MLLP, NDE Branch Wright Patterson Air Force Base Ohio 45433; Source Info: 2/28/2008, Vol. 975 Issue 1, p1405; Subject Term: FIBROUS composites; Subject Term: ACOUSTIC emission testing; Subject Term: IMPACT (Mechanics); Subject Term: ANISOTROPY; Subject Term: ACOUSTIC emission; Author-Supplied Keyword: Acoustic; Author-Supplied Keyword: Anisotropic; Author-Supplied Keyword: Composite; Author-Supplied Keyword: Emission; Author-Supplied Keyword: Impact; Author-Supplied Keyword: Lamb Wave; Author-Supplied Keyword: Passive Monitoring; Author-Supplied Keyword: Plate; Number of Pages: 8p; Illustrations: 1 Color Photograph, 3 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1063/1.2902600 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31223571&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mazdiyasni, Siamack T1 - OPPORTUNITIES AND CHALLENGES IN NDE AND HEALTH MONITORING OF TURBINE ENGINE COMPONENTS. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/28/ VL - 975 IS - 1 M3 - Article SP - 1468 EP - 1475 PB - American Institute of Physics SN - 0094243X AB - Advanced high temperature sensors and instrumentation for potential aircraft gas turbine propulsion health monitoring has been explored through significant research and development in the laboratory in the past two decades [8–17]. With continued emphasis on safety, improving engine life cycle cost and fuel efficiency, and increasing durability and life, there is strong impetus to move these technologies out of the laboratory and onto the engines. The objective of this paper is to provide a perspective of the opportunities and challenges in implementing advanced nondestructive evaluation (NDE) and health monitoring techniques on aircraft gas turbine engine components, and to propose an approach for accelerating implementation to meet Air Force objectives. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TURBINES KW - NONDESTRUCTIVE testing KW - ENGINES KW - SAFETY KW - LIFE cycle costing KW - RESEARCH KW - Health Monitoring KW - High Temperature KW - NDE KW - Sensor KW - Turbine Engines N1 - Accession Number: 31223563; Mazdiyasni, Siamack 1; Affiliation: 1: NDE Branch, Air Force Research Laboratory, Wright-Patterson AFB OH 45433; Source Info: 2/28/2008, Vol. 975 Issue 1, p1468; Subject Term: TURBINES; Subject Term: NONDESTRUCTIVE testing; Subject Term: ENGINES; Subject Term: SAFETY; Subject Term: LIFE cycle costing; Subject Term: RESEARCH; Author-Supplied Keyword: Health Monitoring; Author-Supplied Keyword: High Temperature; Author-Supplied Keyword: NDE; Author-Supplied Keyword: Sensor; Author-Supplied Keyword: Turbine Engines; NAICS/Industry Codes: 333618 Other Engine Equipment Manufacturing; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 8p; Illustrations: 3 Color Photographs, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.2902608 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31223563&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buynak, C. F. AU - Blackshire, J. AU - Lindgren, E. A. AU - Jata, K. V. T1 - CHALLENGES AND OPPORTUNITIES IN NDE, ISHM AND MATERIAL STATE AWARENESS FOR AIRCRAFT STRUCTURES: US AIR FORCE PERSPECTIVE. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/28/ VL - 975 IS - 1 M3 - Article SP - 1789 EP - 1801 PB - American Institute of Physics SN - 0094243X AB - As one of the primary data and information sources in the maintenance of USAF Aging Military Fleet, NDE plays a major role in the definition and operation of maintenance processes on these aircraft. To focus new NDE developmental efforts, the AFRL NDE R&D group has the charter to research, develop and transition new capabilities to the field and depot users. This multi-faceted task is achieved through a balanced NDE and on-board sensor development program with the ultimate goal to transition technology to the Air Force user Commands. Technology requirements for NDE and Material State Awareness emerge from Air Force Initiatives to realize Condition Based Maintenance and to develop the “Depot of the Future”. This evening session will present an overview of Air Force Initiatives, emerging R&D issues for Structural Health Monitoring and NDE methodologies as well as basic research initiatives within the Air Force Research Laboratory. It is intended that the session provide an open forum to pursue paths for new technology development and application. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES -- Design & construction KW - MILITARY airplanes -- Design & construction KW - DETECTORS KW - UNITED States KW - Material State Awareness KW - NDE KW - Sensing System Development KW - USAF KW - UNITED States. Air Force N1 - Accession Number: 31223518; Buynak, C. F. 1 Blackshire, J. 1 Lindgren, E. A. 1 Jata, K. V. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Nondestructive Evaluation Branch, WPAFB, OH; Source Info: 2/28/2008, Vol. 975 Issue 1, p1789; Subject Term: AIRPLANES -- Design & construction; Subject Term: MILITARY airplanes -- Design & construction; Subject Term: DETECTORS; Subject Term: UNITED States; Author-Supplied Keyword: Material State Awareness; Author-Supplied Keyword: NDE; Author-Supplied Keyword: Sensing System Development; Author-Supplied Keyword: USAF; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 928110 National Security; Number of Pages: 13p; Document Type: Article L3 - 10.1063/1.2902653 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31223518&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jong-Beom Baek AU - Loon-Seng Tan T1 - Synthesis and Properties of Polyetherketone-block-Polybenzobisthiazole-block-Polyetherketone ABA Triblock Copolymers. JO - Macromolecules JF - Macromolecules Y1 - 2008/02/26/ VL - 41 IS - 4 M3 - Article SP - 1196 EP - 1205 SN - 00249297 AB - As an approach to rigid-rod molecular composites, a series of PEK-b-PBZT-b-PEK ABA triblock copolymers were synthesized. Three different types of polyetherketones (PEKs) as coil A-block units and the carboxylic acid-terminated polybenzobisthiazoles (PBZTs) with two different molecular weights as rigid-rod B-block units were utilized to afford the targeted ABA triblock copolymers. The resulting triblock copolymers were insoluble in common polar aprotic solvents such as N-methylpyrrolidinone, dimethylformamide, dimethylacetamide, and dimethyl sulfoxide but showed greatly improved solubility in strong acids such as trifluoroacetic acid, methanesulfonic acid (MSA), trifluoromethanesulfonic acid, and sulfuric acid. Good quality films could be cast from solutions. Alternatively, we could also process these copolymers by the compression molding technique. The block copolymer samples were simply heated above the transition temperatures of the coil components and pressed into articles with desired shapes. The wide-angle X-ray diffraction study of the selected solution-cast film exhibited a long-range ordering, which is indicative of microphase separation. This was further confirmed by the results from small-angle X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. In addition, the UV−vis absorption behavior of the copolymer solutions implied that the ground state conformations of PBZT in MSA were greatly dependent on the amorphous or the semicrystalline nature of the PEK unit, which has little or no effect on the emission properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - ELECTRON microscopy KW - COPOLYMERS KW - OPTICAL diffraction N1 - Accession Number: 31844728; Jong-Beom Baek 1 Loon-Seng Tan 1; Affiliation: 1: School of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk,361-763 South Korea, and Nanostructured & Biological Materials Branch,Materials & Manufacturing Directorate, AFRL/RXBP, Air Force Research Laboratory,Wright-Patterson Air Force Base, Dayton, Ohio 45433-7750; Source Info: Feb2008, Vol. 41 Issue 4, p1196; Subject Term: POLYMERS; Subject Term: ELECTRON microscopy; Subject Term: COPOLYMERS; Subject Term: OPTICAL diffraction; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31844728&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, J. AU - Kwon, J. H. AU - Yoon, J. AU - Wang, H. AU - Haugan, T. J. AU - Baca, F. J. AU - Pierce, N. A. AU - Barnes, P. N. T1 - Flux pinning in YBa2Cu3O7-δ thin film samples linked to stacking fault density. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/02/25/ VL - 92 IS - 8 M3 - Article SP - 082507 PB - American Institute of Physics SN - 00036951 AB - In this paper, we report a strong correlation between the stacking fault (SF) density and the critical current density of YBa2Cu3O7-δ (YBCO) thin films in applied field (Jcin-field). We found that the Jcin-field (H∥c) increases as a clear linear dependence of the density of SF identified in the as-grown samples deposited on both SrTiO3 (STO) and LaAlO3 substrates. Detailed microstructural studies including cross-section transmission electron microscopy (TEM) and high resolution TEM were conducted for all the films deposited on STO substrates. This work suggests that the YBCO SF density plays an important role in the YBCO in-field transport performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - ELECTRON microscopy KW - MICROSCOPY KW - PHYSICS KW - MAGNETIC fields N1 - Accession Number: 31229919; Wang, J. 1 Kwon, J. H. 1 Yoon, J. 1 Wang, H. 1; Email Address: wangh@ece.tamu.edu Haugan, T. J. 2 Baca, F. J. 2 Pierce, N. A. 2 Barnes, P. N. 2; Affiliation: 1: Department of Electrical and Computer Engineering, Texas A&M University, College Station, Texas 77843-3128 2: Air Force Research Laboratory, Propulsion Directorate-Power Division, Wright-Patterson AFB, Ohio 45433-7251; Source Info: 2/25/2008, Vol. 92 Issue 8, p082507; Subject Term: THIN films; Subject Term: ELECTRON microscopy; Subject Term: MICROSCOPY; Subject Term: PHYSICS; Subject Term: MAGNETIC fields; Number of Pages: 3p; Illustrations: 1 Black and White Photograph, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.2888749 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31229919&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H. J. AU - Elhamri, S. AU - Szmulowicz, F. AU - Ullrich, B. AU - Brown, G. J. AU - Mitchel, W. C. T1 - Study of residual background carriers in midinfrared InAs/GaSb superlattices for uncooled detector operation. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/02/18/ VL - 92 IS - 7 M3 - Article SP - 071102 PB - American Institute of Physics SN - 00036951 AB - The midinfrared 7 ML InAs/8 ML GaSb superlattices (SLs) were grown by molecular beam epitaxy at growth temperatures between 370 and 430 °C in order to study the intrinsic characteristic of background carriers. Grown SLs were all residual p type with carrier densities in the low 1011 cm-2, and a minimum density of 1.8×1011 cm-2 was obtained from the SL grown at 400 °C. With increasing growth temperature, the in-plane carrier mobility decreased from 8740 to 1400 cm2/V s due to increased interfacial roughness, while the photoluminescence intensity increased sixfold due to a decrease in the nonradiative defect densities. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR beam epitaxy KW - TEMPERATURE measurements KW - DENSITY KW - SURFACE roughness KW - EPITAXY N1 - Accession Number: 31139346; Haugan, H. J. 1; Email Address: heather.haugan.ctr@us.af.mil Elhamri, S. 1 Szmulowicz, F. 1 Ullrich, B. 1 Brown, G. J. 1 Mitchel, W. C. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433; Source Info: 2/18/2008, Vol. 92 Issue 7, p071102; Subject Term: MOLECULAR beam epitaxy; Subject Term: TEMPERATURE measurements; Subject Term: DENSITY; Subject Term: SURFACE roughness; Subject Term: EPITAXY; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.2884264 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31139346&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Breitzman, Timothy AU - Lipton, Robert AU - Iarve, Endel T1 - A Hi Fidelity Asymptotic Theory For Local Field Recovery Inside Pre-stressed Composite Media. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/15/ VL - 973 IS - 1 M3 - Article SP - 165 EP - 170 PB - American Institute of Physics SN - 0094243X AB - We introduce a new mathematically rigorous high fidelity asymptotic theory for recovering the local field behavior inside complex composite architectures. The theory applies to zones containing strong spatial variance of local material properties. The method is used to recover the local field across ply interfaces for a pre-stressed multi-ply fiber reinforced composite. The results are shown to be in good agreement with direct numerical simulations for realistic fiber sizes and fiber-matrix elastic properties. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPOSITE materials KW - ELASTICITY KW - STRAINS & stresses (Mechanics) KW - LOCAL fields (Algebra) KW - FUNCTIONALLY gradient materials KW - Asymptotic Expansion KW - De-homogenization KW - Multi-scale Method N1 - Accession Number: 30101773; Breitzman, Timothy 1 Lipton, Robert 2 Iarve, Endel 3; Affiliation: 1: Air Force Research Laboratory, Wright Patterson AFB, OH 45433. 2: Department of Mathematics, Louisiana State University, Baton Rouge, LA 70803. 3: University of Dayton Research Institute, 300 College Park, Dayton OH 45469.; Source Info: 2/15/2008, Vol. 973 Issue 1, p165; Subject Term: COMPOSITE materials; Subject Term: ELASTICITY; Subject Term: STRAINS & stresses (Mechanics); Subject Term: LOCAL fields (Algebra); Subject Term: FUNCTIONALLY gradient materials; Author-Supplied Keyword: Asymptotic Expansion; Author-Supplied Keyword: De-homogenization; Author-Supplied Keyword: Multi-scale Method; Number of Pages: 6p; Illustrations: 3 Diagrams, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.2896770 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30101773&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Birman, Victor AU - Chona, Ravinder AU - Byrd, Larry W. T1 - Effect of Two-Dimensional Grading on the Thermomechanical Response of the Panel. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/15/ VL - 973 IS - 1 M3 - Article SP - 339 EP - 345 PB - American Institute of Physics SN - 0094243X AB - Some of the advantages of functionally graded materials (FGM) are related to their ability to provide a better thermal protection and reduce delamination tendencies present in layered composites. In particular, in ceramic-metal systems these goals can be achieved by increasing the concentration of ceramic particles in the region adjacent to the heated surface using a heterogeneous single layered structure. The unfortunate by-products of such design are asymmetry about the middle surface of the structure and bending-stretching coupling. As a result, displacements and stresses increase as compared to the symmetric counterpart, while the buckling loads and natural frequencies decrease. One of the possible solutions to the problem compensating for a reduced stiffness of FGM structures is based on the replacement of one-dimensional grading with a two-dimensional grading, including the regions with enhanced stiffness. The paper illustrates the formulation of the problem and peculiarities introduced in the solution by two-dimensional grading on the example of a large aspect ratio panel subject to thermomechanical loading. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUNCTIONALLY gradient materials KW - METALS -- Thermomechanical properties KW - CERAMICS KW - BUCKLING (Mechanics) KW - PARTICLES KW - functionally graded materials KW - multi-dimensional grading KW - thermoelastic response N1 - Accession Number: 30101742; Birman, Victor 1 Chona, Ravinder 2 Byrd, Larry W. 2; Affiliation: 1: University of Missouri-Rolla, Engineering Education Center One University Boulevard, St. Louis, Missouri 63121. 2: Air Force Research Laboratory, Structural Sciences Center AFRL/VASM, Wright-Patterson Air Force Base, Ohio 45433.; Source Info: 2/15/2008, Vol. 973 Issue 1, p339; Subject Term: FUNCTIONALLY gradient materials; Subject Term: METALS -- Thermomechanical properties; Subject Term: CERAMICS; Subject Term: BUCKLING (Mechanics); Subject Term: PARTICLES; Author-Supplied Keyword: functionally graded materials; Author-Supplied Keyword: multi-dimensional grading; Author-Supplied Keyword: thermoelastic response; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; Number of Pages: 7p; Illustrations: 1 Diagram; Document Type: Article L3 - 10.1063/1.2896801 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30101742&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ellmer, Claudia AU - Adams, Douglas E. AU - White, Jonathan R. AU - Jata, Kumar T1 - Design and Operation of a Vibration-Acoustic-Thermal Apparatus for Identifying Variations in Free and Forced Response of Sandwich Panels Due to Combined Loading. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/15/ VL - 973 IS - 1 M3 - Article SP - 346 EP - 354 PB - American Institute of Physics SN - 0094243X AB - Combined vibration, thermal, and acoustic environments cause significant changes in the free and forced response characteristics of spacecraft metallic, ceramic, and carbon thermal protection systems, exhaust wash structures in fixed wing aircraft, and ground vehicle components exposed to blast loading. When structural components become damaged, the effects of combined loads are even more apparent on the structural response. A new combined vibration-acoustic-thermal apparatus designed to simultaneously expose specimens up to 4' by 4' with 10 g vibration up to either 100 Hz or 1 inch displacement vibrations, 140 dB acoustic pressures, and >400 °F temperatures will first be described in this paper. Then observations from experiments conducted on a sandwich metallic panel exposed to thermal loads will be described. Modal impact and active sensor data will be utilized to extract frequency response function models that change as a function of the loading. These frequency response models indicate significant changes in the free response properties of the panel. For example, it will be shown that temperature changes cause the resonant frequencies of the panel to decrease resulting in higher response amplitudes. Likewise, acoustic pressure loads distributed across the panel will be shown to change as a function of temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VIBRATION (Mechanics) KW - SPACE vehicles KW - CERAMICS KW - SOUND pressure KW - FREQUENCIES of oscillating systems KW - active sensing KW - carbon KW - ceramic KW - combined environments KW - damage detection KW - health monitoring KW - metallic KW - Thermal protection system N1 - Accession Number: 30101740; Ellmer, Claudia 1 Adams, Douglas E. 1 White, Jonathan R. 1 Jata, Kumar 2; Affiliation: 1: Purdue University, Ray W. Herrick Laboratories, West Lafayette, IN 47906-2031, USA. 2: Air Force Research Laboratory, Nondestructive Evaluation Branch, Materials and Manufacturing Directorate, 2230 Tenth Street, Wright Patterson AFB, OH 45433, USA.; Source Info: 2/15/2008, Vol. 973 Issue 1, p346; Subject Term: VIBRATION (Mechanics); Subject Term: SPACE vehicles; Subject Term: CERAMICS; Subject Term: SOUND pressure; Subject Term: FREQUENCIES of oscillating systems; Author-Supplied Keyword: active sensing; Author-Supplied Keyword: carbon; Author-Supplied Keyword: ceramic; Author-Supplied Keyword: combined environments; Author-Supplied Keyword: damage detection; Author-Supplied Keyword: health monitoring; Author-Supplied Keyword: metallic; Author-Supplied Keyword: Thermal protection system; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 9p; Illustrations: 1 Color Photograph, 1 Black and White Photograph, 2 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1063/1.2896803 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30101740&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ellmer, Claudia AU - Adams, Douglas E. AU - White, Jonathan R. AU - Jata, Kumar T1 - Health Monitoring for Reliability Testing of Metallic Sandwich Panels Using Integrated Active Sensing with Dual Actuator-Sensor Pairs and the Method of Virtual Forces to Identify Damage. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/15/ VL - 973 IS - 1 M3 - Article SP - 355 EP - 363 PB - American Institute of Physics SN - 0094243X AB - A vibration-based health monitoring technique is implemented to detect simulated damage in a sandwich metallic honeycomb under combined acoustic and thermal loading. Two types of damage are introduced into a gamma titanium aluminide panel; simulated oxidation damage in the form of a local mass addition and simulated bolt damage with a change in bolt torque. An active sensing approach is used to measure frequency response functions between a piezo-stack actuator with force measurement and high-frequency accelerometers. The measured frequency response function matrix is then used to estimate the virtual force due to damage. Temperatures up to 300 °F and sound pressures up to 110 dB are considered. It is shown that the measurement of damage changes with combined loading. For example, temperature changes cause bolt damage to be more apparent in the virtual force due to the effects of temperature on the attachment boundary conditions and to the temperature gradient across the panel causing global bending. Similarly, acoustic loading is shown to enhance the detection of simulated mass damage due to larger motions produced on the panel. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACCELERATED life testing KW - FREQUENCIES of oscillating systems KW - TITANIUM KW - OSCILLATIONS KW - AERONAUTICAL instruments KW - AUTOMATIC control KW - active sensing KW - combined environments KW - damage detection KW - health monitoring KW - metallic KW - Thermal protection system N1 - Accession Number: 30101739; Ellmer, Claudia 1 Adams, Douglas E. 1 White, Jonathan R. 1 Jata, Kumar 2; Affiliation: 1: Purdue University, Ray W. Herrick Laboratories, West Lafayette, IN 47906-2031, USA. 2: Air Force Research Laboratory, Nondestructive Evaluation Branch, Materials and Manufacturing Directorate, 2230 Tenth Street, Wright Patterson AFB, OH 45433, USA.; Source Info: 2/15/2008, Vol. 973 Issue 1, p355; Subject Term: ACCELERATED life testing; Subject Term: FREQUENCIES of oscillating systems; Subject Term: TITANIUM; Subject Term: OSCILLATIONS; Subject Term: AERONAUTICAL instruments; Subject Term: AUTOMATIC control; Author-Supplied Keyword: active sensing; Author-Supplied Keyword: combined environments; Author-Supplied Keyword: damage detection; Author-Supplied Keyword: health monitoring; Author-Supplied Keyword: metallic; Author-Supplied Keyword: Thermal protection system; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 9p; Illustrations: 1 Black and White Photograph, 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1063/1.2896804 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30101739&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Byrd, Larry W. AU - Birman, Victor T1 - Vibrations of Damaged Functionally Graded Cantilever Beams. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/15/ VL - 973 IS - 1 M3 - Article SP - 364 EP - 370 PB - American Institute of Physics SN - 0094243X AB - The paper discusses closed-form solutions of the problems of free and forced vibrations of a functionally graded cantilever FGM beam with and without damage. The mode of damage considered in the paper is represented by cracks that are perpendicular to the axis of the beam. Notably, such mode of damage was observed in experiments on representative FGM beams. Forced vibrations considered in the paper were generated by a kinematic excitation of the clamped end of the beam. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUNCTIONALLY gradient materials KW - CANTILEVERS KW - CONCRETE beams -- Fatigue KW - STRUCTURAL design KW - CONCRETE -- Cracking KW - KINEMATICS KW - cracks KW - damage KW - Functionally graded beam KW - vibrations N1 - Accession Number: 30101738; Byrd, Larry W. 1 Birman, Victor 2; Affiliation: 1: Air Force Research Laboratory, Structural Sciences Center AFRL/VASM, Wright-Patterson Air Force Base, Ohio 45433. 2: University of Missouri-Rolla, Engineering Education Center One University Boulevard, St. Louis, Missouri 63121.; Source Info: 2/15/2008, Vol. 973 Issue 1, p364; Subject Term: FUNCTIONALLY gradient materials; Subject Term: CANTILEVERS; Subject Term: CONCRETE beams -- Fatigue; Subject Term: STRUCTURAL design; Subject Term: CONCRETE -- Cracking; Subject Term: KINEMATICS; Author-Supplied Keyword: cracks; Author-Supplied Keyword: damage; Author-Supplied Keyword: Functionally graded beam; Author-Supplied Keyword: vibrations; Number of Pages: 7p; Illustrations: 1 Color Photograph, 2 Diagrams, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.2896805 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30101738&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Birman, Victor AU - Byrd, Larry W. T1 - Methodology for Selection of Optimum Light Stringers in Functionally Graded Panels Designed for Prescribed Fundamental Frequency or Buckling Load. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/15/ VL - 973 IS - 1 M3 - Article SP - 371 EP - 376 PB - American Institute of Physics SN - 0094243X AB - The interest to functionally graded materials (FGM) and structures has been generated by their potential advantages, including enhanced thermal properties, reduced or eliminated delamination concerns, a potential for an improved stress distribution, etc. Various aspects of the processing, design, micromechanics and analysis of FGM have been outlined in a number of reviews, mentioned here are [1–3]. In particular, functionally graded panels may be advantageous compared to their conventional counterparts in numerous applications. However, a typical FGM panel is asymmetric about its middle plane resulting in lower buckling loads and fundamental frequencies as well as higher stresses and deformations than the counterpart with a symmetric distribution of the same constituents. The reduced stiffness of FGM panels can be compensated by reinforcing them with stringers. For example, metallic stringers at the metal-rich surface of a FGM ceramic-metal panel may provide an efficient solution enabling a designer to increase both buckling loads as well as natural frequencies. The list of studies on optimization of FGM is extensive as could be anticipated for such tailored structural elements. For example, recent papers by Batra and his collaborators present optimization of the natural frequencies of a FGM plate through material grading [4] and through the graded fiber orientation [5]. The present paper is concerned with an optimum design of the system of stringers for a specified FGM panel. The task is to design the lightest system of stringers enabling the panel to achieve prescribed buckling loads or fundamental frequency. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUNCTIONALLY gradient materials KW - STRESS concentration KW - BUCKLING (Mechanics) KW - THERMAL properties KW - MICROMECHANICS KW - buckling KW - functionally graded material KW - optimized stiffened panel KW - vibration N1 - Accession Number: 30101737; Birman, Victor 1 Byrd, Larry W. 2; Affiliation: 1: University of Missouri-Rolla, Engineering Education Center, One University Boulevard, St. Louis, Missouri 63121. 2: Air Force Research Laboratory, Structural Sciences Center, AFRL/VASM, Wright-Patterson Air Force Base, Ohio 45433.; Source Info: 2/15/2008, Vol. 973 Issue 1, p371; Subject Term: FUNCTIONALLY gradient materials; Subject Term: STRESS concentration; Subject Term: BUCKLING (Mechanics); Subject Term: THERMAL properties; Subject Term: MICROMECHANICS; Author-Supplied Keyword: buckling; Author-Supplied Keyword: functionally graded material; Author-Supplied Keyword: optimized stiffened panel; Author-Supplied Keyword: vibration; Number of Pages: 6p; Illustrations: 1 Diagram, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.2896806 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30101737&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reuter, R. T1 - Bending Properties of Functionally Graded Ti/TiB. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/15/ VL - 973 IS - 1 M3 - Article SP - 383 EP - 390 PB - American Institute of Physics SN - 0094243X AB - Titanium-TiB functionally graded specimens were characterized under static and quasi-static bending loads. In some instances, the specimen configuration was also inverted to capture both the tensile and compressive behaviors of the commercially pure titanium and the Ti/TiB layers. Strain values were gathered from multiple acquisition systems including resistance strain gauging, digital image correlation, and fiber optic gauging. Values were compared to linear FEM results at an applied load of 5 K lbs. It was found that when loaded with the Ti in tension, the beam structure was successfully reinforced. On the contrary, when the ceramic composite was loaded in tension, the beam was bound by the rupture strength of the ceramic composite. Also, when comparing linear FEM results to the measurement techniques, the results are fairly accurate in quantifying the bending tests. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM KW - FUNCTIONALLY gradient materials KW - FIBER optics KW - BUILDING materials KW - CERAMICS KW - Bending KW - FGM KW - Ti-TiB N1 - Accession Number: 30101735; Reuter, R. 1; Affiliation: 1: Air Vehicles Directorate, Air Force Research Laboratory, WPAFB, OH 45433.; Source Info: 2/15/2008, Vol. 973 Issue 1, p383; Subject Term: TITANIUM; Subject Term: FUNCTIONALLY gradient materials; Subject Term: FIBER optics; Subject Term: BUILDING materials; Subject Term: CERAMICS; Author-Supplied Keyword: Bending; Author-Supplied Keyword: FGM; Author-Supplied Keyword: Ti-TiB; NAICS/Industry Codes: 416390 Other specialty-line building supplies merchant wholesalers; NAICS/Industry Codes: 444190 Other Building Material Dealers; NAICS/Industry Codes: 423390 Other Construction Material Merchant Wholesalers; NAICS/Industry Codes: 416310 General-line building supplies merchant wholesalers; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 8p; Illustrations: 3 Color Photographs, 4 Black and White Photographs, 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.2896808 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30101735&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Byrd, Larry AU - Wyen, Travis AU - Byrd, Alex T1 - Thermoelastic Analysis of a Vibrating TiB/Ti Cantilever Beam Using Differential Thermography. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/15/ VL - 973 IS - 1 M3 - Article SP - 397 EP - 402 PB - American Institute of Physics SN - 0094243X AB - Differential thermography has been used to detect the fluctuating temperatures due the thermoelastic effect for a number of years. This paper examines functionally graded TiB/Ti cantilever beams excited on an electromechanical shaker in fully reversed bending. Finite difference analysis of specimens was used to look at the effect of heat conduction, convection and the fundamental frequency on the surface temperature distribution and compared to experimental data. The thermoelastic effect was also used to detect cracking and the stress field at the tip of the fixture during fatigue [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOELASTIC stress analysis KW - THERMOGRAPHY KW - MATERIALS -- Fatigue KW - HEAT conduction KW - NUMERICAL analysis KW - FINITE differences KW - differential thermography KW - Thermoelastic KW - TiB/Ti functionally graded N1 - Accession Number: 30101733; Byrd, Larry 1 Wyen, Travis 1 Byrd, Alex 1; Affiliation: 1: Air Force Research Laboratory, Structural Sciences Center Wright-Patterson Air Force Base, OH 45433.; Source Info: 2/15/2008, Vol. 973 Issue 1, p397; Subject Term: THERMOELASTIC stress analysis; Subject Term: THERMOGRAPHY; Subject Term: MATERIALS -- Fatigue; Subject Term: HEAT conduction; Subject Term: NUMERICAL analysis; Subject Term: FINITE differences; Author-Supplied Keyword: differential thermography; Author-Supplied Keyword: Thermoelastic; Author-Supplied Keyword: TiB/Ti functionally graded; Number of Pages: 6p; Illustrations: 1 Color Photograph, 2 Diagrams, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.2896810 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30101733&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Byrd, Larry AU - Beberniss, Tim AU - Chapman, Ben AU - Cooley, Glenn AU - Feie, John T1 - Dynamic Response of Layered TiB/Ti Functionally Graded Material Specimens. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/15/ VL - 973 IS - 1 M3 - Article SP - 403 EP - 409 PB - American Institute of Physics SN - 0094243X AB - This paper covers the dynamic response of rectangular (25.4×101.6×3.175 mm) specimens manufactured from layers of TiB/Ti. The layers contained volume fractions of TiB that varied from 0 to 85% and thus formed a functionally graded material. Witness samples of the 85% TiB material were also tested to provide a baseline for the statistical variability of the test techniques. Static and dynamic tests were performed to determine the in situ material properties and fundamental frequencies. Damping in the material/ fixture was also found from the dynamic response. These tests were simulated using composite beam theory which gave an analytical solution, and using finite element analysis. The response of the 85% TiB specimens was found to be much more uniform than the functionally graded material and the dynamic response more uniform than the static response. A least squares analysis of the data using the analytical solutions were used to determine the elastic modulus and Poisson's ratio of each layer. These results were used to model the response in the finite element analysis. The results indicate that current analytical and numerical methods for modeling the material give similar and adequate predictions for natural frequencies if the measured property values were used. The models did not agree as well if the properties from the manufacturer or those of Hill and Linn were used. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUNCTIONALLY gradient materials KW - DYNAMIC testing KW - COMPOSITE construction KW - FINITE element method KW - POISSON'S ratio KW - damping KW - Dynamic testing KW - functionally graded materials N1 - Accession Number: 30101730; Byrd, Larry 1 Beberniss, Tim 1 Chapman, Ben 1 Cooley, Glenn 1 Feie, John 1; Affiliation: 1: Air Force Research Laboratory, Structural Sciences Center Wright-Patterson AFB, OH 45433.; Source Info: 2/15/2008, Vol. 973 Issue 1, p403; Subject Term: FUNCTIONALLY gradient materials; Subject Term: DYNAMIC testing; Subject Term: COMPOSITE construction; Subject Term: FINITE element method; Subject Term: POISSON'S ratio; Author-Supplied Keyword: damping; Author-Supplied Keyword: Dynamic testing; Author-Supplied Keyword: functionally graded materials; Number of Pages: 7p; Illustrations: 2 Diagrams, 8 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.2896813 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30101730&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tuegel, Eric J. AU - Byrd, Larry W. AU - Beberniss, Timothy J. T1 - Prediction of Dynamic Response for Ti/TiB Functionally Graded Beams. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2008/02/15/ VL - 973 IS - 1 M3 - Article SP - 416 EP - 422 PB - American Institute of Physics SN - 0094243X AB - Functionally graded ceramic-metal materials are candidates for use in aerospace structures that are exposed to high temperatures. These structures will experience other demands such as significant pressure fluctuations that will cause panels to vibrate at high frequencies. These materials must be engineered for specific applications. Standard engineering methods were used to predict the response of Ti/TiB cantilever beams to quasi-static and dynamic loadings. Experiments were performed and compared to the predictions. The predictions and experiments did not agree due to significant uncertainty about the elastic modulus of TiB. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUNCTIONALLY gradient materials KW - CERAMIC materials KW - AERONAUTICS KW - HIGH temperatures KW - ENGINEERING KW - bending stiffness KW - elastic modulus KW - natural frequency KW - Ti/TiB functionally graded material N1 - Accession Number: 30101728; Tuegel, Eric J. 1 Byrd, Larry W. 1 Beberniss, Timothy J. 1; Affiliation: 1: Structural Sciences Center, Air Vehicles Directorate, U.S. Air Force Research Laboratory, 2790 D Street, Wright-Patterson Air Force Base, OH 45433, USA.; Source Info: 2/15/2008, Vol. 973 Issue 1, p416; Subject Term: FUNCTIONALLY gradient materials; Subject Term: CERAMIC materials; Subject Term: AERONAUTICS; Subject Term: HIGH temperatures; Subject Term: ENGINEERING; Author-Supplied Keyword: bending stiffness; Author-Supplied Keyword: elastic modulus; Author-Supplied Keyword: natural frequency; Author-Supplied Keyword: Ti/TiB functionally graded material; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; Number of Pages: 7p; Illustrations: 1 Diagram, 2 Charts, 1 Graph; Document Type: Article L3 - 10.1063/1.2896815 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30101728&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fair, Geoff E. AU - Kerans, Ronald J. AU - Parthasarathy, Triplicane A. T1 - Thermal history sensor based on glass-ceramics JO - Sensors & Actuators A: Physical JF - Sensors & Actuators A: Physical Y1 - 2008/02/15/ VL - 141 IS - 2 M3 - Article SP - 245 EP - 255 SN - 09244247 AB - Abstract: The degradation of mechanical properties of materials during service is strongly dependent on the history of thermal exposure resulting from thermally activated microstructural processes. This degradation can lead to catastrophic failure of engineering components; consequently, knowledge of the thermal history of a component is crucial to predicting the degradation of properties and anticipating/preventing failures. In this work, a thermal history sensor capable of operating wirelessly in severe environments has been developed which functions as much more than a thermal fuse, but less than a computer-monitored thermocouple. The sensor utilizes the thermally activated crystallization of glass-ceramics to record a thermal history fingerprint in an array of glass-ceramic substrates. Computer modeling as well as experimental results are presented as proof of concept for the sensor. Degradation state sensing as well as the effects of environmental moisture on the operation of the sensor will also be discussed. The end product will employ a pattern-matching algorithm to characterize instantly the thermal exposure by comparing to a database of thermal history fingerprints. The thermal history sensor is expected to be useful in a variety of high temperature, severe environment applications. [Copyright &y& Elsevier] AB - Copyright of Sensors & Actuators A: Physical is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DETECTORS KW - CERAMICS KW - HIGH temperatures KW - HEAT KW - Glass-ceramic KW - High temperature KW - Life prediction KW - Pattern matching KW - Sensor KW - Wireless N1 - Accession Number: 28403679; Fair, Geoff E. 1; Email Address: geoff.fair@wpafb.af.mil Kerans, Ronald J. 1 Parthasarathy, Triplicane A. 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, United States 2: UES, Inc., Dayton, OH, United States; Source Info: Feb2008, Vol. 141 Issue 2, p245; Subject Term: DETECTORS; Subject Term: CERAMICS; Subject Term: HIGH temperatures; Subject Term: HEAT; Author-Supplied Keyword: Glass-ceramic; Author-Supplied Keyword: High temperature; Author-Supplied Keyword: Life prediction; Author-Supplied Keyword: Pattern matching; Author-Supplied Keyword: Sensor; Author-Supplied Keyword: Wireless; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.sna.2007.08.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28403679&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Samir Aouadi AU - Yadab Paudel AU - Brandon Luster AU - Shane Stadler AU - Punit Kohli AU - Christopher Muratore AU - Carl Hager AU - Andrey Voevodin T1 - Adaptive Mo2N/MoS2/Ag Tribological Nanocomposite Coatings for Aerospace Applications. JO - Tribology Letters JF - Tribology Letters Y1 - 2008/02/11/ VL - 29 IS - 2 M3 - Article SP - 95 EP - 103 SN - 10238883 AB - Abstract  Reactively sputtered Mo2N/MoS2/Ag nanocomposite coatings were deposited from three individual Mo, MoS2, and Ag targets in a nitrogen environment onto Si (111), 440C grade stainless steel, and inconel 600 substrates. The power to the Mo target was kept constant, while power to the MoS2 and Ag targets was varied to obtain different coating compositions. The coatings consisted of Mo2N, with silver and/or sulfur additions of up to approximately 24 at%. Coating chemistry and crystal structure were evaluated using X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD), which showed the presence of tetragonal Mo2N and cubic Ag phases. The MoS2 phase was detected from XPS analysis and was likely present as an amorphous inclusion based on the absence of characteristic XRD peaks. The tribological properties of the coatings were investigated in dry sliding at room temperature against Si3N4, 440C stainless steel, and Al2O3. Tribological testing was also conducted at 350 and 600 °C against Si3N4. The coatings and respective wear tracks were examined using scanning electron microscopy (SEM), optical microscopy, profilometry, energy dispersive X-ray spectroscopy (EDX), and micro-Raman spectroscopy. During room temperature tests, the coefficients of friction (CoF) were relatively high (0.5–1.0) for all coating compositions, and particularly high against Si3N4 counterfaces. During high-temperature tests, the CoF of single-phase Mo2N coatings remained high, but much lower CoFs were observed for composite coatings with both Ag and S additions. CoF values were maintained as low as 0.1 over 10,000 cycles for samples with Ag content in excess of 16 at% and with sulfur content in the 5–14 at% range. The chemistry and phase analysis of coating contact surfaces showed temperature-adaptive behavior with the formation of metallic silver at 350 °C and silver molybdate compounds at 600 °C tests. These adaptive Mo2N/MoS2/Ag coatings exhibited wear rates that were two orders of magnitude lower compared to Mo2N and Mo2N/Ag coatings, hence providing a high potential for lubrication and wear prevention of high-temperature sliding contacts. [ABSTRACT FROM AUTHOR] AB - Copyright of Tribology Letters is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - X-ray spectroscopy KW - ELECTRON spectroscopy KW - INCONEL KW - PHOTOELECTRICITY N1 - Accession Number: 28384713; Samir Aouadi 1 Yadab Paudel 1 Brandon Luster 1 Shane Stadler 1 Punit Kohli 2 Christopher Muratore 3 Carl Hager 3 Andrey Voevodin 3; Affiliation: 1: Southern Illinois University Department of Physics Carbondale IL 62901 USA 2: Southern Illinois University Department of Chemistry Carbondale IL 62901 USA 3: Materials and Manufacturing Directorate, Wright-Patterson Air Force Base Air Force Research Laboratory Dayton OH 45433 USA; Source Info: Feb2008, Vol. 29 Issue 2, p95; Subject Term: X-ray spectroscopy; Subject Term: ELECTRON spectroscopy; Subject Term: INCONEL; Subject Term: PHOTOELECTRICITY; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28384713&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Idesman, A.V. AU - Schmidt, M. AU - Sierakowski, R.L. T1 - A new explicit predictor–multicorrector high-order accurate method for linear elastodynamics JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2008/02/05/ VL - 310 IS - 1/2 M3 - Article SP - 217 EP - 229 SN - 0022460X AB - Abstract: A new explicit predictor–multicorrector high-order accurate method is suggested for linear elastodynamics. The method is derived from the implicit high-order accurate method based on the time-continuous Galerkin method proposed earlier in our papers. The basic unknowns for the method are displacements and velocities; accelerations are not calculated. The explicit method uses a predictor–multicorrector technique with one or two passes in order to reach the fourth order of accuracy and has controllable numerical dissipation for the suppression of spurious high-frequency oscillations. In contrast to recently suggested explicit high-order accurate methods based on the time-discontinuous Galerkin method, the new method is more accurate (has a higher order of accuracy) and has better algorithmic properties (e.g., a higher-stability limit) at the same computational efforts. Presented numerical examples show the performance of the new method. The method appears to be competitive for medium- and long-term analysis when accuracy of numerical solutions arises an issue due to error accumulation. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALERKIN methods KW - STREAMFLOW velocity KW - ENERGY dissipation KW - FREQUENCIES of oscillating systems KW - ELASTOPLASTICITY KW - SUBSTITUTION reactions N1 - Accession Number: 27688499; Idesman, A.V. 1; Email Address: alexander.idesman@coe.ttu.edu Schmidt, M. 2 Sierakowski, R.L. 2; Affiliation: 1: Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409-1021, USA 2: Air Force Research Laboratory, Munitions Directorate, Eglin Air Force Base, FL 32542, USA; Source Info: Feb2008, Vol. 310 Issue 1/2, p217; Subject Term: GALERKIN methods; Subject Term: STREAMFLOW velocity; Subject Term: ENERGY dissipation; Subject Term: FREQUENCIES of oscillating systems; Subject Term: ELASTOPLASTICITY; Subject Term: SUBSTITUTION reactions; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.jsv.2007.07.052 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27688499&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Nesterov, Vladimir N. AU - Zakharov, Lev N. AU - Sarkisov, Sergey S. AU - Curley, Michael J. AU - Urbas, Augustine T1 - 3,5-Bis{3-[4-(dimethylamino)phenyl]prop-2-enylidene}-1-methyl-4-piperidone and 3,5-bis[3-(4-methoxyphenyl)prop-2-enylidene]-1-methyl-4-piperidone: potential biophotonic materials. JO - Acta Crystallographica: Section C (Wiley-Blackwell) JF - Acta Crystallographica: Section C (Wiley-Blackwell) Y1 - 2008/02// VL - 64 IS - 2 M3 - Other SP - o73 EP - o75 SN - 01082701 AB - The structures of the title compounds, C28H33N3O, (I), and C26H27NO3, (II), together with their two-photon absorption properties and fluorescence activities are reported. Molecules of (II) reside on crystallographic mirror planes containing the piperidone C=O group and N-methyl H atoms. Because of the conjugation between the donor and acceptor parts, the central heterocycle in both (I) and (II) exhibits a flattened boat conformation, with deviations of the N atom and the opposite C atom from the planar fragment. The dihedral angles between the coplanar heterocyclic atoms and terminal C6 rings are less than 20° in both (I) and (II). In (I), the N-methyl group of the ring occupies an equatorial position, but in (II) it is positioned in an axial site. In the crystal structure of (I), weak intermolecular C—H...π(arene) and C—H...O steric contacts link the molecules along the a axis. In the crystal structure of (II), molecules form stacks along the b axis. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Crystallographica: Section C (Wiley-Blackwell) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL structure KW - FLUORESCENCE KW - RADIOACTIVITY KW - INTERMOLECULAR forces KW - CHEMICAL bonds N1 - Accession Number: 28832483; Nesterov, Vladimir N. 1; Email Address: vnesterov@nmhu.edu Zakharov, Lev N. 2 Sarkisov, Sergey S. 3 Curley, Michael J. 4 Urbas, Augustine 5; Affiliation: 1: Department of Natural Sciences, New Mexico Highlands University, Las Vegas, NM 87701, USA. 2: Department of Chemistry, University of Oregon, Eugene, OR 97403, USA. 3: SSS Optical Technologies, LLC, 515 Sparkman Drive, Suite 122, Huntsville, Alabama 35816, USA. 4: Department of Physics, Alabama A&M University, Normal, Alabama 35762, USA. 5: Air Force Research Laboratory/MLPJ, 3005 Hobson Way Building 651, Wright Patterson Air Force Base, Ohio 45433-7702, USA.; Source Info: Feb2008, Vol. 64 Issue 2, po73; Subject Term: CHEMICAL structure; Subject Term: FLUORESCENCE; Subject Term: RADIOACTIVITY; Subject Term: INTERMOLECULAR forces; Subject Term: CHEMICAL bonds; Number of Pages: 1p; Document Type: Other L3 - 10.1107/S0108270107067741 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28832483&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Degnan, James H. AU - Amdahl, David J. AU - Brown, Aaron AU - Cavazos, Thomas AU - Coffey, Sean K. AU - Domonkos, Matthew T. AU - Frese, Michael H. AU - Frese, Sherry D. AU - Gale, Donald G. AU - Grabowski, Theodore C. AU - Intrator, Thomas P. AU - Kirkpatrick, Ronald C. AU - Kiuttu, Gerald F. AU - Lehr, Frederick M. AU - Letterio, James D. AU - Parker, Jerald V. AU - Peterkin Jr, Robert E. AU - Roderick, Norman F. AU - Ruden, Edward L. AU - Siemon, Richard E. T1 - Experimental and Computational Progress on Liner Implosions for Compression of FRCs. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2008/02//Feb2008 Part 1 of 2 VL - 36 IS - 1 M3 - Article SP - 80 EP - 91 SN - 00933813 AB - Magnetized target fusion (MTF) is a means to com- press plasmas to fusion conditions that uses magnetic fields to greatly reduce electron thermal conduction, thereby greatly reducing compression power density requirements. The compression is achieved by imploding the boundary, a metal shell. This effort pursues formation of the field-reversed configuration (FRC) type of magnetized plasma, and implosion of the metal shell by means of magnetic pressure from a high current flowing through the shell. We reported previously on experiments demonstrating that we can use magnetic pressure from high current capacitor discharges to implode long cylindrical metal shells (liners) with size, symmetry, implosion velocity, and overall performance suitable for compression of FRCs. We also presented considerations of using deformable liner-electrode contacts of Z-pinch geometry liners or theta pinch-driven liners, in order to have axial access to inject FRCs and to have axial diagnostic access. Since then, we have experimentally implemented the Z-pinch discharge driven deformable liner-electrode contact, obtained full axial coverage radiography of such a liner implosion, and obtained 2 ½ dimensional MHD simulations for a variety of profiled thickness long cylindrical liners. The radiographic results indicate that at least 16 times radial compression of the inner surface of a 0.11-cm-thick Al liner was achieved, with a symmetric implosion, free of instability growth in the plane of the symmetry axis. We have also made progress in combining 2 ½-D MHD simulations of FRC formation with imploding liner compression of FRCs. These indicate that capture of the injected FRC by the imploding liner can be achieved with suitable relative timing of the FRC formation and liner implosion discharges. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPHEROMAKS KW - MAGNETIC fields KW - PINCH effect (Physics) KW - STELLARATORS KW - REVERSED field pinches KW - ELECTROSTATIC accelerators KW - MAGNETIC flux compression KW - PLASMA (Ionized gases) KW - FUSION reactors KW - Field-reversed configuration KW - liner implosion KW - magnetized plasma compression KW - magnetized target fusion N1 - Accession Number: 31320554; Degnan, James H. 1; Email Address: james.degnan@kirtland.af.mil Amdahl, David J. 2 Brown, Aaron 2 Cavazos, Thomas 3 Coffey, Sean K. 2 Domonkos, Matthew T. 1 Frese, Michael H. 2 Frese, Sherry D. 2 Gale, Donald G. 3 Grabowski, Theodore C. 3 Intrator, Thomas P. 4 Kirkpatrick, Ronald C. 4 Kiuttu, Gerald F. 5 Lehr, Frederick M. 1 Letterio, James D. 1 Parker, Jerald V. 3 Peterkin Jr, Robert E. 3 Roderick, Norman F. 6 Ruden, Edward L. 1 Siemon, Richard E. 7; Affiliation: 1: Air Force Research Laboratory, Kirtland AFB, NM 87117 USA 2: NumerEx, Albuquerque, NM 87106 USA 3: SAIC, Albuquerque, NM 87110 USA 4: Los Alamos National Laboratory, Los Alamos, NM 87545 USA 5: VariTech Services, Albuquerque, NM 87110 USA 6: University of New Mexico, Albuquerque, NM 87131 USA 7: University of Nevada, Reno, NV 89557 USA; Source Info: Feb2008 Part 1 of 2, Vol. 36 Issue 1, p80; Subject Term: SPHEROMAKS; Subject Term: MAGNETIC fields; Subject Term: PINCH effect (Physics); Subject Term: STELLARATORS; Subject Term: REVERSED field pinches; Subject Term: ELECTROSTATIC accelerators; Subject Term: MAGNETIC flux compression; Subject Term: PLASMA (Ionized gases); Subject Term: FUSION reactors; Author-Supplied Keyword: Field-reversed configuration; Author-Supplied Keyword: liner implosion; Author-Supplied Keyword: magnetized plasma compression; Author-Supplied Keyword: magnetized target fusion; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; Number of Pages: 12p; Illustrations: 11 Diagrams, 2 Charts; Document Type: Article L3 - 10.1109/TPS.2007.913814 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31320554&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Turchi, Peter J. AU - Roderick, Norman F. AU - Degnan, James H. AU - Frese, Michael H. AU - Amdahl, David J. T1 - Preparation and Liner Compression of Plasma From an Ultrahigh Speed Flow. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2008/02//Feb2008 Part 1 of 2 VL - 36 IS - 1 M3 - Article SP - 92 EP - 103 SN - 00933813 AB - Preparation of the target plasma represents a critical issue in liner compression techniques to achieve fusion conditions. We consider the use of an ultrahigh speed plasma flow from a special coaxial-gun arrangement known as the plasma flow switch. Experiments have demonstrated that this arrangement can provide plasma flows with speeds in excess of 2000 km/s. Stagnation of such a plasma flow results in fully stripped aluminum plasma with electron temperatures of 30 keV. Substitution of deuterium or a deuterium-tritium mixture could provide target plasma at kilovolt temperatures within an imploding liner. Such temperatures suggest that, even if substantial heat loss occurred during liner compression, fusion-level temperatures would be possible. The concatenation of events to generate the ultrahigh speed flow, to direct it into the implosion chamber, and to arrange liner dynamics for effective compression demands numerical simulation, which is based on initial analytical estimates. Both types of calculation for exploring this concept are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONTROLLED fusion KW - PLASMA dynamics KW - PULSED power systems KW - ALUMINUM KW - MECHANICS (Physics) KW - STATICS KW - COAXIAL cables KW - ELECTRONS KW - TEMPERATURE KW - Controlled fusion KW - imploding liners KW - plasma dynamics KW - pulsed-power N1 - Accession Number: 31320555; Turchi, Peter J. 1; Email Address: turchi@lanl.gov Roderick, Norman F. 2 Degnan, James H. 3 Frese, Michael H. 4 Amdahl, David J. 4; Affiliation: 1: Los Alamos National Laboratory, Los Alamos, NM 87545 USA 2: Department of Chemical and Nuclear Engineering, University of New Mexico, Albuquerque, NM 87131 USA 3: Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, NM 87117 USA 4: NumerEx, Albuquerque, NM 87106 USA; Source Info: Feb2008 Part 1 of 2, Vol. 36 Issue 1, p92; Subject Term: CONTROLLED fusion; Subject Term: PLASMA dynamics; Subject Term: PULSED power systems; Subject Term: ALUMINUM; Subject Term: MECHANICS (Physics); Subject Term: STATICS; Subject Term: COAXIAL cables; Subject Term: ELECTRONS; Subject Term: TEMPERATURE; Author-Supplied Keyword: Controlled fusion; Author-Supplied Keyword: imploding liners; Author-Supplied Keyword: plasma dynamics; Author-Supplied Keyword: pulsed-power; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 335929 Other Communication and Energy Wire Manufacturing; NAICS/Industry Codes: 335920 Communication and energy wire and cable manufacturing; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; Number of Pages: 12p; Illustrations: 15 Diagrams; Document Type: Article L3 - 10.1109/TPS.2007.914169 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31320555&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hall, Richard B. T1 - Combined thermodynamics approach for anisotropic, finite deformation overstress models of viscoplasticity JO - International Journal of Engineering Science JF - International Journal of Engineering Science Y1 - 2008/02// VL - 46 IS - 2 M3 - Article SP - 119 EP - 130 SN - 00207225 AB - Abstract: An anisotropic finite deformation thermodynamic framework is developed that admits most of the models within the class of unified viscoplasticity approaches, applying to representations of the behaviors of polymers, metals and their composites. The importance of changing natural configurations as a driver for dissipation is emphasized, as is the specification of constitutive behaviors via the energy and dissipation functions. In a sequential application of thermodynamic approaches, Caratheodory’s lemma is first applied to establish traditional potential relations for the stress and entropy, followed by application of the Coleman–Noll approach to deduce that evolution functions related to the rates of the independent variables must be associated with reversible, non-dissipative changes. The principal of maximum dissipation is lastly applied to deduce the flow rule, identify dissipative behaviors, and deduce interrelationships between the independently-specified energy and dissipation functions. A simplified case is described that illustrates these interrelationships and their compatibilities with the proposed framework. [Copyright &y& Elsevier] AB - Copyright of International Journal of Engineering Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANISOTROPY KW - VISCOPLASTICITY KW - POLYMERS KW - METALS KW - Anisotropic KW - Finite deformation KW - Overstress KW - Thermodynamics KW - Viscoplasticity N1 - Accession Number: 27933812; Hall, Richard B. 1; Email Address: Richard.Hall@wpafb.af.mil; Affiliation: 1: Advanced Composites Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, AFRL/MLBCM Bldg 654, 2941 Hobson Way rm 136, Wright-Patterson AFB, OH 45433-7750, United States; Source Info: Feb2008, Vol. 46 Issue 2, p119; Subject Term: ANISOTROPY; Subject Term: VISCOPLASTICITY; Subject Term: POLYMERS; Subject Term: METALS; Author-Supplied Keyword: Anisotropic; Author-Supplied Keyword: Finite deformation; Author-Supplied Keyword: Overstress; Author-Supplied Keyword: Thermodynamics; Author-Supplied Keyword: Viscoplasticity; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.ijengsci.2007.09.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27933812&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pekker, L. AU - Keidar, M. AU - Cambier, J.-L. T1 - Effect of thermal conductivity on the Knudsen layer at ablative surfaces. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/02// VL - 103 IS - 3 M3 - Article SP - 034906 PB - American Institute of Physics SN - 00218979 AB - In this article we develop an analytical model of the Knudsen layer at the ablative wall taking into account the temperature gradient in the bulk gas. The analysis is based on the premise that the temperature gradient in the bulk gas can be taken into account in the velocity distribution function at the outer boundary of the Knudsen layer. The model uses a bimodal velocity distribution function in the Knudsen layer, which preserves the laws of conservation of mass, momentum, and energy and converges to the Chapman–Enskog velocity distribution function at the outer boundary of the layer. The model is applied to polyethylene ablation, for which two cases are considered: (a) the ablation process is due to pure heat conduction to the surface, with no external heating of the ablated surface, and (b) the ablation is due to both the thermal conduction and an external heating of the surface, e.g., vaporization of a metal exposed to laser radiation. The region of validity of the existing models and effect of the temperature gradient on the Knudsen layer properties are calculated. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT -- Radiation & absorption KW - HEAT conduction KW - LASER beams KW - RADIATION KW - ABSORPTION spectra N1 - Accession Number: 30066014; Pekker, L. 1 Keidar, M. 2 Cambier, J.-L. 3; Affiliation: 1: ERC Inc., 10 East Saturn Boulevard., Edwards AFB, California 93524, 2: Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC 20052, 3: Air Force Research Laboratory, 10 East Saturn Boulevard, Edwards AFB, California 93524,; Source Info: Feb2008, Vol. 103 Issue 3, p034906; Subject Term: HEAT -- Radiation & absorption; Subject Term: HEAT conduction; Subject Term: LASER beams; Subject Term: RADIATION; Subject Term: ABSORPTION spectra; Number of Pages: 6p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.2838210 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30066014&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jian, Kengqing AU - Truong, Trung C. AU - Hoffman, Wesley P. AU - Hurt, Robert H. T1 - Mesoporous carbons with self-assembled surfaces of defined crystal orientation JO - Microporous & Mesoporous Materials JF - Microporous & Mesoporous Materials Y1 - 2008/02// VL - 108 IS - 1-3 M3 - Article SP - 143 EP - 151 SN - 13871811 AB - Abstract: The design of carbon sorbents traditionally focuses on the control of pore structure and the number and type of surface functional groups. The present paper explores the potential of also controlling the carbon crystal structure, or graphene layer orientation, in the immediate vicinity of the internal surfaces. We hypothesize that this crystal structure influences the properties of the carbon surfaces and affects the number and type of active sites for functionalization. Here a series of mesoporous carbons are fabricated by capillary infiltration of mesophase pitch (naphthalene homopolymer) into a series of controlled pore glass templates of different characteristic pore size followed by carbonization and template etching. The liquid crystalline mesogens are known to adopt perpendicular alignment (anchoring) at liquid/silica interfaces, which after carbonization lead to a high concentration of graphene edge sites at the inner surfaces. These surfaces are shown to have elevated chemical reactivity, and the pore structures are shown to be consistent with predictions of a quantitative model based on the negative replica concept. Overall, the use of mesophase pitch for templated mesoporous carbons allows systematic and simultaneous control of both pore structure and interfacial crystal structure through the well-defined rules of liquid crystal surface anchoring. [Copyright &y& Elsevier] AB - Copyright of Microporous & Mesoporous Materials is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHT sources KW - LIQUID crystals KW - CARBONIZATION KW - ORGANIC chemistry KW - Crystal structure KW - Functionalization KW - Interfacial engineering KW - Liquid crystal KW - Templating N1 - Accession Number: 27831012; Jian, Kengqing 1 Truong, Trung C. 1 Hoffman, Wesley P. 2 Hurt, Robert H. 1; Email Address: Robert_Hurt@brown.edu; Affiliation: 1: Brown University, Division of Engineering and Department of Chemistry, Providence, RI 02912, United States 2: Air Force Research Laboratory, AFRL/PRSM, Edwards, CA 93524, United States; Source Info: Feb2008, Vol. 108 Issue 1-3, p143; Subject Term: LIGHT sources; Subject Term: LIQUID crystals; Subject Term: CARBONIZATION; Subject Term: ORGANIC chemistry; Author-Supplied Keyword: Crystal structure; Author-Supplied Keyword: Functionalization; Author-Supplied Keyword: Interfacial engineering; Author-Supplied Keyword: Liquid crystal; Author-Supplied Keyword: Templating; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.micromeso.2007.04.055 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27831012&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhenning Yu AU - Fossum, Eric AU - Wang, David H. AU - Loon-Seng Tan T1 - Alternative Approach to an AB2 Monomer for Hyperbranched Poly(Arylene Ether Ketone Imide)s. JO - Synthetic Communications JF - Synthetic Communications Y1 - 2008/02// VL - 38 IS - 3 M3 - Article SP - 419 EP - 427 PB - Taylor & Francis Ltd SN - 00397911 AB - An alternative approach to an AB2 monomer, N-[3,5-bis(4-hydroxybenzoyl)benzene]-4-fluorophthalimde, 4, for hyperbranched poly(arylene ether ketone imide)s has been developed. The key steps were a para-position selective electrophilic aromatic substitution of fluorobenzene with 5-nitroisophthaloyl dichloride and a subsequent clean conversion of the aryl fluorides to phenol groups using potassium hydroxide as the nucleophile. The overall yield for the synthesis of 4 was 51.6%. [ABSTRACT FROM AUTHOR] AB - Copyright of Synthetic Communications is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONOMERS KW - CHEMICALS KW - BENZENE KW - KETONES KW - IMIDES KW - FLUORIDES KW - branched polymer KW - monomers KW - selectivity N1 - Accession Number: 28674280; Zhenning Yu 1 Fossum, Eric 1; Email Address: eric.fossum@wright.edu Wang, David H. 2 Loon-Seng Tan 3; Affiliation: 1: Department of Chemistry, Wright State University, Dayton, Ohio, USA 2: University of Dayton Research Institute, Dayton, Ohio, USA 3: Polymer Branch, Materials and Manufacturing Directorate, AFRL/MLBP, Air Force Research Laboratory, Manufacturing Technology Directorate, Dayton, Ohio, USA; Source Info: 2008, Vol. 38 Issue 3, p419; Subject Term: MONOMERS; Subject Term: CHEMICALS; Subject Term: BENZENE; Subject Term: KETONES; Subject Term: IMIDES; Subject Term: FLUORIDES; Author-Supplied Keyword: branched polymer; Author-Supplied Keyword: monomers; Author-Supplied Keyword: selectivity; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 9p; Illustrations: 2 Diagrams; Document Type: Article L3 - 10.1080/00397910701771157 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28674280&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vaia, Richard AU - Baur, Jetfery T1 - Adaptive Composites. JO - Science JF - Science Y1 - 2008/01/25/ VL - 319 IS - 5862 M3 - Article SP - 420 EP - 421 SN - 00368075 AB - The article focuses on the concepts of developing composite materials that can respond dynamically to changes in their environment. It relates that advance passive material technologies, such as continuous-fiber organic-matrix composites have revolutionized applications from sporting equipment and prosthetics to satellite and aircrafts. It mentions that new multicomponent, hierarchical material systems are inspired by biology, such as a cell's ability to change shape and recover from large deformations arises in part from the arrangement of actin filaments in the cellular cytoplasm, which can be created from cellular materials, bistable composites laminates and bimorph strips. KW - COMPOSITE materials KW - COMPOSITE construction KW - FUNCTIONALLY gradient materials KW - LAMINATED materials KW - BIMORPHS KW - ACTIN KW - MATERIALS KW - BIOLOGY KW - LIFE sciences N1 - Accession Number: 30046792; Vaia, Richard 1; Email Address: richard.vaia@wpafb.af.mil Baur, Jetfery 1; Email Address: jeffery.baur@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright- Patterson Air Force Base, OH 45433, USA; Source Info: 1/25/2008, Vol. 319 Issue 5862, p420; Subject Term: COMPOSITE materials; Subject Term: COMPOSITE construction; Subject Term: FUNCTIONALLY gradient materials; Subject Term: LAMINATED materials; Subject Term: BIMORPHS; Subject Term: ACTIN; Subject Term: MATERIALS; Subject Term: BIOLOGY; Subject Term: LIFE sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 2p; Illustrations: 1 Color Photograph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30046792&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Duran, Hatice AU - Meng, Scott AU - Kim, Namil AU - Hu, Jun AU - Kyu, Thein AU - Natarajan, Lalgudi V. AU - Tondiglia, Vincent P. AU - Bunning, Timothy J. T1 - Kinetics of photopolymerization-induced phase separation and morphology development in mixtures of a nematic liquid crystal and multifunctional acrylate JO - Polymer JF - Polymer Y1 - 2008/01/21/ VL - 49 IS - 2 M3 - Article SP - 534 EP - 545 SN - 00323861 AB - Abstract: Photopolymerization behavior and reaction kinetics for a series of multifunctional acrylate monomer(s) and eutectic liquid crystal blends were investigated with particular emphasis on determination of the reaction rate coefficients for propagation and termination steps of photopolymerization. Reaction rate coefficients were determined via real-time infrared spectroscopy and compared with those obtained by photo-differential scanning calorimetry. Effects of various parameters such as LC concentration, light intensity, and monomer functionality on the kinetics were investigated. Phase transition temperature versus composition phase diagrams were established by means of optical microscopy and differential scanning calorimetry for mixtures of triacrylate/liquid crystal (LC) before photopolymerization and after exposing to ultra violet (UV) irradiation under various reaction times. The snapshot phase diagram of the reacting mixtures exhibited isotropic gel, isotropic liquid+nematic, and narrow pure nematic coexistence regions. These coexistence regions were further confirmed by morphological changes of the polymer dispersed liquid crystal films as functions of temperature and concentration using polarized optical microscopy. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOPOLYMERIZATION KW - DYNAMICS KW - LIQUID crystals KW - POLYMERIZATION KW - INFRARED spectroscopy KW - LIQUID crystal displays KW - Photopolymerization-induced phase separation KW - Photoreaction kinetics KW - Real-time morphology development N1 - Accession Number: 28398817; Duran, Hatice 1 Meng, Scott 1 Kim, Namil 1 Hu, Jun 2 Kyu, Thein 1; Email Address: tkyu@uakron.edu Natarajan, Lalgudi V. 3 Tondiglia, Vincent P. 3 Bunning, Timothy J. 4; Affiliation: 1: Department of Polymer Engineering, University of Akron, Akron, OH 44325-0301, United States 2: Department of Chemistry, University of Akron, Akron, OH 44325-3601, United States 3: Science Applications International Corporation, Dayton, OH 45431, United States 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright–Patterson Air Force Base, OH 45433, United States; Source Info: Jan2008, Vol. 49 Issue 2, p534; Subject Term: PHOTOPOLYMERIZATION; Subject Term: DYNAMICS; Subject Term: LIQUID crystals; Subject Term: POLYMERIZATION; Subject Term: INFRARED spectroscopy; Subject Term: LIQUID crystal displays; Author-Supplied Keyword: Photopolymerization-induced phase separation; Author-Supplied Keyword: Photoreaction kinetics; Author-Supplied Keyword: Real-time morphology development; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.polymer.2007.11.039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28398817&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hui Li AU - Boatz, Jerry A. AU - Gordon, Mark S. T1 - Cation-Cation π-π Stacking in Small Ionic Clusters of 1,2,4-Triazolium. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2008/01/16/ VL - 130 IS - 2 M3 - Article SP - 392 EP - 393 SN - 00027863 AB - The article presents a research which discusses the idea that cation-cation stacking structures can be formed between two 1,2,4-triazolium cations in small clusters. Results revealed that the stacking structures of cations can exist in very small ionic clusters. Researchers found that the structure motifs and interaction patterns offer new understanding about ionic materials with aromatic rings. KW - CHEMICAL research KW - CATIONS KW - IONIC structure KW - CHEMICAL reactions KW - AROMATICITY (Chemistry) KW - PHYSICAL & theoretical chemistry N1 - Accession Number: 29343074; Hui Li 1 Boatz, Jerry A. 2 Gordon, Mark S. 3; Email Address: mark@si.msg.chem.iastate.edu; Affiliation: 1: Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588 2: Air Force Research Laboratory, Space and Missile Propulsion Division, AFRL/PRS, 10 East Saturn Boulevard, Edwards AFB, California 93524 3: Department of Chemistry, Iowa State University, Ames, Iowa 50011; Source Info: 1/16/2008, Vol. 130 Issue 2, p392; Subject Term: CHEMICAL research; Subject Term: CATIONS; Subject Term: IONIC structure; Subject Term: CHEMICAL reactions; Subject Term: AROMATICITY (Chemistry); Subject Term: PHYSICAL & theoretical chemistry; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; Number of Pages: 2p; Illustrations: 2 Diagrams; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=29343074&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dente, G. C. AU - Tilton, M. L. AU - Ongstad, A. P. AU - Kaspi, R. T1 - Wavelength tuning predictions and experiments for type II antimonide lasers. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/01/15/ VL - 103 IS - 2 M3 - Article SP - 023106 PB - American Institute of Physics SN - 00218979 AB - After a review of pseudopotential models for superlattices, we use the superlattice empirical pseudopotential method to predict the wavelength tuning of type II antimonide lasers. We then compare the predictions with a large set of experimental data on a series of optically pumped lasers operating from 2.2 to 9.2 μm. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - ANTIMONY KW - QUANTUM wells KW - INDIUM arsenide KW - LASERS -- Industrial applications KW - PSEUDOPOTENTIAL method N1 - Accession Number: 28844035; Dente, G. C. 1 Tilton, M. L. 2 Ongstad, A. P. 3 Kaspi, R. 3; Affiliation: 1: GCD Associates, Albuquerque, New Mexico 87110, 2: Boeing LTS, Albuquerque, New Mexico 87185, 3: Air Force Research Laboratory, Albuquerque, New Mexico 87117,; Source Info: Jan2008, Vol. 103 Issue 2, p023106; Subject Term: SUPERLATTICES; Subject Term: ANTIMONY; Subject Term: QUANTUM wells; Subject Term: INDIUM arsenide; Subject Term: LASERS -- Industrial applications; Subject Term: PSEUDOPOTENTIAL method; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 4p; Illustrations: 1 Chart, 1 Graph; Document Type: Article L3 - 10.1063/1.2836785 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28844035&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cetiner, S. O. AU - Stoltz, P. AU - Messmer, P. AU - Cambier, J.-L. T1 - Dependence of electron peak current on hollow cathode dimensions and seed electron energy in a pseudospark discharge. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/01/15/ VL - 103 IS - 2 M3 - Article SP - 023304 PB - American Institute of Physics SN - 00218979 AB - The prebreakdown and breakdown phases of a pseudospark discharge are investigated using the two-dimensional kinetic plasma simulation code OOPIC™ PRO. Trends in the peak electron current at the anode are presented as function of the hollow cathode dimensions and mean seed injection velocities at the cavity back wall. The plasma generation process by ionizing collisions is examined, showing the effect on supplying the electrons that determine the density of the beam. The mean seed velocities used here are varied between the velocity corresponding to the energy of peak ionization cross section, 15 times this value and no mean velocity (i.e., electrons injected with a temperature of 2.5 eV). The reliance of the discharge characteristics on the penetrating electric field is shown to decrease as the mean seed injection velocity increases because of its ability to generate a surplus plasma independent of the virtual anode. As a result, the peak current increases with the hollow cathode dimensions for the largest average injection velocity, while for the smallest value it increases with the area of penetration of the electric field in the hollow cathode interior. Additionally, for a given geometry an increase in the peak current with the surplus plasma generated is observed. For the largest seed injection velocity used a dependence of the magnitude of the peak current on the ratio of the hole thickness and hollow cathode depth to the hole height is demonstrated. This means similar trends of the peak current are generated when the geometry is resized. Although the present study uses argon only, the variation in the discharge dependencies with the seed injection energy relative to the ionization threshold is expected to apply independently of the gas type. Secondary electrons due to electron and ion impact are shown to be important only for the largest impact areas and discharge development times of the study. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC fields KW - IONIZATION (Atomic physics) KW - GLOW discharges KW - PARTICLES (Nuclear physics) KW - ARGON plasmas KW - PLASMA (Ionized gases) N1 - Accession Number: 28844098; Cetiner, S. O. 1 Stoltz, P. 1 Messmer, P. 1 Cambier, J.-L. 2; Affiliation: 1: Tech-X Corp., 5621 Arapaohe Ave., Suite A, Boulder, Colorado 80303, 2: Air Force Research Laboratory, AFRL/PRSA, Edwards AFB, California 93524,; Source Info: Jan2008, Vol. 103 Issue 2, p023304; Subject Term: ELECTRIC fields; Subject Term: IONIZATION (Atomic physics); Subject Term: GLOW discharges; Subject Term: PARTICLES (Nuclear physics); Subject Term: ARGON plasmas; Subject Term: PLASMA (Ionized gases); Number of Pages: 9p; Illustrations: 1 Diagram, 21 Graphs; Document Type: Article L3 - 10.1063/1.2832507 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28844098&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Voevodin, A. A. AU - Jones, J. G. AU - Zabinski, J. S. AU - Waite, A. R. T1 - Plasma interactions in ion beam assisted pulsed laser deposition of Al-O-N films. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/01/15/ VL - 103 IS - 2 M3 - Article SP - 024902 PB - American Institute of Physics SN - 00218979 AB - Interactions between plasmas produced by a nitrogen ion beam source and the pulsed laser ablation of an Al2O3 target were studied for the growth of Al-O-N films. Plasma fluxes from both sources were intersected on the substrate surface in a typical arrangement for ion beam assisted pulsed laser deposition (IBPLD). Plasma emission imaging and spectroscopic analyses were performed in real time, using laser pulses for analysis synchronization while varying the N2 background pressure in the range from 0.08 to 4 Pa. This study was focused on the detection of temporal and spatial plasma distributions, excitation states, and chemical reactions during the IBPLD process which were not present when operating each of the plasma sources separately. Two significant plasma interaction effects were discovered. One was the production of atomic N and O in the near-substrate region, resulting in the formation of NO molecules which then reacted with Al to form Al-O-N. Another was the formation of short-lived plasma channels connecting ion beam and laser-ablated plasmas, which was observed in the 2–4 Pa pressure regime. These channels resulted in plasma bending and shifting from the substrate surface and affected film composition. These findings suggest that the interaction of ion beam and laser ablation plumes in IBPLD might considerably affect plasma chemistry, excitation states, and spatial distribution, thus providing opportunities for the control of deposited film properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ION bombardment KW - LASER ablation KW - PULSED laser deposition KW - ALUMINUM oxide KW - SEMICONDUCTORS -- Plasma effects N1 - Accession Number: 28844118; Voevodin, A. A. 1 Jones, J. G. 1 Zabinski, J. S. 1 Waite, A. R. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433-7750,; Source Info: Jan2008, Vol. 103 Issue 2, p024902; Subject Term: ION bombardment; Subject Term: LASER ablation; Subject Term: PULSED laser deposition; Subject Term: ALUMINUM oxide; Subject Term: SEMICONDUCTORS -- Plasma effects; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 6p; Illustrations: 3 Diagrams, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.2832504 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28844118&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Sukesh AU - Kinnius, Paul J. AU - Lucht, Robert P. AU - Gord, James R. T1 - Temperature measurements in reacting flows by time-resolved femtosecond coherent anti-Stokes Raman scattering (fs-CARS) spectroscopy JO - Optics Communications JF - Optics Communications Y1 - 2008/01/15/ VL - 281 IS - 2 M3 - Article SP - 319 EP - 325 SN - 00304018 AB - Abstract: Time-resolved femtosecond coherent anti-Stokes Raman scattering (fs-CARS) spectroscopy of the nitrogen molecule is used for the measurement of temperature in atmospheric-pressure, near-adiabatic, hydrogen-air diffusion flames. The initial frequency-spread dephasing rate of the Raman coherence induced by the ultrafast (∼85fs) Stokes and pump beams is used as a measure of gas-phase temperature. This initial frequency-spread dephasing rate of the Raman coherence is completely independent of collisions and depends only on the frequency spread of the Raman transitions at different temperatures. A simple theoretical model based on the assumption of impulsive excitation of Raman coherence is used to extract temperatures from time-resolved fs-CARS experimental signals. The extracted temperatures from fs-CARS signals are in excellent agreement with the theoretical temperatures calculated from an adiabatic equilibrium calculation. The estimated absolute accuracy and the precision of the measurement technique are found to be ±40K and ±50K, respectively, over the temperature range 1500–2500K. [Copyright &y& Elsevier] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TEMPERATURE measurements KW - RAMAN effect KW - SPECTRUM analysis KW - QUALITATIVE chemical analysis N1 - Accession Number: 27668502; Roy, Sukesh 1; Email Address: sroy@woh.rr.com Kinnius, Paul J. 2 Lucht, Robert P. 2 Gord, James R. 3; Affiliation: 1: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, OH 45440, United States 2: School of Mechanical Engineering, Purdue University, 585 Purdue Mall, West Lafayette, IN 47907, United States 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, OH 45433, United States; Source Info: Jan2008, Vol. 281 Issue 2, p319; Subject Term: TEMPERATURE measurements; Subject Term: RAMAN effect; Subject Term: SPECTRUM analysis; Subject Term: QUALITATIVE chemical analysis; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.optcom.2007.09.040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27668502&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Soto, Armando AU - DelRaso, Nicholas J. AU - Schlager, John J. AU - Chan, Victor T. T1 - d-Serine exposure resulted in gene expression changes indicative of activation of fibrogenic pathways and down-regulation of energy metabolism and oxidative stress response JO - Toxicology JF - Toxicology Y1 - 2008/01/14/ VL - 243 IS - 1/2 M3 - Article SP - 177 EP - 192 SN - 0300483X AB - Abstract: Renal toxicity can commonly occur after exposure to xenobiotics, pharmaceutical agents or environmental pollutants. Changes in the gene expression in kidney parenchymal cells that precede and/or accompany renal injury may be hallmark critical events in the onset of pathologic changes of renal functions. Over the last several years, transcriptomic analysis has evolved to enable simultaneous analysis of the expression profiles of tens of thousands of genes in response to various endogenous and exogenous stimuli. In this study, we investigated gene expression changes in the kidney after acute exposure to a nephrotoxin, d-serine, which targets the proximal tubule of the kidney. Male F-344 rats injected intraperitoneally with a single dose of d-serine (5, 20, 50, 200 or 500mg/kg), and gene expression profiles in the kidney were determined using the Affymetrix RAE230A gene arrays at 96h post-dosing. d-Serine treatment resulted in the up- and down-regulation of 1158 and 749 genes, respectively, over the entire dose range based on the intersection of the results of t-test, p <0.01 over two consecutive doses, and ANOVA with Bonferonni correction for multiple testing. Interestingly, both the up-and down-regulated genes show a unified dose response pattern as revealed in the self-organized map clustering analysis using the expression profiles of the 1907 differentially expressed genes as input data. There appears to be minimal changes in the expression level of these genes in the dose range of 5–50mg/kg, while the most prominent changes were observed at the highest doses tested, i.e. 200 and 500mg/kg. Pathway analysis of the differentially expressed genes showed perturbation of a large number of biological processes/pathways after d-serine exposure. Among the up-regulated pathways are actin cytoskeleton biogenesis and organization, apoptosis, cell cycle regulation, chromatin assembly, excision repair of damaged DNA, DNA replication and packaging, protein biosynthesis, metabolism and transport, inflammatory response, proteasome-mediated degradation of oxidatively damaged cytosolic proteins, Ras protein signal transduction, TGF-beta signaling pathway and mRNA transcription, processing, splicing and transport. On the other hand, major metabolic pathways, which include carbohydrate metabolism, TCA cycle, oxidative phosphorylation, ATP synthesis coupled electron transport, amino acid metabolism and transport, lipid metabolism, nucleotide metabolism, and vitamin metabolism, and oxidative stress response including induction of antioxidant genes and glutathione metabolism are down-regulated. As tubular epithelia have strong energy demand for normal functions, down-regulation of energy metabolism after d-serine treatment may be related to the mechanism of its nephrotoxicity. In addition, hydrogen peroxide, a reactive oxygen species, is produced as a byproduct of the metabolism of d-serine by d-amino acid oxidase in the peroxisomes of the tubular epithelia. Down-regulation of pathways for antioxidant genes induction and glutathione metabolism will likely exacerbate the cytotoxicity of this reactive oxygen species. The observation that the genes involved in apoptosis, DNA repair, proteasome pathway for the degradation of oxidatively damaged cytosolic proteins were up-regulated lends some supports to this premise. Up-regulation of pathways of cell proliferation cycle, DNA replication and gene expression process, including mRNA transcription, processing, splicing, transport, translation initiation, and protein transport along with protein complex assembly, suggests ongoing tissue repair and regeneration. Consistent with the fibrogenic function of the TGF-beta signaling pathway in various experimental renal diseases, genes encoding major extracellular matrix components such as collagens, laminins, fibronectin 1 and tenascins are also strongly up-regulated. Taken together, the results of this study provide important insights into the molecular mechanism of d-serine nephrotoxicity, as well as the activation of specific cellular pathways in response to this toxic insult. [Copyright &y& Elsevier] AB - Copyright of Toxicology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AMINO acids KW - GENES KW - GENE expression KW - GENETIC regulation KW - Biological interaction network KW - d-Serine treatment KW - Pathway analysis KW - Renal injury KW - Transcriptomic profiling N1 - Accession Number: 27942157; Soto, Armando 1; Email Address: Armando.Soto@wpafb.af.mil DelRaso, Nicholas J. 1; Email Address: Nicholas.DelRaso@wpafb.af.mil Schlager, John J. 1; Email Address: John.Schlager@wpafb.af.mil Chan, Victor T.; Email Address: Victor.Chan@wpafb.af.mil; Affiliation: 1: Applied Biotechnology Branch, Division of Biosciences and Protection, Human Effectiveness Directorate, Air Force Research Laboratory, 2729 R Street, Area B, Building 837, Wright Patterson Air Force Base, Dayton, OH 45433-5707, USA; Source Info: Jan2008, Vol. 243 Issue 1/2, p177; Subject Term: AMINO acids; Subject Term: GENES; Subject Term: GENE expression; Subject Term: GENETIC regulation; Author-Supplied Keyword: Biological interaction network; Author-Supplied Keyword: d-Serine treatment; Author-Supplied Keyword: Pathway analysis; Author-Supplied Keyword: Renal injury; Author-Supplied Keyword: Transcriptomic profiling; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.tox.2007.10.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27942157&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rico E. Del Sesto AU - T. Mark McCleskey AU - Anthony K. Burrell AU - Gary A. Baker AU - Joe D. Thompson AU - Brian L. Scott AU - John S. Wilkes AU - Peg Williams T1 - Structure and magnetic behavior of transition metal based ionic liquids. JO - Chemical Communications JF - Chemical Communications Y1 - 2008/01/10/ VL - 2008 IS - 4 M3 - Article SP - 447 EP - 449 SN - 13597345 AB - A series of ionic liquids containing different paramagnetic anions have been prepared and all show paramagnetic behavior with potential applications for magnetic and electrochromic switching as well as novel magnetic transport; also, the tetraalkylphosphonium-based ionic liquids reveal anomalous magnetic behavior. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemical Communications is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONIC liquids KW - TRANSITION metals KW - MAGNETIC materials KW - ANIONS N1 - Accession Number: 28384006; Rico E. Del Sesto 1 T. Mark McCleskey 1 Anthony K. Burrell 1 Gary A. Baker 2 Joe D. Thompson 3 Brian L. Scott 1 John S. Wilkes 4 Peg Williams 4; Affiliation: 1: Materials Chemistry, MPA-MC, Los Alamos National Laboratory Los Alamos USA ricod@lanl.gov 2: Chemical Sciences Division, Oak Ridge National Laboratory Oak Ridge USA 3: Condensed Matter and Thermal Physics, MPA-10, Los Alamos National Laboratory Los Alamos USA 4: Department of Chemistry, United States Air Force Academy USAFA USA; Source Info: Jan2008, Vol. 2008 Issue 4, p447; Subject Term: IONIC liquids; Subject Term: TRANSITION metals; Subject Term: MAGNETIC materials; Subject Term: ANIONS; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28384006&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ahmad, Gul AU - Dickerson, Matthew B. AU - Cai, Ye AU - Jones, Sharon E. AU - Ernst, Eric M. AU - Vernon, Jonathan P. AU - Haluska, Michael S. AU - Yunnan Fang AU - Jiadong Wang AU - Subramanyam, Guru AU - Naik, Rajesh A. AU - Sandhage, Kenneth H. T1 - Rapid Bioenabled Formation of Ferroelectric BaTiO3 at Room Temperature from an Aqueous Salt Solution at Near Neutral pH. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2008/01/09/ VL - 130 IS - 1 M3 - Article SP - 4 EP - 5 SN - 00027863 AB - A study is presented that demonstrates that a phage-display-isolated peptide can induce the room-temperature formation of tetragonal barium metatitanate (BaTiO3) from an aqueous precursor solution at near neutral hydrogen-ion concentration. The ability of peptides to promote the rapid formation of functional crystalline multicomponent ceramics under ambient conditions has been demonstrated in the results, and creates opportunities for the integration of low-temperature materials. KW - FERROELECTRICITY KW - BARIUM metatitanate KW - PEPTIDES KW - LOW temperatures KW - SALTWATER solutions KW - HYDROGEN-ion concentration N1 - Accession Number: 28771247; Ahmad, Gul 1 Dickerson, Matthew B. 1 Cai, Ye 1 Jones, Sharon E. 2 Ernst, Eric M. 1 Vernon, Jonathan P. 1 Haluska, Michael S. 1 Yunnan Fang 1 Jiadong Wang 3 Subramanyam, Guru 3 Naik, Rajesh A. 2 Sandhage, Kenneth H. 1; Email Address: ken.sandhage@mse.gatech.edu; Affiliation: 1: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245 2: Nanostructured and Biological Materials Branch, Air Force Research Laboratory, AFRL/RXBP, Wright-Patterson Air Force Base, Ohio 45433-7702 3: Department of Electrical and Computer Engineering, University of Dayton, Dayton, Ohio 45469-0232; Source Info: 1/9/2008, Vol. 130 Issue 1, p4; Subject Term: FERROELECTRICITY; Subject Term: BARIUM metatitanate; Subject Term: PEPTIDES; Subject Term: LOW temperatures; Subject Term: SALTWATER solutions; Subject Term: HYDROGEN-ion concentration; Number of Pages: 2p; Illustrations: 1 Diagram, 1 Chart, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28771247&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Leever, B. J. AU - Durstock, M. F. AU - Irwin, M. D. AU - Hains, A. W. AU - Marks, T. J. AU - Pingree, L. S. C. AU - Hersam, M. C. T1 - Spatially resolved photocurrent mapping of operating organic photovoltaic devices using atomic force photovoltaic microscopy. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2008/01/07/ VL - 92 IS - 1 M3 - Article SP - 013302 PB - American Institute of Physics SN - 00036951 AB - A conductive atomic force microscopy (cAFM) technique, atomic force photovoltaic microscopy (AFPM), has been developed to characterize spatially localized inhomogeneities in organic photovoltaic (OPV) devices. In AFPM, a biased cAFM probe is raster scanned over an array of illuminated solar cells, simultaneously generating topographic and photocurrent maps. As proof of principle, AFPM is used to characterize 7.5×7.5 μm2 poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester OPVs, revealing substantial device to device and temporal variations in the short-circuit current. The flexibility of AFPM suggests applicability to nanoscale characterization of a wide range of optoelectronically active materials and devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR cells KW - ATOMIC force microscopy KW - BUTYRIC acid KW - ORGANIC photochemistry KW - HETEROJUNCTIONS N1 - Accession Number: 28561246; Leever, B. J. 1 Durstock, M. F. 1 Irwin, M. D. 2 Hains, A. W. 2 Marks, T. J. 2 Pingree, L. S. C. 3 Hersam, M. C. 3; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433, 2: Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, 3: Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208-3108,; Source Info: 1/7/2008, Vol. 92 Issue 1, p013302; Subject Term: SOLAR cells; Subject Term: ATOMIC force microscopy; Subject Term: BUTYRIC acid; Subject Term: ORGANIC photochemistry; Subject Term: HETEROJUNCTIONS; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 3p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.2830695 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28561246&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fajardo, Mario E. AU - Lindsay, C. Michael T1 - Crystal field splitting of rovibrational transitions of water monomers isolated in solid parahydrogen. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2008/01/07/ VL - 128 IS - 1 M3 - Article SP - 014505 PB - American Institute of Physics SN - 00219606 AB - We report polarized infrared absorption spectra of water isotopologues isolated in solid parahydrogen (pH2) which reveal the crystal field induced splittings of the 101←000 R(0) lines in the ν1 HDO, ν3 D2O, ν3 HDO, and ν3 H2O fundamental bands. For annealed pH2 solids, these spectra also reveal a strong alignment of the hexagonal-close-packed crystallites’ c axes with the deposition substrate surface normal. This alignment effect explains our failure to detect the parallel-polarized components of these R(0) lines in spectra of pH2 solids produced on a transparent deposition substrate [M. E. Fajardo et al., J. Mol. Struct. 695, 111 (2004)]. This lesson applies more generally to comparison of solid pH2 spectra obtained in different laboratories. The spectra are consistent with water monomers existing in solid pH2 as very slightly hindered rotors. The individual components of the R(0) absorption lines show a Lorentzian lineshape, with vibrational depopulation the most important source of line broadening. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL field theory KW - CHEMICALS KW - SOLID state physics KW - QUALITATIVE chemical analysis KW - ELECTRIC machinery -- Rotors N1 - Accession Number: 28333193; Fajardo, Mario E. 1; Email Address: mario.fajardo@eglin.af.mil Lindsay, C. Michael 1; Affiliation: 1: Munitions Directorate, U.S. Air Force Research Laboratory, AFRL/RWME, 2306 Perimeter Road, Eglin AFB, Florida 32542-5910,; Source Info: 1/7/2008, Vol. 128 Issue 1, p014505; Subject Term: CRYSTAL field theory; Subject Term: CHEMICALS; Subject Term: SOLID state physics; Subject Term: QUALITATIVE chemical analysis; Subject Term: ELECTRIC machinery -- Rotors; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 4p; Illustrations: 1 Chart, 1 Graph; Document Type: Article L3 - 10.1063/1.2816705 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28333193&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mark McQuilling AU - Mitch Wolff AU - Sergey Fonov AU - Jim Crafton AU - Rolf Sondergaard T1 - An experimental investigation of a low-pressure turbine blade suction surface using a shear and stress sensitive film. JO - Experiments in Fluids JF - Experiments in Fluids Y1 - 2008/01/06/ VL - 44 IS - 1 M3 - Article SP - 73 EP - 88 SN - 07234864 AB - Abstract  A shear and stress sensitive film (S3F) is employed on the suction surface of an industry standard low-pressure turbine blade. These tests address the optimization of S3F for low-speed air investigations on a curved surface, and are the first measurements of its kind. S3F provides all three stress components on a surface in a single measurement, and is based on 3D elastic deformations of a polymeric film. A detailed description of the S3F technique is presented along with proof of concept experiments, followed by the turbine results which illustrate the need for separate films tailored for the local stress levels in each area. Oil–film verification of stresses is also included. [ABSTRACT FROM AUTHOR] AB - Copyright of Experiments in Fluids is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TURBINES KW - THIN films KW - STRAINS & stresses (Mechanics) KW - SURFACES (Technology) N1 - Accession Number: 27793053; Mark McQuilling 1 Mitch Wolff 1 Sergey Fonov 2 Jim Crafton 2 Rolf Sondergaard 3; Affiliation: 1: Wright State University Mechanical and Materials Engineering 3640 Colonel Glenn Hwy Dayton OH 45435 USA 2: Innovative Scientific Solutions, Inc. 2766 Indian Ripple Road Dayton OH 45440 USA 3: Turbines Branch, Propulsion Directorate, Air Force Research Laboratory 1950 Fifth St., WPAFB Dayton OH 45433 USA; Source Info: Jan2008, Vol. 44 Issue 1, p73; Subject Term: TURBINES; Subject Term: THIN films; Subject Term: STRAINS & stresses (Mechanics); Subject Term: SURFACES (Technology); NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 16p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27793053&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Semet, V. AU - Vu Thien Binh AU - Cahay, M. AU - Garre, K. AU - Fairchild, S. AU - Grazulis, L. AU - Fraser, J. W. AU - Lockwood, D. J. AU - Pramanik, S. AU - Kanchibotla, B. AU - Bandyopadhyay, S. T1 - Field Emission from Self-Assembled Arrays of Lanthanum Monosulfide Nanoprotrusions. JO - Journal of Nanomaterials JF - Journal of Nanomaterials Y1 - 2008/01/04/2008 Special Issue 3 M3 - Article SP - 1 EP - 4 SN - 16874110 AB - The field emission properties of LaS nanoprotrusions called nanodomes, formed by pulsed laser deposition on porous anodic alumina films, have been analyzed with scanning anode field emission microscopy. The voltage necessary to produce a given field emission current is ∼3.5 times less for nanodomes than for thin films. Assuming the same work function for LaS thin films and nanoprotrusions, that is, ∼1 eV, a field enhancement factor of ∼5.8 is extracted for the nanodome emitters from Fowler-Nordheim plots of the field emission data. This correlates well with the aspect ratio of the tallest nanodomes observed in atomic force micrograph measurements. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nanomaterials is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIELD emission KW - LANTHANUM KW - THIN films KW - ALUMINUM oxide KW - FIELD ion microscopy N1 - Accession Number: 36264869; Semet, V. 1 Vu Thien Binh 1 Cahay, M. 2; Email Address: marc.cahay@uc.edu Garre, K. 2 Fairchild, S. 3 Grazulis, L. 3 Fraser, J. W. 4 Lockwood, D. J. 4 Pramanik, S. 5 Kanchibotla, B. 5 Bandyopadhyay, S. 5; Affiliation: 1: Equipe Emission Electronique, LPMCN-CNRS, Universite Claude Bernard Lyon 1, 69622 Villeurbanne, France 2: Department of Electrical and Computer Engineering and Computer Science, University of Cincinnati, Cincinnati, OH 45221, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 4: Institute for Microstructural Sciences, National Research Council, Ottawa, ON, Canada K1A OR6 5: Department of Electrical and Computer Engineering, Virginia Commonwealth University, Richmond, VA 23284, USA; Source Info: 2008 Special Issue 3, p1; Subject Term: FIELD emission; Subject Term: LANTHANUM; Subject Term: THIN films; Subject Term: ALUMINUM oxide; Subject Term: FIELD ion microscopy; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 4p; Illustrations: 2 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1155/2008/682920 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36264869&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heseltine, Bruce P. T1 - Analysis: KC-135 Lean Fueling Operations. JO - Air Force Journal of Logistics JF - Air Force Journal of Logistics Y1 - 2008///Winter2008 VL - 31 IS - 4 M3 - Article SP - 29 EP - 37 PB - Superintendent of Documents SN - 0270403X AB - The article discusses the approach of using lean and just-in-time fueling processes linked with the growth of a tanker dispatch system within the U.S. Air Force Air Mobility Command. The approach would modify the KC-135 community to markedly ameliorate mission planning, applying a fixed targeted shutdown fuel quantity. It is also averred that under this approach, aircraft would be loaded with fuel required in fulfilling a given mission. KW - MILITARY planning KW - LEAN management KW - JUST-in-time systems KW - AIRPLANES -- Fuel KW - KC-135 (Tanker aircraft) KW - AIRCRAFT industry -- Military aspects KW - UNITED States N1 - Accession Number: 31425511; Heseltine, Bruce P. 1; Affiliation: 1: Executive Officer, United States Air Force Expeditionary Center, Fort Dix, New Jersey; Source Info: Winter2008, Vol. 31 Issue 4, p29; Subject Term: MILITARY planning; Subject Term: LEAN management; Subject Term: JUST-in-time systems; Subject Term: AIRPLANES -- Fuel; Subject Term: KC-135 (Tanker aircraft); Subject Term: AIRCRAFT industry -- Military aspects; Subject Term: UNITED States; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 9p; Illustrations: 1 Color Photograph, 5 Charts, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31425511&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lyons, Joseph B. AU - Stokes, Charlene AU - Palumbo, Mark AU - Boyle, Edward AU - Seyba, Jason AU - Ames, David T1 - Bringing Logistics into the Laboratory: Developing a Team-Based Logistics Task. JO - Air Force Journal of Logistics JF - Air Force Journal of Logistics Y1 - 2008///Winter2008 VL - 31 IS - 4 M3 - Article SP - 49 EP - 55 PB - Superintendent of Documents SN - 0270403X AB - The article focuses on the existing military logistics collaboration in the U.S. It is averred that research in collaboration science is significant as organizations enforce team-based systems. It is inferred that computer-based aerial port simulation (CAPS) software will permit researchers to survey logistics collaboration in controlled settings that abridges the effects of impertinent variables. KW - LOGISTICS KW - COLLECTIVE action KW - COMPUTER software KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 31425513; Lyons, Joseph B. 1 Stokes, Charlene 1 Palumbo, Mark 2 Boyle, Edward 3 Seyba, Jason 4 Ames, David 5; Affiliation: 1: Logistics Readiness Branch, Air Force Research Laboratory at Wright-Patterson Air Force Base, Ohio 2: Assistant Professor at the University of Indiana of Pennsylvania. 3: Supervisory Research Psychologist and Certified Professional Logistician for the Air Force Research Laboratory, Wright-Patterson AFB, Ohio 4: Support Engineer at Wright-Patterson Air Force Base, Ohio. 5: Software Engineer for CACI MLT Systems Inc; Source Info: Winter2008, Vol. 31 Issue 4, p49; Subject Term: LOGISTICS; Subject Term: COLLECTIVE action; Subject Term: COMPUTER software; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; NAICS/Industry Codes: 928110 National Security; Number of Pages: 7p; Illustrations: 2 Color Photographs, 2 Illustrations, 2 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31425513&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Loftis, Amanda D. AU - Mixson, Tonya R. AU - Stromdahl, Ellen Y. AU - Yabsley, Michael J. AU - Garrison, Laurel E. AU - Williamson, Phillip C. AU - Fitak, Robert R. AU - Fuerst, Paul A. AU - Kelly, Daryl J. AU - Blount, Keith W. T1 - Geographic distribution and genetic diversity of the Ehrlichia sp. from Panola Mountain in Amblyomma americanum. JO - BMC Infectious Diseases JF - BMC Infectious Diseases Y1 - 2008/01// VL - 8 IS - 1 M3 - Article SP - 1 EP - 7 PB - BioMed Central SN - 14712334 AB - Background: A novel Ehrlichia, closely related to Ehrlichia ruminantium, was recently discovered from Panola Mountain State Park, GA, USA. We conducted a study to determine if this agent was recently introduced into the United States. Methods: We developed a sensitive PCR assay based on the conserved gltA (citrate synthase) gene and tested DNA samples extracted from 1964 field-collected and 1835 human-biting Amblyomma americanum from 23 eastern states of the USA. Results: The novel agent was detected in 36 ticks collected from 10 states between 1998 and 2006. Infected ticks were collected both from vegetation (n = 14, 0.7%) and from humans (n = 22, 1.2%). Fragments of the conserved gltA gene and the variable map1 gene were sequenced from positive samples. Two distinct clades, with 10.5% nucleic acid divergence over the 730 bp map1 sequence, were identified. Conclusion: These data suggest that the Panola Mountain Ehrlichia was not recently introduced to the United States; this agent has an extensive distribution throughout the range of its tick vector, has been present in some locations for several years, and displays genetic variability. Furthermore, people in several states were exposed to this agent through the bite of infected ticks, underscoring the potential public health risk of this emerging ehrlichiosis. [ABSTRACT FROM AUTHOR] AB - Copyright of BMC Infectious Diseases is the property of BioMed Central and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EHRLICHIA KW - AMBLYOMMA KW - GENE mapping KW - EHRLICHIOSIS KW - PANOLA Mountain (Ga.) KW - GEORGIA N1 - Accession Number: 35709519; Loftis, Amanda D. 1; Email Address: adloftis@gmail.com Mixson, Tonya R. 1; Email Address: zdy0@cdc.gov Stromdahl, Ellen Y. 2; Email Address: ellen.stromdahl@us.army.mil Yabsley, Michael J. 3,4; Email Address: myabsley@vet.uga.edu Garrison, Laurel E. 5; Email Address: legarrison@dhr.state.ga.us Williamson, Phillip C. 6; Email Address: phwilliam@hsc.unt.edu Fitak, Robert R. 7; Email Address: fitak.2@osu.edu Fuerst, Paul A. 7; Email Address: fuerst.1@osu.edu Kelly, Daryl J. 7; Email Address: kelly.350@osu.edu Blount, Keith W. 8; Email Address: keith.blount@brooks.af.mil; Affiliation: 1: Centers for Disease Control and Prevention, Atlanta, GA 30333, USA 2: U.S. Army Center for Health Promotion and Preventive Medicine, Entomological Sciences Program, Aberdeen Proving Ground, MD 21010-5403, USA 3: Daniel B. Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA 30602, USA 4: Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA 5: Georgia Division of Public Health, Atlanta, GA 30303-3186, USA 6: DNA/Identity Laboratory, Department of Pathology and Human Identification, University of North Texas Health Science Center, Ft. Worth, TX 76107-2699, USA 7: Department of Evolution, Ecology and Organismal Biology, The Ohio State University, Columbus, OH 43210-1293, USA 8: Air Force Research Laboratory, Brooks City-Base, TX 78235, USA and 9266 N. Lincoln St., Laramie, WY 82070, USA; Source Info: 2008, Vol. 8 Issue 1, Special section p1; Subject Term: EHRLICHIA; Subject Term: AMBLYOMMA; Subject Term: GENE mapping; Subject Term: EHRLICHIOSIS; Subject Term: PANOLA Mountain (Ga.); Subject Term: GEORGIA; Number of Pages: 7p; Illustrations: 1 Diagram, 3 Charts, 1 Map; Document Type: Article L3 - 10.1186/1471-2334-8-54 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=35709519&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jaramillo-Henao, Carlos A. AU - Kempel, Leo C. AU - Schneider, Stephen W. T1 - Simulation of Microstrip Leaky-Wave Antennas on Inhomogeneous Substrates Using Transverse Resonance and Finite Element Methods. JO - Electromagnetics JF - Electromagnetics Y1 - 2008/01//Jan-Mar2008 VL - 28 IS - 1/2 M3 - Article SP - 27 EP - 41 PB - Taylor & Francis Ltd SN - 02726343 AB - Microstrip leaky-wave antennas offer the potential for wide-bandwidth, thin-profile apertures, albeit with the potential disadvantage of beam steering with respect to operating frequency. These antennas have been extensively studied in the past; however, previously published results have utilized homogeneous substrates. In this article, a substrate with transverse step inhomogeneous layers is investigated with two methods: the transverse resonance method (TRM) and the finite element-boundary integral (FE-BI) method. In this article, the former is generalized for N-layers and used to determine the leaky-wave mode propagating characteristics. Antennas designed using this approach are then simulated using the finite element method to determine the radiation pattern. [ABSTRACT FROM AUTHOR] AB - Copyright of Electromagnetics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRIP antennas KW - RESONANCE KW - FINITE element method KW - SHEAR waves KW - ANTENNA radiation patterns KW - finite element-boundary integral KW - inhomogeneous substrate KW - leaky wave N1 - Accession Number: 30024383; Jaramillo-Henao, Carlos A. 1 Kempel, Leo C. 1,2; Email Address: kempel@egr.msu.edu Schneider, Stephen W. 2; Affiliation: 1: Michigan State University, East Lansing, Michigan, USA. 2: Air Force Research Laboratory Sensor's Directorate, Wright-Patterson AFB, Ohio, USA.; Source Info: Jan-Mar2008, Vol. 28 Issue 1/2, p27; Subject Term: MICROSTRIP antennas; Subject Term: RESONANCE; Subject Term: FINITE element method; Subject Term: SHEAR waves; Subject Term: ANTENNA radiation patterns; Author-Supplied Keyword: finite element-boundary integral; Author-Supplied Keyword: inhomogeneous substrate; Author-Supplied Keyword: leaky wave; Number of Pages: 15p; Illustrations: 1 Black and White Photograph, 6 Diagrams, 10 Graphs; Document Type: Article L3 - 10.1080/02726340701817974 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30024383&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Qun Lin AU - Yuri Kim AU - Alarcon, Rodolfo M. AU - Zhong Yun T1 - Oxygen and Cell Fate Decisions. JO - Gene Regulation & Systems Biology JF - Gene Regulation & Systems Biology Y1 - 2008/01// IS - 2 M3 - Article SP - 43 EP - 51 SN - 11776250 AB - Molecular oxygen has been known to play a critical role in a wide range of biological processes including glycolysis, mitochondrial respiration, angiogenesis, pulmonary functions, and cardiovascular activities. An emerging theme has developed in recent years that oxygen has significant impact on embryonic development, maintenance of stem cells, and cellular differentiation or cell fate decisions. Among the notable observations, early embryonic development takes place in a hypoxic microenvironment. Hematopoietic stem cells appear to be located in hypoxic regions within the bone marrow. Majority of the current observations have shown that hypoxia seems to prevent cellular differentiation and to maintain pluripotency of stem/progenitor cells. Genetic studies have demonstrated a critical role of hypoxia-inducible factors 1α and 2α in embryonic development. These intriguing observations demonstrate an important role of molecular oxygen in such fundamental biological processes as stem cell maintenance and regulation of cell fate decisions. Herein, we describe some of the latest advances in the biology of molecular oxygen and provide our perspectives on the potential impact of these interesting findings. [ABSTRACT FROM AUTHOR] AB - Copyright of Gene Regulation & Systems Biology is the property of Libertas Academica Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXYGEN KW - GLYCOLYSIS KW - RESPIRATION KW - NEOVASCULARIZATION KW - STEM cells KW - CELL differentiation KW - adipogenesis KW - chondrogenesis KW - differentiation KW - hypoxia KW - myogenesis KW - oxygen KW - placenta KW - preadipocytes KW - progenitor cells KW - stem cells KW - trophoblasts N1 - Accession Number: 43278350; Qun Lin 1 Yuri Kim 1 Alarcon, Rodolfo M. 2 Zhong Yun 1; Email Address: zhong.yun@yale.edu; Affiliation: 1: Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT 06520, U.S.A. 2: Air Force Research Laboratory, Brooks City-Base, Texas 78235-5107, U.S.A.; Source Info: 2008, Issue 2, p43; Subject Term: OXYGEN; Subject Term: GLYCOLYSIS; Subject Term: RESPIRATION; Subject Term: NEOVASCULARIZATION; Subject Term: STEM cells; Subject Term: CELL differentiation; Author-Supplied Keyword: adipogenesis; Author-Supplied Keyword: chondrogenesis; Author-Supplied Keyword: differentiation; Author-Supplied Keyword: hypoxia; Author-Supplied Keyword: myogenesis; Author-Supplied Keyword: oxygen; Author-Supplied Keyword: placenta; Author-Supplied Keyword: preadipocytes; Author-Supplied Keyword: progenitor cells; Author-Supplied Keyword: stem cells; Author-Supplied Keyword: trophoblasts; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43278350&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eismann, Michael T. AU - Meola, Joseph AU - Hardie, Russell C. T1 - Hyperspectral Change Detection in the Presence of Diurnal and Seasonal Variations. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2008/01// VL - 46 IS - 1 M3 - Article SP - 237 EP - 249 SN - 01962892 AB - Hyperspectral change detection has been shown to be a promising approach for detecting subtle targets in complex backgrounds. Reported change-detection methods are typically based on linear predictors that assume a space-invariant affine transformation between image pairs. Unfortunately, several physical mechanisms can lead to a significant space variance in the spectral change associated with background clutter. This may include shadowing and other illumination variations, as well as seasonal impacts on the spectral nature of the vegetation. If not properly addressed, this can lead to poor change-detection performance. This paper explores the space-varying nature of such changes through empirical measurements and investigates spectrally segmented linear predictors to accommodate these effects. Several specific algorithms are developed and applied to change imagery captured under controlled conditions, and the impacts on clutter suppression and change detection are quantified and compared. The results indicate that such techniques can provide markedly improved performance when the environmental conditions associated with the image pairs are substantially different. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMAGE analysis KW - IMAGING systems KW - SPECTRAL reflectance KW - SURFACE chemistry KW - SPATIAL systems KW - ALGORITHMS KW - DIFFERENTIAL geometry KW - LIGHTING KW - REMOTE sensing KW - Change detection KW - hyperspectral KW - image analysis KW - spectral clustering KW - target detection N1 - Accession Number: 28344043; Eismann, Michael T. 1; Email Address: michael.eismann@wpafb.af.mil Meola, Joseph 1 Hardie, Russell C. 2; Email Address: rhardie@udayton.edu; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7700 USA 2: Department of Electrical and Computer Engineering and the Electro-Optics Program, University of Dayton, Dayton, OH 45459-0226 USA; Source Info: Jan2008, Vol. 46 Issue 1, p237; Subject Term: IMAGE analysis; Subject Term: IMAGING systems; Subject Term: SPECTRAL reflectance; Subject Term: SURFACE chemistry; Subject Term: SPATIAL systems; Subject Term: ALGORITHMS; Subject Term: DIFFERENTIAL geometry; Subject Term: LIGHTING; Subject Term: REMOTE sensing; Author-Supplied Keyword: Change detection; Author-Supplied Keyword: hyperspectral; Author-Supplied Keyword: image analysis; Author-Supplied Keyword: spectral clustering; Author-Supplied Keyword: target detection; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 335129 Other Lighting Equipment Manufacturing; Number of Pages: 13p; Illustrations: 1 Black and White Photograph, 1 Diagram, 1 Chart, 1 Graph; Document Type: Article L3 - 10.1109/TGRS.2007.907973 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28344043&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wysocki, B.T. AU - Marciniak, M.A. T1 - Discrimination between electronic and optical blooming in an InSb focal-plane array under high-intensity excitation JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2008/01// VL - 51 IS - 3 M3 - Article SP - 137 EP - 145 SN - 13504495 AB - Abstract: Infrared (IR) focal-plane arrays (FPA’s) with high spatial resolution play an important role in military imaging. Image degradation through blooming of the FPA by either thermal or monochromatic sources seriously limits their effectiveness. However, little has been published discerning the phenomena responsible for this blooming. We studied the blooming effects in a 640×480 indium-antimonide (InSb) FPA with 20-μm pixel-to-pixel spacing and operated at 77K. Electronic and optical blooming from both a high-intensity blackbody source and a 4.6-μm narrow-line-width laser source was studied. A 30-μm pinhole mask was fastened directly to the FPA to achieve spatial isolation of individual pixels in order to separate the optical and electronic effects. Both sources were used to bloom the FPA with and without the mask, and images were captured and analyzed. We provide conclusive evidence that optical effects of ghosting, diffraction, and lens and housing scatter dominate, resulting in global (i.e., large area of the FPA) loss of image quality, while effects due to electronic phenomena, such as carrier-diffusion, are minimal and locally confined to on-the-order-of-one pixel. A simple model of carrier transport was constructed to provide the theoretical basis for our conclusions. [Copyright &y& Elsevier] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONICS KW - MATTER -- Properties KW - SEMICONDUCTOR doping KW - SEPARATION (Technology) KW - Blooming KW - Carrier-diffusion KW - Focal-plane array KW - FPA KW - Indium-antimonide KW - Infrared KW - InSb N1 - Accession Number: 28112957; Wysocki, B.T. 1,2 Marciniak, M.A. 1; Email Address: Michael.Marciniak@afit.edu; Affiliation: 1: Air Force Institute of Technology, Department of Engineering Physics, Wright-Patterson AFB OH 45433, USA 2: Air Force Research Laboratory, Sensors Directorate, Rome Research Site, NY 13441, USA; Source Info: Jan2008, Vol. 51 Issue 3, p137; Subject Term: ELECTRONICS; Subject Term: MATTER -- Properties; Subject Term: SEMICONDUCTOR doping; Subject Term: SEPARATION (Technology); Author-Supplied Keyword: Blooming; Author-Supplied Keyword: Carrier-diffusion; Author-Supplied Keyword: Focal-plane array; Author-Supplied Keyword: FPA; Author-Supplied Keyword: Indium-antimonide; Author-Supplied Keyword: Infrared; Author-Supplied Keyword: InSb; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.infrared.2007.08.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28112957&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patel, Mehul P. AU - Ng, T. Terry AU - Vasudevan, Srikanth AU - Corke, Thomas C. AU - Post, Martiqua L. AU - McLaughlin, Thomas E. AU - Suchomel, Charles F. T1 - Scaling Effects of an Aerodynamic Plasma Actuator. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2008/01//Jan/Feb2008 VL - 45 IS - 1 M3 - Article SP - 223 EP - 223 SN - 00218669 AB - We present experimental results to yield insight into the scalability and control effectiveness of single-dielectric-barrier- discharge plasma actuators for leading-edge separation control on airfoils. The parameters investigated are chord Reynolds number, Mach number, leading-edge radius, actuator amplitude, and unsteady frequency. This includes chord Reynolds numbers up to 1:0 x 106 and a maximum freestream speed of 60 m/s corresponding to a Mach number of 0.176. The main objective of this work is to examine the voltage requirements for the plasma actuators to reattach the flow at the leading edge of airfoils at poststall angles of attack for a range of flow parameters in order to establish scaling between laboratory and full-flight conditions. For the full range of conditions, an optimum unsteady actuator frequency f is found to minimize the actuator voltage needed to reattach the flow, such that F+ = fLsep/U∞ = 1. At the optimum frequencies, the minimum voltage required to reattach the flow is weakly dependent on chord Reynolds number and strongly dependent on the poststall angle of attack and leading-edge radius. The results indicate that the voltage required to reattach the flow scales as the square of the leading-edge radius. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCALING (Social sciences) KW - SOCIAL sciences -- Methodology KW - AERODYNAMICS KW - FLUID dynamics KW - ACTUATORS KW - AUTOMATIC control N1 - Accession Number: 29386639; Patel, Mehul P. 1 Ng, T. Terry 1 Vasudevan, Srikanth 1 Corke, Thomas C. 2 Post, Martiqua L. 3 McLaughlin, Thomas E. 3 Suchomel, Charles F. 4; Affiliation: 1: Orbital Research Inc., Cleveland, Ohio 44103-3733 2: University of Notre Dame, Notre Dame, Indiana 46556 3: U. S. Air Force Academy, Colorado Springs, Colorado 80840-6222 4: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433; Source Info: Jan/Feb2008, Vol. 45 Issue 1, p223; Subject Term: SCALING (Social sciences); Subject Term: SOCIAL sciences -- Methodology; Subject Term: AERODYNAMICS; Subject Term: FLUID dynamics; Subject Term: ACTUATORS; Subject Term: AUTOMATIC control; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; NAICS/Industry Codes: 541720 Research and Development in the Social Sciences and Humanities; Number of Pages: 1p; Document Type: Article L3 - 10.2514/1.31830 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=29386639&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reeder, Mark F. AU - Allen, Walter AU - Phillips, J. Michael AU - Dimmick, Robert T1 - Wind-Tunnel Measurements of the E-8C Modeled with and Without Winglets. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2008/01//Jan/Feb2008 VL - 45 IS - 1 M3 - Article SP - 345 EP - 345 SN - 00218669 AB - The article presents a study that performed a series of tests on a geometry that very closely matches that of the actual, existent joint surveillance target attack radar system (Joint STARS) E-8C aircraft. Both wind-tunnel testing carried out at the Air Force Institute of Technology (AFIT), as well as flight tests carried out for the E-8C are included in the study. A baseline for eventual comparisons to a reengined E-8C aircraft will be provided by these data. The flexibility offered by rapid prototyping of aircraft models, within the course of wind-tunnel testing, led to a secondary goal of this research effort. KW - FLIGHT testing KW - GEOMETRY KW - MILITARY airplanes KW - MILITARY aeronautics KW - WIND tunnel testing KW - AERODYNAMIC measurements KW - AIR Force Institute of Technology (U.S.) N1 - Accession Number: 29386645; Reeder, Mark F. 1 Allen, Walter 1 Phillips, J. Michael 2 Dimmick, Robert 3; Affiliation: 1: Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 3: Northrop Grumman Integrated Systems, Melbourne, Florida 32901; Source Info: Jan/Feb2008, Vol. 45 Issue 1, p345; Subject Term: FLIGHT testing; Subject Term: GEOMETRY; Subject Term: MILITARY airplanes; Subject Term: MILITARY aeronautics; Subject Term: WIND tunnel testing; Subject Term: AERODYNAMIC measurements; Company/Entity: AIR Force Institute of Technology (U.S.); Number of Pages: 1p; Document Type: Article L3 - 10.2514/1.34016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=29386645&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, X. AU - Pan, E. AU - Roy, A. K. T1 - A Functionally Graded Plane With a Circular Inclusion Under Uniform Antiplane Eigenstrain. JO - Journal of Applied Mechanics JF - Journal of Applied Mechanics Y1 - 2008/01// VL - 75 IS - 1 M3 - Article SP - 014501-1 EP - 014501-4 SN - 00218936 AB - The problem of a functionally graded plane with a circular inclusion under a uniform, antiplane eigenstrain is investigated, where the shear modulus varies exponentially along the x direction. By introducing a new function which satisfies the Helmholtz equation, the general solution to the original problem is derived in terms of series expansion. Numerical results are then presented which demonstrate clearly that for a functionally graded plane, the strain and stress fields inside the circular inclusion under uniform antiplane eigenstrains are intrinsically nonuniform. This phenomenon differs from the corresponding homogeneous material case where both the strain and stress fields are uniform inside the circular inclusion. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Mechanics is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - FUNCTIONS (Mathematics) KW - HELMHOLTZ equation KW - ELLIPTIC differential equations KW - DYNAMICS KW - ENGINEERING KW - antiplane deformation KW - circular inclusion KW - Eshelby eigenstrain KW - functionally graded material N1 - Accession Number: 31601352; Wang, X. 1,2 Pan, E. 1,2 Roy, A. K. 3,4; Affiliation: 1: ASME Member 2: Department of Civil Engineering and Department of Applied Mathematics, University of Akron, Akron, OH 44325-3905 3: ASME Fellow 4: Air Force Research Laboratory, AFRL/MLBCM, Bldg. 654, 2941 Hobson Way Wright-Patterson AFB, OH 45433-7750; Source Info: Jan2008, Vol. 75 Issue 1, p014501-1; Subject Term: STRAINS & stresses (Mechanics); Subject Term: FUNCTIONS (Mathematics); Subject Term: HELMHOLTZ equation; Subject Term: ELLIPTIC differential equations; Subject Term: DYNAMICS; Subject Term: ENGINEERING; Author-Supplied Keyword: antiplane deformation; Author-Supplied Keyword: circular inclusion; Author-Supplied Keyword: Eshelby eigenstrain; Author-Supplied Keyword: functionally graded material; Number of Pages: 4p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1115/1.2745391 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31601352&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shiffler, Don AU - Heidger, Susan AU - Cartwright, Keith AU - Vaia, Rich AU - Liptak, David AU - Price, Gary AU - LaCour, Matthew AU - Golby, Ken T1 - Materials characteristics and surface morphology of a cesium iodide coated carbon velvet cathode. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2008/01// VL - 103 IS - 1 M3 - Article SP - 013302 PB - American Institute of Physics SN - 00218979 AB - Cesium iodide (CsI) coated carbon fiber cathodes have shown promise as a cold cathode for microwave and x-ray devices. In particular, the cathodes have demonstrated over 1 000 000 shots lifetime at operating voltages at or in excess of 165 kV and current densities greater than 25 A/cm2. While the vacuum emission characteristics have been well studied, the materials characteristics of the cathodes themselves, particularly after operation, have received little attention. Furthermore, while researchers at University of Wisconsin have demonstrated a reduction in work function of carbon due to the CsI coating, the details of the emission mechanism remain poorly understood. This article gives results of a series of materials diagnostics investigating the cathode surface morphology as well as the changes in the carbon fiber structure with cathode shot history. We demonstrate that the cathode surface undergoes several changes in relation to the bond line along the fiber-substrate interface as well as at the fiber tips. While the exact mechanisms leading to these changes have not been determined, we offer several possible explanations for the changes, as well as the means by which these mechanisms can be ascertained. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON fibers KW - CATHODE rays KW - ELECTRODES KW - IODIDES KW - WISCONSIN N1 - Accession Number: 28528162; Shiffler, Don 1 Heidger, Susan 1 Cartwright, Keith 1 Vaia, Rich 2 Liptak, David 2 Price, Gary 2 LaCour, Matthew 3 Golby, Ken 3; Affiliation: 1: Air Force Research Laboratory, AFRL/DEHP, 3550 Aberdeen SE, Kirtland AFB, New Mexico 87117, USA 2: Air Force Research Laboratory, AFRL/MLBP, Wright-Patterson AFB, Ohio 45433, USA 3: SAIC, Inc., Albuquerque, New Mexico 87117, USA; Source Info: Jan2008, Vol. 103 Issue 1, p013302; Subject Term: CARBON fibers; Subject Term: CATHODE rays; Subject Term: ELECTRODES; Subject Term: IODIDES; Subject Term: WISCONSIN; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 6p; Illustrations: 3 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.2821152 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28528162&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heidler, Jeanne T. T1 - Andrew Jackson and the Politics of Martial Law: Nationalism, Civil Liberties, and Partisanship. JO - Journal of Military History JF - Journal of Military History Y1 - 2008/01// VL - 72 IS - 1 M3 - Book Review SP - 242 EP - 243 SN - 08993718 AB - The article reviews the book "Andrew Jackson and the Politics of Martial Law: Nationalism, Civil Liberties, and Partisanship," by Matthew Warshauer. KW - MARTIAL law KW - NONFICTION KW - WARSHAUER, Matthew KW - ANDREW Jackson & the Politics of Martial Law: Nationalism, Civil Liberties & Partisanship (Book) N1 - Accession Number: 28013594; Heidler, Jeanne T. 1; Affiliation: 1: United States Air Force Academy, Colorado Springs, Colorado; Source Info: Jan2008, Vol. 72 Issue 1, p242; Subject Term: MARTIAL law; Subject Term: NONFICTION; Reviews & Products: ANDREW Jackson & the Politics of Martial Law: Nationalism, Civil Liberties & Partisanship (Book); People: WARSHAUER, Matthew; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28013594&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bernard, Thomas E. AU - Caravello, Victor AU - Schwartz, Skai W. AU - Ashley, Candi D. T1 - WBGT Clothing Adjustment Factors for Four Clothing Ensembles and the Effects of Metabolic Demands. JO - Journal of Occupational & Environmental Hygiene JF - Journal of Occupational & Environmental Hygiene Y1 - 2008/01// VL - 5 IS - 1 M3 - Article SP - 1 EP - 5 SN - 15459624 AB - This study measured the clothing adjustment factors (CAFs) for four clothing ensembles (Cotton Coveralls, Tyvek 1427 Coveralls, NexGen Coveralls, and Tychem QC Coveralls; all coveralls were worn without hoods) against a baseline of cotton work clothes to determine whether the CAFs would be affected by the metabolic rate. Fifteen participants wore one of the five ensembles while walking on a treadmill at low, moderate, and high rates of work in an environment maintained at 50% relative humidity. A climatic chamber was used to slowly increase the level of heat stress by increasing air temperature. When the participant's core temperature reached a steady-state, the dry bulb temperature was increased. The point at which the core temperature began to increase was defined as the inflection point, and the WBGT recorded 5 min before the inflection point was the critical WBGT for each ensemble. A three-way mixed effects linear model with ensemble by metabolic rate category interactions demonstrated that the CAF did not change with metabolic rate, so CAFs can be used over a wide range of metabolic rates. The data at the moderate metabolic rate were combined with data on 14 participants from a previous study under the same conditions. The CAFs in °C WBGT were 0 for cotton coveralls, 1.0 for Tyvek 1422A, and 2.5 for NexGen. Although the value of 7.5 for Tychem QC was found, the recommendation remained at 10 to account for the effects of humidity. The standard error for the determination of WBGTcrit at 50% relative humidity was 1.60°C WBGT. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Occupational & Environmental Hygiene is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COVERALLS KW - HEAT -- Physiological effect KW - WORK clothes KW - CLOTHING & dress KW - COTTON textiles KW - HUMIDITY KW - LINEAR models (Statistics) KW - INDUSTRIAL hygiene KW - WORK environment KW - heat stress KW - metabolic rate KW - protective clothing KW - TLV N1 - Accession Number: 32092785; Bernard, Thomas E. 1; Email Address: tbernard@health.usf.edu Caravello, Victor 2 Schwartz, Skai W. 1 Ashley, Candi D. 3; Affiliation: 1: University of South Florida, College of Public Health, Tampa, Florida. 2: United States Air Force, Det 3, AFIOH/CDO, Kadena Air Base, Okinawa, Japan. 3: University of South Florida, College of Education, Tampa, Florida.; Source Info: Jan2008, Vol. 5 Issue 1, p1; Subject Term: COVERALLS; Subject Term: HEAT -- Physiological effect; Subject Term: WORK clothes; Subject Term: CLOTHING & dress; Subject Term: COTTON textiles; Subject Term: HUMIDITY; Subject Term: LINEAR models (Statistics); Subject Term: INDUSTRIAL hygiene; Subject Term: WORK environment; Author-Supplied Keyword: heat stress; Author-Supplied Keyword: metabolic rate; Author-Supplied Keyword: protective clothing; Author-Supplied Keyword: TLV; NAICS/Industry Codes: 448190 Other Clothing Stores; NAICS/Industry Codes: 448140 Family Clothing Stores; NAICS/Industry Codes: 315210 Cut and Sew Apparel Contractors; NAICS/Industry Codes: 414110 Clothing and clothing accessories merchant wholesalers; NAICS/Industry Codes: 313220 Narrow Fabric Mills and Schiffli Machine Embroidery; NAICS/Industry Codes: 448199 All other clothing stores; NAICS/Industry Codes: 315220 Men's and Boys' Cut and Sew Apparel Manufacturing; NAICS/Industry Codes: 315249 Women's and girls' cut and sew clothing manufacturing; NAICS/Industry Codes: 812332 Industrial Launderers; Number of Pages: 5p; Illustrations: 3 Charts, 2 Graphs; Document Type: Article L3 - 10.1080/15459620701732355 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32092785&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boakye, E. E. AU - Hay, R. S. AU - Mogilevsky, P. AU - Cinibulk, M. K. T1 - Two Phase Monazite/Xenotime 30LaPO4–70YPO4 Coating of Ceramic Fiber Tows. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2008/01// VL - 91 IS - 1 M3 - Article SP - 17 EP - 25 PB - Wiley-Blackwell SN - 00027820 AB - Equiaxed yttrium–lanthanum phosphate nanoparticles (Y0.7,La0.3)PO4·0.7H2O were made and used to continuously coat Nextel™ 720 fiber tows. The particles were precipitated from a mixture of yttrium and lanthanum citrate chelate and phosphoric acid (H3PO4), and characterized with differential thermal analysis and thermogravimetric analysis, X-ray diffraction, transmission electron microscopy, and scanning electron microscopy. The coated fibers were heat treated at 1000°–1300°C for 1, 10, and 100 h. Coating grain growth kinetics and coated fiber strengths were determined and compared with equiaxed La-monazite coatings. The relationships between coating porosity, coating hermeticity, and coated fiber strength are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONAZITE KW - XENOTIME KW - SURFACE coatings KW - CERAMIC fibers KW - NANOPARTICLES KW - PHOSPHORIC acid KW - TRANSMISSION electron microscopy KW - THERMAL analysis KW - CHEMISTRY experiments N1 - Accession Number: 28121074; Boakye, E. E. 1; Email Address: emmanuel.boakye@wpafb.af.mil Hay, R. S. 2 Mogilevsky, P. 1 Cinibulk, M. K. 2; Affiliation: 1: UES Inc., Dayton, Ohio 45432 2: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/MLLN), Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jan2008, Vol. 91 Issue 1, p17; Subject Term: MONAZITE; Subject Term: XENOTIME; Subject Term: SURFACE coatings; Subject Term: CERAMIC fibers; Subject Term: NANOPARTICLES; Subject Term: PHOSPHORIC acid; Subject Term: TRANSMISSION electron microscopy; Subject Term: THERMAL analysis; Subject Term: CHEMISTRY experiments; NAICS/Industry Codes: 327999 All Other Miscellaneous Nonmetallic Mineral Product Manufacturing; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; NAICS/Industry Codes: 325312 Phosphatic Fertilizer Manufacturing; Number of Pages: 9p; Illustrations: 5 Diagrams, 2 Charts, 9 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2007.02005.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28121074&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fagin, Barry AU - Baird, Leemon AU - Humphries, Jeffrey AU - Schweitzer, Dino T1 - Skepticism and Cryptography. JO - Knowledge, Technology & Policy JF - Knowledge, Technology & Policy Y1 - 2008/01// VL - 20 IS - 4 M3 - Article SP - 231 EP - 242 PB - Springer Science & Business Media B.V. SN - 19464789 AB - Cryptography is an essential component of America’s national security infrastructure. Billions of dollars are spent on cryptosystems every year, in both the public and private sector. Unfortunately, the field is rife with dubious claims, snake oil salesmen, and outright fraud. This paper highlights the importance of skepticism and critical thinking in the role of evaluating and procuring cryptosystems. We discuss our experiences in teaching future leaders about testing extraordinary cryptographic claims by asking hard questions and show examples from our own experience. We believe that the rigorous application of skepticism and critical thinking in cryptography are absolutely essential to the wise use of America’s resources and the security of the nation. [ABSTRACT FROM AUTHOR] AB - Copyright of Knowledge, Technology & Policy is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SKEPTICISM KW - SYMBOLISM KW - CRYPTOGRAPHY KW - COMPUTER security software KW - DATA encryption (Computer science) KW - BELIEF & doubt KW - SIGNS & symbols KW - NATIONAL security -- United States KW - UNITED States KW - Cryptography KW - Cryptosystems KW - National security infrastructure KW - Skepticism N1 - Accession Number: 27813280; Fagin, Barry 1; Email Address: Barry.Fagin@usafa.edu Baird, Leemon 1 Humphries, Jeffrey 1 Schweitzer, Dino 1; Affiliation: 1: Department of Computer Science , Academy Center for Information Security, US Air Force Academy , 2354 Fairchild Drive USAFA 80840 USA; Source Info: Jan2008, Vol. 20 Issue 4, p231; Subject Term: SKEPTICISM; Subject Term: SYMBOLISM; Subject Term: CRYPTOGRAPHY; Subject Term: COMPUTER security software; Subject Term: DATA encryption (Computer science); Subject Term: BELIEF & doubt; Subject Term: SIGNS & symbols; Subject Term: NATIONAL security -- United States; Subject Term: UNITED States; Author-Supplied Keyword: Cryptography; Author-Supplied Keyword: Cryptosystems; Author-Supplied Keyword: National security infrastructure; Author-Supplied Keyword: Skepticism; NAICS/Industry Codes: 928110 National Security; Number of Pages: 12p; Illustrations: 2 Diagrams, 1 Chart; Document Type: Article L3 - 10.1007/s12130-007-9030-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27813280&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heller, E.R. AU - Crespo, A. T1 - Electro-thermal modeling of multifinger AlGaN/GaN HEMT device operation including thermal substrate effects JO - Microelectronics Reliability JF - Microelectronics Reliability Y1 - 2008/01// VL - 48 IS - 1 M3 - Article SP - 45 EP - 50 SN - 00262714 AB - Abstract: AlGaN/GaN high electron mobility transistor (HEMT) device operation was modeled from the sub-micrometer scale to the substrate using a combination of an electro-thermal device model for the active device with realistic power dissipation within the device and a coupled three dimensional thermal model to account for the substrate. Temperatures for various points within a device were determined as a function of biasing conditions, substrate thickness and temperature, number of fingers, and gate length and pitch. As an example, we have used our model to show that life test results of industry-relevant devices can be significantly affected by the exact testing technique used. [Copyright &y& Elsevier] AB - Copyright of Microelectronics Reliability is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONICS KW - ELECTRICAL engineering KW - ENGINEERING KW - PHYSICAL sciences N1 - Accession Number: 30016388; Heller, E.R. 1,2; Email Address: eric.heller@wright.edu Crespo, A. 3; Affiliation: 1: Air Force Research Laboratory, Materials Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: Semiconductor Research Center, Wright State University, Dayton, OH 45435, USA 3: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Jan2008, Vol. 48 Issue 1, p45; Subject Term: ELECTRONICS; Subject Term: ELECTRICAL engineering; Subject Term: ENGINEERING; Subject Term: PHYSICAL sciences; NAICS/Industry Codes: 541330 Engineering Services; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.microrel.2007.01.090 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30016388&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McCauley, Mathew AU - Hughes, Jamie Hacker AU - Liebling-Kalifani, Helen T1 - Ethical Considerations for Military Clinical Psychologists: A Review of Selected Literature. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2008/01// VL - 20 IS - 1 M3 - Article SP - 7 EP - 20 PB - Taylor & Francis Ltd SN - 08995605 AB - Clinical psychology has had a long and distinguished association with the practice of mental health care in the military. Although clinical psychologists are trained both to adopt and implement ethical values and principles, the military environment holds many contextual and tangible differences from other clinical settings. This literature review investigates the ethical considerations arising from the practice of clinical psychology within the military. Several ethical issues were identified and confidentiality and boundary violations emerged as the two main areas of ethical concern. The findings may have implications for the overall practice of mental health care in the military, the contributions that clinical psychologists make to such services, the role of clinical psychology in times of international conflict, the training of clinical psychologists for military service, and avenues for future research on the practices of military mental health professionals. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CLINICAL psychology KW - MENTAL health services KW - CLINICAL psychologists KW - MILITARY ethics KW - MILITARY psychology N1 - Accession Number: 31561366; McCauley, Mathew 1; Email Address: mathew.mccauley@lakenheath.af.mil Hughes, Jamie Hacker 2 Liebling-Kalifani, Helen 3; Affiliation: 1: 48th Fighter Wing, United States Air Force, RAF Lakenheath, United Kingdom. 2: Clinical Psychology Service, Defence Medical Services, Ministry of Defence, London, United Kingdom. 3: Faculty of Health and Life Sciences, Coventry University, Coventry, United Kingdom.; Source Info: Jan2008, Vol. 20 Issue 1, p7; Subject Term: CLINICAL psychology; Subject Term: MENTAL health services; Subject Term: CLINICAL psychologists; Subject Term: MILITARY ethics; Subject Term: MILITARY psychology; NAICS/Industry Codes: 623220 Residential Mental Health and Substance Abuse Facilities; NAICS/Industry Codes: 621330 Offices of Mental Health Practitioners (except Physicians); NAICS/Industry Codes: 622210 Psychiatric and Substance Abuse Hospitals; Number of Pages: 14p; Document Type: Article L3 - 10.1080/08995600701753128 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31561366&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, Martin L. T1 - The Good Fight: Why Liberals-and Only Liberals-Can Win the War on Terror and Make America Great Again. JO - Political Theology JF - Political Theology Y1 - 2008/01// VL - 9 IS - 1 M3 - Book Review SP - 115 EP - 117 PB - Taylor & Francis Ltd SN - 1462317X AB - The article reviews the book "The Good Fight: Why Liberals- and Only Liberals- Can Win a War on Terror and Make America Great Again," by Peter Beinhart. KW - LIBERALISM KW - NONFICTION KW - BEINHART, Peter KW - GOOD Fight: Why Liberals & Only Liberals Can Win the War on Terror & Make America Great Again, The (Book) N1 - Accession Number: 36002591; Cook, Martin L. 1; Email Address: Martin.Cook@USAFA.af.mil; Affiliation: 1: US Air Force Academy.; Source Info: Jan2008, Vol. 9 Issue 1, p115; Subject Term: LIBERALISM; Subject Term: NONFICTION; Reviews & Products: GOOD Fight: Why Liberals & Only Liberals Can Win the War on Terror & Make America Great Again, The (Book); People: BEINHART, Peter; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36002591&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harrison, Richard A. AU - Davis, Christopher J. AU - Eyles, Christopher J. AU - Bewsher, Danielle AU - Crothers, Steve R. AU - Davies, Jackie A. AU - Howard, Russell A. AU - Moses, Daniel J. AU - Socker, Dennis G. AU - Newmark, Jeffrey S. AU - Halain, Jean-Philippe AU - Defise, Jean-Marc AU - Mazy, Emmanuel AU - Rochus, Pierre AU - Webb, David F. AU - Simnett, George M. T1 - First Imaging of Coronal Mass Ejections in the Heliosphere Viewed from Outside the Sun – Earth Line. JO - Solar Physics JF - Solar Physics Y1 - 2008/01// VL - 247 IS - 1 M3 - Article SP - 171 EP - 193 PB - Springer Science & Business Media B.V. SN - 00380938 AB - We show for the first time images of solar coronal mass ejections (CMEs) viewed using the Heliospheric Imager (HI) instrument aboard the NASA STEREO spacecraft. The HI instruments are wide-angle imaging systems designed to detect CMEs in the heliosphere, in particular, for the first time, observing the propagation of such events along the Sun – Earth line, that is, those directed towards Earth. At the time of writing the STEREO spacecraft are still close to the Earth and the full advantage of the HI dual-imaging has yet to be realised. However, even these early results show that despite severe technical challenges in their design and implementation, the HI instruments can successfully detect CMEs in the heliosphere, and this is an extremely important milestone for CME research. For the principal event being analysed here we demonstrate an ability to track a CME from the corona to over 40 degrees. The time – altitude history shows a constant speed of ascent over at least the first 50 solar radii and some evidence for deceleration at distances of over 20 degrees. Comparisons of associated coronagraph data and the HI images show that the basic structure of the CME remains clearly intact as it propagates from the corona into the heliosphere. Extracting the CME signal requires a consideration of the F-coronal intensity distribution, which can be identified from the HI data. Thus we present the preliminary results on this measured F-coronal intensity and compare these to the modelled F-corona of Koutchmy and Lamy ( IAU Colloq. 85, 63, ). This analysis demonstrates that CME material some two orders of magnitude weaker than the F-corona can be detected; a specific example at 40 solar radii revealed CME intensities as low as 1.7×10−14 of the solar brightness. These observations herald a new era in CME research as we extend our capability for tracking, in particular, Earth-directed CMEs into the heliosphere. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORONAL mass ejections KW - SOLAR activity KW - IMAGING systems KW - HELIOSPHERE (Astrophysics) KW - SUN KW - Coronal mass ejection KW - Heliosphere N1 - Accession Number: 28526950; Harrison, Richard A. 1,2; Email Address: r.harrison@rl.ac.uk Davis, Christopher J. 1 Eyles, Christopher J. 1,3,4 Bewsher, Danielle 1 Crothers, Steve R. 1 Davies, Jackie A. 1 Howard, Russell A. 3 Moses, Daniel J. 2 Socker, Dennis G. 2 Newmark, Jeffrey S. 2 Halain, Jean-Philippe 5 Defise, Jean-Marc 5 Mazy, Emmanuel 5 Rochus, Pierre 5 Webb, David F. 6,7 Simnett, George M. 3; Affiliation: 1: Space Science and Technology Department, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, UK 2: Space Science Division, Naval Research Laboratory, Washington, DC, USA 3: School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK 4: Grupo de Astronomia y Ciencias del Espacio, ICMUV, Universidad de Valencia, Valencia, Spain 5: Centre Spatial de Liège, Université de Liège, ave Pré Aily, 4031 Angleur, Belgium 6: Institute for Scientific Research, Boston College, Chestnut Hill, MA, USA 7: Air Force Research Laboratory, Hanscom, AFB, MA, USA; Source Info: Jan2008, Vol. 247 Issue 1, p171; Subject Term: CORONAL mass ejections; Subject Term: SOLAR activity; Subject Term: IMAGING systems; Subject Term: HELIOSPHERE (Astrophysics); Subject Term: SUN; Author-Supplied Keyword: Coronal mass ejection; Author-Supplied Keyword: Heliosphere; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; Number of Pages: 23p; Illustrations: 5 Color Photographs, 7 Black and White Photographs, 1 Diagram, 3 Charts, 4 Graphs; Document Type: Article L3 - 10.1007/s11207-007-9083-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28526950&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miyoshi, Kazuhisa AU - Sanders, Jeffrey H. AU - Hager, Carl H. AU - Zabinski, Jeffrey S. AU - Vander Wal, Randall L. AU - Andrews, Rodney AU - Street, Kenneth W. AU - Lerch, Bradley A. AU - Abel, Phillip B. T1 - Wear behavior of low-cost, lightweight TiC/Ti–6Al–4V composite under fretting: Effectiveness of solid-film lubricant counterparts JO - Tribology International JF - Tribology International Y1 - 2008/01// VL - 41 IS - 1 M3 - Article SP - 24 EP - 33 SN - 0301679X AB - Abstract: The wear behavior of low-cost, lightweight 10wt% titanium carbide (TiC)-particulate-reinforced Ti–6Al–4V matrix composite (TiC/Ti–6Al–4V) was examined under fretting at 296, 423, and 523K in air. Bare 10wt% TiC/Ti–6Al–4V hemispherical pins were used in contact with dispersed multiwalled carbon nanotubes (MWNTs), magnetron-sputtered diamond-like carbon/chromium (DLC/Cr), magnetron-sputtered graphite-like carbon/chromium (GLC/Cr), and magnetron-sputtered molybdenum disulfide/titanium (MoS2/Ti) deposited on Ti–6Al–4V, Ti–48Al–2Cr–2Nb, and nickel-based superalloy 718. When TiC/Ti–6Al–4V was brought into contact with bare Ti–6Al–4V, bare Ti–48Al–2Cr–2Nb, and bare nickel-based superalloy 718, strong adhesion, severe galling, and severe wear occurred. However, when TiC/Ti–6Al–4V was brought into contact with MWNT, DLC/Cr, GLC/Cr, and MoS2/Ti coatings, no galling occurred in the contact, and relatively minor wear was observed regardless of the coating. All the MWNT, DLC/Cr, GLC/Cr, and MoS2/Ti coatings on Ti–6Al–4V were effective from 296 to 523K, but the effectiveness of the MWNT, DLC/Cr, GLC/Cr, and MoS2/Ti coatings decreased as temperature increased. [Copyright &y& Elsevier] AB - Copyright of Tribology International is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COATINGS industry KW - NANOTUBES KW - METALS KW - THIN films KW - Anti-galling coatings KW - Fretting wear KW - TiC/Ti–6Al–4V N1 - Accession Number: 26681642; Miyoshi, Kazuhisa 1; Email Address: Kazuhisa.Miyoshi@nasa.gov Sanders, Jeffrey H. 2 Hager, Carl H. 2 Zabinski, Jeffrey S. 2 Vander Wal, Randall L. 3 Andrews, Rodney 4 Street, Kenneth W. 1 Lerch, Bradley A. 1 Abel, Phillip B. 1; Affiliation: 1: National Aeronautics and Space Administration, Glenn Research Center, 21000 Brookpark Road, Cleveland, OH 44135, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA 3: National Center for Space Exploration Research, Glenn Research Center, 21000 Brookpark Road, Cleveland, OH 44135, USA 4: University of Kentucky, Lexington, KY 40511, USA; Source Info: Jan2008, Vol. 41 Issue 1, p24; Subject Term: COATINGS industry; Subject Term: NANOTUBES; Subject Term: METALS; Subject Term: THIN films; Author-Supplied Keyword: Anti-galling coatings; Author-Supplied Keyword: Fretting wear; Author-Supplied Keyword: TiC/Ti–6Al–4V; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.triboint.2007.04.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26681642&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Troe, Jürgen AU - Miller, Thomas M. AU - Viggiano, Albert A. T1 - Low-energy electron attachment to SF6. I. Kinetic modeling of nondissociative attachment. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2007/12/28/ VL - 127 IS - 24 M3 - Article SP - 244303 PB - American Institute of Physics SN - 00219606 AB - Low-energy electron-molecule collisions are analyzed by kinetic modeling within the framework of statistical unimolecular rate theory. Nondissociative electron attachment to SF6 is used to illustrate the approach. An internally consistent representation is provided for attachment cross sections and rate coefficients in relation to detachment lifetimes, and both thermal and specific rate coefficients for detachment. By inspecting experimental data, the contributions of intramolecular vibrational redistribution and vibrationally inelastic collisions can be characterized quantitatively. This allows for a prediction of attachment rate coefficients as a function of electron and gas temperature as well as gas pressure over wide ranges of conditions. The importance of carefully controlling all experimental parameters, including the carrier gas pressure, is illustrated. The kinetic modeling in Part II of this series is extended to dissociative electron attachment to SF6. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON-molecule collisions KW - COLLISIONS (Nuclear physics) KW - ELECTRON configuration KW - SCISSION (Chemistry) KW - PHYSICAL & theoretical chemistry N1 - Accession Number: 28131148; Troe, Jürgen 1; Email Address: shoff@gwdg.de Miller, Thomas M. 2 Viggiano, Albert A. 2; Affiliation: 1: Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Bedford, Massachusetts 01731-3010, USA; Source Info: 12/28/2007, Vol. 127 Issue 24, p244303; Subject Term: ELECTRON-molecule collisions; Subject Term: COLLISIONS (Nuclear physics); Subject Term: ELECTRON configuration; Subject Term: SCISSION (Chemistry); Subject Term: PHYSICAL & theoretical chemistry; Number of Pages: 12p; Illustrations: 3 Charts, 7 Graphs; Document Type: Article L3 - 10.1063/1.2804761 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28131148&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Troe, Jürgen AU - Miller, Thomas M. AU - Viggiano, Albert A. T1 - Low-energy electron attachment to SF6. II. Temperature and pressure dependences of dissociative attachment. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2007/12/28/ VL - 127 IS - 24 M3 - Article SP - 244304 PB - American Institute of Physics SN - 00219606 AB - Low-energy electron-molecule collisions, leading to dissociative attachment through metastable anionic states, are kinetically modeled within the framework of statistical unimolecular rate theory. The reaction e-+SF6→SF5-+F is used as an illustrative example. The modeling is applied to new measurements of branching fractions for SF5- formation in the bath gas He between 360 and 670 K at 1 and 2 Torr, and between 490 and 620 K over the range of 0.3–9 Torr. The analysis of the data follows the previous kinetic modeling of the nondissociative electron attachment, e-+SF6→SF6-, from Part I of this series. Experimental results from the present work and the literature on branching fractions and total cross sections for anion formation as functions of electron energies, bath gas temperatures and pressures, as well as observation times are analyzed. The assumption of a participation of the electronic ground state of SF6- alone suffices to model the available experimental data. A value of the dissociation energy of SF6- into SF5-+F of E0,dis=1.61(±0.05) eV is determined, which may be compared to the electron affinity of SF6, EA=1.20(±0.05) eV, such as derived in Part III of this series. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLISIONS (Nuclear physics) KW - ELECTRON-molecule collisions KW - ELECTRON configuration KW - SCISSION (Chemistry) KW - PHYSICAL & theoretical chemistry N1 - Accession Number: 28131147; Troe, Jürgen 1; Email Address: shoff@gwdg.de Miller, Thomas M. 2 Viggiano, Albert A. 2; Affiliation: 1: Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany 2: Air Force Research Laboratory (AFRL), Space Vehicles Directorate, Hanscom Air Force Base, Bedford, Massachusetts 01731-3010, USA; Source Info: 12/28/2007, Vol. 127 Issue 24, p244304; Subject Term: COLLISIONS (Nuclear physics); Subject Term: ELECTRON-molecule collisions; Subject Term: ELECTRON configuration; Subject Term: SCISSION (Chemistry); Subject Term: PHYSICAL & theoretical chemistry; Number of Pages: 13p; Illustrations: 3 Charts, 11 Graphs; Document Type: Article L3 - 10.1063/1.2804762 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28131147&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Viggiano, Albert A. AU - Miller, Thomas M. AU - Friedman, Jeffrey F. AU - Troe, Jürgen T1 - Low-energy electron attachment to SF6. III. From thermal detachment to the electron affinity of SF6. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2007/12/28/ VL - 127 IS - 24 M3 - Article SP - 244305 PB - American Institute of Physics SN - 00219606 AB - The thermal attachment of electrons to SF6 is measured in a flowing-afterglow Langmuir-probe apparatus monitoring electron concentrations versus axial position in the flow tube. Temperatures between 300 and 670 K and pressures of the bath gas He in the range of 0.3–9 Torr are employed. Monitoring the concentrations of SF6- and SF5-, the latter of which does not detach electrons under the applied conditions, an onset of thermal detachment and dissociation of SF6 at temperatures above about 530 K is observed. Analysis of the mechanism allows one to deduce thermal detachment rate coefficients. Thermal dissociation rate coefficients for the reaction SF6-→SF5-+F can only be estimated by unimolecular rate theory based on the results from Part I and II of this series. Under the applied conditions they are found to be smaller than detachment rate coefficients. Combining thermal attachment and detachment rates in a third-law analysis, employing calculated vibrational frequencies of SF6 and SF6-, leads to the electron affinity (EA) of SF6-. The new value of EA=1.20(±0.05) eV is significantly higher than previous recommendations which were based on less direct methods. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LANGMUIR probes KW - PLASMA frequencies KW - ELECTRON configuration KW - SCISSION (Chemistry) KW - PHYSICAL & theoretical chemistry N1 - Accession Number: 28131146; Viggiano, Albert A. 1; Email Address: shoff@gwdg.de Miller, Thomas M. 1 Friedman, Jeffrey F. 2 Troe, Jürgen 3; Affiliation: 1: Air Force Research Laboratory (AFRL), Space Vehicles Directorate, Hanscom Air Force Base, Bedford, Massachusetts 01731-3010, USA 2: Department of Physics, University of Puerto Rico, Mayaguez, Puerto Rico 00681-9016, USA 3: Institute for Physical Chemistry, University of Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany; Source Info: 12/28/2007, Vol. 127 Issue 24, p244305; Subject Term: LANGMUIR probes; Subject Term: PLASMA frequencies; Subject Term: ELECTRON configuration; Subject Term: SCISSION (Chemistry); Subject Term: PHYSICAL & theoretical chemistry; Number of Pages: 8p; Illustrations: 1 Diagram, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.2804764 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28131146&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - S. Feil AU - G. K. Koyanagi AU - A. A. Viggiano AU - D. K. Bohme T1 - Ozone Reactions with Alkaline-Earth Metal Cations and Dications in the Gas Phase:  Room-Temperature Kinetics and Catalysis. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2007/12/27/ VL - 111 IS - 51 M3 - Article SP - 13397 EP - 13402 SN - 10895639 AB - Room-temperature rate coefficients and product distributions are reported for the reactions of ozone with the cations and dications of the alkaline-earth metals Ca, Sr, and Ba. The measurements were performed with a selected-ion flow tube (SIFT) tandem mass spectrometer in conjunction with either an electrospray (ESI) or an inductively coupled plasma (ICP) ionization source. All the singly charged species react with ozone by O-atom transfer and form monoxide cations rapidly, k4.8, 6.7, and 8.7 × 10-10cm3molecule-1s-1for the reactions of Ca, Sr, and Ba, respectively. Further sequential O-atom transfer occurs to form dioxide and trioxide cations. The efficiencies for all O-atom transfer reactions are greater than 10%. The data also signify the catalytic conversion of ozone to oxygen with the alkaline-earth metal and metal oxide cations serving as catalysts. Ca2reacts rapidly with O3by charge separation to form CaOand O2with a rate coefficient of k1.5 × 10-9cm3molecule-1s-1. In contrast, the reactions of Sr2and Ba2are found to be slow and add O3, (k≥ 1.1 × 10-11cm3molecule-1s-1). The initial additions are followed by the rapid sequential addition of up to five O3molecules with values of kbetween 1 and 5 × 10-10cm3molecule-1s-1. Metal/ozone cluster ions as large as Sr2(O3)5and Ba2(O3)4were observed for the first time. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CATIONS KW - METALLIC oxides KW - SPECTROMETERS KW - MASS spectrometers N1 - Accession Number: 28330327; S. Feil 1 G. K. Koyanagi 1 A. A. Viggiano 1 D. K. Bohme 1; Affiliation: 1: Department of Chemistry, Centre for Research in Mass Spectrometry and Centre for Research in Earth andSpace Science, York University, Toronto, Ontario, Canada M3J 1P3, and Air Force Research Laboratory,Space Vehicles Directorate, 29 Randolph Road, Hanscom Air Force Base, Massachusetts 01731-3010; Source Info: Dec2007, Vol. 111 Issue 51, p13397; Subject Term: CATIONS; Subject Term: METALLIC oxides; Subject Term: SPECTROMETERS; Subject Term: MASS spectrometers; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28330327&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Basak, Subhash C. AU - Gute, Brian D. AU - Geiss, Kevin T. AU - Witzmann, Frank A. T1 - Information-Theoretic Biodescriptors for Proteomics Maps: Applications to Rodent Hepatotoxicity. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/12/26/ VL - 963 IS - 2 M3 - Article SP - 10 EP - 13 PB - American Institute of Physics SN - 0094243X AB - This paper describes an approach using information theory to derive a complexity measure for proteomics maps generated using 2-dimensional gel electrophoresis (2DE gel). The maps used in this study were partitioned into 5×5 grids and total protein abundance in each grid square was compared to the total abundance for the entire map. Next, Shannon's relation was applied to characterize the distribution of protein abundance across the entire map. Details of the approach are discussed, including an example of the calculations for one proteomics map containing 200 spots. Finally, results for the Map Information Content index are presented for a set of six maps calculated using 200, 500, and 1,400 protein spots. It is hoped that the application of information-theoretic techniques to characterize the complexity of these maps, thus reducing the amount of information presented to the researcher, will help in comparing maps containing a great deal of information and yield information useful in computational toxicology. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR biology KW - COLLOIDS KW - GELATION KW - ELECTROPHORESIS KW - INFORMATION theory KW - GEL electrophoresis KW - PHASE partition KW - 2DE gel KW - biodescriptor KW - complexity KW - halocarbon KW - hepatotoxicity KW - information theory KW - map information content KW - proteomics KW - proteomics maps N1 - Accession Number: 28154305; Basak, Subhash C. 1 Gute, Brian D. 1 Geiss, Kevin T. 2 Witzmann, Frank A. 3; Affiliation: 1: University of Minnesota Duluth, Natural Resources Research Institute, 5013 Miller Trunk Hwy., Duluth, MN 55811, USA 2: Human Effectiveness Directorate, Air Force Research Laboratory, 2610 Seventh Street, Wright-Patterson AFB, Ohio 45433, USA 3: Department of Cellular & Integrative Physiology, Indiana University School of Medicine, 1345 West 16th Street, Rm 308, Indianapolis, Indiana 46202, USA; Source Info: 12/26/2007, Vol. 963 Issue 2, p10; Subject Term: MOLECULAR biology; Subject Term: COLLOIDS; Subject Term: GELATION; Subject Term: ELECTROPHORESIS; Subject Term: INFORMATION theory; Subject Term: GEL electrophoresis; Subject Term: PHASE partition; Author-Supplied Keyword: 2DE gel; Author-Supplied Keyword: biodescriptor; Author-Supplied Keyword: complexity; Author-Supplied Keyword: halocarbon; Author-Supplied Keyword: hepatotoxicity; Author-Supplied Keyword: information theory; Author-Supplied Keyword: map information content; Author-Supplied Keyword: proteomics; Author-Supplied Keyword: proteomics maps; Number of Pages: 4p; Illustrations: 2 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.2835935 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28154305&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Scott T. Iacono AU - Stephen M. Budy AU - Joseph M. Mabry AU - Dennis W. Smith T1 - Synthesis, Characterization, and Surface Morphology of Pendant Polyhedral Oligomeric Silsesquioxane Perfluorocyclobutyl Aryl Ether Copolymers. JO - Macromolecules JF - Macromolecules Y1 - 2007/12/25/ VL - 40 IS - 26 M3 - Article SP - 9517 EP - 9522 SN - 00249297 AB - The synthesis and characterization of solution processable, semi-fluorinated perfluorocyclobutyl (PFCB) aryl ether polymers possessing covalently bound pendant polyhedral oligomeric silsesquioxanes (POSS) cages is reported. The synthesis of POSS aryl trifluorovinyl ether (TFVE) monomers was accomplished by the condensation of commercial monosilanolalkyl-POSS with a TFVE-functionalized chlorosilane. POSS TFVE monomers were elucidated by 1H, 19F, 13C, and 29Si NMR spectroscopy, ATR-FTIR analysis, and elemental (C, H, and F) combustion analysis. Bulk thermal copolymerization of POSS TFVE monomers afforded random and block PFCB aryl ether copolymers functionalized with various POSS loadings. Quantitative monomer conversion was monitored by 19F NMR, which produced copolymer number-average molecular weights (Mn) of (19.5−24.9) × 103(in CHCl3using polystyrene as standard) determined by gel permeation chromatography (GPC). Thermal properties of POSS PFCB aryl ether copolymers were evaluated by differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). Transmission electron microscope (TEM) analysis of spin cast optically transparent, flexible POSS PFCB aryl ether copolymer films revealed the presence of 5−20 nm-sized POSS agglomerates. Optical profilometer analysis of spin and drop cast film surfaces exhibited a modest increase in surface roughness of POSS PFCB aryl ether copolymers as compared to PFCB aryl ether homopolymers without POSS inclusion. The POSS copolymers exhibited a modest increase in hydrophobicity as measured by static water contact angle analysis. Synthesis, characterization, thermal analysis, and unique surface features of POSS PFCB aryl ether copolymers are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANIC compounds KW - POLYMERS KW - COPOLYMERS KW - MOLECULES N1 - Accession Number: 28017129; Scott T. Iacono 1 Stephen M. Budy 1 Joseph M. Mabry 1 Dennis W. Smith 1; Affiliation: 1: Department of Chemistry and Center for Optical Materials Science and Engineering Technologies(COMSET), Advanced Materials Research Laboratory, Clemson University, Clemson, South Carolina29634, and Air Force Research Laboratory, Propulsion Directorate, 10 East Saturn Boulevard,Edwards Air Force Base, California 93524; Source Info: Dec2007, Vol. 40 Issue 26, p9517; Subject Term: ORGANIC compounds; Subject Term: POLYMERS; Subject Term: COPOLYMERS; Subject Term: MOLECULES; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28017129&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lu, Yalin AU - Knize, R.J. T1 - Laser-assisted fabrication of new slab-coupled lithium niobate optical waveguide JO - Applied Surface Science JF - Applied Surface Science Y1 - 2007/12/15/ VL - 254 IS - 4 M3 - Article SP - 1079 EP - 1082 SN - 01694332 AB - Abstract: Recently a new type of lithium niobate waveguide was suggested for potential nonlinear optic applications. The waveguide consists of a uniform large core and a leaky coupled slab for realizing a lateral optical confinement to support the fundamental spatial mode propagation. Inside the waveguide, the slab layer is required to have a refractive index slightly lower than that of the core, but higher than that of the substrate. Lithium niobate doped with magnesium oxides shows an increased refractive index that is dependent on the dopant''s concentration. Therefore, in order to fabricate such waveguides, the pulsed laser deposition approach was used to study the growth of such composition-modified lithium niobate as the slab layer. The as-grown films were characterized on its expitaxy, structure, and optical performance, via X-ray diffraction analysis, optical guiding experiment, etc. [Copyright &y& Elsevier] AB - Copyright of Applied Surface Science is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVEGUIDES KW - COATING processes KW - LITHIUM KW - LITHIUM niobate KW - Lithium niobate film KW - Pulsed laser deposition KW - Slab-coupled waveguide N1 - Accession Number: 27702070; Lu, Yalin; Email Address: yalin.lu@usafa.af.mil Knize, R.J. 1; Affiliation: 1: Laser and Optics Research Center (LORC), 2354 Fairchild Dr., 2A31 US Air Force Academy, Colorado 80840, United States; Source Info: Dec2007, Vol. 254 Issue 4, p1079; Subject Term: WAVEGUIDES; Subject Term: COATING processes; Subject Term: LITHIUM; Subject Term: LITHIUM niobate; Author-Supplied Keyword: Lithium niobate film; Author-Supplied Keyword: Pulsed laser deposition; Author-Supplied Keyword: Slab-coupled waveguide; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.apsusc.2007.08.035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27702070&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roberts, Lewis C. AU - Hall, Doyle T. AU - Lambert, John V. AU - Africano, John L. AU - Knox, Keith T. AU - Barros, Jacob K. AU - Hamada, Kris M. AU - Liang, Dennis AU - Sydney, Paul F. AU - Kervin, Paul W. T1 - Characterization of the near-Earth Asteroid 2002 NY40 JO - ICARUS JF - ICARUS Y1 - 2007/12/15/ VL - 192 IS - 2 M3 - Article SP - 469 EP - 474 SN - 00191035 AB - Abstract: In August 2002, the near-Earth Asteroid 2002 NY40, made its closest approach to the Earth. This provided an opportunity to study a near-Earth asteroid with a variety of instruments. Several of the telescopes at the Maui Space Surveillance System were trained at the asteroid and collected adaptive optics images, photometry and spectroscopy. Analysis of the imagery reveals the asteroid is triangular shaped with significant self-shadowing. The photometry reveals a 20-h period and the spectroscopy shows that the asteroid is a Q-type. [Copyright &y& Elsevier] AB - Copyright of ICARUS is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASTEROIDS KW - SOLAR system KW - NEAR-earth asteroids KW - SPECTRUM analysis KW - Adaptive optics KW - Asteroids KW - Near-Earth objects KW - Spectroscopy N1 - Accession Number: 27734584; Roberts, Lewis C. 1; Email Address: lewis.c.roberts@boeing.com Hall, Doyle T. 1 Lambert, John V. 1 Africano, John L. 1 Knox, Keith T. 1 Barros, Jacob K. 1 Hamada, Kris M. 1 Liang, Dennis 1 Sydney, Paul F. 1 Kervin, Paul W. 2; Affiliation: 1: The Boeing Company, 535 Lipoa Pkwy, Suite 200, Kihei, HI 96753, USA 2: Detachment 15, Air Force Research Laboratory, Directed Energy Directorate, 535 Lipoa Pkwy, Suite 200, Kihei, HI 96753, USA; Source Info: Dec2007, Vol. 192 Issue 2, p469; Subject Term: ASTEROIDS; Subject Term: SOLAR system; Subject Term: NEAR-earth asteroids; Subject Term: SPECTRUM analysis; Author-Supplied Keyword: Adaptive optics; Author-Supplied Keyword: Asteroids; Author-Supplied Keyword: Near-Earth objects; Author-Supplied Keyword: Spectroscopy; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.icarus.2007.08.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27734584&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhang, Zhiying AU - Keppens, Veerle AU - Senkov, Oleg N. AU - Miracle, Daniel B. T1 - Elastic properties of Ca-based bulk metallic glasses studied by resonant ultrasound spectroscopy JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2007/12/15/ VL - 471 IS - 1/2 M3 - Article SP - 151 EP - 154 SN - 09215093 AB - Abstract: We report measurements of the elastic properties and internal friction of Ca-based bulk metallic glasses (BMGs), Ca50Mg20Cu30, Ca55Mg18Zn11Cu16 and Ca65Mg15Zn20 (numbers indicate at.%), as a function of temperature between 5 and 400K. Below the glass transition temperature, both Young''s modulus and shear modulus decrease with increasing temperature, and the Poisson ratio increases with increasing temperature. Above the glass transition temperature, these trends reverse due to crystallization. At temperatures close to the glass transition temperature, we observe the onset of a peak in the internal friction Q −1, attributed to crystallization. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRUM analysis KW - GLASS transition temperature KW - THERMOPHYSICAL properties KW - LIQUID metals KW - Ca-based bulk metallic glasses KW - Elastic properties KW - Internal friction KW - Resonant ultrasound spectroscopy N1 - Accession Number: 26413261; Zhang, Zhiying 1 Keppens, Veerle 1; Email Address: vkeppens@utk.edu Senkov, Oleg N. 2 Miracle, Daniel B. 3; Affiliation: 1: Department of Materials Science and Engineering, 434 Dougherty Hall, The University of Tennessee, Knoxville, TN 37996, USA 2: UES Inc., 4401 Dayton-Xenia Rd., Dayton, Ohio, OH 45432, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio, OH 45433, USA; Source Info: Dec2007, Vol. 471 Issue 1/2, p151; Subject Term: SPECTRUM analysis; Subject Term: GLASS transition temperature; Subject Term: THERMOPHYSICAL properties; Subject Term: LIQUID metals; Author-Supplied Keyword: Ca-based bulk metallic glasses; Author-Supplied Keyword: Elastic properties; Author-Supplied Keyword: Internal friction; Author-Supplied Keyword: Resonant ultrasound spectroscopy; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.msea.2007.01.157 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26413261&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tuomisto, F. AU - Look, D.C. AU - Farlow, G.C. T1 - Defect studies in electron-irradiated ZnO and GaN JO - Physica B JF - Physica B Y1 - 2007/12/15/ VL - 401-402 M3 - Article SP - 604 EP - 608 SN - 09214526 AB - Abstract: We present experimental results obtained with positron annihilation spectroscopy in room-temperature electron-irradiated n-type ZnO and GaN. The cation vacancies act as important compensating centers in 2MeV electron-irradiated samples, even though their introduction rates are different by 2 orders of magnitude. In addition, negatively charged non-open volume defects that also compensate the n-type conductivity are produced together with the cation vacancies at similar introduction rates. The low introduction rates of compensating defects in ZnO demonstrate the radiation hardness of the material. Isochronal thermal annealings were performed to study the dynamics of the irradiation-induced defects. In 2MeV electron-irradiated ZnO, all the defects introduced in the irradiation disappear already at 600K, while 1100K is needed in GaN. Several separate annealing stages of the defects are observed in both materials, the first at 400K. [Copyright &y& Elsevier] AB - Copyright of Physica B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IRRADIATION KW - PARTICLES (Nuclear physics) KW - POSITRON annihilation KW - RADIATION KW - GaN KW - Positron annihilation KW - Vacancy defects KW - ZnO N1 - Accession Number: 27660181; Tuomisto, F. 1; Email Address: filip.tuomisto@tkk.fi Look, D.C. 2,3 Farlow, G.C. 4; Affiliation: 1: Laboratory of Physics, Helsinki University of Technology, 02015 TKK Espoo, Finland 2: Semiconductor Research Center, Wright State University, Dayton, OH 45435, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 4: Physics Department, Wright State University, Dayton, OH 45435, USA; Source Info: Dec2007, Vol. 401-402, p604; Subject Term: IRRADIATION; Subject Term: PARTICLES (Nuclear physics); Subject Term: POSITRON annihilation; Subject Term: RADIATION; Author-Supplied Keyword: GaN; Author-Supplied Keyword: Positron annihilation; Author-Supplied Keyword: Vacancy defects; Author-Supplied Keyword: ZnO; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.physb.2007.09.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27660181&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Howe, B. AU - Bareño, J. AU - Sardela, M. AU - Wen, J.G. AU - Greene, J.E. AU - Hultman, L. AU - Voevodin, A.A. AU - Petrov, I. T1 - Growth and physical properties of epitaxial metastable Hf1− x Al x N alloys deposited on MgO(001) by ultrahigh vacuum reactive magnetron sputtering JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2007/12/15/ VL - 202 IS - 4-7 M3 - Article SP - 809 EP - 814 SN - 02578972 AB - Abstract: Epitaxial metastable Hf1− x Al x N alloys with 0≤ x ≤0.50 were grown on MgO(001) substrates at 600 °C by ultrahigh vacuum reactive magnetron sputtering from Hf and Al targets in 90% Ar+10% N2 discharges at 7 mTorr. X-Ray diffraction and cross-sectional transmission electron microscopy show that Hf1− x Al x N alloys are single crystals with the B1–NaCl structure. Rutherford backscattering spectroscopy investigations reveal that all films are slightly overstochiometric with N/(Hf+Al)=1.05±0.05. The relaxed lattice parameter decreased linearly from 0.4519 nm with x =0 to 0.4438 nm with x =0.50, compared to 0.4320 nm expected from the linear Vegard''s rule. We find a metastable single phase field that is remarkably broad given the large lattice mismatch (≃9%) between the two alloy components. Alloying HfN with AlN leads to an increase in hardness (≃30% to 32.4±0.7 GPa), as well as nanostructured compositional modulations due to the onset of spinodal decomposition. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL alloys KW - MAGNETRONS KW - COATING processes KW - X-ray diffraction KW - Hard coatings KW - HfN KW - Magnetron sputtering KW - TEM KW - XRD N1 - Accession Number: 27444523; Howe, B. 1,2 Bareño, J. 3 Sardela, M. 3 Wen, J.G. 3 Greene, J.E. 3 Hultman, L. 1 Voevodin, A.A. 2 Petrov, I. 3; Email Address: petrov@uiuc.edu; Affiliation: 1: Department of Physics, Linköping University, S-581 83 Linköping, Sweden 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio, USA 3: Frederick Seitz Materials Research Laboratory and Materials Science Department, University of Illinois, 104 South Goodwin, Urbana, Illinois 61801, USA; Source Info: Dec2007, Vol. 202 Issue 4-7, p809; Subject Term: NICKEL alloys; Subject Term: MAGNETRONS; Subject Term: COATING processes; Subject Term: X-ray diffraction; Author-Supplied Keyword: Hard coatings; Author-Supplied Keyword: HfN; Author-Supplied Keyword: Magnetron sputtering; Author-Supplied Keyword: TEM; Author-Supplied Keyword: XRD; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.surfcoat.2007.05.079 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27444523&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ferranti, Louis AU - Jordan, Jennifer L. AU - Dick, Richard D. AU - Thadhani, Naresh N. T1 - SHOCK HUGONIOT BEHAVIOR OF PARTICLE REINFORCED POLYMER COMPOSITES. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/12/12/ VL - 955 IS - 1 M3 - Article SP - 123 EP - 126 PB - American Institute of Physics SN - 0094243X AB - The shock Hugoniot of polymers is known to exhibit a non-linear US-UP relationship at relatively low pressures and commonly displays a concave curvature with an initially rapid shock velocity. However, the experimentally measured shock Hugoniot of particle reinforced composites shows an opposite effect displaying a convex curvature with an initially rapid change in particle velocity. Transformation to pressure-volume space shows an initial expansion that is not related to a low-pressure phase change or reaction. In contrast, the volume expansion is connected to decohesion of solid particles from the polymer matrix. Equation of state experiments conducted for epoxy-cast Al+Fe2O3 composites show deviation from ideal Hugoniot behavior as a result of damage evolving at a critical impact stress. Two compositions prepared with significantly different volume fractions of the binder phase show damage occurring at approximately the same critical impact stress. The Burch-Murnaghan equation of state (BM-EOS) is used to characterize the composite's compressibility and identify the magnitude of the critical damage stress. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - HIGH pressure (Science) KW - SHOCK (Mechanics) KW - CONDENSED matter KW - SHOCK waves KW - aluminum-iron oxide KW - epoxy KW - Equation of state N1 - Accession Number: 28001720; Ferranti, Louis 1 Jordan, Jennifer L. 2 Dick, Richard D. 3 Thadhani, Naresh N. 1; Affiliation: 1: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245 2: Air Force Research Laboratory (AFRL/MNME), Eglin AFB, FL 32578 3: Shocks Unlimited, Albuquerque, NM; Source Info: 12/12/2007, Vol. 955 Issue 1, p123; Subject Term: POLYMERS; Subject Term: HIGH pressure (Science); Subject Term: SHOCK (Mechanics); Subject Term: CONDENSED matter; Subject Term: SHOCK waves; Author-Supplied Keyword: aluminum-iron oxide; Author-Supplied Keyword: epoxy; Author-Supplied Keyword: Equation of state; Number of Pages: 4p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.2832944 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28001720&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Donahue, L. AU - Ripley, R. C. AU - Horie, Y. AU - Jenkins, C. M. AU - Zhang, F. T1 - CYLINDRICAL EXPLOSIVE DISPERSAL OF METAL PARTICLES. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/12/12/ VL - 955 IS - 1 M3 - Article SP - 365 EP - 368 PB - American Institute of Physics SN - 0094243X AB - The explosive dispersal of densely-packed metal particles in cylindrical RDX-based charges is studied numerically in support of experimental trials. Simulations are conducted using a reactive multiphase fluid dynamic code. Spherical tungsten particles are applied in high metal mass fraction cylindrical and spherical charges in two configurations: a particle matrix uniformly embedded in a solid explosive versus an annular shell of particles surrounding a high-explosive core. The effect of particle number density is investigated by varying the nominal particle diameter from 27 to 120 □m while maintaining a constant metal mass fraction. Results are compared with steel particles to evaluate the influence of material density on dispersal. The dispersal dynamics are recorded on wave diagrams and are observed at radial locations in terms of arrival time, velocity and particle concentration. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXPLOSIVES KW - DISPERSION KW - CHEMICAL weapons disposal KW - MULTIPHASE flow KW - FLUID dynamics KW - METAL clusters KW - CHROMIUM group KW - heterogeneous explosive KW - Multiphase flow KW - particle dispersal KW - RDX KW - tungsten N1 - Accession Number: 28001613; Donahue, L. 1 Ripley, R. C. 1 Horie, Y. 2 Jenkins, C. M. 2 Zhang, F. 3; Affiliation: 1: Martec Limited, Suite 400 - 1888 Brunswick Street, Halifax, NS, B3J 3J8 CANADA 2: US Air Force Research Laboratory, Eglin Air Force Base, FL, 32542 USA 3: Defence R&D Canada-Suffield, PO Box 4000, Station Main, Medicine Hat, AB, T1A 8K6 CANADA; Source Info: 12/12/2007, Vol. 955 Issue 1, p365; Subject Term: EXPLOSIVES; Subject Term: DISPERSION; Subject Term: CHEMICAL weapons disposal; Subject Term: MULTIPHASE flow; Subject Term: FLUID dynamics; Subject Term: METAL clusters; Subject Term: CHROMIUM group; Author-Supplied Keyword: heterogeneous explosive; Author-Supplied Keyword: Multiphase flow; Author-Supplied Keyword: particle dispersal; Author-Supplied Keyword: RDX; Author-Supplied Keyword: tungsten; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 4p; Illustrations: 2 Diagrams, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.2833059 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28001613&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stewart, D. Scott AU - Yoo, Sunhee AU - Lambert, David E. T1 - CRITICAL IGNITION TRANSIENTS IN CONDENSED EXPLOSIVES. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/12/12/ VL - 955 IS - 1 M3 - Article SP - 421 EP - 424 PB - American Institute of Physics SN - 0094243X AB - Comparisons of detonation shock motion measured in experiment, predicted by detonation shock dynamics (DSD-theory) and direct multi-material simulations that use non-ideal, reactive equation of state and rate laws to describe the explosive, are discussed. We show how the diameter effect curve and the extinction radius may be used to describe transient and high shock curvature detonation. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXPLOSIVES KW - DETONATION waves KW - SHOCK (Mechanics) KW - SHOCK waves KW - THERMODYNAMICS KW - BLAST effect KW - Detonation shock dynamics KW - experiment KW - PBX-9501 KW - validation N1 - Accession Number: 28001597; Stewart, D. Scott 1 Yoo, Sunhee 1 Lambert, David E. 2; Affiliation: 1: Mechanical Science and Engineering, University of Illinois, Urbana, IL 61801 2: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, 32542; Source Info: 12/12/2007, Vol. 955 Issue 1, p421; Subject Term: EXPLOSIVES; Subject Term: DETONATION waves; Subject Term: SHOCK (Mechanics); Subject Term: SHOCK waves; Subject Term: THERMODYNAMICS; Subject Term: BLAST effect; Author-Supplied Keyword: Detonation shock dynamics; Author-Supplied Keyword: experiment; Author-Supplied Keyword: PBX-9501; Author-Supplied Keyword: validation; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 4p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.2833082 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28001597&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Flater, P. J. AU - House, J. W. AU - O'Brien, J. M. AU - Hosford, W. F. T1 - HIGH STRAIN-RATE PROPERTIES OF TANTALUM PROCESSED BY EQUAL CHANNEL ANGULAR PRESSING. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/12/12/ VL - 955 IS - 1 M3 - Article SP - 517 EP - 520 PB - American Institute of Physics SN - 0094243X AB - Current ingot refinement and solidification techniques used in tantalum processing often result in inconsistent mechanical properties. Subsequent processing by equal channel angular pressing (ECAP) has been shown to reduce or eliminate internal structural variations as well as part-to-part variability [2]. This paper presents the effects of ECAP processing on the properties of tantalum. The materials of interest are 2.5-inch round bar tantalum supplied by H.C. Starck and Cabot Supermetals. Three metallurgical conditions were examined for each material: as worked, fine-grain annealed, and large-grain annealed. Prior to annealing, each bar was processed eight times through a 135-degree ECAP die using route C (billet rotated 180 degrees between passes) and then forged into 0.25-inch thick plates. Mechanical property specimens were subsequently removed from the plates for low and high-rate uniaxial compression experiments. Orientation dependence was characterized by orienting specimen load axes through the thickness or in the plane of the forged plate. Wave propagation and anisotropy were studied using Taylor impact experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - TANTALUM KW - INGOTS KW - ANNEALING of metals KW - SOLIDIFICATION KW - METALLURGY KW - ECAE KW - ECAP KW - Tantalum KW - Taylor impact N1 - Accession Number: 28001572; Flater, P. J. 1 House, J. W. 1 O'Brien, J. M. 2 Hosford, W. F. 3; Affiliation: 1: Air Force Research Laboratory/Munitions Directorate, 101 W. Eglin Blvd, Eglin AFB, FL 32542 2: O'Brien & Associates, 406 S. Lane St, Blissfield, MI 49228 3: University of Michigan, Materials Science & Engr, 2300 Hayward St, Ann Arbor, MI 48109; Source Info: 12/12/2007, Vol. 955 Issue 1, p517; Subject Term: STRAINS & stresses (Mechanics); Subject Term: TANTALUM; Subject Term: INGOTS; Subject Term: ANNEALING of metals; Subject Term: SOLIDIFICATION; Subject Term: METALLURGY; Author-Supplied Keyword: ECAE; Author-Supplied Keyword: ECAP; Author-Supplied Keyword: Tantalum; Author-Supplied Keyword: Taylor impact; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 423510 Metal Service Centers and Other Metal Merchant Wholesalers; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 4p; Illustrations: 2 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1063/1.2833125 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28001572&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rumchik, C. G. AU - Jordan, J. L. T1 - EFFECT OF ALUMINUM PARTICLE SIZE ON THE HIGH STRAIN RATE PROPERTIES OF PRESSED ALUMINIZED EXPLOSIVES. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/12/12/ VL - 955 IS - 1 M3 - Article SP - 795 EP - 798 PB - American Institute of Physics SN - 0094243X AB - High strain rate mechanical properties of explosives are important since these materials see extreme loading environments. Previous studies have shown that decreasing the particle size of the explosive crystals in a polymer bonded explosive (PBX) can increase the strength. In this study, pressed explosives were prepared with varying aluminum particle size (from 50 nm to 30+ μm), particle shape (flake or spherical), and volume fraction in order to investigate the effect of aluminum particle size and morphology on the compressive stress-strain behavior of the material. The paper presents the results of high strain rate measurements, utilizing a split Hopkinson pressure bar, on the range of PBX formulations. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLE size distribution KW - EXPLOSIVES KW - EXPLOSIONS KW - MATERIALS -- Mechanical properties KW - MORPHOLOGY KW - NANOSTRUCTURED materials KW - Aluminized explosives KW - aluminum particle size KW - high strain rate testing KW - split Hopkinson pressure bar N1 - Accession Number: 28001499; Rumchik, C. G. 1 Jordan, J. L. 1; Affiliation: 1: Air Force Research Laboratory (AFRL/MNME), Eglin AFB, FL 32542; Source Info: 12/12/2007, Vol. 955 Issue 1, p795; Subject Term: PARTICLE size distribution; Subject Term: EXPLOSIVES; Subject Term: EXPLOSIONS; Subject Term: MATERIALS -- Mechanical properties; Subject Term: MORPHOLOGY; Subject Term: NANOSTRUCTURED materials; Author-Supplied Keyword: Aluminized explosives; Author-Supplied Keyword: aluminum particle size; Author-Supplied Keyword: high strain rate testing; Author-Supplied Keyword: split Hopkinson pressure bar; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325920 Explosives Manufacturing; Number of Pages: 4p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.2833243 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28001499&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jordan, J. L. AU - Dorgan, R. J. AU - Nixon, M. E. AU - Dick, R. D. T1 - INITIATION OF POLYMER BONDED EXPLOSIVE (PBXN-110) BY COMBINED SHOCK AND SHEAR LOADING. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/12/12/ VL - 955 IS - 1 M3 - Article SP - 941 EP - 944 PB - American Institute of Physics SN - 0094243X AB - Combined shock and shear loading of explosives has been shown to result in detonation of explosives at input pressures less than those required with a nearly planar shock. In this study, the effect of combined shock and shear loading on PBXN-110 is investigated. The explosive sample is loaded by a TNT/Octol plane wave lens or a Pentolite pad in contact with a layer of PMMA followed by a cylindrical wave shaper that has one side angled at 45 degrees. The experiment is repeated for different thicknesses of the PMMA layer in order to vary the input pressure. In addition, the experiment is modeled using the Lagrangian finite element hydrocode EPIC, and the results of the experiments are compared with the numerical simulations. [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - SHEAR (Mechanics) KW - LAGRANGIAN functions KW - PRESSURE KW - EXPLOSIVES KW - ANISOTROPY KW - PENTOLITE KW - PBXN-110 KW - Shock-shear ignition N1 - Accession Number: 28001460; Jordan, J. L. 1 Dorgan, R. J. 2 Nixon, M. E. 1 Dick, R. D. 3; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542 2: Jacobs Technology, TEAS Group, Eglin AFB, FL 32542 3: Shocks Unlimited, Albuquerque, NM 87114; Source Info: 12/12/2007, Vol. 955 Issue 1, p941; Subject Term: POLYMERS; Subject Term: SHEAR (Mechanics); Subject Term: LAGRANGIAN functions; Subject Term: PRESSURE; Subject Term: EXPLOSIVES; Subject Term: ANISOTROPY; Subject Term: PENTOLITE; Author-Supplied Keyword: PBXN-110; Author-Supplied Keyword: Shock-shear ignition; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325920 Explosives Manufacturing; Number of Pages: 4p; Illustrations: 1 Color Photograph, 3 Diagrams, 1 Chart, 1 Graph; Document Type: Article L3 - 10.1063/1.2833284 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28001460&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tuteja, Anish AU - Wonjae Choi AU - Minglin Ma AU - Mabry, Joseph M. AU - Mazzella, Sarah A. AU - Rutledge, Gregory C. AU - McKinley, Gareth H. AU - Cohen, Robert E. T1 - Designing Superoleophobic Surfaces. JO - Science JF - Science Y1 - 2007/12/07/ VL - 318 IS - 5856 M3 - Article SP - 1618 EP - 1622 SN - 00368075 AB - Understanding the complementary roles of surface energy and roughness on natural nonwetting surfaces has led to the development of a number of biomimetic superhydrophobic surfaces, which exhibit apparent contact angles with water greater than 150 degrees and low contact angle hysteresis. However, superoleophobic surfaces—those that display contact angles greater than 150 degrees with organic liquids having appreciably lower surface tensions than that of water—are extremely rare. Calculations suggest that creating such a surface would require a surface energy lower than that of any known material. We show how a third factor, re-entrant surface curvature, in conjunction with chemical composition and roughened texture, can be used to design surfaces that display extreme resistance to wetting from a number of liquids with low surface tension, including alkanes such as decane and octane. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL analysis KW - MATTER -- Properties KW - SURFACE roughness KW - PARASYMPATHOMIMETIC agents KW - PHYSICAL & theoretical chemistry KW - MAGNETIC induction KW - PSYCHOLOGY of learning KW - ALIPHATIC compounds KW - SURFACE chemistry N1 - Accession Number: 29380681; Tuteja, Anish 1 Wonjae Choi 2 Minglin Ma 1 Mabry, Joseph M. 3 Mazzella, Sarah A. 3 Rutledge, Gregory C. 1 McKinley, Gareth H. 2; Email Address: gareth@mit.edu Cohen, Robert E. 1; Email Address: recohen@mit.edu; Affiliation: 1: Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA 2: Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA 3: Air Force Research Laboratory, Edwards Air Force Base, CA 93524, USA; Source Info: 12/7/2007, Vol. 318 Issue 5856, p1618; Subject Term: MATHEMATICAL analysis; Subject Term: MATTER -- Properties; Subject Term: SURFACE roughness; Subject Term: PARASYMPATHOMIMETIC agents; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: MAGNETIC induction; Subject Term: PSYCHOLOGY of learning; Subject Term: ALIPHATIC compounds; Subject Term: SURFACE chemistry; Number of Pages: 5p; Illustrations: 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=29380681&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chaplin Jr., Robert L. AU - Jedynak, Jeffrey AU - Johnson, David AU - Helter, Donna AU - Shovelton, Lawrence AU - Garrett, Normalynn T1 - THE EFFECTS OF VALERIAN ON THE TIME COURSE OF EMERGENCE FROM GENERAL ANESTHESIA IN SPRAGUE-DAWLEY RATS (RATTUS NORVEGICUS). JO - AANA Journal JF - AANA Journal Y1 - 2007/12// VL - 75 IS - 6 M3 - Article SP - 431 EP - 435 PB - American Association of Nurse Anesthetists SN - 00946354 AB - Herbal use may be associated with increased morbidity and mortality as a consequence of interactions with anesthetic agents. The purpose of this study was to investigate the effects on emergence from isoflurane anesthesia using a combination of the herb valerian and midazolam compared with valerian alone, midazolam alone, and no additional drug-herb treatment in Sprague-Dawley rats. We assigned 32 male Sprague-Dawley rats to 1 of 4 groups: (1) isoflurane alone, (2) isoflurane plus valerian, (3) isoflurane plus midazolam, and (4) isoflurane plus a combination of valerian and midazolam. Thirty minutes after treatment, animals underwent a standard laparotomy. The time in seconds from discontinuation of isoflurane to the time the animal righted itself and took I step was recorded as emergence time. A 1-way analysis of variance with a post hoc Scheffe procedure revealed that animals given a combination of midazolam and valerian took significantly longer to emerge from anesthesia (F = 58.21; P < .00) compared with all other groups. Awareness of possible interactions of herbals with conventional anesthetics is important so that potential problems may be recognized and treated. These data demonstrate the need for continued research concerning the effects of herbals and their potential for interaction with anesthetics. [ABSTRACT FROM AUTHOR] AB - Copyright of AANA Journal is the property of American Association of Nurse Anesthetists and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANESTHESIA KW - ANESTHESIOLOGY KW - RATTUS norvegicus KW - RATS KW - MEDICINAL plants KW - MIDAZOLAM KW - ISOFLURANE KW - Benzodiazepines KW - emergence KW - rats KW - valerian N1 - Accession Number: 27867183; Chaplin Jr., Robert L. 1 Jedynak, Jeffrey 2 Johnson, David 3 Helter, Donna 4 Shovelton, Lawrence Garrett, Normalynn 5; Affiliation: 1: US Air Force Academy, Colorado 2: Andrews Air Force Base, Maryland 3: Keesler Air Force Base, Mississippi 4: Travis Air Force Base, California 5: Fort Sam, Houston, Texas; Source Info: Dec2007, Vol. 75 Issue 6, p431; Subject Term: ANESTHESIA; Subject Term: ANESTHESIOLOGY; Subject Term: RATTUS norvegicus; Subject Term: RATS; Subject Term: MEDICINAL plants; Subject Term: MIDAZOLAM; Subject Term: ISOFLURANE; Author-Supplied Keyword: Benzodiazepines; Author-Supplied Keyword: emergence; Author-Supplied Keyword: rats; Author-Supplied Keyword: valerian; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27867183&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nesterov, Vladimir N. AU - Sarkisov, Sergey S. AU - Curley, Michael J. AU - Urbas, Augustine AU - Ruiz, Tania T1 - 3,5-Bis[4-(diethylamino)benzylidene]-1,1-dimethyl-4-oxopiperidinium iodide: a prospective biophotonic material. JO - Acta Crystallographica: Section E (Wiley-Blackwell) JF - Acta Crystallographica: Section E (Wiley-Blackwell) Y1 - 2007/12// VL - 63 IS - 12 M3 - Article SP - o4784 EP - sup15 SN - 16005368 AB - In the title compound, C29H40N3O+·I-, the heterocyclic ring in the two independent molecules exhibits a sofa conformation, with the N atom deviating from the plane through the other ring atoms. The dihedral angles between the planar part of the heterocycle and the two almost planar fragments, which include the benzene rings and bridging atoms, are 29.21 (9)/5.43 (8) and 21.44 (10)/25.17 (10)° in the two independent molecules. Weak intermolecular C-H…O and C-H…I contacts link the cations and anions in the crystal structure. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Crystallographica: Section E (Wiley-Blackwell) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATOMS KW - IONS KW - CATIONS KW - HYDROGEN bonding KW - PHYSICAL & theoretical chemistry KW - AROMATIC compounds KW - data-to-parameter ratio = 15.6 KW - mean σ(C-C) = 0.004 Å KW - R factor = 0.038 KW - single-crystal X-ray study KW - T = 100 K KW - wR factor = 0.089 N1 - Accession Number: 31911431; Nesterov, Vladimir N. 1; Email Address: vnesterov@nmhu.edu Sarkisov, Sergey S. 2 Curley, Michael J. 3 Urbas, Augustine 4 Ruiz, Tania 1; Affiliation: 1: Department of Natural Sciences, New Mexico Highlands University, Las Vegas, NM 87701, USA 2: SSS Optical Technologies, LLC, 515 Sparkman Drive, Suite 122, H untsville, AL 35816, USA 3: Department of Physics, Alabama A&M University, Normal, AL 35762, USA 4: Air Force Research Laboratory/MLPJ, 3005 Hobson Way Building 651, Wright Patterson Air Force Base, OH 45433-7702, USA; Source Info: Dec2007, Vol. 63 Issue 12, po4784; Subject Term: ATOMS; Subject Term: IONS; Subject Term: CATIONS; Subject Term: HYDROGEN bonding; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: AROMATIC compounds; Author-Supplied Keyword: data-to-parameter ratio = 15.6; Author-Supplied Keyword: mean σ(C-C) = 0.004 Å; Author-Supplied Keyword: R factor = 0.038; Author-Supplied Keyword: single-crystal X-ray study; Author-Supplied Keyword: T = 100 K; Author-Supplied Keyword: wR factor = 0.089; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 17p; Illustrations: 5 Diagrams, 5 Charts; Document Type: Article L3 - 10.1107/S1600536807058667 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31911431&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pomeroy, Steven A. T1 - Science in Flux: NASA's Nuclear Program at Plum Brook Station, 1955-2005. JO - Air Power History JF - Air Power History Y1 - 2007///Winter2007 VL - 54 IS - 4 M3 - Book Review SP - 52 EP - 53 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "Science in Flux: NASA's Nuclear Program at Plum Brook Station, 1955-2005," by Mark D. Bowles. KW - NUCLEAR industry KW - NONFICTION KW - BOWLES, Mark D. KW - SCIENCE in Flux: NASA's Nuclear Program at Plum Brook Station 1955-2005 (Book) N1 - Accession Number: 27888494; Pomeroy, Steven A. 1; Affiliation: 1: Deputy Head, Department of Military Strategic Studies, United States Air Force Academy; Source Info: Winter2007, Vol. 54 Issue 4, p52; Subject Term: NUCLEAR industry; Subject Term: NONFICTION; Reviews & Products: SCIENCE in Flux: NASA's Nuclear Program at Plum Brook Station 1955-2005 (Book); NAICS/Industry Codes: 221113 Nuclear Electric Power Generation; People: BOWLES, Mark D.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27888494&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mastroianni, George R. T1 - Zimbardo's Apple. JO - Analyses of Social Issues & Public Policy JF - Analyses of Social Issues & Public Policy Y1 - 2007/12// VL - 7 IS - 1 M3 - Book Review SP - 251 EP - 254 PB - Wiley-Blackwell SN - 15297489 AB - The article reviews the book "The Lucifer Effect," by Phillip G. Zimbardo. KW - STANFORD prison experiment KW - NONFICTION KW - ZIMBARDO, Phillip G. KW - LUCIFER Effect, The (Book) N1 - Accession Number: 27785086; Mastroianni, George R. 1; Email Address: George.Mastroinni@usafa.edu; Affiliation: 1: Professor of psychology, United States Air Force Academy, Colorado Springs, Colorado; Source Info: Dec2007, Vol. 7 Issue 1, p251; Subject Term: STANFORD prison experiment; Subject Term: NONFICTION; Reviews & Products: LUCIFER Effect, The (Book); People: ZIMBARDO, Phillip G.; Number of Pages: 4p; Document Type: Book Review L3 - 10.1111/j.1530-2415.2007.00142.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27785086&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vibert, Dominique AU - Redfield, Robin C. AU - Häusler, Rudolf T1 - Benign Paroxysmal Positional Vertigo in Mountain Bikers. JO - Annals of Otology, Rhinology & Laryngology JF - Annals of Otology, Rhinology & Laryngology Y1 - 2007/12// VL - 116 IS - 12 M3 - Article SP - 887 EP - 890 SN - 00034894 AB - We evaluated 4 men who had benign paroxysmal positional vertigo (BPPV) that occurred several hours after intensive mountain biking but without head trauma. The positional maneuvers in the planes of the posterior and horizontal canals elicited BPPV, as well as transitory nystagmus. This was attributed to both the posterior and horizontal semicircular canals (SCCs) on the left side in 1 patient, in these 2 SCCs on the right side in another patient, and to the right posterior SCC in the other 2 patients. The symptoms disappeared after physiotherapeutic maneuvers in 2 patients and spontaneously in the other 2 patients. Cross-country or downhill mountain biking generates frequent vibratory impacts, which are only partially filtered through the suspension fork and the upper parts of the body. Biomechanically, during a moderate jump, before landing, the head is subjected to an acceleration close to negative 1g, and during impact it is subjected to an upward acceleration of more than 2g. Repeated acceleration-deceleration events during intensive off-road biking might generate displacement and/or dislocation of otoconia from the otolithic organs, inducing the typical symptoms of BPPV. This new cause of posttraumatic BPPV should be considered as an injury of minor severity attributed to the practice of mountain biking. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of Otology, Rhinology & Laryngology is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VERTIGO KW - DIZZINESS KW - HEAD injuries -- Complications KW - PATIENTS KW - PHYSICAL therapy KW - WOUNDS & injuries KW - benign paroxysmal positional vertigo KW - inner ear KW - mountain bike KW - otoconia KW - sport KW - vertigo N1 - Accession Number: 28095589; Vibert, Dominique 1 Redfield, Robin C. 2 Häusler, Rudolf 1; Affiliation: 1: Department of Otorhinolaryngology—Head and Neck Surgery, Inselspital, University of Berne, Berne, Switzerland 2: Department of Engineering Mechanics, United States Air Force Academy, Colorado Springs, Colorado; Source Info: Dec2007, Vol. 116 Issue 12, p887; Subject Term: VERTIGO; Subject Term: DIZZINESS; Subject Term: HEAD injuries -- Complications; Subject Term: PATIENTS; Subject Term: PHYSICAL therapy; Subject Term: WOUNDS & injuries; Author-Supplied Keyword: benign paroxysmal positional vertigo; Author-Supplied Keyword: inner ear; Author-Supplied Keyword: mountain bike; Author-Supplied Keyword: otoconia; Author-Supplied Keyword: sport; Author-Supplied Keyword: vertigo; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28095589&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wisman, D.L. AU - Marcum, S.D. AU - Ganguly, B.N. T1 - Electrical control of the thermodiffusive instability in premixed propane–air flames JO - Combustion & Flame JF - Combustion & Flame Y1 - 2007/12// VL - 151 IS - 4 M3 - Article SP - 639 EP - 648 SN - 00102180 AB - Abstract: This work focuses upon the effects of DC electric fields on the stability of downward propagating atmospheric pressure premixed propane–air flames under experimental conditions that provide close coupling of the electric field to the flame. With the appropriate electrode geometry, modest applied voltages are shown to drive a stable conical flame first into a wrinkled-laminar flamelet geometry, and then further toward either a highly unstable distributed flamelet regime or a collective oscillation of the flame front. Applied potentials up through over a 40-mm gap encompassing the flame front have been used to force the above transition sequence in flames with equivalence ratios between 0.8 and 1.3 and flow velocities up to 1.7 m/s. Experiments are reported that characterize the field-induced changes in the geometry of the reaction zone and the structure of the resulting unstable flame. The former is quantified by combustion intensity enhancement estimates derived from high-speed two-dimensional direct and spectroscopic imaging of chemiluminescence signals. The flame fluid mechanical response to the applied field, brought about by forcing positive flame ions counter to the flow, drives the effective flame Lewis number to values suitable for the onset of the thermodiffusive instability, even near stoichiometric conditions. Possible field-driven flame ion recombination chemistry that would produce light reactants near the burner head and precipitate the onset of the thermodiffusive instability is proposed. Electrical measurements are also reported that establish that minimal electrical power input is required to produce the observed flame instabilities. Current continuity-based calculations allow estimates of the level of deficient light reactant necessary to cause the flame to become unstable. This applied-electric-field-induced modification of the thermodiffusive effect could serve as a potentially attractive means of controlling flame fluid-mechanical characteristics and validating combustion instability models over a wide range of equivalence ratios. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC fields KW - ELECTROMAGNETIC fields KW - ORGANIC compounds KW - DIAGNOSTIC imaging KW - Electric field KW - Flame speed KW - Hydrocarbon combustion KW - Ionic recombination KW - Thermodiffusive instability N1 - Accession Number: 27641103; Wisman, D.L. 1 Marcum, S.D. 1 Ganguly, B.N. 2; Email Address: biswa.ganguly@wpafb.af.mil; Affiliation: 1: Department of Physics, Miami University, Oxford, OH 45056, USA 2: Air Force Research Laboratory, Wright–Patterson AFB, OH 45433, USA; Source Info: Dec2007, Vol. 151 Issue 4, p639; Subject Term: ELECTRIC fields; Subject Term: ELECTROMAGNETIC fields; Subject Term: ORGANIC compounds; Subject Term: DIAGNOSTIC imaging; Author-Supplied Keyword: Electric field; Author-Supplied Keyword: Flame speed; Author-Supplied Keyword: Hydrocarbon combustion; Author-Supplied Keyword: Ionic recombination; Author-Supplied Keyword: Thermodiffusive instability; NAICS/Industry Codes: 621512 Diagnostic Imaging Centers; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.combustflame.2007.06.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27641103&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bhandari, Y. AU - Sarkar, S. AU - Groeber, M. AU - Uchic, M.D. AU - Dimiduk, D.M. AU - Ghosh, S. T1 - 3D polycrystalline microstructure reconstruction from FIB generated serial sections for FE analysis JO - Computational Materials Science JF - Computational Materials Science Y1 - 2007/12// VL - 41 IS - 2 M3 - Article SP - 222 EP - 235 SN - 09270256 AB - Abstract: This paper develops a comprehensive methodology for generating realistic 3D polycrystalline microstructures followed by discretization into a 3D tetrahedral mesh for finite element (FE) analysis. With input data on crystallographic orientations for a series of grain sections, created by a dual beam focused ion beam-scanning electron microscope (DB-FIB) system, the reconstruction method uses primitives in CAD modeling based on hierarchical geometrical representation. It involves steps of data cleanup, interface point identification, parametric polynomial and NURBS function based surface patch reconstruction, generalized cell-decomposition, geometric defeaturing and gap-overlap removal. The implementation of the entire procedure is done with the user-programming facilities of a commercial CAD package Unigraphics NX3. The reconstruction algorithms are validated with various error criteria. Subsequently, a finite mesh generator is developed to consistently discretize the reconstructed polycrystalline domain into a finite element mesh with resolution control that is necessary for meaningful computational analysis in microstructure–property evaluation. The mesh generator is enriched with mesh quality improvement and degree of freedom reduction tools. [Copyright &y& Elsevier] AB - Copyright of Computational Materials Science is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - FINITE element method KW - CRYSTALLOGRAPHY KW - SCANNING electron microscopes KW - 3D microstructure reconstruction KW - FIB-SEM KW - Mesh generation KW - NURBS KW - Parametric surface N1 - Accession Number: 27445295; Bhandari, Y. 1 Sarkar, S. 1 Groeber, M. 1 Uchic, M.D. 2 Dimiduk, D.M. 2 Ghosh, S. 3; Email Address: ghosh.5@osu.edu; Affiliation: 1: Computational Mechanics Research Laboratory, Department of Mechanical Engineering, The Ohio State University, OH, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMD, Wright-Patterson AFB, OH 45433-7817, USA 3: Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43202, USA; Source Info: Dec2007, Vol. 41 Issue 2, p222; Subject Term: MICROSTRUCTURE; Subject Term: FINITE element method; Subject Term: CRYSTALLOGRAPHY; Subject Term: SCANNING electron microscopes; Author-Supplied Keyword: 3D microstructure reconstruction; Author-Supplied Keyword: FIB-SEM; Author-Supplied Keyword: Mesh generation; Author-Supplied Keyword: NURBS; Author-Supplied Keyword: Parametric surface; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.commatsci.2007.04.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27445295&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stanek, Michael J. AU - Visbal, Miguel R. AU - Rizzetta, Donald P. AU - Rubin, Stanley G AU - Khosla, Prem K. T1 - On a mechanism of stabilizing turbulent free shear layers in cavity flows JO - Computers & Fluids JF - Computers & Fluids Y1 - 2007/12// VL - 36 IS - 10 M3 - Article SP - 1621 EP - 1637 SN - 00457930 AB - Turbulent free shear flows are subject to the well-known Kelvin–Helmholtz type [Panton RL. Incompressible flow. John Wiley and Sons; 1984. p. 675] instability, and it is well-known that any free shear flow which approximates a thin vorticity layer will be unstable to a wide range of amplitudes and frequencies of disturbance. In fact, much of what constitutes flow control in turbulent free shear layers consists of feeding a prescribed destabilizing disturbance to these layers. The question in the control of free shear flows is not whether the shear layer will be stable, but whether you can influence how the layer becomes unstable. In most cases, since these flows are so receptive to forcing input, and naturally tend toward instability, large changes in flow conditions can be achieved with very small amplitude periodic inputs. Recently, it has been discovered that turbulent free shear flows can also be stabilized using periodic forcing. This is, at first glance, counter-intuitive, considering our long history of considering these flows to be very unstable to forcing input. It is a phenomenon not described in modern fluid dynamic text books. The forcing required to achieve this effect (which we will call turbulent shear layer stabilization) is of a much higher amplitude and frequency than the more traditional type of shear layer flow control effect seen in the literature (which we will call turbulent shear layer destabilization). A numerical study is undertaken to investigate the effect of frequency of pulsed mass injection on the nature of stabilization, destabilization and acoustic suppression in high speed cavity flows. An implicit, 2nd-order in space and time flow solver, coupled with a recently developed hybrid RANS-LES (Reynolds Averaged Navier Stokes-Large Eddy Simulation) turbulence model by Nichols and Nelson [Nichols RH, Nelson CC. Weapons bay acoustic predictions using a multi-scale turbulence model. In: Proceedings of the ITEA 2001 aircraft-stores compatibility symposium, March 2001], is utilized in a Chimera-based parallel format. This tool is used to numerically simulate both an unsuppressed cavity in resonance, as well as the effect of mass-addition pulsed jet flow control on cavity flow physics and ultimately, cavity acoustic levels. Frequency (and in a limited number of cases, amplitude) of pulse is varied, from 0Hz (steady) up to 5000Hz. The change in the character of the flow control effect as pulsing frequency is changed is described, and linked to changes in acoustic levels. Limited comparison to 1/10th scale experiments is presented. The observed local stabilization of the cavity turbulent shear layer, when subjected to high frequency pulsed blowing, is shown in simulation to be the result of a violent instability and breakdown of a pair of opposite sign vortical structures created with each high frequency “pulse”. This unique shear layer stabilization behavior is only observed in simulation above a certain critical pulsing frequency. Below this critical frequency, pulsing is shown in simulation to provide little benefit with respect to suppression of high cavity acoustic levels. [Copyright &y& Elsevier] AB - Copyright of Computers & Fluids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHEAR flow KW - TURBULENCE KW - FLUID dynamics KW - EDDIES KW - NAVIER-Stokes equations N1 - Accession Number: 26570331; Stanek, Michael J. 1; Email Address: Michael.Stanek@wpafb.af.mil Visbal, Miguel R. 1 Rizzetta, Donald P. 1 Rubin, Stanley G 2 Khosla, Prem K. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH, United States 2: University of Cincinnati, Cincinnati, OH, United States; Source Info: Dec2007, Vol. 36 Issue 10, p1621; Subject Term: SHEAR flow; Subject Term: TURBULENCE; Subject Term: FLUID dynamics; Subject Term: EDDIES; Subject Term: NAVIER-Stokes equations; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.compfluid.2007.03.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26570331&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schrand, Amanda M. AU - Dai, Liming AU - Schlager, John J. AU - Hussain, Saber M. AU - Osawa, Eiji T1 - Differential biocompatibility of carbon nanotubes and nanodiamonds JO - Diamond & Related Materials JF - Diamond & Related Materials Y1 - 2007/12// VL - 16 IS - 12 M3 - Article SP - 2118 EP - 2123 SN - 09259635 AB - Abstract: Carbon nanomaterials are being produced in increasingly larger quantities for many applications due to their novel characteristics such as enhanced thermal, electrical, mechanical, and biological properties. However, there is a lack of data on biological interactions to assess their biocompatibility before they will be accepted as non-toxic in industrial or biomedical arenas. In the present study, we examined both neuronal and lung cell lines for biocompatibility in aqueous suspensions of carbon nanomaterials, such as nanodiamonds (NDs), single- and multi-walled carbon nanotubes (SWNTs, MWNTs), and carbon black (CB), at concentrations ranging from 25–100 μg/ml for 24 h. Our results indicated that these carbon nanomaterials displayed differential biocompatibility in these two different cell lines. The greatest biocompatibility was found after incubation with NDs and both cell types followed the trend: ND>CB>MWNT>SWNT. Macrophages were found to be more sensitive to the nanomaterials with up to five times the generation of reactive oxygen species after incubation with MWNTs or SWNTs. However, there was a lack of ROS generation from either cell line incubated with ND-raw, as well as intact mitochondrial membranes, suggesting that NDs may be useful as a benchmark nanoparticle non-toxic control in replacement of CB, and should be further investigated for use in medical applications. [Copyright &y& Elsevier] AB - Copyright of Diamond & Related Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOCOMPATIBILITY KW - DIAMONDS KW - NANOPARTICLES KW - CARBON compounds KW - Carbon nanomaterials KW - Cell culture KW - MMP KW - MTT KW - ROS KW - Viability N1 - Accession Number: 27667641; Schrand, Amanda M. 1,2 Dai, Liming 1; Email Address: ldai@udayton.edu Schlager, John J. 2 Hussain, Saber M. 2; Email Address: saber.hussain@wpafb.af.mil Osawa, Eiji 3; Affiliation: 1: University of Dayton, Department of Chemical and Materials Engineering, 300 College Park, Dayton, OH 45469-0160, USA 2: Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-5707, USA 3: NanoCarbon Research Institute, Ltd., Kashiwa-no-ha, Kashiwa, Chiba 277-0882, Japan; Source Info: Dec2007, Vol. 16 Issue 12, p2118; Subject Term: BIOCOMPATIBILITY; Subject Term: DIAMONDS; Subject Term: NANOPARTICLES; Subject Term: CARBON compounds; Author-Supplied Keyword: Carbon nanomaterials; Author-Supplied Keyword: Cell culture; Author-Supplied Keyword: MMP; Author-Supplied Keyword: MTT; Author-Supplied Keyword: ROS; Author-Supplied Keyword: Viability; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 423940 Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 414410 Jewellery and watch merchant wholesalers; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.diamond.2007.07.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27667641&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davis, Joanne L. AU - Byrd, Patricia AU - Rhudy, Jamie L. AU - Wright, David C. T1 - Characteristics of Chronic Nightmares in a Trauma-Exposed Treatment-Seeking Sample. JO - Dreaming JF - Dreaming Y1 - 2007/12// VL - 17 IS - 4 M3 - Article SP - 187 EP - 198 SN - 10530797 AB - Chronic nightmares pose a significant problem for many individuals affected by trauma. The present study attempts to extend current knowledge on the nature, characteristics, and associated sequelae of chronic nightmares. Data were collected from 94 trauma-exposed, treatment-seeking participants (74 women and 20 men). These data suggest that most participants reported their nightmares to be similar or dissimilar to their traumatic experience rather than exact replications (replicative). Not surprisingly, though, nightmare-related distress was positively related to the degree of similarity between their nightmare and their trauma, with replicative nightmares eliciting the greatest distress. Persons with a current diagnosis of posttraumatic stress disorder (PTSD) were more likely to report problems related to nightmares and sleep disturbance than persons without current PTSD. Nonetheless, even after controlling for PTSD-related symptomatology, frequency and severity of nightmares significantly predicted some distress outcomes (e.g., poor sleep quality), suggesting that nightmares contribute to psychological distress above and beyond PTSD symptoms. Implications for future research, and for the treatment of nightmares and PTSD, are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Dreaming is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POST-traumatic stress disorder KW - SLEEP disorders KW - DISTRESS (Psychology) KW - NIGHTMARES KW - DIAGNOSIS KW - PSYCHOLOGICAL aspects KW - nightmares KW - posttraumatic stress disorder KW - trauma N1 - Accession Number: 28119830; Davis, Joanne L. 1; Email Address: Joanne-davis@utulsa.edu Byrd, Patricia 1 Rhudy, Jamie L. 1 Wright, David C. 2; Affiliation: 1: Department of Psychology, University Of Tulsa 2: United States Air Force; Source Info: Dec2007, Vol. 17 Issue 4, p187; Subject Term: POST-traumatic stress disorder; Subject Term: SLEEP disorders; Subject Term: DISTRESS (Psychology); Subject Term: NIGHTMARES; Subject Term: DIAGNOSIS; Subject Term: PSYCHOLOGICAL aspects; Author-Supplied Keyword: nightmares; Author-Supplied Keyword: posttraumatic stress disorder; Author-Supplied Keyword: trauma; Number of Pages: 11p; Illustrations: 2 Charts; Document Type: Article L3 - 10.1037/1053-0797.17.4.187 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28119830&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wilson, Glenn F. AU - Russell, Christopher A. T1 - Performance enhancement in an uninhabited air vehicle task using psychophysiologically determined adaptive aiding. JO - Human Factors JF - Human Factors Y1 - 2007/12// VL - 49 IS - 6 M3 - journal article SP - 1005 EP - 1018 SN - 00187208 AB - Objective: We show that psychophysiologically driven real-time adaptive aiding significantly enhances performance in a complex aviation task. A further goal was to assess the importance of individual operator capabilities when providing adaptive aiding.Background: Psychophysiological measures are useful for monitoring cognitive workload in laboratory and real-world settings. They can be recorded without intruding into task performance and can be analyzed in real time, making them candidates for providing operator functional state estimates. These estimates could be used to determine if and when system intervention should be provided to assist the operator to improve system performance.Methods: Adaptive automation was implemented while operators performed an uninhabited aerial vehicle task. Psychophysiological data were collected and an artificial neural network was used to detect periods of high and low mental workload in real time. The high-difficulty task levels used to initiate the adaptive automation were determined separately for each operator, and a group-derived mean difficulty level was also used.Results: Psychophysiologically determined aiding significantly improved performance when compared with the no-aiding conditions. Improvement was greater when adaptive aiding was provided based on individualized criteria rather than on group-derived criteria. The improvements were significantly greater than when the aiding was randomly provided.Conclusion: These results show that psychophysiologically determined operator functional state assessment in real time led to performance improvement when included in closed loop adaptive automation with a complex task.Application: Potential future applications of this research include enhanced workstations using adaptive aiding that would be driven by operator functional state. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER integrated manufacturing systems KW - APPLIED psychology KW - HUMAN comfort KW - ERGONOMICS KW - HUMAN-machine relationship KW - EFFECT of environment on human beings KW - MANUFACTURING processes -- Automation KW - EMPLOYEES -- Workload KW - INDUSTRIALIZATION N1 - Accession Number: 27544072; Wilson, Glenn F. 1; Email Address: glennwilson@woh.ww.com Russell, Christopher A. 1; Affiliation: 1: Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio; Source Info: Dec2007, Vol. 49 Issue 6, p1005; Subject Term: COMPUTER integrated manufacturing systems; Subject Term: APPLIED psychology; Subject Term: HUMAN comfort; Subject Term: ERGONOMICS; Subject Term: HUMAN-machine relationship; Subject Term: EFFECT of environment on human beings; Subject Term: MANUFACTURING processes -- Automation; Subject Term: EMPLOYEES -- Workload; Subject Term: INDUSTRIALIZATION; NAICS/Industry Codes: 926110 Administration of General Economic Programs; Number of Pages: 14p; Document Type: journal article L3 - 10.1518/001872007X249875 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27544072&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patterson, Robert AU - Winterbottom, Marc AU - Pierce, Byron AU - Fox, Robert T1 - Binocular rivalry and head-worn displays. JO - Human Factors JF - Human Factors Y1 - 2007/12// VL - 49 IS - 6 M3 - journal article SP - 1083 EP - 1096 SN - 00187208 AB - Objective: We provide a review and analysis of much of the published literature on binocular rivalry that is relevant to the design and use of head-worn displays (HWDs).Background: This review draws heavily from both the basic vision literature and applied HWD literature in order to help provide insight for minimizing the effects of binocular rivalry when HWDs are worn.Method: Included in this review are articles and books found cited in other works as well as articles and books obtained from an Internet search.Results: Issues discussed and summarized are (a) characteristics of binocular rivalry, (b) stimulus factors affecting rivalry, (c) cognitive variables affecting rivalry, and (d) tasks affected by rivalry.Conclusion: This paper offers a set of recommendations for minimizing the effects of binocular rivalry when HWDs are used as well as recommendations for future research.Application: Considerations of the basic vision literature on binocular rivalry will provide insight for future design solutions for HWDs. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VISUAL perception KW - BINOCULAR rivalry KW - BINOCULAR vision KW - VISUAL learning KW - PEDESTRIANS KW - CITY traffic KW - STREET signs KW - AGE groups KW - TRAFFIC safety N1 - Accession Number: 27544079; Patterson, Robert 1; Email Address: rpatter@mail.wsu.edu Winterbottom, Marc 2 Pierce, Byron 2 Fox, Robert 3; Affiliation: 1: Washington State University Pullman, Washington 2: Air Force Research Laboratory, Mesa, Arizona 3: Vanderbilt University, Nashville, Tennessee; Source Info: Dec2007, Vol. 49 Issue 6, p1083; Subject Term: VISUAL perception; Subject Term: BINOCULAR rivalry; Subject Term: BINOCULAR vision; Subject Term: VISUAL learning; Subject Term: PEDESTRIANS; Subject Term: CITY traffic; Subject Term: STREET signs; Subject Term: AGE groups; Subject Term: TRAFFIC safety; NAICS/Industry Codes: 237310 Highway, Street, and Bridge Construction; Number of Pages: 14p; Document Type: journal article L3 - 10.1518/001872007X249947 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27544079&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, Kristopher T. T1 - Efficient Recursive Generation of the Scalar Spherical Multipole Translation Matrix. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2007/12// VL - 55 IS - 12 M3 - Article SP - 3484 EP - 3494 SN - 0018926X AB - New efficient recursive procedures for generating the translation matrix of the scalar spherical multipole field are describd. They are based on a new set of recurrence relations that resuit when the angular-momentum operator is applied to the spherical multipole field. Their efficiency and accuracy are compared analytically and through a computer experiment with those of the brute-force method and an existing recursive procedure. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNAS (Electronics) KW - RECURSIVE functions KW - SCATTERING (Physics) KW - ELECTROMAGNETIC fields KW - ANTENNA radiation patterns KW - ELECTRIC fields KW - DATA transmission systems KW - ANTENNAS (Electronics) -- Design & construction KW - TELECOMMUNICATION KW - Antenna theory KW - efficient computation KW - recursive relations KW - scattering KW - spherical multipole fields KW - translation matrix N1 - Accession Number: 27973831; Kim, Kristopher T. 1; Email Address: trout@ieee.org; Affiliation: 1: Electromagnetic Scattering Branch, Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731-3010, U.S.A.; Source Info: Dec2007, Vol. 55 Issue 12, p3484; Subject Term: ANTENNAS (Electronics); Subject Term: RECURSIVE functions; Subject Term: SCATTERING (Physics); Subject Term: ELECTROMAGNETIC fields; Subject Term: ANTENNA radiation patterns; Subject Term: ELECTRIC fields; Subject Term: DATA transmission systems; Subject Term: ANTENNAS (Electronics) -- Design & construction; Subject Term: TELECOMMUNICATION; Author-Supplied Keyword: Antenna theory; Author-Supplied Keyword: efficient computation; Author-Supplied Keyword: recursive relations; Author-Supplied Keyword: scattering; Author-Supplied Keyword: spherical multipole fields; Author-Supplied Keyword: translation matrix; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 517911 Telecommunications Resellers; NAICS/Industry Codes: 517919 All Other Telecommunications; NAICS/Industry Codes: 811213 Communication Equipment Repair and Maintenance; NAICS/Industry Codes: 517910 Other telecommunications; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TAP.2007.910358 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27973831&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McClory, John W. AU - Petrosky, James C. AU - Sattler, James M. AU - Jarzen, Thomas A. T1 - An Analysis of the Effects of Low-Energy Electron Irradiation of A1GaN/GaN HFETs. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2007/12//Dec2007 Part 1 of 2 VL - 54 IS - 6 M3 - Article SP - 1946 EP - 1952 SN - 00189499 AB - The effects of low energy (0.45 MeV) electron radiation on the gate and drain currents of Al0.27 Ga0.73N/GaN HFETs are investigated using IV and CV measurements. Following irradiation, the gate and drain currents increase at low temperatures and reach a saturation level. The gate leakage currents do not fully account for the drain current increase. Following a room temperature anneal, the gate and drain currents return to pre-irradiation levels. These results are explained by the buildup of positive charge in the AlGaN layer at low temperature and traps formed via a complexing precursor in the AlGaN layer near the interface. The positive charge increases the carrier concentration in the 2DEG and hence the drain current. The traps act as trap-assisted-tunneling centers that increase the gate leakage current. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATION KW - ELECTRONS KW - IRRADIATION KW - GALLIUM nitride KW - FIELD-effect transistors KW - TRANSISTORS KW - Electron irradiation KW - gallium nitride KW - heterojunction field effect transistors N1 - Accession Number: 28153153; McClory, John W. 1; Email Address: john.mcclory@afit.edu Petrosky, James C. 2; Email Address: james.petrosky@afit.edu Sattler, James M. 3; Email Address: James.Sattler@hanscom.af.mil Jarzen, Thomas A. 4; Email Address: thomas.jarzen@us.army.mil; Affiliation: 1: United States Army and the Air Force Institute of Technology, WPAFB, OH 45322 USA 2: Air Force Institute of Technology, WPAFB, 01-145322 USA 3: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA 01731-2301 USA 4: Defense Threat Reduction Agency, Fort Belvoir, VA 22060 USA; Source Info: Dec2007 Part 1 of 2, Vol. 54 Issue 6, p1946; Subject Term: RADIATION; Subject Term: ELECTRONS; Subject Term: IRRADIATION; Subject Term: GALLIUM nitride; Subject Term: FIELD-effect transistors; Subject Term: TRANSISTORS; Author-Supplied Keyword: Electron irradiation; Author-Supplied Keyword: gallium nitride; Author-Supplied Keyword: heterojunction field effect transistors; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 7p; Illustrations: 3 Diagrams, 2 Charts, 8 Graphs; Document Type: Article L3 - 10.1109/TNS.2007.910121 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28153153&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ginet, Gregory P. AU - Dichter, Bronislaw K. AU - Brautigam, Donald H. AU - Madden, Dan T1 - Proton Flux Anisotropy in Low Earth Orbit. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2007/12//Dec2007 Part 1 of 2 VL - 54 IS - 6 M3 - Article SP - 1975 EP - 1980 SN - 00189499 AB - Proton flux anisotropy as a function of altitude in the South Atlantic Anomaly is investigated using data from the Compact Environment Anomaly Sensor (CEASE) flown onboard the Tri-Service Experiment-S (TSX-5) satellite from June 2000 to July 2006. In a 410 km × 1710 km, 69 degree inclination orbit, TSX-5 spanned a broad range of the low Earth orbit regime. Using measurements of total dose, integral energy flux >40 MeV and the differential flux at 40 MeV sorted into 3 degree latitude × 3 degree longitude × 50 km altitide bins and averaged over the entire mission, the components arising from eastward and westward traveling protons have been determined in areas of the SAA where CEASE detection efficiency is not compromised. For the first time, ratios of these components have been compared to predictions of East-West effect models above 400 km. There is good agreement in general with the anisotropy becoming apparent at approximately 1200 km (moving down) and increasing rapidly starting at approximately 1000 km, the magnitude and rate depending on location within the anomaly. Measurements of the differential flux at 40 MeV are compared to predictions of standard radiation belt models as a function of altitude and found to be substantially higher in magnitude than AP8, though a comprehensive survey has not yet been performed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANISOTROPY KW - EARTH (Planet) KW - ORBITS KW - PROTONS KW - RADIATION belts KW - ASTROPHYSICAL radiation KW - ORBIT KW - Radiation belts KW - radiation effects KW - South Atlantic anomaly N1 - Accession Number: 28153157; Ginet, Gregory P. 1; Email Address: afrl.rvb.pa@hanscom.af.mil Dichter, Bronislaw K. 2; Email Address: dichter@assurtech.com Brautigam, Donald H. 1; Email Address: afrl.rvb.pa@hanscom.af.mil Madden, Dan 3; Email Address: afrl.rvb.pa@hanscom.af.mil; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731 USA 2: Assurance Technology Corporation, Carlisle, MA 01741 USA 3: Institute for Scientific Research, Boston College, Boston, MA 02467 USA; Source Info: Dec2007 Part 1 of 2, Vol. 54 Issue 6, p1975; Subject Term: ANISOTROPY; Subject Term: EARTH (Planet); Subject Term: ORBITS; Subject Term: PROTONS; Subject Term: RADIATION belts; Subject Term: ASTROPHYSICAL radiation; Subject Term: ORBIT; Author-Supplied Keyword: Radiation belts; Author-Supplied Keyword: radiation effects; Author-Supplied Keyword: South Atlantic anomaly; Number of Pages: 6p; Illustrations: 7 Graphs; Document Type: Article L3 - 10.1109/TNS.2007.910041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28153157&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Krause, Linda Habash AU - Cooke, David L. AU - Enloe, C. L. AU - Font, Gabriel I. AU - Lai, Shu T. AU - McHarg, M. G. AU - Putz, Victor T1 - Bootstrap Surface Charging at GEO: Modeling and On-Orbit Observations From the DSCS-III B7 Satellite. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2007/12//Dec2007 Part 1 of 2 VL - 54 IS - 6 M3 - Article SP - 1997 EP - 2003 SN - 00189499 AB - We present an analysis of the charging interactivity between surrounding surface materials aboard a spacecraft at geosynchronous altitudes. In particular, bootstrap charging of a small surface may occur if is surrounded by a large negatively charged surface. Here, a negative potential barrier forms above the small surface, resulting in suppression of photo- and secondary electron emission from that surface. Additionally, the small sur- face experiences an enhancement of the collection of the photo- and secondary electrons emitted from the surrounding surface. This mechanism results in the charging of the small surface to higher levels than that of the patch in isolation, and in many cases the final potential will reach that of the potential of the larger surrounding surface. With this study we examine bootstrap charging behavior with model data and with data collected on orbit. We have modeled the DSCS-III B7 geosynchronous satellite with realistic geometry and spacecraft materials. Additionally, a previous study has shown that bootstrap charging has been observed on the DSCS-III B7 geosynchronous spacecraft. Both Astroquartz and Kapton cloth patches charged up to the frame potential of the satellite during periods of severe frame charging. The results of modeling bootstrap charging of a small Kapton patch floating relative to the DSCS-HI frame fixed at a potential of -1,000 V show that the patch will indeed charge up negatively to match the frame potential, with the temporal increase in negative potential following an exponential time characteristic. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles KW - ELECTRON emission KW - ELECTRIC discharges through gases KW - ORBITS KW - GEOSTATIONARY satellites KW - ARTIFICIAL satellites KW - Bootstrap charging KW - Defense Satellite Communication System (DSCS-III) KW - differential charging KW - GEO satellite charging KW - spacecraft surface charging N1 - Accession Number: 28153161; Krause, Linda Habash 1; Email Address: Linda.Krause@usafa.af.mil Cooke, David L. 2 Enloe, C. L. 1 Font, Gabriel I. 1 Lai, Shu T. 2 McHarg, M. G. 1 Putz, Victor 3; Affiliation: 1: Department of Physics, USAF Academy, United States Air Force Academy, CO 80840 USA 2: Air Force Research Laboratory, Hanscom AFB, MA 01731 USA 3: Oxford University, Oxford OX1 2JD, U.K.; Source Info: Dec2007 Part 1 of 2, Vol. 54 Issue 6, p1997; Subject Term: SPACE vehicles; Subject Term: ELECTRON emission; Subject Term: ELECTRIC discharges through gases; Subject Term: ORBITS; Subject Term: GEOSTATIONARY satellites; Subject Term: ARTIFICIAL satellites; Author-Supplied Keyword: Bootstrap charging; Author-Supplied Keyword: Defense Satellite Communication System (DSCS-III); Author-Supplied Keyword: differential charging; Author-Supplied Keyword: GEO satellite charging; Author-Supplied Keyword: spacecraft surface charging; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 7p; Illustrations: 4 Black and White Photographs, 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1109/TNS.2007.909911 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28153161&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hubbs, John E. AU - Marshal, Paul W. AU - Marshall, Cheryl J. AU - Gramer, Mark E. AU - Maestas, Diana AU - Garcia, John P. AU - Dole, Gary A. AU - Anderson, Amber A. T1 - Lateral Diffusion Length Changes in HgCdTe Detectors in a Proton Environment. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2007/12//Dec2007 Part 1 of 2 VL - 54 IS - 6 M3 - Article SP - 2435 EP - 2443 SN - 00189499 AB - This paper presents a study of the performance degradation in a proton environment of long wavelength infrared (LWIR) HgCdTe detectors. The energy dependence of the Non-Ionizing Energy Loss (NIEL) in HgCdTe provides a framework for estimating the responsivity degradation in LWIR HgCdTe detectors due to on-orbit exposure from protons. Banded detector arrays of different detector designs were irradiated at proton energies of 7, 12, and 63 MeV. These banded detector arrays allowed insight into how the fundamental detector parameters degraded in a proton environment at the three different proton energies. Measured data demonstrated that the detector responsivity degradation at 7 MeV is 5 times larger than the degradation at 63 MeV. Comparison of the responsivity degradation at the different proton energies suggests that the atomic Columbic interaction of the protons with the HgCdTe detector is likely the primary mechanism responsible for the degradation in responsivity at proton energies below 30 MeV. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTONS KW - IONIZING radiation KW - RADIATION KW - ENERGY dissipation KW - DETECTORS KW - RADIATION exposure KW - HgCdTe detectors KW - Non-Ionizing Energy Loss (NIEL) KW - proton radiation effects N1 - Accession Number: 28153223; Hubbs, John E. 1; Email Address: jhubbs@ieee.org Marshal, Paul W. 2; Email Address: pwmarshall@aol.com Marshall, Cheryl J. 3; Email Address: cmarshal2@aol.com Gramer, Mark E. 1 Maestas, Diana 1 Garcia, John P. 1 Dole, Gary A. 1 Anderson, Amber A. 4; Email Address: amber.anderson@kirtland.af.mil; Affiliation: 1: Ball Aerospace & Technologies Corp., Albuquerque, NM 87185 USA 2: Consultant, Brookneal, VA 24528 USA 3: NASA Goddard Space Flight Center, Greenbelt, MD 20771 USA 4: Space Vehicles Directorate of the Air Force Research Laboratory (AFRL/VSSS) Kirtland AFB, NM 87117 USA; Source Info: Dec2007 Part 1 of 2, Vol. 54 Issue 6, p2435; Subject Term: PROTONS; Subject Term: IONIZING radiation; Subject Term: RADIATION; Subject Term: ENERGY dissipation; Subject Term: DETECTORS; Subject Term: RADIATION exposure; Author-Supplied Keyword: HgCdTe detectors; Author-Supplied Keyword: Non-Ionizing Energy Loss (NIEL); Author-Supplied Keyword: proton radiation effects; Number of Pages: 9p; Illustrations: 1 Black and White Photograph, 1 Diagram, 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1109/TNS.2007.910329 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28153223&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morton, Yu T. AU - Miller, Mikel AU - Tsui, James AU - David Lin AU - Qihou Zhou T1 - GPS Civil Signal Self-Interference Mitigation During Weak Signal Acquisition. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing Y1 - 2007/12// VL - 55 IS - 12 M3 - Article SP - 5859 EP - 5863 SN - 1053587X AB - Current global positioning system receivers can acquire weak satellite signals with C/N0 = 15 dB/Hz if there is no self-interference from other strong satellite signals. This correspondence presents a computational efficient partitioned subspace projection method to mitigate the self-interference. The method is evaluated using simulated signals and a block-based weak signal acquisition algorithm. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HOUSEHOLD electronics KW - GLOBAL Positioning System KW - ARTIFICIAL satellites KW - ARTIFICIAL satellites in navigation KW - TELECOMMUNICATION KW - ELECTRONIC pulse techniques KW - DIGITAL electronics KW - WIRELESS communication systems KW - DIGITAL media KW - Global positioning system (GPS) receiver KW - partitioned sub-space projection KW - self-interference mitigation KW - weak signal acquisition N1 - Accession Number: 27885820; Morton, Yu T. 1; Email Address: mortonyt@muohio.edu Miller, Mikel 2; Email Address: zhouq@muohio.edu Tsui, James 3; Email Address: mikel.miller@eglin.af.mil David Lin 3; Email Address: James.Tsui@wpafb.af.mil Qihou Zhou 1; Email Address: david.lin@wpafb.af.mil; Affiliation: 1: Department of Electrical and Computer Engineering, Miami University, Oxford, OH 45056 USA 2: Air Force Research Laboratory, Eglin Air Force Base, FL 32542-68 10 USA 3: Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433 USA; Source Info: Dec2007, Vol. 55 Issue 12, p5859; Subject Term: HOUSEHOLD electronics; Subject Term: GLOBAL Positioning System; Subject Term: ARTIFICIAL satellites; Subject Term: ARTIFICIAL satellites in navigation; Subject Term: TELECOMMUNICATION; Subject Term: ELECTRONIC pulse techniques; Subject Term: DIGITAL electronics; Subject Term: WIRELESS communication systems; Subject Term: DIGITAL media; Author-Supplied Keyword: Global positioning system (GPS) receiver; Author-Supplied Keyword: partitioned sub-space projection; Author-Supplied Keyword: self-interference mitigation; Author-Supplied Keyword: weak signal acquisition; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 532210 Consumer Electronics and Appliances Rental; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 423620 Household Appliances, Electric Housewares, and Consumer Electronics Merchant Wholesalers; NAICS/Industry Codes: 443142 Electronics Stores; NAICS/Industry Codes: 517919 All Other Telecommunications; NAICS/Industry Codes: 517911 Telecommunications Resellers; NAICS/Industry Codes: 517910 Other telecommunications; NAICS/Industry Codes: 811213 Communication Equipment Repair and Maintenance; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TSP.2007.900761 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27885820&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - GOLDSTEIN, NEIL AU - VUJKOVIC-CVIJIN, PAJO AU - FOX, MARSHA AU - ADLER-GOLDEN, STEVEN AU - CLINE, JASON AU - GREGOR, BRIAN AU - LEE, JAMINE AU - SAMUELS, ALAN C. AU - HIGBEE, SHAWN D. AU - BECKER, LATIKA S. AU - OOI, TENG T1 - PROGRAMMABLE ADAPTIVE SPECTRAL IMAGERS FOR MISSION-SPECIFIC APPLICATION IN CHEMICAL/BIOLOGICAL SENSING. JO - International Journal of High Speed Electronics & Systems JF - International Journal of High Speed Electronics & Systems Y1 - 2007/12// VL - 17 IS - 4 M3 - Article SP - 749 EP - 760 PB - World Scientific Publishing Company SN - 01291564 AB - An innovative passive standoff system for the detection of chemical/biological agents is described. The spectral, temporal and spatial resolution of the data collected are all adjustable in real time, making it possible to keep the tradeoff between the sensor operating parameters at optimum at all times. The instrument contains no macro-scale moving parts and is therefore an excellent candidate for the development of a robust, compact, lightweight and low-power-consumption sensor. The design can also serve as a basis for a wide variety of spectral instruments operating in the visible, NIR, MWIR, and LWIR to be used for surveillance, process control, and biomedical applications. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of High Speed Electronics & Systems is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REMOTE sensing KW - DETECTORS KW - ELECTRONIC apparatus & appliances KW - ENGINEERING instruments KW - PHYSICS instruments KW - chemical/biological KW - remote sensing KW - spectral imaging N1 - Accession Number: 27265419; GOLDSTEIN, NEIL 1; Email Address: neil@spectral.com VUJKOVIC-CVIJIN, PAJO 1 FOX, MARSHA 1 ADLER-GOLDEN, STEVEN 1 CLINE, JASON 1 GREGOR, BRIAN 1 LEE, JAMINE 1 SAMUELS, ALAN C. 2 HIGBEE, SHAWN D. 3 BECKER, LATIKA S. 4 OOI, TENG 5,6; Affiliation: 1: Spectral Sciences, Inc., 4, 4th Avenue, Burlington, MA 01803, USA 2: Edgewood Chemical Biological Center, AMSRD-ECP-RT-DP(Building E3330/56), 5183 Blackhawk Road, Edgewood Area, Aberdeen Proving Ground, MD 21010-5424, USA 3: Air Force Research Laboratory, 29 Randolph Road, Hanscom AFB, MA 01730, USA 4: USA SMDC, P.O. Box 1500, Huntsville, AL 36907, USA 5: US Army Aviation and Missile Research, Development, and Engineering Center, Redstone Arsenal, AL 35898, USA 6: Department of Aeronautics and Astronautics, Stanford University, Stanford, CA 9430, USA; Source Info: Dec2007, Vol. 17 Issue 4, p749; Subject Term: REMOTE sensing; Subject Term: DETECTORS; Subject Term: ELECTRONIC apparatus & appliances; Subject Term: ENGINEERING instruments; Subject Term: PHYSICS instruments; Author-Supplied Keyword: chemical/biological; Author-Supplied Keyword: remote sensing; Author-Supplied Keyword: spectral imaging; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 12p; Illustrations: 3 Diagrams, 6 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27265419&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pickard-Gabriel, C. Jesse AU - Ledford, Cheryl L. AU - Gajewski, Donald A. AU - Granville, Robert R. AU - Andersen, Romney C. T1 - Traumatic Transfemoral Amputation with Concomitant Ipsilateral Proximal Femoral Fracture. JO - Journal of Bone & Joint Surgery, American Volume JF - Journal of Bone & Joint Surgery, American Volume Y1 - 2007/12// VL - 89 IS - 12 M3 - Article SP - 2764 EP - 2768 SN - 00219355 AB - The article presents a case report of traumatic transfemoral amputation with concomitant ipsilateral proximal femoral fracture in a 28-year-old male soldier. The medical history of the patient and the details of the surgical procedure are provided. The paper also provides relevant photographs and diagrams. KW - FEMUR -- Wounds & injuries KW - AMPUTATION KW - ORTHOPEDIC surgery KW - FRACTURES KW - BONE surgery N1 - Accession Number: 31710475; Pickard-Gabriel, C. Jesse 1; Email Address: S8CPickardGabriel@U5UHS.mil Ledford, Cheryl L. 2 Gajewski, Donald A. 2 Granville, Robert R. 2 Andersen, Romney C. 2; Affiliation: 1: Medical Service Corps, United States Air Force Reserve, 6608 14th Street N.W. #201, Washington, DC 20012 2: United States Army Medical Corps Orthopaedic Surgery Service, Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD 20889; Source Info: Dec2007, Vol. 89 Issue 12, p2764; Subject Term: FEMUR -- Wounds & injuries; Subject Term: AMPUTATION; Subject Term: ORTHOPEDIC surgery; Subject Term: FRACTURES; Subject Term: BONE surgery; Number of Pages: 5p; Illustrations: 2 Color Photographs; Document Type: Article L3 - 10.2106/JBJS.G.00229 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=31710475&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anandakathir, Robinson AU - Loon-Seng Tan AU - Chiang, Long Y. T1 - Starburst Encapsulation of C60 by Multiple Hindered Two-Photon Absorptive Diphenylaminodialkylfluorene Arms. JO - Journal of Macromolecular Science: Pure & Applied Chemistry JF - Journal of Macromolecular Science: Pure & Applied Chemistry Y1 - 2007/12// VL - 44 IS - 12 M3 - Article SP - 1265 EP - 1273 PB - Taylor & Francis Ltd SN - 10601325 AB - The efficiency of nonlinear optical responses is highly influenced by the state of molecular assembly and aggregation. Introduction of bulky alkyl groups on an organic chromophore enhances its molecular dispersion in solution and, thus, simultaneous multiphoton absorptivity. Accordingly, sterically hindered fullerenyl chromophore triads C60(>DPAF-C9)2 and pentads C60(>DPAF-C9)4 were designed and synthesized for the use as optical limiting materials. Photoinduced molecular polarization is a crucial parameter for the enhancement of nonlinear optical responses. For this purpose, we synthesized these conjugates by attaching one or several diphenylaminofluorene moieties to methano[60]fullerene via a covalent keto linkage. The motif increases electronic interactions of DPAF-Cn rings with the C60 cage in close vicinity. Synthesis of C60(>DPAF-C9)n (n=1, 2, or 4) was carried out by a four-step reaction procedure starting from 2-bromofluorene via dialkylation at C9 position of fluorine ring and followed by attachment of a diphenylamino group at C2 position of dialkylated fluorene, acylation of α-bromoacetyl group at C7 position of diphenylaminodialkylfluorene, and subsequent Bingel cyclopropanation of DPAF-acyl bromide with C60. All C60-DPAF-Cn derivatives were fully characterized by various spectroscopic analyses. Molecular compositions of these conjugates were clearly confirmed by MALDI-TOF mass spectra. A method of relative proton counting was applied on the samples of complex C60(>DPAF-C9)2 and C60(>DPAF-C9)4 derivatives using DABCO as an internal standard for the calibration of proton integration in 1H-NMR spectroscopic analyses. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Macromolecular Science: Pure & Applied Chemistry is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTONS KW - OPACITY (Optics) KW - SPECTRUM analysis KW - FLUORINE KW - DISPERSION KW - C chromophores KW - C60 chromophores KW - diphenylaminofluorene KW - multiadducts KW - nonlinear optical materials N1 - Accession Number: 27240815; Anandakathir, Robinson 1 Loon-Seng Tan 2 Chiang, Long Y. 1; Email Address: long_chiang@uml.edu; Affiliation: 1: Department of Chemistry, University of Massachusetts Lowell, Lowell, MA 2: Air Force Research Laboratory, AFRL/MLBP, Wright-Patterson Air Force Base, Dayton, OH; Source Info: Dec2007, Vol. 44 Issue 12, p1265; Subject Term: PHOTONS; Subject Term: OPACITY (Optics); Subject Term: SPECTRUM analysis; Subject Term: FLUORINE; Subject Term: DISPERSION; Author-Supplied Keyword: C chromophores; Author-Supplied Keyword: C60 chromophores; Author-Supplied Keyword: diphenylaminofluorene; Author-Supplied Keyword: multiadducts; Author-Supplied Keyword: nonlinear optical materials; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 9p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1080/10601320701606729 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27240815&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - SERAK, SVETLANA V. AU - TABIRYAN, NELSON V. AU - BUNNING, TIMOTHY J. T1 - NONLINEAR TRANSMISSION OF PHOTOSENSITIVE CHOLESTERIC LIQUID CRYSTALS DUE TO SPECTRAL BANDWIDTH AUTO-TUNING OR RESTORATION. JO - Journal of Nonlinear Optical Physics & Materials JF - Journal of Nonlinear Optical Physics & Materials Y1 - 2007/12// VL - 16 IS - 4 M3 - Article SP - 471 EP - 483 PB - World Scientific Publishing Company SN - 02188635 AB - Cholesteric liquid crystals (CLCs) which possess a periodicity in the visible portion of the spectra, exhibit selective reflection of circularly polarized light. The ability to modulate this color through a variety of means has been explored, including work which incorporated azobenzene LCs. Two types of systems have recently been explored utilizing wavelength-specific cis-trans isomerization processes, which enable unprecedented photosensitivity. The first system exhibits large blue or red-shifted changes in reflection wavelength upon visible irradiation. The second system exploits the metastable, long-lived photoinduced isotropic state, whose return to the reflective Grandjean texture can be induced by wavelength-specific radiation. We demonstrate nonlinear transmission from both types of systems, starting with submicrowatt power levels and spanning over four orders of magnitude dynamic range. The power dependence and temporal evolution of this effect (10–100 ms) is documented here for red or green laser wavelengths. The effect for the former case is due to bandgap auto-tuning, when the laser beam is tuning the CLC Bragg reflection band to its own wavelength. For the latter case, autonomous, optical feedback due to bandgap restoration is the cause of the nonlinear transmission properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nonlinear Optical Physics & Materials is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - SPECTRUM analysis KW - NONLINEAR boundary value problems KW - BANDWIDTHS KW - ISOMERIZATION KW - azobenzene KW - Cholesteric liquid crystals KW - lasers KW - nonlinear optics KW - tunable photonic bandgaps N1 - Accession Number: 28528393; SERAK, SVETLANA V. 1 TABIRYAN, NELSON V. 1; Email Address: nelson@beamco.com BUNNING, TIMOTHY J. 2; Email Address: nelson@beamco.com; Affiliation: 1: Beam Engineering for Advanced Measurements Co. 809 South Orlando Ave., Suite I, Winter Park, Florida 32789, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, 3005P Street, Suite 1, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: Dec2007, Vol. 16 Issue 4, p471; Subject Term: LIQUID crystals; Subject Term: SPECTRUM analysis; Subject Term: NONLINEAR boundary value problems; Subject Term: BANDWIDTHS; Subject Term: ISOMERIZATION; Author-Supplied Keyword: azobenzene; Author-Supplied Keyword: Cholesteric liquid crystals; Author-Supplied Keyword: lasers; Author-Supplied Keyword: nonlinear optics; Author-Supplied Keyword: tunable photonic bandgaps; Number of Pages: 13p; Illustrations: 1 Diagram, 8 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28528393&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, X. AU - Pan, E. AU - Roy, A.K. T1 - New phenomena concerning a screw dislocation interacting with two imperfect interfaces JO - Journal of the Mechanics & Physics of Solids JF - Journal of the Mechanics & Physics of Solids Y1 - 2007/12// VL - 55 IS - 12 M3 - Article SP - 2717 EP - 2734 SN - 00225096 AB - Abstract: Dislocation mobility and stability in nanocrystals and electronic materials are influenced by the material composition and interface conditions. Its mobility and stability then affect the mechanical behaviors of the composites. In this paper, we first address, in detail, the problem of a screw dislocation located in an annular coating layer which is imperfectly bonded to the inner circular inhomogeneity and to the outer unbounded matrix. Both the inhomogeneity–coating interface and coating–matrix interface are modeled by a linear spring with vanishing thickness to account for the possible damage occurring on the interface. An analytic solution in series form is derived by means of complex variable method, with all the unknown constants being determined explicitly. The solution is then applied to the study of the dislocation mobility and stability due to its interaction with the two imperfect interfaces. The most interesting finding is that when the middle coating layer is more compliant than both the inner inhomogeneity and the outer unbounded matrix and when the interface rigidity parameters for the two imperfect interfaces are greater than certain values, one stable and two unstable equilibrium positions can exist for the dislocation. Furthermore, under certain conditions an equilibrium position, which can be either stable or unstable (i.e., a saddle point), can exist, which has never been observed in previous studies. Results for a screw dislocation interacting with two parallel straight imperfect interfaces are also presented as the limiting case where the radius of the inner inhomogeneity approaches infinity while the thickness of the coating layer is fixed. [Copyright &y& Elsevier] AB - Copyright of Journal of the Mechanics & Physics of Solids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COATINGS industry KW - MATRICES KW - EQUILIBRIUM KW - NANOCRYSTALS KW - Dislocation mobility and stability KW - Equilibrium position KW - Image force KW - Imperfect interface KW - Screw dislocation N1 - Accession Number: 27533666; Wang, X. 1,2 Pan, E. 1,2; Email Address: pan2@uakron.edu Roy, A.K. 3; Affiliation: 1: Department of Civil Engineering, University of Akron, Akron, OH 44325-3905, USA 2: Department of Applied Mathematics, University of Akron, Akron, OH 44325-3905, USA 3: Air Force Research Laboratory, AFRL/MLBCM, Building 654, 2941 Hobson Way, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Dec2007, Vol. 55 Issue 12, p2717; Subject Term: COATINGS industry; Subject Term: MATRICES; Subject Term: EQUILIBRIUM; Subject Term: NANOCRYSTALS; Author-Supplied Keyword: Dislocation mobility and stability; Author-Supplied Keyword: Equilibrium position; Author-Supplied Keyword: Image force; Author-Supplied Keyword: Imperfect interface; Author-Supplied Keyword: Screw dislocation; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; Number of Pages: 18p; Document Type: Article L3 - 10.1016/j.jmps.2007.03.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27533666&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dolan, Matthew J AU - Kulkarni, Hemant AU - Camargo, Jose F AU - He, Weijing AU - Smith, Alison AU - Anaya, Juan-Manuel AU - Miura, Toshiyuki AU - Hecht, Frederick M AU - Mamtani, Manju AU - Pereyra, Florencia AU - Marconi, Vincent AU - Mangano, Andrea AU - Sen, Luisa AU - Bologna, Rosa AU - Clark, Robert A AU - Anderson, Stephanie A AU - Delmar, Judith AU - O'Connell, Robert J AU - Lloyd, Andrew AU - Martin, Jeffrey T1 - CCL3L1 and CCR5 influence cell-mediated immunity and affect HIV-AIDS pathogenesis via viral entry-independent mechanisms. JO - Nature Immunology JF - Nature Immunology Y1 - 2007/12// VL - 8 IS - 12 M3 - Article SP - 1324 EP - 1336 PB - Nature Publishing Group SN - 15292908 AB - Although host defense against human immunodeficiency virus 1 (HIV-1) relies mainly on cell-mediated immunity (CMI), the determinants of CMI in humans are poorly understood. Here we demonstrate that variations in the genes encoding the chemokine CCL3L1 and HIV coreceptor CCR5 influence CMI in both healthy and HIV-infected individuals. CCL3L1-CCR5 genotypes associated with altered CMI in healthy subjects were similar to those that influence the risk of HIV transmission, viral burden and disease progression. However, CCL3L1-CCR5 genotypes also modify HIV clinical course independently of their effects on viral load and CMI. These results identify CCL3L1 and CCR5 as major determinants of CMI and demonstrate that these host factors influence HIV pathogenesis through their effects on both CMI and other viral entry–independent mechanisms. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature Immunology is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 27546217; Dolan, Matthew J 1 Kulkarni, Hemant 2 Camargo, Jose F 3 He, Weijing 3 Smith, Alison 4 Anaya, Juan-Manuel 5 Miura, Toshiyuki 6 Hecht, Frederick M 7 Mamtani, Manju 3 Pereyra, Florencia 6 Marconi, Vincent 8 Mangano, Andrea 9 Sen, Luisa 9 Bologna, Rosa 10 Clark, Robert A 3 Anderson, Stephanie A 11 Delmar, Judith 8 O'Connell, Robert J 8 Lloyd, Andrew 12 Martin, Jeffrey 13; Affiliation: 1: [1] Infectious Disease Clinical Research Program, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas 78236, USA. [2] Infectious Diseases Service, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas 78236, USA. [3] Henry M. Jackson Foundation, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas 78236, USA. [4] These authors contributed equally to this work. 2: [1] Veterans Administration Research Center for AIDS and HIV-1 Infection, South Texas Veterans Health Care System, and Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229, USA. [2] These authors contributed equally to this work. 3: Veterans Administration Research Center for AIDS and HIV-1 Infection, South Texas Veterans Health Care System, and Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229, USA. 4: School of Psychology, University of Western Sydney, Penrith Sth, New South Wales 1797, Australia. 5: Cellular Biology and Immunogenetics Unit, Corporación para Investigaciones Biologicas–University of Rosario, Cra 72 78-B-141, Medellin, Colombia. 6: [1] Partners AIDS Research Center, Massachusetts General Hospital, Boston, Massachusetts 02114, USA. [2] Division of AIDS, Harvard Medical School, Boston, Massachusetts 02114, USA. [3] Howard Hughes Medical Institute, Chevy Chase, Maryland 20815, USA. 7: Department of Medicine, University of California, and San Francisco General Hospital, San Francisco, California 94110, USA. 8: [1] Infectious Disease Clinical Research Program, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas 78236, USA. [2] Infectious Diseases Service, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas 78236, USA. 9: Laboratorio de Biología Celular y Retrovirus, Hospital de Pediatría “J.P. Garrahan”, Buenos Aires 1245, Argentina. 10: Servicio de Infectología, Hospital de Pediatría “J.P. Garrahan”, Buenos Aires 1245, Argentina. 11: [1] Infectious Disease Clinical Research Program, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas 78236, USA. [2] Infectious Diseases Service, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas 78236, USA. [3] Henry M. Jackson Foundation, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base, Texas 78236, USA. 12: School of Medical Sciences, University of New South Wales, Sydney, New South Wales 2052, Australia. 13: Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California 94107, USA.; Source Info: Dec2007, Vol. 8 Issue 12, p1324; Number of Pages: 13p; Illustrations: 4 Charts, 6 Graphs; Document Type: Article L3 - 10.1038/ni1521 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27546217&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhdanov, B.V. AU - Kontur, F. AU - Phipps, S. AU - Hallada, F. AU - Elsbernd, P. AU - Miller, W. AU - Peay, A. AU - Knize, R.J. T1 - Tunable single frequency cesium laser JO - Optics Communications JF - Optics Communications Y1 - 2007/12// VL - 280 IS - 1 M3 - Article SP - 161 EP - 164 SN - 00304018 AB - Abstract: We present an optically pumped ring cavity Cs vapor laser with output power of 80mW operating in a single longitudinal mode at 894nm and tunable over 14GHz. This laser can be used for laser cooling, production of a spin polarized atoms, spectroscopy and quantum optics. [Copyright &y& Elsevier] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - NONLINEAR optics KW - LIGHT amplifiers KW - LIGHT sources KW - Alkali lasers KW - Optically pumped lasers N1 - Accession Number: 27052764; Zhdanov, B.V.; Email Address: boris.zhdanov.ctr@usafa.edu Kontur, F. 1 Phipps, S. 1 Hallada, F. 1 Elsbernd, P. 1 Miller, W. 1 Peay, A. 1 Knize, R.J. 1; Affiliation: 1: US Air Force Academy, Department of Physics, 2354 Fairchild Drive, Suite 2A31, USAF Academy, CO 80840, USA; Source Info: Dec2007, Vol. 280 Issue 1, p161; Subject Term: LASERS; Subject Term: NONLINEAR optics; Subject Term: LIGHT amplifiers; Subject Term: LIGHT sources; Author-Supplied Keyword: Alkali lasers; Author-Supplied Keyword: Optically pumped lasers; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.optcom.2007.08.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27052764&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stadler, Philipp AU - Oppelt, Kerstin AU - Singh, Thokchom Birendra AU - Grote, James G. AU - Schwödiauer, Reinhard AU - Bauer, Siegfried AU - Piglmayer-Brezina, Heidi AU - Bäuerle, Dieter AU - Sariciftci, Niyazi Serdar T1 - Organic field-effect transistors and memory elements using deoxyribonucleic acid (DNA) gate dielectric JO - Organic Electronics JF - Organic Electronics Y1 - 2007/12// VL - 8 IS - 6 M3 - Article SP - 648 EP - 654 SN - 15661199 AB - Abstract: Deoxyribonucleic acid (DNA) bio-polymers derived from fish waste products are employed as gate dielectric in n-type methanofullerene as well as p-type pentacene based organic field-effect transistors working at low voltage levels and low gate leakage currents. Based on the large hysteresis in the transfer characteristics, operation of the transistor as a non-volatile memory element is shown. Practically hysteresis free operation of DNA based transistors is obtained at low voltage levels by adding an additional aluminium oxide blocking layer between the organic semiconductor and the DNA gate dielectric. [Copyright &y& Elsevier] AB - Copyright of Organic Electronics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DNA KW - BIOPOLYMERS KW - FISHERIES -- By-products KW - DIELECTRICS KW - ALUMINUM oxide KW - 73.61.Ph KW - Deoxyribonucleic acid KW - Hysteresis KW - Organic dielectric KW - Organic transistors KW - Persistent polarization N1 - Accession Number: 27243132; Stadler, Philipp 1 Oppelt, Kerstin 1 Singh, Thokchom Birendra 1; Email Address: birendra.singh@jku.at Grote, James G. 2 Schwödiauer, Reinhard 3 Bauer, Siegfried 3 Piglmayer-Brezina, Heidi 4 Bäuerle, Dieter 4 Sariciftci, Niyazi Serdar 1; Affiliation: 1: Linz Institute of Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, A-4040 Linz, Austria 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLPS, Wright Patterson Air Force Base, OH 45433-7707, USA 3: Soft Matter Physics (SOMAP), Johannes Kepler University Linz, A-4040 Linz, Austria 4: Institut für Angewandte Physik, Johannes Kepler University Linz, A-4040 Linz, Austtria; Source Info: Dec2007, Vol. 8 Issue 6, p648; Subject Term: DNA; Subject Term: BIOPOLYMERS; Subject Term: FISHERIES -- By-products; Subject Term: DIELECTRICS; Subject Term: ALUMINUM oxide; Author-Supplied Keyword: 73.61.Ph; Author-Supplied Keyword: Deoxyribonucleic acid; Author-Supplied Keyword: Hysteresis; Author-Supplied Keyword: Organic dielectric; Author-Supplied Keyword: Organic transistors; Author-Supplied Keyword: Persistent polarization; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.orgel.2007.05.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27243132&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sochava, L. S. AU - Basun, S. A. AU - Bursian, V. É AU - Razdobarin, A. G. AU - Evans, D. R. T1 - Electric field effects in the EPR spectrum of low-spin Ni3+ centers in the KTaO3 crystal. JO - Physics of the Solid State JF - Physics of the Solid State Y1 - 2007/12// VL - 49 IS - 12 M3 - Article SP - 2262 EP - 2265 PB - Springer Science & Business Media B.V. SN - 10637834 AB - The electric field effects in the EPR spectra of low-spin ( S = 1/2) Ni3+ tetragonal centers in KTaO3 single crystals are investigated. It is revealed that the resonance lines are split and the centers are oriented as a result of the interaction of the external field with the electric dipole moment of the center. The dipole moment of the center is determined to be p = 100 D = 21 eÅ. An analysis of the set of experimental data obtained permits one to choose correctly the microscopic models for two nickel centers in KTaO3 crystals among the models discussed in the literature. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of the Solid State is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC fields KW - DIELECTRICS KW - PHYSICAL & theoretical chemistry KW - MAGNETIC dipoles KW - CRYSTALLOGRAPHY KW - SPECTRUM analysis KW - RESONANCE KW - 77.84.Dy N1 - Accession Number: 32853811; Sochava, L. S. 1; Email Address: Lev.Sochava@mail.ioffe.ru Basun, S. A. 1 Bursian, V. É 1 Razdobarin, A. G. 1 Evans, D. R. 2; Affiliation: 1: Ioffe Physicotechnical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26 St. Petersburg, 194021 Russia 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: Dec2007, Vol. 49 Issue 12, p2262; Subject Term: ELECTROMAGNETIC fields; Subject Term: DIELECTRICS; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: MAGNETIC dipoles; Subject Term: CRYSTALLOGRAPHY; Subject Term: SPECTRUM analysis; Subject Term: RESONANCE; Author-Supplied Keyword: 77.84.Dy; Number of Pages: 4p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1134/S1063783407120086 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32853811&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Weaver, D.S. AU - Semiatin, S.L. T1 - Recrystallization and grain-growth behavior of a nickel-base superalloy during multi-hit deformation JO - Scripta Materialia JF - Scripta Materialia Y1 - 2007/12// VL - 57 IS - 11 M3 - Article SP - 1044 EP - 1047 SN - 13596462 AB - The initial breakdown behavior of Waspaloy ingot material with a coarse, columnar-grain structure was established via isothermal hot compression of double-cone samples. Temperature (1177°C), strain rate (0.1s−1), dwell time between increments of deformation (30 or 60s), and forging direction relative to the columnar structure were typical of industrial practice. Recrystallization kinetics were more rapid during multi-hit than during monotonic testing. The recrystallization and grain-growth behavior showed a complex dependence on imposed strain, test orientation and dwell time. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RECRYSTALLIZATION (Metallurgy) KW - METALS -- Heat treatment KW - ANNEALING of metals KW - DEFORMATIONS (Mechanics) KW - Grain-growth KW - High-temperature deformation KW - Nickel KW - Particle-stimulated nucleation KW - Recrystallization N1 - Accession Number: 26577452; Weaver, D.S.; Email Address: donald.weaver@wpafb.af.mil Semiatin, S.L. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Dec2007, Vol. 57 Issue 11, p1044; Subject Term: RECRYSTALLIZATION (Metallurgy); Subject Term: METALS -- Heat treatment; Subject Term: ANNEALING of metals; Subject Term: DEFORMATIONS (Mechanics); Author-Supplied Keyword: Grain-growth; Author-Supplied Keyword: High-temperature deformation; Author-Supplied Keyword: Nickel; Author-Supplied Keyword: Particle-stimulated nucleation; Author-Supplied Keyword: Recrystallization; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2007.07.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26577452&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Look, D.C. T1 - Quantitative analysis of surface donors in ZnO JO - Surface Science JF - Surface Science Y1 - 2007/12// VL - 601 IS - 23 M3 - Article SP - 5315 EP - 5319 SN - 00396028 AB - Abstract: At low temperatures, typically up to 30K or even higher, the electrical properties of bulk ZnO samples are nearly always dominated by a conductive near-surface region. Here we show that a single, low-temperature Hall-effect measurement, say at 20K, and a reasonable assumption regarding the upper limit of the surface compensation ratio, yields a value of surface donor concentration N D,surf accurate to within about a factor two. Examples are given for bulk materials grown by the vapor-phase, melt, and hydrothermal processes. [Copyright &y& Elsevier] AB - Copyright of Surface Science is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide KW - ZINC compounds KW - LOW temperatures KW - BULK solids KW - Acceptors KW - Donors KW - Hall-effect KW - Surface conductivity KW - Temperature dependence KW - Zinc oxide N1 - Accession Number: 27741465; Look, D.C. 1,2; Email Address: david.look@wpafb.af.mil; Affiliation: 1: Semiconductor Research Center, Wright State University, Dayton, OH 45435, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, United States; Source Info: Dec2007, Vol. 601 Issue 23, p5315; Subject Term: ZINC oxide; Subject Term: ZINC compounds; Subject Term: LOW temperatures; Subject Term: BULK solids; Author-Supplied Keyword: Acceptors; Author-Supplied Keyword: Donors; Author-Supplied Keyword: Hall-effect; Author-Supplied Keyword: Surface conductivity; Author-Supplied Keyword: Temperature dependence; Author-Supplied Keyword: Zinc oxide; NAICS/Industry Codes: 484232 Dry bulk materials trucking, long distance; NAICS/Industry Codes: 484222 Dry bulk materials trucking, local; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.susc.2007.09.030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27741465&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Scott T. Iacono AU - Ashwani Vij AU - Wade Grabow AU - Dennis W. Smith Jr. AU - Joseph M. Mabry T1 - Facile synthesis of hydrophobic fluoroalkyl functionalized silsesquioxane nanostructures. JO - Chemical Communications JF - Chemical Communications Y1 - 2007/11/29/ VL - 2007 IS - 47 M3 - Article SP - 4992 EP - 4994 SN - 13597345 AB - New fluorinated polyhedral oligomeric silsesquioxane (F-POSS) structures possessing a high degree of hydrophobicity have been prepared via a facile corner-capping methodology. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemical Communications is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURES KW - NANOSTRUCTURED materials KW - NANOTECHNOLOGY KW - MICROSTRUCTURE N1 - Accession Number: 27794615; Scott T. Iacono 1 Ashwani Vij 2 Wade Grabow 2 Dennis W. Smith Jr. 1 Joseph M. Mabry 2; Affiliation: 1: Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET), Advanced Materials Research Laboratory, Clemson University Clemson USA 2: Air Force Research Laboratory, Propulsion Directorate10 East Saturn Boulevard Edwards Air Force Base USA joseph.mabry@edwards.af.mil; Source Info: Nov2007, Vol. 2007 Issue 47, p4992; Subject Term: NANOSTRUCTURES; Subject Term: NANOSTRUCTURED materials; Subject Term: NANOTECHNOLOGY; Subject Term: MICROSTRUCTURE; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27794615&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dale W. Schaefer AU - Ryan S. Justice T1 - How Nano Are Nanocomposites? JO - Macromolecules JF - Macromolecules Y1 - 2007/11/27/ VL - 40 IS - 24 M3 - Article SP - 8501 EP - 8517 SN - 00249297 AB - Composite materials loaded with nanometer-sized reinforcing fillers are widely believed to have the potential to push polymer mechanical properties to extreme values. Realization of anticipated properties, however, has proven elusive. The analysis presented here traces this shortfall to the large-scale morphology of the filler as determined by small-angle X-ray scattering, light scattering, and electron imaging. We examine elastomeric, thermoplastic, and thermoset composites loaded with a variety of nanoscale reinforcing fillers such as precipitated silica, carbon nanotubes (single and multiwalled), and layered silicates. The conclusion is that large-scale disorder is ubiquitous in nanocomposites regardless of the level of dispersion, leading to substantial reduction of mechanical properties (modulus) compared to predictions based on idealized filler morphology. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - X-ray scattering KW - COMPOSITE materials KW - LIGHT -- Scattering N1 - Accession Number: 27677078; Dale W. Schaefer 1 Ryan S. Justice 1; Affiliation: 1: Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati,Ohio 45221-0012, and Materials and Manufacturing Directorate, Air Force Research Laboratory,WPAFB, Ohio 45433-7750; Source Info: Nov2007, Vol. 40 Issue 24, p8501; Subject Term: POLYMERS; Subject Term: X-ray scattering; Subject Term: COMPOSITE materials; Subject Term: LIGHT -- Scattering; Number of Pages: 17p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27677078&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shackelford, S.A. AU - Menapace, J.A. AU - Goldman, J.F. T1 - Liquid state thermochemical decomposition of neat 1,3,5,5-tetranitrohexahydropyrimidine (DNNC) and its DNNC-d 2, DNNC-d 4, DNNC-d 6 structural isotopomers: Mechanistic entrance into the DNNC molecule JO - Thermochimica Acta JF - Thermochimica Acta Y1 - 2007/11/25/ VL - 464 IS - 1/2 M3 - Article SP - 42 EP - 58 SN - 00406031 AB - Abstract: Global kinetics for the liquid state thermochemical decomposition of neat 1,3,5,5-tetranitrohexahydropyrimidine (DNNC), perdeuterio-labeled DNNC-d 6, and partially deuterium-labeled DNNC-d 2 and DNNC-d 4 isotopomers were obtained by isothermal differential scanning calorimetry (IDSC). Molecular kinetic deuterium isotope effect (KDIE) values obtained with DNNC and DNNC-d 6 from 174 to 194°C revealed that Cpture regulates both an endothermic catalytic initiation and the exothermic propagation of the liquid thermochemical decomposition process. Using IDSC-based KDIE comparisons with the DNNC-d 2, DNNC-d 4, and DNNC-d 6 isotopomers, a more detailed chemical structure/mechanistic relationship emerged by entering the interior of the DNNC molecule. Here structural kinetic KDIE results showed the rate-controlling Cpture has its origin at the non-equivalent C-2 methylene group sandwiched between the two nitrated DNNC nitrogen ring atoms, versus at the chemically equivalent C-4 and C-6 methylene ring positions located elsewhere in the DNNC molecule. Elucidation of such mechanistic features should aid in the structural design of new high-energy compounds with improved thermochemical properties. A 170.0kJ/mol activation energy appeared for the endothermic induction period, and a lower 104.2kJ/mol activation energy was determined for the exothermic acceleratory portion of the DNNC decomposition process. The global liquid and solid state thermochemical decomposition processes for DNNC are compared. [Copyright &y& Elsevier] AB - Copyright of Thermochimica Acta is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEUTERIUM KW - TEMPERATURE measurements KW - STRUCTURAL design KW - PHYSICAL & theoretical chemistry KW - 1 KW - 1,3,5,5-Tetranitrohexahydropyrimidine KW - 3 KW - 5 KW - 5-Tetranitrohexahydropyrimidine KW - Deuterium isotope effect KW - DNNC KW - KDIE KW - Liquid state decomposition N1 - Accession Number: 27050104; Shackelford, S.A. 1,2; Email Address: scott.shackelford@edwards.af.mil Menapace, J.A. 2 Goldman, J.F. 3; Affiliation: 1: Air Force Research Laboratory, Propellants Branch (AFRL/PRSP), 10 East Saturn Blvd., Edwards AFB, CA 93524-7680, USA 2: Directorate of Chemical Sciences, FJSRL, USAF Academy CO, USA 3: Department of Chemistry, USAF Academy, CO, USA; Source Info: Nov2007, Vol. 464 Issue 1/2, p42; Subject Term: DEUTERIUM; Subject Term: TEMPERATURE measurements; Subject Term: STRUCTURAL design; Subject Term: PHYSICAL & theoretical chemistry; Author-Supplied Keyword: 1; Author-Supplied Keyword: 1,3,5,5-Tetranitrohexahydropyrimidine; Author-Supplied Keyword: 3; Author-Supplied Keyword: 5; Author-Supplied Keyword: 5-Tetranitrohexahydropyrimidine; Author-Supplied Keyword: Deuterium isotope effect; Author-Supplied Keyword: DNNC; Author-Supplied Keyword: KDIE; Author-Supplied Keyword: Liquid state decomposition; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.tca.2007.08.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27050104&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Taner E. Dirama AU - Joel A. Johnson T1 - Conformation and Dynamics of Arylthiol Self-Assembled Monolayers on Au(111). JO - Langmuir JF - Langmuir Y1 - 2007/11/20/ VL - 23 IS - 24 M3 - Article SP - 12208 EP - 12216 SN - 07437463 AB - We report a computational investigation of the conformation and the dynamics of self-assembled monolayers (SAMs) of a set of aromatic thiols arranged in the (√3 × √3)-R30° packing ratio on a Au(111) surface using molecular dynamics (MD) simulations. It was found that the molecular conformations were better defined for the arylthiol with two phenyl groups as compared to those with a single phenyl group and that the chemical structure of the head and tail groups had a considerable influence on the system geometry. In line with the density functional theory (DFT) calculations of small thiol molecules, we found for the SAMs that the face-centered cubic (fcc) site on the Au(111) surface was the most preferred, followed by the hexagonal close-packed (hcp) site, while the bridge position showed the characteristics of a local energy maximum. The dynamics of thiol head groups on these three Au sites was found to govern the overall dynamics of SAMs as measured by the mean square displacement. We also report that both the conformation and the dynamics on the studied time scale were driven by the SAM formation energy. [ABSTRACT FROM AUTHOR] AB - Copyright of Langmuir is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONOMOLECULAR films KW - THIOLS KW - MOLECULAR dynamics KW - COMPUTER simulation N1 - Accession Number: 27682898; Taner E. Dirama 1 Joel A. Johnson 1; Affiliation: 1: Universal Technology Corporation, 1270 North Fairfield Road, Dayton, Ohio 45432-2600, andCoatings Research Group, Nonstructural Materials Branch, Nonmetallic Materials Division,Materials and Manufacturing Directorate, Air Force Research Laboratory,Wright-Patterson Air Force Base, Ohio 45433-7750; Source Info: Nov2007, Vol. 23 Issue 24, p12208; Subject Term: MONOMOLECULAR films; Subject Term: THIOLS; Subject Term: MOLECULAR dynamics; Subject Term: COMPUTER simulation; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27682898&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grabinski, Christin AU - Hussain, Saber AU - Lafdi, Khalid AU - Braydich-Stolle, Laura AU - Schlager, John T1 - Effect of particle dimension on biocompatibility of carbon nanomaterials JO - Carbon JF - Carbon Y1 - 2007/11/15/ VL - 45 IS - 14 M3 - Article SP - 2828 EP - 2835 SN - 00086223 AB - Abstract: With various emerging applications ranging from medicine to materials and electronics, the risk of exposure to nanomaterials is rapidly increasing. Several routes of exposure to nanomaterials exist; the most important being dermal contact and inhalation. In this dermal toxicity study, the cellular effects of carbon-based materials with diameters ranging from micro- to nano-dimension were investigated using mouse keratinocytes (HEL-30). The carbon materials tested included carbon fibers (CF; 10μm diameter), carbon nanofibers (CNF; 100nm diameter), multi-walled carbon nanotubes (MWCNT; 10nm diameter), and single-walled carbon nanotubes (SWCNT; 1nm diameter). CF and CNF did not significantly affect cell viability; however, MWCNT and SWCNT reduced cell viability in a time-dependent manner up to 48h, with full recovery of mitochondrial function by the 72h time point. After a 24h exposure, cells exposed to MWCNT produced up to 3-fold higher increase in reactive oxygen species than those exposed to SWCNT. The results of this study suggest that high-aspect ratio carbon material toxicity is dependent on dimension and composition. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON KW - NANOTUBES KW - CARBON fibers KW - MITOCHONDRIA KW - ACTIVE oxygen KW - NANOSTRUCTURED materials N1 - Accession Number: 27456164; Grabinski, Christin 1,2 Hussain, Saber 2; Email Address: saber.hussain@wpafb.af.mil Lafdi, Khalid 1 Braydich-Stolle, Laura 2 Schlager, John 2; Affiliation: 1: University of Dayton, 300 College Park, Dayton, OH 45469-0168, USA 2: Air Force Research Laboratory, AFRL/HEPB, 2729 R Street, Wright Patterson AFB, OH 45433, USA; Source Info: Nov2007, Vol. 45 Issue 14, p2828; Subject Term: CARBON; Subject Term: NANOTUBES; Subject Term: CARBON fibers; Subject Term: MITOCHONDRIA; Subject Term: ACTIVE oxygen; Subject Term: NANOSTRUCTURED materials; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.carbon.2007.08.039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27456164&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Conrad, A.R. AU - Dumas, C. AU - Merline, W.J. AU - Drummond, J.D. AU - Campbell, R.D. AU - Goodrich, R.W. AU - Le Mignant, D. AU - Chaffee, F.H. AU - Fusco, T. AU - Kwok, S.H. AU - Knight, R.I. T1 - Direct measurement of the size, shape, and pole of 511 Davida with Keck AO in a single night JO - ICARUS JF - ICARUS Y1 - 2007/11/15/ VL - 191 IS - 2 M3 - Article SP - 616 EP - 627 SN - 00191035 AB - Abstract: Using the high-quality data set of 165 images taken at 11 epochs over the 5.13 h rotation of the large C-type Asteroid 511 Davida, we find the dimensions of its triaxial ellipsoid model to be . The images were acquired with the adaptive optics system on the 10 m Keck II telescope on December 27, 2002. The a and b diameters are much better determined than previously estimated from speckle interferometry and indirect measurements, and our mean diameter, , is 19% below previous estimates. We find the pole to lie within 2° of [; ] or in Ecliptic coordinates [; ], a significant improvement to the pole direction. Otherwise, previous determinations of the axial ratios agree with our new results. These observations illustrate that our technique of finding the dimensions and pole of an asteroid from its changing projected size and shape is very powerful because it can be done in essentially one night as opposed to decades of lightcurves. Average departures of 3% (5 km) of the asteroid''s mean radius from a smooth outline are detected, with at least two local positive-relief features and at least one flat facet showing approximately 15 km deviations from the reference best-fit ellipsoid. The facet is reminiscent of large global-scale craters on Asteroid 253 Mathilde (also a C-type) when seen edge-on in close-up images from the NEAR mission flyby. We show that giant craters (up to 150 km diameter, the size of the largest facets seen on Davida) can be expected from the impactor size distribution, without likelihood of catastrophic disruption of Davida. [Copyright &y& Elsevier] AB - Copyright of ICARUS is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADAPTIVE optics KW - OPTICAL measurements KW - LIGHT -- Scattering KW - SOLAR system KW - Adaptive optics KW - rotation ( Asteroids ) N1 - Accession Number: 27228071; Conrad, A.R. 1; Email Address: aconrad@keck.hawaii.edu Dumas, C. 2 Merline, W.J. 3 Drummond, J.D. 4 Campbell, R.D. 1 Goodrich, R.W. 1 Le Mignant, D. 1 Chaffee, F.H. 1 Fusco, T. 5 Kwok, S.H. 1 Knight, R.I. 6; Affiliation: 1: W.M. Keck Observatory, 65-1120 Mamalahoa Highway, Kamuela, HI 96743, USA 2: ESO Very Large Telescope (VLT), European Southern Observatory, Alonso de Cordova 3107, Vitacura Casilla 19001, Santiago 19, Chile 3: Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302, USA 4: Starfire Optical Range, Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117-5776, USA 5: Office National d'Etudes et de Recherches Aerospatiales (ONERA), DOTA-E, BP 72, F-92322 Chatillon, France 6: University of Hawaii, 200 W. Kawili St., Hilo, HI 96720-4091, USA; Source Info: Nov2007, Vol. 191 Issue 2, p616; Subject Term: ADAPTIVE optics; Subject Term: OPTICAL measurements; Subject Term: LIGHT -- Scattering; Subject Term: SOLAR system; Author-Supplied Keyword: Adaptive optics; Author-Supplied Keyword: rotation ( Asteroids ); Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.icarus.2007.05.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27228071&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bai, Zongwu AU - Price, Gary E. AU - Yoonessi, Mitra AU - Juhl, Shane B. AU - Durstock, Michael F. AU - Dang, Thuy D. T1 - Proton exchange membranes based on sulfonated polyarylenethioethersulfone and sulfonated polybenzimidazole for fuel cell applications JO - Journal of Membrane Science JF - Journal of Membrane Science Y1 - 2007/11/15/ VL - 305 IS - 1/2 M3 - Article SP - 69 EP - 76 SN - 03767388 AB - Abstract: Novel polymer composite membranes composed of sulfonated polyarylenethioether sulfone (SPTES) and sulfonated polybenzimidazole (SPBI) were prepared by solution casting with the composition of SPTES in the varied range from 30 to 70wt%. The proton conductivity of the composite membranes was measured by four probe impedance spectroscopy at different temperatures. The highest proton conductivity (up to 100mS/cm) was found for the SPTES/SPBI (70/30) polymer composite membrane at 85°C, 85% relative humidity, and proton conductivity increased when the SPTES content increased. X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), and Atomic Force Microscopy (AFM) were used to confirm the presence of SPBI in the composite membranes as well as the dispersion of SPBI. The results indicated that membranes showed a good perspective as proton exchange membrane (PEM) for fuel cell applications. [Copyright &y& Elsevier] AB - Copyright of Journal of Membrane Science is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTONS KW - FUEL cells KW - ATOMIC force microscopy KW - DIRECT energy conversion KW - Polymer composite KW - Proton conductivity KW - Proton exchange membrane (PEM) KW - Sulfonated polyarylenethioether sulfone (SPTES) KW - Sulfonated polybenzimidazole (SPBI) N1 - Accession Number: 26995158; Bai, Zongwu 1; Email Address: zongwu.bai@wpafb.af.mil Price, Gary E. 1 Yoonessi, Mitra 2 Juhl, Shane B. 2 Durstock, Michael F. 2 Dang, Thuy D. 2; Email Address: thuy.dang@wpafb.af.mil; Affiliation: 1: University of Dayton Research Institute, University of Dayton, Dayton, OH 45469, United States 2: Air Force Research Laboratory/MLBP, Wright-Patterson Air Force Base, OH 45433, United States; Source Info: Nov2007, Vol. 305 Issue 1/2, p69; Subject Term: PROTONS; Subject Term: FUEL cells; Subject Term: ATOMIC force microscopy; Subject Term: DIRECT energy conversion; Author-Supplied Keyword: Polymer composite; Author-Supplied Keyword: Proton conductivity; Author-Supplied Keyword: Proton exchange membrane (PEM); Author-Supplied Keyword: Sulfonated polyarylenethioether sulfone (SPTES); Author-Supplied Keyword: Sulfonated polybenzimidazole (SPBI); Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.memsci.2007.07.034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26995158&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Khalfan, Amish N. AU - Sanchez, Luz M. AU - Kodiweera, Chandana AU - Greenbaum, Steve G. AU - Bai, Zongwu AU - Dang, Thuy D. T1 - Water and proton transport properties of hexafluorinated sulfonated poly(arylenethioethersulfone) copolymers for applications to proton exchange membrane fuel cells JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2007/11/15/ VL - 173 IS - 2 M3 - Article SP - 853 EP - 859 SN - 03787753 AB - Abstract: In the present study, we examine the water and proton transport properties of hexafluorinated sulfonated poly(arylenethioethersulfone) (6F-SPTES) copolymer membranes for applications to proton exchange membrane fuel cells (PEMFCs). The 6F-SPTES copolymer membranes build upon the structures of previously studied sulfonated poly(arylenethioethersulfone) (SPTES) copolymer membranes to include CF3 functional groups in efforts to strengthen water retention and extend membrane performance at elevated temperatures (above 120°C). The 6F-SPTES copolymer membranes sustain higher water self-diffusion and greater proton conductivities than the commercial Nafion® membrane. Water diffusion studies of the 6F-SPTES copolymer membranes using the pulsed-field gradient spin-echo NMR technique reveal, however, the fluorinated membranes to be somewhat unfavorable over their non-fluorinated counterparts as high temperature membranes. In addition, proton conductivity measurements of the fluorinated membranes up to 85°C show comparable results with the non-fluorinated SPTES membranes. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - MAGNETIC resonance KW - DIRECT energy conversion KW - FUEL cells KW - Nuclear magnetic resonance KW - Proton conductivity KW - Proton exchange membrane KW - Pulsed-field gradient KW - Water retention KW - Water transport N1 - Accession Number: 27050999; Khalfan, Amish N. 1 Sanchez, Luz M. 1 Kodiweera, Chandana 1 Greenbaum, Steve G. 1; Email Address: steve.greenbaum@hunter.cuny.edu Bai, Zongwu 2 Dang, Thuy D. 3; Affiliation: 1: Hunter College of the City University of New York, Physics Department, 695 Park Avenue, New York, NY 10021, USA 2: University of Dayton Research Institute, University of Dayton, 300 College Park Drive, Dayton, OH 45469, USA 3: Air Force Research Laboratory/MLBP, Material and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Nov2007, Vol. 173 Issue 2, p853; Subject Term: POLYMERS; Subject Term: MAGNETIC resonance; Subject Term: DIRECT energy conversion; Subject Term: FUEL cells; Author-Supplied Keyword: Nuclear magnetic resonance; Author-Supplied Keyword: Proton conductivity; Author-Supplied Keyword: Proton exchange membrane; Author-Supplied Keyword: Pulsed-field gradient; Author-Supplied Keyword: Water retention; Author-Supplied Keyword: Water transport; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jpowsour.2007.08.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27050999&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Shaw, Leon L. AU - Larsen, James M. AU - Liaw, Peter K. AU - Mughrabi, Hael AU - Endo, Masahiro AU - Kostorz, Gernot T1 - Preface JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2007/11/15/ VL - 468-470 M3 - Editorial SP - 1 EP - 1 SN - 09215093 N1 - Accession Number: 26431934; Shaw, Leon L. 1; Email Address: leon.shaw@uconn.edu Larsen, James M. 2 Liaw, Peter K. 3 Mughrabi, Hael 4 Endo, Masahiro 5 Kostorz, Gernot 6; Affiliation: 1: University of Connecticut, United States 2: Air Force Research Laboratory, United States 3: University of Tennessee, United States 4: Universität Erlangen-Nürnberg, Germany 5: Fukuoka University, Japan 6: ETH Zürich, Switzerland; Source Info: Nov2007, Vol. 468-470, p1; Number of Pages: 1p; Document Type: Editorial L3 - 10.1016/j.msea.2007.02.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26431934&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Golden, Patrick J. AU - Shepard, Michael J. T1 - Life prediction of fretting fatigue with advanced surface treatments JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2007/11/15/ VL - 468-470 M3 - Article SP - 15 EP - 22 SN - 09215093 AB - Abstract: Laboratory fretting results with diamond like carbon coating, low plasticity burnishing, and laser shock processing as well as with no surface treatments are presented. A method of life prediction for a dovetail type specimen is demonstrated with the laboratory results. In general, the life prediction calculations agree with the laboratory results when the appropriate coefficient of friction and compressive residual stresses are accounted for in the analysis. The assumptions made in the analysis are qualitatively confirmed with experimental observations. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RHEOLOGY KW - METALS -- Finishing KW - RESIDUAL stresses KW - STRAINS & stresses (Mechanics) KW - DLC KW - Fretting KW - Laser shock processing KW - Life prediction KW - Low plasticity burnishing KW - Ti–6Al–4V N1 - Accession Number: 26431937; Golden, Patrick J.; Email Address: patrick.golden@wpafb.af.mil Shepard, Michael J. 1; Affiliation: 1: Air Force Research Laboratory, AFRL/MLLMN, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Nov2007, Vol. 468-470, p15; Subject Term: RHEOLOGY; Subject Term: METALS -- Finishing; Subject Term: RESIDUAL stresses; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: DLC; Author-Supplied Keyword: Fretting; Author-Supplied Keyword: Laser shock processing; Author-Supplied Keyword: Life prediction; Author-Supplied Keyword: Low plasticity burnishing; Author-Supplied Keyword: Ti–6Al–4V; NAICS/Industry Codes: 332813 Electroplating, Plating, Polishing, Anodizing, and Coloring; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.msea.2006.10.168 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26431937&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jha, S.K. AU - Caton, M.J. AU - Larsen, J.M. T1 - A new paradigm of fatigue variability behavior and implications for life prediction JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2007/11/15/ VL - 468-470 M3 - Article SP - 23 EP - 32 SN - 09215093 AB - Abstract: The treatment of the fatigue variability behavior has traditionally been based on the understanding of the mean-lifetime behavior. With reference to two turbine engine materials, an α+β titanium alloy and a nickel-based superalloy, it is shown that the traditional approach may not accurately describe the fatigue variability behavior of these materials. Decreases in stress level, or microstructural change directed at increasing the mean lifetime, were found to affect mean and worst-case (life-limiting) fatigue behavior differently, and these differences could not be accounted for in the traditional understanding. In particular, the life-limiting mechanism was controlled by crack growth although the mean-lifetime response was increasingly dominated by crack initiation with decreasing stress level. A new paradigm of fatigue variability was therefore suggested, in which the total uncertainty in lifetime breaks down into the variability in (1) the worst-case mechanism and that in (2) the classical, mean-lifetime governing response. The effects of microstructure and temperature on the fatigue variability behavior were studied with respect to the new paradigm and found to have a very systematic effect on the worst-case and the mean behavior, depending on the degree of influence of these variables on the crack initiation and the growth regime. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE KW - TITANIUM alloys KW - MICROMECHANICS KW - STEREOLOGY KW - α+β titanium alloy KW - Fatigue variability KW - Life-limiting behavior KW - Microstructure KW - Nickel-base superalloy KW - Probability of failure N1 - Accession Number: 26431938; Jha, S.K. 1; Email Address: Sushantjha@hotmail.com Caton, M.J. 2 Larsen, J.M. 2; Affiliation: 1: Universal Technology Corporation, Dayton, OH 45432, USA 2: US Air Force Research Laboratory, Wright-Patterson AFB, OH 45431, USA; Source Info: Nov2007, Vol. 468-470, p23; Subject Term: FATIGUE; Subject Term: TITANIUM alloys; Subject Term: MICROMECHANICS; Subject Term: STEREOLOGY; Author-Supplied Keyword: α+β titanium alloy; Author-Supplied Keyword: Fatigue variability; Author-Supplied Keyword: Life-limiting behavior; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Nickel-base superalloy; Author-Supplied Keyword: Probability of failure; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.msea.2006.10.171 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26431938&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Millwater, Harry AU - Larsen, James AU - John, Reji T1 - Effects of residual stresses on probabilistic lifing of engine disk materials JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2007/11/15/ VL - 468-470 M3 - Article SP - 129 EP - 136 SN - 09215093 AB - Abstract: Residual stresses are known to be beneficial with respect to fatigue life of metal components. Shot peening or other techniques are frequently used to improve fatigue performance. This study uses a probabilistic methodology to examine the significance of the residual stress, obtained from shot peening, on the crack growth fatigue life. Specifically, the residual stress at a bolthole in a compressor disk composed of a superalloy is modeled as a random variable in addition to the initial crack size, crack propagation scatter and stress scatter random variables. The probabilistic sensitivities of the predicted probability-of-fracture with respect to the parameters of the random variables are computed and comprise a metric for assessing the significance of the residual stress on reducing the probability-of-fracture. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESIDUAL stresses KW - STRAINS & stresses (Mechanics) KW - PROBABILITY theory KW - MATHEMATICAL statistics KW - Compressor disk KW - Probabilistic residual stress KW - Probabilistic sensitivities KW - Shot peening N1 - Accession Number: 26431953; Millwater, Harry 1; Email Address: harry.millwater@utsa.edu Larsen, James 2 John, Reji 2; Affiliation: 1: Department of Mechanical Engineering, University of Texas at San Antonio, San Antonio, TX, United States 2: Materials & Manufacturing Directorate (AFRL/MLLM), Air Force Research Laboratory, Wright Patterson AFB, OH, United States; Source Info: Nov2007, Vol. 468-470, p129; Subject Term: RESIDUAL stresses; Subject Term: STRAINS & stresses (Mechanics); Subject Term: PROBABILITY theory; Subject Term: MATHEMATICAL statistics; Author-Supplied Keyword: Compressor disk; Author-Supplied Keyword: Probabilistic residual stress; Author-Supplied Keyword: Probabilistic sensitivities; Author-Supplied Keyword: Shot peening; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.msea.2006.10.169 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26431953&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiang, X.P. AU - Man, C.-S. AU - Shepard, M.J. AU - Zhai, T. T1 - Effects of shot-peening and re-shot-peening on four-point bend fatigue behavior of Ti–6Al–4V JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2007/11/15/ VL - 468-470 M3 - Article SP - 137 EP - 143 SN - 09215093 AB - Abstract: The application of shot-peening to improve performance and reduce scatter in the high cycle fatigue regime is common in aerospace production practice. Frequently, aerospace components are re-shot-peened during refit to “restore” compressive stresses that may have redistributed in service. Since shot-peening is an impact process that can cause various surface artifacts, it is not clear what effect this re-shot-peening process has on fatigue properties. In the current study, the effects of shot-peening and re-shot-peening on the profile of surface residual stress and the four-point bend fatigue behavior of Ti–6Al–4V(wt.%) alloy were investigated at room temperature and 150°C. A step-test method was used to determine the fatigue strength of the shot-peened and re-shot-peened specimens in different conditions. Shot-peening improved the fatigue strength of the alloy from about 65% σ y to 71% σ y (σ y is the yield strength of this alloy at room temperature). The fatigue limits of the shot-peened Ti–6Al–4V alloy at room temperature and 150°C were found to be almost identical. Residual stresses did not seem to redistribute significantly under the fatigue loading at room temperature and 150°C. Both shot-peening and re-shot-peening significantly enhanced the fatigue strength over that of the un-shot-peened alloy. No negative effects of re-shot-peening were observed. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHOT peening KW - RESIDUAL stresses KW - STRAINS & stresses (Mechanics) KW - STRENGTH of materials KW - Four-point bend fatigue KW - Re-shot-peening KW - Shot-peening KW - Ti–6Al–4V alloy N1 - Accession Number: 26431954; Jiang, X.P. 1 Man, C.-S. 2 Shepard, M.J. 3 Zhai, T. 1; Email Address: tzhai@engr.uky.edu; Affiliation: 1: Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, USA 2: Department of Mathematics, University of Kentucky, Lexington, KY 40506, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH 45433-7817, USA; Source Info: Nov2007, Vol. 468-470, p137; Subject Term: SHOT peening; Subject Term: RESIDUAL stresses; Subject Term: STRAINS & stresses (Mechanics); Subject Term: STRENGTH of materials; Author-Supplied Keyword: Four-point bend fatigue; Author-Supplied Keyword: Re-shot-peening; Author-Supplied Keyword: Shot-peening; Author-Supplied Keyword: Ti–6Al–4V alloy; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.msea.2007.01.156 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26431954&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Klingenberg, Melissa L. AU - Naguy, Debora A. AU - Naguy, Thomas A. AU - Straw, Randall J. AU - Joseph, Christopher AU - Mongelli, Gerard A. AU - Nelson, Georgette C. AU - Denny, Shanna L. AU - Arthur, James J. T1 - Transitioning laser technology to support air force depot transformation needs JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2007/11/15/ VL - 202 IS - 1 M3 - Article SP - 45 EP - 57 SN - 02578972 AB - Abstract: The U.S. Air Force and the Environmental Security Technology Certification Program (ESTCP) funded a multi-year collaborative project to test the ability of portable hand-held laser coating removal systems (PLCRS) to remove organic coatings from metallic and non-metallic substrates in an effort to reduce the use of hazardous chemicals and/or solid waste generated from more conventional removal methods. A 250 W carbon dioxide, 40 W neodymium: yttrium, aluminum, garnet (Nd:YAG), and 120 W Nd:YAG laser systems were evaluated for removing a variety of primer and topcoat combinations on 2024 T-3 and 7075 T-6 (bare and aluminum clad with chromate conversion coatings or chromic acid anodize), 4130 steel, honeycomb materials, Kevlar, graphite epoxy, and fiberglass epoxy substrates. Engineering tests were conducted to assess coating removal rate, physical substrate damage, modification of substrate properties, and impact on subsequent paint adhesion. The results of engineering tests were compared to baseline data (i.e., virgin material) and test data available in the literature for conventional coating removal techniques. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COATING processes KW - ALUMINUM KW - LASERS -- Industrial applications KW - SURFACES (Technology) KW - Carbon dioxide KW - Coating removal rate KW - Laser KW - Laser decoating KW - Mechanical properties KW - Nd:YAG KW - Portable hand-held laser coating removal system N1 - Accession Number: 27049498; Klingenberg, Melissa L. 1; Email Address: klingenb@ctc.com Naguy, Debora A. 2 Naguy, Thomas A. 3 Straw, Randall J. 3 Joseph, Christopher 4 Mongelli, Gerard A. 5 Nelson, Georgette C. 6 Denny, Shanna L. 6 Arthur, James J. 6; Affiliation: 1: Concurrent Technologies Corporation, 100 CTC Drive, Johnstown PA 15904, USA 2: Air Force Materiel Command A4N, 4375 Chidlaw Road, C104, Wright-Patterson AFB, OH 45433, USA 3: Air Force Research Laboratory, MLSC, 2179 12th Street, Room 122, Wright-Patterson AFB, OH 45433-7718, USA 4: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA 5: Concurrent Technologies Corporation, 3070 Presidential Drive, Suite 100, Fairborn, OH 45324, USA 6: Concurrent Technologies Corporation, Pittsburgh, PA, 425 6th Avenue, Regional Enterprise Tower, Suite 2850, Pittsburgh, PA 15219, USA; Source Info: Nov2007, Vol. 202 Issue 1, p45; Subject Term: COATING processes; Subject Term: ALUMINUM; Subject Term: LASERS -- Industrial applications; Subject Term: SURFACES (Technology); Author-Supplied Keyword: Carbon dioxide; Author-Supplied Keyword: Coating removal rate; Author-Supplied Keyword: Laser; Author-Supplied Keyword: Laser decoating; Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Nd:YAG; Author-Supplied Keyword: Portable hand-held laser coating removal system; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.surfcoat.2007.04.056 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27049498&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Demidov, V. I. AU - DeJoseph, C. A. AU - Simonov, V. Ya. T1 - Gas-discharge plasma sources for nonlocal plasma technology. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/11/12/ VL - 91 IS - 20 M3 - Article SP - 201503 PB - American Institute of Physics SN - 00036951 AB - Nonlocal plasma technology is based on the effect of self-trapping of fast electrons in the plasma volume [V. I. Demidov, C. A. DeJoseph, Jr., and A. A. Kudryavtsev, Phys. Rev. Lett. 95, 215002 (2006)]. This effect can be achieved by changing the ratio of fast electron flux to ion flux incident on the plasma boundaries. This in turn leads to a significant change in plasma properties and therefore can be useful for technological applications. A gas-discharge device which demonstrates control of the plasma properties by this method is described. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLES (Nuclear physics) KW - PLASMA (Ionized gases) -- Research KW - ELECTRON temperature KW - PLASMA products KW - PLASMA dynamics N1 - Accession Number: 28153845; Demidov, V. I. 1 DeJoseph, C. A. 2 Simonov, V. Ya. 3; Affiliation: 1: UES, Inc., Dayton-Xenia Rd., Beavercreek, Ohio 45432, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 3: St. Petersburg Mining Technical University, St. Petersburg 199026, Russia; Source Info: 11/12/2007, Vol. 91 Issue 20, p201503; Subject Term: PARTICLES (Nuclear physics); Subject Term: PLASMA (Ionized gases) -- Research; Subject Term: ELECTRON temperature; Subject Term: PLASMA products; Subject Term: PLASMA dynamics; Number of Pages: 3p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.2815930 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28153845&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Farr, Everett G. AU - Bowen, Leland H. AU - Baum, Carl E. AU - Feather, William D. T1 - The Folded Horn Antenna. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2007/11/02/Nov2007 Part 2 of 2 VL - 55 IS - 11 M3 - Article SP - 3341 EP - 3344 SN - 0018926X AB - Antennas for radiating high-power mosoband (medium-band-width) electromagnetic signals are critical to the mission of upsetting electronics at a distance. When operated at frequencies of a few hundred megahertz, RF weapons require highly efficient antennas that can fit into a small volume. Most of the existing antennas, such as pyramidal horns, are too large to fit onto certain platforms of interest. To address this challenge, we investigate the folded horn, which has aperture dimensions of 0.5 × 2 wavelengths, and a depth of 1.5-2 wavelengths. This antenna has a nearly focused aperture field, doe to a parabolic fold In the H-plane. We report here on the fabrication and testing of the first folded horn, operating at 3 GHz. After a number of iterations, we obtained a realized gain of at least 10 dBi over 3-5 GHz, an aperture efficiency of 80%,and a return loss below -10 dB over 2.8-3,35 GHz, This design could be adapted to high voltages, nod It could work well In a 2-antenna array, with two antennas positioned back-to-back, driven by a differential source. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNAS (Electronics) KW - ELECTRONIC apparatus & appliances KW - ELECTROMAGNETIC devices KW - SIGNALS & signaling KW - BANDWIDTHS KW - BROADBAND communication systems KW - DATA transmission systems KW - WAVELENGTHS KW - HIGH voltages KW - Antenna gain KW - antenna radiation patterns KW - horn antennas KW - weapons N1 - Accession Number: 27658016; Farr, Everett G. 1; Email Address: efarr@farr.research.com Bowen, Leland H. 1 Baum, Carl E. 2 Feather, William D. 3; Affiliation: 1: Farr Research, Inc., Albuquerque, NM 87123 USA 2: University of New Mexico, Albuquerque, NM 87131 USA 3: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, NM 87117 USA; Source Info: Nov2007 Part 2 of 2, Vol. 55 Issue 11, p3341; Subject Term: ANTENNAS (Electronics); Subject Term: ELECTRONIC apparatus & appliances; Subject Term: ELECTROMAGNETIC devices; Subject Term: SIGNALS & signaling; Subject Term: BANDWIDTHS; Subject Term: BROADBAND communication systems; Subject Term: DATA transmission systems; Subject Term: WAVELENGTHS; Subject Term: HIGH voltages; Author-Supplied Keyword: Antenna gain; Author-Supplied Keyword: antenna radiation patterns; Author-Supplied Keyword: horn antennas; Author-Supplied Keyword: weapons; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; Number of Pages: 4p; Illustrations: 10 Graphs; Document Type: Article L3 - 10.1109/TAP.2007.908854 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27658016&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morgan, Philip E. AU - Rizzetta, Donald P. AU - Visbal, Miguel R. T1 - Large-Eddy Simulation of Separation Control for Flow over a Wall-Mounted Hump. JO - AIAA Journal JF - AIAA Journal Y1 - 2007/11// VL - 45 IS - 11 M3 - Article SP - 2643 EP - 2643 SN - 00011452 AB - This work describes an implicit large-eddy simulation for active control of flow over a wall-mounted hump. Results are presented for the baseline simulation without flow control and for both steady-suction and oscillatory blowing-and-suction flow control. Results are compared with Reynolds-averaged Navier-Stokes solutions and experimental data from NASA's 2004 Computational Fluid Dynamics Validation on Synthetic Jets and Turbulent Separation Control Workshop. The baseline and steady-suction cases achieved significantly better agreement with experimental flowfield characteristics than the Reynolds-averaged Navier-Stokes simulations in the separated region downstream of the hump. Because the large-eddy simulation was accomplished at one-fifth of the experimental Reynolds number, the oscillatory flow control displayed less effectiveness than the experiment. Using a larger oscillatory amplitude exerts more control on the separation bubble. Comparing the baseline flow solution with cases using flow control clearly demonstrates the ability to reduce the size of the separated flow region in the wake of the hump. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDIES KW - FLUID dynamics KW - SIMULATION methods & models KW - NAVIER-Stokes equations KW - REYNOLDS number KW - JETS (Fluid dynamics) N1 - Accession Number: 27555857; Morgan, Philip E. 1,2 Rizzetta, Donald P. 1,2 Visbal, Miguel R. 1,2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512 2: Associate Fellow, AIAA; Source Info: Nov2007, Vol. 45 Issue 11, p2643; Subject Term: EDDIES; Subject Term: FLUID dynamics; Subject Term: SIMULATION methods & models; Subject Term: NAVIER-Stokes equations; Subject Term: REYNOLDS number; Subject Term: JETS (Fluid dynamics); Number of Pages: 1p; Document Type: Article L3 - 10.2514/1.22660 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27555857&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Birman, Victor AU - Byrd, Larry W. T1 - Vibrations of Damaged Cantilevered Beams Manufactured from Functionally Graded Materials. JO - AIAA Journal JF - AIAA Journal Y1 - 2007/11// VL - 45 IS - 11 M3 - Article SP - 2747 EP - 2747 SN - 00011452 AB - This paper is concerned with the effect of damage on free and forced vibrations of a functionally graded cantilever beam. The modes of damage considered in the paper include a region with degraded stiffness adjacent to the root of the beam, a single delamination crack, and a single crack at the root cross section of the beam propagating in the thickness direction. Closed-form solutions are suggested for all cases considered, including both forced and free vibrations; in the case of free vibrations, these solutions are exact. The peculiarities of the frequency analysis of nonprismatic and/or axially graded beams with the root crack in the presence of static thermal loads are also discussed and it is shown that neglecting axial inertia may lead to a qualitative error (this conclusion remains valid in prismatic functionally graded material beams). Numerical examples concentrate on the effect of a single root crack on the fundamental frequency, because such damage was observed in numerous loading scenarios. It is shown that the presence of a crack that has propagated through about one-third of the thickness of the beam significantly affects the fundamental frequency. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VIBRATION (Mechanics) KW - CANTILEVERS KW - MATERIALS -- Fatigue KW - NUMERICAL analysis KW - PULSE frequency modulation KW - GIRDERS N1 - Accession Number: 27555874; Birman, Victor 1,2 Byrd, Larry W. 3; Affiliation: 1: University of Missouri-Rolla, St. Louis, Missouri 63121 2: Associate Fellow, AIAA 3: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Nov2007, Vol. 45 Issue 11, p2747; Subject Term: VIBRATION (Mechanics); Subject Term: CANTILEVERS; Subject Term: MATERIALS -- Fatigue; Subject Term: NUMERICAL analysis; Subject Term: PULSE frequency modulation; Subject Term: GIRDERS; Number of Pages: 1p; Document Type: Article L3 - 10.2514/1.30076 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27555874&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Terrence R. Meyer AU - Sukesh Roy AU - James R. Gord T1 - Improving Signal-to-Interference Ratio in Rich Hydrocarbon–Air Flames Using Picosecond Coherent Anti-Stokes Raman Scattering. JO - Applied Spectroscopy JF - Applied Spectroscopy Y1 - 2007/11// VL - 61 IS - 11 M3 - Article SP - 1135 EP - 1140 SN - 00037028 AB - There is growing interest in the use of short-pulse lasers for coherent antiStokes Raman scattering (CARS) to minimize non-resonant background (NRB) contributions in a variety of applications. Using time-coincident picosecond (ps) pump and Stokes beams and a time-delayed ps probe beam, we show that a three orders of magnitude reduction in NRB interference can be achieved in rich hydrocarbon–air flames while preserving 60% to 80% of the CARS signal. This represents a significant improvement in signal-to-interference ratio compared with previous measurements in room temperature air and is attributable to reduced rates of collisional dephasing and relaxation at flame temperatures. Measurements within the flame zone of a laminar flat-flame burner are used to investigate the characteristics of time-coincident and probedelayed broadband ps N2-CARS spectra for C2H4–air equivalence ratios of 0.5 to 1.2. Up to three ro-vibrational bands of N2 are excited with each laser shot using 135 ps pump and 106 ps Stokes beams, and the CARS signal is generated using a 135 ps probe beam delayed by 165 ps. The enhanced signal-to-interference ratio achieved in the current work is one to two orders of magnitude higher than that previously achieved using polarization-selection techniques without sensitivity to the effects of birefringence caused by density gradients or test cell windows. Moreover, the use of a 135 ps laser source in this study enables frequency domain "broadband" CARS with sufficient resolution to extract ro-vibrational spectral features under various flame conditions. The effect of probe delay and NRB suppression on characteristics of these broadband CARS spectra are investigated, and evidence of preferential collisional dephasing and relaxation of different ro-vibrational transitions is not detected. This is a promising but preliminary result to be investigated further in future work. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Spectroscopy is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN effect KW - PICOSECOND pulses KW - FLAME KW - TEMPERATURE N1 - Accession Number: 27683509; Terrence R. Meyer 1 Sukesh Roy 2 James R. Gord 3; Affiliation: 1: Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011 2: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, Ohio 45440 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, Ohio 45433; Source Info: Nov2007, Vol. 61 Issue 11, p1135; Subject Term: RAMAN effect; Subject Term: PICOSECOND pulses; Subject Term: FLAME; Subject Term: TEMPERATURE; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27683509&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Perlovsky, Leonid I. AU - Deming, Ross W. T1 - Neural Networks for Improved Tracking. JO - IEEE Transactions on Neural Networks JF - IEEE Transactions on Neural Networks Y1 - 2007/11// VL - 18 IS - 6 M3 - Article SP - 1854 EP - 1857 SN - 10459227 AB - In this letter, we have developed a neural network (NN) based upon modeling fields for improved object tracking. Models for ground moving target indicator (GMTI) tracks have been developed as well as neural architecture incorporating these models. The neural tracker overcomes combinatorial complexity of tracking in highly cluttered scenarios and results in about 20-dB (two orders of magnitude) improvement in signal-to-clutter ratio. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Neural Networks is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TECHNOLOGICAL complexity KW - RADAR KW - ARTIFICIAL satellite tracking KW - NEURAL networks (Computer science) KW - ARTIFICIAL intelligence KW - COMPUTER architecture KW - Combinatorial complexity KW - ground moving target indicator (GMTI) radar KW - multitarget tracking KW - neural networks (NNs) N1 - Accession Number: 27892031; Perlovsky, Leonid I. 1,2; Email Address: Leonid.Perlovsky@hanscom.af.mil Deming, Ross W. 3; Email Address: ross.deming@hanscom.af.mil; Affiliation: 1: Harvard University, Cambridge, MA 02138 USA 2: Air Force Research Laboratory, Sensors Directorate (AFRL/SNHE), Hanscom AFB, MA 01731 USA 3: General Dynamics IT, Inc., Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA 01731 USA; Source Info: Nov2007, Vol. 18 Issue 6, p1854; Subject Term: TECHNOLOGICAL complexity; Subject Term: RADAR; Subject Term: ARTIFICIAL satellite tracking; Subject Term: NEURAL networks (Computer science); Subject Term: ARTIFICIAL intelligence; Subject Term: COMPUTER architecture; Author-Supplied Keyword: Combinatorial complexity; Author-Supplied Keyword: ground moving target indicator (GMTI) radar; Author-Supplied Keyword: multitarget tracking; Author-Supplied Keyword: neural networks (NNs); NAICS/Industry Codes: 517919 All Other Telecommunications; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 517910 Other telecommunications; Number of Pages: 4p; Illustrations: 2 Diagrams; Document Type: Article L3 - 10.1109/TNN.2007.903143 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27892031&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, X. AU - Pan, E. AU - Roy, A.K. T1 - Three-dimensional Green’s functions for a steady point heat source in a functionally graded half-space and some related problems JO - International Journal of Engineering Science JF - International Journal of Engineering Science Y1 - 2007/11// VL - 45 IS - 11 M3 - Article SP - 939 EP - 950 SN - 00207225 AB - Abstract: Three-dimensional Green’s functions are derived for a steady point heat source in a functionally graded half-space where the thermal conductivity varies exponentially along an arbitrary direction. We first introduce an auxiliary function which satisfies an inhomogeneous Helmholtz equation. Then by virtue of the image method which was first proposed by Sommerfeld for the homogeneous half-space Green’s function of a steady point heat source, we arrive at an explicit expression for this function. Finally with this auxiliary function, we derive the three-dimensional Green’s functions due to a steady point heat source in a functionally graded half-space. Also investigated in this paper are the temperature field induced by a point heat source moving at a constant speed in a functionally graded full-space; the electric potential due to a static point electric charge in a dielectric full-space with electric field gradient effects; and the two-dimensional time-harmonic dynamic Green’s function for homogeneous and functionally graded materials with strain gradient effects. [Copyright &y& Elsevier] AB - Copyright of International Journal of Engineering Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC fields KW - THERMAL conductivity KW - ELECTROMAGNETIC fields KW - HELMHOLTZ equation KW - Electric field gradient effects KW - Functionally graded material KW - Green’s function KW - Half-space KW - Heat conduction KW - Helmholtz equation KW - Strain gradient effect N1 - Accession Number: 26841861; Wang, X. 1,2 Pan, E. 1,2; Email Address: pan2@uakron.edu Roy, A.K. 3; Affiliation: 1: Department of Civil Engineering, University of Akron, Akron, OH 44325-3905, United States 2: Department of Applied Mathematics, University of Akron, Akron, OH 44325-3905, United States 3: Air Force Research Laboratory, AFRL/MLBCM, Bldg 654, 2941 Hobson Way, Wright-Patterson AFB, OH 45433-7750, United States; Source Info: Nov2007, Vol. 45 Issue 11, p939; Subject Term: ELECTRIC fields; Subject Term: THERMAL conductivity; Subject Term: ELECTROMAGNETIC fields; Subject Term: HELMHOLTZ equation; Author-Supplied Keyword: Electric field gradient effects; Author-Supplied Keyword: Functionally graded material; Author-Supplied Keyword: Green’s function; Author-Supplied Keyword: Half-space; Author-Supplied Keyword: Heat conduction; Author-Supplied Keyword: Helmholtz equation; Author-Supplied Keyword: Strain gradient effect; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.ijengsci.2007.07.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26841861&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Thomas M. AU - Friedman, Jeffrey F. AU - Viggiano, A.A. T1 - A new technique for studying ion–ion recombination in a flowing afterglow Langmuir probe apparatus: Ar+ recombining with Cl2−, CCl2O−, Br2−, SF5− and SF6− JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2007/11// VL - 267 IS - 1-3 M3 - Article SP - 190 EP - 198 SN - 13873806 AB - Abstract: We present a new technique for measuring ion–ion recombination rate constants in a flowing afterglow Langmuir probe (FALP) apparatus. The technique involves measuring the fractional negative ion product distribution following electron attachment versus the initial electron density when two or more products are formed. The concentration of reactant gas is kept low enough that the plasma retains its electron-Ar+, ambipolar diffusion character along the entire length of the flow tube. If only polyatomic anions are formed, accurate relative rates are obtained. When one of the species is atomic, absolute rates are also possible by doing a detailed model of the plasma kinetics. Here we present rate constants for Ar+ recombining with Cl2− ((5.3±1.6)×10−8 cm3 s−1 at 302K), Br2− ((3.9±1.2)×10−8 cm3 s−1 at 302K), the phosgene negative ion CCl2O− ((8.9±2.7)×10−8 cm3 s−1 at 302K), and relative rate constants for Ar+ +SF6− and SF5− (ratio 1.2 at 550K, with an uncertainty of +0.3 and −0.1). The diatomic negative ions are found to recombine slower than the polyatomic ones, in agreement with earlier indications. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEUTRALIZATION (Chemistry) KW - ANIONS KW - MATTER -- Properties KW - SOLUTION (Chemistry) KW - Ar+ KW - Br2 − KW - CCl2O− KW - Cl2 − KW - FALP KW - Flowing afterglow Langmuir probe KW - Ion–ion mutual neutralization KW - Ion–ion recombination KW - SF5 − KW - SF6 − N1 - Accession Number: 26844364; Miller, Thomas M. 1 Friedman, Jeffrey F. 2 Viggiano, A.A. 1; Email Address: albert.viggiano@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Bedford, Massachusetts 01731-3010, USA 2: Department of Physics, University of Puerto Rico, Mayaguez, Puerto Rico 00681-9016, USA; Source Info: Nov2007, Vol. 267 Issue 1-3, p190; Subject Term: NEUTRALIZATION (Chemistry); Subject Term: ANIONS; Subject Term: MATTER -- Properties; Subject Term: SOLUTION (Chemistry); Author-Supplied Keyword: Ar+; Author-Supplied Keyword: Br2 −; Author-Supplied Keyword: CCl2O−; Author-Supplied Keyword: Cl2 −; Author-Supplied Keyword: FALP; Author-Supplied Keyword: Flowing afterglow Langmuir probe; Author-Supplied Keyword: Ion–ion mutual neutralization; Author-Supplied Keyword: Ion–ion recombination; Author-Supplied Keyword: SF5 −; Author-Supplied Keyword: SF6 −; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijms.2007.02.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26844364&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Allred, Clark L. AU - Borenstein, Jeffrey T. AU - Hobbs, Linn W. T1 - Neutron irradiation-induced dimensional changes in MEMS glass substrates JO - Nuclear Instruments & Methods in Physics Research Section B JF - Nuclear Instruments & Methods in Physics Research Section B Y1 - 2007/11// VL - 264 IS - 1 M3 - Article SP - 66 EP - 72 SN - 0168583X AB - Abstract: A study is made of radiation-induced expansion/compaction in Pyrex® (Corning 7740) and Hoya SD-2® glasses, which are used as substrates for MEMS devices. Glass samples were irradiated with a neutron fluence composed primarily of thermal neutrons, and a flotation technique was employed to measure the resulting density changes in the glass. Transport of Ions in Matter (TRIM) calculations were performed to relate fast (∼1MeV) neutron atomic displacement damage to that of boron thermal neutron capture events, and measured density changes in the glass samples were thus proportionally attributed to thermal and fast neutron fluences. Pyrex was shown to compact at a rate of (in Δρ/ρ per n/cm2) 8.14×10−20 (thermal) and 1.79×10−20 (fast). The corresponding results for Hoya SD-2 were 2.21×10−21 and 1.71×10−21, respectively. On a displacement per atom (dpa) basis, the compaction of the Pyrex was an order of magnitude greater than that of the Hoya SD-2. Our results are the first reported measurement of irridiation-induced densification in Hoya SD-2. The compaction of Pyrex agreed with a previous study. Hoya SD-2 is of considerable importance to MEMS, owing to its close thermal expansivity match to silicon from 25 to 500°C. [Copyright &y& Elsevier] AB - Copyright of Nuclear Instruments & Methods in Physics Research Section B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IRRADIATION KW - PARTICLES (Nuclear physics) KW - NUCLEAR reactions KW - NUCLEAR reactors KW - Glass KW - MEMS KW - Radiation damage N1 - Accession Number: 27241232; Allred, Clark L. 1; Email Address: allredcs@comcast.net Borenstein, Jeffrey T. 2 Hobbs, Linn W. 3; Affiliation: 1: Department of Physics, United States Air Force Academy, 2354 Fairchild Drive, CO 80840, United States 2: The Charles Stark Draper Laboratory, Inc., 555 Technology Square, Cambridge, MA 02139-3563, United States 3: Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139-4307, United States; Source Info: Nov2007, Vol. 264 Issue 1, p66; Subject Term: IRRADIATION; Subject Term: PARTICLES (Nuclear physics); Subject Term: NUCLEAR reactions; Subject Term: NUCLEAR reactors; Author-Supplied Keyword: Glass; Author-Supplied Keyword: MEMS; Author-Supplied Keyword: Radiation damage; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; NAICS/Industry Codes: 332410 Power Boiler and Heat Exchanger Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.nimb.2007.07.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27241232&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Choi, Y. S. AU - Dimiduk, D. M. AU - Uchic, M. D. AU - Parthasarathy, T. A. T1 - Modelling plasticity of Ni3Al-based L12 intermetallic single crystals. II. Two-step (T1 and T2) deformation behaviour. JO - Philosophical Magazine JF - Philosophical Magazine Y1 - 2007/11//11/1/2007 VL - 87 IS - 30 M3 - Article SP - 4759 EP - 4775 SN - 14786435 AB - The two-step (T1 and T2) deformation behaviour of Ni3Al-based single crystals was modelled under the framework of a new constitutive model proposed by Y.S. Choi, D.M. Dimiduk, M.D. Uchic, et al. [Phil. Mag. 87 1939 (2007)]. A new set of formulations and criteria, which identify thermally reversible and irreversible components of the constitutive variables and define the relative significance of those components, was developed and implemented within the new constitutive framework. The simulation results well captured the general qualitative trends of the flow behaviour upon re-straining at T2 after pre-straining at T1 for both T1 > T2 and T1 < T2. Modelling results suggested that the dislocation substructures generated at T1 need to be treated as partially or fully transferable to plastic flow at T2, at least through the early stage of re-straining, to capture all major pre-strain effects. In particular, the large strengthening effect at T2 for even a few percent of pre-strain at T1 was obtainable only by controlling the availability of mobile dislocations and sources at T2. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Magazine is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEFORMATIONS (Mechanics) KW - RHEOLOGY KW - ABNORMALITIES in animals KW - WOUNDS & injuries KW - HUMAN abnormalities N1 - Accession Number: 33401911; Choi, Y. S. 1; Email Address: yoon-suk.choi@wpafb.af.mil Dimiduk, D. M. 2 Uchic, M. D. 2 Parthasarathy, T. A. 1; Affiliation: 1: UES, Inc, Dayton, OH 45432-1894, USA 2: Air Force Research Laboratory, OH 45433-7817, USA; Source Info: 11/1/2007, Vol. 87 Issue 30, p4759; Subject Term: DEFORMATIONS (Mechanics); Subject Term: RHEOLOGY; Subject Term: ABNORMALITIES in animals; Subject Term: WOUNDS & injuries; Subject Term: HUMAN abnormalities; Number of Pages: 17p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1080/14786430701589368 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33401911&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, S. I. AU - Dimiduk, D. M. AU - Tang, M. AU - Parthasarathy, T. A. AU - Uchic, M. D. AU - Woodward, C. T1 - Estimating the strength of single-ended dislocation sources in micron-sized single crystals. JO - Philosophical Magazine JF - Philosophical Magazine Y1 - 2007/11//11/1/2007 VL - 87 IS - 30 M3 - Article SP - 4777 EP - 4794 SN - 14786435 AB - Three-dimensional (3D) discrete dislocation dynamics simulations were used to calculate the effects of anisotropy of dislocation line tension (increasing Poisson's ratio, ν) on the strength of single-ended dislocation sources in micron-sized volumes with free surfaces and to compare them with the strength of double-ended sources of equal length. Their plastic response was directly modelled within a 1 µm3 volume composed of a single crystal fcc metal. In general, double-ended sources are stronger than single-ended sources of an equal length and exhibit no significant effects from truncating the long-range elastic fields at this scale. The double-ended source strength increases with ν, exhibiting an increase of about 50% at ν = 0.38 (value for Ni) as compared to the value at ν = 0. Independent of dislocation line direction, for ν greater than 0.20, the strengths of single-ended sources depend upon the sense of the stress applied. The value for α in the expression for strength, τ = α(L)µb/L is shown to vary from 0.4 to 0.84 depending on the character of the dislocation and the direction of operation of the source at ν = 0.38 and L = 933b. By varying the lengths of the sources from 933 to 233b, it was shown that the scaling of the strength of single-ended and double-ended sources with their length both follow a ln(L/b)/(L/b) dependence. Surface image stresses are shown to have little effect on the critical stress of single-ended sources at a length of ∼250b or greater. This suggests that for 3D discrete dislocation dynamics simulations of the plastic deformation of micron-sized crystals in the size range 0.5-20 µm, image stresses making the surface traction-free can be neglected. The relationship between these findings and a recent statistical model for the hardening of small volumes is discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Magazine is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALLOGRAPHY KW - STATICS KW - MATTER -- Properties KW - SURFACES (Geometry) KW - RADIOACTIVE source strength N1 - Accession Number: 33401910; Rao, S. I. 1; Email Address: Satish.Rao@wpafb.af.mil Dimiduk, D. M. 2 Tang, M. 3 Parthasarathy, T. A. 1 Uchic, M. D. 2 Woodward, C. 4; Affiliation: 1: UES, Inc., Dayton, OH 45432-1894, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM Wright-Patterson AFB, USA 3: Lawrence Livermore National Laboratory, L-45 Livermore, CA 94551, USA 4: Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208-3108, USA; Source Info: 11/1/2007, Vol. 87 Issue 30, p4777; Subject Term: CRYSTALLOGRAPHY; Subject Term: STATICS; Subject Term: MATTER -- Properties; Subject Term: SURFACES (Geometry); Subject Term: RADIOACTIVE source strength; Number of Pages: 18p; Illustrations: 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1080/14786430701591513 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=33401910&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Putthanarat, S. AU - Tandon, G.P. AU - Schoeppner, G.A. T1 - Influence of polishing time on thermo-oxidation characterization of isothermally aged PMR-15 resin JO - Polymer Degradation & Stability JF - Polymer Degradation & Stability Y1 - 2007/11// VL - 92 IS - 11 M3 - Article SP - 2110 EP - 2120 SN - 01413910 AB - Abstract: The effect of polishing time on measured oxidation thickness and elastic modulus of isothermally aged PMR-15 neat resin was investigated. A specimen aged 956h in ambient air at 288°C (550°F) was selected for this study. Thermo-oxidation of the specimen results in a surface oxidation layer with different stiffness and polishing characteristics than the interior of the specimen. The specimen was repolished at consecutive time periods from a quick polishing time to extensive polishing time. A white light interferometer was used as a surface profiler to measure height variations from the specimen edges into the interior of the material. Subsequently, optical microscopy and nanoindentation experiments were conducted to correlate observations of oxidation thickness and elastic modulus measurements with polishing time. The modulus profiles obtained from nanoindentation experiments indicate formation of an outer brittle layer followed by a sharp drop in the transition region to the unoxidized interior. The oxidized material is polished at a greater rate than the unoxidized material. The maximum variation in the surface profile from polishing was limited to 5μm across the oxidation layer (∼150μm), which results in a slope of ∼2° over the oxidized region. Optical measurements of thickness of oxidized layer and transition region are in good agreement with the height and modulus profiles obtained using the interferometer and nanoindenter, respectively. Results from three techniques show that the measured oxidation thickness and elastic modulus are relatively independent of the polishing time. [Copyright &y& Elsevier] AB - Copyright of Polymer Degradation & Stability is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GUMS & resins KW - OXIDATION KW - THERMAL properties KW - MICROSCOPY KW - STRAINS & stresses (Mechanics) KW - Modulus KW - Nanoindentation KW - Optical microscopy KW - Surface profile N1 - Accession Number: 27354700; Putthanarat, S. 1 Tandon, G.P. 1; Email Address: g.tandon@wpafb.af.mil Schoeppner, G.A. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469-0168, United States 2: Air Force Research Laboratory/MLBC, WPAFB, OH, United States; Source Info: Nov2007, Vol. 92 Issue 11, p2110; Subject Term: GUMS & resins; Subject Term: OXIDATION; Subject Term: THERMAL properties; Subject Term: MICROSCOPY; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: Modulus; Author-Supplied Keyword: Nanoindentation; Author-Supplied Keyword: Optical microscopy; Author-Supplied Keyword: Surface profile; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.polymdegradstab.2007.07.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27354700&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Choi, Y.S. AU - Uchic, M.D. AU - Parthasarathy, T.A. AU - Dimiduk, D.M. T1 - Numerical study on microcompression tests of anisotropic single crystals JO - Scripta Materialia JF - Scripta Materialia Y1 - 2007/11// VL - 57 IS - 9 M3 - Article SP - 849 EP - 852 SN - 13596462 AB - Using a crystallographic elastic–viscoplastic finite element method, the present study investigated two primary factors influencing the measured properties from microcompression tests for anisotropic single crystals: the effect of the sample geometry on the measured elastic response, and the effect of misalignment between the compression platen and the sample on the measured elastic and plastic response. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALS KW - NUMERICAL analysis KW - FINITE element method KW - CRYSTALLOGRAPHY KW - Elastic behavior KW - Finite element analysis KW - Microcompression KW - Simulation KW - Slip N1 - Accession Number: 26250277; Choi, Y.S. 1; Email Address: Yoon-Suk.Choi@wpafb.af.mil Uchic, M.D. 2 Parthasarathy, T.A. 1 Dimiduk, D.M. 2; Affiliation: 1: UES, Inc. 4401 Dayton-Xenia Rd., Dayton, OH 45432-1894, USA 2: Air Force Research Laboratory, AFRL/MLLM, 2230 Tenth Street, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Nov2007, Vol. 57 Issue 9, p849; Subject Term: CRYSTALS; Subject Term: NUMERICAL analysis; Subject Term: FINITE element method; Subject Term: CRYSTALLOGRAPHY; Author-Supplied Keyword: Elastic behavior; Author-Supplied Keyword: Finite element analysis; Author-Supplied Keyword: Microcompression; Author-Supplied Keyword: Simulation; Author-Supplied Keyword: Slip; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2007.06.057 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26250277&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Moad, II, James A. T1 - Re-imagining the Past through Letters. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2007/11// VL - 19 IS - 1/2 M3 - Article SP - 325 EP - 336 PB - US Air Force Academy English Department SN - 10466967 AB - The article discusses the author's experiences in writing wartime literature and its significance in helping individuals use their imaginations and express themselves. The distinctions between the idealized literary depiction of war and its harsh realities are highlighted and the educational value of soldiers' writings are stressed. KW - SOLDIERS' writings KW - LITERATURE -- Study & teaching KW - WAR in literature KW - SELF-expression KW - WAR & society N1 - Accession Number: 28106532; Moad, II, James A. 1; Affiliation: 1: English & Fine Arts Department, United States Air Force Academy, Colorado Springs, Colorado.; Source Info: 2007, Vol. 19 Issue 1/2, p325; Subject Term: SOLDIERS' writings; Subject Term: LITERATURE -- Study & teaching; Subject Term: WAR in literature; Subject Term: SELF-expression; Subject Term: WAR & society; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28106532&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Luckarift, Heather R. AU - Greenwald, Roby AU - Bergin, Mike H. AU - Spain, Jim C. AU - Johnson, Glenn R. T1 - Biosensor system for continuous monitoring of organophosphate aerosols JO - Biosensors & Bioelectronics JF - Biosensors & Bioelectronics Y1 - 2007/10/31/ VL - 23 IS - 3 M3 - Article SP - 400 EP - 406 SN - 09565663 AB - Abstract: An enzyme-based monitoring system provides the basis for continuous sampling of organophosphate contamination in air. The enzymes butyrylcholinesterase (BuChE) and organophosphate hydrolase (OPH) are stabilized by encapsulation in biomimetic silica nanoparticles, entrained within a packed bed column. The resulting immobilized enzyme reactors (IMERs) were integrated with an impinger-based aerosol sampling system for collection of chemical contaminants in air. The sampling system was operated continuously and organophosphate detection was performed in real-time by single wavelength analysis of enzyme hydrolysis products. The resulting sensor system detects organophosphates based on either enzyme inhibition (of BuChE) or substrate hydrolysis (by OPH). The detection limits of the IMERs for specific organophosphates are presented and discussed. The system proved suitable for detection of a range of organophosphates including paraoxon, demeton-S and malathion. [Copyright &y& Elsevier] AB - Copyright of Biosensors & Bioelectronics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOSENSORS KW - AEROSOLS (Sprays) KW - ORGANOPHOSPHORUS compounds KW - MEDICAL equipment KW - Aerosol sampling KW - Biosensor KW - Butyrylcholinesterase KW - Enzyme immobilization KW - Impinger KW - Organophosphate hydrolase N1 - Accession Number: 26994743; Luckarift, Heather R. 1; Email Address: hluckarift@gtcom.net Greenwald, Roby 2 Bergin, Mike H. 2 Spain, Jim C. 2 Johnson, Glenn R. 1; Affiliation: 1: Air Force Research Laboratory, 139 Barnes Drive, Suite #2, Tyndall AFB, FL 32403, USA 2: School of Civil and Environmental Engineering and School of Earth and Atmospheric Sciences, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA, USA; Source Info: Oct2007, Vol. 23 Issue 3, p400; Subject Term: BIOSENSORS; Subject Term: AEROSOLS (Sprays); Subject Term: ORGANOPHOSPHORUS compounds; Subject Term: MEDICAL equipment; Author-Supplied Keyword: Aerosol sampling; Author-Supplied Keyword: Biosensor; Author-Supplied Keyword: Butyrylcholinesterase; Author-Supplied Keyword: Enzyme immobilization; Author-Supplied Keyword: Impinger; Author-Supplied Keyword: Organophosphate hydrolase; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 339110 Medical equipment and supplies manufacturing; NAICS/Industry Codes: 339112 Surgical and Medical Instrument Manufacturing; NAICS/Industry Codes: 417930 Professional machinery, equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423450 Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.bios.2007.04.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26994743&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Quan Li AU - Green, Lisa AU - Venkataraman, Nithya AU - Shiyanovskaya, Irma AU - Khan, Asad AU - Urbas, Augustine AU - Doane, J. William T1 - Reversible Photoswitchable Axially Chiral Dopants with High Helical Twisting Power. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2007/10/31/ VL - 129 IS - 43 M3 - Article SP - 12908 EP - 12909 SN - 00027863 AB - The article presents information on reversible photoswitchable behavior of axially chiral dopants. A study showed that chiral dopants are chemically and thermally stable and they exhibit reversible photoswitchable behavior in both organic solvent and liquid crystal media. The reverse process from cis to trans isomer can occur thermally or photochemically with visible light. KW - CHIRALITY KW - CHEMICAL reactions KW - LIQUID crystals KW - PHOTOCHEMISTRY KW - ORGANIC solvents N1 - Accession Number: 27441730; Quan Li 1; Email Address: quan@lci.kentedu Green, Lisa 1 Venkataraman, Nithya 2 Shiyanovskaya, Irma 2 Khan, Asad 2 Urbas, Augustine 3 Doane, J. William 2; Affiliation: 1: Liquid Crystal Institute, Kent State University, Kent, Ohio 44242. 2: Kent Displays, Inc., Kent, Ohio 44240. 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433.; Source Info: 10/31/2007, Vol. 129 Issue 43, p12908; Subject Term: CHIRALITY; Subject Term: CHEMICAL reactions; Subject Term: LIQUID crystals; Subject Term: PHOTOCHEMISTRY; Subject Term: ORGANIC solvents; Number of Pages: 2p; Document Type: Article L3 - 10.1021/ja0747573 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27441730&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Xiaonan Tang AU - Houchins, Cassidy AU - Kai-Chung Lau AU - Ng, C. Y. AU - Dressler, Rainer A. AU - Yu-Hui Chiu AU - Tian-Shu Chu AU - Ke-Li Han T1 - A time-dependent wave packet quantum scattering study of the reaction HD+(v=0–3;j0=1)+He→HeH+(HeD+)+D(H). JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2007/10/28/ VL - 127 IS - 16 M3 - Article SP - 164318 PB - American Institute of Physics SN - 00219606 AB - Time-dependent wave packet quantum scattering (TWQS) calculations are presented for HD+(v=0–3;j0=1)+He collisions in the center-of-mass collision energy (ET) range of 0.0–2.0 eV. The present TWQS approach accounts for Coriolis coupling and uses the ab initio potential energy surface of Palmieri et al. [Mol. Phys. 98, 1839 (2000)]. For a fixed total angular momentum J, the energy dependence of reaction probabilities exhibits quantum resonance structure. The resonances are more pronounced for low J values and for the HeH++D channel than for the HeD++H channel and are particularly prominent near threshold. The quantum effects are no longer discernable in the integral cross sections, which compare closely to quasiclassical trajectory calculations conducted on the same potential energy surface. The integral cross sections also compare well to recent state-selected experimental values over the same reactant and translational energy range. Classical impulsive dynamics and steric arguments can account for the significant isotope effect in favor of the deuteron transfer channel observed for HD+(v<3) and low translational energies. At higher reactant energies, angular momentum constraints favor the proton-transfer channel, and isotopic differences in the integral cross sections are no longer significant. The integral cross sections as well as the J dependence of partial cross sections exhibit a significant alignment effect in favor of collisions with the HD+ rotational angular momentum vector perpendicular to the Jacobi R coordinate. This effect is most pronounced for the proton-transfer channel at low vibrational and translational energies. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVE packets KW - QUANTUM chemistry KW - SCATTERING (Physics) KW - COLLISIONS (Nuclear physics) KW - ANGULAR momentum (Nuclear physics) KW - POTENTIAL energy surfaces N1 - Accession Number: 27370899; Xiaonan Tang 1 Houchins, Cassidy 1 Kai-Chung Lau 1 Ng, C. Y. 1; Email Address: cyng@chem.ucdavis.edu Dressler, Rainer A. 2; Email Address: afrl.rvb.pa@hanscom.af.mil Yu-Hui Chiu 2 Tian-Shu Chu 3 Ke-Li Han 3; Email Address: klhan@dicp.ac.cn; Affiliation: 1: Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731–3010, USA 3: State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; Source Info: 10/28/2007, Vol. 127 Issue 16, p164318; Subject Term: WAVE packets; Subject Term: QUANTUM chemistry; Subject Term: SCATTERING (Physics); Subject Term: COLLISIONS (Nuclear physics); Subject Term: ANGULAR momentum (Nuclear physics); Subject Term: POTENTIAL energy surfaces; Number of Pages: 10p; Illustrations: 1 Diagram, 1 Chart, 10 Graphs; Document Type: Article L3 - 10.1063/1.2800009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27370899&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parthasarathy, T.A. AU - Rapp, R.A. AU - Opeka, M. AU - Kerans, R.J. T1 - A model for the oxidation of ZrB2, HfB2 and TiB2 JO - Acta Materialia JF - Acta Materialia Y1 - 2007/10// VL - 55 IS - 17 M3 - Article SP - 5999 EP - 6010 SN - 13596454 AB - Abstract: A mechanistic model that interprets the oxidation behavior of the diborides of Zr, Hf and Ti in the temperature range of ∼1000–1800°C was formulated. Available thermodynamic data and literature data for vapor pressures and diffusivities were used to evaluate the model. Good correspondence was obtained between theory and experiments for weight gain, recession and scale thickness as functions of temperature and oxygen partial pressure. At temperatures below about 1400°C, the rate-limiting step is the diffusion of dissolved oxygen through a film of liquid boria in capillaries at the base of the oxidation product. At higher temperatures, the boria is lost by evaporation, and the oxidation rate is limited by Knudsen diffusion of molecular oxygen through the capillaries between nearly columnar blocks of the oxide, MO2. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXIDATION KW - TEMPERATURE KW - THERMODYNAMICS KW - VAPOR pressure KW - WEIGHT gain KW - EVAPORATION (Chemistry) KW - HfB2 KW - Model KW - Oxidation KW - TiB2 KW - ZrB2 N1 - Accession Number: 26682002; Parthasarathy, T.A. 1; Email Address: Triplicane.parthasarathy@wpafb.af.mil Rapp, R.A. 2 Opeka, M. 3 Kerans, R.J. 4; Affiliation: 1: UES, Inc., Dayton, OH 45432, USA 2: The Ohio State University, Columbus, OH, USA 3: Naval Surface Warfare Center, Carderock Division, West Bethesda, MD, USA 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLN, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Oct2007, Vol. 55 Issue 17, p5999; Subject Term: OXIDATION; Subject Term: TEMPERATURE; Subject Term: THERMODYNAMICS; Subject Term: VAPOR pressure; Subject Term: WEIGHT gain; Subject Term: EVAPORATION (Chemistry); Author-Supplied Keyword: HfB2; Author-Supplied Keyword: Model; Author-Supplied Keyword: Oxidation; Author-Supplied Keyword: TiB2; Author-Supplied Keyword: ZrB2; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.actamat.2007.07.027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26682002&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, X. AU - Pan, E. AU - Roy, A. K. T1 - Scattering of antiplane shear wave by a piezoelectric circular cylinder with an imperfect interface. JO - Acta Mechanica JF - Acta Mechanica Y1 - 2007/10// VL - 193 IS - 3/4 M3 - Article SP - 177 EP - 195 PB - Springer Science & Business Media B.V. SN - 00015970 AB - We present analytical solutions for the scattering of an antiplane shear wave by a piezoelectric circular cylinder with an imperfect interface. We first consider the simple case in which the imperfection is homogeneous along the interface. Two typical imperfect interfaces are addressed: 1) mechanically compliant and dielectrically weakly conducting interface, and 2) mechanically compliant and dielectrically highly conducting interface. The expressions for the directivity pattern and scattering cross-section of the scattered shear waves are derived. We then investigate the more difficult problem in which the imperfection is circumferentially inhomogeneous along the interface. A concise expression for an inhomogeneously compliant and weakly conducting interface is derived by means of matrix notation. Numerical examples are presented to demonstrate the effect of the imperfection and the circumferential inhomogeneity of the interface on the directivity patterns and scattering cross-sections of the scattered shear wave. The circumferentially inhomogeneous interface is also utilized to model the interface where an arbitrary number of cracks exist. Results show that when every part of the interface is rather compliant, large low-frequency peaks of the scattered cross-sections, which correspond to the resonance scattering, can be observed no matter if the interface is homogeneous or inhomogeneous. The appearance of large low-frequency peaks can be well explained by estimating the natural frequency of the corresponding reduced mass-spring system where the cylinder is assumed as a rigid body. Peaks of the scattered cross-sections spanning from low frequencies to high frequencies can be observed for a cylinder with a partially debonded interface. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Mechanica is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCATTERING (Physics) KW - SHEAR waves KW - ELASTIC waves KW - PIEZOELECTRIC devices KW - INTERFACES (Physical sciences) KW - COMPOSITE materials KW - MICROMECHANICS N1 - Accession Number: 26691238; Wang, X. 1 Pan, E. 1; Email Address: pan2@uakron.edu Roy, A. K. 2; Affiliation: 1: Department of Civil Engineering, University of Akron, Akron 2: Air Force Research Laboratory, AFRL/MLBCM, Bldg. 654, 2941 Hobson Way, Wright-Patterson AFB, OH 45433-7750; Source Info: Oct2007, Vol. 193 Issue 3/4, p177; Subject Term: SCATTERING (Physics); Subject Term: SHEAR waves; Subject Term: ELASTIC waves; Subject Term: PIEZOELECTRIC devices; Subject Term: INTERFACES (Physical sciences); Subject Term: COMPOSITE materials; Subject Term: MICROMECHANICS; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 19p; Illustrations: 1 Diagram, 2 Charts, 8 Graphs; Document Type: Article L3 - 10.1007/s00707-007-0465-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26691238&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rizzetta, Donald P. AU - Visbal, Miguel R. T1 - Numerical Investigation of Plasma-Based Flow Control for Transitional Highly Loaded Low-Pressure Turbine. JO - AIAA Journal JF - AIAA Journal Y1 - 2007/10// VL - 45 IS - 10 M3 - Article SP - 2554 EP - 2554 SN - 00011452 AB - Plasma-based active flow control was simulated numerically for the subsonic flow through a highly loaded lowpressure turbine. The configuration corresponded to previous experiments and computations which considered flow at a Reynolds number of 25,000 based upon axial chord and inlet conditions. In this situation, massive separation occurs on the suction surface of each blade due to uncovered turning. The present exploratory numerical study was performed to investigate the use of asymmetric dielectric--barrier--discharge actuators for mitigating separation, thereby decreasing turbine wake losses and increasing efficiency. Solutions were obtained for the Navier--Stokes equations, which were augmented by a phenomenological model that was used to represent plasma-induced body forces imparted by the actuator on the fluid. The numerical method used a high-fidelity time-implicit scheme, employing domain decomposition to carry out calculations on a parallel computing platform. A high-order overset grid approach preserved spatial accuracy in a locally refined embedded region. The magnitude of the plasma-induced body force required for control is examined, and both continuous and pulse-modulated actuations are considered. Novel use of counterflow actuation is also investigated, and the effects of pulsing frequency and duty cycle are considered. Features of the flowfields are described, and resultant solutions are compared with each other, with previous mass-injection control cases, and with the baseline situation where no control was enforced. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TURBINES KW - AERODYNAMICS KW - SIMULATION methods & models KW - DIELECTRICS KW - ACTUATORS KW - NAVIER-Stokes equations KW - FLUID dynamics N1 - Accession Number: 27222344; Rizzetta, Donald P. 1 Visbal, Miguel R. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512; Source Info: Oct2007, Vol. 45 Issue 10, p2554; Subject Term: TURBINES; Subject Term: AERODYNAMICS; Subject Term: SIMULATION methods & models; Subject Term: DIELECTRICS; Subject Term: ACTUATORS; Subject Term: NAVIER-Stokes equations; Subject Term: FLUID dynamics; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.2514/1.29602 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27222344&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ziegler, A. AU - Cinibulk, M. K. AU - Kisielowski, C. AU - Ritchie, R. O. T1 - Atomic-scale observation of the grain-boundary structure of Yb-doped and heat-treated silicon nitride ceramics. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/10//10/1/2007 VL - 91 IS - 14 M3 - Article SP - 141906 PB - American Institute of Physics SN - 00036951 AB - The effect of secondary sintering additives and/or a post-sintering heat treatment on the semicrystalline atomic structure of the intergranular phase in silicon nitride ceramics is investigated. Three different Yb-doped Si3N4 ceramic compositions are examined using a scanning transmission electron microscope, whereby the intergranular atomic structure is directly imaged with Ångstrom resolution. The resulting high-resolution images show that the atomic arrangement of the Yb takes very periodic positions along the interface between the intergranular phase and the matrix grains, and that a postsintering 1250 °C heat treatment, as well as a change of the secondary sintering additives (Al2O3 vs SiO2), does not alter the atomic positions of Yb. This result has implications for the understanding of how the mechanical properties of ceramics are influenced by the presence of the nanoscale intergranular phase, and for associated computational modeling of its precise role and atomic structure. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SINTERING KW - CRYSTAL grain boundaries KW - YTTERBIUM KW - SILICON nitride KW - DOPED semiconductors KW - ATOMIC structure N1 - Accession Number: 27060971; Ziegler, A. 1 Cinibulk, M. K. 2 Kisielowski, C. 3 Ritchie, R. O. 4; Affiliation: 1: Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 3: Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA 4: Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA and Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA; Source Info: 10/1/2007, Vol. 91 Issue 14, p141906; Subject Term: SINTERING; Subject Term: CRYSTAL grain boundaries; Subject Term: YTTERBIUM; Subject Term: SILICON nitride; Subject Term: DOPED semiconductors; Subject Term: ATOMIC structure; NAICS/Industry Codes: 212210 Iron Ore Mining; Number of Pages: 3p; Illustrations: 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1063/1.2789390 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27060971&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coletta, Damon T1 - Courage in the Service of Virtue: The Case of General Shinseki's Testimony before the Iraq War. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 2007/10// VL - 34 IS - 1 M3 - Article SP - 109 EP - 121 SN - 0095327X AB - Army Chief of Staff Eric Shinseki testified to the Senate Armed Services Committee before Operation Iraqi Freedom that several hundred thousand American Army soldiers were needed to occupy Iraq following a successful completion of the war. In hindsight, after many postwar problems occurred during Army and Marine efforts to stabilize Iraq, General Shinseki's action has been almost universally praised as prescient and courageous. This article counters that, from a civil-military relations perspective, Shinseki's testimony was neither sufficiently accurate nor sufficiently respectful of civilian control to serve as a healthy model for future officers. The U.S. civil-military relationship framed by the 1986 Goldwater-Nichols Act, which preserved the power of individual service chiefs to provide independent testimony, is better served when high-ranking officers adopt a notion of courage in light of military authority delegated to regional combatant commands and in consideration of the political vulnerabilities of their civilian masters. [ABSTRACT FROM AUTHOR] AB - Copyright of Armed Forces & Society (0095327X) is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARMED Forces KW - CIVIL supremacy over the military KW - IRAQ War, 2003-2011 KW - GOVERNMENT policy KW - MILITARY planning KW - UNITED States KW - civilian control KW - Goldwater-Nichols KW - Iraq Crisis KW - Joint Chiefs of Staff KW - SHINSEKI, Eric K., 1942- N1 - Accession Number: 26986696; Coletta, Damon 1; Email Address: damon.coletta@usafa.af.mil; Affiliation: 1: Professor of Political Science, United States Air Force Academy (Colorado Springs, Colorado).; Source Info: Oct2007, Vol. 34 Issue 1, p109; Subject Term: ARMED Forces; Subject Term: CIVIL supremacy over the military; Subject Term: IRAQ War, 2003-2011; Subject Term: GOVERNMENT policy; Subject Term: MILITARY planning; Subject Term: UNITED States; Author-Supplied Keyword: civilian control; Author-Supplied Keyword: Goldwater-Nichols; Author-Supplied Keyword: Iraq Crisis; Author-Supplied Keyword: Joint Chiefs of Staff; NAICS/Industry Codes: 928110 National Security; People: SHINSEKI, Eric K., 1942-; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26986696&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Greenburg, David L. AU - Mo, Clifton C. AU - Hemmer, Paul A. T1 - IVIG for Thymoma-Associated Pseudo-Obstruction: Report of Successful Treatment. JO - European Neurology JF - European Neurology Y1 - 2007/10// VL - 58 IS - 2 M3 - Article SP - 116 EP - 117 SN - 00143022 AB - A letter to the editor is presented that reports the efficiency of intravenous immunoglobulin for treating refractory thymoma-associated pseudo-obstruction. KW - LETTERS to the editor KW - IMMUNOGLOBULINS -- Therapeutic use N1 - Accession Number: 26147624; Greenburg, David L. 1; Email Address: dgreenburg@usuhs.mil Mo, Clifton C. 1 Hemmer, Paul A. 2; Affiliation: 1: United States Army, Walter Reed Army Medical Center, Washington, D.C. 2: United States Air Force, Uniformed Services University of the Health Sciences, Bethesda, Md., USA; Source Info: 2007, Vol. 58 Issue 2, p116; Subject Term: LETTERS to the editor; Subject Term: IMMUNOGLOBULINS -- Therapeutic use; Number of Pages: 2p; Document Type: Article L3 - 10.1159/000103648 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26147624&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Estevadeordal, Jordi AU - Gogineni, Sivaram AU - Kimmel, Roger L. AU - Hayes, James R. T1 - Investigation of low-density hypersonic and plasma flows by schlieren system using various light sources JO - Experimental Thermal & Fluid Science JF - Experimental Thermal & Fluid Science Y1 - 2007/10// VL - 32 IS - 1 M3 - Article SP - 98 EP - 106 SN - 08941777 AB - Abstract: The results of an experimental investigation of low-density hypersonic and plasma flows using a schlieren system with various light sources are reported. In addition to the commonly used Nanopulser, two other pulsed light sources – LED and laser breakdown – are employed. As expected, the Nanopulser furnishes excellent, short-duration illumination pulses although illumination varies from shot-to-shot. Laser breakdown supplies short-duration, incoherent illumination that is constant from pulse-to-pulse. LED systems provide excellent steady illumination with significant advantages such as lower cost, monochromatic light and pulsed- and continuous-mode operation. [Copyright &y& Elsevier] AB - Copyright of Experimental Thermal & Fluid Science is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - HYPERSONIC aerodynamics KW - SUPERSONIC aerodynamics KW - MACH number KW - Hypersonics KW - Laser KW - LED KW - Plasma KW - Schlieren N1 - Accession Number: 26680399; Estevadeordal, Jordi 1; Email Address: jordie@innssi.com Gogineni, Sivaram 1 Kimmel, Roger L. 2 Hayes, James R. 2; Affiliation: 1: Innovative Scientific Solutions, Inc. Dayton, OH 45440-3638, United States 2: Air Vehicles Directorate, Air Force Research Laboratory Wright-Patterson AFB, OH 45433-7542, United States; Source Info: Oct2007, Vol. 32 Issue 1, p98; Subject Term: LASERS; Subject Term: HYPERSONIC aerodynamics; Subject Term: SUPERSONIC aerodynamics; Subject Term: MACH number; Author-Supplied Keyword: Hypersonics; Author-Supplied Keyword: Laser; Author-Supplied Keyword: LED; Author-Supplied Keyword: Plasma; Author-Supplied Keyword: Schlieren; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.expthermflusci.2007.02.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26680399&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Winterbottom, Marc D. AU - Patterson, Robert AU - Pierce, Byron J. AU - Covas, Christine M. AU - Winner, Jennifer T1 - Depth of focus and visual recognition of imagery presented on simultaneously viewed displays: implications for head-mounted displays. JO - Human Factors JF - Human Factors Y1 - 2007/10// VL - 49 IS - 5 M3 - journal article SP - 907 EP - 919 SN - 00187208 AB - Objective: We sought to determine the optimal focal distance for a semitransparent monocular head-mounted display (HMD) integrated with a flight simulator display and to investigate whether observers experienced visual discomfort or impaired target recognition when using an HMD set at the optimal distance.Background: When an observer wears a monocular HMD and views a simulator display, focal distances of both displays must be within the observers' depth of focus to prevent blurred imagery. Because focal distance can vary by as much as 0.5 m in U.S. Air Force multifaceted simulator displays, we determined whether a monocular HMD could be integrated with a simulator display without blurred imagery or discomfort.Method: Depth of focus and visual recognition were measured with a staircase procedure, and visual discomfort was measured with a questionnaire.Results: Depth of focus was 0.64 diopters in one condition tested, but it was affected by luminance level and display resolution. It was recommended that HMD focal distance equal the optical midpoint of the range of viewing distances encountered in the simulator. Moreover, wearing an HMD produced a decline in recognition performance for targets presented on the simulator display despite both displays being within observers' depth of focus and producing no visual discomfort.Conclusion: Monocular HMDs can be integrated with multifaceted simulator displays without blurred imagery or visual discomfort, provided that the correct focal distance is adopted.Application: For situations involving simultaneously viewed visual displays. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLIGHT simulators KW - FLIGHT training KW - VISUAL perception KW - VISUAL acuity KW - AIR forces KW - DISTANCES KW - UNITED States N1 - Accession Number: 26518743; Winterbottom, Marc D. 1 Patterson, Robert 2; Email Address: rpatter@mail.wsu.edu Pierce, Byron J. 3 Covas, Christine M. 3 Winner, Jennifer 4; Affiliation: 1: U .S. Air Force Research Laboratory, Mesa, Arizona 2: Washington State University, Pullman, Washington 3: U.S. Air Force Research Laboratory, Mesa, Arizona 4: Link Simulation and Training, Mesa, Arizona; Source Info: Oct2007, Vol. 49 Issue 5, p907; Subject Term: FLIGHT simulators; Subject Term: FLIGHT training; Subject Term: VISUAL perception; Subject Term: VISUAL acuity; Subject Term: AIR forces; Subject Term: DISTANCES; Subject Term: UNITED States; NAICS/Industry Codes: 611512 Flight Training; Number of Pages: 13p; Document Type: journal article L3 - 10.1518/001872007X230253 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26518743&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jessen, Gregg H. AU - Fitch Jr., Robert C. AU - Gillespie, James K. AU - Via, Glen AU - Crespo, Antonio AU - Langley, Derrick AU - Denninghoff, Daniel J. AU - Trejo Jr., Manuel AU - Heller, Eric R. T1 - Short-Channel Effect Limitations on High-Frequency Operation of A1GaN/GaN HEMTs for T-Gate Devices. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices Y1 - 2007/10// VL - 54 IS - 10 M3 - Article SP - 2589 EP - 2597 SN - 00189383 AB - AIGaN/GaN high-electron mobility transistors (HEMTs) were fabricated on SiC substrates with epitaxial layers grown by multiple suppliers and methods. Devices with gate lengths varying from 0.50 to 0.09 μm were fabricated on each sample. We demonstrate the impact of varying the gate lengths and show that the unity current gain frequency response (fT) is limited by short-channel effects for all samples measured. We present an empirically based physical model that can predict the expected extrinsic fT for many combinations of gate length and commonly used barrier layer thickness (tbar) on silicon nitride passivated T-gated AIGaN/GaN HEMTs. The result is that even typical high-aspect-ratio (gate length to barrier thickness) devices show device performance limitations due to short-channel effects. We present the design tradeoffs and show the parameter space required to achieve optimal frequency performance for GaN technology. These design rules differ from the traditional GaAs technology by requiring a significantly higher aspect ratio to mitigate the short-channel effects. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MODULATION-doped field-effect transistors KW - FREQUENCIES of oscillating systems KW - EPITAXY KW - FREQUENCY response (Electrical engineering) KW - SILICON nitride KW - METALLURGICAL analysis KW - METAL organic chemical vapor deposition KW - MOLECULAR beam epitaxy KW - SEMICONDUCTOR wafers KW - AIGaN KW - GaN KW - high-electron mobility transistor (HEMT) KW - power KW - short-channel effect N1 - Accession Number: 26953909; Jessen, Gregg H. 1 Fitch Jr., Robert C. 1 Gillespie, James K. 1 Via, Glen 1 Crespo, Antonio 1 Langley, Derrick 1 Denninghoff, Daniel J. 1 Trejo Jr., Manuel 1 Heller, Eric R. 2; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433 USA 2: Semiconductor Research Center, Wright State University, Dayton, OH 45435 USA; Source Info: Oct2007, Vol. 54 Issue 10, p2589; Subject Term: MODULATION-doped field-effect transistors; Subject Term: FREQUENCIES of oscillating systems; Subject Term: EPITAXY; Subject Term: FREQUENCY response (Electrical engineering); Subject Term: SILICON nitride; Subject Term: METALLURGICAL analysis; Subject Term: METAL organic chemical vapor deposition; Subject Term: MOLECULAR beam epitaxy; Subject Term: SEMICONDUCTOR wafers; Author-Supplied Keyword: AIGaN; Author-Supplied Keyword: GaN; Author-Supplied Keyword: high-electron mobility transistor (HEMT); Author-Supplied Keyword: power; Author-Supplied Keyword: short-channel effect; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 9p; Illustrations: 8 Black and White Photographs, 2 Charts, 9 Graphs; Document Type: Article L3 - 10.1109/TED.2007.904476 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26953909&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ruan, Y. AU - Hong, L. AU - Wicker, D. T1 - Analytic performance prediction of feature-aided global nearest neighbour algorithm in dense target scenarios. JO - IET Radar, Sonar & Navigation JF - IET Radar, Sonar & Navigation Y1 - 2007/10// VL - 1 IS - 5 M3 - Article SP - 369 EP - 376 PB - Institution of Engineering & Technology SN - 17518784 AB - An analytic performance prediction method for the feature-aided global nearest neighbour tracking algorithm in multi-target tracking (MTT) scenarios is proposed. The approach serves as an alternative to the costly Monte Carlo simulation method. In MTT, evaluation of interference among multiple targets remains a crucial issue on tracking performance study. This issue is investigated in dense target scenarios with feature information and unrestrictive motion. Analytic expressions are developed for tracking performance in terms of the probability of correct association and estimation accuracy. Feature information of targets is incorporated in the formulation which provides us an insight on how the tracking performance is impacted by features. In the derivations, a series of simplification assumptions are made and the results are not intended to be used directly in practical tracking applications. The major contribution of the paper is to provide a theoretical exploration and a methodology for analytic performance prediction of MTT. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AUTOMATIC tracking KW - ALGORITHMS KW - MONTE Carlo method KW - SIMULATION methods & models KW - ESTIMATION theory KW - PROBABILITY theory N1 - Accession Number: 26231696; Ruan, Y. 1 Hong, L. 1; Email Address: lang.hong@wright.edu Wicker, D. 2; Affiliation: 1: Electrical Engineering Department, Wright State University, Dayton, OH 45435, USA 2: Air Force Research Laboratory, SNAT WPAFB, OH 45433, USA; Source Info: Oct2007, Vol. 1 Issue 5, p369; Subject Term: AUTOMATIC tracking; Subject Term: ALGORITHMS; Subject Term: MONTE Carlo method; Subject Term: SIMULATION methods & models; Subject Term: ESTIMATION theory; Subject Term: PROBABILITY theory; Number of Pages: 8p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1049/iet-rsn:20050110 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26231696&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiao, C.Q. AU - DeJoseph, C.A. AU - Garscadden, A. T1 - Dissociative ionization of JP-10 (C10H16) by electron impact JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2007/10// VL - 266 IS - 1-3 M3 - Article SP - 92 EP - 96 SN - 13873806 AB - Abstract: Ionization of JP-10 (C10H16, exo-tricycle [5.2.1.02,6] decane) by electron impact has been studied using Fourier transform mass spectrometry. Absolute total and partial ionization cross-sections have been measured as functions of the electron energy in the range of 10–200eV. The major channel of parent ion fragmentation at low energies (<27eV) produces C9H13+, and at higher energies, C5H7+. Possible fragmentation mechanisms are discussed. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MASS spectrometry KW - MASS (Physics) KW - PARTICLES (Nuclear physics) KW - SCISSION (Chemistry) KW - Electron impact KW - Fragmentation KW - Fuel KW - Ionization KW - JP-10 N1 - Accession Number: 26490547; Jiao, C.Q. 1 DeJoseph, C.A. 2 Garscadden, A. 2; Email Address: alan.garscadden@wpafb.af.mil; Affiliation: 1: Innovative Scientific Solutions Inc., Dayton, OH 45440-3638, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7251, USA; Source Info: Oct2007, Vol. 266 Issue 1-3, p92; Subject Term: MASS spectrometry; Subject Term: MASS (Physics); Subject Term: PARTICLES (Nuclear physics); Subject Term: SCISSION (Chemistry); Author-Supplied Keyword: Electron impact; Author-Supplied Keyword: Fragmentation; Author-Supplied Keyword: Fuel; Author-Supplied Keyword: Ionization; Author-Supplied Keyword: JP-10; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.ijms.2007.07.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26490547&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sayegh, Lisa AU - Harrison, Dianne F. T1 - Air Force Commanders' Disciplinary Decisions on Spouse Abuse Cases. JO - Journal of Aggression, Maltreatment & Trauma JF - Journal of Aggression, Maltreatment & Trauma Y1 - 2007/10// VL - 15 IS - 1 M3 - Article SP - 75 SN - 10926771 AB - Inconsistencies exist among Air Force commanders when disciplining spouse abuse offenders, possibly owing to inadequate training, unclear role expectations, conflicting policy statements, or personal biases. This situation may lead to inappropriate decisions, further endangering victims and negatively impacting mission readiness. A sample of 624 Air Force squadron commanders was surveyed to measure how their perceived role and operations tempo affect their disciplinary decisions on two abuse scenarios. The study tested role and decision-theory concepts. Statistical results supported role theory in the predicted direction, and decision theory, but in the opposite direction hypothesized. Implications for theory, practice, and policy development for the military are discussed. doi:10.1300/J146v15n01_05 [ABSTRACT FROM PUBLISHER] AB - Copyright of Journal of Aggression, Maltreatment & Trauma is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY officers KW - WIFE abuse KW - ABUSE of women KW - ABUSIVE behavior KW - OPERANT behavior KW - MENTAL depression KW - PERSONALITY disorders KW - AFFECTIVE disorders KW - PATHOLOGICAL psychology KW - THERAPEUTICS KW - commanders KW - decision theory KW - domestic violence KW - intimate partner violence KW - Military KW - role theory N1 - Accession Number: 27706652; Sayegh, Lisa 1; Email Address: lisa.sayegh@usafa.af.mil Harrison, Dianne F. 2; Affiliation: 1: Assistant Professor, Department of Behavioral Sciences and Leadership, United States Air Force Academy., United States Air Force Academy, CO, 80840-6228 2: President, California State University, Monterey Bay; Source Info: 2007, Vol. 15 Issue 1, p75; Subject Term: MILITARY officers; Subject Term: WIFE abuse; Subject Term: ABUSE of women; Subject Term: ABUSIVE behavior; Subject Term: OPERANT behavior; Subject Term: MENTAL depression; Subject Term: PERSONALITY disorders; Subject Term: AFFECTIVE disorders; Subject Term: PATHOLOGICAL psychology; Subject Term: THERAPEUTICS; Author-Supplied Keyword: commanders; Author-Supplied Keyword: decision theory; Author-Supplied Keyword: domestic violence; Author-Supplied Keyword: intimate partner violence; Author-Supplied Keyword: Military; Author-Supplied Keyword: role theory; Number of Pages: 17p; Illustrations: 4 Charts; Document Type: Article L3 - 10.1300/J146v15n0105 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27706652&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, L. AU - Lee, H. AU - Guo, Z. J. AU - McGruer, N. E. AU - Gilbert, K. W. AU - Mall, S. AU - Leedy, K. D. AU - Adams, G. G. T1 - Contact resistance study of noble metals and alloy films using a scanning probe microscope test station. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/10// VL - 102 IS - 7 M3 - Article SP - 074910 PB - American Institute of Physics SN - 00218979 AB - The proper selection of electrical contact materials is one of the critical steps in designing a metal contact microelectromechanical system (MEMS) switch. Ideally, the contact should have both very low contact resistance and high wear resistance. Unfortunately this combination cannot be easily achieved with the contact materials currently used in macroswitches because the available contact force in microswitches is generally insufficient (less than 1 mN) to break through nonconductive surface layers. As a step in the materials selection process, three noble metals, platinum (Pt), rhodium (Rh), ruthenium (Ru), and their alloys with gold (Au) were deposited as thin films on silicon (Si) substrates. The contact resistances of these materials and their evolution with cycling were measured using a specially developed scanning probe microscope test station. These results were then compared to measurements of material hardness and resistivity. The initial contact resistances of the noble metals alloyed with Au are roughly proportional to their resistivities. Measurements of contact resistance during cycling of different metal films were made under a contact force of 200–250 μN in a room air environment. It was found that the contact resistance increases with cycling for alloy films with a low concentration of gold due to the buildup of contamination on the contact. However, for alloy films with a high gold content, the contact resistance increase due to contamination is insignificant up to 108 cycles. These observations suggest that Rh, Ru, and Pt and their gold alloys of low gold content are prone to contamination failure as contact materials in MEMS switches. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTROMECHANICAL systems KW - PLATINUM group KW - MATTER -- Properties KW - MECHATRONICS KW - ELECTROMECHANICAL devices KW - THIN films KW - SURFACES (Technology) N1 - Accession Number: 27086828; Chen, L. 1 Lee, H. 2 Guo, Z. J. 1 McGruer, N. E. 1 Gilbert, K. W. 3 Mall, S. 3 Leedy, K. D. 4 Adams, G. G. 5; Affiliation: 1: Department of Electrical and Computer Engineering, Northeastern University, Boston, Massachusetts 02115, USA 2: School of Advanced Materials Engineering, Andong National University, Andong, Kyungbuk 760-749, South Korea 3: Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433, USA 4: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA 5: Department of Mechanical and Industrial Engineering, Northeastern University, Boston, Massachusetts 02115, USA; Source Info: Oct2007, Vol. 102 Issue 7, p074910; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: PLATINUM group; Subject Term: MATTER -- Properties; Subject Term: MECHATRONICS; Subject Term: ELECTROMECHANICAL devices; Subject Term: THIN films; Subject Term: SURFACES (Technology); NAICS/Industry Codes: 334290 Other Communications Equipment Manufacturing; NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; NAICS/Industry Codes: 334514 Totalizing Fluid Meter and Counting Device Manufacturing; NAICS/Industry Codes: 334512 Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 7p; Illustrations: 2 Black and White Photographs, 2 Diagrams, 2 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.2785951 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27086828&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morgan A. Bishop AU - Arkadii G. D' yachkov AU - Anthony J. Macula AU - Thomas E. Renz AU - Vyacheslav V. Rykov T1 - Free Energy Gap and Statistical Thermodynamic Fidelity of DNA Codes. JO - Journal of Computational Biology JF - Journal of Computational Biology Y1 - 2007/10// VL - 14 IS - 8 M3 - Article SP - 1088 EP - 1104 SN - 10665277 AB - DNA nanotechnology often requires collections of oligonucleotides called “DNA free energy gap codes” that do not produce erroneous crosshybridizations in a competitive muliplexing environment. This paper addresses the question of how to design these codes to accomplish a desired amount of work within an acceptable error rate. Using a statistical thermody namic and probabilistic model of DNA code fidelity and mathematical random coding theory methods, theoretical lower bounds on the size of DNA codes are given. More importantly, DNA code design parameters (e.g., strand number, strand length and sequence composition) needed to achieve experimental goals are identified. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Computational Biology is the property of Mary Ann Liebert, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DNA KW - OLIGONUCLEOTIDES KW - STATISTICAL thermodynamics KW - NANOTECHNOLOGY N1 - Accession Number: 27414056; Morgan A. Bishop 1 Arkadii G. D' yachkov 2 Anthony J. Macula 3 Thomas E. Renz 4 Vyacheslav V. Rykov 5; Affiliation: 1: JEANSEE, Geneseo, New York. 2: Faculty of Mechanics and Mathematics, Department of Probability Theory, Moscow State University, Moscow, Russia. 3: Biomathematics Group, SUNY Geneseo, Geneseo, New York. 4: Air Force Research Laboratory, IFTC, Rome Research Site, Rome, New York. 5: Department of Mathematics, University of Nebraska-Omaha, Omaha, Nebraska.; Source Info: Oct2007, Vol. 14 Issue 8, p1088; Subject Term: DNA; Subject Term: OLIGONUCLEOTIDES; Subject Term: STATISTICAL thermodynamics; Subject Term: NANOTECHNOLOGY; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; Number of Pages: 17p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27414056&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adekore, B.T. AU - Callahan, M.J. AU - Bouthillette, L. AU - Dalmau, R. AU - Sitar, Z. T1 - Synthesis of erbium-doped gallium nitride crystals by the ammonothermal route JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2007/10// VL - 308 IS - 1 M3 - Article SP - 71 EP - 79 SN - 00220248 AB - Abstract: Gallium nitride (GaN) crystals doped with erbium were grown via the ammonothermal processes on hydride vapor phase epitaxy (HVPE) GaN seeds. The crystallization conducted in alkaline solutions of supercritical ammonia and potassium azide (KN3) at temperatures between 525 and 550°C yielded growth rates of 15 and 50μmday on the gallium and nitrogen polar faces, respectively. X-ray diffraction studies indicated single-crystalline growth on the N-polar surface while the Ga-polar surfaces resulted in polycrystalline growth. Photoluminescence spectra acquired at 15K showed optical transitions corresponding to the inner shell transitions of erbium centers as well as a strong band edge and blue luminescence peaks centered at 3.495 and 2.90eV, respectively. The incorporation of unintentional impurities, such as oxygen, was found by secondary ion mass spectroscopy (SIMS) to be mitigated to ∼1×1019 and ∼7×1019 cm−3 on the gallium and nitrogen polar faces, respectively. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - HYDRIDES KW - CRYSTALLIZATION KW - X-ray diffraction KW - A2. Ammonothermal KW - A2. Bulk GaN KW - A2. Growth from solution KW - B1. Nitrides KW - B1. Rare earth compounds KW - B2. Semiconducting III–V materials N1 - Accession Number: 27002187; Adekore, B.T. 1; Email Address: bainitic@mac.com Callahan, M.J. 2 Bouthillette, L. 2 Dalmau, R. 1 Sitar, Z. 1; Affiliation: 1: Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695-7919, USA 2: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA 01730, USA; Source Info: Oct2007, Vol. 308 Issue 1, p71; Subject Term: GALLIUM nitride; Subject Term: HYDRIDES; Subject Term: CRYSTALLIZATION; Subject Term: X-ray diffraction; Author-Supplied Keyword: A2. Ammonothermal; Author-Supplied Keyword: A2. Bulk GaN; Author-Supplied Keyword: A2. Growth from solution; Author-Supplied Keyword: B1. Nitrides; Author-Supplied Keyword: B1. Rare earth compounds; Author-Supplied Keyword: B2. Semiconducting III–V materials; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jcrysgro.2007.07.058 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27002187&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kundu, Tribikram AU - Das, Samik AU - Jata, Kumar V. T1 - Point of impact prediction in isotropic and anisotropic plates from the acoustic emission data. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2007/10// VL - 122 IS - 4 M3 - Article SP - 2057 EP - 2066 SN - 00014966 AB - It is shown in this paper that the conventional triangulation technique is not very reliable for locating the impact point even in isotropic plates when the sensors are placed close to the point of strike for two reasons: First, it is difficult to pinpoint the exact time of arrival of the signal and, second, the Lamb modes in a plate are dispersive. Dispersive signals attenuate differently at various frequencies and propagate with different speeds causing distortions in the received signals, and thus introduce error in the time of flight measurement. The triangulation technique assumes that wave speeds in all directions are the same, which is not true for anisotropic plates. Here an alternative approach based on an optimization scheme is proposed to locate the point of impact in isotropic and anisotropic plates. A formulation is presented for the general anisotropic case. Experiments are carried out with an aluminum plate by dropping balls on the plate and picking up acoustic signals at different locations. The impact points predicted by the conventional triangulation technique and the proposed modified method are compared for this isotropic plate. Then it is investigated how the prediction would change if the plate is assumed to have some anisotropy. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOUND KW - DETECTORS KW - TRIANGULATION KW - SOUND waves KW - VIBRATION (Mechanics) KW - ANISOTROPY N1 - Accession Number: 26773893; Kundu, Tribikram 1; Email Address: tkundu@email.arizona.edu Das, Samik 1; Email Address: samik@email.arizona.edu Jata, Kumar V. 2; Email Address: kumar.jata@wpafb.af.mil; Affiliation: 1: Department of Civil Engineering and Engineering Mechanics, University of Arizona, Tucson, Arizona 85721 2: Air Force Research Laboratory, MLLP, NDE Branch, Wright Patterson Air Force Base, Ohio 45433; Source Info: Oct2007, Vol. 122 Issue 4, p2057; Subject Term: SOUND; Subject Term: DETECTORS; Subject Term: TRIANGULATION; Subject Term: SOUND waves; Subject Term: VIBRATION (Mechanics); Subject Term: ANISOTROPY; Number of Pages: 10p; Illustrations: 3 Color Photographs, 2 Diagrams, 11 Graphs; Document Type: Article L3 - 10.1121/1.2775322 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26773893&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mogilevsky, Pavel AU - Kerans, Ronald J. AU - Lee, Hee Dong AU - Keller, Kristin A. AU - Parthasarathy, Triplicane A. T1 - On Densification of Porous Materials Using Precursor Solutions. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2007/10// VL - 90 IS - 10 M3 - Article SP - 3073 EP - 3084 PB - Wiley-Blackwell SN - 00027820 AB - A quantitative model describing the densification of porous compacts using liquid solutions that takes into account the gradual sealing-off of the porosity has been proposed. The model was applied to experimental data on densification of alumina compacts and alumina fiber-reinforced ceramic composites infiltrated by an aqueous CrO3 solution. The results obtained with the present model were in good agreement with those expected based on the statistical models and computer simulations of the packing of spheres. Recommendations to improve the efficiency of the densification of porous materials using precursor solutions are suggested based on the results of the present work. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POROUS materials KW - ALUMINUM oxide KW - CERAMICS KW - COMPUTER simulation KW - SIMULATION methods & models KW - FIBROUS composites KW - NUMERICAL analysis KW - MATHEMATICAL analysis N1 - Accession Number: 26612068; Mogilevsky, Pavel 1; Email Address: Pavel.Mogilevsky@wpafb.af.mil Kerans, Ronald J. 2 Lee, Hee Dong 1 Keller, Kristin A. 1 Parthasarathy, Triplicane A. 1; Affiliation: 1: UES Inc., Dayton, Ohio 45432 2: Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433; Source Info: Oct2007, Vol. 90 Issue 10, p3073; Subject Term: POROUS materials; Subject Term: ALUMINUM oxide; Subject Term: CERAMICS; Subject Term: COMPUTER simulation; Subject Term: SIMULATION methods & models; Subject Term: FIBROUS composites; Subject Term: NUMERICAL analysis; Subject Term: MATHEMATICAL analysis; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; Number of Pages: 12p; Illustrations: 3 Diagrams, 2 Charts, 12 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2007.01889.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26612068&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beckel, Eric R. AU - Natarajan, Lalgudi V. AU - Tondiglia, Vincent P. AU - Sutherland, Richard L. AU - Bunning, Timothy J. T1 - Electro-optical properties of holographically patterned polymer-stabilized cholesteric liquid crystals. JO - Liquid Crystals JF - Liquid Crystals Y1 - 2007/10// VL - 34 IS - 10 M3 - Article SP - 1151 EP - 1158 SN - 02678292 AB - Electro-optical properties of cholesteric liquid crystals (LCs) with holographically patterned polymer stabilization were examined. It is hypothesized that increasing the LC domain size in a single dimension, relative to a random three-dimensional network of LC pockets separated by polymer strands, will allow enhanced electro-optical properties of the final device. Prior to holographic patterning, polymer stabilization with large elastic memory was generated by way of high irradiation intensities and optimized material choices. High irradiation intensities are required for the holographic patterning process to maintain polymer layer formation. At optimized conditions, polymer patterning of the stabilization allowed for an approximate 20% increase in the clear state transmission of the device, and allowed for an approximate 3 V µm-1 reduction in the overall switching voltage as compared to an analogous floodlit irradiated sample. Switching times were increased at most threefold with holographic patterning, but all relaxation times were below 20 ms. The enhanced electro-optical properties appear to stem from a single dimension domain size increase, which allows for a reduction in the LC/polymer interaction. [ABSTRACT FROM AUTHOR] AB - Copyright of Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - LIQUID crystals KW - MACROMOLECULES KW - IRRADIATION KW - LIGHT sources N1 - Accession Number: 27256819; Beckel, Eric R. 1,2 Natarajan, Lalgudi V. 2,3 Tondiglia, Vincent P. 2,3 Sutherland, Richard L. 2,3 Bunning, Timothy J. 2; Email Address: timothy.bunning@wpafb.af.mil; Affiliation: 1: General Dynamics Information Technology, Dayton, OH 45431,Air Force Research Laboratory, WPAFB, OH 45433, USA. 2: Air Force Research Laboratory, WPAFB, OH 45433, USA. 3: Science Applications International Corporation, Dayton, OH 45431,Air Force Research Laboratory, WPAFB, OH 45433, USA.; Source Info: Oct2007, Vol. 34 Issue 10, p1151; Subject Term: POLYMERS; Subject Term: LIQUID crystals; Subject Term: MACROMOLECULES; Subject Term: IRRADIATION; Subject Term: LIGHT sources; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 8p; Illustrations: 1 Diagram, 7 Graphs; Document Type: Article L3 - 10.1080/02678290701663753 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27256819&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lilly, T. C. AU - Duncan, J. A. AU - Nothnagel, S. L. AU - Gimelshein, S. F. AU - Gimelshein, N. E. AU - Ketsdever, A. D. AU - Wysong, I. J. T1 - Numerical and experimental investigation of microchannel flows with rough surfaces. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2007/10// VL - 19 IS - 10 M3 - Article SP - 106101 PB - American Institute of Physics SN - 10706631 AB - A conical surface roughness model applicable to particle simulations has been developed. The model has been experimentally validated for channel flows using helium and nitrogen gases at Reynolds numbers from 0.01 to 10 based on inlet conditions. To efficiently simulate gas-surface interaction, molecular collisions with the actual rough surface are simulated by collisions with a randomly positioned conical hole having a fixed opening angle. This model requires only one surface parameter, average surface roughness angle. This model has also been linked to the Cercignani-Lampis scattering kernel as a required reference for use in deterministic kinetic solvers. Experiments were conducted on transitional flows through a 150 μm tall, 1 cm wide, 1.5 cm long microchannel where the mean free path is on the order of the roughness size. The channel walls were made of silicon with: (i) polished smooth surfaces, (ii) regular triangular roughness, and (iii) regular square roughness with characteristic roughness scales of <1 μm, 11 μm, and 29 μm, respectively. For the triangular roughness, mass flow reductions ranged from 6% at the higher stagnation pressures tested to 25% at the lower stagnation pressures tested when compared to the smooth channel. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACES (Physics) KW - CHEMICAL elements KW - AERODYNAMICS KW - ATMOSPHERIC pressure KW - MICROREACTORS KW - PHYSICAL & theoretical chemistry N1 - Accession Number: 27370753; Lilly, T. C. 1; Email Address: tlilly@usc.edu Duncan, J. A. 1 Nothnagel, S. L. 1 Gimelshein, S. F. 2 Gimelshein, N. E. 2 Ketsdever, A. D. 3 Wysong, I. J. 3; Affiliation: 1: Department of Aerospace and Mechanical Engineering, University of Southern California, Los Angeles, California 90089, USA 2: ERC Inc., Edwards Air Force Base, California 93524, USA 3: Air Force Research Laboratory, Propulsion Directorate, Edwards Air Force Base, California 93524, USA; Source Info: Oct2007, Vol. 19 Issue 10, p106101; Subject Term: SURFACES (Physics); Subject Term: CHEMICAL elements; Subject Term: AERODYNAMICS; Subject Term: ATMOSPHERIC pressure; Subject Term: MICROREACTORS; Subject Term: PHYSICAL & theoretical chemistry; Number of Pages: 9p; Illustrations: 1 Black and White Photograph, 3 Diagrams, 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1063/1.2775977 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27370753&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kaya, Savas AU - Hamed, Hesham F.A. AU - Ting, Darwin T. AU - Creech, Gregory T1 - Reconfigurable threshold logic gates with nanoscale DG-MOSFETs JO - Solid-State Electronics JF - Solid-State Electronics Y1 - 2007/10// VL - 51 IS - 10 M3 - Article SP - 1301 EP - 1307 SN - 00381101 AB - Abstract: The benefits in using double-gate (DG) MOSFETs as components of threshold logic gates (TLG) have been analyzed for the first time. A novel, variable-weight DG-TLG has also been proposed, which can greatly widen the range of reconfigurable functions accessible to users. Both fixed and variable-weight DG-TLG circuits operate correctly at a low supply voltage of 1.0V, and outperform the conventional CMOS equivalents in terms of the most important metrics such as power, speed and area. It is found that variable-weight DG-TLG circuits with analog weight and threshold control have attractive features such as expanded TLG functionality, reduced transistor count, low programming voltages and power-scaling capability, particularly for circuits with four or fewer inputs. [Copyright &y& Elsevier] AB - Copyright of Solid-State Electronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYMBOLIC & mathematical logic KW - MATHEMATICS KW - SET theory KW - METAMATHEMATICS KW - Double-gate MOSFETs KW - Reconfigurable logic systems KW - SOI KW - Threshold logic N1 - Accession Number: 27051530; Kaya, Savas 1; Email Address: kaya@ohio.edu Hamed, Hesham F.A. 1 Ting, Darwin T. 1 Creech, Gregory 2; Affiliation: 1: School of Electrical Engineering and Computer Science, Russ College of Engineering and Technology, Ohio University, Athens, OH 45701, USA 2: Sensors Directorate, WPAFB Air Force Research Laboratory Dayton, OH 45433, USA; Source Info: Oct2007, Vol. 51 Issue 10, p1301; Subject Term: SYMBOLIC & mathematical logic; Subject Term: MATHEMATICS; Subject Term: SET theory; Subject Term: METAMATHEMATICS; Author-Supplied Keyword: Double-gate MOSFETs; Author-Supplied Keyword: Reconfigurable logic systems; Author-Supplied Keyword: SOI; Author-Supplied Keyword: Threshold logic; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.sse.2007.08.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27051530&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Christopher E. Bunker AU - Kyle C. Novak AU - Elena A. Guliants AU - Barbara A. Harruff AU - M. Jaouad Meziani AU - Yi Lin AU - Ya-Ping Sun T1 - Formation of Protein−Metal Oxide Nanostructures by the Sonochemical Method:  Observation of Nanofibers and Nanoneedles. JO - Langmuir JF - Langmuir Y1 - 2007/09/25/ VL - 23 IS - 20 M3 - Article SP - 10342 EP - 10347 SN - 07437463 AB - The sonochemical reaction of iron pentacarbonyl is explored in water and in water with the protein BSA (bovine serum albumen). In water, the reaction is found to produce spherical nanoparticles of magnetite (Fe3O4) with a particle size distribution of <10 to ∼60 nm. In water with BSA, the reaction produces either nanofibers or nanoneedles, depending on the concentration of BSA. The nanofiber and nanoneedle samples are found to be mixtures of goethite, lepidocrocite, and hematite (-FeOOH, -FeOOH, and -Fe2O3, respectively). The sonochemical reaction of iron pentacarbonyl with BSA in water is thought to proceed through the thermal decomposition mechanism for iron pentacarbonyl with BSA acting as a templating agent. [ABSTRACT FROM AUTHOR] AB - Copyright of Langmuir is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IRON KW - SERUM albumin KW - CATTLE KW - NANOPARTICLES N1 - Accession Number: 27038989; Christopher E. Bunker 1 Kyle C. Novak 1 Elena A. Guliants 1 Barbara A. Harruff 1 M. Jaouad Meziani 1 Yi Lin 1 Ya-Ping Sun 1; Affiliation: 1: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, Ohio45433-7103, University of Dayton Research Institute, Nonmetallic Materials Division, Dayton, Ohio45469, and Department of Chemistry, Howard L. Hunter Chemistry Laboratory, Clemson University,Clemson, South Carolina 29634-0973; Source Info: Sep2007, Vol. 23 Issue 20, p10342; Subject Term: IRON; Subject Term: SERUM albumin; Subject Term: CATTLE; Subject Term: NANOPARTICLES; NAICS/Industry Codes: 112112 Cattle Feedlots; NAICS/Industry Codes: 112130 Dual-Purpose Cattle Ranching and Farming; NAICS/Industry Codes: 424520 Livestock Merchant Wholesalers; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27038989&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fan, Li AU - Hessenius, Chris AU - Fallahi, Mahmoud AU - Hader, Jörg AU - Li, Hongbo AU - Moloney, Jerome V. AU - Stolz, Wolfgang AU - Koch, Stephan W. AU - Murray, James T. AU - Bedford, Robert T1 - Highly strained InGaAs/GaAs multiwatt vertical-external-cavity surface-emitting laser emitting around 1170 nm. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/09/24/ VL - 91 IS - 13 M3 - Article SP - 131114 PB - American Institute of Physics SN - 00036951 AB - We develop and demonstrate a multiwatt highly strained InGaAs/GaAs vertical-external-cavity surface-emitting laser with a free lasing wavelength of around 1170 nm. This laser can be tuned from ∼1147 to∼1197 nm. This low-cost compact wavelength agile laser can potentially provide high-power coherent light in a wide yellow-orange band by the intracavity frequency doubling. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - INDIUM compounds KW - QUANTUM wells KW - WAVELENGTHS KW - SEMICONDUCTORS -- Research N1 - Accession Number: 26977198; Fan, Li 1 Hessenius, Chris 1 Fallahi, Mahmoud 1 Hader, Jörg 2 Li, Hongbo 2 Moloney, Jerome V. 2 Stolz, Wolfgang 3 Koch, Stephan W. 3 Murray, James T. 4 Bedford, Robert 5; Affiliation: 1: College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA 2: Arizona Center for Mathematical Science and College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA 3: Department of Physics and Material Sciences Center, Philipps Universität Marburg, Renthof 5, 35032 Marburg, Germany 4: Areté Associates, 1225 Ken Pratt Blvd., Longmont, Colorado 80501, USA 5: Sensors Directorate, Air Force Research Laboratory, 2241 Avionics Cir. Wright-Patterson AFB, Ohio 45433, USA; Source Info: 9/24/2007, Vol. 91 Issue 13, p131114; Subject Term: LASERS; Subject Term: INDIUM compounds; Subject Term: QUANTUM wells; Subject Term: WAVELENGTHS; Subject Term: SEMICONDUCTORS -- Research; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.2790838 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26977198&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maaß, R. AU - Van Petegem, S. AU - Grolimund, D. AU - Van Swygenhoven, H. AU - Uchic, M. D. T1 - A strong micropillar containing a low angle grain boundary. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/09/24/ VL - 91 IS - 13 M3 - Article SP - 131909 PB - American Institute of Physics SN - 00036951 AB - In situ white beam Laue diffraction experiments on focused ion beam machined single crystal 10 μm Ni pillars are performed to explore the relation between the initial and evolving microstructures and the subsequent flow response. The pillar has a flow stress that is at least in the upper bound of the scatter of the flow stresses obtained for similar Ni pillars. Detailed analysis of the Laue pattern suggests that the strength is in part due to the low angle grain boundary acting as a dislocation barrier. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL growth KW - CRYSTAL grain boundaries KW - DISLOCATIONS in crystals KW - MICROMECHANICS KW - ION bombardment N1 - Accession Number: 26977182; Maaß, R. 1 Van Petegem, S. 1 Grolimund, D. 1 Van Swygenhoven, H. 1 Uchic, M. D. 2; Affiliation: 1: ASQ/NUM Materials Science and Simulations, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland 2: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433–7734, USA; Source Info: 9/24/2007, Vol. 91 Issue 13, p131909; Subject Term: CRYSTAL growth; Subject Term: CRYSTAL grain boundaries; Subject Term: DISLOCATIONS in crystals; Subject Term: MICROMECHANICS; Subject Term: ION bombardment; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.2784938 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26977182&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varanasi, C. V. AU - Burke, J. AU - Brunke, L. AU - Wang, H. AU - Sumption, M. AU - Barnes, P. N. T1 - Enhancement and angular dependence of transport critical current density in pulsed laser deposited YBa2Cu3O7-x+BaSnO3 films in applied magnetic fields. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/09/15/ VL - 102 IS - 6 M3 - Article SP - 063909 PB - American Institute of Physics SN - 00218979 AB - YBa2Cu3O7-x (YBCO) films with nanoparticles of BaSnO3 (BSO) were processed using pulsed laser ablation of a special target made with dual phase sectors of YBCO and BSO. Transport critical current density (Jct) of these YBCO+BSO films in applied magnetic fields and angular dependence of Jct on the applied field orientation was measured. It was observed that in the YBCO+BSO films, the Jct (H∥c orientation) increased considerably as compared to regular YBCO films and was 1.3 times higher than Jct in H∥ab orientation. Cross-sectional transmission electron microscopy images on YBCO+BSO films showed the presence of high density (3.5×1011 cm-2) of nanoparticles (∼10 nm size) and nanocolumns that extended throughout the thickness of the films with high density of dislocations and stacking faults (1000 μm-2). The observed results of enhancements in Jct in H∥c and Jct in H∥ab orientations were discussed in the light of the observed microstructural details. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - LASER ablation KW - CRITICAL currents KW - MAGNETIC fields KW - PARTICLES (Nuclear physics) N1 - Accession Number: 26888138; Varanasi, C. V. 1 Burke, J. 1 Brunke, L. 1 Wang, H. 2 Sumption, M. 3 Barnes, P. N. 4; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469, USA 2: Texas A&M University, College Station, Texas 77843, USA 3: The Ohio State University, Columbus, Ohio 43210, USA 4: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA; Source Info: Sep2007, Vol. 102 Issue 6, p063909; Subject Term: NANOPARTICLES; Subject Term: LASER ablation; Subject Term: CRITICAL currents; Subject Term: MAGNETIC fields; Subject Term: PARTICLES (Nuclear physics); Number of Pages: 5p; Illustrations: 3 Black and White Photographs, 5 Graphs; Document Type: Article L3 - 10.1063/1.2783783 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26888138&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bandyopadhyay, A. AU - Ray, A. K. AU - Sharma, A. K. T1 - Use of DNA in the fabrication of solid state dye sensitized solar cells. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/09/15/ VL - 102 IS - 6 M3 - Article SP - 064508 PB - American Institute of Physics SN - 00218979 AB - Double stranded calf-thymus deoxyribonucleic acid (DNA) and elementary adenine DNA base were employed as solid state electrolytes in a dye sensitized nanocrystalline titanium dioxide (TiO2) solar cell, where the sensitizing dye was Rose Bengal. Depending upon the type of the DNA used, the short circuit currents in the cells increases between 200% and 400%. The stability of adenine based devices was found to be higher than those made of calf-thymus DNAs. Thus self-refueling of solid-state dye-sensitized solar cells using DNA has been demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEOXYRIBONUCLEASES KW - ADENINE nucleotides KW - SOLID state electronics KW - ELECTROLYTES KW - DNA KW - NANOCRYSTALS KW - TITANIUM dioxide KW - SOLAR cells N1 - Accession Number: 26888171; Bandyopadhyay, A. 1 Ray, A. K. 2 Sharma, A. K. 3; Affiliation: 1: Department of Solid State Physics, Indian Association for the Cultivation of Science, Kolkata 700032, India 2: Nanotechnology Research Laboratories, Department of Materials, Queen Mary, University of London, London E1 4NS, United Kingdom 3: Space Vehicles Directorate, Air Force Research Laboratory, 3550 Aberdeen Avenue, SE Kirtland AFB, New Mexico 87117, USA; Source Info: Sep2007, Vol. 102 Issue 6, p064508; Subject Term: DEOXYRIBONUCLEASES; Subject Term: ADENINE nucleotides; Subject Term: SOLID state electronics; Subject Term: ELECTROLYTES; Subject Term: DNA; Subject Term: NANOCRYSTALS; Subject Term: TITANIUM dioxide; Subject Term: SOLAR cells; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 5p; Illustrations: 4 Color Photographs, 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.2781472 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26888171&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Akdim, Brahim AU - Kar, Tapas AU - Duan, Xiaofeng AU - Pachter, Ruth T1 - Density functional theory calculations of ozone adsorption on sidewall single-wall carbon nanotubes with Stone-Wales defects JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2007/09/13/ VL - 445 IS - 4-6 M3 - Article SP - 281 EP - 287 SN - 00092614 AB - Abstract: In this study, we employed density functional theory to investigate the adsorption mechanisms of O3 on the sidewalls of C(5,5), C(8,8), and C(10,0) single-wall carbon nanotubes (SWCNTs), also having Stone-Wales (SW) defects with different orientations. An understanding of the adsorption of O3 on SWCNT sidewalls with SW defects was obtained by examining local structural changes, described by the pyramidalization angle, while in investigating the electronic structure of ozonized SWCNT, the results were found to be consistent with experimental observations in some cases. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DENSITY functionals KW - CARBON nanotubes KW - CARBON KW - SURFACE chemistry N1 - Accession Number: 26489735; Akdim, Brahim 1; Email Address: Brahim.Akdim@wpafb.af.mil Kar, Tapas 2 Duan, Xiaofeng 1 Pachter, Ruth 1; Email Address: Ruth.Pachter@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7702, United States 2: Department of Chemistry and Biochemistry, Utah State University, Logan, UT 84322-0300, United States; Source Info: Sep2007, Vol. 445 Issue 4-6, p281; Subject Term: DENSITY functionals; Subject Term: CARBON nanotubes; Subject Term: CARBON; Subject Term: SURFACE chemistry; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.cplett.2007.08.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26489735&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhdanov, B.V. AU - Knize, R. J. T1 - Hydrocarbon-free potassium laser. JO - Electronics Letters JF - Electronics Letters Y1 - 2007/09/13/ VL - 43 IS - 19 M3 - Article SP - 1024 EP - 1025 PB - Institution of Engineering & Technology SN - 00135194 AB - A hydrocarbon-free alkali laser operating on a mixture of potassium vapour and helium buffer gas has been demonstrated. Hydrocarbon-free alkali lasers can operate at higher temperatures without risk of cell contamination caused by chemical reactions between the alkali atoms and the hydrocarbon buffer gas. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROCARBONS KW - POTASSIUM vapor KW - LASERS KW - HELIUM KW - TEMPERATURE KW - CHEMICAL reactions KW - NONLINEAR optics N1 - Accession Number: 26554998; Zhdanov, B.V. 1; Email Address: boris.zhdanov@usafa.edu Knize, R. J. 1; Affiliation: 1: US Air Force Academy, Department of Physics, USA; Source Info: 9/13/2007, Vol. 43 Issue 19, p1024; Subject Term: HYDROCARBONS; Subject Term: POTASSIUM vapor; Subject Term: LASERS; Subject Term: HELIUM; Subject Term: TEMPERATURE; Subject Term: CHEMICAL reactions; Subject Term: NONLINEAR optics; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; Number of Pages: 2p; Illustrations: 1 Black and White Photograph, 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1049/el:20071587 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26554998&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jeffery T. Stricker AU - Anna D. Gudmundsdóttir AU - Adam P. Smith AU - Barney E. Taylor AU - Michael F. Durstock T1 - Bistability in Doped Organic Thin Film Transistors. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2007/09/06/ VL - 111 IS - 35 M3 - Article SP - 10397 EP - 10401 SN - 15206106 AB - Organic thin film transitors (TFTs) with the conducting polymer poly(3,4-ethylenedioxythiophene):poly(styrene sulfonic acid), PEDOT:PSS, as the active layer and cross-linked, layer-by-layer assembled poly(allylamine hydrochloride)/poly(acrylic acid) (PAH/PAA) multilayers as the gate dielectric layer were investigated. A combination of spectroscopic data and device performance characteristics was used to study the behavior of these TFT devices under a variety of controlled environmental test conditions. It was shown that depletion and recovery of the device can be induced to occur by a means that is consistent with the electrochemical oxidation and reduction of water contained in the film. In addition to acting as a reactant, moisture also acts as a plasticizer to control the mobility of other species contained in the film and thereby permits bistable operation of these devices. Raman spectroscopy was used to show that the observed device switching behavior is due to a change in the PEDOT doping level. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANIC thin films KW - TRANSISTORS KW - OXIDATION-reduction reaction KW - RAMAN spectroscopy N1 - Accession Number: 26587622; Jeffery T. Stricker 1 Anna D. Gudmundsdóttir 1 Adam P. Smith 1 Barney E. Taylor 1 Michael F. Durstock 1; Affiliation: 1: Department of Chemistry, University of Cincinnati, Cincinnati, Ohio, Air Force Research Laboratory,Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio, UES, Inc.,Beavercreek, Ohio, and University of Dayton Research Institute, Dayton, Ohio; Source Info: Sep2007, Vol. 111 Issue 35, p10397; Subject Term: ORGANIC thin films; Subject Term: TRANSISTORS; Subject Term: OXIDATION-reduction reaction; Subject Term: RAMAN spectroscopy; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26587622&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shterengas, L. AU - Kaspi, R. AU - Ongstad, A. P. AU - Suchalkin, S. AU - Belenky, G. T1 - Carrier capture in InGaAsSb/InAs/InGaSb type-II laser heterostructures. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/09/03/ VL - 91 IS - 10 M3 - Article SP - 101106 PB - American Institute of Physics SN - 00036951 AB - Experimental studies of the electron and hole concentration dynamics in the barrier of GaSb-based type-II quantum-well (QW) heterostructures were performed. Capture of electrons and holes was studied separately in specially designed and grown laser heterostructures with QWs only for electrons or only for holes. The difference between electron and hole relaxation rates is explained by corresponding QW carrier confinement energies. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLES (Nuclear physics) KW - ELECTRONS KW - CATHODE rays KW - SUPERLATTICES KW - HETEROSTRUCTURES N1 - Accession Number: 26644979; Shterengas, L. 1 Kaspi, R. 2 Ongstad, A. P. 2 Suchalkin, S. 1 Belenky, G. 1; Affiliation: 1: State University of New York at Stony Brook, Stony Brook, New York 11794 2: Air Force Research Laboratory, Directed Energy Directorate, Advanced Tactical Lasers Systems Branch, AFRL/DELS, Kirtland AFB, Albuquerque, New Mexico 87117; Source Info: 9/3/2007, Vol. 91 Issue 10, p101106; Subject Term: PARTICLES (Nuclear physics); Subject Term: ELECTRONS; Subject Term: CATHODE rays; Subject Term: SUPERLATTICES; Subject Term: HETEROSTRUCTURES; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.2771037 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26644979&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nguyen, Binh-Minh AU - Hoffman, Darin AU - Delaunay, Pierre-Yves AU - Razeghi, Manijeh AU - Nathan, Vaidya T1 - Polarity inversion of type II InAs/GaSb superlattice photodiodes. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/09/03/ VL - 91 IS - 10 M3 - Article SP - 103503 PB - American Institute of Physics SN - 00036951 AB - The authors demonstrated the realization of p-on-n type II InAs/GaSb superlattice photodiodes. Growth condition for high quality InAsSb layer lattice matched to GaSb was established for the use of an effective n-contact layer. By studying the effect of various GaSb capping layer thicknesses on the optical and electrical performances, an optimized thickness of 160 nm was determined. In comparison to as grown n-on-p superlattice photodiodes, this inverted design of p on n has shown similar quality. Finally, by analyzing Fabry-Perot interference fringes in the front side illuminated spectral measurement, the refractive index of the superlattice was determined to be approximately 3.8. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS research KW - PHOTODIODES KW - INDIUM arsenide KW - GALLIUM compounds KW - SUPERLATTICES KW - FABRY-Perot interferometers N1 - Accession Number: 26645000; Nguyen, Binh-Minh 1 Hoffman, Darin 1 Delaunay, Pierre-Yves 1 Razeghi, Manijeh 1 Nathan, Vaidya 2; Affiliation: 1: Center for Quantum Devices, Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, Illinois 60208 2: Air Force Research Laboratory, AFRL/VSSS, Kirtland AFB, New Mexico 87117; Source Info: 9/3/2007, Vol. 91 Issue 10, p103503; Subject Term: PHYSICS research; Subject Term: PHOTODIODES; Subject Term: INDIUM arsenide; Subject Term: GALLIUM compounds; Subject Term: SUPERLATTICES; Subject Term: FABRY-Perot interferometers; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.2779855 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26645000&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sen, Indrani AU - Tamirisakandala, S. AU - Miracle, D.B. AU - Ramamurty, U. T1 - Microstructural effects on the mechanical behavior of B-modified Ti–6Al–4V alloys JO - Acta Materialia JF - Acta Materialia Y1 - 2007/09// VL - 55 IS - 15 M3 - Article SP - 4983 EP - 4993 SN - 13596454 AB - Abstract: Small additions of B (⩽0.4wt.%) to Ti alloys refine the as-cast microstructure significantly and improve the alloys’ mechanical performance. In this work, tensile, fracture and fatigue properties of the as-cast and hot isostatically pressed Ti–6Al–4V alloy with 0, 0.05, 0.10 and 0.40wt.% B additions have been examined, with particular emphasis on identifying the microstructural length scale (grain size vs. lath size) that controls the mechanical properties of these alloys. Microstructural observations indicate an order of magnitude reduction in the prior β grain size, d, as well as a significant reduction in the α lath size, λ, with B additions. It was observed that d and λ are correlated. With the refinement in the microstructure, the yield and ultimate tensile strengths, σ y and σ u respectively, increase whereas the fracture toughness, K IC, decreases. Application of the Rice–Knott–Ritchie model for quasi-brittle cleavage fracture indicates that the reduction in K IC with increasing B content is due primarily to the reduced λ. Fatigue crack growth measurements show a gradual reduction in the threshold for fatigue crack propagation with dependence. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - BORON KW - DEFORMATIONS (Mechanics) KW - STRAINS & stresses (Mechanics) KW - MICROSTRUCTURE KW - MICROMECHANICS KW - Fatigue KW - Fracture toughness KW - Mechanical properties KW - Microstructure KW - Titanium alloys N1 - Accession Number: 26151954; Sen, Indrani 1 Tamirisakandala, S. 2 Miracle, D.B. 2 Ramamurty, U. 1; Email Address: ramu@materials.iisc.ernet.in; Affiliation: 1: Department of Materials Engineering, Indian Institute of Science, Bangalore 560 012, India 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Building 655, 2230 Tenth Street, Wright–Patterson AFB, OH 45433, USA; Source Info: Sep2007, Vol. 55 Issue 15, p4983; Subject Term: TITANIUM alloys; Subject Term: BORON; Subject Term: DEFORMATIONS (Mechanics); Subject Term: STRAINS & stresses (Mechanics); Subject Term: MICROSTRUCTURE; Subject Term: MICROMECHANICS; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Fracture toughness; Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Titanium alloys; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.actamat.2007.05.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26151954&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Svalgaard, L. AU - Cliver, E.W. T1 - Long-term geomagnetic indices and their use in inferring solar wind parameters in the past JO - Advances in Space Research JF - Advances in Space Research Y1 - 2007/09// VL - 40 IS - 7 M3 - Article SP - 1112 EP - 1120 SN - 02731177 AB - Abstract: We discuss three new geomagnetic indices [the Inter-Hour Variability (IHV), the Inter-Diurnal Variability (IDV), Svalgaard, L., Cliver, E.W. The IDV index: its derivation and use in inferring long-term variations of the interplanetary magnetic field strength. J. Geophys. Res. 110, A12103. doi:10.1029/2005JA011203, 2005; and the Polar Cap Potential (PCP) index, Le Sager, P., Svalgaard, L. No increase of the interplanetary electric field since 1926. J. Geophys. Res. 109 (A7), A07106. doi:10.1029/2004JA010411, 2004], that are derivable from data available for a century or more. Each of these indices responds directly to either the solar wind magnetic field strength (B) or to different combinations of B and the solar wind speed (V). This over-determined system permits a reconstruction of these parameters for the past ∼150 years. The variation of yearly averages of B can be described as a constant value (4.6nT) plus a component varying with the square root of the sunspot number. Because the latter seems to exhibit a ∼100 year Gleissberg cycle, B does as well. Since 1890, annual averages of V range from a low of ∼300km/s in 1902 to 545km/s in 2003. The IHV-index fords a way to check the calibration of other long-term geomagnetic indices. We find that the ap-index tracks the variation of IHV, back to 1932 but that the aa-index (extended back to 1844) is systematically too low (3–6nT) before 1957, relative to modern values. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COSMIC magnetic fields KW - SOLAR activity KW - SOLAR wind KW - STELLAR winds KW - Geomagnetic index KW - Long-term KW - Solar wind N1 - Accession Number: 26709356; Svalgaard, L. 1; Email Address: leif@leif.org Cliver, E.W. 2; Email Address: Edward.Cliver@hanscom.af.mil; Affiliation: 1: Easy Toolkit, Inc., 6927 Lawler Ridge, Houston, TX 77055, USA 2: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA; Source Info: Sep2007, Vol. 40 Issue 7, p1112; Subject Term: COSMIC magnetic fields; Subject Term: SOLAR activity; Subject Term: SOLAR wind; Subject Term: STELLAR winds; Author-Supplied Keyword: Geomagnetic index; Author-Supplied Keyword: Long-term; Author-Supplied Keyword: Solar wind; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.asr.2007.06.066 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26709356&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucarelli, A. AU - Frey, A. AU - Yang, R. AU - Lüpke, G. AU - Grilli, F. AU - Haugan, T. AU - Levin, G. AU - Barnes, P. T1 - AC current driven dynamic vortex state in YBa2Cu3O7-x. JO - Applied Physics A: Materials Science & Processing JF - Applied Physics A: Materials Science & Processing Y1 - 2007/09// VL - 88 IS - 4 M3 - Article SP - 601 EP - 604 PB - Springer Science & Business Media B.V. SN - 09478396 AB - Time-resolved magneto-optical imaging measurements show that an ac current enables the vortex matter in YBa2Cu3O7-x thin films to reorganize into two coexisting steady states of driven vortex motion with different characteristics: a quasi-static disordered glassy state in the sample interior and a dynamic state of plastic motion near the edges. Finite-element calculations consistent with the critical state model show good agreement with the measured field profiles in the quasi-static state but predict a larger hysteretic behavior in the dynamic state. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics A: Materials Science & Processing is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - MAGNETOOPTICS KW - FINITE element method KW - MAGNETIC fields KW - SUPERCONDUCTORS N1 - Accession Number: 25603513; Lucarelli, A. 1; Email Address: axluca@wm.edu Frey, A. 1 Yang, R. 1 Lüpke, G. 1 Grilli, F. 2 Haugan, T. 3 Levin, G. 3 Barnes, P. 3; Affiliation: 1: Department of Applied Science , The College of William and Mary , Williamsburg 23187-8795 USA 2: Superconductivity Technology Center , Los Alamos National Laboratory , Los Alamos 87545 USA 3: Air Force Research Laboratory , Wright-Patterson AFB 45433-7919 USA; Source Info: Sep2007, Vol. 88 Issue 4, p601; Subject Term: THIN films; Subject Term: MAGNETOOPTICS; Subject Term: FINITE element method; Subject Term: MAGNETIC fields; Subject Term: SUPERCONDUCTORS; Number of Pages: 4p; Illustrations: 1 Color Photograph, 2 Graphs; Document Type: Article L3 - 10.1007/s00339-007-4018-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25603513&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Phillips, Chandler A. AU - Repperger, Daniel W. AU - Kinsler, Rachel AU - Bharwani, Gavind AU - Kender, David T1 - A quantitative model of the human–machine interaction and multi-task performance: A strategy function and the unity model paradigm JO - Computers in Biology & Medicine JF - Computers in Biology & Medicine Y1 - 2007/09// VL - 37 IS - 9 M3 - Article SP - 1259 EP - 1271 SN - 00104825 AB - A human–machine-interaction (HMI) model is developed for the human operator (HO) performing five simultaneous tasks and characterized by a strategy function. Five levels of total machine-initiated baud rate are generated by the multi-attribute task battery (MATB) and five HO baud rates are then recorded. Total baud ratio is defined as the ratio of to . Results indicate that with increasing levels: (1) there is an overall increase in , and (2) there is an overall decrease in . These results are due to a decreasing HMI performance and divergence of the strategy function from a unity model paradigm. [Copyright &y& Elsevier] AB - Copyright of Computers in Biology & Medicine is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL models KW - SIMULATION methods & models KW - COMPUTER simulation KW - PREDICTION models KW - SYSTEM analysis KW - INFORMATION processing KW - COMPUTER multitasking KW - Human operator performance KW - Human–machine interaction KW - Information processing KW - MATB KW - Multiple tasking KW - Strategy N1 - Accession Number: 25750526; Phillips, Chandler A. 1; Email Address: chandler.phillips@wright.edu Repperger, Daniel W. 2 Kinsler, Rachel 1 Bharwani, Gavind 1 Kender, David 1; Affiliation: 1: Department of Biomedical, Industrial and Human Factors Engineering, Wright State University, Dayton, OH 45435, USA 2: Air Force Research Laboratory, AFRL/HECP, Wright-Patterson A.F.B., Dayton, OH 45433, USA; Source Info: Sep2007, Vol. 37 Issue 9, p1259; Subject Term: MATHEMATICAL models; Subject Term: SIMULATION methods & models; Subject Term: COMPUTER simulation; Subject Term: PREDICTION models; Subject Term: SYSTEM analysis; Subject Term: INFORMATION processing; Subject Term: COMPUTER multitasking; Author-Supplied Keyword: Human operator performance; Author-Supplied Keyword: Human–machine interaction; Author-Supplied Keyword: Information processing; Author-Supplied Keyword: MATB; Author-Supplied Keyword: Multiple tasking; Author-Supplied Keyword: Strategy; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.compbiomed.2006.12.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25750526&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gustatson, Steven C. AU - Parker, David R. AU - Martin, Richard K. T1 - Cardinal Interpolation. JO - IEEE Transactions on Pattern Analysis & Machine Intelligence JF - IEEE Transactions on Pattern Analysis & Machine Intelligence Y1 - 2007/09// VL - 29 IS - 9 M3 - Article SP - 1538 EP - 1545 SN - 01628828 AB - A Bayesian probability density for an interpolating function is developed, and its desirable properties and practical potential are demonstrated. This density has an often needed but previously unachieved property, here called cardinal interpolation, which ensures extrapolation to the density of the least-squares linear model. In particular, the mean of the cardinal interpolation density is a smooth function that intersects given (x, y) points and which extrapolates to their least-squares line, and the variance of this density is a smooth function that is zero at the point x values, that increases with distance from the nearest point x value, and that extrapolates to the well-known quadratic variance function for the least-squares line. The new cardinal interpolation density is developed for Gaussian radial basis interpolators using fully Bayesian methods that optimize interpolator smoothness. This optimization determines the basis function widths and yields an interpolating density that is non-Gaussian except for large magnitude x and which is therefore not the outcome of a Gaussian process. Further, new development shows that the salient property of extrapolation to the density of the least-squares linear model can be achieved for more general approximating (not just interpolating) functions. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Pattern Analysis & Machine Intelligence is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BAYESIAN analysis KW - STATISTICAL decision making KW - PROBABILITY theory KW - GAUSSIAN processes KW - REGRESSION analysis KW - MULTIVARIATE analysis KW - IMAGE reconstruction KW - IMAGE stabilization KW - IMAGE compression KW - Bayesian statistics KW - interpolation KW - modeling KW - prediction KW - probability KW - regression KW - statistics N1 - Accession Number: 26287401; Gustatson, Steven C. 1; Email Address: steven.gustafson@afit.edu Parker, David R. 2; Email Address: david.parker2@wpafb.af.mil Martin, Richard K. 1; Email Address: richard.martin@afit.edu; Affiliation: 1: Air Force Institute of Technology, 2950 Hobson Way, Wright Patterson AFE, OH 45433-7765 2: Air Force Research Laboratory, 2241 Avionics Circle, Wright Patterson AFB, OH 45433; Source Info: Sep2007, Vol. 29 Issue 9, p1538; Subject Term: BAYESIAN analysis; Subject Term: STATISTICAL decision making; Subject Term: PROBABILITY theory; Subject Term: GAUSSIAN processes; Subject Term: REGRESSION analysis; Subject Term: MULTIVARIATE analysis; Subject Term: IMAGE reconstruction; Subject Term: IMAGE stabilization; Subject Term: IMAGE compression; Author-Supplied Keyword: Bayesian statistics; Author-Supplied Keyword: interpolation; Author-Supplied Keyword: modeling; Author-Supplied Keyword: prediction; Author-Supplied Keyword: probability; Author-Supplied Keyword: regression; Author-Supplied Keyword: statistics; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TPAMI.2007.1170 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26287401&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morrissey, Ryan J. AU - Golden, Patrick J. T1 - Fatigue strength of a single crystal in the gigacycle regime JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2007/09// VL - 29 IS - 9-11 M3 - Article SP - 2079 EP - 2084 SN - 01421123 AB - Abstract: The objective of this work is to investigate the fatigue behavior of a single crystal nickel-based superalloy in the gigacycle regime. Testing from 106 to 109 cycles at 593°C was performed using an ultrasonic fatigue system operating at 20kHz. Multiple tests were performed at stresses near the fatigue limit to determine the variability in fatigue life in this regime. Endurance limit results were compared to similar data generated on conventional servohydraulic test systems to determine if there are any frequency effects. Scanning electron microscopy was then used to determine the initiation sites and the failure mechanisms. Initial results indicate little or no frequency effect on the fatigue strength or failure mechanisms of PWA 1484 at 593°C. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Fatigue KW - CRYSTALS KW - HEAT resistant alloys KW - STRAINS & stresses (Mechanics) KW - High cycle fatigue KW - Superalloy KW - Ultrasonic N1 - Accession Number: 26336295; Morrissey, Ryan J.; Email Address: Ryan.Morrissey@wpafb.af.mil Golden, Patrick J. 1; Affiliation: 1: Air Force Research Laboratory (AFRL/MLLMN), Wright-Patterson AFB, OH, USA; Source Info: Sep2007, Vol. 29 Issue 9-11, p2079; Subject Term: MATERIALS -- Fatigue; Subject Term: CRYSTALS; Subject Term: HEAT resistant alloys; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: High cycle fatigue; Author-Supplied Keyword: Superalloy; Author-Supplied Keyword: Ultrasonic; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.ijfatigue.2007.04.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26336295&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chiu, Y.-H. AU - Gaeta, G. AU - Levandier, D.J. AU - Dressler, R.A. AU - Boatz, J.A. T1 - Vacuum electrospray ionization study of the ionic liquid, [Emim][Im] JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2007/09// VL - 265 IS - 2/3 M3 - Article SP - 146 EP - 158 SN - 13873806 AB - Abstract: An analysis is presented of positive and negative vacuum electrospray currents from the ionic liquid, [Emim][Im], wetted on a sharp tungsten needle. The source is operated in a cone–jet configuration established with a low extraction voltage of approximately ±1kV. Emission current and mass flow are measured as a function of the emitter angle with respect to the instrument axis. Mass spectra of field evaporated ions and mass-resolved energy distributions of emitted charges are recorded as a function of emitter angle. The measurements at both source polarities indicate that the cone–jet emits a mixture of ions and charged droplets. While the charged droplets are emitted with a narrow angular distribution centered on axis, the angular distributions of ions are significantly broader than those of the droplets and centered off axis. Pure ion emission is observed at emission angles larger than ∼15°. The main mass spectral peaks are from X±{[Emim][Im]} n ions (X=Emim or Im for positive and negative polarities, respectively) with n =0, 1, and 2. Quantum chemical calculations of the n =0 and 1 ions and the isolated ion pairs are presented, yielding thermochemical information on the observed ionic species. The present results demonstrate that the cone–jet emits droplets from the tip of the jet, and provide direct evidence that ions are produced in an Iribarne–Thomson field-evaporation mechanism at the transition region between the Taylor cone and jet. Electrochemical modification of the cone–jet emitter properties are observed when maintaining the emitter at a positive polarity for a prolonged (minutes to hours) period. New ions emerge consisting of clusters containing a neutralized Im−. The associated current suppression can be mitigated through polarity alternation at 1Hz. Measurements are also presented with the tungsten needle heated to 373K, thereby reducing the liquid viscosity and increasing the flow rate. The average mass of the droplets is observed to increase with temperature while the mass distributions of the ions are not found to change noticeably. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROSPRAY ionization mass spectrometry KW - MASS spectrometry KW - SPECTRAL energy distribution KW - IONS KW - Electrochemistry KW - Electrospray KW - Ethyl-methyl-imidazolium ion KW - Ionic liquid KW - Taylor cone N1 - Accession Number: 25828373; Chiu, Y.-H. 1; Email Address: Yu-Hui.Chiu@Hanscom.af.mil Gaeta, G. 1 Levandier, D.J. 2 Dressler, R.A. 1 Boatz, J.A. 3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA 01731-3010, USA 2: Institute for Scientific Research, Boston College, Chestnut Hill, MA 02159, USA 3: Air Force Research Laboratory, Propulsion Directorate, Edwards AFB, CA 93524, USA; Source Info: Sep2007, Vol. 265 Issue 2/3, p146; Subject Term: ELECTROSPRAY ionization mass spectrometry; Subject Term: MASS spectrometry; Subject Term: SPECTRAL energy distribution; Subject Term: IONS; Author-Supplied Keyword: Electrochemistry; Author-Supplied Keyword: Electrospray; Author-Supplied Keyword: Ethyl-methyl-imidazolium ion; Author-Supplied Keyword: Ionic liquid; Author-Supplied Keyword: Taylor cone; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.ijms.2007.02.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25828373&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coletta, Damon T1 - Unipolarity, Globalization, and the War on Terror: Why Security Studies Should Refocus on Comparative Defense. JO - International Studies Review JF - International Studies Review Y1 - 2007/09// VL - 9 IS - 3 M3 - Article SP - 385 EP - 406 PB - Oxford University Press / USA SN - 15219488 AB - Changes in the international environment such as the shift toward unipolarity, the rise of globalization, and the expansion of terrorist networks have redefined the sorts of problems confronted by policymakers and military practitioners in the arena of national security. With most of its fundamental concepts and frameworks rooted in the study of international relations (IR), the field of security studies has failed to keep up. Highly educated soldiers and diplomats sent to help rebuild failed or fragmented states are still poorly equipped to identify major obstacles or formulate solutions for accomplishing their missions. The safety of states and societies today depends less exclusively on blocking the military, economic, and ideological initiatives of a foreign power and more on supporting the integrity of members that can participate in an international system regulated by generally agreed-upon rules and conventions. The need to help various types of states under a variety of cultural and economic conditions build legitimate, durable political institutions and functioning societies should push security studies toward a broader examination of comparative politics. Beyond the balance of power and modalities of interstate competition, the new security studies should embrace fundamentals found outside of IR to make more robust intellectual contributions to the examination of comparative defense. [ABSTRACT FROM AUTHOR] AB - Copyright of International Studies Review is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERNATIONAL relations KW - GLOBALIZATION KW - NATIONAL security KW - MILITARY readiness KW - INTERNATIONAL mediation KW - MILITARY policy N1 - Accession Number: 27550529; Coletta, Damon 1; Affiliation: 1: *Department of Political Science, United States Air Force Academy; Source Info: Sep2007, Vol. 9 Issue 3, p385; Subject Term: INTERNATIONAL relations; Subject Term: GLOBALIZATION; Subject Term: NATIONAL security; Subject Term: MILITARY readiness; Subject Term: INTERNATIONAL mediation; Subject Term: MILITARY policy; NAICS/Industry Codes: 911410 Foreign affairs; NAICS/Industry Codes: 928120 International Affairs; NAICS/Industry Codes: 928110 National Security; Number of Pages: 22p; Document Type: Article L3 - 10.1111/j.1468-2486.2007.00696.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27550529&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gebbie, David A. AU - Reeder, Mark F. AU - Tyler, Charles AU - Fonov, Vladimir AU - Crafton, Jim T1 - Lift and Drag Characteristics of a Blended-Wing Body Aircraft. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2007/09//Sep/Oct2007 VL - 44 IS - 5 M3 - Article SP - 1409 EP - 1409 SN - 00218669 AB - The aerodynamic characteristics of a blended-wing body aircraft were assessed in the Air Force Institute of Technology low-speed wind tunnel. The scaled-down model (Rec ~ 105 and M = 0.10 to 0.20) of a strike tanker consisted of a shaped fuselage and slender, sweptback wings. The model evaluation and analysis process included force and moment measurements acquired from a wind-tunnel balance along with complementary pressure sensitive paint measurements and computational fluid dynamics solutions for a few cases. The force and moment coefficient data suggested that the aircraft is affected by both vortex lift and potential flow lift mechanisms. This was manifested in an apparent stall mechanism with a significant dependence on airspeed. One of the most intriguing aspects of the results was the striking difference in the force and moment measurements before and after the paint was applied to the surface. Although the roughness for both models was below the threshold suggested by 2-D boundary layer theory for all data acquired, the application of the paint led to a clear and repeatable effect on the force coefficient data. The lift slope was steeper and the onset of stall, when it occurred, was sudden across the entire wing for sufficiently smooth models. By contrast, the lift slope was reduced and stall was indicated only through a mild change in lift slope for the measurements corresponding to the rougher surface. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MODEL airplanes KW - AIRPLANE wings KW - WIND tunnels KW - AERODYNAMICS KW - FLUID dynamics KW - MECHANICS (Physics) N1 - Accession Number: 27300735; Gebbie, David A. 1 Reeder, Mark F. 1 Tyler, Charles 2,3 Fonov, Vladimir 3,4 Crafton, Jim 3,4; Affiliation: 1: Air Force Institute of Technology, Wright-Patterson AFB, Ohio 45433 2: U. S. Air Force Research Laboratory (AFRL/VAAC), Wright-Patterson AFB, Ohio 45433 3: AIAA Member 4: Innovative Scientific Solutions, Inc., Dayton, Ohio 45440; Source Info: Sep/Oct2007, Vol. 44 Issue 5, p1409; Subject Term: MODEL airplanes; Subject Term: AIRPLANE wings; Subject Term: WIND tunnels; Subject Term: AERODYNAMICS; Subject Term: FLUID dynamics; Subject Term: MECHANICS (Physics); NAICS/Industry Codes: 339930 Doll, Toy, and Game Manufacturing; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.2514/1.22356 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27300735&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shima, Tal AU - Rasmussen, Steven J. AU - Chandler, Phillip T1 - UAV Team Decision and Control Using Efficient Collaborative Estimation. JO - Journal of Dynamic Systems, Measurement, & Control JF - Journal of Dynamic Systems, Measurement, & Control Y1 - 2007/09// VL - 129 IS - 5 M3 - Article SP - 609 EP - 619 SN - 00220434 AB - A novel decision-estimation methodology for a team of agents cooperating under communication imperfections is presented. The scenario of interest is that of a group of uninhabited aerial vehicles (UAVs) cooperatively performing, under communication delays, multiple tasks on multiple ground targets. In the proposed architecture, each UAV in the group runs an identical centralized decision algorithm and multiple information filters in parallel on its own states, its teammates' states, and its own states as viewed by its teammates. Under perfect information, the decision architecture allows implicit coordination. Under imperfect information, the estimation of team members' states enables predicting their cost to prosecute new tasks. Thus, the group performance under communication imperfections can be improved. Two different algorithms are proposed for the estimation process. The first is communication efficient, in which asynchronous information updates are sent to the network by individual members based on the value of the information to the rest of the group. The second is computation efficient utilizing synchronous information updates. Taking into account that the plan and plant of each UAV are known to the group improves the overall estimation process. Utilizing the MULTIUAV2 simulation testbed, a Monte Carlo study is presented. The benefit of using the proposed algorithms is shown with regard to the target prosecution rate and the communication bandwidth required for cooperation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Dynamic Systems, Measurement, & Control is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METHODOLOGY KW - ESTIMATION theory KW - UNINHABITED combat aerial vehicles KW - DELAY lines KW - INDUSTRIAL equipment -- Utilization KW - SYNCHRONOUS data transmission systems KW - DATA transmission systems KW - DIGITAL filters (Mathematics) KW - IMPLICIT learning N1 - Accession Number: 27407931; Shima, Tal 1 Rasmussen, Steven J. 2 Chandler, Phillip 2; Affiliation: 1: Department of Aerospace Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel 2: Control Science Center of Excellence, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433; Source Info: Sep2007, Vol. 129 Issue 5, p609; Subject Term: METHODOLOGY; Subject Term: ESTIMATION theory; Subject Term: UNINHABITED combat aerial vehicles; Subject Term: DELAY lines; Subject Term: INDUSTRIAL equipment -- Utilization; Subject Term: SYNCHRONOUS data transmission systems; Subject Term: DATA transmission systems; Subject Term: DIGITAL filters (Mathematics); Subject Term: IMPLICIT learning; Number of Pages: 11p; Document Type: Article L3 - 10.1115/1.2764504 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27407931&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Muszynski, Michael T1 - White Terror: Cossack Warlords of the Trans-Siberian. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2007/09// VL - 6 IS - 3 M3 - Book Review SP - 253 EP - 254 PB - Routledge SN - 15027570 AB - The article reviews the book "White Terror: Cossack Warlords of the Trans-Siberian," by Jamie Bisher. KW - TERROR KW - NONFICTION KW - BISHER, Jamie KW - WHITE Terror: Cossack Warlords of the Trans-Siberian (Book) N1 - Accession Number: 26946333; Muszynski, Michael 1; Affiliation: 1: Assistant Professor of Russian, United States Air Force Academy; Source Info: Sep2007, Vol. 6 Issue 3, p253; Subject Term: TERROR; Subject Term: NONFICTION; Reviews & Products: WHITE Terror: Cossack Warlords of the Trans-Siberian (Book); People: BISHER, Jamie; Number of Pages: 2p; Document Type: Book Review L3 - 10.1080/15027570701539693 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26946333&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ficarrotta, J. Carl T1 - Double Effect Reasoning: Doing Good and Avoiding Evil. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2007/09// VL - 6 IS - 3 M3 - Book Review SP - 255 EP - 256 PB - Routledge SN - 15027570 AB - The article reviews the book "Double Effect Reasoning: Doing Good and Avoiding Evil," by Thomas A. Cavanaugh. KW - REASONING (Logic) KW - NONFICTION KW - CAVANAUGH, Thomas A. KW - DOUBLE Effect Reasoning: Doing Good & Avoiding Evil (Book) N1 - Accession Number: 26946332; Ficarrotta, J. Carl 1; Affiliation: 1: Department of Philosophy, US Air Force Academy; Source Info: Sep2007, Vol. 6 Issue 3, p255; Subject Term: REASONING (Logic); Subject Term: NONFICTION; Reviews & Products: DOUBLE Effect Reasoning: Doing Good & Avoiding Evil (Book); People: CAVANAUGH, Thomas A.; Number of Pages: 2p; Document Type: Book Review L3 - 10.1080/15027570601183196 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26946332&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - EVANS, D. R. AU - COOK, G. T1 - BRAGG-MATCHED PHOTOREFRACTIVE TWO-BEAM COUPLING IN ORGANIC–INORGANIC HYBRIDS. JO - Journal of Nonlinear Optical Physics & Materials JF - Journal of Nonlinear Optical Physics & Materials Y1 - 2007/09// VL - 16 IS - 3 M3 - Article SP - 271 EP - 280 PB - World Scientific Publishing Company SN - 02188635 AB - This review article presents the concept of photorefractive beam coupling in hybrid photorefractive cells comprising a liquid crystal layer adjacent to inorganic photorefractive windows. The roles of the liquid crystal layer and the photorefractive windows, as well as the overall advantages of this architecture, are explained. The mechanism involved and the required window parameters to break the local alignment symmetry in order to achieve Bragg-matched two-beam coupling in a liquid crystal layer are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nonlinear Optical Physics & Materials is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BEAM optics KW - PHOTOREFRACTIVE materials KW - ELECTROOPTICS -- Materials KW - LIQUID crystals KW - LIGHT sources KW - PHYSICAL sciences KW - beam coupling KW - Hybrid KW - liquid crystals KW - photorefractive N1 - Accession Number: 27203727; EVANS, D. R. 1; Email Address: dean.evans@wpafb.af.mil COOK, G. 1,2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: Universal Technology Corporation, 1270 N. Fairfield Road, Dayton, Ohio 45432, USA; Source Info: Sep2007, Vol. 16 Issue 3, p271; Subject Term: BEAM optics; Subject Term: PHOTOREFRACTIVE materials; Subject Term: ELECTROOPTICS -- Materials; Subject Term: LIQUID crystals; Subject Term: LIGHT sources; Subject Term: PHYSICAL sciences; Author-Supplied Keyword: beam coupling; Author-Supplied Keyword: Hybrid; Author-Supplied Keyword: liquid crystals; Author-Supplied Keyword: photorefractive; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 10p; Illustrations: 1 Color Photograph, 4 Diagrams, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27203727&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lane, Steven A. AU - Kennedy, Scott AU - Richard, Robert T1 - Noise Transmission Studies of an Advanced Grid-Stiffened Composite Fairing. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2007/09//Sep/Oct2007 VL - 44 IS - 5 M3 - Article SP - 1131 EP - 1139 SN - 00224650 AB - Interior fairing noise is an important consideration for payload launch survivability and has been studied extensively since the beginning of the space program. This work presents acoustic transmission studies conducted by the Air Force Research Laboratory, Space Vehicles Directorate, on a composite, grid-stiffened, Minotaur payload fairing. These tests were performed in an acoustics laboratory and examined the effects of acoustic flanking paths, the thermal protection system, and melamine-type acoustic blanket treatments on fairing noise. The data showed that acoustic flanking paths significantly increase noise transmission, especially at low frequency. The bare fairing with thermal protection system provided approximately 14 dB of noise reduction over the 5000 Hz bandwidth relative to external levels. Acoustic blanket performance was measured as a function of bandwidth, surface area coverage, and mass. It was observed that small amounts of treatment (2 kg) significantly increased noise reduction (3.6 dB), even at low frequency. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles KW - SPACE trajectories KW - TESTING KW - FIRE protection engineering KW - SPACE flight KW - AERODYNAMICS N1 - Accession Number: 27400158; Lane, Steven A. 1,2; Email Address: steven.lane@kirtland.af.mil Kennedy, Scott 3,4 Richard, Robert 4,5; Affiliation: 1: U.S. Air Force Research Laboratory, Kirtland AFB, New Mexico 87117 2: Senior Member, AIAA 3: CSA Engineering, Albuquerque, New Mexico 87123 4: Member, AIAA 5: Boeing-SVS, Albuquerque, New Mexico 87109; Source Info: Sep/Oct2007, Vol. 44 Issue 5, p1131; Subject Term: SPACE vehicles; Subject Term: SPACE trajectories; Subject Term: TESTING; Subject Term: FIRE protection engineering; Subject Term: SPACE flight; Subject Term: AERODYNAMICS; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 922160 Fire Protection; Number of Pages: 9p; Illustrations: 8 Diagrams, 4 Charts, 14 Graphs; Document Type: Article L3 - 10.2514/1.28590 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27400158&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Iyer, Nandini AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Effects of periodic masker interruption on the intelligibility of interrupted speech. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2007/09// VL - 122 IS - 3 M3 - Article SP - 1693 EP - 1701 SN - 00014966 AB - When listeners hear a target signal in the presence of competing sounds, they are quite good at extracting information at instances when the local signal-to-noise ratio of the target is most favorable. Previous research suggests that listeners can easily understand a periodically interrupted target when it is interleaved with noise. It is not clear if this ability extends to the case where an interrupted target is alternated with a speech masker rather than noise. This study examined speech intelligibility in the presence of noise or speech maskers, which were either continuous or interrupted at one of six rates between 4 and 128 Hz. Results indicated that with noise maskers, listeners performed significantly better with interrupted, rather than continuous maskers. With speech maskers, however, performance was better in continuous, rather than interrupted masker conditions. Presumably the listeners used continuity as a cue to distinguish the continuous masker from the interrupted target. Intelligibility in the interrupted masker condition was improved by introducing a pitch difference between the target and speech masker. These results highlight the role that target-masker differences in continuity and pitch play in the segregation of competing speech signals. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LISTENING KW - SIGNAL-to-noise ratio KW - HEARING KW - NOISE KW - SPEECH KW - INTONATION (Phonetics) N1 - Accession Number: 26977312; Iyer, Nandini 1; Email Address: nandini.iyer@wpafb.af.mil Brungart, Douglas S. 1 Simpson, Brian D. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio, USA; Source Info: Sep2007, Vol. 122 Issue 3, p1693; Subject Term: LISTENING; Subject Term: SIGNAL-to-noise ratio; Subject Term: HEARING; Subject Term: NOISE; Subject Term: SPEECH; Subject Term: INTONATION (Phonetics); Number of Pages: 9p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1121/1.2756177 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26977312&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Effect of target-masker similarity on across-ear interference in a dichotic cocktail-party listening task. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2007/09// VL - 122 IS - 3 M3 - Article SP - 1724 EP - 1734 SN - 00014966 AB - Similarity between the target and masking voices is known to have a strong influence on performance in monaural and binaural selective attention tasks, but little is known about the role it might play in dichotic listening tasks with a target signal and one masking voice in the one ear and a second independent masking voice in the opposite ear. This experiment examined performance in a dichotic listening task with a target talker in one ear and same-talker, same-sex, or different-sex maskers in both the target and the unattended ears. The results indicate that listeners were most susceptible to across-ear interference with a different-sex within-ear masker and least susceptible with a same-talker within-ear masker, suggesting that the amount of across-ear interference cannot be predicted from the difficulty of selectively attending to the within-ear masking voice. The results also show that the amount of across-ear interference consistently increases when the across-ear masking voice is more similar to the target speech than the within-ear masking voice is, but that no corresponding decline in across-ear interference occurs when the across-ear voice is less similar to the target than the within-ear voice. These results are consistent with an “integrated strategy” model of speech perception where the listener chooses a segregation strategy based on the characteristics of the masker present in the target ear and the amount of across-ear interference is determined by the extent to which this strategy can also effectively be used to suppress the masker in the unattended ear. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VOICE KW - DICHOTIC listening tests KW - AUDIOMETRY KW - SPEECH perception KW - EAR KW - HEARING N1 - Accession Number: 26977309; Brungart, Douglas S. 1; Email Address: douglas.brungart@wpafb.af.mil Simpson, Brian D. 1; Affiliation: 1: Air Force Research Laboratory, WPAFB, Ohio 45433; Source Info: Sep2007, Vol. 122 Issue 3, p1724; Subject Term: VOICE; Subject Term: DICHOTIC listening tests; Subject Term: AUDIOMETRY; Subject Term: SPEECH perception; Subject Term: EAR; Subject Term: HEARING; Number of Pages: 11p; Illustrations: 1 Diagram, 4 Charts, 5 Graphs; Document Type: Article L3 - 10.1121/1.2756797 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26977309&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mastroianni, George R. T1 - The Trials of Abu Ghraib: An Expert Witness Account of Shame and Honor. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College Y1 - 2007///Fall2007 VL - 37 IS - 3 M3 - Book Review SP - 131 EP - 133 SN - 00311723 AB - The article reviews the book " The Trials of Abu Ghraib: An Expert Witness Account of Shame and Honor," written by S. G. Mestrovic. KW - NONFICTION KW - ABU Ghraib Prison KW - MESTROVIC, S. G. KW - TRIALS of Abu Ghraib: An Expert Witness Account of Shame & Honor, The (Book) N1 - Accession Number: 27015144; Mastroianni, George R. 1; Affiliation: 1: Professor of Psychology, US Air Force Academy; Source Info: Fall2007, Vol. 37 Issue 3, p131; Subject Term: NONFICTION; Company/Entity: ABU Ghraib Prison; Reviews & Products: TRIALS of Abu Ghraib: An Expert Witness Account of Shame & Honor, The (Book); People: MESTROVIC, S. G.; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27015144&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kolenc, Antony Barone T1 - "MR. SCALIA'S NEIGHBORHOOD": A HOME FOR MINORITY RELIGIONS? JO - St. John's Law Review JF - St. John's Law Review Y1 - 2007///Fall2007 VL - 81 IS - 4 M3 - Article SP - 819 EP - 880 PB - St. John's Law Review SN - 00362905 AB - The article features Justice Antonin Scalia, who was described as the most outspoken and convincing voice of the new conservative majority on the United States Supreme Court. Scalia's power of influence has increased, with some predicting that Scalia may well command a majority of the court in the future. Justice Scalia has been a vocal critic for over two decades in the Court's First Amendment Establishment Clause jurisprudence. There, Scalia has been arguing for the death of the Lemon test and a greater tolerance for religion in the public arena. KW - JUDGES -- United States KW - CONSERVATIVES KW - JURISPRUDENCE KW - UNITED States KW - UNITED States. Supreme Court KW - SCALIA, Antonin, 1936-2016 N1 - Accession Number: 27200131; Kolenc, Antony Barone 1,2; Affiliation: 1: University of Florida College of Law 2: Attorney, United States Air Force Judge Advocate General's Corps; Source Info: Fall2007, Vol. 81 Issue 4, p819; Subject Term: JUDGES -- United States; Subject Term: CONSERVATIVES; Subject Term: JURISPRUDENCE; Subject Term: UNITED States; Company/Entity: UNITED States. Supreme Court; People: SCALIA, Antonin, 1936-2016; Number of Pages: 62p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27200131&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bostock, Deborah J. AU - Daley, James G. T1 - Lifetime and Current Sexual Assault and Harassment Victimization Rates of Active-Duty United States Air Force Women. JO - Violence Against Women JF - Violence Against Women Y1 - 2007/09// VL - 13 IS - 9 M3 - Article SP - 927 EP - 944 SN - 10778012 AB - From a stratified random sample, 2,018 active-duty United States Air Force women completed a telephone survey dealing with sexual assault and harassment. The lifetime prevalence of rape among Air Force women (28%) was more than twice as high as the prevalence in a national sample (13%). Nearly half of the military sample had been the victims of rape, molestation, or attempted sexual assault. The majority of both initial rapes (75%) and most recent rapes (56%) involved assault by civilians when the victims were civilians. Family members perpetrated 29% of initial rapes and 33% of most recent rapes. Regarding military status of the perpetrator, 14% of first-time victims were raped by a military member, 26.7% of multiple-time victims were raped by a military member, 31.8% of military women were sexually harassed by a military supervisor or boss, and 26.7% of military women were sexually harassed by a military coworker. [ABSTRACT FROM AUTHOR] AB - Copyright of Violence Against Women is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WOMEN & the military KW - WOMEN military personnel KW - RAPE KW - SEXUAL harassment KW - MILITARY crimes KW - WOMEN -- Crimes against KW - UNITED States KW - military women KW - sexual assault KW - sexual harassment KW - U.S. Air Force KW - UNITED States. Air Force N1 - Accession Number: 26362866; Bostock, Deborah J. 1 Daley, James G. 2; Affiliation: 1: United States Air Force 2: Indiana University School of Social Work; Source Info: Sep2007, Vol. 13 Issue 9, p927; Subject Term: WOMEN & the military; Subject Term: WOMEN military personnel; Subject Term: RAPE; Subject Term: SEXUAL harassment; Subject Term: MILITARY crimes; Subject Term: WOMEN -- Crimes against; Subject Term: UNITED States; Author-Supplied Keyword: military women; Author-Supplied Keyword: sexual assault; Author-Supplied Keyword: sexual harassment; Author-Supplied Keyword: U.S. Air Force; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 18p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26362866&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patrick Sullivan AU - Brenton Stone AU - Zaher Hashisho AU - Mark Rood T1 - Water adsorption with hysteresis effect onto microporous activated carbon fabrics. JO - Adsorption JF - Adsorption Y1 - 2007/08/29/ VL - 13 IS - 3/4 M3 - Article SP - 173 EP - 189 SN - 09295607 AB - Abstract   Understanding the adsorption of water vapor onto activated carbons is important for designing processes to remove dilute contaminants from humid gas streams, such as providing protection against chemical warfare agents (CWAs), or against toxic industrial compounds (TICs) used in a terrorist chemical attack. Water vapor isotherms for Calgon BPL granular activated carbon (GAC), military ASZM-TEDA GAC, electrospun activated carbon nanofibers (ACnF), Calgon Zorflex™ activated carbon cloth, and Novoloid-based activated carbon fiber cloth (ACFC) are presented. Of particular interest are the ACFC isotherms, which exhibit an unusually high degree of hydrophobicity. The ACFC isotherms also show a correlation between water vapor adsorption hysteresis and the level of activation. Water vapor isotherm models from the literature are compared. [ABSTRACT FROM AUTHOR] AB - Copyright of Adsorption is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEPARATION (Technology) KW - ADSORPTION KW - ACTIVATED carbon KW - AIR warfare N1 - Accession Number: 27686348; Patrick Sullivan 1 Brenton Stone 1 Zaher Hashisho 2 Mark Rood 2; Affiliation: 1: Air Force Research Laboratory Airbase Technologies Division 139 Barnes Dr Ste 2 Tyndall AFB FL 32403 USA 2: University of Illinois Department of Civil & Environmental Engineering Urbana IL 61801 USA; Source Info: Aug2007, Vol. 13 Issue 3/4, p173; Subject Term: SEPARATION (Technology); Subject Term: ADSORPTION; Subject Term: ACTIVATED carbon; Subject Term: AIR warfare; NAICS/Industry Codes: 325999 All other miscellaneous chemical product manufacturing; NAICS/Industry Codes: 325998 All Other Miscellaneous Chemical Product and Preparation Manufacturing; Number of Pages: 17p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27686348&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Menka Petkovska AU - Danijela Antov-Bozalo AU - Ana Markovic AU - Patrick Sullivan T1 - Multiphysics modeling of electric-swing adsorption system with in-vessel condensation. JO - Adsorption JF - Adsorption Y1 - 2007/08/29/ VL - 13 IS - 3/4 M3 - Article SP - 357 EP - 372 SN - 09295607 AB - Abstract   Mathematical modeling of an Electric-Swing Adsorption (ESA) system (adsorption cycle with electrothermal desorption step, performed by direct heating of the adsorbent particles by passing electric current through them), with annular, radial-flow, cartridge-type fixed-bed and in-vessel condensation, is performed by using Comsol Multiphysics™ software. Three multiphysics models are built, in order to describe three stages of a compete ESA cycle: adsorption, electrothermal desorption before the start of condensation and electrothermal desorption with in-vessel condensation. In order to describe the complete ESA cycle the models for the three stages are integrated, by using a combination of Comsol Multiphysics™ and Matlab™. The models were successfully used for simulation of separate stages of the process and of the complete ESA cycles, as well as for investigation of the influences of the main operational parameters on the process performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Adsorption is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADSORPTION KW - SEPARATION (Technology) KW - CONDENSATION KW - ANALYTICAL chemistry N1 - Accession Number: 27686341; Menka Petkovska 1 Danijela Antov-Bozalo 1 Ana Markovic 1 Patrick Sullivan 2; Affiliation: 1: University of Belgrade Department of Chemical Engineering, Faculty of Technology and Metallurgy Belgrade Serbia 2: Air Force Research Laboratory Tyndall AFB FL USA; Source Info: Aug2007, Vol. 13 Issue 3/4, p357; Subject Term: ADSORPTION; Subject Term: SEPARATION (Technology); Subject Term: CONDENSATION; Subject Term: ANALYTICAL chemistry; Number of Pages: 16p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27686341&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - David H. Wang AU - Michael J. Arlen AU - Jong-Beom Baek AU - Richard A.Vaia AU - Loon-Seng Tan T1 - Nanocomposites Derived from a Low-Color Aromatic Polyimide (CP2) and Amine-Functionalized Vapor-Grown Carbon Nanofibers:  In Situ Polymerization and Characterization. JO - Macromolecules JF - Macromolecules Y1 - 2007/08/21/ VL - 40 IS - 17 M3 - Article SP - 6100 EP - 6111 SN - 00249297 AB - Vapor-grown carbon nanofibers (VGCNF) were functionalized with amine-containing pendants via a Friedel−Crafts acylation reaction with 4-(3-aminophenoxy)benzoic acid. The resulting H2N−VGCNF with relatively high degree of functionalization was in attendance during the synthesis of a polyimide (previously designated as CP2) from 2,2-bis(phthalic anhydride)-1,1,1,3,3,3-hexafluoroisopropane (6FDA) and 1,3-bis(3-aminophenoxy)benzene (APB) in N,N-dimethylacetamide (DMAc). Thus, a series of CP2-based nanocomposite films, which contained 0.18−9.19 wt % of H2N−VGCNF (corresponding to 0.10−5.0 wt % of basic VGCNF) were obtained using the conventional poly(amic acid) precursor method. For comparison purposes, the pristine VGCNF (0.10−5.0 wt %) was also used in the in situ polymerization of 6FDA and ABP. These two series of nanocomposite films were cast from the respective poly(amic acid)/VGCNF/DMAc solutions, followed by thermal imidization at curing temperatures up to 250 °C. The benefit and limitation of functionalized VGCNF on the length scale and the extent of CNF dispersion in a polyimide matrix were clear:  (a) 0.18 wt % H2N−VGCNF-g-CP2 film was visually transparent whereas a similarly prepared (0.10 wt %) VGCNF/CP2 film showed the presence of large CNF aggregates throughout; (b) at 0.55 wt % H2N−VGCNF (equivalent to 0.30 wt % VGCNF) content, the nanocomposite film had become translucent, and at 9.19 wt % (equivalent to 5.0 wt % VGCNF), it was opaque. Since CP2 is very soluble in THF, the CP2-grafted VGCNF were simply separated from the free CP2 by solvent extraction. The molecular weights of the extracted CP2 were measured using gel-permeation chromatography (GPC). The effects of VGCNF on molecular weight (MW) and glass-transition (Tg) were discussed in terms of GPC and thermal analysis results, respectively. The dispersion of VGCNF in CP2 was evaluated using scanning electron microscopy (SEM). The tensile properties of these nanocomposite films were determined, showing up to 45% increase in modulus. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRIEDEL-Crafts reaction KW - BENZOIC acid KW - POLYIMIDES KW - SCANNING electron microscopy N1 - Accession Number: 26270517; David H. Wang 1 Michael J. Arlen 1 Jong-Beom Baek 1 Richard A.Vaia 1 Loon-Seng Tan 1; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469-0168, Department of Polymer Science,University of Akron, Akron, Ohio 44325, Department of Industrial Chemistry, Chungbuk NationalUniversity, Chungbuk, 361-763, South Korea, and Polymer Branch, AFRL/MLBP, Materials &Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7750; Source Info: Aug2007, Vol. 40 Issue 17, p6100; Subject Term: FRIEDEL-Crafts reaction; Subject Term: BENZOIC acid; Subject Term: POLYIMIDES; Subject Term: SCANNING electron microscopy; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26270517&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mosbacker, H. L. AU - Zgrabik, C. AU - Hetzer, M. J. AU - Swain, A. AU - Look, D. C. AU - Cantwell, G. AU - Zhang, J. AU - Song, J. J. AU - Brillson, L. J. T1 - Thermally driven defect formation and blocking layers at metal-ZnO interfaces. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/08/13/ VL - 91 IS - 7 M3 - Article SP - 072102 PB - American Institute of Physics SN - 00036951 AB - The authors used depth-resolved cathodoluminescence spectroscopy and current-voltage measurements to probe the temperature-dependent formation of native point defects and reaction layers at metal-ZnO interfaces and their effect on transport properties. These results identify characteristic defect emissions corresponding to metal-Zn alloy versus oxide formation. Au alloys with Zn above its eutectic temperature, while Ta forms oxide blocking layers that reduce current by orders of magnitude at intermediate temperatures. Defects generated at higher temperatures and/or with higher initial defect densities for all interfaces produce Ohmic contacts. These reactions and defect formation with annealing reveal a thermodynamic control of blocking versus Ohmic contacts. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OHMIC contacts KW - ELECTRIC contactors KW - SEMICONDUCTOR-metal boundaries KW - ALLOYS KW - PHYSICS N1 - Accession Number: 26369973; Mosbacker, H. L. 1 Zgrabik, C. 1 Hetzer, M. J. 1 Swain, A. 2 Look, D. C. 3 Cantwell, G. 4 Zhang, J. 4 Song, J. J. 4 Brillson, L. J. 5; Affiliation: 1: Department of Physics, The Ohio State University, Columbus, Ohio 43210 2: Columbus School for Girls, Bexley, Ohio 43209 3: Semiconductor Research Center, Wright State University, Dayton, Ohio 45433 and Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433 4: ZN Technology, Inc., 910 Columbia St., Brea, California 92821 5: Departments of Electrical and Computer Engineering, The Ohio State University, Columbus, Ohio 43210; Source Info: 8/13/2007, Vol. 91 Issue 7, p072102; Subject Term: OHMIC contacts; Subject Term: ELECTRIC contactors; Subject Term: SEMICONDUCTOR-metal boundaries; Subject Term: ALLOYS; Subject Term: PHYSICS; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.2772664 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26369973&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, K. Y. AU - Huang, W. P. AU - Cheng, H. H. AU - Sun, G. AU - Soref, R. A. AU - Nicholas, R. J. AU - Suen, Y. W. T1 - Observation of type-I and type-II excitons in strained Si/SiGe quantum-well structures. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/08/13/ VL - 91 IS - 7 M3 - Article SP - 072108 PB - American Institute of Physics SN - 00036951 AB - The authors report photoluminescence (PL) measurement on a series of Si/SiGe quantum-well structures that had different internal strain distributions. When each sample was placed in a high magnetic field, the field-dependent energy shift of the relevant PL peaks revealed either type-I or type-II exciton formation depending on the strain distribution. This observation is in agreement with theoretical modeling. The present investigation shows that type-I band alignment—desired for electroluminescent devices—can be achieved by strain engineering. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC fields KW - FIELD theory (Physics) KW - QUANTUM wells KW - SILICON KW - PHYSICS N1 - Accession Number: 26369951; Wang, K. Y. 1 Huang, W. P. 1 Cheng, H. H. 1 Sun, G. 2 Soref, R. A. 3 Nicholas, R. J. 4 Suen, Y. W. 5; Affiliation: 1: Center for Condensed Matter Sciences and Graduate Institute of Electronics Engineering, National Taiwan University, Taipei, 106 Taiwan, Republic of China 2: Department of Physics, University of Massachusetts, Boston, Massachusetts 02125 3: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731 4: Department of Physics, University of Oxford, Oxford OX1 3PU, United Kingdom 5: Department of Physics, National Chung Hsing University, Taichung 402, Taiwan and National Nano Device Laboratories, Hsinchu, Taiwan 30078, Republic of China; Source Info: 8/13/2007, Vol. 91 Issue 7, p072108; Subject Term: MAGNETIC fields; Subject Term: FIELD theory (Physics); Subject Term: QUANTUM wells; Subject Term: SILICON; Subject Term: PHYSICS; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 3p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.2771094 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26369951&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rogers, Joy E. AU - Siagle, Jonathan E. AU - Krein, Douglas M. AU - Burke, Aaron R. AU - Hall, Benjamin C. AU - Fratini, Albert AU - McLean, Daniel G. AU - Fleitz, Paul A. AU - Cooper, Thomas M. AU - Drobizhev, Mikhail AU - Makarov, Nikolay S. AU - Rebane, Aleksander AU - Kye-Young Kim AU - Farley, Richard AU - Schanze, Kirk S. T1 - Platinum Acetylide Two-Photon Chromophores. JO - Inorganic Chemistry JF - Inorganic Chemistry Y1 - 2007/08/06/ VL - 46 IS - 16 M3 - Article SP - 6483 EP - 6494 SN - 00201669 AB - To explore the photophysics of platinum acetylide chromophores with strong two-photon absorption cross-sections, we have investigated the synthesis and spectroscopic characterization of a series of platinum acetylide complexes that feature highly π-conjugated ligands substituted with π-donor or -acceptor moieties. The molecules (numbered 1-4) considered in the present work are analogs of bis(phenylethynyl)bis(tributylphosphine)platinum(ll) complexes. Molecule 1 carries two alkynyl-benzothiazolylfluorene ligands, and molecule 2 has two alkynyl-diphenylaminofluorene ligands bound to the central platinum atom. Compounds 3 and 4 possess two dihexylaminophenyl substituents at their ends and differ by the number of platinum atoms in the oligomer "core" (one vs two in 3 and 4, respectively). The ligands have strong effective two-photon absorption cross-sections, while the heavy metal platinum centers give rise to efficient intersystem crossing to long-lived triplet states. Ultrafast transient absorption and emission spectra demonstrate that one-photon excitation of the chromophores produces an S1 state delocalized across the two conjugated ligands, with weak (excitonic) coupling through the platinum centers. Intersystem crossing occurs rapidly (kisc ≈ 1011 s-1) to produce the T1 state, which is possibly localized on a single conjugated fluorenyl ligand. The triplet state is strongly absorbing (ϵTT > 5 x 104 M-1 cm-1), and it is very long-lived (τ > 100 µs). Femtosecond pulses were used to characterize the two-photon absorption properties of the complexes, and all of the chromophores are relatively efficient two-photon absorbers in the visible and near-infrared region of the spectrum (600-800 nm). The complexes exhibit maximum two-photon absorption at a shorter wavelength than 2λ for the one-photon band, consistent with the dominant two-photon transition arising from a two-photon-allowed gerade-gerade transition. Nanosecond transient absorption experiments carried out on several of the complexes with excitation at 803 nm confirm that the long-lived triplet state can be produced efficiently via a sequence involving two-photon excitation to produce S1, followed by intersystem crossing to produce T1. [ABSTRACT FROM AUTHOR] AB - Copyright of Inorganic Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTONS KW - LIGANDS KW - MOLECULES KW - ATOMS KW - HEAVY metals KW - ENERGY levels (Quantum mechanics) N1 - Accession Number: 26909296; Rogers, Joy E. 1,2 Siagle, Jonathan E. 1,3 Krein, Douglas M. 1,4 Burke, Aaron R. 1,4 Hall, Benjamin C. 1,5 Fratini, Albert 1,6 McLean, Daniel G. 1,7 Fleitz, Paul A. 1 Cooper, Thomas M. 1; Email Address: Thomas.Cooper@wpafb.af.mil Drobizhev, Mikhail 8 Makarov, Nikolay S. 8 Rebane, Aleksander 8; Email Address: rebane@physics.montana.edu Kye-Young Kim 9 Farley, Richard 9 Schanze, Kirk S. 9; Email Address: kschanze@chem.ufl.edu; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright- Patterson Air Force Base, Ohio 45433 2: UES, Inc., Dayton, Ohio 45432 3: AT&T Government Solutions, Dayton, Ohio 45324 4: General Dynamics information Technology, Dayton, Ohio 45431 5: Universal Technology Corporation, Dayton, Ohio 45432 6: Department of Chemistry, University of Dayton, Dayton, Ohio 45469 7: Science Applications International Corporation, Dayton, Ohio 45431 8: Physics Department, Montana State University, Bozeman, Montana 59717 9: Department of Chemistry, University of Florida, Gainesville, Florida 32611; Source Info: 8/6/2007, Vol. 46 Issue 16, p6483; Subject Term: PHOTONS; Subject Term: LIGANDS; Subject Term: MOLECULES; Subject Term: ATOMS; Subject Term: HEAVY metals; Subject Term: ENERGY levels (Quantum mechanics); Number of Pages: 12p; Illustrations: 1 Diagram, 4 Charts, 6 Graphs; Document Type: Article L3 - 10.1021/ic700549n UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26909296&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rizzetta, Donald P. AU - Visbal, Miguel R. T1 - Direct Numerical Simulations of Flow Past an Array of Distributed Roughness Elements. JO - AIAA Journal JF - AIAA Journal Y1 - 2007/08// VL - 45 IS - 8 M3 - Article SP - 1967 EP - 1967 SN - 00011452 AB - Direct numerical simulation was used to describe the subsonic flow past an array of distributed cylindrical roughness elements mounted on a flat plate. Solutions were obtained for element heights corresponding to a roughness-based Reynolds number (Rek) of both 202 and 334. The numerical method used a sixth-order-accurate centered compact finite difference scheme to represent spatial derivatives, which was used in conjunction with a tenth-order low-pass Pade-type nondispersive filter operator to maintain stability. An implicit approximately factored time-marching algorithm was employed, and Newton-like subiterations were applied to achieve second-order temporal accuracy. Calculations were carried out on a massively parallel computing platform, using domain decomposition to distribute subzones on individual processors. A high-order overset grid approach preserved spatial accuracy on the mesh system used to represent the roughness elements. Features of the flowfields are described, and results of the computations are compared with experimentally measured velocity components of the time-mean flowfield, which are available only for Rek = 202. Flow about the elements is characterized by a system of two weak corotating horseshoe vortices. For Rek = 334, an unstable shear layer emanating from the top of the cylindrical element generated nonlinear unsteady disturbances of sufficient amplitude to produce explosive bypass transition downstream of the array. The Rek = 202 case displayed exponential growth of turbulence energy in the streamwise direction, which may eventually result in transition. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUMERICAL analysis KW - SIMULATION methods & models KW - AERODYNAMICS KW - SURFACE roughness KW - REYNOLDS number KW - FINITE differences KW - ALGORITHMS N1 - Accession Number: 26092870; Rizzetta, Donald P. 1 Visbal, Miguel R. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright--Patterson Air Force Base, Ohio 45433-7512; Source Info: Aug2007, Vol. 45 Issue 8, p1967; Subject Term: NUMERICAL analysis; Subject Term: SIMULATION methods & models; Subject Term: AERODYNAMICS; Subject Term: SURFACE roughness; Subject Term: REYNOLDS number; Subject Term: FINITE differences; Subject Term: ALGORITHMS; Number of Pages: 1p; Document Type: Article L3 - 10.2514/1.25916 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26092870&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Greeley, Harold P. AU - Berg, Joel AU - Friets, Eric AU - Wilson, John AU - Greenough, Glen AU - Picone, Joseph AU - Whitmore, Jeffrey AU - Nesthus, Thomas T1 - Fatigue estimation using voice analysis. JO - Behavior Research Methods JF - Behavior Research Methods Y1 - 2007/08// VL - 39 IS - 3 M3 - Article SP - 610 EP - 619 SN - 1554351X AB - In the present article, we present a means to remotely and transparently estimate an individual's level of fatigue by quantifying changes in his or her voice characteristics. Using Voice analysis to estimate fatigue is unique from established cognitive measures in a number of ways: (1) speaking is a natural activity requiring no initial training or learning curve, (2) voice recording is a unobtrusive operation allowing the speakers to go about their normal work activities, (3) using telecommunication infrastructure (radio, telephone, etc.) a diffuse set of remote populations can be monitored at a central location, and (4) often, previously recorded voice data are available for post hoc analysis. By quantifying changes in the mathematical coefficients that describe the human speech production process, we were able to demonstrate that for speech sounds requiring a large average air flow, a speaker's voice changes in synchrony with both direct measures of fatigue and with changes predicted by the length of time awake. [ABSTRACT FROM AUTHOR] AB - Copyright of Behavior Research Methods is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE KW - VOICE analysis KW - SPEECH perception KW - PHYSIOLOGY KW - SPEECH N1 - Accession Number: 27263032; Greeley, Harold P. 1; Email Address: hpg.ra@verizon.net Berg, Joel 1 Friets, Eric 1 Wilson, John 1 Greenough, Glen 2 Picone, Joseph 3 Whitmore, Jeffrey 4 Nesthus, Thomas 5; Affiliation: 1: Creare Incorporated, Hanover, New Hampshire 2: Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire 3: University of Mississippi, Starksville, Mississippi 4: Air Force Research Laboratory, Brooks City-Base, Texas 5: FAA Civil Aerospace Medical Institute, Oklahoma City, Oklahoma; Source Info: Aug2007, Vol. 39 Issue 3, p610; Subject Term: FATIGUE; Subject Term: VOICE analysis; Subject Term: SPEECH perception; Subject Term: PHYSIOLOGY; Subject Term: SPEECH; Number of Pages: 10p; Illustrations: 2 Diagrams, 1 Chart, 8 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27263032&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boyle, Stephen H. AU - Jackson, William G. AU - Suarez, Edward C. T1 - Hostility, anger, and depression predict increases in C3 over a 10-year period JO - Brain, Behavior & Immunity JF - Brain, Behavior & Immunity Y1 - 2007/08// VL - 21 IS - 6 M3 - Article SP - 816 EP - 823 SN - 08891591 AB - Abstract: We examined the relation of hostility, anger, and depression to 10-year changes in the third (C3), and fourth (C4) complement in 313, apparently healthy male participants enrolled in the Air Force Health Study (AFHS), a 20-year study designed to evaluate the health consequences of dioxin exposure. Hostility, depression, and anger were assessed using subscales from the Minnesota Multiphasic Personality Inventory (MMPI), which was administered in 1985. Given the high intercorrelations among these psychological scales, we used a principal component analysis to generate a composite score representing the linear combination of the hostility, anger, and depression scales. The dependent variables, C3 and C4 levels, were determined from samples collected in 1992, 1997, and 2002. Regression analyses controlling for age, race, alcohol use, body mass index, and cigarette use as well as onset of disease, and use of lipid lowering and blood pressure medications during follow-up revealed a significant time×composite score interaction for C3 complement (p <.0003), but not C4. Post-hoc analyses revealed that high composite scores were associated with larger 10-year increases in C3. These observations suggest that men who are hostile and are prone to experience frequent and intense feelings of anger, and depression show activation of the complement system, and specifically increases in C3, that may contribute to the development of coronary heart disease. [Copyright &y& Elsevier] AB - Copyright of Brain, Behavior & Immunity is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANGER KW - HOSTILITY (Psychology) KW - CIGARETTE smokers KW - HEART diseases KW - Anger KW - Complement KW - Depression KW - Hostility KW - Men N1 - Accession Number: 25616431; Boyle, Stephen H. 1; Email Address: boyle020@mc.duke.edu Jackson, William G. 2 Suarez, Edward C. 1; Email Address: suare001@mc.duke.edu; Affiliation: 1: Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, P.O. Box 3328, Durham, NC 27710, USA 2: Air Force Research Laboratory Brooks-City Base, TX, USA; Source Info: Aug2007, Vol. 21 Issue 6, p816; Subject Term: ANGER; Subject Term: HOSTILITY (Psychology); Subject Term: CIGARETTE smokers; Subject Term: HEART diseases; Author-Supplied Keyword: Anger; Author-Supplied Keyword: Complement; Author-Supplied Keyword: Depression; Author-Supplied Keyword: Hostility; Author-Supplied Keyword: Men; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.bbi.2007.01.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25616431&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yang, Mei AU - Ma, Nancy AU - Bliss, David F. AU - Bryant, George G. T1 - Melt motion during liquid-encapsulated Czochralski crystal growth in steady and rotating magnetic fields JO - International Journal of Heat & Fluid Flow JF - International Journal of Heat & Fluid Flow Y1 - 2007/08// VL - 28 IS - 4 M3 - Article SP - 768 EP - 776 SN - 0142727X AB - Abstract: During the liquid-encapsulated Czochralski (LEC) process, a single compound semiconductor crystal such as gallium-antimonide is grown by the solidification of an initially molten semiconductor (melt) contained in a crucible. The motion of the electrically-conducting molten semiconductor can be controlled with externally-applied magnetic fields. A steady magnetic field provides an electromagnetic stabilization of the melt motion during the LEC process. With a steady axial magnetic field alone, the melt motion produces a radially-inward flow below the crystal–melt interface. Recently, an extremely promising flow phenomenon has been revealed in which a rotating magnetic field induces a radially-inward flow below the crystal–melt interface that may significantly improve the compositional homogeneity in the crystal. This paper presents a model for the melt motion during the LEC process with steady and rotating magnetic fields. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Fluid Flow is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM (Metal) KW - MAGNETIC fields KW - CRYSTAL growth KW - MAGNETICS KW - Electromagnetic stirring KW - Liquid encapsulated Czochralski method KW - Magnetic fields KW - Numerical modelling KW - Semiconductor crystal growth KW - Single crystal growth N1 - Accession Number: 25827072; Yang, Mei 1 Ma, Nancy 1; Email Address: nancy_ma@ncsu.edu Bliss, David F. 2 Bryant, George G. 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, North Carolina State University, 2601 Stinson Drive, Campus Box 7910, Raleigh NC 27695, USA 2: US Air Force Research Laboratory, Sensors Directorate, AFRL/SNHC, 80 Scott Road, Hanscom AFB, MA 01731, USA; Source Info: Aug2007, Vol. 28 Issue 4, p768; Subject Term: GALLIUM (Metal); Subject Term: MAGNETIC fields; Subject Term: CRYSTAL growth; Subject Term: MAGNETICS; Author-Supplied Keyword: Electromagnetic stirring; Author-Supplied Keyword: Liquid encapsulated Czochralski method; Author-Supplied Keyword: Magnetic fields; Author-Supplied Keyword: Numerical modelling; Author-Supplied Keyword: Semiconductor crystal growth; Author-Supplied Keyword: Single crystal growth; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijheatfluidflow.2006.08.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25827072&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nainaparampil, Josekutty J. AU - Eapen, Kalathil C. AU - Sanders, Jeffrey H. AU - Voevódin, Andrey A. T1 - Ionic-Liquid Lubrication of Sliding MEMS Contacts: Comparison of AFM Liquid Cell and Device-Level Tests. JO - Journal of Microelectromechanical Systems JF - Journal of Microelectromechanical Systems Y1 - 2007/08// VL - 16 IS - 4 M3 - Article SP - 836 EP - 843 SN - 10577157 AB - Lubrication of microelectromechanical systems (MEMS) became very critical as the devices became complex and its reliability began to deteriorate. In this paper, ionic liquids (ILs) with low volatility and high environmental stability were investigated as lubricants for sliding MEMS devices. A method that is based on atomic force microscopy (AFM) with a liquid cell was developed to study friction and wear properties of surfaces lubricated with ILs, having a systematic variation in molecular geometry and chemistry. Six-member pyridinium and five-member imidazolium rings are compared as cations in ethyl methyl pyridinium and ethyl methyl imidazolium ethyl sulfate; influence of short and long alkyl chain lengths on lubrication is studied with butyl methyl pyrrolidinium and hexyl methyl pyrrolidinium bis(trifluro methyl sulfonyl) imide. Formation of a surface-screening cation layer was discovered and linked to low friction and wear of IL-lubricated hydrogenated-silicon (H-Si) substrates. Several promising IL lubricants were identified from the AFM study and were tested in real MEMS motor devices. The friction and wear data obtained for these tests showed good correlation with the failure life span of lubricated MEMS motors. This supports a conclusion that the AFM-liquid-cell technique can be used in screening IL lubricants for MEMS devices. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microelectromechanical Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATOMIC force microscopy KW - SCANNING probe microscopy KW - LUBRICATION & lubricants KW - LUBRICATION systems KW - MICROELECTROMECHANICAL systems KW - ELECTROMECHANICAL devices KW - MECHATRONICS KW - MECHANICAL engineering KW - MICROELECTRONICS KW - Atomic force microscopy (AFM) KW - boundary lubrication KW - ionic liquid (IL) KW - microelectromechanical system (MEMS) N1 - Accession Number: 26207678; Nainaparampil, Josekutty J. 1; Email Address: jose.nain@wpafb.af.mil Eapen, Kalathil C. Sanders, Jeffrey H. 2 Voevódin, Andrey A. 3; Affiliation: 1: UES, Inc., Dayton, OH 45432 USA 2: Air Force Materiel Command Headquarters, Wright- Patterson Air Force Base, Dayton, OH 45433 USA. 3: Tribology Research Group, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433 USA.; Source Info: Aug2007, Vol. 16 Issue 4, p836; Subject Term: ATOMIC force microscopy; Subject Term: SCANNING probe microscopy; Subject Term: LUBRICATION & lubricants; Subject Term: LUBRICATION systems; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: ELECTROMECHANICAL devices; Subject Term: MECHATRONICS; Subject Term: MECHANICAL engineering; Subject Term: MICROELECTRONICS; Author-Supplied Keyword: Atomic force microscopy (AFM); Author-Supplied Keyword: boundary lubrication; Author-Supplied Keyword: ionic liquid (IL); Author-Supplied Keyword: microelectromechanical system (MEMS); NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334512 Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use; NAICS/Industry Codes: 334514 Totalizing Fluid Meter and Counting Device Manufacturing; NAICS/Industry Codes: 334290 Other Communications Equipment Manufacturing; NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; NAICS/Industry Codes: 324191 Petroleum Lubricating Oil and Grease Manufacturing; NAICS/Industry Codes: 541330 Engineering Services; Number of Pages: 8p; Illustrations: 5 Diagrams, 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1 109/JMEMS.2007.901628 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26207678&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Repperger, Daniel W. AU - Aleva, Denise L. AU - Thomas, Gina AU - Miller, Janet E. AU - Fullenkamp, Stephen C. T1 - COMPLEXITY OF VISUAL ICONS STUDIED VIA SIGNAL DETECTION THEORY. JO - Perceptual & Motor Skills JF - Perceptual & Motor Skills Y1 - 2007/08// VL - 105 IS - 1 M3 - Article SP - 287 EP - 298 SN - 00315125 AB - Two investigations on how humans perceive information from visually rendered complex objects, such as military icons (glyphs) were conducted. A signal detection theory framework was employed to evaluate the sensitivity and specificity of human subject performance. The 6 adults tested showed that as complexity increased, their accuracy in performance decreased. Study 1 showed that complex dimensions (features) could not be assigned arbitrarily. Study 2 developed a rank ordering for features of an iconic object. [ABSTRACT FROM AUTHOR] AB - Copyright of Perceptual & Motor Skills is the property of Ammons Scientific, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERCEPTION KW - THOUGHT & thinking KW - SIGNAL detection (Psychology) KW - VIGILANCE (Psychology) KW - ATTENTION KW - ICONS (Computer graphics) KW - GRAPHICAL user interfaces (Computer systems) KW - MATHEMATICAL models KW - SIMULATION methods & models N1 - Accession Number: 26646632; Repperger, Daniel W. 1; Email Address: Daniel.repperger@wpafb.af.mil Aleva, Denise L. 1 Thomas, Gina 1 Miller, Janet E. 1 Fullenkamp, Stephen C. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base 2: General Dynamics, Inc., Dayton, OH; Source Info: Aug2007, Vol. 105 Issue 1, p287; Subject Term: PERCEPTION; Subject Term: THOUGHT & thinking; Subject Term: SIGNAL detection (Psychology); Subject Term: VIGILANCE (Psychology); Subject Term: ATTENTION; Subject Term: ICONS (Computer graphics); Subject Term: GRAPHICAL user interfaces (Computer systems); Subject Term: MATHEMATICAL models; Subject Term: SIMULATION methods & models; Number of Pages: 2p; Illustrations: 1 Black and White Photograph, 5 Diagrams, 3 Charts, 3 Graphs; Document Type: Article L3 - 10.2466/PMS.105.1.287-298 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26646632&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Hyukjae AU - Mall, Shankar AU - Sanders, Jeffrey H. AU - Sharma, Shashi K. AU - Magaziner, Russell S. T1 - Characterization of fretting wear behavior of Cu–Al coating on Ti–6Al–4V substrate JO - Tribology International JF - Tribology International Y1 - 2007/08// VL - 40 IS - 8 M3 - Article SP - 1301 EP - 1310 SN - 0301679X AB - Abstract: Fretting wear and fretting fatigue are two commonly observed material damages when two contacting bodies with a clamping load are under the oscillatory motion. In this study, fretting wear damage of Cu–Al coating on titanium alloy, Ti–6Al–4V substrate was investigated using the dissipated energy approach. Fretting tests were conducted with either no fatigue load or the maximum fatigue load of 300MPa and stress ratio of 0.1 on the substrate (specimen). In order to investigate the effect of contact load and contact size, different pad sizes and contact loads were used in the tests. Accumulated dissipated energy versus wear volume data showed a linear relationship regardless of fatigue loading condition on specimen with the smaller pad size. However, two separate linear relationships were observed based on the fatigue loading condition with the larger pad size, such that a relatively more dissipated energy was required for a certain amount of wear with fatigue load on the specimen. The linear relationship between the accumulated dissipated energy and wear volume for both pad sizes extended from partial to gross slip regimes and was not affected by the applied contact load. Further, fretting tests with and without fatigue load resulted in different shapes of fretting loops when the larger pad size was used. [Copyright &y& Elsevier] AB - Copyright of Tribology International is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - COBALT-titanium-carbon alloys KW - COPPER-titanium alloys KW - COPPER-titanium-zinc alloys KW - Accumulated dissipated energy KW - Cu–Al coating KW - Fretting wear N1 - Accession Number: 24867272; Lee, Hyukjae 1 Mall, Shankar 2; Email Address: Shankar.Mall@afit.edu Sanders, Jeffrey H. 3 Sharma, Shashi K. 3 Magaziner, Russell S. 2; Affiliation: 1: School of Advanced Materials Engineering, Andong National University, Andong, Gyungbuk 760-749, South Korea 2: Department of Aeronautics and Astronautics, AFIT/ENY, Air Force Institute of Technology, 2950 Hobson way, Wright-Patterson AFB, OH 45433-7765, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Aug2007, Vol. 40 Issue 8, p1301; Subject Term: TITANIUM alloys; Subject Term: COBALT-titanium-carbon alloys; Subject Term: COPPER-titanium alloys; Subject Term: COPPER-titanium-zinc alloys; Author-Supplied Keyword: Accumulated dissipated energy; Author-Supplied Keyword: Cu–Al coating; Author-Supplied Keyword: Fretting wear; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.triboint.2007.02.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24867272&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rüggeberg, Jens U. AU - Gold, Michael S. AU - Bayas, José-Maria AU - Blum, Michael D. AU - Bonhoeffer, Jan AU - Friedlander, Sheila AU - de Souza Brito, Glacus AU - Heininger, Ulrich AU - Imoukhuede, Babatunde AU - Khamesipour, Ali AU - Erlewyn-Lajeunesse, Michel AU - Martin, Susana AU - Mäkelä, Mika AU - Nell, Patricia AU - Pool, Vitali AU - Simpson, Nick T1 - Anaphylaxis: Case definition and guidelines for data collection, analysis, and presentation of immunization safety data JO - Vaccine JF - Vaccine Y1 - 2007/08// VL - 25 IS - 31 M3 - Article SP - 5675 EP - 5684 SN - 0264410X KW - Adverse event KW - Anaphylaxis KW - Case definition KW - Guidelines KW - Immunization N1 - Accession Number: 25750817; Rüggeberg, Jens U. 1,2 Gold, Michael S. 3 Bayas, José-Maria 4 Blum, Michael D. 5 Bonhoeffer, Jan 6 Friedlander, Sheila 7 de Souza Brito, Glacus 8 Heininger, Ulrich 6; Email Address: secretariat@brightoncollaboration.org Imoukhuede, Babatunde 9 Khamesipour, Ali 10 Erlewyn-Lajeunesse, Michel 11 Martin, Susana 12 Mäkelä, Mika 13 Nell, Patricia 14 Pool, Vitali 15 Simpson, Nick 16; Affiliation: 1: Pädiatrische Infektiologie, Universitätskinderklinik Düsseldorf, Germany 2: St. Georges Hospital Medical School, London, UK 3: South Australian Immunisation Coordination Unit, University of Adelaide, Australia 4: Hospital Clinic i Provincial de Barcelona, Barcelona, Spain 5: Wyeth Research, Collegeville, PA, USA 6: University Children's Hospital, Basel, Switzerland 7: University of California San Diego Medical Center, La Jolla, USA 8: Sao Paulo State University, Sao Paulo, Brazil 9: MRC Fajara, Banjul, The Gambia 10: Tehran University of Medical Sciences, Tehran, Iran 11: University of Bristol, Bristol, UK 12: EAP Santa Hortensia, Area 2, Madrid, Spain 13: University Central Hospital Helsinki, Finland 14: Airforce Reserve Command, United States Air Force, Sturgeon Bay, WI, USA 15: Centers for Disease Control and Prevention, Atlanta, GA, USA 16: John Curtin School of Medical Research, Canberra, Australia; Source Info: Aug2007, Vol. 25 Issue 31, p5675; Author-Supplied Keyword: Adverse event; Author-Supplied Keyword: Anaphylaxis; Author-Supplied Keyword: Case definition; Author-Supplied Keyword: Guidelines; Author-Supplied Keyword: Immunization; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25750817&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beigel, John AU - Kohl, Katrin S. AU - Khuri-Bulos, Najwa AU - Bravo, Lulu AU - Nell, Patricia AU - Marcy, S. Michael AU - Warschaw, Karen AU - Ong-Lim, Anna AU - Poerschke, Gabriele AU - Weston, William AU - Lindstrom, Jill A. AU - Stoltman, Gillian AU - Maurer, Toby T1 - Rash including mucosal involvement: Case definition and guidelines for collection, analysis, and presentation of immunization safety data JO - Vaccine JF - Vaccine Y1 - 2007/08// VL - 25 IS - 31 M3 - Article SP - 5697 EP - 5706 SN - 0264410X KW - Adverse event KW - Case definition KW - Guidelines KW - Immunization KW - Mucocutaneous KW - Rash N1 - Accession Number: 25750819; Beigel, John 1 Kohl, Katrin S. 2; Email Address: secretariat@brightoncollaboration.org Khuri-Bulos, Najwa 3 Bravo, Lulu 4 Nell, Patricia 5 Marcy, S. Michael 6 Warschaw, Karen 7 Ong-Lim, Anna 4 Poerschke, Gabriele 8 Weston, William 9 Lindstrom, Jill A. 10 Stoltman, Gillian 11 Maurer, Toby 12; Affiliation: 1: National Institute of Health, Bethesda, MD, USA 2: Centers for Disease Control and Prevention, Atlanta, GA, USA 3: Jordan University Hospital, Amman, Jordan 4: University of the Philippines, Manila, Philippines 5: United States Air Force, Sturgeon Bay, WI, USA 6: University of Southern California and University of California Los Angeles Schools of Medicine, Kaiser Foundation Hospital, Panorama City, CA, USA 7: Mayo Clinic, Scottsdale, AZ, USA 8: Merck, Sharp & Dohme (Asia) Ltd., Hong Kong, Hong Kong 9: University of Colorado, Aurora, CO, USA 10: Food and Drug Administration, Rockville, MD, USA 11: Michigan Department of Community Health, Lansing, MI, USA 12: University of California, San Francisco, CA, USA; Source Info: Aug2007, Vol. 25 Issue 31, p5697; Author-Supplied Keyword: Adverse event; Author-Supplied Keyword: Case definition; Author-Supplied Keyword: Guidelines; Author-Supplied Keyword: Immunization; Author-Supplied Keyword: Mucocutaneous; Author-Supplied Keyword: Rash; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25750819&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nell, Patricia AU - Kohl, Katrin S. AU - Graham, Philip L. AU - LaRussa, Philip S. AU - Marcy, S. Michael AU - Fulginiti, Vincent A. AU - Martin, Bryan AU - Trolin, Ingrid AU - Norton, Scott A. AU - Neff, John M. T1 - Eczema vaccinatum as an adverse event following exposure to vaccinia virus: Case definition & guidelines of data collection, analysis, and presentation of immunization safety data JO - Vaccine JF - Vaccine Y1 - 2007/08// VL - 25 IS - 31 M3 - Article SP - 5725 EP - 5734 SN - 0264410X KW - Adverse event KW - Case definition KW - Eczema vaccinatum KW - Guidelines KW - Immunization KW - Smallpox vaccine KW - Vaccinia virus N1 - Accession Number: 25750822; Nell, Patricia 1 Kohl, Katrin S. 2; Email Address: secretariat@brightoncollaboration.org Graham, Philip L. 3 LaRussa, Philip S. 4 Marcy, S. Michael 5 Fulginiti, Vincent A. 6 Martin, Bryan 7 Trolin, Ingrid 8 Norton, Scott A. 9 Neff, John M. 10; Affiliation: 1: Airforce Reserve Command, United States Air Force, Sturgeon Bay, WI, USA 2: Immunization Safety Office, Office of the Chief Science Officer, Centers for Disease Control and Prevention, Atlanta, GA, USA 3: Department of Pediatrics, College of Physicians & Surgeons, Columbia University, Department of Epidemiology, New York Presbyterian Hospital, New York, NY, USA 4: Department of Pediatrics, College of Physicians and Surgeons, Columbia University, New York, NY, USA 5: University of Southern California and University of California Los Angeles Schools of Medicine, Kaiser Foundation Hospital, Panorama City, CA, USA 6: Department of Pediatrics, University of Arizona, Tucson, AZ and University of Colorado, Denver, CO, USA 7: Department of Allergy and Immunology, Walter Reed Army Hospital, Washington, DC, USA 8: Medical Product Agency, Uppsala, Sweden 9: Walter Reed Army Medical Center, Washington, DC, USA 10: Children's Hospital and Regional Medical Center, Seattle, WA, USA; Source Info: Aug2007, Vol. 25 Issue 31, p5725; Author-Supplied Keyword: Adverse event; Author-Supplied Keyword: Case definition; Author-Supplied Keyword: Eczema vaccinatum; Author-Supplied Keyword: Guidelines; Author-Supplied Keyword: Immunization; Author-Supplied Keyword: Smallpox vaccine; Author-Supplied Keyword: Vaccinia virus; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.vaccine.2007.02.085 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25750822&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nell, Patricia AU - Kohl, Katrin S. AU - Graham, Philip L. AU - LaRussa, Philip S. AU - Marcy, S. Michael AU - Fulginiti, Vincent A. AU - Martin, Bryan AU - McMahon, Ann AU - Norton, Scott A. AU - Trolin, Ingrid T1 - Progressive vaccinia as an adverse event following exposure to vaccinia virus: Case definition and guidelines of data collection, analysis, and presentation of immunization safety data JO - Vaccine JF - Vaccine Y1 - 2007/08// VL - 25 IS - 31 M3 - Article SP - 5735 EP - 5744 SN - 0264410X KW - Adverse event KW - Case definition KW - Guidelines KW - Immunization KW - Progressive vaccinia KW - Smallpox vaccine KW - Vaccinia virus N1 - Accession Number: 25750823; Nell, Patricia 1 Kohl, Katrin S. 2; Email Address: secretariat@brightoncollaboration.org Graham, Philip L. 3 LaRussa, Philip S. 4 Marcy, S. Michael 5 Fulginiti, Vincent A. 6 Martin, Bryan 7 McMahon, Ann 8 Norton, Scott A. 9 Trolin, Ingrid 10; Affiliation: 1: Airforce Reserve Command, United States Air Force, Sturgeon Bay, WI, USA 2: Immunization Safety Office, Office of the Chief Science Officer, Centers for Disease Control and Prevention, Atlanta, GA, USA 3: Department of Pediatrics, College of Physicians & Surgeons, Columbia University, Department of Epidemiology, New York Presbyterian Hospital, New York, NY, USA 4: Department of Pediatrics, College of Physicians and Surgeons, Columbia University, New York, NY, USA 5: University of Southern California and University of California Los Angeles Schools of Medicine; Kaiser Foundation Hospital, Panorama City, CA, USA 6: Department of Pediatrics, University of Arizona Tucson, AZ and University of Colorado, Denver, CO, USA 7: Department of Allergy and Immunology, Walter Reed Army Hospital, Washington, DC, USA 8: Vaccine Safety Branch, Food and Drug Administration, Rockville, MD, USA 9: Walter Reed Army Medical Center, Washington, DC, USA 10: Medical Product Agency, Uppsala, Sweden; Source Info: Aug2007, Vol. 25 Issue 31, p5735; Author-Supplied Keyword: Adverse event; Author-Supplied Keyword: Case definition; Author-Supplied Keyword: Guidelines; Author-Supplied Keyword: Immunization; Author-Supplied Keyword: Progressive vaccinia; Author-Supplied Keyword: Smallpox vaccine; Author-Supplied Keyword: Vaccinia virus; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.vaccine.2007.02.088 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25750823&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beigel, John AU - Kohl, Katrin S. AU - Brinley, Floyd AU - Graham, Philip L. AU - Khuri-Bulos, Najwa AU - LaRussa, Philip S. AU - Nell, Patricia AU - Norton, Scott AU - Stoltman, Gillian AU - Tebaa, Amina AU - Warschaw, Karen T1 - Generalized vaccinia as an adverse event following exposure to vaccinia virus: Case definition and guidelines for data collection, analysis, and presentation of immunization safety data JO - Vaccine JF - Vaccine Y1 - 2007/08// VL - 25 IS - 31 M3 - Article SP - 5745 EP - 5753 SN - 0264410X KW - Adverse event KW - Case definition KW - Generalized vaccinia KW - Guidelines KW - Immunization KW - Smallpox vaccine KW - Vaccinia virus N1 - Accession Number: 25750824; Beigel, John 1 Kohl, Katrin S. 2; Email Address: secretariat@brightoncollaboration.org Brinley, Floyd 3 Graham, Philip L. 4 Khuri-Bulos, Najwa 5 LaRussa, Philip S. 6 Nell, Patricia 7 Norton, Scott 8 Stoltman, Gillian 9 Tebaa, Amina 10 Warschaw, Karen 11; Affiliation: 1: NIH Clinical Center, National Institute of Health, Bethesda, MD, USA 2: Immunization Safety Office, Office of the Chief Science Officer, Centers for Disease Control and Prevention, Atlanta, GA, USA 3: National Institute of Neurological Disorders & Stroke (retired), National Institute of Health, Bethesda, MD, USA 4: Department of Pediatrics, College of Physicians & Surgeons, Columbia University, Department of Epidemiology, New York Presbyterian Hospital, New York, NY, USA 5: Division of Pediatric Infectious Diseases, Jordan University Hospital, Amman, Jordan 6: Department of Pediatrics, College of Physicians and Surgeons, Columbia University, New York, NY, USA 7: Airforce Reserve Command (retired), United States Air Force, Sturgeon Bay, WI, USA 8: Walter Reed Army Medical Center, Washington, DC, USA 9: Division of Communicable Disease and Immunization, Michigan Department of Community Health, Lansing, MI, USA 10: Centre Antipoison et de Pharmacovigilance, Rabat, Morocco 11: Departments of Dermatology and Pathology, Mayo Clinic Scottsdale, Scottsdale, AZ, USA; Source Info: Aug2007, Vol. 25 Issue 31, p5745; Author-Supplied Keyword: Adverse event; Author-Supplied Keyword: Case definition; Author-Supplied Keyword: Generalized vaccinia; Author-Supplied Keyword: Guidelines; Author-Supplied Keyword: Immunization; Author-Supplied Keyword: Smallpox vaccine; Author-Supplied Keyword: Vaccinia virus; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.vaccine.2007.02.086 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25750824&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucht, Robert P. AU - Kinnius, Paul J. AU - Roy, Sukesh AU - Gord, James R. T1 - Theory of femtosecond coherent anti-Stokes Raman scattering spectroscopy of gas-phase transitions. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2007/07/28/ VL - 127 IS - 4 M3 - Article SP - 044316 PB - American Institute of Physics SN - 00219606 AB - A theoretical analysis of coherent anti-Stokes Raman scattering (CARS) spectroscopy of gas-phase resonances using femtosecond lasers is performed. The time-dependent density matrix equations for the femtosecond CARS process are formulated and manipulated into a form suitable for solution by direct numerical integration (DNI). The temporal shapes of the pump, Stokes, and probe laser pulses are specified as an input to the DNI calculations. It is assumed that the laser pulse shapes are 70 fs Gaussians and that the pulses are Fourier-transform limited. A single excited electronic level is defined as an effective intermediate level in the Raman process, and transition strengths are adjusted to match the experimental Raman polarizability. The excitation of the Raman coherence is investigated for different Q-branch rotational transitions in the fundamental 2330 cm-1 band of diatomic nitrogen, assuming that the pump and Stokes pulses are temporally overlapped. The excitation process is shown to be virtually identical for transitions ranging from Q(2) to Q(20). The excitation of the Raman coherences is also very efficient; for laser irradiances of 5×1017 W/m2, corresponding approximately to a 100 μJ, 70 fs pulse focused to 50 μm, approximately 10% of the population of the ground Raman level is pumped to the excited Raman level during the impulsive pump-Stokes excitation, and the magnitude of the induced Raman coherence reaches 40% of its maximum possible value. The theoretical results are compared with the results of experiments where the femtosecond CARS signal is recorded as a function of probe delay with respect to the impulsive pump-Stokes excitation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FEMTOCHEMISTRY KW - RAMAN spectroscopy KW - SPECTRUM analysis KW - FOURIER transforms KW - NUMERICAL integration KW - PHYSICAL & theoretical chemistry N1 - Accession Number: 26054177; Lucht, Robert P. 1; Email Address: lucht@purdue.edu Kinnius, Paul J. 1 Roy, Sukesh 2 Gord, James R. 3; Affiliation: 1: School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907-2088 2: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, Ohio 45440 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, Ohio 45433; Source Info: 7/28/2007, Vol. 127 Issue 4, p044316; Subject Term: FEMTOCHEMISTRY; Subject Term: RAMAN spectroscopy; Subject Term: SPECTRUM analysis; Subject Term: FOURIER transforms; Subject Term: NUMERICAL integration; Subject Term: PHYSICAL & theoretical chemistry; Number of Pages: 17p; Illustrations: 1 Diagram, 7 Graphs; Document Type: Article L3 - 10.1063/1.2751184 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26054177&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Iacono, Scott T. AU - Budy, Stephen M. AU - Mabry, Joseph M. AU - Smith, Dennis W. T1 - Synthesis, characterization, and properties of chain terminated polyhedral oligomeric silsesquioxane-functionalized perfluorocyclobutyl aryl ether copolymers JO - Polymer JF - Polymer Y1 - 2007/07/27/ VL - 48 IS - 16 M3 - Article SP - 4637 EP - 4645 SN - 00323861 AB - Abstract: A new class of perfluorocyclobutyl (PFCB) polymers covalently functionalized with polyhedral oligomeric silsesquioxane (POSS) is presented. Three discreetly functionalized POSS monomers possessing thermally reactive trifluorovinyl aryl ether (TFVE) were prepared in good yields. The POSS TFVE monomers were prepared by initial corner-capping of cyclopentyl (–C5H9), iso-butyl (–CH2CH(CH3)2), or trifluoropropyl (–CH2CH2CF3) functionalized POSS trisilanols with acetoxyethyltrichlorosilane followed by sequential acid-catalyzed deprotection and coupling with 4-(trifluorovinyloxy)benzoic acid. TFVE-functionalized POSS monomers were thermally polymerized with 4,4′-bis(4-trifluorovinyloxy)biphenyl or 2,2-bis(4-trifluorovinyloxybiphenyl)-1,1,1,3,3,3-hexafluoropropane monomers via a condensate-free, [2+2] step-growth polymerization. The polymerization afforded solution processable PFCB polymers with POSS macromer installed on the polymer chain ends. POSS monomers and their corresponding copolymers were characterized by 1H, 13C, 19F, and 29Si NMR, GPC, ATR-FTIR, and elemental combustion analysis. GPC trace analysis showed agreeable number-average molecular weight for various weight percent of cyclopentyl or iso-butyl and trifluoropropyl chain terminated POSS PFCB copolymers. DSC analysis showed the introduction of increasing POSS weight percent in the endcapped PFCB copolymers lowers the glass transition temperatures as high as 31°C. On the other hand, the trifluoropropyl POSS endcapped PFCB polymer glass transition temperature was unaffected when copolymerized with the more fluorinated 2,2-bis(4-trifluorovinyloxybiphenyl)-1,1,1,3,3,3-hexafluoropropane monomer. TGA analysis of POSS PFCB copolymers showed step-wise decomposition of copolymers resulting from the initial degradation of the POSS cages at 297–355°C in nitrogen and air which was confirmed by pyrolysis coupled with GC–MS. This initial weight loss was proportional to the weight percent of POSS incorporated into the polymer. The balance of decomposition was observed at 450–563°C in nitrogen and air which is higher than the PFCB homopolymers in most cases. Polymer surface characterization was performed on spin cast transparent, flexible films. These composite films exhibited good POSS dispersion within the matrix PFCB polymer as was shown by TEM analysis. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERIZATION KW - COPOLYMERS KW - MONOMERS KW - POLYMERS KW - ORGANIC compounds KW - Perfluorocyclobutyl (PFCB) polymer KW - Polyhedral oligomeric silsesquioxanes KW - POSS N1 - Accession Number: 25827456; Iacono, Scott T. 1 Budy, Stephen M. 1 Mabry, Joseph M. 2 Smith, Dennis W. 1; Email Address: dwsmith@clemson.edu; Affiliation: 1: Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET), Advanced Materials Research Laboratory, Clemson University, Clemson, SC 29634, USA 2: Air Force Research Laboratory, Propulsion Directorate, 10 East Saturn Blvd, Edwards Air Force Base, CA 93524, USA; Source Info: Jul2007, Vol. 48 Issue 16, p4637; Subject Term: POLYMERIZATION; Subject Term: COPOLYMERS; Subject Term: MONOMERS; Subject Term: POLYMERS; Subject Term: ORGANIC compounds; Author-Supplied Keyword: Perfluorocyclobutyl (PFCB) polymer; Author-Supplied Keyword: Polyhedral oligomeric silsesquioxanes; Author-Supplied Keyword: POSS; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.polymer.2007.06.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25827456&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miniewicz, Andrzej AU - Kochalska, Anna AU - Mysliwiec, Jaroslaw AU - Samoc, Anna AU - Samoc, Marek AU - Grote, James G. T1 - Deoxyribonucleic acid-based photochromic material for fast dynamic holography. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/07/23/ VL - 91 IS - 4 M3 - Article SP - 041118 PB - American Institute of Physics SN - 00036951 AB - The authors report on a biopolymeric material made of deoxyribonucleic acid (DNA) complexed with the cationic surfactant cetyltrimethyl-ammonium (CTMA) and doped with the photochromic disperse red 1 dye (DR1) for dynamic holographic recording. The molar ratio of the DNA-CTMA to the dye is about 5:1. They have found that the photochromic properties of DR1 in the DNA-CTMA matrix are favorably modified in speed of response with respect to conventional polymeric matrices. Dynamic holographic gratings which were inscribed in DR1:DNA-CTMA films are characterized by switching times within a 1–10 ms range. An excellent reversibility of the recording process is reported. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DNA KW - NUCLEIC acids KW - MATRICES KW - SURFACE active agents KW - HOLOGRAPHY N1 - Accession Number: 26088176; Miniewicz, Andrzej 1 Kochalska, Anna 1 Mysliwiec, Jaroslaw 1 Samoc, Anna 2 Samoc, Marek 2 Grote, James G. 3; Affiliation: 1: Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, 50370 Wroclaw, Poland 2: Laser Physics Centre, Research School of Physical Sciences and Engineering, The Australian National University, Canberra ACT 0200, Australia 3: Materials and Manufacturing Directorate, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7707; Source Info: 7/23/2007, Vol. 91 Issue 4, p041118; Subject Term: DNA; Subject Term: NUCLEIC acids; Subject Term: MATRICES; Subject Term: SURFACE active agents; Subject Term: HOLOGRAPHY; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.2760169 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26088176&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhuk, H.V. AU - Kobryn, P.A. AU - Semiatin, S.L. T1 - Influence of heating and solidification conditions on the structure and surface quality of electron-beam melted Ti–6Al–4V ingots JO - Journal of Materials Processing Technology JF - Journal of Materials Processing Technology Y1 - 2007/07/23/ VL - 190 IS - 1-3 M3 - Article SP - 387 EP - 392 SN - 09240136 AB - Abstract: Electron-beam cold-hearth melting is an emerging process used to eliminate high- and low-density inclusions during melt processing and to reduce the number of remelting steps for high quality titanium alloys. In the present work, the effect of ingot heating conditions on the evolution of ingot macrostructure and surface quality during solidification following electron-beam melting of Ti–6Al–4V was established via prototype production trials. Macrostructure observations correlated well with temperature gradients and solidification rates estimated from solidification calculations. These calculations also provided insight into the effect of melting conditions on ingot surface quality and hence associated product yield. [Copyright &y& Elsevier] AB - Copyright of Journal of Materials Processing Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLIDIFICATION KW - MELTING points KW - METALLIC composites KW - METAL castings KW - Electron-beam melting KW - Ingot macrostructure KW - Solidification N1 - Accession Number: 25033421; Zhuk, H.V. 1; Email Address: trigubnp@titan-paton.kiev.ua Kobryn, P.A. 2 Semiatin, S.L. 2; Affiliation: 1: E.O. Paton Electric Welding Institute, 11 Bozhenko Str., Kiev 03150, Ukraine 2: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Jul2007, Vol. 190 Issue 1-3, p387; Subject Term: SOLIDIFICATION; Subject Term: MELTING points; Subject Term: METALLIC composites; Subject Term: METAL castings; Author-Supplied Keyword: Electron-beam melting; Author-Supplied Keyword: Ingot macrostructure; Author-Supplied Keyword: Solidification; NAICS/Industry Codes: 331529 Other Nonferrous Metal Foundries (except Die-Casting); Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jmatprotec.2007.03.113 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25033421&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mass, J. AU - Avella, M. AU - Jiménez, J. AU - Callahan, M. AU - Grant, E. AU - Rakes, K. AU - Bliss, D. AU - Wang, B. T1 - Cathodoluminescence study of visible luminescence in hydrothermal ZnO crystals. JO - Applied Physics A: Materials Science & Processing JF - Applied Physics A: Materials Science & Processing Y1 - 2007/07/15/ VL - 88 IS - 1 M3 - Article SP - 95 EP - 98 PB - Springer Science & Business Media B.V. SN - 09478396 AB - We present a study of the visible luminescence in ZnO hydrothermal crystals. The study is carried out on oxygen polarity basal plane (000-1) plates that are sliced through several distinct growth sectors of the crystal. The plates reveal three distinct regions that display differences in the luminescence emission, especially in the visible range. These differences should be related to the variation in the distribution of impurities and native defects in the various growth sectors of hydrothermal ZnO. CL images also expose the presence of nonradiative recombination centers that are associated with point defects or complexes of point defects. CL measurements varying the acceleration voltage of the e-beam reveal that the deep levels responsible for the green luminescence, and in a minor extension those responsible for the yellow-orange luminescence are depleted near the surface. A discussion about the main hypothesis accounting for such behavior is presented. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics A: Materials Science & Processing is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CATHODOLUMINESCENCE KW - LUMINESCENCE KW - ZINC oxide KW - CRYSTAL defects KW - POINT defects KW - IMPURITY centers N1 - Accession Number: 25053414; Mass, J. 1 Avella, M. 1 Jiménez, J. 1; Email Address: jimenez@fmc.uva.es Callahan, M. 2 Grant, E. 2 Rakes, K. 2 Bliss, D. 2 Wang, B. 3; Affiliation: 1: Física de la Materia Condensada , ETSII , 47011 Valladolid Spain 2: Sensors Directorate , Air Force Research Laboratory , Hanscom AFB 01731 USA 3: Solid State Scientific Corp. , Nashua 03049 USA; Source Info: Jul2007, Vol. 88 Issue 1, p95; Subject Term: CATHODOLUMINESCENCE; Subject Term: LUMINESCENCE; Subject Term: ZINC oxide; Subject Term: CRYSTAL defects; Subject Term: POINT defects; Subject Term: IMPURITY centers; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 4p; Illustrations: 2 Diagrams, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1007/s00339-007-3973-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25053414&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Emamipour, Hamidreza AU - Hashisho, Zaher AU - Cevallos, Diego AU - Rood, Mark J. AU - Thurston, Deborah L. AU - Hay, K. James AU - Kim, Byung J. AU - Sullivan, Patrick D. T1 - Steady-State and Dynamic Desorption of Organic Vapor from Activated Carbon with Electrothermal Swing Adsorption. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2007/07/15/ VL - 41 IS - 14 M3 - Article SP - 5063 EP - 5069 SN - 0013936X AB - A new method to achieve steady-state and dynamic-tracking desorption of organic compounds from activated carbon was developed and tested with a bench-scale system. Activated carbon fiber cloth (ACFC) was used to adsorb methyl ethyl ketone (MEK) from air streams. Direct electrothermal heating was then used to desorb the vapor to generate select vapor concentrations at 500 ppmv and 5000 ppmv in air. Dynamic-tracking desorption was also achieved with carefully controlled yet variable vapor concentrations between 250 ppmv and 5000 ppmv, while also allowing the flow rate of the carrier gas to change by 100%. These results were also compared to conditions when recovering MEK as a liquid, and using microwaves as the source of energy to regenerate the adsorbent to provide MEK as a vapor or a liquid. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANIC compounds KW - HEATING KW - ORGANIC chemistry KW - ADSORPTION KW - SEPARATION (Technology) KW - ELECTRON-stimulated desorption KW - THERMAL desorption KW - VAPORS KW - CARBON compounds N1 - Accession Number: 25896913; Emamipour, Hamidreza 1 Hashisho, Zaher 1 Cevallos, Diego 1 Rood, Mark J. 1,2; Email Address: mrood@uiuc.edu Thurston, Deborah L. 1,2 Hay, K. James 3 Kim, Byung J. 3 Sullivan, Patrick D. 4; Affiliation: 1: Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 2: Industrial & Enterprise Systems Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 3: Engineer Research and Development Center, Construction Engineering Research Laboratory, Champaign, Illinois 61826 4: Air Force Research Laboratory/MLQL, 139 Barnes Drive, Suite 2, Tyndall AFB, Florida 32403; Source Info: 7/15/2007, Vol. 41 Issue 14, p5063; Subject Term: ORGANIC compounds; Subject Term: HEATING; Subject Term: ORGANIC chemistry; Subject Term: ADSORPTION; Subject Term: SEPARATION (Technology); Subject Term: ELECTRON-stimulated desorption; Subject Term: THERMAL desorption; Subject Term: VAPORS; Subject Term: CARBON compounds; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 7p; Illustrations: 2 Diagrams, 2 Charts, 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25896913&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fang, Z.-Q. AU - Claflin, B. AU - Look, D. C. AU - Kerr, Lei L. AU - Li, Xiaonan T1 - Electron and hole traps in N-doped ZnO grown on p-type Si by metalorganic chemical vapor deposition. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/07/15/ VL - 102 IS - 2 M3 - Article SP - 023714 PB - American Institute of Physics SN - 00218979 AB - Electron and hole traps in N-doped ZnO were investigated using a structure of n+-ZnO:Al/i-ZnO/ZnO:N grown on a p-Si substrate by metalorganic chemical vapor deposition (for growth of the ZnO:N layer) and sputtering deposition (for growth of the i-ZnO and n+-ZnO:Al layers). Current-voltage and capacitance-voltage characteristics measured at temperatures from 200 to 400 K show that the structure is an abrupt n+-p diode with very low leakage currents. By using deep level transient spectroscopy, two hole traps, H3 (0.35 eV) and H4 (0.48 eV), are found in the p-Si substrate, while one electron trap E3 (0.29 eV) and one hole trap H5 (0.9 eV) are observed in the thin ZnO:N layer. Similarities to traps reported in the literature are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide KW - NITROGEN KW - CHEMICAL vapor deposition KW - ELECTRIC capacity KW - ELECTRIC potential N1 - Accession Number: 26017494; Fang, Z.-Q. 1 Claflin, B. 1 Look, D. C. 1 Kerr, Lei L. 2 Li, Xiaonan 3; Affiliation: 1: Semiconductor Research Center, Wright State University, Dayton, Ohio 45435 and Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 2: Department of Paper and Chemical Engineering, Miami University, Oxford, Ohio 45056 3: National Renewable Energy Laboratory, Golden, Colorado 80401; Source Info: 7/15/2007, Vol. 102 Issue 2, p023714; Subject Term: ZINC oxide; Subject Term: NITROGEN; Subject Term: CHEMICAL vapor deposition; Subject Term: ELECTRIC capacity; Subject Term: ELECTRIC potential; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 5p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1063/1.2759181 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26017494&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kirawanich, Phumin AU - Wilson, Justin R. AU - Yakura, Susumu J. AU - Islam, N. E. T1 - A generic topological simulation scheme for studying aperture electromagnetic field interactions and cable couplings. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/07/15/ VL - 102 IS - 2 M3 - Article SP - 024902 PB - American Institute of Physics SN - 00218979 AB - A modified electromagnetic topology (EMT) simulation scheme for the interactions of an electromagnetic wave with an aperture and with cables of an electrical system beyond the aperture is described. The modified EMT simulation scheme addresses a concept in dealing with an aperture node of the topological circuitry without having to specify the details of the entire electrical circuitry. The results of the modified EMT simulation scheme have been validated through experiments for aperture/wave interactions and the induced currents on the cable near the aperture. The aperture transfer functions, obtained for both the simulation and experimental cases, have shown the characteristic response similar to that of the high-pass filter with a cutoff frequency. The simulated and measured currents on a cable, placed behind the aperture, resulted in good agreement with each other, providing the good validation of the modified EMT simulation scheme. Under this scheme, any change in topological circuitry can be handled easily in the substructural levels without having to consider an entire system. Consequently, the effects of various types of aperture interactions on the entire system can be reinvestigated via simply remodeling of topological interaction nodes in substructural levels. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETISM KW - SIMULATION methods & models KW - ELECTROMAGNETIC waves KW - TRANSFER functions (Mathematics) KW - HOLES KW - SUBSTRUCTURING techniques KW - TOPOLOGY N1 - Accession Number: 26017579; Kirawanich, Phumin 1 Wilson, Justin R. 1 Yakura, Susumu J. 2 Islam, N. E. 1; Affiliation: 1: Department of Electrical and Computer Engineering, University of Missouri, Columbia, Missouri 65211 2: Air Force Research Laboratory, Directed Energy Directorate, AFRL/DEHE, Kirtland Air Force Base (AFB), New Mexico 87117; Source Info: 7/15/2007, Vol. 102 Issue 2, p024902; Subject Term: ELECTROMAGNETISM; Subject Term: SIMULATION methods & models; Subject Term: ELECTROMAGNETIC waves; Subject Term: TRANSFER functions (Mathematics); Subject Term: HOLES; Subject Term: SUBSTRUCTURING techniques; Subject Term: TOPOLOGY; Number of Pages: 8p; Illustrations: 7 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.2753708 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26017579&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patton, Steven T. AU - Eapen, Kalathil C. AU - Zabinski, Jeffrey S. AU - Sanders, Jeffrey H. AU - Voevodin, Andrey A. T1 - Lubrication of microelectromechanical systems radio frequency switch contacts using self-assembled monolayers. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/07/15/ VL - 102 IS - 2 M3 - Article SP - 024903 PB - American Institute of Physics SN - 00218979 AB - Contact failures in microelectromechanical systems (MEMS) switches prevent widespread use of MEMS technology for current handling in miniature devices. A self-assembled monolayer (SAM) lubricant was applied to MEMS switch surfaces in this paper as a possible approach for preventing contact failure. Chemical and physical processes on SAM lubricated contact surfaces were investigated at low (10 μA) and high (1 mA) current using a micro/nanoadhesion apparatus as a switch simulator with in situ monitoring of contact resistance and adhesion force. This was coupled with ex situ analytical analyses of the contacts using x-ray photoelectron spectroscopy (XPS) and micro-Raman techniques. Diphenyl disulfide was chosen as a lubricant due to its thermal stability, enhanced conductivity, and its ability to form a 3.4 Å thick SAM on the gold electrode surface. Hot switching experiments were conducted in humid air (45% RH) and dry nitrogen using a MEMS-scale contact force of 200 μN and 5 Hz frequency. At low current, lubricated contacts failed by growth in both adhesion and contact resistance (R) at about 105 cycles. A multi-step degradation mechanism was suggested which includes (1) SAM debonding under electron flow with formation of charged molecular species and dipole molecular structures, (2) migration and trapping of charged molecular species and/or molecular dipoles in the contact zone, (3) decomposition of molecular structures under Joule heating and repeated mechanical impact, and (4) increased R due to carbonaceous film formation that further accelerates thermal decomposition of the SAM. At high current, switch contacts failed immediately due to SAM thermal decomposition. Failure mechanisms and durability were similar in either air or dry nitrogen, indicating a minimum influence of the environment chemistry on the contact processes. This study establishes degradation mechanisms of SAM based lubricants in MEMS electrical contacts and results can be used in designing contact switch lubrication materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTROMECHANICAL systems KW - LUBRICATION & lubricants KW - MONOMOLECULAR films KW - MOLECULAR self-assembly KW - X-ray photoelectron spectroscopy KW - RAMAN spectroscopy KW - ELECTRON mobility N1 - Accession Number: 26017574; Patton, Steven T. 1 Eapen, Kalathil C. 1 Zabinski, Jeffrey S. 2 Sanders, Jeffrey H. 2 Voevodin, Andrey A. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469-0168 2: Materials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7750; Source Info: 7/15/2007, Vol. 102 Issue 2, p024903; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: LUBRICATION & lubricants; Subject Term: MONOMOLECULAR films; Subject Term: MOLECULAR self-assembly; Subject Term: X-ray photoelectron spectroscopy; Subject Term: RAMAN spectroscopy; Subject Term: ELECTRON mobility; NAICS/Industry Codes: 324191 Petroleum Lubricating Oil and Grease Manufacturing; Number of Pages: 5p; Illustrations: 3 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.2753594 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26017574&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tautz, Maurice AU - Lai, Shu T. T1 - Charging of fast spinning spheroidal satellites in sunlight. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/07/15/ VL - 102 IS - 2 M3 - Article SP - 024905 PB - American Institute of Physics SN - 00218979 AB - We present models for a fast spinning, dielectric coated, spheroidal (prolate or oblate) spacecraft charging in sunlight. This work is a generalization of previous treatments of sunlight charging of spherical satellites. The main difference is that the spacecraft geometry can be characterized by a shape parameter that sets the aspect ratio of the spheroids. The models are based on an expansion of the Laplacian potentials external to the spacecraft surface in terms of products of standard Legendre polynomials, describing the polar angle dependence, and modified Legendre functions of the second kind, representing the “radial” behavior. The potential distributions are discussed relative to the corresponding monopole-dipole and monopole-quadrupole configurations in spherical geometry. A Taylor expansion is developed for the potentials when the shape parameter is large (the spherical limit) and expressions are also given in the opposite limit, when the shape parameter goes to zero. As in the spherical case, the potentials produce photosheath barriers which act to block escaping photoelectrons and lead to current balance, allowing sunlight charging to high negative levels. The sheath barrier location and height are calculated numerically, for a wide range of shape parameters. Contour plots are given to depict the potential distributions for sunlight charging of prolate and oblate spheroids at a representative aspect ratio. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUNSHINE KW - SPACE vehicles KW - ASTRONAUTICS KW - ARTIFICIAL satellites KW - ELECTRIC meters N1 - Accession Number: 26017551; Tautz, Maurice 1 Lai, Shu T. 2; Affiliation: 1: Atmospheric and Environmental Research/Radex Inc., Lexington, Massachusetts 01730, USA 2: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731, USA; Source Info: 7/15/2007, Vol. 102 Issue 2, p024905; Subject Term: SUNSHINE; Subject Term: SPACE vehicles; Subject Term: ASTRONAUTICS; Subject Term: ARTIFICIAL satellites; Subject Term: ELECTRIC meters; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 334514 Totalizing Fluid Meter and Counting Device Manufacturing; NAICS/Industry Codes: 334515 Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 10p; Illustrations: 4 Color Photographs, 7 Graphs; Document Type: Article L3 - 10.1063/1.2756076 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26017551&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Burke, William J. T1 - Penetration electric fields: A Volland–Stern approach JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2007/07/15/ VL - 69 IS - 10/11 M3 - Article SP - 1114 EP - 1126 SN - 13646826 AB - Abstract: This paper reformulates the Volland–Stern model, separating contributions from corotation and convection to predict electric field penetration of the inner magnetosphere using data from the Advanced Composition Explorer (ACE) satellite. In the absence of shielding, the model electric field is E VS=Φ PC/2L Y R E, where Φ PC is the polar cap potential and 2L Y R E is the width of the magnetosphere along the dawn–dusk meridian. Φ PC is estimated from the interplanetary electric field (IEF) and the dynamic pressure of the solar wind (P SW); values of L Y were approximated using P SW and simple force-balance considerations. ACE measurements on 16–17 April 2002 were then used to calculate E VS for comparison with the eastward electric field component (E Jφ ) detected by the incoherent scatter radar at Jicamarca, Peru. While the interplanetary magnetic field (IMF) was southward, the model predicted observed ratios of E VS/IEF. During intervals of northward IMF, EJφ turned westward suggesting that a northward IMF B Z system of field-aligned currents affected the electrodynamics of the dayside ionosphere on rapid time scales. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC fields KW - SOLAR wind KW - MAGNETOSPHERE KW - SOLAR activity KW - Forcasting KW - Magnetic storms KW - Magnetospheric electric fields KW - Polar cap potential prediction KW - Solar wind–magnetosphere coupling KW - Solar wind–magnetosphere coupling, Forcasting N1 - Accession Number: 25768914; Burke, William J. 1; Email Address: William.Burke2@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory Space Vehicles Directorate, Hanscom AFB, MA 01731-3010, USA; Source Info: Jul2007, Vol. 69 Issue 10/11, p1114; Subject Term: ELECTRIC fields; Subject Term: SOLAR wind; Subject Term: MAGNETOSPHERE; Subject Term: SOLAR activity; Author-Supplied Keyword: Forcasting; Author-Supplied Keyword: Magnetic storms; Author-Supplied Keyword: Magnetospheric electric fields; Author-Supplied Keyword: Polar cap potential prediction; Author-Supplied Keyword: Solar wind–magnetosphere coupling; Author-Supplied Keyword: Solar wind–magnetosphere coupling, Forcasting; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.jastp.2006.09.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25768914&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rothwell, P.L. AU - Jasperse, J.R. T1 - A coupled solar wind-magnetosphere–ionosphere model for determining the ionospheric penetration electric field JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2007/07/15/ VL - 69 IS - 10/11 M3 - Article SP - 1127 EP - 1134 SN - 13646826 AB - Abstract: The transpolar potential Φpc may be estimated from the solar wind as measured by the advanced composition explorer (ACE) satellite at the first Lagrangian point L1. In our model, the transpolar potential drives the region-1 (J1) currents through the ionosphere consistent with a solar-dependent ionospheric conductance. It is shown that the ionospheric potential may be derived from an equivalent Poisson equation, the solution of which gives the global distribution of the ionospheric electric field, including the penetration electric field near the equator. This eastward penetration electric field just past sunset, which is created by J1, is offset by a region-2 (J2) generated westward (shielding) electric field with an unknown rise time. We find that there is a correlation between storm-time potential enhancements and the presence of equatorial bubbles as measured on DMSP satellites. The magnetic storms of 6–7 April 2000 and 20–21 November 2003 are analyzed. In both cases, the observed presence of equatorial plasma bubbles showed better agreement with model predictions using a longer J2 rise time, consistent with Huang et al. [Huang, C.-S., Foster, J., Kelley, M.C., 2005. Long-duration penetration of the interplanetary electric field to the low-latitude ionosphere during the main phase of magnetic storms. Journal of Geophysical Research 110(A11309), doi:10.1029/2005JA011202]. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR wind KW - MAGNETOSPHERE KW - ELECTRIC fields KW - ELECTROMAGNETIC shielding KW - Penetration electric fields KW - Plasma bubbles KW - Shielding KW - Solar wind N1 - Accession Number: 25768915; Rothwell, P.L.; Email Address: paul.rothwell@hanscom.af.mil Jasperse, J.R. 1; Email Address: john.jasperse@hanscom.af.mil; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, 29 Randolph Rd., Bedford, MA 01731, USA; Source Info: Jul2007, Vol. 69 Issue 10/11, p1127; Subject Term: SOLAR wind; Subject Term: MAGNETOSPHERE; Subject Term: ELECTRIC fields; Subject Term: ELECTROMAGNETIC shielding; Author-Supplied Keyword: Penetration electric fields; Author-Supplied Keyword: Plasma bubbles; Author-Supplied Keyword: Shielding; Author-Supplied Keyword: Solar wind; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jastp.2006.08.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25768915&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bruntt, H. AU - Stello, D. AU - Suárez, J. C. AU - Arentoft, T. AU - Bedding, T. R. AU - Bouzid, M. Y. AU - Csubry, Z. AU - Dall, T. H. AU - Dind, Z. E. AU - Frandsen, S. AU - Gilliland, R. L. AU - Jacob, A. P. AU - Jensen, H. R. AU - Kang, Y. B. AU - Kim, S.-L. AU - Kiss, L. L. AU - Kjeldsen, H. AU - Koo, J.-R. AU - Lee, J.-A. AU - Lee, C.-U. T1 - Multisite campaign on the open cluster M67 – III. δ Scuti pulsations in the blue stragglers. JO - Monthly Notices of the Royal Astronomical Society JF - Monthly Notices of the Royal Astronomical Society Y1 - 2007/07/11/ VL - 378 IS - 4 M3 - Article SP - 1371 EP - 1384 PB - Oxford University Press / USA SN - 00358711 AB - We have made an asteroseismic analysis of the variable blue stragglers in the open cluster M67. The data set consists of photometric time-series from eight sites using nine 0.6–2.1 m telescopes with a time-baseline of 43 d. In two stars, EW Cnc and EX Cnc, we detect the highest number of frequencies (41 and 26) detected in δ Scuti stars belonging to a stellar cluster, and EW Cnc has the second highest number of frequencies detected in any δ Scuti star. We have computed a grid of pulsation models that take the effects of rotation into account. The distribution of observed and theoretical frequencies shows that in a wide frequency range a significant fraction of the radial and non-radial low-degree modes are excited to detectable amplitudes. Despite the large number of observed frequencies we cannot constrain the fundamental parameters of the stars. To make progress we need to identify the degrees of some of the modes from either multicolour photometry or spectroscopy. [ABSTRACT FROM AUTHOR] AB - Copyright of Monthly Notices of the Royal Astronomical Society is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BLUE stragglers (Stars) KW - STARS -- Open clusters KW - ASTRONOMICAL photometry KW - ASTRONOMICAL spectroscopy KW - STELLAR oscillations KW - ä Scuti KW - δ Scuti KW - blue stragglers KW - open clusters and associations: individual: M67 (NGC 2682) KW - stars: individual: EW Cnc KW - stars: individual: EX Cnc N1 - Accession Number: 25586955; Bruntt, H. 1; Email Address: bruntt@physics.usyd.edu.au Stello, D. 1,2,3 Suárez, J. C. 4,5 Arentoft, T. 2,6 Bedding, T. R. 1 Bouzid, M. Y. 7 Csubry, Z. 8 Dall, T. H. 9,10 Dind, Z. E. 1 Frandsen, S. 2,6 Gilliland, R. L. 11 Jacob, A. P. 1 Jensen, H. R. 2 Kang, Y. B. 12 Kim, S.-L. 13 Kiss, L. L. 1 Kjeldsen, H. 2,6 Koo, J.-R. 12 Lee, J.-A. 13 Lee, C.-U. 13; Affiliation: 1: School of Physics, University of Sydney, NSW 2006, Australia 2: Institut for Fysik og Astronomi (IFA), University of Aarhus, DK-8000 Aarhus, Denmark 3: Department of Physics, US Air Force Academy, Colorado Springs, CO 80840, USA 4: Instituto de Astrofísica de Andalucía, CSIC, CP3004 Granada, Spain 5: Observatoire de Paris, LESIA, UMR 8109, Meudon, France 6: Danish AsteroSeismology Centre, University of Aarhus, DK-8000 Aarhus, Denmark 7: Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium 8: Konkoly Observatory of the Hungarian Academy of Sciences, H-1525 Budapest, PO Box 67, Hungary 9: Gemini Observatory, 670 N. A'ohoku Pl., Hilo, HI 96720, USA 10: European Southern Observatory, Casilla 19001, Santiago 19, Chile 11: Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, USA 12: Department of Astronomy and Space Science, Chungnam National University, Daejeon 305-764, Korea 13: Korea Astronomy and Space Science Institute, Daejeon 305-348, Korea; Source Info: 7/11/2007, Vol. 378 Issue 4, p1371; Subject Term: BLUE stragglers (Stars); Subject Term: STARS -- Open clusters; Subject Term: ASTRONOMICAL photometry; Subject Term: ASTRONOMICAL spectroscopy; Subject Term: STELLAR oscillations; Author-Supplied Keyword: ä Scuti; Author-Supplied Keyword: δ Scuti; Author-Supplied Keyword: blue stragglers; Author-Supplied Keyword: open clusters and associations: individual: M67 (NGC 2682); Author-Supplied Keyword: stars: individual: EW Cnc; Author-Supplied Keyword: stars: individual: EX Cnc; Number of Pages: 14p; Illustrations: 6 Charts, 14 Graphs; Document Type: Article L3 - 10.1111/j.1365-2966.2007.11865.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25586955&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buryachenko, V. AU - Kushch, V. AU - Roy, A. T1 - Effective thermoelastic properties of random structure composites reinforced by the clusters of deterministic structure (application to clay nanocomposites). JO - Acta Mechanica JF - Acta Mechanica Y1 - 2007/07// VL - 192 IS - 1-4 M3 - Article SP - 135 EP - 167 PB - Springer Science & Business Media B.V. SN - 00015970 AB - Polymer/clay nanocomposites consisting of an epoxy matrix reinforced by silicate clay plates have been observed to exhibit enhanced mechanical properties at low volume fraction of clay. The matrix and embedded nanoelements are modeled in the framework of continuum mechanics with known mechanical properties previously evaluated by, e.g., molecular dynamic simulation. Nanoclay composite is modeled by the aligned, uniformly distributed in the matrix stacks of parallel clay sheets separated from one another by interlayer matrix galleries of nanometer scale. Interaction of a finite number of oblate spheroidal inclusions modeling an individual stack inside the infinite matrix is carried by the multipole expansion technique. The obtained accurate numerical solution was incorporated into the multiparticle effective field method [5] for the estimation of effective thermoelastic properties. Detailed parametric analyses demonstrate the influence on the effective elastic moduli and stress concentrator factors of such key factors as the shape of nanoelements, interlayer distance, and the number of nanoelements in the stacks of deterministic structure. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Mechanica is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOELASTICITY KW - COMPOSITE materials KW - POLYMERS KW - CLAY KW - MATRICES KW - CONTINUUM mechanics KW - NANOSTRUCTURED materials N1 - Accession Number: 26034926; Buryachenko, V. 1; Email Address: Valeriy.Buryach@aol.com Kushch, V. 2 Roy, A. 3; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469-0168, U.S.A. 2: Institute for Superhard Materials of the National Academy of Sciences, 04074 Kiev, Ukraine 3: Air Force Research Laboratory, AFRL/MLBC, WPAFB, OH 45433-7750, U.S.A.; Source Info: Jul2007, Vol. 192 Issue 1-4, p135; Subject Term: THERMOELASTICITY; Subject Term: COMPOSITE materials; Subject Term: POLYMERS; Subject Term: CLAY; Subject Term: MATRICES; Subject Term: CONTINUUM mechanics; Subject Term: NANOSTRUCTURED materials; NAICS/Industry Codes: 212326 Shale, clay and refractory mineral mining and quarrying; NAICS/Industry Codes: 212324 Kaolin and Ball Clay Mining; Number of Pages: 33p; Illustrations: 1 Diagram, 13 Graphs; Document Type: Article L3 - 10.1007/s00707-006-0421-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26034926&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kosch, M.J. AU - Pedersen, T. AU - Rietveld, M.T. AU - Gustavsson, B. AU - Grach, S.M. AU - Hagfors, T. T1 - Artificial optical emissions in the high-latitude thermosphere induced by powerful radio waves: An observational review JO - Advances in Space Research JF - Advances in Space Research Y1 - 2007/07// VL - 40 IS - 3 M3 - Article SP - 365 EP - 376 SN - 02731177 AB - Abstract: High-power high-frequency radio waves beamed into the ionosphere with O-mode polarization cause plasma turbulence, which can accelerate electrons. These electrons collide with the F-layer neutrals causing artificial optical emissions identical to the natural aurora. The brightest optical emissions are O(1D) 630 nm, with a threshold of ∼2 eV, and O(1S) 557.7 nm, with a threshold of ∼4.2 eV. The optical emissions give direct evidence of electron acceleration by plasma turbulence, the non-Maxwellian electron energy spectrum as well as the morphology of the accelerating region with high spatial resolution. HF pumping of the ionosphere also causes bulk electron temperature enhancements, but these alone are not sufficient to explain the optical emissions. We review the published radar and optical observations of high-latitude pump-induced artificial optical emissions and introduce new data. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO waves KW - IONOSPHERE KW - PLASMA turbulence KW - ELECTRONS KW - Artificial optical emissions KW - Ionospheric modification KW - Wave–plasma turbulence N1 - Accession Number: 26040253; Kosch, M.J. 1,2,3; Email Address: m.kosch@lancaster.ac.uk Pedersen, T. 1 Rietveld, M.T. 4 Gustavsson, B. 5 Grach, S.M. 6,7 Hagfors, T. 8; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA 2: Communication Systems, Lancaster University, Lancaster LA1 4WA, UK 3: Honorary Research Fellow, University of Kwazulu-Natal, Durban 4001, South Africa 4: EISCAT Scientific Association, 9027 Ramfjordbotn, Norway 5: Department of Physics, University of Tromsø, 9037 Tromsø, Norway 6: Radiophysical Institute, Nizhny Novgorod 603950, Russia 7: Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod 603950, Russia 8: Max Planck Institute for Solar System Research, 37191 Katlenburg-Lindau, Germany; Source Info: Jul2007, Vol. 40 Issue 3, p365; Subject Term: RADIO waves; Subject Term: IONOSPHERE; Subject Term: PLASMA turbulence; Subject Term: ELECTRONS; Author-Supplied Keyword: Artificial optical emissions; Author-Supplied Keyword: Ionospheric modification; Author-Supplied Keyword: Wave–plasma turbulence; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.asr.2007.02.061 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26040253&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Torvik, Peter J. AU - Runyon, Brian D. T1 - Estimating the Loss Factors of Plates with Constrained Layer Damping Treatments. JO - AIAA Journal JF - AIAA Journal Y1 - 2007/07// VL - 45 IS - 7 M3 - Article SP - 1492 EP - 1492 SN - 00011452 AB - A method is developed and validated for the determination of approximate values of loss factors and frequencies of rectangular plates with general boundary conditions, fully covered on one side with a constrained layer damping treatment. The method, referred to as the method of equivalent lengths, is an extension for use on plates of the commonly used practice, through eigenvalue replacement, of applying the Ross, Ungar, and Kerwin analysis to the prediction of loss factors for beams with other than simply supported ends. Application of the method requires only that the modulus, thickness, and density of the substrate, constraining layer, and shear layer be known, as well as either the eigenvalue or natural frequency for the plate of aspect ratio and boundary condition to which the constrained layer treatment is to be applied. Predictions of the method are compared with results obtained by finite element methods for plates with various boundary conditions, including those with zero, one, two, three, and four free edges. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLATES (Engineering) KW - DAMPING (Mechanics) KW - EIGENVALUES KW - GIRDERS KW - FINITE element method N1 - Accession Number: 25772917; Torvik, Peter J. 1 Runyon, Brian D. 2; Affiliation: 1: Air Force Institute of Technology, Xenia, Ohio 45385 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jul2007, Vol. 45 Issue 7, p1492; Subject Term: PLATES (Engineering); Subject Term: DAMPING (Mechanics); Subject Term: EIGENVALUES; Subject Term: GIRDERS; Subject Term: FINITE element method; NAICS/Industry Codes: 332313 Plate Work Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.2514/1.24505 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25772917&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Luckarift, Heather R. AU - Balasubramanian, Shankar AU - Paliwal, Sheetal AU - Johnson, Glenn R. AU - Simonian, Aleksandr L. T1 - Enzyme-encapsulated silica monolayers for rapid functionalization of a gold surface JO - Colloids & Surfaces B: Biointerfaces JF - Colloids & Surfaces B: Biointerfaces Y1 - 2007/07// VL - 58 IS - 1 M3 - Article SP - 28 EP - 33 SN - 09277765 AB - Abstract: We report a simple and rapid method for the deposition of amorphous silica onto a gold surface. The method is based on the ability of lysozyme to mediate the formation of silica nanoparticles. A monolayer of lysozyme is deposited via non-specific binding to gold. The lysozyme then mediates the self-assembled formation of a silica monolayer. The silica formation described herein occurs on a surface plasmon resonance (SPR) gold surface and is characterized by SPR spectroscopy. The silica layer significantly increases the surface area compared to the gold substrate and is directly compatible with a detection system. The maximum surface concentration of lysozyme was found to be a monolayer of 2.6ng/mm2 which allowed the deposition of a silica layer of a further 2ng/mm2. For additional surface functionalization, the silica was also demonstrated to be a suitable matrix for immobilization of biomolecules. The encapsulation of organophosphate hydrolase (OPH) was demonstrated as a model system. The silica forms at ambient conditions in a reaction that allows the encapsulation of enzymes directly during silica formation. OPH was successfully encapsulated within the silica particles and a detection limit for the substrate, paraoxon, using the surface-encapsulated enzyme was found to be 20μM. [Copyright &y& Elsevier] AB - Copyright of Colloids & Surfaces B: Biointerfaces is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON compounds KW - OXIDES KW - ALKALINE earth oxides KW - RESONANCE KW - Enzyme immobilization KW - Organophosphate hydrolase KW - Paraoxon KW - Silica KW - Surface plasmon resonance N1 - Accession Number: 25185511; Luckarift, Heather R. 1 Balasubramanian, Shankar 2 Paliwal, Sheetal 2 Johnson, Glenn R. 1 Simonian, Aleksandr L. 2; Email Address: simonal@eng.auburn.edu; Affiliation: 1: Air Force Research Laboratory, 139 Barnes Drive, Suite # 2, Tyndall AFB, FL 32403, United States 2: Materials Research and Education Center, Samuel Ginn College of Engineering, Auburn University, 275 Wilmore, Auburn, AL 36489, United States; Source Info: Jul2007, Vol. 58 Issue 1, p28; Subject Term: SILICON compounds; Subject Term: OXIDES; Subject Term: ALKALINE earth oxides; Subject Term: RESONANCE; Author-Supplied Keyword: Enzyme immobilization; Author-Supplied Keyword: Organophosphate hydrolase; Author-Supplied Keyword: Paraoxon; Author-Supplied Keyword: Silica; Author-Supplied Keyword: Surface plasmon resonance; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.colsurfb.2006.08.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25185511&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kwang June Sohn AU - Hongbin Li AU - Himed, Braham T1 - Parametric Rao Test for Multichannel Adaptive Signal Detection. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2007/07// VL - 43 IS - 3 M3 - Article SP - 920 EP - 933 SN - 00189251 AB - The parametric Rao test for a multichannel adaptive signal detection problem is derived by modeling the disturbance signal as a multichannel autoregressive (AR) process. Interestingly, the parametric Rao test takes a form identical to that of the recently introduced parametric adaptive matched filter (PAMF) detector for space-time adaptive processing (STAP) in airborne surveillance radar systems and other similar applications. The equivalence offers new insights into the performance and implementation of the PAMF detector. Specifically, the Rao/PAMF detector is asymptotically (for large samples) a parametric generalized likelihood ratio test (GLRT), due to an asymptotic equivalence between the Rao test and the GLRT. The asymptotic distribution of the Rao test statistic is obtained in closed form, which follows an exponential distribution under the null hypothesis H0 and, respectively, a noncentral Chi-squared distribution with two degrees of freedom under the alternative hypothesis H1. The noncentrality parameter of the noncentral Chi-squared distribution is determined by the output signal-to-interference-plus-noise ratio (SINR) of a temporal whitening filter. Since the asymptotic distribution under H0 is independent of the unknown parameters, the Rao/PAMF asymptotically achieves constant false alarm rate (CFAR). Numerical results show that these results are accurate in predicting the performance of the parametric Rao/PAMF detector even with moderate data support. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIGNAL detection KW - SIGNAL theory (Telecommunication) KW - MULTICHANNEL communication KW - SIGNAL processing KW - ELECTRONIC systems KW - INFORMATION measurement N1 - Accession Number: 27692710; Kwang June Sohn 1 Hongbin Li 1; Email Address: hli@stevens.edu Himed, Braham 2; Affiliation: 1: Stevens Institute of Technology 2: Air Force Research Laboratory; Source Info: Jul2007, Vol. 43 Issue 3, p920; Subject Term: SIGNAL detection; Subject Term: SIGNAL theory (Telecommunication); Subject Term: MULTICHANNEL communication; Subject Term: SIGNAL processing; Subject Term: ELECTRONIC systems; Subject Term: INFORMATION measurement; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; Number of Pages: 14p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27692710&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Santos, Ernesto L. AU - Zoltowski, Michael D. AU - Rangaswamy, Muralidhar T1 - Indirect Dominant Mode Rejection: A Solution to Low Sample Support Beamforming. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing Y1 - 2007/07//Jul2007 Part 1 VL - 55 IS - 7 M3 - Article SP - 3283 EP - 3293 SN - 1053587X AB - Under conditions of low sample support, a low-rank solution of the minimum variance distortionless response (MVDR) equations can yield a higher output signal-to-interference-plus-noise ratio (SINR) than the full-rank MVDR beamformer. In this paper, we investigate several low-rank beamforming techniques, and we also propose a new beamformer that we refer to as the indirect dominant mode rejection (IDMR). We analyze the degradation in the output SINR caused by residual cross correlations embedded in the sampled covariance matrix due to low sample support. The IDMR beamformer is based on a parametric estimate of the covariance matrix, in which any cross correlation is canceled out. Simulations reveal that the IDMR beamformer yields a dramatic improvement in output SINR relative to the conjugate gradient (CG), principal component inverse (PCI), and dominant mode rejection (DMR) beamformers. In our investigation of the low-rank CG beamformer, we address the issue of whether the unity gain constraint in the look direction should be enforced a priori via the use of a blocking matrix or effected a posteriori through simple scaling of the beamforming vector. Remarkably, it is proven that the two methods yield exactly the same low-rank beamformer at each and every rank. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATRICES KW - VARIANCES KW - SIGNAL-to-noise ratio KW - COMPUTER simulation KW - CORRELATION (Statistics) KW - EQUATIONS KW - Blocking matrix KW - conjugate gradient beamformer KW - dominant mode rejection (DMR) beamformer KW - indirect dominant mode rejection (IDMR) beamformer KW - low sample support beam- forming KW - minimum variance distortionless (MVDR) beamformer KW - robust adaptive beamforming N1 - Accession Number: 25575742; Santos, Ernesto L. 1; Email Address: santose@ecn.purdue.edu Zoltowski, Michael D. 1; Email Address: mikedz@ecn.purdue.edu Rangaswamy, Muralidhar 2; Email Address: muralidhar.rangaswamy@hanscom.af.mil; Affiliation: 1: School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907 USA 2: Air Force Research Laboratory/SNHE, Hascom Air Force Base, MA 01731-2909 USA; Source Info: Jul2007 Part 1, Vol. 55 Issue 7, p3283; Subject Term: MATRICES; Subject Term: VARIANCES; Subject Term: SIGNAL-to-noise ratio; Subject Term: COMPUTER simulation; Subject Term: CORRELATION (Statistics); Subject Term: EQUATIONS; Author-Supplied Keyword: Blocking matrix; Author-Supplied Keyword: conjugate gradient beamformer; Author-Supplied Keyword: dominant mode rejection (DMR) beamformer; Author-Supplied Keyword: indirect dominant mode rejection (IDMR) beamformer; Author-Supplied Keyword: low sample support beam- forming; Author-Supplied Keyword: minimum variance distortionless (MVDR) beamformer; Author-Supplied Keyword: robust adaptive beamforming; Number of Pages: 11p; Illustrations: 3 Black and White Photographs, 1 Chart, 6 Graphs; Document Type: Article L3 - 10.1109/TSP.2007.893926 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25575742&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hai Deng AU - Himed, Braham AU - Wicks, Michael C. T1 - Concurrent Extraction of Target Range and Doppler Information by Using Orthogonal Coding Waveforms. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing Y1 - 2007/07//Jul2007 Part 1 VL - 55 IS - 7 M3 - Article SP - 3294 EP - 3301 SN - 1053587X AB - In this paper, a novel approach for concurrent extraction of target range and Doppler information in radar systems is introduced. A pair of orthogonal waveforms with different pulse repetition frequencies (PRF) are bundled and transmitted as a single hybrid radar waveform for target measurement. At the receiver, two orthogonal signal processing channels consisting of a low PRF (LPRF) channel and a high PRF (HPRF) one, perform the extraction of target range and Doppler information, respectively. The CLEAN algorithm is innovatively used to suppress the interference from the cross-correlation residues and the autocorrelation side-lobe in the LPRF channel. The processing results, based on the proposed signal processing approach, demonstrate the technical feasibility of implementing such a signal processing scheme in radar systems. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DOPPLER radar KW - SIGNAL processing KW - DETECTORS KW - RADAR KW - ELECTRONIC systems KW - Pulse Doppler radar KW - radar measurements KW - radar signal processing KW - waveform design N1 - Accession Number: 25575743; Hai Deng 1; Email Address: hai@unt.edu Himed, Braham 2 Wicks, Michael C. 3; Affiliation: 1: Department of Electrical Engineering, The University of North Texas, Denton, TX 76203 USA 2: Signal Laboratories, Reston, VA 20191 USA 3: U.S. Air Force Research Laboratory, Rome, NY 13441 USA; Source Info: Jul2007 Part 1, Vol. 55 Issue 7, p3294; Subject Term: DOPPLER radar; Subject Term: SIGNAL processing; Subject Term: DETECTORS; Subject Term: RADAR; Subject Term: ELECTRONIC systems; Author-Supplied Keyword: Pulse Doppler radar; Author-Supplied Keyword: radar measurements; Author-Supplied Keyword: radar signal processing; Author-Supplied Keyword: waveform design; Number of Pages: 8p; Illustrations: 3 Black and White Photographs, 10 Graphs; Document Type: Article L3 - 10.1109/TSP.2007.894397 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25575743&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Deming, Ross W. AU - Perlovsky, Leonid I. T1 - Concurrent multi-target localization, data association, and navigation for a swarm of flying sensors JO - Information Fusion JF - Information Fusion Y1 - 2007/07// VL - 8 IS - 3 M3 - Article SP - 316 EP - 330 SN - 15662535 AB - Abstract: We are developing a probabilistic technique for performing multiple target detection and localization based on data from a swarm of flying sensors, for example to be mounted on a group of micro-UAVs (unmanned aerial vehicles). Swarms of sensors can facilitate detecting and discriminating low signal-to-clutter targets by allowing correlation between different sensor types and/or different aspect angles. However, for deployment of swarms to be feasible, UAVs must operate more autonomously. The current approach is designed to reduce the load on humans controlling UAVs by providing computerized interpretation of a set of images from multiple sensors. We consider a complex case in which target detection and localization are performed concurrently with sensor fusion, multi-target signature association, and improved UAV navigation. This method yields the bonus feature of estimating precise tracks for UAVs, which may be applicable for automatic collision avoidance. We cast the problem in a probabilistic framework known as modeling field theory (MFT), in which the pdf of the data is composed of a mixture of components, each conditional upon parameters including target positions as well as sensor kinematics. The most likely set of parameters is found by maximizing the log-likelihood function using an iterative approach related to expectation-maximization. In terms of computational complexity, this approach scales linearly with number of targets and sensors, which represents an improvement over most existing methods. Also, since data association is treated probabilistically, this method is not prone to catastrophic failure if data association is incorrect. Results from computer simulations are described which quantitatively show the advantages of increasing the number of sensors in the swarm, both in terms of clutter suppression and more accurate target localization. [Copyright &y& Elsevier] AB - Copyright of Information Fusion is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DETECTORS KW - SIMULATION methods & models KW - COMPUTATIONAL complexity KW - ELECTRONIC data processing KW - Concurrent data association and tracking KW - Dynamic logic KW - Expectation-maximization KW - Maximum-likelihood KW - Mixture model KW - Photogrammetry KW - Sensor fusion KW - Unmanned aerial vehicles N1 - Accession Number: 24545759; Deming, Ross W.; Email Address: ross.deming@hanscom.af.mil Perlovsky, Leonid I. 1; Affiliation: 1: Air Force Research Laboratory, SNHE, 80 Scott Drive, Hanscom AFB, MA 01731, USA; Source Info: Jul2007, Vol. 8 Issue 3, p316; Subject Term: DETECTORS; Subject Term: SIMULATION methods & models; Subject Term: COMPUTATIONAL complexity; Subject Term: ELECTRONIC data processing; Author-Supplied Keyword: Concurrent data association and tracking; Author-Supplied Keyword: Dynamic logic; Author-Supplied Keyword: Expectation-maximization; Author-Supplied Keyword: Maximum-likelihood; Author-Supplied Keyword: Mixture model; Author-Supplied Keyword: Photogrammetry; Author-Supplied Keyword: Sensor fusion; Author-Supplied Keyword: Unmanned aerial vehicles; NAICS/Industry Codes: 518210 Data Processing, Hosting, and Related Services; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.inffus.2005.11.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24545759&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bhattacharjee, Sudip AU - Zhang, Hong AU - Ramesh, R. AU - Andrews, Dee H. T1 - A Decomposition and Guided Simulation Methodology for Large-Scale System Design: A Study in QoS-Capable Intranets with Fixed and Mobile Components. JO - INFORMS Journal on Computing JF - INFORMS Journal on Computing Y1 - 2007///Summer2007 VL - 19 IS - 3 M3 - Article SP - 429 EP - 442 PB - INFORMS: Institute for Operations Research SN - 10919856 AB - Integrated design of a large-scale distributed system is challenging due to multiple conflicting design objectives, a large number of stochastic parameters, and a combinatorially large design space. Current approaches using decomposition and analysis of isolated subproblems could lead to suboptimization. We develop a framework for integrated design that combines analytical modeling with embedded simulations for large-scale infrastructure planning. The framework uses problem decomposition and a guided simulation methodology, which uses concepts of extrinsic and intrinsic guidance. These are integrated in a comprehensive framework and used to interlink the subproblems and guide the design process towards achieving overall objectives concurrently. A case study demonstrates viability of the framework. The methodology is efficient and flexible, and can be adapted for other problems where resource sharing and integrated system design is critical. [ABSTRACT FROM AUTHOR] AB - Copyright of INFORMS Journal on Computing is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DECOMPOSITION method (Mathematics) KW - SIMULATION methods & models KW - INTEGRATED circuit design KW - LARGE scale systems KW - QUALITY of service KW - INTRANETS (Computer networks) KW - DECISION making -- Mathematical models KW - STOCHASTIC processes KW - MATHEMATICAL optimization KW - COMPUTER systems KW - RESEARCH KW - decomposition KW - guidance mechanisms KW - guided simulation KW - large-scale infrastructure design KW - metaheuristics KW - multiple-criteria decision analysis KW - quality of service KW - simulation optimization N1 - Accession Number: 26280036; Bhattacharjee, Sudip 1; Email Address: sbhattacharjee@business.uconn.edu Zhang, Hong 2; Email Address: hongzhang@missouristate.edu Ramesh, R. 3; Email Address: rramesh@acsu.buffalo.edu Andrews, Dee H. 4; Email Address: dee.andrews@mesa.afmc.af.mil; Affiliation: 1: School of Business, University of Connecticut, Storrs, Connecticut 06269 2: College of Business Administration, Missouri State University, Springfield, Missouri 65897 3: Department of Management Science and Systems, School of Management, State University of New York at Buffalo, Buffalo, New York 14260 4: Air Force Research Laboratory, Mesa, Arizona 85206; Source Info: Summer2007, Vol. 19 Issue 3, p429; Subject Term: DECOMPOSITION method (Mathematics); Subject Term: SIMULATION methods & models; Subject Term: INTEGRATED circuit design; Subject Term: LARGE scale systems; Subject Term: QUALITY of service; Subject Term: INTRANETS (Computer networks); Subject Term: DECISION making -- Mathematical models; Subject Term: STOCHASTIC processes; Subject Term: MATHEMATICAL optimization; Subject Term: COMPUTER systems; Subject Term: RESEARCH; Author-Supplied Keyword: decomposition; Author-Supplied Keyword: guidance mechanisms; Author-Supplied Keyword: guided simulation; Author-Supplied Keyword: large-scale infrastructure design; Author-Supplied Keyword: metaheuristics; Author-Supplied Keyword: multiple-criteria decision analysis; Author-Supplied Keyword: quality of service; Author-Supplied Keyword: simulation optimization; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); Number of Pages: 14p; Illustrations: 3 Diagrams, 8 Charts, 1 Graph; Document Type: Article L3 - 10.1287/ijoc.1050.0173 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26280036&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Golden, Patrick J. AU - Hutson, Alisha AU - Sundaram, Vasan AU - Arps, James H. T1 - Effect of surface treatments on fretting fatigue of Ti–6Al–4V JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2007/07// VL - 29 IS - 7 M3 - Article SP - 1302 EP - 1310 SN - 01421123 AB - Abstract: The objective of this work was to investigate the performance of several coatings and surface treatments subjected to fretting fatigue with Ti–6Al–4V specimens and pads. Five coating systems were initially chosen and tested using two different fretting fatigue apparatus. The five coating systems considered were two types of Diamond Like Carbon (DLC), plasma sprayed molybdenum coating, electroless nickel–boron, and a plasma nitrided surface. In addition to the coatings, two surface treatments, Laser Shock Processing (LSP) and Low Plasticity Burnishing (LPB) were also considered both with and without coatings. Specimens with two of the best performing coatings were first subjected to LSP and LPB prior to coating application and then tested for fretting fatigue. These initial results show that the DLC coating significantly improves the fretting fatigue lives of the laboratory specimens. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACES (Technology) KW - METALS -- Fatigue KW - STRESS corrosion KW - CHROMIUM group KW - Coatings KW - Fatigue KW - Fretting KW - Laser shock processing KW - Low plasticity burnishing KW - Residual stress KW - Ti–6Al–4V N1 - Accession Number: 24386036; Golden, Patrick J. 1; Email Address: patrick.golden@wpafb.af.mil Hutson, Alisha 2 Sundaram, Vasan 3 Arps, James H. 4; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright–Patterson AFB, OH 45433-7817, USA 2: University of Dayton Research Institute, Dayton, OH 45469-0128, USA 3: Boeing Phantom Works, P.O. Box 3707, Seattle, WA 98124-2207, USA 4: Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78238-5166, USA; Source Info: Jul2007, Vol. 29 Issue 7, p1302; Subject Term: SURFACES (Technology); Subject Term: METALS -- Fatigue; Subject Term: STRESS corrosion; Subject Term: CHROMIUM group; Author-Supplied Keyword: Coatings; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Fretting; Author-Supplied Keyword: Laser shock processing; Author-Supplied Keyword: Low plasticity burnishing; Author-Supplied Keyword: Residual stress; Author-Supplied Keyword: Ti–6Al–4V; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijfatigue.2006.10.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24386036&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reich, Gregory AU - Sanders, Brian T1 - Introduction to Morphing Aircraft Research. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2007/07//Jul/Aug2007 VL - 44 IS - 4 M3 - Article SP - 1059 EP - 1059 SN - 00218669 AB - The article discusses the background of morphing aircraft. According to the authors, the concept of a variable geometry aircraft had designers excited because the concept enabled them to develop a number of aircraft that can change shape. They add that the concept emphasized the need to evolve air vehicle design to meet demanding performance specifications. It is said that the term morphing is being used to refer to vehicle adaptability of this type, but on a broader sense. The term is also used to describe a nontraditional method of moving vehicle components. There are several challenges related to morphing aircraft including the distributed high-power density actuation concepts. KW - AIRPLANES -- Design & construction KW - GEOMETRY KW - GEOMETRIC modeling KW - ENGINEERING design KW - SYSTEMS design KW - COMBINATORIAL optimization N1 - Accession Number: 26390127; Reich, Gregory 1 Sanders, Brian 1; Affiliation: 1: Air Vehicles Directorate, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH; Source Info: Jul/Aug2007, Vol. 44 Issue 4, p1059; Subject Term: AIRPLANES -- Design & construction; Subject Term: GEOMETRY; Subject Term: GEOMETRIC modeling; Subject Term: ENGINEERING design; Subject Term: SYSTEMS design; Subject Term: COMBINATORIAL optimization; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 541330 Engineering Services; Number of Pages: 1p; Document Type: Article L3 - 10.2514/1.28287 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26390127&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Inoyama, Daisaku AU - Sanders, Brian P. AU - Joo, James J. T1 - Topology Synthesis of Distributed Actuation Systems for Morphing Wing Structures. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2007/07//Jul/Aug2007 VL - 44 IS - 4 M3 - Article SP - 1205 EP - 1205 SN - 00218669 AB - This paper presents a novel topology optimization methodology for a synthesis of distributed actuation systems with specific applications to morphing air vehicle structures. The main emphasis is placed on the topology optimization problem formulation and the development of computational modeling concepts. The analysis model is developed to meet several important criteria: It must allow a large rigid-body displacement, as well as a variation in planform area, with minimum strain on structural members while retaining acceptable numerical stability for finite element analysis. For demonstration purposes, the in-plane morphing wing model is presented. Topology optimization is performed on a semiground structure with design variables that control the system configuration. In other words, the state of each element in the model is controlled by a corresponding design variable that, in turn, is determined through the optimization process. In effect, the optimization process assigns morphing members as soft elements, nonmorphing load-bearing members as stiff elements, and nonexistent members as "voids." The optimization process also determines the optimum actuator placement, where each actuator is represented computationally by equal and opposite nodal forces with soft axial stiffness. In addition, the configuration of attachments that connect the morphing structure (i.e., morphing wing) to a nonmorphing structure (i.e., fuselage) is determined simultaneously in the same process. Several different optimization problem formulations are investigated to understand their potential benefits in solution quality, as well as meaningfulness of the formulations. Sample in-plane morphing problems are solved to demonstrate the potential capability of the methodology introduced in this paper. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - AIRPLANE control systems KW - AIRPLANES -- Design & construction KW - FINITE element method KW - ACTUATORS KW - STRUCTURAL optimization N1 - Accession Number: 26390109; Inoyama, Daisaku 1,2 Sanders, Brian P. 3,4,5 Joo, James J. 6,7,8; Affiliation: 1: University of Dayton, Dayton, Ohio 45469 2: Member AIAA 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 4: Senior Research Engineer, Air Force Research Laboratory, Air Vehicles Directorate, Advanced Structural Concepts Branch, 2210 8th Street, Building 146 5: Associate Fellow, AIAA 6: University of Dayton Research Institute, Dayton, Ohio 45469 7: Research Engineer, Aerospace Mechanics Division 8: Member, AIAA; Source Info: Jul/Aug2007, Vol. 44 Issue 4, p1205; Subject Term: AIRPLANE wings; Subject Term: AIRPLANE control systems; Subject Term: AIRPLANES -- Design & construction; Subject Term: FINITE element method; Subject Term: ACTUATORS; Subject Term: STRUCTURAL optimization; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.2514/1.25535 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26390109&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, H. A. AU - Kim, Y. I. AU - Park, G. J. AU - Kolonay, R. M. AU - Blair, M. AU - Canfield, R. A. T1 - Structural Optimization of a Joined Wing Using Equivalent Static Loads. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2007/07//Jul/Aug2007 VL - 44 IS - 4 M3 - Article SP - 1302 EP - 1302 SN - 00218669 AB - The joined wing is a new concept of the airplane wing. The forewing and the aft wing are joined together in a joined wing. The range and loiter are longer than those of a conventional wing. The joined wing can lead to increased aerodynamic performance and reduction of the structural weight. In this research, dynamic response optimization of a joined wing is carried out by using equivalent static loads. Equivalent static loads are made to generate the same displacement field as that from dynamic loads at each time step of dynamic analysis. The gust loads are considered as critical loading conditions and they dynamically act on the structure of the aircraft. It is difficult to identify the exact gust-load profile; therefore, the dynamic loads are assumed to be a one-cosine function. Static response optimization is performed for the two cases: one uses the same design variable definition as dynamic response optimization, and the other uses the thicknesses of all elements as design variables; the results are then compared. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - AIRPLANES -- Design & construction KW - AIRPLANES -- Handling characteristics KW - DEAD loads (Mechanics) KW - ATMOSPHERIC turbulence KW - AERODYNAMICS N1 - Accession Number: 26390119; Lee, H. A. 1 Kim, Y. I. 1 Park, G. J. 1,2; Email Address: gjpark@hanyang.ac.kr Kolonay, R. M. 3,4 Blair, M. 3,5 Canfield, R. A. 5,6; Affiliation: 1: Hanyang University, Ansan 425-791, Republic of Korea 2: Senior Member, AIAA 3: U. S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 4: Member, AIAA 5: Associate Fellow, AIAA 6: U. S. Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433-7765; Source Info: Jul/Aug2007, Vol. 44 Issue 4, p1302; Subject Term: AIRPLANE wings; Subject Term: AIRPLANES -- Design & construction; Subject Term: AIRPLANES -- Handling characteristics; Subject Term: DEAD loads (Mechanics); Subject Term: ATMOSPHERIC turbulence; Subject Term: AERODYNAMICS; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.2514/1.26869 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26390119&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cruse, Thomas A. AU - Brown, Jeffrey M. T1 - Confidence Interval Simulation for Systems of Random Variables. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2007/07// VL - 129 IS - 3 M3 - Article SP - 836 EP - 842 SN - 07424795 AB - Bayesian network models are seen as important tools in probabilistic design assessment for complex systems. Such network models for system reliability analysis provide a single probability of failure value whether the experimental data used to model the random variables in the problem are perfectly known or derive from limited experimental data. The values of the probability of failure for each of those two cases are not the same, of course, but the point is that there is no way to derive a Bayesian type of confidence interval from such reliability network models. Bayesian confidence (or belief) intervals for a probability of failure are needed for complex system problems in order to extract information on which random variables are dominant, not just for the expected probability of failure but also for some upper bound, such as for a 95% confidence upper bound. We believe that such confidence bounds on the probability of failure will be needed for certifying turbine engine components and systems based on probabilistic design methods. This paper reports on a proposed use of a two-step Bayesian network modeling strategy that provides a full cumulative distribution function for the probability of failure, conditioned by the experimental evidence for the selected random variables. The example is based on a hypothetical high-cycle fatigue design problem for a transport aircraft engine application. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROBABILITY theory KW - RANDOM variables KW - BAYESIAN analysis KW - AIRCRAFT gas turbines KW - GAS turbines KW - DISTRIBUTION (Probability theory) N1 - Accession Number: 26113601; Cruse, Thomas A. 1; Email Address: Thomas.Cruse@wpafb.af.mil Brown, Jeffrey M. 2; Email Address: Jeffrey.Brown@wpafb.af.mil; Affiliation: 1: Chief Technologist (IPA) Air Force Research Laboratory, Wright-Patterson AFB, OH 45463 2: Structural Modeling Engineer Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, OH 45463; Source Info: Jul2007, Vol. 129 Issue 3, p836; Subject Term: PROBABILITY theory; Subject Term: RANDOM variables; Subject Term: BAYESIAN analysis; Subject Term: AIRCRAFT gas turbines; Subject Term: GAS turbines; Subject Term: DISTRIBUTION (Probability theory); NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 7p; Illustrations: 2 Diagrams, 4 Charts, 4 Graphs; Document Type: Article L3 - 10.1115/1.2718217 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26113601&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Turner, T. J. AU - Miller, M. P. T1 - Modeling the Influence of Material Structure on Deformation Induced Surface Roughening in AA7050 Thick Plate. JO - Journal of Engineering Materials & Technology JF - Journal of Engineering Materials & Technology Y1 - 2007/07// VL - 129 IS - 3 M3 - Article SP - 367 EP - 379 SN - 00944289 AB - A methodology for incorporating a description of material structure into a finite element formulation is presented. This work describes an experiment/simulation - based methodology for characterizing attributes of material structure, and then incorporating those attributes into a modeling framework. The modeling framework was used to study the development of deformation induced surface roughening in thin sheets mnachined from AA 7050 thick plate. Predicting this roughening phenomenon necessitates the quantification and representation of material structure and processes that exist over several size scales. Electron backscatter diffraction experiments were used for material structure characterization, which included crystallographic texture, distributions in grain sizes, and a distribution in intragrain mnisorientation. These distributions in structure were incorporated in digital micro structures which represented virtual specimens composed of finite element-discretized crystals. A continuum slip-polycrystal plasticity model was coupled with the digital microstructures to study the differences in roughening seen in specimens deformed along the rolling direction and transverse direction of the plate material. The success of these simulations build additional insight into how to incorporate material structure into deformation simulations, and build representative virtual specimens that can be used to study the complicated processes that underlie deformation mechanics in polycrystalline materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering Materials & Technology is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEFORMATIONS (Mechanics) KW - SURFACES (Technology) KW - POLYCRYSTALS KW - PLASTICITY KW - ALUMINUM plates KW - aluminum plate KW - characterization KW - multi-scale modeling KW - polycrystal plasticiiy KW - spatial gradients KW - texture N1 - Accession Number: 25918392; Turner, T. J. 1 Miller, M. P. 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, 2230 10th Street, Wright-Patterson AFB, OH 45433-7817 2: Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY 14853; Source Info: Jul2007, Vol. 129 Issue 3, p367; Subject Term: DEFORMATIONS (Mechanics); Subject Term: SURFACES (Technology); Subject Term: POLYCRYSTALS; Subject Term: PLASTICITY; Subject Term: ALUMINUM plates; Author-Supplied Keyword: aluminum plate; Author-Supplied Keyword: characterization; Author-Supplied Keyword: multi-scale modeling; Author-Supplied Keyword: polycrystal plasticiiy; Author-Supplied Keyword: spatial gradients; Author-Supplied Keyword: texture; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331315 Aluminum Sheet, Plate, and Foil Manufacturing; Number of Pages: 13p; Illustrations: 8 Diagrams, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1115/1.2744395 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25918392&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hall, Doyle T. AU - Africano, John L. AU - Lambert, John V. AU - Kervin, Paul W. T1 - Time-Resolved I-Band Photometry of Calibration Spheres and NaK Droplets. JO - Journal of Spacecraft & Rockets JF - Journal of Spacecraft & Rockets Y1 - 2007/07//Jul/Aug2007 VL - 44 IS - 4 M3 - Article SP - 910 EP - 919 SN - 00224650 AB - We have developed a program to obtain photometry of Earth-orbiting satellites using the U.S. Air Force advanced electrooptical system 3.6 m telescope's Visible Imager instrument, which acquires time-series charge-coupled device images at typical rates of 0.1 to 2.1 Hz. Observations of 12 spherical satellites provide measurements of 1-band albedos (i.e., reflectances) and evaluation of surface nonuniformities. Best-fit specular + diffuse albedo models enable brightness predictions and a means to grade the quality of the spheres as photometric calibration reference objects. CalSphere-4A appears to be the highest quality calibrator of the 12, with the best-fit model reproducing 90% of the measurements to within ±0.03 stellar magnitudes. This four-decade-old sphere reflects in a predominantly diffuse fashion and has a total albedo of ≈ 67% that is somewhat lower than expected for fresh white paint, effects likely due to space weathering. The aluminum Lincoln Calibration Sphere-1 shows predominantly specular reflection (albedos ≈59%) but with ±0.3 magnitude deviations between data and model that recur every 30-90 s, likely due to one or more surface irregularities. Three other predominantly specular aluminum spheres display less frequent but larger amplitude deviations. Observations indicate that sodium/potassium droplets leaked from Soviet radar ocean reconnaissance satellite reactors are highly reflective specular spheres that can also serve as optical calibrators. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASTRONOMICAL photometry KW - PHOTOMETRY KW - CALIBRATION KW - ARTIFICIAL satellites KW - ELECTROOPTICAL devices KW - TIME series analysis N1 - Accession Number: 26408006; Hall, Doyle T. 1 Africano, John L. 1 Lambert, John V. 1 Kervin, Paul W. 2; Affiliation: 1: The Boeing Company, Colorado Springs, Colorado, 80919 2: U.S. Air Force Research Laboratory, Kihei, Hawaii, 96753; Source Info: Jul/Aug2007, Vol. 44 Issue 4, p910; Subject Term: ASTRONOMICAL photometry; Subject Term: PHOTOMETRY; Subject Term: CALIBRATION; Subject Term: ARTIFICIAL satellites; Subject Term: ELECTROOPTICAL devices; Subject Term: TIME series analysis; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 10p; Illustrations: 2 Charts, 8 Graphs; Document Type: Article L3 - 10.2514/1.27464 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26408006&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Peterson, Erin L. T1 - Fibromyalgia—Management of a misunderstood disorder. JO - Journal of the American Academy of Nurse Practitioners JF - Journal of the American Academy of Nurse Practitioners Y1 - 2007/07// VL - 19 IS - 7 M3 - Article SP - 341 EP - 348 PB - Wiley-Blackwell SN - 10412972 AB - Purpose: The purpose of this article is to review (a) what is currently known about the pathophysiology of fibromyalgia (FM), (b) how to identify patients who are susceptible to this disorder, and (c) the recommended pharmacological and nonpharmacological treatment options. Data sources: Data sources include reviews and original research from scholarly journals and Internet sites. Conclusions: There are approximately 6 million individuals in the United States diagnosed with FM, making it the third most prevalent rheumatologic disorder in this country. Failure to identify a specific causal mechanism for FM has resulted in a shift in the focus of research from etiology to treatment (Baumstark & Buckelew, 2002). Based on the literature, the most successful interventions for reduction of chronic symptoms in the FM patient is a combination of education, psychological assistance, and exercise, along with medications. It is essential that nurse practitioners (NPs) understand the issues and concerns of patients afflicted with this complex disorder. Although the organic etiology of FM syndrome remains unclear, the goals of treatment are to control pain and improve adjustment, well-being, and daily functioning of these patients to the maximum extent possible. Implications for practice: NPs are in a unique position to help identify patients who may be suffering from FM or those diagnosed with FM reporting inadequate relief of symptoms. The incomplete understanding of the biological underpinnings, as well as the multiple symptoms that characterize FM syndrome, make it a challenging disorder to diagnose and treat. It takes time and patience to care for FM patients, and there are no “quick fixes.” Diagnosis is made by a combination of patient history, physical examination, laboratory evaluations, and exclusion of other causes of symptoms confused with FM. Understanding the symptomology and recommended treatments will allow NPs to give appropriate care that may include making referrals for multidisciplinary treatment of these complex patients. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Academy of Nurse Practitioners is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PATHOLOGICAL physiology KW - FIBROMYALGIA KW - RHEUMATOLOGY KW - CHRONIC diseases KW - NURSE practitioners KW - UNITED States KW - Fibromyalgia KW - fibrositis KW - nurse practitioners N1 - Accession Number: 25997946; Peterson, Erin L. 1; Email Address: erin.peterson@aviano.af.mil; Affiliation: 1: Family Nurse Practitioner, Education & Training Flight Commander, United States Air Force, Aviano Air Base, Italy; Source Info: Jul2007, Vol. 19 Issue 7, p341; Subject Term: PATHOLOGICAL physiology; Subject Term: FIBROMYALGIA; Subject Term: RHEUMATOLOGY; Subject Term: CHRONIC diseases; Subject Term: NURSE practitioners; Subject Term: UNITED States; Author-Supplied Keyword: Fibromyalgia; Author-Supplied Keyword: fibrositis; Author-Supplied Keyword: nurse practitioners; Number of Pages: 8p; Illustrations: 5 Charts; Document Type: Article L3 - 10.1111/j.1745-7599.2007.00235.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25997946&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wroblewski, Donald E. AU - Coté, Owen R. AU - Hacker, Jorg M. AU - Dobosy, Ron J. T1 - Cliff–Ramp Patterns and Kelvin–Helmholtz Billows in Stably Stratified Shear Flow in the Upper Troposphere: Analysis of Aircraft Measurements. JO - Journal of the Atmospheric Sciences JF - Journal of the Atmospheric Sciences Y1 - 2007/07// VL - 64 IS - 7 M3 - Article SP - 2521 EP - 2539 PB - American Meteorological Society SN - 00224928 AB - Cliff–ramp patterns (CR) are a common feature of scalar turbulence, characterized by a sharp temperature increase (cliff) followed by a more gradual temperature decrease (ramp). Aircraft measurements obtained from NOAA best aircraft turbulence probes (BAT) were used to characterize and compare CR patterns observed under stably stratified conditions in the upper troposphere, a region for which there are few such studies. Experimental data were analyzed for three locations, one over Wales and two over southern Australia, the latter in correspondence with the Southern Hemisphere winter subtropical jet stream. Comparison of observed CR patterns with published direct numerical simulations (DNS) revealed that they were likely signatures of Kelvin–Helmholtz (KH) billows, with the ramps associated with the well-mixed billows and the cliffs marking the highly stretched braids. Strong correlation between potential temperature and horizontal velocity supported the KH link, though expected correlations with vertical velocity were not observed. The temperature fronts associated with the cliffs were oriented in a direction approximately normal to the mean wind direction. Locally high values of temperature structure constant near these fronts were associated with steep temperature gradients across the fronts; this may be misleading in the context of electromagnetic propagation, suggesting a false positive indication of high levels of small-scale turbulence that would not correspond to scintillation effects. Billow aspect ratios, braid angles, and length scales were estimated from the data and comparisons with published DNS provided a means for assessing the stage of evolution of the KH billows and the initial Richardson number of the layer. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Atmospheric Sciences is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHEAR flow KW - TROPOSPHERE KW - ATMOSPHERIC turbulence KW - AIRPLANES KW - FRONTS (Meteorology) KW - ATMOSPHERIC temperature N1 - Accession Number: 25972512; Wroblewski, Donald E. 1; Email Address: dew11@bu.edu Coté, Owen R. 2 Hacker, Jorg M. 3 Dobosy, Ron J. 4; Affiliation: 1: Boston University, Boston, Massachusetts 2: Air Force Research Laboratory, Hanscom AFB, Massachusetts 3: Flinders University, Adelaide, Australia 4: NOAA/ERL/ARL, Oak Ridge, Tennessee; Source Info: Jul2007, Vol. 64 Issue 7, p2521; Subject Term: SHEAR flow; Subject Term: TROPOSPHERE; Subject Term: ATMOSPHERIC turbulence; Subject Term: AIRPLANES; Subject Term: FRONTS (Meteorology); Subject Term: ATMOSPHERIC temperature; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; Number of Pages: 19p; Illustrations: 2 Diagrams, 6 Charts, 11 Graphs; Document Type: Article L3 - 10.1175/JAS3956.1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25972512&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Paulus, Brian F. AU - Bazar, Matthew A. AU - Salice, Christopher J. AU - Mattie, David R. AU - Major, Michael A. T1 - Perchlorate Inhibition of Iodide Uptake in Normal and Iodine-deficient Rats. JO - Journal of Toxicology & Environmental Health: Part A JF - Journal of Toxicology & Environmental Health: Part A Y1 - 2007/07// VL - 70 IS - 13 M3 - Article SP - 1142 EP - 1149 SN - 15287394 AB - Perchlorate-induced inhibition of thyroidal iodide uptake was measured in normal and iodine-deficient female Sprague-Dawley rats. Rats that were made iodine-deficient by long-term restriction of iodine in the diet absorbed a gavage dose of 131I to the thyroid in proportionally greater amounts than rats fed a normal diet. Furthermore, the iodine-deficient rats maintained their high rates of absorption even when challenged by levels of perchlorate in their drinking water sufficient to produce pronounced inhibition of 131I uptake in rats fed a normal diet. Every dose of perchlorate used in this study (1.1, 5.6, and 28 mg/L) produced significant inhibition of iodide uptake in normally fed rats, but only the highest level of perchlorate (28 mg/L) significantly inhibited thyroidal uptake of 131I in the iodine-deficient rats. Taken together, these results demonstrate that iodide-deficient animals exhibit increased resistance to the inhibition of iodine absorption resulting from perchlorate exposure. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Toxicology & Environmental Health: Part A is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RATS -- Physiology KW - IRON deficiency diseases KW - PERCHLORATES KW - IODIDES KW - TUBE feeding KW - THYROID gland KW - DIET -- Physiological aspects KW - CHEMICAL inhibitors KW - ABSORPTION N1 - Accession Number: 25346976; Paulus, Brian F. 1 Bazar, Matthew A. 1 Salice, Christopher J. 1 Mattie, David R. 2 Major, Michael A. 1; Email Address: Mick.Major@us.army.mil; Affiliation: 1: Directorate of Toxicology, Health Effects Research Program, U.S. Army Center for Health Promotion and Preventive Medicine. Aberdeen Proving Ground, Maryland. USA 2: Air Force Research Laboratory, HEPB, Wright-Patterson Air Force Base. Ohio. USA; Source Info: Jul2007, Vol. 70 Issue 13, p1142; Subject Term: RATS -- Physiology; Subject Term: IRON deficiency diseases; Subject Term: PERCHLORATES; Subject Term: IODIDES; Subject Term: TUBE feeding; Subject Term: THYROID gland; Subject Term: DIET -- Physiological aspects; Subject Term: CHEMICAL inhibitors; Subject Term: ABSORPTION; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 8p; Illustrations: 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1080/15287390701252741 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25346976&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kramer, Ryan M. AU - Crookes-Goodson, Wendy J. AU - Naik, Rajesh R. T1 - The self-organizing properties of squid reflectin protein. JO - Nature Materials JF - Nature Materials Y1 - 2007/07// VL - 6 IS - 7 M3 - Article SP - 533 EP - 538 SN - 14761122 AB - Reflectins, a recently identified protein family that is enriched in aromatic and sulphur-containing amino acids, are used by certain cephalopods to manage and manipulate incident light in their environment. These proteins are the predominant constituent of nanoscaled photonic structures that function in static and adaptive colouration, extending visual performance and intra-species communication. Our investigation into recombinantly expressed reflectin has revealed unanticipated self-assembling and behavioural properties, and we demonstrate that reflectin can be easily processed into thin films, photonic grating structures and fibres. Our findings represent a key step in our understanding of the property–function relationships of this unique family of reflective proteins. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature Materials is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTEINS KW - SELF-organizing systems KW - SQUIDS KW - AMINO acids KW - CEPHALOPODA KW - PHOTONICS KW - NANOSCIENCE N1 - Accession Number: 25586845; Kramer, Ryan M. 1 Crookes-Goodson, Wendy J. 1 Naik, Rajesh R. 1; Email Address: rajesh.naik@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Biotechnology Group, Wright-Patterson Air Force Base, Dayton, Ohio 45433, USA; Source Info: Jul2007, Vol. 6 Issue 7, p533; Subject Term: PROTEINS; Subject Term: SELF-organizing systems; Subject Term: SQUIDS; Subject Term: AMINO acids; Subject Term: CEPHALOPODA; Subject Term: PHOTONICS; Subject Term: NANOSCIENCE; NAICS/Industry Codes: 114113 Salt water fishing; Number of Pages: 6p; Illustrations: 5 Diagrams; Document Type: Article L3 - 10.1038/nmat1930 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25586845&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Albert, J. M. T1 - Refractive index and wavenumber properties for cyclotron resonant quasilinear diffusion by cold plasma waves. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2007/07// VL - 14 IS - 7 M3 - Article SP - 072901 PB - American Institute of Physics SN - 1070664X AB - Wave-particle interactions have a large effect on magetospheric particles, in the radiation belts and elsewhere. Bounce-averaged quasilinear diffusion coefficients have been calculated for whistler hiss and chorus and electromagnetic ion cyclotron waves (EMIC), which are all believed to play major roles. To perform these calculations efficiently, techniques have been developed that use properties of the refractive index of these modes to identify ranges of wave-normal angle that are compatible with cyclotron resonance in a given frequency band. Other cold plasma waves, in the L-X, L-O, R-X, and Z modes, can also resonate with energetic electrons, and some preliminary calculations of their diffusion coefficients have been reported. Here, it is shown that the refractive index of these modes allows the techniques developed for whistler and EMIC waves to be applied to them as well. Sample calculations are presented for Z mode waves, with ωpe>Ωe and ωpe<Ωe. It is also observed that for any cold plasma mode, the wavenumber is an increasing function of frequency for a fixed value of wave-normal angle; this is proved algebraically with mild approximations and verified numerically for a very wide range of parameters. This allows a variant of the technique for efficiently calculating diffusion coefficients. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REFRACTIVE index KW - CYCLOTRONS KW - CYCLOTRON resonance KW - DIFFUSION KW - PLASMA waves KW - PLASMA (Ionized gases) N1 - Accession Number: 26054162; Albert, J. M. 1; Affiliation: 1: Air Force Research Laboratory/VSBX, Hanscom AFB, Massachusetts 01731, USA; Source Info: Jul2007, Vol. 14 Issue 7, p072901; Subject Term: REFRACTIVE index; Subject Term: CYCLOTRONS; Subject Term: CYCLOTRON resonance; Subject Term: DIFFUSION; Subject Term: PLASMA waves; Subject Term: PLASMA (Ionized gases); NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; Number of Pages: 8p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1063/1.2744363 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26054162&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Look, D.C. T1 - Unusual electrical properties of hydrothermally grown ZnO JO - Superlattices & Microstructures JF - Superlattices & Microstructures Y1 - 2007/07// VL - 42 IS - 1-6 M3 - Article SP - 284 EP - 289 SN - 07496036 AB - Abstract: Bulk ZnO of high structural and optical quality can be grown by the hydrothermal method. An X-ray rocking-curve linewidth of 18 arcsec has been measured for the (002) reflection, and a photoluminescence linewidth of 0.3 meV has been found for one of the donor–bound exciton lines. However, the electrical properties are unusual in that shallow donors are not dominant, as is the case for vapor-phase-grown and melt-grown bulk crystals. This situation can be greatly modified by annealing in forming gas (5% H2 in N2) at , with bulk shallow donors then becoming completely dominant for , and near-surface donors at lower temperatures. As is varied from 100–650 ∘C, both the mobility and carrier concentration vary in nonmonotonic fashion, due to changes in the relative strengths of the bulk and surface components of conduction. [Copyright &y& Elsevier] AB - Copyright of Superlattices & Microstructures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC currents KW - HALL effect KW - CRYSTALLOGRAPHY KW - CRYSTALS KW - Hall effect KW - Hydrothermal growth KW - Photoluminescence KW - Surface conduction KW - ZnO N1 - Accession Number: 26585437; Look, D.C. 1,2; Email Address: David.Look@wpafb.af.mil; Affiliation: 1: Semiconductor Research Center, Wright State University, Dayton, OH 45435, United States 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, OH 45433, United States; Source Info: Jul2007, Vol. 42 Issue 1-6, p284; Subject Term: ELECTRIC currents; Subject Term: HALL effect; Subject Term: CRYSTALLOGRAPHY; Subject Term: CRYSTALS; Author-Supplied Keyword: Hall effect; Author-Supplied Keyword: Hydrothermal growth; Author-Supplied Keyword: Photoluminescence; Author-Supplied Keyword: Surface conduction; Author-Supplied Keyword: ZnO; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.spmi.2007.04.058 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26585437&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mass, J. AU - Avella, M. AU - Jiménez, J. AU - Callahan, M. AU - Grant, E. AU - Rakes, K. AU - Bliss, D. AU - Wang, B. T1 - Cathodoluminescence study of extended defects in hydrothermal ZnO crystals JO - Superlattices & Microstructures JF - Superlattices & Microstructures Y1 - 2007/07// VL - 42 IS - 1-6 M3 - Article SP - 306 EP - 313 SN - 07496036 AB - Abstract: Understanding the luminescence of ZnO is very important for some applications. In spite of the many studies carried out, there are still some points concerning the origin of some of the luminescence emissions in ZnO crystals that require additional study; in particular, the role of extended defects remains to be a matter of controversy. We present here a cathodoluminescence analysis of the defects generated by Vickers indentation in hydrothermal HTT crystals. Special emphasis was paid to the luminescence band peaking around 3.3 eV. The origin of this band is a matter of controversy, since it has been related to different causes, extended defects being one of the candidates for this emission. The CL images were acquired around crystal defects. It is observed that the 3.3 eV emission is enhanced around the crystal defects; though it is also observed, but weaker, out of the defect regions, which suggests that there exist two luminescence emissions peaking very close to 3.3 eV. The two emissions, one related to structural defects and the other to the LO phonon replica of the free excitonic band, appear very close each other and their relative intensity should determine the shape of the spectrum. [Copyright &y& Elsevier] AB - Copyright of Superlattices & Microstructures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LUMINESCENCE KW - LIGHT sources KW - CRYSTALLOGRAPHY KW - CRYSTALS KW - Cathodoluminescence KW - Crystal defects KW - Hydrothermal crystal KW - ZnO N1 - Accession Number: 26585441; Mass, J. 1,2 Avella, M. 1 Jiménez, J. 1; Email Address: jimenez@fmc.uva.es Callahan, M. 3 Grant, E. 3 Rakes, K. 3 Bliss, D. 3 Wang, B. 4; Affiliation: 1: Física de la Materia Condensada, ETSII, 47011 Valladolid, Spain 2: Dpto. Matemáticas y Física, UniNorte, Km5 Barranquilla, Colombia 3: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA 01731, USA 4: Solid State Scientific Corp., Nashua, NH 03049, USA; Source Info: Jul2007, Vol. 42 Issue 1-6, p306; Subject Term: LUMINESCENCE; Subject Term: LIGHT sources; Subject Term: CRYSTALLOGRAPHY; Subject Term: CRYSTALS; Author-Supplied Keyword: Cathodoluminescence; Author-Supplied Keyword: Crystal defects; Author-Supplied Keyword: Hydrothermal crystal; Author-Supplied Keyword: ZnO; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.spmi.2007.04.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26585441&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sandhu, Sarwan S. AU - Brutchen, George W. AU - Fellner, Joseph P. T1 - Lithium/air cell: Preliminary mathematical formulation and analysis JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2007/06/30/ VL - 170 IS - 1 M3 - Article SP - 196 EP - 209 SN - 03787753 AB - Abstract: Fundamentals of classical thermodynamics and chemical species mole balances have been applied to formulate the mathematical equations to compute lithium/air cell reversible reaction voltages, heat transfer rate between the cell and its surroundings, theoretical discharge capacity, and thermal efficiency. The developed formulation also provides a set of mathematical equations to compute the total cathode volume for a desired maximum discharge capacity of a lithium/air cell or battery. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LITHIUM KW - THERMODYNAMICS KW - HEAT transfer KW - MECHANICS (Physics) KW - Lithium/air cell N1 - Accession Number: 25343091; Sandhu, Sarwan S. 1; Email Address: sarwan.sandhu@notes.udayton.edu Brutchen, George W. 1 Fellner, Joseph P. 2; Affiliation: 1: Department of Chemical Engineering, University of Dayton, Dayton, OH 45469, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7251, USA; Source Info: Jun2007, Vol. 170 Issue 1, p196; Subject Term: LITHIUM; Subject Term: THERMODYNAMICS; Subject Term: HEAT transfer; Subject Term: MECHANICS (Physics); Author-Supplied Keyword: Lithium/air cell; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.jpowsour.2007.04.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25343091&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Choi, Ja-Young AU - Han, Sang-Wook AU - Huh, Wan-Soo AU - Tan, Loon-Seng AU - Baek, Jong-Beom T1 - In situ grafting of carboxylic acid-terminated hyperbranched poly(ether-ketone) to the surface of carbon nanotubes JO - Polymer JF - Polymer Y1 - 2007/06/29/ VL - 48 IS - 14 M3 - Article SP - 4034 EP - 4040 SN - 00323861 AB - Abstract: Carboxylic acid-terminated hyperbranched poly(ether-ketone)s (HPEKs) were successfully grafted onto the surfaces of single-walled carbon nanotube (SWNT) and multi-walled carbon nanotube (MWNT) to afford HPEK-g-SWNT and HPEK-g-MWNT nanocomposites. They were prepared via in situ polymerization of 5-phenoxyisophthalic acid as an AB2 monomer for the HPEK in the presence of SWNT or MWNT in polyphosphoric acid (PPA)/phosphorous pentoxide (P2O5) medium. The resultant nanocomposites were homogeneously dispersed in various common polar aprotic solvents as well as in concentrated ammonium hydroxide. The experimental results from Soxhlet extraction, solubility enhancement, elemental analysis (EA), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM) provided clear evidences for grafting of hyperbranched polymers onto the surfaces of corresponding CNT''s. Achieving enhanced solubility of CNT''s in common organic solvents via the functionalization of CNT''s is a key step for CNT''s to be used in various application-specific purposes. The results could potentially envision to the area of CNT researches via the efficient introduction of three-dimensional globular dendritic macromolecules as increasing solubility, available multi-functionality, reactivity, processability, and also biocompatibility. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBOXYLIC acids KW - CARBON nanotubes KW - POLYMERIZATION KW - SOLVENTS KW - THERMOGRAVIMETRY KW - MACROMOLECULES KW - Carbon nanotubes KW - Hyperbranched poly(ether-ketone) KW - Polyphosphoric acid N1 - Accession Number: 25491472; Choi, Ja-Young 1 Han, Sang-Wook 1 Huh, Wan-Soo 2 Tan, Loon-Seng 3 Baek, Jong-Beom 1; Email Address: jbbaek@chungbuk.ac.kr; Affiliation: 1: School of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 361-763, South Korea 2: Department of Chemical and Environmental Engineering, Soongsil University, Seoul 156-743, South Korea 3: Polymer Branch, Materials & Manufacturing Directorate, AFRL/MLBP, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433-7750, USA; Source Info: Jun2007, Vol. 48 Issue 14, p4034; Subject Term: CARBOXYLIC acids; Subject Term: CARBON nanotubes; Subject Term: POLYMERIZATION; Subject Term: SOLVENTS; Subject Term: THERMOGRAVIMETRY; Subject Term: MACROMOLECULES; Author-Supplied Keyword: Carbon nanotubes; Author-Supplied Keyword: Hyperbranched poly(ether-ketone); Author-Supplied Keyword: Polyphosphoric acid; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.polymer.2007.04.073 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25491472&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jordan, Jennifer L. AU - Siviour, Clive R. AU - Foley, Jason R. AU - Brown, Eric N. T1 - Compressive properties of extruded polytetrafluoroethylene JO - Polymer JF - Polymer Y1 - 2007/06/29/ VL - 48 IS - 14 M3 - Article SP - 4184 EP - 4195 SN - 00323861 AB - Abstract: Polymers are becoming increasingly used in aerospace structural applications, where they experience complex, non-static loads. Correspondingly, the mechanical properties at high strain rates are of increasing importance in these applications. This paper presents an investigation of the properties of Dupont 9B polytetrafluoroethylene (PTFE) across strain rates from 10−3 to 105 s−1. The samples were tested using an Instron mechanical testing machine for static loading, traditional split Hopkinson pressure bars (SHPBs) for high strain rates, and a miniaturized SHPB for ultra-high strain rates. Additionally, the material was tested using dynamic mechanical analysis to determine the effects of time–temperature superposition on the strain rate behavior of the samples. The results of the experiments are analyzed using the Zerilli–Armstrong model for polymers, which shows good agreement with other PTFE studies. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - POLYTEF KW - MACROMOLECULES KW - SUPERPOSITION principle (Physics) KW - AEROSPACE industries KW - High strain rate mechanical properties KW - Polytetrafluoroethylene KW - Semi-crystalline polymer N1 - Accession Number: 25491491; Jordan, Jennifer L. 1; Email Address: jennifer.jordan@eglin.af.mil Siviour, Clive R. 2 Foley, Jason R. 3 Brown, Eric N. 4; Affiliation: 1: Energetic Materials Branch, Munitions Directorate, Air Force Research Laboratory, Eglin AFB, FL 32542, United States 2: Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, UK 3: Fuzes Branch, Munitions Directorate, Air Force Research Laboratory, Eglin AFB, FL 32542, United States 4: Materials Science and Technology Division, Los Alamos National Lab, Los Alamos, NM 87545, United States; Source Info: Jun2007, Vol. 48 Issue 14, p4184; Subject Term: POLYMERS; Subject Term: POLYTEF; Subject Term: MACROMOLECULES; Subject Term: SUPERPOSITION principle (Physics); Subject Term: AEROSPACE industries; Author-Supplied Keyword: High strain rate mechanical properties; Author-Supplied Keyword: Polytetrafluoroethylene; Author-Supplied Keyword: Semi-crystalline polymer; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.polymer.2007.05.038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25491491&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Andrew J. Wagner AU - Charles A. Bleckmann AU - Richard C. Murdock AU - Amanda M. Schrand AU - John J. Schlager AU - Saber M. Hussain T1 - Cellular Interaction of Different Forms of Aluminum Nanoparticles in Rat Alveolar Macrophages. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2007/06/28/ VL - 111 IS - 25 M3 - Article SP - 7353 EP - 7359 SN - 15206106 AB - Nanomaterials, with dimensions in the 1−100 nm range, possess numerous potential benefits to society. However, there is little characterization of their effects on biological systems, either within the environment or on human health. The present study examines cellular interaction of aluminum oxide and aluminum nanomaterials, including their effect on cell viability and cell phagocytosis, with reference to particle size and the particle's chemical composition. Experiments were performed to characterize initial in vitro cellular effects of rat alveolar macrophages (NR8383) after exposure to aluminum oxide nanoparticles (Al2O3-NP at 30 and 40 nm) and aluminum metal nanoparticles containing a 2−3 nm oxide coat (Al-NP at 50, 80, and 120 nm). Characterization of the nanomaterials, both as received and in situ, was performed using transmission electron microscopy (TEM), dynamic light scattering (DLS), laser Doppler velocimetry (LDV), and/or CytoViva150 Ultra Resolution Imaging (URI)). Particles showed significant agglomeration in cell exposure media using DLS and the URI as compared to primary particle size in TEM. Cell viability assay results indicate a marginal effect on macrophage viability after exposure to Al2O3-NP at doses of 100 g/mL for 24 h continuous exposure. Al-NP produced significantly reduced viability after 24 h of continuous exposure with doses from 100 to 250 g/mL. Cell phagocytotic ability was significantly hindered by exposure to 50, 80, or 120 nm Al-NP at 25 g/mL for 24 h, but the same concentration (25 g/mL) had no significant effect on the cellular viability. However, no significant effect on phagocytosis was observed with Al2O3-NP. In summary, these results show that Al-NP exhibit greater toxicity and more significantly diminish the phagocytotic ability of macrophages after 24 h of exposure when compared to Al2O3-NP. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CELL interaction (Biology) KW - NANOPARTICLES KW - ALUMINUM oxide KW - LIGHT -- Scattering N1 - Accession Number: 25860454; Andrew J. Wagner 1 Charles A. Bleckmann 1 Richard C. Murdock 1 Amanda M. Schrand 1 John J. Schlager 1 Saber M. Hussain 1; Affiliation: 1: Air Force Institute of Technology, Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force,Research Laboratory, Wright-Patterson AFB, Ohio; Source Info: Jun2007, Vol. 111 Issue 25, p7353; Subject Term: CELL interaction (Biology); Subject Term: NANOPARTICLES; Subject Term: ALUMINUM oxide; Subject Term: LIGHT -- Scattering; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25860454&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parthasarathy, T.A. AU - Jefferson, G.J. AU - Kerans, R.J. T1 - Analytical evaluation of hybrid ceramic design concepts for optimized structural performance JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2007/06/25/ VL - 459 IS - 1/2 M3 - Article SP - 60 EP - 68 SN - 09215093 AB - Abstract: Many high temperature structural applications demand a material which has a combination of high thermo-chemical stability, hot strength and good foreign object damage (FOD) resistance. The possibility of combining the advantages of ceramic matrix composite (CMC) and monolithic forms of ceramics in a single hybrid design to obtain a strong damage tolerant material design was explored using modeling. The desired advantage will be enhanced reliability retaining high strength and other density-dependent properties such as thermal conductivity. Two key factors, identified as crucial to the concept, were analyzed. One of them was the prevention of cracks that form from foreign object damage (FOD) at the surface within the CMC, from entering the monolithic core. Finite element models predict that the use a porous interphase to engineer the interface is a viable strategy, and that an optimal thickness of this layer exists for maximum tendency to deflect cracks. The second factor examined was the ability of these hybrid materials to withstand thermal gradients. The model predicts that the concept is feasible if the CMC layer is sufficiently thin (<0.5mm). It is concluded that the hybrid design is a viable strategy for hot structures requiring damage tolerance. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CERAMICS KW - FINITE element method KW - STRENGTH of materials KW - THERMODYNAMICS KW - Ceramics KW - CMC KW - Design KW - Hybrid KW - Modeling KW - Monolith N1 - Accession Number: 24786421; Parthasarathy, T.A. 1,2; Email Address: Triplicane.Parthasarathy@wpafb.af.mil Jefferson, G.J. 1,2 Kerans, R.J. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLN, Wright-Patterson AFB, OH 45433-7817, United States 2: UES Inc., Dayton, OH 45432, United States; Source Info: Jun2007, Vol. 459 Issue 1/2, p60; Subject Term: CERAMICS; Subject Term: FINITE element method; Subject Term: STRENGTH of materials; Subject Term: THERMODYNAMICS; Author-Supplied Keyword: Ceramics; Author-Supplied Keyword: CMC; Author-Supplied Keyword: Design; Author-Supplied Keyword: Hybrid; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Monolith; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.msea.2006.12.091 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24786421&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tang, X. N. AU - Houchins, C. AU - Xu, H. F. AU - Ng, C. Y. AU - Chiu, Y. AU - Dressler, R. A. AU - Levandier, D. J. T1 - An experimental and quasiclassical trajectory study of the rovibrationally state-selected reactions: HD+(v=0–15,j=1)+He→HeH+(HeD+)+D(H). JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2007/06/21/ VL - 126 IS - 23 M3 - Article SP - 234305 PB - American Institute of Physics SN - 00219606 AB - The absolute integral cross sections for the formation of HeH+ and HeD+ from the collisions of HD+(v,j=1)+He have been examined over a broad range of vibrational energy levels v=0–13 at the center-of-mass collision energies (ET) of 0.6 and 1.4 eV using the vacuum ultraviolet (VUV) pulsed field ionization photoelectron secondary ion coincidence method. The ET dependencies of the integral cross sections for products HeH+ and HeD+ from HD+(v=0–4)+He collisions in the ET range of 0–3 eV have also been measured using the VUV photoionization guided ion beam mass spectrometric technique, in which vibrationally selected HD+(v) reactant ions were prepared via excitation of selected autoionization resonances of HD. At low total energies, a pronounced isotope effect is observed in absolute integral cross sections for the HeH++D and HeD++H channels with significant favoring of the deuteron transfer channel. As v is increased in the range of v=0–9, the integral cross sections of the HeH++D channel are found to approach those of HeD++H. The observed velocity distributions of products HeD+ and HeH+ are consistent with an impulsive or spectator-stripping mechanism. Detailed quasiclassical trajectory (QCT) calculations are also presented for HD+(v,j=1)+He collisions at the same energies of the experiment. The QCT calculations were performed on the most accurate ab initio potential energy surface available. If the zero-point energy of the reaction products is taken into account, the QCT cross sections for products HeH+ and HeD+ from HD+(v)+He are found to be significantly lower than the experimental results at ET values near the reaction thresholds. The agreement between the experimental and QCT cross sections improves with translational energy. Except for prethreshold reactivity, QCT calculations ignoring the zero-point energy in the products are generally in good agreement with experimental absolute cross sections. The experimental HeH+/HeD+ branching ratios for the HD+(v=0–9)+He collisions are generally consistent with QCT predictions. The observed isotope effects can be rationalized on the basis of differences in thermochemical thresholds and angular momentum conservation constraints. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRAJECTORY optimization KW - COLLISIONS (Physics) KW - VACUUM ultraviolet spectroscopy KW - IONIZATION (Atomic physics) KW - PHOTOELECTRON spectroscopy KW - IONS KW - PHOTOIONIZATION KW - AUGER effect N1 - Accession Number: 25536301; Tang, X. N. 1 Houchins, C. 1 Xu, H. F. 1 Ng, C. Y. 1; Email Address: cyng@chem.ucdavis.edu Chiu, Y. 2 Dressler, R. A. 2; Email Address: rainer.dressler@hanscom.af.mil Levandier, D. J. 3; Affiliation: 1: Department of Chemistry, University of California at Davis, One Shields Avenue, Davis, California 95616 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731-3010 3: Boston College, Institute for Scientific Research, Newton, Massachusetts 02159; Source Info: 6/21/2007, Vol. 126 Issue 23, p234305; Subject Term: TRAJECTORY optimization; Subject Term: COLLISIONS (Physics); Subject Term: VACUUM ultraviolet spectroscopy; Subject Term: IONIZATION (Atomic physics); Subject Term: PHOTOELECTRON spectroscopy; Subject Term: IONS; Subject Term: PHOTOIONIZATION; Subject Term: AUGER effect; Number of Pages: 15p; Illustrations: 4 Charts, 10 Graphs; Document Type: Article L3 - 10.1063/1.2743027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25536301&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anthony Midey AU - Itzhak Dotan AU - S. Lee AU - W. T. Rawlins AU - Mark A. Johnson AU - A. A. Viggiano T1 - Kinetics for the Reactions of O-and O2-with O2(a1g) Measured in a Selected Ion Flow Tube at 300 K. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2007/06/21/ VL - 111 IS - 24 M3 - Article SP - 5218 EP - 5222 SN - 10895639 AB - The kinetics of the reactions of O-and O2-with O2(a1g) have been studied at 300 K in a selected ion flow tube (SIFT). The O2(a1g) concentrations have been determined using emission at 1270 nm from the O2(a1g, v0 → X3g-, v0) transition measured with an InGaAs detector calibrated against absolute spectrally dispersed emission measurements. The rate constants measured for O-and O2-are 1.1 × 10-10and 6.6 × 10-10cm3s-1, respectively, with uncertainties of ±35%. The O2-reaction only produces electrons and can be described as Penning detachment, while the O-reaction has been found to produce both O2-and e-. The O2-branching fraction has a lower limit of ∼0.30. Comparison of the present results to previous measurements found in the literature provides a resolution to a previous discrepancy in the rate constant values. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL kinetics KW - OXYGEN KW - ELECTRONS KW - ION flow dynamics N1 - Accession Number: 25465477; Anthony Midey 1 Itzhak Dotan 1 S. Lee 1 W. T. Rawlins 1 Mark A. Johnson 1 A. A. Viggiano 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom Air Force Base,Massachusetts 01731-3010, Institute for Scientific Research, Boston College, Chestnut Hill, Massachusetts02467, The Open University of Israel, 108 Ravutski Street, Raanana, Israel, 43107, Physical Sciences Inc.,20 New England Business Center, Andover Massachusetts 01810, and Sterling Chemistry Laboratory,Yale University, New Haven, Connecticut 06520-8107; Source Info: Jun2007, Vol. 111 Issue 24, p5218; Subject Term: CHEMICAL kinetics; Subject Term: OXYGEN; Subject Term: ELECTRONS; Subject Term: ION flow dynamics; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25465477&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sun, G. AU - Cheng, H. H. AU - Menéndez, J. AU - Khurgin, J. B. AU - Soref, R. A. T1 - Strain-free Ge/GeSiSn quantum cascade lasers based on L-valley intersubband transitions. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/06/18/ VL - 90 IS - 25 M3 - Article SP - 251105 PB - American Institute of Physics SN - 00036951 AB - The authors propose a Ge/Ge0.76Si0.19Sn0.05 quantum cascade laser using intersubband transitions at L valleys of the conduction band which has a “clean” offset of 150 meV situated below other energy valleys (Γ,X). The entire structure is strain-free because the lattice-matched Ge and Ge0.76Si0.19Sn0.05 layers are to be grown on a relaxed Ge buffer layer on a Si substrate. Longer lifetimes due to the weaker scattering of nonpolar optical phonons reduce the threshold current and potentially lead to room temperature operation. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONDUCTION band KW - ELECTRIC conductivity KW - PHONONS KW - GERMANIUM crystals KW - ELECTRIC properties KW - LATTICE dynamics N1 - Accession Number: 25638376; Sun, G. 1 Cheng, H. H. 2 Menéndez, J. 3 Khurgin, J. B. 4 Soref, R. A. 5; Affiliation: 1: Department of Physics, University of Massachusetts Boston, Massachusetts 02125 2: Center for Condensed Matter Sciences, National Taiwan University, Taipei, 106, Taiwan and Graduate Institute of Electronics Engineering, National Taiwan University, Taipei 106, Taiwan 3: Department of Physics and Astronomy, Arizona State University, Tempe, Arizona 85287 4: Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, Maryland 21218 5: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731; Source Info: 6/18/2007, Vol. 90 Issue 25, p251105; Subject Term: CONDUCTION band; Subject Term: ELECTRIC conductivity; Subject Term: PHONONS; Subject Term: GERMANIUM crystals; Subject Term: ELECTRIC properties; Subject Term: LATTICE dynamics; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.2749844 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25638376&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, S. I. AU - Kametani, F. AU - Chen, Z. AU - Gurevich, A. AU - Larbalestier, D. C. AU - Haugan, T. AU - Barnes, P. T1 - On the through-thickness critical current density of an YBa2Cu3O7-x film containing a high density of insulating, vortex-pinning nanoprecipitates. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/06/18/ VL - 90 IS - 25 M3 - Article SP - 252502 PB - American Institute of Physics SN - 00036951 AB - Using sequential ion milling the authors have studied the thickness dependence of the critical current density Jc(H) of a single crystal 1 μm thick YBa2Cu3O7-x thin film containing ∼5 vol % of insulating Y2BaCuO5 (Y211) nanoparticles in order to better understand how to obtain high critical currents in thick films. Except very near the interface where the defect density was enhanced, Jc(H) in the body of the film was uniform and independent of thickness with a high maximum pinning force of 8.8 GN/m3 at 77 K. The authors conclude that the nanoscale Y211 precipitates result in strong, three-dimensional pinning characterized by a pin spacing of ∼30 nm, much smaller than the film thickness. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - THIN films KW - THICK films KW - MICROELECTRONICS KW - CRYSTALS KW - RESEARCH N1 - Accession Number: 25638420; Kim, S. I. 1 Kametani, F. 1 Chen, Z. 1 Gurevich, A. 1 Larbalestier, D. C. 1 Haugan, T. 2 Barnes, P. 2; Affiliation: 1: Applied Superconductivity Center, National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310 2: Air Force Research Laboratory, Dayton, Ohio 45433; Source Info: 6/18/2007, Vol. 90 Issue 25, p252502; Subject Term: NANOPARTICLES; Subject Term: THIN films; Subject Term: THICK films; Subject Term: MICROELECTRONICS; Subject Term: CRYSTALS; Subject Term: RESEARCH; Number of Pages: 3p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.2749437 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25638420&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shumelyuk, A. AU - Odoulov, S. AU - Oleynik, O. AU - Brost, G. AU - Grabar, A. T1 - Spectral sensitivity of nominally undoped photorefractive Sn2P2S6. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2007/06/15/ VL - 88 IS - 1 M3 - Article SP - 79 EP - 82 PB - Springer Science & Business Media B.V. SN - 09462171 AB - Nominally undoped tin hypothiodiphosphate is shown to possess photorefractive sensitivity from its band edge in the visible region of the spectrum up to 1.3 μm in the near infrared. The gain factor decreases with the increasing wavelength while the characteristic rate of photorefractive build-up roughly follows the spectral dependence of photoconductivity. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOREFRACTIVE materials KW - PHOTOCONDUCTIVITY KW - SPECTRUM analysis KW - NEAR infrared spectroscopy KW - PYROPHOSPHATES N1 - Accession Number: 25426730; Shumelyuk, A. 1 Odoulov, S. 1; Email Address: Odoulov@iop.kiev.ua Oleynik, O. 1,2 Brost, G. 3 Grabar, A. 4; Affiliation: 1: Institute of Physics, National Academy of Sciences, Nauky av. 46 03028 Kiev Ukraine 2: National O.O. Bogomoletz Medical University, 01004 Kiev, Ukraine 3: Air Force Research Laboratory/SNRD, 26 Electronic Pkwy Rome 13441-4515 USA 4: Institute of Solid State Physics and Chemistry, Uzhgorod State University, 88000 Uzhgorod Ukraine; Source Info: Jun2007, Vol. 88 Issue 1, p79; Subject Term: PHOTOREFRACTIVE materials; Subject Term: PHOTOCONDUCTIVITY; Subject Term: SPECTRUM analysis; Subject Term: NEAR infrared spectroscopy; Subject Term: PYROPHOSPHATES; Number of Pages: 4p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1007/s00340-007-2613-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25426730&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chai, N. AU - Kulatilaka, W.D. AU - Naik, S.V. AU - Laurendeau, N.M. AU - Lucht, R.P. AU - Kuehner, J.P. AU - Roy, S. AU - Katta, V.R. AU - Gord, J.R. T1 - Nitric oxide concentration measurements in atmospheric pressure flames using electronic-resonance-enhanced coherent anti-Stokes Raman scattering. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2007/06/15/ VL - 88 IS - 1 M3 - Article SP - 141 EP - 150 PB - Springer Science & Business Media B.V. SN - 09462171 AB - We report the application of electronic-resonance-enhanced coherent anti-Stokes Raman scattering (ERE-CARS) for measurements of nitric oxide concentration ([NO]) in three different atmospheric pressure flames. Visible pump (532 nm) and Stokes (591 nm) beams are used to probe the Q-branch of the Raman transition. A significant resonance enhancement is obtained by tuning an ultraviolet probe beam (236 nm) into resonance with specific rotational transitions in the (v’=0, v”=1) vibrational band of the A2Σ+–X2Π electronic system of NO. ERE-CARS spectra are recorded at various heights within a hydrogen-air flame producing relatively low concentrations of NO over a Hencken burner. Good agreement is obtained between NO ERE-CARS measurements and the results of flame computations using UNICORN, a two-dimensional flame code. Excellent agreement between measured and calculated NO spectra is also obtained when using a modified version of the Sandia CARSFT code for heavily sooting acetylene-air flames (φ=0.8 to φ=1.6) on the same Hencken burner. Finally, NO concentration profiles are measured using ERE-CARS in a laminar, counter-flow, non-premixed hydrogen-air flame. Spectral scans are recorded by probing the Q1 (9.5), Q1 (13.5) and Q1 (17.5) Raman transitions. The measured shape of the [NO] profile is in good agreement with that predicted using the OPPDIF code, even without correcting for collisional effects. These comparisons between [NO] measurements and predictions establish the utility of ERE-CARS for detection of NO in flames with large temperature and concentration gradients as well as in sooting environments. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN effect KW - NITRIC oxide KW - ATMOSPHERIC pressure KW - RESONANCE KW - ELECTRON beams N1 - Accession Number: 25426735; Chai, N. 1 Kulatilaka, W.D. 1 Naik, S.V. 1; Email Address: naiks@ecn.purdue.edu Laurendeau, N.M. 1 Lucht, R.P. 1 Kuehner, J.P. 2 Roy, S. 3 Katta, V.R. 3 Gord, J.R. 4; Affiliation: 1: School of Mechanical Engineering, Purdue University, West Lafayette 47907 USA 2: Department of Physics and Engineering, Washington & Lee University, Lexington 24450 USA 3: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road Dayton 45440 USA 4: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson AFB 45433 USA; Source Info: Jun2007, Vol. 88 Issue 1, p141; Subject Term: RAMAN effect; Subject Term: NITRIC oxide; Subject Term: ATMOSPHERIC pressure; Subject Term: RESONANCE; Subject Term: ELECTRON beams; Number of Pages: 10p; Illustrations: 1 Color Photograph, 2 Diagrams, 7 Graphs; Document Type: Article L3 - 10.1007/s00340-007-2647-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25426735&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sabelkin, V. AU - Mall, S. AU - Hansen, M.A. AU - Vandawaker, R.M. AU - Derriso, M. T1 - Investigation into cracked aluminum plate repaired with bonded composite patch JO - Composite Structures JF - Composite Structures Y1 - 2007/06/15/ VL - 79 IS - 1 M3 - Article SP - 55 EP - 66 SN - 02638223 AB - Abstract: Several parameters/factors related to mechanical and fatigue behaviors of a cracked 7075-T6 aluminum panel repaired with one-sided adhesively bonded composite patch were studied by a combined experimental–analytical approach. These were strain distribution, out-of-plane deformation and residual strength along with crack growth behavior. The effects of cool-down temperature during patch bonding, disbond and bending moment were also investigated. Residual thermal stresses, developed during patch bonding, requires the knowledge of temperature at which adhesive becomes effective in creating a bond between the specimen and patch. This can be determined through the out-of-plane deformation of the repaired panel. A bending moment is developed upon application of axial load due to initial out-of-plane deformation of the repaired panel with one-sided bonded patch. This can be also determined from the out-of-plane deformation. Further, the bending moment and temperature change during patch curing have a relatively more effect on the out-of-plane deformation than on the in-plane strain of the repaired panel. The disbond does not affect the out-of-plane deformation and in-plane strain except in their vicinity. Crack length has a small effect upon the in-plane strain and out-of-plane deformation. The stress intensity factor varies along the thickness of the repaired panel; however, crack growth rate was primarily dominated by stress intensity factor near the bonded patch side of the thin repaired panel in the present study. The bonded patch repair of a cracked panel provides a considerable increase in the residual strength as well as fatigue life. [Copyright &y& Elsevier] AB - Copyright of Composite Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM alloys KW - STRAINS & stresses (Mechanics) KW - FINITE element method KW - BENDING moment KW - Aluminum alloy KW - Bonded composite patch repair KW - Crack growth KW - Cracked plate KW - Finite element analysis KW - Residual strength N1 - Accession Number: 23363098; Sabelkin, V. 1 Mall, S. 1; Email Address: Shankar.Mall@afit.edu Hansen, M.A. 1 Vandawaker, R.M. 2 Derriso, M. 2; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH, United States 2: Air Vehicles Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, United States; Source Info: Jun2007, Vol. 79 Issue 1, p55; Subject Term: ALUMINUM alloys; Subject Term: STRAINS & stresses (Mechanics); Subject Term: FINITE element method; Subject Term: BENDING moment; Author-Supplied Keyword: Aluminum alloy; Author-Supplied Keyword: Bonded composite patch repair; Author-Supplied Keyword: Crack growth; Author-Supplied Keyword: Cracked plate; Author-Supplied Keyword: Finite element analysis; Author-Supplied Keyword: Residual strength; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.compstruct.2005.11.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23363098&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pradhan, Basudev AU - Sharma, Ashwani K. AU - Ray, Asim K. T1 - Conduction studies on chemical bath-deposited nanocrystalline CdS thin films JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2007/06/15/ VL - 304 IS - 2 M3 - Article SP - 388 EP - 392 SN - 00220248 AB - Abstract: Chemically pure, stoichiometric cadmium sulphide (CdS) films were produced by the chemical bath deposition (CBD) method on suitably cleaned silicon (Si) wafer and indium–tin oxide (ITO) substrates at room temperature. The nanocrystalline film was found to be hexagonal in structure with the preferential orientation along the (002) plane. Variable-range hopping conduction through 66nm thick CdS films on ITO substrates was found to be responsible at the low voltage while space charge-limited conduction became dominant at a relatively high bias voltage. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON crystals KW - STOICHIOMETRY KW - NANOCRYSTALS KW - CRYSTAL growth KW - A1. Nanostrctures KW - A3. Polycrystalline deposition KW - B2. Semiconducting II–VI materials KW - B3. Solar cells N1 - Accession Number: 25108041; Pradhan, Basudev 1 Sharma, Ashwani K. 2 Ray, Asim K. 3; Email Address: a.k.ray@qmul.ac.uk; Affiliation: 1: Department of Solid State Physics, Indian Association for the Cultivation of Science, Kolkata 700032, India 2: Space Vehicles Directorate, Air Force Research Laboratory, 3550 Aberdeen Avenue, SE Kirtland AFB, NM 87117, USA 3: Nanotechnology Research Laboratories, Department of Materials, Queen Mary University of London, London E1 4NS, UK; Source Info: Jun2007, Vol. 304 Issue 2, p388; Subject Term: SILICON crystals; Subject Term: STOICHIOMETRY; Subject Term: NANOCRYSTALS; Subject Term: CRYSTAL growth; Author-Supplied Keyword: A1. Nanostrctures; Author-Supplied Keyword: A3. Polycrystalline deposition; Author-Supplied Keyword: B2. Semiconducting II–VI materials; Author-Supplied Keyword: B3. Solar cells; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jcrysgro.2007.03.041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25108041&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kulatilaka, Waruna D. AU - Chai, Ning AU - Naik, Sameer V. AU - Roy, Sukesh AU - Laurendeau, Normand M. AU - Lucht, Robert P. AU - Kuehner, Joel P. AU - Gord, James R. T1 - Effects of pressure variations on electronic-resonance-enhanced coherent anti-Stokes Raman scattering of nitric oxide JO - Optics Communications JF - Optics Communications Y1 - 2007/06/15/ VL - 274 IS - 2 M3 - Article SP - 441 EP - 446 SN - 00304018 AB - Abstract: The effects of pressure variations on the electronic-resonance-enhanced coherent anti-Stokes Raman scattering (ERE-CARS) signal of nitric oxide (NO) were studied at pressures ranging from 0.1 to 8bar. ERE-CARS signals were recorded in a gas cell filled with a mixture of 300ppm NO in N2 buffer gas at room temperature. The ERE-CARS signal was found to increase with rising pressure up to 2bar and to remain nearly constant thereafter. The spectra recorded at different cell pressures were modeled using a modified version of the Sandia CARSFT code. Laser-saturation effects were accounted for by systematically varying the theoretical ultraviolet probe-laser linewidth. Excellent agreement was obtained between theory and experiment for the pressure-scaling behavior of the ERE-CARS signal of NO. This finding, along with a negligible influence of electronic quenching on the ERE-CARS signal, provides strong incentive for the application of ERE-CARS to measurements of NO concentrations in high-pressure combustion environments. [Copyright &y& Elsevier] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN effect KW - RESONANCE KW - NITROGEN compounds KW - SPECTRUM analysis N1 - Accession Number: 24868425; Kulatilaka, Waruna D. 1; Email Address: wdkulat@sandia.gov Chai, Ning 1 Naik, Sameer V. 1 Roy, Sukesh 2 Laurendeau, Normand M. 1 Lucht, Robert P. 1 Kuehner, Joel P. 3 Gord, James R. 4; Affiliation: 1: School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, United States 2: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, OH 45440, United States 3: Department of Physics and Engineering, Washington and Lee University, Lexington, VA 24450, United States 4: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, OH 45433, United States; Source Info: Jun2007, Vol. 274 Issue 2, p441; Subject Term: RAMAN effect; Subject Term: RESONANCE; Subject Term: NITROGEN compounds; Subject Term: SPECTRUM analysis; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.optcom.2007.02.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24868425&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jeffery T. Stricker AU - Anna D. Gudmundsdóttir AU - Adam P. Smith AU - Barney E. Taylor AU - Michael F. Durstock T1 - Fabrication of Organic Thin-Film Transistors Using Layer-by-Layer Assembly. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2007/06/14/ VL - 111 IS - 23 M3 - Article SP - 6322 EP - 6326 SN - 15206106 AB - Layer-by-layer assembly is presented as a deposition technique for the incorporation of ultrathin gate dielectric layers into thin-film transistors utilizing a highly doped organic active layer. This deposition technique enables the fabrication of device structures with a controllable gate dielectric thickness. In particular, devices with a dielectric layer comprised of poly(allylamine hydrochloride)/poly(acrylic acid) (PAH/PAA) bilayer films were fabricated to examine the properties of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) as the transistor active layer. The transistor Ionoffratio and switching speed are shown to be controlled by the gate bias, which is dependent upon the voltage applied and the number of bilayers deposited for the gate dielectric. The devices operate in the depletion mode as a result of dedoping of the active layer with the application of a positive gate bias. The depletion and recovery rate are highly dependent on the level of hydration in the film and the environment under which the device is operated. These observations are consistent with an electrochemical dedoping of the conducting polymer during operation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORGANIC thin films KW - TRANSISTORS KW - DOPED semiconductors KW - CONDUCTING polymers N1 - Accession Number: 25324186; Jeffery T. Stricker 1 Anna D. Gudmundsdóttir 1 Adam P. Smith 1 Barney E. Taylor 1 Michael F. Durstock 1; Affiliation: 1: Department of Chemistry, University of Cincinnati, Cincinnati, Ohio, Air Force Research Laboratory,Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio, UES, Inc., Beavercreek, Ohio,and University of Dayton Research Institute, Dayton, Ohio; Source Info: Jun2007, Vol. 111 Issue 23, p6322; Subject Term: ORGANIC thin films; Subject Term: TRANSISTORS; Subject Term: DOPED semiconductors; Subject Term: CONDUCTING polymers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25324186&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baker, C.C. AU - Chromik, R.R. AU - Wahl, K.J. AU - Hu, J.J. AU - Voevodin, A.A. T1 - Preparation of chameleon coatings for space and ambient environments JO - Thin Solid Films JF - Thin Solid Films Y1 - 2007/06/13/ VL - 515 IS - 17 M3 - Article SP - 6737 EP - 6743 SN - 00406090 AB - Abstract: Tribological coatings of yttria-stabilized zirconia (YSZ), Au, diamond like carbon (DLC) and MoS2 were synthesized using magnetron assisted pulsed laser deposition. The coatings were synthesized in four-component and three-component combinations that included YSZ/Au/DLC/MoS2, YSZ/Au/MoS2, and YSZ/Au/DLC. A range of coating compositions was studied to explore coating optimization for low friction in varying environments (dry, humid and high temperature). For four-component YSZ/Au/DLC/MoS2 coatings, the optimal compositions for friction adaptation between dry nitrogen and humid air included relatively high concentrations of the soft phase, Au (>20 at.%), and low amounts of the hard phases, DLC and YSZ. Ex situ Raman spectroscopy analysis indicates that friction adaptation involves a combination of both lubricating species, MoS2 and carbon, where transitions of DLC to graphitic-carbon and amorphous MoS2 to its hexagonal phase occur after cycling between both room temperature humid air and dry nitrogen. In large carbon concentrations (>30 at.%), the DLC component was found to be detrimental for friction in dry nitrogen and humid air, but promoted a longer coating wear life at 500 °C. The three-component coating of YSZ/Au/MoS2 performed well in both dry nitrogen and humid air, suggesting a synergism between Au and MoS2, where carbon was not necessary for lubrication in humid air. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE coatings KW - ZIRCONIUM oxide KW - CARBON KW - PULSED laser deposition KW - Aerospace KW - Coatings KW - Nanocomposite KW - Tribology N1 - Accession Number: 24969129; Baker, C.C. 1,2; Email Address: colin.baker@nrl.navy.mil Chromik, R.R. 1,3 Wahl, K.J. 3 Hu, J.J. 2 Voevodin, A.A. 2; Affiliation: 1: North Carolina State University, Department of Physics, Raleigh, NC 27695, United States 2: U.S. Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, OH 45433, United States 3: U.S. Naval Research Laboratory, Code 6176, Tribology Section, Washington, DC 20375, United States; Source Info: Jun2007, Vol. 515 Issue 17, p6737; Subject Term: SURFACE coatings; Subject Term: ZIRCONIUM oxide; Subject Term: CARBON; Subject Term: PULSED laser deposition; Author-Supplied Keyword: Aerospace; Author-Supplied Keyword: Coatings; Author-Supplied Keyword: Nanocomposite; Author-Supplied Keyword: Tribology; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.tsf.2007.02.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24969129&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pantha, B. N. AU - Dahal, R. AU - Nakarmi, M. L. AU - Nepal, N. AU - Li, J. AU - Lin, J. Y. AU - Jiang, H. X. AU - Paduano, Q. S. AU - Weyburne, David T1 - Correlation between optoelectronic and structural properties and epilayer thickness of AlN. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/06/11/ VL - 90 IS - 24 M3 - Article SP - 241101 PB - American Institute of Physics SN - 00036951 AB - AlN epilayers were grown by metal organic chemical vapor deposition on sapphire substrates. X-ray diffraction measurements revealed that the threading dislocation (TD) density, in particular, the edge TD density, decreases considerably with increasing the epilayer thickness. Photoluminescence results showed that the intensity ratio of the band edge emission to the defect related emission increases linearly with increasing the epilayer thickness. Moreover, the dark current of the fabricated AlN metal-semiconductor-metal deep ultraviolet (DUV) photodetectors decreases drastically with the AlN epilayer thickness. The results suggested that one effective way for attaining DUV optoelectronic devices with improved performance is to increase the thickness of the AlN epilayer template, which results in the reduction of the TD density. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM nitride KW - METAL organic chemical vapor deposition KW - SAPPHIRES KW - X-ray diffraction KW - DISLOCATIONS in crystals KW - OPTOELECTRONICS N1 - Accession Number: 25536273; Pantha, B. N. 1 Dahal, R. 1 Nakarmi, M. L. 1 Nepal, N. 1 Li, J. 1 Lin, J. Y. 1 Jiang, H. X. 1 Paduano, Q. S. 2 Weyburne, David 2; Affiliation: 1: Department of Physics, Kansas State University, Manhattan, Kansas 66506-2601 2: Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731; Source Info: 6/11/2007, Vol. 90 Issue 24, p241101; Subject Term: ALUMINUM nitride; Subject Term: METAL organic chemical vapor deposition; Subject Term: SAPPHIRES; Subject Term: X-ray diffraction; Subject Term: DISLOCATIONS in crystals; Subject Term: OPTOELECTRONICS; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.2747662 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25536273&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Leiweke, Robert J. AU - Ganguly, Biswa N. T1 - Effects of pulsed-excitation applied voltage rise time on argon metastable production efficiency in a high pressure dielectric barrier discharge. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/06/11/ VL - 90 IS - 24 M3 - Article SP - 241501 PB - American Institute of Physics SN - 00036951 AB - The authors have quantified the effect of pressure scaling on Ar metastable production efficiency in a dielectric barrier discharge with and without dielectric component losses. Estimates of the volume averaged deposited energy were performed for both short or long rise time voltage pulses, using the same total applied voltages of ∼10 and ∼150 ns, respectively. The metastable production efficiencies of long-pulse discharge exhibit smaller decrease over the 100–500 Torr pressure range, compared to those of the short-pulse one to the extent that the efficiency values and scaling for both cases are essentially the same within the experimental uncertainty. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARGON KW - ELECTRIC discharges KW - ELECTRIC potential KW - DIELECTRIC separation KW - ELECTRODES N1 - Accession Number: 25536283; Leiweke, Robert J. 1 Ganguly, Biswa N. 1; Affiliation: 1: Air Force Research Laboratory, WPAFB, Ohio 45433-7919; Source Info: 6/11/2007, Vol. 90 Issue 24, p241501; Subject Term: ARGON; Subject Term: ELECTRIC discharges; Subject Term: ELECTRIC potential; Subject Term: DIELECTRIC separation; Subject Term: ELECTRODES; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.2748324 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25536283&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bezinger, A. AU - Liu, H.C. AU - Aslan, B. AU - Buchanan, M. AU - Springthorpe, A.J. AU - Poole, P.J. AU - Cardimona, D.A. AU - Brown, G.J. T1 - Dual spectral InGaAs/InP quantum-well infrared photodetector focal plane array. JO - Electronics Letters JF - Electronics Letters Y1 - 2007/06/07/ VL - 43 IS - 12 M3 - Article SP - 685 EP - 686 PB - Institution of Engineering & Technology SN - 00135194 AB - The realisation of an InGaAs/InP quantum-well infrared photodetector focal plane array imaging device is reported. The long-wave infrared response is based on the intersubband transition (intraband) in the quantum wells. In addition, a near infrared (interband) response is demonstrated. This work shows the potential of the InGaAs/InP materials system for multi-spectral imaging applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTOELECTRONIC devices KW - IMAGING systems KW - ENERGY bands KW - ELECTRIC waves KW - OPTOELECTRONICS N1 - Accession Number: 25334378; Bezinger, A. 1 Liu, H.C. 1; Email Address: h.c.liu@nrc.ca Aslan, B. 1 Buchanan, M. 1 Springthorpe, A.J. 1 Poole, P.J. 1 Cardimona, D.A. 2 Brown, G.J. 3; Affiliation: 1: Institute for Microstructural Sciences, National Research Council Ottawa, Ontario, Canada 2: Air Force Research Laboratory, Kirtland AFB, NM, USA 3: Air Force Research Laboratory, OH, USA; Source Info: 6/7/2007, Vol. 43 Issue 12, p685; Subject Term: OPTOELECTRONIC devices; Subject Term: IMAGING systems; Subject Term: ENERGY bands; Subject Term: ELECTRIC waves; Subject Term: OPTOELECTRONICS; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 2p; Illustrations: 1 Illustration, 1 Graph; Document Type: Article L3 - 10.1049/el:20070966 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25334378&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hood, Andrew AU - Delaunay, Pierre-Yves AU - Hoffman, Darin AU - Nguyen, Binh-Minh AU - Wei, Yajun AU - Razeghi, Manijeh AU - Nathan, Vaidya T1 - Near bulk-limited R0A of long-wavelength infrared type-II InAs/GaSb superlattice photodiodes with polyimide surface passivation. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/06/04/ VL - 90 IS - 23 M3 - Article SP - 233513 PB - American Institute of Physics SN - 00036951 AB - Effective surface passivation of type-II InAs/GaSb superlattice photodiodes with cutoff wavelengths in the long-wavelength infrared is presented. A stable passivation layer, the electrical properties of which do not change as a function of the ambient environment nor time, has been prepared by a solvent-based surface preparation, vacuum desorption, and the application of an insulating polyimide layer. Passivated photodiodes, with dimensions ranging from 400×400 to 25×25 μm2, with a cutoff wavelength of ∼11 μm, exhibited near bulk-limited R0A values of ∼12 Ω cm2, surface resistivities in excess of 104 Ω cm, and very uniform current-voltage behavior at 77 K. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS research KW - PHOTODIODES KW - COATING processes KW - SURFACES (Technology) KW - WAVELENGTHS KW - SUPERLATTICES KW - POLYIMIDES KW - ELECTRICITY -- Research N1 - Accession Number: 25449063; Hood, Andrew 1 Delaunay, Pierre-Yves 1 Hoffman, Darin 1 Nguyen, Binh-Minh 1 Wei, Yajun 1 Razeghi, Manijeh 1 Nathan, Vaidya 2; Affiliation: 1: Center for Quantum Devices, Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, Illinois 60208 2: Air Force Research Laboratory, AFRL/VSSS, Kirtland, New Mexico 87117; Source Info: 6/4/2007, Vol. 90 Issue 23, p233513; Subject Term: PHYSICS research; Subject Term: PHOTODIODES; Subject Term: COATING processes; Subject Term: SURFACES (Technology); Subject Term: WAVELENGTHS; Subject Term: SUPERLATTICES; Subject Term: POLYIMIDES; Subject Term: ELECTRICITY -- Research; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.2747172 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25449063&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Levin, G. A. AU - Barnes, P. N. AU - Amemiya, N. T1 - Low ac Loss Multifilament Coated Conductors. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2007/06/03/Jun2007 Part 3 of 3 VL - 17 IS - 2 M3 - Article SP - 3148 EP - 3150 SN - 10518223 AB - We report the magnetization losses in an experimental multifilament coated conductor. A 4 mm wide and 10 cm long YBCO coated conductor was subdivided into eight 0.5 mm wide filaments by laser ablation and subjected to post-ablation treatment. As the result, the hysteresis loss was reduced, as expected, in proportion to the width of the filaments. However, the coupling losses were reduced dramatically, and became practically negligible, in the range of a sweep rate up to 20 T/s. This represents a drastic improvement on previous multifilament conductors in which often the coupling losses became equal to the hysteresis loss at a sweep rate as low as 3–4 T/s. These results demonstrate that there is an effective and practical way to suppress coupling losses in coated multifilament conductors. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALTERNATING currents KW - ELECTRIC power systems -- Electric losses KW - ELECTRIC conductors KW - METALS -- Mechanical properties KW - SUPERCONDUCTORS KW - SUPERCONDUCTIVITY KW - MICROMACHINING KW - METALLIC oxides KW - OXIDATION KW - AC loss KW - coated conductors KW - coupling loss N1 - Accession Number: 26294413; Levin, G. A. 1; Email Address: george.levin@wpafb.af.mil Barnes, P. N. 2 Amemiya, N. 3; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469 USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA 3: Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya, Yokohama 240-8501, Japan; Source Info: Jun2007 Part 3 of 3, Vol. 17 Issue 2, p3148; Subject Term: ALTERNATING currents; Subject Term: ELECTRIC power systems -- Electric losses; Subject Term: ELECTRIC conductors; Subject Term: METALS -- Mechanical properties; Subject Term: SUPERCONDUCTORS; Subject Term: SUPERCONDUCTIVITY; Subject Term: MICROMACHINING; Subject Term: METALLIC oxides; Subject Term: OXIDATION; Author-Supplied Keyword: AC loss; Author-Supplied Keyword: coated conductors; Author-Supplied Keyword: coupling loss; Number of Pages: 3p; Illustrations: 2 Diagrams, 1 Graph; Document Type: Article L3 - 10.1109/TASC.2007.899012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26294413&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Polak, M. AU - Kvitkovic, J. AU - Mozola, P. AU - Barnes, Paul N. AU - Levin, George A. T1 - Characterization of Individual Filaments in a Multifilamentary YBCO Coated Conductor. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2007/06/03/Jun2007 Part 3 of 3 VL - 17 IS - 2 M3 - Article SP - 3163 EP - 3166 SN - 10518223 AB - Striation of wide YBCO coated conductor tapes is necessary to reduce the hysteresis losses. However, the processes used to striate the films may adversely affect the overall critical current of the tape not only by simple removal of superconducting material, but by introducing additional defects. We studied the transport properties of individual filaments of a filamentary YBCO tape on Hastelloy substrate striated by laser ablation. The tape consisted of 24 parallel filaments 0.5 mm wide, covered by thin Ag layer. I–V curves on 9 cm long filament sections as well as the changes of the critical current along the filament were measured at 77 K in magnetic fields up to 70 mT. 8 of 24 filaments were experimentally characterized by the mean value of the critical current and the associated n-value. The best filament had a critical current of ∼7 A at 1 microvolt/cm and B = 0. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductors KW - CRITICAL currents KW - SUPERCONDUCTORS KW - SUPERCONDUCTIVITY KW - MAGNETIC fields KW - ALTERNATING currents KW - MICROSCOPY KW - MAGNETIC induction KW - ELECTRIC currents KW - Critical current KW - Hall probe KW - multifilament YBCO coated conductor N1 - Accession Number: 26294417; Polak, M. 1; Email Address: elekpola@savba.sk Kvitkovic, J. 1; Email Address: elekkvit@savba.sk Mozola, P. 1; Email Address: elekpamo@savba.sk Barnes, Paul N. 2; Email Address: paul.barnes@wpath.af.mil Levin, George A. 2; Email Address: george.levin@wpafb.af.mil; Affiliation: 1: Institute of Electrical Engineering, Slovak Academy of Sciences, Bratislava, Slovak Republic 2: Air Force Research Laboratory, WP Air Force Base, 01145433-7919 USA; Source Info: Jun2007 Part 3 of 3, Vol. 17 Issue 2, p3163; Subject Term: ELECTRIC conductors; Subject Term: CRITICAL currents; Subject Term: SUPERCONDUCTORS; Subject Term: SUPERCONDUCTIVITY; Subject Term: MAGNETIC fields; Subject Term: ALTERNATING currents; Subject Term: MICROSCOPY; Subject Term: MAGNETIC induction; Subject Term: ELECTRIC currents; Author-Supplied Keyword: Critical current; Author-Supplied Keyword: Hall probe; Author-Supplied Keyword: multifilament YBCO coated conductor; Number of Pages: 4p; Illustrations: 2 Diagrams, 7 Graphs; Document Type: Article L3 - 10.1109/TASC.2007.898266 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26294417&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kwon, C. AU - Young, J. L. AU - James, R. G. AU - Levin, George A. AU - Haugan, Timothy J. AU - Barnes, Paul N. T1 - Local Current Transport and Current Sharing Between Filaments in Striated Coated Conductors With Artificial Defects. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2007/06/03/Jun2007 Part 3 of 3 VL - 17 IS - 2 M3 - Article SP - 3191 EP - 3194 SN - 10518223 AB - Multifilamentary YBCO coated conductor with fishnet striation pattern is investigated by transport measurements and scanning laser microscopy (SLM). Each filament is clearly visible in SLM images, and higher current flows along the edges of filaments. After initial measurements, an incision is made to disable two filaments and to investigate the changes in the current transport, the current sharing, and the dissipation patterns. Current sharing and redistribution are clearly observed among the filaments and at the weak links. We find that the dissipation is mainly caused by local current crowding. Since the current is to be shared among intact filaments, the most impacted area is the filaments closer to the disabled ones which have to carry higher current. The other susceptible area is the weak links where the current redistributes and the increased current density is expected. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductors KW - ELECTRIC currents KW - FIBERS KW - METAL fibers KW - FISHING nets KW - MICROSCOPY KW - SCANNING electron microscopy KW - OPTICAL images KW - OPTICS KW - Dissipation pattern KW - filamentary coated conductor KW - scanning laser microscopy N1 - Accession Number: 26294424; Kwon, C. 1; Email Address: ckwon@csulb.edu Young, J. L. 1; Email Address: jyoung4@csulb.edu James, R. G. 1; Email Address: rjames@csulb.edu Levin, George A. 2; Email Address: george.levin@wpafb.af.mil Haugan, Timothy J. 2; Email Address: timothy.haugan@wpafb.af.mil Barnes, Paul N. 2; Email Address: paul.barnes@wpafb.af.mil; Affiliation: 1: Department of Physics and Astronomy, California State University, Long Beach, CA 90840 USA 2: Air Force Research Laboratory, WPAFB, OH 45433-7919 USA; Source Info: Jun2007 Part 3 of 3, Vol. 17 Issue 2, p3191; Subject Term: ELECTRIC conductors; Subject Term: ELECTRIC currents; Subject Term: FIBERS; Subject Term: METAL fibers; Subject Term: FISHING nets; Subject Term: MICROSCOPY; Subject Term: SCANNING electron microscopy; Subject Term: OPTICAL images; Subject Term: OPTICS; Author-Supplied Keyword: Dissipation pattern; Author-Supplied Keyword: filamentary coated conductor; Author-Supplied Keyword: scanning laser microscopy; NAICS/Industry Codes: 314990 All other textile product mills; Number of Pages: 4p; Illustrations: 3 Diagrams, 1 Graph; Document Type: Article L3 - 10.1109/TASC.2007.897914 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26294424&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maiorov, B. AU - Jia, Q. X. AU - Zhou, H. AU - Wang, H. AU - Li, Y. AU - Kursunovic, A. AU - MacManus-Driscoll, J. L. AU - Haugan, T. J. AU - Barnes, P. N. AU - Foltyn, S. R. AU - Civale, L. T1 - Effects of the Variable Lorentz Force on the Critical Current in Anisotropic Superconducting Thin Films. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2007/06/03/Jun2007 Part 3 of 3 VL - 17 IS - 2 M3 - Article SP - 3697 EP - 3700 SN - 10518223 AB - When a current is applied perpendicular to the vortex lattice (VL), Lorentz force may cause the VL to drift and flux-flow dissipation is observed. When the current is parallel to the applied magnetic field in a Force-Free (FF) configuration, a dissipation is also observed but at higher values of applied current. It has been suggested that pinning as well as free surfaces play an important role in the stabilization of the VL in the FF configuration. In YBa2Cu3O7 thin films, FF configurations can be obtained when H ∥ ab with the current flowing parallel to the ab-planes. In this work we study the influence of thickness, growth method and pinning centers on the dissipation mechanism at Variable Lorentz Force and FF configurations. Comparisons of experiments done at Maximum and Variable Lorentz Force show that there are two pinning regimes when the field is rotated in these configurations; one consistent with only a decrease in the applied force, indicated by the overlap of the power law exponent of the current-voltage curves as the field is rotated toward the ab-planes, and another very close to the ab-planes, where the dissipation characteristics change. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - SUPERCONDUCTIVITY KW - CRITICAL currents KW - SUPERCONDUCTORS KW - LATTICE dynamics KW - MAGNETIC fields KW - SOLID state electronics KW - ELECTRIC currents KW - FLUX pinning KW - Critical current KW - Lorentz force KW - superconducting films KW - superconducting tapes KW - vortex pinning N1 - Accession Number: 26294551; Maiorov, B. 1; Email Address: maiorov@lanl.gov Jia, Q. X. 1 Zhou, H. 1 Wang, H. 1,2 Li, Y. Kursunovic, A. 3 MacManus-Driscoll, J. L. 1,3 Haugan, T. J. 4 Barnes, P. N. 4 Foltyn, S. R. 1 Civale, L. 1; Affiliation: 1: Superconductivity Technology Center, K763, Los Alamos National Laboratory, Los Alamos, NM 87545 USA 2: Texas A&M University, College Station, Texas, USA 3: University of Cambridge, Cambridge, UK 4: Wright-Patterson Air Force Research Laboratory, USA; Source Info: Jun2007 Part 3 of 3, Vol. 17 Issue 2, p3697; Subject Term: THIN films; Subject Term: SUPERCONDUCTIVITY; Subject Term: CRITICAL currents; Subject Term: SUPERCONDUCTORS; Subject Term: LATTICE dynamics; Subject Term: MAGNETIC fields; Subject Term: SOLID state electronics; Subject Term: ELECTRIC currents; Subject Term: FLUX pinning; Author-Supplied Keyword: Critical current; Author-Supplied Keyword: Lorentz force; Author-Supplied Keyword: superconducting films; Author-Supplied Keyword: superconducting tapes; Author-Supplied Keyword: vortex pinning; Number of Pages: 4p; Illustrations: 1 Diagram, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1109/TASC.2007.898364 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26294551&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varanasi, Chakrapani V. AU - Nalladega, Vijay AU - Sathish, S. AU - Haugan, Timothy AU - Barnes, Paul N. T1 - Use of Ultrasonic Force Microscopy to Image the Interior Nanoparticles in YBa2Cu3O7-x Films. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2007/06/03/Jun2007 Part 3 of 3 VL - 17 IS - 2 M3 - Article SP - 3709 EP - 3712 SN - 10518223 AB - Nanoparticles present in the interior of YBa2Cu3O7-x (YBCO) films were successfully imaged for the first time by using an ultrasonic force microscope (UFM), which can also operate as a conventional atomic force microscope (AFM). Nanoparticles of Y2BaCuO5 and BaSnO3 were introduced into YBCO films using pulsed laser ablation to improve critical current density via enhanced flux pinning. The scanning speed and ultrasonic frequencies in the range of 300–500 kHz were optimized for each sample such that the nanometer sized particles on the surface as well as from the film interior can be imaged with good contrast and resolution. UFM and AFM scans taken of the same locations were compared to show the advantages of using UFM over AFM. We demonstrate that UFM can be used nondestructively to both characterize the interior nanoparticles introduced in YBCO films and provide high resolution images of the screw dislocation induced terraces present in the films. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYOMICROSCOPY KW - NANOPARTICLES KW - MAGNETIC films KW - LASER ablation KW - ELECTRIC currents KW - SUPERCONDUCTIVITY KW - SUPERCONDUCTORS -- Magnetic properties KW - CRITICAL currents KW - MAGNETIC flux KW - Fluxpinning KW - nanoparticles KW - nondestructive testing KW - ultrasonic force microscopy KW - YBCO coated conductors N1 - Accession Number: 26294554; Varanasi, Chakrapani V. 1; Email Address: chakrapani.varanasi@wpafb.af.mil Nalladega, Vijay 1 Sathish, S. 1 Haugan, Timothy 2 Barnes, Paul N. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469 USA 2: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, OH 45433 USA; Source Info: Jun2007 Part 3 of 3, Vol. 17 Issue 2, p3709; Subject Term: CRYOMICROSCOPY; Subject Term: NANOPARTICLES; Subject Term: MAGNETIC films; Subject Term: LASER ablation; Subject Term: ELECTRIC currents; Subject Term: SUPERCONDUCTIVITY; Subject Term: SUPERCONDUCTORS -- Magnetic properties; Subject Term: CRITICAL currents; Subject Term: MAGNETIC flux; Author-Supplied Keyword: Fluxpinning; Author-Supplied Keyword: nanoparticles; Author-Supplied Keyword: nondestructive testing; Author-Supplied Keyword: ultrasonic force microscopy; Author-Supplied Keyword: YBCO coated conductors; Number of Pages: 4p; Illustrations: 4 Diagrams, 1 Graph; Document Type: Article L3 - 10.1109/TASC.2007.897920 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26294554&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barnes, Paul N. AU - Kell, Joseph W. AU - Harrison, Brandon C. AU - Haugan, Timothy J. AU - Burke, Jack L. AU - Varanasi, Chakrapani V. T1 - Nanoparticulate Flux Pinning Centers for YBa2Cu3O7-δ Films. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2007/06/03/Jun2007 Part 3 of 3 VL - 17 IS - 2 M3 - Article SP - 3717 EP - 3719 SN - 10518223 AB - YBa2Cu3O7-δ high temperature superconductors can maintain fairly high critical current densities (Jc) with increasing magnetic field. This in-field performance can be further improved upon by incorporating nanoparticulate magnetic flux pinning centers into the superconductors. This short paper briefly discusses and compares recent efforts by the U.S. Air Force Research Laboratory to incorporate insulating nanoparticles into the YBCO superconducting thin films by pulsed laser deposition. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUX pinning KW - HIGH temperature superconductors KW - MAGNETIC flux KW - NANOPARTICLES KW - MAGNETIC films KW - ELECTRIC currents KW - MAGNETIC fields KW - SUPERCONDUCTIVITY KW - PULSED laser deposition KW - Flux pinning KW - high-temperature superconductors (HTS) KW - rare earth doping KW - YBCO N1 - Accession Number: 26294556; Barnes, Paul N. 1; Email Address: paul.barnes@wpafb.af.mil Kell, Joseph W. 1; Email Address: joseph.kell@wpafb.af.mil Harrison, Brandon C. 1; Email Address: brandon.harrison@wpatb.af.mil Haugan, Timothy J. 1; Email Address: timothy.haugan@wpath.af.mil Burke, Jack L. 2; Email Address: jack.burke@wpafb.af.mil Varanasi, Chakrapani V. 2; Email Address: chakrapani.varanasi@wpatb.af.mil; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA 2: University of Dayton Research Institute, Dayton, OH 45469 USA; Source Info: Jun2007 Part 3 of 3, Vol. 17 Issue 2, p3717; Subject Term: FLUX pinning; Subject Term: HIGH temperature superconductors; Subject Term: MAGNETIC flux; Subject Term: NANOPARTICLES; Subject Term: MAGNETIC films; Subject Term: ELECTRIC currents; Subject Term: MAGNETIC fields; Subject Term: SUPERCONDUCTIVITY; Subject Term: PULSED laser deposition; Author-Supplied Keyword: Flux pinning; Author-Supplied Keyword: high-temperature superconductors (HTS); Author-Supplied Keyword: rare earth doping; Author-Supplied Keyword: YBCO; Number of Pages: 3p; Illustrations: 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1109/TASC.2007.899016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26294556&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, Timothy J. AU - Barnes, Paul N. AU - Campbell, Timothy A. AU - Pierce, Neal A. AU - Baca, F. Javier AU - Maartense, Iman T1 - Flux Pinning of Y-Ba-Cu-O Films Doped With BaZrO3 Nanoparticles by Multilayer and Single Target Methods. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2007/06/03/Jun2007 Part 3 of 3 VL - 17 IS - 2 M3 - Article SP - 3724 EP - 3728 SN - 10518223 AB - The superconducting properties of YBa2Cu3O7-δ (YBCO or 123) thin films doped with BaZrO3 (BZO) nanopartides by multilayer and single-target methods were studied and compared. Thin films of 123 + BZO were processed by pulsed laser deposition on LaA1O3 and SrTiO3 single crystal substrates. Multilayer (BZO0.6 nm-1.4/12315nm)19 structures were grown by alternating deposition from 123 and BZO targets, and BZO additions of 0–2 Vol% were deposited using (1231-xBZOx) single-targets. The multilayer and single-target methods of BZO addition caused significant differences of superconducting transition temperatures (Tc) measured by AC susceptibility, and critical current densities (Jc) measured by both magnetic and transport methods as a function of temperature (T), applied magnetic field (H) and angle of H field incidence (θ). Single-target films had almost linear decrease of Tc and self-field Jc with BZO vol% addition, and compared to multilayer films had lower Jc (77 K, H < 4 T) however had improved high-field properties for Jc (77 K, H > 4 T). Multilayer films had almost no decrease of Tc and self-field Jc for high BZO additions up to 10 Vol% and very strong peak of Jc(H//ab in — plane) and constant and high Jc(H,0 < θ < 80°). Single-target BZO-2 Vol% films had slightly enhanced Jc (H//c — axis), consistent with results by other authors. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUX pinning KW - THIN films KW - MAGNETIC fields KW - NANOPARTICLES KW - MAGNETIC films KW - PULSED laser deposition KW - SUPERCONDUCTIVITY KW - ELECTRIC currents KW - SUPERCONDUCTORS KW - SEMICONDUCTOR doping KW - Flux pinning KW - nanoparticle KW - superconductor KW - thin film KW - YBa2Cu3O7-x N1 - Accession Number: 26294558; Haugan, Timothy J. 1; Email Address: timothy.haugan@wpafb.af.mil Barnes, Paul N. 1 Campbell, Timothy A. 1 Pierce, Neal A. 1 Baca, F. Javier 1 Maartense, Iman 1; Affiliation: 1: Air Force Research Laboratory, Propulsion Directorate-AFRL/PRPG, Wright Patterson AFB, OH 45433-7251 USA; Source Info: Jun2007 Part 3 of 3, Vol. 17 Issue 2, p3724; Subject Term: FLUX pinning; Subject Term: THIN films; Subject Term: MAGNETIC fields; Subject Term: NANOPARTICLES; Subject Term: MAGNETIC films; Subject Term: PULSED laser deposition; Subject Term: SUPERCONDUCTIVITY; Subject Term: ELECTRIC currents; Subject Term: SUPERCONDUCTORS; Subject Term: SEMICONDUCTOR doping; Author-Supplied Keyword: Flux pinning; Author-Supplied Keyword: nanoparticle; Author-Supplied Keyword: superconductor; Author-Supplied Keyword: thin film; Author-Supplied Keyword: YBa2Cu3O7-x; Number of Pages: 5p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1109/TASC.2007.899342 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26294558&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nesterov, Vladimir N. AU - Sarkisov, Sergey S. AU - Curley, Michael J. AU - Urbas, Augustine T1 - 3,5-Bis[4-(dimethylamino)benzylidene]-1-propyl-4-piperidone: a prospective biophotonic material. JO - Acta Crystallographica: Section E (Wiley-Blackwell) JF - Acta Crystallographica: Section E (Wiley-Blackwell) Y1 - 2007/06// VL - 63 IS - 6 M3 - Article SP - o3043 EP - o3044 SN - 16005368 AB - In the title compound, C26H33N3O, the central heterocyclic ring exhibits a flattened boat conformation, with the N and the opposite C atom displaced from the plane of the other four C atoms. The dihedral angles between the planar part of the heterocycle and the two almost flat fragments which include the benzene rings and attached C atoms are 17.1 (1) and 14.8 (1)°. This conformation helps promote conjugation in the molecule. Bond-length distributions in the π-conjugated bridges and p-dimethylaminophenyl fragments show an alternation of single C—C and double C=C bond lengths. In the crystal structure, weak C—H...O hydrogen bonds link the molecules into ribbons along the b axis. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Crystallographica: Section E (Wiley-Blackwell) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PIPERIDONES KW - ORGANONITROGEN compounds KW - HETEROCYCLIC compounds KW - RING formation (Chemistry) KW - CHEMICAL bonds KW - HYDROGEN bonding KW - data-to-parameter ratio = 15.6 KW - mean σ(C-C) = 0.003 Å KW - R factor = 0.052 KW - single-crystal X-ray study KW - T = 100 K KW - wR factor = 0.134 N1 - Accession Number: 25439256; Nesterov, Vladimir N. 1; Email Address: vnesterov@nmhu.edu Sarkisov, Sergey S. 2 Curley, Michael J. 3 Urbas, Augustine 4; Affiliation: 1: Department of Natural Sciences, New Mexico Highlands University, Las Vegas, NM 87701, USA 2: SSS Optical Technologies, LLC, 515 Sparkman Drive, Suite 122, Huntsville, AL 35816, USA 3: Department of Physics, Alabama A & M University, Normal, AL 35762, USA 4: Air Force Research Laboratory/MLPJ, 3005 Hobson Way Bldg 651, Wright Patterson Air Force Base, OH 45433-7702, USA; Source Info: Jun2007, Vol. 63 Issue 6, po3043; Subject Term: PIPERIDONES; Subject Term: ORGANONITROGEN compounds; Subject Term: HETEROCYCLIC compounds; Subject Term: RING formation (Chemistry); Subject Term: CHEMICAL bonds; Subject Term: HYDROGEN bonding; Author-Supplied Keyword: data-to-parameter ratio = 15.6; Author-Supplied Keyword: mean σ(C-C) = 0.003 Å; Author-Supplied Keyword: R factor = 0.052; Author-Supplied Keyword: single-crystal X-ray study; Author-Supplied Keyword: T = 100 K; Author-Supplied Keyword: wR factor = 0.134; Number of Pages: 1p; Illustrations: 4 Diagrams, 2 Charts; Document Type: Article L3 - 10.1107/S1600536807024385 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25439256&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Christ, John A. AU - Abriola, Linda M. T1 - Modeling metabolic reductive dechlorination in dense non-aqueous phase liquid source-zones JO - Advances in Water Resources JF - Advances in Water Resources Y1 - 2007/06// VL - 30 IS - 6/7 M3 - Article SP - 1547 EP - 1561 SN - 03091708 AB - Abstract: Recent laboratory experimental evidence has suggested that bioremediation may be an attractive management strategy for dense non-aqueous phase liquid (DNAPL) source-zones. In particular, metabolic reductive dechlorination has been shown to reduce aqueous phase chlorinated ethene contaminant concentrations and enhance DNAPL dissolution, reducing source longevity. Transitioning this technology from the laboratory to the field will be facilitated by tools capable of simulating bioenhanced dissolution. This work presents a mathematical model for metabolic reductive dechlorination in a macroscale two-phase (aqueous-organic) environment. The model is implemented through adaptation of an existing multi-phase compositional simulator, which has been modified to incorporate eight chemical components and four microbial populations: a fermentative population, two dechlorinating populations, and a competitor population (e.g., methanogens). Monod kinetics, modified to incorporate electron donor thresholds, electron acceptor competition, and competitor inhibition, are used to simulate microbial growth and component degradation. The developed model is numerically verified and demonstrated through comparisons with published column-scale dechlorination data. Dechlorination kinetics, electron donor concentrations, and DNAPL saturation and distribution are all found to affect the extent of dissolution enhancement, with enhancements ranging from 1.0 to ∼1.9. Comparison of simulation results with those from a simplified analytic modeling approach suggest that the analytical model may tend to over-predict dissolution enhancement and fail to account for the transient nature of dissolution enhancement, leading to significant (70%) under-prediction of source longevity. [Copyright &y& Elsevier] AB - Copyright of Advances in Water Resources is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MIREX KW - MICROBIAL growth KW - MICROORGANISMS -- Population biology KW - BIOREMEDIATION KW - Dechlorination KW - Enhanced dissolution KW - Modeling KW - NAPL KW - PCE N1 - Accession Number: 24787414; Christ, John A. 1 Abriola, Linda M. 2; Email Address: Linda.Abriola@tufts.edu; Affiliation: 1: Department of Civil and Environmental Engineering, US Air Force Academy, CO 80840, United States 2: Department of Civil and Environmental Engineering, Tufts University, 200 College Avenue, 105 Anderson Hall, Medford, MA 02155, United States; Source Info: Jun2007, Vol. 30 Issue 6/7, p1547; Subject Term: MIREX; Subject Term: MICROBIAL growth; Subject Term: MICROORGANISMS -- Population biology; Subject Term: BIOREMEDIATION; Author-Supplied Keyword: Dechlorination; Author-Supplied Keyword: Enhanced dissolution; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: NAPL; Author-Supplied Keyword: PCE; NAICS/Industry Codes: 562910 Remediation Services; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.advwatres.2006.05.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24787414&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lindsey, Martin F. AU - McMullan, Richard J. AU - Gaitonde, Datta V. AU - Camberos, José A. T1 - Computational Study of Magnetogasdynamic Inlet Flow Control on a Flight-Scale Scramjet. JO - AIAA Journal JF - AIAA Journal Y1 - 2007/06// VL - 45 IS - 6 M3 - Article SP - 1258 EP - 1258 SN - 00011452 AB - Results of computational work demonstrating magnetogasdynamic flow control within the internal inlet of a fullscale, Mach 10 scramjet engine simulation are presented. As part of the analysis, a control volume approach with an electron beam ionization model is presented for the first time in the context of the established computational method used. We conclude that applying magnetogasdynamic interaction entirely upstream of a expansion-induced flow separation zone was not effective at improving the inlet efficiency. For most parameters tested, any pressure gains incurred in the region of electromagnetic interaction were all but negated by an additional sidewall expansion at the inlet throat. Magnetogasdynamic acceleration can efficiently reduce the net inlet drag in some cases while minimizing the increase in heat transfer and decrease in overall efficiency measures. Finally, placement of the electromagnetic interaction region near the wall was the most important factor in determining the wall heat transfer and proved to be a relatively efficient method for limiting drag increases. However, further work is recommended to determine the optimum distance from the wall to target the electron beam ionization. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS flow KW - SCRAMJET engines KW - ELECTRON beams KW - DRAG (Aerodynamics) KW - IONIZATION (Atomic physics) N1 - Accession Number: 25453909; Lindsey, Martin F. 1 McMullan, Richard J. 1 Gaitonde, Datta V. 2 Camberos, José A. 2; Affiliation: 1: U.S. Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jun2007, Vol. 45 Issue 6, p1258; Subject Term: GAS flow; Subject Term: SCRAMJET engines; Subject Term: ELECTRON beams; Subject Term: DRAG (Aerodynamics); Subject Term: IONIZATION (Atomic physics); Number of Pages: 1p; Document Type: Article L3 - 10.2514/1.24185 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25453909&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schepp, David J. T1 - Beyond the Age of Innocence: Rebuilding Trust between America and the World. JO - Air Power History JF - Air Power History Y1 - 2007///Summer2007 VL - 54 IS - 2 M3 - Book Review SP - 60 EP - 60 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "Beyond the Age of Innocence: Rebuilding Trust Between America and the World," by Kishore Mahbubani. KW - NONFICTION KW - UNITED States -- Foreign relations KW - MAHBUBANI, Kishore KW - BEYOND the Age of Innocence: Rebuilding Trust Between America & the World (Book) N1 - Accession Number: 25296613; Schepp, David J. 1; Affiliation: 1: 28th Bomb Wing Historian, Air Combat Command, USAF; Source Info: Summer2007, Vol. 54 Issue 2, p60; Subject Term: NONFICTION; Subject Term: UNITED States -- Foreign relations; Reviews & Products: BEYOND the Age of Innocence: Rebuilding Trust Between America & the World (Book); People: MAHBUBANI, Kishore; Number of Pages: 1/3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25296613&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bartz, Reed L. AU - Mossoni, Kory AU - Tyber, Jeffrey AU - Tokish, John AU - Gall, Kenneth AU - Siparsky, Patrick N. T1 - A Biomechanical Comparison of Initial Fixation Strength of 3 Different Methods of Anterior Cruciate Ligament Soft Tissue Graft Tibial Fixation. JO - American Journal of Sports Medicine JF - American Journal of Sports Medicine Y1 - 2007/06// VL - 35 IS - 6 M3 - Article SP - 949 EP - 954 SN - 03635465 AB - Background: Tibial fixation of soft tissue grafts continues to be problematic in the early postoperative period after anterior cruciate ligament reconstruction. Hypothesis: No differences exist for resistance to slippage of soft tissue grafts fixed with CentraLoc, Intrafix, or 35-mm bioabsorbable interference screws. Study Design: Controlled laboratory study. Methods: Bovine tibia and hoof extensor tendons were divided into 3 matched groups with 12 tibia and 12 extensor tendons in each group. Within each group, 6 specimens underwent monotonic loading to failure (1 mm/s), and 6 underwent cyclic loading (10 000 cycles, 125–325 N, 1 Hz). Results: No statistically significant differences were noted in mean load to failure or stiffness. The mean load to failure (and stiffness) for the 3 types of fixation were as follows: bioabsorbable interference screw, 631.6 ± 130.1 N (88.17 ± 6.79 N/mm); Intrafix, 644.3 ± 195.2 N (81.65 ± 16.5 N/mm); and CentraLoc, 791.1 ± 72.7 N (77.89 ± 7.07 N/mm). The slippage rates under cyclic loading for the 3 types of fixation were bioabsorbable interference screw, 0.336 ± 0.074 μm/cycle; Intrafix, 27.2 ± 31.6 μm/cycle; and CentraLoc, 0.0355 ± 0.0046 μm/cycle. In this model, CentraLoc proved statistically superior in resistance to cyclic loading compared with the bioabsorbable interference screw (P < .05) and Intrafix (P < .0001). The bioabsorbable interference screw proved statistically superior to Intrafix in resistance to cyclic loading (P < .05). Conclusions: In this bovine model, CentraLoc and bioabsorbable interference screws provided superior resistance to cyclic loading compared with Intrafix. Clinical Relevance: CentraLoc and bioabsorbable interference screws showed superior resistance to cyclic loading, which may indicate an increased resistance to clinical failure. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Sports Medicine is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRACTURE fixation KW - SOFT tissue injuries KW - ANTERIOR cruciate ligament KW - KNEE surgery KW - TENDONS KW - TRANSPLANTATION of organs, tissues, etc. KW - POSTOPERATIVE period KW - PLASTIC surgery KW - SURGICAL complications KW - anterior cruciate ligament KW - bioabsorbable KW - knee KW - tibial fixation N1 - Accession Number: 25298916; Bartz, Reed L. 1; Email Address: rbartz@nebraskaortho.com Mossoni, Kory 2 Tyber, Jeffrey 3 Tokish, John 4 Gall, Kenneth 3 Siparsky, Patrick N. 2; Affiliation: 1: Nebraska Orthopaedics, Lincoln, Nebraska 2: University of Colorado, Boulder, Colorado 3: Georgia Institute of Technology, Atlanta, Georgia 4: United States Air Force Academy, USAFA, Colorado; Source Info: Jun2007, Vol. 35 Issue 6, p949; Subject Term: FRACTURE fixation; Subject Term: SOFT tissue injuries; Subject Term: ANTERIOR cruciate ligament; Subject Term: KNEE surgery; Subject Term: TENDONS; Subject Term: TRANSPLANTATION of organs, tissues, etc.; Subject Term: POSTOPERATIVE period; Subject Term: PLASTIC surgery; Subject Term: SURGICAL complications; Author-Supplied Keyword: anterior cruciate ligament; Author-Supplied Keyword: bioabsorbable; Author-Supplied Keyword: knee; Author-Supplied Keyword: tibial fixation; Number of Pages: 6p; Document Type: Article L3 - 10.1177/0363546507301881 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25298916&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chai, N. AU - Naik, S. V. AU - Kulatilaka, W. D. AU - Laurendeau, N. M. AU - Lucht, R. P. AU - Roy, S. AU - Gord, J. R. T1 - Detection of acetylene by electronic resonance-enhanced coherent anti-Stokes Raman scattering. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2007/06// VL - 87 IS - 4 M3 - Article SP - 731 EP - 737 PB - Springer Science & Business Media B.V. SN - 09462171 AB - We report the detection of acetylene (C2H2) at low concentrations by electronic resonance-enhanced coherent anti-Stokes Raman scattering (ERE-CARS). Visible pump and Stokes beams are tuned into resonance with Q-branch transitions in the v2 Raman band of acetylene. An ultraviolet probe beam is tuned into resonance with the $\tilde{A}$ – $\tilde{X}$ electronic transition of C2H2, resulting in significant electronic resonance enhancement of the CARS signal. The signal is found to increase significantly with rising pressure for the pressure range 0.1–8 bar at 300 K. Collisional narrowing of the spectra appears to be important at 2 bar and above. A detection limit of approximately 25 ppm at 300 K and 1 bar is achieved for our experimental conditions. The signal magnitudes and the shape of the C2H2 spectrum are essentially constant for UV probe wavelengths from 233.0 to 238.5 nm, thus indicating that significant resonant enhancement is achieved even without tuning the probe beam into resonance with a specific electronic resonance transition. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACETYLENE KW - RESONANCE Raman effect KW - LIGHT -- Scattering KW - OPTICAL resonance KW - LASER beams KW - WAVELENGTHS KW - TEMPERATURE measurements KW - LIGHT sources N1 - Accession Number: 25234638; Chai, N. 1 Naik, S. V. 1 Kulatilaka, W. D. 1 Laurendeau, N. M. 1 Lucht, R. P. 1; Email Address: lucht@ecn.purdue.edu Roy, S. 2 Gord, J. R. 3; Affiliation: 1: School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA 2: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, OH 45440, USA 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Jun2007, Vol. 87 Issue 4, p731; Subject Term: ACETYLENE; Subject Term: RESONANCE Raman effect; Subject Term: LIGHT -- Scattering; Subject Term: OPTICAL resonance; Subject Term: LASER beams; Subject Term: WAVELENGTHS; Subject Term: TEMPERATURE measurements; Subject Term: LIGHT sources; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 7p; Illustrations: 2 Diagrams, 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1007/s00340-007-2650-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25234638&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - M.M. Tomczak AU - J.M. Slocik AU - M.O. Stone AU - R.R. Naik T1 - Bio-based approaches to inorganic material synthesis. JO - Biochemical Society Transactions JF - Biochemical Society Transactions Y1 - 2007/06// VL - 35 IS - 3 M3 - Article SP - 512 EP - 515 SN - 03005127 AB - Nature is an exquisite designer of inorganic materials using biomolecules as templates. Diatoms create intricate silica wall structures with fine features using the protein family of silaffins as templates. Marine sponges create silica spicules also using proteins, termed silicateins. In recent years, our group and others have used biomolecules as templates for the deposition of inorganic materials. In contrast with the traditional materials science approach, which requires high heat, extreme pH and non-aqueous solutions, the bio-based approaches allow the reactions to proceed usually at near ambient conditions. Additionally, the biological templates allow for the control of the inorganic nanoparticle morphology. The use of peptides and biomolecules for templating and assembling inorganics will be discussed here. [ABSTRACT FROM AUTHOR] AB - Copyright of Biochemical Society Transactions is the property of Portland Press Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOMOLECULES KW - CHEMICAL templates KW - INORGANIC compounds -- Synthesis KW - PROTEIN structure KW - SILICA KW - SOLUTION (Chemistry) KW - NANOPARTICLES KW - BIOMEDICAL materials N1 - Accession Number: 46877435; M.M. Tomczak 1 J.M. Slocik 1 M.O. Stone 1 R.R. Naik 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, U.S.A.; Source Info: 2007, Vol. 35 Issue 3, p512; Subject Term: BIOMOLECULES; Subject Term: CHEMICAL templates; Subject Term: INORGANIC compounds -- Synthesis; Subject Term: PROTEIN structure; Subject Term: SILICA; Subject Term: SOLUTION (Chemistry); Subject Term: NANOPARTICLES; Subject Term: BIOMEDICAL materials; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=46877435&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Garcia, D.B. AU - Grandt, A.F. AU - Bartha, B.B. AU - Golden, P.J. T1 - Threshold fatigue measurements and fractographic examination of fretting induced cracks in Ti-17 JO - Engineering Failure Analysis JF - Engineering Failure Analysis Y1 - 2007/06// VL - 14 IS - 4 M3 - Article SP - 529 EP - 540 SN - 13506307 AB - Abstract: Fretting damage is a common problem for titanium alloys used in turbomachinery equipment, particularly in the blade and disc contact regions. Under careful laboratory controlled conditions at Purdue University, the fretting process was recreated in specimens known as contact pads. Fretting in the contact pads is recognized for its highly localized damage, which results in the formation of cracks, minor propagation, and then crack arrest. This project studied the threshold behavior of fretting induced cracks in the titanium alloy Ti-17 with and without shot-peening surface enhancements. The approach utilized a unique C-specimen (created from the contact pads) for fatigue threshold experiments in addition to fractography to compare bare (untreated Ti-17) to shot peened Ti-17 contact pads with fretting induced damage. The results show that shot-peening does not mitigate fretting crack nucleation but does cause them to nucleate at steeper angles and arrest at depths less than the untreated specimens. Fracture surfaces are also presented to show the nature and physical characteristics of fretting damage in Ti-17. [Copyright &y& Elsevier] AB - Copyright of Engineering Failure Analysis is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRACTOGRAPHY KW - FRACTURE mechanics KW - DEFORMATIONS (Mechanics) KW - TITANIUM alloys KW - Fractography KW - Fretting KW - HCF KW - Threshold KW - Ti-17 N1 - Accession Number: 23742495; Garcia, D.B. 1; Email Address: daniel.garcia@swri.org Grandt, A.F. 2 Bartha, B.B. 3 Golden, P.J. 3; Affiliation: 1: Southwest Research Institute®, 6220 Culebra Road, San Antonio, TX 78238-5166, United States 2: School of Aeronautics and Astronautics, Purdue University, 315 N. Grant Street, West Lafayette, IN 47907-1282, United States 3: US Air Force Research Laboratory, AFRL/MLLMN, Wright Patterson AFB, OH 45433, USA; Source Info: Jun2007, Vol. 14 Issue 4, p529; Subject Term: FRACTOGRAPHY; Subject Term: FRACTURE mechanics; Subject Term: DEFORMATIONS (Mechanics); Subject Term: TITANIUM alloys; Author-Supplied Keyword: Fractography; Author-Supplied Keyword: Fretting; Author-Supplied Keyword: HCF; Author-Supplied Keyword: Threshold; Author-Supplied Keyword: Ti-17; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.engfailanal.2006.07.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23742495&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Koppisetty, K. AU - Kirkici, H. AU - Schweickart, D.L. T1 - Partial Vacuum Breakdown Characteristics of Helium at 20 kHz for Inhomogeneous Field Gap. JO - IEEE Transactions on Dielectrics & Electrical Insulation JF - IEEE Transactions on Dielectrics & Electrical Insulation Y1 - 2007/06// VL - 14 IS - 3 M3 - Article SP - 553 EP - 559 SN - 10709878 AB - In general, power devices and systems operating in vacuum or space environment are more susceptible to partial discharges, corona, or volume discharges due to the partial vacuum conditions. Additionally, high frequency operation of a power system is a contributing factor in lowering the breakdown voltage of insulation. In this paper we present our studies on the breakdown characteristics of helium operating in dc and 20 kHz ac field in partial vacuum, for a point-to-point and point-to-plane electrode configurations. Breakdown voltage as a function of pressure in the range of 27 to 400 Pa (0.2 to 3 torr) for both the dc and 20 kHz ac cases is presented. Voltage and current waveforms along with the optical emission waveform of the breakdown events are also presented. A variable dc power supply for dc and an in-house built variable dc-offset-ac power supply for the high frequency breakdown experiments are used. A high voltage probe and a Pearson current sensor are used for the voltage and current detection, and a photo-multiplier-tube with a digital pico-ammeter and a video camera are used for the optical signal detection of this set-up. The breakdown voltage as a function of pressure for both the ac and dc experiments, along with voltage breakdown waveforms for both electrodes are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Dielectrics & Electrical Insulation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HELIUM KW - ELECTRIC discharges KW - VACUUM KW - SPACE environment KW - PULSED power systems KW - Helium KW - inhomogeneous field KW - partial discharges N1 - Accession Number: 25501705; Koppisetty, K. 1 Kirkici, H. 1 Schweickart, D.L. 2; Affiliation: 1: Electrical and Computer Engineering, Auburn University, Auburn, AL 36849, USA 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, USA; Source Info: Jun2007, Vol. 14 Issue 3, p553; Subject Term: HELIUM; Subject Term: ELECTRIC discharges; Subject Term: VACUUM; Subject Term: SPACE environment; Subject Term: PULSED power systems; Author-Supplied Keyword: Helium; Author-Supplied Keyword: inhomogeneous field; Author-Supplied Keyword: partial discharges; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 7p; Illustrations: 3 Diagrams, 6 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25501705&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pozhar, Liudmila A. AU - Mitchel, William C. T1 - Collectivization of Electronic Spin Distributions and Magneto-Electronic Properties of Atomic Clusters of Ga and In with As, V, and Mn. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2007/06// VL - 43 IS - 6 M3 - Article SP - 3037 EP - 3039 SN - 00189464 AB - Exponential increase in nano- and sub-nanoscale research has involved investigations of the microscopic nature and origin of magnetism, including a search for the smallest atomic clusters that possess collectivized electronic spin density distributions. In this work the Hartree-Fock (HF) and restricted open-shell HF (ROHF) methods have been used to synthesize virtually (i.e., fundamental theory-based, computationally) a set of small pyramidal clusters of Ga or In atoms with As, V, and Mn atoms. The majority of the clusters are not destabilized by inclusion of vanadium or manganese atoms. The cluster charge and spin density distributions are collectivized. The In-based clusters with V or Mn atoms possess relatively large spin density values that may be of interest for spintronic materials development. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM (Metal) KW - MAGNETISM KW - MICROCLUSTERS KW - ARSENIC KW - TRANSITION metals KW - Bonding KW - charge carrier density KW - magnetooptic effects KW - quantum dots N1 - Accession Number: 25328807; Pozhar, Liudmila A. 1; Email Address: LPozhar@mint.ua.edu Mitchel, William C. 2; Affiliation: 1: University of Alabama, the Center for Materials for Information Technology, Tuscaloosa, AL 35487-0209 USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433 USA; Source Info: Jun2007, Vol. 43 Issue 6, p3037; Subject Term: GALLIUM (Metal); Subject Term: MAGNETISM; Subject Term: MICROCLUSTERS; Subject Term: ARSENIC; Subject Term: TRANSITION metals; Author-Supplied Keyword: Bonding; Author-Supplied Keyword: charge carrier density; Author-Supplied Keyword: magnetooptic effects; Author-Supplied Keyword: quantum dots; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; Number of Pages: 3p; Illustrations: 6 Diagrams, 2 Charts; Document Type: Article L3 - 10.1109/TMAG.2007.893693 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25328807&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roelke, George R. AU - Baldwin, Rusty O. AU - Mullins, Barry E. AU - Kim, Yong C. T1 - A Cache Architecture for Extremely Unreliable Nanotechnologies. JO - IEEE Transactions on Reliability JF - IEEE Transactions on Reliability Y1 - 2007/06// VL - 56 IS - 2 M3 - Article SP - 182 EP - 197 SN - 00189529 AB - In the drive to create ever smaller transistors, conventional silicon CMOS devices are becoming more difficult to fabricate reliably as process size shrinks. New technologies are being investigated to replace silicon CMOS. While offering greater numbers of devices per unit area, all of these technologies are more difficult to fabricate, and more likely to fail in operation than current technologies. Nanotechnology research has identified the need for fault and defect tolerance at the architectural level so that future devices can be used in large-scale electronics circuits. This paper examines the problem of creating reliable caches using extremely unreliable technologies. We incorporate support logic (i.e., control, datapath, and self-test logic) into the analysis, and propose a novel Content Addressable Memory-based design incorporating "best practice" fault tolerant design techniques. The design requires 15 times the number of devices of a conventional design, but enables the use of device technologies with defect rates higher than 10-6, a three order of magnitude improvement over non-fault tolerant designs. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Reliability is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOTECHNOLOGY KW - COMPLEMENTARY metal oxide semiconductors KW - TRANSISTORS KW - SILICON KW - HIGH technology KW - Computer architecture KW - defect tolerance KW - error correcting codes KW - fault tolerance KW - memory KW - nanotechnology N1 - Accession Number: 25452707; Roelke, George R. 1; Email Address: george.roelke@wpafb.af.mil Baldwin, Rusty O. 2; Email Address: rusty.baldwin@afit.edu Mullins, Barry E. 2; Email Address: barry.mullins@afit.edu Kim, Yong C. 2; Email Address: yong.kim@afit.edu; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA 2: Air Force Institute of Technology, Wright-Patterson AFB, OH 45433 USA; Source Info: Jun2007, Vol. 56 Issue 2, p182; Subject Term: NANOTECHNOLOGY; Subject Term: COMPLEMENTARY metal oxide semiconductors; Subject Term: TRANSISTORS; Subject Term: SILICON; Subject Term: HIGH technology; Author-Supplied Keyword: Computer architecture; Author-Supplied Keyword: defect tolerance; Author-Supplied Keyword: error correcting codes; Author-Supplied Keyword: fault tolerance; Author-Supplied Keyword: memory; Author-Supplied Keyword: nanotechnology; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 16p; Illustrations: 4 Diagrams, 7 Charts, 12 Graphs; Document Type: Article L3 - 10.1 1O9ITR.2007.895309 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25452707&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shangping Ren AU - Yue Yu AU - Kwiat, Kevin A. AU - Tsai, Jeffrey T1 - A Coordination Model for Improving Software System Attack-Tolerance and Survivability in Open Hostile Environments. JO - International Journal of Distributed Sensor Networks JF - International Journal of Distributed Sensor Networks Y1 - 2007/06// VL - 3 IS - 2 M3 - Article SP - 175 EP - 199 SN - 15501329 AB - This paper presents a coordination model that contains three active entities: actors, roles, and coordinators. Actors abstract the system's functionalities while roles and coordinators statically encapsulate coordination constraints and dynamically propagate these constraints among themselves and onto the actors. A software system's attack-tolerance and survivability in open hostile environments are enhanced through appropriate constraint propagations and constraint enforcements. The role represents a group of actors that share the same set of behaviors declared by the role. Coordination and coordination constraints in the model are categorized into two classes: inter-role coordination and intra-role coordination. The coordinators are responsible for inter-role coordination; while the roles are not only abstractions for a set of behaviors they also coordinate the actors which share the same role. This setting implies that both the coordination constraints and coordination activities are decentralized and distributed among the coordinators and the roles. The decentralization not only shields the system from single point of failures, but also provides a foundation that survivable feedback loops can be built upon. The survivable feedback loops presented in the model resist the contamination of the system by faulty elements and thereby protect the whole system from being broken down by single failures. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Distributed Sensor Networks is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER software KW - COMPUTER interfaces KW - AUTOMATION KW - RELIABILITY (Personality trait) KW - COMPUTER systems KW - Attack-Tolerance KW - Coordination Model KW - Distributed Voting KW - Probabilistic Analysis KW - Sensor Networks N1 - Accession Number: 24361749; Shangping Ren 1; Email Address: ren@iit.edu Yue Yu 1 Kwiat, Kevin A. 2 Tsai, Jeffrey 3; Affiliation: 1: Department of Computer Science, Illinois Institute of Technology, Chicago, IL. USA 2: Information Directorate, Air Force Research Laboratory. Rome, NY. USA 3: Department of Computer Science, University of Illinois at Chicago, Chicago, IL. USA; Source Info: 2007, Vol. 3 Issue 2, p175; Subject Term: COMPUTER software; Subject Term: COMPUTER interfaces; Subject Term: AUTOMATION; Subject Term: RELIABILITY (Personality trait); Subject Term: COMPUTER systems; Author-Supplied Keyword: Attack-Tolerance; Author-Supplied Keyword: Coordination Model; Author-Supplied Keyword: Distributed Voting; Author-Supplied Keyword: Probabilistic Analysis; Author-Supplied Keyword: Sensor Networks; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); Number of Pages: 25p; Illustrations: 14 Graphs; Document Type: Article L3 - 10.1080/15501320701205068 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24361749&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Plunkett, B. AU - Cazacu, O. AU - Lebensohn, R.A. AU - Barlat, F. T1 - Elastic-viscoplastic anisotropic modeling of textured metals and validation using the Taylor cylinder impact test JO - International Journal of Plasticity JF - International Journal of Plasticity Y1 - 2007/06// VL - 23 IS - 6 M3 - Article SP - 1001 EP - 1021 SN - 07496419 AB - Abstract: An elastic-viscoplastic model for describing the anisotropic high-strain rate behavior of both low-symmetry and high-symmetry textured materials is proposed. Yielding is described using a recently developed criterion which can capture simultaneously anisotropy and compression–tension asymmetry associated with deformation twinning. The anisotropy coefficients as well as the size of the elastic domain are considered to be functions of the accumulated plastic strain. The specific expressions for the evolution laws are determined using a multi-scale methodology, i.e. experimental measurements of crystallographic texture and uniaxial stress–strain curves, polycrystalline calculations, and macroscopic scale interpolation techniques. An overstress approach is used to incorporate rate effects in the formulation. Applications of the model to the description of the high strain-rate response of low-symmetry (hexagonal-close-packed zirconium) and high-symmetry (body-centered-cubic tantalum) pre-textured metals are presented. The very good agreement between the simulated and experimental post-test geometries of the Taylor impact specimens in terms of major and minor side profiles and impact-interface footprints shows the ability of the model to describe with fidelity the differences in the evolution of anisotropy between zirconium and tantalum. [Copyright &y& Elsevier] AB - Copyright of International Journal of Plasticity is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VISCOPLASTICITY KW - ELASTICITY KW - ANISOTROPY KW - METALS KW - Anisotropic material (B) KW - Crystal plasticity (B) KW - Elastic-viscoplastic matetrial (B) KW - Finite elements (C) KW - Impact testing (C) N1 - Accession Number: 24301252; Plunkett, B. 1 Cazacu, O. 2; Email Address: cazacu@reef.ufl.edu Lebensohn, R.A. 3 Barlat, F. 4; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, USA 2: Department of Mechanical and Aerospace Engineering, University of Florida-REEF, Shalimar, FL 32579-1163, USA 3: Los Alamos National Laboratory, MST8, MS G755, Los Alamos, NM 87545, USA 4: Materials Science Division, Alcoa Inc., Alcoa Technical Center, 100 Technical Drive, Alcoa Center, PA 15069-0001, USA; Source Info: Jun2007, Vol. 23 Issue 6, p1001; Subject Term: VISCOPLASTICITY; Subject Term: ELASTICITY; Subject Term: ANISOTROPY; Subject Term: METALS; Author-Supplied Keyword: Anisotropic material (B); Author-Supplied Keyword: Crystal plasticity (B); Author-Supplied Keyword: Elastic-viscoplastic matetrial (B); Author-Supplied Keyword: Finite elements (C); Author-Supplied Keyword: Impact testing (C); NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; Number of Pages: 21p; Document Type: Article L3 - 10.1016/j.ijplas.2006.10.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24301252&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Longacre, Edward G. T1 - Civil War to the Bloody End: The Life and Times of Major General Samuel P. Heintzelman. JO - Journal of American History JF - Journal of American History Y1 - 2007/06// VL - 94 IS - 1 M3 - Book Review SP - 281 EP - 282 PB - Oxford University Press / USA SN - 00218723 AB - The article presents a review of the book "Civil War to the Bloody End: The Life and Times of Major General Samuel P. Heintzelman," by Jerry Thompson. KW - NONFICTION KW - THOMPSON, Jerry KW - HEINTZELMAN, Samuel P. KW - CIVIL War to the Bloody End: The Life & Times of Major General Samuel P. Heintzelman (Book) N1 - Accession Number: 25498583; Longacre, Edward G. 1; Affiliation: 1: Headquarters Air Combat Command, USAF, Langley Air Force Base, Virginia; Source Info: Jun2007, Vol. 94 Issue 1, p281; Subject Term: NONFICTION; Reviews & Products: CIVIL War to the Bloody End: The Life & Times of Major General Samuel P. Heintzelman (Book); People: THOMPSON, Jerry; People: HEINTZELMAN, Samuel P.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25498583&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Osur, Alan M. T1 - Black, White, and Olive Drab: Racial Integration at Fort Jackson, South Carolina, and the Civil Rights Movement. JO - Journal of American History JF - Journal of American History Y1 - 2007/06// VL - 94 IS - 1 M3 - Book Review SP - 358 EP - 359 PB - Oxford University Press / USA SN - 00218723 AB - The article reviews the book "Black, White, and Olive Drab: Racial Integration at Fort Jackson, South Carolina, and the Civil Rights Movement," by Andrew H. Myers. KW - AFRICAN Americans -- Segregation KW - NONFICTION KW - MYERS, Andrew H. KW - BLACK, White & Olive Drab: Racial Integration at Fort Jackson, South Carolina & the Civil Rights Movement (Book) N1 - Accession Number: 25498673; Osur, Alan M. 1; Affiliation: 1: United States Air Force Academy, Colorado Springs, Colorado; Source Info: Jun2007, Vol. 94 Issue 1, p358; Subject Term: AFRICAN Americans -- Segregation; Subject Term: NONFICTION; Reviews & Products: BLACK, White & Olive Drab: Racial Integration at Fort Jackson, South Carolina & the Civil Rights Movement (Book); People: MYERS, Andrew H.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25498673&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Krishnamurthy, Srinivasan AU - Yu, Zhi Gang AU - Gonzalez, Leonel P. AU - Guha, Shekhar T1 - Accurate evaluation of nonlinear absorption coefficients in InAs, InSb, and HgCdTe alloys. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/06//6/1/2007 VL - 101 IS - 11 M3 - Article SP - 113104 PB - American Institute of Physics SN - 00218979 AB - We present a full band structure calculation of temperature- and wavelength-dependent two-photon absorption (TPA) coefficients and free carrier absorption (FCA) cross sections in InAs, InSb, and Hg1-xCdxTe alloys. The wavelength dependence of the TPA coefficients agrees well with a widely used analytical expression. However, the magnitudes of the TPA coefficients obtained here are smaller by a factor of 1.2–2.5 than the analytical values. In addition, the TPA coefficient is found to depend sensitively on the photoexcited carrier density in small gap materials. The FCA is found to arise predominantly from hole absorption. The FCA cross section is found to be independent of the carrier density, but is strongly dependent on the temperature. The calculated TPA, FCA coefficients, and lifetimes are fitted to closed-form expressions and are used in solving the rate equations to obtain the transmitted pump and probe intensities as functions of incident intensity and sample thickness. The calculated pump transmission and time-dependent probe transmission in InAs agree very well with the measured values. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSORPTION KW - ALLOYS KW - PHOTONS KW - CROSS sections (Nuclear physics) KW - DENSITY N1 - Accession Number: 25484531; Krishnamurthy, Srinivasan 1 Yu, Zhi Gang 1 Gonzalez, Leonel P. 2 Guha, Shekhar 3; Affiliation: 1: SRI International, 333 Ravenswood Avenue, Menlo Park, California 94025 2: General Dynamics Information Technology, Dayton, Ohio 45433 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Ohio 45433; Source Info: 6/1/2007, Vol. 101 Issue 11, p113104; Subject Term: ABSORPTION; Subject Term: ALLOYS; Subject Term: PHOTONS; Subject Term: CROSS sections (Nuclear physics); Subject Term: DENSITY; Number of Pages: 12p; Illustrations: 2 Charts, 11 Graphs; Document Type: Article L3 - 10.1063/1.2718874 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25484531&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kronauer, Richard E. AU - Gunzelmann, Glenn AU - Van Dongen, Hans P. A. AU - Doyle III, Francis J. AU - Klerman, Elizabeth B. T1 - Uncovering Physiologic Mechanisms of Circadian Rhythms and Sleep/Wake Regulation through Mathematical Modeling. JO - Journal of Biological Rhythms JF - Journal of Biological Rhythms Y1 - 2007/06// VL - 22 IS - 3 M3 - Article SP - 233 EP - 245 SN - 07487304 AB - Mathematical models of neurobehavioral function are useful both for understanding the underlying physiology and for predicting the effects of rest-activity-work schedules and interventions on neurobehavioral function. In a symposium titled "Modeling Human Neurobehavioral Performance I: Uncovering Physiologic Mechanisms" at the 2006 Society for Industrial and Applied Mathematics/Society for Mathematical Biology (SIAM/SMB) Conference on the Life Sciences, different approaches to modeling the physiology of human circadian rhythms, sleep, and neurobehavioral performance and their usefulness in understanding the underlying physiology were examined. The topics included key elements of the physiology that should be included in mathematical models, a computational model developed within a cognitive architecture that has begun to include the effects of extended wake on information-processing mechanisms that influence neurobehavioral function, how to deal with interindividual differences in the prediction of neurobehavioral function, the applications of systems biology and control theory to the study of circadian rhythms, and comparisons of these methods in approaching the overarching questions of the underlying physiology and mathematical models of circadian rhythms and neurobehavioral function. A unifying theme was that it is important to have strong collaborative ties between experimental investigators and mathematical modelers, both for the design and conduct of experiments and for continued development of the models. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Biological Rhythms is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CIRCADIAN rhythms KW - MATHEMATICAL models KW - BRAIN function localization KW - SLEEP-wake cycle KW - NEUROPHYSIOLOGY KW - circadian KW - cognitive architecture KW - mathematical modeling KW - neurobehavioral performance KW - sleep KW - systems biology N1 - Accession Number: 25326382; Kronauer, Richard E. 1,2 Gunzelmann, Glenn 3 Van Dongen, Hans P. A. 4 Doyle III, Francis J. 5 Klerman, Elizabeth B. 1; Email Address: ebklerman@hms.harvard.edu; Affiliation: 1: Division of Sleep Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 2: Division of Applied Sciences, Harvard University, Cambridge, MA 3: Air Force Research Laboratory, Mesa, AZ 4: Sleep and Performance Research Center, Washington State University, Spokane, WA 5: Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, CA; Source Info: Jun2007, Vol. 22 Issue 3, p233; Subject Term: CIRCADIAN rhythms; Subject Term: MATHEMATICAL models; Subject Term: BRAIN function localization; Subject Term: SLEEP-wake cycle; Subject Term: NEUROPHYSIOLOGY; Author-Supplied Keyword: circadian; Author-Supplied Keyword: cognitive architecture; Author-Supplied Keyword: mathematical modeling; Author-Supplied Keyword: neurobehavioral performance; Author-Supplied Keyword: sleep; Author-Supplied Keyword: systems biology; Number of Pages: 13p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1177/074830407301237 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25326382&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Buguo AU - Callahan, M.J. AU - Xu, Chunchuan AU - Bouthillette, L.O. AU - Giles, N.C. AU - Bliss, D.F. T1 - Hydrothermal growth and characterization of indium-doped-conducting ZnO crystals JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2007/06// VL - 304 IS - 1 M3 - Article SP - 73 EP - 79 SN - 00220248 AB - Abstract: Indium-doped-conducting ZnO crystals have been grown by the hydrothermal technique. The hydrothermal growth mechanism, as influenced by impurities, particularly In3+, is investigated. Indium ions or indium coordinated anionic groups such as In(H2O)2(OH)4− in alkaline solutions tend to absorb on both (0001¯) and (0001) faces of ZnO, resulting in a reduction of growth on the two polar faces, while facilitating growth on the m faces; the grown crystals exhibited a plate-like crystal morphology. We have used this growth characteristic to increase the diameter of c-plate ZnO seeds along the m-planes for the growth of nominally undoped (lithium-doped) large-size ZnO crystals. Transmission spectra of both nominally undoped and indium-doped ZnO crystals were measured for comparison. Indium doping reduced the transmittance of ZnO crystals; the absorption edge of In:ZnO was red-shifted with respect to nominally undoped ZnO. The temperature dependence of the resistivity and carrier concentration measured at temperatures from 86 to 360K indicated that the indium-doped ZnO, which contains about 150–175ppmwt of indium in the crystals, are of high conductivity, with a resistivity lower than 0.015Ω-cm and Hall carrier concentration of 1.09×1019 electrons/cm3 at room temperature. This research on hydrothermal growth of ZnO bulk crystals in the presence of In3+ will not only have an impact on the supply of ZnO-conducting substrates, but also contribute to the understanding of ZnO growth mechanisms in the presence of impurities. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALLOGRAPHY KW - CRYSTALS KW - INTERMEDIATES (Chemistry) KW - MATTER -- Properties KW - A1. Growth mechanism KW - A1. Indium-doped ZnO KW - A1. ZnO-conducting substrate KW - A2. Hydrothermal growth KW - B3. Hall measurements KW - B3. Optical transmission N1 - Accession Number: 24972435; Wang, Buguo 1; Email Address: buguo@solidstatescientific.com Callahan, M.J. 2 Xu, Chunchuan 3 Bouthillette, L.O. 2 Giles, N.C. 3 Bliss, D.F. 2; Affiliation: 1: Solid State Scientific Corporation, 27-2 Wright Road, Hollis, NH 03049, USA 2: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA 3: Department of Physics, West Virginia University, Morgantown, WV 26506, USA; Source Info: Jun2007, Vol. 304 Issue 1, p73; Subject Term: CRYSTALLOGRAPHY; Subject Term: CRYSTALS; Subject Term: INTERMEDIATES (Chemistry); Subject Term: MATTER -- Properties; Author-Supplied Keyword: A1. Growth mechanism; Author-Supplied Keyword: A1. Indium-doped ZnO; Author-Supplied Keyword: A1. ZnO-conducting substrate; Author-Supplied Keyword: A2. Hydrothermal growth; Author-Supplied Keyword: B3. Hall measurements; Author-Supplied Keyword: B3. Optical transmission; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jcrysgro.2007.01.047 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24972435&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sisti, Frank J. AU - Latimer IV, DeWitt T. T1 - LINKING LEADERSHIP AND TECHNICAL EXECUTION IN UNPRECEDENTED SYSTEMS-OF-SYSTEMS ACQUISITIONS. JO - Journal of Integrated Design & Process Science JF - Journal of Integrated Design & Process Science Y1 - 2007/06// VL - 11 IS - 2 M3 - Article SP - 73 EP - 89 PB - IOS Press SN - 10920617 AB - The acquisition of systems is as much an art as a science, a premise that is underscored by the limited understanding of the variables found in complex systems-of-systems. Moreover, the art and science associated with acquiring systems has been steadily increasing in complexity as the various technologies being acquired have made huge advances in capabilities. One of the most challenging types of acquisition to execute well is that requiring the development of an unprecedented systemof- systems or an ultra large scale system. The challenges to the acquisition staff range the spectrum of those faced at all levels in the acquiring organization. Multiple challenges exist from the most senior leadership and management, through those architecting the system, down to the individual engineer executing technical tasks as a part of the concept, design, development, fielding, and sustainment of such systems-of-systems. Leadership theory based on transformational and transactional leadership styles assists in highlighting leadership problems in unprecedented acquisitions. Coupled to these challenges are the clearly demonstrable requirements for ever closer linkages between each of the discrete functional levels within the acquiring organization. The study of the essential nature of theses linkages, and how their performance can severely impact the probability of success and effectiveness of the acquisition, is examined through the evaluation of a number of exemplar case studies. Using analytical insight derived from these case studies, combined with the application of current theories on leadership and management, this paper evolves the transdisciplinary premise by articulating that leadership and technical execution must be tightly linked especially when developing unprecedented systems-of-systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Integrated Design & Process Science is the property of IOS Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYSTEMS engineering KW - COMPLEXITY (Philosophy) KW - SYSTEM analysis KW - LEADERSHIP KW - AUTOMATED library acquisitions systems KW - acquisition KW - architecture KW - case study KW - leadership KW - management KW - precedented KW - system-of-systems KW - transactional KW - transformational KW - unprecedented N1 - Accession Number: 37046258; Sisti, Frank J. 1 Latimer IV, DeWitt T. 2; Affiliation: 1: Aerospace Corporation, CA, USA 2: United States Air Force, CA, USA; Source Info: Jun2007, Vol. 11 Issue 2, p73; Subject Term: SYSTEMS engineering; Subject Term: COMPLEXITY (Philosophy); Subject Term: SYSTEM analysis; Subject Term: LEADERSHIP; Subject Term: AUTOMATED library acquisitions systems; Author-Supplied Keyword: acquisition; Author-Supplied Keyword: architecture; Author-Supplied Keyword: case study; Author-Supplied Keyword: leadership; Author-Supplied Keyword: management; Author-Supplied Keyword: precedented; Author-Supplied Keyword: system-of-systems; Author-Supplied Keyword: transactional; Author-Supplied Keyword: transformational; Author-Supplied Keyword: unprecedented; Number of Pages: 17p; Illustrations: 1 Diagram, 2 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=37046258&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, Martin L. T1 - Michael Walzer's Concept of 'Supreme Emergency'. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2007/06// VL - 6 IS - 2 M3 - Article SP - 138 EP - 151 PB - Routledge SN - 15027570 AB - This paper critically examines Michael Walzer's famous efforts to integrate a 'supreme emergency' exemption into the ordinary restraints of jus in bello. The author argues that, while Walzer raises valid points about the felt responsibilities of leaders of political communities under extreme pressure, it is a mistake philosophically and prudentially to think of supreme emergency as granting moral permission to violate the jus in bello rules. Instead, the author argues, any violations of ordinary restraints should remain violations. However, by analogy, with exoneration from penalty for violations of criminal law in extreme circumstances, one might imagine political leaders' decisions to violate just war restraints to be (in very rare and extreme circumstances) forgivable but not permissible in advance. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Military Ethics is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAR (Philosophy) KW - JUST war doctrine KW - LEADERS KW - CRIMINAL law KW - Just and Unjust Wars KW - Just War Theory KW - Michael Walzer KW - Supreme Emergency KW - WALZER, Michael N1 - Accession Number: 25729095; Cook, Martin L. 1; Email Address: martin.cook@usafa.af.mil; Affiliation: 1: Department of Philosophy, United States Air Force Academy, USA; Source Info: Jun2007, Vol. 6 Issue 2, p138; Subject Term: WAR (Philosophy); Subject Term: JUST war doctrine; Subject Term: LEADERS; Subject Term: CRIMINAL law; Author-Supplied Keyword: Just and Unjust Wars; Author-Supplied Keyword: Just War Theory; Author-Supplied Keyword: Michael Walzer; Author-Supplied Keyword: Supreme Emergency; People: WALZER, Michael; Number of Pages: 14p; Document Type: Article L3 - 10.1080/15027570701381948 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25729095&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Merriman, Joel W. AU - Boal, Clint W. AU - Bashore, Terry L. AU - Zwank, Phillip J. AU - Wester, David B. T1 - Abundance of Diurnal Raptors in Relation to Prairie Dog Colonies: Implications for Bird--Aircraft Strike Hazard. JO - Journal of Wildlife Management JF - Journal of Wildlife Management Y1 - 2007/06// VL - 71 IS - 3 M3 - Article SP - 811 EP - 815 SN - 0022541X AB - Some diurnal raptors are frequently observed at prairie dog (Cynomys sp.) colonies. As a result, some military installations have conducted prairie dog control activities to reduce the bird-aircraft strike hazard (BASH) potential of low-flying aircraft. To evaluate the validity of this management strategy, we assessed raptor associations with prairie dog colonies at 2 short-grass prairie study areas: southern Lubbock County, Texas, USA, and Melrose Bombing and Gunnery Range in east-central New Mexico, USA. We quantified diurnal raptors (i.e., Falconiformes) at plots occupied (colony plots) and unoccupied (noncolony plots) by black-tailed prairie dogs (Cynomys ludovicianus) at both sites throughout 2002. We compared the number of individual birds of a given species at colony and noncolony plots within each study area by season. Ferruginous hawks (Buteo regalis) and northern harriers (Circus cyaneus) were more abundant at colony plots, whereas Swainson's hawks (B. swainsoni) and American kestrels (Falco sparverius) were more abundant at noncolony plots. Red-tailed hawk (B. jamaicensis) abundance did not differ between the 2 plot types. Our results suggest prairie dog control as a method of reducing BASH potential may be effective at some sites but may be ineffective or even increase the BASH potential at others. Thus, bird-avoidance models assessing the BASH potential should be conducted on a site-specific basis using information on relative and seasonal abundances of individual raptor species and the relative strike risks they pose to aircraft. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Wildlife Management is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIRDS of prey KW - PRAIRIE dogs KW - WILDLIFE management KW - ANIMALS -- Population biology KW - TEXAS KW - NEW Mexico KW - bird-aircraft strike hazard KW - black-tailed prairie dog KW - Cynomys ludovicianus KW - Falconiformes KW - hawk KW - raptor N1 - Accession Number: 28810733; Merriman, Joel W. 1 Boal, Clint W. 2; Email Address: clint.boal@ttu.edu Bashore, Terry L. 3 Zwank, Phillip J. 1 Wester, David B. 1; Affiliation: 1: Department of Range, Wildlife, and Fisheries Management, Texas Tech University, Lubbock, TX 79409-2125, USA 2: United States Geological Survey Texas Cooperative Fish and Wildlife Research Unit, Department of Range, Wildlife, and Fisheries Management, Texas Tech University, Lubbock, TX 79409-2120, USA 3: United States Air Force, Ranges, Airfields, and Airspace Operations Requirements Division, HQ ACC/DORP, 205 Dodd Boulevard, Suite 101, Langley Air Force Base, VA 23665-2789, USA; Source Info: Jun2007, Vol. 71 Issue 3, p811; Subject Term: BIRDS of prey; Subject Term: PRAIRIE dogs; Subject Term: WILDLIFE management; Subject Term: ANIMALS -- Population biology; Subject Term: TEXAS; Subject Term: NEW Mexico; Author-Supplied Keyword: bird-aircraft strike hazard; Author-Supplied Keyword: black-tailed prairie dog; Author-Supplied Keyword: Cynomys ludovicianus; Author-Supplied Keyword: Falconiformes; Author-Supplied Keyword: hawk; Author-Supplied Keyword: raptor; Number of Pages: 5p; Document Type: Article L3 - 10.2193/2006-373 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=28810733&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bartsch, Carrie M. AU - Subramanyam, Guru AU - Grote, James AU - Hopkins, Frank K. AU - Brott, Lawrence L. AU - Naik, Rajesh R. T1 - A new capacitive test structure for microwave characterization of biopolymers. JO - Microwave & Optical Technology Letters JF - Microwave & Optical Technology Letters Y1 - 2007/06// VL - 49 IS - 6 M3 - Article SP - 1261 EP - 1265 SN - 08952477 AB - A new capacitive test structure, containing a parallel plate capacitor with coplanar waveguide feed lines, was used for microwave characterization of biopolymers for the first time. Microwave dielectric properties were obtained for the biopolymers as a function of dc bias and temperature by performing on-wafer microwave measurements. Dielectric tunability was observed with applied dc bias in the biopolymers tested. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1261–1265, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22474 [ABSTRACT FROM AUTHOR] AB - Copyright of Microwave & Optical Technology Letters is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOPOLYMERS KW - WAVEGUIDES KW - DIELECTRICS KW - SEMICONDUCTORS KW - MICROWAVE optics KW - biopolymers KW - coplanar waveguide capacitive test structure KW - dielectric properties KW - microwave characterization N1 - Accession Number: 24584959; Bartsch, Carrie M. 1 Subramanyam, Guru 1 Grote, James 2 Hopkins, Frank K. 2 Brott, Lawrence L. 2 Naik, Rajesh R. 2; Affiliation: 1: University of Dayton, 300 College Park, Dayton, OH 45469 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH 45433; Source Info: Jun2007, Vol. 49 Issue 6, p1261; Subject Term: BIOPOLYMERS; Subject Term: WAVEGUIDES; Subject Term: DIELECTRICS; Subject Term: SEMICONDUCTORS; Subject Term: MICROWAVE optics; Author-Supplied Keyword: biopolymers; Author-Supplied Keyword: coplanar waveguide capacitive test structure; Author-Supplied Keyword: dielectric properties; Author-Supplied Keyword: microwave characterization; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 5p; Illustrations: 2 Diagrams, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1002/mop.22474 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24584959&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, Martin L. T1 - TheMorality ofWar. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College Y1 - 2007///Summer2007 VL - 37 IS - 2 M3 - Book Review SP - 110 EP - 111 SN - 00311723 AB - The article reviews the book "The Morality of War," by Brian Orend. KW - WAR KW - NONFICTION KW - OREND, Brian KW - MORALITY of War, The (Book) N1 - Accession Number: 25495048; Cook, Martin L. 1; Affiliation: 1: Professor of Philosophy and Deputy Department Head, United States Air Force Academy; Source Info: Summer2007, Vol. 37 Issue 2, p110; Subject Term: WAR; Subject Term: NONFICTION; Reviews & Products: MORALITY of War, The (Book); People: OREND, Brian; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25495048&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kuo, S. P. AU - Kuo, Steven S. AU - Huynh, James T. AU - Kossey, Paul T1 - Precipitation of trapped relativistic electrons by amplified whistler waves in the magnetosphere. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2007/06// VL - 14 IS - 6 M3 - Article SP - 062903 PB - American Institute of Physics SN - 1070664X AB - Numerical study of a loss-cone negative mass instability to amplify whistler waves by energetic electrons in the radiation belts is presented. The results show that a very low intensity whistler wave can be amplified by 50 keV electrons more than 25 dB, consistent with the Siple experimental result [Helliwell et al., J. Geophys. Res. 85, 3360 (1980)]. The dependencies of the amplification factor on the energetic electron density and on the initial wave intensity are evaluated. It is shown that the amplification factor decreases as the initial wave intensity increases. However, this gain can still exceed 15 dB for a 30 dB increase of the initial wave intensity, which is needed for the purpose of precipitating MeV electrons in the radiation belts. We then show that there exists a double resonance situation, by which, as an example, a wave is simultaneously in cyclotron resonance with 50 keV electrons as well as with 1.5 MeV electrons; the wave is first amplified by 50 keV electrons and then precipitates 1.5 MeV electrons. With the aid of the cyclotron resonance, the threshold field for the commencement of chaos in the electron trajectories is reduced considerably from that for a general case. Pitch angle scattering of 1.5 MeV electrons is demonstrated. The results show that a whistler wave with magnetic field amplitude of 0.08% of the background magnetic field can scatter electrons from an initial pitch angle of 86.5° to a pitch angle <50°. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - ATOMS KW - CATHODE rays KW - QUANTUM electrodynamics KW - ELECTRON distribution KW - MAGNETIC fields N1 - Accession Number: 25638500; Kuo, S. P. 1 Kuo, Steven S. 2 Huynh, James T. 3 Kossey, Paul 4; Affiliation: 1: Department of Electrical and Computer Engineering, Polytechnic University, Six MetroTech Center, New York, New York 11201 2: Northrop Grumman Space Technology, One Space Park, Redondo Beach, California 90278 3: Raytheon Space and Airborne Systems, El Segundo, California 90245 4: Air Force Research Laboratory/Space Vehicle Branch, Hanscom Air Force Base, Massachusetts 01731; Source Info: Jun2007, Vol. 14 Issue 6, p062903; Subject Term: ELECTRONS; Subject Term: ATOMS; Subject Term: CATHODE rays; Subject Term: QUANTUM electrodynamics; Subject Term: ELECTRON distribution; Subject Term: MAGNETIC fields; Number of Pages: 7p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.2743618 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25638500&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hong, Lang AU - Wicker, Devert T1 - A spatial-domain multiresolutional particle filter with thresholded wavelets JO - Signal Processing JF - Signal Processing Y1 - 2007/06// VL - 87 IS - 6 M3 - Article SP - 1384 EP - 1401 SN - 01651684 AB - Abstract: Particle filters have been proven to be very effective for nonlinear/non-Gaussian filtering. However, the most notorious disadvantage of a particle filter is its formidable computational complexity, since hundreds (even thousands) of particles are usually needed to achieve a required approximation accuracy. It has also been proven that one of the techniques of truly solving a computational problem is multiresolutional processing, both in temporal and spatial domains. Therefore, in this paper we propose a multiresolutional particle filter in the spatial domain using thresholded wavelets to reduce significantly the number of particles, meanwhile maintaining the full strength of a particle filter. [Copyright &y& Elsevier] AB - Copyright of Signal Processing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTATIONAL complexity KW - ELECTRONIC data processing KW - DIGITAL filters (Mathematics) KW - FILTERS (Mathematics) KW - Computational efficiency KW - Multiresolutional processing techniques KW - Nonlinear/non-Gaussian estimation KW - Particle filters KW - Wavelets N1 - Accession Number: 24138901; Hong, Lang 1; Email Address: lang.hong@wright.edu Wicker, Devert 2; Email Address: Devert.Wicker@wpafb.af.mil; Affiliation: 1: Department of Electrical Engineering, Wright State University, Dayton, OH 45435, USA 2: Target Recognition Branch, Air Force Research Laboratory, SNAT, WPAFB, OH 45433, USA; Source Info: Jun2007, Vol. 87 Issue 6, p1384; Subject Term: COMPUTATIONAL complexity; Subject Term: ELECTRONIC data processing; Subject Term: DIGITAL filters (Mathematics); Subject Term: FILTERS (Mathematics); Author-Supplied Keyword: Computational efficiency; Author-Supplied Keyword: Multiresolutional processing techniques; Author-Supplied Keyword: Nonlinear/non-Gaussian estimation; Author-Supplied Keyword: Particle filters; Author-Supplied Keyword: Wavelets; NAICS/Industry Codes: 518210 Data Processing, Hosting, and Related Services; Number of Pages: 18p; Document Type: Article L3 - 10.1016/j.sigpro.2006.12.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24138901&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Kyong H. AU - Cha, Seung I. AU - Ryu, Ho J. AU - Dilmore, Morris F. AU - Hong, Soon H. T1 - Effect of mechanical alloying process on microstructure and mechanical properties of ODS tungsten heavy alloys JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2007/05/31/ VL - 434-435 M3 - Article SP - 433 EP - 436 SN - 09258388 AB - Abstract: The microstructure and mechanical properties of mechanically alloyed oxide dispersion strengthened (ODS) tungsten heavy alloys were investigated. Three different mechanical alloying processes, such as one-step mechanical alloying process, two-step mechanical alloying process, and mechanical alloying and mixing process, were performed in order to control the microstructure and mechanical properties of ODS tungsten heavy alloys. The partially stabilized zirconia (PSZ) dispersoids tend to be dispersed in tungsten grains rather than the binder matrix when the powders were prepared by two-step mechanical alloying or mechanical alloying and mixing process. The yield strength of ODS tungsten heavy alloy increased with decreasing the binder mean thickness, but was not dependent on location of oxide dispersoids. The elongation and high temperature strength of ODS tungsten heavy alloys increased with increasing the content of PSZ dispersoids. [Copyright &y& Elsevier] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLURGY KW - TUNGSTEN KW - CHROMIUM group KW - MICROMECHANICS KW - Mechanical alloying (MA) KW - Mechanical properties KW - Microstructure KW - Oxide dispersion strengthened (ODS) KW - Tungsten heavy alloy N1 - Accession Number: 24556056; Lee, Kyong H. 1 Cha, Seung I. 1 Ryu, Ho J. 2 Dilmore, Morris F. 3 Hong, Soon H. 1; Email Address: shhong@kaist.ac.kr; Affiliation: 1: Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 373-1 Kusung-dong, Yusung-gu, Daejeon 305-701, Republic of Korea 2: DUPIC, Korea Atomic Energy Research Institute, 150 Deokjin-dong, Yusung-gu, Daejeon 305-353, Republic of Korea 3: Air Force Research Laboratory, Eglin Air Force Base, FL 32542-1405, USA; Source Info: May2007, Vol. 434-435, p433; Subject Term: METALLURGY; Subject Term: TUNGSTEN; Subject Term: CHROMIUM group; Subject Term: MICROMECHANICS; Author-Supplied Keyword: Mechanical alloying (MA); Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Oxide dispersion strengthened (ODS); Author-Supplied Keyword: Tungsten heavy alloy; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jallcom.2006.08.284 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24556056&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Richard A. Vaia AU - John F. Maguire T1 - Polymer Nanocomposites with Prescribed Morphology: Going beyond Nanoparticle-Filled Polymers. JO - Chemistry of Materials JF - Chemistry of Materials Y1 - 2007/05/29/ VL - 19 IS - 11 M3 - Article SP - 2736 EP - 2751 SN - 08974756 AB - Polymer nanocomposites (PNCs), i.e. nanoparticles (spheres, rods, and plates) dispersed in a polymer matrix, have garnered substantial academic and industrial interest since their inception, ca. 1990. With respect to the neat matrix, nanoparticle dispersion has been shown to enhance physical (e.g., barrier, erosion resistance, and reduced flammability), thermomechanical (e.g., heat distortion temperature, thermal expansion coefficient, and stiffness), and processing (e.g., surface finish and melt strength) characteristics. Beyond maximization of the nanoparticle dispersion, however, the morphology of these materials is many times uncontrolled, yielding isotropic nanofilled systems, not necessarily spatially “engineered, designed and tailored” materials. To impact high-technology applications requiring unique electrical, thermal, and optical properties, manufacturing techniques enabling control of the nanoparticle arrangement and distribution must be developed. This paper will examine the status of approaches for directing the hierarchical morphology of nanoparticle dispersions in three dimensions, and beyond uniaxial alignment, using examples from the literature to highlight the potential and issues. Ultimately, two general approaches to this challenge are emerging, namely, external-in (directed patterning of nanoparticle dispersions) and internal-out (mesophase assembly of nanoparticles). [ABSTRACT FROM AUTHOR] AB - Copyright of Chemistry of Materials is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - NANOPARTICLES KW - DISPERSION KW - PARTICLES (Nuclear physics) N1 - Accession Number: 25324007; Richard A. Vaia 1 John F. Maguire 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-PattersonAir Force Base, Dayton, Ohio 45433-7750; Source Info: May2007, Vol. 19 Issue 11, p2736; Subject Term: POLYMERS; Subject Term: NANOPARTICLES; Subject Term: DISPERSION; Subject Term: PARTICLES (Nuclear physics); Number of Pages: 16p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25324007&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harrison, Jeremy AU - Sambandam, Senthil N. AU - Boeckl, John J. AU - Mitchel, W. C. AU - Collins, W. E. AU - Lu, Weijie T1 - Evaluation of metal-free carbon nanotubes formed by SiC thermal decomposition. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/05/15/ VL - 101 IS - 10 M3 - Article SP - 104311 PB - American Institute of Physics SN - 00218979 AB - Thermal decomposition on SiC surface at high temperature and at low residual oxygen pressure yields a thin film of metal-free carbon nanotubes (CNTs) aligned on the SiC. In this study, CNT films on carbon-face 4H-SiC are produced under vacuum from 10-3 to 10-7 Torr and at temperatures ranging from 1400 to 1700 °C. Ex situ spectroscopic ellipsometry (SE) technique is applied to investigate the structure of the CNT films. It is found that two thin interfacial layers on the top and bottom of the CNTs are crucial in modeling the film structure from the SE data. We suggest a five layer structural model that consists of a CNT film as the main component, two interfacial layers, an amorphous carbon layer, and a surface roughness layer. This structural model based on the SE measurements is confirmed by cross-section transmission electron microscopy and can be applied for all CNT/SiC structures grown at various pressures and temperatures. At the growth pressure of 10-5 Torr, the CNT layer on SiC consists of 30%–50% CNTs, 35%–60% voids, and 5%–12% amorphous carbon in volume. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - SILICON carbide KW - DECOMPOSITION (Chemistry) KW - THIN films KW - PRESSURE N1 - Accession Number: 25289279; Harrison, Jeremy 1 Sambandam, Senthil N. 1 Boeckl, John J. 2 Mitchel, W. C. 2 Collins, W. E. 3 Lu, Weijie 4; Affiliation: 1: Department of Chemistry, Fisk University, Nashville, Tennessee 37208 and Center for Physics and Chemistry of Materials, Fisk University, Nashville, Tennessee 37208 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, AFRL/MLPS, Wright-Patterson AFB, Ohio 45433 3: Department of Physics, Fisk University, Nashville, Tennessee 37208 and Center for Physics and Chemistry of Materials, Fisk University, Nashville, Tennessee 37208 4: Department of Chemistry, Fisk University, Nashville, Tennessee 37208; Department of Physics, Fisk University, Nashville, Tennessee 37208; and Center for Physics and Chemistry of Materials, Fisk University, Nashville, Tennessee 37208; Source Info: 5/15/2007, Vol. 101 Issue 10, p104311; Subject Term: CARBON nanotubes; Subject Term: SILICON carbide; Subject Term: DECOMPOSITION (Chemistry); Subject Term: THIN films; Subject Term: PRESSURE; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 5p; Illustrations: 1 Black and White Photograph, 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1063/1.2732547 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25289279&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sharma, A. K. AU - Logofãtu, P. C. AU - Mayberry, C. S. AU - Brueck, S. R. J. AU - Islam, N. E. T1 - Effects of dimensional nanoscaling on the optical and electrical properties of crystalline Si thin films. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/05/15/ VL - 101 IS - 10 M3 - Article SP - 104914 PB - American Institute of Physics SN - 00218979 AB - Thin film Si structures between 10 and 200 nm in thickness and configured into two terminal metal-semiconductor-metal structures have been characterized for optical and electrical properties. Dark currents, spectral response, dc quantum efficiency, and ultrafast time response up to 400 nm femtosecond laser illuminations at low fields have been studied. Dark currents and dc photocurrent measurements showed an increase in the film conductivity between 75 and 35 nm, suggesting an increase in the carrier effective velocities due to confinement. An increase in the carrier effective velocity below 75 nm was also confirmed through the transient response analysis. The measured spectral responses are in good agreement with Fresnel’s theoretical model for thin film coupling. The electron-limited transient signal has a full width at half maximum (FWHM) approximately 40 ps for the 10 nm Si film as compared to 490 ps for a 200 nm structure. For a hole-limited transit time signal the FWHM was about 82 ps for the 10 nm film as compared to 2.5 ns for the 200 nm film reduction in FWHM for both electrons and holes for the 10 nm film, signifying that carriers travel much faster as the film thickness is reduced. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - SEMICONDUCTORS KW - SOLID state electronics KW - PARTICLES (Nuclear physics) KW - SPECTRAL sensitivity KW - ELECTRONS KW - LASER photochemistry N1 - Accession Number: 25289190; Sharma, A. K. 1 Logofãtu, P. C. 2 Mayberry, C. S. 3 Brueck, S. R. J. 4 Islam, N. E. 5; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117 and Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico 87106 2: National Institute of Laser, Plasma and Radiation Physics, Bucharest R-76900, Romania 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117 4: Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico 87106; Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87106; and the Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87106 5: Department of Electrical and Computer Engineering, University of Missouri, Columbia, Missouri, 65211; Source Info: 5/15/2007, Vol. 101 Issue 10, p104914; Subject Term: THIN films; Subject Term: SEMICONDUCTORS; Subject Term: SOLID state electronics; Subject Term: PARTICLES (Nuclear physics); Subject Term: SPECTRAL sensitivity; Subject Term: ELECTRONS; Subject Term: LASER photochemistry; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 9p; Illustrations: 3 Black and White Photographs, 1 Diagram, 8 Graphs; Document Type: Article L3 - 10.1063/1.2737983 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25289190&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Billock, Vincent A. AU - Tsou, Brian H. T1 - Neural interactions between flicker-induced self-organized visual hallucinations and physical stimuli. JO - Proceedings of the National Academy of Sciences of the United States of America JF - Proceedings of the National Academy of Sciences of the United States of America Y1 - 2007/05/15/ VL - 104 IS - 20 M3 - Article SP - 8490 EP - 8495 SN - 00278424 AB - Spontaneous pattern formation in cortical activity may have consequences for perception, but little is known about interactions between sensory-driven and self-organized cortical activity. To address this deficit, we explored the relationship between ordinary stimulus-controlled pattern perception and the autonomous hallucinatory geometrical pattern formation that occurs for unstructured visual stimulation (e.g., empty-field flicker). We found that flicker-induced hallucinations are biased by the presentation of adjacent geometrical stimuli; geometrical forms that map to cortical area V1 as orthogonal gratings are perceptually opponent in biasing hallucinations. Rotating fan blades and pulsating circular patterns are the most salient biased hallucinations. Apparent motion and fractal (1/f) noise are also effective in driving hallucinatory pattern formation (the latter is consistent with predictions of spatiotemporal pattern formation driven by stochastic resonance). The behavior of these percepts suggests that self-organized hallucinatory pattern formation in human vision is governed by the same cortical properties of localized processing, lateral inhibition, simultaneous contrast, and nonlinear retinotopic mapping that govern ordinary vision. [ABSTRACT FROM AUTHOR] AB - Copyright of Proceedings of the National Academy of Sciences of the United States of America is the property of National Academy of Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEVELOPMENTAL biology KW - HALLUCINATIONS & illusions KW - RESONANCE KW - SUBCONSCIOUSNESS KW - BIOLOGY KW - 1/f KW - MacKay effect KW - spatiotemporal pattern formation KW - spontaneous cortical activity KW - stochastic resonance N1 - Accession Number: 25301036; Billock, Vincent A. 1; Email Address: vince.billock@gd-ais.com Tsou, Brian H. 2; Affiliation: 1: General Dynamics, Inc., Suite 200, 5200 Springfield Pike, Dayton, OH 45431 2: U.S. Air Force Research Laboratory, Wright-Patterson AFB, OH 45433; Source Info: 5/15/2007, Vol. 104 Issue 20, p8490; Subject Term: DEVELOPMENTAL biology; Subject Term: HALLUCINATIONS & illusions; Subject Term: RESONANCE; Subject Term: SUBCONSCIOUSNESS; Subject Term: BIOLOGY; Author-Supplied Keyword: 1/f; Author-Supplied Keyword: MacKay effect; Author-Supplied Keyword: spatiotemporal pattern formation; Author-Supplied Keyword: spontaneous cortical activity; Author-Supplied Keyword: stochastic resonance; Number of Pages: 6p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1073/pnas.0610813104 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25301036&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roberts, C.G. AU - Semiatin, S.L. AU - Rollett, A.D. T1 - Particle-associated misorientation distribution in a nickel-base superalloy JO - Scripta Materialia JF - Scripta Materialia Y1 - 2007/05/15/ VL - 56 IS - 10 M3 - Article SP - 899 EP - 902 SN - 13596462 AB - An approach was developed to quantify the relationship between the location of carbide particles and grain boundaries during the annealing of a typical nickel-base superalloy, Waspaloy. The average grain size increased during supersolvus heat treatment at 1100°C for 1h despite an absence of carbide coarsening and changes in the global texture. It was determined that the spatial distribution of carbides which developed during annealing was correlated to the grain-boundary misorientation distribution. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBIDES KW - NICKEL KW - CHROMIUM-cobalt-nickel-molybdenum alloys KW - ANNEALING of metals KW - Grain growth KW - Misorientation KW - Nickel KW - Texture KW - Zener pinning N1 - Accession Number: 24313263; Roberts, C.G. 1; Email Address: croberts@andrew.cmu.edu Semiatin, S.L. 2 Rollett, A.D. 1; Affiliation: 1: Department of Materials Science and Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA 2: Air Force Research Laboratory, AFRL/MLLM, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: May2007, Vol. 56 Issue 10, p899; Subject Term: CARBIDES; Subject Term: NICKEL; Subject Term: CHROMIUM-cobalt-nickel-molybdenum alloys; Subject Term: ANNEALING of metals; Author-Supplied Keyword: Grain growth; Author-Supplied Keyword: Misorientation; Author-Supplied Keyword: Nickel; Author-Supplied Keyword: Texture; Author-Supplied Keyword: Zener pinning; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2007.01.034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24313263&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stello, D. AU - Bruntt, H. AU - Kjeldsen, H. AU - Bedding, T. R. AU - Arentoft, T. AU - Gilliland, R. L. AU - Nuspl, J. AU - Kim, S.-L. AU - Kang, Y. B. AU - Koo, J.-R. AU - Lee, J.-A. AU - Sterken, C. AU - Lee, C.-U. AU - Jensen, H. R. AU - Jacob, A. P. AU - Szab, R. AU - Frandsen, S. AU - Csubry, Z. AU - Dind, Z. E. AU - Bouzid, M. Y. T1 - Multisite campaign on the open cluster M67 – II. Evidence for solar-like oscillations in red giant stars. JO - Monthly Notices of the Royal Astronomical Society JF - Monthly Notices of the Royal Astronomical Society Y1 - 2007/05/11/ VL - 377 IS - 2 M3 - Article SP - 584 EP - 594 PB - Oxford University Press / USA SN - 00358711 AB - Measuring solar-like oscillations in an ensemble of stars in a cluster, holds promise for testing stellar structure and evolution more stringently than just fitting parameters to single field stars. The most-ambitious attempt to pursue these prospects was by Gilliland et al. who targeted 11 turn-off stars in the open cluster M67 (NGC 2682), but the oscillation amplitudes were too small (<20 μmag) to obtain unambiguous detections. Like Gilliland et al. we also aim at detecting solar-like oscillations in M67, but we target red giant stars with expected amplitudes in the range 50– and periods of 1 to 8 h. We analyse our recently published photometry measurements, obtained during a six-week multisite campaign using nine telescopes around the world. The observations are compared with simulations and with estimated properties of the stellar oscillations. Noise levels in the Fourier spectra as low as are obtained for single sites, while the combined data reach , making this the best photometric time series of an ensemble of red giant stars. These data enable us to make the first test of the scaling relations (used to estimate frequency and amplitude) with an homogeneous ensemble of stars. The detected excess power is consistent with the expected signal from stellar oscillations, both in terms of its frequency range and amplitude. However, our results are limited by apparent high levels of non-white noise, which cannot be clearly separated from the stellar signal. [ABSTRACT FROM AUTHOR] AB - Copyright of Monthly Notices of the Royal Astronomical Society is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STARS -- Open clusters KW - RED giants KW - OSCILLATIONS KW - STARS -- Structure KW - STELLAR evolution KW - open clusters and associations: individual: M67 (NGC 2682) KW - stars: oscillations KW - stars: variables: other KW - techniques: photometric N1 - Accession Number: 24891927; Stello, D. 1,2,3; Email Address: stello@physics.usyd.edu.au Bruntt, H. 1,2,3 Kjeldsen, H. 1,4 Bedding, T. R. 2 Arentoft, T. 1,2,4 Gilliland, R. L. 5 Nuspl, J. 6 Kim, S.-L. 7 Kang, Y. B. 7 Koo, J.-R. 7 Lee, J.-A. 7 Sterken, C. 8 Lee, C.-U. 2 Jensen, H. R. 1 Jacob, A. P. 2 Szab, R. 6,9 Frandsen, S. 1,4 Csubry, Z. 6 Dind, Z. E. 2 Bouzid, M. Y. 8; Affiliation: 1: Institut for Fysik og Astronomi (IFA), Aarhus Universitet, 8000 Aarhus, Denmark 2: School of Physics, University of Sydney, NSW 2006, Australia 3: Department of Physics, US Air Force Academy, Colorado Springs, CO 80840, USA 4: Danish AsteroSeismology Centre, Aarhus Universitet, DK-8000 Aarhus, Denmark 5: Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, USA 6: Konkoly Observatory of the Hungarian Academy of Sciences, PO Box 67, H-1525 Budapest, Hungary 7: Korea Astronomy and Space Science Institute, Daejeon 305-348, Korea 8: Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium 9: Physics Department, University of Florida, Gainesville, FL 32611, USA; Source Info: 5/11/2007, Vol. 377 Issue 2, p584; Subject Term: STARS -- Open clusters; Subject Term: RED giants; Subject Term: OSCILLATIONS; Subject Term: STARS -- Structure; Subject Term: STELLAR evolution; Author-Supplied Keyword: open clusters and associations: individual: M67 (NGC 2682); Author-Supplied Keyword: stars: oscillations; Author-Supplied Keyword: stars: variables: other; Author-Supplied Keyword: techniques: photometric; Number of Pages: 11p; Illustrations: 2 Charts, 10 Graphs; Document Type: Article L3 - 10.1111/j.1365-2966.2007.11585.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24891927&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ferguson, E. AU - Viggiano, A. A. T1 - The role of the adiabatic principle in ion chemistry: a personal history. JO - Molecular Physics JF - Molecular Physics Y1 - 2007/05/10/ VL - 105 IS - 9 M3 - Article SP - 1123 EP - 1128 SN - 00268976 AB - Prior to their measurement in the laboratory, several critical ionospheric ion-molecule reactions were excluded from models on the basis of the adiabatic principle of Ehrenfest. Following the development of versatile laboratory measurement techniques, a number of these reactions were found to be fast, implying that the adiabatic principle was generally inapplicable to thermal energy ion-molecule reactions. Examples of rare exceptions are shown. More recently, there have been successful applications of this theory as evidenced in Landau-Teller plots of vibrational quenching and excitation of various ions. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Physics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERMEDIATES (Chemistry) KW - MATTER -- Properties KW - SOLUTION (Chemistry) KW - RESEARCH KW - ELECTRONS KW - IONS KW - ION-molecule collisions KW - COLLISIONS (Nuclear physics) KW - COOLING N1 - Accession Number: 25507924; Ferguson, E. 1 Viggiano, A. A. 2; Email Address: albert.viggiano@hanscom.af.mil; Affiliation: 1: NOAA Environmental Research Lab. Boulder, CO, USA 2: Air Force Research Laboratory. Hanscom AFB, MA, USA; Source Info: 5/10/2007, Vol. 105 Issue 9, p1123; Subject Term: INTERMEDIATES (Chemistry); Subject Term: MATTER -- Properties; Subject Term: SOLUTION (Chemistry); Subject Term: RESEARCH; Subject Term: ELECTRONS; Subject Term: IONS; Subject Term: ION-molecule collisions; Subject Term: COLLISIONS (Nuclear physics); Subject Term: COOLING; Number of Pages: 6p; Illustrations: 1 Graph; Document Type: Article L3 - 10.1080/00268970701206659 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25507924&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ongstad, A. P. AU - Kaspi, R. AU - Dente, G. C. AU - Tilton, M. L. AU - Chavez, J. T1 - Midinfrared, optically pumped, unstable resonator lasers. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/05/07/ VL - 90 IS - 19 M3 - Article SP - 191107 PB - American Institute of Physics SN - 00036951 AB - The authors describe high-brightness, broad area midinfrared semiconductor lasers. These devices were fabricated in the authors’ laboratory using a commercial solid-source molecular beam epitaxial system. The laser structures incorporated 14 type-II quantum wells embedded in thick waveguide/absorber regions composed of In0.2Ga0.8As0.18Sb0.82. The optically pumped devices achieved higher brightness operation as unstable resonators. Each unstable resonator was realized by polishing a diverging cylindrical mirror at one of the facets. For an unstable resonator semiconductor laser operating at ∼4.6 μm, near 84 K, and at a peak power of 6.7 W, the device was observed to be nearly diffraction limited at 25 times threshold. In comparison, a standard Fabry-Pérot laser was observed to be many times diffraction limited when operated under similar conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR lasers KW - MOLECULAR beam epitaxy KW - QUANTUM wells KW - LASER cavity resonators KW - OPTICAL diffraction KW - EPITAXY KW - FABRY-Perot interferometers N1 - Accession Number: 25128099; Ongstad, A. P. 1 Kaspi, R. 1 Dente, G. C. 2 Tilton, M. L. 2 Chavez, J. 2; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate AFRL/DELS, 3550 Aberdeen Ave., Kirtland AFB, New Mexico 87117 2: Boeing Defense and Space Group, Albuquerque, New Mexico 87106; Source Info: 5/7/2007, Vol. 90 Issue 19, p191107; Subject Term: SEMICONDUCTOR lasers; Subject Term: MOLECULAR beam epitaxy; Subject Term: QUANTUM wells; Subject Term: LASER cavity resonators; Subject Term: OPTICAL diffraction; Subject Term: EPITAXY; Subject Term: FABRY-Perot interferometers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 2 Diagrams, 1 Graph; Document Type: Article L3 - 10.1063/1.2737426 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25128099&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Jauchem, James R. T1 - Re: Acidosis, lactate, electrolytes, muscle enzymes, and other factors in the blood of Sus scrofa following repeated TASER® exposures JO - Forensic Science International JF - Forensic Science International Y1 - 2007/05/03/ VL - 168 IS - 1 M3 - Letter SP - e19 EP - e19 SN - 03790738 KW - Acidosis KW - Electronic control devices KW - Hyperkalaemia KW - Lactate KW - TASER® N1 - Accession Number: 24710114; Jauchem, James R. 1; Email Address: james.jauchem@brooks.af.mil; Affiliation: 1: U.S. Air Force Research Laboratory, Human Effectiveness Directorate, Directed Energy Bioeffects Division, 8262 Hawks Road, Brooks City-Base, TX 78235, USA; Source Info: May2007, Vol. 168 Issue 1, pe19; Author-Supplied Keyword: Acidosis; Author-Supplied Keyword: Electronic control devices; Author-Supplied Keyword: Hyperkalaemia; Author-Supplied Keyword: Lactate; Author-Supplied Keyword: TASER®; Number of Pages: 1p; Document Type: Letter L3 - 10.1016/j.forsciint.2006.12.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24710114&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Canli, Turhan AU - Brandon, Susan AU - Casebeer, William AU - Crowley, Philip J. AU - DuRousseau, Don AU - Greely, Henry T. AU - Pascual-Leones, Alvaro T1 - Response to Open Peer Commentaries on "Neuroethics and National Security". JO - American Journal of Bioethics JF - American Journal of Bioethics Y1 - 2007/05// VL - 7 IS - 5 M3 - Article SP - 1 EP - 3 PB - Routledge SN - 15265161 AB - A letter to the editor is presented in response to the article "Neuroethics and National Security" by Turhan Canli, Susan Brandon and their colleagues. KW - LETTERS to the editor KW - NATIONAL security N1 - Accession Number: 25084798; Canli, Turhan 1 Brandon, Susan 2 Casebeer, William 3 Crowley, Philip J. 4 DuRousseau, Don 5 Greely, Henry T. 6 Pascual-Leones, Alvaro 7; Affiliation: 1: Stony Brook University. 2: Yale University. 3: United States Air Force NATO Military Headquarters. 4: Center for American Progress. 5: Human Bionics LLC. 6: Stanford University. 7: Harvard Medical School and Beth Israel Deaconess Medical Center.; Source Info: May2007, Vol. 7 Issue 5, p1; Subject Term: LETTERS to the editor; Subject Term: NATIONAL security; NAICS/Industry Codes: 928110 National Security; Number of Pages: 3p; Document Type: Article L3 - 10.1080/15265160701372641 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25084798&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Canli, Turhan AU - Brandon, Susan AU - Casebeer, William AU - Crowley, Philip J. AU - Rousseau, Don Du AU - Greely, Henry T. AU - Pascual-Leone, Alvaro T1 - Neuroethics and National Security. JO - American Journal of Bioethics JF - American Journal of Bioethics Y1 - 2007/05// VL - 7 IS - 5 M3 - Article SP - 3 EP - 13 PB - Routledge SN - 15265161 AB - The article presents a paper that focuses on the probable uses of neuroscience research in the methods to issues regarding national security. The paper is divided into three parts, the first part providing a short overview of several key neuroscience brain mapping technologies. The second and last part respectively touches on the works using these technologies that are said to become relevant for future national security applications and the neuroethical challenges that come with them. KW - NATIONAL security KW - NEUROLOGY KW - NEUROSCIENCES KW - ETHICS KW - BRAIN mapping N1 - Accession Number: 25084795; Canli, Turhan 1; Email Address: turhan.canli@sunysb.edu Brandon, Susan 2 Casebeer, William 3 Crowley, Philip J. 4 Rousseau, Don Du 5 Greely, Henry T. 6 Pascual-Leone, Alvaro 7; Affiliation: 1: Stony Brook University. 2: Yale University. 3: United States Air Force, NATO Military Headquarters. 4: Center for American Progress. 5: Human Bionics LLC. 6: Stanford University. 7: Harvard Medical School and Beth Israel Deaconess Medical Center.; Source Info: May2007, Vol. 7 Issue 5, p3; Subject Term: NATIONAL security; Subject Term: NEUROLOGY; Subject Term: NEUROSCIENCES; Subject Term: ETHICS; Subject Term: BRAIN mapping; NAICS/Industry Codes: 928110 National Security; Number of Pages: 11p; Document Type: Article L3 - 10.1080/15265160701290249 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25084795&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jingshu Huang AU - Bue, Brian AU - Pattath, Avin AU - Ebert, David S. AU - Thomas, Krystal M. T1 - Interactive Illustrative Rendering on Mobile Devices. JO - IEEE Computer Graphics & Applications JF - IEEE Computer Graphics & Applications Y1 - 2007/05//May/Jun2007 VL - 27 IS - 3 M3 - Article SP - 48 EP - 56 SN - 02721716 AB - The article presents information on the use of remote visualization techniques to address mobile service hardware issues including low screen resolution, limited input interfaces, and battery life. The authors inform that the remote visualization approach employs a client-server model and is used for displaying complex three dimensional (3D) surface models and volumetric data on mobile platforms such as cellular telephones. Mobile devices programmability and usability have enhanced with the improvements in processors, graphics chips, displays, power management, and wireless technology. With the help of OpenGL ES, the first standardized 3D programming interface for mobile devices, direct 3D rendering at interactive rates is possible. KW - MOBILE communication systems KW - THREE-dimensional imaging KW - CELL phones KW - VISUAL perception KW - WIRELESS communication systems KW - CLIENT/SERVER computing KW - DIGITAL image processing KW - DIGITAL images KW - IMAGING systems N1 - Accession Number: 25028448; Jingshu Huang 1; Email Address: jhuang2@purdue.edu Bue, Brian 2; Email Address: brian.d.bue@jpl.nasa.gov Pattath, Avin 3; Email Address: orapattath@purdue.edu Ebert, David S. 4,5; Email Address: ebertd@purdue.edu Thomas, Krystal M. 6; Email Address: krystal.thomas@wpafb.af.mil; Affiliation: 1: School of Electrical and Computer Engineering, Purdue University. 2: Associate Member, Information Systems and Computer Science staff, NASA Jet Propulsion Laboratory. 3: PURPL Lab, Purdue University. 4: Professor, School of Electrical and Computer Engineering, Purdue University. 5: Director, Purdue University Regional Visualization and Analytics Center. 6: Industrial Engineer, US Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio.; Source Info: May/Jun2007, Vol. 27 Issue 3, p48; Subject Term: MOBILE communication systems; Subject Term: THREE-dimensional imaging; Subject Term: CELL phones; Subject Term: VISUAL perception; Subject Term: WIRELESS communication systems; Subject Term: CLIENT/SERVER computing; Subject Term: DIGITAL image processing; Subject Term: DIGITAL images; Subject Term: IMAGING systems; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; NAICS/Industry Codes: 443142 Electronics Stores; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25028448&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kandangath, Anil AU - Krishnamoorthy, Satish AU - Ying-Cheng Lai AU - Gaudet, John A. T1 - Inducing Chaos in Electronic Circuits by Resonant Perturbations. JO - IEEE Transactions on Circuits & Systems. Part I: Regular Papers JF - IEEE Transactions on Circuits & Systems. Part I: Regular Papers Y1 - 2007/05// VL - 54 IS - 5 M3 - Article SP - 1109 EP - 1119 SN - 15498328 AB - We propose a scheme to induce chaotic attractors in electronic circuits. The applications that we are interested in stipulate the following three constraints: 1) the circuit operates in a stable periodic regime far away from chaotic behavior; 2) no parameters or state variables of the circuit are directly accessible to adjustment and 3) the circuit equations are unknown and the only available information is a time series (or a signal) measured from the circuit. Under these conditions, a viable approach to chaos induction is to use external excitations such as a microwave signal, assuming that a proper coupling mechanism exists which allows the circuit to be perturbed by the excitation. The question we address in this paper is how to choose the waveform of the excitation to ensure that sustained chaos (chaotic attractor) can be generated in the circuit. We show that weak resonant perturbations with time-varying frequency and phase are generally able to drive the circuit into a hierarchy of nonlinear resonant states and eventually into chaos. We develop a theory to explain this phenomenon, provide numerical support, and demonstrate the feasibility of the method by laboratory experiments. In particular, our experimental system consists of a Duffing-type of nonlinear electronic oscillator driven by a phase-locked loop (PLL) circuit. The PLL can track the frequency and phase evolution of the target Duffing circuit and deliver resonant perturbations to generate robust chaotic attractors. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Circuits & Systems. Part I: Regular Papers is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHASE-locked loops KW - ELECTRONIC circuit design KW - ELECTRONIC systems KW - ELECTRIC circuits KW - ELECTRIC apparatus & appliances KW - ELECTRIC oscillators KW - DEMODULATION (Electronics) KW - INTERFACE circuits KW - LOGIC design KW - Duffing oscillator KW - inducing chaos KW - phase-locked loop (PLL) KW - resonant perturbations N1 - Accession Number: 27032654; Kandangath, Anil 1; Email Address: anil.kumar@asu.edu Krishnamoorthy, Satish 1; Email Address: satishk@asu.edu Ying-Cheng Lai 1; Email Address: Ying-Cheng.Lai@asu.edu Gaudet, John A. 2; Affiliation: 1: Department of Electrical Engineering, Arizona State University, Tempe, AZ 85287 USA 2: Air Force Research Laboratory, AFRL/DEHE, Kirtland AFB, NM 87117 USA; Source Info: May2007, Vol. 54 Issue 5, p1109; Subject Term: PHASE-locked loops; Subject Term: ELECTRONIC circuit design; Subject Term: ELECTRONIC systems; Subject Term: ELECTRIC circuits; Subject Term: ELECTRIC apparatus & appliances; Subject Term: ELECTRIC oscillators; Subject Term: DEMODULATION (Electronics); Subject Term: INTERFACE circuits; Subject Term: LOGIC design; Author-Supplied Keyword: Duffing oscillator; Author-Supplied Keyword: inducing chaos; Author-Supplied Keyword: phase-locked loop (PLL); Author-Supplied Keyword: resonant perturbations; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; NAICS/Industry Codes: 335990 All other electrical equipment and component manufacturing; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 811412 Appliance Repair and Maintenance; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TCSI.2007.893510 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27032654&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barnes, Paul N. T1 - Advancing YBCO-Coated Conductors for Use on Air Platforms. JO - International Journal of Applied Ceramic Technology JF - International Journal of Applied Ceramic Technology Y1 - 2007/05// VL - 4 IS - 3 M3 - Article SP - 242 EP - 249 SN - 1546542X AB - With progress of the YBCO-coated conductor to longer lengths, application of the conductor is nearing. An overview of a couple of current U.S. Air Force application programs is presented. A discussion is then made of where research and development of the YBCO-coated conductor should progress and examples in the U.S. Air Force program. These areas include magnetic flux pinning in YBCO thin films, reduction of the ac losses experienced in the YBCO conductor, and stability and quench issues when implementing the YBCO-coated conductor. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Applied Ceramic Technology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductors KW - MAGNETIC flux KW - THIN films KW - FLUX pinning KW - METALS -- Quenching N1 - Accession Number: 25378209; Barnes, Paul N. 1; Email Address: Paul.barnes@wpafb.af.mil; Affiliation: 1: Propulsion Directories, Air Force Research Laboratory, WPAFB, Ohio 45433; Source Info: May2007, Vol. 4 Issue 3, p242; Subject Term: ELECTRIC conductors; Subject Term: MAGNETIC flux; Subject Term: THIN films; Subject Term: FLUX pinning; Subject Term: METALS -- Quenching; Number of Pages: 8p; Illustrations: 2 Black and White Photographs, 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1111/j.1744-7402.2007.02137.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25378209&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abadi, Jacob T1 - British Policy in Aden and the Protectorates 1955-67: Last Outpost of a Middle East Empire. JO - International Journal of Middle East Studies JF - International Journal of Middle East Studies Y1 - 2007/05// VL - 39 IS - 2 M3 - Book Review SP - 318 EP - 320 SN - 00207438 AB - The article reviews the book "British Policy in Aden and the Protectorates 1955-67: Last Outpost of a Middle East Empire," by Spencer Mawby. KW - IMPERIALISM KW - NONFICTION KW - MAWBY, Spencer KW - BRITISH Policy in Aden & the Protectorates 1955-1967: Last Outpost of a Middle East Empire (Book) N1 - Accession Number: 25070580; Abadi, Jacob 1; Email Address: jacob.abadi@usafa.af.mil; Affiliation: 1: Department of History, United States Air Force Academy, Colorado Springs, Colo.; Source Info: May2007, Vol. 39 Issue 2, p318; Subject Term: IMPERIALISM; Subject Term: NONFICTION; Reviews & Products: BRITISH Policy in Aden & the Protectorates 1955-1967: Last Outpost of a Middle East Empire (Book); People: MAWBY, Spencer; Number of Pages: 3p; Document Type: Book Review L3 - 10.1017.S0020743807070262 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25070580&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Austin L. AU - Kunz, Donald L. T1 - Dynamic Coupling of the KC-135 Tanker and Boom for Modeling and Simulation. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2007/05//May/Jun2007 VL - 44 IS - 3 M3 - Article SP - 1034 EP - 1034 SN - 00218669 AB - The article addresses the tanker-boom interactions and how to model them for simulation purposes. The researchers will develop a new integrated analytical model that incorporates aircraft motion effects into the boom equations of motion and aerodynamics. It mentions that the KC-135 aerial refueling boom was attached to the aircraft at the boom root by a vertical pin and a yoke-and-trunnion assembly. KW - AERODYNAMICS KW - FLIGHT simulators KW - KC-135 (Tanker aircraft) KW - AERONAUTICS KW - MILITARY jets N1 - Accession Number: 25563677; Smith, Austin L. 1 Kunz, Donald L. 2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, 45433 2: U.S. Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio, 45433; Source Info: May/Jun2007, Vol. 44 Issue 3, p1034; Subject Term: AERODYNAMICS; Subject Term: FLIGHT simulators; Subject Term: KC-135 (Tanker aircraft); Subject Term: AERONAUTICS; Subject Term: MILITARY jets; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; Number of Pages: 1p; Document Type: Article L3 - 10.2514/1.27241 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25563677&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jordan, Jennifer L. AU - Ferranti, Louis AU - Austin, Ryan A. AU - Dick, Richard D. AU - Foley, Jason R. AU - Thadhani, Naresh N. AU - McDowell, David L. AU - Benson, David J. T1 - Equation of state of aluminum-iron oxide-epoxy composite. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/05//5/1/2007 VL - 101 IS - 9 M3 - Article SP - 093520 PB - American Institute of Physics SN - 00218979 AB - We report on the measurements of the shock equation of state (Hugoniot) of an Al/Fe2O3/epoxy composite, prepared by epoxy cast curing of powder mixtures. Explosive loading, with Baratol, trinitrotoluene (TNT), and Octol, was used for performing experiments at higher pressures, in which case shock velocities were measured in the samples and aluminum, copper, or polymethyl methacrylate (PMMA) donor material, using piezoelectric pins. The explosive loading of the metal donors (aluminum and copper) will be discussed. Gas gun experiments provide complementary lower pressure data in which piezoelectric polyvinylidene fluoride (PVDF) stress gauges were used to measure the input and propagated stress wave profiles in the sample and the corresponding shock propagation velocity. The results of the Hugoniot equation of state are compared with mesoscale finite-element simulations, which show good agreement. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICULATE matter KW - EPOXY compounds KW - PRESSURE KW - STRESS waves KW - METHYL methacrylate KW - GAGES N1 - Accession Number: 25114785; Jordan, Jennifer L. 1 Ferranti, Louis 2 Austin, Ryan A. 3 Dick, Richard D. 4 Foley, Jason R. 1 Thadhani, Naresh N. 5 McDowell, David L. 5 Benson, David J. 6; Affiliation: 1: Air Force Research Laboratory, 2306 Perimeter Road, Eglin AFB, Florida 32542 2: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0254 3: G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0405 4: Shocks Unlimited, Albuquerque, New Mexico 87114 5: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0254 and G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0405 6: Department of Mechanical and Aerospace Engineering, University of California at San Diego, La Jolla, California 92093-0404; Source Info: 5/1/2007, Vol. 101 Issue 9, p093520; Subject Term: PARTICULATE matter; Subject Term: EPOXY compounds; Subject Term: PRESSURE; Subject Term: STRESS waves; Subject Term: METHYL methacrylate; Subject Term: GAGES; Number of Pages: 9p; Illustrations: 3 Diagrams, 4 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.2719272 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25114785&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buchwald, Walter R. AU - Morath, Christian P. AU - Drevinsky, Peter J. T1 - Effects of deep defect concentration on junction space charge capacitance measurements. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/05//5/1/2007 VL - 101 IS - 9 M3 - Article SP - 094503 PB - American Institute of Physics SN - 00218979 AB - Expressions for the small signal capacitance and pulse bias-induced large signal capacitance transient of an abrupt n+-p junction in the presence of one or more deep traps of arbitrary concentrations are presented. The expressions show that a simple inverse relationship between the measured small signal capacitance and the junction’s space charge depletion width is not expected. Unexpected effects on defect capture cross section and defect concentration determination, when applied to deep level transient spectroscopy simulations, are also reported. Experimental results of both temperature dependent capacitance and transient capacitance measurements performed on electron irradiated Si n+-p junctions are presented and analyzed in the context of these expressions. Modeling of the measured signals using these expressions is shown to be in good agreement with the experiment. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR junctions KW - SPACE charge KW - CAPACITANCE meters KW - DEEP level transient spectroscopy KW - MATERIALS science N1 - Accession Number: 25114952; Buchwald, Walter R. 1 Morath, Christian P. 2 Drevinsky, Peter J. 1; Affiliation: 1: Air Force Research Laboratory SNHC, Hanscom AFB, Massachusetts 01731 2: Sandia National Laboratories, Albuquerque, New Mexico 87185; Source Info: 5/1/2007, Vol. 101 Issue 9, p094503; Subject Term: SEMICONDUCTOR junctions; Subject Term: SPACE charge; Subject Term: CAPACITANCE meters; Subject Term: DEEP level transient spectroscopy; Subject Term: MATERIALS science; Number of Pages: 9p; Illustrations: 2 Diagrams, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1063/1.2719291 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25114952&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Paesler, M.A. AU - Baker, D.A. AU - Lucovsky, G. AU - Edwards, A.E. AU - Taylor, P.C. T1 - EXAFS study of local order in the amorphous chalcogenide semiconductor Ge2Sb2Te5 JO - Journal of Physics & Chemistry of Solids JF - Journal of Physics & Chemistry of Solids Y1 - 2007/05// VL - 68 IS - 5/6 M3 - Article SP - 873 EP - 877 SN - 00223697 AB - Abstract: Studies of amorphous (a-) semiconductors have been driven by technological advances as well as fundamental theories. Observation of electrical switching, for example, fueled early interest in a-chalcogenides. More recently switching of the a-chalcogenide Ge2Sb2Te5 has been applied quite successfully to DVD technology where the quest for the discovery of better-suited materials continues. Thus, switching provides researchers today with an active arena of technological as well as fundamental study. On the theoretical front, bond constraint theory — or BCT — provides a powerful framework for understanding the structure and properties of a-materials. Applications of BCT to switching in Ge2Sb2Te5 holds the promise of finding the best composition suited for switching applications. This work presents EXAFS data that describe local bonding configurations in as-deposited Ge2Sb2Te5. The data show that Ge2Sb2Te5 may best be viewed as a random array of Ge2Te3 and Sb2Te3 structural units imbedded in a tissue of a-Te, 17% of which is over coordinated. In addition, a valence alternation pair defect is introduced to the model to satisfy charge conservation constraints. [Copyright &y& Elsevier] AB - Copyright of Journal of Physics & Chemistry of Solids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR industry KW - POWER semiconductor industry KW - SEMICONDUCTOR laser industry KW - A. Chalcogenides KW - A. Glasses KW - A. Optical materials KW - C. XAFS KW - D. Phase transitions N1 - Accession Number: 25419384; Paesler, M.A. 1; Email Address: paesler@ncsu.edu Baker, D.A. 1 Lucovsky, G. 1 Edwards, A.E. 2 Taylor, P.C. 3; Affiliation: 1: Physics Department, North Carolina State University, Raleigh, NC 27695-8202, USA 2: Air Force Research Laboratory, KAFB, NM 87117-5776, USA 3: Physics Department, Colorado School of Mines, Golden, CO 80401, USA; Source Info: May2007, Vol. 68 Issue 5/6, p873; Subject Term: SEMICONDUCTOR industry; Subject Term: POWER semiconductor industry; Subject Term: SEMICONDUCTOR laser industry; Author-Supplied Keyword: A. Chalcogenides; Author-Supplied Keyword: A. Glasses; Author-Supplied Keyword: A. Optical materials; Author-Supplied Keyword: C. XAFS; Author-Supplied Keyword: D. Phase transitions; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jpcs.2007.03.041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25419384&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Krbec, Amanda C. T1 - Current understanding and management of hidradenitis suppurativa. JO - Journal of the American Academy of Nurse Practitioners JF - Journal of the American Academy of Nurse Practitioners Y1 - 2007/05// VL - 19 IS - 5 M3 - Article SP - 228 EP - 234 PB - Wiley-Blackwell SN - 10412972 AB - Purpose: To review the diagnosis and treatment of hidradenitis suppurativa (HS) in primary care. Data sources: Review of current literature from journals and textbooks as well as clinical experience. Conclusions: HS, a chronic disease causing scarring and pus formation to the skin bearing apocrine glands, requires continual management by the primary care manager and often deems referral to a dermatologist or surgeon. Implications for practice: If misdiagnosed or poorly managed, HS has detrimental effects on patients’ quality of life and self-esteem. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Academy of Nurse Practitioners is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SKIN diseases KW - DISEASE management KW - DIAGNOSIS KW - THERAPEUTICS KW - PRIMARY care (Medicine) KW - DERMATOLOGY KW - MEDICAL care KW - acne inversa KW - dermatology KW - Hidradenitis suppurativa N1 - Accession Number: 24962881; Krbec, Amanda C. 1; Email Address: amanda.krbec@usafa.af.mil; Affiliation: 1: United States Air Force Academy, Colorado Springs, Colorado; Source Info: May2007, Vol. 19 Issue 5, p228; Subject Term: SKIN diseases; Subject Term: DISEASE management; Subject Term: DIAGNOSIS; Subject Term: THERAPEUTICS; Subject Term: PRIMARY care (Medicine); Subject Term: DERMATOLOGY; Subject Term: MEDICAL care; Author-Supplied Keyword: acne inversa; Author-Supplied Keyword: dermatology; Author-Supplied Keyword: Hidradenitis suppurativa; Number of Pages: 7p; Document Type: Article L3 - 10.1111/j.1745-7599.2007.00219.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24962881&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hay, R. S. AU - Boakye, E. E. AU - Mogilevsky, P. T1 - Spherical Rhabdophane Sols. I: Rheology and Particle Morphology. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2007/05// VL - 90 IS - 5 M3 - Article SP - 1574 EP - 1579 PB - Wiley-Blackwell SN - 00027820 AB - The particle morphology, weight loss, and rheology of rhabdophane (LaPO4· nH2O) sols with either spherical or rod-shaped particles were characterized and compared. Some spherical particle sols were doped with aluminum. Particle size was characterized by light scattering and transmission electron microscopy (TEM). The additives that promote spherical particle formation also cause greater high temperature weight loss than similar rod-shaped particle sols. As expected, the shear-rate dependence of sol viscosity was much weaker for spherical particle sols. The viscosity for sols with both types of particles was modeled using particle aspect ratios and bound water layer thicknesses as variables. A bound water layer thickness of 3–5 nm was suggested by modeling, except in aluminum-doped sols, where a much larger thickness was suggested. Modeled aspect ratios were larger than those observed by TEM. Weakly bound agglomerates may be present in both types of sols. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLOIDS KW - RHEOLOGY KW - LANTHANUM compounds KW - PARTICLES KW - TRANSMISSION electron microscopy KW - VISCOSITY N1 - Accession Number: 25017584; Hay, R. S. 1; Email Address: Randall.Hay@wpafb.af.mil Boakye, E. E. 2 Mogilevsky, P. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/MLLN), Wright-Patterson Air Force Base, Ohio 45433 2: UES Inc., Dayton, Ohio 45432; Source Info: May2007, Vol. 90 Issue 5, p1574; Subject Term: COLLOIDS; Subject Term: RHEOLOGY; Subject Term: LANTHANUM compounds; Subject Term: PARTICLES; Subject Term: TRANSMISSION electron microscopy; Subject Term: VISCOSITY; Number of Pages: 6p; Illustrations: 1 Black and White Photograph, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2007.01545.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25017584&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boakye, E. E. AU - Hay, R. S. AU - Mogilevsky, P. T1 - Spherical Rhabdophane Sols. II: Fiber Coating. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2007/05// VL - 90 IS - 5 M3 - Article SP - 1580 EP - 1588 PB - Wiley-Blackwell SN - 00027820 AB - A rhabdophane (LaPO4·nH2O) sol with fine spherical particles was used to coat Nextel™ 720 fiber tows continuously with monazite (LaPO4). The coatings are compared with those made previously from rod-shaped particles. The coated fibers were heat-treated at 1000°–1300°C for 1, 10, and 100 h. The effect of heat treatment temperature and time on coating microstructure was characterized by scanning electron microscopy and transmission electron microscopy, and the strengths of the coated fibers were measured after coating and heat treatment. Grain shapes and grain growth rates were measured. Coating thickness uniformity was quantified by a fit to a truncated extreme-value distribution. Coating hermeticity was evaluated by analysis of grain growth rates. The spherical particles promote more rapid coating densification and local hermeticity, but introduce problems with sintering shrinkage cracking that are not present in coatings derived from rod-shaped particles. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLOIDS KW - LANTHANUM compounds KW - SURFACE coatings KW - PARTICLES KW - MONAZITE KW - MICROSTRUCTURE KW - SCANNING electron microscopy N1 - Accession Number: 25017585; Boakye, E. E. 1; Email Address: emmanuel.boakye@wpafb.af.mil Hay, R. S. 2 Mogilevsky, P. 3; Affiliation: 1: UES Inc., Dayton Xenia Rd., Dayton, OH 45432 2: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/MLLN), Wright-Patterson Air Force Base, Ohio 45433 3: UES Inc. Dayton-Xenia Rd., Dayton, Ohio 45432; Source Info: May2007, Vol. 90 Issue 5, p1580; Subject Term: COLLOIDS; Subject Term: LANTHANUM compounds; Subject Term: SURFACE coatings; Subject Term: PARTICLES; Subject Term: MONAZITE; Subject Term: MICROSTRUCTURE; Subject Term: SCANNING electron microscopy; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 9p; Illustrations: 7 Black and White Photographs, 2 Charts, 6 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2007.01544.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25017585&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Scott Meng AU - Hatice Duran AU - Jun Hu AU - Thein Kyu AU - Lalgudi V. Natarajan AU - Vincent P. Tondiglia AU - Richard L. Sutherland AU - Timothy J. Bunning T1 - Influence of Photopolymerization Reaction Kinetics on Diffraction Efficiency of H-PDLC Undergoing Photopatterning Reaction in Mixtures of Acrylic Monomer/Nematic Liquid Crystals. JO - Macromolecules JF - Macromolecules Y1 - 2007/05// VL - 40 IS - 9 M3 - Article SP - 3190 EP - 3197 SN - 00249297 AB - The influence of photopolymerization reaction kinetics on diffraction efficiency has been investigated on the mixtures of photocurable acrylic monomer/nematic liquid crystals subjected to photopatterning. Photodifferential scanning calorimetry and real-time Fourier transform infrared spectroscopy experiments were conducted as a function of concentration in order to determine the reaction kinetics of acrylic monomer/liquid crystal mixtures. The lumped reaction rate constants for each concentration exhibited a nonlinear variation of the reaction rate constant with conversion and concentration. To gain fundamental insight, theoretical modeling and numerical simulation have been carried out by combining Flory−Huggins free energy of isotropic mixing and Maier−Saupe free energy of nematic ordering in conjunction with the experimentally determined reaction rate constants. The evolution of diffraction efficiency is discussed in terms of photopolymerization rates, monomer concentrations, and also the type of diffusion such as Fick diffusion occurring in a single phase or mutual diffusion in phase separating systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOPOLYMERIZATION KW - LIQUID crystals KW - ATTENTION KW - CHEMICAL kinetics N1 - Accession Number: 25111017; Scott Meng 1 Hatice Duran 1 Jun Hu 1 Thein Kyu 1 Lalgudi V. Natarajan 1 Vincent P. Tondiglia 1 Richard L. Sutherland 1 Timothy J. Bunning 1; Affiliation: 1: Department of Polymer Engineering, University of Akron, Akron, Ohio 44325-0301; Department ofChemistry, University of Akron, Akron, Ohio 44325-3601; Science Applications InternationalCorporation, Dayton, Ohio 45431; and Air Force Research Laboratory, Materials and ManufacturingDirectorate, Wright-Patterson Air Force Base, Ohio 45433; Source Info: May2007, Vol. 40 Issue 9, p3190; Subject Term: PHOTOPOLYMERIZATION; Subject Term: LIQUID crystals; Subject Term: ATTENTION; Subject Term: CHEMICAL kinetics; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25111017&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ozawa, T. AU - Levin, D. A. AU - Wysong, I. J. T1 - Chemical reaction modeling for hypervelocity collisions between O and HCl. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2007/05// VL - 19 IS - 5 M3 - Article SP - 056102 PB - American Institute of Physics SN - 10706631 AB - The sensitivity of a rarefied-to-transitional flow to the fidelity of the chemical reaction model is investigated for a new molecular dynamics/quasiclassical trajectory (MD/QCT)-derived model and compared with the widely used total collision energy (TCE) model of Bird. For hypervelocity collisions that occur in the space environment, it is not clear, a priori, that the TCE model will provide reasonable results for the required high energy range and, particularly, if strong favoring of the reaction among different forms of reactant energy occurs. In fact, in previous work, the TCE model, using available Arrhenius parameters, has been found, for these flow conditions, to give unphysical probabilities. A chemical reaction model, suitable for use in the direct simulation Monte Carlo (DSMC) method, is developed to simulate the hypervelocity collisions of O(3P)+HCl(1Σ+)→OH(2Π)+Cl(2P), an example of an important reaction in high-altitude atmospheric-jet interactions. The model utilizes the MD/QCT method with a new benchmark triplet A″ surface. Since the modeling of chemical reactions in DSMC simulations requires the use of a reaction probability, the adequacy of the overall collision cross section, usually modeled by the variable hard sphere (VHS) model, is also considered. To obtain an accurate collision cross section, the approach of Tokumasu and Matsumoto was used in the MD/QCT method with the aforementioned potential energy surface. Energy transfer between the target HCl translational and internal energy modes was investigated and it was found that the variation of the inelastic cross section has a negligible effect on the transport cross section. Therefore, a MD/QCT VHS equivalent collision cross section was obtained and along with the MD/QCT reaction cross sections were utilized in the full DSMC calculation of the flow field. It was found that for a low enthalpy reaction, in hypervelocity collisions, the TCE model with accurate Arrhenius rates appears to agree well with the rigorous MD/QCT calculations which shows that the reaction does not exhibit strong favoring. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL processes KW - MOLECULAR dynamics KW - OUTER space KW - SPACE environment KW - QUANTUM chemistry KW - ENERGY transfer N1 - Accession Number: 25298293; Ozawa, T. 1; Email Address: xo123@psu.edu Levin, D. A. 1; Email Address: dalevin@psu.edu Wysong, I. J. 2; Email Address: Ingrid.Wysong@edwards.af.mil; Affiliation: 1: Department of Aerospace Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802 2: Air Force Research Laboratory-Space and Missile Propulsion Division, Aerophysics Branch, Edwards Air Force Base, California 93524; Source Info: May2007, Vol. 19 Issue 5, p056102; Subject Term: CHEMICAL processes; Subject Term: MOLECULAR dynamics; Subject Term: OUTER space; Subject Term: SPACE environment; Subject Term: QUANTUM chemistry; Subject Term: ENERGY transfer; Number of Pages: 14p; Illustrations: 1 Diagram, 4 Charts, 22 Graphs; Document Type: Article L3 - 10.1063/1.2717692 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25298293&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - de Joseph Jr., C. A. AU - Demidov, V. I. AU - Kudryavtsev, A. A. T1 - Nonlocal effects in a bounded low-temperature plasma with fast electrons. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2007/05// VL - 14 IS - 5 M3 - Article SP - 057101 PB - American Institute of Physics SN - 1070664X AB - Effects associated with nonlocality of the electron energy distribution function (EEDF) in a bounded, low-temperature plasma containing fast electrons, can lead to a significant increase in the near-wall potential drop, leading to self-trapping of fast electrons in the plasma volume, even if the density of this group is only a small fraction (∼0.001%) of the total electron density. If self-trapping occurs, the fast electrons can substantially increase the rate of stepwise excitation, supply additional heating to slow electrons, and reduce their rate of diffusion cooling. Altering the source terms of these fast electrons will, therefore, alter the near-wall sheath and, through modification of the EEDF, a number of plasma parameters. Self-trapping of fast electrons is important in a variety of plasmas, including hollow-cathode discharges and capacitive rf discharges, and is especially pronounced in an afterglow plasma, which is a key phase of any pulse-modulated discharge. In the afterglow, the electron temperature is less than a few tenths of an electron volt, and the fast electrons will have energies typically greater than an electron volt. It is shown that in the afterglow plasma of noble gases, fast electrons, arising from Penning ionization of metastable atoms, can lead to the above condition and significantly change the plasma and sheath properties. Similar effects can be important in technologically relevant electronegative gas plasmas, where fast electrons can arise due to electron detachment in collisions of negative ions with atomic species. Both experimental and modeling results are presented to illustrate these effects. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA (Ionized gases) KW - ELECTRONS KW - DISTRIBUTION (Probability theory) KW - ELECTRON distribution KW - NOBLE gases N1 - Accession Number: 25298452; de Joseph Jr., C. A. 1 Demidov, V. I. 2 Kudryavtsev, A. A. 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Department of Physics, West Virginia University, Morgantown, West Virginia 26506 3: Department of Optics and Spectroscopy, St. Petersburg State University, 195904 St. Petersburg, Russia; Source Info: May2007, Vol. 14 Issue 5, p057101; Subject Term: PLASMA (Ionized gases); Subject Term: ELECTRONS; Subject Term: DISTRIBUTION (Probability theory); Subject Term: ELECTRON distribution; Subject Term: NOBLE gases; Number of Pages: 6p; Illustrations: 1 Diagram, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.2436470 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25298452&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shukla, A. AU - Jain, N. AU - Chona, R. T1 - A Review of Dynamic Fracture Studies in Functionally Graded Materials. JO - Strain JF - Strain Y1 - 2007/05// VL - 43 IS - 2 M3 - Article SP - 76 EP - 95 PB - Wiley-Blackwell SN - 00392103 AB - This article presents a review of dynamic fracture studies on functionally graded materials. A brief literature review on the fracture mechanics of graded materials is presented first. This is followed by a discussion on the higher-order asymptotic analysis of the transient elastic field surrounding the tip of a dynamically growing crack in a functionally graded material. A comprehensive experimental study of dynamic crack growth in model functionally graded material using the optical method of reflection photoelasticity and high-speed photography is then presented. The results are analysed to establish a generalised relationship between the crack velocity and the dynamic mode-I stress intensity factor (SIF). This relationship is found to be unique and is distinctly different from that previously established for the matrix material (polyester). Finally, an innovative experimental procedure is used to demonstrate the necessity of employing a fully transient stress-field representation in the analysis of optical data for an accurate prediction of the dynamic SIF history. [ABSTRACT FROM AUTHOR] AB - Copyright of Strain is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRACTURE mechanics KW - FUNCTIONALLY gradient materials KW - STRENGTH of materials KW - MATRIX logic KW - PHOTOELASTICITY KW - a-k relationships KW - asymptotic expansions KW - dynamic fracture KW - FGMs KW - photoelasticity KW - transients N1 - Accession Number: 24650460; Shukla, A. 1 Jain, N. 2 Chona, R. 3; Affiliation: 1: Department of Mechanical Engineering, University of Rhode Island, Kingston, RI 02881, USA 2: Corporate Research, Goodyear Tire and Rubber Company, Akron, OH 44305, USA 3: Structural Sciences Center, Air Vehicles Directorate, US Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7402, USA; Source Info: May2007, Vol. 43 Issue 2, p76; Subject Term: FRACTURE mechanics; Subject Term: FUNCTIONALLY gradient materials; Subject Term: STRENGTH of materials; Subject Term: MATRIX logic; Subject Term: PHOTOELASTICITY; Author-Supplied Keyword: a-k relationships; Author-Supplied Keyword: asymptotic expansions; Author-Supplied Keyword: dynamic fracture; Author-Supplied Keyword: FGMs; Author-Supplied Keyword: photoelasticity; Author-Supplied Keyword: transients; Number of Pages: 20p; Illustrations: 3 Black and White Photographs, 3 Diagrams, 14 Graphs; Document Type: Article L3 - 10.1111/j.1475-1305.2007.00323.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24650460&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - He, Guang S. AU - Zheng, Qingdong AU - Yong, Ken-Tye AU - Ryasnyanskiy, Aleksandr I. AU - Prasad, Paras N. AU - Urbas, Augustine T1 - Two-photon absorption based optical limiting and stabilization by using a CdTe quantum dot solution excited at optical communication wavelength of ∼1300 nm. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/04/30/ VL - 90 IS - 18 M3 - Article SP - 181108 PB - American Institute of Physics SN - 00036951 AB - This letter presents the results of two-photon study of CdTe quantum dots (QDs) in chloroform. The measured two-photon absorption (2PA) spectrum shows that 2PA coefficient at ∼1300 nm is ∼0.02 cm/GW. Based on a 1 cm path-length CdTe QD solution sample of 8 mg/ml concentration, irradiated by a focused ∼1300 nm laser beam of ∼160 fs duration, the nonlinear transmission could be changed from ∼100% to ∼20% when the input pulse energy was varied from ∼50 nJ to ∼10 μJ, demonstrating a superior optical limiting performance. The input laser fluctuation was significantly reduced after passing through the sample, indicating a remarkable optical stabilization behavior. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTONS KW - CADMIUM alloys KW - TELLURIUM alloys KW - QUANTUM dots KW - CHLOROFORM KW - ABSORPTION N1 - Accession Number: 25049842; He, Guang S. 1 Zheng, Qingdong 1 Yong, Ken-Tye 1 Ryasnyanskiy, Aleksandr I. 1 Prasad, Paras N. 1 Urbas, Augustine 2; Affiliation: 1: Institute for Lasers, Photonics and Biophotonics, State University of New York at Buffalo, Buffalo, New York 14260-3000 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7702; Source Info: 4/30/2007, Vol. 90 Issue 18, p181108; Subject Term: PHOTONS; Subject Term: CADMIUM alloys; Subject Term: TELLURIUM alloys; Subject Term: QUANTUM dots; Subject Term: CHLOROFORM; Subject Term: ABSORPTION; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 3p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1063/1.2734904 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25049842&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fan, Li AU - Fallahi, Mahmoud AU - Hader, Jörg AU - Zakharian, Aramais R. AU - Moloney, Jerome V. AU - Stolz, Wolfgang AU - Koch, Stephan W. AU - Bedford, Robert AU - Murray, James T. T1 - Linearly polarized dual-wavelength vertical-external-cavity surface-emitting laser. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/04/30/ VL - 90 IS - 18 M3 - Article SP - 181124 PB - American Institute of Physics SN - 00036951 AB - The authors demonstrate the multiwatt linearly polarized dual-wavelength operation in an optically pumped vertical-external-cavity surface-emitting laser by means of an intracavity tilted Fabry-Perot etalon and a Brewster window. The sum frequency generation from the lithium triborate crystal pumped by this laser confirms that these two wavelengths oscillate simultaneously. Over 30 dB side-mode suppression can be achieved at dual wavelengths with a spectral spacing of 2.1 nm. The output power is slightly reduced by the intracavity Fabry-Perot etalon and Brewster window. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - LITHIUM compounds KW - BORATE crystals KW - CRYSTAL oscillators KW - POLARIZATION (Nuclear physics) N1 - Accession Number: 25049786; Fan, Li 1 Fallahi, Mahmoud 1 Hader, Jörg 2 Zakharian, Aramais R. 2 Moloney, Jerome V. 2 Stolz, Wolfgang 3 Koch, Stephan W. 3 Bedford, Robert 4 Murray, James T. 5; Affiliation: 1: College of Optical Sciences, University of Arizona, Tucson, Arizona 85721 2: Arizona Center for Mathematical Science, University of Arizona, Tucson, Arizona 85721 and College of Optical Sciences, University of Arizona, Tucson, Arizona 85721 3: Department of Physics and Material Sciences Center, Philipps Universität Marburg, Renthof 5, 35032 Marburg, Germany 4: Sensors Directorate, Air Force Research Laboratory, 2241 Avionics Cir. Wright-Patterson AFB, Ohio 45433 5: Areté Associates, 3194 N. Swan Road, Tucson, Arizona 85712; Source Info: 4/30/2007, Vol. 90 Issue 18, p181124; Subject Term: LASERS; Subject Term: LITHIUM compounds; Subject Term: BORATE crystals; Subject Term: CRYSTAL oscillators; Subject Term: POLARIZATION (Nuclear physics); NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.2735554 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25049786&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Artús, L. AU - Cuscó, R. AU - Alarcón-Lladó, E. AU - González-Díaz, G. AU - Mártil, I. AU - Jiménez, J. AU - Wang, B. AU - Callahan, M. T1 - Isotopic study of the nitrogen-related modes in N+-implanted ZnO. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/04/30/ VL - 90 IS - 18 M3 - Article SP - 181911 PB - American Institute of Physics SN - 00036951 AB - Micro-Raman measurements were performed to study the nitrogen-related modes in ZnO samples implanted with N+. The two stable N isotopes, 14N and 15N, were implanted. Distinct peaks at 277 and 512 cm-1 are observed irrespective of the implanted isotope, both before and after rapid thermal annealing. The insensitivity of the mode frequencies to the implanted isotope rules out the explanation of these modes as local vibrational modes involving N motion. These modes were not detected in ZnO samples implanted with Zn+, O+, or P+, which suggests that they may be associated with distortions/defects favored by the presence of N. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide thin films KW - NITROGEN isotopes KW - ANNEALING of crystals KW - ISOTOPES KW - RESEARCH KW - OPTOELECTRONIC devices KW - EPITAXY N1 - Accession Number: 25049836; Artús, L. 1 Cuscó, R. 1 Alarcón-Lladó, E. 1 González-Díaz, G. 2 Mártil, I. 2 Jiménez, J. 3 Wang, B. 4 Callahan, M. 5; Affiliation: 1: Institut Jaume Almera, Consell Superior d’Investigacions Científiques (CSIC), Lluís Solé i Sabarís s.n., 08028 Barcelona, Spain 2: Departamento de Física Aplicada III, Facultad de Física, Universidad Complutense, 28040 Madrid, Spain 3: Deptartamento Física de la Materia Condensada, ETSII, Universidad de Valladolid, P. del sn, 47011, Valladolid, Spain 4: Solid State Scientific Corporation, 27-2 Wright Road, Hollis, New Hampshire 03049 5: Air Force Research Laboratory, Sensors Directorate, Electromagnetics Technology Division, Optoelectronic Technology Branch, Hanscom AFB, Massachusetts 01731-2909; Source Info: 4/30/2007, Vol. 90 Issue 18, p181911; Subject Term: ZINC oxide thin films; Subject Term: NITROGEN isotopes; Subject Term: ANNEALING of crystals; Subject Term: ISOTOPES; Subject Term: RESEARCH; Subject Term: OPTOELECTRONIC devices; Subject Term: EPITAXY; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.2734474 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25049836&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lively, Erin A. AU - Schmidtt, Nissa L. AU - Casabar, Richard C. T. AU - Wallace, Andrew D. AU - Gardiner, Catherine S. AU - DeKrey, Gregory K. T1 - Endosulfan-α Induces CYP2B6 and CYP3A4 by Activating the Pregnane X Receptor. JO - FASEB Journal JF - FASEB Journal Y1 - 2007/04/30/ VL - 21 IS - 6 M3 - Article SP - A1183 EP - A1183 AB - Endosulfan can cause dysregulation of testosterone homeostasis in rodents. Postulated mechanisms involve activation of the pregnane X receptor (PXR) and/or the constitutive androstane receptor (CAR) to induce cytochrome P450 (CYP) enzymes. CYP 3A11 induction was tested using wild type, PXR-null, and human PXR (hPXR)-transgenic mice, as evidenced by metabolism of the anesthetic tribromoethanol (TBE). A significant (p < 0.05) reduction in TBE-induced sleep times, relative to controls, was observed in both wild type and hPXR mice pretreated with endosulfan-α at 2.5 mg/Kg/day for seven days, but no sleep time change was observed for PXR-null mice. CYP promoter activation was tested using HepG2 cells transiently transfected with plasmids containing constructs of CYP 3A4-luciferase, CYP 2B6-luciferase, and either hPXR or mouse CAR (mCAR). Exposure to endosulfan80%) is formed from the polynaphthalene precursor. Dilatometry was used to determine the linear coefficient of thermal expansion (CTE) of various BODA-derived glassy carbon. The measured CTE was similar to other glassy carbon-based systems ranging from 3.20 to 6.92×10−6 °C−1 over 20–1000°C. An increase in short-range order was apparent when polynaphthalene networks were carbonized to 1500°C; the CTE observed for such thermal cycling was 2.85–2.93×10−6 °C−1 over 20–1000°C. Using dilatometry also provided insight on the carbonization mechanism to provide optimization of glassy carbon yields during thermal cycling. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONOMERS KW - CARBONIZATION KW - THERMAL expansion KW - DILATOMETERS KW - NAPHTHALENE N1 - Accession Number: 24616535; Iacono, Scott T. 1 Perpall, Mark W. 1 Wapner, Phillip G. 2 Hoffman, Wesley P. 3 Smith, Dennis W. 1; Email Address: dwsmith@clemson.edu; Affiliation: 1: Department of Chemistry, Advanced Materials Research Laboratories and Center for Optical Materials Science and Engineering Technologies (COMSET), Clemson University, Clemson, SC 29634, USA 2: ERC Inc., 10 East Saturn Boulevard, Edwards Air Force Base, CA 93524, USA 3: Air Force Research Laboratory, 10 East Saturn Boulevard, Edwards Air Force Base, CA 93524, USA; Source Info: Apr2007, Vol. 45 Issue 5, p931; Subject Term: MONOMERS; Subject Term: CARBONIZATION; Subject Term: THERMAL expansion; Subject Term: DILATOMETERS; Subject Term: NAPHTHALENE; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.carbon.2007.01.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24616535&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rodriguez, Mauricio Rodriguez AU - Wales, Melinda E. AU - Good, Theresa AU - Wild, James R. T1 - Pyrimidine nucleotide de novo biosynthesis as a model of metabolic control. JO - FASEB Journal JF - FASEB Journal Y1 - 2007/04/15/ VL - 21 IS - 5 M3 - Article SP - A265 EP - A265 AB - This research presents a thorough investigation and description of metabolic control dynamics in vivo and in silico using as a model de novo pyrimidine biosynthesis in E. coli. The studies described provide a unique effort toward combining mathematical analysis with dynamic transition experimental data and emphasize the significance of providing a quantitative framework for understanding metabolic control. Biochemical flux through the pathway was analyzed under dynamic conditions using middle-exponential growth and steady state cultures. Fluctuations of pathway intermediates and end products transitions were quantified in response to physiological perturbation. Rapid versus long-term equilibrium shifts in metabolic adaptation was analyzed. Finally, monitoring enzymatic activity levels during metabolic transitions provided insight into the interaction of genetic and biochemical mechanisms of regulation. Thus, it was possible to construct a robust mathematical model that faithfully represented, with a remarkable predictability, the nature of the metabolic response to specific environmental perturbations. These studies constitute a significant contribution to quantitative biochemistry as well as in the field of metabolic control, which can be extended to other cellular processes as well as different organisms. [ABSTRACT FROM AUTHOR] AB - Copyright of FASEB Journal is the property of Federation of American Society for Experimental Biology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METABOLIC regulation KW - MATHEMATICAL analysis KW - ESCHERICHIA coli KW - FLUCTUATIONS (Physics) KW - BIOCHEMISTRY N1 - Accession Number: 25632784; Rodriguez, Mauricio Rodriguez 1,2 Wales, Melinda E. 2 Good, Theresa 3 Wild, James R. 2; Affiliation: 1: Cellular Dynamics & Engineering, The National Academies/Air Force Research Laboratory, 2729 R Street, Bldg. 837, Wright-Patterson AFB, OH, 45433-5707 2: Biochemistry & Biophysics, Texas A&M University, 2128 TAMU, College Station, TX, 77843-2128 3: Chemical & Biochemical Engineering, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD, 21250; Source Info: Apr2007, Vol. 21 Issue 5, pA265; Subject Term: METABOLIC regulation; Subject Term: MATHEMATICAL analysis; Subject Term: ESCHERICHIA coli; Subject Term: FLUCTUATIONS (Physics); Subject Term: BIOCHEMISTRY; Number of Pages: 1/5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25632784&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Derkowska, B. AU - Wojdyła, M. AU - Bała, W. AU - Jaworowicz, K. AU - Karpierz, M. AU - Grote, James G. AU - Krupka, O. AU - Kajzar, F. AU - Sahraoui, B. T1 - Influence of different peripheral substituents on the nonlinear optical properties of cobalt phthalocyanine core. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/04/15/ VL - 101 IS - 8 M3 - Article SP - 083112 PB - American Institute of Physics SN - 00218979 AB - In this article, we show how the substituting different peripheral substituents around the cobalt phthalocyanine core correlate with nonlinear optical properties. We present the results on nonlinear optical properties of solution of cobalt phthalocyanine (CoPc), cobalt phthalocyanine with DNA-CTMA surfactant complex (CoPc-DNA-CTMA), and cobalt phthalocyanine with liquid crystal (CoPc-LC) measured by degenerate four-wave mixing (DFWM) method at the 532 nm wavelength region. We found that the values of third-order nonlinear optical susceptibility (χ<3>) of CoPc-LC and CoPc-DNA-CTMA increase in comparison with the value of the third-order nonlinear optical susceptibilities of CoPc. We supposed that this is caused by increase of the charge-transfer effects and of the dipole moments of the molecule with the increase of the chain length. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COBALT KW - DIPOLE moments KW - PHTHALOCYANINES KW - LIQUID crystals KW - SURFACE active agents N1 - Accession Number: 24986210; Derkowska, B. 1 Wojdyła, M. 1 Bała, W. 1 Jaworowicz, K. 2 Karpierz, M. 2 Grote, James G. 3 Krupka, O. 4 Kajzar, F. 4 Sahraoui, B. 4; Affiliation: 1: Institute of Physics, N. Copernicus University, Grudzia[Polish_hook]dzka 5/7, 87-100 Torun, Poland 2: Optics Division, Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-681 Warsaw, Poland 3: Air Force Research Laboratory Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, 3005 Hobson Way, Dayton, Ohio 45433-7707 4: Laboratory POMA, UMR CNRS 6136, University of Angers, 2 Boulevard Lavoisier, 49045 Angers, France; Source Info: 4/15/2007, Vol. 101 Issue 8, p083112; Subject Term: COBALT; Subject Term: DIPOLE moments; Subject Term: PHTHALOCYANINES; Subject Term: LIQUID crystals; Subject Term: SURFACE active agents; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 325130 Synthetic Dye and Pigment Manufacturing; NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; Number of Pages: 8p; Illustrations: 3 Diagrams, 2 Charts, 8 Graphs; Document Type: Article L3 - 10.1063/1.2719281 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24986210&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiao, C. Q. AU - Garscadden, A. AU - Ganguly, B. N. T1 - Charge transfer reactions in Xe plasma expansion. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/04/15/ VL - 101 IS - 8 M3 - Article SP - 083308 PB - American Institute of Physics SN - 00218979 AB - Charge transfer reactions of fast Xe ions with hydrocarbons including methane (CH4), ethene (C2H4), and propane (C3H8) are studied by adding these hydrocarbon gases into a cross flowing Xe plasma expansion. Branching ratios and relative reaction rates for the charge transfers of fast Xe+ with each of the three hydrocarbon gases are measured under different rf powers of the inductively coupled Xe discharge. For CH4/Xe system, we find that fast Xe+ reacts readily with CH4 generating CH4+ and CH3+ in a ratio of 1:0.56, with an estimated rate coefficient of (2.3±0.3)×10-10 cm3/s at 75 W rf power which slowly increases to (2.9±0.3)×10-10 cm3/s at 250 W (error bars reflect only the uncertainties due to the unknown extent of the ion recombination that follows the charge transfer reaction). These observed charge transfer reactions are made possible by the kinetically excited Xe ions produced by free expansion of the plasma. For the C2H4/Xe system product ions C2H4+ and C2H2+ are observed, and for C3H8/Xe, C2H4+ and C2H5+ and minor product ions including C2H2+ and C3H7+ are observed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - XENON KW - CHARGE transfer KW - HYDROCARBONS -- Research KW - METHANE KW - RESEARCH KW - PROPANE KW - BRANCHING ratios (Nuclear physics) KW - ION recombination N1 - Accession Number: 24986146; Jiao, C. Q. 1 Garscadden, A. 2 Ganguly, B. N. 2; Affiliation: 1: Innovative Scientific Solutions Inc., Dayton, Ohio 45440-3638 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7251; Source Info: 4/15/2007, Vol. 101 Issue 8, p083308; Subject Term: XENON; Subject Term: CHARGE transfer; Subject Term: HYDROCARBONS -- Research; Subject Term: METHANE; Subject Term: RESEARCH; Subject Term: PROPANE; Subject Term: BRANCHING ratios (Nuclear physics); Subject Term: ION recombination; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 424710 Petroleum Bulk Stations and Terminals; NAICS/Industry Codes: 454312 Liquefied petroleum gas (bottled gas) dealers; Number of Pages: 6p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.2721747 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24986146&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kwon, C. AU - Young, J. L. AU - James, R. G. AU - Levin, George A. AU - Haugan, Timothy J. AU - Barnes, Paul N. T1 - Effects of local artificial defects in multifilamentary coated conductors with patterned links. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/04/15/ VL - 101 IS - 8 M3 - Article SP - 083908 PB - American Institute of Physics SN - 00218979 AB - Multifilamentary coated conductor (MFCC) samples with patterned links have been studied using transport and scanning laser microscopy (SLM) techniques. Striation patterns are fashioned to define multiple filaments with discretely placed superconducting (SC) links between the filaments for current sharing and redistribution. After initial measurements, an artificial incision is made on a filament to mimic a disabled filament. The changes in global and local current transport characteristics are noted for in terms of the redistribution of current flow and the modification of local dissipation. Our results show that the patterned links between filaments play a vital role in redistributing current and encouraging current sharing. We find that the main factors in limiting the current-carrying capability of MFCC samples are local current density increases, which we call “current crowding.” The susceptible areas for current crowding are several: (1) filaments adjacent to the disabled ones, since the intact filaments have to carry extra current, (2) the links where current redistribution occurs, and (3) the partially blocked filament. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductors KW - MICROSCOPY KW - ENERGY dissipation KW - ELECTRIC currents KW - METAL fibers N1 - Accession Number: 24986157; Kwon, C. 1 Young, J. L. 1 James, R. G. 1 Levin, George A. 2 Haugan, Timothy J. 2 Barnes, Paul N. 2; Affiliation: 1: Department of Physics and Astronomy, California State University, Long Beach, California 90840 2: Propulsion Directorate, Air Force Research Laboratory, 1950 Fifth Street, Wright-Patterson Air Force Base, Ohio 45433-7919; Source Info: 4/15/2007, Vol. 101 Issue 8, p083908; Subject Term: ELECTRIC conductors; Subject Term: MICROSCOPY; Subject Term: ENERGY dissipation; Subject Term: ELECTRIC currents; Subject Term: METAL fibers; Number of Pages: 6p; Illustrations: 1 Color Photograph, 3 Black and White Photographs, 1 Graph; Document Type: Article L3 - 10.1063/1.2716211 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24986157&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fang, Z.-Q. AU - Claflin, B. AU - Look, D. C. AU - Farlow, G. C. T1 - Electron irradiation induced deep centers in hydrothermally grown ZnO. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/04/15/ VL - 101 IS - 8 M3 - Article SP - 086106 PB - American Institute of Physics SN - 00218979 AB - An n-type hydrothermally grown ZnO sample becomes semi-insulating (ρ~108 Ω cm) after 1-MeV electron-irradiation. Deep traps produced by the irradiation were studied by thermally stimulated current spectroscopy. The dominant trap in the as-grown sample has an activation energy of 0.24 eV and is possibly related to LiZn acceptors. However, the electron irradiation introduces a new trap with an activation energy of 0.15 eV, and other traps of energy 0.30 and 0.80 eV, respectively. From a comparison of these results with positron annihilation experiments and density functional theory, we conclude that the 0.15-eV trap may be related to VZn. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide KW - PARTICLES (Nuclear physics) KW - IRRADIATION KW - THERMALLY stimulated currents KW - SPECTRUM analysis KW - DENSITY functionals N1 - Accession Number: 24986233; Fang, Z.-Q. 1 Claflin, B. 1 Look, D. C. 1 Farlow, G. C. 2; Affiliation: 1: Semiconductor Research Center, Wright State University, Dayton, Ohio 45435 and Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, Ohio 45435 2: Physics Department, Wright State University, Dayton, Ohio 45433; Source Info: 4/15/2007, Vol. 101 Issue 8, p086106; Subject Term: ZINC oxide; Subject Term: PARTICLES (Nuclear physics); Subject Term: IRRADIATION; Subject Term: THERMALLY stimulated currents; Subject Term: SPECTRUM analysis; Subject Term: DENSITY functionals; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.2719003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24986233&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Das, G.P. AU - Dudis, D.S. AU - Yeates, A.T. AU - Blaudeau, J.-P. T1 - An ab initio fragment orbital theory (AFOT) for molecules: Application to some platinum poly-ynes JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2007/04/11/ VL - 438 IS - 1-3 M3 - Article SP - 89 EP - 92 SN - 00092614 AB - Abstract: The AFOT formalism, which treats a molecule fragment by fragment, has hitherto been restricted to primarily π-electron systems. The method has been successfully applied to calculate the energetics and two-photon absorption properties of several organic molecules. The present work extends the formalism to include organometallic compounds, allowing non-π like valence framework. The extension also allows the use of effective core potentials (ECP). We apply the present modified AFOT formalism to calculate the low-lying excited states of a series of platinum poly-yne oligomers. Comparison with experiment indicates the suitability of the model for such compounds. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLES (Nuclear physics) KW - ORGANIC compounds KW - ORGANOMETALLIC compounds KW - OLIGOMERS N1 - Accession Number: 24546112; Das, G.P. 1; Email Address: Alan.Yeates@wpafb.af.mil Dudis, D.S. 1 Yeates, A.T. 1 Blaudeau, J.-P. 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, United States 2: High Performance Technology Inc., ASC/HP, Wright Patterson Air Force Base, OH 45433, United States; Source Info: Apr2007, Vol. 438 Issue 1-3, p89; Subject Term: PARTICLES (Nuclear physics); Subject Term: ORGANIC compounds; Subject Term: ORGANOMETALLIC compounds; Subject Term: OLIGOMERS; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.cplett.2006.11.113 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24546112&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Joseph M. Slocik AU - Felicia Tam AU - Naomi J. Halas AU - Rajesh R. Naik T1 - Peptide-Assembled Optically Responsive Nanoparticle Complexes. JO - Nano Letters JF - Nano Letters Y1 - 2007/04/11/ VL - 7 IS - 4 M3 - Article SP - 1054 EP - 1058 SN - 15306984 AB - The design of active nanostructures whose form and properties can be modulated by remote means is an important challenge in nanoscience. Here we report two types of active nanoparticle complexes, with properties controlled by near-infrared illumination, resulting from the assembly of photothermally responsive plasmonic nanoparticles with thermally labile biomolecular linkers. Au nanoshells (NS) and quantum dots (QD) are assembled using coiled-coil peptides into NS−NS and NS−QD complexes. Illumination of the NS−NS complexes results in reversible disassembly reassembly, while illumination of NS−QD complexes results in a large, reproducible modulation of the quantum dot fluorescence without disassembly of the nanoparticle−peptide complex. [ABSTRACT FROM AUTHOR] AB - Copyright of Nano Letters is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURES KW - PLASMONS (Physics) KW - QUANTUM dots KW - SILVER N1 - Accession Number: 24703296; Joseph M. Slocik 1 Felicia Tam 1 Naomi J. Halas 1 Rajesh R. Naik 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory,Wright−Patterson AFB, Ohio 45433-7702, Department of Physics and Astronomy,Rice University, 6100 Main Street, MS-366, Houston, Texas 77005-1892, andDepartment of Electrical and Computer Engineering, Rice University,6100 Main Street, MS-366, Houston, Texas 77005-1892; Source Info: Apr2007, Vol. 7 Issue 4, p1054; Subject Term: NANOSTRUCTURES; Subject Term: PLASMONS (Physics); Subject Term: QUANTUM dots; Subject Term: SILVER; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24703296&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yongchun Zhong AU - Kam Sing Wong AU - Weili Zhang AU - Look, D. C. T1 - Radiative Recombination and Ultra-long Exciton Photoluminescence Lifetime in GaN Freestanding Film via Two-photon Excitation. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/04/10/ VL - 893 IS - 1 M3 - Article SP - 305 EP - 306 PB - American Institute of Physics SN - 0094243X AB - We have measured the photoluminescence (PL) lifetime of a freestanding GaN film using one-photon and two-photon excitation to demonstrate the dramatic difference in exciton recombination dynamics at the surface and in the bulk. An ultra-long exciton PL lifetime of 17.2 ns at 295 K is observed from a GaN freestanding film using two-photon excitation, whereas less than 100 ps lifetime is observed for one-photon excitation, suggesting that nonradiative processes from surface defects account for the short PL lifetime measured. A monotonic increase in two-photon excited PL lifetime with increasing temperature shows good agreement with the theoretical predictions, indicating that radiative recombination dominates for bulk excited state relaxation processes. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOLUMINESCENCE KW - GALLIUM nitride KW - THIN films KW - EXCITON theory KW - RELAXATION (Nuclear physics) KW - exciton KW - Time resolved KW - Ultrafast processes N1 - Accession Number: 24985548; Yongchun Zhong 1 Kam Sing Wong 1 Weili Zhang 2 Look, D. C. 3; Affiliation: 1: Department of Physics, Hong Kong University of Science and Technology, Kowloon, Hong Kong, P.R. China 2: School of Electrical and Computer Engineering, Oklahoma State University, Oklahoma 74078 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433; Source Info: 2007, Vol. 893 Issue 1, p305; Subject Term: PHOTOLUMINESCENCE; Subject Term: GALLIUM nitride; Subject Term: THIN films; Subject Term: EXCITON theory; Subject Term: RELAXATION (Nuclear physics); Author-Supplied Keyword: exciton; Author-Supplied Keyword: Time resolved; Author-Supplied Keyword: Ultrafast processes; Number of Pages: 2p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.2729889 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24985548&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chromik, Richard R. AU - Baker, Colin C. AU - Voevodin, Andrey A. AU - Wahl, Kathryn J. T1 - In situ tribometry of solid lubricant nanocomposite coatings JO - Wear JF - Wear Y1 - 2007/04/10/ VL - 262 IS - 9/10 M3 - Article SP - 1239 EP - 1252 SN - 00431648 AB - Abstract: The friction and wear behavior of nanocomposite coatings comprised of yttria stabilized zirconia (YSZ), Au, carbon and MoS2 were studied by in situ tribometry in both dry nitrogen (3–5% RH) and humid air (35–45% RH). Transfer film formation and interfacial dynamics were evaluated by direct observation of the sliding contact through a sapphire hemisphere. Four different third-body velocity accommodation modes (VAMs) were identified: (1) interfacial sliding, (2) interfacial sliding combined with transfer film shearing, (3) plowing and (4) local plowing and transfer film extrusion. The first two VAMs were associated with low, stable friction in dry and humid environments. The second two VAMs were associated with high friction in dry conditions and increased wear. Tribological performance and VAMs were also correlated with coating composition and mechanical properties. Friction spiking occurred for coatings with greater YSZ content. Harder coatings exhibited high friction run-in that was more pronounced for coatings with high carbon content. In situ experiments demonstrated that friction and wear performance was controlled by stable transfer film formation and VAMs associated with a lubricating condition (interfacial sliding or transfer film shearing). [Copyright &y& Elsevier] AB - Copyright of Wear is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COATING processes KW - ZIRCONIUM oxide KW - CARBON KW - NITROGEN KW - In situ tribometry KW - MoS2 KW - Nanocomposite KW - Transfer film KW - Velocity accommodation N1 - Accession Number: 24383792; Chromik, Richard R. 1,2 Baker, Colin C. 1,3 Voevodin, Andrey A. 3 Wahl, Kathryn J. 2; Email Address: kathryn.wahl@nrl.navy.mil; Affiliation: 1: North Carolina State University, Department of Physics, Raleigh, NC 27695, United States 2: U.S. Naval Research Laboratory, Code 6176, Tribology Section, Washington, DC 20375, United States 3: U.S. Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, OH 45433, United States; Source Info: Apr2007, Vol. 262 Issue 9/10, p1239; Subject Term: COATING processes; Subject Term: ZIRCONIUM oxide; Subject Term: CARBON; Subject Term: NITROGEN; Author-Supplied Keyword: In situ tribometry; Author-Supplied Keyword: MoS2; Author-Supplied Keyword: Nanocomposite; Author-Supplied Keyword: Transfer film; Author-Supplied Keyword: Velocity accommodation; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.wear.2007.01.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24383792&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Plunkett, B. AU - Cazacu, O. AU - Barlat, F. T1 - Orthotropic Yield Criteria for modeling the combined effects of anisotropy and strength differential effects in sheet metals. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/04/07/ VL - 907 IS - 1 M3 - Article SP - 396 EP - 404 PB - American Institute of Physics SN - 0094243X AB - In this paper, yield functions describing the anisotropic behavior of textured metals are proposed. These yield functions are extensions to orthotropy of the isotropic yield function proposed by Cazacu et al.. Anisotropy is introduced using linear transformations of the stress deviator. It is shown that if two linear transformations are considered, the proposed anisotropic yield function represents with great accuracy both the tensile and compressive anisotropy in yield stresses and r-values of materials with hcp crystal structure and of metal sheets with bcc crystal structure that exhibit asymmetry between tensile and compressive behavior. Furthermore, it is demonstrated that the proposed formulations can describe very accurately the anisotropic behavior of metal sheets whose tensile and compressive stresses are equal. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANISOTROPY KW - METALS KW - MATTER -- Properties KW - METALLURGY KW - CRYSTALLOGRAPHY KW - Anisotropy KW - Sheet metal KW - Yield Criterion N1 - Accession Number: 24721474; Plunkett, B. 1 Cazacu, O. 2 Barlat, F. 3; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Eglin Air Force Base, FL 32542 2: Department of Mechanical and Aerospace Engineering, University of Florida/REEF, Shalimar, FL 32579-1163 3: Alloy Technology and Materials Research Division, Alcoa Inc., Alcoa Technical Center, 100 Technical Drive, Alcoa Center, PA 15069-0001; Source Info: 2007, Vol. 907 Issue 1, p396; Subject Term: ANISOTROPY; Subject Term: METALS; Subject Term: MATTER -- Properties; Subject Term: METALLURGY; Subject Term: CRYSTALLOGRAPHY; Author-Supplied Keyword: Anisotropy; Author-Supplied Keyword: Sheet metal; Author-Supplied Keyword: Yield Criterion; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 9p; Illustrations: 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.2729546 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24721474&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Nesterov, Vladimir N. AU - Sarkisov, Sergey S. AU - Curley, Michael J. AU - Urbas, Augustine T1 - An ortho­rhom­bic polymorph of 3,5-bis­[4-(dimethyl­amino)benzyl­idene]-1-methyl-4-piperidone. JO - Acta Crystallographica: Section E (Wiley-Blackwell) JF - Acta Crystallographica: Section E (Wiley-Blackwell) Y1 - 2007/04// VL - 63 IS - 4 M3 - Other SP - o1785 EP - o1787 SN - 16005368 AB - The title compound, C24H29N3O, is an ortho­rhom­bic modification of the known monoclinic polymorph. In the crystal structure, weak C—H⋯N and C—H⋯O hydrogen bonds help to establish a non-centrosymmetric packing arrangement. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Crystallographica: Section E (Wiley-Blackwell) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PIPERIDONES KW - HYDROGEN bonding KW - ORGANIC compounds KW - HETEROCYCLIC compounds KW - ORGANIC chemistry N1 - Accession Number: 24732913; Nesterov, Vladimir N. 1; Email Address: vnesterov@nmhu.edu Sarkisov, Sergey S. 2 Curley, Michael J. 3 Urbas, Augustine 4; Affiliation: 1: Department of Natural Sciences, New Mexico Highlands University, Las Vegas, New Mexico 87701, USA 2: SSS Optical Technologies, LLC, 515 Sparkman Drive, Suite 122, Huntsville, Alabama 35816, USA 3: Department of Physics, Alabama A & M University, Normal, Alabama 35762, USA 4: Air Force Research Laboratory/MLPJ, 3005 Hobson Way Bldg 651, Wright Patterson Air Force Base, Ohio 45433-7702, USA; Source Info: Apr2007, Vol. 63 Issue 4, po1785; Subject Term: PIPERIDONES; Subject Term: HYDROGEN bonding; Subject Term: ORGANIC compounds; Subject Term: HETEROCYCLIC compounds; Subject Term: ORGANIC chemistry; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 1p; Illustrations: 4 Diagrams, 2 Charts; Document Type: Other L3 - 10.1107/S1600536807011270 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24732913&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lorah, Michelle M. AU - Dyer, Linda Jo AU - Burris, David R. T1 - Anaerobic Biodegradation and Hydrogeochemical Controls on Natural Attenuation of Trichloroethene in an Inland Forested Wetland. JO - Bioremediation Journal JF - Bioremediation Journal Y1 - 2007/04//Apr-Jun2007 VL - 11 IS - 2 M3 - Article SP - 85 EP - 102 PB - Taylor & Francis Ltd SN - 10889868 AB - A field and laboratory investigation of natural attenuation, focusing on anaerobic biodegradation, was conducted in a forested wetland where a plume of trichloroethene discharges from a sand aquifer through organic-rich wetland and stream-bottom sediments. The rapid response of the wetland hydrology to precipitation events altered groundwater flow and geochemistry during wet conditions in the spring compared to the drier conditions in the summer and fall. During dry conditions, partial reductive dechlorination of trichloroethene to cis-1,2-dichloroethene occurred in methanogenic wetland porewater. Influx of oxygenated recharge during wet conditions resulted in a change from methanogenic to iron-reducing conditions and a lack of 1,2-dichloroethene production in the wet spring conditions. During these wet conditions, dilution was the primary attenuation mechanism evident for trichloroethene in the wetland porewater. Trichloroethene degradation was insignificant in anaerobic microcosms constructed with the shallow wetland sediment, and microbiological analyses showed a low microbial biomass and absence of known dehalorespiring microorganisms. Despite the typically organic-rich characteristic of wetland sediments, natural attenuation by anaerobic degradation may not be an effective groundwater remediation for chlorinated solvents at all sites. [ABSTRACT FROM AUTHOR] AB - Copyright of Bioremediation Journal is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HAZARDOUS wastes -- Natural attenuation KW - BIODEGRADATION KW - FORESTED wetlands KW - RIVER sediments KW - WETLAND hydrology KW - GROUNDWATER flow KW - AQUIFERS KW - biodegradation KW - chlorinated solvents KW - groundwater contamination KW - natural attenuation KW - trichloroethene KW - wetlands N1 - Accession Number: 25359886; Lorah, Michelle M. 1; Email Address: mmlorah@usgs.gov Dyer, Linda Jo 1 Burris, David R. 2; Affiliation: 1: U.S. Geological Survey, MD-DE-DC Water Science Center, Baltimore, Maryland, USA 2: Air Force Research Laboratory, Tyndall Air Force Base, Florida, USA; Source Info: Apr-Jun2007, Vol. 11 Issue 2, p85; Subject Term: HAZARDOUS wastes -- Natural attenuation; Subject Term: BIODEGRADATION; Subject Term: FORESTED wetlands; Subject Term: RIVER sediments; Subject Term: WETLAND hydrology; Subject Term: GROUNDWATER flow; Subject Term: AQUIFERS; Author-Supplied Keyword: biodegradation; Author-Supplied Keyword: chlorinated solvents; Author-Supplied Keyword: groundwater contamination; Author-Supplied Keyword: natural attenuation; Author-Supplied Keyword: trichloroethene; Author-Supplied Keyword: wetlands; NAICS/Industry Codes: 562211 Hazardous Waste Treatment and Disposal; Number of Pages: 18p; Illustrations: 1 Chart, 9 Graphs, 2 Maps; Document Type: Article L3 - 10.1080/10889860701429294 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25359886&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wilson, Katherine A. AU - Salas, Eduardo AU - Priest, Heather A. AU - Andrews, Dee T1 - Errors in the heat of battle: taking a closer look at shared cognition breakdowns through teamwork. JO - Human Factors JF - Human Factors Y1 - 2007/04// VL - 49 IS - 2 M3 - journal article SP - 243 EP - 256 SN - 00187208 AB - Objective: We developed a theoretically based taxonomy for classifying shared cognition breakdowns related to teamwork which contribute to fratricide incidents.Background: Fratricide on the battlefield is an inescapable cost of war. A number of technological advancements have been made in terms of combat identification systems to reduce the risk of these incidents. However, fratricide continues to occur at alarming rates.Method: We take a human-centered approach to understanding errors leading to fratricide incidents by focusing on shared cognition. We turn to the literature and provide the theoretical foundations for an error classification taxonomy to improve understanding of why fratricide incidents occur.Results: Based on our review of the literature, we identified a number of problem areas leading to fratricide incidents. However, many of the cited contributing factors were broad terms (e.g., poor coordination) and did little to tell us why the breakdown occurred and where improvements are needed. Therefore, we chose to focus on one specific area--teamwork breakdowns--and discuss in depth how these breakdowns contribute to fratricide.Conclusion: In this paper, we take a first step toward proposing a taxonomy that allows for the diagnostic assessment of what causes teamwork breakdowns in fratricide. We understand that a taxonomy is only as good as the data available and encourage richer case studies from which to learn.Application: To apply this taxonomy in an operational setting, we provide a set of behavioral markers that can be used to identify teamwork breakdowns on the battlefield. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRATRICIDE KW - BATTLEFIELDS KW - HUMAN error KW - TAXONOMY KW - TECHNOLOGICAL innovations KW - UNITED States. Army N1 - Accession Number: 24454852; Wilson, Katherine A. 1; Email Address: kwilson@ist.ucf.edu Salas, Eduardo 2 Priest, Heather A. 1 Andrews, Dee 3; Affiliation: 1: Research Assistant, Institute for Simulation & Training, Orlando, Florida 2: Professor of Psychology and Trustee Chair, University of Central Florida 3: Senior Scientist, Human Effectiveness Directorate, Air Force Research Laboratory, Mesa, Arizona; Source Info: Apr2007, Vol. 49 Issue 2, p243; Subject Term: FRATRICIDE; Subject Term: BATTLEFIELDS; Subject Term: HUMAN error; Subject Term: TAXONOMY; Subject Term: TECHNOLOGICAL innovations; Company/Entity: UNITED States. Army; NAICS/Industry Codes: 712120 Historical Sites; NAICS/Industry Codes: 928110 National Security; Number of Pages: 14p; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24454852&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Melvin, William L. AU - Davis, Mark E. T1 - Adaptive Cancellation Method for Geometry-Induced Nonstationary Bistatic Clutter Environments. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2007/04// VL - 43 IS - 2 M3 - Article SP - 651 EP - 672 SN - 00189251 AB - This paper describes and characterizes a new bistatic space-time adaptive processing (STAP) clutter mitigation method. The approach involves estimating and compensating aspects of the spatially varying bistatic clutter response in both angle and Doppler prior to adaptive clutter suppression. An important feature of the proposed method is its ability to extract requisite implementation information from the data itself, rather than rely on ancillary—and possibly erroneous or missing-system measurements. We justify the essence of the proposed method by showing its ability to align the dominant clutter subspaces of each range realization relative to a suitably chosen reference point as a means of homogenizing the space-time data set. Moreover, we numerically characterize performance using synthetic bistatic clutter data. For the examples considered herein, the proposed bistatic STAP method leads to maximum performance improvements between 17.25 dB and 20.75 dB relative to traditional STAP application, with average improvements of 6 dB to 10 dB. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIGNAL detection KW - NOISE KW - DETECTION alarms KW - DOPPLER navigation KW - DATA KW - GEOMETRY KW - FUNCTIONAL analysis KW - BISTATIC radar N1 - Accession Number: 26675383; Melvin, William L. 1; Email Address: bill.melvin@gtri.gatech.edu Davis, Mark E. 2; Affiliation: 1: Georgia Tech Research Institute, Sensors & Electromagnetic Applications Lab, 7220 Richardson Rd., Smyrna, GA 30080 2: U.S. Air Force Research Laboratory, Sensors Directorate, 26 Electronic Parkway, Rome, NY 13441–4515; Source Info: Apr2007, Vol. 43 Issue 2, p651; Subject Term: SIGNAL detection; Subject Term: NOISE; Subject Term: DETECTION alarms; Subject Term: DOPPLER navigation; Subject Term: DATA; Subject Term: GEOMETRY; Subject Term: FUNCTIONAL analysis; Subject Term: BISTATIC radar; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; Number of Pages: 22p; Illustrations: 2 Black and White Photographs, 3 Diagrams, 2 Charts, 22 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26675383&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kyoung-Lae Noh AU - Chaudhari, Qasim Mahmood AU - Serpedin, Erchin AU - Suter, Bruce W. T1 - Novel Clock Phase Offset and Skew Estimation Using Two-Way Timing Message Exchanges for Wireless Sensor Networks. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2007/04// VL - 55 IS - 4 M3 - Article SP - 766 EP - 777 SN - 00906778 AB - Recently, a few efficient timing synchronization protocols for wireless sensor networks (WSNs) have been proposed with the goal of maximizing the accuracy and minimizing the power utilization. This paper proposes novel clock skew estimators assuming different delay environments to achieve energy-efficient network-wide synchronization for WSNs. The proposed clock skew correction mechanism significantly increases the re-synchronization period, which is a critical factor in reducing the overall power consumption. The proposed synchronization scheme can be applied to the conventional protocols without additional overheads. More-over, this paper derives the Cramer-Rao lower bounds and the maximum likelihood estimators under different delay models and assumptions. These analytical metrics serves as good benchmarks for the thus far reported experimental results. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYNCHRONIZATION KW - WIRELESS communication systems KW - ALGORITHMS KW - POWER resources KW - NUMERICAL analysis KW - MATHEMATICAL analysis KW - ELECTRICAL engineering KW - ELECTRONICS KW - Clock synchronization KW - timing-sync protocol for sensor networks (TPSN) KW - wireless sensor network (WSN) N1 - Accession Number: 24988553; Kyoung-Lae Noh 1; Email Address: abigbliss@tamu.edu Chaudhari, Qasim Mahmood 1; Email Address: qasimilyas@neo.tamu.edu Serpedin, Erchin 1; Email Address: serpedin@ece.tamu.edu Suter, Bruce W. 2; Email Address: Bruce.Suter@rl.af.mil; Affiliation: 1: Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX 77843-3128 USA 2: Air Force Research Laboratory, Rome NY 13441 USA; Source Info: Apr2007, Vol. 55 Issue 4, p766; Subject Term: SYNCHRONIZATION; Subject Term: WIRELESS communication systems; Subject Term: ALGORITHMS; Subject Term: POWER resources; Subject Term: NUMERICAL analysis; Subject Term: MATHEMATICAL analysis; Subject Term: ELECTRICAL engineering; Subject Term: ELECTRONICS; Author-Supplied Keyword: Clock synchronization; Author-Supplied Keyword: timing-sync protocol for sensor networks (TPSN); Author-Supplied Keyword: wireless sensor network (WSN); NAICS/Industry Codes: 541330 Engineering Services; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 12p; Illustrations: 4 Black and White Photographs, 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1109/TCOMM.2007.894102 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24988553&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - George, Kiran AU - Chen, Chien-In Henry AU - Tsui, James B. Y. T1 - Extension of Two-Signal Spurious-Free Dynamic Range of Wideband Digital Receivers Using Kaiser Window and Compensation Method. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques Y1 - 2007/04// VL - 55 IS - 4 M3 - Article SP - 788 EP - 794 SN - 00189480 AB - One of the most major trends in modern microwave signals is the shift toward wider bandwidths. Analog wideband receiver designs can provide accommodation of the technology-stressing bandwidths, but come up to a cost of reduced flexibility. Digital approaches, alternatively, provide flexibility in receiver signal processing, but they are limited by analog-to-digital converter resolution and power consumption. In this paper, design and implementation of a 1-GHz signal bandwidth digital receiver, which uses the Kaiser window function and compensation technique, is presented. The Kaiser window reduces the spectral leakage by eliminating the discontinuities at the time window edges and the compensation uncovers the weak signal for extension of the two-signal spurious-free dynamic range (SFDR) of the receiver. The combination of both techniques extends the two-signal SFDR of the receiver to 24 dB. A novel hardware implementation of the Kaiser window and the compensation method is presented. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIGITAL communications KW - MICROWAVES KW - BANDWIDTHS KW - DIGITAL electronics KW - ANALOG-to-digital converters KW - ELECTRONIC data processing KW - Compensation KW - digital receiver KW - false alarm KW - instantaneous frequency measurement (IFM) receiver KW - Kaiser window KW - microwave receiver KW - monobit receiver KW - normalization KW - receiver-on-a-chip (ROC) KW - spurious-free dynamic range (SFDR) KW - super-resolution N1 - Accession Number: 24880446; George, Kiran 1; Email Address: george.19@wright.edu Chen, Chien-In Henry 1; Email Address: henry.chen@wright.edu Tsui, James B. Y. 2; Affiliation: 1: Department of Electrical Engineering, Wright State University, Dayton, OH 45435 USA. 2: Reference and Receiver Applications Branch, Air Force Research Laboratory, Wright Patterson AFB, OH 45433 USA.; Source Info: Apr2007, Vol. 55 Issue 4, p788; Subject Term: DIGITAL communications; Subject Term: MICROWAVES; Subject Term: BANDWIDTHS; Subject Term: DIGITAL electronics; Subject Term: ANALOG-to-digital converters; Subject Term: ELECTRONIC data processing; Author-Supplied Keyword: Compensation; Author-Supplied Keyword: digital receiver; Author-Supplied Keyword: false alarm; Author-Supplied Keyword: instantaneous frequency measurement (IFM) receiver; Author-Supplied Keyword: Kaiser window; Author-Supplied Keyword: microwave receiver; Author-Supplied Keyword: monobit receiver; Author-Supplied Keyword: normalization; Author-Supplied Keyword: receiver-on-a-chip (ROC); Author-Supplied Keyword: spurious-free dynamic range (SFDR); Author-Supplied Keyword: super-resolution; NAICS/Industry Codes: 518210 Data Processing, Hosting, and Related Services; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TMTT.2007.892818 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24880446&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zelinski, G. M. AU - Thiele, G. A. AU - Hastriter, M. L. AU - Havrilla, M. J. AU - Terzuoli, A. J. T1 - Half width leaky wave antennas. JO - IET Microwaves, Antennas & Propagation JF - IET Microwaves, Antennas & Propagation Y1 - 2007/04// VL - 1 IS - 2 M3 - Article SP - 341 EP - 348 PB - Institution of Engineering & Technology SN - 17518725 AB - Leaky travelling wave antennas that use the first microstrip higher-order mode are analysed. The antennas investigated here are only half the width of previous leaky wave designs and utilise a structure that inherently suppresses the fundamental mode. Since mode purity is assured, the need for an elaborate feed structure is eliminated. A means for extracting the complex propagation constant of a leaky wave antenna is presented using the finite difference time domain (FDTD) method. Agreement is shown between the resulting propagation constant and another established theoretical method, the transverse resonance method. Representative measured far-field patterns are included, which are consistent with the computed propagation constants. The properties of curving the leaky wave structure are also studied. [ABSTRACT FROM AUTHOR] AB - Copyright of IET Microwaves, Antennas & Propagation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNAS (Electronics) KW - ELECTRONIC apparatus & appliances KW - STRIP transmission lines KW - MULTICONDUCTOR transmission lines KW - ELECTRIC lines N1 - Accession Number: 24789237; Zelinski, G. M. 1; Email Address: gregory.zelinskil@wpafb.af.mil Thiele, G. A. 2 Hastriter, M. L. 3 Havrilla, M. J. 3 Terzuoli, A. J. 3; Affiliation: 1: Air Force Research Laboratory (AFRL) Wright-Patterson AFB, OH 45433 2: Electrical and Computer Engineering Department, University of Dayton, Dayton OH 3: Department of Electrical and Computer Engineering, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433; Source Info: Apr2007, Vol. 1 Issue 2, p341; Subject Term: ANTENNAS (Electronics); Subject Term: ELECTRONIC apparatus & appliances; Subject Term: STRIP transmission lines; Subject Term: MULTICONDUCTOR transmission lines; Subject Term: ELECTRIC lines; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238910 Site Preparation Contractors; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; Number of Pages: 8p; Illustrations: 4 Diagrams, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1049/iet-map:20060011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24789237&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alsing, P.M. AU - Cardimona, D.A. AU - Huang, D.H. AU - Apostolova, T. AU - Glass, W.R. AU - Castillo, C.D. T1 - Advanced space-based detector research at the Air Force Research Laboratory JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2007/04// VL - 50 IS - 2/3 M3 - Article SP - 89 EP - 94 SN - 13504495 AB - Abstract: At the Space Vehicles Directorate of the Air Force Research Laboratory we are interested in the use of detectors in space for surveillance and situational awareness missions. Our primary interests are in observations of objects both on earth and in space, each of which has very different background requirements. In addition, the space environment itself is especially demanding of any sensor system that will be expected to work continuously for long periods of time in such a challenging environment. In this talk we will describe some of the requirements for operation in space (low temperatures, long distances, high radiation, etc.), and some of the research we have been performing to address these special issues. [Copyright &y& Elsevier] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE surveillance KW - EXTREME environments KW - OPTICAL instruments KW - Frequency agile detection KW - Optical cooling KW - Optical signal amplification KW - Single-pixel polarimeter KW - Space situational awareness KW - Space surveillance KW - AIR Force Research Laboratory (Edwards Air Force Base, Calif.) N1 - Accession Number: 24613489; Alsing, P.M.; Email Address: paul.alsing@kirtland.af.mil Cardimona, D.A. 1 Huang, D.H. 1 Apostolova, T. 1 Glass, W.R. 1 Castillo, C.D. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Ave., S.E., Kirtland AFB, NM 87117-5776, United States; Source Info: Apr2007, Vol. 50 Issue 2/3, p89; Subject Term: SPACE surveillance; Subject Term: EXTREME environments; Subject Term: OPTICAL instruments; Author-Supplied Keyword: Frequency agile detection; Author-Supplied Keyword: Optical cooling; Author-Supplied Keyword: Optical signal amplification; Author-Supplied Keyword: Single-pixel polarimeter; Author-Supplied Keyword: Space situational awareness; Author-Supplied Keyword: Space surveillance; Company/Entity: AIR Force Research Laboratory (Edwards Air Force Base, Calif.); NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 446130 Optical Goods Stores; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.infrared.2006.10.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24613489&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gunapala, S.D. AU - Bandara, S.V. AU - Liu, J.K. AU - Mumolo, J.M. AU - Hill, C.J. AU - Rafol, S.B. AU - Salazar, D. AU - Woolaway, J. AU - LeVan, P.D. AU - Tidrow, M.Z. T1 - Towards dualband megapixel QWIP focal plane arrays JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2007/04// VL - 50 IS - 2/3 M3 - Article SP - 217 EP - 226 SN - 13504495 AB - Abstract: Mid-wavelength infrared (MWIR) and long-wavelength infrared (LWIR) 1024×1024 pixel quantum well infrared photodetector (QWIP) focal planes have been demonstrated with excellent imaging performance. The MWIR QWIP detector array has demonstrated a noise equivalent differential temperature (NEΔT) of 17mK at a 95K operating temperature with f/2.5 optics at 300K background and the LWIR detector array has demonstrated a NEΔT of 13mK at a 70K operating temperature with the same optical and background conditions as the MWIR detector array after the subtraction of system noise. Both MWIR and LWIR focal planes have shown background limited performance (BLIP) at 90K and 70K operating temperatures respectively, with similar optical and background conditions. In addition, we have demonstrated MWIR and LWIR pixel co-registered simultaneously readable dualband QWIP focal plane arrays. In this paper, we will discuss the performance in terms of quantum efficiency, NEΔT, uniformity, operability, and modulation transfer functions of the 1024×1024 pixel arrays and the progress of dualband QWIP focal plane array development work. [Copyright &y& Elsevier] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFRARED detectors KW - INFRARED imaging KW - QUANTUM wells KW - INFRARED technology KW - Dualband KW - Focal plane arrays KW - Infrared detectors KW - Infrared imaging KW - Multi-band KW - Quantum wells KW - QWIP KW - Two-color N1 - Accession Number: 24613511; Gunapala, S.D. 1; Email Address: sarath.d.gunapala@jpl.nasa.gov Bandara, S.V. 1 Liu, J.K. 1 Mumolo, J.M. 1 Hill, C.J. 1 Rafol, S.B. 2 Salazar, D. 3 Woolaway, J. 3 LeVan, P.D. 4 Tidrow, M.Z. 5; Affiliation: 1: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA 2: Infravision Systems, 2400 Lincoln Avenue, Altadena, CA 91001, USA 3: FLIR Systems Inc., Indigo Operations, 70 Castilian Dr., Goleta, CA 93117, USA 4: Air Force Research Laboratory, Kirtland Air Force Base, NM 87117, USA 5: Missile Defense Agency/AS, 7100 Defense Pentagon, Washington, DC 20301, USA; Source Info: Apr2007, Vol. 50 Issue 2/3, p217; Subject Term: INFRARED detectors; Subject Term: INFRARED imaging; Subject Term: QUANTUM wells; Subject Term: INFRARED technology; Author-Supplied Keyword: Dualband; Author-Supplied Keyword: Focal plane arrays; Author-Supplied Keyword: Infrared detectors; Author-Supplied Keyword: Infrared imaging; Author-Supplied Keyword: Multi-band; Author-Supplied Keyword: Quantum wells; Author-Supplied Keyword: QWIP; Author-Supplied Keyword: Two-color; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.infrared.2006.10.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24613511&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vandawaker, Robert M. AU - Palazotto, Anthony N. AU - Cobb, Richard G. T1 - Damage Detection through Analysis of Modes in a Partially Constrained Plate. JO - Journal of Aerospace Engineering JF - Journal of Aerospace Engineering Y1 - 2007/04// VL - 20 IS - 2 M3 - Article SP - 90 EP - 96 PB - American Society of Civil Engineers SN - 08931321 AB - The need for aircraft, both military and civilian, to serve longer and cost less to operate is ever present. The ability to potentially extend service life and reduce operating and maintenance costs are key factors in the many choices with aircraft programs. The field of structural health monitoring attempts to reduce labor and cost by allowing technicians to monitor selected properties of an aircraft’s structure to detect impending failure. This research examines methods to detect damage to a thermal protection system tile using representative aluminum plates. Plates are subjected to modal analysis in single and joined conditions in an attempt to provide the capability of sensing damage to a tile on the surface of a vehicle whereas the sensors remain on the substructure of the airframe. Jointly, the development of a means to model the system using finite-element techniques is explored. It is found that the finite-element modeling technique produces correlating modal frequencies within a 7.19% worst case average when compared to the physical tests. This leads to the ability to compare mode shapes and frequencies to detect damage in such a system. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerospace Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES -- Maintenance & repair KW - MILITARY airplanes -- Maintenance & repair KW - OPERATING costs KW - SERVICE life (Engineering) KW - FINITE element method KW - AEROSPACE engineering KW - Damage KW - Modal analysis KW - Monitoring KW - Plates N1 - Accession Number: 24385350; Vandawaker, Robert M. 1 Palazotto, Anthony N. 2 Cobb, Richard G. 3; Affiliation: 1: Aerospace Structural Health Engineer, Air Force Research Laboratory/Air Vehicles Directorate, Wright-Patterson AFB, OH 45433 2: Professor of Aerospace Engineering, Dept. of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433 3: Assistant Professor of Aerospace Engineering, Dept. of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433; Source Info: Apr2007, Vol. 20 Issue 2, p90; Subject Term: AIRPLANES -- Maintenance & repair; Subject Term: MILITARY airplanes -- Maintenance & repair; Subject Term: OPERATING costs; Subject Term: SERVICE life (Engineering); Subject Term: FINITE element method; Subject Term: AEROSPACE engineering; Author-Supplied Keyword: Damage; Author-Supplied Keyword: Modal analysis; Author-Supplied Keyword: Monitoring; Author-Supplied Keyword: Plates; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 488190 Other Support Activities for Air Transportation; NAICS/Industry Codes: 336411 Aircraft Manufacturing; Number of Pages: 7p; Illustrations: 3 Black and White Photographs, 2 Diagrams, 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1061/(ASCE)0893-1321(2007)20:2(90) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24385350&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cerutti, L. AU - Boissier, G. AU - Grech, P. AU - Perona, A. AU - Angellier, J. AU - Rouillard, Y. AU - Tournié, E. AU - Genty, F. AU - Dente, G.C. AU - Kaspi, R. T1 - Growth and characterization of GaInSb/GaInAsSb hole-well laser diodes emitting near 2.93μm JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2007/04// VL - 301-302 M3 - Article SP - 967 EP - 970 SN - 00220248 AB - Abstract: The growth by molecular-beam epitaxy of novel electrically pumped type-II multi-quantum well (MQW) Sb-based laser diodes in which only the holes are quantum confined was studied. These laser structures were fabricated on (001) GaSb substrates. In the MQW region, radiative recombinations originate from InGaSb hole wells embedded in InGaAsSb barriers lattice matched to GaSb. Two different laser structures were developed. The first one exhibited a well/barrier periodicity that was too short, which led to a laser emission near 2.65μm originating from the waveguide rather than from the wells. With an improved well/barrier periodicity, the second structure exhibited laser emission up to 243K at 2.93μm in the pulsed regime (200ns, 5kHz). In this case, the laser photons were effectively produced by the hole-well active region. A minimum threshold of about 12.8kA/cm2 at 80K combined with a T 0 around 70K have been measured from this second structure. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR diodes KW - MOLECULAR beam epitaxy KW - SEMICONDUCTORS KW - QUANTUM wells KW - 42.55.Px KW - A3. Molecular beam epitaxy KW - B1. Antimonides KW - B2. Semiconducting III–V materials KW - B3. Mid-infrared devices KW - B3. Quantum well laser diodes N1 - Accession Number: 24470231; Cerutti, L. 1 Boissier, G. 1 Grech, P. 1 Perona, A. 1 Angellier, J. 1 Rouillard, Y. 1 Tournié, E. 1 Genty, F. 1; Email Address: genty@univ-montp2.fr Dente, G.C. 2 Kaspi, R. 2; Affiliation: 1: Centre d’Electronique et de Microoptoélectronique de Montpellier, UMR CNRS 5507, CC67, Université Montpellier 2, 34095 Montpellier, France 2: Air Force Research Laboratory, AFRL/DELS, Albuquerque, NM, 87111 USA; Source Info: Apr2007, Vol. 301-302, p967; Subject Term: SEMICONDUCTOR diodes; Subject Term: MOLECULAR beam epitaxy; Subject Term: SEMICONDUCTORS; Subject Term: QUANTUM wells; Author-Supplied Keyword: 42.55.Px; Author-Supplied Keyword: A3. Molecular beam epitaxy; Author-Supplied Keyword: B1. Antimonides; Author-Supplied Keyword: B2. Semiconducting III–V materials; Author-Supplied Keyword: B3. Mid-infrared devices; Author-Supplied Keyword: B3. Quantum well laser diodes; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jcrysgro.2006.11.057 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24470231&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Leedy, Kevin D. AU - Strawser, Richard E. AU - Cortez, Rebecca AU - Ebel, John L. T1 - Thin-Film Encapsulated RF MEMS Switches. JO - Journal of Microelectromechanical Systems JF - Journal of Microelectromechanical Systems Y1 - 2007/04// VL - 16 IS - 2 M3 - Article SP - 304 EP - 309 SN - 10577157 AB - A wafer-level thin-film encapsulation process has been demonstrated to package radio-frequency (RF) microelectromechanical systems (MEMS) switches in this paper. Individual shunt capacitive switches were packaged in a ~ 1 nL inorganic enclosure with process temperatures not exceeding 300 °C. A shell covering the switch consisted of 10 nm of sputtered alumina and 1.67 µm of sputtered silicon nitride dielectric film. The switch and dielectric shell were simultaneously wet-released through access channels in the shell. Following release, access channels were sealed with 10 nm of sputtered alumina and 2-4 µm of either plasma-enhanced chemical vapor deposited silicon dioxide or silicon nitride. Electromagnetic simulation and RF test results before and after sealing show minimal RF degradation of switch performance. Before sealing, the insertion loss and isolation at 10 GHz averaged 0.12 and 10.7 dB, respectively. After sealing, the same devices had an average insertion loss and isolation of 0.12 and 10.1 dB, respectively. Complete characterization of the package atmosphere was not completed due to challenges in assessing nanoliter-scale volumes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microelectromechanical Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO frequency KW - MICROELECTROMECHANICAL systems KW - THIN films KW - SILICON nitride KW - SILICA KW - MECHATRONICS KW - Dielectric films KW - encapsulation KW - microelectromechanical devices KW - switches N1 - Accession Number: 25108692; Leedy, Kevin D. 1; Email Address: kevin.leedy@wpafb.af.mil Strawser, Richard E. 1 Cortez, Rebecca 1 Ebel, John L. 1; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433 USA; Source Info: Apr2007, Vol. 16 Issue 2, p304; Subject Term: RADIO frequency; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: THIN films; Subject Term: SILICON nitride; Subject Term: SILICA; Subject Term: MECHATRONICS; Author-Supplied Keyword: Dielectric films; Author-Supplied Keyword: encapsulation; Author-Supplied Keyword: microelectromechanical devices; Author-Supplied Keyword: switches; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 212322 Industrial Sand Mining; Number of Pages: 6p; Illustrations: 6 Diagrams, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1109/JMEMS.2007.892915 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25108692&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rate, Christopher R. AU - Clarke, Jennifer A. AU - Lindsay, Douglas R. AU - Sternberg, Robert J. T1 - Implicit theories of courage. JO - Journal of Positive Psychology JF - Journal of Positive Psychology Y1 - 2007/04// VL - 2 IS - 2 M3 - Article SP - 80 EP - 98 SN - 17439760 AB - What is courage? This question garners significant interest and attention but little empirical research. An operational definition of courage is essential to good research, yet no consensus definition has fully emerged. This article systematically investigates people's conceptions of courage and courageous behavior through a series of studies employing well-grounded implicit methodologies. The organizational structure and components of courage are investigated using a response-generating task (Study 1) and alternate methods (Studies 2 and 3), followed by an experimental approach to determine if people actually use their implicit theories in their evaluations of others (Study 4). Collectively, these studies reveal an organizational structure of people's implicit theories of courage. Further, they indicate that people apply their implicit theories accurately in evaluating others. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Positive Psychology is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COURAGE KW - HELPING behavior KW - HUMAN behavior KW - ALTRUISM KW - PSYCHOLOGY -- Research KW - EXPERIMENTAL psychology KW - Courage KW - courageous behavior KW - implicit theories KW - prototypes N1 - Accession Number: 24756521; Rate, Christopher R. 1 Clarke, Jennifer A. 2 Lindsay, Douglas R. 3 Sternberg, Robert J. 4; Affiliation: 1: Yale University. USA 2: United States Air Force Academy. USA 3: Pennsylvania State University. USA 4: Tufts University. USA; Source Info: Apr2007, Vol. 2 Issue 2, p80; Subject Term: COURAGE; Subject Term: HELPING behavior; Subject Term: HUMAN behavior; Subject Term: ALTRUISM; Subject Term: PSYCHOLOGY -- Research; Subject Term: EXPERIMENTAL psychology; Author-Supplied Keyword: Courage; Author-Supplied Keyword: courageous behavior; Author-Supplied Keyword: implicit theories; Author-Supplied Keyword: prototypes; NAICS/Industry Codes: 541720 Research and Development in the Social Sciences and Humanities; Number of Pages: 19p; Illustrations: 1 Diagram, 5 Charts; Document Type: Article L3 - 10.1080/17439760701228755 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24756521&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kahler, S. T1 - Solar Sources of Heliospheric Energetic Electron Events—Shocks or Flares? JO - Space Science Reviews JF - Space Science Reviews Y1 - 2007/04// VL - 129 IS - 4 M3 - Article SP - 359 EP - 390 PB - Springer Science & Business Media B.V. SN - 00386308 AB - Electrons with near-relativistic ( E≳30 keV, NrR) and relativistic ( E≳0.3 MeV) energies are often observed as discrete events in the inner heliosphere following solar transient activity. Several acceleration mechanisms have been proposed for the production of those electrons. One candidate is acceleration at MHD shocks driven by coronal mass ejections (CMEs) with speeds ≳1000 km s−1. Many NrR electron events are temporally associated only with flares while others are associated with flares as well as with CMEs or with radio type II shock waves. Since CME onsets and associated flares are roughly simultaneous, distinguishing the sources of electron events is a serious challenge. On a phenomenological basis two classes of solar electron events were known several decades ago, but recent observations have presented a more complex picture. We review early and recent observational results to deduce different electron event classes and their viable acceleration mechanisms, defined broadly as shocks versus flares. The NrR and relativistic electrons are treated separately. Topics covered are: solar electron injection delays from flare impulsive phases; comparisons of electron intensities and spectra with flares, CMEs and accompanying solar energetic proton (SEP) events; multiple spacecraft observations; two-phase electron events; coronal flares; shock-associated (SA) events; electron spectral invariance; and solar electron intensity size distributions. This evidence suggests that CME-driven shocks are statistically the dominant acceleration mechanism of relativistic events, but most NrR electron events result from flares. Determining the solar origin of a given NrR or relativistic electron event remains a difficult proposition, and suggestions for future work are given. [ABSTRACT FROM AUTHOR] AB - Copyright of Space Science Reviews is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - SOLAR activity KW - PROTONS KW - HELIOSPHERE (Astrophysics) KW - PARTICLES (Nuclear physics) KW - SPECTRUM analysis KW - Acceleration of particles KW - Interplanetary medium KW - Sun: coronal mass ejections KW - Sun: particle emission KW - Sun: radio radiation N1 - Accession Number: 26275401; Kahler, S. 1; Email Address: stephen.kahler@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, VSBXS , 29 Randolph Rd. Hanscom AFB 01731-3010 USA; Source Info: Apr2007, Vol. 129 Issue 4, p359; Subject Term: ELECTRONS; Subject Term: SOLAR activity; Subject Term: PROTONS; Subject Term: HELIOSPHERE (Astrophysics); Subject Term: PARTICLES (Nuclear physics); Subject Term: SPECTRUM analysis; Author-Supplied Keyword: Acceleration of particles; Author-Supplied Keyword: Interplanetary medium; Author-Supplied Keyword: Sun: coronal mass ejections; Author-Supplied Keyword: Sun: particle emission; Author-Supplied Keyword: Sun: radio radiation; Number of Pages: 32p; Illustrations: 19 Graphs; Document Type: Article L3 - 10.1007/s11214-007-9143-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26275401&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhu, K. AU - Johnstone, D. AU - Leach, J. AU - Fu, Y. AU - Morkoç, H. AU - Li, G. AU - Ganguly, B. T1 - High power photoconductive switches of 4H SiC with Si3N4 passivation and n+ -GaN subcontact JO - Superlattices & Microstructures JF - Superlattices & Microstructures Y1 - 2007/04// VL - 41 IS - 4 M3 - Article SP - 264 EP - 270 SN - 07496036 AB - Abstract: The effect of a Si3N4 passivation layer on the breakdown voltage in 4H SiC high power photoconductive semiconductor switching devices has been investigated. An n+-GaN epitaxial layer was also used for these devices as a subcontact layer, which was between the contact metal and the high resistivity SiC bulk, to improve the ohmic contact and mitigate current spreading: the GaN subcontact layer protects the contact from damage occurring at high power levels. The Si3N4 passivation layer was grown by ultrahigh vacuum plasma enhanced chemical vapor deposition. By using the Si3N4 passivation, the dark leakage current of the devices was suppressed effectively and decreased by one order of magnitude, and the breakdown voltage of the switching devices was improved significantly from 2.9 to 5 kV without degrading the high photocurrent. [Copyright &y& Elsevier] AB - Copyright of Superlattices & Microstructures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTORS -- Analysis KW - SEMICONDUCTOR switches KW - BREAKDOWN voltage KW - CHEMICAL vapor deposition N1 - Accession Number: 25182684; Zhu, K. 1 Johnstone, D. 1 Leach, J. 1 Fu, Y. 1 Morkoç, H. 1; Email Address: hmorkoc@vcu.edu Li, G. 2 Ganguly, B. 3; Affiliation: 1: Department of Electrical Engineering, Virginia Commonwealth University, 601 W. Main Street, Richmond, VA 23284, United States 2: Department of Engineering Physics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433, United States 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, United States; Source Info: Apr2007, Vol. 41 Issue 4, p264; Subject Term: SEMICONDUCTORS -- Analysis; Subject Term: SEMICONDUCTOR switches; Subject Term: BREAKDOWN voltage; Subject Term: CHEMICAL vapor deposition; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.spmi.2007.02.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25182684&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Herrmann, Cari F. AU - DelRio, Frank W. AU - Miller, David C. AU - George, Steven M. AU - Bright, Victor M. AU - Ebel, Jack L. AU - Strawser, Richard E. AU - Cortez, Rebecca AU - Leedy, Kevin D. T1 - Alternative dielectric films for rf MEMS capacitive switches deposited using atomic layer deposited Al2O3/ZnO alloys JO - Sensors & Actuators A: Physical JF - Sensors & Actuators A: Physical Y1 - 2007/03/30/ VL - 135 IS - 1 M3 - Article SP - 262 EP - 272 SN - 09244247 AB - Abstract: Atomic layer deposition (ALD) was used to deposit an alternative dielectric barrier layer for use in radio frequency microelectromechanical systems (rf MEMS). The layer is an alloy mixture of Al2O3 and ZnO and is proposed for use as charge dissipative layers in which the dielectric constant is significant enough to provide a large down-state capacitance while the resistivity is sufficiently low to promote the dissipation of trapped charges. This paper investigates Al2O3/ZnO ALD alloys deposited at 100 and 177°C and compares their material properties. Auger electron spectroscopy was used to determine the Zn concentrations in the alloy films, which was lower than expected. Atomic force microscopy images revealed an average surface roughness of 0.27nm that was independent of deposition temperature and film composition. The dielectric constants of the Al2O3/ZnO ALD alloys films were calculated to be similar to pure Al2O3 ALD, being ∼7. Indentation was used to ascertain the modulus and hardness of the ALD films. Both the modulus and hardness were found to increase for the greater deposition temperature. ALD-coated rf MEMS switches showed a low insertion loss, ∼0.35dB, and a high isolation, 55dB at 14GHz. Mechanical actuation of the ALD-coated devices showed lifetimes of over 1 billion cycles. [Copyright &y& Elsevier] AB - Copyright of Sensors & Actuators A: Physical is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRIC films KW - ELECTRIC insulators & insulation -- Thin films KW - THIN films KW - MICROELECTROMECHANICAL systems KW - Atomic layer deposition KW - Capacitive shunt switch KW - Dielectric layer KW - rf MEMS N1 - Accession Number: 24459956; Herrmann, Cari F. 1,2 DelRio, Frank W. 1 Miller, David C. 1 George, Steven M. 2,3 Bright, Victor M. 1; Email Address: victor.bright@colorado.edu Ebel, Jack L. 4 Strawser, Richard E. 4 Cortez, Rebecca 4 Leedy, Kevin D. 4; Affiliation: 1: University of Colorado, Department of Mechanical Engineering, Boulder, CO 80309, USA 2: University of Colorado, Department of Chemistry and Biochemistry, Boulder, CO 80309, USA 3: University of Colorado, Department of Chemical and Biological Engineering, Boulder, CO 80309, USA 4: Sensors Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA; Source Info: Mar2007, Vol. 135 Issue 1, p262; Subject Term: DIELECTRIC films; Subject Term: ELECTRIC insulators & insulation -- Thin films; Subject Term: THIN films; Subject Term: MICROELECTROMECHANICAL systems; Author-Supplied Keyword: Atomic layer deposition; Author-Supplied Keyword: Capacitive shunt switch; Author-Supplied Keyword: Dielectric layer; Author-Supplied Keyword: rf MEMS; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.sna.2006.07.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24459956&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Levashov, E.A. AU - Vakaev, P.V. AU - Zamulaeva, E.I. AU - Kudryashov, A.E. AU - Kurbatkina, V.V. AU - Shtansky, D.V. AU - Voevodin, A.A. AU - Sanz, A. T1 - Disperse-strengthening by nanoparticles advanced tribological coatings and electrode materials for their deposition JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2007/03/26/ VL - 201 IS - 13 M3 - Article SP - 6176 EP - 6181 SN - 02578972 AB - Abstract: Two types of electrode materials were developed using self-propagating high-temperature synthesis (SHS) and powder metallurgy: 1- composite with nanosized additives; 2- nanostructured cemented carbide WC–Co. Electrospark deposition (ESD) was applied to produce tribological coatings which were disperse-strengthened by incorporation of nanosized particles. Nanostructured electrodes of cemented carbides WC–8% Co provide increasing density, thickness, hardness, Young''s modulus, and wear resistance of ESD-coatings. Positive effects of nanostructural state of the electrodes on the deposition process and structure/properties of the coatings are discussed. In that case the tungsten carbide phase becomes predominant in the coatings. A mechanism of the dissolution reaction of WC in Ni at the contact surface of the electrode was proposed. It was shown that formation of the coating structure is initiated on the electrode and accomplished on the substrate. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRODES KW - SELF-propagating high-temperature synthesis KW - POWDER metallurgy KW - NANOSTRUCTURES KW - Coating KW - Electrospark deposition (ESD) KW - Microstructure KW - Nanosized additives KW - WC–Co nanostructured electrodes N1 - Accession Number: 23946295; Levashov, E.A. 1; Email Address: levashov@shs.misis.ru Vakaev, P.V. 1 Zamulaeva, E.I. 1 Kudryashov, A.E. 1 Kurbatkina, V.V. 1 Shtansky, D.V. 1 Voevodin, A.A. 2 Sanz, A. 3; Affiliation: 1: Moscow State Institute of Steel and Alloys, Leninsky pr., 4, Moscow 119049, Russia 2: Air Force Research Laboratory, 2941 Hobson Way, Wright Patterson AFB, OH 45433, United States 3: SKF Engineering & Research Centre, P.O. box 2350 Kelvinbaan 16, 3430 DT Nieuwegein, 3439 MT Nieuwegein, The Netherlands; Source Info: Mar2007, Vol. 201 Issue 13, p6176; Subject Term: ELECTRODES; Subject Term: SELF-propagating high-temperature synthesis; Subject Term: POWDER metallurgy; Subject Term: NANOSTRUCTURES; Author-Supplied Keyword: Coating; Author-Supplied Keyword: Electrospark deposition (ESD); Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Nanosized additives; Author-Supplied Keyword: WC–Co nanostructured electrodes; NAICS/Industry Codes: 332117 Powder Metallurgy Part Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.surfcoat.2006.08.134 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23946295&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Knopp, Jeremy S. T1 - Case Study for New Feature Extraction Algorithms, Automated Data Classification, and Model-Assisted Probability of Detection Evaluation. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/03/21/ VL - 894 IS - 1 M3 - Article SP - 257 EP - 264 PB - American Institute of Physics SN - 0094243X AB - This paper explores feature extraction algorithms for crack characterization in eddy current inspection of fastener sites. A novel feature extraction method fitting approximate models to data associated with geometric part features addressing adjacent fastener sites and panel edges is developed. Data classification methods in the circumferential direction around fastener sites are developed to better characterize fatigue cracks with improved noise invariance. Model-assisted probability of detection results are presented highlighting the benefit of automation in NDE. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRACTURE mechanics KW - ALGORITHMS KW - FASTENERS KW - GEOMETRY KW - DETECTORS KW - PHYSICAL sciences KW - Eddy Current KW - Fastener Sites KW - Feature Extraction KW - Models KW - Probability of Detection (POD) N1 - Accession Number: 24505371; Aldrin, John C. 1 Knopp, Jeremy S. 2; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA. 2: Air Force Research Laboratory (AFRL/MLLP), Wright-Patterson AFB, OH 45433, USA.; Source Info: 2007, Vol. 894 Issue 1, p257; Subject Term: FRACTURE mechanics; Subject Term: ALGORITHMS; Subject Term: FASTENERS; Subject Term: GEOMETRY; Subject Term: DETECTORS; Subject Term: PHYSICAL sciences; Author-Supplied Keyword: Eddy Current; Author-Supplied Keyword: Fastener Sites; Author-Supplied Keyword: Feature Extraction; Author-Supplied Keyword: Models; Author-Supplied Keyword: Probability of Detection (POD); NAICS/Industry Codes: 332722 Bolt, Nut, Screw, Rivet, and Washer Manufacturing; NAICS/Industry Codes: 339990 All other miscellaneous manufacturing; NAICS/Industry Codes: 339993 Fastener, Button, Needle, and Pin Manufacturing; NAICS/Industry Codes: 416330 Hardware merchant wholesalers; NAICS/Industry Codes: 423710 Hardware Merchant Wholesalers; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.2717981 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24505371&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ko, Ray T. AU - Sathish, Shamachary AU - Knopp, Jeremy S. AU - Blodgett, Mark P. T1 - Hidden Crack Detection with GMR Sensing of Magnetic Fields from Eddy Currents. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/03/21/ VL - 894 IS - 1 M3 - Article SP - 273 EP - 280 PB - American Institute of Physics SN - 0094243X AB - A giant magneto-resistive (GMR) sensor placed inside a coil has been used for same side eddy current measurements on metallic plates. Magnetic fields from eddy currents generated in these metallic plates by excitation of the coil, are detected by the GMR sensor. The signal excitation and detection is accomplished using a lock-in amplifier which allows independent measurement of the phase and magnitude. The sensor configuration has been used to detect notches. Phase and magnitude images acquired with this sensor configuration are compared with the images obtained using the coil only. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GENERALIZED minimal residual method KW - MAGNETIC fields KW - DETECTORS KW - EDDY currents (Electric) KW - ELECTRIC currents KW - ELECTROMAGNETISM KW - Eddy Currents KW - Fastener Hole KW - GMR Sensor KW - Hidden Crack Detection N1 - Accession Number: 24505369; Ko, Ray T. 1 Sathish, Shamachary 1 Knopp, Jeremy S. 2 Blodgett, Mark P. 2; Affiliation: 1: Structural Integrity Division, University of Dayton Research Institute, 300 College Park Drive, Dayton, Ohio 45469-0120. 2: Metals, Ceramics, and NDE Division, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433.; Source Info: 2007, Vol. 894 Issue 1, p273; Subject Term: GENERALIZED minimal residual method; Subject Term: MAGNETIC fields; Subject Term: DETECTORS; Subject Term: EDDY currents (Electric); Subject Term: ELECTRIC currents; Subject Term: ELECTROMAGNETISM; Author-Supplied Keyword: Eddy Currents; Author-Supplied Keyword: Fastener Hole; Author-Supplied Keyword: GMR Sensor; Author-Supplied Keyword: Hidden Crack Detection; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.2717983 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24505369&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gupta, K. AU - Ghasr, M. T. AU - Kharkovsky, S. AU - Zoughi, R. AU - Stanley, R. J. AU - Padwal, A. AU - O'Keefe, M. AU - Palmer, D. AU - Blackshire, J. AU - Steffes, G. AU - Wood, N. T1 - Fusion of Microwave and Eddy Current Data for a Multi-Modal Approach in Evaluating Corrosion Under Paint and in Lap Joints. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/03/21/ VL - 894 IS - 1 M3 - Article SP - 611 EP - 618 PB - American Institute of Physics SN - 0094243X AB - Critical aircraft structures are susceptible to hidden corrosion. Find-it and fix-it approaches are inefficient as it relates to managing the problems associated with corrosion. More comprehensive corrosion information may be obtained using data fusion from several detection and evaluation methods. To this end, microwave, conventional and pulsed eddy current data from a multi-layer corroded panel, representing an aircraft lap joint, are fused and used as inputs to a structural analysis model to obtain a comprehensive snapshot of the corroded environment. This paper presents the data fusion algorithm and the structural analysis model along with a discussion of the results. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTISENSOR data fusion KW - PHYSICAL & theoretical chemistry KW - LATTICE theory KW - CORROSION & anti-corrosives KW - TECHNICAL chemistry KW - STRUCTURAL engineering KW - Corrosion KW - Data Fusion KW - Eddy Current KW - Microwaves KW - Nondestructive Evaluation KW - Structural Analysis. N1 - Accession Number: 24505325; Gupta, K. 1 Ghasr, M. T. 1 Kharkovsky, S. 1 Zoughi, R. 1 Stanley, R. J. 1 Padwal, A. 2 O'Keefe, M. 2 Palmer, D. 3 Blackshire, J. 4 Steffes, G. 4 Wood, N. 3; Affiliation: 1: Electrical and Computer Engineering Department, University of Missouri-Rolla, Rolla, MO 65409. 2: Department of Material Science and Engineering, University of Missouri-Rolla, Rolla, MO 65409. 3: Boeing Company, Boeing Phantom Works, St. Louis, MO 63166. 4: Air Force Research Laboratory (AFRL), Wright Patterson, OH 45433.; Source Info: 2007, Vol. 894 Issue 1, p611; Subject Term: MULTISENSOR data fusion; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: LATTICE theory; Subject Term: CORROSION & anti-corrosives; Subject Term: TECHNICAL chemistry; Subject Term: STRUCTURAL engineering; Author-Supplied Keyword: Corrosion; Author-Supplied Keyword: Data Fusion; Author-Supplied Keyword: Eddy Current; Author-Supplied Keyword: Microwaves; Author-Supplied Keyword: Nondestructive Evaluation; Author-Supplied Keyword: Structural Analysis.; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.2718027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24505325&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abou-Khousa, M. A. AU - Ryley, A. AU - Kharkovsky, S. AU - Zoughi, R. AU - Daniels, D. AU - Kreitinger, N. AU - Steffes, G. T1 - Comparison of X-Ray, Millimeter Wave, Shearography and Through-Transmission Ultrasonic Methods for Inspection of Honeycomb Composites. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/03/21/ VL - 894 IS - 1 M3 - Article SP - 999 EP - 1006 PB - American Institute of Physics SN - 0094243X AB - Honeycomb composites are increasingly finding utility in a variety of environments and applications, such as aircraft structural components, flight control components, radomes, etc. In-service and environmental stresses can produce unwanted flaws that adversely affect the structural integrity and functionality of these composites. These flaws may be in the forms of disbonds, delaminations, impact damage, crushed honeycomb, moisture intrusion, internal cracks, etc. There are several nondestructive testing (NDT) methods that may be used to inspect these composites for the presence and evaluation of these flaws. Such NDT methods include X-ray computed tomography, near-field millimeter wave, shearography, and ultrasonic testing. To assess the capabilities of these methods for honeycomb composite inspection, two honeycomb composites panels were produced with several embedded flaws and missing material primarily representing planar disbonds at various levels within the thickness of the panels and with different shapes. Subsequently, the aforementioned NDT methods were used to produce images of the two panels. This paper presents the results of these investigations and a comparison among the capabilities of these methods. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HONEYCOMBS KW - AIRFRAMES KW - FLIGHT control KW - RADOMES KW - ENVIRONMENTAL engineering KW - TOMOGRAPHY KW - Honeycomb Composite KW - Millimeter Wave KW - Nondestructive Testing (NDT) KW - Shearography KW - Through-transmission Ultrasound KW - X-ray Computed Tomography. N1 - Accession Number: 24505522; Abou-Khousa, M. A. 1 Ryley, A. 1 Kharkovsky, S. 1 Zoughi, R. 1 Daniels, D. 2 Kreitinger, N. 2 Steffes, G. 2; Affiliation: 1: Applied Microwave Nondestructive Testing Laboratory (amntl), Electrical and Computer Engineering Department, University of Missouri-Rolla, Rolla, MO 65409. 2: Air Force Research Laboratory (AFRL), Materials and Manufacturing Directorate, 2230 Tenth Street, Ste. 1, Wright-Patterson AFB, OH 45433-7817.; Source Info: 2007, Vol. 894 Issue 1, p999; Subject Term: HONEYCOMBS; Subject Term: AIRFRAMES; Subject Term: FLIGHT control; Subject Term: RADOMES; Subject Term: ENVIRONMENTAL engineering; Subject Term: TOMOGRAPHY; Author-Supplied Keyword: Honeycomb Composite; Author-Supplied Keyword: Millimeter Wave; Author-Supplied Keyword: Nondestructive Testing (NDT); Author-Supplied Keyword: Shearography; Author-Supplied Keyword: Through-transmission Ultrasound; Author-Supplied Keyword: X-ray Computed Tomography.; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.2718076 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24505522&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Welter, J. AU - Sathish, S. AU - Ripberger, E. AU - Lindgren, E. T1 - Thermo-Elastic Nondestructive Evaluation of Thermally Induced Damage in Polymer Matrix Composites. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/03/21/ VL - 894 IS - 1 M3 - Article SP - 1052 EP - 1056 PB - American Institute of Physics SN - 0094243X AB - Destructive measurements of overheated Polymer Matrix Composites (PMCs) show that mechanical strength can be reduced by as much as 10–80 percent before appearance of visible damage. A large majority of the NDE techniques cannot detect this incipient heat damage. Thermo-elastic measurements are compared with ultrasonic C-scans and destructive flexural test measurements performed on PMCs subjected to uniform heat damage. These measurements confirm that ultrasonic C-scan measurements cannot detect incipient heat damage that can be detected by the thermo-elastic parameter measurements. A gradual decrease in the thermo-elastic parameter was determined as a function of increasing incipient heat damage. The possible mechanisms responsible for the change in this parameter due to thermal damage are discussed. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MECHANICAL ability KW - HEAT KW - DAMAGES (Law) KW - ULTRASONIC imaging KW - POLYMERS KW - PHYSICAL sciences KW - Composites KW - Heat Damage KW - NDE KW - Nondestructive Evaluation KW - Ultrasonics N1 - Accession Number: 24505515; Welter, J. 1 Sathish, S. 2 Ripberger, E. 3 Lindgren, E. 1; Affiliation: 1: Petals, Ceramics and NDE Division, Air Force Research Laboratory Wright-Patterson Air Force Base, OH 45433-7817. 2: Structural Integrity Division, University of Dayton Research Institute, Dayton, OH 45469-0127. 3: System Support Division, Air Force Research Laboratory Wright-Patterson Air Force Base, OH 45433-7817.; Source Info: 2007, Vol. 894 Issue 1, p1052; Subject Term: MECHANICAL ability; Subject Term: HEAT; Subject Term: DAMAGES (Law); Subject Term: ULTRASONIC imaging; Subject Term: POLYMERS; Subject Term: PHYSICAL sciences; Author-Supplied Keyword: Composites; Author-Supplied Keyword: Heat Damage; Author-Supplied Keyword: NDE; Author-Supplied Keyword: Nondestructive Evaluation; Author-Supplied Keyword: Ultrasonics; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 5p; Document Type: Article L3 - 10.1063/1.2718083 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24505515&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sathish, Shamachary AU - Jata, Kumar V. AU - Martin, Richard W. AU - Reibel, Richard T1 - Focused Acoustic Beam Evaluation of Aluminum — Lithium Friction Stir Weld. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/03/21/ VL - 894 IS - 1 M3 - Article SP - 1095 EP - 1102 PB - American Institute of Physics SN - 0094243X AB - Local elastic variations were measured across a friction stir welded zone in Al-Li alloy with the use of a focused acoustic beam. The near surface microstructure was investigated by measuring both the amplitude and the local velocity of the Rayleigh Surface Waves (RSW). Both the amplitude and velocity of the focused longitudinal acoustic waves propagating through the thickness of the sample has been used for examination of the variations in the localized bulk elastic properties. The variations observed across the weld zone are explained based on microstructure and residual stress variations. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRICTION KW - WELDED joints KW - FORGING KW - MICROMECHANICS KW - ELASTICITY KW - MICROSTRUCTURE KW - RESIDUAL stresses KW - Elastic Properties KW - Focused Acoustic Beam KW - Friction Stir Welding N1 - Accession Number: 24505509; Sathish, Shamachary 1 Jata, Kumar V. 2 Martin, Richard W. 1 Reibel, Richard 1; Affiliation: 1: Air Force Research Laboratory, Metals, Ceramics and NDE Division, 2230 Tenth St., Wright Patterson AFB, Dayton, OH 45433-7817. 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0127.; Source Info: 2007, Vol. 894 Issue 1, p1095; Subject Term: FRICTION; Subject Term: WELDED joints; Subject Term: FORGING; Subject Term: MICROMECHANICS; Subject Term: ELASTICITY; Subject Term: MICROSTRUCTURE; Subject Term: RESIDUAL stresses; Author-Supplied Keyword: Elastic Properties; Author-Supplied Keyword: Focused Acoustic Beam; Author-Supplied Keyword: Friction Stir Welding; NAICS/Industry Codes: 332112 Nonferrous Forging; NAICS/Industry Codes: 332111 Iron and Steel Forging; NAICS/Industry Codes: 332113 Forging; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.2718089 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24505509&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ryley, A. C. AU - Ghasr, M. T. AU - Kharkovsky, S. AU - Zoughi, R. AU - Steffes, Gary T1 - Application of Millimeter Wave, Eddy Current and Thermographic Methods for Detection of Corrosion in Aluminum Substrate. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/03/21/ VL - 894 IS - 1 M3 - Article SP - 1258 EP - 1265 PB - American Institute of Physics SN - 0094243X AB - Aluminum structures exposed to the elements are susceptible to corrosion. Corrosion may cause various mechanical and structural deficiencies such as material thinning. It is desirable to rapidly detect and evaluate the properties of an aluminum substrate early in the corrosion process to avoid costly maintenance actions later. There are several nondestructive testing methods for this purpose. To investigate capabilities of millimeter wave, conventional eddy current, and flash thermography techniques for detection of large corrosion areas in aluminum substrates, two corroded samples were inspected with and without dielectric coating (appliqué). This paper presents the results of the c-scan imaging of these samples using the methods mentioned above. The attributes of these methods for detection and evaluation of large, severe and non-uniform corrosion areas with and without a dielectric coating are discussed. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM KW - CORROSION & anti-corrosives KW - NONDESTRUCTIVE testing KW - MILLIMETER waves KW - EDDY currents (Electric) KW - DIELECTRICS KW - Aluminum Substrate KW - Corrosion KW - Dielectric Coating KW - Eddy Current. KW - Millimeter Wave KW - Nondestructive Testing and Evaluation KW - Thermography N1 - Accession Number: 24505488; Ryley, A. C. 1 Ghasr, M. T. 1 Kharkovsky, S. 1 Zoughi, R. 1 Steffes, Gary 2; Affiliation: 1: Applied Microwave Nondestructive Testing Laboratory (amntl), Electrical and Computer Engineering Department, University of Missouri-Rolla, Rolla, MO 65409. 2: Air Force Research Laboratory (AFRL), Materials and Manufacturing Directorate, 2230 Tenth Street, Ste. 1, Wright-Patterson AFB, OH 45433-7817.; Source Info: 2007, Vol. 894 Issue 1, p1258; Subject Term: ALUMINUM; Subject Term: CORROSION & anti-corrosives; Subject Term: NONDESTRUCTIVE testing; Subject Term: MILLIMETER waves; Subject Term: EDDY currents (Electric); Subject Term: DIELECTRICS; Author-Supplied Keyword: Aluminum Substrate; Author-Supplied Keyword: Corrosion; Author-Supplied Keyword: Dielectric Coating; Author-Supplied Keyword: Eddy Current.; Author-Supplied Keyword: Millimeter Wave; Author-Supplied Keyword: Nondestructive Testing and Evaluation; Author-Supplied Keyword: Thermography; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.2718110 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24505488&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Medina, Enrique A. AU - Allwine, Daniel A. AU - QadeerAhmed, Mohammed AU - Fisher, Joseph AU - Knopp, Jeremy S. AU - Lindgren, Eric A. T1 - Probabilistic Risk Assessment: Impact of Human Factors on Nondestructive Evaluation and Sensor Degradation on Structural Health Monitoring. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/03/21/ VL - 894 IS - 1 M3 - Article SP - 1461 EP - 1468 PB - American Institute of Physics SN - 0094243X AB - Managing human factors in nondestructive evaluation is critical for maintaining inspection reliability. Reliability of structural health monitoring systems is particularly sensitive to sensor degradation over time. To investigate the impact of these issues, probabilistic models for risk assessment and cost-benefit analysis tools have been developed. Quantitative studies are presented evaluating the effects of variations in probability of detection associated with human factors, plus in-situ sensor degradation effects on life cycle measures such as cost and probability of failure. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RISK assessment KW - DETECTORS KW - CRITICAL care medicine KW - HUMAN-machine relationship KW - INDUSTRIAL equipment KW - HEALTH risk assessment KW - Cost Benefit Assessment KW - Models KW - Nondestructive Evaluation KW - Probabilistic Risk Assessment KW - Structural Health Monitoring N1 - Accession Number: 24505460; Aldrin, John C. 1 Medina, Enrique A. 2 Allwine, Daniel A. 3 QadeerAhmed, Mohammed 3 Fisher, Joseph 3 Knopp, Jeremy S. 4 Lindgren, Eric A. 4; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA. 2: Enrique Medina & Associates, P.O. Box 340646, Dayton, OH 45430, USA. 3: Austral Engineering & Software, Inc., Dayton, OH 45430, USA. 4: Air Force Research Laboratory (AFRL/MLLP), Wright-Patterson AFB, OH 45433, USA.; Source Info: 2007, Vol. 894 Issue 1, p1461; Subject Term: RISK assessment; Subject Term: DETECTORS; Subject Term: CRITICAL care medicine; Subject Term: HUMAN-machine relationship; Subject Term: INDUSTRIAL equipment; Subject Term: HEALTH risk assessment; Author-Supplied Keyword: Cost Benefit Assessment; Author-Supplied Keyword: Models; Author-Supplied Keyword: Nondestructive Evaluation; Author-Supplied Keyword: Probabilistic Risk Assessment; Author-Supplied Keyword: Structural Health Monitoring; NAICS/Industry Codes: 923120 Administration of Public Health Programs; NAICS/Industry Codes: 417230 Industrial machinery, equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423830 Industrial Machinery and Equipment Merchant Wholesalers; NAICS/Industry Codes: 423840 Industrial Supplies Merchant Wholesalers; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.2718138 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24505460&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, Steven A. AU - Blackshire, James L. T1 - Effect of Adhesive Material Properties on Induced Stresses in Bonded Sensors. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/03/21/ VL - 894 IS - 1 M3 - Article SP - 1524 EP - 1531 PB - American Institute of Physics SN - 0094243X AB - An analysis of the stresses induced in adhesively bonded sensors from a biaxial stress field in the underlying substrate is presented. Recent Structural Health Monitoring work has looked at using surface bonded sensors to detect and characterize damage in aircraft structures. In addition to the proper design of these systems, it is important that they be able to survive in a sometimes hostile operating environment in terms of weather, vibration, temperature, and mechanical loading of the structural members of the airframe. The analysis first considers the load transfer mechanism from the substrate through the adhesive layer into the sensor. The partitioning of the load between the substrate and sensor is found to depend on the substrate stiffness, the sensor thickness, and the shear modulus and thickness of the adhesive. The analysis then shows that for an elliptically shaped sensor whose maximal dimension is small compared to the substrate in-plane dimensions the stress induced by a biaxial state of stress can be determined using inclusion theory. It is further shown that the stresses in a circular sensor on a substrate subjected to a hydrostatic state of stress can be calculated using equations derived from those used to determine the interfacial pressure for an interference fit between annular cylinders. Finally, the analysis considers induced bending stresses caused by the asymmetric change in thickness in the region where the bonded sensor resides. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADHESIVES KW - DETECTORS KW - STRENGTH of materials KW - STRESS waves KW - STRAINS & stresses (Mechanics) KW - Adhesively Bonded Sensors KW - Induced Stress KW - Structural Health Monitoring N1 - Accession Number: 24505452; Martin, Steven A. 1 Blackshire, James L. 2; Affiliation: 1: NDE Computational Consultants, Dublin, Ohio 43017. 2: Air Force Research Laboratory, NDE Branch, Wright-Patterson AFB, Ohio 45433.; Source Info: 2007, Vol. 894 Issue 1, p1524; Subject Term: ADHESIVES; Subject Term: DETECTORS; Subject Term: STRENGTH of materials; Subject Term: STRESS waves; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: Adhesively Bonded Sensors; Author-Supplied Keyword: Induced Stress; Author-Supplied Keyword: Structural Health Monitoring; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 325520 Adhesive Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.2718146 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24505452&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ko, Ray T. AU - Blodgett, Mark P. AU - Sathish, Shamachary AU - Boehnlein, Thomas R. T1 - Application of Resonant Frequency Eddy Current Technique on a Shot-Peened Nickel-Based Engine-Grade Material. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/03/21/ VL - 894 IS - 1 M3 - Article SP - 1608 EP - 1615 PB - American Institute of Physics SN - 0094243X AB - The shot peening conditions of a nickel-based engine-grade material were evaluated using a novel eddy current measurement technique. With this technique, the shift of a resonant frequency was found to be dependent on variables which also affect conventional eddy current testing. The cable effect is another important variable, which is often neglected in a routine eddy current testing, is also discussed. Experimental results showed that at high frequencies, the shot peening conditions were easily distinguishable using this frequency shift technique. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHOT peening KW - EDDY current testing KW - METALS -- Finishing KW - ELECTRIC testing KW - SURFACE hardening KW - Eddy Current KW - Frequency Shift KW - Resonant Frequency KW - Shot Peen N1 - Accession Number: 24505441; Ko, Ray T. 1 Blodgett, Mark P. 2 Sathish, Shamachary 1 Boehnlein, Thomas R. 1; Affiliation: 1: Structural Integrity Division, University of Dayton Research Institute, 300 College Park Drive, Dayton, Ohio 45469-0120. 2: Metals, Ceramics, and NDE Division, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433.; Source Info: 2007, Vol. 894 Issue 1, p1608; Subject Term: SHOT peening; Subject Term: EDDY current testing; Subject Term: METALS -- Finishing; Subject Term: ELECTRIC testing; Subject Term: SURFACE hardening; Author-Supplied Keyword: Eddy Current; Author-Supplied Keyword: Frequency Shift; Author-Supplied Keyword: Resonant Frequency; Author-Supplied Keyword: Shot Peen; NAICS/Industry Codes: 332813 Electroplating, Plating, Polishing, Anodizing, and Coloring; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.2718157 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24505441&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lindgren, E. A. AU - Knopp, J. S. AU - Aldrin, J. C. AU - Steffes, G. J. AU - Buynak, C. F. T1 - Aging Aircraft NDE: Capabilities, Challenges, and Opportunities. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/03/21/ VL - 894 IS - 1 M3 - Article SP - 1731 EP - 1738 PB - American Institute of Physics SN - 0094243X AB - US Air Force aircraft are managed by Damage Tolerance Assessment (DTA) and Nondestructive Evaluation (NDE) plays a critical role in insuring their flight safety. This paper provides an overview of current NDE capabilities for aircraft structures. The potential migration to Condition-Based Maintenance (CBM) will require NDE to evolve from detection of defects to characterization of their location and size. This represents multiple significant challenges as aircraft have many material and geometry factors that complicate this analysis. This paper provides a strategy to resolve these factors. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRCRAFT industry KW - NONDESTRUCTIVE testing KW - TESTING KW - AERONAUTICS -- Safety measures KW - GEOMETRY KW - PHYSICAL sciences KW - Aging Aircraft KW - Damage Characterization KW - Damage Detection KW - Integral Stiffener Structures KW - Multi-layered Structure N1 - Accession Number: 24505425; Lindgren, E. A. 1 Knopp, J. S. 1 Aldrin, J. C. 2 Steffes, G. J. 1 Buynak, C. F. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Nondestructive Evaluation Branch, WP AFB, OH 45433. 2: Computational Tools, Gurnee, Il 60031.; Source Info: 2007, Vol. 894 Issue 1, p1731; Subject Term: AIRCRAFT industry; Subject Term: NONDESTRUCTIVE testing; Subject Term: TESTING; Subject Term: AERONAUTICS -- Safety measures; Subject Term: GEOMETRY; Subject Term: PHYSICAL sciences; Author-Supplied Keyword: Aging Aircraft; Author-Supplied Keyword: Damage Characterization; Author-Supplied Keyword: Damage Detection; Author-Supplied Keyword: Integral Stiffener Structures; Author-Supplied Keyword: Multi-layered Structure; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 441228 Motorcycle, ATV, and All Other Motor Vehicle Dealers; NAICS/Industry Codes: 441220 Motorcycle, boat and other motor vehicle dealers; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.2718173 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24505425&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Annis, Charles AU - Knopp, Jeremy T1 - Comparing the Effectiveness of a90/95 Calculations. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/03/21/ VL - 894 IS - 1 M3 - Article SP - 1767 EP - 1774 PB - American Institute of Physics SN - 0094243X AB - Most practitioners see a90/95 as a static, single-point summary of an entire inspection’s capability. It purports to be the size of the target having at least 90% probability of detection in 95 of 100 POD experiments under nominally identical conditions. But in some situations the actual coverage is closer to 80%, rather than 95%, with 50% coverage being the median POD(a) curve itself. This paper discusses the two philosophies, the Wald Method, and the Loglikelihood Ratio Method, for constructing lower bounds on POD(a) curves (and therefore determining a90/95) and compares the effectiveness of each as functions of other experimental realities such as sample size and balance. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STANDARD deviations KW - STATISTICS KW - SAMPLING (Statistics) KW - ARITHMETIC mean KW - CURVES KW - PHYSICAL sciences KW - a90/95 KW - Confidence Bounds KW - Loglikelihood Ratio KW - POD KW - Probability KW - Wald Method N1 - Accession Number: 24505421; Annis, Charles 1 Knopp, Jeremy 2; Affiliation: 1: Statistical Engineering, Palm Beach Gardens, FL 33418-7161. 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH.; Source Info: 2007, Vol. 894 Issue 1, p1767; Subject Term: STANDARD deviations; Subject Term: STATISTICS; Subject Term: SAMPLING (Statistics); Subject Term: ARITHMETIC mean; Subject Term: CURVES; Subject Term: PHYSICAL sciences; Author-Supplied Keyword: a90/95; Author-Supplied Keyword: Confidence Bounds; Author-Supplied Keyword: Loglikelihood Ratio; Author-Supplied Keyword: POD; Author-Supplied Keyword: Probability; Author-Supplied Keyword: Wald Method; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 541910 Marketing Research and Public Opinion Polling; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.2718177 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24505421&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Knopp, J. S. AU - Aldrin, J. C. AU - Lindgren, E. AU - Annis, C. T1 - Investigation of a Model-Assisted Approach to Probability of Detection Evaluation. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/03/21/ VL - 894 IS - 1 M3 - Article SP - 1775 EP - 1782 PB - American Institute of Physics SN - 0094243X AB - This paper presents a model-assisted probability of detection (MAPOD) study for inspection of a two-layer airframe structure. Eddy current measurements for varying crack length around fastener holes in a two-layer aluminum structure are studied using both experimental and model-generated data. New statistical algorithms are used to calculate the probability of detection. Good agreement was achieved between empirical and model-assisted approaches. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY current testing KW - ELECTROMAGNETIC testing KW - PROBABILITY theory KW - ALUMINUM construction KW - ALGORITHMS KW - PHYSICAL sciences KW - Eddy Current KW - Model-Assisted Probability of Detection (MAPOD) N1 - Accession Number: 24505420; Knopp, J. S. 1 Aldrin, J. C. 2 Lindgren, E. 1 Annis, C. 3; Affiliation: 1: Air Force Research Laboratory (AFRL/MLLP), Wright-Patterson AFB, OH 45433, USA. 2: Computational Tools, Gurnee, IL 60031, USA. 3: Statistical Engineering, Palm Beach Gardens, FL 33418, USA.; Source Info: 2007, Vol. 894 Issue 1, p1775; Subject Term: EDDY current testing; Subject Term: ELECTROMAGNETIC testing; Subject Term: PROBABILITY theory; Subject Term: ALUMINUM construction; Subject Term: ALGORITHMS; Subject Term: PHYSICAL sciences; Author-Supplied Keyword: Eddy Current; Author-Supplied Keyword: Model-Assisted Probability of Detection (MAPOD); NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.2718178 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24505420&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hovey, Peter W. AU - Berens, Alan P. AU - Knopp, Jeremy T1 - Estimating the Distribution of the Sizes of Flaws Remaining After an Inspection. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2007/03/21/ VL - 894 IS - 1 M3 - Article SP - 1807 EP - 1815 PB - American Institute of Physics SN - 0094243X AB - The U.S. Air Force plans for maintenance and retirement of aircraft based in part on fatigue crack growth models. Periodic inspections are used to help assess airworthiness and plan for future inspections. Nondestructive inspections are not perfect so some cracks are missed and the likelihood that an individual crack is detected is a function of the size of the crack when inspected. Additionally, the crack size distribution is related to the number of flight hours the aircraft has experienced, so not all inspection results come from the same distribution. In a recent study several models were compared that utilize the capability of the inspection system and the variation between aircraft and times of inspections to estimate the distribution of sizes of cracks that were missed during the inspection. This white paper summarizes those results and identifies some methods for extending them. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERONAUTICS KW - AIRPLANES -- Maintenance & repair KW - ENGINEERING inspection KW - STABILITY of airplanes KW - UNITED States KW - Crack Size Distributions KW - Probability of Detection KW - Statistical Estimation KW - UNITED States. Air Force N1 - Accession Number: 24505416; Hovey, Peter W. 1 Berens, Alan P. Knopp, Jeremy 2; Affiliation: 1: Department of Mathematics, University of Dayton, Dayton, OH 45469, USA. 2: Metals, Ceramics, and NDE Division, Air Force Research Laboratory (AFRL/MLLP), Wright-Patterson AFB, OH, 45433, USA.; Source Info: 2007, Vol. 894 Issue 1, p1807; Subject Term: AERONAUTICS; Subject Term: AIRPLANES -- Maintenance & repair; Subject Term: ENGINEERING inspection; Subject Term: STABILITY of airplanes; Subject Term: UNITED States; Author-Supplied Keyword: Crack Size Distributions; Author-Supplied Keyword: Probability of Detection; Author-Supplied Keyword: Statistical Estimation; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 488190 Other Support Activities for Air Transportation; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 928110 National Security; Number of Pages: 9p; Document Type: Article L3 - 10.1063/1.2718183 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24505416&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhang, Lijian AU - U'ren, Alfred B. AU - Erdmann, Reinhard AU - O'Donnell, Kevin A. AU - Silberhorn, Christine AU - Banaszek, Konrad AU - Walmsley, Ian A. T1 - Generation of highly entangled photon pairs for continuous variable Bell inequality violation. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2007/03/20/ VL - 54 IS - 5 M3 - Article SP - 707 EP - 719 SN - 09500340 AB - We propose a novel experimental technique based on the process of parametric downconversion for the generation of photon pairs characterized by ultra-high dimensional spectral entanglement. It is shown that a superlattice of nonlinear and linear segments can be exploited to obtain states exhibiting a remarkably large entanglement, with a Schmidt number in the region of 107. We furthermore consider the application of such highly entangled photon pairs for the violation of a Bell inequality constructed from a measurement of the transverse wavevector Wigner function; such an approach eliminates the need for filtering the photon pairs and consequently eliminates an important potential loophole. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTONS KW - QUANTUM optics KW - BOSE-Einstein gas KW - BELL'S theorem KW - QUANTUM theory KW - OPTICAL polarization KW - GEOMETRY N1 - Accession Number: 24591006; Zhang, Lijian 1 U'ren, Alfred B. 2; Email Address: auren@cicese.mx Erdmann, Reinhard 3 O'Donnell, Kevin A. 2 Silberhorn, Christine 4 Banaszek, Konrad 5 Walmsley, Ian A. 1; Affiliation: 1: Clarendon Laboratory, Oxford University, Parks Road, Oxford, OX1 3PU, UK 2: Centro de Investigación Científica y Educación Superior de Ensenada (CICESE), Ensenada, Baja California, 22860, Mexico 3: Sensors Directorate, Air Force Research Laboratory, Rome, NY 4: Institut für Optik, Information und Photonik Universität Erlangen-Nürnberg, 91058 Erlangen, Germany 5: Institute of Physics, Nicolaus Copernicus University, ul. Grudziadzka 5, PL-87-100 Toruń, Poland; Source Info: 3/20/2007, Vol. 54 Issue 5, p707; Subject Term: PHOTONS; Subject Term: QUANTUM optics; Subject Term: BOSE-Einstein gas; Subject Term: BELL'S theorem; Subject Term: QUANTUM theory; Subject Term: OPTICAL polarization; Subject Term: GEOMETRY; Number of Pages: 13p; Illustrations: 2 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1080/09500340600798454 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24591006&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liu, Jianwei AU - Dai, Liming AU - Baur, Jeff W. T1 - Multiwalled carbon nanotubes for flow-induced voltage generation. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/03/15/ VL - 101 IS - 6 M3 - Article SP - 064312 EP - 6 PB - American Institute of Physics SN - 00218979 AB - Recently it has been reported that voltage can be generated by passing fluids over single-walled carbon nanotube (SWCNT) arrays with potential application to flow sensors with a large dynamic range. The present work investigates voltage generation properties of multiwalled carbon nanotubes (MWCNTs) as a function of the relative orientation of the nanotube array with respect to the flow direction, flow velocity, and solution ionic strength. It was found that the flow-induced voltage can be significantly enhanced by aligning the nanotubes along the flow direction, increasing the flow velocity and/or the ionic strength of the flowing liquid. A flow-induced voltage of ∼30 mV has been generated from our perpendicularly-aligned MWCNT in an aqueous solution of 1M NaCl at a relatively low flow velocity of 0.0005 m/s, which is 15 times higher than the highest voltage reported for single-walled carbon nanotubes. The results are generally consistent with the pulsating asymmetric ratcheting mechanism proposed for SWCNT arrays, in which an asymmetrical spatial distributed strain forms from interactions with the polar and ionic species at the tube surface and is driven along the tube by the fluid flow. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON nanotubes KW - NANOTUBES KW - RESEARCH KW - ELECTRIC potential KW - FLOW meters KW - IONIC structure N1 - Accession Number: 24580604; Liu, Jianwei 1 Dai, Liming 1 Baur, Jeff W. 2; Affiliation: 1: Department of Chemical and Materials Engineering, School of Engineering, University of Dayton, 300 College Park, Dayton, Ohio 45469-0240 2: Air Force Research Laboratory, Advanced Composites Branch, Wright-Patterson AFB, Ohio 45433-7750; Source Info: 3/15/2007, Vol. 101 Issue 6, p064312; Subject Term: CARBON nanotubes; Subject Term: NANOTUBES; Subject Term: RESEARCH; Subject Term: ELECTRIC potential; Subject Term: FLOW meters; Subject Term: IONIC structure; NAICS/Industry Codes: 334514 Totalizing Fluid Meter and Counting Device Manufacturing; Number of Pages: 6p; Illustrations: 3 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1063/1.2710776 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24580604&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chroneos, Alexander AU - Ashley, Nicholas J. AU - Desai, Kaajal H. AU - Maguire, John F. AU - Grimes, R. W. T1 - Optimized hydrogen positions for aluminium and iron containing hydroxide minerals. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2007/03/15/ VL - 42 IS - 6 M3 - Article SP - 2024 EP - 2029 PB - Springer Science & Business Media B.V. SN - 00222461 AB - The structures of a number of hydroxide and oxyhydroxide minerals have previously been reported without the hydrogen positions explicitly defined. Here we use two atomic scale computer simulation techniques, one based on classical ionic potentials, the other on density functional theory (DFT), to predict these positions. The aim is not only to provide data that can be used as the basis for future experimental structure optimizations but also model parameters that can be used to predict complex hydroxide structures. The efficacy of the approach is demonstrated through the comparison of predicted and experimental data for minerals whose hydrogen positions are known. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROXIDES KW - HYDROXIDE minerals KW - SIMULATION methods & models KW - IONIC structure KW - DENSITY functionals KW - HYDROGEN N1 - Accession Number: 24331038; Chroneos, Alexander 1,2 Ashley, Nicholas J. 1 Desai, Kaajal H. 1 Maguire, John F. 3 Grimes, R. W. 1; Email Address: r.grimes@ic.ac.uk; Affiliation: 1: Department of Materials, Imperial College, London SW7 2BP, UK. 2: Institute of Microelectronics, NCSR Demokritos, Aghia Paraskevi 15310, Greece. 3: AFRL/MLMR, Air Force Research Laboratory, Wright Patterson AFB, OH 45433, USA.; Source Info: Mar2007, Vol. 42 Issue 6, p2024; Subject Term: HYDROXIDES; Subject Term: HYDROXIDE minerals; Subject Term: SIMULATION methods & models; Subject Term: IONIC structure; Subject Term: DENSITY functionals; Subject Term: HYDROGEN; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 6p; Illustrations: 4 Charts; Document Type: Article L3 - 10.1007/s10853-006-0816-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24331038&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anthony J. Midey AU - A. A. Viggiano T1 - Kinetics of Sulfur Oxide, Sulfur Fluoride, and Sulfur Oxyfluoride Anions with Atomic Species at 298 and 500 K. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2007/03/15/ VL - 111 IS - 10 M3 - Article SP - 1852 EP - 1859 SN - 10895639 AB - The rate constants and product-ion branching ratios for the reactions of sulfur dioxide (SO2-), sulfur fluoride (SFn-), and sulfur oxyfluoride anions (SOxFy-) with H, H2, N, N2, NO, and O have been measured in a selected-ion flow tube (SIFT). H atoms were generated through a microwave discharge on a H2/He mixture, whereas O atoms were created via N atoms titrated with NO, where the N had been created by a microwave discharge on N2. None of the ions reacted with H2, N2or NO; thus, the rate constants are <1 × 10-12cm3s-1. SOxFy-ions react with H by only fluorine-atom abstraction to form HF at 298 and 500 K. Successive F-atom removal does not occur at either temperature, and the rate constants show no temperature dependence over this limited range. SO2-and F-undergo associative detachment with H to form a neutral molecule and an electron. Theoretical calculations of the structures and energetics of HSO2-isomers were performed and showed that structural differences between the ionic and neutral HSO2species can account for at least part of the reactivity limitations in the SO2-H reaction. All of the SOxFy-ions react with O; however, only SO2-reacts with both N and O. SOxFy-reactions with N (SO2-excluded) have a rate constant limit of <1 × 10-11cm3s-1. The rate constants for the SOxFy-reactions with H and O are ≤25% of the collision rate constant, as seen previously in the reactions of these ions with O3, consistent with a kinetic bottleneck limiting the reactivity. The only exceptions are the reactions of SO2-with N and O, which are much more efficient. Three pathways were observed with O atoms:  F-atom exchange in the reactant ion, F-exchange in the reactant ion, and charge transfer to the O atom. No associative detachment was observed in the N- and O-atom reactions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONS KW - SULFUR dioxide KW - ANIONS KW - PHYSICAL & theoretical chemistry N1 - Accession Number: 24395970; Anthony J. Midey 1 A. A. Viggiano 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom Air Force Base,Massachusetts 01731-3010; Source Info: Mar2007, Vol. 111 Issue 10, p1852; Subject Term: IONS; Subject Term: SULFUR dioxide; Subject Term: ANIONS; Subject Term: PHYSICAL & theoretical chemistry; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24395970&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Joy E. Rogers AU - Jonathan E. Slagle AU - Daniel G. McLean AU - Richard L. Sutherland AU - Mark C. Brant AU - James Heinrichs AU - Rachel Jakubiak AU - Ramamurthi Kannan AU - Loon-Seng Tan AU - Paul A. Fleitz T1 - Insight into the Nonlinear Absorbance of Two Related Series of Two-Photon Absorbing Chromophores. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2007/03/15/ VL - 111 IS - 10 M3 - Article SP - 1899 EP - 1906 SN - 10895639 AB - A comprehensive photophysical study of the linear and nonlinear absorption properties has been carried out on two series of two-photon absorbing dyes to gain insight into how structure−property relationships influence observed nonlinear absorption. The materials studied consist of an electron accepting benzothiazole group connected to an electron donating diphenylamine via a fluorene bridging group. Two series differ from each other by the addition of one phenyl group and for each series one-arm (dipolar, AF240 and AF270), two-arm (quadrupolar, AF287 and AF295), and three-arm (octupolar, AF350 and AF380) versions were studied. Overall the AF240 series exhibits higher intrinsic two-photon absorption (TPA) cross-sections than the AF270 series as well as enhanced nanosecond nonlinear absorption, with an increase with number of branches. The enhanced nanosecond nonlinearity is understood by taking into account the contribution from the singlet and triplet excited states and was verified by a two-photon assisted excited-state absorption model that satisfactorily predicts the nonlinear absorption of the chromophores. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIPHENYL compounds KW - ABSORPTION KW - DYES & dyeing KW - PHYSICAL & theoretical chemistry N1 - Accession Number: 24395976; Joy E. Rogers 1 Jonathan E. Slagle 1 Daniel G. McLean 1 Richard L. Sutherland 1 Mark C. Brant 1 James Heinrichs 1 Rachel Jakubiak 1 Ramamurthi Kannan 1 Loon-Seng Tan 1 Paul A. Fleitz 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base,Ohio 45433, UES, Inc., Dayton, Ohio 45432, AT&T Government Solutions, Dayton, Ohio 45324, ScienceApplications International Corporation, Dayton, Ohio 45431, Anteon Corporation, Dayton, Ohio 45431, andSystran Systems Corporation, Dayton, Ohio 45432; Source Info: Mar2007, Vol. 111 Issue 10, p1899; Subject Term: BIPHENYL compounds; Subject Term: ABSORPTION; Subject Term: DYES & dyeing; Subject Term: PHYSICAL & theoretical chemistry; NAICS/Industry Codes: 325130 Synthetic Dye and Pigment Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24395976&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - John Caulfield, H. AU - Soref, Richard A. AU - Qian, Lei AU - Zavalin, Andrey AU - Hardy, James T1 - Generalized optical logic elements – GOLEs JO - Optics Communications JF - Optics Communications Y1 - 2007/03/15/ VL - 271 IS - 2 M3 - Article SP - 365 EP - 376 SN - 00304018 AB - Abstract: A Generalized Optical Logic Element or GOLE is device that performs any of the 16 Boolean logic operations on signals in an optical beam with very fast switching among functions. The advantages of a generalized or universal gate in manufacturing are obvious. Extremely flexible functioning becomes possible if the GOLE functionality is switched in response to earlier computations. Likewise Field Programmable Gate Arrays or FPGAs can be used to fix the GOLE functions, making one of the most powerful and flexible processor units ever designed – called a Field GOLE. Such systems can be made in bulk optics to utilize Spatial Light Modulator or SLM capabilities, but integrated optics on silicon will be the choice for most applications. GOLEs can be generalized in several ways to become Fredkin gates and generalized Fredkin gates. They can also be cascaded similarly to electronic gates. [Copyright &y& Elsevier] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER beams KW - SIGNAL processing KW - BOOLEAN algebra KW - FIELD programmable gate arrays N1 - Accession Number: 23742918; John Caulfield, H. 1 Soref, Richard A. 2 Qian, Lei 1 Zavalin, Andrey 1; Email Address: azavalin@fisk.edu Hardy, James 3; Affiliation: 1: Fisk University, 1000 17th Avenue, N., Nashville, TN 37208, United States 2: Air Force Research Laboratory, Sensors Directorate, Hansom AFB, MA 0173, United States 3: Idaho State University, 921 South 8th Avenue, Pocatello, ID 83209, United States; Source Info: Mar2007, Vol. 271 Issue 2, p365; Subject Term: LASER beams; Subject Term: SIGNAL processing; Subject Term: BOOLEAN algebra; Subject Term: FIELD programmable gate arrays; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.optcom.2006.10.051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23742918&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Strawser, Richard E. AU - Leedy, Kevin D. AU - Cortez, Rebecca AU - Ebel, John L. AU - Dooley, Steven R. AU - Herrmann Abell, Cari F. AU - Bright, Victor M. T1 - Influence of metal stress on RF MEMS capacitive switches JO - Sensors & Actuators A: Physical JF - Sensors & Actuators A: Physical Y1 - 2007/03/15/ VL - 134 IS - 2 M3 - Article SP - 600 EP - 605 SN - 09244247 AB - Abstract: The electrical and mechanical response of radio frequency (RF) microelectromechanical systems (MEMS) switches depends critically on the profile of the released structure. Stress gradients within the material can significantly alter the structural profile thereby changing the spring constant and the resulting switch release times. To investigate the influence of metal stress on spring constant and release time, a series of RF MEMS electrostatically actuated capacitive microswitches was fabricated with varying beam metallizations. The total thickness of the beam was fixed at 700nm consisting primarily of Au while thin (5nm or 20nm thick) Ti layers were inserted at different positions within the beam. Changes in the location of the Ti layer within the bridge thickness resulted in distinct structural profiles across both the width and length of the released microswitches. Profile differences were quantified using white light interferometric microscopy. As the Ti layer moved toward the bottom of the tri-layer stack, beam deformation increased, spring constants increased, and release times decreased. Results demonstrated that release times could be reduced by an order of magnitude when compared to all Au switches. [Copyright &y& Elsevier] AB - Copyright of Sensors & Actuators A: Physical is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTROMECHANICAL systems KW - RADIO frequency KW - FREQUENCIES of oscillating systems KW - ELECTROMECHANICAL devices KW - Beam deformation KW - Microbridge metallizations KW - Radius of curvature KW - Release time KW - RF MEMS switches KW - Spring constant KW - Switching speed N1 - Accession Number: 24300932; Strawser, Richard E. 1; Email Address: richard.strawser@wpafb.af.mil Leedy, Kevin D. 1 Cortez, Rebecca 1 Ebel, John L. 1 Dooley, Steven R. 1 Herrmann Abell, Cari F. 2 Bright, Victor M. 3; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH 45433, USA 2: Departments of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309, USA 3: Departments of Mechanical Engineering, University of Colorado, Boulder, CO 80309, USA; Source Info: Mar2007, Vol. 134 Issue 2, p600; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: RADIO frequency; Subject Term: FREQUENCIES of oscillating systems; Subject Term: ELECTROMECHANICAL devices; Author-Supplied Keyword: Beam deformation; Author-Supplied Keyword: Microbridge metallizations; Author-Supplied Keyword: Radius of curvature; Author-Supplied Keyword: Release time; Author-Supplied Keyword: RF MEMS switches; Author-Supplied Keyword: Spring constant; Author-Supplied Keyword: Switching speed; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334514 Totalizing Fluid Meter and Counting Device Manufacturing; NAICS/Industry Codes: 334512 Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use; NAICS/Industry Codes: 334290 Other Communications Equipment Manufacturing; NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.sna.2006.06.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24300932&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sun, Greg AU - Khurgin, Jacob B. AU - Soref, Richard A. T1 - Practicable enhancement of spontaneous emission using surface plasmons. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/03/12/ VL - 90 IS - 11 M3 - Article SP - 111107 EP - 1 PB - American Institute of Physics SN - 00036951 AB - The authors develop a rigorous theory of the enhancement of spontaneous emission from a light emitting device via coupling the radiant energy in and out of surface plasmon polaritons (SPPs) on the metal-dielectric interface. Using the GaN/Ag system as an example, the authors show that using SPP pays off only for emitters that have a low luminescence efficiency. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMONS (Physics) KW - EXCITON theory KW - LIGHT sources KW - POLARITONS KW - LUMINESCENCE KW - PHYSICS N1 - Accession Number: 24482252; Sun, Greg 1 Khurgin, Jacob B. 2 Soref, Richard A. 3; Affiliation: 1: Department of Physics, University of Massachusetts Boston, Boston, Massachusetts 02125 2: Department of Electrical and Computer Engineering, The Johns Hopkins University Baltimore, Maryland 21218 3: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731; Source Info: 3/12/2007, Vol. 90 Issue 11, p111107; Subject Term: PLASMONS (Physics); Subject Term: EXCITON theory; Subject Term: LIGHT sources; Subject Term: POLARITONS; Subject Term: LUMINESCENCE; Subject Term: PHYSICS; Number of Pages: 3p; Illustrations: 2 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.2539745 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24482252&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nguyen, Kiet A. AU - Day, Paul N. AU - Pachter, Ruth T1 - Effects of solvation on one- and two-photon spectra of coumarin derivatives: A time-dependent density functional theory study. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2007/03/07/ VL - 126 IS - 9 M3 - Article SP - 094303 PB - American Institute of Physics SN - 00219606 AB - We report one- and two-photon absorption excitation energies and cross sections for a series of 7-aminocoumarins using time-dependent density functional theory with various basis sets and functionals, including exchange-correlation functionals using the Coulomb-attenuating method, to evaluate their performance in the gas phase and in solvents. Except for the results of one functional, the computed one-photon excitation energies and transition dipole moments are in good agreement with experiment. The range of errors obtained from various functionals is discussed in detail. The relationship of donor and acceptor groups with the one- and two-photon resonances and intensities is also discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COUMARINS KW - SOLVATION KW - PHOTONS KW - DENSITY functionals KW - SPECTRUM analysis KW - SOLVENTS KW - DIPOLE moments N1 - Accession Number: 25038567; Nguyen, Kiet A. 1 Day, Paul N. 1 Pachter, Ruth 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: 3/7/2007, Vol. 126 Issue 9, p094303; Subject Term: COUMARINS; Subject Term: SOLVATION; Subject Term: PHOTONS; Subject Term: DENSITY functionals; Subject Term: SPECTRUM analysis; Subject Term: SOLVENTS; Subject Term: DIPOLE moments; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 10p; Illustrations: 2 Diagrams, 4 Charts; Document Type: Article L3 - 10.1063/1.2464110 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25038567&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brillson, L. J. AU - Mosbacker, H. L. AU - Hetzer, M. J. AU - Strzhemechny, Y. AU - Jessen, G. H. AU - Look, D. C. AU - Cantwell, G. AU - Zhang, J. AU - Song, J. J. T1 - Dominant effect of near-interface native point defects on ZnO Schottky barriers. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2007/03/05/ VL - 90 IS - 10 M3 - Article SP - 102116 EP - 1 PB - American Institute of Physics SN - 00036951 AB - The authors used depth-resolved cathodoluminescence spectroscopy and current-voltage measurements to probe metal-ZnO diodes as a function of native defect concentration, oxygen plasma processing, and metallization. The results show that resident native defects in ZnO single crystals and native defects created by the metallization process dominate metal-ZnO Schottky barrier heights and ideality factors. Results for [formula] faces processed with room temperature remote oxygen plasmas to remove surface adsorbates and reduce subsurface native defects demonstrate the pivotal importance of crystal growth quality and metal-ZnO reactivity in forming near-interface states that control Schottky barrier properties. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LUMINESCENCE KW - AFTERGLOW (Physics) KW - SPECTRUM analysis KW - TEMPERATURE KW - CRYSTAL growth KW - PHYSICS N1 - Accession Number: 24422011; Brillson, L. J. 1 Mosbacker, H. L. 1 Hetzer, M. J. 1 Strzhemechny, Y. 2 Jessen, G. H. 3 Look, D. C. 4 Cantwell, G. 5 Zhang, J. 5 Song, J. J. 5; Affiliation: 1: Department of Electrical and Computer Engineering, The Ohio State University, Columbus, Ohio 43210 2: Department of Physics and Astronomy, Texas Christian University, Fort Worth, Texas 76129 3: Sensors Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433 4: Semiconductor Research Center, Wright State University, Dayton, Ohio 45433 and Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433 5: ZN Technology, Inc., 910 Columbia St., Brea, California 92821; Source Info: 3/5/2007, Vol. 90 Issue 10, p102116; Subject Term: LUMINESCENCE; Subject Term: AFTERGLOW (Physics); Subject Term: SPECTRUM analysis; Subject Term: TEMPERATURE; Subject Term: CRYSTAL growth; Subject Term: PHYSICS; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.2711536 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24422011&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Milada Ikanovic AU - Walter Rudzinski AU - John Bruno AU - Maria Carrillo AU - Sulatha Dwarakanath AU - Suneetha Bhahdigadi AU - Poornima Rao AU - Johnathan Kiel AU - Carrie Andrews T1 - Fluorescence Assay Based on Aptamer-Quantum Dot Binding to Bacillus thuringiensis Spores. JO - Journal of Fluorescence JF - Journal of Fluorescence Y1 - 2007/03/02/ VL - 17 IS - 2 M3 - Article SP - 193 EP - 199 SN - 10530509 AB - Abstract??A novel assay was developed for the detection ofBacillus thuringiensis(BT) spores. The assay is based on the fluorescence observed after binding an aptamer-quantum dot conjugate to BT spores.Thein vitroselection and amplification technique called SELEX (Systematic Evolution of Ligands by EXponential enrichment) was used in order to identify the DNA aptamer sequence specific for BT. The 60 base aptamer was then coupled to fluorescent zinc sulfide-capped, cadmium selenide quantum dots (QD). The assay is semi-quantitative, specific and can detect BT at concentrations of about 1,000 colony forming units/ml. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Fluorescence is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM dots KW - BACILLUS thuringiensis KW - FLUORESCENCE KW - ZINC sulfide N1 - Accession Number: 24324488; Milada Ikanovic 1 Walter Rudzinski 1 John Bruno 2 Maria Carrillo 2 Sulatha Dwarakanath 3 Suneetha Bhahdigadi 3 Poornima Rao 3 Johnathan Kiel 4 Carrie Andrews 4; Affiliation: 1: Texas State University-San Marcos, 601 University Drive Department of Chemistry and Biochemistry San Marcos TX 78666 USA San Marcos TX 78666 USA 2: Operational Technologies Corporation 4100 NW Loop 410, Suite 230 San Antonio TX 78229 USA 4100 NW Loop 410, Suite 230 San Antonio TX 78229 USA 3: NanoScience Diagnostics, Inc. 1826 Kramer Lane, Suite E Austin TX 78758 USA 1826 Kramer Lane, Suite E Austin TX 78758 USA 4: HEPC, 2486 Gillingham Drive Air Force Research Laboratory Bldg. 175 E, Brooks City-Base San Antonio TX 78235 USA Bldg. 175 E, Brooks City-Base San Antonio TX 78235 USA; Source Info: Mar2007, Vol. 17 Issue 2, p193; Subject Term: QUANTUM dots; Subject Term: BACILLUS thuringiensis; Subject Term: FLUORESCENCE; Subject Term: ZINC sulfide; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24324488&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ashcroft, Bruce T1 - G.I. Nightingales: The Army Nurse Corps in World War II. JO - Air Power History JF - Air Power History Y1 - 2007///Spring2007 VL - 54 IS - 1 M3 - Book Review SP - 54 EP - 54 PB - Air Force Historical Foundation SN - 1044016X AB - The article reviews the book "G.I. Nightingales: The Army Nurse Corps in World War II," by Barbara Brooks Tomblin. KW - NURSES KW - NONFICTION KW - TOMBLIN, Barbara Brooks KW - GI Nightingales: The Army Nurse Corps in World War II (Book) N1 - Accession Number: 24293046; Ashcroft, Bruce 1; Affiliation: 1: Air Education and Training Command History Office; Source Info: Spring2007, Vol. 54 Issue 1, p54; Subject Term: NURSES; Subject Term: NONFICTION; Reviews & Products: GI Nightingales: The Army Nurse Corps in World War II (Book); People: TOMBLIN, Barbara Brooks; Number of Pages: 1/2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24293046&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ritter, Jill AU - Lyons, Joseph B. AU - Swindler, Stephanie D. T1 - Large-scale coordination: developing a framework to evaluate socio-technical and collaborative issues. JO - Cognition, Technology & Work JF - Cognition, Technology & Work Y1 - 2007/03// VL - 9 IS - 1 M3 - Article SP - 33 EP - 38 SN - 14355558 AB - Collaborative logistics, logistics-based networks, focused logistics, and distributed adaptive logistics refer to innovative approaches to logistics planning/execution encompassing automated, adaptive technologies, and proactive human collaboration. Because these approaches are collaborative and distributed in nature, they create novel challenges for coordination and collaboration within socio-technical systems, which encompass the collaborative technologies, the people or machines engaged in collaboration, and the social context of collaboration and coordination. The present challenges need to be met by theoretical models incorporating multidisciplinary perspectives in the study of collaboration. The current paper introduces a collaboration framework which may inform the design and implementation of collaborative technologies and systems, to include distributed logistics teams, from a socio-technical perspective. [ABSTRACT FROM AUTHOR] AB - Copyright of Cognition, Technology & Work is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOGISTICS KW - HUMAN-machine systems KW - TECHNOLOGICAL innovations KW - SOCIAL context KW - SYSTEMS design KW - Distributed adaptive logistics KW - Human-centric collaboration KW - Large-scale coordination KW - Logistics networks KW - Socio-technical systems N1 - Accession Number: 24091241; Ritter, Jill 1; Email Address: jill.ritter@wpafb.af.mil Lyons, Joseph B. 1 Swindler, Stephanie D. 1; Affiliation: 1: Air Force Research Laboratory, Logistics Readiness Branch (AFRL/HEAL), 2698 G Street, Bldg 190, Wright-Patterson Air Force Base, OH 45433-7604, USA; Source Info: Mar2007, Vol. 9 Issue 1, p33; Subject Term: LOGISTICS; Subject Term: HUMAN-machine systems; Subject Term: TECHNOLOGICAL innovations; Subject Term: SOCIAL context; Subject Term: SYSTEMS design; Author-Supplied Keyword: Distributed adaptive logistics; Author-Supplied Keyword: Human-centric collaboration; Author-Supplied Keyword: Large-scale coordination; Author-Supplied Keyword: Logistics networks; Author-Supplied Keyword: Socio-technical systems; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; Number of Pages: 6p; Illustrations: 1 Diagram, 1 Chart; Document Type: Article L3 - 10.1007/s10111-006-0060-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24091241&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hu, J.J. AU - Muratore, C. AU - Voevodin, A.A. T1 - Silver diffusion and high-temperature lubrication mechanisms of YSZ–Ag–Mo based nanocomposite coatings JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2007/03// VL - 67 IS - 3/4 M3 - Article SP - 336 EP - 347 SN - 02663538 AB - Abstract: Yttria-stabilized zirconia (YSZ) nanocomposite coatings consisting of silver and molybdenum were produced by a hybrid process of filtered vacuum arc, magnetron sputtering and pulsed laser depositions for tribological investigations at different temperatures. The coatings with 24at.% Ag and 10at.% Mo contents showed a friction coefficient of 0.4 or less for all temperatures from 25 to 700°C. The wear scar surfaces and coating cross-sections were studied using scanning electron, transmission electron, scanning transmission electron and focused ion beam microscopes, which also provided the information on chemical composition distributions of silver and molybdenum along with microstructure features. It was demonstrated that silver diffusion and coalescence on surfaces played an important part in the high-temperature lubrication mechanism of the YSZ–Ag–Mo coatings. Silver was found to be an effective lubricant at temperatures below 500°C and its coalescence on the surface isolated molybdenum inside coatings from ambient oxygen. Lubricious oxides of molybdenum were formed and lubricated at temperatures above 500°C when the silver was worn off the contact surface. For silver containment inside the coating at high temperatures, a multilayer architecture was built by inserting a TiN diffusion barrier layer in the composite coatings. Microscopic observations showed that this barrier layer prevented silver exit to the coating surface. At the same time, this enabled a subsequent lateral lubricant supply toward a wear scar location where the diffusion barrier layer was worn through and/or for a next thermal cycle. The multilayer coating maintained a friction coefficient of 0.4 or less for more than 25,000 cycles, while the monolithic coating lasted less than 5000 cycles. In addition, a TiN surface barrier layer with pinholes was deposited on the YSZ–Ag–Mo composite surface to control vertical silver diffusion. With this coating design, the coating wear lifetime was significantly increased beyond 50,000 cycles. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE coatings KW - COATING processes KW - ZIRCONIUM oxide KW - VACUUM technology KW - High-temperature lubrication KW - Molybdenum KW - Multilayer KW - Nanocomposite KW - Silver KW - Yttria-stabilized zirconia N1 - Accession Number: 23604805; Hu, J.J.; Email Address: Jianjun.Hu@WPAFB.AF.MIL Muratore, C. 1 Voevodin, A.A. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory (AFRL/MLBT), Building 654, 2941 Hobson Way, Wright-Patterson Air Force Base, Dayton, OH 45433-7750, United States of America; Source Info: Mar2007, Vol. 67 Issue 3/4, p336; Subject Term: SURFACE coatings; Subject Term: COATING processes; Subject Term: ZIRCONIUM oxide; Subject Term: VACUUM technology; Author-Supplied Keyword: High-temperature lubrication; Author-Supplied Keyword: Molybdenum; Author-Supplied Keyword: Multilayer; Author-Supplied Keyword: Nanocomposite; Author-Supplied Keyword: Silver; Author-Supplied Keyword: Yttria-stabilized zirconia; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.compscitech.2006.09.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23604805&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sztipanovits, Janos AU - Bay, John AU - Rohrbough, Larry AU - Sastry, Shankar AU - Schmidt, Douglas C. AU - Whitaker, Norm AU - Wilson, Don AU - Winter, Don T1 - Escher: A New Technology Transitioning Model. JO - Computer (00189162) JF - Computer (00189162) Y1 - 2007/03// VL - 40 IS - 3 M3 - Article SP - 90 EP - 92 SN - 00189162 AB - The article discusses a new technology transitioning model called the Escher model. The returns on a product as an investment must be sufficient to fuel the research. Technology transitioning helps scientists and researchers decide what areas to focus on when attempting to create new products. Including the Escher transitioning model, two others exist, the traditional model and the consortium model. The traditional model dictates that universities and nonprofits receive public funding and convey their findings via publications and education. The consortium model is a conglomeration of industry partners who work together to fund research. The Embedded System Consortium for Hybrid and Embedded Research (Escher) model relies on government and industry funding to benefit both. KW - EMBEDDED computer systems KW - GOVERNMENT research & development contracts KW - RESEARCH & development partnership KW - TECHNOLOGICAL innovations -- Economic aspects KW - INDUSTRIAL research KW - NEW product development KW - RESEARCH KW - RESEARCH universities & colleges KW - ECONOMIC aspects KW - UNITED States N1 - Accession Number: 24466926; Sztipanovits, Janos 1 Bay, John 2 Rohrbough, Larry 3 Sastry, Shankar 4 Schmidt, Douglas C. 1 Whitaker, Norm 5 Wilson, Don 6 Winter, Don 7; Affiliation: 1: Vanderbilt University 2: Air Force Research Laboratory 3: Escher Research Institute 4: University of California, Berkeley 5: DARPA 6: Raytheon 7: Boeing; Source Info: Mar2007, Vol. 40 Issue 3, p90; Subject Term: EMBEDDED computer systems; Subject Term: GOVERNMENT research & development contracts; Subject Term: RESEARCH & development partnership; Subject Term: TECHNOLOGICAL innovations -- Economic aspects; Subject Term: INDUSTRIAL research; Subject Term: NEW product development; Subject Term: RESEARCH; Subject Term: RESEARCH universities & colleges; Subject Term: ECONOMIC aspects; Subject Term: UNITED States; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 334111 Electronic Computer Manufacturing; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 541613 Marketing Consulting Services; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24466926&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adve, Raviraj AU - Hale, Todd AU - Wicks, Michael T1 - Knowledge based adaptive processing for ground moving target indication JO - Digital Signal Processing JF - Digital Signal Processing Y1 - 2007/03// VL - 17 IS - 2 M3 - Article SP - 495 EP - 514 SN - 10512004 AB - Abstract: This paper presents a preliminary knowledge based approach to space-time adaptive processing (STAP) for ground moving target indication from an airborne platform. The KB-processor accounts for practical aspects of adaptive processing, including detection and processing of non-homogeneous data, appropriate selection of training data, and accounting for array effects such as mutual coupling and channel mismatch. In combining these hitherto separate STAP issues into a unified approach, this paper furthers the move of STAP from theory to practice. The KB-approach is tested using measured data from the multi-channel airborne radar measurements (MCARM) program. [Copyright &y& Elsevier] AB - Copyright of Digital Signal Processing is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE-time codes KW - CELL phone systems KW - DIGITAL communications KW - ADAPTIVE antennas N1 - Accession Number: 23893558; Adve, Raviraj 1; Email Address: rsadve@comm.utoronto.ca Hale, Todd 2 Wicks, Michael 3; Affiliation: 1: Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON M5S 3G4, Canada 2: Air Force Institute of Technology, 2950 P Street, Wright-Patterson AFB, OH 45324, USA 3: Air Force Research Laboratory, Sensors Directorate, 26 Electronics Parkway, Rome, NY 13403, USA; Source Info: Mar2007, Vol. 17 Issue 2, p495; Subject Term: SPACE-time codes; Subject Term: CELL phone systems; Subject Term: DIGITAL communications; Subject Term: ADAPTIVE antennas; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 20p; Document Type: Article L3 - 10.1016/j.dsp.2005.06.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23893558&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bai, Shih Jung AU - Sun, Ju-Pin AU - Huang, Jen-Wei AU - Dang, Thuy D. T1 - Solid electrolyte of fully conjugated, water–soluble rigid-rod polymer with articulated backbone for isotropic ionic conductivity JO - Electrochemistry Communications JF - Electrochemistry Communications Y1 - 2007/03// VL - 9 IS - 3 M3 - Article SP - 517 EP - 521 SN - 13882481 AB - Abstract: An intractable and fully conjugated, aromatic, heterocyclic rigid-rod polymer poly[1,7-dihydrobenzo[1,2-d:4,5-d′]diimidazo-2,6-diyl-(2-sulfo)-p-phenylene] (sPBI) was derivatized with isophthalic acid for an articulated rigid-rod polymer asPBI. This molecular backbone alternation significantly changed the intrinsic viscosity [η] of sPBI from 9.4dL/g to 1.1dL/g for asPBI containing minute (1/50 molar ratio) articulation moiety indicating more a coil-like polymer for asPBI. Both sPBI and asPBI were reacted with 1,3-propanesultone in dimethylsulfoxide containing lithium hydroxide for water–soluble polyelectrolytes sPBI-Li+ and asPBI-Li+, respectively. The polyelectrolytes were dissolved in aqueous solution with up to 5wt.% of LiI dopant and cast into films. Direct-current conductivity (σ) was measured at room-temperature parallel to the film surface yielding σ ∥=3.2×10−3 S/cm and 2.8×10−3 S/cm for sPBI-Li+ and asPBI-Li+ (1/15), respectively. X-ray scattering and electron microscopy suggested that the cast films of sPBI-Li+ was in-plane isotropic but out-of-the plane anisotropic, and of asPBI-Li+ was three-dimensionally isotropic. It suggested that cast films of asPBI-Li+ having articulated backbone acquired an isotropic microstructure as well as an isotropic room-temperature σ superior to those of other solid polyelectrolytes. [Copyright &y& Elsevier] AB - Copyright of Electrochemistry Communications is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - POLYELECTROLYTES KW - LITHIUM KW - ISOTROPY subgroups KW - Backbone articulation KW - Conjugated polymer KW - Isotropic conductivity KW - Solid electrolyte KW - Water soluble rigid-rod N1 - Accession Number: 24303847; Bai, Shih Jung 1; Email Address: sjbai@mail.nsysu.edu.tw Sun, Ju-Pin 1 Huang, Jen-Wei 1 Dang, Thuy D. 2; Affiliation: 1: Institute of Materials Science and Engineering, National Sun Yat-sen University Kaohsiung, 70 Lein Hai Road, Taiwan 80424, Taiwan, ROC 2: Air Force Research Laboratory, Polymer Branch (AFRL/MLBP), 2941 P St. Ste. 1 Wright-Patterson AFB, Ohio 45433-7750, USA; Source Info: Mar2007, Vol. 9 Issue 3, p517; Subject Term: POLYMERS; Subject Term: POLYELECTROLYTES; Subject Term: LITHIUM; Subject Term: ISOTROPY subgroups; Author-Supplied Keyword: Backbone articulation; Author-Supplied Keyword: Conjugated polymer; Author-Supplied Keyword: Isotropic conductivity; Author-Supplied Keyword: Solid electrolyte; Author-Supplied Keyword: Water soluble rigid-rod; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.elecom.2006.10.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24303847&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Skebo, Jeanne E. AU - Grabinski, Christin M. AU - Schrand, Amanda M. AU - Schlager, John J. AU - Hussain, Saber M. T1 - Assessment of Metal Nanoparticle Agglomeration, Uptake, and Interaction Using High-Illuminating System. JO - International Journal of Toxicology (Taylor & Francis) JF - International Journal of Toxicology (Taylor & Francis) Y1 - 2007/03//Mar/Apr2007 VL - 26 IS - 2 M3 - Article SP - 135 EP - 141 PB - Taylor & Francis Ltd SN - 10915818 AB - In the present study, an ultrahigh-resolution system was applied as a simple and convenient technique to characterize the extent of metal nanoparticle agglomeration in solution and to visualize nanoparticle agglomeration, uptake, and surface interaction in three cell phenotypes under normal culture conditions. The experimental results demonstrated that silver (25, 80, 130 nm); aluminum (80 nm); and manganese (40 nm) particles and agglomerates were effectively internalized by rat liver cells (BRL 3A), rat alveolar macrophages (MACs), and rat neuroendocrine cells (PC-12). Individual and agglomerated nanoparticles were observed within the cells and agglomerates were observed on the cell surface membranes. The particles were initially dispersed in aqueous or physiological balanced salt solutions and agglomeration was observed using the Ultra Resolution Imaging (URI) system. Different methods, such as sonication and addition of surfactant (0.1% sodium dodecyl sulfate [SDS]) reduced agglomeration. Due to effects of SDS itself on cell viability, the surfactant could not be directly applied during cell exposure. Therefore, following addition of 0.1% SDS, the particles were washed twice with ultrapure water, which reduced agglomeration even further. Reducing the agglomeration of the nanoparticles is important for studying their uptake and in applications that benefit from individual nanoparticles such as diagnostics. In summary, this study demonstrates a simple technique to characterize the extent of nanoparticle agglomeration in solution and visualize nanoparticle (40 nm and larger) uptake and interaction with cells. Additionally, an example application of nanoparticle labeling onto the surface and neurite extensions of murine neuroblastoma cells (N2A) is presented as a potential imaging tool. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Toxicology (Taylor & Francis) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AGGLOMERATION (Materials) KW - ALUMINUM KW - NANOPARTICLES KW - CELL lines KW - MANGANESE KW - CELL culture KW - SILVER KW - LIVER cells KW - RATS as laboratory animals KW - Agglomeration KW - Aluminum KW - Cell Lines KW - Manganese KW - Nanoparticles KW - Silver N1 - Accession Number: 24515455; Skebo, Jeanne E. 1 Grabinski, Christin M. 1 Schrand, Amanda M. 1 Schlager, John J. 1 Hussain, Saber M. 1; Email Address: Saber.Hussain@wpafb.af.mil; Affiliation: 1: Applied Biotechnology Branch, Human Effectiveness Directorate, Air Force Research Laboratory/HEPB, Wright-Patterson Air Force Base, Ohio, USA.; Source Info: Mar/Apr2007, Vol. 26 Issue 2, p135; Subject Term: AGGLOMERATION (Materials); Subject Term: ALUMINUM; Subject Term: NANOPARTICLES; Subject Term: CELL lines; Subject Term: MANGANESE; Subject Term: CELL culture; Subject Term: SILVER; Subject Term: LIVER cells; Subject Term: RATS as laboratory animals; Author-Supplied Keyword: Agglomeration; Author-Supplied Keyword: Aluminum; Author-Supplied Keyword: Cell Lines; Author-Supplied Keyword: Manganese; Author-Supplied Keyword: Nanoparticles; Author-Supplied Keyword: Silver; NAICS/Industry Codes: 212210 Iron Ore Mining; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 7p; Document Type: Article L3 - 10.1080/10915810701226248 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24515455&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mitchel, W. C. AU - Mitchell, William D. AU - Smith, H. E. AU - Landis, G. AU - Smith, S. R. AU - Glaser, E. R. T1 - Compensation mechanism in high purity semi-insulating 4H-SiC. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/03//3/1/2007 VL - 101 IS - 5 M3 - Article SP - 053716 EP - N.Pag PB - American Institute of Physics SN - 00218979 AB - A study of deep levels in high purity semi-insulating 4H-SiC has been made using temperature dependent Hall effect (TDH), thermal and optical admittance spectroscopies, and secondary ion mass spectrometry (SIMS). Thermal activation energies from TDH varied from a low of 0.55 eV to a high of 1.65 eV. All samples studied showed n-type conduction with the Fermi level in the upper half of the band gap. Fits of the TDH data to different charge balance equations and comparison of the fitting results with SIMS measurements indicated that the deep levels are acceptorlike even though they are in the upper half of the band gap. Carrier concentration measurements indicated that the deep levels are present in concentrations in the low 1015 cm-3 range, while SIMS results demonstrate nitrogen and boron concentrations in the low to mid-1015-cm-3 range. The results suggest that compensation in this material is a complex process involving multiple deep levels. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MASS (Physics) KW - SECONDARY ion mass spectrometry KW - SPECTRUM analysis KW - MASS spectrometry KW - NITROGEN KW - BORON KW - INSULATING materials N1 - Accession Number: 24422142; Mitchel, W. C. 1 Mitchell, William D. 1 Smith, H. E. 2 Landis, G. 2 Smith, S. R. 2 Glaser, E. R. 3; Affiliation: 1: Air Force Research Laboratory, AFRL/MLPS, Wright-Patterson AFB, Ohio 45433-7707 2: University of Dayton Research Institute, 3000 College Park, Dayton, Ohio 45469 3: Naval Research Laboratory, Washington, District of Columbia 20375; Source Info: 3/1/2007, Vol. 101 Issue 5, p053716; Subject Term: MASS (Physics); Subject Term: SECONDARY ion mass spectrometry; Subject Term: SPECTRUM analysis; Subject Term: MASS spectrometry; Subject Term: NITROGEN; Subject Term: BORON; Subject Term: INSULATING materials; NAICS/Industry Codes: 238310 Drywall and Insulation Contractors; NAICS/Industry Codes: 326290 Other rubber product manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 7p; Illustrations: 2 Charts, 11 Graphs; Document Type: Article L3 - 10.1063/1.2437677 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24422142&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Burke, William J. AU - Huang, Cheryl Y. AU - Marcos, Frank A. AU - Wise, John O. T1 - Interplanetary control of thermospheric densities during large magnetic storms JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2007/03// VL - 69 IS - 3 M3 - Article SP - 279 EP - 287 SN - 13646826 AB - Abstract: During the main phase of large magnetic storms significant energy can be deposited in the ionosphere but produce no commensurate magnetic perturbations on the ground. Consequently, models designed to predict and specify thermospheric energy budgets based on ground magnetic data are negatively impacted. To quantify these effects we compare thermospheric densities predicted by the MSIS model with those inferred from accelerometer measurements by the Gravity Recovery and Climate Experiment (GRACE) satellites during two magnetic storm periods in 2004. Although predictions and measurements are in substantial agreement during quiet times, the model significantly underpredicts densities during storms. Also, the model''s maxima occur several hours after observed stormtime peaks. We show that polar cap potentials and magnetospheric electric fields derived from interplanetary parameters measured by the Advanced Composition Explorer satellite are roughly proportional to neutral densities observed by GRACE with lead times of ∼4h. Finally, ion drift meter data from Defense Meteorological Satellite Program spacecraft suggest that unpredicted positive and negative spikes found in high latitude accelerometer data reflect encounters with strong head and tail thermospheric winds driven by anti-sunward convecting plasma. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GEOMAGNETISM KW - UPPER atmosphere KW - ARTIFICIAL satellites in telecommunication KW - ELECTROMAGNETIC fields KW - Electric fields KW - Forecasting KW - Ionosphere-atmosphere interactions KW - Magnetic storms KW - Thermosphere density distribution N1 - Accession Number: 24269290; Burke, William J.; Email Address: william.burke2@hanscom.af.mil Huang, Cheryl Y. 1 Marcos, Frank A. 1 Wise, John O. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA 01731-3010, USA; Source Info: Mar2007, Vol. 69 Issue 3, p279; Subject Term: GEOMAGNETISM; Subject Term: UPPER atmosphere; Subject Term: ARTIFICIAL satellites in telecommunication; Subject Term: ELECTROMAGNETIC fields; Author-Supplied Keyword: Electric fields; Author-Supplied Keyword: Forecasting; Author-Supplied Keyword: Ionosphere-atmosphere interactions; Author-Supplied Keyword: Magnetic storms; Author-Supplied Keyword: Thermosphere density distribution; NAICS/Industry Codes: 517410 Satellite Telecommunications; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jastp.2006.05.027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24269290&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Foster, J.C. AU - Rideout, W. AU - Sandel, B. AU - Forrester, W.T. AU - Rich, F.J. T1 - On the relationship of SAPS to storm-enhanced density JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2007/03// VL - 69 IS - 3 M3 - Article SP - 303 EP - 313 SN - 13646826 AB - Abstract: We use magnetic field-aligned mapping between the ionosphere and the magnetosphere to intercompare ground-based observations of storm enhanced density (SED), and plasmasphere drainage plumes imaged from space by the IMAGE EUV imager, with the enhanced inner-magnetosphere/ionosphere SAPS electric field which develops during large storms. We find that the inner edge of the SAPS electric field overlaps the erosion plume and that plume material is carried sunward in the SAPS overlap region. The two phenomena, SED in the ionosphere and the erosion plume at magnetospheric heights, define a common trajectory for sunward-propagating cold plasma fluxes in the midnight—dusk–postnoon sector. The SAPS channel at ionospheric heights and its projection into the equatorial plane serve to define the sharp outer boundary of the erosion plume. The SAPS electric field abuts and overlaps both the plasmasphere boundary layer and the plasmasphere erosion plume from pre-midnight through post-noon local times. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETOSPHERE KW - ELECTROMAGNETIC fields KW - UPPER atmosphere KW - NATURAL disasters KW - Electric field KW - Ionosphere KW - M-I coupling KW - Plasmasphere KW - Subauroral N1 - Accession Number: 24269292; Foster, J.C. 1; Email Address: jfoster@haystack.mit.edu Rideout, W. 1 Sandel, B. 2 Forrester, W.T. 2 Rich, F.J. 3; Affiliation: 1: Massachusetts Institute of Technology, Haystack Observatory, Westford, MA, USA 2: Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA 3: Air Force Research Laboratory, Hanscom AFB, Ma,USA; Source Info: Mar2007, Vol. 69 Issue 3, p303; Subject Term: MAGNETOSPHERE; Subject Term: ELECTROMAGNETIC fields; Subject Term: UPPER atmosphere; Subject Term: NATURAL disasters; Author-Supplied Keyword: Electric field; Author-Supplied Keyword: Ionosphere; Author-Supplied Keyword: M-I coupling; Author-Supplied Keyword: Plasmasphere; Author-Supplied Keyword: Subauroral; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.jastp.2006.07.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24269292&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhupanska, Olesya I. AU - Sierakowski, Robert L. T1 - Effects of an Electromagnetic Field on the Mechanical Response of Composites. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2007/03// VL - 41 IS - 5 M3 - Article SP - 633 EP - 652 SN - 00219983 AB - The existing experimental evidence suggests that exposure of a composite material to an electromagnetic field leads to changes in the material's strength and resistance to delamination. In this work, the mechanical response of transversely isotropic graphite/epoxy composite plates in the presence of an electromagnetic field is studied. The interacting effects of the in-plane steady and slowly varying electric current, external magnetic field, and mechanical load as well as the effects of mechanical and electrical anisotropies are investigated. It is shown that an electromagnetic field may significantly enhance or reduce the deformed state of the composite plate depending on the direction of its application and its intensity. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC fields KW - COMPOSITE materials KW - POLYMERS KW - ELECTRIC currents KW - ANISOTROPY KW - EPOXY resins KW - anisotropic plate KW - electric current KW - electro-magneto-mechanical coupling KW - electromagnetic field KW - polymer matrix composites N1 - Accession Number: 24469341; Zhupanska, Olesya I. 1; Email Address: zhupanska@gerc.eng.ufl.edu Sierakowski, Robert L. 2; Affiliation: 1: University of Florida, REEF, 1350 N. Poquito Rd., Shalimar, FL 32579, USA 2: Air Force Research Laboratory, 101 West Eglin Blvd., Suite 105, Eglin AFB, FL 32542, USA; Source Info: Mar2007, Vol. 41 Issue 5, p633; Subject Term: ELECTROMAGNETIC fields; Subject Term: COMPOSITE materials; Subject Term: POLYMERS; Subject Term: ELECTRIC currents; Subject Term: ANISOTROPY; Subject Term: EPOXY resins; Author-Supplied Keyword: anisotropic plate; Author-Supplied Keyword: electric current; Author-Supplied Keyword: electro-magneto-mechanical coupling; Author-Supplied Keyword: electromagnetic field; Author-Supplied Keyword: polymer matrix composites; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; Number of Pages: 20p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1177/0021998306065293 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24469341&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yudong Zhang AU - Sang Lee AU - Mitra Yoonessi AU - Hossein Toghiani AU - Pittman, Charles T1 - Phenolic Resin/Octa(aminophenyl)-T-Polyhedral Oligomeric Silsesquioxane (POSS) Hybrid Nanocomposites: Synthesis, Morphology, Thermal and Mechanical Properties. JO - Journal of Inorganic & Organometallic Polymers & Materials JF - Journal of Inorganic & Organometallic Polymers & Materials Y1 - 2007/03// VL - 17 IS - 1 M3 - Article SP - 159 EP - 171 SN - 15741443 AB - Octa(aminophenyl)-T-polyhedral silsesquioxane, 1, can serve as a cross-linking agent for organic polymeric resins. Amino functional groups of 1 can form chemical bonds or hydrogen-bonds to appropriate matrix polymers or resins. Various resole phenolic resin/ 1 nanocomposites (0, 1, 3, 6, and 12 wt% 1) were prepared. Hydrogen bonding between phenolic hydroxyls and the amino groups of 1 in these nanocomposites were investigated by FT-IR. The aggregation morphologies of 1 within these samples were examined using SEM, TEM, and Wide Angle X-ray Diffraction (WAXD) studies. Small quasispherical nanometer-sized POSS particles which were further aggregated into clusters, like individual grapes in a bunch, formed into phase-separated domains as large as 400 nm in diameter as the loading of 1 increased. These particles exhibited a broad 2 θ = 5.8° WAXD peak indicating the presence of some crystalline order within the nanoparticles of 1 making up the aggregates. This corresponds to an average crystalline plane lattice distance of 17.5 Å. However, extraction of the finely powdered nanocomposites by refluxing THF failed to remove 1 indicating the vast majority of 1 must be chemically bound. Thus, the aggregates must have resin within their structure. The storage modulus ( E') in both the glassy and rubbery regions, thermal stability, and glass transition temperature of the composites were improved by 1 wt% 1. However, at high loadings of 1, these properties gradually decreased. Surface extractions by THF removed only a portion of the 1 in the surface regions based on X-EDS analyses for Si, suggesting that a portion of 1 might chemically bond into the phenolic resin matrix during the cure. As the loading of 1 increased, the content of 1 at specific surface locations gradually tends to increase and confirmed excellent dispersion of 1 in the micron size-scale at all locations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Inorganic & Organometallic Polymers & Materials is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHENOLIC resins KW - RESEARCH KW - NANOCOMPOSITE materials KW - CHEMICAL bonds KW - HYDROGEN bonding KW - NANOPARTICLES KW - DMA KW - Nanocomposites KW - Octa(aminophenyl)-T8-POSS KW - Phenolic resins KW - POSS (polyhedral oligomeric silsesqueoxanes) KW - SEM KW - TEM KW - WAXD KW - X-EDS N1 - Accession Number: 59993869; Yudong Zhang 1 Sang Lee 1 Mitra Yoonessi 2 Hossein Toghiani 3 Pittman, Charles 1; Email Address: CPittman@ra.msstate.edu; Affiliation: 1: Department of Chemistry , Mississippi State University , Starkville 39762 USA 2: Air Force Research Laboratory , 2941 p Street, Bldg. 654, Wright-Patterson AFB 45433 Dayton USA 3: Dave C Swalm School of Chemical Engineering , Mississippi State University , Starkville 39762 USA; Source Info: Mar2007, Vol. 17 Issue 1, p159; Subject Term: PHENOLIC resins; Subject Term: RESEARCH; Subject Term: NANOCOMPOSITE materials; Subject Term: CHEMICAL bonds; Subject Term: HYDROGEN bonding; Subject Term: NANOPARTICLES; Author-Supplied Keyword: DMA; Author-Supplied Keyword: Nanocomposites; Author-Supplied Keyword: Octa(aminophenyl)-T8-POSS; Author-Supplied Keyword: Phenolic resins; Author-Supplied Keyword: POSS (polyhedral oligomeric silsesqueoxanes); Author-Supplied Keyword: SEM; Author-Supplied Keyword: TEM; Author-Supplied Keyword: WAXD; Author-Supplied Keyword: X-EDS; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1007/s10904-006-9074-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=59993869&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lapovok, R. AU - McKenzie, P. W. J. AU - Thomson, P. F. AU - Semiatin, S. L. T1 - Processing and properties of ultrafine-grain aluminum alloy 5005 sheet. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2007/03// VL - 42 IS - 5 M3 - Article SP - 1649 EP - 1659 PB - Springer Science & Business Media B.V. SN - 00222461 AB - The potential of ECAP sheet machine build in Monash University to refine the grain size, enhance mechanical properties, and improve deep drawability of the sheet was investigated for a representative aluminum alloy, AA5005. The annealed sheet was subjected to one, two, or four ECAP passes through 90º using route A or route C followed by annealing at 400 °C for 15 min. It was established that only one ECAP pass is required to obtain a significant improvement in both normal and planar anisotropy. A subsequent annealing enabled the recovery of ductility of the material lost during ECAP while maintaining the improved plastic anisotropy. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM alloys KW - SHEET-metal KW - METALS -- Mechanical properties KW - ANISOTROPY KW - DUCTILITY KW - MELBOURNE (Vic.) KW - VICTORIA KW - MONASH University N1 - Accession Number: 24207363; Lapovok, R. 1; Email Address: rimma.lapovok@spme.monash.edu.au McKenzie, P. W. J. 1 Thomson, P. F. 1 Semiatin, S. L. 2; Affiliation: 1: Materials Engineering Department, Monash University, Clayton, Victoria 3800, Australia 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Mar2007, Vol. 42 Issue 5, p1649; Subject Term: ALUMINUM alloys; Subject Term: SHEET-metal; Subject Term: METALS -- Mechanical properties; Subject Term: ANISOTROPY; Subject Term: DUCTILITY; Subject Term: MELBOURNE (Vic.); Subject Term: VICTORIA; Company/Entity: MONASH University; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; Number of Pages: 11p; Illustrations: 1 Color Photograph, 1 Black and White Photograph, 8 Diagrams, 5 Charts, 3 Graphs; Document Type: Article L3 - 10.1007/s10853-006-0967-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24207363&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reiman, Robert W. AU - Atchley, Daniel H. AU - Voorhees, Kent J. T1 - Indirect detection of Bacillus anthracis using real-time PCR to detect amplified gamma phage DNA JO - Journal of Microbiological Methods JF - Journal of Microbiological Methods Y1 - 2007/03// VL - 68 IS - 3 M3 - Article SP - 651 EP - 653 SN - 01677012 AB - Abstract: Typical real-time PCR methods used to identify Bacillus anthracis do not distinguish between viable and non-viable spores, which would be critical in any first response and remediation scenarios. This study combined both real-time PCR, using primers specifically designed for gamma phage, with the highly specific gamma phage amplification into one simple assay to indirectly detect Bacillus anthracis. Since the amplification of gamma phage only occurs in the presence of a suitable host, the detection of increasing concentrations of progeny gamma phage DNA using real-time PCR implies the presence of viable Bacillus anthracis cells. This method detected a starting Bacillus anthracis concentration of 207 cfu/mL, equivalent to less than one cell in 20 μL, in less than 5 h. [Copyright &y& Elsevier] AB - Copyright of Journal of Microbiological Methods is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BACILLUS anthracis KW - POLYMERASE chain reaction KW - NUCLEIC acids KW - GENE amplification KW - Bacteriophage amplification KW - Detect Bacillus anthracis KW - Gamma phage KW - Gamma phage primers KW - Real-time PCR KW - RT-PCR N1 - Accession Number: 24045567; Reiman, Robert W. 1; Email Address: rreiman@mines.edu Atchley, Daniel H. 2 Voorhees, Kent J. 1; Affiliation: 1: Department of Chemistry and Geochemistry, Colorado School of Mines, Golden, CO, USA 2: Department of Biology, United States Air Force Academy, USAFA, CO, USA; Source Info: Mar2007, Vol. 68 Issue 3, p651; Subject Term: BACILLUS anthracis; Subject Term: POLYMERASE chain reaction; Subject Term: NUCLEIC acids; Subject Term: GENE amplification; Author-Supplied Keyword: Bacteriophage amplification; Author-Supplied Keyword: Detect Bacillus anthracis; Author-Supplied Keyword: Gamma phage; Author-Supplied Keyword: Gamma phage primers; Author-Supplied Keyword: Real-time PCR; Author-Supplied Keyword: RT-PCR; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.mimet.2006.11.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24045567&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Case, Simon AU - Horie, Yasuyuki T1 - Discrete element simulation of shock wave propagation in polycrystalline copper JO - Journal of the Mechanics & Physics of Solids JF - Journal of the Mechanics & Physics of Solids Y1 - 2007/03// VL - 55 IS - 3 M3 - Article SP - 589 EP - 614 SN - 00225096 AB - Abstract: The implementation of the characteristic of compressive plasticity into the Discrete Element Code, DM2, while maintaining its quasi-molecular scheme, is described. The code is used to simulate the shock compression of polycrystalline copper at 3.35 and 11.0GPa. The model polycrystal has a normal distribution of grain sizes, with mean diameter 14μm, and three distinct grain orientations are permitted with respect to the shock direction; 〈100〉, 〈110〉, and 〈111〉. Particle velocity dispersion (PVD) is present in the shock-induced flow, attaining its maximum magnitude at the plastic wave rise. PVD normalised to the average particle velocity of and are yielded for the 3.35 and 11.0GPa shocks, respectively, and are of the same order as those seen in the experiment. Non-planar elastic and plastic wave fronts are present, the distribution in shock front position increasing with propagation distance. The rate of increase of the spread in shock front positions is found to be significantly smaller than that seen in probabilistic calculations on nickel polycrystals, and this difference is attributed, in the main, to grain interaction. Reflections at free surfaces yield a region of tension near to the target free surface. Due to the dispersive nature of the shock particle velocity and the non-planarity of the shock front, the tensile pressure is distributed. This may have implications for the spall strength, which are discussed. Simulations reveal a transient shear stress distribution behind the shock front. Such a distribution agrees with that put forward by Lipkin and Asay to explain the quasi-elastic reloading phenomenon. Simulation of reloading shocks show that the shear stress distribution can give rise to quasi-elastic reloading on the grain scale. [Copyright &y& Elsevier] AB - Copyright of Journal of the Mechanics & Physics of Solids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHOCK waves KW - POLYCRYSTALS KW - COPPER KW - SHOCK (Mechanics) KW - Elastic–plastic material KW - Microstructures KW - Numerical algorithms KW - Polycrystalline material KW - Shock waves N1 - Accession Number: 23742764; Case, Simon 1; Email Address: simon.case@awe.co.uk Horie, Yasuyuki 2; Affiliation: 1: Atomic Weapons Establishment, Reading, RG7 4PR, UK 2: Air Force Research Laboratory, Eglin AFB, FL, USA; Source Info: Mar2007, Vol. 55 Issue 3, p589; Subject Term: SHOCK waves; Subject Term: POLYCRYSTALS; Subject Term: COPPER; Subject Term: SHOCK (Mechanics); Author-Supplied Keyword: Elastic–plastic material; Author-Supplied Keyword: Microstructures; Author-Supplied Keyword: Numerical algorithms; Author-Supplied Keyword: Polycrystalline material; Author-Supplied Keyword: Shock waves; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; Number of Pages: 26p; Document Type: Article L3 - 10.1016/j.jmps.2006.08.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23742764&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sardar, Dhiraj K. AU - Swanland, Guang-Yin AU - Yow, Raylon M. AU - Thomas, Robert J. AU - Tsin, Andrew T.C. T1 - Optical properties of ocular tissues in the near infrared region. JO - Lasers in Medical Science JF - Lasers in Medical Science Y1 - 2007/03// VL - 22 IS - 1 M3 - Article SP - 46 EP - 52 SN - 02688921 AB - Near infrared characterization of optical properties of aqueous humor and vitreous humor of healthy human and bovine eyes has been performed. The indices of refraction ( n) of these ocular tissues were determined using a Michelson interferometer. The total diffuse reflection ( R d) and total transmission ( T t) measurements had been taken for individual ocular tissue by using a double-integrating sphere setup and infrared laser diodes. The inverse adding doubling (IAD) computational method based on the diffusion approximation and radiative transport theory was applied to the measured values of n, R d, and T t to calculate the optical absorption and scattering coefficients of the human and bovine ocular tissues. The scattering anisotropy value was determined by iteratively running the IAD method program and a Monte Carlo simulation of light–tissue interaction until the minimum difference in experimental and computed value for T t was realized. A comparison between the optical characterization of human and bovine ocular samples was also made. [ABSTRACT FROM AUTHOR] AB - Copyright of Lasers in Medical Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EYE KW - SIMULATION methods & models KW - REFRACTION (Optics) KW - OPTICS KW - LIGHT -- Scattering KW - Bovine ocular tissues KW - Human ocular tissues KW - Infrared laser wavelengths KW - Optical properties N1 - Accession Number: 24207241; Sardar, Dhiraj K. 1; Email Address: dsardar@utsa.edu Swanland, Guang-Yin 1 Yow, Raylon M. 1 Thomas, Robert J. 2 Tsin, Andrew T.C. 3; Affiliation: 1: Department of Physics and Astronomy, The University of Texas at San Antonio, San Antonio 78249-0697 USA 2: Air Force Research Laboratory, Brooks City-Base 78235-5128 USA 3: Department of Biology, The University of Texas at San Antonio, San Antonio 78249-0662 USA; Source Info: Mar2007, Vol. 22 Issue 1, p46; Subject Term: EYE; Subject Term: SIMULATION methods & models; Subject Term: REFRACTION (Optics); Subject Term: OPTICS; Subject Term: LIGHT -- Scattering; Author-Supplied Keyword: Bovine ocular tissues; Author-Supplied Keyword: Human ocular tissues; Author-Supplied Keyword: Infrared laser wavelengths; Author-Supplied Keyword: Optical properties; Number of Pages: 7p; Illustrations: 1 Diagram, 3 Charts, 1 Graph; Document Type: Article L3 - 10.1007/s10103-006-0421-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24207241&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Siefert, Nicholas S. T1 - Shock velocity in weakly ionized nitrogen, air, and argon. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2007/03// VL - 19 IS - 3 M3 - Article SP - 036102 PB - American Institute of Physics SN - 10706631 AB - The goal of this research was to determine the principal mechanism(s) for the shock velocity increase in weakly ionized gases. This paper reports experimental data on the propagation of spark-generated shock waves (1A new class of energetic ionic liquids based upon 1-amino-3-alkyl-1,2,3-triazolium nitrates (alkyl = methyl, ethyl,n-propyl, 2-propenyl, andn-butyl) has been synthesized and characterized by vibrational spectra, multinuclear NMR, elemental as well as contaminant analyses, and DSC studies. A single crystal X-ray study was carried out for 1-amino-3-methyl-1,2,3-triazolium nitrate and the details will be presented. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Crystallography is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NITRATES KW - VIBRATIONAL spectra KW - X-ray diffraction KW - SPECTRUM analysis N1 - Accession Number: 23650165; Gregory Drake 1 Leslie Hall 2 Tommy Hawkins 2 Joann Larue 2; Affiliation: 1: George Marshall Space Flight Center ER22 Propulsion Research Center Alabama USA Alabama USA 2: Propulsion Directorate, Air Force Research Laboratory, Edwards Air Force Base AFRL/PRSP, Space and Missile Division California 93524 USA California 93524 USA; Source Info: Jan2007, Vol. 37 Issue 1, p15; Subject Term: NITRATES; Subject Term: VIBRATIONAL spectra; Subject Term: X-ray diffraction; Subject Term: SPECTRUM analysis; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23650165&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sandhu, S.S. AU - Fellner, J.P. AU - Brutchen, G.W. T1 - Diffusion-limited model for a lithium/air battery with an organic electrolyte JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2007/01/10/ VL - 164 IS - 1 M3 - Article SP - 365 EP - 371 SN - 03787753 AB - Abstract: A diffusion-limited transient mathematical model for a lithium/air cell, with the air cathode pores flooded with an organic electrolyte, has been developed. During cell discharge, the cathode pore radius profile is reflective of the distribution of the lithium peroxide product in the cathode. The cathode pore radius profile has been predicted as a function of time, current density, oxygen gas pressure, and cathode thickness for an assumed initial porosity and average cathode pore size. Transient concentration profiles of the dissolved oxygen in the electrolyte were also determined. Capacities of the lithium/air cell were predicted and compared favorably with literature experimental results. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LITHIUM cells KW - ELECTROLYTES KW - CATHODES KW - PEROXIDES KW - Diffusion-limited KW - Lithium/air cell KW - Organic electrolyte KW - Transient model N1 - Accession Number: 23515788; Sandhu, S.S. 1; Email Address: Sarwan.Sandhu@notes.udayton.edu Fellner, J.P. 2 Brutchen, G.W. 1; Affiliation: 1: Department of Chemical and Materials Engineering, University of Dayton, 300 College Park, Dayton, OH 45469-0246, United States 2: Air Force Research Laboratory, Propulsion Directorate, Plans and Analysis Branch, 1950 Fifth Street, Wright-Patterson AFB, OH 45433-7251, United States; Source Info: Jan2007, Vol. 164 Issue 1, p365; Subject Term: LITHIUM cells; Subject Term: ELECTROLYTES; Subject Term: CATHODES; Subject Term: PEROXIDES; Author-Supplied Keyword: Diffusion-limited; Author-Supplied Keyword: Lithium/air cell; Author-Supplied Keyword: Organic electrolyte; Author-Supplied Keyword: Transient model; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jpowsour.2006.09.099 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23515788&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Joshua A. Hagen AU - Wei-Xin Li AU - Hans Spaeth AU - James G. Grote AU - Andrew J. Steckl T1 - Molecular Beam Deposition of DNA Nanometer Films. JO - Nano Letters JF - Nano Letters Y1 - 2007/01/10/ VL - 7 IS - 1 M3 - Article SP - 133 EP - 137 SN - 15306984 AB - The development of novel photonic devices which incorporate biological materials is strongly tied to the development of thin film forming processes. Solution-based (“wet”) processes when used with biomaterials in device fabrication suffer from dissolution of underlying layers, incompatibility with clean environment, inconsistent film properties, etc. We have investigated ultra-high-vacuum molecular beam deposition of surfactant-modified deoxyribonucleic acid (DNA). We have obtained effective deposition rates of ∼0.1−1 Å/s, enabling reproducible and controllable deposition of nanometer-scale films. [ABSTRACT FROM AUTHOR] AB - Copyright of Nano Letters is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR beams KW - MOLECULAR dynamics KW - SOLID state electronics KW - THICK films N1 - Accession Number: 23926941; Joshua A. Hagen 1 Wei-Xin Li 1 Hans Spaeth 1 James G. Grote 1 Andrew J. Steckl 1; Affiliation: 1: Nanoelectronics Laboratory, University of Cincinnati, Cincinnati, Ohio 45221-0030,and U.S. Air Force Research Laboratory, Dayton, Ohio 45324; Source Info: Jan2007, Vol. 7 Issue 1, p133; Subject Term: MOLECULAR beams; Subject Term: MOLECULAR dynamics; Subject Term: SOLID state electronics; Subject Term: THICK films; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23926941&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schneider, Stefan AU - Gerken, Michael AU - Haiges, Ralf AU - Schroer, Thorsten AU - Boatz, Jerry A. AU - Dixon, David A. AU - Grant, Daniel J. AU - Christe, Karl O. T1 - Synthesis and Characterization of Silyldichloramines, Their Reactions with F- Ions, Instability of N2Cl2 and NCl-2, and Formation of NCI3. JO - Inorganic Chemistry JF - Inorganic Chemistry Y1 - 2007/01/08/ VL - 46 IS - 1 M3 - Article SP - 93 EP - 102 SN - 00201669 AB - Only two silyldichloramines, (C6H5)3SiNCl2 and (CH3)3SiNCl2, have been reported in the literature. The synthesis of the former was successfully repeated, and its structure was established by single-crystal X-ray diffraction and vibrational spectroscopy. Attempts to prepare (CH3)3SiNCl2 were unsuccessful; however, a new trialkylsilyldichloramine, t-BuMe2Si-NCl2, was prepared and characterized by Raman and multinuclear NMR spectroscopy. The reaction of t-BuMe2SiNCl2 with (CH3)4+NF in CHF3 solution at -78 °C, followed by removal of all volatile products at -30 °C, produced the expected t-BuMe2SiF byproduct and a white solid consisting of NCl3 absorbed on Me4NCI. The NCl3 could be reversibly desorbed from the substrate and was identified as a neat liquid at room temperature by Raman spectroscopy. The observed final reaction products are consistent with the formation of an unstable N(CH3)4+NCl2- intermediate which decomposes to N(CH3)4+Cl- and NCI molecules which can dimerize to N2Cl2. Theoretical calculations confirm that NCl2- can readily lose Cl- and that N2Cl2 also possesses a low barrier toward loss of N2 to give chlorine atoms and, thus, can account for the formation of NCl3. [ABSTRACT FROM AUTHOR] AB - Copyright of Inorganic Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN spectroscopy KW - NUCLEAR magnetic resonance KW - CHLORINE KW - MOLECULES KW - IONS N1 - Accession Number: 23794753; Schneider, Stefan 1,2; Email Address: stefan.schneider@edwards.af.mil Gerken, Michael 1,3 Haiges, Ralf 1 Schroer, Thorsten 1,2 Boatz, Jerry A. 4 Dixon, David A. 5 Grant, Daniel J. 5 Christe, Karl O. 1; Affiliation: 1: Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, California 90089 2: Air Force Research Laboratory, California 93524 3: Department of Chemistry and Biochemistry, The University of Lethbridge, Canada 4: Air Force Research Laboratory, Edwards Air Force Base, California 93524 5: Department of Chemistry, University of Alabama, Tuscaloosa, Alabama 35487-0336; Source Info: 1/8/2007, Vol. 46 Issue 1, p93; Subject Term: RAMAN spectroscopy; Subject Term: NUCLEAR magnetic resonance; Subject Term: CHLORINE; Subject Term: MOLECULES; Subject Term: IONS; NAICS/Industry Codes: 325181 Alkali and chlorine manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 10p; Illustrations: 11 Charts, 3 Graphs, 2 Maps; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23794753&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Battula, Arvind AU - Yalin Lu AU - Knize, R. J. AU - Reinhardt, Kitt AU - Shaochen Chen T1 - Extraordinary Transmission and Enhanced Emission with Metallic Gratings Having Converging-Diverging Channels. JO - Active & Passive Electronic Components JF - Active & Passive Electronic Components Y1 - 2007/01/02/ VL - 2007 M3 - Article SP - 1 EP - 8 PB - Hindawi Publishing Corporation SN - 08827516 AB - Transmission metallic gratings having the shape of converging-diverging channel (CDC) give an extra degree of freedom to exhibit enhanced transmission resonances. By varying the gap size at the throat of CDC, the spectral locations of the transmission resonance bands can be shifted close to each other and have high transmittance in a very narrow energy band. Hence, the CDC shape metallic gratings can lead to almost perfect transmittance for any desired wavelength by carefully optimizing the metallic material, gap at the throat of CDC, and grating parameters. In addition, a cavity surrounded by the CDC shaped metallic grating and a one-dimensional (1D) photonic crystal (PhC) can lead to an enhanced emission with properties similar to a laser. The large coherence length of the emission is achieved by exploiting the coherence properties of the surface waves on the gratings and PhC. The new multilayer structure can attain the spectral and directional control of emission with only p-polarization. The resonance condition inside the cavity is extremely sensitive to the wavelength, which would then lead to high emission in a very narrow wavelength band. Such simple 1D multilayer structure should be easy to fabricate and have applications in photonic circuits, thermophotovoltaics, and potentially in energy efficient incandescent sources. [ABSTRACT FROM AUTHOR] AB - Copyright of Active & Passive Electronic Components is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUID dynamics KW - ANALYSIS of variance KW - ELECTRONIC circuit design KW - RESONATORS KW - SPECTRUM analysis KW - TERAHERTZ technology KW - PLASMONS (Physics) N1 - Accession Number: 36865572; Battula, Arvind 1 Yalin Lu 2 Knize, R. J. 2 Reinhardt, Kitt 3 Shaochen Chen 1; Affiliation: 1: Department of Mechanical Engineering, Center for Nano and Molecular Science and Technology, University of Texas, Austin, TX 78712, USA 2: Physics Department, Laser Optics Research Center, USAF Academy, CO 80840, USA 3: Air Force Research Laboratory, AFOSR/NE, 875 North Randolph Street, Suite 326, Arlington, VA 22203, USA; Source Info: Jan2007, Vol. 2007, Special section p1; Subject Term: FLUID dynamics; Subject Term: ANALYSIS of variance; Subject Term: ELECTRONIC circuit design; Subject Term: RESONATORS; Subject Term: SPECTRUM analysis; Subject Term: TERAHERTZ technology; Subject Term: PLASMONS (Physics); Number of Pages: 8p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1155/2007/24084 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36865572&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yalin Lu AU - Weili Zhang AU - Min Qiu T1 - Metamaterials, Plasmonics, and THz Frequency Photonic Components. JO - Active & Passive Electronic Components JF - Active & Passive Electronic Components Y1 - 2007/01/02/ VL - 2007 M3 - Article SP - 1 EP - 2 PB - Hindawi Publishing Corporation SN - 08827516 AB - The article discusses various reports published within the issue including plasmonics, manipulating light at the subwavelength scale, of microstructure variations on macroscopic terahertz metafilm properties, and compact optical waveguides based on hybrid index and surface-plasmon-polariton guidance mechanisms. KW - TERAHERTZ technology KW - OPTICAL waveguides KW - PLASMONS (Physics) KW - POLARITONS N1 - Accession Number: 36865568; Yalin Lu 1 Weili Zhang 2 Min Qiu 3; Affiliation: 1: Department of Physics, US Air Force Academy, Colorado Springs, CO 80840, USA 2: School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, OK 74078-5032, USA 3: Department of Microelectronics and Applied Physics, Royal Institute of Technology (KTH), Electrum 229, 164 40 Kista, Sweden; Source Info: Jan2007, Vol. 2007, p1; Subject Term: TERAHERTZ technology; Subject Term: OPTICAL waveguides; Subject Term: PLASMONS (Physics); Subject Term: POLARITONS; Number of Pages: 2p; Document Type: Article L3 - 10.1155/2007/80839 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=36865568&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cawkwell, M.J. AU - Woodward, C. AU - Nguyen-Manh, D. AU - Pettifor, D.G. AU - Vitek, V. T1 - Atomistic study of athermal cross-slip and its impact on the mechanical properties of iridium JO - Acta Materialia JF - Acta Materialia Y1 - 2007/01// VL - 55 IS - 1 M3 - Article SP - 161 EP - 169 SN - 13596454 AB - Abstract: The mechanical behaviour of the face-centred cubic metal iridium is exceptional in that it undergoes brittle transgranular or intergranular fracture after extensive plastic deformation. We present a model for the origin of this behaviour that is based on the features of the cores of screw dislocations specific to this transition metal. Atomistic simulations performed using a bond-order potential find a planar core structure that corresponds to dissociation into Shockley partials and a metastable, non-planar core spread into two {111} planes. Stress-induced transformations between the two core configurations were studied and form the basis for a mechanism for cross-slip that requires neither thermal activation nor full constriction of the partials. The associated high rate of cross-slip leads to extremely intense forest hardening and a dislocation density that increases precipitously with plastic strain to the extent that brittle cleavage is a natural consequence. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IRIDIUM KW - BRITTLENESS KW - DISLOCATIONS in metals KW - SIMULATION methods & models KW - DEFORMATIONS (Mechanics) KW - Dislocation theory KW - Fracture KW - Modelling KW - Plastic deformation KW - Platinum group N1 - Accession Number: 23282671; Cawkwell, M.J. 1; Email Address: cawkwell@lanl.gov Woodward, C. 2 Nguyen-Manh, D. 3 Pettifor, D.G. 4 Vitek, V. 1; Affiliation: 1: Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, PA 19104-6202, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7817, USA 3: EURATOM/UKAEA Fusion Association, Culham Science Centre, Abingdon OX14 3DB, UK 4: Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK; Source Info: Jan2007, Vol. 55 Issue 1, p161; Subject Term: IRIDIUM; Subject Term: BRITTLENESS; Subject Term: DISLOCATIONS in metals; Subject Term: SIMULATION methods & models; Subject Term: DEFORMATIONS (Mechanics); Author-Supplied Keyword: Dislocation theory; Author-Supplied Keyword: Fracture; Author-Supplied Keyword: Modelling; Author-Supplied Keyword: Plastic deformation; Author-Supplied Keyword: Platinum group; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.actamat.2006.07.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23282671&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Shea, M.A. T1 - Editorial comment JO - Advances in Space Research JF - Advances in Space Research Y1 - 2007/01// VL - 39 IS - 1 M3 - Editorial SP - 1 EP - 2 SN - 02731177 N1 - Accession Number: 24250057; Shea, M.A. 1; Email Address: sssrc@msn.com; Affiliation: 1: (Emeritus) Air Force Research Laboratory (VSBX), Hanscom AFB, Bedford, MA 01731-3010, United States; Source Info: Jan2007, Vol. 39 Issue 1, p1; Number of Pages: 2p; Document Type: Editorial L3 - 10.1016/j.asr.2007.02.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24250057&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, Jaladanki N. AU - Lan Liu AU - Zou, Tongtong AU - Marasa, Bernard S. AU - Boneva, Dessy AU - Wang, Shelley R. AU - Malone, Debra L. AU - Turner, Douglas J. AU - Wang, Jian-Ying T1 - Polyamines are required for phospholipase C--γ1 expression promoting intestinal epithelial restitution after wounding. JO - American Journal of Physiology: Gastrointestinal & Liver Physiology JF - American Journal of Physiology: Gastrointestinal & Liver Physiology Y1 - 2007/01// VL - 55 IS - 1 M3 - Article SP - G335 EP - G343 SN - 01931857 AB - Intestinal mucosal restitution occurs by epithelial cell migration, rather than by proliferation, to reseal superficial wounds after injury. Polyamines are essential for the stimulation of intestinal epithelial cell (IEC) migration during restitution in association with their ability to regulate Ca2+ homeostasis, but the exact mechanism by which polyamines induce cytosolic free Ca2+ concentration ([Ca2+]cyt) remains unclear. Phospholipase C (PLC)-γ1 catalyzes the formation of inositol (1,4,5)-trisphosphate (IP3), which is implicated in the regulation of [Ca2+]cyt by modulating Ca2+ store mobilization and Ca2+ influx. The present study tested the hypothesis that polyamines are involved in PLC-γ1 activity, regulating [Ca2+]cyt and cell migration after wounding. Depletion of cellular polyamines by α-difluoromethylomithine inhibited PLC-γ1 expression in differentiated IECs (stable Cdx2-transfected IEC-6 cells), as indicated by substantial decreases in levels of PLC-γ1 mRNA and protein and its enzyme product IP3. Polyamine-deficient cells also displayed decreased [Ca2+Icyt and inhibited cell migration. Decreased levels of PLC-γ1 by treatment with U-73122 or transfection with short interfering RNA specifically targeting PLC-γ1 also decreased IP3, reduced resting [Ca2+]cyt and Ca2+ influx after store depletion, and suppressed cell migration in control cells. In contrast, stimulation of PLC-γ1 by 2,4,6-trimethyl-N-(meta-3-trifluoromethylphenyl)-benzenesulfonamide induced IP3, increased [Ca2+]cyt, and promoted cell migration in polyamine-deficient cells. These results indicate that polyamines are absolutely required for PLC-γ1 expression in IECs and that polyamine-mediated PLC-γ1 signaling stimulates cell migration during restitution as a result of increased [Ca2+]cyt. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Physiology: Gastrointestinal & Liver Physiology is the property of American Physiological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYAMINES KW - ALIPHATIC compounds KW - EPITHELIAL cells KW - PHOSPHOLIPASES KW - ESTERASES KW - INTESTINAL mucosa KW - Ca2+ influx KW - Cdx2 gene KW - cell migration; capacitative Ca2+ entry KW - early mucosal repair KW - intestinal epithelium KW - mucosal injury N1 - Accession Number: 23794820; Rao, Jaladanki N. 1,2 Lan Liu 1,2 Zou, Tongtong 1,2 Marasa, Bernard S. 1,3 Boneva, Dessy 1 Wang, Shelley R. 2 Malone, Debra L. 1,4 Turner, Douglas J. 1,2 Wang, Jian-Ying 1,2,3; Email Address: jwang@smail.umaryland.edu; Affiliation: 1: Cell Biology Group, Department of Surgery, University of Maryland School of Medicine, Baltimore 2: Baltimore Veterans Affairs Medical Center, Baltimore 3: Department of Pathology, University of Maryland School of Medicine, Baltimore 4: Medical Service, United States Air Force, Bethesda, Maryland; Source Info: Jan2007, Vol. 55 Issue 1, pG335; Subject Term: POLYAMINES; Subject Term: ALIPHATIC compounds; Subject Term: EPITHELIAL cells; Subject Term: PHOSPHOLIPASES; Subject Term: ESTERASES; Subject Term: INTESTINAL mucosa; Author-Supplied Keyword: Ca2+ influx; Author-Supplied Keyword: Cdx2 gene; Author-Supplied Keyword: cell migration; capacitative Ca2+ entry; Author-Supplied Keyword: early mucosal repair; Author-Supplied Keyword: intestinal epithelium; Author-Supplied Keyword: mucosal injury; Number of Pages: 9p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.11 52/ajpgi.00282.2006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23794820&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stephenson, James A. AU - Staal, Mark A. T1 - An Ethical Decision-Making Model for Operational Psychology. JO - Ethics & Behavior JF - Ethics & Behavior Y1 - 2007/01// VL - 17 IS - 1 M3 - Article SP - 61 EP - 82 PB - Taylor & Francis Ltd SN - 10508422 AB - Operational psychology is an emerging subdiscipline that has enhanced the U.S. military's combat capabilities during the Global War on Terrorism. What makes this subdiscipline unique is its use of psychological principles and skills to improve a commander's decision making as it pertains to conducting combat (or related operations). Due to psychology's expanding role in combat support, psychologists are being confronted with challenges that require the application of their professional ethics in areas in which little if any guidance has been provided. Operational psychologists are at the forefront of this expansion. Accordingly, they need a decision model to assist them in this complex dynamic environment. To this end, this article reviews various decision models and ethical frameworks, selects the most appropriate, and then applies it to the challenges faced by operational psychologists. A naturalistic decision model that integrates rational and intuitive elements is recommended. [ABSTRACT FROM AUTHOR] AB - Copyright of Ethics & Behavior is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MEDICINE & psychology KW - MILITARY administration KW - COMBAT -- Psychological aspects KW - WAR on Terrorism, 2001-2009 KW - PROFESSIONAL ethics KW - UNITED States KW - decision model KW - ethics KW - military psychology N1 - Accession Number: 25298493; Stephenson, James A. 1 Staal, Mark A. 2; Email Address: mark.staal@hotmail.com; Affiliation: 1: 421st Air Base Squadron, United States Air Force, United Kingdom 2: 1st Special Operations Group, United States Air Force, Hurlburt Field, Florida; Source Info: Jan2007, Vol. 17 Issue 1, p61; Subject Term: MEDICINE & psychology; Subject Term: MILITARY administration; Subject Term: COMBAT -- Psychological aspects; Subject Term: WAR on Terrorism, 2001-2009; Subject Term: PROFESSIONAL ethics; Subject Term: UNITED States; Author-Supplied Keyword: decision model; Author-Supplied Keyword: ethics; Author-Supplied Keyword: military psychology; Number of Pages: 22p; Illustrations: 3 Charts; Document Type: Article L3 - 10.1080/10508420701310091 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25298493&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Srinivasan, Rajan AU - Rangaswamy, Muralidhar T1 - Importance Sampling for Characterizing STAP Detectors. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2007/01// VL - 43 IS - 1 M3 - Article SP - 273 EP - 285 SN - 00189251 AB - This paper describes the development of adaptive importance sampling (IS) techniques for estimating false alarm probabilities of detectors that use space-time adaptive processing (STAP) algorithms. Fast simulation using IS methods has been notably successful in the study of conventional constant false alarm rate (CFAR) radar detectors, and in several other applications. The principal objectives here are to examine the viability of using these methods for STAP detectors, develop them into powerful analysis and design algorithms and, in the long term, use them for synthesizing novel detection structures. The adaptive matched filter (AMF) detector has been analyzed successfully using fast simulation. Of two biasing methods considered, one is implemented and shown to yield good results. The important problem of detector threshold determination is also addressed, with matching outcome,. As an illustration of the power of these methods, two variants of the square-law AMF detector that are thought to be robust under heterogeneous clutter conditions have also been successfully investigated. These are the envelope-law and geometric-mean STAP detectors. Their CFAR property is established and performance evaluated. It turns out the variants have detection performances better than those of the AMF detector for training data contaminated by interferers. In summary, the work reported here paves the way for development of advanced estimation techniques that can facilitate design of powerful and robust detection algorithms. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR in speed limit enforcement -- Detection KW - ADAPTIVE signal processing KW - DETECTORS KW - ELECTRONIC systems KW - ELECTRONIC pulse techniques KW - RADIO waves N1 - Accession Number: 25227680; Srinivasan, Rajan 1 Rangaswamy, Muralidhar 2; Email Address: Muralidhar.Rangaswamy@hanscom.af.mil; Affiliation: 1: Telecommunication Engineering Group, University of Twente, PO 217, 7500 AE Enschede, The Netherlands. 2: Air Force Research Laboratory Sensors Directorate, Hanscom AFB, MA.; Source Info: Jan2007, Vol. 43 Issue 1, p273; Subject Term: RADAR in speed limit enforcement -- Detection; Subject Term: ADAPTIVE signal processing; Subject Term: DETECTORS; Subject Term: ELECTRONIC systems; Subject Term: ELECTRONIC pulse techniques; Subject Term: RADIO waves; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25227680&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Linnehan, Robert AU - Brady, David AU - Schindler, John AU - Perlovsky, Leonid AU - Rangaswamy, Muralidhar T1 - On the Design of SAR Apertures using the Cramér-Rao Bound. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2007/01// VL - 43 IS - 1 M3 - Article SP - 344 EP - 355 SN - 00189251 AB - The Cramer-Rao inequality is applied to the likelihood function of the synthetic aperture radar (SAR) scatterer parameter vector to relate the choice of flight path to estimation performance. Estimation error bounds for the scatterer parameter vector (including height) are developed for multi-dimensional synthetic apertures, and quantify the performance enhancement over a limited sector of the image plane relative to standard-aperture single-pass SAR missions. An efficient means for the design and analysis of SAR waveforms and flight paths is proposed using simulated scattering models that are limited in size. Comparison of the error bounds to those for standard-aperture SAR show that estimates of scatterer range and cross-range positions are accurate for multi-dimensional aperture SAR, even with the additional estimator for height. Furthermore, multi-dimensional SAR is shown to address the layover problem. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYNTHETIC aperture radar KW - COHERENT radar KW - IMAGING systems KW - ELECTRONIC systems KW - ELECTRONIC pulse techniques N1 - Accession Number: 25227685; Linnehan, Robert 1; Email Address: robert.linnehan@hanscom.af.mil Brady, David 2 Schindler, John 3 Perlovsky, Leonid 1 Rangaswamy, Muralidhar 1; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, 80 Scott Dr., Hanscom AFB, MA 01731-2909. 2: Dept. of Electrical and Computer Engineering, Northeastern University, Boston, MA. 3: Anteon Corporation, Hanscom AFB, MA.; Source Info: Jan2007, Vol. 43 Issue 1, p344; Subject Term: SYNTHETIC aperture radar; Subject Term: COHERENT radar; Subject Term: IMAGING systems; Subject Term: ELECTRONIC systems; Subject Term: ELECTRONIC pulse techniques; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25227685&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Marsh, Eric D. AU - Reid, James Robert AU - Vasilyev, Vladimir S. T1 - Gold-Plated Micromachined Millimeter-Wave Resonators Based on Rectangular Coaxial Transmission Lines. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques Y1 - 2007/01// VL - 55 IS - 1 M3 - Article SP - 78 EP - 84 SN - 00189480 AB - Resonators based on microfabricated rectangular coaxial (recta-coax) transmission lines are presented. The resonators were fabricated using a multilayered nickel electroplating process that enables the fabrication of three-dimensional structures. As a method to improve performance, gold was plated on the resonators using an electroless process. A model for predicting the effect of the plating on a resonator quality (Q) factor is presented and verified by measurements. Measured resonators show that the plating can increase the Q factor of nickel resonators by over 50% at frequencies above. 44 GHz. Utilizing gold plating, 50-Ω resonators are demonstrated at 44 and 60 GHz with unloaded Q factors of 213.1 and 242.3, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESONATORS KW - SOUND -- Equipment & supplies KW - MICROMACHINING KW - MILLIMETER astronomy KW - ELECTRIC lines KW - INTERCONNECTED electric utility systems KW - Micromachining KW - millimeter-wave resonators KW - Q factor KW - transmission line resonators N1 - Accession Number: 23775431; Marsh, Eric D. 1; Email Address: Eric.Marsh@hanscom.af.mil Reid, James Robert 1; Email Address: James.Reid@hanscom.af.mil Vasilyev, Vladimir S. 2; Email Address: vladimir.vasilyev@hanscom.af.mil; Affiliation: 1: Antenna Technology Branch, Air Force Research Laboratory, Hanscom AFB, MA 01731 USA 2: S4 Inc., Burlington, MA 01803 USA; Source Info: Jan2007, Vol. 55 Issue 1, p78; Subject Term: RESONATORS; Subject Term: SOUND -- Equipment & supplies; Subject Term: MICROMACHINING; Subject Term: MILLIMETER astronomy; Subject Term: ELECTRIC lines; Subject Term: INTERCONNECTED electric utility systems; Author-Supplied Keyword: Micromachining; Author-Supplied Keyword: millimeter-wave resonators; Author-Supplied Keyword: Q factor; Author-Supplied Keyword: transmission line resonators; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238910 Site Preparation Contractors; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; Number of Pages: 7p; Illustrations: 4 Diagrams, 4 Charts, 5 Graphs; Document Type: Article L3 - 10.1109/TMTT.2006.888947 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23775431&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Lixiong AU - Hurley, James A. T1 - Ammonia-based hydrogen source for fuel cell applications JO - International Journal of Hydrogen Energy JF - International Journal of Hydrogen Energy Y1 - 2007/01// VL - 32 IS - 1 M3 - Article SP - 6 EP - 10 SN - 03603199 AB - Generation of hydrogen from the reaction of ammonia () with magnesium hydride () was studied. Experiments were conducted at near ambient temperatures (75–), which are lower than that required by ammonia cracking and/or metal hydride thermal decomposition reactions. Effects of selected catalysts/promoters for the production of hydrogen by the – reaction were evaluated. Addition of ammonium chloride () accelerated the – reaction. Doped with either or also showed increased reactivity towards for production in the presence of . Results from this study demonstrated the feasibility of hydrogen production from ammonia-based reactions in support of potable hydrogen fuel cells. These preliminary results warrant further systematic studies to elucidate the activation mechanism of or as catalysts, as well as the role of as an additive, a reactant and/or a catalyst in the reaction system of interest. [Copyright &y& Elsevier] AB - Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUEL cells KW - HYDROGEN production KW - AMMONIA KW - MAGNESIUM group KW - CATALYSTS KW - HYDRIDES KW - TEMPERATURE normals KW - AMMONIUM compounds KW - Ammonia KW - Hydrides KW - production KW - Promoters N1 - Accession Number: 23670921; Li, Lixiong 1; Email Address: lli@ara.com Hurley, James A. 2; Affiliation: 1: Applied Research Associates, Inc., 430 West 5th Street, Panama City, FL 32401, USA 2: Air Force Research Laboratory, Tyndall AFB, FL 32403, USA; Source Info: Jan2007, Vol. 32 Issue 1, p6; Subject Term: FUEL cells; Subject Term: HYDROGEN production; Subject Term: AMMONIA; Subject Term: MAGNESIUM group; Subject Term: CATALYSTS; Subject Term: HYDRIDES; Subject Term: TEMPERATURE normals; Subject Term: AMMONIUM compounds; Author-Supplied Keyword: Ammonia; Author-Supplied Keyword: Hydrides; Author-Supplied Keyword: production; Author-Supplied Keyword: Promoters; NAICS/Industry Codes: 325612 Polish and Other Sanitation Good Manufacturing; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; NAICS/Industry Codes: 325311 Nitrogenous Fertilizer Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.ijhydene.2006.05.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23670921&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parker, Gregory H. AU - Maple, Raymond C. AU - Beran, Philip S. T1 - Computational Aeroelastic Analysis of Store-Induced Limit-Cycle Oscillation. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2007/01//Jan/Feb2007 VL - 44 IS - 1 M3 - Article SP - 48 EP - 48 SN - 00218669 AB - Limit-cycle oscillation was simulated for a rectangular wing referred to as the Goland+ wing. It was found that the aerodynamic nonlinearity responsible for limit-cycle oscillation in the Goland+ wing was shock motion and the periodic appearance/disappearance of shocks. The Goland+ structural model was such that in the transonic flutter dip region, the primary bending and twisting modes were in phase and coupled to produce a single-degree-of-freedom, torsional flutter mode about a point located ahead of the leading edge of the wing. It was determined that the combination of strong trailing-edge and lambda shocks which periodically appear/disappear, limited the energy flow into the structure. This mechanism quenched the growth of the flutter, resulting in a steady limit-cycle oscillation. Underwing and tip stores were added to the Goland+ wing to determine how they affected limit-cycle oscillation. It was found that the aerodynamic forces on the store transferred additional energy into the structure increasing the amplitude of the limit-cycle oscillation. However, it was also found that the underwing store interfered with the airflow on the bottom of the wing, which limited the amplitude of the limit-cycle oscillation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - OSCILLATIONS KW - LIMIT cycles KW - NONLINEAR oscillations KW - FLUTTER (Aerodynamics) KW - TRANSONIC aerodynamics N1 - Accession Number: 24133294; Parker, Gregory H. 1 Maple, Raymond C. 1 Beran, Philip S. 2; Affiliation: 1: Air Force Institute of Technology, Wright-Patterson AFB, Ohio 45433 2: U.S. Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433; Source Info: Jan/Feb2007, Vol. 44 Issue 1, p48; Subject Term: AEROELASTICITY; Subject Term: OSCILLATIONS; Subject Term: LIMIT cycles; Subject Term: NONLINEAR oscillations; Subject Term: FLUTTER (Aerodynamics); Subject Term: TRANSONIC aerodynamics; Number of Pages: 1p; Document Type: Article L3 - 10.2514/1.21051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24133294&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kaplan, Sergey M. AU - Altman, Aaron AU - Ol, Michael T1 - Wake Vorticity Measurements for Low Aspect Ratio Wings at Low Reynolds Number. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2007/01//Jan/Feb2007 VL - 44 IS - 1 M3 - Article SP - 241 EP - 241 SN - 00218669 AB - Trailing vortex structure of low aspect ratio wings was studied in a water tunnel at Reynolds numbers of 8000 and 24,000 using dye injection and digital particle image velocimetry in cross-flow planes in the near wake, for rectangular, semi-elliptical, and delta-wing planforms. The velocity data were used to calculate lift via circulation and effective span, and the results were compared with force balance measurements and classical inviscid theory. The objectives of the study were to assess how low-Reynolds number effects might affect the measurement of lift coefficient from tip-vortex circulation, how well the measurements fit the various theoretical models of lift curve slope for low aspect ratio wings, and the extent to which planform shape affects lift coefficient while aspect ratio and planform area are kept constant. All models were thin flat plates with square edges. For the conditions studied, apparent viscous effects on vorticity integrations in the wake were small, resulting in good agreement between lift coefficient values inferred from the measurements, the force balance data, and the classical inviscid formulas. Whereas the three wings exhibited distinctly different wake structures, lift curve slopes were similar. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VORTEX motion KW - VORTEX flaps KW - WATER tunnels KW - REYNOLDS number KW - INVISCID flow KW - AEROFOILS KW - AERODYNAMICS N1 - Accession Number: 24133313; Kaplan, Sergey M. 1 Altman, Aaron 1 Ol, Michael 2; Affiliation: 1: University of Dayton, Dayton, Ohio 45469-0238 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542; Source Info: Jan/Feb2007, Vol. 44 Issue 1, p241; Subject Term: VORTEX motion; Subject Term: VORTEX flaps; Subject Term: WATER tunnels; Subject Term: REYNOLDS number; Subject Term: INVISCID flow; Subject Term: AEROFOILS; Subject Term: AERODYNAMICS; Number of Pages: 1p; Document Type: Article L3 - 10.2514/1.23096 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24133313&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mitchel, W. C. AU - Mitchell, W. D. AU - Landis, G. AU - Smith, H. E. AU - Lee, Wonwoo AU - Zvanut, M. E. T1 - Vanadium donor and acceptor levels in semi-insulating 4H- and 6H-SiC. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2007/01//1/1/2007 VL - 101 IS - 1 M3 - Article SP - 013707 EP - N.PAG PB - American Institute of Physics SN - 00218979 AB - The electronic levels of vanadium in semi-insulating 4H- and 6H-SiC have been reinvestigated using temperature dependent Hall effect and resistivity measurements at temperatures up to 1000 K in conjunction with electron paramagnetic resonance (EPR) and optical absorption measurements which were used to identify the charge state of vanadium in the material. Two distinct thermal activation energies were found for each polytype. The shallower of the two levels correlated with the presence of both V3+ and V4+ in the EPR and absorption experiments, demonstrating that this level is the vanadium acceptor level while the deeper level is the donor level for which the V4+ charge state was observed. The results for the V4+/5+ donor level, EC-1.57±0.09 eV for 4H-SiC and EC-1.54±0.06 eV for 6H-SiC, are in agreement with the generally accepted values. However, the results for the V3+/4+ acceptor level, EC-0.85±0.03 eV in 6H-SiC and EC-1.11±0.08 eV in 4H-SiC, are significantly higher than previously assumed. Variations in crystal quality and purity may explain the differences in the previously reported values for the donor and acceptor levels. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONICS KW - VANADIUM KW - TRANSITION metals KW - TEMPERATURE KW - ELECTRON paramagnetic resonance KW - PARAMAGNETISM KW - OPTICS KW - RESEARCH N1 - Accession Number: 23761951; Mitchel, W. C. 1 Mitchell, W. D. 1 Landis, G. 2 Smith, H. E. 2 Lee, Wonwoo 3 Zvanut, M. E. 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433-7707 2: University of Dayton Research Institute, Dayton, Ohio 45469 3: Department of Physics, University of Alabama at Birmington, Birmington, Alabama 35294; Source Info: 1/1/2007, Vol. 101 Issue 1, p013707; Subject Term: ELECTRONICS; Subject Term: VANADIUM; Subject Term: TRANSITION metals; Subject Term: TEMPERATURE; Subject Term: ELECTRON paramagnetic resonance; Subject Term: PARAMAGNETISM; Subject Term: OPTICS; Subject Term: RESEARCH; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 7p; Illustrations: 2 Charts, 10 Graphs; Document Type: Article L3 - 10.1063/1.2407263 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23761951&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morgan Bishop AU - Anthony J. Macula AU - Kayla Nimmo AU - Lauren Wood AU - Wendy K. Pogozelski AU - Thomas E. Renz T1 - Group Testing to Annihilate Pairs Applied to DNA Cross-Hybridization Elimination Using SYBR Green I. JO - Journal of Computational Biology JF - Journal of Computational Biology Y1 - 2007/01// VL - 14 IS - 1 M3 - Article SP - 84 EP - 96 SN - 10665277 AB - A group testing (or pooling) method for DNA strands that identifies at least one strand in a pair of cross-hybridized oligonucleotides is given. This pooling method can be extended to any population of objects where certain pairs together produce an observable function or signal. Pairs of objects may work together to produce an undesirable result or a detrimental function. If just a single element of such a pair is identified and eliminated, then the undesirable function of that pair is destroyed. In particular, the ability to ensure that a set DNA probes do not yield undesired cross-hybridizations is important when these probes and/or their complements are used in the production of a hybridization signal that is intended to convey information. Here we report a "proof of principle" method, similar to those used to screen DNA libraries, that screens pools of probes for unwanted cross-hybridization events and identifies the offending probes. In the reported experiment, a cross-hybridized duplex in a pool of probes is detected by using the fluorescent dye SYBR Green I. This dye is known to produce greater fluorescence when bound to duplex DNA as opposed to single-stranded DNA. The method described here is sensitive, fast, and simple. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Computational Biology is the property of Mary Ann Liebert, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DNA KW - OLIGONUCLEOTIDES KW - HYBRIDIZATION KW - NUCLEIC acid probes N1 - Accession Number: 24580243; Morgan Bishop 1 Anthony J. Macula 2 Kayla Nimmo 2 Lauren Wood 2 Wendy K. Pogozelski 2 Thomas E. Renz 3; Affiliation: 1: JEANSEE, Geneseo, NewYork. 2: Biomathematics Group, SUNY Geneseo, Geneseo, NewYork. 3: IFTC, Air Force Research Laboratory, Rome, NewYork.; Source Info: Jan2007, Vol. 14 Issue 1, p84; Subject Term: DNA; Subject Term: OLIGONUCLEOTIDES; Subject Term: HYBRIDIZATION; Subject Term: NUCLEIC acid probes; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24580243&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, G.S. AU - Lu, T.C. AU - Yao, H.H. AU - Kuo, H.C. AU - Wang, S.C. AU - Sun, Greg AU - Lin, Chih-wei AU - Chang, Li AU - Soref, Richard A. T1 - GaN/AlGaN active regions for terahertz quantum cascade lasers grown by low-pressure metal organic vapor deposition JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2007/01// VL - 298 M3 - Article SP - 687 EP - 690 SN - 00220248 AB - Abstract: The GaN/AlGaN active regions for terahertz (THz) quantum cascade lasers were grown by metal organic chemical vapor deposition (MOCVD). The surface of the sample was characterized by atomic force microscopy (AFM). The structure of this sample was evaluated by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The XRD pattern and cross-sectional TEM images showed that a well-controlled quantum cascade GaN/AlGaN layers could be prepared. Optical properties of the active region of a terahertz GaN/AlGaN have been investigated by Fourier transform infrared (FTIR) spectrometer. It was found that the frequency of E 1(LO) phonon decreased in quantum cascade GaN/AlGaN structures. The phonon frequency shift could be attributed to the effect of phonon zone folding. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VAPOR-plating KW - CHEMICAL vapor deposition KW - ATOMIC force microscopy KW - NONLINEAR optics KW - 68.37.Lp KW - 73.61.Ey KW - 81.15.Gh KW - A1. X-ray diffraction KW - A3. Metal organic chemical vapor deposition KW - B1. Nitrides N1 - Accession Number: 23824005; Huang, G.S. 1 Lu, T.C. 1 Yao, H.H. 1 Kuo, H.C. 1; Email Address: hckuo@faculty.nctu.edu.tw Wang, S.C. 1 Sun, Greg 2 Lin, Chih-wei 3 Chang, Li 3 Soref, Richard A. 4; Affiliation: 1: Department of Photonics & Institute of Electro-Optical Engineering, National Chiao Tung University, 1001 TA Hsueh Road, Hsinchu, 300 Taiwan, ROC 2: Department of physics, University of Massachusetts, Boston, MA 02125, USA 3: Department of Materials Science and Engineering, National Chiao Tung University, 1001 TA Hsueh Road, Hsinchu, 300 Taiwan, ROC 4: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA 01731, USA; Source Info: Jan2007, Vol. 298, p687; Subject Term: VAPOR-plating; Subject Term: CHEMICAL vapor deposition; Subject Term: ATOMIC force microscopy; Subject Term: NONLINEAR optics; Author-Supplied Keyword: 68.37.Lp; Author-Supplied Keyword: 73.61.Ey; Author-Supplied Keyword: 81.15.Gh; Author-Supplied Keyword: A1. X-ray diffraction; Author-Supplied Keyword: A3. Metal organic chemical vapor deposition; Author-Supplied Keyword: B1. Nitrides; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jcrysgro.2006.10.106 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23824005&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mileham, Melissa AU - Stiegman, A. E. AU - Kramer, Michael P. T1 - Stability and Degradation Processes of 2,4,6-Trinitrotoluene (TNT) on Metal Oxide Surfaces. JO - Journal of Energetic Materials JF - Journal of Energetic Materials Y1 - 2007/01// VL - 25 IS - 1 M3 - Article SP - 19 EP - 34 PB - Taylor & Francis Ltd SN - 07370652 AB - The chemical stability of 2,4,6-trinitrotoluene (TNT) when placed in physical contact with metal oxide surfaces is investigated. The TNT is deposited at 1-3 monolayers of coverage on the surface of microcrystalline MnO2, CuO, WO3, MoO3, Bi2O3, SnO2, and Fe2O3 by wet impregnation. The samples were placed in a 50°C oven and allowed to react over a period of 11 months. Periodically, samples were removed and analyzed chromatographically to determine whether products were being formed at the surface of the oxide. TNT proved to be inert to most oxides; however, both CuO and MnO2 effected a clean decomposition of the TNT into tri-nitrobenzene. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Energetic Materials is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TNT (Chemical) KW - METALLIC oxides KW - METALS KW - OXIDES KW - EXPLOSIVES KW - degradation KW - metal oxides KW - trinitrotoluene (TNT) N1 - Accession Number: 24876002; Mileham, Melissa 1 Stiegman, A. E. 1 Kramer, Michael P. 2; Affiliation: 1: Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 2: Air Force Research Laboratory, Munitions Directorate, Ordnance Division, Energetic Materials Branch, (AFRL=MNME), Eglin, AFB FL; Source Info: Jan2007, Vol. 25 Issue 1, p19; Subject Term: TNT (Chemical); Subject Term: METALLIC oxides; Subject Term: METALS; Subject Term: OXIDES; Subject Term: EXPLOSIVES; Author-Supplied Keyword: degradation; Author-Supplied Keyword: metal oxides; Author-Supplied Keyword: trinitrotoluene (TNT); NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 16p; Illustrations: 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1080/07370650601107211 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24876002&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Scott-Emuakpor, Onome AU - Shen, M.-H. Herman AU - George, Tommy AU - Cross, Charles J. AU - Calcaterra, Jeffrey T1 - Development of an Improved High Cycle Fatigue Criterion. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2007/01// VL - 129 IS - 1 M3 - Article SP - 162 EP - 169 SN - 07424795 AB - An integrated computational-experimental approach for prediction of total fatigue life applied to a uniaxial stress state is developed. The approach consists of the following elements: (1) development of a vibration based fatigue testing procedure to achieve low cost bending fatigue experiments and (2) development of a life prediction and estimation implementation scheme for calculating effective fatigue cycles. A series of fully reversed bending fatigue tests were carried out using a vibration-based testing procedure to investigate the effects of bending stress on fatigue limit. The results indicate that the fatigue limit for 6061-T6 aluminum is approximately 20% higher than the respective limit in fully reversed tension-compression (axial). To validate the experimental observations and further evaluate the possibility of prediction of fatigue life, an improved high cycle fatigue criterion has been developed, which allows one to systematically determine the fatigue life based on the amount of energy loss per fatigue cycle. A comparison between the prediction and the experimental results was conducted and shows that the criterion is capable of providing accurate fatigue life prediction. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Fatigue KW - STRAINS & stresses (Mechanics) KW - VIBRATION (Mechanics) KW - BENDING (Metalwork) KW - SERVICE life (Engineering) N1 - Accession Number: 23746612; Scott-Emuakpor, Onome 1 Shen, M.-H. Herman 1; Email Address: shen.1@osu.edu George, Tommy 2 Cross, Charles J. 2 Calcaterra, Jeffrey 2; Affiliation: 1: Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433; Source Info: Jan2007, Vol. 129 Issue 1, p162; Subject Term: MATERIALS -- Fatigue; Subject Term: STRAINS & stresses (Mechanics); Subject Term: VIBRATION (Mechanics); Subject Term: BENDING (Metalwork); Subject Term: SERVICE life (Engineering); Number of Pages: 8p; Illustrations: 2 Diagrams, 4 Charts, 12 Graphs; Document Type: Article L3 - 10.1115/1.2360599 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23746612&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Georgiadis, Basil D. T1 - A Writer at War: Vasily Grossman with the Red Army, 1941-1945. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2007/01// VL - 6 IS - 1 M3 - Book Review SP - 81 EP - 82 PB - Routledge SN - 15027570 AB - This article reviews the book "A Writer at War: Vasily Grossman With the Red Army 1941-1945," edited and translated by Beevor Antony and Luba Vinogradova. KW - WAR correspondents KW - NONFICTION KW - ANTONY, Beevor KW - VINOGRADOVA, Luba KW - WRITER at War: Vasily Grossman With the Red Army 1941-1945, A (Book) N1 - Accession Number: 24726609; Georgiadis, Basil D. 1; Affiliation: 1: Department of History, United States Air Force Academy; Source Info: Jan2007, Vol. 6 Issue 1, p81; Subject Term: WAR correspondents; Subject Term: NONFICTION; Reviews & Products: WRITER at War: Vasily Grossman With the Red Army 1941-1945, A (Book); People: ANTONY, Beevor; People: VINOGRADOVA, Luba; Number of Pages: 2p; Document Type: Book Review L3 - 10.1080/15027570600913270 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24726609&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hallgarth, Matthew W. T1 - Bioethics and Armed Conflict: Moral Dilemmas of Medicine and War. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2007/01// VL - 6 IS - 1 M3 - Book Review SP - 83 EP - 84 PB - Routledge SN - 15027570 AB - This article reviews the book "Bioethics and Armed Conflict: Moral Dilemmas of Medicine and War," by Michael L. Gross. KW - MEDICINE & war KW - NONFICTION KW - GROSS, Michael L. KW - BIOETHICS & Armed Conflict: Moral Dilemmas of Medicine & War (Book) N1 - Accession Number: 24726608; Hallgarth, Matthew W. 1; Affiliation: 1: Department of Philosophy, US Air Force Academy; Source Info: Jan2007, Vol. 6 Issue 1, p83; Subject Term: MEDICINE & war; Subject Term: NONFICTION; Reviews & Products: BIOETHICS & Armed Conflict: Moral Dilemmas of Medicine & War (Book); People: GROSS, Michael L.; Number of Pages: 2p; Document Type: Book Review L3 - 10.1080/15027570601086654 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24726608&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McFarland, Michael J. AU - Rasmussen, Steven L. AU - Stone, Daniel A. AU - Palmer, Glenn R. AU - Olivas, Arthur C. AU - Wander, Joseph D. AU - Spencer, Michael T1 - Field Demonstration of Visible Opacity Photographic Systems. JO - Journal of the Air & Waste Management Association (Air & Waste Management Association) JF - Journal of the Air & Waste Management Association (Air & Waste Management Association) Y1 - 2007/01// VL - 57 IS - 1 M3 - Article SP - 31 EP - 38 PB - Air & Waste Management Association SN - 10962247 AB - The Digital Opacity Compliance System (DOCS) is an innovative method that uses digital imaging technology to quantify visible opacity of stationary sources. DOCS, which has been demonstrated at pilot and full scale as a technically defensible and economically attractive alternative to U.S. Environmental Protection Agency (EPA) Reference Method 9 (Method 9), uses commercial-off-the-shelf (COTS) digital cameras in combination with a user-friendly computer software package to determine opacity. To date, all DOCS field testing has been conducted using two models of digital cameras, notably, Kodak Models DC265 and DC290, both of which are no longer commercially available. To ensure that field-validated digital cameras will be available to future DOCS users, a suite of new digital cameras was evaluated with the opacity determination software including the following: (1) Sony Model Cybershot Model DSC-WI, (2) Nikon Model Coolpix 5200, (3) Fuji Finepix Model E500, and (4) Kodak Model DX6490. Within the opacity range of regulatory interest, that is, 0--40%, the Sony Cybershot Model DSC-WI and Nikon Coolpix Model 5200 digital cameras were found to generate plume photographs of which the DOCS opacity analysis yielded results that were statistically equivalent to the previously field-validated Kodak Model DC290. In contrast, the Fuji Finepix Model E500 generated plume photographs of which the DOCS opacity analysis were, on average, 2.2% less than those generated by the Kodak Model DC290 photographs, a difference that was determined to be statistically significant. Over the same opacity range, photographs taken by the Kodak Model DX6490 yielded DOCS opacity readings that were found to be statistically equivalent to a Method 9-certified transmissometer. Based on the results from the current digital camera validation testing approach, EPA has developed a new camera-based visible opacity measurement method titled "Determination of Visible Emission Opacity from Stationary Sources Using Computer-Based Photographic Analysis Systems." The proposed method is expected to be promulgated after closure of the public comment period. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Air & Waste Management Association (Air & Waste Management Association) is the property of Air & Waste Management Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPACITY (Optics) KW - DIGITAL cameras KW - COMPUTER software KW - OPTICS KW - PHOTOGRAPHS N1 - Accession Number: 23810963; McFarland, Michael J. 1; Email Address: farlandm@msn.com Rasmussen, Steven L. 2 Stone, Daniel A. 2 Palmer, Glenn R. 2 Olivas, Arthur C. 2 Wander, Joseph D. 3 Spencer, Michael 4; Affiliation: 1: Department of Civil and Environmental Engineering, Utah State University, Logan, UT 2: Hill Air Force Base, UT 3: U.S. Air Force Research Laboratory, Tyndall Air Force Base, FL 4: Xerox Corp., Rochester, NY; Source Info: Jan2007, Vol. 57 Issue 1, p31; Subject Term: OPACITY (Optics); Subject Term: DIGITAL cameras; Subject Term: COMPUTER software; Subject Term: OPTICS; Subject Term: PHOTOGRAPHS; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; Number of Pages: 8p; Illustrations: 2 Black and White Photographs, 3 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23810963&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Peterson, Dale T1 - Gridline indifference graphs JO - Mathematical Social Sciences JF - Mathematical Social Sciences Y1 - 2007/01// VL - 53 IS - 1 M3 - Article SP - 69 EP - 92 SN - 01654896 AB - Abstract: Indifference graphs can be realized on a line with vertices adjacent whenever they are within a given distance. These well-studied graphs have applications to many fields including ecology, cluster theory, and psychology, in the placement of objects in a single dimension. The extension to the grid and higher dimensions has been considered in e.g. Goodman''s study of perception (1977); we introduce gridline indifference graphs, which can be realized in the plane with vertices adjacent whenever they are within a given distance and on a common vertical or horizontal line. We obtain full and partial characterizations when these graphs are triangulated in terms of forbidden subgraphs, extreme points, and tree-clique graphs. These results are extended to higher dimensions. [Copyright &y& Elsevier] AB - Copyright of Mathematical Social Sciences is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPHIC methods KW - BUSINESS records KW - DIMENSIONAL analysis KW - DECISION logic tables KW - C65 KW - Indifference graph KW - Tree-clique graph N1 - Accession Number: 23445575; Peterson, Dale 1; Email Address: dale.peterson@usafa.af.mil; Affiliation: 1: Department of Mathematical Sciences, HQ USAFA/DFMS, United States Air Force Academy, CO 80840-6252, USA; Source Info: Jan2007, Vol. 53 Issue 1, p69; Subject Term: GRAPHIC methods; Subject Term: BUSINESS records; Subject Term: DIMENSIONAL analysis; Subject Term: DECISION logic tables; Author-Supplied Keyword: C65; Author-Supplied Keyword: Indifference graph; Author-Supplied Keyword: Tree-clique graph; Number of Pages: 24p; Document Type: Article L3 - 10.1016/j.mathsocsci.2006.08.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23445575&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ketchum, Norma S. AU - Michalek, Joel E. AU - Pavuk, Marian T1 - Mortality, Length of Life, and Physical Examination Attendance in Participants of the Air Force Health Study. JO - Military Medicine JF - Military Medicine Y1 - 2007/01// VL - 172 IS - 1 M3 - Article SP - 53 EP - 57 PB - AMSUS SN - 00264075 AB - Begun in 1982, the Air Force Health Study (AFHS) has assessed the mortality of veterans of Operation Ranch Hand, the unit responsible for aerially spraying herbicides in Vietnam. A comparison group of other Air Force veterans involved with aircraft missions in Southeast Asia during the same period, but not involved with spraying herbicides, was included in the study. Among 18,082 veterans, this report examined whether attendance at AFHS physical examinations from 1982 to 1999 played a role in mortality experience and potential lengthening of life relative to veterans who did not attend. The years of potential life lost for 1,173 veterans who died before age 65 was calculated. No statistically significant difference in risk of death was found from all causes, cancer, or circulatory disease between attendees and nonattendees. No evidence was found to suggest that attending physical examinations decreased mortality or substantially lengthened life in AFHS participants. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VETERANS -- United States KW - MORTALITY KW - OPERATION Ranch Hand, 1962-1971 KW - HERBICIDES KW - AIR forces KW - MEDICAL screening KW - VIETNAM N1 - Accession Number: 23694575; Ketchum, Norma S. 1 Michalek, Joel E. 2 Pavuk, Marian 3; Affiliation: 1: Air Force Research Laboratory, 8315 Hawks Road, Building 1168, Brooks City-Base, TX 78235 5368 2: Center for Epidemiology and Biostatistics, University of Texas Health Science Center, San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229 3: Spec-Pro, Inc., 12500 San Pedro Avenue, Suite 670, San Antonio, TX 78216-3621; Source Info: Jan2007, Vol. 172 Issue 1, p53; Subject Term: VETERANS -- United States; Subject Term: MORTALITY; Subject Term: OPERATION Ranch Hand, 1962-1971; Subject Term: HERBICIDES; Subject Term: AIR forces; Subject Term: MEDICAL screening; Subject Term: VIETNAM; NAICS/Industry Codes: 325320 Pesticide and Other Agricultural Chemical Manufacturing; NAICS/Industry Codes: 418390 Agricultural chemical and other farm supplies merchant wholesalers; NAICS/Industry Codes: 621999 All Other Miscellaneous Ambulatory Health Care Services; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23694575&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - McKinley, Arnold F. AU - Lee, David J. AU - Podolefsky, Noah S. AU - Finkelstein, Noah D. AU - Honig, E. T1 - Letters to the Editor. JO - Physics Teacher JF - Physics Teacher Y1 - 2007/01// VL - 45 IS - 1 M3 - Letter SP - 4 EP - 6 SN - 0031921X AB - Several letters to the editor are presented in response to articles in previous issues including "The Perceived Value of College Physics Textbooks: Students and Instructors May Not See Eye to Eye," by Noah Podolefsky and Noah Finkelstein" in the September 2006 issue, and a comment on the nationwide high school physics safe cracking competition held yearly at the Weizmann Institute of Science in Rehovoth, Israel. KW - LETTERS to the editor KW - PHYSICS -- Study & teaching KW - TEXTBOOKS KW - SCIENCE competitions KW - ISRAEL KW - MEKHON Vaitsman le-mada N1 - Accession Number: 23684284; McKinley, Arnold F. 1; Email Address: amckinley@themarinschool.org Lee, David J. 2 Podolefsky, Noah S. 3 Finkelstein, Noah D. 3 Honig, E. 4,5; Email Address: honig@physics.utoronto.ca; Affiliation: 1: The Marin School, Sausalito, CA 94965 2: Lieutenant Colonel and Assistant, Professor of Physics, United States Air Force Academy 3: University of Colorado, Boulder, CO 4: Tanenbaum CHAT, South Campus, 200 Wilmington Ave., Downsview, Ontario, M3H 5J8 5: University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7; Source Info: Jan2007, Vol. 45 Issue 1, p4; Subject Term: LETTERS to the editor; Subject Term: PHYSICS -- Study & teaching; Subject Term: TEXTBOOKS; Subject Term: SCIENCE competitions; Subject Term: ISRAEL; Company/Entity: MEKHON Vaitsman le-mada; NAICS/Industry Codes: 323119 Other printing; Number of Pages: 4p; Document Type: Letter UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23684284&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liptak, David C. AU - Reber, Jason C. AU - Maguire, John F. AU - Amer, Maher S. T1 - On the development of a confocal Rayleigh-Brillouin microscope. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2007/01// VL - 78 IS - 1 M3 - Article SP - 016106 PB - American Institute of Physics SN - 00346748 AB - This Note illustrates how a confocal microscope may be modified to conduct Rayleigh-Brillouin mapping experiments that yield very useful information on the mechanical properties of interfacial materials in small volume elements. While the modifications to the microscope are quite straightforward, they do entail significant changes in the optical design. The instrument described herein consists of an argon ion laser equipped with an actively stabilized intercavity étalon that serves as the excitation source for a modified Zeiss LSM 310 confocal laser scan microscope. The optics of the microscope were reconfigured to enable interfacing of the microscope with a tandem triple-pass Fabry-Pérot interferometer. This instrument enables three-dimensional Rayleigh-Brillouin spectral mapping of samples at micron spatial resolution. The performance of the instrument and its ability to perform both lateral and depth scans of the acoustic phonon velocity and, hence, the longitudinal modulus across bonded polymer/polymer and polymer/ceramic interfaces are illustrated and discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONFOCAL microscopy KW - MICROSCOPES KW - OPTICAL instruments KW - POLYMERS KW - ARGON KW - LASER electrochemistry KW - DESIGN & construction N1 - Accession Number: 24601950; Liptak, David C. 1 Reber, Jason C. 1 Maguire, John F. 1 Amer, Maher S. 2; Affiliation: 1: Air Force Research Laboratory, Materials Directorate, Wright-Patterson Air Force Base, Ohio, 45433-7750 2: Air Force Research Laboratory, Materials Directorate, Wright-Patterson Air Force Base, Ohio 45433-7750 and Department of Mechanical and Materials Engineering, Wright State University, Dayton, Ohio, 45435; Source Info: Jan2007, Vol. 78 Issue 1, p016106; Subject Term: CONFOCAL microscopy; Subject Term: MICROSCOPES; Subject Term: OPTICAL instruments; Subject Term: POLYMERS; Subject Term: ARGON; Subject Term: LASER electrochemistry; Subject Term: DESIGN & construction; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 446130 Optical Goods Stores; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 3p; Illustrations: 1 Diagram, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.2431181 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24601950&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blackwell, Christopher AU - Palazotto, Anthony AU - George, Tommy J. AU - Cross, Charles J. T1 - The evaluation of the damping characteristics of a hard coating on titanium. JO - Shock & Vibration JF - Shock & Vibration Y1 - 2007/01// VL - 14 IS - 1 M3 - Article SP - 37 EP - 51 PB - Hindawi Publishing Corporation SN - 10709622 AB - Engine failures due to fatigue have cost the Air Force an estimated $400 million dollars per year over the past two decades. Damping treatments capable of reducing the internal stresses of fan and turbine blades to levels where fatigue is less likely to occur have the potential for reducing cost while enhancing reliability. This research evaluates the damping characteristics of magnesium aluminate spinel, MgO+Al_2O_3, (mag spinel) on titanium plates from an experimental point of view. The material and aspect ratio were chosen to approximate the low aspect ratio blades found in military gas turbine fans. In the past, work has generally been performed on cantilever supported beams, and thus the two-dimensional features of damping were lost. In this study plates were tested with a cantilevered boundary condition, using electrodynamic shaker excitation. The effective test area of each specimen was 4.5 in × 4.5 in. The nominal plate thickness was 0.125 in. Mag spinel was applied to both sides of the plate, at a thickness of 0.01 in, and damping tests were run at room temperature. The effect of the coating was evaluated at the 2nd bending mode (mode 3) and the chord wise bending mode (mode 4). A scanning laser vibrometer revealed the frequency and shape of each mode for the plates. Sine sweeps were used to characterize the damping of the coated and uncoated specimens for the modes tested. The coating increased damping nonlinearly for both modes tested in which the general outcome was similar to that found in beams. [ABSTRACT FROM AUTHOR] AB - Copyright of Shock & Vibration is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DAMPING (Mechanics) KW - SPINEL KW - TURBINES -- Blades KW - MATERIALS -- Fatigue KW - STRAINS & stresses (Mechanics) N1 - Accession Number: 23972931; Blackwell, Christopher 1 Palazotto, Anthony 1; Email Address: Anthony.Palazotto@afit.edu George, Tommy J. 2 Cross, Charles J. 2; Affiliation: 1: Department of Aeronautics and Astronautics: Air Force Institute of Technology, 2950 Hobson Way, Building 640, WPAFB, OH 45433-7765, USA 2: Air Force Research Laboratory: Propulsion Directorate, 1950 Fifth Street, WPAFB, OH 45433, USA; Source Info: 2007, Vol. 14 Issue 1, p37; Subject Term: DAMPING (Mechanics); Subject Term: SPINEL; Subject Term: TURBINES -- Blades; Subject Term: MATERIALS -- Fatigue; Subject Term: STRAINS & stresses (Mechanics); Number of Pages: 15p; Illustrations: 1 Black and White Photograph, 2 Diagrams, 6 Charts, 6 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23972931&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thomas M. Cooper AU - Douglas M. Krein AU - Aaron R. Burke AU - Daniel G. McLean AU - Joy E. Rogers AU - Jonathan E. Slagle T1 - Asymmetry in Platinum Acetylide Complexes:? Confinement of the Triplet Exciton to the Lowest Energy Ligand. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2006/12/21/ VL - 110 IS - 50 M3 - Article SP - 13370 EP - 13378 SN - 10895639 AB - To determine structure-optical property relationships in asymmetric platinum acetylide complexes, we synthesized the compounds trans-Pt(PBu3)2(CCC6H5)(CC-C6H4-CCC6H5) (PE1-2), trans-Pt(PBu3)2(CCC6H5)(CC-C6H4-CC-C6H4-CCC6H5) (PE1-3) and trans-Pt(PBu3)2(CC-C6H4-CCC6H5)(CC-C6H4-CC-C6H4-CCC6H5) (PE2-3) that have different ligands on either side of the platinum and compared their spectroscopic properties to the symmetrical compounds PE1, PE2and PE3. We measured ground state absorption, fluorescence, phosphorescence and triplet state absorption spectra and performed density functional theory (DFT) calculations of frontier orbitals, lowest lying singlet states, triplet state geometries and energies. The absorption and emission spectra give evidence the singlet exciton is delocalized across the central platinum atom. The phosphorescence from the asymmetric complexes comes from the largest ligand. Time-dependent (TD) DFT calculations show the S1state has mostly highest occupied molecular orbital (HOMO) ? lowest unoccupied molecular orbital (LUMO) character, with the LUMO delocalized over the chromophore. In the asymmetric chromophores, the LUMO resides on the larger ligand, suggesting the S1state has interligand charge transfer character. The triplet state geometries obtained from the DFT calculations show distortion on the lowest energy ligand, whereas the other ligand has the ground state geometry. The calculated trend in the triplet state energies agrees very well with the experimental trend. Calculations of triplet state spin density also show the triplet exciton is confined to one ligand. In the asymmetric complexes the spin density is confined to the largest ligand. The results show Kasha's rule applies to these complexes, where the triplet exciton moves to the lowest energy ligand. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGANDS KW - COORDINATION compounds KW - PLATINUM KW - MOLECULAR spectroscopy N1 - Accession Number: 23618910; Thomas M. Cooper 1 Douglas M. Krein 1 Aaron R. Burke 1 Daniel G. McLean 1 Joy E. Rogers 1 Jonathan E. Slagle 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base,Ohio 45433, Anteon Corporation, Dayton, Ohio 45431, SAIC, Dayton, Ohio 45434, UES, Inc., Dayton, Ohio45432, and AT&T Corporation, Dayton, Ohio 45434; Source Info: Dec2006, Vol. 110 Issue 50, p13370; Subject Term: LIGANDS; Subject Term: COORDINATION compounds; Subject Term: PLATINUM; Subject Term: MOLECULAR spectroscopy; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23618910&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jones, J.G. AU - Muratore, C. AU - Waite, A.R. AU - Voevodin, A.A. T1 - Plasma diagnostics of hybrid magnetron sputtering and pulsed laser deposition JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2006/12/20/ VL - 201 IS - 7 M3 - Article SP - 4040 EP - 4045 SN - 02578972 AB - Abstract: This paper investigates the use of advanced triggering to synchronize a pulsed laser ablated plasma from a ceramic target with a pulsed DC sputtering plasma from a metal target for the purposes of depositing nanocomposite thin-films at low substrate temperatures. A digital oscilloscope and a programmable delay generator were used to prescribe the synchronization time of the two plasmas and frequency of discharge of the laser. Films were grown with different times of synchronization and subsequently characterized using X-ray diffraction and XPS. A multichannel analyzer was used to monitor the plasma emissions to determine spatial evolution of the synchronized pulsed plasma and a spectrometer was used to determine if additional spectra were generated through the interaction of the two plasmas. The studies did not show a clear presence of a new chemical compound formed in the hybrid plasma, but indicated an enhancement of the laser ablated plasma excitation in the presence of pulsed magnetron plasma process. This additional plasma excitation occurred at certain timing of the two pulsed plasma sources and was used to produce a Zr(Y)O2/Mo film containing crystalline ZrO2. Present results indicate that crystalline ceramic films can be deposited at low substrate temperature in which the film crystallinity is enhanced based on the synchronization timing. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PULSED laser deposition KW - LASERS KW - COATING processes KW - OSCILLOSCOPES KW - Film growth KW - Magnetron sputtering KW - Plasma KW - Pulsed laser deposition KW - Synchronization N1 - Accession Number: 23229038; Jones, J.G.; Email Address: john.jones@wpafb.af.mil Muratore, C. 1 Waite, A.R. 1 Voevodin, A.A. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate Wright-Patterson AFB, OH, 45433-7746, United States; Source Info: Dec2006, Vol. 201 Issue 7, p4040; Subject Term: PULSED laser deposition; Subject Term: LASERS; Subject Term: COATING processes; Subject Term: OSCILLOSCOPES; Author-Supplied Keyword: Film growth; Author-Supplied Keyword: Magnetron sputtering; Author-Supplied Keyword: Plasma; Author-Supplied Keyword: Pulsed laser deposition; Author-Supplied Keyword: Synchronization; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 334515 Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.surfcoat.2006.08.096 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23229038&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Muratore, C. AU - Voevodin, A.A. T1 - Molybdenum disulfide as a lubricant and catalyst in adaptive nanocomposite coatings JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2006/12/20/ VL - 201 IS - 7 M3 - Article SP - 4125 EP - 4130 SN - 02578972 AB - Abstract: Nanocomposite YSZ–Ag–Mo–MoS2 coatings with different MoS2 additions (0–100 at.%) were deposited with a hybrid pulsed laser/magnetron sputtering/filtered cathodic arc process. Wear testing was performed from 25 to 700 °C for each of the coatings. Electron microscopy and other characterization techniques were used to examine the surfaces and wear tracks of the coatings and to determine the mechanisms resulting in the measured tribological properties. Adaptive coatings containing 8 at.% MoS2 demonstrated a friction coefficient of 0.2 throughout the temperature range examined here, compared to 0.4 for YSZ–Ag–Mo with no MoS2. Characterization of the YSZ–Ag–Mo–8% MoS2 coating revealed that MoS2 and silver provided lubrication at temperatures ≤300 °C, while silver molybdate phases and MoO3 were effective lubricants at higher temperatures. Silver molybdate was not observed in the coatings containing 0% MoS2. The role of sulfur in the formation of silver molybdate is briefly discussed. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLYBDENUM KW - SURFACE coatings KW - PULSED laser deposition KW - MOLYBDATES KW - Adaptive coating KW - High temperature KW - Molybdenum disulfide KW - Tribology N1 - Accession Number: 23229053; Muratore, C. 1; Email Address: chris.muratore@wpafb.af.mil Voevodin, A.A. 2; Affiliation: 1: UTC Inc./Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLBT, 2941 Hobson Way, Wright–Patterson AFB, OH 45433 USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLBT, 2941 Hobson Way, Wright–Patterson AFB, OH 45433 USA; Source Info: Dec2006, Vol. 201 Issue 7, p4125; Subject Term: MOLYBDENUM; Subject Term: SURFACE coatings; Subject Term: PULSED laser deposition; Subject Term: MOLYBDATES; Author-Supplied Keyword: Adaptive coating; Author-Supplied Keyword: High temperature; Author-Supplied Keyword: Molybdenum disulfide; Author-Supplied Keyword: Tribology; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.surfcoat.2006.08.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23229053&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baker, C.C. AU - Hu, J.J. AU - Voevodin, A.A. T1 - Preparation of Al2O3/DLC/Au/MoS2 chameleon coatings for space and ambient environments JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2006/12/20/ VL - 201 IS - 7 M3 - Article SP - 4224 EP - 4229 SN - 02578972 AB - Abstract: We have investigated the tribological properties of nanocomposite “chameleon” coatings, which adapt their low friction behavior with the surrounding environmental humidity and temperature. The material system of interest included alumina (Al2O3) in an Au matrix with diamond-like carbon (DLC) and MoS2 nanoparticle inclusions. The coating design included formation of nanocrystalline hard oxide particles for wear resistance, embedding them into an amorphous matrix for toughness enhancement, and inclusion of nanocrystalline and/or amorphous solid lubricants for friction adaptation to different environments. Chemical analysis was used to ascertain a correlation between chemical bonding of species and frictional properties. Friction measurements were studied in cycling between humid air and dry nitrogen conditions at room temperature and during heating in air to 500 °C. It was observed that both graphitic carbon and MoS2 worked together to give low friction in variable humidity environment, while Au was valuable for a low friction at elevated temperatures. Friction coefficients were found to be 0.02–0.03 in dry nitrogen, 0.1–0.15 in humid air, and 0.1 in air at 500 °C. Thus the tribological property results have shown that the system provides “chameleon” type adaptation behavior in different environments relevant for aerospace systems. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHAMELEONS KW - ANIMALS -- Adaptation KW - TRIBOLOGY KW - COATING processes KW - Aerospace KW - Coatings KW - Nanocomposite KW - Tribology N1 - Accession Number: 23229072; Baker, C.C. 1; Email Address: ccbaker@unity.ncsu.edu Hu, J.J. 2 Voevodin, A.A. 2; Affiliation: 1: North Carolina State University, Department of Physics, Raleigh, NC 27695, USA 2: MLBT, Air Force Research Laboratory, WPAFB, Dayton, OH 45433-7750, USA; Source Info: Dec2006, Vol. 201 Issue 7, p4224; Subject Term: CHAMELEONS; Subject Term: ANIMALS -- Adaptation; Subject Term: TRIBOLOGY; Subject Term: COATING processes; Author-Supplied Keyword: Aerospace; Author-Supplied Keyword: Coatings; Author-Supplied Keyword: Nanocomposite; Author-Supplied Keyword: Tribology; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.surfcoat.2006.08.067 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23229072&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Voevodin, A.A. AU - Zabinski, J.S. T1 - Laser surface texturing for adaptive solid lubrication JO - Wear JF - Wear Y1 - 2006/12/20/ VL - 261 IS - 11/12 M3 - Article SP - 1285 EP - 1292 SN - 00431648 AB - Abstract: Solid lubricant systems were developed to provide friction and wear reduction in variable environmental conditions. The mechanisms employed to achieve cross-environment capability include “on demand” solid lubricant supply from reservoirs in hard wear protective coatings. This research explores recent advances in a precision laser machining to generate arrays of micrometer sized dimple reservoirs with controlled size, location, and density. These micro-reservoirs were machined by a focused UV laser beam on the surface of hard TiCN coatings produced by a cathodic vacuum arc deposition. Different dimple diameters and spacing were used to achieve area coverage with micro-reservoirs between 0.5% and 50% of the entire tribological contact surface. Solid lubricants based on MoS2 and graphite were then applied by burnishing and sputtering to such laser textured surfaces. Sliding friction tests were performed against steel balls in humid air and dry nitrogen environments. The results indicate that there is an optimum dimple surface coverage of about 10%. The life of the solid lubricants on dimpled surfaces was an order of magnitude longer than on the unmodified TiCN coating surface. The laser-processed micro-reservoirs also helped to renew lubricant supply for tests with multiple cycling between humid air and dry nitrogen. Tribological surface adaptation to the test environment was investigated by micro-Raman, which demonstrated a repeated change from hexagonal MoS2 to graphite carbon in the wear track with each dry/humid environment cycle. Solid lubricant composition inside the micro-reservoirs did not change. [Copyright &y& Elsevier] AB - Copyright of Wear is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LUBRICATION & lubricants KW - BEARINGS (Machinery) KW - TESTING KW - OVERPRODUCTION KW - Environment adaptation KW - Hard coating KW - Laser surface texturing KW - Low friction KW - Solid lubricant N1 - Accession Number: 23164909; Voevodin, A.A.; Email Address: andrey.voevodin@wpafb.af.mil Zabinski, J.S. 1; Affiliation: 1: MLBT, Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, OH 45433–7750, United States; Source Info: Dec2006, Vol. 261 Issue 11/12, p1285; Subject Term: LUBRICATION & lubricants; Subject Term: BEARINGS (Machinery); Subject Term: TESTING; Subject Term: OVERPRODUCTION; Author-Supplied Keyword: Environment adaptation; Author-Supplied Keyword: Hard coating; Author-Supplied Keyword: Laser surface texturing; Author-Supplied Keyword: Low friction; Author-Supplied Keyword: Solid lubricant; NAICS/Industry Codes: 423840 Industrial Supplies Merchant Wholesalers; NAICS/Industry Codes: 332991 Ball and Roller Bearing Manufacturing; NAICS/Industry Codes: 324191 Petroleum Lubricating Oil and Grease Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.wear.2006.03.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23164909&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucht, Robert P. AU - Roy, Sukesh AU - Meyer, Terrence R. AU - Gord, James R. T1 - Femtosecond coherent anti-Stokes Raman scattering measurement of gas temperatures from frequency-spread dephasing of the Raman coherence. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/12/18/ VL - 89 IS - 25 M3 - Article SP - 251112 PB - American Institute of Physics SN - 00036951 AB - Gas-phase temperatures and concentrations are measured from the magnitude and decay of the initial Raman coherence in femtosecond coherent anti-Stokes Raman scattering (CARS). A time-delayed probe beam is scattered from the Raman polarization induced by pump and Stokes beams to generate CARS signal; the dephasing rate of this initial coherence is determined by the temperature-sensitive frequency spread of the Raman transitions. Temperature is measured from the CARS signal decrease with increasing probe delay. Concentration is found from the ratio of the CARS and nonresonant background signals. Collision rates do not affect the determination of these quantities. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN spectroscopy KW - GASES -- Spectra KW - TRANSITION temperature KW - COLLISIONS (Nuclear physics) KW - RAMAN effect KW - OPTICAL polarization N1 - Accession Number: 23573242; Lucht, Robert P. 1; Email Address: lucht@purdue.edu Roy, Sukesh 2 Meyer, Terrence R. 3 Gord, James R. 4; Affiliation: 1: School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907 2: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, Oklahoma 45440 3: Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011 4: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, Oklahoma 45433; Source Info: 12/18/2006, Vol. 89 Issue 25, p251112; Subject Term: RAMAN spectroscopy; Subject Term: GASES -- Spectra; Subject Term: TRANSITION temperature; Subject Term: COLLISIONS (Nuclear physics); Subject Term: RAMAN effect; Subject Term: OPTICAL polarization; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.2410237 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23573242&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Giles, N. C. AU - Xu, Chunchuan AU - Callahan, M. J. AU - Wang, Buguo AU - Neal, J. S. AU - Boatner, L. A. T1 - Effects of phonon coupling and free carriers on band-edge emission at room temperature in n-type ZnO crystals. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/12/18/ VL - 89 IS - 25 M3 - Article SP - 251906 PB - American Institute of Physics SN - 00036951 AB - Room-temperature photoluminescence has been studied in n-type bulk ZnO crystals representing three different growth methods and having free-carrier concentrations (n) ranging from 1013 to 1018 cm-3. The near-band-edge emission has both free-exciton and free-exciton-phonon contributions, with the strength of the phonon coupling dependent on sample defect concentrations. Band-gap shrinkage effects are used to explain a decrease in emission energy for the higher n values. Band filling and band nonparabolicity are predicted to be important for n>1019 cm-3. At 300 K, in the absence of free carriers, the free-exciton energy is 3.312±0.004 eV. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOLUMINESCENCE KW - CRYSTAL defects KW - ZINC oxide KW - PHONONS KW - CHARGE transfer KW - ENERGY bands N1 - Accession Number: 23573283; Giles, N. C. 1; Email Address: nancy.giles@mail.wvu.edu Xu, Chunchuan 1 Callahan, M. J. 2 Wang, Buguo 2 Neal, J. S. 3 Boatner, L. A. 4; Affiliation: 1: Physics Department, West Virginia University, Morgantown, West Virginia 26506 2: Air Force Research Laboratory, Sensors Directorate, Hanscom Air Force Base, Massachusetts 01731 3: Center for Radiation Detection Materials and Systems, and Nuclear Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 4: Center for Radiation Detection Materials and Systems, and Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831; Source Info: 12/18/2006, Vol. 89 Issue 25, p251906; Subject Term: PHOTOLUMINESCENCE; Subject Term: CRYSTAL defects; Subject Term: ZINC oxide; Subject Term: PHONONS; Subject Term: CHARGE transfer; Subject Term: ENERGY bands; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.2410225 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23573283&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Starks, M.J. AU - Cooke, D.L. AU - Dichter, B.K. AU - Chhabildas, L.C. AU - Reinhart, W.D. AU - Thornhill, T.F. T1 - Seeking radio emissions from hypervelocity micrometeoroid impacts: Early experimental results from the ground JO - International Journal of Impact Engineering JF - International Journal of Impact Engineering Y1 - 2006/12/15/ VL - 33 IS - 1-12 M3 - Article SP - 781 EP - 787 SN - 0734743X AB - Abstract: High-velocity impact experiments have been conducted to look for radio frequency (RF) emissions from impact-produced plasmas that could be used to identify micrometeoroid impacts to spacecraft in orbit. Launched by a three-stage light gas gun, 17mm diameter by 0.9mm thick Ti6Al-4V flyer plates impacted 0.75mm thick indium (In) foil at more than 10kms−1. The resulting collision presumably ionized some fraction of the vaporized In cloud, which was accelerated to about 12kms−1. This weak In plasma then passed through a wide-band detection system that looked for RF emissions. Over the course of five shots during the experiment, no conclusive plasma emissions from the In were detected. However, strong evidence indicates that significant charge is accumulated on the flyer plate during acceleration and flight, possibly producing Paschen discharge to the chamber walls. Finally, plasma may be produced by the launcher secondary to launching the plate, leading to further contamination of the results. These effects have significant consequences for RF experiments attempted in launching systems of this type. [Copyright &y& Elsevier] AB - Copyright of International Journal of Impact Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO frequency KW - EMISSIONS (Air pollution) KW - SPACE vehicles KW - INDIUM KW - Hypervelocity KW - Impact plasma KW - Micrometeoroid N1 - Accession Number: 23363422; Starks, M.J. 1; Email Address: michael.starks@hanscom.af.mil Cooke, D.L. 1 Dichter, B.K. 1 Chhabildas, L.C. 2 Reinhart, W.D. 2 Thornhill, T.F. 2; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, VSBXI, 29 Randolph Rd, Hanscom AFB, MA 01731, USA 2: Shock Physics Applications Department, Box 5800, MS1181, Sandia National Laboratories, Albuquerque, NM 87185, USA; Source Info: Dec2006, Vol. 33 Issue 1-12, p781; Subject Term: RADIO frequency; Subject Term: EMISSIONS (Air pollution); Subject Term: SPACE vehicles; Subject Term: INDIUM; Author-Supplied Keyword: Hypervelocity; Author-Supplied Keyword: Impact plasma; Author-Supplied Keyword: Micrometeoroid; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijimpeng.2006.09.044 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23363422&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H. J. AU - Mahalingam, K. AU - Brown, G. J. AU - Mitchel, W. C. AU - Ullrich, B. AU - Grazulis, L. AU - Elhamri, S. AU - Wickett, J. C. AU - Stokes, D. W. T1 - Growth of short-period InAs/GaSb superc. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2006/12/15/ VL - 100 IS - 12 M3 - Article SP - 123110 EP - N.PAG PB - American Institute of Physics SN - 00218979 AB - The purpose of this work is to explore materials for midinfrared detectors that can operate at room temperature. Shorter-period InAs/GaSb superlattices (SLs) have larger intervalance band separations, which are beneficial for reducing Auger recombination and tunneling current, thus making room temperature operation possible. To test these possibilities, several short-period SLs ranging from 50 to 11 Å were grown and their morphological properties were carefully monitored by transmission electron microscopy. The effect of structural degradation caused by the period reduction on the optical properties was studied using low-temperature photoluminescence (PL). The samples with larger periods (50–32 Å) showed excellent structural qualities and produced narrow full width at half maximum (FWHM) of the PL peak (5 meV). As the period approached 24 Å, slight layer thickness undulations within the SLs were observed and these undulations intensified as the period further reduced to 17 Å. These structural degradations strongly influence optical properties causing significant broadening in the FWHM and higher residual carrier concentration in the shorter-period SLs. With slower growth rates, samples with periods as thin as 19 Å were grown without significant layer undulations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - INDIUM arsenide KW - THIN films KW - STRUCTURAL dynamics KW - TRANSMISSION electron microscopy KW - PHOTOLUMINESCENCE N1 - Accession Number: 23624497; Haugan, H. J. 1; Email Address: heather.haugan@wpafb.afrl.mil Mahalingam, K. 1 Brown, G. J. 1 Mitchel, W. C. 1 Ullrich, B. 1 Grazulis, L. 1 Elhamri, S. 2 Wickett, J. C. 3 Stokes, D. W. 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433-7707 2: Department of Physics, University of Dayton, Dayton, Ohio 45469-2314 3: Department of Physics, University of Houston, Texas 77204-5005; Source Info: 12/15/2006, Vol. 100 Issue 12, p123110; Subject Term: SUPERLATTICES; Subject Term: INDIUM arsenide; Subject Term: THIN films; Subject Term: STRUCTURAL dynamics; Subject Term: TRANSMISSION electron microscopy; Subject Term: PHOTOLUMINESCENCE; Number of Pages: 5p; Illustrations: 2 Black and White Photographs, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.2401280 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23624497&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kiet A. Nguyen AU - Joy E. Rogers AU - Jonathan E. Slagle AU - Paul N. Day AU - Ramamurthi Kannan AU - Loon-Seng Tan AU - Paul A. Fleitz AU - Ruth Pachter T1 - Effects of Conjugation in Length and Dimension on Spectroscopic Properties of Fluorene-Based Chromophores from Experiment and Theory. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2006/12/14/ VL - 110 IS - 49 M3 - Article SP - 13172 EP - 13182 SN - 10895639 AB - A series of one-photon absorption spectra for fluorene-based donor--acceptor molecules is presented and spectroscopically assigned, based upon the results obtained from time-dependent density functional theory. The computed excitation energies were generally shown to be in good agreement with experiment, particularly when compared to results from measurements carried out in a nonpolar solvent, which were available for some molecules. The computed oscillator strengths may resolve discordant experimental values in some cases, for example, for AF-380, AF-270, and AF-295. However, a quantitative comparison between computed and observed oscillator strengths is complicated by band overlapping. Thus, the computed extinction coefficients obtained by summing over the Gaussian bands are useful in such cases. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSORPTION spectra KW - FUNCTIONAL analysis KW - SPECTRUM analysis KW - FUNCTIONAL equations N1 - Accession Number: 23618892; Kiet A. Nguyen 1 Joy E. Rogers 1 Jonathan E. Slagle 1 Paul N. Day 1 Ramamurthi Kannan 1 Loon-Seng Tan 1 Paul A. Fleitz 1 Ruth Pachter 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory,Wright Patterson Air Force Base, Ohio 45433; Source Info: Dec2006, Vol. 110 Issue 49, p13172; Subject Term: ABSORPTION spectra; Subject Term: FUNCTIONAL analysis; Subject Term: SPECTRUM analysis; Subject Term: FUNCTIONAL equations; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23618892&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stello, D. AU - Arentoft, T. AU - Bedding, T. R. AU - Bouzid, M. Y. AU - Bruntt, H. AU - Csubry, Z. AU - Dall, T. H. AU - Dind, Z. E. AU - Frandsen, S. AU - Gilliland, R. L. AU - Jacob, A. P. AU - Jensen, H. R. AU - Kangd, Y. B. AU - Kim, S.-L. AU - Kiss, L. L. AU - Kjeldsen, H. AU - Koo, J.-R. AU - Lee, J.-A. AU - Lee, C.-U. AU - Nuspl, J. T1 - Multisite campaign on the open cluster M67 – I. Observations and photometric reductions. JO - Monthly Notices of the Royal Astronomical Society JF - Monthly Notices of the Royal Astronomical Society Y1 - 2006/12/11/ VL - 373 IS - 3 M3 - Article SP - 1141 EP - 1150 PB - Oxford University Press / USA SN - 00358711 AB - We report on an ambitious multisite campaign aimed at detecting stellar variability, particularly solar-like oscillations, in the red giant stars in the open cluster M67 (NGC 2682). During the six-week observing run, which comprised 164 telescope nights, we used nine 0.6-m to 2.1-m class telescopes located around the world to obtain uninterrupted time series photometry. We outline here the data acquisition and reduction, with emphasis on the optimization of the signal-to-noise ratio of the low-amplitude (50–500 μmag) solar-like oscillations. This includes a new and efficient method for obtaining the linearity profile of the CCD response at ultrahigh precision (∼10 parts per million). The noise in the final time series is 0.50 mmag per minute integration for the best site, while the noise in the Fourier spectrum of all sites combined is 20 μmag. In addition to the red giant stars, this data set proves to be very valuable for studying high-amplitude variable stars such as eclipsing binaries, W UMa systems and δ Scuti stars. [ABSTRACT FROM AUTHOR] AB - Copyright of Monthly Notices of the Royal Astronomical Society is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RED giants KW - VARIABLE stars KW - STAR clusters KW - STELLAR activity KW - ASTROPHYSICS KW - ASTRONOMY KW - δScuti KW - δ Scuti KW - blue stragglers KW - open clusters and associations: individual: M67 (NGC 2682) KW - stars: oscillations KW - stars: variables: other KW - techniques: photometric N1 - Accession Number: 23408409; Stello, D. 1,2,3; Email Address: stello@physics.usyd.edu.au Arentoft, T. 1,2,4 Bedding, T. R. 2 Bouzid, M. Y. 5 Bruntt, H. 1,2,3 Csubry, Z. 6 Dall, T. H. 7 Dind, Z. E. 2 Frandsen, S. 1,4 Gilliland, R. L. 8 Jacob, A. P. 2 Jensen, H. R. 1 Kangd, Y. B. 9 Kim, S.-L. 9 Kiss, L. L. 2 Kjeldsen, H. 1,4 Koo, J.-R. 9 Lee, J.-A. 9 Lee, C.-U. 9 Nuspl, J. 6; Affiliation: 1: Institut for Fysik og Astronomi (IFA), Aarhus Universitet, 8000 Aarhus, Denmark 2: School of Physics, University of Sydney, NSW 2006, Australia 3: Department of Physics, US Air Force Academy, Colorado Springs, CO 80840, USA 4: Danish Asteroseismology Centre, Aarhus Universitet, DK-8000 Aarhus, Denmark 5: Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium 6: Konkoly Observatory of the Hungarian Academy of Sciences, 1525 Budapest, PO Box 67, Hungary 7: European Southern Observatory, Casilla 19001, Santiago 19, Chile 8: Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, USA 9: Korea Astronomy and Space Science Institute, Daejeon 305-348, Korea; Source Info: 12/11/2006, Vol. 373 Issue 3, p1141; Subject Term: RED giants; Subject Term: VARIABLE stars; Subject Term: STAR clusters; Subject Term: STELLAR activity; Subject Term: ASTROPHYSICS; Subject Term: ASTRONOMY; Author-Supplied Keyword: δScuti; Author-Supplied Keyword: δ Scuti; Author-Supplied Keyword: blue stragglers; Author-Supplied Keyword: open clusters and associations: individual: M67 (NGC 2682); Author-Supplied Keyword: stars: oscillations; Author-Supplied Keyword: stars: variables: other; Author-Supplied Keyword: techniques: photometric; Number of Pages: 10p; Illustrations: 2 Diagrams, 2 Charts, 11 Graphs; Document Type: Article L3 - 10.1111/j.1365-2966.2006.11060.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23408409&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shellhamer, Dale F. AU - Gleason, David C. AU - Rodriguez, Sean J. AU - Heasley, Victor L. AU - Boatz, Jerry A. AU - Lehman, Jeffrey J. T1 - Correlation of calculated halonium ion structures with product distributions from fluorine substituted terminal alkenes JO - Tetrahedron JF - Tetrahedron Y1 - 2006/12/11/ VL - 62 IS - 50 M3 - Article SP - 11608 EP - 11617 SN - 00404020 AB - Abstract: Calculated equilibrium geometries, bond lengths, and charge densities were performed on halonium ions derived by the addition of halogen electrophiles to fluoro-substituted terminal alkenes. The calculated structures correlate with regiochemical product distributions from ring-opening of halonium ions by anions or by the solvent methanol. Calculated halonium ion structures and the Hammond postulate are utilized to predict the regiochemical product distributions for reactions of halogens with fluoroalkenes that are not investigated experimentally. [Copyright &y& Elsevier] AB - Copyright of Tetrahedron is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERMEDIATES (Chemistry) KW - MATTER -- Properties KW - SOLUTION (Chemistry) KW - IONS KW - ELECTRONS KW - Computations KW - Fluorine substituents KW - Halonium ions KW - Symmetry N1 - Accession Number: 22962487; Shellhamer, Dale F. 1; Email Address: dshellha@ptloma.edu Gleason, David C. 1 Rodriguez, Sean J. 1 Heasley, Victor L. 1 Boatz, Jerry A. 2 Lehman, Jeffrey J. 3; Affiliation: 1: Department of Chemistry, Point Loma Nazarene University, San Diego, CA 92106-2899, USA 2: Air Force Research Laboratory, Edwards Air Force Base, CA 93524-7680, USA 3: Department of Chemistry, Grossmont College, El Cajon, CA 92020, USA; Source Info: Dec2006, Vol. 62 Issue 50, p11608; Subject Term: INTERMEDIATES (Chemistry); Subject Term: MATTER -- Properties; Subject Term: SOLUTION (Chemistry); Subject Term: IONS; Subject Term: ELECTRONS; Author-Supplied Keyword: Computations; Author-Supplied Keyword: Fluorine substituents; Author-Supplied Keyword: Halonium ions; Author-Supplied Keyword: Symmetry; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.tet.2006.09.071 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22962487&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eapen, Kalathil C. AU - Smallwood, Steven A. AU - Zabinski, Jeffrey S. T1 - Lubrication of MEMS under vacuum JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2006/12/04/ VL - 201 IS - 6 M3 - Article SP - 2960 EP - 2969 SN - 02578972 AB - Abstract: The concept of replenishing lubrication provided by a pair of bound/mobile hydrocarbon-based lubricants has been extended to silicon-based MEMS in vacuum (∼1.3×10−4 Pa). Several bound/mobile pairs of lubricants were evaluated to study the effects of bound phase end-group and mobile phase chemical functionality towards performance. The bound species studied were derived from 1-decanol and 1,7-heptanediol. Mobile phases investigated were, a pentaerythritol ester, a multiply alkylated cyclopentane, Pennzane®, and a polysilane developed for spacecraft application. Lubricant performance was compared with data generated in dry air earlier, and also with fresh Fomblin Zdol® under identical conditions of vacuum. The best performance from among those studied was provided by a mixture of bound 1,7-heptanediol and the pentaerythritol ester. An explanation for its superior performance is advanced based on intermolecular hydrogen bonding. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LUBRICATION & lubricants KW - TRIBOLOGY KW - VACUUM KW - HYDROGEN bonding KW - Hydrocarbons KW - Lubrication in vacuum KW - MEMS KW - Replenishment N1 - Accession Number: 23162987; Eapen, Kalathil C. 1; Email Address: kalathil.eapen@wpafb.af.mil Smallwood, Steven A. 2 Zabinski, Jeffrey S. 3; Email Address: jeffrey.zabinsky@wpafb.af.mil; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469-0168, USA 2: Universal Technology Corporation, Dayton, OH 45432-2600, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright–Patterson AFB, OH 45433-7750, USA; Source Info: Dec2006, Vol. 201 Issue 6, p2960; Subject Term: LUBRICATION & lubricants; Subject Term: TRIBOLOGY; Subject Term: VACUUM; Subject Term: HYDROGEN bonding; Author-Supplied Keyword: Hydrocarbons; Author-Supplied Keyword: Lubrication in vacuum; Author-Supplied Keyword: MEMS; Author-Supplied Keyword: Replenishment; NAICS/Industry Codes: 324191 Petroleum Lubricating Oil and Grease Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.surfcoat.2006.06.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23162987&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gorokhovsky, V. AU - Bowman, C. AU - Gannon, P. AU - VanVorous, D. AU - Voevodin, A.A. AU - Rutkowski, A. AU - Muratore, C. AU - Smith, R.J. AU - Kayani, A. AU - Gelles, D. AU - Shutthanandan, V. AU - Trusov, B.G. T1 - Tribological performance of hybrid filtered arc-magnetron coatings: Part I: Coating deposition process and basic coating properties characterization JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2006/12/04/ VL - 201 IS - 6 M3 - Article SP - 3732 EP - 3747 SN - 02578972 AB - Abstract: Aircraft propulsion applications require low-friction and wear resistant surfaces that operate under high contact loads in severe environments. Recent research on supertough and low friction nanocomposite coatings produced with hybrid plasma deposition processes was demonstrated to have a high potential for such demanding applications. However, industrially scalable hybrid plasma technologies are needed for their commercial realization. The Large area Filtered Arc Deposition (LAFAD) process provides atomically smooth coatings at high deposition rates over large surface areas. The LAFAD technology allows functionally graded, multilayer, super-lattice and nanocomposite architectures of multi-elemental coatings via electro-magnetic mixing of two plasma flows composed of different metal ion vapors. Further advancement can be realized through a combinatorial process using a hybrid filtered arc-magnetron deposition system. In the present study, multilayer and nanostructured TiCrCN/TiCr+TiBC composite cermet coatings were deposited by the hybrid filtered arc-magnetron process. Filtered plasma streams from arc evaporated Ti and Cr targets, and two unbalanced magnetron sputtered B4C targets, were directed to the substrates in the presence of reactive gases. A multiphase nanocomposite coating architecture was designed to provide the optimal combination of corrosion and wear resistance of advanced steels (Pyrowear 675) used in aerospace bearing and gear applications. Coatings were characterized using SEM/EDS, XPS and RBS for morphology and chemistry, XRD and TEM for structural analyses, wafer curvature and nanoindentation for stress and mechanical properties, and Rockwell and scratch indentions for adhesion. Coating properties were evaluated for a variety of coating architectures. Thermodynamic modeling was used for estimation of phase composition of the top TiBC coating segment. Correlations between coating chemistry, structure and mechanical properties are discussed. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FINISHES & finishing KW - COATING processes KW - FRICTION KW - SURFACES (Technology) KW - THIN films KW - Aerospace KW - Coatings KW - Filtered arc KW - Magnetron KW - Nanocomposite KW - Thermodynamics N1 - Accession Number: 23163087; Gorokhovsky, V. 1; Email Address: vigase@aol.com Bowman, C. 1 Gannon, P. 1 VanVorous, D. 1 Voevodin, A.A. 2 Rutkowski, A. 2 Muratore, C. 3 Smith, R.J. 4 Kayani, A. 4 Gelles, D. 5 Shutthanandan, V. 5 Trusov, B.G. 6; Affiliation: 1: Arcomac Surface Engineering, LLC., Bozeman, Montana, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio, USA 3: UTC Inc./Air Force Research Laboratory, Wright-Patterson AFB, Ohio, USA 4: Montana State University, Bozeman, Montana, USA 5: Pacific Northwest National Laboratory, Richland, Washington, USA 6: Bauman Moscow State Technical University, Moscow, Russia; Source Info: Dec2006, Vol. 201 Issue 6, p3732; Subject Term: FINISHES & finishing; Subject Term: COATING processes; Subject Term: FRICTION; Subject Term: SURFACES (Technology); Subject Term: THIN films; Author-Supplied Keyword: Aerospace; Author-Supplied Keyword: Coatings; Author-Supplied Keyword: Filtered arc; Author-Supplied Keyword: Magnetron; Author-Supplied Keyword: Nanocomposite; Author-Supplied Keyword: Thermodynamics; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 238390 Other Building Finishing Contractors; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.surfcoat.2006.09.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23163087&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Glavicic, M.G. AU - Semiatin, S.L. T1 - X-ray line-broadening investigation of deformation during hot rolling of Ti–6Al–4V with a colony-alpha microstructure JO - Acta Materialia JF - Acta Materialia Y1 - 2006/12// VL - 54 IS - 20 M3 - Article SP - 5337 EP - 5347 SN - 13596454 AB - Abstract: X-ray line-broadening techniques that were previously developed and applied to quantify deformation behavior during the hot rolling of commercial-purity titanium were applied to Ti–6Al–4V plate with a colony-alpha preform microstructure. The work quantified the challenges in using line-broadening techniques for two-phase titanium alloys which undergo a phase transformation during cooling following hot working. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM KW - TITANIUM alloys KW - X-rays KW - TITANIUM group KW - RESEARCH KW - Line broadening KW - Strain partitioning KW - Substructure KW - Texture KW - Titanium N1 - Accession Number: 23052182; Glavicic, M.G.; Email Address: michael.glavicic@wpafb.af.mil Semiatin, S.L. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMP, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Dec2006, Vol. 54 Issue 20, p5337; Subject Term: TITANIUM; Subject Term: TITANIUM alloys; Subject Term: X-rays; Subject Term: TITANIUM group; Subject Term: RESEARCH; Author-Supplied Keyword: Line broadening; Author-Supplied Keyword: Strain partitioning; Author-Supplied Keyword: Substructure; Author-Supplied Keyword: Texture; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.actamat.2006.04.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23052182&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shen, C. AU - Simmons, J.P. AU - Wang, Y. T1 - Effect of elastic interaction on nucleation: I. Calculation of the strain energy of nucleus formation in an elastically anisotropic crystal of arbitrary microstructure JO - Acta Materialia JF - Acta Materialia Y1 - 2006/12// VL - 54 IS - 20 M3 - Article SP - 5617 EP - 5630 SN - 13596454 AB - Abstract: We analyze the anisotropic elastic interaction of a nucleating particle with an arbitrary pre-existing coherent microstructure. Under the assumption that the length scale of the microstructure is considerably larger than the size of the nucleus, their elastic interaction energy can be expressed as a linear function of the nucleus’s volume, and combined directly with the chemical nucleation driving force in the classical nucleation theory. Using cubic→cubic and cubic→tetragonal transformations as examples, we evaluate the elastic energy associated with the formation of a nucleus in a pre-existing microstructure. It is found that, similar to other stress-generating crystalline defects, coherent precipitates could have a significant effect on the spatial location of nuclei, resulting in correlated nucleation where the existing particles dictate where the new particles appear. This effect seems to be generic for nucleation in coherent solids and it could be responsible for the formation of self-organized morphological patterns during coherent transformations. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANISOTROPY KW - CRYSTALLOGRAPHY KW - MICROSTRUCTURE KW - MATTER -- Constitution KW - RESEARCH KW - Anisotropic elasticity KW - Microstructure KW - Nucleation KW - Simulation N1 - Accession Number: 23052213; Shen, C. 1 Simmons, J.P. 2 Wang, Y. 1; Email Address: wang.363@osu.edu; Affiliation: 1: Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH 43210, USA 2: Air Force Research Laboratory, AFRL/MLLM, Wright Patterson AFB, OH 45433, USA; Source Info: Dec2006, Vol. 54 Issue 20, p5617; Subject Term: ANISOTROPY; Subject Term: CRYSTALLOGRAPHY; Subject Term: MICROSTRUCTURE; Subject Term: MATTER -- Constitution; Subject Term: RESEARCH; Author-Supplied Keyword: Anisotropic elasticity; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Nucleation; Author-Supplied Keyword: Simulation; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.actamat.2006.08.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23052213&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mall, S. AU - Jin, O. AU - Yuksel, H. AU - Calcaterra, J. R. T1 - FRETTING FATIGUE BEHAVIOR OF SHOT-PEENED Ti-6A1-4V. JO - Arabian Journal for Science & Engineering, Section C: Theme Issues JF - Arabian Journal for Science & Engineering, Section C: Theme Issues Y1 - 2006/12// VL - 31 IS - 2C M3 - Article SP - 49 EP - 62 AB - Fretting fatigue behavior of shot-peened, titanium alloy (Ti-6AI-4V) specimens of two thicknesses was investigated at room temperature. Fretting fatigue life diagrams were established with and without shot-peening. Shot-peening improved fretting fatigue life of Ti-6AI-4V. X-ray diffraction method was used to measure residual compressive stresses from shot-peening before and after fretting fatigue. Variation in the thickness of shot-peened specimens changed residual stresses at and away from the contact surface, and hence changed the crack initiation location, which was at the contact surface in thicker specimens but below the contact surface in the thinner specimens. Further, there was relaxation of residual compressive stresses during fretting fatigue. Finite element analysis of fretting fatigue specimens was also conducted. Modified shear stress range parameter, a critical plane based fatigue model/criterion, was used to characterize fretting fatigue crack initiation behavior of the shot-peened specimens. This was found to be an appropriate fatigue parameter that could be used to predict number of cycles to crack initiation, crack initiation location (on fretting surface as well as fracture surface), and initial crack orientation of shot-peened fretting fatigue specimens. [ABSTRACT FROM AUTHOR] AB - Copyright of Arabian Journal for Science & Engineering, Section C: Theme Issues is the property of Arabian Journal for Science & Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRETTING corrosion KW - TITANIUM alloys -- Fatigue KW - METALS -- Heat treatment KW - SHOT peening KW - STRAINS & stresses (Mechanics) KW - STRENGTH of materials KW - FINITE element method KW - SURFACE hardening KW - Contact Mechanics KW - Finite element analysis KW - Fretting Fatigue KW - Shot-peening KW - Titanium alloy N1 - Accession Number: 25532440; Mall, S. 1; Email Address: Shankar.Mall@afit.edu Jin, O. 1 Yuksel, H. 1 Calcaterra, J. R. 2; Affiliation: 1: Department of Aeronautics and Astronautics Air Force institute of Technology 2950 Hobson Way Wright-Patterson Air Force Base, OH 45433- 7765, USA 2: Materials and Manufacturing Directorate Air Force Research Laboratory Wright Patterson AFB, OH 45433-7817, USA; Source Info: Dec2006, Vol. 31 Issue 2C, p49; Subject Term: FRETTING corrosion; Subject Term: TITANIUM alloys -- Fatigue; Subject Term: METALS -- Heat treatment; Subject Term: SHOT peening; Subject Term: STRAINS & stresses (Mechanics); Subject Term: STRENGTH of materials; Subject Term: FINITE element method; Subject Term: SURFACE hardening; Author-Supplied Keyword: Contact Mechanics; Author-Supplied Keyword: Finite element analysis; Author-Supplied Keyword: Fretting Fatigue; Author-Supplied Keyword: Shot-peening; Author-Supplied Keyword: Titanium alloy; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; Number of Pages: 14p; Illustrations: 3 Black and White Photographs, 10 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25532440&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hongbin Wang AU - Bello, Paul T1 - Ritualized behavior as a domain-general choice of actions. JO - Behavioral & Brain Sciences JF - Behavioral & Brain Sciences Y1 - 2006/12// VL - 29 IS - 6 M3 - Article SP - 633 EP - 634 SN - 0140525X AB - Although we agree that ritualized behavior is a mystery that calls out for an explanation, we do not think that the proposed domain-specific two-component system offers an empirically well-justified and theoretically parsimonious description of the phenomena. Instead, we believe that the deployment of domain-general mechanisms based on choice of actions could also explain the essential features of ritualized behavior. [ABSTRACT FROM AUTHOR] AB - Copyright of Behavioral & Brain Sciences is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RITUAL KW - BEHAVIOR KW - SOCIAL choice KW - SOCIAL psychology KW - CHOICE (Psychology) N1 - Accession Number: 24401640; Hongbin Wang 1; Email Address: Hongbin.Wang@uth.tmc.edu Bello, Paul 2; Email Address: Pello.Bello@rl.af.mil; Affiliation: 1: School of Health Information Sciences, University of Texas Health Sciences Center, Houston, Houston, TX 2: Air Force Research Laboratory, Information Directorate, Rome, NY; Source Info: Dec2006, Vol. 29 Issue 6, p633; Subject Term: RITUAL; Subject Term: BEHAVIOR; Subject Term: SOCIAL choice; Subject Term: SOCIAL psychology; Subject Term: CHOICE (Psychology); Number of Pages: 2p; Document Type: Article L3 - 10.1017/S0140525X06009551 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24401640&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Seetharaman, Guna AU - Lakhotia, Arun AU - Blasch, Erik Philip T1 - Unmanned Vehicles Come of Age: The DARPA Grand Challenge. JO - Computer (00189162) JF - Computer (00189162) Y1 - 2006/12// VL - 39 IS - 12 M3 - Article SP - 26 EP - 29 SN - 00189162 AB - The article discusses various reports published within the issue including "VisLab and the Evolution of Vision-Based UGVs," by Massimo Bertozzi and "Perception and Planning Architecture for Autonomous ground Vehicles," by Bob Touchton. KW - PREFACES & forewords KW - REMOTELY piloted vehicles N1 - Accession Number: 23555736; Seetharaman, Guna 1; Email Address: guna@ieee.org Lakhotia, Arun 2; Email Address: arun@louisiana.edu Blasch, Erik Philip 3; Email Address: Erik.Blasch@wpafb.af.mil; Affiliation: 1: Air Force Institute of Technology 2: Professor of Computer Science with the Center for Advanced Computer Studies, University of Louisiana, Lafayette 3: Fusion Evaluation Tech Lead for the Air Force Research Laboratory, Sensors Directorate, Dayton, Ohio; Source Info: Dec2006, Vol. 39 Issue 12, p26; Subject Term: PREFACES & forewords; Subject Term: REMOTELY piloted vehicles; Number of Pages: 4p; Illustrations: 1 Color Photograph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23555736&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lombardi, Paolo AU - Zavidovique, Bertrand AU - Talbert, Michael T1 - On the Importance of Being Contextual. (Cover story) JO - Computer (00189162) JF - Computer (00189162) Y1 - 2006/12// VL - 39 IS - 12 M3 - Article SP - 57 EP - 61 SN - 00189162 AB - The article provides information on the importance of being contextual in terms of an unmanned vehicle control performance in the U.S. Vehicles need to be autonomous with effective context interpretation, that is having the continuous understanding and monitoring of the external environment in sensory-based vehicle control systems. The term context is defined to understand deeply on context dependency in practical systems. The advantages of applying context monitoring to unmanned vehicle operation is discussed as well as the context-related features of visual system that affect the performance of computer vision algorithms and the adaptation of the sensing system. KW - REMOTELY piloted vehicles KW - VEHICLES KW - ARTIFICIAL intelligence -- Software KW - COMPUTER vision KW - ROBOT vision KW - PATTERN recognition systems KW - COMPUTER software KW - UNITED States N1 - Accession Number: 23555743; Lombardi, Paolo 1; Email Address: paol.lombardi@jrc.it Zavidovique, Bertrand 2; Email Address: bertrand.zavidovique@iefu-psud.fr Talbert, Michael 3; Email Address: michael.talbert@wpafb.af.mil; Affiliation: 1: Postdoctoral Fellow, European Commission Joint Research Centre Institute for the Protection and Security of the Citizen (IPSC), Ispra, Italy 2: Professor of Electrical Engineering, Institut d'Electronique Fondamentale, University of Paris XI 3: Researcher, US Air Force Research Laboratory, Information Directorate, Wright-Patterson AFB, Ohio; Source Info: Dec2006, Vol. 39 Issue 12, p57; Subject Term: REMOTELY piloted vehicles; Subject Term: VEHICLES; Subject Term: ARTIFICIAL intelligence -- Software; Subject Term: COMPUTER vision; Subject Term: ROBOT vision; Subject Term: PATTERN recognition systems; Subject Term: COMPUTER software; Subject Term: UNITED States; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); Number of Pages: 5p; Illustrations: 1 Color Photograph, 1 Diagram, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23555743&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Greco, M. AU - Gini, F. AU - Rangaswamy, M. T1 - Statistical analysis of measured polarimetric clutter data at different range resolutions. JO - IEE Proceedings -- Radar, Sonar & Navigation JF - IEE Proceedings -- Radar, Sonar & Navigation Y1 - 2006/12// VL - 153 IS - 6 M3 - Article SP - 473 EP - 481 PB - Institution of Engineering & Technology SN - 13502395 AB - This paper deals with the statistical modelling of radar backscattering from sea surface at low-grazing angles in high resolution radar systems. High-resolution polarimetric data at different range resolutions (60, 30, 15, 9 and 3 m) are analysed to highlight the differences in clutter statistical behaviour due to changes of resolution and/or polarisation. The clutter data were recorded by the IPIX radar of McMaster University in Grimsby, Ontario, Canada. [ABSTRACT FROM AUTHOR] AB - Copyright of IEE Proceedings -- Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR KW - POLARIMETRY KW - STATISTICS KW - RESOLUTION (Optics) KW - BACKSCATTERING N1 - Accession Number: 23022064; Greco, M. 1; Email Address: m.greco@iet.unipi.it Gini, F. 1 Rangaswamy, M. 2; Affiliation: 1: Universitá di Pisa, Dipartimento di Ingegneria dell'Informazione, Pisa, Italia 2: Air Force Research Laboratory Sensors Directorate, USA; Source Info: Dec2006, Vol. 153 Issue 6, p473; Subject Term: RADAR; Subject Term: POLARIMETRY; Subject Term: STATISTICS; Subject Term: RESOLUTION (Optics); Subject Term: BACKSCATTERING; Number of Pages: 9p; Illustrations: 1 Diagram, 7 Charts, 18 Graphs; Document Type: Article L3 - 10.1049/ip-rsn:20060045 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23022064&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hansen, Thorkild B. AU - Marr, Richard A. AU - Lammers, Uve H. W. AU - Tanigawa, Timothy J. AU - McGahan, Robert V. T1 - Bistatic RCS Calculations From Cylindrical Near-Field Measurements—Part I: Theory. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2006/12// VL - 54 IS - 12 M3 - Article SP - 3846 EP - 3856 SN - 0018926X AB - A theory is presented for computing scattered far fields of targets from cylindrical near-field measurements. The targets are illuminated by plane waves and measured in a radio anechoic chamber on a cylindrical scan surface. The scattered field on the scan cylinder is obtained by background subtraction. The near-field data is truncated at the top, bottom, and angular edges of the scan cylinder. These truncation edges can cause inaccuracies in the computed far fields. Correction techniques are developed for the top and bottom truncation edges. The cylindrical wave expansions automatically apply angular tapers to the near-field data that reduce the effect of the angular truncation edges. The taper functions depend on the angular sample spacing and are related to the currents induced on perfectly electrically conducting PEC cylinders in related scattering problems. The method of stationary phase is employed with asymptotic expressions for the taper functions to determine the area on the scan cylinder that is most important for computing the far field in a given direction. The theory is validated through numerical examples involving electrically large scatterers. The edge-correction techniques significantly increase the accuracy of the computed far field. A companion paper presents experimental results. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEAR-fields KW - RADAR cross sections KW - ANECHOIC chambers KW - BISTATIC radar KW - ELECTROMAGNETIC fields KW - MAGNETIC dipoles KW - MAGNETIC fields KW - Edge correction KW - near-field scanning KW - radar cross sections KW - taper functions N1 - Accession Number: 23617480; Hansen, Thorkild B. 1; Email Address: thorkild.hansen@att.net Marr, Richard A. 2 Lammers, Uve H. W. 3 Tanigawa, Timothy J. 2 McGahan, Robert V. 2; Affiliation: 1: Seknion Inc., Boston, MA 02115 USA consulting at the Air Force Research Laboratory, Hanscom AFB, MA 01731 USA 2: Air Force Research Laboratory, Hanscom AFB, MA 01731 USA 3: Air Force Research Laboratory, Sensors Directorate, Dayton, 01–2 45433 USA; Source Info: Dec2006, Vol. 54 Issue 12, p3846; Subject Term: NEAR-fields; Subject Term: RADAR cross sections; Subject Term: ANECHOIC chambers; Subject Term: BISTATIC radar; Subject Term: ELECTROMAGNETIC fields; Subject Term: MAGNETIC dipoles; Subject Term: MAGNETIC fields; Author-Supplied Keyword: Edge correction; Author-Supplied Keyword: near-field scanning; Author-Supplied Keyword: radar cross sections; Author-Supplied Keyword: taper functions; Number of Pages: 11p; Illustrations: 5 Black and White Photographs, 2 Diagrams, 8 Graphs; Document Type: Article L3 - 10.1109/TAP.2006.886472 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23617480&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Marr, Richard . AU - Lammers, Uve W. AU - Hansen, Thorkild . AU - Tanigawa, Timothy . AU - McGahan, Robert . T1 - Bistatic RCS Calculations From Cylindrical Near-Field Measurements—Part II: Experiments. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2006/12// VL - 54 IS - 12 M3 - Article SP - 3857 EP - 3864 SN - 0018926X AB - Bistatic radar cross section (RCS) is computed from cylindrical near-field measurements obtained in a radio anechoic chamber with the target illuminated by a compact-range reflector. Near-field measurement is convenient where the RCS of complex targets is not amenable to computation or where computational results require experimental confirmation. A companion paper addresses the theory of cylindrical near-field scanning with reference to our experimental system. RCS of canonical targets derived from near-field measurement are in good agreement with theory. This paper compares the far fields computed from the near-field measurements with numerical solutions. Separating the target-scattered fields from incident and background fields presents a major challenge in an indoor bistatic radar configuration. We discuss the errors introduced by a residue of the incident field that is not canceled by the background subtraction method currently in use. A slow drift in system parameters and probe column oscillations are among the contributing factors. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BISTATIC radar KW - RADAR cross sections KW - SIGNAL processing KW - NEAR-fields KW - ANECHOIC chambers KW - ELECTRIC fields KW - MAGNETIC dipoles KW - Bistatic radar cross sections KW - edge corrections KW - experimental near-field scanning KW - taper functions N1 - Accession Number: 23617481; Marr, Richard . 1 Lammers, Uve W. 2 Hansen, Thorkild . 3; Email Address: thorkild.hansen@att.net Tanigawa, Timothy . 1 McGahan, Robert . 1; Affiliation: 1: Air Force Research Laboratory, Hanscom AFB, MA 01731 USA 2: Air Force Research Laboratory, Sensors Directorate, Dayton, OH 45433 USA 3: Seknion Inc., Boston, MA 02115 USA consulting at the Air Force Research Laboratory, Hanscom AFB, MA 01731 USA; Source Info: Dec2006, Vol. 54 Issue 12, p3857; Subject Term: BISTATIC radar; Subject Term: RADAR cross sections; Subject Term: SIGNAL processing; Subject Term: NEAR-fields; Subject Term: ANECHOIC chambers; Subject Term: ELECTRIC fields; Subject Term: MAGNETIC dipoles; Author-Supplied Keyword: Bistatic radar cross sections; Author-Supplied Keyword: edge corrections; Author-Supplied Keyword: experimental near-field scanning; Author-Supplied Keyword: taper functions; Number of Pages: 8p; Illustrations: 4 Black and White Photographs, 2 Diagrams, 10 Graphs; Document Type: Article L3 - 10.1109/TAP.2006.886482 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23617481&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bents, Robert T. AU - Marsh, Erik T1 - Patterns Of Ephedra and Other Stimulant Use in Collegiate Hockey Athletes. JO - International Journal of Sport Nutrition & Exercise Metabolism JF - International Journal of Sport Nutrition & Exercise Metabolism Y1 - 2006/12// VL - 16 IS - 6 M3 - Article SP - 636 EP - 643 SN - 1526484X AB - This study examined trends in stimulant use and attitudes toward use among American collegiate hockey athletes. All 139 players in one college hockey conference completed a comprehensive questionnaire. Over half of the athletes (51.8%) confirmed stimulant use before a hockey game or practice. About half of the respondents (48.5%) reported having used ephedra at least one time to improve athletic performance. Additionally, 17.4% reported using pseudoephedrine to improve performance in the 30 days prior to survey administration. Over half (55.4%) were aware of the recent national ban on ephedra. Fifty-nine percent stated the national ban made them less likely to use ephedra products. The majority of athletes began use prior to college. Coaches, athletic trainers, and team physicians should be aware of athletes' patterns of stimulant use. Improved educational efforts directed at younger athletes are necessary to deter abuse of metabolic stimulants. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Sport Nutrition & Exercise Metabolism is the property of Human Kinetics Publishers, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STIMULANTS KW - COLLEGE athletes KW - DOPING in sports KW - EPHEDRA KW - COLLEGE hockey KW - SURVEYS KW - QUESTIONNAIRES KW - EPHEDRINE KW - DRUG laws & regulations KW - SUBSTANCE use KW - amphetamines KW - ergogenic aids KW - pseudoephedrine KW - stimulants N1 - Accession Number: 23327268; Bents, Robert T. 1; Email Address: bentsmd@mtashland.net Marsh, Erik 2; Email Address: Erik.Marsh@usafa.af.mil; Affiliation: 1: Orthopedic Center for Sports Medicine in Grants Pass, OR 97527 2: Department of Athletics, United States Air Force Academy, USAF Academy, CO 80840; Source Info: Dec2006, Vol. 16 Issue 6, p636; Subject Term: STIMULANTS; Subject Term: COLLEGE athletes; Subject Term: DOPING in sports; Subject Term: EPHEDRA; Subject Term: COLLEGE hockey; Subject Term: SURVEYS; Subject Term: QUESTIONNAIRES; Subject Term: EPHEDRINE; Subject Term: DRUG laws & regulations; Subject Term: SUBSTANCE use; Author-Supplied Keyword: amphetamines; Author-Supplied Keyword: ergogenic aids; Author-Supplied Keyword: pseudoephedrine; Author-Supplied Keyword: stimulants; NAICS/Industry Codes: 424210 Drugs and Druggists' Sundries Merchant Wholesalers; NAICS/Industry Codes: 414510 Pharmaceuticals and pharmacy supplies merchant wholesalers; NAICS/Industry Codes: 325412 Pharmaceutical Preparation Manufacturing; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; NAICS/Industry Codes: 325411 Medicinal and Botanical Manufacturing; Number of Pages: 8p; Illustrations: 6 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23327268&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, Danhong AU - Rhodes, C. AU - Alsing, P. M. AU - Cardimona, D. A. T1 - Effects of longitudinal field on transmitted near field in doped semi-infinite semiconductors with a surface conducting sheet. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2006/12//12/1/2006 VL - 100 IS - 11 M3 - Article SP - 113711 PB - American Institute of Physics SN - 00218979 AB - A unique structure composed of a half-space of air and a semi-infinite doped bulk GaAs covered by an InAs conducting interface sheet is proposed, from which the physics behind the interplay between the effects of transverse sheet current and the longitudinal three-dimensional plasma waves, as well as the effect of evanescent modes, can be explored. The in-plane and perpendicular components of a transverse field are modified by the inclusion of the InAs conducting sheet and a longitudinal field, and the coupling between transverse and longitudinal oscillations of an electromagnetic field parallel and perpendicular to the conducting sheet is made possible by the doped GaAs bulk. Based on this structure, a spatially nonlocal dynamic theory is derived, including the coupling between the transverse and longitudinal oscillations, the image-potential and retardation effects, and the effects of evanescent modes. The existence of the InAs conducting sheet is found to reduce the transmitted field by reflection from the induced sheet current. The longitudinal field is found to further reduce its strength by absorption from an induced longitudinal three-dimensional plasma wave in the doped GaAs bulk. The transmitted near field is modified by the doped electrons in the GaAs bulk with a relative enhancement at small incident angles being overshadowed by the strong reflection from the induced sheet current in the InAs conducting sheet on the surface. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR doping KW - INTERFACES (Physical sciences) KW - PLASMA (Ionized gases) KW - GALLIUM nitride KW - INDIUM arsenide N1 - Accession Number: 30106519; Huang, Danhong 1 Rhodes, C. 1 Alsing, P. M. 1 Cardimona, D. A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117; Source Info: 12/1/2006, Vol. 100 Issue 11, p113711; Subject Term: SEMICONDUCTOR doping; Subject Term: INTERFACES (Physical sciences); Subject Term: PLASMA (Ionized gases); Subject Term: GALLIUM nitride; Subject Term: INDIUM arsenide; Number of Pages: 10p; Illustrations: 7 Graphs; Document Type: Article L3 - 10.1063/1.2388651 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30106519&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chang, Yong AU - Grein, C. H. AU - Zhao, J. AU - Sivanathan, S. AU - Wang, C. Z. AU - Aoki, T. AU - Smith, David J. AU - Wijewarnasuriya, P. S. AU - Nathan, V. T1 - Improve molecular beam epitaxy growth of HgCdTe on CdZnTe (211)B substrates using interfacial layers of HgTe/CdTe superlattices. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2006/12//12/1/2006 VL - 100 IS - 11 M3 - Article SP - 114316 PB - American Institute of Physics SN - 00218979 AB - HgTe/CdTe superlattices (SLs) have been grown on CdZnTe (211)B substrates as interfacial layers to improve the reproducibility and material properties of epitaxial HgCdTe. The interfacial SL layer is found by transmission electron microscopy to be capable of smoothing out the substrate’s surface roughness and to bend or block threading dislocations from propagating from the substrate into the functional HgCdTe epilayers. The best etch pit density values of 4×104 cm-2 were achieved in long-wavelength infrared HgCdTe epilayers with such interfacial layers, while typical values were in the low 105 cm-2 range. The recombination mechanisms in such layers were dominated by radiative and Auger intrinsic recombination mechanisms, whereas the contributions from the Shockley-Read-Hall mechanism become negligible, which demonstrated that the use of the SL interfacial layers was beneficial for HgCdTe growth using molecular beam epitaxy or MBE. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON microscopy KW - MOLECULAR dynamics KW - SURFACE roughness KW - MOLECULAR beam epitaxy KW - PARTICLES (Nuclear physics) KW - CRYSTAL growth KW - SURFACES (Technology) N1 - Accession Number: 30106443; Chang, Yong 1 Grein, C. H. 1 Zhao, J. 1 Sivanathan, S. 1 Wang, C. Z. 2 Aoki, T. 2 Smith, David J. 2 Wijewarnasuriya, P. S. 3 Nathan, V. 4; Affiliation: 1: Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60607 2: Center for Solid State Science, Arizona State University, Tempe, Arizona 85287 and Department of Physics, Arizona State University, Tempe, Arizona 85287 3: US Army Research Laboratory AMSRL-SE-EI, Adelphi, Maryland 20783 4: Air Force Research Laboratory, Kirtland AFB, New Mexico 87117; Source Info: 12/1/2006, Vol. 100 Issue 11, p114316; Subject Term: ELECTRON microscopy; Subject Term: MOLECULAR dynamics; Subject Term: SURFACE roughness; Subject Term: MOLECULAR beam epitaxy; Subject Term: PARTICLES (Nuclear physics); Subject Term: CRYSTAL growth; Subject Term: SURFACES (Technology); Number of Pages: 6p; Illustrations: 5 Diagrams, 1 Chart, 1 Graph; Document Type: Article L3 - 10.1063/1.2399890 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=30106443&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McHugh, Paul AU - Gwyn, Julian AU - Williams, Glyndwr AU - Bannister, Jerry AU - Brumwell, Stephen AU - Grenier, John AU - Errington, Jane AU - Ward, J. R. AU - Brown, Mervyn AU - Birmingham, David AU - Lineham, Peter AU - McLaren, John AU - Tan Tai Yong AU - Charney, Michael W. AU - MacFie, A. L. AU - MacKenzie, John M. AU - Potter, Simon J. AU - Ghosh, Durba AU - Anderson, Nancy Fix AU - Ansari, Humayun T1 - Book Reviews. JO - Journal of Imperial & Commonwealth History JF - Journal of Imperial & Commonwealth History Y1 - 2006/12// VL - 34 IS - 4 M3 - Book Review SP - 599 EP - 654 PB - Routledge SN - 03086534 AB - The article reviews several books "Masters, Servants and Magistrates in Britain and the Empire, 1562-1955," edited by Douglas Hay and Paul Craven, "The Command of the Ocean: A Naval History of Britain, 1649-1815," by N. A. M. Rodger and "Longitude and Empire: How Captain Cook's Voyages Changed the World," by Brian W. Richardson. KW - NONFICTION KW - HAY, Douglas KW - CRAVEN, Paul KW - RODGER, N. A. M., 1949- KW - RICHARDSON, Brian W. KW - MASTERS, Servants & Magistrates in Britain & the Empire (Book) KW - COMMAND of the Ocean: A Naval History of Britain 1649-1815, The (Book) KW - LONGITUDE & Empire: How Captain Cook's Voyages Changed the World (Book) N1 - Accession Number: 23148526; McHugh, Paul 1 Gwyn, Julian 2 Williams, Glyndwr 3 Bannister, Jerry 4 Brumwell, Stephen Grenier, John 5 Errington, Jane 6 Ward, J. R. 7 Brown, Mervyn Birmingham, David 8 Lineham, Peter 9 McLaren, John 10 Tan Tai Yong 11 Charney, Michael W. 12 MacFie, A. L. MacKenzie, John M. 13 Potter, Simon J. 14 Ghosh, Durba 15 Anderson, Nancy Fix 16 Ansari, Humayun 17; Affiliation: 1: Sidney Sussex College, Cambridge 2: University of Ottawa 3: Queen Mary, University of London 4: Dalhousie University 5: US Air Force Academy 6: Royal Military College, Kingston, Ontario 7: University of Edinburgh 8: University of Kent 9: Massey University, New Zealand 10: University of Victoria 11: National University of Singapore 12: School of Oriental and African Studies 13: University of Lancaster 14: National University of Ireland, Galway 15: Cornell University 16: Loyola University New Orleans 17: Royal Holloway, University of London; Source Info: Dec2006, Vol. 34 Issue 4, p599; Subject Term: NONFICTION; Reviews & Products: MASTERS, Servants & Magistrates in Britain & the Empire (Book); Reviews & Products: COMMAND of the Ocean: A Naval History of Britain 1649-1815, The (Book); Reviews & Products: LONGITUDE & Empire: How Captain Cook's Voyages Changed the World (Book); People: HAY, Douglas; People: CRAVEN, Paul; People: RODGER, N. A. M., 1949-; People: RICHARDSON, Brian W.; Number of Pages: 56p; Document Type: Book Review L3 - 10.1080/03086530600991837 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23148526&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, Martin L. T1 - Thucydides as a Resource for Teaching Ethics and Leadership in Military Education Environments. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2006/12// VL - 5 IS - 4 M3 - Article SP - 353 EP - 362 PB - Routledge SN - 15027570 AB - The author describes a method for teaching Thucydides to military officers in the context of professional military education which integrates military ethics. Using the 'Great Books' method of classroom discussion, the author's experience of teaching Thucydides for five years at the United States Army War College suggests that this is a highly effective method of exploring a wide range of topics in military ethics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Military Ethics is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY ethics KW - CIVIL-military relations KW - MILITARY strategy KW - MORALE KW - EXECUTIVE power KW - civil-military relations KW - classical military strategy KW - Military ethics KW - military strategy KW - Nicias KW - Pericles KW - Thucydides N1 - Accession Number: 24925230; Cook, Martin L. 1; Email Address: martin.cook@usafa.af.mil; Affiliation: 1: Department of Philosophy, United States Air Force Academy, CO, USA; Source Info: Dec2006, Vol. 5 Issue 4, p353; Subject Term: MILITARY ethics; Subject Term: CIVIL-military relations; Subject Term: MILITARY strategy; Subject Term: MORALE; Subject Term: EXECUTIVE power; Author-Supplied Keyword: civil-military relations; Author-Supplied Keyword: classical military strategy; Author-Supplied Keyword: Military ethics; Author-Supplied Keyword: military strategy; Author-Supplied Keyword: Nicias; Author-Supplied Keyword: Pericles; Author-Supplied Keyword: Thucydides; NAICS/Industry Codes: 921110 Executive Offices; Number of Pages: 10p; Document Type: Article L3 - 10.1080/15027570601037707 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24925230&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brungart, Douglas S. AU - Chang, Peter S. AU - Simpson, Brian D. AU - DeLiang Wang T1 - Isolating the energetic component of speech-on-speech masking with ideal time-frequency segregation. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2006/12// VL - 120 IS - 6 M3 - Article SP - 4007 EP - 4018 SN - 00014966 AB - When a target speech signal is obscured by an interfering speech wave form, comprehension of the target message depends both on the successful detection of the energy from the target speech wave form and on the successful extraction and recognition of the spectro-temporal energy pattern of the target out of a background of acoustically similar masker sounds. This study attempted to isolate the effects that energetic masking, defined as the loss of detectable target information due to the spectral overlap of the target and masking signals, has on multitalker speech perception. This was achieved through the use of ideal time-frequency binary masks that retained those spectro-temporal regions of the acoustic mixture that were dominated by the target speech but eliminated those regions that were dominated by the interfering speech. The results suggest that energetic masking plays a relatively small role in the overall masking that occurs when speech is masked by interfering speech but a much more significant role when speech is masked by interfering noise. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPEECH KW - AUDITORY perception KW - SOUND KW - HEARING KW - NOISE N1 - Accession Number: 23321725; Brungart, Douglas S. 1; Email Address: douglas.brungart@wpafb.af.mil Chang, Peter S. 2; Email Address: Chang.549@osu.edu Simpson, Brian D. 1 DeLiang Wang 3; Affiliation: 1: Air Force Research Laboratory, Human Effectiveness Directorate, 2610 Seventh Street, Wright-Patterson AFB, Ohio 45433 2: Department of Computer Science and Engineering, Ohio State University, Columbus, Ohio 43210 3: Department of Computer Science and Engineering and Center for Cognitive Science, Ohio State University, Columbus, Ohio 43210; Source Info: Dec2006, Vol. 120 Issue 6, p4007; Subject Term: SPEECH; Subject Term: AUDITORY perception; Subject Term: SOUND; Subject Term: HEARING; Subject Term: NOISE; Number of Pages: 12p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1121/1.2363929 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23321725&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Groeber, M.A. AU - Haley, B.K. AU - Uchic, M.D. AU - Dimiduk, D.M. AU - Ghosh, S. T1 - 3D reconstruction and characterization of polycrystalline microstructures using a FIB–SEM system JO - Materials Characterization JF - Materials Characterization Y1 - 2006/12// VL - 57 IS - 4/5 M3 - Article SP - 259 EP - 273 SN - 10445803 AB - Abstract: A novel methodology is described in this paper which is a step towards three-dimensional representation of grain structures for microstructure characterization and processing microstructural data for subsequent computational analysis. It facilitates evaluation of stereological parameters of grain structures from a series of two-dimensional (2D) electron backscatter diffraction (EBSD) maps. Crystallographic orientation maps of consecutive serial sections of a micron-size specimen are collected in an automated manner using a dual-beam focused ion beam–scanning electron microscope (FIB–SEM) outfitted with an EBSD system. Analysis of the serial-sectioning data is accomplished using a special purpose software program called “Micro-Imager”. Micro-Imager is able to output characterization parameters such as the distribution of grain size, number of neighboring grains, and grain orientation and misorientation for every 2D section. Some of these data can be compared with results from stereological exercises. Stacking the 2D statistical information obtained from the analysis of the serial-sectioning data provides a means to quantify the variability of grain structure in 3D. [Copyright &y& Elsevier] AB - Copyright of Materials Characterization is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYCRYSTALLINE semiconductors KW - MICROSTRUCTURE KW - SCANNING electron microscopes KW - CRYSTAL grain boundaries KW - MICROMECHANICS KW - Characterization KW - Focused-ion-beam KW - Microstructure KW - Morphology N1 - Accession Number: 23167734; Groeber, M.A. 1 Haley, B.K. 2 Uchic, M.D. 3 Dimiduk, D.M. 3 Ghosh, S. 4; Email Address: ghosh.5@osu.edu; Affiliation: 1: Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA 2: Department of Computer Science and Engineering, The Ohio State University, Columbus, OH 43210, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMD, Wright-Patterson AFB, OH 45433-7817, USA 4: Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210, USA; Source Info: Dec2006, Vol. 57 Issue 4/5, p259; Subject Term: POLYCRYSTALLINE semiconductors; Subject Term: MICROSTRUCTURE; Subject Term: SCANNING electron microscopes; Subject Term: CRYSTAL grain boundaries; Subject Term: MICROMECHANICS; Author-Supplied Keyword: Characterization; Author-Supplied Keyword: Focused-ion-beam; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Morphology; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.matchar.2006.01.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23167734&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wells, Timothy S. AU - Wang, Linda Z. AU - Spooner, Christina N. AU - Smith, Tyler C. AU - Hiliopoulos, Katia M. AU - Kamens, Deborah R. AU - Gray, Gregory C. AU - Sato, Paul A. T1 - Self-Reported Reproductive Outcomes Among Male and Female 1991 Gulf War era US Military Veterans. JO - Maternal & Child Health Journal JF - Maternal & Child Health Journal Y1 - 2006/12// VL - 10 IS - 6 M3 - Article SP - 501 EP - 510 PB - Springer Science & Business Media B.V. SN - 10927875 AB - Background: Following the 1991 Gulf War, some veterans expressed concerns regarding their reproductive health. Our objective was to assess whether an association exists between deployment to the 1991 Gulf War and self-reported adverse pregnancy outcomes. Methods: Using a modified Dillman technique with telephone follow-up, we conducted a survey via a postal questionnaire from February 1996–August 1997 to compare selected reproductive outcomes among 10,000 US veterans deployed to the 1991 Gulf War with those of 10,000 nondeployed Gulf War era veterans. Results: A total of 8742 individuals responded to the survey, a response rate of 51 percent. Using multivariable analyses, results showed no differences in number of reported pregnancies between Gulf War veterans and nondeployed veterans. Among 2233 female and 2159 male participants, there were no differences in birth weight of infants born to Gulf War veterans compared with nondeployed Gulf War era veterans. In multivariable models, male and female Gulf War veterans did not significantly differ in risk for ectopic pregnancies, stillbirths, or miscarriages when compared with nondeployed veterans of the same era. Conclusions: These results do not suggest an association between service in the 1991 Gulf War and adverse reproductive outcomes for both male and female veterans during the 4 years after the war. [ABSTRACT FROM AUTHOR] AB - Copyright of Maternal & Child Health Journal is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERSIAN Gulf War, 1991 KW - REPRODUCTIVE health KW - RESEARCH KW - BIRTH weight KW - PREGNANCY complications KW - MEDICAL care of veterans KW - ECTOPIC pregnancy KW - MISCARRIAGE KW - ARMED Forces KW - DISEASES KW - HEALTH aspects KW - RISK factors KW - UNITED States KW - Birth weight KW - Gulf War KW - Military KW - Reproductive outcomes N1 - Accession Number: 23332742; Wells, Timothy S. 1,2; Email Address: timothy.wells@wpafb.af.mil Wang, Linda Z. 1 Spooner, Christina N. 1 Smith, Tyler C. 1 Hiliopoulos, Katia M. 3 Kamens, Deborah R. 1 Gray, Gregory C. 4 Sato, Paul A. 5; Affiliation: 1: Department of Defense Center for Deployment Health Research, Naval Health Research Center, San Diego, CA, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Bldg 824, Rm 206, 2800 Q Street, OH 45433, USA 3: PRA International, Inc., San Diego, CA, USA 4: University of Iowa, College of Public Health, Iowa City, IA, USA 5: National Institutes of Health, Bethesda, MD, USA; Source Info: Dec2006, Vol. 10 Issue 6, p501; Subject Term: PERSIAN Gulf War, 1991; Subject Term: REPRODUCTIVE health; Subject Term: RESEARCH; Subject Term: BIRTH weight; Subject Term: PREGNANCY complications; Subject Term: MEDICAL care of veterans; Subject Term: ECTOPIC pregnancy; Subject Term: MISCARRIAGE; Subject Term: ARMED Forces; Subject Term: DISEASES; Subject Term: HEALTH aspects; Subject Term: RISK factors; Subject Term: UNITED States; Author-Supplied Keyword: Birth weight; Author-Supplied Keyword: Gulf War; Author-Supplied Keyword: Military; Author-Supplied Keyword: Reproductive outcomes; NAICS/Industry Codes: 928110 National Security; NAICS/Industry Codes: 923140 Administration of Veterans' Affairs; Number of Pages: 10p; Illustrations: 6 Charts; Document Type: Article L3 - 10.1007/s10995-006-0122-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23332742&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ruden, E. L. AU - Zhang, Shouyin AU - Intrator, T. P. AU - Wurden, G. A. T1 - Experimental profile evolution of a high-density field-reversed configuration. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2006/12// VL - 13 IS - 12 M3 - Article SP - 122505 PB - American Institute of Physics SN - 1070664X AB - A field-reversed configuration (FRC) gains angular momentum over time, eventually resulting in an n=2 rotational instability (invariant under rotation by π) terminating confinement. To study this, a laser interferometer probes the time history of line integrated plasma density along eight chords of the high-density (∼1017 cm-3) field-reversed configuration experiment with a liner. Abel and tomographic inversions provide density profiles during the FRC’s azimuthally symmetric phase, and over a period when the rotational mode has saturated and rotates with a roughly fixed profile, respectively. During the latter part of the symmetric phase, the FRC approximates a magnetohydrodynamic (MHD) equilibrium, allowing the axial magnetic-field profile to be calculated from pressure balance. Basic FRC properties such as temperature and poloidal flux are then inferred. The subsequent two-dimensional n=2 density profiles provide angular momentum information needed to set bounds on prior values of the stability relevant parameter α (rotational to ion diamagnetic drift frequency ratio), in addition to a view of plasma kinematics useful for benchmarking plasma models of higher order than MHD. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOMENTUM distributions KW - ANGULAR momentum (Mechanics) KW - MOMENTUM wave function KW - DYNAMICS of a particle KW - CONFIGURATION space KW - CONFIGURATIONS (Geometry) N1 - Accession Number: 23761727; Ruden, E. L. 1 Zhang, Shouyin 2 Intrator, T. P. 2 Wurden, G. A. 2; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, 3550 Aberdeen Avenue SE, Kirtland AFB, New Mexico, 87117–5776 2: Los Alamos National Laboratory, Los Alamos, New Mexico 87545; Source Info: Dec2006, Vol. 13 Issue 12, p122505; Subject Term: MOMENTUM distributions; Subject Term: ANGULAR momentum (Mechanics); Subject Term: MOMENTUM wave function; Subject Term: DYNAMICS of a particle; Subject Term: CONFIGURATION space; Subject Term: CONFIGURATIONS (Geometry); Number of Pages: 12p; Illustrations: 1 Diagram, 11 Graphs; Document Type: Article L3 - 10.1063/1.2402130 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23761727&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Westmoreland, D. AU - Anderson, D. AU - Porta, S. T1 - Effects of maximal and submaximal exercise on plasma electrolyte shifts. JO - Trace Elements & Electrolytes JF - Trace Elements & Electrolytes Y1 - 2006///2006 4th Quarter VL - 23 IS - 4 M3 - Article SP - 312 EP - 317 SN - 09462104 AB - Background: Mineral fluctuations in the body have been extensively studied to determine effects on athletic performance, with magnesium in particular being the focus of many studies. As a general rule, high-intensity exercise induces an increase in plasma Mg, while submaximal exercise has the opposite effect. This generality is based on comparisons among studies that differed in subject pools and experimental design, however, and many exceptions to the general trend have been noted. In this study, we sought to control the effects of between-subject variability, exercise duration and time of day on the plasma Mg shift by having each subject take maximal and submaximal exercise trials at a standardized time of day within a 48-h period. Material and methods: 25 cadets of the United States Air Force Academy underwent both a submaximal cycle and a maximal-effort treadmill test in randomized order within a 48-h time period. Blood samples were drawn from each subject immediately before and after exercise and analyzed for whole blood Na, K, Mg, Ca, pH, pCO2, pO2, HCO3-, base excess and hematocrit. Results: Submaximal exercise induced a significant change in K and Mg, while maximal exercise trials caused significant changes in all four measured electrolytes. The magnitude of electrolyte shifts was significantly different between trials for Na, Ca and Mg, and were in opposite directions for Ca and Mg. In both exercise regimens, there was a significant negative correlation between pre-exercise plasma Mg levels and the Mg shift during exercise. However, the thresholds that separated positive and negative Mg shifts were substantially different between the exercise regimens. Conclusion: Short exercise regimens differing in intensity have profound, and often opposite, effects on electrolyte shifts. This study supports the generality that high-intensity exercise leads to an increase in plasma Mg, while submaximal exercise leads to a decrease. Hypomagnesic individuals transfer Mg into the plasma compartment during exercise in proportion to workload. We hypothesize that the observed Mg rise in such individuals is a compensatory mechanism that involves rapid mobilization of Mg from apatite crystals in bone. [ABSTRACT FROM AUTHOR] AB - Copyright of Trace Elements & Electrolytes is the property of Dustri-Verlag Dr. Karl Feistle GmbH & Co., KG and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNESIUM KW - MINERALS in the body KW - EXERCISE physiology KW - TREADMILL exercise KW - ELECTROLYTES KW - HEMATOCRIT KW - BLOOD plasma KW - exercise physiology KW - Mg shift KW - plasma electrolytes N1 - Accession Number: 22856493; Westmoreland, D. 1; Email Address: David.Westmoreland@usafa.af.mil Anderson, D. 2 Porta, S. 3,4; Affiliation: 1: Department of Biology, US Air Force Academy, Colorado 2: Tulane University School of Medicine, New Orleans, LA, USA 3: lnstitute of Applied Stress Research, Bad Radkersburg 4: lnstitute of Pathophysiology, Medical University of Graz, Austria; Source Info: 2006 4th Quarter, Vol. 23 Issue 4, p312; Subject Term: MAGNESIUM; Subject Term: MINERALS in the body; Subject Term: EXERCISE physiology; Subject Term: TREADMILL exercise; Subject Term: ELECTROLYTES; Subject Term: HEMATOCRIT; Subject Term: BLOOD plasma; Author-Supplied Keyword: exercise physiology; Author-Supplied Keyword: Mg shift; Author-Supplied Keyword: plasma electrolytes; NAICS/Industry Codes: 414510 Pharmaceuticals and pharmacy supplies merchant wholesalers; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22856493&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gupta, Amit AU - Gupta, Sachin AU - Pavuk, Marian AU - Roehrborn, Claus G. T1 - Anthropometric and metabolic factors and risk of benign prostatic hyperplasia: A prospective cohort study of Air Force veterans JO - Urology JF - Urology Y1 - 2006/12// VL - 68 IS - 6 M3 - Article SP - 1198 EP - 1205 SN - 00904295 AB - Abstract: Objectives: The relationship between anthropometric and metabolic factors and benign prostatic hyperplasia (BPH) is poorly understood. We investigated the associations of BPH with anthropometric and metabolic parameters in this prospective study of Vietnam War veterans. Methods: A total of 1206 participants in the comparison arm of the Air Force Health Study with a median follow-up of 15.6 years were included in this study. The “Ranch Hand” group, occupationally exposed to herbicides, was excluded to eliminate any confounding from exposure to herbicides. BPH was determined by medical record review using the International Classification of Diseases and Related Problems, Ninth Revision. We used Cox proportional hazards regression models for the statistical analysis. Results: The median age for BPH diagnosis was 58.6 years. On multivariate analyses, increasing age (relative risk [RR] 1.14, 95% confidence interval [CI] 1.12 to 1.17), height (RR 1.02, 95% CI 1.004 to 1.03), and fasting blood glucose (RR 1.004, 95% CI 1.001 to 1.007) were associated with increased risk. The effect of age varied with the duration of follow-up. A greater systolic blood pressure (RR 0.992, 95% CI 0.986 to 0.997) was associated with decreased risk of BPH. A dose-response effect was seen for age, height, and systolic blood pressure. No effect was seen for weight, body mass index, change in weight or body mass index, lipids, thyroid hormone status, or the metabolic syndrome. Conclusions: The risk of BPH increased with increasing age, height, and fasting blood glucose levels. The risk was decreased with a greater systolic blood pressure. No relationship was seen between BPH and metabolic syndrome, weight, body mass index, lipid level, or thyroid hormone status. [Copyright &y& Elsevier] AB - Copyright of Urology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BENIGN prostatic hyperplasia KW - BLOOD diseases -- Diagnosis KW - VETERANS -- United States KW - BLOOD pressure N1 - Accession Number: 23457507; Gupta, Amit 1 Gupta, Sachin 2 Pavuk, Marian 3 Roehrborn, Claus G. 1; Email Address: Claus.Roehrborn@UTSouthwestern.edu; Affiliation: 1: Department of Urology, University of Texas Southwestern Medical Center, Dallas, Texas 2: Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas 3: SpecPro Incorporated, Air Force Research Laboratory, Air Force Health Study Branch, Brooks City-Base, Texas; Source Info: Dec2006, Vol. 68 Issue 6, p1198; Subject Term: BENIGN prostatic hyperplasia; Subject Term: BLOOD diseases -- Diagnosis; Subject Term: VETERANS -- United States; Subject Term: BLOOD pressure; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.urology.2006.09.034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23457507&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wei Lu AU - Koerner, Hilmar AU - Vaia, Richard T1 - Effect of electric field on exfoliation of nanoplates. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/11/27/ VL - 89 IS - 22 M3 - Article SP - 223118 PB - American Institute of Physics SN - 00036951 AB - Nanocomposite performance relies on reproducible dispersion and arrangement of nanoparticles, such that the dominant morphology across macroscopic dimensions is nanoscopic. The impact of electric fields on the interaction of nanoplates is discussed for improving dispersion. For ideal dielectrics, an electric field may assist (or retard) exfoliation depending on the angle between a collection of plates and the field. A critical electric field strength for exfoliation is predicted. Structural refinement occurs by cleavage through the center of the stack. For lossy dielectrics, frequency can be tuned to cause exfoliation in all plate orientations. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC fields KW - NANOPARTICLES KW - DIELECTRICS KW - DISPERSION KW - ELECTRIC insulators & insulation KW - CHEMICAL peel N1 - Accession Number: 23420715; Wei Lu 1; Email Address: weilu@umich.edu Koerner, Hilmar 2 Vaia, Richard 2; Affiliation: 1: Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109 2: Air Force Research Laboratory, Materials and Manufacturing Directorarte, AFRL/MLBP, Bldg 654, 2941 Hobson Way, Wright-Patterson AFB, Ohio 45433; Source Info: 11/27/2006, Vol. 89 Issue 22, p223118; Subject Term: ELECTRIC fields; Subject Term: NANOPARTICLES; Subject Term: DIELECTRICS; Subject Term: DISPERSION; Subject Term: ELECTRIC insulators & insulation; Subject Term: CHEMICAL peel; NAICS/Industry Codes: 335930 Wiring device manufacturing; NAICS/Industry Codes: 326290 Other rubber product manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.2398913 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23420715&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cerutti, L. AU - Boissier, G. AU - Grech, P. AU - Pérona, A. AU - Angellier, J. AU - Rouillard, Y. AU - Kaspi, R. AU - Genty, F. T1 - Hole-well antimonide laser diodes on GaSb operating near 2.93 µm. JO - Electronics Letters JF - Electronics Letters Y1 - 2006/11/23/ VL - 42 IS - 24 M3 - Article SP - 1400 EP - 1401 PB - Institution of Engineering & Technology SN - 00135194 AB - The operation of electrically-pumped type-II Sb-based laser diodes in which only the holes are quantum confined is reported. These laser structures were fabricated by molecular beam epitaxy on (001) GaSb substrates. In the multi-quantum well region, radiative recombinations originate from InGaSb hole wells embedded in InGaAsSb barriers lattice-matched to GaSb. Laser operation was demonstrated from such structures up to 243 K at 2.93 µm in the pulsed regime (200 ns, 5 kHz). A minimum threshold of about 12.8 kW/cm2 combined with a T0 around 70 K have been measured. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIODES KW - QUANTUM wells KW - RADIATIVE transitions KW - QUANTUM electronics KW - LASER spectroscopy KW - WAVELENGTHS N1 - Accession Number: 23250547; Cerutti, L. 1 Boissier, G. 1 Grech, P. 1 Pérona, A. 1 Angellier, J. 1 Rouillard, Y. 1 Kaspi, R. 2 Genty, F. 1; Email Address: genty@univ-montp2.fr; Affiliation: 1: CEM2, Université of Montpellier 2, 34095 Montpellier, France 2: Air Force Research Laboratory, AFRL/DELS, Albuquerque, New Mexico, 87111, USA; Source Info: 11/23/2006, Vol. 42 Issue 24, p1400; Subject Term: DIODES; Subject Term: QUANTUM wells; Subject Term: RADIATIVE transitions; Subject Term: QUANTUM electronics; Subject Term: LASER spectroscopy; Subject Term: WAVELENGTHS; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 2p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1049/el:20062753 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23250547&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Levashov, E.A. AU - Vakaev, P.V. AU - Zamulaeva, E.I. AU - Kudryashov, A.E. AU - Pogozhev, Yu.S. AU - Shtansky, D.V. AU - Voevodin, A.A. AU - Sanz, A. T1 - Nanoparticle dispersion-strengthened coatings and electrode materials for electrospark deposition JO - Thin Solid Films JF - Thin Solid Films Y1 - 2006/11/23/ VL - 515 IS - 3 M3 - Article SP - 1161 EP - 1165 SN - 00406090 AB - Abstract: Advanced electrode compositions were developed using self-propagating high-temperature synthesis (SHS). Electrospark deposition (ESD) was applied to produce tribological coatings which were disperse-strengthened by incorporation of nanosized particles. Nanostructured electrodes of cemented carbides were produced using powder metallurgy technologies. They allow increasing the coatings density, thickness, hardness, Young''s modulus and wear resistance. Positive effects of the nanostructure of electrodes on the deposition process and structure and properties of the coatings are discussed. In that case the tungsten carbide phases become predominant in the coatings. A mechanism of the dissolution reaction of WC with Ni at the contact surface of electrode was proposed. It was shown that the formation of the coating structure starts on the electrode and is accomplished on the substrate. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COATING processes KW - ELECTRIC resistors KW - MICROMECHANICS KW - STEREOLOGY KW - Coating KW - Electrospark deposition (ESD) KW - Microstructure KW - Nanosized additives KW - WC–Co nanostructured electrodes N1 - Accession Number: 22962621; Levashov, E.A. 1; Email Address: levashov@shs.misis.ru Vakaev, P.V. 1 Zamulaeva, E.I. 1 Kudryashov, A.E. 1 Pogozhev, Yu.S. 1 Shtansky, D.V. 1 Voevodin, A.A. 2 Sanz, A. 3; Affiliation: 1: Moscow State Institute of Steel and Alloys, Technological University, Leninsky pr., 4, Moscow 119049, Russia 2: Air Force Research Laboratory, 2941 Hobson Way, Wright Patterson AFB, OH 45433, United States 3: SKF Engineering and Research Centre, P.O. Box 2350 Kelvinbaan 16, 3430 DT Nieuwegein, 3439 MT Nieuwegein, The Netherlands; Source Info: Nov2006, Vol. 515 Issue 3, p1161; Subject Term: COATING processes; Subject Term: ELECTRIC resistors; Subject Term: MICROMECHANICS; Subject Term: STEREOLOGY; Author-Supplied Keyword: Coating; Author-Supplied Keyword: Electrospark deposition (ESD); Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Nanosized additives; Author-Supplied Keyword: WC–Co nanostructured electrodes; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.tsf.2006.07.140 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22962621&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Samoc, Marek AU - Samoc, Anna AU - Grote, James G. T1 - Complex nonlinear refractive index of DNA JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2006/11/11/ VL - 431 IS - 1-3 M3 - Article SP - 132 EP - 134 SN - 00092614 AB - Abstract: Femtosecond Z-scan technique was used to determine the dispersion of the complex cubic nonlinear susceptibility (related to the nonlinear refractive index n 2 and the two-photon absorption coefficient β 2) of deoxyribonucleic acid (DNA) in the range of wavelengths from 530–1300nm. The nonlinear refractive index of DNA varies from ≈ 2×10−15 to 1×10−14 cm2/W at λ =1300–530nm, respectively. Only a weak two-photon absorption is observed below λ =600nm with a nonlinear absorption coefficient β 2 of about 0.2cm/GW at λ =530nm. The dispersion is approximated with a simple complex expression. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISPERSION KW - NUCLEIC acids KW - GENES KW - ABSORPTION N1 - Accession Number: 22943689; Samoc, Marek 1; Email Address: marek.samoc@anu.edu.au Samoc, Anna 1 Grote, James G. 2; Affiliation: 1: Laser Physics Centre, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 0200, Australia 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Nov2006, Vol. 431 Issue 1-3, p132; Subject Term: DISPERSION; Subject Term: NUCLEIC acids; Subject Term: GENES; Subject Term: ABSORPTION; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.cplett.2006.09.057 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22943689&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O.N. AU - Scott, J.M. AU - Miracle, D.B. T1 - Composition range and glass forming ability of ternary Ca–Mg–Cu bulk metallic glasses JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2006/11/09/ VL - 424 IS - 1/2 M3 - Article SP - 394 EP - 399 SN - 09258388 AB - Abstract: A number of ternary Ca–Mg–Cu amorphous alloys with compositions ranging from 40 to 70at.% for Ca, 5–30at.% for Mg and 10–36at.% for Cu were produced by a copper mold casting method as wedge-shaped samples with the thickness varying from 0.5 to 10mm. The maximum thickness at which an alloy remains fully amorphous, glass transition temperature, crystallization temperature, temperature interval of the super-cooled region, solidus and liquidus temperatures, as well as heats of crystallization and melting, are reported for these alloys. The effect of the alloy composition on glass forming ability is discussed. In the studied composition range, the Ca50Mg22.5Cu27.5 alloy has the best glass forming ability, being fully amorphous after casting to the thicknesses of at least 10mm. [Copyright &y& Elsevier] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC composites KW - CRYSTALLIZATION KW - EXPERTISE KW - PHASE transformations (Physics) KW - Bulk metallic glass KW - Ca–Mg–Cu alloys KW - Casting KW - Differential scanning calorimetry KW - Glass forming ability KW - X-ray diffraction N1 - Accession Number: 22636073; Senkov, O.N. 1; Email Address: oleg.senkov@wpafb.af.mil Scott, J.M. 1 Miracle, D.B. 2; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: Nov2006, Vol. 424 Issue 1/2, p394; Subject Term: METALLIC composites; Subject Term: CRYSTALLIZATION; Subject Term: EXPERTISE; Subject Term: PHASE transformations (Physics); Author-Supplied Keyword: Bulk metallic glass; Author-Supplied Keyword: Ca–Mg–Cu alloys; Author-Supplied Keyword: Casting; Author-Supplied Keyword: Differential scanning calorimetry; Author-Supplied Keyword: Glass forming ability; Author-Supplied Keyword: X-ray diffraction; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jallcom.2006.01.104 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22636073&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Birnkrant, Michael J. AU - McWilliams, Hilary K. AU - Li, Christopher Y. AU - Natarajan, Lalgudi V. AU - Tondiglia, Vincent P. AU - Sutherland, Richard L. AU - Lloyd, Pamela F. AU - Bunning, Timothy J. T1 - On the structure of holographic polymer-dispersed polyethylene glycol JO - Polymer JF - Polymer Y1 - 2006/11/08/ VL - 47 IS - 24 M3 - Article SP - 8147 EP - 8154 SN - 00323861 AB - Abstract: Holographic polymerization (H-P) has been used to fabricate polymer-dispersed liquid crystals and pattern inert nanoparticles. In this article, one-dimensional grating structures of Norland resin and polyethylene glycol (PEG) were achieved using the H-P technique. Both reflection and transmission grating structures were fabricated. The optical properties of the reflection grating structures (also known as Bragg reflectors, BRs) are thermosensitive, which is attributed to the formation and crystallization of PEG crystals. The thermal switching temperature of the BR can be tuned by using different molecular weight PEG samples. The hierarchical structure and morphology of the BR were studied using synchrotron X-ray, polarized light microscopy and transmission electron microscopy. PEG crystals were found to be confined in ∼60nm thick layers in the BR. Upon crystallization, the PEG lamellae were parallel to the BR surfaces and PEG chains were parallel to the BR normal, resembling the confined crystallization behavior of polyethylene oxide (PEO) in PEO-block-polystyrene (PEO-b-PS) block copolymers. This observation suggests that the tethering effect in the block copolymer systems does not play a major role in PEG chain orientation in the confined nanoenvironment. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERIZATION KW - POLYMERS KW - POLYMER liquid crystals KW - POLYETHYLENE glycol KW - COPOLYMERS KW - Holographic polymerization KW - Nanoconfinement KW - Polymer crystallization N1 - Accession Number: 22964830; Birnkrant, Michael J. 1 McWilliams, Hilary K. 1 Li, Christopher Y. 1; Email Address: chrisli@drexel.edu Natarajan, Lalgudi V. 2 Tondiglia, Vincent P. 2 Sutherland, Richard L. 2 Lloyd, Pamela F. 3 Bunning, Timothy J. 4; Email Address: timothy.bunning@wpafb.af.mil; Affiliation: 1: A. J. Drexel Nanotechnology Institute and Department of Materials Science and Engineering, Drexel University, LeBow Building, Room 443, 3141 Chestnut Street, Philadelphia, PA 19104, USA 2: Science Applications International Corporation, 4031 Colonel Glenn Highway, Dayton, OH 45431, USA 3: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Nov2006, Vol. 47 Issue 24, p8147; Subject Term: POLYMERIZATION; Subject Term: POLYMERS; Subject Term: POLYMER liquid crystals; Subject Term: POLYETHYLENE glycol; Subject Term: COPOLYMERS; Author-Supplied Keyword: Holographic polymerization; Author-Supplied Keyword: Nanoconfinement; Author-Supplied Keyword: Polymer crystallization; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.polymer.2006.09.052 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22964830&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Luckarift, Heather R. AU - Johnson, Glenn R. AU - Spain, Jim C. T1 - Silica-immobilized enzyme reactors; application to cholinesterase-inhibition studies JO - Journal of Chromatography B: Analytical Technologies in the Biomedical & Life Sciences JF - Journal of Chromatography B: Analytical Technologies in the Biomedical & Life Sciences Y1 - 2006/11/07/ VL - 843 IS - 2 M3 - Article SP - 310 EP - 316 SN - 15700232 AB - Abstract: A rapid and economical method is reported for the preparation of an immobilized enzyme reactor (IMER) using silica-encapsulated equine butyrylcholinesterase (BuChE) as a model system. Peptide-mediated silica formation was used to encapsulate BuChE, directly immobilizing the enzyme within a commercial pre-packed column. The silica/enzyme nanocomposites form and attach simultaneously to the metal affinity column via a histidine-tag on the silica-precipitating peptide. BuChE–IMER columns were integrated to a liquid chromatography system and used as a rapid and reproducible screening method for determining the potency of cholinesterase inhibitors. The IMER preparation method reported herein produces an inert silica-encapsulation matrix with advantages over alternative systems, including ease of preparation, high immobilization efficiency (70–100%) and complete retention of activity during continuous use. [Copyright &y& Elsevier] AB - Copyright of Journal of Chromatography B: Analytical Technologies in the Biomedical & Life Sciences is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHOLINESTERASES KW - CHOLINESTERASE inhibitors KW - ENZYME inhibitors KW - SILICA KW - IMMOBILIZED enzymes KW - Butyrylcholinesterase KW - Cholinesterase inhibitors KW - Immobilized enzyme reactor KW - Silica-encapsulation N1 - Accession Number: 22941376; Luckarift, Heather R. 1; Email Address: hluckarift@gtcom.net Johnson, Glenn R. 1 Spain, Jim C. 2; Affiliation: 1: Air Force Research Laboratory, Airbase Technologies Division, 139 Barnes Drive, Suite #2, Tyndall Air Force Base, FL 32403, USA 2: Georgia Institute of Technology, School of Civil and Environmental Engineering, 311 Ferst Drive, Atlanta, GA 30332, USA; Source Info: Nov2006, Vol. 843 Issue 2, p310; Subject Term: CHOLINESTERASES; Subject Term: CHOLINESTERASE inhibitors; Subject Term: ENZYME inhibitors; Subject Term: SILICA; Subject Term: IMMOBILIZED enzymes; Author-Supplied Keyword: Butyrylcholinesterase; Author-Supplied Keyword: Cholinesterase inhibitors; Author-Supplied Keyword: Immobilized enzyme reactor; Author-Supplied Keyword: Silica-encapsulation; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 212322 Industrial Sand Mining; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jchromb.2006.06.036 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22941376&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Gufeng AU - Karnes, John AU - Bunker, Christopher E. AU - Lei Geng, M. T1 - Two-dimensional correlation coefficient mapping in gas chromatography: Jet fuel classification for environmental analysis JO - Journal of Molecular Structure JF - Journal of Molecular Structure Y1 - 2006/11/06/ VL - 799 IS - 1-3 M3 - Article SP - 247 EP - 252 SN - 00222860 AB - Abstract: We demonstrate the feasibility of using two-dimensional correlation coefficient mapping to classify gas chromatograms of environmental hazards. Correct identification and classification of the contaminants is the prerequisite for their appropriate treatment and containments. A data set consisting of 76 gas chromatograms of eight types of jet fuels, which are common sources of hydrocarbon contamination in ground water, is examined with two-dimensional statistical sample–sample correlation coefficients. Analysis demonstrates that jet fuel samples of the same type correlate strongly with each other but less significantly with other jet fuel classes. According to the magnitude of the correlation coefficients between each pair of the samples, jet fuel types of each sample in the data set can be assigned with an accuracy of 100% through a leave-one-out cross validation (LOOCV) procedure. Correlation coefficient mapping is thus a promising method to classify samples of environmental importance. [Copyright &y& Elsevier] AB - Copyright of Journal of Molecular Structure is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JET planes -- Fuel KW - CHROMATOGRAPHIC analysis KW - CHROMATOGRAMS KW - FEASIBILITY studies KW - Correlation coefficient mapping KW - Environmental analysis KW - Jet fuel KW - Sample classification N1 - Accession Number: 22797792; Wang, Gufeng 1 Karnes, John 2 Bunker, Christopher E. 2; Email Address: Christopher.Bunker@wpafb.af.mil Lei Geng, M. 1; Email Address: Lei-Geng@uiowa.edu; Affiliation: 1: Department of Chemistry and The Optical Science and Technology Center, University of Iowa, Iowa City, IA 52242, USA 2: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Nov2006, Vol. 799 Issue 1-3, p247; Subject Term: JET planes -- Fuel; Subject Term: CHROMATOGRAPHIC analysis; Subject Term: CHROMATOGRAMS; Subject Term: FEASIBILITY studies; Author-Supplied Keyword: Correlation coefficient mapping; Author-Supplied Keyword: Environmental analysis; Author-Supplied Keyword: Jet fuel; Author-Supplied Keyword: Sample classification; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.molstruc.2006.04.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22797792&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barron-Jimenez, R. AU - Caton, J. A. AU - Anderson, T. N. AU - Lucht, R. P. AU - Walther, T. AU - Roy, S. AU - Brown, M. S. AU - Gord, J. R. T1 - Application of a difference-frequency-mixing based diode-laser sensor for carbon monoxide detection in the 4.4–4.8 μm spectral region. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2006/11/02/ VL - 85 IS - 2/3 M3 - Article SP - 185 EP - 197 PB - Springer Science & Business Media B.V. SN - 09462171 AB - An all-solid-state continuous-wave (cw) laser system for mid-infrared absorption measurements of the carbon monoxide (CO) molecule has been developed and demonstrated. The single-mode, tunable output of an external-cavity diode laser (ECDL) is difference-frequency mixed with the output of a 550-mW diode-pumped cw Nd:YAG laser in a periodically poled lithium niobate (PPLN) crystal to generate tunable cw radiation in the mid-infrared region. The wavelength of the 860-nm ECDL can be coarse tuned from 860.782 to 872.826 nm, allowing the sensor to be operated in the spectral region 4.4–4.8 μm. CO-concentration measurements were performed in CO/CO2/N2 mixtures in a room-temperature gas cell, in the exhaust stream of a well-stirred reactor (WSR) at Wright-Patterson Air Force Base and in a near-adiabatic hydrogen/air CO2-doped flame. The noise equivalent detection limits were estimated to be 1.1 and 2.5 ppm per meter for the gas cell and flame experiments, respectively. These limits were computed for combustion gas at 1000 K and atmospheric pressure assuming a signal-to-noise ratio of 1. The sensor uncertainty was estimated to be 2% for the gas-cell measurements and 10% for the flame measurements based on the repeatability of the peak absorption. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLID-state lasers KW - CARBON monoxide KW - ABSORPTION spectra KW - COMBUSTION gases KW - GAS cooled reactors KW - OHIO KW - WRIGHT Laboratory (Wright-Patterson Air Force Base, Ohio) N1 - Accession Number: 32776564; Barron-Jimenez, R. 1 Caton, J. A. 1 Anderson, T. N. 2 Lucht, R. P. 2; Email Address: lucht@ecn.purdue.edu Walther, T. 3 Roy, S. 4 Brown, M. S. 4 Gord, J. R. 5; Affiliation: 1: Department of Mechanical Engineering , Texas A&M University , College Station 77843-3123, USA 2: School of Mechanical Engineering , Purdue University , West Lafayette,IN 47907-2088, USA 3: Institute for Applied Physics , TU Darmstadt , Schlossgartenstr. 7 64289 Darmstadt, Germany 4: Innovative Scientific Solutions, Inc. , 2766 Indian Ripple Rd. Dayton 45440-3638, USA 5: Air Force Research Laboratory, Propulsion Directorate , Wright-Patterson Air Force Base , Dayton 45433-7251, USA; Source Info: Nov2006, Vol. 85 Issue 2/3, p185; Subject Term: SOLID-state lasers; Subject Term: CARBON monoxide; Subject Term: ABSORPTION spectra; Subject Term: COMBUSTION gases; Subject Term: GAS cooled reactors; Subject Term: OHIO; Company/Entity: WRIGHT Laboratory (Wright-Patterson Air Force Base, Ohio); Number of Pages: 13p; Illustrations: 1 Diagram, 3 Charts, 8 Graphs; Document Type: Article L3 - 10.1007/s00340-006-2281-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=32776564&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mailloux, Robert J. T1 - Operating Modes and Dynamic Range of Active Space-Fed Arrays With Digital Beamforming. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2006/11/02/Nov2006 Part 2 VL - 54 IS - 11 M3 - Article SP - 3347 EP - 3355 SN - 0018926X AB - Narrow band space-fed (lens) scanning arrays have played a major role in many military and commercial applications. However, wider bandwidth space-fed arrays with phase shifters in the objective aperture, and subarrayed time delay have not found many ready applications because of network losses, complexity, and more recently because of a perceived incompatibility with active solid state module technology. This paper demonstrates that a feed array with transmit/receive (T/R) modules and digitally reconfigured control, can accommodate both narrow band and radiation with relatively efficient use of the active sources. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BROADBAND communication systems KW - BEAM dynamics KW - ELECTRON beams KW - BANDWIDTHS KW - PARTICLE beams KW - RADIATION KW - TELECOMMUNICATION systems N1 - Accession Number: 23126017; Mailloux, Robert J. 1,2; Email Address: robert.mailloux@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA, 01731-2909 USA. 2: Department of Electrical and Computer Engineering, University of Massachusetts, Amherst, MA 01001 USA.; Source Info: Nov2006 Part 2, Vol. 54 Issue 11, p3347; Subject Term: BROADBAND communication systems; Subject Term: BEAM dynamics; Subject Term: ELECTRON beams; Subject Term: BANDWIDTHS; Subject Term: PARTICLE beams; Subject Term: RADIATION; Subject Term: TELECOMMUNICATION systems; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 517410 Satellite Telecommunications; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TAP.2006.880658 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23126017&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Michaelson, Peter G. AU - Allan, Patrick AU - Chaney, John AU - Mair, Eric A. T1 - Validations of a Portable Home Sleep Study With Twelve-Lead Polysomnography: Comparisons and Insights Into a Variable Gold Standard. (Cover story) JO - Annals of Otology, Rhinology & Laryngology JF - Annals of Otology, Rhinology & Laryngology Y1 - 2006/11// VL - 115 IS - 11 M3 - Article SP - 802 EP - 809 SN - 00034894 AB - Objectives: Accurate and timely diagnosis for patients with obstructive sleep apnea (OSA) is imperative. Unfortunately, growing interest in this diagnosis has resulted in increased requests and waiting times for polysomnography (PSG), as well as a potential delay in diagnosis and treatment. This study evaluated the accuracy and viability of utilizing SNAP (SNAP Laboratories, LLC, Wheeling, Illinois), a portable home sleep test, as an alternative to traditional PSG in diagnosing OSA. Methods: This prospective clinical trial included 59 patients evaluated at our institution's sleep laboratory. Concurrent PSG and SNAP testing was performed for 1 night on each patient. Independent, blinded readers at our institution and at an outside-accredited institution read the PSG data, and 2 independent, blinded readers interpreted the SNAP data at SNAP laboratories. The apnea-hypopnea index (AHI) was used to compare the 2 testing modalities. The correlation coefficient, receiver operating characteristic curve analysis, and the Bland-Altman curves, as well as sensitivity, specificity, inter-reader variability, positive predictive value, and negative predictive value, were used to compare SNAP and PSG. Results: There is a definitive, statistically sound correlation between the AHIs determined from both PSG and SNAP. This relationship holds true for all measures of comparison, while displaying a concerning, weaker correlation between the different PSG interpretations. Conclusions: There is a convincing correlation between the study-determined AHIs of both PSG and SNAP. This finding supports SNAP as a suitable alternative to PSG in identifying OSA, while accentuating the inherent variation present in a PSG-derived AHl. This test expands the diagnostic and therapeutic prowess of the practicing otolaryngologist by offering an alternative OSA testing modality that is associated with not only less expense, decreased waiting time, and increased convenience, but also statistically proven accuracy. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of Otology, Rhinology & Laryngology is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SLEEP disorders KW - SLEEP apnea syndromes KW - POLYSOMNOGRAPHY KW - APNEA KW - CLINICAL trials KW - RESEARCH KW - obstructive sleep apnea KW - polysomnography KW - SNAP N1 - Accession Number: 23185790; Michaelson, Peter G. 1 Allan, Patrick 2 Chaney, John 2 Mair, Eric A. 1; Affiliation: 1: Departments of Otolaryngology-Head and Neck Surgery, San Antonio, Texas 2: Pulmonary Medicine, Wilford Hall United States Air Force Medical Center, San Antonio, Texas; Source Info: Nov2006, Vol. 115 Issue 11, p802; Subject Term: SLEEP disorders; Subject Term: SLEEP apnea syndromes; Subject Term: POLYSOMNOGRAPHY; Subject Term: APNEA; Subject Term: CLINICAL trials; Subject Term: RESEARCH; Author-Supplied Keyword: obstructive sleep apnea; Author-Supplied Keyword: polysomnography; Author-Supplied Keyword: SNAP; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23185790&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barron-Jimenez, R. AU - Caton, J. A. AU - Anderson, T. N. AU - Lucht, R. P. AU - Walther, T. AU - Roy, S. AU - Brown, M. S. AU - Gord, J. R. T1 - Application of a difference-frequency-mixing based diode-laser sensor for carbon monoxide detection in the 4.4–4.8 μm spectral region. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2006/11// VL - 11 IS - 2/3 M3 - Article SP - 185 EP - 197 PB - Springer Science & Business Media B.V. SN - 09462171 AB - An all-solid-state continuous-wave (cw) laser system for mid-infrared absorption measurements of the carbon monoxide (CO) molecule has been developed and demonstrated. The single-mode, tunable output of an external-cavity diode laser (ECDL) is difference-frequency mixed with the output of a 550-mW diode-pumped cw Nd:YAG laser in a periodically poled lithium niobate (PPLN) crystal to generate tunable cw radiation in the mid-infrared region. The wavelength of the 860-nm ECDL can be coarse tuned from 860.782 to 872.826 nm, allowing the sensor to be operated in the spectral region 4.4–4.8 μm. CO-concentration measurements were performed in CO/CO2/N2 mixtures in a room-temperature gas cell, in the exhaust stream of a well-stirred reactor (WSR) at Wright-Patterson Air Force Base and in a near-adiabatic hydrogen/air CO2-doped flame. The noise equivalent detection limits were estimated to be 1.1 and 2.5 ppm per meter for the gas cell and flame experiments, respectively. These limits were computed for combustion gas at 1000 K and atmospheric pressure assuming a signal-to-noise ratio of 1. The sensor uncertainty was estimated to be 2% for the gas-cell measurements and 10% for the flame measurements based on the repeatability of the peak absorption. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON monoxide KW - CONTINUOUS wave radar KW - LITHIUM niobate KW - COMBUSTION gases KW - ABSORPTION KW - LASERS -- Industrial applications N1 - Accession Number: 22437782; Barron-Jimenez, R. 1 Caton, J. A. 1 Anderson, T. N. 2 Lucht, R. P. 2; Email Address: lucht@ecn.purdue.edu Walther, T. 3 Roy, S. 4 Brown, M. S. 4 Gord, J. R. 5; Affiliation: 1: Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3123, USA 2: School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-2088, USA 3: Institute for Applied Physics, TU Darmstadt, Schlossgartenstr. 7, 64289 Darmstadt, Germany 4: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Rd., Dayton, OH 45440-3638, USA 5: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433-7251, USA; Source Info: Nov2006, Vol. 11 Issue 2/3, p185; Subject Term: CARBON monoxide; Subject Term: CONTINUOUS wave radar; Subject Term: LITHIUM niobate; Subject Term: COMBUSTION gases; Subject Term: ABSORPTION; Subject Term: LASERS -- Industrial applications; Number of Pages: 13p; Illustrations: 1 Diagram, 3 Charts, 8 Graphs; Document Type: Article L3 - 10.1007/s00340-006-2281-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22437782&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lievens, Christopher W AU - Gunvant, Pinakin AU - Newman, James AU - Gerstner, Michael AU - Simpson, Chad T1 - Effect of Proview self-tonometry on pharmaceutical compliance. JO - Clinical & Experimental Optometry JF - Clinical & Experimental Optometry Y1 - 2006/11// VL - 89 IS - 6 M3 - Article SP - 381 EP - 385 SN - 08164622 AB - Aim: To evaluate changes in patient compliance with medical treatment while using the Proview Eye Pressure Monitor. Methods: A crossover study design was used to compare the compliance of patients with established use of topical medication to lower intraocular pressure in the treatment of primary open-angle glaucoma. Thirty-two patients currently managed with latanoprost 0.005%, brimonidine 0.15%, travoprost 0.004% or bimatoprost 0.03% as monotherapy or in combination were randomly assigned to two study groups. Group 1 was instructed in the use of Proview Eye Pressure Monitor three times daily for 30 days as an adjunct to the glaucoma regimen. Group 2 was observed with no change in the patients’ treatment regimen during this phase of study. A crossover occurred at 30 days. Compliance was monitored by assigning new bottles of topical medication during each phase of study. Bottles were weighed with a Mettler balance (Mettler Toledo Co.) at the initiation and completion of each phase. The changes in bottle-weight determined the amount of medication consumed by each patient for each phase of the study. The weights were analysed to estimate changes in compliance. Results: A paired samples Student t-test compared the consumed bottle weights with and without Proview Eye Pressure Monitor usage. No statistical significance or trend was identifiable (p = 0.98). Use of the Proview Eye Pressure Monitor did not significantly change compliance with adjunct eye drop medication. Conclusion: The use of the Proview Eye Pressure Monitor use did not improve but appeared to hinder compliance with glaucoma treatment in this study. [ABSTRACT FROM AUTHOR] AB - Copyright of Clinical & Experimental Optometry is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTRAOCULAR pressure KW - GLAUCOMA KW - TONOMETRY KW - EYE -- Diseases KW - COMPLIANCE KW - PHOSPHENES KW - glaucoma KW - intraocular pressure KW - pharmaceutical compliance KW - Proview Phosphene Tonometer KW - tonometry N1 - Accession Number: 22505522; Lievens, Christopher W 1; Email Address: clievens@sco.edu Gunvant, Pinakin 2 Newman, James 2 Gerstner, Michael 2 Simpson, Chad 2; Affiliation: 1: Southern College of Optometry, Memphis, Tennessee, USA 2: United States Air Force, USA; Source Info: Nov2006, Vol. 89 Issue 6, p381; Subject Term: INTRAOCULAR pressure; Subject Term: GLAUCOMA; Subject Term: TONOMETRY; Subject Term: EYE -- Diseases; Subject Term: COMPLIANCE; Subject Term: PHOSPHENES; Author-Supplied Keyword: glaucoma; Author-Supplied Keyword: intraocular pressure; Author-Supplied Keyword: pharmaceutical compliance; Author-Supplied Keyword: Proview Phosphene Tonometer; Author-Supplied Keyword: tonometry; Number of Pages: 5p; Illustrations: 1 Color Photograph, 1 Chart; Document Type: Article L3 - 10.1111/j.1444-0938.2006.00081.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22505522&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sihn, Sangwook AU - Iarve, Endel V. AU - Roy, Ajit K. T1 - Asymptotic analysis of laminated composites with countersunk open- and fastened-holes JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2006/11// VL - 66 IS - 14 M3 - Article SP - 2479 EP - 2490 SN - 02663538 AB - Abstract: A linear stress analysis reveals singular stress fields at lamina (ply) interfaces in open- and fastened-hole problems, analogous to free-edge stress fields. An asymptotic analysis was performed in the vicinity of orthotropic ply interfaces at open- and fastened-hole edges to assess the power of singularity at critical locations. Three locations were examined through the thickness of the hole; vertical section (shank), countersunk section and intersection of the shank and the countersunk edge. The power of singularity was calculated around the hole edge at three countersunk angles (0°, 30° and 50°) and at three ply interfaces ([45/−45], [0/45] and [45/0]). In the open-hole case, the power of singularity at the vertical edge was weaker than 0.1 in all interface configurations and locations, and that at the 75° countersunk edge reached a maximum of 0.2876 at the [45/−45] interface as the countersunk angle increased. No singular root was found at intersection of the shank and any angles of the countersunk edges. In the fastened-hole edge case, the observed trends were largely opposite to the open-hole case. In the shank of the hole, the power of singularity reached 0.3010 at the [45/−45] interface, which was the strongest singularity found for all countersunk angles explored. The intersection of the shank and 50° countersunk edges exhibited the highest degrees of singularity of 0.7591 at the [45/−45] interface. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONFIGURATIONS (Geometry) KW - INTERFACE circuits KW - THERMOELASTIC stress analysis KW - ASYMPTOTES KW - Asymptotic analysis KW - C. Anisotropy KW - C. Stress concentrations KW - Open- and fastened-holes N1 - Accession Number: 21830204; Sihn, Sangwook 1; Email Address: sangwook@stanfordalumni.org Iarve, Endel V. 1 Roy, Ajit K. 2; Affiliation: 1: University of Dayton Research Institute, Nonmetallic Division, 300 College Park, Dayton, OH 45469-0168, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLBC, 2941 P St Rm. 136, WPAFB, OH 45433-7750, USA; Source Info: Nov2006, Vol. 66 Issue 14, p2479; Subject Term: CONFIGURATIONS (Geometry); Subject Term: INTERFACE circuits; Subject Term: THERMOELASTIC stress analysis; Subject Term: ASYMPTOTES; Author-Supplied Keyword: Asymptotic analysis; Author-Supplied Keyword: C. Anisotropy; Author-Supplied Keyword: C. Stress concentrations; Author-Supplied Keyword: Open- and fastened-holes; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.compscitech.2006.02.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21830204&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sierakowski, R.L. AU - Hughes, M.L. T1 - Force protection using composite sandwich structures JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2006/11// VL - 66 IS - 14 M3 - Article SP - 2500 EP - 2505 SN - 02663538 AB - Abstract: In the recent past, advances have been made in the attempt to utilize composite materials as components in protective structures such as those employed by the Air Force to secure critical military assets. In such applications, where lightweight materials that exhibit large levels of energy absorption and high strength/stiffness characteristics are desirable, composite sandwich constructions offer an attractive solution. In an attempt to evaluate the suitability of certain sandwich structures for use in force protection applications, several sandwich constructions with somewhat novel core materials were identified. A group of thermoplastic core materials have been developed that possess features of both a dense elastic solid and a foam type material. This class of core materials incorporates sloping cell walls, rather than the traditional parallel cell wall structure present in, say, a regular aluminum honeycomb. This feature, along with the increased surface area connectivity present between cells (produced by the forming process used to create the core materials) integrates surrounding cells into what may be described as an enhanced hexagonal single unit cell structure. To develop a preliminary understanding of the response of these enhanced cellular materials to the various loading regimes that could be encountered in a protective structure, a series of static and dynamic tests were conducted at Tyndall Air Force Base. A complete description of the novel core materials, as well as the results of the static and dynamic tests, will be presented in this paper. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPOSITE materials KW - MILITARY capital KW - AIR forces KW - CONTINUUM mechanics KW - A. Structural materials KW - B. Mechanical properties KW - B. Strength KW - C. Sandwich KW - Cellular structure N1 - Accession Number: 21830206; Sierakowski, R.L. 1 Hughes, M.L. 2; Email Address: hughema@eng.auburn.edu; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, AFRL/MN CA-N, 101 W. Eglin Boulevard, Ste. 135, Eglin AFB, FL 32542-6810, United States 2: Auburn University, Department of Civil Engineering, 238 Harbert Engineering Center, Auburn, AL 36849-5337, United States; Source Info: Nov2006, Vol. 66 Issue 14, p2500; Subject Term: COMPOSITE materials; Subject Term: MILITARY capital; Subject Term: AIR forces; Subject Term: CONTINUUM mechanics; Author-Supplied Keyword: A. Structural materials; Author-Supplied Keyword: B. Mechanical properties; Author-Supplied Keyword: B. Strength; Author-Supplied Keyword: C. Sandwich; Author-Supplied Keyword: Cellular structure; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.compscitech.2006.03.034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21830206&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gupta, Amit AU - Ketchum, Norma AU - Roehrborn, Claus G. AU - Schecter, Arnold AU - Aragaki, Corinne C. AU - Michalek, Joel E. T1 - Serum Dioxin, Testosterone, and Subsequent Risk of Benign Prostatic Hyperplasia: A Prospective Cohort Study of Air Force Veterans. JO - Environmental Health Perspectives JF - Environmental Health Perspectives Y1 - 2006/11// VL - 114 IS - 11 M3 - Article SP - 1649 EP - 1654 PB - Superintendent of Documents SN - 00916765 AB - BACKGROUND: Operation Ranch Hand veterans were involved in spraying herbicides, including Agent Orange, during the Vietnam War in 1962–1971; Agent Orange was contaminated with 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). It has been hypothesized that dioxins may be partially responsible for an increase of male reproductive tract disorders such as testicular cancer, cryptorchidism, and hypospadias. OBJECTIVES: In this study, our objective was to assess the effect of serum TCDD concentration on the risk of development of benign prostatic hyperplasia (BPH) and on serum testosterone levels. METHODS: This study was a longitudinal, prospective cohort study made up of U.S. Air Force veterans involved in Operation Ranch Hand. Other Air Force veterans who did not spray herbicides were included as comparisons. BPH was determined by medical record review and by medical examinations conducted during the study. Data were available for 971 Ranch Hand and 1,266 comparison veterans. We investigated the relationship between BPH and serum TCDD level using the Cox proportional hazards models adjusted for testosterone levels, body mass index (BMI), and the percentage change in BMI per year. RESULTS: In univariate and multivariate analyses, the risk of BPH decreased with increasing serum TCDD in the comparison group. The multivariate risk ratio for BPH in the comparison group was 0.84 (95% confidence interval, 0.73–0.98). Excluding men with prostate cancer, inflammatory or other prostatic diseases did not substantially alter the association. Serum testosterone levels were inversely associated with serum TCDD levels in both Ranch Hand and comparison groups. CONCLUSIONS: TCDD exposure at general population levels is associated with a decreasing risk of BPH with higher exposure levels. TCDD exposure is also negatively associated with serum testosterone levels. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Health Perspectives is the property of Superintendent of Documents and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SERUM KW - BLOOD plasma KW - BENIGN prostatic hyperplasia KW - PROSTATE -- Aging KW - DIOXINS KW - TETRACHLORODIBENZODIOXIN KW - TESTOSTERONE KW - ANDROGENS KW - VETERANS -- United States KW - benign prostatic hyperplasia KW - BPH KW - dioxins KW - endocrine disruptors KW - persistent organic pollutants KW - Ranch Hand KW - TCDD KW - testosterone KW - Vietnam veterans N1 - Accession Number: 23151874; Gupta, Amit 1,2; Email Address: amit.gupta@utsouthwestern.edu Ketchum, Norma 3 Roehrborn, Claus G. 1 Schecter, Arnold 2 Aragaki, Corinne C. 2 Michalek, Joel E. 4; Affiliation: 1: Department of Urology, University of Texas Southwestern Medical Center, Dallas, Dallas, Texas, USA 2: University of Texas School of Public Health, Regional Campus, Dallas, Dallas, Texas, USA 3: Air Force Research Laboratory, Brooks City-Base, Texas, USA 4: Center for Epidemiology and Biostatistics, University of Texas Health Science Center, San Antonio, San Antonio, Texas, USA; Source Info: Nov2006, Vol. 114 Issue 11, p1649; Subject Term: SERUM; Subject Term: BLOOD plasma; Subject Term: BENIGN prostatic hyperplasia; Subject Term: PROSTATE -- Aging; Subject Term: DIOXINS; Subject Term: TETRACHLORODIBENZODIOXIN; Subject Term: TESTOSTERONE; Subject Term: ANDROGENS; Subject Term: VETERANS -- United States; Author-Supplied Keyword: benign prostatic hyperplasia; Author-Supplied Keyword: BPH; Author-Supplied Keyword: dioxins; Author-Supplied Keyword: endocrine disruptors; Author-Supplied Keyword: persistent organic pollutants; Author-Supplied Keyword: Ranch Hand; Author-Supplied Keyword: TCDD; Author-Supplied Keyword: testosterone; Author-Supplied Keyword: Vietnam veterans; NAICS/Industry Codes: 414510 Pharmaceuticals and pharmacy supplies merchant wholesalers; NAICS/Industry Codes: 325414 Biological Product (except Diagnostic) Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1289/ehp.8957 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23151874&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hong, L. AU - Cui, N. AU - Bakich, M. AU - Layne, J. R. T1 - Multirate interacting multiple model particle filter for terrain-based ground target tracking. JO - IEE Proceedings -- Control Theory & Applications JF - IEE Proceedings -- Control Theory & Applications Y1 - 2006/11// VL - 153 IS - 6 M3 - Article SP - 721 EP - 731 PB - Institution of Engineering & Technology SN - 13502379 AB - Ground target tracking is a nonlinear filtering problem when it incorporates terrain and road constraints into system modelling and uses polar coordinate sensing. Furthermore, when tracking ground manoeuvring targets with an interacting multiple model approach, a non-Gaussian problem exists because of an inherent mixing operation. A multirate interacting multiple model particle filter (MRIMM-PF) is presented to effectively solve the problem of nonlinear and non-Gaussian tracking, with an emphasis on computational savings. The sample subset of each mode is updated at a different rate and mode switches are performed according to a Markov chain at a low rate. For a fixed number of samples, simulation results show that the MRIMM-PF significantly reduces computational costs, with comparable tracking performance to multiple model particle filter. [ABSTRACT FROM AUTHOR] AB - Copyright of IEE Proceedings -- Control Theory & Applications is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAUSSIAN processes KW - MARKOV processes KW - SIMULATION methods & models KW - MATHEMATICAL models KW - NUMERICAL analysis KW - SYSTEMS theory N1 - Accession Number: 22114431; Hong, L. 1; Email Address: lhong@cs.wright.edu Cui, N. 1 Bakich, M. 2 Layne, J. R. 2; Affiliation: 1: Department of Electrical Engineering, Wright State University, Dayton, OH 45435, USA 2: Air Force Research Laboratory, SNAT, Sensors Directorate, WPAFB, OH 45433, USA; Source Info: Nov2006, Vol. 153 Issue 6, p721; Subject Term: GAUSSIAN processes; Subject Term: MARKOV processes; Subject Term: SIMULATION methods & models; Subject Term: MATHEMATICAL models; Subject Term: NUMERICAL analysis; Subject Term: SYSTEMS theory; Number of Pages: 11p; Illustrations: 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1049/ip-cta:20050047 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22114431&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gans, Michael J. T1 - Channel Capacity Between Antenna Arrays — Part II: Amplifier Noise Dominates. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2006/11// VL - 54 IS - 11 M3 - Article SP - 1983 EP - 1992 SN - 00906778 AB - In this paper (Part II of two), we continue examining the use of space-time coding techniques to achieve very-high spectral efficiencies in highly scattering environments, using multiple transmit and receive antennas. The goal is to increase as much as possible the number of antenna elements, which is particularly difficult at the remote station, which usually has a more limited space allotted to the antenna array than at the base station. Under the assumption that sky noise was the dominant noise source, Part I addressed the channel-capacity effects of mutual impedance between antenna elements in the remote array, and the correlation between the signal and noise fields received by these elements. In Part II, we consider the same effects under the assumption that amplifier noise is the dominant noise source. The question of how closely the receiving array elements can be spaced depends on how precisely the channel can be estimated. This is related to the high-precision requirement experienced with supergain antenna arrays. The supergain connection is made explicit by showing that the optimum channel capacity for the case of a single transmitting element is achieved by using the supergain weights for the receiving array. To indicate the effect of noisy channel estimation, the loss in receiver antenna gain due to noise in weight estimates is computed with a simple simulation model of scattered propagation for the single-transmitting-antenna element case. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNAS (Electronics) KW - TRANSMITTING antennas KW - DECODERS (Electronics) KW - ANTENNA arrays KW - NOISE generators (Electronics) KW - AERODYNAMIC noise KW - ELECTRONIC amplifiers KW - MIMO systems KW - BROADBAND communication systems KW - RAYLEIGH scattering KW - Amplifiers KW - antenna arrays KW - channel capacity KW - multiple-input multiple-output (MIMO) KW - mutual coupling KW - noise correlation N1 - Accession Number: 23249277; Gans, Michael J. 1; Email Address: gansm@rl.af.mil; Affiliation: 1: Air Force Research Laboratory, Information Directorate, Rome, NY 13441 USA; Source Info: Nov2006, Vol. 54 Issue 11, p1983; Subject Term: ANTENNAS (Electronics); Subject Term: TRANSMITTING antennas; Subject Term: DECODERS (Electronics); Subject Term: ANTENNA arrays; Subject Term: NOISE generators (Electronics); Subject Term: AERODYNAMIC noise; Subject Term: ELECTRONIC amplifiers; Subject Term: MIMO systems; Subject Term: BROADBAND communication systems; Subject Term: RAYLEIGH scattering; Author-Supplied Keyword: Amplifiers; Author-Supplied Keyword: antenna arrays; Author-Supplied Keyword: channel capacity; Author-Supplied Keyword: multiple-input multiple-output (MIMO); Author-Supplied Keyword: mutual coupling; Author-Supplied Keyword: noise correlation; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; Number of Pages: 10p; Illustrations: 1 Black and White Photograph, 2 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1109/TCOMM.2006.881366 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23249277&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morrissey, Ryan AU - Nicholas, Theodore T1 - Staircase testing of a titanium alloy in the gigacycle regime JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2006/11// VL - 28 IS - 11 M3 - Article SP - 1577 EP - 1582 SN - 01421123 AB - Abstract: The objective of this research was to investigate the high cycle fatigue behavior of a titanium alloy using an ultrasonic fatigue system. Fatigue testing from 106 to 109 cycles under fully reversed cycling (R =−1) was performed to determine the ultra-high cycle fatigue behavior of Ti–6Al–4V. The staircase test method was employed to obtain accurate values of the mean fatigue limit stress corresponding to fixed numbers of cycles up to 109. These results were compared to similar data generated on conventional servohydraulic test systems and electromagnetic shaker systems to determine if there are any frequency effects. In addition, specimens were tested with and without cooling air to determine the effects of temperature on the fatigue behavior. Results indicate that the fatigue strength determined from ultrasonic testing was consistent with conventional testing. In addition, the temperature rise in this material during ultrasonic testing is insignificant and has no apparent effect on the endurance limit. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - FATIGUE KW - MENTAL fatigue KW - TESTING -- Equipment & supplies KW - Endurance limit KW - High cycle fatigue KW - Staircase testing KW - Ti–6Al–4V KW - Ultrasonic N1 - Accession Number: 21740632; Morrissey, Ryan 1; Email Address: Ryan.Morrissey@wpafb.af.mil Nicholas, Theodore 2; Affiliation: 1: Air Force Research Laboratory, AFRL/MLLMN, Wright-Patterson AFB, USA 2: Air Force Institute of Technology, AFIT/ENY, Wright-Patterson AFB, USA; Source Info: Nov2006, Vol. 28 Issue 11, p1577; Subject Term: TITANIUM alloys; Subject Term: FATIGUE; Subject Term: MENTAL fatigue; Subject Term: TESTING -- Equipment & supplies; Author-Supplied Keyword: Endurance limit; Author-Supplied Keyword: High cycle fatigue; Author-Supplied Keyword: Staircase testing; Author-Supplied Keyword: Ti–6Al–4V; Author-Supplied Keyword: Ultrasonic; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.ijfatigue.2005.10.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21740632&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Selvam, R. Panneer AU - Lin, Lancho AU - Ponnappan, Rengasamy T1 - Direct simulation of spray cooling: Effect of vapor bubble growth and liquid droplet impact on heat transfer JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2006/11// VL - 49 IS - 23/24 M3 - Article SP - 4265 EP - 4278 SN - 00179310 AB - Abstract: Numerical modeling of multiphase flow using level set method is discussed. The 2-D model considers the effect of surface tension between liquid and vapor, gravity, phase change and viscosity. The level set method is used to capture the movement of the free surface. The detail of incorporating the mechanism of phase change in the incompressible Navier–Stokes equations using the level set method is described. The governing equations are solved using the finite difference method. The computer model is used to study the spray cooling phenomenon in the micro environment of about 40μm thick liquid layer with vapor bubble growing due to nucleation. The importance of studying the heat transfer mechanism in thin liquid film for spray cooling is identified. The flow and heat transfer details are presented for two cases: (1) when the vapor bubble grows due to nucleation and (2) merges with the vapor layer above the liquid layer and when a liquid droplet impacts the thin liquid layer with vapor bubble growing. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COOLING KW - HEAT transfer KW - VISCOSITY KW - EQUATIONS KW - Heat transfer enhancement KW - Level set method KW - Multiphase flow modeling KW - Spray cooling N1 - Accession Number: 21920979; Selvam, R. Panneer 1; Email Address: rps@uark.edu Lin, Lancho 2 Ponnappan, Rengasamy 3; Affiliation: 1: BELL 4190, University of Arkansas, Fayetteville, AR 72701, USA 2: Universal Energy systems Inc., 4401 Dayton-Xenia Road, OH 45432-1894, USA 3: Air Force Research Laboratory, Propuslion Directorate, Wright-Patterson AFB, OH 45433-7251, USA; Source Info: Nov2006, Vol. 49 Issue 23/24, p4265; Subject Term: COOLING; Subject Term: HEAT transfer; Subject Term: VISCOSITY; Subject Term: EQUATIONS; Author-Supplied Keyword: Heat transfer enhancement; Author-Supplied Keyword: Level set method; Author-Supplied Keyword: Multiphase flow modeling; Author-Supplied Keyword: Spray cooling; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2006.05.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21920979&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiao, C.Q. AU - DeJoseph, C.A. AU - Lee, R. AU - Garscadden, A. T1 - Kinetics of electron impact ionization and ion-molecule reactions of pyridine JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2006/11// VL - 257 IS - 1-3 M3 - Article SP - 34 EP - 40 SN - 13873806 AB - Abstract: Dissociative ionization of pyridine by electron impact is investigated using Fourier transform mass spectrometry (FTMS). Absolute total and partial ionization cross-sections are measured as functions of electron energy in the range of 10–200eV. The parent ion and 15 fragment ions are observed, with the total cross-section reaching a maximum of 1.5×10−15 cm2 at ∼90eV. Four important ions generated at 50eV electron energy, C5H5N+, C4H4+, C4H3+, and C4H2+, are found to react with pyridine via mechanisms of charge transfer and proton transfer. C4H4+ also undergoes condensation with pyridine followed by H elimination. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONIZATION (Atomic physics) KW - PYRIDINE KW - MASS spectrometry KW - ION exchange (Chemistry) KW - Cross-section KW - Ion-molecule KW - Ionization KW - Pyridine N1 - Accession Number: 22719439; Jiao, C.Q. 1 DeJoseph, C.A. 2 Lee, R. 2 Garscadden, A. 2; Email Address: alan.garscadden@wpafb.af.mil; Affiliation: 1: Innovative Scientific Solutions Inc., Dayton, OH 45440-3638, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7251, USA; Source Info: Nov2006, Vol. 257 Issue 1-3, p34; Subject Term: IONIZATION (Atomic physics); Subject Term: PYRIDINE; Subject Term: MASS spectrometry; Subject Term: ION exchange (Chemistry); Author-Supplied Keyword: Cross-section; Author-Supplied Keyword: Ion-molecule; Author-Supplied Keyword: Ionization; Author-Supplied Keyword: Pyridine; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijms.2006.06.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22719439&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alexeenko, Alina A. AU - Gimelshein, Sergey F. AU - Muntz, E. Phillip AU - Ketsdever, Andrew D. T1 - Kinetic modeling of temperature driven flows in short microchannels JO - International Journal of Thermal Sciences JF - International Journal of Thermal Sciences Y1 - 2006/11// VL - 45 IS - 11 M3 - Article SP - 1045 EP - 1051 SN - 12900729 AB - Abstract: The temperature driven gas flows in both a two-dimensional finite length microchannel and a cylindrical tube have been studied numerically, with a goal of investigating performance optimization for a nanomembrane-based Knudsen Compressor. The numerical solutions were obtained using the direct simulation Monte Carlo (DSMC) method and a discrete ordinate method for the ellipsoidal statistical and Bhatnagar–Gross–Krook models. The Knudsen number was 0.2 and the length-to-height ratio 5. Three different wall temperature distributions were considered: linear, step-wise, and a non-monotonic profile typical for a radiantly heated Knudsen Compressor''s membrane. The short channel end effects are characterized, and the sensitivity of the mass flow to a non-monotonic temperature distribution is shown. [Copyright &y& Elsevier] AB - Copyright of International Journal of Thermal Sciences is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - AIR flow KW - GAS flow KW - COLD (Temperature) KW - 82.20.Wt KW - BGK KW - DSMC KW - Kinetic models KW - Microchannels KW - Thermal transpiration N1 - Accession Number: 22221752; Alexeenko, Alina A. 1; Email Address: alexeenk@usc.edu Gimelshein, Sergey F. 1 Muntz, E. Phillip 1 Ketsdever, Andrew D. 2; Affiliation: 1: Department of Aerospace and Mechanical Engineering, University of Southern California, Los Angeles, CA 90089, USA 2: Propulsion Directorate, Air Force Research Laboratory, Edwards Air Force Base, CA 93524, USA; Source Info: Nov2006, Vol. 45 Issue 11, p1045; Subject Term: AERODYNAMICS; Subject Term: AIR flow; Subject Term: GAS flow; Subject Term: COLD (Temperature); Author-Supplied Keyword: 82.20.Wt; Author-Supplied Keyword: BGK; Author-Supplied Keyword: DSMC; Author-Supplied Keyword: Kinetic models; Author-Supplied Keyword: Microchannels; Author-Supplied Keyword: Thermal transpiration; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijthermalsci.2006.01.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22221752&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kolonay, Raymond M. AU - Eastep, Franklin E. T1 - Optimal Scheduling of Control Surfaces on Flexible Wings to Reduce Induced Drag. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2006/11//Nov/Dec2006 VL - 43 IS - 6 M3 - Article SP - 1655 EP - 1655 SN - 00218669 AB - Induced drag on flexible wings is reduced at off-design cruise conditions with simulated active conformal control surface deflections. An inverse optimization technique is used to manipulate the spanwise distribution of load. The method is demonstrated on two cases, a simple rectangular wing with a beam model and a fighter wing with a fully built-up finite element structural model. The control surfaces are deflected to redistribute the lift on the wing while maintaining a two degrees of freedom (lift and pitch) flexible trimmed flight condition. Iteratively optimizing an approximate problem eliminates the need for the trimmed angle of attack and the elevator deflections to participate in the design optimization as free variables. Only the control surface deflections are used to match the desired elliptic load distribution, which in turn is shown to produce the minimum induced drag according to calculations by a Trefftz-plane technique. The automated structural optimization system program is used for creating a complex structural model, a realistic linear aerodynamic prediction technique, and a free flying trim analysis. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - FIGHTER planes KW - FINITE element method KW - AERODYNAMICS KW - DRAG (Aerodynamics) KW - WINGS N1 - Accession Number: 23632224; Kolonay, Raymond M. 1,2; Email Address: Raymond.kolonay@wpafb.af.mil Eastep, Franklin E. 3,4; Email Address: franklin.eastep@wpafb.af.mil; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Associate Fellow AIAA 3: University of Dayton, Dayton, Ohio 45469 4: Fellow AIAA; Source Info: Nov/Dec2006, Vol. 43 Issue 6, p1655; Subject Term: AIRPLANE wings; Subject Term: FIGHTER planes; Subject Term: FINITE element method; Subject Term: AERODYNAMICS; Subject Term: DRAG (Aerodynamics); Subject Term: WINGS; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 1p; Document Type: Article L3 - 10.2514/1.14604 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23632224&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Robinson, Daniel H. AU - Katayama, Andrew D. AU - Beth, Alicia AU - Odom, Susan AU - Ya-Ping Hsieh AU - Vanderveen, Arthur T1 - Increasing Text Comprehension and Graphic Note Taking Using a Partial Graphic Organizer. JO - Journal of Educational Research JF - Journal of Educational Research Y1 - 2006/11//Nov/Dec2006 VL - 100 IS - 2 M3 - Article SP - 103 EP - 111 PB - Taylor & Francis Ltd SN - 00220671 AB - In 3 quasi-experiments using intact classrooms and 1 true experiment using random assignment, students completed partially complete graphic organizers (GOs) or studied complete GOs that covered course content. The partial task led to increased overall examination performance in all experiments. Also, the authors measured students' note-taking style (linear vs. graphic) at the beginning and end of the course. In all experiments, GO note taking increased. The increases were greatest when the authors presented the partial task in a computer environment with a timed, forced-choice task. Implications for using the partial GO task in the classroom, as well as future note-taking research directions are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Educational Research is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - READING comprehension KW - NOTETAKING KW - GRAPHIC organizers KW - STUDENTS KW - CLASSROOMS KW - graphic organizers KW - note taking KW - text comprehension N1 - Accession Number: 23542929; Robinson, Daniel H. 1; Email Address: dan.robinson@mail.utexas.edu Katayama, Andrew D. 2 Beth, Alicia 1 Odom, Susan 1 Ya-Ping Hsieh 3 Vanderveen, Arthur 4; Affiliation: 1: University of Texas 2: United States Air Force Academy 3: The State University of New York 4: College Board; Source Info: Nov/Dec2006, Vol. 100 Issue 2, p103; Subject Term: READING comprehension; Subject Term: NOTETAKING; Subject Term: GRAPHIC organizers; Subject Term: STUDENTS; Subject Term: CLASSROOMS; Author-Supplied Keyword: graphic organizers; Author-Supplied Keyword: note taking; Author-Supplied Keyword: text comprehension; Number of Pages: 9p; Illustrations: 3 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23542929&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mudaliar, S. T1 - On the Application of the Radiative Transfer Approach to Scattering from a Random Medium Layer with Rough Boundaries. JO - Journal of Electromagnetic Waves & Applications JF - Journal of Electromagnetic Waves & Applications Y1 - 2006/11// VL - 20 IS - 13 M3 - Article SP - 1739 EP - 1749 PB - Taylor & Francis Ltd SN - 09205071 AB - For studying the problem of scattering from a random medium layer with rough boundaries the radiative transfer (RT) approach is widely used. In order to better understand this procedure we compared it with the statistical wave approach. Two such wave approaches are presented in this paper: the surface scattering operator (SSO) approach, and the unified approach. In both wave approaches two conditions are essential for arriving at RT system: the ladder approximation to the intensity operator, and the quasi-stationary approximation of fields. With these approximations one arrives at the integro-differential equations of the RT system. However, to arrive at the RT boundary conditions, one has to impose further approximations. In the SSO approach weak surface correlation must be imposed. In the unified approach, one has to ignore the terms involving volumetric spectral densities, and consider only single scattering from the rough boundary when deriving the boundary conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Electromagnetic Waves & Applications is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATIVE transfer KW - SCATTERING (Physics) KW - SPECTRAL energy distribution KW - QUASIANALYTIC functions KW - INTEGRO-differential equations N1 - Accession Number: 23561623; Mudaliar, S. 1; Affiliation: 1: Air Force Research Laboratory/SNHE, Hanscom AFB, MA 01731, USA; Source Info: 2006, Vol. 20 Issue 13, p1739; Subject Term: RADIATIVE transfer; Subject Term: SCATTERING (Physics); Subject Term: SPECTRAL energy distribution; Subject Term: QUASIANALYTIC functions; Subject Term: INTEGRO-differential equations; Number of Pages: 11p; Illustrations: 1 Diagram; Document Type: Article L3 - 10.1163/156939306779292246 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23561623&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roberts, T. M. T1 - Measured Electromagnetic Pulses Verify Asymptotics and Analysis for Linear, Dispersive Media. JO - Journal of Electromagnetic Waves & Applications JF - Journal of Electromagnetic Waves & Applications Y1 - 2006/11// VL - 20 IS - 13 M3 - Article SP - 1845 EP - 1851 PB - Taylor & Francis Ltd SN - 09205071 AB - Electromagnetic precursors and other pulses in dispersive media have been studied theoretically since 1914. Yet a recent National Research Council study [1, pp. 73–75] found few measurements that verify the relevant theories. Verification is useful because, where independent theories and measurements agree, the results are highly reliable. This report describes two laboratory verifications of transient-electromagnetic theory that I completed recently. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Electromagnetic Waves & Applications is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC pulses KW - LABORATORY techniques KW - ELECTROMAGNETIC theory KW - ELECTROMAGNETIC measurements KW - TRANSIENTS (Electricity) KW - NATIONAL Research Council (U.S.) N1 - Accession Number: 23561613; Roberts, T. M. 1; Affiliation: 1: Air Force Research Laboratory/SNHA 80 Scott Drive, Hanscom AFB, MA 01731, USA; Source Info: 2006, Vol. 20 Issue 13, p1845; Subject Term: ELECTROMAGNETIC pulses; Subject Term: LABORATORY techniques; Subject Term: ELECTROMAGNETIC theory; Subject Term: ELECTROMAGNETIC measurements; Subject Term: TRANSIENTS (Electricity); Company/Entity: NATIONAL Research Council (U.S.); Number of Pages: 7p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1163/156939306779292200 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23561613&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ulrich, Marybeth P. AU - Cook, Martin L. T1 - US Civil Military Relations since 9/11: Issues in Ethics and Policy DevelopmentThe views expressed in this article are those of the authors and do not necessarily reflect the official policy or position of the US Army, the US Air Force, the Department of Defense, or the US Government. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2006/11// VL - 5 IS - 3 M3 - Article SP - 161 EP - 182 PB - Routledge SN - 15027570 AB - A perennial ethical issue for senior US military officers lies in the tension between their responsibility to cultivate and offer professional military advice, on the one hand, and their Constitutional subordination to civilian leaders who may or may not heed military advice. In some periods (e.g., the end of the Clinton Administration), the military's dissatisfaction with their civilian masters is great. In those moments, concerns are raised that the military may subvert the will of civilian leaders (probably in subtle ways). At other historical moments (some would argue the current war in Iraq is one such moment), the concern is the opposite: that the military's subordination to civilian leaders may lead them to acquiesce in policies that their professional military judgment causes them to think unwise or misguided. This paper articulates some constant standards to guide that debate. The authors argue that it is important to remind military leaders that their loyalties and subordination under the US Constitution is not only to the President, Secretary of Defense, and other members of the Executive Branch of government. In addition, the Constitution clearly requires and expects that senior military leaders will give unvarnished and honest professional opinions to the Congress—even if that irritates the Administration. But further difficulties remain because the Administration itself appoints senior military leaders. This paper attempts to distinguish the in principle question of the ethical requirement that senior leaders give honest and direct professional advice from the real-world reality that officers may require moral courage and a willingness to experience displeasure and even dismissal from their positions if they do so. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Military Ethics is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY officers KW - ETHICS KW - RESPONSIBILITY KW - SUBORDINATIONISM KW - CIVIL supremacy over the military KW - CIVIL-military relations KW - ethical requirements KW - military advice KW - Senior military leader KW - the Constitution N1 - Accession Number: 22295470; Ulrich, Marybeth P. 1; Email Address: Ulrich@us.army.mil Cook, Martin L. 2; Affiliation: 1: Department of National Security and Strategy, US Army War College, Carlisle Barracks, PA, USA 2: United States Air Force Academy HQ, USAFA/DFPY, CO, USA; Source Info: Nov2006, Vol. 5 Issue 3, p161; Subject Term: MILITARY officers; Subject Term: ETHICS; Subject Term: RESPONSIBILITY; Subject Term: SUBORDINATIONISM; Subject Term: CIVIL supremacy over the military; Subject Term: CIVIL-military relations; Author-Supplied Keyword: ethical requirements; Author-Supplied Keyword: military advice; Author-Supplied Keyword: Senior military leader; Author-Supplied Keyword: the Constitution; Number of Pages: 22p; Document Type: Article L3 - 10.1080/15027570600913320 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22295470&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boakye, E. E. AU - Mogilevsky, P. AU - Parthasarathy, T. A. AU - Hay, R. S. AU - Welter, J. AU - Kerans, R. J. T1 - Monazite Coatings on SiC Fibers I: Fiber Strength and Thermal Stability. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2006/11// VL - 89 IS - 11 M3 - Article SP - 3475 EP - 3480 PB - Wiley-Blackwell SN - 00027820 AB - Commercially available SiC fibers were coated with monazite (LaPO4) using a continuous vertical coater at 1100°C. Coated fibers were heat treated in dry air, argon, and laboratory air at 1200°C for 1–20 h. The tensile strengths of uncoated and coated fibers were measured and evaluated before and after heat treatment. Fiber coating did not degrade SiC fiber strength, but heat treatment afterwards caused significant degradation that correlated with silica scale thickness. Possible strength degradation mechanisms for the coated fibers are discussed. Coating morphology, microstructure, and SiC oxidation were observed with scanning electron microscopy and transmission electron microscopy. Monazite reacted with SiC to form lanthanum silicate (La2Si2O7) in argon, but was stable with SiC in air. Despite the large coefficient of thermal expansion difference between monazite and SiC, micron thick monazite coatings did not debond from most types of SiC fibers. Possible explanations for the thermomechanical stability of the monazite fiber coatings are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON carbide KW - RESEARCH KW - STRENGTH of materials KW - CERAMIC fibers KW - MONAZITE KW - COATING processes KW - THERMAL expansion KW - STABILITY (Mechanics) N1 - Accession Number: 22776419; Boakye, E. E. 1 Mogilevsky, P. 1 Parthasarathy, T. A. 1 Hay, R. S. 2; Email Address: randall.hay@wpafb.af.mil Welter, J. 2 Kerans, R. J. 2; Affiliation: 1: UES Inc., Dayton, Ohio 45432 2: Air Force Research Laboratory, Wright-Patterson AFB, Dayton, Ohio 45433; Source Info: Nov2006, Vol. 89 Issue 11, p3475; Subject Term: SILICON carbide; Subject Term: RESEARCH; Subject Term: STRENGTH of materials; Subject Term: CERAMIC fibers; Subject Term: MONAZITE; Subject Term: COATING processes; Subject Term: THERMAL expansion; Subject Term: STABILITY (Mechanics); NAICS/Industry Codes: 327999 All Other Miscellaneous Nonmetallic Mineral Product Manufacturing; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 6p; Illustrations: 4 Black and White Photographs, 2 Charts, 1 Graph; Document Type: Article L3 - 10.1111/j.1551-2916.2006.01288.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22776419&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mogilevsky, P. AU - Boakye, E. E. AU - Hay, R. S. AU - Welter, J. AU - Kerans, R. J. T1 - Monazite Coatings on SiC Fibers II: Oxidation Protection. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2006/11// VL - 89 IS - 11 M3 - Article SP - 3481 EP - 3490 PB - Wiley-Blackwell SN - 00027820 AB - The effect of monazite on the oxidation of SiC was studied in laboratory and dry air. Monazite inhibited the oxidation of Tyranno-SA™, Tyranno-ZX™, Sylramic, and Hi-Nicalon SiC fibers. Oxidation of pure chemical vapor deposition SiC and undoped SiC single crystals was not inhibited by monazite. Dry oxidation of both uncoated and monazite-coated Tyranno-SA™ fibers initially displayed parabolic kinetics with an activation energy of 180–190 kJ/mol. Subsequently, the oxidation rate of monazite-coated fibers increased and the oxide-scale growth rate approached that of the uncoated fibers. No differences in the composition or structure of the silica oxidation product could be detected between uncoated and coated fibers using transmission electron microscopy and energy-dispersive spectroscopy. Possible mechanisms of the inhibition of SiC oxidation by monazite are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONAZITE KW - SURFACE coatings KW - SILICON carbide KW - FIBERS KW - OXIDATION KW - INHIBITION N1 - Accession Number: 22776450; Mogilevsky, P. 1; Email Address: pavel.mogilevsky@wpafb.af.mil Boakye, E. E. 1 Hay, R. S. 2 Welter, J. 2 Kerans, R. J. 2; Affiliation: 1: UES Inc., Dayton, Ohio 2: Air Force Research Laboratory, Wright-Patterson AFB, Dayton, Ohio 45433; Source Info: Nov2006, Vol. 89 Issue 11, p3481; Subject Term: MONAZITE; Subject Term: SURFACE coatings; Subject Term: SILICON carbide; Subject Term: FIBERS; Subject Term: OXIDATION; Subject Term: INHIBITION; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 10p; Illustrations: 3 Black and White Photographs, 1 Diagram, 4 Charts, 4 Graphs; Document Type: Article L3 - 10.1111/j.1551-2916.2006.01241.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22776450&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jasperse, John R. AU - Basu, Bamandas AU - Lund, Eric J. AU - Bouhram, Mehdi T1 - Gyrotropic guiding-center fluid theory for the turbulent heating of magnetospheric ions in downward Birkeland current regions. II. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2006/11// VL - 13 IS - 11 M3 - Article SP - 112902 PB - American Institute of Physics SN - 1070664X AB - A new fluid theory in the guiding-center and gyrotropic approximation derivable from the ensemble-averaged Vlasov-Maxwell equations that included the effect of wave-particle interactions for weakly turbulent, weakly inhomogeneous, nonuniformly magnetized plasma was recently given by Jasperse, Basu, Lund, and Bouhram [Phys. Plasmas 13, 072903 (2006)]. In that theory, the particles are transported in one spatial dimension (the distance s along the magnetic field) but the turbulence is two-dimensional. In this paper, which is intended as a sequel, the above theory is used for quasisteady conditions to find: (1) a new formula for the perpendicular ion-heating rate per unit volume Wi⊥(s), where Wi⊥(s) decreases for large s by what we call the “finite ion gyroradius effect”; and (2) a new formula for the perpendicular ion temperature at low altitudes, Ti⊥(s). Parametrized calculations for Ti⊥(s) are also given. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVE-particle duality KW - MAXWELL equations KW - MAGNETIC fields KW - PLASMA (Ionized gases) KW - IONIZED gases N1 - Accession Number: 23321672; Jasperse, John R. 1 Basu, Bamandas 1 Lund, Eric J. 2 Bouhram, Mehdi 3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts, 01731 2: Space Science Center, University of New Hampshire, Durham, New Hampshire, 03824 3: CETP-CNRS, 4 Avenue de Neptune, 94107 Saint-Maur Cedex, France; Source Info: Nov2006, Vol. 13 Issue 11, p112902; Subject Term: WAVE-particle duality; Subject Term: MAXWELL equations; Subject Term: MAGNETIC fields; Subject Term: PLASMA (Ionized gases); Subject Term: IONIZED gases; Number of Pages: 13p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.2364475 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23321672&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Demidov, V. I. AU - DeJoseph Jr., C. A. T1 - Analytical Penning ionization electron spectra and self-trapping of fast electrons. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2006/11// VL - 77 IS - 11 M3 - Article SP - 116104 PB - American Institute of Physics SN - 00346748 AB - It is pointed out that self-trapping of fast electrons can distort measurements of gas species in Penning ionization electron spectra. This effect should be taken into account for the development of gas chromatography detectors based on this methodology. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONIZATION (Atomic physics) KW - ELECTRONS KW - GAS chromatography KW - ELECTRON spectroscopy KW - COAL gas KW - AFTERGLOW (Physics) KW - HELIUM N1 - Accession Number: 23420640; Demidov, V. I. 1 DeJoseph Jr., C. A. 2; Affiliation: 1: Department of Physics, West Virginia University, Morgantown, West Virginia 26506 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433; Source Info: Nov2006, Vol. 77 Issue 11, p116104; Subject Term: IONIZATION (Atomic physics); Subject Term: ELECTRONS; Subject Term: GAS chromatography; Subject Term: ELECTRON spectroscopy; Subject Term: COAL gas; Subject Term: AFTERGLOW (Physics); Subject Term: HELIUM; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 2p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.2370500 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23420640&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - McGuire, Thomas T1 - The Flow of War and Time Measured in the River-Run of Dale Ritterbusch's Lyric Poetry. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2006/11// VL - 18 IS - 1/2 M3 - Poetry Review SP - 96 EP - 103 PB - US Air Force Academy English Department SN - 10466967 AB - The article offers poetry criticism of the lyric poetry of Dale Ritterbusch. It focuses on the poet's literary style and the use of themes regarding the impact of the aftermath of the Vietnam War on its veterans in the published collection "Far From the Temple of Heaven." Poems discussed include "World Series, 1968, Southeast Asia," "Green Tea," and "Canoeing Down the Quetico, 20 Years After." KW - POETRY (Literary form) -- History & criticism KW - VIETNAM War, 1961-1975, in literature KW - LYRIC poetry KW - HISTORY & criticism KW - RITTERBUSCH, Dale KW - FAR From the Temple of Heaven (Book) KW - WORLD Series, 1968, Southeast Asia (Poem) KW - GREEN Tea (Poem) KW - CANOEING Down the Quetico, 20 Years After (Poem) N1 - Accession Number: 24391046; McGuire, Thomas 1; Affiliation: 1: English and Fine Arts Department, United States Air Force Academy, Colorado Springs, Colorado; Source Info: 2006, Vol. 18 Issue 1/2, p96; Subject Term: POETRY (Literary form) -- History & criticism; Subject Term: VIETNAM War, 1961-1975, in literature; Subject Term: LYRIC poetry; Subject Term: HISTORY & criticism; Reviews & Products: FAR From the Temple of Heaven (Book); Reviews & Products: WORLD Series, 1968, Southeast Asia (Poem); Reviews & Products: GREEN Tea (Poem); Reviews & Products: CANOEING Down the Quetico, 20 Years After (Poem); People: RITTERBUSCH, Dale; Number of Pages: 8p; Document Type: Poetry Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24391046&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Newmiller, William T1 - Articles of War. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2006/11// VL - 18 IS - 1/2 M3 - Book Review SP - 335 EP - 337 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents a review of the book "Articles of War," by Nick Arvin. KW - WORLD War, 1939-1945 KW - FICTION KW - ARVIN, Nick KW - ARTICLES of War (Book) N1 - Accession Number: 24391078; Newmiller, William 1; Affiliation: 1: United States Air Force Academy; Source Info: 2006, Vol. 18 Issue 1/2, p335; Subject Term: WORLD War, 1939-1945; Subject Term: FICTION; Reviews & Products: ARTICLES of War (Book); People: ARVIN, Nick; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24391078&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Enstey, Eric T1 - Where Soldiers Fear to Tread: A Relief Worker's Tale of Survival. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2006/11// VL - 18 IS - 1/2 M3 - Book Review SP - 338 EP - 339 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents a review of the book "Where Soldiers Fear to Tread: A Relief Workers' Tale of Survival," by John S. Burnett. KW - AUTOBIOGRAPHY KW - NONFICTION KW - BURNETT, John S. KW - WHERE Soldiers Fear to Tread: A Relief Worker's Tale of Survival (Book) N1 - Accession Number: 24391079; Enstey, Eric 1; Affiliation: 1: United States Air Force Academy; Source Info: 2006, Vol. 18 Issue 1/2, p338; Subject Term: AUTOBIOGRAPHY; Subject Term: NONFICTION; Reviews & Products: WHERE Soldiers Fear to Tread: A Relief Worker's Tale of Survival (Book); People: BURNETT, John S.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24391079&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Bill T1 - most succinctly bred. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2006/11// VL - 18 IS - 1/2 M3 - Book Review SP - 356 EP - 358 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents a review of the book "most succinctly bred," by Alex Vernon. KW - AUTOBIOGRAPHY KW - NONFICTION KW - VERNON, Alex KW - MOST Succinctly Bred (Book) N1 - Accession Number: 24391085; Roy, Bill 1; Affiliation: 1: United States Air Force Academy; Source Info: 2006, Vol. 18 Issue 1/2, p356; Subject Term: AUTOBIOGRAPHY; Subject Term: NONFICTION; Reviews & Products: MOST Succinctly Bred (Book); People: VERNON, Alex; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24391085&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heckman, Emily M. AU - Grote, James G. AU - Hopkins, F. Kenneth AU - Yaney, Perry P. T1 - Performance of an electro-optic waveguide modulator fabricated using a deoxyribonucleic-acid-based biopolymer. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/10/30/ VL - 89 IS - 18 M3 - Article SP - 181116 PB - American Institute of Physics SN - 00036951 AB - An electro-optic (EO) planar waveguide modulator using a deoxyribonucleic acid (DNA)-based biopolymer for both the waveguide core and cladding layers has been fabricated and its performance evaluated. A cross-linked DNA-surfactant biopolymer was used for the top and bottom cladding layers and the core layer was a cross-linked DNA-surfactant biopolymer with 3 wt % Disperse Red 1. The EO coefficient r33 was induced through contact poling. The fabricated device was found to exhibit EO modulating behavior. Using an estimated value of r33=0.5 pm/V, a sine-squared fit to the modulating data was obtained with Vπ=263 V±10%. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHT modulators KW - WAVEGUIDES KW - ELECTROOPTICS KW - DNA KW - BIOPOLYMERS KW - SURFACE active agents N1 - Accession Number: 23073643; Heckman, Emily M. 1; Email Address: emily.heckman@wpafb.af.mil Grote, James G. 1 Hopkins, F. Kenneth 1 Yaney, Perry P. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433 2: Electro-Optics Program and Department of Physics, University of Dayton, Dayton, Ohio 45469; Source Info: 10/30/2006, Vol. 89 Issue 18, p181116; Subject Term: LIGHT modulators; Subject Term: WAVEGUIDES; Subject Term: ELECTROOPTICS; Subject Term: DNA; Subject Term: BIOPOLYMERS; Subject Term: SURFACE active agents; NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; Number of Pages: 3p; Illustrations: 1 Color Photograph, 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.2378400 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23073643&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Walker, Dennis E. AU - Fitch, Robert C. AU - Gillespie, James K. AU - Jessen, Gregg H. AU - Cassity, Paul D. AU - Breedlove, Joseph R. AU - Brillson, Leonard J. T1 - Controlled gate surface processing of AlGaN/GaN high electron mobility transistors. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/10/30/ VL - 89 IS - 18 M3 - Article SP - 183523 PB - American Institute of Physics SN - 00036951 AB - The authors have used ultrahigh vacuum surface science techniques combined with gate mask fabrication and processing to demonstrate improvements in the unity gain cutoff frequency response fT of AlGaN/GaN high electron mobility transistors compared to standard processing. In situ annealing, nitrogen ion sputtering and annealing, and Ga reflux plus annealing all displayed increased fT response on average. In situ depth-resolved cathodoluminescence spectroscopy of the AlGaN/GaN interface region reveals changes in GaN near-band edge, 2.2 eV, and 2.9 eV native defect emissions consistent with the average device performance between process steps and between devices with the same treatment on the same wafer. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSISTORS KW - ALUMINUM compounds KW - GALLIUM nitride KW - SEMICONDUCTOR wafers KW - ANNEALING of crystals KW - SPUTTERING (Physics) N1 - Accession Number: 23073583; Walker, Dennis E. 1; Email Address: walker.591@osu.edu Fitch, Robert C. 2 Gillespie, James K. 2 Jessen, Gregg H. 2 Cassity, Paul D. 2 Breedlove, Joseph R. 2 Brillson, Leonard J. 3,4,5; Affiliation: 1: Department of Electrical and Computer Engineering, The Ohio State University, 205 Dreese Laboratory, 2015 Neil Ave., Columbus, Ohio 43210-1272 2: Air Force Research Laboratory, Sensors Directorate, 2241 Avionics Circle, Wright-Patterson AFB, Ohio 45433 3: Department of Electrical and Computer Engineering, The Ohio State University, 205 Dreese Laboratory, Columbus, Ohio 43210-1272 4: Department of Physics, The Ohio State University, 205 Dreese Laboratory, Columbus, Ohio 43210-1272 5: Center for Materials Research, The Ohio State University, 205 Dreese Laboratory, Columbus, Ohio 43210-1272; Source Info: 10/30/2006, Vol. 89 Issue 18, p183523; Subject Term: TRANSISTORS; Subject Term: ALUMINUM compounds; Subject Term: GALLIUM nitride; Subject Term: SEMICONDUCTOR wafers; Subject Term: ANNEALING of crystals; Subject Term: SPUTTERING (Physics); NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 3p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.2378559 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23073583&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sandhu, S.S. AU - Fellner, J.P. T1 - Performance/design formulation for a solid polymer based acid electrolyte hydrogen/air fuel cell JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2006/10/27/ VL - 161 IS - 2 M3 - Article SP - 1133 EP - 1153 SN - 03787753 AB - Abstract: Mathematical development of preliminary performance/design equations for a hydrogen/air, solid polymer acid electrolyte based fuel cell is presented. The development is based on the principles of transport phenomena, intrinsic electrochemical kinetics, and classical thermodynamics. The developed formulation is intended to quantitatively describe the mass fraction profiles of the chemical species, hydrogen and oxygen, in the cell anode and cathode diffusion and electrocatalytic reaction layers as a function of the distance in the proton transport direction at an axial distance parallel to the cell anode or cathode channel flow. Given the cell geometry, chemical species and charge transport, and intrinsic electrochemical kinetic parameters, the developed formulation can be employed to compute the species local mass fluxes and predict the cell anode and cathode cell overvoltages for a desired geometric current density. The presented single cell performance predictive formulation has also been linked to the formulation needed to predict the performance of a stack of a number of identical PEMFCs connected in series. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUEL cells KW - ELECTROLYTES KW - POLYMERS KW - ELECTRIC batteries KW - Acid KW - Air KW - Fuel cells KW - Hydrogen KW - Performance model KW - Solid polymer N1 - Accession Number: 22717764; Sandhu, S.S. 1; Email Address: Sarwan.Sandhu@notes.udayton.edu Fellner, J.P. 2; Affiliation: 1: Department of Chemical and Materials Engineering, University of Dayton, 300 College Park, Dayton, OH 45469-0246, United States 2: Air Force Research Laboratory, Propulsion Directorate, Plans and Analysis Branch, 1950 Fifth Street, Wright-Patterson AFB, OH 45433-7251, United States; Source Info: Oct2006, Vol. 161 Issue 2, p1133; Subject Term: FUEL cells; Subject Term: ELECTROLYTES; Subject Term: POLYMERS; Subject Term: ELECTRIC batteries; Author-Supplied Keyword: Acid; Author-Supplied Keyword: Air; Author-Supplied Keyword: Fuel cells; Author-Supplied Keyword: Hydrogen; Author-Supplied Keyword: Performance model; Author-Supplied Keyword: Solid polymer; NAICS/Industry Codes: 418990 All other merchant wholesalers; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 335910 Battery manufacturing; Number of Pages: 21p; Document Type: Article L3 - 10.1016/j.jpowsour.2006.06.094 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22717764&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baizert, P. AU - Hale, T. B. AU - Temple, M. A. AU - Wicks, M. C. T1 - Forward-looking radar GMTI benefits using a linear frequency diverse array. JO - Electronics Letters JF - Electronics Letters Y1 - 2006/10/26/ VL - 42 IS - 22 M3 - Article SP - 1311 EP - 1312 PB - Institution of Engineering & Technology SN - 00135194 AB - The ability to suppress range ambiguous clutter is difficult for forward-looking arrays in GHTI processing. Use of linear frequency diverse array (FDA) is proposed, whereby each array channel operates at a different frequency and produces a range dependent pattern. The FDA significantly increases output signal-to-interference plus noise ratio (SINR) at the range ambiguous clutter Doppler, suggesting detection improvement. Output SINR is shown to increase by as much as 40 dB when compared to a constant frequency array. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC systems KW - ELECTRONIC apparatus & appliances KW - RADAR KW - FREQUENCIES of oscillating systems KW - ELECTRONICS KW - CATHODE ray oscillographs N1 - Accession Number: 22919891; Baizert, P. 1 Hale, T. B. 1 Temple, M. A. 1; Email Address: Michael.Temple@afit.edu Wicks, M. C. 2; Affiliation: 1: Air Force Institute of Technology, Department of Electrical Engineering (AFIT/ENG), USA 2: Air Force Research Laboratory, Sensors Directorate, Radar Signal Processing Branch (AFRL/SNRT), Rome, USA; Source Info: 10/26/2006, Vol. 42 Issue 22, p1311; Subject Term: ELECTRONIC systems; Subject Term: ELECTRONIC apparatus & appliances; Subject Term: RADAR; Subject Term: FREQUENCIES of oscillating systems; Subject Term: ELECTRONICS; Subject Term: CATHODE ray oscillographs; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 2p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1049/el:20062791 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22919891&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reddy, N.S. AU - Lee, C.S. AU - Kim, J.H. AU - Semiatin, S.L. T1 - Determination of the beta-approach curve and beta-transus temperature for titanium alloys using sensitivity analysis of a trained neural network JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2006/10/25/ VL - 434 IS - 1/2 M3 - Article SP - 218 EP - 226 SN - 09215093 AB - Abstract: A feed-forward neural-network (FFNN) technique with a back-propagation-learning algorithm was used to estimate the beta-approach curve and beta-transus temperature for alpha/beta titanium alloys. The input parameters were the alloy composition (Al, V, Fe, O, and N) and heat-treatment temperature, and the output parameter was the beta-phase volume percentage. The model was trained using selected data from the literature as well as new measurements. The trained model was used to predict the beta-phase volume percentage for the remaining data and to perform a sensitivity analysis to estimate the beta-transus temperature for other titanium alloys. The sensitivity analysis showed that a trained neural network can be used for extrapolated predictions (outside the range of measurements) unlike previous neural-network techniques used primarily for interpolation or approximation. Comparisons between model predictions and experimental data indicated that the NN model thus holds promise for estimating the beta-transus temperature of titanium alloys. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - METALLIC composites KW - COMPOSITE materials KW - TITANIUM KW - α/β titanium alloys KW - Beta-transus temperature KW - Neural networks KW - Sensitivity analysis N1 - Accession Number: 22220590; Reddy, N.S. 1 Lee, C.S. 1; Email Address: cslee@postech.ac.kr Kim, J.H. 2 Semiatin, S.L. 3; Affiliation: 1: Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea 2: Department of Materials Processing, Korea Institute of Machinery and Materials, Changwon 641-010, Republic of Korea 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Oct2006, Vol. 434 Issue 1/2, p218; Subject Term: TITANIUM alloys; Subject Term: METALLIC composites; Subject Term: COMPOSITE materials; Subject Term: TITANIUM; Author-Supplied Keyword: α/β titanium alloys; Author-Supplied Keyword: Beta-transus temperature; Author-Supplied Keyword: Neural networks; Author-Supplied Keyword: Sensitivity analysis; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.msea.2006.06.104 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22220590&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aggerstam, T. AU - Lourdudoss, S. AU - Radamson, H.H. AU - Sjödin, M. AU - Lorenzini, P. AU - Look, D.C. T1 - Investigation of the interface properties of MOVPE grown AlGaN/GaN high electron mobility transistor (HEMT) structures on sapphire JO - Thin Solid Films JF - Thin Solid Films Y1 - 2006/10/25/ VL - 515 IS - 2 M3 - Article SP - 705 EP - 707 SN - 00406090 AB - Abstract: We have developed a virtual GaN substrate on sapphire based on a two-step growth method. By optimizing the growth scheme for the virtual substrate we have improved crystal quality and reduced interface roughness. Our Al0.22Ga0.78N/GaN HEMT structure grown on the optimized semi-insulating GaN virtual substrate, exhibits Hall mobilities as high as 1720 and 7350 cm2/Vs and sheet carrier concentrations of 8.4×1012 and 10.0×1012 cm−2 at 300 K and 20 K, respectively. The presence of good AlGaN/GaN interface quality and surface morphology is also substantiated by X-Ray reflectivity and Atomic Force Microscopy measurements. A simplified transport model is used to fit the experimental Hall mobility. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALLINE interfaces KW - CRYSTAL growth KW - SURFACE chemistry KW - SCATTERING (Physics) KW - 61.72.Ff KW - 73.61.Ey KW - Dislocations KW - HEMT KW - Interface roughness KW - MOVPE KW - Scattering KW - X-Ray reflectivity N1 - Accession Number: 22606567; Aggerstam, T. 1; Email Address: aggis@imit.kth.se Lourdudoss, S. 1 Radamson, H.H. 1 Sjödin, M. 1 Lorenzini, P. 2 Look, D.C. 3; Affiliation: 1: Royal Institute of Technology (KTH), Electrum 229, S-164 40 Kista, Sweden 2: CNRS-CHREA, rue Bernard Gregory, 06560 Valbonne, France 3: Semiconductor Research Center, Wright State University, Dayton, Ohio 45435; and Air Force Research Laboratory, MLPS, Wright-Patterson AFB, Ohio, 45433, United States; Source Info: Oct2006, Vol. 515 Issue 2, p705; Subject Term: CRYSTALLINE interfaces; Subject Term: CRYSTAL growth; Subject Term: SURFACE chemistry; Subject Term: SCATTERING (Physics); Author-Supplied Keyword: 61.72.Ff; Author-Supplied Keyword: 73.61.Ey; Author-Supplied Keyword: Dislocations; Author-Supplied Keyword: HEMT; Author-Supplied Keyword: Interface roughness; Author-Supplied Keyword: MOVPE; Author-Supplied Keyword: Scattering; Author-Supplied Keyword: X-Ray reflectivity; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.tsf.2006.04.052 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22606567&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - KIEL, JOHNATHAN L. AU - ALARCON, RODOLFO M. AU - PARKER, JILL E. AU - VIVEKANANDA, JEEVA AU - GONZALEZ, YVETTE B. AU - STRIBLING, LUCILLE J. V. AU - ANDREWS, CARRIE J. T1 - Emerging Tick-Borne Disease in African Vipers Caused by a Cowdria-Like Organism. JO - Annals of the New York Academy of Sciences JF - Annals of the New York Academy of Sciences Y1 - 2006/10/21/ VL - 1081 IS - 1 M3 - Article SP - 434 EP - 442 SN - 00778923 AB - Heartwater is a tick-borne infectious disease caused by the rickettsial organism Cowdria ruminantium, currently Ehrlichia ruminantium. It poses an imminent threat to the Western Hemisphere, where it could cause mortality in cattle and other ruminant livestock in excess of 70%. It has been reported in the Caribbean; and its vector, Amblyomma sparsum, has been found on imported African spurred tortoises ( Geochelone sulcata) and leopard tortoises ( Geochelone pardalis) in southern Florida in the United States, leading to an importation ban on these reptiles. Symptoms have not been previously reported in reptiles. Here, we report peracute and acute deaths in African vipers imported from Africa through Florida. Signs included vomiting mucoid fluid, diarrhea, emaciation, convulsions, and death. Postmortem showed few gross lesions. The most consistent peracute and acute lesions were the pulmonary lesions and pericarditis with considerable bloody fluid in the pericardial sac (hydropericardium). These lesions strongly resembled the lesions of heartwater and a coccobacillus of less than 1-micron diameter was isolated in viper cell culture. The outbreak was brought to a halt by tick control and treatment of all exposed snakes with tetracycline. This isolation, tetracycline sensitivity, clinical signs, preliminary results with polymerase chain reaction of pCS20 ORF, and the viper preference of the disease may indicate a Cowdria-related attenuated species that has adapted to infect reptiles or an emerging new form of this group of microbes. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of the New York Academy of Sciences is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TICK-borne diseases in animals KW - SNAKES KW - HEARTWATER KW - EHRLICHIA KW - RICKETTSIACEAE KW - ANIMAL diseases KW - Cowdria KW - Ehrlichia KW - heartwater KW - viper N1 - Accession Number: 24029068; KIEL, JOHNATHAN L. 1; Email Address: Johnathan.Kiel@brooks.af.mil ALARCON, RODOLFO M. 1 PARKER, JILL E. 1 VIVEKANANDA, JEEVA 1 GONZALEZ, YVETTE B. 2 STRIBLING, LUCILLE J. V. 1 ANDREWS, CARRIE J. 1; Affiliation: 1: Air Force Research Laboratory, Brooks City-Base, Texas 78235-5107, USA 2: Northrop Grumman, Inc., San Antonio, Texas 78228, USA; Source Info: 2006, Vol. 1081 Issue 1, p434; Subject Term: TICK-borne diseases in animals; Subject Term: SNAKES; Subject Term: HEARTWATER; Subject Term: EHRLICHIA; Subject Term: RICKETTSIACEAE; Subject Term: ANIMAL diseases; Author-Supplied Keyword: Cowdria; Author-Supplied Keyword: Ehrlichia; Author-Supplied Keyword: heartwater; Author-Supplied Keyword: viper; Number of Pages: 9p; Illustrations: 4 Black and White Photographs; Document Type: Article L3 - 10.1196/annals.1373.062 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24029068&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reitz, Thomas L. AU - Xiao, Haiming T1 - Characterization of electrolyte–electrode interlayers in thin film solid oxide fuel cells JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2006/10/20/ VL - 161 IS - 1 M3 - Article SP - 437 EP - 443 SN - 03787753 AB - Abstract: In order to reduce the operating temperature of solid oxide fuel cells (SOFCs), anode-supported cells incorporating thin film (∼10μm) electrolytes in conjunction with anode/electrolyte and cathode/electrolyte interlayers were studied. SOFC button cells were prepared through deposition of colloidal slurries onto anode supported substrates and were analyzed as a function of temperature and polarization via voltammetry and electrochemical impedance spectroscopy (EIS). It was found that the electro-catalytic activity or electrode/electrolyte interfacial areas were enhanced through the addition of these interlayers. This performance improvement was attributed to the introduction of a diffuse mixed conduction region associated with these interlayers. The cathode is thought to benefit disproportionately from this enhancement. Single SOFC button cells with electrode interlayers were then characterized as a function of temperature and polarization to assess the involvement of these interfacial layers. EIS was applied and the data were used to deconvolute component impedances. Finally electrochemical models were developed to provide a more complete understanding of these assemblies under operation. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUEL cells KW - SOLID oxide fuel cells KW - DIRECT energy conversion KW - ELECTRIC batteries KW - EIS KW - Solid oxide fuel cells KW - Thin films KW - Zirconia N1 - Accession Number: 22582814; Reitz, Thomas L. 1; Email Address: Thomas.reitz@wpafb.af.mil Xiao, Haiming 2; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory Wright-Patterson AFB, OH 45433-7251, United States 2: Aerospace Power and Propulsion, UES Corp. Dayton, OH 45432-1894, United States; Source Info: Oct2006, Vol. 161 Issue 1, p437; Subject Term: FUEL cells; Subject Term: SOLID oxide fuel cells; Subject Term: DIRECT energy conversion; Subject Term: ELECTRIC batteries; Author-Supplied Keyword: EIS; Author-Supplied Keyword: Solid oxide fuel cells; Author-Supplied Keyword: Thin films; Author-Supplied Keyword: Zirconia; NAICS/Industry Codes: 418990 All other merchant wholesalers; NAICS/Industry Codes: 335910 Battery manufacturing; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jpowsour.2006.04.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22582814&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Muratore, C. AU - Voevodin, A.A. AU - Hu, J.J. AU - Zabinski, J.S. T1 - Tribology of adaptive nanocomposite yttria-stabilized zirconia coatings containing silver and molybdenum from 25 to 700°C JO - Wear JF - Wear Y1 - 2006/10/20/ VL - 261 IS - 7/8 M3 - Article SP - 797 EP - 805 SN - 00431648 AB - Abstract: The effect of different types and concentrations of metal additions on the tribological properties of yttria-stabilized zirconia-based coatings was investigated in an effort to develop nanocomposite chameleon coatings exhibiting low friction in air throughout a broad temperature range. A hybrid process of magnetron sputtering and pulsed laser deposition was used to grow nanocrystalline yttria-stabilized zirconia (YSZ) imbedded in an amorphous YSZ/metal matrix. Silver was effective as a lubricant at 500°C and lower, while molybdenum formed a soft lubricious oxide at higher temperatures. YSZ–Mo composites exhibited cracks and fissures after deposition, which were enlarged after heating. Cracking was eliminated in YSZ-based coatings containing both silver and molybdenum. The YSZ–Ag–Mo coatings also exhibited moderately low friction coefficients across the entire 25–700°C range. Characterization of the coatings after wear testing revealed that the development of a continuous silver layer protected the underlying YSZ–Mo material from oxidation, provided lubrication up to 500°C, and allowed for the controlled formation of lubricious molybdenum oxide compounds in the wear track at higher temperatures. High-temperature adaptive lubrication mechanisms resulting from noble metal diffusion and soft oxide formation in areas affected by wear are described. [Copyright &y& Elsevier] AB - Copyright of Wear is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACES (Technology) KW - COATING processes KW - THIN films KW - CHROMIUM group KW - Adaptive KW - High-temperature KW - Nanocomposite N1 - Accession Number: 22472363; Muratore, C. 1; Email Address: chris.muratore@wpafb.af.mil Voevodin, A.A. 2 Hu, J.J. 3 Zabinski, J.S. 2; Affiliation: 1: UTC Inc., Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 3: UES Inc., Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Oct2006, Vol. 261 Issue 7/8, p797; Subject Term: SURFACES (Technology); Subject Term: COATING processes; Subject Term: THIN films; Subject Term: CHROMIUM group; Author-Supplied Keyword: Adaptive; Author-Supplied Keyword: High-temperature; Author-Supplied Keyword: Nanocomposite; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.wear.2006.01.029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22472363&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - A. A. Viggiano T1 - Much Improved Upper Limit for the Rate Constant for the Reaction of O2with N2. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2006/10/19/ VL - 110 IS - 41 M3 - Article SP - 11599 EP - 11601 SN - 10895639 AB - The rate constant for the reaction of O2with N2to produce NOplus NO has been measured at 423, 523, and 623 K in a turbulent ion flow tube. Much improved upper limits for this reaction at the three temperatures are 2, 4, and 10 × 10-21cm3s-1, respectively. These results should render this reaction irrelevant when modeling all plasmas involving atmospheric gases. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA (Ionized gases) KW - GASES KW - TEMPERATURE KW - IONIZED gases KW - IONS N1 - Accession Number: 22771372; A. A. Viggiano 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom Air Force Base,Massachusetts 01731-3010; Source Info: Oct2006, Vol. 110 Issue 41, p11599; Subject Term: PLASMA (Ionized gases); Subject Term: GASES; Subject Term: TEMPERATURE; Subject Term: IONIZED gases; Subject Term: IONS; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22771372&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - J. David Jacobs AU - Hilmar Koerner AU - Hendrik Heinz AU - Barry L. Farmer AU - Peter Mirau AU - Patrick H. Garrett AU - Richard A. Vaia T1 - Dynamics of Alkyl Ammonium Intercalants within Organically Modified Montmorillonite:  Dielectric Relaxation and Ionic Conductivity. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2006/10/19/ VL - 110 IS - 41 M3 - Article SP - 20143 EP - 20157 SN - 15206106 AB - The low-frequency (0.01 Hz−10 MHz) dynamic characteristics of alkyl quaternary ammonium exchanged montmorillonite (SC20A) were investigated to determine the correlation between temperature-dependent changes in the interlayer structure and collective mobility of the surfactant. From 25 to 165 °C, SC20A exhibits two interlayer transitions, one ascribed to the melting of the intercalated alkyl chains of the surfactant (20−40 °C) and another associated with an abrupt decrease in the interlayer's coefficient of thermal expansion (100 °C). For this temperature range, the excess surfactant and residual electrolytes present in commercially manufactured SC20A enhance the direct current conductivity and increase low-frequency space-charge polarization, which is believed to occur across percolation paths established by the surfaces of the SC20A crystallites. In contrast, a higher-frequency relaxation, which was less sensitive to process history and impurity content, is ascribed to relaxation within the interlayer at the surfactant−aluminosilicate interface electrostatic couple. The temperature dependence of these dielectric relaxations indicated a drastic increase in mobility as the interlayer organic phase transitions from static and glasslike into molten and mobile. Overall, SC20A displayed features of alternating current universality, including time−temperature superposition, common in other types of disordered ion-conducting media. The presence of long-range transport and its sensitivity to low amounts of impurities imply that from a dynamic perspective the local environment of the surfactants are substantially diverse and a minority fraction, such as at the edge of the crystallite (gallery and aluminosilicate layer), may dominate the lower-frequency dielectric response. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SMECTITE KW - SURFACE active agents KW - THERMAL expansion KW - SOLUTION (Chemistry) N1 - Accession Number: 22771335; J. David Jacobs 1 Hilmar Koerner 1 Hendrik Heinz 1 Barry L. Farmer 1 Peter Mirau 1 Patrick H. Garrett 1 Richard A. Vaia 1; Affiliation: 1: Department of Electrical and Computer Engineering and Computer Science, University of Cincinnati,Cincinnati, Ohio 45221, Universal Technology Corporation, Dayton, Ohio 45432, Department of Mechanicaland Materials Engineering, Wright State University, Dayton, Ohio 45435, and Materials and ManufacturingDirectorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Oct2006, Vol. 110 Issue 41, p20143; Subject Term: SMECTITE; Subject Term: SURFACE active agents; Subject Term: THERMAL expansion; Subject Term: SOLUTION (Chemistry); NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; Number of Pages: 15p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22771335&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Krishnamurthy, Srinivasan AU - Zhi Gang Yu AU - Guha, Shekhar AU - Gonzalez, Leo T1 - High intensity light propagation in InAs. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/10/16/ VL - 89 IS - 16 M3 - Article SP - 161108 PB - American Institute of Physics SN - 00036951 AB - The authors present their experimental and theoretical results on nonlinear absorption of light in InAs. The nonlinear variation of output intensity as a function of input intensity and time are calculated by solving four coupled rate equations simultaneously. All required quantities, including two-photon absorption, free-carrier absorption, Auger and radiative recombination lifetimes, and intrinsic carrier densities, have been obtained from the underlying band structures. The calculated thickness and energy-dependent output intensities in InAs agree very well with the values measured in their pump-probe experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHT KW - ABSORPTION KW - INDIUM arsenide KW - INDIUM compounds KW - EQUATIONS KW - DENSITY N1 - Accession Number: 22919644; Krishnamurthy, Srinivasan 1; Email Address: srini@sri.com Zhi Gang Yu 1 Guha, Shekhar 2 Gonzalez, Leo 2; Affiliation: 1: SRI International, Menlo Park, California 94025 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, Ohio 45433; Source Info: 10/16/2006, Vol. 89 Issue 16, p161108; Subject Term: LIGHT; Subject Term: ABSORPTION; Subject Term: INDIUM arsenide; Subject Term: INDIUM compounds; Subject Term: EQUATIONS; Subject Term: DENSITY; Number of Pages: 3p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.2363970 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22919644&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Holma, H. AU - Kaila, K.U. AU - Kosch, M.J. AU - Rietveld, M.T. T1 - Recognizing the blue emission in artificial aurora JO - Advances in Space Research JF - Advances in Space Research Y1 - 2006/10/15/ VL - 38 IS - 11 M3 - Article SP - 2653 EP - 2658 SN - 02731177 AB - Abstract: On 12th November 2001, during an EISCAT UK/GE artificial aurora campaign, the optical group from the University of Oulu performed optical measurements at the EISCAT site in Ramfjordmoen, including the first measurement of blue emissions in artificial aurora at high latitudes. Optical instruments, including a photometer, a real speed TV camera and a digital camera, were monitoring the emissions. The emissions that the photometer was designed to measure were 557.7 nm (OI), 630.0nm (OI) and 427.8nm (). The energy thresholds of these emissions are approximately 2, 4 and 19eV, respectively. In the natural aurora the blue emission at around 427.8nm is always dominated by the 1NG(0,1) band. However, there are two weak emission bands lying under this strong emission, namely, the N2 VK(4,15) (threshold energy 6eV) and N2 2P(1,5) (threshold 11eV). These excitation energies are lower than the energy needed to excite 1NG(0,1) level and therefore could have a stronger intensity compared with 1NG(0,1) in the spectrum of artificial aurora than in natural aurora. The auroral photometer of the University of Oulu has been designed for investigating natural aurora. The photometer was equipped with two channels measuring different wavelength bands around 427.8nm. These channels were intended to be used to determine rotational temperature from the ratio of the intensities through the channels. However, here we estimate the intensities of the three overlapping emission bands instead. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL measurements KW - SCIENTIFIC apparatus & instruments KW - EMISSIONS (Air pollution) KW - AIR pollution KW - Artificial aurora KW - Auroral blue emission KW - Molecular nitrogen KW - N2+ KW - Rotational band N1 - Accession Number: 23212642; Holma, H. 1; Email Address: Hannu.Holma@oulu.fi Kaila, K.U. 1 Kosch, M.J. 2,3,4 Rietveld, M.T. 5; Affiliation: 1: Department of Physical Sciences, University of Oulu, P.O. Box 3000, 90014 Oulu, Finland 2: Air Force Research Laboratory, Hanscom AFB, Boston, USA 3: Department of Communication Systems, Lancaster University, UK 4: University of Kwazulu-Natal, Durban, South Africa 5: EISCAT Scientific Association, Ramfjordmoen, Norway; Source Info: Oct2006, Vol. 38 Issue 11, p2653; Subject Term: OPTICAL measurements; Subject Term: SCIENTIFIC apparatus & instruments; Subject Term: EMISSIONS (Air pollution); Subject Term: AIR pollution; Author-Supplied Keyword: Artificial aurora; Author-Supplied Keyword: Auroral blue emission; Author-Supplied Keyword: Molecular nitrogen; Author-Supplied Keyword: N2+; Author-Supplied Keyword: Rotational band; NAICS/Industry Codes: 417930 Professional machinery, equipment and supplies merchant wholesalers; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.asr.2005.07.036 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23212642&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Iarve, E. V. AU - Mollenhauer, D. AU - Whitney, T. J. AU - Kim, R. T1 - Strength prediction in composites with stress concentrations: classical Weibull and critical failure volume methods with micromechanical considerations. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2006/10/15/ VL - 41 IS - 20 M3 - Article SP - 6610 EP - 6621 PB - Springer Science & Business Media B.V. SN - 00222461 AB - Application of Weibull statistics to tensile strength prediction in laminated composites with open holes is revisited. Quasi-isotropic carbon fiber laminates with two stacking sequences [45/0/−45/90]s and [0/45/90/−45]s with three different hole sizes of 2.54, 6.35 and 12.7 mm were considered for analysis and experimental examination. The first laminate showed 20% lower strength for smaller and 10% for the larger hole sizes. A novel critical failure volume (CFV) method with minimum scaling length constraint as well as the traditional Weibull integral method were applied. The strength prediction was based on the state of stress in the 0° ply by taking into account the redistribution of stress due to matrix damage in the form of splitting, delamination and matrix cracking of off axis plies. The state of matrix damage precipitating failure was recorded by using X-radiography and examined by a sectioning technique. The measured extent of damage was then included in a 3D stress analysis procedure by using a mesh independent crack modeling method to account for fiber direction stress redistribution. The CFV method gave results within one standard deviation from experimentally observed strength values for both laminates and all three hole sizes. The Weibull integral method underpredicted the strength in all cases from as much as 20–30% for smaller hole sizes to 8% for the large holes. The accuracy of failure predictions using CFV is attributed to the introduction of a minimum scaling length. This length has a physical meaning of the width of a process zone of formation of fiber macro-crack as a result of single fiber break interaction. Direct measurement or rigorous evaluation of this parameter is, however, difficult. Consistent with referenced micromechanical studies, its value was assigned equal to six times the Rosen’s ineffective length. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPOSITE materials KW - LAMINATED materials KW - STRENGTH of materials KW - STRESS concentration KW - WEIBULL distribution KW - MICROMECHANICS KW - STRUCTURAL analysis (Engineering) N1 - Accession Number: 23460789; Iarve, E. V. 1; Email Address: endel.iarve@wpafb.af.mil Mollenhauer, D. 2 Whitney, T. J. 1 Kim, R. 1; Affiliation: 1: University of Dayton Research Institute, 300 College Park Ave., Dayton, OH 45469-0168, USA 2: U.S. Air Force Research Laboratory, AFRL/MLBC, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Oct2006, Vol. 41 Issue 20, p6610; Subject Term: COMPOSITE materials; Subject Term: LAMINATED materials; Subject Term: STRENGTH of materials; Subject Term: STRESS concentration; Subject Term: WEIBULL distribution; Subject Term: MICROMECHANICS; Subject Term: STRUCTURAL analysis (Engineering); Number of Pages: 12p; Illustrations: 6 Diagrams, 4 Charts; Document Type: Article L3 - 10.1007/s10853-006-0200-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23460789&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ivasishin, O.M. AU - Shevchenko, S.V. AU - Vasiliev, N.L. AU - Semiatin, S.L. T1 - A 3-D Monte-Carlo (Potts) model for recrystallization and grain growth in polycrystalline materials JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2006/10/15/ VL - 433 IS - 1/2 M3 - Article SP - 216 EP - 232 SN - 09215093 AB - Abstract: The evolution of microstructure during annealing of deformed polycrystalline metallic materials was modeled using a 3-D Monte-Carlo (Potts) approach in which the initial microstructure, texture (ODF), spatial distribution of the stored energy of deformation, and nucleation mechanism were carefully quantified. The modeling technique was tested using several special cases of 3-D stored-energy distributions and different textures of the as-deformed state. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROMECHANICS KW - MICROSTRUCTURE KW - STEREOLOGY KW - MORPHOLOGY KW - 05.10.Ln KW - 61.43.Bn KW - Grain growth KW - Monte-Carlo model KW - Recrystallization KW - Texture evolution N1 - Accession Number: 22133405; Ivasishin, O.M. 1 Shevchenko, S.V. 1; Email Address: shevchsv@imp.kiev.ua Vasiliev, N.L. 1 Semiatin, S.L. 2; Affiliation: 1: Institute for Metal Physics, 36 Vernadsky Str., 03142 Kiev, Ukraine 2: Air Force Research Laboratory, AFRL/MLLM, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Oct2006, Vol. 433 Issue 1/2, p216; Subject Term: MICROMECHANICS; Subject Term: MICROSTRUCTURE; Subject Term: STEREOLOGY; Subject Term: MORPHOLOGY; Author-Supplied Keyword: 05.10.Ln; Author-Supplied Keyword: 61.43.Bn; Author-Supplied Keyword: Grain growth; Author-Supplied Keyword: Monte-Carlo model; Author-Supplied Keyword: Recrystallization; Author-Supplied Keyword: Texture evolution; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.msea.2006.06.115 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22133405&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dressler, Rainer A. AU - Chiu, Y. AU - Levandier, D. J. AU - Tang, X. N. AU - Hou, Y. AU - Chang, C. AU - Houchins, C. AU - Xu, H. AU - Cheuk-Yiu Ng T1 - The study of state-selected ion-molecule reactions using the vacuum ultraviolet pulsed field ionization-photoion technique. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2006/10/07/ VL - 125 IS - 13 M3 - Article SP - 132306 PB - American Institute of Physics SN - 00219606 AB - This paper presents the methodology to generate beams of ions in single quantum states for bimolecular ion-molecule reaction dynamics studies using pulsed field ionization (PFI) of atoms or molecules in high-n Rydberg states produced by vacuum ultraviolet (VUV) synchrotron or laser photoexcitation. Employing the pseudocontinuum high-resolution VUV synchrotron radiation at the Advanced Light Source as the photoionization source, PFI photoions (PFI-PIs) in selected rovibrational states have been generated for ion-molecule reaction studies using a fast-ion gate to pass the PFI-PIs at a fixed delay with respect to the detection of the PFI photoelectrons (PFI-PEs). The fast ion gate provided by a novel interleaved comb wire gate lens is the key for achieving the optimal signal-to-noise ratio in state-selected ion-molecule collision studies using the VUV synchrotron based PFI-PE secondary ion coincidence (PFI-PESICO) method. The most recent development of the VUV laser PFI-PI scheme for state-selected ion-molecule collision studies is also described. Absolute integral cross sections for state-selected H2+ ions ranging from v+=0 to 17 in collisions with Ar, Ne, and He at controlled translational energies have been obtained by employing the VUV synchrotron based PFI-PESICO scheme. The comparison between PFI-PESICO cross sections for the H2+(HD+)+Ne and H2+(HD+)+He proton-transfer reactions and theoretical cross sections based on quasiclassical trajectory (QCT) calculations and three-dimensional quantum scattering calculations performed on the most recently available ab initio potential energy surfaces is highlighted. In both reaction systems, quantum scattering resonances enhance the integral cross sections significantly above QCT predictions at low translational and vibrational energies. At higher energies, the agreement between experiment and quasiclassical theory is very good. The profile and magnitude of the kinetic energy dependence of the absolute integral cross sections for the H2+(v+=0–2,N+=1)+He proton-transfer reaction unambiguously show that the inclusion of Coriolis coupling is important in quantum dynamics scattering calculations of ion-molecule collisions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONS KW - QUANTUM chemistry KW - MOLECULES KW - IONIZATION (Atomic physics) KW - ATOM-molecule collisions KW - COLLISIONS (Nuclear physics) N1 - Accession Number: 22673537; Dressler, Rainer A. 1; Email Address: rainer.dressler@hanscom.af.mil Chiu, Y. 1 Levandier, D. J. 2 Tang, X. N. 3 Hou, Y. 3 Chang, C. 3 Houchins, C. 3 Xu, H. 3 Cheuk-Yiu Ng 3; Email Address: cyng@chem.ucdavis.edu; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731-3010 2: Institute for Scientific Research, Boston College, Newton, Massachusetts 02159 3: Department of Chemistry, University of California, Davis, California 95616; Source Info: 10/7/2006, Vol. 125 Issue 13, p132306; Subject Term: IONS; Subject Term: QUANTUM chemistry; Subject Term: MOLECULES; Subject Term: IONIZATION (Atomic physics); Subject Term: ATOM-molecule collisions; Subject Term: COLLISIONS (Nuclear physics); Number of Pages: 14p; Illustrations: 1 Diagram, 11 Graphs; Document Type: Article L3 - 10.1063/1.2207609 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22673537&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - John C. Poutsma AU - Anthony J. Midey AU - Timothy H. Thompson AU - Albert A. Viggiano T1 - Absolute Rate Coefficients and Branching Percentages for the Reactions of POxCly- N (4S32) and POxCly- O (3P) at 298 K in a Selected-Ion Flow Tube Instrument. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2006/10/05/ VL - 110 IS - 39 M3 - Article SP - 11315 EP - 11319 SN - 10895639 AB - The absolute rate coefficients and product ion branching percentages at 298 K for the reactions of several POxCly-species with atomic nitrogen (N (4S32)) and atomic oxygen (O (3P)) have been determined in a selected-ion flow tube (SIFT) instrument. POxCly-ions are generated by electron impact on POCl3in a high-pressure source. O atoms are generated by quantitative titration of N atoms with NO, where N atoms are produced by microwave discharge on N2. The experimental procedure allows for the determination of rate coefficients for the reaction of the reactant ion with N (4S32) and O (3P) as well as with N2and NO. None of the ions react with N2or NO, giving an upper limit to the rate coefficient of <5 × 10-12cm3molecules-1s-1. POCl3-and POCl2-do not react with N atoms, giving an upper limit to the rate coefficient of <1 × 10-11cm3molecules-1s-1. The major product ion for POCl3-and POCl2-reacting with O involves loss of Cl from the reactant ion, accounting for >85% of the products. PO2-is a minor product (≤4%) from POCl2- O. Only PO2Cl-reacts with both N and O, directly giving PO2-and PO3-as major products. In addition, calculations of the structures and energies for PO2N, PO2N-, and NCl have been performed at the G3 level of theory to obtain estimates for the energetics of the PO2Cl-reactions. PO2-, PO3-, and PO2Cl2-are all unreactive with both N and O. Comparisons of the reactivity of POxCly-ions with O atoms are made to previous reactivity studies of these ions. In particular, routes that yield the very stable PO2-and PO3-ions are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ION flow dynamics KW - ELECTRONS KW - INTERMEDIATES (Chemistry) KW - IONS N1 - Accession Number: 22617510; John C. Poutsma 1 Anthony J. Midey 1 Timothy H. Thompson 1 Albert A. Viggiano 1; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731; Source Info: Oct2006, Vol. 110 Issue 39, p11315; Subject Term: ION flow dynamics; Subject Term: ELECTRONS; Subject Term: INTERMEDIATES (Chemistry); Subject Term: IONS; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22617510&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jin, O. AU - Mall, S. AU - Sanders, J.H. AU - Sharma, S.K. T1 - Durability of Cu–Al coating on Ti–6Al–4V substrate under fretting fatigue JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2006/10/05/ VL - 201 IS - 3/4 M3 - Article SP - 1704 EP - 1710 SN - 02578972 AB - Abstract: The durability and degradation mechanisms of Cu–Al coating on Ti–6Al–4V substrate under fretting fatigue condition were examined. Fretting fatigue tests were conducted at several applied stress amplitudes with a constant normal contact load. Surface profile measurements on the contact zone showed a gradual coating wear with increasing fretting fatigue cycles at the low applied stress amplitudes, and the coating survived up to one million cycles. At the high applied stress amplitudes either the coating was separated from the substrate due to insufficient interfacial strength or the specimen fractured at locations away from the contact area. The static coefficient of friction (COF) was lower on the coated substrate than that on the un-coated substrate before the application of fretting fatigue loads. After the exposure to fretting fatigue cycles, the static COFs of the coated and the un-coated substrates were almost equal. The surface of the coated substrate thus became relatively rougher with cycling than that of the un-coated substrate from fretting action. Similar behavior was observed from the evolution of tangential force with cycling. The fretting loops between the tangential force and relative slip amplitude of the coated and un-coated substrates were similar, i.e. shapes were almost identical except for the difference in the magnitude of tangential force. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COATING processes KW - FATIGUE KW - THIN films KW - SURFACES (Technology) KW - Coatings KW - Fatigue KW - Fretting KW - Gross slip KW - Partial slip KW - Wear N1 - Accession Number: 22277977; Jin, O. 1 Mall, S. 2; Email Address: Shankar.Mall@afit.edu Sanders, J.H. 3 Sharma, S.K. 3; Affiliation: 1: Department of Mechanical and Industrial Engineering, Mercer University, Macon, GA 30281, United States 2: Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433-7765, United States 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7817, United States; Source Info: Oct2006, Vol. 201 Issue 3/4, p1704; Subject Term: COATING processes; Subject Term: FATIGUE; Subject Term: THIN films; Subject Term: SURFACES (Technology); Author-Supplied Keyword: Coatings; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Fretting; Author-Supplied Keyword: Gross slip; Author-Supplied Keyword: Partial slip; Author-Supplied Keyword: Wear; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.surfcoat.2006.02.051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22277977&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vodopyanov, K. L. AU - Fejer, M. M. AU - Yu, X. AU - Harris, J. S. AU - Lee, Y.-S. AU - Hurlbut, W. C. AU - Kozlov, V. G. AU - Bliss, D. AU - Lynch, C. T1 - Terahertz-wave generation in quasi-phase-matched GaAs. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/10/02/ VL - 89 IS - 14 M3 - Article SP - 141119 PB - American Institute of Physics SN - 00036951 AB - The authors demonstrate an efficient room temperature source of terahertz radiation using femtosecond laser pulses as a pump and GaAs structures with periodically inverted crystalline orientation, such as diffusion-bonded stacked GaAs and epitaxially grown orientation-patterned GaAs, as a nonlinear optical medium. By changing the GaAs orientation-reversal period (504–1277 μm), or the pump wavelength (2–4.4 μm), we were able to generate narrow-bandwidth (∼100 GHz) terahertz wave packets, tunable between 0.9 and 3 THz, with the optical-to-terahertz photon conversion efficiency of 3.3%. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVE packets KW - WAVES (Physics) KW - SPHALERITE KW - SULFIDE minerals KW - WAVELENGTHS KW - PHOTOLITHOGRAPHY KW - OPTICAL radiometry N1 - Accession Number: 22752160; Vodopyanov, K. L. 1; Email Address: vodopyan@stanford.edu Fejer, M. M. 1 Yu, X. 2 Harris, J. S. 2 Lee, Y.-S. 3 Hurlbut, W. C. 3 Kozlov, V. G. 4 Bliss, D. 5 Lynch, C. 5; Affiliation: 1: Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305 2: Solid State Photonics Laboratory, Stanford University, Stanford, California 94305 3: Department of Physics, Oregon State University, Corvallis, Oregon 97331 4: Microtech Instruments, Inc., Eugene, Oregon 97403 5: Hanscom Air Force Research Laboratory, Bedford, Massachusetts 01731; Source Info: 10/2/2006, Vol. 89 Issue 14, p141119; Subject Term: WAVE packets; Subject Term: WAVES (Physics); Subject Term: SPHALERITE; Subject Term: SULFIDE minerals; Subject Term: WAVELENGTHS; Subject Term: PHOTOLITHOGRAPHY; Subject Term: OPTICAL radiometry; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 3p; Illustrations: 1 Diagram, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.2357551 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22752160&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CONF AU - Lai, Shu T. AU - Garrett, Henry B. AU - Mengu Cho AU - Hilgers, Alain T1 - Special Issue on Spacecraft Charging Technology. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2006/10/02/Oct2006 Part 2 Of 4 VL - 34 IS - 5 M3 - Proceeding SP - 1946 EP - 1947 SN - 00933813 AB - Information about several papers discussed at the 9th Spacecraft Charging Technology Conference on spacecraft charging, spacecraft interactions and other related issues is presented. Space weather has been discussed of which it was considered a major driving force controlling the space plasma parameters. The observations of the spatial and time evolution of deep charging inside dielectrics were also presented. KW - CONFERENCES & conventions KW - ASTRONAUTICS -- Congresses KW - ROCKETRY KW - SPACE environment KW - SPACE vehicles -- Electrostatic charging KW - ELECTROSTATICS KW - CONGRESSES N1 - Accession Number: 23838593; Lai, Shu T. 1; Email Address: Shu.Lai@Hanscom.af.mil Garrett, Henry B. 2; Email Address: Henry.B.Garrett@jpl.nasa.gov Mengu Cho 3; Email Address: cho@ele.kyutech.ac.jp Hilgers, Alain 4; Email Address: Alain.Hilgers@esa.int; Affiliation: 1: Air Force Research Laboratory, Hanscom AFB, MA 01731 USA 2: Jet Propulsion Laboratory, Pasadena, CA 91109 USA 3: Department of Electrical Engineering, Kyushu Institute of Technology, Kitakyushu 804–855, Japan 4: ESA/ESTEC/TOS-EMA Noordwijk 2200 AG, The Netherlands; Source Info: Oct2006 Part 2 Of 4, Vol. 34 Issue 5, p1946; Subject Term: CONFERENCES & conventions; Subject Term: ASTRONAUTICS -- Congresses; Subject Term: ROCKETRY; Subject Term: SPACE environment; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: ELECTROSTATICS; Subject Term: CONGRESSES; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 561920 Convention and Trade Show Organizers; Number of Pages: 2p; Illustrations: 4 Black and White Photographs; Document Type: Proceeding UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23838593&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lai, Shu T. AU - Tautz, Maurice F. T1 - Aspects of Spacecraft Charging in Sunlight. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2006/10/02/Oct2006 Part 2 Of 4 VL - 34 IS - 5 M3 - Article SP - 2053 EP - 2061 SN - 00933813 AB - This paper is an overview of spacecraft charging in sunlight. The daylight photoelectron flux emitted from spacecraft surfaces normally exceeds the ambient electron flux. As a result, charging of spacecraft surfaces to positive voltage is expected to occur in sunlight. Indeed, spacecraft are often observed to charge to low positive voltages in sunlight. However, spacecraft can charge to high-level (kiloelectronvolts) negative voltages in sunlight. Why do spacecraft charge negatively in sunlight? One chief reason concerns differential charging between the sunlit and dark sides. For a satellite with dielectric surfaces, an electric field builds up on the shaded surfaces and then wraps around to the sunlit side to form a potential barrier that suppresses the photoemission. A monopole-dipole (for zero spin) or monopole-quadrupole model (for fast spin) describes the differential charging potential distribution due to blocked photoelectrons. It is shown that these cases are similar to a more general multipole potential field in that the surface node potentials satisfy an approximate linear relation. These cases are all driven by the shade side charging so that the onset for charging is approximately the same in sunlight or eclipse if conduction currents through the spacecraft can be neglected. If conduction currents are important, potential barriers can develop on the dark side, leading to suppression of the secondary emission currents and modification of charging onset. The results were briefly compared with observations. Another important reason for negative charging concerns reflectance. Highly reflective mirrors generate substantially reduced photoemission so that current balance can be achieved without barrier formation. The onset for charging in this case depends strongly on the reflectivity. The critical temperature for charging of surface materials under space substorm conditions with different ratios of photoemission current to electron ambient current, corresponding to varying satellite surface reflectivity values, was calculated. Numerical results, which show that with substantially reduced photoemission, highly reflective surfaces charge in sunlight with the critical temperature for onset decreasing with increasing reflectivity, are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles -- Electrostatic charging KW - PHOTOELECTRONS KW - SOLAR energy KW - DIELECTRICS KW - ELECTRIC potential KW - ELECTRIC fields KW - Monopole—dipole KW - monopole-quadrupole KW - photo- emission KW - reflectance KW - spacecraft charging KW - sunlight charging N1 - Accession Number: 23838606; Lai, Shu T. 1; Email Address: Shu.Lai@hanscom.af.mil Tautz, Maurice F. 2; Affiliation: 1: Space Weather Center of Excellence, Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Bedford, MA 01731–3010 USA 2: Atmospheric and Environmental Research (AER)/ Radex, Inc., Lexington, MA 02421 USA; Source Info: Oct2006 Part 2 Of 4, Vol. 34 Issue 5, p2053; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: PHOTOELECTRONS; Subject Term: SOLAR energy; Subject Term: DIELECTRICS; Subject Term: ELECTRIC potential; Subject Term: ELECTRIC fields; Author-Supplied Keyword: Monopole—dipole; Author-Supplied Keyword: monopole-quadrupole; Author-Supplied Keyword: photo- emission; Author-Supplied Keyword: reflectance; Author-Supplied Keyword: spacecraft charging; Author-Supplied Keyword: sunlight charging; NAICS/Industry Codes: 221114 Solar Electric Power Generation; Number of Pages: 9p; Illustrations: 2 Black and White Photographs, 2 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1109/TPS.2006.883362 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23838606&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davis, V. A. AU - Mandell, M. J. AU - Rich, F. J. AU - Cooke, D. L. T1 - Reverse Trajectory Approach to Computing Ionospheric Currents to the Special Sensor Ultraviolet Limb Imager on DMSP. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2006/10/02/Oct2006 Part 2 Of 4 VL - 34 IS - 5 M3 - Article SP - 2062 EP - 2070 SN - 00933813 AB - The special sensor ultraviolet limb imager was developed by the U.S. Naval Research Laboratory and is deployed on the Defense Meteorological Satellite Program (DMSP) F16 polar-orbiting spacecraft. The instrument is experiencing a level of noise that is, at times, interfering with its proper operation. The noise is correlated with the spacecraft chassis potential. The potentials about DMSP and the resulting ionospheric current entering the instrument were computed to determine if the noise could be due to this current. In order to obtain results of sufficient accuracy, it is necessary to use a reverse trajectory technique that effectively integrates over the thermal distribution of incident ions. The reverse trajectory technique is described in detail. Once the resistance between the mirror surface and the chassis is taken into account, the current computed using this approach shows the same dependence on the chassis potential as the observed noise, which supports the conjecture that ionospheric ions are responsible for the noise. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles KW - ARTIFICIAL satellites in telecommunication KW - IONOSPHERE KW - NOISE KW - ULTRAVIOLET astronomy KW - INDUSTRIAL research KW - Current measurement KW - particle tracking KW - plasma interactions KW - plasma measurement KW - space plasma KW - surface charging N1 - Accession Number: 23838607; Davis, V. A. 1; Email Address: Victoria.A.Davis@saic.com Mandell, M. J. 1; Email Address: Myron.M.Mandell@saic.com Rich, F. J. 2; Email Address: Frederick.Rich@hanscom.af.mil Cooke, D. L. 2; Email Address: David.Cooke@hanscom.af.mil; Affiliation: 1: Advanced Concepts Business Unit, Science Applications International Corporation, San Diego, CA 92121 USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Bedford, MA 01731 USA; Source Info: Oct2006 Part 2 Of 4, Vol. 34 Issue 5, p2062; Subject Term: SPACE vehicles; Subject Term: ARTIFICIAL satellites in telecommunication; Subject Term: IONOSPHERE; Subject Term: NOISE; Subject Term: ULTRAVIOLET astronomy; Subject Term: INDUSTRIAL research; Author-Supplied Keyword: Current measurement; Author-Supplied Keyword: particle tracking; Author-Supplied Keyword: plasma interactions; Author-Supplied Keyword: plasma measurement; Author-Supplied Keyword: space plasma; Author-Supplied Keyword: surface charging; NAICS/Industry Codes: 517410 Satellite Telecommunications; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 9p; Illustrations: 1 Black and White Photograph, 10 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1109/TPS.2006.881931 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23838607&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mandell, Myron J. AU - Davis, Victoria A. AU - Cooke, David L. AU - Wheelock, Adrian T. AU - Roth, C. J. T1 - Nascap-2k Spacecraft Charging Code Overview. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2006/10/02/Oct2006 Part 2 Of 4 VL - 34 IS - 5 M3 - Article SP - 2084 EP - 2093 SN - 00933813 AB - Nascap-2k is a modern spacecraft charging code, replacing the older codes NASA Charging Analyzer Program for GEosynchronous Orbit (NASCAP/GEO), NASA Charging Analyzer Program for Low-Earth Orbit (NASCAP/LEO), Potentials Of Large objects in the Auroral Region (POLAR), and Dynamic Plasma Analysis Code (DynaPAC). The code builds on the physical principles, mathematical algorithms, and user experience developed over three decades of spacecraft charging research. Capabilities include surface charging in geosynchronous and interplanetary orbits, sheath, and wake structure, and current collection in low-Earth orbits, and auroral charging. External potential structure and particle trajectories are computed using a finite element method on a nested grid structure and may be visualized within the Nascap-2k interface. Space charge can be treated either analytically, self-consistently with particle trajectories, or consistent with imported plume densities. Particle-in-cell (PIC) capabilities are available to study dynamic plasma effects. Auxiliary programs to Nascap-2k include Object Toolkit (for developing spacecraft surface models) and GridTool (for constructing nested grid structures around spacecraft models). The capabilities of the code are illustrated by way of four examples: charging of a geostationary satellite, self-consistent potentials for a negative probe in a low-Earth orbit spacecraft wake, potentials associated with thruster plumes, and PIC calculations of plasma effects on a very low frequency (about 1 to 20 kHz) antenna. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles -- Electrostatic charging KW - AURORAS KW - GEOSTATIONARY satellites KW - PLASMA sheaths KW - PLUMES (Fluid dynamics) KW - FINITE element method KW - Antenna theory KW - ion engines KW - particle tracking KW - plasma interactions KW - plasma measurement KW - space plasma KW - surface charging KW - UNITED States. National Aeronautics & Space Administration N1 - Accession Number: 23838610; Mandell, Myron J. 1; Email Address: Myron.J.Mandell@saic.com Davis, Victoria A. 1; Email Address: Victoria.A.Davis@saic.com Cooke, David L. 2; Email Address: David.Cooke@hanscom.af.mil Wheelock, Adrian T. 2; Email Address: Adrian.Wheelock@hanscom.af.mil Roth, C. J. 3; Email Address: Christopher.Roth.CTR@Hanscom.af.mil; Affiliation: 1: Science Applications International Corporation, San Diego, CA 92121 USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, MA 01731 USA 3: Atmospheric and Environmental Research, Inc., Lexington, MA 02421–3126 USA; Source Info: Oct2006 Part 2 Of 4, Vol. 34 Issue 5, p2084; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: AURORAS; Subject Term: GEOSTATIONARY satellites; Subject Term: PLASMA sheaths; Subject Term: PLUMES (Fluid dynamics); Subject Term: FINITE element method; Author-Supplied Keyword: Antenna theory; Author-Supplied Keyword: ion engines; Author-Supplied Keyword: particle tracking; Author-Supplied Keyword: plasma interactions; Author-Supplied Keyword: plasma measurement; Author-Supplied Keyword: space plasma; Author-Supplied Keyword: surface charging; Company/Entity: UNITED States. National Aeronautics & Space Administration; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 10p; Illustrations: 15 Diagrams, 1 Chart, 6 Graphs; Document Type: Article L3 - 10.1109/TPS.2006.881934 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23838610&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guillermo, Louis Q. AU - Gal, Thomas J. AU - Mair, Eric A. T1 - Does Obstructive Sleep Apnea Affect Aerobic Fitness? JO - Annals of Otology, Rhinology & Laryngology JF - Annals of Otology, Rhinology & Laryngology Y1 - 2006/10// VL - 115 IS - 10 M3 - Article SP - 715 EP - 720 SN - 00034894 AB - Objectives: We sought to determine whether patients with obstructive sleep apnea (OSA) had an objective change in aerobic fitness during cycle ergometry compared to a normal population. The most accurate test of aerobic fitness is measurement of maximum oxygen consumption (V̇o2max) with cycle ergometry. Methods: We performed a retrospective cohort analysis (247 patients with OSA) of V̇o2max from annual cycle ergometry tests compared to a large control group (normative data from 1.4 million US Air Force tests) in a tertiary care setting. Results: Overall, individuals with OSA had increased V̇o2max when compared to the normalized US Air Force data (p < .001). Patients with an apnea-hypopnea index of greater than 20 demonstrated a decreased V̇o2max as compared to normalized values (p < .00 1). No differences in V̇o2max were observed after either medical or surgical therapy for OSA. Conclusions: Overall, in a US Air Force population, OSA does not predict a decrease in aerobic fitness as measured by cycle ergometry. However, patients with an apnea-hypopnea index of greater than 20 have a statistically significant decrease in aerobic fitness compared to the normal population. This study demonstrates the effects of USA on aerobic fitness. Further correlation of fitness testing results with USA severity and treatment is needed. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of Otology, Rhinology & Laryngology is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROBIC exercises KW - SLEEP apnea syndromes KW - AEROBIC capacity KW - COHORT analysis KW - UNITED States KW - aerobic fitness KW - cycle ergometry KW - obstructive sleep apnea KW - UNITED States. Air Force N1 - Accession Number: 23138824; Guillermo, Louis Q. 1 Gal, Thomas J. 1 Mair, Eric A. 1; Email Address: emair@ceenta.com; Affiliation: 1: Department of Otolaryngology-Head and Neck Surgery, Wilford Hall United States Air Force Medical Center, San Antonio, Texas; Source Info: Oct2006, Vol. 115 Issue 10, p715; Subject Term: AEROBIC exercises; Subject Term: SLEEP apnea syndromes; Subject Term: AEROBIC capacity; Subject Term: COHORT analysis; Subject Term: UNITED States; Author-Supplied Keyword: aerobic fitness; Author-Supplied Keyword: cycle ergometry; Author-Supplied Keyword: obstructive sleep apnea; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23138824&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coletta, Damon AU - Feaver, Peter D. T1 - Civilian Monitoring of U.S. Military Operations in the Information Age. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 2006/10// VL - 33 IS - 1 M3 - Article SP - 106 EP - 126 SN - 0095327X AB - Recent research on U.S. civil-military relations has applied principal-agent logic to analyze the post-cold war friction between civilian authorities and top military commanders. This article proposes a greater emphasis on bargaining to focus on the effects of new monitoring technologies available to the civilian principal in the information age. As monitoring capabilities increase and military agents perceive their autonomy disappearing, tacit bargaining over the president's level of resource commitment to a crisis should become more prevalent. This idea receives support from a comparison across case studies of the limited use of force taken from different technological eras. A new style of civil-military bargaining presents both challenges and opportunities to the traditional conception of military professionalism. [ABSTRACT FROM AUTHOR] AB - Copyright of Armed Forces & Society (0095327X) is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CIVIL-military relations KW - CIVIL defense KW - MILITARY government KW - ARMED Forces -- Political activity KW - MILITARY sociology KW - ARMED Forces KW - ARMIES KW - COMMAND of troops KW - civil-military relations KW - command KW - information KW - Military Policy and Organizations KW - principal-agent N1 - Accession Number: 23851059; Coletta, Damon 1; Email Address: damon.coletta@usafa.af.mil Feaver, Peter D. 2; Email Address: peter.feaver@duke.edu; Affiliation: 1: United States Air Force Academy 2: Duke University; Source Info: Oct2006, Vol. 33 Issue 1, p106; Subject Term: CIVIL-military relations; Subject Term: CIVIL defense; Subject Term: MILITARY government; Subject Term: ARMED Forces -- Political activity; Subject Term: MILITARY sociology; Subject Term: ARMED Forces; Subject Term: ARMIES; Subject Term: COMMAND of troops; Author-Supplied Keyword: civil-military relations; Author-Supplied Keyword: command; Author-Supplied Keyword: information; Author-Supplied Keyword: Military Policy and Organizations; Author-Supplied Keyword: principal-agent; Number of Pages: 21p; Document Type: Article L3 - 10.1177/0095327X05282530 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23851059&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bechel, Vernon T. AU - Negilski, Mathew AU - James, Joshua T1 - Limiting the permeability of composites for cryogenic applications JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2006/10// VL - 66 IS - 13 M3 - Article SP - 2284 EP - 2295 SN - 02663538 AB - Abstract: The correlation between thermal fatigue-generated networks of transverse micro-cracks and the permeability of carbon fiber polymer matrix composites (PMCs) was the focal point of this effort. Epoxy and bismaleimide matrix PMCs were cycled between liquid nitrogen temperature (−196°C) and elevated temperature. The samples were then optically examined for micro-cracks and evaluated for their tendency for leakage in a fluid containment application. Composite coupons were tested for the rate of flow of low-pressure helium gas in the through-thickness direction at room temperature (RT) and liquid nitrogen (LN2) temperature as a function of the applied cycles. The choice of lay-up drastically influenced the permeability. Samples with [0/90]2S and [0/90/45/−45]S lay-ups resisted leakage at least 100 cycles more than the [0/45/−45/90]S samples. The temperature of the elevated portion of the thermal cycle also had a large impact on the initiation and propagation of transverse cracks and the eventual creation of complete through-thickness gas flow paths that were the source of permeability. For example, for the [0/45/−45/90]S lay-up of IM7/5250-4 a relatively moderate 57°C reduction in the elevated hold temperature decreased permeability by up to 100 times. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERMEABILITY KW - CRYOELECTRONICS KW - COMPOSITE materials KW - POLYMERIC composites KW - A. Polymer-matrix composites KW - B. Environmental degradation KW - C. Residual stress KW - C. Transverse cracking KW - Cryogenic cycling N1 - Accession Number: 21666545; Bechel, Vernon T. 1; Email Address: vernon.bechel@wpafb.af.mil Negilski, Mathew 2 James, Joshua 3; Affiliation: 1: Air Force Research Laboratory, AFRL/MLBC, Wright Patterson AFB, OH 45433, United States 2: Aerospace Engineering Department, Purdue University, Lafayette, IN 47907, United States 3: University of Virginia, School of Engineering and Applied Science, Charlottesville, VA 22903, United States; Source Info: Oct2006, Vol. 66 Issue 13, p2284; Subject Term: PERMEABILITY; Subject Term: CRYOELECTRONICS; Subject Term: COMPOSITE materials; Subject Term: POLYMERIC composites; Author-Supplied Keyword: A. Polymer-matrix composites; Author-Supplied Keyword: B. Environmental degradation; Author-Supplied Keyword: C. Residual stress; Author-Supplied Keyword: C. Transverse cracking; Author-Supplied Keyword: Cryogenic cycling; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.compscitech.2005.12.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21666545&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Newman, Mark A. AU - Hatfield, Kirk AU - Hayworth, Joel AU - Rao, P. Suresh C. AU - Stauffer, Tom T1 - Inverse Characterization of NAPL Source Zones. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2006/10//10/1/2006 VL - 40 IS - 19 M3 - Article SP - 6044 EP - 6050 SN - 0013936X AB - This work presents a possible tool for inverse characterization of NAPL (nonaqueous phase liquid) source zones in terms of contaminant mass flux. A hybrid solution technique was applied that considers contaminant transport through a vertical flux plane. The hybrid solution technique takes advantage of the robust solution capabilities of simulated annealing (SA) and the uncertainty estimation capabilities of minimum relative entropy (MRE). The coupled technique (SA-MRE) provides probability density functions and confidence intervals that would not be available from an independent SA algorithm, and they are obtained more efficiently than if provided by an independent MRE algorithm. The SA-MRE method was used to characterize a NAPL source zone that was emplaced in a three-dimensional aquifer model. When dissolution experiments were complete, the aquifer model was excavated, and the distribution of NAPL zones was recorded using digital images of excavation grids. The excavation images were compiled into a three-dimensional representation of the source zone for comparison with and validation of modeling results. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONAQUEOUS phase liquids KW - POLLUTANTS KW - ENTROPY KW - DENSITY functionals KW - FUNCTIONAL analysis KW - ALGORITHMS KW - MATHEMATICAL models KW - ENVIRONMENTAL sciences KW - ENVIRONMENTAL protection N1 - Accession Number: 22703384; Newman, Mark A. 1; Email Address: markn@ce.ufl.edu Hatfield, Kirk 1 Hayworth, Joel 2 Rao, P. Suresh C. 3 Stauffer, Tom 2; Affiliation: 1: Department of Civil and Coastal Engineering, University of Florida, P.O. Box 116580, Gainesville, Florida 32611-6450. 2: Air Force Research Laboratory, Tyndall AFB, Florida. 3: School of Civil Engineering, Purdue University, West Lafayette, Indiana.; Source Info: 10/1/2006, Vol. 40 Issue 19, p6044; Subject Term: NONAQUEOUS phase liquids; Subject Term: POLLUTANTS; Subject Term: ENTROPY; Subject Term: DENSITY functionals; Subject Term: FUNCTIONAL analysis; Subject Term: ALGORITHMS; Subject Term: MATHEMATICAL models; Subject Term: ENVIRONMENTAL sciences; Subject Term: ENVIRONMENTAL protection; Number of Pages: 7p; Document Type: Article L3 - 10.1021/es060437s UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22703384&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nair, Naveen V. AU - Melapudi, Vikram R. AU - Jimenez, Hector R. AU - Xin Liu AU - Yiming Deng AU - Zhiwei Zeng AU - Udpa, Lalita AU - Moran, Thomas J. AU - Udpa, Satish S. T1 - A GMR-Based Eddy Current System for NDE of Aircraft Structures. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2006/10// VL - 42 IS - 10 M3 - Article SP - 3312 EP - 3314 SN - 00189464 AB - Onsite real-time nondestructive evaluation of aircraft using eddy current techniques has gained significance in the past few years. In this paper, emphasis is placed on developing a flexible and a fast real-time inspection system using giant magnetoresistive (GMR) field sensors. Experimental signals are compared with finite-element model (FEM) model simulations and signals acquired using traditional data acquisition methods. Several advantages of the improved design are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETORESISTANCE KW - GALVANOMAGNETIC effects KW - EDDY currents (Electric) KW - ELECTRIC resistance KW - MAGNETIC fields KW - NONDESTRUCTIVE testing KW - AIRFRAMES KW - Eddy current KW - giant magnetoresistive (GMR) sensors KW - nondestructive evaluation N1 - Accession Number: 22739732; Nair, Naveen V. 1 Melapudi, Vikram R. 1 Jimenez, Hector R. 1 Xin Liu 1 Yiming Deng 1 Zhiwei Zeng 1 Udpa, Lalita 1 Moran, Thomas J. 2 Udpa, Satish S. 1; Affiliation: 1: Michigan State University, East Lansing, MI 48824 USA 2: Air Force Research Laboratory/Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, OH 454321 USA; Source Info: Oct2006, Vol. 42 Issue 10, p3312; Subject Term: MAGNETORESISTANCE; Subject Term: GALVANOMAGNETIC effects; Subject Term: EDDY currents (Electric); Subject Term: ELECTRIC resistance; Subject Term: MAGNETIC fields; Subject Term: NONDESTRUCTIVE testing; Subject Term: AIRFRAMES; Author-Supplied Keyword: Eddy current; Author-Supplied Keyword: giant magnetoresistive (GMR) sensors; Author-Supplied Keyword: nondestructive evaluation; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1109/TMAG.2006.879820 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22739732&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Birman, Victor AU - Byrd, Larry W. T1 - Functionally Graded Stitched Laminates: Illustration on the Example of a Double Cantilever Beam. JO - Journal of Aerospace Engineering JF - Journal of Aerospace Engineering Y1 - 2006/10// VL - 19 IS - 4 M3 - Article SP - 217 EP - 226 PB - American Society of Civil Engineers SN - 08931321 AB - Although stitched laminates have been shown effective in preventing delamination failure, the presence of stitches results in a degraded in-plane strength and stiffness in such structures. The solution suggested in the paper is based on using stitches only in a part of the structure where they serve as arrestors of delamination cracks, while the part subject to considerable in-plane loading could remain unstitched. This approach, that could be called “functionally graded stitching,” is considered on the example of a double cantilever beam (DCB) with a preexisting delamination crack that has penetrated into the stitched region of the beam. As is shown in the paper, the distribution of stitches in a functionally graded DCB (and in any other laminated structure) should be chosen to prevent three major failure modes. These modes include the failure of the stitches, bending failure of the unstitched delaminated section of the structure, and continuous crack propagation through the stitched region. The results obtained in the paper for the static problem clearly illustrate the feasibility of using functionally graded stitched laminates retaining in-plane strength and stiffness, while providing barriers to delamination cracks in less loaded regions of the structure. Additionally, the approach to the solution of the dynamic problem presented in the paper may be applied to the analysis of fatigue delamination cracks in partially stitched structures. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerospace Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAMINATED materials KW - COMPOSITE materials -- Delamination KW - STRENGTH of materials KW - STRAINS & stresses (Mechanics) KW - STRUCTURAL engineering KW - Beams KW - Cantilevers KW - Laminates N1 - Accession Number: 22389287; Birman, Victor 1; Email Address: vbirman@umr.edu Byrd, Larry W. 2; Affiliation: 1: Professor, Engineering Education Center, Univ. of Missouri-Rolla, One University Blvd., St. Louis, MO 63121 2: Air Force Research Laboratory, AFRL/VASM, Wright-Patterson Air Force Base, OH 45433; Source Info: Oct2006, Vol. 19 Issue 4, p217; Subject Term: LAMINATED materials; Subject Term: COMPOSITE materials -- Delamination; Subject Term: STRENGTH of materials; Subject Term: STRAINS & stresses (Mechanics); Subject Term: STRUCTURAL engineering; Author-Supplied Keyword: Beams; Author-Supplied Keyword: Cantilevers; Author-Supplied Keyword: Laminates; Number of Pages: 10p; Illustrations: 2 Diagrams, 13 Graphs; Document Type: Article L3 - 10.1061/(ASCE)0893-1321(2006)19:4(217) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22389287&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Preusse, Peter AU - Ern, Manfred AU - Eckermann, Stephen D. AU - Warner, Christopher D. AU - Picard, Richard H. AU - Knieling, Peter AU - Krebsbach, Mac AU - Russell, James M. AU - Mlynczak, Martin G. AU - Mertens, Christopher J. AU - Riese, Martin T1 - Tropopause to mesopause gravity waves in August: Measurement and modeling JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2006/10// VL - 68 IS - 15 M3 - Article SP - 1730 EP - 1751 SN - 13646826 AB - Abstract: Global gravity wave (GW) distributions are retrieved from infrared emission limb soundings taken by the CRISTA instrument in August 1997 and by the SABER instrument in August 2003. The investigated altitudes cover the whole middle atmosphere from the tropopause to the mesopause. The data agree semi-quantitatively in their salient features and only small deviations due to the different meteorological conditions in the two years are observed. Of particular interest is the decrease of GW activity at the top of the southern polar vortex and an accompanying shift of GW activity towards the subtropics in the mesosphere. We emulate this feature by two conceptionally different models, the Warner and McIntyre spectral parameterization scheme and the GROGRAT GW ray tracer. Both models indicate that saturation limits and GW breaking are the governing processes in creating this structure. Also, both models can well reproduce the global distributions except for two important points: (1) convectively generated GWs in the northern subtropics are largely underestimated; (2) northern hemisphere high latitude activity is grossly overestimated. These points indicate that GW distribution in general circulation models are not fully realistic. Refined measurements are required to constrain more realistic GW source distributions. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAVITY waves KW - MIDDLE atmosphere KW - ATMOSPHERE KW - PHYSICAL geography KW - Gravity waves KW - Mesosphere KW - Ray tracing KW - Satellite measurements KW - Stratosphere N1 - Accession Number: 22597529; Preusse, Peter 1; Email Address: p.preusse@fz-juelich.de Ern, Manfred 1 Eckermann, Stephen D. 2 Warner, Christopher D. 3 Picard, Richard H. 4 Knieling, Peter 5 Krebsbach, Mac 1 Russell, James M. 6 Mlynczak, Martin G. 7 Mertens, Christopher J. 7 Riese, Martin 1; Affiliation: 1: ICG-I, Forschungszentrum Juelich, Juelich, Germany 2: E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, DC, USA 3: Centre for Atmospheric Sciences, University of Cambridge, Cambridge, UK 4: Air Force Research Laboratory, Hanscom Air Force Base, Hanscom, MA, USA 5: Department of Physics, Wuppertal University (BUW), Wuppertal, Germany 6: Hampton University, Hampton, VA, USA 7: NASA Langley Research Center, Hampton, VA, USA; Source Info: Oct2006, Vol. 68 Issue 15, p1730; Subject Term: GRAVITY waves; Subject Term: MIDDLE atmosphere; Subject Term: ATMOSPHERE; Subject Term: PHYSICAL geography; Author-Supplied Keyword: Gravity waves; Author-Supplied Keyword: Mesosphere; Author-Supplied Keyword: Ray tracing; Author-Supplied Keyword: Satellite measurements; Author-Supplied Keyword: Stratosphere; Number of Pages: 22p; Document Type: Article L3 - 10.1016/j.jastp.2005.10.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22597529&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - George, Tommy J. AU - Shen, M.-H. Herman AU - Nicholas, Theodore AU - Cross, Charles J. T1 - A New Multiaxial Fatigue Testing Method for Variable-Amplitude Loading and Stress Ratio. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2006/10// VL - 128 IS - 4 M3 - Article SP - 857 EP - 864 SN - 07424795 AB - A new vibration-based multiaxial fatigue testing methodology for assessing high-cycle turbine engine material fatigue strength at various stress ratios is presented. The idea is to accumulate fatigue energy on a base-excited plate specimen at high-frequency resonant modes and to complete a fatigue test in a much more efficient way at very low cost. The methodology consists of (1) a topological design procedure, incorporating a finite element model, to characterize the shape of the specimens for ensuring the required stress state/pattern, (2) a vibration feedback empirical procedure for achieving the high-cycle fatigue experiments with variable-amplitude loading, and finally (3) a yielding procedure for achieving various uniaxial stress ratios. The performance of the methodology is demonstrated by the experimental results from mild steel, 6061-T6 aluminum, and Ti-6Al-4V plate specimens subjected to fully reversed bending for both uniaxial and biaxial stress states. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE testing machines KW - VIBRATION tests KW - GAS turbines KW - TURBINES -- Vibration KW - STRAINS & stresses (Mechanics) KW - AXIAL loads N1 - Accession Number: 24311413; George, Tommy J. 1 Shen, M.-H. Herman 1; Email Address: shen.1@osu.edu Nicholas, Theodore 2 Cross, Charles J. 2; Affiliation: 1: Department of Aerospace Engineering and Aviation, The Ohio State University, Columbus, OH 43210 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433; Source Info: Oct2006, Vol. 128 Issue 4, p857; Subject Term: FATIGUE testing machines; Subject Term: VIBRATION tests; Subject Term: GAS turbines; Subject Term: TURBINES -- Vibration; Subject Term: STRAINS & stresses (Mechanics); Subject Term: AXIAL loads; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 8p; Illustrations: 1 Black and White Photograph, 12 Diagrams, 8 Charts, 3 Graphs; Document Type: Article L3 - 10.1115/1.1788687 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24311413&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hall, Richard B. AU - Qi, H. Jerry T1 - Special Issue on Time Dependent Behavior in Polymeric Composites and Their Matrices. JO - Journal of Engineering Materials & Technology JF - Journal of Engineering Materials & Technology Y1 - 2006/10// VL - 128 IS - 4 M3 - Article SP - 477 EP - 477 SN - 00944289 AB - A preface for the October 2006 issue of the "Journal of Engineering Materials and Technology" is presented. KW - PREFACES & forewords KW - ENGINEERING N1 - Accession Number: 23199186; Hall, Richard B. 1 Qi, H. Jerry 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base 2: Special Issue Guest Editor Department of Mechanical Engineering, University of Colorado; Source Info: Oct2006, Vol. 128 Issue 4, p477; Subject Term: PREFACES & forewords; Subject Term: ENGINEERING; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23199186&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Hill, Alexander AU - Westermann, Edward B. T1 - Notes & Comments. JO - Journal of Military History JF - Journal of Military History Y1 - 2006/10// VL - 70 IS - 4 M3 - Editorial SP - 1099 EP - 1103 SN - 08993718 AB - This article presents a discussion on Edward Westermann's review of Alexander Hill's book "The War Behind the Eastern Front: The Soviet Partisan Movement in North-West Russia, 1941-1944." An overview of the arguments raised in the book is presented. Response of Westermann to a commentary on his review is detailed. KW - BOOKS KW - WAR KW - REVIEWS KW - HILL, Alexander KW - WESTERMANN, Edward KW - WAR Behind the Eastern Front: The Soviet Partisan Movement in North-West Russia 1941-1944, The (Book) N1 - Accession Number: 22731603; Hill, Alexander 1 Westermann, Edward B. 2; Affiliation: 1: University of Calgary, Calgary, Alberta, Canada 2: United States Air Force Academy, Colorado Springs, Colorado; Source Info: Oct2006, Vol. 70 Issue 4, p1099; Subject Term: BOOKS; Subject Term: WAR; Subject Term: REVIEWS; Reviews & Products: WAR Behind the Eastern Front: The Soviet Partisan Movement in North-West Russia 1941-1944, The (Book); People: HILL, Alexander; People: WESTERMANN, Edward; Number of Pages: 5p; Document Type: Editorial UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22731603&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sangwon Ko AU - Wenhsing Wu AU - Jenshan Lin AU - Soohwan Jang AU - Fan Ren AU - Pearton, Stephen AU - Fitch, Robert AU - Gillespie, James T1 - A high efficiency class-F power amplifier using AIGaN/GaN HEMT. JO - Microwave & Optical Technology Letters JF - Microwave & Optical Technology Letters Y1 - 2006/10// VL - 48 IS - 10 M3 - Article SP - 1955 EP - 1957 SN - 08952477 AB - This paper reports the development of a high efficiency and compact power amplifier using an AlGaN/GaN high electron mobility transistor (HEMT). The class-F load network in microstrip topology was applied to a 0.75-μm gate length and 300-μm gate width AlGaN/GaN HEMT. The 1 dB compression point of the output power was 24 dBm at 900 MHz. The peak power added efficiency of 38% was optimized at output power of 24.5 dBm, which is almost the same as the 1 dB compression point. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 1955–1957, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21832 [ABSTRACT FROM AUTHOR] AB - Copyright of Microwave & Optical Technology Letters is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC amplifiers KW - TRANSISTORS KW - STRIP transmission lines KW - ELECTRIC power KW - POWER amplifiers KW - class-F power amplifier KW - Ga-N KW - high efficiency KW - power amplifier N1 - Accession Number: 21749405; Sangwon Ko 1 Wenhsing Wu 1 Jenshan Lin 1 Soohwan Jang 1 Fan Ren 1 Pearton, Stephen 1 Fitch, Robert 2 Gillespie, James 2; Affiliation: 1: Department of Electrical and Electronics Engineering, University of Florida, Gainesville, FL 32611 2: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH 45433-7322; Source Info: Oct2006, Vol. 48 Issue 10, p1955; Subject Term: ELECTRONIC amplifiers; Subject Term: TRANSISTORS; Subject Term: STRIP transmission lines; Subject Term: ELECTRIC power; Subject Term: POWER amplifiers; Author-Supplied Keyword: class-F power amplifier; Author-Supplied Keyword: Ga-N; Author-Supplied Keyword: high efficiency; Author-Supplied Keyword: power amplifier; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 3p; Illustrations: 1 Color Photograph, 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1002/mop.21832 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21749405&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mocofanescu, A. AU - Shaw, K.D. T1 - Stimulated Brillouin scattering phase conjugating properties of long multimode optical fibers JO - Optics Communications JF - Optics Communications Y1 - 2006/10// VL - 266 IS - 1 M3 - Article SP - 307 EP - 316 SN - 00304018 AB - Abstract: This paper describes and characterizes a detailed experiment that proves the phase conjugating properties of stimulated Brillouin scattering in multimode fibers (km of length), a problem still in debate in the literature, by studying the random aberrations correction abilities of this nonlinear interaction. Detailed qualitative and quantitative evaluation of aberration correction, by using the M 2 beam propagation ratio as a criterion to assess beam quality of the beams, proves the phase conjugation via SBS in long MM fibers. A new parameter to characterize the efficiency of the SBS phase conjugation process is proposed and conditions to obtain a complete healing of distortions (complete phase conjugation) are discussed. [Copyright &y& Elsevier] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICS KW - FIBER optics KW - OPTICAL waveguides KW - OPTICAL communications KW - Fibers KW - Nonlinear optics KW - Phase conjugation KW - Stimulated Brillouin scattering N1 - Accession Number: 22396377; Mocofanescu, A. 1; Email Address: amocofanescu@rics.bwh.harvard.edu Shaw, K.D. 2; Affiliation: 1: Center for High Technology Materials, University of New Mexico, 1313 Goddard SE, Albuquerque, NM 87106, United States 2: Air Force Research Laboratory, AFRL/DELO, 3550 Aberdeen Avenue, SE, Kirtland AFB, NM 87117, United States; Source Info: Oct2006, Vol. 266 Issue 1, p307; Subject Term: OPTICS; Subject Term: FIBER optics; Subject Term: OPTICAL waveguides; Subject Term: OPTICAL communications; Author-Supplied Keyword: Fibers; Author-Supplied Keyword: Nonlinear optics; Author-Supplied Keyword: Phase conjugation; Author-Supplied Keyword: Stimulated Brillouin scattering; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.optcom.2006.04.079 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22396377&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Amemiya, N. AU - Jiang, Z. AU - Yoda, K. AU - Kimura, F. AU - Levin, G.A. AU - Barnes, P.N. T1 - Comparison between measured and numerically calculated magnetization losses in multifilamentary YBCO coated conductors JO - Physica C JF - Physica C Y1 - 2006/10// VL - 445-448 M3 - Article SP - 707 EP - 711 SN - 09214534 AB - Abstract: The measured magnetization losses of several kinds of multifilamentary YBCO coated conductors were compared with the theoretical values which were calculated using a two-dimensional FEM model for electromagnetic field analysis of coated conductors. Through the comparison between measured and numerically calculated coupling loss components, the transverse resistances between filaments were determined. The magnetization losses measured at various frequencies were discussed on, using these determined transverse resistances. The overall magnetization losses were calculated based on the determined transverse resistances and compared with the measured values to assess the validity of the numerical model. [Copyright &y& Elsevier] AB - Copyright of Physica C is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIZATION KW - SUPERCONDUCTORS KW - FINITE element method KW - ELECTROMAGNETIC fields KW - AC loss KW - Coated conductor KW - Multifilament KW - YBCO N1 - Accession Number: 22255629; Amemiya, N. 1; Email Address: ame@rain.dnj.ynu.ac.jp Jiang, Z. 1 Yoda, K. 1 Kimura, F. 1 Levin, G.A. 2 Barnes, P.N. 2; Affiliation: 1: Faculty of Engineering, Department of Electrical and Computer Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya, Yokohama 240-8501, Japan 2: Propulsion Directorate, Air Force Research Laboratory, 2645 Fifth Street, Wright-Patterson Air Force Base, OH 45433-7919, USA; Source Info: Oct2006, Vol. 445-448, p707; Subject Term: MAGNETIZATION; Subject Term: SUPERCONDUCTORS; Subject Term: FINITE element method; Subject Term: ELECTROMAGNETIC fields; Author-Supplied Keyword: AC loss; Author-Supplied Keyword: Coated conductor; Author-Supplied Keyword: Multifilament; Author-Supplied Keyword: YBCO; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.physc.2006.05.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22255629&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Antonsen, Erik L. AU - Burton, Rodney L. AU - Reed, Garrett A. AU - Spanjers, Gregory G. T1 - Fast surface temperature measurement of Teflon propellant-in-pulsed ablative discharges using HgCdTe photovoltaic cells. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2006/10// VL - 77 IS - 10 M3 - Article SP - 103107 PB - American Institute of Physics SN - 00346748 AB - High-speed mercury cadmium telluride photovoltaic detectors, sensitive to infrared emission, are investigated as a means of measuring surface temperature on a microsecond time frame during pulsed ablative discharges with Teflon™ as the ablated material. Analysis is used to derive a governing equation for detector output voltage for materials with wavelength dependent emissivity. The detector output voltage is experimentally calibrated against thermocouples embedded in heated Teflon. Experimental calibration is performed with Teflon that has been exposed to ∼200 pulsed discharges and non-plasma-exposed Teflon and is compared to theoretical predictions to analyze emissivity differences. The diagnostic capability is evaluated with measurements of surface temperature from the Teflon propellant of electric micropulsed plasma thrusters. During the pulsed current discharge, there is insufficient information to claim that the surface temperature is accurately measured. However, immediately following the discharge, the postpulse cooling curve is measured. The statistical spread of postpulse surface temperature from shot to shot, most likely due to arc constriction and localization, is investigated to determine an operational envelope for postpulse temperature and mass ablation. This information is useful for determining postpulse ablation contributions to mass loss as well as evaluation of theoretical discharge models currently under development. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TEMPERATURE measurements KW - DETECTORS KW - POLYTEF KW - PHOTOVOLTAIC cells KW - THERMOCOUPLES KW - PHYSICAL measurements N1 - Accession Number: 23073082; Antonsen, Erik L. 1; Email Address: eantonse@uiuc.edu Burton, Rodney L. 1 Reed, Garrett A. 2 Spanjers, Gregory G. 3; Affiliation: 1: University of Illinois at Urbana-Champaign, Illinois 61801 2: ERC Inc., Edwards AFB, California 93524 3: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117; Source Info: Oct2006, Vol. 77 Issue 10, p103107; Subject Term: TEMPERATURE measurements; Subject Term: DETECTORS; Subject Term: POLYTEF; Subject Term: PHOTOVOLTAIC cells; Subject Term: THERMOCOUPLES; Subject Term: PHYSICAL measurements; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables; Number of Pages: 9p; Illustrations: 1 Color Photograph, 1 Black and White Photograph, 3 Diagrams, 7 Graphs; Document Type: Article L3 - 10.1063/1.2360781 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23073082&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ruden, E. L. AU - Shouyin Zhang AU - Wurden, G. A. AU - Intrator, T. P. AU - Renneke, R. AU - Waganaar, W. J. AU - Analla, F. T. AU - Grabowski, T. C. T1 - Multichord optical interferometry of FRX-L’s field reversed configuration. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2006/10// VL - 77 IS - 10 M3 - Article SP - 103502 PB - American Institute of Physics SN - 00346748 AB - A 0.633 μm laser interferometer provides detailed time resolved information about the spatial distribution of the plasma density of field reversed configurations (FRC’s) produced by the FRX-L experiment at Los Alamos National Laboratory. This experiment is an effort to produce a magnetized plasma with closed field lines suitable for compression by a solid metal liner imploded by the Shiva Star capacitor bank at the Air Force Research Laboratory. The interferometer probes a fanned array of eight chords through the FRC midplane, measuring the line integrated free electron density via its effect on optical phase shift relative to eight reference beams as a function of time. The reference beams are given nominally identical optical paths, except that they are folded for compactness and given an 80 MHz higher optical frequency by use of a Bragg cell beam splitter. After the beams are recombined, interference results in 80 MHz electromagnetic beat waves with dynamic phase shifts equal to those of the corresponding optical probes. Quadrature mixing of the electronically monitored light is then performed with rf components. Noteworthy features of the interferometer’s design are the unique compact folding scheme of the reference paths, inclusion of a fused quartz tube in the reference path similar to that of the FRC’s vacuum vessel to compensate for cylindrical lensing, and transmission of the interfering light via optical fibers to a rf shielded room for processing. Extraneous contributions to the phase shift due to vibration resulting from the system’s pulsed magnetic field, and dynamic refractive changes in or near the fused quartz tube wall (possibly due to radiation heating) are corrected for. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERFEROMETRY KW - OPTICAL measurements KW - PLASMA density KW - ELECTRON distribution KW - MAGNETIC fields N1 - Accession Number: 23073221; Ruden, E. L. 1; Email Address: edward.ruden@kirtland.af.mil Shouyin Zhang 2 Wurden, G. A. 2 Intrator, T. P. 2 Renneke, R. 2 Waganaar, W. J. 2 Analla, F. T. 3 Grabowski, T. C. 3; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, New Mexico 87117 2: Los Alamos National Laboratory, Los Alamos, New Mexico 87545 3: Science Applications International Corporation, Albuquerque, New Mexico 87106; Source Info: Oct2006, Vol. 77 Issue 10, p103502; Subject Term: INTERFEROMETRY; Subject Term: OPTICAL measurements; Subject Term: PLASMA density; Subject Term: ELECTRON distribution; Subject Term: MAGNETIC fields; Number of Pages: 5p; Illustrations: 3 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.2354568 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23073221&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bartha, B.B. AU - Nicholas, T. AU - Farris, T.N. T1 - Modeling of geometry effects in fretting fatigue JO - Tribology International JF - Tribology International Y1 - 2006/10// VL - 39 IS - 10 M3 - Article SP - 1131 EP - 1141 SN - 0301679X AB - Abstract: The stress field that results from two bodies in contact is an important aspect that governs the fretting fatigue behavior of materials. Applied loads as well as contact geometries influence the contact stresses. The profile of an indenter and the boundary conditions provide sufficient information from which the surface tractions and the corresponding subsurface stresses have been calculated in a semi-infinite halfspace using singular integral equations. In this investigation, a numerical subroutine was developed to calculate the surface tractions and the corresponding surface and subsurface stresses of an arbitrary finite thickness infinite plate subjected to loading through a random indenter. The results from the detailed stress analysis of the contact region are required by both an initiation and fracture mechanics approach. While initiation criteria involving stress gradient fields, such as sharp notches and edges of contact in fretting fatigue, are not well established or agreed upon, stress intensity factor calculations using tools such as weight functions are more reliable. The stress intensity analysis, which is used to determine whether an initiated crack will continue to grow if it is above the threshold, depends on many variables in the stress analysis such as pad and specimen geometry, loading configuration and friction coefficient. The contact stress analysis has been used to determine equivalent stress parameters that are related to the initiation of a crack. Similarly the numerical subroutine for the contact stresses is used in conjunction with the stress intensity analysis to determine the influence of the geometry, loading configuration and friction coefficient on the stress intensity factor. Results from high-cycle fretting fatigue experiments are used to determine the threshold stress intensity factor for a given configuration. The combination of the numerical and experimental analysis is then used to develop a tool for high-cycle fretting fatigue based on a threshold approach involving a go–no go criterion. [Copyright &y& Elsevier] AB - Copyright of Tribology International is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRETTING corrosion KW - MECHANICAL wear KW - RESIDUAL stresses KW - FRICTION KW - Contact mechanics KW - Fretting fatigue KW - Thin strip N1 - Accession Number: 21830271; Bartha, B.B. 1; Email Address: bence.bartha@wpafb.af.mil Nicholas, T. 2 Farris, T.N. 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/MLLMN) Wright-Patterson AFB, Fairborn, OH 45433, USA 2: Air Force Institute of Technology, Department of Aeronautics and Astronautics (AFIT/ENY) Wright-Patterson AFB, Fairborn, OH 45433, USA 3: Purdue University, School of Aeronautics and Astronautics, West Lafayette, IN 47907, USA; Source Info: Oct2006, Vol. 39 Issue 10, p1131; Subject Term: FRETTING corrosion; Subject Term: MECHANICAL wear; Subject Term: RESIDUAL stresses; Subject Term: FRICTION; Author-Supplied Keyword: Contact mechanics; Author-Supplied Keyword: Fretting fatigue; Author-Supplied Keyword: Thin strip; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.triboint.2006.02.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21830271&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Golden, P.J. AU - Calcaterra, J.R. T1 - A fracture mechanics life prediction methodology applied to dovetail fretting JO - Tribology International JF - Tribology International Y1 - 2006/10// VL - 39 IS - 10 M3 - Article SP - 1172 EP - 1180 SN - 0301679X AB - Abstract: This work evaluates a fracture mechanics based crack growth life prediction methodology for dovetail fretting fatigue laboratory experiments. The Ti–6Al–4V specimens were configured with angles of 35°, 45° and 55°. Experiments were conducted with constant amplitude loading at R of 0.1 and 0.5 with lives ranging from 100,000 to 10 million cycles. The approach included the contact loads and bulk stress calculated from the finite element method as inputs to the stress and life analysis. Contact stresses were calculated using the contact stress analysis software CAPRI. These stresses were input into a stress intensity factor calculation at the edge of contact. Crack propagation life was calculated from an assumed initial crack size. Analysis showed that propagation consumes a majority of the total life and is insensitive to a large range of initial crack sizes. [Copyright &y& Elsevier] AB - Copyright of Tribology International is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRACTURE mechanics KW - FRETTING corrosion KW - MECHANICAL wear KW - FINITE element method KW - Dovetail KW - Fatigue crack growth KW - Fracture mechanics KW - Fretting fatigue KW - Ti–6Al–4V N1 - Accession Number: 21830276; Golden, P.J.; Email Address: patrick.golden@wpafb.af.mil Calcaterra, J.R. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, AFRL/MLLMN, Wright–Patterson AFB, OH 45433-7817, USA; Source Info: Oct2006, Vol. 39 Issue 10, p1172; Subject Term: FRACTURE mechanics; Subject Term: FRETTING corrosion; Subject Term: MECHANICAL wear; Subject Term: FINITE element method; Author-Supplied Keyword: Dovetail; Author-Supplied Keyword: Fatigue crack growth; Author-Supplied Keyword: Fracture mechanics; Author-Supplied Keyword: Fretting fatigue; Author-Supplied Keyword: Ti–6Al–4V; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.triboint.2006.02.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21830276&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hutson, Alisha AU - Sathish, Shamachary AU - Nicholas, Ted T1 - Progression of fretting fatigue damage in Ti–6Al–4V JO - Tribology International JF - Tribology International Y1 - 2006/10// VL - 39 IS - 10 M3 - Article SP - 1197 EP - 1205 SN - 0301679X AB - Abstract: An investigation was conducted to explore the nature of fretting fatigue damage in the stages prior to crack formation. In the unique experimental apparatus employed in this study, where total slip never occurs, several locations on each test specimen exist where cracks can develop due to local contact conditions. Under the test conditions used, not all of the sites had cracks upon test completion. This study evaluated the condition of non-cracked sites on several fretted specimens in an effort to identify differences between these and sites where small cracks were observed. A single test condition of 620MPa average applied static clamping stress and 250MPa applied axial fatigue stress for was selected, which corresponds to a fretting fatigue life of 107 cycles based on prior work. For specimens tested to 106 cycles, or 10% of life, several destructive and non-destructive characterization methods were chosen: scanning electron microscopy (SEM), residual stress measurement and transmission electron microscopy (TEM). Each site at which crack nucleation could be expected was inspected in the SEM and was then characterized using surface X-ray diffraction to quantify the residual stresses field near that location. Then TEM foils were cut from one area on a specimen with tiny cracks and dislocation densities were observed. A novel technique was used which permitted TEM samples to be obtained from regions in close proximity on the original specimen. Comparisons were made between as-received (AR) and stress-relief annealed (SRA) specimens, on which the stress-relief was applied prior to fretting fatigue testing. SEM inspection was useful for qualitative analysis of wear debris and identification of cracks as small as 20μm, but was unable to provide quantitative data on the level of fretting fatigue damage beyond crack size. Although differences were noted in the residual stresses for the SRA versus the AR specimens, no residual stress peaks were noted in the edge of contact regions where cracks would eventually develop. TEM observations in the vicinity of the crack nucleation region showed that the dislocation structure decayed rapidly into the specimen thickness. The cause of the dislocations was attributed to plastic deformation caused by the clamping stresses. [Copyright &y& Elsevier] AB - Copyright of Tribology International is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRETTING corrosion KW - MECHANICAL wear KW - TRANSMISSION electron microscopy KW - SCANNING electron microscopy KW - Damage characterization KW - Fretting fatigue KW - Residual stress KW - SEM KW - TEM KW - Ti–6Al–4V N1 - Accession Number: 21830279; Hutson, Alisha 1; Email Address: alisha.hutson@wpafb.af.mil Sathish, Shamachary 2 Nicholas, Ted 3; Affiliation: 1: Advanced Materials Characterization Group, Structural Integrity Division, University of Dayton Research Institute, Dayton, OH 45469-0128, USA 2: Air Force Research Laboratory, Nondestructive Evaluation Branch (AFRL/MLLP), Wright-Patterson AFB, OH 45433, USA 3: Air Force Institute of Technology, Department of Aeronautics and Astronautics (AFIT/ENY), Wright-Patterson AFB, OH 45433, USA; Source Info: Oct2006, Vol. 39 Issue 10, p1197; Subject Term: FRETTING corrosion; Subject Term: MECHANICAL wear; Subject Term: TRANSMISSION electron microscopy; Subject Term: SCANNING electron microscopy; Author-Supplied Keyword: Damage characterization; Author-Supplied Keyword: Fretting fatigue; Author-Supplied Keyword: Residual stress; Author-Supplied Keyword: SEM; Author-Supplied Keyword: TEM; Author-Supplied Keyword: Ti–6Al–4V; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.triboint.2006.02.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21830279&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pineda, Andrew C. AU - Karna, Shashi P. T1 - (Hyper)polarizabilities of isolated GaN nanoclusters JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2006/09/29/ VL - 429 IS - 1-3 M3 - Article SP - 169 EP - 173 SN - 00092614 AB - Abstract: The linear and nonlinear polarizabilities of hydrogen-terminated Ga m N n H x (m = n =1, 4, 7, 17) clusters have been calculated by the ab initio time-dependent Hartree–Fock method. The calculated linear polarizability per Ga–N unit for the Ga17N17H38 cluster shows excellent agreement with the corresponding value estimated from the measured dielectric constant of bulk GaN. The calculated (hyper)polarizabilities show a strong dependence upon the size and the geometry of the cluster. For clusters containing equal numbers of Ga and N atoms but differing in geometry, the structure with a reduced symmetry has a much larger first-order NLO coefficient than that with a higher symmetry. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLARIZABILITY (Electricity) KW - POLARIZATION (Electricity) KW - DIELECTRICS KW - EXCITON theory N1 - Accession Number: 22461013; Pineda, Andrew C. 1,2; Email Address: andrew.pineda@kirtland.af.mil Karna, Shashi P. 3; Email Address: shashi.karna@us.army.mil; Affiliation: 1: US Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Avenue, SE, Building 914, Kirtland Air Force Base, NM 87117-5776, United States 2: The Center for High Performance Computing and Department of Chemistry, The University of New Mexico, MSC01 1190, University of New Mexico, Albuquerque, NM 87131-0001, United States 3: US Army Research Laboratory, Weapons and Materials Research Directorate, ATTN: AMSRD-ARL-WM, B-4600, Aberdeen Proving Ground, MD 21005-5069, United States; Source Info: Sep2006, Vol. 429 Issue 1-3, p169; Subject Term: POLARIZABILITY (Electricity); Subject Term: POLARIZATION (Electricity); Subject Term: DIELECTRICS; Subject Term: EXCITON theory; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.cplett.2006.07.067 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22461013&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adams, W. Wade AU - Farmer, Barry L. AU - Cheng, Stephen Z.D. T1 - Ronald K. Eby JO - Polymer JF - Polymer Y1 - 2006/09/20/ VL - 47 IS - 20 M3 - Article SP - 6925 EP - 6926 SN - 00323861 N1 - Accession Number: 22394762; Adams, W. Wade 1 Farmer, Barry L. 2 Cheng, Stephen Z.D. 3; Affiliation: 1: Rice University, Richard E. Smalley Institute for Nanoscale Science and Technology, Houston, TX 77005-1892, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, 2977 Hobson Way, Wright-Patterson Air Force Base, OH 45433-7734, USA 3: Maurice Morton Institute and Department of Polymer Science, College of Polymer Science and Polymer Engineering, University of Akron, Akron, OH 44325-3909, USA; Source Info: Sep2006, Vol. 47 Issue 20, p6925; Number of Pages: 2p; Document Type: Article L3 - 10.1016/j.polymer.2006.08.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22394762&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miracle, D.B. T1 - The efficient cluster packing model – An atomic structural model for metallic glasses JO - Acta Materialia JF - Acta Materialia Y1 - 2006/09/15/ VL - 54 IS - 16 M3 - Article SP - 4317 EP - 4336 SN - 13596454 AB - Abstract: A structural model is described for metallic glasses based on a new sphere packing scheme – the efficient filling of space by solute-centered clusters. This model combines random positioning of solvent atoms with atomic order of solutes. It shows that metallic glasses contain ⩽4 topologically distinct species and that solutes possess specific sizes relative to solvent atoms to produce efficient atomic packing. Validation is achieved by quantitative predictions of nearest-neighbor partial coordination numbers, medium-range solute ordering, density and metallic glass topologies. Good agreement is achieved in each of these areas. This model is able to reproduce compositions for a broad range of metallic glasses, provides specific guidance for the exploration of new bulk metallic glasses and may give new insights into other metallic glass studies. The new scheme introduced here for the efficient filling of space in extended systems of unequal spheres may have relevance to other fields. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC glasses KW - AMORPHOUS substances KW - ALLOYS KW - ATOMS KW - TOPOLOGY KW - Atomic structure KW - Metallic glasses KW - Modeling N1 - Accession Number: 22142939; Miracle, D.B. 1; Email Address: Daniel.miracle@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, 2230 Tenth Street, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Sep2006, Vol. 54 Issue 16, p4317; Subject Term: METALLIC glasses; Subject Term: AMORPHOUS substances; Subject Term: ALLOYS; Subject Term: ATOMS; Subject Term: TOPOLOGY; Author-Supplied Keyword: Atomic structure; Author-Supplied Keyword: Metallic glasses; Author-Supplied Keyword: Modeling; Number of Pages: 20p; Document Type: Article L3 - 10.1016/j.actamat.2006.06.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22142939&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liu, Ge “Joseph” AU - Fruhberger, Bernd AU - Schuller, Ivan K. AU - Haugan, Heather J. AU - Brown, Gail J. T1 - Quantitative structural characterization of InAs/GaSb superlattices. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2006/09/15/ VL - 100 IS - 6 M3 - Article SP - 063536 PB - American Institute of Physics SN - 00218979 AB - Molecular beam epitaxy grown InAs/GaSb superlattices, containing InSb-like interfacial layers, were analyzed by a combination of x-ray diffraction (XRD) and structural refinement. The superlattice refinement from x rays (SUPREX) method determines with high accuracy the average thicknesses and d spacings of the individual InAs and GaSb layers in addition to standard structural parameters usually obtained by XRD, such as the modulation length (periodicity), average out-of-plane interplanar spacings, and total thickness. The combined SUPREX/XRD experiments show that the absence of certain odd order satellite features in the x-ray data is due to asymmetric and inhomogeneous lattice strain. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR beam epitaxy KW - X-ray diffractometer KW - CRYSTAL lattices KW - CYCLES KW - COUPLED map lattices KW - THICKNESS measurement N1 - Accession Number: 22567584; Liu, Ge “Joseph” 1; Email Address: geliu@physics-mail.ucsd.edu Fruhberger, Bernd 1 Schuller, Ivan K. 1 Haugan, Heather J. 2 Brown, Gail J. 2; Affiliation: 1: Dpartment of Physics, University of California-San Diego, La Jolla, California 92093 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7707; Source Info: 9/15/2006, Vol. 100 Issue 6, p063536; Subject Term: MOLECULAR beam epitaxy; Subject Term: X-ray diffractometer; Subject Term: CRYSTAL lattices; Subject Term: CYCLES; Subject Term: COUPLED map lattices; Subject Term: THICKNESS measurement; Number of Pages: 8p; Illustrations: 1 Black and White Photograph, 3 Diagrams, 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1063/1.2353732 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22567584&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maskaly, Karlene Rosera AU - Hsiao, Vincent K. S. AU - Cartwright, Alexander N. AU - Prasad, Paras N. AU - Lloyd, P. F. AU - Bunning, Timothy J. AU - Carter, W. Craig T1 - Experimental verification of the applicability of the homogenization approximation to rough one-dimensional photonic crystals using a holographically fabricated reflection grating. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2006/09/15/ VL - 100 IS - 6 M3 - Article SP - 066103 PB - American Institute of Physics SN - 00218979 AB - The theoretical reflectance spectrum of a one-dimensional photonic crystal with large amounts of interfacial roughness has been calculated using a previously proposed method, and compared to the actual experimental reflectivity of the structure. The photonic crystal was fabricated using a simple and fast method involving the holographic exposure of a liquid crystal/photosensitive prepolymer syrup via the self-interference patterns from two laser beams. The calculated reflectance spectrum for this structure matched the experimental one extremely well, giving very similar reflectivity peak positions and intensities. Slight discrepancies between the two reflectance spectra are attributed to either small variations in the microstructure of the reflection grating beyond that which is captured in the transmission electron micrograph, or the dispersion of the polymer which was not taken into account. These results serve as experimental verification of the theory for rough photonic crystals reported previously. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - PHOTONICS KW - LASER beams KW - HOLOGRAPHY KW - TRANSMISSION electron microscopy KW - POLYMERS KW - HOMOGENIZATION (Differential equations) N1 - Accession Number: 22567717; Maskaly, Karlene Rosera 1; Email Address: karlene@alum.mit.edu Hsiao, Vincent K. S. 2 Cartwright, Alexander N. 2; Email Address: anc@buffalo.edu Prasad, Paras N. 2 Lloyd, P. F. 3 Bunning, Timothy J. 3 Carter, W. Craig 4; Affiliation: 1: ISR-5, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 2: Institute for Lasers, Photonics and Biophotonics, University at Buffalo, The State University of New York, New York 14260 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 4: Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139; Source Info: 9/15/2006, Vol. 100 Issue 6, p066103; Subject Term: LIQUID crystals; Subject Term: PHOTONICS; Subject Term: LASER beams; Subject Term: HOLOGRAPHY; Subject Term: TRANSMISSION electron microscopy; Subject Term: POLYMERS; Subject Term: HOMOGENIZATION (Differential equations); Number of Pages: 3p; Illustrations: 1 Black and White Photograph, 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1063/1.2336346 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22567717&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bai, Zongwu AU - Durstock, Michael F. AU - Dang, Thuy D. T1 - Proton conductivity and properties of sulfonated polyarylenethioether sulfones as proton exchange membranes in fuel cells JO - Journal of Membrane Science JF - Journal of Membrane Science Y1 - 2006/09/15/ VL - 281 IS - 1/2 M3 - Article SP - 508 EP - 516 SN - 03767388 AB - Abstract: A series of high molecular weight proton exchange membrane (PEM) materials, based on sulfonated polyarylenethioether sulfone (SPTES) copolymers, has been developed utilizing an all aromatic polymer backbone with bulky organic endcaps, along with a high sulfonic acid content that enhances water retention and high temperature application. The SPTES copolymers containing up to two sulfonic acid units per polymer repeat unit are expected to maximize the membrane water uptake as well as the proton conductivity. The evaluation of these PEMs resulted in a wide variation of proton conductivities in the range of 100–215mS/cm at 65°C and 85% relative humidity; the measured proton conductivities were found to be temperature and humidity dependent. This new class of SPTES copolymer materials for PEMs has been demonstrated to be superior to the state-of-the-art Nafion membranes with respect to proton conductivity as well as high temperature PEM use. [Copyright &y& Elsevier] AB - Copyright of Journal of Membrane Science is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - DIRECT energy conversion KW - ELECTRIC batteries KW - FUEL cells KW - Fuel cells KW - Membrane electrode assembly (MEA) KW - Proton conductivity KW - Proton exchange membrane (PEM) KW - Sulfonated polyarylenethioether sulfone (SPTES) copolymer N1 - Accession Number: 21920077; Bai, Zongwu 1; Email Address: Zongwu.Bai@wpafb.af.mil Durstock, Michael F. 2 Dang, Thuy D. 2; Email Address: thuy.dang@wpafb.af.mil; Affiliation: 1: University of Dayton Research Institute, 300 College Park Drive, Dayton, OH 45469, United States 2: Polymer Branch, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, United States; Source Info: Sep2006, Vol. 281 Issue 1/2, p508; Subject Term: POLYMERS; Subject Term: DIRECT energy conversion; Subject Term: ELECTRIC batteries; Subject Term: FUEL cells; Author-Supplied Keyword: Fuel cells; Author-Supplied Keyword: Membrane electrode assembly (MEA); Author-Supplied Keyword: Proton conductivity; Author-Supplied Keyword: Proton exchange membrane (PEM); Author-Supplied Keyword: Sulfonated polyarylenethioether sulfone (SPTES) copolymer; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 335910 Battery manufacturing; NAICS/Industry Codes: 418990 All other merchant wholesalers; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.memsci.2006.04.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21920077&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bontha, Srikanth AU - Klingbeil, Nathan W. AU - Kobryn, Pamela A. AU - Fraser, Hamish L. T1 - Thermal process maps for predicting solidification microstructure in laser fabrication of thin-wall structures JO - Journal of Materials Processing Technology JF - Journal of Materials Processing Technology Y1 - 2006/09/14/ VL - 178 IS - 1-3 M3 - Article SP - 135 EP - 142 SN - 09240136 AB - Abstract: The ability to predict and control microstructure in laser-deposited materials requires an understanding of the thermal conditions at the onset of solidification. To this end, the focus of this work is the development of thermal process maps relating solidification cooling rate and thermal gradient (the key parameters controlling microstructure) to laser deposition process variables (laser power and velocity). Attention is restricted to thin-wall deposits, which are commonly manufactured using Laser Engineered Net Shaping (LENS) and other small-scale laser deposition techniques. The approach employs the 2D Rosenthal solution for a moving point heat source traversing a semi-infinite substrate, which has been previously used in the literature to guide the development of process maps for controlling melt pool size and residual stress. In the current study, cooling rates and thermal gradients at the onset of solidification are numerically extracted from the 2D Rosenthal solution throughout the depth of the melt pool, and results are plotted on dimensionless process maps for predicting solidification microstructure. Results suggest that changes in laser power and velocity can have a substantial effect on solidification cooling rate and thermal gradient, which depending on the material system could have a significant effect on the resulting microstructure. Results are further plotted on solidification maps for predicting grain morphology specifically in Ti–6Al–4V, and the effects of laser power and velocity on trends in grain morphology are discussed. Although the Rosenthal predictions neglect the nonlinear effects of temperature-dependent properties and latent heat of transformation, a comparison with 2D nonlinear thermal finite element (FEM) results suggests that they can provide reasonable estimates of trends in grain morphology. In particular, both the Rosenthal and FEM results indicate a trend from columnar toward mixed/equiaxed microstructure with increasing laser incident energy, which is in keeping with recent experimental observations of thin-wall Ti–6Al–4V deposits. [Copyright &y& Elsevier] AB - Copyright of Journal of Materials Processing Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MELTING points KW - SOLID solutions KW - MICROMECHANICS KW - CRYSTALLIZATION KW - Finite elements KW - Laser deposition KW - Rosenthal solution KW - Solidification microstructure KW - Titanium N1 - Accession Number: 21827987; Bontha, Srikanth 1 Klingbeil, Nathan W. 1; Email Address: nathan.klingbeil@wright.edu Kobryn, Pamela A. 2 Fraser, Hamish L. 3; Affiliation: 1: Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45435, USA 2: Materials and Manufacturing Directorate (AFRL/MLSC), Air Force Research Laboratory, WPAFB, OH 45433, USA 3: Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA; Source Info: Sep2006, Vol. 178 Issue 1-3, p135; Subject Term: MELTING points; Subject Term: SOLID solutions; Subject Term: MICROMECHANICS; Subject Term: CRYSTALLIZATION; Author-Supplied Keyword: Finite elements; Author-Supplied Keyword: Laser deposition; Author-Supplied Keyword: Rosenthal solution; Author-Supplied Keyword: Solidification microstructure; Author-Supplied Keyword: Titanium; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jmatprotec.2006.03.155 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21827987&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fletcher, S. T. AU - Chaplin, W. J. AU - Elsworth, Y. AU - Schou, J. AU - Buzasi, D. T1 - Frequency, splitting, linewidth and amplitude estimates of low-ℓ p modes of α Cen A: analysis of Wide-Field Infrared Explorer photometry. JO - Monthly Notices of the Royal Astronomical Society JF - Monthly Notices of the Royal Astronomical Society Y1 - 2006/09/11/ VL - 371 IS - 2 M3 - Article SP - 935 EP - 944 PB - Oxford University Press / USA SN - 00358711 AB - We present results of fitting the 50-d time series of photometry of α Cen A taken by the Wide-Field Infrared Explorer (WIRE) satellite in 1999. Both power spectrum and autocovariance function (ACF) fitting techniques were used in an attempt to determine mode frequencies, rotational splittings, lifetimes and amplitudes of low-ℓ p modes. In all, using both techniques, we managed to fit 18 modes (seven , eight and three ) with frequencies determined to within 1–2 μHz. These estimates are shown to be 0.6 ± 0.3 μHz lower, on average, than the frequencies determined from two other more recent studies, which used data gathered about 19 months after the WIRE observations. This could be indicative of an activity cycle, although due to the large uncertainty, more data would be needed to confirm this. Over a range of 1700–2650 μHz, we were also able to use the ACF fitting to determine an average lifetime of 3.9 ± 1.4 d, and an average rotational splitting of 0.54 ± 0.22 μHz, which is the first ever reliable estimate of this parameter. In contrast to the ACF, the power spectrum fitting was shown to return significantly biased results for these parameters. [ABSTRACT FROM AUTHOR] AB - Copyright of Monthly Notices of the Royal Astronomical Society is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOMETRY KW - ELECTROMAGNETIC measurements KW - RADIATION measurements KW - ARTIFICIAL satellites KW - ELECTROMAGNETIC theory KW - FREQUENCIES of oscillating systems -- Measurement KW - methods: data analysis KW - stars: oscillations N1 - Accession Number: 22164857; Fletcher, S. T. 1; Email Address: stfletch@bison.ph.bham.ac.uk Chaplin, W. J. 1 Elsworth, Y. 1 Schou, J. 2 Buzasi, D. 3; Affiliation: 1: School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT 2: Stanford University, HEPL Annex 201, Stanford, CA 94305-4085, USA 3: Department of Physics, US Air Force Academy, Colorado Springs, CO 80840, USA; Source Info: 9/11/2006, Vol. 371 Issue 2, p935; Subject Term: PHOTOMETRY; Subject Term: ELECTROMAGNETIC measurements; Subject Term: RADIATION measurements; Subject Term: ARTIFICIAL satellites; Subject Term: ELECTROMAGNETIC theory; Subject Term: FREQUENCIES of oscillating systems -- Measurement; Author-Supplied Keyword: methods: data analysis; Author-Supplied Keyword: stars: oscillations; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 10p; Illustrations: 5 Charts, 20 Graphs; Document Type: Article L3 - 10.1111/j.1365-2966.2006.10727.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22164857&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Xu, Kun AU - Josyula, Eswar T1 - Gas-kinetic scheme for rarefied flow simulation JO - Mathematics & Computers in Simulation JF - Mathematics & Computers in Simulation Y1 - 2006/09/09/ VL - 72 IS - 2-6 M3 - Article SP - 253 EP - 256 SN - 03784754 AB - Abstract: For increasingly rarefied flowfields, the predictions from continuum formulation, such as the Navier–Stokes equations lose accuracy. These inaccuracies are attributed primarily to the linear approximations of the stress and heat flux terms in the Navier–Stokes equations. The inclusion of higher order terms, such as Burnett, or high-order moment equations, could improve the predictive capabilities of such continuum formulations, but there has been limited success in the shock structure calculations, especially in the high Mach number case. Here, after reformulating the viscosity and heat conduction coefficients appropriate for the rarefied flow regime, we will show that the extended Navier–Stokes-type continuum formulation may still be properly used. The equations with generalized dissipative coefficients based on the closed solution of the Bhatnagar–Gross–Krook (BGK) model of the Boltzmann equation, are solved using the gas-kinetic numerical scheme. [Copyright &y& Elsevier] AB - Copyright of Mathematics & Computers in Simulation is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DYNAMICS KW - MATTER -- Properties KW - HEAT conduction KW - EQUATIONS KW - BGK model KW - Rarefied flow KW - Shock structure N1 - Accession Number: 22132886; Xu, Kun 1; Email Address: makxu@ust.hk Josyula, Eswar 2; Affiliation: 1: Mathematics Department, Hong Kong University of Science and Technology, Hong Kong 2: Air Force Research Laboratory, 2210 Eighth Street Wright-Patterson AFB, OH 45433, USA; Source Info: Sep2006, Vol. 72 Issue 2-6, p253; Subject Term: DYNAMICS; Subject Term: MATTER -- Properties; Subject Term: HEAT conduction; Subject Term: EQUATIONS; Author-Supplied Keyword: BGK model; Author-Supplied Keyword: Rarefied flow; Author-Supplied Keyword: Shock structure; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.matcom.2006.05.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22132886&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, U.N. AU - Cui, Y. AU - Hawrami, R. AU - Burger, A. AU - Orona, L. AU - Goldstein, J.T. T1 - AgGaSe2 : A highly photoconductive material JO - Solid State Communications JF - Solid State Communications Y1 - 2006/09/08/ VL - 139 IS - 10 M3 - Article SP - 527 EP - 530 SN - 00381098 AB - Abstract: High resistivity single crystals of AgGaSe2 were grown by the horizontal Bridgman technique. The near band edge photoconductivity of the grown crystal at room temperature was found to be up to 2×104 times higher than the dark conductivity, under the illumination of 10−3 W/cm2. The photoconductivity spectrum consists primarily of three peaks, which are attributed to the transitions from (A), (B) and (C) states of valence band to the conduction band . The crystal field splitting and the spin–orbit splitting were determined from these peak energy positions of the photoconductivity spectrum. [Copyright &y& Elsevier] AB - Copyright of Solid State Communications is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALS KW - PHOTOCONDUCTIVITY KW - SPECTRUM analysis KW - FREE electron theory of metals KW - A. Chalcopyrites KW - A. Semiconductor KW - D. Photoconductivity N1 - Accession Number: 22016339; Roy, U.N. 1; Email Address: uroy@fisk.edu Cui, Y. 1 Hawrami, R. 1 Burger, A. 1 Orona, L. 2 Goldstein, J.T. 3; Affiliation: 1: Department of Physics, Fisk University, Nashville, TN 37208-3051, United States 2: Y-12 National Security Complex, BWXT LLC, Oak Ridge, TN 37830, United States 3: Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, United States; Source Info: Sep2006, Vol. 139 Issue 10, p527; Subject Term: CRYSTALS; Subject Term: PHOTOCONDUCTIVITY; Subject Term: SPECTRUM analysis; Subject Term: FREE electron theory of metals; Author-Supplied Keyword: A. Chalcopyrites; Author-Supplied Keyword: A. Semiconductor; Author-Supplied Keyword: D. Photoconductivity; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.ssc.2006.07.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22016339&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Day, Paul N. AU - Nguyen, Kiet A. AU - Pachter, Ruth T1 - Calculation of two-photon absorption spectra of donor-π-acceptor compounds in solution using quadratic response time-dependent density functional theory. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2006/09/07/ VL - 125 IS - 9 M3 - Article SP - 094103 PB - American Institute of Physics SN - 00219606 AB - Linear and quadratic response time-dependent density functional theories have been applied to calculate the photophysical properties of donor-π-acceptor molecules which are known to have large nonlinear absorption. The linear absorption and two-photon absorption spectra predicted using hybrid functionals, including the Coulomb-attenuated model, with continuum solvation models are reported and compared to experiment and to previous theoretical predictions. While the quadratic response with these functionals overestimated the TPA cross sections relative to experiment when a Gaussian linewidth function was used, a fairly good agreement was obtained when a Lorentzian linewidth function was applied. In addition, the comparison of the TPA cross sections calculated by the sum over states with those calculated by the two-state approximation indicates the importance of the higher energy states in TPA, particularly in nondegenerate experiments. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTON beams KW - ABSORPTION spectra KW - DENSITY functionals KW - MOLECULAR spectroscopy KW - SPECTRUM analysis KW - EXCITON theory N1 - Accession Number: 22344864; Day, Paul N. 1,2; Email Address: paul.day@wpafb.af.mil Nguyen, Kiet A. 1,3 Pachter, Ruth 1; Email Address: ruth.pachter@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433. 2: Anteon Corp., Dayton, Ohio 45431. 3: UES, Inc., Dayton, Ohio 45432.; Source Info: 9/7/2006, Vol. 125 Issue 9, p094103; Subject Term: PHOTON beams; Subject Term: ABSORPTION spectra; Subject Term: DENSITY functionals; Subject Term: MOLECULAR spectroscopy; Subject Term: SPECTRUM analysis; Subject Term: EXCITON theory; Number of Pages: 13p; Illustrations: 1 Diagram, 6 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.2338031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22344864&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Sukesh AU - Kulatilaka, Waruna D. AU - Naik, Sameer V. AU - Laurendeau, Normand M. AU - Lucht, Robert P. AU - Gord, James R. T1 - Effects of quenching on electronic-resonance-enhanced coherent anti-Stokes Raman scattering of nitric oxide. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/09/04/ VL - 89 IS - 10 M3 - Article SP - 104105 PB - American Institute of Physics SN - 00036951 AB - We investigate the effects of gas-mixture composition on the electronic-resonance-enhanced coherent anti-Stokes Raman scattering (ERE-CARS) signals of nitric oxide (NO). From previous laser-induced fluorescence (LIF) studies, quenching rates are known to change drastically, by factors of 400–800, in mixtures of CO2/O2/N2. The observed ERE-CARS signal remains constant to within 30% whereas LIF signals from NO are predicted to decrease by more than two orders of magnitudes in the same environments. This is very significant for using NO ERE-CARS in high-pressure combustion environments where the electronic quenching rate can vary rapidly as a function of both space and time. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN spectroscopy KW - NITRIC oxide KW - RESONANCE Raman effect KW - COMBUSTION chambers KW - METALS -- Quenching KW - SPACE & time KW - FLUORESCENCE N1 - Accession Number: 23267517; Roy, Sukesh 1; Email Address: sroy@woh.rr.com Kulatilaka, Waruna D. 2 Naik, Sameer V. 2 Laurendeau, Normand M. 2 Lucht, Robert P. 2 Gord, James R. 3; Affiliation: 1: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, Ohio 45440 2: Department of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, Ohio 45433; Source Info: 9/4/2006, Vol. 89 Issue 10, p104105; Subject Term: RAMAN spectroscopy; Subject Term: NITRIC oxide; Subject Term: RESONANCE Raman effect; Subject Term: COMBUSTION chambers; Subject Term: METALS -- Quenching; Subject Term: SPACE & time; Subject Term: FLUORESCENCE; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 562210 Waste treatment and disposal; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; Number of Pages: 3p; Illustrations: 2 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.2338014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23267517&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Herzinger, Kurt AU - Wilson, Stephen AU - Sieben, Nándor AU - Rushall, Jeff T1 - Perfect Pairs of Ideals and Duals in Numerical Semigroups. JO - Communications in Algebra JF - Communications in Algebra Y1 - 2006/09// VL - 34 IS - 9 M3 - Article SP - 3475 EP - 3486 SN - 00927872 AB - This article considers numerical semigroups S that have a nonprincipal relative ideal I such that μ S ( I )μ S ( S - I ) = μ S ( I + ( S - I )). We show the existence of an infinite family of such pairs ( S , I ) in which I + ( S - I ) = S \{0}. We also show examples of such pairs that are not members of this family. We discuss the computational process used to find these examples and present some open questions pertaining to them. [ABSTRACT FROM AUTHOR] AB - Copyright of Communications in Algebra is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADDITIVE functions KW - IDEALS (Algebra) KW - DUALITY theory (Mathematics) KW - GENERATING functions KW - FROBENIUS algebras KW - Dual KW - Minimal generating set KW - Numerical semigroup KW - Relative ideal N1 - Accession Number: 22306879; Herzinger, Kurt 1; Email Address: kurt.herzinger@usafa.af.mil Wilson, Stephen 2 Sieben, Nándor 2 Rushall, Jeff 2; Affiliation: 1: Department of Mathematical Sciences, United States Air Force Academy, USAF Academy, Colorado, USA 2: Department of Mathematics and Statistics, Northern Arizona University, Flagstaff, Arizona, USA; Source Info: Sep2006, Vol. 34 Issue 9, p3475; Subject Term: ADDITIVE functions; Subject Term: IDEALS (Algebra); Subject Term: DUALITY theory (Mathematics); Subject Term: GENERATING functions; Subject Term: FROBENIUS algebras; Author-Supplied Keyword: Dual; Author-Supplied Keyword: Minimal generating set; Author-Supplied Keyword: Numerical semigroup; Author-Supplied Keyword: Relative ideal; Number of Pages: 12p; Document Type: Article L3 - 10.1080/00927870600794206 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22306879&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Welsh, Jeffry S. AU - Mayes, J. Steven AU - Biskner, Adam C. T1 - 2-D biaxial testing and failure predictions of IM7/977-2 carbon/epoxy quasi-isotropic laminates JO - Composite Structures JF - Composite Structures Y1 - 2006/09// VL - 75 IS - 1-4 M3 - Article SP - 60 EP - 66 SN - 02638223 AB - Abstract: In previous research, a series of a thickness-tapered cruciform specimen configurations have been used to determine the biaxial (two-dimensional, in-plane) and triaxial (three-dimensional) strength of several carbon/epoxy and glass/vinyl-ester laminate configurations. Refinements to the cruciform geometry have been shown capable of producing acceptable results for cross-ply laminate configurations. However, the presence of a biaxial strengthening effect in quasi-isotropic, [(0N/90N/±45N)M]S, laminates have brought into question whether the cruciform geometry could be used to successfully generate two-dimensional strength envelopes. In the present study, a two-dimensional failure envelope for a IM7/977-2 carbon/epoxy laminate was developed at the Air Force Research Laboratory, Space Vehicles Directorate, using a triaxial test facility. The electromechanical test frame is capable of generating any combination of tensile or compressive stresses in σ 1:σ 2:σ 3 stress space and can evaluate the uniaxial (one-dimensional, in-plane), biaxial or triaxial response of composite materials. Results are promising as they indicated that failure in the majority of the IM7/977-2 specimens occurred in the gage section. This leads the authors to believe that maximum biaxial stress states were correctly generated within the test specimen. In addition to the experimental data presented, multi-continuum theory (MCT) was used to predict and analyze the onset of damage and ultimate failure of a biaxially loaded IM7/977-2 laminate. Multi-continuum theory is a micromechanics based theory and associated numerical algorithm for extracting, virtually without a time penalty, the stress and strain fields for a composites’ constituents during a routine structural finite element analysis. Damage in a composite material typically begins at the constituent level and may, in fact, be limited to only one constituent in some situations. An accurate prediction of constituent failure at sampling points throughout the laminate provides a genesis for progressively analyzing damage propagation in a composite specimen allowing identification of intermediate damage modes. A constituent-based, quadratic, stress-interactive, failure criterion was used to take advantage of the micro-scale information provided by MCT. There was reasonable correlation between analytically and experimentally developed IM7/977-2 2D failure envelope which leads us to believe that the thickness-tapered cruciform specimen can be used to determine the biaxial strength of quasi-isotropic laminates. [Copyright &y& Elsevier] AB - Copyright of Composite Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRENGTH of materials KW - BUILDING materials KW - FLEXURE KW - CONFIGURATIONS (Geometry) KW - Biaxial testing KW - Composite failure predictions KW - Composites testing KW - Multi-axial testing N1 - Accession Number: 21495216; Welsh, Jeffry S. 1; Email Address: jeffry.welsh@kirtland.af.mil Mayes, J. Steven 2 Biskner, Adam C. 3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, NM, USA 2: Mechanical Engineering Program, Alfred University, Alfred, NY, USA 3: CSA Engineering, Inc., New Mexico Operations, Albuquerque, NM, USA; Source Info: Sep2006, Vol. 75 Issue 1-4, p60; Subject Term: STRENGTH of materials; Subject Term: BUILDING materials; Subject Term: FLEXURE; Subject Term: CONFIGURATIONS (Geometry); Author-Supplied Keyword: Biaxial testing; Author-Supplied Keyword: Composite failure predictions; Author-Supplied Keyword: Composites testing; Author-Supplied Keyword: Multi-axial testing; NAICS/Industry Codes: 416310 General-line building supplies merchant wholesalers; NAICS/Industry Codes: 416390 Other specialty-line building supplies merchant wholesalers; NAICS/Industry Codes: 423390 Other Construction Material Merchant Wholesalers; NAICS/Industry Codes: 444190 Other Building Material Dealers; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.compstruct.2006.04.049 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21495216&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Repperger, D.W. AU - Phillips, C.A. AU - Neidhard-Doll, A. AU - Reynolds, D.B. AU - Berlin, J. T1 - Actuator design using biomimicry methods and a pneumatic muscle system JO - Control Engineering Practice JF - Control Engineering Practice Y1 - 2006/09// VL - 14 IS - 9 M3 - Article SP - 999 EP - 1009 SN - 09670661 AB - Abstract: An empirical and theoretical study is conducted on a special actuator termed “pneumatic muscle” (PM) being used in a force control system framework. Such an actuator has similarities to biological systems and has many advantages (extremely high power/weight, power/volume and power/energy ratios). However, due to its inherent nonlinearities, this actuator suffers from poor position and force control. The study described here accomplishes three main goals. (1) A force control system is developed within an open and closed loop framework to emulate how biological systems work in an agonist–antagonist framework. (2) The PM used in the study has such strength that it excites the frame dynamics. This undesired dynamic response is then effectively cancelled using an impedance model control scheme. (3) The PM is demonstrated to both change length yet still produce force in a controlled manner. [Copyright &y& Elsevier] AB - Copyright of Control Engineering Practice is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYSTEMS theory KW - LINEAR systems KW - BIOLOGICAL systems KW - PNEUMATIC control KW - Biomimicry design KW - Force control KW - Pneumatic muscle actuator N1 - Accession Number: 20524571; Repperger, D.W. 1; Email Address: d.repperger@ieee.org Phillips, C.A. 2 Neidhard-Doll, A. 2 Reynolds, D.B. 2 Berlin, J. 3; Affiliation: 1: Air Force Research Laboratory, WPAFB, OH, USA 2: School of Biomedical, Human Factors and Industrial Engineering, Wright State University, Dayton, OH, USA 3: General Dynamics, Dayton, OH, USA; Source Info: Sep2006, Vol. 14 Issue 9, p999; Subject Term: SYSTEMS theory; Subject Term: LINEAR systems; Subject Term: BIOLOGICAL systems; Subject Term: PNEUMATIC control; Author-Supplied Keyword: Biomimicry design; Author-Supplied Keyword: Force control; Author-Supplied Keyword: Pneumatic muscle actuator; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.conengprac.2005.06.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20524571&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Galleani, Lorenzo AU - Cohen, Leon AU - Noga, Andrew T1 - A time-frequency approach to the adjustable bandwidth concept JO - Digital Signal Processing JF - Digital Signal Processing Y1 - 2006/09// VL - 16 IS - 5 M3 - Article SP - 454 EP - 467 SN - 10512004 AB - Abstract: The aim of the adjustable bandwidth concept (ABC) is to enhance nonstationary signals in noise by bringing out the main features so that they be effectively used in detection and classification algorithms. We show that the method transforms a time-frequency distribution by means of individual time-frequency transformations into a set of final time-frequency distributions. Each step of the procedure can be understood and formulated in terms of the kernel method. Explicit expressions are derived and examples are given. The formulation suggests further enhancements of the method. [Copyright &y& Elsevier] AB - Copyright of Digital Signal Processing is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DATA transmission systems KW - DIGITAL communications KW - BROADBAND communication systems KW - DISTRIBUTION (Probability theory) KW - Adjustable bandwidth concept KW - Detection KW - Nonstationary signals KW - Time-frequency N1 - Accession Number: 22212911; Galleani, Lorenzo 1 Cohen, Leon 1; Email Address: leon.cohen@hunter.cuny.edu Noga, Andrew 2; Affiliation: 1: City University of New York, New York, NY 10021, USA 2: Air Force Research Laboratory, 525 Brooks Road, Rome, NY 13441, USA; Source Info: Sep2006, Vol. 16 Issue 5, p454; Subject Term: DATA transmission systems; Subject Term: DIGITAL communications; Subject Term: BROADBAND communication systems; Subject Term: DISTRIBUTION (Probability theory); Author-Supplied Keyword: Adjustable bandwidth concept; Author-Supplied Keyword: Detection; Author-Supplied Keyword: Nonstationary signals; Author-Supplied Keyword: Time-frequency; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.dsp.2005.08.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22212911&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patterson, Robert AU - Winterbottom, Marc D. AU - Pierce, Byron J. T1 - Perceptual issues in the use of head-mounted visual displays. JO - Human Factors JF - Human Factors Y1 - 2006///Fall2006 VL - 48 IS - 3 M3 - journal article SP - 555 EP - 573 SN - 00187208 AB - Objective: We provide a review and analysis of much of the published literature on visual perception issues that impact the design and use of head-mounted displays (HMDs).Background: Unlike the previous literature on HMDs, this review draws heavily from the basic vision literature in order to help provide insight for future design solutions for HMDs.Method: Included in this review are articles and books found cited in other works as well as articles and books obtained from an Internet search.Results: Issues discussed include the effect of brightness and contrast on depth of field, dark focus, dark vergence, and perceptual constancy; the effect of accommodation-vergence synergy on perceptual constancy, eyestrain, and discomfort; the relationship of field of view to the functioning of different visual pathways and the types of visual-motor tasks mediated by them; the relationship of binocular input to visual suppression; and the importance of head movements, head tracking, and display update lag.Conclusion: This paper offers a set of recommendations for the design and use of HMDs.Application: Consideration of the basic vision literature will provide insight for future design solutions for HMDs. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VISUAL perception KW - HELMET-mounted displays KW - VISUAL texture recognition KW - INFORMATION display systems KW - VISUAL pathways KW - INTERNET searching N1 - Accession Number: 22746840; Patterson, Robert 1; Email Address: rpatter@rnail.wsu.edu Winterbottom, Marc D. 2 Pierce, Byron J. 2; Affiliation: 1: Washington State University, Pullman, Washington 2: Air Force Research Laboratory, Mesa, Arizona; Source Info: Fall2006, Vol. 48 Issue 3, p555; Subject Term: VISUAL perception; Subject Term: HELMET-mounted displays; Subject Term: VISUAL texture recognition; Subject Term: INFORMATION display systems; Subject Term: VISUAL pathways; Subject Term: INTERNET searching; Number of Pages: 19p; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22746840&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gans, Michael J. T1 - Channel Capacity Between Antenna Arrays Part I: Sky Noise Dominates. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2006/09// VL - 54 IS - 9 M3 - Article SP - 1586 EP - 1592 SN - 00906778 AB - Space-time coding techniques can be used to achieve very high spectral efficiencies in highly scattering environments using multiple transmit and receive antennas. At the remote station, there is usually a more limited space allotted to the antenna array than at the base station. Since the spectral efficiency improves with the number of antennas, one is interested in how many antennas can be crammed into the limited space on the remote station. This paper (Part I of II) addresses some of the issues which affect the allowable density of antennas in the remote station. In particular, the mutual impedance between antenna elements in the remote array and the correlation between the signal and noise fields received by these elements are analyzed for their impact on the channel capacity achievable by such arrays. In particular, we assume the transmitter is radiating from nT elements of uncoupled half-wave dipoles and knows nothing of the channel. A formula is given for the maximum channel capacity to a receiving array of nR elements, coupled to each other in the presence of ambient noise or interference with a uniform angle of arrival distribution. This formula neglects amplifier noise in the receivers. It is shown that the channel capacity is already determined at the terminals of the receiving array, and can not be improved by internal coupling networks following the receiving array. When the propagation is by means of full three-dimensional scattering, the channel capacity is unaffected by mutual coupling in the receiving array. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNA arrays KW - CODING theory KW - TRANSMITTING antennas KW - LINE receivers (Integrated circuits) KW - RADIO transmitter-receivers KW - CHANNELS (Structural members) KW - SPECTRUM analysis KW - CORRELATION (Statistics) KW - FLEXIBLE couplings KW - Antenna arrays KW - channel capacity KW - multiple-input multiple-output (MIMO) KW - mutual coupling KW - noise correlation N1 - Accession Number: 22487151; Gans, Michael J. 1; Email Address: gansm@rl.af.mil; Affiliation: 1: Air Force Research Laboratory, Information Directorate, Rome, NY 13441 USA; Source Info: Sep2006, Vol. 54 Issue 9, p1586; Subject Term: ANTENNA arrays; Subject Term: CODING theory; Subject Term: TRANSMITTING antennas; Subject Term: LINE receivers (Integrated circuits); Subject Term: RADIO transmitter-receivers; Subject Term: CHANNELS (Structural members); Subject Term: SPECTRUM analysis; Subject Term: CORRELATION (Statistics); Subject Term: FLEXIBLE couplings; Author-Supplied Keyword: Antenna arrays; Author-Supplied Keyword: channel capacity; Author-Supplied Keyword: multiple-input multiple-output (MIMO); Author-Supplied Keyword: mutual coupling; Author-Supplied Keyword: noise correlation; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; Number of Pages: 7p; Illustrations: 1 Black and White Photograph, 2 Graphs; Document Type: Article L3 - 10.1109/TCOMM.2006.881238 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22487151&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kannan, Rajgopal AU - Shuangqing Wei AU - Chakravarthy, Vasu AU - Seetharaman, Guna T1 - Using Misbehavior to Analyze Strategic versus Aggregate Energy Minimization in Wireless Sensor Networks. JO - International Journal of Distributed Sensor Networks JF - International Journal of Distributed Sensor Networks Y1 - 2006/09// VL - 2 IS - 3 M3 - Article SP - 225 EP - 249 SN - 15501329 AB - We present a novel formulation of the problem of energy misbehavior and develop an analytical framework for quantifying its impact on other nodes. Specifically, we formulate two versions of the power control problem for wireless sensor networks with latency constraints arising from duty cycle allocations. In the first version, strategic power optimization, nodes are modeled as rational agents in a power game, who strategically adjust their powers to minimize their own energy. In the other version, joint power optimization, sensor nodes adjust their transmission powers to minimize the aggregate energy expenditure. Our analysis of these models yields insight into the different energy outcomes of strategic versus joint power optimization. We show that while joint power optimization fits the accepted paradigm of cooperation among sensor nodes (for example large number of sensor nodes cooperating for a task such as target tracking), it comes with both advantages and disadvantages when energy misbehavior is taken into account. One advantage is that it can (sometimes) be energy-dominant, i.e., the optimal energy cost for each node under joint energy minimization is lower than its strategically optimal energy cost. We then develop a model for characterizing energy misbehavior and show that joint optimization is disadvantageous because it is impossible to prevent misbehavior under any channel quality and load constraints, whereas strategic optimization is more resilient. We prove that it is impossible for a node to unilaterally and undetectably follow a different energy optimization strategy than the other nodes and hence the only threat to the network is misbehavior through false advertisement. We then provide sufficient conditions under which misbehavior through false advertisement can be prevented under a strategic optimization regime. Our analytical results reveal optimal strategies for attacking nodes in an enemy network through energy depletion and help develop effective defense mechanisms for protecting our own wireless network against energy attacks by an intelligent adversary. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Distributed Sensor Networks is the property of Hindawi Publishing Corporation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SENSOR networks KW - DETECTORS KW - WIRELESS communication systems KW - GAME theory KW - MATHEMATICAL models KW - Energy Minimization KW - Game-Theory KW - Misbehavior KW - Sensor Networks N1 - Accession Number: 22018469; Kannan, Rajgopal 1; Email Address: rkannan@csc.lsu.edu Shuangqing Wei 2 Chakravarthy, Vasu 3 Seetharaman, Guna 4; Affiliation: 1: Department of Computer Science, Louisiana State University, Baton Rouge, LA, USA 2: Department of Electrical Engineering, Louisiana State University, Baton Rouge, LA, USA 3: Air Force Research Laboratory AFRL/SNRW, WPAFB, Dayton, OH, USA 4: Air Force Institute of Technology, Ohio; Source Info: 2006, Vol. 2 Issue 3, p225; Subject Term: SENSOR networks; Subject Term: DETECTORS; Subject Term: WIRELESS communication systems; Subject Term: GAME theory; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: Energy Minimization; Author-Supplied Keyword: Game-Theory; Author-Supplied Keyword: Misbehavior; Author-Supplied Keyword: Sensor Networks; NAICS/Industry Codes: 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 25p; Document Type: Article L3 - 10.1080/15501320600558666 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22018469&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, X. AU - Ma, N. AU - Bliss, D.F. AU - Iseler, G.W. T1 - Solute segregation during modified vertical gradient freezing of alloyed compound semiconductor crystals with magnetic and electric fields JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2006/09// VL - 49 IS - 19/20 M3 - Article SP - 3429 EP - 3438 SN - 00179310 AB - Abstract: Single crystals of gallium–aluminum–antimonide are solidified from a solution of molten gallium–antimonide and aluminum–antimonide. Electromagnetic stirring can be induced in the melt by applying a weak electric field together with a weak axial magnetic field. This paper presents a numerical model which uses a Chebyshev spectral collocation method with a second-order implicit time integration scheme with Gauss–Lobatto collocation points. This investigation models the unsteady motion and solute transport during vertical gradient freezing by submerged heater growth with electromagnetic stirring. The radial homogeneity in the crystal improves as the solute’s concentration increases. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEGREGATION (Metallurgy) KW - SEMICONDUCTORS KW - MAGNETIC fields KW - ELECTRIC fields N1 - Accession Number: 21430143; Wang, X. 1 Ma, N. 1; Email Address: nancy_ma@ncsu.edu Bliss, D.F. 2 Iseler, G.W. 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, North Carolina State University, Campus Box 7910, Raleigh, NC 27695, USA 2: US Air Force Research Laboratory, Sensors Directorate, AFRL/SNHC, 80 Scott Road, Hanscom AFB, MA 01731, USA; Source Info: Sep2006, Vol. 49 Issue 19/20, p3429; Subject Term: SEGREGATION (Metallurgy); Subject Term: SEMICONDUCTORS; Subject Term: MAGNETIC fields; Subject Term: ELECTRIC fields; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2006.03.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21430143&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Viggiano, A.A. AU - Midey, Anthony J. AU - Ehlerding, A. T1 - Kinetics of the reactions of ONOO− with small molecules JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2006/09// VL - 255-256 M3 - Article SP - 65 EP - 70 SN - 13873806 AB - Abstract: Rate constants and product distributions have been measured for a number of simple molecules reacting with ONOO− at 200 and 300K. NO, CO, H2, CH4, N2O, and H2O did not react with ONOO−. HCl and HCN underwent proton transfer in addition to other competing channels. Charge transfer from ONOO− was observed exclusively with O3 and NO2. SO2 and HCl underwent exchange for NO in ONOO−. HCN was the only substance to show substantial chemistry, producing CNO− and NO2− in addition to the proton transfer channel. Rate constants for the reactive substances were generally rapid, occurring at >10% of the collision rate constant. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUCLEAR reactions KW - COLLISIONS (Nuclear physics) KW - ION exchange (Chemistry) KW - EXCHANGE reactions KW - Branching ratios KW - D-region KW - ONOO− KW - Peroxynitrite KW - Rate constant N1 - Accession Number: 22016680; Viggiano, A.A. 1; Email Address: albert.viggiano@hanscom.af.mil Midey, Anthony J. 1 Ehlerding, A. 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA 01731, USA 2: Department of Physics, Stockholm University, AlbaNova University Center, 106 91 Stockholm, Sweden; Source Info: Sep2006, Vol. 255-256, p65; Subject Term: NUCLEAR reactions; Subject Term: COLLISIONS (Nuclear physics); Subject Term: ION exchange (Chemistry); Subject Term: EXCHANGE reactions; Author-Supplied Keyword: Branching ratios; Author-Supplied Keyword: D-region; Author-Supplied Keyword: ONOO−; Author-Supplied Keyword: Peroxynitrite; Author-Supplied Keyword: Rate constant; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.ijms.2005.12.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22016680&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Byrd, Larry W. AU - Birman, Victor T1 - Effect of temperature on stresses and delamination failure of z-pinned joints JO - International Journal of Mechanical Sciences JF - International Journal of Mechanical Sciences Y1 - 2006/09// VL - 48 IS - 9 M3 - Article SP - 938 EP - 949 SN - 00207403 AB - Abstract: Although z-pins have been shown effective in preventing delaminations in adhesively bonded and co-cured joints, their applicability depends on a reliable assessment of the strength of a z-pin-composite assembly. In particular, high residual thermal stresses that have been found in experiments dictate the necessity in a local stress analysis. Elevated temperature applied to the joint during its lifetime may also affect its effectiveness in preventing delaminations. The present paper illustrates an approach to determining local residual stresses confirming the observations regarding a possible delamination and cracking in the composite structure due to high post-processing transverse stresses. The analysis of the effect of elevated temperature applied at one of the surfaces on the response of a z-pinned joint is conducted using the concept of a double cantilever beam with an “insulated” crack. In addition, it is illustrated that an elevated temperature may actually benefit the integrity of the joint if it causes an increase in the z-pin-composite interfacial strength. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mechanical Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESIDUAL stresses KW - STRAINS & stresses (Mechanics) KW - METALS -- Heat treatment KW - HIGH temperatures KW - Composite joints KW - Fracture KW - Residual stresses KW - Temperature KW - Z-pins N1 - Accession Number: 21190326; Byrd, Larry W. 1 Birman, Victor 2; Email Address: vbirman@umr.edu; Affiliation: 1: Air Force Research Laboratory, AFRL/VASM, Bldg. 65, 2790 D Street, Wright-Patterson AFB, OH 45433, USA 2: University of Missouri-Rolla, Engineering Education Center, One University Boulevard, St. Louis, MO 63121, USA; Source Info: Sep2006, Vol. 48 Issue 9, p938; Subject Term: RESIDUAL stresses; Subject Term: STRAINS & stresses (Mechanics); Subject Term: METALS -- Heat treatment; Subject Term: HIGH temperatures; Author-Supplied Keyword: Composite joints; Author-Supplied Keyword: Fracture; Author-Supplied Keyword: Residual stresses; Author-Supplied Keyword: Temperature; Author-Supplied Keyword: Z-pins; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.ijmecsci.2006.03.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21190326&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Foster, Craig A. AU - Law, Melanie R. F. T1 - How Many Perspectives Provide a Compass? Differentiating 360-Degree and Multi-Source Feedback. JO - International Journal of Selection & Assessment JF - International Journal of Selection & Assessment Y1 - 2006/09// VL - 14 IS - 3 M3 - Article SP - 288 EP - 291 PB - Wiley-Blackwell SN - 0965075X AB - Researchers have been inconsistent regarding (a) the relationship between 360° feedback and multi-source feedback and (b) the definition of 360° feedback. In the present paper, we review these topics and offer two solutions that could facilitate effective communication about these terms. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Selection & Assessment is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FEEDBACK (Psychology) KW - 360-degree feedback (Rating of employees) KW - COMMUNICATION KW - VOCABULARY KW - RESEARCH N1 - Accession Number: 21936460; Foster, Craig A. 1; Email Address: craig.foster@usafa.af.mil Law, Melanie R. F. 1; Affiliation: 1: United States Air Force Academy; Source Info: Sep2006, Vol. 14 Issue 3, p288; Subject Term: FEEDBACK (Psychology); Subject Term: 360-degree feedback (Rating of employees); Subject Term: COMMUNICATION; Subject Term: VOCABULARY; Subject Term: RESEARCH; Number of Pages: 4p; Illustrations: 1 Diagram; Document Type: Article L3 - 10.1111/j.1468-2389.2006.00347.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21936460&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - CANFIELD, ROBERT A. AU - TOTH, RAYMOND G. AU - MELVILLE, REID T1 - VIBRATION AND TRANSONIC FLUTTER ANALYSIS FOR F-16 STORES CONFIGURATION CLEARANCE. JO - International Journal of Structural Stability & Dynamics JF - International Journal of Structural Stability & Dynamics Y1 - 2006/09// VL - 6 IS - 3 M3 - Article SP - 377 EP - 395 PB - World Scientific Publishing Company SN - 02194554 AB - This paper supports quick and accurate prediction of the flutter onset speed of an F-16 Block 40/50 configured with external stores in the transonic flight regime. Current flutter prediction methods are reviewed and hypothesized mechanisms for limit cycle oscillation (LCO) are summarized. New efforts to correlate transonic small disturbance (TSD) theory methods with flight tests are outlined. Vibration analysis and structural optimization of an F-16 finite element model were used to match ground vibration testing results. Frequency tuning was found to be critical for accurate flutter speed predictions. Sensitivity to nonlinear aerodynamic effects and store modeling was examined. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Structural Stability & Dynamics is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VIBRATION (Mechanics) KW - TRANSONIC aerodynamics KW - FLUTTER (Aerodynamics) KW - OSCILLATIONS KW - F-16 (Jet fighter plane) KW - AIRPLANES -- Flight testing KW - aerodynamic influence coefficients KW - antisymmetric vibration modes KW - dynamic instability KW - flutter KW - frequency matching KW - Limit cycle oscillation KW - model tuning KW - transonic flow N1 - Accession Number: 21811150; CANFIELD, ROBERT A. 1; Email Address: Robert.Canfield@afit.edu TOTH, RAYMOND G. 2 MELVILLE, REID 3; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology, AFIT/ENY, Bldg. 640, 2950 Hobson Way, WPAFB, OH 45433-7765, 2: USAF Test Pilot School Class 02A, Master's Student, Department of Aeronautical and Astronautical Engineering, Air Force Institute of Technology, 3: Air Force Research Laboratory, AFRL/VAAC, Bldg. 146, Room 225, 2210 Eight St., WPAFB, OH 45433,; Source Info: Sep2006, Vol. 6 Issue 3, p377; Subject Term: VIBRATION (Mechanics); Subject Term: TRANSONIC aerodynamics; Subject Term: FLUTTER (Aerodynamics); Subject Term: OSCILLATIONS; Subject Term: F-16 (Jet fighter plane); Subject Term: AIRPLANES -- Flight testing; Author-Supplied Keyword: aerodynamic influence coefficients; Author-Supplied Keyword: antisymmetric vibration modes; Author-Supplied Keyword: dynamic instability; Author-Supplied Keyword: flutter; Author-Supplied Keyword: frequency matching; Author-Supplied Keyword: Limit cycle oscillation; Author-Supplied Keyword: model tuning; Author-Supplied Keyword: transonic flow; NAICS/Industry Codes: 488190 Other Support Activities for Air Transportation; Number of Pages: 19p; Illustrations: 4 Diagrams, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21811150&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rasmussen, Cody C. AU - Canfield, Robert A. AU - Blair, Maxwell T1 - Joined-Wing Sensor-Craft Configuration Design. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2006/09//Sep/Oct2006 VL - 43 IS - 5 M3 - Article SP - 1470 EP - 1478 SN - 00218669 AB - An optimized configuration design using both structural and aerodynamic analyses of a joined-wing configuration is presented here. The joined-wing aircraft concept fulfills a proposed long-endurance surveillance mission and incorporates a load-bearing antenna structure embedded in the wing skin. A range of joined-wing configurations were trimmed for critical flight conditions and then structurally optimized for trimmed flight and gust loads to achieve a minimum weight for each single configuration. A response surface statistical analysis was then applied to determine optimized joined-wing aircraft configurations. The optimal configurations were then reanalyzed and verified by examining nonlinear structural deflection characteristics and analyzing material and aerodynamic distributions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - ANTENNAS (Electronics) KW - ATMOSPHERIC turbulence KW - LOADS (Mechanics) KW - EXPERIMENTAL design N1 - Accession Number: 23142564; Rasmussen, Cody C. 1,2 Canfield, Robert A. 1,3 Blair, Maxwell 3,4; Affiliation: 1: U.S. Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433-7765 2: Member, AIAA 3: Associate Fellow, AIAA 4: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542; Source Info: Sep/Oct2006, Vol. 43 Issue 5, p1470; Subject Term: AIRPLANE wings; Subject Term: ANTENNAS (Electronics); Subject Term: ATMOSPHERIC turbulence; Subject Term: LOADS (Mechanics); Subject Term: EXPERIMENTAL design; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; Number of Pages: 9p; Illustrations: 8 Diagrams, 6 Charts, 4 Graphs; Document Type: Article L3 - 10.2514/1.21951 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23142564&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kundu, Tribikram AU - Banerjee, Sourav AU - Jata, Kumar V. T1 - An experimental investigation of guided wave propagation in corrugated plates showing stop bands and pass bands. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2006/09// VL - 120 IS - 3 M3 - Article SP - 1217 EP - 1226 SN - 00014966 AB - Nonplanar surfaces are often encountered in engineering structures. In aerospace structures, periodically corrugated boundaries are formed by friction-stir-welding. In civil engineering structures, rebars used in reinforced concrete beams and slabs have periodic surface. Periodic structures are also being used to create desired acoustic band gaps. For health monitoring of these structures, a good understanding of the elastic wave propagation through such periodic structures is necessary. Although a number of research papers on the wave propagation in periodic structures are available in the literature, no one experimentally investigated the guided wave propagation through plates with periodic boundaries and compared the experimental results with theoretical predictions as done in this paper. The experimental results clearly show that elastic waves can propagate through the corrugated plate (waveguide) for certain frequencies called “pass bands,” and find it difficult to propagate for some other frequencies called “stop bands.” Stop bands are found to increase with the degree of corrugation. Experimental results are compared with the theoretical predictions, and good matching is observed for plates with small degree of corrugation. Only two parameters—the depth of corrugation and the wavelength of the periodicity—are sufficient for modeling the elastic wave propagation in slightly corrugated plates. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONCRETE beams -- Fatigue KW - ELASTIC waves -- Diffraction KW - ELASTIC waves -- Scattering KW - ELASTIC plates & shells KW - ACOUSTIC surface waves KW - WAVEGUIDES N1 - Accession Number: 22257470; Kundu, Tribikram 1; Email Address: tkundu@email.arizona.edu Banerjee, Sourav 1; Email Address: sourav@email.arizona.edu Jata, Kumar V. 2; Email Address: kumar.jata@wpafb.af.mil; Affiliation: 1: Department of Civil Engineering and Engineering Mechanics, University of Arizona, Tucson, Arizona 85721 2: Air Force Research Laboratory, AFRL/MLL, Wright Patterson Air Force Base, Ohio 45433; Source Info: Sep2006, Vol. 120 Issue 3, p1217; Subject Term: CONCRETE beams -- Fatigue; Subject Term: ELASTIC waves -- Diffraction; Subject Term: ELASTIC waves -- Scattering; Subject Term: ELASTIC plates & shells; Subject Term: ACOUSTIC surface waves; Subject Term: WAVEGUIDES; Number of Pages: 10p; Illustrations: 1 Black and White Photograph, 1 Diagram, 3 Charts, 8 Graphs; Document Type: Article L3 - 10.1121/1.2221534 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22257470&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lilly, T. C. AU - Gimelshein, S. F. AU - Ketsdever, A. D. AU - Markelov, G. N. T1 - Measurements and computations of mass flow and momentum flux through short tubes in rarefied gases. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2006/09// VL - 18 IS - 9 M3 - Article SP - 093601 PB - American Institute of Physics SN - 10706631 AB - Gas flows through orifices and short tubes have been extensively studied from the 1960s through the 1980s for both fundamental and practical reasons. These flows are a basic and often important element of various modern gas driven instruments. Recent advances in micro- and nanoscale technologies have paved the way for a generation of miniaturized devices in various application areas, from clinical analyses to biochemical detection to aerospace propulsion. The latter is the main area of interest of this study, where rarefied gas flow into a vacuum through short tubes with thickness-to-diameter ratios varying from 0.015 to 1.2 is investigated both experimentally and numerically with kinetic and continuum approaches. Helium and nitrogen gases are used in the range of Reynolds numbers from 0.02 to 770 (based on the tube diameter), corresponding to Knudsen numbers from 40 down to about 0.001. Propulsion properties of relatively thin and thick tubes are examined. Good agreement between experimental and numerical results is observed for mass flow rate and momentum flux, the latter being corrected for the experimental facility background pressure. For thick-to-thin tube ratios of mass flow and momentum flux versus pressure, a minimum is observed at a Knudsen number of about 0.5. A short tube propulsion efficiency is shown to be much higher than that of a thin orifice. The effect of surface specularity on a thicker tube specific impulse was found to be relatively small. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSATELLITES -- Propulsion systems KW - GAS flow KW - TUBES -- Fluid dynamics KW - CONTINUUM mechanics KW - KINETIC theory of gases N1 - Accession Number: 22567352; Lilly, T. C. 1 Gimelshein, S. F. 1 Ketsdever, A. D. 2 Markelov, G. N. 3; Affiliation: 1: University of Southern California, Los Angeles, California 90089 2: Air Force Research Laboratory, Propulsion Directorate, Edwards Air Force Base, California 93524 3: Advanced Operations and Engineering Services, 2332 KG Leiden, The Netherlands; Source Info: Sep2006, Vol. 18 Issue 9, p093601; Subject Term: NANOSATELLITES -- Propulsion systems; Subject Term: GAS flow; Subject Term: TUBES -- Fluid dynamics; Subject Term: CONTINUUM mechanics; Subject Term: KINETIC theory of gases; Number of Pages: 11p; Illustrations: 2 Charts, 12 Graphs; Document Type: Article L3 - 10.1063/1.2345681 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22567352&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boehlert, C.J. AU - Cowen, C.J. AU - Tamirisakandala, S. AU - McEldowney, D.J. AU - Miracle, D.B. T1 - In situ scanning electron microscopy observations of tensile deformation in a boron-modified Ti–6Al–4V alloy JO - Scripta Materialia JF - Scripta Materialia Y1 - 2006/09// VL - 55 IS - 5 M3 - Article SP - 465 EP - 468 SN - 13596462 AB - In situ scanning electron microscopy was performed during both room temperature and 480°C tensile deformation of a boron-modified Ti–6Al–4V alloy, in order to characterize the deformation evolution. The sequence of observable surface deformation events was: TiB whisker microcracking at stresses well below the global yield stress, multiple and extensive TiB cracking after global yielding, α+β phase slip emanating from the cracked TiB whiskers, localized shear band formation and propagation leading to cracking in the α+β phases, and ductile sample failure. TiB cracking was also observed throughout the subsurface locations on post-deformed samples. The early microcracking of TiB particles did not degrade mechanical properties, and higher tensile and ultimate strengths were obtained with a ductile fracture mode at quasi-static tensile elongations equivalent to conventional Ti–6Al–4V. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCANNING electron microscopy KW - TITANIUM alloys KW - BORON KW - METALLIC composites KW - Fracture KW - SEM KW - Tension test KW - Titanium alloys N1 - Accession Number: 21341545; Boehlert, C.J. 1; Email Address: boehlert@egr.msu.edu Cowen, C.J. 1 Tamirisakandala, S. 2 McEldowney, D.J. 3 Miracle, D.B. 4; Affiliation: 1: Department of Chemical Engineering and Materials Science, Michigan State University, 2527 Engineering Building, East Lansing, MI 48824-1226, United States 2: Department of Mechanical Engineering, Ohio University, Athens, OH 45701, United States 3: Department of Chemical and Materials Engineering, University of Dayton, Dayton, OH 45469, United States 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, United States; Source Info: Sep2006, Vol. 55 Issue 5, p465; Subject Term: SCANNING electron microscopy; Subject Term: TITANIUM alloys; Subject Term: BORON; Subject Term: METALLIC composites; Author-Supplied Keyword: Fracture; Author-Supplied Keyword: SEM; Author-Supplied Keyword: Tension test; Author-Supplied Keyword: Titanium alloys; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2006.05.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21341545&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lindsley, Ned J. AU - Pettit, Chris L. AU - Beran, Philip S. T1 - Nonlinear plate aeroelastic response with uncertain stiffness and boundary conditions. JO - Structure & Infrastructure Engineering: Maintenance, Management, Life-Cycle Design & Performance JF - Structure & Infrastructure Engineering: Maintenance, Management, Life-Cycle Design & Performance Y1 - 2006/09//Sep-Dec2006 VL - 2 IS - 3/4 M3 - Article SP - 201 EP - 220 SN - 15732479 AB - The probabilistic response of a nonlinear panel in supersonic flow is investigated using a new computational methodology. The aeroelastic system is modelled by coupling the von Karman plate equations with piston theory aerodynamics. Baseline deterministic results are compared to published data to establish validity of the aeroelastic model. Uncertainties in modulus of elasticity and boundary conditions (BCs) are considered, with their impact on panel response being quantified in terms of limit-cycle oscillation (LCO) onset pressure and panel amplitude. The panel's uncertain BCs are modelled using rotational springs in place of ideally fixed boundary conditions. The panel's uncertain elastic modulus is modelled as a second-order, spatially homogeneous, isotropic, random field. The boundary spring stiffness values are spatially constant for each random realization assuming either a uniform or Weibull distribution. Probabilistic response distributions are obtained through Monte Carlo simulation (MCS) for selected values of flowfield dynamic pressure. MCS is run for the case of random modulus only, as well as random modulus combined with either random BC distribution. It is observed that uncertainties have the greatest nonlinear influence on LCO amplitude near the deterministic point of LCO onset. Furthermore, panel response is much more sensitive to location of the modulus fields' extreme values than the correlation length used to generate the field. Novel aspects of the computational methodology include (1) the use of random fields (as opposed to a random variable) to model uncertainty in the elastic modulus, and (2) the use of proper orthogonal decomposition (POD) to yield insight into the local factors that govern the global response of the panel, permitting enhanced response prediction based on the nature of the random field realizations. [ABSTRACT FROM AUTHOR] AB - Copyright of Structure & Infrastructure Engineering: Maintenance, Management, Life-Cycle Design & Performance is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - AERODYNAMICS KW - UNCERTAINTY (Information theory) KW - INFORMATION measurement KW - RANDOM fields KW - STOCHASTIC processes KW - Aeroelastic KW - Nonlinear KW - Random fields KW - Uncertainty Quantification N1 - Accession Number: 21360706; Lindsley, Ned J. 1; Email Address: ned.lindsley@wpafb.af.mil Pettit, Chris L. 1 Beran, Philip S. 1; Affiliation: 1: Air Force Research Laboratory, AFRL/VASD Bldg. 146, 2210 8th Street, Wright-Patterson AFB, OH 45433-7531; Source Info: Sep-Dec2006, Vol. 2 Issue 3/4, p201; Subject Term: AEROELASTICITY; Subject Term: AERODYNAMICS; Subject Term: UNCERTAINTY (Information theory); Subject Term: INFORMATION measurement; Subject Term: RANDOM fields; Subject Term: STOCHASTIC processes; Author-Supplied Keyword: Aeroelastic; Author-Supplied Keyword: Nonlinear; Author-Supplied Keyword: Random fields; Author-Supplied Keyword: Uncertainty Quantification; Number of Pages: 20p; Illustrations: 1 Diagram, 2 Charts, 16 Graphs; Document Type: Article L3 - 10.1080/15732470600590564 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21360706&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Han, F. AU - Pan, E. AU - Albrecht, J.D. T1 - Strain and piezoelectric fields in embedded quantum wire arrays JO - Superlattices & Microstructures JF - Superlattices & Microstructures Y1 - 2006/09// VL - 40 IS - 3 M3 - Article SP - 125 EP - 136 SN - 07496036 AB - Abstract: Utilizing a recently developed exact closed-form solution for a single polygonal quantum wire (QWR) inclusion problem, we theoretically investigate the elastic strain and electric fields induced by QWR arrays embedded in GaAs. We consider arrays ranging from 1×1 to 7×7 QWRs embedded in infinite substrates and up to 4×7 QWRs in half space substrates where the wires are near a surface. Our results for the infinite substrate indicate that although the elastic fields within any single QWR are similar to the fields in the other wires with only a weak dependence on the number of QWRs, the electric fields (both inside and outside the QWRs) can be significantly different for different array sizes. Due to the existence of the free surface, the half space solutions show that the elastic and electric fields both inside of and outside of the QWRs depend significantly on the number of QWRs, again with the electric field having the stronger dependence. A detailed analysis of the strain and electric fields for embedded QWR arrays is presented and the results could impact the design of proposed strain-modulated electronic devices. [Copyright &y& Elsevier] AB - Copyright of Superlattices & Microstructures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOWIRES KW - NANOSTRUCTURES KW - ELECTRIC fields KW - ELECTRONIC apparatus & appliances KW - Piezoelectric nanostructures KW - Polygonal inclusion KW - Strained quantum wire N1 - Accession Number: 22212900; Han, F. 1 Pan, E. 1; Email Address: pan2@uakron.edu Albrecht, J.D. 2; Email Address: john.albrecht@wpafb.af.mil; Affiliation: 1: University of Akron, Akron, OH 44325, United States 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, United States; Source Info: Sep2006, Vol. 40 Issue 3, p125; Subject Term: NANOWIRES; Subject Term: NANOSTRUCTURES; Subject Term: ELECTRIC fields; Subject Term: ELECTRONIC apparatus & appliances; Author-Supplied Keyword: Piezoelectric nanostructures; Author-Supplied Keyword: Polygonal inclusion; Author-Supplied Keyword: Strained quantum wire; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.spmi.2006.06.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22212900&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mailloux, R. J. AU - Santarelli, S. G. AU - Roberts, T. M. T1 - Wideband arrays using irregular (polyomino) shaped subarrays. JO - Electronics Letters JF - Electronics Letters Y1 - 2006/08/31/ VL - 42 IS - 18 M3 - Article SP - 1019 EP - 1020 PB - Institution of Engineering & Technology SN - 00135194 AB - Irregular polyomino-shaped subarrays are shown to provide a practical and effective means for introducing time delay into an array with phase steering. The elimination of quantisation lobes, with resulting peak sidelobes suppressed more than 14 dB below the quantisation lobes of an array of rectangular subarrays, is demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BROADBAND communication systems KW - ANTENNA arrays KW - TIME delay systems KW - POLYOMINOES KW - ANTENNA radiation patterns KW - COMBINATORIAL designs & configurations N1 - Accession Number: 22205420; Mailloux, R. J. 1 Santarelli, S. G. 2; Email Address: scott.santorelli@hanscom.af.mil Roberts, T. M. 2; Affiliation: 1: Department of Electrical and Computer Engineering, University of Massachusetts, Amherst, MA, USA 2: Air Force Research Laboratory, Sensors Directorate, USA; Source Info: 8/31/2006, Vol. 42 Issue 18, p1019; Subject Term: BROADBAND communication systems; Subject Term: ANTENNA arrays; Subject Term: TIME delay systems; Subject Term: POLYOMINOES; Subject Term: ANTENNA radiation patterns; Subject Term: COMBINATORIAL designs & configurations; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; Number of Pages: 2p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1049/el:20062252 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22205420&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Khramov, A.N. AU - Balbyshev, V.N. AU - Kasten, L.S. AU - Mantz, R.A. T1 - Sol–gel coatings with phosphonate functionalities for surface modification of magnesium alloys JO - Thin Solid Films JF - Thin Solid Films Y1 - 2006/08/30/ VL - 514 IS - 1/2 M3 - Article SP - 174 EP - 181 SN - 00406090 AB - Abstract: Hybrid organic–inorganic coatings with phosphonate functionalities have been synthesized and evaluated as prospective surface treatments for magnesium materials. These coatings have been processed via a sol–gel route by hydrolysis and condensation of a mixture of diethylphosphonatoethyltriethoxy-silane and tetraethoxy-silane with variable molar ratios. The coatings morphology and the surface chemistry at the coating/substrate interface have been characterized using scanning electron microscopy, X-ray photoelectron spectroscopy, 31P nuclear magnetic resonance spectroscopy, and time-of-flight secondary ion mass spectrometry. The corrosion protection performance of the coatings deposited on magnesium alloy AZ31B has been examined by a group of electrochemical techniques including potentiodynamic polarization and electrochemical impedance spectroscopy. In addition, a scanning Kelvin probe technique has been used to investigate interfacial properties of the coatings. The improved corrosion protection of phosphonate-containing coatings as compared to pure silica sol–gel coatings has been observed and explained by the favorable combination of barrier properties of the organo-silicate matrix with strong chemical bonding of phosphonate groups to the magnesium substrate. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COATING processes KW - MAGNESIUM alloys KW - ELECTRON microscopy KW - METALLIC composites KW - Conversion surface treatment KW - Corrosion KW - Magnesium alloy AZ31B KW - Phosphonate KW - Silane KW - Sol-gel coatings N1 - Accession Number: 21493133; Khramov, A.N. 1; Email Address: alexander.khramov@wpafb.af.mil Balbyshev, V.N. 1 Kasten, L.S. 2 Mantz, R.A. 3; Affiliation: 1: Universal Technology Corp., 1270 N. Fairfield Rd., Dayton, OH 45432-2600, USA 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0168, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Nonmetallic Materials Division, Nonstructural Materials Branch, Coatings Research Group, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Aug2006, Vol. 514 Issue 1/2, p174; Subject Term: COATING processes; Subject Term: MAGNESIUM alloys; Subject Term: ELECTRON microscopy; Subject Term: METALLIC composites; Author-Supplied Keyword: Conversion surface treatment; Author-Supplied Keyword: Corrosion; Author-Supplied Keyword: Magnesium alloy AZ31B; Author-Supplied Keyword: Phosphonate; Author-Supplied Keyword: Silane; Author-Supplied Keyword: Sol-gel coatings; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.tsf.2006.02.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21493133&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chun, Y.B. AU - Semiatin, S.L. AU - Hwang, S.K. T1 - Monte Carlo modeling of microstructure evolution during the static recrystallization of cold-rolled, commercial-purity titanium JO - Acta Materialia JF - Acta Materialia Y1 - 2006/08/15/ VL - 54 IS - 14 M3 - Article SP - 3673 EP - 3689 SN - 13596454 AB - Abstract: The static recrystallization behavior of cold-rolled, commercial-purity titanium (CP-Ti) was studied experimentally and with Monte Carlo (MC) modeling. Utilization of electron backscatter diffraction orientation imaging microscopy as input for MC simulations resulted in realistic predictions of recrystallization kinetics, microstructure, and texture, which were in good agreement with experimental results. MC simulations of recrystallization kinetics indicated that non-uniform deformation, heterogeneous nucleation of recrystallization, and concurrent recovery either individually or in combination can cause a deviation from linear JMAK kinetics. Model results also revealed that heterogeneous nucleation of recrystallized grains and their early impingement in local areas of high deformation result in a log-normal distribution of grain size. An orientation-dependent stored energy distribution and preferred nucleation at high-stored-energy regions were found to be closely related to the development of recrystallization texture in cold-rolled CP-Ti, thus providing support for the ‘oriented nucleation’ mechanism. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RECRYSTALLIZATION (Metallurgy) KW - TITANIUM KW - MONTE Carlo method KW - ELECTRONS -- Backscattering KW - NUCLEATION KW - Electron backscatter diffraction KW - Monte Carlo techniques KW - Recrystallization KW - Texture KW - Titanium N1 - Accession Number: 21752796; Chun, Y.B. 1 Semiatin, S.L. 2 Hwang, S.K. 1; Email Address: skhwang2@inha.ac.kr; Affiliation: 1: Inha University, School of Materials Science and Engineering, 253 Yonghyun-Dong, Nam-Gu, Incheon 402-751, South Korea 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Aug2006, Vol. 54 Issue 14, p3673; Subject Term: RECRYSTALLIZATION (Metallurgy); Subject Term: TITANIUM; Subject Term: MONTE Carlo method; Subject Term: ELECTRONS -- Backscattering; Subject Term: NUCLEATION; Author-Supplied Keyword: Electron backscatter diffraction; Author-Supplied Keyword: Monte Carlo techniques; Author-Supplied Keyword: Recrystallization; Author-Supplied Keyword: Texture; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.actamat.2006.03.055 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21752796&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CASE AU - Siefert, Nicholas S. AU - Ganguly, Biswa N. AU - Sands, Brian L. AU - Hebner, Greg A. T1 - Decay of the electron number density in the nitrogen afterglow using a hairpin resonator probe. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2006/08/15/ VL - 100 IS - 4 M3 - Case Study SP - 043303 PB - American Institute of Physics SN - 00218979 AB - A hairpin resonator was used to measure the electron number density in the afterglow of a nitrogen glow discharge (p=0.25–0.75 Torr). Electron number densities were measured using a time-dependent approach similar to the approach used by Spencer et al. [J. Phys. D 20, 923 (1987)]. The decay time of the electron number density was used to determine the electron temperature in the afterglow, assuming a loss of electrons via ambipolar diffusion to the walls. The electron temperature in the near afterglow remained between 0.4 and 0.6 eV, depending on pressure. This confirms the work by Guerra et al. [IEEE Trans. Plasma. Sci. 31, 542 (2003)], who demonstrated experimentally and numerically that the electron temperature stays significantly above room temperature via superelastic collisions with highly vibrationally excited ground state molecules and metastables, such as A 3Σu+. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER cavity resonators KW - PLASMA (Ionized gases) KW - PLASMA sheaths KW - PLASMA density KW - ELECTRON distribution N1 - Accession Number: 22257299; Siefert, Nicholas S. 1; Email Address: nicholas.siefert@gmail.com Ganguly, Biswa N. 1 Sands, Brian L. 2 Hebner, Greg A. 3; Affiliation: 1: Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433 2: UES Inc., Wright Patterson, Ohio 45433 3: Sandia National Laboratories, Albuquerque, New Mexico 87185; Source Info: 8/15/2006, Vol. 100 Issue 4, p043303; Subject Term: LASER cavity resonators; Subject Term: PLASMA (Ionized gases); Subject Term: PLASMA sheaths; Subject Term: PLASMA density; Subject Term: ELECTRON distribution; Number of Pages: 5p; Illustrations: 2 Diagrams, 1 Chart, 4 Graphs; Document Type: Case Study L3 - 10.1063/1.2234555 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22257299&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mitchel, W. C. AU - Mitchell, W. D. AU - Fang, Z. Q. AU - Look, D. C. AU - Smith, S. R. AU - Smith, H. E. AU - Khlebnikov, Igor AU - Khlebnikov, Y. I. AU - Basceri, C. AU - Balkas, C. T1 - Electrical properties of unintentionally doped semi-insulating and conducting 6H-SiC. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2006/08/15/ VL - 100 IS - 4 M3 - Article SP - 043706 PB - American Institute of Physics SN - 00218979 AB - Temperature dependent Hall effect (TDH), low temperature photoluminescence (LTPL), secondary ion mass spectrometry (SIMS), optical admittance spectroscopy (OAS), and thermally stimulated current (TSC) measurements have been made on 6H-SiC grown by the physical vapor transport technique without intentional doping. n- and p-type as well semi-insulating samples were studied to explore the compensation mechanism in semi-insulating high purity SiC. Nitrogen and boron were found from TDH and SIMS measurements to be the dominant impurities that must be compensated to produce semi-insulating properties. The electrical activation energy of the semi-insulating sample determined from the dependence of the resistivity was 1.0 eV. LTPL lines near 1.00 and 1.34 eV, identified with the defects designated as UD-1 and UD-3, were observed in all three samples but the intensity of the UD-1 line was almost a factor of 10 more in the n-type sample than in the the p-type sample with that in the semi-insulating sample being intermediate between those two. OAS and TSC experiments confirmed the high purity of this material. The results suggest that the relative concentrations of a dominant deep level and nitrogen and boron impurities can explain the electrical properties in this material. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DOPED semiconductors KW - ELECTRIC insulators & insulation -- Thin films KW - QUANTUM Hall effect KW - PHOTOLUMINESCENCE KW - SECONDARY ion mass spectrometry N1 - Accession Number: 22257346; Mitchel, W. C. 1 Mitchell, W. D. 1; Email Address: william.mitchel@wpafb.af.mil Fang, Z. Q. 2 Look, D. C. 2 Smith, S. R. 3 Smith, H. E. 3 Khlebnikov, Igor 4 Khlebnikov, Y. I. 4 Basceri, C. 4 Balkas, C. 4; Affiliation: 1: Air Force Research Laboratory, AFRL/MLPS, Wright Patterson Air Force Base (AFB), 3005 Hobson Way, Ohio 45433-7707 2: Semiconductor Research Center, Wright State University, Dayton, Ohio 45435 3: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469 4: INTRINSIC Semiconductor Corp., 22660 Executive Drive, Suite 101, Dulles, Virginia 20166; Source Info: 8/15/2006, Vol. 100 Issue 4, p043706; Subject Term: DOPED semiconductors; Subject Term: ELECTRIC insulators & insulation -- Thin films; Subject Term: QUANTUM Hall effect; Subject Term: PHOTOLUMINESCENCE; Subject Term: SECONDARY ion mass spectrometry; Number of Pages: 5p; Illustrations: 2 Charts, 7 Graphs; Document Type: Article L3 - 10.1063/1.2227622 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22257346&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiang, X.P. AU - Wang, X.Y. AU - Li, J.X. AU - Li, D.Y. AU - Man, C.-S. AU - Shepard, M.J. AU - Zhai, T. T1 - Enhancement of fatigue and corrosion properties of pure Ti by sandblasting JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2006/08/15/ VL - 429 IS - 1/2 M3 - Article SP - 30 EP - 35 SN - 09215093 AB - Abstract: Commercially pure titanium was sandblasted with SiO2 particles of 200–300μm in diameter. It was found that the sandblasted samples exhibited an increase in fatigue strength by 11% over that of the untreated samples. The peak subsurface compressive residual stress produced by sandblasting was measured by XRD to be around 480MPa. Three distinct regions were observed in the sandblasted samples, namely the severely deformed surface layer, the region deformed mainly by twinning, and the substrate. After recovery treatment below 300°C, the surface layer of the sandblasted samples was transformed into a nano-crystalline structure, and its corrosion resistance was significantly improved. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESIDUAL stresses KW - STRAINS & stresses (Mechanics) KW - STRENGTH of materials KW - TITANIUM KW - Nano-surface layer KW - Residual stress KW - Sandblasting KW - Surface enhancement N1 - Accession Number: 21665546; Jiang, X.P. 1 Wang, X.Y. 2 Li, J.X. 1 Li, D.Y. 2 Man, C.-S. 3 Shepard, M.J. 4 Zhai, T. 1; Email Address: tzhai@engr.uky.edu; Affiliation: 1: Department of Chemical and Materials Engineering, University of Kentucky, 177 Anderson Hall, Lexington, KY 40506, USA 2: Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alta., Canada T6G 2G6 3: Department of Mathematics, University of Kentucky, 757 Patterson Office Tower, Lexington, KY 40506, USA 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH 45433-7817, USA; Source Info: Aug2006, Vol. 429 Issue 1/2, p30; Subject Term: RESIDUAL stresses; Subject Term: STRAINS & stresses (Mechanics); Subject Term: STRENGTH of materials; Subject Term: TITANIUM; Author-Supplied Keyword: Nano-surface layer; Author-Supplied Keyword: Residual stress; Author-Supplied Keyword: Sandblasting; Author-Supplied Keyword: Surface enhancement; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.msea.2006.04.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21665546&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jauchem, James R. AU - Sherry, Clifford J. AU - Fines, David A. AU - Cook, Michael C. T1 - Acidosis, lactate, electrolytes, muscle enzymes, and other factors in the blood of Sus scrofa following repeated TASER® exposures JO - Forensic Science International JF - Forensic Science International Y1 - 2006/08/10/ VL - 161 IS - 1 M3 - Article SP - 20 EP - 30 SN - 03790738 AB - Abstract: Repeated exposure to electro-muscular incapacitating devices could result in repetitive, sustained muscle contraction, with little or no muscle recovery period. Therefore, rhabdomyolysis and other physiological responses, including acidosis, hyperkalaemia, and altered levels of muscle enzymes in the blood, would be likely to occur. Experiments were performed to investigate effects of repeated exposures of TASER® International''s Advanced TASER® X26 on muscle contraction and resultant changes in blood factors in an anaesthetized swine model. A total of 10 animals were used. Six swine were exposed for 5s, followed by a 5-s period of no exposure, repeatedly for 3min. (In five of the animals, after a 1-h delay, a second 3-min exposure period was added.) The remaining four animals were used for an additional pilot study. All four limbs of each animal exhibited contraction even though the electrodes were positioned in areas at some distances from the limbs. The degree of muscle contraction generated during the second exposure period was significantly lower than that in the first exposure series. This finding was consistent with previous studies showing that prolonged activity in skeletal muscle will eventually result in a decline of force production. There were some similarities in blood sample changes in the current experiments with previous studies of muscular exercise. Thus problems concerning biological effects of repeated TASER exposures may be related, not directly to the “electric output” per se, but rather to the resulting contraction of muscles (and related interruption of respiration) and subsequent sequelae. Transient increases in hematocrit, potassium, and sodium were consistent with previous reports in the literature dealing with studies of muscle stimulation or exercise. It is doubtful that these short-term elevations would have any serious health consequences in a healthy individual. Blood pH was significantly decreased for 1h following exposure, but subsequently returned toward a normal level. Leg muscle contractions and decreases in respiration each appeared to contribute to the acidosis. Lactate was highly elevated, with a slow return (time course greater than 1h) to baseline. Other investigators have reported profound metabolic acidosis during restraint-associated cardiac arrest. Since restraint often occurs immediately after TASER exposure, this issue should be considered in further development of deployment concepts. On the basis of the results of the current studies, the repeated use of electro-muscular incapacitating devices in a short period of time is, at least, feasible, with the caveat that some medical monitoring of subjects may be required (to observe factors such as lactate and acidosis). [Copyright &y& Elsevier] AB - Copyright of Forensic Science International is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXAMINATION of the blood KW - MUSCLE contraction KW - RHABDOMYOLYSIS KW - HYDROGEN-ion concentration KW - Acidosis KW - Blood KW - Electric injuries KW - Electronic weapons KW - Muscle KW - TASER N1 - Accession Number: 21740424; Jauchem, James R. 1; Email Address: james.jauchem@brooks.af.mil Sherry, Clifford J. 2 Fines, David A. 2 Cook, Michael C. 2; Affiliation: 1: Air Force Research Laboratory, Human Effectiveness Directorate, Directed Energy Bioeffects Division, 8262 Hawks Road, Brooks City-Base, Texas 78235, USA 2: Advanced Information Engineering Services, A General Dynamics Company, 3276 Reliance Loop, Brooks City-Base, Texas 78235, USA; Source Info: Aug2006, Vol. 161 Issue 1, p20; Subject Term: EXAMINATION of the blood; Subject Term: MUSCLE contraction; Subject Term: RHABDOMYOLYSIS; Subject Term: HYDROGEN-ion concentration; Author-Supplied Keyword: Acidosis; Author-Supplied Keyword: Blood; Author-Supplied Keyword: Electric injuries; Author-Supplied Keyword: Electronic weapons; Author-Supplied Keyword: Muscle; Author-Supplied Keyword: TASER; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.forsciint.2005.10.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21740424&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Spottswood, S.M. AU - Allemang, R.J. T1 - Identification of nonlinear parameters for reduced order models JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2006/08/08/ VL - 295 IS - 1/2 M3 - Article SP - 226 EP - 245 SN - 0022460X AB - Abstract: Constructing nonlinear structural dynamic models is a goal for numerous research and development organizations. Such a predictive capability is required in the development of advanced, high-performance aircraft structures. Specifically, the ability to predict the response of complex structures to engine induced and aero acoustic loading has long been a United States Air Force (USAF) goal. Sonic fatigue has plagued the USAF since the advent and adoption of the turbine engine. While the problem has historically been a maintenance one, predicting the dynamic response is crucial for future aerospace vehicles. Decades have been spent investigating the dynamic response and untimely failure of aircraft structures, yet little work has been accomplished towards developing practical nonlinear prediction methods. Further, the last decade has witnessed an appreciable amount of work in the area of nonlinear parameter identification. This paper outlines a unique and important extension of a recently introduced nonlinear identification method: Nonlinear Identification through Feedback of the Outputs (NIFO). The novel extension allows for a ready means of identifying nonlinear parameters in reduced order space using experimental data. The nonlinear parameters are then used in the assembly of reduced order models, thus providing researchers with a means of conducting predictive studies prior to expensive and questionable experimental efforts. This paper details both an analytical and experimental study conducted on a well-characterized clamped–clamped beam subjected to broadband random loading. Amplitude dependent, constant stiffness parameters were successfully identified for a multiple-degree-of-freedom (MDOF) nonlinear reduced order model. The nonlinear coefficients identified from the analytical scenario compare well with previously published studies of the beam. Nonlinear parameters were also successfully identified from the raw experimental data. Finally, a MDOF nonlinear reduced order model, constructed from experimental data, was used to predict the experimental response of the beam to other loading conditions. Beam response spectra and average displacement values from the prediction model also compare well with the experimental results. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRFRAMES KW - NONLINEAR models (Statistics) KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 20901248; Spottswood, S.M. 1; Email Address: stephen.spottswood@wpafb.af.mil Allemang, R.J. 2; Affiliation: 1: Air Force Research Laboratory, 2790 D Street, Wright-Patterson AFB, OH 45433-7402, USA 2: Department of Mechanical, Industrial, Nuclear Engineering, Structural Dynamics Research Laboratory, University of Cincinnati, Cincinnati, OH, 45221, USA; Source Info: Aug2006, Vol. 295 Issue 1/2, p226; Subject Term: AIRFRAMES; Subject Term: NONLINEAR models (Statistics); Subject Term: UNITED States; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 20p; Document Type: Article L3 - 10.1016/j.jsv.2006.01.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20901248&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yong Chang AU - Grein, Christoph H. AU - Sivananthan, Sivalingam AU - Flatte, M. E. AU - Nathan, V. AU - Guha, S. T1 - Narrow gap HgCdTe absorption behavior near the band edge including nonparabolicity and the Urbach tail. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/08/07/ VL - 89 IS - 6 M3 - Article SP - 062109 PB - American Institute of Physics SN - 00036951 AB - An analytical model describing the absorption behavior of HgCdTe is developed that simultaneously considers the contributions from nonparabolic conduction and light hole bands as calculated by a 14×14 matrix k·p method as well as the Urbach tail. This model is capable of smoothly fitting experimental absorption coefficient curves over energies ranging from the Urbach tail region to the intrinsic absorption region up to 300 meV above the band gap. Comparisons to the experimental results give good agreement. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MERCURY compounds KW - ABSORPTION KW - ENERGY gaps (Physics) KW - ENERGY-band theory of solids KW - PHYSICS N1 - Accession Number: 22030396; Yong Chang 1; Email Address: yonchang@uic.edu Grein, Christoph H. 1 Sivananthan, Sivalingam 1 Flatte, M. E. 2 Nathan, V. 3 Guha, S. 4; Affiliation: 1: Department of Physics (MC273), University of Illinois at Chicago, Chicago, Illinois 60607 2: Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa 52242 3: Air Force Research Laboratory, 3550 Aberdeen Ave. SE, Kirtland AFB, New Mexico 87117 4: Air Force Research Laboratories, Wright Patterson AFB, Ohio 45433; Source Info: 8/7/2006, Vol. 89 Issue 6, p062109; Subject Term: MERCURY compounds; Subject Term: ABSORPTION; Subject Term: ENERGY gaps (Physics); Subject Term: ENERGY-band theory of solids; Subject Term: PHYSICS; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 3p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.2245220 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22030396&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Millman, Daniel R. AU - King, Paul I. AU - Maple, Raymond C. AU - Beran, Philip S. AU - Chilton, Lawrence K. T1 - Uncertainty Quantification with a B-Spline Stochastic Projection. JO - AIAA Journal JF - AIAA Journal Y1 - 2006/08// VL - 44 IS - 8 M3 - Article SP - 1845 EP - 1853 SN - 00011452 AB - Presented is a new stochastic algorithm for computing the probability density functions and estimating bifurcations of nonlinear equations of motion whose system parameters are characterized by a Gaussian distribution. Polynomial and Fourier chaos expansions, which are spectral methods, have been used successfully to propagate parametric uncertainties in nonlinear systems. However, it is shown that bifurcations in the time domain are manifested as discontinuities in the stochastic domain, which are problematic for solution with these spectral approaches. Because of this, a new algorithm is introduced based on the stochastic projection method but employing a multivariate B spline. Samples are obtained by choosing nodes on the stochastic axes. These samples are used to build an interpolating function in the stochastic domain. Monte Carlo simulations are then very efficiently performed on this interpolating function to estimate probability density functions of a response. The results from this nonintrusive and non-Galerkin approach are in excellent agreement with Monte Carlo simulations of the governing equations, but at a computational cost 2 orders of magnitude less than a traditional Monte Carlo approach. The probability density functions obtained from the stochastic algorithm provide a rapid estimate of the probability of failure for a nonlinear pitch and plunge airfoil. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STOCHASTIC processes KW - ALGORITHMS KW - GAUSSIAN distribution KW - BIFURCATION theory KW - MONTE Carlo method N1 - Accession Number: 21997458; Millman, Daniel R. 1,2 King, Paul I. 3 Maple, Raymond C. 3 Beran, Philip S. 4,5 Chilton, Lawrence K. 6; Affiliation: 1: U.S. Air Force Flight Test Center, U.S. Air Force Test Pilot School, Edwards Air Force Base, California 93524 2: Adjunct Assistant Professor, U.S. Air Force Institute of Technology 3: U.S. Air Force Institute of Technology, Wright Patterson Air Force Base, Ohio 45433 4: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 5: Senior Research Aerospace Engineer, AFRL/VASD 6: Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Aug2006, Vol. 44 Issue 8, p1845; Subject Term: STOCHASTIC processes; Subject Term: ALGORITHMS; Subject Term: GAUSSIAN distribution; Subject Term: BIFURCATION theory; Subject Term: MONTE Carlo method; Number of Pages: 9p; Illustrations: 1 Diagram, 2 Charts, 12 Graphs; Document Type: Article L3 - 10.2514/1.11468 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21997458&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McAdams, Ryan M. AU - Mustafa, Shamimunisa B. AU - Shenberger, Jeffrey S. AU - Dixon, Patricia S. AU - Henson, Barbara M. AU - DiGeronimo, Robert J. T1 - Cyclic stretch attenuates effects of hyperoxia on cell proliferation and viability in human alveolar epithelial cells. JO - American Journal of Physiology: Lung Cellular & Molecular Physiology JF - American Journal of Physiology: Lung Cellular & Molecular Physiology Y1 - 2006/08// VL - 35 IS - 2 M3 - Article SP - L166 EP - L174 SN - 10400605 AB - The treatment of severe lung disease often requires the use of high concentrations of oxygen coupled with the need for assisted ventilation, potentially exposing the pulmonary epithelium to both reactive oxygen species and nonphysiological cyclic stretch. Whereas prolonged hyperoxia is known to cause increased cell injury, cyclic stretch may result in either cell proliferation or injury depending on the pattern and degree of exposure to mechanical deformation. How hyperoxia and cyclic stretch interact to affect the pulmonary epithelium in vitro has not been previously investigated. This study was performed using human alveolar epithelial A549 cells to explore the combined effects of cyclic stretch and hyperoxia on cell proliferation and viability. Under room air conditions, cyclic stretch did not alter cell viability at any time point and increased cell number after 48 h compared with unstretched controls. After exposure to prolonged hyperoxia, cell number and [³H]thymidine incorporation markedly decreased, whereas evidence of oxidative stress and nonapoptotic cell death increased. The combination of cyclic stretch with hyperoxia significantly mitigated the negative effects of prolonged hyperoxia alone on measures of cell proliferation and viability. In addition, cyclic stretch resulted in decreased levels of oxidative stress over time in hyperoxia-exposed cells. Our results suggest that cyclic stretch, as applied in this study, can minimize the detrimental effects of hyperoxia on alveolar epithelial A549 cells. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Physiology: Lung Cellular & Molecular Physiology is the property of American Physiological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LUNG diseases KW - ACTIVE oxygen KW - CELL proliferation KW - CELL death KW - EPITHELIUM KW - THYMIDINE KW - cell death KW - pulmonary epithelial cells N1 - Accession Number: 21787616; McAdams, Ryan M. 1 Mustafa, Shamimunisa B. 2 Shenberger, Jeffrey S. 3 Dixon, Patricia S. 1 Henson, Barbara M. 2 DiGeronimo, Robert J. 1; Email Address: Robert.DiGeronimo@lackland.af.mil; Affiliation: 1: Department of Pediatrics, Wilford Hall United States Air Force Medical Center, Lackland Air Force Base 2: Department of Pediatrics, University of Texas Health Science Center, San Antonio, Texas 3: Department of Pediatrics, Dartmouth Medical School, Hanover, New Hampshire; Source Info: Aug2006, Vol. 35 Issue 2, pL166; Subject Term: LUNG diseases; Subject Term: ACTIVE oxygen; Subject Term: CELL proliferation; Subject Term: CELL death; Subject Term: EPITHELIUM; Subject Term: THYMIDINE; Author-Supplied Keyword: cell death; Author-Supplied Keyword: pulmonary epithelial cells; Number of Pages: 9p; Illustrations: 1 Color Photograph, 7 Graphs; Document Type: Article L3 - 10.1152/ajplung.00160.2005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21787616&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maturo, Stephen C. AU - Mair, Eric A. T1 - Submucosal Minimally Invasive Lingual Excision: An Effective, Novel Surgery for Pediatric Tongue Base Reduction. JO - Annals of Otology, Rhinology & Laryngology JF - Annals of Otology, Rhinology & Laryngology Y1 - 2006/08// VL - 115 IS - 8 M3 - Article SP - 624 EP - 630 SN - 00034894 AB - Objectives: The aim of this study was to develop an effective single intraoral, minimally invasive technique to reduce the enlarged tongue base in children with obstructive macroglossia. Methods: We present the anatomic dissection of fresh cadavers and a representative case series of children who underwent submucosal minimally invasive lingual excision (SMILE) with a plasma-mediated radiofrequency device (coblation) under intraoral ultrasonic and endoscopic guidance. Multiple anatomic dissections determined the relative location of the hypoglossal nerve and lingual neurovascular bundle in relation to removable tongue base musculature. A pediatric case series demonstrates the straightforward SMILE technique. Results: Laboratory anatomic dissection and clinical lingual ultrasonography revealed the surgical safety borders for SMILE. The surgical safety and efficacy of SMILE is demonstrated by preoperative and postoperative clinical examinations and polysomnograms in children with obstructive macroglossia (such as Beckwith-Wiedemann and Down syndromes and tongue vascular malformation). Coblation submucosally removes excessive tongue base tissue through a small anterior tongue incision. SMILE was performed without excessive pain, bleeding, edema, infection, or tongue dysfunction. Conclusions: SMILE is an effective novel operation that incorporates coblation with ultrasonography and endoscopic guidance for children who need tongue base reduction. Anatomic dissection and clinical cases demonstrate the potential for aggressive yet relatively safe tissue removal by this minimally invasive technique. SMILE also has significant potential for adults with obstructive sleep apnea due to a large tongue base. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of Otology, Rhinology & Laryngology is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXCISION (Surgery) KW - OPERATIVE surgery KW - SURGERY KW - TONGUE KW - ORAL surgery KW - macroglossia KW - submucosal minimally invasive lingual excision KW - tongue base reduction N1 - Accession Number: 22005714; Maturo, Stephen C. 1 Mair, Eric A. 1; Email Address: emair@ceenta.com; Affiliation: 1: Pediatric Otolaryngology Service, Department of Otolaryngology, Wilford Hall United States Air Force Medical Center, San Antonio, Texas; Source Info: Aug2006, Vol. 115 Issue 8, p624; Subject Term: EXCISION (Surgery); Subject Term: OPERATIVE surgery; Subject Term: SURGERY; Subject Term: TONGUE; Subject Term: ORAL surgery; Author-Supplied Keyword: macroglossia; Author-Supplied Keyword: submucosal minimally invasive lingual excision; Author-Supplied Keyword: tongue base reduction; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22005714&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Goodson, Michael S. AU - Crookes-Goodson, Wendy J. AU - Kimbell, Jennifer R. AU - McFall-Ngai, Margaret J. T1 - Characterization and Role of p53 Family Members in the Symbiont-Induced Morphogenesis of the Euprymna scolopes Light Organ. JO - Biological Bulletin JF - Biological Bulletin Y1 - 2006/08// VL - 211 IS - 1 M3 - Article SP - 7 EP - 17 SN - 00063185 AB - Within hours of hatching, the squid Euprymna scolopes forms a specific light organ symbiosis with the marine luminous bacterium Vibrio fischeri. Interactions with the symbiont result in the loss of a complex ciliated epithelium dedicated to promoting colonization of host tissue, and some or all of this loss is due to widespread, symbiont-induced apoptosis. Members of the p53 family, including p53, p63, and p73, are conserved across broad phyletic lines and p63 is thought to be the ancestral gene. These proteins have been shown to induce apoptosis and developmental morphogenesis. In this study, we characterized p63-1ike transcripts from mRNA isolated from the symbiotic tissues of E. scolopes and described their role in symbiont-induced morphogenesis. Using degenerate RTPCR and RACE PCR, we identified two p63-1ike transcripts encoding proteins of 431 and 567 amino acids. These transcripts shared identical nucleotides where they overlapped, suggesting that they are splice variants of the same gene. Immunocytochemistry and Western blots using an antibody specific for E. scolopes suggested that the p53 family members are activated in cells of the symbiont-harvesting structures of the symbiotic light organ. We propose that once the symbiosis is initiated, a symbiont-induced signal activates p53 family members, inducing apoptosis and developmental morphogenesis of the light organ. [ABSTRACT FROM AUTHOR] AB - Copyright of Biological Bulletin is the property of Marine Biological Laboratories and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EUPRYMNA scolopes KW - VIBRIO fischeri KW - TISSUES KW - APOPTOSIS KW - GENES KW - SYMBIOSIS KW - IMMUNOCYTOCHEMISTRY N1 - Accession Number: 22292889; Goodson, Michael S. 1 Crookes-Goodson, Wendy J. 1,2 Kimbell, Jennifer R. 1,3 McFall-Ngai, Margaret J. 1; Email Address: mjmcfallngai@wisc.edu; Affiliation: 1: Department of Medical Microbiology and Immunology, University of Wisconsin, Madison, Wisconsin 53706 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433 3: Pacific Health Research Institute, Honolulu, Hawaii 96813; Source Info: Aug2006, Vol. 211 Issue 1, p7; Subject Term: EUPRYMNA scolopes; Subject Term: VIBRIO fischeri; Subject Term: TISSUES; Subject Term: APOPTOSIS; Subject Term: GENES; Subject Term: SYMBIOSIS; Subject Term: IMMUNOCYTOCHEMISTRY; Number of Pages: 11p; Illustrations: 3 Diagrams, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22292889&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reid, J. Robert AU - Marsh, Eric D. AU - Webster, Richard T. T1 - Micromachined Rectangular-Coaxial Transmission Lines. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques Y1 - 2006/08// VL - 54 IS - 8 M3 - Article SP - 3433 EP - 3442 SN - 00189480 AB - Rectangular-coaxial (recta-coax) transmission lines fabricated through a three-dimensional micromachining process are presented. These lines are shown to have significant advantages over competing integrated transmission lines such as microstrip and coplanar waveguides. Design equations are presented for impedance, loss, and frequency range. The equations are confirmed with simulations and measurements. The quality factor of shorted λ/4 resonators is measured to be 156 at 60 GHz. This corresponds to a line loss of 0.353 dB/cm. Advantages of these lines for passive millimeter-wave circuits including ease of signal routing, high isolation, and signal crossovers are demonstrated with realized lines and couplers. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVE transmission lines KW - STRIP transmission lines KW - MICROSTRIP antennas KW - WAVE-guide filters KW - WAVE-guide circulators KW - DIELECTRIC resonators KW - DIRECTIONAL couplers KW - MICROWAVE devices KW - Coplanar waveguides (CPWs) KW - couplers KW - filters KW - microstrip KW - millimeter-wave circuits KW - resonators N1 - Accession Number: 22706021; Reid, J. Robert 1; Email Address: James.Reid@hanscom.af.mil Marsh, Eric D. 1 Webster, Richard T. 1; Affiliation: 1: Antenna Technology Branch, Air Force Research Laboratory, Hanscom AFB, MA 01731 USA; Source Info: Aug2006, Vol. 54 Issue 8, p3433; Subject Term: MICROWAVE transmission lines; Subject Term: STRIP transmission lines; Subject Term: MICROSTRIP antennas; Subject Term: WAVE-guide filters; Subject Term: WAVE-guide circulators; Subject Term: DIELECTRIC resonators; Subject Term: DIRECTIONAL couplers; Subject Term: MICROWAVE devices; Author-Supplied Keyword: Coplanar waveguides (CPWs); Author-Supplied Keyword: couplers; Author-Supplied Keyword: filters; Author-Supplied Keyword: microstrip; Author-Supplied Keyword: millimeter-wave circuits; Author-Supplied Keyword: resonators; Number of Pages: 10p; Illustrations: 3 Black and White Photographs, 8 Diagrams, 3 Charts, 7 Graphs; Document Type: Article L3 - 10.1109/TMTT.2006.879133 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22706021&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jin, Zhipu AU - Shima, Tal AU - Schumacher, Corey J. T1 - Optimal Scheduling for Refueling Multiple Autonomous Aerial Vehicles. JO - IEEE Transactions on Robotics JF - IEEE Transactions on Robotics Y1 - 2006/08// VL - 22 IS - 4 M3 - Article SP - 682 EP - 693 SN - 15523098 AB - The scheduling, for autonomous refueling, of multiple unmanned aerial vehicles (UAVs) is posed as a combinatorial optimization problem. An efficient dynamic programming (DP) algorithm is introduced for finding the optimal initial refueling sequence. The optimal sequence needs to be recalculated when conditions change, such as when UAVs join or leave the queue unexpectedly. We develop a systematic shuffle scheme to reconfigure the UAV sequence using the least amount of shuffle steps. A similarity metric over UAV sequences is introduced to quantify the reconfiguration effort which is treated as an additional cost and is integrated into the DP algorithm. Feasibility and limitations of this novel approach are also discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Robotics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REMOTELY piloted vehicles KW - DYNAMIC programming KW - SYSTEMS engineering KW - KINEMATICS of machinery KW - MATHEMATICAL optimization KW - ALGORITHMS KW - Aerial vehicles KW - autonomous refueling KW - dynamic programming (DP) KW - formation reconfiguration KW - scheduling. N1 - Accession Number: 21927158; Jin, Zhipu 1; Email Address: jzp@caltech.edu Shima, Tal 2; Email Address: tal.shima@technion.ac.il Schumacher, Corey J. 3; Email Address: Corey.Schumacher@wpafb.af.mil; Affiliation: 1: Department of Electrical Engineering, California Institute of Technology, Pasadena, CA 91125 USA. 2: Department of Aerospace Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel. 3: Control Design and Analysis Branch, Air Vehicles Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA.; Source Info: Aug2006, Vol. 22 Issue 4, p682; Subject Term: REMOTELY piloted vehicles; Subject Term: DYNAMIC programming; Subject Term: SYSTEMS engineering; Subject Term: KINEMATICS of machinery; Subject Term: MATHEMATICAL optimization; Subject Term: ALGORITHMS; Author-Supplied Keyword: Aerial vehicles; Author-Supplied Keyword: autonomous refueling; Author-Supplied Keyword: dynamic programming (DP); Author-Supplied Keyword: formation reconfiguration; Author-Supplied Keyword: scheduling.; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TRO.2006.878793 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21927158&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O.N. AU - Miracle, D.B. AU - Scott, J.M. T1 - Development and characterization of Ca–Mg–Zn–Cu bulk metallic glasses JO - Intermetallics JF - Intermetallics Y1 - 2006/08// VL - 14 IS - 8/9 M3 - Article SP - 1055 EP - 1060 SN - 09669795 AB - Abstract: A number of ternary Ca–Mg–Zn and Ca–Mg–Cu and quaternary Ca–Mg–Zn–Cu bulk metallic glasses were produced using recently developed specific criteria. Their glass forming ability was correlated to the alloy chemistry, melting temperature, and driving force for crystallization of super-cooled liquid. A structural assessment using the efficient cluster packing model was also applied and showed a good ability to represent these glasses. Glass transition temperature, crystallization temperature and heat of crystallization were also determined for the produced alloys. Compression tests were conducted on a quaternary alloy at room temperature and in the temperature range of super-cooled liquid. [Copyright &y& Elsevier] AB - Copyright of Intermetallics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TERNARY alloys KW - METALLIC glasses KW - CRYSTALLIZATION KW - GLASS transition temperature KW - SUPERCOOLED liquids KW - B. Glasses, metallic KW - B. Phase diagrams KW - F. Calorimetry KW - F. Diffraction KW - F. Mechanical testing N1 - Accession Number: 20622340; Senkov, O.N. 1,2; Email Address: oleg.senkov@wpafb.af.mil Miracle, D.B. 1 Scott, J.M. 1,2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA 2: UES, Inc., Materials and Processes Division, 4401 Dayton-Xenia Road, Dayton, OH 45432, USA; Source Info: Aug2006, Vol. 14 Issue 8/9, p1055; Subject Term: TERNARY alloys; Subject Term: METALLIC glasses; Subject Term: CRYSTALLIZATION; Subject Term: GLASS transition temperature; Subject Term: SUPERCOOLED liquids; Author-Supplied Keyword: B. Glasses, metallic; Author-Supplied Keyword: B. Phase diagrams; Author-Supplied Keyword: F. Calorimetry; Author-Supplied Keyword: F. Diffraction; Author-Supplied Keyword: F. Mechanical testing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.intermet.2006.01.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20622340&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, H. AU - Mall, S. AU - Sathish, S. AU - Blodgett, M.P. T1 - Evolution of residual stresses in a stress-free titanium alloy subjected to fretting fatigue JO - Materials Letters JF - Materials Letters Y1 - 2006/08// VL - 60 IS - 17/18 M3 - Article SP - 2222 EP - 2226 SN - 0167577X AB - Abstract: This study investigated the complete history of residual stress evolution in a stress-free titanium alloy, Ti–6Al–4 V under fretting fatigue loading condition. Compressive residual stress developed in the contact region due to the local plastic deformation between contacting bodies. The compressive residual stress then increased initially with increasing number of fretting fatigue cycles reaching to a maximum value, and then it decreased (or relaxed) with further cycling. This relaxation of compressive residual stress was due to the delamination and detachment of flake-like (wear sheet) material in the fretted region. [Copyright &y& Elsevier] AB - Copyright of Materials Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESIDUAL stresses KW - TITANIUM alloys KW - METALS -- Fatigue KW - DEFORMATIONS (Mechanics) KW - Fretting fatigue KW - Residual stress KW - Titanium alloy N1 - Accession Number: 20869322; Lee, H. 1 Mall, S. 2; Email Address: Shankar.Mall@afit.edu Sathish, S. 3,4 Blodgett, M.P. 3; Affiliation: 1: School of Advanced Materials Engineering, Andong National University Andong, South Korea 2: Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH, USA 3: Metals, Ceramics and NDE Division, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA 4: University of Dayton, Dayton, OH, USA; Source Info: Aug2006, Vol. 60 Issue 17/18, p2222; Subject Term: RESIDUAL stresses; Subject Term: TITANIUM alloys; Subject Term: METALS -- Fatigue; Subject Term: DEFORMATIONS (Mechanics); Author-Supplied Keyword: Fretting fatigue; Author-Supplied Keyword: Residual stress; Author-Supplied Keyword: Titanium alloy; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.matlet.2005.12.115 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20869322&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hrozhyk, U. AU - Serak, S. AU - Tabiryan, N. AU - Bunning, T. J. T1 - Wide Temperature Range Azobenzene Nematic and Smectic LC Materials. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2006/08// VL - 454 IS - 1 M3 - Article SP - 235 EP - 245 SN - 15421406 AB - We have developed a series of azobenzene liquid crystals (azo LC) compounds, both multicomponent as well as single component, that possess room temperature nematic and smectic phases. Some of these materials have a wide mesophase temperature range which makes them useful for a variety of practical applications. Two main strategies were used for controlling the temperature range of these mesogenic azo LC materials: 1) chemical modification of azobenzene molecules with different terminal pendants; and 2) development of multicomponent compositions. These materials were highly photosensitive exhibiting nonlinear refraction and transmission at nanowatt/microwatt power levels. Physical, electro- and nonlinear-optical parameters of many of these materials have been characterized in detail. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - CRYSTALLOGRAPHY KW - LIGHT -- Scattering KW - BRIGHTNESS temperature KW - REFRACTION (Optics) KW - LIGHT sources KW - azobenzene KW - liquid crystals KW - multicomponent compositions KW - thermal phase transitions N1 - Accession Number: 22107547; Hrozhyk, U. 1 Serak, S. 1 Tabiryan, N. 1; Email Address: nelson@beamco.com Bunning, T. J. 2; Affiliation: 1: Beam Engineering for Advance Measurements Co., Winter Park, Florida, USA 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio, USA; Source Info: 2006, Vol. 454 Issue 1, p235; Subject Term: LIQUID crystals; Subject Term: CRYSTALLOGRAPHY; Subject Term: LIGHT -- Scattering; Subject Term: BRIGHTNESS temperature; Subject Term: REFRACTION (Optics); Subject Term: LIGHT sources; Author-Supplied Keyword: azobenzene; Author-Supplied Keyword: liquid crystals; Author-Supplied Keyword: multicomponent compositions; Author-Supplied Keyword: thermal phase transitions; Number of Pages: 1p; Illustrations: 1 Diagram, 2 Charts, 2 Graphs; Document Type: Article L3 - 10.1080/15421400600655733 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22107547&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lyuksyutov, S.F. AU - Paramonov, P.B. AU - Mayevska, O.V. AU - Reagan, M.A. AU - Sancaktar, E. AU - Vaia, R.A. AU - Juhl, S. T1 - Atomic force microscope tip spontaneous retraction from dielectric surfaces under applied electrostatic potential JO - Ultramicroscopy JF - Ultramicroscopy Y1 - 2006/08// VL - 106 IS - 10 M3 - Article SP - 909 EP - 913 SN - 03043991 AB - Abstract: A time-resolved method for tip’ retraction at μs-scale away from dielectric surfaces has been developed. Analysis of the forces in the system comprising AFM tip, water meniscus, and polymer film suggests that an electrostatic repulsion of the tip from the surface in the double-layered (water and polymer) system, and water condensation in the tip–surface junction are the dominant factors enabling the mechanical work for tip retraction. Nanostructures of 5–80nm height are formed in polymeric surfaces as a result. This interesting physical phenomenon could be used for nanostructures patterning in polymeric materials at enhanced aspect ratio. [Copyright &y& Elsevier] AB - Copyright of Ultramicroscopy is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATOMIC force microscopy KW - DIELECTRICS KW - CONDENSATION KW - POLYMERS KW - Atomic force microscopy KW - Electrostatic forces KW - Water meniscus N1 - Accession Number: 22013282; Lyuksyutov, S.F. 1; Email Address: sfl@physics.uakron.edu Paramonov, P.B. 1 Mayevska, O.V. 1 Reagan, M.A. 1 Sancaktar, E. 1 Vaia, R.A. 2 Juhl, S. 2; Affiliation: 1: Departments of Physics, and Polymer Engineering, The University of Akron, Akron OH 44325, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Aug2006, Vol. 106 Issue 10, p909; Subject Term: ATOMIC force microscopy; Subject Term: DIELECTRICS; Subject Term: CONDENSATION; Subject Term: POLYMERS; Author-Supplied Keyword: Atomic force microscopy; Author-Supplied Keyword: Electrostatic forces; Author-Supplied Keyword: Water meniscus; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.ultramic.2006.04.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22013282&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jordan, J. L. AU - Dick, R. D. AU - Ferranti, L. AU - Thadhani, N. N. AU - Austin, R. A. AU - McDowell, D. L. AU - Benson, D. J. T1 - Equation of State of Aluminum — Iron Oxide (Fe2O3) — Epoxy Composite: Modeling and Experiment. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/07/28/ VL - 845 IS - 1 M3 - Article SP - 157 EP - 160 PB - American Institute of Physics SN - 0094243X AB - We report on the investigation of the equation of state of an 2Al+Fe2O3+ 50 wt.% epoxy composite in the 2–23 GPa pressure range. An explosive loading technique, with piezoelectric pins to measure the shock velocity in the sample and in a donor material, was used for experiments exceeding 5 GPa. Gas gun experiments were performed on the same composites at lower pressures, using PVDF stress gauges to record the input and propagated stresses and the shock velocity based on the time of travel through the sample thickness. The experimental results are compared to numerical simulations of shock compression in discrete particle models. Model results are in agreement with experimental results. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EQUATIONS of state KW - PHYSICAL & theoretical chemistry KW - EPOXY compounds KW - PIEZOELECTRIC materials KW - STRAINS & stresses (Mechanics) KW - PARTICLES (Nuclear physics) KW - aluminum-iron oxide KW - epoxy KW - Equation of state KW - finite element modeling KW - shock waves N1 - Accession Number: 21910339; Jordan, J. L. 1 Dick, R. D. 2 Ferranti, L. 3 Thadhani, N. N. 3 Austin, R. A. 4 McDowell, D. L. 4 Benson, D. J. 5; Affiliation: 1: Air Force Research Laboratory (AFRL/MNME), Eglin AFB, FL 32542 2: Shocks Unlimited, Albuquerque, NM 3: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0254 4: G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332 5: Department of Mechanical and Aerospace Engineering, University of California — San Diego, La Jolla, CA 92093-0404; Source Info: 2006, Vol. 845 Issue 1, p157; Subject Term: EQUATIONS of state; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: EPOXY compounds; Subject Term: PIEZOELECTRIC materials; Subject Term: STRAINS & stresses (Mechanics); Subject Term: PARTICLES (Nuclear physics); Author-Supplied Keyword: aluminum-iron oxide; Author-Supplied Keyword: epoxy; Author-Supplied Keyword: Equation of state; Author-Supplied Keyword: finite element modeling; Author-Supplied Keyword: shock waves; Number of Pages: 4p; Illustrations: 1 Diagram, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.2263288 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21910339&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bonora, N. AU - Ruggiero, A. AU - Flater, P. J. AU - House, J. W. AU - DeAngelis, R. J. T1 - On the Role of Material Post-Necking Stress-Strain Curve in the Simulation of Dynamic Impact. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/07/28/ VL - 845 IS - 1 M3 - Article SP - 701 EP - 704 PB - American Institute of Physics SN - 0094243X AB - Accurate material constitutive modeling is critical for the quality and reliability of the simulation of dynamic impact processes. Under dynamic loading ductile structural components can experience very large deformation that, in terms of equivalent plastic strain, can be well beyond the strain at which necking would occur in uniaxial tensile tests. Unfortunately, the material flow curve for ductile metals can only be measured over a limited strain range while at large strain it is either extrapolated or corrected in some way. In this paper the role of the approximation of the material flow law in the post-necking range is investigated with particular reference to the Taylor test. Result seems to indicate that the flow law governs the shape of the mushroom region while temperature and strain rate have a more important role in the resulting deformed shape of the intermediate and rear portion of the specimen geometry. In particular, the temperature effect exponent in the J&C expression can be calibrated based on the final length of the impacted cylinder. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - IMPACT (Mechanics) KW - MATERIALS -- Dynamic testing KW - DEFORMATIONS (Mechanics) KW - MECHANICS (Physics) KW - Cu KW - plasticity KW - round notched bar KW - strength model KW - Taylor test N1 - Accession Number: 21910210; Bonora, N. 1 Ruggiero, A. 1 Flater, P. J. 2 House, J. W. 2 DeAngelis, R. J. 3; Affiliation: 1: DiMSAT- University of Cassino, Cassino, Italy, I-03043 2: Air Force Research Laboratory—AFRL/MN, Eglin AFB, FL 32542 3: University of Florida — GERC, Shalimar, FL 32579; Source Info: 2006, Vol. 845 Issue 1, p701; Subject Term: STRAINS & stresses (Mechanics); Subject Term: IMPACT (Mechanics); Subject Term: MATERIALS -- Dynamic testing; Subject Term: DEFORMATIONS (Mechanics); Subject Term: MECHANICS (Physics); Author-Supplied Keyword: Cu; Author-Supplied Keyword: plasticity; Author-Supplied Keyword: round notched bar; Author-Supplied Keyword: strength model; Author-Supplied Keyword: Taylor test; Number of Pages: 4p; Illustrations: 8 Graphs; Document Type: Article L3 - 10.1063/1.2263418 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21910210&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Flater, P. J. AU - House, J. W. AU - De Angelis, R. J. AU - Nixon, M. E. T1 - Damage Characterization in Copper Deformed under Hydrostatic Stress — Experimental Analysis. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/07/28/ VL - 845 IS - 1 M3 - Article SP - 721 EP - 724 PB - American Institute of Physics SN - 0094243X AB - The results of an experimental investigation designed to determine the effect of damage created by hydrostatic tensile loading on the properties of copper are reported. Three metallurgical conditions of half-hard OFHC copper were investigated; as worked; annealed 2hr at 400°C (∼40 micron grain diameter); and annealed 2hr at 800°C (∼80 micron grain diameter). Mechanical property characterization included uniaxial compression tests. High rate plasticity and damage was introduced by Taylor and rod-on-rod impact tests. The damage from the high rate experiments was characterized using optical and scanning electron microscopy. Quasi-static compression specimens machined from recovered high rate samples were tested to determine the influence of damage on the mechanical response of the material. The compression test results will be discussed in relationship to the starting microstructure and the extent of damaged introduced into the material. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLURGY KW - MECHANICS (Physics) KW - HYDROSTATICS KW - PLASTICITY KW - DEFORMATIONS (Mechanics) KW - Damage KW - Hydrostatic pressure KW - OFHC copper KW - Taylor impact N1 - Accession Number: 21910205; Flater, P. J. 1 House, J. W. 1 De Angelis, R. J. 2 Nixon, M. E. 1; Affiliation: 1: Air Force Research Laboratory/Munitions Directorate, 101 W. Eglin Blvd, Eglin AFB, FL 32542 2: REEF, University of Florida, 1350 N. Poquito Road, Shalimar, FL 32579; Source Info: 2006, Vol. 845 Issue 1, p721; Subject Term: METALLURGY; Subject Term: MECHANICS (Physics); Subject Term: HYDROSTATICS; Subject Term: PLASTICITY; Subject Term: DEFORMATIONS (Mechanics); Author-Supplied Keyword: Damage; Author-Supplied Keyword: Hydrostatic pressure; Author-Supplied Keyword: OFHC copper; Author-Supplied Keyword: Taylor impact; Number of Pages: 4p; Illustrations: 1 Black and White Photograph, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.2263423 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21910205&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ferranti, Louis AU - Thadhani, Naresh N. AU - House, Joel W. T1 - Dynamic Mechanical Behavior Characterization of Epoxy-Cast Al+Fe2O3 Mixtures. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/07/28/ VL - 845 IS - 1 M3 - Article SP - 805 EP - 808 PB - American Institute of Physics SN - 0094243X AB - Dynamic mechanical property measurement experiments were conducted on epoxy-cast Al+Fe2O3 powder mixture specimens using the classic Taylor anvil test at impact velocities up to 200 m/s. Reverse Taylor anvil impact experiments were also conducted at lower velocities using a single stage gas gun by impacting a rigid anvil onto a stationary specimen. Dynamic deformation, fracture, and viscoelastic response of the cast specimens (containing 20–50 and 100% epoxy) were captured in real time utilizing high-speed photography. Detailed image analysis of transient deformation reveals a significant elastic strain contribution to the total strain, which complicates the calculation of a constant dynamic yield strength value for the composite material. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPOXY compounds KW - DEFORMATIONS (Mechanics) KW - MECHANICS (Physics) KW - STRAINS & stresses (Mechanics) KW - COMPOSITE materials KW - aluminum-iron oxide KW - epoxy KW - Taylor impact N1 - Accession Number: 21910185; Ferranti, Louis 1 Thadhani, Naresh N. 1 House, Joel W. 2; Affiliation: 1: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245 2: US Air Force Research Laboratory, Munitions Directorate-AFRL/MNMW, Eglin AFB, FL 32542; Source Info: 2006, Vol. 845 Issue 1, p805; Subject Term: EPOXY compounds; Subject Term: DEFORMATIONS (Mechanics); Subject Term: MECHANICS (Physics); Subject Term: STRAINS & stresses (Mechanics); Subject Term: COMPOSITE materials; Author-Supplied Keyword: aluminum-iron oxide; Author-Supplied Keyword: epoxy; Author-Supplied Keyword: Taylor impact; Number of Pages: 4p; Illustrations: 1 Black and White Photograph, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.2263444 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21910185&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stewart, D. Scott AU - Lambert, David E. AU - Sunhee Yoo AU - Wescott, Bradley L. T1 - Experimental Validation of Detonation Shock Dynamics in Condensed Explosives. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/07/28/ VL - 845 IS - 1 M3 - Article SP - 1018 EP - 1021 PB - American Institute of Physics SN - 0094243X AB - Experiments on the HMX-based, condensed explosive PBX-9501 were carried out to validate a reduced asymptotically derived description of detonation shock dynamics (DSD) where it is assumed that the normal detonation shock speed is determined by the total shock curvature. The passover experiment has an embedded lead disk in a right circular cylindrical charge of PBX-9501 and is initiated from the bottom. A range of dynamically changing states, with both divergent (convex) and converging (concave) shock shapes are realized as the detonation passes over the disk. The time of arrival of the detonation shock at the top surface of the charge is recorded and compared against the DSD simulation and a separate multi-material simulation (DNS). A new wide-ranging equation of state (EOS) and rate law is used to describe the explosive and is employed in both the theoretical (DSD) calculations and the multi-material simulations. The experiment, theory and simulation are found to be in excellent agreement. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXPLOSIVES KW - DYNAMICS KW - SHOCK (Mechanics) KW - MECHANICS (Physics) KW - IMPACT (Mechanics) KW - PHYSICS KW - Detonation shock dynamics KW - experiment KW - PBX-9501 KW - validation N1 - Accession Number: 21910134; Stewart, D. Scott 1 Lambert, David E. 2 Sunhee Yoo 1 Wescott, Bradley L. 3; Affiliation: 1: Mechanical and Industrial Engineering, University of Illinois, Urbana, IL 61801 2: Air Force Research Laboratory, Munitions Directorate, Eglin AFB, 32542 3: Theoretical and Applied Mechanics, University of Illinois, Urbana, IL 61801; Source Info: 2006, Vol. 845 Issue 1, p1018; Subject Term: EXPLOSIVES; Subject Term: DYNAMICS; Subject Term: SHOCK (Mechanics); Subject Term: MECHANICS (Physics); Subject Term: IMPACT (Mechanics); Subject Term: PHYSICS; Author-Supplied Keyword: Detonation shock dynamics; Author-Supplied Keyword: experiment; Author-Supplied Keyword: PBX-9501; Author-Supplied Keyword: validation; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325920 Explosives Manufacturing; Number of Pages: 4p; Illustrations: 1 Black and White Photograph, 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.2263495 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21910134&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tewari, A. AU - Spowart, J.E. AU - Gokhale, A.M. AU - Mishra, R.S. AU - Miracle, D.B. T1 - Characterization of the effects of friction stir processing on microstructural changes in DRA composites JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2006/07/25/ VL - 428 IS - 1/2 M3 - Article SP - 80 EP - 90 SN - 09215093 AB - Abstract: The effect of friction stir processing (FSP) on the spatial homogeneity of SiC particles in discontinuously reinforced aluminum (DRA) metal matrix composites is investigated. DRA composites were produced with microstructures having controlled degrees of clustering, by carefully varying the particle size ratios (PSR) of the powders used in their fabrication. In this contribution, the spatial heterogeneity of these DRA microstructures is characterized by careful measurement of statistical two-point correlation functions and also via the multi-scalar analysis of area fractions (MSAAF) technique, at length scales up to 1mm, by the use of high-resolution, large-area image montaging. These complimentary techniques yield similar results for the spatial heterogeneity of the DRA materials, both before and after FSP. The microstructural data suggest that significant microstructural modifications are imparted by FSP, including reductions in the measured spatial heterogeneity and microstructural anisotropy, as well as re-orientation of the reinforcement particles due to the stirring action. These microstructural modifications have a strong influence on the experimentally-measured tensile strengths and ductilities of the DRA composites. A general relationship exists between the measured tensile ductility and the microstructural parameters of homogeneous length scale (L H) and cluster size (d clus), independent of the DRA processing history. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Analysis KW - MICROMECHANICS KW - MICROSTRUCTURE KW - STEREOLOGY KW - Discontinuously-reinforced aluminum KW - Friction-stir processing KW - Microstructural heterogeneity N1 - Accession Number: 21494539; Tewari, A. 1 Spowart, J.E. 2; Email Address: Jonathan.Spowart@wpafb.af.mil Gokhale, A.M. 3 Mishra, R.S. 4 Miracle, D.B. 2; Affiliation: 1: India Science Lab, GM R&D and Strategic Planning, Bangalore, India 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Bldg. 655, 2230 Tenth St., Ste. 1, Wright-Patterson Air Force Base, OH 45433-7817, USA 3: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA 4: University of Missouri-Rolla, Department of Metallurgical Engineering, Rolla, MO 65409, USA; Source Info: Jul2006, Vol. 428 Issue 1/2, p80; Subject Term: MATERIALS -- Analysis; Subject Term: MICROMECHANICS; Subject Term: MICROSTRUCTURE; Subject Term: STEREOLOGY; Author-Supplied Keyword: Discontinuously-reinforced aluminum; Author-Supplied Keyword: Friction-stir processing; Author-Supplied Keyword: Microstructural heterogeneity; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.msea.2006.04.106 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21494539&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Su, Weijie AU - Singh, Kristi AU - Rogers, Joy AU - Slagle, Jon AU - Fleitz, Paul T1 - The relationship of structure and optical properties of haloporphyrins: A new way to synthesize porphyrin chromophores and the investigation of their optical properties JO - Materials Science & Engineering: B JF - Materials Science & Engineering: B Y1 - 2006/07/25/ VL - 132 IS - 1/2 M3 - Article SP - 12 EP - 15 SN - 09215107 AB - Abstract: A new synthetic method of octabromoporphyrin compounds has been created to simplify the conventional multi-step synthesis and purification to a one step reaction. A series of new meso-substituted β-bromoporphyrins, including tetraphenyloctabromoporphyrin (OBTPP), tetra-9-ethyl-carbazoleoctabromoporphyrin (TCarbOBP), tetra-2-thienyloctabromoporphyrin (T2-thioOBP), tetra-3-thienyloctabromoporphyrin (T3-thioOBP), tetra-5-bromo-2-thienyloctabromoporphyrin (5BrT2-thioOBP) and relative Zn porphyrins, have been prepared by this method. In this paper we discuss the synthesis of these compounds and their optical behaviors, especially the effects of the different meso-substituents on the photophysical properties. In order to investigate the different optical properties of porphyrins with β-bromo-substitution and without β-bromo-substitution, corresponding non-brominated meso-substituted porphyrins have also been synthesized and studied. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PORPHYRINS KW - OPTICAL properties KW - OPTICAL communications KW - MACROCYCLIC compounds KW - Halogenated porphyrin KW - Photophysics KW - Porphyrin KW - Synthesis N1 - Accession Number: 21828629; Su, Weijie 1,2; Email Address: weijie.su@wpafb.af.mil Singh, Kristi 1,3 Rogers, Joy 1,3 Slagle, Jon 1,2 Fleitz, Paul 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH, USA 2: AT&T Government Solutions, 2940 Presidential Drive, Suite 390, Fairborn, OH 45324, USA 3: UES Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432-1894, USA; Source Info: Jul2006, Vol. 132 Issue 1/2, p12; Subject Term: PORPHYRINS; Subject Term: OPTICAL properties; Subject Term: OPTICAL communications; Subject Term: MACROCYCLIC compounds; Author-Supplied Keyword: Halogenated porphyrin; Author-Supplied Keyword: Photophysics; Author-Supplied Keyword: Porphyrin; Author-Supplied Keyword: Synthesis; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.mseb.2006.02.029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21828629&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, David H. AU - Baek, Jong-Beom AU - Tan, Loon-Seng T1 - Grafting of vapor-grown carbon nanofibers (VGCNF) with a hyperbranched poly(ether-ketone) JO - Materials Science & Engineering: B JF - Materials Science & Engineering: B Y1 - 2006/07/25/ VL - 132 IS - 1/2 M3 - Article SP - 103 EP - 107 SN - 09215107 AB - Abstract: An in-situ polymerization of an A2B monomer, 5-phenoxyisophthalic acid, in the presence of various amounts (5, 10 and 20wt%) of vapor-grown carbon nanofibers (VGCNF) was carried out in poly(phosphoric acid)/phosphorus pentoxide (PPA/P2O5; 1:4, w/w) medium. 5-Phenoxyisophthalic acid polymerizes via Friedel-Crafts acylation in PPA to form a CO2H-terminated hyperbranched poly(ether-ketone) or HPB-PEK. The resulting (HPB-PEK)-g-VGCNF composites were not soluble in dichlorobenzene or toluene, but also showed significant solubility in polar solvents such as NMP, DMF, DMAC, ethanol, and significantly higher solubility in ethanol/triethylamine mixture or in aqueous ammonia solution, apparently stemming from the ionization of the numerous surface CO2H groups. This is in contrast to the nanocomposites derived from VGCNF grafted with a linear meta-poly(ether-ketone), mPEK, with 1–10wt% VGCNF content that have much lower solubility in these polar solvents but are more soluble in methanesulfonic acid [J.-B. Baek, C.B. Lyons, L.-S. Tan, Macromolecules 37 (2004) 8278]. The overall evidence based on the data from elemental analysis, thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FT-IR) as well as scanning electron microscopy of the resulting materials implicates that under our reaction conditions, HPB-PEK was grafted to the surfaces of VGCNF resulting in the formation of highly coated nanofibers. TGA data also support that VGCNF has remained more or less structurally intact under the mildly acidic, relatively high-shearing and hot polymerization conditions. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCANNING electron microscopy KW - POLYMERIZATION KW - PHOSPHORIC acid KW - SPECTRUM analysis KW - Acidic medium KW - Carbon nanofibers KW - Polycondensation KW - Polyetherketones N1 - Accession Number: 21828645; Wang, David H. 1 Baek, Jong-Beom 2 Tan, Loon-Seng 3; Email Address: loon-seng.tan@wpafb.af.mil; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469-0168, USA 2: Department of Industrial Chemistry, Chungbuk National University, Chungbuk 361-763, South Korea 3: Polymer Branch, AFRL/MLBP, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Jul2006, Vol. 132 Issue 1/2, p103; Subject Term: SCANNING electron microscopy; Subject Term: POLYMERIZATION; Subject Term: PHOSPHORIC acid; Subject Term: SPECTRUM analysis; Author-Supplied Keyword: Acidic medium; Author-Supplied Keyword: Carbon nanofibers; Author-Supplied Keyword: Polycondensation; Author-Supplied Keyword: Polyetherketones; NAICS/Industry Codes: 325312 Phosphatic Fertilizer Manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.mseb.2006.02.039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21828645&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Evans, D. R. AU - Basun, S. A. AU - Cook, G. AU - Meltzer, R. S. T1 - Role of delocalized charges in the pyroelectric effect. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/07/24/ VL - 89 IS - 4 M3 - Article SP - 041104 PB - American Institute of Physics SN - 00036951 AB - The temperature dependence of the pyroelectric effect is investigated. An increase in dark conductivity resulting from either trap depopulation or proton migration is shown to suppress the pyroelectric-generated high voltage. Electrically shorting crystal z surfaces coated with a transparent conductive layer is shown to be effective in eliminating the breakdown of the surface charge in air and thus provides a means to study weak thermoluminescence in pyroelectric crystals. In addition, a new method to measure proton migration and dark conductivity is proposed; a direct correlation between the emitted light intensity resulting from ionization of air and the pyroelectric current is observed. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PYROELECTRICITY KW - FREE surfaces (Crystallography) KW - CRYSTALS KW - ELECTRIC conductivity KW - SURFACES (Geometry) KW - THERMOLUMINESCENCE N1 - Accession Number: 21871668; Evans, D. R. 1; Email Address: dean.evans@wpafb.af.mil Basun, S. A. 2 Cook, G. 1,3 Meltzer, R. S. 4; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433 2: A. F. Ioffe Physico-Technical Institute, Polytechnicheskaya 26, 194021, St. Petersburg, Russia 3: Universal Technology Corporation, 1270 North Fairfield Road, Dayton, Ohio 45432 4: Department of Physics and Astronomy, University of Georgia, Athens, Georgia 30602; Source Info: 7/24/2006, Vol. 89 Issue 4, p041104; Subject Term: PYROELECTRICITY; Subject Term: FREE surfaces (Crystallography); Subject Term: CRYSTALS; Subject Term: ELECTRIC conductivity; Subject Term: SURFACES (Geometry); Subject Term: THERMOLUMINESCENCE; Number of Pages: 3p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.2234565 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21871668&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Music, Denis AU - Sun, Zhimei AU - Voevodin, Andrey A. AU - Schneider, Jochen M. T1 - Electronic structure and shearing in nanolaminated ternary carbides JO - Solid State Communications JF - Solid State Communications Y1 - 2006/07/22/ VL - 139 IS - 4 M3 - Article SP - 139 EP - 143 SN - 00381098 AB - Abstract: We have studied shearing in M2AlC phases (M=Sc,Y,La,Ti,Zr,Hf,V,Nb,Ta,Cr,Mo,W) using ab initio calculations. We propose that these phases can be classified into two groups based on the valence electron concentration induced changes in C44. One group comprises M=V B and VIB, where the C44 values are approximately 170 GPa and independent of the corresponding MC. The other group includes M=IIIB and IVB, where the C44 shows a linear dependency with the corresponding MC. This may be understood based on the electronic structure: shear resistant bands are filled in M2AlC phases with M=V B and VIB, while they are not completely filled when M=IIIB and IVB. This notion is also consistent with our stress–strain analysis. These valence electron concentration induced changes in shear behaviour were compared to previously published valence electron concentration induced changes in compression behaviour [Z. Sun, D. Music, R. Ahuja, S. Li, J.M. Schneider, Phys. Rev. B 70 (2004) 092102]. These classification proposals exhibit identical critical valence electron concentration values for the group boundary. However, the physical mechanisms are not identical: the classification proposal for the bulk modulus is based on MC–A coupling, while shearing is based on MC–MC coupling. [Copyright &y& Elsevier] AB - Copyright of Solid State Communications is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONDUCTION electrons KW - PARTICLES (Nuclear physics) KW - ELECTRONIC structure KW - CARBON compounds KW - A. M2AlC phases KW - C. Shearing KW - D. Ab initio calculations N1 - Accession Number: 21752189; Music, Denis 1; Email Address: music@mch.rwth-aachen.de Sun, Zhimei 2 Voevodin, Andrey A. 3 Schneider, Jochen M. 1; Affiliation: 1: Materials Chemistry, RWTH Aachen University, Kopernikusstr. 16, D-52074 Aachen, Germany 2: Department of Physics, Condensed Matter Theory Group, Uppsala University, Box 530, S-751 21 Uppsala, Sweden 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH 45433, USA; Source Info: Jul2006, Vol. 139 Issue 4, p139; Subject Term: CONDUCTION electrons; Subject Term: PARTICLES (Nuclear physics); Subject Term: ELECTRONIC structure; Subject Term: CARBON compounds; Author-Supplied Keyword: A. M2AlC phases; Author-Supplied Keyword: C. Shearing; Author-Supplied Keyword: D. Ab initio calculations; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.ssc.2006.06.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21752189&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baily, S.A. AU - Emin, David AU - Li, Heng T1 - Hall mobility of amorphous Ge2Sb2Te5 JO - Solid State Communications JF - Solid State Communications Y1 - 2006/07/22/ VL - 139 IS - 4 M3 - Article SP - 161 EP - 164 SN - 00381098 AB - Abstract: The electrical conductivity, Seebeck coefficient, and Hall coefficient of three-micron-thick films of amorphous Ge2Sb2Te5 have been measured as functions of temperature from room temperature down to as low as 200 K. The electrical conductivity manifests an Arrhenius behavior. The Seebeck coefficient is p-type with behavior indicative of multi-band transport. The Hall mobility is n-type and low (near 0.07 cm2/V s at room temperature). [Copyright &y& Elsevier] AB - Copyright of Solid State Communications is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC currents KW - MAGNETIC fields KW - SURFACES (Technology) KW - THIN films KW - A. Disordered systems KW - B. Galvanomagnetic effects N1 - Accession Number: 21752194; Baily, S.A. 1; Email Address: sbaily@unm.edu Emin, David 2 Li, Heng 3; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117, United States 2: Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, United States 3: Department of Physics, University of Utah, Salt Lake City, UT 84112-0830, United States; Source Info: Jul2006, Vol. 139 Issue 4, p161; Subject Term: ELECTRIC currents; Subject Term: MAGNETIC fields; Subject Term: SURFACES (Technology); Subject Term: THIN films; Author-Supplied Keyword: A. Disordered systems; Author-Supplied Keyword: B. Galvanomagnetic effects; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.ssc.2006.05.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21752194&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sabelkin, V. AU - Mall, S. AU - Avram, J.B. T1 - Fatigue crack growth analysis of stiffened cracked panel repaired with bonded composite patch JO - Engineering Fracture Mechanics JF - Engineering Fracture Mechanics Y1 - 2006/07/15/ VL - 73 IS - 11 M3 - Article SP - 1553 EP - 1567 SN - 00137944 AB - Abstract: Fatigue crack growth behavior in a stiffened thin 2024-T3 aluminum panel repaired with one-sided adhesively bonded composite patch was investigated through experiments and analyses. The patch had three plies of unidirectional boron/epoxy composite. 2024-T3 aluminum stiffeners were riveted as well as bonded on the panel. Stiffeners were oriented in the loading direction and were spaced at either 102mm or 152mm with a crack centered between them. Also, un-repaired cracked panel with and without stiffeners were studied. Experiment involved tension–tension fatigue at constant amplitude with maximum stress of 120MPa and stress ratio of 0.05. Bonded composite patch repair increased fatigue life about five-fold in the case of stiffened panels while it increased about ten fold in the case of un-stiffened panels. Fatigue life also increased with decrease of the distance between the stiffeners for both repaired and un-repaired panels. A three-dimensional finite element method was used to analyze the experiments. Residual thermal stresses, developed during patch bonding, requires the knowledge of temperature at which adhesive becomes effective in creating a bond between the structure and patch in the analysis. A simple method to estimate the effective curing temperature range is suggested in this study. The computed stress intensity factor versus measured crack growth relationships for all panel configurations were consistent and in agreement with the counterpart from the test material. Thus, the present approach provides a means to analyze the fatigue crack growth behavior of stiffened structures repaired with adhesively bonded composite patch. [Copyright &y& Elsevier] AB - Copyright of Engineering Fracture Mechanics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FINITE element method KW - ALUMINUM alloys KW - NUMERICAL analysis KW - THERMOELASTICITY KW - Aluminum alloy KW - Bonded composite patch KW - Cracked stiffened plate KW - Fatigue crack growth KW - Finite element analysis KW - Patch repair N1 - Accession Number: 20889495; Sabelkin, V. 1 Mall, S. 1; Email Address: Shankar.Mall@afit.edu Avram, J.B. 2; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson Air Force Base, Bldg. 640, 2950 Hobson Way, OH 45433-7765, United States 2: US Air Force Academy, USAFA, CO 80840, United States; Source Info: Jul2006, Vol. 73 Issue 11, p1553; Subject Term: FINITE element method; Subject Term: ALUMINUM alloys; Subject Term: NUMERICAL analysis; Subject Term: THERMOELASTICITY; Author-Supplied Keyword: Aluminum alloy; Author-Supplied Keyword: Bonded composite patch; Author-Supplied Keyword: Cracked stiffened plate; Author-Supplied Keyword: Fatigue crack growth; Author-Supplied Keyword: Finite element analysis; Author-Supplied Keyword: Patch repair; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.engfracmech.2006.01.029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20889495&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parra, F. I. AU - Ahedo, E. AU - Fife, J. M. AU - Martínez-Sánchez, M. T1 - A two-dimensional hybrid model of the Hall thruster discharge. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2006/07/15/ VL - 100 IS - 2 M3 - Article SP - 023304 PB - American Institute of Physics SN - 00218979 AB - Particle-in-cell methods are used for ions and neutrals. Probabilistic methods are implemented for ionization, charge-exchange collisions, gas injection, and particle-wall interaction. A diffusive macroscopic model is proposed for the strongly magnetized electron population. Cross-field electron transport includes wall collisionality and Bohm-type diffusion, the last one dominating in most of the discharge. Plasma quasineutrality applies except for space-charge sheaths, which are modeled taking into consideration secondary-electron-emission and space-charge saturation. Specific weighting algorithms are developed in order to fulfil the Bohm condition on the ion flow at the boundaries of the quasineutral domain. The consequence is the full development of the radial plasma structure and correct values for ion losses at lateral walls. The model gains in insight and physical consistency over a previous version, but thrust efficiency is lower than in experiments, indicating that further model refinement of some phenomena is necessary. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONIZATION (Atomic physics) KW - IONS KW - RESEARCH KW - ELECTRON transport KW - MAGNETIZATION KW - DIFFUSION KW - ELECTRON emission N1 - Accession Number: 21845609; Parra, F. I. 1,2; Email Address: fparra@mit.edu Ahedo, E. 1; Email Address: eduardo.ahedo@upm.es Fife, J. M. 3; Email Address: mfife@exponent.com Martínez-Sánchez, M. 4; Email Address: mmart@mit.edu; Affiliation: 1: Escuela Técnica Superior de Ingenieros Aeronáuticos, Universidad Politécnica de Madrid, Plaza Cardenal Cisneros, 28040 Madrid, Spain 2: Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, 77 Massachusetts Av., 02139 Cambridge 3: Air Force Research Laboratory, 1 Ara Road, Edwards AFB, California 94025 4: Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge 02139; Source Info: 7/15/2006, Vol. 100 Issue 2, p023304; Subject Term: IONIZATION (Atomic physics); Subject Term: IONS; Subject Term: RESEARCH; Subject Term: ELECTRON transport; Subject Term: MAGNETIZATION; Subject Term: DIFFUSION; Subject Term: ELECTRON emission; Number of Pages: 11p; Illustrations: 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1063/1.2219165 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21845609&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Singh, Birendra AU - Sariciftci, Niyazi Serdar AU - Grote, James G. AU - Hopkins, Frank K. T1 - Bio-organic-semiconductor-field-effect-transistor based on deoxyribonucleic acid gate dielectric. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2006/07/15/ VL - 100 IS - 2 M3 - Article SP - 024514 PB - American Institute of Physics SN - 00218979 AB - Organic-based field-effect transistors (OFETs) utilize organic semiconductor materials with low electron mobilities and organic gate oxide materials with low dielectric constants. These have rendered devices with slow operating speeds and high operating voltages, compared with their inorganic silicon-based counter parts. Using a deoxyribonucleic acid (DNA)-based biopolymer, derived from salmon milt and roe sac waste by-products, for the gate dielectric region, we have fabricated an OFET device that exhibits very promising current-voltage characteristics compared with using other organic-based dielectrics. With minimal optimization, using a thin film of DNA-based biopolymer as the gate insulator and pentacene as the semiconductor, we have demonstrated a bio-organic-FET, or BiOFET, in which the current was modulated over three orders of magnitude using gate voltages less than 10 V. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIELD-effect transistors KW - DNA KW - DEOXYRIBOSE KW - DIELECTRICS KW - SEMICONDUCTORS KW - ELECTRIC conductivity N1 - Accession Number: 21845579; Singh, Birendra 1 Sariciftci, Niyazi Serdar 1 Grote, James G. 2; Email Address: james.grote@wpafb.af.mil Hopkins, Frank K. 2; Affiliation: 1: Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University of Linz, A-4040 Linz, Austria 2: Air Force Research Laboratory, Materials & Manufacturing Directorate, AFRL/MLPS, 3005 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433-7707; Source Info: 7/15/2006, Vol. 100 Issue 2, p024514; Subject Term: FIELD-effect transistors; Subject Term: DNA; Subject Term: DEOXYRIBOSE; Subject Term: DIELECTRICS; Subject Term: SEMICONDUCTORS; Subject Term: ELECTRIC conductivity; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 4p; Illustrations: 2 Color Photographs, 2 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.2220488 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21845579&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cai, D. AU - Zheng, L.L. AU - Zhang, H. AU - Tassev, V.L. AU - Bliss, D.F. T1 - Modeling of gas phase and surface reactions in an aluminum nitride growth system JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2006/07/15/ VL - 293 IS - 1 M3 - Article SP - 136 EP - 145 SN - 00220248 AB - Abstract: This paper presents systematic study of an improved vapor-phase expitaxy system—a halide vapor transport epitaxy (HVTE) system [D.F. Bliss, V.L. Tassev, D. Weyburne, J.S. Bailey, J. Crystal Growth 250 (2003) 1]. A numerical model has been developed, which is capable of describing multi-component fluid flow, gas/surface chemistry, conjugate heat transfer, and species transport, and it has been applied to the HVTE system for optimal design. The investigation has been conducted to study the effects of the gas-phase reactions, the reactor wall deposition, the adduct boat and the three-zone furnace temperature, the carrier gas flow rate and the distance between the adduct boat and the substrate on the aluminum nitride deposition rate/deposition uniformity. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM nitride KW - CRYSTAL growth KW - TWINNING (Crystallography) KW - SURFACE tension KW - A1. Computer simulation KW - A1. Gas-phase reaction KW - A1. Halide vapor transport epitaxy reactor KW - A3. Chemical vapor deposition process KW - B2. Semiconducting aluminum nitride N1 - Accession Number: 21667156; Cai, D. 1; Email Address: dcai@ic.sunysb.edu Zheng, L.L. 1 Zhang, H. 1 Tassev, V.L. 2 Bliss, D.F. 3; Affiliation: 1: Department of Mechanical Engineering, Stony Brook University, NY 11790, USA 2: Solid State Scientific Corporation, Hollis, NH 03049, USA 3: Air Force Research Laboratory, Hanscom AFB, MA 01732, USA; Source Info: Jul2006, Vol. 293 Issue 1, p136; Subject Term: ALUMINUM nitride; Subject Term: CRYSTAL growth; Subject Term: TWINNING (Crystallography); Subject Term: SURFACE tension; Author-Supplied Keyword: A1. Computer simulation; Author-Supplied Keyword: A1. Gas-phase reaction; Author-Supplied Keyword: A1. Halide vapor transport epitaxy reactor; Author-Supplied Keyword: A3. Chemical vapor deposition process; Author-Supplied Keyword: B2. Semiconducting aluminum nitride; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.jcrysgro.2006.04.093 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21667156&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dwyer, C. AU - Ziegler, A. AU - Shibata, N. AU - Winkelman, G. B. AU - Satet, R. L. AU - Hoffmann, M. J. AU - Cinibulk, M. K. AU - Becher, P. F. AU - Painter, G. S. AU - Browning, N. D. AU - Cockayne, D. J. H. AU - Ritchie, R. O. AU - Pennycook, S. J. T1 - Interfacial structure in silicon nitride sintered with lanthanide oxide. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2006/07/15/ VL - 41 IS - 14 M3 - Article SP - 4405 EP - 4412 PB - Springer Science & Business Media B.V. SN - 00222461 AB - Three independent research groups present a comparison of their structural analyses of prismatic interfaces in silicon nitride densified with the aid of lanthanide oxide Ln2O3. All three groups obtained scanning transmission electron microscope images which clearly reveal the presence of well-defined Ln segregation sites at the interfaces, and, moreover, reveal that these segregation sites are element-specific. While some results differ across the three research groups, the vast majority exhibits good reproducibility. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON nitride KW - RARE earth metals KW - SCANNING transmission electron microscopy KW - NITRIDES KW - NONFERROUS metals KW - SILICON compounds N1 - Accession Number: 21887704; Dwyer, C. 1; Email Address: dwyer@materials.ox.ac.uk Ziegler, A. 2 Shibata, N. 3 Winkelman, G. B. 1 Satet, R. L. 4 Hoffmann, M. J. 4 Cinibulk, M. K. 5 Becher, P. F. 6 Painter, G. S. 6 Browning, N. D. 2,7 Cockayne, D. J. H. 1 Ritchie, R. O. 2,8 Pennycook, S. J. 7,9; Affiliation: 1: Department of Materials, University of Oxford, Oxford OX1 3PH, UK. 2: Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA. 3: Institute for Engineering Innovation, University of Tokyo, Yayoi, Tokyo 113-8656, Japan. 4: Institut für Keramik im Maschinenbau, Universität Karlsruhe, Haid-und-Neu-Strasse 7, D-76131 Karlsruhe, Germany. 5: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA. 6: Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA. 7: Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, USA. 8: Department of Materials Science and Engineering, University of California Berkeley, Berkeley, California 94720, USA. 9: Condensed Matter Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.; Source Info: Jul2006, Vol. 41 Issue 14, p4405; Subject Term: SILICON nitride; Subject Term: RARE earth metals; Subject Term: SCANNING transmission electron microscopy; Subject Term: NITRIDES; Subject Term: NONFERROUS metals; Subject Term: SILICON compounds; NAICS/Industry Codes: 331491 Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 8p; Illustrations: 1 Color Photograph, 2 Black and White Photographs, 1 Graph; Document Type: Article L3 - 10.1007/s10853-006-0152-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21887704&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abel I. Fernandez AU - A. A. Viggiano AU - J. Troe T1 - Two-Channel Dissociation of Chemically and Thermally Activated n-Butylbenzene Cations (C10H14). JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2006/07/13/ VL - 110 IS - 27 M3 - Article SP - 8467 EP - 8476 SN - 10895639 AB - The charge-transfer reaction O2n-butylbenzene (C10H14) → O2 C10H14 was studied in a turbulent ion flow tube at temperatures between 423 and 548 K and pressures between 15 and 250 Torr in the buffer gases He and N2. Under chemical activation conditions stabilization vs dissociation ratios S/Dof vibrationally highly excited C10H14 as well as branching ratios of the fragments C7H7(m/z 91) vs C7H8(m/z 92) of the dissociation of C10H14 were measured. Under thermal activation conditions, the rate constant of the dominating dissociation channel 92 was measured at 498 and 523 K. Employing information on the specific rate constants k(E) of the two channels 91 and 92 and on collisional energy transfer rates from the literature, the measured S/Dcurves and branching ratios 91/92 could be modeled well. It is demonstrated that the charge transfer occurs approximately equally through resonant transfer and complex-forming transfer. The thermal dissociation experiments provide a high precision value of the energy barrier for the channel 92, being 1.14 (±0.02) eV. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHARGE transfer KW - ACTIVATION (Chemistry) KW - DISSOCIATION (Chemistry) KW - ORGANIC compounds N1 - Accession Number: 21811682; Abel I. Fernandez 1 A. A. Viggiano 1 J. Troe 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Rd., Hanscom AFB,Massachusetts 01731-3010, and Institute for Physical Chemistry, University of Goettingen, Tammannstrasse 6,D-37077 Goettingen, Germany; Source Info: Jul2006, Vol. 110 Issue 27, p8467; Subject Term: CHARGE transfer; Subject Term: ACTIVATION (Chemistry); Subject Term: DISSOCIATION (Chemistry); Subject Term: ORGANIC compounds; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21811682&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Putthanarat, S. AU - Eby, R.K. AU - Kataphinan, W. AU - Jones, S. AU - Naik, R. AU - Reneker, D.H. AU - Farmer, B.L. T1 - Electrospun Bombyx mori gland silk JO - Polymer JF - Polymer Y1 - 2006/07/12/ VL - 47 IS - 15 M3 - Article SP - 5630 EP - 5632 SN - 00323861 AB - Abstract: Solutions of Bombyx mori gland silk can be electrospun with the addition of some polyethylene oxide (PEO). Green fluorescent protein (GFP) can also be incorporated and electrospun without apparent phase separation from the silk. The dimensions of the fibers with and without the GFP are qualitatively similar. The results indicate the possibility of making fibers with uniform non-linear optical properties. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILKWORMS KW - POLYETHYLENE oxide KW - FLOCCULANTS KW - POLYETHYLENE KW - THERMOPLASTICS KW - Electrospun gland silk KW - GFP KW - Non-linear optical properties N1 - Accession Number: 21576997; Putthanarat, S. 1 Eby, R.K. 1; Email Address: reby@uakron.edu Kataphinan, W. 1 Jones, S. 2 Naik, R. 3 Reneker, D.H. 1 Farmer, B.L. 3; Affiliation: 1: Department and Institute of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA 2: UES Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, OH 45433, USA; Source Info: Jul2006, Vol. 47 Issue 15, p5630; Subject Term: SILKWORMS; Subject Term: POLYETHYLENE oxide; Subject Term: FLOCCULANTS; Subject Term: POLYETHYLENE; Subject Term: THERMOPLASTICS; Author-Supplied Keyword: Electrospun gland silk; Author-Supplied Keyword: GFP; Author-Supplied Keyword: Non-linear optical properties; NAICS/Industry Codes: 112999 All other miscellaneous animal production; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.polymer.2005.06.130 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21576997&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bogdanov, E. A. AU - DeJoseph Jr., C. A. AU - Demidov, V. I. AU - Kudryavtsev, A. A. T1 - Effect of electron detachment on the wall potential and plasma evolution in the afterglow stage. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/07/10/ VL - 89 IS - 2 M3 - Article SP - 021501 PB - American Institute of Physics SN - 00036951 AB - It is demonstrated that detachment of electrons in the afterglow of an electronegative plasma can lead to a significant increase in negative wall potential with respect to the plasma potential. This effect can be used to modify the near-wall sheath electric field and thickness, which are important for plasma processing applications. Also in the afterglow, this effect can lead to an increase in electron density with time, and a reduction (up to total exclusion) in diffusion cooling of electrons and can thus be used to modify the electron temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - ELECTRON distribution KW - PLASMA (Ionized gases) KW - PLASMA chemistry KW - DIFFUSION KW - ELECTRON temperature N1 - Accession Number: 21695406; Bogdanov, E. A. 1 DeJoseph Jr., C. A. 2; Email Address: charles.dejoseph@wpafb.af.mil Demidov, V. I. 3 Kudryavtsev, A. A. 4; Affiliation: 1: St. Petersburg State University, St. Petersburg 198904, Russia 2: Air Force Research Laboratory, Wright-Patterson AFB, Dayton, Ohio 45433 3: UES, Inc., 4401 Dayton-Xenia Road, Dayton, Ohio 45432 4: Department of Optics and Spectroscopy, St. Petersburg State University, St. Petersburg 198904, Russia; Source Info: 7/10/2006, Vol. 89 Issue 2, p021501; Subject Term: ELECTRONS; Subject Term: ELECTRON distribution; Subject Term: PLASMA (Ionized gases); Subject Term: PLASMA chemistry; Subject Term: DIFFUSION; Subject Term: ELECTRON temperature; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.2220005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21695406&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yongchun Zhong AU - Kam Sing Wong AU - Weili Zhang AU - Look, D. C. T1 - Radiative recombination and ultralong exciton photoluminescence lifetime in GaN freestanding film via two-photon excitation. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/07/10/ VL - 89 IS - 2 M3 - Article SP - 022108 PB - American Institute of Physics SN - 00036951 AB - We have measured the photoluminescence (PL) lifetime of a freestanding GaN film using one-photon and two-photon excitations to demonstrate the dramatic difference in exciton recombination dynamics at the surface and in the bulk. An ultralong exciton PL lifetime of 17.2 ns at 295 K is observed from a GaN freestanding film using two-photon excitation, whereas less than 100 ps lifetime is observed for one-photon excitation, suggesting that nonradiative processes from surface defects account for the short PL lifetime measured. A monotonic increase in two-photon excited PL lifetime with increasing temperature and the linear dependence of the exciton lifetime with emission wavelength show good agreement with the theoretical predictions, indicating that radiative recombination dominates for bulk excited state relaxation processes. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOLUMINESCENCE KW - RADIATIVE transitions KW - PHOTONS KW - ORGANOMETALLIC compounds KW - WAVELENGTHS KW - LUMINESCENCE KW - PHYSICS N1 - Accession Number: 21695413; Yongchun Zhong 1 Kam Sing Wong 1; Email Address: phkswong@ust.hk Weili Zhang 2 Look, D. C. 3,4; Affiliation: 1: Department of Physics, Hong Kong University of Science and Technology, Kowloon, Hong Kong, People's Republic of China 2: School of Electrical and Computer Engineering, Oklahoma State University, Oklahoma 74078 3: Semiconductor Research Center, Wright State University, Dayton, Ohio 45435 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433; Source Info: 7/10/2006, Vol. 89 Issue 2, p022108; Subject Term: PHOTOLUMINESCENCE; Subject Term: RADIATIVE transitions; Subject Term: PHOTONS; Subject Term: ORGANOMETALLIC compounds; Subject Term: WAVELENGTHS; Subject Term: LUMINESCENCE; Subject Term: PHYSICS; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.2219399 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21695413&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Siefert, Nicholas S. AU - Sands, Brian L. AU - Ganguly, Biswa N. T1 - Electron and metastable state interactions in two-step ionization waves. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/07/03/ VL - 89 IS - 1 M3 - Article SP - 011502 PB - American Institute of Physics SN - 00036951 AB - We demonstrate the use of a microwave hairpin resonator to measure the time-dependent, phase-resolved electron number density in ionization waves. Under our argon glow discharge conditions, the instability was caused by two-step ionization; and the wave frequency depended on the volume quenching rate of the metastable states. We measured the 1s5 metastable state density using diode laser absorption. The peak electron number density lagged behind the peak metastable state density by 60°. This phase shift reveals the nonlocal nature of the electron kinetics due to two-step ionization. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONIZATION (Atomic physics) KW - ELECTRONS KW - MICROWAVES KW - RESONATORS KW - ELECTRON distribution KW - GLOW discharges KW - ARGON N1 - Accession Number: 21602100; Siefert, Nicholas S. 1; Email Address: nicholas.siefert@gmail.com Sands, Brian L. 1,2 Ganguly, Biswa N. 1; Affiliation: 1: Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433 2: UES, Inc., Dayton, OH 45432.; Source Info: 7/3/2006, Vol. 89 Issue 1, p011502; Subject Term: IONIZATION (Atomic physics); Subject Term: ELECTRONS; Subject Term: MICROWAVES; Subject Term: RESONATORS; Subject Term: ELECTRON distribution; Subject Term: GLOW discharges; Subject Term: ARGON; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.2219982 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21602100&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barnes, P. N. AU - Kell, J. W. AU - Harrison, B. C. AU - Haugan, T. J. AU - Varanasi, C. V. AU - Rane, M. AU - Ramos, F. T1 - Minute doping with deleterious rare earths in YBa2Cu3O7-δ films for flux pinning enhancements. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/07/03/ VL - 89 IS - 1 M3 - Article SP - 012503 PB - American Institute of Physics SN - 00036951 AB - To enhance the critical current density of YBa2Cu3O7-δ films, flux pinning centers are intentionally added to inhibit flux flow in applied magnetic fields. Here we provide an initial demonstration that the incorporation of very minor additions (<=1% of Y as opposed to the 10%–40% in standard substitutions) of typically deleterious rare earths into high quality YBa2Cu3O7-δ thin films provides significant improvement of the film’s in-field current density. This is accomplished without reoptimization of the deposition parameters. Instead of site substitution for Y as might be expected, the deleterious rare earths potentially result in the formation of nanoparticulates. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COPPER oxide superconductors KW - BARIUM compounds KW - CRITICAL currents KW - MAGNETIC fields KW - THIN films N1 - Accession Number: 21602142; Barnes, P. N. 1; Email Address: paul.barnes@wpafb.af.mil Kell, J. W. 1 Harrison, B. C. 1 Haugan, T. J. 1 Varanasi, C. V. 2 Rane, M. 3 Ramos, F. 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7919 2: University of Dayton Research Institute, Dayton, Ohio 45469-1390 3: College of NanoScale Science and Engineering, Albany, New York 12203; Source Info: 7/3/2006, Vol. 89 Issue 1, p012503; Subject Term: COPPER oxide superconductors; Subject Term: BARIUM compounds; Subject Term: CRITICAL currents; Subject Term: MAGNETIC fields; Subject Term: THIN films; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 3p; Illustrations: 1 Black and White Photograph, 3 Graphs; Document Type: Article L3 - 10.1063/1.2219391 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21602142&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Levin, G. A. AU - Barnes, P. N. AU - Kell, J. W. AU - Amemiya, N. AU - Jiang, Z. AU - Yoda, K. AU - Kimura, F. T1 - Multifilament YBa2Cu3O6+x-coated conductors with minimized coupling losses. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/07/03/ VL - 89 IS - 1 M3 - Article SP - 012506 PB - American Institute of Physics SN - 00036951 AB - We report an experimental approach to making multifilament coated conductors with low losses in applied time-varying magnetic field. Previously, the multifilament conductors obtained for that purpose by laser ablation suffered from high coupling losses. Here we report how this problem can be solved. When the substrate metal in the grooves segregating the filaments is exposed to oxygen, it forms high resistivity oxides that electrically insulate the stripes from each other and from the substrate. As the result, the coupling loss has become negligible over the entire range of tested parameters (magnetic field amplitudes B and frequencies f). [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COPPER oxide superconductors KW - YTTRIUM KW - HIGH temperature superconductors KW - LASER ablation KW - MAGNETIC fields N1 - Accession Number: 21602115; Levin, G. A. 1; Email Address: george.levin@wpafb.af.mil Barnes, P. N. 1 Kell, J. W. 1 Amemiya, N. 2 Jiang, Z. 2 Yoda, K. 2 Kimura, F. 2; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, 1950 Fifth Street, Building 450, Wright-Patterson Air Force Base, Ohio 45433 2: Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya, Yokohama 240-8501, Japan; Source Info: 7/3/2006, Vol. 89 Issue 1, p012506; Subject Term: COPPER oxide superconductors; Subject Term: YTTRIUM; Subject Term: HIGH temperature superconductors; Subject Term: LASER ablation; Subject Term: MAGNETIC fields; Number of Pages: 3p; Illustrations: 1 Black and White Photograph, 2 Graphs; Document Type: Article L3 - 10.1063/1.2219393 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21602115&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lukovic, Bojan AU - Orkwis, Paul D. AU - Turner, Mark G. AU - Sekar, Balu T1 - Neural Network Modeling of Deterministic Unsteadiness Source Terms. JO - AIAA Journal JF - AIAA Journal Y1 - 2006/07// VL - 44 IS - 7 M3 - Article SP - 1609 SN - 00011452 AB - A neural-network-based lumped deterministic source term technique is presented that results in the prediction of an approximate time-average solution when used to modify a steady-state solver. Three different neural networks are developed for simple cavity flows using Mach number, cavity length-to-depth ratio, and aft wall translation as parameters. The results indicate that axial force data can be reproduced with less than 15% error as compared to the time average of a fully unsteady calculation. Computation times for the resultant neural network lumped deterministic source term approach were up to two orders of magnitude less than the comparable unsteady solution and were essentially identical to that of a steady-state calculation, although it must be noted that a database of unsteady calculations is required to develop the technique. The lumped deterministic source terms did not appear to affect the robustness of the steady-state solver adversely. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEURAL networks (Computer science) KW - MACH number KW - DATABASES KW - ROBUST control KW - AERODYNAMICS N1 - Accession Number: 21535998; Lukovic, Bojan 1; Email Address: Bojan.Lukovic@UC.Edu Orkwis, Paul D. 2,3; Email Address: Paul.Orkwis@UC.Edu Turner, Mark G. 3,4; Email Address: Mark.Turner@UC.Edu Sekar, Balu 3,5; Email Address: Balu.Sekar@wpafb.af.mi; Affiliation: 1: Graduate Research Assistant, ML70, Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati, Cincinnati, Ohio 45221-0070 2: Professor and Director of Graduate Studies, ML 70, Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati, Cincinnati, Ohio 45221-0070 3: Associate Fellow, AIAA 4: Professor, ML 70, Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati, Cincinnati, Ohio 45221-0070 5: Aerospace Engineer, Propulsion Directorate, Turbine Engine Division, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Room D026, Building 18, 1950 Fifth Street, Ohio 45433-7251; Source Info: Jul2006, Vol. 44 Issue 7, p1609; Subject Term: NEURAL networks (Computer science); Subject Term: MACH number; Subject Term: DATABASES; Subject Term: ROBUST control; Subject Term: AERODYNAMICS; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21535998&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mayfield, Howard T. AU - Burr, Eila AU - Cantrell, Marlene T1 - Analysis of Explosives in Soil Using Solid Phase Microextraction and Gas Chromatography. JO - Analytical Letters JF - Analytical Letters Y1 - 2006/07// VL - 39 IS - 7 M3 - Article SP - 1463 EP - 1474 PB - Taylor & Francis Ltd SN - 00032719 AB - Current methods for the analysis of explosives in soils utilize time consuming sample preparation workups and extractions. The method detection limits for EPA Method 8330 for most analytes is substantially higher than the typical explosive concentrations encountered in soils near unexploded ordnance items, landmines, or other hidden explosive devices. It is desirable to develop new analytical techniques to analyze soil with low concentrations of explosives to support the development of explosive sensors. This report describes efforts to adapt headspace solid phase extraction and gas chromatography/mass spectrometry to provide a convenient and sensitive analysis method for explosives in soil. [ABSTRACT FROM AUTHOR] AB - Copyright of Analytical Letters is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXPLOSIVES detection KW - MASS spectrometry KW - CHROMATOGRAPHIC analysis KW - LAND mines KW - SOLID phase extraction KW - EXTRACTION (Chemistry) KW - Explosives KW - gas chromatography KW - gas chromatography/mass spectrometry KW - solid phase microextraction KW - TNT N1 - Accession Number: 21007769; Mayfield, Howard T. 1; Email Address: howard.mayfield@tyndall.af.mil Burr, Eila 2 Cantrell, Marlene 2; Affiliation: 1: Air Force Research Laboratory, Airbase Technologies Division, Tyndall AFB, FL, USA 2: Applied Research Associates, Tyndall AFB, FL, USA; Source Info: 2006, Vol. 39 Issue 7, p1463; Subject Term: EXPLOSIVES detection; Subject Term: MASS spectrometry; Subject Term: CHROMATOGRAPHIC analysis; Subject Term: LAND mines; Subject Term: SOLID phase extraction; Subject Term: EXTRACTION (Chemistry); Author-Supplied Keyword: Explosives; Author-Supplied Keyword: gas chromatography; Author-Supplied Keyword: gas chromatography/mass spectrometry; Author-Supplied Keyword: solid phase microextraction; Author-Supplied Keyword: TNT; Number of Pages: 12p; Illustrations: 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1080/00032710600669358 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21007769&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boff, Kenneth R. T1 - Revolutions and shifting paradigms in human factors & ergonomics JO - Applied Ergonomics JF - Applied Ergonomics Y1 - 2006/07// VL - 37 IS - 4 M3 - Article SP - 391 EP - 399 SN - 00036870 AB - Abstract: The “Revolution in Information Technology” has spawned a series of transformational revolutions in the nature and practice of human factors and ergonomics (HFE). “Generation 1” HFE evolved with a focus on adapting equipment, workplace and tasks to human capabilities and limitations. Generation 2, focused on cognitive systems integration, arose in response to the need to manage automation and dynamic function allocation. Generation 3 is focused on symbiotic technologies that can amplify human physical and cognitive capabilities. Generation 4 is emergent and is focused on biological enhancement of physical or cognitive capabilities. The shift from HFE Generations 1 and 2 to Generations 3 and 4 profoundly alters accepted boundary constraints on the adaptability of humans in complex systems design. Furthermore, it has opened an ethical divide between those that see cognitive and physical enhancement as a great benefit to society and those who perceive this as tampering with the fundamentals of human nature. [Copyright &y& Elsevier] AB - Copyright of Applied Ergonomics is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFORMATION technology KW - ERGONOMICS KW - COGNITIVE ability KW - SYMBIOSIS (Psychology) KW - Cognitive enhancement KW - Human effectiveness N1 - Accession Number: 21189788; Boff, Kenneth R. 1; Email Address: ktalk11@mac.com; Affiliation: 1: Air Force Research Laboratory/Human Effectiveness (AFRL/HE), 2610 Seventh Street, Bld 441, Wright-Patterson AFB, OH 45433-7901, USA; Source Info: Jul2006, Vol. 37 Issue 4, p391; Subject Term: INFORMATION technology; Subject Term: ERGONOMICS; Subject Term: COGNITIVE ability; Subject Term: SYMBIOSIS (Psychology); Author-Supplied Keyword: Cognitive enhancement; Author-Supplied Keyword: Human effectiveness; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.apergo.2006.04.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21189788&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Southby, H. Veronica T1 - A Personal Reflection. JO - Dimensions of Critical Care Nursing JF - Dimensions of Critical Care Nursing Y1 - 2006/07//Jul/Aug2006 VL - 25 IS - 4 M3 - Article SP - 172 EP - 174 PB - Lippincott Williams & Wilkins SN - 07304625 AB - The article presents the author's experience about how he saved a 10-month-old infant by music therapy. The baby was a female Eskimo, who had come from Alaska for Extra Corporeal Membrane Oxygenator therapy. She was admitted in the Pediatric Intensive Care Unit (PICU). The author visited her, and sang songs for her. She started responding to the songs. According to the author, for effective music therapy in PICU, the songs should be sweet and simple, and should have a pleasing melody. KW - MUSIC therapy KW - PEDIATRIC intensive care KW - INTENSIVE care units KW - INFANTS KW - EXTRACORPOREAL membrane oxygenation KW - SONGS KW - MELODY N1 - Accession Number: 21922938; Southby, H. Veronica 1; Email Address: HeatherVeronica.Southby@lackland.AF.Mil; Affiliation: 1: Major, United States Air Force and Nurse Manager, Surgical/Trauma Intensive Care Unit, Wilford Hall Medical Center, Lackland AFB, TX; Source Info: Jul/Aug2006, Vol. 25 Issue 4, p172; Subject Term: MUSIC therapy; Subject Term: PEDIATRIC intensive care; Subject Term: INTENSIVE care units; Subject Term: INFANTS; Subject Term: EXTRACORPOREAL membrane oxygenation; Subject Term: SONGS; Subject Term: MELODY; Number of Pages: 3p; Document Type: Article; Full Text Word Count: 2277 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21922938&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, J. AU - Spowart, J. E. AU - Jones, J. W. T1 - Fatigue behaviour of SiCp-reinforced aluminium composites in the very high cycle regime using ultrasonic fatigue. JO - Fatigue & Fracture of Engineering Materials & Structures JF - Fatigue & Fracture of Engineering Materials & Structures Y1 - 2006/07// VL - 29 IS - 7 M3 - Article SP - 507 EP - 517 PB - Wiley-Blackwell SN - 8756758X AB - The fatigue behaviour of a 2009/SiC/15p-T4 DRA composite has been examined in the very high cycle fatigue (VHCF) regime where 107≤ Nf≤ 109 cycles. Ultrasonic fatigue was used to achieve the very high cycle counts. Careful processing yielded a composite with a very homogeneous particle distribution with minimal clustering. Fatigue crack initiation was observed almost exclusively at AlCuFe inclusions with no crack initiation observed at SiC particle clusters. Fatigue lives at a given stress level exhibited minimal scatter and subsurface crack initiation was observed in all cases. This behaviour is consistent with the presence of a low number density of critical inclusions that are responsible for crack initiation very early in fatigue life. [ABSTRACT FROM AUTHOR] AB - Copyright of Fatigue & Fracture of Engineering Materials & Structures is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON carbide KW - ALUMINUM KW - COMPOSITE materials KW - MATERIALS -- Fatigue KW - STRAINS & stresses (Mechanics) KW - DENSITY KW - critical number density of inclusions KW - discontinuously reinforced aluminium composite KW - subsurface crack initiation KW - ultrasonic fatigue KW - very high cycle fatigue N1 - Accession Number: 21124118; Huang, J. 1 Spowart, J. E. 2 Jones, J. W. 1; Email Address: jonesjwa@engin.umich.edu; Affiliation: 1: Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio, USA; Source Info: Jul2006, Vol. 29 Issue 7, p507; Subject Term: SILICON carbide; Subject Term: ALUMINUM; Subject Term: COMPOSITE materials; Subject Term: MATERIALS -- Fatigue; Subject Term: STRAINS & stresses (Mechanics); Subject Term: DENSITY; Author-Supplied Keyword: critical number density of inclusions; Author-Supplied Keyword: discontinuously reinforced aluminium composite; Author-Supplied Keyword: subsurface crack initiation; Author-Supplied Keyword: ultrasonic fatigue; Author-Supplied Keyword: very high cycle fatigue; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 11p; Illustrations: 5 Black and White Photographs, 2 Diagrams, 2 Charts, 5 Graphs; Document Type: Article L3 - 10.1111/j.1460-2695.2006.00998.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21124118&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morton, Thomas E. AU - Pasala, Krishna M. T1 - Performance Analysis of Conformal Conical Arrays for Airborne Vehicles. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2006/07// VL - 42 IS - 3 M3 - Article SP - 876 EP - 890 SN - 00189251 AB - Conformal array apertures have great potential for providing high performance, low weight systems with little or no impact to the aerodynamic design of the air vehicle. A performance analysis of conformal conical arrays for a national airborne radar application is presented. The conical array geometry is chosen for its similarity to an aircraft or missile nosecone. Performance capabilities are analyzed for a number of antenna performance parameters including scan volume, sidelobe levels, grating lobes, beamwidth, directivity, element count, and cross-polarization. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC systems KW - RADAR in aeronautics KW - RADAR KW - AERONAUTICS KW - ELECTRONIC apparatus & appliances KW - ELECTRONICS N1 - Accession Number: 23333563; Morton, Thomas E. 1; Email Address: thomas.morton@wpafb.af.mil Pasala, Krishna M. 2; Affiliation: 1: United States Air Force Research Laboratory, 2241 Avionics Circle, Wright-Patterson AFB, OH 45433-7333. 2: University of Dayton, 300 College Park, Dayton, OH 45469-0226.; Source Info: Jul2006, Vol. 42 Issue 3, p876; Subject Term: ELECTRONIC systems; Subject Term: RADAR in aeronautics; Subject Term: RADAR; Subject Term: AERONAUTICS; Subject Term: ELECTRONIC apparatus & appliances; Subject Term: ELECTRONICS; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 15p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23333563&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blunt, Shannon D. AU - Gerlach, Karl AU - Rangaswamy, Muralidhar T1 - STAP using Knowledge-Aided Covariance Estimation and the FRACTA Algorithm. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2006/07// VL - 42 IS - 3 M3 - Article SP - 1043 EP - 1057 SN - 00189251 AB - In the airborne space-time adaptive processing (STAP) setting, a priori information via knowledge-aided covariance estimation (KACE) is employed in order to reduce the required sample support for application to heterogeneous clutter scenarios. The enhanced FRACTA (FRACTA.E) algorithm with KACE as well as Doppler-sensitive adaptive coherence estimation (DS-ACE) is applied to the KASSPER I & II data sets where it is shown via simulation that near-clairvoyant detection performance is maintained with as little as 1/3 of the normally required number of training data samples. The KASSPER I & II data sets are simulated high-fidelity heterogeneous clutter scenarios which possess several groups of dense targets. KACE provides a priori information about the clutter covariance matrix by exploiting approximately known operating parameters about the radar platform such as pulse repetition frequency (PRF), crab angle, and platform velocity. In addition, the DS-ACE detector is presented which provides greater robustness for low sample support by mitigating false alarms from undernulled clutter near the clutter ridge while maintaining sufficient sensitivity away from the clutter ridge to enable effective target detection performance. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DETECTORS KW - ANALYSIS of covariance KW - ENGINEERING instruments KW - PHYSICS instruments KW - ELECTRONIC pulse techniques KW - ELECTRONIC systems N1 - Accession Number: 23333574; Blunt, Shannon D. 1 Gerlach, Karl 2 Rangaswamy, Muralidhar 3; Affiliation: 1: University of Kansas, 2335 Irving Hill Rd., Lawrence, KS 66045. 2: U.S. Naval Research Laboratory, 4555 Overlook Ave. SW., Washington, D.C. 20375. 3: U.S. Air Force Research Laboratory/SNHE, 80 Scott Dr., Hanscom AFB, MA 01731.; Source Info: Jul2006, Vol. 42 Issue 3, p1043; Subject Term: DETECTORS; Subject Term: ANALYSIS of covariance; Subject Term: ENGINEERING instruments; Subject Term: PHYSICS instruments; Subject Term: ELECTRONIC pulse techniques; Subject Term: ELECTRONIC systems; Number of Pages: 15p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23333574&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Warren, D. A. AU - Graeter, L. J. AU - Channel, S. R. AU - Eggers, J. S. AU - Goodyear, C. D. AU - MacMahon, K. L. AU - Sudberry, G. L. AU - Latendresse, J. R. AU - Fisher, J. W. AU - Baker, W. H. T1 - Trichloroethylene, Trichloroacetic Acid, and Dichloroacetic Acid: Do They Affect Eye Development in the Sprague-Dawley Rat? JO - International Journal of Toxicology (Taylor & Francis) JF - International Journal of Toxicology (Taylor & Francis) Y1 - 2006/07// VL - 25 IS - 4 M3 - Article SP - 279 EP - 284 PB - Taylor & Francis Ltd SN - 10915818 AB - Maternal exposure to high doses of trichloroethylene (TCE) and its oxidative metabolites, trichloroacetic acid (TCA) and dichloroacetic acid (DCA), has been implicated in eye malformations in fetal rats, primarily micro-/anophthalmia. Subsequent to a cardiac teratology study of these compounds (Fisher et al. 2001, Int. J. Toxicol. 20:257–267), their potential to induce ocular malformations was examined in a subset of the same experimental animals. Pregnant, Sprague-Dawley Crl:CDR BR rats were orally treated on gestation days (GDs) 6 to 15 with bolus doses of either TCE (500 mg/kg/day), TCA (300 mg/kg/day), DCA (300 mg/kg/day), or all- trans retinoic acid (RA; 15 mg/kg/day). The heads of GD 21 fetuses were not only examined grossly for external malformations, but were sectioned using a modified Wilson's technique and subjected to computerized morphometry that allowed for the quantification of lens area, globe area, medial canthus distance, and interocular distance. Gross ocular malformations were essentially absent in all treatment groups except for the RA group in which 26% of fetuses exhibited micro-/anophthalmia. Using the litter as the experimental unit of analysis, lens area, globe area, and interocular distance were statistically significantly reduced in the DCA treatment group. Statistically significant reductions in lens and globe areas also occurred in the RA treatment group, all four ocular measures were reduced in the TCA treatment group but none significantly so, and TCE was without effect. Because DCA, TCA, and RA treatments were associated with significant reductions in fetal body weight (bw), data were also statistically analyzed after bw adjustment. Doing so dramatically altered the results of treatment group comparisons, but the severity of bw reduction and the degree of change in ocular measures did not always correlate. This suggests that bw reduction may not be an adequate explanation for all the changes observed in ocular measures. Thus, it is unclear whether DCA specifically disrupted ocular development even under these provocative exposure conditions. Clearly, however, if TCE is capable of disrupting ocular development in the Sprague-Dawley rat, a higher dose than that employed in the present study is required. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Toxicology (Taylor & Francis) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRICHLOROETHYLENE KW - METABOLITES KW - TERATOLOGY KW - PATHOLOGY KW - ANESTHETICS KW - CHLOROHYDROCARBONS KW - BIOLOGICAL products KW - BIOMOLECULES KW - RESEARCH KW - Dichloroacetic Acid KW - Eye KW - Teratogen KW - Trichloroacetic Acid N1 - Accession Number: 21460053; Warren, D. A. 1; Email Address: dwarren@gwm.sc.edu Graeter, L. J. 2 Channel, S. R. 1 Eggers, J. S. 1 Goodyear, C. D. 3 MacMahon, K. L. 1 Sudberry, G. L. 1 Latendresse, J. R. 2 Fisher, J. W. 1 Baker, W. H. 1; Affiliation: 1: Air Force Research Laboratory, Human Effectiveness Directorate, Wright-Patterson AFB, Ohio, USA 2: ManTech Environmental Technology, Inc., Air Force Research Laboratory, Human Effectiveness Directorate, Wright-Patterson AFB, Ohio, USA 3: Private Consultant, Dayton, Ohio, USA; Source Info: Jul2006, Vol. 25 Issue 4, p279; Subject Term: TRICHLOROETHYLENE; Subject Term: METABOLITES; Subject Term: TERATOLOGY; Subject Term: PATHOLOGY; Subject Term: ANESTHETICS; Subject Term: CHLOROHYDROCARBONS; Subject Term: BIOLOGICAL products; Subject Term: BIOMOLECULES; Subject Term: RESEARCH; Author-Supplied Keyword: Dichloroacetic Acid; Author-Supplied Keyword: Eye; Author-Supplied Keyword: Teratogen; Author-Supplied Keyword: Trichloroacetic Acid; NAICS/Industry Codes: 325411 Medicinal and Botanical Manufacturing; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; NAICS/Industry Codes: 325414 Biological Product (except Diagnostic) Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 6p; Illustrations: 5 Charts, 2 Graphs; Document Type: Article L3 - 10.1080/10915810600745975 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21460053&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Riggins, David W. AU - Taylor, Trent AU - Moorhouse, David J. T1 - Methodology for Performance Analysis of Aerospace Vehicles Using the Laws of Thermodynamics. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2006/07//Jul/Aug2006 VL - 43 IS - 4 M3 - Article SP - 953 EP - 963 SN - 00218669 AB - Theory, methodology, and example applications are developed and shown for the systematic analysis of overall vehicle forces in terms of irreversibility and heat. The methodology presented involves analyzing and Deconstructing vehicle forces using individual stream tubes as components within the overall fluid control volume in which the vehicle is embedded. This provides the capability for the complete fluid/thermodynamic "audit" of vehicle performance in terms of irreversibility, combustion (heating), and fluid dynamic flow turning and area change. Sample results are shown for a simplified hypersonic vehicle configuration modeled with constant specific heats and Rayleigh heating. The role of overall entropy generation and wake mixing processes in the production of vehicle forces in atmospheric flight is next discussed and clarified. Specifically, the direct analytical relationship between entropy, wake mixing processes, and overall force production for the vehicle is developed from fundamental considerations of the global control volume with inclusion of the wake in the analysis. This analysis is demonstrated using the same simplified high-speed configuration and is finally developed for the completely general problem of an aerospace vehicle with variable specific heats, thermal loading, variable composition, fuel injection, and chemical reaction. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUID dynamics KW - ENTROPY KW - AEROSPACE engineering KW - AERONAUTICS KW - CHEMICAL reactions N1 - Accession Number: 22180423; Riggins, David W. 1,2 Taylor, Trent 3,4 Moorhouse, David J. 5,6; Affiliation: 1: Professor of Aerospace Engineering, University of Missouri-Rolla, Rolla, Missouri 65409 2: Senior Member AIAA 3: Graduate Research Assistant, University of Missouri-Rolla, Rolla, Missouri 65409 4: Student Member AIAA 5: MD Center Director, 218 Building 146, U.S. Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 6: Associate Fellow AIAA; Source Info: Jul/Aug2006, Vol. 43 Issue 4, p953; Subject Term: FLUID dynamics; Subject Term: ENTROPY; Subject Term: AEROSPACE engineering; Subject Term: AERONAUTICS; Subject Term: CHEMICAL reactions; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; Number of Pages: 11p; Illustrations: 6 Diagrams, 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22180423&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Attar, Peter J. AU - Dowell, Earl H. T1 - Stochastic Analysis of a Nonlinear Aeroelastic Model Using the Response Surface Method. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2006/07//Jul/Aug2006 VL - 43 IS - 4 M3 - Article SP - 1044 EP - 1052 SN - 00218669 AB - An efficient method is presented for quantifying the effect of parametric uncertainty on the response of a nonlinear aeroelastic system. The proposal stochastic model uses a response surface method to map the random input parameters of the system to the specified system output (in this instance root-mean square wing tip response). To handle the bifurcation in the response surface due to aeroelastic self-excited instability, the response surface model is fit using a two region regression. The results from this model are compared to those from a full Monte Carlo simulation for both a one-dimensional random input parameter model (thickness) and a two-dimensional random input parameter model (thickness and modulus of elasticity). The response surface method results compare favorably with the full model results while achieving a 2 to 3 order of magnitude gain in computational efficiency. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - STOCHASTIC processes KW - MATHEMATICAL models KW - MONTE Carlo method KW - SIMULATION methods & models N1 - Accession Number: 22180434; Attar, Peter J. 1,2; Email Address: peter.attar@wpafb.af.mil Dowell, Earl H. 3,4,5,6; Affiliation: 1: NRC Fellow, Computational Sciences Branch, Air Force Research Laboratory, Computational Sciences Branch, Wright-Patterson Air Force Base, Ohio 45433-7913 2: Member AIAA 3: William Holland Hall Professor, Department of Mechanical Engineering, Duke University, Durham, North Carolina 27708 4: Materials Science and Director of the Center for Nonlinear and Complex Systems, Duke University, Durham, North Carolina 27708 5: Dean Emeritus, Pratt School of Engineering, Duke University, Durham, North Carolina 27708 6: Honorary Fellow AIAA; Source Info: Jul/Aug2006, Vol. 43 Issue 4, p1044; Subject Term: AEROELASTICITY; Subject Term: STOCHASTIC processes; Subject Term: MATHEMATICAL models; Subject Term: MONTE Carlo method; Subject Term: SIMULATION methods & models; Number of Pages: 9p; Illustrations: 17 Graphs; Document Type: Article L3 - 10.2514/1.17525 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22180434&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lips, John A. AU - Kasper, Eric P. AU - Welsh, Jeffry S. T1 - Finite Element Methods for the Frequency Response Prediction of Bonded Composite Structures. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2006/07// VL - 40 IS - 13 M3 - Article SP - 1175 EP - 1192 SN - 00219983 AB - The present study examines the effect bonded lap joints have on the frequency response of a given structure. The test article developed consist of carbon fiber composite sections joined with epoxy single-lap joints. The motivation for this study stems from the initial findings of previous works conducted at the Air Force Research Laboratory. This work shows the key factors affecting the influence of bonded lap joints on the system frequency to be: section stiffness, bond configuration and type, boundary conditions, and mass distribution. In addition, sensitivity analyses conducted give direction to the level of detail necessary to model bonded lap joints with adequate efficiency and accuracy. To aid in determining an effective and accurate methodology, the following sensitivity studies are conducted: element formulation, composite ply angle, and mesh discretization. Validation of these studies with experimental data for various configurations allow for an uncertainty assessment of the numerical data presented. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON fibers KW - COMPOSITE materials KW - BOUNDARY value problems KW - METHODOLOGY KW - NUMERICAL analysis KW - bonded KW - composite KW - finite element KW - frequency response KW - single-lap joint KW - stiffness N1 - Accession Number: 21599219; Lips, John A. 1; Email Address: john.lips@kirtland.af.mil Kasper, Eric P. 2 Welsh, Jeffry S. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Albuquerque, NM 87117, USA 2: Department of Civil Engineering, California Polytechnic State University, San Luis Obispo, CA 93407, USA; Source Info: Jul2006, Vol. 40 Issue 13, p1175; Subject Term: CARBON fibers; Subject Term: COMPOSITE materials; Subject Term: BOUNDARY value problems; Subject Term: METHODOLOGY; Subject Term: NUMERICAL analysis; Author-Supplied Keyword: bonded; Author-Supplied Keyword: composite; Author-Supplied Keyword: finite element; Author-Supplied Keyword: frequency response; Author-Supplied Keyword: single-lap joint; Author-Supplied Keyword: stiffness; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 18p; Illustrations: 9 Diagrams, 8 Charts, 6 Graphs; Document Type: Article L3 - 10.1177/0021998305057465 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21599219&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jia, W. AU - Jia, D. AU - Rodriguez, T. AU - Evans, D.R. AU - Meltzer, R.S. AU - Yen, W.M. T1 - UV excitation and trapping centers in CaTiO3:Pr3+ JO - Journal of Luminescence JF - Journal of Luminescence Y1 - 2006/07// VL - 119-120 M3 - Article SP - 13 EP - 18 SN - 00222313 AB - Abstract: Pr3+:CaTiO3, which produces red emission at 612nm is an attractive phosphor. Its UV excitation spectrum consists of three bands at 279, 330 and 360nm, which are assigned to the Pr3+ 4f to 5d transition, the valence-to-conduction band transition Ti4+–O2− to Ti3+–O− and the charge transfer transition Pr3+–Ti4+ to Pr4+–Ti3+, respectively. 3P0 luminescence under UV excitation is completely quenched to 1D2 through a strong coupling with the charge transfer state at room temperature. However, quite strong 3P0 emission was observed at low temperatures when the 3P2 state was excited at 457.9nm. In addition, the phosphor showed a red afterglow, which can be enhanced by adding Al3+. The traps are associated with electron trapping, and are possibly related to Pr4+ and oxygen vacancies existing in the samples. [Copyright &y& Elsevier] AB - Copyright of Journal of Luminescence is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LUMINESCENCE KW - COLLISIONS (Nuclear physics) KW - ION exchange (Chemistry) KW - ION-permeable membranes KW - Afterglow KW - CaTiO3:Pr3+ KW - Photoluminescence KW - Thermoluminescence KW - Trapping centers N1 - Accession Number: 25450300; Jia, W. 1; Email Address: wjia@uprm.edu Jia, D. 2 Rodriguez, T. 1 Evans, D.R. 3 Meltzer, R.S. 4 Yen, W.M. 4; Affiliation: 1: Department of Physics, University of Puerto Rico, Mayaguez, PR 00681, USA 2: Department of Geology and Physics, Lock Haven University of Pennsylvania, Lock Haven, PA 17745, USA 3: Air Force Research Laboratory, MLPJ, 3005 P. Street Bldg, Wright Patterson Air Force Base, OH 45433, USA 4: Department of Physics and Astronomy, University of Georgia, Athens, GA 30605, USA; Source Info: Jul2006, Vol. 119-120, p13; Subject Term: LUMINESCENCE; Subject Term: COLLISIONS (Nuclear physics); Subject Term: ION exchange (Chemistry); Subject Term: ION-permeable membranes; Author-Supplied Keyword: Afterglow; Author-Supplied Keyword: CaTiO3:Pr3+; Author-Supplied Keyword: Photoluminescence; Author-Supplied Keyword: Thermoluminescence; Author-Supplied Keyword: Trapping centers; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jlumin.2005.12.067 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25450300&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Evans, D.R. AU - Cook, G. AU - Carns, J.L. AU - Saleh, M.A. AU - Basun, S.A. AU - Seim, J.M. AU - Mizell, G.J. T1 - Understanding the optical and electrical properties of a new photorefractive potassium niobate crystal JO - Journal of Luminescence JF - Journal of Luminescence Y1 - 2006/07// VL - 119-120 M3 - Article SP - 535 EP - 540 SN - 00222313 AB - Abstract: Optical and electrical measurements have been made on a new codoped potassium niobate crystal that yields a significant increase in linear absorption, photocurrent, and photorefractive beam coupling efficiency. The Ag impurity enters the K site, changing the local field in the lattice. The Fe in the Nb site, perturbed by the replacement of the next near-neighbor K with Ag, is responsible for the enhanced linear and nonlinear properties. The modified material parameters result in an increase of the photorefractive counter-propagating two-beam coupling efficiency. [Copyright &y& Elsevier] AB - Copyright of Journal of Luminescence is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSORPTION KW - ALKALI metals KW - HIGH-potassium diet KW - LOW-potassium diet KW - Photorefractive KW - Photovoltaic KW - Potassium niobate KW - Two-beam coupling N1 - Accession Number: 25450439; Evans, D.R. 1; Email Address: dean.evans@wpafb.af.mil Cook, G. 1,2 Carns, J.L. 1,3 Saleh, M.A. 1,4 Basun, S.A. 5 Seim, J.M. 6 Mizell, G.J. 6; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate Wright-Patterson Air Force Base, OH 45433, USA 2: Universal Technology Corporation, 1270 N. Fairfield Road, Dayton, OH 45432, USA 3: Anteon Corporation, 5100 Springfield Pike Suite 509, Dayton, OH 45431, USA 4: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 5: A. F. Ioffe Physico-Technical Institute, Polytechnicheskaya 26, 194021, St. Petersburg, Russia 6: VLOC, 7826 Photonics Drive, New Port Richey, FL 34655, USA; Source Info: Jul2006, Vol. 119-120, p535; Subject Term: ABSORPTION; Subject Term: ALKALI metals; Subject Term: HIGH-potassium diet; Subject Term: LOW-potassium diet; Author-Supplied Keyword: Photorefractive; Author-Supplied Keyword: Photovoltaic; Author-Supplied Keyword: Potassium niobate; Author-Supplied Keyword: Two-beam coupling; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jlumin.2006.01.059 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=25450439&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pettit, C.L. AU - Beran, P.S. T1 - Spectral and multiresolution Wiener expansions of oscillatory stochastic processes JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2006/07// VL - 294 IS - 4/5 M3 - Article SP - 752 EP - 779 SN - 0022460X AB - Abstract: Wiener chaos expansions are being evaluated for the representation of stochastic variability in the response of nonlinear aeroelastic systems, which often exhibit limit cycles. Preliminary studies with a simple nonlinear aeroelastic computational model have shown that the standard non-intrusive Wiener–Hermite expansion fails to maintain time accuracy as the simulation evolves. Wiener–Hermite expansions faithfully reproduce the short-term characteristics of the process but consistently lose energy after several mean periods of oscillation. This energy loss remains even for very high-order expansions. To uncover the cause of this energy loss and to explore potential remedies, the more elementary problem of a sinusoid with random frequency is used herein to simulate the periodic response of an uncertain system. As time progresses, coefficients of the higher order terms in both the Wiener–Hermite and Wiener–Legendre expansions successively gain and lose dominance over the lower-order coefficients in a manner that causes any fixed-order expansion in terms of global basis functions to fail over a simulation time of sufficient duration. This characteristic behavior is attributed to the continually increasing frequency of the process in the random dimension. The recently developed Wiener–Haar expansion is found to almost entirely eliminate the loss of energy at large times, both for the sinusoidal process and for the response of a two degree-of-freedom nonlinear system, which is examined as a prelude to the stochastic simulation of aeroelastic limit cycles. It is also found that Mallat''s pyramid algorithm is more efficient and accurate for evaluating Wiener–Haar expansion coefficients than Monte Carlo simulation or numerical quadrature. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OSCILLATING chemical reactions KW - STOCHASTIC processes KW - OSCILLATIONS KW - MONTE Carlo method N1 - Accession Number: 20901214; Pettit, C.L. 1; Email Address: pettitcl@usna.edu Beran, P.S. 2; Email Address: philip.beran@wpafb.af.mil; Affiliation: 1: Aerospace Engineering Department, United States Naval Academy, Annapolis, MD 21402, USA 2: Air Vehicles Directorate, United States Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Jul2006, Vol. 294 Issue 4/5, p752; Subject Term: OSCILLATING chemical reactions; Subject Term: STOCHASTIC processes; Subject Term: OSCILLATIONS; Subject Term: MONTE Carlo method; Number of Pages: 28p; Document Type: Article L3 - 10.1016/j.jsv.2005.12.043 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20901214&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, K. AU - Gao, X.-L. AU - Roy, A. K. T1 - Micromechanical Modeling of Viscoelastic Properties of Carbon Nanotube-Reinforced Polymer Composites. JO - Mechanics of Advanced Materials & Structures JF - Mechanics of Advanced Materials & Structures Y1 - 2006/07//Jul/Aug2006 VL - 13 IS - 4 M3 - Article SP - 317 EP - 328 PB - Taylor & Francis Ltd SN - 15376494 AB - A micromechanics model is developed for predicting the linearly viscoelastic properties of carbon nanotube-reinforced polymer composites. By employing the Correspondence Principle in viscoelasticity, the Mori-Tanaka method is extended to the Carson domain. The inversion of the creep compliances from the Carson (transformed) domain to the time (physical) domain is accomplished numerically by using a recently developed multi-precision algorithm. The new micromechanics model is validated by comparing with existing experimental data. By applying the presently developed model, a parametric study for the creep behavior of carbon nanotube-reinforced polymer composites is conducted, with testing temperature, nanotube aspect ratio, nanotube volume fraction and nanotube orientation as the controlling parameters. For composites having unidirectionally aligned nanotubes, numerical results indicate that the increase of the nanotube aspect ratio significantly enhances their axial creep resistance but has insignificant influences on their transverse, shear and plane strain bulk creep compliances. Also, the random orientation of nanotubes provides more effective plane strain bulk creep resistance but less effective axial creep resistance than the aligned orientation does. In addition, the effect of the nanotube orientation on the shear compliances is negligibly small. Furthermore, for composites with aligned or randomly oriented nanotubes, all the compliances are found to decrease monotonically with the increase of the nanotube volume fraction. Finally, the influences of testing temperature on the composite creep compliances (except for the bulk strain compliance) are similar to those on the compliance of the matrix. [ABSTRACT FROM AUTHOR] AB - Copyright of Mechanics of Advanced Materials & Structures is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOTUBES KW - FULLERENES KW - POLYMERS KW - COMPOSITE materials KW - CARBON KW - MICROMECHANICS N1 - Accession Number: 20750473; Li, K. 1 Gao, X.-L. 1; Email Address: xlgao@tamu.edu Roy, A. K. 2; Affiliation: 1: Department of Mechanical Engineering, Texas A&M University, College Station, Texas, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio, USA; Source Info: Jul/Aug2006, Vol. 13 Issue 4, p317; Subject Term: NANOTUBES; Subject Term: FULLERENES; Subject Term: POLYMERS; Subject Term: COMPOSITE materials; Subject Term: CARBON; Subject Term: MICROMECHANICS; Number of Pages: 12p; Illustrations: 3 Charts, 22 Graphs; Document Type: Article L3 - 10.1080/15376490600583931 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20750473&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carns, J. L. AU - Cook, G. AU - Saleh, M. A. AU - Serak, S. V. AU - Tabiryan, N. V. AU - Basun, S. A. AU - Evans, D. R. T1 - Photovoltaic Field-Induced Self-Phase Modulation of Light in Liquid Crystal Cells. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2006/07// VL - 453 IS - 1 M3 - Article SP - 83 EP - 92 SN - 15421406 AB - We show that photovoltaic fields generated internally in LiNbO 3 :Fe substrates are capable of efficiently reorienting liquid crystal molecules leading to new concepts of optically addressable light modulators. Using an arrangement consisting of a liquid crystal layer in contact with one or more LiNbO 3 :Fe photovoltaic substrates, we observe spatial filtering due to self-phase modulation in a planar oriented cell. The LiNbO 3 :Fe substrates are arranged such that light propagates along the + c axis, allowing a secondary process of power transfer to occur through photorefractive contra-directional two-beam coupling. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - MOLECULES KW - ELECTROOPTICS KW - LIGHT sources KW - PHOTOREFRACTIVE materials KW - hybrid KW - light valve KW - LiNbO3:Fe KW - liquid crystal KW - photovoltaic KW - spatial filter N1 - Accession Number: 21323293; Carns, J. L. 1 Cook, G. 1 Saleh, M. A. 1 Serak, S. V. 2 Tabiryan, N. V. 2 Basun, S. A. 3 Evans, D. R. 1; Email Address: dean.evans@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 2: BEAM Engineering for Advanced Measurements Co., South Orlando, Florida 3: A.F. Ioffe Physico-Technical Institute, St. Petersburg, Russia; Source Info: 2006, Vol. 453 Issue 1, p83; Subject Term: LIQUID crystals; Subject Term: MOLECULES; Subject Term: ELECTROOPTICS; Subject Term: LIGHT sources; Subject Term: PHOTOREFRACTIVE materials; Author-Supplied Keyword: hybrid; Author-Supplied Keyword: light valve; Author-Supplied Keyword: LiNbO3:Fe; Author-Supplied Keyword: liquid crystal; Author-Supplied Keyword: photovoltaic; Author-Supplied Keyword: spatial filter; Number of Pages: 10p; Document Type: Article L3 - 10.1080/15421400600651757 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21323293&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, G. AU - Carns, J. L. AU - Saleh, M. A. AU - Evans, D. R. T1 - Substrate Induced Pre-tilt in Hybrid Liquid Crystal/Inorganic Photorefractives. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2006/07// VL - 453 IS - 1 M3 - Article SP - 141 EP - 153 SN - 15421406 AB - We report on the photorefractive properties of nematic liquid crystals sandwiched between windows of cerium doped strontium barium niobate (Ce:SBN). Unlike simple glass substrates, the Ce:SBN induces molecular pre-tilts that generate electric dipole moments in the liquid crystal through the flexoelectric effect. This enables the liquid crystal to become sensitive to the sign of the space-charge field and leads to an increase in the optical amplification when the cell thickness is decreased. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - DIPOLE moments KW - STRONTIUM barium niobate KW - MAGNETIC dipoles KW - POLARIZATION (Electricity) KW - PHOTOREFRACTIVE materials KW - hybrid KW - liquid crystal KW - photorefractives KW - pre-tilt KW - surface effects N1 - Accession Number: 21323270; Cook, G. 1 Carns, J. L. 1 Saleh, M. A. Evans, D. R. 1; Email Address: dean.evans@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio; Source Info: 2006, Vol. 453 Issue 1, p141; Subject Term: LIQUID crystals; Subject Term: DIPOLE moments; Subject Term: STRONTIUM barium niobate; Subject Term: MAGNETIC dipoles; Subject Term: POLARIZATION (Electricity); Subject Term: PHOTOREFRACTIVE materials; Author-Supplied Keyword: hybrid; Author-Supplied Keyword: liquid crystal; Author-Supplied Keyword: photorefractives; Author-Supplied Keyword: pre-tilt; Author-Supplied Keyword: surface effects; Number of Pages: 13p; Document Type: Article L3 - 10.1080/15421400600651591 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21323270&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Evans, D. R. AU - Cook, G. AU - Saleh, M. A. AU - Carns, J. L. AU - Serak, S. AU - Tabiryan, N. T1 - New Phenomena in Dye-Doped Liquid Crystals: Black Hole Effect and Switchable Reversed Diffraction. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2006/07// VL - 453 IS - 1 M3 - Article SP - 177 EP - 190 SN - 15421406 AB - A nonlinear extinction of transmitted light is observed in liquid crystal cells with large concentrations of anthraquinone dye. Two distinct mechanisms are responsible for this effect when exposed to low and high intensity light, respectively. At low intensities, critical opalescence, micro-scatter, and an increase in linear absorption occur; whereas high intensities result in scattering from photo-induced micro-bubbles. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - ANTHRAQUINONES KW - CRITICAL opalescence KW - LIGHT -- Scattering KW - DIFFUSION KW - anthraquinone dye KW - bubbles KW - critical opalescence KW - light scattering KW - liquid crystals KW - Marangoni effect KW - micro-domains KW - nonlinear transmission N1 - Accession Number: 21323274; Evans, D. R. 1; Email Address: dean.evans@wpafb.af.mil Cook, G. 1 Saleh, M. A. 1 Carns, J. L. 1 Serak, S. 2 Tabiryan, N. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate Wright-Patterson Air Force Base, Ohio 2: BEAM Engineering for Advanced Measurements Co., Winter Park, Florida; Source Info: 2006, Vol. 453 Issue 1, p177; Subject Term: LIQUID crystals; Subject Term: ANTHRAQUINONES; Subject Term: CRITICAL opalescence; Subject Term: LIGHT -- Scattering; Subject Term: DIFFUSION; Author-Supplied Keyword: anthraquinone dye; Author-Supplied Keyword: bubbles; Author-Supplied Keyword: critical opalescence; Author-Supplied Keyword: light scattering; Author-Supplied Keyword: liquid crystals; Author-Supplied Keyword: Marangoni effect; Author-Supplied Keyword: micro-domains; Author-Supplied Keyword: nonlinear transmission; Number of Pages: 14p; Document Type: Article L3 - 10.1080/15421400600654058 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21323274&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jasperse, John R. AU - Basu, Bamandas AU - Lund, Eric J. AU - Bouhram, Mehdi T1 - Gyrotropic guiding-center fluid theory for turbulent inhomogeneous magnetized plasma. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2006/07// VL - 13 IS - 7 M3 - Article SP - 072903 PB - American Institute of Physics SN - 1070664X AB - In this paper, a new fluid theory is given in the guiding-center and gyrotropic approximation which is derivable from the Vlasov-Maxwell equations. The theory includes the effect of wave-particle interactions for the weakly turbulent, weakly inhomogeneous, nonuniformly magnetized plasma, and it is applicable to a variety of space and laboratory plasmas. It is assumed that the turbulence is random and electrostatic, and that the velocity-space Fokker-Planck operator can be used to calculate the correlation functions that describe the wave-particle interactions. Conservation laws are derived that relate the low-order velocity moments of the particle distributions to the turbulence. The theory is based on the work of Hubbard [Proc. R. Soc. London, Ser. A 260, 114 (1961)] and Ichimaru and Rosenbluth [Phys. Fluids 13, 2778 (1970)]. In the work presented here, the idea is proposed that the fluid equations can be solved (1) by using measurements of the turbulence to specify the electric-field fluctuations; and (2) by using measurements of the low-order velocity moments to specify the initial and boundary conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUID dynamics KW - TURBULENCE KW - PLASMA (Ionized gases) KW - IONIZED gases KW - MAXWELL equations KW - WAVE-particle duality N1 - Accession Number: 21863568; Jasperse, John R. 1 Basu, Bamandas 1 Lund, Eric J. 2 Bouhram, Mehdi 3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731 2: Space Science Center, University of New Hampshire, Durham, New Hampshire 03824 3: CETP-CNRS, 4 Avenue de Neptune, 94107 Saint-Maur Cedex, France; Source Info: Jul2006, Vol. 13 Issue 7, p072903; Subject Term: FLUID dynamics; Subject Term: TURBULENCE; Subject Term: PLASMA (Ionized gases); Subject Term: IONIZED gases; Subject Term: MAXWELL equations; Subject Term: WAVE-particle duality; Number of Pages: 14p; Document Type: Article L3 - 10.1063/1.2220006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21863568&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shawn Powell AU - Bobby Northern T1 - Assessing and Treating Depression in Adolescents Who Are More than Moody. JO - School Psychology Quarterly JF - School Psychology Quarterly Y1 - 2006///Summer2006 VL - 21 IS - 2 M3 - Article SP - 225 EP - 232 SN - 10453830 N1 - Accession Number: 21342446; Shawn Powell 1 Bobby Northern 2; Affiliation: 1: 1. United States Air Force Academy 2: 2. United States Air Force Academy; Source Info: Summer2006, Vol. 21 Issue 2, p225; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21342446&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Spowart, Jonathan E. T1 - Automated serial sectioning for 3-D analysis of microstructures JO - Scripta Materialia JF - Scripta Materialia Y1 - 2006/07// VL - 55 IS - 1 M3 - Article SP - 5 EP - 10 SN - 13596462 AB - Abstract: Automated serial sectioning is a flexible, low-cost technique for rapidly obtaining three-dimensional (3-D) microstructural data in a wide variety of materials. Advantages over previous manual methods are highlighted, and case studies are used to demonstrate the power of the technique for 3-D characterization and the generation of microstructural data for modeling. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Analysis KW - MICROMECHANICS KW - MICROSTRUCTURE KW - MATHEMATICAL models KW - 3-D KW - Microstructure KW - Serial sectioning N1 - Accession Number: 20749177; Spowart, Jonathan E. 1; Email Address: Jonathan.Spowart@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Jul2006, Vol. 55 Issue 1, p5; Subject Term: MATERIALS -- Analysis; Subject Term: MICROMECHANICS; Subject Term: MICROSTRUCTURE; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: 3-D; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Serial sectioning; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.scriptamat.2006.01.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20749177&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Uchic, Michael D. AU - Groeber, Michael A. AU - Dimiduk, Dennis M. AU - Simmons, J.P. T1 - 3D microstructural characterization of nickel superalloys via serial-sectioning using a dual beam FIB-SEM JO - Scripta Materialia JF - Scripta Materialia Y1 - 2006/07// VL - 55 IS - 1 M3 - Article SP - 23 EP - 28 SN - 13596462 AB - Abstract: Dual beam focused ion beam-scanning electron microscopes are well suited for characterizing micron and sub-micron size microstructural features in three dimensions via serial-sectioning procedures. Importantly, these commercially-available instruments can be used to collect morphological, crystallographic, and chemical information throughout a serial-sectioning experiment. Selected examples are shown to demonstrate these capabilities. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ION bombardment KW - HEAT resistant alloys KW - MICROMECHANICS KW - SCANNING electron microscopes KW - Focused ion beam (FIB) microscopy KW - Microstructure N1 - Accession Number: 20749180; Uchic, Michael D. 1; Email Address: michael.uchic@wpafb.af.mil Groeber, Michael A. 2 Dimiduk, Dennis M. 1 Simmons, J.P. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, United States 2: The Ohio State University, Department of Materials Science and Engineering, Columbus, OH 43210, United States; Source Info: Jul2006, Vol. 55 Issue 1, p23; Subject Term: ION bombardment; Subject Term: HEAT resistant alloys; Subject Term: MICROMECHANICS; Subject Term: SCANNING electron microscopes; Author-Supplied Keyword: Focused ion beam (FIB) microscopy; Author-Supplied Keyword: Microstructure; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.scriptamat.2006.02.039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20749180&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ashcroft, Bruce T1 - The One and Only Rattlesnake Bomber Base: Pyote Army Airfield in World War II. JO - Southwestern Historical Quarterly JF - Southwestern Historical Quarterly Y1 - 2006/07// VL - 110 IS - 1 M3 - Book Review SP - 154 EP - 155 SN - 0038478X AB - The article reviews the book "The One and Only Rattlesnake Bomber Base: Pyote Army Airfield in World War II," by Thomas E. Alexander. KW - WORLD War, 1939-1945 KW - NONFICTION KW - ALEXANDER, Thomas E. KW - ONE & Only Rattlesnake Bomber Base: Pyote Army Airfield in World War II, The (Book) N1 - Accession Number: 22096540; Ashcroft, Bruce 1; Affiliation: 1: Air Education and Training Command History Office; Source Info: Jul2006, Vol. 110 Issue 1, p154; Subject Term: WORLD War, 1939-1945; Subject Term: NONFICTION; Reviews & Products: ONE & Only Rattlesnake Bomber Base: Pyote Army Airfield in World War II, The (Book); People: ALEXANDER, Thomas E.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22096540&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - SLOCIK, JOSEPH M. AU - GOVOROV, ALEXANDER O. AU - NAIK, RAJESH R. T1 - Optical Characterization of Bio-assembled Hybrid Nanostructures. JO - Supramolecular Chemistry JF - Supramolecular Chemistry Y1 - 2006/07// VL - 18 IS - 5 M3 - Article SP - 415 EP - 421 PB - Taylor & Francis Ltd SN - 10610278 AB - Biological systems exemplify the utilization of highly specific recognition processes with a diverse set of building blocks for the synthesis and assembly of precisely defined nanomaterials. Consequently, these specialized biological processes and components are appealing for materials synthesis and have included the use of oligonucleotides, proteins, viruses, and antibodies as the primary organizational element. As a result, we present a peptide for gold reduction and synthesis, antibody recognition, and the antibody mediated assembly of gold/QDot nanostructures through a network of antibody-epitope and streptavidin/biotin interfaces. Optically, these structures exhibited increased quenching of fluorescence dependent on the number of attached gold particles. This was furthermore confirmed and consistent with theoretical calculations of exciton-energy transfer processes involving mixed numbers of gold particles per quantum dot. [ABSTRACT FROM AUTHOR] AB - Copyright of Supramolecular Chemistry is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOLOGICAL systems KW - NANOSTRUCTURED materials KW - NANOPARTICLES KW - QUANTUM dots KW - FLUORESCENCE KW - SUPRAMOLECULAR chemistry KW - Bionanotechnology KW - Bionanotechnology, Nanoparticles, Quantum dots KW - Electrostatic KW - Exciton KW - Flourescence KW - Geometric KW - Gold KW - Gold, Flourescence KW - Nanoparticles KW - Quantum dots KW - Stereochemical N1 - Accession Number: 21808360; SLOCIK, JOSEPH M. 1 GOVOROV, ALEXANDER O. 2 NAIK, RAJESH R. 1; Affiliation: 1: Wright-Patterson AFB, Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH, 45433-7702, USA 2: Ohio University, Department of Physics and Astronomy, Athens, OH, 45701, USA; Source Info: Jul2006, Vol. 18 Issue 5, p415; Subject Term: BIOLOGICAL systems; Subject Term: NANOSTRUCTURED materials; Subject Term: NANOPARTICLES; Subject Term: QUANTUM dots; Subject Term: FLUORESCENCE; Subject Term: SUPRAMOLECULAR chemistry; Author-Supplied Keyword: Bionanotechnology; Author-Supplied Keyword: Bionanotechnology, Nanoparticles, Quantum dots; Author-Supplied Keyword: Electrostatic; Author-Supplied Keyword: Exciton; Author-Supplied Keyword: Flourescence; Author-Supplied Keyword: Geometric; Author-Supplied Keyword: Gold; Author-Supplied Keyword: Gold, Flourescence; Author-Supplied Keyword: Nanoparticles; Author-Supplied Keyword: Quantum dots; Author-Supplied Keyword: Stereochemical; Number of Pages: 6p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1080/10615800600658925 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21808360&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smallwood, Steven A. AU - Eapen, Kalathil C. AU - Patton, Steven T. AU - Zabinski, Jeffrey S. T1 - Performance results of MEMS coated with a conformal DLC JO - Wear JF - Wear Y1 - 2006/06/30/ VL - 260 IS - 11/12 M3 - Article SP - 1179 EP - 1189 SN - 00431648 AB - Abstract: A MEMS electrostatic lateral output motor has been successfully coated with a diamond like carbon (DLC) coating to protect against wear. Experiments were performed to characterize coating chemistry and performance. Friction results from accelerated screening tests using a miniature, lightly loaded ball on flat tribometer showed that the DLC coating maintained low friction longer compared to uncoated silicon. DLC on DLC experiments showed the lowest friction, and those that were run in 30% RH showed a much longer lifetime than ones run in dry air. Uniformity of DLC coverage on MEMS was verified by Auger electron spectroscopy (AES), microRaman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS). Micrographs revealed that there is about a 3:1 ratio of DLC coating for a line of sight deposition region to a non line of sight deposition region. DLC coated MEMS outperformed uncoated MEMS by 16X in air and 300X in vacuum, albeit performance in vacuum was lower than in air. A very clear difference in wear debris was seen between devices run in air and in vacuum. Cylindrical rolls were dominant in the devices that were run in air and platelets were dominant on devices run in vacuum. Ultimately, the DLC coating was found to greatly improve performance over uncoated MEMS. [Copyright &y& Elsevier] AB - Copyright of Wear is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COATINGS industry KW - ELECTRON microscopy KW - TRIBOLOGY KW - X-ray spectroscopy KW - AES KW - DLC KW - MEMS KW - MEMS wear debris KW - Reliability KW - SEM N1 - Accession Number: 20959180; Smallwood, Steven A. 1; Email Address: steven.smallwood@wpafb.af.mil Eapen, Kalathil C. 2 Patton, Steven T. 2 Zabinski, Jeffrey S. 3; Email Address: jeffrey.zabinski@wpafb.af.mil; Affiliation: 1: Universal Technology Corporation, Dayton, OH 45432-2600, USA 2: University of Dayton Research Institute, Dayton, OH 45469-0168, USA 3: Air Force Research Laboratory (AFRL/MLBT), Bldg. 654, 2941 Hobson Way, Rm. 136, Wright Patterson Air Force Base, OH 45433-7750, USA; Source Info: Jun2006, Vol. 260 Issue 11/12, p1179; Subject Term: COATINGS industry; Subject Term: ELECTRON microscopy; Subject Term: TRIBOLOGY; Subject Term: X-ray spectroscopy; Author-Supplied Keyword: AES; Author-Supplied Keyword: DLC; Author-Supplied Keyword: MEMS; Author-Supplied Keyword: MEMS wear debris; Author-Supplied Keyword: Reliability; Author-Supplied Keyword: SEM; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.wear.2005.07.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20959180&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Shea, M.A. T1 - Editorial comment JO - Advances in Space Research JF - Advances in Space Research Y1 - 2006/06/29/ VL - 38 IS - 2 M3 - Editorial SP - 115 EP - 115 SN - 02731177 N1 - Accession Number: 22725715; Shea, M.A. 1; Email Address: sssrc@msn.com; Affiliation: 1: Emeritus, Air Force Research Laboratory (VSBX), Hanscom AFB, Bedford, MA 01731-3010, USA; Source Info: Jun2006, Vol. 38 Issue 2, p115; Number of Pages: 1p; Document Type: Editorial L3 - 10.1016/j.asr.2006.09.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22725715&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cliver, E.W. T1 - The 1859 space weather event: Then and now JO - Advances in Space Research JF - Advances in Space Research Y1 - 2006/06/29/ VL - 38 IS - 2 M3 - Article SP - 119 EP - 129 SN - 02731177 AB - Abstract: The 1859 space weather event, combining the first solar flare ever reported with arguably the largest geomagnetic storm ever observed, provided a dramatic opening to a new area of Sun–Earth studies. Here I describe solar science at the time of the discovery of the flare, recount the observation, and trace the developments that led to the correct interpretation of the 1859 solar-terrestrial event by Bartels in 1937. A “fast forward” takes us to the present time when advances in modeling and increasing concern with space weather have prompted renewed interest in a classic observation. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE environment KW - SOLAR activity KW - SOLAR flares KW - FORBUSH decreases KW - 1859 KW - Carrington event KW - Geomagnetic storm KW - Space weather KW - White-light flare N1 - Accession Number: 22725717; Cliver, E.W. 1; Email Address: edward.cliver@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory (VSBXS), 29 Randolph Road, Hanscom AFB, MA 01731-3010, USA; Source Info: Jun2006, Vol. 38 Issue 2, p119; Subject Term: SPACE environment; Subject Term: SOLAR activity; Subject Term: SOLAR flares; Subject Term: FORBUSH decreases; Author-Supplied Keyword: 1859; Author-Supplied Keyword: Carrington event; Author-Supplied Keyword: Geomagnetic storm; Author-Supplied Keyword: Space weather; Author-Supplied Keyword: White-light flare; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.asr.2005.07.077 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22725717&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shea, M.A. AU - Smart, D.F. T1 - Geomagnetic cutoff rigidities and geomagnetic coordinates appropriate for the Carrington flare Epoch JO - Advances in Space Research JF - Advances in Space Research Y1 - 2006/06/29/ VL - 38 IS - 2 M3 - Article SP - 209 EP - 214 SN - 02731177 AB - Abstract: Using the trajectory-tracing technique for cosmic rays in the geomagnetic field, vertical cutoff rigidity values for a world grid have been determined for Epoch 1850. These values have been used to derive a world map of iso-rigidity contours that would have been appropriate for the era of the Carrington flare in September 1859. When comparing these iso-rigidity contours with those determined for Epoch 2000, large differences are found, particularly in the Atlantic Ocean region. Geomagnetic cutoff rigidity values and geomagnetic coordinates have been determined for selected mid and low latitude geographic locations for which aurora were sighted during the geomagnetic storms of late August and early September 1859 and compared with the values for those locations calculated for the year 2000. While the geomagnetic latitude differences are relatively small, there are major changes in the vertical cutoff rigidity values for these same locations over this 150-year period. The cutoff differences are attributed to a combination of: (1) the decreasing internal geomagnetic field over the last 150 years and (2) the westward drift of the major features of the geomagnetic field. The relatively small changes in geomagnetic latitude are attributed to the small change in the latitude of the north magnetic pole over this 150-year period. This study emphasizes that while geomagnetic cutoff values are essential for the analysis of high-energy solar proton events, they are not an appropriate parameter for evaluation of the equatorward extent of an auroral display. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONIZING radiation KW - SPACE environment KW - NATURAL disasters KW - MAGNETIC pole KW - Carrington event KW - Epoch 1850 KW - Geomagnetic coordinates KW - Geomagnetic cutoff rigidities N1 - Accession Number: 22725727; Shea, M.A.; Email Address: sssrc@msn.com Smart, D.F. 1; Affiliation: 1: Emeritus, Air Force Research Laboratory (VSBX), Hanscom AFB, 29 Randolph Road, Bedford, MA 01731-3010, USA; Source Info: Jun2006, Vol. 38 Issue 2, p209; Subject Term: IONIZING radiation; Subject Term: SPACE environment; Subject Term: NATURAL disasters; Subject Term: MAGNETIC pole; Author-Supplied Keyword: Carrington event; Author-Supplied Keyword: Epoch 1850; Author-Supplied Keyword: Geomagnetic coordinates; Author-Supplied Keyword: Geomagnetic cutoff rigidities; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.asr.2005.03.156 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22725727&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smart, D.F. AU - Shea, M.A. AU - McCracken, K.G. T1 - The Carrington event: Possible solar proton intensity–time profile JO - Advances in Space Research JF - Advances in Space Research Y1 - 2006/06/29/ VL - 38 IS - 2 M3 - Article SP - 215 EP - 225 SN - 02731177 AB - Abstract: A possible >30MeV solar proton intensity–time profile associated with the Carrington solar flare event of 1 September 1859 is constructed. The derived profile is consistent with a >30MeV proton omni-directional fluence of 1.9×1010 cm−2 found by the analysis of solar proton generated NOy radicals that are deposited in polar ice. The intensity–time profile of the solar particle flux is constructed by assuming that the Carrington solar event is part of the class of interplanetary shock-dominated events where the maximum particle flux is observed as the shock passes the Earth. This assumption is based on the knowledge that the very large solar proton fluence events (those with >30MeV omni-directional fluence exceeding 1.0×109 cm−2) associated with central meridian solar activity during the last 50 years belong to this class of event. The absence of a statistically significant increase in the observed concentration of the cosmogenic nuclide 10Be for 1859 indicates that the solar cosmic radiation produced in the Carrington event had a soft spectrum, similar to other interplanetary shock-dominated events. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR radiation KW - SUN -- Active regions KW - BARYONS KW - ATOMS KW - Carrington event KW - Proton time profile KW - Protons intensity KW - Solar protons N1 - Accession Number: 22725728; Smart, D.F. 1; Email Address: sssrc@msn.com Shea, M.A. 1 McCracken, K.G. 2; Affiliation: 1: Emeritus at Air Force Research Laboratory (VSBX), Hanscom AFB, Bedford, MA 01731-3010, USA 2: IPST, University of Maryland, College Park, MD 29742-2431, USA; Source Info: Jun2006, Vol. 38 Issue 2, p215; Subject Term: SOLAR radiation; Subject Term: SUN -- Active regions; Subject Term: BARYONS; Subject Term: ATOMS; Author-Supplied Keyword: Carrington event; Author-Supplied Keyword: Proton time profile; Author-Supplied Keyword: Protons intensity; Author-Supplied Keyword: Solar protons; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.asr.2005.04.116 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22725728&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shea, M.A. AU - Smart, D.F. AU - McCracken, K.G. AU - Dreschhoff, G.A.M. AU - Spence, H.E. T1 - Solar proton events for 450 years: The Carrington event in perspective JO - Advances in Space Research JF - Advances in Space Research Y1 - 2006/06/29/ VL - 38 IS - 2 M3 - Article SP - 232 EP - 238 SN - 02731177 AB - Abstract: Using high resolution measurements of the impulsive nitrate events in polar ice as identifiers of solar proton events in the past, we have identified 19 events over the period 1561–1950 that equal or exceed the >30MeV fluence measured during the August 1972 episode of solar proton events. The largest nitrate impulsive deposition event (and largest solar proton fluence above 30MeV) occurred in late 1859in time association with the Carrington flare of September 1859. The Carrington flare occurred near the central meridian of the sun; the interplanetary disturbance associated with the solar activity rapidly traveled toward the earth resulting in an extremely large geomagnetic storm commencing within 17.1h of the visual observation of the solar flare. While this event was remarkable by itself, historical records indicate that the Carrington event was part of a sequence of solar activity as an active region traversed the solar disk. We compare the derived omni-directional solar proton fluence for the Carrington event of 1.9×1010 cm−2 above 30MeV with the solar proton fluence from the past and from more recent episodes of solar activity. The Carrington event is the largest solar proton event identified in our ∼450 year period, having almost twice the >30MeV solar proton fluence than the second largest event in 1895, and approximately four times the solar proton fluence of the August 1972 events. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR activity KW - SOLAR radiation KW - ASTRONOMICAL observations KW - SUN -- Active regions KW - Carrington event KW - Solar proton event comparisons KW - Solar proton events N1 - Accession Number: 22725731; Shea, M.A. 1; Email Address: sssrc@msn.com Smart, D.F. 1 McCracken, K.G. 2 Dreschhoff, G.A.M. 3 Spence, H.E. 4; Affiliation: 1: Emeritus at: Air Force Research Laboratory (VSBX), Hanscom AFB, 29 Randolph Road, Bedford, MA 01731-3010, USA 2: IPST, University of Maryland, College Park, MD 20742-2431, USA 3: Department of Physics and Astronomy, University of Kansas, Lawrence, KS 66047, USA 4: Boston University Department of Astronomy and Center for Space Physics, 725 Commonwealth Avenue, Boston, MA 02215, USA; Source Info: Jun2006, Vol. 38 Issue 2, p232; Subject Term: SOLAR activity; Subject Term: SOLAR radiation; Subject Term: ASTRONOMICAL observations; Subject Term: SUN -- Active regions; Author-Supplied Keyword: Carrington event; Author-Supplied Keyword: Solar proton event comparisons; Author-Supplied Keyword: Solar proton events; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.asr.2005.02.100 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22725731&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Burke, William J. AU - Huang, Cheryl Y. AU - Rich, Frederick J. T1 - Energetics of the April 2000 magnetic superstorm observed by DMSP JO - Advances in Space Research JF - Advances in Space Research Y1 - 2006/06/29/ VL - 38 IS - 2 M3 - Article SP - 239 EP - 252 SN - 02731177 AB - Abstract: During the late main phase of the April 6, 2000 storm with Dst approaching −300nT, four Defense Meteorological Satellite Program (DMSP) satellites encountered repeated episodes of intense field-aligned currents whose magnetic perturbations exceeded 1300nT, corresponding to |J ∥|>1A/m. They had relatively fast rise times (∼5min) and lasted for ∼20min. The large magnetic perturbations occurred within the expanded auroral oval at magnetic latitudes below 60°. From Poynting-flux calculations we estimate that during each event several hundred tera-Joules of energy that dissipates in the mid-latitude ionosphere and thermosphere. Ground magnetometers at auroral and middle latitudes detected weak fluctuations that were incommensurate with magnetic perturbations observations at DMSP altitudes. Observed discrepancies between ground and satellite magnetometer measurements suggest that under storm conditions operational models systematically underestimate the level of electromagnetic energy available to the ionosphere–thermosphere. We demonstrate a transmission-line model for M-I coupling that allows calculations of this electromagnetic energy input with no a priori knowledge of ionospheric conductances. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - UPPER atmosphere KW - PERTURBATION (Astronomy) KW - METEOROLOGICAL satellites KW - SATELLITE meteorology KW - DMSP KW - Energetics KW - Magnetic superstorm N1 - Accession Number: 22725732; Burke, William J. 1 Huang, Cheryl Y.; Email Address: Cheryl.Huang@hanscom.af.mil Rich, Frederick J. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, MA, USA; Source Info: Jun2006, Vol. 38 Issue 2, p239; Subject Term: UPPER atmosphere; Subject Term: PERTURBATION (Astronomy); Subject Term: METEOROLOGICAL satellites; Subject Term: SATELLITE meteorology; Author-Supplied Keyword: DMSP; Author-Supplied Keyword: Energetics; Author-Supplied Keyword: Magnetic superstorm; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.asr.2005.07.085 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22725732&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shea, M.A. AU - Smart, D.F. T1 - Compendium of the eight articles on the “Carrington Event” attributed to or written by Elias Loomis in the American Journal of Science, 1859–1861 JO - Advances in Space Research JF - Advances in Space Research Y1 - 2006/06/29/ VL - 38 IS - 2 M3 - Article SP - 313 EP - 385 SN - 02731177 AB - Abstract: The eight articles attributed to or written by Elias Loomis on the outstanding aurora and magnetic observations between 28 August and 5 September 1859 are assembled into one compilation for easy reference by contemporary researchers. The articles were originally published in the American Journal of Science between 1859 and 1861. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AURORAS KW - ATMOSPHERIC physics KW - SOLAR activity KW - SUN -- Active regions KW - Aurora KW - Carrington Event of 1859 KW - Elias Loomis KW - Geomagnetic disturbances N1 - Accession Number: 22725739; Shea, M.A.; Email Address: sssrc@msn.com Smart, D.F. 1; Affiliation: 1: Emeritus, Air Force Research Laboratory (VSBX), 29 Randolph Road, Hanscom AFB, Bedford, MA 01731-3010, USA; Source Info: Jun2006, Vol. 38 Issue 2, p313; Subject Term: AURORAS; Subject Term: ATMOSPHERIC physics; Subject Term: SOLAR activity; Subject Term: SUN -- Active regions; Author-Supplied Keyword: Aurora; Author-Supplied Keyword: Carrington Event of 1859; Author-Supplied Keyword: Elias Loomis; Author-Supplied Keyword: Geomagnetic disturbances; Number of Pages: 73p; Document Type: Article L3 - 10.1016/j.asr.2006.07.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22725739&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cheryl Wong Po Foo AU - Patwardhan, Siddharth V. AU - Belton, David J. AU - Kitchel, Brandon AU - Anastasiades, Daphne AU - Jia Huang AU - Naik, Rajesh R. AU - Perry, Carole C. AU - Kaplan, David L. T1 - Novel nanocomposites from spider silk-silica fusion (chimeric) proteins. JO - Proceedings of the National Academy of Sciences of the United States of America JF - Proceedings of the National Academy of Sciences of the United States of America Y1 - 2006/06/20/ VL - 103 IS - 25 M3 - Article SP - 9428 EP - 9433 SN - 00278424 AB - Silica skeletal architectures in diatoms are characterized by remarkable morphological and nanostructural details. Silk proteins from spiders and silkworms form strong and intricate self-assembling fibrous biomaterials in nature. We combined the features of silk with biosilica through the design, synthesis, and characterization of a novel family of chimeric proteins for subsequent use in model materials forming reactions. The domains from the major ampullate spidroin 1 (MaSp1) protein of Nephila clavipes spider dragline silk provide control over structural and morphological details because it can be self-assembled through diverse processing methods including film casting and fiber electrospinning. Biosilica nanostructures in diatoms are formed in aqueous ambient conditions at neutral pH and low temperatures. The R5 peptide derived from the silaff in protein of Cylindrotheca fusiformis induces and regulates silica precipitation in the chimeric protein designs under similar ambient conditions. Whereas mineralization reactions performed in the presence of R5 peptide alone form silica particles with a size distribution of 0.5-10 μm in diameter, reactions performed in the presence of the new fusion proteins generate nanocomposite materials containing silica particles with a narrower size distribution of 0.5-2 μm in diameter. Furthermore, we demonstrate that composite morphology and structure could be regulated by controlling processing conditions to produce films and fibers. These results suggest that the chimeric protein provides new options for processing and control over silica particle sizes, important benefits for biomedical and specialty materials, particularly in light of the all aqueous processing and the nanocomposite features of these new materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Proceedings of the National Academy of Sciences of the United States of America is the property of National Academy of Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - SILK KW - BIOMEDICAL materials KW - HYDROGEN-ion concentration KW - LOW temperatures KW - SILICA KW - biomaterials KW - biomineralization KW - ceramics KW - nanostructures KW - silaffin N1 - Accession Number: 22193631; Cheryl Wong Po Foo 1,2 Patwardhan, Siddharth V. 3 Belton, David J. 3 Kitchel, Brandon 1,2 Anastasiades, Daphne 1,2 Jia Huang 1,2 Naik, Rajesh R. 4 Perry, Carole C. 3; Email Address: carole.perry@ntu.ac.uk Kaplan, David L. 1,2; Email Address: david.kaplan@tufts.edu; Affiliation: 1: Department of Biomedical Engineering, Chemistry, Bioengineering and Biotechnology Center, Tufts University, Medford, MA 02155. 2: Department of Chemical and Biological Engineering, Bioengineering and Biotechnology Center, Tufts University, Medford, MA 02155. 3: Biomolecular and Materials Interface Research Group, School of Biomedical and Natural Sciences, Nottingham Trent University, Nottingham NG11 8NS, United Kingdom. 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, 3005 Hobson Way, Wright-Patterson Air Force Base, OH 45433-7702.; Source Info: 6/20/2006, Vol. 103 Issue 25, p9428; Subject Term: NANOPARTICLES; Subject Term: SILK; Subject Term: BIOMEDICAL materials; Subject Term: HYDROGEN-ion concentration; Subject Term: LOW temperatures; Subject Term: SILICA; Author-Supplied Keyword: biomaterials; Author-Supplied Keyword: biomineralization; Author-Supplied Keyword: ceramics; Author-Supplied Keyword: nanostructures; Author-Supplied Keyword: silaffin; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 313110 Fiber, Yarn, and Thread Mills; NAICS/Industry Codes: 112999 All other miscellaneous animal production; NAICS/Industry Codes: 313210 Broadwoven Fabric Mills; Number of Pages: 6p; Document Type: Article L3 - 10.1073/pnas.0601096103 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22193631&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fan, Li AU - Hsu, Ta-Chen AU - Fallahi, Mahmoud AU - Murray, James T. AU - Bedford, Robert AU - Kaneda, Yushi AU - Hader, Jör;g AU - Zakharian, Aramais R. AU - Moloney, Jerome V. AU - Koch, Stephan W. AU - Stolz, Wolfgang T1 - Tunable watt-level blue-green vertical-external-cavity surface-emitting lasers by intracavity frequency doubling. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/06/19/ VL - 88 IS - 25 M3 - Article SP - 251117 PB - American Institute of Physics SN - 00036951 AB - We report on the development and the demonstration of a tunable, watt-level, blue-green, linearly polarized vertical-external-cavity surface-emitting lasers operating around 488 nm by intracavity second-harmonic generation. By using lithium triborate crystal, we have achieved over 1.3 W continuous wave blue-green power at 488 nm with a 5 nm tunability. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - LIGHT amplifiers KW - LIGHT sources KW - OPTOELECTRONIC devices KW - CRYSTALS N1 - Accession Number: 21487841; Fan, Li 1; Email Address: lifan@optics.arizona.edu Hsu, Ta-Chen 1 Fallahi, Mahmoud 1 Murray, James T. 2 Bedford, Robert 3 Kaneda, Yushi 1 Hader, Jör;g 4 Zakharian, Aramais R. 4 Moloney, Jerome V. 4 Koch, Stephan W. 5 Stolz, Wolfgang 5; Affiliation: 1: College of Optical Sciences, University of Arizona, Tucson, Arizona 85721 2: Areté ;Associates, 333 N. Wilmot Road, Ste 450, Tucson, Arizona 85751-2348 3: Air Force Research Laboratory, 2241 Avionics Circle Wright-Patterson AFB, Ohio 45433 4: Arizona Center for Mathematical Science, University of Arizona, Tucson, Arizona 85721 5: Department of Physics and Material Sciences Center, Philipps Universität Marburg, Renthof′5, 35032 Marburg, Germany; Source Info: 6/19/2006, Vol. 88 Issue 25, p251117; Subject Term: LASERS; Subject Term: LIGHT amplifiers; Subject Term: LIGHT sources; Subject Term: OPTOELECTRONIC devices; Subject Term: CRYSTALS; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.2215635 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21487841&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Duong, C.N. AU - Verhoeven, S. AU - Guijt, C.B. T1 - Analytical and experimental study of load attractions and fatigue crack growths in two-sided bonded repairs JO - Composite Structures JF - Composite Structures Y1 - 2006/06/15/ VL - 73 IS - 4 M3 - Article SP - 394 EP - 402 SN - 02638223 AB - Abstract: With an increasing use of bonded composite patches for repairing fatigue and other damage on metallic aircraft structures, a research program under the sponsorship of the US Air Force Research Laboratory has been conducted for the advancement of this bonded composite technology. Through this research program, analytical methods for design and analysis of bonded patches have been developed and integrated into a PC-based computer code called CRAS (Composite Repair of Aircraft Structure) software. These analytical methods are reviewed briefly in this paper and they are validated with test results. [Copyright &y& Elsevier] AB - Copyright of Composite Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REPAIRING KW - FRACTURE mechanics KW - AIRFRAMES KW - AIR forces KW - Bonded repairs KW - Composite patch KW - Fatigue crack growth KW - Load attraction N1 - Accession Number: 20023860; Duong, C.N. 1; Email Address: cong.n.duong@boeing.com Verhoeven, S. 2 Guijt, C.B. 2; Affiliation: 1: The Boeing Company, 5301 Bolsa Avenue, MC H013-C326, Huntington Beach, CA 92647-2099, USA 2: United States Air Force Academy, Department of Engineering Mechanics, Center for Aircraft Structural Life Extension, 2354 Fairchild Dr., Suite 6L-155, CO 80840-6240, USA; Source Info: Jun2006, Vol. 73 Issue 4, p394; Subject Term: REPAIRING; Subject Term: FRACTURE mechanics; Subject Term: AIRFRAMES; Subject Term: AIR forces; Author-Supplied Keyword: Bonded repairs; Author-Supplied Keyword: Composite patch; Author-Supplied Keyword: Fatigue crack growth; Author-Supplied Keyword: Load attraction; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.compstruct.2005.02.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20023860&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sutherland, R. L. AU - Tondiglia, V. P. AU - Natarajan, L. V. AU - Lloyd, P. F. AU - Bunning, T. J. T1 - Coherent diffraction and random scattering in thiol-ene–based holographic polymer-dispersed liquid crystal reflection gratings. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2006/06/15/ VL - 99 IS - 12 M3 - Article SP - 123104 PB - American Institute of Physics SN - 00218979 AB - Bragg diffraction and random scattering in reflective holographic polymer-dispersed liquid crystal gratings are modeled using a matrix approach for a stack of low-high index layer pairs and an effective medium theory. Scattering is due to both random roughness of layer interfaces and random index variations within the layers. These are related to random liquid crystal droplet size and location as well as random orientation of the symmetry axes of bipolar droplets. Characteristic parameters governing coherent diffraction efficiency and random scattering are obtained partly from experiments, where possible, and partly from calculations based on a model of an effective medium applied to the grating. Calculations of grating transmittance are then compared to experimental transmittance spectra. Effects of scattering, primarily a decrease in baseline transmittance with wavelength and a small reduction in diffraction efficiency at the Bragg wavelength, are found to be due primarily to index inhomogeneities within the liquid-crystal-rich layers of the grating. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - LIGHT sources KW - WAVELENGTHS KW - STANDARDS of length KW - CRYSTALLINE polymers KW - SPECTRUM analysis N1 - Accession Number: 21845526; Sutherland, R. L. 1,2; Email Address: sutherlandr@saic.com Tondiglia, V. P. 1,2 Natarajan, L. V. 1,2 Lloyd, P. F. 1,3 Bunning, T. J. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Science Applications International Corporation, Dayton, Ohio 45431 3: UES, Inc., Dayton, Ohio 45432; Source Info: 6/15/2006, Vol. 99 Issue 12, p123104; Subject Term: LIQUID crystals; Subject Term: LIGHT sources; Subject Term: WAVELENGTHS; Subject Term: STANDARDS of length; Subject Term: CRYSTALLINE polymers; Subject Term: SPECTRUM analysis; Number of Pages: 12p; Illustrations: 1 Color Photograph, 2 Black and White Photographs, 4 Diagrams, 2 Charts, 9 Graphs; Document Type: Article L3 - 10.1063/1.2206876 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21845526&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cahay, M. AU - Garre, K. AU - Wu, X. AU - Poitras, D. AU - Lockwood, D. J. AU - Fairchild, S. T1 - Physical properties of lanthanum monosulfide thin films grown on (100) silicon substrates. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2006/06/15/ VL - 99 IS - 12 M3 - Article SP - 123502 PB - American Institute of Physics SN - 00218979 AB - Thin films of lanthanum monosulfide (LaS) have been deposited on Si (100) substrates by pulsed laser deposition. The films are golden yellow in appearance with a mirrorlike surface morphology and a sheet resistance around 0.1 Ω/□, as measured using a four-probe measurement technique. The thin films are characterized by atomic force microscopy (AFM), x-ray diffraction (XRD) analysis, high resolution transmission electron microscopy (HRTEM), ellipsometry, and Raman spectroscopy. The root-mean-square variation of (1 μm thick) film surface roughness measured over a 1 μm2 area by AFM was found to be 1.74 nm. XRD analysis of fairly thick films (micrometer size) reveals the growth of the cubic rocksalt structure with a lattice constant of 5.863(7) Å, which is close to the bulk LaS value. HRTEM images reveal that the films are comprised of nanocrystals separated by regions of amorphous material. Two beam bright field TEM images show that there is a strain contrast in the Si substrate right under the interface with the LaS film and penetrating into the Si substrate. This suggests that there is an initial epitaxial-like growth of the LaS film on the Si substrate that introduces a strain as a result of the 8% lattice mismatch between the film and substrate. Ellipsometry measurements of the LaS films are well characterized by a Drude-Lorentz model from which an electron concentration of about 2.52×1022 cm-3 and a mobility around 8.5 cm2/V s are derived. Typical crystalline LaS features were evident in Raman spectra of the films, but the spectra also revealed their disordered (polycrystalline) nature. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATTER -- Properties KW - LANTHANUM KW - SILICON KW - THIN films KW - ATOMIC force microscopy KW - X-ray diffraction N1 - Accession Number: 21845555; Cahay, M. 1; Email Address: marc.cahay@uc.edu Garre, K. 1 Wu, X. 2 Poitras, D. 2 Lockwood, D. J. 2 Fairchild, S. 3; Affiliation: 1: ECECS Department, University of Cincinnati, Cincinnati, Ohio 45221 2: Institute for Microstructural Sciences, National Research Council, Ottawa, Ontario K1A OR6, Canada 3: Air Force Research Laboratory, WPAFB, Ohio 45433; Source Info: 6/15/2006, Vol. 99 Issue 12, p123502; Subject Term: MATTER -- Properties; Subject Term: LANTHANUM; Subject Term: SILICON; Subject Term: THIN films; Subject Term: ATOMIC force microscopy; Subject Term: X-ray diffraction; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 6p; Illustrations: 2 Color Photographs, 4 Black and White Photographs, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.2201998 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21845555&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Deborah D. Zorn AU - Jerry A. Boatz AU - Mark S. Gordon T1 - Electronic Structure Studies of Tetrazolium-Based Ionic Liquids. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2006/06/15/ VL - 110 IS - 23 M3 - Article SP - 11110 EP - 11119 SN - 15206106 AB - New energetic ionic liquids are investigated as potential high energy density materials. Ionic liquids are composed of large, charge-diffuse cations, coupled with various (usually oxygen containing) anions. In this work, calculations have been performed on the tetrazolium cation with a variety of substituents. Density functional theory (DFT) with the B3LYP functional, using the 6-311G(d,p) basis set was used to optimize geometries. Improved treatment of dynamic electron correlation was obtained using second-order perturbation theory (MP2). Heats of formation of the cation with different substituent groups were calculated using isodesmic reactions and Gaussian-2 calculations on the reactants. The cation was paired with oxygen rich anions ClO4-, NO3-, or N(NO2)2-and those structures were optimized using both DFT and MP2. The reaction pathway for proton transfer from the cation to the anion was investigated. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CATIONS KW - POLYWATER KW - IONS KW - HYDROSTATICS N1 - Accession Number: 21812238; Deborah D. Zorn 1 Jerry A. Boatz 1 Mark S. Gordon 1; Affiliation: 1: Department of Chemistry, Iowa State University, Ames, Iowa 50011, and Air Force Research Laboratory,Space and Missile Propulsion Division, AFRL/PRS, 10 East Saturn Boulevard, Edwards AFB, California 93524; Source Info: Jun2006, Vol. 110 Issue 23, p11110; Subject Term: CATIONS; Subject Term: POLYWATER; Subject Term: IONS; Subject Term: HYDROSTATICS; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21812238&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lapovok, R. AU - Loader, C. AU - Torre, F.H. Dalla AU - Semiatin, S.L. T1 - Microstructure evolution and fatigue behavior of 2124 aluminum processed by ECAE with back pressure JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2006/06/15/ VL - 425 IS - 1/2 M3 - Article SP - 36 EP - 46 SN - 09215093 AB - Abstract: Microstructure evolution, workability, and post-working fatigue behavior were established for aluminum alloy 2124-T851 processed via equal channel angular extrusion (ECAE) with back pressure. ECAE without back pressure resulted in complete fracture during the first pass. On the other hand, ECAE with back pressure enabled the production of sound material with significant grain refinement to the nano-scale. In contrast to typical property trends, an attractive combination of tensile ductility and LCF fatigue life was obtained as well as improved strength and HCF fatigue life compared to coarse-grained material in the as-received (T851) condition. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM alloys KW - STEREOLOGY KW - METALLIC composites KW - MICROMECHANICS KW - Aluminum alloys KW - Equal channel angular extrusion KW - Fatigue life KW - Ultrafine-grained structure N1 - Accession Number: 21265121; Lapovok, R. 1; Email Address: Rimma.Lapovok@spme.monash.edu.au Loader, C. 2 Torre, F.H. Dalla 1 Semiatin, S.L. 3; Affiliation: 1: School of Physics and Materials Engineering, Monash University, Clayton, Vic. 3800, Australia 2: DSTO Air Vehicles Division, 506 Lorimer St. Fishermans Bend, Vic. 3207, Australia 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMP, Wright-Paterson Air Force Base, OH 45433-7817, USA; Source Info: Jun2006, Vol. 425 Issue 1/2, p36; Subject Term: ALUMINUM alloys; Subject Term: STEREOLOGY; Subject Term: METALLIC composites; Subject Term: MICROMECHANICS; Author-Supplied Keyword: Aluminum alloys; Author-Supplied Keyword: Equal channel angular extrusion; Author-Supplied Keyword: Fatigue life; Author-Supplied Keyword: Ultrafine-grained structure; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.msea.2006.03.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21265121&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Spowart, Jonathan E. T1 - Microstructural characterization and modeling of discontinuously-reinforced aluminum composites JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2006/06/15/ VL - 425 IS - 1/2 M3 - Article SP - 225 EP - 237 SN - 09215093 AB - Abstract: Models for predicting the constitutive behavior of spatially-heterogeneous microstructures such as discontinuously-reinforced aluminum (DRA) and other metallic matrix composites based on unit cell approaches generally do not incorporate higher-order microstructural features such as degree of homogeneity and spatial anisotropy of the reinforcement phase. Moreover, more complex numerical models rarely encompass the volumes of material necessary to ensure statistical relevance. The present contribution offers an alternative approach for quantifying and then incorporating the microstructural homogeneity of these materials within an elastic-plastic finite element code. An attempt is made to model both the micromechanical length scale associated with the individual reinforcement particles and the microstructural length scale associated with their spatial distribution, at a greatly-reduced computational expense, by using a volume-averaged, discretized approach. A key assumption in this approach is that below the length scale of the discretization, the microstructure can be modeled by a uniform array of reinforcement particles. The effect of the level of discretization on predictions of microstructure-property relationships are not addressed directly in the present work. Detailed comparisons of the present model with discretely-modeled matrix-particle geometries will therefore form the basis of a subsequent publication. Nevertheless, several microstructure-property relationships are developed which reveal empirical relationships between microstructural homogeneity and the elastic-plastic response. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - ALUMINUM KW - MICROMECHANICS KW - STEREOLOGY KW - Discontinuously-reinforced aluminum KW - Micro-mechanical modeling KW - Microstructure-property relationships KW - Spatial heterogeneity N1 - Accession Number: 21265146; Spowart, Jonathan E. 1; Email Address: jonathan.spowart@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Jun2006, Vol. 425 Issue 1/2, p225; Subject Term: MICROSTRUCTURE; Subject Term: ALUMINUM; Subject Term: MICROMECHANICS; Subject Term: STEREOLOGY; Author-Supplied Keyword: Discontinuously-reinforced aluminum; Author-Supplied Keyword: Micro-mechanical modeling; Author-Supplied Keyword: Microstructure-property relationships; Author-Supplied Keyword: Spatial heterogeneity; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.msea.2006.03.064 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21265146&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Friedman, Jeffrey F. AU - Stevens, Amy E. AU - Miller, Thomas M. AU - Viggiano, A. A. T1 - Electron attachment to MoF6, ReF6, and WF6; reaction of MoF6- with ReF6 and reaction of Ar+ with MoF6. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2006/06/14/ VL - 124 IS - 22 M3 - Article SP - 224306 PB - American Institute of Physics SN - 00219606 AB - Rate constants were measured for electron attachment to MoF6, ReF6, and WF6 in 133 Pa of helium gas using a flowing-afterglow Langmuir-probe apparatus. The experiment is a thorny one because the molecules tend to form oxide impurities on feedline surfaces and because of thermal decomposition of MoF6 on surfaces as the gas temperature is increased. The electron attachment rate constant for MoF6 is (2.3±0.8)×10-9 cm3 s-1 at 297 K; only MoF6- is formed in the temperature range of 297–385 K. The rate constant increases with temperature up to the point where decomposition becomes apparent. Electron attachment to ReF6 occurs with a rate constant of (2.4±0.8)×10-9 cm3 s-1 at 297 K; only ReF6- is produced. MoF6- reacts with ReF6 to form ReF6- on essentially every collision, showing definitively that the electron affinity of ReF6 is greater than that of MoF6. A rate constant of (5.0±1.3)×10-10 cm3 s-1 was measured for this ion-molecule reaction at 304 K. The reverse reaction is not observed. The reaction of Ar+ with MoF6 was found to produce MoF5++F, with a rate constant of (1.8±0.5)×10-9 cm3 s-1. WF6 attaches electrons so slowly at room temperature that the attachment rate was below detection level (<=10-12 cm3 s-1). By 552 K, the attachment rate constant reaches a value of (2±1)×10-10 cm3 s-1. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LANGMUIR probes KW - PARTICLES (Nuclear physics) KW - AFFINITY electrophoresis KW - CHEMICAL affinity KW - PLASMA probes KW - ELECTRONS N1 - Accession Number: 21299858; Friedman, Jeffrey F. 1; Email Address: jeff@prtc.net Stevens, Amy E. 2 Miller, Thomas M. 3 Viggiano, A. A. 3; Affiliation: 1: Department of Physics, University of Puerto Rico, Mayaguez, Puerto Rico 00681-9016 2: Physical Sciences, Inc., 20 New England Business Center, Andover, Massachusetts 01810-1077 3: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Bedford, Massachusetts 01731-3010; Source Info: 6/14/2006, Vol. 124 Issue 22, p224306; Subject Term: LANGMUIR probes; Subject Term: PARTICLES (Nuclear physics); Subject Term: AFFINITY electrophoresis; Subject Term: CHEMICAL affinity; Subject Term: PLASMA probes; Subject Term: ELECTRONS; Number of Pages: 5p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.2202851 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21299858&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heinz, Hendrik AU - Vaia, R. A. AU - Farmer, B. L. T1 - Interaction energy and surface reconstruction between sheets of layered silicates. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2006/06/14/ VL - 124 IS - 22 M3 - Article SP - 224713 PB - American Institute of Physics SN - 00219606 AB - Interactions between two layered silicate sheets, as found in various nanoscale materials, are investigated as a function of sheet separation using molecular dynamics simulation. The model systems are periodic in the xy plane, open in the z direction, and subjected to stepwise separation of the two silicate sheets starting at equilibrium. Computed cleavage energies are 383 mJ/m2 for K-mica, 133 mJ/m2 for K-montmorillonite (cation exchange capacity=91), 45 mJ/m2 for octadecylammonium (C18)-mica, and 40 mJ/m2 for C18-montmorillonite. These values are in quantitative agreement with experimental data and aid in the molecular-level interpretation. When alkali ions are present at the interface between the silicate sheets, partitioning of the cations between the surfaces is observed at 0.25 nm separation (mica) and 0.30 nm separation (montmorillonite). Originally strong electrostatic attraction between the two silicate sheets is then reduced to 5% (mica) and 15% (montmorillonite). Weaker van der Waals interactions decay within 1.0 nm separation. The total interaction energy between sheets of alkali clay is less than 1 mJ/m2 after 1.5 nm separation. When C18 surfactants are present on the surfaces, the organic layer (>0.8 nm) acts as a spacer between the silicate sheets so that positively charged ammonium head groups remain essentially in the same position on the surfaces of the two sheets at any separation. As a result, electrostatic interactions are efficiently shielded and dispersive interactions account for the interfacial energy. The flexibility of the hydrocarbon chains leads to stretching, disorder, and occasional rearrangements of ammonium head groups to neighbor cavities on the silicate surface at medium separation (1.0–2.0 nm). The total interaction energy amounts to less than 1 mJ/m2 after 3 nm separation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR dynamics KW - SIMULATION methods & models KW - MONTMORILLONITE KW - QUANTITATIVE chemical analysis KW - AMMONIUM KW - QUANTUM theory N1 - Accession Number: 21299816; Heinz, Hendrik 1; Email Address: hendrik.heinz@wright.edu Vaia, R. A. 2 Farmer, B. L. 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433 and Department of Mechanical and Materials Engineering, Wright State University, Dayton, Ohio 45435 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433; Source Info: 6/14/2006, Vol. 124 Issue 22, p224713; Subject Term: MOLECULAR dynamics; Subject Term: SIMULATION methods & models; Subject Term: MONTMORILLONITE; Subject Term: QUANTITATIVE chemical analysis; Subject Term: AMMONIUM; Subject Term: QUANTUM theory; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; Number of Pages: 9p; Illustrations: 4 Diagrams, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.2202330 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21299816&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Xu, Yijin AU - Brittain, William J. AU - Vaia, Richard A. AU - Price, Gary T1 - Improving the physical properties of PEA/PMMA blends by the uniform dispersion of clay platelets JO - Polymer JF - Polymer Y1 - 2006/06/14/ VL - 47 IS - 13 M3 - Article SP - 4564 EP - 4570 SN - 00323861 AB - Abstract: Poly(ethyl acrylate) (PEA)/poly(methyl methacrylate) (PMMA) emulsion blends that were combined with unmodified montmorillionite (MMT) to improve the physical properties via nanocomposite formation. We prepared a cationic PEA/PMMA latex and used a heterocoagulation process to create a homogeneous dispersion of the clay platelets in the matrix. The cationic PEA/PMMA emulsion blends were prepared using a cationic initiator in the presence of free surfactant, cetyl trimethylammonium bromide (CTABr), followed by mixing with an aqueous slurry of MMT. The PEA/PMMA–MMT nanocomposites could be processed at low temperatures. Low temperature processing prevented the commonly observed discoloration associated with many thermoplastic nanocomposites. DSC, SAXS, TEM and AFM were used to study the dispersion of MMT and morphology of PEA/PMMA–MMT nanocomposites. Tensile stress, elongation at break and Young''s modulus demonstrated a significant reinforcing effect of clay. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMULSIONS KW - METHYL methacrylate KW - ACRYLATES KW - CLAY KW - BROMIDES KW - SURFACE active agents KW - Elastomers KW - Montmorillonite (MMT) KW - Nanocomposites N1 - Accession Number: 21189650; Xu, Yijin 1 Brittain, William J. 1; Email Address: wjbritt@uakron.edu Vaia, Richard A. 2 Price, Gary 3; Affiliation: 1: Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH 45433, USA 3: The University of Dayton Research Institute, Dayton, OH 45469, USA; Source Info: Jun2006, Vol. 47 Issue 13, p4564; Subject Term: EMULSIONS; Subject Term: METHYL methacrylate; Subject Term: ACRYLATES; Subject Term: CLAY; Subject Term: BROMIDES; Subject Term: SURFACE active agents; Author-Supplied Keyword: Elastomers; Author-Supplied Keyword: Montmorillonite (MMT); Author-Supplied Keyword: Nanocomposites; NAICS/Industry Codes: 212326 Shale, clay and refractory mineral mining and quarrying; NAICS/Industry Codes: 212324 Kaolin and Ball Clay Mining; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325613 Surface Active Agent Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.polymer.2006.03.108 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21189650&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buguo Wang AU - Michael J. Callahan T1 - Ammonothermal Synthesis of III-Nitride Crystals. JO - Crystal Growth & Design JF - Crystal Growth & Design Y1 - 2006/06/07/ VL - 6 IS - 6 M3 - Article SP - 1227 EP - 1246 SN - 15287483 AB - Ammonothermal synthesis of nitrides is reviewed, with an emphasis on gallium and aluminum nitrides due to their important applications as direct wide band gap semiconductors. Since the crystallization process of nitrides involves the formation of some intermediate compounds during ammonothermal synthesis where a mineralizer is used, some ternary amides and ammoniates of aluminum and gallium with alkali metals or halides are also reviewed briefly. The ammonothermal crystallization of GaN and AlN bulk crystals, which is analogous to the hydrothermal growth of oxides, is introduced. Retrograde solubility, mineralizers, pressure−temperature−volume−concentration (PTVC) relations, phase relations, and transport growth of GaN in alkaline solutions are discussed in detail. Recent progress of GaN single-crystal growth by the ammonothermal technique is reported. We have grown GaN bulk single crystals up to 10 mm2 by 1-mm thick. Issues such as ammonia breakdown, impurity incorporation, and scale-up of the ammonothermal growth of III-nitrides and perspectives on the method are also discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Crystal Growth & Design is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICAL & theoretical chemistry KW - CRYSTALLOGRAPHY KW - ALUMINUM nitride KW - ALUMINUM compounds N1 - Accession Number: 21630644; Buguo Wang 1 Michael J. Callahan 1; Affiliation: 1: Solid State Scientific Corporation, Hollis, New Hampshire 03049, and Sensor Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731; Source Info: Jun2006, Vol. 6 Issue 6, p1227; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: CRYSTALLOGRAPHY; Subject Term: ALUMINUM nitride; Subject Term: ALUMINUM compounds; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 20p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21630644&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buguo Wang AU - M. J. Callahan AU - L. O. Bouthillette T1 - Hydrothermal Growth and Photoluminescence of Zn1-xC)xO Alloy Crystals. JO - Crystal Growth & Design JF - Crystal Growth & Design Y1 - 2006/06/07/ VL - 6 IS - 6 M3 - Article SP - 1256 EP - 1260 SN - 15287483 AB - Zn1-xC)xO alloy formation via band gap engineering is important in the development of blue−UV optoelectronic devices by providing lattice-matched transparent substrates for ZnO and nitride-related devices. Zn1-xC)xO alloy single crystals (Zn0.97C)0.03O and Zn0.945C)0.055O) have been successfully grown by the hydrothermal technique. The growth experiments were carried out at 650 °C and 15−18 kpsi in alkaline solutions. Zn1-xC)xO alloy crystals were formed at pressures below ∼22 kpsi at the growth temperature of 650 °C. These conditions are similar to the formation of MgO under hydrothermal conditions. A thin ZnO layer formed on the surface of the ZnMgO crystals as the autoclaves cooled to room temperature. After the ZnO layer was removed by etching or polishing from both the Zn0.97C)0.03O and Zn0.945C)0.055O samples, blue shifts of the photoluminescence emission from the 3.364 eV line of pure ZnO to 3.414 and 3.447 eV, respectively, were measured at ∼18 K. The composition of the alloys was confirmed by using secondary ion mass spectroscopy (SIMS) elemental analysis. X-ray diffraction indicated that the alloy crystals have good structural quality, whereas the lattice parameters are smaller than those of pure ZnO (for Zn0.945C)0.055O a = 3.2416 Å, c = 5.1998 Å) because the radius of Mg2+ is smaller than that of Zn2+-i [ABSTRACT FROM AUTHOR] AB - Copyright of Crystal Growth & Design is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALLOGRAPHY KW - CRYSTALS KW - SOLID state electronics KW - METALLIC composites N1 - Accession Number: 21630628; Buguo Wang 1 M. J. Callahan 2 L. O. Bouthillette 2; Affiliation: 1: Solid State Scientific Corporation, 27-2 Wright Road, Hollis, New Hampshire 03049 2: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731; Source Info: Jun2006, Vol. 6 Issue 6, p1256; Subject Term: CRYSTALLOGRAPHY; Subject Term: CRYSTALS; Subject Term: SOLID state electronics; Subject Term: METALLIC composites; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21630628&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Polak, M. AU - Demencik, E. AU - Jansak, L. AU - Mozola, P. AU - Aized, D. AU - Thieme, C. L. H. AU - Levin, G. A. AU - Barnes, P. N. T1 - ac losses in a YBa2Cu3O7-x coil. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/06/05/ VL - 88 IS - 23 M3 - Article SP - 232501 PB - American Institute of Physics SN - 00036951 AB - The properties of a small pancake coil made with a 10 mm wide copper-stabilized YBa2Cu3O7-x (YBCO) coated conductor were investigated. The radial component of the magnetic field was mapped at the coil edge in both the dc and ac regimes and differs significantly from that calculated assuming a uniform current distribution. The observed hysteresis indicates the strong influence of the ferromagnetic properties of the substrate. The ac losses of the coil were measured for ac frequencies between 60 and 1000 Hz. The differences in properties of the YBCO coil and a similarly prepared copper coil are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COPPER KW - MAGNETIC fields KW - ELASTICITY KW - MAGNETIC induction KW - FERROMAGNETIC materials KW - FERROMAGNETISM N1 - Accession Number: 21215584; Polak, M. 1 Demencik, E. 1 Jansak, L. 1 Mozola, P. 1 Aized, D. 2 Thieme, C. L. H. 2 Levin, G. A. 3 Barnes, P. N. 3; Email Address: paul.barnes@wpafb.af.mil; Affiliation: 1: Institute of Electrical Engineering, 841 04 Bratislava, Slovakia 2: American Superconductor Corporation, Westborough, Massachusetts 01581 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: 6/5/2006, Vol. 88 Issue 23, p232501; Subject Term: COPPER; Subject Term: MAGNETIC fields; Subject Term: ELASTICITY; Subject Term: MAGNETIC induction; Subject Term: FERROMAGNETIC materials; Subject Term: FERROMAGNETISM; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.2207837 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21215584&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cohen, Samuel A. AU - Xuan Sun AU - Ferraro, Nathaniel M. AU - Scime, Earl E. AU - Miah, Mahmood AU - Stange, Sy AU - Siefert, Nicholas S. AU - Boivin, Robert F. T1 - On Collisionless Ion and Electron Populations in the Magnetic Nozzle Experiment (MNX). JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2006/06/02/Jun2006 Part 2 VL - 34 IS - 3 M3 - Article SP - 792 EP - 803 SN - 00933813 AB - The Magnetic Nozzle Experiment (MNX) is a linear magnetized helicon-heated plasma device, with applications to advanced spacecraft-propulsion methods and solar-corona physics. This paper reviews ion and electron energy distributions measured in MNX with laser-induced fluorescence (LIF) and probes, respectively. Ions, cold and highly collisional in the main MNX region, are accelerated along a uniform magnetic field to sonic then supersonic speeds as they exit the main region through either mechanical or magnetic apertures. A sharp decrease in density down- stream of the aperture(s) helps effect a transition from collisional to collisionless plasma. The electrons in the downstream region have an average energy somewhat higher than that in the main region. From LIF ion-velocity measurements, we find upstream of the aperture a presheath of strength Δϕps = mrTe, where mrTe is the electron temperature in the main region, and length ∼3 cm, comparable to the ion-neutral mean-free-path; immediately downstream of the aperture is an electrostatic double layer of strength ΔϕDL 3-10 mrTe and length 0.3-0.6 cm, 30-600λD. The existence of a small, ca. 0.1%, superthermal electron population with average energy ∼10 mrTe is inferred from considerations of spectroscopic line ratios, floating potentials, and Langmuir probe data. The superthermal electrons are suggested to be the source for the large ΔϕDL . [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA devices KW - SPACE flight propulsion systems KW - SOLAR corona KW - ELECTRON distribution KW - IONS KW - MAGNETIC fields KW - Double layer KW - helicon KW - laser-induced-fluorescence (LIF) KW - magnetic nozzle N1 - Accession Number: 21399933; Cohen, Samuel A. 1; Email Address: scohen@pppl.gov Xuan Sun 2 Ferraro, Nathaniel M. 1 Scime, Earl E. 2 Miah, Mahmood 1 Stange, Sy 3 Siefert, Nicholas S. 4 Boivin, Robert F. 5; Affiliation: 1: Plasma Physics Laboratory, Princeton University, Princeton, NJ 08543 USA 2: Physics Department, West Virginia University, Morgantown, WV 26506 USA 3: University Research Program in Robotics, University of Michigan, Ann Arbor, MI 48109 USA 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, Wright-Patterson Air Force Base, OH 45433-5543 USA 5: Physics Department, Auburn University, Auburn, AL 36849-5311 USA; Source Info: Jun2006 Part 2, Vol. 34 Issue 3, p792; Subject Term: PLASMA devices; Subject Term: SPACE flight propulsion systems; Subject Term: SOLAR corona; Subject Term: ELECTRON distribution; Subject Term: IONS; Subject Term: MAGNETIC fields; Author-Supplied Keyword: Double layer; Author-Supplied Keyword: helicon; Author-Supplied Keyword: laser-induced-fluorescence (LIF); Author-Supplied Keyword: magnetic nozzle; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing; Number of Pages: 12p; Illustrations: 8 Black and White Photographs, 1 Diagram, 1 Chart, 11 Graphs; Document Type: Article L3 - 10.1109/TPS.2006.875846 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21399933&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Demidov, Vladimir AU - DeJoseph, Jr., Charles AU - Kudryavtsev, Anatoly T1 - Nonlocal Effects in a Bounded Afterglow Plasma With Fast Electrons. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2006/06/02/Jun2006 Part 2 VL - 34 IS - 3 M3 - Article SP - 825 EP - 833 SN - 00933813 AB - Effects connected with nonlocality of the electron energy distribution function (EEDF in a bounded, afterglow plasma with fast electrons can lead to a significant (many times of Te /e) increase in the near-wall potential drop, even if the density of this fast group is only a small fraction of the total electron density. This can substantially change the near-wall sheath thickness and electric field. Nonlocal fast electrons which are partially trapped in the plasma volume can increase the rate of stepwise excitation, supply additional heating to slow electrons and reduce their diffusion cooling rate. Altering the source terms of these fast electrons, to change their production rate will, therefore, alter the near-wall sheath and, through modification of the EEDF, a number of plasma parameters. Another possibility of modifying the EEDF is by application of a negative potential to a portion of the plasma boundary. This can allow modification of the past part of the EEDF. The above effects and methods can be used in various research and technical applications. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON distribution KW - ELECTRON transport KW - ELECTRIC fields KW - ELECTRONS -- Diffusion KW - PLASMA sheaths KW - PLASMA (Ionized gases) KW - Afterglow plasma KW - diffusion cooling KW - electron energy distribution function (EEDF) KW - modeling KW - near-wall sheath KW - stepwise excitation N1 - Accession Number: 21399936; Demidov, Vladimir 1 DeJoseph, Jr., Charles 2 Kudryavtsev, Anatoly 3; Affiliation: 1: UES, Inc., Dayton, OH 45432 USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA 3: Institute of Physics, St. Petersburg State University, St. Petersburg 198904, Russia; Source Info: Jun2006 Part 2, Vol. 34 Issue 3, p825; Subject Term: ELECTRON distribution; Subject Term: ELECTRON transport; Subject Term: ELECTRIC fields; Subject Term: ELECTRONS -- Diffusion; Subject Term: PLASMA sheaths; Subject Term: PLASMA (Ionized gases); Author-Supplied Keyword: Afterglow plasma; Author-Supplied Keyword: diffusion cooling; Author-Supplied Keyword: electron energy distribution function (EEDF); Author-Supplied Keyword: modeling; Author-Supplied Keyword: near-wall sheath; Author-Supplied Keyword: stepwise excitation; Number of Pages: 9p; Illustrations: 3 Black and White Photographs, 1 Diagram, 10 Graphs; Document Type: Article L3 - 10.1109/TPS.2006.872338 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21399936&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McAree, Paul AU - Bodin, Lawrence AU - Ball, Michael AU - Segars, James T1 - Design of the federal express large package sort facility. JO - Annals of Operations Research JF - Annals of Operations Research Y1 - 2006/06// VL - 144 IS - 1 M3 - Article SP - 133 EP - 152 SN - 02545330 AB - In this paper, two mixed integer programming models, the Aggregate Bin Assignment Model (ABAM) and Aggregate Rack Assignment Model (ARAM), are developed for the analysis of possible large package sort facility designs for Federal Express Corporation. Applying the ABAM and RAM algorithm on the current topological design of the sort facility reduces the number of forklifts and total forklift travel time for accomplishing the sort by about 20%. Tests on 16 other configurations proposed by Federal Express indicated that savings of 33% with respect to the number of forklifts required and over 50% in the total forklift travel time when compared to the existing operations can be achieved. [ABSTRACT FROM AUTHOR] AB - Copyright of Annals of Operations Research is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BUSINESS logistics KW - MATERIALS handling KW - INTEGER programming KW - WAREHOUSES -- Management KW - Heuristic algorithm KW - Mixed integer program KW - FEDERAL Express Corp. N1 - Accession Number: 22081981; McAree, Paul 1 Bodin, Lawrence 2; Email Address: lbodin@rhsmith.umd.edu Ball, Michael 2 Segars, James 3; Affiliation: 1: United States Air Force, Washington, DC, USA 2: Robert H. Smith School of Business, University of Maryland, College Park, MD 20742, USA 3: Federal Express Corporation, Memphis, TE, USA; Source Info: Jun2006, Vol. 144 Issue 1, p133; Subject Term: BUSINESS logistics; Subject Term: MATERIALS handling; Subject Term: INTEGER programming; Subject Term: WAREHOUSES -- Management; Author-Supplied Keyword: Heuristic algorithm; Author-Supplied Keyword: Mixed integer program; Company/Entity: FEDERAL Express Corp. DUNS Number: 058070459; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; NAICS/Industry Codes: 493190 Other Warehousing and Storage; NAICS/Industry Codes: 493110 General Warehousing and Storage; NAICS/Industry Codes: 236220 Commercial and Institutional Building Construction; Number of Pages: 20p; Illustrations: 9 Diagrams, 7 Charts, 6 Graphs; Document Type: Article L3 - 10.1007/s10479-006-0005-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22081981&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Leungsakul, Thammajun AU - Johnson, Glenn R. AU - Wood, Thomas K. T1 - Protein Engineering of the 4-Methyl-5-Nitrocatechol Monooxygenase from Burkholderia sp. Strain DNT for Enhanced Degradation of Nitroaromatics. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2006/06// VL - 72 IS - 6 M3 - Article SP - 3933 EP - 3939 SN - 00992240 AB - 4-Methyl-5-nitrocatechol (4M5NC) monooxygenase (DntB) from Burkholderia sp. strain DNT catalyzes the second step of 2,4-dinitrotoluene degradation by converting 4M5NC to 2-hydroxy-5-methylquinone with the concomitant removal of the nitro group. DntB is a flavoprotein that has a very narrow substrate range. Here, error-prone PCR was used to create variant DntB M22L/L380I, which accepts the two new substrates 4-nitrophenol (4NP) and 3-methyl-4-nitrophenol (3M4NP). At 300 μM of 4NP, the initial rate of the variant expressing M22L/L380I enzyme (39 ± 6 nmol/min/mg protein) was 10-fold higher than that of the wild-type enzyme (4 ± 2 nmol/min/mg protein). The values of kcat/Km of the purified wild-type DntB enzyme and purified variant M22L/L380I were 40 and 450 (s-1 M-1), respectively, which corroborates that the variant M22L/L380I enzyme has 11-fold-higher efficiency than the wild-type enzyme for 4NP degradation. In addition, the variant M22L/L380I enzyme has fourfold-higher activity toward 3M4NP; at 300 μM, the initial nitrite release rate of M22L/L380I enzyme was 17 ± 4 nmol/min/mg protein, while that of the wild-type enzyme was 4.4 ± 0.7 nmol/min/mg protein. Saturation mutagenesis was also used to further investigate the role of the individual amino acid residues at positions M22, L380, and M22/L380 simultaneously. Mutagenesis at the individual positions M22L and L380I did not show appreciable enhancement in 4NP activity, which suggested that these two sites should be mutated together; simultaneous saturation mutagenesis led to the identification of the variant M22S/L380V, with 20% enhanced degradation of 4NP compared to the variant M22L/L380I. This is the first report of protein engineering for nitrite removal by a flavoprotein. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONOOXYGENASES KW - NITROAROMATIC compounds KW - POLYMERASE chain reaction KW - NITROPHENOLS KW - NITRO compounds KW - ENZYMES KW - MUTAGENESIS KW - PROTEIN engineering KW - FLAVOPROTEINS KW - MICROBIOLOGY KW - MICROBIAL ecology N1 - Accession Number: 21366082; Leungsakul, Thammajun 1,2,3,4 Johnson, Glenn R. 5 Wood, Thomas K. 1,2,3; Email Address: Thomas.Wood@chemail.tamu.edu; Affiliation: 1: Artie McFerrin Department of Chemical Engineering, 220 Jack E. Brown Building Texas A&M University, College Station, Texas 77843-3122 2: Department of Biology, 220 Jack E. Brown Building Texas A&M University, College Station, Texas 77843-3122 3: Department of and Civil/Environmental Engineering, 220 Jack E. Brown Building Texas A&M University, College Station, Texas 77843-3122 4: Sirindhorn International Institute of Technology, School of Bio-Chemical Engineering and Technology, Thammasat University, P.O. Box 22, Thammasat Rangsit Post Office, Pathumthani 12121, Thailand 5: Air Force Research Laboratory, U.S. Air Force, Tyndall Air Force Base, Florida 324032; Source Info: Jun2006, Vol. 72 Issue 6, p3933; Subject Term: MONOOXYGENASES; Subject Term: NITROAROMATIC compounds; Subject Term: POLYMERASE chain reaction; Subject Term: NITROPHENOLS; Subject Term: NITRO compounds; Subject Term: ENZYMES; Subject Term: MUTAGENESIS; Subject Term: PROTEIN engineering; Subject Term: FLAVOPROTEINS; Subject Term: MICROBIOLOGY; Subject Term: MICROBIAL ecology; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 7p; Illustrations: 4 Charts; Document Type: Article L3 - 10.1128/AEM.02966-05 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21366082&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, J. E. AU - Patterson, E. S. AU - Woods, D. D. T1 - Elicitation by critiquing as a cognitive task analysis methodology. JO - Cognition, Technology & Work JF - Cognition, Technology & Work Y1 - 2006/06// VL - 8 IS - 2 M3 - Article SP - 90 EP - 102 SN - 14355558 AB - This paper describes elicitation by critiquing (EBC) as a cognitive task analysis (CTA) methodology. EBC takes advantage of the ability to analyze another’s task performance, a necessary skill for all domains. This technique can be used to help address some barriers to CTA methods such as domain access restrictions, frequency and predictability of observable and self-reported events, and difficulties in recruiting domain experts to participate. The technique enables controlled presentation of problem stimuli in order to obtain repeated measuring of the same task from multiple participants. To investigate this method, our team performed a CTA of inferential analysis using the EBC technique. Specifically, we observed six expert intelligence analysts critiquing a trainee analyzing the Ariane 501 launch failure. A second trainee was critiqued for reference. The method can be combined with other CTA methods to build knowledge about a domain, can be considered as an addition to participatory design methods, and can be varied depending on the domain being investigated. [ABSTRACT FROM AUTHOR] AB - Copyright of Cognition, Technology & Work is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TASK analysis KW - METHODOLOGY KW - AERONAUTICS KW - PROBLEM solving KW - EVALUATION KW - PERFORMANCE KW - Cognitive task analysis KW - Critiquing KW - Ethnographic observation KW - Interview KW - Knowledge elicitation N1 - Accession Number: 21139634; Miller, J. E. 1; Email Address: Janet.Miller3@wpafb.af.mil Patterson, E. S. 2 Woods, D. D. 3; Email Address: woods.2@osu.edu; Affiliation: 1: Air Force Research Laboratory, Human Effectiveness Directorate, Wright-Patterson AFB, Ohio, USA 2: Veteran's Administration Getting at Patient Safety Center, Cincinnati, Ohio, USA 3: Institute for Ergonomics, Ohio State University, Columbus, Ohio, USA; Source Info: Jun2006, Vol. 8 Issue 2, p90; Subject Term: TASK analysis; Subject Term: METHODOLOGY; Subject Term: AERONAUTICS; Subject Term: PROBLEM solving; Subject Term: EVALUATION; Subject Term: PERFORMANCE; Author-Supplied Keyword: Cognitive task analysis; Author-Supplied Keyword: Critiquing; Author-Supplied Keyword: Ethnographic observation; Author-Supplied Keyword: Interview; Author-Supplied Keyword: Knowledge elicitation; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; Number of Pages: 13p; Illustrations: 5 Diagrams, 8 Charts; Document Type: Article L3 - 10.1007/s10111-005-0023-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21139634&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mall, Shankar AU - Engesser, John Mark T1 - Effects of frequency on fatigue behavior of CVI C/SiC at elevated temperature JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2006/06// VL - 66 IS - 7/8 M3 - Article SP - 863 EP - 874 SN - 02663538 AB - Abstract: Effects of frequency on fatigue behavior of a chemical vapor infiltrated carbon fiber reinforced silicon carbide composite (C/SiC) were investigated at an elevated temperature of 550°C. Tension–tension fatigue tests were conducted at three frequencies: 0.1, 10 and 375Hz to establish stress versus cycles to failure (S–N) relationships. There was an increase in cycles to failure at a given stress level as frequency increased from 0.1 to 375Hz at elevated temperature. This trend was different at room temperature where cycles to failure decreased when frequency changed from 40 to 375Hz but remained almost same below 40Hz. There was a reduction in cycles to failure at frequencies less than 40Hz but cycles to failure remained same at a higher frequency of 375Hz when test environment changed from room temperature to 550°C. Analysis of damage mechanisms showed that the oxidation of carbon fibers was the major difference between the room and elevated temperatures, which caused a reduction in cycles to failure with lower frequencies at elevated temperature in comparison to that at room temperature. However, oxidation of carbon fibers was almost absent or negligible at higher frequency at elevated temperature, which caused practically no reduction in cycles to failure at elevated temperature in comparison to their counterparts at room temperature. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TECHNICAL chemistry KW - CHEMICAL vapor deposition KW - SILICON carbide KW - OXIDATION KW - Carbon/Silicon carbide KW - Ceramics matrix composites KW - Elevated temperature KW - Fatigue KW - Frequency effects N1 - Accession Number: 20186610; Mall, Shankar 1; Email Address: Shankar.Mall@afit.edu Engesser, John Mark 1,2; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology, Building 640, 2950 Hobson Way, Wright-Patterson AFB, OH 45433-7765, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Jun2006, Vol. 66 Issue 7/8, p863; Subject Term: TECHNICAL chemistry; Subject Term: CHEMICAL vapor deposition; Subject Term: SILICON carbide; Subject Term: OXIDATION; Author-Supplied Keyword: Carbon/Silicon carbide; Author-Supplied Keyword: Ceramics matrix composites; Author-Supplied Keyword: Elevated temperature; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Frequency effects; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.compscitech.2005.06.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20186610&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Byrd, Larry W. AU - Birman, Victor T1 - Effectiveness of z-pins in preventing delamination of co-cured composite joints on the example of a double cantilever test JO - Composites: Part B, Engineering JF - Composites: Part B, Engineering Y1 - 2006/06// VL - 37 IS - 4/5 M3 - Article SP - 365 EP - 378 SN - 13598368 AB - Abstract: The effectiveness of z-pins in co-cured joints is illustrated on the model of a composite double cantilever beam (DCB) subject to a standard fracture toughness test. A comprehensive solution is presented in the paper accounting for a broad spectrum of issues that affect the problem. They include the accurate evaluation of the rotational constraint provided by the intact section of DCB, possible transverse shear deformation in the delaminated section, and effects of uniform and nonuniform temperature on the response. A simple criterion for the effectiveness of z-pins in co-cured joint is introduced and its application is illustrated on numerous examples. As follows from the analysis, z-pinning is an effective method of enhancing delamination resistance of composite joints. Even a very small volume fraction of z-pins (less than 1.5%) may arrest delamination in co-cured composite joints. [Copyright &y& Elsevier] AB - Copyright of Composites: Part B, Engineering is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPOSITE materials -- Delamination KW - GIRDERS KW - CURING KW - CHEMICAL processes KW - A. Fracture toughness KW - Laminates KW - Polymer matrix composites (PMCS) N1 - Accession Number: 20014039; Byrd, Larry W. 1 Birman, Victor 2; Affiliation: 1: Air Force Research Laboratory, AFRL/VASM, Building 65, 2700 D Street, Wright-Patterson Air Force Base, OH 45433, USA 2: Engineering Education Center, University of Missouri-Rolla, One University Boulevard, St Louis, MO 63121, USA; Source Info: Jun2006, Vol. 37 Issue 4/5, p365; Subject Term: COMPOSITE materials -- Delamination; Subject Term: GIRDERS; Subject Term: CURING; Subject Term: CHEMICAL processes; Author-Supplied Keyword: A. Fracture toughness; Author-Supplied Keyword: Laminates; Author-Supplied Keyword: Polymer matrix composites (PMCS); Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.compositesb.2005.05.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20014039&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Polak, M. AU - Demencik, E. AU - Jansak, L. AU - Usak, E. AU - Mozola, P. AU - Thieme, C. L. H. AU - Aized, D. AU - Levin, G. A. AU - Barnes, P. N. T1 - Properties of a YBCO Pancake Coil Operating With AC Current at Frequencies up to 1000 Hz. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2006/06// VL - 16 IS - 2 M3 - Article SP - 1423 EP - 1426 SN - 10518223 AB - A small pancake coil was wound using 1.2 m long, 10 mm wide YBCO coated superconductor tape with impregnation by epoxy resin. The coil was immersed in liquid nitrogen and tested in several regimes. In the DC regime, we measured the I–V curve, the hysteresis of the magnetic field-current curve at liquid nitrogen temperature and the radial component of the coil field at the coil edges. The critical currents of a short sample at 77 K were also measured and compared with those of the coil. The AC losses measured in the frequency range from 60 Hz to 1000 Hz are compared with those of a similar coil wound with copper tape. The coil heating due to AC losses was monitored. At 60 Hz, the losses of the YBCO coil were nearly two orders of magnitude lower than those in the Cu coil. With increasing frequency, this difference becomes smaller, but the YBCO coil still exhibited lower losses at 1000 Hz. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPOXY resins KW - MAGNETIC fields KW - MAGNETIC induction KW - SUPERCONDUCTIVITY KW - LIQUID nitrogen KW - HIGH temperature superconductors KW - Losses KW - magnetic fields KW - superconducting magnets N1 - Accession Number: 23036020; Polak, M. 1; Email Address: elekpola@savba.sk Demencik, E. 1 Jansak, L. 1 Usak, E. 1 Mozola, P. 1 Thieme, C. L. H. 2; Email Address: CThieme@amsuper.com Aized, D. 2 Levin, G. A. 3 Barnes, P. N. 3; Email Address: paul.bames@wpafb.af.mil; Affiliation: 1: Institute of Electrical Engineering, Slovak Academy of Sciences, 841 04 Bratislava, Slovakia 2: American Superconductor Corporation, Westborough, MA 01581 USA 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433 USA; Source Info: Jun2006, Vol. 16 Issue 2, p1423; Subject Term: EPOXY resins; Subject Term: MAGNETIC fields; Subject Term: MAGNETIC induction; Subject Term: SUPERCONDUCTIVITY; Subject Term: LIQUID nitrogen; Subject Term: HIGH temperature superconductors; Author-Supplied Keyword: Losses; Author-Supplied Keyword: magnetic fields; Author-Supplied Keyword: superconducting magnets; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; Number of Pages: 4p; Illustrations: 1 Black and White Photograph, 8 Graphs; Document Type: Article L3 - 10.1109/TASC.2006.870774 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23036020&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coutu Jr., Ronald A. AU - Reid, James R. AU - Cortez, Rebecca AU - Strawser, Richard E. AU - Kladitis, Paul E. T1 - Microswitches with Sputtered Au, AuPd, Au-on-AuPt, and AuPtCu Alloy Electric Contacts. JO - IEEE Transactions on Components & Packaging Technologies JF - IEEE Transactions on Components & Packaging Technologies Y1 - 2006/06// VL - 29 IS - 2 M3 - Article SP - 341 EP - 349 SN - 15213331 AB - This paper is the first to report on a new analytic model for predicting microcontact resistance and the design, fabrication, and testing of microelectromechanical systems (MEMS) metal contact switches with sputtered bimetallic (i.e., gold (Au)-on-Au-platinum (Pt), (Au-on-Au-(6.3at%)Pt)), binary alloy (i.e., Au-palladium (Pd), (Au-(3.7at%)Pd)), and ternary alloy (i.e., Au-Pt-copper (Cu), (Au-(5.0at%)Pt-(0.5at%)Cu)) electric contacts. The microswitches with bimetallic and binary alloy contacts resulted in contact resistance values between 1-2 Ω. Preliminary reliability testing indicates a 3x increase in switching lifetime when compared to microswitches with sputtered Au electric contacts. The ternary alloy exhibited approximately a 6x increase in switch lifetime with contact resistance values ranging from approximately 0.2-1.8 Ω. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Components & Packaging Technologies is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTROMECHANICAL systems KW - ELECTRIC switchgear KW - ELECTRIC contacts KW - ELECTRIC resistance KW - GOLD KW - Alloys KW - electric contacts KW - microelectromechanical system (MEMS) KW - microswitch N1 - Accession Number: 21109678; Coutu Jr., Ronald A. 1; Email Address: rscoutu@earthlink.net Reid, James R. 2 Cortez, Rebecca 1 Strawser, Richard E. 1 Kladitis, Paul E. 1; Affiliation: 1: Aerospace Components Division, U.S. Air Force Research Laboratory's (AFRL) Sensors Directorate, Wright Patterson AFB, OH, USA 2: Antenna Technology Branch, Air Force Research Laboratory, Hanscom AFB, MA, USA; Source Info: Jun2006, Vol. 29 Issue 2, p341; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: ELECTRIC switchgear; Subject Term: ELECTRIC contacts; Subject Term: ELECTRIC resistance; Subject Term: GOLD; Author-Supplied Keyword: Alloys; Author-Supplied Keyword: electric contacts; Author-Supplied Keyword: microelectromechanical system (MEMS); Author-Supplied Keyword: microswitch; NAICS/Industry Codes: 335313 Switchgear and Switchboard Apparatus Manufacturing; NAICS/Industry Codes: 335315 Switchgear and switchboard, and relay and industrial control apparatus manufacturing; NAICS/Industry Codes: 335930 Wiring device manufacturing; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 335931 Current-Carrying Wiring Device Manufacturing; Number of Pages: 9p; Illustrations: 5 Diagrams, 1 Chart, 6 Graphs; Document Type: Article L3 - 10.1109/TCAPT.2006.875898 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21109678&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - White, William M. AU - Gilgenbach, Ronald M. AU - Jones, Michael C. AU - Neculaes, V. Bogdan AU - Yue Ying Lau AU - Pengvanich, P. AU - Jordan, Nicholas M. C. AU - Hoff, Brad W. AU - Edgar, Ryan AU - Spencer, Thomas A. AU - Price, David T1 - Radio Frequency Priming of a Long-Pulse Relativistic Magnetron. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2006/06//Jun2006 Part 1 VL - 34 IS - 3 M3 - Article SP - 627 EP - 634 SN - 00933813 AB - Rapid startup, increased pulsewidth, and mode locking of magnetrons have been explored experimentally on a relativistic magnetron by radio frequency (RF) priming. Experiments utilize a -300 kV, 2-8 kA, 300-500-ns electron beam to drive a Titan six-vane relativistic magnetron (5-100 MW output power in each of the three waveguides). The RF priming source is a 100-kW pulsed magnetron operating at 1.27-1.32 GHz. Tuning stubs are utilized in the Titan structure to adjust the frequency of the relativistic magnetron to match that of the priming source. Experiments are performed on rising sun as well as standard anode configurations. Magnetron start-oscillation time, pulsewidth, and π-mode locking are compared with RF priming versus the unprimed case. The results show significant reductions in microwave output delay and mode competition even when Adler's Relation is not satisfied. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO frequency KW - MAGNETRONS KW - ELECTRIC oscillators KW - WAVEGUIDES KW - ELECTRON beams KW - ELECTRON emission KW - High-power microwaves KW - magnetrons KW - priming KW - pulse shortening N1 - Accession Number: 21399917; White, William M. 1 Gilgenbach, Ronald M. 2; Email Address: rongilg@umich.edu Jones, Michael C. 3 Neculaes, V. Bogdan 4 Yue Ying Lau 2 Pengvanich, P. 2 Jordan, Nicholas M. C. 2 Hoff, Brad W. 2 Edgar, Ryan 2 Spencer, Thomas A. 5 Price, David 6; Affiliation: 1: Ktech Corporation, Albuquerque, NM 87185 USA 2: Plasma, Pulsed-Power and Microwave Laboratory, Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, MI 48109 USA 3: Sandia National Laboratories, Albuquerque, NM 87185 USA 4: GE Global Research Center, Niskayuna, NY 12309 USA 5: Air Force Research Laboratory, Kirtland AFB, NM 87117 USA 6: L-3 Communications Titan Corporation, San Leandro, CA 94577 USA; Source Info: Jun2006 Part 1, Vol. 34 Issue 3, p627; Subject Term: RADIO frequency; Subject Term: MAGNETRONS; Subject Term: ELECTRIC oscillators; Subject Term: WAVEGUIDES; Subject Term: ELECTRON beams; Subject Term: ELECTRON emission; Author-Supplied Keyword: High-power microwaves; Author-Supplied Keyword: magnetrons; Author-Supplied Keyword: priming; Author-Supplied Keyword: pulse shortening; Number of Pages: 8p; Illustrations: 8 Black and White Photographs, 1 Diagram, 2 Charts, 9 Graphs; Document Type: Article L3 - 10.1109/TPS.2006.875829 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21399917&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morris, T.A. AU - Marciniak, M.A. AU - Wollenweber, G.C. AU - Turk, J.A. T1 - Analysis of uncertainties in infrared camera measurements of a turbofan engine in an altitude test cell JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2006/06// VL - 48 IS - 2 M3 - Article SP - 130 EP - 153 SN - 13504495 AB - Abstract: The infrared (IR) signature of a jet aircraft engine in altitude operation is a key component for the design of effective IR countermeasures and low-emission engines. Predicting the signature with radiometric models is widely accomplished, but measurements in situ are crucial for model verification. The altitude test cell provides a venue for measuring the IR signature in a simulated altitude environment, but the facility is designed for testing engines, not IR imaging. As a result, the imaging in the test cell is laden with measurement uncertainty due to stray radiation from the facility structure, hot exhaust gases, and the measurement equipment itself. Post-processing using correction factors is necessary to extract the engine signal from the stray radiation. This research investigated the uncertainties in measuring the IR signature of a turbofan engine inside an altitude test cell. The engine is measured by an IR camera immersed in the hot exhaust gases 35 feet downstream from the on-engine axis view. A protective enclosure and zinc selenide (ZnSe) window shield the camera from the heat and vibrations of the plume. The requirements for the IR measurement system include the apparent intensity and radiance of the visible engine surfaces in three bands of operation, two Medium Wave IR (MWIR) bands and one Long Wave IR (LWIR), with a spatial resolution of 1in. To explore the extent of the measurement uncertainties, a radiometric model of the altitude test cell is formulated to quantify the engine and stray flux. To increase the fidelity of the model, the ZnSe window, a source of stray radiation, is characterized through measurements and experimentation. The resulting data is employed in the radiometric model. Specific measurement conditions at which the stray radiation is 5% or less of the total radiation are then derived, thereby decreasing the necessity for post-processing correction factors. These conditions are derived for the 3–4-, 4.5–5-, 8–9- and 8–12-μm bands using a parametric analysis. Two LWIR bands are considered to provide insight into specific previous measurements made with a quantum-well IR photo-detector (QWIP, roughly 8–9μm), as well as potential future measurements made using broader band imagers (e.g., HgCdTe at 8–12μm). A sensitivity analysis in the style of a Monte Carlo simulation is also performed to gauge the uncertainty in the radiometric model calculations. [Copyright &y& Elsevier] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MEDICAL equipment KW - INFRARED radiation KW - WASTE gases KW - AIRPLANES -- Motors KW - Altitude test cell KW - Infrared optical systems KW - Infrared radiation KW - Infrared windows KW - Parametric analysis KW - Reflectance KW - Spectral emittance KW - Transmittance KW - Turbofan engines N1 - Accession Number: 20966063; Morris, T.A. 1,2 Marciniak, M.A. 1; Email Address: michael.marciniak@afit.edu Wollenweber, G.C. 3 Turk, J.A. 2; Affiliation: 1: Air Force Institute of Technology, Department of Engineering Physics, Wright-Patterson AFB, OH 45433, USA 2: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH 45433, USA 3: GE Aircraft Engines, Military Inlet and Exhaust Systems, Cincinnati, OH 45215, USA; Source Info: Jun2006, Vol. 48 Issue 2, p130; Subject Term: MEDICAL equipment; Subject Term: INFRARED radiation; Subject Term: WASTE gases; Subject Term: AIRPLANES -- Motors; Author-Supplied Keyword: Altitude test cell; Author-Supplied Keyword: Infrared optical systems; Author-Supplied Keyword: Infrared radiation; Author-Supplied Keyword: Infrared windows; Author-Supplied Keyword: Parametric analysis; Author-Supplied Keyword: Reflectance; Author-Supplied Keyword: Spectral emittance; Author-Supplied Keyword: Transmittance; Author-Supplied Keyword: Turbofan engines; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 339110 Medical equipment and supplies manufacturing; NAICS/Industry Codes: 339112 Surgical and Medical Instrument Manufacturing; NAICS/Industry Codes: 417930 Professional machinery, equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423450 Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 24p; Document Type: Article L3 - 10.1016/j.infrared.2005.07.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20966063&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yu-hui Chiu AU - Austin, Brad L. AU - Williams, Skip AU - Dressler, Rainer A. AU - Karabadzhak, George F. T1 - Passive optical diagnostic of Xe-propelled Hall thrusters. I. Emission cross sections. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2006/06//6/1/2006 VL - 99 IS - 11 M3 - Article SP - 113304 PB - American Institute of Physics SN - 00218979 AB - This paper presents a set of xenon apparent emission excitation cross sections for emission lines that have diagnostic value in the analysis of Xe-propelled Hall thruster plasmas. Emission cross sections are presented for three excitation processes involving ground-state xenon atoms: e-+Xe, Xe++Xe, and Xe2++Xe. The cross sections are derived from luminescence spectra produced at single-collision conditions. Apparent emission excitation cross sections are tabulated for 12 visible and 8 near-infrared lines for electron energies ranging from 10 to 70 eV. In case of the near-infrared lines, radiation trapping effects are accounted for by measuring the detailed pressure dependence of the apparent emission cross sections and extrapolating to zero pressure. A semiempirical expression for the pressure dependence is derived that allows zero-pressure extrapolation from threshold to 70 eV. Ion-induced cross sections are reported for the same emission lines at an energy per unit charge E/q of 300 eV, chosen for typical Hall thruster operating voltages. Radiation trapping effects are negligible for the ion emission excitation cross sections between 0.1 and 2.0 mTorr in the present luminescence experiment. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - XENON KW - ELECTRONIC excitation KW - PLASMA (Ionized gases) KW - EMISSIONS (Air pollution) KW - RADIATION trapping N1 - Accession Number: 21300036; Yu-hui Chiu 1 Austin, Brad L. 1 Williams, Skip 1 Dressler, Rainer A. 1 Karabadzhak, George F. 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731 2: TSNIIMASH, Pionerskaya 4, Korolev, Moscow region, 141070, Russia; Source Info: 6/1/2006, Vol. 99 Issue 11, p113304; Subject Term: XENON; Subject Term: ELECTRONIC excitation; Subject Term: PLASMA (Ionized gases); Subject Term: EMISSIONS (Air pollution); Subject Term: RADIATION trapping; Number of Pages: 11p; Illustrations: 1 Diagram, 3 Charts, 6 Graphs; Document Type: Article L3 - 10.1063/1.2195018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21300036&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Karabadzhak, George F. AU - Yu-hui Chiu AU - Dressler, Rainer A. T1 - Passive optical diagnostic of Xe propelled Hall thrusters. II. Collisional-radiative model. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2006/06//6/1/2006 VL - 99 IS - 11 M3 - Article SP - 113305 PB - American Institute of Physics SN - 00218979 AB - A collisional radiative model is presented for analyzing the xenon-propelled Hall thruster optical radiation based on apparent electron and ion-impact emission cross sections associated with lines in the visible and near-infrared region of the spectrum. The emission cross sections of selected near-infrared emission lines are incorporated in a collisional-radiative model. The effect of stepwise excitation via metastable states on the derived line intensities for emissions from XeI 5p56p(6p′) levels is evaluated. Meanwhile, visible XeII emissions are shown to provide plasma densities at high electron temperature conditions. The electron temperature and spatial ion number density distribution were determined from the luminescence spectra measured in the discharge and plume near-field plasma of the Hall thruster, the TSNIIMASH D-55 anode layer thruster. The results are in good agreement with the probe measurement data and simulations reported in the literature for the same thruster. The analysis of the Hall thruster XeI near-infrared spectra demonstrates that the neglect of ion-atom collisions results in an erroneous electron temperature determination at electron temperatures below 10 eV. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - XENON KW - ELECTRONIC excitation KW - PLASMA (Ionized gases) KW - EMISSIONS (Air pollution) KW - INFRARED spectra N1 - Accession Number: 21300037; Karabadzhak, George F. 1 Yu-hui Chiu 2 Dressler, Rainer A. 2; Email Address: dressler@hanscom.af.mil; Affiliation: 1: TSNIIMASH, Pionerskaya 4, Korolev, Moscow 141070, Russia 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731; Source Info: 6/1/2006, Vol. 99 Issue 11, p113305; Subject Term: XENON; Subject Term: ELECTRONIC excitation; Subject Term: PLASMA (Ionized gases); Subject Term: EMISSIONS (Air pollution); Subject Term: INFRARED spectra; Number of Pages: 12p; Illustrations: 2 Diagrams, 3 Charts, 9 Graphs; Document Type: Article L3 - 10.1063/1.2195019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21300037&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Buguo AU - Callahan, Michael J. T1 - Transport growth of GaN crystals by the ammonothermal technique using various nutrients JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2006/06// VL - 291 IS - 2 M3 - Article SP - 455 EP - 460 SN - 00220248 AB - Abstract: The nutrient transport direction for the growth of GaN crystals in ammonobasic solutions was investigated. Growth of GaN crystals via nutrient transport from the cold zone to the hot zone in alkaline solutions by the ammonothermal technique was confirmed using three kinds of nutrients: gallium metal, gallium-containing intermediates and polycrystalline GaN. Ga-containing intermediates are easily formed when using gallium metal or GaN as nutrient, and remain stable at temperatures below 400°C; GaN is deposited in the hot zone of the autoclave only at high temperatures greater than 500°C. Transport growth of GaN crystals from polycrystalline GaN nutrient in the cold zone to hydride vapor phase epitaxy (HVPE) seeds in the hot zone in alkali supercritical ammonia was also achieved. The study has clearly demonstrated that gallium-containing intermediates are the stable phases at lower temperatures, and that GaN bulk crystals (substrates) can be grown in the hot zone at high temperatures from ammonobasic solutions by the ammonothermal technique. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL growth KW - NITROGEN compounds KW - SEPARATION (Technology) KW - SEED pods KW - A1. Dissolution–crystallization model KW - A2. Nutrient transport KW - A2. The ammonothermal technique KW - B1. Gallium-containing intermediates (gallium-containing ternary amide or imide) KW - B1. GaN KW - B2. Phase relations N1 - Accession Number: 21052297; Wang, Buguo 1; Email Address: buguo@solidstatescientific.com Callahan, Michael J. 2; Affiliation: 1: Solid State Scientific Corporation, 27-2 Wright Road, Hollis, NH 03049, USA 2: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA; Source Info: Jun2006, Vol. 291 Issue 2, p455; Subject Term: CRYSTAL growth; Subject Term: NITROGEN compounds; Subject Term: SEPARATION (Technology); Subject Term: SEED pods; Author-Supplied Keyword: A1. Dissolution–crystallization model; Author-Supplied Keyword: A2. Nutrient transport; Author-Supplied Keyword: A2. The ammonothermal technique; Author-Supplied Keyword: B1. Gallium-containing intermediates (gallium-containing ternary amide or imide); Author-Supplied Keyword: B1. GaN; Author-Supplied Keyword: B2. Phase relations; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jcrysgro.2006.03.035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21052297&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mahfoud, Aziz AU - Sarangan, Andrew AU - Nelson, Thomas R. AU - Blubaugh, Elmo A. T1 - Role of aggregation in the amplified spontaneous emission of [2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylenevinylene] in solution and films JO - Journal of Luminescence JF - Journal of Luminescence Y1 - 2006/06// VL - 118 IS - 2 M3 - Article SP - 123 EP - 130 SN - 00222313 AB - Abstract: The amplified spontaneous emission (ASE) spectra of the conjugated polymer [2-methoxy-5-(2′- ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) is investigated under different conditions such as thin film and solution, solvent type and concentration. Results indicate that aggregation has a pronounced effect on ASE spectra. In solution form, as concentration was increased and thus the proportion of aggregates, a decrease in the ASE emission bandwidth and a red shift of the ASE peak was observed. For the thin film samples, the ASE spectra show two emission bands which were assigned to the first and second vibronic transition of the polymer chains. [Copyright &y& Elsevier] AB - Copyright of Journal of Luminescence is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONJUGATED polymers KW - ORGANIC semiconductors KW - SPECTRUM analysis KW - LUMINESCENCE KW - Amplified spontaneous emission KW - Conductive polymer KW - MEH-PPV KW - Photoluminescence N1 - Accession Number: 19784634; Mahfoud, Aziz 1; Email Address: mahfouaf@notes.udayton.edu Sarangan, Andrew 1 Nelson, Thomas R. 2 Blubaugh, Elmo A. 3; Affiliation: 1: Optoelectronics Laboratory, University of Dayton, Dayton, OH 45469-0245, USA 2: Sensors Directorate US Air Force Research Laboratory, Wright Patterson AFB, OH 45433-7322, USA 3: Sensors Group, Materials Engineering Department, University of Dayton Research Institute, OH 45469-0245, USA; Source Info: Jun2006, Vol. 118 Issue 2, p123; Subject Term: CONJUGATED polymers; Subject Term: ORGANIC semiconductors; Subject Term: SPECTRUM analysis; Subject Term: LUMINESCENCE; Author-Supplied Keyword: Amplified spontaneous emission; Author-Supplied Keyword: Conductive polymer; Author-Supplied Keyword: MEH-PPV; Author-Supplied Keyword: Photoluminescence; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jlumin.2005.08.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19784634&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jayakody, J.R.P. AU - Khalfan, A. AU - Mananga, E.S. AU - Greenbaum, S.G. AU - Dang, T.D. AU - Mantz, R. T1 - NMR investigation of water and methanol transport in sulfonated polyareylenethioethersulfones for fuel cell applications JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2006/06// VL - 156 IS - 2 M3 - Article SP - 195 EP - 199 SN - 03787753 AB - Abstract: We report an investigation of water and methanol transport in polymer electrolyte membranes based on highly sulfonated polyarelenethioethersulfones (SPTES) for direct methanol fuel cell (DMFC) applications. Measurements of both water and methanol self-diffusion coefficients of SPTES polymer as well as in a reference sample of Nafion-117 equilibrated in 2M methanol solution have been carried out, using the pulsed gradient spin echo technique, over a temperature range of 20–140°C. The selectivity of the membrane, defined as (D OH/D CH3), decreased from 6 to 2.4 as temperature increased from 20 to 140°C in SPTES sample while in Nafion, the value decreased from 3.2 to 1.4 as temperature increased from 20 to 100°C. These results indicate significantly lower fuel molecular permeability in SPTES compared to that of Nafion. All results suggest high-temperature stability in these materials, offering the possibility of fuel cell operation at temperatures >120°C. High pressure NMR diffusion measurements were also carried out for three different water contents (between 20 and 55wt.%) in a static field gradient in order to get supplemental information regarding water transport in SPTES materials. The calculated activation volume increased from 1.54 to 8.40cm3/mol as the water content decreased from 55 to 20%. This behavior is qualitatively similar to previously reported results for Nafion-117. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYELECTROLYTES KW - FUEL cells KW - ELECTRIC batteries KW - NUCLEAR magnetic resonance KW - Direct methanol fuel cells KW - Methanol transport KW - Polymer electrolyte membranes KW - Pulse gradient spin-echo nuclear magnetic resonance diffusion KW - Water transport N1 - Accession Number: 20962373; Jayakody, J.R.P. 1 Khalfan, A. 1 Mananga, E.S. 1 Greenbaum, S.G. 1; Email Address: steve.greenbaum@hunter.cuny.edu Dang, T.D. 2 Mantz, R. 2; Affiliation: 1: Hunter College of the City University of New York, Physics Department, 695 Park Avenue, New York, NY 10021, USA 2: US Air Force Research Laboratory, Materials and Manufacturing, Wright-Patterson AFB, OH 45433, USA; Source Info: Jun2006, Vol. 156 Issue 2, p195; Subject Term: POLYELECTROLYTES; Subject Term: FUEL cells; Subject Term: ELECTRIC batteries; Subject Term: NUCLEAR magnetic resonance; Author-Supplied Keyword: Direct methanol fuel cells; Author-Supplied Keyword: Methanol transport; Author-Supplied Keyword: Polymer electrolyte membranes; Author-Supplied Keyword: Pulse gradient spin-echo nuclear magnetic resonance diffusion; Author-Supplied Keyword: Water transport; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 335910 Battery manufacturing; NAICS/Industry Codes: 418990 All other merchant wholesalers; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jpowsour.2005.05.056 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20962373&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wightman, Frederic AU - Kistler, Doris AU - Brungart, Douglas T1 - Informational masking of speech in children: Auditory-visual integration. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2006/06// VL - 119 IS - 6 M3 - Article SP - 3940 EP - 3949 SN - 00014966 AB - The focus of this study was the release from informational masking that could be obtained in a speech task by viewing a video of the target talker. A closed-set speech recognition paradigm was used to measure informational masking in 23 children (ages 6–16 years) and 10 adults. An audio-only condition required attention to a monaural target speech message that was presented to the same ear with a time-synchronized distracter message. In an audiovisual condition, a synchronized video of the target talker was also presented to assess the release from informational masking that could be achieved by speechreading. Children required higher target/distracter ratios than adults to reach comparable performance levels in the audio-only condition, reflecting a greater extent of informational masking in these listeners. There was a monotonic age effect, such that even the children in the oldest age group (12–16.9 years) demonstrated performance somewhat poorer than adults. Older children and adults improved significantly in the audiovisual condition, producing a release from informational masking of 15 dB or more in some adult listeners. Audiovisual presentation produced no informational masking release for the youngest children. Across all ages, the benefit of a synchronized video was strongly associated with speechreading ability. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPEECH KW - CHILDREN -- Language KW - SPEECH perception KW - AGE groups KW - AUDITORY perception N1 - Accession Number: 21126568; Wightman, Frederic 1; Email Address: fred.wightman@louisville.edu Kistler, Doris 1 Brungart, Douglas 2; Affiliation: 1: Heuser Hearing Institute and Department of Psychological and Brain Sciences, University of Louisville, Louisville, Kentucky 40292 2: Human Effectiveness Directorate, Air Force Research Laboratory, 2610 Seventh Street Wright Patterson AFB, OH 45433; Source Info: Jun2006, Vol. 119 Issue 6, p3940; Subject Term: SPEECH; Subject Term: CHILDREN -- Language; Subject Term: SPEECH perception; Subject Term: AGE groups; Subject Term: AUDITORY perception; Number of Pages: 10p; Illustrations: 8 Graphs; Document Type: Article L3 - 10.1121/1.2195121 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21126568&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schwertner, Harvey A. AU - Rios, Deborah C. AU - Pascoe, Joshua E. T1 - Variation in Concentration and Labeling of Ginger Root Dietary Supplements. JO - Obstetrics & Gynecology JF - Obstetrics & Gynecology Y1 - 2006/06// VL - 107 IS - 6 M3 - Article SP - 1337 EP - 1343 SN - 00297844 AB - The article examines the variation in 6-gingerol, 6-shogaol, 8-gingerol, and 10-gingerol concentrations and labeling of different brands of ginger root dietary supplements. Results suggest that there is a wide variation in the gingerol composition and in the suggested serving sizes of ginger root powder from different manufacturers. KW - DIETARY supplements KW - GINGER KW - LABELS KW - NUTRITION KW - VITAMINS KW - THERAPEUTIC use N1 - Accession Number: 23366042; Schwertner, Harvey A. 1; Email Address: harvey.schwertner@lackland.af.mil Rios, Deborah C. 1 Pascoe, Joshua E. 1; Affiliation: 1: Clinical Research, Wilford Hall Medical Center, Lackland AFB, Texas; Department of Science, Castle Hills First Baptist School, San Antonio, Texas; and Department of Chemistry, United States Air Force Academy, Colorado; Source Info: Jun2006, Vol. 107 Issue 6, p1337; Subject Term: DIETARY supplements; Subject Term: GINGER; Subject Term: LABELS; Subject Term: NUTRITION; Subject Term: VITAMINS; Subject Term: THERAPEUTIC use; NAICS/Industry Codes: 446191 Food (Health) Supplement Stores; NAICS/Industry Codes: 414510 Pharmaceuticals and pharmacy supplies merchant wholesalers; NAICS/Industry Codes: 323111 Commercial Printing (except Screen and Books); NAICS/Industry Codes: 323119 Other printing; NAICS/Industry Codes: 561910 Packaging and Labeling Services; NAICS/Industry Codes: 325411 Medicinal and Botanical Manufacturing; Number of Pages: 7p; Illustrations: 2 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23366042&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, Martin T1 - Our Endangered Values: America's Moral Crisis. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College Y1 - 2006///Summer2006 VL - 36 IS - 2 M3 - Book Review SP - 124 EP - 126 SN - 00311723 AB - The article reviews the book "Our Endangered Values: America's Moral Crisis," by Jimmy Carter. KW - SOCIAL values KW - NONFICTION KW - CARTER, Jimmy, 1924- KW - OUR Endangered Values: America's Moral Crisis (Book) N1 - Accession Number: 21101073; Cook, Martin 1; Affiliation: 1: Professor of Philosophy, US Air Force Academy; Source Info: Summer2006, Vol. 36 Issue 2, p124; Subject Term: SOCIAL values; Subject Term: NONFICTION; Reviews & Products: OUR Endangered Values: America's Moral Crisis (Book); People: CARTER, Jimmy, 1924-; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21101073&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ram-Mohan, L.R. AU - Girgis, A.M. AU - Albrecht, J.D. AU - Litton, C.W. T1 - Wavefunction engineering of layered wurtzite semiconductors grown along arbitrary crystallographic directions JO - Superlattices & Microstructures JF - Superlattices & Microstructures Y1 - 2006/06// VL - 39 IS - 6 M3 - Article SP - 455 EP - 477 SN - 07496036 AB - Abstract: The electronic band structure of wurtzite semiconductor heterostructures is investigated theoretically using the envelope function formalism. We use a Lagrangian formulation for the valence bands so that the order of the derivatives appearing in the multiband description is explicitly specified when Schrödinger’s equations for the envelope functions are generated through the application of the principle of least action. The issues of derivative operator ordering and boundary conditions at material interfaces are examined in detail. The theoretical results are presented for arbitrary growth directions and the spin–orbit interaction is taken into account. This is of interest, for example, in treating -plane wurtzite heterostructures such as GaN/AlGaN quantum wells grown on -plane sapphire. Strain effects are included using a general rotation method that diagonalizes strain and is appropriate for pseudomorphic wurtzite structures in any allowed orientation. It is shown that inversion asymmetry in the valence band leads to shifts in the band-edge energies in the []-grown quantum wells. The finite element method is used with the Lagrangian for the composite layered semiconductor structure in order to obtain the energy eigenvalues for multi-quantum well systems. Calculations for quantum wells and superlattices are presented. [Copyright &y& Elsevier] AB - Copyright of Superlattices & Microstructures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTORS KW - HETEROSTRUCTURES KW - LAGRANGE equations KW - CRYSTALS KW - Arbitrary growth direction KW - Layered semiconductor nanostructures KW - Wurtzite heterostructures N1 - Accession Number: 20768292; Ram-Mohan, L.R. 1 Girgis, A.M. 2 Albrecht, J.D. 3; Email Address: john.albrecht@wpafb.af.mil Litton, C.W. 3; Affiliation: 1: Departments of Physics, Electrical and Computer Engineering, Worcester Polytechnic Institute, Worcester, MA, United States 2: Consultant, Quantum Semiconductor Algorithms, Inc., Northborough, MA, United States 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, United States; Source Info: Jun2006, Vol. 39 Issue 6, p455; Subject Term: SEMICONDUCTORS; Subject Term: HETEROSTRUCTURES; Subject Term: LAGRANGE equations; Subject Term: CRYSTALS; Author-Supplied Keyword: Arbitrary growth direction; Author-Supplied Keyword: Layered semiconductor nanostructures; Author-Supplied Keyword: Wurtzite heterostructures; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 23p; Document Type: Article L3 - 10.1016/j.spmi.2005.11.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20768292&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Natarajan, Lalgudi V. AU - Brown, Dean P. AU - Wofford, Jeremy M. AU - Tondiglia, Vincent P. AU - Sutherland, Richard L. AU - Lloyd, Pamela F. AU - Bunning, Timothy J. T1 - Holographic polymer dispersed liquid crystal reflection gratings formed by visible light initiated thiol-ene photopolymerization JO - Polymer JF - Polymer Y1 - 2006/05/31/ VL - 47 IS - 12 M3 - Article SP - 4411 EP - 4420 SN - 00323861 AB - Abstract: Visible laser light of wavelengths 442, 488 and 532nm was used to write holographic reflection gratings with notches into the infra-red spectral region in polymer dispersed liquid crystals (H-PDLC). The gratings were formed by the spatially periodic phase separation of nematic liquid crystal during thiol-ene photopolymerization. An organic titanocene based complex, Rhodamine 6G (Rh6G) and Pyrromethene 597 (Pym) dyes in combination with benzoyl peroxide, were used as initiators. Using visible laser light and a single prism, electrically switchable reflection gratings with notches in the blue, green, yellow, red, and near infra-red (NIR) spectral regions were fabricated using angle tuning. The photophysics of the initiator dyes was studied by absorption and fluorescence spectroscopy. Morphology studies by TEM showed a periodic distribution of discrete nematic droplets of nearly spherical shape. The development of visible photoinitiator systems broadens the range of fabrication wavelengths of dynamic reflection filters using inexpensive visible lasers. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - LIQUID crystals KW - FLUORESCENCE spectroscopy KW - POLYMERIZATION KW - DIFFRACTION gratings KW - Holography KW - Liquid crystals KW - Visible photoinitiator N1 - Accession Number: 20963830; Natarajan, Lalgudi V. 1; Email Address: lalgudi.natarajan@wpafb.af.mil Brown, Dean P. 2 Wofford, Jeremy M. 2 Tondiglia, Vincent P. 1 Sutherland, Richard L. 1 Lloyd, Pamela F. 3 Bunning, Timothy J. 2; Affiliation: 1: Science Applications International Corporation, 4031 Col. Glenn Highway, Dayton, OH 45431, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA 3: UES Incorporated, Beavercreek, OH 45431, USA; Source Info: May2006, Vol. 47 Issue 12, p4411; Subject Term: POLYMERS; Subject Term: LIQUID crystals; Subject Term: FLUORESCENCE spectroscopy; Subject Term: POLYMERIZATION; Subject Term: DIFFRACTION gratings; Author-Supplied Keyword: Holography; Author-Supplied Keyword: Liquid crystals; Author-Supplied Keyword: Visible photoinitiator; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.polymer.2006.04.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20963830&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - RPRT AU - Dimiduk, Dennis M. AU - Woodward, Chris AU - LeSar, Richard AU - Uchic, Michael D. T1 - Scale-Free Intermittent Flow in Crystal Plasticity. JO - Science JF - Science Y1 - 2006/05/26/ VL - 312 IS - 5777 M3 - Report SP - 1188 EP - 1190 SN - 00368075 AB - Under stress, crystals irreversibly deform through complex dislocation processes that intermittently change the microscopic material shape through isolated slip events. These underlying processes can be revealed in the statistics of the discrete changes. Through ultraprecise nanoscale measurements on nickel microcrystals, we directly determined the size of discrete slip events. The sizes ranged over nearly three orders of magnitude and exhibited a shock-and-aftershock, earthquake-like behavior over time. Analysis of the events reveals power-law scaling between the number of events and their magnitude, or scale-free flow. We show that dislocated crystals are a model system for studying scale-free behavior as observed in many macroscopic systems. In analogy to plate tectonics, smooth macroscopic-scale crystalline glide arises from the spatial and time averages of disruptive earthquake-like events at the nanometer scale. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLATE tectonics KW - CRYSTALS KW - NICKEL KW - NANOSTRUCTURED materials KW - METALLOGRAPHY KW - CRYSTALLOGRAPHY KW - MICROSCOPY -- Technique KW - GEODYNAMICS KW - NANOSCIENCE N1 - Accession Number: 21178487; Dimiduk, Dennis M. 1; Email Address: dennis.dimiduk@wpafb.af.mil Woodward, Chris 2 LeSar, Richard 3 Uchic, Michael D. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright-Patterson AFB, OH 45433, USA. 2: Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA. 3: Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.; Source Info: 5/26/2006, Vol. 312 Issue 5777, p1188; Subject Term: PLATE tectonics; Subject Term: CRYSTALS; Subject Term: NICKEL; Subject Term: NANOSTRUCTURED materials; Subject Term: METALLOGRAPHY; Subject Term: CRYSTALLOGRAPHY; Subject Term: MICROSCOPY -- Technique; Subject Term: GEODYNAMICS; Subject Term: NANOSCIENCE; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 3p; Document Type: Report UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21178487&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gupta, Preeti AU - Markowicz, Przemyslaw P. AU - Baba, Koichi AU - O'Reilly, James AU - Samoc, Marek AU - Prasad, Paras N. AU - Grote, James G. T1 - DNA-Ormocer based biocomposite for fabrication of photonic structures. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/05/22/ VL - 88 IS - 21 M3 - Article SP - 213109 PB - American Institute of Physics SN - 00036951 AB - We report microfabrication of high quality photonic structures such as two-dimensional photonic crystals and beam splitters from a high DNA load, photosensitive Ormocer nanocomposite. This nanocomposite combines the high dye loading capacity of DNA with the photopatternability and hardness of the Ormocer. The fabrication is performed with the two-photon lithography method. Detailed studies of the deoxyribonucleic acid distribution in the fabricated structures are conducted with Raman microscopy. We also demonstrate that the deoxyribonucleic acid based nanocomposite films cast on glass substrates are of high enough quality to support amplified spontaneous emission from dyes intercalated in the deoxyribonucleic acid. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROFABRICATION KW - PHOTONICS KW - DNA KW - CRYSTALS KW - COMPOSITE materials N1 - Accession Number: 21845801; Gupta, Preeti 1 Markowicz, Przemyslaw P. 1; Email Address: ppm@nsm.buffalo.edu Baba, Koichi 1 O'Reilly, James 1 Samoc, Marek 1 Prasad, Paras N. 1 Grote, James G. 2; Affiliation: 1: The Institute for Lasers, Photonics and Biophotonics, Departments of Chemistry and Physics, University at Buffalo, State University of New York, Buffalo, New York 14260 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7707; Source Info: 5/22/2006, Vol. 88 Issue 21, p213109; Subject Term: MICROFABRICATION; Subject Term: PHOTONICS; Subject Term: DNA; Subject Term: CRYSTALS; Subject Term: COMPOSITE materials; Number of Pages: 3p; Illustrations: 3 Black and White Photographs, 1 Graph; Document Type: Article L3 - 10.1063/1.2204648 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21845801&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kar, Tapas AU - Akdim, Brahim AU - Duan, Xiaofeng AU - Pachter, Ruth T1 - Open-ended modified single-wall carbon nanotubes: A theoretical study of the effects of purification JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2006/05/20/ VL - 423 IS - 1-3 M3 - Article SP - 126 EP - 130 SN - 00092614 AB - Abstract: A density functional theory (DFT) study of purified single-wall carbon nanotube (SWCNT) molecular models has shown that open-ended carboxylated C(10,0) and C(5,5) are more acidic than benzoic acid, but moreover, that C(10,0)–COOH is slightly more acidic than C(5,5)–COOH, possibly enabling separation by chirality. In addition, an increase in the ionization potential may indicate a suppression of field emission for purified SWCNTs. Finally, we address the complexity of the large-scale DFT calculations by the application of the same level of theory but with a different basis set (SLDB) method, shown to be advantageous as compared to ONIOM. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOTUBES KW - FULLERENES KW - DENSITY functionals KW - MOLECULAR models N1 - Accession Number: 20732984; Kar, Tapas 1; Email Address: tapaskar@cc.usu.edu Akdim, Brahim 2 Duan, Xiaofeng 2 Pachter, Ruth 2; Email Address: Ruth.Pachter@wpafb.af.mil; Affiliation: 1: Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hills, Logan, UT 84322-0300, United States 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7702, United States; Source Info: May2006, Vol. 423 Issue 1-3, p126; Subject Term: NANOTUBES; Subject Term: FULLERENES; Subject Term: DENSITY functionals; Subject Term: MOLECULAR models; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.cplett.2006.02.089 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20732984&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baeslack III, W. A. AU - Jata, K. V. AU - Lienert, T. J. T1 - Structure, properties and fracture of friction stir welds in a high-temperature Al-8.5Fe-1.3V–1.7Si alloy (AA-8009). JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2006/05/15/ VL - 41 IS - 10 M3 - Article SP - 2939 EP - 2951 PB - Springer Science & Business Media B.V. SN - 00222461 AB - Friction stir welds produced in a rapidly-solidified, powder metallurgy Al-8.5Fe-1.3 V-1.7 Si (wt.%) alloy were characterized in order to investigate the effects of deformation during welding on the weld zone microstructure, hardness, tensile properties, and fracture behavior. A weld produced using a tool rotational speed of 1200 rpm and a traversing rate of 4.3 mm/s exhibited a repetitive pattern of dispersoid-depleted bands that were attributed to the intense deformation that occurred in the vicinity of the tool. The significant softening associated with these regions, and the presence of occasional, irregularly-shaped voids near the boundary between the base metal and the weld zone on the advancing side of the weld, promoted a weld tensile strength of 60–70% of the base metal. The application of a lower tool rotational speed of 428 rpm and a lower traversing rate of 1.9 mm/s promoted fewer bands and a more uniform dispersoid distribution throughout the weld zone, and an absence of defects along the weld zone/base metal interface. Tensile strength of these welds approached 90% of the base metal. Fracture of the transverse-weld oriented tensile specimens for both weld types consistently occurred near the boundary between the weld zone and the base metal on the advancing side of the weld zone, with tensile specimen ductilities appreciably lower than that of the base metal. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WELDING KW - POWDER metallurgy KW - HIGH temperatures KW - SILICON alloys KW - MATERIALS science N1 - Accession Number: 20925226; Baeslack III, W. A. 1; Email Address: baeslack.1@osu.edu Jata, K. V. 2 Lienert, T. J. 3; Affiliation: 1: College of Engineering The Ohio State University , Columbus 43210 USA 2: Materials and Manufacturing Directorate , Air Force Research Laboratory , Wright-Patterson AFB 45431 USA 3: MST Division , Los Alamos National Laboratory , Los Alamos 87545 USA; Source Info: May2006, Vol. 41 Issue 10, p2939; Subject Term: WELDING; Subject Term: POWDER metallurgy; Subject Term: HIGH temperatures; Subject Term: SILICON alloys; Subject Term: MATERIALS science; NAICS/Industry Codes: 332117 Powder Metallurgy Part Manufacturing; NAICS/Industry Codes: 238190 Other Foundation, Structure, and Building Exterior Contractors; Number of Pages: 13p; Illustrations: 13 Black and White Photographs, 1 Diagram, 1 Chart; Document Type: Article L3 - 10.1007/s10853-006-5089-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20925226&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Van Doren, Jane M. AU - Hogan, Kathleen B. AU - Miller, Thomas M. AU - Viggiano, A. A. T1 - Observation of dihalide elimination upon electron attachment to oxalyl chloride and oxalyl bromide, 300–550 K. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2006/05/14/ VL - 124 IS - 18 M3 - Article SP - 184313 PB - American Institute of Physics SN - 00219606 AB - Rate coefficients have been measured for electron attachment to oxalyl chloride [ClC(O)C(O)Cl] and oxalyl bromide [BrC(O)C(O)Br] in He gas at 133 Pa pressure over the temperature range of 300–550 K. With oxalyl chloride, the major ion product of attachment is Cl2- at all temperatures (66% at 300 K); its importance increases slightly as temperature increases. Two other product ions formed are Cl- (18% at 300 K) and the phosgene anion CCl2O- (16% at 300 K) and appear to arise from a common mechanism. With oxalyl bromide, the Br2- channel represents almost half of the ion product of attachment, independent of temperature. Br- accounts for the remainder. For oxalyl chloride, the attachment rate coefficient is small [(1.8±0.5)×10-8 cm3 s-1 at 300 K], and increases with temperature. The attachment rate coefficient for oxalyl bromide [(1.3±0.4)×10-7 cm3 s-1 at 300 K] is nearly collisional and increases only slightly with temperature. Stable parent anions C2Cl2O2- and C2Br2O2- and adduct anions Cl-(C2Cl2O2) and Br-(C2Br3O2) were observed but are not primary attachment products. G2 and G3 theories were applied to determine geometries of products and energetics of the electron attachment and ion-molecule reactions studied. Electron attachment to both oxalyl halide molecules leads to a shorter C–C bond and longer C–Cl bond in the anions formed. Trans and gauche conformers of the neutral and anionic oxalyl halide species have similar energies and are more stable than the cis conformer, which lies 100–200 meV higher in energy. For C2Cl2O2, C2Cl2O2-, and C2Br2O2-, the trans conformer is the most stable conformation. The calculations are ambiguous as to the oxalyl bromide geometry (trans or gauche), the result depending on the theoretical method and basis set. The cis conformers for C2Cl2O2 and C2Br2O2 are transition states. In contrast, the cis conformers of the anionic oxalyl halide molecules are stable, lying 131 meV above trans-C2Cl2O2- and 179 meV above trans-C2Br2O2-. Chien et al. [J. Phys. Chem. A 103, 7918 (1999)] and Kim et al. [J. Chem. Phys. 122, 234313 (2005)] found that the potential energy surface for rotation about the C–C bond in C2Cl2O2 is “extremely flat.” Our computational data indicate that the analogous torsional surfaces for C2Br2O2, C2Cl2O2-, and C2Br2O2- are similarly flat. The electron affinity of oxalyl chloride, oxalyl bromide, and phosgene were calculated to be 1.91 eV (G3), and 2.00 eV (G2), and 1.17 eV (G3), respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHLORIDES KW - BROMIDES KW - HALIDES KW - PHOSGENE KW - CARBONYL halides KW - ELECTRONS N1 - Accession Number: 20924196; Van Doren, Jane M. 1; Email Address: jvandoren@holycross.edu Hogan, Kathleen B. 1 Miller, Thomas M. 2; Email Address: thomas.miller@hanscom.af.mil Viggiano, A. A. 2; Affiliation: 1: Department of Chemistry, College of the Holy Cross, Worcester, Massachusetts 01610-2395 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Bedford, Massachusetts 01731-3010; Source Info: 5/14/2006, Vol. 124 Issue 18, p184313; Subject Term: CHLORIDES; Subject Term: BROMIDES; Subject Term: HALIDES; Subject Term: PHOSGENE; Subject Term: CARBONYL halides; Subject Term: ELECTRONS; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 8p; Illustrations: 1 Diagram, 3 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.2196409 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20924196&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - J. J. Hu AU - Jeffrey S. Zabinski AU - Jeffrey H. Sanders AU - John E. Bultman AU - Andrey A. Voevodin T1 - Pulsed Laser Syntheses of Layer-Structured WS2Nanomaterials in Water. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2006/05/11/ VL - 110 IS - 18 M3 - Article SP - 8914 EP - 8916 SN - 15206106 AB - We used water as an environmental friendly medium for the synthesis of hexagonal WS2nanoparticles by the pulsed laser method. The materials collected on substrates were oriented with the 2H-WS2basal planes parallel to the surface. The use of water, UV lasers, and large WS2targets prevented the nanoparticles from restructuring into inorganic fullerenes, which were observed in research using hydrocarbon solvents, longer wavelength lasers, and dispersed powder targets. Fairly good dispersion of nanoparticles suggests that large surface areas are available for chemical reactivity. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS -- Industrial applications KW - NANOPARTICLES KW - WATER KW - FULLERENES N1 - Accession Number: 21811867; J. J. Hu 1 Jeffrey S. Zabinski 1 Jeffrey H. Sanders 1 John E. Bultman 1 Andrey A. Voevodin 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory (AFRL/MLBT), Wright-Patterson AirForce Base, Dayton, Ohio 45433-7750; Source Info: May2006, Vol. 110 Issue 18, p8914; Subject Term: LASERS -- Industrial applications; Subject Term: NANOPARTICLES; Subject Term: WATER; Subject Term: FULLERENES; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21811867&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alexander O. Govorov AU - Garnett W. Bryant AU - Wei Zhang AU - Timur Skeini AU - Jaebeom Lee AU - Nicholas A. Kotov AU - Joseph M. Slocik AU - Rajesh R. Naik T1 - Exciton−Plasmon Interaction and Hybrid Excitons in Semiconductor−Metal Nanoparticle Assemblies. JO - Nano Letters JF - Nano Letters Y1 - 2006/05/10/ VL - 6 IS - 5 M3 - Article SP - 984 EP - 994 SN - 15306984 AB - We describe the physical properties of excitons in hybrid complexes composed of semiconductor and metal nanoparticles. The interaction between individual nanoparticles is revealed as an enhancement or suppression of emission. Enhanced emission comes from electric field amplified by the plasmon resonance, whereas emission suppression is a result of energy transfer from semiconductor to metal nanoparticles. The emission intensity and energy transfer rate depend strongly on the geometrical parameters of the superstructure and the physical and material properties of the nanoparticles. In particular, the emission enhancement effect appears for nanoparticles with relatively small quantum yield, and silver nanoparticles have stronger enhancement compared to gold ones. Using realistic models, we review and analyze available experimental data on energy transfer between nanoparticles. In hybrid superstructures conjugated with polymer linkers, optical emission is sensitive to environmental parameters such as, for example, temperature. This sensitivity comes from expansion or contraction of a linker. With increasing temperature, emission of polymer-conjugated complexes can decrease or increase depending on the organization of a superstructure. The structures described here have potential as sensors and actuators. [ABSTRACT FROM AUTHOR] AB - Copyright of Nano Letters is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXCITON theory KW - NANOPARTICLES KW - SEMICONDUCTORS KW - PLASMONS (Physics) N1 - Accession Number: 21630162; Alexander O. Govorov 1 Garnett W. Bryant 1 Wei Zhang 1 Timur Skeini 1 Jaebeom Lee 1 Nicholas A. Kotov 1 Joseph M. Slocik 1 Rajesh R. Naik 1; Affiliation: 1: Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, Quantum Processes and Metrology Group, National Institute of Standards and Technology, Atomic Physics Division, 100 Bureau Drive, Stop 8423, Gaithersburg, Maryland 20899-8423, Department of Chemical Engineering, Biomedical Engineering, and Material Sciences and Engineering, University of Michigan, Ann Arbor, Michigan 48109, andMaterials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Dayton, Ohio 45433-7702; Source Info: May2006, Vol. 6 Issue 5, p984; Subject Term: EXCITON theory; Subject Term: NANOPARTICLES; Subject Term: SEMICONDUCTORS; Subject Term: PLASMONS (Physics); NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21630162&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sheta, Essam F. AU - Moses, Robert W. AU - Huttsell, Lawrence J. T1 - Active smart material control system for buffet alleviation JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2006/05/09/ VL - 292 IS - 3-5 M3 - Article SP - 854 EP - 868 SN - 0022460X AB - Abstract: Vertical tail buffeting is a serious multidisciplinary problem that limits the performance and maneuverability of twin-tail fighter aircraft. The buffet problem occurs at high angles of attack when the vortical flow breaks down ahead of the vertical tails resulting in unsteady and unbalanced loads on the tails leading to their premature fatigue failure. An active smart material control system, using distributed piezoelectric (PZT) actuators, is developed for buffet alleviation and is presented. The surfaces of the vertical tail are equipped with PZT actuators to control the buffet responses in the first bending and torsion modes. The electrodynamics of the PZT actuators are modeled using a finite-element model. A single-input/single-output controller is designed to drive the active PZT actuators. High-fidelity analysis modules for the fluid dynamics, structural dynamics, electrodynamics of the PZT actuators, control law, fluid–structure interfacing, and grid motion are integrated into a multidisciplinary computing environment that controls the temporal synchronization of the analysis modules. The results of this study indicate that the actively controlled PZT actuators are an effective tool for buffet alleviation over wide range of angels of attack. Peak values of power spectral density of tail-tip acceleration are reduced by as much as 22% in the first bending mode and by as much as 82% in the first torsion mode. The root mean square values of tail-tip acceleration are reduced by as much as 12%. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEFORMATIONS (Mechanics) KW - ELASTIC solids KW - TORSION KW - VIBRATION (Mechanics) N1 - Accession Number: 19965429; Sheta, Essam F. 1; Email Address: efs@cfdrc.com Moses, Robert W. 2 Huttsell, Lawrence J. 3; Affiliation: 1: CFD Research Corporation, 215 Wynn Drive, Huntsville, AL 35805, USA 2: NASA Langley Research Center, Hampton, VA, USA 3: Air Force Research Laboratory, WPAFB, Dayton, OH, USA; Source Info: May2006, Vol. 292 Issue 3-5, p854; Subject Term: DEFORMATIONS (Mechanics); Subject Term: ELASTIC solids; Subject Term: TORSION; Subject Term: VIBRATION (Mechanics); Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.jsv.2005.09.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19965429&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rooney, Andrew A. AU - Mattie, David R. AU - Dodd, Darol E. T1 - Introduction—Toxicology and Risk Assessment Conference 2005. JO - Journal of Toxicology & Environmental Health: Part A JF - Journal of Toxicology & Environmental Health: Part A Y1 - 2006/05/08/ VL - 69 IS - 9/10 M3 - Article SP - 771 EP - 775 SN - 15287394 AB - The article discusses various reports published within the issue, including one by Michael Waters on predictive toxicology and another by John Richburg on the role of death receptor signaling in testicular germ-cell apoptosis triggered by mono-(2-ethylhexyl)phthalate-induced Sertoli-cell injury. KW - PREFACES & forewords KW - TOXICOLOGY N1 - Accession Number: 20617866; Rooney, Andrew A. 1; Email Address: rooney.andrew@epa.gov Mattie, David R. 2; Email Address: david.mattie@wpafb.af.mil Dodd, Darol E. 3; Email Address: darol.dodd@wpafb.af.mil; Affiliation: 1: Immunotoxicology Risk Assessment Session Co-Chair National Center for Environmental Assessment Office of Research and Development U.S. Environmental Protection Agency Research Triangle Park, North Carolina, USA 2: Conference Co-chair Human Effectiveness Directorate Biosciences and Protection Division Air Force Research Laboratory Wright-Patterson AFB, Ohio, USA 3: Alion Science and Technology Wright-Patterson AFB, Ohio, USA; Source Info: May2006, Vol. 69 Issue 9/10, p771; Subject Term: PREFACES & forewords; Subject Term: TOXICOLOGY; Number of Pages: 5p; Document Type: Article L3 - 10.1080/15287390600591330 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20617866&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bopp, Joseph C. AU - Diken, Eric G. AU - Headrick, Jeffrey M. AU - Roscioli, Joseph R. AU - Johnson, Mark A. AU - Midey, Anthony J. AU - Viggiano, A. A. T1 - Determination of the CO3- bond strength via the resonant two-photon photodissociation threshold: Electronic and vibrational spectroscopy of CO3-·Arn. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2006/05/07/ VL - 124 IS - 17 M3 - Article SP - 174302 PB - American Institute of Physics SN - 00219606 AB - We use a two-laser pump-probe technique coupled with messenger atom tagging to determine the bond energy of O- to CO2 in the CO3- ion, a prevalent species in the upper atmosphere. In this technique, the argon-tagged ion is first electronically excited using a visible laser, then irradiated with a tunable near-infrared beam across the CO2...O- dissociation threshold while O- products are monitored. This method yields a bond energy of 2.79±0.05 eV, which is about 0.5 eV higher than previously reported. Combining this with the well-known heats of formation of O- and CO2, 105.6 and -393.1 kJ/mol, respectively [Thermodynamic Properties of Individual Substances, edited by L. V. Gurvich, I. V. Veyts, and C. B. Alcock (Hemisphere, New York, 1989), Vol. 1 and CODATA Thermodynamic Tables, edited by O. Garvin, V. B. Parker, and J. H. J. White (Hemisphere, New York, 1987)], yields the CO3- heat of formation: ΔH00=-556.7±4.8 kJ/mol. The one-photon (i.e., linear) infrared and electronic spectra of CO3- are also presented and compared to those obtained previously. The one-photon electronic spectrum is nearly identical to two-photon spectra, implying that argon does not significantly perturb the ion or its symmetry. The infrared spectrum is drastically different than that obtained in an argon matrix, however, indicating that the ion is likely distorted in the matrix environment. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - INFRARED spectra KW - INFRARED radiation KW - THERMODYNAMICS KW - PHOTONS KW - IONS N1 - Accession Number: 20800339; Bopp, Joseph C. 1 Diken, Eric G. 1 Headrick, Jeffrey M. 1 Roscioli, Joseph R. 1 Johnson, Mark A. 1; Email Address: mark.johnson@yale.edu Midey, Anthony J. 2,3 Viggiano, A. A. 2; Affiliation: 1: Sterling Chemistry Laboratory, Yale University, New Haven, Connecticut 06520-8107 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts 01731-3010 3: Institute for Scientific Research, Boston College, Chestnut Hill, Massachusetts; Source Info: 5/7/2006, Vol. 124 Issue 17, p174302; Subject Term: LASERS; Subject Term: INFRARED spectra; Subject Term: INFRARED radiation; Subject Term: THERMODYNAMICS; Subject Term: PHOTONS; Subject Term: IONS; Number of Pages: 6p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.2183303 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20800339&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Koerner, Hilmar AU - Misra, Devesh AU - Tan, Ashley AU - Drummy, Lawrence AU - Mirau, Peter AU - Vaia, Richard T1 - Montmorillonite-thermoset nanocomposites via cryo-compounding JO - Polymer JF - Polymer Y1 - 2006/05/03/ VL - 47 IS - 10 M3 - Article SP - 3426 EP - 3435 SN - 00323861 AB - Abstract: For organically modified montmorillonite (OMM)–epoxy nanocomposites, maximal montmorillonite dispersion is found to depend synergistically on the mechanical processing history of the resin mixture and the chemistry at the OMM surface. Specifically, Cloisite 30A (quaternary ammonium OMM) and I30.E (primary ammonium OMM), each containing surfactants with different catalytic effects on the curing chemistry of Epon 862, are compared. Irrespective of the OMM, conventional solvent-free processing methodologies, including sonication, result in an inhomogeneous distribution of OMM on the micron scale. Even though the primary ammonium alkyls within I30.E enhance intragallery reactivity, this only results in extensive swelling of tactoids (interlayer distance ∼10–20nm), and thus retention of layer–layer correlations, leading to ‘hybrid’ micron scale reinforcing particles, not nanoscale dispersion of individual layers. In contrast, sub-ambient temperature (cryo) compounding had substantial impact on the ability to reduce tactoid and agglomerate size and increase homogeneity of dispersion for Cloisite 30A. The reactivity near Cloisite 30A is similar to that in the bulk and thus localized gelation around the layer-stacks does not retard particulate refinement. In all cases, alteration of the global epoxy network structure was ruled out by FTIR and NMR measurements. For nanocomposites with similar OMM content, however, the final thermal–mechanical properties does not coherently relate to one characteristic of the morphology. The coefficient of thermal expansion (T>T g) and hardness (T=10 GHz) applications. However, the devices are known to be unstable in their performance due to parasitic dielectric charging. Although several authors have previously reported the switch failure along with shifts in pull-down and release voltages due to charging, there is some disagreement and lack of understanding among the various reports. This study uses a switch simulator capable of measuring microscale electrostatic and adhesive forces to investigate charging and its effect on reliability and fundamental forces acting within MEMS capacitive switches. An important advantage of the switch simulator is that it can be actuated with or without a bias voltage. Electrostatic force and dielectric charging increased as surfaces were worn smooth by cycling. This is because the surface smoothening decreases separation and increases the electric field strength inside the dielectric. A simple analytical model was developed using electromagnetic theory for the electrostatic force in terms of bias voltage and the areal density of parasitic charge. Using the model and experimental data, it was determined that “charging” (net charge is zero) with the same polarity as the bias voltage resulted in reduced electrostatic force (under bias voltage) when a worn-in switch was actuated repeatedly at constant bias voltage >=40 V. Small electrostatic force under bias voltage can explain failure in the “up” position (failure to actuate and self-release). Reversing the polarity of the bias voltage between actuations prevented charge buildup and doubled the electrostatic force, which can help explain the effectiveness of bipolar actuation. The charging time constant for parasitic dielectric charge is about 30 s under typical MEMS contact conditions. In the specific case of parasitic charge being present, high electrostatic and adhesion forces were measured at zero volts bias. This can explain failure in the down position under zero bias voltage due to self-actuation or adhesion. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRICS KW - MICROELECTROMECHANICAL systems KW - RADIO frequency KW - FORCE & energy KW - CAPACITANCE meters N1 - Accession Number: 20924568; Patton, Steven T. 1; Email Address: steve.patton@wpafb.af.mil Zabinski, Jeffrey S. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469-0168 2: Materials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7750; Source Info: 5/1/2006, Vol. 99 Issue 9, p094910; Subject Term: DIELECTRICS; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: RADIO frequency; Subject Term: FORCE & energy; Subject Term: CAPACITANCE meters; Number of Pages: 11p; Illustrations: 3 Diagrams, 7 Graphs; Document Type: Article L3 - 10.1063/1.2194125 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20924568&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sharma, Ramesh D. AU - Dao, Phan D. T1 - A potential remote-sensing technique for thermospheric temperature with ground-based resonant atomic oxygen Raman lidar JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2006/05// VL - 68 IS - 8 M3 - Article SP - 921 EP - 929 SN - 13646826 AB - Abstract: We propose a remote-sensing technique to measure temperature in the lower thermosphere with a resonant Raman lidar. A ground-based pulsed laser operating at 630.0304 (636.3776)nm excites 3P2 (3P1) multiplet level of the ground electronic state of atomic oxygen in the atmosphere to the electronically excited 1D2 state and the back-scattered photons at 636.3776 (630.0304)nm, while the atom transitions to 3P1 (3P2), are detected. Using the backscattering Raman cross sections calculated here we show: (1) For the range of altitudes in the lower thermosphere where the fine-structure multiplets of atomic oxygen are in thermodynamic equilibrium with the local translational temperature (LTE) and the electronically excited intermediate state 1D2 remains relaxed primarily by collisions with N2 and O2, the ratio of the backscattered signal can be used to obtain temperature. (2) Higher up, for the range of altitudes where the fine-structure multiplets of atomic oxygen are in LTE and the electronically excited intermediate state 1D2 is relaxed primarily by spontaneous emission of a photon, the Stokes and anti-Stokes backscattered signal can be used to obtain the atomic oxygen density and local temperature. (3) Still higher up, for the range of altitudes where the fine-structure multiplets of atomic oxygen are not in LTE and the electronically excited intermediate state 1D2 is relaxed primarily by spontaneous emission of a photon, the Stokes and anti-Stokes backscattered signal can be used to obtain the density of the 3P2 and 3P1 multiplet levels of the ground electronic state of atomic oxygen. For a ground-based instrument a simulation with 3km range gate is used to show that the relative error of temperature measurements from 100 to 250km could be less than 30%. It is pointed out that this technique has the potential of providing unique data that addresses the modeling of satellite drag and the effects of space weather on the upper atmosphere. In addition, this technique may also permit the detection of the thickness of the temperature inversion layers as well as their temperature and density perturbations. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TEMPERATURE measurements KW - SCATTERING (Physics) KW - RAMAN effect KW - AEROSPACE telemetry KW - Atomic oxygen density KW - Middle and upper atmosphere KW - Remote sensing KW - Resonant Raman scattering KW - Temperature N1 - Accession Number: 20733851; Sharma, Ramesh D.; Email Address: ramesh.sharma@hanscom.af.mil Dao, Phan D. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate/VSBY, Hanscom AFB, MA 01731, USA; Source Info: May2006, Vol. 68 Issue 8, p921; Subject Term: TEMPERATURE measurements; Subject Term: SCATTERING (Physics); Subject Term: RAMAN effect; Subject Term: AEROSPACE telemetry; Author-Supplied Keyword: Atomic oxygen density; Author-Supplied Keyword: Middle and upper atmosphere; Author-Supplied Keyword: Remote sensing; Author-Supplied Keyword: Resonant Raman scattering; Author-Supplied Keyword: Temperature; NAICS/Industry Codes: 517919 All Other Telecommunications; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jastp.2005.10.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20733851&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Santarelli, Scott AU - Yu, Tian-Li AU - Goldberg, David E. AU - Altshuler, Edward AU - O’Donnell, Teresa AU - Southall, Hugh AU - Mailloux, Robert T1 - Military antenna design using simple and competent genetic algorithms JO - Mathematical & Computer Modelling JF - Mathematical & Computer Modelling Y1 - 2006/05// VL - 43 IS - 9/10 M3 - Article SP - 990 EP - 1022 SN - 08957177 AB - Abstract: Over the past decade, the Air Force Research Laboratory (AFRL) Antenna Technology Branch at Hanscom AFB has employed the simple genetic algorithm (SGA) as an optimization tool for a wide variety of antenna applications. Over roughly the same period, researchers at the Illinois Genetic Algorithm Laboratory (IlliGAL) at the University of Illinois at Urbana Champaign have developed GA design theory and advanced GA techniques called competent genetic algorithms—GAs that solve hard problems quickly, reliably, and accurately. Recently, under the guidance and direction of the Air Force Office of Scientific Research (AFOSR), the two laboratories have formed a collaboration, the common goal of which is to apply simple, competent, and hybrid GA techniques to challenging antenna problems. This paper is composed of two parts. The first part of this paper summarizes previous research conducted by AFRL at Hanscom for which SGAs were implemented to obtain acceptable solutions to several antenna problems. This research covers diverse areas of interest, including array pattern synthesis, antenna test-bed design, gain enhancement, electrically small single bent wire elements, and wideband antenna elements. The second part of this paper starts by briefly reviewing the design theory and design principles necessary for the invention and implementation of fast, scalable genetic algorithms. A particular procedure, the hierarchical Bayesian optimization algorithm (hBOA) is then briefly outlined, and the remainder of the paper describes collaborative efforts of AFRL and IlliGAL to solve more difficult antenna problems. In particular, recent results of using hBOA to optimize a novel, wideband overlapped subarray system to achieve −35 dB sidelobes over a 20% bandwidth. The problem was sufficiently difficult that acceptable solutions were not obtained using SGAs. The case study demonstrates the utility of using more advanced GA techniques to obtain acceptable solution quality as problem difficulty increases. [Copyright &y& Elsevier] AB - Copyright of Mathematical & Computer Modelling is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GENETIC algorithms KW - ANTENNAS (Electronics) -- Design & construction KW - MILITARY art & science KW - BAYESIAN analysis KW - Competent genetic algorithm KW - Evolutionary computation KW - Genetic algorithm (GA) KW - Hierarchical Bayesian optimization algorithm (hBOA) KW - Optimization technique N1 - Accession Number: 20552168; Santarelli, Scott 1; Email Address: Scott.Santarelli@hanscom.af.mil Yu, Tian-Li 2; Email Address: tianliyu@illigal.ge.uiuc.edu Goldberg, David E. 2; Email Address: deg@illigal.ge.uiuc.edu Altshuler, Edward 1; Email Address: Edward.Altshuler@hanscom.af.mil O’Donnell, Teresa 1; Email Address: Teresa.Odonnell.ctr@hanscom.af.mil Southall, Hugh 3; Email Address: hsouthall@ll.mit.edu Mailloux, Robert 1; Email Address: Robert.Mailloux.ctr@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Antenna Technology Branch (AFRL/SNHA), 80 Scott Drive, Hanscom AFB, MA 01731, USA 2: Illinois Genetic Algorithms Laboratory (IlliGAL), Department of General Engineering, University of Illinois at Urbana-Champaign, 104 S Mathews, Urbana, IL 61801, USA 3: Air Force Office, MIT Lincoln Laboratory, Arinc, Incorporation, 70 Westview Street, Lexington, MA 02173, USA; Source Info: May2006, Vol. 43 Issue 9/10, p990; Subject Term: GENETIC algorithms; Subject Term: ANTENNAS (Electronics) -- Design & construction; Subject Term: MILITARY art & science; Subject Term: BAYESIAN analysis; Author-Supplied Keyword: Competent genetic algorithm; Author-Supplied Keyword: Evolutionary computation; Author-Supplied Keyword: Genetic algorithm (GA); Author-Supplied Keyword: Hierarchical Bayesian optimization algorithm (hBOA); Author-Supplied Keyword: Optimization technique; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 33p; Document Type: Article L3 - 10.1016/j.mcm.2005.05.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20552168&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ormsby, Charles D. AU - Raquet, John F. AU - Maybeck, Peter S. T1 - A new generalized residual multiple model adaptive estimator of parameters and states JO - Mathematical & Computer Modelling JF - Mathematical & Computer Modelling Y1 - 2006/05// VL - 43 IS - 9/10 M3 - Article SP - 1092 EP - 1113 SN - 08957177 AB - Abstract: This article develops a modification to the standard Multiple Model Adaptive Estimator (MMAE) which allows the use of a new “generalized residual” in the hypothesis conditional probability calculation. The generalized residual is a linear combination of the traditional Kalman filter residual and the “post-fit” Kalman filter residual which is calculated after measurement incorporation. This new modified MMAE is termed a Generalized Residual Multiple Model Adaptive Estimator (GRMMAE). A derivation is provided for the hypothesis conditional probability formula which the GRMMAE uses to calculate probabilities that each elemental filter contains the correct parameter value. Through appropriate choice of a single scalar GRMMAE design parameter, the GRMMAE can be designed to be equivalent to a traditional MMAE, a post-fit residual modified MMAE, or any linear combination of the two. The original GRMMAE design goal was to choose the GRMMAE design parameter which caused the fastest GRMMAE convergence to the correct hypothesis. However, this article demonstrates that the GRMMAE design parameter can lead to -dominance, a negative performance effect in the GRMMAE. That fact is a key result of this research as other researchers have previously suggested that the use of post-fit residuals may be advantageous in certain MMAE applications. This article demonstrates the -dominance effect and recommends that post-fit residuals not be used in an MMAE. [Copyright &y& Elsevier] AB - Copyright of Mathematical & Computer Modelling is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ESTIMATION theory KW - KALMAN filtering KW - PROBABILITY measures KW - PROBABILITY theory KW - Adaptive filters KW - Estimation KW - Kalman filtering KW - Multiple Model Adaptive Estimation N1 - Accession Number: 20552173; Ormsby, Charles D. 1; Email Address: charles.ormsby@kirtland.af.mil Raquet, John F. 2; Email Address: john.raquet@afit.edu Maybeck, Peter S. 2; Email Address: peter.maybeck@afit.edu; Affiliation: 1: Air Force Research Laboratory, High Power Microwave Division, 3550 Aberdeen Ave. SE, Kirtland Air Force Base, NM 87117, United States 2: Air Force Institute of Technology, Department of Electrical and Computer Engineering, 2950 Hobson Way, Wright Patterson Air Force Base, OH 45433, United States; Source Info: May2006, Vol. 43 Issue 9/10, p1092; Subject Term: ESTIMATION theory; Subject Term: KALMAN filtering; Subject Term: PROBABILITY measures; Subject Term: PROBABILITY theory; Author-Supplied Keyword: Adaptive filters; Author-Supplied Keyword: Estimation; Author-Supplied Keyword: Kalman filtering; Author-Supplied Keyword: Multiple Model Adaptive Estimation; Number of Pages: 22p; Document Type: Article L3 - 10.1016/j.mcm.2005.12.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20552173&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H.J. AU - Szmulowicz, F. AU - Brown, G.J. AU - Ullrich, B. AU - R Munshi, S. AU - Grazulis, L. AU - Mahalingam, K. AU - Fenstermaker, S.T. T1 - Pushing the envelope to the maximum: Short-period InAs/GaSb type-II superlattices for mid-infrared detectors JO - Physica E JF - Physica E Y1 - 2006/05// VL - 32 IS - 1/2 M3 - Article SP - 289 EP - 292 SN - 13869477 AB - Abstract: Using a newly developed envelope function approximation model that includes interface effects, several InAs/GaSb type-II superlattices (SL) for the 4μm (around 310meV) detection threshold were designed. The model predicts that a given threshold can be obtained with progressively thinner SL periods and the thinner designs can have higher mobility and longer Auger lifetime over the thicker designs. The proposed SL structures were grown by molecular-beam epitaxy. The band gaps of SLs determined by low-temperature photoluminescence (PL) remained constant PL peak energy around 340–320meV with distinctively different designs in the period range from 50.2 to 21.2Å. Correlation between SL material quality and the full-width at half-maximum (FWHM) of the luminescence peak were made. In situ annealing after SL growth improved surface morphologies and the FWHM of the emission peak for the annealed SL samples were slightly narrower than those of non-annealed SLs. [Copyright &y& Elsevier] AB - Copyright of Physica E is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - INFRARED detectors KW - INFRARED equipment KW - NUCLEAR research KW - A3. Molecular beam epitaxy KW - A3. Superlattices KW - B1. Antimonides KW - B3. Infrared detectors N1 - Accession Number: 20750769; Haugan, H.J. 1; Email Address: heather.haugan@wpafb.af.mil Szmulowicz, F. 1 Brown, G.J. 1 Ullrich, B. 2 R Munshi, S. 1 Grazulis, L. 1 Mahalingam, K. 1 Fenstermaker, S.T. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7707, USA 2: Centers for Materials and Photochemical Sciences, Department of Physics and Astronomy, Bowling Green State University, Bowling Green, OH 43403-0024, USA; Source Info: May2006, Vol. 32 Issue 1/2, p289; Subject Term: SUPERLATTICES; Subject Term: INFRARED detectors; Subject Term: INFRARED equipment; Subject Term: NUCLEAR research; Author-Supplied Keyword: A3. Molecular beam epitaxy; Author-Supplied Keyword: A3. Superlattices; Author-Supplied Keyword: B1. Antimonides; Author-Supplied Keyword: B3. Infrared detectors; NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.physe.2005.12.072 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20750769&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kramb, R.C. AU - Antony, M.M. AU - Semiatin, S.L. T1 - Homogenization of a nickel-base superalloy ingot material JO - Scripta Materialia JF - Scripta Materialia Y1 - 2006/05// VL - 54 IS - 9 M3 - Article SP - 1645 EP - 1649 SN - 13596462 AB - Abstract: The kinetics of homogenization of cast-ingot material of a typical nickel-base superalloy, Waspaloy, were determined and compared to previous measurements for single crystals. The observed kinetics for the ingot material were approximately twice as fast as those for the single crystal, an effect attributable to concomitant grain growth and hence enhanced (pipe) diffusion along grain boundaries in the polycrystalline condition. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL KW - DISLOCATIONS in crystals KW - CRYSTAL grain boundaries KW - SEMICONDUCTOR doping KW - Dendritic solidification KW - Diffusion KW - Grain growth KW - Homogenization N1 - Accession Number: 19849186; Kramb, R.C. 1 Antony, M.M. 2 Semiatin, S.L. 1; Email Address: Lee.Semiatin@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright-Patterson Air Force Base, OH 45433, USA 2: ATI Allvac, Monroe, NC 28111, USA; Source Info: May2006, Vol. 54 Issue 9, p1645; Subject Term: NICKEL; Subject Term: DISLOCATIONS in crystals; Subject Term: CRYSTAL grain boundaries; Subject Term: SEMICONDUCTOR doping; Author-Supplied Keyword: Dendritic solidification; Author-Supplied Keyword: Diffusion; Author-Supplied Keyword: Grain growth; Author-Supplied Keyword: Homogenization; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.scriptamat.2006.01.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19849186&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maruyama, Benji AU - Spowart, Jonathan E. AU - Hooper, Daylond J. AU - Mullens, Herbert M. AU - Druma, Adriana M. AU - Druma, Calin AU - Alam, M. Khairul T1 - A new technique for obtaining three-dimensional structures in pitch-based carbon foams JO - Scripta Materialia JF - Scripta Materialia Y1 - 2006/05// VL - 54 IS - 9 M3 - Article SP - 1709 EP - 1713 SN - 13596462 AB - Abstract: The three-dimensional (3D) structure of carbon foams is difficult to infer from two-dimensional characterizations. In particular, regular models cannot capture the interaction between the pores in real materials with morphological dispersity. In this paper, the actual 3D structure of a pitch-based carbon foam is captured and used to build solid models for finite element analyses of thermal and mechanical properties. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON KW - FOAM KW - FINITE element method KW - NUMERICAL analysis KW - Carbon and graphite KW - Carbon foams KW - Foams KW - Serial sectioning KW - Thermal and elastic finite element analyses N1 - Accession Number: 19849197; Maruyama, Benji 1; Email Address: Benji.Maruyama@wpafb.af.mil Spowart, Jonathan E. 1 Hooper, Daylond J. 1 Mullens, Herbert M. 2 Druma, Adriana M. 3 Druma, Calin 3 Alam, M. Khairul 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/ML, Wright-Patterson Air Force Base, OH 45433, United States 2: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, United States 3: Center for Advanced Materials Processing, Ohio University, Athens, OH 45701, United States; Source Info: May2006, Vol. 54 Issue 9, p1709; Subject Term: CARBON; Subject Term: FOAM; Subject Term: FINITE element method; Subject Term: NUMERICAL analysis; Author-Supplied Keyword: Carbon and graphite; Author-Supplied Keyword: Carbon foams; Author-Supplied Keyword: Foams; Author-Supplied Keyword: Serial sectioning; Author-Supplied Keyword: Thermal and elastic finite element analyses; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.scriptamat.2005.12.060 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19849197&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reed, J. AU - Bailey, P. B. AU - Dadd, M. W. AU - Davis, T. T1 - Motor and Thermodynamic Losses in Linear Cryocooler Compressors. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/04/27/ VL - 823 IS - 1 M3 - Article SP - 361 EP - 368 PB - American Institute of Physics SN - 0094243X AB - Stirling cycle and Pulse Tube cryocoolers can be described by ideal thermodynamic cycles with discrete losses, however experiments show a systematic underestimate of power consumed. Existing correlations have been unable to explain the magnitude of this additional ‘compression loss’, but it can account for up to 50% of the power delivered to the gas. It appears that even a modest decrease could significantly improve the efficiency of future machines. One problem inherent in studying this effect is the complex geometry of cryocoolers. Experiments have therefore been performed on an existing ‘Oxford type’ moving coil compressor with the simplest compression space geometry, a flat cylinder head. Measurements were made of the intrinsic motor losses (including windage), and the power delivered to the gas. The results show that for this machine the motor losses are greater than previously thought, accounting for up to 30% of the compression loss in the original cryocooler configuration. Measurements of the heat transfer losses are also presented. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPRESSORS KW - THERMODYNAMICS KW - HEAT transfer KW - GEOMETRY KW - MOTORS KW - compressors KW - Cryocooler KW - heat transfer KW - linear motors KW - Stirling cycle N1 - Accession Number: 20789034; Reed, J. 1,2 Bailey, P. B. 1 Dadd, M. W. 1 Davis, T. 3; Affiliation: 1: University of Oxford, Department of Engineering Science, Parks Road, Oxford, OX1 3PJ, United Kingdom 2: EADS Astrium, Gunnels Wood Road, Stevenage, SG1 2AS, United Kingdom 3: Space Vehicle Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117, United States of America; Source Info: 2006, Vol. 823 Issue 1, p361; Subject Term: COMPRESSORS; Subject Term: THERMODYNAMICS; Subject Term: HEAT transfer; Subject Term: GEOMETRY; Subject Term: MOTORS; Author-Supplied Keyword: compressors; Author-Supplied Keyword: Cryocooler; Author-Supplied Keyword: heat transfer; Author-Supplied Keyword: linear motors; Author-Supplied Keyword: Stirling cycle; NAICS/Industry Codes: 423830 Industrial Machinery and Equipment Merchant Wholesalers; NAICS/Industry Codes: 333910 Pump and compressor manufacturing; NAICS/Industry Codes: 333912 Air and Gas Compressor Manufacturing; NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; NAICS/Industry Codes: 333996 Fluid Power Pump and Motor Manufacturing; Number of Pages: 8p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.2202436 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20789034&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Razani, A. AU - Dodson, C. AU - Flake, B. AU - Roberts, T. T1 - The Effect of Phase-shifting Mechanisms on the Energy and Exergy Flow in Pulse Tube Refrigerators. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/04/27/ VL - 823 IS - 1 M3 - Article SP - 1572 EP - 1579 PB - American Institute of Physics SN - 0094243X AB - A first-order model is developed for a pulse tube refrigerator including the primary components and important parameters affecting the energy and exergy transport in the refrigerator. Three kinds of phase-shifting mechanisms are considered: an orifice system, a double inlet valve, and an inertance tube with the ability of combining two mechanisms. The effect of the basic parameters representing the phase-shifting mechanisms on the energy and exergy flow in the refrigerator is determined. In addition, the effect of using different parametric models representing a needle valve as the phase shifting mechanism is evaluated. Using the exergy balance on the components of the refrigerator, their irreversibilities are determined. The goal of this study is to find the effect of varying phase shifting parameters on the timed-average irreversibility distribution of components in pulse tube refrigerator as well as how this affects the refrigeration capacity and its exergetic efficiency. The model includes a recent empirical relation for pressure drop calculations in the regenerator, a simple model for the thermal analysis in the regenerator, and the important parameters for the compressor. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FORCE & energy KW - EXERGY KW - THERMODYNAMICS KW - REFRIGERATION & refrigerating machinery KW - VALVES N1 - Accession Number: 20788888; Razani, A. 1,2 Dodson, C. 3,4 Flake, B. 4 Roberts, T. 1; Affiliation: 1: Air Force Research Laboratory, Kirtland AFB, NM, USA 87117-5776 2: The University of New Mexico, Albuquerque, NM 87131 3: Applied Technology Associates, Albuquerque, NM 87198-8450 4: European Office of Aerospace Research and Development, London, UK, NW1 5TH; Source Info: 2006, Vol. 823 Issue 1, p1572; Subject Term: FORCE & energy; Subject Term: EXERGY; Subject Term: THERMODYNAMICS; Subject Term: REFRIGERATION & refrigerating machinery; Subject Term: VALVES; NAICS/Industry Codes: 333416 Heating equipment and commercial refrigeration equipment manufacturing; NAICS/Industry Codes: 333415 Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 423740 Refrigeration Equipment and Supplies Merchant Wholesalers; NAICS/Industry Codes: 332912 Fluid Power Valve and Hose Fitting Manufacturing; NAICS/Industry Codes: 332911 Industrial Valve Manufacturing; Number of Pages: 8p; Illustrations: 1 Diagram, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1063/1.2202582 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20788888&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bugby, D. AU - Stouffer, C. AU - Garzon, J. AU - Beres, M. AU - Gilchrist, A. AU - Roberts, T. AU - Davis, T. T1 - Cryogenic Thermal Management Advances during the CRYOTOOL Program. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/04/27/ VL - 823 IS - 1 M3 - Article SP - 1799 EP - 1808 PB - American Institute of Physics SN - 0094243X AB - This paper describes the cryogenic thermal management advances made during the AFRL-sponsored CRYOTOOL program. Advances occurred as a result of conducting four technology development tasks: (1) development of a differential thermal expansion cryogenic thermal switch (DTE-CTSW) made with high purity Al end-pieces and an Ultem support rod; (2) carrying out of a dual DTE-CTSW/dual cryocooler performance test to quantify CTSW benefits in a redundant cryocooler system; (3) development of a miniaturized cryogenic loop heat pipe (mini-CLHP) that combines flex link, conduction bar, and CTSW functionalities; and (4) development of an across-gimbal cryogenic thermal transport system (GCTTS) with large diameter transport line coils for optics cooling. The results are as follows. The DTE-CTSW achieved an ON conductance of 2–3.6 W/K (from 35–90 K) and an OFF resistance of 1100–2300 K/W (300–230 K warm end). The redundant cryocooler test showed modest parasitic heat leak savings when dual DTE-CTSWs were used versus when they were not used. The mini-CLHP, using neon as the working fluid, transported 2.5 W at 35 K, achieved an OFF resistance of 1555 K/W, and had cross/axial flexibilities of 100–450 N/m. Lastly, GCTTS, using nitrogen as the working fluid, transported 20 W at 100 K in a flat configuration. Additional work is needed to verify GCTTS operation in an elevated orientation. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOW temperature engineering KW - LOW temperatures KW - FLUIDS KW - THERMAL expansion KW - COOLING KW - OPTICS KW - Cryocooler Redundancy KW - Cryogenic Integration KW - Thermal Management KW - Thermal Switching KW - Thermal Transport N1 - Accession Number: 20788861; Bugby, D. 1 Stouffer, C. 1 Garzon, J. 1 Beres, M. 1 Gilchrist, A. 1 Roberts, T. 2 Davis, T. 2; Affiliation: 1: Swales Aerospace, Beltsville, Maryland, 20705, USA 2: Air Force Research Laboratory, Kirtland Air Force Base, New Mexico, 87117, USA; Source Info: 2006, Vol. 823 Issue 1, p1799; Subject Term: LOW temperature engineering; Subject Term: LOW temperatures; Subject Term: FLUIDS; Subject Term: THERMAL expansion; Subject Term: COOLING; Subject Term: OPTICS; Author-Supplied Keyword: Cryocooler Redundancy; Author-Supplied Keyword: Cryogenic Integration; Author-Supplied Keyword: Thermal Management; Author-Supplied Keyword: Thermal Switching; Author-Supplied Keyword: Thermal Transport; Number of Pages: 10p; Illustrations: 4 Diagrams, 8 Graphs; Document Type: Article L3 - 10.1063/1.2202609 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20788861&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zagarola, M. V. AU - Cragin, K. J. AU - Breedlove, J. J. AU - Davis, T. M. T1 - Progress Towards a 6–10 K Turbo-Brayton Cryocooler. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/04/27/ VL - 823 IS - 1 M3 - Article SP - 1869 EP - 1876 PB - American Institute of Physics SN - 0094243X AB - Turbomachine-based Brayton (turbo-Brayton) cryocoolers are an ideal option for long-duration space missions. Key attributes inherent to the technology are high reliability, extremely low vibration emittance, and flexible packaging and integration with instruments and spacecraft systems. The first space implementation of the technology was the NICMOS Cryocooler, which is a single-stage unit that was installed on the Hubble Space Telescope in March 2002. This cryocooler provides 7 W of cooling at 70 K and has been operating for 3.3 years (July 2005) without degradation in performance. New developments at Creare are focused on two-stage configurations with load temperatures as low as 6 K. The lower temperatures and loads have required advances in component technologies to meet aggressive targets for cryocooler mass, size and performance. The development of the electronics, compressors and intermediate turboalternator for a 6–10 K cryocooler are complete. This paper summarizes our accomplishments on the completed components, and reviews our progress towards the development of the remaining critical components, a lightweight recuperator and a high performance low temperature turboalternator. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REFRIGERATION & refrigerating machinery KW - BRAYTON cycle KW - LOW temperature engineering KW - COOLING KW - LOW temperatures KW - THERMODYNAMIC cycles KW - Cryocooler KW - Gas Bearings KW - Turbo-Brayton N1 - Accession Number: 20788853; Zagarola, M. V. 1 Cragin, K. J. 1 Breedlove, J. J. 1 Davis, T. M. 2; Affiliation: 1: Creare Inc., Hanover, New Hampshire 03755, USA 2: Air Force Research Laboratory, Space Vehicle Directorate, Space Cryogenic Technology Group, Kirtland AFB, New Mexico 87117, USA; Source Info: 2006, Vol. 823 Issue 1, p1869; Subject Term: REFRIGERATION & refrigerating machinery; Subject Term: BRAYTON cycle; Subject Term: LOW temperature engineering; Subject Term: COOLING; Subject Term: LOW temperatures; Subject Term: THERMODYNAMIC cycles; Author-Supplied Keyword: Cryocooler; Author-Supplied Keyword: Gas Bearings; Author-Supplied Keyword: Turbo-Brayton; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 423740 Refrigeration Equipment and Supplies Merchant Wholesalers; NAICS/Industry Codes: 333416 Heating equipment and commercial refrigeration equipment manufacturing; NAICS/Industry Codes: 333415 Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing; Number of Pages: 8p; Illustrations: 1 Color Photograph, 2 Diagrams, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.2202617 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20788853&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Olson, J. R. AU - Davis, T. T1 - Development of a 3-stage Pulse Tube Cryocooler for Cooling at 10K and 75K. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/04/27/ VL - 823 IS - 1 M3 - Article SP - 1885 EP - 1892 PB - American Institute of Physics SN - 0094243X AB - Under contract with the Air Force Research Lab (AFRL), Lockheed Martin has built and tested a 3-stage pulse tube cryocooler which provides cooling at 10K and 75K. The cooler was designed for 200mW cooling at 10K and 8W cooling at 75K. The pulse tube is a simple 3-stage coldhead with no moving parts, driven by a long-life linear flexure-bearing clearance-seal compressor. The coldhead is a robust U-tube arrangement, with all metal seals for long life. Performance data will be presented. Future Air Force and Department of Defense (DoD) satellites will require efficient, low temperature cryocoolers to support space surveillance, missile defense, and other mission applications. The use of Very Long Wave Infrared (VLWIR) focal planes using arsenic doped silicon detectors operating at 10K which can detect to 25 micron wavelength has long been sought as the solution to the mid course missile defense mission. The immaturity of 10K cryocooler technology has impeded the use of VLWIR focal planes in current space payloads. A viable, efficient 10K cryocooler could provide further benefits through the use of on-focal plane readout and signal processing using low temperature superconducting electronics. The resultant smaller apertures produce cheaper, lighter sensors, much easier to host in a space-based system. An efficient, compact 10K cryocooler would provide significant capability improvements to future DoD systems. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REFRIGERATION & refrigerating machinery KW - AEROSPACE engineering KW - LOW temperature engineering KW - COOLING KW - LOW temperatures KW - Cryocooler KW - Cryogenics KW - Pulse Tube N1 - Accession Number: 20788851; Olson, J. R. 1 Davis, T. 2; Affiliation: 1: Lockheed Martin Space Systems Company, Advanced Technology Center, Palo Alto, CA, 94304, USA 2: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, NM, 87117, USA; Source Info: 2006, Vol. 823 Issue 1, p1885; Subject Term: REFRIGERATION & refrigerating machinery; Subject Term: AEROSPACE engineering; Subject Term: LOW temperature engineering; Subject Term: COOLING; Subject Term: LOW temperatures; Author-Supplied Keyword: Cryocooler; Author-Supplied Keyword: Cryogenics; Author-Supplied Keyword: Pulse Tube; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 423740 Refrigeration Equipment and Supplies Merchant Wholesalers; NAICS/Industry Codes: 333416 Heating equipment and commercial refrigeration equipment manufacturing; NAICS/Industry Codes: 333415 Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing; Number of Pages: 8p; Illustrations: 1 Diagram, 8 Graphs; Document Type: Article L3 - 10.1063/1.2202619 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20788851&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hagen, J. A. AU - Li, W. AU - Steckl, A. J. AU - Grote, J. G. T1 - Enhanced emission efficiency in organic light-emitting diodes using deoxyribonucleic acid complex as an electron blocking layer. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/04/24/ VL - 88 IS - 17 M3 - Article SP - 171109 PB - American Institute of Physics SN - 00036951 AB - Enhanced electroluminescent efficiency using a deoxyribonucleic acid (DNA) complex as an electron blocking (EB) material has been demonstrated in both green- and blue-emitting organic light-emitting diodes (OLEDs). The resulting so-called BioLEDs showed a maximum luminous efficiency of 8.2 and 0.8 cd/A, respectively. The DNA-based BioLEDs were as much as 10× more efficient and 30× brighter than their OLED counterparts. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHT emitting diodes KW - DNA KW - SEMICONDUCTOR diodes KW - ELECTROLUMINESCENT devices KW - LIGHT sources N1 - Accession Number: 20788729; Hagen, J. A. 1 Li, W. 1 Steckl, A. J. 1; Email Address: a.steckl@uc.edu Grote, J. G. 2; Affiliation: 1: University of Cincinnati, Nanoelectronics Laboratory, Cincinnati, Ohio 45221-0030 2: U. S. Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio 45324; Source Info: 4/24/2006, Vol. 88 Issue 17, p171109; Subject Term: LIGHT emitting diodes; Subject Term: DNA; Subject Term: SEMICONDUCTOR diodes; Subject Term: ELECTROLUMINESCENT devices; Subject Term: LIGHT sources; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 3p; Illustrations: 1 Color Photograph, 3 Graphs; Document Type: Article L3 - 10.1063/1.2197973 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20788729&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhang, Yudong AU - Lee, Sangho AU - Yoonessi, Mitra AU - Liang, Kaiwen AU - Pittman, Charles U. T1 - Phenolic resin–trisilanolphenyl polyhedral oligomeric silsesquioxane (POSS) hybrid nanocomposites: Structure and properties JO - Polymer JF - Polymer Y1 - 2006/04/19/ VL - 47 IS - 9 M3 - Article SP - 2984 EP - 2996 SN - 00323861 AB - Abstract: The structure and properties of organic–inorganic hybrid nanocomposites prepared from a resole phenolic resin and a POSS mixture containing >95wt% trisilanolphenyl POSS was investigated by POM (polarized optical microscopy), SEM, TEM, WAXD, FT-IR, DSC, and TGA techniques. Composites with 1.0–10.4wt% of POSS were prepared by dissolving the POSS and the phenolic resin into THF, followed by solvent removal and curing. Both nano- and micro-sized POSS filler aggregates and particles were shown to be heterogeneously dispersed in the cured matrix by POM, TEM, SEM, and X-EDS. POSS was found everywhere, including in both dispersed phase domains and in the matrix. The nanocomposite morphology appears to form by a multi-step POSS aggregation during the process of phase separation. Both the matrix and dispersed ‘particulate’ phase domains are mixtures of phenolic resin and POSS. POSS micro-crystals act as the core of the dispersed phase. The bigger dispersed domains consist of smaller particles or aggregates of POSS molecules that exhibit some order but regions of matrix resin are interspersed. A WAXD peak at 2θ∼7.3° indicates crystalline order in the POSS aggregates. This characteristic peak''s intensity increases with an increase in POSS loading, suggesting that more POSS molecules have aggregated or crystallized. FT-IR spectra confirm that hydrogen bonding exists between the phenolic resin and POSS Si–OH groups. This increases their mutual compatibility, but H-bonding does not prevent POSS aggregation and phase separation during curing. TGA measurements in air confirmed the temperature for 5% mass loss in increases with increase of POSS loading and at T>550° the thermal stability increases more sharply with POSS loading. The nanocomposite glass transition temperatures (T g) are only slightly be affected by the POSS filler. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHENOLIC resins KW - PHENOLS KW - HYDROGEN bonding KW - MOLECULES KW - GLASS transition temperature KW - CRYSTALLIZATION KW - Organic–inorganic hybrids nanocomposites KW - Polyhedral oligomeric silsesquioxanes (POSS) KW - Structure and properties N1 - Accession Number: 20732500; Zhang, Yudong 1 Lee, Sangho 1 Yoonessi, Mitra 2 Liang, Kaiwen 3 Pittman, Charles U. 1; Email Address: cpittman@chemistry.msstate.edu; Affiliation: 1: Department of Chemistry, Mississippi State University, P.O. Box 9573, Mississippi State, MS 39762, USA 2: Air Force Research Laboratory, 2941 P Street, Bldg. 654, Wright-Patterson AFB, OH 45433, USA 3: Dave C. Swalm School of Chemical Engineering, Mississippi State University, Mississippi State, MS 39762, USA; Source Info: Apr2006, Vol. 47 Issue 9, p2984; Subject Term: PHENOLIC resins; Subject Term: PHENOLS; Subject Term: HYDROGEN bonding; Subject Term: MOLECULES; Subject Term: GLASS transition temperature; Subject Term: CRYSTALLIZATION; Author-Supplied Keyword: Organic–inorganic hybrids nanocomposites; Author-Supplied Keyword: Polyhedral oligomeric silsesquioxanes (POSS); Author-Supplied Keyword: Structure and properties; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.polymer.2006.03.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20732500&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eyink, K. G. AU - Tomich, D. H. AU - Pitz, J. J. AU - Grazulis, L. AU - Mahalingam, K. AU - Shank, J. M. T1 - Self-assembly of heterojunction quantum dots. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/04/17/ VL - 88 IS - 16 M3 - Article SP - 163113 PB - American Institute of Physics SN - 00036951 AB - The fabrication of a self-assembled heterojunction quantum dot structure composed of multiple materials is reported. This structure consists of a composite dot formed of an initial core of one material which results from normal self-assembly, followed by the epitaxy of a crown composed of a similarly strained material. Finally the entire dot structure is capped with a barrier material closely lattice matched to the substrate. In this demonstration, self-assembled InAs quantum dots were first formed on a GaAs substrate and subsequently crowned with GaSb. The entire structure was encapsulated with a GaAs cap layer. Atomic force microscopy shows that additional nucleation between the InAs layers has been minimized and cross-sectional transmission electron microscopy shows the formation of the composite structure. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM dots KW - HETEROJUNCTIONS KW - QUANTUM electronics KW - SEMICONDUCTORS KW - EPITAXY N1 - Accession Number: 20695048; Eyink, K. G. 1; Email Address: kurt.eyink@wpafb.af.mil Tomich, D. H. 1 Pitz, J. J. 1 Grazulis, L. 2 Mahalingam, K. 3 Shank, J. M. 4; Affiliation: 1: AFRL/MLPS Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7707 2: University of Dayton, Dayton, Ohio 45469-0178 3: Universal Technology Corporation, Dayton, Ohio 45432-2600 4: Southwestern Ohio Council of Higher Education, Dayton, Ohio 45420-4020; Source Info: 4/17/2006, Vol. 88 Issue 16, p163113; Subject Term: QUANTUM dots; Subject Term: HETEROJUNCTIONS; Subject Term: QUANTUM electronics; Subject Term: SEMICONDUCTORS; Subject Term: EPITAXY; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 2 Black and White Photographs, 1 Graph; Document Type: Article L3 - 10.1063/1.2197930 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20695048&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fathollahi, B. AU - Mauldin, M. AU - Chau, P.C. AU - Wapner, P.G. AU - Hoffman, W.P. T1 - Integrated mesophase injection and in situ transformation in fabrication of high-density carbon–carbon composites JO - Carbon JF - Carbon Y1 - 2006/04/15/ VL - 44 IS - 5 M3 - Article SP - 854 EP - 858 SN - 00086223 AB - Abstract: The fabrication of high-density carbon–carbon composite by integrating mesophase injection and in situ transformation methods in different processing cycles was examined. Non-rigidized preform disks 30mm thick and 68mm in diameter were rigidized by an initial in situ transformation cycle to an average density of 0.92g/cm3 after carbonization. The rigidized preforms were subsequently densified by 1–3 cycles of injection with the AR mesophase pitch. After each injection cycle, the flow-oriented mesophase matrix was stabilized and carbonized to 1150°C. The composites from each injection cycle were further densified by a final in situ cycle. A final density of nearly 2g/cm3 was attained after three injection cycles and a final in situ cycle. All the cycles except the third injection required only ambient or very moderate pressures. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON KW - CARBONIZATION KW - DENSITY KW - PRESSURE KW - COMPOSITE materials KW - Carbon composite KW - Mesophase KW - Microstructure KW - Optical microscopy N1 - Accession Number: 19406808; Fathollahi, B. 1; Email Address: bfatholl@ucsd.edu Mauldin, M. 1 Chau, P.C. 1 Wapner, P.G. 2 Hoffman, W.P. 3; Affiliation: 1: Chemical Engineering Program, University of California, San Diego, La Jolla, CA 92093-0411, USA 2: ERC Inc., 10 East Saturn Blvd., Edwards, CA 93524, USA 3: Air Force Research Laboratory, 10 East Saturn Blvd., Edwards, CA 93524, USA; Source Info: Apr2006, Vol. 44 Issue 5, p854; Subject Term: CARBON; Subject Term: CARBONIZATION; Subject Term: DENSITY; Subject Term: PRESSURE; Subject Term: COMPOSITE materials; Author-Supplied Keyword: Carbon composite; Author-Supplied Keyword: Mesophase; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Optical microscopy; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.carbon.2005.10.030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19406808&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Delcomyn, Carrie A. AU - Bushway, Karen E. AU - Henley, Michael V. T1 - Inactivation of Biological Agents Using Neutral Oxone-Chloride Solutions. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2006/04/15/ VL - 40 IS - 8 M3 - Article SP - 2759 EP - 2764 SN - 0013936X AB - Bleach solutions containing the active ingredient hypochlorite (OCl-) serve as powerful biological disinfectants but are highly caustic and present a significant compatibility issue when applied to contaminated equipment or terrain. A neutral, bicarbonate-buffered aqueous solution of Oxone (2K2HSO5·KHSO4·K2SO4) and sodium chloride that rapidly generates hypochlorite and hypochlorous acid (HOCl) in situ was evaluated as a new alternative to bleach for the inactivation of biological agents. The solution produced a free chlorine (HOCl + OCl-) concentration of 3.3 g/L and achieved ≥5.8-log inactivation of spores of Bacillus atrophaeus, Bacillus thuringiensis, Aspergillus niger, and Escherichia coli vegetative cells in 1 min at 22 °C. Seawater was an effective substitute for solid sodium chloride and inactivated 5 to 8 logs of each organism in 10 min over temperatures ranging from -5 °C to 55 °C. Sporicidal effectiveness increased as free chlorine concentrations shifted from OCl- to HOCl. Neutrally buffered Oxone-chloride and Oxone-seawater solutions are mitigation alternatives for biologically contaminated equipment and environments that would otherwise be decontaminated using caustic bleach solutions. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BLEACHING materials KW - HYPOCHLORITES KW - DISINFECTION & disinfectants KW - BIOLOGICAL decontamination KW - SALT KW - BIOLOGICAL warfare KW - NEUTRALIZATION (Chemistry) KW - OZONE-depleting substances KW - BACILLUS thuringiensis N1 - Accession Number: 20790348; Delcomyn, Carrie A. 1; Email Address: carrie.delcomyn.ctr@tyndall.af.mil Bushway, Karen E. 1 Henley, Michael V. 2; Affiliation: 1: Applied Research Associates, Inc., , 139 Barnes Drive, Tyndall AFB, Florida 32403 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, 139 Barnes Drive, Tyndall AFB, Florida 32403; Source Info: 4/15/2006, Vol. 40 Issue 8, p2759; Subject Term: BLEACHING materials; Subject Term: HYPOCHLORITES; Subject Term: DISINFECTION & disinfectants; Subject Term: BIOLOGICAL decontamination; Subject Term: SALT; Subject Term: BIOLOGICAL warfare; Subject Term: NEUTRALIZATION (Chemistry); Subject Term: OZONE-depleting substances; Subject Term: BACILLUS thuringiensis; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325612 Polish and Other Sanitation Good Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 311940 Seasoning and dressing manufacturing; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; NAICS/Industry Codes: 311942 Spice and Extract Manufacturing; Number of Pages: 6p; Illustrations: 2 Charts, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20790348&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhdanov, B.V. AU - Ehrenreich, T. AU - Knize, R.J. T1 - Highly efficient optically pumped cesium vapor laser JO - Optics Communications JF - Optics Communications Y1 - 2006/04/15/ VL - 260 IS - 2 M3 - Article SP - 696 EP - 698 SN - 00304018 AB - Abstract: We have demonstrated an optically pumped continuous wave Cs vapor laser with an input power to output power slope efficiency of 81%. The laser power was 0.35W for an input power of 0.57W, yielding an overall optical efficiency of 63%. [Copyright &y& Elsevier] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - CESIUM vapor KW - OPTICAL instruments KW - OPTICAL pumping KW - Alkali lasers KW - Optically pumped lasers N1 - Accession Number: 20187841; Zhdanov, B.V.; Email Address: boris.zhdanov@usafa.af.mil Ehrenreich, T. 1 Knize, R.J. 1; Affiliation: 1: US Air Force Academy, Department of Physics, 2354 Fairchild Drive, Suite 2A31, USAF Academy, CO 80840, USA; Source Info: Apr2006, Vol. 260 Issue 2, p696; Subject Term: LASERS; Subject Term: CESIUM vapor; Subject Term: OPTICAL instruments; Subject Term: OPTICAL pumping; Author-Supplied Keyword: Alkali lasers; Author-Supplied Keyword: Optically pumped lasers; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 446130 Optical Goods Stores; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.optcom.2005.11.042 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20187841&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zvanut, M.E. AU - Lee, Wonwoo AU - Mitchel, W.C. AU - Mitchell, W.D. AU - Landis, G. T1 - The acceptor level for vanadium in 4H and 6H SiC JO - Physica B JF - Physica B Y1 - 2006/04/15/ VL - 376-377 M3 - Article SP - 346 EP - 349 SN - 09214526 AB - Abstract: Electron paramagnetic resonance (EPR) and temperature-dependent Hall measurements were performed on seven different vanadium-doped semi-insulating SiC samples. Comparison of the EPR data and carrier activation energy suggests that the acceptor level for vanadium is 1.1eV below the conduction band edge (E c) in 4H SiC and within 0.86 of E c in the 6H polytype. Photo-induced EPR results support the level assignments. However, analysis of the V4+ spectra in 4H samples suggests that the dominant vanadium EPR signal monitored in the 4H samples used for this experiment does not represent a simple isolated impurity. Rather, the results reflect a strained or complex defect. [Copyright &y& Elsevier] AB - Copyright of Physica B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON paramagnetic resonance KW - VANADIUM KW - SPECTRUM analysis KW - MAGNETIC resonance KW - Carbon vacancy KW - EPR KW - Semi-insulating KW - SiC KW - Vanadium N1 - Accession Number: 20269362; Zvanut, M.E. 1; Email Address: mezvanut@uab.edu Lee, Wonwoo 1 Mitchel, W.C. 2 Mitchell, W.D. 2 Landis, G. 2; Affiliation: 1: Department of Physics, University of Alabama at Birmingham, 1530 3rd Ave S, Birmingham, AL 35244, USA 2: Air Force Research Laboratory/Materials and Manufacturing Directorate, WPAFB, OH 45433, USA; Source Info: Apr2006, Vol. 376-377, p346; Subject Term: ELECTRON paramagnetic resonance; Subject Term: VANADIUM; Subject Term: SPECTRUM analysis; Subject Term: MAGNETIC resonance; Author-Supplied Keyword: Carbon vacancy; Author-Supplied Keyword: EPR; Author-Supplied Keyword: Semi-insulating; Author-Supplied Keyword: SiC; Author-Supplied Keyword: Vanadium; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.physb.2005.12.089 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20269362&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Krtschil, A. AU - Look, D.C. AU - Fang, Z.-Q. AU - Dadgar, A. AU - Diez, A. AU - Krost, A. T1 - Local p-type conductivity in n-GaN and n-ZnO layers due to inhomogeneous dopant incorporation JO - Physica B JF - Physica B Y1 - 2006/04/15/ VL - 376-377 M3 - Article SP - 703 EP - 706 SN - 09214526 AB - Abstract: We report on scanning capacitance microscopy (SCM) investigations of Fe-doped GaN and nitrogen-doped ZnO layers. Macroscopically, these samples electrically behave in conventional I–V and C–V measurements like semi-insulating or n-type material, respectively. However, in SCM we found local p-type regions surrounded by an n-type matrix instead of homogeneous and uniform layer conductivity. A comparison with topography reveales that these p-type islands with extensions in the micrometer scale exclusively appear in the vicinity of structural defects and grain boundaries. This doping related effect is discussed in terms of selective dopant incorporation at these defects. [Copyright &y& Elsevier] AB - Copyright of Physica B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IRON KW - NITROGEN KW - ZINC oxide KW - MICROMETERS (Instruments) KW - Conductivity domains KW - Defects KW - Mixed conductivity KW - p-Type ZnO N1 - Accession Number: 20269451; Krtschil, A. 1; Email Address: andre.krtschil@physik.uni-magdeburg.de Look, D.C. 2,3 Fang, Z.-Q. 2,3 Dadgar, A. 1 Diez, A. 1 Krost, A. 1; Affiliation: 1: Institute of Experimental Physics, Otto-von-Guericke-University Magdeburg, PO Box 4120, Magdeburg, 39016, Germany 2: Semiconductor Research Center, Wright State University, Dayton, OH 45435, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Apr2006, Vol. 376-377, p703; Subject Term: IRON; Subject Term: NITROGEN; Subject Term: ZINC oxide; Subject Term: MICROMETERS (Instruments); Author-Supplied Keyword: Conductivity domains; Author-Supplied Keyword: Defects; Author-Supplied Keyword: Mixed conductivity; Author-Supplied Keyword: p-Type ZnO; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 332216 Saw Blade and Handtool Manufacturing; NAICS/Industry Codes: 332210 Cutlery and hand tool manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.physb.2005.12.176 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20269451&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Thomas M. AU - Friedman, Jeffrey F. AU - Williamson, John S. AU - Viggiano, A. A. T1 - Rate constants for the reactions of CO3- and O3- with SO2 from 300 to 1440 K. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2006/04/14/ VL - 124 IS - 14 M3 - Article SP - 144305 PB - American Institute of Physics SN - 00219606 AB - Rate constants for the reactions of CO3- and O3- with SO2 have been measured between 300 and 1440 K in a high temperature flowing afterglow apparatus. The CO3- rate constants near to the collision rate at low temperatures and fall by about a factor of 50 with temperature until a broad minimum is reached at 900–1300 K. The highest temperature point shows the increasing rate constant. Comparison to drift tube data taken in a helium buffer shows that total energy controls the reactivity, presumably because the reaction goes through a long lived complex even at 1440 K. The reaction of O3- with SO2 was studied up to 1400 K. The rate constant is collisional until 700 K and then decreases with increasing temperature. Rate constants measured at 1300 and 1400 K appear to show an increase, but that observation is questionable since O3- could not be made cleanly. The O3- data at 1200 K and below show that total energy controls reactivity in that range. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL reactions KW - COLLISIONS (Physics) KW - IONOSPHERE KW - LOW temperatures KW - HIGH temperatures KW - PHYSICAL & theoretical chemistry N1 - Accession Number: 20517927; Miller, Thomas M. 1 Friedman, Jeffrey F. 1,2 Williamson, John S. 1 Viggiano, A. A. 1; Email Address: albert.viggiano@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts 01731-3010 2: Department of Physics, University of Puerto Rico—Mayaguez, Mayaguez, Puerto Rico 00681-9016; Source Info: 4/14/2006, Vol. 124 Issue 14, p144305; Subject Term: CHEMICAL reactions; Subject Term: COLLISIONS (Physics); Subject Term: IONOSPHERE; Subject Term: LOW temperatures; Subject Term: HIGH temperatures; Subject Term: PHYSICAL & theoretical chemistry; Number of Pages: 5p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.2181572 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20517927&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thomas M. Cooper AU - Douglas M. Krein AU - Aaron R. Burke AU - Daniel G. McLean AU - Joy E. Rogers AU - Jonathan E. Slagle AU - Paul A. Fleitz T1 - Spectroscopic Characterization of a Series of Platinum Acetylide Complexes Having a Localized Triplet Exciton. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2006/04/06/ VL - 110 IS - 13 M3 - Article SP - 4369 EP - 4375 SN - 10895639 AB - In this work, we describe the spectroscopic properties of a series of platinum complexes containing one acetylide ligand per platinum, having the chemical formula trans-Pt(PBu3)2((C≡CC6H4)n—H)Cl, n = 1−3 (designated as half-PEn-Pt) and compare their spectroscopic behavior with the well-characterized series trans-Pt(PBu3)2((C≡CC6H4)n—H)2, n = 1−3 (designated as PEn-Pt). This comparison aims to determine if the triplet state of PEn-Pt is confined to one ligand or delocalized across the central platinum atom. We measured ground-state absorption spectra, fluorescence spectra, phosphorescence spectra, and triplet-state absorption spectra. The ground-state absorption spectra and fluorescence spectra both showed a blue shift when comparing half-PEn-Pt with PEn-Pt, showing the S1 state is delocalized across the platinum. In contrast, the phosphorescence spectra of the two types of compounds had the same 0−0 band energy, showing the T1 state was confined to one ligand in PEn-Pt. The triplet state absorption spectra blue shifted when comparing half-PEn-Pt with PEn-Pt, showing the Tn state was delocalized across the central platinum. This comparison supports recently published work that suggested this confinement effect (Rogers, J. E et al. J. Chem. Phys. 2005, 122, 214701). [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSORPTION KW - PLATINUM KW - SPECTRUM analysis KW - ABSORPTION spectra KW - EXCITON theory N1 - Accession Number: 20492030; Thomas M. Cooper 1 Douglas M. Krein 1 Aaron R. Burke 1 Daniel G. McLean 1 Joy E. Rogers 1 Jonathan E. Slagle 1 Paul A. Fleitz 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, Anteon Corporation, Dayton, Ohio 45431, SAIC, Dayton, Ohio 45434, UES, Inc., Dayton, Ohio 45432, and AT&T Corporation, Dayton, Ohio 45434; Source Info: Apr2006, Vol. 110 Issue 13, p4369; Subject Term: ABSORPTION; Subject Term: PLATINUM; Subject Term: SPECTRUM analysis; Subject Term: ABSORPTION spectra; Subject Term: EXCITON theory; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20492030&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Qin, Haihu AU - Mather, Patrick T. AU - Baek, Jong-Beom AU - Tan, Loon-Seng T1 - Modification of bisphenol-A based bismaleimide resin (BPA-BMI) with an allyl-terminated hyperbranched polyimide (AT-PAEKI) JO - Polymer JF - Polymer Y1 - 2006/04/05/ VL - 47 IS - 8 M3 - Article SP - 2813 EP - 2821 SN - 00323861 AB - Abstract: As a continuation of previous work involving synthesis of an allyl-functionalized hyperbranched polyimide, AT-PAEKI, we have studied the use of this reactive polymer as a modifier of bisphenol-A based bismaleimide resin (BPA-BMI). This was pursued in anticipation of improvements in processability as well as physical properties including glass transition temperature, elastic modulus, and fracture toughness. Apparent miscibility, indicated by optical clarity with a single T g, was observed for compositions containing up to 16wt% AT-PAEKI. Additionally, we observed complete suppression of monomer crystallization and a slight increase in the overall cure exotherm. By rheological characterization, blends containing 4wt% AT-PAEKI were found to feature a dramatic (65-fold) reduction in the viscosity minimum during heating. Dynamic mechanical analysis (DMA) showed that the addition of 2, 4, 8wt%. AT-PAEKI increases the cured modulus by approximately 10% from a base value of 3.4GPa, while adding 16wt% AT-PAEKI decreases the modulus slightly to 3.3GPa. DMA also revealed that the cured glass transition temperature increases monotonically with the addition of AT-PAEKI. Fracture toughness was gauged using the single edge notched beam methodology to yield the critical stress intensity factor, K IC. Our results showed a modest toughening effect (from 0.48 to 0.55MPa m1/2) upon the addition of AT-PAEKI. We conclude that AT-PAEKI may serve as an effective reactive processing aid with slight improvements in T g, modulus, and fracture toughness. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BISPHENOL A KW - POLYMERS KW - CRYSTALLIZATION KW - VISCOSITY KW - POLYIMIDES KW - Chemorheology KW - Fracture toughness KW - Hyperbranched polymer N1 - Accession Number: 20402066; Qin, Haihu 1 Mather, Patrick T. 1,2; Email Address: patrick.mather@case.edu Baek, Jong-Beom 3,4 Tan, Loon-Seng 5; Affiliation: 1: Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA 2: Chemical Engineering Department, University of Connecticut, Storrs, CT 06269, USA 3: School of Chemical Engineering, Chungbuk National University, San 48, Gaesin-Dong, Heungdeok-Gu, Cheongju, Chungbuk 361-763, South Korea 4: University of Dayton Research Inst., 300 College Park, Dayton, OH 45469, USA 5: Polymer Branch, AFRL/MLBP, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Apr2006, Vol. 47 Issue 8, p2813; Subject Term: BISPHENOL A; Subject Term: POLYMERS; Subject Term: CRYSTALLIZATION; Subject Term: VISCOSITY; Subject Term: POLYIMIDES; Author-Supplied Keyword: Chemorheology; Author-Supplied Keyword: Fracture toughness; Author-Supplied Keyword: Hyperbranched polymer; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.polymer.2006.02.062 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20402066&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reynolds, D. C. AU - Litton, C. W. AU - Collins, T. C. AU - Hoelscher, J. E. AU - Nause, J. T1 - Observation of donor-acceptor pair spectra in the photoluminescence of H- and Zn-implanted ZnO single crystals. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/04/03/ VL - 88 IS - 14 M3 - Article SP - 141919 PB - American Institute of Physics SN - 00036951 AB - Donor-acceptor (D-A) pair spectra have been observed in the photoluminescence radiative recombination of selected donor bound exciton complexes in zinc oxide (ZnO) single crystals that have been ion implantation doped with H and Zn atoms and subsequently annealed in a nitrogen (N2) atmosphere at temperatures in the range of 700–800 °C. Observations of the D-A pair spectra are explained as the bound states of Hopfield’s bound exciton complex model, in terms of the effective mass approximation of the wurtzitic ZnO energy band structure. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRUM analysis KW - PHOTOLUMINESCENCE KW - CRYSTALS KW - ION implantation KW - FREE electron theory of metals KW - PHYSICS N1 - Accession Number: 20735938; Reynolds, D. C. 1 Litton, C. W. 1; Email Address: cole.litton@sbcglobal.net Collins, T. C. 2 Hoelscher, J. E. 3 Nause, J. 4; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate (AFRL/MLPS), Wright-Patterson AFB, Ohio 45433 2: Oklahoma State University, Whitehurst Hall, Stillwater, Oklahoma 74354 3: Semiconductor Research Institute, Wright State University, Dayton, Ohio 45434 4: Cermet, Inc., Atlanta, Georgia; Source Info: 4/3/2006, Vol. 88 Issue 14, p141919; Subject Term: SPECTRUM analysis; Subject Term: PHOTOLUMINESCENCE; Subject Term: CRYSTALS; Subject Term: ION implantation; Subject Term: FREE electron theory of metals; Subject Term: PHYSICS; Number of Pages: 3p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.2188046 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20735938&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Grossie, David A. AU - Feld, William A. AU - Scanlon, Lawrence AU - Sandi, Giselle AU - Wawrzak, Zdzislaw T1 - Di-μ-acetone-κ2 O: O-bis­[(acetone-κ O)aqua­lithium(I)] di-μ-acetone-κ2 O: O-bis­[diaqua­lithium(I)] tetra­kis{[phthalocyaninato(2−)-κ4 N, N′, N′′, N′′′]lithiate(I)} JO - Acta Crystallographica: Section E (Wiley-Blackwell) JF - Acta Crystallographica: Section E (Wiley-Blackwell) Y1 - 2006/04// VL - 62 IS - 4 M3 - Other SP - m827 EP - m829 SN - 16005368 AB - The crystals of the title compound, [Li2(C3H6O)4(H2O)2][Li2(C3H6O)2(H2O)4] [Li(C32H16N8)]4, were obtained by a recrystallization of dilithium phthalocyanine from an acetone/water/toluene solution. The title structure consists of two independent Li–phthalocyanine complexes along with acetone-bridged lithium dimers. The lithium dimers are located on inversion centers. The crystal structure is stabilized by a network of hydrogen bonds. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Crystallographica: Section E (Wiley-Blackwell) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALLIZATION KW - PHTHALOCYANINES KW - ACETONE KW - TOLUENE diamine KW - HYDROGEN bonding KW - LITHIUM N1 - Accession Number: 20442620; Grossie, David A. 1; Email Address: david.grossie@wright.edu Feld, William A. 1 Scanlon, Lawrence 2 Sandi, Giselle 3 Wawrzak, Zdzislaw 4; Affiliation: 1: Department of Chemistry, Wright State University, Dayton, Ohio 45435, USA 2: Air Force Research Laboratory, Electrochemistry and Thermal Sciences Branch, PRPS, WPAFB, Ohio 45433, USA 3: Chemistry Division, Argonne National Laboratory, 9700 Cass Ave., Argonne, IL 40439, USA 4: DuPont-Northwestern-Dow Collaborative Access Team, Argonne National Laboratory, 9700 Cass Avenue, Argonne, IL 40439, USA; Source Info: Apr2006, Vol. 62 Issue 4, pm827; Subject Term: CRYSTALLIZATION; Subject Term: PHTHALOCYANINES; Subject Term: ACETONE; Subject Term: TOLUENE diamine; Subject Term: HYDROGEN bonding; Subject Term: LITHIUM; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; NAICS/Industry Codes: 325130 Synthetic Dye and Pigment Manufacturing; Number of Pages: 1p; Illustrations: 6 Diagrams, 2 Charts; Document Type: Other L3 - 10.1107/S1600536806008488 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20442620&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rahaman, Mohamed N. AU - Gross, Jacob R. AU - Dutton, Rollie E. AU - Wang, Hsin T1 - Phase stability, sintering, and thermal conductivity of plasma-sprayed ZrO2–Gd2O3 compositions for potential thermal barrier coating applications JO - Acta Materialia JF - Acta Materialia Y1 - 2006/04// VL - 54 IS - 6 M3 - Article SP - 1615 EP - 1621 SN - 13596454 AB - Abstract: Structural changes resulting from sintering and phase transformation limit the high-temperature durability of ZrO2-based thermal barrier coatings (TBCs). The objective of this study was to investigate the use of Gd2O3 as a stabilizer for ZrO2-based TBC compositions. The influence of Gd2O3 concentration (4–20mol.%) on the sintering and phase stability of plasma-sprayed ZrO2 powders was investigated and the data were compared with those for the state-of-the-art Y2O3-stabilized ZrO2. At an equivalent concentration (4mol.%), Gd2O3-stabilized ZrO2 sintered more slowly but had a lower resistance to destabilization of the metastable tetragonal (t′) phase, when compared to Y2O3-stabilized ZrO2. The thermal conductivity of Gd2O3-stabilized ZrO2 was lower than that of Y2O3-stabilized ZrO2. Factors influencing the sintering and phase transformation of plasma-sprayed Gd2O3-stabilized ZrO2 are discussed. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHASE transformations (Physics) KW - HIGH temperatures KW - SINTERING KW - COATING processes KW - ZIRCONIUM KW - Phase transformation KW - Plasma spraying KW - Sintering KW - Thermal barrier coating KW - Thermal conductivity N1 - Accession Number: 19849157; Rahaman, Mohamed N. 1; Email Address: rahaman@umr.edu Gross, Jacob R. 1 Dutton, Rollie E. 2 Wang, Hsin 3; Affiliation: 1: Department of Materials Science and Engineering, University of Missouri-Rolla, 223 McNutt Hall, Rolla, MO 65409-0340, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, OH 45433, USA 3: Oak Ridge National Laboratory, High Temperature Materials Laboratory, Oak Ridge, TN 37831, USA; Source Info: Apr2006, Vol. 54 Issue 6, p1615; Subject Term: PHASE transformations (Physics); Subject Term: HIGH temperatures; Subject Term: SINTERING; Subject Term: COATING processes; Subject Term: ZIRCONIUM; Author-Supplied Keyword: Phase transformation; Author-Supplied Keyword: Plasma spraying; Author-Supplied Keyword: Sintering; Author-Supplied Keyword: Thermal barrier coating; Author-Supplied Keyword: Thermal conductivity; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 212210 Iron Ore Mining; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.actamat.2005.11.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19849157&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Zurbuchen, T.H. AU - Smart, D.F. T1 - Energetic particle acceleration – the injection problem: Who gets to play? JO - Advances in Space Research JF - Advances in Space Research Y1 - 2006/04// VL - 37 IS - 8 M3 - Editorial SP - 1407 EP - 1407 SN - 02731177 N1 - Accession Number: 20969475; Zurbuchen, T.H. 1 Smart, D.F. 2; Email Address: sssrc@msn.com; Affiliation: 1: Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, 2455 Hayward Street, Ann Arbor, MI 48109, USA 2: Emeritus, Air Force Research Laboratory (VSBX), 29 Randolph Road, Hanscom AFB, Bedford, MA 01731, USA; Source Info: Apr2006, Vol. 37 Issue 8, p1407; Number of Pages: 1p; Document Type: Editorial L3 - 10.1016/j.asr.2006.03.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20969475&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Woo-Young Kim AU - Grandhi, Ramana V. AU - Haney, Mark T1 - Multiobjective Evolutionary Structural Optimization Using Combined Static/Dynamic Control Parameters. JO - AIAA Journal JF - AIAA Journal Y1 - 2006/04// VL - 44 IS - 4 M3 - Article SP - 794 EP - 802 SN - 00011452 AB - A thermal protection system (TPS) is responsible for protecting a spacecraft's components from melting due to high reentry temperatures. In the design of TPS, both maximum thermal stress and minimum natural frequency must be considered due to the combined thermoacoustic environment inherent in high-speed vehicle applications. A multiobjective structural optimization method for the three-dimensional acreage TPS design is developed using an evolutionary structural optimization (ESO) algorithm. The static control parameter used to find the optimum in minimum thermal stress design is modified to address an irregular mode-switching phenomenon, as well as to improve the modal stiffness in dynamic analysis. Two objectives are optimized simultaneously, namely, the maximization of fundamental natural frequency and the minimization of maximum thermal stress. The proposed modified control parameter is demonstrated in the design of a metallic TPS using the method of weighted objectives. The results are then compared with the conventional ESO sensitivity approach. This work concludes by applying the methodology which makes use of both topology and shape optimization in the design of an acreage TPS. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL stresses KW - SPACE vehicles KW - TOPOLOGY KW - THERMOELASTICITY KW - AERONAUTICS -- United States KW - TEMPERATURE KW - AIRCRAFT industry N1 - Accession Number: 24518263; Woo-Young Kim 1 Grandhi, Ramana V. 1 Haney, Mark 2; Affiliation: 1: Wright State University, Dayton, Ohio 45435 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Apr2006, Vol. 44 Issue 4, p794; Subject Term: THERMAL stresses; Subject Term: SPACE vehicles; Subject Term: TOPOLOGY; Subject Term: THERMOELASTICITY; Subject Term: AERONAUTICS -- United States; Subject Term: TEMPERATURE; Subject Term: AIRCRAFT industry; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 441220 Motorcycle, boat and other motor vehicle dealers; NAICS/Industry Codes: 441228 Motorcycle, ATV, and All Other Motor Vehicle Dealers; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 9p; Illustrations: 9 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24518263&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - O'Connor, James V. AU - Haan, James M. AU - Wright, Joshua L. T1 - Spent Bullet in the Bronchus. JO - American Surgeon JF - American Surgeon Y1 - 2006/04// VL - 72 IS - 4 M3 - Article SP - 345 EP - 346 SN - 00031348 AB - Penetrating tracheal trauma, although infrequent, varies from minor to life-threatening injuries. Serious injury often results from airway compromise or significant associated esophageal or vascular trauma. Tracheal injuries resulting in a retained ballistic fragment in the airway have been infrequently reported. We report the successful treatment of a patient with a gunshot wound to the anterior cervical trachea resulting in a spent bullet lodged in the left lower lobe bronchus. [ABSTRACT FROM AUTHOR] AB - Copyright of American Surgeon is the property of Southeastern Surgical Congress and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GUNSHOT wounds KW - TRACHEA -- Diseases KW - WOUNDS & injuries KW - AIRWAY (Medicine) KW - BRONCHI N1 - Accession Number: 20545478; O'Connor, James V. 1 Haan, James M. 1 Wright, Joshua L. 2; Affiliation: 1: Associate Professor of Surgery, University of Maryland School of Medicine, Director, Thoracic and Vascular Trauma, R. Adams Cowley Shock Trauma Center, Baltimore, Maryland 2: Captain, United States Air Force, Staff Physician, Emergency Services; Source Info: Apr2006, Vol. 72 Issue 4, p345; Subject Term: GUNSHOT wounds; Subject Term: TRACHEA -- Diseases; Subject Term: WOUNDS & injuries; Subject Term: AIRWAY (Medicine); Subject Term: BRONCHI; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20545478&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Machalek, Richard AU - Katayama, Andrew D. AU - Patrey, James E. AU - Born, Dana H. T1 - Suspending Routine Duty. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 2006/04// VL - 32 IS - 3 M3 - Article SP - 389 EP - 404 SN - 0095327X AB - Recently, the sociologist Amitai Etzioni developed a theory of the significance of holidays as "seedbeds of virtue" and agents of socialization. With minor modifications. Etzioni's theory can shed light on the sociological significance of holiday celebrations and ceremonies in military organizations. This article focuses on two key aspects of military holidays that distinguish them from their civilian counterparts: ( II the centrality of the normative notion of "duty" in military culture and (2) the unique temporal constraints to which military holiday celebrations are subjected. Consistent with Etzioni's claim that holidays function, in part, as agents of socialization, the authors examine holiday celebrations and ceremonies at a major organizational site of military socialization, the United States Air Force Academy. The authors explain how unique properties of military organizations and cultures shape the nature and sociological functions of holiday celebrations and ceremonies in the armed forces. [ABSTRACT FROM AUTHOR] AB - Copyright of Armed Forces & Society (0095327X) is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY sociology KW - MILITARY art & science KW - HOLIDAYS -- United States KW - SOCIALIZATION KW - UNITED States KW - Air Force KW - military holidays KW - Military Policy and Organizations KW - military rituals KW - military socialization KW - UNITED States Air Force Academy KW - ETZIONI, Amitai, 1929- N1 - Accession Number: 24671787; Machalek, Richard 1; Email Address: machalek@uwyo.edu Katayama, Andrew D. 2; Email Address: Andrew.Katayama@USAFA.af.mil Patrey, James E. 3; Email Address: James.Patrey@navy.mil Born, Dana H. 2; Email Address: Dana.Born@USAFA.af.mil; Affiliation: 1: University of Wyoming 2: United States Air Force Academy 3: Naval Air Systems Command; Source Info: Apr2006, Vol. 32 Issue 3, p389; Subject Term: MILITARY sociology; Subject Term: MILITARY art & science; Subject Term: HOLIDAYS -- United States; Subject Term: SOCIALIZATION; Subject Term: UNITED States; Author-Supplied Keyword: Air Force; Author-Supplied Keyword: military holidays; Author-Supplied Keyword: Military Policy and Organizations; Author-Supplied Keyword: military rituals; Author-Supplied Keyword: military socialization; Company/Entity: UNITED States Air Force Academy; People: ETZIONI, Amitai, 1929-; Number of Pages: 16p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=24671787&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jauchem, J. R. T1 - The role of autacoids and the autonomic nervous system in cardiovascular responses to radio-frequency energy heating. JO - Autonomic & Autacoid Pharmacology JF - Autonomic & Autacoid Pharmacology Y1 - 2006/04// VL - 26 IS - 2 M3 - Article SP - 121 EP - 140 PB - Wiley-Blackwell SN - 14748665 AB - 1 Among the potential effects of exposure to high levels of radio-frequency energy (RFE) (which includes microwaves), an increase in body temperature is the primary consequence. Release of autacoids and activity of the autonomic nervous system may influence (or be directly responsible for) some of the physiological changes that occur in conjunction with this hyperthermia. 2 The main focus of this review is the interaction of autacoids and the autonomic nervous system with cardiovascular changes during heating. Differences between environmental and RFE-induced heating (such as rate of temperature change and degree of skin vs. core heating) may be important when considering these effects. 3 Antihistamines exhibited no beneficial effect on circulatory collapse during RFE-induced heating. The serotonergic blocker methysergide decreased survival time in rats during terminal RFE exposure, despite no effects on heart rate (HR) or blood pressure. Although blockade of platelet-activating factor resulted in lower HR before RFE exposure, there was a lack of effect on the subsequent increase in HR during heating. Nitric oxide did not contribute to the hypotension that occurs due to rapid heating by RFE exposure. There have been either no or very limited studies of effects of prostaglandins, bradykinin, or angiotensin on RFE-induced heating responses. 4 β-Adrenoceptor antagonism with propranolol resulted in significantly decreased survival times and lower final colonic temperatures during RFE exposure. A lack of effects of nadolol on survival time and temperature, coupled with its poor ability to traverse the blood–brain barrier, suggests that central β-adrenergic stimulation rather than peripheral stimulation may alter thermoregulation. 5 Effects of the autonomic nervous system (as studied by adrenoceptor blockade) on potassium changes during heating have not been fully investigated. Such changes could be important in animals’ responses to RFE and other modalities of heating, and should be studied in future. [ABSTRACT FROM AUTHOR] AB - Copyright of Autonomic & Autacoid Pharmacology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO frequency KW - MICROWAVES KW - BODY temperature KW - FEVER KW - ANTIHISTAMINES KW - DRUGS -- Physiological effect KW - CARDIOVASCULAR system KW - α-adrenoceptor KW - β-adrenoceptor KW - α-adrenoceptor KW - β-adrenoceptor KW - cardiovascular responses KW - heating KW - histamine KW - hyperthermia KW - microwave KW - nitric oxide KW - radio-frequency N1 - Accession Number: 20602964; Jauchem, J. R. 1; Affiliation: 1: Air Force Research Laboratory, Directed Energy Bio-Effects Division, Radio-Frequency Radiation Branch, Brooks City-Base, TX 78235-5147, USA; Source Info: Apr2006, Vol. 26 Issue 2, p121; Subject Term: RADIO frequency; Subject Term: MICROWAVES; Subject Term: BODY temperature; Subject Term: FEVER; Subject Term: ANTIHISTAMINES; Subject Term: DRUGS -- Physiological effect; Subject Term: CARDIOVASCULAR system; Author-Supplied Keyword: α-adrenoceptor; Author-Supplied Keyword: β-adrenoceptor; Author-Supplied Keyword: α-adrenoceptor; Author-Supplied Keyword: β-adrenoceptor; Author-Supplied Keyword: cardiovascular responses; Author-Supplied Keyword: heating; Author-Supplied Keyword: histamine; Author-Supplied Keyword: hyperthermia; Author-Supplied Keyword: microwave; Author-Supplied Keyword: nitric oxide; Author-Supplied Keyword: radio-frequency; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; Number of Pages: 20p; Illustrations: 2 Charts, 1 Graph; Document Type: Article L3 - 10.1111/j.1474-8673.2006.00362.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20602964&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shouyin Zhang AU - Wurden, Glen A. AU - Intrator, Thomas P. AU - Ruden, Edward L. AU - Waganaar, William J. AU - Grabowski, Chris T. AU - Renneke, Richard M. AU - Degnan, James H. T1 - High-Density Field-Reversed Configuration Plasma for Magnetized Target Fusion. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2006/04//Apr2006 Part 1 VL - 34 IS - 2 M3 - Article SP - 223 EP - 228 SN - 00933813 AB - Field reversed theta pinch technology is employed with programmed cusp fields at the theta coil ends to form high-density field-reversed configuration (FRC) plasmas. The well-formed FRC plasmas have volume-averaged density of 2 – 4 × 1022 m-3, total temperature (Te + Ti) of 300–500 eV, and plasma lifetime between 10–20 μs in 50–70 mtorr of deuterium static gas fill. The achieved FRC parameters are very close to the desired target plasma requirements for magnetized target fusion. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH-density plasmas KW - DOMAIN structure KW - CONTROLLED fusion KW - PLASMA confinement KW - PARAMETER estimation KW - DEUTERIUM KW - MATTER -- Properties KW - Field-reversed configuration KW - fusion reactors KW - magnetized target fusion KW - plasma confinement KW - plasma generation KW - plasma measurements KW - plasma pinch KW - plasmas N1 - Accession Number: 20790093; Shouyin Zhang 1,2; Email Address: szhang9@wisc.edu Wurden, Glen A. 3 Intrator, Thomas P. 3 Ruden, Edward L. 4 Waganaar, William J. 3 Grabowski, Chris T. 5 Renneke, Richard M. 3 Degnan, James H. 4; Affiliation: 1: Los Alamos National Laboratory, Los Alamos, NM 87545 USA 2: Department of Physics, University of Wisconsin-Madison, Madison, WI 53706 USA 3: P-24 Plasma Physics Group, Los Alamos National Laboratory, Los Alamos, NM 87545 USA 4: Air Force Research Laboratory, Albuquerque, NM 87117 USA 5: Science Applications International Corporation, Albuquerque, NM 87106 USA; Source Info: Apr2006 Part 1, Vol. 34 Issue 2, p223; Subject Term: HIGH-density plasmas; Subject Term: DOMAIN structure; Subject Term: CONTROLLED fusion; Subject Term: PLASMA confinement; Subject Term: PARAMETER estimation; Subject Term: DEUTERIUM; Subject Term: MATTER -- Properties; Author-Supplied Keyword: Field-reversed configuration; Author-Supplied Keyword: fusion reactors; Author-Supplied Keyword: magnetized target fusion; Author-Supplied Keyword: plasma confinement; Author-Supplied Keyword: plasma generation; Author-Supplied Keyword: plasma measurements; Author-Supplied Keyword: plasma pinch; Author-Supplied Keyword: plasmas; Number of Pages: 6p; Illustrations: 6 Black and White Photographs, 2 Diagrams; Document Type: Article L3 - 10.1109/TPS.2006.872164 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20790093&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vidulich, Michael A. AU - Nelson, W. Todd AU - Bolia, Robert S. T1 - Speech-Based Controls in Simulated Air Battle Management. JO - International Journal of Aviation Psychology JF - International Journal of Aviation Psychology Y1 - 2006/04// VL - 16 IS - 2 M3 - Article SP - 197 EP - 213 PB - Taylor & Francis Ltd SN - 10508414 AB - This experiment evaluated speech-based controls as an aid for Airborne Warning and Control System (AWACS) operators performing simulated Battle Management Command and Control tasks. Twelve AWACS operators were required to track a package of fighter aircraft, receive verbal target changes, and pass the verbal changes to the lead fighter aircraft in a simulated battlefield air interdiction environment. The availability of speech controls for selected human-machine interface manipulation tasks was varied. The participants' mission performance, mental workload, opinions, and real-time control modality preferences were recorded. The results strongly supported the application of speech-based controls in the AWACS interface. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aviation Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRBORNE warning & control systems KW - FIGHTER planes KW - MILITARY airplanes -- Armament KW - AIR interdiction KW - TASK performance KW - ELECTRONIC systems N1 - Accession Number: 20561495; Vidulich, Michael A. 1; Email Address: michael.vidulich@wpafb.af.mil Nelson, W. Todd 1 Bolia, Robert S. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio; Source Info: 2006, Vol. 16 Issue 2, p197; Subject Term: AIRBORNE warning & control systems; Subject Term: FIGHTER planes; Subject Term: MILITARY airplanes -- Armament; Subject Term: AIR interdiction; Subject Term: TASK performance; Subject Term: ELECTRONIC systems; Number of Pages: 17p; Illustrations: 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1207/s15327108ijap1602_5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20561495&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davidson, Sean A. AU - Gilkey, Robert H. AU - Colburn, H. Steven AU - Carney, Laurel H. T1 - Binaural detection with narrowband and wideband reproducible noise maskers. III. Monaural and diotic detection and model results. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2006/04// VL - 119 IS - 4 M3 - Article SP - 2258 EP - 2275 SN - 00014966 AB - A single-interval, yes-no, tone-in-noise detection experiment was conducted to measure the proportion of “tone present” responses to each of 25 reproducible noise-alone and tone-plus-noise waveforms under narrowband (100 Hz), wideband (2900 Hz), monotic, and diotic stimulus conditions. Proportions of “tone present” responses (estimates of the probabilities of hits and false alarms) were correlated across masker bandwidths and across monotic and diotic conditions. Two categories of models were considered; one based on stimulus energy or neural counts, and another based on temporal structure of the stimulus envelope or neural patterns. Both categories gave significant correlation between decision variables and data. A model based on a weighted combination of energy in multiple critical bands performed best, predicting up to 90% of the variance in the reproducible-noise data. However, since energy-based models are unable to successfully explain detection under a roving-level paradigm without substantial modification, it is argued that other variations of detection models must be considered for future study. Temporal models are resistant to changes in threshold under roving-level conditions, but explained at most only 67% of the variance in the reproducible-noise data. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NOISE KW - BANDWIDTHS KW - BROADBAND communication systems KW - DATA transmission systems KW - SPECTRUM allocation N1 - Accession Number: 20296268; Davidson, Sean A. 1 Gilkey, Robert H. 2,3 Colburn, H. Steven 4 Carney, Laurel H. 5; Affiliation: 1: Department of Biomedical and Chemical Engineering, Institute for Sensory Research, 621 Skytop Road, Syracuse University, Syracuse, New York 13244 2: Department of Psychology, Wright State University, Dayton, Ohio, 45435 3: Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 4: Boston University Hearing Research Center, Department of Biomedical Engineering, Boston University, 44 Cummington Street, Boston, Massachusetts 02215 5: Department of Biomedical and Chemical Engineering, Department of Electrical Engineering and Computer Science, and The Institute for Sensory Research, 621 Skytop Road, Syracuse University, Syracuse, New York 13244; Source Info: Apr2006, Vol. 119 Issue 4, p2258; Subject Term: NOISE; Subject Term: BANDWIDTHS; Subject Term: BROADBAND communication systems; Subject Term: DATA transmission systems; Subject Term: SPECTRUM allocation; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; Number of Pages: 18p; Illustrations: 1 Diagram, 6 Charts, 4 Graphs; Document Type: Article L3 - 10.1121/1.2177583 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20296268&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brungart, Douglas S. AU - Iyer, Nandini AU - Simpson, Brian D. T1 - Monaural speech segregation using synthetic speech signals. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2006/04// VL - 119 IS - 4 M3 - Article SP - 2327 EP - 2333 SN - 00014966 AB - When listening to natural speech, listeners are fairly adept at using cues such as pitch, vocal tract length, prosody, and level differences to extract a target speech signal from an interfering speech masker. However, little is known about the cues that listeners might use to segregate synthetic speech signals that retain the intelligibility characteristics of speech but lack many of the features that listeners normally use to segregate competing talkers. In this experiment, intelligibility was measured in a diotic listening task that required the segregation of two simultaneously presented synthetic sentences. Three types of synthetic signals were created: (1) sine-wave speech (SWS); (2) modulated noise-band speech (MNB); and (3) modulated sine-band speech (MSB). The listeners performed worse for all three types of synthetic signals than they did with natural speech signals, particularly at low signal-to-noise ratio (SNR) values. Of the three synthetic signals, the results indicate that SWS signals preserve more of the voice characteristics used for speech segregation than MNB and MSB signals. These findings have implications for cochlear implant users, who rely on signals very similar to MNB speech and thus are likely to have difficulty understanding speech in cocktail-party listening environments. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPEECH KW - COCHLEAR implants KW - LANGUAGE & languages KW - HEARING KW - SPEECH perception N1 - Accession Number: 20296296; Brungart, Douglas S. 1 Iyer, Nandini 1; Email Address: nandini.iyer@wpafb.af.mil Simpson, Brian D. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7901; Source Info: Apr2006, Vol. 119 Issue 4, p2327; Subject Term: SPEECH; Subject Term: COCHLEAR implants; Subject Term: LANGUAGE & languages; Subject Term: HEARING; Subject Term: SPEECH perception; Number of Pages: 7p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1121/1.2170030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20296296&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parthasarathy, Triplicane A. AU - Cinibulk, Michael K. AU - Zawada, Larry P. T1 - Combined Effect of Salt Water and High-Temperature Exposure on the Strength Retention of Nextel™720 Fibers and Nextel™720-Aluminosilicate Composites. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2006/04// VL - 89 IS - 4 M3 - Article SP - 1373 EP - 1379 PB - Wiley-Blackwell SN - 00027820 AB - The relative contribution of fiber strength loss to reported degradation in the mechanical behavior of Nextel™720-aluminosilicate composites after exposure to salt fog (ASTM B117) was explored. Single filament tension tests were performed on Nextel™720 (3M, Inc., Minneapolis, MN) fibers after immersion in NaCl solutions followed by high-temperature exposure in air. The results were compared with the behavior of control specimens which received high-temperature exposure but were not immersed in NaCl solution. There was no degradation in fiber strengths for NaCl solutions below 1 wt%. However, significant degradation was observed at 5 wt% NaCl upon exposure to temperatures between 900° and 1150°C, while no degradation was observed upon an exposure to 1200°C. The relative contribution of fiber strength loss to composite degradation was estimated as nearly 50%, indicating that both fibers and matrix/interface degrade from exposure to salt water. X-ray diffraction and transmission electron microscopy of the exposed fibers and composites were conducted to help rationalize the observations. Microstructure of degraded fibers showed presence of Na at grain boundaries near the surface, without any evidence of a crystalline phase, indicating weakening from segregation or formation of an amorphous phase. The degraded composites showed that matrix and fiber/matrix interfaces had Na rich regions/phases. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM silicates KW - FIBER-reinforced ceramics KW - ELECTRON microscopy KW - SALINE waters KW - CRYSTAL grain boundaries N1 - Accession Number: 20238350; Parthasarathy, Triplicane A. 1; Email Address: Triplicane.Parthasarathy@wpafb.af.mil Cinibulk, Michael K. 1 Zawada, Larry P. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLN, Wright-Patterson AFB, Ohio 45433-7817; Source Info: Apr2006, Vol. 89 Issue 4, p1373; Subject Term: ALUMINUM silicates; Subject Term: FIBER-reinforced ceramics; Subject Term: ELECTRON microscopy; Subject Term: SALINE waters; Subject Term: CRYSTAL grain boundaries; Number of Pages: 7p; Illustrations: 1 Chart, 1 Graph; Document Type: Article L3 - 10.1111/j.1551-2916.2005.00906.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20238350&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, S. I. AU - Parthasarathy, T. A. AU - Dimiduk, D. M. AU - Hazzledine, P. M. T1 - Discrete dislocation simulations of precipitation hardening in inverse superalloys. JO - Philosophical Magazine Letters JF - Philosophical Magazine Letters Y1 - 2006/04// VL - 86 IS - 4 M3 - Article SP - 215 EP - 225 PB - Taylor & Francis Ltd SN - 09500839 AB - The low-temperature yield stress of a γ′ (Ni 3 Al) matrix–γ (Ni) precipitate ‘inverse’ superalloy, containing 40% Ni precipitates (γ), is calculated by discrete-dislocation simulations. Two different precipitate sizes and two anti-phase boundary energies are considered. The results of these simulations are compared with corresponding results from γ–γ′ superalloys (S. Rao, T.A. Parthasarathy, D. Dimiduk, et al. , Phil. Mag. 84 3195 (2004)). In general, the results show that precipitation hardening in inverse superalloys is weaker than for regular superalloys. Similar to studies of superalloys, many of these results can be rationalized from the results of simulations on simple homogenized precipitate structures. The Hirsch, Kelly and Ardell precipitation-strengthening model (Metall. Trans. A 16 2131 (1985); Phil. Mag. 12 881 (1965); Trans. Jpn. Inst. Metals 9 1403 (1968).), developed for low-stacking-fault-energy spherical precipitates in a high-stacking-fault-energy matrix, adapted for inverse superalloys, shows qualitative agreement with the simulation results for spherical γ precipitates. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Magazine Letters is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOW temperatures KW - STRAINS & stresses (Mechanics) KW - HEAT resistant alloys KW - PRECIPITATION hardening KW - METALS -- Hardenability N1 - Accession Number: 20790494; Rao, S. I. 1; Email Address: Satish.Rao@wpafb.af.mil Parthasarathy, T. A. 1 Dimiduk, D. M. 2 Hazzledine, P. M. 1; Affiliation: 1: UES Inc., 4401 Dayton-Xenia Rd., Dayton, OH 45432, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright–Patterson AFB, OH 45433, USA; Source Info: Apr2006, Vol. 86 Issue 4, p215; Subject Term: LOW temperatures; Subject Term: STRAINS & stresses (Mechanics); Subject Term: HEAT resistant alloys; Subject Term: PRECIPITATION hardening; Subject Term: METALS -- Hardenability; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 11p; Illustrations: 10 Color Photographs; Document Type: Article L3 - 10.1080/09500830600618215 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20790494&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, Martin L. T1 - Just War Revisited. JO - Political Theology JF - Political Theology Y1 - 2006/04// VL - 7 IS - 2 M3 - Book Review SP - 243 EP - 245 PB - Taylor & Francis Ltd SN - 1462317X AB - The article reviews the book "Just War Revisited," by Oliver O'Donovan. KW - JUST war doctrine KW - NONFICTION KW - O'DONOVAN, Oliver KW - JUST War Revisited, The (Book) N1 - Accession Number: 22772592; Cook, Martin L. 1; Email Address: martin.cook@usafa.af.mil; Affiliation: 1: US Air Force Academy; Source Info: Apr2006, Vol. 7 Issue 2, p243; Subject Term: JUST war doctrine; Subject Term: NONFICTION; Reviews & Products: JUST War Revisited, The (Book); People: O'DONOVAN, Oliver; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22772592&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - DeLeon, Patrick H. AU - Loftis, Christopher W. AU - Ball, Vicki AU - Sullivan, Michael J. T1 - Navigating Politics, Policy, and Procedure: A Firsthand Perspective of Advocacy on Behalf of the Profession. JO - Professional Psychology: Research & Practice JF - Professional Psychology: Research & Practice Y1 - 2006/04// VL - 37 IS - 2 M3 - Article SP - 146 EP - 153 SN - 07357028 AB - Psychology's expertise as a behavioral science is essential to effectively address society's most pressing concerns. Advocacy for clients and the public good-and in turn, for the profession of psychology-occurs on multiple levels through active participation in local and federal legislatures, agencies, foundations, and nonprofit organizations that influence implementation of regulations and policies. The authors offer a number of observations and recommendations from their cumulative past experience to argue that presence, persistence, and long-term vision are absolutely essential for the ultimate success and advancement of professional psychology. [ABSTRACT FROM AUTHOR] AB - Copyright of Professional Psychology: Research & Practice is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PSYCHOLOGY KW - PERSUASION (Psychology) KW - POLITICAL science KW - GOVERNMENT policy KW - LEGISLATIVE bodies KW - PUBLIC sector KW - NONPROFIT organizations KW - CHARITABLE uses, trusts, & foundations (Law) KW - advocacy KW - government KW - political process KW - professional psychology KW - public policy N1 - Accession Number: 20984205; DeLeon, Patrick H. 1 Loftis, Christopher W. 2; Email Address: cloftis@phhp.ufl.edu Ball, Vicki 3 Sullivan, Michael J. 4; Affiliation: 1: Former American Psychological Association President 2: National Health Policy Forum 3: United States Air Force 4: American Psychological Association; Source Info: Apr2006, Vol. 37 Issue 2, p146; Subject Term: PSYCHOLOGY; Subject Term: PERSUASION (Psychology); Subject Term: POLITICAL science; Subject Term: GOVERNMENT policy; Subject Term: LEGISLATIVE bodies; Subject Term: PUBLIC sector; Subject Term: NONPROFIT organizations; Subject Term: CHARITABLE uses, trusts, & foundations (Law); Author-Supplied Keyword: advocacy; Author-Supplied Keyword: government; Author-Supplied Keyword: political process; Author-Supplied Keyword: professional psychology; Author-Supplied Keyword: public policy; NAICS/Industry Codes: 813211 Grantmaking Foundations; NAICS/Industry Codes: 813319 Other Social Advocacy Organizations; NAICS/Industry Codes: 921120 Legislative Bodies; Number of Pages: 8p; Document Type: Article L3 - 10.1037/0735-7028.37.2.146 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20984205&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alfano, Angelo J. AU - Mills, Jeffrey D. AU - Vaghjiani, Ghanshyam L. T1 - Highly accurate ignition delay apparatus for hypergolic fuel research. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2006/04// VL - 77 IS - 4 M3 - Article SP - 045109 PB - American Institute of Physics SN - 00346748 AB - The efficient development of hypergolic fuels requires an interdisciplinary approach involving ab initio modeling, synthesis, and experimental physical chemistry. Candidate molecules must exhibit hypergolic ignition delay times that are fast enough to warrant further testing for safety and performance criteria. Hypergolic ignition delay apparatus has been mentioned in the open literature for six decades, but accurate, detailed, modern ignition delay hardware that uses inexpensive laboratory building blocks and a minimum of custom circuitry is still needed. This article details line-of-sight electro-optical circuitry with direct digital readout and additional oscilloscope recording that can be used to measure total ignition and chemical delay times for screening candidate fuels. We also illustrate the value of high speed video and quantum chemical calculations to supplement the ignition delay measurements for a comprehensive approach to hypergolic fuel research. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESEARCH KW - PHYSICAL & theoretical chemistry KW - OSCILLOSCOPES KW - OPTICS KW - BLOCKS (Building materials) KW - CHEMISTRY N1 - Accession Number: 20736158; Alfano, Angelo J. 1,2 Mills, Jeffrey D. 3 Vaghjiani, Ghanshyam L. 3; Email Address: ghanshyam.vaghjiani@edwards.af.mil; Affiliation: 1: ERC, Inc., AFRL/PRSP, 10 E. Saturn Boulevard, Edwards AFB, California 93524 2: Northrop Grumman Space Technology, One Space Park-6/2188, Redondo Beach, CA 90278 3: Propellant Branch, Space and Missile Propulsion Division, Propulsion Directorate, Air Force Research Laboratory, AFRL/PRSP, 10 E. Saturn Boulevard, Edwards AFB, California 93524; Source Info: Apr2006, Vol. 77 Issue 4, p045109; Subject Term: RESEARCH; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: OSCILLOSCOPES; Subject Term: OPTICS; Subject Term: BLOCKS (Building materials); Subject Term: CHEMISTRY; NAICS/Industry Codes: 444190 Other Building Material Dealers; NAICS/Industry Codes: 334515 Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals; Number of Pages: 5p; Illustrations: 1 Color Photograph, 4 Diagrams, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.2188909 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20736158&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Billock, Vincent A. AU - Ditzinger, Thomas AU - Kelso, J. A. Scott AU - Tsou, Brian H. T1 - Fechner-Benham subjective colors do not induce McCollough after-effects. JO - Spatial Vision JF - Spatial Vision Y1 - 2006/04// VL - 19 IS - 2-4 M3 - Article SP - 161 EP - 172 PB - VSP International Science Publishers SN - 01691015 AB - Fechner-Benham subjective color is widely believed to be governed by local interactions in early (probably retinal) mechanisms. Here we report three lines of phenomenological evidence that suggest otherwise: subjective colors seen in spatially extended stimuli (a) are dependent on global aspects of the stimuli; (b) can become multistable in position; and (c) even after being stabilized do not support the creation of McCollough's colored after-effects — a cortically based phenomenon generally thought to be more central than Fechner-Benham color. These phenomena suggest a central locus that controls perception of subjective color, characterized by pattern dependent interactions among cortical mechanisms that draw their inputs from peripheral units. [ABSTRACT FROM AUTHOR] AB - Copyright of Spatial Vision is the property of VSP International Science Publishers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLOR vision KW - VISUAL perception KW - VISION KW - PERCEPTION KW - COLOR KW - FECHNER-BENHAM SUBJECTIVE COLOR KW - McCollough effect KW - multistability N1 - Accession Number: 20633020; Billock, Vincent A. 1; Email Address: Vince.Billock@wpafb.af.mil Ditzinger, Thomas 2,3 Kelso, J. A. Scott 2 Tsou, Brian H. 4; Affiliation: 1: General Dynamics, Inc., Suite 200, 5200 Springfield Pike, Dayton, OH 45431, USA 2: Center for Complex Systems, Florida Atlantic University, 777 Glades Road, Boca Raton, FL 33431, USA 3: Springer-Verlag, Tiergartenstr. 17, 69121 Heidelberg, Germany 4: US Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA; Source Info: Apr2006, Vol. 19 Issue 2-4, p161; Subject Term: COLOR vision; Subject Term: VISUAL perception; Subject Term: VISION; Subject Term: PERCEPTION; Subject Term: COLOR; Author-Supplied Keyword: FECHNER-BENHAM SUBJECTIVE COLOR; Author-Supplied Keyword: McCollough effect; Author-Supplied Keyword: multistability; Number of Pages: 12p; Document Type: Article L3 - 10.1163/156856806776923443 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20633020&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barnes, P. N. AU - Harrison, B. C. AU - Kell, J. W. AU - Levin, G. A. AU - Sumption, M. D. T1 - Improving YBCO Coated Conductors for Applications. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/03/31/ VL - 824 IS - 1 M3 - Article SP - 425 EP - 432 PB - American Institute of Physics SN - 0094243X AB - Superconducting power devices made of high temperature superconductors (HTS) can enable megawatt-class power systems which are lighter in weight and smaller in size than their conventional counterparts. The YBCO coated conductor is expected to be the premiere HTS conductor in making these systems. With advances in YBCO deposition techniques and the establishment of reel-to-reel processing, new research should address enhancement of the YBCO coated conductor’s performance. These improvements in the YBCO conductor must include maintaining high critical current densities in fields of a few tesla and minimizing ac losses. This paper first discusses a current sharing scheme in the multifilamentary YBCO conductor to circumvent filamentary breakage. Also, a method for providing magnetic flux pinning to increase the current capacity of the YBCO conductor is outlined using minute additions of rare earth dopants. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTORS KW - HIGH temperature superconductors KW - ELECTRIC currents KW - SUPERCONDUCTIVITY KW - MAGNETIC fields KW - MAGNETIC flux KW - AC Loss KW - Flux Pinning KW - Superconducting Machines KW - YBCO Conductor N1 - Accession Number: 20559915; Barnes, P. N. 1 Harrison, B. C. 1 Kell, J. W. 1 Levin, G. A. 1 Sumption, M. D. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 2: LASM, Ohio State University, Columbus, OH 43210, USA; Source Info: 2006, Vol. 824 Issue 1, p425; Subject Term: SUPERCONDUCTORS; Subject Term: HIGH temperature superconductors; Subject Term: ELECTRIC currents; Subject Term: SUPERCONDUCTIVITY; Subject Term: MAGNETIC fields; Subject Term: MAGNETIC flux; Author-Supplied Keyword: AC Loss; Author-Supplied Keyword: Flux Pinning; Author-Supplied Keyword: Superconducting Machines; Author-Supplied Keyword: YBCO Conductor; Number of Pages: 8p; Illustrations: 2 Diagrams, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.2192378 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20559915&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Levin, G. A. AU - Barnes, P. N. T1 - The Integration of YBACU3O6+X Coated Conductors into Magnets and Rotating Machinery. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/03/31/ VL - 824 IS - 1 M3 - Article SP - 433 EP - 439 PB - American Institute of Physics SN - 0094243X AB - The implementation of the 2nd generation high-Tc superconductors in power applications, such as electrical transformers, motors and generators requires superconducting wires that are superior to copper Litz wires at cryogenic temperatures in terms of losses in time-varying magnetic fields, as well as in engineering current density. Another problem is to find a way to make practical coils and armatures out of flat tape-like conductors with low bending strain tolerance. We discuss several novel approaches to the construction of coils and armatures based specifically on the properties of coated conductors manufactured today. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTORS KW - MAGNETS KW - ELECTRIC generators KW - ELECTRIC machinery -- Rotors KW - ELECTRIC motors KW - MAGNETIC fields KW - Coated conductors KW - magnets KW - rotating machinery N1 - Accession Number: 20559914; Levin, G. A. 1 Barnes, P. N. 1; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, 1950 Fifth St. Bldg. 450, Wright-Patterson, Air Force Base OH 45433; Source Info: 2006, Vol. 824 Issue 1, p433; Subject Term: SUPERCONDUCTORS; Subject Term: MAGNETS; Subject Term: ELECTRIC generators; Subject Term: ELECTRIC machinery -- Rotors; Subject Term: ELECTRIC motors; Subject Term: MAGNETIC fields; Author-Supplied Keyword: Coated conductors; Author-Supplied Keyword: magnets; Author-Supplied Keyword: rotating machinery; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; Number of Pages: 7p; Illustrations: 6 Black and White Photographs; Document Type: Article L3 - 10.1063/1.2192379 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20559914&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varanasi, Chakrapani V. AU - Chuck, Leon AU - Chaney, Andrew D. AU - Barnes, Paul N. T1 - A Simple Test Method to Compare the Tensile Strengths of Metallic Substrates Used in YBa2Cu3O7-x Coated Conductors. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/03/31/ VL - 824 IS - 1 M3 - Article SP - 758 EP - 762 PB - American Institute of Physics SN - 0094243X AB - A simple method is developed and used to compare the tensile strengths of metallic substrates used in the YBa2Cu3O7-x (YBCO) coated conductor technology. This method is developed based on the ASTM D3379 tensile test standard method that is recommended for single filament materials. Two different biaxially textured samples, pure Cu and Cu-Fe alloy, are tested by this new method and the tensile strengths are compared. The copper samples showed average yield strength of 36 MPa, and the Cu-Fe samples showed average yield strength of 72 MPa—double that of the pure copper. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTING composites KW - METALLIC composites KW - ALLOYS KW - ELECTRIC conductors KW - HIGH temperature superconductors KW - MATERIALS at high temperatures KW - SUPERCONDUCTORS KW - Coated Conductors KW - Metal Alloy KW - Substrates KW - Tensile Strength N1 - Accession Number: 20559873; Varanasi, Chakrapani V. 1 Chuck, Leon 1 Chaney, Andrew D. 2 Barnes, Paul N. 2; Affiliation: 1: University of Dayton Research Institute 300 College Park, Dayton, OH, 45469, USA 2: Air Force Research Laboratory, PRPG 2645 Fifth St., Wright-Patterson AFB, OH, 45433, USA; Source Info: 2006, Vol. 824 Issue 1, p758; Subject Term: SUPERCONDUCTING composites; Subject Term: METALLIC composites; Subject Term: ALLOYS; Subject Term: ELECTRIC conductors; Subject Term: HIGH temperature superconductors; Subject Term: MATERIALS at high temperatures; Subject Term: SUPERCONDUCTORS; Author-Supplied Keyword: Coated Conductors; Author-Supplied Keyword: Metal Alloy; Author-Supplied Keyword: Substrates; Author-Supplied Keyword: Tensile Strength; Number of Pages: 5p; Illustrations: 1 Black and White Photograph, 1 Diagram, 1 Chart; Document Type: Article L3 - 10.1063/1.2192420 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20559873&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harrison, B. C. AU - Fang, H. AU - Carpenter, J. AU - Klenk, P. AU - Varanasi, C. V. AU - Barnes, P. N. T1 - SM and ND Substitutions in YBCO Films Produced through Metal Organic Deposition. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/03/31/ VL - 824 IS - 1 M3 - Article SP - 771 EP - 776 PB - American Institute of Physics SN - 0094243X AB - Epitaxial YBa2Cu3O7-X (YBCO) films were produced on non-buffered (100) single crystal LaAlO3 using the metal organic deposition (MOD) method with fluorinated metal acetates. In an effort to enhance the in-field performance of the films, Sm and Nd acetates were fractionally substituted for Y acetate in a series of precursor solutions to incorporate an array of nanoscale flux pinning centers in the post-annealed films. From measurements taken in the non-optimized films a 50%–150% improvement in critical current density at 77K in fields up to 1T were found for films with a 1/3 substitution of the Rare Earth elements, with further improvements at 40K. Furthermore, a study of the microstructure of the films by scanning electron microscopy (SEM) reveals the presence of nanoparticles on the surfaces of the films. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL organic chemical vapor deposition KW - RARE earth metals KW - RARE earths KW - SAMARIUM KW - NEODYMIUM KW - SUPERCONDUCTIVITY KW - Metal Organic Deposition KW - MOD KW - Nd KW - Rare Earth KW - Sm KW - substitution KW - YBCO N1 - Accession Number: 20559871; Harrison, B. C. 1 Fang, H. 2 Carpenter, J. 1 Klenk, P. 1 Varanasi, C. V. 3 Barnes, P. N. 1; Affiliation: 1: Air Force Research Laboratory, WPAFB, OH, 45433, USA 2: University of Houston, Department of Mechanical Engineering, Houston, TX, 77204, USA 3: University of Dayton Research Institute, 300 College Park, Dayton, OH, 45469, USA; Source Info: 2006, Vol. 824 Issue 1, p771; Subject Term: METAL organic chemical vapor deposition; Subject Term: RARE earth metals; Subject Term: RARE earths; Subject Term: SAMARIUM; Subject Term: NEODYMIUM; Subject Term: SUPERCONDUCTIVITY; Author-Supplied Keyword: Metal Organic Deposition; Author-Supplied Keyword: MOD; Author-Supplied Keyword: Nd; Author-Supplied Keyword: Rare Earth; Author-Supplied Keyword: Sm; Author-Supplied Keyword: substitution; Author-Supplied Keyword: YBCO; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 6p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.2192422 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20559871&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Van Doren, Jane M. AU - Friedman, Jeffery F. AU - Miller, Thomas M. AU - Viggiano, A. A. AU - Denifl, S. AU - Scheier, P. AU - Märk, T. D. AU - Troe, J. T1 - Electron attachment to POCl3: Measurement and theoretical analysis of rate constants and branching ratios as a function of gas pressure and temperature, electron temperature, and electron energy. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2006/03/28/ VL - 124 IS - 12 M3 - Article SP - 124322 PB - American Institute of Physics SN - 00219606 AB - Two experimental techniques, electron swarm and electron beam, have been applied to the problem of electron attachment to POCl3, with results indicating that there is a competition between dissociation of the resonant POCl3-* state and collisional stabilization of the parent anion. In the electron beam experiment at zero electron energy, the fragment ion POCl2- is the dominant ion product of attachment (96%), under single-collision conditions. Small amounts (∼2% each) of POCl3- and Cl- were observed. POCl3- and POCl2- ion products were observed only at zero electron energy, but higher-energy resonances were recorded for POCl-, Cl-, and Cl2- ion products. In the electron swarm experiment, which was carried out in 0.4–7 Torr of He buffer gas, the parent anion branching ratio increased significantly with pressure and decreased with temperature. The electron attachment rate constant at 297 K was measured to be (2.5±0.6)×10-7 cm3 s-1, with ion products POCl2- (71%) and POCl3- (29%) in 1 Torr of He gas. The rate constant decreased as the electron temperature was increased above 1500 K. Theory is developed for (a) the unimolecular dissociation of the nascent POCl3-* and (b) a stepladder collisional stabilization mechanism using the average energy transferred per collision as a parameter. These ideas were then used to model the experimental data. The modeling showed that D0o(Cl–POCl2-) and EA(POCl3) must be the same within ±0.03 eV. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON swarms KW - ELECTRON beams KW - ELECTRON mobility KW - ELECTRON temperature KW - PARTICLES (Nuclear physics) KW - COLLISIONS (Nuclear physics) N1 - Accession Number: 20394238; Van Doren, Jane M. 1 Friedman, Jeffery F. 2 Miller, Thomas M. 3 Viggiano, A. A. 3; Email Address: albert.viggiano@hanscom.af.mil Denifl, S. 4 Scheier, P. 4 Märk, T. D. 4 Troe, J. 5; Affiliation: 1: Department of Chemistry, Holy Cross College, Worcester, Massachusetts 01610-2195 2: Department of Physics, University of Puerto Rico, Mayaguez, Puerto Rico 00681-9016 and Air Force Research Laboratory, Directed Energy Directorate, Kirtland Air Force Base, Albuquerque, New Mexico 87117-5776 3: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Bedford, Massachusetts 01731-3010 4: Institut für Ionenphysik, Leopold-Franzen Universität, Technikerstrasse 25, A-6020 Innsbruck, Austria 5: Institut für Physikalische Chemie der Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany; Source Info: 3/28/2006, Vol. 124 Issue 12, p124322; Subject Term: ELECTRON swarms; Subject Term: ELECTRON beams; Subject Term: ELECTRON mobility; Subject Term: ELECTRON temperature; Subject Term: PARTICLES (Nuclear physics); Subject Term: COLLISIONS (Nuclear physics); Number of Pages: 9p; Illustrations: 2 Charts, 8 Graphs; Document Type: Article L3 - 10.1063/1.2176613 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20394238&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Leiweke, Robert J. AU - Ganguly, Biswa N. T1 - Temperature measurement in a high pressure dielectric barrier discharge using pressure induced line broadening and frequency shift. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/03/27/ VL - 88 IS - 13 M3 - Article SP - 131501 PB - American Institute of Physics SN - 00036951 AB - We have demonstrated two gas temperature measurement methods which are applicable to high pressure discharges where the pressure induced line broadening and frequency shift dominate over thermal broadening of atomic transitions. We have used diode-laser absorption spectroscopic measurements of argon 1s3→2p2 transition Doppler linewidth, Lorentzian broadening, and frequency shift to measure gas temperature in a dielectric barrier discharge operating from 5 up to 500 Torr with temperature rise less than 100 K. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TEMPERATURE measurements KW - DIELECTRICS KW - DIODES KW - ATOMIC transition probabilities KW - SPECTRUM analysis KW - SEMICONDUCTORS N1 - Accession Number: 20735862; Leiweke, Robert J. 1 Ganguly, Biswa N. 1; Email Address: biswa.ganguly@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, WPAFB, Ohio 45433-7919; Source Info: 3/27/2006, Vol. 88 Issue 13, p131501; Subject Term: TEMPERATURE measurements; Subject Term: DIELECTRICS; Subject Term: DIODES; Subject Term: ATOMIC transition probabilities; Subject Term: SPECTRUM analysis; Subject Term: SEMICONDUCTORS; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.2190453 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20735862&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Midey, A. J. AU - Fernandez, A. I. AU - Viggiano, A. A. AU - Zhang, P. AU - Morokuma, K. T1 - Ion chemistry of NOO+. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2006/03/21/ VL - 124 IS - 11 M3 - Article SP - 114313 PB - American Institute of Physics SN - 00219606 AB - The kinetics for the reactions of NOO+ ions with neutral molecules having ionization potentials (IPs) from 9.27 to 15.58 eV was measured in a selected ion flow tube at 298 K. The NOO+ ions are produced from the reaction of N3++O2 and have been reacted with the following: NO, C6F6, CS2, CF3I, C3F6, OCS, C2H6, Xe, SO2, O3, N2O, CO2, Kr, CO, D2, and N2. Numerous types of reactions were observed with the various neutral reagents, including production of NO+ (which may involve loss of an O from the ion or addition of O to the neutral reactant, although the two channels could not be distinguished here), charge transfer, isomerization of NOO+ to ONO+, and hydride abstraction. High level theoretical calculations of the structures and energetics of the various isomers, electronic states, and transition states of NOO and NOO+ were performed to better understand the observed reactivity. All neutral species with an IP<=11.18 eV were observed to react with NOO+ in part by charge transfer. Detailed calculations showed that the recommended adiabatic and vertical IPs of NOO are 10.4 and 11.7 eV, respectively, at the MRCISD(Q)/AVQZ level of theory. The observed experimental limit for charge transfer of 11.18 eV agreed well with the energetics of the final products obtained from theory if dissociation of the neutral metastable product occurred, i.e., the products were X++[O(3P)+NO(2Π)[, where [O(3P)+NO(2Π)[ formed via dissociation of metastable NOO. Charge exchange with neutral reagent X would, therefore, be exothermic if IP(X)<[IPad(NOO)-ΔE(O+NO)–NOO]=∼11.1 eV, where IPad(NOO) is the adiabatic IP. The potential energy surface for the reaction of NOO+ with C2H6 was also calculated, indicating that two pathways for formation of HNO2+C2H5+ exist. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL reactions KW - MOLECULES KW - IONIZATION (Atomic physics) KW - CHEMICAL tests & reagents KW - CHARGE transfer KW - ION exchange (Chemistry) KW - ISOMERIZATION KW - POTENTIAL energy surfaces N1 - Accession Number: 20273651; Midey, A. J. 1; Email Address: anthony.midey@hanscom.af.mil Fernandez, A. I. 1 Viggiano, A. A. 1; Email Address: albert.viggiano@hanscom.af.mil Zhang, P. 2 Morokuma, K. 2; Email Address: albert.viggiano@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts 01731-3010 2: Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322 and Department of Chemistry, Emory University, Atlanta, GA 30322; Source Info: 3/21/2006, Vol. 124 Issue 11, p114313; Subject Term: CHEMICAL reactions; Subject Term: MOLECULES; Subject Term: IONIZATION (Atomic physics); Subject Term: CHEMICAL tests & reagents; Subject Term: CHARGE transfer; Subject Term: ION exchange (Chemistry); Subject Term: ISOMERIZATION; Subject Term: POTENTIAL energy surfaces; Number of Pages: 8p; Illustrations: 2 Diagrams, 3 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.2177257 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20273651&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Subrata AU - Singh, K. P. AU - Gaitonde, Datta V. T1 - Dielectric barrier plasma dynamics for active control of separated flows. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/03/20/ VL - 88 IS - 12 M3 - Article SP - 121501 PB - American Institute of Physics SN - 00036951 AB - The dynamics of separation mitigation with asymmetric dielectric barrier discharges is explored by considering the gas flow past a flat plate at an angle of attack. A self-consistent model utilizing motion of electrons, ions, and neutrals is employed to couple the electric force field to the momentum of the fluid. The charge separation and concomitant electric field yield a time-averaged body force which is oriented predominantly downstream, with a smaller transverse component towards the wall. This induces a wall-jet-like feature that effectively eliminates the separation bubble. The impact of several geometric and electrical operating parameters is elucidated. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRICS KW - GAS flow KW - ELECTRONS KW - IONS KW - ELECTRIC fields KW - FLUID dynamics N1 - Accession Number: 20361756; Roy, Subrata 1; Email Address: sroy@kettering.edu Singh, K. P. 1 Gaitonde, Datta V. 2; Affiliation: 1: Computational Plasma Dynamics Laboratory, Mechanical Engineering, Kettering University, Flint, Michigan 48504 2: Computational Sciences Branch, Air Vehicles Directorate, Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433; Source Info: 3/20/2006, Vol. 88 Issue 12, p121501; Subject Term: DIELECTRICS; Subject Term: GAS flow; Subject Term: ELECTRONS; Subject Term: IONS; Subject Term: ELECTRIC fields; Subject Term: FLUID dynamics; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.2187951 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20361756&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Litton, C. W. AU - Johnstone, D. AU - Akarca-Biyikli, S. AU - Ramaiah, K. S. AU - Bhat, I. AU - Chow, T. P. AU - Kim, J. K. AU - Schubert, E. F. T1 - Effect of C/Si ratio on deep levels in epitaxial 4H–SiC. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/03/20/ VL - 88 IS - 12 M3 - Article SP - 121914 PB - American Institute of Physics SN - 00036951 AB - Changing the ratio of carbon to silicon during the epitaxial 4H–SiC growth is expected to alter the dominant deep level trap, which has been attributed to a native defect. The C/Si ratio was changed from one to six during epitaxial growth of SiC. Diodes fabricated on the epitaxial layer were then characterized using current-voltage and deep level transient spectroscopy. The single peak at 340 K (Z1/Z2 peak), was deconvolved into two traps, closely spaced in energy. The concentration of one of the Z1/Z2 traps decreased with increasing C/Si ratio. This result opposes theoretical predictions of carbon interstitial components, and supports assignment to a silicon antisite or carbon vacancy relationship. The concentration of the second component of the peak at 340 K did not depend on the C/Si ratio, which would indicate an impurity in an interstitial site. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON KW - SILICON KW - SILICON carbide KW - EPITAXY KW - DEEP level transient spectroscopy KW - IMPURITY centers N1 - Accession Number: 20361673; Litton, C. W. 1; Email Address: cole.litton@sbcglobal.net Johnstone, D. 2 Akarca-Biyikli, S. 3 Ramaiah, K. S. 4 Bhat, I. 4 Chow, T. P. 4 Kim, J. K. 4 Schubert, E. F. 4; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/MLPS), Wright–Patterson Air Force Base, Ohio 45433 2: SEMETROL, 13312 Shore Lake Turn, Chesterfield, Virginia 23838 3: Department of Electrical Engineering, Virginia Commonwealth University, Richmond, Virginia 23284 4: Department of Electrical, Computer and System Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180; Source Info: 3/20/2006, Vol. 88 Issue 12, p121914; Subject Term: CARBON; Subject Term: SILICON; Subject Term: SILICON carbide; Subject Term: EPITAXY; Subject Term: DEEP level transient spectroscopy; Subject Term: IMPURITY centers; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 3p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.2161388 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20361673&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smart, D.F. AU - Shea, M.A. AU - Tylka, A.J. AU - Boberg, P.R. T1 - A geomagnetic cutoff rigidity interpolation tool: Accuracy verification and application to space weather JO - Advances in Space Research JF - Advances in Space Research Y1 - 2006/03/15/ VL - 37 IS - 6 M3 - Article SP - 1206 EP - 1217 SN - 02731177 AB - Abstract: We have developed a fast and accurate geomagnetic vertical cutoff rigidity interpolation tool that has general space weather applications. The interpolation tool utilizes vertical cutoff rigidity values determined from 5° by 5° world grids of geomagnetic cutoff rigidities obtained by tracing cosmic ray trajectories through the Tsyganenko magnetospheric field model combined with the International Geomagnetic Reference Field. The world grids for each UT hour were calculated for a 450-km satellite altitude for all magnetic conditions parameterized by the integer magnetic Kp index ranging from very quiet to extremely disturbed. The interpolation tool extrapolates from the grid positions at 450km to any other position or altitude. We demonstrate the accuracy of vertical geomagnetic cutoff values obtained from this interpolation tool by reproducing the orbital radiation dose profile from solar protons recorded during the STS-28 space shuttle mission. We also predict the cutoff latitudes of the 8–15MeV per nucleon α particle flux and compare these values with those determined by the SAMPEX (Solar Anomalous and Magnetospheric Particle Explorer) spacecraft observations for six independent solar particle events under a variety of geomagnetic conditions. In general our predicted cutoff latitudes are within about one degree of the observed cutoff latitudes for low levels of geomagnetic activity. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GEOMAGNETISM KW - SPACE environment KW - COSMIC rays KW - SPACE shuttles KW - Cutoff latitudes KW - Geomagnetic cutoff rigidities KW - Magnetic fields KW - Magnetospheric cutoffs KW - Radiation dose KW - Space radiation N1 - Accession Number: 20918597; Smart, D.F. 1; Email Address: sssrc@msn.com Shea, M.A. 1 Tylka, A.J. 2 Boberg, P.R. 2,3; Affiliation: 1: Emeritus at Air Force Research Laboratory (VSBX), Hanscom AFB, MA 10731, USA 2: E.O. Hulburt Center for Space Research, Naval Research Laboratory, Code 7652, Washington, DC 20375, USA 3: Consultant; Source Info: Mar2006, Vol. 37 Issue 6, p1206; Subject Term: GEOMAGNETISM; Subject Term: SPACE environment; Subject Term: COSMIC rays; Subject Term: SPACE shuttles; Author-Supplied Keyword: Cutoff latitudes; Author-Supplied Keyword: Geomagnetic cutoff rigidities; Author-Supplied Keyword: Magnetic fields; Author-Supplied Keyword: Magnetospheric cutoffs; Author-Supplied Keyword: Radiation dose; Author-Supplied Keyword: Space radiation; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.asr.2006.02.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20918597&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vahala, George AU - Vahala, Linda AU - Yepez, Jeffrey T1 - Quantum lattice representations for vector solitons in external potentials JO - Physica A JF - Physica A Y1 - 2006/03/15/ VL - 362 IS - 1 M3 - Article SP - 215 EP - 221 SN - 03784371 AB - Abstract: A quantum lattice algorithm is developed to examine the effect of an external potential well on exactly integrable vector Manakov solitons. It is found that the exact solutions to the coupled nonlinear Schrodinger equations act like quasi-solitons in weak potentials, leading to mode-locking, trapping and untrapping. Stronger potential wells will lead to the emission of radiation modes from the quasi-soliton initial conditions. If the external potential is applied to that particular mode polarization, then the radiation will be trapped within the potential well. The algorithm developed leads to a finite difference scheme that is unconditionally stable. The Manakov system in an external potential is very closely related to the Gross–Pitaevskii equation for the ground state wave functions of a coupled BEC state at . [Copyright &y& Elsevier] AB - Copyright of Physica A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM theory KW - SOLITONS KW - NUCLEAR physics KW - TRANSPORT theory (Mathematics) KW - Gross–Pitaevskii equation KW - Manakov solitons KW - Nonlinear Schrodinger equation KW - Optical fibers KW - Quantum lattice gas KW - Solitons N1 - Accession Number: 19590773; Vahala, George 1; Email Address: vahala@niv.physics.wm.edu Vahala, Linda 2 Yepez, Jeffrey 3; Affiliation: 1: Department of Physics, William & Mary, Williamsburg, VA 23187, USA 2: Department of Electrical & Computer Engineering, Old Dominion University, Norfolk, VA 23529, USA 3: Air Force Research Laboratory, Hanscom Field, MA 01731, USA; Source Info: Mar2006, Vol. 362 Issue 1, p215; Subject Term: QUANTUM theory; Subject Term: SOLITONS; Subject Term: NUCLEAR physics; Subject Term: TRANSPORT theory (Mathematics); Author-Supplied Keyword: Gross–Pitaevskii equation; Author-Supplied Keyword: Manakov solitons; Author-Supplied Keyword: Nonlinear Schrodinger equation; Author-Supplied Keyword: Optical fibers; Author-Supplied Keyword: Quantum lattice gas; Author-Supplied Keyword: Solitons; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.physa.2005.09.029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19590773&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lane, Steven A. AU - Johnson, Marty AU - Fuller, Chris AU - Charpentier, Arnaud T1 - Active control of payload fairing noise JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2006/03/07/ VL - 290 IS - 3-5 M3 - Article SP - 794 EP - 819 SN - 0022460X AB - Abstract: This work presents adaptive feedforward control using advanced structural–acoustic actuators to reduce the low-frequency acoustic transmission in a sub-scale composite fairing. The actuators, referred to as distributed active vibration absorbers, are multi-resonance devices specifically designed to produce high output forces over a large bandwidth as necessary for payload fairing noise control. Single- and multi-channel control configurations were implemented using external acoustic disturbance levels as high as 130dB. Design parameters such as sample frequency, control filter length, reference source, and causality/delay were examined to determine impact on performance. The active control system reduced the broadband interior noise levels by up to 5dB between 70Hz and 200Hz, and 10dB at specific resonances. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NOISE KW - AUTOMATIC control KW - ACTUATORS KW - DATA transmission systems N1 - Accession Number: 19334840; Lane, Steven A. 1; Email Address: steven.lane@kirtland.af.mil Johnson, Marty 2 Fuller, Chris 2 Charpentier, Arnaud 3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Ave, SE, Kirtland AFB, NM 87117, USA 2: Vibrations and Acoustics Laboratory, Virginia Tech, 131 Durham Hall, Blacksburg, VA 24061-0238, USA 3: ESI/Vibro-Acoustic Sciences Inc., 12555 High Bluff Drive, Suite 250, San Diego, CA 92130, USA; Source Info: Mar2006, Vol. 290 Issue 3-5, p794; Subject Term: NOISE; Subject Term: AUTOMATIC control; Subject Term: ACTUATORS; Subject Term: DATA transmission systems; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 26p; Document Type: Article L3 - 10.1016/j.jsv.2005.04.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19334840&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Knopp, Jeremy AU - Judd, Dave AU - Mandeville, John R. AU - Lindgren, Eric T1 - Spiral Creeping Waves in Ultrasonic Angled-Beam Shear Wave Inspection of Fastener Holes in Multilayer Structures. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/03/06/ VL - 820 IS - 1 M3 - Article SP - 187 EP - 194 PB - American Institute of Physics SN - 0094243X AB - This paper explores the propagation and scattering of spiral creeping waves around a fastener hole. Preliminary experimental data demonstrates the presence of spiral creeping waves in angled beam inspection and the benefit for detecting cracks of varying angular location. Analytical models are used to provide insight into the propagation and focusing of spiral creeping waves around cylindrical holes. A hybrid numerical method is proposed as a measurement model for 3D scattering from holes with cracks. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHEAR waves KW - FASTENERS KW - SURFACES (Technology) -- Defects KW - HOLES KW - PHYSICAL measurements KW - cracks KW - cylindrical holes KW - modeling KW - spiral creeping wave KW - ultrasonics N1 - Accession Number: 20064994; Aldrin, John C. 1 Knopp, Jeremy 2 Judd, Dave 3 Mandeville, John R. 3 Lindgren, Eric 3; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA 2: Air Force Research Laboratory (AFRL/MLLP), Wright-Patterson AFB, OH 45433, USA 3: SAIC Ultra Image Int., New London, CT 06320, USA; Source Info: 2006, Vol. 820 Issue 1, p187; Subject Term: SHEAR waves; Subject Term: FASTENERS; Subject Term: SURFACES (Technology) -- Defects; Subject Term: HOLES; Subject Term: PHYSICAL measurements; Author-Supplied Keyword: cracks; Author-Supplied Keyword: cylindrical holes; Author-Supplied Keyword: modeling; Author-Supplied Keyword: spiral creeping wave; Author-Supplied Keyword: ultrasonics; NAICS/Industry Codes: 423710 Hardware Merchant Wholesalers; NAICS/Industry Codes: 416330 Hardware merchant wholesalers; NAICS/Industry Codes: 339993 Fastener, Button, Needle, and Pin Manufacturing; NAICS/Industry Codes: 339990 All other miscellaneous manufacturing; NAICS/Industry Codes: 332722 Bolt, Nut, Screw, Rivet, and Washer Manufacturing; Number of Pages: 8p; Illustrations: 3 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.2184528 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20064994&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Knopp, J. S. AU - Sabbagh, H. A. AU - Aldrin, J. C. AU - Murphy, R. K. AU - Sabbagh, E. H. AU - Hoffmann, J. AU - Steffes, G. J. T1 - Efficient Solution of Electromagnetic Scattering Problems Using Spatial Decomposition Algorithms. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/03/06/ VL - 820 IS - 1 M3 - Article SP - 299 EP - 306 PB - American Institute of Physics SN - 0094243X AB - This paper introduces spatial decomposition algorithms to the volume integral method, which will enable the integral equation method to efficiently solve electromagnetic scattering problems where the scatterer extends across several layers or multiple scatterers exist in multiple layers. Model comparisons with the finite element methods are used validate the approach. Studies of typical aging aircraft eddy current inspection problems are conducted using the new formulation. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTEGRAL equations KW - ELECTROMAGNETISM KW - SCATTERING (Physics) KW - DECOMPOSITION method (Mathematics) KW - ALGORITHMS KW - FINITE element method N1 - Accession Number: 20064979; Knopp, J. S. 1 Sabbagh, H. A. 2 Aldrin, J. C. 3 Murphy, R. K. 2 Sabbagh, E. H. 2 Hoffmann, J. 4 Steffes, G. J. 1; Affiliation: 1: Air Force Research Laboratory (AFRL/MLLP), Wright-Patterson AFB, OH 45433, USA 2: Victor Technologies, Bloomington, IN 47401, USA 3: Computational Tools, Gurnee, IL 60031, USA 4: S&K Technologies, Dayton, OH 45420, USA; Source Info: 2006, Vol. 820 Issue 1, p299; Subject Term: INTEGRAL equations; Subject Term: ELECTROMAGNETISM; Subject Term: SCATTERING (Physics); Subject Term: DECOMPOSITION method (Mathematics); Subject Term: ALGORITHMS; Subject Term: FINITE element method; Number of Pages: 8p; Illustrations: 6 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.2184543 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20064979&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Knopp, Jeremy S. T1 - Method for Crack Characterization with Noise Invariance for Eddy Current Inspection of Fastener Sites. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/03/06/ VL - 820 IS - 1 M3 - Article SP - 315 EP - 322 PB - American Institute of Physics SN - 0094243X AB - This paper explores feature extraction and signal classification for crack characterization in eddy current inspection of fastener sites. Using simulated studies, a promising feature extraction method with broad noise invariance is presented associated with changes in the eddy current response in the circumferential direction. An experimental study is also presented demonstrating the ability of this measure to improve the capability to detect and potentially size cracks around fasteners while maintaining a low false call rate. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - SURFACES (Technology) -- Defects KW - NOISE KW - FASTENERS KW - SIMULATION methods & models KW - JOINTS (Engineering) KW - cracks KW - eddy current KW - fastener hole inspection KW - modeling KW - noise invariant features N1 - Accession Number: 20064977; Aldrin, John C. 1 Knopp, Jeremy S. 2; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA 2: Air Force Research Laboratory (AFRL/MLLP), Wright-Patterson AFB, OH 45433, USA; Source Info: 2006, Vol. 820 Issue 1, p315; Subject Term: EDDY currents (Electric); Subject Term: SURFACES (Technology) -- Defects; Subject Term: NOISE; Subject Term: FASTENERS; Subject Term: SIMULATION methods & models; Subject Term: JOINTS (Engineering); Author-Supplied Keyword: cracks; Author-Supplied Keyword: eddy current; Author-Supplied Keyword: fastener hole inspection; Author-Supplied Keyword: modeling; Author-Supplied Keyword: noise invariant features; NAICS/Industry Codes: 423710 Hardware Merchant Wholesalers; NAICS/Industry Codes: 416330 Hardware merchant wholesalers; NAICS/Industry Codes: 339993 Fastener, Button, Needle, and Pin Manufacturing; NAICS/Industry Codes: 339990 All other miscellaneous manufacturing; NAICS/Industry Codes: 332722 Bolt, Nut, Screw, Rivet, and Washer Manufacturing; Number of Pages: 8p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.2184545 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20064977&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ko, Ray T. AU - Blodgett, Mark P. AU - Sathish, Shamachary AU - Boehnlein, Thomas R. T1 - A Novel Multi-Frequency Eddy Current Measurement Technique for Materials Characterization. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/03/06/ VL - 820 IS - 1 M3 - Article SP - 415 EP - 422 PB - American Institute of Physics SN - 0094243X AB - In an effort to meet the needs for high frequency eddy current measurements and be able to distinguish small conductivity variations in different materials, a new eddy current module capable of measuring magnitude, phase, and frequency shift was developed and integrated into a general-purpose scanning system. Comparisons of three different parameter images are presented. The potential application of the multi-frequency, multi-parameter eddy current measurement technique for materials characterization to discriminate small conductivity changes is discussed. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - EDDY currents (Electric) KW - ELECTRIC conductivity KW - SCANNING systems KW - MATERIALS -- Testing KW - eddy current KW - frequency shift KW - multi-frequency KW - scattering coefficient N1 - Accession Number: 20064965; Ko, Ray T. 1 Blodgett, Mark P. 2 Sathish, Shamachary 1 Boehnlein, Thomas R. 1; Affiliation: 1: Structural Integrity Division, University of Dayton Research Institute, 300 College Park Drive, Dayton, Ohio 45469-0120 2: Metals, Ceramics, and NDE Division, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433; Source Info: 2006, Vol. 820 Issue 1, p415; Subject Term: NONDESTRUCTIVE testing; Subject Term: EDDY currents (Electric); Subject Term: ELECTRIC conductivity; Subject Term: SCANNING systems; Subject Term: MATERIALS -- Testing; Author-Supplied Keyword: eddy current; Author-Supplied Keyword: frequency shift; Author-Supplied Keyword: multi-frequency; Author-Supplied Keyword: scattering coefficient; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Illustrations: 2 Diagrams, 7 Graphs; Document Type: Article L3 - 10.1063/1.2184558 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20064965&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Sabbagh, Harold A. AU - Sabbagh, Elias H. AU - Murphy, R. Kim AU - Concordia, Michael AU - Judd, David R. AU - Lindgren, Eric AU - Knopp, Jeremy T1 - Methodology Using Inverse Methods for Pit Characterization in Multilayer Structures. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/03/06/ VL - 820 IS - 1 M3 - Article SP - 767 EP - 774 PB - American Institute of Physics SN - 0094243X AB - This paper presents a methodology incorporating ultrasonic and eddy current data and NDE models to characterize pits in first and second layers. Approaches such as equivalent pit dimensions, approximate probe models, and iterative inversion schemes were designed to improve the reliability and speed of inverse methods for second layer pit characterization. A novel clutter removal algorithm was developed to compensate for coherent background noise. Validation was achieved using artificial and real pitting corrosion samples. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INVERSION (Geophysics) KW - EDDY currents (Electric) KW - ULTRASONICS KW - NONDESTRUCTIVE testing KW - HOLES KW - ELECTRIC currents KW - clutter removal KW - corrosion KW - eddy current KW - inverse methods KW - ultrasonics N1 - Accession Number: 20064919; Aldrin, John C. 1 Sabbagh, Harold A. 2 Sabbagh, Elias H. 2 Murphy, R. Kim 2 Concordia, Michael 3 Judd, David R. 3 Lindgren, Eric 3 Knopp, Jeremy 4; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA 2: Victor Technologies LLC, Bloomington, IN 47401, USA 3: SAIC Ultra Image Int., New London, CT 06320, USA 4: Air Force Research Laboratory (AFRL/MLLP), Wright-Patterson AFB, OH 45433, USA; Source Info: 2006, Vol. 820 Issue 1, p767; Subject Term: INVERSION (Geophysics); Subject Term: EDDY currents (Electric); Subject Term: ULTRASONICS; Subject Term: NONDESTRUCTIVE testing; Subject Term: HOLES; Subject Term: ELECTRIC currents; Author-Supplied Keyword: clutter removal; Author-Supplied Keyword: corrosion; Author-Supplied Keyword: eddy current; Author-Supplied Keyword: inverse methods; Author-Supplied Keyword: ultrasonics; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.2184604 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20064919&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sathish, S. AU - Welter, J. AU - Reibel, R. AU - Buynak, C. T1 - Thermo-Elastic Characterization of Heat Damage in Carbon Fiber Epoxy Composites. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/03/06/ VL - 820 IS - 1 M3 - Article SP - 1015 EP - 1018 PB - American Institute of Physics SN - 0094243X AB - Several nondestructive evaluation (NDE) techniques are in use to inspect heat damage in organic matrix composites. Majority of the techniques detect major damage like cracking, delamination and blistering. An NDE technique sensitive to early stages of heat damage (“incipient” damage) is still elusive. This paper presents, a novel non-contact NDE method, based on detection and measurement of heat developed during the propagation of an acoustic wave through the material. The methodology was used to characterize the heat damage in carbon fiber epoxy composite. The results of temperature changes in heat damaged regions in the composite and its correlation with exposure time are presented. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOELASTICITY KW - THERMODYNAMICS KW - ELASTICITY KW - CARBON fibers KW - EPOXY compounds KW - COMPOSITE materials KW - composites KW - heat damage KW - NDE KW - nondestructive evaluation KW - ultrasonics N1 - Accession Number: 20064887; Sathish, S. 1 Welter, J. 2 Reibel, R. 1 Buynak, C. 2; Affiliation: 1: Structural Integrity Division, University of Dayton Research Institute, Dayton, OH 45469-0127 2: Metals, Ceramics and NDE Division, Air Force Research Laboratory Wright-Patterson Air Force Base, Dayton, OH 45433-7817; Source Info: 2006, Vol. 820 Issue 1, p1015; Subject Term: THERMOELASTICITY; Subject Term: THERMODYNAMICS; Subject Term: ELASTICITY; Subject Term: CARBON fibers; Subject Term: EPOXY compounds; Subject Term: COMPOSITE materials; Author-Supplied Keyword: composites; Author-Supplied Keyword: heat damage; Author-Supplied Keyword: NDE; Author-Supplied Keyword: nondestructive evaluation; Author-Supplied Keyword: ultrasonics; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; Number of Pages: 4p; Illustrations: 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1063/1.2184636 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20064887&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martinez, S. A. AU - Sathish, S. AU - Blodgett, M. P. AU - Mall, S. T1 - Surface Texture of Fretting Fatigue Damaged Shot Peened Titanium. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/03/06/ VL - 820 IS - 1 M3 - Article SP - 1370 EP - 1377 PB - American Institute of Physics SN - 0094243X AB - Fretting fatigue damage occurs at the contact between two surfaces, when a static load perpendicular to the interface and a cyclic load parallel to the surfaces are present. The fretting fatigue damage occurring on the surface is known to be responsible for initiation of surface breaking cracks and dramatic reduction of fatigue life of the materials and components. Many premature failures of the engine components of advanced fighter aircrafts have been attributed to the fretting fatigue damage. Though fretting fatigue damage occurs at the surface, NDE techniques have limited success in detecting early stages of damage. This paper presents a methodology based on optical profiling of the surface to evaluate the progression of damage in fretting fatigue damaged specimens of shot peened Ti-6Al-4V. Surface topography measurements performed using a white light interference microscope were analyzed to identify the surface texture parameters sensitive to progressive damage. Results of the relation between the number of fretting fatigue cycles, surface texture parameters, residual stress and the changing microstructure are presented. Potential of the optical surface profiling as a nondestructive evaluation tool for characterization of the fretting fatigue damage is discussed. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Fatigue KW - SHOT peening KW - TITANIUM KW - NONDESTRUCTIVE testing KW - RESIDUAL stresses KW - INTERFERENCE microscopes KW - Fretting fatigue KW - residual stress KW - white interference microscope N1 - Accession Number: 20064839; Martinez, S. A. 1 Sathish, S. 2 Blodgett, M. P. 1 Mall, S. 3; Affiliation: 1: Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45467-0127 3: Air Force Institute of Technology, Wright Patterson Air Force Base, OH 45433; Source Info: 2006, Vol. 820 Issue 1, p1370; Subject Term: MATERIALS -- Fatigue; Subject Term: SHOT peening; Subject Term: TITANIUM; Subject Term: NONDESTRUCTIVE testing; Subject Term: RESIDUAL stresses; Subject Term: INTERFERENCE microscopes; Author-Supplied Keyword: Fretting fatigue; Author-Supplied Keyword: residual stress; Author-Supplied Keyword: white interference microscope; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 8p; Illustrations: 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1063/1.2184684 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20064839&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hassan, W. AU - Blodgett, M. T1 - A New Multi-Gaussian Auto-Correlation Function for the Modeling of Realistic Shot Peened Random Rough Surfaces. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/03/06/ VL - 820 IS - 1 M3 - Article SP - 1394 EP - 1401 PB - American Institute of Physics SN - 0094243X AB - Shot peening is the primary surface treatment used to create a uniform, consistent, and reliable sub-surface compressive residual stress layer in aero engine components. A by-product of the shot peening process is random surface roughness that can affect the measurements of the resulting residual stresses and therefore impede their NDE assessment. High frequency eddy current conductivity measurements have the potential to assess these residual stresses in Ni-base super alloys. However, the effect of random surface roughness is expected to become significant in the desired measurement frequency range of 10 to 100 MHz. In this paper, a new Multi-Gaussian (MG) auto-correlation function is proposed for modeling the resulting pseudo-random rough profiles. Its use in the calculation of the Apparent Eddy Current Conductivity (AECC) loss due to surface roughness is demonstrated. The numerical results presented need to be validated with experimental measurements. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHOT peening KW - RESIDUAL stresses KW - NONDESTRUCTIVE testing KW - AUTOCORRELATION (Statistics) KW - EDDY currents (Electric) KW - ELECTRIC conductivity KW - Auto-correlation Function KW - Conductivity KW - Correlation Length KW - Eddy Current KW - Exponential KW - Multi-Gaussian KW - Random Surface Roughness KW - Residual Stresses KW - RMS N1 - Accession Number: 20064836; Hassan, W. 1 Blodgett, M. 2; Affiliation: 1: Honeywell Aerospace, 111 S. 34th Street, M/S 503-118 Phoenix, AZ 85034 2: Air Force Research Laboratory (AFRL/MLLP), 2230 10th Street, Suite 1, Dayton, OH 45433; Source Info: 2006, Vol. 820 Issue 1, p1394; Subject Term: SHOT peening; Subject Term: RESIDUAL stresses; Subject Term: NONDESTRUCTIVE testing; Subject Term: AUTOCORRELATION (Statistics); Subject Term: EDDY currents (Electric); Subject Term: ELECTRIC conductivity; Author-Supplied Keyword: Auto-correlation Function; Author-Supplied Keyword: Conductivity; Author-Supplied Keyword: Correlation Length; Author-Supplied Keyword: Eddy Current; Author-Supplied Keyword: Exponential; Author-Supplied Keyword: Multi-Gaussian; Author-Supplied Keyword: Random Surface Roughness; Author-Supplied Keyword: Residual Stresses; Author-Supplied Keyword: RMS; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 8p; Illustrations: 2 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.2184687 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20064836&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kacmar, C. J. AU - LaCivita, K. J. AU - Jata, K. V. AU - Sathish, S. T1 - Thermal Characterization of TPS Tiles. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/03/06/ VL - 820 IS - 1 M3 - Article SP - 1740 EP - 1747 PB - American Institute of Physics SN - 0094243X AB - The Thermal Protection System (TPS) used on space shuttles protects the metallic structure from the large amounts of heat created during travel through the atmosphere, both on takeoff and reentry. The shuttle experiences high thermo-acoustic loading and impact damage from micro-meteorites, which can cause disbonds, delaminations, chips, cracks, and other defects to the TPS system. To enhance durability and damage tolerance, new TPS tiles with an added protective ceramic-matrix-composite layer are being developed. This paper explores the use of pulsed thermography as a quick, diverse, non-destructive technique, to characterize the TPS system. The pulsed thermography images obtained are presented and analyzed. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - THERMOGRAPHY KW - SPACE shuttles KW - STRAINS & stresses (Mechanics) KW - TESTING KW - CMC KW - NDE KW - thermal protection system KW - thermography N1 - Accession Number: 20064792; Kacmar, C. J. 1 LaCivita, K. J. 2 Jata, K. V. 2 Sathish, S. 3; Affiliation: 1: Anteon Corporation, 5100 Springfield St., Suite 509, Dayton, OH 45431 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469; Source Info: 2006, Vol. 820 Issue 1, p1740; Subject Term: NONDESTRUCTIVE testing; Subject Term: THERMOGRAPHY; Subject Term: SPACE shuttles; Subject Term: STRAINS & stresses (Mechanics); Subject Term: TESTING; Author-Supplied Keyword: CMC; Author-Supplied Keyword: NDE; Author-Supplied Keyword: thermal protection system; Author-Supplied Keyword: thermography; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Illustrations: 11 Color Photographs; Document Type: Article L3 - 10.1063/1.2184731 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20064792&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kuhr, S. J. AU - Reibel, R. AU - Sathish, S. AU - Jata, K. V. T1 - Acoustic Characterization and Impact Sensing for Ceramic Thermal Protection Systems (TPS). JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/03/06/ VL - 820 IS - 1 M3 - Article SP - 1748 EP - 1755 PB - American Institute of Physics SN - 0094243X AB - A study was conducted to understand acoustic wave propagation characteristics in a ceramic matrix composite (CMC) wrapped tile thermal protection system (CMC+ Foam+ RTV+ SIP+ RTV+ Al) and ceramic foam. Sound velocities were measured in three orthogonal directions on the above material. The attenuation coefficients were also determined for a uncoated ceramic foam. Commercially available standard acoustic emission transducers, piezo-wafers and polymer based PVDF (polyvinylidiene fluoride) film were employed in the experiments to acquire the acoustic data. The performance characteristics of these sensors will be discussed in light of impact detection. Variation in the wave propagation characteristics along different directions and the role of processing in causing anisotropic acoustic properties in thermal protection systems will be discussed. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACOUSTIC emission testing KW - NONDESTRUCTIVE testing KW - ACOUSTICAL engineering KW - CERAMICS KW - SPEED of sound KW - attenuation KW - CMC KW - impact KW - sound velocity N1 - Accession Number: 20064791; Kuhr, S. J. 1 Reibel, R. 2 Sathish, S. 2 Jata, K. V. 3; Affiliation: 1: Anteon Corporation, 5100 Springfield St, Suite 509, Dayton, OH, 45431 2: University of Dayton Research Institute, 300 College Park, Dayton, OH, 45469 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, (AFRL/MLL), Wright-Patterson AFB, OH 45433; Source Info: 2006, Vol. 820 Issue 1, p1748; Subject Term: ACOUSTIC emission testing; Subject Term: NONDESTRUCTIVE testing; Subject Term: ACOUSTICAL engineering; Subject Term: CERAMICS; Subject Term: SPEED of sound; Author-Supplied Keyword: attenuation; Author-Supplied Keyword: CMC; Author-Supplied Keyword: impact; Author-Supplied Keyword: sound velocity; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Illustrations: 10 Diagrams, 2 Charts; Document Type: Article L3 - 10.1063/1.2184732 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20064791&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Medina, Enrique A. AU - Knopp, Jeremy T1 - Cost Benefit Analysis Tool Incorporating Probabilistic Risk Assessment for Structural Health Monitoring. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/03/06/ VL - 820 IS - 1 M3 - Article SP - 1910 EP - 1917 PB - American Institute of Physics SN - 0094243X AB - Prior work presented the development of a software platform for integrating NDI design and product life management tools to perform design tradeoffs in terms of cost and reliability. This work explores the development of probabilistic model components representing structural health monitoring systems, addressing the use of secondary NDE inspections and SHM system degradation. A discussion is presented concerning opportunities and pitfalls of SHM applications through both a qualitative survey and quantitative studies. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONDESTRUCTIVE testing KW - HEALTH risk assessment KW - PRODUCT management KW - PRODUCT life cycle KW - COMPUTER software development KW - cost benefit assessment KW - models KW - nondestructive evaluation KW - probabilistic risk assessment KW - structural health monitoring N1 - Accession Number: 20064771; Aldrin, John C. 1 Medina, Enrique A. 2 Knopp, Jeremy 3; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA 2: Austral Engineering & Software, Inc., Dayton, OH 45430, USA 3: Air Force Research Laboratory (AFRL/MLLP), Wright-Patterson AFB, OH 45433, USA; Source Info: 2006, Vol. 820 Issue 1, p1910; Subject Term: NONDESTRUCTIVE testing; Subject Term: HEALTH risk assessment; Subject Term: PRODUCT management; Subject Term: PRODUCT life cycle; Subject Term: COMPUTER software development; Author-Supplied Keyword: cost benefit assessment; Author-Supplied Keyword: models; Author-Supplied Keyword: nondestructive evaluation; Author-Supplied Keyword: probabilistic risk assessment; Author-Supplied Keyword: structural health monitoring; NAICS/Industry Codes: 541511 Custom Computer Programming Services; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); NAICS/Industry Codes: 923120 Administration of Public Health Programs; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Illustrations: 3 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.2184752 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20064771&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wei Shi AU - Ding, Yujie J. AU - Fernelius, Nils AU - Hopkins, F. Ken T1 - Observation of difference-frequency generation by mixing of terahertz and near-infrared laser beams in a GaSe crystal. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/03/06/ VL - 88 IS - 10 M3 - Article SP - 101101 PB - American Institute of Physics SN - 00036951 AB - We have observed difference-frequency generation by mixing terahertz and near-infrared laser beams in a GaSe crystal (i.e., terahertz frequency upconversion). This process has a potential for detecting terahertz waves. Using an InGaAs photodiode operating at room temperature the minimum detectable energy per pulse was 9.75 nJ. When a fast photomultiplier tube was used instead, the lowest-energy per pulse was measured to be 245 pJ. In addition, the temporal profile of the terahertz pulses was measured with a ns resolution. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER beams KW - PHOTODIODES KW - SEMICONDUCTOR diodes KW - PHOTOMULTIPLIERS KW - ELECTRON tubes KW - ELECTRONIC apparatus & appliances N1 - Accession Number: 20192740; Wei Shi 1 Ding, Yujie J. 1; Email Address: yud2@lehigh.edu Fernelius, Nils 2 Hopkins, F. Ken 2; Affiliation: 1: Department of Electrical and Computer Engineering, Lehigh University, Bethlehem, Pennsylvania 18015 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433; Source Info: 3/6/2006, Vol. 88 Issue 10, p101101; Subject Term: LASER beams; Subject Term: PHOTODIODES; Subject Term: SEMICONDUCTOR diodes; Subject Term: PHOTOMULTIPLIERS; Subject Term: ELECTRON tubes; Subject Term: ELECTRONIC apparatus & appliances; NAICS/Industry Codes: 327214 Glass manufacturing; NAICS/Industry Codes: 327215 Glass Product Manufacturing Made of Purchased Glass; NAICS/Industry Codes: 327212 Other Pressed and Blown Glass and Glassware Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; Number of Pages: 3p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.2177363 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20192740&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - CHAP AU - Deptula, David A. T1 - Effects-Based Operations. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2006///Spring2006 VL - 20 IS - 1 M3 - Book Chapter SP - 4 EP - 5 PB - Superintendent of Documents SN - 1555385X AB - A foreword to the "Effects-Based Operations" journal is presented. KW - PREFACES & forewords KW - MILITARY art & science N1 - Accession Number: 20033989; Deptula, David A. 1; Affiliation: 1: Vice Commander, Pacific Air Forces, United States Air Force; Source Info: Spring2006, Vol. 20 Issue 1, p4; Subject Term: PREFACES & forewords; Subject Term: MILITARY art & science; Number of Pages: 2p; Document Type: Book Chapter UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20033989&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tripp, Lloyd D. AU - Warm, Joel S. AU - Matthews, Gerald AU - Chiu, Peter AU - Werchan, Paul AU - Deaton, John E. T1 - +Gz acceleration loss of consciousness: time course of performance deficits with repeated experience. JO - Human Factors JF - Human Factors Y1 - 2006///Spring2006 VL - 48 IS - 1 M3 - journal article SP - 109 EP - 120 SN - 00187208 AB - Objectives: We examine the time course of performance recovery from gravity-induced loss of consciousness (GLOC) and evaluate the utility of exposing participants to repeated bouts of GLOC in promoting recovery time.Background: A substantial number of accidents among fighter pilots have resulted from episodes of GLOC. U.S. Air Force doctrine holds that when pilots experience GLOC, impairment lasts for 24 s, in which there are 12 s of complete unconsciousness and 12 s of confusion. However, there is reason to suspect that performance efficiency associated with GLOC is degraded well before unconsciousness sets in and that more than 24 s are required for performance efficiency to return to baseline levels. Additionally, there is a belief that repeated exposure to GLOC will reduce recovery time.Method: Centrifuge simulators were used to induce GLOC in U.S. Air Force personnel with math and tracking tasks employed to emulate flight performance. Participants were tested once per week for 4 consecutive weeks.Results: On average, performance deficits appeared 7.44 s prior to the onset of unconsciousness and persisted for 55.6 s following the GLOC event. Repeated exposure failed to moderate these results.Conclusion: The temporal course of performance deficits produced by GLOC far exceeds prior estimates. The problem is more serious than previously envisioned and it is not alleviated by repeated exposure to GLOC.Application: U.S. Air Force doctrine regarding the severity of GLOC and the utility of repeated exposure to this problem needs to be revised and these data incorporated into future aircraft auto recovery systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOSS of consciousness KW - NEUROLOGIC manifestations of general diseases KW - FIGHTER pilots KW - MILITARY air pilots KW - AIRCRAFT carriers -- Aircraft launching & recovery equipment KW - AERONAUTICS KW - MOTION KW - MILITARY personnel KW - TASK performance KW - OHIO KW - TEXAS N1 - Accession Number: 20787007; Tripp, Lloyd D. 1; Email Address: lloyd.tripp@wpath.af.mil Warm, Joel S. 1 Matthews, Gerald 1 Chiu, Peter 1 Werchan, Paul 2 Deaton, John E. 3; Affiliation: 1: University of Cincinnati, Cincinnati, Ohio 2: U. S. Air Force Research Laboratory, San Antonio, Texas 3: CHI Systems Inc., Orlando, Florida; Source Info: Spring2006, Vol. 48 Issue 1, p109; Subject Term: LOSS of consciousness; Subject Term: NEUROLOGIC manifestations of general diseases; Subject Term: FIGHTER pilots; Subject Term: MILITARY air pilots; Subject Term: AIRCRAFT carriers -- Aircraft launching & recovery equipment; Subject Term: AERONAUTICS; Subject Term: MOTION; Subject Term: MILITARY personnel; Subject Term: TASK performance; Subject Term: OHIO; Subject Term: TEXAS; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; Number of Pages: 12p; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20787007&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sanders, W.S. AU - Warner, J.S. AU - Miracle, D.B. T1 - Stability of Al-rich glasses in the Al–La–Ni system JO - Intermetallics JF - Intermetallics Y1 - 2006/03// VL - 14 IS - 3 M3 - Article SP - 348 EP - 351 SN - 09669795 AB - Abstract: The stability of Al-rich glasses in the Al–La–Ni ternary system has been measured. Glasses with critical thicknesses ranging from 270 to 780μm have been achieved. An in-situ two-phase amorphous region containing as much as ∼10vol.% of nanocrystals was also observed with critical thicknesses ranging from 420 to 950μm. Measurements of T g, T x and T ℓ, as well as other empirical measures of thermal stability based on these quantities, confirm the unusual thermal stability of these glasses. These results suggest that bulk Al-based glasses with a maximum critical thickness exceeding 1mm may be possible in alloys based on this system. [Copyright &y& Elsevier] AB - Copyright of Intermetallics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TERNARY system KW - METALLIC glasses KW - NANOCRYSTALS KW - ALLOYS KW - ALUMINUM KW - B. Glasses, metallic KW - B. Thermal stability KW - F. Calorimetry N1 - Accession Number: 19010613; Sanders, W.S. 1 Warner, J.S. 1 Miracle, D.B.; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH, USA; Source Info: Mar2006, Vol. 14 Issue 3, p348; Subject Term: TERNARY system; Subject Term: METALLIC glasses; Subject Term: NANOCRYSTALS; Subject Term: ALLOYS; Subject Term: ALUMINUM; Author-Supplied Keyword: B. Glasses, metallic; Author-Supplied Keyword: B. Thermal stability; Author-Supplied Keyword: F. Calorimetry; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.intermet.2005.06.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19010613&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kahandawala, Moshan S. P. AU - Corera, Shehan A. P. AU - Williams, Skip AU - Carter, Campbell D. AU - Sidhu, Sukh S. T1 - Investigation of kinetics of iso-octane ignition under scramjet conditions. JO - International Journal of Chemical Kinetics JF - International Journal of Chemical Kinetics Y1 - 2006/03// VL - 38 IS - 3 M3 - Article SP - 194 EP - 201 SN - 05388066 AB - A single pulse reflected shock tube was used to investigate iso-octane ignition over the temperature range of 900–1400 K at a pressure of ∼1 atm. To account for the anticipated long ignition delay times at the lower temperatures, long shock tube dwell times (∼12 ms) at lower temperature and near atmospheric pressure were achieved by using argon–helium mix as a driver gas. Chemical thermometer experiments were conducted to remove any uncertainties in determining postreflected shock temperatures. The ignition delay data obtained in this study are in good agreement (in the overlap region) with the iso-octane ignition data from a previous shock tube study. However, the activation energy of iso-octane ignition obtained in this study in the lower temperature region (<1300 K) is significantly smaller (∼15 kcal vs. ∼40 kcal) than that obtained in a previous higher temperature study. The deflagration may be responsible for lowering of activation energy under the conditions of this study. Two detailed iso-octane kinetic models (Air Force Research Laboratory—AFRL and Curran et al.) were used to model the experimental results of this study. The AFRL mechanism showed a good agreement with the experimental iso-octane ignition delays and their temperature dependence. © 2006 Wiley Periodicals, Inc. Int J Chem Kinet 38: 194–201, 2006 [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Chemical Kinetics is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHOCK tubes KW - ARGON KW - HELIUM KW - EFFECT of temperature on chemical kinetics KW - CHEMICAL affinity N1 - Accession Number: 21786492; Kahandawala, Moshan S. P. 1 Corera, Shehan A. P. 1 Williams, Skip 2 Carter, Campbell D. 2 Sidhu, Sukh S. 1,3; Email Address: sidhu@udri.udayton.edu; Affiliation: 1: Department of Mechanical and Aerospace Engineering, University of Dayton, 300 College Park, Dayton, OH 45469-0114 2: Air Force Research Laboratory, Propulsion Directorate, 1950 Fifth St., Wright-Patterson AFB, OH 45433-7521 3: Environmental Engineering, University of Dayton, 300 College Park, Dayton, OH 45469-0114; Source Info: Mar2006, Vol. 38 Issue 3, p194; Subject Term: SHOCK tubes; Subject Term: ARGON; Subject Term: HELIUM; Subject Term: EFFECT of temperature on chemical kinetics; Subject Term: CHEMICAL affinity; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 8p; Illustrations: 1 Diagram, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1002/kin.20155 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21786492&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fernandez, Abel I. AU - Dotan, I. AU - Miller, Thomas M. AU - Troe, J. AU - Friedman, Jeffrey F. AU - Viggiano, A. T1 - Collisional stabilization of highly vibrationally excited o-, m- and p-xylene ions (C8H10+) from 300–900K and 1–250Torr JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2006/03// VL - 249-250 M3 - Article SP - 379 EP - 384 SN - 13873806 AB - Abstract: Branching ratios for the reactions of O2+ with all three xylene isomers have been measured as a function of temperature over a wide range (300–900K) at a fixed number density (1.45×1016 moleculecm−3 of helium) and for m-xylene over an extended buffer gas pressure (50–250Torr of nitrogen) and temperature (473–623K) range. Rate constants measured under selected conditions indicate that the reactions proceed at the collisional rate. Two main products were observed in each reaction: the stabilized parent ion, C8H10+ (S) and a dissociative charge transfer product, C7H7+ (D). The ratio of S/D was found to vary significantly with both temperature and pressure. At high pressure very little dissociation occurred. Results of statistical modeling similar to that used in our studies of n-alkylbenzenes represent the data well. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - XYLENE KW - NUCLEAR isomers KW - CHARGE transfer KW - COLLISIONAL excitation KW - Collisional stabilization KW - Pressure dependence KW - Temperature dependence KW - Unimolecular dissociation KW - Xylene N1 - Accession Number: 19861842; Fernandez, Abel I. 1 Dotan, I. 2 Miller, Thomas M. 3 Troe, J. 4 Friedman, Jeffrey F. 5,6 Viggiano, A. 1; Email Address: albert.viggiano@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Rd., Hanscom AFB, MA 01731-3010, USA 2: Department of Natural Science, The Open University of Israel, 108 Ravutski St., Raanana 43107, Israel 3: Institute for Scientific Research, Boston College, USA 4: Institute for Physical Chemistry, University of Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany 5: Department of Physics, University of Puerto Rico, Mayaguez, 00681-9016 Puerto Rico 6: Air Force Research Laboratory, Directed Energy Directorate, Kirtland Air Force Base, Albuquerque, New Mexico 87117-5776, USA; Source Info: Mar2006, Vol. 249-250, p379; Subject Term: XYLENE; Subject Term: NUCLEAR isomers; Subject Term: CHARGE transfer; Subject Term: COLLISIONAL excitation; Author-Supplied Keyword: Collisional stabilization; Author-Supplied Keyword: Pressure dependence; Author-Supplied Keyword: Temperature dependence; Author-Supplied Keyword: Unimolecular dissociation; Author-Supplied Keyword: Xylene; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.ijms.2005.11.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19861842&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Millman, Daniel R. AU - King, Paul I. AU - Maple, Raymond C. AU - Beran, Philip S. AU - Chilton, Lawrence K. T1 - Estimating the Probability of Failure of a Nonlinear Aeroelastic System. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2006/03//Mar/Apr2006 VL - 43 IS - 2 M3 - Article SP - 504 EP - 516 SN - 00218669 AB - A limit-cycle oscillation (LCO) can be characterized by a subcritical or supercritical bifurcation, and bifurcations are shown to be discontinuities in the stochastic domain. The traditional polynomial-chaos-expansion method, which is a stochastic projection method, is too inefficient for estimating the LCO response surface because of the discontinuities associated with bifurcations. The objective of this research is to extend the stochastic projection method to include the construction of B-spline surfaces in the stochastic domain. The multivariate B-spline problem is solved to estimate the LCO response surface. A Monte Carlo simulation (MCS) is performed on this response surface to estimate the probability density function (PDF) of the LCO response. The stochastic projection method via B-splines is applied to the problem of estimating the PDF of a subcritical LCO response of a nonlinear airfoil in inviscid transonic flow. A probability of failure based upon certain failure criteria can then be computed from the estimated PDF. The stochastic algorithm provides a conservative estimate of the probability of failure of this aeroelastic system two orders of magnitude more efficiently than performing an MCS on the governing equations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OSCILLATIONS KW - BIFURCATION theory KW - MONTE Carlo method KW - ESTIMATION theory KW - AEROELASTICITY N1 - Accession Number: 20890528; Millman, Daniel R. 1,2,3 King, Paul I. 3,4 Maple, Raymond C. 3,4,5 Beran, Philip S. 6,7,8 Chilton, Lawrence K. 4; Affiliation: 1: U.S. Air Force Flight Test Center, Edwards Air Force Base, California 93524 2: AFIT Adjunct Assistant Professor, Major, USAF, U.S. Air Force Test Pilot School 3: Senior Member, AIAA 4: Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433 5: Assistant Professor, Lt. Col., USAF, Department of Aeronautics and Astronautics 6: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 7: Senior Research Aerospace Engineer, AFRL/VASD Associate 8: Fellow, AIAA; Source Info: Mar/Apr2006, Vol. 43 Issue 2, p504; Subject Term: OSCILLATIONS; Subject Term: BIFURCATION theory; Subject Term: MONTE Carlo method; Subject Term: ESTIMATION theory; Subject Term: AEROELASTICITY; Number of Pages: 13p; Illustrations: 1 Diagram, 4 Charts, 16 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20890528&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - DeLuca, Anthony M. AU - Reeder, Mark F. AU - Freeman, Jacob AU - Ol, Michael V. T1 - Flexible- and Rigid-Wing Micro Air Vehicle: Lift and Drag Comparison. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2006/03//Mar/Apr2006 VL - 43 IS - 2 M3 - Article SP - 572 EP - 575 SN - 00218669 AB - Presents a study which aims to characterize how the flexibility of the wing affects performance for a specific micro air vehicle. Series of tests performed in the U.S. Air Force Institute of Technology low-speed wind tunnel; Measurements that influence the accuracy of the results including ambient pressure and ambient temperature; Correction of the effects due to blockage and upwash due to image vortices. KW - AIRPLANE wings KW - AERODYNAMICS KW - DYNAMICS KW - WIND tunnels KW - UNITED States. Air Force N1 - Accession Number: 20890537; DeLuca, Anthony M. 1,2 Reeder, Mark F. 1,2 Freeman, Jacob 2,3 Ol, Michael V. 4,5; Affiliation: 1: U.S. Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433-7542 2: Member, AIAA 3: U.S. Air Force Research Laboratory, Eglin Air Force Base, Florida 4: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542 5: Senior Member, AIAA; Source Info: Mar/Apr2006, Vol. 43 Issue 2, p572; Subject Term: AIRPLANE wings; Subject Term: AERODYNAMICS; Subject Term: DYNAMICS; Subject Term: WIND tunnels; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 928110 National Security; Number of Pages: 4p; Illustrations: 2 Charts, 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20890537&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ruggiero, Frank H. AU - Michalakes, John AU - Nehrkorn, Thomas AU - Modica, George D. AU - Zou, Xiaolei T1 - Development and Tests of a New Distributed-Memory MM5 Adjoint. JO - Journal of Atmospheric & Oceanic Technology JF - Journal of Atmospheric & Oceanic Technology Y1 - 2006/03// VL - 23 IS - 3 M3 - Article SP - 424 EP - 436 PB - American Meteorological Society SN - 07390572 AB - Updated versions of the Tangent Linear Model (TLM) and adjoint of the fifth-generation Pennsylvania State University–National Center for Atmospheric Research Mesoscale Model (MM5) have been developed and are now available to the meteorological community. The previous version of the MM5 TLM and adjoint were designed for single-processor computer architectures, based on version 1 of MM5, and were hand coded, which made it difficult to maintain up-to-date versions of the TLM and the adjoint as MM5 evolved. The new TLM and adjoint are based on version 3 of MM5 and run efficiently on multiple-processor computers. The TLM and adjoint were developed with the aid of the Tangent Linear and Adjoint Model Compiler (TAMC) automatic code generator. While some manual intervention is still necessary, the use of the automatic code generator can significantly speed code development and lower code maintenance costs. The new TLM and adjoint contain most of the physics packages and observation operators that were available in the MM5 version 1 TLM and adjoint. The new adjoint has been combined with the MM5 version 3 nonlinear model and an updated minimization module in a four-dimensional variational data assimilation analysis configuration. Accuracy of the new TLM and adjoint has been verified by individual unit and system tests as well as comparisons with the adjoint from MM5 version 1. Timing tests showed substantial decreases in time to solution when increasing the number of processors devoted to the problem. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Atmospheric & Oceanic Technology is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATMOSPHERE -- Research KW - MATHEMATICAL models KW - COMPUTER systems KW - DATA analysis KW - METEOROLOGY KW - CODE generators KW - COMPUTER simulation KW - SIMULATION methods & models KW - NUMERICAL analysis N1 - Accession Number: 20455946; Ruggiero, Frank H. 1; Email Address: frank.ruggiero@hanscom.af.mil Michalakes, John 2 Nehrkorn, Thomas 3 Modica, George D. 3 Zou, Xiaolei 4; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 2: National Center for Atmospheric Research, Boulder, Colorado 3: Atmospheric and Environmental Research, Inc., Lexington, Massachusetts 4: Department of Meteorology, The Florida State University, Tallahassee, Florida; Source Info: Mar2006, Vol. 23 Issue 3, p424; Subject Term: ATMOSPHERE -- Research; Subject Term: MATHEMATICAL models; Subject Term: COMPUTER systems; Subject Term: DATA analysis; Subject Term: METEOROLOGY; Subject Term: CODE generators; Subject Term: COMPUTER simulation; Subject Term: SIMULATION methods & models; Subject Term: NUMERICAL analysis; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); NAICS/Industry Codes: 541512 Computer Systems Design Services; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20455946&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pavuk, Marian AU - Michalek, Joel E. AU - Ketchum, Norma S. T1 - Prostate cancer in US Air Force veterans of the Vietnam war. JO - Journal of Exposure Science & Environmental Epidemiology JF - Journal of Exposure Science & Environmental Epidemiology Y1 - 2006/03// VL - 16 IS - 2 M3 - Article SP - 184 EP - 190 PB - Nature Publishing Group SN - 15590631 AB - US Air Force veterans of Operation Ranch Hand sprayed herbicides contaminated with 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) in Vietnam from 1962 to 1971. Comparisons served in Southeast Asia (SEA) during the same time period but did not spray herbicides. Here we investigate a potential association between exposure to TCDD and prostate cancer. Data were available for 2516 veterans (1019 Ranch Hand and 1497 Comparison) who participated in at least one of six physical examinations starting in 1982 and had a measurement of serum TCDD. We assigned Ranch Hands to two exposure categories: Lower and Higher, based on their median 20-year cumulative TCDD level. In total, 81 Comparison and 59 Ranch Hand prostate cancers were identified between 1 January 1982 and 31 December 2003. We found no overall increase in the risk of prostate cancer in Ranch Hand veterans versus the Comparisons. There was a positive association in Ranch Hand veterans in the Higher TCDD category who served in SEA before 1969 (RR=2.27, 95% CI 1.11–4.66) when more contaminated herbicides were used, but the number of cases was small (n=15). A within-group comparison found that in Comparison veterans, time served in SEA was associated with an increased risk of prostate cancer (RR=2.18, 95% CI 1.27–3.76, >789 days versus ≤789 days). No increase in the risk of prostate cancer was observed within the Ranch Hand group in association with TCDD or time served in SEA. These analyses suggest that a longer service in SEA and exposures other than TCDD may have increased the risk of prostate cancer in Comparison veterans.Journal of Exposure Science and Environmental Epidemiology (2006) 16, 184–190. doi:10.1038/sj.jea.7500448; published online 27 July 2005 [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Exposure Science & Environmental Epidemiology is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPERATION Ranch Hand, 1962-1971 KW - HERBICIDES in war KW - VIETNAM War, 1961-1975 -- Chemical warfare KW - PROSTATE cancer KW - VETERANS KW - DISEASES KW - Agent Orange KW - cancer KW - prostate KW - Southeast Asia KW - TCDD KW - Vietnam veterans N1 - Accession Number: 20028918; Pavuk, Marian 1; Email Address: mpavuk@specpro-inc.com Michalek, Joel E. 2 Ketchum, Norma S. 2; Affiliation: 1: SpecPro Inc., San Antonio, Texas, USA 2: Air Force Research Laboratory, Brooks-City Base, Texas, USA; Source Info: Mar2006, Vol. 16 Issue 2, p184; Subject Term: OPERATION Ranch Hand, 1962-1971; Subject Term: HERBICIDES in war; Subject Term: VIETNAM War, 1961-1975 -- Chemical warfare; Subject Term: PROSTATE cancer; Subject Term: VETERANS; Subject Term: DISEASES; Author-Supplied Keyword: Agent Orange; Author-Supplied Keyword: cancer; Author-Supplied Keyword: prostate; Author-Supplied Keyword: Southeast Asia; Author-Supplied Keyword: TCDD; Author-Supplied Keyword: Vietnam veterans; NAICS/Industry Codes: 923140 Administration of Veterans' Affairs; Number of Pages: 7p; Illustrations: 5 Charts; Document Type: Article L3 - 10.1038/sj.jea.7500448 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20028918&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Callahan, M. AU - Wang, B.-G. AU - Rakes, K. AU - Bliss, D. AU - Bouthillette, L. AU - Suscavage, M. AU - Wang, S.-Q. T1 - GaN single crystals grown on HVPE seeds in alkaline supercritical ammonia. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2006/03// VL - 41 IS - 5 M3 - Article SP - 1399 EP - 1407 PB - Springer Science & Business Media B.V. SN - 00222461 AB - Ammonothermal growth (synthesis in supercritical ( sc) ammonia fluid) has the promise of producing large low defect gallium nitride crystals through the application of techniques similar to those used in hydrothermal growth. Retrograde solubility of GaN greater than 5% by weight using group I amides as mineralizers is demonstrated in high nickel content autoclaves at pressures of one to three kilobars and temperatures between 300 to 600°C. The above conditions were optimized to grow single-crystal GaN at rates up to 40 μm per day on one cm2 seeds. Gallium nitride Hydride Vapor Phase Epitaxy (HVPE) seeds are placed in the higher temperature zone below the nutrient basket employing the same configurations used in reverse gradient hydrothermal growth of berlinite (AlPO4). GaN single crystals grown by the ammonothermal technique were characterized by X-ray diffraction, photoluminescence, scanning electron microscopy (SEM), atomic force microscopy (AFM), and chemical etching. The nitrogen-terminated face tends to exhibita flatter surface morphology than the gallium-terminated face, which is made up of a series of hexagonal columns. Major impurities in the crystal include potassium from the mineralizer, metals from the autoclave, and oxygen. The nitrogen-terminated face incorporated a lower level of metallic impurities in comparison with the gallium-terminated face. Finally, several process phenomena such as ammonia decomposition, parasitic nucleation of GaN on the autoclave walls, impurity incorporation, and defect generation in single-crystal GaN layers grown on HVPE seeds are identified and their possible mechanisms are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - CRYSTALS KW - SUPERCRITICAL fluids KW - SOLUBILITY KW - AMMONIA KW - X-ray diffraction KW - NUCLEATION N1 - Accession Number: 19996161; Callahan, M. 1; Email Address: michael.callahan@hanscom.af.mil Wang, B.-G. 2 Rakes, K. 1 Bliss, D. 1 Bouthillette, L. 1 Suscavage, M. 1 Wang, S.-Q. 2; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA 01731, USA 2: Solid State Scientific, 27-2 Wright Road Hollis, NH 03049, USA; Source Info: Mar2006, Vol. 41 Issue 5, p1399; Subject Term: GALLIUM nitride; Subject Term: CRYSTALS; Subject Term: SUPERCRITICAL fluids; Subject Term: SOLUBILITY; Subject Term: AMMONIA; Subject Term: X-ray diffraction; Subject Term: NUCLEATION; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; NAICS/Industry Codes: 325311 Nitrogenous Fertilizer Manufacturing; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 325612 Polish and Other Sanitation Good Manufacturing; Number of Pages: 9p; Illustrations: 1 Color Photograph, 4 Black and White Photographs, 1 Diagram, 3 Charts, 4 Graphs; Document Type: Article L3 - 10.1007/s10853-006-7428-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19996161&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - DENTON, MICHAEL L. AU - SCHUSTER, KURT J. AU - ROCKWELL, BENJAMIN A. T1 - Accurate measure of laser irradiance threshold for near-infrared photo-oxidation with a modified confocal microscope. JO - Journal of Microscopy JF - Journal of Microscopy Y1 - 2006/03// VL - 221 IS - 3 M3 - Article SP - 164 EP - 171 PB - Wiley-Blackwell SN - 00222720 AB - Femtosecond mode-locked lasers are now being used routinely in multiphoton fluorescence and autofluorescence spectroscopy, are just beginning to be used in refractive surgery, and may be used in the future diagnosis of skin cancer. Pulses from these lasers induce non-linear effects in resultant tissue interactions. Using a modified confocal microscope with dispersion compensation and accurate measurements of beam diameter, a very low threshold was measured for photochemical oxidation in cultured cells. The measured threshold showed non-linear photo-oxidation at a peak irradiance and photon-flux density of 8.4 × 108 W cm−2 and 3.4 × 1027 photons cm−2 s−1, respectively (90-fs pulse). The impact of these findings is significant to those using ultrashort lasers because they provide a tangible reference point (microscope-independent) for the generation of photo-oxidative stress in laser-exposed tissues, and because they highlight the importance of dispersion compensation in minimizing collateral tissue damage. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microscopy is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUORESCENCE KW - SKIN -- Cancer KW - SPECTRUM analysis KW - PHOTOOXIDATIVE stress KW - PHOTOCHEMICAL oxidants KW - Confocal microscope KW - mode-locked near-infrared laser KW - photo-oxidation KW - two-photon absorption N1 - Accession Number: 20237918; DENTON, MICHAEL L. 1; Email Address: michael.denton.ctr@brooks.af.mil SCHUSTER, KURT J. 1 ROCKWELL, BENJAMIN A. 2; Affiliation: 1: Northrop Grumman, Life Sciences Research and Applications, 4241 Woodcock Drive, Suite B-100, San Antonio, Texas 78228, U.S.A. 2: Air Force Research Laboratory, AFRL/HEDO, Brooks City-Base, Texas, U.S.A.; Source Info: Mar2006, Vol. 221 Issue 3, p164; Subject Term: FLUORESCENCE; Subject Term: SKIN -- Cancer; Subject Term: SPECTRUM analysis; Subject Term: PHOTOOXIDATIVE stress; Subject Term: PHOTOCHEMICAL oxidants; Author-Supplied Keyword: Confocal microscope; Author-Supplied Keyword: mode-locked near-infrared laser; Author-Supplied Keyword: photo-oxidation; Author-Supplied Keyword: two-photon absorption; Number of Pages: 8p; Illustrations: 6 Color Photographs, 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1111/j.1365-2818.2006.01557.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20237918&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bolia, Robert T1 - The Utility of Force: The Art of War in the Modern World. JO - Naval War College Review JF - Naval War College Review Y1 - 2006///Spring2006 VL - 59 IS - 2 M3 - Book Review SP - 168 EP - 169 PB - Naval War College SN - 00281484 AB - The article reviews the book "The Utility of Force: The Art of War in the Modern World," by General Sir Rupert Smith. KW - WAR KW - NONFICTION KW - SMITH, Rupert KW - UTILITY of Force: The Art of War in the Modern World, The (Book) N1 - Accession Number: 21259017; Bolia, Robert 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base; Source Info: Spring2006, Vol. 59 Issue 2, p168; Subject Term: WAR; Subject Term: NONFICTION; Reviews & Products: UTILITY of Force: The Art of War in the Modern World, The (Book); People: SMITH, Rupert; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21259017&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dimiduk, Dennis M. AU - Koslowski, Marisol AU - LeSar, Richard T1 - Preface to the viewpoint set on: Statistical mechanics and coarse graining of dislocation behavior for continuum plasticity JO - Scripta Materialia JF - Scripta Materialia Y1 - 2006/03// VL - 54 IS - 5 M3 - Article SP - 701 EP - 704 SN - 13596462 AB - Abstract: The technical communities of solid mechanics, mechanical engineering, computational mechanics, and materials science and engineering invest significant effort to develop physically-based models of material plasticity. However, a comprehensive macroscopic model based entirely on the unit mechanisms at microscopic scales remains elusive, especially for crystalline solids. Internationally, researchers have recently begun to build a new framework for crystal plasticity based on the statistical mechanics of dislocation motion and coarse graining of dislocation ensemble effects. We have assembled a viewpoint set that describes recent advances in theory, modeling and experiments, to which this article serves as an introduction. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MECHANICS (Physics) KW - STATISTICAL mechanics KW - DEFORMATIONS (Mechanics) KW - RHEOLOGY KW - Dislocation dynamics KW - Dislocation structure KW - Micromechanical modeling KW - Plastic deformation KW - Statistical mechanics N1 - Accession Number: 19357614; Dimiduk, Dennis M. 1; Email Address: dennis.dimiduk@wpafb.af.mil Koslowski, Marisol 2 LeSar, Richard 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright-Patterson AFB, OH 45433-7817, United States 2: Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, United States; Source Info: Mar2006, Vol. 54 Issue 5, p701; Subject Term: MECHANICS (Physics); Subject Term: STATISTICAL mechanics; Subject Term: DEFORMATIONS (Mechanics); Subject Term: RHEOLOGY; Author-Supplied Keyword: Dislocation dynamics; Author-Supplied Keyword: Dislocation structure; Author-Supplied Keyword: Micromechanical modeling; Author-Supplied Keyword: Plastic deformation; Author-Supplied Keyword: Statistical mechanics; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2005.11.027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19357614&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Uchic, Michael D. AU - Dimiduk, Dennis M. AU - Wheeler, Robert AU - Shade, Paul A. AU - Fraser, Hamish L. T1 - Application of micro-sample testing to study fundamental aspects of plastic flow JO - Scripta Materialia JF - Scripta Materialia Y1 - 2006/03// VL - 54 IS - 5 M3 - Article SP - 759 EP - 764 SN - 13596462 AB - Abstract: Mechanical testing of micron-size samples provides distinct advantages over macroscopic testing for quantifying the fundamental processes governing plastic flow, such as the exploration of intrinsic size effects and direct, quantitative measures of strain heterogeneity and intermittency. Future advances include an expanded range of testing and data acquisition parameters, including spatially-localized displacement measurements. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MECHANICS (Physics) KW - DYNAMIC testing KW - PLASTICITY KW - FLUID dynamics KW - Compression test KW - Micro-sample testing KW - Size effects KW - Strain bursts N1 - Accession Number: 19357624; Uchic, Michael D. 1; Email Address: michael.uchic@wpafb.af.mil Dimiduk, Dennis M. 1 Wheeler, Robert 2 Shade, Paul A. 3 Fraser, Hamish L. 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, 2230 10th Street, AFRL/MLLMD, Wright-Patterson AFB, OH 45433, United States 2: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, United States 3: The Ohio State University, Department of Materials Science and Engineering, Columbus, OH 43210, United States; Source Info: Mar2006, Vol. 54 Issue 5, p759; Subject Term: MECHANICS (Physics); Subject Term: DYNAMIC testing; Subject Term: PLASTICITY; Subject Term: FLUID dynamics; Author-Supplied Keyword: Compression test; Author-Supplied Keyword: Micro-sample testing; Author-Supplied Keyword: Size effects; Author-Supplied Keyword: Strain bursts; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.scriptamat.2005.11.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19357624&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, Jihyun AU - Freitas, J.A. AU - Mittereder, J. AU - Fitch, R. AU - Kang, B.S. AU - Pearton, S.J. AU - Ren, F. T1 - Effective temperature measurements of AlGaN/GaN-based HEMT under various load lines using micro-Raman technique JO - Solid-State Electronics JF - Solid-State Electronics Y1 - 2006/03// VL - 50 IS - 3 M3 - Article SP - 408 EP - 411 SN - 00381101 AB - Abstract: We report on contact-free measurement of channel temperature of AlGaN/GaN HEMTs under different operation modes. Micro-Raman spectroscopy was successfully used to measure the temperature of operating HEMT devices with <1μm spatial resolution. Channel temperatures at various load lines were compared. The effective operating temperatures of AlGaN/GaN HEMTs were accessed from the calibration curve of passively heated AlGaN/GaN structures. A linear increase of junction temperature was observed when DC dissipated power was increased. The temperature of the center of the channel in the HEMT was higher than that near the edge by ∼30°C at 800mW DC power. The temperature range of class A operation mode is higher than that of class B operation mode. The operating device reached temperatures as high as 115°C at 800mW DC input power. [Copyright &y& Elsevier] AB - Copyright of Solid-State Electronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN spectroscopy KW - SPECTRUM analysis KW - TEMPERATURE measurements KW - SOLID state electronics KW - GaN KW - HEMT KW - Raman KW - Reliability KW - Temperature N1 - Accession Number: 20555125; Kim, Jihyun 1,2; Email Address: jihyun.kim@nrl.navy.mil Freitas, J.A. 3 Mittereder, J. 3 Fitch, R. 4 Kang, B.S. 2 Pearton, S.J. 2 Ren, F. 2; Affiliation: 1: Department of Chemical & Biological Engineering, Korea University, Seoul, South Korea 2: College of Engineering, University of Florida, Gainesville, FL 32611, United States 3: ESTD, Naval Research Laboratory, Washington, DC 20375, United States 4: Air Force Research Laboratory, Sensors Directorate, WPAFB, Dayton, OH 45433, United States; Source Info: Mar2006, Vol. 50 Issue 3, p408; Subject Term: RAMAN spectroscopy; Subject Term: SPECTRUM analysis; Subject Term: TEMPERATURE measurements; Subject Term: SOLID state electronics; Author-Supplied Keyword: GaN; Author-Supplied Keyword: HEMT; Author-Supplied Keyword: Raman; Author-Supplied Keyword: Reliability; Author-Supplied Keyword: Temperature; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.sse.2005.11.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20555125&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Austin, W. Chadwick AU - Kolenc, Antony Barone T1 - Who's Afraid of the Big Bad Wolf? The International Criminal Court as a Weapon of Asymmetric Warfare. JO - Vanderbilt Journal of Transnational Law JF - Vanderbilt Journal of Transnational Law Y1 - 2006/03// VL - 39 IS - 2 M3 - Article SP - 291 EP - 345 SN - 00902594 AB - The United States is engaged in a war on terror against enemies who wage "asymmetric war" through terrorism, media manipulation, and "law-fare"--exploiting judicial processes to achieve political or military objectives. This Article explores whether the fledgling International Criminal Court (ICC) could eventually be exploited by these groups as a tool of asymmetric "law-fare." It briefly traces the history of the ICC and recounts why the United States opposes the Court. Examining the methods of asymmetric war, the Authors then explore whether the ICC could be exploited by future asymmetric warriors. The Authors describe three asymmetric methods that could be used to exploit the Court: (1) misusing the Court's investigative processes, (2) filing questionable or fraudulent complaints, and (3) manipulating mass media. They then discuss three terrorist objectives that could be obtained through asymmetric tactics. The Authors conclude that, at its current stage, the Court does not pose a large threat from this exploitation. A future, more stable ICC, however, could pose a greater danger-- especially if the United States ratifies the Rome Treaty. [ABSTRACT FROM AUTHOR] AB - Copyright of Vanderbilt Journal of Transnational Law is the property of Vanderbilt Journal of Transnational Law and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERNATIONAL criminal courts KW - ASYMMETRIC warfare KW - MASS media & war KW - TERRORISM KW - UNITED States -- Foreign relations -- 2001-2009 N1 - Accession Number: 21559328; Austin, W. Chadwick 1,2 Kolenc, Antony Barone 3,4; Affiliation: 1: Associate Professor, United States Air Force Academy 2: Lieutenant Commander, U.S. Navy Reserves (J.D., University of Cincinnati College of Law) 3: Assistant Professor, United States Air Force Academy 4: Active-duty Major, U.S. Air Force (J.D., University of Florida College of Law); Source Info: Mar2006, Vol. 39 Issue 2, p291; Subject Term: INTERNATIONAL criminal courts; Subject Term: ASYMMETRIC warfare; Subject Term: MASS media & war; Subject Term: TERRORISM; Subject Term: UNITED States -- Foreign relations -- 2001-2009; Number of Pages: 55p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21559328&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mahalingam, K. AU - Eyink, K. G. AU - Brown, G. J. AU - Dorsey, D. L. AU - Kisielowski, C. F. AU - Thust, A. T1 - Quantifying stoichiometry of mixed-cation-anion III-V semiconductor interfaces at atomic resolution. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/02/27/ VL - 88 IS - 9 M3 - Article SP - 091904 PB - American Institute of Physics SN - 00036951 AB - Employing the focal-series reconstruction technique in high-resolution transmission electron microscopy, we obtained true atomic resolution images of interfacial disorder within cation and anion sublattices across interfaces in an InGaSb/InAs heterostructure. This enabled independent quantitative mapping of changes in the In–Ga and As–Sb contents across interfacial regions ∼0.6 nm in width. A comparison of the cation and anion sublattice images revealed that intermixing at the InGaSb-on-InAs interface is confined to the In–Ga sublattice. Also, atomic scale roughness within the As–Sb sublattice of the InAs-on-InGaSb interface was discerned. This approach is general, permitting atomic-scale compositional analysis of heterointerfaces with two species per sublattice. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STOICHIOMETRY KW - CATIONS KW - IONS KW - SEMICONDUCTOR junctions KW - TRANSMISSION electron microscopy KW - MOLECULAR beam epitaxy KW - FACTOR analysis N1 - Accession Number: 20064726; Mahalingam, K. 1; Email Address: krishnamurthy.mahalingam@wpafb.af.mil Eyink, K. G. 1 Brown, G. J. 1 Dorsey, D. L. 1 Kisielowski, C. F. 2 Thust, A. 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: NCEM, Lawrence Berkeley National Laboratory, Berkeley, California 94720 3: Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany; Source Info: 2/27/2006, Vol. 88 Issue 9, p091904; Subject Term: STOICHIOMETRY; Subject Term: CATIONS; Subject Term: IONS; Subject Term: SEMICONDUCTOR junctions; Subject Term: TRANSMISSION electron microscopy; Subject Term: MOLECULAR beam epitaxy; Subject Term: FACTOR analysis; Number of Pages: 3p; Illustrations: 1 Color Photograph, 2 Black and White Photographs, 2 Graphs; Document Type: Article L3 - 10.1063/1.2178771 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20064726&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Poutsma, John C. AU - Midey, Anthony J. AU - Viggiano, Albert A. T1 - Absolute rate coefficients for the reactions of O2-+N(4S3/2) and O2-+O(3P) at 298 K in a selected-ion flow tube instrument. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2006/02/21/ VL - 124 IS - 7 M3 - Article SP - 074301 PB - American Institute of Physics SN - 00219606 AB - The absolute rate coefficients at 298 K for the reactions of O2-+N(4S3/2) and O2-+O(3P) have been determined in a selected-ion flow tube instrument. O atoms are generated by the quantitative titration of N atoms with NO, where the N atoms are produced by microwave discharge on N2. The experimental procedure allows for the determination of rate constants for the reaction of the reactant ion with N4S3/2) and O(3P). The rate coefficient for O2-+N is found to be 2.3 × 10-10±40% cm³ molecule-1 s-1, a factor of 2 slower than previously determined. In addition, it was found that the reaction proceeds by two different reaction channels to give (1) NO2+e- and (2) O-+NO. The second channel was not reported in the previous study and accounts for ca. 35% of the reaction. An overall rate coefficient of 3.9 × 1010 cm³ molecule-1 s-1 was determined for O2-+O, which is slightly faster than previously reported. Branching ratios for this reaction were determined to be <55%O3+e- and >45%O-+O2. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL kinetics KW - ATOMS KW - CHEMICAL affinity KW - PARTICLES (Nuclear physics) KW - PHYSICAL & theoretical chemistry KW - REACTIVITY (Chemistry) N1 - Accession Number: 19876200; Poutsma, John C. 1,2 Midey, Anthony J. 1 Viggiano, Albert A. 1; Email Address: albert.viggiano@hanscom.al.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts 01731. 2: Department of Chemistry, College of William and Mary, Williamsburg, VA, 23187.; Source Info: 2/21/2006, Vol. 124 Issue 7, p074301; Subject Term: CHEMICAL kinetics; Subject Term: ATOMS; Subject Term: CHEMICAL affinity; Subject Term: PARTICLES (Nuclear physics); Subject Term: PHYSICAL & theoretical chemistry; Subject Term: REACTIVITY (Chemistry); Number of Pages: 4p; Illustrations: 2 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.2168152 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19876200&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Shea, M.A. T1 - Biological and physical oceanographic processes from satellite data JO - Advances in Space Research JF - Advances in Space Research Y1 - 2006/02/15/ VL - 37 IS - 4 M3 - Editorial SP - 763 EP - 763 SN - 02731177 N1 - Accession Number: 20566555; Shea, M.A. 1; Email Address: sssrc@msn.com; Affiliation: 1: Editor-in-Chief, Advances in Space Research Emeritus, Air Force Research Laboratory (VSBX), Hanscom AFB, Bedford, MA 01731-3010, USA; Source Info: Feb2006, Vol. 37 Issue 4, p763; Number of Pages: 1p; Document Type: Editorial L3 - 10.1016/j.asr.2006.03.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20566555&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kirawanich, Phumin AU - Gleason, David AU - Yakura, Susumu J. AU - Islam, N. E. T1 - Electromagnetic topology quasisolutions for aperture interactions using transmission line matrix. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2006/02/15/ VL - 99 IS - 4 M3 - Article SP - 044910 PB - American Institute of Physics SN - 00218979 AB - A hybrid simulation technique that integrates transmission line matrix method with electromagnetic topology solutions has been employed to link a field scattering problem at an aperture in order to analyze the frequency and temporal characteristics of electromagnetic pulses. Using this same unified multiconductor transmission line network formulation any subsequent coupling with cables at the other side of the aperture can be integrated into the solution. The hybrid circuit can also be integrated to any existing topological simulation circuit for analyzing very large electrical systems. Incorporation of the compaction technique in the topological simulation reduces the number of simulation grids significantly, resulting in efficient computation without sacrificing accuracy. The simulation results for scattering fields at the aperture compare well with the finite-difference time domain method. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC lines KW - ELECTROMAGNETIC pulses KW - SIMULATION methods & models KW - ELECTRICAL engineering KW - MICROWAVE transmission lines KW - ELECTROMAGNETIC fields N1 - Accession Number: 19933524; Kirawanich, Phumin 1 Gleason, David 1 Yakura, Susumu J. 2 Islam, N. E. 1; Email Address: islamn@missouri.edu; Affiliation: 1: Department of Electrical and Computer Engineering, University of Missouri, Columbia, Missouri 65211 2: Air Force Research Laboratory, Directed Energy Directorate, AFRL/DEHE, Kirtland Air Force Base (AFB), New Mexico 87117; Source Info: 2/15/2006, Vol. 99 Issue 4, p044910; Subject Term: ELECTRIC lines; Subject Term: ELECTROMAGNETIC pulses; Subject Term: SIMULATION methods & models; Subject Term: ELECTRICAL engineering; Subject Term: MICROWAVE transmission lines; Subject Term: ELECTROMAGNETIC fields; NAICS/Industry Codes: 541330 Engineering Services; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238910 Site Preparation Contractors; Number of Pages: 7p; Illustrations: 5 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.2173690 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19933524&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen Wei AU - Liming Dai AU - Roy, Ajit AU - Tolle, Tia Benson T1 - Multifunctional Chemical Vapor Sensors of Aligned Carbon Nanotube and Polymer Composites. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2006/02/08/ VL - 128 IS - 5 M3 - Article SP - 1412 EP - 1413 SN - 00027863 AB - This article presents information on a novel concept for developing a new class of multifunctional chemical vapor sensors with a low power consumption, high sensitivity, good selectivity, and excellent environmental stability by partially coating perpendicularly aligned carbon nanotube arrays with appropriate flexible polymer films. To broaden the scope of analytes to be detected by an aligned carbon nanotube-polymer composite film sensor, the authors coated the aligned nanotubes with a mixture solution of PVAc and PI in toluene. KW - DETECTORS KW - CHEMICAL vapor deposition KW - ENERGY consumption KW - NANOTUBES KW - TOLUENE KW - CARBON KW - POLYMERS N1 - Accession Number: 20074421; Chen Wei 1 Liming Dai 1; Email Address: ldai@udayton.edu Roy, Ajit 2 Tolle, Tia Benson 2; Affiliation: 1: Department of Chemical and Materials Engineering, School of Engineering, University of Dayton, Dayton, Ohio 45469-0240. 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, MLBC, Wright-Patterson AFB, Ohio 45433-7750.; Source Info: 2/8/2006, Vol. 128 Issue 5, p1412; Subject Term: DETECTORS; Subject Term: CHEMICAL vapor deposition; Subject Term: ENERGY consumption; Subject Term: NANOTUBES; Subject Term: TOLUENE; Subject Term: CARBON; Subject Term: POLYMERS; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 2p; Document Type: Article L3 - 10.1021/ja0570335 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20074421&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Oh, Se-Jin AU - Lee, Hwa-Jeong AU - Keum, Dong-Ki AU - Lee, Seong-Woo AU - Wang, David H. AU - Park, Soo-Young AU - Tan, Loon-Seng AU - Baek, Jong-Beom T1 - Multiwalled carbon nanotubes and nanofibers grafted with polyetherketones in mild and viscous polymeric acid JO - Polymer JF - Polymer Y1 - 2006/02/08/ VL - 47 IS - 4 M3 - Article SP - 1132 EP - 1140 SN - 00323861 AB - Abstract: Direct covalent attachment of amorphous and semicrystalline polyetherketones onto the surface of either an as-received multi-walled carbon nanotube (MWNT) or a vapor-grown carbon nanofiber (VGCNF) in polyphosphoric acid (PPA) with optimized P2O5 content resulted in uniform grafting of polyetherketones to these carbon nanoscale materials. Soxhlet extraction experiment, the spectra from FT-IR spectroscopy and the clear images from high-resolution transmission electron microscopy showed that the covalent attachment is effective in uniformly coating the PEK grafts on the surfaces of both MWNT and VGCNF. Additionally, a drastic increase in solution viscosity due to the formation of giant molecules was monitored during polymerization. As such, the resulting nanocomposites were easily fabricated via a simple compression molding technique. The alignment possibility of MWNT and VGCNF grafted with semicrystalline PEK in these thermoplastic nanocomposites via solution fiber spinning was also demonstrated. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - KETONES KW - SPECTRUM analysis KW - TRANSMISSION electron microscopy KW - POLYMERIZATION KW - THERMOPLASTICS KW - Carbon nanofibers KW - Carbon nanotubes KW - Nanocomposites N1 - Accession Number: 19691734; Oh, Se-Jin 1 Lee, Hwa-Jeong 1 Keum, Dong-Ki 1 Lee, Seong-Woo 2 Wang, David H. 3 Park, Soo-Young 2 Tan, Loon-Seng 4; Email Address: loon-seng.tan@wpafb.af.mil Baek, Jong-Beom 1; Email Address: jbbaek@chungbuk.ac.kr; Affiliation: 1: School of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 361-763, South Korea 2: Department of Polymer Science, Kyungpook National University, Taegu 702-701, South Korea 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA 4: Polymer Branch, Materials and Manufacturing Directorate, AFRL/MLBP, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: Feb2006, Vol. 47 Issue 4, p1132; Subject Term: KETONES; Subject Term: SPECTRUM analysis; Subject Term: TRANSMISSION electron microscopy; Subject Term: POLYMERIZATION; Subject Term: THERMOPLASTICS; Author-Supplied Keyword: Carbon nanofibers; Author-Supplied Keyword: Carbon nanotubes; Author-Supplied Keyword: Nanocomposites; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.polymer.2005.12.064 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19691734&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, David H. AU - Baek, Jong-Beom AU - Nishino, Shirley F. AU - Spain, Jim C. AU - Tan, Loon-Seng T1 - Thermally reactive phenylethynyl-terminated bis(benzylester) and bis(amide) monomers based on semi-enzymatically produced 6-phenylethynyl picolinic acid JO - Polymer JF - Polymer Y1 - 2006/02/08/ VL - 47 IS - 4 M3 - Article SP - 1197 EP - 1206 SN - 00323861 AB - Abstract: The synthesis and isolation of 6-phenylethynyl picolinic acid (PEPCA; IUPAC name: 6-(2-phenylethynyl)pyridine-2-carboxylic acid) was first demonstrated when Acinetobacter sp. strain F4 was used to biotransform diphenylacetylene to the ring-fission product that underwent facile ring closure to form PEPCA in the presence of ammonium ions. Here, the structure and properties of PEPCA were confirmed by comparison with those of PEPCA that was chemically synthesized. In the chemical route, commercially available 6-bromopicolinic acid was first converted to methyl 6-bromopicolinate using methyl iodide and 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU). The resulting methylester was coupled with phenylacetylene by the palladium-catalyzed reaction to yield methyl 6-phenylethynyl picolinate, which was then hydrolyzed by sodium carbonate to afford PEPCA. Both enzymatically and chemically synthesized PEPCA were used to prepare its thermally reactive bis(benzylester) and bis(amide) derivatives. Thus, three phenylethynyl-terminated bis(amide) derivatives were synthesized by treating PEPCA with 1,3-phenylenediamine, 4,4′-oxydianiline or 4,4′-(hexafluoroisopropylidene)dianiline via dicyclohexylcarbodiimide (DCC)-mediated amidation. The bis(benzylester) derivative was prepared from PEPCA and α,α′-dibromo-p-xylene. All the intermediates and final products were characterized by FT-IR, NMR, MS and elemental analysis. The thermal properties of PEPCA and the reactive derivatives were characterized by DSC and TGA. The exothermic peaks of three bis(amide) derivatives were at least 20–40°C lower than typically reported for the phenylethynyl compounds. Lowered reaction temperatures observed for the thermally-induced free radical polymerization of phenylethynyl groups were attributed to the strong electron-withdrawing capability of the pyridine moiety. Bis(amide) derivatives exhibited excellent thermal stability after previously cured at 300°C for 30min and 350°C for 30min. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACINETOBACTER KW - AMMONIUM ions KW - PALLADIUM KW - SODIUM carbonate KW - AMIDES KW - Phenylethynyl KW - Picolinic acid KW - Thermosetting resin N1 - Accession Number: 19691742; Wang, David H. 1 Baek, Jong-Beom 1,2 Nishino, Shirley F. 3,4 Spain, Jim C. 3,4 Tan, Loon-Seng 5; Email Address: loon-seng.tan@wpafb.af.mil; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469-0168, USA 2: School of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 361-763, South Korea 3: Deployed Base Systems Branch, AFRL/MLQL, Air Force Research Laboratory, Tyndall Air Force Base, FL 32402-5323, USA 4: Environmental Engineering Program, Georgia Institute of Technology, Atlanta, GA 30332-0512, USA 5: Polymer Branch, AFRL/MLBP, Air Force Research Laboratory, Bldg 654, 2941 P Street, Wright-Patterson Air Force Base, OH 45433-7750, USA; Source Info: Feb2006, Vol. 47 Issue 4, p1197; Subject Term: ACINETOBACTER; Subject Term: AMMONIUM ions; Subject Term: PALLADIUM; Subject Term: SODIUM carbonate; Subject Term: AMIDES; Author-Supplied Keyword: Phenylethynyl; Author-Supplied Keyword: Picolinic acid; Author-Supplied Keyword: Thermosetting resin; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 325181 Alkali and chlorine manufacturing; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212391 Potash, Soda, and Borate Mineral Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.polymer.2005.12.061 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19691742&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lau, Kah Chun AU - Pati, Ranjit AU - Pandey, Ravindra AU - Pineda, Andrew C. T1 - First-principles study of the stability and electronic properties of sheets and nanotubes of elemental boron JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2006/02/06/ VL - 418 IS - 4-6 M3 - Article SP - 549 EP - 554 SN - 00092614 AB - Abstract: The structural and electronic properties of sheets and nanotubes of boron are investigated using density functional theory. The calculations predict the stability of a novel reconstructed {1221} sheet over the ‘idealized’ triangular {1212} sheet. Nanotubes formed by wrapping the half-metallic {1221} sheet show a curvature-induced transition in their electronic properties. Analysis of the charge density reveals a mixed metallic- and covalent-type of bonding in the reconstructed {1221} sheet and the corresponding nanotubes, in contrast to metallic-type bonding in the idealized {1212} sheet and its analogous nanotubes. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DENSITY functionals KW - FUNCTIONAL analysis KW - FULLERENES KW - NANOTUBES N1 - Accession Number: 19597936; Lau, Kah Chun 1 Pati, Ranjit 1 Pandey, Ravindra 1; Email Address: pandey@mtu.edu Pineda, Andrew C. 2,3; Affiliation: 1: Department of Physics and Multi-scale Technology Institute, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931-1295, United States 2: Department of Chemistry, University of New Mexico, Albuquerque, NM 87131-0001, United States 3: US Air Force Research Laboratory, Kirtland Air Force Base, NM 87117, United States; Source Info: Feb2006, Vol. 418 Issue 4-6, p549; Subject Term: DENSITY functionals; Subject Term: FUNCTIONAL analysis; Subject Term: FULLERENES; Subject Term: NANOTUBES; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.cplett.2005.10.104 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19597936&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - J. Troe AU - V. G. Ushakov AU - A. A. Viggiano T1 - On the Model Dependence of Kinetic Shifts in Unimolecular Reactions:  The Dissociation of the Cations of Benzene and n-Butylbenzene. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2006/02/02/ VL - 110 IS - 4 M3 - Article SP - 1491 EP - 1499 SN - 10895639 AB - Statistical adiabatic channel model/classical trajectory (SACM/CT) calculations have been performed for transitional mode dynamics in the simple bond fission reactions of C6H6+ → C6H5+ + H and n. 6H5C4H9+ → C7H7+ + n. 3H7. Reduced-dimensionality model potentials have been designed that take advantage of ab initio results as far as available. Average anisotropy amplitudes of the potentials were fitted by comparison of calculated specific rate constants k(E,J) with measured values. The kinetic shifts of the calculated k(E) curves and the corresponding bond energies E0(J=0), derived as 3.90 ± 0.05 eV for C6H6+ and 1.78 ± 0.05 eV for n. 6H5C4H9+, were in good agreement with literature values from thermochemical studies. Kinetic shifts from fixed tight activated complex Rice−Ramsperger−Kassel−Marcus (RRKM) theory, which also reproduces the measured k(E), were larger than the present SACM/CT results as well as earlier results from variational transition state theory (for C6H6+). The approach using RRKM theory was found to underestimate E0(J=0) by about 0.2−0.3 eV. A simplified SACM/CT-based method is also proposed which circumvents the trajectory calculations and allows derivation of E0(J=0) on the basis of measured k(E) and which provides similar accuracy as the full SACM/CT treatment. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL reactions KW - MATTER -- Properties KW - AROMATIC compounds KW - CATIONS N1 - Accession Number: 20458157; J. Troe 1 V. G. Ushakov 1 A. A. Viggiano 1; Affiliation: 1: Institute for Physical Chemistry, University of Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany, Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia, and Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom Air Force Base, Massachusetts 01731-3010; Source Info: Feb2006, Vol. 110 Issue 4, p1491; Subject Term: CHEMICAL reactions; Subject Term: MATTER -- Properties; Subject Term: AROMATIC compounds; Subject Term: CATIONS; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20458157&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morgan, Philip E. AU - Rizzetta, Donald P. AU - Visbal, Miguel R. T1 - High-Order Numerical Simulation of Turbulent Flow over a Wall-Mounted Hump. JO - AIAA Journal JF - AIAA Journal Y1 - 2006/02// VL - 44 IS - 2 M3 - Article SP - 239 EP - 251 SN - 00011452 AB - The development of a high-order spatial discretization for a k-∈ turbulence model and its application to flow over a wall-mounted hump is described. The high-order implementation is validated for a flat plate and subsequently applied to the more complex wall-mounted hump for conditions with and without flow control. Results for the hump flow are compared to experimental data. The turbulence model is incorporated in an implicit parallel flow solver that is based on an approximately factored time-integration method coupled with spatially fourth- and sixth-order compact-difference formulations and a high-order filtering strategy. Both second-order and high-order discretizations of the k-∈ turbulence equations were included in the compact solver. Validation using flow over a flat plate demonstrated that use of a second-order scheme for the k-∈ turbulence equations dominates the solution even when high-order compact differencing is used for the flow equations. This validation also demonstrated that significant computational savings are possible because less mesh resolution is required when using a high-order discretization of the k-∈ turbulence equations. Comparison of the high-order and second-order solutions was also performed for the wall-mounted hump. Qualitative agreement was achieved with experimental data for both high- and low-order schemes. High-order solutions on a coarse grid agreed very well with second-order solutions on a considerably finer grid. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TURBULENCE KW - JETS (Fluid dynamics) KW - FLUID dynamics KW - EQUATIONS KW - QUALITATIVE research KW - COMPRESSIBILITY N1 - Accession Number: 20352077; Morgan, Philip E. 1 Rizzetta, Donald P. 2 Visbal, Miguel R. 3; Affiliation: 1: Senior Scientist, Ohio Aerospace Institute, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512 2: Senior Research Aerospace Engineer, Computational Sciences Branch, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512 3: Technical Area Leader, Computational Sciences Branch, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512; Source Info: Feb2006, Vol. 44 Issue 2, p239; Subject Term: TURBULENCE; Subject Term: JETS (Fluid dynamics); Subject Term: FLUID dynamics; Subject Term: EQUATIONS; Subject Term: QUALITATIVE research; Subject Term: COMPRESSIBILITY; Number of Pages: 14p; Illustrations: 2 Charts, 22 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20352077&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Murugappan, S. AU - Gutmark, E. AU - Carter, C. AU - Donbar, J. AU - Gruber, M. AU - Hsu, K.-Y. T1 - Transverse Supersonic Controlled Swirling Jet in a Supersonic Cross Stream. JO - AIAA Journal JF - AIAA Journal Y1 - 2006/02// VL - 44 IS - 2 M3 - Article SP - 290 EP - 300 SN - 00011452 AB - The spreading rate and mixing of a transverse jet in high-speed crossflow were modified using a swirling injector with a central control jet. The controlled supersonic swirling injector (CSSI) could be used to affect mixing both in the core and the shear layer of the jet. Rayleigh/Mie scattering from flowfield ice crystals and planar laser-induced fluorescence of the NO molecules were used to characterize penetration and mixing of the CSSI for six different cases. Instantaneous images were used to study the dynamical structures in the jet, whereas ensemble images provided information regarding the jet trajectory. Standard deviation images revealed information about the large-scale mixing/entrainment. Probability density functions were used to evaluate the probability and location of freestream, mixed, and jet fluid. They were also used to track the centerline and jet boundary on a dynamic scale. Side-(streamwise)-view images showed that the injector was capable of providing high penetration when compared to circular and swirling baseline injectors. An increase of 16% in mixing area was observed with the optimal case as compared with the other control cases. End-(spanwise)-view images show a maximum of 78 % increase in total area contained within the jet boundary for the optimal case when compared to the circular injector. Higher spanwise extent of the jet boundary was also observed with controlled cases, which could provide higher interfacial area for better mixing between the jet and the cross stream when compared to their baseline counterparts. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JETS (Fluid dynamics) KW - INJECTORS KW - SHEAR waves KW - ICE crystals KW - SUPERSONIC aerodynamics KW - STANDARD deviations KW - PROBABILITY theory N1 - Accession Number: 20352082; Murugappan, S. 1 Gutmark, E. 2 Carter, C. 3 Donbar, J. 3,4 Gruber, M. 3 Hsu, K.-Y. 5; Affiliation: 1: Visiting Research Assistant Professor, Department of Aerospace Engineering, University of Cincinnati, Cincinnati, Ohio 45221-0070 2: Chaired Professor, Department of Aerospace Engineering, University of Cincinnati, Cincinnati, Ohio 45221-0070 3: Senior Aerospace Engineering, Advanced Propulsion Division, 1950 Fifth Street, US. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 4: Associate Professor/Coordinator, Automation and Control Technology Department, Sinclair Community College, Dayton, OH 45402-1460 5: Research Scientist, 2766 Indian Ripple Road, Innovative Scientific Solutions, Inc., Dayton, Ohio 45440; Source Info: Feb2006, Vol. 44 Issue 2, p290; Subject Term: JETS (Fluid dynamics); Subject Term: INJECTORS; Subject Term: SHEAR waves; Subject Term: ICE crystals; Subject Term: SUPERSONIC aerodynamics; Subject Term: STANDARD deviations; Subject Term: PROBABILITY theory; Number of Pages: 11p; Illustrations: 2 Diagrams, 1 Chart, 13 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20352082&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grenier, John T1 - Army and Empire: British Soldiers on the American Frontier, 1758-1775. JO - American Historical Review JF - American Historical Review Y1 - 2006/02// VL - 111 IS - 1 M3 - Book Review SP - 122 EP - 122 PB - Oxford University Press / USA SN - 00028762 AB - The article reviews the book "Army and Empire: British Soldiers on the American Frontier, 1758-1775," by Michael N. McConnell. KW - ARMED Forces KW - HISTORY KW - NONFICTION KW - UNITED States KW - MCCONNELL, Michael N. KW - ARMY & Empire: British Soldiers on the American Frontier 1758-1775 (Book) N1 - Accession Number: 19865849; Grenier, John 1; Affiliation: 1: United States Air Force Academy; Source Info: Feb2006, Vol. 111 Issue 1, p122; Subject Term: ARMED Forces; Subject Term: HISTORY; Subject Term: NONFICTION; Subject Term: UNITED States; Reviews & Products: ARMY & Empire: British Soldiers on the American Frontier 1758-1775 (Book); NAICS/Industry Codes: 928110 National Security; People: MCCONNELL, Michael N.; Number of Pages: 3/5p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19865849&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nishino, Shirley F. AU - Spain, Jim C. T1 - Biodegradation of 3-Nitrotyrosine by Burkholderia sp. Strain JS165 and Variovorax paradoxus JS171. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2006/02// VL - 72 IS - 2 M3 - Article SP - 1040 EP - 1044 SN - 00992240 AB - The cascade of reactive nitrogen species generated from nitric oxide causes modification of proteins, lipids, and nucleic acids in a wide range of organisms. 3-Nitrotyrosine is one of the most common products of the action of reactive nitrogen species on proteins. Although a great deal is known about the formation of 3-nitrotyrosine, the subsequent metabolism of this compound is a mystery. Variovorax paradoxus JS171 and Burkholderia sp. strain JS165 were isolated from soil slurries when 3-nitrotyrosine was provided as the sole carbon, nitrogen, and energy source. During growth on 3-nitrotyrosine stoichiometric amounts of nitrite were released along with approximately one-half of the theoretically available ammonia. The catabolic pathway involving oxidative denitration is distinct from the pathway for tyrosine metabolism. The facile isolation and the specific, regulated pathway for 3-nitrotyrosine degradation in natural ecosystems suggest that there is a significant flux of 3-nitrotyrosine in such environments. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NITROGEN KW - NITROGEN compounds KW - BIODEGRADATION KW - NITRIC oxide KW - TYROSINE KW - PROTEINS KW - AMMONIA KW - BIOTIC communities KW - METABOLISM N1 - Accession Number: 20080101; Nishino, Shirley F. 1,2 Spain, Jim C. 1,2; Email Address: jspain@ce.gatech.edu; Affiliation: 1: Air Force Research Laboratory, Tyndall Air Force Base, Florida 32403-5323. 2: School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0512.; Source Info: Feb2006, Vol. 72 Issue 2, p1040; Subject Term: NITROGEN; Subject Term: NITROGEN compounds; Subject Term: BIODEGRADATION; Subject Term: NITRIC oxide; Subject Term: TYROSINE; Subject Term: PROTEINS; Subject Term: AMMONIA; Subject Term: BIOTIC communities; Subject Term: METABOLISM; NAICS/Industry Codes: 325311 Nitrogenous Fertilizer Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325612 Polish and Other Sanitation Good Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1128/AEM.72.2.1040-1044.2006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20080101&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chioujones, K.M. AU - Ho, W. AU - Fathollahi, B. AU - Chau, P.C. AU - Wapner, P.G. AU - Hoffman, W.P. T1 - Microstructural analysis of in situ mesophase transformation in the fabrication of carbon–carbon composites JO - Carbon JF - Carbon Y1 - 2006/02// VL - 44 IS - 2 M3 - Article SP - 284 EP - 292 SN - 00086223 AB - Abstract: In this work, we examined the microstructures formed during the pyrolysis of naphthalene mixed with AlCl3 catalyst, in the critical temperature range of 300–500°C and at varying pressures. In addition, non-rigidized preforms were densified by multiple cycle in situ transformation and compared the process with impregnation using fully transformed AR mesophase pitch under similar conditions. The process of mesophase formation in the bulk phase and within tightly packed fiber bundles was observed to be similar: spherule nucleation from the isotropic phase, coalescence of spherules forming bulk mesophase, and mesophase flow before hardening. The hardened mesophase displays the coarse, fibrous, and lamellar microstructure observed in needle cokes. The molten naphthalene was observed to evenly penetrate in-depth the large void spaces and fiber bundles. After two in situ cycles, the fiber bundles and the inter-fiber bundle regions were well filled with transformed mesophase. The incremental filling of the larger void spaces reduced the calculated filling efficiencies from 47% in the first cycle to below 15% in the third through fifth cycle. An 8% improvement in densification efficiencies was achieved by applying modest pressures during the pyrolysis. The extent of mesophase penetration with AR mesophase was observed to decrease from the outer to the inner regions of the preform. The results suggest impregnation with naphthalene catalyst mixture is efficient in filling tightly packed fiber bundles but not large void spaces. Multiple cycles are required in order to fill the large void spaces. [Copyright &y& Elsevier] AB - Copyright of Carbon is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - MORPHOLOGY KW - NAPHTHALENE KW - ALUMINUM chloride KW - CARBON composites KW - Mesophase ( Carbon composite ) KW - Microstructure KW - Optical microscopy N1 - Accession Number: 18983220; Chioujones, K.M. 1 Ho, W. 1 Fathollahi, B. 1; Email Address: bfatholl@ucsd.edu Chau, P.C. 1 Wapner, P.G. 2 Hoffman, W.P. 3; Affiliation: 1: Chemical Engineering Program, University of California, San Diego, La Jolla CA 92093-0411, United States 2: ERC Inc., 10 East Saturn BLVD, Edwards, CA 93524, United States 3: Air Force Research Laboratory, 10 East Saturn BLVD, Edwards, CA 93524, United States; Source Info: Feb2006, Vol. 44 Issue 2, p284; Subject Term: MICROSTRUCTURE; Subject Term: MORPHOLOGY; Subject Term: NAPHTHALENE; Subject Term: ALUMINUM chloride; Subject Term: CARBON composites; Author-Supplied Keyword: Mesophase ( Carbon composite ); Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Optical microscopy; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.carbon.2005.07.026 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18983220&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lanter, William C. AU - Ingram, David C. AU - DeJoseph, Charles A. T1 - Amorphous carbon nitride for high temperature capacitor dielectric JO - Diamond & Related Materials JF - Diamond & Related Materials Y1 - 2006/02// VL - 15 IS - 2/3 M3 - Article SP - 259 EP - 263 SN - 09259635 AB - Abstract: Amorphous carbon nitride (CN x ) film is being investigated for use as a high temperature dielectric for high energy density, high pulse power capacitors. It is anticipated that CN x will display properties of high thermal conductivity, thermal stability, electrical resistance, and electrical breakdown strength. Through control of the vacuum environment and deposition parameters of a dual ion-beam assisted, ion-beam sputter deposition system, CN x films were recently created with Nitrogen-to-Carbon (N/C) ratios up to 0.70. Elemental analysis using Rutherford-Backscattering Spectroscopy (RBS) and Elastic Recoil Spectroscopy (ERS) on CN x samples annealed in 99.999% argon shows that the resulting films are thermally stable up to 500 °C. Capacitance measurements performed on these CN x films reveal resistivities up to 1×1012 Ω cm. [Copyright &y& Elsevier] AB - Copyright of Diamond & Related Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRIC devices KW - NITRIDES KW - AMORPHOUS semiconductors KW - SPECTRUM analysis KW - Amorphous KW - Carbon nitride KW - Electrical properties KW - Thermal properties N1 - Accession Number: 20184615; Lanter, William C. 1; Email Address: william.lanter@wpafb.af.mil Ingram, David C. 2 DeJoseph, Charles A. 3; Affiliation: 1: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Rd., Beavercreek, OH 45440, USA 2: Condensed Matter and Surface Science Program, Department of Physics and Astronomy, Edwards Accelerator Laboratory, Ohio University, Athens, OH 45701, USA 3: Air Force Research Laboratory (AFRL/PRPE), Wright-Patterson AFB, OH 45433, USA; Source Info: Feb2006, Vol. 15 Issue 2/3, p259; Subject Term: DIELECTRIC devices; Subject Term: NITRIDES; Subject Term: AMORPHOUS semiconductors; Subject Term: SPECTRUM analysis; Author-Supplied Keyword: Amorphous; Author-Supplied Keyword: Carbon nitride; Author-Supplied Keyword: Electrical properties; Author-Supplied Keyword: Thermal properties; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.diamond.2005.10.067 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20184615&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rangaswamy, M. T1 - Impact of diverse polarisations on clutter statistics. JO - IEE Proceedings -- Radar, Sonar & Navigation JF - IEE Proceedings -- Radar, Sonar & Navigation Y1 - 2006/02// VL - 153 IS - 1 M3 - Article SP - 30 EP - 34 PB - Institution of Engineering & Technology SN - 13502395 AB - The author addresses the impact of diverse polarisations on clutter statistics in the context of waveform diversity for multi-functional operation from a specific platform as well as for multiple sensing from multiple platforms. A key issue in this context is that of clutter mitigation via the use of diverse waveforms. Classical space–time adaptive processing (STAP) methods for radar target detection can be viewed in the context of a whiten and match filter. To this end, efficient waveforms that lend themselves for such processing are sought. The author specifically considers a statistical analysis of experimental data collected at low grazing angles to validate the fact that vertical transmit–vertical receive (VV) polarised data conform to Rayleigh scatter, whereas horizontal transmit–horizontal receive data do not. Consequently, VV data are suitable for whiten and match processing adopted in conventional radar STAP. [ABSTRACT FROM AUTHOR] AB - Copyright of IEE Proceedings -- Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR targets KW - RAYLEIGH scattering KW - LIGHT -- Scattering KW - RADAR KW - ELECTRONIC systems KW - DETECTORS N1 - Accession Number: 19718653; Rangaswamy, M. 1; Email Address: muralidhar.rangaswamy@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory/SNHE, Hanscom Air Force Base, MA, USA; Source Info: Feb2006, Vol. 153 Issue 1, p30; Subject Term: RADAR targets; Subject Term: RAYLEIGH scattering; Subject Term: LIGHT -- Scattering; Subject Term: RADAR; Subject Term: ELECTRONIC systems; Subject Term: DETECTORS; Number of Pages: 5p; Illustrations: 3 Charts, 8 Graphs; Document Type: Article L3 - 10.1049/ip-rsn:20050051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19718653&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anagnostou, Dimitrios E. AU - Guizhen Zheng AU - Chryssomallis, Michael T. AU - Lyke, James C. AU - Ponchak, George E. AU - Papapolymerou, John AU - Christodoulou, Christos G. T1 - Design, fabrication, and measurements of an RF-MEMS-based self-similar reconfigurable antenna. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2006/02//Feb2006 Part 1 VL - 54 IS - 2 M3 - Article SP - 422 EP - 432 SN - 0018926X AB - Reconfigurability in an antenna system is a desired characteristic that has been the focus of much research in recent years. In this work, ohmic contact cantilever RF-MEMS switches are integrated with self-similar planar antennas to provide a reconfigurable antenna system that radiates similar patterns over a wide range of frequencies. The different issues encountered during the integration of the MEMS switches and the overall system design procedure are described herein. The final model radiates at three widely separated frequencies with very similar radiation patterns. The proposed concept can be extended to reconfigurable linear antenna arrays or to more complex antenna structures with large improvements in antenna performance. [ABSTRACT FROM PUBLISHER] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNAS (Electronics) KW - MICROELECTROMECHANICAL systems KW - ANTENNA radiation patterns KW - SILICON KW - RADIO frequency KW - antenna radiation patterns KW - fractal KW - fractals KW - linear antenna array KW - linear antenna arrays KW - microswitches KW - ohmic contact RF-MEMS switch KW - ohmic contacts KW - planar antenna KW - planar antenna arrays KW - radiation pattern KW - reconfigurable antennas KW - RF-MEMS KW - self-similar KW - self-similar reconfigurable antenna KW - Sierpinski KW - silicon N1 - Accession Number: 52037836; Anagnostou, Dimitrios E. 1,2; Email Address: danagn@ieee.org Guizhen Zheng 1,3 Chryssomallis, Michael T. 4,5 Lyke, James C. 4,6 Ponchak, George E. 4,7 Papapolymerou, John 2 Christodoulou, Christos G. 8,9; Affiliation: 1: Member, IEEE 2: Georgia Institute of Technology, Atlanta, GA 30308 USA 3: Intel Corporation, Phoenix, AZ 85044 USA 4: Senior Member, IEEE 5: Democritus University of Thrace, Polytechnic School of Xanthi, Xanthi, 67100, Greece 6: Air Force Research Laboratory, Kirtland AFB, Albuquerque, NM 87117 USA 7: NASA Glenn Research Center, Cleveland, OH 44135 USA 8: Fellow, IEEE 9: University of NewMexico, Albuquerque,NM 87106 USA; Source Info: Feb2006 Part 1, Vol. 54 Issue 2, p422; Subject Term: ANTENNAS (Electronics); Subject Term: MICROELECTROMECHANICAL systems; Subject Term: ANTENNA radiation patterns; Subject Term: SILICON; Subject Term: RADIO frequency; Author-Supplied Keyword: antenna radiation patterns; Author-Supplied Keyword: fractal; Author-Supplied Keyword: fractals; Author-Supplied Keyword: linear antenna array; Author-Supplied Keyword: linear antenna arrays; Author-Supplied Keyword: microswitches; Author-Supplied Keyword: ohmic contact RF-MEMS switch; Author-Supplied Keyword: ohmic contacts; Author-Supplied Keyword: planar antenna; Author-Supplied Keyword: planar antenna arrays; Author-Supplied Keyword: radiation pattern; Author-Supplied Keyword: reconfigurable antennas; Author-Supplied Keyword: RF-MEMS; Author-Supplied Keyword: self-similar; Author-Supplied Keyword: self-similar reconfigurable antenna; Author-Supplied Keyword: Sierpinski; Author-Supplied Keyword: silicon; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 11p; Illustrations: 8 Diagrams, 8 Graphs; Document Type: Article L3 - 10.1109/TAP.2005.863399 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=52037836&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Statom, T. K. T1 - Pulsed CsI-Coated Tufted Carbon Fiber Cathode Plasma. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices Y1 - 2006/02// VL - 53 IS - 2 M3 - Article SP - 386 EP - 391 SN - 00189383 AB - This paper discusses the out-gassing behavior of a repetitively pulsed electron beam diode with a CsI-coated tufted carbon fiber cathode and a carbon fiber anode. Through this paper, a cross section model was developed that utilizes experimental data including pressure, temperature and voltage (energy) for determination. Mass and optical spectroscopy identified neutral and ion species likely responsible for the pressure pulses. The identified neutral and ionization cross sections from the published literature and databases were compared with the experimentally determined cross sections. The types of cross sections were electron-neutral and was single impact leading to single, double and triple ionization as well as elastic scattering. This comparison leads to the conclusion that initial pressure bursts consist of plasma with constituents of Cs, Cs++, Cs+++, I, I++, N2, N2+, H2O+, H, H+, and H2+. Larger pressure bursts after the initial ones also include Cs+ and I+. Smaller bursts observed during steady state operations fluctuate between plasmas that contain H and H+, and those that contain H, H+, and H2+. Consistently, the initial pressure pulses exceeded those found under steady-state operations. The optical spectroscopy timing and results are self-consistent with what is obtained from the cross section model. The cross section model coupled with the experimental data determines the transient plasma makeup responsible for the observed pressure pulses. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON fibers KW - ELECTRON beams KW - DIODES KW - ELECTRONICS KW - MASS spectrometry KW - PLASMA (Ionized gases) KW - Anodes KW - cathodes KW - electron diodes KW - electron tubes N1 - Accession Number: 19935665; Statom, T. K. 1; Affiliation: 1: Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117 USA.; Source Info: Feb2006, Vol. 53 Issue 2, p386; Subject Term: CARBON fibers; Subject Term: ELECTRON beams; Subject Term: DIODES; Subject Term: ELECTRONICS; Subject Term: MASS spectrometry; Subject Term: PLASMA (Ionized gases); Author-Supplied Keyword: Anodes; Author-Supplied Keyword: cathodes; Author-Supplied Keyword: electron diodes; Author-Supplied Keyword: electron tubes; NAICS/Industry Codes: 335991 Carbon and Graphite Product Manufacturing; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TED.2005.862701 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19935665&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kleismit, Richard A. AU - Kazimierczuk, Marian K. AU - Kozlowski, Gregory T1 - Sensitivity and Resolution of Evanescent Microwave Microscope. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques Y1 - 2006/02//Feb2006 Part 1 VL - 54 IS - 2 M3 - Article SP - 639 EP - 647 SN - 00189480 AB - A near-field evanescent microwave microscope is based on a λ/4 coaxial TEM transmission-line resonator with a silver-plated tungsten tip extending through an end-wall aperture. This microwave microscope is used to characterize local electromagnetic properties of dielectrics, conductors, and super-conductors. The resolution of the probe is verified experimentally by scanning etched gold lines on a sapphire substrate. A first-order sensitivity estimation generated from a unified equivalent circuit model of the probe and sample is investigated. The sensitivity inherent to the resonant probe and system noise is discussed. Experimental validation of sensitivity is given. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVE transmission lines KW - RESONATORS KW - SENSITIVITY theory (Mathematics) KW - MICROWAVE antennas KW - ELECTROMAGNETIC fields KW - ELECTRIC apparatus & appliances KW - MICROWAVE devices KW - Complex permittivity KW - evanescent microwave mi- croscopy KW - near-field KW - nondestructive evaluation KW - resolution KW - sensitivity KW - sensor KW - superconductors N1 - Accession Number: 20098477; Kleismit, Richard A. 1,2; Email Address: kleismra@direcway.com Kazimierczuk, Marian K. 3; Email Address: mkazim@cs.wright.edu Kozlowski, Gregory 2,4; Email Address: gregory.kozlowski@wright.edu; Affiliation: 1: Department of Electrical Engineering, Wright State University, Air Force Research Laboratory/Materials and Manufacturing Directorate, Wright-Patterson AFB, Dayton, OH 45431 USA 2: Anteon Corporation, Dayton, 01-I 45431 USA 3: Department of Electrical Engineering, Wright State University, Dayton, OH 45435 USA 4: Physics Department, Wright State University, Dayton, OH 45435 USA; Source Info: Feb2006 Part 1, Vol. 54 Issue 2, p639; Subject Term: MICROWAVE transmission lines; Subject Term: RESONATORS; Subject Term: SENSITIVITY theory (Mathematics); Subject Term: MICROWAVE antennas; Subject Term: ELECTROMAGNETIC fields; Subject Term: ELECTRIC apparatus & appliances; Subject Term: MICROWAVE devices; Author-Supplied Keyword: Complex permittivity; Author-Supplied Keyword: evanescent microwave mi- croscopy; Author-Supplied Keyword: near-field; Author-Supplied Keyword: nondestructive evaluation; Author-Supplied Keyword: resolution; Author-Supplied Keyword: sensitivity; Author-Supplied Keyword: sensor; Author-Supplied Keyword: superconductors; NAICS/Industry Codes: 811412 Appliance Repair and Maintenance; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; NAICS/Industry Codes: 335990 All other electrical equipment and component manufacturing; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; Number of Pages: 9p; Illustrations: 4 Black and White Photographs, 5 Diagrams, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1109/TMTT.2005.862668 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20098477&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sun, Greg AU - Khurgin, Jacob B. AU - Soref, Richard A. T1 - Design of a GaN/AlGaN intersubband Raman laser electrically tunable over the 3–5 μm atmospheric transmission window. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2006/02//2/1/2006 VL - 99 IS - 3 M3 - Article SP - 033103 PB - American Institute of Physics SN - 00218979 AB - Design results aimed at achieving tunable high-temperature operation in the 3–5 μm atmospheric transmission window are presented for the intersubband Raman lasers based on GaN/AlGaN coupled quantum wells. The ultrafast longitudinal-optical-phonon (LO-phonon) scattering in GaN/AlGaN quantum wells (QWs) can be used for the rapid depopulation of the lower laser state, while the large LO-phonon energies (∼90 meV) allow for a design to minimize the thermal population of the lower laser state, and are therefore beneficial for obtaining high-temperature operation. The Raman gain is proportional to the difference between the virtual lifetime of the upper laser state and the effective lifetime of the lower laser state instead of the real lifetimes. The advantage is that these lifetimes can be tuned with the detuning of the pump photon energy from the subband energy separation. At a fixed pumping wavelength of 2.7 μm, the tuning range of 3.6–5.2 μm is predicted with a moderate Raman gain of at least 100/cm as the electric field is varied. Furthermore, the output power of this laser is unlikely to saturate because of the intrinsically short intersubband lifetimes in the GaN-based QWs. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - ATMOSPHERIC radiation KW - RAMAN effect KW - QUANTUM wells KW - ELECTRIC fields KW - ELECTROMAGNETIC fields KW - PHOTONS N1 - Accession Number: 19791271; Sun, Greg 1; Email Address: greg.sun@umb.edu Khurgin, Jacob B. 2 Soref, Richard A. 3; Affiliation: 1: Department of Physics, University of Massachusetts at Boston, Boston, Massachusetts 02125 2: Department of Electrical and Computer Engineering, The Johns Hopkins University, Baltimore, Maryland 21218 3: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 10731; Source Info: 2/1/2006, Vol. 99 Issue 3, p033103; Subject Term: LASERS; Subject Term: ATMOSPHERIC radiation; Subject Term: RAMAN effect; Subject Term: QUANTUM wells; Subject Term: ELECTRIC fields; Subject Term: ELECTROMAGNETIC fields; Subject Term: PHOTONS; Number of Pages: 6p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.2169349 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19791271&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Erlacher, A. AU - Ullrich, B. AU - Komarova, E.Y. AU - Jaeger, H. AU - Haugan, H.J. AU - Brown, G.J. T1 - Texture and surface analysis of thin-film GaAs on glass formed by pulsed-laser deposition JO - Journal of Non-Crystalline Solids JF - Journal of Non-Crystalline Solids Y1 - 2006/02// VL - 352 IS - 2 M3 - Article SP - 193 EP - 196 SN - 00223093 AB - Abstract: Thin-film GaAs on glass was formed by ablating n-type GaAs with nano-second pulses at 532nm. The deposition was done in the most straightforward way without heating the substrate. The texture of films has been investigated with X-ray measurements, spatially resolved micro-Raman spectroscopy, and atomic force microscopy. The results reveal that the film texture is of multi-phase nature consisting of randomly oriented GaAs microcrystallites, amorphous parts, and (111) zincblende migrations in the nano-regime. [Copyright &y& Elsevier] AB - Copyright of Journal of Non-Crystalline Solids is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRUM analysis KW - SURFACE chemistry KW - CRYSTALLOGRAPHY KW - RAMAN spectroscopy KW - Amorphous semiconductors KW - Atomic force and scanning tunneling microscopy KW - III–V semiconductors X-ray diffraction KW - Laser deposition KW - Microcrystallinity KW - Optical spectroscopy KW - Raman spectroscopy KW - Surfaces and interfaces KW - X-ray diffraction N1 - Accession Number: 19397499; Erlacher, A. 1; Email Address: erlacher@kottan-labs.bgsu.edu Ullrich, B. 1 Komarova, E.Y. 2 Jaeger, H. 3 Haugan, H.J. 4 Brown, G.J. 4; Affiliation: 1: Centers for Materials and Photochemical Sciences, Department of Physics and Astronomy, Bowling Green State University, Bowling Green, OH 43403-0224, United States 2: Fractal Systems Inc., Safety Harbor, FL 34695, United States 3: Department of Physics, Miami University, Oxford, OH 45056, United States 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLPS, Wright-Patterson AFB, OH 45433-7707, United States; Source Info: Feb2006, Vol. 352 Issue 2, p193; Subject Term: SPECTRUM analysis; Subject Term: SURFACE chemistry; Subject Term: CRYSTALLOGRAPHY; Subject Term: RAMAN spectroscopy; Author-Supplied Keyword: Amorphous semiconductors; Author-Supplied Keyword: Atomic force and scanning tunneling microscopy; Author-Supplied Keyword: III–V semiconductors X-ray diffraction; Author-Supplied Keyword: Laser deposition; Author-Supplied Keyword: Microcrystallinity; Author-Supplied Keyword: Optical spectroscopy; Author-Supplied Keyword: Raman spectroscopy; Author-Supplied Keyword: Surfaces and interfaces; Author-Supplied Keyword: X-ray diffraction; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jnoncrysol.2005.10.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19397499&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Doan, Brandon K. AU - Newton, Robert U. AU - Young-Hoo Kwon AU - Kraemer, William J. T1 - EFFECTS OF PHYSICAL CONDITIONING ON INTERCOLLEGIATE GOLFER PERFORMANCE. JO - Journal of Strength & Conditioning Research (Allen Press Publishing Services Inc.) JF - Journal of Strength & Conditioning Research (Allen Press Publishing Services Inc.) Y1 - 2006/02// VL - 20 IS - 1 M3 - Article SP - 62 EP - 72 SN - 10648011 AB - This investigation was conducted to determine the effects of a physical conditioning program on clubhead speed, consistency, and putting distance control in 10 men and 6 women National Collegiate Athletic Association Division I golfers. Supervised strength, power, and flexibility training was performed 3 times per week for 11 weeks. Performance tests were conducted before and after the training period. Significant (p < 0.05) increases were noted for all strength, power, and flexibility tests from pre- to posttraining of between 7.3 and 19.9%. Clubhead speed in- creased significantly (1.6%), equating to approximately a 4.9-m increase in driving distance. Putting distance control significantly improved for the men-only group (29.6%), whereas there was no significant difference in putting distance control for the total and women-only groups. Eleven weeks of golf-specific physical conditioning increased clubhead speed without a negative effect on consistency or putting distance control in intercollegiate men and women golfers. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Strength & Conditioning Research (Allen Press Publishing Services Inc.) is the property of Allen Press Publishing Services Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GOLFERS KW - ATHLETES KW - GOLF techniques KW - GOLF -- Training KW - COLLEGE sports KW - PHYSIOLOGY KW - MUSCLE strength KW - PHYSICAL fitness KW - ASSOCIATIONS, institutions, etc. KW - clubhead speed KW - exercise KW - sport-specific conditioning N1 - Accession Number: 20195088; Doan, Brandon K. 1; Email Address: Brandon.Doan@usafa.af.mil Newton, Robert U. 2 Young-Hoo Kwon 3 Kraemer, William J. 4; Affiliation: 1: Human Performance Laboratory, HQ USAFA/AHML, US. Air Force Academy, Colorado 80840 2: School of Biomedical and Sports Science, Edith Cowan University, Joondalup, Western Australia 3: The Biomechanics Laboratory, Texas Women's University, Denton, Texas 76204 4: Human Performance Laboratory, Department of Kinesiology, University of Connecticut, Storrs, Connecticut 06269; Source Info: Feb2006, Vol. 20 Issue 1, p62; Subject Term: GOLFERS; Subject Term: ATHLETES; Subject Term: GOLF techniques; Subject Term: GOLF -- Training; Subject Term: COLLEGE sports; Subject Term: PHYSIOLOGY; Subject Term: MUSCLE strength; Subject Term: PHYSICAL fitness; Subject Term: ASSOCIATIONS, institutions, etc.; Author-Supplied Keyword: clubhead speed; Author-Supplied Keyword: exercise; Author-Supplied Keyword: sport-specific conditioning; NAICS/Industry Codes: 813990 Other Similar Organizations (except Business, Professional, Labor, and Political Organizations); NAICS/Industry Codes: 711219 Other Spectator Sports; NAICS/Industry Codes: 711218 Other spectator sports; NAICS/Industry Codes: 713940 Fitness and Recreational Sports Centers; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20195088&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hansen, Thorkild B. T1 - Probe-corrected near-field measurements on a truncated cylinder. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2006/02// VL - 119 IS - 2 M3 - Article SP - 792 EP - 807 SN - 00014966 AB - A probe-corrected theory is presented for computing the acoustic far fields of transducers and scatterers from measurements of near fields on a cylindrical surface. The near-field data is truncated at the top, bottom, and angular edges of the scan cylinder. These truncation edges can cause inaccuracies in the computed far fields. Correction techniques are developed for the top and bottom truncation edges. The cylindrical wave expansions automatically apply an angular taper to the near-field data that reduces the effect of the angular truncation edges. The taper function depends on the probe and the angular sample spacing. The theory is validated through numerical examples involving a point source and a baffled piston transducer probe. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEAR-fields KW - ACOUSTICAL engineering KW - WAVES (Physics) KW - ANGULAR momentum (Mechanics) KW - TRANSDUCERS N1 - Accession Number: 20263779; Hansen, Thorkild B. 1; Email Address: Thorkild.Hansen@att.net; Affiliation: 1: Consultant, Air Force Research Laboratory (SNHE), Hanscom AFB, Massachusetts 01731; Source Info: Feb2006, Vol. 119 Issue 2, p792; Subject Term: NEAR-fields; Subject Term: ACOUSTICAL engineering; Subject Term: WAVES (Physics); Subject Term: ANGULAR momentum (Mechanics); Subject Term: TRANSDUCERS; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; Number of Pages: 16p; Illustrations: 3 Diagrams, 1 Chart, 10 Graphs; Document Type: Article L3 - 10.1121/1.2151789 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20263779&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Subrata AU - Gaitonde, Datta V. T1 - Force interaction of high pressure glow discharge with fluid flow for active separation control. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2006/02// VL - 13 IS - 2 M3 - Article SP - 023503 PB - American Institute of Physics SN - 1070664X AB - Radio frequency based discharges at atmospheric pressures are the focus of increased interest in aerodynamics because of the wide range of potential applications including, specifically, actuation in flows at moderate speeds. Recent literature describing promising experimental observations, especially on separation control, has spurred efforts in the development of parallel theoretical modeling to lift limitations in the current understanding of the actuation mechanism. The present effort demonstrates higher fidelity first-principle models in a multidimensional finite-element framework to predict surface discharge-induced momentum exchange. The complete problem of a dielectric barrier discharge at high pressure with axially displaced electrodes is simulated in a self-consistent manner. Model predictions for charge densities, the electric field, and gas velocity distributions are shown to mimic trends reported in the experimental literature. Results show that a residual of electrons remains deposited on the dielectric surface downstream of the exposed powered electrode for the entire duration of the cycle and causes a net electric force in the direction from the electrode to the downstream surface. For the first time, results document the mitigation process of a separation bubble formed due to flow past a flat plate inclined at 12° angle of attack. This effort sets the basis for extending the formulation further to include polyphase power input in multidimensional settings, and to apply the simulation method to flows past common aerodynamic configurations. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GLOW discharges KW - RADIO frequency KW - ELECTRIC fields KW - SURFACE discharges (Electricity) KW - ELECTRODES KW - AERODYNAMICS N1 - Accession Number: 19933469; Roy, Subrata 1; Email Address: sroy@kettering.edu Gaitonde, Datta V. 2; Affiliation: 1: Computational Plasma Dynamics Laboratory, Mechanical Engineering, Kettering University, Flint, Michigan 48504 2: Computational Sciences Branch, Air Vehicles Directorate, Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433; Source Info: Feb2006, Vol. 13 Issue 2, p023503; Subject Term: GLOW discharges; Subject Term: RADIO frequency; Subject Term: ELECTRIC fields; Subject Term: SURFACE discharges (Electricity); Subject Term: ELECTRODES; Subject Term: AERODYNAMICS; Number of Pages: 11p; Illustrations: 12 Graphs; Document Type: Article L3 - 10.1063/1.2168404 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19933469&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, X. AU - Ma, N. AU - Bliss, D.F. AU - Iseler, G.W. AU - Becla, P. T1 - Comparing modified vertical gradient freezing with rotating magnetic fields or with steady magnetic and electric fields JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2006/01/25/ VL - 287 IS - 2 M3 - Article SP - 270 EP - 274 SN - 00220248 AB - Abstract: This investigation treats the flow of molten gallium-antimonide and the dopant transport during the vertical gradient freezing process using submerged heater growth. A rotating magnetic field or a combination of steady magnetic and steady electric fields is used to control the melt motion. This paper compares the effects of these externally applied fields on the transport in the melt and on the dopant segregation in the crystal. Crystal growth in a combination of steady magnetic and electric fields produces a crystal with more radial and axial dopant homogeneity than growth in a rotating magnetic field. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM compounds KW - MAGNETIC fields KW - CRYSTAL growth KW - CRYSTAL grain boundaries KW - A1. Fluid flows KW - A1. Magnetic fields KW - A1. Segregation KW - A2. Growth from melt KW - A2. VGF technique N1 - Accession Number: 19410679; Wang, X. 1 Ma, N. 1; Email Address: nancy_ma@ncsu.edu Bliss, D.F. 2 Iseler, G.W. 3 Becla, P. 4; Affiliation: 1: Department of Mechanical and Aerospace Engineering, North Carolina State University, Campus Box 7910, Raleigh, NC 27695, USA 2: US Air Force Research Laboratory, AFRL/SNHC, 80 Scott Road, Hanscom AFB, MA 01731, USA 3: Iseler Associates, 26 State Street, Chelmsford, MA 01824, USA 4: Solid State Scientific, 27-2 Wright Road, Hollis, NH 03049, USA; Source Info: Jan2006, Vol. 287 Issue 2, p270; Subject Term: GALLIUM compounds; Subject Term: MAGNETIC fields; Subject Term: CRYSTAL growth; Subject Term: CRYSTAL grain boundaries; Author-Supplied Keyword: A1. Fluid flows; Author-Supplied Keyword: A1. Magnetic fields; Author-Supplied Keyword: A1. Segregation; Author-Supplied Keyword: A2. Growth from melt; Author-Supplied Keyword: A2. VGF technique; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jcrysgro.2005.11.036 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19410679&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Raghothamachar, Balaji AU - Bai, Jie AU - Dudley, Michael AU - Dalmau, Rafael AU - Zhuang, Dejin AU - Herro, Ziad AU - Schlesser, Raoul AU - Sitar, Zlatko AU - Wang, Buguo AU - Callahan, Michael AU - Rakes, Kelly AU - Konkapaka, Phanikumar AU - Spencer, Michael T1 - Characterization of bulk grown GaN and AlN single crystal materials JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2006/01/25/ VL - 287 IS - 2 M3 - Article SP - 349 EP - 353 SN - 00220248 AB - Abstract: Sublimation method, spontaneously nucleated as well as seeded on SiC substrates, has been employed for growing AlN bulk crystals. For GaN growth, in addition to the sublimation method using sapphire substrates, ammonothermal growth (analogous to the hydrothermal method) on HVPE GaN seeds is also being used. Thick plates/films of AlN and GaN grown by these methods have been characterized by synchrotron white beam X-ray topography (SWBXT) and high resolution X-ray diffraction (HRXRD). Results from a recent set of growth experiments are discussed. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL growth KW - CRYSTALLIZATION KW - SYNCHROTRONS KW - OPTICAL diffraction KW - 61.72.Ff KW - A1. Defects KW - A1. High resolution X-ray diffraction KW - A1. X-ray topography KW - A2. Single crystal growth KW - B1. Aluminum nitride KW - B1. Gallium nitride N1 - Accession Number: 19410696; Raghothamachar, Balaji 1; Email Address: braghoth@notes.cc.sunysb.edu Bai, Jie 1 Dudley, Michael 1 Dalmau, Rafael 2 Zhuang, Dejin 2 Herro, Ziad 2 Schlesser, Raoul 2 Sitar, Zlatko 2 Wang, Buguo 3 Callahan, Michael 4 Rakes, Kelly 4 Konkapaka, Phanikumar 5 Spencer, Michael 5; Affiliation: 1: Department of Materials Science & Engineering, State University of New York, Old Eng Rm 311, Stony Brook, NY 11794-2275, USA 2: Department of Materials Science & Engineering, North Carolina State University, Raleigh, NC 27695-7907, USA 3: Solid State Scientific Corporation, Hollis, NH 03049, USA 4: Air Force Research Laboratory, Hanscom AFB, MA 01731, USA 5: Department of Electrical & Computer Engineering, Cornell University, NY 14850, USA; Source Info: Jan2006, Vol. 287 Issue 2, p349; Subject Term: CRYSTAL growth; Subject Term: CRYSTALLIZATION; Subject Term: SYNCHROTRONS; Subject Term: OPTICAL diffraction; Author-Supplied Keyword: 61.72.Ff; Author-Supplied Keyword: A1. Defects; Author-Supplied Keyword: A1. High resolution X-ray diffraction; Author-Supplied Keyword: A1. X-ray topography; Author-Supplied Keyword: A2. Single crystal growth; Author-Supplied Keyword: B1. Aluminum nitride; Author-Supplied Keyword: B1. Gallium nitride; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jcrysgro.2005.11.042 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19410696&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Buguo AU - Callahan, M.J. AU - Rakes, K.D. AU - Bouthillette, L.O. AU - Wang, S.-Q. AU - Bliss, D.F. AU - Kolis, J.W. T1 - Ammonothermal growth of GaN crystals in alkaline solutions JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2006/01/25/ VL - 287 IS - 2 M3 - Article SP - 376 EP - 380 SN - 00220248 AB - Abstract: A method for the growth of GaN bulk crystals under ammonothermal conditions is described. Gallium nitride is shown to have a retrograde solubility in ammonobasic solutions. Using polycrystalline GaN as nutrient and hydride vapor phase epitaxy GaN templates as seeds, the crystals were grown in the hot zone. The ammonothermal growth experiments were carried out in ammonobasic solutions in high nickel content autoclaves for up to 3 weeks. Growth rates up to 50μm/day were achieved and single crystals of GaN up to 10×10×1mm3 were obtained. The ammonothermal crystals are of high quality, as characterized by optical microscopy, scanning electron microscopy, high-resolution X-ray diffraction and photoluminescence measurements. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL growth KW - POLYCRYSTALS KW - CRYSTAL grain boundaries KW - CRYSTALS KW - A1. Retrograde solubility KW - A2. Bulk crystal growth KW - A2. The ammonothermal technique KW - B1. GaN KW - B2. Characterization N1 - Accession Number: 19410702; Wang, Buguo 1; Email Address: buguo@solidstatescientific.com Callahan, M.J. 2 Rakes, K.D. 2 Bouthillette, L.O. 2 Wang, S.-Q. 1 Bliss, D.F. 2 Kolis, J.W. 3; Affiliation: 1: Solid State Scientific Corporation, 27-2 Wright Road, Hollis, NH 03049, USA 2: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA 3: Department of Chemistry, Clemson University, SC 29634, USA; Source Info: Jan2006, Vol. 287 Issue 2, p376; Subject Term: CRYSTAL growth; Subject Term: POLYCRYSTALS; Subject Term: CRYSTAL grain boundaries; Subject Term: CRYSTALS; Author-Supplied Keyword: A1. Retrograde solubility; Author-Supplied Keyword: A2. Bulk crystal growth; Author-Supplied Keyword: A2. The ammonothermal technique; Author-Supplied Keyword: B1. GaN; Author-Supplied Keyword: B2. Characterization; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jcrysgro.2005.11.048 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19410702&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Buguo AU - Callahan, M.J. AU - Bouthillette, L.O. AU - Xu, Chunchuan AU - Suscavage, M.J. T1 - Hydrothermal growth and characterization of nitrogen-doped ZnO crystals JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2006/01/25/ VL - 287 IS - 2 M3 - Article SP - 381 EP - 385 SN - 00220248 AB - Abstract: Hydrothermal growth of nitrogen-doped ZnO crystals was performed in alkaline solutions with the addition of 1N LiNO3 at , and in a 20% NH4OH solution at 490°C/475°C, respectively. An average nitrogen concentration of approximately 1018 atom/cm3 was incorporated in the crystals. X-ray diffraction showed that the crystals grown from the 1M LiNO3 solution are of high quality, exhibiting high resistivity. The spontaneously nucleated crystals were obtained from the NH4OH solution; a weak peak at 3.236eV and a peak at 3.332eV of photoluminescence were found at 18K from these crystals after annealing at 600°C for 2h. The emission peaks correspond to the nitrogen-associated donor–acceptor pair (DAP) and electron-acceptor emissions in ZnO:N prepared by other techniques reported in the literature. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALLOGRAPHY KW - ZINC oxide KW - NONMETALS KW - CRYSTALS KW - A1. Nitrogen-doped ZnO KW - A1. p-Type KW - A2. Hydrothermal growth KW - B3. Hall measurements KW - B3. Photoluminescence N1 - Accession Number: 19410703; Wang, Buguo 1; Email Address: buguo@solidstatescientific.com Callahan, M.J. 2 Bouthillette, L.O. 2 Xu, Chunchuan 3 Suscavage, M.J. 2; Affiliation: 1: Solid State Scientific Corporation, 27-2 Wright Road, Hollis, NH 03049, USA 2: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA 3: Department of Physics, West Virginia University, Morgantown, WV 26506, USA; Source Info: Jan2006, Vol. 287 Issue 2, p381; Subject Term: CRYSTALLOGRAPHY; Subject Term: ZINC oxide; Subject Term: NONMETALS; Subject Term: CRYSTALS; Author-Supplied Keyword: A1. Nitrogen-doped ZnO; Author-Supplied Keyword: A1. p-Type; Author-Supplied Keyword: A2. Hydrothermal growth; Author-Supplied Keyword: B3. Hall measurements; Author-Supplied Keyword: B3. Photoluminescence; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jcrysgro.2005.11.049 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19410703&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Van Nostrand, J.E. AU - Averett, K.L. AU - Cortez, R. AU - Boeckl, J. AU - Stutz, C.E. AU - Sanford, N.A. AU - Davydov, A.V. AU - Albrecht, J.D. T1 - Molecular beam epitaxial growth of high-quality GaN nanocolumns JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2006/01/25/ VL - 287 IS - 2 M3 - Article SP - 500 EP - 503 SN - 00220248 AB - Abstract: Vertically oriented gallium nitride (GaN) nanocolumns (NCs) approximately wide and tall were grown by plasma-assisted molecular beam epitaxy on and . The dense packing of the NCs gives them the appearance of a continuous film in surface view, but cross-sectional analysis shows them to be isolated nanostructures. Low-temperature photoluminescence measurements of NCs show excitonic emission with a dominant, narrow peak centered at and FWHM of . This peak is identified as the ground state of the A free exciton as confirmed by reflection measurements. Cross-sectional transmission electron microscopy identifies the NC microstructure as wurtzite GaN and that the NCs are largely free of defects. The GaN NCs are subsequently utilized as a defect-free vehicle for optical studies of Si-doped GaN; and the donor state was identified through low-temperature photoluminescence experiments. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - CRYSTAL growth KW - CRYSTAL grain boundaries KW - EPITAXY KW - A1. GaN photoluminescence KW - A1. Transmission electron microscopy KW - B1. GaN nanocolumns N1 - Accession Number: 19410728; Van Nostrand, J.E. 1; Email Address: Joseph.VanNostrand@wpafb.af.mil Averett, K.L. 1 Cortez, R. 2 Boeckl, J. 1 Stutz, C.E. 1 Sanford, N.A. 3 Davydov, A.V. 4 Albrecht, J.D. 2; Affiliation: 1: Air Force Research Laboratory, Materials Directorate, WPAFB, OH, USA 2: Air Force Research Laboratory, Sensors Directorate, WPAFB, OH, USA 3: National Institute of Standards and Technology, Boulder, CO, USA 4: National Institute of Standards and Technology, Gaithersburg, MD, USA; Source Info: Jan2006, Vol. 287 Issue 2, p500; Subject Term: GALLIUM nitride; Subject Term: CRYSTAL growth; Subject Term: CRYSTAL grain boundaries; Subject Term: EPITAXY; Author-Supplied Keyword: A1. GaN photoluminescence; Author-Supplied Keyword: A1. Transmission electron microscopy; Author-Supplied Keyword: B1. GaN nanocolumns; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.jcrysgro.2005.11.073 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19410728&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bliss, D.F. AU - Lynch, C. AU - Weyburne, D. AU - O’Hearn, K. AU - Bailey, J.S. T1 - Epitaxial growth of thick GaAs on orientation-patterned wafers for nonlinear optical applications JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2006/01/25/ VL - 287 IS - 2 M3 - Article SP - 673 EP - 678 SN - 00220248 AB - Abstract: A method for growing thick epitaxial layers of GaAs on orientation-patterned wafers by low-pressure hydride vapor phase epitaxy is described. For nonlinear optical applications, it is necessary to grow very thick gratings to accommodate the pump laser as it enters through the side and propagates across the patterned layer. The low-pressure method allows for rapid growth at rates well above 100μm/h on wafers with patterned stripes having 30–500μm widths. Parasitic deposition of GaAs on the reactor walls upstream of the sample can reduce the growth rate significantly after a few hours. Various techniques are described for eliminating the parasitic growth. Layers over 500μm thick have been successfully produced during 8h of growth. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL growth KW - GALLIUM arsenide KW - SEMICONDUCTORS KW - ARSENIDES KW - A1. Hydride vapor phase epitaxy KW - B2. Gallium arsenide N1 - Accession Number: 19410766; Bliss, D.F. 1; Email Address: david.bliss@hanscom.af.mil Lynch, C. 1 Weyburne, D. 1 O’Hearn, K. 2 Bailey, J.S. 2; Affiliation: 1: Air Force Research Laboratory, Hanscom AFB, MA 01731, USA 2: Solid State Scientific Corporation, Hollis, NH 03049, USA; Source Info: Jan2006, Vol. 287 Issue 2, p673; Subject Term: CRYSTAL growth; Subject Term: GALLIUM arsenide; Subject Term: SEMICONDUCTORS; Subject Term: ARSENIDES; Author-Supplied Keyword: A1. Hydride vapor phase epitaxy; Author-Supplied Keyword: B2. Gallium arsenide; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jcrysgro.2005.10.140 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19410766&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kaspi, R. AU - Ongstad, A. P. AU - Dente, G. C. AU - Chavez, J. R. AU - Tilton, M. L. AU - Gianardi, D. M. T1 - High performance optically pumped antimonide lasers operating in the 2.4–9.3 μm wavelength range. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/01/23/ VL - 88 IS - 4 M3 - Article SP - 041122 PB - American Institute of Physics SN - 00036951 AB - We provide an update on the further development of optically pumped semiconductor lasers based on the InAs/InGaSb/InAs type-II quantum wells. We show increased power generation, as well as the inherent flexibility to produce devices that can emit at any wavelength in the ∼2.4 μm to ∼9.3 μm range with consistently high photon-to-photon conversion rates. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR lasers KW - LASERS KW - LIGHT sources KW - OPTOELECTRONIC devices KW - QUANTUM wells KW - ENERGY-band theory of solids KW - POTENTIAL theory (Physics) N1 - Accession Number: 19668228; Kaspi, R. 1; Email Address: ron.kaspi@kirtland.af.mil Ongstad, A. P. 1 Dente, G. C. 2 Chavez, J. R. 2 Tilton, M. L. 2 Gianardi, D. M. 2; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Advanced Tactical Systems Branch AFRL/DELS, Kirtland AFB, Albuquerque, New Mexico 87117 2: Boeing Defense and Space Group, Albuquerque, New Mexico 87106; Source Info: 1/23/2006, Vol. 88 Issue 4, p041122; Subject Term: SEMICONDUCTOR lasers; Subject Term: LASERS; Subject Term: LIGHT sources; Subject Term: OPTOELECTRONIC devices; Subject Term: QUANTUM wells; Subject Term: ENERGY-band theory of solids; Subject Term: POTENTIAL theory (Physics); NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1063/1.2170423 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19668228&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ziegler, A. AU - Idrobo, J. C. AU - Cinibulk, M. K. AU - Kisielowski, C. AU - Browning, N. D. AU - Ritchie, R. O. T1 - Atomic-resolution observations of semicrystalline intergranular thin films in silicon nitride. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/01/23/ VL - 88 IS - 4 M3 - Article SP - 041919 PB - American Institute of Physics SN - 00036951 AB - Nanoscale intergranular films in doped silicon-nitride ceramics are known to markedly affect toughness and creep resistance. They are regarded as being fully amorphous, but are shown here to have a semicrystalline structure in a Ce-doped Si3N4. Using two different but complementary high-resolution electron-microscopy methods, the intergranular atomic structure, imaged with sub-angstrom resolution, reveals that segregated cerium ions take very periodic positions, along the intergranular-phase/matrix-grain interface and as a semicrystalline structure spanning the width of the intergranular phase. This result has broad implications for the understanding of the structure and role of the intergranular phase in enhancing the mechanical properties of ceramics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - SOLID state electronics KW - SILICON nitride KW - ATOMIC structure KW - ATOMIC theory KW - HIGH resolution electron microscopy KW - ELECTRON microscopy N1 - Accession Number: 19668251; Ziegler, A. 1,2 Idrobo, J. C. 3 Cinibulk, M. K. 4 Kisielowski, C. 5 Browning, N. D. 5,6 Ritchie, R. O. 1,7; Email Address: roritchie@lbl.gov; Affiliation: 1: Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 2: Chemistry and Materials Science Directorate, Lawrence Livermore National Laboratory, Livermore, California 94551 3: Physics Department, University of California, Davis, California 95616 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 5: National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, Berkeley, California 94720 6: Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616 7: Department of Materials Science and Engineering, University of California, Berkeley, California 94720; Source Info: 1/23/2006, Vol. 88 Issue 4, p041919; Subject Term: THIN films; Subject Term: SOLID state electronics; Subject Term: SILICON nitride; Subject Term: ATOMIC structure; Subject Term: ATOMIC theory; Subject Term: HIGH resolution electron microscopy; Subject Term: ELECTRON microscopy; Number of Pages: 3p; Illustrations: 2 Black and White Photographs; Document Type: Article L3 - 10.1063/1.2168021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19668251&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Demiryont, Hulya AU - Shannon III, Kenneth AU - Ponnappan, Rengasamy T1 - Electrochromic Devices for Satellite Thermal Control. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/01/20/ VL - 813 IS - 1 M3 - Article SP - 64 EP - 73 PB - American Institute of Physics SN - 0094243X AB - This paper gives information regarding a new solid-state thin film electrochromic device (ECD) designed for IR emissivity modulation. The variable emissive properties make the new ECD an ideal spacecraft antenna thermal management system. Specific attention is focused on a new electrochromic system (an Eclipse Energy Systems, Inc. proprietary technology) designed for the infrared (IR) spectral region. Reflectance modulation of the new IR-ECD system for the 4.2 to 27 micron region is about 60%. In non-absorbing mode, the IR-ECD system exhibits a 90% flat IR reflectance spectrum (0.1 emissivity). Upon the application of a 1.6V D.C. voltage (top electrode negative), the device is switched to absorbing mode and the emissivity is increased to up to 0.98 value. The IR-ECD system switches back to its maximum reflectance condition upon the application of a 0.6V reverse voltage. The IR-ECD can be used as a smart thermal modulator for the thermal control of satellites and spacecraft by controlling the amount of energy emitted from surfaces. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - SOLID state electronics KW - ELECTROCHROMIC devices KW - SPACE vehicles KW - SOLAR radiation KW - ELECTROMAGNETIC waves KW - Electrochromic KW - heat dissipation KW - IR-ECD KW - satellite KW - smart thermal modulator KW - spacecraft KW - thermal control KW - variable emissivity N1 - Accession Number: 19564556; Demiryont, Hulya 1; Email Address: hdemiryont@eclipsethinfilms.com Shannon III, Kenneth 1 Ponnappan, Rengasamy 2; Affiliation: 1: Eclipse Energy Systems, Inc., 2345 Anvil Street North, St. Petersburg, FL 33710, USA 2: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: 2006, Vol. 813 Issue 1, p64; Subject Term: THIN films; Subject Term: SOLID state electronics; Subject Term: ELECTROCHROMIC devices; Subject Term: SPACE vehicles; Subject Term: SOLAR radiation; Subject Term: ELECTROMAGNETIC waves; Author-Supplied Keyword: Electrochromic; Author-Supplied Keyword: heat dissipation; Author-Supplied Keyword: IR-ECD; Author-Supplied Keyword: satellite; Author-Supplied Keyword: smart thermal modulator; Author-Supplied Keyword: spacecraft; Author-Supplied Keyword: thermal control; Author-Supplied Keyword: variable emissivity; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 10p; Illustrations: 4 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.2169181 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19564556&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Selvam, R. Panneer AU - Sarkar, Mita AU - Sarkar, Suranjan AU - Ponnappan, Rengasamy T1 - Effect of Vapor Bubble Size on Heat Transfer in Spray Cooling. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/01/20/ VL - 813 IS - 1 M3 - Article SP - 145 EP - 152 PB - American Institute of Physics SN - 0094243X AB - Numerical modeling of multiphase flow using level set method is discussed. The 2-D model considers the effects of surface tension between liquid and vapor, gravity, phase change and viscosity. The two-phase flow modeling is done using the level set method to identify the interface of vapor and liquid. The modifications done to the incompressible Navier-Stokes equations in order to consider effects of surface tension, gravity and phase change are discussed in detail. The governing equations are solved using finite difference method. Recently, the effect of droplet velocity and density ratio on heat removal in a thin liquid film is investigated using the model. In the present work, a further investigation on the effect of vapor bubble size is investigated for the case of a thin liquid film of 44 μm in removing the heat when a liquid spray droplet is impacting. For different vapor bubble sizes the amount of heat removed is plotted in terms of average Nusselt number on the heated plate. The computed liquid and vapor interface is also visualized for better understanding of the heat removal. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT transfer KW - MULTIPHASE flow KW - FLUID dynamics KW - FLUID mechanics KW - LEVEL set methods KW - THIN films KW - Heat transfer KW - Level set function KW - Multiphase flow KW - Spray cooling N1 - Accession Number: 19564547; Selvam, R. Panneer 1; Email Address: rps@engr.uark.edu Sarkar, Mita 1 Sarkar, Suranjan 1 Ponnappan, Rengasamy 2; Affiliation: 1: Bell 4190 University of Arkansas, Fayetteville, AR 72701 2: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, OH 45433-7251; Source Info: 2006, Vol. 813 Issue 1, p145; Subject Term: HEAT transfer; Subject Term: MULTIPHASE flow; Subject Term: FLUID dynamics; Subject Term: FLUID mechanics; Subject Term: LEVEL set methods; Subject Term: THIN films; Author-Supplied Keyword: Heat transfer; Author-Supplied Keyword: Level set function; Author-Supplied Keyword: Multiphase flow; Author-Supplied Keyword: Spray cooling; Number of Pages: 8p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.2169190 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19564547&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adams, Steven F. T1 - Solar Thermionic Space Power Technology Testing: A Historical Perspective. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2006/01/20/ VL - 813 IS - 1 M3 - Article SP - 590 EP - 597 PB - American Institute of Physics SN - 0094243X AB - This paper provides a brief overview of both the past and recent efforts aimed at the development and testing of solar thermionic space power systems. Recently, the Air Force has been investigating the feasibility of developing a thermionic generator, heated with a large inflatable solar concentrator, for orbital space power missions with electrical power requirements that exceed 50 kWe. This concept analysis follows a similar study by the NASA Jet Propulsion Laboratory in the 1960’s where the objective was a 500 We power generator for interplanetary probes. Details of the potential missions, system designs, and power specifications, as well as results of ground tests and demonstrations are detailed and compared for each era. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMIONIC converters KW - SPACE vehicles -- Solar engines -- Collectors KW - SOLAR concentrators KW - DIRECT energy conversion KW - SOLAR collectors KW - SOLAR energy KW - UNITED States KW - Solar Concentrator KW - Solar Power KW - Thermionic Generator KW - UNITED States. National Aeronautics & Space Administration N1 - Accession Number: 19564498; Adams, Steven F. 1; Email Address: steven.adams@wpafb.af.mil; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, 1950 Fifth St, Wright Patterson AFB, OH; Source Info: 2006, Vol. 813 Issue 1, p590; Subject Term: THERMIONIC converters; Subject Term: SPACE vehicles -- Solar engines -- Collectors; Subject Term: SOLAR concentrators; Subject Term: DIRECT energy conversion; Subject Term: SOLAR collectors; Subject Term: SOLAR energy; Subject Term: UNITED States; Author-Supplied Keyword: Solar Concentrator; Author-Supplied Keyword: Solar Power; Author-Supplied Keyword: Thermionic Generator; Company/Entity: UNITED States. National Aeronautics & Space Administration; NAICS/Industry Codes: 221114 Solar Electric Power Generation; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 8p; Illustrations: 2 Black and White Photographs, 4 Diagrams, 1 Chart; Document Type: Article L3 - 10.1063/1.2169239 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19564498&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Claflin, B. AU - Look, D.C. AU - Park, S.J. AU - Cantwell, G. T1 - Persistent n-type photoconductivity in p-type ZnO JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2006/01/18/ VL - 287 IS - 1 M3 - Article SP - 16 EP - 22 SN - 00220248 AB - Abstract: Research activity on ZnO has increased over the past few years, with particular interest in potential electronic and optical device applications such as transparent field-effect transistors (FETs) and light-emitting diodes (LEDs). High-quality bulk and epitaxial samples have been prepared using a variety of growth techniques; however, progress on ZnO-based devices has been limited by the lack of reliable and reproducible p-type doping. Unintentionally doped ZnO films usually exhibit n-type conduction, generally attributed to interstitial H or Zn, oxygen vacancies, or substitutional impurities such as AlZn serving as shallow donors. Recent efforts have demonstrated p-type conduction using N, P, As and Sb as acceptor dopants, with hole concentrations as high as 1019 cm−3. In this work, the electrical properties of N- and P-doped p-type ZnO are characterized by temperature-dependent Hall-effects and photo-Hall-effects. An MBE-grown ZnO:N homoepitaxial layer exhibits weak p-type conduction with an acceptor energy E A≈90meV in the dark and n-type photoconduction with a peak electron mobility at low temperature μ n>850cm2/Vs under blue/UV light. This n-type photoconductivity persists for days when the sample is maintained in the dark, under vacuum, at room temperature. A sputtered ZnO:P film shows degenerate p-type conduction with p≈4×1018 cm−3 and a hole mobility μ p≈3cm2/Vs in the dark at room temperature. Under blue/UV light exposure, this P-doped sample undergoes a classic-mixed conduction transition from p-type to n-type where the carrier concentration exhibits a singularity, the Hall mobility (μ H) goes to zero and both change sign as the temperature is increased. However, the n-type photoconductivity persists and no transition from n- back to p-type is observed upon subsequent cooling. Sequential, 400K anneals with the sample in the dark and under vacuum cause the mixed conduction transition to reappear and shift to progressively higher temperatures, ultimately returning the sample to its original p-type state. A surface-layer model provides qualitative agreement with the observed behavior. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide KW - PHOTOCONDUCTIVITY KW - SEMICONDUCTORS KW - ELECTRIC conductivity KW - 71.55.Gs KW - 72.40.+w KW - 72.80.Ey KW - 73.50.Pz KW - A1. Mixed conduction KW - A1. Persistent photoconductivity (ppc) KW - A1. Photo-Hall-effect KW - B1. p-type ZnO KW - B1. Zinc oxide KW - B2. Semiconducting II–VI materials N1 - Accession Number: 19357808; Claflin, B. 1,2; Email Address: bruce.claflin@wpafb.af.mil Look, D.C. 1,2 Park, S.J. 3 Cantwell, G. 4; Affiliation: 1: Air Force Research Laboratory, WPAFB, OH, USA 2: Semiconductor Research Center, Wright State University, Dayton, OH, USA 3: Department of Materials Science and Technology, K-JIST, Kwangju, Korea 4: ZN Technology, Brea, CA, USA; Source Info: Jan2006, Vol. 287 Issue 1, p16; Subject Term: ZINC oxide; Subject Term: PHOTOCONDUCTIVITY; Subject Term: SEMICONDUCTORS; Subject Term: ELECTRIC conductivity; Author-Supplied Keyword: 71.55.Gs; Author-Supplied Keyword: 72.40.+w; Author-Supplied Keyword: 72.80.Ey; Author-Supplied Keyword: 73.50.Pz; Author-Supplied Keyword: A1. Mixed conduction; Author-Supplied Keyword: A1. Persistent photoconductivity (ppc); Author-Supplied Keyword: A1. Photo-Hall-effect; Author-Supplied Keyword: B1. p-type ZnO; Author-Supplied Keyword: B1. Zinc oxide; Author-Supplied Keyword: B2. Semiconducting II–VI materials; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jcrysgro.2005.10.035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19357808&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Glavicic, M.G. AU - Miller, J.D. AU - Semiatin, S.L. T1 - A method to measure the texture of secondary alpha in bimodal titanium-alloy microstructures JO - Scripta Materialia JF - Scripta Materialia Y1 - 2006/01/15/ VL - 54 IS - 2 M3 - Article SP - 281 EP - 286 SN - 13596462 AB - Abstract: A general method for determining the texture of the secondary-alpha phase in titanium alloys with a bimodal microstructure was developed. Validated using Ti–6Al–4V, the procedure is generally applicable to all alpha–beta titanium alloys and can be applied using a variety of texture-measurement techniques. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROMECHANICS KW - TITANIUM alloys KW - METALLIC composites KW - METALS KW - Microstructure KW - Texture KW - Titanium N1 - Accession Number: 19035493; Glavicic, M.G. 1,2; Email Address: michael.glavicic@wpafb.af.mil Miller, J.D. 1 Semiatin, S.L. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMP, Wright-Patterson AFB, OH 45433-7817, United States 2: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, United States; Source Info: Jan2006, Vol. 54 Issue 2, p281; Subject Term: MICROMECHANICS; Subject Term: TITANIUM alloys; Subject Term: METALLIC composites; Subject Term: METALS; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Texture; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.scriptamat.2005.09.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19035493&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fan, Li AU - Fallahi, Mahmoud AU - Murray, James T. AU - Bedford, Robert AU - Kaneda, Yushi AU - Zakharian, Aramis R. AU - Hader, Jörg AU - Moloney, Jerome V. AU - Stolz, Wolfgang AU - Koch, Stephan W. T1 - Tunable high-power high-brightness linearly polarized vertical-external-cavity surface-emitting lasers. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2006/01/09/ VL - 88 IS - 2 M3 - Article SP - 021105 PB - American Institute of Physics SN - 00036951 AB - We report on the development and the demonstration of tunable high-power high-brightness linearly polarized vertical-external-cavity surface-emitting lasers (VECSELs). A V-shaped cavity, in which the antireflection-coated VECSEL chip (active mirror) is located at the fold, and a birefringent filter are employed to achieve a large wavelength tuning range. Multiwatt cw linearly polarized TEM00 output with a 20 nm tuning range and narrow linewidth is demonstrated at room temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - LIGHT amplifiers KW - MOLECULAR beam epitaxy KW - EPITAXY KW - CRYSTAL growth KW - QUANTUM wells KW - ENERGY-band theory of solids N1 - Accession Number: 19501026; Fan, Li 1; Email Address: lifan@optics.arizona.edu Fallahi, Mahmoud 1 Murray, James T. 2 Bedford, Robert 3 Kaneda, Yushi 1 Zakharian, Aramis R. 4 Hader, Jörg 4 Moloney, Jerome V. 4 Stolz, Wolfgang 5 Koch, Stephan W. 5; Affiliation: 1: College of Optical Sciences, University of Arizona, Tucson, Arizona 85721 2: Areté Associates, 333 N. Wilmot Road, Ste 450, Tucson, Arizona 85751-2348 3: Air Force Research Laboratory, 2241 Avionics Circle Wright-Patterson AFB, Ohio 45433 4: Arizona Center for Mathematical Science, University of Arizona, Tucson, Arizona 85721 5: Department of Physics and Material Sciences Center, Philipps Universität Marburg, Renthof 5, 35032 Marburg, Germany; Source Info: 1/9/2006, Vol. 88 Issue 2, p021105; Subject Term: LASERS; Subject Term: LIGHT amplifiers; Subject Term: MOLECULAR beam epitaxy; Subject Term: EPITAXY; Subject Term: CRYSTAL growth; Subject Term: QUANTUM wells; Subject Term: ENERGY-band theory of solids; Number of Pages: 3p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.2164921 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19501026&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Johnson, Glenn R. AU - Spain, Jim C. T1 - Synthesis of substituted catechols using nitroarene dioxygenases JO - Enzyme & Microbial Technology JF - Enzyme & Microbial Technology Y1 - 2006/01/03/ VL - 38 IS - 1/2 M3 - Article SP - 142 EP - 147 SN - 01410229 AB - Abstract: The nitroarene dioxygenases are in the class of Rieske iron-containing oxygenases that incorporate atmospheric oxygen into substrates via electrophilic attack on the substrate. In their native role, the nitroarene dioxygenases start degradative pathways by hydroxylating nitro-substituted, and adjacent unsubstituted carbons of nitroaromatic compounds. The reaction yields the corresponding nitro-cis-cyclohexadienediol, which is unstable and spontaneously re-aromatizes to form a catechol and nitrite. In bacterial metabolism, the specificity of the hydroxylation determines subsequent steps in degradation pathways. Experiments were done to find whether the specificity could be exploited to direct the hydroxylation of multiply substituted aromatic substrates and thereby produce novel catechols. Recombinant strains carrying genes for nitroarene dioxygenases were used for transformation of various substituted nitroaromatic compounds. The reactions were analyzed using HPLC to track substrate consumption and product formation, then GC–MS and NMR to identify the reaction products. A number of substituted catechols were obtained using the recombinant biocatalysts. The nitro-substituted carbon was the primary site for dioxygenase hydroxylation. When substrates included nitro and halogen substituents, the halogen-substituted positions were also targeted, but less frequently than the nitro-substituted site. The production of catechols was limited in batch fermentations, likely due to toxicity of the quinones that result from air oxidation of catechols. The nitroarene dioxygenases will serve as catalysts for direct synthesis of highly substituted catechols, however, the reaction conditions must be engineered to overcome product toxicity and allow sustained accumulation of catecholic products. [Copyright &y& Elsevier] AB - Copyright of Enzyme & Microbial Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYPHENOLS KW - HYDROXYLATION KW - BIOCHEMISTRY KW - LEAVENING agents KW - Biocatalysis KW - Catechol KW - Dioxygenase KW - Whole-cell biotransformations N1 - Accession Number: 19060132; Johnson, Glenn R. 1; Email Address: glenn.johnson@tyndall.af.mil Spain, Jim C. 2; Affiliation: 1: Air Force Research Laboratory, MLQL, 139 Barnes Drive Suite 2, Tyndall AFB, FL 32403, USA 2: Environmental Engineering Program, School of Civil and Environmental Engineering, 311 Ferst Dr., Georgia Institute of Technology, GA 30332-0512, Atlanta; Source Info: Jan2006, Vol. 38 Issue 1/2, p142; Subject Term: POLYPHENOLS; Subject Term: HYDROXYLATION; Subject Term: BIOCHEMISTRY; Subject Term: LEAVENING agents; Author-Supplied Keyword: Biocatalysis; Author-Supplied Keyword: Catechol; Author-Supplied Keyword: Dioxygenase; Author-Supplied Keyword: Whole-cell biotransformations; NAICS/Industry Codes: 311990 All other food manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.enzmictec.2005.05.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19060132&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Marquis, Emmanuelle A. AU - Seidman, David N. AU - Asta, Mark AU - Woodward, Christopher T1 - Composition evolution of nanoscale Al3Sc precipitates in an Al–Mg–Sc alloy: Experiments and computations JO - Acta Materialia JF - Acta Materialia Y1 - 2006/01// VL - 54 IS - 1 M3 - Article SP - 119 EP - 130 SN - 13596454 AB - Abstract: Controlling the distribution of chemical constituents within complex, structurally heterogeneous systems represents one of the fundamental challenges of alloy design. We demonstrate how the combination of recent developments in sophisticated experimental high resolution characterization techniques and ab initio theoretical methods provide the basis for a detailed level of understanding of the microscopic factors governing compositional distributions in metallic alloys. In a study of the partitioning of Mg in two-phase ternary Al–Sc–Mg alloys by atom-probe tomography, we identify a large Mg concentration enhancement at the coherent α-Al/Al3Sc heterophase interface with a relative Gibbsian interfacial excess of Mg with respect to Al and Sc, , equal to 1.9±0.5atomnm−2. The corresponding calculated value of is ∼1.2atomnm−2. Theoretical ab initio investigations establish an equilibrium driving force for Mg interfacial segregation that is primarily chemical in nature and reflects the strength of the Mg–Sc interactions in an Al-rich alloy. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALLOYS KW - METALLIC composites KW - METALS KW - TOMOGRAPHY KW - EQUILIBRIUM KW - Ab initio calculations KW - Al3Sc precipitates KW - Atom-probe tomography KW - Coherent heterophase interface KW - Mg segregation N1 - Accession Number: 19044787; Marquis, Emmanuelle A. 1,2 Seidman, David N. 2; Email Address: emarqui@sandia.gov Asta, Mark 2 Woodward, Christopher 2,3; Affiliation: 1: Materials Physics Department, Sandia National Laboratories, 7011 East Avenue, MS 9161, Livermore, CA 94550, United States 2: Materials Science and Engineering Department, Northwestern University, Evanston, IL 60208-3108, United States 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, OH 45433, United States; Source Info: Jan2006, Vol. 54 Issue 1, p119; Subject Term: ALLOYS; Subject Term: METALLIC composites; Subject Term: METALS; Subject Term: TOMOGRAPHY; Subject Term: EQUILIBRIUM; Author-Supplied Keyword: Ab initio calculations; Author-Supplied Keyword: Al3Sc precipitates; Author-Supplied Keyword: Atom-probe tomography; Author-Supplied Keyword: Coherent heterophase interface; Author-Supplied Keyword: Mg segregation; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.actamat.2005.08.035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19044787&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ombrello, Timothy AU - Xiao Qin AU - Yiguang Ju AU - Gutso, Alexander AU - Fridman, Alexander AU - Carter, Campbell T1 - Combustion Enhancement via Stabilized Piecewise Nonequilibrium Gliding Arc Plasma Discharge. JO - AIAA Journal JF - AIAA Journal Y1 - 2006/01// VL - 44 IS - 1 M3 - Article SP - 142 EP - 150 SN - 00011452 AB - A new piecewise nonequilibrium gliding arc plasma discharge integrated with a counterflow flame burner was developed and validated to study the effect of a plasma discharge on the combustion enhancement of methane-air diffusion flames. The results showed that the new system provided a well-defined flame geometry for the understanding of the basic mechanism of the plasma-flame interaction. It was shown that with a plasma discharge of the airstream, up to a 220% increase in the extinction strain rate was possible at low-power inputs. The impacts of thermal and nonthermal mechanisms on the combustion enhancement was examined by direct comparison of measured temperature profiles via Rayleigh scattering thermometry and OH number density profiles via planar laser-induced fluorescence (calibrated with absorption) with detailed numerical simulations at elevated air temperatures and radical addition, it was shown that the predicted extinction limits and temperature and OH distributions of the diffusion flames, with only an increase in air temperature, agreed well with the experimental results. These results suggested that the effect of a stabilized piecewise nonequilibrium gliding arc plasma discharge of air at low air temperatures on a diffusion flame was dominated by thermal effects. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - COMBUSTION KW - FLUID dynamics KW - PLASMA jets KW - GAS turbines -- Combustion KW - ATMOSPHERIC diffusion KW - RAYLEIGH scattering KW - LIGHT -- Scattering KW - THERMODYNAMICS N1 - Accession Number: 19519655; Ombrello, Timothy 1 Xiao Qin 1,2,3 Yiguang Ju 1,4,5 Gutso, Alexander 3,6,7 Fridman, Alexander 3,6,8 Carter, Campbell 5,9,10; Affiliation: 1: Princeton University, Princeton, New Jersey 08544 2: Research Staff, Department of Mechanical and Aerospace Engineering, Engineering Quadrangle on Olden Street 3: Member, AIAA 4: Professor, Department of Mechanical and Aerospace Engineering, Engineering Quadrangle on Olden Street 5: Associate Fellow, AIAA 6: Drexel University, Philadelphia, Pennsylvania, 19104 7: Research Professor, Drexel Plasma Institute, 34th and Lancaster Avenue 8: Professor, Drexel Plasma Institute, 34th and Lancaster Avenue 9: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 10: Senior Aerospace Engineer, Aerospace Propulsion Division; Source Info: Jan2006, Vol. 44 Issue 1, p142; Subject Term: AERODYNAMICS; Subject Term: COMBUSTION; Subject Term: FLUID dynamics; Subject Term: PLASMA jets; Subject Term: GAS turbines -- Combustion; Subject Term: ATMOSPHERIC diffusion; Subject Term: RAYLEIGH scattering; Subject Term: LIGHT -- Scattering; Subject Term: THERMODYNAMICS; Number of Pages: 9p; Illustrations: 6 Diagrams, 14 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19519655&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roberts, Michael AU - England, Ellen AU - Bleckmann, Charles T1 - Cyclohexane Removal in a Dual-Tube Membrane Bioreactor. JO - Bioremediation Journal JF - Bioremediation Journal Y1 - 2006/01//Jan-Jun2006 VL - 10 IS - 1/2 M3 - Article SP - 5 EP - 11 PB - Taylor & Francis Ltd SN - 10889868 AB - A dual-tube dense-phase silicone rubber membrane bioreactor was investigated for control of cyclohexane-contaminated air as part of a jet propulsion (JP-8) fuel remediation investigation strategy. The reactor was seeded with a mixed bacterial consortium isolated from the water/fuel interface of a JP-8 jet fuel sample and activated sludge, capable of aromatic and cyclic compound biodegradation. Cyclohexane removal ranged from 1.1 to 28.6 mg L -1 , with removal percentages ranging from 4.6% to 37.6%. Removal in the bioreactor ranged from 29.4 to 596.6 mg min -1 m -2 and measured elimination capacities ranged from 46.7 to 947.9 g m -3 h -1 . Removal rates and elimination capacity increased with increasing biofilm growth and with increasing loading rates of cyclohexane. Loading rates ranged from 395.9 to 2189.5 mg min -1 m -2 . Results of this study showed effective removal of cyclohexane using the membrane bioreactor, suggesting that this technology may have applicability for treating vapors contaminated with cyclic hydrocarbons. [ABSTRACT FROM AUTHOR] AB - Copyright of Bioremediation Journal is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICONES KW - BIOREACTORS KW - CYCLOHEXANE KW - JET propulsion KW - BIODEGRADATION KW - BIOFILMS KW - air KW - biofilter KW - biofiltration KW - bioreactor KW - cyclohexane KW - HFMM KW - hollow fiber KW - hollow fiber membrane module KW - membrane KW - membrane module KW - model KW - silicone N1 - Accession Number: 22089103; Roberts, Michael 1 England, Ellen 2; Email Address: ellen.england@afit.edu Bleckmann, Charles 2; Affiliation: 1: United States Air Force School of Aerospace Medicine, Brooks Air Force Base, Texas, USA 2: Department of Systems and Engineering Management, Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio, USA; Source Info: Jan-Jun2006, Vol. 10 Issue 1/2, p5; Subject Term: SILICONES; Subject Term: BIOREACTORS; Subject Term: CYCLOHEXANE; Subject Term: JET propulsion; Subject Term: BIODEGRADATION; Subject Term: BIOFILMS; Author-Supplied Keyword: air; Author-Supplied Keyword: biofilter; Author-Supplied Keyword: biofiltration; Author-Supplied Keyword: bioreactor; Author-Supplied Keyword: cyclohexane; Author-Supplied Keyword: HFMM; Author-Supplied Keyword: hollow fiber; Author-Supplied Keyword: hollow fiber membrane module; Author-Supplied Keyword: membrane; Author-Supplied Keyword: membrane module; Author-Supplied Keyword: model; Author-Supplied Keyword: silicone; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 7p; Illustrations: 3 Diagrams, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1080/10889860600734422 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22089103&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wolinsky, Fredric D. AU - Miller, Thomas R. AU - Hyonggin An AU - Brezinski, Paul R. AU - Vaughn, Thomas E. AU - Rosenthal, Gary E. T1 - Dual use of Medicare and the Veterans Health Administration: are there adverse health outcomes? JO - BMC Health Services Research JF - BMC Health Services Research Y1 - 2006/01// VL - 6 M3 - Article SP - 1 EP - 11 PB - BioMed Central SN - 14726963 AB - Background: Millions of veterans are eligible to use the Veterans Health Administration (VHA) and Medicare because of their military service and age. This article examines whether an indirect measure of dual use based on inpatient services is associated with increased mortality risk. Methods: Data on 1,566 self-responding men (weighted N = 1,522) from the Survey of Assets and Health Dynamics among the Oldest Old (AHEAD) were linked to Medicare claims and the National Death Index. Dual use was indirectly indicated when the self-reported number of hospital episodes in the 12 months prior to baseline was greater than that observed in the Medicare claims. The independent association of dual use with mortality was estimated using proportional hazards regression. Results: 96 (11%) of the veterans were classified as dual users. 766 men (50.3%) had died by December 31, 2002, including 64.9% of the dual users and 49.3% of all others, for an attributable mortality risk of 15.6% (p < .003). Adjusting for demographics, socioeconomics, comorbidity, hospitalization status, and selection bias at baseline, as well as subsequent hospitalization for ambulatory care sensitive conditions, the independent effect of dual use was a 56.1% increased relative risk of mortality (AHR = 1.561; p = .009). Conclusion: An indirect measure of veterans' dual use of the VHA and Medicare systems, based on inpatient services, was associated with an increased risk of death. Further examination of dual use, especially in the outpatient setting, is needed, because dual inpatient and dual outpatient use may be different phenomena. [ABSTRACT FROM AUTHOR] AB - Copyright of BMC Health Services Research is the property of BioMed Central and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MEDICAL care of veterans KW - MEDICARE KW - HEALTH insurance KW - MORTALITY KW - MEDICAL policy KW - UNITED States KW - UNITED States. Veterans Health Administration N1 - Accession Number: 29324394; Wolinsky, Fredric D. 1,2,3; Email Address: fredric-wolinsky@uiowa.edu Miller, Thomas R. 2; Email Address: thomas-miller2@uiowa.edu Hyonggin An 4; Email Address: hyongginan@uiowa.edu Brezinski, Paul R. 2,5; Email Address: pbrezins@mail.public-health.uiowa.edu Vaughn, Thomas E. 1,2; Email Address: thomas-vaughn@uiowa.edu Rosenthal, Gary E. 1,2,3; Email Address: gary-rosenthal@uiowa.edu; Affiliation: 1: Center for Research in the Implementation of Innovative Strategies in Practice (CRIISP), Iowa City Health Care System, 601 Highway 6 West, Iowa City, IA52246, USA 2: Health Management and Policy, College of Public Health, the University of Iowa, 200 Hawkins Drive, Iowa City, IA52242, USA 3: Internal Medicine, Carver College of Medicine, the University of Iowa, 200 Hawkins Drive, Iowa City, IA52242, USA 4: Biostatistics, College of Public Health, the University of Iowa, 200 Hawkins Drive, Iowa City, IA52242, USA 5: United States Air Force, USA; Source Info: 2006, Vol. 6, p1; Subject Term: MEDICAL care of veterans; Subject Term: MEDICARE; Subject Term: HEALTH insurance; Subject Term: MORTALITY; Subject Term: MEDICAL policy; Subject Term: UNITED States; Company/Entity: UNITED States. Veterans Health Administration; NAICS/Industry Codes: 524112 Direct group life, health and medical insurance carriers; NAICS/Industry Codes: 524111 Direct individual life, health and medical insurance carriers; NAICS/Industry Codes: 923120 Administration of Public Health Programs; NAICS/Industry Codes: 923130 Administration of Human Resource Programs (except Education, Public Health, and Veterans' Affairs Programs); NAICS/Industry Codes: 923140 Administration of Veterans' Affairs; Number of Pages: 11p; Illustrations: 2 Charts; Document Type: Article L3 - 10.1186/1472-6963-6-131 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=29324394&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cohen, Kelly AU - Siegel, Stefan AU - McLaughlin, Thomas T1 - A heuristic approach to effective sensor placement for modeling of a cylinder wake JO - Computers & Fluids JF - Computers & Fluids Y1 - 2006/01// VL - 35 IS - 1 M3 - Article SP - 103 EP - 120 SN - 00457930 AB - Abstract: The effectiveness of a sensor configuration for feedback flow control on the wake of a circular cylinder is investigated in both direct numerical simulation as well as in a water tunnel experiment. The research program is aimed at suppressing the von Kármán vortex street in the wake of a cylinder at a Reynolds number of 100. The design of sensor number and placement was based on data from a laminar two-dimensional simulation of the Navier–Stokes equations for the unforced condition. A low-dimensional proper orthogonal decomposition (POD) was applied to the vorticity calculated from the flow field and sensor placement was based on the intensity of the resulting spatial eigenfunctions. The numerically generated data was comprised of 70 snapshots taken over three cycles from the steady state regime. A linear stochastic estimator (LSE) was employed to map the velocity data to the temporal coefficients of the reduced order model. The capability of the sensor configuration to provide accurate estimates of the four low-dimensional states was validated experimentally in a water tunnel at a Reynolds number of 108. For the experimental wake, a sample of 200 particle image velocimetry (PIV) measurements was used. Results show that for experimental data, the root mean square estimation error of the estimates of the first two modes was within 6% of the desired values and for the next two modes was within 20% of the desired values. This level of error is acceptable for a moderately robust controller. [Copyright &y& Elsevier] AB - Copyright of Computers & Fluids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DETECTORS KW - AERODYNAMICS KW - FLUID dynamic measurements KW - PHYSICAL measurements N1 - Accession Number: 18627724; Cohen, Kelly 1 Siegel, Stefan; Email Address: Stefan.Siegel@usafa.af.mil McLaughlin, Thomas 1; Affiliation: 1: Department of Aeronautics, 2354 Fairchild Drive Suite 6H27, US Air Force Academy, CO 80840-6222, USA; Source Info: Jan2006, Vol. 35 Issue 1, p103; Subject Term: DETECTORS; Subject Term: AERODYNAMICS; Subject Term: FLUID dynamic measurements; Subject Term: PHYSICAL measurements; Number of Pages: 18p; Document Type: Article L3 - 10.1016/j.compfluid.2004.11.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18627724&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, J.K. AU - Tzou, D.Y. AU - Beraun, J.E. T1 - A semiclassical two-temperature model for ultrafast laser heating JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2006/01// VL - 49 IS - 1/2 M3 - Article SP - 307 EP - 316 SN - 00179310 AB - Abstract: A semiclassical two-step heating model is proposed to investigate thermal transport in metals caused by ultrashort laser heating. Based on the Boltzmann transport equation, three equations of the conservation of number density, momentum and energy are derived for the electron subsystem. The thermal transport equation used for the phonon subsystem remains the same as that used in the phenomenological two-temperature (2T) model, including the energy exchange with hot electrons and the ultrafast thermal relaxation effect in general. The main difference between the semiclassical and the phenomenological 2T models is that the former includes the effects of electron drifting, which could result in significantly different electron and lattice temperature response from the latter for higher-intensity and shorter-pulse laser heating. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEATING KW - HEAT transfer KW - ENERGY transfer KW - PHONONS KW - QUASIPARTICLES (Physics) KW - Boltzmann transport equation KW - Electron drift velocity KW - Electron kinetic pressure KW - Semiclassical two-temperature model KW - Ultrashort laser heating N1 - Accession Number: 19694134; Chen, J.K. 1; Email Address: chenjnk@missouri.edu Tzou, D.Y. 2 Beraun, J.E. 1; Affiliation: 1: Laser Effects Research Branch, Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117-5776, USA 2: Department of Mechanical and Aerospace Engineering, University of Missouri-Columbia, Columbia, MO 65211, USA; Source Info: Jan2006, Vol. 49 Issue 1/2, p307; Subject Term: HEATING; Subject Term: HEAT transfer; Subject Term: ENERGY transfer; Subject Term: PHONONS; Subject Term: QUASIPARTICLES (Physics); Author-Supplied Keyword: Boltzmann transport equation; Author-Supplied Keyword: Electron drift velocity; Author-Supplied Keyword: Electron kinetic pressure; Author-Supplied Keyword: Semiclassical two-temperature model; Author-Supplied Keyword: Ultrashort laser heating; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2005.06.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19694134&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abadi, Jacob T1 - Egypt's Policy Towards Israel: The Impact of Foreign and Domestic Constraints. JO - Israel Affairs JF - Israel Affairs Y1 - 2006///Winter2006 VL - 12 IS - 1 M3 - Article SP - 159 EP - 176 PB - Routledge SN - 13537121 AB - Egyptian policy towards Israel has lacked consistency and issues relating to its role as leader of the Arab world have weighed more heavily on its Israel policy than actual hostility towards the Jewish state. Moreover, the existence of a powerful and vocal Islamist constituency, and the pressure of over-population, a weak economy and over-reliance on US support have also played a role. Egypt has not relinquished its desire to lead the Arab world and this has prevented it from developing a meaningful rapprochement with Israel. [ABSTRACT FROM AUTHOR] AB - Copyright of Israel Affairs is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERNATIONAL relations KW - EGYPT -- Foreign relations KW - ISRAEL -- Foreign relations KW - EGYPT KW - ISRAEL N1 - Accession Number: 19098985; Abadi, Jacob 1; Affiliation: 1: Professor, Department of History, The United States Air Force Academy; Source Info: Winter2006, Vol. 12 Issue 1, p159; Subject Term: INTERNATIONAL relations; Subject Term: EGYPT -- Foreign relations; Subject Term: ISRAEL -- Foreign relations; Subject Term: EGYPT; Subject Term: ISRAEL; NAICS/Industry Codes: 911410 Foreign affairs; NAICS/Industry Codes: 928120 International Affairs; Number of Pages: 18p; Document Type: Article L3 - 10.1080/13537120500382040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19098985&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boerio, F. J. AU - Roby, B. AU - Dillingham, R. G. AU - Bossi, R. H. AU - Crane, R. L. T1 - Effect of Grit-Blasting on the Surface Energy of Graphite/Epoxy Composites. JO - Journal of Adhesion JF - Journal of Adhesion Y1 - 2006/01// VL - 82 IS - 1 M3 - Article SP - 19 EP - 37 SN - 00218464 AB - Contact-angle measurements were used to determine the surface energies of graphite/epoxy composites before and after grit-blasting with 80- and 220-grit garnet particles. Two different composite systems cured at 350°F were considered but they behaved similarly. Contact angles made by a series of liquids, including water, ethylene glycol, glycerol, formamide, and methylene iodide on as-tooled and grit-blasted composite panels were measured using a contact-angle goniometer. The contact angles were used to determine the dispersive and polar components of the surface energy . However, instead of using the contact angles made by two liquids to determine the two components of the surface energy, we used the contact angles made by several liquids and a graphical technique to determine and to improve the accuracy of the measurements. It was found that the surface energies of as-tooled composites were approximately 35 mJ/m 2 and were mostly dispersive; the polar components were small. After grit-blasting with 80- or 220-grit garnet, the dispersive component of the surface energy decreased somewhat whereas the polar component increased significantly; the total surface energy after grit-blasting with 80- or 220-grit garnet was approximately 50 mJ/m 2 . Etching composites in oxygen plasmas had a similar effect on the dispersive and polar components of the surface energy and on the total surface energy. Grit-blasting with 220-grit alumina resulted in higher dispersive components of surface energy and lower polar components than grit-blasting with 220-grit garnet even though the total surface energy was similar after grit-blasting with 220-grit garnet and alumina. Correcting the measured surface energies for the effects of roughness resulted in small decreases in the total surface energy of the grit-blasted composites. However, even after correcting for roughness, the surface energies of the grit-blasted composites were still significantly greater than those of the as-tooled composites, indicating that grit-blasting resulted in changes in surface chemistry as well as changes in surface morphology of the composites. These changes in surface chemistry certainly included the removal of mold release agents from the as-tooled composites but probably also involved the creation of free radicals and their reaction with atmospheric oxygen to introduce oxygen-containing functional groups on the surfaces of the composites. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Adhesion is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHOT (Pellets) KW - GRAPHITE composites KW - EPOXY resins KW - GARNET KW - GLYCERIN KW - Graphite/epoxy composites KW - Grit-blasting KW - Plasma etching KW - Surface composition KW - Surface energy KW - Surface morphology KW - Wettability N1 - Accession Number: 19302387; Boerio, F. J.; Email Address: f.james.boerio@uc.edu Roby, B. 1 Dillingham, R. G. 1 Bossi, R. H. 2 Crane, R. L. 3; Affiliation: 1: Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, Ohio, USA 2: Boeing, Seattle, Washington, USA 3: Materials Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio, USA; Source Info: Jan2006, Vol. 82 Issue 1, p19; Subject Term: SHOT (Pellets); Subject Term: GRAPHITE composites; Subject Term: EPOXY resins; Subject Term: GARNET; Subject Term: GLYCERIN; Author-Supplied Keyword: Graphite/epoxy composites; Author-Supplied Keyword: Grit-blasting; Author-Supplied Keyword: Plasma etching; Author-Supplied Keyword: Surface composition; Author-Supplied Keyword: Surface energy; Author-Supplied Keyword: Surface morphology; Author-Supplied Keyword: Wettability; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 325611 Soap and Other Detergent Manufacturing; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 332992 Small Arms Ammunition Manufacturing; Number of Pages: 19p; Illustrations: 4 Charts, 6 Graphs; Document Type: Article L3 - 10.1080/00218460500418516 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19302387&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maute, K. AU - Reich, G. W. T1 - Integrated Multidisciplinary Topology Optimization Approach to Adaptive Wing Design. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2006/01//Jan/Feb2006 VL - 43 IS - 1 M3 - Article SP - 253 EP - 263 SN - 00218669 AB - This paper presents a novel optimization approach to the design of mechanisms in morphing aircraft structures. The layout of the mechanism and the location and number of actuators and pivots are determined by an extended formulation of a material-based topology optimization. The design problem is modeled within a coupled fluid-structure analysis framework to directly assess aerodynamic performance criteria while optimizing the overall mechanized system. The proposed methodology is illustrated through the design optimization of a quasi-three-dimensional section of an adaptive wing, where the approach is compared to a conventional two-step approach of first optimizing the aerodynamic shape for one or multiple flight conditions, and then finding the mechanism that leads to this shape. The comparison shows that the interactions between flow, structural deformation, mechanism, and actuator must be considered to find the optimal solution. The optimization approach presented allows direct consideration of these interactions at the expense of an increased computational burden. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - AIRPLANES -- Design & construction KW - ACTUATORS KW - FLIGHT KW - AERODYNAMICS N1 - Accession Number: 20375394; Maute, K. 1,2; Email Address: maute@colorado.edu Reich, G. W. 2,3; Email Address: Gregory.Reich@wpafb.af.mil; Affiliation: 1: University of Colorado at Boulder, Boulder, Colorado 80309-0429 2: Member, AIAA 3: U.S. Air Force Research Laboratory, Dayton, Ohio 45433-7531; Source Info: Jan/Feb2006, Vol. 43 Issue 1, p253; Subject Term: AIRPLANE wings; Subject Term: AIRPLANES -- Design & construction; Subject Term: ACTUATORS; Subject Term: FLIGHT; Subject Term: AERODYNAMICS; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 11p; Illustrations: 11 Diagrams, 2 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20375394&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Buguo AU - Callahan, Michael AU - Bailey, John T1 - Synthesis of dense polycrystalline GaN of high purity by the chemical vapor reaction process JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2006/01// VL - 286 IS - 1 M3 - Article SP - 50 EP - 54 SN - 00220248 AB - Abstract: A process for producing high-purity, dense polycrystalline gallium nitride is proposed. Dense polycrystalline gallium nitride was produced by the reaction of ammonia, gallium metal, and a halide source in a quartz boat containing metallic gallium. The process is called the chemical vapor reaction process. The hard crust-like pieces of polycrystalline GaN obtained are of high purity, can be used as source material for single-crystal growth by the ammonothermal technique, sublimation, sputtering, and pulse laser deposition. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - POLYCRYSTALS KW - CHEMICAL vapor deposition KW - PULSED laser deposition KW - A1. Dense polycrystalline GaN KW - A2. Chemical vapor reaction process (CVRP) KW - A3. Vapor synthesis KW - B1. Halides KW - B1. Nitrides N1 - Accession Number: 19129697; Wang, Buguo 1; Email Address: buguo@solidstatescientific.com Callahan, Michael 2 Bailey, John 1; Affiliation: 1: Solid State Scientific Corporation, 27-2 Wright Road, Hollis, NH 03049, USA 2: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA; Source Info: Jan2006, Vol. 286 Issue 1, p50; Subject Term: GALLIUM nitride; Subject Term: POLYCRYSTALS; Subject Term: CHEMICAL vapor deposition; Subject Term: PULSED laser deposition; Author-Supplied Keyword: A1. Dense polycrystalline GaN; Author-Supplied Keyword: A2. Chemical vapor reaction process (CVRP); Author-Supplied Keyword: A3. Vapor synthesis; Author-Supplied Keyword: B1. Halides; Author-Supplied Keyword: B1. Nitrides; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jcrysgro.2005.09.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19129697&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Attar, P.J. AU - Gordnier, R.E. T1 - Aeroelastic prediction of the limit cycle oscillations of a cropped delta wing JO - Journal of Fluids & Structures JF - Journal of Fluids & Structures Y1 - 2006/01// VL - 22 IS - 1 M3 - Article SP - 45 EP - 58 SN - 08899746 AB - Abstract: The flutter and limit cycle oscillation (LCO) behavior of a cropped delta wing are investigated using a newly developed computational aeroelastic solver. This computational model includes a well-validated Euler finite difference solver coupled to a high-fidelity finite element structural solver. The nonlinear structural model includes geometric nonlinearities which are modelled using a co-rotational formulation. The LCOs of the cropped delta wing are computed and the results are compared to previous computations and to experiment. Over the range of dynamic pressures for which experimental results are reported, the LCO magnitudes computed using the current model are comparable to those from a previous computation which used a lower-order von Karman structural model. However, for larger dynamic pressures, the current computational model and the model which used the von Karman theory start to differ significantly, with the current model predicting larger deflections for a given dynamic pressure. This results in a LCO curve which is in better qualitative agreement with experiment. Flow features which were present in the previous computational model such as a leading edge vortex and a shock wave are enhanced in the current model due to the prediction of larger deflections and rotations at the higher dynamic pressures. [Copyright &y& Elsevier] AB - Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FINITE element method KW - AERODYNAMICS KW - DIFFERENTIABLE dynamical systems KW - NUMERICAL analysis KW - Computational aeroelasticity KW - Nonlinear aeroelasticity N1 - Accession Number: 19163836; Attar, P.J.; Email Address: peter.attar@wpafb.af.mil Gordnier, R.E. 1; Email Address: raymond.gordnier@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, AFRL/VAAC, 2210 Eighth St., Bldg 146, WPAFB, OH 45433-7512, USA; Source Info: Jan2006, Vol. 22 Issue 1, p45; Subject Term: FINITE element method; Subject Term: AERODYNAMICS; Subject Term: DIFFERENTIABLE dynamical systems; Subject Term: NUMERICAL analysis; Author-Supplied Keyword: Computational aeroelasticity; Author-Supplied Keyword: Nonlinear aeroelasticity; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.jfluidstructs.2005.08.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19163836&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rauch, Michelle AU - Graef, Harold AU - Rozenzhak, Sophie AU - Jones, Sharon AU - Bleckmann, Charles AU - Kruger, Randell AU - Naik, Rajesh AU - Stone, Morley T1 - Characterization of microbial contamination in United States Air Force aviation fuel tanks. JO - Journal of Industrial Microbiology & Biotechnology JF - Journal of Industrial Microbiology & Biotechnology Y1 - 2006/01// VL - 33 IS - 1 M3 - Article SP - 29 EP - 36 PB - Springer Science & Business Media B.V. SN - 13675435 AB - Bacteria and fungi, isolated from United States Air Force (USAF) aviation fuel samples, were identified by gas chromatograph fatty acid methyl ester (GC-FAME) profiling and 16S or 18S rRNA gene sequencing. Thirty-six samples from 11 geographically separated USAF bases were collected. At each base, an above-ground storage tank, a refueling truck, and an aircraft wing tank were sampled at the lowest sample point, or sump, to investigate microbial diversity and dispersion within the fuel distribution chain. Twelve genera, including four Bacillus species and two Staphylococcus species, were isolated and identified. Bacillus licheniformis, the most prevalent organism isolated, was found at seven of the 11 bases. Of the organisms identified, Bacillus sp., Micrococcus luteus, Sphinogmonas sp., Staphylococcus sp., and the fungus Aureobasidium pullulans have previously been isolated from aviation fuel samples. The bacteria Pantoea ananatis, Arthrobacter sp., Alcaligenes sp., Kocuria rhizophilia, Leucobacter komagatae, Dietza sp., and the fungus Discophaerina fagi have not been previously reported in USAF aviation fuel. Only at two bases were the same organisms isolated from all three sample points in the fuel supply distribution chain. Isolation of previously undocumented organisms suggests either, changes in aviation fuel microbial community in response to changes in aviation fuel composition, additives and biocide use, or simply, improvements in isolation and identification techniques. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Industrial Microbiology & Biotechnology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROBIAL contamination KW - VIRAL contamination KW - BACTERIA KW - FUNGI KW - FUNGUS-bacterium relationships KW - AIRPLANES -- Fuel tanks KW - UNITED States KW - Aviation fuel KW - Fuel microorganisms KW - Jet-A KW - JP-4 KW - JP-8 KW - Microbial contamination KW - UNITED States. Air Force N1 - Accession Number: 19300773; Rauch, Michelle 1 Graef, Harold 2 Rozenzhak, Sophie 1 Jones, Sharon 3 Bleckmann, Charles 2; Email Address: Charles.Bleckmann@afit.edu Kruger, Randell 1 Naik, Rajesh 4 Stone, Morley 4; Affiliation: 1: Fuels Branch, Propulsion Directorate , Air Force Research Laboratory , Wright-Patterson AFB 45433 USA 2: Department of Systems and Engineering Management , Air Force Institute of Technology , Wright-Patterson AFB OH 45433 USA 3: UES , 4401 Dayton-Xenia Road Dayton 45432 USA 4: Materials and Manufacturing Directorate , Biotechnology Group, Air Force Research Laboratory , Wright-Patterson AFB 45433 USA; Source Info: Jan2006, Vol. 33 Issue 1, p29; Subject Term: MICROBIAL contamination; Subject Term: VIRAL contamination; Subject Term: BACTERIA; Subject Term: FUNGI; Subject Term: FUNGUS-bacterium relationships; Subject Term: AIRPLANES -- Fuel tanks; Subject Term: UNITED States; Author-Supplied Keyword: Aviation fuel; Author-Supplied Keyword: Fuel microorganisms; Author-Supplied Keyword: Jet-A; Author-Supplied Keyword: JP-4; Author-Supplied Keyword: JP-8; Author-Supplied Keyword: Microbial contamination; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 928110 National Security; Number of Pages: 8p; Illustrations: 3 Charts; Document Type: Article L3 - 10.1007/s10295-005-0023-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19300773&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gunzelmann, Glenn AU - Anderson, John R. T1 - Location matters: Why target location impacts performance in orientation tasks. JO - Memory & Cognition JF - Memory & Cognition Y1 - 2006/01// VL - 34 IS - 1 M3 - Article SP - 41 EP - 59 SN - 0090502X AB - This research explores human performance in a spatial orientation task. In three experiments, participants saw a target highlighted in a visual scene and were asked to locate it on a map of the space. Across all of the experiments, the target's location in the visual scene influenced the participants' response times. Generally, response times increased when the target was located farther away from the viewer, when the target was farther to one side or the other, and when more distractors were nearby. However, there were important exceptions to these findings, suggesting that participants encode the location of a target hierarchically, using different features of the space depending on the target's particular location. We conclude that participants perform such tasks by extracting a description from the egocentric view and then transforming that description to allow them to find the target on the map. [ABSTRACT FROM AUTHOR] AB - Copyright of Memory & Cognition is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORIENTATION (Psychology) KW - SPATIAL behavior KW - REACTION time KW - PSYCHOPHYSIOLOGY KW - MOTOR ability KW - EGOISM N1 - Accession Number: 20711907; Gunzelmann, Glenn 1; Email Address: gIenn.gunzelmann@mesa.afmc.af.mil Anderson, John R. 2; Affiliation: 1: Air Force Research Laboratory, Mesa, Arizona 2: Carnegie Mellon University, Pittsburgh, Pennsylvania; Source Info: Jan2006, Vol. 34 Issue 1, p41; Subject Term: ORIENTATION (Psychology); Subject Term: SPATIAL behavior; Subject Term: REACTION time; Subject Term: PSYCHOPHYSIOLOGY; Subject Term: MOTOR ability; Subject Term: EGOISM; Number of Pages: 20p; Illustrations: 2 Black and White Photographs, 3 Diagrams, 5 Charts, 9 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20711907&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McCone, David AU - O'Donnell, Kathy T1 - Marriage and Divorce Trends for Graduates of the U.S. Air Force Academy. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2006/01// VL - 18 IS - 1 M3 - Article SP - 61 EP - 75 PB - Taylor & Francis Ltd SN - 08995605 AB - Numerous data support the benefits of a stable marriage and document the negative consequences of marital distress and divorce. An estimated 40% to 50% of first marriages in the United States end in divorce (Bramlett & Mosher, 2002). Military members experience similar divorce rates overall but fewer divorces among officers (Karacaoglu, 2003). The marital status of U.S. Air Force Academy (USAFA) graduates was assessed and evaluated for unique risk factors for this population. Results indicate that USAFA graduates from class years 1990 through 2002 have a lower divorce rate than the general U.S. population. When assessed separately, there is no effect of the timing of the wedding or the type of spouse on marriage disruption rates. However, there is an interaction between these two risk factors that increases the probability of marriage disruption for those who marry other USAFA graduates within 6 months of graduation. Implications and further research endeavors are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY personnel KW - MARRIAGE KW - DIVORCE KW - UNITED States KW - Kinship, Marriage, and the Family KW - UNITED States. Air Force KW - UNITED States Air Force Academy N1 - Accession Number: 20200289; McCone, David 1; Email Address: David.McCone@USAFA.af.mil O'Donnell, Kathy 2; Affiliation: 1: Department of Behavioral Sciences and Leadership United States Air Force Academy 2: Office of Institutional Research and Assessment United States Air Force Academy; Source Info: Jan2006, Vol. 18 Issue 1, p61; Subject Term: MILITARY personnel; Subject Term: MARRIAGE; Subject Term: DIVORCE; Subject Term: UNITED States; Author-Supplied Keyword: Kinship, Marriage, and the Family; Company/Entity: UNITED States. Air Force Company/Entity: UNITED States Air Force Academy; NAICS/Industry Codes: 928110 National Security; Number of Pages: 15p; Illustrations: 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1207/s15327876mp1801_4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20200289&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beloiu, D.M. AU - Ibrahim, R.A. AU - Pettit, C.L. T1 - Influence of boundary conditions relaxation on panel flutter with compressive in-plane loads JO - Journal of Fluids & Structures JF - Journal of Fluids & Structures Y1 - 2005/12/29/ VL - 21 IS - 8 M3 - Article SP - 743 EP - 767 SN - 08899746 AB - Abstract: The influence of boundary conditions relaxation on two-dimensional panel flutter is studied in the presence of in-plane loading. The boundary value problem of the panel involves time-dependent boundary conditions that are converted into autonomous form using a special coordinate transformation. Galerkin''s method is used to discretize the panel partial differential equation of motion into six nonlinear ordinary differential equations. The influence of boundary conditions relaxation on the panel modal frequencies and LCO amplitudes in the time and frequency domains is examined using the windowed short time Fourier transform and wavelet transform. The relaxation and system nonlinearity are found to have opposite effects on the time evolution of the panel frequency. Depending on the system damping and dynamic pressure, the panel frequency can increase or decrease with time as the boundary conditions approach the state of simple supports. Bifurcation diagrams are generated by taking the relaxation parameter, dynamic pressure, and in-plane load as control parameters. The corresponding largest Lyapunov exponent is also determined. They reveal complex dynamic characteristics of the panel, including regions of periodic, quasi-periodic, and chaotic motions. [Copyright &y& Elsevier] AB - Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BOUNDARY value problems KW - GALERKIN methods KW - DIFFERENTIAL equations KW - MATHEMATICAL physics N1 - Accession Number: 19118050; Beloiu, D.M. 1 Ibrahim, R.A. 1; Email Address: raouf_ibrahim@eng.wayne.edu Pettit, C.L. 2; Affiliation: 1: Wayne State University, Department of Mechanical Engineering, Detroit, MI 48202, USA 2: Air Force Research Laboratory, AFRL/VASD, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Dec2005, Vol. 21 Issue 8, p743; Subject Term: BOUNDARY value problems; Subject Term: GALERKIN methods; Subject Term: DIFFERENTIAL equations; Subject Term: MATHEMATICAL physics; Number of Pages: 25p; Document Type: Article L3 - 10.1016/j.jfluidstructs.2005.07.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19118050&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H. J. AU - Szmulowicz, F. AU - Mahalingam, K. AU - Brown, G. J. AU - Munshi, S. R AU - Ullrich, B. T1 - Short-period InAs/GaSb type-II superlattices for mid-infrared detectors. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/12/26/ VL - 87 IS - 26 M3 - Article SP - 261106 PB - American Institute of Physics SN - 00036951 AB - Using a newly developed envelope function approximation model that includes interface effects, several InAs/GaSb Type-II superlattices (SLs) were designed for the 4 μm detection threshold. The present model predicts that a given threshold can be reached with a wide range of progressively thinner SL periods and these thinner designs hold a promise of higher mobilities and longer Auger lifetimes, thus higher detector operating temperatures. The proposed SL structures were grown by molecular-beam epitaxy with slow growth rates. As predicted, the band gaps of SLs determined by low-temperature photoluminescence remained constant around 330 meV for the samples in the period range from 50.6 to 21.2 Å. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - MOLECULAR beam epitaxy KW - MOLECULAR beams KW - CRYSTAL growth KW - PHOTOLUMINESCENCE KW - DETECTORS N1 - Accession Number: 19406361; Haugan, H. J. 1; Email Address: heather.haugan@wpafb.afrl.mil Szmulowicz, F. 1 Mahalingam, K. 1 Brown, G. J. 1 Munshi, S. R 1 Ullrich, B. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright—Patterson Air Force Base, Ohio 45433-7707 2: Centers for Materials and Photochemical Sciences; Department of Physics and Astronomy, Bowling Green State University, Bowling Green, Ohio 43403-0224; Source Info: 12/26/2005, Vol. 87 Issue 26, p261106; Subject Term: SUPERLATTICES; Subject Term: MOLECULAR beam epitaxy; Subject Term: MOLECULAR beams; Subject Term: CRYSTAL growth; Subject Term: PHOTOLUMINESCENCE; Subject Term: DETECTORS; Number of Pages: 3p; Illustrations: 1 Diagram, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.2150269 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19406361&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varanasi, C. AU - Barnes, P. N. AU - Burke, J. AU - Carpenter, J. AU - Haugan, T. J. T1 - Controlled introduction of flux pinning centers in YBa2Cu3O7-x films during pulsed-laser deposition. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/12/26/ VL - 87 IS - 26 M3 - Article SP - 262510 PB - American Institute of Physics SN - 00036951 AB - To introduce controlled random inclusion of nanometer-sized nonsuperconducting particulates in YBa2Cu3O7-x films for flux pinning enhancement, a special pulsed-laser-ablation YBa2Cu3O7-x target with a Y2BaCuO5 sector was made and the films were deposited on LaAlO3 substrates. Initial results showed that the films consist of 10–20 nm-sized precipitates. In a 0.5 μm thick film, a transport critical current density (Jc)>3 MA/cm2 at 77 K in self-field was measured. Magnetization Jc at 77 and 65 K showed significant improvements in these films with fine precipitates as compared to regular YBa2Cu3O7-x films (>10 times increase at 9 T, 65 K). [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURED materials KW - PULSED laser deposition KW - COATING processes KW - THIN films KW - FLUX pinning KW - SUPERCONDUCTORS -- Magnetic properties N1 - Accession Number: 19406291; Varanasi, C. 1 Barnes, P. N. 2 Burke, J. 2 Carpenter, J. 2 Haugan, T. J. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, Ohio 45469 2: Air Force Research Laboratory, Propulsion Directorate, 1950 Fifth St. Bldg 450, Wright-Patterson AFB, Ohio 45433-7251; Source Info: 12/26/2005, Vol. 87 Issue 26, p262510; Subject Term: NANOSTRUCTURED materials; Subject Term: PULSED laser deposition; Subject Term: COATING processes; Subject Term: THIN films; Subject Term: FLUX pinning; Subject Term: SUPERCONDUCTORS -- Magnetic properties; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 3p; Illustrations: 3 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.2143112 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19406291&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Sukesh AU - Meyer, Terrence R. AU - Gord, James R. T1 - Time-resolved dynamics of resonant and nonresonant broadband picosecond coherent anti-Stokes Raman scattering signals. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/12/26/ VL - 87 IS - 26 M3 - Article SP - 264103 PB - American Institute of Physics SN - 00036951 AB - The time-resolved dynamics of resonant and nonresonant broadband picosecond coherent anti-Stokes Raman scattering (CARS) signals in gas-phase media are investigated. For ∼135 ps pump and probe beams and ∼106 ps Stokes beams, the magnitude of the nonresonant signals are decreased by more than three orders of magnitude when the probe beam is delayed by ∼110 ps, whereas the resonant nitrogen CARS signal is reduced only by a factor of 3. Investigation of these time dynamics is important for understanding the optimal time delay for nonresonant background suppression as well as for understanding the collisional and Doppler dependence of the resonant CARS signals. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN effect KW - ULTRASHORT laser pulses KW - TIME delay systems KW - LIGHT -- Scattering KW - PHYSICS KW - NITROGEN N1 - Accession Number: 19406298; Roy, Sukesh 1; Email Address: sroy@woh.rr.com Meyer, Terrence R. 1 Gord, James R. 2; Affiliation: 1: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, Ohio 45440 2: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, Ohio 45433; Source Info: 12/26/2005, Vol. 87 Issue 26, p264103; Subject Term: RAMAN effect; Subject Term: ULTRASHORT laser pulses; Subject Term: TIME delay systems; Subject Term: LIGHT -- Scattering; Subject Term: PHYSICS; Subject Term: NITROGEN; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.2159576 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19406298&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Krause, L. Habash AU - Enloe, C.L. AU - Haaland, R.K. AU - Golando, P. T1 - Microsatellite missions to conduct midlatitude studies of equatorial ionospheric plasma bubbles JO - Advances in Space Research JF - Advances in Space Research Y1 - 2005/12/15/ VL - 36 IS - 12 M3 - Article SP - 2474 EP - 2479 SN - 02731177 AB - Abstract: Two missions presently under development by the United States Air Force Academy (USAFA), FalconSAT-2 and FalconSAT-3, include mission scientific objectives targeting the study of ionospheric F region plasma density depletions and topside bubbles associated with the so-called Equatorial Spread F (ESF) phenomena. The Miniature Electrostatic Analyzer (MESA), a USAFA-designed patch sensor that measures differential energy fluxes of electrons from 0.05 to 13eV in six channels, is the primary experiment aboard FalconSAT-2, a 25-kg microsatellite intended for launch into an International Space Station (ISS) orbit via the Space Shuttle. Because the orbit will be approximately 360km in altitude and of 52° inclination, FalconSAT-2 observations will complement those of low latitude missions (e.g., C/NOFS) and polar latitude, higher altitude missions (e.g., DMSP). Realistic internal magnetic field models demonstrate that field lines with apex heights of 1500km (representing the upper altitude limit of equatorial plasma bubbles) may intersect the orbit plane at dip latitudes greater than 35°. Thus, FalconSAT-2 will be able to observe plasma depletions that have propagated poleward along the field lines and lower in altitude, depletions that may not be observed with the high altitude DMSP and the low latitude C/NOFS. Additionally, there may be opportunities for FalconSAT-2 to make simultaneous multipoint in situ measurements of large-scale plasma bubbles with other low altitude satellites, such as C/NOFS and DMSP. We will present a statistical analysis of the probability of making such measurements using nominal orbital parameters of the relevant spacecraft. Finally, a description of the FalconSAT-3 follow-on mission, including scientific objectives associated with seeking kinetic effects, is presented. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSPHERE KW - SPACE environment KW - UPPER atmosphere KW - PARTICLES (Nuclear physics) KW - Equatorial ionospheric plasma bubbles KW - Equatorial Spread F KW - Ionosphere F region plasma KW - Space weather N1 - Accession Number: 19120163; Krause, L. Habash; Email Address: Linda.Krause@usafa.af.mil Enloe, C.L. 1 Haaland, R.K. 1 Golando, P. 1; Affiliation: 1: US Air Force Academy, Department of Physics, 2354 Fairchild Drive, USAF Academy, CO 80840, USA; Source Info: Dec2005, Vol. 36 Issue 12, p2474; Subject Term: IONOSPHERE; Subject Term: SPACE environment; Subject Term: UPPER atmosphere; Subject Term: PARTICLES (Nuclear physics); Author-Supplied Keyword: Equatorial ionospheric plasma bubbles; Author-Supplied Keyword: Equatorial Spread F; Author-Supplied Keyword: Ionosphere F region plasma; Author-Supplied Keyword: Space weather; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.asr.2004.03.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19120163&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Knipp, D.J. AU - Welliver, T. AU - McHarg, M.G. AU - Chun, F.K. AU - Tobiska, W.K. AU - Evans, D. T1 - Climatology of extreme upper atmospheric heating events JO - Advances in Space Research JF - Advances in Space Research Y1 - 2005/12/15/ VL - 36 IS - 12 M3 - Article SP - 2506 EP - 2510 SN - 02731177 AB - Abstract: We use a trio of empirical models to estimate the relative contributions of solar extreme ultraviolet heating, Joule heating and particle heating to the global energy budget of the earth’s upper atmosphere. Daily power values are derived from the models for the three heat sources. The SOLAR2000 solar irradiance specification model provides estimates of the daily extreme EUV solar power input. Geomagnetic power comes from a combination of satellite-derived electron precipitation power and an empirical model of Joule power derived from hemispherically integrated estimates of high-latitude heating, which we discuss in this paper. From 1975 to mid-2002, the average daily contributions were electrons: 51GW, Joule: 95GW and solar: 784GW. Joule and particle heating combine to provide more than 17% of the total global upper atmospheric heating. For the top 10% and 1% of heating events, contributions rise to ∼20% and 25%, respectively. In the top 15 heating events, geomagnetic power contributed more than 50% of the total power budget. During three events, the Joule power alone exceeded solar power. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE environment KW - ENERGY budget (Geophysics) KW - UPPER atmosphere KW - VAN Allen radiation belts KW - Atmospheric heating KW - Joule heating KW - Solar extreme ultraviolet heating KW - Solar irradiance KW - Space weather N1 - Accession Number: 19120168; Knipp, D.J. 1; Email Address: delores.knipp@usafa.af.mil Welliver, T. 1 McHarg, M.G. 1; Email Address: matthew.mcharg@usafa.af.mil Chun, F.K. 1; Email Address: francis.chun@usafa.af.mil Tobiska, W.K. 2; Email Address: ktobiska@spacenvironment.net Evans, D. 3; Email Address: devans@sec.noaa.gov; Affiliation: 1: Department of Physics, US Air Force Academy, Suite 2A25, Fairchild Hall, CO 80840, USA 2: Space Environment Technologies, Pacific Palisades, CA 90272, USA 3: Space Environment Center, NOAA, Boulder, CO 80303, USA; Source Info: Dec2005, Vol. 36 Issue 12, p2506; Subject Term: SPACE environment; Subject Term: ENERGY budget (Geophysics); Subject Term: UPPER atmosphere; Subject Term: VAN Allen radiation belts; Author-Supplied Keyword: Atmospheric heating; Author-Supplied Keyword: Joule heating; Author-Supplied Keyword: Solar extreme ultraviolet heating; Author-Supplied Keyword: Solar irradiance; Author-Supplied Keyword: Space weather; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.asr.2004.02.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19120168&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mandell, M.J. AU - Cooke, D.L. AU - Davis, V.A. AU - Jongeward, G.A. AU - Gardner, B.M. AU - Hilmer, R.A. AU - Ray, K.P. AU - Lai, S.T. AU - Krause, L.H. T1 - Modeling the charging of geosynchronous and interplanetary spacecraft using Nascap-2k JO - Advances in Space Research JF - Advances in Space Research Y1 - 2005/12/15/ VL - 36 IS - 12 M3 - Article SP - 2511 EP - 2515 SN - 02731177 AB - Abstract: Nascap-2k is the updated version of the NASCAP/GEO spacecraft charging analysis code. In addition to packaging the physical content of NASCAP/GEO in a modern way, Nascap-2k incorporates other plasma analysis codes (in particular, the DynaPAC code) in order to extend its applicability to a wide variety of plasma environments. Nascap-2k also includes an interactive Object Toolkit for defining spacecraft surface models for analysis. In this paper we focus on the tenuous plasma charging capabilities of the code, with application to DSCS-III (geosynchronous environment), STEREO (solar wind environment) and MESSENGER (solar wind environment near 0.4AU). [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles KW - SOLAR activity KW - STELLAR winds KW - SOLAR corona KW - Geosynchronous orbit KW - Mercury orbit environment KW - Nascap-2k KW - Solar wind environment KW - Spacecraft charging N1 - Accession Number: 19120169; Mandell, M.J. 1; Email Address: myron.j.mandell@saic.com Cooke, D.L. 2 Davis, V.A. 1 Jongeward, G.A. 1 Gardner, B.M. 1 Hilmer, R.A. 2 Ray, K.P. 2 Lai, S.T. 2 Krause, L.H. 3; Affiliation: 1: Science Applications International Corporation, 10260 Campus Point Drive, San Diego, CA 92121, USA 2: Air Force Research Laboratory (VSBX), 29 Randolph Road, Hanscom AFB, Bedford, MA 01731, USA 3: United States Air Force Academy, USAFA, CO 80840, USA; Source Info: Dec2005, Vol. 36 Issue 12, p2511; Subject Term: SPACE vehicles; Subject Term: SOLAR activity; Subject Term: STELLAR winds; Subject Term: SOLAR corona; Author-Supplied Keyword: Geosynchronous orbit; Author-Supplied Keyword: Mercury orbit environment; Author-Supplied Keyword: Nascap-2k; Author-Supplied Keyword: Solar wind environment; Author-Supplied Keyword: Spacecraft charging; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.asr.2004.04.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19120169&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhao AU - J. AU - Schaefer AU - D. W. AU - Shi AU - D. AU - Lian AU - Brown AU - Beaucage AU - G. AU - Wang AU - L. AU - Ewing AU - R. C. T1 - How Does Surface Modification Aid in the Dispersion of Carbon Nanofibers? JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2005/12/15/ VL - 109 IS - 49 M3 - Article SP - 23351 EP - 23357 SN - 15206106 AB - Small-angle light scattering is used to assess the dispersion behavior of vapor-grown carbon nanofibers suspended in water. These data provide the first insights into the mechanism by which surface treatment promotes dispersion. Both acid-treated and untreated nanofibers exhibit hierarchical morphology consisting of small-scale aggregates (small bundles) that agglomerate to form fractal clusters that eventually precipitate. Although the morphology of the aggregates and agglomerates is nearly independent of surface treatment, their time evolution is quite different. The time evolution of the small-scale bundles is studied by extracting the size distribution from the angle-dependence of the scattered intensity, using the maximum entropy method in conjunction with a simplified tube form factor. The bundles consist of multiple tubes possibly aggregated side-by-side. Acid oxidation has little effect on this bundle morphology. Rather acid treatment inhibits agglomeration of the bundles. The time evolution of agglomeration is followed by fitting the scattering data to a generalized fractal model. Agglomerates appear immediately after cessation of sonication for untreated fibers but only after hours for treated fibers. Eventually, however, both systems precipitate. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SONICATION KW - LIGHT -- Scattering KW - MAXIMUM entropy method KW - APPROXIMATION theory N1 - Accession Number: 20705552; Zhao J. 1 Schaefer D. W. 1 Shi D. 1 Lian Brown Beaucage G. 1 Wang L. 1 Ewing R. C. 1; Affiliation: 1: Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, Ohio 45221-0012, Air Force Research Laboratory, Materials and Manufacturing Directorate, MLBCO, WPAFB, Ohio 45433-7750, Manuel Lujan Jr. Neutron Scattering Center , Los Alamos National Laboratory, Los Alamos, New Mexico 87545, and Departments of Geological Science and Materials Science & Engineering, University of Michigan, Ann Arbor, Michigan 48109; Source Info: Dec2005, Vol. 109 Issue 49, p23351; Subject Term: SONICATION; Subject Term: LIGHT -- Scattering; Subject Term: MAXIMUM entropy method; Subject Term: APPROXIMATION theory; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20705552&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Slaughter, D.R. AU - Accatino, M.R. AU - Bernstein, A. AU - Church, J.A. AU - Descalle, M.A. AU - Gosnell, T.B. AU - Hall, J.M. AU - Loshak, A. AU - Manatt, D.R. AU - Mauger, G.J. AU - Moore, T.L. AU - Norman, E.B. AU - Pohl, B.A. AU - Pruet, J.A. AU - Petersen, D.C. AU - Walling, R.S. AU - Weirup, D.L. AU - Prussin, S.G. AU - McDowell, M. T1 - Preliminary results utilizing high-energy fission product γ-rays to detect fissionable material in cargo JO - Nuclear Instruments & Methods in Physics Research Section B JF - Nuclear Instruments & Methods in Physics Research Section B Y1 - 2005/12/15/ VL - 241 IS - 1-4 M3 - Article SP - 777 EP - 781 SN - 0168583X AB - Abstract: A concept for detecting the presence of special nuclear material (235U or 239Pu) concealed in intermodal cargo containers is described. It is based on interrogation with a pulsed beam of 7MeV neutrons that produce fission events and their β-delayed neutron emission or β-delayed high-energy γ radiation between beam pulses provide the detection signature. Fission product β-delayed γ-rays above 3MeV are nearly 10 times more abundant than β-delayed neutrons and are distinct from natural radioactivity and from nearly all of the induced activity in a normal cargo. Detector backgrounds and potential interferences with the fission signature radiation have been identified and quantified. [Copyright &y& Elsevier] AB - Copyright of Nuclear Instruments & Methods in Physics Research Section B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIOACTIVE substances KW - NUCLEAR fission KW - DELAYED neutrons KW - DELAYED protons KW - Active interrogation KW - Cargo screening KW - Fission product γ radiation KW - Neutron source N1 - Accession Number: 19140233; Slaughter, D.R. 1; Email Address: slaughter1@llnl.gov Accatino, M.R. 1 Bernstein, A. 1 Church, J.A. 1 Descalle, M.A. 1 Gosnell, T.B. 1 Hall, J.M. 1 Loshak, A. 1 Manatt, D.R. 1 Mauger, G.J. 1 Moore, T.L. 1 Norman, E.B. 1 Pohl, B.A. 1 Pruet, J.A. 1 Petersen, D.C. 1 Walling, R.S. 1 Weirup, D.L. 1 Prussin, S.G. 2 McDowell, M. 3; Affiliation: 1: Lawrence Livermore National Laboratory, Livermore, CA, United States 2: University of California, Berkeley, CA, United States 3: US Air Force Academy, Colorado Springs, CO, United States; Source Info: Dec2005, Vol. 241 Issue 1-4, p777; Subject Term: RADIOACTIVE substances; Subject Term: NUCLEAR fission; Subject Term: DELAYED neutrons; Subject Term: DELAYED protons; Author-Supplied Keyword: Active interrogation; Author-Supplied Keyword: Cargo screening; Author-Supplied Keyword: Fission product γ radiation; Author-Supplied Keyword: Neutron source; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19140233&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tamirisakandala, S. AU - Bhat, R.B. AU - Tiley, J.S. AU - Miracle, D.B. T1 - Grain refinement of cast titanium alloys via trace boron addition JO - Scripta Materialia JF - Scripta Materialia Y1 - 2005/12/15/ VL - 53 IS - 12 M3 - Article SP - 1421 EP - 1426 SN - 13596462 AB - Abstract: The grain size of as-cast Ti–6Al–4V is reduced by about an order of magnitude from 1700 to 200μm with an addition of 0.1wt.% boron. A much weaker dependence of reduction in grain size is obtained for boron additions from >0.1% to 1.0%. Similar trends were observed in boron-modified as-cast Ti–6Al–2Sn–4Zr–2Mo–0.1Si. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - COBALT-titanium-carbon alloys KW - NONMETALS KW - MICROMECHANICS KW - Casting KW - Grain refining KW - Microstructure KW - Titanium alloys N1 - Accession Number: 18745365; Tamirisakandala, S. 1,2; Email Address: sesh.tamirisa@fnnet.wpafbml.org Bhat, R.B. 1,3 Tiley, J.S. 1 Miracle, D.B. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Bldg 655, 2230 Tenth Street, Wright-Patterson AFB, OH 45433, United States 2: Department of Mechanical Engineering, Ohio University, Athens, OH 45701, United States 3: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, United States; Source Info: Dec2005, Vol. 53 Issue 12, p1421; Subject Term: TITANIUM alloys; Subject Term: COBALT-titanium-carbon alloys; Subject Term: NONMETALS; Subject Term: MICROMECHANICS; Author-Supplied Keyword: Casting; Author-Supplied Keyword: Grain refining; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Titanium alloys; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.scriptamat.2005.08.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18745365&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kranthi, Nakka S. AU - Nizam, M. O. AU - Kirawanich, Phumin AU - Islam, Naz E. AU - Sharma, A. K. AU - Lucero, S. L. T1 - Fields analysis of enhanced charge collection in nanoscale grated photo detectors. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/12/12/ VL - 87 IS - 24 M3 - Article SP - 244101 PB - American Institute of Physics SN - 00036951 AB - Electromagnetic energy transmitted through the gratings in the active region of a metal-semiconductor-metal detector was analyzed to account for enhanced collection efficiency. This study shows that a wall-like grating on the surface of the active region results in enhanced transmission of electromagnetic energy, which contributes to greater carrier production and higher collection efficiency. Analyses also show that the collection efficiency can be further improved with square gratings on the surface of the active region. A maximum in collection efficiency is achieved when the square gratings cover about 65.5% of the active region surface. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC waves KW - METAL detectors KW - ELECTROMAGNETISM KW - ELECTRONIC apparatus & appliances KW - SEMICONDUCTORS KW - PHYSICS N1 - Accession Number: 19246480; Kranthi, Nakka S. 1 Nizam, M. O. 1 Kirawanich, Phumin 1 Islam, Naz E. 1; Email Address: islamn@missouri.edu Sharma, A. K. 2 Lucero, S. L. 2; Affiliation: 1: Department of Electrical and Computer Engineering, University of Missouri, Columbia, Missouri 65211 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117; Source Info: 12/12/2005, Vol. 87 Issue 24, p244101; Subject Term: ELECTROMAGNETIC waves; Subject Term: METAL detectors; Subject Term: ELECTROMAGNETISM; Subject Term: ELECTRONIC apparatus & appliances; Subject Term: SEMICONDUCTORS; Subject Term: PHYSICS; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 2 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.2143137 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19246480&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sherer, Scott E. AU - Scott, James N. T1 - High-order compact finite-difference methods on general overset grids JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2005/12/10/ VL - 210 IS - 2 M3 - Article SP - 459 EP - 496 SN - 00219991 AB - Abstract: This work investigates the coupling of a very high-order finite-difference algorithm for the solution of conservation laws on general curvilinear meshes with overset-grid techniques originally developed to address complex geometric configurations. The solver portion of the algorithm is based on Padé-type compact finite-differences of up to sixth-order, with up to 10th-order filters employed to remove spurious waves generated by grid non-uniformities, boundary conditions and flow non-linearities. The overset-grid approach is utilized as both a domain-decomposition paradigm for implementation of the algorithm on massively parallel machines and as a means for handling geometric complexity in the computational domain. Two key features have been implemented in the current work; the ability of the high-order algorithm to accommodate holes cut in grids by the overset-grid approach, and the use of high-order interpolation at non-coincident grid overlaps. Several high-order/high-accuracy interpolation methods were considered, and a high-order, explicit, non-optimized Lagrangian method was found to be the most accurate and robust for this application. Several two-dimensional benchmark problems were examined to validate the interpolation methods and the overall algorithm. These included grid-to-grid interpolation of analytic test functions, the inviscid convection of a vortex, laminar flow over single- and double-cylinder configurations, and the scattering of acoustic waves from one- and three-cylinder configurations. The employment of the overset-grid techniques, coupled with high-order interpolation at overset boundaries, was found to be an effective way of employing the high-order algorithm for more complex geometries than was previously possible. [Copyright &y& Elsevier] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUID dynamics KW - NUMERICAL analysis KW - BOUNDARY value problems KW - LAMINAR flow KW - 02.70.Bf KW - 47.11.+j KW - Computational fluid dynamics KW - High-order methods KW - Interpolation KW - Overset-grid methods N1 - Accession Number: 18242029; Sherer, Scott E. 1; Email Address: scott.sherer@wpafb.af.mil Scott, James N. 2; Affiliation: 1: Computational Sciences Branch, Air Vehicles Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, United States 2: Department of Aerospace Engineering and Aviation, The Ohio State University, Columbus, OH 43210, United States; Source Info: Dec2005, Vol. 210 Issue 2, p459; Subject Term: FLUID dynamics; Subject Term: NUMERICAL analysis; Subject Term: BOUNDARY value problems; Subject Term: LAMINAR flow; Author-Supplied Keyword: 02.70.Bf; Author-Supplied Keyword: 47.11.+j; Author-Supplied Keyword: Computational fluid dynamics; Author-Supplied Keyword: High-order methods; Author-Supplied Keyword: Interpolation; Author-Supplied Keyword: Overset-grid methods; Number of Pages: 38p; Document Type: Article L3 - 10.1016/j.jcp.2005.04.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18242029&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Trinkle, Dallas R. AU - Woodward, Christopher T1 - The Chemistry of Deformation: How Solutes Soften Pure Metals. JO - Science JF - Science Y1 - 2005/12/09/ VL - 310 IS - 5754 M3 - Article SP - 1665 EP - 1667 SN - 00368075 AB - Solutes have been added to strengthen elemental metals, generating usable materials for millennia; in the 1960s, solutes were found to also soften metals. Despite the empirical correlation between the "electron number" of the solute and the change in strength of the material to which it is added, the mechanism responsible for softening is poorly understood. Using state-of-the-art quantum-mechanical methods, we studied the direct interaction of transition-metal solutes with dislocations in molybdenum. The interaction increases dramatically with increasing electron number and strongly influences the mechanisms responsible for plasticity in these materials. Our quantitative model explains solution softening of metals by using changes in energy and stress scales of plasticity from solutes. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS KW - MOLYBDENUM KW - PLASTICITY KW - COHESION KW - INORGANIC chemistry KW - DEFORMATIONS (Mechanics) N1 - Accession Number: 19190598; Trinkle, Dallas R. 1; Email Address: dallas.trinkle@wpafb.af.mil Woodward, Christopher 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH 45433-7817, USA.; Source Info: 12/9/2005, Vol. 310 Issue 5754, p1665; Subject Term: METALS; Subject Term: MOLYBDENUM; Subject Term: PLASTICITY; Subject Term: COHESION; Subject Term: INORGANIC chemistry; Subject Term: DEFORMATIONS (Mechanics); NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 3p; Illustrations: 2 Color Photographs, 2 Graphs; Document Type: Article; Full Text Word Count: 2908 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19190598&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Attar, P.J. AU - Dowell, E.H. T1 - A reduced order system ID approach to the modelling of nonlinear structural behavior in aeroelasticity JO - Journal of Fluids & Structures JF - Journal of Fluids & Structures Y1 - 2005/12/08/ VL - 21 IS - 5-7 M3 - Article SP - 531 EP - 542 SN - 08899746 AB - Abstract: A method is proposed for identifying a set of reduced order, nonlinear equations which describe the structural behavior of aeroelastic configurations. The strain energy of the system is written as a (polynomial) function of the structures’ modal amplitudes. The unknown coefficients of these polynomials are then computed using the strain energy data calculated from a steady state, high-order, nonlinear finite element model. The resulting strain energy expression can then be used to develop the modal equations of motion. From these equations, zero and nonzero angle of attack flutter and limit cycle oscillation data are computed for a delta wing aeroelastic model. The results computed using the reduced order model compare well with those from a high-fidelity aeroelastic model and to experiment. A two to three order of magnitude reduction in the number of structural equations and a two order of magnitude reduction in total computational time is accomplished using the current reduced order method. [Copyright &y& Elsevier] AB - Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR evolution equations KW - AEROELASTICITY KW - FINITE element method KW - EQUATIONS KW - Nonlinear aeroelasticity KW - System identification N1 - Accession Number: 19118039; Attar, P.J. 1; Email Address: peter.attar@wpafb.af.mil Dowell, E.H. 2; Email Address: dowell@ee.duke.edu; Affiliation: 1: Air Force Research Laboratory, AFRL/VAAC, 2210 Eighth St., Bldg 146, WPAFB,OH 45433-7512, USA 2: Pratt School of Engineering, Box 90300, Duke University, Durham NC 27708, USA; Source Info: Dec2005, Vol. 21 Issue 5-7, p531; Subject Term: NONLINEAR evolution equations; Subject Term: AEROELASTICITY; Subject Term: FINITE element method; Subject Term: EQUATIONS; Author-Supplied Keyword: Nonlinear aeroelasticity; Author-Supplied Keyword: System identification; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.jfluidstructs.2005.08.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19118039&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Shea, M.A. T1 - Planetary atmospheres JO - Advances in Space Research JF - Advances in Space Research Y1 - 2005/12/05/ VL - 36 IS - 11 M3 - Editorial SP - 2137 EP - 2137 SN - 02731177 N1 - Accession Number: 19108353; Shea, M.A. 1; Email Address: sssrc@msn.com; Affiliation: 1: ASR, Emeritus, Air Force Research Laboratory (VSBX), Hanscom AFB, Bedford, MA 01731-3010, USA; Source Info: Dec2005, Vol. 36 Issue 11, p2137; Number of Pages: 1p; Document Type: Editorial L3 - 10.1016/j.asr.2005.10.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19108353&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Emergo, R. L. S. AU - Wu, J. Z. AU - Haugan, T. J. AU - Barnes, P. N. T1 - Tuning porosity of YBa2Cu3O7-δ vicinal films by insertion of Y2BaCuO5 nanoparticles. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/12/05/ VL - 87 IS - 23 M3 - Article SP - 232503 PB - American Institute of Physics SN - 00036951 AB - High critical current density (Jc) is the most critical specification for high-temperature-superconductor-coated conductors as required by numerous electric power-related applications. This has motivated an intensive research effort on the effects of microstructure on Jc. By growing YBa2Cu3O7-δ (YBCO) films at a small vicinal angle [R. L. S. Emergo, J. Z. Wu, T. Aytug, and D. K. Christen, Appl. Phys. Lett. 85, 618 (2004)] we have recently obtained a highly porous structure in these films accompanied with a significantly enhanced Jc. This result raises a challenging question on whether the porosity can be tailored in YBCO films to allow a higher Jc. In this study, we have explored the insertion of Y2BaCuO5 (211) nanoparticles in vicinal YBCO thick films to alter the strain at the nanometer scale; a nearly doubled pore density was obtained. A further improved Jc as the consequence of the enhanced pore density in these films suggests a direct correlation between microstructure and Jc and projects an even higher Jc in YBCO films with microstructure engineered optimally at a nanometer scale. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH temperatures KW - DENSITY KW - SUPERCONDUCTORS KW - MICROSTRUCTURE KW - ELECTRIC power KW - THIN films KW - POROSITY N1 - Accession Number: 19214787; Emergo, R. L. S. 1; Email Address: remergo@ku.edu Wu, J. Z. 1 Haugan, T. J. 2 Barnes, P. N. 2; Affiliation: 1: Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7919; Source Info: 12/5/2005, Vol. 87 Issue 23, p232503; Subject Term: HIGH temperatures; Subject Term: DENSITY; Subject Term: SUPERCONDUCTORS; Subject Term: MICROSTRUCTURE; Subject Term: ELECTRIC power; Subject Term: THIN films; Subject Term: POROSITY; Number of Pages: 3p; Illustrations: 2 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.2140467 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19214787&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Silver, Mark J. AU - Peterson, Lee D. AU - Erwin, R. Scott T1 - Predictive Elastothermodynamic Damping in Finite Element Models by Using a Perturbation Formulation. JO - AIAA Journal JF - AIAA Journal Y1 - 2005/12// VL - 43 IS - 12 M3 - Article SP - 2646 EP - 2653 SN - 00011452 AB - A method is presented by which elastothermodynamic damping can be included in finite element formulations for design analysis. In this method, elastothermodynamic damping theory is combined with a perturbation method previously developed for viscoelastic modeling. A key aspect of this approach is that it projects elastothermodynamic damping onto the undamped mode shapes of the structure. A finite element formulation is developed and presented for beams in both bending and extension. The finite element formulation creates nonsparse, nonsymmetric damping and stiffness matrices. Results with this method for various cases are discussed. After validation against the classic Zener model damping prediction, the method is applied to the analysis of damping in a three-dimensional truss. The results show that elastothermodynamic damping is higher for modes with a larger portion of their strain energy due to local member bending rather than extension. Through examples it is shown that to maximize elastothermodynamic damping in a truss, both the member cross section and the truss mode shapes must be considered. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DAMPING (Mechanics) KW - FINITE element method KW - PERTURBATION (Quantum dynamics) KW - PERTURBATION (Mathematics) KW - QUANTUM theory KW - UNIVERSAL algebra KW - SYSTEMS design KW - SYSTEM analysis N1 - Accession Number: 19273741; Silver, Mark J. 1; Email Address: Mark.Silver@Colorado.edu Peterson, Lee D. 1; Email Address: Lee.Peterson@Colorado.edu Erwin, R. Scott 2; Email Address: Richard.Erwin@kirtland.af.mil; Affiliation: 1: University of Colorado, Boulder, Colorado 80309-0429 2: U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117-5776; Source Info: Dec2005, Vol. 43 Issue 12, p2646; Subject Term: DAMPING (Mechanics); Subject Term: FINITE element method; Subject Term: PERTURBATION (Quantum dynamics); Subject Term: PERTURBATION (Mathematics); Subject Term: QUANTUM theory; Subject Term: UNIVERSAL algebra; Subject Term: SYSTEMS design; Subject Term: SYSTEM analysis; Number of Pages: 8p; Illustrations: 2 Diagrams, 3 Charts, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19273741&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fullerton, Richard T1 - The Future: Oil, America, and the Air Force. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2005///Winter2005 VL - 19 IS - 4 M3 - Article SP - 27 EP - 31 PB - Superintendent of Documents SN - 1555385X AB - The article focuses on the role of oil industry and its implications in modern conflicts and tension in the U.S. The perception that oil shortage would bring chaos is unrelated and far from the reality that the world recoverable oil can still supply for the rest of the twentieth century. The oil embargo does not affect the economy of the country but the economic and oil policies are partly to blamed. Unless there is no substitute for oil, military aircraft would still be dependent on oil. KW - PETROLEUM law & legislation KW - SUPPLY & demand KW - ENERGY shortages KW - ECONOMIC policy KW - UNITED States N1 - Accession Number: 19222872; Fullerton, Richard 1; Affiliation: 1: Professor and Head, Department of Economics and Geography, US Air Force Academy; Source Info: Winter2005, Vol. 19 Issue 4, p27; Subject Term: PETROLEUM law & legislation; Subject Term: SUPPLY & demand; Subject Term: ENERGY shortages; Subject Term: ECONOMIC policy; Subject Term: UNITED States; NAICS/Industry Codes: 324191 Petroleum Lubricating Oil and Grease Manufacturing; NAICS/Industry Codes: 412110 Petroleum and petroleum products merchant wholesalers; NAICS/Industry Codes: 424710 Petroleum Bulk Stations and Terminals; NAICS/Industry Codes: 486110 Pipeline Transportation of Crude Oil; NAICS/Industry Codes: 211111 Crude Petroleum and Natural Gas Extraction; NAICS/Industry Codes: 424720 Petroleum and Petroleum Products Merchant Wholesalers (except Bulk Stations and Terminals); Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19222872&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mauk, Heidi V. AU - Hingley, Dan T1 - Student understanding of induced current: Using tutorials in introductory physics to teach electricity and magnetism. JO - American Journal of Physics JF - American Journal of Physics Y1 - 2005/12// VL - 73 IS - 12 M3 - Article SP - 1164 EP - 1171 SN - 00029505 AB - Previous research indicates significant improvement in student conceptual understanding of physics topics after instruction with Tutorials in Introductory Physics at the University of Washington, Seattle, Washington. However, assessment of the effectiveness of tutorials at other institutions is crucial: We conducted such a field test at the United States Air Force Academy, Colorado. Students using the tutorials were compared to students using the standard curriculum, students using tutorial pretests only, and students in the honors program. Assessment was based on conceptual questions involving induced current and force. Our results show that students using the tutorials in a modified setting outperformed the control group and rose to the level of performance of the honors students. Our analysis of student reasoning indicates areas where further development of the tutorials is warranted. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Physics is the property of American Association of Physics Teachers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS KW - STUDENTS KW - ELECTRIC currents KW - CURRICULA (Courses of study) KW - PHYSICAL sciences KW - ELECTRICITY KW - SEATTLE (Wash.) KW - WASHINGTON (State) KW - UNIVERSITY of Washington N1 - Accession Number: 19526178; Mauk, Heidi V. 1; Email Address: heidi.mauk@usafa.af.mil Hingley, Dan 1; Affiliation: 1: Department of Physics, United States Air Force Academy, Colorado 80840.; Source Info: Dec2005, Vol. 73 Issue 12, p1164; Subject Term: PHYSICS; Subject Term: STUDENTS; Subject Term: ELECTRIC currents; Subject Term: CURRICULA (Courses of study); Subject Term: PHYSICAL sciences; Subject Term: ELECTRICITY; Subject Term: SEATTLE (Wash.); Subject Term: WASHINGTON (State); Company/Entity: UNIVERSITY of Washington; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 8p; Document Type: Article L3 - 10.1119/1.2117167 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19526178&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schmidt, Norman B. AU - Kotov, Roman AU - Lerew, Darin R. AU - Joiner Jr., Thomas E. AU - Ialongo, Nicholas S. T1 - Evaluating Latent Discontinuity in Cognitive Vulnerability to Panic: A Taxometric Investigation. JO - Cognitive Therapy & Research JF - Cognitive Therapy & Research Y1 - 2005/12// VL - 29 IS - 6 M3 - Article SP - 673 EP - 690 PB - Springer Science & Business Media B.V. SN - 01475916 AB - Taxometrics is a statistical tool that can be used to discern psychopathological categories from continua. In this study, taxometric analyses were conducted to determine whether a psychopathological category (or taxon) underlies a cognitive vulnerability to panic (i.e., fear of anxiety symptoms and body vigilance). The construct was operationalized with 3 variables: the Anxiety Sensitivity Index, the Body Sensations Questionnaire, and the Body Vigilance Scale. The test was performed in a large nonclinical sample (N = 1,224 ). Analyses and consistency tests support the taxonic conjecture for the existence of a latent cognitive vulnerability taxon with a base rate of about 18% in this population. Moreover, tests of the taxon’s utility indicated that taxon membership has incremental validity in predicting future panic attacks. [ABSTRACT FROM AUTHOR] AB - Copyright of Cognitive Therapy & Research is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COGNITIVE therapy KW - PSYCHOTHERAPY KW - NUMERICAL taxonomy KW - PANIC attacks KW - PANIC disorders KW - anxiety KW - cognitive vulnerability KW - panic KW - taxometrics N1 - Accession Number: 21195638; Schmidt, Norman B. 1,2; Email Address: schmidt@psy.fsu.edu Kotov, Roman 3 Lerew, Darin R. 4 Joiner Jr., Thomas E. 5 Ialongo, Nicholas S. 6; Affiliation: 1: The Ohio State University, Columbus, Ohio 2: Department of Psychology, Florida State University, Tallahassee, Florida 32306 3: The University of Iowa, Iowa City, Iowa 4: United States Air Force Academy, Colorado Springs, Colorado 5: Florida State University, Tallahassee, Florida 6: Johns Hopkins University, Baltimore, Maryland; Source Info: Dec2005, Vol. 29 Issue 6, p673; Subject Term: COGNITIVE therapy; Subject Term: PSYCHOTHERAPY; Subject Term: NUMERICAL taxonomy; Subject Term: PANIC attacks; Subject Term: PANIC disorders; Author-Supplied Keyword: anxiety; Author-Supplied Keyword: cognitive vulnerability; Author-Supplied Keyword: panic; Author-Supplied Keyword: taxometrics; Number of Pages: 18p; Illustrations: 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1007/s10608-005-9632-y UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21195638&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buryachenko, V.A. AU - Roy, A. AU - Lafdi, K. AU - Anderson, K.L. AU - Chellapilla, S. T1 - Multi-scale mechanics of nanocomposites including interface: Experimental and numerical investigation JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2005/12// VL - 65 IS - 15/16 M3 - Article SP - 2435 EP - 2465 SN - 02663538 AB - Abstract: The addition of minor amounts of fillers that have characteristic dimensions on the nanometer length scale to polymer matrix-based materials has attracted wide attention. A high aspect ratio of nanoelements and extraordinary mechanical properties (strength and flexibility) provide the ultimate reinforcement for the next generation of extremely lightweight but highly elastic and very strong advanced composite materials. However, the resultant physical behavior imparted by such an addition, has been, to date, difficult to quantify, especially for advanced thermoset composites. In an effort to better understand the phenomenological changes across multiple length- and time-scales, we first review currently reported methods of calculating nanoelement reinforced composite mechanical properties. Secondly, we describe recent experimental data along with a multi-scale modeling methodology for the calculation of elastic constants and local/interface properties for systems with statistically homogeneous distribution of embedded nanofillers (nanofibers, nanoparticles, nanoplates, or other heterogeneities, that are either aligned or randomly oriented). [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS KW - MATRICES KW - METHODOLOGY KW - COMPOSITE materials KW - A. Microstructures KW - B. Elastic material KW - B. Inhomogeneous material N1 - Accession Number: 18952613; Buryachenko, V.A. 1 Roy, A. 2; Email Address: Ajit.Roy@wpafb.af.mil Lafdi, K. 1 Anderson, K.L. 2 Chellapilla, S. 1; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469-0168, United States 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7750, United States; Source Info: Dec2005, Vol. 65 Issue 15/16, p2435; Subject Term: MATERIALS; Subject Term: MATRICES; Subject Term: METHODOLOGY; Subject Term: COMPOSITE materials; Author-Supplied Keyword: A. Microstructures; Author-Supplied Keyword: B. Elastic material; Author-Supplied Keyword: B. Inhomogeneous material; Number of Pages: 31p; Document Type: Article L3 - 10.1016/j.compscitech.2005.08.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18952613&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miracle, D.B. T1 - Metal matrix composites – From science to technological significance JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2005/12// VL - 65 IS - 15/16 M3 - Article SP - 2526 EP - 2540 SN - 02663538 AB - Abstract: Over the past two decades – a period coinciding with publication of Composites Science and Technology – metal matrix composites (MMCs) have been transformed from a topic of scientific and intellectual interest to a material of broad technological and commercial significance. The worldwide MMC markets in 1999 accounted for 2500 metric tons valued at over $100M. Important MMC applications in the ground transportation (auto and rail), thermal management, aerospace, industrial, recreational and infrastructure industries have been enabled by functional properties that include high structural efficiency, excellent wear resistance, and attractive thermal and electrical characteristics. A suite of challenging technical issues has been overcome, including affordable primary and secondary processing, material design and development methodologies, and characterization and control of interfacial properties. This article describes the technological features that characterize the MMC industry. Matrix/reinforcement systems and primary and secondary processes of commercial significance will be broadly described. Several metrics that underscore the growing maturity of the MMC industry will be discussed, including the emergence of a second tier support industry and the growth of standardized materials and methods. MMC applications in the major markets of ground transportation, thermal management, aerospace, industrial, recreational and infrastructure will be described. Successful commercialization strategies will be discussed and insights for achieving expanded MMC applications will be given. A forward look at candidate approaches for the next generation of MMCs will be provided, including projections of new MMC paradigms. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATRICES KW - TRANSPORTATION KW - AERONAUTICS KW - METALLIC composites KW - Application KW - MMC KW - Processing N1 - Accession Number: 18952621; Miracle, D.B. 1; Email Address: daniel.miracle@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, 2230 Tenth Street, Dayton, OH 454336533, USA; Source Info: Dec2005, Vol. 65 Issue 15/16, p2526; Subject Term: MATRICES; Subject Term: TRANSPORTATION; Subject Term: AERONAUTICS; Subject Term: METALLIC composites; Author-Supplied Keyword: Application; Author-Supplied Keyword: MMC; Author-Supplied Keyword: Processing; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 488990 Other support activities for transportation; NAICS/Industry Codes: 488999 All Other Support Activities for Transportation; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.compscitech.2005.05.027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18952621&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Emond, Claude AU - Michalek, Joel E. AU - Birnbaum, Linda S. AU - DeVito, Michael J. T1 - Comparison of the Use of a Physiologically Based Pharmacokinetic Model and a Classical Pharmacokinetic Model for Dioxin Exposure Assessments. JO - Environmental Health Perspectives JF - Environmental Health Perspectives Y1 - 2005/12// VL - 113 IS - 12 M3 - Article SP - 1666 PB - Superintendent of Documents SN - 00916765 AB - In epidemiologic studies, exposure assessments of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) assume a fixed elimination rate. Recent data suggest a dose-dependent elimination rate for TCDD. A physiologically based pharmacokinetic (PBPK) model, which uses a body-burden-dependent elimination rate, was developed previously in rodents to describe the pharmacokinetics of TCDD and has been extrapolated to human exposure for this study. Optimizations were performed using data from a random selection of veterans from the Ranch Hand cohort and data from a human volunteer who was exposed to TCDD. Assessment of this PBPK model used additional data from the Ranch Hand cohort and a clinical report of two women exposed to TCDD. This PBPK model suggests that previous exposure assessments may have significantly underestimated peak blood concentrations, resulting in potential exposure misclassifications. Application of a PBPK model that incorporates an inducible elimination of TCDD may improve the exposure assessments in epidemiologic studies of TCDD. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Health Perspectives is the property of Superintendent of Documents and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIOXINS KW - TETRACHLORODIBENZODIOXIN KW - POLYCHLORINATED dibenzodioxins KW - AGRICULTURAL chemicals KW - AGRICULTURE KW - PHARMACOKINETICS KW - CHEMICAL kinetics KW - PHARMACOLOGY KW - COHORT analysis KW - dioxin KW - epidemiology KW - PBPK KW - pharmacokinetic KW - physiologically based pharmacokinetic model KW - Ranch Hand KW - risk assessment N1 - Accession Number: 19030630; Emond, Claude 1,2 Michalek, Joel E. 3 Birnbaum, Linda S. 2 DeVito, Michael J. 2; Email Address: devito.mike@epa.gov; Affiliation: 1: National Research Council, National Academy of Sciences, Washington, DC, USA 2: Pharmacokinetics Branch, Environmental Toxicology Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA 3: Air Force Research Laboratory, Brooks City-Base, Texas, USA; Source Info: Dec2005, Vol. 113 Issue 12, p1666; Subject Term: DIOXINS; Subject Term: TETRACHLORODIBENZODIOXIN; Subject Term: POLYCHLORINATED dibenzodioxins; Subject Term: AGRICULTURAL chemicals; Subject Term: AGRICULTURE; Subject Term: PHARMACOKINETICS; Subject Term: CHEMICAL kinetics; Subject Term: PHARMACOLOGY; Subject Term: COHORT analysis; Author-Supplied Keyword: dioxin; Author-Supplied Keyword: epidemiology; Author-Supplied Keyword: PBPK; Author-Supplied Keyword: pharmacokinetic; Author-Supplied Keyword: physiologically based pharmacokinetic model; Author-Supplied Keyword: Ranch Hand; Author-Supplied Keyword: risk assessment; NAICS/Industry Codes: 325320 Pesticide and Other Agricultural Chemical Manufacturing; NAICS/Industry Codes: 418390 Agricultural chemical and other farm supplies merchant wholesalers; NAICS/Industry Codes: 424910 Farm Supplies Merchant Wholesalers; Number of Pages: 9p; Illustrations: 2 Color Photographs, 1 Chart; Document Type: Article L3 - 10.1289/ehp.8016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19030630&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nelson, D. A. AU - Curlee, J. S. AU - Curran, A. R. AU - Ziriax, J. M. AU - Mason, P. A. T1 - Determining localized garment insulation values from manikin studies: computational method and results. JO - European Journal of Applied Physiology JF - European Journal of Applied Physiology Y1 - 2005/12// VL - 95 IS - 5/6 M3 - Article SP - 464 EP - 473 SN - 14396319 AB - The localized thermal insulation value expresses a garment’s thermal resistance over the region which is covered by the garment, rather than over the entire surface of a subject or manikin. The determination of localized garment insulation values is critical to the development of high-resolution models of sensible heat exchange. A method is presented for determining and validating localized garment insulation values, based on whole-body insulation values ( clo units) and using computer-aided design and thermal analysis software. Localized insulation values are presented for a catalog consisting of 106 garments and verified using computer-generated models. The values presented are suitable for use on volume element-based or surface element-based models of heat transfer involving clothed subjects. [ABSTRACT FROM AUTHOR] AB - Copyright of European Journal of Applied Physiology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT transfer KW - CLOTHING & dress KW - THERMAL insulation KW - COMPUTER-aided design KW - THERMAL analysis KW - HUMAN body KW - Clothing KW - Heat transfer KW - Insulation KW - Sensible heat N1 - Accession Number: 18905566; Nelson, D. A. 1; Email Address: danelson@mtu.edu Curlee, J. S. 2,3 Curran, A. R. 3 Ziriax, J. M. 4 Mason, P. A. 5; Affiliation: 1: Department of Biomedical Engineering, Michigan Technological University, Houghton, MI 49931, USA 2: Department of Mechanical Engineering–Engineering Mechanics, Michigan Technological University, Houghton, MI 49931, USA 3: ThermoAnalytics, Inc. , Calumet, MI 49913, USA 4: U.S. Naval Health Research Center Detachment, Brooks City Base, TX 78235, USA 5: U.S. Air Force Research Laboratory, Directed Energy Bioeffects Division, Brooks City Base, TX 78235, USA; Source Info: Dec2005, Vol. 95 Issue 5/6, p464; Subject Term: HEAT transfer; Subject Term: CLOTHING & dress; Subject Term: THERMAL insulation; Subject Term: COMPUTER-aided design; Subject Term: THERMAL analysis; Subject Term: HUMAN body; Author-Supplied Keyword: Clothing; Author-Supplied Keyword: Heat transfer; Author-Supplied Keyword: Insulation; Author-Supplied Keyword: Sensible heat; NAICS/Industry Codes: 414110 Clothing and clothing accessories merchant wholesalers; NAICS/Industry Codes: 315210 Cut and Sew Apparel Contractors; NAICS/Industry Codes: 448140 Family Clothing Stores; NAICS/Industry Codes: 448190 Other Clothing Stores; NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 238310 Drywall and Insulation Contractors; NAICS/Industry Codes: 423330 Roofing, Siding, and Insulation Material Merchant Wholesalers; Number of Pages: 10p; Illustrations: 2 Charts, 2 Graphs; Document Type: Article L3 - 10.1007/s00421-005-0033-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18905566&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bentley, Brooke AU - De Jong, Marla J. AU - Moser, Debra K. AU - Peden, Ann R. T1 - Factors related to nonadherence to low sodium diet recommendations in heart failure patients JO - European Journal of Cardiovascular Nursing JF - European Journal of Cardiovascular Nursing Y1 - 2005/12// VL - 4 IS - 4 M3 - Article SP - 331 EP - 336 SN - 14745151 AB - Abstract: Background: A low sodium diet is a cornerstone of nonpharmacologic therapy for heart failure patients. Although nonadherence is common, little is known about why heart failure patients fail to adhere to this diet. Aims: The purpose of this study was to explore the experience of heart failure patients in following a low sodium diet. Methods and results: We conducted a qualitative descriptive study with a convenience sample of 20 participants. Interviews were conducted and analyzed for themes. The data reflected three primary themes about nonadherence to the low sodium diet: lack of knowledge, interference with socialization, and lack of food selections. Participants expressed a need for details about low sodium food selection, food preparation, and rationale for the diet. Lack of knowledge also was manifested as diet confusion for participants who required additional dietary restrictions. Interference with socialization was manifested by patients'' experiences with family conflict when family members ate high-sodium foods and difficulty eating out. The theme of lack of low sodium food selections was reflected by comments about limited food choices, and lack of palatability. Conclusion: Researchers and clinicians need to consider patients'' perceptions as they generate and evaluate interventions to increase adherence to a low sodium diet. [Copyright &y& Elsevier] AB - Copyright of European Journal of Cardiovascular Nursing is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEART diseases KW - CARDIOVASCULAR diseases KW - CARDIOLOGY KW - MEDICAL personnel KW - HEART failure KW - Adherence KW - Dietary sodium KW - Qualitative research N1 - Accession Number: 19184901; Bentley, Brooke 1,2; Email Address: Brooke.Bentley@EKU.EDU De Jong, Marla J. 1,3 Moser, Debra K. 1 Peden, Ann R. 1; Affiliation: 1: University of Kentucky, College of Nursing, Lexington, KY, United States 2: Eastern Kentucky University, College of Health Sciences, Richmond, KY, United States 3: United States Air Force, Lexington, KY, United States; Source Info: Dec2005, Vol. 4 Issue 4, p331; Subject Term: HEART diseases; Subject Term: CARDIOVASCULAR diseases; Subject Term: CARDIOLOGY; Subject Term: MEDICAL personnel; Subject Term: HEART failure; Author-Supplied Keyword: Adherence; Author-Supplied Keyword: Dietary sodium; Author-Supplied Keyword: Qualitative research; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.ejcnurse.2005.04.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19184901&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Golden, P. J. AU - Nicholas, T. T1 - The effect of angle on dovetail fretting experiments in Ti-6Al-4V. JO - Fatigue & Fracture of Engineering Materials & Structures JF - Fatigue & Fracture of Engineering Materials & Structures Y1 - 2005/12// VL - 28 IS - 12 M3 - Article SP - 1169 EP - 1175 PB - Wiley-Blackwell SN - 8756758X AB - The objective of this work was to compare the fretting fatigue performance of Ti-6Al-4V dovetail specimens on Ti-6Al-4V pads having various contact angles typical of engine hardware; 35°, 45° and 55° dovetail angles were considered. The dovetail fixtures were instrumented with strain gages so that the local normal and shear contact forces could be calculated. The contact force hysteresis loops were recorded showing the stick-slip history. At R= 0.1, gross slip was observed for several thousand cycles followed by partial slip after the average coefficient of friction increased. At R= 0.5, gross slip was present only during the first half cycle. During partial slip, the slope of the shear versus normal force was a function of the dovetail angle. The local contact loads, therefore, differed for the same remotely applied force. Despite this, the fretting fatigue life depended primarily on the remotely applied load not dovetail angle. [ABSTRACT FROM AUTHOR] AB - Copyright of Fatigue & Fracture of Engineering Materials & Structures is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRETTING corrosion KW - MATERIALS -- Fatigue KW - STRAINS & stresses (Mechanics) KW - STRENGTH of materials KW - SHEAR (Mechanics) KW - DEFORMATIONS (Mechanics) KW - dovetail KW - fretting fatigue KW - Ti-6Al-4V KW - titanium N1 - Accession Number: 18980104; Golden, P. J. 1; Email Address: patrick.golden@wpafb.af.mil Nicholas, T. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433–7817, USA 2: Air Force Institute of Technology, Wright-Patterson AFB, OH 45433, USA; Source Info: Dec2005, Vol. 28 Issue 12, p1169; Subject Term: FRETTING corrosion; Subject Term: MATERIALS -- Fatigue; Subject Term: STRAINS & stresses (Mechanics); Subject Term: STRENGTH of materials; Subject Term: SHEAR (Mechanics); Subject Term: DEFORMATIONS (Mechanics); Author-Supplied Keyword: dovetail; Author-Supplied Keyword: fretting fatigue; Author-Supplied Keyword: Ti-6Al-4V; Author-Supplied Keyword: titanium; Number of Pages: 7p; Illustrations: 2 Black and White Photographs, 2 Diagrams, 2 Charts, 9 Graphs; Document Type: Article L3 - 10.1111/j.1460-2695.2005.00956.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18980104&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kahre, Melinda A. AU - Murphy, James R. AU - Chanover, Nancy J. AU - Africano, John L. AU - Roberts, Lewis C. AU - Kervin, Paul W. T1 - Observing the martian surface albedo pattern: Comparing the AEOS and TES data sets JO - ICARUS JF - ICARUS Y1 - 2005/12// VL - 179 IS - 1 M3 - Article SP - 55 EP - 62 SN - 00191035 AB - Abstract: High spatial resolution images of Mars were acquired with the Advanced Electro-Optical System (AEOS) 3.63-meter telescope at the Maui Space Surveillance System (MSSS) during both the 2001 and 2003 Mars apparitions. Comparisons are made of the surface albedo patterns obtained from these AEOS images to the surface albedo maps constructed from the Mars Global Surveyor (MGS) Thermal Emission Spectrometer (TES) data taken during the same time periods. These comparisons demonstrate that the images provide albedo information in a limited area surrounding the sub-Earth point that is consistent with the TES-derived albedo field. Additionally, it is shown that by employing adaptive optics (AO), the typical ground-based observing season of Mars can be extended. This is the only known published AO data set of Mars with temporal coverage over an entire apparition. Changes in the surface albedo affect the local ground temperature, which impacts the depth of the planetary boundary layer (PBL) above the surface. Since it is the state of the PBL that controls surface/atmospheric interaction, albedo variations have the power to alter the amount of dust that is lifted. A one-dimensional radiative/convective version of the NASA Ames Mars General Circulation Model is used to demonstrate that the measured albedo variations can alter the daytime ground temperatures by as much as 5 K, which in turn alters the structure of the planetary boundary layer (PBL). Therefore, albedo changes are thermodynamically important, and the ability to characterize them, should orbital observations become unavailable, is a valuable capability. [Copyright &y& Elsevier] AB - Copyright of ICARUS is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASTROPHYSICAL radiation KW - AUTOMATIC data collection systems KW - EARTH temperature KW - ATMOSPHERE KW - atmosphere ( Mars ) KW - Atmospheres KW - Data reduction techniques KW - Image processing KW - Structure KW - surface ( Mars ) N1 - Accession Number: 19009381; Kahre, Melinda A. 1; Email Address: kahrema@nmsu.edu Murphy, James R. 1 Chanover, Nancy J. 1 Africano, John L. 2 Roberts, Lewis C. 2 Kervin, Paul W. 3; Affiliation: 1: Department of Astronomy, New Mexico State University, Las Cruces, NM 88003, USA 2: The Boeing Company, 535 Lipoa Pkwy, Suite 200, Kihei, HI 96753, USA 3: Detachment 15, Air Force Research Laboratory, 535 Lipoa Pkwy, Suite 200, Kihei, HI 96753, USA; Source Info: Dec2005, Vol. 179 Issue 1, p55; Subject Term: ASTROPHYSICAL radiation; Subject Term: AUTOMATIC data collection systems; Subject Term: EARTH temperature; Subject Term: ATMOSPHERE; Author-Supplied Keyword: atmosphere ( Mars ); Author-Supplied Keyword: Atmospheres; Author-Supplied Keyword: Data reduction techniques; Author-Supplied Keyword: Image processing; Author-Supplied Keyword: Structure; Author-Supplied Keyword: surface ( Mars ); Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.icarus.2005.06.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19009381&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ulander, L. M. H. AU - Lundberg, M. AU - Pierson, W. AU - Gustavsson, A. T1 - Change detection for low-frequency SAR ground surveillance. JO - IEE Proceedings -- Radar, Sonar & Navigation JF - IEE Proceedings -- Radar, Sonar & Navigation Y1 - 2005/12// VL - 152 IS - 6 M3 - Article SP - 413 EP - 420 PB - Institution of Engineering & Technology SN - 13502395 AB - Change detection using ultra-wideband synthetic aperture radar (SAR) images in the low end of the VHF band is shown to provide excellent performance for detection of vehicle-sized objects in forest concealment. Two different change detection algorithms are discussed and their performance evaluated. The two algorithms are based on similar statistical hypothesis testing, but differ in that one operates on complex (coherent change detection) whereas the other uses magnitude (incoherent change detection) image data. Algorithm evaluation is performed using radar data acquired with the airborne CARABAS-II SAR in northern Sweden. The data were collected during a change detection experiment with concealed vehicles in boreal forests (stand volume ca. 100 m3/ha). Results show that coherent change detection gives slightly better performance using full spatial resolution of the images, whereas the incoherent change detection gives better performance when spatial averaging (2×2 resolution cells) is included. A comparison with detecting vehicles using only single-pass images shows an increase of false alarms of one to two orders of magnitude at the same probability of detection. [ABSTRACT FROM AUTHOR] AB - Copyright of IEE Proceedings -- Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURVEILLANCE radar KW - INSTRUMENT landing systems KW - RADAR defense networks KW - EXPERIMENTAL design KW - STATISTICAL hypothesis testing N1 - Accession Number: 19007481; Ulander, L. M. H. 1; Email Address: ulander@foi.se Lundberg, M. 1 Pierson, W. 2 Gustavsson, A. 1; Affiliation: 1: Swedish Defence Research Agency (FOI), Department of Radar Systems, PO Box 1165, SE-581 11, Linköping, Sweden 2: Wright Patterson Air Force Base, US Air Force Research Laboratory, Dayton, OH 45433, USA; Source Info: Dec2005, Vol. 152 Issue 6, p413; Subject Term: SURVEILLANCE radar; Subject Term: INSTRUMENT landing systems; Subject Term: RADAR defense networks; Subject Term: EXPERIMENTAL design; Subject Term: STATISTICAL hypothesis testing; NAICS/Industry Codes: 517919 All Other Telecommunications; Number of Pages: 8p; Document Type: Article L3 - 10.1049/ip-rsn:20050002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19007481&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Krishna, Sanjay AU - Oh-Hyun Kwon AU - Hayat, Majeed M. T1 - Theoretical Investigation of Quantum-Dot Avalanche Photodiodes for Mid-infrared Applications. JO - IEEE Journal of Quantum Electronics JF - IEEE Journal of Quantum Electronics Y1 - 2005/12// VL - 41 IS - 12 M3 - Article SP - 1468 EP - 1473 SN - 00189197 AB - A novel midinfrared sensor, called the quantum-dot avalanche photodiode (QDAP), is proposed which is expected to have improved signal-to-noise ratio (SNR) in the presence of Johnson noise over its quantum-dot (QD) counterpart In the QDAP, an intersubband QD detector is coupled with a thin, low-noise GaAs avalanche layer through a tunnel barrier. The avalanche layer provides the necessary photocurrent gain required to overcome Johnson noise and nearly achieve the dark-current-limited SNR of the QD detector. In the proposed three-terminal device, the applied biases of the QDsdetector and the avalanche-photodiode sections of the QDAP are controlled separately. This feature permits the control of the QDs responsivity and dark current independently of the operating avalanche gain, thereby allowing the optimization of the avalanche multiplication factor to maximize the photocurrent's SNR. Notably, a heterojunction potential-barrier layer can also be utilized to further improve the SNR. For example, when the standard deviation of the Johnson noise is four times greater than the dark current, calculations show that the SNR enhancement offered by an avalanche multiplication factor of S results in relaxing the cooling requirement from 20 to 80 K. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Journal of Quantum Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTODIODES KW - QUANTUM electronics KW - SEMICONDUCTOR diodes KW - AVALANCHE diodes KW - ANALYSIS of variance KW - DETECTORS KW - Avalanche gain KW - avalanche photodiodes KW - dark current KW - excess noise factor KW - infrared detector KW - quantum-dot detectors KW - responsivity N1 - Accession Number: 19160334; Krishna, Sanjay 1; Email Address: skrishna@chtm.unm.edu Oh-Hyun Kwon 2; Email Address: ohhyun.kwon@gmail.com Hayat, Majeed M. 3; Email Address: hayat@ece.unm.edu; Affiliation: 1: Center for High Technology Materials and the Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM 87106 USA. 2: Air Force Research Laboratory, Wright Paterson Air Force Base, OH 45433 USA. 3: Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM 8713 1-0001 USA.; Source Info: Dec2005, Vol. 41 Issue 12, p1468; Subject Term: PHOTODIODES; Subject Term: QUANTUM electronics; Subject Term: SEMICONDUCTOR diodes; Subject Term: AVALANCHE diodes; Subject Term: ANALYSIS of variance; Subject Term: DETECTORS; Author-Supplied Keyword: Avalanche gain; Author-Supplied Keyword: avalanche photodiodes; Author-Supplied Keyword: dark current; Author-Supplied Keyword: excess noise factor; Author-Supplied Keyword: infrared detector; Author-Supplied Keyword: quantum-dot detectors; Author-Supplied Keyword: responsivity; Number of Pages: 6p; Document Type: Article L3 - 10.1109/JQE.2005.858791 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19160334&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Balster, Eric J. AU - Zheng, Yuan F. AU - Ewing, Robert L. T1 - Feature-Based Wavelet Shrinkage Algorithm for Image Denoising. JO - IEEE Transactions on Image Processing JF - IEEE Transactions on Image Processing Y1 - 2005/12// VL - 14 IS - 12 M3 - Article SP - 2024 EP - 2039 SN - 10577149 AB - A selective wavelet shrinkage algorithm for digital image denoising is presented. The performance of this method is an improvement upon other methods proposed in the literature and is algorithmically simple for large computational savings. The improved performance and computational speed of the proposed wavelet shrinkage algorithm is presented and experimentally compared with established methods. The denoising method incorporated in the proposed algorithm involves a two-threshold validation process for real-time selection of wavelet coefficients. The two-threshold criteria selects wavelet coefficients based on their absolute value, spatial regularity, and regularity across multiresolution scales. The proposed algorithm takes image features into consideration in the selection process. Statistically, most images have regular features resulting in connected subband coefficients. Therefore, the resulting subbands of wavelet transformed images in large part do not contain isolated coefficients. In the proposed algorithm, coefficients are selected due to their magnitude, and only a subset of those selected coefficients which exhibit a spatially regular behavior remain for image reconstruction. Therefore, two thresholds are used in the coefficient selection process. The first threshold is used to distinguish coefficients of large magnitude and the second is used to distinguish coefficients of spatial regularity. The performance of the proposed wavelet denoising technique is an improvement upon several other established wavelet denoising techniques, as well as being computationally efficient to facilitate real-time image-processing applications. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Image Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVELETS (Mathematics) KW - ALGORITHMS KW - TIME series analysis KW - MEASURE algebras KW - SPATIAL analysis (Statistics) KW - CLUSTER analysis (Statistics) KW - Image denoising KW - selective wavelet shrinkage KW - two-threshold criteria N1 - Accession Number: 19160314; Balster, Eric J. 1 Zheng, Yuan F. 2 Ewing, Robert L. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433-7334 USA. 2: Ohio State University, Columbus, OH 43210 USA.; Source Info: Dec2005, Vol. 14 Issue 12, p2024; Subject Term: WAVELETS (Mathematics); Subject Term: ALGORITHMS; Subject Term: TIME series analysis; Subject Term: MEASURE algebras; Subject Term: SPATIAL analysis (Statistics); Subject Term: CLUSTER analysis (Statistics); Author-Supplied Keyword: Image denoising; Author-Supplied Keyword: selective wavelet shrinkage; Author-Supplied Keyword: two-threshold criteria; Number of Pages: 16p; Document Type: Article L3 - 10.1109/TIP.2005.859385 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19160314&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Subramanyam, Guru AU - Ahamed, Faruque AU - Biggers, Rand AU - Campbell, Angela T1 - DESIGN CONSIDERATIONS FOR A NOVEL COPLANAR WAVEGUIDE BASED FERROELECTRIC VARACTOR SHUNT SWITCH. JO - Integrated Ferroelectrics JF - Integrated Ferroelectrics Y1 - 2005/12// VL - 77 IS - 1 M3 - Article SP - 207 EP - 216 SN - 10584587 AB - Novel ferroelectric variable capacitor (varactor) shunt switches have been designed, and experimentally verified recently. The varactor shunt switches are designed for microwave and millimeterwave switching applications, based on the nonlinear dielectric tunability of the Ba 0.6 Sr 0.4 TiO 3 (BST) thin-films. Nanostructured BST thin-films with dielectric tunability as high as 350% were used in this study. The device consists of a coplanar waveguide line loaded by a ferroelectric varactor. The large capacitance of the varactor at zero bias shunts the input signal to ground, thus isolating the output port, resulting in the OFF state of the device. When one applies a bias voltage corresponding of approximately 10 V (a dc electric field of ∼⃒ 250 kV/cm), the varactor's capacitance is reduced to a minimum, allowing maximum transmission to the output, thus resulting in the ON state of the device. The microwave switching performance of the varactor shunt switch is compared with the RF MEMS switches for potential applications at microwave and millimeterwave frequencies. [ABSTRACT FROM AUTHOR] AB - Copyright of Integrated Ferroelectrics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVEGUIDES KW - ELECTRIC waves KW - ELECTRIC conductors KW - FERROELECTRIC crystals KW - FERROELECTRIC storage cells KW - MICROWAVE devices KW - ELECTRONIC apparatus & appliances KW - ferroelectric thin-film KW - Tunable microwave dielectrics KW - varactor shunt switch KW - varactors N1 - Accession Number: 19346164; Subramanyam, Guru 1; Email Address: guru.subramanyam@notes.udayton.edu Ahamed, Faruque 1 Biggers, Rand 2 Campbell, Angela 2; Affiliation: 1: Department of ECE, University of Dayton, Dayton, OH, 45469, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH, 45433, USA; Source Info: 2005, Vol. 77 Issue 1, p207; Subject Term: WAVEGUIDES; Subject Term: ELECTRIC waves; Subject Term: ELECTRIC conductors; Subject Term: FERROELECTRIC crystals; Subject Term: FERROELECTRIC storage cells; Subject Term: MICROWAVE devices; Subject Term: ELECTRONIC apparatus & appliances; Author-Supplied Keyword: ferroelectric thin-film; Author-Supplied Keyword: Tunable microwave dielectrics; Author-Supplied Keyword: varactor shunt switch; Author-Supplied Keyword: varactors; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; Number of Pages: 10p; Illustrations: 4 Diagrams, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1080/10584580500414499 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19346164&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Levin, G. A. AU - Barnes, P. N. AU - Amemiya, Naoyuki AU - Kasai, Satoshi AU - Yoda, Keiji AU - Zhenan Jiang AU - Polyanskii, A. T1 - Magnetization losses in multiply connected YBa2Cu3O6+x-coated conductors. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2005/12//12/1/2005 VL - 98 IS - 11 M3 - Article SP - 113909 PB - American Institute of Physics SN - 00218979 AB - We report the results of a magnetization loss study in experimental multifilament, multiply connected coated superconductors exposed to time-varying magnetic field. In these samples, the superconducting layer is divided into parallel stripes segregated by nonsuperconducting grooves. In order to facilitate the current sharing between the stripes and thus increase the reliability of the striated conductors, a sparse network of superconducting bridges is superimposed on the striated film. We find that the presence of the bridges does not substantially increase the magnetization losses, both hysteresis and coupling, as long as the number of bridges per length of the sample is not large. These results indicate that it is possible to find a reasonable compromise between the competing requirements of connectivity and loss reduction in an ac-tolerant version of the high-temperature coated conductors specifically designed for ac power applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTORS KW - MAGNETIZATION KW - FERROMAGNETISM KW - MAGNETISM KW - MAGNETIC induction KW - SOLID state electronics KW - CRYSTALS KW - ELECTRIC conductivity N1 - Accession Number: 19215015; Levin, G. A. 1; Email Address: george.levin@wpafb.af.mil Barnes, P. N. 1 Amemiya, Naoyuki 2 Kasai, Satoshi 2 Yoda, Keiji 2 Zhenan Jiang 2 Polyanskii, A. 3; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, 1950 Fifth Street, Building 450, Wright-Patterson Air Force Base, Ohio 45433 2: Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya, Yokohama 240-8501, Japan 3: 1500 Engineering Drive, ERB Applied Superconductivity Center, University of Wisconsin, Madison, Wisconsin 53706; Source Info: 12/1/2005, Vol. 98 Issue 11, p113909; Subject Term: SEMICONDUCTORS; Subject Term: MAGNETIZATION; Subject Term: FERROMAGNETISM; Subject Term: MAGNETISM; Subject Term: MAGNETIC induction; Subject Term: SOLID state electronics; Subject Term: CRYSTALS; Subject Term: ELECTRIC conductivity; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 11p; Illustrations: 7 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1063/1.2139832 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19215015&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Newman, Mark AU - Hatfield, Kirk AU - Hayworth, Joel AU - Rao, P.S.C. AU - Stauffer, Tom T1 - A hybrid method for inverse characterization of subsurface contaminant flux JO - Journal of Contaminant Hydrology JF - Journal of Contaminant Hydrology Y1 - 2005/12// VL - 81 IS - 1-4 M3 - Article SP - 34 EP - 62 SN - 01697722 AB - Abstract: The methods presented in this work provide a potential tool for characterizing contaminant source zones in terms of mass flux. The problem was conceptualized by considering contaminant transport through a vertical “flux plane” located between a source zone and a downgradient region where contaminant concentrations were measured. The goal was to develop a robust method capable of providing a statement of the magnitude and uncertainty associated with estimated contaminant mass flux values. In order to estimate the magnitude and transverse spatial distribution of mass flux through a plane, the problem was considered in an optimization framework. Two numerical optimization techniques were applied, simulated annealing (SA) and minimum relative entropy (MRE). The capabilities of the flux plane model and the numerical solution techniques were evaluated using data from a numerically generated test problem and a nonreactive tracer experiment performed in a three-dimensional aquifer model. Results demonstrate that SA is more robust and converges more quickly than MRE. However, SA is not capable of providing an estimate of the uncertainty associated with the simulated flux values. In contrast, MRE is not as robust as SA, but once in the neighborhood of the optimal solution, it is quite effective as a tool for inferring mass flux probability density functions, expected flux values, and confidence limits. A hybrid (SA-MRE) solution technique was developed in order to take advantage of the robust solution capabilities of SA and the uncertainty estimation capabilities of MRE. The coupled technique provided probability density functions and confidence intervals that would not have been available from an independent SA algorithm and they were obtained more efficiently than if provided by an independent MRE algorithm. [Copyright &y& Elsevier] AB - Copyright of Journal of Contaminant Hydrology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AQUIFERS KW - SIMULATED annealing (Mathematics) KW - COMBINATORIAL optimization KW - ENTROPY KW - Contaminant KW - Groundwater KW - Inverse problem KW - Mass flux KW - Minimum relative entropy KW - Simulated annealing N1 - Accession Number: 19058120; Newman, Mark 1; Email Address: markn@grove.ufl.edu Hatfield, Kirk 1 Hayworth, Joel 2 Rao, P.S.C. 3 Stauffer, Tom 4; Affiliation: 1: Department of Civil and Coastal Engineering, University of Florida, Gainesville, FL, United States 2: Hayworth Engineering Science, Panama City, FL, United States 3: School of Civil Engineering, Purdue University, West Lafayette, IN, United States 4: Air Force Research Laboratory, Tyndall AFB, FL, United States; Source Info: Dec2005, Vol. 81 Issue 1-4, p34; Subject Term: AQUIFERS; Subject Term: SIMULATED annealing (Mathematics); Subject Term: COMBINATORIAL optimization; Subject Term: ENTROPY; Author-Supplied Keyword: Contaminant; Author-Supplied Keyword: Groundwater; Author-Supplied Keyword: Inverse problem; Author-Supplied Keyword: Mass flux; Author-Supplied Keyword: Minimum relative entropy; Author-Supplied Keyword: Simulated annealing; Number of Pages: 29p; Document Type: Article L3 - 10.1016/j.jconhyd.2005.07.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19058120&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Interference from audio distracters during speechreading. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2005/12// VL - 118 IS - 6 M3 - Article SP - 3889 EP - 3902 SN - 00014966 AB - Although many audio-visual speech experiments have focused on situations where the presence of an incongruent visual speech signal influences the perceived utterance heard by an observer, there are also documented examples of a related effect in which the presence of an incongruent audio speech signal influences the perceived utterance seen by an observer. This study examined the effects that different distracting audio signals had on performance in a color and number keyword speechreading task. When the distracting sound was noise, time-reversed speech, or continuous speech, it had no effect on speechreading. However, when the distracting audio signal consisted of speech that started at the same time as the visual stimulus, speechreading performance was substantially degraded. This degradation did not depend on the semantic similarity between the target and masker speech, but it was substantially reduced when the onset of the audio speech was shifted relative to that of the visual stimulus. Overall, these results suggest that visual speech perception is impaired by the presence of a simultaneous mismatched audio speech signal, but that other types of audio distracters have little effect on speechreading performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIPREADING KW - SPEECH perception KW - SPEECH KW - COMMUNICATION KW - AUDIO communication KW - INTERFERENCE (Sound) N1 - Accession Number: 20263674; Brungart, Douglas S. 1; Email Address: douglas.brungart@wpafb.af.mil Simpson, Brian D. 1; Affiliation: 1: Air Force Research Laboratory, WPAFB, Ohio 45433; Source Info: Dec2005, Vol. 118 Issue 6, p3889; Subject Term: LIPREADING; Subject Term: SPEECH perception; Subject Term: SPEECH; Subject Term: COMMUNICATION; Subject Term: AUDIO communication; Subject Term: INTERFERENCE (Sound); Number of Pages: 14p; Illustrations: 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1121/1.2126932 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20263674&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mastroianni, George R. T1 - Occupations, Cultures, and Leadership in the Army and Air Force. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College Y1 - 2005///Winter2005-2006 VL - 35 IS - 4 M3 - Article SP - 76 EP - 90 SN - 00311723 AB - The article reports that the recent separation of the Air Force from the Army, coupled with the rapid rise of the Air Force as a powerful, independent institution since World War II, offers an opportunity to explore the organizational cultures of these two services in the United States, and to understand the implications of culture on leadership styles in each of the services. In the Army, the officers send the enlisted soldiers out to fight, while in the Air Force, the enlisted folks stay behind and the officers go out to do the job. The roles of officers, Non Commissioned Officers (NCOs), and enlisted members, and the relationships among them vary across the services. In the ground forces, NCOs are considered the backbone of the service. In the Air Force, many pilots depend on vital maintenance and logistical support from ground personnel, but relationships between officers and enlisted in the Air Force seem to be necessarily different from such relationships in the Army and Marine. KW - ARMED Forces KW - AIR defenses -- United States KW - PILOTS & pilotage KW - LOGISTICS KW - ARMY officers KW - MAINTENANCE KW - UNITED States N1 - Accession Number: 19222609; Mastroianni, George R. 1; Affiliation: 1: Member, Department of Behavioral Sciences and Leadership, US Air Force Academy.; Source Info: Winter2005-2006, Vol. 35 Issue 4, p76; Subject Term: ARMED Forces; Subject Term: AIR defenses -- United States; Subject Term: PILOTS & pilotage; Subject Term: LOGISTICS; Subject Term: ARMY officers; Subject Term: MAINTENANCE; Subject Term: UNITED States; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; NAICS/Industry Codes: 488330 Navigational Services to Shipping; NAICS/Industry Codes: 488332 Ship piloting services; NAICS/Industry Codes: 928110 National Security; Number of Pages: 15p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19222609&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Siskind, Lisa AU - Hammer, Bruce AU - Christensen, Nelson AU - Yepez, Jeffrey T1 - Multiple RF Coil Nuclear Magnetic Resonance Quantum Computing. JO - Quantum Information Processing JF - Quantum Information Processing Y1 - 2005/12// VL - 4 IS - 6 M3 - Article SP - 433 EP - 455 SN - 15700755 AB - Recent work has demonstrated the feasibility of using an array of quantum information processors connected via classical channels (type II quantum computer) to implement a quantum lattice-gas algorithm. This paper describes work towards constructing a new experimental set-up for a type II quantum computer. This set-up has new hardware and software specifications but does follow previously published approaches of operation encoding the initial mass density onto a twoqubit processor and using standard pulse techniques to step through the algorithm. New hardware for this system includes the ability to read both qubits at once, effectively reducing the processing time by twofold. Hardware changes also include the use of multiple coils controlled by a single spectrometer and a hardware switch. New software includes a top level control system for the spectrometer for quick experimental configuration as well as configurable modeling software to verify results. Results are presented here from a system with the final software implementations and the two channel spectrometer configuration run on a single prototype coil. Progress towards the final multi-coil implementation is described. [ABSTRACT FROM AUTHOR] AB - Copyright of Quantum Information Processing is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUCLEAR magnetic resonance KW - QUANTUM theory KW - QUANTUM computers KW - SPECTROMETERS KW - COMPUTER systems KW - HIGH performance processors KW - 03.67.Lx KW - diffusion equation KW - nuclear magnetic resonance KW - quantum computing KW - Quantum information processing KW - quantum lattice gas N1 - Accession Number: 20179859; Siskind, Lisa 1 Hammer, Bruce 1; Email Address: hammer@umn.edu Christensen, Nelson 2 Yepez, Jeffrey 3; Affiliation: 1: Center for Interdisciplinary Applications in Magnetic Resonance , University of Minnesota , Minneapolis 55455 USA 2: Carleton College , Northfield 55057 USA 3: Air Force Research Laboratory , Hanscom Field 01731 USA; Source Info: Dec2005, Vol. 4 Issue 6, p433; Subject Term: NUCLEAR magnetic resonance; Subject Term: QUANTUM theory; Subject Term: QUANTUM computers; Subject Term: SPECTROMETERS; Subject Term: COMPUTER systems; Subject Term: HIGH performance processors; Author-Supplied Keyword: 03.67.Lx; Author-Supplied Keyword: diffusion equation; Author-Supplied Keyword: nuclear magnetic resonance; Author-Supplied Keyword: quantum computing; Author-Supplied Keyword: Quantum information processing; Author-Supplied Keyword: quantum lattice gas; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; NAICS/Industry Codes: 541514 Computer systems design and related services (except video game design and development); NAICS/Industry Codes: 541512 Computer Systems Design Services; Number of Pages: 23p; Illustrations: 1 Black and White Photograph, 6 Diagrams, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1007/s11128-005-0007-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20179859&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yepez, Jeffrey AU - Vahala, George AU - Vahala, Linda T1 - Lattice Quantum Algorithm for the Schrödinger Wave Equation in 2+1 Dimensions with a Demonstration by Modeling Soliton Instabilities. JO - Quantum Information Processing JF - Quantum Information Processing Y1 - 2005/12// VL - 4 IS - 6 M3 - Article SP - 457 EP - 469 SN - 15700755 AB - A lattice-based quantum algorithm is presented to model the non-linear Schrödinger-like equations in 2 + 1 dimensions. In this lattice-based model, using only 2 qubits per node, a sequence of unitary collide (qubit–qubit interaction) and stream (qubit translation) operators locally evolve a discrete field of probability amplitudes that in the long-wavelength limit accurately approximates a non-relativistic scalar wave function. The collision operator locally entangles pairs of qubits followed by a streaming operator that spreads the entanglement throughout the two dimensional lattice. The quantum algorithmic scheme employs a non-linear potential that is proportional to the moduli square of the wave function. The model is tested on the transverse modulation instability of a one dimensional soliton wave train, both in its linear and non-linear stages. In the integrable cases where analytical solutions are available, the numerical predictions are in excellent agreement with the theory. [ABSTRACT FROM AUTHOR] AB - Copyright of Quantum Information Processing is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LATTICE dynamics KW - QUANTUM theory KW - ALGORITHMS KW - WAVE equation KW - WAVELENGTHS KW - SOLITONS KW - RESEARCH KW - 03.67.Lx KW - 05.45.Yv KW - computational physics KW - non-linear quantum mechanical instability KW - Non-linear Schrödinger wave equation KW - Non-linear Schrodinger wave equation KW - quantum algorithm KW - quantum computing KW - soliton dynamics N1 - Accession Number: 20179858; Yepez, Jeffrey 1; Email Address: jeffrey.yepez@hanscom.af.mil Vahala, George 2 Vahala, Linda 3; Affiliation: 1: Air Force Research Laboratory , Hanscom Field Bedford 01731 USA 2: Department of Physics , William & Mary , Williamsburg 23187 USA 3: College of Engineering & Technology , Old Dominion University , Norfolk 23529 USA; Source Info: Dec2005, Vol. 4 Issue 6, p457; Subject Term: LATTICE dynamics; Subject Term: QUANTUM theory; Subject Term: ALGORITHMS; Subject Term: WAVE equation; Subject Term: WAVELENGTHS; Subject Term: SOLITONS; Subject Term: RESEARCH; Author-Supplied Keyword: 03.67.Lx; Author-Supplied Keyword: 05.45.Yv; Author-Supplied Keyword: computational physics; Author-Supplied Keyword: non-linear quantum mechanical instability; Author-Supplied Keyword: Non-linear Schrödinger wave equation; Author-Supplied Keyword: Non-linear Schrodinger wave equation; Author-Supplied Keyword: quantum algorithm; Author-Supplied Keyword: quantum computing; Author-Supplied Keyword: soliton dynamics; Number of Pages: 13p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1007/s11128-005-0008-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20179858&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yepez, Jeffrey T1 - Relativistic Path Integral as a Lattice-based Quantum Algorithm. JO - Quantum Information Processing JF - Quantum Information Processing Y1 - 2005/12// VL - 4 IS - 6 M3 - Article SP - 471 EP - 509 SN - 15700755 AB - We demonstrate the equivalence of two representations of many-body relativistic quantum mechanics: the quantum lattice-gas method and the path integral method. The former serves as an efficient lattice-based quantum algorithm to simulate the space-time dynamics of a system of Dirac particles. [ABSTRACT FROM AUTHOR] AB - Copyright of Quantum Information Processing is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RELATIVISTIC mechanics KW - LATTICE dynamics KW - QUANTUM theory KW - ALGORITHMS KW - PATH integrals KW - DIRAC equation KW - 03.67.Lx KW - Dirac equation KW - many-body relativistic quantum mechanics KW - path integrals KW - quantum computing KW - quantum lattice gas N1 - Accession Number: 20179860; Yepez, Jeffrey 1; Email Address: Jeffrey.Yepez@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory , 29 Randolph Road Hanscom Field Massachusetts 01731 USA; Source Info: Dec2005, Vol. 4 Issue 6, p471; Subject Term: RELATIVISTIC mechanics; Subject Term: LATTICE dynamics; Subject Term: QUANTUM theory; Subject Term: ALGORITHMS; Subject Term: PATH integrals; Subject Term: DIRAC equation; Author-Supplied Keyword: 03.67.Lx; Author-Supplied Keyword: Dirac equation; Author-Supplied Keyword: many-body relativistic quantum mechanics; Author-Supplied Keyword: path integrals; Author-Supplied Keyword: quantum computing; Author-Supplied Keyword: quantum lattice gas; Number of Pages: 39p; Illustrations: 3 Diagrams, 2 Charts, 5 Graphs; Document Type: Article L3 - 10.1007/s11128-005-0009-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20179860&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ismail, I.M.K. AU - Hawkins, T. T1 - Kinetics of thermal decomposition of aluminium hydride: I-non-isothermal decomposition under vacuum and in inert atmosphere (argon) JO - Thermochimica Acta JF - Thermochimica Acta Y1 - 2005/12// VL - 439 IS - 1/2 M3 - Article SP - 32 EP - 43 SN - 00406031 AB - Abstract: Recently, interest in aluminium hydride (alane) as a rocket propulsion ingredient has been renewed due to improvements in its manufacturing process and an increase in thermal stability. When alane is added to solid propellant formulations, rocket performance is enhanced and the specific impulse increases. Preliminary work was performed at AFRL on the characterization and evaluation of two alane samples. Decomposition kinetics were determined from gravimetric TGA data and volumetric vacuum thermal stability (VTS) results. Chemical analysis showed the samples had 88.30% (by weight) aluminium and 9.96% hydrogen. The average density, as measured by helium pycnometery, was 1.486g/cc. Scanning electron microscopy showed that the particles were mostly composed of sharp edged crystallographic polyhedral such as simple cubes, cubic octahedrons and hexagonal prisms. Thermogravimetric analysis was utilized to investigate the decomposition kinetics of alane in argon atmosphere and to shed light on the mechanism of alane decomposition. Two kinetic models were successfully developed and used to propose a mechanism for the complete decomposition of alane and to predict its shelf-life during storage. Alane decomposes in two steps. The slowest (rate-determining) step is solely controlled by solid state nucleation of aluminium crystals; the fastest step is due to growth of the crystals. Thus, during decomposition, hydrogen gas is liberated and the initial polyhedral AlH3 crystals yield a final mix of amorphous aluminium and aluminium crystals. After establishing the kinetic model, prediction calculations indicated that alane can be stored in inert atmosphere at temperatures below 10°C for long periods of time (e.g., 15 years) without significant decomposition. After 15 years of storage, the kinetic model predicts ∼0.1% decomposition, but storage at higher temperatures (e.g. 30°C) is not recommended. [Copyright &y& Elsevier] AB - Copyright of Thermochimica Acta is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALLOGRAPHY KW - PHYSICAL sciences KW - ANISOTROPY KW - ELECTRON microscopy KW - Aluminium hydride KW - Decomposition KW - Model free kinetics KW - Shelf-life prediction KW - Thermal stability N1 - Accession Number: 19058647; Ismail, I.M.K.; Email Address: ismail.ismail@edwards.af.mil Hawkins, T. 1; Affiliation: 1: ERC Inc* at Air Force Research Laboratory/PRSP, Edwards Air Force Base, CA 93523-7689, USA; Source Info: Dec2005, Vol. 439 Issue 1/2, p32; Subject Term: CRYSTALLOGRAPHY; Subject Term: PHYSICAL sciences; Subject Term: ANISOTROPY; Subject Term: ELECTRON microscopy; Author-Supplied Keyword: Aluminium hydride; Author-Supplied Keyword: Decomposition; Author-Supplied Keyword: Model free kinetics; Author-Supplied Keyword: Shelf-life prediction; Author-Supplied Keyword: Thermal stability; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.tca.2005.08.029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19058647&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Redfield, Robin T1 - Large motion mountain biking dynamics. JO - Vehicle System Dynamics JF - Vehicle System Dynamics Y1 - 2005/12// VL - 43 IS - 12 M3 - Article SP - 845 EP - 865 SN - 00423114 AB - A bond graph model of a mountain bike and rider is created to develop baseline predictions for the performance of mountain bikes during large excursion maneuvers such as drops, jumps, crashes and rough terrain riding. The model assumes planar dynamics, a hard-tail (front suspension only) bicycle and a rider fixed to the bicycle. An algorithm is developed to allow tracking of a virtual tire-ground contact point for events that separate the wheels from the ground. This model would be most applicable to novice mountain bikers who maintain a nearly rigid relationship between their body and the bicycle as opposed to experienced riders who are versed in controlling the bicycle independent of the body. Simulations of a steep drop are performed for various initial conditions to qualitatively validate the predictions of the model. Results from this model are to be compared to experimental data and more complex models in later research, particularly models including a separate rider. The overarching goals of the research are to examine and understand the dynamics and control of interactions between a cyclist and mountain bike. Specific goals are to understand the improvement in performance afforded by an experienced rider, to hypothesize human control algorithms that allow riders to perform manoeuvres well and safely, to predict structural bike and body forces from these maneuvers and to quantify performance differences between hard-tail and full suspension bicycles. [ABSTRACT FROM AUTHOR] AB - Copyright of Vehicle System Dynamics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOUNTAIN biking KW - MOUNTAIN bikes KW - DYNAMICS KW - BOND graphs KW - BICYCLES KW - SIMULATION methods & models KW - Bond graph modelling KW - Mountain biking KW - Suspension systems KW - Vehicle dynamics N1 - Accession Number: 18970302; Redfield, Robin 1; Email Address: rob.redfield@usafa.af.mil; Affiliation: 1: Department of Engineering Mechanics, United States Air Force Academy, Colorado, 80840, USA; Source Info: Dec2005, Vol. 43 Issue 12, p845; Subject Term: MOUNTAIN biking; Subject Term: MOUNTAIN bikes; Subject Term: DYNAMICS; Subject Term: BOND graphs; Subject Term: BICYCLES; Subject Term: SIMULATION methods & models; Author-Supplied Keyword: Bond graph modelling; Author-Supplied Keyword: Mountain biking; Author-Supplied Keyword: Suspension systems; Author-Supplied Keyword: Vehicle dynamics; NAICS/Industry Codes: 336991 Motorcycle, Bicycle, and Parts Manufacturing; NAICS/Industry Codes: 451113 Cycling equipment and supplies specialty stores; NAICS/Industry Codes: 423910 Sporting and Recreational Goods and Supplies Merchant Wholesalers; NAICS/Industry Codes: 451110 Sporting Goods Stores; NAICS/Industry Codes: 414470 Amusement and sporting goods merchant wholesalers; NAICS/Industry Codes: 336990 Other transportation equipment manufacturing; Number of Pages: 21p; Document Type: Article L3 - 10.1080/00423110412331289844 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18970302&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fraga, Carlos G. AU - Corley, Cynthia A. T1 - The chemometric resolution and quantification of overlapped peaks form comprehensive two-dimensional liquid chromatography JO - Journal of Chromatography A JF - Journal of Chromatography A Y1 - 2005/11/25/ VL - 1096 IS - 1/2 M3 - Article SP - 40 EP - 49 SN - 00219673 AB - Abstract: The chemometric resolution and quantification of overlapped peaks from comprehensive two-dimensional (2D) liquid chromatography (LC×LC) data are demonstrated. The LC×LC data is produced from an in-house LC×LC analyzer that couples an anion-exchange column via a multi-port valve with a reversed-phase column connected to a UV absorbance detector. Three test mixtures, each containing a target analyte, are subjected to partial LC×LC separations to simulate likely cases of signal overlap. The resulting unresolved target-analyte signals are then analyzed by the standard-addition method and two chemometric methods. The LC×LC analyses of a test mixture and its corresponding standard-addition mixture results in two data matrices, one for each mixture. The stacking of these two data matrices produces a data structure that can then be analyzed by trilinear chemometric methods. One method, the generalized rank annihilation method (GRAM), uses a non-iterative eigenvalue-based approach to mathematically resolve overlapped trilinear signals. The other method, parallel factor analysis (PARAFAC), uses an iterative approach to resolve trilinear signals by the optimization of initial estimates using alternating least squares and signal constraints. In this paper, GRAM followed by PARAFAC analysis is shown to produce better qualitative and quantitative results than using each method separately. For instance, for all three test mixtures, the GRAM-PARAFAC approach improved quantitative accuracy by at least a factor of 4 and quantitative precision by more than 2 when compared to GRAM alone. This paper also introduces a new means of correcting run-to-run retention time shifts in comprehensive 2D chromatographic data. [Copyright &y& Elsevier] AB - Copyright of Journal of Chromatography A is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHROMATOGRAPHIC analysis KW - LIQUID chromatography KW - ENGINEERING instruments KW - MATHEMATICAL statistics KW - Complex mixtures KW - GRAM KW - Liquid chromatography KW - Liquid chromatography, two-dimensional KW - PARAFAC KW - Three-way data KW - Trilinear KW - two-dimensional N1 - Accession Number: 19060004; Fraga, Carlos G.; Email Address: carlos.fraga@usafa.af.mil Corley, Cynthia A. 1; Affiliation: 1: Department of Chemistry, 2355 Fairchild Dr., Suite 2N225, United States Air Force Academy, CO 80840-6230, USA; Source Info: Nov2005, Vol. 1096 Issue 1/2, p40; Subject Term: CHROMATOGRAPHIC analysis; Subject Term: LIQUID chromatography; Subject Term: ENGINEERING instruments; Subject Term: MATHEMATICAL statistics; Author-Supplied Keyword: Complex mixtures; Author-Supplied Keyword: GRAM; Author-Supplied Keyword: Liquid chromatography; Author-Supplied Keyword: Liquid chromatography, two-dimensional; Author-Supplied Keyword: PARAFAC; Author-Supplied Keyword: Three-way data; Author-Supplied Keyword: Trilinear; Author-Supplied Keyword: two-dimensional; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.chroma.2005.03.118 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19060004&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Deshmukh, S.P. AU - Mishra, R.S. AU - Kendig, K.L. T1 - Creep behavior of extruded Al–6Mg–1Sc–1Zr–10vol.% SiCp composite JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2005/11/25/ VL - 410-411 M3 - Article SP - 53 EP - 57 SN - 09215093 AB - Abstract: Creep tests were performed on a fine-grained Al–6Mg–1Sc–1Zr–10vol.% SiC particulate composite in the temperature range of 423–533K. The composite exhibited a high value of apparent stress exponent and apparent activation energy for creep at low temperatures. The flow behavior of this composite was characterized by the presence of a threshold stress. Incorporation of threshold stress into analysis reduces the high values of apparent stress exponent and activation energy to those anticipated from the creep of solid solution alloys. The result showed increased creep resistance in the composite compared to the unreinforced alloy. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEFORMATIONS (Mechanics) KW - CREEP (Materials) KW - EXTRUSION process KW - SOLID solutions KW - Aluminum matrix composite KW - Creep behavior KW - Threshold stress N1 - Accession Number: 19119857; Deshmukh, S.P. 1 Mishra, R.S. 1; Email Address: rsmishra@umr.edu Kendig, K.L. 2; Affiliation: 1: Department of Materials Science and Engineering, University of Missouri-Rolla, Rolla, MO 65409, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, OH 45433, USA; Source Info: Nov2005, Vol. 410-411, p53; Subject Term: DEFORMATIONS (Mechanics); Subject Term: CREEP (Materials); Subject Term: EXTRUSION process; Subject Term: SOLID solutions; Author-Supplied Keyword: Aluminum matrix composite; Author-Supplied Keyword: Creep behavior; Author-Supplied Keyword: Threshold stress; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.msea.2005.08.096 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19119857&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heckman, Emily M. AU - Hagen, Joshua A. AU - Yaney, Perry P. AU - Grote, James G. AU - Hopkins, F. Kenneth T1 - Processing techniques for deoxyribonucleic acid: Biopolymer for photonics applications. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/11/21/ VL - 87 IS - 21 M3 - Article SP - 211115 PB - American Institute of Physics SN - 00036951 AB - Marine-based deoxyribonucleic acid (DNA), purified from waste products of the Japanese fishing industry, has recently become a material of interest in photonics applications. Using highly purified DNA, unique processing techniques developed specifically to transform the purified DNA into a biopolymer suitable for optical device fabrication are reported. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUCLEIC acids KW - BIOMOLECULES KW - BIOPOLYMERS KW - POLYMERS KW - DNA KW - DEOXYRIBOSE KW - PHOTONICS KW - OPTICS N1 - Accession Number: 19005876; Heckman, Emily M. 1,2; Email Address: emily.heckman@wpafb.af.mil Hagen, Joshua A. 3 Yaney, Perry P. 2,4 Grote, James G. 5 Hopkins, F. Kenneth 5; Affiliation: 1: Electro-Optics Program, University of Dayton, Dayton, Ohio 45469-0245 2: Anteon Corporation, Dayton, Ohio 45431 3: Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, Ohio 45221 4: Electro-Optics Program and Department of Physics, University of Dayton, Dayton, Ohio 45469-2314 5: Materials and Manufacturing Directorate, U.S. Air Force Research Laboratory, Wright—Patterson Air Force Base, Ohio 45433-7707; Source Info: 11/21/2005, Vol. 87 Issue 21, p211115; Subject Term: NUCLEIC acids; Subject Term: BIOMOLECULES; Subject Term: BIOPOLYMERS; Subject Term: POLYMERS; Subject Term: DNA; Subject Term: DEOXYRIBOSE; Subject Term: PHOTONICS; Subject Term: OPTICS; Number of Pages: 3p; Illustrations: 1 Chart, 1 Graph; Document Type: Article L3 - 10.1063/1.2135205 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19005876&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brown, Janis M. AU - Anderson, David P. AU - Justice, Ryan S. AU - Lafdi, Khalid AU - Belfor, Max AU - Strong, Karla L. AU - Schaefer, Dale W. T1 - Hierarchical morphology of carbon single-walled nanotubes during sonication in an aliphatic diamine JO - Polymer JF - Polymer Y1 - 2005/11/21/ VL - 46 IS - 24 M3 - Article SP - 10854 EP - 10865 SN - 00323861 AB - Abstract: Dispersion of single-walled carbon nanotubes (SWNTs) by sonication into diamine curing agents is studied as a means to improve the dispersion of SWNTs in cured epoxy. Cured and uncured specimens are analyzed by light microscopy, electron microscopy, light scattering (LS), ultra small-angle X-ray scattering (USAXS), electrical conductivity and Raman spectroscopy. A flexible diamine (D2000) forms a stable SWNT suspension leading to good homogeneity in both the diamine and the cured epoxy. High resolution transmission electron microscopy (TEM) shows that small ropes of SWNTs (mostly under 15nm) are present despite the sample''s visual homogeneity. Further morphological investigation of cured and uncured D2000 resins using light and small-angle X-ray scattering indicates that the SWNTs are networked into fractal clusters that electrically percolate at low SWNTs loadings (0.05wt%). [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOTUBES KW - EPOXY resins KW - MICROSCOPY KW - OPTICS KW - LIGHT -- Scattering KW - Hierarchical morphology KW - Single-walled carbon nanotubes KW - Small-angle scattering N1 - Accession Number: 18965986; Brown, Janis M. 1; Email Address: janis.brown@wpafb.af.mil Anderson, David P. 2 Justice, Ryan S. 3 Lafdi, Khalid 2 Belfor, Max 3 Strong, Karla L. 1 Schaefer, Dale W. 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, MLBCO, WPAFB, OH 45433-7750, USA 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0168, USA 3: Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, OH 45221-0012, USA; Source Info: Nov2005, Vol. 46 Issue 24, p10854; Subject Term: NANOTUBES; Subject Term: EPOXY resins; Subject Term: MICROSCOPY; Subject Term: OPTICS; Subject Term: LIGHT -- Scattering; Author-Supplied Keyword: Hierarchical morphology; Author-Supplied Keyword: Single-walled carbon nanotubes; Author-Supplied Keyword: Small-angle scattering; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.polymer.2005.08.089 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18965986&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Muratore, C. AU - Voevodin, A.A. AU - Hu, J.J. AU - Jones, J.G. AU - Zabinski, J.S. T1 - Growth and characterization of nanocomposite yttria-stabilized zirconia with Ag and Mo JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2005/11/21/ VL - 200 IS - 5/6 M3 - Article SP - 1549 EP - 1554 SN - 02578972 AB - Abstract: The effect of metal additions on the structure and properties of nanocrystalline yttria-stabilized zirconia (YSZ) thin films deposited by a hybrid magnetron sputtering/pulsed laser deposition technique was studied. The materials are candidates for use as adaptive, “chameleon” nanocomposites for tribological applications subjected to thermal cycling up to high (700 °C) temperatures. The composition, structure and mechanical properties of the films were characterized with X-ray photoelectron spectroscopy, electron dispersive spectroscopy scanning electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction and nanoindentation. Increasing the metal content of the films by increasing the magnetron power resulted in decreased zirconia grain sizes for films with silver and/or molybdenum additions. The reduced zirconia grain size was attributed to a decrease in the ion-to-atom ratio during deposition. Unlike the YSZ–Ag films that exhibited reduced hardness with increasing metal content, YSZ–Mo film hardness increased from 12 to 17.5 GPa at 15 and 24 at.% molybdenum, respectively. Adding molybdenum to the films resulted in cracks and holes in the film surface indicative of molybdenum oxidation during processing. Adding both silver and molybdenum eliminated the undesirable surface features found in the YSZ–Mo films. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLYBDENUM KW - MATTER -- Properties KW - COATING processes KW - MOLECULAR spectroscopy KW - Hardness KW - Magnetron sputtering KW - Nanocomposites KW - Pulsed laser deposition N1 - Accession Number: 19332148; Muratore, C. 1; Email Address: chris.muratore@wpafb.af.mil Voevodin, A.A. 2 Hu, J.J. 3 Jones, J.G. 2 Zabinski, J.S. 2; Affiliation: 1: UTC Inc., Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, OH 45433, United States 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, OH 45433, United States 3: UES Inc., Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, OH 45433, United States; Source Info: Nov2005, Vol. 200 Issue 5/6, p1549; Subject Term: MOLYBDENUM; Subject Term: MATTER -- Properties; Subject Term: COATING processes; Subject Term: MOLECULAR spectroscopy; Author-Supplied Keyword: Hardness; Author-Supplied Keyword: Magnetron sputtering; Author-Supplied Keyword: Nanocomposites; Author-Supplied Keyword: Pulsed laser deposition; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.surfcoat.2005.08.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19332148&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Subramanyam, Guru AU - Ahamed, Faruque AU - Biggers, Rand AU - Neidhard, Robert AU - Nykiel, Edward AU - Ebel, John AU - Strawser, Richard AU - Stamper, Keith AU - Calcatera, Mark T1 - RF performance evaluation of ferroelectric varactor shunt switches. JO - Microwave & Optical Technology Letters JF - Microwave & Optical Technology Letters Y1 - 2005/11/20/ VL - 47 IS - 4 M3 - Article SP - 370 EP - 374 SN - 08952477 AB - This paper addresses experimental RF performance evaluation, and electrical-parameter extraction of different-size ferroelectric varactor shunt switches. Ferroelectric varactor shunt-switch operation is based on the nonlinear dielectric tunability of a Ba0.6Sr0.4TiO3 (BST) thin film sandwiched between two metal layers in a parallel-plate configuration. Coplanar-waveguide implementation of the varactor shunt switch results in a high-speed RF switch, through a simple two-metal layer Si MMIC compatible process on high-resistivity Si substrates. The experimental RF performance of the switches shows low insertion loss for smaller-area devices, with good isolation for larger-area devices. To optimize the device design, the rf performances of multiple devices are tested, and the electrical parameters are extracted. The capacitance of the varactor shunt switches tested are tunable by more than 4:1 for bias voltages below 12 V. The switching speed of the devices tested is approximately 43 ns, based on the step-response measurements. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 370–374, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21172 [ABSTRACT FROM AUTHOR] AB - Copyright of Microwave & Optical Technology Letters is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VARACTORS KW - FERROELECTRIC crystals KW - SWITCHING circuits KW - RADIO frequency KW - STRIP transmission lines KW - MICROSTRIP antennas KW - capacitive shunt switch KW - coplanar waveguide transmission lines KW - ferroelectric varactor KW - microwave/millimeterwave switches N1 - Accession Number: 18442629; Subramanyam, Guru 1 Ahamed, Faruque 1 Biggers, Rand 2 Neidhard, Robert 3 Nykiel, Edward 3 Ebel, John 3 Strawser, Richard 3 Stamper, Keith 3 Calcatera, Mark 3; Affiliation: 1: University of Dayton, 300 College Park, Dayton, OH 45469 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, Dayton, OH 45433 3: Air Force Research Laboratory, Sensors Directorate, WPAFB, Dayton, OH 45433; Source Info: 11/20/2005, Vol. 47 Issue 4, p370; Subject Term: VARACTORS; Subject Term: FERROELECTRIC crystals; Subject Term: SWITCHING circuits; Subject Term: RADIO frequency; Subject Term: STRIP transmission lines; Subject Term: MICROSTRIP antennas; Author-Supplied Keyword: capacitive shunt switch; Author-Supplied Keyword: coplanar waveguide transmission lines; Author-Supplied Keyword: ferroelectric varactor; Author-Supplied Keyword: microwave/millimeterwave switches; NAICS/Industry Codes: 335313 Switchgear and Switchboard Apparatus Manufacturing; Number of Pages: 5p; Illustrations: 4 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1002/mop.21172 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18442629&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smart, D.F. AU - Shea, M.A. T1 - A review of geomagnetic cutoff rigidities for earth-orbiting spacecraft JO - Advances in Space Research JF - Advances in Space Research Y1 - 2005/11/15/ VL - 36 IS - 10 M3 - Article SP - 2012 EP - 2020 SN - 02731177 AB - Abstract: Geomagnetic cutoff rigidities are a quantitative measure of the shielding provided by the earth’s magnetic field. More precisely, geomagnetic cutoff rigidities predict the energetic charged particle transmission through the magnetosphere to a specific location as a function of direction. The generally accepted manner for determining cutoff rigidities is by the method of tracing particle trajectories in model magnetospheres. However, the trajectory-tracing process is so computer intensive that in the interest of economy, many approximations are still utilized. The use of modifications of the Störmer equation (with an appropriate magnetic coordinate system) is sufficient for many applications. However, for precise experimental measurements, cutoff rigidities determined by the trajectory-tracing method must be utilized. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC fields KW - MAGNETOSPHERE KW - MAGNETICS KW - SPACE vehicles KW - Earth-orbiting spacecraft KW - Geomagnetic cutoff rigidition KW - Magnetic field KW - Trajectory tracing N1 - Accession Number: 19108337; Smart, D.F.; Email Address: sssrc@msn.com Shea, M.A. 1; Affiliation: 1: Air Force Research Laboratory VSBX, Space Vehicles Directorate, 29 Randolph Road, Bedford, MA 01731, USA; Source Info: Nov2005, Vol. 36 Issue 10, p2012; Subject Term: MAGNETIC fields; Subject Term: MAGNETOSPHERE; Subject Term: MAGNETICS; Subject Term: SPACE vehicles; Author-Supplied Keyword: Earth-orbiting spacecraft; Author-Supplied Keyword: Geomagnetic cutoff rigidition; Author-Supplied Keyword: Magnetic field; Author-Supplied Keyword: Trajectory tracing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.asr.2004.09.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19108337&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Luo, H. AU - Shaw, L. AU - Zhang, L.C. AU - Miracle, D. T1 - On tension/compression asymmetry of an extruded nanocrystalline Al–Fe–Cr–Ti alloy JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2005/11/15/ VL - 409 IS - 1/2 M3 - Article SP - 249 EP - 256 SN - 09215093 AB - Abstract: A multi-phase nanocrystalline Al93Fe3Cr2Ti2 alloy containing 30vol.% intermetallic particles was prepared via mechanical alloying, followed by hot extrusion. Tensile and compressive tests at ambient and elevated temperatures were performed on this nanocrystalline alloy. The alloy exhibited significant difference in deformation behavior between tension and compression at 25, 200 and 300°C. However, the strengths obtained in tension and compression were similar at 400°C. Systematic microstructure examinations and deformation mechanism analyses indicate that the asymmetry of this nc Al93Fe3Cr2Ti2 alloy is related to its dislocation mediated plastic deformation mechanism, its nanoscale grain microstructure, and premature brittle failure in tension tests. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOCRYSTALS KW - SURFACE tension KW - ALUMINUM alloys KW - MICROMECHANICS KW - HIGH temperatures KW - Aluminum alloy KW - Asymmetry KW - Compression KW - Nanocrystalline materials KW - Tension N1 - Accession Number: 19042976; Luo, H. 1 Shaw, L. 1; Email Address: msedept@engr.uconn.edu Zhang, L.C. 1 Miracle, D. 2; Affiliation: 1: Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269 3136, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH, USA; Source Info: Nov2005, Vol. 409 Issue 1/2, p249; Subject Term: NANOCRYSTALS; Subject Term: SURFACE tension; Subject Term: ALUMINUM alloys; Subject Term: MICROMECHANICS; Subject Term: HIGH temperatures; Author-Supplied Keyword: Aluminum alloy; Author-Supplied Keyword: Asymmetry; Author-Supplied Keyword: Compression; Author-Supplied Keyword: Nanocrystalline materials; Author-Supplied Keyword: Tension; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.msea.2005.06.075 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19042976&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Byers, Benjamin D. AU - Gordon, Michael C. AU - Higby, Kenneth T1 - Severe Hemolytic Disease of the Newborn Due to Anti-Cw. JO - Obstetrics & Gynecology JF - Obstetrics & Gynecology Y1 - 2005/11/15/ VL - 106 IS - 5 part 2 M3 - Article SP - 1180 EP - 1182 SN - 00297844 AB - Pregnancies complicated by Rh isoimmunization have decreased significantly since the widespread use of Rh immune globulin. Uncommon red blood cell antigens have therefore become more clinically evident. We report a case of anti-Cw immunization that resulted in severe fetal anemia that required multiple transfusions.A 28-year-old multigravida presented to our service at 18 weeks of gestation with her fourth pregnancy. Her pregnancy was complicated by anti-Cw isoimmunization that resulted in severe fetal anemia requiring in utero fetal blood transfusions.While previous reports recommend only postpartum surveillance when Cw isoimmunization is present, we report a case resulting in severe fetal anemia. [ABSTRACT FROM AUTHOR] AB - Copyright of Obstetrics & Gynecology is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 114910547; Byers, Benjamin D. 1 Gordon, Michael C. 1 Higby, Kenneth 1; Affiliation: 1: From the 1 San Antonio Uniformed Services Health Education Consortium, Brooke Army Medical Center and Wilford Hall United States Air Force Medical Center, San Antonio, Texas.; Source Info: Nov2005, Vol. 106 Issue 5 part 2, p1180; Number of Pages: 3p; Document Type: Article; Full Text Word Count: 1972 L3 - 10.1097/01.AOG.0000164060.89842.a9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=114910547&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sun, Greg AU - Khurgin, Jacob B. AU - Soref, Richard A. T1 - Nonlinear all-optical GaN/AlGaN multi-quantum-well devices for 100 Gb/s applications at λ=1.55 μm. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/11/14/ VL - 87 IS - 20 M3 - Article SP - 201108 PB - American Institute of Physics SN - 00036951 AB - Using quantum-mechanical analysis, a strain-balanced stack of coupled GaN/AlGaN quantum wells has been engineered for bandwidth-optimized all-optical switching at low switching powers. Intersubband transitions between three conduction subbands provide the basis for the large, fast, nonlinear optical response. Optimized performance for a given symbol rate is obtained by engineering the response time and nonlinear phase shift. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM wells KW - SCATTERING (Physics) KW - POTENTIAL theory (Physics) KW - ENERGY levels (Quantum mechanics) KW - RADIATIVE transitions KW - PHYSICS N1 - Accession Number: 19005746; Sun, Greg 1; Email Address: greg.sun@umb.edu Khurgin, Jacob B. 2 Soref, Richard A. 3; Affiliation: 1: Department of Physics, University of Massachusetts, Boston, Massachusetts 02125 2: Department of Electrical and Computer Engineering, The Johns Hopkins University, Baltimore, Maryland 21218 3: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731; Source Info: 11/14/2005, Vol. 87 Issue 20, p201108; Subject Term: QUANTUM wells; Subject Term: SCATTERING (Physics); Subject Term: POTENTIAL theory (Physics); Subject Term: ENERGY levels (Quantum mechanics); Subject Term: RADIATIVE transitions; Subject Term: PHYSICS; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.2132084 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19005746&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fossum, Eric AU - Tan, Loon-Seng T1 - Geometrical influence of AB n monomer structure on the thermal properties of linear-hyperbranched ether–ketone copolymers prepared via an AB+AB n route JO - Polymer JF - Polymer Y1 - 2005/11/14/ VL - 46 IS - 23 M3 - Article SP - 9686 EP - 9693 SN - 00323861 AB - Abstract: A series of poly(ether ketone) copolymers were prepared by nucleophilic aromatic polymerization reactions of 4-fluoro-4′-hydroxybenzophenone, 2, in the presence of varying percentages of AB n monomers based on a triarylphosphine oxide platform, 1a (2F), 1b (4F), and 1c (6F), where A=OH and B=F. As expected, the crystallinity of the samples decreased with an increasing AB n content. However, the tetrahedral geometry of the phosphine oxide-based AB n monomers proved to be much more efficient at lowering the melt temperature of the copolymers than was the corresponding ketone-based AB n monomer, 3,5-bis(4-fluorophenylbenzoyl)phenol, 4, that possesses a structure more similar to that of 2. Polymerization of 2 in the presence of as little as 5mol% of bis-(3,4,5-trifluorophenyl)-(4-hydroxyphenyl)phosphine oxide, 1c (6F), afforded a completely amorphous polymer with a glass transition temperature of 168°C that was soluble in hot NMP and DMSO. The copolymers also exhibited excellent thermoxidative stability with a number of samples displaying 5% weight loss temperatures, in air, well in excess of 500°C. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYETHERS KW - KETONES KW - POLYMERIZATION KW - MONOMERS KW - PHOSPHINE KW - Copolymerization KW - Poly(ether–ketone) KW - Thermal properties N1 - Accession Number: 18781499; Fossum, Eric 1; Email Address: eric.fossum@wright.edu Tan, Loon-Seng 2; Email Address: loon-seng.tan@wpafb.af.mil; Affiliation: 1: Department of Chemistry, Wright State University, 3640 Colonel Glenn Hwy, Dayton, OH 45435, USA 2: Polymer Branch, Materials and Manufacturing Directorate, AFRL/MLBP, Air Force Research Laboratory, Manufacturing Technology Directorate, 2491 Hobson Way, Wright-Patterson Air Force Base, Dayton, OH 45433-7750, USA; Source Info: Nov2005, Vol. 46 Issue 23, p9686; Subject Term: POLYETHERS; Subject Term: KETONES; Subject Term: POLYMERIZATION; Subject Term: MONOMERS; Subject Term: PHOSPHINE; Author-Supplied Keyword: Copolymerization; Author-Supplied Keyword: Poly(ether–ketone); Author-Supplied Keyword: Thermal properties; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.polymer.2005.08.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18781499&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - U'ren, Alfred B. AU - Erdmann, Reinhard AU - Walmsley, Ian A. T1 - Synthesis of time-bin entangled states via tailored group velocity matching. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2005/11/10/ VL - 52 IS - 16 M3 - Article SP - 2197 EP - 2205 SN - 09500340 AB - We show that tailored group velocity matching in non-linear χ (2) crystal sequences interspersed with birefringent χ (1) compensators can be used to generate time-bin entangled states. By choosing the crystal and compensator materials appropriately it is possible to generate all four time-bin Bell states without resorting to time non-stationary devices. This scheme, in addition, lends itself well to the generation of higher-dimensionality states such as time-bin qutrits. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPEED KW - NONLINEAR theories KW - SPATIO-temporal variation KW - CRYSTAL optics KW - PHOTONS KW - RESEARCH N1 - Accession Number: 18807180; U'ren, Alfred B. 1,2; Email Address: auren@cicese.mx Erdmann, Reinhard 3 Walmsley, Ian A. 2; Affiliation: 1: Centro de Investigació n Científica y Educaciín Superior de Ensenada (CICESE), Baja California, 22860, Mexico 2: Clarendon Laboratory, Oxford University, Parks Road, Oxford, OX1 3PU, England 3: Sensors Directorate, Air Force Research Laboratory, Baja California, Rome, NY; Source Info: 11/10/2005, Vol. 52 Issue 16, p2197; Subject Term: SPEED; Subject Term: NONLINEAR theories; Subject Term: SPATIO-temporal variation; Subject Term: CRYSTAL optics; Subject Term: PHOTONS; Subject Term: RESEARCH; Number of Pages: 9p; Illustrations: 4 Color Photographs, 3 Diagrams; Document Type: Article L3 - 10.1080/09500340500275843 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18807180&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Geis, M. W. AU - Deneault, S. AU - Krohn, K. E. AU - Marchant, M. AU - Lyszczarz, T. M. AU - Cooke, D. L. T1 - Field emission at 10 V cm-1 with surface emission cathodes on negative-electron-affinity insulators. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/11/07/ VL - 87 IS - 19 M3 - Article SP - 192115 PB - American Institute of Physics SN - 00036951 AB - Surface emission cathodes reported here consist of two electrodes separated by ∼10 μm on a negative-electron-affinity glass, Cs2Si4O9. The electrodes consist of a W film suspended over the insulator by a gap of 0–70 nm. When electron emission is initiated with a bias of 0–300 V, between the electrodes, the cathodes continue to emit after the bias is removed and for anode voltages as low as 20 V, electric fields <10 Vcm-1. The emission is modeled by the electrons tunneling from the electrode onto the glass surface and from there they are emitted into vacuum. Emission without bias is the result of positive charge in the insulator, which replaces the need for a bias voltage. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CATHODES KW - FIELD emission KW - ELECTRODES KW - ELECTRIC fields KW - ANODES KW - ELECTRIC potential N1 - Accession Number: 19105994; Geis, M. W. 1; Email Address: geis@ll.mit.edu Deneault, S. 1 Krohn, K. E. 1 Marchant, M. 1 Lyszczarz, T. M. 1 Cooke, D. L. 2; Affiliation: 1: Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, Massachusetts 02420-9108 2: U.S. Air Force Research Laboratory, AFRL/VSBX, Hanscom AFB, Massachusetts 01731-3010; Source Info: 11/7/2005, Vol. 87 Issue 19, p192115; Subject Term: CATHODES; Subject Term: FIELD emission; Subject Term: ELECTRODES; Subject Term: ELECTRIC fields; Subject Term: ANODES; Subject Term: ELECTRIC potential; Number of Pages: 3p; Illustrations: 3 Diagrams, 1 Graph; Document Type: Article L3 - 10.1063/1.2130382 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19105994&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Getley, I.L. AU - Duldig, M.L. AU - Smart, D.F. AU - Shea, M.A. T1 - The applicability of model based aircraft radiation dose estimates JO - Advances in Space Research JF - Advances in Space Research Y1 - 2005/11/05/ VL - 36 IS - 9 M3 - Article SP - 1638 EP - 1644 SN - 02731177 AB - Abstract: The monthly cosmic radiation modulation parameters provided to compute radiation dose on aircraft flights do not account for short-term temporal variations such as Forbush decreases or high-speed solar wind flows. The currently available radiation dose models also do not account for changes in geomagnetic conditions when the geomagnetic cutoff may be significantly lower than the average predicted by use of the international geomagnetic reference field models. We utilize on-board aircraft radiation dosimeter data acquired during the major solar-terrestrial disturbances of October/November 2003 to demonstrate these effects along with the increased dose due to the ground-level event of 29 October 2003 on a mid-latitude flight path. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COSMIC rays KW - ASTROPHYSICAL radiation KW - IONIZING radiation KW - SPACE environment KW - Aircraft radiation KW - Aircraft radiation models KW - Cosmic rays KW - Dose estimates KW - Forbush decrease N1 - Accession Number: 19108271; Getley, I.L. 1 Duldig, M.L. 2 Smart, D.F. 3; Email Address: sssrc@msn.com Shea, M.A. 3; Affiliation: 1: Department of Aviation, University of New South Wales, Sydney 2052, Australia 2: Space and Atmospheric Sciences, Australian Antarctic Division, Kingston 7050, Australia 3: Air Force Research Laboratory (VSBX), 29 Randolph Road, Hanscom AFB, Bedford, MA 01730, USA; Source Info: Nov2005, Vol. 36 Issue 9, p1638; Subject Term: COSMIC rays; Subject Term: ASTROPHYSICAL radiation; Subject Term: IONIZING radiation; Subject Term: SPACE environment; Author-Supplied Keyword: Aircraft radiation; Author-Supplied Keyword: Aircraft radiation models; Author-Supplied Keyword: Cosmic rays; Author-Supplied Keyword: Dose estimates; Author-Supplied Keyword: Forbush decrease; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.asr.2005.09.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19108271&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Byers, Benjamin D. AU - Gordon, Michael C. AU - Higby, Kenneth T1 - Severe Hemolytic Disease of the Newborn Due to Anti-Cw. JO - Obstetrics & Gynecology JF - Obstetrics & Gynecology Y1 - 2005/11/02/ VL - 106 IS - 5 part 2 M3 - Article SP - 1180 EP - 1182 SN - 00297844 AB - BACKGROUND: Pregnancies complicated by Rh isoimmunization have decreased significantly since the widespread use of Rh immune globulin. Uncommon red blood cell antigens have therefore become more clinically evident. We report a case of anti-Cw immunization that resulted in severe fetal anemia that required multiple transfusions. CASE: A 28-year-old multigravida presented to our service at 18 weeks of gestation with her fourth pregnancy. Her pregnancy was complicated by anti-Cw isoimmunization that resulted in severe fetal anemia requiring in utero fetal blood transfusions. CONCLUSION: While previous reports recommend only postpartum surveillance when Cw isoimmunization is present, we report a case resulting in severe fetal anemia. [ABSTRACT FROM AUTHOR] AB - Copyright of Obstetrics & Gynecology is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PREGNANCY complications KW - ERYTHROBLASTOSIS fetalis KW - NEWBORN infants -- Diseases KW - GLOBULINS KW - ANTIGENS KW - ANEMIA KW - BLOOD transfusion N1 - Accession Number: 18848216; Byers, Benjamin D. 1; Email Address: Benjamin.byers@sbcglobal.net Gordon, Michael C. 1 Higby, Kenneth 1; Affiliation: 1: San Antonio Uniformed Services Health Education Consortium, Brooke Army Medical Center and Wilford Hall United States Air Force Medical Center, San Antonio, Texas; Source Info: Nov2005, Vol. 106 Issue 5 part 2, p1180; Subject Term: PREGNANCY complications; Subject Term: ERYTHROBLASTOSIS fetalis; Subject Term: NEWBORN infants -- Diseases; Subject Term: GLOBULINS; Subject Term: ANTIGENS; Subject Term: ANEMIA; Subject Term: BLOOD transfusion; NAICS/Industry Codes: 325410 Pharmaceutical and medicine manufacturing; NAICS/Industry Codes: 325414 Biological Product (except Diagnostic) Manufacturing; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18848216&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gano, Shawn E. AU - Renaud, John E. AU - Sanders, Brian T1 - Hybrid Variable Fidelity Optimization by Using a Kriging-Based Scaling Function. JO - AIAA Journal JF - AIAA Journal Y1 - 2005/11// VL - 43 IS - 11 M3 - Article SP - 2422 EP - 2430 SN - 00011452 AB - Solving design problems that rely on very complex and computationally expensive calculations using standard optimization methods might not be feasible given design cycle time constraints. Variable fidelity methods address this issue by using lower-fidelity models and a scaling function to approximate the higher-fidelity models in a provably convergent framework. In the past, scaling functions have mainly been either first-order multiplicative or additive corrections. These are being extended to second order. In this investigation variable metric approaches for calculating second-order scaling information are developed. A kriging-based scaling function is introduced to better approximate the high-fidelity response on a more global level. An adaptive hybrid method is also developed in this investigation. The adaptive hybrid method combines the additive and multiplicative approaches so that the designer does not have to determine which is more suitable prior to optimization. The methodologies developed in this research are compared to existing methods using two demonstration problems. The first problem is analytic, whereas the second involves the design of a supercritical high-lift airfoil. The results demonstrate that the kriging- based scaling methods improve computational expense by lowering the number of high-fidelity function calls required for convergence. The results also indicate the hybrid method is both robust and effective. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATHEMATICAL optimization KW - MATHEMATICAL models KW - AEROFOILS KW - SYSTEMS design KW - STOCHASTIC convergence N1 - Accession Number: 18972185; Gano, Shawn E. 1,2; Email Address: sgano@nd.edu Renaud, John E. 3,4; Email Address: John.E.Renaud.2@nd.edu Sanders, Brian 4,5; Email Address: Brian.Sanders@wpafb.af.mil; Affiliation: 1: Ph.D. Candidate, Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556-5637 2: Student Member AIAA 3: Professor, Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556-5637 4: Associate Fellow AIAA 5: Program Manager, Advanced Structural Concepts Branch (AFRL/VASA), U.S. Air Force Research. Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7531; Source Info: Nov2005, Vol. 43 Issue 11, p2422; Subject Term: MATHEMATICAL optimization; Subject Term: MATHEMATICAL models; Subject Term: AEROFOILS; Subject Term: SYSTEMS design; Subject Term: STOCHASTIC convergence; Number of Pages: 9p; Illustrations: 3 Diagrams, 2 Charts, 5 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18972185&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Hagstad, David T1 - To Give Blood or Not to Give. JO - American Journal of Nursing JF - American Journal of Nursing Y1 - 2005/11// VL - 105 IS - 11 M3 - Letter SP - 31 EP - 31 SN - 0002936X AB - This article presents information on the author's views on whether the decision to donate blood should be based on a patient's nationality or their ability to care for their own countrymen in reference to an incident that took place in Iraq with a prisoner of war. The author had volunteered to come to Iraq and give whatever he could--shy of his own life or limb--to help those in need. He didn't quantify that decision by stipulating which people he thought deserved more help. The author assumed that his colleagues had the worst of intentions rather than rational goals in a difficult situation. KW - DONATION of organs, tissues, etc. KW - BLOOD KW - VOLUNTEER service KW - CARING KW - ATTITUDE (Psychology) KW - IRAQ N1 - Accession Number: 18907112; Hagstad, David 1; Email Address: david•in•balad@yahoo.com; Affiliation: 1: Master Sergeant, Louisiana Air National Guard, United States Air Force.; Source Info: Nov2005, Vol. 105 Issue 11, p31; Subject Term: DONATION of organs, tissues, etc.; Subject Term: BLOOD; Subject Term: VOLUNTEER service; Subject Term: CARING; Subject Term: ATTITUDE (Psychology); Subject Term: IRAQ; Number of Pages: 1p; Document Type: Letter UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18907112&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grutter, Paul W. AU - Petersen, Steve A. T1 - Anatomical Acromioclavicular Ligament Reconstruction: A Biomechanical Comparison of Reconstructive Techniques of the Acromioclavicular Joint. JO - American Journal of Sports Medicine JF - American Journal of Sports Medicine Y1 - 2005/11// VL - 33 IS - 11 M3 - Article SP - 1723 EP - 1728 SN - 03635465 AB - Background: Current surgical treatments for acromioclavicular separations do not re-create the anatomy of the acromioclavicular joint. Hypothesis: Anatomical acromioclavicular reconstruction re-creates the strength of the native acromioclavicular joint and is stronger than a modified Weaver-Dunn repair. Study Design: Controlled laboratory study. Methods: The native acromioclavicular joint in 6 fresh-frozen cadaveric upper extremities was stressed to failure under uniaxial tension in the coronal plane. A modified Weaver-Dunn procedure, anatomical acromioclavicular reconstruction using a palmaris longus graft, and anatomical acromioclavicular reconstruction using a flexor carpi radialis graft were then performed sequentially. Each repair was stressed to failure. Load-displacement curves and mechanism of failure were recorded for each. Results: Loads at failure for the native acromioclavicular joint complex, modified Weaver-Dunn procedure, anatomical acromioclavicular reconstruction using a palmaris longus tendon graft, and anatomical acromioclavicular reconstruction using a flexor carpi radialis tendon graft were 815 N, 483 N, 326 N, and 774 N, respectively. The strength of the native acromioclavicular joint complex was significantly different from the modified Weaver-Dunn repair (P < .001) and the anatomical acromioclavicular reconstruction using a palmaris longus tendon graft (P < .001) but not from the anatomical acromioclavicular reconstruction using a flexor carpi radialis tendon graft (P = .607). Conclusion: The strength of the described anatomical acromioclavicular reconstruction is limited by the tendon graft used. Anatomical acromioclavicular reconstruction with a flexor carpi radialis tendon graft re-creates the tensile strength of the native acromioclavicular joint complex and is superior to a modified Weaver-Dunn repair. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Sports Medicine is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TENDONS -- Surgery KW - TENDONS -- Wounds & injuries KW - JOINTS (Anatomy) -- Diseases KW - PHYSIOLOGY KW - RESEARCH KW - ANATOMY KW - acromioclavicular joint KW - biomechanics KW - ligaments KW - reconstruction KW - shoulder N1 - Accession Number: 18845987; Grutter, Paul W. 1; Email Address: grutter@excite.com Petersen, Steve A. 2; Affiliation: 1: Department of Orthopaedic Surgery, 1st Medical Group, United States Air Force, Langley Air Force Base, Virginia. 2: Department of Orthopaedic Surgery, Wayne State University, Detroit, Michigan.; Source Info: Nov2005, Vol. 33 Issue 11, p1723; Subject Term: TENDONS -- Surgery; Subject Term: TENDONS -- Wounds & injuries; Subject Term: JOINTS (Anatomy) -- Diseases; Subject Term: PHYSIOLOGY; Subject Term: RESEARCH; Subject Term: ANATOMY; Author-Supplied Keyword: acromioclavicular joint; Author-Supplied Keyword: biomechanics; Author-Supplied Keyword: ligaments; Author-Supplied Keyword: reconstruction; Author-Supplied Keyword: shoulder; Number of Pages: 6p; Document Type: Article L3 - 10.1177/0363546505275646 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18845987&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patnaik, Amalendu AU - Anagnostou, Dimitrios AU - Christodoulou, Christos G. AU - Lyke, James C. T1 - Neurocomputational Analysis of a Multiband Reconfigurable Planar Antenna. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2005/11// VL - 53 IS - 11 M3 - Article SP - 3453 EP - 3458 SN - 0018926X AB - Procedures using neural networks are developed for characterizing multiband reconfigurable antennas. A multilayer perceptron (MLP) is used to locate the operational frequency bands of the antenna at different reconfigured conditions. Another self-organizing map (SOM) neural network accomplishes the task of locating the switches to be turned ON for a desired frequency response. The developed formulation is tested on a laboratory prototype antenna. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNAS (Electronics) KW - NEURAL networks (Computer science) KW - ELECTRONIC apparatus & appliances KW - FREQUENCIES of oscillating systems KW - SELF-organizing maps KW - PROTOTYPES KW - Multilayer perceptron (MLP) KW - neural networks KW - reconfigurable antenna KW - self-organizing map (SOM). N1 - Accession Number: 19077748; Patnaik, Amalendu 1; Email Address: apatnaik@ieee.org Anagnostou, Dimitrios 2; Email Address: danagn@ece.unm.edu Christodoulou, Christos G. 2; Email Address: christos@ece.unm.edu Lyke, James C. 3; Affiliation: 1: Department of Electronics and Communication Engineering, National Institute of Science and Technology, Berhampur-761008, India. 2: Department of Electrical and Computer Engineering, The University of New Mexico, Albuquerque, NM 87131, USA. 3: Air Force Research Laboratory/VSSE, Kirtland AFB, Albuquerque, NM 87117 USA.; Source Info: Nov2005, Vol. 53 Issue 11, p3453; Subject Term: ANTENNAS (Electronics); Subject Term: NEURAL networks (Computer science); Subject Term: ELECTRONIC apparatus & appliances; Subject Term: FREQUENCIES of oscillating systems; Subject Term: SELF-organizing maps; Subject Term: PROTOTYPES; Author-Supplied Keyword: Multilayer perceptron (MLP); Author-Supplied Keyword: neural networks; Author-Supplied Keyword: reconfigurable antenna; Author-Supplied Keyword: self-organizing map (SOM).; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TAP.2005.858617 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19077748&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - York, Raymond G. AU - Lewis, Elise AU - Brown, W. Ray AU - Girard, Michael F. AU - Mattie, David R. AU - Funk, Kathleen A. AU - Strawson, Joan S. T1 - Refining the Effects Observed in a Developmental Neurobehavioral Study of Ammonium Perchlorate Administered Orally in Drinking Water to Rats. I. Thyroid and Reproductive Effects. JO - International Journal of Toxicology (Taylor & Francis) JF - International Journal of Toxicology (Taylor & Francis) Y1 - 2005/11//Nov/Dec2005 VL - 24 IS - 6 M3 - Article SP - 403 EP - 418 PB - Taylor & Francis Ltd SN - 10915818 AB - A recent study further investigated the potential effects of maternal thyroid function and morphology on fetal development upon maternal exposure to ammonium perchlorate during gestation and lactation. Female Sprague-Dawley rats (25/group) were given continual access to 0 (carrier), 0.01, 0.1, 1.0, and 30.0 mg/kg-day perchlorate in drinking water beginning 2 weeks prior to cohabitation through lactation day 10. Maternal, fetal, and pup serum thyroid hormone (thyroid-stimulating hormone [TSH], triiodo thyronine [T 3 ], thyroxine [T 4 ]) levels and thyroid histopathology were evaluated on gestation day 21, and lactation days 5, 10, and 22. No effects of exposure were observed on cesarean-sectioning, litter parameters, or fetal alterations. Reproductive parameters, including gestation length, number of implants, litter size, pup viability, and lactation indices, were comparable among all groups. Thyroid weights of dams sacrificed on gestation day 21, and lactation days 10 and 22 were significantly increased at 30.0 mg/kg-day. Increased thyroid weights were observed in male and female pups as early as postpartum days 5 and 10, respectively. Changes in maternal and neonatal thyroid histopathology were detectable at 1.0 mg/kg-day exposure. The maternal no-observable-effect level (NOEL) was 0.1 mg/kg-day (follicular cell hyperplasia was present at 1.0 and 30.0 mg/kg-day). The developmental NOEL was less than 0.01 mg/kg-day; thyroid weights of postpartum day 10 pups were increased at all exposures. Colloid depletion at 1.0 and 30.0 mg/kg-day exposures and changes of hormone levels at all exposures were considered an adaptive effect and appeared reversible in the rodent. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Toxicology (Taylor & Francis) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AMMONIUM perchlorate KW - PERCHLORATES KW - PREGNANCY KW - LACTATION KW - THYRONINES KW - PATHOLOGICAL histology KW - THYROXINE KW - CHEMICALS KW - RATS as laboratory animals KW - Perchlorate KW - Rat KW - Reproduction KW - Thyroid Histopathology KW - Thyroid Hormones N1 - Accession Number: 19328626; York, Raymond G. 1; Email Address: raymond.york@us.crl.com Lewis, Elise 1 Brown, W. Ray 2 Girard, Michael F. 3 Mattie, David R. 4 Funk, Kathleen A. 5 Strawson, Joan S. 6; Affiliation: 1: Charles River Laboratories, Preclinical Services, Horsham, Pennsylvania, USA 2: Research Pathology Services, Inc., New Britain, Pennsylvania, USA 3: Perchlorate Study Group, Sacramento, California, USA 4: Air Force Research Laboratory, WPAFB, Ohio, USA 5: Experimental Pathology Laboratories, Sterling, Virginia, USA 6: Toxicology Excellence for Risk Assessment, Cincinnati, Ohio, USA; Source Info: Nov/Dec2005, Vol. 24 Issue 6, p403; Subject Term: AMMONIUM perchlorate; Subject Term: PERCHLORATES; Subject Term: PREGNANCY; Subject Term: LACTATION; Subject Term: THYRONINES; Subject Term: PATHOLOGICAL histology; Subject Term: THYROXINE; Subject Term: CHEMICALS; Subject Term: RATS as laboratory animals; Author-Supplied Keyword: Perchlorate; Author-Supplied Keyword: Rat; Author-Supplied Keyword: Reproduction; Author-Supplied Keyword: Thyroid Histopathology; Author-Supplied Keyword: Thyroid Hormones; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 16p; Illustrations: 11 Charts, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19328626&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - York, Raymond G. AU - Barnett, Jr., John AU - Girard, Michael F. AU - Mattie, David R. AU - Bekkedal, Marni V. K. AU - Garman, Robert H. AU - Strawson, Joan S. T1 - Refining the Effects Observed in a Developmental Neurobehavioral Study of Ammonium Perchlorate Administered Orally in Drinking Water to Rats. II. Behavioral and Neurodevelopment Effects. JO - International Journal of Toxicology (Taylor & Francis) JF - International Journal of Toxicology (Taylor & Francis) Y1 - 2005/11//Nov/Dec2005 VL - 24 IS - 6 M3 - Article SP - 451 EP - 467 PB - Taylor & Francis Ltd SN - 10915818 AB - A developmental neurotoxicity study was conducted to generate additional data on the potential functional and morphological hazard to the central nervous system caused by ammonium perchlorate in offspring from in utero and lactation exposure. Female Sprague-Dawley rats (23 to 25/group) were given continuous access to 0 (carrier), 0.1, 1.0, 3.0, and 10.0 mg/kg-day perchlorate in the drinking water beginning 2 weeks prior to mating and continuing through day 10 of lactation for the behavioral function assessment or given continuous access to 0 (carrier), 0.1, 1.0, 3.0, and 30.0 mg/kg-day beginning on gestation day 0 and continuing through day 10 of lactation for neurodevelopment assessments. Motor activity was conducted on postpartum days 14, 18, and 22 and juvenile brain weights, neurohistopathological examinations, and regional brain morphometry were conducted on postpartum days 10 and 22. This research revealed a sexually dimorphic response, with some brain regions being larger in perchlorate-treated male rats than in comparable controls. Even so, there was no evidence of any obvious exposure-related effects on male rat brain weights or neuropathology. The most consistent exposure-related effect in the male pups was on the thickness of the corpus callosum, with both the right- and left-sided measures of the thickness of this white matter tract being significantly greater for the male pups in the 0.1 and 1.0 mg/kg-day exposure groups. The behavioral testing suggests prenatal exposure to ammonium perchlorate does not affect the development of gross motor movements in the pups. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Toxicology (Taylor & Francis) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEUROTOXICOLOGY KW - CENTRAL nervous system KW - MORPHOLOGY KW - AMMONIUM perchlorate KW - PERCHLORATES KW - LACTATION KW - RATS KW - DRINKING water KW - NERVOUS system -- Diseases KW - Brain Morphometry KW - Developmental Neurotoxicity KW - Perchlorate KW - Rat N1 - Accession Number: 19328629; York, Raymond G. 1; Email Address: raymond.york@us.crl.com Barnett, Jr., John 1 Girard, Michael F. 2 Mattie, David R. 3 Bekkedal, Marni V. K. 4 Garman, Robert H. 5 Strawson, Joan S. 6; Affiliation: 1: Charles River Laboratories, Preclinical Services, Horsham, Pennsylvania, USA 2: Chairman, Perchlorate Study Group, Sacramento, California, USA 3: Air Force Research Laboratory, WPAFB, Dayton, Ohio, USA 4: Bureau of Environmental Health, Madison, Wisconsin, USA 5: Consultants in Veterinary Pathology, Inc., Murrysville, Pennsylvania, USA 6: Toxicology Excellence for Risk Assessment, Cincinnati, Ohio, USA; Source Info: Nov/Dec2005, Vol. 24 Issue 6, p451; Subject Term: NEUROTOXICOLOGY; Subject Term: CENTRAL nervous system; Subject Term: MORPHOLOGY; Subject Term: AMMONIUM perchlorate; Subject Term: PERCHLORATES; Subject Term: LACTATION; Subject Term: RATS; Subject Term: DRINKING water; Subject Term: NERVOUS system -- Diseases; Author-Supplied Keyword: Brain Morphometry; Author-Supplied Keyword: Developmental Neurotoxicity; Author-Supplied Keyword: Perchlorate; Author-Supplied Keyword: Rat; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 112990 All Other Animal Production; Number of Pages: 17p; Illustrations: 7 Diagrams, 4 Charts, 4 Graphs; Document Type: Article L3 - 10.1080/10915810500367094 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19328629&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chandola, A. AU - Kim, H. J. AU - Dutta, P. S. AU - Guha, S. AU - Gonzalez, L. AU - Kumar, V. T1 - Below band-gap optical absorption in GaxIn1-xSb alloys. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2005/11//11/1/2005 VL - 98 IS - 9 M3 - Article SP - 093103 PB - American Institute of Physics SN - 00218979 AB - The below band-gap optical-absorption characteristics of GaxIn1-xSb alloy system have been reported. The different dependencies of the hole and electron absorption mechanisms on wavelength result in significant changes of the absorption characteristics with alloy composition. In the undoped Ga-rich alloy compositions that are p type in nature (due to residual holes resulting from native defects), the inter-valence-band absorption has been found to be the dominant absorption mechanism. With decreasing Ga (increasing indium) mole fraction, the hole to electron ratio decreases for undoped samples. For such samples, absorption due to electrons becomes significant. With n-type extrinsic doping, intervalley transitions are seen for certain Ga-rich compositions, which also alter the absorption characteristics. The dependencies of various absorption mechanisms as a function of wavelength have been analyzed and discussed in this paper. Based on the theoretical analysis presented in this paper, one can calculate the extrinsic doping level necessary for each alloy composition in order to obtain high optical transparency necessary for infrared optical applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHT absorption KW - OPTICS KW - ALLOYS KW - GALLIUM (Metal) KW - ELECTRONS KW - WAVELENGTHS N1 - Accession Number: 18905036; Chandola, A. 1 Kim, H. J. 1 Dutta, P. S. 1; Email Address: duttap@rpi.edu Guha, S. 2 Gonzalez, L. 2 Kumar, V. 3; Affiliation: 1: Center for Integrated Electronics, Electrical, Computer and Systems Engineering Department, Rensselaer Polytechnic Institute, Troy, New York 12180 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base (AFB), Ohio 45433 3: National Physical Laboratory, New Delhi, India 1100012; Source Info: 11/1/2005, Vol. 98 Issue 9, p093103; Subject Term: LIGHT absorption; Subject Term: OPTICS; Subject Term: ALLOYS; Subject Term: GALLIUM (Metal); Subject Term: ELECTRONS; Subject Term: WAVELENGTHS; Number of Pages: 7p; Illustrations: 4 Charts, 6 Graphs; Document Type: Article L3 - 10.1063/1.2128042 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18905036&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Allakhverdiev, K. R. AU - Baykara, T. AU - Gulubayov, A. Kulibekov AU - Kaya, A. A. AU - Goldstein, J. AU - Fernelius, N. AU - Hanna, S. AU - Salaeva, Z. T1 - Corrected infrared Sellmeier coefficients for gallium selenide. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2005/11//11/1/2005 VL - 98 IS - 9 M3 - Article SP - 093515 PB - American Institute of Physics SN - 00218979 AB - We have measured the room-temperature refractive indices of GaSe throughout the 0.7–1.4 and 2.4–5 μm ranges using the minimum-deviation method of light through a prism with polarization either parallel (extraordinary refractive index ne) or perpendicular to the crystal optical c axis (ordinary refractive index no). The birefringence (Δn) at room temperature has been measured directly using polarized light interference fringes obtained in the transmittance from 1.73 to 4.97 μm (three samples with thicknesses of 1108±1, 2480±1, and 2660±1 μm) and in the range from 11.85–16.37 μm (sample thickness of 6000±1 μm). The no, ne, and Δn values determined from the positions of fringe maxima were compared to those obtained from prism measurements in the mid-IR and with previously published results which were mainly obtained by indirect methods. It was found that the prism method and interference fringe method resulted in values of no, ne, and Δn accurate to ±0.003 and ±0.006, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM (Metal) KW - SELENIDES KW - REFRACTIVE index KW - TEMPERATURE KW - OPTICAL interference KW - LIGHT N1 - Accession Number: 18905067; Allakhverdiev, K. R. 1; Email Address: kerim.allahverdi@mam.gov.tr Baykara, T. 2 Gulubayov, A. Kulibekov 3 Kaya, A. A. 2 Goldstein, J. 4 Fernelius, N. 4 Hanna, S. 5 Salaeva, Z. 2; Affiliation: 1: Marmara Research Centre of Turkish Scientific and Technical Research Council (TUBITAK), Materials Institute, P.K. 21, 41470 Gebze, Kocaeli, Turkey and Institute of Physics, Azerbaijan National Academy of Sciences, Huseyn Javid Avenue 33, 370143 Baku, Azerbaijan Republic 2: Marmara Research Centre of Turkish Scientific and Technical Research Council (TUBITAK), Materials Institute, P.K. 21, 41470 Gebze, Kocaeli, Turkey 3: Physics Department, Mugla University, 48000 Mugla, Turkey 4: Materials and Manufacturing Directorate, Air Force Research Laboratory, AFRL/MLPSO, Wright-Patterson Air-Force Base, Ohio 45433-7707 5: Institute of Physics, University of Bayreuth, D-95440 Bayreuth, Germany; Source Info: 11/1/2005, Vol. 98 Issue 9, p093515; Subject Term: GALLIUM (Metal); Subject Term: SELENIDES; Subject Term: REFRACTIVE index; Subject Term: TEMPERATURE; Subject Term: OPTICAL interference; Subject Term: LIGHT; Number of Pages: 6p; Illustrations: 2 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.2128694 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18905067&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, U. N. AU - Cui, Y. AU - Miles, R. AU - Burger, A. AU - Goldstein, Jonathan T. AU - Bell, Zane W. AU - Carpenter, Donald A. T1 - Micro-Raman and photoluminescence spectroscopies of horizontal Bridgman-grown AgGaSe2. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2005/11//11/1/2005 VL - 98 IS - 9 M3 - Article SP - 093523 PB - American Institute of Physics SN - 00218979 AB - AgGaSe2 crystals grown by the horizontal Bridgman technique were studied by room-temperature micro-Raman scattering and low-temperature photoluminescence (PL) spectroscopies. The most intense Raman line observed had the frequency of 177 cm-1, corresponding to the Γ1(W1) mode. The measurements were performed along the direction of growth of the boule and the line frequency was found to be almost constant within the experimental accuracy. The average full width at half maximum of the Γ1(W1) mode was found to be 4.6 cm-1 and its insignificant variation along the ingot suggests its structural and compositional uniformities. At low temperature (8 K), the main PL peak at 1.772 eV is due to donor-acceptor-pair recombination. A doublet in the excitonic peak, observed at that temperature, suggests a reduced inhomogeneous broadening and the better crystallinity of the sample, when compared with the previous literature. The dispersion of the various PL peaks along the length of the ingot was also found negligible, which indicates the compositional homogeneity and the uniform distribution of the intrinsic defects. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALS KW - LIGHT -- Scattering KW - LOW temperatures KW - PHOTOLUMINESCENCE KW - SPECTRUM analysis KW - INGOTS N1 - Accession Number: 18905040; Roy, U. N. 1 Cui, Y. 1 Miles, R. 1 Burger, A. 1; Email Address: aburger@fisk.edu Goldstein, Jonathan T. 2 Bell, Zane W. 3 Carpenter, Donald A. 4; Affiliation: 1: Department of Physics, Fisk University, Nashville, Tennessee 37208-3051 2: Air Force Research Laboratory, Wright Patterson Air Force Base (WPAFB), Ohio 45433 3: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 4: Y-12 National Security Complex, BWXT-Y12 L.L.C., Oak Ridge, Tennessee 37831; Source Info: 11/1/2005, Vol. 98 Issue 9, p093523; Subject Term: CRYSTALS; Subject Term: LIGHT -- Scattering; Subject Term: LOW temperatures; Subject Term: PHOTOLUMINESCENCE; Subject Term: SPECTRUM analysis; Subject Term: INGOTS; NAICS/Industry Codes: 423510 Metal Service Centers and Other Metal Merchant Wholesalers; Number of Pages: 5p; Illustrations: 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.2127128 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18905040&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sharma, Ramesh D. AU - Dao, Phan D. T1 - A potential experiment for in-situ measurement of atmospheric temperature and atomic oxygen density in the 90–150km altitude range by a Raman Lidar JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2005/11// VL - 67 IS - 16 M3 - Article SP - 1519 EP - 1523 SN - 13646826 AB - Abstract: The Raman backscatter cross sections for a 355nm light source for the three fine-structure components are calculated. The signal-to-noise considerations show that the determination of the densities of the three fine-structure components separately is a feasible experiment. Since these fine-structure components are calculated to be in local thermodynamic equilibrium up to at least 350km altitude, this experiment also gives atmospheric temperature. It is pointed out that this experiment does not suffer from the drawbacks of the previous efforts to determine atomic oxygen density and should yield reliable results for this density as well as temperature. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOSYNTHETIC oxygen evolution KW - ATMOSPHERIC temperature KW - GLOBAL temperature changes KW - MIDDLE atmosphere KW - Atomic oxygen density KW - In-situ measurement KW - Middle atmosphere KW - Raman scattering KW - Temperature N1 - Accession Number: 19044841; Sharma, Ramesh D.; Email Address: ramesh.sharma@hanscom.af.mil Dao, Phan D. 1; Affiliation: 1: Space Vehicles Directorate/VSBY, Air Force Research Laboratory, Hanscom AFB, MA 01731-3010, USA; Source Info: Nov2005, Vol. 67 Issue 16, p1519; Subject Term: PHOTOSYNTHETIC oxygen evolution; Subject Term: ATMOSPHERIC temperature; Subject Term: GLOBAL temperature changes; Subject Term: MIDDLE atmosphere; Author-Supplied Keyword: Atomic oxygen density; Author-Supplied Keyword: In-situ measurement; Author-Supplied Keyword: Middle atmosphere; Author-Supplied Keyword: Raman scattering; Author-Supplied Keyword: Temperature; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jastp.2005.08.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19044841&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Muszynski, Michael T1 - Spy Handler: Memoir of a KGB Officer. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2005/11// VL - 4 IS - 3 M3 - Book Review SP - 220 EP - 221 PB - Routledge SN - 15027570 AB - Reviews the book "Spy Handler: Memoir of a KGB Officer," by Victor Cherkashin and Gregory Feifer. KW - INTELLIGENCE service KW - NONFICTION KW - CHERKASHIN, Victor, 1932- KW - FEIFER, Gregory KW - SPY Handler: Memoir of a KGB Officer: The True Story of the Man Who Recruited Robert Hanssen & Aldrich Ames (Book) N1 - Accession Number: 18622156; Muszynski, Michael 1; Affiliation: 1: Instructor of Russian, United States Air Force Academy (Graduate, Joint Military Intelligence College); Source Info: Nov2005, Vol. 4 Issue 3, p220; Subject Term: INTELLIGENCE service; Subject Term: NONFICTION; Reviews & Products: SPY Handler: Memoir of a KGB Officer: The True Story of the Man Who Recruited Robert Hanssen & Aldrich Ames (Book); NAICS/Industry Codes: 928110 National Security; People: CHERKASHIN, Victor, 1932-; People: FEIFER, Gregory; Number of Pages: 2p; Document Type: Book Review L3 - 10.1080/15027570510030761 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18622156&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Salim, H. AU - Muller, P. AU - Dinan, R. T1 - Response of Conventional Steel Stud Wall Systems under Static and Dynamic Pressure. JO - Journal of Performance of Constructed Facilities JF - Journal of Performance of Constructed Facilities Y1 - 2005/11// VL - 19 IS - 4 M3 - Article SP - 267 EP - 276 PB - American Society of Civil Engineers SN - 08873828 AB - This research effort focuses on the evaluation of existing design standards for cold-formed steel stud walls and the development of retrofit wall systems. Full-scale wall systems are tested under uniform static pressure using a vacuum chamber. The resistance functions obtained are used to model the dynamic behavior of the walls and to predict performance under blast conditions. This paper focuses on defining the static resistance of nonload-bearing steel stud walls with slip track connections and their performance under external explosions. Simple modifications to existing design practice have significantly improved the blast performance of the steel stud walls. Maximum blast resistance is achieved by using steel angles connected to the studs and anchored to the floor and ceiling. The static and dynamic performances of five full-scale steel stud wall systems are presented in this paper. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Performance of Constructed Facilities is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STEEL KW - RETROFITTING KW - VACUUM KW - WALLS KW - FLOORS KW - CEILINGS KW - Cold-formed steel KW - Connections KW - Dynamic pressure KW - Explosions KW - Steel structures KW - Studs KW - Walls N1 - Accession Number: 18581111; Salim, H. 1; Email Address: SalimH@missouri.edu Muller, P. 2 Dinan, R. 3; Affiliation: 1: Assistant Professor, Dept. of Civil and Environmental Engineering, Univ. of Missouri-Columbia, Columbia, MO 65211 2: Structural Engineer, HLM Design, 125 Dubuque St., Iowa City, IA 52240-4003 3: Senior Research Engineer, Air Force Research Laboratory, AFRL/MLQF, Tyndall Air Force Base, FL 32404; Source Info: Nov2005, Vol. 19 Issue 4, p267; Subject Term: STEEL; Subject Term: RETROFITTING; Subject Term: VACUUM; Subject Term: WALLS; Subject Term: FLOORS; Subject Term: CEILINGS; Author-Supplied Keyword: Cold-formed steel; Author-Supplied Keyword: Connections; Author-Supplied Keyword: Dynamic pressure; Author-Supplied Keyword: Explosions; Author-Supplied Keyword: Steel structures; Author-Supplied Keyword: Studs; Author-Supplied Keyword: Walls; NAICS/Industry Codes: 238390 Other Building Finishing Contractors; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 331221 Rolled Steel Shape Manufacturing; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 10p; Illustrations: 3 Diagrams, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1061/(ASCE)0887-3828(2005)19:4(267) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18581111&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brungart, Douglas S. AU - Simpson, Brian D. AU - Freyman, Richard L. T1 - Precedence-based speech segregation in a virtual auditory environment. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2005/11// VL - 118 IS - 5 M3 - Article SP - 3241 EP - 3251 SN - 00014966 AB - When a masking sound is spatially separated from a target speech signal, substantial releases from masking typically occur both for speech and noise maskers. However, when a delayed copy of the masker is also presented at the location of the target speech (a condition that has been referred to as the front target, right-front masker or F-RF configuration), the advantages of spatial separation vanish for noise maskers but remain substantial for speech maskers. This effect has been attributed to precedence, which introduces an apparent spatial separation between the target and masker in the F-RF configuration that helps the listener to segregate the target from a masking voice but not from a masking noise. In this study, virtual synthesis techniques were used to examine variations of the F-RF configuration in an attempt to more fully understand the stimulus parameters that influence the release from masking obtained in that condition. The results show that the release from speech-on-speech masking caused by the addition of the delayed copy of the masker is robust across a wide variety of source locations, masker locations, and masker delay values. This suggests that the speech unmasking that occurs in the F-RF configuration is not dependent on any single perceptual cue and may indicate that F-RF speech segregation is only partially based on the apparent left-right location of the RF masker. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOUND KW - SIGNALS & signaling KW - NOISE KW - RADIO frequency KW - VOICE N1 - Accession Number: 20263603; Brungart, Douglas S. 1; Email Address: douglas.brungart@wpafb.af.mil Simpson, Brian D. 1 Freyman, Richard L. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 2: University of Massachusetts, Amherst, Massachusetts 01003; Source Info: Nov2005, Vol. 118 Issue 5, p3241; Subject Term: SOUND; Subject Term: SIGNALS & signaling; Subject Term: NOISE; Subject Term: RADIO frequency; Subject Term: VOICE; Number of Pages: 11p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1121/1.2082557 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20263603&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shang, J.S. AU - Surzhikov, S.T. AU - Kimmel, R. AU - Gaitonde, D. AU - Menart, J. AU - Hayes, J. T1 - Mechanisms of plasma actuators for hypersonic flow control JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences Y1 - 2005/11// VL - 41 IS - 8 M3 - Article SP - 642 EP - 668 SN - 03760421 AB - Abstract: A summary of recent research progress in hypersonic plasma actuators for flow control is attempted. It is found that the most effective plasma actuator is derived from an electromagnetic perturbation and amplifies by a subsequent viscous–inviscid interaction. Computational efforts using drift-diffusion theory and a simple phenomenological plasma model, as well as experiments in a hypersonic plasma channel, have shown the effectiveness of using electro–aerodynamic interaction as a hypersonic flow control mechanism. In principle, the plasma actuator based on magneto–aerodynamic interaction should have an added mechanism in the Lorentz force, making it even more effective as a flow control mechanism. However, this approach also incurs additional challenges and complications due to the Hall effect. Magneto–aerodynamic interactions have also been demonstrated for separated flow control, albeit in a very limited scope. Numerical simulations based on a simple phenomenological plasma model have shown the feasibility of separated flow suppression in shock-boundary-layer interaction over a compression ramp at a hypersonic flow of Mach 14.1. The control mechanism relies on the Lorentz force to energize the retarded shear layer in the viscous interacting region, but the effectiveness of momentum transfer via inelastic collision requires further validation. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUID dynamics KW - AUTOMATIC control KW - INTERNAL combustion engines -- Ignition KW - MOMENTUM transfer KW - FLUID mechanics N1 - Accession Number: 19842039; Shang, J.S. 1; Email Address: joseph.shang@wright.edu Surzhikov, S.T. 2 Kimmel, R. 3 Gaitonde, D. 3 Menart, J. 1 Hayes, J. 3; Affiliation: 1: Mechanical and Materials Engineering Department, Wright State University, Dayton, OH, USA 2: Russian Academy of Science, Moscow, Russia 3: Air Vehicles Directorate, Air Force Research Laboratory WPAFB, OH, USA; Source Info: Nov2005, Vol. 41 Issue 8, p642; Subject Term: FLUID dynamics; Subject Term: AUTOMATIC control; Subject Term: INTERNAL combustion engines -- Ignition; Subject Term: MOMENTUM transfer; Subject Term: FLUID mechanics; Number of Pages: 27p; Document Type: Article L3 - 10.1016/j.paerosci.2005.11.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19842039&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Newmiller, William T1 - The Navajo Code Talkers and Their Photographer. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Article SP - 6 EP - 21 PB - US Air Force Academy English Department SN - 10466967 AB - The article focuses on the Navajo Code Talkers, who contributed to the cause of the United States during World War II and who were eventually recognized as America's heroes. The Code Talkers emerged in the 1940s when young Navajo men, mostly sheepherders, joined the U.S. Marines and were tasked to create a code within their Navajo language that would be used for tactical communication during the war. The article goes on to focus on Kenji Kawano, the photographer of the Navajo Code Talkers. KW - NAVAJO code talkers KW - WORLD War, 1939-1945 KW - PHOTOGRAPHERS KW - UNITED States KW - KAWANO, Kenji N1 - Accession Number: 19134196; Newmiller, William 1; Affiliation: 1: United States Air Force Academy; Source Info: 2005, Vol. 17 Issue 1/2, p6; Subject Term: NAVAJO code talkers; Subject Term: WORLD War, 1939-1945; Subject Term: PHOTOGRAPHERS; Subject Term: UNITED States; NAICS/Industry Codes: 711511 Independent visual artists and artisans; NAICS/Industry Codes: 711510 Independent Artists, Writers, and Performers; People: KAWANO, Kenji; Number of Pages: 16p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19134196&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Lemp, Richard W. T1 - Comic Metamorphosis of the (Anti) Hero in Roch Carrier's WWII Novels. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Literary Criticism SP - 74 EP - 86 PB - US Air Force Academy English Department SN - 10466967 AB - The article examines the comic metamorphosis of the hero in Canadian author Roch Carrier's World War II novels, such as "La Guerre, Yes Sir!" and "Petit Homme Tornade." It argues that the main quest, if any, in "La Guerre, Yes Sir!" is more a journey away from the heroic rather than an engagement in it. It also discusses the inseparability of sexuality and warfare in the novel. The article also highlights the key themes of healing and restoration in "Petit Homme Tornade." KW - WORLD War, 1939-1945 KW - WAR in literature KW - FICTION KW - CARRIER, Roch KW - LA Guerre, Yes Sir! (Book) KW - PETIT Homme Tornade (Book) N1 - Accession Number: 19134263; Lemp, Richard W. 1; Affiliation: 1: United States Air Force Academy; Source Info: 2005, Vol. 17 Issue 1/2, p74; Subject Term: WORLD War, 1939-1945; Subject Term: WAR in literature; Subject Term: FICTION; Reviews & Products: LA Guerre, Yes Sir! (Book); Reviews & Products: PETIT Homme Tornade (Book); People: CARRIER, Roch; Number of Pages: 13p; Document Type: Literary Criticism UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19134263&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, James L. T1 - Reproaching the Military Hero Sans Peur. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Article SP - 87 EP - 101 PB - US Air Force Academy English Department SN - 10466967 AB - The article examines the role of fear in heroism via an analysis of philosophical and literary conceptualizations of heroism. It considers whether fear should be a necessary component of heroism and whether valor or courage needs to incorporate the sort of fear which a reasonable person would experience in certain situations such as war. KW - COURAGE KW - FEAR KW - HEROES KW - WAR KW - PHILOSOPHY KW - LITERATURE N1 - Accession Number: 19134266; Cook, James L. 1; Affiliation: 1: Department of Philosophy, United States Air Force Academy; Source Info: 2005, Vol. 17 Issue 1/2, p87; Subject Term: COURAGE; Subject Term: FEAR; Subject Term: HEROES; Subject Term: WAR; Subject Term: PHILOSOPHY; Subject Term: LITERATURE; Number of Pages: 15p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19134266&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Burns, Robert W. T1 - "More Frail and Mortal": The Wound of Fear in Philip Caputo's In the Forest of the Laughing Elephant. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Literary Criticism SP - 102 EP - 107 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents a critique of Philip Caputo's novella "In the Forest of the Laughing Elephant." It looks at how the work illustrates the hero myth and notes how Caputo addresses the hero theme in ways similar to author D. H. Lawrence in "The Ghosts of Tsavo: Stalking the Mystery Lions of East Africa." KW - PROTAGONISTS (Persons) in literature KW - CRITICISM KW - CHARACTER KW - COURAGE KW - FICTION KW - CAPUTO, Philip KW - LAWRENCE, D. H. (David Herbert), 1885-1930 N1 - Accession Number: 19134270; Burns, Robert W. 1; Affiliation: 1: United States Air Force Academy; Source Info: 2005, Vol. 17 Issue 1/2, p102; Subject Term: PROTAGONISTS (Persons) in literature; Subject Term: CRITICISM; Subject Term: CHARACTER; Subject Term: COURAGE; Subject Term: FICTION; People: CAPUTO, Philip; People: LAWRENCE, D. H. (David Herbert), 1885-1930; Number of Pages: 6p; Document Type: Literary Criticism UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19134270&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McGuire, Thomas T1 - Friends from Other Wars: Four Transcreative Translations. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Article SP - 129 EP - 136 PB - US Air Force Academy English Department SN - 10466967 AB - The article presents "The Poem of Force," translated and adapted from Simone Weil's 1940 essay "L'Iliad, ou Le Poem de la Force," and "From Salamis in Cyprus to Babylon," which is composed of adapted fragments of a 1953 George Seferis poem written in response to the Greek-Turkish conflict. These translations were produced by the author between March 2003 and June 2004. KW - POETRY (Literary form) -- Translating KW - TRANSLATING & interpreting KW - SEFERIS, George, 1900-1971 KW - WEIL, Simone, 1909-1943 KW - POEM of Force, The (Poem) KW - FROM Salamis in Cyprus to Babylon (Poem) N1 - Accession Number: 19134284; McGuire, Thomas 1; Affiliation: 1: English and Fine Arts Department, United States Air Force Academy; Source Info: 2005, Vol. 17 Issue 1/2, p129; Subject Term: POETRY (Literary form) -- Translating; Subject Term: TRANSLATING & interpreting; Reviews & Products: POEM of Force, The (Poem); Reviews & Products: FROM Salamis in Cyprus to Babylon (Poem); NAICS/Industry Codes: 541930 Translation and Interpretation Services; People: SEFERIS, George, 1900-1971; People: WEIL, Simone, 1909-1943; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19134284&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Muenger, Elizabeth A. T1 - The Gift of Valor: A War Story. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Book Review SP - 329 EP - 331 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "The Gift of Valor: A War Story," by Michael M. Phillips. KW - WAR KW - NONFICTION KW - PHILLIPS, Michael M. KW - GIFT of Valor: A War Story, The (Book) N1 - Accession Number: 19134475; Muenger, Elizabeth A. 1; Affiliation: 1: United States Air Force Academy; Source Info: 2005, Vol. 17 Issue 1/2, p329; Subject Term: WAR; Subject Term: NONFICTION; Reviews & Products: GIFT of Valor: A War Story, The (Book); People: PHILLIPS, Michael M.; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19134475&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Torke, Kyle T1 - Old Glory: American War Poems from the Revolutionary War to the War on Terror. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Book Review SP - 331 EP - 334 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "Old Glory: American War Poems from the Revolutionary War to the War on Terror," edited by Robert Hedin. KW - WAR poetry KW - FICTION KW - HEDIN, Robert KW - OLD Glory: American War Poems From the Revolutionary War to the War on Terrorism (Book) N1 - Accession Number: 19134480; Torke, Kyle 1; Affiliation: 1: United States Air Force Academy; Source Info: 2005, Vol. 17 Issue 1/2, p331; Subject Term: WAR poetry; Subject Term: FICTION; Reviews & Products: OLD Glory: American War Poems From the Revolutionary War to the War on Terrorism (Book); People: HEDIN, Robert; Number of Pages: 4p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19134480&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buchanan, Dave T1 - Baby, Let's Make a Baby. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Book Review SP - 335 EP - 336 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "Baby, Let's Make a Baby," by Kirk Curnutt. KW - MAN-woman relationships KW - FICTION KW - CURNUTT, Kirk KW - BABY, Let's Make a Baby (Book) N1 - Accession Number: 19134490; Buchanan, Dave 1; Affiliation: 1: United States Air Force Academy; Source Info: 2005, Vol. 17 Issue 1/2, p335; Subject Term: MAN-woman relationships; Subject Term: FICTION; Reviews & Products: BABY, Let's Make a Baby (Book); People: CURNUTT, Kirk; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19134490&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Newmiller, William T1 - Amache: The Story of Japanese Internment in Colorado During World War II. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Book Review SP - 339 EP - 341 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "Amache: The Story of Japanese Internment in Colorado During World War II," by Robert Harvey. KW - JAPANESE Americans -- Evacuation & relocation, 1942-1945 KW - NONFICTION KW - GRANADA Relocation Center KW - HARVEY, Robert KW - AMACHE: The Story of Japanese Internment in Colorado During World War II (Book) N1 - Accession Number: 19134502; Newmiller, William 1; Affiliation: 1: United States Air Force Academy; Source Info: 2005, Vol. 17 Issue 1/2, p339; Subject Term: JAPANESE Americans -- Evacuation & relocation, 1942-1945; Subject Term: NONFICTION; Company/Entity: GRANADA Relocation Center; Reviews & Products: AMACHE: The Story of Japanese Internment in Colorado During World War II (Book); People: HARVEY, Robert; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19134502&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coakley, Thomas T1 - Understanding the Literature of World War I: a Student Casebook to Issues, Sources, and Historical Documents. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Book Review SP - 343 EP - 345 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "Understanding the Literature of World War I: A Student Casebook to Issues, Sources, and Historical Documents," by James H. Meredith. KW - WORLD War, 1914-1918 KW - NONFICTION KW - MEREDITH, James, 1933- KW - UNDERSTANDING the Literature of World War I: A Student Casebook to Issues, Sources & Historical Documents (Book) N1 - Accession Number: 19134510; Coakley, Thomas 1; Affiliation: 1: United States Air Force Academy; Source Info: 2005, Vol. 17 Issue 1/2, p343; Subject Term: WORLD War, 1914-1918; Subject Term: NONFICTION; Reviews & Products: UNDERSTANDING the Literature of World War I: A Student Casebook to Issues, Sources & Historical Documents (Book); People: MEREDITH, James, 1933-; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19134510&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McCarty, Steven W. T1 - America the Vulnerable: How our Government is Failing to Protect Us from Terrorism. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2005/11// VL - 17 IS - 1/2 M3 - Book Review SP - 345 EP - 348 PB - US Air Force Academy English Department SN - 10466967 AB - The article reviews the book "America the Vulnerable: How our Government is Failing to Protect Us from Terrorism," by Stephen Flynn. KW - TERRORISM KW - NONFICTION KW - FLYNN, Stephen KW - AMERICA the Vulnerable: How Our Government Is Failing to Protect Us From Terrorism (Book) N1 - Accession Number: 19134513; McCarty, Steven W. 1; Affiliation: 1: United States Air Force Academy; Source Info: 2005, Vol. 17 Issue 1/2, p345; Subject Term: TERRORISM; Subject Term: NONFICTION; Reviews & Products: AMERICA the Vulnerable: How Our Government Is Failing to Protect Us From Terrorism (Book); People: FLYNN, Stephen; Number of Pages: 4p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19134513&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fang, Z.-Q. AU - Look, D. C. AU - Kim, D. H. AU - Adesida, I. T1 - Traps in AlGaN/GaN/SiC heterostructures studied by deep level transient spectroscopy. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/10/31/ VL - 87 IS - 18 M3 - Article SP - 182115 PB - American Institute of Physics SN - 00036951 AB - AlGaN/GaN/SiC Schottky barrier diodes (SBDs), with and without Si3N4 passivation, have been characterized by temperature-dependent current-voltage and capacitance-voltage measurements, and deep level transient spectroscopy (DLTS). A dominant trap A1, with activation energy of 1.0 eV and apparent capture cross section of 2×10-12 cm2, has been observed in both unpassivated and passivated SBDs. Based on the well-known logarithmic dependence of DLTS peak height with filling pulse width for a line-defect related trap, A1, which is commonly observed in thin GaN layers grown by various techniques, is believed to be associated with threading dislocations. At high temperatures, the DLTS signal sometimes becomes negative, likely due to an artificial surface-state effect. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCHOTTKY-barrier diodes KW - SEMICONDUCTOR diodes KW - SPECTRUM analysis KW - CAPACITANCE meters KW - ELECTRIC capacity KW - ORGANOMETALLIC compounds KW - SUPERLATTICES KW - HETEROSTRUCTURES KW - HETEROJUNCTIONS N1 - Accession Number: 18795515; Fang, Z.-Q. 1,2; Email Address: zhaoqiang.fang@wright.edu Look, D. C. 1,2 Kim, D. H. 3 Adesida, I. 3; Affiliation: 1: Semiconductor Research Center, Wright State University, Dayton, Ohio 45435 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 3: Micro and Nanotechnology Laboratory and Department of Electrical and Computer Engineering, University of Illinois, Urbana, Illinois 61801; Source Info: 10/31/2005, Vol. 87 Issue 18, p182115; Subject Term: SCHOTTKY-barrier diodes; Subject Term: SEMICONDUCTOR diodes; Subject Term: SPECTRUM analysis; Subject Term: CAPACITANCE meters; Subject Term: ELECTRIC capacity; Subject Term: ORGANOMETALLIC compounds; Subject Term: SUPERLATTICES; Subject Term: HETEROSTRUCTURES; Subject Term: HETEROJUNCTIONS; Number of Pages: 3p; Illustrations: 7 Graphs; Document Type: Article L3 - 10.1063/1.2126145 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18795515&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Hung-Ta AU - Kang, B. S. AU - Ren, F. AU - Fitch, R. C. AU - Gillespie, J. K. AU - Moser, N. AU - Jessen, G. AU - Jenkins, T. AU - Dettmer, R. AU - Via, D. AU - Crespo, A. AU - Gila, B. P. AU - Abernathy, C. R. AU - Pearton, S. J. T1 - Comparison of gate and drain current detection of hydrogen at room temperature with AlGaN/GaN high electron mobility transistors. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/10/24/ VL - 87 IS - 17 M3 - Article SP - 172105 PB - American Institute of Physics SN - 00036951 AB - Pt-gated AlGaN/GaN high electron mobility transistors can be used as room-temperature hydrogen gas sensors at hydrogen concentrations as low as 100 ppm. A comparison of the changes in drain and gate current-voltage (I-V) characteristics with the introduction of 500 ppm H2 into the measurement ambient shows that monitoring the change in drain-source current provides a wider gate voltage operation range for maximum detection sensitivity and higher total current change than measuring the change in gate current. However, over a narrow gate voltage range, the relative sensitivity of detection by monitoring the gate current changes is up to an order of magnitude larger than that of drain-source current changes. In both cases, the changes are fully reversible in <2–3 min at 25 °C upon removal of the hydrogen from the ambient. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - HYDROGEN KW - PARTICLES (Nuclear physics) KW - FREE electron theory of metals KW - ELECTRONICS KW - SEMICONDUCTORS KW - TRANSISTORS N1 - Accession Number: 18737996; Wang, Hung-Ta 1 Kang, B. S. 1 Ren, F. 1 Fitch, R. C. 2 Gillespie, J. K. 2 Moser, N. 2 Jessen, G. 2 Jenkins, T. 2 Dettmer, R. 2 Via, D. 2 Crespo, A. 2 Gila, B. P. 3 Abernathy, C. R. 3 Pearton, S. J. 3; Email Address: spear@mse.ufl.edu; Affiliation: 1: Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611 2: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Dayton, Ohio 45433-7322 3: Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611; Source Info: 10/24/2005, Vol. 87 Issue 17, p172105; Subject Term: ELECTRONS; Subject Term: HYDROGEN; Subject Term: PARTICLES (Nuclear physics); Subject Term: FREE electron theory of metals; Subject Term: ELECTRONICS; Subject Term: SEMICONDUCTORS; Subject Term: TRANSISTORS; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.2117617 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18737996&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gila, B. P. AU - Hlad, M. AU - Onstine, A. H. AU - Frazier, R. AU - Thaler, G. T. AU - Herrero, A. AU - Lambers, E. AU - Abernathy, C. R. AU - Pearton, S. J. AU - Anderson, T. AU - Jang, S. AU - Ren, F. AU - Moser, N. AU - Fitch, R. C. AU - Freund, M. T1 - Improved oxide passivation of AlGaN/GaN high electron mobility transistors. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/10/17/ VL - 87 IS - 16 M3 - Article SP - 163503 PB - American Institute of Physics SN - 00036951 AB - MgO has proven effective in the past as a surface passivation layer to minimize current collapse in AlGaN/GaN high electron mobility transistors (HEMTs). However, MgO is not environmentally stable and more stable oxides need to be developed. MgCaO can be produced that is lattice matched to the GaN. Three samples were grown with 0%, 50% and 75% of Ca, which had respective lattice mismatches of -6.5% for MgO, -1% for Mg0.50Ca0.50O and +4% for Mg0.25Ca0.75O. Drain saturation current in HENTs had increases of 4.5% and 1%, respectively, for Mg0.5Ca0.5O and Mg0.25Ca0.75O passivated devices. However, there was a 10% decrease for the device passivated with pure MgO. This was due to strain applied on the nitride HEMT by the oxide, which is consistent with the piezoelectric effect in the nitride HEMT by the oxide, which is consistent with the piezoelectric effect in the nitride form the lattice mismatch between AlGaN and GaN. From pulsed measurements, HEMTs passivated with Mg0.5Ca0.5O and Mg0.25Ca0.75O showed higher passivation effectiveness (90% of dc current) then the MgO passivated HEMTs (83% dc current). This is due to the closer lattice matching of these calcium containing oxides and the reduction in interface traps associated with lattice mismatch. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUCLEAR physics KW - OXIDES KW - TRANSISTORS KW - ELECTRONS KW - MAGNESIUM KW - METALS N1 - Accession Number: 18650165; Gila, B. P. 1 Hlad, M. 1 Onstine, A. H. 1 Frazier, R. 1 Thaler, G. T. 1 Herrero, A. 1 Lambers, E. 1 Abernathy, C. R. 1 Pearton, S. J. 1; Email Address: spear@mse.ufl.edu Anderson, T. 2 Jang, S. 2 Ren, F. 2 Moser, N. 3 Fitch, R. C. 3 Freund, M. 3; Affiliation: 1: University of Florida, Materials Science and Engineering, Gainesville, Florida 32611 2: University of Florida, Chemical Engineering, Gainesville, Florida 32611 3: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433; Source Info: 10/17/2005, Vol. 87 Issue 16, p163503; Subject Term: NUCLEAR physics; Subject Term: OXIDES; Subject Term: TRANSISTORS; Subject Term: ELECTRONS; Subject Term: MAGNESIUM; Subject Term: METALS; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.2105987 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18650165&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grant, J.T. AU - Jiang, Hao AU - Tullis, S. AU - Johnson, W.E. AU - Eyink, K. AU - Fleitz, P. AU - Bunning, T.J. T1 - The growth and characterization of photonic thin films JO - Vacuum JF - Vacuum Y1 - 2005/10/14/ VL - 80 IS - 1-3 M3 - Article SP - 12 EP - 19 SN - 0042207X AB - Abstract: Photonic thin films have been grown on a variety of substrates using plasma-enhanced chemical vapor deposition (PECVD) of organic monomers, namely benzene and octafluorocyclobutane (OFCB). Films produced by both homo-polymerization and co-polymerization have been prepared and analyzed. In order to introduce significant contributions from OFCB into co-polymerized films, the OFCB was introduced directly into the plasma zone and the benzene flow was reduced to a low, stable level using a high-accuracy metering valve. The films have been characterized by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR) and variable-angle spectroscopic ellipsometry (VASE), with an emphasis on XPS. Apart from determining the atomic composition of the films with XPS, it was extremely valuable in determining the chemistry of the films. Studies of the mechanisms of the homo- and co-polymerization reactions have aided in the fabrication of photonic films. [Copyright &y& Elsevier] AB - Copyright of Vacuum is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - PHOTOELECTRON spectroscopy KW - CHEMICAL reactions KW - POLYMERIZATION KW - ELLIPSOMETRY KW - CVD KW - FTIR KW - polymerization KW - Thin films KW - VASE KW - XPS N1 - Accession Number: 18627670; Grant, J.T. 1 Jiang, Hao 2 Tullis, S. 3 Johnson, W.E. 3 Eyink, K. 3 Fleitz, P. 3 Bunning, T.J. 3; Email Address: Timothy.Bunning@wpafb.af.mil; Affiliation: 1: Research Institute, University of Dayton, 300 College Park, Dayton, OH 45469-0168, USA 2: Anteon Corporation, 5100 Springfield Pike, Dayton, OH 45431, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Oct2005, Vol. 80 Issue 1-3, p12; Subject Term: THIN films; Subject Term: PHOTOELECTRON spectroscopy; Subject Term: CHEMICAL reactions; Subject Term: POLYMERIZATION; Subject Term: ELLIPSOMETRY; Author-Supplied Keyword: CVD; Author-Supplied Keyword: FTIR; Author-Supplied Keyword: polymerization; Author-Supplied Keyword: Thin films; Author-Supplied Keyword: VASE; Author-Supplied Keyword: XPS; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.vacuum.2005.07.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18627670&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hood, Andrew AU - Razeghi, Manijeh AU - Aifer, Edward H. AU - Brown, Gail J. T1 - On the performance and surface passivation of type II InAs/GaSb superlattice photodiodes for the very-long-wavelength infrared. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/10/10/ VL - 87 IS - 15 M3 - Article SP - 151113 PB - American Institute of Physics SN - 00036951 AB - We demonstrate very-long-wavelength infrared type II InAs/GaSb superlattice photodiodes with a cutoff wavelength (λc,50%) of 17 μm. We observed a zero-bias, peak Johnson noise-limited detectivity of 7.63×109 cm Hz1/2/W at 77 K with a 90%–10% cutoff width of 17 meV, and quantum efficiency of 30%. Variable area diode zero-bias resistance-area product (R0A) measurements indicated that silicon dioxide passivation increased surface resistivity by nearly a factor of 5, over unpassivated photodiodes, and increased overall R0A uniformity. The bulk R0A at 77 K was found to be 0.08 Ω cm2, with RA increasing more than twofold at 25 mV reverse bias. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVELENGTHS KW - SUPERLATTICES KW - PHOTODIODES KW - SEMICONDUCTOR diodes KW - SILICA KW - PHYSICS N1 - Accession Number: 18856948; Hood, Andrew 1 Razeghi, Manijeh 1; Email Address: razeghi@ece.northwestern.edu Aifer, Edward H. 2 Brown, Gail J. 3; Affiliation: 1: Center for Quantum Devices, Department of Electrical and Computer Engineering, Northwestern University, Evanston, Illinois 60208 2: Naval Research Laboratory, Washington, DC 20375 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLPS, Wright Patterson AFB, Ohio 45433-7707; Source Info: 10/10/2005, Vol. 87 Issue 15, p151113; Subject Term: WAVELENGTHS; Subject Term: SUPERLATTICES; Subject Term: PHOTODIODES; Subject Term: SEMICONDUCTOR diodes; Subject Term: SILICA; Subject Term: PHYSICS; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.2089170 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18856948&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Szmulowicz, Frank T1 - New analytic and computational formalism for the band structure of N-layer photonic crystals JO - Physics Letters A JF - Physics Letters A Y1 - 2005/10/03/ VL - 345 IS - 4-6 M3 - Article SP - 469 EP - 477 SN - 03759601 AB - Abstract: This Letter presents a new analytic and computational formalism for the eigenfrequency spectra of arbitrary, one-dimensional, N-layer photonic band gap (PBG) materials. The secular equation is formulated in terms of tangents only, a form that has the following beneficial attributes: (a) a compact, algorithmically simple, Hermitian eigenvalue–eigenvector problem (real symmetric at symmetry points) that can be diagonalized once to find both the eigenfrequencies and associated wave amplitudes, and (b) a transparent analytical structure that can be exploited to gain additional insights such as physically appealing, geometric representations of the eigenfrequency condition and analytic forms not otherwise available. The formalism is demonstrated on the example of an eighth-wave/quarter-wave/half-wave PBG stack. [Copyright &y& Elsevier] AB - Copyright of Physics Letters A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRUM analysis KW - QUALITATIVE chemical analysis KW - OPTICS KW - THEORY of wave motion KW - ABSORPTION spectra KW - 02.60.Cb KW - 03.65.Ge KW - 42.70.Qs KW - Band structure KW - Layers KW - One-dimensional KW - Photonic band gap N1 - Accession Number: 18283416; Szmulowicz, Frank 1; Email Address: frank.szmulowicz@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright–Patterson AFB, OH 45433-7707, USA; Source Info: Oct2005, Vol. 345 Issue 4-6, p469; Subject Term: SPECTRUM analysis; Subject Term: QUALITATIVE chemical analysis; Subject Term: OPTICS; Subject Term: THEORY of wave motion; Subject Term: ABSORPTION spectra; Author-Supplied Keyword: 02.60.Cb; Author-Supplied Keyword: 03.65.Ge; Author-Supplied Keyword: 42.70.Qs; Author-Supplied Keyword: Band structure; Author-Supplied Keyword: Layers; Author-Supplied Keyword: One-dimensional; Author-Supplied Keyword: Photonic band gap; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.physleta.2005.07.047 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18283416&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Hagstad, David T1 - Bound for Iraq. JO - American Journal of Nursing JF - American Journal of Nursing Y1 - 2005/10// VL - 105 IS - 10 M3 - Letter SP - 78 EP - 79 SN - 0002936X AB - Presents the article author's, master sergeant in the Louisiana Air National Guard, United States Air Force, views on various issues before leaving home to serve in Iraq. Details of his colleagues and uniform for his assignment in Iraq; Briefings attended by him given by various squadrons about current threats in Iraq; Description of the facilities provided by the U.S. Airforce Expeditionary Medical Support System in Iraq. KW - MILITARY personnel KW - SOLDIERS' letters KW - WAR KW - MEDICAL personnel KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 18532234; Hagstad, David 1; Email Address: david•in•balad@yahoo.com; Affiliation: 1: Master Sergeant in Louisiana Air National Guard, United States Air Force.; Source Info: Oct2005, Vol. 105 Issue 10, p78; Subject Term: MILITARY personnel; Subject Term: SOLDIERS' letters; Subject Term: WAR; Subject Term: MEDICAL personnel; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 2p; Document Type: Letter UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18532234&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Marcum, S.D. AU - Ganguly, B.N. T1 - Electric-field-induced flame speed modification JO - Combustion & Flame JF - Combustion & Flame Y1 - 2005/10// VL - 143 IS - 1/2 M3 - Article SP - 27 EP - 36 SN - 00102180 AB - Abstract: The effects of pulsed and continuous DC electric fields on the reaction zones of premixed propane–air flames have been investigated using several types of experimental measurements. All observed effects on the flame are dependent on the applied voltage polarity, indicating that negatively charged flame species do not play a role in the perturbation of the reaction zone. Experiments designed to characterize the electric-field-induced modifications of the shape and size of the inner cone, and the concomitant changes in the temperature profiles of flames with equivalence ratios between 0.8 and 1.7, are also reported. High-speed two-dimensional imaging of the flame response to a pulsed DC voltage shows that the unperturbed conical flame front (laminar flow) is driven into a wrinkled laminar flamelet (cellular) geometry on a time scale of the order of 5 ms. Temperature distributions derived from thin filament pyrometry (TFP) measurements in flames perturbed by continuous DC fields show similar large changes in the reaction zone geometry, with no change in maximum flame temperature. All measurements are consistent with the observed flame perturbations being a fluid mechanical response to the applied field brought about by forcing positive flame ions counter to the flow. The resulting electric pressure decreases Lewis numbers of the ionic species and drives the effective flame Lewis number below unity. The observed increases in flame speed and the flame fronts trend toward turbulence can be described in terms of the flame front wrinkling and concomitant increase in reaction sheet area. This effect is a potentially attractive means of controlling flame fluid mechanical characteristics. The observed effects require minimal input electrical power (<1 W for a 1 kW burner) due to the much better electric field coupling achieved in the present experiments compared to the previous studies. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC fields KW - FLUID dynamics KW - LAMINAR flow KW - ELECTROMAGNETIC fields KW - Electric field KW - Flame speed KW - Hydrocarbon combustion N1 - Accession Number: 18344032; Marcum, S.D. 1 Ganguly, B.N. 2; Email Address: biswa.ganguly@wpafb.af.mil; Affiliation: 1: Department of Physics, Miami University, Oxford, OH 45056, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Oct2005, Vol. 143 Issue 1/2, p27; Subject Term: ELECTRIC fields; Subject Term: FLUID dynamics; Subject Term: LAMINAR flow; Subject Term: ELECTROMAGNETIC fields; Author-Supplied Keyword: Electric field; Author-Supplied Keyword: Flame speed; Author-Supplied Keyword: Hydrocarbon combustion; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.combustflame.2005.04.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18344032&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Madero-Craven, Monica AU - Herzinger, Kurt T1 - Apery Sets of Numerical Semigroups #. JO - Communications in Algebra JF - Communications in Algebra Y1 - 2005/10// VL - 33 IS - 10 M3 - Article SP - 3831 EP - 3838 SN - 00927872 AB - Let S be a numerical semigroup. We examine a particular subset of the Apery set of S and establish a correspondence between this subset and the holes of S . This correspondence allows us to establish conditions for S to be almost symmetric. [ABSTRACT FROM AUTHOR] AB - Copyright of Communications in Algebra is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMIGROUPS (Algebra) KW - GROUP theory KW - ALGEBRA KW - MATHEMATICS KW - MATHEMATICAL analysis KW - Apery set KW - Numerical semigroup N1 - Accession Number: 18711265; Madero-Craven, Monica 1 Herzinger, Kurt 1; Email Address: kurt.herzinger@usafa.af.mil; Affiliation: 1: Department of Mathematical Sciences, United States Air Force Academy, USAF Academy, Colorado, U.S.A; Source Info: Oct2005, Vol. 33 Issue 10, p3831; Subject Term: SEMIGROUPS (Algebra); Subject Term: GROUP theory; Subject Term: ALGEBRA; Subject Term: MATHEMATICS; Subject Term: MATHEMATICAL analysis; Author-Supplied Keyword: Apery set; Author-Supplied Keyword: Numerical semigroup; Number of Pages: 8p; Document Type: Article L3 - 10.1080/00927870500242942 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18711265&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barnes, Paul N. AU - Sumption, Michael D. AU - Rhoads, Gregory L. T1 - Review of high power density superconducting generators: Present state and prospects for incorporating YBCO windings JO - Cryogenics JF - Cryogenics Y1 - 2005/10// VL - 45 IS - 10/11 M3 - Article SP - 670 EP - 686 SN - 00112275 AB - Abstract: This work focuses on the development of high power density generators for airborne applications by bridging the chasm between generator and high temperature superconducting (HTS) wire developmental efforts. Benefits of HTS power generation include improved efficiency, thermal management reduction, improved power handling, reduced life cycle costs, and size and weight reduction. Superconducting generator development from the 1970s is outlined, and the basic types of ac synchronous generators are described. The benefits of HTS conductors in general and HTS coated conductors in particular are discussed. Critical issues for the employment of HTS coated conductors are then considered and recommendations made for enhancements to the HTS coated conductor for implementation in the more advanced superconducting power generators. [Copyright &y& Elsevier] AB - Copyright of Cryogenics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTORS KW - ELECTRIC generators KW - ELECTRIC power production KW - ELECTRIC generators -- Alternating current KW - High T c superconductors KW - Rotating electric machinery KW - Superconducting generators KW - Superconducting tapes KW - YBCO coated conductor N1 - Accession Number: 19043814; Barnes, Paul N. 1; Email Address: paul.barnes@wpafb.af.mil Sumption, Michael D. 2 Rhoads, Gregory L. 1; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, Bldg 450, 2645 Fifth Street, Wright-Patterson AFB, OH 45433, USA 2: Department of Materials Science and Engineering, Ohio State University, Columbus, OH 43210, USA; Source Info: Oct2005, Vol. 45 Issue 10/11, p670; Subject Term: SUPERCONDUCTORS; Subject Term: ELECTRIC generators; Subject Term: ELECTRIC power production; Subject Term: ELECTRIC generators -- Alternating current; Author-Supplied Keyword: High T c superconductors; Author-Supplied Keyword: Rotating electric machinery; Author-Supplied Keyword: Superconducting generators; Author-Supplied Keyword: Superconducting tapes; Author-Supplied Keyword: YBCO coated conductor; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 221112 Fossil Fuel Electric Power Generation; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.cryogenics.2005.09.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19043814&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Geri, George A. AU - Winterbottom, Marc D. T1 - Effect of display resolution and antialiasing on the discrimination of simulated-aircraft orientation JO - Displays JF - Displays Y1 - 2005/10// VL - 26 IS - 4/5 M3 - Article SP - 159 EP - 169 SN - 01419382 AB - Abstract: In Experiment 1, antialiasing was found to improve performance on an orientation-discrimination task, whereas increasing display pixel-count did not. The latter finding was attributed to a decrease in image contrast associated with driving the CRT beyond its effective bandwidth. In Experiment 2, it was found that display resolution is the primary determinant of orientation-discrimination performance. This performance was not significantly improved by increasing antialiasing beyond a minimal level, suggesting that greater image detail can be substituted for antialias filtering. Finally, data obtained from an objective target-size calibration showed that nominal target size often does not accurately reflect the size (and hence distance) of simulated targets. [Copyright &y& Elsevier] AB - Copyright of Displays is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VIDEO display terminals KW - DATA transmission systems KW - DIGITAL communications KW - CALIBRATION KW - Antialiasing KW - CRT displays KW - Orientation-discrimination KW - Spatial resolution N1 - Accession Number: 18781183; Geri, George A. 1; Email Address: george.geri@mesa.afmc.af.mil Winterbottom, Marc D. 2; Affiliation: 1: Link Simulation and Training, 6030 S. Kent Street, Mesa, AZ 85212, USA 2: Air Force Research Laboratory, 6030 S. Kent Street, Mesa, AZ 85212, USA; Source Info: Oct2005, Vol. 26 Issue 4/5, p159; Subject Term: VIDEO display terminals; Subject Term: DATA transmission systems; Subject Term: DIGITAL communications; Subject Term: CALIBRATION; Author-Supplied Keyword: Antialiasing; Author-Supplied Keyword: CRT displays; Author-Supplied Keyword: Orientation-discrimination; Author-Supplied Keyword: Spatial resolution; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.displa.2005.06.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18781183&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tyo, J. Scott AU - Farr, Everett G. AU - Lawry, Dean I. T1 - Effect of Defocus on the Prompt Response of a Reflector IRA. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2005/10// VL - 53 IS - 10 M3 - Article SP - 3247 EP - 3254 SN - 0018926X AB - Impulse radiating antennas (IRAs) are an emerging class of antenna that are designed to radiate extremely short electromagnetic pulses with multiple decades of instantaneous band-width. The most common IRAs are made with a transverse electromagnetic (TEM) transmission line feeding a paraboloidal reflector. The IRA is usually constructed so that the electrical feed point of the TEM transmission line coincides with the focal point of the paraboloid. The paraboloidal reflector converts the spherical wave emanating from the feed point into a plane wave (i.e., a spherical wave centered at - ∞). In many practical cases, the feed point and focal points are not exactly aligned, producing some defocus of the reflector. In this paper, we model the case of hyperbolic defocus because of its analytic form and compare this model with experimental measurements. A hyperboloidal reflector fed from one focus converts the expanding spherical wave into a second expanding wave which appears to emanate from the second focal point of the hyperboloid (which is behind the reflector). Hyperboloidal defocus is roughly equivalent to moving the electrical feed closer to the reflector than the optical focal point. Previous theoretical results from in-focus IRAs predicted that the E- and H-plane temporal responses should be symmetric with respect to the temporal center of the response. The results shown here demonstrate that the defocusing causes these responses to become asymmetric. The new results are in better agreement with experimental measurements of IRAs and provide a physical explanation for experimental results that differ from the original theory. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNAS (Electronics) KW - ELECTRONIC apparatus & appliances KW - RADIATION KW - ELECTROMAGNETIC pulses KW - COMPTON effect KW - ELECTRIC lines KW - Impulse radiating antennas (IRAs) KW - physical optics KW - time-domain electromagnetics KW - ultrawide-band (UWB) antennas KW - UWB electromagnetics N1 - Accession Number: 18580311; Tyo, J. Scott 1; Email Address: tyo@ieee.org Farr, Everett G. 2; Email Address: efarr@farr-research.com Lawry, Dean I. 3; Email Address: dean.lawry@kirtland.af.mil; Affiliation: 1: Electrical Engineering and Computer Engineering Department, University of New Mexico, Albuquerque, NM 87131 USA. 2: Farr Research, Inc., Albuquerque, NM 87123 USA. 3: Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117 USA.; Source Info: Oct2005, Vol. 53 Issue 10, p3247; Subject Term: ANTENNAS (Electronics); Subject Term: ELECTRONIC apparatus & appliances; Subject Term: RADIATION; Subject Term: ELECTROMAGNETIC pulses; Subject Term: COMPTON effect; Subject Term: ELECTRIC lines; Author-Supplied Keyword: Impulse radiating antennas (IRAs); Author-Supplied Keyword: physical optics; Author-Supplied Keyword: time-domain electromagnetics; Author-Supplied Keyword: ultrawide-band (UWB) antennas; Author-Supplied Keyword: UWB electromagnetics; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 238910 Site Preparation Contractors; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TAP.2005.856322 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18580311&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thors, Björn AU - Steyskal, Hans AU - Holter, Henrik T1 - Broad-Band Fragmented Aperture Phased Array Element Design Using Genetic Algorithms. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2005/10// VL - 53 IS - 10 M3 - Article SP - 3280 EP - 3287 SN - 0018926X AB - In this paper, a synthesis procedure to design thin broad-band fragmented aperture array elements is described. The arrays are assumed to be infinite periodic and the elements consist of a conducting pattern etched on a dielectric backed by a groundplane. A genetic algorithm (GA) is used to design the conducting pattern, relative permittivity, and thickness of the dielectric substrate with respect to array scan and bandwidth performance. The fitness function in the GA is evaluated using a finite-difference time-domain code with periodic boundary conditions. For a substrate thicker than about 0.1 λL (λL = wavelength at the lowest frequency in the frequency band investigated), it was found that a bandwidth of at least one octave can be obtained for arrays scanned within 45° from broadside. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHASED array antennas KW - GENETIC algorithms KW - ANTENNAS (Electronics) KW - FINITE differences KW - WAVELENGTHS KW - DIELECTRICS KW - Broadband antennas KW - finite-difference time-domain (FDTD) KW - genetic algorithm (GA) KW - phased arrays N1 - Accession Number: 18580315; Thors, Björn 1; Email Address: bjorn.thors@ericsson.com Steyskal, Hans 2; Email Address: hans.steyskal@hanscom.af.mil Holter, Henrik 3; Email Address: henrik.holter@dynamics.saab.se; Affiliation: 1: Division of Electromagnetic Theory, Royal Institute of Technology, SE-100 44 Stockholm, Sweden. 2: Air Force Research Laboratory, Hanscom AFB, MA 01730, USA. 3: Saab Bofors Dynamics AB, SE-175 88 Stockholm, Sweden.; Source Info: Oct2005, Vol. 53 Issue 10, p3280; Subject Term: PHASED array antennas; Subject Term: GENETIC algorithms; Subject Term: ANTENNAS (Electronics); Subject Term: FINITE differences; Subject Term: WAVELENGTHS; Subject Term: DIELECTRICS; Author-Supplied Keyword: Broadband antennas; Author-Supplied Keyword: finite-difference time-domain (FDTD); Author-Supplied Keyword: genetic algorithm (GA); Author-Supplied Keyword: phased arrays; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TAP.2005.856340 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18580315&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Samn, Sherwood W. T1 - Modeling Dispersive Dielectric Media in FDTD: A Systematic Approach. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2005/10// VL - 53 IS - 10 M3 - Article SP - 3367 EP - 3373 SN - 0018926X AB - Two popular and distinct methods to model dispersive dielectric media in finite-difference time domain are the piece-wise linear recursive convolution approach and the auxiliary differential equation approach. As they are used to model the same phenomenon and address the same equations, it is reasonable to think there is a close connection between the two. As a result of exploring this connection, we propose a new approach that can be seen as an extension of the two methods and thus, to some extent, serves to unify the two. In addition, the new approach has the advantages of being 1) more systematic—allowing the treatment of different types of dispersive dielectric media in the same manner—and 2) less ad hoc—the so-called recursive accumulators can be identified naturally and automatically. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRICS KW - DIFFERENTIAL equations KW - FINITE differences KW - TIME-domain analysis KW - STORAGE batteries KW - ELECTROMAGNETISM KW - Dispersive dielectrics KW - electromagnetic propagation KW - finite-difference time-domain (FDTD) methods N1 - Accession Number: 18580326; Samn, Sherwood W. 1; Email Address: Sherwood.samn@brooks.af.mil; Affiliation: 1: Air Force Research Laboratory/HEX, San Antonio, TX 78235 USA.; Source Info: Oct2005, Vol. 53 Issue 10, p3367; Subject Term: DIELECTRICS; Subject Term: DIFFERENTIAL equations; Subject Term: FINITE differences; Subject Term: TIME-domain analysis; Subject Term: STORAGE batteries; Subject Term: ELECTROMAGNETISM; Author-Supplied Keyword: Dispersive dielectrics; Author-Supplied Keyword: electromagnetic propagation; Author-Supplied Keyword: finite-difference time-domain (FDTD) methods; NAICS/Industry Codes: 335910 Battery manufacturing; NAICS/Industry Codes: 335911 Storage Battery Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TAP.2005.856318 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18580326&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morath, Christian P. AU - Vaccaro, Kenneth AU - Buchwald, Walter AU - Clark, William R. T1 - Comparator-Based Measurement Scheme for Dark-Count Rates in Single Photon Avalanche Diodes. JO - IEEE Transactions on Instrumentation & Measurement JF - IEEE Transactions on Instrumentation & Measurement Y1 - 2005/10// VL - 54 IS - 5 M3 - Article SP - 2020 EP - 2026 SN - 00189456 AB - III-V single photon avalanche diode (SPAD) sensitivity at wavelengths > 1 μm typically comes at the expense of higher dark-count rates and afterpulsing compared to silicon SPADs. Regarding the measurement of dark-count rates, conventional counters are limited by the deadtime required to quell afterpulsing effects; this led to the adoption of time-correlated single photon counting (TCSPC). In this paper, a new technique for measuring the dark-count rates encountered in III-V SPADs using only a comparator and an averaging oscilloscope is reported. A detailed explanation of the technique is presented along with a semianalytical proof, simulation results comparing the technique's validity in comparison to TCSPC, and example measurements. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Instrumentation & Measurement is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTONS KW - OSCILLOSCOPES KW - ELECTRONIC instruments KW - ENGINEERING instruments KW - INDUSTRIAL electronics KW - ELECTRONICS KW - Dark count rate KW - Geiger-mode KW - photon counting KW - single photon avalanche detector (SPADs). N1 - Accession Number: 18592744; Morath, Christian P. 1; Email Address: christian.morath@hanscom.af.mil Vaccaro, Kenneth 1 Buchwald, Walter 1 Clark, William R. 1; Affiliation: 1: Air Force Research Laboratory, Optoelectronic Technology Branch, Hanscom AFE, MA 01731 USA.; Source Info: Oct2005, Vol. 54 Issue 5, p2020; Subject Term: PHOTONS; Subject Term: OSCILLOSCOPES; Subject Term: ELECTRONIC instruments; Subject Term: ENGINEERING instruments; Subject Term: INDUSTRIAL electronics; Subject Term: ELECTRONICS; Author-Supplied Keyword: Dark count rate; Author-Supplied Keyword: Geiger-mode; Author-Supplied Keyword: photon counting; Author-Supplied Keyword: single photon avalanche detector (SPADs).; NAICS/Industry Codes: 334515 Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 335314 Relay and Industrial Control Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TIM.2005.853347 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18592744&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gunapala, S.D. AU - Bandara, S.V. AU - Liu, J.K. AU - Hill, C.J. AU - Rafol, S.B. AU - Mumolo, J.M. AU - Trinh, J.T. AU - Tidrow, M.Z. AU - LeVan, P.D. T1 - Development of mid-wavelength and long-wavelength megapixel portable QWIP imaging cameras JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2005/10// VL - 47 IS - 1/2 M3 - Article SP - 67 EP - 75 SN - 13504495 AB - Abstract: Mid-wavelength infrared (MWIR) and long-wavelength infrared (LWIR) megapixel quantum well infrared photodetector (QWIP) focal plane arrays have been demonstrated with excellent imaging performance. The MWIR detector array has shown noise equivalent temperature difference (NETD) of 17mK at 95K operating temperature with f/2.5 optics at 300K background and the LWIR detector array has given NETD of 13mK at 70K operating temperature with the same optical and background conditions as the MWIR array. Two portable prototype infrared cameras were fabricated using these two focal planes. The MWIR and the LWIR prototype cameras with similar optics have shown background limited performance (BLIP) at 90K and 70K operating temperatures respectively, at 300K background. In this paper, we will discuss their performance in quantum efficiency, NETD, uniformity, and operability. [Copyright &y& Elsevier] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMAGING systems KW - INFRARED imaging KW - INFRARED technology KW - PHOTOGRAPHIC equipment KW - Infrared imaging camera KW - Long-wavelength infrared KW - Megapixel KW - Mid-wavelength infrared KW - QWIPs N1 - Accession Number: 18286003; Gunapala, S.D. 1; Email Address: sarath.d.gunapala@jpl.nasa.gov Bandara, S.V. 1 Liu, J.K. 1 Hill, C.J. 1 Rafol, S.B. 1 Mumolo, J.M. 1 Trinh, J.T. 1 Tidrow, M.Z. 2 LeVan, P.D. 3; Affiliation: 1: Jet Propulsion Laboratory, California Institute of Technology, Cnt. for Space Micoelectronics Tech., M/S 302-306, 4800 Oak Grove Drive, Pasadena, CA 91109, United States 2: Missile Defense Agency/AS, 7100 Defense Pentagon, Washington, DC 20301, United States 3: Air Force Research Laboratory, Kirtland Air Force Base, NM 87117, United States; Source Info: Oct2005, Vol. 47 Issue 1/2, p67; Subject Term: IMAGING systems; Subject Term: INFRARED imaging; Subject Term: INFRARED technology; Subject Term: PHOTOGRAPHIC equipment; Author-Supplied Keyword: Infrared imaging camera; Author-Supplied Keyword: Long-wavelength infrared; Author-Supplied Keyword: Megapixel; Author-Supplied Keyword: Mid-wavelength infrared; Author-Supplied Keyword: QWIPs; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 443142 Electronics Stores; NAICS/Industry Codes: 443145 Camera and photographic supplies stores; NAICS/Industry Codes: 414430 Photographic equipment and supplies merchant wholesalers; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 423410 Photographic Equipment and Supplies Merchant Wholesalers; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.infrared.2005.02.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18286003&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Colle, Herbert A. AU - Reid, Gary B. T1 - Estimating a Mental Workload Redline in a Simulated Air-to-Ground Combat Mission. JO - International Journal of Aviation Psychology JF - International Journal of Aviation Psychology Y1 - 2005/10// VL - 15 IS - 4 M3 - Article SP - 303 EP - 319 PB - Taylor & Francis Ltd SN - 10508414 AB - Mental workload assessments are used as a component of the test and evaluation of aviation systems. To be acceptable, mental workload should not be excessively high. Conceptually, it should be below a critical redline level. Previous research identified 40 ± 10 as a redline range for the Subjective Workload Assessment Technique (SWAT) primarily based on laboratory task batteries (Reid & Colle, 1988). Using an air-to-ground combat task with an objective performance criterion, we estimated a SWAT redline and found it to be within the original recommended range. We discuss implications and limitations of the approach. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aviation Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES KW - AERONAUTICS KW - AVIATION psychology KW - APPLIED psychology KW - PSYCHOLOGY KW - FLIGHT training N1 - Accession Number: 18598852; Colle, Herbert A. 1; Email Address: collewsu@yahoo.com Reid, Gary B. 2; Affiliation: 1: Department of Psychology, Wright State University 2: Air Force Research Laboratory Wright-Patterson Air Force Base, Ohio; Source Info: 2005, Vol. 15 Issue 4, p303; Subject Term: AIRPLANES; Subject Term: AERONAUTICS; Subject Term: AVIATION psychology; Subject Term: APPLIED psychology; Subject Term: PSYCHOLOGY; Subject Term: FLIGHT training; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 611512 Flight Training; Number of Pages: 17p; Illustrations: 1 Diagram; Document Type: Article L3 - 10.1207/s15327108ijap1504_1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18598852&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hutson, Alisha AU - Nicholas, Ted AU - John, Reji T1 - Fretting fatigue crack analysis in Ti–6Al–4V JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2005/10// VL - 27 IS - 10-12 M3 - Article SP - 1582 EP - 1589 SN - 01421123 AB - Abstract: A study was conducted to verify the efficacy of a fracture mechanics methodology to model the crack growth behavior of fretting fatigue-nucleated cracks obtained under test conditions similar to those found in turbine engine blade attachments. Experiments were performed to produce cracked samples, and fretting fatigue crack propagation lives were calculated for each sample. Cracks were generated at 106 cycles (10%-of-life) under applied stress conditions previously identified as the fretting fatigue limit conditions for a 107 cycle fatigue life. Resulting cracks, ranging in size from 30 to 1200μm, were identified and measured using scanning electron microscopy. Uniaxial fatigue limit stresses were determined experimentally for the fretting fatigue-cracked samples, using a step loading technique, for R=0.5 at 300Hz. Fracture surfaces were inspected to characterize the fretting fatigue crack front indicated by heat tinting. The shape and size of the crack front were then used in calculating ΔKth values for each crack. The resulting uniaxial fatigue limit and ΔKth values compared favorably with the baseline fatigue strength (660MPa) for this material and the ΔKth value (2.9MPa√m) for naturally initiated cracks tested at R=0.5 on a Kitagawa diagram. Crack propagation lives were calculated using stress results of FEM analysis of the contact conditions and a weight function method for determination of ΔK. Resulting lives were compared with the nine million-cycle propagation life that would have been expected in the experiments, if the contact conditions had not been removed. Scatter in the experimental results for fatigue limit stresses and fatigue lives had to be considered as part of an explanation why the fatigue life calculations were unable to match the experiments that were modeled. Analytical life prediction results for the case where propagation life is observed to be very short experimentally were most accurate when using a coefficient of friction, μ=1.0, rather than for the calculations using μ=0.3 [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRACTURE mechanics KW - PENETRATION mechanics KW - STRENGTH of materials KW - DEFORMATIONS (Mechanics) KW - Crack growth KW - Fretting fatigue KW - Stress intensity KW - Titanium N1 - Accession Number: 18951514; Hutson, Alisha 1; Email Address: alisha.hutson@wpafb.af.mil Nicholas, Ted 2 John, Reji 3; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469, USA 2: Air Force Institute of Technology (AFIT/ENY), Wright-Patterson AFB, OH 45433, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/MLLMN), Wright-Patterson AFB, OH 45433, USA; Source Info: Oct2005, Vol. 27 Issue 10-12, p1582; Subject Term: FRACTURE mechanics; Subject Term: PENETRATION mechanics; Subject Term: STRENGTH of materials; Subject Term: DEFORMATIONS (Mechanics); Author-Supplied Keyword: Crack growth; Author-Supplied Keyword: Fretting fatigue; Author-Supplied Keyword: Stress intensity; Author-Supplied Keyword: Titanium; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.ijfatigue.2005.07.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18951514&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morrissey, Ryan J. AU - Nicholas, Theodore T1 - Fatigue strength of Ti–6Al–4V at very long lives JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2005/10// VL - 27 IS - 10-12 M3 - Article SP - 1608 EP - 1612 SN - 01421123 AB - Abstract: The objective of this research was to investigate the fatigue strength of Ti–6Al–4V using an ultrasonic fatigue system. Fatigue testing up to 109 cycles under fully reversed loading was performed to determine the ultra-high cycle fatigue behavior of Ti–6Al–4V. Endurance limit results were compared to similar data generated on conventional servohydraulic test systems and electromagnetic shaker systems to determine if there are any frequency effects. Fatigue specimens were tested with and without cooling air to determine the effects of increased specimen temperature caused by internal damping due to cycling at a very high frequency. An infrared camera was also used to record specimen temperatures at various load levels. Results indicate that the effects of frequency, including internal heating, on the very high cycle fatigue behavior of Ti–6Al–4V are negligible under fully reversed loading conditions. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Fatigue KW - METALLURGY KW - ENGINEERING KW - MECHANICS (Physics) KW - High cycle fatigue KW - Ti–6Al–4V KW - Ultrasonic N1 - Accession Number: 18951517; Morrissey, Ryan J. 1; Email Address: ryan.morrissey@wpafb.af.mil Nicholas, Theodore 2; Affiliation: 1: Air Force Research Laboratory (AFRL/MLLMN), Wright-Patterson AFB, OH, USA 2: Air Force Institute of Technology, Wright-Patterson AFB, OH, USA; Source Info: Oct2005, Vol. 27 Issue 10-12, p1608; Subject Term: METALS -- Fatigue; Subject Term: METALLURGY; Subject Term: ENGINEERING; Subject Term: MECHANICS (Physics); Author-Supplied Keyword: High cycle fatigue; Author-Supplied Keyword: Ti–6Al–4V; Author-Supplied Keyword: Ultrasonic; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.ijfatigue.2005.07.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18951517&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Russ, Stephan M. T1 - Effect of LCF on HCF crack growth of Ti-17 JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2005/10// VL - 27 IS - 10-12 M3 - Article SP - 1628 EP - 1636 SN - 01421123 AB - Abstract: An improved understanding of fatigue crack growth phenomena applicable to titanium engine disks was developed through complimentary experimental and analytical investigations of Ti-17. The effect of low cycle fatigue (LCF) on the high cycle fatigue (HCF) threshold and rate of crack propagation was studied. A simplified variable-amplitude spectrum, consisting of high-R cycles, corresponding to HCF loading, and periodic R=0.1 cycles, corresponding to LCF loading, was used to demonstrate a load-interaction effect. When the ratio of HCF to LCF cycles was 100 or more the fatigue crack growth lifetimes were significantly lower than predicted using linear damage summation methods assuming no load-interaction effect. Thus, it was concluded that the LCF cycle accelerated the fatigue crack growth rate of subsequent HCF cycles, even when closure was concluded to be negligible. A phenomenological model was formulated based on hypothesized changes in the propagation resistance, KPR, and fit to the test data. The model confirmed that the periodic LCF cycles increased fatigue crack growth rates of subsequent HCF cycles. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Fatigue KW - TITANIUM KW - STRAINS & stresses (Mechanics) KW - MECHANICS (Physics) KW - Fatigue crack growth KW - High cycle fatigue KW - Load interaction KW - Low cycle fatigue KW - Titanium KW - Underload KW - Variable amplitude N1 - Accession Number: 18951520; Russ, Stephan M. 1; Email Address: stephan.russ@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, AFRL/MLLMD, 2230 Tenth St, Wright-Patterson AFB, OH 45433, USA; Source Info: Oct2005, Vol. 27 Issue 10-12, p1628; Subject Term: METALS -- Fatigue; Subject Term: TITANIUM; Subject Term: STRAINS & stresses (Mechanics); Subject Term: MECHANICS (Physics); Author-Supplied Keyword: Fatigue crack growth; Author-Supplied Keyword: High cycle fatigue; Author-Supplied Keyword: Load interaction; Author-Supplied Keyword: Low cycle fatigue; Author-Supplied Keyword: Titanium; Author-Supplied Keyword: Underload; Author-Supplied Keyword: Variable amplitude; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijfatigue.2005.07.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18951520&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nicholas, Ted AU - Thompson, Steven R. AU - Porter, William J. AU - Buchanan, Dennis J. T1 - Comparison of fatigue limit strength of Ti–6Al–4V in tension and torsion after real and simulated foreign object damage JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2005/10// VL - 27 IS - 10-12 M3 - Article SP - 1637 EP - 1643 SN - 01421123 AB - Abstract: Flat samples of Ti–6Al–4V forged plate material were subjected to ballistic impact from 3.18mm diameter steel spheres at velocities of 200 or 300m/s and subsequently fatigue tested in either tension or torsion to determine their fatigue limit strength corresponding to 106 cycles. Pendulum and quasi-static indentations were also produced at the same depths as the ballistic indents for comparison. Fatigue notch factors, k f, were compared with FEM computed elastic stress concentration factors, k t, at the appropriate locations where stresses were maximum. Factors contributing to the effect of the ballistic impact and pendulum and quasi-static indents included geometry of notch, residual stresses induced by the indentation procedure, microstructural damage, stress gradients away from notch hot spots, and possible strengthening mechanisms arising from local deformation at and near the impact site. Stress relief annealing was used to isolate the effects of residual stresses in half of the samples. Microstructural analysis was used to identify mechanisms of damage and fatigue initiation sites. Among the major findings, stress relieved specimens were generally found to have higher fatigue strengths than those not relieved, indicating that tensile residual stress fields were produced near the ultimate failure locations during the indenting process. Ballistic impact was found to be more damaging than either quasi-static or pendulum impacts. Finally, stress relieved specimens in several cases showed little or no reduction in fatigue strength, even when local values of k t were substantial, indicating some type of strengthening mechanism developed during indentation. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESIDUAL stresses KW - STRAINS & stresses (Mechanics) KW - DEFORMATIONS (Mechanics) KW - METALS -- Heat treatment KW - Fatigue limit KW - Foreign object damage KW - Impact KW - Residual stress KW - Titanium N1 - Accession Number: 18951521; Nicholas, Ted 1; Email Address: theodore.nicholas@afit.edu Thompson, Steven R. 2 Porter, William J. 3 Buchanan, Dennis J. 3; Affiliation: 1: Air Force Institute of Technology (AFIT/ENY), Wright-Patterson AFB, OH 45433, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA 3: University of Dayton Research Institute, Dayton, OH 45469, USA; Source Info: Oct2005, Vol. 27 Issue 10-12, p1637; Subject Term: RESIDUAL stresses; Subject Term: STRAINS & stresses (Mechanics); Subject Term: DEFORMATIONS (Mechanics); Subject Term: METALS -- Heat treatment; Author-Supplied Keyword: Fatigue limit; Author-Supplied Keyword: Foreign object damage; Author-Supplied Keyword: Impact; Author-Supplied Keyword: Residual stress; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijfatigue.2005.06.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18951521&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Holmes, A.M. AU - Wang, X. AU - Ma, N. AU - Bliss, D.F. AU - Iseler, G.W. T1 - Vertical gradient freezing using submerged heater growth with rotation and with weak magnetic and electric fields JO - International Journal of Heat & Fluid Flow JF - International Journal of Heat & Fluid Flow Y1 - 2005/10// VL - 26 IS - 5 M3 - Article SP - 792 EP - 800 SN - 0142727X AB - Abstract: Investigations for the melt growth gallium-antimonide (GaSb) semiconductor crystals are underway at the US Air Force Research Laboratory at Hanscom Air Force Base by the vertical gradient freeze (VGF) method utilizing a submerged heater. Electromagnetic stirring can be induced in the gallium-antimonide melt just above the crystal growth interface by applying a weak radial electric current in the melt together with a weak axial magnetic field. A force convection in the melt can be induced by rotating the heater. This paper uses a Chebyshev spectral collocation method and investigates the effects of heater rotation and electromagnetic stirring on the melt motion during the VGF process using a submerged heater. Clockwise and counterclockwise rotations of the heater augment and opposes the flow induced by the electromagnetic stirring, respectively. The radial velocity along the crystal–melt interface is proportional to both the strength of the electromagnetic stirring and the clockwise rotation of the heater. A relatively low rotation rate in the clockwise direction significantly increases this radial velocity. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Fluid Flow is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC fields KW - CRYSTAL growth KW - CRYSTAL grain boundaries KW - ELECTRIC currents N1 - Accession Number: 18243486; Holmes, A.M. 1 Wang, X. 1 Ma, N. 1; Email Address: nancy_ma@ncsu.edu Bliss, D.F. 2 Iseler, G.W. 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, North Carolina State University, Campus Box 7910, Rayleigh, NC 27695, USA 2: US Air Force Research Laboratory, Sensors Directorate AFRL/SNHC, 80 Scott Road, Hanscom AFB, MA 01731, USA; Source Info: Oct2005, Vol. 26 Issue 5, p792; Subject Term: MAGNETIC fields; Subject Term: CRYSTAL growth; Subject Term: CRYSTAL grain boundaries; Subject Term: ELECTRIC currents; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijheatfluidflow.2005.02.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18243486&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kenyon, J. A. AU - Griffin, J. H. AU - Kim, N. E. T1 - Sensitivity of Tuned Bladed Disk Response to Frequency Veering. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2005/10// VL - 127 IS - 4 M3 - Article SP - 835 EP - 842 SN - 07424795 AB - A continuous method is presented for representing the mode interaction that occurs in frequency veering in terms of the nominal sector modes of a cyclic symmetric bladed disk model constrained at a reference interblade phase angle. Using this method, the effect of frequency veering on the mode shapes can be considered in the context of the generalized forces exciting the system and the modal response of the bladed disk. It is shown that in a blade-dominated family of modes, the transfer of modal energy to the disk in the veering results in a lower generalized force exciting the mode as well as reduced response amplitude in the blade. For the disk-dominated modes, the sharing of modal energy with the blades can lead to the disk being excited by aerodynamic loading. These effects can have important implications for predicting and interpreting forced response in bladed disks. Numerical examples are provided to illustrate these concepts. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering for Gas Turbines & Power is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BLADES (Hydraulic machinery) KW - ROTATING disks KW - FORCE & energy KW - AERODYNAMICS KW - FLUID dynamics N1 - Accession Number: 18863377; Kenyon, J. A. 1; Email Address: james.kenyon@wpafb.af.mil Griffin, J. H. 2; Email Address: jg9h@Andrew.cmu.edu Kim, N. E. 3; Email Address: nek@hoodtach.com; Affiliation: 1: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, OH 45433 2: Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213 3: Hood Technologies, Hood River, OR 97031; Source Info: Oct2005, Vol. 127 Issue 4, p835; Subject Term: BLADES (Hydraulic machinery); Subject Term: ROTATING disks; Subject Term: FORCE & energy; Subject Term: AERODYNAMICS; Subject Term: FLUID dynamics; Number of Pages: 8p; Illustrations: 2 Diagrams, 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1115/1.1924486 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18863377&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hall, Richard B. T1 - A Thermodynamic Framework for Viscoplasticity Based on Overstress (VBO). JO - Journal of Engineering Materials & Technology JF - Journal of Engineering Materials & Technology Y1 - 2005/10// VL - 127 IS - 4 M3 - Article SP - 369 EP - 373 SN - 00944289 AB - A thermodynamic framework is presented for the theory of Viscoplasticity Based on Overstress (VBO) developed by Krempl and co-workers (Krempl, E., and Ho, K., 2001, in Lemaitre Handbook of Materials Behavior Models, Academic Press, New York, pp. 336- 348; 2000, in Time Dependent and Nonlinear Effects in Polymers and composites, ASTM STP 1357, Schapery, R. A., and Sun, C. T, eds., ASTM, West Conshohocken, PA, pp. 118-13 7; Cernocky, E. P., and Krempl, E., 1979, mt. J. Non-Linear Mccl,., 14, pp. 183-203; Gomaa et at., 2004, Int. J. Solids Struct., 41, pp. 3607-3624), for anisotropic materials and small deformations. A Caratheodory-based approach is applied to demonstrate the existence of entropy and absolute temperature, as previously described by Hall (2000, Gompos. Sci. Technol., 60, pp. 2581-2599). The present framework indicates that the stress rate-dependent term in the established growth law for the equilibrium stress cannot contribute to the dissipation, and is therefore referred to here as the elastic equilibrium stress rate. A new temperature rate-dependent term is obtained for the same growth law, which is also required to be dissipationless. These terms are therefore identified with dissipationless changes of the stored energy and/or entropy. In general, the traditional, and thermodynamically justified, forms for the potential functions that arise in the present nonequilibrium treatment lead to dissipationless contributions from internal variable growth law terms that are linear in the rates of the controllable variables. Similar indications, without first establishing entropy and absolute temperature existence, were noted in the modeling of Lehmann (1984, in The Constitutive Law in Thermoplasticity, T Lehmann, ed., Springer New York). [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering Materials & Technology is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMODYNAMICS KW - VISCOPLASTICITY KW - PLASTICITY KW - PHYSICAL & theoretical chemistry KW - DYNAMICS KW - VISCOSITY KW - Caratheodory KW - Dissipation KW - Entropy KW - VBO KW - Viscoplasticity N1 - Accession Number: 18794601; Hall, Richard B. 1; Email Address: richard.hall@wpafb.af.mil; Affiliation: 1: Member, Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLBC, 2941 Hobson Way, rm 136, Wright-Patterson AFB, OH 45433-7750.; Source Info: Oct2005, Vol. 127 Issue 4, p369; Subject Term: THERMODYNAMICS; Subject Term: VISCOPLASTICITY; Subject Term: PLASTICITY; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: DYNAMICS; Subject Term: VISCOSITY; Author-Supplied Keyword: Caratheodory; Author-Supplied Keyword: Dissipation; Author-Supplied Keyword: Entropy; Author-Supplied Keyword: VBO; Author-Supplied Keyword: Viscoplasticity; Number of Pages: 5p; Document Type: Article L3 - 10.1115/1.1924562 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18794601&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eapen, Kalathil C. AU - Patton, Steven T. AU - Smaliwood, Steven A. AU - Phillips, Benjamin S. AU - Zabinski, Jeffrey S. T1 - MEMS Lubricants Based on Bound and Mobile Phases of Hydrocarbon Compounds: Film Deposition and Performance Evaluation. JO - Journal of Microelectromechanical Systems JF - Journal of Microelectromechanical Systems Y1 - 2005/10// VL - 14 IS - 5 M3 - Article SP - 954 EP - 960 SN - 10577157 AB - The concept of a thin layer of mobile hydrocarbon-based lubricant providing protection by replenishment to a surface already protected by a chemically bound material has been explored for the first time, for application to silicon-based microelectromechanical (MEMS) systems. Several bound/mobile pairs of lubricants were evaluated to study the effects of bound phase end group and mobile phase chemical functionality on wettability and performance. The bound species studied were derived from 1-decanol and 1,7-heptanediol. Mobile phases investigated were, a pentaerythritol ester, a multiply alkylated cyclopentane, Pennzane, and a polysilane developed for spacecraft application. Hydrocarbon lubricant performance was evaluated using electrostatic motors run in dry air, and was compared with that provided by Fomblin Zdol under identical conditions. Motors with hydrocarbon coatings showed substantial improvement in performance over uncoated motors, and for some bound/mobile pairs, was equal to Zdol within experimental error. We believe that for silicon-based devices, hydrocarbon coatings will be preferable at least for some applications, as the degradation observed due to aging of a fluorinated lubricant in direct contact with a silicon surface is absent. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microelectromechanical Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTROMECHANICAL systems KW - COATING processes KW - SURFACES (Technology) KW - THIN films KW - SILICON KW - SYNTHETIC lubricants KW - Hydrocarbons KW - lubrication KW - MEMS KW - replenishment N1 - Accession Number: 18631479; Eapen, Kalathil C. 1; Email Address: kalathil.eapen@wpafb.af.mil Patton, Steven T. 1 Smaliwood, Steven A. 2 Phillips, Benjamin S. 2 Zabinski, Jeffrey S. 3; Email Address: Jeffery.zabinski@wpatb.af.mil; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469 USA. 2: Universal Technology Corporation, Dayton, OH 45432 USA. 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Wright-Patterson AFB, OH 45433 USA.; Source Info: Oct2005, Vol. 14 Issue 5, p954; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: COATING processes; Subject Term: SURFACES (Technology); Subject Term: THIN films; Subject Term: SILICON; Subject Term: SYNTHETIC lubricants; Author-Supplied Keyword: Hydrocarbons; Author-Supplied Keyword: lubrication; Author-Supplied Keyword: MEMS; Author-Supplied Keyword: replenishment; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1109/JMEMS.2005.851806 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18631479&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boakye, E. E. AU - Mogilevsky, P. AU - Hay, R. S. T1 - Synthesis of Nanosized Spherical Rhabdophane Particles. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2005/10// VL - 88 IS - 10 M3 - Article SP - 2740 EP - 2746 PB - Wiley-Blackwell SN - 00027820 AB - Spherical 10 nm rhabdophane (LaPO4·H2O) particles were made by controlled precipitation in water using lanthanum citrate chelate and phosphoric acid (La-Cit+/H3PO4) at a temperature of 30°C. Rod-shaped 10 nm × 100 nm rhabdophane particles were made by direct precipitation from lanthanum nitrate and phosphoric acid (La(NO3)3/H3PO4). The lanthanum nitrate to phosphoric acid molar ratios (La:P) were fixed at 1:1 and 1:5 for both methods to study their effect on particle size and shape. The particles were characterized with DTA/TGA, XRD, TEM, SEM, Fourier Transform infrared spectroscopy, and ζ potential measurements. The spherical particle surfaces had absorbed citric acid. The point of zero charge of the rod-shaped and spherical particles was pH 5.4 and 4.3, respectively. Formation mechanisms for the spherical particles are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONAZITE KW - LANTHANUM KW - PHOSPHATE minerals KW - THORIUM ores KW - PHOSPHATES KW - BASTNAESITE KW - CARBONATES N1 - Accession Number: 18221016; Boakye, E. E. 1; Email Address: emmanuel.boakye@pafb.af.mil Mogilevsky, P. 1 Hay, R. S. 2; Affiliation: 1: UES Inc., Dayton, Ohio 45432 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433; Source Info: Oct2005, Vol. 88 Issue 10, p2740; Subject Term: MONAZITE; Subject Term: LANTHANUM; Subject Term: PHOSPHATE minerals; Subject Term: THORIUM ores; Subject Term: PHOSPHATES; Subject Term: BASTNAESITE; Subject Term: CARBONATES; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 7p; Document Type: Article L3 - 10.1111/j.1551-2916.2005.00525.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18221016&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Evans, D.R. AU - Carns, J.L. AU - Basun, S.A. AU - Saleh, M.A. AU - Cook, G. T1 - Understanding and eliminating photovoltaic induced instabilities in contra-directional two-beam coupling in photorefractive LiNbO3:Fe JO - Optical Materials JF - Optical Materials Y1 - 2005/10// VL - 27 IS - 11 M3 - Article SP - 1730 EP - 1732 SN - 09253467 AB - Abstract: In contra-directional two-beam coupling using photorefractive reflection gratings in LiNbO3:Fe, noise is observed in the form of quasi-periodic temporal instabilities. These instabilities result from different mechanisms that affect the magnitude of the space-charge field, and are attributed to the strong photovoltaic field generated in LiNbO3:Fe. A method of coating the z-surfaces of the crystal with a semi-transparent conductive coating eliminates these instabilities. [Copyright &y& Elsevier] AB - Copyright of Optical Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOREFRACTIVE materials KW - ELECTRIC charge & distribution KW - LITHIUM KW - IRON KW - 72.40.+w KW - LiNbO3:Fe KW - Photorefractive KW - Photovoltaic KW - Photovoltaic noise KW - Quasi-breakdown KW - Space-charge field KW - Two-beam coupling N1 - Accession Number: 18233920; Evans, D.R. 1; Email Address: dean.evans@wpafb.af.mil Carns, J.L. 1,2 Basun, S.A. 3 Saleh, M.A. 1,4 Cook, G. 1,5; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: Anteon Corporation, 5100 Springfield Pike Suite 509, Dayton, OH 45431, USA 3: A.F. Ioffe Physico-Technical Institute, Polytechnicheskaya 26 194021, St. Petersburg, Russia 4: UES, Inc. 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 5: Universal Technology Corporation, 1270 N. Fairfield Road, Dayton, OH 45432, USA; Source Info: Oct2005, Vol. 27 Issue 11, p1730; Subject Term: PHOTOREFRACTIVE materials; Subject Term: ELECTRIC charge & distribution; Subject Term: LITHIUM; Subject Term: IRON; Author-Supplied Keyword: 72.40.+w; Author-Supplied Keyword: LiNbO3:Fe; Author-Supplied Keyword: Photorefractive; Author-Supplied Keyword: Photovoltaic; Author-Supplied Keyword: Photovoltaic noise; Author-Supplied Keyword: Quasi-breakdown; Author-Supplied Keyword: Space-charge field; Author-Supplied Keyword: Two-beam coupling; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.optmat.2004.11.043 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18233920&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, Martin L. T1 - Arguing About War. JO - Political Theology JF - Political Theology Y1 - 2005/10// VL - 6 IS - 4 M3 - Book Review SP - 503 EP - 505 PB - Taylor & Francis Ltd SN - 1462317X AB - Reviews the book "Arguing About War," by Michael Walzer. KW - WAR KW - NONFICTION KW - WALZER, Michael KW - ARGUING About War (Book) N1 - Accession Number: 18665358; Cook, Martin L. 1; Email Address: martin.cook@usafa.af.mil; Affiliation: 1: United States Air Force Academy; Source Info: Oct2005, Vol. 6 Issue 4, p503; Subject Term: WAR; Subject Term: NONFICTION; Reviews & Products: ARGUING About War (Book); People: WALZER, Michael; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18665358&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gursul, I. AU - Gordnier, R. AU - Visbal, M. T1 - Unsteady aerodynamics of nonslender delta wings JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences Y1 - 2005/10// VL - 41 IS - 7 M3 - Article SP - 515 EP - 557 SN - 03760421 AB - Abstract: Unsteady aerodynamics of nonslender delta wings, covering topics of shear layer instabilities, structure of nonslender vortices, breakdown, maneuvering wings, and fluid/structure interactions, are reviewed in this paper. Vortical flows develop at very low angles of attack, and form close to the wing surface. This results in strong interactions with the upper-surface boundary layer and in a pronounced dependence of the flow structure on Reynolds number. Vortex breakdown is observed to be much less abrupt compared to breakdown over slender wings. This results in challenges for the precise determination of vortex breakdown location and the interpretation of flow visualizations. One of the distinct features of nonslender wings is the location of the primary attachment zone outboard of the symmetry plane. Reattachment location correlates with the wing stall process and increased buffeting. Dramatic fluid/structure interactions emerge with increasing wing flexibility and result in substantial lift enhancement in the post-stall region. This recently discovered phenomenon appears to be a feature of nonslender wings. Rigid delta wings undergoing small amplitude oscillations in the post-stall region exhibit many similarities to flexible wings, including reattachment and re-formation of the leading-edge vortices. Unusual self-excited roll oscillations have also been observed for free-to-roll nonslender wings. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - WIND tunnels KW - FLUID dynamics KW - BOUNDARY layer (Meteorology) N1 - Accession Number: 19304999; Gursul, I. 1; Email Address: i.a.gursul@bath.ac.uk Gordnier, R. 2 Visbal, M. 2; Affiliation: 1: University of Bath, Department of Mechanical Engineering, Bath, BA2 7AY, UK 2: Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA; Source Info: Oct2005, Vol. 41 Issue 7, p515; Subject Term: AERODYNAMICS; Subject Term: WIND tunnels; Subject Term: FLUID dynamics; Subject Term: BOUNDARY layer (Meteorology); Number of Pages: 43p; Document Type: Article L3 - 10.1016/j.paerosci.2005.09.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19304999&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mass, J. AU - Avella, M. AU - Jiménez, J. AU - Callahan, M. AU - Grant, E. AU - Rakes, K. AU - Bliss, D. AU - Wang, Buguo T1 - Cathodoluminescence characterization of hydrothermal ZnO crystals JO - Superlattices & Microstructures JF - Superlattices & Microstructures Y1 - 2005/10// VL - 38 IS - 4-6 M3 - Article SP - 223 EP - 230 SN - 07496036 AB - Abstract: Hydrothermal ZnO crystals were grown using 3N NaOH, 1N KOH and 0.5N Li2CO3 alkali solvents. The crystals have been studied by means of cathodoluminescence (CL), revealing high crystalline quality. The different growth sectors are identified by CL imaging. The incorporation of impurities and non-radiative recombination centers depends on the growth sector. The surface introduces band tailing producing self-absorption of the high energy luminescence photons. The broad visible luminescence band is composed of at least three different bands, green, orange and red, which are non-equally distributed, depending on the growth sector. Also a strong dependence of the visible luminescence on the penetration depth of the excitation — the beam — is observed, which suggests that the concentration of the deep levels responsible for the visible luminescence is at the sample surface to a depth of 2 μm. [Copyright &y& Elsevier] AB - Copyright of Superlattices & Microstructures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CATHODOLUMINESCENCE KW - ZINC oxide KW - PHOTONS KW - LUMINESCENCE N1 - Accession Number: 19045860; Mass, J. 1,2 Avella, M. 1 Jiménez, J. 1; Email Address: jimenez@fmc.uva.es Callahan, M. 3 Grant, E. 3 Rakes, K. 3 Bliss, D. 3 Wang, Buguo 4; Affiliation: 1: Física de la Materia Condensada, ETSII, 47011 Valladolid, Spain 2: Dpto. Matemáticas y Física, UniNorte, Km 5 Barranquilla, Colombia 3: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA 01731, USA 4: Solid State Scientific Corporation, Hollis, NH 03049, USA; Source Info: Oct2005, Vol. 38 Issue 4-6, p223; Subject Term: CATHODOLUMINESCENCE; Subject Term: ZINC oxide; Subject Term: PHOTONS; Subject Term: LUMINESCENCE; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.spmi.2005.08.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19045860&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hussain, S.M. AU - Hess, K.L. AU - Gearhart, J.M. AU - Geiss, K.T. AU - Schlager, J.J. T1 - In vitro toxicity of nanoparticles in BRL 3A rat liver cells JO - Toxicology in Vitro JF - Toxicology in Vitro Y1 - 2005/10// VL - 19 IS - 7 M3 - Article SP - 975 EP - 983 SN - 08872333 AB - Abstract: This study was undertaken to address the current deficient knowledge of cellular response to nanosized particle exposure. The study evaluated the acute toxic effects of metal/metal oxide nanoparticles proposed for future use in industrial production methods using the in vitro rat liver derived cell line (BRL 3A). Different sizes of nanoparticles such as silver (Ag; 15, 100nm), molybdenum (MoO3; 30, 150nm), aluminum (Al; 30, 103nm), iron oxide (Fe3O4; 30, 47nm), and titanium dioxide (TiO2; 40nm) were evaluated for their potential toxicity. We also assessed the toxicity of relatively larger particles of cadmium oxide (CdO; 1μm), manganese oxide (MnO2; 1–2μm), and tungsten (W; 27μm), to compare the cellular toxic responses with respect to the different sizes of nanoparticles with different core chemical compositions. For toxicity evaluations, cellular morphology, mitochondrial function (MTT assay), membrane leakage of lactate dehydrogenase (LDH assay), reduced glutathione (GSH) levels, reactive oxygen species (ROS), and mitochondrial membrane potential (MMP) were assessed under control and exposed conditions (24h of exposure). Results showed that mitochondrial function decreased significantly in cells exposed to Ag nanoparticles at 5–50μg/ml. However, Fe3O4, Al, MoO3 and TiO2 had no measurable effect at lower doses (10–50μg/ml), while there was a significant effect at higher levels (100–250μg/ml). LDH leakage significantly increased in cells exposed to Ag nanoparticles (10–50μg/ml), while the other nanoparticles tested displayed LDH leakage only at higher doses (100–250μg/ml). In summary the Ag was highly toxic whereas, MoO3 moderately toxic and Fe3O4, Al, MnO2 and W displayed less or no toxicity at the doses tested. The microscopic studies demonstrated that nanoparticle-exposed cells at higher doses became abnormal in size, displaying cellular shrinkage, and an acquisition of an irregular shape. Due to toxicity of silver, further study conducted with reference to its oxidative stress. The results exhibited significant depletion of GSH level, reduced mitochondrial membrane potential and increase in ROS levels, which suggested that cytotoxicity of Ag (15, 100nm) in liver cells is likely to be mediated through oxidative stress. [Copyright &y& Elsevier] AB - Copyright of Toxicology in Vitro is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC oxides KW - NANOPARTICLES KW - MANGANESE oxides KW - TUNGSTEN KW - CELL morphology KW - LACTATE dehydrogenase KW - GLUTATHIONE KW - In vitro toxicity KW - Nanoparticles KW - Oxidative stress N1 - Accession Number: 19496193; Hussain, S.M. 1; Email Address: saber.hussain@wpafb.af.mil Hess, K.L. 2 Gearhart, J.M. 3 Geiss, K.T. 4 Schlager, J.J. 1; Affiliation: 1: Applied Biotechnology, Air Force Research Laboratory/HEPB, Wright-Patterson AFB, OH, USA 2: Geo-Centers, Inc., Wright-Patterson AFB, OH, USA 3: Alion Science & Technology, Wright-Patterson AFB, P.O. Box 31009, Dayton, OH 45431-0009, USA 4: Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Oct2005, Vol. 19 Issue 7, p975; Subject Term: METALLIC oxides; Subject Term: NANOPARTICLES; Subject Term: MANGANESE oxides; Subject Term: TUNGSTEN; Subject Term: CELL morphology; Subject Term: LACTATE dehydrogenase; Subject Term: GLUTATHIONE; Author-Supplied Keyword: In vitro toxicity; Author-Supplied Keyword: Nanoparticles; Author-Supplied Keyword: Oxidative stress; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.tiv.2005.06.034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19496193&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Delcomyn, Carrie A. AU - MacLean, H. Scott AU - Henley, Michael V. AU - Renard, Jean J. T1 - Determination of in situ-generated dimethyldioxirane from an aqueous matrix using selected ion monitoring JO - Journal of Chromatography A JF - Journal of Chromatography A Y1 - 2005/09/30/ VL - 1089 IS - 1/2 M3 - Article SP - 211 EP - 218 SN - 00219673 AB - Abstract: There is a growing interest in utilizing in situ-generated dimethyldioxirane (DMDO) as an oxidant for synthetic purposes and bleaching and decontamination applications, but the ability to quantify the organic cyclic peroxide species is often complicated by the presence of other reactive components, peroxymonosulfate and acetone, within the solution matrix. This paper is the first to report the use of a MS method for the quantitation of DMDO from these complex matrices by utilizing an isothermal 30°C GC program in conjunction with selected ion monitoring (SIM). The volatile organic species is sampled from the headspace of closed batch system vials and quantified by measuring the abundance of m/z 74. The method achieves a practical quantitation limit (PQL) for DMDO of 0.033mM, and methyl acetate is identified as a minor decomposition product from the aqueous sample matrix, contributing 9% towards the overall DMDO measurements. The spectroscopic method makes use of common analytical instrumentation and is capable of measuring other in situ-generated dioxiranes, such as those generated from 2-butanone and [2H6]acetone. [Copyright &y& Elsevier] AB - Copyright of Journal of Chromatography A is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACETONE KW - DYES & dyeing KW - PROGRAMMING languages (Electronic computers) KW - TECHNICAL chemistry KW - METHYL ethyl ketone KW - Dimethyldioxirane KW - Dioxiranes KW - Headspace sampling KW - In situ KW - Methyl acetate KW - Oxidant KW - Quantitation KW - Selected ion monitoring (SIM) N1 - Accession Number: 18162492; Delcomyn, Carrie A. 1; Email Address: carrie.delcomyn.ctr@tyndall.af.mil MacLean, H. Scott 1 Henley, Michael V. 2 Renard, Jean J. 1; Affiliation: 1: Applied Research Associates Inc., Air Force Research Laboratory, 139 Barnes Drive, Tyndall AFB, FL 32403, USA 2: Air Force Research Laboratory, Materials & Manufacturing Directorate, 139 Barnes Drive, Tyndall Air Force Base, FL 32403, USA; Source Info: Sep2005, Vol. 1089 Issue 1/2, p211; Subject Term: ACETONE; Subject Term: DYES & dyeing; Subject Term: PROGRAMMING languages (Electronic computers); Subject Term: TECHNICAL chemistry; Subject Term: METHYL ethyl ketone; Author-Supplied Keyword: Dimethyldioxirane; Author-Supplied Keyword: Dioxiranes; Author-Supplied Keyword: Headspace sampling; Author-Supplied Keyword: In situ; Author-Supplied Keyword: Methyl acetate; Author-Supplied Keyword: Oxidant; Author-Supplied Keyword: Quantitation; Author-Supplied Keyword: Selected ion monitoring (SIM); NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325130 Synthetic Dye and Pigment Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 511210 Software Publishers; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.chroma.2005.06.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18162492&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Drummy AU - L. F. AU - Koerner AU - H. AU - Farmer AU - K. AU - Tan AU - A. AU - B. L. AU - Vaia AU - R. A. T1 - High-Resolution Electron Microscopy of Montmorillonite and Montmorillonite/Epoxy Nanocomposites. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2005/09/29/ VL - 109 IS - 38 M3 - Article SP - 17868 EP - 17878 SN - 15206106 AB - With the use of high-resolution transmission electron microscopy the structure and morphology of montmorillonite (MMT), a material of current interest for use in polymer nanocomposites, was characterized. Using both imaging theory and experiment, the procedures needed to generate lattice images from MMT were established. These procedures involve careful control of the microscope's objective lens defocus to maximize contrast from features of a certain size, as well as limiting the total dose of electrons received by the sample. Direct images of the MMT lattice were obtained from neat Na+ MMT, organically modified MMT, and organically modified MMT/epoxy nanocomposites. The degree of crystallinity and turbostratic disorder were characterized using electron diffraction and high-resolution electron microscopy (HREM). Also, the extent of the MMT sheets to bend when processed into an epoxy matrix was directly visualized. A minimum radius of curvature tolerable for a single MMT sheet during bending deformation was estimated to be 15 nm, and from this value a critical failure strain of 0.033 was calculated. HREM can be used to improve the understanding of the structure of polymer nanocomposites at the nanometer-length scale. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - TRANSMISSION electron microscopy KW - CATHODE rays KW - OPTICS N1 - Accession Number: 20705053; Drummy L. F. 1 Koerner H. 1 Farmer K. 1 Tan A. 1 B. L. 1 Vaia R. A. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Ohio 45433; Source Info: Sep2005, Vol. 109 Issue 38, p17868; Subject Term: POLYMERS; Subject Term: TRANSMISSION electron microscopy; Subject Term: CATHODE rays; Subject Term: OPTICS; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20705053&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schwartz AU - M. AU - Duan AU - D. AU - Berry AU - R. J. T1 - Molecular Dynamics Study of Anisotropic Translational and Rotational Diffusion in Liquid Benzene. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2005/09/27/ VL - 109 IS - 38 M3 - Article SP - 8637 EP - 8641 SN - 10895639 AB - Equilibrium NPT and NVT molecular dynamics simulations were performed on liquid benzene over an extended range of temperature (from 260 to 360 K) using the COMPASS force field. Densities and enthalpies of vaporization (from cohesive energy densities) were within 1% of experiment at all temperatures. tumbling and spinning rotational diffusion coefficients, D⊥ and D∥, computed as a function of temperature, agreed qualitatively with the results of earlier reported experimental and computational investigations. Generally, it was found that D∥/D⊥ ≈ 1.4−2.5 and the activation energy for tumbling was significantly greater than for spinning about the C6 axis [Ea(D⊥) = 8.1 kJ mol-1 and Ea(D∥) = 4.5 kJ mol-1]. Calculated translational diffusion coefficients were found to be in quantitative agreement with experimental values at all temperatures [deviations were less than the scatter between different reported measurements]. In addition, translational diffusion coefficients were computed in the molecule-fixed frame to yield values for Dxy (diffusion in the plane of the molecule) and Dz (diffusion perpendicular to the plane). It was found that the ratio Dxy/Dz ≈ 2.0, and that the two coefficients have roughly equal activation energies. This represents the first atomistic molecular dynamics study of translational diffusion in the molecular frame. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR dynamics KW - MATTER -- Properties KW - SEMICONDUCTOR doping KW - SOLUTION (Chemistry) N1 - Accession Number: 20704453; Schwartz M. 1 Duan D. 1 Berry R. J. 1; Affiliation: 1: Department of Chemistry, University of North Texas, Denton, Texas 76203-507, and Air Force Research Laboratory Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433; Source Info: Sep2005, Vol. 109 Issue 38, p8637; Subject Term: MOLECULAR dynamics; Subject Term: MATTER -- Properties; Subject Term: SEMICONDUCTOR doping; Subject Term: SOLUTION (Chemistry); Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20704453&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bieler, Tom AU - Goetz, R.L. AU - Semiatin, S.L. T1 - Anisotropic plasticity and cavity growth during upset forging of Ti–6Al–4V JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2005/09/25/ VL - 405 IS - 1/2 M3 - Article SP - 201 EP - 213 SN - 09215093 AB - Abstract: Orientation imaging microscopy was used to determine the effect of local crystallographic texture on the nucleation and growth of cavities in Ti–6Al–4V with a colony-α microstructure during upset forging to a 35% height reduction at 815°C and a strain rate of 0.1s−1. In contrast to uniaxial deformation, the stress–strain history in the bulged equatorial region was complex. Cavities developed preferentially along prior-β grain boundaries nominally perpendicular to principal stress directions, particularly where there were 90° colony misorientations, even in regions where global secondary-tension stresses were small or even negative. High cavity nucleation and growth rates were strongly correlated with the 90°-misoriented colonies, regardless of the orientations of the adjacent colonies. A rationale was developed to account for the particular sensitivity of 90°-misorientations based on colony orientation, slip systems, Taylor and Schmid factors, strain ratio and deformation history. Colonies with orientations in which prism slip was highly favored were stable and exhibited strong plastic anisotropy. When a neighboring colony had a 90°-misorientation, highly non-uniform strains developed in the boundary region, resulting in large triaxial stress concentrations that facilitated cavity nucleation and plastic strain conditions that favored cavity growth. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASTICITY KW - FORGING KW - METALWORK KW - TITANIUM KW - Cavitation KW - Finite element KW - Forging KW - Mesotexture KW - Plastic anisotropy KW - Ti–6Al–4V N1 - Accession Number: 18262873; Bieler, Tom 1; Email Address: bieler@egr.msu.edu Goetz, R.L. 2 Semiatin, S.L. 2; Affiliation: 1: Department of Chemical Engineering and Materials Science, Michigan State University, 2527 Engineering Building, East Lansing, MI 48824, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright Patterson AFB, OH 45433, USA; Source Info: Sep2005, Vol. 405 Issue 1/2, p201; Subject Term: PLASTICITY; Subject Term: FORGING; Subject Term: METALWORK; Subject Term: TITANIUM; Author-Supplied Keyword: Cavitation; Author-Supplied Keyword: Finite element; Author-Supplied Keyword: Forging; Author-Supplied Keyword: Mesotexture; Author-Supplied Keyword: Plastic anisotropy; Author-Supplied Keyword: Ti–6Al–4V; NAICS/Industry Codes: 332112 Nonferrous Forging; NAICS/Industry Codes: 332113 Forging; NAICS/Industry Codes: 332111 Iron and Steel Forging; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.msea.2005.05.064 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18262873&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ivasishin, O.M. AU - Markovsky, P.E. AU - Semiatin, S.L. AU - Ward, C.H. T1 - Aging response of coarse- and fine-grained β titanium alloys JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2005/09/25/ VL - 405 IS - 1/2 M3 - Article SP - 296 EP - 305 SN - 09215093 AB - Abstract: The effect of heating rate to aging temperature and β grain size on the aging behavior of three metastable β titanium alloys, TIMETAL-LCB, VT22 and Ti-15-3-3-3 (‘Ti-15-3’), was established using in situ resistivity measurements, X-ray diffraction, optical microscopy, SEM, TEM and STEM characterization. The results revealed the alloys could be divided into two classes based on their aging behavior. TIMETAL-LCB and VT-22 formed fine plate-like α at slow heating rates to the aging temperature. This behavior was determined to be due to the precipitation of isothermal ω at low temperatures, which serves as nucleation sites for α. The slow heating rate yielded the best balance of strength and ductility, particularly in alloys with a fine (∼10μm) β grain size. At high heating rates, the formation of isothermal ω was avoided, leading to coarse, plate-like α microstructures with less desirable properties. Ti-15-3, on the other hand, exhibited β phase separation during isothermal aging rather than isothermal ω formation. Much slower cooling rates were required to form fine α laths in Ti-15-3 compared to the other two alloys. The importance of specifying heating rate and aging temperature for the industrial heat treatment of β titanium alloys was thus established. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - HEATING KW - ALLOYS KW - METALS KW - Aging KW - Beta titanium alloys KW - Continuous heat treatment N1 - Accession Number: 18262884; Ivasishin, O.M. 1; Email Address: ivas@imp.kiev.ua Markovsky, P.E. 1 Semiatin, S.L. 2 Ward, C.H. 2; Affiliation: 1: G.V.Kurdyumov Institute for Metal Physics, National Academy of Sciences, 03142 Kyiv, Ukraine 2: Air Force Research Laboratory, AFRL/ML, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Sep2005, Vol. 405 Issue 1/2, p296; Subject Term: TITANIUM alloys; Subject Term: HEATING; Subject Term: ALLOYS; Subject Term: METALS; Author-Supplied Keyword: Aging; Author-Supplied Keyword: Beta titanium alloys; Author-Supplied Keyword: Continuous heat treatment; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.msea.2005.06.027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18262884&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Padmawar, Prashant A. AU - Canteenwala, Taizoon AU - Verma, Sarika AU - Tan, Loon-Seng AU - He, Guang S. AU - Prasad, Paras N. AU - Chiang, Long Y. T1 - Synthesis of C60-diphenylaminofluorene dyads with two-photon absorbing characteristics JO - Synthetic Metals JF - Synthetic Metals Y1 - 2005/09/22/ VL - 154 IS - 1-3 M3 - Article SP - 185 EP - 188 SN - 03796779 AB - Abstract: Linear A-sp 3 -D molecular conjugates as 9,9-dialkyl-2-diphenylaminofluorene (DPAF-C,)-C60 monoadducts were demonstrated using methanoketo unit as a linker to bridge the DPAF donor moiety and the fullerene acceptor chromophore together within a short distance of roughly 2.0Å. Target products of C60-diphenylaminofluorene dyads C60(>DPAF-C2) and C60(>DPAF-C18) were synthesized using Bingel cycloproanation reaction from the corresponding 7-α-bromoacetyl-9,9-dialkyl-2-diphenylaminofluorene precursors. Both dyads C60(>DPAF-C2) and C60(>DPAF-C18) were characterized by spectroscopic methods and simultaneous two-photon excitation measurements, showing large two-photon absorption cross-sections in the nanosecond regime. [Copyright &y& Elsevier] AB - Copyright of Synthetic Metals is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSORPTION KW - PHOTONS KW - FLUORENE KW - CYCLOPROPANE KW - Diphenylaminofluorene KW - Donor-acceptor conjugate KW - Fullerene derivative KW - Photonic organics KW - Two-photon absorption N1 - Accession Number: 18284356; Padmawar, Prashant A. 1 Canteenwala, Taizoon 1 Verma, Sarika 1 Tan, Loon-Seng 2 He, Guang S. 3 Prasad, Paras N. 3 Chiang, Long Y. 1; Email Address: long_chiang@uml.edu; Affiliation: 1: Department of Chemistry, Institute of Nanoscience and Engineering, Technology, University of Massachusetts, Lowell, MA 01854, USA 2: Polymer Branch, AFRL/MLBP, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA 3: Institute for Lasers, Photonics and Biophotonics, and Department of Chemistry, State University of New York, Buffalo, NY 14260, USA; Source Info: Sep2005, Vol. 154 Issue 1-3, p185; Subject Term: ABSORPTION; Subject Term: PHOTONS; Subject Term: FLUORENE; Subject Term: CYCLOPROPANE; Author-Supplied Keyword: Diphenylaminofluorene; Author-Supplied Keyword: Donor-acceptor conjugate; Author-Supplied Keyword: Fullerene derivative; Author-Supplied Keyword: Photonic organics; Author-Supplied Keyword: Two-photon absorption; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.synthmet.2005.07.047 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18284356&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, Lingchun AU - Yang, Junbing AU - Vaia, Richard AU - Dai, Liming T1 - Multicomponent Micropatterns or Carbon Nanotubes JO - Synthetic Metals JF - Synthetic Metals Y1 - 2005/09/22/ VL - 154 IS - 1-3 M3 - Article SP - 225 EP - 228 SN - 03796779 AB - Abstract: The excellent optoelectronic, mechanical, and thermal properties of carbon nanotubes have made them very attractive for a wide range of potential applications. However, many applications require the growth of aligned/micropatterned carbon nanotubes. Based on our previous work on the aligned and micropatterned growth of carbon nanotubes, we have recently developed a novel approach towards the micropattern construction of perpendicularly-aligned carbon nanotubes by simply pressing a Scotch tape pre-patterned with a non-adhesive layer onto a non-patterned aligned carbon nanotube film, followed by peeling off the Scotch tape from the quartz substrate in a dry state. In conjunction with the region-specific surface modification, this dry contact transfer method has enabled us to produce various multicomponent carbon nanotube micropatterns in which different components are interposed in an intimate fashion. Examples include micropatterns with self-assembled non-aligned carbon nanotubes interdispersed into the discrete areas in the patterned structure of aligned carbon nanotubes and flexible polymer films with embedded aligned carbon nanotube networks. More recently, we have also developed a simple but effective template-free electroplating method for region-selective deposition of cobalt and nickel nanoparticles for patterned growth of carbon nanotubes. These carbon nanotube micropatterns in which multicomponents are interposed in a controllable fashion should be of significance to many nanotube based multifunctional systems. [Copyright &y& Elsevier] AB - Copyright of Synthetic Metals is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON KW - NANOTUBES KW - OXIDE minerals KW - EVAPORATION (Chemistry) KW - Alignment KW - Carbon nanotube KW - Electrodeposition KW - Micropatterning KW - Multicomponent micropatterns KW - Nanocomposite film KW - Polymer N1 - Accession Number: 18284366; Li, Lingchun 1 Yang, Junbing 2 Vaia, Richard 3 Dai, Liming 1,2; Email Address: ldai@udayton.edu; Affiliation: 1: Department of Materials and Chemical Engineering, The University of Dayton, 300 College Park, Dayton, OH 45469-0240, USA 2: Department of Polymer Engineering, University of Akron, 250 South Forge Street, Akron, OH 44325-0301, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Sep2005, Vol. 154 Issue 1-3, p225; Subject Term: CARBON; Subject Term: NANOTUBES; Subject Term: OXIDE minerals; Subject Term: EVAPORATION (Chemistry); Author-Supplied Keyword: Alignment; Author-Supplied Keyword: Carbon nanotube; Author-Supplied Keyword: Electrodeposition; Author-Supplied Keyword: Micropatterning; Author-Supplied Keyword: Multicomponent micropatterns; Author-Supplied Keyword: Nanocomposite film; Author-Supplied Keyword: Polymer; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.synthmet.2005.07.057 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18284366&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patil, A. AU - Vaia, R. AU - Dai, L. T1 - Surface Modification of Aligned Carbon Nanotube Arrays for Electron Emitting Applications JO - Synthetic Metals JF - Synthetic Metals Y1 - 2005/09/22/ VL - 154 IS - 1-3 M3 - Article SP - 229 EP - 232 SN - 03796779 AB - Abstract: We have previously developed a simple pyrolytic method for large-scale production of aligned carbon nanotube arrays perpendicular to the substrate. These aligned carbon nanotube arrays can be transferred onto various substrates of particular interest (e.g. polymer films for organic optoelectronic devices) in either a patterned or non-patterned fashion. The well-aligned structure is important, which not only allows us to prepare aligned coaxial nanowire of carbon nanotubes sheathed with polymers by electrochemical polymerization of conducting polymers on the individual nanotubes but also enables us to develop a facile approach for modification of carbon nanotube surfaces via plasma activation, followed by chemical reactions characteristic of the plasma-induced functionalities. These surface modification methods are particularly attractive, as they allow surface characteristics of the aligned carbon nanotubes to be tuned to meet specific requirements for particular applications while their alignment structure can be largely retained. The aligned carbon nanotubes with tunable surface characteristics thus prepared are of great significance to various practical applications, especially for the use of carbon nanotubes as electron emitters in flat panel displays. Particularly, we found that hexane-plasma coating reduced the turn-on electric field E to, coupled with a concomitant increase in the emission current at a constant V; the turn-on electric field decreased from E to =2.5V/μm, characteristic of the pristine aligned carbon nanotubes, to E to =1.5V/μm with a significantly increased emission current after the treatment of n-hexane plasma at 30W, 250KHz and under a monomer pressure of 0.65Torr for 2min. In this paper, we will discuss the effects of the surface modification on the electron-emitting properties of the aligned carbon nanotubes by presenting some examples from our recent work. [Copyright &y& Elsevier] AB - Copyright of Synthetic Metals is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON KW - NANOTUBES KW - PARTICLES (Nuclear physics) KW - POLYMERS KW - Aligned carbon nanotube KW - Flat panel display KW - Nanotube electron emitter KW - Plasma deposition KW - Surface modification N1 - Accession Number: 18284367; Patil, A. 1 Vaia, R. 2 Dai, L. 1; Email Address: ldai@uakron.edu; Affiliation: 1: Department of Polymer Engineering, College of Polymer Science and Polymer Engineering, University of Akron, 250 S. Forge St. Akron, OH 44235-0301, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLBP, Bldg 654, 2941 P St. Wright-Patterson AFB, OH 45433-7750. USA; Source Info: Sep2005, Vol. 154 Issue 1-3, p229; Subject Term: CARBON; Subject Term: NANOTUBES; Subject Term: PARTICLES (Nuclear physics); Subject Term: POLYMERS; Author-Supplied Keyword: Aligned carbon nanotube; Author-Supplied Keyword: Flat panel display; Author-Supplied Keyword: Nanotube electron emitter; Author-Supplied Keyword: Plasma deposition; Author-Supplied Keyword: Surface modification; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.synthmet.2005.07.058 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18284367&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - van Doren, Jane M. AU - Kerr, Donna M. AU - Miller, Thomas M. AU - Viggiano, A. A. T1 - Electron attachment and detachment, and the electron affinities of C5F5N and C5HF4N. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2005/09/15/ VL - 123 IS - 11 M3 - Article SP - 114303 PB - American Institute of Physics SN - 00219606 AB - Rate constants have been measured for electron attachment to C5F5N (297–433 K) and to 2,3,5,6-C5HF4N (303 K) using a flowing-afterglow Langmuir-probe apparatus (at a He gas pressure of 133 Pa). In both cases only the parent anion was formed in the attachment process. The attachment rate constants measured at room temperature are 1.8±0.5×10-7 and 7±3×10-10 cm-3 s-1, respectively. Rate constants were also measured for thermal electron detachment from the parent anions of these molecules. For C5F5N- detachment is negligible at room temperature, but increases to 2530±890 s-1 at 433 K. For 2,3,5,6-C5HF4N-, the detachment rate at 303 K was 520±180 s-1. The attachment/detachment equilibrium yielded experimental electron affinities EA(C5F5N)=0.70±0.05 eV and EA(2,3,5,6-C5HF4N)=0.40±0.08 eV. Electronic structure calculations were carried out for these molecules and related C5HxF5-xN using density-functional theory and the G3(MP2)∥B3LYP compound method. The EAs are found to decrease by 0.25 eV, on average, with each F substitution by H. The calculated EAs are in good agreement with the present experimental results. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - PLASMA frequencies KW - ANIONS KW - ELECTRONIC structure KW - MOLECULES KW - FREQUENCIES of oscillating systems N1 - Accession Number: 18415621; van Doren, Jane M. 1; Email Address: jvandoren@holycross.edu Kerr, Donna M. 1 Miller, Thomas M. 2 Viggiano, A. A. 2; Affiliation: 1: Department of Chemistry, College of the Holy Cross, Worcester, Massachusetts 01610-2395. 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Bedford, Massachusetts 01731-3010.; Source Info: 9/15/2005, Vol. 123 Issue 11, p114303; Subject Term: ELECTRONS; Subject Term: PLASMA frequencies; Subject Term: ANIONS; Subject Term: ELECTRONIC structure; Subject Term: MOLECULES; Subject Term: FREQUENCIES of oscillating systems; Number of Pages: 6p; Illustrations: 2 Diagrams, 3 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.2032967 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18415621&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tomczak, Melanie M. AU - Glawe, Diana D. AU - Drummy, Lawrence F. AU - Lawrence, Charles G. AU - Stone, Morley O. AU - Perry, Carole C. AU - Pochan, Darrin J. AU - Deming, Timothy J. AU - Naik, Rajesh R. T1 - Polypeptide-Templated Synthesis of Hexagonal Silica Platelets. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2005/09/14/ VL - 127 IS - 36 M3 - Article SP - 12577 EP - 12582 SN - 00027863 AB - Several studies have demonstrated the use of biomimetic approaches in the synthesis of a variety of inorganic materials. Poly-L-lysine (PLL) promotes the precipitation of silica from a silicic acid solution within minutes. The molecular weight of PLL was found to affect the morphology of the resulting silica precipitate. Larger-molecular weight PLL produced hexagonal silica platelets, whereas spherical silica particles were obtained using low-molecular weight PLL. Here we report on the polypeptide secondary- structure transition that occurs during the silicification reaction. The formation of the hexagonal silica platelets is attributed to the PLL helical chains that are formed in the presence of monosilicic acid and phosphate ions. Hexagonal PLL crystals can also serve as templates in directing the growth of the silica in a manner that generates a largely mesoporous silica phase that is oriented with respect to the protein crystal template. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON compounds KW - BLOOD platelets KW - PHYSICAL & theoretical chemistry KW - CRYOSCOPY KW - AMINO acids KW - MATTER -- Properties KW - INTERMEDIATES (Chemistry) N1 - Accession Number: 18276067; Tomczak, Melanie M. 1 Glawe, Diana D. 2 Drummy, Lawrence F. 1 Lawrence, Charles G. 1 Stone, Morley O. 1 Perry, Carole C. 3 Pochan, Darrin J. 4 Deming, Timothy J. 5 Naik, Rajesh R. 1; Email Address: rajesh.naik@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, Ohio 45433. 2: Department of Engineering Science, Trinity University, San Antonio, Texas 78212. 3: Department of Chemistry and Physics, Nottingham Trent University, Nottingham NG11 8NS, U.K. 4: Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716. 5: Department of Bioengineering, University of California at Los Angeles, Los Angeles, California 90095.; Source Info: 9/14/2005, Vol. 127 Issue 36, p12577; Subject Term: SILICON compounds; Subject Term: BLOOD platelets; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: CRYOSCOPY; Subject Term: AMINO acids; Subject Term: MATTER -- Properties; Subject Term: INTERMEDIATES (Chemistry); Number of Pages: 6p; Document Type: Article L3 - 10.1021/ja0524503 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18276067&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiang, Hao AU - Grant, J.T. AU - Eyink, K. AU - Tullis, S. AU - Enlow, J. AU - Bunning, T.J. T1 - The growth and chemical structure of thin photonic films formed from plasma copolymerization. Part II. Effect of monomer feed location JO - Polymer JF - Polymer Y1 - 2005/09/08/ VL - 46 IS - 19 M3 - Article SP - 8178 EP - 8184 SN - 00323861 AB - Abstract: Plasma copolymerization of benzene and octafluorocyclobutane (OFCB) has been successfully applied in the fabrication of photonic films with controllable refractive index profiles by accurately adjusting the comonomer feed ratio and feed locations during plasma enhanced chemical vapor deposition (PECVD). XPS, IR, and spectroscopic ellipsometry were used to determine the deposition rate, chemical composition/structure, and optical properties of the PECVD films. Three different feed locations were chosen for the OFCB monomer including downstream from the plasma zone (DS), the plasma zone edge (PE), and the center of the plasma zone (PZ). The benzene was always fed in at the DS position. For both plasma homo- and copolymerization, film deposition rates were highest utilizing the PZ feed. The addition of small amounts of benzene increased these deposition rates substantially, but also led to a dramatic decrease in the F/C ratio and significant variations in different structural units (CF x(x=1−3)) indicating the complex subtleties of plasma copolymerization. The refractive indices of the polymer thin films scaled linearly with the F/C values determined from the film composition studies. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BENZENE KW - SURFACES (Technology) KW - CHEMICAL vapor deposition KW - ELLIPSOMETRY KW - THICK films KW - VAPOR-plating KW - PECVD KW - Plasma copolymerization KW - Polymer photonics. N1 - Accession Number: 18241319; Jiang, Hao 1 Grant, J.T. 2 Eyink, K. 1 Tullis, S. 1 Enlow, J. 1 Bunning, T.J. 1; Email Address: timothy.bunning@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, 3005 Hobson Way, WPAFB, OH 45433, USA 2: Research Institute, University of Dayton, Dayton, OH 45469, USA; Source Info: Sep2005, Vol. 46 Issue 19, p8178; Subject Term: BENZENE; Subject Term: SURFACES (Technology); Subject Term: CHEMICAL vapor deposition; Subject Term: ELLIPSOMETRY; Subject Term: THICK films; Subject Term: VAPOR-plating; Author-Supplied Keyword: PECVD; Author-Supplied Keyword: Plasma copolymerization; Author-Supplied Keyword: Polymer photonics.; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.polymer.2005.06.051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18241319&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Levin, Igor AU - Davydov, Albert AU - Nikoobakht, Babak AU - Sanford, Norman AU - Mogilevsky, Pavel T1 - Growth habits and defects in ZnO nanowires grown on GaN/sapphire substrates. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/09/05/ VL - 87 IS - 10 M3 - Article SP - 103110 PB - American Institute of Physics SN - 00036951 AB - Growth habits and defects in epitaxial ZnO nanowires grown from Au catalyst on (00.1) GaN/sapphire substrate using the vapor-liquid-solid (VLS) technique were studied using electron microscopy and x-ray diffraction. The results revealed presence of both horizontal (crawling-like) and vertical nanowires having similar orientation relationship to the substrate (00.1)ZnO∥(00.1)GaN, [11.0]ZnO∥[11.0]GaN. The crawling-like growth precedes the vertical growth, and the coalescence and overgrowth of the crawling nanowires produce a highly defective layer which separates the substrate and vertical nanorods. Transmission electron microscopy revealed a high density of planar defects in this interfacial layer. A significant density of stacking faults residing on the (0001) planes was also observed in the shorter vertical nanorods. The crawling nanowires are under residual compressive strain, whereas the vertical nanorods grow strain-free. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide KW - CATALYSTS KW - NANOWIRES KW - NANOSTRUCTURED materials KW - GALLIUM nitride KW - SAPPHIRES KW - ELECTRON microscopy KW - X-ray diffraction KW - PHYSICS N1 - Accession Number: 18143313; Levin, Igor 1 Davydov, Albert 1 Nikoobakht, Babak 1 Sanford, Norman 1 Mogilevsky, Pavel 2; Affiliation: 1: National Institute of Standards and Technology, Gaithersburg, Maryland 20899 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433-7817; Source Info: 9/5/2005, Vol. 87 Issue 10, p103110; Subject Term: ZINC oxide; Subject Term: CATALYSTS; Subject Term: NANOWIRES; Subject Term: NANOSTRUCTURED materials; Subject Term: GALLIUM nitride; Subject Term: SAPPHIRES; Subject Term: ELECTRON microscopy; Subject Term: X-ray diffraction; Subject Term: PHYSICS; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 3p; Illustrations: 4 Black and White Photographs, 1 Graph; Document Type: Article L3 - 10.1063/1.2041832 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18143313&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dimiduk, D.M. AU - Uchic, M.D. AU - Parthasarathy, T.A. T1 - Size-affected single-slip behavior of pure nickel microcrystals JO - Acta Materialia JF - Acta Materialia Y1 - 2005/09// VL - 53 IS - 15 M3 - Article SP - 4065 EP - 4077 SN - 13596454 AB - Abstract: Spatial scales in crystal plasticity are understood to influence flow stresses and work-hardening rates. A direct assessment of the crystal-size dependence of the critical resolved shear stress has been made for single-slip oriented crystals of pure Ni having sample diameters that range from 40 to 1.0μm. The sample dimensions directly limit the length scales available for plasticity, but without significant external or kinematical constraint. The results show strength increases of up to 15 times over pure Ni and size-affected hardening rates. Stresses are lower, but strengthening persists to larger sizes than for the prior work on face-centered cubic metal whiskers. The results emphasize that at the micron-size scale and below both external geometry and internal structure affect the micromechanisms of deformation and strength. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL KW - PLASTICITY KW - STRAINS & stresses (Mechanics) KW - CRYSTALS KW - MICROCRYSTALLINE polymers KW - Compression test KW - Nickel KW - Plastic deformation KW - Size effects KW - Slip N1 - Accession Number: 18195051; Dimiduk, D.M. 1; Email Address: dennis.dimiduk@wpafb.af.mil Uchic, M.D. 1; Email Address: michael.uchic@wpafb.af.mil Parthasarathy, T.A. 2; Email Address: triplicane.parthasarathy@wpafb.a.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM Bldg. 655, 2230 Tenth Street, Wright-Patterson, AFB, OH 45433-7817, United States 2: UES, Inc., 4401 Dayton-Xenia Rd, Dayton, OH 45432-1894, United States; Source Info: Sep2005, Vol. 53 Issue 15, p4065; Subject Term: NICKEL; Subject Term: PLASTICITY; Subject Term: STRAINS & stresses (Mechanics); Subject Term: CRYSTALS; Subject Term: MICROCRYSTALLINE polymers; Author-Supplied Keyword: Compression test; Author-Supplied Keyword: Nickel; Author-Supplied Keyword: Plastic deformation; Author-Supplied Keyword: Size effects; Author-Supplied Keyword: Slip; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.actamat.2005.05.023 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18195051&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rizzetta, Donald P. AU - Visbal, Miguel R. T1 - Numerical Simulation of Separation Control for Transitional Highly Loaded Low-Pressure Turbines. JO - AIAA Journal JF - AIAA Journal Y1 - 2005/09// VL - 43 IS - 9 M3 - Article SP - 1958 EP - 1967 SN - 00011452 AB - The subsonic flow through highly loaded low-pressure turbines is simulated numerically using a high-order method. The configuration approximates cascade experiments that were conducted to investigate a reduction in turbine stage blade count, which can decrease both weight and mechanical complexity. At a nominal Reynolds number of 25 × 10³ based upon axial chord and inlet conditions, massive separation occurs on the suction surface of each blade as a result of uncovered turning. Pulsed injection vortex generator jets were then used to help mitigate separation, thereby reducing wake losses. Computations were performed for both uncontrolled and controlled cases and reproduced the transitional flow occurring in the aft-blade and near-wake regions. The numerical method utilizes a centered compact finite difference scheme to represent spatial derivatives, which is used in conjunction with a low-pass Pade-type nondispersive filter operator to maintain stability. An implicit approximately factored time-marching algorithm is employed, and Newton-like subiterations are applied to achieve second-order temporal accuracy. Calculations were carried out on a massively parallel computing platform, using domain decomposition to distribute subzones on individual processors. A high-order overset grid approach preserved spatial accuracy in locally refined embedded regions. Features of the flowfields are elucidated, and simulations are compared with each other and with available experimental data. Relative to the uncontrolled case, it was found that pulsed injection maintained attached flow over an additional 15% of the blade chord, resulting in a 22% decrease of the wake total pressure loss coefficient. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TURBINES KW - LOW pressure (Science) KW - AERODYNAMICS KW - PARALLEL computers KW - ALGORITHMS KW - ENGINES N1 - Accession Number: 18201981; Rizzetta, Donald P. 1 Visbal, Miguel R. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512; Source Info: Sep2005, Vol. 43 Issue 9, p1958; Subject Term: TURBINES; Subject Term: LOW pressure (Science); Subject Term: AERODYNAMICS; Subject Term: PARALLEL computers; Subject Term: ALGORITHMS; Subject Term: ENGINES; NAICS/Industry Codes: 333618 Other Engine Equipment Manufacturing; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 10p; Illustrations: 11 Diagrams, 2 Charts, 13 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18201981&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - DeAngeleis, Valerie E. T1 - DECEIVING OURSELVES. JO - Armed Forces Journal JF - Armed Forces Journal Y1 - 2005/09// VL - 143 IS - 2 M3 - Letter SP - 6 EP - 6 SN - 1559162X AB - Presents a letter to the editor in response to the article "The Case for Human Intelligence," by Ralph Peters, published in the July 2005 issue of the "Armed Forces Journal." KW - LETTERS to the editor KW - MILITARY intelligence N1 - Accession Number: 18186125; DeAngeleis, Valerie E. 1; Affiliation: 1: Air Force Superintendent Air Combat Command Military Deception Program, Langley Air Force Base, Va.; Source Info: Sep2005, Vol. 143 Issue 2, p6; Subject Term: LETTERS to the editor; Subject Term: MILITARY intelligence; Number of Pages: 1/6p; Document Type: Letter UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18186125&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cohen, Kelly AU - Siegel, Stefan AU - McLaughlin, Thomas AU - Gillies, Eric AU - Myatt, James T1 - Closed-loop approaches to control of a wake flow modeled by the Ginzburg-Landau equation. JO - Computers & Fluids JF - Computers & Fluids Y1 - 2005/09// VL - 34 IS - 8 M3 - Article SP - 927 EP - 949 SN - 00457930 AB - Abstract: A short computational program was undertaken to evaluate the effectiveness of a closed-loop control strategy for the stabilization of an unstable bluff-body flow. In this effort, the non-linear one-dimensional Ginzburg¿Landau wake model at 20% above the critical Reynolds number was studied. The numerical model, which is a non-linear partial differential equation with complex coefficients, was solved using the FEMLAB®/MATLAB® software packages and validated by comparison with published literature. At first, a model independent approach was attempted for wake suppression using feedback control. The closed-loop system was controlled using a conventional proportional-integral-derivative (PID) controller as well as a non-linear fuzzy controller. A single sensor is used for feedback, and the actuator is represented by altering the boundary conditions of the cylinder. Simulation results indicate that for a single sensor scheme, the increase in the sophistication of the control results in significantly shorter settling times. However, there is only a marginal improvement concerning the suppression of the wake at higher Reynolds numbers. The feedback control design was then augmented by switching over to a model-dependent controller. Based on computationally generated data obtained from solving the unforced wake, a low-dimensional model of the wake was developed and evaluated. The low-dimensional model of the unforced Ginzburg¿Landau equation captures more than 99.8% of the kinetic energy using just two modes. Two sensors, placed in the absolutely unstable region of the wake, are used for real-time estimation of the first two modes. The estimator was developed using the linear stochastic estimation scheme. Finally, the loop is closed using a PID controller that provides the command input to the variable boundary conditions of the model. This method is relatively simple and easy to implement in a real-time scenario. The control approach, applied to the 300 node FEMLAB® model at 20% above the unforced critical Reynolds number stabilizes the entire wake. Compared to the model-independent controllers, the controller based on the low-dimensional model is far more effective in the suppression of the wake at higher Reynolds numbers. Furthermore, while the latter approach employs only the estimated temporal amplitude of the first mode of the imaginary part of the amplitude, all higher modes are stabilized. This suggests that the higher order modes are caused by a secondary instability that is suppressed once the primary instability is controlled. [Copyright &y& Elsevier] AB - Copyright of Computers & Fluids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - DETECTORS KW - BOUNDARY value problems KW - DIFFERENTIAL equations N1 - Accession Number: 17017093; Cohen, Kelly 1 Siegel, Stefan 1; Email Address: stefan.siegel@usafa.af.mil McLaughlin, Thomas 1 Gillies, Eric 2 Myatt, James 3; Affiliation: 1: Department of Aeronautics, US Air Force Academy, 2354 Fairchild, Dr. Suite 6H27, CO 80840-62222, United States 2: Department of Aerospace Engineering, University of Glasgow, Glasgow, Scotland G12 8QQ, United Kingdom 3: Air Force Research Laboratory/Air Vehicles Directorate, Wright-Patterson AFB, OH 45433, United States; Source Info: Sep2005, Vol. 34 Issue 8, p927; Subject Term: AERODYNAMICS; Subject Term: DETECTORS; Subject Term: BOUNDARY value problems; Subject Term: DIFFERENTIAL equations; Number of Pages: 23p; Document Type: Article L3 - 10.1016/j.compfluid.2004.08.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17017093&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gunn, Daniel V. AU - Warm, Joel S. AU - Nelson, W. Todd AU - Bolia, Robert S. AU - Schumsky, Donald A. AU - Corcoran, Kevin J. T1 - Target acquisition with UAVs: vigilance displays and advanced cuing interfaces. JO - Human Factors JF - Human Factors Y1 - 2005///Fall2005 VL - 47 IS - 3 M3 - journal article SP - 488 EP - 497 SN - 00187208 AB - Vigilance and threat detection are critical human factors considerations in the control of unmanned aerial vehicles (UAVs). Utilizing a vigilance task in which threat detections (critical signals) led observers to perform a subsequent manual target acquisition task, this study provides information that might have important implications for both of these considerations in the design of future UAV systems. A sensory display format resulted in more threat detections, fewer false alarms, and faster target acquisition times and imposed a lighter workload than did a cognitive display format. Additionally, advanced visual, spatial-audio, and haptic cuing interfaces enhanced acquisition performance over no cuing in the target acquisition phase of the task, and they did so to a similar degree. Thus, in terms of potential applications, this research suggests that a sensory format may be the best display format for threat detection by future UAV operators, that advanced cuing interfaces may prove useful in future UAV systems, and that these interfaces are functionally interchangeable. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WEAPONS systems KW - SPACE vehicles KW - AERONAUTICS -- Human factors KW - NAVIGATION (Astronautics) KW - ERGONOMICS KW - AERONAUTICS N1 - Accession Number: 19023174; Gunn, Daniel V. 1; Email Address: dgunn@microsoft.com Warm, Joel S. 2 Nelson, W. Todd 3 Bolia, Robert S. 3 Schumsky, Donald A. 2 Corcoran, Kevin J. 2; Affiliation: 1: Microsoft Game Studios, Redmond, Washington 2: University of Cincinnati, Cincinnati, Ohio 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio; Source Info: Fall2005, Vol. 47 Issue 3, p488; Subject Term: WEAPONS systems; Subject Term: SPACE vehicles; Subject Term: AERONAUTICS -- Human factors; Subject Term: NAVIGATION (Astronautics); Subject Term: ERGONOMICS; Subject Term: AERONAUTICS; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 10p; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19023174&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brungart, Douglas S. AU - Kordik, Alexander J. AU - Simpson, Brian D. T1 - Audio and visual cues in a two-talker divided attention speech-monitoring task. JO - Human Factors JF - Human Factors Y1 - 2005///Fall2005 VL - 47 IS - 3 M3 - journal article SP - 562 EP - 573 SN - 00187208 AB - Although audiovisual (AV) cues are known to improve speech intelligibility in difficult listening environments, little is known about their role in divided attention tasks that require listeners to monitor multiple talkers at the same time. In this experiment, a call-sign-based multitalker listening test was used to evaluate performance in two-talker AV configurations that combined zero, one, or two channels of visual information (neither, one, or both talkers visible) with zero, one, or two channels of audio information (no audio, both talkers played from the same loudspeaker, and both talkers played through different, spatially separated loudspeakers). The results were analyzed to determine the relative performance levels that would occur with each AV configuration with target information that was equally likely to originate from either of the two talkers in the stimulus. The results indicate that spatial separation of the audio signals has the greatest impact on performance in multichannel AV speech displays and that caution should be used when presenting a visual representation of only a single talker unless that talker is known to be the highest priority talker in the combined AV stimulus. Potential applications of this research include the design of improved audiovisual speech displays for multichannel communications systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AUDIOVISUAL materials KW - MULTICHANNEL communication KW - LISTENING KW - LISTENING skills KW - LISTENING comprehension tests KW - ERGONOMICS N1 - Accession Number: 19023294; Brungart, Douglas S. 1; Email Address: brungart@wpafb.af.mil Kordik, Alexander J. 2 Simpson, Brian D. 3; Affiliation: 1: Air Force Laboratory, Wright-Patterson Air Force Base, Ohio 2: Sytronics, Inc., Dayton, Ohio 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio; Source Info: Fall2005, Vol. 47 Issue 3, p562; Subject Term: AUDIOVISUAL materials; Subject Term: MULTICHANNEL communication; Subject Term: LISTENING; Subject Term: LISTENING skills; Subject Term: LISTENING comprehension tests; Subject Term: ERGONOMICS; Number of Pages: 12p; Illustrations: 6 Diagrams, 1 Chart, 2 Graphs; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19023294&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Arthur Jr., Winfred AU - Edwards, Bryan D. AU - Bell, Suzanne T. AU - Villado, Anton J. AU - Bennett Jr., Winston AU - Arthur, Winfred Jr AU - Bennett, Winston Jr T1 - Team task analysis: identifying tasks and jobs that are team based. JO - Human Factors JF - Human Factors Y1 - 2005///Fall2005 VL - 47 IS - 3 M3 - journal article SP - 654 EP - 669 SN - 00187208 AB - This paper presents initial information on the development and validation of three team task analysis scales. These scales were designed to quantitatively assess the extent to which a group of tasks or a job is team based. During a 2-week period, 52 male students working in 4-person teams were trained to perform a complex highly interdependent computer-simulated combat mission consisting of both individual- and team-based tasks. Our results indicated that the scales demonstrated high levels of interrater agreement. In addition, the scales differentiated between tasks that were predetermined to be individual versus team based. Finally, the results indicated that job-level ratings of team workflow were more strongly related to team performance than were aggregated task-level ratings of team-relatedness or team workflow. These results suggest that the scales presented here are an effective means of quantifying the extent to which tasks or jobs are team based. A research and practical implication of our findings is that the team task analysis scales could serve as criterion measures in the evaluation of team training interventions or predictors of team performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TASK analysis KW - WORK measurement KW - EMPLOYEES -- Workload KW - PERFORMANCE KW - JOB evaluation KW - PERSONNEL management N1 - Accession Number: 19023329; Arthur Jr., Winfred 1; Email Address: wea@psyc.tamu.edu Edwards, Bryan D. 1 Bell, Suzanne T. 1 Villado, Anton J. 1 Bennett Jr., Winston 2 Arthur, Winfred Jr 3 Bennett, Winston Jr; Affiliation: 1: Texas A&M University, College Station, Texas 2: U.S. Air Force Research Laboratory, Mesa, Arizona 3: Department of Psychology, Texas A&M University, College Station 77843-4235, USA; Source Info: Fall2005, Vol. 47 Issue 3, p654; Subject Term: TASK analysis; Subject Term: WORK measurement; Subject Term: EMPLOYEES -- Workload; Subject Term: PERFORMANCE; Subject Term: JOB evaluation; Subject Term: PERSONNEL management; NAICS/Industry Codes: 541612 Human Resources Consulting Services; NAICS/Industry Codes: 923130 Administration of Human Resource Programs (except Education, Public Health, and Veterans' Affairs Programs); Number of Pages: 16p; Illustrations: 5 Charts; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19023329&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chakravarthy, Vasu AU - Nunez, Abel S. AU - Stephens, James P. AU - Shaw, Arnab K. AU - Temple, Michael A. T1 - TDCS, OFDM, and MC-CDMA: A Brief Tutorial. JO - IEEE Communications Magazine JF - IEEE Communications Magazine Y1 - 2005/09// VL - 43 IS - 9 M3 - Article SP - S11 EP - S16 SN - 01636804 AB - This article gives a brief tutorial on transform-domain communication system (TDCS), OFDM, and MC-CDMA. The primary goal of this article is to give a detailed description of the TDCS transmitter and receiver systems and to highlight the fundamental differences relative to OFDM and MC-CDMA. The fundamental idea in TDCS is to synthesize a smart adaptive waveform to avoid interference at the transmitter instead of the more traditional mitigating of interference at the receiver. Unlike OFDM and MC-CDMA, TDCS has very little exposure in the current literature. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Communications Magazine is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TELECOMMUNICATION systems KW - CODE division multiple access KW - ORTHOGONAL frequency division multiplexing KW - BROADBAND communication systems KW - RADIO transmitter-receivers KW - SPREAD spectrum communications N1 - Accession Number: 18352668; Chakravarthy, Vasu 1; Email Address: vasu.chakravarthy@wpafb.af.mil Nunez, Abel S. 2 Stephens, James P. 1 Shaw, Arnab K. 3 Temple, Michael A. 4; Affiliation: 1: Electronic Engineer, Air Force Research Laboratory, Sensors Directorate. 2: Project Engineer, Air Force Research Laboratory, Sensors Directorate. 3: Professor, Electrical Engineering Department, Wright State University, Ohio. 4: Associate Professor of Electrical Engineering, Air Force Institute of Technology.; Source Info: Sep2005, Vol. 43 Issue 9, Special section pS11; Subject Term: TELECOMMUNICATION systems; Subject Term: CODE division multiple access; Subject Term: ORTHOGONAL frequency division multiplexing; Subject Term: BROADBAND communication systems; Subject Term: RADIO transmitter-receivers; Subject Term: SPREAD spectrum communications; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 517410 Satellite Telecommunications; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18352668&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Altshuler, Edward E. T1 - A Method for Matching an Antenna Having a Small Radiation Resistance to a 50-ohm Coaxial Line. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2005/09// VL - 53 IS - 9 M3 - Article SP - 3086 EP - 3089 SN - 0018926X AB - It is shown that it is possible to match an antenna having a very low radiation resistance to a 50-ohm coaxial line using an inductive matching post near the base of the antenna. This technique is illustrated using two electrically small self-resonant genetic antennas. The input admittances of these antennas are simulated with and without the matching posts; the antennas are then fabricated and these results are verified experimentally. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNA radiation patterns KW - ANTENNAS (Electronics) KW - COAXIAL cables KW - RESONANT vibration KW - RADIATION measurements KW - COMBINATORIAL optimization KW - Electrically small antennas KW - genetic algorithm (GA) KW - impedance matching N1 - Accession Number: 18352402; Altshuler, Edward E. 1; Email Address: edward.altshuler@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Hanscom AFB, MA 01731 USA.; Source Info: Sep2005, Vol. 53 Issue 9, p3086; Subject Term: ANTENNA radiation patterns; Subject Term: ANTENNAS (Electronics); Subject Term: COAXIAL cables; Subject Term: RESONANT vibration; Subject Term: RADIATION measurements; Subject Term: COMBINATORIAL optimization; Author-Supplied Keyword: Electrically small antennas; Author-Supplied Keyword: genetic algorithm (GA); Author-Supplied Keyword: impedance matching; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 335920 Communication and energy wire and cable manufacturing; NAICS/Industry Codes: 335929 Other Communication and Energy Wire Manufacturing; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TAP.2005.854543 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18352402&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pajić, Srdjan AU - Narisi Wang AU - Watson, Paul M. AU - Quach, Tony K. AU - Popović, Zoya T1 - X-Band Two-Stage High-Efficiency Switched-Mode Power Amplifiers. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques Y1 - 2005/09// VL - 53 IS - 9 M3 - Article SP - 2899 EP - 2907 SN - 00189480 AB - This paper presents efficiency optimization of X-band two-stage microwave power amplifiers (PAs) in which the output stage is designed to operate in class-E mode. A hybrid PA which uses the same MESFET devices in both stages achieves 16 dB of saturated gain with an output power of 20 dBm and total power added efficiency (PAE) of 52% at 10 GHz. A broadband monolithic two-stage double heterojunction bipolar transistor PA, fabricated by Northrop Grumman Space Technology, with a class-AB first stage and class-E second stage achieves 24.6 dBm of output power with 24.6-dB gain and total PAE of 52% at 8 GHz. The design is performed starting from class-E theory and using load-pull measurements and/or nonlinear simulations. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC amplifiers KW - HETEROJUNCTIONS KW - SEMICONDUCTORS KW - BROADBAND communication systems KW - TRANSISTORS KW - MICROWAVES KW - Class E KW - load-pull KW - power amplifiers KW - two stage. N1 - Accession Number: 18281724; Pajić, Srdjan 1 Narisi Wang 1 Watson, Paul M. 2; Email Address: paul.watson@wpatb.af.mil Quach, Tony K. 2 Popović, Zoya 1; Email Address: zoya.popovic@colorado.edu; Affiliation: 1: Department of Electrical and Computer Engineering, University of Colorado, Boulder, Boulder, CO 80309-0425 USA. 2: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, WPAFB, OH 45433 USA.; Source Info: Sep2005, Vol. 53 Issue 9, p2899; Subject Term: ELECTRONIC amplifiers; Subject Term: HETEROJUNCTIONS; Subject Term: SEMICONDUCTORS; Subject Term: BROADBAND communication systems; Subject Term: TRANSISTORS; Subject Term: MICROWAVES; Author-Supplied Keyword: Class E; Author-Supplied Keyword: load-pull; Author-Supplied Keyword: power amplifiers; Author-Supplied Keyword: two stage.; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TMTT.2005.854239 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18281724&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Calcaterra, Jeff AU - Naboulsi, Samir T1 - Design methodology to investigate contact fatigue damage in turbine engine hardware JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2005/09// VL - 27 IS - 9 M3 - Article SP - 1133 EP - 1141 SN - 01421123 AB - Abstract: One of the most significant maintenance drivers in current turbine engines is contact fatigue damage where turbine blades are inserted into the disk. This is commonly referred to as the dovetail slot. The stress state at the dovetail slot is difficult to determine with standard finite element analysis because of the nonlinear nature of the contact problem. Because of this, a design methodology based on singular integral equation analysis has been developed. This design methodology is used for the first time to compare the contact stress behavior of similar components from two different turbine engines. The use of singular integral equation methods to analyze these components is supported by a similar analysis on a dovetail experimental fixture. Stress predictions by the singular integral equation method compare well to finite element methods for static stress conditions in a dovetail slot. Additionally, the results from the component analysis indicate that there is a correlation between stress state and damage seen during maintenance. However, details concerning the correlation still need to be resolved. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE KW - FINITE element method KW - ENGINES KW - TURBINES KW - Contact fatigue KW - Dovetail KW - Fretting KW - Integral equation N1 - Accession Number: 18234571; Calcaterra, Jeff 1 Naboulsi, Samir 2; Email Address: samir.naboulsi@afit.edu; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7817, USA 2: Department of Aeronautics and Astronautics, Air Force Institute of Technology, 2950 P St. Bldg 640ENY, Wright-Patterson AFB, OH 45433-7765, USA; Source Info: Sep2005, Vol. 27 Issue 9, p1133; Subject Term: FATIGUE; Subject Term: FINITE element method; Subject Term: ENGINES; Subject Term: TURBINES; Author-Supplied Keyword: Contact fatigue; Author-Supplied Keyword: Dovetail; Author-Supplied Keyword: Fretting; Author-Supplied Keyword: Integral equation; NAICS/Industry Codes: 333618 Other Engine Equipment Manufacturing; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijfatigue.2005.01.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18234571&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patel, Mehul P. AU - Kolacinski, Richard M. AU - Prince, Troy S. AU - Ng, T. Terry AU - Myatt, James H. T1 - Novel Hierarchical Modular Control Methodology for Closed-Loop Flow-Control Applications. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2005/09//Sep/Oct2005 VL - 42 IS - 5 M3 - Article SP - 1099 EP - 1108 SN - 00218669 AB - A novel hierarchical modular control methodology using closed-loop flow control for active virtual shaping of aerodynamic surfaces is developed. Through wind tunnel experimentation and numerical simulation, we show that collocated sensor-actuator pairs and closed-loop feedback control can effectively modulate the local flow phenomenon and, furthermore, by coordinating the local flow phenomenon, macroscopic force and moment effects can be induced on the aerodynamic surface. The results of flow experiments at Mach 0.08 on a two-dimensional airfoil are used to construct a dynamic model of the effect of discrete suction actuators, and a closed-loop adaptive control system is designed to modulate the local flow phenomenon based on this model. A feedforward control system is then constructed to coordinate the behavior of multiple intelligent control modules, each composed of a collocated sensor-actuator pair and a closed-loop control system. In conclusion, we use a full six-degree-of-freedom numerical simulation to investigate the application of the aggregate system to tracking desired rolling and pitching moment trajectories via actuator-induced aeroshaping of the aerodynamic surfaces of an aircraft. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE control systems KW - AERODYNAMICS KW - WIND tunnels KW - ACTUATORS KW - AEROFOILS N1 - Accession Number: 18775403; Patel, Mehul P. 1,2 Kolacinski, Richard M. 3,4 Prince, Troy S. 4,5 Ng, T. Terry 2,6 Myatt, James H. 2,7; Affiliation: 1: Director, Aerodynamics Group, 4415 Euclid Avenue, Suite 500, Orbital Research, Inc., Cleveland, Ohio 44103 2: Senior Member, AIAA 3: Director, Advanced Controls Group, 4415 Euclid Avenue, Suite 500, Orbital Research, Inc., Cleveland, Ohio 44103 4: Member, AIAA 5: Vice President of Technology, 4415 Euclid Avenue, Suite 500, Orbital Research, Inc., Cleveland, Ohio 44103 6: Professor, Department of Mechanical, Industrial, and Manufacturing Engineering, Nitschke Hall 4061, University of Toledo, Toledo, Ohio 43606 7: Senior Aerospace Engineer, 2210 8th Street, Building 146, Room 300, U.S. Air Force Research Laboratory Wright-Patterson Air Force Base, Ohio 45433; Source Info: Sep/Oct2005, Vol. 42 Issue 5, p1099; Subject Term: AIRPLANE control systems; Subject Term: AERODYNAMICS; Subject Term: WIND tunnels; Subject Term: ACTUATORS; Subject Term: AEROFOILS; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 10p; Illustrations: 4 Diagrams, 1 Chart, 16 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18775403&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Longacre, Edward G. T1 - Confederate General R. S. Ewell: Robert E. Lee's Hesitant Commander. JO - Journal of American History JF - Journal of American History Y1 - 2005/09// VL - 92 IS - 2 M3 - Book Review SP - 613 EP - 614 PB - Oxford University Press / USA SN - 00218723 AB - The article reviews the book "Confederate General R. S. Ewell: Robert E. Lee's Hesitant Commander," by Paul D. Casdorph. KW - NONFICTION KW - BIOGRAPHIES KW - CASDORPH, Paul D. KW - CONFEDERATE General R.S. Ewell: Robert E. Lee's Hesitant Commander (Book) N1 - Accession Number: 19324373; Longacre, Edward G. 1; Affiliation: 1: Headquarters Air Combat Command, USAF, Langley, Virginia; Source Info: Sep2005, Vol. 92 Issue 2, p613; Subject Term: NONFICTION; Subject Term: BIOGRAPHIES; Reviews & Products: CONFEDERATE General R.S. Ewell: Robert E. Lee's Hesitant Commander (Book); People: CASDORPH, Paul D.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19324373&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Farrier, Lisa M. AU - Szaruga, Stephen L. T1 - Sample preparation and characterization of artificially aged aircraft coatings for microstructural analysis JO - Materials Characterization JF - Materials Characterization Y1 - 2005/09// VL - 55 IS - 3 M3 - Article SP - 179 EP - 189 SN - 10445803 AB - Abstract: The paper describes a method for metallographic preparation of artificially aged aircraft coatings. In order to better understand the in-service performance and identify degradation mechanisms of an aircraft coating, complete characterization of the microstructure is essential. This paper discusses metallographic sample preparation and subsequent microscopy techniques (light optical microscopy, scanning electron microscopy) for characterization of a standard polyurethane aircraft coating system. The preparation method has proven to produce good, consistent results on a wide range of laboratory-produced simulated environmental exposures. The military specification coating system under study (MIL-PRF-85285C and MIL-PRF-23377G) degrades severely after accelerated weathering. Typical degradation includes deterioration of the polyurethane-based resin system in the topcoat and is observed as a visible change in the color. Increased porosity and some physical deterioration were also observed. In addition, some inorganic pigments in the primer appear to migrate into the topcoat during simulated exposure. [Copyright &y& Elsevier] AB - Copyright of Materials Characterization is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE coatings KW - AIRPLANES KW - METALLOGRAPHY KW - PRIMERS (Coating) KW - SURFACES (Technology) KW - PARTICLES (Nuclear physics) KW - Coating degradation KW - Microstructural analysis KW - Military aircraft KW - Polyurethane N1 - Accession Number: 18262645; Farrier, Lisa M.; Email Address: Lisa.Farrier@wpafb.af.mil Szaruga, Stephen L. 1; Affiliation: 1: Air Force Research Laboratory, Materials Directorate, Wright-Patterson Air Force Base, Ohio 45433-7750, United States; Source Info: Sep2005, Vol. 55 Issue 3, p179; Subject Term: SURFACE coatings; Subject Term: AIRPLANES; Subject Term: METALLOGRAPHY; Subject Term: PRIMERS (Coating); Subject Term: SURFACES (Technology); Subject Term: PARTICLES (Nuclear physics); Author-Supplied Keyword: Coating degradation; Author-Supplied Keyword: Microstructural analysis; Author-Supplied Keyword: Military aircraft; Author-Supplied Keyword: Polyurethane; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.matchar.2005.04.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18262645&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Naik, Rajesh R. AU - Stone, Morley O. T1 - Integrating biomimetics JO - Materials Today JF - Materials Today Y1 - 2005/09// VL - 8 IS - 9 M3 - Article SP - 18 EP - 26 SN - 13697021 AB - Over the past decade, biology has had a profound influence on materials science and engineering, and much of this influence is yet to come. The tools of nanotechnology have enabled researchers to examine intricate and ingenious solutions that nature has devised in diverse areas ranging from structures to signaling. This overview focuses on biologically inspired materials science and engineering. [Copyright &y& Elsevier] AB - Copyright of Materials Today is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOMETRY KW - BIOLOGY KW - MATERIALS science KW - NANOTECHNOLOGY KW - BIOMATHEMATICS N1 - Accession Number: 18195126; Naik, Rajesh R. 1 Stone, Morley O. 1; Email Address: morley.stone@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Sep2005, Vol. 8 Issue 9, p18; Subject Term: BIOMETRY; Subject Term: BIOLOGY; Subject Term: MATERIALS science; Subject Term: NANOTECHNOLOGY; Subject Term: BIOMATHEMATICS; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 9p; Document Type: Article L3 - 10.1016/S1369-7021(05)71077-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18195126&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Davis Perry, Lori A. T1 - THE LITERARY MODEL FOR ELIZABETH SINGER ROWE'S 'HISTORY OF JOSEPH'. JO - Notes & Queries JF - Notes & Queries Y1 - 2005/09// VL - 52 IS - 3 M3 - Literary Criticism SP - 349 EP - 351 SN - 00293970 AB - This article focuses on poet Elizabeth Singer Rowe and her pastoral epic "History of Joseph in Eight Books." A second edition, expanded to ten books, appeared soon after her death. The poem had been circulating in manuscript for many years, and Rowe left no dated manuscripts of the poem. However, the discovery of Rowe's literary model for the poem sheds significant light on its probable date of composition. Based upon striking similarities in subject matter, poetic style, and structure, the direct inspiration for Rowe's poem was almost certainly Daniel Baker's poem "Joseph," published in his "Poems Upon Several Occasions." KW - POETRY (Literary form) KW - MANUSCRIPTS KW - INSPIRATION KW - CREATIVE ability KW - ROWE, Elizabeth Singer KW - HISTORY of Joseph in Eight Books (Book) N1 - Accession Number: 18562312; Davis Perry, Lori A. 1; Affiliation: 1: United States Air Force Academy.; Source Info: Sep2005, Vol. 52 Issue 3, p349; Subject Term: POETRY (Literary form); Subject Term: MANUSCRIPTS; Subject Term: INSPIRATION; Subject Term: CREATIVE ability; Reviews & Products: HISTORY of Joseph in Eight Books (Book); People: ROWE, Elizabeth Singer; Number of Pages: 3p; Document Type: Literary Criticism L3 - 10.1093/notesj/gji3l8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18562312&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, T.J. AU - Barnes, P.N. AU - Campbell, T.A. AU - Goyal, A. AU - Gapud, A. AU - Heatherly, L. AU - Kang, S. T1 - Deposition of (Y2BaCuO5/YBa2Cu3O7−x )× N multilayer films on Ni-based textured substrates JO - Physica C JF - Physica C Y1 - 2005/09// VL - 425 IS - 1/2 M3 - Article SP - 21 EP - 26 SN - 09214534 AB - Abstract: Deposition of (Y2BaCuO5–0.5nm/YBa2Cu3O7−x∼15nm)× N multilayer films on rolling-assisted biaxially textured Ni-alloy (RABiTSTM) substrates was investigated, as a new candidate coated conductor architecture for improved flux pinning. Significant enhancements of critical current density (J c)>6-fold were measured for applied magnetic fields up to 7T at 77K, for multilayer films compared to YBa2Cu3O7−x —only films. By comparing J c(H)/J c(0T) plots of films deposited on RABiTS and single-crystal substrates, the relative increase of J c(H) from pinning was the same as measured on both substrates. This indicates the varying microstructural properties of the RABiTS templates were, on average, not adversely affecting the pinning enhancements. [Copyright &y& Elsevier] AB - Copyright of Physica C is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISLOCATIONS in crystals KW - MAGNETIC fields KW - ELECTRIC currents KW - SUPERCONDUCTIVITY KW - Coated conductor KW - Flux pinning KW - Nanoparticle KW - YBCO N1 - Accession Number: 18205476; Haugan, T.J. 1; Email Address: timothy.haugan@wpafb.af.mil Barnes, P.N. 1 Campbell, T.A. 1 Goyal, A. 2 Gapud, A. 2 Heatherly, L. 2 Kang, S. 2; Affiliation: 1: Air Force Research Laboratory, Propulsion Directorate, 1950 Fifth Street Building 450, Wright-Patterson AFB, OH 45433-7251, United States 2: Oak Ridge National Laboratory, 1 Bethel Valley Road, Building 4500S, Room No. S-250, Oak Ridge, TN 37831-6116, United States; Source Info: Sep2005, Vol. 425 Issue 1/2, p21; Subject Term: DISLOCATIONS in crystals; Subject Term: MAGNETIC fields; Subject Term: ELECTRIC currents; Subject Term: SUPERCONDUCTIVITY; Author-Supplied Keyword: Coated conductor; Author-Supplied Keyword: Flux pinning; Author-Supplied Keyword: Nanoparticle; Author-Supplied Keyword: YBCO; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.physc.2005.05.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18205476&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kotov, Roman AU - Schmidt, Norman B. AU - Lerew, Darin R. AU - Joiner, Jr., Thomas E. AU - Ialongo, Nicholas S. T1 - Latent Structure of Anxiety: Taxometric Exploration. JO - Psychological Assessment JF - Psychological Assessment Y1 - 2005/09// VL - 17 IS - 3 M3 - Article SP - 369 EP - 374 SN - 10403590 AB - Taxometrics is a statistical tool that can be used to discern categories from continua. Taxometric analyses (MAXCOV and MAXEIG) were conducted in a large nonclinical sample (N = 1,215) to determine whether extreme anxiety forms a distinct psychopathological category, an anxiety taxon. Anxiety was operationalized with self-report measures of subjective anxiety, anxious cognitive style, physiological arousal, and anxiety-related impairment. Procedures consistently identified a taxon with a prevalence of approximately 11 %. Examination of the taxon's convergent and discriminant validity revealed that it reflects general distress rather than physiological arousal. Taxon membership showed some evidence of incremental validity. [ABSTRACT FROM AUTHOR] AB - Copyright of Psychological Assessment is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANXIETY KW - NUMERICAL taxonomy KW - EMOTIONS (Psychology) KW - NEUROSES KW - STATISTICS KW - PATHOLOGICAL psychology KW - anxiety KW - general distress KW - taxometrics KW - taxon N1 - Accession Number: 18940615; Kotov, Roman 1 Schmidt, Norman B. 2; Email Address: schmidt@psy.fsu.edu Lerew, Darin R. 3 Joiner, Jr., Thomas E. 2 Ialongo, Nicholas S. 4; Affiliation: 1: Department of Psychology, University of Iowa. 2: Department of Psychology, Florida State University. 3: Department of Medical and Clinical Psychology, United States Air Force Academy. 4: Department of Mental Health, Bloomberg School of Public Health, Johns Hopkins University.; Source Info: Sep2005, Vol. 17 Issue 3, p369; Subject Term: ANXIETY; Subject Term: NUMERICAL taxonomy; Subject Term: EMOTIONS (Psychology); Subject Term: NEUROSES; Subject Term: STATISTICS; Subject Term: PATHOLOGICAL psychology; Author-Supplied Keyword: anxiety; Author-Supplied Keyword: general distress; Author-Supplied Keyword: taxometrics; Author-Supplied Keyword: taxon; Number of Pages: 6p; Document Type: Article L3 - 10.1037/1040-3590.17.3.369 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18940615&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Druffner, Carl J. AU - Perram, Glen P. AU - Biggers, Rand R. T1 - Time-of-flight emission profiles of the entire plume using fast imaging during pulsed laser deposition of YBa2Cu3O7-x. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2005/09// VL - 76 IS - 9 M3 - Article SP - 093101 PB - American Institute of Physics SN - 00346748 AB - Emission time-of-flight (TOF) profiles have been obtained using gated imagery to further the process control during the pulsed laser deposition of the high temperature superconductor, YBa2Cu3O7-x. An intensified charge coupled device array was used to obtain a sequence of plume images at 10 ns temporal resolution and 0.2 mm spatial resolution. Plume imagery is transformed to TOF profiles and pulse-to-pulse variations removed using physically based smoothing techniques. Comparison with non-imaging sensors establishes excellent agreement, with systematic uncertainties in streaming speed and temperatures of less than 15% and 8%, respectively. The resulting streaming speeds of 0.4–1.2×106 cm/s and characteristic temperatures of 20 000–200 000 K are characterized across the full plume. This new imaging TOF technique enables the monitoring of the complete evolution of speed distributions. Indeed, significant deviations from the forward-directed Maxwellian speed distributions are observed. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TIME-of-flight mass spectrometry KW - TIME measurements KW - IMAGING systems KW - PULSED laser deposition KW - COATING processes N1 - Accession Number: 18415571; Druffner, Carl J. 1 Perram, Glen P. 1; Email Address: glen.perram@afit.edu Biggers, Rand R. 2; Affiliation: 1: Department of Engineering Physics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433-7765 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, 2977 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433-7746; Source Info: Sep2005, Vol. 76 Issue 9, p093101; Subject Term: TIME-of-flight mass spectrometry; Subject Term: TIME measurements; Subject Term: IMAGING systems; Subject Term: PULSED laser deposition; Subject Term: COATING processes; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1063/1.2018503 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18415571&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - KOLENC, ANTONY B. T1 - EASING ABORTION'S PAIN: CAN FETAL PAIN LEGISLATION SURVIVE THE NEW JUDICIAL SCRUTINY OF LEGISLATIVE FACT-FINDING? JO - Texas Review of Law & Politics JF - Texas Review of Law & Politics Y1 - 2005///Fall2005 VL - 10 IS - 1 M3 - Article SP - 171 EP - 228 PB - University of Texas at Austin School of Law Publications SN - 10984577 AB - The article discusses views on whether fetal pain legislation can survive the judicial scrutiny of legislative fact-finding in the United States. It particular, it examines what fetal pain legislation would do, the constitutionality of the Act, issues affecting the judicial scrutiny of legislative fact-finding, medical and scientific evidence regarding fetal pain, and how much difference courts should give to findings about fetal pain. KW - FETUS -- Legal status, laws, etc. KW - PAIN KW - JUSTICE administration KW - UNBORN children (Law) KW - UNITED States N1 - Accession Number: 19846508; KOLENC, ANTONY B. 1; Affiliation: 1: Major, USAF (J.D., University of Florida) is an Assistant Professor in the Department of Law at the United States Air Force Academy; Source Info: Fall2005, Vol. 10 Issue 1, p171; Subject Term: FETUS -- Legal status, laws, etc.; Subject Term: PAIN; Subject Term: JUSTICE administration; Subject Term: UNBORN children (Law); Subject Term: UNITED States; Number of Pages: 58p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19846508&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carr, Paul H. T1 - A THEOLOGY FOR EVOLUTION: HAUGHT, TEILHARD, AND TILLICH. JO - Zygon: Journal of Religion & Science JF - Zygon: Journal of Religion & Science Y1 - 2005/09// VL - 40 IS - 3 M3 - Article SP - 733 EP - 738 PB - Wiley-Blackwell SN - 05912385 AB - Paul Tillich and Pierre Teilhard de Chardin both have made contributions to a theology of evolution. In a 2002 essay John Haught expresses doubt that Tilllich's rather classical theology of “being” is radical enough to account for the “becoming” of evolution. Tillich's ontology of being includes the polarity of form and dynamics. Dynamics is the potentiality of being, that is, becoming. Tillich's dynamic dialectic of being and nonbeing is a more descriptive metaphor for the five mass extinctions of evolutionary history than Teilhard's progress. This dialectic is also a more realistic description of cosmic evolution. Tillich's “Kingdom of God” within history as well as “the End of History,” in contrast to Teilhard's Omega Point, does not appear to contradict the Second Law of Thermodynamics, which predicts that the universe will ultimately disintegrate. Haught's contrast/contact modes of relating science and religion would regard Teilhard's Omega Point as an expression of spiritual hope and purpose rather than a scientifically verifiable principle. The contrast/ contact position is consonant with Tillich's description of religion as part of the vertical dimension of ultimate concern and science as part of the horizontal dimension of relationships between finite objects. Tillich did not share Teilhard's optimistic vision of the future. [ABSTRACT FROM AUTHOR] AB - Copyright of Zygon: Journal of Religion & Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EVOLUTION (Biology) KW - RELIGION & science KW - THEOLOGY KW - EXTINCTION (Biology) KW - THERMODYNAMICS KW - COSMOLOGY KW - being and nonbeing KW - dynamic dialectic KW - End of History KW - horizontal dimension and vertical dimension KW - Kingdom of God KW - Omega Point KW - science and religion N1 - Accession Number: 18165517; Carr, Paul H. 1; Email Address: paul.carr2@comcast.net; Affiliation: 1: Led the Component Technology Branch, Air Force Research Laboratory, Hanscom AFB, MA 01731; Source Info: Sep2005, Vol. 40 Issue 3, p733; Subject Term: EVOLUTION (Biology); Subject Term: RELIGION & science; Subject Term: THEOLOGY; Subject Term: EXTINCTION (Biology); Subject Term: THERMODYNAMICS; Subject Term: COSMOLOGY; Author-Supplied Keyword: being and nonbeing; Author-Supplied Keyword: dynamic dialectic; Author-Supplied Keyword: End of History; Author-Supplied Keyword: horizontal dimension and vertical dimension; Author-Supplied Keyword: Kingdom of God; Author-Supplied Keyword: Omega Point; Author-Supplied Keyword: science and religion; Number of Pages: 6p; Document Type: Article L3 - 10.1111/j.1467-9744.2005.00699.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18165517&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Amer, Maher S. AU - Elliott, James A. AU - Maguire, John F. AU - Windle, Allan H. T1 - Calculations of the Raman spectra of C60 interacting with water molecules JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2005/08/15/ VL - 411 IS - 4-6 M3 - Article SP - 395 EP - 398 SN - 00092614 AB - Abstract: Molecular mechanics and semi-empirical quantum mechanical calculations were conducted to investigate the effect of water interaction on the Raman spectra of C60 fullerene. It was found that the frequency of the fullerene surface modes Hg(7), A2g, and Hg(8) shifts to higher wavenumbers as the number of interacting water molecules increased. The Raman peak shift was non-linear and showed an intermediate plateau related to structural changes in the surrounding water molecules. The average C–C bond length was found to be essentially constant within 0.002Å, indicating constant volume for the fullerene molecule. The current results confirm the suitability of C60 in applications as nanosensor to investigate liquid structures and transitions. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN effect KW - LIGHT -- Scattering KW - FULLERENES KW - CARBON N1 - Accession Number: 18163185; Amer, Maher S. 1; Email Address: maher.amer@wright.edu Elliott, James A. 1 Maguire, John F. 2 Windle, Allan H. 1; Affiliation: 1: Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB23QZ, UK 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, OH 45433, USA; Source Info: Aug2005, Vol. 411 Issue 4-6, p395; Subject Term: RAMAN effect; Subject Term: LIGHT -- Scattering; Subject Term: FULLERENES; Subject Term: CARBON; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.cplett.2005.06.057 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18163185&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wallace, William H. AU - Bushway, Karen E. AU - Miller, Susan D. AU - Delcomyn, Carrie A. AU - Renard, Jean J. AU - Henley, Michael V. T1 - Use of In Situ-Generated Dimethyldioxirane for Inactivation of Biological Agents. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2005/08/15/ VL - 39 IS - 16 M3 - Article SP - 6288 EP - 6292 SN - 0013936X AB - Dimethyldioxirane (DMDO), generated in situ by adding acetone to an aqueous solution containing potassium peroxymonosulfate (Oxone) at neutral pH, was investigated for inactivation of biological warfare agent simulants. The DMDO solution inactivated bacterial spores, fungal spores, vegetative bacterial cells, viruses, and protein by 7 orders of magnitude in less than 10 mm. The kill rates of DMDO were more pronounced when compared to kill rates of buffered Oxone alone. Conditions for the use of DMDO as a biological decontaminant were optimized by evaluating the effects of age and temperature on open systems. DMDO effectiveness was compared to that of current decontaminant solutions such as DS2 (used by the U.S. military), bleach, and hydrogen peroxide and was shown to be superior in achieving a 7-log kill of Bacillus atrophaeus, a Bacillus anthracis spore simulant. The results demonstrate the potential for DMDO to fill the need for a noncorrosive, nontoxic, and environmentally safe decontaminant. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOLOGICAL warfare KW - ACETONE KW - BACTERIAL spores KW - CELLS KW - POTASSIUM compounds KW - UNITED States N1 - Accession Number: 18027081; Wallace, William H. 1 Bushway, Karen E. 1 Miller, Susan D. 1 Delcomyn, Carrie A. 1 Renard, Jean J. 1 Henley, Michael V. 2; Email Address: mike.henley@tyndall.af.mil; Affiliation: 1: Applied Research Associates, Inc.. 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, 139 Barnes Drive, Suite 2, Tyndall Air Force Base, Florida 32403.; Source Info: 8/15/2005, Vol. 39 Issue 16, p6288; Subject Term: BIOLOGICAL warfare; Subject Term: ACETONE; Subject Term: BACTERIAL spores; Subject Term: CELLS; Subject Term: POTASSIUM compounds; Subject Term: UNITED States; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 212391 Potash, Soda, and Borate Mineral Mining; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18027081&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Altshuler, Edward E. AU - O'Donnell, Terry H. AU - Yaghjian, Arthur D. AU - Best, Steven R. T1 - A Monopole Superdirective Array. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2005/08/15/Aug2005 Part 2 VL - 53 IS - 8 M3 - Article SP - 2653 EP - 2661 SN - 0018926X AB - In principle, the end-fire directivity of a linear periodic array of N isotropic radiators can approach N² as the spacing between elements decreases, provided the magnitude and phase of the in put excitations are properly chosen. Thus, the directivity of a two-element array of isotropic radiators would approach a value of four, that is, 6 dB higher than that of a single isotropic radiator. We have conducted a theoretical, computational, and experimental study for a two-element superdirective array of resonant monopoles. In agreement with the theoretical and computational curves, the measured gain of the monopole array does indeed continually increase with decreasing spacing of the monopoles, provided the relative magnitudes and phases are maintained. However, for very small separation, maximum achievable gain is not reached due to the presence of ohmic loss. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONOPOLE antennas KW - ANTENNAS (Electronics) KW - RADIATORS KW - STEAM heating KW - RADIATION KW - ELECTRONIC apparatus & appliances KW - Antennas KW - array KW - monopole KW - resonance KW - superdirectivity N1 - Accession Number: 17967697; Altshuler, Edward E. 1; Email Address: edward.altshuler@hanscom.af.mil O'Donnell, Terry H. 1 Yaghjian, Arthur D. 1 Best, Steven R. 1; Affiliation: 1: Air Force Research Laboratory, Hanscom AF.B, MA 01731 USA.; Source Info: Aug2005 Part 2, Vol. 53 Issue 8, p2653; Subject Term: MONOPOLE antennas; Subject Term: ANTENNAS (Electronics); Subject Term: RADIATORS; Subject Term: STEAM heating; Subject Term: RADIATION; Subject Term: ELECTRONIC apparatus & appliances; Author-Supplied Keyword: Antennas; Author-Supplied Keyword: array; Author-Supplied Keyword: monopole; Author-Supplied Keyword: resonance; Author-Supplied Keyword: superdirectivity; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 333416 Heating equipment and commercial refrigeration equipment manufacturing; NAICS/Industry Codes: 333414 Heating Equipment (except Warm Air Furnaces) Manufacturing; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TAP.2005.851810 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17967697&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lacy, S. L. AU - Bernstein, D. S. T1 - Subspace identification for non-linear systems with measured-input non-linearities. JO - International Journal of Control JF - International Journal of Control Y1 - 2005/08/15/ VL - 78 IS - 12 M3 - Article SP - 906 EP - 926 SN - 00207179 AB - This paper uses subspace methods to identify a class of multi-input multi-output discrete-time non-linear time-varying systems. Specifically, we identify systems that are non-linear in measured data and linear in unmeasured states. Numerical examples are presented to demonstrate the efficacy of the method. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Control is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR systems KW - SYSTEMS theory KW - CONTROL theory (Mathematics) KW - LINEAR time invariant systems KW - NUMERICAL analysis KW - MATHEMATICAL analysis N1 - Accession Number: 17718166; Lacy, S. L. 1; Email Address: seth.lacy@kirtland.af.mil Bernstein, D. S. 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB NM 87117 2: Aerospace Engineering Department, University of Michigan, Ann Arbor MI 48109; Source Info: 8/15/2005, Vol. 78 Issue 12, p906; Subject Term: NONLINEAR systems; Subject Term: SYSTEMS theory; Subject Term: CONTROL theory (Mathematics); Subject Term: LINEAR time invariant systems; Subject Term: NUMERICAL analysis; Subject Term: MATHEMATICAL analysis; Number of Pages: 21p; Document Type: Article L3 - 10.1080/00207170500214095 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17718166&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ongstad, A. P. AU - Kaspi, R. AU - Tilton, M. L. AU - Chavez, J. R. AU - Dente, G. C. T1 - Performance comparison of optically pumped type-II midinfrared lasers. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2005/08/15/ VL - 98 IS - 4 M3 - Article SP - 043108 PB - American Institute of Physics SN - 00218979 AB - We report a comparative study on the performance of three optically pumped, type-II quantum well lasers with differing quantum well (QW) confinement. One of the active regions emphasized hole confinement, another emphasized electron confinement, while the third incorporated both electron and hole confinements. In all cases the wells were inserted in a thick InxGa1-xAsySb1-y waveguide/absorber region. The lasing wavelengths at 84 K were 2.26, 3.44, and 2.37 μm, respectively. The maximum peak output powers and differential quantum efficiencies η at 84 K were similar for the hole well and W lasers (≈13 W,η≈0.55), but significantly reduced in the electron-well-only laser (2.3 W,η=0.14). Waveguide loss measurements via the traditional quantum efficiency versus cavity length method and by a Hakki-Paoli method revealed that all three lasers had low waveguide loss that either increased slowly or not at all with increasing temperature. However, the laser’s internal efficiency, ηi, showed a linear decline with increasing temperature, with the ηi of the electron-well-only laser significantly less than the other two. The data suggest that for antimonide-based type-II designs, strong hole confinement is essential for improved performance. The data further suggest that it is hole leakage from the QW and/or hole dilution that is largely responsible for the degradation in laser performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - NONLINEAR optics KW - OPTICS KW - OPTOELECTRONIC devices KW - QUANTUM wells KW - WAVEGUIDES N1 - Accession Number: 18332603; Ongstad, A. P. 1; Email Address: andrew.ongstad@kirtland.af.mil Kaspi, R. 1 Tilton, M. L. 2 Chavez, J. R. 2 Dente, G. C. 3; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland Air Force Base (AFB), Albuquerque, New Mexico 87117 2: Boeing Defense and Space Group, Albuquerque, New Mexico 87106 3: GCD Associates, Albuquerque, New Mexico 87110; Source Info: 8/15/2005, Vol. 98 Issue 4, p043108; Subject Term: LASERS; Subject Term: NONLINEAR optics; Subject Term: OPTICS; Subject Term: OPTOELECTRONIC devices; Subject Term: QUANTUM wells; Subject Term: WAVEGUIDES; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 7p; Illustrations: 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1063/1.2010627 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18332603&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jianyong Yang AU - Brown, Gail J. AU - Dutta, Mitra AU - Stroscio, Michael A. T1 - Photon absorption in the Restrahlen band of thin films of GaN and AlN: Two phonon effects. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2005/08/15/ VL - 98 IS - 4 M3 - Article SP - 043517 PB - American Institute of Physics SN - 00218979 AB - Würtzite semiconductors exhibit strong carrier-phonon coupling as well as strong Restrahlen-related absorption of radiation due to the interaction with optical phonons. For the GaN and AlN würtzites studied here, the optical phonon frequencies fall in the infrared region. With the transverse-optical phonon frequency ωt, and longitudinal-optical phonon frequency ωl, when light with frequencies ωt<ω<ωl is incident on a GaN or AlN film, the resonance with optical phonons will lead to strong absorption. In this paper, these effects are modeled and studied experimentally. Our studies show that the absorption is so strong that it is still significant even when the sample thickness is reduced to the submicron level. It is also found experimentally and theoretically that, not only the first harmonic, but also the second harmonic of the phonon frequency leads to strong absorption. Theoretical comparisons with experimental data and predicted transmission versus the energy of the incident light for different film thicknesses are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - SOLID state electronics KW - SURFACES (Technology) KW - PHONONS KW - LATTICE dynamics N1 - Accession Number: 18332584; Jianyong Yang 1 Brown, Gail J. 2 Dutta, Mitra 1,3 Stroscio, Michael A. 1,3,4; Email Address: stroscio@uic.edu; Affiliation: 1: Electrical and Computer Engineering Department, University of Illinois at Chicago, Chicago 60607 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio 45433 3: Physics Department, University of Illinois at Chicago, Chicago 60607 4: Bioengineering Department, University of Illinois at Chicago, Chicago 60607; Source Info: 8/15/2005, Vol. 98 Issue 4, p043517; Subject Term: THIN films; Subject Term: SOLID state electronics; Subject Term: SURFACES (Technology); Subject Term: PHONONS; Subject Term: LATTICE dynamics; Number of Pages: 5p; Illustrations: 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1063/1.2034648 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18332584&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cawkwell, Marc J. AU - Nguyen-Manh, Duc AU - Woodward, Christopher AU - Pettifor, David G. AU - Vitek, Vaclav T1 - Origin of Brittle Cleavage in Iridium. JO - Science JF - Science Y1 - 2005/08/12/ VL - 309 IS - 5737 M3 - Article SP - 1059 EP - 1062 SN - 00368075 AB - Iridium is unique among the face-centered cubic metals in that it undergoes brittle cleavage after a period of plastic deformation under tensile stress. Atomistic simulation using a quantum-mechanically derived bond-order potential shows that in iridium, two core structures for the screw dislocation are possible: a glissile planar core and a metastable nonplanar core. Transformation between the two core structures is athermal and leads to exceptionally high rates of cross slip during plastic deformation. Associated with this athermal cross slip is an exponential increase in the dislocation density and strong work hardening from which brittle cleavage is a natural consequence. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IRIDIUM KW - SCISSION (Chemistry) KW - METALLURGY KW - DEFORMATIONS (Mechanics) KW - QUANTUM theory KW - PLASTICS N1 - Accession Number: 17995367; Cawkwell, Marc J. 1; Email Address: cawkwell@seas.upenn.edu Nguyen-Manh, Duc 2 Woodward, Christopher 3,4 Pettifor, David G. 5 Vitek, Vaclav 1; Affiliation: 1: Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, PA 19104-6202, USA. 2: European Atomic Energy Community/UK Atomic Energy Authority (EURATOM/UKAEA) Fusion Association, Culham Science Centre, Abingdon, OX14 3DB, UK. 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7817, USA. 4: Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208-3108, USA. 5: Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK.; Source Info: 8/12/2005, Vol. 309 Issue 5737, p1059; Subject Term: IRIDIUM; Subject Term: SCISSION (Chemistry); Subject Term: METALLURGY; Subject Term: DEFORMATIONS (Mechanics); Subject Term: QUANTUM theory; Subject Term: PLASTICS; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 326199 All Other Plastics Product Manufacturing; NAICS/Industry Codes: 424610 Plastics Materials and Basic Forms and Shapes Merchant Wholesalers; NAICS/Industry Codes: 326198 All other plastic product manufacturing; NAICS/Industry Codes: 326121 Unlaminated Plastics Profile Shape Manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 4p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article; Full Text Word Count: 2877 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17995367&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schmidt AU - M. W. AU - Gordon AU - M. S. AU - Boatz AU - J. A. T1 - Triazolium-Based Energetic Ionic Liquids. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2005/08/08/ VL - 109 IS - 32 M3 - Article SP - 7285 EP - 7295 SN - 10895639 AB - The energetic ionic liquids formed by the 1,2,4-triazolium cation family and dinitramide anion are investigated by ab initio quantum chemistry calculations, to address the following questions:  How does substitution at the triazolium ring's nitrogen atoms affect its heat of formation, and its charge delocalization? What kind of ion dimer structures might exist? And, do deprotonation reactions occur, as a possible first step in the decomposition of these materials? [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANIONS KW - QUANTUM chemistry KW - POLYWATER KW - THERMODYNAMICS N1 - Accession Number: 20704307; Schmidt M. W. 1 Gordon M. S. 1 Boatz J. A. 1; Affiliation: 1: Department of Chemistry, Iowa State University, Ames, Iowa 50011, and Space and Missile Propulsion Division, Air Force Research Laboratory, 10 East Saturn Blvd., Edwards AFB, California 93524; Source Info: Aug2005, Vol. 109 Issue 32, p7285; Subject Term: ANIONS; Subject Term: QUANTUM chemistry; Subject Term: POLYWATER; Subject Term: THERMODYNAMICS; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20704307&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Subramanyam, Guru AU - Heckman, Emily AU - Grote, James AU - Hopkins, Frank AU - Neidhard, Robert AU - Nykiel, Edward T1 - Microwave dielectric properties of marine DNA based polymers. JO - Microwave & Optical Technology Letters JF - Microwave & Optical Technology Letters Y1 - 2005/08/05/ VL - 46 IS - 3 M3 - Article SP - 278 EP - 282 SN - 08952477 AB - Deoxyribonucleic acid (DNA)-based polymer thin-films are characterized at microwave frequencies. The dielectric properties of the films are extracted from comparison of the propagation constants of the co-planar waveguide (CPW) lines on bare MgO substrates and the DNA-based films on MgO substrates. The insertion loss introduced by an undoped DNA-based polymer film is only 0.1 dB at 10 GHz and 0.5 dB at 30 GHz. A red-dye-doped DNA polymer film exhibited higher losses. The relative dielectric constant of the undoped DNA-based film averages to 4 at microwave frequencies, and the loss-tangent is below 0.1 up to 30 GHz. The dielectric properties of a 5% red-dye-doped DNA polymer film is compared to that of the pure DNA film. The DR1 doped DNA film exhibits 0.4-dB higher loss at 10 GHz and 0.9-dB higher loss at 30 GHz. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 46: 278–282, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20965 [ABSTRACT FROM AUTHOR] AB - Copyright of Microwave & Optical Technology Letters is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVES KW - DIELECTRICS KW - POLYMERS KW - WAVEGUIDES KW - ELECTRIC waves KW - coplanar waveguide KW - microwave dielectric properties KW - polymers N1 - Accession Number: 17358805; Subramanyam, Guru 1 Heckman, Emily 1 Grote, James 2 Hopkins, Frank 2 Neidhard, Robert 2 Nykiel, Edward 2; Affiliation: 1: Dept. of Electrical & Computer Eng., University of Dayton, 300 College Park, Dayton, OH 45469 2: Air Force Research Laboratory, WPAFB, Dayton, OH 45433; Source Info: 8/5/2005, Vol. 46 Issue 3, p278; Subject Term: MICROWAVES; Subject Term: DIELECTRICS; Subject Term: POLYMERS; Subject Term: WAVEGUIDES; Subject Term: ELECTRIC waves; Author-Supplied Keyword: coplanar waveguide; Author-Supplied Keyword: microwave dielectric properties; Author-Supplied Keyword: polymers; Number of Pages: 5p; Illustrations: 1 Diagram, 9 Graphs; Document Type: Article L3 - 10.1002/mop.20965 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17358805&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fournier, Diane AU - Trott, Sandra AU - Hawari, Jalal AU - Spain, Jim T1 - Metabolism of the Aliphatic Nitramine 4-Nitro-2,4-Diazabutanal by Methylobacterium sp. Strain JS178. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2005/08// VL - 71 IS - 8 M3 - Article SP - 4199 EP - 4202 SN - 00992240 AB - The aliphatic nitramine 4-nitro-2,4-diazabutanal (NDAB; C2H5N3O3) is a ring cleavage metabolite that accumulates during the aerobic degradation of the energetic compound hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) by various Rhodococcus spp. NDAB is also produced during the alkaline hydrolysis of either RDX or octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) and during the photolysis of RDX. Traces of NDAB were observed in a soil sampled from an ammunition-manufacturing facility contaminated with both HMX and RDX, suggesting natural attenuation. In this study, we report the isolation of a soil bacterium that is able to degrade NDAB under aerobic conditions. The isolate is a pink-pigmented facultative methylotroph affiliated with the genus Methylobacterium. The strain, named Methylobacterium sp. strain JS178, degrades NDAB as a sole nitrogen source, with concomitant growth and formation of 1 molar equivalent of nitrous oxide (N2O). Comparison of the growth yield of strain JS178 grown on NDAB, nitrite (NO2-), or ammonium (NH4+) as a nitrogen source revealed that 1 N equivalent is assimilated from each mole of NDAB, which completes the nitrogen mass balance. In radiotracer experiments, strain JS178 mineralized 1 C of the [14C]NDAB produced in situ from [14C]RDX by Rhodococcus sp. strain DN22. Studies on the regulation of NOAB degradation indicated that allantoin, an intermediate in the purine catabolic pathway and a central molecule in the storage and transport of nitrogen in plants, up-regulated the enzyme(s) involved in the degradation of the nitramine. The results reveal the potential for the sequential participation of rhodococci and methylobacteria to effect the complete degradation of RDX. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NITROAMINES KW - METABOLISM KW - METHYLOMONADACEAE KW - METHYLOBACTERIUM KW - HYDROLYSIS KW - NITROGEN oxides N1 - Accession Number: 17968835; Fournier, Diane 1 Trott, Sandra 2,3 Hawari, Jalal 1; Email Address: jalal.hawari@cnrc-nrc.gc.ca Spain, Jim 4; Affiliation: 1: Biotechnology Research Institute, National Research Council of Canada, Montreal, Quebec H4P 2R2, Canada 2: U.S. Air Force Research Laboratory, Tyndall Air Force Base, Florida 32403 3: Center for Cellular Dynamics, Wright State University, Dayton, OH 45435 4: Department of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0512; Source Info: Aug2005, Vol. 71 Issue 8, p4199; Subject Term: NITROAMINES; Subject Term: METABOLISM; Subject Term: METHYLOMONADACEAE; Subject Term: METHYLOBACTERIUM; Subject Term: HYDROLYSIS; Subject Term: NITROGEN oxides; Number of Pages: 4p; Document Type: Article L3 - 10.1128/AEM.71.8.4199-4202.2005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17968835&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lyons, K.M. AU - Watson, K.A. AU - Carter, C.D. AU - Donbar, J.M. T1 - On flame holes and local extinction in lifted-jet diffusion flames JO - Combustion & Flame JF - Combustion & Flame Y1 - 2005/08// VL - 142 IS - 3 M3 - Article SP - 308 EP - 313 SN - 00102180 N1 - Accession Number: 18152684; Lyons, K.M. 1; Email Address: lyons@eos.ncsu.edu Watson, K.A. 2 Carter, C.D. 3 Donbar, J.M. 3; Affiliation: 1: Department of Mechanical and Aerospace Engineering, North Carolina State University, Box 7910, Raleigh, NC 27695-7910, USA 2: Department of Mechanical Engineering, University of the Pacific, Stockton, CA 95211, USA 3: Air Force Research Laboratory, AFRL/PRA, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Aug2005, Vol. 142 Issue 3, p308; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.combustflame.2005.04.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18152684&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nickerson, Seth AU - Mayes, J. Steven AU - Welsh, Jeffry S. T1 - Multi-continuum analysis of thermally induced matrix cracking JO - Engineering Fracture Mechanics JF - Engineering Fracture Mechanics Y1 - 2005/08// VL - 72 IS - 12 M3 - Article SP - 1993 EP - 2008 SN - 00137944 AB - Abstract: Matrix micro-cracking due to thermal loading is a major concern in composite cryogenic tanks because it presents permeation paths for the stored fluids and gases. Accurate prediction of composite damage due to micro-crack initiation is thus an important aspect of tank analysis and design. In the research presented, failure criteria are applied at both the composite (macro-) and constituent (micro-) scale in an effort to assess the most effective analysis techniques for predicting composite damage. Constituent scale information is developed using multi-continuum theory, a classic strain decomposition approach. Numerical predictions are correlated against experimental results. [Copyright &y& Elsevier] AB - Copyright of Engineering Fracture Mechanics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUID mechanics KW - NUMERICAL analysis KW - PRESSURE vessels KW - MECHANICS (Physics) KW - Damage mechanics KW - Failure criterion KW - Finite element analysis (FEA) KW - Micro-structure KW - Strength N1 - Accession Number: 17812250; Nickerson, Seth 1 Mayes, J. Steven 1; Email Address: mayesjs@alfred.edu Welsh, Jeffry S. 2; Affiliation: 1: Mechanical Engineering Program, Alfred University, Alfred, NY 14802, USA 2: Air Force Research Laboratory, VSSV, Kirtland AFB, NM, USA; Source Info: Aug2005, Vol. 72 Issue 12, p1993; Subject Term: FLUID mechanics; Subject Term: NUMERICAL analysis; Subject Term: PRESSURE vessels; Subject Term: MECHANICS (Physics); Author-Supplied Keyword: Damage mechanics; Author-Supplied Keyword: Failure criterion; Author-Supplied Keyword: Finite element analysis (FEA); Author-Supplied Keyword: Micro-structure; Author-Supplied Keyword: Strength; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.engfracmech.2004.11.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17812250&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Steyskal, Hans AU - Ramprecht, Jorgen AU - Holter, Henrik T1 - Spiral Elements for Broad-Band Phased Arrays. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2005/08//Aug2005 Part 1 VL - 53 IS - 8 M3 - Article SP - 2558 EP - 2562 SN - 0018926X AB - In this paper, we present a numerical analysis of an infinite periodic array of planar spiral elements with octave bandwidth. For off-broadside scan the array is found to exhibit very narrow resonances, which are independent of scan angle. They occur when the spiral arms are multiples of half a wavelength, in which case the current forms a high amplitude standing wave along the spiral arms. The resonances are conveniently suppressed by making the arms unequally long. We also discuss the equivalent 3-port for this nonsymmetrical array element and evaluate the element polarization performance. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNA arrays KW - ANTENNAS (Electronics) KW - NUMERICAL analysis KW - DATA transmission systems KW - DIGITAL communications KW - BROADBAND communication systems KW - Broadband arrays KW - phased arrays KW - spiral antennas. N1 - Accession Number: 17980795; Steyskal, Hans 1; Email Address: hans.steyskal@hanscom.af.mil Ramprecht, Jorgen 2 Holter, Henrik 3; Affiliation: 1: Air Force Research Laboratory, Hanscom AFB, MA 01730 USA. 2: Department of Electromagnetic Theory, Royal Institute of Technology, SE-10044 Stockholm, Sweden. 3: Saab Bofors Dynamics AB, SE-17588 Jarfaila, Sweden.; Source Info: Aug2005 Part 1, Vol. 53 Issue 8, p2558; Subject Term: ANTENNA arrays; Subject Term: ANTENNAS (Electronics); Subject Term: NUMERICAL analysis; Subject Term: DATA transmission systems; Subject Term: DIGITAL communications; Subject Term: BROADBAND communication systems; Author-Supplied Keyword: Broadband arrays; Author-Supplied Keyword: phased arrays; Author-Supplied Keyword: spiral antennas.; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TAP.2005.852309 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17980795&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parco, James E. AU - Rapoport, Amnon AU - Amaldoss, Wilfred T1 - Two-stage contests with budget constraints: An experimental study JO - Journal of Mathematical Psychology JF - Journal of Mathematical Psychology Y1 - 2005/08// VL - 49 IS - 4 M3 - Article SP - 320 EP - 338 SN - 00222496 AB - Abstract: We report the results of an experiment on two-stage contests with budget-constrained agents competing to win an exogenously determined prize. In stage 1, agents first compete within their own groups by expending resources, and then in stage 2 the winners of each group compete with one another to win the prize by expending additional resources subject to the budget constraint. Winners in each stage are determined by Tullock''s proportional contest success function. We present the subgame perfect equilibrium solution for this model, derive predictions for our experiment, and then test them experimentally. In agreement with previous experimental research on single-stage contests, the equilibrium model is flatly rejected due to over-expenditure in stage 1. A descriptive model that extends the equilibrium solution by allowing for (1) non-pecuniary utility of winning and (2) misperception of the probability of winning better accounts for some, but not all, of the behavioral regularities. Taking an alternative approach, we then turn to an adaptive learning model that accounts for several features of the dynamics of play but still significantly under-predicts the stage 1 expenditures. [Copyright &y& Elsevier] AB - Copyright of Journal of Mathematical Psychology is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONTESTS KW - AWARDS KW - EQUILIBRIUM KW - BUDGET KW - Contest KW - EWA KW - Experiment KW - Rent-seeking KW - Tournament KW - Two-stage N1 - Accession Number: 18195936; Parco, James E. 1; Email Address: james.parco@usafa.af.mil Rapoport, Amnon 2,3; Email Address: amnon@u.arizona.edu Amaldoss, Wilfred 4; Email Address: wilfred.amaldoss@mail.duke.edu; Affiliation: 1: United States Air Force Academy, Department of Management, 2354 Fairchild Dr., Ste 6H-126, Colorado Springs, CO 80840, USA 2: Department of Management and Policy, University of Arizona, Tucson, AZ 85721, USA 3: Hong Kong University of Science and Technology, Department of Economics, Kowloon, Hong Kong 4: Department of Marketing, Duke University, Durham, NC 27708, USA; Source Info: Aug2005, Vol. 49 Issue 4, p320; Subject Term: CONTESTS; Subject Term: AWARDS; Subject Term: EQUILIBRIUM; Subject Term: BUDGET; Author-Supplied Keyword: Contest; Author-Supplied Keyword: EWA; Author-Supplied Keyword: Experiment; Author-Supplied Keyword: Rent-seeking; Author-Supplied Keyword: Tournament; Author-Supplied Keyword: Two-stage; NAICS/Industry Codes: 921130 Public Finance Activities; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.jmp.2005.03.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18195936&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heidler, Jeanne T. T1 - The Seminole Wars: America's Longest Indian Conflict. JO - Journal of Southern History JF - Journal of Southern History Y1 - 2005/08// VL - 71 IS - 3 M3 - Book Review SP - 680 EP - 681 PB - Southern Historical Association SN - 00224642 AB - Reviews the book "The Seminole Wars: America's Longest Indian Conflict," by John Missall and Mary Lou Missall with foreword by Raymond Arsenault and Gary R. Mormino. KW - NATIVE Americans -- History KW - NONFICTION KW - MISSALL, John KW - MISSALL, Mary Lou KW - ARSENAULT, Raymond KW - MORMINO, Gary R. KW - SEMINOLE Wars: America's Longest Indian Conflict, The (Book) N1 - Accession Number: 17870701; Heidler, Jeanne T. 1; Affiliation: 1: United States Air Force Academy; Source Info: Aug2005, Vol. 71 Issue 3, p680; Subject Term: NATIVE Americans -- History; Subject Term: NONFICTION; Reviews & Products: SEMINOLE Wars: America's Longest Indian Conflict, The (Book); People: MISSALL, John; People: MISSALL, Mary Lou; People: ARSENAULT, Raymond; People: MORMINO, Gary R.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17870701&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davidson, James S. AU - Fisher, Jeff W. AU - Hammons, Michael I. AU - Porter, Jonathan R. AU - Dinan, Robert J. T1 - Failure Mechanisms of Polymer-Reinforced Concrete Masonry Walls Subjected to Blast. JO - Journal of Structural Engineering JF - Journal of Structural Engineering Y1 - 2005/08// VL - 131 IS - 8 M3 - Article SP - 1194 EP - 1205 PB - American Society of Civil Engineers SN - 07339445 AB - Recent terrorist attacks indicate the improvised explosive device as the choice terror tactic. Over the past decade, the U.S. Department of Defense has encouraged and sponsored research toward developing methods of reinforcing structures to protect building occupants from the effects of external explosion. The focus of wall reinforcement research has recently shifted from applying stiff fiber-reinforced composites to using lower-strength higher-elongation elastomeric polymers that can be easily applied to the wall interior. This paper presents recent efforts that have demonstrated an innovative use of thin-membrane elastomeric polymers to prevent breaching and collapse of unreinforced masonry walls subjected to blast. The complex array of failure mechanisms observed from recent explosive tests is discussed. Effects of structural and nonstructural parameters are described with the aid of finite-element simulations. Finally, the needs and direction of future blast reinforcement developments are outlined. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Structural Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRENGTH of materials KW - STRUCTURAL engineering KW - BLAST effect KW - ENGINEERING KW - TERRORISM KW - Blast loads KW - Concrete KW - Failures KW - Finite elements KW - Masonry KW - Polymers KW - reinforced KW - Terrorism N1 - Accession Number: 17636687; Davidson, James S. 1 Fisher, Jeff W. 2 Hammons, Michael I. 3 Porter, Jonathan R. 4 Dinan, Robert J. 4; Affiliation: 1: Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of Alabama at Birmingham, Birmingham, AL 35294 2: Senior Engineer, Applied Research Associates, Inc., P.O. Box 40128, Tyndall Air Force Base, FL 32403 3: Principal Engineer, Applied Research Associates, Inc., 5000 NW 27th Ct. Suite E, Gainesville, FL 32606 4: Senior Research Engineer, Air Force Research Laboratory, 139 Barnes Dr., Suite 2, Tyndall Air Force Base, FL 32403; Source Info: Aug2005, Vol. 131 Issue 8, p1194; Subject Term: STRENGTH of materials; Subject Term: STRUCTURAL engineering; Subject Term: BLAST effect; Subject Term: ENGINEERING; Subject Term: TERRORISM; Author-Supplied Keyword: Blast loads; Author-Supplied Keyword: Concrete; Author-Supplied Keyword: Failures; Author-Supplied Keyword: Finite elements; Author-Supplied Keyword: Masonry; Author-Supplied Keyword: Polymers; Author-Supplied Keyword: reinforced; Author-Supplied Keyword: Terrorism; Number of Pages: 12p; Document Type: Article L3 - 10.1061/(ASCE)0733-9445(2005)131:8(1194) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17636687&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Salim, H. AU - Dinan, R. AU - Shull, J. AU - Townsend, P. T. T1 - Shock Load Capacity of Concrete Expansion Anchoring Systems in Uncracked Concrete. JO - Journal of Structural Engineering JF - Journal of Structural Engineering Y1 - 2005/08// VL - 131 IS - 8 M3 - Article SP - 1206 EP - 1215 PB - American Society of Civil Engineers SN - 07339445 AB - Concrete anchoring systems are commonly used in blast resistant wall systems. These anchoring systems are often subjected to large tensile forces in a short time during an external blast event. Previous research has been conducted on anchoring systems to evaluate their response to cyclic and “shock” loads; however, the ultimate capacities of these systems were not determined, and tests were conducted at relatively slow loading rates. In this paper, testing has been performed to determine the ultimate capacity of various expansion anchors at high loading rates, which is characteristic of most blast events. Ultimately, concrete expansion anchors perform differently at high loading rates and some show improved ultimate performance. This paper will present the experimental findings and provide recommendations for anchor design under blast loads. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Structural Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONCRETE construction KW - BLAST effect KW - STRUCTURAL engineering KW - FOUNDATIONS (Engineering) KW - ENGINEERING design KW - STRUCTURAL analysis (Engineering) KW - Anchoring KW - Bearing capacity KW - Blast loads KW - Concrete KW - Cracking N1 - Accession Number: 17636694; Salim, H. 1 Dinan, R. 2 Shull, J. 3 Townsend, P. T. 4; Affiliation: 1: Assistant Professor, Dept. of Civil and Environmental Engineering, Univ. Missouri-Columbia, Columbia, MO 65211-2200 2: Senior Research Engineer, Air Force Research Laboratory, AFRL/MLQF, Tyndall Air Force Base, FL 32404 3: Structural Engineer, Black and Veatch Special Projects Corporation, Security Consulting and Design Services, 6601 College Blvd. (Q3), Overland Park, KS 66211 4: Research Structural Engineer, U.S. Army Corps of Engineers, Engineer Research and Development Center, Vicksburg, MS 39180; Source Info: Aug2005, Vol. 131 Issue 8, p1206; Subject Term: CONCRETE construction; Subject Term: BLAST effect; Subject Term: STRUCTURAL engineering; Subject Term: FOUNDATIONS (Engineering); Subject Term: ENGINEERING design; Subject Term: STRUCTURAL analysis (Engineering); Author-Supplied Keyword: Anchoring; Author-Supplied Keyword: Bearing capacity; Author-Supplied Keyword: Blast loads; Author-Supplied Keyword: Concrete; Author-Supplied Keyword: Cracking; NAICS/Industry Codes: 238110 Poured Concrete Foundation and Structure Contractors; NAICS/Industry Codes: 238990 All Other Specialty Trade Contractors; NAICS/Industry Codes: 541330 Engineering Services; NAICS/Industry Codes: 238910 Site Preparation Contractors; NAICS/Industry Codes: 238140 Masonry Contractors; NAICS/Industry Codes: 238130 Framing Contractors; Number of Pages: 10p; Document Type: Article L3 - 10.1061/(ASCE)0733-9445(2005)131:8(1206) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17636694&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Salim, H. AU - Dinan, R. AU - Townsend, P. T. T1 - Analysis and Experimental Evaluation of In-Fill Steel-Stud Wall Systems under Blast Loading. JO - Journal of Structural Engineering JF - Journal of Structural Engineering Y1 - 2005/08// VL - 131 IS - 8 M3 - Article SP - 1216 EP - 1225 PB - American Society of Civil Engineers SN - 07339445 AB - To be able to develop and advance blast-retrofit technologies, it is crucial first to be able to develop prediction methodologies and engineering design tools. Therefore, this paper will present the analytical modeling and experimental evaluation of steel-stud wall systems under blast loads. The results of the static full-scale wall tests, as well as the component tests, are used to evaluate the structural performance of the walls and provide recommendations for blast-retrofit systems. The analytical and experimental static results are used to develop the static resistance function for the wall systems, which is incorporated into a single degree of freedom dynamic model. The dynamic model will enable designers to predict the level of performance of the wall system under any explosion threat level. The analytical model conservatively predicted the measured field results with a maximum difference of 20%. The paper will discuss the performance of blast-retrofit wall systems under static and dynamic field tests simulating large vehicle bombs. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Structural Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IRON & steel building KW - BLAST effect KW - ENGINEERING design KW - STRUCTURAL analysis (Engineering) KW - STRUCTURAL engineering KW - STRUCTURAL dynamics KW - Blast loads KW - Design KW - Explosions KW - Steel KW - Studs KW - Walls N1 - Accession Number: 17636693; Salim, H. 1 Dinan, R. 2 Townsend, P. T. 3; Affiliation: 1: Assistant Professor, Dept. of Civil and Environmental Engineering, Univ. of Missouri-Columbia, Columbia, MO 65211 2: Senior Research Engineer, Air Force Research Laboratory, AFRL/MLQF, Tyndall Air Force Base, FL 32404 3: Research Structural Engineer, U.S. Army Corps of Engineers, Engineer Research and Development Center, Vicksburg, MS 39180; Source Info: Aug2005, Vol. 131 Issue 8, p1216; Subject Term: IRON & steel building; Subject Term: BLAST effect; Subject Term: ENGINEERING design; Subject Term: STRUCTURAL analysis (Engineering); Subject Term: STRUCTURAL engineering; Subject Term: STRUCTURAL dynamics; Author-Supplied Keyword: Blast loads; Author-Supplied Keyword: Design; Author-Supplied Keyword: Explosions; Author-Supplied Keyword: Steel; Author-Supplied Keyword: Studs; Author-Supplied Keyword: Walls; NAICS/Industry Codes: 541330 Engineering Services; Number of Pages: 10p; Document Type: Article L3 - 10.1061/(ASCE)0733-9445(2005)131:8(1216) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17636693&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wiff, D.R. AU - Lampert, W.V. AU - Eiting, C.J. AU - McDaniel, G.Y. AU - Glassford, K.M. T1 - Modeling rhenium metallization of a silicon-rich (001) 6H-SiC surface JO - Materials Science in Semiconductor Processing JF - Materials Science in Semiconductor Processing Y1 - 2005/08// VL - 8 IS - 4 M3 - Article SP - 497 EP - 501 SN - 13698001 AB - Abstract: Quantum mechanical CASTEP software calculations were performed using nickel and rhenium atom deposition onto cleaved surfaces (active, hydrogenated, and oxygenated). These calculations were performed without metal atoms and with metal atoms at selected positions (origin, a- and b-axis) in the unit cell. Binding energies for each of the metal atoms (nickel and rhenium) were calculated. Additionally, calculated energy bands with associated density-of-states and partial density-of-states were examined regarding the population of s, p, and d bonding characteristics. Nickel atom deposition onto silicon-rich surfaces tended to bond to the silicon atoms as well as the underlying carbon atoms. However, rhenium atom deposition showed bonding only to the silicon atoms. This was observed experimentally and is reported herein. Experimentally, the rhenium deposition surface is extremely smooth and has only Ohmic characteristics and low resistance. [Copyright &y& Elsevier] AB - Copyright of Materials Science in Semiconductor Processing is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RHENIUM alloys KW - ATOMS KW - NONMETALS KW - SILICON KW - Metallization KW - Modeling KW - Nickel KW - Ohmic contacts KW - Rhenium KW - Silicon carbide N1 - Accession Number: 17805501; Wiff, D.R. 1,2; Email Address: don.wiff@wrnms.com Lampert, W.V. 1,3 Eiting, C.J. 1,4 McDaniel, G.Y. 1,5 Glassford, K.M. 6; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/MLPS), Wright-Patterson AFB, OH 45433, USA 2: Western Reserve Nano-Micro Sensors, 1720 Daffodil Trail, Poland, OH 44514-5210, USA 3: US Army Research Office, P.O. Box 12211, Research Triangle Park, NC 27709, USA 4: Qynergy Corporation, 1636 Alameda Blvd, NW, Albuquerque, NM 87114, USA 5: ENSCO Inc., 4849 North Wickham Rd., Melbourne, FL 32940, USA 6: Accelrys Inc., 9685 Scranton Road, San Diego, CA 92121-3752, USA; Source Info: Aug2005, Vol. 8 Issue 4, p497; Subject Term: RHENIUM alloys; Subject Term: ATOMS; Subject Term: NONMETALS; Subject Term: SILICON; Author-Supplied Keyword: Metallization; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Nickel; Author-Supplied Keyword: Ohmic contacts; Author-Supplied Keyword: Rhenium; Author-Supplied Keyword: Silicon carbide; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.mssp.2004.07.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17805501&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anttonen, J.S.R. AU - King, P.I. AU - Beran, P.S. T1 - Applications of multi-POD to a pitching and plunging airfoil JO - Mathematical & Computer Modelling JF - Mathematical & Computer Modelling Y1 - 2005/08// VL - 42 IS - 3/4 M3 - Article SP - 245 EP - 259 SN - 08957177 AB - Abstract: Multi-POD is a new proper orthogonal decomposition (POD) based reduced order modeling (ROM) technique for modeling flows on deforming grids. Presented is the application of multi-POD to flow about a pitching and plunging airfoil. The multi-POD technique expands the parameter space in which POD is applied through selection of the best available ROM for a given set of grid deformations. For application to unconstrained pitching and plunging motion of an airfoil, multi-POD is shown to be effective when trained for forced grid motion, reducing the training requirements significantly. A three-orders of magnitude reduction in the number of degrees of freedom is also shown in the use of POD/ROM for the aeroelastic problem. [Copyright &y& Elsevier] AB - Copyright of Mathematical & Computer Modelling is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER simulation KW - SPECIFICATIONS KW - AEROFOILS KW - MATHEMATICAL models KW - Deforming grid KW - Proper orthogonal decomposition KW - Reduced order modeling N1 - Accession Number: 18780525; Anttonen, J.S.R. 1; Email Address: John.Anttonen@maxwell.af.mil King, P.I. 2; Email Address: Paul.King@AFIT.edu Beran, P.S. 3; Email Address: Philip.Beran@AFIT.edu; Affiliation: 1: Air Command and Staff College Maxwell AFB, FL, U.S.A. 2: Dpt. of Aeronautical and Astronautical Engineering Air Force Institute of Technology Wright-Patterson AFB, OH, U.S.A. 3: Air Vehicles Directorate Air Force Research Laboratory Wright-Patterson AFB, OH, U.S.A.; Source Info: Aug2005, Vol. 42 Issue 3/4, p245; Subject Term: COMPUTER simulation; Subject Term: SPECIFICATIONS; Subject Term: AEROFOILS; Subject Term: MATHEMATICAL models; Author-Supplied Keyword: Deforming grid; Author-Supplied Keyword: Proper orthogonal decomposition; Author-Supplied Keyword: Reduced order modeling; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.mcm.2005.06.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18780525&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - DeJoseph Jr., C. A. AU - Demidov, V. I. T1 - Diode calibration of a Langmuir probe system for measurement of electron energy distribution functions in a plasma. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2005/08// VL - 76 IS - 8 M3 - Article SP - 086105 PB - American Institute of Physics SN - 00346748 AB - It is shown that a simple circuit consisting of a semiconductor diode, a resistor, and a dc voltage source can model a narrow-energy group of electrons in a plasma for the purpose of calibration of a Langmuir probe. The calibration is appropriate when the probe is used for measurement of the electron energy distribution function (EEDF). This simple circuit allows real-time determination of sensitivity, energy resolution, and signal-to-noise ratio for probe measurements of the EEDF. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA frequencies KW - PARTICLES (Nuclear physics) KW - SEMICONDUCTORS KW - ELECTRONS KW - CATHODE rays KW - IONS N1 - Accession Number: 18505738; DeJoseph Jr., C. A. 1 Demidov, V. I. 2; Email Address: vladimir.demidov@mail.wvu.edu; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Dayton, Ohio 45433 2: UES, Inc., 4401 Dayton-Xenia Road, Dayton, Ohio 45432; Source Info: Aug2005, Vol. 76 Issue 8, p086105; Subject Term: PLASMA frequencies; Subject Term: PARTICLES (Nuclear physics); Subject Term: SEMICONDUCTORS; Subject Term: ELECTRONS; Subject Term: CATHODE rays; Subject Term: IONS; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1063/1.2006287 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18505738&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cui, Ningzhou AU - Hong, Lang AU - Layne, Jeffery R. T1 - A comparison of nonlinear filtering approaches with an application to ground target tracking JO - Signal Processing JF - Signal Processing Y1 - 2005/08// VL - 85 IS - 8 M3 - Article SP - 1469 EP - 1492 SN - 01651684 AB - Abstract: With an application to ground target tracking, two groups of nonlinear filtering approaches are compared in this paper: Gaussian approximation and Monte Carlo simulation. The former group, consisting of the extended Kalman filter (EKF), Gauss–Hermite filter (GHF) and unscented Kalman filter (UKF), approximates probability densities of nonlinear systems using either single or multiple points in a state space, while the latter group, being particle filters, estimates probability densities using random samples. There are two sources contributing to nonlinearity in the ground target tracking problem: terrain and road constrained kinematic modeling and polar coordinate sensing. When tracking ground maneuvering targets with multiple models, one faces another problem, i.e., non-Gaussianity. This paper also compares interacting multiple model (IMM)-based filters IMM-EKF, IMM-GHF and IMM-UKF with particle-based multiple model filters for their capability in handling the non-Gaussian problem. Simulation results show that: (1) all the filters achieve a comparable performance when tracking non-maneuvering ground targets; (2) particle-based multiple model filters are superior to IMM-based filters in maneuvering ground target tracking. [Copyright &y& Elsevier] AB - Copyright of Signal Processing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ESTIMATION theory KW - MONTE Carlo method KW - PREDICTION theory KW - STOCHASTIC processes KW - Estimation KW - Gaussian approximation KW - Ground target tracking KW - Monte Carlo simulation KW - Nonlinear filtering N1 - Accession Number: 17915877; Cui, Ningzhou 1 Hong, Lang 1; Email Address: lhong@cs.wright.edu Layne, Jeffery R. 2; Affiliation: 1: Department of Electrical Engineering, Wright State University, Dayton, OH 45435, USA 2: SNAT, Sensors Directorate, Air Force Research Laboratory, WPAFB, OH 45433, USA; Source Info: Aug2005, Vol. 85 Issue 8, p1469; Subject Term: ESTIMATION theory; Subject Term: MONTE Carlo method; Subject Term: PREDICTION theory; Subject Term: STOCHASTIC processes; Author-Supplied Keyword: Estimation; Author-Supplied Keyword: Gaussian approximation; Author-Supplied Keyword: Ground target tracking; Author-Supplied Keyword: Monte Carlo simulation; Author-Supplied Keyword: Nonlinear filtering; Number of Pages: 24p; Document Type: Article L3 - 10.1016/j.sigpro.2005.01.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17915877&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hart, Kenneth A. AU - Steenburgh, W. James AU - Onton, Daryl J. T1 - Model Forecast Improvements with Decreased Horizontal Grid Spacing over Finescale Intermountain Orography during the 2002 Olympic Winter Games. JO - Weather & Forecasting JF - Weather & Forecasting Y1 - 2005/08// VL - 20 IS - 4 M3 - Article SP - 558 EP - 576 PB - American Meteorological Society SN - 08828156 AB - Forecasts produced for the 2002 Olympic and Paralympic Winter Games (23 January–25 March 2002) by a multiply nested version of the fifth-generation Pennsylvania State University–National Center for Atmospheric Research (PSU–NCAR) Mesoscale Model (MM5) are examined to determine if decreasing horizontal grid spacing to 4 km improves forecast accuracy over the finescale topography of the Intermountain West. The verification is based on high-density observations collected by the MesoWest cooperative networks, including approximately 200 wind and temperature sites and 100 precipitation sites across northern Utah. Wind and precipitation forecasts produced by the 4-km MM5 domain were more accurate (based on traditional measures) than those of its parent 12-km domain. The most significant improvements in wind speed forecasts occurred at night in valleys and lowland locations where the topography of the 4-km domain produced more accurate nocturnal flows. Wind direction forecast improvements were most substantial at mountain sites where the better topographic resolution of the 4-km domain more accurately reflected the exposure of these locations to the free atmosphere. The 4-km domain also produced quantitative precipitation forecasts that were either equally (small events) or more (large events) accurate than the 12-km domain. Precipitation bias errors varied substantially between the two domains since the representation of the region’s narrow, steeply sloped, basin-and-range topography improved dramatically at 4-km grid spacing. Curiously, the overall accuracy of temperature forecasts by the 4-km domain was not significantly better than that of the 12-km domain. This was due to an inability of the MM5 to properly simulate nocturnal and persistent cold pools within mountain valleys and the lowlands upstream of the Wasatch Mountains. Paradoxically, the added resolution of the 4-km domain, coupled with the failure of this version of the MM5 to fully capture the nocturnal and persistent cold pools, resulted in poorer skill scores. At upper elevations, which are typically above the cold pools, the 4-km domain was substantially more accurate. These results illustrate that decreasing horizontal grid spacing to less than 10 km does improve wind and precipitation forecasts over finescale Intermountain West topography. It is hypothesized that model improvements will ultimately enable the advantages of added model resolution to be fully realized for temperature forecasts over the Intermountain West. [ABSTRACT FROM AUTHOR] AB - Copyright of Weather & Forecasting is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WEATHER forecasting KW - GEOPHYSICAL prediction KW - ATMOSPHERE -- Research KW - WIND speed KW - LANDFORMS KW - PENNSYLVANIA N1 - Accession Number: 18317054; Hart, Kenneth A. 1,2,3; Email Address: kenneth.hart@usafa.af.mil Steenburgh, W. James 1 Onton, Daryl J. 1; Affiliation: 1: NOAA Cooperative Institute for Regional Prediction, and Department of Meteorology, University of Utah, Salt Lake City, Utah 2: Department of Economics and Geography, United States Air Force Academy, USAF Academy, Colorado 3: Dept. of Economics and Geography, United States Air Force Academy, Suite 6K110, 2354 Fairchild Dr., USAF Academy, CO 80840; Source Info: Aug2005, Vol. 20 Issue 4, p558; Subject Term: WEATHER forecasting; Subject Term: GEOPHYSICAL prediction; Subject Term: ATMOSPHERE -- Research; Subject Term: WIND speed; Subject Term: LANDFORMS; Subject Term: PENNSYLVANIA; NAICS/Industry Codes: 541990 All Other Professional, Scientific, and Technical Services; Number of Pages: 19p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18317054&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Suchalkin, S. AU - Shterengas, L. AU - Kisin, M. AU - Luryi, S. AU - Belenky, G. AU - Kaspi, R. AU - Ongstad, A. AU - Kim, J. G. AU - Martinelli, R. U. T1 - Mechanism of the temperature sensitivity of mid-infrared GaSb-based semiconductor lasers. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/07/25/ VL - 87 IS - 4 M3 - Article SP - 041102 PB - American Institute of Physics SN - 00036951 AB - The sources of temperature sensitivity of the threshold current in type-I and type-II mid-infrared semiconductor lasers are investigated. Measurements of the interband optical absorption allow direct comparison of the optical matrix elements in laser structures with type-I and type-II band alignments and prove that the difference in the optical matrix elements is insignificant for these two groups of structures. We show that thermally-induced hole escape from the active quantum wells strongly deteriorates the optical emission in both type heterostructures. Experiments show that the temperature decay of PL is generally stronger for type-II samples. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR lasers KW - INJECTION lasers KW - NONLINEAR optics KW - QUANTUM wells KW - SUPERLATTICES N1 - Accession Number: 17782618; Suchalkin, S. 1 Shterengas, L. 1 Kisin, M. 1 Luryi, S. 1 Belenky, G. 1 Kaspi, R. 2 Ongstad, A. 2 Kim, J. G. 3 Martinelli, R. U. 3; Affiliation: 1: Department of Electrical and Computer Engineering, SUNY at Stony Brook, New York 11794 2: Air Force Research Laboratory, Directed Energy Directorate, Advanced Tactical Lasers Systems Branch, AFRL/DELS, Kirtland AFB, Albuquerque, New Mexico 87117 3: Sarnoff Corporation, CN 5300, Princeton, New Jersey 08543-5300; Source Info: 7/25/2005, Vol. 87 Issue 4, p041102; Subject Term: SEMICONDUCTOR lasers; Subject Term: INJECTION lasers; Subject Term: NONLINEAR optics; Subject Term: QUANTUM wells; Subject Term: SUPERLATTICES; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.2001132 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17782618&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Woodward, C. T1 - First-principles simulations of dislocation cores JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2005/07/25/ VL - 400-401 M3 - Article SP - 59 EP - 67 SN - 09215093 AB - Abstract: In order to understand the “chemistry of deformation” an adequate description of the strain field near the center of dislocations (the core) is required. We review the development and current status of ab initio methods that have been used to model the core structures of dislocation in elemental refractory metals and intermetallic alloys. Methods employing flexible boundary conditions or dislocation dipoles allow for the direct simulation of dislocations while methods based on the Peierls–Nabarro approximation use the generalized stacking-fault energy to model the restoring force across the lattice discontinuity produced by the dislocation. This energy function can be derived from first-principles reference calculations. In this work we emphasis methods and their application to materials where plastic deformation is complex and Schmids law is violated. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISLOCATIONS in metals KW - HEAT resistant alloys KW - FORCING (Model theory) KW - METALLIC composites KW - BOUNDARY value problems KW - Dislocation cores KW - Dislocations KW - First-principles methods KW - Intermetallics KW - Refractory metals N1 - Accession Number: 18131998; Woodward, C. 1,2; Email Address: christopher.woodward@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, AFRL/MLLM, Wright-Patterson AFB, OH 45433-1894, USA 2: Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208-3108, USA; Source Info: Jul2005, Vol. 400-401, p59; Subject Term: DISLOCATIONS in metals; Subject Term: HEAT resistant alloys; Subject Term: FORCING (Model theory); Subject Term: METALLIC composites; Subject Term: BOUNDARY value problems; Author-Supplied Keyword: Dislocation cores; Author-Supplied Keyword: Dislocations; Author-Supplied Keyword: First-principles methods; Author-Supplied Keyword: Intermetallics; Author-Supplied Keyword: Refractory metals; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.msea.2005.03.039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18131998&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Choi, Y.S. AU - Dimiduk, D.M. AU - Uchic, M.D. AU - Parthasarathy, T.A. T1 - A crystallographic constitutive model for Ni3Al (L12) intermetallics JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2005/07/25/ VL - 400-401 M3 - Article SP - 256 EP - 259 SN - 09215093 AB - Abstract: A constitutive model was developed in order to capture the unique thermo-mechanical flow behavior of L12-structured Ni3(Al, X) alloys. This model utilized a framework for flow-stress partitioning, which was previously proposed by Ezz and Hirsch, and incorporated a model for exhaustion hardening proposed by Caillard. The simulation results well represent the major aspects of the thermo-mechanical flow behavior of Ni3(Al, X) alloys, such as a flow-stress anomaly, its strain dependence and a work-hardening rate anomaly. Selected limitations are discussed along with our current efforts toward extending the present model. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALLOYS KW - METALLIC composites KW - METAL crystals KW - INTERMETALLIC compounds KW - DISLOCATIONS in crystals KW - Constitutive model KW - Cross-slip locking KW - Exhaustion hardening KW - Ni3Al KW - Yield anomaly N1 - Accession Number: 18132040; Choi, Y.S. 1; Email Address: ychoi@ues.com Dimiduk, D.M. 2; Email Address: Dennis.Dimiduk@wpafb.af.mil Uchic, M.D. 2; Email Address: Michael.Uchic@wpafb.af.mil Parthasarathy, T.A. 1; Email Address: Triplicane.Parthasarathy@wpafb.af.mil; Affiliation: 1: UES, Inc. 4401 Dayton-Xenia Rd., Dayton, OH 45432-1894, USA 2: Air Force Research Laboratory, AFRL/MLLM, 2230 Tenth Street, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Jul2005, Vol. 400-401, p256; Subject Term: ALLOYS; Subject Term: METALLIC composites; Subject Term: METAL crystals; Subject Term: INTERMETALLIC compounds; Subject Term: DISLOCATIONS in crystals; Author-Supplied Keyword: Constitutive model; Author-Supplied Keyword: Cross-slip locking; Author-Supplied Keyword: Exhaustion hardening; Author-Supplied Keyword: Ni3Al; Author-Supplied Keyword: Yield anomaly; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.msea.2005.03.040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18132040&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Uchic, Michael D. AU - Dimiduk, Dennis M. T1 - A methodology to investigate size scale effects in crystalline plasticity using uniaxial compression testing JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2005/07/25/ VL - 400-401 M3 - Article SP - 268 EP - 278 SN - 09215093 AB - Abstract: A methodology for performing uniaxial compression tests on samples having micron-size dimensions is presented. Sample fabrication is accomplished using focused ion beam milling to create cylindrical samples of uniform cross-section that remain attached to the bulk substrate at one end. Once fabricated, samples are tested in uniaxial compression using a nanoindentation device outfitted with a flat tip, and a stress–strain curve is obtained. The methodology can be used to examine the plastic response of samples of different sizes that are from the same bulk material. In this manner, dimensional size effects at the micron scale can be explored for single crystals, using a readily interpretable test that minimizes imposed stretch and bending gradients. The methodology was applied to a single-crystal Ni superalloy and a transition from bulk-like to size-affected behavior was observed for samples 5μm in diameter and smaller. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT resistant alloys KW - BULK solids KW - ION bombardment KW - DEFORMATIONS (Mechanics) KW - Focused ion beam milling KW - Micro-compression testing KW - Nickel superalloys KW - Size scale effects N1 - Accession Number: 18132043; Uchic, Michael D.; Email Address: Michael.Uchic@wpafb.af.mil Dimiduk, Dennis M. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Jul2005, Vol. 400-401, p268; Subject Term: HEAT resistant alloys; Subject Term: BULK solids; Subject Term: ION bombardment; Subject Term: DEFORMATIONS (Mechanics); Author-Supplied Keyword: Focused ion beam milling; Author-Supplied Keyword: Micro-compression testing; Author-Supplied Keyword: Nickel superalloys; Author-Supplied Keyword: Size scale effects; NAICS/Industry Codes: 484232 Dry bulk materials trucking, long distance; NAICS/Industry Codes: 484222 Dry bulk materials trucking, local; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.msea.2005.03.082 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18132043&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kenney III, John W. AU - Boatz, Jerry A. AU - Terrill Vosbein, Heidi A. T1 - Theory of Monte Carlo simulations of the magnetic circular dichroism spectra of alkali metal/rare gas systems. JO - International Journal of Quantum Chemistry JF - International Journal of Quantum Chemistry Y1 - 2005/07/21/ VL - 103 IS - 6 M3 - Article SP - 854 EP - 865 SN - 00207608 AB - The history of magnetic circular dichroism (MCD) spectroscopy in the study of alkali metal/rare gas (M/Rg) cryogenic systems is reviewed in the context of developing a better understanding of alkali metal/hydrogen systems of current interest to the U.S. Air Force as enhanced-performance cryogenic rocket propellants. A new theory for simulating the MCD spectra of M/Rg systems is presented together with a careful discussion of the theory's implicit and explicit approximations and their implications. This theory uses a classical Monte Carlo (MC) simulation scheme to model the perturbing effects of the Rg environment on the 2S → 2P MCD-active transition of the M atom. The theory sets up the MC–MCD simulation as a 6 × 6 matrix eigenvalue/eigenvector problem in the 2P manifold in which are included the effects of M–Rg interactions, metal atom spin-orbit coupling in the 2P manifold, magnetic Zeeman perturbations of the 2S and 2P manifolds, Boltzmann temperature factors, and electric dipole transition moment integrals for left circularly polarized (LCP) and right circularly polarized (RCP) light. The theory may be applied to any type of trapping site of the host M in the guest Rg matrix; a single atom substitutional metal atom trapping site (one host Rg atom is replaced by one guest M atom) is modeled in this study for M = Na and Rg = Ar. Two temperature factors are used in these simulations; a lattice temperature to model the mobility of the Rg lattice and a magnetic temperature to model Boltzmann factors in the 2S ground manifold. The 6 × 6 eigenvalue/eigenvector problem is solved for a number of randomly generated and suitably averaged Rg configurations to yield the simulated MC-MCD spectrum for the single substitutional Na/Ar system. The MC–MCD simulations of Na/Ar give the characteristic triplet MCD spectrum with the correct Boltzmann temperature dependence. The simulated MC–MCD spectrum correctly inverts when the direction of the applied magnetic field is reversed. Addition of the LCP and RCP absorbances gives rise to a characteristic 2S → 2P triplet absorption feature. © 2005 Wiley Periodicals, Inc. Int J Quantum Chem, 2005 [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Quantum Chemistry is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC circular dichroism KW - ALKALI metals KW - NOBLE gases KW - LOW temperature engineering KW - MONTE Carlo method KW - OPTICAL polarization KW - ABSORPTION N1 - Accession Number: 21619471; Kenney III, John W. 1 Boatz, Jerry A. 2 Terrill Vosbein, Heidi A. 3; Email Address: terrill@nrlssc.navy.mil; Affiliation: 1: Chemical Physics Laboratory, Concordia University, 1530 Concordia West, Irvine, California 92612 2: Air Force Research Laboratory, Space and Missile Propulsion Division; AFRL/PRSP, 10 E. Saturn Blvd., Edwards AFB, California 93524 3: Naval Research Laboratory, Acoustic Simulation, Measurements and Tactics Branch, Code 7180, Bldg. 1005, Stennis Space Center, Mississippi 39529; Source Info: 2005, Vol. 103 Issue 6, p854; Subject Term: MAGNETIC circular dichroism; Subject Term: ALKALI metals; Subject Term: NOBLE gases; Subject Term: LOW temperature engineering; Subject Term: MONTE Carlo method; Subject Term: OPTICAL polarization; Subject Term: ABSORPTION; Number of Pages: 12p; Illustrations: 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1002/qua.20270 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21619471&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yang, Sang H. AU - Weeks, D.E. AU - Niday, T.A. T1 - Inelastic scattering matrix elements, cross sections and rate constants for transition B(2P1/2)+H2(j =0)↔B(2P3/2)+H2(j =0) JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2005/07/19/ VL - 410 IS - 4-6 M3 - Article SP - 316 EP - 320 SN - 00092614 AB - Abstract: The non-adiabatic wave packet collisions of B(2P1/2)+H2(j =0)↔B(2P3/2)+H2(j =0) were calculated using the time dependent Channel Packet Method to compute transition probabilities, cross sections and rate constants. While the H2 angular momentum j was fixed to 0, the total angular momentum of the system J, was varied from 1/2 to 153/2. The feature of the Stückelberg oscillation was shown in transition probabilities. The transition from B(2P3/2) to B(2P1/2) state was shown to be favored over the reverse process. The ratio of the computed rate constants was well compared with that of the analytic result obtained from the Boltzmann factor and the detailed balance. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVE packets KW - COLLISIONS (Nuclear physics) KW - PARTICLES (Nuclear physics) KW - ANGULAR momentum (Nuclear physics) N1 - Accession Number: 18132716; Yang, Sang H. 1; Email Address: sang.yang@wpafb.af.mil Weeks, D.E. 2 Niday, T.A. 2; Affiliation: 1: Air Force Research Laboratory, Material and Manufacturing Directorate, 2941 Hobson Street, Building 654, #338, WPAFB, OH 45433-7746, USA 2: Air Force Institute of Technology, WPAFB, OH 45433, USA; Source Info: Jul2005, Vol. 410 Issue 4-6, p316; Subject Term: WAVE packets; Subject Term: COLLISIONS (Nuclear physics); Subject Term: PARTICLES (Nuclear physics); Subject Term: ANGULAR momentum (Nuclear physics); Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.cplett.2005.04.035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18132716&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Look, D.C. AU - Fang, Z.-Q. AU - Claflin, B. T1 - Identification of donors, acceptors, and traps in bulk-like HVPE GaN JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2005/07/15/ VL - 281 IS - 1 M3 - Article SP - 143 EP - 150 SN - 00220248 AB - Abstract: The first GaN was grown by hydride vapor phase epitaxy (HVPE) more than 30 years ago, and now thick, large-area HVPE layers are being proposed as substrates for GaN devices. Temperature-dependent Hall-effect, photoluminescence (PL), secondary ion mass spectroscopy, and positron annihilation measurements by different groups over the last few years have identified the dominant donors in HVPE GaN as Si and O, and the dominant acceptor as the Ga vacancy. Another potential donor, the N vacancy VN, has been shown to have a larger activation energy (∼70meV) than that of Si and O (∼30meV), and thus to contribute little to the conductivity of almost any as-grown sample. However, VN is also an electron trap, with an effective activation energy of about 160meV. Several other traps appear regularly in HVPE GaN, and one such trap, at 1.0eV, may be associated with the N interstitial. However, a trap at 0.60eV is overall the most common trap in GaN grown by HVPE or any other method. We have recently found a correlation between the 0.60-eV trap and the well-known blue band, at 2.8eV, but unfortunately the blue band itself has not yet been positively identified. Usually, the 0.60-eV trap is isolated, whereas the 1.0-eV trap is often associated with dislocations. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM compounds KW - CRYSTAL growth KW - SPECTRUM analysis KW - POSITRON annihilation KW - 61.72.Ji KW - 61.72.Lk KW - A1. Defects KW - A1. Impurities KW - A1. Line defects KW - A3. Hydride vapor phase epitaxy KW - B1. Nitrides KW - B2. Semiconducting III–V materials N1 - Accession Number: 18095338; Look, D.C. 1,2; Email Address: David.Look@wpafb.af.mil Fang, Z.-Q. 1,2 Claflin, B. 1,2; Affiliation: 1: Semiconductor Research Center, Wright State University, 3640 Col. Glenn Hwy., Dayton, OH 45435, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Jul2005, Vol. 281 Issue 1, p143; Subject Term: GALLIUM compounds; Subject Term: CRYSTAL growth; Subject Term: SPECTRUM analysis; Subject Term: POSITRON annihilation; Author-Supplied Keyword: 61.72.Ji; Author-Supplied Keyword: 61.72.Lk; Author-Supplied Keyword: A1. Defects; Author-Supplied Keyword: A1. Impurities; Author-Supplied Keyword: A1. Line defects; Author-Supplied Keyword: A3. Hydride vapor phase epitaxy; Author-Supplied Keyword: B1. Nitrides; Author-Supplied Keyword: B2. Semiconducting III–V materials; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jcrysgro.2005.03.035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18095338&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hunton, D.E. AU - Viggiano, A.A. AU - Miller, T.M. AU - Ballenthin, J.O. AU - Reeves, J.M. AU - Wilson, J.C. AU - Lee, Shan-Hu AU - Anderson, B.E. AU - Brune, W.H. AU - Harder, H. AU - Simpas, J.B. AU - Oskarsson, N. T1 - In-situ aircraft observations of the 2000 Mt. Hekla volcanic cloud: Composition and chemical evolution in the Arctic lower stratosphere JO - Journal of Volcanology & Geothermal Research JF - Journal of Volcanology & Geothermal Research Y1 - 2005/07/15/ VL - 145 IS - 1/2 M3 - Article SP - 23 EP - 34 SN - 03770273 AB - Abstract: An instrumented NASA aircraft made comprehensive, in-situ measurements of trace gas concentrations and aerosol properties while flying through the eruptive cloud from Mt. Hekla in February and March, 2000. The data reveal novel aspects of the properties and evolution of the volcanic cloud in the lower arctic stratosphere. Thirty-five hours after the initial, sub-Plinian explosion on February 26, 2000, the aircraft intersected the cloud at an altitude of 11.3 km. SO2 concentrations in the cloud exceeded 1 ppmv, but no H2S was observed. Large HF concentrations of ∼50 ppbv were nearly equal to the HCl concentration, the same ratio of halogen species adsorbed on fallen ash. Although reactive nitrogen species are rarely detected in volcanic clouds, significant HNO3 concentrations of 3 ppbv above background were measured. A bimodal aerosol size distribution with total number densities exceeding 8000 particles/cm3 and total aerosol volume of 65 μm3/cm3 was observed. Approximately 1/3 of the fine aerosol particles were non-volatile (volcanic ash) and the remaining 2/3 were volatile (sulfate aerosol and ice). The volcanic cloud was highly structured with clearly delineated boundaries. In the 18-day period following the initial eruption, increases in SO2, sulfate aerosol, HCl, and HF volume mixing ratios were again detected. Analysis of the partitioning of sulfur between the gas and aerosol phases in these later cloud encounters shows that the rate of SO2 oxidation to sulfuric acid was broadly consistent with changing OH concentrations at the time of the vernal equinox. [Copyright &y& Elsevier] AB - Copyright of Journal of Volcanology & Geothermal Research is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR evolution KW - SULFURIC acid KW - SPHERICAL astronomy KW - ATTENTION KW - aerosol KW - in-situ measurements KW - SO2 oxidation kinetics KW - trace gas KW - volcano cloud composition N1 - Accession Number: 18135985; Hunton, D.E. 1; Email Address: donald.hunton@hanscom.af.mil Viggiano, A.A. 1 Miller, T.M. 1 Ballenthin, J.O. 1 Reeves, J.M. 2 Wilson, J.C. 2 Lee, Shan-Hu 2 Anderson, B.E. 3 Brune, W.H. 4 Harder, H. 4 Simpas, J.B. 4 Oskarsson, N. 5; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA 01731, United States 2: Department of Engineering, University of Denver, Denver, CO 80208, United States 3: NASA Langley Research Center, Hampton, VA 23681, United States 4: Department of Meteorology, Pennsylvania State University, State College, PA 16802, United States 5: Nordic Volcanological Institute, Reykjavik, Iceland; Source Info: Jul2005, Vol. 145 Issue 1/2, p23; Subject Term: MOLECULAR evolution; Subject Term: SULFURIC acid; Subject Term: SPHERICAL astronomy; Subject Term: ATTENTION; Author-Supplied Keyword: aerosol; Author-Supplied Keyword: in-situ measurements; Author-Supplied Keyword: SO2 oxidation kinetics; Author-Supplied Keyword: trace gas; Author-Supplied Keyword: volcano cloud composition; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.jvolgeores.2005.01.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18135985&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tamirisakandala, S. AU - Bhat, R.B. AU - Miracle, D.B. AU - Boddapati, S. AU - Bordia, R. AU - Vanover, R. AU - Vasudevan, V.K. T1 - Effect of boron on the beta transus of Ti–6Al–4V alloy JO - Scripta Materialia JF - Scripta Materialia Y1 - 2005/07/15/ VL - 53 IS - 2 M3 - Article SP - 217 EP - 222 SN - 13596462 AB - Abstract: The influence of boron on the β transus of Ti–6Al–4V is established in a powder metallurgy Ti–6Al–4V–1.7B alloy using microstructural analysis, electrical resistivity, and dilatometry. An increase in the β transus by ∼60°C was observed, which is attributed to the equilibrium as well as to supersaturated B in the solid solution. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - METALLIC composites KW - CHEMICAL engineering KW - SOLID solutions KW - Electrical resistivity KW - Microstructure KW - Phase transformation KW - Titanium alloys N1 - Accession Number: 17795455; Tamirisakandala, S. 1; Email Address: sesh.tamirisa@fnnet.wpafbml.org Bhat, R.B. 2 Miracle, D.B. 3 Boddapati, S. 4 Bordia, R. 4 Vanover, R. 5 Vasudevan, V.K. 5; Affiliation: 1: Department of Mechanical Engineering, Ohio University, Athens, OH 45701, USA 2: UES, Inc., 4401 Dayton-Xenia Road, Dayton 45432, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA 4: Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA 5: Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, OH 45221, USA; Source Info: Jul2005, Vol. 53 Issue 2, p217; Subject Term: TITANIUM alloys; Subject Term: METALLIC composites; Subject Term: CHEMICAL engineering; Subject Term: SOLID solutions; Author-Supplied Keyword: Electrical resistivity; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Phase transformation; Author-Supplied Keyword: Titanium alloys; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.scriptamat.2005.03.038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17795455&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eapen, Kalathil C. AU - Patton, Steven T. AU - Smallwood, Steven A. AU - Nainaparampil, Josekutty J. AU - Zabinski, Jeffrey S. T1 - Aging of a fluorinated lubricant on bare and DLC-coated silicon-based MEMS JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2005/07/15/ VL - 197 IS - 2/3 M3 - Article SP - 270 EP - 277 SN - 02578972 AB - Abstract: The aging of Fomblin Zdol® on a silicon-based MEMS device was investigated. The MEMS device used was an electrostatic lateral output motor. Devices freshly coated with Zdol performed exceedingly well compared to uncoated devices, but their performance deteriorated on storage in air. This is apparently due to the decomposition of the fluorinated lubricant in contact with the polysilicon surface for an extended period. XPS and AFM studies show that the composition and morphology of the Zdol-coated polysilicon surface change on aging. A stable, cohesive barrier layer deposited to prevent direct contact of the fluorinated lubricant with polysilicon enhanced the stability of the lubricant. As widely used in hard disk lubrication, a thin film of diamond-like carbon (DLC) acted as an excellent barrier layer extending the life of unlubricated devices and preventing degradation of those lubricated by Zdol. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - DATA disk drives KW - HARD disks (Computer science) KW - SOLID state electronics KW - Aging KW - Barrier layer KW - Diamond-like carbon (DLC) KW - Fomblin Zdol® KW - MEMS lubrication N1 - Accession Number: 18512251; Eapen, Kalathil C. 1; Email Address: kalathil.eapen@wpafb.af.mil Patton, Steven T. 1 Smallwood, Steven A. 2 Nainaparampil, Josekutty J. 2 Zabinski, Jeffrey S. 3; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469-0168, USA 2: Universal Technology Corp., 1270 N. Fairfield Rd., Dayton, OH 45432-2600, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Jul2005, Vol. 197 Issue 2/3, p270; Subject Term: THIN films; Subject Term: DATA disk drives; Subject Term: HARD disks (Computer science); Subject Term: SOLID state electronics; Author-Supplied Keyword: Aging; Author-Supplied Keyword: Barrier layer; Author-Supplied Keyword: Diamond-like carbon (DLC); Author-Supplied Keyword: Fomblin Zdol®; Author-Supplied Keyword: MEMS lubrication; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.surfcoat.2004.12.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18512251&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mosbacker, H. L. AU - Strzhemechny, Y. M. AU - White, B. D. AU - Smith, P. E. AU - Look, D. C. AU - Reynolds, D. C. AU - Litton, C. W. AU - Brillson, L. J. T1 - Role of near-surface states in ohmic-Schottky conversion of Au contacts to ZnO. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/07/04/ VL - 87 IS - 1 M3 - Article SP - 012102 PB - American Institute of Physics SN - 00036951 AB - A conversion from ohmic to rectifying behavior is observed for Au contacts on atomically ordered polar ZnO surfaces following remote, room-temperature oxygen plasma treatment. This transition is accompanied by reduction of the “green” deep level cathodoluminescence emission, suppression of the hydrogen donor-bound exciton photoluminescence and a ∼0.75 eV increase in n-type band bending observed via x-ray photoemission. These results demonstrate that the contact type conversion involves more than one mechanism, specifically, removal of the adsorbate-induced accumulation layer plus lowered tunneling due to reduction of near-surface donor density and defect-assisted hopping transport. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SCHOTTKY-barrier diodes KW - SEMICONDUCTOR diodes KW - SEMICONDUCTOR-metal boundaries KW - CATHODOLUMINESCENCE KW - ELECTRON emission KW - PHOTOEMISSION N1 - Accession Number: 18008439; Mosbacker, H. L. 1; Email Address: mosbacker.1@osu.edu Strzhemechny, Y. M. 1 White, B. D. 1 Smith, P. E. 2 Look, D. C. 3 Reynolds, D. C. 3 Litton, C. W. 3 Brillson, L. J. 1; Affiliation: 1: Department of Electrical and Computer Engineering, Ohio State University, Columbus, Ohio 43210. 2: Department of Physics, Ohio State University, Columbus, Ohio 43210. 3: Air Force Research Laboratory, AFRL/MLPS, Wright-Patterson Air Force Base, Ohio 45435.; Source Info: 7/4/2005, Vol. 87 Issue 1, p012102; Subject Term: SCHOTTKY-barrier diodes; Subject Term: SEMICONDUCTOR diodes; Subject Term: SEMICONDUCTOR-metal boundaries; Subject Term: CATHODOLUMINESCENCE; Subject Term: ELECTRON emission; Subject Term: PHOTOEMISSION; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.1984089 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18008439&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Salem, A.A. AU - Kalidindi, S.R. AU - Semiatin, S.L. T1 - Strain hardening due to deformation twinning in α-titanium: Constitutive relations and crystal-plasticity modeling JO - Acta Materialia JF - Acta Materialia Y1 - 2005/07// VL - 53 IS - 12 M3 - Article SP - 3495 EP - 3502 SN - 13596454 AB - Abstract: The mechanisms governing twin-induced strain hardening of high-purity α-titanium at room temperature were incorporated into constitutive laws to describe the evolution of both twin and slip resistance due to deformation twinning. The proposed equations were incorporated in a Taylor-type crystal plasticity model to predict mechanical behavior and texture evolution for different deformation paths. Model predictions for the overall stress–strain response and texture evolution compared well with the experimental results. Specifically, the model captured the three stages of strain hardening for uniaxial-compression and plane-strain-compression testing of α-titanium. In addition, predicted texture evolution due to the reorientation of twinned area showed excellent agreement with the observations. These findings proved the necessity of incorporating twinning and its associated hardening mechanisms in realistic constitutive descriptions to account for anisotropic strain-hardening behavior and texture evolution in materials that deform by both slip and twinning. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM KW - ANISOTROPY KW - CRYSTALLOGRAPHY KW - MATTER -- Properties KW - PLASTICITY KW - Polycrystal modeling KW - Texture KW - Titanium KW - Twinning N1 - Accession Number: 17927590; Salem, A.A. 1,2; Email Address: ayman.salem@fnnet.wpafbml.org Kalidindi, S.R. 2 Semiatin, S.L. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright-Patterson AFB, OH 45433, United States 2: Department of Materials Science and Engineering, Drexel University, Philadelphia, PA 19104, United States; Source Info: Jul2005, Vol. 53 Issue 12, p3495; Subject Term: TITANIUM; Subject Term: ANISOTROPY; Subject Term: CRYSTALLOGRAPHY; Subject Term: MATTER -- Properties; Subject Term: PLASTICITY; Author-Supplied Keyword: Polycrystal modeling; Author-Supplied Keyword: Texture; Author-Supplied Keyword: Titanium; Author-Supplied Keyword: Twinning; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.actamat.2005.04.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17927590&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ibrahim, R. A. AU - Beloiu, D. M. AU - Pettit, C. L. T1 - Influence of Joint Relaxation on Deterministic and Stochastic Panel Flutter. JO - AIAA Journal JF - AIAA Journal Y1 - 2005/07// VL - 43 IS - 7 M3 - Article SP - 1444 EP - 1454 SN - 00011452 AB - The influence of boundary condition relaxation on two-dimensional panel flutter is studied in the absence and presence of random pressure differential and in-plane loading. The boundary-value problem of the panel involves time-dependent boundary conditions that are converted into autonomous form using a special coordinate transformation. The resulting boundary conditions are combined with the governing nonhomogeneous, partial differential equation that includes the influence of the boundary condition relaxation. The relaxation and system nonlinearity are found to have opposite effects on the time evolution of the panel frequency. Furthermore, the damping of the panel exhibits a critical value governed by the relaxation parameter, below which the damping has a destabilizing effect and above the critical value it has stabilizing effect. The influence of random in-plane loading and random pressure differential is estimated using Monte Carlo simulation. Stochastic stability boundaries under random in-plane loading are estimated below and above the critical aerodynamic pressure. Depending on the system damping and dynamic pressure, the time evolution of the panel frequency content can increase or decrease with time as the boundary conditions approach the near simple support case. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUTTER (Aerodynamics) KW - AERODYNAMICS KW - DIFFERENTIAL equations KW - BOUNDARIES KW - MONTE Carlo method KW - DYNAMICS N1 - Accession Number: 17595357; Ibrahim, R. A. 1 Beloiu, D. M. 2 Pettit, C. L. 3,4; Affiliation: 1: Professor, Department of Mechanical Engineering, Wayne State University, Detroit, Michigan 48202 2: Graduate Research Assistant, Department of Mechanical Engineering, Wayne State University, Detroit, Michigan 48202 3: Senior Research Aerospace Engineer, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 4: Assistant Professor, Aerospace Engineering Department, U.S. Naval Academy, Annapolis, MD 21402; Source Info: Jul2005, Vol. 43 Issue 7, p1444; Subject Term: FLUTTER (Aerodynamics); Subject Term: AERODYNAMICS; Subject Term: DIFFERENTIAL equations; Subject Term: BOUNDARIES; Subject Term: MONTE Carlo method; Subject Term: DYNAMICS; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17595357&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bjorge, Scott T. AU - Reedert, Mark F. AU - Subramanian, C. AU - Crafton, Jim AU - Fonov, Sergey T1 - Flow Around an Object Projected from a Cavity into a Supersonic Freestream. JO - AIAA Journal JF - AIAA Journal Y1 - 2005/07// VL - 43 IS - 7 M3 - Article SP - 1465 EP - 1475 SN - 00011452 AB - Store-cavity interaction was investigated by using fast-response pressure transducers, high-speed schlieren photography, and pressure-sensitive paint (PSP) at freestream Mach numbers of 1.8 and 2.9. The influence of Mach number on the interaction of a cavity (L/D = 3.6, W/D = 3.8) and a modeled store was characterized. High- speed schlieren photography illustrated the real-time motion of coherent spanwise structures in the Mach 1.8 flow and revealed the absence of these structures in the Mach 2.9 flow. The spectra measured in the Mach 1.8 flow exhibited clear resonant peaks consistent with Rossiter modes, whereas the Mach 2.9 flow did not. The mean floor pressure increased as the store was positioned nearer to the free shear layer for both Mach number conditions. Interestingly, the level of the pressure fluctuations measured on the cavity floor decreased for the Mach 1.8 ease when the store was positioned in the freestream but increased for the Mach 2.9 case. PSP was applied to the cavity floor and to the modeled store. Integration of the measured pressure field on the store yielded information on the forces and pitching moment. Schlieren imaging of a modeled store exiting the cavity indicated that the free shear layer is slightly displaced by the moving store. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSDUCERS KW - SCHLIEREN photography KW - SCIENTIFIC photography KW - PRESSURE-sensitive paint KW - AIR pressure -- Measurement -- Equipment & supplies KW - PITCHING (Aerodynamics) KW - AERODYNAMICS N1 - Accession Number: 17595359; Bjorge, Scott T. 1 Reedert, Mark F. 2; Email Address: mark.reeder@afit.edu Subramanian, C. 3 Crafton, Jim 4 Fonov, Sergey; Affiliation: 1: Captain, Aeronautical Engineer, U.S. Air Force Research Laboratory, U.S. Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433-7765 2: Assistant Professor, Department of Aeronautics and Astronautics, U.S. Air Force Research Laboratory, U.S. Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433-7765 3: Professor of Mechanical and Aerospace Engineering, Florida Institute of Technology, Melbourne, Florida 32901-6975 4: Research Scientist, Research and Development Department, Innovative Scientific Solutions, Inc., Dayton, Ohio 45440; Source Info: Jul2005, Vol. 43 Issue 7, p1465; Subject Term: TRANSDUCERS; Subject Term: SCHLIEREN photography; Subject Term: SCIENTIFIC photography; Subject Term: PRESSURE-sensitive paint; Subject Term: AIR pressure -- Measurement -- Equipment & supplies; Subject Term: PITCHING (Aerodynamics); Subject Term: AERODYNAMICS; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17595359&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hagstod, David T1 - Shipping Out to the War Zone. JO - American Journal of Nursing JF - American Journal of Nursing Y1 - 2005/07// VL - 105 IS - 7 M3 - Article SP - 38 EP - 38 SN - 0002936X AB - This article reports that from September 1990 to May 1991, the author was a combat medical specialist with the U.S. Army in operations Desert Shield and Desert Storm. The author is now creating a will and assigning power of attorney before he leaves for his first tour of duty in Iraq. The author has been working as a travel nurse in Rochester, New Hampshire. The author decide to visit Iraq when he heard that there's a shortage of medical personnel at Iraq. The author expects to leave for Balad, Iraq, this summer, for a tour of 60 days. KW - MEDICAL personnel KW - ARMED Forces KW - SPECIAL operations (Military science) KW - OPERATION Desert Shield, 1990-1991 KW - PERSIAN Gulf War, 1991 KW - IRAQ KW - UNITED States N1 - Accession Number: 17556940; Hagstod, David 1; Email Address: Balad@yahoo.com; Affiliation: 1: Technical Sergeant in Louisiana Air National Guard, United States Air Force.; Source Info: Jul2005, Vol. 105 Issue 7, p38; Subject Term: MEDICAL personnel; Subject Term: ARMED Forces; Subject Term: SPECIAL operations (Military science); Subject Term: OPERATION Desert Shield, 1990-1991; Subject Term: PERSIAN Gulf War, 1991; Subject Term: IRAQ; Subject Term: UNITED States; NAICS/Industry Codes: 928110 National Security; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17556940&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zagidullin, M. V. AU - Nikolaev, V. D. AU - Svistun, M. I. AU - Khvatov, N. A. AU - Hager, G. D. T1 - Characteristics of the gain medium for an ejector COIL with supersonic nozzles for the driver buffer gas. JO - Applied Physics A: Materials Science & Processing JF - Applied Physics A: Materials Science & Processing Y1 - 2005/07// VL - 81 IS - 2 M3 - Article SP - 311 EP - 315 PB - Springer Science & Business Media B.V. SN - 09478396 AB - The use of supersonic nozzles for the driver nitrogen in an ejector nozzle bank (ENB) for chemical-oxygen iodine laser (COIL) resulted in the elimination of the chocking effect for the primary oxygen flow and formation of a low temperature gain medium. The ENB generates a supersonic gain medium with a Mach number greater than 2.2, and a temperature less than 200 K. The potential recovered pressure was 90 Torr with a small signal gain greater than 10-2 cm-1. With a 5 cm gain length for this nozzle, the output power was 1.2 kW with a chemical efficiency of 23.4%. A strong decay of I(2 P1/2) emission, (concentration), along the gain medium flow was observed . [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics A: Materials Science & Processing is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERSONIC nozzles KW - SUPERSONIC aerodynamics KW - IODINE lasers KW - CHEMICAL lasers KW - LASERS KW - PHYSICS N1 - Accession Number: 17089851; Zagidullin, M. V. 1; Email Address: marsel@fian.smr.ru Nikolaev, V. D. 1 Svistun, M. I. 1 Khvatov, N. A. 1 Hager, G. D. 2; Affiliation: 1: Lebedev Physical Institute, Samara Branch, Novosadovaya 221, Samara, Russia, 443011 2: US Air Force Research Laboratory, Kirtland AFB, NM 87117, AFRL/ Directed Energy Directorate 3550 Aberdeen Ave. SE, Kirtland, AFB NM, 87117-5776; Source Info: Jul2005, Vol. 81 Issue 2, p311; Subject Term: SUPERSONIC nozzles; Subject Term: SUPERSONIC aerodynamics; Subject Term: IODINE lasers; Subject Term: CHEMICAL lasers; Subject Term: LASERS; Subject Term: PHYSICS; Number of Pages: 5p; Document Type: Article L3 - 10.1007/s00339-005-3229-x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17089851&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Katta, Viswanath R. AU - Blevins, Linda G. AU - Roquemore, William M. T1 - Dynamics of an inverse diffusion flame and its role in polycyclic-aromatic-hydrocarbon and soot formation JO - Combustion & Flame JF - Combustion & Flame Y1 - 2005/07// VL - 142 IS - 1/2 M3 - Article SP - 33 EP - 51 SN - 00102180 AB - Abstract: Residence time and thermo-chemical environment are important factors in the soot-formation process in flames. Recent studies have revealed that the soot generated in an inverse diffusion flame (IDF) is not fully carbonized as it is in a normal diffusion flame. For understanding the chemical and physical structure of the partially carbonized soot formed in inverse diffusion flames, knowledge of the flow dynamics of these flames is required. A time-dependent, detailed-chemistry computational-fluid-dynamics (CFD) model is developed for simulation of an ethylene–air inverse jet-diffusion flame that has been studied experimentally. Steady-state simulations show that all of the polycyclic-aromatic-hydrocarbon (PAH) species are produced outside the flame surface on the fuel side. Unsteady simulations reveal that buoyancy-induced vortices establish outside the flame because of the low fuel jet velocity (∼40 cm/s) employed. These vortices in inverse diffusion flames, as opposed to those in normal diffusion flames, appear primarily in the exhaust jet. The advection of these vortices at 17.2 Hz increases mixing and causes PAH species to be more uniformly distributed in downstream locations. While the concentrations of rapidly formed radical and product species are not altered appreciably by the flame oscillation, concentrations of certain slowly formed PAH species are significantly changed. The dynamics of 20-nm tracer particles injected from the 1200 K fuel-side contour line suggest that soot particles are reheated and cooled alternately while being entrained into and advected by the buoyancy-induced vortices. This flow pattern could explain the experimentally observed large size and slight carbonization of IDF soot particles. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLAME KW - SOOT KW - BENZENE KW - FLUID dynamics KW - Benzene KW - Flicker KW - Inverse diffusion flame KW - PAH KW - Soot KW - Soot inception N1 - Accession Number: 17953213; Katta, Viswanath R. 1; Email Address: vrkatta@erinet.com Blevins, Linda G. 2 Roquemore, William M. 3; Affiliation: 1: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, OH 45440, USA 2: Combustion Research Facility, Sandia National Laboratories, Livermore, CA 94550-0969, USA 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Jul2005, Vol. 142 Issue 1/2, p33; Subject Term: FLAME; Subject Term: SOOT; Subject Term: BENZENE; Subject Term: FLUID dynamics; Author-Supplied Keyword: Benzene; Author-Supplied Keyword: Flicker; Author-Supplied Keyword: Inverse diffusion flame; Author-Supplied Keyword: PAH; Author-Supplied Keyword: Soot; Author-Supplied Keyword: Soot inception; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.combustflame.2005.02.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17953213&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Meyer, T.R. AU - Roy, S. AU - Lucht, R.P. AU - Gord, J.R. T1 - Dual-pump dual-broadband CARS for exhaust-gas temperature and CO2–O2–N2 mole-fraction measurements in model gas-turbine combustors JO - Combustion & Flame JF - Combustion & Flame Y1 - 2005/07// VL - 142 IS - 1/2 M3 - Article SP - 52 EP - 61 SN - 00102180 AB - Abstract: Application of dual-pump, dual-broadband (DPDB) coherent anti-Stokes Raman scattering (CARS) for the measurement of temperature and multiple-species mole fractions is presented for the first time in a liquid-fueled combustor of practical interest. In this system pure rotational transitions of O2–N2 and the ro-vibrational transitions of CO2–N2 are probed using two narrowband pump beams, a broadband pump beam, and a broadband Stokes beam. This technique permits highly accurate temperature measurements at both low and high temperatures as well as mole-fraction measurements of two molecules with respect to N2 from each laser shot. Single-shot measurements of temperature and mole-fraction ratios of CO2/N2 and O2/N2 in the exhaust stream of a swirl-stabilized, JP-8-fueled, model gas-turbine combustor are presented for equivalence ratios ranging from 0.45 to 1.0. Agreement between mean rotational and ro-vibrational temperatures is within ∼3%, and mean measurements of CO2/N2 and O2/N2 mole-fraction ratios are within ∼15% of equilibrium theory. To illustrate the ability of the current measurement system to track multiple scalar statistics in turbulent reacting flows, histograms and scatter plots of temperature and species mole fractions are presented within the potential-core and turbulent-shear-layer regions of the exhaust stream. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TEMPERATURE KW - CARBON dioxide KW - OXYGEN KW - NITROGEN KW - GAS turbines -- Combustion chambers KW - Carbon dioxide KW - CARS KW - Gas-turbine combustor KW - Nitrogen KW - Oxygen KW - Temperature N1 - Accession Number: 17953214; Meyer, T.R. 1; Email Address: trmeyer@innssi.com Roy, S. 1 Lucht, R.P. 2 Gord, J.R. 3; Affiliation: 1: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, OH 45440, USA 2: Department of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Jul2005, Vol. 142 Issue 1/2, p52; Subject Term: TEMPERATURE; Subject Term: CARBON dioxide; Subject Term: OXYGEN; Subject Term: NITROGEN; Subject Term: GAS turbines -- Combustion chambers; Author-Supplied Keyword: Carbon dioxide; Author-Supplied Keyword: CARS; Author-Supplied Keyword: Gas-turbine combustor; Author-Supplied Keyword: Nitrogen; Author-Supplied Keyword: Oxygen; Author-Supplied Keyword: Temperature; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.combustflame.2005.02.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17953214&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buryachenko, V.A. AU - Roy, A. T1 - Effective elastic moduli of nanocomposites with prescribed random orientation of nanofibers JO - Composites: Part B, Engineering JF - Composites: Part B, Engineering Y1 - 2005/07// VL - 36 IS - 5 M3 - Article SP - 405 EP - 416 SN - 13598368 AB - Abstract: Nanocomposite is modeled as a linearly elastic composite medium, which consists of a homogeneous matrix containing a statistically homogeneous random field of homogeneous prolate spheroidal nanofibers with prescribed random orientation. Estimation of effective elastic moduli of nanocomposites was performed by the version of effective field method (see for references Buryachenko VA. Multiparticle effective field and related methods in micromechanics of composite materials. Appl Mech Rev 2001;54:1–47) developed in the framework of quasi-crystalline approximation when the spatial correlations of inclusion location take particular ellipsoidal forms. The independent justified choice of shapes of inclusions and correlation holes provide the formulae of effective moduli which are symmetric, completely explicit and easily to use. The parametric numerical analyses revealed the most sensitive parameters influencing the effective moduli which are defined by the axial elastic moduli of nanofibers rather than their transversal moduli as well as by the justified choice of correlation holes, concentration and prescribed random orientation of nanofibers. [Copyright &y& Elsevier] AB - Copyright of Composites: Part B, Engineering is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIBERS KW - MODULI theory KW - STRAINS & stresses (Mechanics) KW - SOLID state physics KW - STRENGTH of materials KW - A. Polymer–matrix composites KW - B. Elasticity KW - B. Microstructure KW - C. Micro-mechanics N1 - Accession Number: 17675483; Buryachenko, V.A. 1; Email Address: buryach@aol.com Roy, A. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469-0168, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLBC, Wright–Patterson AFB, OH 45433-7750, USA; Source Info: Jul2005, Vol. 36 Issue 5, p405; Subject Term: FIBERS; Subject Term: MODULI theory; Subject Term: STRAINS & stresses (Mechanics); Subject Term: SOLID state physics; Subject Term: STRENGTH of materials; Author-Supplied Keyword: A. Polymer–matrix composites; Author-Supplied Keyword: B. Elasticity; Author-Supplied Keyword: B. Microstructure; Author-Supplied Keyword: C. Micro-mechanics; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.compositesb.2005.01.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17675483&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Repperger, Daniel W. AU - Phillips, Chandler A. AU - Berlin, James E. AU - Neidhard-Doll, Amy T. AU - Haas, Michael W. T1 - Human-Machine Haptic Interface Design Using Stochastic Resonance Methods. JO - IEEE Transactions on Systems, Man & Cybernetics: Part A JF - IEEE Transactions on Systems, Man & Cybernetics: Part A Y1 - 2005/07// VL - 35 IS - 4 M3 - Article SP - 574 EP - 582 SN - 10834427 AB - A study was conducted with haptic (forces produced on a human via mechanical systems) interfaces and how they may interact with an operator to improve tracking performance. What differs from traditional approaches is that a certain amount of random noise (in a haptic sense) was inserted into the human-machine loop. It was observed that the tracking performance of the operator benefitted from this interaction. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Systems, Man & Cybernetics: Part A is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HUMAN-machine systems KW - COMPUTER interfaces KW - ROBOTICS KW - NONLINEAR systems KW - SIGNAL-to-noise ratio KW - AUTOMATION KW - Haptics KW - human-machine interfaces KW - stochastic resonance N1 - Accession Number: 17532985; Repperger, Daniel W. 1 Phillips, Chandler A. 2 Berlin, James E. 3 Neidhard-Doll, Amy T. 2 Haas, Michael W. 1; Affiliation: 1: Air Force Research Laboratory, AFRL/HECP, Wright-Patterson AFB, OH 45433 USA. 2: School of Biomedical, Human Factors and Industrial Engineering, Wright State University, Dayton. OH 45435 USA. 3: General Dynamics, Inc., Dayton, OH 45432 USA.; Source Info: Jul2005, Vol. 35 Issue 4, p574; Subject Term: HUMAN-machine systems; Subject Term: COMPUTER interfaces; Subject Term: ROBOTICS; Subject Term: NONLINEAR systems; Subject Term: SIGNAL-to-noise ratio; Subject Term: AUTOMATION; Author-Supplied Keyword: Haptics; Author-Supplied Keyword: human-machine interfaces; Author-Supplied Keyword: stochastic resonance; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TSMCA.2005.850608 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17532985&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, X. AU - Ma, N. AU - Bliss, D.F. AU - Iseler, G.W. T1 - A numerical investigation of dopant segregation by modified vertical gradient freezing with moderate magnetic and weak electric fields JO - International Journal of Engineering Science JF - International Journal of Engineering Science Y1 - 2005/07// VL - 43 IS - 11/12 M3 - Article SP - 908 EP - 924 SN - 00207225 AB - Abstract: The paper numerically investigates melt growth of doped gallium-antimonide (GaSb) semiconductor crystals by the vertical gradient freeze (VGF) method utilizing a submerged heater. Electromagnetic (EM) stirring can be induced in the gallium-antimonide melt just above the crystal growth interface by applying a small radial electric current in the melt together with an axial magnetic field. The transport of any dopant by the stirring can promote better compositional homogeneity. This investigation presents a numerical model for the unsteady transport of a dopant during the VGF process by submerged heater growth with a moderate axial magnetic field and a weak electric field. Numerical predictions of the dopant distributions in the crystal and in the melt at several different stages during growth are presented. [Copyright &y& Elsevier] AB - Copyright of International Journal of Engineering Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC fields KW - ELECTRIC fields KW - ELECTROMAGNETIC fields KW - CRYSTAL grain boundaries N1 - Accession Number: 18194693; Wang, X. 1 Ma, N. 1; Email Address: nancy_ma@ncsu.edu Bliss, D.F. 2 Iseler, G.W. 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, North Carolina State University, Campus Box 7910, Raleigh, NC 27695, USA 2: US Air Force Research Laboratory, Sensors Directorate, AFRL/SNHC, 80 Scott Road, Hanscom AFB, MA 01731, USA; Source Info: Jul2005, Vol. 43 Issue 11/12, p908; Subject Term: MAGNETIC fields; Subject Term: ELECTRIC fields; Subject Term: ELECTROMAGNETIC fields; Subject Term: CRYSTAL grain boundaries; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.ijengsci.2005.03.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18194693&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blair, Maxwell AU - Canfield, Robert A. AU - Roberts Jr., Ronald W. T1 - Joined-Wing Aeroelastic Design with Geometric Nonlinearity. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2005/07//Jul/Aug2005 VL - 42 IS - 4 M3 - Article SP - 832 EP - 848 SN - 00218669 AB - An integrated process is presented that advances the design of an aeroelastic joined-wing concept by incorporating physics-based results at the system level. For instance, this process replaces empirical mass estimation with high-fidelity analytical mass estimations. Elements of nonlinear structures, aerodynamics, and aeroelastic analyses were incorporated with vehicle configuration design. This process represents a significantly complex application of aeroelastic structural optimization. Specific fuel consumption for a fixed lift-to-drag ratio was considered in the process for estimating fuel to size the structure to meet range and loiter requirements. This design process was implemented on a single configuration for which two crucial nonlinear phenomena contribute to structural failure: large deformation aerodynamics and geometrically nonlinear structures. A correct model of the nonlinear aeroelastic physics offers the possibility of a successful design. Unconventional features of a joined-wing concept are presented with the aid of this unique design model. Hopefully, insight derived from the nonlinear aeroelastic design might be leveraged to the benefit of future joined-wing designs. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - AIRPLANE wings KW - NONLINEAR theories KW - AERODYNAMICS KW - GEOMETRY KW - STRUCTURAL design N1 - Accession Number: 19570879; Blair, Maxwell 1,2; Email Address: maxwell.blair@wpafb.af.mil Canfield, Robert A. 1,3; Email Address: robert.canfield@afit.edu Roberts Jr., Ronald W. 4; Email Address: ronald.roberts@wpafb.af.mil; Affiliation: 1: Associate Fellow, AIAA 2: Research Engineer, Air Vehicles Directorate, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542 3: Associate Professor, Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433-7765 4: Structural Composites Research Engineer, Materials and Manufacturing Directorate, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45431-7542; Source Info: Jul/Aug2005, Vol. 42 Issue 4, p832; Subject Term: AEROELASTICITY; Subject Term: AIRPLANE wings; Subject Term: NONLINEAR theories; Subject Term: AERODYNAMICS; Subject Term: GEOMETRY; Subject Term: STRUCTURAL design; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 17p; Illustrations: 14 Diagrams, 10 Charts, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19570879&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dogan, Atilla AU - Venkataramanan, Sriram AU - Blake, William T1 - Modeling of Aerodynamic Coupling Between Aircraft in Close Proximity. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2005/07//Jul/Aug2005 VL - 42 IS - 4 M3 - Article SP - 941 EP - 955 SN - 00218669 AB - A method is developed for modeling the aerodynamic coupling between aircraft flying in close proximity. Velocities induced on a trailing aircraft by vortices from an aircraft upstream are written as a function of the relative separation and relative orientation between the two aircraft. The nonuniform vortex-induced wind and wind gradients acting on the trail aircraft are approximated as effective uniform wind and wind gradients. In a dynamic simulation, the effective wind can be used directly in the equations of motion, whereas the wind gradient can be used in the standard buildup equations for the aerodynamic moments. This removes necessity to explicitly compute the induced forces and moments. Various vortex models for estimating induced velocities and averaging schemes for computing effective wind components and gradients are assessed. Results from the method are compared to wind-tunnel data for a formation of two similar aircraft. A good match is obtained between experimental data and the predicted incremental force and moment coefficients induced on the trail aircraft. It is briefly discussed how the effective wind components and gradients can be incorporated into equations of motion of aircraft flying in a vortex field. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - AIR speed KW - VORTEX motion KW - WINDS KW - AIRPLANES N1 - Accession Number: 19570891; Dogan, Atilla 1,2 Venkataramanan, Sriram 3,4 Blake, William 5,6; Affiliation: 1: Member, AIAA 2: Assistant Professor, Department of Mechanical and Aerospace Engineering, University of Texas at Arlington, Arlington, Texas 76019 3: Student Member, AIAA 4: Graduate Student, Department of Mechanical and Aerospace Engineering, University of Texas at Arlington, Arlington, Texas 76019 5: Associate Fellow, AIAA 6: Aerospace Engineer, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jul/Aug2005, Vol. 42 Issue 4, p941; Subject Term: AERODYNAMICS; Subject Term: AIR speed; Subject Term: VORTEX motion; Subject Term: WINDS; Subject Term: AIRPLANES; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 15p; Illustrations: 8 Diagrams, 1 Chart, 9 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19570891&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pan, E. AU - Han, F. AU - Albrecht, J. D. T1 - Strain fields in InAs/GaAs quantum wire structures: Inclusion versus inhomogeneity. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2005/07//7/1/2005 VL - 98 IS - 1 M3 - Article SP - 013534 PB - American Institute of Physics SN - 00218979 AB - This paper studies the elastic fields in InAs/GaAs quantum wire (QWR) structures arising from the lattice mismatch between InAs and GaAs. The present treatment is different from recent analyses based on the Eshelby inclusion approach where the QWR material, for simplicity, is assumed to be the same as the matrix/substrate. Here, a more complete treatment is developed taking into account the structural inhomogeneity using the boundary integral equation method. We implement our model using discrete boundary elements at the interface between the QWR and its surrounding matrix. The coefficients of the algebraic equations are derived exactly for constant elements using our recent Green’s-function solutions in the Stroh formalism. For both (001) and (111) growth directions, our results show that while the elastic fields far from the QWR are approximated well by the homogeneous inclusion approach, for points within or close to the QWR, the differences between the fields computed with the simplified inclusion and complete inhomogeneity models can be as large as 10% for the test system. These differences in the strain fields will have strong implications for the modeling of the quantized energy states of the quantum wire nanostructures. Since the strain fields inside and close to the wire are more important than the exterior strain fields from the standpoint of the confined electronic states, we suggest that in the vicinity of the QWR, the inhomogeneity model be used with proper elastic constants, while the simple exact inclusion model be used in the bulk of surrounding medium. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOWIRES KW - EQUATIONS KW - NANOSTRUCTURES KW - ELECTRONICS KW - ENERGY levels (Quantum mechanics) KW - PHYSICS N1 - Accession Number: 17691533; Pan, E. 1; Email Address: pan2@uakron.edu Han, F. 1 Albrecht, J. D. 2; Affiliation: 1: University of Akron, Akron, Ohio 44039 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: 7/1/2005, Vol. 98 Issue 1, p013534; Subject Term: NANOWIRES; Subject Term: EQUATIONS; Subject Term: NANOSTRUCTURES; Subject Term: ELECTRONICS; Subject Term: ENERGY levels (Quantum mechanics); Subject Term: PHYSICS; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 12p; Illustrations: 2 Black and White Photographs, 2 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.1948510 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17691533&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Duren, Peter AU - McDougall, Jane AU - Schaubroeck, Lisbeth T1 - Harmonic mappings onto stars JO - Journal of Mathematical Analysis & Applications JF - Journal of Mathematical Analysis & Applications Y1 - 2005/07// VL - 307 IS - 1 M3 - Article SP - 312 EP - 320 SN - 0022247X AB - Abstract: A general version of the Radó–Kneser–Choquet theorem implies that a piecewise constant sense-preserving mapping of the unit circle onto the vertices of a convex polygon extends to a univalent harmonic mapping of the unit disk onto the polygonal domain. This paper discusses similarly generated harmonic mappings of the disk onto nonconvex polygonal regions in the shape of regular stars. Calculation of the Blaschke product dilatation allows a determination of the exact range of parameters that produce univalent mappings. [Copyright &y& Elsevier] AB - Copyright of Journal of Mathematical Analysis & Applications is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HARMONIC functions (Mathematics) KW - POLYGONS KW - PARTIAL differential equations KW - BESSEL functions KW - Dilatation KW - Harmonic mappings N1 - Accession Number: 17796771; Duren, Peter 1; Email Address: duren@umich.edu McDougall, Jane 2; Email Address: jmcdougall@coloradocollege.edu Schaubroeck, Lisbeth 3; Email Address: beth.schaubroeck@usafa.af.mil; Affiliation: 1: Department of Mathematics, University of Michigan, Ann Arbor, MI 48109-1109, USA 2: Department of Mathematics and Computer Science, Colorado College, Colorado Springs, CO 80903, USA 3: Department of Mathematical Sciences, US Air Force Academy, USAF Academy, CO 80840-6252, USA; Source Info: Jul2005, Vol. 307 Issue 1, p312; Subject Term: HARMONIC functions (Mathematics); Subject Term: POLYGONS; Subject Term: PARTIAL differential equations; Subject Term: BESSEL functions; Author-Supplied Keyword: Dilatation; Author-Supplied Keyword: Harmonic mappings; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jmaa.2004.10.068 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17796771&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Corporan, Edwin AU - Reich, Richard AU - Monroig, Orvin AU - DeWitt, Matthew J. AU - Larson, Venus AU - Aulich, Ted AU - Mann, Michael AU - Seames, Wayne T1 - Impacts of Biodiesel on Pollutant Emissions of a JP-8--Fueled Turbine Engine. JO - Journal of the Air & Waste Management Association (Air & Waste Management Association) JF - Journal of the Air & Waste Management Association (Air & Waste Management Association) Y1 - 2005/07// VL - 55 IS - 7 M3 - Article SP - 940 EP - 949 PB - Air & Waste Management Association SN - 10962247 AB - The impacts of biodiesel on gaseous and particulate matter (PM) emissions of a JP-8-fueled T63 engine were investigated. Jet fuel was blended with the soybean oil-derived methyl ester biofuel at various concentrations and combusted in the turbine engine. The engine was operated at three power settings, namely ground idle, cruise, and takeoff power, to study the impact of the biodiesel at significantly different pressure and temperature conditions. Particulate emissions were characterized by measuring the particle number density (PND; particulate concentration), the particle size distribution, and the total particulate mass. PM samples were collected for off-line analysis to obtain information about the effect of the biodiesel on the polycyclic aromatic hydrocarbon (PAH) content. In addition, temperature-programmed oxidation was performed on the collected soot samples to obtain information about the carbonaceous content (elemental or organic). Major and minor gaseous emissions were quantified using a total hydrocarbon analyzer, an oxygen analyzer, and a Fourier Transform IR analyzer. Test results showed the potential of biodiesel to reduce soot emissions in the jet-fueled turbine engine without negatively impacting the engine performance. These reductions, however, were observed only at the higher power settings with relatively high concentrations of biodiesel. Specifically, reductions of ∼15% in the PND were observed at cruise and takeoff conditions with 20% biodiesel in the jet fuel. At the idle condition, slight increases in PND were observed; however, evidence shows this increase to be the result of condensed uncombusted biodiesel. Most of the gaseous emissions were unaffected under all of the conditions. The biodiesel was observed to have minimal effect on the formation of polycyclic aromatic hydrocarbons during this study. In addition to the combustion results, discussion of the physical and chemical characteristics of the blended fuels obtained using standard American Society for Testing and Materials (ASTM) fuel specifications methods are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Air & Waste Management Association (Air & Waste Management Association) is the property of Air & Waste Management Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIODIESEL fuels KW - JET planes -- Fuel KW - BIOMASS energy KW - POLYCYCLIC aromatic hydrocarbons KW - SOOT N1 - Accession Number: 17534391; Corporan, Edwin 1; Email Address: edwin.corporan@wpafb.af.mil Reich, Richard 1 Monroig, Orvin 1 DeWitt, Matthew J. 2 Larson, Venus 3 Aulich, Ted 3 Mann, Michael 3 Seames, Wayne 3; Affiliation: 1: Air Force Research Laboratory-Fuels Branch, Wright-Patterson Air Force Base, OH 2: University of Dayton Research Institute, Dayton, OH 3: Chemical Engineering Department, University of North Dakota, Grand Forks, ND; Source Info: Jul2005, Vol. 55 Issue 7, p940; Subject Term: BIODIESEL fuels; Subject Term: JET planes -- Fuel; Subject Term: BIOMASS energy; Subject Term: POLYCYCLIC aromatic hydrocarbons; Subject Term: SOOT; NAICS/Industry Codes: 221117 Biomass Electric Power Generation; NAICS/Industry Codes: 221119 Other electric power generation; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 10p; Illustrations: 4 Charts, 7 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17534391&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Voevodin, A.A. AU - Jones, J.G. AU - Back, T.C. AU - Zabinski, J.S. AU - Strel’nitzki, V.E. AU - Aksenov, I.I. T1 - Comparative study of wear-resistant DLC and fullerene-like CNx coatings produced by pulsed laser and filtered cathodic arc depositions JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2005/07// VL - 197 IS - 1 M3 - Article SP - 116 EP - 125 SN - 02578972 AB - Abstract: Unhydrogenated amorphous diamond-like carbon (DLC) and fullerene-like carbon nitride (CNx, N/C ratio ∼0.2) are rival surface protection coatings with exceptional mechanical and tribological properties. A comparative study was made on their performance under sliding wear. Identical surface preparation procedures, coating architectures, thickness, and substrates were used to facilitate the comparison. Coatings were produced using pulsed laser deposition (PLD) and filtered cathodic arc deposition (FCAD). Samples of laser-DLC, laser-CNx, arc-DLC, and arc-CNx coatings were prepared and an extensive comparison of properties was completed: composition, structure, hardness, elastic modulus, stress, friction, and wear. The tribological properties were determined using steel and SiC balls in humid and dry environments. The comparison indicated that PLD and FCAD produce coatings with very similar compositions, structures, and properties. Independent of the growth technique, DLC coatings had hardnesses of 52–57 GPa and elastic moduli in the range of 490–560 GPa. The CNx coatings offered a reasonably high hardness of 28–30 GPa, while their elastic modulus was as low as 160 GPa. There was a clear difference in the tribological behavior of DLC and CNx, which depends on humidity. In humid air, DLC coatings had a coefficient of friction (c.o.f.) of 0.1, a very low wear rate, and formed a graphitic transfer film in friction contact. In the same tests, CNx coatings had a c.o.f. of 0.3–0.4, a higher wear rate, and did not form a transfer film. In this environment, the wear tracks on CNx coatings were polished by abrasive wear. In dry nitrogen, DLC coatings had a c.o.f. of approximately 0.15 and a higher wear rate, while CNx coatings had a c.o.f. of 0.03–0.04 and a lower wear rate with formation of a graphitic-like transfer film. The observed difference in mechanical response and tribological performance can be used to optimize the selection between DLC and CNx coatings, depending on application requirements. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COATING processes KW - SURFACES (Technology) KW - THIN films KW - COATINGS industry KW - Carbon nitride KW - Diamond-like carbon KW - Filtered cathodic arc deposition KW - Pulsed laser deposition KW - Tribology N1 - Accession Number: 17810595; Voevodin, A.A. 1; Email Address: andrey.voevodin@wpafb.af.mil Jones, J.G. 1 Back, T.C. 1 Zabinski, J.S. 1 Strel’nitzki, V.E. 2 Aksenov, I.I. 2; Affiliation: 1: MLBT, Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, 291 Hobson Way, Rm. 136, Bldg. 654, OH 45433-7750, USA 2: Kharkov Physical Technical Institute, Kharkov, Ukraine; Source Info: Jul2005, Vol. 197 Issue 1, p116; Subject Term: COATING processes; Subject Term: SURFACES (Technology); Subject Term: THIN films; Subject Term: COATINGS industry; Author-Supplied Keyword: Carbon nitride; Author-Supplied Keyword: Diamond-like carbon; Author-Supplied Keyword: Filtered cathodic arc deposition; Author-Supplied Keyword: Pulsed laser deposition; Author-Supplied Keyword: Tribology; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.surfcoat.2004.06.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17810595&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Khramov, A.N. AU - Voevodin, N.N. AU - Balbyshev, V.N. AU - Mantz, R.A. T1 - Sol–gel-derived corrosion-protective coatings with controllable release of incorporated organic corrosion inhibitors JO - Thin Solid Films JF - Thin Solid Films Y1 - 2005/07// VL - 483 IS - 1/2 M3 - Article SP - 191 EP - 196 SN - 00406090 AB - Abstract: Sol–gel derived organo-silicate hybrid coatings preloaded with organic corrosion inhibitors have been developed in order to provide active corrosion protection when integrity of the coating is compromised. The incorporation of organic corrosion inhibitors into hybrid coatings has been achieved as a result of physical entrapment of the inhibitor within the coating material at the stage of film formation and cross-linking. Entrapped corrosion inhibitor becomes active in corrosive electrolyte and can slowly diffuse out of the host material. To ensure continuing delivery of the inhibitor to corrosion sites and long-term corrosion protection, a sustained release of the inhibitor is achieved by a reversible chemical equilibrium of either ion-exchange of the inhibitor with the coating material or through cyclodextrin-assisted molecular encapsulation. Several organic compounds, such as mercaptobenzothiazole, mercaptobenzimidazole, mercaptobenzimidazolesulfonate, and thiosalicylic acid, have been selected to evaluate the effectiveness of these two approaches. Corrosion protection performance of the coatings on aluminum alloy 2024-T3 has been examined using electrochemical methods including scanning vibrating electrode technique, potentiodynamic scan, and electrochemical impedance spectroscopy. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COATING processes KW - THIN films KW - IMPEDANCE spectroscopy KW - COLLOIDS KW - Coatings KW - Corrosion KW - Cyclodextrin KW - Organic inhibitor N1 - Accession Number: 18479194; Khramov, A.N. 1; Email Address: alex.khramov@fnnet.wpafbml.org Voevodin, N.N. 2 Balbyshev, V.N. 1 Mantz, R.A. 3; Affiliation: 1: Universal Technology Corporation, 1270 N. Fairfield Road, Dayton, OH 45432-2600, USA 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0168, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Jul2005, Vol. 483 Issue 1/2, p191; Subject Term: COATING processes; Subject Term: THIN films; Subject Term: IMPEDANCE spectroscopy; Subject Term: COLLOIDS; Author-Supplied Keyword: Coatings; Author-Supplied Keyword: Corrosion; Author-Supplied Keyword: Cyclodextrin; Author-Supplied Keyword: Organic inhibitor; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.tsf.2004.12.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18479194&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liu, Y. AU - Nathan, M. I. AU - Ruden, P. P. AU - Van Nostrand, J. E. AU - Claflin, B. AU - Albrecht, J. D. T1 - Effect of Wet Etching on the Magnetic Properties of n-type GaMnN Layers. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2005/06/30/ VL - 772 IS - 1 M3 - Article SP - 359 EP - 360 PB - American Institute of Physics SN - 0094243X AB - We present a study of the effect of wet etching on the magnetic properties of two different GaMnN epi-layers. In both samples, X-ray diffraction scans revealed peaks attributed to secondary phases prior to etching and the disappearance of these peaks after etching. Temperature dependence of magnetization revealed a magnetic transition at approximately 170K in both samples. Both exhibited magnetic hysteresis, one up to 300K and the other only below 170K. After etching, the first sample still exhibited hysteresis up to 300K, and the other exhibited no hysteresis. Neither sample showed the magnetic transition at 170K after etching. A secondary phase with a Curie temperature near 170K may be responsible for the observed effects. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTORS -- Etching KW - MANGANESE KW - GALLIUM (Metal) KW - HYSTERESIS KW - MAGNETIC induction KW - CURIE temperature N1 - Accession Number: 17804541; Liu, Y. 1 Nathan, M. I. 1 Ruden, P. P. 1 Van Nostrand, J. E. 2 Claflin, B. 2,3 Albrecht, J. D. 2; Affiliation: 1: Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 3: Semiconductor Research Center, Wright State University, Dayton, Ohio 45435; Source Info: 2005, Vol. 772 Issue 1, p359; Subject Term: SEMICONDUCTORS -- Etching; Subject Term: MANGANESE; Subject Term: GALLIUM (Metal); Subject Term: HYSTERESIS; Subject Term: MAGNETIC induction; Subject Term: CURIE temperature; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 2p; Document Type: Article L3 - 10.1063/1.1994137 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17804541&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ram-Mohan, L. R. AU - Girgis, A. M. AU - Albrecht, J. D. AU - Litton, C. W. AU - Steiner, T. D. T1 - Wavefunction Engineering for GaN-Based Quantum Wells and Superlattices. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2005/06/30/ VL - 772 IS - 1 M3 - Article SP - 941 EP - 942 PB - American Institute of Physics SN - 0094243X AB - The electronic band structure of GaN-based heterostructures such as those comprised of AlGaN/GaN epitaxial layers is investigated using envelope function k·P theory. We obtain the valence states through minimization of a Lagrangian describing the electronic interaction with the lattice potential including spin-orbit effects. This construction yields transparent derivative operator ordering appropriate for arbitrary allowed crystallographic orientations. The issues of derivative operator ordering and boundary conditions at material interfaces can be significant given the strongly anisotropic character of the wurtzite crystal structure and we explore these effects on the resulting in-plane dispersions in detail. These results are of interest, for example, in treating A-plane wurtzite heterostructures such as GaN/AlGaN quantum wells grown on R-plane sapphire. Numerical examples are obtained using finite-element discretization in order to obtain the valence band electronic states for quantum wells and superlattices. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - WAVE functions KW - QUANTUM wells KW - SUPERLATTICES KW - ENERGY-band theory of solids KW - CRYSTALLOGRAPHY N1 - Accession Number: 17804800; Ram-Mohan, L. R. 1 Girgis, A. M. 1 Albrecht, J. D. 2 Litton, C. W. 2 Steiner, T. D. 3; Affiliation: 1: Worcester Polytechnic Institute, Worcester, Massachusetts 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 3: Air Force Office of Scientific Research, Arlington, Virginia; Source Info: 2005, Vol. 772 Issue 1, p941; Subject Term: GALLIUM nitride; Subject Term: WAVE functions; Subject Term: QUANTUM wells; Subject Term: SUPERLATTICES; Subject Term: ENERGY-band theory of solids; Subject Term: CRYSTALLOGRAPHY; Number of Pages: 2p; Document Type: Article L3 - 10.1063/1.1994418 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17804800&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baily, S. A. AU - Emin, David T1 - Disorder-induced non-Ohmic steady-state flow of hopping carriers. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2005/06/30/ VL - 772 IS - 1 M3 - Article SP - 1265 EP - 1266 PB - American Institute of Physics SN - 0094243X AB - We review the formal theory of multi-phonon hopping conductivity in a disordered medium beyond the linear response regime. Attention is focused on the relationship between disorder and non-Ohmic current flow. Some numerical studies of physically meaningful one- and two-dimensional models are reported and discussed. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHONONS KW - ELECTRIC conductivity KW - ELECTRIC currents KW - DIRECT currents KW - OHM'S law KW - THEORY N1 - Accession Number: 17804906; Baily, S. A. 1 Emin, David 2; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, KAFB, NM USA 2: Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM USA; Source Info: 2005, Vol. 772 Issue 1, p1265; Subject Term: PHONONS; Subject Term: ELECTRIC conductivity; Subject Term: ELECTRIC currents; Subject Term: DIRECT currents; Subject Term: OHM'S law; Subject Term: THEORY; Number of Pages: 2p; Document Type: Article L3 - 10.1063/1.1994572 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17804906&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ruden, P. P. AU - Smith, D. L. AU - Albrecht, J. D. T1 - Comparison of spin injection and transport in organic and inorganic semiconductors. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2005/06/30/ VL - 772 IS - 1 M3 - Article SP - 1377 EP - 1378 PB - American Institute of Physics SN - 0094243X AB - We present a theoretical model to describe spin transport in a structure consisting of a ferromagnetic metal injector, a thin (usually undoped) semiconductor layer, and a ferromagnetic metal collector. In thermal equilibrium the magnetic contacts are spin-polarized whereas the semiconductor is unpolarized. Due to the large ratio of the metal to semiconductor conductivities, the semiconductor needs to be driven far out of local thermal equilibrium to achieve efficient injection of spin-polarized electrons. This requires a barrier to injection that may be due either to a large Schottky barrier or to an insulating tunnel barrier. Since carrier mobilities (and other relevant parameters) in inorganic and organic semiconductors differ by orders of magnitude, the conditions for achieving a state far from equilibrium at the injecting contact are quite different for the two types of materials. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ROTATIONAL motion KW - FERROMAGNETIC materials KW - FERROMAGNETISM KW - SEMICONDUCTORS KW - PARTICLES (Nuclear physics) N1 - Accession Number: 17805035; Ruden, P. P. 1 Smith, D. L. 2 Albrecht, J. D. 3; Affiliation: 1: University of Minnesota, Minneapolis, MN 55455 2: Los Alamos National Laboratory, Los Alamos, New Mexico 87545 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: 2005, Vol. 772 Issue 1, p1377; Subject Term: ROTATIONAL motion; Subject Term: FERROMAGNETIC materials; Subject Term: FERROMAGNETISM; Subject Term: SEMICONDUCTORS; Subject Term: PARTICLES (Nuclear physics); NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 2p; Document Type: Article L3 - 10.1063/1.1994626 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17805035&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sandhu, S.S. AU - Crowther, R.O. AU - Fellner, J.P. T1 - Prediction of methanol and water fluxes through a direct methanol fuel cell polymer electrolyte membrane JO - Electrochimica Acta JF - Electrochimica Acta Y1 - 2005/06/30/ VL - 50 IS - 19 M3 - Article SP - 3985 EP - 3991 SN - 00134686 AB - Abstract: Development of a direct methanol fuel cell (DMFC) mass flux model, using conventional transport theory, is presented and used to predict the fluid phase superficial velocity, methanol and water molar fluxes, and the chemical species (methanol and water) dimensionless concentration profiles in the polymer electrolyte membrane, Nafion® 117, of a DMFC. Implementation of these equations is illustrated to generate the numerical data as functions of the variables such as the pressure difference across the membrane, methanol concentration at the cell anode, temperature, and position in the membrane. [Copyright &y& Elsevier] AB - Copyright of Electrochimica Acta is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUEL cells KW - DIRECT energy conversion KW - MATHEMATICAL statistics KW - STATISTICAL mechanics KW - Direct methanol fuel cell KW - Fuel cell KW - Mathematical model KW - Methanol crossover KW - Nafion KW - Proton exchange membrane N1 - Accession Number: 18006179; Sandhu, S.S. 1; Email Address: Sarwan.Sandhu@notes.udayton.edu Crowther, R.O. 1 Fellner, J.P. 2; Email Address: Joseph.Fellner@wpafb.af.mil; Affiliation: 1: University of Dayton, Department of Chemical and Materials Engineering, 300 College Park, Dayton, OH 45469-0246, USA 2: Air Force Research Laboratory, Propulsion Directorate, 1950 Fifth Street, Wright-Patterson AFB, OH 45433-7251, USA; Source Info: Jun2005, Vol. 50 Issue 19, p3985; Subject Term: FUEL cells; Subject Term: DIRECT energy conversion; Subject Term: MATHEMATICAL statistics; Subject Term: STATISTICAL mechanics; Author-Supplied Keyword: Direct methanol fuel cell; Author-Supplied Keyword: Fuel cell; Author-Supplied Keyword: Mathematical model; Author-Supplied Keyword: Methanol crossover; Author-Supplied Keyword: Nafion; Author-Supplied Keyword: Proton exchange membrane; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.electacta.2005.02.048 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18006179&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhu, K. AU - Doğan, S. AU - Moon, Y. T. AU - Leach, J. AU - Yun, F. AU - Johnstone, D. AU - Morkoç, H. AU - Li, G. AU - Ganguly, B. T1 - Effect of n+-GaN subcontact layer on 4H–SiC high-power photoconductive switch. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/06/27/ VL - 86 IS - 26 M3 - Article SP - 261108 PB - American Institute of Physics SN - 00036951 AB - High-power photoconductive semiconductor switching devices were fabricated on 4H–SiC. In order to prevent current crowding, reduce the contact resistance, and avoid contact degradation, a highly n-doped GaN subcontact layer was inserted between the contact metal and the high resistivity SiC bulk. This method led to a two orders of magnitude reduction in the on-state resistance and, similarly, the photocurrent efficiency was increased by two orders of magnitude with the GaN subcontact layer following the initial high current operation. Both dry etching and wet etching were used to remove the GaN subcontact layer in the channel area. Wet etching was found to be more suitable than dry etching. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR switches KW - SEMICONDUCTORS KW - ELECTRIC switchgear KW - GALLIUM nitride KW - SILICON carbide KW - ETCHING N1 - Accession Number: 17545076; Zhu, K. 1,2 Doğan, S. 1 Moon, Y. T. 1 Leach, J. 1 Yun, F. 1 Johnstone, D. 1 Morkoç, H. 1; Email Address: hmorkoc@vcu.edu Li, G. 2,3 Ganguly, B. 4; Affiliation: 1: Department of Electrical Engineering, Virginia Commonwealth University, 601 W. Main Street, Richmond, Virginia 23284 2: Tech Explore, LLC 3: Department of Engineering Physics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: 6/27/2005, Vol. 86 Issue 26, p261108; Subject Term: SEMICONDUCTOR switches; Subject Term: SEMICONDUCTORS; Subject Term: ELECTRIC switchgear; Subject Term: GALLIUM nitride; Subject Term: SILICON carbide; Subject Term: ETCHING; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 335313 Switchgear and Switchboard Apparatus Manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 335315 Switchgear and switchboard, and relay and industrial control apparatus manufacturing; NAICS/Industry Codes: 335930 Wiring device manufacturing; NAICS/Industry Codes: 335931 Current-Carrying Wiring Device Manufacturing; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.1951056 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17545076&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hollkamp, Joseph J. AU - Gordon, Robert W. AU - Spottswood, S. Michael T1 - Nonlinear modal models for sonic fatigue response prediction: a comparison of methods JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2005/06/21/ VL - 284 IS - 3-5 M3 - Article SP - 1145 EP - 1163 SN - 0022460X AB - Abstract: Accurate prediction of sonic fatigue response is important in designing aircraft structures for long life. Early prediction methods were based on single-mode, linear models which were not accurate for complex structures or large-amplitude response levels. Direct time integration of full, nonlinear, finite element models can provide accurate results, but at a prohibitive computational expense. Recent methods reduce the finite element model to a low-order system of nonlinear modal equations. The modal equations can then be integrated in the time domain. The computational burden is greatly reduced and an accurate response prediction can be accomplished. In this paper, several methods used to construct the nonlinear modal models are compared using a clamped–clamped beam as an example problem. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Fatigue KW - FINITE element method KW - MATHEMATICAL models KW - LINEAR models (Statistics) N1 - Accession Number: 17809210; Hollkamp, Joseph J.; Email Address: joseph.hollkamp@wpafb.af.mil Gordon, Robert W. 1 Spottswood, S. Michael 1; Affiliation: 1: Air Force Research Laboratory, AFRL/VASM, 2790 D. Street, Wright-Patterson AFB, OH 45433-7402, USA; Source Info: Jun2005, Vol. 284 Issue 3-5, p1145; Subject Term: MATERIALS -- Fatigue; Subject Term: FINITE element method; Subject Term: MATHEMATICAL models; Subject Term: LINEAR models (Statistics); Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.jsv.2004.08.036 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17809210&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Campbell, T.A. AU - Haugan, T.J. AU - Maartense, I. AU - Murphy, J. AU - Brunke, L. AU - Barnes, P.N. T1 - Flux pinning effects of Y2O3 nanoparticulate dispersions in multilayered YBCO thin films JO - Physica C JF - Physica C Y1 - 2005/06/15/ VL - 423 IS - 1/2 M3 - Article SP - 1 EP - 8 SN - 09214534 AB - Abstract: The flux pinning effects of Y2O3 nanoparticulate inclusions in YBa2Cu3O7−δ (Y123 or YBCO) thin films using (Y2O3/Y123)× N multilayer structures were studied. The multilayer films were made with pulsed laser deposition (PLD) on SrTiO3 and LaAlO3 substrates with a Y2O3 nanoparticulate ‘pseudo-layer’ thickness ranging from 0.2 to 1.4nm, and YBCO layer thickness varying from 7 to 50nm. Scanning electron microscopy images showed well-defined nanoparticle formation on film surfaces, with an approximate number density of (0.8–1.6)×1011 particles/cm2 depending on Y2O3 thickness. Minor reductions in the critical temperature (T c) were measured for each increase in Y2O3 pseudo-layer thickness. Transport critical currents (77K, self-field) of 3–5MA/cm2 were consistently achieved for composite films with ⩽0.6nm Y2O3 pseudo-layer thicknesses. Magnetic J c measurements using vibrating sample magnetometry (H ⩽9T, @70 and 77K) showed a degradation of film properties for Y2O3 pseudo-layer thickness greater than 0.6nm. A comparison to Y211/Y123 multilayer films showed the thinner Y2O3 pseudo-layer films exhibited similar properties. [Copyright &y& Elsevier] AB - Copyright of Physica C is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUX pinning KW - NANOPARTICLES KW - DISLOCATIONS in crystals KW - POINT defects KW - Critical current density KW - Flux pinning KW - Multilayers KW - Yttrium oxide (Y2O3) N1 - Accession Number: 17952496; Campbell, T.A. 1 Haugan, T.J. 1 Maartense, I. 2 Murphy, J. 2 Brunke, L. 2 Barnes, P.N. 1; Email Address: paul.barnes@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Propulsion Directorate, AFRL/PRPG, 1950 Fifth Street, Building 450, Wright-Patterson AFB, OH 45433, USA 2: University of Dayton Research Institute, Dayton, OH, USA; Source Info: Jun2005, Vol. 423 Issue 1/2, p1; Subject Term: FLUX pinning; Subject Term: NANOPARTICLES; Subject Term: DISLOCATIONS in crystals; Subject Term: POINT defects; Author-Supplied Keyword: Critical current density; Author-Supplied Keyword: Flux pinning; Author-Supplied Keyword: Multilayers; Author-Supplied Keyword: Yttrium oxide (Y2O3); Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.physc.2004.09.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17952496&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lipscomb, John C. AU - Mattie, David AU - Dodd, Darol E. T1 - Introduction. JO - Journal of Toxicology & Environmental Health: Part A JF - Journal of Toxicology & Environmental Health: Part A Y1 - 2005/06/11/ VL - 68 IS - 11/12 M3 - Article SP - 833 EP - 836 SN - 15287394 AB - Introduces articles related to toxicology published in the June 2005 issue of the "Journal of Toxicology and Environmental Health, Part A." KW - TOXICOLOGY KW - PERIODICALS N1 - Accession Number: 17321620; Lipscomb, John C. 1; Email Address: lipscomb.john@epa.gov Mattie, David 2; Email Address: david.mattie@wpafb.af.mil Dodd, Darol E. 3; Email Address: darol.dodd@wpafb.af.mil; Affiliation: 1: National Center for Environmental Assessment Office of Research and Development U.S. Environmental Protection Agency Cincinnati, Ohio, USA 2: Human Effectiveness Directorate Biosciences and Protection Division Air Force Research Laboratory Wright-Patterson AFB, Ohio, USA 3: ManTech Environmental Technology, Inc. Wright-Patterson AFB, Ohio, USA; Source Info: 2005, Vol. 68 Issue 11/12, p833; Subject Term: TOXICOLOGY; Subject Term: PERIODICALS; NAICS/Industry Codes: 414420 Book, periodical and newspaper merchant wholesalers; NAICS/Industry Codes: 323119 Other printing; NAICS/Industry Codes: 424920 Book, Periodical, and Newspaper Merchant Wholesalers; NAICS/Industry Codes: 451212 News Dealers and Newsstands; NAICS/Industry Codes: 451310 Book stores and news dealers; Number of Pages: 4p; Document Type: Article L3 - 10.1080/15287390590912144 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17321620&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martinez, S.A. AU - Sathish, S. AU - Blodgett, M.P. AU - Mall, S. AU - Namjoshi, S. T1 - Effects of fretting fatigue on the residual stress of shot peened Ti–6Al–4V samples JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2005/06/10/ VL - 399 IS - 1/2 M3 - Article SP - 58 EP - 63 SN - 09215093 AB - Abstract: X-ray diffraction residual stress measurement has been utilized as nondestructive tool for the characterization of fretting fatigue damage in shot peened samples of Ti–6Al–4V. Prior to fretting fatigue damage, compressive residual stresses were found to be uniform over the entire face of the sample and independent of the measurement direction. After fretting fatigue, inside and in the vicinity of the fretting damage zone large relaxation of compressive residual stress was observed. An anisotropic residual stress distribution has been observed in the fretting fatigue damaged region. Residual stress measurements in interrupted fretting fatigue experiments showed that the relaxation of residual stress increases as the number of fretting fatigue cycles increase. The results are discussed in the light of their importance in establishing X-ray diffraction residual stress measurement technique as a nondestructive tool to characterize fretting fatigue damage. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESIDUAL stresses KW - STRAINS & stresses (Mechanics) KW - METALS -- Finishing KW - DEFORMATIONS (Mechanics) KW - STRESS concentration KW - Fretting fatigue KW - Residual stress KW - Shot peening KW - X-ray diffraction N1 - Accession Number: 18213899; Martinez, S.A. 1; Email Address: sonia.martinez@wpafb.af.mil Sathish, S. 1,2 Blodgett, M.P. 1 Mall, S. 1 Namjoshi, S. 3; Affiliation: 1: Air Force Research Laboratory, Wright Patterson Air Force Base, Materials and Manufacturing Directorate, 2230 Tenth Street, OH 45433, USA 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45467-0127, USA 3: Air Force Institute of Technology, Wright Patterson Air Force Base, OH 45433, USA; Source Info: Jun2005, Vol. 399 Issue 1/2, p58; Subject Term: RESIDUAL stresses; Subject Term: STRAINS & stresses (Mechanics); Subject Term: METALS -- Finishing; Subject Term: DEFORMATIONS (Mechanics); Subject Term: STRESS concentration; Author-Supplied Keyword: Fretting fatigue; Author-Supplied Keyword: Residual stress; Author-Supplied Keyword: Shot peening; Author-Supplied Keyword: X-ray diffraction; NAICS/Industry Codes: 332813 Electroplating, Plating, Polishing, Anodizing, and Coloring; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.msea.2005.02.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18213899&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sathish, Shamachary AU - Moran, Thomas J. AU - Martin, Richard W. AU - Reibel, Richard T1 - Residual stress measurement with focused acoustic waves and direct comparison with X-ray diffraction stress measurements JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2005/06/10/ VL - 399 IS - 1/2 M3 - Article SP - 84 EP - 91 SN - 09215093 AB - Abstract: The technique of measuring small changes in acoustic wave velocity due to external or internal stress has been used for quantitative determination of residual stress in materials during the last decade. Application of similar methodology with focused acoustic waves leads to residual stress measurement with spatial resolution of a few millimeters to a few microns. The high spatial resolution residual stress measurement required development of new methodologies in both the design of acoustic lenses and the instrumentation for acoustic wave velocity determination. This paper presents two new methodologies developed for the measurement of residual stress with spatial resolution of a few millimeters. The design of new type of acoustic lens for achieving higher spatial resolution in residual stress measurement is introduced. Development of instrumentation for high precision local surface wave velocity measurement will be presented. Residual stresses measured around a crack tip in a sample of Ti–6A1–4V using a focused beam will be compared with X-ray diffraction measurements performed on the same region of the sample. Results of residual stress measurements along a direction perpendicular to the electron beam weld in a sample of Ti–6A1–4V, determined using focused acoustic waves and X-ray diffraction technique, are also presented. The spatial resolution and penetration depth of X-rays and focused acoustic beams with reference to residual stress measurements are discussed. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESIDUAL stresses KW - METALS -- Heat treatment KW - WELDING KW - SURFACE energy KW - BLACKSMITHING KW - Acoustic waves KW - Residual stress KW - X-ray diffraction N1 - Accession Number: 18213902; Sathish, Shamachary 1; Email Address: shamachary.sathish@wpafb.af.mil Moran, Thomas J. 1 Martin, Richard W. 2 Reibel, Richard 2; Affiliation: 1: Metals, Ceramics and Nondestructive Evaluation Division, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH, USA 2: 300 College Park, University of Dayton Research Institute, Dayton, OH 45469-0127, USA; Source Info: Jun2005, Vol. 399 Issue 1/2, p84; Subject Term: RESIDUAL stresses; Subject Term: METALS -- Heat treatment; Subject Term: WELDING; Subject Term: SURFACE energy; Subject Term: BLACKSMITHING; Author-Supplied Keyword: Acoustic waves; Author-Supplied Keyword: Residual stress; Author-Supplied Keyword: X-ray diffraction; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 238190 Other Foundation, Structure, and Building Exterior Contractors; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.msea.2005.02.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18213902&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Viggiano, A. A. AU - Ehlerding, A. AU - Hellberg, F. AU - Thomas, R. D. AU - Zhaunerchyk, V. AU - Geppert, W. D. AU - Montaigne, H. AU - Larsson, M. AU - Kaminska, M. AU - Österdahl, F. T1 - Rate constants and branching ratios for the dissociative recombination of CO2+. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2005/06/08/ VL - 122 IS - 22 M3 - Article SP - 226101 PB - American Institute of Physics SN - 00219606 AB - Product branching ratios and thermal rate coefficients for the dissociative recombination of CO2+ have been measured in the cryogenic ion source ring ion storage ring. The rate constants were found to be 4.2×10-7(Te/300)-0.75 cm3 s-1. The 300-K result is in agreement with previous flowing afterglow values and is somewhat smaller than a recent determination made at the Aarhas storage ring in Denmark (ASTRID) storage ring. The electron temperature dependence is, however, in good agreement with the ASTRID result of T-0.8. The present results show that only CO plus O are formed, other product branching ratios are zero within experimental error. This is in contradiction to the ASTRID results which show that 9% of the reactivity goes to C+O2. The new results show that the C+O2 channel does not need to be included in the models of the ionospheres of Venus and Mars. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STORAGE rings KW - PARTICLE accelerators KW - ELECTRIC discharges through gases KW - AFTERGLOW (Physics) KW - BRANCHING ratios (Nuclear physics) KW - ELECTRON temperature N1 - Accession Number: 17404478; Viggiano, A. A. 1 Ehlerding, A. 2 Hellberg, F. 2 Thomas, R. D. 2 Zhaunerchyk, V. 2 Geppert, W. D. 2 Montaigne, H. 2 Larsson, M. 2 Kaminska, M. 3 Österdahl, F. 4; Email Address: asinha@ucsd.edu; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base (AFB), Massachusetts 01731 2: Department of Physics, Stockholm University, AlbaNova University Center, 106 91 Stockholm, Sweden 3: Institute of Physics, Swietokrzyska Academy, uliczny Swietokrzyska 15, PL-25 406, Poland 4: Department of Physics, Royal Institute of Technology, AlbaNova University Center, 106 91 Stockholm, Sweden; Source Info: 6/8/2005, Vol. 122 Issue 22, p226101; Subject Term: STORAGE rings; Subject Term: PARTICLE accelerators; Subject Term: ELECTRIC discharges through gases; Subject Term: AFTERGLOW (Physics); Subject Term: BRANCHING ratios (Nuclear physics); Subject Term: ELECTRON temperature; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; Number of Pages: 3p; Illustrations: 2 Graphs; Document Type: Article L3 - 10.1063/1.1926283 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17404478&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yajun Wei AU - Hood, Andrew AU - Haiping Yau AU - Gin, Aaron AU - Razeghi, Manijeh AU - Tidrow, Meimei Z. AU - Nathan, Vaidya T1 - Uncooled operation of type-II InAs/GaSb superlattice photodiodes in the midwavelength infrared range. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/06/06/ VL - 86 IS - 23 M3 - Article SP - 233106 PB - American Institute of Physics SN - 00036951 AB - We report high performance uncooled midwavelength infrared photodiodes based on interface-engineered InAs/GaSb superlattice. Two distinct superlattices were designed with a cutoff wavelength around 5 μm for room temperature and 77 K. The device quantum efficiency reached more than 25% with responsivity around 1 A/W. Detectivity was measured around 109 cm Hz1/2/W at room temperature and 1.5×1013 cm Hz1/2/W at 77 K under zero bias. The devices were without antireflective coating. The device quantum efficiency stays at nearly the same level within this temperature range. Additionally, Wannier–Stark oscillations in the Zener tunneling current were observed up to room temperature. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTODIODES KW - INDIUM arsenide KW - GALLIUM compounds KW - SURFACE coatings KW - OSCILLATIONS N1 - Accession Number: 17328438; Yajun Wei 1 Hood, Andrew 1 Haiping Yau 1 Gin, Aaron 1 Razeghi, Manijeh 1; Email Address: razeghi@ece.northwestern.edu Tidrow, Meimei Z. 2 Nathan, Vaidya 3; Affiliation: 1: Center for Quantum Devices, Department of Electrical and Computer Engineering, Northwestern University, Evanston, Illinois 60208 2: Missile Defense Agency, 7100 Defense Pentagon, Washington, D.C. 20301 3: Air Force Research Laboratory/VSSS, Kirtland Air Force Base, New Mexico 87117; Source Info: 6/6/2005, Vol. 86 Issue 23, p233106; Subject Term: PHOTODIODES; Subject Term: INDIUM arsenide; Subject Term: GALLIUM compounds; Subject Term: SURFACE coatings; Subject Term: OSCILLATIONS; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 3p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.1947908 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17328438&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sumption, Mike D. AU - Barnes, Paul N. AU - Collings, Edward W. T1 - AC Losses of Coated Conductors in Perpendicular Fields and Concepts for Twisting. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 2815 EP - 2818 SN - 10518223 AB - AC losses for striped and unstriped YBCO coated conductors are presented. The loss for a sample subdivided into 10 filaments is shown to he reduced by the expected factor of 10. Various concepts for introducing strand twisting are investigated, and some estimates are given for their superconductive filling factors and the resulting twisting-induced strain. Additionally, the concept of winding induced effective twist is described, and the effective induced twist pitch is shown to be approximately two times the length of the winding. The influence of end-soldering of the strands is described, and simple estimates of the coupling losses are given for a striped strand with soldered ends in conjunction with an effective induced twist. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductors KW - ELECTRIC currents KW - ELECTRIC transformers KW - CRITICAL currents KW - EARTH currents KW - MAGNETIC couplings KW - AC losses KW - striping KW - twisting KW - YBCO N1 - Accession Number: 17429943; Sumption, Mike D. 1; Email Address: mdsumptin+@osu.edu Barnes, Paul N. 2 Collings, Edward W. 1; Affiliation: 1: LASM, Materials Science and Engineering Department, OSU, Columbus, OH 43210 USA. 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA.; Source Info: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p2815; Subject Term: ELECTRIC conductors; Subject Term: ELECTRIC currents; Subject Term: ELECTRIC transformers; Subject Term: CRITICAL currents; Subject Term: EARTH currents; Subject Term: MAGNETIC couplings; Author-Supplied Keyword: AC losses; Author-Supplied Keyword: striping; Author-Supplied Keyword: twisting; Author-Supplied Keyword: YBCO; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 335311 Power, Distribution, and Specialty Transformer Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TASC.2005.848233 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17429943&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Majoros, M. AU - Glowacki, B. A. AU - Campbell, A. M. AU - Levin, G. A. AU - Barnes, P. N. AU - Polak, M. T1 - AC Losses in Striated YBCO Coated Conductors. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 2819 EP - 2822 SN - 10518223 AB - We measured AC losses in RABiTS nonstriated as well as striated coated conductors provided by the US Air Force Research Laboratory. In addition, samples with different kinds of well defined inter-filament bridging have been measured and their losses compared with those of samples with unbridged filaments and with mono-layer samples. This bridging is designed to aid current sharing between filaments, which is advantageous, but it is necessary to determine if the effect on AC losses is detrimental. It was found that AC losses of striated samples with multiple bridges are higher than those of the samples with no bridges due to significant filament coupling but even so the losses are still substantially lower than those of a monolayer sample. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALTERNATING currents KW - ELECTRIC currents KW - METAL fibers KW - ELECTRIC conductors KW - UNITED States. Air Force. Research Laboratory KW - UNITED States KW - AC losses KW - coated conductors KW - RABiTS KW - superconductors N1 - Accession Number: 17429944; Majoros, M. 1; Email Address: mm293@cam.ac.uk Glowacki, B. A. 1,2; Email Address: bag10@cam.ac.uk Campbell, A. M. 1; Email Address: amcl@cam.ac.uk Levin, G. A. 3; Email Address: George.Levin@wpafb.af.mil Barnes, P. N. 3; Email Address: paul.barnes@wpafb.af.mil Polak, M. 4; Email Address: milan.polak@savba.sk; Affiliation: 1: IRC, Superconductivity University of Cambridge CB3 0HE Cambridge U.K. 2: Department of Materials Science and Metallurgy University of Cambridge, CB2 3QZ Cambridge, U.K. 3: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA. 4: Institute of Electrical Engineering, Slovak Academy of Sciences, Bratislava Slovak Republic.; Source Info: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p2819; Subject Term: ALTERNATING currents; Subject Term: ELECTRIC currents; Subject Term: METAL fibers; Subject Term: ELECTRIC conductors; Subject Term: UNITED States. Air Force. Research Laboratory; Subject Term: UNITED States; Author-Supplied Keyword: AC losses; Author-Supplied Keyword: coated conductors; Author-Supplied Keyword: RABiTS; Author-Supplied Keyword: superconductors; Number of Pages: 4p; Document Type: Article L3 - 10.1l09/TASC.2005.848234 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17429944&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barnes, Paul N. AU - Levin, George A. AU - Varanasi, Chakrapani AU - Sumption, Michael D. T1 - Low AC Loss Structures in YBCO Coated Conductors With Filamentary Current Sharing. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 2827 EP - 2830 SN - 10518223 AB - Architectural design improvements, such as filamentation, to YBa2 Cu3 O7-x (YBCO) coated conductors can result in a more ac-tolerant version of the conductor. However, finely made striations in the conductor make filament breakage more probable. In this case, weakly linking the filaments can enable current sharing among the filaments of striated coated conductors while maintaining reduced hysteretic losses. Data is presented for a YBCO sample divided into superconducting filaments separated such that the transverse critical current density of the striation is significantly less than the longitudinal critical current density along the filaments. A LAO substrate was physically scribed with parallel incisions to adversely affect the subsequent epitaxial growth of the YBCO layer between the striations. Vibrating sample magnetometry measurements verified a reduction in hysteretic loss compared to a control sample of epitaxially grown YBCO on an unscribed LAO substrate. Since filamentation requires a twist in the conductor for practical applications, a discussion is also given outlining an alternate means of accomplishing this by placing a twist in the coated conductor architecture itself. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductors KW - ELECTRIC currents KW - STRUCTURAL design KW - SUPERCONDUCTIVITY KW - CRITICAL currents KW - MAGNETISM KW - AC losses KW - current sharing KW - hysteretic & coupling losses KW - YBCO coated conductor N1 - Accession Number: 17429946; Barnes, Paul N. 1; Email Address: paul.barnes@wpafb.af.mil Levin, George A. 1; Email Address: george.levin@wpafb.af.mil Varanasi, Chakrapani Sumption, Michael D. 2; Email Address: mdsumption+@osu.edu; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA. 2: Ohio State University, Columbus, OH 43210 USA.; Source Info: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p2827; Subject Term: ELECTRIC conductors; Subject Term: ELECTRIC currents; Subject Term: STRUCTURAL design; Subject Term: SUPERCONDUCTIVITY; Subject Term: CRITICAL currents; Subject Term: MAGNETISM; Author-Supplied Keyword: AC losses; Author-Supplied Keyword: current sharing; Author-Supplied Keyword: hysteretic & coupling losses; Author-Supplied Keyword: YBCO coated conductor; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TASC.2005.848236 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17429946&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, L. B. AU - Selby, P. AU - Khanal, C. AU - Levin, George AU - Haugan, Timothy J. AU - Barnes, Paul N. AU - Kwon, C. T1 - The Distribution of Transport Current in YBCO Coated Conductor With Zipper Striations. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 2950 EP - 2953 SN - 10518223 AB - An YBCO coated conductor with a zipper pattern striation is investigated by scanning laser microscopy (SLM). The distribution of transport current deduced from the VTSLM images shows that striations act as artificial harriers forcing the current to flow around them. Current sharing and redistribution are observed at the zipper area. We find the major dissipation mechanism in the sample in the superconducting state to be the current crowding at bottleneck areas. The bottleneck seems to be caused by the disabled filaments at and around the zipper area. Some filaments show the dissipation away from the zipper area. In general, we find that the lower Jc* areas have lower Tc* and high δVm, which we consider as a sign of the current crowding. For the first time, we have demonstrated that there is a high temperature signature of the lower Jc* (high dissipation) area and VTSLM can detect the signature. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductors KW - CRITICAL currents KW - HIGH temperatures KW - SUPERCONDUCTORS KW - ELECTRIC currents KW - MICROSCOPY KW - Critical current density KW - the distribution of transport current KW - YBCO coated conductor KW - zipper striations N1 - Accession Number: 17429977; Wang, L. B. 1; Email Address: wanglb1@yahoo.com Selby, P. 1; Email Address: pselby@mail.nmusd.k12.ca.us Khanal, C. 1; Email Address: ckhanal@gmail.com Levin, George 2; Email Address: george.levin@wpafb.af.mil Haugan, Timothy J. 2; Email Address: timothy.haugan@wpafb.af.mil Barnes, Paul N. 2; Email Address: paul.barnes@wpafb.af.mil Kwon, C. 1; Email Address: ckwon@csulb.edu; Affiliation: 1: Department of Physics and Astronomy, California State University, Long Beach, CA 90840 USA. 2: Air Force Research Laboratory, WPAFB, OH 45433-7919 USA.; Source Info: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p2950; Subject Term: ELECTRIC conductors; Subject Term: CRITICAL currents; Subject Term: HIGH temperatures; Subject Term: SUPERCONDUCTORS; Subject Term: ELECTRIC currents; Subject Term: MICROSCOPY; Author-Supplied Keyword: Critical current density; Author-Supplied Keyword: the distribution of transport current; Author-Supplied Keyword: YBCO coated conductor; Author-Supplied Keyword: zipper striations; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TASC.2005.848670 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17429977&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sathiraju, Srinivas AU - Barnes, Paul N. AU - Varanasi, Chakrapafli AU - Wheeler, Robert T1 - Studies on Ba2YNbO6 Buffer Layers for Subsequent YBa2Cu3O7-δ Film Growth. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 3009 EP - 3012 SN - 10518223 AB - In this paper, we are reporting a dielectric oxide buffer Ba2 YNbO6 (BYNO) and its performance on various substrates for a potential buffer layer for the growth of YBa2Cu3O7-x (YBCO) coated conductors. Ba2YNbO6 is a moderate dielectric. Using pulsed laser deposition, epitaxial BYNO films were grown at 850° C with an oxygen pressure of 200 mTorr on single crystal MgO (100) substrate and ion beam assisted sputter deposited MgO buffered hastelloy metal substrates. The surface morphology of the BYNO films reveals out growths even though the average surface roughness is only 2-8 nm. The texture of BYNO films is ∼ 8° and thickness of these layers ∼ 100 nm on metal substrates. Highly c-axis oriented YBCO films were deposited on BYNO buffered substrates. Critical transition temperatures (Tc0) determined from electrical transport measurements vary between 88-89 K and corresponding critical current densities (Jc) ranging from 0.5-1 MA/cm² at 77 K. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COATING processes KW - PULSED laser deposition KW - SURFACES (Technology) KW - ELECTRIC currents KW - SUPERCONDUCTIVITY KW - SURFACE coatings KW - Buffer layer KW - BYNO film KW - coated conductors KW - IBAD KW - YBCO film N1 - Accession Number: 17429992; Sathiraju, Srinivas 1; Email Address: srinivas.sathiraju@wpafb.af.mil Barnes, Paul N. 2; Email Address: paul.barnes@wpath.af.mil Varanasi, Chakrapafli 3; Email Address: chakrapani.varanasi@wpafb.af.mil Wheeler, Robert 4; Email Address: robert.wheeler@wpafb.af.mil; Affiliation: 1: National Academy of Sciences and Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433 USA. 2: Propulsion Research, Air Force Research Laboratory, Wright-Patterson Air Force Ease, OH 45433 USA. 3: University of Dayton Research Institute and Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA. 4: UES Inc., and Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433 USA.; Source Info: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p3009; Subject Term: COATING processes; Subject Term: PULSED laser deposition; Subject Term: SURFACES (Technology); Subject Term: ELECTRIC currents; Subject Term: SUPERCONDUCTIVITY; Subject Term: SURFACE coatings; Author-Supplied Keyword: Buffer layer; Author-Supplied Keyword: BYNO film; Author-Supplied Keyword: coated conductors; Author-Supplied Keyword: IBAD; Author-Supplied Keyword: YBCO film; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TASC.2005.848703 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17429992&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Varanasi, C. V. AU - Tolliver, J. C. AU - Haugan, T. J. AU - Sathiraju, Srinivas AU - Maartense, I. AU - Barnes, P. N. T1 - Nd-Doped YBa2Cu3O7-x Films Deposited by Pulsed Laser Ablation. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 3722 EP - 3725 SN - 10518223 AB - Nd doped YBa2Cu3O7-x targets (NdxY1-xBa2Cu3 O7-x; x = 0, 0.2, 0.4, 1) were prepared in-house and were used to deposit films by pulsed laser ablation in 300 mTorr of oxygen to study the Nd substitution effects on the film properties. Film composition was found to match very closely to the composition of the targets as determined from X-ray photoelectron spectroscopy. The critical transition temperature (Ta) was found to be reduced as the Nd substitutions were increased in the films. Raman spectra taken from the films indicate that c-axis misalignment and some cation disorder may be present in the films with poor Tc. Transport critical current density (Jc) of 3 × 106 A/cm² was measured in Nd0.4Y0.6Ba2Cu3O7-x films. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER ablation KW - ELECTRIC currents KW - SUPERCONDUCTIVITY KW - PHOTOELECTRONS KW - SPECTRUM analysis KW - RAMAN effect KW - LASERS -- Industrial applications KW - Coated conductors KW - Nd substitutions KW - pulsed laser ablation KW - rare earth pinning KW - YBCO N1 - Accession Number: 17430170; Varanasi, C. V. 1; Email Address: cbakrapani.varanasi@wpafb.af.mil Tolliver, J. C. 2 Haugan, T. J. 2 Sathiraju, Srinivas 3 Maartense, I. 1 Barnes, P. N. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469-0176 USA. 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433 USA. 3: National Research Council.; Source Info: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p3722; Subject Term: LASER ablation; Subject Term: ELECTRIC currents; Subject Term: SUPERCONDUCTIVITY; Subject Term: PHOTOELECTRONS; Subject Term: SPECTRUM analysis; Subject Term: RAMAN effect; Subject Term: LASERS -- Industrial applications; Author-Supplied Keyword: Coated conductors; Author-Supplied Keyword: Nd substitutions; Author-Supplied Keyword: pulsed laser ablation; Author-Supplied Keyword: rare earth pinning; Author-Supplied Keyword: YBCO; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TASC.2005.849414 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17430170&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kell, Joseph W. AU - Haugan, Timothy J. AU - Locke, Mary Frances AU - Barnes, Paul N. T1 - Tb and Ce Doped Y123 Films Processed by Pulsed Laser Deposition. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 3726 EP - 3729 SN - 10518223 AB - To evaluate possible flux pinning enhancement in YBa2Cu3O7-x (Y123) films due to partial rare-earth ion substitutions, Ce and Tb doping are studied. Bulk ceramic targets of varying compositions (Y1-xRExBa2Cu3O7-x) were made with several doping levels (x = 0.00 1 to 0.1, RE = Ce or Tb) by using regular solid-state reaction and sintering procedures. These targets were used to deposit Ce and Tb doped YBCO films onto SrTiO3 single crystal substrates by pulsed laser ablation. Doped YBCO films were characterized for Tc, magnetic field dependence of Jc (at 77 K), microstructure, and other properties. The results are compared to undoped YBCO films processed in similar manner. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PULSED laser deposition KW - FLUX pinning KW - MAGNETIC fields KW - COATING processes KW - DISLOCATIONS in crystals KW - FIELD theory (Physics) KW - High-temperature superconductors KW - magneti field measurement KW - superconducting materials KW - thin films N1 - Accession Number: 17430171; Kell, Joseph W. 1; Email Address: joseph.kell@wpafb.af.mil Haugan, Timothy J. 1; Email Address: timothy.haugan@wpafb.af.mil Locke, Mary Frances 1; Email Address: mary.locke@wpafb.af.mil Barnes, Paul N. 1; Email Address: paul.barnes@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, WPAFB, OH 45433-7919 USA.; Source Info: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p3726; Subject Term: PULSED laser deposition; Subject Term: FLUX pinning; Subject Term: MAGNETIC fields; Subject Term: COATING processes; Subject Term: DISLOCATIONS in crystals; Subject Term: FIELD theory (Physics); Author-Supplied Keyword: High-temperature superconductors; Author-Supplied Keyword: magneti field measurement; Author-Supplied Keyword: superconducting materials; Author-Supplied Keyword: thin films; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TASC.2005.849415 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17430171&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barnes, Paul N. AU - Haugan, Timothy J. AU - Sumption, Michael D. AU - Harrison, B. Craig T1 - Pinning Enhancement of YBa2Cu3O7-d Thin Films With Y2BaCuO5 Nanoparticulates. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 3766 EP - 3769 SN - 10518223 AB - A comparison study is given of a typical superconducting YBa2Cu3O7-d (Y123) film and a Y123 film containing a nonsuperconducting Y2BaCuO5 (Y211) phase nanoparticulate dispersion. The inclusion of the second phase nanoparticulates was for the express purpose of increasing superconducting film's magnetic pinning strength with the resultant improved in-field critical current density. LaAlO3 substrates were used and the Y123 and Y211 nanoparticulates were grown by pulsed laser deposition (PLD). The Y211 nanoparticulate dispersion in the Y123 resulted from multiple consecutive depositions by PLD of the respective targets. The Y123 phase maintained excellent epitaxy with high in-plane orientation with and without the Y211 inclusions. With the Y211 additions, the critical current densities of the films increased significantly in applied magnetic fields as compared to the high quality Y123 film with no Y211 additions. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC fields KW - PULSED laser deposition KW - THIN films KW - SURFACES (Technology) KW - FLUX pinning KW - SUPERCONDUCTIVITY KW - COATING processes KW - Flux Pinning KW - nanoparticulates KW - Y2BaCuO5 KW - YBCO N1 - Accession Number: 17430181; Barnes, Paul N. 1; Email Address: paul.barnes@wpafb.af.mil Haugan, Timothy J. 1; Email Address: timothy.haugan@wpafb.af.mil Sumption, Michael D. 2; Email Address: mdsumptin+@osu.edu Harrison, B. Craig 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA. 2: Summer Faculty, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA.; Source Info: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p3766; Subject Term: MAGNETIC fields; Subject Term: PULSED laser deposition; Subject Term: THIN films; Subject Term: SURFACES (Technology); Subject Term: FLUX pinning; Subject Term: SUPERCONDUCTIVITY; Subject Term: COATING processes; Author-Supplied Keyword: Flux Pinning; Author-Supplied Keyword: nanoparticulates; Author-Supplied Keyword: Y2BaCuO5; Author-Supplied Keyword: YBCO; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TASC.2005.849426 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17430181&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, Timothy J. AU - Barnes, Paul N. AU - Campbell, Timothy A. AU - Evans, Julianna M. AU - Kell, Joseph W. AU - Brunke, Lyle B. AU - Murphy, John P. AU - Varanasi, Chakrapani AU - Maartense, Iman AU - Wong-Ng, Winnie AU - Cook, Lawrence P. T1 - Addition of Alternate Phase Nanoparticle Dispersions to Enhance Flux Pinning of Y-Ba-Cu-O Thin Films. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2005/06/03/Jun2005 Part 3 of 3 VL - 15 IS - 2 M3 - Article SP - 3770 EP - 3773 SN - 10518223 AB - Nanoparticle dispersions of various phases were added to YBa2Cu3O7-x (YBCO or 123) thin films by multilayer pulsed laser deposition, to determine their effect on flux pinning. The different pinning materials examined include Y2BaCuO2 (Y211 or green-phase), La2BaCuO2 (La211 or brown-phase), Y2O3, CeO2, and MgO, with lattice constant mismatches varying from 0.5% to 12% with respect to YBCO. Y211 and Y2O3 provided significant pinning increases at temperatures of 65 K and 77 K, however other phases provided enhancements only at 65 K (for CeO2 and La211) for limited range of applied field strengths. An interesting correlation between Tc transition widths and pinning strengths was observed. The additions produced markedly different nanoparticle and film microstructures, as well as superconducting properties. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUX pinning KW - NANOPARTICLES KW - PULSED laser deposition KW - THIN films KW - PARTICLES KW - DISLOCATIONS in crystals KW - MICROSTRUCTURE KW - MATERIALS KW - Flux pinning KW - high temperature superconductor KW - nanoparticle KW - YBa2Cu3O7-x thin film N1 - Accession Number: 17430182; Haugan, Timothy J. 1; Email Address: timothy.haugan@wpatb.af.mil Barnes, Paul N. 1 Campbell, Timothy A. 1 Evans, Julianna M. 1 Kell, Joseph W. 1 Brunke, Lyle B. 1 Murphy, John P. 1 Varanasi, Chakrapani 1 Maartense, Iman 1 Wong-Ng, Winnie 2; Email Address: winnie.wong-ng@nist.gov Cook, Lawrence P. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45431 USA. 2: National Institute of Standards and Technology, Gaithersburg, MD 20899-8520 USA.; Source Info: Jun2005 Part 3 of 3, Vol. 15 Issue 2, p3770; Subject Term: FLUX pinning; Subject Term: NANOPARTICLES; Subject Term: PULSED laser deposition; Subject Term: THIN films; Subject Term: PARTICLES; Subject Term: DISLOCATIONS in crystals; Subject Term: MICROSTRUCTURE; Subject Term: MATERIALS; Author-Supplied Keyword: Flux pinning; Author-Supplied Keyword: high temperature superconductor; Author-Supplied Keyword: nanoparticle; Author-Supplied Keyword: YBa2Cu3O7-x thin film; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TASC.2005.849427 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17430182&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Amemiya, Naoyuki AU - Yoda, Keiji AU - Kasai, Satoshi AU - Jiang, Zhenan AU - Levin, George A. AU - Barnes, Paul N. AU - Oberly, Charles E. T1 - AC Loss Characteristics of Multifilamentary YBCO Coated Conductors. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2005/06/02/Jun2005 Part 2 of 3 VL - 15 IS - 2 M3 - Article SP - 1637 EP - 1642 SN - 10518223 AB - One of the methods to reduce magnetization loss of YBCO coated conductors in a perpendicular magnetic field is subdividing the YBCO layer into filaments and twisting them as a whole. A 10 mm wide multifilamentary YBCO coated conductor with 200 μm wide filaments was prepared by striation using the laser ablation technique. The number of filaments was 40. The sample length was varied from 100 mm to 25 mm, and their magnetization loss was measured at various frequencies. The measured magnetization losses were scaled using sample length, frequency, and field amplitude. This clarifies the magnetization loss characteristics of multifilamentary YBCO coated conductors and obtains empirical expressions for the magnetization loss. The measured loss was compared with the loss calculated numerically using a two dimensional FEM model. The experimentally confirmed effect of striation to reduce the magnetization loss was compared with theoretical predictions. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTING magnets KW - MAGNETIZATION KW - MAGNETIC fields KW - ELECTROMAGNETS KW - SUPERCONDUCTORS KW - LASERS -- Industrial applications KW - AC loss KW - multifilament KW - superconductors KW - YB CO N1 - Accession Number: 17400048; Amemiya, Naoyuki 1; Email Address: ame@rain.dnj.ynu.ac.jp Yoda, Keiji 1; Email Address: yoda@rain.dnj.ynu.ac.jp Kasai, Satoshi 1; Email Address: kasai@rain.dnj.ynu.ac.jp Jiang, Zhenan 1; Email Address: kyo@rain.dnj.ynu.ac.jp Levin, George A. 2; Email Address: George.Levin@wpafb.af.mil Barnes, Paul N. 2; Email Address: paul.barnes@wpafb.af.mil Oberly, Charles E. 2; Email Address: charles.oberly@wpafb.af.mil; Affiliation: 1: Yokohama National University, Yokohama 240-8501, Japan. 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 43210 USA.; Source Info: Jun2005 Part 2 of 3, Vol. 15 Issue 2, p1637; Subject Term: SUPERCONDUCTING magnets; Subject Term: MAGNETIZATION; Subject Term: MAGNETIC fields; Subject Term: ELECTROMAGNETS; Subject Term: SUPERCONDUCTORS; Subject Term: LASERS -- Industrial applications; Author-Supplied Keyword: AC loss; Author-Supplied Keyword: multifilament; Author-Supplied Keyword: superconductors; Author-Supplied Keyword: YB CO; NAICS/Industry Codes: 335315 Switchgear and switchboard, and relay and industrial control apparatus manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TASC.2005.849216 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17400048&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Oberly, Charles E. AU - Razidlo, Benjamin AU - Rodriguez, Fernando T1 - Conceptual Approach to the Ultimate Low AC Loss YBCO Superconductor. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2005/06/02/Jun2005 Part 2 of 3 VL - 15 IS - 2 M3 - Article SP - 1643 EP - 1646 SN - 10518223 AB - Wide tapes of YBCO coated conductors make minimization of ac loss very difficult. Subdivision of the tape into narrow filaments does not provide complete transposition when twisted and current sharing is not equalized due to inductance differences. For ac power applications operating near 400 Hz for military aircraft power systems, equal inductance filaments and short twist pitch are very important to loss minimization. A fully transposed YBCO tape that approximates a Rutherford cable has been conceived to minimize ac loss at high frequency. Retention of optimal texture of YBCO in edge turnaround regions and filament crossovers in the Rutherford tape is essential. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTING magnets KW - ELECTRIC inductance KW - ALTERNATING currents KW - AIRPLANES KW - ELECTROMAGNETISM KW - SUPERCONDUCTORS KW - AC loss KW - Rutherford configuration KW - striated filaments KW - YBCO N1 - Accession Number: 17400049; Oberly, Charles E. 1; Email Address: charles.oberly@wpafb.af.mil Razidlo, Benjamin 1 Rodriguez, Fernando 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433 USA.; Source Info: Jun2005 Part 2 of 3, Vol. 15 Issue 2, p1643; Subject Term: SUPERCONDUCTING magnets; Subject Term: ELECTRIC inductance; Subject Term: ALTERNATING currents; Subject Term: AIRPLANES; Subject Term: ELECTROMAGNETISM; Subject Term: SUPERCONDUCTORS; Author-Supplied Keyword: AC loss; Author-Supplied Keyword: Rutherford configuration; Author-Supplied Keyword: striated filaments; Author-Supplied Keyword: YBCO; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TASC.2005.849219 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17400049&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Levin, George A. AU - Barnes, Paul N. T1 - Concept of Multiply Connected Superconducting Tapes. JO - IEEE Transactions on Applied Superconductivity JF - IEEE Transactions on Applied Superconductivity Y1 - 2005/06/02/Jun2005 Part 2 of 3 VL - 15 IS - 2 M3 - Article SP - 2158 EP - 2161 SN - 10518223 AB - The possibility of a substantial reduction of weight and size of electrical generators is the main incentive behind the effort to develop superconducting armature windings based on Y1Ba2Cu3O6+x (YBCO) coated conductors in the form of wide tapes with large aspect ratio. The main obstacle to the application of coated superconductors in stator windings is the large losses incurred due to the ac magnetic field produced by the rotor's dc coils of the field windings. In the range of frequencies typical for aircraft generators, the hysteretic losses in wide tapes are unacceptably high. They can be reduced by dividing the YBCO layer into multiple filaments separated by non-superconducting barriers. However, the lack of current sharing between the filaments makes the conductor vulnerable to the localized defects, so that a single blockage can impede the flow of transport current through the whole length of a given filament. We present estimates of reliability as well as the magnetization losses in multiply connected superconductors. In this type of superconducting tape, a sparse network of superconducting bridges, which allows for current sharing, connects the filaments. The trade-off between the different types of losses and the connectivity requirement imposes restrictions on the number of filaments and properties of the network of bridges. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC generators -- Windings KW - ARMATURES KW - SOLID state electronics KW - SUPERCONDUCTORS KW - ELECTRONIC materials KW - CRYOELECTRONICS KW - Coated superconductors KW - magnetization losses N1 - Accession Number: 17400176; Levin, George A. 1; Email Address: george.levin@wpafb.af.mil Barnes, Paul N. 2; Email Address: paul.barnes@wpafb.af.mil; Affiliation: 1: National Research Council, Bldg. 450, Wright-Patterson AFB, OH 45433 USA. 2: Air Force Research Laboratory, Propulsion Directorate, Bldg. 450, Wright-Patterson AFB, OH 45433 USA.; Source Info: Jun2005 Part 2 of 3, Vol. 15 Issue 2, p2158; Subject Term: ELECTRIC generators -- Windings; Subject Term: ARMATURES; Subject Term: SOLID state electronics; Subject Term: SUPERCONDUCTORS; Subject Term: ELECTRONIC materials; Subject Term: CRYOELECTRONICS; Author-Supplied Keyword: Coated superconductors; Author-Supplied Keyword: magnetization losses; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TASC.2005.849601 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17400176&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buryachenko, V. AU - Roy, A. T1 - Effective thermoelastic moduli and stress concentrator factors in nanocomposites. JO - Acta Mechanica JF - Acta Mechanica Y1 - 2005/06// VL - 177 IS - 1-4 M3 - Article SP - 149 EP - 169 PB - Springer Science & Business Media B.V. SN - 00015970 AB - Nanocomposites are modeled as a linearly elastic composite medium, which consists of a homogeneous matrix containing a statistically homogeneous random field of spheroid nanofibers with prescribed random orientation. An estimation of the effective thermoelastic properties of NC was performed by the effective field method (see Buryachenko, [10]) taking into account the random orientation of nanofibers as well as justified selection of spatial correlations of fiber location. The independent justified choice of shapes of inclusions and correlation holes provides the matrix of effective moduli which is symmetric (in contrast to the Mori-Tanaka approach). One estimates also the effective tensor of thermal expansion and stress concentrator factors depending on the orientation of the fiber being considered as well as on the justified choice of the shape of correlation holes, concentration and orientation distribution functions of nanofibers. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Mechanica is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOELASTICITY KW - CONTINUUM mechanics KW - THERMODYNAMICS KW - ELASTICITY KW - NANOTUBES N1 - Accession Number: 17497960; Buryachenko, V. 1; Email Address: Valeriy.buryachenko@wpafb.af.mil Roy, A. 2; Affiliation: 1: University of Dayton Research Institute, Dayton Ohio 45469-0168 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLBC, Wright Patterson AFB 45433-7750 USA; Source Info: Jun2005, Vol. 177 Issue 1-4, p149; Subject Term: THERMOELASTICITY; Subject Term: CONTINUUM mechanics; Subject Term: THERMODYNAMICS; Subject Term: ELASTICITY; Subject Term: NANOTUBES; Number of Pages: 21p; Document Type: Article L3 - 10.1007/s00707-005-0228-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17497960&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Méchain, G. AU - Méjean, G. AU - Ackermann, R. AU - Rohwetter, P. AU - André, Y.-B. AU - Kasparian, J. AU - Prade, B. AU - Stelmaszczyk, K. AU - Yu, J. AU - Salmon, E. AU - Winn, W. AU - Schlie, L. AU - Mysyrowicz, A. AU - Sauerbrey, R. AU - Wöste, L. AU - Wolf, J.-P. T1 - Propagation of fs TW laser filaments in adverse atmospheric conditions. JO - Applied Physics B: Lasers & Optics JF - Applied Physics B: Lasers & Optics Y1 - 2005/06//Jun2005 Part 1 VL - 80 IS - 7 M3 - Article SP - 785 EP - 789 PB - Springer Science & Business Media B.V. SN - 09462171 AB - The propagation of femtosecond terawatt laser pulses at reduced pressure (0.7 atm) is investigated experimentally. In such conditions, the non-linear refractive index n is reduced by 30%, resulting in a slightly farther filamentation onset and a reduction of the filament number. However, the filamentation process, especially the filament length, is not qualitatively affected. We also show that drizzle does not prevent the filaments from forming and propagating. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics B: Lasers & Optics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FEMTOSECOND pulses KW - LASER pulses KW - FILAMENTATION instability KW - GAUSSIAN beams KW - IONIZATION (Atomic physics) KW - 42.65.Jx N1 - Accession Number: 92039979; Méchain, G. 1 Méjean, G. 2 Ackermann, R. 2 Rohwetter, P. 3 André, Y.-B. 1 Kasparian, J. 2; Email Address: jkaspari@lasim.univ-lyon1.fr Prade, B. 1 Stelmaszczyk, K. 3 Yu, J. 2 Salmon, E. 2 Winn, W. 4 Schlie, L. 5 Mysyrowicz, A. 1 Sauerbrey, R. 6 Wöste, L. 3 Wolf, J.-P. 2; Affiliation: 1: Teramobile, Laboratoire d'Optique Appliquée, UMR CNRS 7639, ENSTA - Ecole Polytechnique , Centre de l'Yvette , Chemin de la Huniére 91761 Palaiseau Cedex France 2: Teramobile, LASIM, UMR CNRS 5579 , Université Claude Bernard Lyon 1 , 43 bd du 11 Novembre 1918 69622 Villeurbanne Cedex France 3: Teramobile, Institut für Experimentalphysik , Freie Universität Berlin , Arnimallee 14 14195 Berlin Germany 4: Langmuir Laboratory for Atmospheric Research, Geophysical Research Center , New Mexico Institute of Mining and Technology , Socorro USA 5: Directed Energy Directorate (AFRL/DELS) , Air Force Research Laboratory , 3550 Aberdeen Blvd Kirtland AFB NM 87117 USA 6: Teramobile, Institut für Optik und Quantenelektronik , Friedrich Schiller Universität , Max-Wien-Platz 1 07743 Jena Germany; Source Info: Jun2005 Part 1, Vol. 80 Issue 7, p785; Subject Term: FEMTOSECOND pulses; Subject Term: LASER pulses; Subject Term: FILAMENTATION instability; Subject Term: GAUSSIAN beams; Subject Term: IONIZATION (Atomic physics); Author-Supplied Keyword: 42.65.Jx; Number of Pages: 5p; Document Type: Article L3 - 10.1007/s00340-005-1825-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=92039979&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Teehee, M. L. AU - Bunning, M. L. AU - Stevens, S. AU - Bowen, R. A. T1 - Experimental infection of pigs with West Nile virus. JO - Archives of Virology JF - Archives of Virology Y1 - 2005/06// VL - 150 IS - 6 M3 - Article SP - 1249 EP - 1256 SN - 03048608 AB - Young adult and weanling pigs were challenged with the New York 99 strain of West Nile virus through the bite of infected mosquitoes. Each of six adult pigs seroconverted, but virus was isolated from serum of only one pig following challenge. Three of five weanling pigs developed viremia, with peak titers of 101.9 and 103.1?PFU/mL. Clinical signs attributable to West Nile virus infection were not observed in any of these animals. An additional four pigs were challenged by feeding West Nile virus-infected mice, and none of the four developed a detectable viremia or seroconverted. These results suggest that pigs are unlikely to play a significant role as amplifying hosts of West Nile virus. [ABSTRACT FROM AUTHOR] AB - Copyright of Archives of Virology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WEST Nile virus KW - FLAVIVIRUSES KW - SWINE KW - VIRUSES KW - MOSQUITOES KW - NEW York (State) N1 - Accession Number: 17090002; Teehee, M. L. 1 Bunning, M. L. 2,3 Stevens, S. 4 Bowen, R. A. 4; Affiliation: 1: Departments of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado, U.S.A. 2: United States Air Force, Office of Surgeon General, Bolling Air Force Base, Washington, DC, U.S.A. 3: Centers for Disease Control and Prevention, Fort Collins, Colorado, U.S.A. 4: Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado, U.S.A.; Source Info: Jun2005, Vol. 150 Issue 6, p1249; Subject Term: WEST Nile virus; Subject Term: FLAVIVIRUSES; Subject Term: SWINE; Subject Term: VIRUSES; Subject Term: MOSQUITOES; Subject Term: NEW York (State); NAICS/Industry Codes: 411110 Live animal merchant wholesalers; NAICS/Industry Codes: 424520 Livestock Merchant Wholesalers; NAICS/Industry Codes: 112210 Hog and Pig Farming; Number of Pages: 8p; Document Type: Article L3 - 10.1007/s00705-004-0478-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17090002&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Thomas M. AU - Ballenthin, John O. AU - Viggiano, A.A. AU - Anderson, Bruce E. AU - Wey, Chowen C. T1 - Mass distribution and concentrations of negative chemiions in the exhaust of a jet engine: Sulfuric acid concentrations and observation of particle growth JO - Atmospheric Environment JF - Atmospheric Environment Y1 - 2005/06// VL - 39 IS - 17 M3 - Article SP - 3069 EP - 3079 SN - 13522310 AB - Abstract: Measurements of negative-ion composition and density have been made in the exhaust of a J85-GE-5H turbojet, at ground level, as part of the NASA-EXCAVATE campaign. The mass spectrometer was placed 3m from the exhaust plane of the engine. Measurements were done as a function of engine power in six steps from idle (50%) to military power (100%). Since the exhaust velocity changes with power, this also corresponds to a time evolution for ion growth. At 100% power most of the ions are HSO4− with minor amounts of HSO4−(H2O) n . With decreasing engine power the degree of hydration increases. In addition, ions with a 139-amu core dominate the spectra at lower engine power. The chemical identity of this ion is unknown. Observation of a small amount of NO3− core ions in the high-power spectra allows the determination of H2SO4 concentrations, which turn out to be a fraction-of-a-percent of the total sulfur in the fuel. Combining the present data with several previous composition measurements allows one to observe ion evolution from bare ions to ions with masses >8000amu. Ion densities are derived and appear consistent with previous measurements used in modeling studies indicating that ion nucleation is a probable mechanism for volatile aerosol formation. [Copyright &y& Elsevier] AB - Copyright of Atmospheric Environment is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONS KW - AEROSOLS (Sprays) KW - SULFURIC acid KW - MASS spectrometers KW - Aerosol growth KW - Ion-induced nucleation KW - Jet engine KW - Mass spectrometer KW - Sulfuric acid N1 - Accession Number: 17953687; Miller, Thomas M. 1 Ballenthin, John O. 1 Viggiano, A.A. 1; Email Address: albert.viggiano@hanscom.af.mil Anderson, Bruce E. 2 Wey, Chowen C. 3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, 29 Randolph Road, Hanscom AFB, MA 01731-3010, USA 2: Atmospheric Sciences Division, National Aeronautics and Space Administration, Langley Research Center, Hampton, VA 23681-0001, USA 3: Engine Components Division, Army Research Laboratory/High Speed Systems Office, National Aeronautics and Space Administration, Glenn Research Center, Cleveland, OH 44135, USA; Source Info: Jun2005, Vol. 39 Issue 17, p3069; Subject Term: IONS; Subject Term: AEROSOLS (Sprays); Subject Term: SULFURIC acid; Subject Term: MASS spectrometers; Author-Supplied Keyword: Aerosol growth; Author-Supplied Keyword: Ion-induced nucleation; Author-Supplied Keyword: Jet engine; Author-Supplied Keyword: Mass spectrometer; Author-Supplied Keyword: Sulfuric acid; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.atmosenv.2005.01.034 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17953687&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Caldwell, John A. AU - Smith, Jennifer K. AU - Caldwell, J. Lynn AU - Brown, David L. AU - Qiwen Mu AU - Mishory, Alexander AU - Peters, Gordon AU - George, Mark S. T1 - Are Individual Differences in Fatigue Vulnerability Related to Baseline Differences in Cortical Activation? JO - Behavioral Neuroscience JF - Behavioral Neuroscience Y1 - 2005/06// VL - 119 IS - 3 M3 - Article SP - 694 EP - 707 SN - 07357044 AB - Recent evidence suggests that underlying patterns of cortical activation may partially account for individual differences in susceptibility to the effects of sleep deprivation. Here, functional magnetic resonance imaging (fMRI) was used to examine the activation of military pilots whose sleep-deprivation vulnerability previously was quantified, A Sternberg Working Memory Task (SWMT; S. Sternberg, 1966) was completed alternately with a control task during a 13-min blood oxygen level-dependent fMRI scan. Examination of the activated voxels in response to SWMT indicated that, as a group, the pilots were more similar to fatigue-resistant nonpilots than to fatigue-vulnerable nonpilots. Within the pilots, cortical activation was significantly related to fatigue vulnerability on simulator-flight performance. These preliminary data suggest that baseline fMRI scan activation during a working memory task may correlate with fatigue susceptibility. [ABSTRACT FROM AUTHOR] AB - Copyright of Behavioral Neuroscience is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE KW - CEREBRAL cortex KW - SLEEP deprivation KW - SHORT-term memory KW - MEMORY KW - aviation KW - fatigue KW - functional magnetic resonance imaging KW - individual differences KW - sleep deprivation N1 - Accession Number: 17649974; Caldwell, John A. 1; Email Address: john.caldwell@brooks.af.mil Smith, Jennifer K. 1 Caldwell, J. Lynn 1 Brown, David L. 2 Qiwen Mu 3 Mishory, Alexander 3 Peters, Gordon 4 George, Mark S. 3; Affiliation: 1: U.S. Air Force Research Laboratory 2: U.S. Air Force School of Aerospace Medicine 3: Medical University of South Carolina 4: Holloman Air Force Base; Source Info: Jun2005, Vol. 119 Issue 3, p694; Subject Term: FATIGUE; Subject Term: CEREBRAL cortex; Subject Term: SLEEP deprivation; Subject Term: SHORT-term memory; Subject Term: MEMORY; Author-Supplied Keyword: aviation; Author-Supplied Keyword: fatigue; Author-Supplied Keyword: functional magnetic resonance imaging; Author-Supplied Keyword: individual differences; Author-Supplied Keyword: sleep deprivation; Number of Pages: 14p; Illustrations: 1 Color Photograph, 6 Charts, 4 Graphs; Document Type: Article L3 - 10.1037/0735-7044.119.3.694 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17649974&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Bertha, Carlos AU - Tyler, David AU - Surber, Larry AU - Niedenfuer, John T1 - Just War? Just a Minute! JO - Free Inquiry JF - Free Inquiry Y1 - 2005/06//Jun/Jul2005 VL - 25 IS - 4 M3 - Letter SP - 12 EP - 13 SN - 02720701 AB - Presents a letter to the editor about obscenity of war. KW - LETTERS to the editor KW - WAR N1 - Accession Number: 17217686; Bertha, Carlos 1 Tyler, David Surber, Larry Niedenfuer, John; Affiliation: 1: Assistant Professor of Philosophy United States Air Force Academy Colorado Springs, Colorado.; Source Info: Jun/Jul2005, Vol. 25 Issue 4, p12; Subject Term: LETTERS to the editor; Subject Term: WAR; Number of Pages: 2p; Document Type: Letter UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17217686&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Best, Steven R. T1 - Correction to "A Discussion on the Quality Factor of Impedance Matched Electrically Small Wire Antennas". JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2005/06// VL - 53 IS - 6 M3 - Correction notice SP - 2133 EP - 2133 SN - 0018926X AB - Presents a correction to the article "A Discussion on the Quality Factor of Impedance Matched Electrically Small Wire Antennas," published in previous issue of the journal "IEEE Transactions on Antennas and Propagation." KW - ELECTRIC impedance N1 - Accession Number: 17394021; Best, Steven R. 1; Email Address: steven.best@comcast.net; Affiliation: 1: Air Force Research Laboratory, Hanscom AFB, MA 01731 USA.; Source Info: Jun2005, Vol. 53 Issue 6, p2133; Subject Term: ELECTRIC impedance; Number of Pages: 1p; Document Type: Correction notice L3 - 10.1109/TAP.2005.848525 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17394021&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rangaswamy, Muralidhar T1 - Statistical Analysis of the Nonhomogeneity Detector for Non-Gaussian Interference Backgrounds. JO - IEEE Transactions on Signal Processing JF - IEEE Transactions on Signal Processing Y1 - 2005/06// VL - 53 IS - 6 M3 - Article SP - 2101 EP - 2111 SN - 1053587X AB - We derive the nonhomogeneity detector (NHD) for non-Gaussian interference scenarios and present a statistical analysis of the method. The non-Gaussian interference scenario is assumed to be modeled by a spherically invariant random process (SIRP). We present a method for selecting representative (homogeneous) training data based on our statistical analysis of the NHD for finite sample support used in covariance estimation. In particular, an exact theoretical expression for the NHD test statistic probability density function (PDF) is derived. Performance analysis of the NHD is presented using both simulated data and measured data from the multichannel airborne radar measurement (MCARM) program. A performance comparison with existing NHD approaches is also included. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Signal Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIGNAL detection KW - ELECTRONICS KW - ELECTRIC interference KW - STATISTICS KW - SIGNAL processing KW - STOCHASTIC processes N1 - Accession Number: 17181092; Rangaswamy, Muralidhar 1; Email Address: Muralidhar.Rangaswamy@hanscomaf.mil; Affiliation: 1: Air Force Research Laboratory/S NHE, Hanscom Air Force Base, MA 0173 1-2909 USA; Source Info: Jun2005, Vol. 53 Issue 6, p2101; Subject Term: SIGNAL detection; Subject Term: ELECTRONICS; Subject Term: ELECTRIC interference; Subject Term: STATISTICS; Subject Term: SIGNAL processing; Subject Term: STOCHASTIC processes; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1 109/TSP.2005.847843 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17181092&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Jason S. AU - Baughn, James W. AU - Byerley, Aaron R. T1 - Surface flow visualization using thermal tufts produced by an encapsulated phase change material JO - International Journal of Heat & Fluid Flow JF - International Journal of Heat & Fluid Flow Y1 - 2005/06// VL - 26 IS - 3 M3 - Article SP - 411 EP - 415 SN - 0142727X AB - Abstract: A new thermal tuft method for flow visualization similar to the laser thermal tuft method is described. The earlier laser thermal tuft method involved heating a spot on a surface with a laser, producing a teardrop temperature distribution on a surface coated with thermochromic liquid crystals. In the present study, thermal tufts are produced by embedding small thermal masses in a low thermal conductivity substrate. When a model is exposed to wind tunnel flow, the embedded thermal masses remain (nearly) isothermal while the thermal tufts appear downstream. The advantage of using embedded thermal masses over previous methods is that no laser or heated base is needed. Multiple tufts can easily be achieved. By using an encapsulated phase change material the phase change between solid and liquid (ice) produces isothermal spots. Images of the surface temperature distributions associated with these thermal tufts were obtained using both liquid crystal and infrared thermography. Flow visualization using these thermal tufts is demonstrated for an impinging jet and on a flat surface in a wind tunnel with crossflow. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Fluid Flow is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - LIGHT sources KW - THERMOGRAPHY KW - INFRARED photography KW - Flow visualization KW - Infrared KW - Liquid crystal KW - Phase change KW - Thermal KW - Tuft N1 - Accession Number: 17663727; Smith, Jason S. 1; Email Address: james.baughn@usafa.af.mil Baughn, James W. 1 Byerley, Aaron R. 2; Affiliation: 1: Department of Mechanical and Aeronautical Engineering, University of California, Davis, CA 95616, USA 2: Department of Aeronautics, US Air Force Academy, Colorado Springs, CO 80840, USA; Source Info: Jun2005, Vol. 26 Issue 3, p411; Subject Term: LIQUID crystals; Subject Term: LIGHT sources; Subject Term: THERMOGRAPHY; Subject Term: INFRARED photography; Author-Supplied Keyword: Flow visualization; Author-Supplied Keyword: Infrared; Author-Supplied Keyword: Liquid crystal; Author-Supplied Keyword: Phase change; Author-Supplied Keyword: Thermal; Author-Supplied Keyword: Tuft; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.ijheatfluidflow.2004.10.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17663727&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rogers, Joy E. AU - Hall, Benjamin C. AU - Hufnagle, David C. AU - Slagle, Jonathan E. AU - Ault, Andrew P. AU - McLean, Daniel G. AU - Fleitz, Paul A. AU - Cooper, Thomas M. T1 - Effect of platinum on the photophysical properties of a series of phenyl-ethynyl oligomers. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2005/06//6/1/2005 VL - 122 IS - 21 M3 - Article SP - 214708 PB - American Institute of Physics SN - 00219606 AB - In this work we detail the photophysical properties of a series of butadiynes having the formula H–(C6H4–C≡C)n–(C≡C–C6H4)n–H, n=1–3 and ligands H–(C6H4–C≡C)n–H, n=1–3 and compare these to previous work done on a complimentary series of platinum-containing complexes having the formula trans-Pt[(PC4H9)3]2[(C≡C–C6H4)n–H]2, n=1–3. We are interested in understanding the role of the platinum in the photophysical properties. We found that there is conjugation through the platinum in the singlet states, but the triplet states show more complex behavior. The T1 exciton, having metal-to-ligand charge-transfer character, is most likely confined to one ligand but the Tn exciton appears to have ligand-to-metal charge-transfer character. The platinum effect was largest when n=1. When n=2–3, the S0-S1,S1-S0,T1-S0, and T1-Tn spectral properties of the platinum complex are less influenced by the metal, becoming equivalent to those of the corresponding butadiynes. When n=1, platinum decreases the triplet state lifetime, but its effect diminishes as n increases to 2. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OLIGOMERS KW - PLATINUM KW - ENERGY levels (Quantum mechanics) KW - LIGANDS KW - LINE geometry KW - BUTADIENE N1 - Accession Number: 17328363; Rogers, Joy E. 1 Hall, Benjamin C. 2 Hufnagle, David C. 3 Slagle, Jonathan E. 4 Ault, Andrew P. 5 McLean, Daniel G. 5 Fleitz, Paul A. 5 Cooper, Thomas M. 5; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433 and UES, Inc., Dayton, Ohio 45432 2: Universal Technology Corporation, Dayton, Ohio 45432 3: Anteon Corporation, Dayton, Ohio 45431 4: AT&T Corporation, Dayton, Ohio 45434 5: Science Applications International Corporation, Dayton, Ohio 45434; Source Info: 6/1/2005, Vol. 122 Issue 21, p214708; Subject Term: OLIGOMERS; Subject Term: PLATINUM; Subject Term: ENERGY levels (Quantum mechanics); Subject Term: LIGANDS; Subject Term: LINE geometry; Subject Term: BUTADIENE; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 8p; Illustrations: 1 Diagram, 3 Charts, 6 Graphs; Document Type: Article L3 - 10.1063/1.1924450 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17328363&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tzou, D. Y. AU - Chen, J. K. AU - Beraun, J. E. T1 - Recent Development of Ultrafast Thermoelasticity. JO - Journal of Thermal Stresses JF - Journal of Thermal Stresses Y1 - 2005/06//Jun/Jul2005 VL - 28 IS - 6/7 M3 - Article SP - 563 EP - 594 PB - Taylor & Francis Ltd SN - 01495739 AB - Ultrafast deformation is caused by intense heating of femtosecond lasers that involve ultrafast energy exchange between electrons and metal lattices in the femto- to picosecond domain. This work outlines unique features including interactions between T-waves and stress waves in the femtosecond domain and the hot-electron blast that can destroy cold lattices before they become thermally excited. Dominating groups are identified to characterize the ultrafast thermomechanical response. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Thermal Stresses is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOELASTICITY KW - NONLINEAR optics KW - LIGHT amplifiers KW - OPTOELECTRONIC devices KW - LIGHT sources KW - CATHODE rays KW - Electron blast KW - Electrons and phonons KW - Femtosecond lasers KW - Ultrafast deformation N1 - Accession Number: 17000096; Tzou, D. Y. 1; Email Address: Tzour@missouri.edu Chen, J. K. 2 Beraun, J. E. 2; Affiliation: 1: Department of Mechanical & Aerospace Engineering, University of Missouri-Columbia, Columbia, Missouri, USA 2: Laser Effects Research Branch, Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico, USA; Source Info: Jun/Jul2005, Vol. 28 Issue 6/7, p563; Subject Term: THERMOELASTICITY; Subject Term: NONLINEAR optics; Subject Term: LIGHT amplifiers; Subject Term: OPTOELECTRONIC devices; Subject Term: LIGHT sources; Subject Term: CATHODE rays; Author-Supplied Keyword: Electron blast; Author-Supplied Keyword: Electrons and phonons; Author-Supplied Keyword: Femtosecond lasers; Author-Supplied Keyword: Ultrafast deformation; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 32p; Document Type: Article L3 - 10.1080/01495730590929359 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17000096&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reagan, Ann B. T1 - Land Without Nightingales: Music in the Making of German-America. JO - Monatshefte JF - Monatshefte Y1 - 2005///Summer2005 VL - 97 IS - 2 M3 - Book Review SP - 367 EP - 377 PB - University of Wisconsin Press SN - 00269271 AB - Reviews the book "Land Without Nightingales: Music in the Making of German-America," edited by Philip V. Bohlman and Otto Holzapfel. KW - GERMAN American literature KW - NONFICTION KW - BOHLMAN, Philip V. KW - HOLZAPFEL, Otto KW - LAND Without Nightingales: Music in the Making of German-America (Book) N1 - Accession Number: 17267602; Reagan, Ann B. 1; Affiliation: 1: United States Air Force Academy; Source Info: Summer2005, Vol. 97 Issue 2, p367; Subject Term: GERMAN American literature; Subject Term: NONFICTION; Reviews & Products: LAND Without Nightingales: Music in the Making of German-America (Book); People: BOHLMAN, Philip V.; People: HOLZAPFEL, Otto; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17267602&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Radloff AU - C. AU - Vaia AU - R. A. AU - Brunton AU - J. AU - Bouwer AU - G. T. AU - Ward AU - V. K. T1 - Metal Nanoshell Assembly on a Virus Bioscaffold. JO - Nano Letters JF - Nano Letters Y1 - 2005/06// VL - 5 IS - 6 M3 - Article SP - 1187 EP - 1191 SN - 15306984 AB - Chilo iridescent virus is demonstrated as a useful core substrate in the fabrication of metallodielectric, plasmonic nanostructures. A gold shell is assembled around the wild-type viral core by attaching small, 2−5-nm gold nanoparticles to the virus surface by means of the chemical functionality found inherently on the surface of the proteinaceous viral capsid. The density of these nucleation sites was maximized by reducing the repulsive forces between the gold particles through electrolyte addition. These gold nanoparticles then act as nucleation sites for the electroless deposition of gold ions from solution around the biotemplate. The optical extinction spectra of the metalloviral complex is in quantitative agreement with Mie scattering theory. Overall, the utilization of a native virus and the inherent chemical functionality of the capsid afford the ability to grow and harvest biotemplates for metallodielectric nanoshells in large quantities, potentially providing cores with a narrower size distribution and smaller diameters (below 80 nm) than for currently used silica. [ABSTRACT FROM AUTHOR] AB - Copyright of Nano Letters is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IRIDOVIRUSES KW - NANOSTRUCTURES KW - NUCLEATION KW - MIE scattering N1 - Accession Number: 20141954; Radloff C. 1 Vaia R. A. 1 Brunton J. 1 Bouwer G. T. 1 Ward V. K. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson, Ohio; Source Info: Jun2005, Vol. 5 Issue 6, p1187; Subject Term: IRIDOVIRUSES; Subject Term: NANOSTRUCTURES; Subject Term: NUCLEATION; Subject Term: MIE scattering; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20141954&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vaia, Richard T1 - Nanocomposites: Remote-controlled actuators. JO - Nature Materials JF - Nature Materials Y1 - 2005/06// VL - 4 IS - 6 M3 - Article SP - 429 EP - 430 SN - 14761122 AB - Focuses on the possibilities of carbon nanotube-elastomer nanocomposites of contracting or expanding reversibly on exposure to light in the creation and development of light-controlled actuators. Comparison of the features of single-wall carbon nanotubes (SWNT) with its multiwall counterparts (MWNT); Assessment of the development of SWNT and MWNT as actuators and shape-memory systems; Highlights of the research; Claim of the author that the focus on nanoparticle connectivity and larger length-scale effects points to a new potential of nanocomposites. KW - NANOTUBES KW - ELASTOMERS KW - NANOPARTICLES KW - NANOSTRUCTURED materials KW - NANOTECHNOLOGY KW - ACTUATORS KW - AUTOMATIC control N1 - Accession Number: 18445760; Vaia, Richard 1; Email Address: Richard.Vaia@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433-7750, USA; Source Info: Jun2005, Vol. 4 Issue 6, p429; Subject Term: NANOTUBES; Subject Term: ELASTOMERS; Subject Term: NANOPARTICLES; Subject Term: NANOSTRUCTURED materials; Subject Term: NANOTECHNOLOGY; Subject Term: ACTUATORS; Subject Term: AUTOMATIC control; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325212 Synthetic Rubber Manufacturing; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 2p; Illustrations: 1 Black and White Photograph, 1 Diagram; Document Type: Article L3 - 10.1038/nmat1400 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18445760&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hsieh, Sheng-Jen AU - Crane, Robert AU - Sathish, Shamachary T1 - Understanding and predicting electronic vibration stress using ultrasound excitation, thermal profiling, and neural network modeling. JO - Nondestructive Testing & Evaluation JF - Nondestructive Testing & Evaluation Y1 - 2005/06// VL - 20 IS - 2 M3 - Article SP - 89 EP - 102 PB - Taylor & Francis Ltd SN - 10589759 AB - Vibration stress is a major source for failure of electronics components. In this study, we used an ultrasonic/infrared system to generate vertical vibration of a microprocessor on a printed circuit board, in order to study the impact of short burst high load vibration stress on component integrity. The objectives of this research were to (1) understand the impact of vibration on electronic components under ultrasound excitation; (2) model the thermal profile presented under vibration stress; and (3) predict stress level given a thermal profile of an electronic component. Research tasks included: (1) retrofit of current ultrasonic/infrared nondestructive testing system with sensory devices for temperature readings; (2) design of software tool to process images acquired from the ultrasonic/infrared system; (3) developing hypotheses and conducting experiments; and (4) modeling and evaluation of electronic vibration stress levels using a neural network model. Results suggest that (1) an ultrasonic/infrared system can be used to mimic short burst high vibration loads for electronics components; (2) temperature readings for electronic components under vibration stress are consistent and repeatable; (3) as stress load and excitation time increase, temperature differences also increase; (4) components that are subjected to a relatively high pre-stress load, followed by a normal operating load, have a higher heating rate and lower cooling rate. These findings are based on grayscale changes in images captured during experimentation. Discriminating variables and a neural network model were designed to predict stress levels given temperature and/or grayscale readings. Results suggest a 15.3% error when using grayscale change rate and 12.8% error when using average heating rate within the neural network model. Data were obtained from a high stress point (the corner) of the chip. [ABSTRACT FROM AUTHOR] AB - Copyright of Nondestructive Testing & Evaluation is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC systems KW - ELECTRONICS KW - STRAINS & stresses (Mechanics) KW - VIBRATION (Mechanics) KW - TEMPERATURE KW - Electronics KW - Infrared KW - Neural networks KW - Thermal profiles KW - Ultrasonic KW - Vibration stress N1 - Accession Number: 18289510; Hsieh, Sheng-Jen 1; Email Address: hsieh@tamu.edu Crane, Robert 2 Sathish, Shamachary 3; Affiliation: 1: Texas A&M University, 3367 TAMU, College Station, TX, 77843, USA 2: Air Force Research Laboratory, AFRL/MLLP, Wright-Patterson AFB, OH, 45433, USA 3: The University of Dayton Research Institute, 300 College Park, Dayton, OH, 45469, USA; Source Info: Jun2005, Vol. 20 Issue 2, p89; Subject Term: ELECTRONIC systems; Subject Term: ELECTRONICS; Subject Term: STRAINS & stresses (Mechanics); Subject Term: VIBRATION (Mechanics); Subject Term: TEMPERATURE; Author-Supplied Keyword: Electronics; Author-Supplied Keyword: Infrared; Author-Supplied Keyword: Neural networks; Author-Supplied Keyword: Thermal profiles; Author-Supplied Keyword: Ultrasonic; Author-Supplied Keyword: Vibration stress; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 14p; Document Type: Article L3 - 10.1080/10589750500149149 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18289510&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coletta, Damon T1 - The Sheriff: America's Defense of the New World Order. JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College Y1 - 2005///Summer2005 VL - 35 IS - 2 M3 - Book Review SP - 149 EP - 152 SN - 00311723 AB - Reviews the book "The Sheriff: America's Defense of the New World Order," by Colin S. Gray. KW - GEOPOLITICS KW - NONFICTION KW - GRAY, Colin S. KW - SHERIFF: America's Defense of the New World Order, The (Book) N1 - Accession Number: 17207868; Coletta, Damon 1; Affiliation: 1: Associate Professor of Political Science, US Air Force Academy.; Source Info: Summer2005, Vol. 35 Issue 2, p149; Subject Term: GEOPOLITICS; Subject Term: NONFICTION; Reviews & Products: SHERIFF: America's Defense of the New World Order, The (Book); People: GRAY, Colin S.; Number of Pages: 4p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17207868&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kopesky, Edward T. AU - Haddad, Timothy S. AU - McKinley, Gareth H. AU - Cohen, Robert E. T1 - Miscibility and viscoelastic properties of acrylic polyhedral oligomeric silsesquioxane–poly(methyl methacrylate) blends JO - Polymer JF - Polymer Y1 - 2005/06// VL - 46 IS - 13 M3 - Article SP - 4743 EP - 4752 SN - 00323861 AB - Abstract: We investigate the miscibility of acrylic polyhedral oligomeric silsesquioxanes (POSS) [characteristic size d≈2nm] and poly(methyl methacrylate)(PMMA) in order to determine the effect of well-dispersed POSS nanoparticles on the thermomechanical properties of PMMA. Two different acrylic POSS species (unmodified and hydrogenated) were blended separately with PMMA at volume fractions up to ϕ=0.30. Both POSS species have a plasticizing effect on PMMA by lowering the glass transition temperature T g and decreasing the melt-state linear viscoelastic moduli measured in small amplitude oscillatory shear flow. The unmodified acrylic-POSS has better miscibility with PMMA than the hydrogenated form, approaching complete miscibility for loadings ϕ<0.10. At a loading ϕ=0.05, the unmodified acrylic POSS induces a 4.9°C decrease in the T g of PMMA, far less than the 17.4°C decrease in the glass transition temperature observed in a blend of 5vol% dioctyl phthalate (DOP) in PMMA; however, the decrease in the glass transition temperature per added plasticizer molecule is nearly the same in the unmodified acrylic-POSS–PMMA blend compared with the DOP–PMMA blend. Time-temperature superposition (TTS) was applied successfully to the storage and loss moduli data and the resulting shift factors were correlated with a significant increase in free volume of the blends. The fractional free volume f 0=0.046 for PMMA at T 0=170°C while for a blend of 5vol% unmodified acrylic-POSS in PMMA f 0=0.057, which corresponds to an addition of 0.47nm3 per added POSS molecule at ϕ=0.05. The degree of dispersion was characterized using both wide-angle X-ray diffraction (WAXD) and dynamic mechanical analysis (DMA). Diffraction patterns for both blend systems show clear evidence of phase separation at ϕ=0.20 and higher, but no significant phase separation is evident at ϕ=0.10 and lower. The storage modulus measured in DMA indicates appreciable phase separation for unmodified acrylic POSS loadings ϕ≥0.10, while no evidence of phase separation is present in the ϕ=0.05 blend in DMA. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMETHYLMETHACRYLATE KW - ACRYLIC resins KW - GLASS transition temperature KW - PLASTICIZERS KW - X-ray diffraction KW - Nanocomposites KW - Plasticization KW - POSS N1 - Accession Number: 18513015; Kopesky, Edward T. 1; Email Address: ed_k@mit.edu Haddad, Timothy S. 2; Email Address: timothy.haddad@edwards.af.mil McKinley, Gareth H. 3; Email Address: gareth@mit.edu Cohen, Robert E. 1; Email Address: recohen@mit.edu; Affiliation: 1: Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA 2: ERC Inc., Air Force Research Laboratory, Edwards AFB, CA 93524, USA 3: Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Source Info: Jun2005, Vol. 46 Issue 13, p4743; Subject Term: POLYMETHYLMETHACRYLATE; Subject Term: ACRYLIC resins; Subject Term: GLASS transition temperature; Subject Term: PLASTICIZERS; Subject Term: X-ray diffraction; Author-Supplied Keyword: Nanocomposites; Author-Supplied Keyword: Plasticization; Author-Supplied Keyword: POSS; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 424610 Plastics Materials and Basic Forms and Shapes Merchant Wholesalers; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325999 All other miscellaneous chemical product manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.polymer.2005.04.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18513015&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chun, Y.B. AU - Yu, S.H. AU - Semiatin, S.L. AU - Hwang, S.K. T1 - Effect of deformation twinning on microstructure and texture evolution during cold rolling of CP-titanium JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2005/05/25/ VL - 398 IS - 1/2 M3 - Article SP - 209 EP - 219 SN - 09215093 AB - Abstract: The evolution of microstructure and texture during cold rolling of commercial-purity titanium (CP-Ti) was studied with particular reference to deformation twinning and dislocation slip. For low to intermediate deformation up to 40% in thickness reduction, the external strain was accommodated by slip and deformation twinning. In this stage, both compressive () and tensile () twins, as well as, secondary twins and tertiary twins were activated in the grains of favorable orientation, and this resulted in a heterogeneous microstructure in which grains were refined in local areas. For heavy deformation, between 60 and 90%, slip overrode twinning and shear bands developed. The crystal texture of deformed specimens was weakened by twinning but was strengthened by slip, resulting in a split-basal texture in heavily deformed specimens. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROMECHANICS KW - STEREOLOGY KW - MICROSTRUCTURE KW - MORPHOLOGY KW - Cold rolling KW - Deformation twinning KW - Microstructure KW - Texture KW - Titanium N1 - Accession Number: 18480608; Chun, Y.B. 1 Yu, S.H. 1 Semiatin, S.L. 2 Hwang, S.K. 1; Email Address: skhwang2@inha.ac.kr; Affiliation: 1: School of Materials Science and Engineering, Inha University, 253 Yonghyun-Dong, Nam-Gu, Incheon 402-751, South Korea 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: May2005, Vol. 398 Issue 1/2, p209; Subject Term: MICROMECHANICS; Subject Term: STEREOLOGY; Subject Term: MICROSTRUCTURE; Subject Term: MORPHOLOGY; Author-Supplied Keyword: Cold rolling; Author-Supplied Keyword: Deformation twinning; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Texture; Author-Supplied Keyword: Titanium; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.msea.2005.03.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18480608&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Scrymgeour, David A. AU - Tian, L. AU - Gopalan, Venkatraman AU - Chauvin, Daren AU - Schepler, Kenneth L. T1 - Phased-array electro-optic steering of large aperture laser beams using ferroelectrics. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/05/23/ VL - 86 IS - 21 M3 - Article SP - 211113 PB - American Institute of Physics SN - 00036951 AB - We present a device concept for scanning large (>1 cm) laser beams using a domain microengineered ferroelectric device. In our design, the large input beam is divided into smaller beamlets, which are then individually deflected through an angle, and then recombined in the far-field to reconstruct the large beam. As a demonstration of this concept, a five-stage cascaded rectangular domain micropatterned scanner device with 13 beamlet channels was fabricated in LiTaO3 and was demonstrated to deflect a 1.064 μm infrared laser beam by a total of 10.3° at 5.39 kV/mm. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FERROELECTRIC crystals KW - LASER beams KW - ELECTRONIC apparatus & appliances KW - LIGHT amplifiers KW - SOLID state electronics KW - LIGHT sources N1 - Accession Number: 17226902; Scrymgeour, David A. 1 Tian, L. 1 Gopalan, Venkatraman 1; Email Address: vgopalan@psu.edu Chauvin, Daren 2 Schepler, Kenneth L. 3; Affiliation: 1: Department of Materials Science and Engineering and Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802. 2: Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433. 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433.; Source Info: 5/23/2005, Vol. 86 Issue 21, p211113; Subject Term: FERROELECTRIC crystals; Subject Term: LASER beams; Subject Term: ELECTRONIC apparatus & appliances; Subject Term: LIGHT amplifiers; Subject Term: SOLID state electronics; Subject Term: LIGHT sources; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 3p; Illustrations: 2 Diagrams, 1 Chart, 1 Graph; Document Type: Article L3 - 10.1063/1.1935033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17226902&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boieriu, P. AU - Grein, C. H. AU - Jung, H. S. AU - Garland, J. AU - Nathan, V. T1 - Arsenic activation in molecular beam epitaxy grown, in situ doped HgCdTe(211). JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/05/23/ VL - 86 IS - 21 M3 - Article SP - 212106 PB - American Institute of Physics SN - 00036951 AB - Photovoltaic p-n junctions are the most significant active components of both current infrared photodetectors and advanced ones being developed. It is of the utmost importance to control both p- and n-type extrinsic doping. This letter addresses the issue of activating arsenic as a p-type dopant of Hg1-xCdxTe at temperatures sufficiently low that the integrity of p-n junctions and the intrinsic advantages of molecular beam epitaxy as a growth technique will not be compromised. The p-type activation of arsenic in (211)B Hg1-xCdxTe is reported after a two-stage anneal at temperatures below 300 °C for Cd compositions suitable for the sensing of long wavelength infrared radiation. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOVOLTAIC effect KW - MOLECULAR beams KW - PHOTOELECTRICITY KW - EPITAXY KW - CRYSTAL growth KW - ELECTROMAGNETIC waves N1 - Accession Number: 17226886; Boieriu, P. 1; Email Address: pboieriu@epir.com Grein, C. H. 1 Jung, H. S. 1 Garland, J. 1 Nathan, V. 2; Affiliation: 1: EPIR Technologies Inc., Bolingbrook, Illinois 60440. 2: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117.; Source Info: 5/23/2005, Vol. 86 Issue 21, p212106; Subject Term: PHOTOVOLTAIC effect; Subject Term: MOLECULAR beams; Subject Term: PHOTOELECTRICITY; Subject Term: EPITAXY; Subject Term: CRYSTAL growth; Subject Term: ELECTROMAGNETIC waves; Number of Pages: 3p; Illustrations: 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.1940119 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17226886&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ketsdever, A. D. AU - Lilly, T. C. AU - Gimelshein, S. F. AU - Alexeenko, A. A. T1 - Experimental and Numerical Study of Nozzle Plume Impingement on Spacecraft Surfaces. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2005/05/16/ VL - 762 IS - 1 M3 - Article SP - 367 EP - 372 PB - American Institute of Physics SN - 0094243X AB - An experimental and numerical effort was undertaken to assess the effects of a cold gas (To=300K) nozzle plume impinging on a simulated spacecraft surface. The nozzle flow impingement is investigated experimentally using a nano-Newton resolution force balance and numerically using the Direct Simulation Monte Carlo (DSMC) numerical technique. The Reynolds number range investigated in this study is from 0.5 to approximately 900 using helium and nitrogen propellants. The thrust produced by the nozzle was first assessed on a force balance to provide a baseline case. Subsequently, an aluminum plate was attached to the same force balance at various angles from 0° (parallel to the plume flow) to 10°. For low Reynolds number helium flow, a 16.5% decrease in thrust was measured for the plate at 0° relative to the free plume expansion case. For low Reynolds number nitrogen flow, the difference was found to be 12%. The thrust degradation was found to decrease at higher Reynolds numbers and larger plate angles. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLUMES (Fluid dynamics) KW - COLD gases KW - NOZZLES KW - SPACE vehicles KW - MONTE Carlo method KW - SIMULATION methods & models N1 - Accession Number: 17306956; Ketsdever, A. D. 1 Lilly, T. C. 2 Gimelshein, S. F. 2 Alexeenko, A. A. 2; Affiliation: 1: US Air Force Research Laboratory, Propulsion Directorate, Edwards AFB, CA 93524 2: University of Southern California, Dept. of Aerospace and Mechanical Eng. Los Angeles, CA 90089; Source Info: 2005, Vol. 762 Issue 1, p367; Subject Term: PLUMES (Fluid dynamics); Subject Term: COLD gases; Subject Term: NOZZLES; Subject Term: SPACE vehicles; Subject Term: MONTE Carlo method; Subject Term: SIMULATION methods & models; NAICS/Industry Codes: 326198 All other plastic product manufacturing; NAICS/Industry Codes: 326199 All Other Plastics Product Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.1941564 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17306956&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gimelshein, S. F. AU - Markelov, G. N. AU - Lilly, T. C. AU - Selden, N. P. AU - Ketsdever, A. D. T1 - Experimental and numerical modeling of rarefied gas flows through orifices and short tubes. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2005/05/16/ VL - 762 IS - 1 M3 - Article SP - 437 EP - 443 PB - American Institute of Physics SN - 0094243X AB - Flow through circular orifices with thickness-to-diameter ratios varying from 0.015 to 1.2 is studied experimentally and numerically with kinetic and continuum approaches. Helium and nitrogen gases are used in the range of Reynolds numbers from 0.02 to over 700. Good agreement between experimental and numerical results is observed for mass flow and thrust corrected for the experimental facility background pressure. For thick-to-thin orifice ratios of mass flow and thrust vs pressure, a minimum is established. The thick orifice propulsion efficiency is much higher than that of a thin orifice. The effects of edge roundness and surface specularity on a thick orifice specific impulse were found to be relatively small. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAREFIED gas dynamics KW - SPACE fluid dynamics KW - GAS flow KW - HOLES KW - NOBLE gases KW - HELIUM KW - PHYSICS N1 - Accession Number: 17306944; Gimelshein, S. F. 1 Markelov, G. N. 2 Lilly, T. C. 1 Selden, N. P. 1 Ketsdever, A. D. 3; Affiliation: 1: University of Southern California, Los Angeles, CA 90089 2: Advanced Operations and Engineering Services, The Netherlands 3: Air Force Research Laboratory, Edwards AFB, CA 93524; Source Info: 2005, Vol. 762 Issue 1, p437; Subject Term: RAREFIED gas dynamics; Subject Term: SPACE fluid dynamics; Subject Term: GAS flow; Subject Term: HOLES; Subject Term: NOBLE gases; Subject Term: HELIUM; Subject Term: PHYSICS; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1063/1.1941576 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17306944&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - D’Souza, B. C. AU - Ketsdever, A. D. AU - Muntz, E. P. T1 - Investigation of Transient Forces Produced by Gases Expelled from Rapidly Heated Surfaces. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2005/05/16/ VL - 762 IS - 1 M3 - Article SP - 959 EP - 964 PB - American Institute of Physics SN - 0094243X AB - A torsional impulse balance has been developed as a new diagnostic tool to study fundamental processes in laser-surface interactions. The impulse balance has been designed and tested with a robust calibration system to measure impulsive forces with resolution as low as 1 nano-Newton-second. A simple technique has been developed to accurately determine the force as a function of time from the motion of the nano-impulse balance system (NIBS). This technique will be useful in examining the transient responses of photon-surface interactions. Initial ablation measurements using anodized aluminum plates at vacuum and with various background gases are presented. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSIENTS (Dynamics) KW - GASES KW - SURFACE chemistry KW - SURFACES (Physics) KW - PHYSICAL & theoretical chemistry KW - TORSION balances N1 - Accession Number: 17306863; D’Souza, B. C. 1 Ketsdever, A. D. 2 Muntz, E. P. 1; Affiliation: 1: University of Southern California, Dept. of Aerospace and Mechanical Engineering, Los Angeles, CA 2: Air Force Research Laboratory, Propulsion Directorate, Edwards AFB, CA; Source Info: 2005, Vol. 762 Issue 1, p959; Subject Term: TRANSIENTS (Dynamics); Subject Term: GASES; Subject Term: SURFACE chemistry; Subject Term: SURFACES (Physics); Subject Term: PHYSICAL & theoretical chemistry; Subject Term: TORSION balances; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.1941658 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17306863&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Josyula, Eswar AU - Xu, Kun AU - Wadsworth, Dean C. T1 - Testing Continuum and Non-Continuum Descriptions in High Speed Flows. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2005/05/16/ VL - 762 IS - 1 M3 - Article SP - 1217 EP - 1222 PB - American Institute of Physics SN - 0094243X AB - Detailed simulations were performed with a continuum-based Navier-Stokes, a gas kinetic Bhatnagar-Gross-Krook (BGK) and the Direct Simulation Monte Carlo (DSMC) flow solvers to identify and characterize the translational and internal energy mode relaxation in high speed flows. Argon and nitrogen shock structures were simulated to quantify the nonequilibrium state. A new multi-translational temperature gas kinetic model was developed to match the capability of DSMC. Bulk viscosity as an adjustable parameter to recover small departures from rotational equilibrium in the Navier-Stokes equations is explored in weak shock structures. In the context of nitrogen dissociation, the models of vibrational bias for the dissociation kinetics are presented. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS dynamics KW - RELAXATION phenomena KW - NITROGEN KW - ARGON KW - NAVIER-Stokes equations KW - MONTE Carlo method KW - COMPUTER simulation N1 - Accession Number: 17306822; Josyula, Eswar 1 Xu, Kun 2 Wadsworth, Dean C. 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Hong Kong University of Science and Technology, Kowloon, Hong Kong 3: ERC Inc., Edwards Air Force Base, California 93524; Source Info: 2005, Vol. 762 Issue 1, p1217; Subject Term: GAS dynamics; Subject Term: RELAXATION phenomena; Subject Term: NITROGEN; Subject Term: ARGON; Subject Term: NAVIER-Stokes equations; Subject Term: MONTE Carlo method; Subject Term: COMPUTER simulation; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.1941699 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17306822&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Taylor, Edward W. AU - Nichter, James E. AU - Nash, Fazio D. AU - Haas, Franz AU - Szep, Attila A. AU - Michalak, Richard J. AU - Flusche, Brian M. AU - Cook, Paul R. AU - McEwen, Tom A. AU - McKeon, Brian F. AU - Payson, Paul M. AU - Brost, George A. AU - Pirich, Andrew R. AU - Castaneda, Carlos AU - Tsap, Boris AU - Fetterman, Harold R. T1 - Radiation resistance of electro-optic polymer-based modulators. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/05/16/ VL - 86 IS - 20 M3 - Article SP - 201122 PB - American Institute of Physics SN - 00036951 AB - Mach–Zehnder interferometric electro-optic polymer modulators composed of highly nonlinear phenyltetraene bridge-type chromophores within an amorphous polycarbonate host matrix were investigated for their resistance to gamma rays and 25.6 MeV protons. No device failures were observed and the majority of irradiated modulators exhibited decreases in half-wave voltage and optical insertion losses compared to nonirradiated control samples undergoing aging processes. Irradiated device responses were attributed to scission, cross-linking, and free volume processes. The data suggests that strongly poled devices are less likely to de-pole under the influence of ionizing radiation. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERFEROMETRY KW - ELECTROOPTICAL devices KW - RADIATION KW - ELECTROOPTICS KW - PHOTONICS KW - OPTICAL measurements N1 - Accession Number: 17164866; Taylor, Edward W. 1; Email Address: Intphoton@aol.com Nichter, James E. 2 Nash, Fazio D. 2 Haas, Franz 2 Szep, Attila A. 2 Michalak, Richard J. 2 Flusche, Brian M. 2 Cook, Paul R. 2 McEwen, Tom A. 2 McKeon, Brian F. 2 Payson, Paul M. 2 Brost, George A. 2 Pirich, Andrew R. 2 Castaneda, Carlos 3 Tsap, Boris 4 Fetterman, Harold R. 4; Affiliation: 1: International Photonics Consultants, 30 Tierra Monte NE, Albuquerque, New Mexico 87122. 2: Air Force Research Laboratory, 25 Electronic Pkwy., Rome, New York 13441. 3: University of California, One Shields Ave., Crocker Nuclear Laboratory, Davis, California 95616. 4: Pacific Wave Industries, 129 Sheldon St., El Segundo, California 90245.; Source Info: 5/16/2005, Vol. 86 Issue 20, p201122; Subject Term: INTERFEROMETRY; Subject Term: ELECTROOPTICAL devices; Subject Term: RADIATION; Subject Term: ELECTROOPTICS; Subject Term: PHOTONICS; Subject Term: OPTICAL measurements; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.1927713 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17164866&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Del Sesto, Rico E. AU - Corley, Cynthia AU - Robertson, Al AU - Wilkes, John S. T1 - Tetraalkylphosphonium-based ionic liquids JO - Journal of Organometallic Chemistry JF - Journal of Organometallic Chemistry Y1 - 2005/05/16/ VL - 690 IS - 10 M3 - Article SP - 2536 EP - 2542 SN - 0022328X AB - Abstract: Ionic liquids are salts that are liquid at or near room temperature. Their wide liquid range, good thermal stability, and very low vapor pressure make them attractive for numerous applications. The general approach to creating ionic liquids is to employ a large, unreactive, low symmetry cation with and an anion that largely controls the physical and chemical properties. The most common cations used in ionic liquids are N-alkylpyridinium and N,N′-dialkylimidazolium. Another very effective cation for the creation of ionic liquids is tetraalkylphosphonium, [PR1R2R3R4]+. The alkyl groups, R n , generally are large and not all the same. The halide salts of several phosphonium cations are available as starting materials for metathesis reactions used to prepare ionic liquids. The large phosphonium cations can combine with relatively large anions to make viscous but free flowing liquids with formula mass greater than 1000 gmol−1. Some other more massive salts are waxes and glasses. The synthesis and the physical, chemical, and optical properties of phosphonium-ionic liquids having anions with a wide range of masses were measured and are reported here. [Copyright &y& Elsevier] AB - Copyright of Journal of Organometallic Chemistry is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROSTATICS KW - POLYWATER KW - CATIONS KW - ANIONS KW - Ionic liquids KW - Molten salt KW - Phosphonium salts KW - Physical properties KW - Room temperature ionic liquids KW - Viscosity N1 - Accession Number: 17805552; Del Sesto, Rico E. 1 Corley, Cynthia 1 Robertson, Al 2 Wilkes, John S. 1; Email Address: john.wilkes@usafa.af.mil; Affiliation: 1: Department of Chemistry, US Air Force Academy, 2355 Fairchild Dr., Suite 2N225, Colorado, USAF Academy 80840-6230, USA 2: Cytec Canada Inc., 9061 Garner Road, Niagara Falls, Ont., Canada L2E6T4; Source Info: May2005, Vol. 690 Issue 10, p2536; Subject Term: HYDROSTATICS; Subject Term: POLYWATER; Subject Term: CATIONS; Subject Term: ANIONS; Author-Supplied Keyword: Ionic liquids; Author-Supplied Keyword: Molten salt; Author-Supplied Keyword: Phosphonium salts; Author-Supplied Keyword: Physical properties; Author-Supplied Keyword: Room temperature ionic liquids; Author-Supplied Keyword: Viscosity; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jorganchem.2004.09.060 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17805552&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Williamson, James M. AU - Bletzinger, Peter AU - Ganguly, Biswa N. T1 - Absolute and relative density measurements in a N2/Ar dielectric barrier discharge by diode-laser absorption spectroscopy and resolved plasma emission. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2005/05/15/ VL - 97 IS - 10 M3 - Article SP - 103301-1 EP - 103301-6 PB - American Institute of Physics SN - 00218979 AB - The population density of metastable Ar 4s'[1/2]° in a 70% Ar/30% N2, short-pulsed (<15-ns full width at half maximum) dielectric barrier discharge was determined from the time-resolved diode-laser absorption as a function of pulse repetition rate for a gas pressure of 100 Torr. The relative population density change of N2+ B2Σu+ and N2 C3Πu was also determined from N2+ first negative and N2 second positive plasma emission for the same pulse repetition rates and pressure. The net power deposited per pulse was obtained from measurements of the voltage and current wave forms. The fractional energy dissipated in metastable Ar production was estimated from the power and absorption number density measurements to be roughly 20% for pulse repetition rates ⩽10 kHz, decreasing to ~10% at 30 kHz for 3.5-kV applied voltage and 100 Torr. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 100455630; Williamson, James M. 1; Email Address: james.williamson@pr.wpafb.af.mil Bletzinger, Peter 1 Ganguly, Biswa N. 2; Affiliation: 1: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, Ohio 45440-3638 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7919; Source Info: 5/15/2005, Vol. 97 Issue 10, p103301-1; Number of Pages: 6p; Illustrations: 2 Diagrams, 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.1894585 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100455630&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brown, Michael S. AU - Forlines, Robert A. AU - Ganguly, Biswa N. T1 - Measurement of CH density in a pulsed-dc hydrocarbon-gasmixture discharge. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2005/05/15/ VL - 97 IS - 10 M3 - Article SP - 103302-1 EP - 103302-6 PB - American Institute of Physics SN - 00218979 AB - Optical and electrical measurements are performed in methane/diluent mixtures in a 250-ns pulsed-dc discharge using a fast-rise-time pulser. In particular, emission and laser-induced-fluorescence studies of CH produced by direct-electron-impact dissociation reveal the postdissociation kinetics of CH as well as a means of estimating the CH density. In a 20-Torr 10%/20%/70% mixture of argon/methane/nitrogen, the instantaneous CH density is determined to be 2.1×1013 cm-3 at the end of the steady-state voltage and current condition. Kinetics analysis reveals that neutral chemistry with methane is the largest loss process for the CH fragments. Analysis of N2(C-B) rotational temperatures indicates that less than 30% of the input electrical energy is deposited as heat in the gas, with the balance going toward dissociation, excitation of internal molecular states, and ionization. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 100455631; Brown, Michael S. 1; Email Address: michael.brown@wpafb.af.mil Forlines, Robert A. 1 Ganguly, Biswa N. 2; Affiliation: 1: Innovative Scientific Solutions, Inc., Dayton, Ohio 45440-3638 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7103; Source Info: 5/15/2005, Vol. 97 Issue 10, p103302-1; Number of Pages: 6p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.1891276 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100455631&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O. N. AU - Miracle, D. B. AU - Mullens, H. M. T1 - Topological criteria for amorphization based on a thermodynamic approach. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2005/05/15/ VL - 97 IS - 10 M3 - Article SP - 103502-1 EP - 103502-7 PB - American Institute of Physics SN - 00218979 AB - The effects of composition, atomic radii, atomic size ratios, and elastic constants of the constitutive elements on the glass-forming ability of metallic glasses have been identified using a thermodynamic model. This model is based on the comparison of the Gibbs free energy and entropy between a nonequilibrium crystalline solid solution and the undercooled liquid. According to this model, the glass-forming ability (reduced glass transition temperature, Tg /Tm) of an alloy should increase with sad an increase in the atom size and/or shear modulus of the solvent; (b) an increase in the bulk modulus of a solute; and (c) a decrease in the melting temperature of the alloy. At constant values for other parameters, the glass-forming ability is maximum at a certain concentration and relative atomic size of a solute. Recently, these topological criteria have been successfully used to produce a number of Ca-based bulk metallic glasses. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 100455640; Senkov, O. N. 1; Email Address: oleg.senkov@wpafb.af.mil Miracle, D. B. 2 Mullens, H. M. 3; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Road, Dayton, Ohio 45432 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433 3: Southern Ohio Council for Higher Education, 3155 Research Boulevard, Dayton, Ohio 45420; Source Info: 5/15/2005, Vol. 97 Issue 10, p103502-1; Number of Pages: 7p; Illustrations: 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1063/1.1896434 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100455640&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zeng, D. AU - Latham, W. P. AU - Kar, A. T1 - Two-dimensional model for melting and vaporization during optical trepanning. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2005/05/15/ VL - 97 IS - 10 M3 - Article SP - 104912-1 EP - 104912-7 PB - American Institute of Physics SN - 00218979 AB - Annular laser beams provide a drilling mechanism that can be referred to as optical trepanning. In this paper an analytical two-dimensional model is developed for optical trepanning. The analysis accounts for conduction in the solid, vaporization, and convection due to the melt flow caused by an assist gas. Based on the model, the influences of pulse duration, laser-pulse length, pulse repetition rate, intensity profiles, and beam radius are investigated to examine their effects on the recast layer thickness, hole depth, and taper. Deeper cavity depth, thicker recast layer, and larger taper are obtained with the increase in the laser intensity. By using different types of intensity profiles, the nature of the hole taper can be modified, i.e., convergent or divergent holes can be produced. The effects of the inner radius of annular beams are more significant than other laser parameters. An increase in the inner radius reduces the hole taper and produces thinner recast layer and deeper cavity depth. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 100455789; Zeng, D. 1 Latham, W. P. 2 Kar, A. 1; Email Address: akar@creol.ucf.edu; Affiliation: 1: Laser-Aided Manufacturing, Materials and Microprocessing Laboratory (LAMMP), College of Optics and Photonics, Center for Research and Education Optics and Lasers (CREOL), Mechanical, Materials and Aerospace Engineering Department, University of Central Florida, Orlando, Florida 32816 2: Air Force Research Laboratory (AFRL) Division on Earth and Life Studies (DELS), 3550 Aberdeen Avenue Southeast, Kirtland Air Force Base, Albuquerque, New Mexico 87117; Source Info: 5/15/2005, Vol. 97 Issue 10, p104912-1; Number of Pages: 7p; Illustrations: 1 Diagram, 1 Chart, 6 Graphs; Document Type: Article L3 - 10.1063/1.1897835 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100455789&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, M. Q. AU - Turgut, Z. AU - Wheeler, B. AU - Lee, D. AU - Liu, S. AU - Ma, B. M. AU - Peng, Y. G. AU - Chu, S. Y. AU - Laughlin, D. E. AU - Horwath, J. C. AU - Fingers, R. T. T1 - Fully dense anisotropic nanocomposite Sm(Co,Fe,Zr,Cu,B)z (z =7.5-12) magnets. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2005/05/15/ VL - 97 IS - 10 M3 - Article SP - 10H104-1 EP - 10H104-3 PB - American Institute of Physics SN - 00218979 AB - Fully dense anisotropic nanocomposite Sm(Co0.58Fe0.31Zr0.05Cu0.04B0.02)z (z=7.5-12) magnets have been synthesized via rapid hot pressing and hot deformation processes. The highest (BH)max ∼10.6 MGOe was observed for a magnet with z=10. X-ray diffraction and M-H measurements indicated that the easy magnetization direction of magnets prefers to be in the hot pressing direction. Transmission electron microscopy investigation confirmed that plastic deformation is an important route for forming magnetic anisotropy in the Sm-Co-type nanocomposite magnets. Some stripe and/or platelike patterns have been observed inside the nanograins (50-200 nm), which may present as twins, and stacking faults. The (0001) twins have been observed in the 2:17R phase. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 100455262; Huang, M. Q. 1; Email Address: meiqing.huang@wpafb.af.mil Turgut, Z. 1 Wheeler, B. 1 Lee, D. 2 Liu, S. 2 Ma, B. M. 3 Peng, Y. G. 4 Chu, S. Y. 4 Laughlin, D. E. 4 Horwath, J. C. 5 Fingers, R. T. 5; Affiliation: 1: UES Inc., 4401 Dayton-Xenia Road, Dayton, Ohio 45432 2: University of Dayton Magnetic Laboratory, 300 College Park, Dayton, Ohio 45469 3: Magnequench Inc., 61 Science Park Road, 01-17 Galen, Singapore 117525 4: Department of Materials Science and Engineering (MSE), Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 5: Air Force Research Laboratory (AFRL), Wright-Patterson Air Force Base, Ohio 45433; Source Info: 5/15/2005, Vol. 97 Issue 10, p10H104-1; Number of Pages: 3p; Illustrations: 3 Black and White Photographs, 5 Graphs; Document Type: Article L3 - 10.1063/1.1851432 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=100455262&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Matson, L.E. AU - Hecht, N. T1 - Creep of directionally solidified alumina/YAG eutectic monofilaments JO - Journal of the European Ceramic Society JF - Journal of the European Ceramic Society Y1 - 2005/05/15/ VL - 25 IS - 8 M3 - Article SP - 1225 EP - 1239 SN - 09552219 AB - Abstract: Multi-phase—single crystal oxide fibers offer the best choice for reinforcing oxide matrix composites because they have superior creep resistance up to 1700°C without significant strength loss at moderate temperatures due to growth of processing flaws. In this work, Directionally Solidified Al2O3–YAG eutectic fibers were grown at various rates by the Edge-defined, Film-fed Growth (EFG) method and their microstructure, microstructural stability and creep properties were studied. A methodology was developed in order to determine if the creep behavior of a fiber was affected by any heterogeneous coarsening defects. The creep behavior could be rationalized using a threshold stress concept with activation energy of 1100kJ/molK. TEM analysis of the crept fibers suggested that the Sapphire phase was deforming by a dislocation mechanism, while the YAG phase deformed by a diffusional mechanism. A creep model was developed which contained geometrical factors for describing the microstructure. Analysis of the data showed that the creep resistance would increase to single crystal values as the phase aspect ratio increased. Further, these two phases—single crystal structures exhibit a flaw-independent strength and are suggested to have a decrease in slow crack growth rate as the transverse phase size decreases. [Copyright &y& Elsevier] AB - Copyright of Journal of the European Ceramic Society is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM oxide KW - OXIDES KW - EUTECTICS KW - MELTING points KW - FIBERS KW - MICROSTRUCTURE KW - Creep KW - Directionally solidified Al2O3–YAG eutectics KW - Fibers KW - Microstructure-final KW - Strength N1 - Accession Number: 17002231; Matson, L.E. 1 Hecht, N. 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, USAF/AFRL/MLLN, WPAFB, OH 45433, USA 2: University of Dayton, Dayton, OH 45469, USA; Source Info: May2005, Vol. 25 Issue 8, p1225; Subject Term: ALUMINUM oxide; Subject Term: OXIDES; Subject Term: EUTECTICS; Subject Term: MELTING points; Subject Term: FIBERS; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: Creep; Author-Supplied Keyword: Directionally solidified Al2O3–YAG eutectics; Author-Supplied Keyword: Fibers; Author-Supplied Keyword: Microstructure-final; Author-Supplied Keyword: Strength; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.jeurceramsoc.2005.01.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17002231&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Koerner, Hilmar AU - Liu, Weidong AU - Alexander, Max AU - Mirau, Peter AU - Dowty, Heather AU - Vaia, Richard A. T1 - Deformation–morphology correlations in electrically conductive carbon nanotube—thermoplastic polyurethane nanocomposites JO - Polymer JF - Polymer Y1 - 2005/05/15/ VL - 46 IS - 12 M3 - Article SP - 4405 EP - 4420 SN - 00323861 AB - Abstract: Addition of small amounts (0.5–10vol%) of multiwall carbon nanotubes (CNT) to thermoplastic elastomer Morthane produced polymer nanocomposites with high electrical conductivity (σ∼1–10S/cm), low electrical percolation (ϕ∼0.005) and enhancement of mechanical properties including increased modulus and yield stress without loss of the ability to stretch the elastomer above 1000% before rupture. In situ X-ray scattering during deformation indicated that these mechanical enhancements arise not only from the CNTs, but also from their impact on soft-segment crystallization. The deformation behavior after yielding of the nanocomposites, irrespective of CNT concentration, is similar to the unfilled elastomer, implying that the mechanistics of large deformation is mainly governed by the matrix. The relative enhancement of the Young''s modulus of the nanocomposites is comparable to other elastomeric nanocomposites, implying that to the first order specific chemical details of the elastomeric system is unimportant. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOTUBES KW - THERMOPLASTICS KW - ELASTOMERS KW - POLYMERS KW - CRYSTALLIZATION KW - Elastomer KW - Multiwall carbon nanotube KW - Nanocomposites N1 - Accession Number: 17855192; Koerner, Hilmar 1 Liu, Weidong 1 Alexander, Max 2 Mirau, Peter 2 Dowty, Heather 2 Vaia, Richard A. 2; Email Address: richard.vaia@afrl.af.mil; Affiliation: 1: University of Dayton Research Institute, Dayton OH 45469, USA 2: Air Force Research Laboratory (AFRL/MLBP), Wright-Patterson Air Force Base, OH 45433, USA; Source Info: May2005, Vol. 46 Issue 12, p4405; Subject Term: NANOTUBES; Subject Term: THERMOPLASTICS; Subject Term: ELASTOMERS; Subject Term: POLYMERS; Subject Term: CRYSTALLIZATION; Author-Supplied Keyword: Elastomer; Author-Supplied Keyword: Multiwall carbon nanotube; Author-Supplied Keyword: Nanocomposites; NAICS/Industry Codes: 325212 Synthetic Rubber Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.polymer.2005.02.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17855192&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Justice, Ryan S. AU - Schaefer, Dale W. AU - Vaia, Richard A. AU - Tomlin, David W. AU - Bunning, Timothy J. T1 - Interface morphology and phase separation in polymer-dispersed liquid crystal composites JO - Polymer JF - Polymer Y1 - 2005/05/15/ VL - 46 IS - 12 M3 - Article SP - 4465 EP - 4473 SN - 00323861 AB - Abstract: It is widely appreciated that electro-optic activity in polymer-dispersed liquid crystals (PDLCs) depends on separation of the polymer and liquid crystal (LC) phases. Since the phase structure develops in a non-equilibrium system, the morphology of the LC domains depends on the details of the chemical and physical processes active during domain formation. The nature of the interface between the polymer and liquid crystal phases is of particular interest. This work discusses the two-phase morphology in an acrylate-based system that develops during polymerization-induced phase separation (PIPS). Using small-angle X-ray scattering (SAXS) and ultra-small-angle X-ray scattering (USAXS), we find that interfaces in PDLCs developed from an acrylate-based recipe are more disordered than generally appreciated. Information gained from SAXS and USAXS is compared to data from scanning electron microscopy (SEM) and transmission electron microscopy (TEM). To elucidate the apparent discrepancies between imaging and scattering, we investigated the effects of SEM sample preparation. We observe significant alteration of the interface morphology due to the leaching of the LC phase. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROOPTICS KW - LIQUID crystals KW - POLYMERS KW - MORPHOLOGY KW - X-ray scattering KW - SCANNING electron microscopy KW - TRANSMISSION electron microscopy KW - Interface morphology KW - PIPS KW - Small-angle X-ray scattering N1 - Accession Number: 17855198; Justice, Ryan S. 1 Schaefer, Dale W. 1; Email Address: dale.schaefer@uc.edu Vaia, Richard A. 2 Tomlin, David W. 3 Bunning, Timothy J. 2; Affiliation: 1: University of Cincinnati, P.O. Box 210012, Cincinnati, OH 45221, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH 45433, USA 3: UES Incorporated, Dayton, OH 45432, USA; Source Info: May2005, Vol. 46 Issue 12, p4465; Subject Term: ELECTROOPTICS; Subject Term: LIQUID crystals; Subject Term: POLYMERS; Subject Term: MORPHOLOGY; Subject Term: X-ray scattering; Subject Term: SCANNING electron microscopy; Subject Term: TRANSMISSION electron microscopy; Author-Supplied Keyword: Interface morphology; Author-Supplied Keyword: PIPS; Author-Supplied Keyword: Small-angle X-ray scattering; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.polymer.2005.02.029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17855198&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Berdichevsky, V. AU - Dimiduk, D. T1 - On failure of continuum plasticity theories on small scales JO - Scripta Materialia JF - Scripta Materialia Y1 - 2005/05/15/ VL - 52 IS - 10 M3 - Article SP - 1017 EP - 1019 SN - 13596462 AB - Abstract: We argue that continuum plasticity theories cannot describe plastic behavior if the characteristic length of the problem becomes of the order of the decorrelation length of the dislocation structure. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASTICITY KW - CONTINUUM (Mathematics) KW - DEFORMATIONS (Mechanics) KW - ELASTICITY KW - Dislocation theory KW - Micro-mechanics N1 - Accession Number: 17473160; Berdichevsky, V. 1; Email Address: vberd@eng.wayne.edu Dimiduk, D. 2; Affiliation: 1: Mechanical Engineering, Wayne State University, Detroit, MI 48202, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Dayton, OH 45433, USA; Source Info: May2005, Vol. 52 Issue 10, p1017; Subject Term: PLASTICITY; Subject Term: CONTINUUM (Mathematics); Subject Term: DEFORMATIONS (Mechanics); Subject Term: ELASTICITY; Author-Supplied Keyword: Dislocation theory; Author-Supplied Keyword: Micro-mechanics; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.scriptamat.2005.01.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17473160&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Olowolafe, J.O. AU - Solomon, J.S. AU - Mitchel, W. AU - Lampert, W.V. T1 - Thermal and electrical properties of Au/B4C, Ni/B4C, and Ta/Si contacts to silicon carbide JO - Thin Solid Films JF - Thin Solid Films Y1 - 2005/05/15/ VL - 479 IS - 1/2 M3 - Article SP - 59 EP - 63 SN - 00406090 AB - Abstract: The role of silicon and boron carbide interface layers on thermal stability and electrical properties of tantalum, gold, and nickel contacts to 6H- and 4H-n-silicon carbide are presented in this report. Thin Ta/Si, Au/B4C, and Ni/B4C layers were deposited on SiC using electron-beam evaporation or sputter-deposition techniques. The structures were annealed either in ultra-high vacuum or in N–H ambient, at temperatures ranging from about 400 to 1150 °C. The samples were characterized using atomic force microscopy for surface topography, auger electron spectrometry for depth profiling, and glancing angle X-ray diffraction for microstructure and phase identification analyses. Transmission line model structures for current–voltage measurements and contact resistance evaluation were prepared using photolithography and lift-off techniques. Our results indicate that Ta in the Ta/SiC system decomposes SiC at about 800 °C, forming tantalum carbide with the accumulation of silicon at the TaC/SiC interface. In the Ta/Si/SiC system decomposition of SiC also occurs about the same temperature resulting in the structure TaC/Si/SiC. The Au/B4C/SiC system appears to be the most thermally stable with the lowest specific contact resistance of about 1×10−6 Ω cm2 for samples heat-treated above 1050 °C for 30 min. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON carbide KW - THIN films KW - TANTALUM KW - SCANNING probe microscopy KW - GOLD KW - Boron carbide KW - Gold KW - Silicon carbide KW - Tantalum N1 - Accession Number: 17621427; Olowolafe, J.O. 1; Email Address: olowolaf@ee.udel.edu Solomon, J.S. 2 Mitchel, W. 3 Lampert, W.V. 4; Affiliation: 1: Department of Electrical and Computer Engineering, University of Delaware, Newark, DE 19716, USA 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/ML) Wright Patterson AFB, OH 45433, USA 4: US Army Research Office PO Box 12211 Research Triangle Park, NC 27709, USA; Source Info: May2005, Vol. 479 Issue 1/2, p59; Subject Term: SILICON carbide; Subject Term: THIN films; Subject Term: TANTALUM; Subject Term: SCANNING probe microscopy; Subject Term: GOLD; Author-Supplied Keyword: Boron carbide; Author-Supplied Keyword: Gold; Author-Supplied Keyword: Silicon carbide; Author-Supplied Keyword: Tantalum; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.tsf.2004.11.188 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17621427&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shore, R. A. AU - Yaghjian, A. D. T1 - Travelling electromagnetic waves on linear periodic arrays of lossless spheres. JO - Electronics Letters JF - Electronics Letters Y1 - 2005/05/12/ VL - 41 IS - 10 M3 - Article SP - 578 EP - 580 PB - Institution of Engineering & Technology SN - 00135194 AB - Source scattering-matrix analyses of travelling waves on infinite linear periodic arrays of loss less spheres and of small electric wires are applied to determine the propagation constants of dipolar travelling waves on an infinite linear periodic chain of metallic nanospheres. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC waves KW - ELECTROMAGNETIC theory KW - ELECTRIC cables KW - ELECTRIC conductors KW - ELECTRIC fields KW - MAGNETIC fields N1 - Accession Number: 17035473; Shore, R. A. 1; Email Address: robert.shore@hanscom.af.mil Yaghjian, A. D. 1; Affiliation: 1: Air Force Research Laboratory, 80 Scott Drive, Hansconz AFB, MA 01731-2909, USA; Source Info: 5/12/2005, Vol. 41 Issue 10, p578; Subject Term: ELECTROMAGNETIC waves; Subject Term: ELECTROMAGNETIC theory; Subject Term: ELECTRIC cables; Subject Term: ELECTRIC conductors; Subject Term: ELECTRIC fields; Subject Term: MAGNETIC fields; NAICS/Industry Codes: 335920 Communication and energy wire and cable manufacturing; NAICS/Industry Codes: 335990 All other electrical equipment and component manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1049/el:20058372 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17035473&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pati, Ranjit AU - Pineda, Andrew C. AU - Pandey, Ravindra AU - Karna, Shashi P. T1 - Ab initio quantum chemical study of electron transfer in carboranes JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2005/05/03/ VL - 406 IS - 4-6 M3 - Article SP - 483 EP - 488 SN - 00092614 AB - Abstract: The electron transfer (ET) properties of 10- and 12-vertex carboranes are investigated by the ab initio Hartree–Fock method within the Marcus-Hush (MH) two-state model and the Koopman theorem (KT) approach. The calculated value of the ET coupling matrix element, V AB, is consistently higher in the KT approach than in the MH two-state model. For the carborane molecules functionalized by –CH2 groups at C-vertices, V AB strongly depends on the relative orientation of the planes containing the terminal –CH2 groups. The predicted conformation dependence of V AB offers a molecular mechanism to control ET between two active centers in molecular systems. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHARGE exchange KW - ELECTRONS KW - COLLISIONS (Nuclear physics) KW - HARTREE-Fock approximation N1 - Accession Number: 17667349; Pati, Ranjit 1; Email Address: patir@mtu.edu Pineda, Andrew C. 2,3 Pandey, Ravindra 1 Karna, Shashi P. 4; Email Address: skarna@arl.army.mil; Affiliation: 1: Department of Physics, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, USA 2: The Center for High Performance Computing and the Department of Chemistry, The University of New Mexico, MSC01 1190, 1 University of New Mexico, Albuquerque, NM 87131-0001, USA 3: US Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Ave, SE, Kirtland Air Force Base, NM 87117-5776, USA 4: US Army Research Laboratory, Weapons and Materials Research Directorate, ATTN: AMSRD-ARL-WM-BD; Aberdeen Proving Ground, MD 21005-5069, USA; Source Info: May2005, Vol. 406 Issue 4-6, p483; Subject Term: CHARGE exchange; Subject Term: ELECTRONS; Subject Term: COLLISIONS (Nuclear physics); Subject Term: HARTREE-Fock approximation; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.cplett.2005.03.039 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17667349&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Daibog, E.I. AU - Kahler, S. AU - Kecskeméty, K. AU - Logachev, Yu.I. T1 - Relation of decline characteristics of 2–4.6MeV protons in SEP events to solar wind parameters JO - Advances in Space Research JF - Advances in Space Research Y1 - 2005/05// VL - 35 IS - 10 M3 - Article SP - 1882 EP - 1886 SN - 02731177 AB - Abstract: The shape of the particle flux decline in solar energetic particle (SEP) events is of particular importance in understanding the propagation of energetic particles in the interplanetary medium. Power-law time profiles indicate the dominance of diffusive propagation, whereas exponential-law decline emphasizes convection transport and adiabatic deceleration. Values obtained theoretically for the decay time in the latter case are reasonably close to the fitted slopes in nearly half of all events when the solar wind speed stays nearly constant. Dependencies of characteristic decay time τ and spectral index γ on environmental plasma parameters are considered. Parts of exponential-law declines when solar wind speed: (a) decreases with time, (b) is constant, and (c) increases with time through the interval are analyzed separately. Both average values and dispersions of size distributions of τ for these three groups markedly differ in accordance with theoretical expectations. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR activity KW - SOLAR wind KW - SOLAR corona KW - ACCELERATION (Mechanics) KW - Charged particle propagation KW - Solar energetic particles N1 - Accession Number: 18319618; Daibog, E.I. 1 Kahler, S. 2 Kecskeméty, K. 3; Email Address: kecske@rmki.kfki.hu Logachev, Yu.I. 1; Affiliation: 1: Skobeltsyn Institute of Nuclear Physics Moscow State University, 119992 Moscow, Russia 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA 01731, USA 3: KFKI Research Institute for Particle and Nuclear Physics, H-1525 Budapest, POB 49, Hungary; Source Info: 2005, Vol. 35 Issue 10, p1882; Subject Term: SOLAR activity; Subject Term: SOLAR wind; Subject Term: SOLAR corona; Subject Term: ACCELERATION (Mechanics); Author-Supplied Keyword: Charged particle propagation; Author-Supplied Keyword: Solar energetic particles; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.asr.2005.01.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18319618&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gaitonde, Datta V. AU - Miller, James H. T1 - Eddy-Current-Based Momentum Transfer Method to Suppress Three-Dimensional Separation. JO - AIAA Journal JF - AIAA Journal Y1 - 2005/05// VL - 43 IS - 5 M3 - Article SP - 1064 EP - 1074 SN - 00011452 AB - A magnetogasdynamic technique is explored to alleviate separation in a three-dimensional crossing-shock turbulent boundary-layer interaction. An eddy-current-based momentum transfer mechanism is proposed to enhance the momentum of near-wall fluid by generating appropriate accelerating forces. An established numerical methodology, blending first-principles and phenomenological models, is utilized to demonstrate the technique to eliminate secondary separation observed in strong interactions. The circulating current is generated by applying a uniform magnetic field in an electrically conducting region spanning both near-wall low-momentum regions as well as high-speed outer flow and bounded by insulated walls. The "trapping" of electrical current is ensured by the generation of an induced electric field, which overwhelms the motional electromotive field near the surface. Under these conditions, ponderomotive forces slow the outer fluid while accelerating the near-wall low-speed regime, thus enhancing its ability to overcome adverse pressure gradients without separation. The complex and highly three-dimensional interplay between velocity, magnetic, current, and electric field vectors is described. Effects of force and heat release are differentiated through discriminating simulations. Despite complete local laminarization of the flow by the damping effect of the magnetic field, near-wall accelerating forces eliminate manifestations of secondary separation. In contrast, heating, by itself, aggravates secondary separation. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - MOMENTUM transfer KW - TRANSPORT theory (Mathematics) KW - SEPARATION (Technology) KW - GAS dynamics KW - MAGNETIC fields N1 - Accession Number: 16994637; Gaitonde, Datta V. 1 Miller, James H. 1; Affiliation: 1: U.S, Air force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: May2005, Vol. 43 Issue 5, p1064; Subject Term: EDDY currents (Electric); Subject Term: MOMENTUM transfer; Subject Term: TRANSPORT theory (Mathematics); Subject Term: SEPARATION (Technology); Subject Term: GAS dynamics; Subject Term: MAGNETIC fields; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16994637&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Daniel, Terry AU - Parco, James T1 - Fair, Efficient and Envy-Free Bargaining: An Experimental Test of the Brams-Taylor Adjusted Winner Mechanism. JO - Group Decision & Negotiation JF - Group Decision & Negotiation Y1 - 2005/05// VL - 14 IS - 3 M3 - Article SP - 241 EP - 264 SN - 09262644 AB - The Adjusted Winner mechanism for two-player bargaining has been theoretically shown to produce “fair” (efficient and envy-free) outcomes (Brams and Taylor 1996). We study this claim experimentally in a bilateral bargaining game of incomplete information for two divisible goods using three information conditions. Results indicate that the Adjusted Winner mechanism can be quite effective in achieving both efficient, equitable and envy-free outcomes in an experimental setting but results vary greatly depending on the knowledge that each party has of the preferences of their bargaining partner. Under conditions of common knowledge, when players have competing preferences, their bilateral decisions converge toward efficient outcomes, yet only one-third can be classified as “envy-free.” In an environment where there is more uncertainty about preferences, pronounced strategic bidding emerges yet the result is twice as many envy-fee outcomes with increased levels of efficiency. Despite the fact that players dramatically misrepresent their true valuation for objects when ordinal preferences are commonly known to be complementary, both efficiency and envy-freeness approach maximum levels. [ABSTRACT FROM AUTHOR] AB - Copyright of Group Decision & Negotiation is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLECTIVE bargaining KW - INDUSTRIAL relations KW - PHYSICAL distribution of goods KW - PHYSICAL distribution of goods -- Management KW - MARKETING KW - BUSINESS KW - adjusted winner mechanism KW - bilateral bargaining KW - fairness KW - incomplete information KW - sealed bid N1 - Accession Number: 17885068; Daniel, Terry 1; Email Address: terry.daniel@ualberta.ca Parco, James 2; Email Address: james.parco@usafa.af.mil; Affiliation: 1: Dept. of Finance and Management Science, University of Alberta, Edmonton Canada T6G 2R6 2: Dept. of Management, United States Air Force Academy, Colorado Springs 80840; Source Info: May2005, Vol. 14 Issue 3, p241; Subject Term: COLLECTIVE bargaining; Subject Term: INDUSTRIAL relations; Subject Term: PHYSICAL distribution of goods; Subject Term: PHYSICAL distribution of goods -- Management; Subject Term: MARKETING; Subject Term: BUSINESS; Author-Supplied Keyword: adjusted winner mechanism; Author-Supplied Keyword: bilateral bargaining; Author-Supplied Keyword: fairness; Author-Supplied Keyword: incomplete information; Author-Supplied Keyword: sealed bid; NAICS/Industry Codes: 541613 Marketing Consulting Services; NAICS/Industry Codes: 541619 Other management consulting services; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; Number of Pages: 24p; Document Type: Article L3 - 10.1007/s10726-005-1245-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17885068&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shore, Robert A. AU - Yaghjian, Arthur D. T1 - Dual-Surface Integral Equations in Electromagnetic Scattering. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2005/05// VL - 53 IS - 5 M3 - Article SP - 1706 EP - 1709 SN - 0018926X AB - A brief review is given of the derivation and application of dual-surface Integral equations, which eliminate the spurious resonances from the solution to the original electric-field and magnetic-field Integral equations applied to perfectly electrically conducting scatterers. Emphasis is placed on numerical solutions of the dual-surface electric-field integral equation for three-dimensional perfectly electrically conducting scatterers. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETISM KW - MAGNETIC induction KW - INTEGRAL equations KW - NUMERICAL analysis KW - ELECTRIC fields KW - ELECTROMAGNETIC fields N1 - Accession Number: 17052553; Shore, Robert A. 1 Yaghjian, Arthur D. 1; Email Address: arthur.yaghjian@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory (AFRL), Hanscom AFB, MA 01731 USA.; Source Info: May2005, Vol. 53 Issue 5, p1706; Subject Term: ELECTROMAGNETISM; Subject Term: MAGNETIC induction; Subject Term: INTEGRAL equations; Subject Term: NUMERICAL analysis; Subject Term: ELECTRIC fields; Subject Term: ELECTROMAGNETIC fields; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TAP2005.846806 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17052553&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H.J. AU - Brown, G.J. AU - Szmulowicz, F. AU - Grazulis, L. AU - Mitchel, W.C. AU - Elhamri, S. AU - Mitchell, W.D. T1 - InAs/GaSb type-II superlattices for high performance mid-infrared detectors JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2005/05// VL - 278 IS - 1-4 M3 - Article SP - 198 EP - 202 SN - 00220248 AB - Abstract: The superlattice (SL) design parameters of a 50 period InAs/GaSb SL structure with InSb-like interfaces (IFs) were systematically varied around the InAs/ GaSb design in order to explore the parameter space for maximum photoresponse in the 3–5m mid-infrared atmospheric window. Using previously optimized growth conditions, the SL structures were grown on p-type GaSb substrates by molecular beam epitaxy with precisely calibrated growth rates. The electrical properties of the SLs were characterized by magnetic field-dependent Hall effect measurements below the carrier freeze-out temperature of the p-type substrate. Multi-carrier analysis at 4.2K determined an electron sheet carrier concentration of with a mobility of /Vs. Two sets of SLs were used in the optimization process: the first set with a fixed InAs width of 26Å, and the second with a fixed GaSb width of . As the GaSb layer width varied from 15 to , the photoresponse cut-off wavelength shifted from 6.47 to m. Similarly, as the InAs width varied from 26 to 13Å, the cut-off wavelength shifted from 5.08 to m. The strongest photoresponse in the 3–5m mid-IR window was achieved with the InAs (20Å)/GaSb (27Å) SL design. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - MOLECULAR beam epitaxy KW - MOLECULAR dynamics KW - ELECTRIC currents KW - A3. Molecular beam epitaxy KW - A3. Superlattices KW - B1. Antimonides KW - B1. InAs/GaSb KW - B3. Infrared detector KW - B3. Semiconductor devices N1 - Accession Number: 17683558; Haugan, H.J.; Email Address: heather.haugan@wpafb.afrl.mil Brown, G.J. 1 Szmulowicz, F. 1 Grazulis, L. 1 Mitchel, W.C. 1 Elhamri, S. 1 Mitchell, W.D. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7707, USA; Source Info: May2005, Vol. 278 Issue 1-4, p198; Subject Term: SUPERLATTICES; Subject Term: MOLECULAR beam epitaxy; Subject Term: MOLECULAR dynamics; Subject Term: ELECTRIC currents; Author-Supplied Keyword: A3. Molecular beam epitaxy; Author-Supplied Keyword: A3. Superlattices; Author-Supplied Keyword: B1. Antimonides; Author-Supplied Keyword: B1. InAs/GaSb; Author-Supplied Keyword: B3. Infrared detector; Author-Supplied Keyword: B3. Semiconductor devices; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.jcrysgro.2005.01.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17683558&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Repperger, D.W. AU - Phillips, C.A. AU - Neidhard-Doll, A. AU - Reynolds, D.B. AU - Berlin, J. T1 - Power/energy metrics for controller evaluation of actuators similar to biological systems JO - Mechatronics JF - Mechatronics Y1 - 2005/05// VL - 15 IS - 4 M3 - Article SP - 459 EP - 469 SN - 09574158 AB - Abstract: An evaluation of controller design is performed on an actuator, which resembles a biological system (pneumatic muscle actuator). The procedures studied herein do not require any presumptions of linearity or stationarity. A comparison across various controllers was obtained by considering a pneumatic muscle system being used in a force control sense over a full cycle of operation. Such an actuator has many advantages (extremely high power/weight, power/volume and power/energy ratios). A number of power and energy related measures were assessed including: (1) a workloop metric to specify the external work output of the actuator produced on the environment, (2) a power ellipsoid method to examine efficiency over one cycle of operation, and (3) other key power and energy related criteria, e.g. when peak power varies as a function of the velocity produced. [Copyright &y& Elsevier] AB - Copyright of Mechatronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AUTOMATIC control KW - SYSTEMS theory KW - ACTUATORS KW - BIOLOGICAL systems KW - Biomimicry KW - Controller evaluation KW - Force control KW - Pneumatic muscle actuator KW - Power/energy methods N1 - Accession Number: 17343585; Repperger, D.W. 1 Phillips, C.A. 2 Neidhard-Doll, A. 2 Reynolds, D.B. 2 Berlin, J. 3; Affiliation: 1: Air Force Research Laboratory, WPAFB, OH, 45433, USA 2: School of Biomedical, Human Factors and Industrial Engineering, Wright State University, Dayton, OH, 45435, USA 3: General Dynamics, Dayton, OH, 45458, USA; Source Info: May2005, Vol. 15 Issue 4, p459; Subject Term: AUTOMATIC control; Subject Term: SYSTEMS theory; Subject Term: ACTUATORS; Subject Term: BIOLOGICAL systems; Author-Supplied Keyword: Biomimicry; Author-Supplied Keyword: Controller evaluation; Author-Supplied Keyword: Force control; Author-Supplied Keyword: Pneumatic muscle actuator; Author-Supplied Keyword: Power/energy methods; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.mechatronics.2004.10.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17343585&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ketchum, Norma S. AU - Michalek, Joel E. T1 - Postservice Mortality of Air Force Veterans Occupationally Exposed to Herbicides during the Vietnam War: 20-Year Follow-Up Results. JO - Military Medicine JF - Military Medicine Y1 - 2005/05// VL - 170 IS - 5 M3 - Article SP - 406 EP - 413 PB - AMSUS SN - 00264075 AB - Since 1982, the Air Force Health Study has continued to assess the mortality for veterans of Operation Ranch Hand, the unit responsible for aerially spraying herbicides in Vietnam. The mortality for 1,262 Ranch Hand veterans to December 31, 1999 was contrasted with that for 19,078 comparison veterans. The relative risk (RR) for all-cause death was borderline significantly increased (RR, 1.15; 95% confidence interval, 1.0-1.3; p = 0.06). The risk of death caused by cancer was not increased (RR = 1.0), but the risk of death caused by circulatory system diseases was significantly increased among en-listed ground crew workers (RR = 1.7; 95% confidence interval, 1.2-2,4: p = 0.001), Results for Ranch Hand all-cause death differed from previous reports, with the RR now exceeding 1.0, The risk of death attributable to circulatory system diseases continues to be increased, especially for enlisted ground crew, a subgroup with relatively high skin exposure to herbicides. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Medicine is the property of AMSUS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MORTALITY KW - VIETNAM veterans KW - HERBICIDES in war KW - VIETNAM War, 1961-1975 KW - UNITED States. Air Force N1 - Accession Number: 17144736; Ketchum, Norma S. 1 Michalek, Joel E. 1; Affiliation: 1: Air Force Research Laboratory, Brooks City-Base, TX 78235-5137; Source Info: May2005, Vol. 170 Issue 5, p406; Subject Term: MORTALITY; Subject Term: VIETNAM veterans; Subject Term: HERBICIDES in war; Subject Term: VIETNAM War, 1961-1975; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 8p; Illustrations: 8 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17144736&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhang, Shouyin AU - Intrator, T. P. AU - Wurden, G. A. AU - Waganaar, W. J. AU - Taccetti, J. M. AU - Renneke, R. AU - Grabowski, C. AU - Ruden, E. L. T1 - Confinement analyses of the high-density field-reversed configuration plasma in the field-reversed configuration experiment with a liner. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2005/05// VL - 12 IS - 5 M3 - Article SP - 052513 PB - American Institute of Physics SN - 1070664X AB - The focus of the field-reversed configuration (FRC) experiment with a liner (FRX-L) is the formation of a target FRC plasma for magnetized target fusion experiments. An FRC plasma with density of 1023 m-3, total temperature in the range of 150–300 eV, and a lifetime of ≈20 μs is desired. Field-reversed θ-pinch technology is used with programed cusp fields at θ-coil ends to achieve non-tearing field line reconnections during FRC formation. Well-formed FRCs with density between (2–4)×1022 m-3, lifetime in the range of 15–20 μs, and total temperature between 300–500 eV are reproducibly created. Key FRC parameters have standard deviation in the mean of 10% during consecutive shots. The FRCs are formed at 50 mTorr deuterium static fill using 2 kG net reversed bias field inside the θ-coil confinement region, with external main field unexpectedly ranging between 15–30 kG. The high-density FRCs confinement properties are approximately in agreement with empirical scaling laws obtained from previous experiments with fill pressure mostly less than 20 mTorr. Analyses in this paper reveal that reducing the external main field modulation and/or extending the θ-coil length in the FRX-L device are critical in achieving higher FRC parameters for application in magnetized target fusion. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA confinement KW - PARTICLES (Nuclear physics) KW - ANALYSIS of variance KW - PLASMA (Ionized gases) KW - ELECTROMAGNETIC fields KW - NUCLEAR physics KW - FIELD-reversed configuration N1 - Accession Number: 17106189; Zhang, Shouyin 1; Email Address: sy_zhang66@hotmail.com Intrator, T. P. 1 Wurden, G. A. 1 Waganaar, W. J. 1 Taccetti, J. M. 1 Renneke, R. 1 Grabowski, C. 2 Ruden, E. L. 3; Affiliation: 1: Los Alamos National Laboratory, Los Alamos, New Mexico 87545. 2: Science Applications International Corporation, Albuquerque, New Mexico 87106. 3: Air Force Research Laboratory, Albuquerque, New Mexico 87117.; Source Info: May2005, Vol. 12 Issue 5, p052513; Subject Term: PLASMA confinement; Subject Term: PARTICLES (Nuclear physics); Subject Term: ANALYSIS of variance; Subject Term: PLASMA (Ionized gases); Subject Term: ELECTROMAGNETIC fields; Subject Term: NUCLEAR physics; Subject Term: FIELD-reversed configuration; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.1899648 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17106189&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Katayama, Andrew D. AU - Shambaugh, R. Neal AU - Doctor, Tasneem T1 - Promoting Knowledge Transfer With Electronic Note Taking. JO - Teaching of Psychology JF - Teaching of Psychology Y1 - 2005///Spring2005 VL - 32 IS - 2 M3 - Article SP - 129 EP - 131 PB - Sage Publications Inc. SN - 00986283 AB - We investigated the differences between (a) copying and pasting text versus typed note-taking methods of constructing study notes simultaneously with (b) vertically scaffolded versus horizontally scaffold notes on knowledge transfer. Forty-seven undergraduate educational psychology students participated. Materials included 2 electronic chapter-length texts, 2 sets of computerized study notes, 2 tests (fact and application), and an attitudinal survey. Only the application test revealed a significant main effect for notes format. We conclude that keying in notes leads to higher retention of knowledge transfer than copying and pasting notes after a 1-week delay. [ABSTRACT FROM AUTHOR] AB - Copyright of Teaching of Psychology is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - KNOWLEDGE management KW - PSYCHOLOGY KW - REPORT writing KW - STUDY skills KW - EDUCATIONAL psychology KW - CHILD psychology N1 - Accession Number: 16805899; Katayama, Andrew D. 1 Shambaugh, R. Neal 2 Doctor, Tasneem 2; Affiliation: 1: United States Air Force Academy 2: West Virginia University, Emerita; Source Info: Spring2005, Vol. 32 Issue 2, p129; Subject Term: KNOWLEDGE management; Subject Term: PSYCHOLOGY; Subject Term: REPORT writing; Subject Term: STUDY skills; Subject Term: EDUCATIONAL psychology; Subject Term: CHILD psychology; NAICS/Industry Codes: 611710 Educational Support Services; NAICS/Industry Codes: 611691 Exam Preparation and Tutoring; Number of Pages: 3p; Document Type: Article L3 - 10.1207/s15328023top3202_9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16805899&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Duan, Xiaofeng AU - Akdim, Brahim AU - Pachter, Ruth T1 - A theoretical study of Cs adsorption at tips of single-wall carbon nanotubes: field emission properties JO - Applied Surface Science JF - Applied Surface Science Y1 - 2005/04/30/ VL - 243 IS - 1-4 M3 - Article SP - 11 EP - 18 SN - 01694332 AB - Abstract: Cs intercalation has demonstrated experimentally a significant reduction of the work function of carbon nanotubes, thus improving field emission properties. In this paper, we report a density functional theory (DFT) study within the generalized gradient approximation (GGA), regarding the effects of Cs on field emission of single-wall carbon nanotubes (SWCNTs). Specifically, a comprehensive examination was carried out to investigate the effects of Cs adsorbed on capped and open-ended C(5,5) armchair SWCNT tips. Our calculations showed a reduction in the ionization potential (IP) upon Cs physisorption, thus improving the emission properties of carbon nanotubes, as reported experimentally. The structure of the adsorbed Cs-cluster, the corresponding adsorption energies, and the IPs, were altered upon the inclusion of a local electric field in the calculations to mimic the emission environment. [Copyright &y& Elsevier] AB - Copyright of Applied Surface Science is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADSORPTION KW - NANOTUBES KW - FULLERENES KW - FIELD emission KW - Cs adsorption KW - Density functional theory KW - Field emission KW - Single-wall carbon nanotubes N1 - Accession Number: 19175050; Duan, Xiaofeng 1 Akdim, Brahim 2 Pachter, Ruth 2; Email Address: ruth.pachter@wpafb.af.mil; Affiliation: 1: Aeronautical Systems Center Major Shared Resource Center for High Performance Computing, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio, OH 45433 USA; Source Info: Apr2005, Vol. 243 Issue 1-4, p11; Subject Term: ADSORPTION; Subject Term: NANOTUBES; Subject Term: FULLERENES; Subject Term: FIELD emission; Author-Supplied Keyword: Cs adsorption; Author-Supplied Keyword: Density functional theory; Author-Supplied Keyword: Field emission; Author-Supplied Keyword: Single-wall carbon nanotubes; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.apsusc.2004.05.300 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19175050&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hasson, V. AU - Mead, F. B. AU - Larson, C. W. AU - Chou, H. P. T1 - Launching of Micro-satellites Using Ground-based High-power Pulsed Lasers. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2005/04/27/ VL - 766 IS - 1 M3 - Article SP - 32 EP - 45 PB - American Institute of Physics SN - 0094243X AB - This paper reviews the basic concepts of laser propulsion and summarizes work done to date using a 10 kW device. The paper describes a candidate megawatt class CO2 laser system which can be scaled relatively near-term to multi-megawatt power levels using demonstrated technology. Such a system would potentially be capable of launching micro-satellites into low earth orbits (LEO) at relatively low cost. Our projections indicate that payloads of about 1kg/megawatt are achievable. The long wavelength of a CO2 laser will require the use of a large aperture telescope and/or large effective beam capture area for the lift vehicle. We believe that these limitations, not withstanding, rep-pulsed CO2 in a blow-down configuration lasting 200–300 seconds could achieve the desired propulsion objectives. The laser would use a helium-free, nitrogen/carbon dioxide mixture to provide a very cost effective fuel. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS -- Industrial applications KW - COST effectiveness KW - ORBITS KW - NONLINEAR optics KW - TELESCOPES KW - PROPULSION systems N1 - Accession Number: 16975853; Hasson, V. 1 Mead, F. B. 2 Larson, C. W. 3 Chou, H. P. 1,2,3; Affiliation: 1: Trex Enterprises Corporation, 10455 Pacific Center Court, San Diego, CA 92121. 2: Air Force Research Laboratory, Propulsion Directorate, Edwards Air Force Base, CA 93524. 3: Textron Systems Division, 201 Lowell Street, Wilmington, MA 01887.; Source Info: 2005, Vol. 766 Issue 1, p32; Subject Term: LASERS -- Industrial applications; Subject Term: COST effectiveness; Subject Term: ORBITS; Subject Term: NONLINEAR optics; Subject Term: TELESCOPES; Subject Term: PROPULSION systems; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 453999 All other miscellaneous store retailers (except beer and wine-making supplies stores); Number of Pages: 14p; Document Type: Article L3 - 10.1063/1.1925130 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16975853&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sterling, Enrique AU - Pakhomov, Andrew V. AU - Larson, C. William AU - Mead, Franklin B. T1 - Absorption-Enhanced Liquid Ablatants for Propulsion with TEA CO2 Laser. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2005/04/27/ VL - 766 IS - 1 M3 - Article SP - 474 EP - 481 PB - American Institute of Physics SN - 0094243X AB - A technique based on measuring force as a function of time on laser-ablated targets was applied to the study of water solutions of Sodium Tetrafluoroborate [NaBF4], a compound that strongly absorbs radiation in the 8–11 μm wavelength interval. A TEA CO2 laser of wavelength 10.6 μm, 300 ns pulsewidth and 8 J pulse energy, was used for ablation of water diluted NaBF4 contained in a conical aluminum nozzle. Net imparted impulse and coupling coefficient were derived from the force sensor data and are reported below. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - ABLATION (Aerothermodynamics) KW - HEAT transfer KW - PROPULSION systems KW - SODIUM compounds KW - RADIATION N1 - Accession Number: 16975815; Sterling, Enrique 1 Pakhomov, Andrew V. 1 Larson, C. William 2 Mead, Franklin B. 2; Affiliation: 1: Department of Physics, The University of Alabama in Huntsville, Huntsville, AL 35899. 2: Propulsion Directorate, Air Force Research Laboratory, Edwards AFB, CA 93524-7680.; Source Info: 2005, Vol. 766 Issue 1, p474; Subject Term: LASERS; Subject Term: ABLATION (Aerothermodynamics); Subject Term: HEAT transfer; Subject Term: PROPULSION systems; Subject Term: SODIUM compounds; Subject Term: RADIATION; NAICS/Industry Codes: 212391 Potash, Soda, and Borate Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.1925168 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16975815&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Choi, Y.S. AU - Parthasarathy, T.A. AU - Dimiduk, D.M. AU - Uchic, M.D. T1 - Numerical study of the flow responses and the geometric constraint effects in Ni-base two-phase single crystals using strain gradient plasticity JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2005/04/25/ VL - 397 IS - 1/2 M3 - Article SP - 69 EP - 83 SN - 09215093 AB - Abstract: The [001] tensile flow of a single-crystal superalloy (CMSX-4) having a high volume fraction of regularly-arrayed cuboidal γ′ precipitates was simulated using a gradient-dependent plasticity model for the constitutive description of the γ-matrix. The simulated flow curves showed flow softening in the early stage of straining. Flow softening was accompanied by the organized catastrophic plastic flow of the γ-matrix, which resulted from the breakdown of the geometric (or kinematic) constraints imposed by the γ/γ′ microstructure. The flow-softening behavior was influenced by the thickness of γ-matrix channels (a volume fraction of the γ′ precipitates), the flow property of the γ-matrix and the geometry of the γ′-precipitate edge. In particular, changing the radius of the γ′-precipitate edge resulted in a dramatic variations in the flow curves. The present unit-cell simulations exhibited good predictions for the γ′-precipitate size dependence of the flow stress at moderate strains. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NICKEL compounds KW - CRYSTALS KW - MICROSTRUCTURE KW - MICROMECHANICS KW - Geometric constraint KW - Single crystal superalloy KW - Strain gradient plasticity KW - Unit cell KW - [001] Tension N1 - Accession Number: 17698164; Choi, Y.S. 1; Email Address: ychoi@ues.com Parthasarathy, T.A. 1; Email Address: triplicane.parthasarathy@wpafb.af.mil Dimiduk, D.M. 2; Email Address: dennis.dimiduk@wpafb.af.mil Uchic, M.D. 2; Email Address: michael.uchic@wpafb.af.mil; Affiliation: 1: UES, Inc. 4401 Dayton-Xenia Rd., Dayton, OH 45432-1894, USA 2: Air Force Research Laboratory, AFRL/MLLM, 2230 Tenth Street, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Apr2005, Vol. 397 Issue 1/2, p69; Subject Term: NICKEL compounds; Subject Term: CRYSTALS; Subject Term: MICROSTRUCTURE; Subject Term: MICROMECHANICS; Author-Supplied Keyword: Geometric constraint; Author-Supplied Keyword: Single crystal superalloy; Author-Supplied Keyword: Strain gradient plasticity; Author-Supplied Keyword: Unit cell; Author-Supplied Keyword: [001] Tension; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.msea.2005.01.057 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17698164&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tang, X. N. AU - Xu, H. AU - Zhang, T. AU - Hou, Y. AU - Chang, C. AU - Ng, C. Y. AU - Chiu, Y. AU - Dressler, R. A. AU - Levandier, D. J. T1 - A pulsed-field ionization photoelectron secondary ion coincidence study of the H2+(X,υ+=0–15,N+=1)+He proton transfer reaction. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2005/04/22/ VL - 122 IS - 16 M3 - Article SP - 164301 PB - American Institute of Physics SN - 00219606 AB - The endothermic proton transfer reaction, H2+(υ+)+He→HeH++H(ΔE=0.806 eV), is investigated over a broad range of reactant vibrational levels using high-resolution vacuum ultraviolet to prepare reactant ions either through excitation of autoionization resonances, or using the pulsed-field ionization-photoelectron-secondary ion coincidence (PFI-PESICO) approach. In the former case, the translational energy dependence of the integral reaction cross sections are measured for υ+=0–3 with high signal-to-noise using the guided-ion beam technique. PFI-PESICO cross sections are reported for υ+=1–15 and υ+=0–12 at center-of-mass collision energies of 0.6 and 3.1 eV, respectively. All ion reactant states selected by the PFI-PESICO scheme are in the N+=1 rotational level. The experimental cross sections are complemented with quasiclassical trajectory (QCT) calculations performed on the ab initio potential energy surface provided by Palmieri et al. [Mol. Phys. 98, 1839 (2000)]. The QCT cross sections are significantly lower than the experimental results near threshold, consistent with important contributions due to resonances observed in quantum scattering studies. At total energies above 2 eV, the QCT calculations are in excellent agreement with the present results. PFI-PESICO time-of-flight (TOF) measurements are also reported for υ+=3 and 4 at a collision energy of 0.6 eV. The velocity inverted TOF spectra are consistent with the prevalence of a spectator-stripping mechanism. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTON transfer reactions KW - CHARGE transfer KW - CHEMICAL reactions KW - AUGER effect KW - IONS KW - QUANTUM chemistry N1 - Accession Number: 17227116; Tang, X. N. 1 Xu, H. 1 Zhang, T. 1 Hou, Y. 1 Chang, C. 1 Ng, C. Y. 1; Email Address: cyng@chem.ucdavis.edu Chiu, Y. 2 Dressler, R. A. 2; Email Address: rainer.dressler@hanscom.af.mil Levandier, D. J. 3; Affiliation: 1: Department of Chemistry, University of California at Davis, Davis, California 95616. 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts 01731-3010. 3: Boston College, Institute for Scientific Research, Newton, Massachusetts 02159.; Source Info: 4/22/2005, Vol. 122 Issue 16, p164301; Subject Term: PROTON transfer reactions; Subject Term: CHARGE transfer; Subject Term: CHEMICAL reactions; Subject Term: AUGER effect; Subject Term: IONS; Subject Term: QUANTUM chemistry; Number of Pages: 11p; Illustrations: 3 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.1883169 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17227116&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Markowicz, P. P. AU - Tiryaki, H. AU - Prasad, P. N. AU - Tondiglia, V. P. AU - Natarajan, L. V. AU - Bunning, T. J. AU - Haus, J. W. T1 - Electrically switchable third-harmonic generation in photonic crystals. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2005/04/15/ VL - 97 IS - 8 M3 - Article SP - 083512 PB - American Institute of Physics SN - 00218979 AB - We demonstrate electrically switchable third-harmonic generation in low refractive index contrast one-dimensional photonic crystals pumped by a near-infrared laser beam. A dramatic enhancement of the third-harmonic signal is observed on the short wavelength side of the photonic crystal stop band. The enhancement of the third-harmonic generation disappears when an electric field is applied, revealing the electrical switchability of the third-harmonic generation. The observed phenomenon of enhancement is explained theoretically with a coupled-mode model. We also show that up to a modulation frequency of 10 kHz the switching properties are supported in the photonic crystal. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALS KW - CRYSTALLOGRAPHY KW - PHOTONICS KW - OPTICS KW - LASER beams N1 - Accession Number: 16868329; Markowicz, P. P. 1; Email Address: ppm@acsu.buffalo.edu Tiryaki, H. 1 Prasad, P. N. 1 Tondiglia, V. P. 2 Natarajan, L. V. 2 Bunning, T. J. 2 Haus, J. W. 3; Affiliation: 1: Departments of Chemistry and Physics, The Institute for Lasers, Photonics and Biophotonics, University of Buffalo, The State University of New York, Buffalo, New York 14260-3000 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, Dayton, Ohio 45433 3: Electro-Optics Program, University of Dayton, Dayton, Ohio 45469-0245; Source Info: 4/15/2005, Vol. 97 Issue 8, p083512; Subject Term: CRYSTALS; Subject Term: CRYSTALLOGRAPHY; Subject Term: PHOTONICS; Subject Term: OPTICS; Subject Term: LASER beams; Number of Pages: 4p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.1868081 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16868329&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wiemeri, J. C. AU - Spencer, T. A. AU - Banerjee, S. K. T1 - Magnetic-field effects on Coulomb blockade conductance oscillations in a normal metal-insulator-normal metal double-barrier tunnel junction formed using atomic force microscope nanolithography. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2005/04/15/ VL - 97 IS - 8 M3 - Article SP - 084319 PB - American Institute of Physics SN - 00218979 AB - We report on magnetic-field effects on Coulomb blockade conductance features in a Ti/TiO2/Ti-cluster/TiO2/Ti double tunnel junction device formed using atomic force microscope nanolithography. Conductance oscillations are observed at 1.8, 10, and 50 K and are attributed to Coulomb blockade effects. Applying a 9-T magnetic field enhanced the conductance oscillations and clarified the Coulomb staircase in I–V curves through suppression of inelastic quantum cotunneling through both barriers. A zero-bias conductance anomaly peak is observed at 1.8 K in multiple devices and is attributed to contaminant particles creating localized magnetic moments in the tunnel junction. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC fields KW - ATOMIC force microscopy KW - LITHOGRAPHY KW - OSCILLATIONS KW - FIELD theory (Physics) KW - FLUCTUATIONS (Physics) N1 - Accession Number: 16868238; Wiemeri, J. C. 1; Email Address: jeffrey.wiemeri@kirtland.af.mil Spencer, T. A. 1 Banerjee, S. K. 2; Affiliation: 1: High Power Microwave Division, Directed Energy Directorate, Air Force Research Laboratory, 3550 Aberdeen Avenue Southeast, Kirtland Air Force Base, New Mexico 87117 2: Microelectronics Research Center, University of Texas at Austin, J. J. Pickle Research Center, 10100 Burnet Road, Bldg. 160, Mail Code R9900, Austin, Texas 78758; Source Info: 4/15/2005, Vol. 97 Issue 8, p084319; Subject Term: MAGNETIC fields; Subject Term: ATOMIC force microscopy; Subject Term: LITHOGRAPHY; Subject Term: OSCILLATIONS; Subject Term: FIELD theory (Physics); Subject Term: FLUCTUATIONS (Physics); NAICS/Industry Codes: 323119 Other printing; Number of Pages: 7p; Illustrations: 3 Black and White Photographs, 2 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.1879077 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16868238&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Knopp, J. S. AU - Aldrin, J. C. T1 - Numerical Studies of Eddy Current NDE for Small Crack Detection around Fasteners in Multi-Layer Structures. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2005/04/09/ VL - 760 IS - 1 M3 - Article SP - 417 EP - 424 PB - American Institute of Physics SN - 0094243X AB - A series of numerical studies using validated models are presented investigating the influence of probe design and geometric flaw parameters on the eddy current measurement response for the inspection of cracks around fastener holes in multi-layer structures. Multiple quantitative features of the eddy current data were evaluated. The goal of this study is to demonstrate the influence of these design parameters on the ability to resolve the flaw characteristics in the measurement data. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALLOGRAPHY KW - PHYSICAL sciences KW - PHYSICS KW - ULTRASONICS KW - EUCLID'S elements KW - SOLIDS N1 - Accession Number: 16933176; Knopp, J. S. 1 Aldrin, J. C. 2; Affiliation: 1: Air Force Research Laboratory (AFRL/MLLP), Wright-Patterson AFB, OH 45433, USA. 2: Computational Tools, Gurnee, IL 60031, USA.; Source Info: 2005, Vol. 760 Issue 1, p417; Subject Term: CRYSTALLOGRAPHY; Subject Term: PHYSICAL sciences; Subject Term: PHYSICS; Subject Term: ULTRASONICS; Subject Term: EUCLID'S elements; Subject Term: SOLIDS; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.1916706 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16933176&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Medina, Enrique A. AU - Altynova, Marina AU - Knopp, Jeremy AU - Kropas-Hughes, Claudia V. T1 - Strategy and Software Framework for Integration of QNDE and Product Life Management Design. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2005/04/09/ VL - 760 IS - 1 M3 - Article SP - 1682 EP - 1689 PB - American Institute of Physics SN - 0094243X AB - A strategy and software framework is presented for integrating various NDI design and product life management tools into a design platform enabling analysis and optimization of tradeoffs among NDI decisions and product life cycle outcomes such as reliability and cost. The approach addresses flexible model design through object-oriented building blocks, the capability to study complex maintenance processes, the potential integration of independent modeling tools, and NDE system design and optimization based on component life management (CLM) metrics. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER software industry KW - PRODUCT life cycle KW - SYSTEM analysis KW - PRODUCT obsolescence KW - SYSTEMS design KW - PHYSICS N1 - Accession Number: 16933010; Aldrin, John C. 1 Medina, Enrique A. 2 Altynova, Marina 2 Knopp, Jeremy 3 Kropas-Hughes, Claudia V. 3; Affiliation: 1: Computational Tools, Gurnee, IL 60031. 2: Austral Engineering and Software, Inc., Dayton, OH 45430. 3: Air Force Research Laboratory (AFRL/MLLP), Wright-Patterson AFB, OH 45433.; Source Info: 2005, Vol. 760 Issue 1, p1682; Subject Term: COMPUTER software industry; Subject Term: PRODUCT life cycle; Subject Term: SYSTEM analysis; Subject Term: PRODUCT obsolescence; Subject Term: SYSTEMS design; Subject Term: PHYSICS; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 511210 Software Publishers; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.1916873 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16933010&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kervin, P.W. AU - Africano, J.L. AU - Sydney, P.F. AU - Hall, D. T1 - Small satellite characterization technologies applied to orbital debris JO - Advances in Space Research JF - Advances in Space Research Y1 - 2005/04// VL - 35 IS - 7 M3 - Article SP - 1214 EP - 1225 SN - 02731177 AB - Abstract: There are challenges associated with optical observations of Earth-orbiting objects that are at, or near, the limit of detection using terrestrial space surveillance sensors. These challenges include observing small objects not just for statistical purposes, but also with enough frequency and accuracy to move them into satellite catalogs, to provide the capability to routinely observe and characterize smaller objects, and to develop the capability to observe the satellite positions with increased accuracy. Until recently, ground-based observers could easily have mistaken such small objects as debris. Given the current pace of small satellite development, it may not be much longer before operational spacecraft of even smaller size are launched. AMOS is currently developing techniques to observe and characterize these small spacecraft, and applying those techniques to orbital debris. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSPACECRAFT KW - SPACE vehicles KW - DETECTORS KW - ENGINEERING instruments KW - Characterization KW - Metrics KW - Orbital debris KW - Small satellite KW - Spacecraft N1 - Accession Number: 18156795; Kervin, P.W. 1; Email Address: paul.kervin@maui.afmc.af.mil Africano, J.L. 2 Sydney, P.F. 2 Hall, D. 2; Affiliation: 1: Air Force Research Laboratory (DEBI), AMOS Detachment, 535 Lipoa Parkway, Suite 200, Kihei, HI 96753, USA 2: The Boeing Company, 535 Lipoa Parkway, Suite 200, Kihei, HI 96753, USA; Source Info: 2005, Vol. 35 Issue 7, p1214; Subject Term: MICROSPACECRAFT; Subject Term: SPACE vehicles; Subject Term: DETECTORS; Subject Term: ENGINEERING instruments; Author-Supplied Keyword: Characterization; Author-Supplied Keyword: Metrics; Author-Supplied Keyword: Orbital debris; Author-Supplied Keyword: Small satellite; Author-Supplied Keyword: Spacecraft; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.asr.2004.11.038 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18156795&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adelgren, Russell G. AU - Elliott, Gregory S. AU - Crawford, Jason B. AU - Carter, Campbell D. AU - Donbar, Jeffrey M. AU - Grosjean, Dennis F. T1 - Axisymmetric Jet Shear-Layer Excitation by Laser Energy and Electric Arc Discharges. JO - AIAA Journal JF - AIAA Journal Y1 - 2005/04// VL - 43 IS - 4 M3 - Article SP - 776 EP - 791 SN - 00011452 AB - Two energy deposition methods (electric arcing and laser-induced optical breakdown) were used to force and control compressible mixing layers of axisymmetric jets. The effects of energy-deposition forcing methods have been experimentally investigated with schlieren imaging, particle image velocimetry, product formation flow visualizations, and high-frequency pressure measurements. Large-scale structures were forced in perfectly expanded jets with nozzle-exit Mach numbers of 1.38, 1.5, and 2.0, utilizing single pulse-laser energy deposition focused at the nozzle exit. Structures were successfully forced over a range of convective Mach numbers from 0.63 to 0.85 using laser pulse energies from 5 to 40 mJ. The large-scale structure forced by laser perturbation in the Mach 1.38 jet was characterized with detailed measurements of the velocity and vorticity fields and the fluctuating pressure history. The measured convective velocity of the forced structure was approximately 25% above isentropic theory, and the structures had a growth rate. 2.1 times the undisturbed shear layer. Also, multiple-pulse electric arc discharges were induced locally at the nozzle exit and investigated with schlieren imaging. Electric arc frequencies ranging from 1 to 18 kHz for the Mach 1.38 jet were investigated with Strouhal numbers from 0.32 to 0.56 having the greatest effect. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JET planes KW - AIRPLANES KW - AERONAUTICS KW - AERODYNAMICS KW - ASTRONAUTICS N1 - Accession Number: 16760939; Adelgren, Russell G. 1 Elliott, Gregory S. 2 Crawford, Jason B. 3 Carter, Campbell D. 4 Donbar, Jeffrey M. 4 Grosjean, Dennis F. 5; Affiliation: 1: Rutgers—The State University of New Jersey, Piscataway, New Jersey 08854 2: University of Illinois at Urbana-Champaign, Urbana, IL 61801 3: Knolls Atomic Power Laboratory, Niskayuna, NY 12309 4: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 5: Innovative Scientific Solutions, Inc., Dayton, Ohio 45440; Source Info: Apr2005, Vol. 43 Issue 4, p776; Subject Term: JET planes; Subject Term: AIRPLANES; Subject Term: AERONAUTICS; Subject Term: AERODYNAMICS; Subject Term: ASTRONAUTICS; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 16p; Illustrations: 10 Diagrams, 2 Charts, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16760939&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Filatyev, Sergei A. AU - Driscoll, James F. AU - Carter, Campbell D. AU - Donbar, Jeffrey M. T1 - Measured properties of turbulent premixed flames for model assessment, including burning velocities, stretch rates, and surface densities JO - Combustion & Flame JF - Combustion & Flame Y1 - 2005/04// VL - 141 IS - 1/2 M3 - Article SP - 1 EP - 21 SN - 00102180 AB - Abstract: Several previously unreported properties of turbulent premixed flames were measured because they are especially useful for the future assessment of direct numerical simulations and models. These new properties include local stretch rates, a wrinkling parameter, the degree of flamelet extinction, and the reaction layer thickness, which were quantified using simultaneous CH planar laser-induced fluorescence/particle image velocimetry (CH PLIF-PIV) diagnostics. Other reported properties that are useful for model assessment are flame surface density and global consumption speed, which is one type of turbulent burning velocity. Also measured was the Meneveau–Poinsot stretch efficiency function , which plays a central role in the coherent flamelet model. Some images of the flame–eddy interactions show how eddies exert strain and how flamelets “merge.” A highly wrinkled (corrugated) flame with well-defined boundary conditions was stabilized on a large two-dimensional slot Bunsen burner. It was found that the turbulent burning velocity of Bunsen flames depends on the mean velocity , which was varied independently of turbulence intensity. It is concluded that conventional relations for the turbulent burning velocity of Bunsen flames are inadequate because they should include two additional parameters: mean velocity and burner width W. These parameters affect the residence times of the flame–eddy interactions. A scaling analysis is presented to explain the observed trends. It indicates that if the burner width is sufficiently large, the long flame will experience significant flamelet merging, which is one factor leading to the “bending” (nonlinear behavior) of the burning velocity curve. Images of CH layers show that flame surface area is lost by flamelet merging, but is not lost due to local extinction, as no extinction was observed. The stretch efficiency function increases with increasing integral scale, indicating that large eddies are more efficient in exerting flame stretch than small eddies. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPEED KW - TURBULENCE KW - LASERS KW - FLUID dynamic measurements KW - Burning velocity KW - Premixed turbulent flames KW - Stretch N1 - Accession Number: 16836963; Filatyev, Sergei A. 1 Driscoll, James F. 1; Email Address: jamesfd@umich.edu Carter, Campbell D. 2 Donbar, Jeffrey M. 2; Affiliation: 1: Department of Aerospace Engineering, University of Michigan, Ann Arbor, MI 48109, USA 2: Air Force Research Laboratory AFRL/PRAS, Wright–Patterson AFB, OH 45433, USA; Source Info: Apr2005, Vol. 141 Issue 1/2, p1; Subject Term: SPEED; Subject Term: TURBULENCE; Subject Term: LASERS; Subject Term: FLUID dynamic measurements; Author-Supplied Keyword: Burning velocity; Author-Supplied Keyword: Premixed turbulent flames; Author-Supplied Keyword: Stretch; Number of Pages: 21p; Document Type: Article L3 - 10.1016/j.combustflame.2004.07.010 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16836963&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Byrd, Larry W. AU - Birman, Victor T1 - The estimate of the effect of z-pins on the strain release rate, fracture and fatigue in a composite co-cured z-pinned double cantilever beam JO - Composite Structures JF - Composite Structures Y1 - 2005/04// VL - 68 IS - 1 M3 - Article SP - 53 EP - 63 SN - 02638223 AB - The paper illustrates the effect of z-pins on the strain energy release rate in composite co-cured double cantilever beams (DCB) subject to a standard fracture toughness test. The conclusions obtained as a result of the solution illustrate that z-pins can provide drastic enhancement in fatigue and fracture properties of a co-cured z-pinned composite joint, even if their volume fraction is low. The strain energy release rate for loading and geometry combinations that do not result in immediate fracture was significantly reduced as a result of using z-pins. This slows the rate of the crack propagation if it is governed by the Paris law. Moreover, z-pins can completely arrest the crack. Although the analysis was performed for DCB specimens, the conclusions can be extrapolated to a general case of co-cured z-pinned joints. [Copyright &y& Elsevier] AB - Copyright of Composite Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPOSITE materials KW - EUCLID'S elements KW - MATERIALS KW - CARBON composites KW - Crack KW - Double-cantilever beam KW - Fatigue KW - Fracture KW - Z-pinned joint N1 - Accession Number: 15838085; Byrd, Larry W. 1 Birman, Victor 2; Email Address: vbirman@umr.edu; Affiliation: 1: Air Force Research Laboratory, AFRL/VASM, Building 65, 2700 D Street, Wright-Patterson Air Force Base, OH 45433-7402, USA 2: University of Missouri-Rolla, Engineering Education Center, 8001 Natural Bridge Road, St. Louis, MO 63121-4499, USA; Source Info: Apr2005, Vol. 68 Issue 1, p53; Subject Term: COMPOSITE materials; Subject Term: EUCLID'S elements; Subject Term: MATERIALS; Subject Term: CARBON composites; Author-Supplied Keyword: Crack; Author-Supplied Keyword: Double-cantilever beam; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Fracture; Author-Supplied Keyword: Z-pinned joint; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.compstruct.2004.02.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15838085&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Voevodin, A.A. AU - Zabinski, J.S. T1 - Nanocomposite and nanostructured tribological materials for space applications JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2005/04// VL - 65 IS - 5 M3 - Article SP - 741 EP - 748 SN - 02663538 AB - Abstract: Satellites and space-born systems have a number of moveable mechanical parts, whose reliability is severely limited by degradation of lubricants and excessive wear. Many systems may remain in space for 10–30 years and, therefore, exposed to atomic oxygen, solar radiation, energetic particles, and temperature cycling from cryogenic to 400 °C. Furthermore, these systems are frequently tested on the ground and stored for many years under controlled environments before launching. Also, reusable launch vehicles are so planned that they will operate with space–terrestrial cycling and with temperature spikes in excess of 800 °C during re-entry. A “chameleon” tribological coating concept was developed to address this challenge. This approach relies on the coating to change its surface (both chemistry and structure) to self-adjust to the environment and thus achieve long durability. The first “chameleon” coatings were made of WC, WS2, and diamond-like carbon (DLC); they provided superior mechanical toughness and performance in space/terrestrial environmental cycling. In order to address the temperature variation, the second generation of “chameleon” coatings were made of yttria stabilized zirconia (YSZ) in a gold matrix with encapsulated nanosized reservoirs of MoS2 and DLC. Encapsulation of MoS2 nanoparticles into Al2O3 matrix and high temperature lubrication with low melting point glassy ceramic phases were also explored. “Chameleon” coatings with various chemistries are discussed along with their characterization by various analytical, mechanical, and tribological methods. Coating toughness was remarkably enhanced by a grain boundary sliding mechanism. Unique friction and wear performance was demonstrated by testing in controlled humidity air, dry nitrogen, vacuum, 500–600 °C air, and in environmental cycling. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - NANOSTRUCTURES KW - SOLAR radiation KW - COATING processes N1 - Accession Number: 16134992; Voevodin, A.A.; Email Address: andrey.voevodin@afrl.af.mil Zabinski, J.S. 1; Affiliation: 1: MLBT, Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright–Patterson Air Force Base, OH 45433-7750, USA; Source Info: Apr2005, Vol. 65 Issue 5, p741; Subject Term: NANOPARTICLES; Subject Term: NANOSTRUCTURES; Subject Term: SOLAR radiation; Subject Term: COATING processes; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.compscitech.2004.10.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16134992&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Uchida, Tetsuya AU - Dang, Thuy AU - Min, B.G. AU - Zhang, Xiefei AU - Kumar, Satish T1 - Processing, structure, and properties of carbon nano fiber filled PBZT composite fiber JO - Composites: Part B, Engineering JF - Composites: Part B, Engineering Y1 - 2005/04// VL - 36 IS - 3 M3 - Article SP - 183 EP - 187 SN - 13598368 AB - Abstract: The poly(p-phenylene benzobisthiazole) (PBZT)/carbon nano fiber (CNF) composite was prepared by in situ polymerization in polyphosphoric acid (PPA), and fibers spun by dry-jet wet spinning. The liquid crystalline PBZT/CNF dope in PPA exhibited excellent spinnability. The PBZT/CNF weight ratio was 90/10. The transmission electron microscope images show isolated and well oriented CNFs with no aggregation. CNF graphite layer stacking in the composite fiber have been observed using high resolution transmission electron microscopy, and showed that graphitic structure of CNFs was not damaged during polymerization in PPA and subsequent fiber spinning and drawing. High resolution transmission electron microscopy also shows that there is no debonding between CNF and the PBZT matrix. Tensile and compressive properties of the composite fibers have been determined and discussed. [Copyright &y& Elsevier] AB - Copyright of Composites: Part B, Engineering is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON microscopes KW - POLYMERIZATION KW - CHEMICAL reactions KW - SURFACE chemistry KW - Carbon nano fiber N1 - Accession Number: 17329504; Uchida, Tetsuya 1 Dang, Thuy 2 Min, B.G. 3 Zhang, Xiefei 4 Kumar, Satish 4; Email Address: satish.kumar@ptfe.gatech.edu; Affiliation: 1: Faculty of Engineering, Okayama University, Okayama 700-8530, Japan 2: Polymer Branch, Air Force Research Laboratory, WPAFB OH 45433, USA 3: School of Advanced Materials and System Engineering, Kumoh Institute of Technology, Kumi 730-731, South Korea 4: School of Polymer, Textile and Fiber Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0295, USA; Source Info: Apr2005, Vol. 36 Issue 3, p183; Subject Term: ELECTRON microscopes; Subject Term: POLYMERIZATION; Subject Term: CHEMICAL reactions; Subject Term: SURFACE chemistry; Author-Supplied Keyword: Carbon nano fiber; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.compositesb.2004.04.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17329504&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, K. AU - Gao, X.-L. AU - Roy, A.K. T1 - Micromechanical modeling of three-dimensional open-cell foams using the matrix method for spatial frames JO - Composites: Part B, Engineering JF - Composites: Part B, Engineering Y1 - 2005/04// VL - 36 IS - 3 M3 - Article SP - 249 EP - 262 SN - 13598368 AB - Abstract: A micromechanics model for three-dimensional (3D) open-cell foams is developed by using the matrix method for spatial frames and tetrakaidecahedral unit cells. The effective elastic properties of foams are determined utilizing unit cells subjected to loadings of three different modes. The newly obtained member stiffness submatrices for a 3D frame member undergoing simultaneous axial, transverse shearing, flexural and torsional deformations and having a circular or non-circular cross-section are employed. The use of these stiffness submatrices enables the incorporation of all four deformation mechanisms (i.e., stretching, shearing, bending and twisting) possible under the specified loadings and the treatment of four different strut cross-section shapes (i.e., circle, square, equilateral triangle and Plateau border) in a unified manner. The formulas for determining the effective Young''s moduli, Poisson''s ratios and shear moduli of open-cell foams are derived using the composite homogenization theory. The new formulas, in which the cell displacements are obtained employing the matrix method, include all necessary microstructural and material parameters, unlike those provided by existing models. It is shown that the foam elastic properties depend on the relative foam density, the shape and size of the strut cross-section, and the Young''s modulus and Poisson''s ratio of the strut material. By applying the new model, a parametric study of sample cases involving the three loading modes and the four strut cross-section shapes is conducted for carbon foams, whose modeling motivated this work. The predicted values of the effective properties agree favorably with those based on existing models and experimental data for the Mode I loading case, which is the only case that has been well studied. For the Mode II and Mode III loading cases, the formulas and the subsequent sample results are presented in a systematic manner for the first time. Comparisons of the predicted effective elastic properties for the three loading cases quantitatively show that carbon foams exhibit certain degrees of anisotropy. [Copyright &y& Elsevier] AB - Copyright of Composites: Part B, Engineering is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROMECHANICS KW - SOLID state physics KW - COMPOSITE materials KW - MATRICES KW - A. Foams KW - B. Microstructure KW - Elastic properties N1 - Accession Number: 17329510; Li, K. 1 Gao, X.-L. 2; Email Address: xlgao@tamu.edu Roy, A.K. 3; Affiliation: 1: Department of Mechanical Engineering—Engineering Mechanics, Michigan Technological University, Houghton, MI 49931-1295, USA 2: Department of Mechanical Engineering, Texas A&M University, 3123 TAMU, College Station, TX 77843-3123, USA 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, AFRL/MLBC, Wright-Patterson Air Force Base, OH 45433-7750, USA; Source Info: Apr2005, Vol. 36 Issue 3, p249; Subject Term: MICROMECHANICS; Subject Term: SOLID state physics; Subject Term: COMPOSITE materials; Subject Term: MATRICES; Author-Supplied Keyword: A. Foams; Author-Supplied Keyword: B. Microstructure; Author-Supplied Keyword: Elastic properties; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.compositesb.2004.09.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17329510&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gordon, Steven J. AU - Dorn, Ronald I. T1 - In situ weathering rind erosion JO - Geomorphology JF - Geomorphology Y1 - 2005/04// VL - 67 IS - 1/2 M3 - Article SP - 97 EP - 113 SN - 0169555X AB - Abstract: The use of cosmogenic nuclide dating methods place in doubt the long-term future of weathering rinds (WRs) as a chronometric tool. Why estimate ages when radiometric control is possible? This paper presents evidence that WRs can provide invaluable clues about what particular sample would provide the most accurate cosmogenic age by avoiding “inheritance” of cosmogenic nuclides and by avoiding boulders undergoing spalling. The key to this new use requires testing the occurrence and nature of WR erosion. Back-scattered electron microscopy reveals that ignimbrite, andesite, basalt, and granitic clasts experience WR erosion in all subsurface and surface contexts thus far studied in Arizona, California, Hawaii, Oregon, and Washington. To understand the magnitude of WR erosion, we measured WR thicknesses, all while controlling the cosmogenic and surface stability ages of clasts by chlorine-36 and rock varnish microlamination dating methods. Our data reveal that traditional methodologies of sampling cobbles remove two-thirds of the true thickness of weathering rinds, calling into question many beliefs including the notion that clay minerals are not produced during weathering-rind formation. Comparisons of optical and electron microscope measurements support concerns that measurement of WRs by color changes, while useful as a pedagogical tool, creates serious biases in underestimating the true dynamics of WRs. In the end, we found that concordance of WR and rock coating “age trends” indicates the ideal boulder for cosmogenic nuclide dating. Offsets reveal either ongoing boulder erosion, invalidating “zero erosion” model ages, or a potential problem with “inheritance” of cosmogenic nuclides. [Copyright &y& Elsevier] AB - Copyright of Geomorphology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EROSION KW - WEATHERING KW - ELECTRON microscopes KW - NEVADA KW - Geomorphology KW - Glacial KW - Organ Pipe KW - Quaternary KW - Sierra Nevada KW - Weathering N1 - Accession Number: 17637482; Gordon, Steven J. 1; Email Address: steve.gordon@usafa.af.mil Dorn, Ronald I. 2; Email Address: ronald.dorn@asu.edu; Affiliation: 1: Department of Economics and Geography, United States Air Force Academy, 2354 Fairchild Drive, Colorado Springs, CO 80840-6299, USA 2: Department of Geography, Box 870104, Arizona State University, Tempe, AZ 85287-0104, USA; Source Info: Apr2005, Vol. 67 Issue 1/2, p97; Subject Term: EROSION; Subject Term: WEATHERING; Subject Term: ELECTRON microscopes; Subject Term: NEVADA; Author-Supplied Keyword: Geomorphology; Author-Supplied Keyword: Glacial; Author-Supplied Keyword: Organ Pipe; Author-Supplied Keyword: Quaternary; Author-Supplied Keyword: Sierra Nevada; Author-Supplied Keyword: Weathering; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.geomorph.2004.06.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17637482&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Griffiths, H. D. AU - Wicks, M. C. AU - Weiner, D. AU - Adve, R. AU - Antonik, P. A. AU - Fotinopoulos, I. T1 - Denial of bistatic hosting by spatial-temporal waveform design. JO - IEE Proceedings -- Radar, Sonar & Navigation JF - IEE Proceedings -- Radar, Sonar & Navigation Y1 - 2005/04// VL - 152 IS - 2 M3 - Article SP - 81 EP - 88 PB - Institution of Engineering & Technology SN - 13502395 AB - A set of theoretical techniques to prevent a radar from being used by a bistatic radar receiver as a non-cooperative illuminator are analysed. This works by radiating in addition to the radar signal waveform, a `masking signal' waveform which is orthogonal to the radar signal waveform, both in the coding domain and the spatial domain. A number of different coding schemes are analysed. Two spatial coding methods are presented and analysed: the first uses a pair of interferometer elements at the extremities of the radar antenna array; the second uses a Butler matrix to generate a set of orthogonal beams. System-level calculations are presented to show the level of masking of the radar signal received by a bistatic radar receiver, and the suppression of the masking signal in the host radar echo. Some ideas for further work are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of IEE Proceedings -- Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR KW - DETECTORS KW - ELECTRONIC systems KW - RADAR -- Antennas KW - RADIO (Medium) KW - OPTICAL instruments N1 - Accession Number: 16783773; Griffiths, H. D. 1; Email Address: h.griffiths@ee.ucl.ac.uk Wicks, M. C. 2 Weiner, D. 2 Adve, R. 3 Antonik, P. A. 2 Fotinopoulos, I. 4; Affiliation: 1: University College London, Department of Electronic and Electrical Engineering, Torrington Place, London WC1E 7JE, UK. 2: Sensors Directorate, Air Force Research Laboratory, 26 Electronic Parkway, Rome, NY 13441- 4514, USA. 3: University of Toronto, Dept. of Electric and Communication Engineering, Communications Group, Rm. GB 434, 35 St. George St., Toronto, Ontario M55 3G4, Canada. 4: Imperial College of Science, Technology and Medicine, Department of Electrical and Electronic Engineering, Exhibition Road, London 5W7 2BT, UK.; Source Info: Apr2005, Vol. 152 Issue 2, p81; Subject Term: RADAR; Subject Term: DETECTORS; Subject Term: ELECTRONIC systems; Subject Term: RADAR -- Antennas; Subject Term: RADIO (Medium); Subject Term: OPTICAL instruments; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 446130 Optical Goods Stores; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 515111 Radio Networks; Number of Pages: 8p; Document Type: Article L3 - 10.1049/ip-rsn:20041236 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16783773&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Chornoboy, Edward S. AU - Rangaswamy, Muralidhar AU - Lachapelle, Gérard T1 - From the Editors. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2005/04// VL - 41 IS - 2 M3 - Editorial SP - 385 EP - 385 SN - 00189251 AB - This article presents information about the recently appointed editorial staff of the journal "IEEE Transactions on Aerospace and Electronic Systems." Edward S. Chornoboy is Radar Systems Editor-in-Chief. He received the B.E. degree from Stevens Institute of Technology in 1977 and M.Sc. and Ph.D. degrees from the Johns Hopkins University in 1985 and 1987, respectively. From 1987 to 1988 he was with the Electronic Systems and Signals Research Laboratory at Washington University, Saint Louis, Missouri. From 1988 to present he has been a staff member at MIT Lincoln Laboratory and currently works there within the Air Defense Techniques Group, Air and Missile Defense Technology Division. Muralidhar Rangaswamy, Radar Systems Associate Editor. Rangaswamy received the Ph.D. degree in electrical engineering from Syracuse University, Syracuse in 1992. KW - EDITORS KW - JOURNALISTS KW - SAINT Louis (Mo.) KW - MISSOURI KW - WASHINGTON University (Saint Louis, Mo.) KW - CHORNOBOY, Edward S. KW - RANGASWAMY, Muralidhar N1 - Accession Number: 17521824; Chornoboy, Edward S. Rangaswamy, Muralidhar 1 Lachapelle, Gérard; Affiliation: 1: Senior electronics engineer, Air Force Research Laboratory (AFRL), Hanscom AFB, MA.; Source Info: Apr2005, Vol. 41 Issue 2, p385; Subject Term: EDITORS; Subject Term: JOURNALISTS; Subject Term: SAINT Louis (Mo.); Subject Term: MISSOURI; Company/Entity: WASHINGTON University (Saint Louis, Mo.); NAICS/Industry Codes: 711510 Independent Artists, Writers, and Performers; NAICS/Industry Codes: 711512 Independent actors, comedians and performers; NAICS/Industry Codes: 711513 Independent writers and authors; People: CHORNOBOY, Edward S.; People: RANGASWAMY, Muralidhar; Number of Pages: 1p; Document Type: Editorial UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17521824&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yaghjian, Arthur D. AU - Best, Steven R. T1 - Impedance, Bandwidth, and Q of Antennas. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2005/04// VL - 53 IS - 4 M3 - Article SP - 1298 EP - 1324 SN - 0018926X AB - To address the need for fundamental universally valid definitions of exact bandwidth and quality factor (Q) of tuned antennas, as well as the need for efficient accurate approximate formulas for computing this bandwidth and Q, exact and approximate expressions are found for the bandwidth and Q of a general single-feed (one-port) lossy or lossless linear antenna tuned to resonance or antiresonance. The approximate expression derived for the exact bandwidth of a tuned antenna differs from previous approximate expressions in that it is inversely proportional to the magnitude |Z'0 (&omega0) | of the frequency derivative of the input impedance and, for not too large a bandwidth, it is nearly equal to the exact bandwidth of the tuned antenna at every frequency &omega0, that is, throughout anti-resonant as well as resonant frequency bands. It is also shown that an appropriately defined exact Q of a tuned lossy or lossless antenna is approximately proportional to |Z'0 (&omega0) | and thus this Q is approximately inversely proportional to the bandwidth (for not too large a bandwidth) of a simply tuned antenna at all frequencies. The exact Q of a tuned antenna is defined in terms of average internal energies that emerge naturally from Maxwell's equations applied to the tuned antenna. These internal energies, which are similar but not identical to previously defined quality-factor energies, and the associated Q are proven to increase without bound as the size of an antenna is decreased. Numerical solutions to thin straight-wire and wire-loop lossy and lossless antennas, as well as to a Yagi antenna and a straight-wire antenna embedded in a lossy dispersive dielectric, confirm the accuracy of the approximate expressions and the inverse relationship between the defined bandwidth and the defined Q over frequency ranges that cover several resonant and antiresonant frequency bands. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DATA transmission systems KW - DIGITAL communications KW - BROADBAND communication systems KW - ANTENNAS (Electronics) KW - ELECTRONIC apparatus & appliances KW - ELECTRONICS N1 - Accession Number: 16753570; Yaghjian, Arthur D. 1; Email Address: arthur.yaghjian@hanscom.af.mil Best, Steven R. 1; Affiliation: 1: Air Force Research Laboratory, Hanscom AFB, MA 01731 USA.; Source Info: Apr2005, Vol. 53 Issue 4, p1298; Subject Term: DATA transmission systems; Subject Term: DIGITAL communications; Subject Term: BROADBAND communication systems; Subject Term: ANTENNAS (Electronics); Subject Term: ELECTRONIC apparatus & appliances; Subject Term: ELECTRONICS; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 27p; Document Type: Article L3 - 10.1109/TAP.2005.844443 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16753570&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kasten, Donald G. AU - Liu, Xin AU - Sebo, Stephen A. AU - Grosjean, Dennis F. AU - Schweickart, Daniel L. T1 - Partial Discharge Measurements in Air and Argon at Low Pressures with and without a Dielectric Barrier. JO - IEEE Transactions on Dielectrics & Electrical Insulation JF - IEEE Transactions on Dielectrics & Electrical Insulation Y1 - 2005/04// VL - 12 IS - 2 M3 - Article SP - 362 EP - 373 SN - 10709878 AB - Partial-discharge (PD) characteristics in air and argon under low pressures down to 133 Pa (0.1 Ton) and 60 Hz ac energization are studied in an energized needle-plane electrode arrangement. The electrode configuration, vacuum chamber, facilities, and electrical connections for the experimental setup are described. Two cases are studied for each of two gases, air and argon, with 20 mm spacing between the two electrodes: (1) with and (2) without a Teflon® cap (dielectric barrier). Results for the four series of experiments and analysis of the discharge current pulse waveforms are presented. Topics discussed are the typical waveforms of the discharge current pulses at different pressures, and discharge current pulse rise time vs. pressure relationships. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Dielectrics & Electrical Insulation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC discharges KW - AIR KW - ARGON KW - DIELECTRICS KW - EXCITON theory KW - ELECTRODES KW - experimental setup KW - inception voltage KW - partial discharge current pulse waveform KW - Partial discharges KW - rise time. N1 - Accession Number: 16897252; Kasten, Donald G. 1 Liu, Xin 1 Sebo, Stephen A. 1 Grosjean, Dennis F. 2 Schweickart, Daniel L. 3; Affiliation: 1: Department of Electrical and Computer Engineering, Ohio State University, Columbus, OH 43210, U.S.A. 2: Innovative Scientific Solutions, Inc. 2766 Indian Ripple Road, Dayton, OH 45440, U.S.A. 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, U.S.A.; Source Info: Apr2005, Vol. 12 Issue 2, p362; Subject Term: ELECTRIC discharges; Subject Term: AIR; Subject Term: ARGON; Subject Term: DIELECTRICS; Subject Term: EXCITON theory; Subject Term: ELECTRODES; Author-Supplied Keyword: experimental setup; Author-Supplied Keyword: inception voltage; Author-Supplied Keyword: partial discharge current pulse waveform; Author-Supplied Keyword: Partial discharges; Author-Supplied Keyword: rise time.; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16897252&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Solin, John R. AU - Tylka, Allan J. AU - Shea, Margaret A. AU - Smart, Don F. T1 - The Cosmic Ray Environment of Tactical ABMs. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2005/04// VL - 52 IS - 2 M3 - Article SP - 546 EP - 552 SN - 00189499 AB - Abstract-The battlespace of tactical antiballistic missiles (TABMs) is mostly exoatmospheric and includes regions with negligible geomagnetic shielding, especially during geomagnetic storms. It is therefore necessary to harden TABMs against galactic cosmic ray (GCR) and solar particle event (SPE) induced single event effects (SEEs) and star tracker and focal plane array (FPA) glitches. The variability of the worldwide GCR and SPE exoatmospheric TARM environment is described. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COSMIC rays KW - ANTIMISSILE missiles KW - ASTROPHYSICAL radiation KW - ANTIAIRCRAFT missiles KW - NUCLEAR physics KW - SPACE environment KW - Atmospheric neutrons KW - avionics single event upset (SEU) KW - SEU KW - single event effect KW - solar particle event N1 - Accession Number: 16843360; Solin, John R. 1; Email Address: john.solin@lmco.com Tylka, Allan J. 2; Email Address: allan.tylka@nrl.navy.mil Shea, Margaret A. 3; Email Address: sssrc@msn.com Smart, Don F. 3; Affiliation: 1: Lockhead Martin Space Systems Co., San Jose, CA 95150-7871 USA. 2: U.S. Naval Research Laboratory, Washington, DC 20375-5352 USA. 3: U.S. Air Force Research Laboratory, Bedford, MA 01731-3010 USA.; Source Info: Apr2005, Vol. 52 Issue 2, p546; Subject Term: COSMIC rays; Subject Term: ANTIMISSILE missiles; Subject Term: ASTROPHYSICAL radiation; Subject Term: ANTIAIRCRAFT missiles; Subject Term: NUCLEAR physics; Subject Term: SPACE environment; Author-Supplied Keyword: Atmospheric neutrons; Author-Supplied Keyword: avionics single event upset (SEU); Author-Supplied Keyword: SEU; Author-Supplied Keyword: single event effect; Author-Supplied Keyword: solar particle event; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TNS.2005.846883 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16843360&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brown, Michael S. AU - Forlines, Robert A. AU - Ganguly, Biswa N. T1 - Streamer Evolution in a Methane-Based Pulsed-dc Discharge. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2005/04//Apr2005 Part 1 of 3 VL - 33 IS - 2 M3 - Article SP - 256 EP - 257 SN - 00933813 AB - Time-resolved spectrally-filtered CH* emission images of streamer development in a pulsed-direct current (dc) discharge in a methane/nitrogen mixture were recorded as a function of delay from breakdown. Single-shot images reveal one or two streamers while images averaged over 100 shots show up to eight. The intensity distribution along the inter-gap axis reflects the rise and fall of the discharge current. The intensity distribution parallel to the electrode surfaces reflects lateral discharge growth. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PULSE circuits KW - PULSED laser deposition KW - DIRECT currents KW - MANURE gases KW - ELECTRODES KW - PLASMA dynamics KW - Emission KW - gas discharges KW - plasma properties. N1 - Accession Number: 17939274; Brown, Michael S. 1; Email Address: michael.brown@wpafb.af.mil Forlines, Robert A. 1 Ganguly, Biswa N. 2; Affiliation: 1: Innovative Scientific Solutions, Inc. (ISSI), Dayton, OH 45440-3638 USA. 2: Propulsion Directorate of the Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7251 USA.; Source Info: Apr2005 Part 1 of 3, Vol. 33 Issue 2, p256; Subject Term: PULSE circuits; Subject Term: PULSED laser deposition; Subject Term: DIRECT currents; Subject Term: MANURE gases; Subject Term: ELECTRODES; Subject Term: PLASMA dynamics; Author-Supplied Keyword: Emission; Author-Supplied Keyword: gas discharges; Author-Supplied Keyword: plasma properties.; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2005.845116 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17939274&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bletzinger, P. AU - Ganguly, B. N. AU - Garscadden, A. T1 - Effect of Shock Wave Propagation on Plasma Emission in a Low Pressure N2 Discharge. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2005/04//Apr2005 Part 1 of 3 VL - 33 IS - 2 M3 - Article SP - 342 EP - 343 SN - 00933813 AB - The interaction between Mach 1.7 acoustic shock waves with 5 torr, 2.5 mA/cm² current density glow discharges in nitrogen was quantified from current-voltage behavior and time resolved two-dimensional C-B plasma emission. These measurements are consistent with the formation of localized electric double layer sheaths traveling with the propagating shock wave. This space-charge layer provides local enhanced ionization at the shock front which permits maintenance of the discharge current continuity, at least during the short shock propagation time, when the decrease in E/N, (E-electric field and N-gas density) behind the shock produces a dark discharge spanning the entire 30-cm column length. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHOCK waves KW - SOUND pressure KW - PLASMA waves KW - ELECTRIC discharges through gases KW - ELECTRIC fields KW - ELECTRIC double layer KW - Glow discharges KW - optical imaging KW - shock waves. N1 - Accession Number: 17939317; Bletzinger, P. 1 Ganguly, B. N. 1; Email Address: Biswa.ganguly@wpatb.af.mil Garscadden, A. 1; Affiliation: 1: Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433-7919 USA.; Source Info: Apr2005 Part 1 of 3, Vol. 33 Issue 2, p342; Subject Term: SHOCK waves; Subject Term: SOUND pressure; Subject Term: PLASMA waves; Subject Term: ELECTRIC discharges through gases; Subject Term: ELECTRIC fields; Subject Term: ELECTRIC double layer; Author-Supplied Keyword: Glow discharges; Author-Supplied Keyword: optical imaging; Author-Supplied Keyword: shock waves.; Number of Pages: 2p; Document Type: Article L3 - 10.1109/TPS.2005.844992 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17939317&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ochoa, A. David AU - Baughn, James W. AU - Byerley, Aaron R. T1 - A new technique for dynamic heat transfer measurements and flow visualization using liquid crystal thermography JO - International Journal of Heat & Fluid Flow JF - International Journal of Heat & Fluid Flow Y1 - 2005/04// VL - 26 IS - 2 M3 - Article SP - 264 EP - 275 SN - 0142727X AB - Abstract: A new technique for dynamic heat transfer coefficient measurements and flow visualization is described. This technique uses a surface with a low thermal mass (a thin tissue) embedded with thermochromic liquid crystals (TLCs) and heated uniformly with infrared radiation. For air heat transfer coefficient measurements, the frequency response is estimated at 0.3–0.5Hz. Depending on the local heat transfer coefficient and the magnitude of its fluctuations, it is estimated that surface temperature fluctuations can be detected to 100Hz. These surface temperature fluctuations are driven by changes in local heat transfer coefficients, caused by dynamic flow behavior such as vortex shedding, and are captured by video recordings of the hue of the liquid crystals. The video images provide time-dependent heat transfer coefficient distribution and time-dependent surface flow visualization. Two applications are used to illustrate this technique: flow on a surface downstream of a protruding cylinder in cross-flow with vortex shedding, and flow downstream of a shallow cylindrical surface dimple. Images of the time-dependent surface temperature distribution downstream of the protruding cylinder are presented. They show the fluctuations in the surface heat transfer coefficient due to vortex shedding. The temperature distributions downstream of the cylindrical dimple were found to be relatively steady within the frequency limits of this technique. Heat transfer coefficient contours are presented for this case. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Fluid Flow is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT transfer KW - NUSSELT number KW - VISUAL perception KW - LIGHT sources N1 - Accession Number: 17411254; Ochoa, A. David 1 Baughn, James W. 1; Email Address: jwbaughn@ucdavis.edu Byerley, Aaron R. 2; Affiliation: 1: Department of Mechanical and Aeronautical Engineering, One Shields Avenue, University of California, Davis, CA 95616-5294, USA 2: Department of Aeronautics, United States Air Force Academy, CO 80840-6222, USA; Source Info: Apr2005, Vol. 26 Issue 2, p264; Subject Term: HEAT transfer; Subject Term: NUSSELT number; Subject Term: VISUAL perception; Subject Term: LIGHT sources; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.ijheatfluidflow.2004.08.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17411254&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Klepaczko, J.R. AU - Hughes, M.L. T1 - Scaling of wear in kinetic energy penetrators JO - International Journal of Impact Engineering JF - International Journal of Impact Engineering Y1 - 2005/04// VL - 31 IS - 4 M3 - Article SP - 435 EP - 459 SN - 0734743X AB - A new approach to the wear kinetics in kinetic energy (KE) steel penetrators is presented in this paper. The range of terminal velocities is analyzed up to ∼1300 m/s. Ballistic experiments indicate that below hydrodynamic transition a significant erosion of steel penetrators is observed with concrete targets. As a rule, the shape of the nose region is significantly changed as a result of the penetration process, and smaller erosion is found in the shank region. Since during material removal the nose region is considered as a critical one, detailed studies of the wear rate were undertaken, and the results are presented in this paper. The analysis of wear rate is based on the data collected by personnel at Sandia National Laboratories, as well as by personnel at the Air Force Research Laboratory Munitions Directorate Damage Mechanisms Branch (AFRL/MNMW), located at Eglin Air Force Base, Florida for concrete targets and 4340 steel penetrators. It was found that a proper normalization of penetration experiments performed with different scales leads to the universal parameters defined as the rate of wear and the rate sensitivity of wear. These universal measurable quantities establish an effective measure of the wear intensity during penetration. Many physical processes may contribute during high-speed erosion, including melting, phase transformation and others; in this paper more details of the wear mechanism by ejection of the melt material are discussed. The model described herein permits for estimation of the order of the rate of wear and the velocity sensitivity of wear. [Copyright &y& Elsevier] AB - Copyright of International Journal of Impact Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDRODYNAMICS KW - FLUID dynamics KW - BLADES (Hydraulic machinery) KW - STEEL KW - Impact wear KW - Kinetic energy penetrators N1 - Accession Number: 14715483; Klepaczko, J.R. 1; Email Address: klepaczko@lpmm.univ-metz.fr Hughes, M.L. 2; Affiliation: 1: Graduate Engineering & Research Center, University of Florida, 1350 N. Poquito Road, Shalimar, FL 32579, USA 2: Air Force Research Laboratory Munitions Directorate, AFRL/MN, 101 W. Eglin Blvd., Ste. 135, Eglin Air Force Base, FL 32542, USA; Source Info: Apr2005, Vol. 31 Issue 4, p435; Subject Term: HYDRODYNAMICS; Subject Term: FLUID dynamics; Subject Term: BLADES (Hydraulic machinery); Subject Term: STEEL; Author-Supplied Keyword: Impact wear; Author-Supplied Keyword: Kinetic energy penetrators; NAICS/Industry Codes: 331221 Rolled Steel Shape Manufacturing; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 25p; Document Type: Article L3 - 10.1016/j.ijimpeng.2004.02.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14715483&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mrozek, Donald J. AU - Vandervort, Bruce T1 - Afterburner: Naval Aviators and the Vietnam War. JO - Journal of Military History JF - Journal of Military History Y1 - 2005/04// VL - 69 IS - 2 M3 - Book Review SP - 605 EP - 606 SN - 08993718 AB - Reviews the book "Afterburner: Naval Aviators and the Vietnam War," by John Darrell Sherwood. KW - VIETNAM War, 1961-1975 KW - NONFICTION KW - SHERWOOD, John Darrell KW - AFTERBURNER: Naval Aviators & the Vietnam War (Book) N1 - Accession Number: 16552904; Mrozek, Donald J. 1 Vandervort, Bruce 2; Affiliation: 1: United States Air Force Academy, Colorado Springs, Colorado 2: Virginia Military Institute; Source Info: Apr2005, Vol. 69 Issue 2, p605; Subject Term: VIETNAM War, 1961-1975; Subject Term: NONFICTION; Reviews & Products: AFTERBURNER: Naval Aviators & the Vietnam War (Book); People: SHERWOOD, John Darrell; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16552904&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pavuk, Marian AU - Michalek, Joel E. AU - Schecter, Arnold AU - Ketchum, Norma S. AU - Akhtar, Fatema Z. AU - Fox, Karen A. T1 - Did TCDD Exposure or Service in Southeast Asia Increase the Risk of Cancer in Air Force Vietnam Veterans Who Did Not Spray Agent Orange? JO - Journal of Occupational & Environmental Medicine JF - Journal of Occupational & Environmental Medicine Y1 - 2005/04// VL - 47 IS - 4 M3 - Article SP - 335 EP - 342 SN - 10762752 AB - Objective: We sought to examine cancer incidence in 1482 Air Force veterans who served in Southeast Asia (SEA) and who were not occupationally exposed to herbicides. Methods: Cancer incidence between 1982 and 2003 was determined by record review and Cox proportional hazards models were used to estimate risk ratios across serum 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and years served in SEA categories. Results: All sites cancer risk increased with TCDD (relative risk = 1.6, 95% confidence interval = 1.2–2.2). The risk of prostate cancer increased with years of SEA service but not with TCDD. TCDD and years of SEA service interacted with all sites cancer; the risk was greatest in those with the highest TCDD levels and the longest time served in SEA. Conclusions: These results suggest nonoccupational exposures to TCDD or other factors while in SEA may contribute to cancer risk in these veterans. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Occupational & Environmental Medicine is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TETRACHLORODIBENZODIOXIN KW - AGENT Orange KW - VETERANS KW - DISEASES KW - PROSTATE cancer KW - CANCER KW - DISEASES -- Risk factors N1 - Accession Number: 17052203; Pavuk, Marian 1 Michalek, Joel E. 2; Email Address: joel.michalek@brooks.af.mil. Schecter, Arnold 3 Ketchum, Norma S. 2 Akhtar, Fatema Z. 4 Fox, Karen A. 5; Affiliation: 1: SpecPro, Inc., San Antonio, Texas 2: Air Force Research Laboratory, Brooks City-Base, Texas 3: University of Texas School of Public Health, Dallas 4: The START Center, San Antonio, Texas 5: US Air Force School of Aerospace Medicine, Brooks City-Base, Texas; Source Info: Apr2005, Vol. 47 Issue 4, p335; Subject Term: TETRACHLORODIBENZODIOXIN; Subject Term: AGENT Orange; Subject Term: VETERANS; Subject Term: DISEASES; Subject Term: PROSTATE cancer; Subject Term: CANCER; Subject Term: DISEASES -- Risk factors; NAICS/Industry Codes: 923140 Administration of Veterans' Affairs; Number of Pages: 8p; Document Type: Article L3 - 10.1097/01.jom.0000158739.56427.24 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17052203&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chichibu, S F AU - Uedono, A AU - Tsukazaki, A AU - Onuma, T AU - Zamfirescu, M AU - Ohtomo, A AU - Kavokin, A AU - Cantwell, G AU - Litton, C W AU - Sota, T AU - Kawasaki, M T1 - Exciton–polariton spectra and limiting factors for the room-temperature photoluminescence efficiency in ZnO. JO - Semiconductor Science & Technology JF - Semiconductor Science & Technology Y1 - 2005/04// VL - 20 IS - 4 M3 - Article SP - S67 EP - S77 SN - 02681242 AB - Static and dynamic responses of excitons in state-of-the-art bulk and epitaxial ZnO are reviewed to support the possible realization of polariton lasers, which are coherent and monochromatic light sources due to Bose condensation of exciton–polaritons in semiconductor microcavities (MCs). To grasp the current problems and to pave the way for obtaining ZnO epilayers of improved quality, the following four principal subjects are treated: (i) polarized optical reflectance (OR), photoreflectance (PR) and photoluminescence (PL) spectra of the bulk and epitaxial ZnO were recorded at 8 K. Energies of PR resonances corresponded to those of upper and lower exciton–polariton branches, where A-, B- and C-excitons couple simultaneously to an electromagnetic wave. PL peaks due to the corresponding polariton branches were observed. Longitudinal–transverse splittings (ωLT) of the corresponding excitons were 1.5, 11.1 and 13.1 meV, respectively. The latter two values are more than two orders of magnitude greater than that of GaAs being 0.08 meV. (ii) Using these values and material parameters, corresponding vacuum-field Rabi splitting of exciton–polaritons coupled to a model MC mode was calculated to be 191 meV, which is the highest value ever reported for semiconductor MCs and satisfies the requirements to observe the strong exciton–light coupling regime necessary for polariton lasing above room temperature. (iii) Polarized OR and PR spectra of an out-plane nonpolar ZnO epilayer grown by laser-assisted molecular beam epitaxy (L-MBE) were measured, since ZnO quantum wells (QWs) grown in nonpolar orientations are expected to show higher emission efficiencies due to the elimination of spontaneous and piezoelectric polarization fields normal to the QW plane. They exhibited in-plane anisotropic exciton resonances according to the polarization selection rules for anisotropically-strained wurzite material. (iv) Impacts of point defects on the nonradiative processes in L-MBE ZnO were studied using time-resolved PL making a connection with the results of positron annihilation measurement. Free excitonic PL intensity at room temperature naturally increased with the increase in nonradiative lifetime (τnr). The value of τnr increased and density or size of Zn vacancies (VZn) decreased with increasing growth temperature (Tg) in heteroepitaxial films grown on a ScAlMgO4 substrate, and the use of homoepitaxial substrates further reduced VZn density. The value of τnr was shown to increase with the decrease in gross density of positively and negatively charged and neutral point defects including complexes rather than with the decrease in VZn density. The results indicate that the nonradiative recombination process is governed not by single point defects, but by certain defects introduced with the incorporation of VZn, such as VZn-defect complexes. As a result of defect elimination by growing the films at high Tg followed by subsequent post-growth in situ annealing, combined with the use of high-temperature-annealed ZnO self-buffer layer, a record long τnr for spontaneous emission of 3.8 ns was obtained at room temperature. By using progressively improving epitaxial growth methods, the polariton laser effect is expected to be observed at room temperature in the near future. [ABSTRACT FROM AUTHOR] AB - Copyright of Semiconductor Science & Technology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 86087269; Chichibu, S F 1,2,3 Uedono, A 1 Tsukazaki, A 4 Onuma, T 3; Email Address: optoelec@bk.tsukuba.ac.jp Zamfirescu, M 5 Ohtomo, A 4 Kavokin, A 5 Cantwell, G 6 Litton, C W 7 Sota, T 8 Kawasaki, M 4,9; Affiliation: 1: Institute of Applied Physics and Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8573, Japan 2: Photodynamics Research Center, Institute of Physical and Chemical Research (RIKEN), Sendai 980-0868, Japan 3: NICP, ERATO, Japan Science and Technology Agency, Kawaguchi 332-0012, Japan 4: Institute for Materials Research, Tohoku University, Sendai 980-8755, Japan 5: LASMEA, UMR 6602 CNRS/Universite Blaise Pascal, 63177, Aubiere, Cedex, France 6: ZN-Technology Inc, 910 Columbia St, Brea, CA 92821, USA 7: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 8: Department of Electrical Engineering and Bioscience, Waseda University, Shinjuku 169-8555, Japan 9: Combinatorial Materials Exploration and Technology (COMET), Tsukuba 305-0044, Japan; Source Info: 2005, Vol. 20 Issue 4, pS67; Number of Pages: 11p; Document Type: Article L3 - 10.1088/0268-1242/20/4/009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=86087269&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gillespie, J. AU - Crespo, A. AU - Fitch, R. AU - Jessen, G. AU - Via, G. T1 - AlGaN/GaN ohmic contact resistance variations across epitaxial suppliers JO - Solid-State Electronics JF - Solid-State Electronics Y1 - 2005/04// VL - 49 IS - 4 M3 - Article SP - 670 EP - 672 SN - 00381101 AB - Abstract: Six AlGaN/GaN epitaxy suppliers grew their standard films on SiC substrates as deliverables for Defense Advanced Research Projects Agency’s (DARPA’s) “Wide Bandgap Technology Initiative”. An ohmic contact study was performed to determine an optimum process for each supplier and to study the impact of growth conditions on contact resistance. On each wafer four metal stacks were evaporated, with one being the epitaxial supplier’s proprietary stack. The wafers were diced and alloyed using AFRL’s standard conditions and the epitaxial supplier’s condition. The optimal metal stack was found for each wafer and yielded contact resistances lower than 1Ωmm. However, each wafer required a different metal stack in order to achieve the lowest contact resistance, which indicates that growth conditions can have a large impact on ohmic contact results. The molybdenum (Mo) based ohmic contacts showed little variation from sample to sample and produced marginally acceptable ohmic contact values across all material suppliers. The Mo based contacts show potential for optimization as a generic ohmic contact that is not dependent on the growth conditions of the material. [Copyright &y& Elsevier] AB - Copyright of Solid-State Electronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTORS KW - SEMICONDUCTOR-metal boundaries KW - CRYSTAL growth KW - EPITAXY KW - AlGaN/GaN KW - GaN KW - Ohmic N1 - Accession Number: 17411535; Gillespie, J.; Email Address: james.gillespie@wpafb.af.mil Crespo, A. 1 Fitch, R. 1 Jessen, G. 1 Via, G. 1; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, 2241 Avionics Circle, WPAFB, OH 45433-7322, USA; Source Info: Apr2005, Vol. 49 Issue 4, p670; Subject Term: SEMICONDUCTORS; Subject Term: SEMICONDUCTOR-metal boundaries; Subject Term: CRYSTAL growth; Subject Term: EPITAXY; Author-Supplied Keyword: AlGaN/GaN; Author-Supplied Keyword: GaN; Author-Supplied Keyword: Ohmic; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.sse.2004.12.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17411535&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ehrenreich, T. AU - Zhdanov, B. AU - Takekoshi, T. AU - Phipps, S.P. AU - Knize, R.J. T1 - Diode pumped caesium laser. JO - Electronics Letters JF - Electronics Letters Y1 - 2005/03/31/ VL - 41 IS - 7 M3 - Article SP - 415 EP - 416 PB - Institution of Engineering & Technology SN - 00135194 AB - A continuous-wave caesium vapour laser with diode laser pumping is demonstrated. An output power of more than 130 mW was achieved using a 400 mW pump giving an overall optical efficiency better than 32%. it is expected to increase the laser efficiency with improvement to the experimental setup. [ABSTRACT FROM AUTHOR] AB - Copyright of Electronics Letters is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL vapor lasers KW - LASERS KW - OPTOELECTRONIC devices KW - GAS lasers KW - LIGHT amplifiers N1 - Accession Number: 16616346; Ehrenreich, T. 1; Email Address: thomas.ehrenreich@usafa.ar.mil Zhdanov, B. 1 Takekoshi, T. 1 Phipps, S.P. 1 Knize, R.J. 1; Affiliation: 1: Department of Physics, United States Air Force Academy, CO 80840, USA; Source Info: 3/31/2005, Vol. 41 Issue 7, p415; Subject Term: METAL vapor lasers; Subject Term: LASERS; Subject Term: OPTOELECTRONIC devices; Subject Term: GAS lasers; Subject Term: LIGHT amplifiers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 2p; Document Type: Article L3 - 10.1049/eI:20058388 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16616346&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hsiao, Vincent K. S. AU - Tzu-Chau Lin AU - He, Guang S. AU - Cartwright, Alexander N. AU - Prasad, Paras N. AU - Natarajan, Lalgudi V. AU - Tondiglia, Vincent P. AU - Bunning, Timothy J. T1 - Optical microfabrication of highly reflective volume Bragg gratings. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/03/28/ VL - 86 IS - 13 M3 - Article SP - 131113 PB - American Institute of Physics SN - 00036951 AB - An approach for fabricating wide-bandwidth and highly reflective Bragg grating structures with the technique of holographic photopolymerization of a liquid crystal (LC) polymer composite is presented. The key to this fabrication method that distinguishes it from previous methods is the use of a nonreactive solvent, acetone, to dissolve the photoinitiator and coinitiator in an acrylate monomer/LC mixture. The addition of acetone results in the creation of controllable periodic voids inside the thin film after the acetone evaporates. Peak reflectivity as high as 80% and a broad reflection bandwidth of 80 nm were observed in the reflection gratings formed with acetone present in the starting mixture. It was estimated from a fit to the experimental data that the resulting index mismatch was approximately 0.2; consistent with the presence of air voids. It is determined that tunable wavelength, diffraction efficiency, and bandwidth of reflection notches can be achieved by backfilling with fluids of different refractive indices. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMER liquid crystals KW - LIQUID crystals KW - POLYMERS KW - PHOTOPOLYMERIZATION KW - PHOTOPOLYMERS KW - PHOTOCHEMISTRY N1 - Accession Number: 16702300; Hsiao, Vincent K. S. 1 Tzu-Chau Lin 1 He, Guang S. 1 Cartwright, Alexander N. 1; Email Address: anc@buffalo.edu Prasad, Paras N. 1 Natarajan, Lalgudi V. 2 Tondiglia, Vincent P. 2 Bunning, Timothy J. 3; Affiliation: 1: Institute for Lasers, Photonics and Biophotonics, State University of New York at Buffalo, New York 14260-1920 2: Science Applications International Corporation, Ohio 45431 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: 3/28/2005, Vol. 86 Issue 13, p131113; Subject Term: POLYMER liquid crystals; Subject Term: LIQUID crystals; Subject Term: POLYMERS; Subject Term: PHOTOPOLYMERIZATION; Subject Term: PHOTOPOLYMERS; Subject Term: PHOTOCHEMISTRY; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.1880435 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16702300&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Midey AU - A. J. AU - Miller AU - T. M. AU - Morris AU - R. A. AU - Viggiano AU - A. A. T1 - Reactions of POxCly- Ions with H and H2 from 298 to 500 K. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2005/03/24/ VL - 109 IS - 11 M3 - Article SP - 2559 EP - 2563 SN - 10895639 AB - Rate constants and product branching ratios for POxCly- ions reacting with H and H2 were measured in a selected ion flow tube (SIFT) from 298 to 500 K. PO2Cl-, PO2Cl2-, POCl2-, and POCl3- were all unreactive with H2, having a rate constant with an upper limit of <5 × 10-12 cm3 s-1. PO2Cl2- did not react with H atoms either, having a similar rate constant limit of <5 × 10-12 cm3 s-1. The rate constants for PO2Cl-, POCl2-, and POCl3- reacting with H showed no temperature dependence over the limited range of 298-500 K and were approximately 10-20% of the collision rate constant. Cl abstraction by H to form HCl was the predominant product channel for PO2Cl-, POCl2-, and POCl3-, with a small amount of Cl- observed from POCl2- + H. Reactions of O2 and O3 with the POCl- products ions from the reaction of POCl2- + H were observed to yield predominantly PO3- and PO2-, respectively. POCl- reacted with O2 and O3 with rate constants of 8.9 ± 1.1 × 10-11 and 5.2 ± 3.3 × 10-10 cm3 s-1, respectively. No associative electron detachment in the reactions with H atoms was observed with any of the reactant ions; however, detachment was observed with a PO- secondary product ion at high H atom concentrations. Results of new G3 theoretical calculations of optimized geometries and energies for the products observed are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERMEDIATES (Chemistry) KW - PHYSICAL & theoretical chemistry KW - NUCLEAR reactions KW - PARTICLES (Nuclear physics) N1 - Accession Number: 18432647; Midey A. J. 1 Miller T. M. 1 Morris R. A. 1 Viggiano A. A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom AFB, Massachusetts 01731-3010; Source Info: Mar2005, Vol. 109 Issue 11, p2559; Subject Term: INTERMEDIATES (Chemistry); Subject Term: PHYSICAL & theoretical chemistry; Subject Term: NUCLEAR reactions; Subject Term: PARTICLES (Nuclear physics); Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18432647&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ren, Weiju AU - Mall, Shankar AU - Sanders, Jeffrey H. AU - Sharma, Shashi K. T1 - Evaluation of coatings on Ti–6Al–4V substrate under fretting fatigue JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2005/03/21/ VL - 192 IS - 2/3 M3 - Article SP - 177 EP - 188 SN - 02578972 AB - Abstract: Four coating systems, TiCN, CrN+MoS2, Cu–Al and Ag+ irradiated layer, were evaluated for their potential towards improving fretting fatigue behavior of titanium alloy, Ti–6Al–4V. Coefficients of friction (COF) and fretting fatigue lives of the specimens with and without coating were compared. Coating damage was characterized through scanning electron microscopy and energy dispersive spectrometry. COF may increase or decrease during the fretting fatigue due to generation of coating debris. The decrease in COF can be attributed to lubrication by coating debris produced during fretting fatigue. Further, when a coating is subjected to fretting, it would degrade. Improvement in fretting fatigue life, if any, can only be achieved only when the coating degradation is reduced or eliminated. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COATINGS industry KW - ELECTRON microscopy KW - MICROSCOPY KW - TITANIUM KW - Coefficients of friction KW - Fretting KW - Ti–6Al–4V N1 - Accession Number: 15953014; Ren, Weiju 1 Mall, Shankar 2; Email Address: Shankar.Mall@afit.edu Sanders, Jeffrey H. 3 Sharma, Shashi K. 3; Affiliation: 1: Systran Federal Corp., Dayton, OH, USA 2: Air Force Institute of Technology, Wright-Patterson Air Force Base, Bldg. 640, 2950 Hobson Way, Air Force Institute of Technology, Wright-Patterson AFB, OH, 45433-7765, OH, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH, USA; Source Info: Mar2005, Vol. 192 Issue 2/3, p177; Subject Term: COATINGS industry; Subject Term: ELECTRON microscopy; Subject Term: MICROSCOPY; Subject Term: TITANIUM; Author-Supplied Keyword: Coefficients of friction; Author-Supplied Keyword: Fretting; Author-Supplied Keyword: Ti–6Al–4V; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.surfcoat.2004.07.084 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15953014&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vaghjiani AU - G. L. T1 - 248-nm Laser Photolysis of CHBr3/O-Atom Mixtures:  Kinetic Evidence for UV CO(A) Chemiluminescence in the Reaction of Methylidyne Radicals with Atomic Oxygen. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2005/03/17/ VL - 109 IS - 10 M3 - Article SP - 2197 EP - 2206 SN - 10895639 AB - The 4th positive and Cameron band emissions from electronically excited CO have been observed for the first time in 248-nm pulsed laser photolysis of a trace amount of CHBr3 vapor in an excess of O atoms. O atoms were produced by dissociation of N2O (or O2) in a cw-microwave discharge cavity in 2.0 Torr of He at 298 K. The CO emission intensity in these bands showed a quadratic dependence on the laser fluence employed. Temporal profiles of the CO(A) and other excited-state products that formed in the photoproduced precursor + O-atom reactions were measured by recording their time-resolved chemiluminescence in discrete vibronic bands. The CO 4th positive transition (A1Π, v‘ = 0 → X1Σ+, v‘ ‘ = 2) near 165.7 nm was monitored in this work to deduce the pseudo-first-order decay kinetics of the CO(A) chemiluminescence in the presence of various added substrates (CH4, NO, N2O, H2, and O2). From this, the second-order rate coefficient values were determined for reactions of these substrates with the photoproduced precursors. The measured reactivity trends suggest that the prominent precursors responsible for the CO(A) chemiluminescence are the methylidyne radicals, CH(X2Π) and CH(a4Σ-), whose production requires the absorption of at least 2 laser photons by the photolysis mixture. The O-atom reactions with brominated precursors (CBr, CHBr, and CBr2), which also form in the photolysis, are shown to play a minor role in the production of the CO(A or a) chemiluminescence. However, the CBr2 + O-atom reaction was identified as a significant source for the 289.9-nm Br2 chemiluminescence that was also observed in this work. The 282.2-nm OH and the 336.2-nm NH chemiluminescences were also monitored to deduce the kinetics of CH(X2Π) and CH(a4Σ-) reactions when excess O2 and NO were present. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMILUMINESCENCE KW - PHYSICAL & theoretical chemistry KW - PHOTOSYNTHETIC oxygen evolution KW - ATOMS N1 - Accession Number: 23146244; Vaghjiani G. L. 1; Affiliation: 1: ERC, Inc., Air Force Research Laboratory, AFRL/PRSA, 10 E Saturn Blvd, Edwards AFB, California 93524; Source Info: Mar2005, Vol. 109 Issue 10, p2197; Subject Term: CHEMILUMINESCENCE; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: PHOTOSYNTHETIC oxygen evolution; Subject Term: ATOMS; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23146244&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Adler, Eric D. AU - Calcatera, Mark C. AU - Luy, Johann-Friedrich AU - Palmer, W. Devereux AU - Purdy, Daniel S. T1 - Guest Editorial. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques Y1 - 2005/03/15/Mar2005 Part 2 of 2 VL - 53 IS - 3 M3 - Editorial SP - 1005 EP - 1008 SN - 00189480 AB - Presents an introduction to the articles related to multifunctional radio frequency systems published in the March 2005 edition of the journal "Transactions." KW - RADIO frequency KW - TRANSACTIONS (Periodical) N1 - Accession Number: 16470062; Adler, Eric D. 1 Calcatera, Mark C. 2 Luy, Johann-Friedrich 3 Palmer, W. Devereux 4 Purdy, Daniel S. 5; Affiliation: 1: Army Research Laboratory, Millimeter Wave Branch, Adelphia, MD 20783-1197 USA. 2: Wright-Patterson AFB, Air Force Research Laboratory, Dayton, OH 45433 USA. 3: DaimlerChrysler Research Center, Inline Inspection Department, Ulm, D-89081 Germany. 4: U.S. Army Research Office, Engineering Sciences Directorate, Durham, NC 27709-2211 USA. 5: U.S. Office of Naval Research, Electronics Division Arlington, VA 22217-5660 USA.; Source Info: Mar2005 Part 2 of 2, Vol. 53 Issue 3, p1005; Subject Term: RADIO frequency; Reviews & Products: TRANSACTIONS (Periodical); Number of Pages: 4p; Document Type: Editorial L3 - 10.1109/TMTT.2005.843470 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16470062&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cai, D. AU - Zheng, L.L. AU - Zhang, H. AU - Tassev, V.L. AU - Bliss, D.F. T1 - Modeling of aluminum nitride growth by halide vapor transport epitaxy method JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2005/03/15/ VL - 276 IS - 1/2 M3 - Article SP - 182 EP - 193 SN - 00220248 AB - Abstract: A halide vapor transport epitaxy (HVTE) system was designed and built at USAF Research Laboratory to grow high-quality aluminum nitride film at growth rates up to 40μm/h with the deposition temperature of 1100–1300°C and the pressure ranging from 3.5–760Torr (J. Crystal Growth 250 (2003) 1). In order to optimize the growth process, a numerical model, which is capable of describing multi-component fluid flow, gas/surface chemistry, conjugate heat transfer, and species transport, has been developed to help in design and optimization of the HVTE growth system. The partial pressures of aluminum chloride amine adduct, used as the aluminum source, and anhydrous ammonia for the nitrogen, have been measured and used as the inlet boundary conditions in the computational model. By matching predicted and experimental deposition rates, the heterogeneous reaction boundary condition is determined and applied to the substrate. To optimize operating parameters, the comprehensive three-dimensional computational simulations have been performed to study the temperature distribution, species mixing process and AlN deposition rate distribution on the substrate under different geometrical configurations and operating conditions. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM nitride KW - CRYSTAL growth KW - VAPOR-plating KW - CHEMICAL vapor deposition KW - A1. Halide vapor transport epitaxy reactor KW - A1. Mass transfer KW - A1.Computer simulation KW - A3.Chemical vapor deposition process KW - B2. Semiconducting aluminum nitride N1 - Accession Number: 18007138; Cai, D. 1; Email Address: dcai@ic.sunysb.edu Zheng, L.L. 1 Zhang, H. 1 Tassev, V.L. 2 Bliss, D.F. 3; Affiliation: 1: Department of Mechanical Engineering, Stony Brook University, NY 11790, USA 2: Solid State Scientific Corporation, Hollis, NH 03049, USA 3: Air Force Research Laboratory, Hanscom AFB, MA 01732, USA; Source Info: Mar2005, Vol. 276 Issue 1/2, p182; Subject Term: ALUMINUM nitride; Subject Term: CRYSTAL growth; Subject Term: VAPOR-plating; Subject Term: CHEMICAL vapor deposition; Author-Supplied Keyword: A1. Halide vapor transport epitaxy reactor; Author-Supplied Keyword: A1. Mass transfer; Author-Supplied Keyword: A1.Computer simulation; Author-Supplied Keyword: A3.Chemical vapor deposition process; Author-Supplied Keyword: B2. Semiconducting aluminum nitride; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.jcrysgro.2004.11.339 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18007138&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Siskaninetz, W. J. AU - Ehret, J. E. AU - Lott, J. A. AU - Griffith, J. C. AU - Nelson, T. R. T1 - Enhanced performance of bipolar cascade light-emitting diodes by doping the aluminum oxide apertures. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/03/14/ VL - 86 IS - 11 M3 - Article SP - 111108 PB - American Institute of Physics SN - 00036951 AB - Performance improvements in multiple-stage, single-cavity bipolar cascade light-emitting diodes including reduced operating voltages, enhanced light generation, and reduced device heating are obtained by doping intracavity aluminum oxide apertures with silicon. This doping results in a reduced electron energy barrier and, therefore, a reduced series resistance which leads to better power and heating characteristics. Nearly 50% reductions in operating voltages, 200% increases in light power, and increased operating range are demonstrated. We discuss the direct implications of these results for the design of bipolar cascade vertical-cavity surface-emitting lasers. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHT emitting diodes KW - ALUMINUM oxide KW - LASERS KW - PARTICLES (Nuclear physics) KW - NONLINEAR optics KW - OPTOELECTRONIC devices KW - LIGHT amplifiers N1 - Accession Number: 16581628; Siskaninetz, W. J. 1,2 Ehret, J. E. 3 Lott, J. A. 2 Griffith, J. C. 4 Nelson, T. R. 4; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Air Force Institute of Technology, Wright-Patterson AFB, Ohio 45433. 2: Department of Electrical and Computer Engineering, Air Force Institute of Technology, Wright-Patterson AFB, Ohio 45433. 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433. 4: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433.; Source Info: 3/14/2005, Vol. 86 Issue 11, p111108; Subject Term: LIGHT emitting diodes; Subject Term: ALUMINUM oxide; Subject Term: LASERS; Subject Term: PARTICLES (Nuclear physics); Subject Term: NONLINEAR optics; Subject Term: OPTOELECTRONIC devices; Subject Term: LIGHT amplifiers; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1063/1.1885168 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16581628&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, Jeoung Han AU - Semiatin, S.L. AU - Lee, Chong Soo T1 - Constitutive analysis of the high-temperature deformation mechanisms of Ti–6Al–4V and Ti–6.85Al–1.6V alloys JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2005/03/10/ VL - 394 IS - 1/2 M3 - Article SP - 366 EP - 375 SN - 09215093 AB - Abstract: The high-temperature deformation mechanisms of a near-α titanium alloy (Ti–6.85Al–1.6V) and an α+β titanium alloy (Ti–6Al–4V) were deduced within the framework of inelastic-deformation theory. For this purpose, load-relaxation tests were conducted on the two alloys at temperatures ranging from 750 to 900°C. The stress versus strain rate curves of both alloys were well fit with inelastic-deformation equations which consisted of grain-matrix deformation (GMD) and grain-boundary sliding (GBS). The constitutive analysis revealed that the grain-boundary sliding resistance is higher in the near-α alloy than in the two-phase α+β alloy due to the difficulty in relaxing stress concentrations at the triple-junction regions in the near-α alloy. In addition, the internal-strength parameter (σ *) of the near-α alloy was much higher than that for the α+β alloy, thus implying that dislocation emission/slip transfer at α/α boundaries is more difficult than at α/β boundaries. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH temperatures KW - DEFORMATIONS (Mechanics) KW - METALLIC composites KW - TITANIUM alloys KW - STRAINS & stresses (Mechanics) KW - Grain-boundary sliding KW - Grain-matrix deformation KW - Internal-variable theory KW - Near-α Ti alloy KW - Ti–6Al–4V alloy N1 - Accession Number: 17522807; Kim, Jeoung Han 1 Semiatin, S.L. 2 Lee, Chong Soo 1; Email Address: cslee@postech.ac.kr; Affiliation: 1: Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, South Korea 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Mar2005, Vol. 394 Issue 1/2, p366; Subject Term: HIGH temperatures; Subject Term: DEFORMATIONS (Mechanics); Subject Term: METALLIC composites; Subject Term: TITANIUM alloys; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: Grain-boundary sliding; Author-Supplied Keyword: Grain-matrix deformation; Author-Supplied Keyword: Internal-variable theory; Author-Supplied Keyword: Near-α Ti alloy; Author-Supplied Keyword: Ti–6Al–4V alloy; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.msea.2004.11.061 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17522807&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jianjun Liu AU - Peng Zhang AU - Morokuma, Keiji AU - Sharma, Ramesh D. T1 - A new mechanism for the production of highly vibrationally excited OH in the mesosphere: An ab initio study of the reactions of O2(A 3Σu+ and A′3Δu)+H. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2005/03/08/ VL - 122 IS - 10 M3 - Article SP - 104315 PB - American Institute of Physics SN - 00219606 AB - In an attempt to explain the observed nightglow emission from OH(v=10) in the mesosphere that has the energy greater than the exothermicity of the H+O3 reaction, potential energy surfaces were calculated for reactions of high lying electronic states of O2(A 3Σu+ and A′3Δu) with atomic hydrogen H(2S) to produce the ground state products OH(2Π)+O(3P). From collinear two-dimensional scans, several adiabatic and nonadiabatic pathways have been identified. Multiconfigurational single and double excitation configuration interaction calculations show that the adiabatic pathways on a 4Δ potential surface from O2(A′3Δ)+H and a 4Σ+ potential surface from O2(A 3Σu+)+H are the most favorable, with the zero-point corrected barrier heights of as low as 0.191 and 0.182 eV, respectively, and the reactions are fast. The transition states for these pathways are collinear and early, and the reaction coordinate suggests that the potential energy release of ca. 3.8 eV (larger than the energy required to excite OH to v=10) is likely to favor high vibrational excitation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MESOSPHERE KW - CHEMICAL reactions KW - POTENTIAL energy surfaces KW - ELECTRONICS KW - ELECTRONIC excitation KW - EXCITON theory N1 - Accession Number: 16683868; Jianjun Liu 1,2 Peng Zhang 1,2 Morokuma, Keiji 1,2; Email Address: morokuma@emory.edu Sharma, Ramesh D. 3; Affiliation: 1: Cherry L. Emerson Center for Scientific Computation 2: Department of Chemistry, Emory University, Atlanta, Georgia 30322 3: Air Force Research Laboratory, Space Vehicles Directorate/VSBYB, 29 Randolph Road, Hanscom AFB, Massachusetts 01731-3010; Source Info: 3/8/2005, Vol. 122 Issue 10, p104315; Subject Term: MESOSPHERE; Subject Term: CHEMICAL reactions; Subject Term: POTENTIAL energy surfaces; Subject Term: ELECTRONICS; Subject Term: ELECTRONIC excitation; Subject Term: EXCITON theory; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 7p; Illustrations: 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.1862233 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16683868&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parker, D. R. AU - Gustafson, S. C. AU - Ross, T. D. T1 - Bayesian confidence intervals for ROC curves. JO - Electronics Letters JF - Electronics Letters Y1 - 2005/03/03/ VL - 41 IS - 5 M3 - Article SP - 279 EP - 280 PB - Institution of Engineering & Technology SN - 00135194 AB - This article discusses Bayesian confidence intervals for ROC curves. The receiver operating characteristic (ROC) curve is an established means to quantify detection system performance, as in systems that predict disease likelihood and in systems that predict the probability that a radar image contains a target. Various methods for obtaining ROC confidence intervals have been proposed but they typically employ limiting assumptions, such as that the underlying distributions are normal either directly or after a monotonic transformation. KW - STATISTICAL hypothesis testing KW - ELECTRONIC systems KW - PROBABILITY theory KW - DETECTORS KW - BAYESIAN analysis KW - SAMPLING (Statistics) N1 - Accession Number: 16332008; Parker, D. R. 1; Email Address: david.parker@afit.edu Gustafson, S. C. 1 Ross, T. D. 2; Affiliation: 1: Department of Electrical Engineering and Computer Science, Air Force Institute of Technology, Wright, Patterson AFB, OH, USA. 2: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH, USA.; Source Info: 3/3/2005, Vol. 41 Issue 5, p279; Subject Term: STATISTICAL hypothesis testing; Subject Term: ELECTRONIC systems; Subject Term: PROBABILITY theory; Subject Term: DETECTORS; Subject Term: BAYESIAN analysis; Subject Term: SAMPLING (Statistics); NAICS/Industry Codes: 541910 Marketing Research and Public Opinion Polling; Number of Pages: 2p; Document Type: Article L3 - 10.1049/el:20047523 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16332008&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jha, S.K. AU - Larsen, J.M. AU - Rosenberger, A.H. T1 - The role of competing mechanisms in the fatigue life variability of a nearly fully-lamellar γ-TiAl based alloy JO - Acta Materialia JF - Acta Materialia Y1 - 2005/03// VL - 53 IS - 5 M3 - Article SP - 1293 EP - 1304 SN - 13596454 AB - Abstract: The influence of competing mechanisms on the fatigue life behavior of a γ-TiAl based alloy was studied at room temperature and 600 °C. The alloy exhibited almost flat stress–life (S–N) behavior at both temperatures. This type of behavior was found to result from variability in life due to a probabilistic selection between two mechanisms, viz. failure by surface crack nucleation and that by subsurface crack nucleation. It is suggested that the S–N behavior of the alloy is actually composed of dual curves, over the same range of stresses, corresponding to each mechanism. This improved description of the S–N behavior (in terms of dual curves) of the alloy led to a significant reduction in the apparent uncertainty in life. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - MATERIALS -- Fatigue KW - STRAINS & stresses (Mechanics) KW - STRENGTH of materials KW - NUCLEATION KW - γ-TiAl KW - Dual mechanisms KW - Fatigue KW - Life prediction KW - Life variability N1 - Accession Number: 16289727; Jha, S.K. 1; Email Address: sushantjha@hotmail.com Larsen, J.M. 2 Rosenberger, A.H. 2; Affiliation: 1: Behavior and Life Prediction, Universal Technology Corporation, 1270 N. Fairfield Road, Dayton, OH 45432, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMN, 2230 Tenth Street, Ste_1, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Mar2005, Vol. 53 Issue 5, p1293; Subject Term: TITANIUM alloys; Subject Term: MATERIALS -- Fatigue; Subject Term: STRAINS & stresses (Mechanics); Subject Term: STRENGTH of materials; Subject Term: NUCLEATION; Author-Supplied Keyword: γ-TiAl; Author-Supplied Keyword: Dual mechanisms; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Life prediction; Author-Supplied Keyword: Life variability; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.actamat.2004.11.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16289727&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ketsdever, Andrew D. AU - Clabough, Michael T. AU - Gimelshein, Sergey F. AU - Alexeenko, Alma T1 - Experimental and Numerical Determination of Micropropulsion Device Efficiencies at Low Reynolds Numbers. JO - AIAA Journal JF - AIAA Journal Y1 - 2005/03// VL - 43 IS - 3 M3 - Article SP - 633 EP - 641 SN - 00011452 AB - The need for low-thrust propulsion systems for maneuvers on micro- and nanospacecraft is growing. Low-thrust characteristics generally lead to low-Reynolds-number flows from propulsive devices that utilize nozzle expansions. Low-Reynolds-number flows of helium and nitrogen through a small conical nozzle and a thin-walled orifice have been investigated both numerically, using the direct simulation Monte Carlo technique, and experimentally, using a nano-Newton thrust stand. For throat Reynolds number less than 100, the nozzle-to-orifice thrust ratio is less than unity; however, the corresponding ratio of specific impulse remains greater than one for the Reynolds number range from 0.02 to 200. Once the direct simulation Monte Carlo model results were verified using experimental thrust and mass flow data, the model was used to investigate the effects of geometrical variations on the conical nozzle's performance. At low Reynolds numbers, improvements to the specific impulse on the order of 4-8% were achieved through a combination of decreasing the nozzle length and increasing the nozzle expansion angle relative to the nominal experimental geometry. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - MONTE Carlo method KW - AERONAUTICS KW - ASTRONAUTICS KW - PROPULSION systems N1 - Accession Number: 16483704; Ketsdever, Andrew D. 1,2; Email Address: andrew.ketsdever@usafa.af.mil Clabough, Michael T. 3,4 Gimelshein, Sergey F. 3,5; Email Address: gimelshe@usc.edu Alexeenko, Alma 3,6; Email Address: alexeenk@usc.edu; Affiliation: 1: U. S. Air Force Research Laboratory, Edwards Air Force Base, California 93524 2: Group Leader, Aerophysics Branch, Propulsion Directorate, 10 E. Saturn Boulevard 3: University of Southern California, Los Angeles, cal4fornia 90089-1191 4: Graduate Research Assistant, Department of Aerospace and Mechanical Engineering 5: Researcb Professor, Department of Aerospace and Mechanical Engineering, 854 W. 36th Place 6: WISE Postdoctoral Fellow, Department of Aerospace and Mechanical Engineering; Source Info: Mar2005, Vol. 43 Issue 3, p633; Subject Term: AERODYNAMICS; Subject Term: MONTE Carlo method; Subject Term: AERONAUTICS; Subject Term: ASTRONAUTICS; Subject Term: PROPULSION systems; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 8p; Illustrations: 2 Diagrams, 2 Charts, 14 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16483704&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bechel, Vernon T. AU - Camping, John D. AU - Kim, Ran Y. T1 - Cryogenic/elevated temperature cycling induced leakage paths in PMCs JO - Composites: Part B, Engineering JF - Composites: Part B, Engineering Y1 - 2005/03// VL - 36 IS - 2 M3 - Article SP - 171 EP - 182 SN - 13598368 AB - Three structural carbon/polymer composites (IM7/977-2, IM7/977-3, and IM7/5250-4) were thermally cycled between liquid nitrogen (LN2) temperature and an elevated temperature of 120 or 177 °C. The extent of ply-level micro-cracks was measured as a function of cycles up to 1000 cycles as one indicator of suitability for cryogenic containment applications. The choice of material systems, lay-ups, and thermal cycles allowed the study of the effects of the thermal cycle profile, mode I toughness, and cure temperature on the damage accumulation. The addition of a hold period at elevated temperature led to micro-crack initiation after fewer cycles and increased the micro-crack density in all plies for all of the material systems. The consequences of adding the hold period at elevated temperature to the thermal cycle were particularly severe for IM7/977-2. The IM7/977-2 samples were nearly micro-crack free after thermally cycling between room temperature and LN2 temperature, but had up to 64 times greater micro-crack density in some plies after being subject to cycling between elevated temperature and LN2 temperature. [Copyright &y& Elsevier] AB - Copyright of Composites: Part B, Engineering is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID nitrogen KW - RESEARCH KW - NITROGEN KW - TEMPERATURE KW - A. Polymer-matrix composites KW - B. Environmental degradation KW - C. Residual stress KW - C. Transverse cracking KW - Cryogenic cycling N1 - Accession Number: 14580030; Bechel, Vernon T. 1; Email Address: vernon.bechel@wpafb.af.mil Camping, John D. 2 Kim, Ran Y. 2; Affiliation: 1: Air Force Research Laboratory, AFRL/MLBCM, 2941 P St., Rm136, Wright Patterson AFB, OH 45433-7750, USA 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA; Source Info: Mar2005, Vol. 36 Issue 2, p171; Subject Term: LIQUID nitrogen; Subject Term: RESEARCH; Subject Term: NITROGEN; Subject Term: TEMPERATURE; Author-Supplied Keyword: A. Polymer-matrix composites; Author-Supplied Keyword: B. Environmental degradation; Author-Supplied Keyword: C. Residual stress; Author-Supplied Keyword: C. Transverse cracking; Author-Supplied Keyword: Cryogenic cycling; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.compositesb.2004.03.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14580030&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Padgett AU - C. W. AU - Walsh AU - R. D. AU - Drake AU - G. W. AU - Hanks AU - T. W. AU - Pennington AU - W. T. T1 - New Conformations and Binding Modes in Halogen-Bonded and Ionic Complexes of 2,3,5,6-Tetra(2‘-pyridyl)pyrazine. JO - Crystal Growth & Design JF - Crystal Growth & Design Y1 - 2005/03// VL - 5 IS - 2 M3 - Article SP - 745 EP - 753 SN - 15287483 AB - The enormous potential of 2,3,5,6-tetra(2‘-pyridyl)pyrazine (tppz) as a versatile multisite component for the design and construction of complex structures is demonstrated by the preparation of several new complexes that possess previously unobserved binding modes and conformations. tppz forms halogen-bonded complexes with diiodine and organoiodides and forms ionic compounds in which tppz is either di- or tetraprotonated. We have prepared two new halogen-bonded complexes of tppz with diiodine and with tetraiodoethylene (TIE). Both possess extended chain structures of alternating donors and acceptors, with the tppz donors in the diiodine complex linked by two neutral -I2·I2·I2- chains. Two new polyiodide complexes of tppz have also been prepared, one of which has di- and the other tetraprotonated cations. A bromide salt of the tetraprotonated tppz cation has also been prepared and found to be isomorphous with the known chloride salt. In the diiodine complex, tppz·6I2, the conformation of tppz is similar to that found in the metastable, tetragonal polymorph of the free donor, and obeying Ostwald''s rule of stages, decomposes through solid-state loss of I2 to give exclusively this polymorph. In the TIE complex, tppz·TIE, has a previously unreported conformation, but decomposes to the thermodynamically stable monoclinic polymorph upon loss of TIE. The diprotonated cation, [tppz(H)2]2+, which forms two intramolecular N−H···N hydrogen bonds and crystallizes with (I2·I3)- anions, has a twisted conformation as opposed to the bowed conformation found for this cation with tetraphenylborate counterions. Tetraprotonated tppz hydrogen bonds to two iodide anions to form [tppz(H2I)2]2+ cations, similar to the bromide and chloride salts, but with triiodide anions rather than hydrated halides as in the lighter derivatives. [ABSTRACT FROM AUTHOR] AB - Copyright of Crystal Growth & Design is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CATIONS KW - COMPLEX compounds KW - IONS KW - CRYSTALLIZATION N1 - Accession Number: 20155035; Padgett C. W. 1 Walsh R. D. 1 Drake G. W. 1 Hanks T. W. 1 Pennington W. T. 1; Affiliation: 1: Department of Chemistry, Clemson University, Clemson, South Carolina 29634-1905, Air Force Research Laboratory, Edwards Air Force Base, California 93524-7680, and Department of Chemistry, Furman University, Greenville, South Carolina 29613; Source Info: Mar2005, Vol. 5 Issue 2, p745; Subject Term: CATIONS; Subject Term: COMPLEX compounds; Subject Term: IONS; Subject Term: CRYSTALLIZATION; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20155035&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Krise, Thomas W. T1 - Mastery, Tyranny, and Desire: Thomas Thistlewood and His Slaves in the Anglo-Jamaican World. JO - Early American Literature JF - Early American Literature Y1 - 2005/03// VL - 40 IS - 1 M3 - Book Review SP - 202 EP - 205 PB - University of North Carolina Press SN - 00128163 AB - Reviews the book "Mastery, Tyranny, and Desire: Thomas Thistlewood and His Slaves in the Anglo-Jamaican World," by Trevor Burnard. KW - SLAVERY KW - NONFICTION KW - BURNARD, Trevor KW - MASTERY, Tyranny & Desire: Thomas Thistlewood & His Slaves in the Anglo-Jamaican World (Book) N1 - Accession Number: 15888527; Krise, Thomas W. 1; Affiliation: 1: United States Air Force Academy; Source Info: Mar2005, Vol. 40 Issue 1, p202; Subject Term: SLAVERY; Subject Term: NONFICTION; Reviews & Products: MASTERY, Tyranny & Desire: Thomas Thistlewood & His Slaves in the Anglo-Jamaican World (Book); People: BURNARD, Trevor; Number of Pages: 4p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15888527&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sabelkin, V. AU - Martinez, S.A. AU - Mall, S. AU - Sathish, S. AU - Blodgett, M.P. T1 - Effects of shot-peening intensity on fretting fatigue crack-initiation behaviour of Ti–6Al–4V. JO - Fatigue & Fracture of Engineering Materials & Structures JF - Fatigue & Fracture of Engineering Materials & Structures Y1 - 2005/03// VL - 28 IS - 3 M3 - Article SP - 321 EP - 332 PB - Wiley-Blackwell SN - 8756758X AB - The effects of shot-peening intensity on fretting fatigue crack-initiation behaviour of titanium alloy, Ti–6Al–4V, were investigated. Three intensities, 4A, 7A and 10A with 100% surface coverage, were employed. The contact geometry involved a cylinder-on-flat configuration. Residual stress and improvement in fretting fatigue life were directly related to shot-peening intensity. The magnitude of compensatory tensile stress and its location away from the contact surface increased with increasing intensity. The relaxation of residual stress occurred during fretting fatigue which increased with increasing the number of cycles. An analysis using a critical plane-based fatigue crack-initiation model showed that stress relaxation during the fretting fatigue affects life and location of crack initiation. Greater relaxation of the residual stress caused greater reduction of fatigue life and shifted the location of crack initiation from inside towards the contact surface. Modified shear stress range (MSSR) parameter was able to predict fretting fatigue crack-initiation location, which agreed with the experimental counterparts. Also, the computed parameter showed an appropriate trend with the experimental observations of the measured fretting fatigue life based on the shot-peening intensity. [ABSTRACT FROM AUTHOR] AB - Copyright of Fatigue & Fracture of Engineering Materials & Structures is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRENGTH of materials KW - TITANIUM alloys KW - TITANIUM KW - TITANIUM group KW - RESIDUAL stresses KW - STRAINS & stresses (Mechanics) KW - fretting fatigue KW - MSSR parameter KW - residual stress KW - shot-peening KW - titanium alloy N1 - Accession Number: 15924438; Sabelkin, V. 1 Martinez, S.A. 2 Mall, S. 1; Email Address: shankar.mall@afit.edu Sathish, S. 2 Blodgett, M.P. 2; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH 45433-7765, USA 2: Metals, Ceramics and NDE Division, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Source Info: Mar2005, Vol. 28 Issue 3, p321; Subject Term: STRENGTH of materials; Subject Term: TITANIUM alloys; Subject Term: TITANIUM; Subject Term: TITANIUM group; Subject Term: RESIDUAL stresses; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: fretting fatigue; Author-Supplied Keyword: MSSR parameter; Author-Supplied Keyword: residual stress; Author-Supplied Keyword: shot-peening; Author-Supplied Keyword: titanium alloy; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 12p; Document Type: Article L3 - 10.1111/j.1460-2695.2005.00871.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15924438&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Simpson, Brian D. AU - Bolia, Robert S. AU - McKinley, Richard L. AU - Brungart, Douglas S. T1 - The impact of hearing protection on sound localization and orienting behavior. JO - Human Factors JF - Human Factors Y1 - 2005///Spring2005 VL - 47 IS - 1 M3 - journal article SP - 188 EP - 198 SN - 00187208 AB - The effect of hearing protection devices (HPDs) on sound localization was examined in the context of an auditory-cued visual search task. Participants were required to locate and identify a visual target in a field of 5, 20, or 50 visual distractors randomly distributed on the interior surface of a sphere. Four HPD conditions were examined: earplugs, earmuffs, both earplugs and earmuffs simultaneously (double hearing protection), and no hearing protection. In addition, there was a control condition in which no auditory cue was provided. A repeated measures analysis of variance revealed significant main effects of HPD for both search time and head motion data (p < .05), indicating that the degree to which localization is disrupted by HPDs varies with the type of device worn. When both earplugs and earmuffs are worn simultaneously, search times and head motion are more similar to those found when no auditory cue is provided than when either earplugs or earmuffs alone are worn, suggesting that sound localization cues are so severely disrupted by double hearing protection the listener can recover little or no information regarding the direction of sound source origin. Potential applications of this research include high-noise military, aerospace, and industrial settings in which HPDs are necessary but wearing double protection may compromise safety and/or performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIRECTIONAL hearing KW - ANALYSIS of variance KW - EXPERIMENTAL design KW - REGRESSION analysis KW - AERONAUTICS KW - STATISTICAL hypothesis testing N1 - Accession Number: 17013226; Simpson, Brian D. 1; Email Address: brian.simpson@wpafb.af.mil Bolia, Robert S. 1 McKinley, Richard L. 1 Brungart, Douglas S. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio.; Source Info: Spring2005, Vol. 47 Issue 1, p188; Subject Term: DIRECTIONAL hearing; Subject Term: ANALYSIS of variance; Subject Term: EXPERIMENTAL design; Subject Term: REGRESSION analysis; Subject Term: AERONAUTICS; Subject Term: STATISTICAL hypothesis testing; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; Number of Pages: 11p; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17013226&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Best, Steven R. T1 - Low Q Electrically Small Linear and Elliptical Polarized Spherical Dipole Antennas. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2005/03// VL - 53 IS - 3 M3 - Article SP - 1047 EP - 1053 SN - 0018926X AB - Electrically small antennas are generally presumed to exhibit high impedance mismatch (high VSWR), low efficiency, high quality factor (Q); and, therefore, narrow operating band- width. For an electric or magnetic dipole antenna, there is a fundamental lower bound for the quality factor that is determined as a function of the antenna's occupied physical volume. In this paper, the quality factor of a resonant, electrically small electric dipole is minimized by allowing the antenna geometry to utilize the occupied spherical volume to the greatest extent possible. A self-resonant, electrically small electric dipole antenna is presented that exhibits an impedance near 50 Ohms, an efficiency in excess of 95 % and a quality factor that is within 1.5 times the fundamental lower bound at a value of κα less than 0.27. Through an arrangement of the antenna's wire geometry, the electrically small dipole's polarization is converted from linear to elliptical (with an axial ratio of 3 dB), resulting in a further reduction in the quality factor. The elliptically polarized, electrically small antenna exhibits an impedance near 50 Ohms, an efficiency in excess of 95% and it has an omnidirectional, figure-eight radiation pattern. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIPOLE antennas KW - ANTENNAS (Electronics) KW - ELECTRONIC apparatus & appliances KW - MAGNETIC dipoles KW - DIPOLE moments KW - ELECTRIC impedance KW - Dipole antennas KW - electrically small antennas KW - helical antennas KW - Q factor N1 - Accession Number: 16403873; Best, Steven R. 1; Email Address: steven.best@comcast.net; Affiliation: 1: Air Force Research Laboratory (AFRL/SNHA) Hanscom AFB, MA 01731 USA.; Source Info: Mar2005, Vol. 53 Issue 3, p1047; Subject Term: DIPOLE antennas; Subject Term: ANTENNAS (Electronics); Subject Term: ELECTRONIC apparatus & appliances; Subject Term: MAGNETIC dipoles; Subject Term: DIPOLE moments; Subject Term: ELECTRIC impedance; Author-Supplied Keyword: Dipole antennas; Author-Supplied Keyword: electrically small antennas; Author-Supplied Keyword: helical antennas; Author-Supplied Keyword: Q factor; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TAP.2004.842600 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16403873&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eismann, Michael T. AU - Hardie, Russell C. T1 - Hyperspectral Resolution Enhancement Using High-Resolution Multispectral Imagery With Arbitrary Response Functions. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2005/03// VL - 43 IS - 3 M3 - Article SP - 455 EP - 465 SN - 01962892 AB - A maximum a posteriori (MAP) estimation method for improving the spatial resolution of a hyperspectral image using a higher resolution auxiliary image is extended to address several practical remote sensing situations. These include cases where: 1) the spectral response of the auxiliary image is unknown and does not match that of the hyperspectral image; 2) the auxiliary image is multispectral; and 3) the spatial point spread function for the hyperspectral sensor is arbitrary and extends beyond the span of the detector elements. The research presented follows a previously reported MAP approach that makes use of a stochastic mixing model (SMM) of the underlying spectral scene content to achieve resolution enhancement beyond the intensity component of the hyperspectral image. The mathematical formulation of a generalized form of the MAP/SMM estimate is described, and the enhancement algorithm is demonstrated using various image datasets. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REMOTE-sensing images KW - FREE-space optical technology KW - RESOLUTION (Optics) KW - IMAGING systems KW - DETECTORS KW - DATA analysis N1 - Accession Number: 16275033; Eismann, Michael T. 1; Email Address: michael.eismann@wpatb.af.mil Hardie, Russell C. 2; Email Address: rhardie@udayton.edu; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7700 USA. 2: Department of Electrical and Computer Engineering, University of Dayton, Dayton, OH 45459-0226 USA.; Source Info: Mar2005, Vol. 43 Issue 3, p455; Subject Term: REMOTE-sensing images; Subject Term: FREE-space optical technology; Subject Term: RESOLUTION (Optics); Subject Term: IMAGING systems; Subject Term: DETECTORS; Subject Term: DATA analysis; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TGRS.2004.837324 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16275033&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parthasarathy, Triplicane A. AU - Zawada, Larry P. AU - John, Reji AU - Cinibulk, Michael K. AU - Kerans, Ronald J. AU - Zelina, Joseph T1 - Evaluation of Oxide–Oxide Composites in a Novel Combustor Wall Application. JO - International Journal of Applied Ceramic Technology JF - International Journal of Applied Ceramic Technology Y1 - 2005/03// VL - 2 IS - 2 M3 - Article SP - 122 EP - 132 SN - 1546542X AB - Oxide–oxide composites were evaluated in a novel combustor design requiring higher wall temperatures than the conventional combustors. The evaluation was based on a combination of numerical modeling and experimental rig testing. The modeling included computational fluid dynamics (CFD) calculations whose results were used in a thermo-mechanical analysis using finite element modeling (FEM). The composites tested experimentally were obtained from a commercial vendor; they were reinforced using Nextel™ 720 fibers. The rig tests showed that aluminosilicate matrix composites with higher room temperature strengths suffered cracking while the weaker alumina matrix composites performed satisfactorily. The results were consistent with numerical models that predicted residual stresses from creep during service. The models showed that in-plane gradients and their effects were more severe than those of through-thickness gradients and suggest that tailoring fiber architecture is important in transitioning these composites to applications. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Applied Ceramic Technology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXIDE ceramics KW - COMBUSTION chambers KW - FIBER-reinforced ceramics KW - FLUID dynamics KW - ALUMINUM oxide N1 - Accession Number: 17168112; Parthasarathy, Triplicane A. 1; Email Address: Triplicane.Parthasarathy@wpafb.af.mil Zawada, Larry P. 1 John, Reji 1 Cinibulk, Michael K. 1 Kerans, Ronald J. 1 Zelina, Joseph 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLN, Wright-Patterson AFB, OH 45433-7817 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/PRTC, Wright-Patterson AFB, OH 45433-7817; Source Info: Mar2005, Vol. 2 Issue 2, p122; Subject Term: OXIDE ceramics; Subject Term: COMBUSTION chambers; Subject Term: FIBER-reinforced ceramics; Subject Term: FLUID dynamics; Subject Term: ALUMINUM oxide; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; NAICS/Industry Codes: 562210 Waste treatment and disposal; Number of Pages: 11p; Illustrations: 5 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1111/j.1744-7402.2005.02014.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17168112&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mattoni, Michael A. AU - Yang, James Y. AU - Levi, Carlos G. AU - Zok, Frank W. AU - Zawada, Larry P. T1 - Effects of Combustor Rig Exposure on a Porous-Matrix Oxide Composite. JO - International Journal of Applied Ceramic Technology JF - International Journal of Applied Ceramic Technology Y1 - 2005/03// VL - 2 IS - 2 M3 - Article SP - 133 EP - 140 SN - 1546542X AB - The present study explores the effects of exposure in a laboratory combustor on microstructural stability and property retention of an all-oxide fiber-reinforced ceramic composite. The material consists of a porous mullite–alumina matrix and Nextel 720 fibers in an eight-harness satin weave. To assess the effects of matrix strength, two matrix conditions are used, distinguished from one another by the amount of alumina added through precursor impregnation and pyrolysis (1.8% and 4.8%). In both cases, the dominant damage mode upon exposure involves interply delamination along the panel midplane. However, significant reductions in the rate and extent of cracking are obtained in the material with higher alumina content: a result of the higher delamination resistance. Mechanical tests performed on exposed specimens reveal a slight (10–20%) reduction in tensile strength along the fiber direction and a comparable increase in shear strength. These trends suggest some sintering of the matrix upon exposure. Examinations of fracture surfaces provide additional supporting evidence. Implications for long-term performance and strategies for imparting improvement in microstructural stability and delamination resistance are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Applied Ceramic Technology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMBUSTION chambers KW - OXIDE ceramics KW - CERAMICS KW - OXIDES KW - POROUS materials N1 - Accession Number: 17168111; Mattoni, Michael A. 1 Yang, James Y. 1 Levi, Carlos G. 1 Zok, Frank W. 1; Email Address: zok@engineering.ucsb.edu Zawada, Larry P. 2; Affiliation: 1: Materials Department, University of California, Santa Barbara, CA 93106-5050 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7817; Source Info: Mar2005, Vol. 2 Issue 2, p133; Subject Term: COMBUSTION chambers; Subject Term: OXIDE ceramics; Subject Term: CERAMICS; Subject Term: OXIDES; Subject Term: POROUS materials; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 562210 Waste treatment and disposal; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; Number of Pages: 8p; Illustrations: 3 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1111/j.1744-7402.2005.02015.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17168111&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tansel, I.N. AU - Bao, W.Y. AU - Reen, N.S. AU - Kropas-Hughes, C.V. T1 - Genetic tool monitor (GTM) for micro-end-milling operations JO - International Journal of Machine Tools & Manufacture JF - International Journal of Machine Tools & Manufacture Y1 - 2005/03// VL - 45 IS - 3 M3 - Article SP - 293 EP - 299 SN - 08906955 AB - Abstract: Almost all existing tool condition monitoring methods require either the critical parameters of models which are experimentally found or the self-learning algorithms that are trained with existing data. Genetic Tool Monitor (GTM) is proposed to identify the problems by using an analytical model for micro-end-milling operations and genetic algorithm. The current version of the GTM is capable to monitor the micro-end-milling operations without any previous experience and is able to estimate symmetrical wear and local damages at the cutting edges of a tool. Genetic algorithms (GA) are found as a promising health monitoring tool if an expression exists and the necessary computational time is allowable in that particular application. GTM generates meaningful information about the ongoing operation and allows the establishment of rules based on the operators'' experience. [Copyright &y& Elsevier] AB - Copyright of International Journal of Machine Tools & Manufacture is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMBINATORIAL optimization KW - ALGORITHMS KW - GENETIC algorithms KW - MANUFACTURING processes KW - End-milling KW - Genetic algorithms KW - Manufacturing applications KW - Micro machining KW - Process monitoring N1 - Accession Number: 15559832; Tansel, I.N. 1; Email Address: tanseli@eng.fiu.edu Bao, W.Y. 1 Reen, N.S. 1 Kropas-Hughes, C.V. 2; Affiliation: 1: Mechanical Engineering Department, Center for Engineering & Applied Science, Florida International University, 10555 West Flagler Street (EAS-3473), Miami, FL 33174, USA 2: Air Force Research Laboratory, AFPL/MLLP, Bldg. 655, R166, 2230 Tenth Street, Wright-Patterson AFB, OH 45433-7746, USA; Source Info: Mar2005, Vol. 45 Issue 3, p293; Subject Term: COMBINATORIAL optimization; Subject Term: ALGORITHMS; Subject Term: GENETIC algorithms; Subject Term: MANUFACTURING processes; Author-Supplied Keyword: End-milling; Author-Supplied Keyword: Genetic algorithms; Author-Supplied Keyword: Manufacturing applications; Author-Supplied Keyword: Micro machining; Author-Supplied Keyword: Process monitoring; NAICS/Industry Codes: 333994 Industrial Process Furnace and Oven Manufacturing; NAICS/Industry Codes: 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijmachtools.2004.08.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15559832&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Doren, Jane M. Van AU - Williams, Skip AU - Midey, Anthony J. AU - Miller, Thomas M. AU - Viggiano, A.A. T1 - Temperature dependence of the oxide ion/ozone reaction in the gas phase JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2005/03// VL - 241 IS - 2/3 M3 - Article SP - 185 EP - 188 SN - 13873806 AB - Abstract: Rate coefficient and branching fraction data were determined for the gas phase reaction of O-+O3 over the temperature range 123–500K using the temperature variable selected ion flow tube technique. The reaction rate coefficient is large and relatively insensitive to temperature; reaction takes place on every collision. In contrast, the product distributions are sensitive to temperature. Charge transfer is the major reactive pathway (≥67%) at all temperatures, and its importance increases with increasing temperature. Atom transfer, forming O2-+O2, constitutes approximately 33% of the products at 123K. The temperature dependence of the branching fraction explains an apparent discrepancy between product data from room temperature flow tube experiments and low energy beam experiments. A reaction mechanism is proposed to qualitatively explain the product branching fraction temperature dependence. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL kinetics KW - ELECTRONS KW - ION exchange (Chemistry) KW - OZONE KW - Ion-molecule KW - Kinetics KW - Ozone N1 - Accession Number: 19239766; Doren, Jane M. Van 1; Email Address: jvandore@holycross.edu Williams, Skip 2 Midey, Anthony J. 2 Miller, Thomas M. 2 Viggiano, A.A. 2; Affiliation: 1: Department of Chemistry, College of the Holy Cross, Worcester, MA 01610-2395, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts 01731-3010, USA; Source Info: Mar2005, Vol. 241 Issue 2/3, p185; Subject Term: CHEMICAL kinetics; Subject Term: ELECTRONS; Subject Term: ION exchange (Chemistry); Subject Term: OZONE; Author-Supplied Keyword: Ion-molecule; Author-Supplied Keyword: Kinetics; Author-Supplied Keyword: Ozone; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.ijms.2004.12.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19239766&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fernandez, Abel I. AU - Viggiano, A.A. AU - Maergoiz, A.I. AU - Troe, J. AU - Ushakov, V.G. T1 - Thermal decomposition of ethylbenzene cations (C8H10+): experiments and modeling of falloff curves JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2005/03// VL - 241 IS - 2/3 M3 - Article SP - 305 EP - 313 SN - 13873806 AB - Abstract: The kinetics of the pyrolysis of the ethylbenzene cation, C8H10+, has been studied in a turbulent ion flow tube (TIFT) from 623 to 673K and at pressures from 30 to 250Torr. The ions were prepared by the charge transfer reaction O2++C8H10→O2+C8H10+* followed by collisional stabilization and then by thermal decomposition in a nitrogen buffer gas. The thermal decomposition rate constants increased with temperature from about 15 to150s-1, but did not vary with pressure, indicating the results refer to the high pressure limit. The experimental activation energy, 157.8kJmol-1, is similar to the bond energy value, 168.3 (±1.2) kJmol-1, needed to model the data. Modeling of the system using a statistical adiabatic channel model/classical trajectory (SACM/CT) approach provided complete falloff curves for the dissociation and recombination of ethylbenzene. Similar modeling is also presented for the previously published data on n-propylbenzene cations. The temperature and pressure dependences of the rate coefficients for dissociation and recombination in the falloff range are represented in analytical form. The chosen format corresponds to that employed in data compilations for the corresponding neutral reaction systems. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ETHYLBENZENE KW - CATIONS KW - ELECTRONS KW - ION exchange (Chemistry) KW - C8H10+ KW - Falloff curves KW - Thermal decomposition KW - Turbulent ion flow tube N1 - Accession Number: 19239787; Fernandez, Abel I. 1 Viggiano, A.A. 1; Email Address: albert.viggiano@hanscom.af.mil Maergoiz, A.I. 2 Troe, J. 2 Ushakov, V.G. 2,3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Rd., Hanscom AFB, MA 01731-3010, USA 2: Institute for Physical Chemistry, University of Goettingen, Tammannstrasse 6, D-37077 Goettingen, Germany 3: Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia; Source Info: Mar2005, Vol. 241 Issue 2/3, p305; Subject Term: ETHYLBENZENE; Subject Term: CATIONS; Subject Term: ELECTRONS; Subject Term: ION exchange (Chemistry); Author-Supplied Keyword: C8H10+; Author-Supplied Keyword: Falloff curves; Author-Supplied Keyword: Thermal decomposition; Author-Supplied Keyword: Turbulent ion flow tube; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijms.2004.12.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19239787&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hansen, Frederick D. AU - Pitts, Donald T1 - SYSTEM SAFETY IN EARLY MANNED SPACE PROGRAM: A CASE STUDY OF NASA AND PROJECT MERCURY. JO - Journal of Air Transportation JF - Journal of Air Transportation Y1 - 2005/03// VL - 10 IS - 1 M3 - Article SP - 104 EP - 128 PB - University of Nebraska at Omaha SN - 15446980 AB - This case study provides a review of National Aeronautics and Space Administration's (NASA's) involvement in system safety during research and evolution from air breathing to exo-atmospheric capable flight systems culminating in the successful Project Mercury. Although NASA has been philosophically committed to the principals of system safety, this case study points out that budget and manpower constraints--as well as a variety of internal and external pressures--can jeopardize even a well-designed system safety program. This study begins with a review of the evolution and early years of NASA's rise as a project lead agency and ends with the lessons learned from Project Mercury. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Air Transportation is the property of University of Nebraska at Omaha and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERONAUTICS -- Safety measures KW - LABOR supply KW - AERONAUTICS -- United States KW - UNITED States KW - UNITED States. National Aeronautics & Space Administration KW - PROJECT Mercury (U.S.) N1 - Accession Number: 17265515; Hansen, Frederick D. 1 Pitts, Donald 2; Affiliation: 1: Oklahoma State University Tulsa, Oklahoma 2: United States Air Force Reserves; Source Info: 2005, Vol. 10 Issue 1, p104; Subject Term: AERONAUTICS -- Safety measures; Subject Term: LABOR supply; Subject Term: AERONAUTICS -- United States; Subject Term: UNITED States; Company/Entity: UNITED States. National Aeronautics & Space Administration Company/Entity: PROJECT Mercury (U.S.); NAICS/Industry Codes: 561320 Temporary Help Services; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 25p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17265515&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Millman, D. R. AU - King, P. I. AU - Beran, P. S. T1 - Airfoil Pitch-and-Plunge Bifurcation Behavior with Fourier Chaos Expansions. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2005/03//Mar/Apr2005 VL - 42 IS - 2 M3 - Article SP - 376 EP - 384 SN - 00218669 AB - A stochastic projection method is employed to obtain the probability distribution of pitch angle of an airfoil in pitch and plunge subject to probabilistic uncertainty in both the initial pitch angle and the cubic spring coefficient of the restoring pitch force. Historically, the selected basis for the stochastic projection method has been orthogonal polynomials, referred to as the polynomial chaos. Such polynomials, however, result in unacceptable computational expense for applications involving oscillatory motion, and a new basis, the Fourier chaos, is introduced for computing limit-cycle oscillations. Unlike the polynomial chaos expansions, which cannot predict limit-cycle oscillations, the Fourier chaos expansions predict both subcritical and supercritical responses even with low-order expansions and high-order nonlinearities. Bifurcation diagrams generated with this new approximate method compare well to Monte Carlo simulations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROFOILS KW - STOCHASTIC analysis KW - STOCHASTIC approximation KW - AIRPLANES -- Control surfaces KW - MODEL airplanes -- Wings KW - PROBABILITY theory N1 - Accession Number: 16848434; Millman, D. R. 1,2 King, P. I. 1,2 Beran, P. S. 3,4; Affiliation: 1: Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433 2: Senior Member, AIAA 3: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 4: Associate Fellow, AIAA; Source Info: Mar/Apr2005, Vol. 42 Issue 2, p376; Subject Term: AEROFOILS; Subject Term: STOCHASTIC analysis; Subject Term: STOCHASTIC approximation; Subject Term: AIRPLANES -- Control surfaces; Subject Term: MODEL airplanes -- Wings; Subject Term: PROBABILITY theory; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 9p; Illustrations: 2 Diagrams, 2 Charts, 9 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16848434&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucia, David J. AU - Beran, Philip S. AU - Silva, Walter A. T1 - Aeroelastic System Development Using Proper Orthogonal Decomposition and Volterra Theory. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2005/03//Mar/Apr2005 VL - 42 IS - 2 M3 - Article SP - 509 EP - 518 SN - 00218669 AB - Volterra theory and proper orthogonal decomposition are combined into a hybrid methodology for reduced-order modeling of aeroelastic systems. The outcome of the method is a set of linear ordinary differential equations describing the modal amplitudes associated with both the structural modes and the proper orthogonal decomposition basis functions for the fluid. The structural modes are sine waves of varying frequency, and the new approach is applied to the fluid dynamics equations. The structural modes are treated as forcing terms that are impulsed as part of the fluid model realization. By the use of this approach, structural and fluid operators are coupled into a single aeroelastic operator while the parameter (or parameters) of interest for sensitivity analysis are preserved. The approach is applied to an elastic panel in supersonic crossflow. The resulting aeroelastic model provides correct limit-cycle oscillation prediction over a wide range of panel dynamic pressure values. Time integration of the reduced-order aeroelastic model is four orders of magnitude faster than the high-order solution procedure developed by the use of traditional fluid and structural solvers. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VOLTERRA equations KW - FLUID dynamics KW - AERODYNAMICS KW - DECOMPOSITION method (Mathematics) KW - SYSTEM analysis N1 - Accession Number: 16848450; Lucia, David J. 1,2; Email Address: david.lucia@wpafb.af.mil Beran, Philip S. 1,3; Email Address: philip.beran@wpafb.af.mil Silva, Walter A. 4,5; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542 2: Member, AIAA 3: Associate Fellow, AIAA 4: NASA Langley Research Center, Hampton, Virginia 23681-0001 5: Senior Member, AIAA; Source Info: Mar/Apr2005, Vol. 42 Issue 2, p509; Subject Term: VOLTERRA equations; Subject Term: FLUID dynamics; Subject Term: AERODYNAMICS; Subject Term: DECOMPOSITION method (Mathematics); Subject Term: SYSTEM analysis; Number of Pages: 10p; Illustrations: 1 Diagram, 1 Chart, 6 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16848450&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Samuels, Steven AU - Casebeer, William T1 - A social psychological view of morality: why knowledge of situational influences on behaviour can improve character development practices. JO - Journal of Moral Education JF - Journal of Moral Education Y1 - 2005/03// VL - 34 IS - 1 M3 - Article SP - 73 EP - 87 PB - Routledge SN - 03057240 AB - Results from research in social psychology, such as findings about the fundamental attribution error and other situational influences on behaviour, are often used to justify attacking the existence of character traits. From this perspective, character development is an illusion, an impossibility, or both. We offer a different interpretation of how these issues interact with character development concerns. Rather than undermining the very idea of character traits, social psychology actually sheds light on the manner in which character development can occur. It reaffirms Spinozistic and Aristotelian points about character, namely that: (1) knowledge of the fundamental attribution error can help us minimize the influence environment and situation have on our behaviour, and (2) proper habituation only takes place in appropriately structured environments. Acknowledging these important results from social psychology helps us improve some of our character education practices rather than destroying their basis. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Moral Education is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOCIAL psychology KW - HUMAN ecology KW - SOCIAL groups KW - SOCIAL interaction KW - MORAL education KW - CHARACTERS & characteristics N1 - Accession Number: 16710935; Samuels, Steven 1; Email Address: Steven.Samuels@usafa.af.mil Casebeer, William 1; Affiliation: 1: United States Air Force Academy, USA.; Source Info: Mar2005, Vol. 34 Issue 1, p73; Subject Term: SOCIAL psychology; Subject Term: HUMAN ecology; Subject Term: SOCIAL groups; Subject Term: SOCIAL interaction; Subject Term: MORAL education; Subject Term: CHARACTERS & characteristics; Number of Pages: 15p; Document Type: Article L3 - 10.1080/03057240500049349 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16710935&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sun, G. AU - Soref, Richard A. AU - Khurgin, Jacob B. T1 - A comparative study of InAs quantum dot lasers with barriers of direct and indirect band gaps JO - Microelectronics Journal JF - Microelectronics Journal Y1 - 2005/03// VL - 36 IS - 3-6 M3 - Article SP - 183 EP - 185 SN - 00262692 AB - Abstract: We propose the idea of making quantum dot (QD) lasers by embedding direct-bandgap QDs in a short-period superlattice whose bandgap is indirect. In comparison with similar QD lasers with barriers of direct band gap, this technique not only reduces the temperature dependence of threshold current, but also leads to extremely small linewidth enhancement factor, making low-temperature sensitivity, low chirp, and narrow linewidth semiconductor lasers feasible. [Copyright &y& Elsevier] AB - Copyright of Microelectronics Journal is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM dots KW - LASERS KW - NONLINEAR optics KW - OPTOELECTRONIC devices KW - Indirect short-period superlattice KW - Indium arsenide KW - Linewidth enhancement factor KW - Quantum dot laser N1 - Accession Number: 17812879; Sun, G. 1; Email Address: greg.sun@umb.edu Soref, Richard A. 2 Khurgin, Jacob B. 3; Affiliation: 1: Department of Physics, University of Massachusetts at Boston, Boston, MA 02125, USA 2: Sensors Directorate, Air Force Research Laboratory, Hanscom Air Force Base, MA 01731, USA 3: Department of Electrical and Computer Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA; Source Info: Mar2005, Vol. 36 Issue 3-6, p183; Subject Term: QUANTUM dots; Subject Term: LASERS; Subject Term: NONLINEAR optics; Subject Term: OPTOELECTRONIC devices; Author-Supplied Keyword: Indirect short-period superlattice; Author-Supplied Keyword: Indium arsenide; Author-Supplied Keyword: Linewidth enhancement factor; Author-Supplied Keyword: Quantum dot laser; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.mejo.2005.02.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17812879&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brown, G.J. AU - Szmulowicz, F. AU - Haugan, H. AU - Mahalingam, K. AU - Houston, S. T1 - Design of InAs/Ga(In)Sb superlattices for infrared sensing JO - Microelectronics Journal JF - Microelectronics Journal Y1 - 2005/03// VL - 36 IS - 3-6 M3 - Article SP - 256 EP - 259 SN - 00262692 AB - Abstract: New infrared detector materials with high sensitivity, multi-spectral capability, improved uniformity and lower manufacturing costs are required for numerous infrared sensing applications. One material system has shown great theoretical and experimental promise for these applications: InAs/In x Ga1−x Sb type-II superlattices. These superlattices offer a large design space for adjusting not only the energy band gap of the material but also the band structure. The infrared properties of several sets of designs of InAs/GaSb superlattices were studied. These designs covered the mid-infrared spectral band from 3 to 6μm. Optimization design rules were explored. The infrared photoresponse spectra, combined with 8×8 k·p envelope function approximation modeling of superlattice band gaps and absorption spectra, provide insight into the underlying physics behind the optimized design of these materials. [Copyright &y& Elsevier] AB - Copyright of Microelectronics Journal is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DETECTORS KW - INFRARED equipment KW - SPECTRUM analysis KW - PHYSICS instruments KW - Detectors KW - InAs/GaSb KW - Infrared KW - Superlattice N1 - Accession Number: 17812900; Brown, G.J.; Email Address: gail.brown@wpafb.af.mil Szmulowicz, F. 1 Haugan, H. 1 Mahalingam, K. 1 Houston, S. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLPS, 3005 Hobson Way, Wright Patterson AFB, OH 45433-7707, USA; Source Info: Mar2005, Vol. 36 Issue 3-6, p256; Subject Term: DETECTORS; Subject Term: INFRARED equipment; Subject Term: SPECTRUM analysis; Subject Term: PHYSICS instruments; Author-Supplied Keyword: Detectors; Author-Supplied Keyword: InAs/GaSb; Author-Supplied Keyword: Infrared; Author-Supplied Keyword: Superlattice; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.mejo.2005.02.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17812900&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sun, G. AU - Soref, Richard A. T1 - Design and simulation of a GaN/AlGaN quantum cascade laser for terahertz emission JO - Microelectronics Journal JF - Microelectronics Journal Y1 - 2005/03// VL - 36 IS - 3-6 M3 - Article SP - 450 EP - 452 SN - 00262692 AB - Abstract: Our study indicates that there are significant advantages in developing THz quantum cascade lasers (QCLs) with GaN-based quantum well (QW) structures. While the ultrafast longitudinal optical (LO) phonon scattering in AlGaN/GaN QWs can be used for the rapid depopulation of the lower laser state, the large LO-phonon energy (∼90meV) can effectively reduce the thermal population of the lasing states. Our investigation shows that GaN-based THz QCLs can potentially be operating cw at room temperature. [Copyright &y& Elsevier] AB - Copyright of Microelectronics Journal is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - NONLINEAR optics KW - OPTOELECTRONIC devices KW - LIGHT sources KW - Gallium nitride KW - Quantum cascade laser KW - Quantum wells KW - Terahertz emission N1 - Accession Number: 17812951; Sun, G. 1; Email Address: greg.sun@umb.edu Soref, Richard A. 2; Affiliation: 1: Department of Physics, University of Massachusetts at Boston, Boston, MA 02125, USA 2: Sensors Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Bedford, MA 01731, USA; Source Info: Mar2005, Vol. 36 Issue 3-6, p450; Subject Term: LASERS; Subject Term: NONLINEAR optics; Subject Term: OPTOELECTRONIC devices; Subject Term: LIGHT sources; Author-Supplied Keyword: Gallium nitride; Author-Supplied Keyword: Quantum cascade laser; Author-Supplied Keyword: Quantum wells; Author-Supplied Keyword: Terahertz emission; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.mejo.2005.02.044 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17812951&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kingman, Albert AU - Albers, James W. AU - Arezzo, Joseph C. AU - Garabrant, David H. AU - Michalek, Joel E. T1 - Amalgam Exposure And Neurological Function JO - NeuroToxicology JF - NeuroToxicology Y1 - 2005/03// VL - 26 IS - 2 M3 - Article SP - 241 EP - 255 SN - 0161813X AB - Abstract: Concerns regarding the safety of silver–mercury amalgam fillings continue to be raised in the absence of any direct evidence of harm. The widespread population exposure to amalgam mandated that a thorough investigation be conducted of its potential effects on the nervous system. The National Institute of Dental and Craniofacial Research and U.S. Air Force investigators collaborated in the ongoing Air Force Health Study (AFHS) of Vietnam era veterans. The primary study question involved adverse health effects associated with exposure to herbicides or dioxin. An assessment of exposure to dental amalgam fillings was added to the 1997–1998 health examination to investigate possible associations between amalgam exposure and neurological abnormalities. Our study population consisted of 1663 dentate AFHS participants, comprised of 986 AFHS controls and 677 Ranch Hand veterans who were exposed to dioxin in Vietnam. Two hundred and fifty-two of the participants had confirmed diabetes mellitus. Study outcomes included clinical neurological signs, vibrotactile thresholds, and summary variables for different levels of peripheral neuropathy. A limitation of our study is that our database did not include more sensitive continuous measures such as nerve conduction studies. No significant associations were found between amalgam exposure and clinical neurological signs of abnormal tremor, coordination, station or gait, strength, sensation, or muscle stretch reflexes or for any level of peripheral neuropathy among our study participants. A statistically significant association was detected between amalgam exposure and the continuous vibrotactile sensation response for the combined non-diabetic participants and separately for non-diabetic AFHS controls. No significant association in this measure was detectable for non-diabetic Ranch Hand veterans or among the combined diabetic participants. The association is a sub-clinical finding that was not associated with symptoms, clinically evident signs of neuropathy, or any functional impairment. Overall, we found no association between amalgam exposure and neurological signs or clinically evident peripheral neuropathy. Our findings do not support the hypothesis that exposure to amalgam produces adverse, clinically evident neurological effects. [Copyright &y& Elsevier] AB - Copyright of NeuroToxicology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AMALGAMS (Alloys) KW - MERCURY KW - LIQUID metals KW - HERBICIDES KW - DIOXINS KW - ASSOCIATIONS, institutions, etc. KW - Amalgam exposure KW - Epidemiology KW - Mercury KW - Neurological signs KW - Peripheral neuropathy N1 - Accession Number: 16392580; Kingman, Albert 1; Email Address: Albert.Kingman@nih.gov Albers, James W. 2 Arezzo, Joseph C. 3 Garabrant, David H. 4 Michalek, Joel E. 5; Affiliation: 1: Division of Clinical Research and Health Promotion, National Institute of Dental and Craniofacial Research, National Institutes of Health, 45 Center Drive, Room 4As-25U, Bethesda, MD 20892-6401, USA 2: Department of Neurology, University of Michigan Medical School, Ann Arbor, MI, USA 3: Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA 4: Departments of Environmental Health Sciences and Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA 5: Air Force Research Laboratory, San Antonio, TX, USA; Source Info: Mar2005, Vol. 26 Issue 2, p241; Subject Term: AMALGAMS (Alloys); Subject Term: MERCURY; Subject Term: LIQUID metals; Subject Term: HERBICIDES; Subject Term: DIOXINS; Subject Term: ASSOCIATIONS, institutions, etc.; Author-Supplied Keyword: Amalgam exposure; Author-Supplied Keyword: Epidemiology; Author-Supplied Keyword: Mercury; Author-Supplied Keyword: Neurological signs; Author-Supplied Keyword: Peripheral neuropathy; NAICS/Industry Codes: 813990 Other Similar Organizations (except Business, Professional, Labor, and Political Organizations); NAICS/Industry Codes: 418390 Agricultural chemical and other farm supplies merchant wholesalers; NAICS/Industry Codes: 325320 Pesticide and Other Agricultural Chemical Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.neuro.2004.09.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16392580&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - PERLOVSKY, LEONID AU - DEMING, ROSS T1 - A MATHEMATICAL THEORY FOR LEARNING, AND ITS APPLICATION TO TIME-VARYING COMPUTED TOMOGRAPHY. JO - New Mathematics & Natural Computation JF - New Mathematics & Natural Computation Y1 - 2005/03// VL - 1 IS - 1 M3 - Article SP - 147 EP - 171 SN - 17930057 AB - The brain has evolved to enable organisms to survive in a complicated and dynamic world. Its operation is based upon a priori models of the environment which are adapted, during learning, in response to new and changing stimuli. The same qualities that make biological learning mechanisms ideal for organisms make their underlying mathematical algorithms ideal for certain technological applications, especially those concerned with understanding the physical processes giving rise to complicated data sets. In this paper, we offer a mathematical model for the underlying mechanisms of biological learning, and we show how this mathematical approach to learning can yield a solution to the problem of imaging time-varying objects from X-ray computed tomographic (CT) data. This problem relates to several practical aspects of CT imaging including the correction of motion artifacts caused by patient movement or breathing. [ABSTRACT FROM AUTHOR] AB - Copyright of New Mathematics & Natural Computation is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TOMOGRAPHY KW - ALGORITHMS KW - MEDICAL radiography KW - MATHEMATICAL models KW - MATHEMATICS KW - computed tomography KW - expectation maximization KW - intelligence KW - learning KW - log-likelihood KW - Mind KW - mixture model KW - relative entropy N1 - Accession Number: 21871956; PERLOVSKY, LEONID 1; Email Address: leonid.perlovsky@hanscom.af.mil DEMING, ROSS 2; Email Address: ross.deming@hanscom.af.mil; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, 80 Scott Drive, Hanscom AFB, MA 01731 2: Anteon Corporation, Air Force Research Laboratory, Sensors Directorate, 80 Scott Drive, Hanscom AFB, MA 01731; Source Info: Mar2005, Vol. 1 Issue 1, p147; Subject Term: TOMOGRAPHY; Subject Term: ALGORITHMS; Subject Term: MEDICAL radiography; Subject Term: MATHEMATICAL models; Subject Term: MATHEMATICS; Author-Supplied Keyword: computed tomography; Author-Supplied Keyword: expectation maximization; Author-Supplied Keyword: intelligence; Author-Supplied Keyword: learning; Author-Supplied Keyword: log-likelihood; Author-Supplied Keyword: Mind; Author-Supplied Keyword: mixture model; Author-Supplied Keyword: relative entropy; NAICS/Industry Codes: 621512 Diagnostic Imaging Centers; Number of Pages: 25p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21871956&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roblyer, Dwight A. T1 - Beyond Precision: Morality, Decision Making, and Collateral Casualties. JO - Peace & Conflict JF - Peace & Conflict Y1 - 2005/03// VL - 11 IS - 1 M3 - Article SP - 17 EP - 39 SN - 10781919 AB - The author of this article examines the moral aspects of the military's procedures to minimize unintentional civilian deaths and injuries resulting from attacks from the air. His intent is to investigate the institutional settings within which individuals make very difficult decisions under very difficult conditions and to offer recommendations. The author also assumes that the persons negatively affected by an incident of collateral casualties or damage are innocent civilian noncombatants, hereafter referred to as civilians or innocents. KW - CIVILIAN war casualties KW - WAR casualties KW - WAR victims KW - WAR & ethics KW - WAR -- Psychological aspects KW - MILITARY ethics N1 - Accession Number: 17187667; Roblyer, Dwight A. 1; Email Address: Dwight.Roblyer@PETERSON.af.mil; Affiliation: 1: United States Air Force, 2002-2003 National Defense Fellow , Program in Arms Control, Disarmament, and International Security , University of Illinois, Urbana-Champaign; Source Info: 2005, Vol. 11 Issue 1, p17; Subject Term: CIVILIAN war casualties; Subject Term: WAR casualties; Subject Term: WAR victims; Subject Term: WAR & ethics; Subject Term: WAR -- Psychological aspects; Subject Term: MILITARY ethics; Number of Pages: 23p; Document Type: Article L3 - 10.1207/s15327949pac1101_3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17187667&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Foster, Craig.A. AU - Campbell, W.Keith T1 - The adversity of secret relationships. JO - Personal Relationships JF - Personal Relationships Y1 - 2005/03// VL - 12 IS - 1 M3 - Article SP - 125 EP - 143 PB - Wiley-Blackwell SN - 13504126 AB - Are secret romantic relationships alluring or aversive? Previous research suggests that romantic secrecy (i.e., keeping a romantic relationship secret from others) creates a cognitive preoccupation that enhances romantic attraction. In contrast, we predicted that romantic secrecy interferes with relationship interdependence and thereby decreases relationship quality. Three studies of secrecy in ongoing romantic relationships confirmed this prediction. In Study 1, romantic secrecy predicted lower levels of initial relationship quality and decreased relationship quality over a 2-week period. In Study 2, relationship burden mediated partially the negative association between romantic secrecy and relationship quality. In Study 3, the negative association between romantic secrecy and relationship quality was primarily explained by decreased relationship satisfaction. The importance of understanding romantic secrecy is discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Personal Relationships is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERPERSONAL relations KW - COUPLES KW - SOCIAL psychology KW - SOCIAL interaction KW - SECRET friends KW - INTERPERSONAL attraction N1 - Accession Number: 15840290; Foster, Craig.A. 1; Email Address: craig.foster@usafa.af.mil Campbell, W.Keith 2; Affiliation: 1: United States Air Force Academy 2: University of Georgia; Source Info: Mar2005, Vol. 12 Issue 1, p125; Subject Term: INTERPERSONAL relations; Subject Term: COUPLES; Subject Term: SOCIAL psychology; Subject Term: SOCIAL interaction; Subject Term: SECRET friends; Subject Term: INTERPERSONAL attraction; Number of Pages: 19p; Illustrations: 7 Charts; Document Type: Article L3 - 10.1111/j.1350-4126.2005.00105.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15840290&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, L.B. AU - Price, M.B. AU - Young, J.L. AU - Kwon, C. AU - Levin, George A. AU - Haugan, Timothy J. AU - Barnes, Paul N. T1 - Mapping the current distribution in YBa2Cu3O7−x thin films with striations JO - Physica C JF - Physica C Y1 - 2005/03// VL - 419 IS - 3/4 M3 - Article SP - 79 EP - 84 SN - 09214534 AB - Abstract: We have studied the transport current distributions in striated YBa2Cu3O7−x (YBCO) films and coated conductors using variable temperature scanning laser microscopy (VTSLM). VTSLM images reveal the location of incomplete separation between filaments due to un-optimized sample processing parameters. When the current flows parallel to the completely separated striations, the current seems to flow within a strip without inter-mixing via the substrate. Initial resistivity measurements on metallic inter-filamentary connections (gold dots) exhibit a semiconducting behavior. VTSLM images clearly show that the current flows between filaments via the metallic inter-connect, indicating the semiconducting resistive behavior is due to the interface between YBCO and metallic layer. The results demonstrate the potential of VTSLM technique in investigating current sharing and normal metal inter-connect issues for the coated conductor development for ac applications. [Copyright &y& Elsevier] AB - Copyright of Physica C is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - MICROSCOPY KW - SUPERCONDUCTORS KW - MATHEMATICAL optimization KW - Ac loss KW - Current distribution KW - Striated YBCO film KW - Variable temperature scanning laser microscopy N1 - Accession Number: 17427403; Wang, L.B. 1 Price, M.B. 1 Young, J.L. 1 Kwon, C. 1; Email Address: ckwon@csulb.edu Levin, George A. 2 Haugan, Timothy J. 2 Barnes, Paul N. 2; Affiliation: 1: Department of Physics and Astronomy, California State University Long Beach, 1250 Bellflower Boulevard, Long Beach, CA 90840, United States 2: Air Force Research Laboratory, 2645 Fifth Street, Wright-Patterson AFB, OH 45433-7919, United States; Source Info: Mar2005, Vol. 419 Issue 3/4, p79; Subject Term: THIN films; Subject Term: MICROSCOPY; Subject Term: SUPERCONDUCTORS; Subject Term: MATHEMATICAL optimization; Author-Supplied Keyword: Ac loss; Author-Supplied Keyword: Current distribution; Author-Supplied Keyword: Striated YBCO film; Author-Supplied Keyword: Variable temperature scanning laser microscopy; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.physc.2004.12.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17427403&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Weisner, Andrew J. AU - Cooper, Thomas M. AU - Turnbull, Kenneth T1 - Routes to Sydnone-Containing Oligomeric Areneynes. JO - Synthetic Communications JF - Synthetic Communications Y1 - 2005/03// VL - 35 IS - 5 M3 - Article SP - 639 EP - 651 PB - Taylor & Francis Ltd SN - 00397911 AB - Iterative Sonogashira-coupling routes have been used to prepare sydnone-containing areneynes 1-3 (and related compounds) from o-iodophenylsydnone (4). The best results were obtained by using two- and three-reaction-in-one-pot protocols. [ABSTRACT FROM AUTHOR] AB - Copyright of Synthetic Communications is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALKYNES KW - HYDROCARBONS KW - ALKENES KW - ORGANIC synthesis (Chemistry) KW - OPTICAL materials KW - Alkynes KW - Sonogashira coupling KW - sydnones N1 - Accession Number: 16771185; Weisner, Andrew J. 1 Cooper, Thomas M. 2 Turnbull, Kenneth 1; Email Address: kenneth.turnbull@wright.edu; Affiliation: 1: Chemistry Department, Wright State University, Dayton, Ohio, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio, USA; Source Info: 2005, Vol. 35 Issue 5, p639; Subject Term: ALKYNES; Subject Term: HYDROCARBONS; Subject Term: ALKENES; Subject Term: ORGANIC synthesis (Chemistry); Subject Term: OPTICAL materials; Author-Supplied Keyword: Alkynes; Author-Supplied Keyword: Sonogashira coupling; Author-Supplied Keyword: sydnones; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 13p; Illustrations: 4 Diagrams; Document Type: Article L3 - 10.1081/SCC-200050343 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16771185&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wei, Y. AU - Hood, A. AU - Yau, H. AU - Yazdanpanah, V. AU - Razeghi, M. AU - Tidrow, M. Z. AU - Nathan, V. T1 - High-performance type-II InAs/GaSb superlattice photodiodes with cutoff wavelength around 7 μm. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/02/28/ VL - 86 IS - 9 M3 - Article SP - 091109 PB - American Institute of Physics SN - 00036951 AB - We report the most recent result in the area of type-II InAs/GaSb superlattice photodiodes that have a cutoff wavelength around 7 μm at 77 K. Superlattice with a period of 40 Å lattice matched to GaSb was realized using GaxIn1-x type interface engineering technique. Compared with significantly longer period superlattices, we have reduced the dark current density under reverse bias dramatically. For a 3 μm thick structure, using sulfide-based passivation, the dark current density reached 2.6×10-5 A/cm2 at -3 V reverse bias at 77 K. At this temperature the photodiodes have R0A of 9300 Ω cm2 and a thermally limited zero bias detectivity of 1×1012 cm Hz1/2/W. The 90%–10% cutoff energy width was only 16.5 meV. The devices did not show significant dark current change at 77 K after three months storage in the atmosphere. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTODIODES KW - SUPERLATTICES KW - HETEROSTRUCTURES KW - SEMICONDUCTOR diodes KW - ENGINEERING KW - SEMICONDUCTORS N1 - Accession Number: 16581419; Wei, Y. 1 Hood, A. 1 Yau, H. 1 Yazdanpanah, V. 1 Razeghi, M. 1; Email Address: razeghi@ece.northwestern.edu Tidrow, M. Z. 2 Nathan, V. 3; Affiliation: 1: Center for Quantum Devices, Department of Electrical and Computer Engineering, Northwestern University, Evanston, Illinois 60208 2: Missile Defense Agency, 7100 Defense Pentagon, Washington, DC 20301 3: Air Force Research Laboratory/VSSS, Kirtland AFB, New Mexico 87117.; Source Info: 2/28/2005, Vol. 86 Issue 9, p091109; Subject Term: PHOTODIODES; Subject Term: SUPERLATTICES; Subject Term: HETEROSTRUCTURES; Subject Term: SEMICONDUCTOR diodes; Subject Term: ENGINEERING; Subject Term: SEMICONDUCTORS; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.1879113 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16581419&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O.N. AU - Senkova, S.V. AU - Scott, J.M. AU - Miracle, D.B. T1 - Compaction of amorphous aluminum alloy powder by direct extrusion and equal channel angular extrusion JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2005/02/25/ VL - 393 IS - 1/2 M3 - Article SP - 12 EP - 21 SN - 09215093 AB - Abstract: Al89Gd7Ni3Fe1 alloy powder produced by gas atomization was consolidated using equal channel angular extrusion (ECAE) and direct extrusion. The powder particle size was below 30μm and the as-received powder was ∼70–80% amorphous. ECAE compaction of loose powder was conducted at 200°C. The microstructure of the compacted material was studied after different levels of ECAE deformation, which allowed analysis of the mechanism of particle interactions, deformation and bonding during different stages of consolidation. Direct extrusion compaction was conducted at 210, 250, 400, and 450°C. After compaction at 210°C, the material was about 70% amorphous and it had 98–99% of the theoretical density. A fully dense alloy with a nanocrystalline structure (grain size∼700nm) was produced after extrusion at 450°C. Extrusion at 250 and 400°C led to poor consolidation of the powder due to formation of brittle intermetallic phases with volume fraction of about 40%. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM alloys KW - COMPACTING KW - MICROMECHANICS KW - MATERIALS -- Analysis KW - Amorphous Al alloy powder KW - Consolidation KW - Direct extrusion KW - Equal channel angular extrusion KW - Extrusion KW - Mechanical properties KW - Microstructure N1 - Accession Number: 16290648; Senkov, O.N. 1; Email Address: oleg.senkov@wpafb.af.mil Senkova, S.V. 1 Scott, J.M. 1 Miracle, D.B. 2; Affiliation: 1: UES Inc., 4401 Dayton-Xenia Rd., Dayton, Ohio, OH 45432, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio, OH 45433, USA; Source Info: Feb2005, Vol. 393 Issue 1/2, p12; Subject Term: ALUMINUM alloys; Subject Term: COMPACTING; Subject Term: MICROMECHANICS; Subject Term: MATERIALS -- Analysis; Author-Supplied Keyword: Amorphous Al alloy powder; Author-Supplied Keyword: Consolidation; Author-Supplied Keyword: Direct extrusion; Author-Supplied Keyword: Equal channel angular extrusion; Author-Supplied Keyword: Extrusion; Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Microstructure; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.msea.2004.09.061 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16290648&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bliss, David AU - Vladimir Tassev AU - Weyburne, David AU - Chris Santeufemio AU - Michael Suscavage AU - Fait, Mitchell AU - Qi Wang, Sheng AU - Bailey, John AU - Yapp, Calvin AU - Kanjolia, Ravi AU - Anthis, Jeffrey AU - Nguyen, Nam AU - Smith, Lesley AU - Odedra, Raj T1 - Growth of thick-film AlN substrates by halide vapor transport epitaxy JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2005/02/15/ VL - 275 IS - 1/2 M3 - Article SP - e1307 EP - e1311 SN - 00220248 AB - Abstract: The development and scaling-up of a process for the growth of large diameter aluminum nitride thick films on 2-in sapphire is described. Optimal growth rates between 10 and m/h have been reached by adjustment of the reactor pressure, substrate temperature and gas flows. The layer thickness is determined by in situ laser reflection from the layer surface and ex situ by the curve of reflectivity versus wavelength after growth. The crystal quality is demonstrated by in situ laser reflection, scanning electron microscopy (cross sectional images and thickness) and atomic force microscopy (average roughness before and after polishing in the ranges of 20–50 and 3–8nm, respectively). [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THICK films KW - ELECTRON microscopy KW - ELECTRON microscopic diagnosis KW - SURFACE coatings KW - A1. Characterization KW - A1. Substrates KW - A3. Vapor-phase epitaxy KW - B2. Semiconducting III–V Materials N1 - Accession Number: 17645726; Bliss, David 1; Email Address: david.bliss@hanscom.af.mil Vladimir Tassev 2 Weyburne, David 1 Chris Santeufemio 1 Michael Suscavage 1 Fait, Mitchell 1 Qi Wang, Sheng 2 Bailey, John 2 Yapp, Calvin 2 Kanjolia, Ravi 3 Anthis, Jeffrey 3 Nguyen, Nam 3 Smith, Lesley 4 Odedra, Raj 4; Affiliation: 1: Air Force Research Laboratory, 80 Scott Drive, Hanscom AFB, MA 01731, USA 2: Solid State Scientific Corporation, 27-2 Wright Road, Hollis, NH 03049, USA 3: Epichem, Inc. 1429 Hilldale Avenue, Haverhill MA 01832, USA 4: Epichem, Ltd. Power Road, Bromborough, Wirral, CH623QF, UK; Source Info: Feb2005, Vol. 275 Issue 1/2, pe1307; Subject Term: THICK films; Subject Term: ELECTRON microscopy; Subject Term: ELECTRON microscopic diagnosis; Subject Term: SURFACE coatings; Author-Supplied Keyword: A1. Characterization; Author-Supplied Keyword: A1. Substrates; Author-Supplied Keyword: A3. Vapor-phase epitaxy; Author-Supplied Keyword: B2. Semiconducting III–V Materials; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 0p; Document Type: Article L3 - 10.1016/j.jcrysgro.2004.11.108 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17645726&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Levin, G. A. AU - Barnes, P. N. AU - Amemiya, N. AU - Kasai, S. AU - Yoda, K. AU - Jiang, Z. T1 - Magnetization losses in multifilament coated superconductors. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/02/14/ VL - 86 IS - 7 M3 - Article SP - 072509 PB - American Institute of Physics SN - 00036951 AB - We report the results of a study of the magnetization losses in experimental multifilament, as well as control (uniform) coated superconductors exposed to time-varying magnetic fields of various frequencies. Both the hysteresis loss, proportional to the sweep rate of the applied magnetic field, and the coupling loss, proportional to the square of the sweep rate, have been observed. A scaling is found that allows us to quantify each of these contributions and extrapolate the results of the experiment beyond the envelope of accessible field amplitude and frequency. The combined loss in the multifilament conductor is reduced by about 90% in comparison with the uniform conductor at full field penetration at a sweep rate as high as 3 T/s. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIZATION KW - FERROMAGNETISM KW - SUPERCONDUCTORS KW - CRYOELECTRONICS KW - ELECTRONIC materials KW - SOLID state electronics N1 - Accession Number: 16581233; Levin, G. A. 1; Email Address: george.levin@wpafb.af.mil Barnes, P. N. 1 Amemiya, N. 2 Kasai, S. 2 Yoda, K. 2 Jiang, Z. 2; Affiliation: 1: Air Force Research Laboratory, Propulsion Directorate, 1950 Fifth Street, Bldg. 450, Wright-Patterson Air Force Base, Ohio 45433 2: Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya, Yokohama 240-8501, Japan; Source Info: 2/14/2005, Vol. 86 Issue 7, p072509; Subject Term: MAGNETIZATION; Subject Term: FERROMAGNETISM; Subject Term: SUPERCONDUCTORS; Subject Term: CRYOELECTRONICS; Subject Term: ELECTRONIC materials; Subject Term: SOLID state electronics; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.1861955 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16581233&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baek, Jong-Beom AU - Park, Soo-Young AU - Price, Gary E. AU - Lyons, Christopher B. AU - Tan, Loon-Seng T1 - Unusual thermal relaxation of viscosity-and-shear-induced strain in poly(ether-ketones) synthesized in highly viscous polyphosphoric acid/P2O5 medium JO - Polymer JF - Polymer Y1 - 2005/02/14/ VL - 46 IS - 5 M3 - Article SP - 1543 EP - 1552 SN - 00323861 AB - Abstract: We recently described an improved method to synthesize poly(ether-ketones) or PEKs. It utilized an optimized mixture of polyphosphoric acid (PPA) and P2O5 that is not only milder, less corrosive and less expensive than super-acid media, but also can play the multiple roles of solvent, Friedel–Crafts catalyst and dehydrating agent. The as-prepared PEKs from such a highly viscous reaction medium displayed unexpected, thermally induced relaxation exotherms regardless of the amorphous or semi-crystalline nature of polymer. This thermal behavior was not observed for the formally identical polymers [viz. pPEK or poly(oxy-1,4-phenylenecarbonyl-1,4-phenylene] which is normally semi-crystalline) that were separately prepared in a much less viscous mixture of methanesulfonic acid and P2O5 (Eaton''s reagent) or N-methyl-2-pyrrolidinone (NMP). Such an observation was first made when both samples of pPEKs were subjected to the same thermal history and the thermal relaxation exotherms were observed only for the pPEK sample that was prepared in PPA/P2O5 medium. Further confirmation of viscosity-and-shear-induced strain stored in the as-synthesized PEKs was provided by a systematic annealing study with differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD) analysis and Fourier-transform infrared spectroscopy (FT-IR). Based on these data, pPEK was successfully compression-molded in the temperature range of 230–250°C which is more than 100°C below its melting temperature. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYETHERS KW - ETHERS KW - POLYMERS KW - KETONES KW - ORGANIC compounds KW - PHOSPHORIC acid KW - Friedel–Crafts acylation KW - Thermal analysis KW - Wide-angle X-ray diffraction N1 - Accession Number: 16204152; Baek, Jong-Beom 1,2; Email Address: jbbaek@chungbuk.ac.kr Park, Soo-Young 3 Price, Gary E. 2 Lyons, Christopher B. 4 Tan, Loon-Seng 5; Email Address: loon-seng.tan@wpafb.af.mil; Affiliation: 1: School of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 361-763, South Korea 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0168, USA 3: Department of Polymer Science, Kyungbuk National University, Taegu 702-701, South Korea 4: Southwestern Ohio Council for Higher Education, 3155 Research Boulevard, Suite 204, Dayton, OH 45420-4015, USA 5: Polymer Branch, Materials and Manufacturing Directorate, AFRL/MLBP, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433-7750, USA; Source Info: Feb2005, Vol. 46 Issue 5, p1543; Subject Term: POLYETHERS; Subject Term: ETHERS; Subject Term: POLYMERS; Subject Term: KETONES; Subject Term: ORGANIC compounds; Subject Term: PHOSPHORIC acid; Author-Supplied Keyword: Friedel–Crafts acylation; Author-Supplied Keyword: Thermal analysis; Author-Supplied Keyword: Wide-angle X-ray diffraction; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325312 Phosphatic Fertilizer Manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.polymer.2004.12.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16204152&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cooper AU - T. M. AU - Hall AU - B. C. AU - McLean AU - D. G. AU - Rogers AU - J. E. AU - Burke AU - A. R. AU - Turnbull AU - K. AU - Weisner AU - A. AU - Fratini AU - Liu AU - Y. AU - Schanze AU - K. S. T1 - Structure−Optical Property Relationships in Organometallic Sydnones. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2005/02/10/ VL - 109 IS - 6 M3 - Article SP - 999 EP - 1007 SN - 10895639 AB - As part of an effort to develop a spectroscopic structure−property relationship in platinum acetylide oligomers, we have prepared a series of mesoionic bidentate Pt(PBu3)2L2 compounds containing sydnone groups. The ligand is the series o-Syd-(C6H4−C≡C)n-H, where n = 1−3, designated as Syd-PEn-H. The terminal oligomer unit consists of a sydnone group ortho to the acetylene carbon. We synthesized the platinum complex (Syd-PEn-Pt), the unmodified ligands (PEn-H), and the unmodified platinum complexes (PEn-Pt). The compounds were characterized by various methods, including X-ray diffraction, 13C NMR, ground-state absorption, fluorescence, phosphorescence, and laser flash photolysis. From solving the structure of Syd-PE1-Pt, we find the angle between the sydnone group and the phenyl group is 45°. By comparison of the 13C NMR spectra of the sydnone-containing ligands, the sydnone complexes with the corresponding unmodified ligands and complexes not containing the sydnone group, the sydnone group is shown to polarize the nearest acetylenes and have a charge-transfer interaction with the platinum center. Ground-state absorption spectra of the complexes in various solvents give evidence that the Syd-PE1-Pt complex has an excited state less polar than the ground state, while the PE1-Pt complex has an excited state more polar than the ground state. In all the higher complexes the excited state is more polar than the ground state. The phosphorescence spectrum of the Syd-PE1-Pt complex has an intense vibronic progression distinctly different from the PE1-Pt complex. The sydnone effect is small in Syd-PE2-Pt and negligible in Syd-PE3-Pt. From absorption and emission spectra, we measured the singlet-state energy ES, the triplet-state energy ET, and the singlet−triplet splitting ΔEST. By comparison with energies obtained from the unmodified complexes, attachment of the sydnone lowers ES by ~0.1 eV and raises ET by ~0.1 eV. As a result, the sydnone group lowers ΔEST by ~0.2 eV. The trends suggest one of the triplet-state singly occupied molecular orbitals (SOMOs) is localized on the sydnone group, while the other SOMO resides on the rest of the ligand. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLATINUM KW - OLIGOMERS KW - OPTICS KW - ORGANOMETALLIC chemistry N1 - Accession Number: 23146083; Cooper T. M. 1 Hall B. C. 1 McLean D. G. 1 Rogers J. E. 1 Burke A. R. 1 Turnbull K. 1 Weisner A. 1 Fratini Liu Y. 1 Schanze K. S. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, Universal Technology Corporation, Inc., Dayton, Ohio 45431, Science Applications International Corporation, Dayton, Ohio 45433, UES, Inc., Dayton, Ohio 45432, Anteon Corporation, Dayton, Ohio 45431, Department of Chemistry, Wright State University, Dayton, Ohio 45435, Department of Chemistry, University of Dayton, Dayton, Ohio 45469, and Department of Chemistry, University of Florida, Gainesville, Florida 32611; Source Info: Feb2005, Vol. 109 Issue 6, p999; Subject Term: PLATINUM; Subject Term: OLIGOMERS; Subject Term: OPTICS; Subject Term: ORGANOMETALLIC chemistry; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=23146083&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Devine, R. A. B. AU - Busani, T. T1 - Molecular volume dependence of the electronic and ionic polarizabilities in TiO2 and SiO2. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/02/07/ VL - 86 IS - 6 M3 - Article SP - 062902 PB - American Institute of Physics SN - 00036951 AB - The molecular volume dependence of the ionic and electronic parts of the molecular polarizability in SiO2 and TiO2 polymorphs is examined. It is demonstrated that their variation should not be neglected when using models such as the “additivity rule” to predict multicomponent oxide dielectric constants. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRICS KW - POLARIZABILITY (Electricity) KW - POLARIZATION (Nuclear physics) KW - DIELECTRIC relaxation KW - PHYSICS N1 - Accession Number: 16345496; Devine, R. A. B. 1; Email Address: devine@chtm.unm.edu Busani, T. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Avenue, Albuquerque, New Mexico 87117 and Center for High Technology Materials, University of New Mexico, 1313 Goddard SE, Albuquerque, New Mexico 87106; Source Info: 2/7/2005, Vol. 86 Issue 6, p062902; Subject Term: DIELECTRICS; Subject Term: POLARIZABILITY (Electricity); Subject Term: POLARIZATION (Nuclear physics); Subject Term: DIELECTRIC relaxation; Subject Term: PHYSICS; Number of Pages: 3p; Illustrations: 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.1861511 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16345496&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Selvam, R. Panneer AU - Lanchao Lin AU - Ponnappan, Rengasamy T1 - Computational Modeling of Spray Cooling: Current Status and Future Challenges. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2005/02/06/ VL - 746 IS - 1 M3 - Article SP - 55 EP - 63 PB - American Institute of Physics SN - 0094243X AB - A survey on the current status of computational modeling of spray cooling is reported. From the survey, it is inferred that modeling heat transfer of the spray on thin liquid film on a hot surface will help one to understand and improve the performance of spray cooling. The computer modeling of multiphase flow using the level set method to identify the interface of vapor and liquid is presented. Computed velocity vector and temperature contour diagram are plotted for a thin liquid film of 73.62 μm. The transient Nu on the heated wall is plotted. From that the importance of transient conduction in the liquid film leading to high heat flux in a short time is identified. The mechanics of spray cooling is explained from the modeling study. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COOLING KW - HEAT flux transducers KW - MULTIPHASE flow KW - FLUID dynamics KW - THIN films KW - FLUID mechanics N1 - Accession Number: 16441529; Selvam, R. Panneer 1; Email Address: rps@engr.uark.edu Lanchao Lin 2 Ponnappan, Rengasamy 3; Affiliation: 1: BELL 4190 University of Arkansas, Fayetteville, AR 72701. 2: Universal Energy Systems, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432-1894. 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, OH 45433-7251.; Source Info: 2005, Vol. 746 Issue 1, p55; Subject Term: COOLING; Subject Term: HEAT flux transducers; Subject Term: MULTIPHASE flow; Subject Term: FLUID dynamics; Subject Term: THIN films; Subject Term: FLUID mechanics; Number of Pages: 9p; Document Type: Article L3 - 10.1063/1.1867118 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16441529&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Puterbaugh, Rebekah L. AU - Mychkovsky, Alexander G. AU - Ponnappan, Rengasamy AU - Kislov, Nikolai T1 - Evaluation of an Electrochromic Device for Variable Emittance in Simulated Space Conditions. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2005/02/06/ VL - 746 IS - 1 M3 - Article SP - 90 EP - 98 PB - American Institute of Physics SN - 0094243X AB - Unprotected skin and external surfaces of a spacecraft in earth orbit may experience temperature variations from -50°C to +100°C during exposure to cold space or sun. As a result, thermal management of spacecraft becomes extremely important. One latest trend is to provide flexibility and control in the thermal design that involves variable emittance surfaces consisting of electrochromic (EC) coatings. For investigational purposes, a sample electrochromic device is evaluated for variable emittance in simulated space conditions. A vacuum chamber with a liquid nitrogen circulated blackbody shroud is employed to simulate space conditions. The 63.5 × 63.5 mm test sample supplied by a small business research firm is mounted on an aluminum plate heated by an electrical resistance heater. The sample is thermally insulated by a heat shield from all surroundings excluding the active front surface facing the shroud. The heat shield is uniformly maintained at the sample temperature using an independent circuit of resistance heaters and temperature controllers. A steady state energy balance is applied to the test sample to determine the emittance as a function of temperature and DC bias voltage applied across the anode and cathode. Tests were performed to verify the switchability from high to low emittance states and vice versa. The difference between the high and low emittance values (Δ[variant_greek_epsilon]) obtained in the present calorimetric measurement is compared with the data obtained from FTIR measurements performed by the supplier of the EC sample. Results obtained in the present experiments compare closely with supplier data and prove the effectiveness of the variable emittance sample in space conditions. The validity of the calorimetric experiment is confirmed by testing materials with known emittances, such as black paint and polished metals. Error analysis of the system predicts an emittance accuracy of ±5% at sample temperatures in the range of -50°C to 100°C. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles KW - ORBITS KW - ELECTROCHROMIC devices KW - EARTH (Planet) KW - ALUMINUM KW - ERROR analysis (Mathematics) KW - ORBIT N1 - Accession Number: 16441525; Puterbaugh, Rebekah L. 1; Email Address: rebekah.puterbaugh@wright.edu Mychkovsky, Alexander G. 1 Ponnappan, Rengasamy 1 Kislov, Nikolai 2; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA. 2: Eclipse Energy Systems, Inc., 2345 Anvil Street North, St. Petersburg, FL 33710, USA.; Source Info: 2005, Vol. 746 Issue 1, p90; Subject Term: SPACE vehicles; Subject Term: ORBITS; Subject Term: ELECTROCHROMIC devices; Subject Term: EARTH (Planet); Subject Term: ALUMINUM; Subject Term: ERROR analysis (Mathematics); Subject Term: ORBIT; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1063/1.1867122 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16441525&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Day AU - P. N. AU - Nguyen AU - K. A. AU - Pachter AU - R. T1 - TDDFT Study of One- and Two-Photon Absorption Properties:  Donor−&pgr;−Acceptor Chromophores. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2005/02/03/ VL - 109 IS - 5 M3 - Article SP - 1803 EP - 1814 SN - 15206106 AB - We report a comprehensive time-dependent density functional theory (TDDFT) study of one-photon and two-photon absorption (OPA and TPA, respectively) spectra for donor−&pgr;−acceptor molecules. The calculated excitation energies were generally shown to be in good agreement with experiment, particularly when compared to results from measurements carried out in a nonpolar solvent, although the oscillator strengths were overestimated in some cases. Calculated TPA cross sections applying the two-state approximation were shown to be highly dependent on the form of the line-shape function used. Although a good agreement with experimental TPA spectra was generally observed, the wide range in the experimentally measured values and lack of systematic experimental data on solvent effects limited a detailed comparison as yet. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTONS KW - ABSORPTION KW - MOLECULES KW - SPECTRUM analysis N1 - Accession Number: 21814665; Day P. N. 1 Nguyen K. A. 1 Pachter R. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433; Source Info: Feb2005, Vol. 109 Issue 5, p1803; Subject Term: PHOTONS; Subject Term: ABSORPTION; Subject Term: MOLECULES; Subject Term: SPECTRUM analysis; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21814665&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pedersen, Todd. R. AU - Gerken, Elizabeth A. T1 - Creation of visible artificial optical emissions in the aurora by high-power radio waves. JO - Nature JF - Nature Y1 - 2005/02/03/ VL - 433 IS - 7025 M3 - Article SP - 498 EP - 500 PB - Nature Publishing Group SN - 00280836 AB - Generation of artificial light in the sky by means of high-power radio waves interacting with the ionospheric plasma has been envisaged since the early days of radio exploration of the upper atmosphere, with proposed applications ranging from regional night-time street lighting to atmospheric measurements. Weak optical emissions have been produced for decades in such ionospheric‘heating’experiments, where they serve as key indicators of electron acceleration, thermal heating, and other effects of incompletely understood wave-particle interactions in the plasma under conditions difficult to replicate in the laboratory. The extremely low intensities produced previously have, however, required sensitive instrumentation for detection, preventing applications beyond scientific research. Here we report observations of radio-induced optical emissions bright enough to be seen by the naked eye, and produced not in the quiet mid-latitude ionosphere, but in the midst of a pulsating natural aurora. This may open the door to visual applications of ionospheric heating technology or provide a way to probe the dynamics of the natural aurora and magnetosphere. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AURORAS KW - RADIO waves KW - LIGHT KW - RADIO (Medium) KW - BLOOD plasma KW - LABORATORIES N1 - Accession Number: 15910174; Pedersen, Todd. R. 1 Gerken, Elizabeth A. 2; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731, USA 2: Department of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, USA; Source Info: 2/3/2005, Vol. 433 Issue 7025, p498; Subject Term: AURORAS; Subject Term: RADIO waves; Subject Term: LIGHT; Subject Term: RADIO (Medium); Subject Term: BLOOD plasma; Subject Term: LABORATORIES; NAICS/Industry Codes: 414510 Pharmaceuticals and pharmacy supplies merchant wholesalers; NAICS/Industry Codes: 621511 Medical Laboratories; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 541940 Veterinary Services; NAICS/Industry Codes: 515111 Radio Networks; Number of Pages: 3p; Document Type: Article L3 - 10.1038/nature03243 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15910174&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jianfu Hou AU - Cross, Charles T1 - Minimizing Blade Dynamic Response in a Bladed Disk Through Design Optimization. JO - AIAA Journal JF - AIAA Journal Y1 - 2005/02// VL - 43 IS - 2 M3 - Article SP - 406 EP - 412 SN - 00011452 AB - A study is presented on minimizing the maximum dynamic response in a mistuned bladed disk through design optimization. A well-studied spring-lumped-mass system was used to model a bladed disk, and the problem was formulated as a constrained, nonlinear optimization process. Intentional mistuning is introduced by varying the blade mass within a given range. An intentional mistuning pattern described in a polynomial form was then solved iteratively to search for the optimized mistuning pattern that produces the smallest maximum blade response amplitude over a given range of excitation frequencies. It was found that the dynamic amplification factor of the maximum responding blade can be reduced to a range between 20 and 40% less than the tuned system for several combinations of engine excitation orders and coupling ratio. The comparison of results shows that this reduction is more effective than the harmonic or linear mistuning patterns proposed in the literature. The effectiveness of the optimized mistuning patterns was examined through Monte Carlo simulations. The optimized mistuning patterns were found to reduce the maximum blade response for all engine excitation orders in the presence of random mistuning. Hence, it may be possible to reduce significantly the maximum blade response levels in bladed disks by implementing an optimized intentional mistuning pattern. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIDISCIPLINARY design optimization KW - ENGINEERING design KW - AERODYNAMICS KW - AMPLITUDE modulation KW - MONTE Carlo method KW - SIMULATION methods & models N1 - Accession Number: 16090013; Jianfu Hou 1 Cross, Charles 2; Affiliation: 1: Senior Research Scientist, Air Vehicles Division, 506 Lorimer Street, Defence Science and Technology Organization, Fishermen's Bend, Victoria 3207, Australia 2: Director, Turbine Engine Fatigue Facility, Propulsion Directorate, Turbine Engine Division, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Feb2005, Vol. 43 Issue 2, p406; Subject Term: MULTIDISCIPLINARY design optimization; Subject Term: ENGINEERING design; Subject Term: AERODYNAMICS; Subject Term: AMPLITUDE modulation; Subject Term: MONTE Carlo method; Subject Term: SIMULATION methods & models; NAICS/Industry Codes: 541330 Engineering Services; Number of Pages: 7p; Illustrations: 1 Diagram, 1 Chart, 16 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16090013&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Higgins, John AU - VanWest, Barry T1 - NDE and repair of damaged Minotaur fairing shell JO - Composite Structures JF - Composite Structures Y1 - 2005/02// VL - 67 IS - 2 M3 - Article SP - 189 EP - 195 SN - 02638223 AB - Abstract: A composite grid-stiffened structural concept was selected for the payload fairing of the Minotaur launch vehicle. Compared to sandwich structures, this concept has the advantages of lower manufacturing costs and lighter weight. Various failure modes were examined for the composite grid-stiffened structure. The controlling criterion for this design was a joint failure in tension between the ribs and skin of the structure. The identification of this failure mechanism and the assessment of bounding strains required to control it required extensive test and analysis effort. Increasing skin thickness to control skin buckling resulted in reduced strains between the skin and ribs. During the final steps of manufacture of this composite structure an industrial accident occurred resulting in extensive damage to one half of the fairing. The failure modes developed during the design of the fairing were used to identify probable regions of damage and effective means of repair for this structure. Conventional ultrasound NDE confirmed that extensive disbonding of ribs and skin had occurred in portions of the damaged fairing half-shell. The resulting repair procedures were applied and the structural testing procedure was modified to insure that the repairs had minimal impact on the test results. The structure has passed structural flight qualification and a second unit is being prepared for launch in 2005. [Copyright &y& Elsevier] AB - Copyright of Composite Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BUCKLING (Mechanics) KW - IMAGING systems in medicine KW - STRAINS & stresses (Mechanics) KW - EMERGENCY medical services KW - Composite KW - Failure criteria KW - Fairing KW - Grid-stiffened KW - NDE KW - Repair KW - Ultrasound N1 - Accession Number: 15835815; Higgins, John 1; Email Address: john.higgins@kirtland.af.mil VanWest, Barry 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Ave. SE, Kirtland AFB, NM, 87117-5776, United States 2: The Boeing Company, Phantom Works, P.O. Box 3707, M/S 45–13, Seattle, WA 98124, United States; Source Info: Feb2005, Vol. 67 Issue 2, p189; Subject Term: BUCKLING (Mechanics); Subject Term: IMAGING systems in medicine; Subject Term: STRAINS & stresses (Mechanics); Subject Term: EMERGENCY medical services; Author-Supplied Keyword: Composite; Author-Supplied Keyword: Failure criteria; Author-Supplied Keyword: Fairing; Author-Supplied Keyword: Grid-stiffened; Author-Supplied Keyword: NDE; Author-Supplied Keyword: Repair; Author-Supplied Keyword: Ultrasound; NAICS/Industry Codes: 624230 Emergency and Other Relief Services; NAICS/Industry Codes: 913130 Municipal police services; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.compstruct.2004.09.032 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15835815&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Goobic, Adam P. AU - Tang, Jinshan AU - Acton, Scott T. T1 - Image Stabilization and Registration for Tracking Cells in the Microvasculature. JO - IEEE Transactions on Biomedical Engineering JF - IEEE Transactions on Biomedical Engineering Y1 - 2005/02// VL - 52 IS - 2 M3 - Article SP - 287 EP - 299 SN - 00189294 AB - We propose a registration system to be used for tracking cells in intravital video microscopy that 1) stabilizes jitter-the undesired translational displacement of frames due to respiratory movement, etc., and 2) registers frames in a moving field of view (F0V) to allow for cell tracking over an extended range. For the first time, tracking of rolling leukocytesin vivo over a moving FOV is demonstrated. In a fixed FOV, stable background regions are located using a morphological approach. Template subregions are then selected from the stable regions and matched to corresponding locations in a reference frame. We show the effectiveness of the stabilization algorithm by using an active contour to track 15 leukocytes previously untrackable due to jitter. For 30 fixed FOV sequences containing rolling leukocytes, the resulting root-mean-square error (RMSE) is less than 0.5 μm. To align frames iii a moving FOV, we present a modified correlation approach to estimate the common region between two consecutive fixed FOVs. We correlate the overlapping regions of the initial frame of the current fixed FOV and the final frame of the previous fixed FOV to register the images in the adjoining moving FOV. The RMSE of our moving FOV registration technique was less than 0.6 μm. In 10 sequences from different venules, we were able to track 11 cells using an active contour approach over moving FOVs. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Biomedical Engineering is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CELLS KW - MICROSCOPY KW - VIDEO microscopy KW - PHYSIOLOGY KW - LEUCOCYTES KW - ALGORITHMS KW - BLOOD cells KW - Active contour KW - leukocyte KW - registration KW - stabilization N1 - Accession Number: 15937844; Goobic, Adam P. 1 Tang, Jinshan 2 Acton, Scott T. 3; Email Address: acton@virginia.edu; Affiliation: 1: Air Force Research Laboratory Sensors Directorate at Hanscom AFB, Bedford, MA 01731 USA. 2: Virginia Image and Video Analysis (VIVA), Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, VA 22904 USA. 3: Virginia Image and Video Analysis (VIVA), Department of Electrical and Computer Engineering, University of Virginia, P.O. Box 400743, Charlottesville, VA 22904 USA.; Source Info: Feb2005, Vol. 52 Issue 2, p287; Subject Term: CELLS; Subject Term: MICROSCOPY; Subject Term: VIDEO microscopy; Subject Term: PHYSIOLOGY; Subject Term: LEUCOCYTES; Subject Term: ALGORITHMS; Subject Term: BLOOD cells; Author-Supplied Keyword: Active contour; Author-Supplied Keyword: leukocyte; Author-Supplied Keyword: registration; Author-Supplied Keyword: stabilization; Number of Pages: 13p; Document Type: Article L3 - 10.1109/TBME.2004.840468 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15937844&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sorescu AU - D. C. AU - Boatz AU - J. A. AU - Thompson AU - D. L. T1 - First-Principles Calculations of the Adsorption of Nitromethane and 1,1-Diamino-2,2-dinitroethylene (FOX-7) Molecules on the α-Al2O3(0001) Surface. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2005/02// VL - 109 IS - 4 M3 - Article SP - 1451 EP - 1463 SN - 15206106 AB - First-principles calculations based on density functional theory (DFT) and the generalized gradient approximation (GGA) have been used to study the adsorption of nitromethane (NM) and 1,1-diamino-2,2-dinitroethylene (FOX-7) molecules on the basal plane of an α-Al2O3 crystal. The calculations employ a (2 × 2) supercell slab model and 3D periodic boundary conditions. On the basis of these calculations, we have determined that both NM and FOX-7 molecules can adsorb nondissociatively on the surface with the most stable adsorption configurations parallel to the surface. The binding energies are in the range 25.3-26.0 kcal/mol for NM and 35.6-48.3 kcal/mol for FOX-7 depending on the relative molecular orientation and the surface sites. The minimum energy pathways for NM dissociation have been determined, and a low-energy pathway leading to H-atom elimination with formation of adsorbed CH2NO2 and hydroxyl species has been identified. Additional calculations have focused on adsorption properties of aci-nitromethane tautomers and on description of the energetic pathways connecting adsorbed nitromethane molecule with these tautomers. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NITROMETHANE KW - NITROALKANES KW - NITRO compounds KW - ALKANES N1 - Accession Number: 18433027; Sorescu D. C. 1 Boatz J. A. 1 Thompson D. L. 1; Affiliation: 1: U.S. Department of Energy, National Energy Technology Laboratory, P.O. Box 10940, Pittsburgh, Pennsylvania 15236, Air Force Research Laboratory, AFRL/PRSP, Edwards AFB, California 93524, and Department of Chemistry, University of Missouri, Columbia, Missouri 65211; Source Info: Feb2005, Vol. 109 Issue 4, p1451; Subject Term: NITROMETHANE; Subject Term: NITROALKANES; Subject Term: NITRO compounds; Subject Term: ALKANES; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18433027&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buryachenko, V. A. AU - Pagano, N. J. T1 - The Multiscale Analysis of Multiple Interacting Inclusions Problem: Finite Number of Interacting Inclusions. JO - Mathematics & Mechanics of Solids JF - Mathematics & Mechanics of Solids Y1 - 2005/02// VL - 10 IS - 1 M3 - Article SP - 25 EP - 62 SN - 10812865 AB - A hybrid method based on the combination of the volume integral equation (VIE) method and the boundary integral equation (BIE) method is proposed for the micro-macro solution of elastostatic 2D and 3D multiscaleproblems in bounded or unbounded solids containing interacting multiple inclusions of essentially different scale. The hybrid micro--macro formulation allows decomposition of the complete problem into two associated subproblems, one residing entirely at the micro-level and the other at the macro-level at each iteration. The efficiency of the standard iterative scheme of the BIE and VIE methods for the singular integral equations involved is enhanced by the use of a modification in the spirit of a subtraction technique as well as by the advantageous choice of the initial analytical approximation for interacting inclusions (micro-level) in an unbounded medium subjected to inhomogeneous loading. The latter is evaluated by the macro-scale BIE technique capable of handling complex finite geometries and mixed boundary conditions. The iteration method proposed converges rapidly in a wide class of problems considered with high matrix-inclusion elastic contrast, with continuously varying anisotropic and nonlinear elastic properties of inclusions, as well as with sizes of interacting inclusions differing by a factor varying in the interval from 1 to 107. The accuracy and efficiency of the method are examined through comparison with results obtained from finite-element analysis and boundary element analysis as well as from analytical solution. [ABSTRACT FROM AUTHOR] AB - Copyright of Mathematics & Mechanics of Solids is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTEGRAL equations KW - FUNCTIONAL equations KW - BOUNDARY element methods KW - NUMERICAL analysis KW - MATHEMATICS KW - elastic material KW - inhomogeneous material KW - Microstructures N1 - Accession Number: 15958591; Buryachenko, V. A. 1 Pagano, N. J. 2; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45433-0168, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLBC, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Feb2005, Vol. 10 Issue 1, p25; Subject Term: INTEGRAL equations; Subject Term: FUNCTIONAL equations; Subject Term: BOUNDARY element methods; Subject Term: NUMERICAL analysis; Subject Term: MATHEMATICS; Author-Supplied Keyword: elastic material; Author-Supplied Keyword: inhomogeneous material; Author-Supplied Keyword: Microstructures; Number of Pages: 38p; Illustrations: 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1177/1081286505031174 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15958591&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pasiliao, Eduardo AU - Pardalos, Panos AU - Pitsoulis, Leonidas T1 - Branch and bound algorithms for the multidimensional assignment problem. JO - Optimization Methods & Software JF - Optimization Methods & Software Y1 - 2005/02// VL - 20 IS - 1 M3 - Article SP - 127 EP - 143 PB - Taylor & Francis Ltd SN - 10556788 AB - This work investigates two branch and bound algorithms based on different tree representations of the multidimensional assignment problem (MAP). The MAP may be depicted as either an index-based tree in which every level of the tree represents a different value of the first index or as a permutation-based tree that has vertices representing different permutation vectors of a feasible solution. We also look at the benefits of sorting the cost coefficients on each index tree level, performing a local search on either just the initial solution or every time we find a better solution, and attempting to use characteristics of previous good solutions through path relinking. The number of dimensions and the number of elements in each dimension will affect algorithm performance. We demonstrate the benefits and drawbacks of using different modifications to the branch and bound approach on different sizes of MAP instances. [ABSTRACT FROM AUTHOR] AB - Copyright of Optimization Methods & Software is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - PERMUTATIONS KW - MATHEMATICAL programming KW - DATA warehousing KW - DATABASES KW - MATHEMATICS KW - Combinatorial optimization KW - Computational results KW - Multidimensional assignment problem N1 - Accession Number: 15604360; Pasiliao, Eduardo 1; Email Address: pasiliao@eglin.af.mil Pardalos, Panos 2 Pitsoulis, Leonidas 3; Affiliation: 1: Munitions Directorate, Air Force Research Laboratory, Eglin AFB, FL 32542, USA. 2: Department of Industrial and Systems Engineering, University of Florida, Gainesville, FL 32611, USA. 3: Department of Mathematical, Physical and Computational Sciences, Aristotle University of Thess aloniki, Thess aloniki GR5 4124, Greece.; Source Info: Feb2005, Vol. 20 Issue 1, p127; Subject Term: ALGORITHMS; Subject Term: PERMUTATIONS; Subject Term: MATHEMATICAL programming; Subject Term: DATA warehousing; Subject Term: DATABASES; Subject Term: MATHEMATICS; Author-Supplied Keyword: Combinatorial optimization; Author-Supplied Keyword: Computational results; Author-Supplied Keyword: Multidimensional assignment problem; Number of Pages: 17p; Document Type: Article L3 - 10.1080/10556780410001697695 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15604360&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Poggie, Jonathan AU - Sternberg, Natalia T1 - Transition from the constant ion mobility regime to the ion-atom charge-exchange regime for bounded collisional plasmas. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2005/02// VL - 12 IS - 2 M3 - Article SP - 023502 PB - American Institute of Physics SN - 1070664X AB - A numerical and analytical study of a planar, collisional, direct-current, plasma-wall problem is presented. The fluid model for the problem is first validated by comparing numerical solutions with experimental data for low-pressure (∼0.1 Pa) electrode sheaths with wall potentials on the order of -100 V. For electric potential, ion number density, and ion velocity, good agreement was found between theory and experiment from within the sheath out to the bulk plasma. The frictional drag resulting from ion-neutral collisions is described by a model incorporating both linear and quadratic velocity terms. In order to study the transition from the constant ion mobility regime (linear friction) to the ion-atom charge-exchange collision regime (quadratic friction), the theoretical model was examined numerically for a range of ion temperatures and ion-neutral collision rates. It was found that the solution profiles in the quasineutral plasma depend on the ion temperature. For low ion temperatures they are governed mainly by the ion-atom charge-exchange regime, whereas for high temperatures they are governed by the constant ion mobility regime. Quasineutral plasma models corresponding to these two limiting cases were solved analytically. In particular, an analytical plasma solution is given for the ion-atom charge exchange regime that includes the effects of ion inertia. In contrast to the quasineutral plasma, the sheath is always governed for low to moderate collision rates by the ion-atom charge-exchange regime, independent of the ion temperature. Varying the collision rate, it was shown that when the wall potential is sufficiently high, the sheath cannot be considered collisionless, even if the collision rate is quite small. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONS KW - PLASMA-wall interactions KW - FLUIDS KW - ION-atom collisions KW - CHARGE transfer KW - SIMULATION methods & models N1 - Accession Number: 15877880; Poggie, Jonathan 1 Sternberg, Natalia 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7512 2: Department of Mathematics and Computer Science, Clark University, Worcester, Massachusetts 01610; Source Info: Feb2005, Vol. 12 Issue 2, p023502; Subject Term: IONS; Subject Term: PLASMA-wall interactions; Subject Term: FLUIDS; Subject Term: ION-atom collisions; Subject Term: CHARGE transfer; Subject Term: SIMULATION methods & models; Number of Pages: 9p; Document Type: Article L3 - 10.1063/1.1844512 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15877880&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gordon, Steven J. AU - Dorn, Ronald I. T1 - Localized Weathering: Implications for Theoretical and Applied Studies. JO - Professional Geographer JF - Professional Geographer Y1 - 2005/02// VL - 57 IS - 1 M3 - Article SP - 28 EP - 43 PB - Taylor & Francis Ltd SN - 00330124 AB - In situ quantification of localized weathering processes on basalt flows in New Mexico and Hawaii demonstrates that small-area factors can be more important than other more readily observable factors. Further, it demonstrates that the factorial concept of the Pope Boundary-Layer weathering model is partially solvable, that organic weathering can accentuate glass weathering (with implications for climate models and storage of nuclear waste), and that silica coatings are not a simple solution for the preservation of stone monuments. Enhancement of glass weathering by lichens on the McCartys flow, El Malpais National Monument, New Mexico, remains restricted to a half-millimeter directly underneath the lichen-covered surface. In contrast, although the inorganic rock coating of silica glaze reduces weathering directly underneath the coating by up to nine times rates found in uncoated locales, silica glaze can almost double variability in weathering along its margins. [ABSTRACT FROM AUTHOR] AB - Copyright of Professional Geographer is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WEATHERING KW - GEOMORPHOLOGY KW - LICHENS KW - BASALT KW - NEW Mexico KW - HAWAII KW - geomorphology KW - Hawaii KW - lichen KW - rate KW - weathering N1 - Accession Number: 15840324; Gordon, Steven J. 1 Dorn, Ronald I. 2; Affiliation: 1: 1United States Air Force Academy 2: 2Arizona State University; Source Info: Feb2005, Vol. 57 Issue 1, p28; Subject Term: WEATHERING; Subject Term: GEOMORPHOLOGY; Subject Term: LICHENS; Subject Term: BASALT; Subject Term: NEW Mexico; Subject Term: HAWAII; Author-Supplied Keyword: geomorphology; Author-Supplied Keyword: Hawaii; Author-Supplied Keyword: lichen; Author-Supplied Keyword: rate; Author-Supplied Keyword: weathering; NAICS/Industry Codes: 212311 Dimension Stone Mining and Quarrying; NAICS/Industry Codes: 212316 Marble mining and quarrying; NAICS/Industry Codes: 212319 Other Crushed and Broken Stone Mining and Quarrying; Number of Pages: 16p; Document Type: Article L3 - 10.1111/j.0033-0124.2005.00457.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15840324&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sun, Greg AU - Soref, Richard A. AU - Khurgin, Jacob B. T1 - Active region design of a terahertz GaN/ Al0.15Ga0.85N quantum cascade laser JO - Superlattices & Microstructures JF - Superlattices & Microstructures Y1 - 2005/02// VL - 37 IS - 2 M3 - Article SP - 107 EP - 113 SN - 07496036 AB - Abstract: We propose the idea of developing THz quantum cascade lasers (QCLs) with GaN-based quantum well (QW) structures with significant advantages over the currently demonstrated THz lasers in the GaAs-based material system. While the ultrafast longitudinal optical (LO) phonon scattering in AlGaN/GaN QWs can be used for the rapid depopulation of the lower laser state, the large LO-phonon energy (∼90 meV) can effectively reduce the thermal population of the lasing states at higher temperatures. Our analysis of one particular structure has shown that a relatively low threshold current density of 832 A/cm2 can provide a threshold optical gain of 50/cm at room temperature. We have also found that the characteristic temperature in this structure is as high as 136 K. [Copyright &y& Elsevier] AB - Copyright of Superlattices & Microstructures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM wells KW - POTENTIAL theory (Physics) KW - LASERS KW - OPTOELECTRONIC devices KW - Gallium nitride KW - Optical phonon scattering KW - Quantum cascade laser KW - THz emission N1 - Accession Number: 15671977; Sun, Greg 1; Email Address: greg.sun@umb.edu Soref, Richard A. 2 Khurgin, Jacob B. 3; Affiliation: 1: Department of Physics, University of Massachusetts, Boston, MA 02125, USA 2: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA 01731, USA 3: Department of Electrical and Computer Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA; Source Info: Feb2005, Vol. 37 Issue 2, p107; Subject Term: QUANTUM wells; Subject Term: POTENTIAL theory (Physics); Subject Term: LASERS; Subject Term: OPTOELECTRONIC devices; Author-Supplied Keyword: Gallium nitride; Author-Supplied Keyword: Optical phonon scattering; Author-Supplied Keyword: Quantum cascade laser; Author-Supplied Keyword: THz emission; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.spmi.2004.09.046 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15671977&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Daniels, M.J. AU - King, D. AU - Fehrenbacher, L. AU - Zabinski, J.S. AU - Bilello, J.C. T1 - Physical vapor deposition route for production of Al–Cu–Fe–Cr and Al–Cu–Fe quasicrystalline and approximant coatings JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2005/02// VL - 191 IS - 1 M3 - Article SP - 96 EP - 101 SN - 02578972 AB - Abstract: A novel route for production of Al–Cu–Fe–Cr and Al–Cu–Fe quasicrystalline and approximant coatings by physical vapor deposition (PVD) methods is described. Powdered elemental stoichiometric mixtures were formed and vacuum pressed at 400 °C in a graphite die to produce ≈50% dense sputtering targets. X-ray diffraction analysis performed on the expended targets revealed elemental Al and Cu phases with significant quantities of intermetallic θ (Al2Cu) and/or λ (Al13Fe4) phases also present. These targets were used to sputter thick (10 μm) precursor coatings onto alumina substrates. Predominantly O1 approximant decagonal approximant coatings were produced by sputtering from the Al–Cu–Fe–Cr target and subsequent annealing in vacuum in flowing argon at 500 °C for 4 h. Icosohedral and rhombohedral approximant phases are produced by sputtering from the Al–Cu–Fe target and annealing in argon at 850 or 450 °C, respectively. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM alloys KW - COATING processes KW - THIN films KW - NOBLE gases KW - D] Quasicrystal KW - [B] X-ray diffraction KW - [C] Physical vapor deposition (PVD) KW - [C] Sputtering KW - [D] Aluminum alloy KW - [X KW - [X, D] Quasicrystal N1 - Accession Number: 15551622; Daniels, M.J. 1; Email Address: mdaniels@umich.edu King, D. 1 Fehrenbacher, L. 1 Zabinski, J.S. 2 Bilello, J.C. 3; Affiliation: 1: Technology Assessment and Transfer, 133 Defense Highway, Suite 212, Annapolis, MD 21401, USA 2: Air Force Research Laboratory, 2941 P. Street, Wright-Patterson AFB, OH 45433, USA 3: Center for Nanomaterials Science, Department of Materials Science and Engineering, University of Michigan, 2300 Hayward Street, Ann Arbor, MI 48109-2136, USA; Source Info: Feb2005, Vol. 191 Issue 1, p96; Subject Term: ALUMINUM alloys; Subject Term: COATING processes; Subject Term: THIN films; Subject Term: NOBLE gases; Author-Supplied Keyword: D] Quasicrystal; Author-Supplied Keyword: [B] X-ray diffraction; Author-Supplied Keyword: [C] Physical vapor deposition (PVD); Author-Supplied Keyword: [C] Sputtering; Author-Supplied Keyword: [D] Aluminum alloy; Author-Supplied Keyword: [X; Author-Supplied Keyword: [X, D] Quasicrystal; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.surfcoat.2004.07.117 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15551622&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Suri, Suresh C. AU - Marcischak, Jacob C. T1 - New Application of Bromotrimethylsilane: Elaboration of Aldehydes/Ketones into Homologous α,7beta;-Unsaturated Esters via β-Hydroxy Esters. JO - Synthetic Communications JF - Synthetic Communications Y1 - 2005/02// VL - 35 IS - 3 M3 - Article SP - 57 EP - 387 PB - Taylor & Francis Ltd SN - 00397911 AB - α,β-Unsaturated esters are formed when β3-hydroxy esters react with bromotrimethylsilane which is generated from chlorotrimethylsilane-lithium bromide in acetonitrile. [ABSTRACT FROM AUTHOR] AB - Copyright of Synthetic Communications is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ESTERS KW - ORGANIC compounds KW - CHEMICAL reactions KW - ACETONITRILE KW - LITHIUM KW - BROMIDES KW - α,β-unsaturated ester KW - β,γ-unsaturated ester KW - β-hydroxy ester KW - Bromotrimethylsilane KW - reformatsky reaction N1 - Accession Number: 16662919; Suri, Suresh C. 1; Email Address: suresh.suri@edwards.af.mil Marcischak, Jacob C. 1; Affiliation: 1: Air Force Research Laboratory/PRSP, Edwards Air Force Base, CA, USA; Source Info: 2005, Vol. 35 Issue 3, p57; Subject Term: ESTERS; Subject Term: ORGANIC compounds; Subject Term: CHEMICAL reactions; Subject Term: ACETONITRILE; Subject Term: LITHIUM; Subject Term: BROMIDES; Author-Supplied Keyword: α,β-unsaturated ester; Author-Supplied Keyword: β,γ-unsaturated ester; Author-Supplied Keyword: β-hydroxy ester; Author-Supplied Keyword: Bromotrimethylsilane; Author-Supplied Keyword: reformatsky reaction; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 9p; Illustrations: 3 Diagrams, 1 Chart; Document Type: Article L3 - 10.1081/SCC-200048941 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16662919&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, J.K. AU - Tzou, D.Y. AU - Beraun, J.E. T1 - Numerical investigation of ultrashort laser damage in semiconductors JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2005/01/30/ VL - 48 IS - 3/4 M3 - Article SP - 501 EP - 509 SN - 00179310 AB - Abstract: A complete self-consistent model for transport dynamics in semiconductors caused by ultrashort-pulse laser heating is presented based on the relaxation-time approximation of the Boltzmann equation. Carrier–lattice nonequilibrium interactions are simulated to obtain the temporal and spatial evolution of the carrier density and temperature as well as the lattice temperature. It is shown that the calculated damage threshold based on the carrier density criterion agrees fairly well with the experimental data for both Si and Ge semiconductors, especially for sub-picosecond pulses. It is also found that one-photon absorption and Auger recombination are the two critical factors that influence the electron–hole carrier generation. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC conductivity KW - HIGH technology industries KW - SEMICONDUCTORS KW - SOLID state electronics N1 - Accession Number: 17152540; Chen, J.K. 1 Tzou, D.Y. 2 Beraun, J.E. 1; Affiliation: 1: Laser Effects Research Branch, Directed Energy Directorate, Air Force Research Laboratory, 3550 Aberdeen Avenue SE, Kirtland AFB, NM 87117-5776, USA 2: Department of Mechanical and Aerospace Engineering, University of Missouri––Columbia, Columbia, MO 65211, USA; Source Info: Jan2005, Vol. 48 Issue 3/4, p501; Subject Term: ELECTRIC conductivity; Subject Term: HIGH technology industries; Subject Term: SEMICONDUCTORS; Subject Term: SOLID state electronics; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2004.09.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17152540&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ibrahim, R.A. AU - Pettit, C.L. T1 - Uncertainties and dynamic problems of bolted joints and other fasteners JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2005/01/21/ VL - 279 IS - 3-5 M3 - Article SP - 857 EP - 936 SN - 0022460X AB - This review article provides an overview of the problems pertaining to structural dynamics with bolted joints. These problems are complex in nature because every joint involves different sources of uncertainty and non-smooth non-linear characteristics. For example, the contact forces are not ideally plane due to manufacturing tolerances of contact surfaces. Furthermore, the initial forces will be redistributed non-uniformly in the presence of lateral loads. This is in addition to the prying loading, which is non-linear tension in the bolt and non-linear compression in the joint. Under environmental dynamic loading, the joint preload experiences some relaxation that results in time variation of the structure''s dynamic properties. Most of the reported studies focused on the energy dissipation of bolted joints, linear and non-linear identification of the dynamic properties of the joints, parameter uncertainties and relaxation, and active control of the joint preload. Design issues of fully and partially restrained joints, sensitivity analysis to variations of joint parameters, and fatigue prediction for metallic and composite joints will be discussed. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BOLTED joints KW - JOINTS (Engineering) KW - FASTENERS KW - MANUFACTURING processes N1 - Accession Number: 15450771; Ibrahim, R.A. 1; Email Address: raouf_ibrahim@eng.wayne.edu Pettit, C.L. 2; Affiliation: 1: Wayne State University, Department of Mechanical Engineering Detroit, MI 48202, USA 2: Air Force Research Laboratory AFRL/VASD, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Jan2005, Vol. 279 Issue 3-5, p857; Subject Term: BOLTED joints; Subject Term: JOINTS (Engineering); Subject Term: FASTENERS; Subject Term: MANUFACTURING processes; NAICS/Industry Codes: 332722 Bolt, Nut, Screw, Rivet, and Washer Manufacturing; NAICS/Industry Codes: 339993 Fastener, Button, Needle, and Pin Manufacturing; NAICS/Industry Codes: 423710 Hardware Merchant Wholesalers; NAICS/Industry Codes: 416330 Hardware merchant wholesalers; NAICS/Industry Codes: 339990 All other miscellaneous manufacturing; NAICS/Industry Codes: 333994 Industrial Process Furnace and Oven Manufacturing; NAICS/Industry Codes: 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables; Number of Pages: 80p; Document Type: Article L3 - 10.1016/j.jsv.2003.11.064 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15450771&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Valkenburg, Michael E.Van AU - Vaughn, Robert L. AU - Williams, Margaret AU - Wilkes, John S. T1 - Thermochemistry of ionic liquid heat-transfer fluids JO - Thermochimica Acta JF - Thermochimica Acta Y1 - 2005/01/20/ VL - 425 IS - 1/2 M3 - Article SP - 181 EP - 188 SN - 00406031 AB - Abstract: Large-scale solar energy collectors intended for electric power generation require a heat-transfer fluid with a set of properties not fully met by currently available commercial materials. Ionic liquids have thermophysical and chemical properties that may be suitable for heat transfer and short heat term storage in power plants using parabolic trough solar collectors. Ionic liquids are salts that are liquid at or near room temperature. Thermal properties important for heat transfer applications are melting point, boiling point, liquidus range, heat capacity, heat of fusion, vapor pressure, and thermal conductivity. Other properties needed to evaluate the usefulness of ionic liquids are density, viscosity and chemical compatibility with certain metals. Three ionic liquids were chosen for study based on their range of solvent properties. The solvent properties correlate with solubility of water in the ionic liquids. The thermal and chemical properties listed above were measured or compiled from the literature. Contamination of the ionic liquids by impurities such as water, halides, and metal ions often affect physical properties. The ionic liquids were analyzed for those impurities, and the impact of the contamination was evaluated by standard addition. The conclusion is that the ionic liquids have some very favorable thermal properties compared to targets established by the Department of Energy for solar collector applications. [Copyright &y& Elsevier] AB - Copyright of Thermochimica Acta is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT transfer KW - HYDROSTATICS KW - SOLAR energy KW - ELECTRIC utilities KW - SOLAR heating KW - Heat capacity KW - Heat transfer KW - Ionic liquid KW - Thermal conductivity KW - Thermal stability N1 - Accession Number: 16030272; Valkenburg, Michael E.Van 1 Vaughn, Robert L. 1 Williams, Margaret 1 Wilkes, John S.; Email Address: john.wilkes@usafa.af.mil; Affiliation: 1: Department of Chemistry, 2355 Fairchild Drive, Suite 2N225, US Air Force Academy, CO 80840-6230, USA; Source Info: Jan2005, Vol. 425 Issue 1/2, p181; Subject Term: HEAT transfer; Subject Term: HYDROSTATICS; Subject Term: SOLAR energy; Subject Term: ELECTRIC utilities; Subject Term: SOLAR heating; Author-Supplied Keyword: Heat capacity; Author-Supplied Keyword: Heat transfer; Author-Supplied Keyword: Ionic liquid; Author-Supplied Keyword: Thermal conductivity; Author-Supplied Keyword: Thermal stability; NAICS/Industry Codes: 221122 Electric Power Distribution; NAICS/Industry Codes: 221121 Electric Bulk Power Transmission and Control; NAICS/Industry Codes: 221118 Other Electric Power Generation; NAICS/Industry Codes: 221117 Biomass Electric Power Generation; NAICS/Industry Codes: 221116 Geothermal Electric Power Generation; NAICS/Industry Codes: 221115 Wind Electric Power Generation; NAICS/Industry Codes: 221114 Solar Electric Power Generation; NAICS/Industry Codes: 221113 Nuclear Electric Power Generation; NAICS/Industry Codes: 221111 Hydroelectric Power Generation; NAICS/Industry Codes: 221112 Fossil Fuel Electric Power Generation; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.tca.2004.11.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16030272&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Best, Steven R. T1 - A Discussion on the Quality Factor of Impedance Matched Electrically Small Wire Antennas. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2005/01/15/Jan2005 Part 2 of 2 VL - 53 IS - 1 M3 - Article SP - 502 EP - 508 SN - 0018926X AB - The quality factors of several impedance matched, electrically small wire antennas are compared as a function of matching technique and antenna geometry. The antennas considered have the same height and wire diameter, and they are designed to be self-resonant at approximately the same frequency. The antennas are impedance matched to a nominal 50 Ohm characteristic impedance using either a parallel stub, lossless reactive network or lossless transformer. It is shown that the quality factors of the antennas are essentially the same, and for the most part, independent of the matching technique and differences in the antenna geometry. The quality factor of the impedance matched, electrically small antenna is primarily established by the antenna's height and effective volume. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC impedance KW - ALTERNATING currents KW - ELECTRIC lines KW - RESEARCH KW - ANTENNAS (Electronics) KW - ELECTRIC power distribution KW - Electrically small antennas KW - quality factor KW - wire antennas. N1 - Accession Number: 15851087; Best, Steven R. 1; Email Address: steven.best@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory (AFRL/SNHA), Hanscom AFB, MA 01731 USA; Source Info: Jan2005 Part 2 of 2, Vol. 53 Issue 1, p502; Subject Term: ELECTRIC impedance; Subject Term: ALTERNATING currents; Subject Term: ELECTRIC lines; Subject Term: RESEARCH; Subject Term: ANTENNAS (Electronics); Subject Term: ELECTRIC power distribution; Author-Supplied Keyword: Electrically small antennas; Author-Supplied Keyword: quality factor; Author-Supplied Keyword: wire antennas.; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238910 Site Preparation Contractors; NAICS/Industry Codes: 221122 Electric Power Distribution; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TAP.2004.837107 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15851087&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Singh, N.B. AU - Suhre, D.R. AU - Green, K. AU - Fernelius, N. AU - Hopkins, F.K. T1 - Periodically poled materials for long wavelength infrared (LWIR) NLO applications JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2005/01/15/ VL - 274 IS - 1/2 M3 - Article SP - 132 EP - 137 SN - 00220248 AB - Abstract: We carried out extensive studies to identify, synthesize, purify and grow crystals of a novel class of halides for nonlinear optical applications. Several compounds such as Tl3PbBr5, Tl4PbI6, Tl4HgI6 and Tl3PbI5, were studied. Optical quality was evaluated by fabricating cm size crystals. The homogeneity of bulk crystal was evaluated by studying transparency, bulk optical distortion and X-ray rocking curve and 2θ-ω scans. Compounds of Tl3PbBr5 composition showed self-poling during the growth. We demonstrated that these halides have transparency from visible to Far-IR wavelength region. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL growth KW - CRYSTAL grain boundaries KW - TWINNING (Crystallography) KW - CRYSTALLOGRAPHY KW - A2. Bridgman technique KW - A2. Single crystal growth KW - B1. Halides KW - B2. Nonlinear optic materials N1 - Accession Number: 19253031; Singh, N.B. 1; Email Address: nb.singh@ngc.com Suhre, D.R. 1 Green, K. 1 Fernelius, N. 2 Hopkins, F.K. 2; Affiliation: 1: Advanced Materials and Semiconductor Device Technology Center, ATL-3BIO, Northrop Grumman Corporation, ES, 1212 Winterson Road, Linthicum, MD 21090, USA 2: Materials Directorate, Air Force Research Laboratory, WPAFB, OH 45433, USA; Source Info: Jan2005, Vol. 274 Issue 1/2, p132; Subject Term: CRYSTAL growth; Subject Term: CRYSTAL grain boundaries; Subject Term: TWINNING (Crystallography); Subject Term: CRYSTALLOGRAPHY; Author-Supplied Keyword: A2. Bridgman technique; Author-Supplied Keyword: A2. Single crystal growth; Author-Supplied Keyword: B1. Halides; Author-Supplied Keyword: B2. Nonlinear optic materials; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jcrysgro.2004.09.098 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19253031&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hay, R. S. T1 - Twin-dislocation interaction in monazite (monoclinic LaPO4). JO - Philosophical Magazine JF - Philosophical Magazine Y1 - 2005/01/11/ VL - 85 IS - 2/3 M3 - Article SP - 373 EP - 386 SN - 14786435 AB - Dislocation-twin interactions were identified by TEM in monazite (monoclinic LaPO4) that was spherically indented at room temperature. Emissary dislocations in front of twin tips were observed. Propagation of dislocation slip bands through twins was also observed. Where possible, slip systems are identified. Formation mechanisms are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Magazine is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISLOCATIONS in metals KW - MONAZITE KW - THORIUM ores KW - PHOSPHATE minerals KW - MECHANICS (Physics) KW - PHYSICS N1 - Accession Number: 16143015; Hay, R. S. 1; Email Address: randall.hay@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAEB, Ohio, USA.; Source Info: 1/11/2005, Vol. 85 Issue 2/3, p373; Subject Term: DISLOCATIONS in metals; Subject Term: MONAZITE; Subject Term: THORIUM ores; Subject Term: PHOSPHATE minerals; Subject Term: MECHANICS (Physics); Subject Term: PHYSICS; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 14p; Document Type: Article L3 - 10.1080/14786430412331315761 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16143015&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hewett, Kevin B. AU - Hager, Gordon D. AU - Crowell, Peter G. T1 - Chemical generation of iodine atoms JO - Chemical Physics JF - Chemical Physics Y1 - 2005/01/10/ VL - 308 IS - 1/2 M3 - Article SP - 159 EP - 169 SN - 03010104 AB - Abstract: The chemical generation of atomic iodine using a chemical combustor to generate the atomic fluorine intermediate, from the reaction of F2+H2, followed by the production of atomic iodine, from the reaction of F+HI, was investigated. The maximum conversion efficiency of HI into atomic iodine was observed to be approximately 75%, which is in good agreement with the theoretical model. The conversion efficiency is limited by the formation of iodine monofluoride at the walls of the combustor where the gas phase temperature is insufficient to dissociate the IF. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IODINE KW - PHOTOSYNTHETIC oxygen evolution KW - CHEMICAL lasers KW - HALOGENS KW - Atomic iodine KW - Chemical oxygen–iodine laser KW - COIL N1 - Accession Number: 19274117; Hewett, Kevin B. 1; Email Address: kevin.hewett@kirtland.af.mil Hager, Gordon D. 1 Crowell, Peter G. 2; Affiliation: 1: Directed Energy Directorate, Air Force Research Laboratory, 3550 Aberdeen Avenue SE, Kirtland AFB, NM 87117-5776, USA 2: Northrup Grumman Information Technology, Science and Technology Operating Unit, Advanced Technology Division, P.O. Box 9377, Albuquerque, NM 87119-9377, USA; Source Info: Jan2005, Vol. 308 Issue 1/2, p159; Subject Term: IODINE; Subject Term: PHOTOSYNTHETIC oxygen evolution; Subject Term: CHEMICAL lasers; Subject Term: HALOGENS; Author-Supplied Keyword: Atomic iodine; Author-Supplied Keyword: Chemical oxygen–iodine laser; Author-Supplied Keyword: COIL; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.chemphys.2004.08.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19274117&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kumar, Binod AU - Chen, Christina AU - Varanasi, Chakrapani AU - Fellner, Joseph P. T1 - Electrical properties of heterogeneously doped yttria stabilized zirconia JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2005/01/10/ VL - 140 IS - 1 M3 - Article SP - 12 EP - 20 SN - 03787753 AB - Abstract: This paper reports the effects of heterogeneously doped Al2O3 on the ionic conductivity of yttria stabilized zirconia (YSZ). At lower dopant concentration, grain growth occurred and the grain boundaries were re-formed. Subsequent increases in the dopant concentration decreased the grain size. The doping leads to the creation of space charge regions in the vicinity of the YSZ–Al2O3 boundaries, conducive to enhanced transport of oxygen ions. The presence of Al2O3 also leads to a blocking effect. The net result of the two antagonistic influences is small and reflected by a relatively minor influence on conductivity. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROMECHANICS KW - ELECTRONS KW - CRYSTAL grain boundaries KW - TWINNING (Crystallography) KW - Dopant KW - Ionic conductivity KW - Microstructure KW - Zirconia N1 - Accession Number: 15646729; Kumar, Binod 1; Email Address: kumar@udri.udayton.edu Chen, Christina 1 Varanasi, Chakrapani 1 Fellner, Joseph P. 2; Affiliation: 1: Metals and Ceramics Division, University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0170, USA 2: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7251, USA; Source Info: Jan2005, Vol. 140 Issue 1, p12; Subject Term: MICROMECHANICS; Subject Term: ELECTRONS; Subject Term: CRYSTAL grain boundaries; Subject Term: TWINNING (Crystallography); Author-Supplied Keyword: Dopant; Author-Supplied Keyword: Ionic conductivity; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Zirconia; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jpowsour.2004.08.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15646729&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sandhu, S.S. AU - Saif, Y.A. AU - Fellner, J.P. T1 - A reformer performance model for fuel cell applications JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2005/01/10/ VL - 140 IS - 1 M3 - Article SP - 88 EP - 102 SN - 03787753 AB - Abstract: A performance model for a reformer, consisting of the catalytic partial oxidation (CPO), high- and low-temperature water-gas shift (HTWGS and LTWGS), and preferential oxidation (PROX) reactors, has been formulated. The model predicts the composition and temperature of the hydrogen-rich reformed fuel-gas mixture needed for the fuel cell applications. The mathematical model equations, based on the principles of classical thermodynamics and chemical kinetics, were implemented into a computer program. The resulting software was employed to calculate the chemical species molar flow rates and the gas mixture stream temperature for the steady-state operation of the reformer. Typical computed results, such as the gas mixture temperature at the CPO reactor exit and the profiles of the fractional conversion of carbon monoxide, temperature, and mole fractions of the chemical species as a function of the catalyst weight in the HTWGS, LTWGS, and PROX reactors, are here presented at the carbon-to-oxygen atom ratio (C/O) of 1 for the feed mixture of n-decane (fuel) and dry air (oxidant). [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FUEL cells KW - OXIDATION KW - CHEMICAL kinetics KW - WATER temperature KW - Preferential oxidation KW - Reformer model KW - Water-gas shift reaction N1 - Accession Number: 15646739; Sandhu, S.S. 1; Email Address: sarwan.sandhu@notes.udayton.edu Saif, Y.A. 1 Fellner, J.P. 2; Email Address: joseph.fellner@wpafb.af.mil; Affiliation: 1: Department of Chemical Engineering and Materials Engineering, University of Dayton, 300 College Park, Dayton, OH 45469-0246, USA 2: Air Force Research Laboratory, Propulsion Directorate, Energy Storage and Thermal Sciences, 1950 Fifth Street, Bldg. 18, WPAFB, OH 45433-7251, USA; Source Info: Jan2005, Vol. 140 Issue 1, p88; Subject Term: FUEL cells; Subject Term: OXIDATION; Subject Term: CHEMICAL kinetics; Subject Term: WATER temperature; Author-Supplied Keyword: Preferential oxidation; Author-Supplied Keyword: Reformer model; Author-Supplied Keyword: Water-gas shift reaction; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.jpowsour.2004.08.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15646739&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anwar, A. F. M. AU - Islam, Syed S. AU - Webster, Richard T. T1 - Response to “Comment on ‘Carrier trapping and current collapse mechanism in GaN metal-semiconductor field effect transistors’ ” [Appl. Phys. Lett. 86, 016101 (2005)]. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2005/01/03/ VL - 86 IS - 1 M3 - Article SP - 016102 PB - American Institute of Physics SN - 00036951 AB - This article presents information on metal-semiconductor field effect transistors. The current collapse mechanisms in AlGaN heterostructure field-effect transistors (HFETs) must not be confused with the mechanisms in GaN metal semiconductor field-effect transistors (MESFETs). The MESFET structure that has been investigated has an N-type GaN channel grown over a thick semi-insulating GaN buffer, so the channel-buffer interface has a strong influence over the transistor performance. The differences reflect fundamental differences between the current collapse phenomena in HFETs and MESFETs. KW - METAL semiconductor field-effect transistors KW - FIELD-effect transistors KW - CRYSTALS KW - ELECTRONICS KW - HETEROSTRUCTURES KW - INVESTIGATIONS N1 - Accession Number: 15593165; Anwar, A. F. M. 1; Email Address: anwara@cngr.uconn.edu Islam, Syed S. 2 Webster, Richard T. 3; Affiliation: 1: University of Connecticut, Electrical and Computer Engineering Department, Storrs, Connecticut 06269-1157. 2: Rochester Institute of Technology, Department of Electrical Engineering, Rochester, New York 14623-5603. 3: Air Force Research Laboratory, Sensors Directorate, Hanscom Air Force Base, Massachusetts 01730-2909.; Source Info: 1/3/2005, Vol. 86 Issue 1, p016102; Subject Term: METAL semiconductor field-effect transistors; Subject Term: FIELD-effect transistors; Subject Term: CRYSTALS; Subject Term: ELECTRONICS; Subject Term: HETEROSTRUCTURES; Subject Term: INVESTIGATIONS; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 2p; Illustrations: 1 Graph; Document Type: Article L3 - 10.1063/1.1844604 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15593165&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barnes, Paul N. AU - Rhoads, Gregory L. AU - Tolliver, Justin C. AU - Sumption, Michael D. AU - Schmaeman, Kevin W. T1 - Compact, Lightweight, Superconducting Power Generators. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2005/01/02/Jan2005 Part 2 of 2 VL - 41 IS - 1 M3 - Article SP - 268 EP - 273 SN - 00189464 AB - Many future military systems will depend heavily on high electrical power input ranging from hundreds of kilowatts up to the multimegawatt level. These weapon systems include electromagnetic launch applications as well as electrically driven directed energy weapons (DEW), such as high-power microwaves and solid-state lasers. These power generation subsystems must often be packaged using limited space and strict weight units on either ground mobile or airborne platforms. Superconducting generators made of high-temperature superconductors (HTS) will enable megawatt-class airborne power systems that are lightweight and compact. Also discussed briefly are new advances in HTS conductors and refrigeration systems furthering the development of HTS power systems. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTORS KW - ELECTRIC generators KW - WEAPONS systems KW - ELECTROMAGNETIC devices KW - MICROWAVES KW - ELECTRIC power production KW - Generators KW - high-temperature superconductors KW - superconducting filaments and wires KW - superconducting tapes N1 - Accession Number: 15850947; Barnes, Paul N. 1; Email Address: Paul.Barnes@wpafb.af.mil Rhoads, Gregory L. 1; Email Address: Greg.Rhoads@wpafb.af.mil Tolliver, Justin C. 1; Email Address: Justin.Tolliver@wpafb.af.mil Sumption, Michael D. 2; Email Address: mdsumption+@osu.edu Schmaeman, Kevin W. 1; Email Address: Kevin.Schmaeman@afrl.af.mil; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA. 2: Department of Materials Science and Engineering, Ohio State University, Columbus, OH 43210 USA.; Source Info: Jan2005 Part 2 of 2, Vol. 41 Issue 1, p268; Subject Term: SUPERCONDUCTORS; Subject Term: ELECTRIC generators; Subject Term: WEAPONS systems; Subject Term: ELECTROMAGNETIC devices; Subject Term: MICROWAVES; Subject Term: ELECTRIC power production; Author-Supplied Keyword: Generators; Author-Supplied Keyword: high-temperature superconductors; Author-Supplied Keyword: superconducting filaments and wires; Author-Supplied Keyword: superconducting tapes; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 221112 Fossil Fuel Electric Power Generation; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TMAG.2004.838984 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15850947&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lang Hong AU - Ningzhou Cui AU - Pronobis, Mark AU - Scott, Stephen T1 - Local Motion Feature Aided Ground Moving Target Tracking With GMTI and HRR Measurements. JO - IEEE Transactions on Automatic Control JF - IEEE Transactions on Automatic Control Y1 - 2005/01// VL - 50 IS - 1 M3 - Article SP - 127 EP - 133 SN - 00189286 AB - Tracking ground moving targets with ground moving target indicator (GMTI) measurements only could face a potential problem of losing tracks or track mingling, if the targets move together within the range of GMTI sensing uncertainty for an extended period of time. We propose a remedy for this problem by using local motion features extracted from high resolution range (RRR) profiles to assist data association. Unlike other HRR features, the new local motion features carry both spatial and temporal information and are ideal for feature aided tracking. A probabilistic logic based tracker is developed for local motion feature aided tracking. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Automatic Control is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH resolution electron microscopy KW - ELECTRON microscopy KW - MICROSCOPY KW - ELECTRON microscopic diagnosis KW - ELECTRON microscopic immunocytochemistry KW - FRACTOGRAPHY N1 - Accession Number: 16053143; Lang Hong 1; Email Address: lhong@cs.wright.edu Ningzhou Cui 1 Pronobis, Mark 2 Scott, Stephen 2; Affiliation: 1: Department of Electrical Engineering, Wright State University, Dayton, OH 45435 USA. 2: Information Directorate, Air Force Research Laboratory, Rome, NY 13441 USA.; Source Info: Jan2005, Vol. 50 Issue 1, p127; Subject Term: HIGH resolution electron microscopy; Subject Term: ELECTRON microscopy; Subject Term: MICROSCOPY; Subject Term: ELECTRON microscopic diagnosis; Subject Term: ELECTRON microscopic immunocytochemistry; Subject Term: FRACTOGRAPHY; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TAC.2004.841119 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16053143&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Robertson, Mark A. AU - Stevenson, Robert L. T1 - DCT Quantization Noise in Compressed Images. JO - IEEE Transactions on Circuits & Systems for Video Technology JF - IEEE Transactions on Circuits & Systems for Video Technology Y1 - 2005/01// VL - 15 IS - 1 M3 - Article SP - 27 EP - 38 SN - 10518215 AB - In lossy image compression schemes utilizing the discrete cosine transform (DCT), quantization of the DCT coefficients introduces error in the image representation and a loss of signal in- formation. At high compression ratios, this introduced error produces visually undesirable compression artifacts that can dramatically lower the perceived quality of a particular image. This paper provides a spatial domain model of the quantization error based on a statistical noise model of the error introduced when quantizing the DCT coefficients. The resulting theoretically derived spatial domain quantization noise model shows that in general the compression noise in the spatial domain is both correlated and spatially varying. This provides some justification to many of the ad hoc artifact removal filters that have been proposed. More importantly, the proposed noise model can be incorporated in a post-processing algorithm that correctly incorporates the spatial correction of the quantizer error. Experimental results demonstrate the effectiveness of this approach. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Circuits & Systems for Video Technology is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DATA compression (Telecommunication) KW - IMAGE compression KW - ALGORITHMS KW - NOISE KW - DATA transmission systems KW - CODING theory N1 - Accession Number: 15620830; Robertson, Mark A. 1 Stevenson, Robert L. 2; Affiliation: 1: Air Force Research Laboratory, Rome, NY 13441 USA. 2: Laboratory for Image and Signal Analysis (LISA), Electrical Engineering Department, University of Notre Dame, Notre Dame, IN 46556 USA.; Source Info: Jan2005, Vol. 15 Issue 1, p27; Subject Term: DATA compression (Telecommunication); Subject Term: IMAGE compression; Subject Term: ALGORITHMS; Subject Term: NOISE; Subject Term: DATA transmission systems; Subject Term: CODING theory; Number of Pages: 12p; Document Type: Article L3 - 10.1109/TCSVT.2004.839995 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15620830&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiang, Jutao AU - Tsao, Stanley AU - Mi, Kan AU - Razeghi, Manijeh AU - Brown, Gail J. AU - Jelen, Christopher AU - Tidrow, Meimei Z. T1 - Advanced monolithic quantum well infrared photodetector focal plane array integrated with silicon readout integrated circuit JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2005/01// VL - 46 IS - 3 M3 - Article SP - 199 EP - 207 SN - 13504495 AB - Today, most infrared focal plane arrays (FPAs) utilize a hybrid scheme. To achieve higher device reliability and lower cost, monolithic FPAs with Si based readout integrated circuits (ROICs) are the trend of the future development. In this paper, two approaches for monolithic FPAs are proposed: double sided integration and selective epitaxy integration. For comparison, the fabrication process for hybrid quantum well infrared photodetectors (QWIP) FPAs are also described. Many problems, such as the growth of QWIPs on Si substrate and processing incompatibility between Si and III–V semiconductors, need to be solved before monolithic FPAs can be realized. Experimental work on GaInAs/InP QWIP-on-Si is given in this paper. A record high detectivity of 2.3 × 109 cm Hz1/2/W was obtained for one QWIP-on-Si detector at 77 K. [Copyright &y& Elsevier] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTEGRATED circuits KW - QUANTUM wells KW - ELECTRONIC circuits KW - CRYSTAL growth KW - Focal plane array KW - GaInAs KW - InP KW - Monolithic KW - Quantum well infrared photodetector KW - Si substrate N1 - Accession Number: 15647500; Jiang, Jutao 1 Tsao, Stanley 1 Mi, Kan 1 Razeghi, Manijeh 1; Email Address: razeghi@ece.northwestern.edu Brown, Gail J. 2 Jelen, Christopher 3 Tidrow, Meimei Z. 4; Affiliation: 1: Department of Electrical and Computer Engineering, Center for Quantum Devices, Northwestern University, 2220 North Campus Drive, Cook Hall, Room 4051, Evanston, IL 60208, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLPS, Wright-Patterson AFB, OH, 45433-7707, USA 3: Northrop Grumman Corporation, Rolling Meadows, IL 60008, USA 4: Missile Defense Agency, 7100 Defense Pentagon, Washington, DC 20301, USA; Source Info: Jan2005, Vol. 46 Issue 3, p199; Subject Term: INTEGRATED circuits; Subject Term: QUANTUM wells; Subject Term: ELECTRONIC circuits; Subject Term: CRYSTAL growth; Author-Supplied Keyword: Focal plane array; Author-Supplied Keyword: GaInAs; Author-Supplied Keyword: InP; Author-Supplied Keyword: Monolithic; Author-Supplied Keyword: Quantum well infrared photodetector; Author-Supplied Keyword: Si substrate; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.infrared.2004.02.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15647500&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Day, Eric Anthony AU - Arthur, Winfred AU - Bell, Suzanne T. AU - Edwards, Bryan D. AU - Bennett, Winston AU - Mendoza, Jorge L. AU - Tubré, Travis C. T1 - Ability-based pairing strategies in the team-based training of a complex skill: Does the intelligence of your training partner matter? JO - Intelligence JF - Intelligence Y1 - 2005/01// VL - 33 IS - 1 M3 - Article SP - 39 EP - 65 SN - 01602896 AB - Abstract: Intelligence researchers traditionally focus their attention on the individual level and overlook the role of intelligence at the interindividual level. This research investigated the interplay of the effects of intelligence at the individual and interindividual levels by manipulating the intelligence-based composition of dyadic training teams. Using a sample of 176 young adult males and a complex computer-based criterion task, homogeneous and heterogeneous dyadic training teams were created based on intelligence scores, and both team and individual performance were assessed throughout 10 h of training. Results indicated a strong additive influence of intelligence on team performance and a slightly positive nonadditive effect in uniformly high (HH)-ability teams. Trainees'' individual skill acquisition was strongly correlated with the performance of their teams. However, nonadditive partner effects were observed such that high-ability trainees acquired significantly more skill when paired with high-ability partners instead of low- ability partners, but low-ability trainees benefited very little from being paired with high-ability partners. [Copyright &y& Elsevier] AB - Copyright of Intelligence is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTELLECT KW - RESEARCH KW - ABILITY grouping (Education) KW - MIXED ability grouping (Education) KW - Dyadic training teams KW - Intelligence KW - Interindividual N1 - Accession Number: 17122611; Day, Eric Anthony 1; Email Address: eday@ou.edu Arthur, Winfred 2; Email Address: wea@psyc.tamu.edu Bell, Suzanne T. 2 Edwards, Bryan D. 2 Bennett, Winston 3 Mendoza, Jorge L. 1 Tubré, Travis C. 2; Affiliation: 1: Department of Psychology, The University of Oklahoma, 455 W. Lindsey, Room 705, Norman, OK, 73019-2007, United States 2: Department of Psychology, Texas A&M University, 4235 TAMU, College Station, TX 77843-4235, United States 3: U.S. Air Force Research Laboratory, United States; Source Info: Jan2005, Vol. 33 Issue 1, p39; Subject Term: INTELLECT; Subject Term: RESEARCH; Subject Term: ABILITY grouping (Education); Subject Term: MIXED ability grouping (Education); Author-Supplied Keyword: Dyadic training teams; Author-Supplied Keyword: Intelligence; Author-Supplied Keyword: Interindividual; Number of Pages: 27p; Document Type: Article L3 - 10.1016/j.intell.2004.09.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17122611&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wood, John AU - Campbell, Matthew AU - Wood, Kristin AU - Jensen, Dan T1 - Enhancing the teaching of machine design by creating a basic hands-on environment with mechanical ‘breadboards’. JO - International Journal of Mechanical Engineering Education JF - International Journal of Mechanical Engineering Education Y1 - 2005/01// VL - 33 IS - 1 M3 - Article SP - 1 EP - 25 SN - 03064190 AB - The pendulum of engineering education is swinging from an emphasis on theoretical material to a balance between theory and hands-on activities. This transformation is motivated, in part, by the different experiential background of students presently entering engineering programs in comparison with their predecessors. Instead of a tinkering background with the dissection of machines and use of tools (which was previously common for students), students are now entering with a background in computing, video games, and other ‘virtual’ experiences. This focus has left a void in the ability to relate engineering principles to real-world devices and applications. Another void is also apparent in the variety of students' learning styles. Our course presentation should accommodate these different styles. In this paper, we introduce a new approach for filling these voids in a mechanical engineering curriculum. Through the application of ‘mechanical breadboards’, clear relationships between machine design principles and the reality of machine components are established. The introduction of hands-on devices also provides a foundation for teaching to the full spectrum of learning styles. We have seen a dramatic increase in student motivation (as measured by student course evaluations) and a tremendous increase in students' ability to apply machine design concepts in subsequent design courses. Faculty have reported an initial increase in preparation workload, but have also indicated that the course is much more effective at meeting its stated objectives. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Mechanical Engineering Education is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENGINEERING -- Study & teaching KW - EDUCATION KW - MACHINE design KW - ENGINEERING design KW - VIDEO games KW - hands-on KW - machine design KW - mechanical breadboards N1 - Accession Number: 17753148; Wood, John 1 Campbell, Matthew 2 Wood, Kristin 2 Jensen, Dan 1; Email Address: dan.jensen@usafa.af.mil; Affiliation: 1: Department of Engineering Mechanics, US Air Force Academy, Colorado, USA 2: Department of Mechanical Engineering University of Texas, Austin, USA; Source Info: Jan2005, Vol. 33 Issue 1, p1; Subject Term: ENGINEERING -- Study & teaching; Subject Term: EDUCATION; Subject Term: MACHINE design; Subject Term: ENGINEERING design; Subject Term: VIDEO games; Author-Supplied Keyword: hands-on; Author-Supplied Keyword: machine design; Author-Supplied Keyword: mechanical breadboards; NAICS/Industry Codes: 611699 All Other Miscellaneous Schools and Instruction; NAICS/Industry Codes: 611710 Educational Support Services; NAICS/Industry Codes: 923110 Administration of Education Programs; NAICS/Industry Codes: 541330 Engineering Services; NAICS/Industry Codes: 333999 All Other Miscellaneous General Purpose Machinery Manufacturing; NAICS/Industry Codes: 511212 Video game publishers; NAICS/Industry Codes: 414210 Home entertainment equipment merchant wholesalers; NAICS/Industry Codes: 339930 Doll, Toy, and Game Manufacturing; NAICS/Industry Codes: 541515 Video game design and development services; Number of Pages: 25p; Illustrations: 4 Charts, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17753148&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cheng, Meng-Dawn AU - Jenkins, Charles M. T1 - Production and dynamics of ultrafine and fine particles in contained detonations of aluminium energetics JO - Journal of Aerosol Science JF - Journal of Aerosol Science Y1 - 2005/01// VL - 36 IS - 1 M3 - Article SP - 1 EP - 12 SN - 00218502 AB - Abstract: Several experiments were conducted to improve understanding of the properties of airborne particles generated by detonation of conventional charges and explosives prepared from nanophase aluminum-powder materials. We believe this is the first time that the time-dependent behavior of ultrafine particles produced by explosions are reported. Based on our analysis of the measurement data, it appears that the initial peak diameter of particles produced by the detonation of test charges in the experiments, irrespective of the original formulations, is in the proximity of 40nm. The particles eventually grew to the size range between 100 and 300nm within 30min. Charges prepared from the nanophase powders (50- and 100-nm) produced significantly higher number concentration values than those from conventional formulation and 15- powder material. The differences were two orders of magnitude higher by 50-nm powder, one order by the 100-nm, and 2 times higher by the 15- powder charge in comparison to the conventional formulation. The reduction of total number concentration of particles over time produced by detonation of the four charges appears to follow a pseudo-first-order chemical kinetics—linear functional on a semi-log plot. Employing this functional, the particle removal rates estimated for the four charges ranged from 0.014 to . The removal rates were found to be statistically different (at the 95% confidence interval), and in the following order: the rate for charge . [Copyright &y& Elsevier] AB - Copyright of Journal of Aerosol Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM KW - LIGHT metals KW - EXPLOSIVES KW - TECHNICAL chemistry KW - Detonation KW - Nanoenergetics KW - Nanophase materials KW - Particle size evolution KW - Ultrafine particles N1 - Accession Number: 15583737; Cheng, Meng-Dawn 1; Email Address: chengmd@ornl.gov Jenkins, Charles M. 2; Affiliation: 1: Oak Ridge National Laboratory, Environmental Sciences Division, Building 1505, PO Box 2008, MS 6038, OaK Ridge, 37831608, TN, USA 2: Air Force Research Laboratory, Munitions Directorate/HERD, Eglin AFB, FL,USA; Source Info: Jan2005, Vol. 36 Issue 1, p1; Subject Term: ALUMINUM; Subject Term: LIGHT metals; Subject Term: EXPLOSIVES; Subject Term: TECHNICAL chemistry; Author-Supplied Keyword: Detonation; Author-Supplied Keyword: Nanoenergetics; Author-Supplied Keyword: Nanophase materials; Author-Supplied Keyword: Particle size evolution; Author-Supplied Keyword: Ultrafine particles; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325920 Explosives Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.jaerosci.2004.07.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15583737&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Birman, Victor AU - Byrd, Larry W. T1 - Effect of z-Pins on Fracture in Composite Cocured Double Cantilever Beams. JO - Journal of Aerospace Engineering JF - Journal of Aerospace Engineering Y1 - 2005/01// VL - 18 IS - 1 M3 - Article SP - 51 EP - 59 PB - American Society of Civil Engineers SN - 08931321 AB - The paper illustrates a new approach to the evaluation of the effect of z-pins on deformations and the strain energy release rate in composite double cantilever beams (DCB) subject to a standard fracture toughness test. The effect of z-pins is modeled by an elastic foundation, based on previously published work. The approach to the solution is based on a separate analysis of the intact and delaminated parts of DCB. The rotational stiffness of the intact part is obtained from the Rayleigh-Ritz solution for this part subjected to a force couple, rather than modeling the rotational restraint by introducing an elastic foundation, as has been done in the previous studies. Subsequently, the deformation of the delaminated part of DCB is analyzed exactly by solving the equation of equilibrium with the appropriate boundary conditions. Based on this solution, the compliance, the rate of change of compliance, and the strain energy of the specimen can be evaluated. The results illustrate the beneficial effect of z-pins on the resistance of DCB to delamination cracking. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerospace Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRACTURE mechanics KW - CANTILEVER bridges KW - COMPOSITE materials KW - DEFORMATIONS (Mechanics) KW - JOINTS (Engineering) KW - Beams KW - cantilever KW - Deformation KW - Fractures KW - Joints KW - Toughness N1 - Accession Number: 15382516; Birman, Victor 1 Byrd, Larry W. 2; Affiliation: 1: Univ. of Missouri, Rolla, Engineering Education Center, 8001 Natural Bridge Rd., St. Louis, MO 63121 2: Air Force Research Laboratory, AFRL/VASM, Building 65, 2700 D St., Wright-Patterson Air Force Base, OH 45433; Source Info: Jan2005, Vol. 18 Issue 1, p51; Subject Term: FRACTURE mechanics; Subject Term: CANTILEVER bridges; Subject Term: COMPOSITE materials; Subject Term: DEFORMATIONS (Mechanics); Subject Term: JOINTS (Engineering); Author-Supplied Keyword: Beams; Author-Supplied Keyword: cantilever; Author-Supplied Keyword: Deformation; Author-Supplied Keyword: Fractures; Author-Supplied Keyword: Joints; Author-Supplied Keyword: Toughness; Number of Pages: 9p; Illustrations: 3 Diagrams, 2 Charts, 6 Graphs; Document Type: Article L3 - 10.1061/(ASCE)0893-1321(2005)18:1(51) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15382516&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reich, Gregory W. AU - Bowman, Jason C. AU - Sanders, Brian T1 - Large-Area Aerodynamic Control for High-Altitude Long-Endurance Sensor Platforms. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2005/01//Jan/Feb2005 VL - 42 IS - 1 M3 - Article SP - 237 EP - 244 SN - 00218669 AB - The use of large-area aerodynamic control schemes to enable high-altitude long-endurance sensor platforms is investigated. The focus is on a vehicle with a joined-wing design. The vehicle has two performance shortcomings that are considered typical of the broader class of high-altitude long-endurance vehicles. The first is minimum roll rate at landing due to the large amount of roll damping associated with these configurations. It is shown that multiple distributed control surfaces can help meet the roll rate requirements. The second is sensitivity of takeoff gross weight to maximum lift-to-drag ratio. Notional mission requirements drive the fuel fraction to high levels and small changes in lift-to-drag ratio can enable large changes in the vehicle weight through reduced fuel requirements. It is shown that the same technology used to satisfy the roll requirement can also be used to actively control the twist and camber during cruise and can have a moderate impact on the vehicle weight or endurance. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - AERONAUTICS KW - DAMPING (Mechanics) KW - FUEL KW - VEHICLES N1 - Accession Number: 16304363; Reich, Gregory W. 1,2 Bowman, Jason C. 3 Sanders, Brian 4,5; Affiliation: 1: Research Aerospace Engineer, Air Vehicles Directorate, AFRL/VASA, 2210 8th Street, Room 219, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Senior Member AIAA 3: Research Aerospace Engineer, Air Vehicles Directorate, AFRL/VASA 2210 8th Street, Room 219, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 4: Senior Research Engineer, Air Vehicles Directorate, AFRL/VASA, 2210 8th Street, Room 219, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 5: Associate Fellow AIAA; Source Info: Jan/Feb2005, Vol. 42 Issue 1, p237; Subject Term: AERODYNAMICS; Subject Term: AERONAUTICS; Subject Term: DAMPING (Mechanics); Subject Term: FUEL; Subject Term: VEHICLES; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 454310 Fuel Dealers; NAICS/Industry Codes: 454319 Other fuel dealers; Number of Pages: 8p; Illustrations: 6 Diagrams, 2 Charts, 6 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16304363&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Janardhan, Srinivasan AU - Grandhi, Ramana V. AU - Eastep, Frank AU - Sanders, Brian T1 - Parametric Studies of Transonic Aeroelastic Effects of an Aircraft Wing/Tip Store. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2005/01//Jan/Feb2005 VL - 42 IS - 1 M3 - Article SP - 253 EP - 263 SN - 00218669 AB - This research investigates the effect of store parameters variation on store-induced flutter and limit-cycle oscillation phenomena of an aircraft wing in the transonic regime. The primary store parameters were its mass and the chordwise location of its center of gravity. The effect of including store aerodynamics on the wing/tip store configuration was also investigated. The tip store center of gravity (c.g.) was varied and positioned at three different locations: 32.5, 40, and 50%, with respect to aerodynamic tip chord. Automated Structural Optimization System and Computational Aeroelasticity Program-Transonic Small Disturbance were used in the linear and nonlinear region to perform this research. Studies showed that flutter speed increases as the store c.g. was moved forward toward the leading edge. This gives an indication that store c.g. must be placed as far forward as possible with respect to the elastic axis to delay the occurrence of flutter, while satisfying other design constraints, it was observed that the increase in tip store mass significantly reduced the flight operating speed range of the aircraft. The effect of inclusion of store aerodynamics for different wing/store configurations was found to be insignificant compared to their corresponding mass-only models in the transonic regime. The limit-cycle oscillation (LCO) onset speed was found to be sensitive to both store mass and store e.g. parameters and varied significantly for different store mass configurations. The LCO onset speed decreased significantly with increase in store mass and aft movement of store c.g. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - PARAMETER estimation KW - OSCILLATIONS KW - AERODYNAMICS KW - FLUTTER (Aerodynamics) N1 - Accession Number: 16304365; Janardhan, Srinivasan 1; Email Address: sjanard@cs.wright.edu Grandhi, Ramana V. 2; Email Address: rgrandhi@cs.wright.edu Eastep, Frank 3; Email Address: franklin.eastep@wpafb.af.mil Sanders, Brian 4; Email Address: Brian.Sanders@wpafb.af.mil; Affiliation: 1: Department of Mechanical and Materials Engineering, Wright State University, Dayton, Ohio 45435 2: Distinguished Professor, Department of Mechanical and Materials Engineering, Wright State University, Dayton, Ohio 45435 3: NRC Senior Research Associate, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 4: Senior Aerospace Engineer, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jan/Feb2005, Vol. 42 Issue 1, p253; Subject Term: AIRPLANE wings; Subject Term: PARAMETER estimation; Subject Term: OSCILLATIONS; Subject Term: AERODYNAMICS; Subject Term: FLUTTER (Aerodynamics); NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 11p; Illustrations: 7 Diagrams, 12 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16304365&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chan, K. S. AU - Feiger, J. AU - Lee, Y.-D. AU - John, R. AU - Hudak Jr., S. J. T1 - Fatigue Crack Growth Thresholds of Deflected Mixed-Mode Cracks in PWA1484. JO - Journal of Engineering Materials & Technology JF - Journal of Engineering Materials & Technology Y1 - 2005/01// VL - 127 IS - 1 M3 - Article SP - 2 EP - 7 SN - 00944289 AB - The fatigue crack growth (FCG) behavior of PWA1484 single crystals was characterized in air under mixed-mode loading at 593°C as a function of crystallographic orientation using an asymmetric four-point bend test technique. Most mixed-mode fatigue cracks deflected from the symmetry plane and propagated as transprecipitate, noncrystallographic cracks, while self-similar fatigue crack growth occurred on the (111) planes in (111)/[011] and (111)/[112] oriented crystals. The local stress intensity factors and the crack paths of the deflected mixed-mode cracks were analyzed using the finite-element fracture mechanics code, FRANC2D/L. The results indicated that the deflected crack path was close to being normal to the maximum tensile stress direction where the Mode II component diminishes. Crystallographic analysis of the deflected crack paths revealed that the Mode I and the deflected induced-mode cracks were usually of different crystallographic orientations and could exhibit different Mode I FCG thresholds when the crystallography of the crack paths differed substantially. These results were used to identify the driving force and conditions for cracking mode transition. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering Materials & Technology is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALS KW - MATERIALS -- Fatigue KW - STRENGTH of materials KW - CRYSTALLOGRAPHY KW - MATERIALS KW - ENGINEERING KW - FRACTURE mechanics N1 - Accession Number: 16632239; Chan, K. S. 1 Feiger, J. 2 Lee, Y.-D. 2 John, R. 3 Hudak Jr., S. J. 4; Affiliation: 1: ASME Fellow 2: Southwest Research Institute®, San Antonio, TX 78238 3: Air Force Research Laboratory, MateriaIs and Manufacturing Directorate (AFRL/MLLMN), Wright-Patterson AFB, Dayton, OH 45433 4: Southwest Research Institute, San Antonio, TX 78238; Source Info: Jan2005, Vol. 127 Issue 1, p2; Subject Term: CRYSTALS; Subject Term: MATERIALS -- Fatigue; Subject Term: STRENGTH of materials; Subject Term: CRYSTALLOGRAPHY; Subject Term: MATERIALS; Subject Term: ENGINEERING; Subject Term: FRACTURE mechanics; Number of Pages: 6p; Illustrations: 1 Chart, 9 Graphs; Document Type: Article L3 - 10.1115/1.1836765 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16632239&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - George, Tommy J. AU - Herman Shen, M.-H. AU - Scott-Emuakpor, Onome AU - Nicholas, Theodore AU - Cross, Charles J. AU - Calcaterra, Jeffrey T1 - Goodman Diagram Via Vibration-Based Fatigue Testing. JO - Journal of Engineering Materials & Technology JF - Journal of Engineering Materials & Technology Y1 - 2005/01// VL - 127 IS - 1 M3 - Article SP - 58 EP - 64 SN - 00944289 AB - A new vibration-based fatigue testing methodology for assessing high-cycle turbine engine material fatigue strength at various stress ratios is presented. The idea is to accumulate fatigue energy on a base-excited plate specimen at high frequency resonant modes and to complete a fatigue test in a much more efficient way at very low cost. The methodology consists of (1) a geometrical design procedure, incorporating a finite-element model to characterize the shape of the specimen for ensuring the required stress state/ pattern; (2) a vibration feedback empirical procedure for achieving the high-cycle fatigue experiments with variable-amplitude loading; and finally (3) a pre-strain procedure for achieving various uniaxial stress ratios. The performance of the methodology is demonstrated with experimental results for mild steel, 6061-T6 aluminum, and Ti-6A1-4V plate specimens subjected to a fully reversed bending, uniaxial stress state. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering Materials & Technology is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE testing machines KW - MATERIALS -- Fatigue KW - MATERIALS -- Testing KW - STRENGTH of materials KW - STRUCTURAL failures KW - FRACTURE mechanics N1 - Accession Number: 16632246; George, Tommy J. 1 Herman Shen, M.-H. 2; Email Address: shen.1@osu.edu Scott-Emuakpor, Onome 2 Nicholas, Theodore 3 Cross, Charles J. 1 Calcaterra, Jeffrey 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 2: Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210 3: Air Force Institute of Technology, Wright-Patterson AFB, OH 45433; Source Info: Jan2005, Vol. 127 Issue 1, p58; Subject Term: FATIGUE testing machines; Subject Term: MATERIALS -- Fatigue; Subject Term: MATERIALS -- Testing; Subject Term: STRENGTH of materials; Subject Term: STRUCTURAL failures; Subject Term: FRACTURE mechanics; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1115/1.1836791 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16632246&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brungart, Douglas S. AU - Simpson, Brian D. AU - Darwin, Christopher J. AU - Arbogast, Tanya L. AU - Kidd Jr., Gerald T1 - Across-ear interference from parametrically degraded synthetic speech signals in a dichotic cocktail-party listening task. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2005/01// VL - 117 IS - 1 M3 - Article SP - 292 EP - 304 SN - 00014966 AB - Recent results have shown that listeners attending to the quieter of two speech signals in one ear (the target ear) are highly susceptible to interference from normal or time-reversed speech signals presented in the unattended ear. However, speech-shaped noise signals have little impact on the segregation of speech in the opposite ear. This suggests that there is a fundamental difference between the across-ear interference effects of speech and nonspeech signals. In this experiment, the intelligibility and contralateral-ear masking characteristics of three synthetic speech signals with parametrically adjustable speech-like properties were examined: (1) a modulated noise-band (MNB) speech signal composed of fixed-frequency bands of envelope-modulated noise; (2) a modulated sine-band (MSB) speech signal composed of fixed-frequency amplitude-modulated sinewaves; and (3) a “sinewave speech” signal composed of sine waves tracking the first four formants of speech. In all three cases, a systematic decrease in performance in the two-talker target-ear listening task was found as the number of bands in the contralateral speech-like masker increased. These results suggest that speech-like fluctuations in the spectral envelope of a signal play an important role in determining the amount of across-ear interference that a signal will produce in a dichotic cocktail-party listening task. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPEECH KW - INTERFERENCE (Sound) KW - LISTENING KW - EAR KW - HEARING N1 - Accession Number: 20263817; Brungart, Douglas S. 1; Email Address: douglas.brungart@wpafb.af.mil Simpson, Brian D. 1 Darwin, Christopher J. 2 Arbogast, Tanya L. 3 Kidd Jr., Gerald 3; Affiliation: 1: Air Force Research Laboratory, AFRL/HECB, 2610 Seventh Street, WPAFB, Ohio 45433 2: University of Sussex, Falmer, BN1 9QH, England 3: Hearing Research Center, Boston University, 635 Commonwealth Avenue, Boston, Massachusetts 02215; Source Info: Jan2005, Vol. 117 Issue 1, p292; Subject Term: SPEECH; Subject Term: INTERFERENCE (Sound); Subject Term: LISTENING; Subject Term: EAR; Subject Term: HEARING; Number of Pages: 13p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1121/1.1835509 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20263817&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Christopher, Leslie A. T1 - The Role of Proton Pump Inhibitors in the Treatment of Heartburn During Pregnancy. JO - Journal of the American Academy of Nurse Practitioners JF - Journal of the American Academy of Nurse Practitioners Y1 - 2005/01// VL - 17 IS - 1 M3 - Article SP - 4 EP - 8 PB - Wiley-Blackwell SN - 10412972 AB - Purpose To review the problem of heartburn in gravid women, discuss the present treatment options, and examine the use of proton pump inhibitors (PPIs) as one of the treatment options for moderate to severe heartburn. Data sources Extensive review of worldwide scientific literature on the use and safety of PPIs during pregnancy and heartburn during pregnancy. Conclusions Preliminary information indicates that use of PPIs during pregnancy is safe for both the fetus and the woman and that obstetrical practitioners are using them more frequently. Randomized controlled trials are needed to examine the efficacy of PPIs to treat heartburn during pregnancy, especially as they are compared to histamine2 receptor antagonists. Implications for Practice Heartburn during pregnancy is at risk for being undertreated, given that delivery is the cure. As PPIs are more widely used by women, questions will arise regarding their use in the first trimester as well as throughout pregnancy. This article brings nurse practitioners up to date on the safety of PPIs through the literature review and suggests various treatment options that can be discussed with the patient. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Academy of Nurse Practitioners is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTON pump inhibitors KW - HEARTBURN KW - PREGNANT women KW - INDIGESTION KW - PREGNANCY complications KW - HISTAMINE KW - Gastroesophageal refiux KW - heartburn KW - histamine2 receptor antagonists KW - pregnancy. KW - proton pump inhibitors N1 - Accession Number: 16460235; Christopher, Leslie A. 1,2; Email Address: leslie.christopher@lackland.af.mil.; Affiliation: 1: Women's Health Nurse Practitioner 2: Major (select) in the United States Air Force.; Source Info: Jan2005, Vol. 17 Issue 1, p4; Subject Term: PROTON pump inhibitors; Subject Term: HEARTBURN; Subject Term: PREGNANT women; Subject Term: INDIGESTION; Subject Term: PREGNANCY complications; Subject Term: HISTAMINE; Author-Supplied Keyword: Gastroesophageal refiux; Author-Supplied Keyword: heartburn; Author-Supplied Keyword: histamine2 receptor antagonists; Author-Supplied Keyword: pregnancy.; Author-Supplied Keyword: proton pump inhibitors; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16460235&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grote, James G. AU - Diggs, Darnell E. AU - Nelson, Robert L. AU - Zetts, John S. AU - Hopkins, F. Kenneth AU - Ogata, Naoya AU - Hagen, Joshua A. AU - Heckman, Emily AU - Yaney, Perry P. AU - Stone, Morley O. AU - Dalton, Larry R. T1 - DNA Photonics [Deoxyribonucleic Acid]. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2005/01// VL - 426 IS - 1 M3 - Article SP - 3 EP - 17 SN - 15421406 AB - Purified deoxyribonucleic acid (DNA) derived from salmon and scallop sperm has demonstrated excellent passive and active optical properties. Characterization of the optical and electromagnetic properties of DNA suggests suitability for photonic applications. One of interesting features of DNA we discovered was an intercalation of aromatic compounds into stacked layers within the double helix of DNA molecules. We found that various optical dyes inserted into the double helix of DNA molecules rendered active optical waveguide materials with excellent nonlinear optical properties. Our research included the investigation of DNA for use as an optical waveguide material as well as intercalation of fluorescent dyes, photochromic dyes, nonlinear optic chromophores, two photon dyes and rare earth compounds into DNA for use as a nonlinear optical material. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DNA KW - NUCLEIC acids KW - PHOTONICS KW - MOLECULES KW - WAVEGUIDES KW - GENES KW - cladding KW - conductive polymer KW - deoxyribonucleic acid KW - electro-optic modulator KW - fluorescence KW - nonlinear KW - optical amplifier KW - wave guide. N1 - Accession Number: 17115807; Grote, James G. 1; Email Address: james.grote@wpafb.af.mil Diggs, Darnell E. 1 Nelson, Robert L. 1 Zetts, John S. 1 Hopkins, F. Kenneth 1 Ogata, Naoya 2 Hagen, Joshua A. 3 Heckman, Emily 4 Yaney, Perry P. 4 Stone, Morley O. 1 Dalton, Larry R. 5; Affiliation: 1: US Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLPS, Wright-Patterson Air Force Base, Ohio, USA. 2: Chitose Institute of Science and Technology, Department of Photonic Materials Sciences, Bibi, Chitose, Hokkaido, Japan. 3: Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, Ohio, USA. 4: Electro-Optics Department, University of Dayton, Dayton, Ohio, USA. 5: Department of Chemistry, University of Washington, Seattle, WA, USA; Source Info: 2005, Vol. 426 Issue 1, p3; Subject Term: DNA; Subject Term: NUCLEIC acids; Subject Term: PHOTONICS; Subject Term: MOLECULES; Subject Term: WAVEGUIDES; Subject Term: GENES; Author-Supplied Keyword: cladding; Author-Supplied Keyword: conductive polymer; Author-Supplied Keyword: deoxyribonucleic acid; Author-Supplied Keyword: electro-optic modulator; Author-Supplied Keyword: fluorescence; Author-Supplied Keyword: nonlinear; Author-Supplied Keyword: optical amplifier; Author-Supplied Keyword: wave guide.; Number of Pages: 15p; Document Type: Article L3 - 10.1080/15421400590890615 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17115807&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Poggie, Jonathan AU - Smits, Alexander J. T1 - Experimental evidence for Plotkin model of shock unsteadiness in separated flow. JO - Physics of Fluids JF - Physics of Fluids Y1 - 2005/01// VL - 17 IS - 1 M3 - Article SP - 018107 PB - American Institute of Physics SN - 10706631 AB - Experimental evidence is presented in support of a model of separation shock unsteadiness developed by Plotkin [AIAA J. 13, 1036 (1975)]. Under this model, the position of the separation shock follows linearly damped Brownian motion. The model describes the manner in which relatively broad-band perturbations in the incoming flow lead to relatively low-frequency motion of the separation shock. Close agreement was found between the predictions of the model and the autospectra and autocorrelations of wall pressure fluctuations and shock position fluctuations for several blunt fin flows at Mach 3 and Mach 5. Given the similarity of the power spectra of wall-pressure fluctuations for a variety of separated, supersonic flows, this description may have broad applicability. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Fluids is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHOCK (Mechanics) KW - BROWNIAN motion KW - AUTOCORRELATION (Statistics) KW - WALL pressure (Aerodynamics) KW - SUPERSONIC aerodynamics KW - PERTURBATION (Mathematics) KW - SPECTRUM analysis N1 - Accession Number: 15430782; Poggie, Jonathan 1 Smits, Alexander J. 2; Affiliation: 1: Computational Sciences Branch, Air Force Research Laboratory, AFRL/VAAC, Room 225 Building 146, 2210 Eighth Street, Wright-Patterson Air Force Base, Ohio 45433-7512. 2: Department of Mechanical and Aerospace Engineering, Princeton University, P.O. Box CN5263, Princeton, New Jersey 08544-5263.; Source Info: Jan2005, Vol. 17 Issue 1, p018107; Subject Term: SHOCK (Mechanics); Subject Term: BROWNIAN motion; Subject Term: AUTOCORRELATION (Statistics); Subject Term: WALL pressure (Aerodynamics); Subject Term: SUPERSONIC aerodynamics; Subject Term: PERTURBATION (Mathematics); Subject Term: SPECTRUM analysis; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.1833405 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15430782&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Voevodin, N.N. AU - Balbyshev, V.N. AU - Donley, M.S. T1 - Investigation of corrosion protection performance of sol–gel coatings on AA2024-T3 JO - Progress in Organic Coatings JF - Progress in Organic Coatings Y1 - 2005/01// VL - 52 IS - 1 M3 - Article SP - 28 EP - 33 SN - 03009440 AB - Abstract: The paper addresses the technologically important problem of replacement of chromate-based coatings for corrosion protection of aircraft. The Air Force requires development of environmentally compliant aircraft coating systems that perform adequately in terms of corrosion protection. Current Air Force corrosion inhibitor paint chemistry relies heavily on the use of Cr(VI) compounds in the form of strontium or barium chromate, which are incorporated into both the surface pretreatment and the primers. These corrosion inhibitor systems are very effective, but are known carcinogens and therefore must be eliminated. To address this problem, sol–gel-based surface treatments are being investigated as a potential replacement for the current chromate-based surface treatment. Experiments were performed to verify that sol–gel coatings can be used as barrier layers in complex coating systems. The results clearly demonstrated that epoxy-zirconate sol–gel coatings are a viable replacement for the currently used chromate-based surface treatments. [Copyright &y& Elsevier] AB - Copyright of Progress in Organic Coatings is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE coatings KW - AIRPLANE materials KW - CARCINOGENS KW - GELATION KW - Corrosion protection KW - Cr(VI) compounds KW - Sol–gel coatings N1 - Accession Number: 16094021; Voevodin, N.N. 1; Email Address: natasha.voevodin@wpafb.af.mil Balbyshev, V.N. 2 Donley, M.S. 3; Affiliation: 1: University of Dayton Research Institute, 300 College Park Drive, Dayton, OH 45469-0168, USA 2: Universal Technology Corporation, 1270 North Fairfield Road, Dayton, OH 45432-2600, USA 3: Air Force Research laboratory, Materials and Manufacturing Directorate, AFRL/MLBT, Coatings Research Group, Wright-Patterson Air Force Base, OH, USA; Source Info: Jan2005, Vol. 52 Issue 1, p28; Subject Term: SURFACE coatings; Subject Term: AIRPLANE materials; Subject Term: CARCINOGENS; Subject Term: GELATION; Author-Supplied Keyword: Corrosion protection; Author-Supplied Keyword: Cr(VI) compounds; Author-Supplied Keyword: Sol–gel coatings; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.porgcoat.2004.05.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16094021&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Donley, M.S. AU - Balbyshev, V.N. AU - Voevodin, N.N. T1 - Self-assembled NAnophase Particle (SNAP) surface treatments for corrosion protection of AA2024-T3 JO - Progress in Organic Coatings JF - Progress in Organic Coatings Y1 - 2005/01// VL - 52 IS - 1 M3 - Article SP - 34 EP - 38 SN - 03009440 AB - Abstract: The Self-assembled NAnophase Particle (SNAP) process is a method of forming functionalized silica nanoparticles in situ in an aqueous-based sol–gel process, and then crosslinking the nanoparticles to form a thin film. Using the SNAP approach, coating components and materials can be designed and built up from the molecular level, in a sort of “bottom-up” design process. The SNAP surface treatment coatings have been investigated in a 2000h salt spray test with a chromated primer and topcoat as a potential surface treatment replacement for the current chromate-based approach. Based on these results, paint systems incorporating the SNAP surface treatment with a chromated primer exhibited equivalent corrosion protection when used with a fully chromated system. The formulation of the SNAP surface treatment coatings used in this study did not include a corrosion inhibitor(s). The SNAP coatings were not only chromate-free, but they contained no heavy metals and were water-based. In addition, these SNAP surface treatment coatings were also found to be effective when used in an appliqué topcoat system without a chromated primer, showing no film undercutting around the area of the scribe. Other possible formulations that could be developed using potent corrosion inhibitors in the SNAP process will also be presented. [Copyright &y& Elsevier] AB - Copyright of Progress in Organic Coatings is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOPARTICLES KW - SILICON compounds KW - THIN films KW - SURFACES (Technology) KW - Chromated primer KW - Self-assembled NAnophase Particle KW - Sol–gel process N1 - Accession Number: 16094022; Donley, M.S. 1 Balbyshev, V.N. 2 Voevodin, N.N. 3; Email Address: natasha.voevodin@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLBT, 2941 p street, Ste.1, Bldg 654, Rm. 136, Wright-Patterson Air Force Base, OH 45433-7750, USA 2: Universal Technology Corp., 1270 N. Fairfield Rd., Dayton, OH 45432-2600, USA 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0168, USA; Source Info: Jan2005, Vol. 52 Issue 1, p34; Subject Term: NANOPARTICLES; Subject Term: SILICON compounds; Subject Term: THIN films; Subject Term: SURFACES (Technology); Author-Supplied Keyword: Chromated primer; Author-Supplied Keyword: Self-assembled NAnophase Particle; Author-Supplied Keyword: Sol–gel process; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.porgcoat.2004.05.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16094022&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - D'Souza, Brian C. AU - Ketsdever, Andrew D. T1 - Investigation of time-dependent forces on a nano-Newton-second impulse balance. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2005/01// VL - 76 IS - 1 M3 - Article SP - 015105 PB - American Institute of Physics SN - 00346748 AB - A torsional impulse balance has been developed as a new diagnostic tool to study fundamental physical processes in micropropulsion systems and laser–surface interactions. The impulse balance has been designed and tested with a robust calibration system to measure impulsive forces with resolution as low as several nano-Newton-seconds. The behavior of the impulse balance was thoroughly studied and characterized. A simple analytical model of the balance’s motion was developed from the general equation of motion of an underdamped, harmonically oscillating system. Also, two distinct methods of analyzing the experimental data from the nano-impulse balance have been investigated. The first method resolves the total impulse as a function of the balance’s maximum deflection. The second method enables the determination of the impulse and/or force applied as a function of time from the balance’s time-resolved motion. A calibration scheme employing electrostatic actuation techniques is used to experimentally validate the model and impulse measurement techniques. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS -- Industrial applications KW - STANDARDIZATION KW - CALIBRATION KW - LASERS KW - INDUSTRIAL engineering KW - TOOLS N1 - Accession Number: 15543905; D'Souza, Brian C. 1 Ketsdever, Andrew D. 2; Affiliation: 1: Department of Aerospace and Mechanical Engineering, University of Southern California, Los Angeles, California 90089-1191 2: Air Force Research Laboratory, Propulsion Directorate, Edwards Air Force Base, California 93524; Source Info: Jan2005, Vol. 76 Issue 1, p015105; Subject Term: LASERS -- Industrial applications; Subject Term: STANDARDIZATION; Subject Term: CALIBRATION; Subject Term: LASERS; Subject Term: INDUSTRIAL engineering; Subject Term: TOOLS; NAICS/Industry Codes: 541420 Industrial Design Services; NAICS/Industry Codes: 332210 Cutlery and hand tool manufacturing; NAICS/Industry Codes: 332216 Saw Blade and Handtool Manufacturing; NAICS/Industry Codes: 333991 Power-Driven Handtool Manufacturing; NAICS/Industry Codes: 444130 Hardware Stores; Number of Pages: 10p; Document Type: Article L3 - 10.1063/1.1834707 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15543905&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Neiberg, Michael S. T1 - The Dream of Civilized Warfare: World War I Flying Aces and the American Imagination. JO - Technology & Culture JF - Technology & Culture Y1 - 2005/01// VL - 46 IS - 1 M3 - Book Review SP - 225 EP - 226 SN - 0040165X AB - Reviews the book "The Dream of Civilized Warfare: World War I Flying Aces and the American Imagination," by Linda R. Robertson. KW - MILITARY art & science KW - NONFICTION KW - ROBERTSON, Linda R. KW - DREAM of Civilized Warfare: World War I Flying Aces & the American Imagination, The (Book) N1 - Accession Number: 17272504; Neiberg, Michael S. 1; Affiliation: 1: Professor of history, United States Air Force Academy; Source Info: Jan2005, Vol. 46 Issue 1, p225; Subject Term: MILITARY art & science; Subject Term: NONFICTION; Reviews & Products: DREAM of Civilized Warfare: World War I Flying Aces & the American Imagination, The (Book); People: ROBERTSON, Linda R.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17272504&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jakubiak, Rachel AU - Natarajan, Lalgudi V. AU - Tondiglia, Vincent AU - He, Guang S. AU - Prasad, Paras N. AU - Bunning, Timothy J. AU - Vaia, Richard A. T1 - Electrically switchable lasing from pyrromethene 597 embedded holographic-polymer dispersed liquid crystals. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/12/20/ VL - 85 IS - 25 M3 - Article SP - 6095 EP - 6097 PB - American Institute of Physics SN - 00036951 AB - One-dimensional photonic band gap (PBG) materials created from holographic polymer dispersed liquid crystals (H-PDLCs) provide enhanced light localization in an organic electro-optic device. Distributed feedback within the reflection notch of a H-PDLC grating narrowed the bandwidth of pyrromethene 597 fluorescence from 56 to 8.4 nm at a lasing threshold of 0.12 mJ cm-2, compared to 2.6 mJ cm-2 required to observe amplified spontaneous emission in a nonstructured, but comparable floodlit (PDLC) sample. Application of an electric field (10–40 V/μm) continuously decreased the diffraction efficiency of the grating and the commensurate dynamic lasing intensity thus demonstrating electrically modulated gain from an optically pumped, all-organic PBG. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMER liquid crystals KW - OPTOELECTRONIC devices KW - LIQUID crystals KW - POLYMERS KW - LIGHT sources KW - MACROMOLECULES KW - ELECTROMAGNETIC fields N1 - Accession Number: 15374375; Jakubiak, Rachel 1 Natarajan, Lalgudi V. 2 Tondiglia, Vincent 2 He, Guang S. 3 Prasad, Paras N. 3 Bunning, Timothy J. 1 Vaia, Richard A. 1; Email Address: richard.vaia@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433 2: Science Applications International Corporation, Dayton, Ohio 45431 3: Institute for Lasers, Photonics and Biophotonics, The State University of New York at Buffalo, Buffalo, New York 14260; Source Info: 12/20/2004, Vol. 85 Issue 25, p6095; Subject Term: POLYMER liquid crystals; Subject Term: OPTOELECTRONIC devices; Subject Term: LIQUID crystals; Subject Term: POLYMERS; Subject Term: LIGHT sources; Subject Term: MACROMOLECULES; Subject Term: ELECTROMAGNETIC fields; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.1839282 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15374375&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Halliburton, L. E. AU - Wang, Lijun AU - Bai, Lihua AU - Garces, N. Y. AU - Giles, N. C. AU - Callahan, M. J. AU - Wang, Buguo T1 - Infrared absorption from OH- ions adjacent to lithium acceptors in hydrothermally grown ZnO. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/12/15/ VL - 96 IS - 12 M3 - Article SP - 7168 EP - 7172 PB - American Institute of Physics SN - 00218979 AB - An intense infrared absorption band has been observed in a hydrothermally grown ZnO crystal. At 12 K, the band peaks near 3577.3 cm-1 and has a half width of 0.40 cm-1, and at 300 K, the band peaks at 3547 cm-1 and has a half width of 41.3 cm-1. This absorption band is highly polarized, with its maximum intensity occurring when the electric field of the measuring light is parallel to the c axis of the crystal. Photoinduced electron-paramagnetic-resonance experiments show that the crystal contains lithium acceptors (i.e., lithium ions occupying zinc sites). Lithium and OH- ions are present in the crystal because lithium carbonate, sodium hydroxide, and potassium hydroxide are used as solvents during the hydrothermal growth. In the as-grown crystal, some of the lithium acceptors will have an OH- ion located at an adjacent axial oxygen site (to serve as a passivator), and we assign the 3577.3-cm-1 band observed at 12 K to these neutral complexes. Our results illustrate the role of hydrogen as a charge compensator for singly ionized acceptors in ZnO. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSORPTION KW - LITHIUM KW - ELECTRONS KW - IONS KW - ELECTROMAGNETIC fields KW - PARTICLES (Nuclear physics) KW - ZINC KW - SODIUM hydroxide KW - ZINC oxide N1 - Accession Number: 15244318; Halliburton, L. E. 1; Email Address: larry.halliburton@mail.wvu.edu Wang, Lijun 1 Bai, Lihua 1 Garces, N. Y. 1 Giles, N. C. 1 Callahan, M. J. 2 Wang, Buguo 3; Affiliation: 1: Department of Physics, West Virginia University, Morgantown, West Virginia 26506 2: Air Force Research Laboratory, Sensors Directorate, Hanscom Air Force Base, Massachusetts 01731 3: Solid State Scientific, Nashua, New Hampshire 03049; Source Info: 12/15/2004, Vol. 96 Issue 12, p7168; Subject Term: ABSORPTION; Subject Term: LITHIUM; Subject Term: ELECTRONS; Subject Term: IONS; Subject Term: ELECTROMAGNETIC fields; Subject Term: PARTICLES (Nuclear physics); Subject Term: ZINC; Subject Term: SODIUM hydroxide; Subject Term: ZINC oxide; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212393 Other Chemical and Fertilizer Mineral Mining; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 325181 Alkali and chlorine manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 5p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.1806531 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15244318&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Welsh, Jeffry S. AU - Mayes, J. Steve AU - Mclaughlin, Richard N. AU - Key, Christopher T. T1 - Comparison of MCT Failure Prediction Techniques and Experimental Verification for Biaxially Loaded Glass Fabric-reinforced Composite Laminates. JO - Journal of Composite Materials JF - Journal of Composite Materials Y1 - 2004/12/15/ VL - 38 IS - 24 M3 - Article SP - 2165 EP - 2181 SN - 00219983 AB - The inability to accurately predict the onset of failure in modern fabric-reinforced composite materials has hindered the implementation of these materials into the mainstream applications. Excessive qualification and structural testing must be performed on composite members as a result of uncertainty in the performance of the material, resulting in significantly higher expenses associated with these materials. This situation can only be improved through the rigorous development of both improved failure and material response prediction capabilities and improved experimental verification. The current study addresses these issues, as well as explores recent developments in numerical predictions and experimental techniques. A combined numerical investigation of damage initiation mechanics and experimental verification of predicted results for a woven glass-vinyl ester composite material is performed. More specifically, 18-oz biased (5warp/4fill rovings) plain weave E-glass-vinyl ester laminate with warp rovings oriented in [0/90]s and [0/90/ ±45]s configurations are investigated. Experimental data for the E-glass-vinyl ester [0/90]s laminate is summarized in a two-dimensional biaxial failure envelope. The feasibility of using thickness-tapered cruciform specimens for generating the experimental biaxial test data is also addressed. Finally, numerical predictions of failure of the fabric-reinforced laminate are developed and compared against the experimental failure envelope for the cross-ply laminate. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPOSITE materials KW - ESTERS KW - ORGANIC compounds KW - FINITE element method KW - NUMERICAL analysis KW - biaxial testing KW - failure criterion KW - finite element analysis (FEA) KW - microstructure N1 - Accession Number: 15690413; Welsh, Jeffry S. 1; Email Address: Jeffry.Welsh@kirtland.af.mil Mayes, J. Steve 2 Mclaughlin, Richard N. 2 Key, Christopher T. 3; Affiliation: 1: Air Force Research Laboratory/VSSV, 3550 Aberdeen Are SE, Bldg. 472 Kirtland AFB, NM 87117-5776, USA 2: Mechanical Engineering Division, Alfred University, Alfred, NY 14802, USA 3: Anteon Corporation, Mystic, CN 06355, USA; Source Info: 2004, Vol. 38 Issue 24, p2165; Subject Term: COMPOSITE materials; Subject Term: ESTERS; Subject Term: ORGANIC compounds; Subject Term: FINITE element method; Subject Term: NUMERICAL analysis; Author-Supplied Keyword: biaxial testing; Author-Supplied Keyword: failure criterion; Author-Supplied Keyword: finite element analysis (FEA); Author-Supplied Keyword: microstructure; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 17p; Illustrations: 7 Black and White Photographs, 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1177/0021998304045589 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15690413&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dodd AU - J. A. AU - Hwang AU - E. S. AU - Castle AU - K. J. AU - DeBoer AU - G. D. T1 - O + CnH2n Products Detected via IR Emission. 1. O + C2H4. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2004/12/15/ VL - 108 IS - 50 M3 - Article SP - 10965 EP - 10972 SN - 10895639 AB - Collisions between oxygen atoms and ethene have been investigated by using infrared emission detection of the chemiluminescent product species. A prototypical alkene, ethene, nonetheless exhibits numerous reaction pathways in reactions with O atoms. Oxygen atoms were formed via photolysis of SO2 in the presence of C2H4, and the resultant IR emissions in the 900-3000-cm-1 spectral region were detected by using a time-resolved, step-scan Fourier transform spectrometer. A Welsh cell mirror arrangement was used to maximize the collection efficiency of the product IR emissions. Vibrationally excited products such as CO, CO2, HCO, and H2CO have been identified, with CO and CO2 being the dominant IR emitters. The time-evolving CO and CO2 spectra have been characterized with respect to the SO2 and C2H4 partial pressures and laser fluence. The rate constants for vibrational relaxation of CO2 high-v population by CnH2n (n = 2-4) are in the mid-10-12 cm3 s-1 range; SO2 is a very inefficient relaxer. A chemical kinetics code has been used to model the chemistry and identify the operative reaction mechanisms, including the effects of secondary chemistry. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXYGEN KW - NONMETALS KW - CHEMICAL kinetics KW - SPECTRUM analysis N1 - Accession Number: 16442686; Dodd J. A. 1 Hwang E. S. 1 Castle K. J. 1 DeBoer G. D. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts 01731-3010; Source Info: Dec2004, Vol. 108 Issue 50, p10965; Subject Term: OXYGEN; Subject Term: NONMETALS; Subject Term: CHEMICAL kinetics; Subject Term: SPECTRUM analysis; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16442686&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gupta, Manish AU - Owano, Thomas AU - Baer, Douglas S. AU - O’Keefe, Anthony AU - Williams, Skip T1 - Quantitative determination of singlet oxygen density and temperature for Oxygen-Iodine Laser Applications JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2004/12/14/ VL - 400 IS - 1-3 M3 - Article SP - 42 EP - 46 SN - 00092614 AB - Abstract: The absolute density of singlet oxygen has been quantitatively determined using off-axis integrated cavity output spectroscopy to measure the Q(2)–Q(18) lines of the (0,0) band of the Noxon system near 1910 nm. Using derived values for the absorption cross-sections and a fitted rotational temperature of 295 K, a singlet oxygen density of 3×1015 molecules cm−3 (5% conversion efficiency) was obtained in the afterglow of a 13.56 MHz RF discharge. The observed line spectrum for the Q(12) transition has a signal-to-noise ratio of 120:1 signifying that singlet oxygen densities as low as 2.5×1013 molecules cm−3 are detectable. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACTIVE oxygen KW - ABSORPTION KW - MOLECULES KW - SPECTRUM analysis N1 - Accession Number: 19278799; Gupta, Manish 1; Email Address: m.gupta@lgrinc.com Owano, Thomas 1 Baer, Douglas S. 1 O’Keefe, Anthony Williams, Skip 2; Email Address: skip.williams@wpafb.af.mil; Affiliation: 1: Optical Division, Los Gatos Research, Inc., 67 East Evelyn Ave, Suite 3, Mountain View, CA 94041, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom AFB, MA 01731-3010, USA; Source Info: Dec2004, Vol. 400 Issue 1-3, p42; Subject Term: ACTIVE oxygen; Subject Term: ABSORPTION; Subject Term: MOLECULES; Subject Term: SPECTRUM analysis; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.cplett.2004.10.076 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19278799&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cooper, Thomas M. AU - Blaudeau, Jean-Philippe AU - Hall, Benjamin C. AU - Rogers, Joy E. AU - McLean, Daniel G. AU - Liu, Yonglin AU - Toscano, John P. T1 - The triplet state of a platinum acetylide chromophore examined by time-resolved infrared spectroscopy and density functional theory JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2004/12/14/ VL - 400 IS - 1-3 M3 - Article SP - 239 EP - 244 SN - 00092614 AB - Abstract: To understand platinum acetylide molecular structure changes upon conversion to the triplet state, we measured time-resolved infrared (TRIR) spectra of the platinum acetylide complex trans-bis(tributylphosphine)bis(4-ethynyl-1-(2-phenylethynyl)benzene)platinum (abbreviated as PE2). We used density functional theory (DFT) methods to calculate the geometry, molecular orbitals and vibrational spectra of the ground and lowest energy triplet state of PE2. Solutions of PE2 were excited upon ns pulsed laser excitation at 355 nm and TRIR spectra were collected. The TRIR data show cumulenic vibrations in the triplet state as well as evidence for photoproduct formation. The DFT results support the experimental data, suggesting PE2’s triplet state has quinone character. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLATINUM KW - SPECTRUM analysis KW - AROMATIC compounds KW - MOLECULAR spectroscopy N1 - Accession Number: 19278835; Cooper, Thomas M. 1; Email Address: Thomas.Cooper@wpafb.af.mil Blaudeau, Jean-Philippe 1,2 Hall, Benjamin C. 1,3 Rogers, Joy E. 1,4 McLean, Daniel G. 1,5 Liu, Yonglin 6 Toscano, John P. 6; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, 3005 Hobson Way, Wright-Patterson Air Force Base, OH 45433, USA 2: High Performance Technologies, Inc., ASC/HP, Wright-Patterson Air Force Base, OH 45433, USA 3: Universal Technology Corporaton, Dayton, OH 45431, USA 4: UES, Inc. Dayton, OH 45432, USA 5: Science Applications International Corporation, Dayton, OH 45433, USA 6: Department of Chemistry, Johns Hopkins University, Baltimore, MD 21218, USA; Source Info: Dec2004, Vol. 400 Issue 1-3, p239; Subject Term: PLATINUM; Subject Term: SPECTRUM analysis; Subject Term: AROMATIC compounds; Subject Term: MOLECULAR spectroscopy; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.cplett.2004.10.132 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19278835&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bulanova, M. AU - Firstov, S. AU - Gornaya, I. AU - Miracle, D. T1 - The melting diagram of the Ti-corner of the Ti–Zr–Si system and mechanical properties of as-cast compositions JO - Journal of Alloys & Compounds JF - Journal of Alloys & Compounds Y1 - 2004/12/14/ VL - 384 IS - 1/2 M3 - Article SP - 106 EP - 114 SN - 09258388 AB - Phase equilibria in the Ti-corner of the Ti–Zr–Si system were studied by the methods of metallography, differential thermal analysis, X-ray and microprobe analyses of as-cast samples. The results are given in the way of the melting diagram and of polythermal sections at 10 and 20 at.% Si. At 1300 °C invariant four-phase equilibrium of eutectic type L↔〈β-Ti〉(β)+〈Ti5Si3〉(Z)+〈(Ti,Zr)2Si〉 (S2) was shown to occur in the concentration interval studied. The location of the eutectic point E was determined to take place at ∼78Ti–11Zr–11Si. The ternary compound S2 formed from the melt by peritectic reaction L+Z→S2. Microhardness of the primary silicide grains and of eutectics microconstituents has shown that zirconium additions decrease the strength of the Z-phase and of the β+Z eutectic, while they do not change the strength of the S2-silicide and of the β+S2 eutectic. Based on the results of hot hardness measurements, below 550 °C the potential for attractive high-temperature structural properties is controlled by refinement of the microstructure, while above this temperature the α↔β transformation temperature of Ti limits the application. [Copyright &y& Elsevier] AB - Copyright of Journal of Alloys & Compounds is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICIDES KW - THERMAL analysis KW - METALLOGRAPHY KW - SILICON compounds KW - Melting diagram KW - Ti–Zr–Si system KW - Ti-corner N1 - Accession Number: 14960611; Bulanova, M. 1; Email Address: bulanova@ipms.kiev.ua Firstov, S. 1 Gornaya, I. 1 Miracle, D. 2; Affiliation: 1: I.N. Frantsevich Institute for Problems of Materials Science, Krzhyzhanovsky Str. 3, 03142 Kiev, Ukraine 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, 2230 Tenth Street, Wright-Patterson AFB, OH 45433, USA; Source Info: Dec2004, Vol. 384 Issue 1/2, p106; Subject Term: SILICIDES; Subject Term: THERMAL analysis; Subject Term: METALLOGRAPHY; Subject Term: SILICON compounds; Author-Supplied Keyword: Melting diagram; Author-Supplied Keyword: Ti–Zr–Si system; Author-Supplied Keyword: Ti-corner; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jallcom.2004.02.060 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14960611&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Greenwood, Andrew D. AU - Cartwright, Keith L. AU - Luginsland, John W. AU - Baca, Ernest A. T1 - On the elimination of numerical Cerenkov radiation in PIC simulations JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2004/12/10/ VL - 201 IS - 2 M3 - Article SP - 665 EP - 684 SN - 00219991 AB - Abstract: Particle-in-cell (PIC) simulations are a useful tool in modeling plasma in physical devices. The Yee finite difference time domain (FDTD) method is commonly used in PIC simulations to model the electromagnetic fields. However, in the Yee FDTD method, poorly resolved waves at frequencies near the cut off frequency of the grid travel slower than the physical speed of light. These slowly traveling, poorly resolved waves are not a problem in many simulations because the physics of interest are at much lower frequencies. However, when high energy particles are present, the particles may travel faster than the numerical speed of their own radiation, leading to non-physical, numerical Cerenkov radiation. Due to non-linear interaction between the particles and the fields, the numerical Cerenkov radiation couples into the frequency band of physical interest and corrupts the PIC simulation. There are two methods of mitigating the effects of the numerical Cerenkov radiation. The computational stencil used to approximate the curl operator can be altered to improve the high frequency physics, or a filtering scheme can be introduced to attenuate the waves that cause the numerical Cerenkov radiation. Altering the computational stencil is more physically accurate but is difficult to implement while maintaining charge conservation in the code. Thus, filtering is more commonly used. Two previously published filters by Godfrey and Friedman are analyzed and compared to ideally desired filter properties. [Copyright &y& Elsevier] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHERENKOV radiation KW - OPTICS KW - RADIATION KW - ELECTROMAGNETIC fields KW - MAGNETIC fields N1 - Accession Number: 15424273; Greenwood, Andrew D.; Email Address: agreenwood@ieee.org Cartwright, Keith L. 1 Luginsland, John W. Baca, Ernest A. 1; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, 3550 Aberdeen Ave SE, Kirtland, AFB NM 87117-5776, USA; Source Info: Dec2004, Vol. 201 Issue 2, p665; Subject Term: CHERENKOV radiation; Subject Term: OPTICS; Subject Term: RADIATION; Subject Term: ELECTROMAGNETIC fields; Subject Term: MAGNETIC fields; Number of Pages: 20p; Document Type: Article L3 - 10.1016/j.jcp.2004.06.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15424273&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brautigam, D. H. AU - Ray, K. P. AU - Ginet, G. P. AU - Madden, D. T1 - Specification of the Radiation Belt Slot Region: Comparison of the NASA AE8 Model With TSX5/CEASE Data. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2004/12/02/Dec2004 Part 2 of 3 VL - 51 IS - 6 M3 - Article SP - 3375 EP - 3380 SN - 00189499 AB - The NASA AE8 models are compared with 4 years of CEASE data from the TSX-5 satellite, with a focus on the radiation belt slot region. The current 4 years of the TSX5 mission is divided into solar cycle phase, with CEASE models developed for the solar maximum and declining phases. It is found that the AES models predict slot fluxes that are orders of magnitude less than that observed by TSX5/CEASE. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATION KW - MAGNITUDE estimation KW - SOLAR cycle KW - SOLAR activity KW - AERONAUTICS -- United States KW - UNITED States N1 - Accession Number: 15591528; Brautigam, D. H. 1; Email Address: Donald.Brautigam@hanscom.af.mil Ray, K. P. 1; Email Address: Kevin.Ray2@hanscom.af.mil Ginet, G. P. 1; Email Address: Gregory.Ginet@hanscom.af.mil Madden, D. 2; Email Address: Dan.Madden@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Hanscom AFB, MA 01731 USA 2: Institute of Scientific Research, Boston College, Boston, MA 02467 USA; Source Info: Dec2004 Part 2 of 3, Vol. 51 Issue 6, p3375; Subject Term: RADIATION; Subject Term: MAGNITUDE estimation; Subject Term: SOLAR cycle; Subject Term: SOLAR activity; Subject Term: AERONAUTICS -- United States; Subject Term: UNITED States; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TNS.2004.840024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15591528&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Krause, Linda Habash AU - Cooke, David L. AU - Enloe, C. Lon AU - Font, Gabriel I. AU - McHarg, M. Geoff AU - Putz, Victor AU - Ray, Kevin P. AU - Toth Jr., Michael J. T1 - Survey of DSCS-III B-7 Differential Surface Charging. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2004/12/02/Dec2004 Part 2 of 3 VL - 51 IS - 6 M3 - Article SP - 3399 EP - 3407 SN - 00189499 AB - An analysis of differential charging between dielectric surface materials and the frame of a DSCS-III geosynchronous spacecraft is presented. Charging levels measured by surface potential monitors (SPMs) covered with samples of Kapton and Astroquartz have been recorded for one half of a solar cycle. Both seasonal and solar cycle effects are seen in the daily peak levels of the SPM voltages, with local maxima occurring near the equinoxes and a general trend increasing as solar max is approached. Charge neutralization by an onboard Xe plasma contactor was demonstrated to be effective throughout the mission, with a mean voltage reduction of 86% for Astroquartz and 74% for Kapton. Though a statistical analysis shows a general correlation between the fluence of charging electrons with SPM voltages, the event-specific correlation contains enough variance to cast doubt on the usefulness of an electron sensor as a differential charging alarm. We have found that a Kapton-covered SPM may be better suited than an electron sensor as a differential charging alarm. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLES (Nuclear physics) KW - DIELECTRICS KW - GEOSTATIONARY satellites KW - ELECTRONS KW - SOLAR cycle KW - SOLAR activity N1 - Accession Number: 15591532; Krause, Linda Habash 1; Email Address: Linda.Krause@usafa.af.mil Cooke, David L. 2 Enloe, C. Lon 1 Font, Gabriel I. 1 McHarg, M. Geoff 1 Putz, Victor 1 Ray, Kevin P. 2 Toth Jr., Michael J. 1; Affiliation: 1: Department of Physics, U.S. Air Force Academy, CO 80840 USA 2: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA 07131.; Source Info: Dec2004 Part 2 of 3, Vol. 51 Issue 6, p3399; Subject Term: PARTICLES (Nuclear physics); Subject Term: DIELECTRICS; Subject Term: GEOSTATIONARY satellites; Subject Term: ELECTRONS; Subject Term: SOLAR cycle; Subject Term: SOLAR activity; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TNS.2004.840838 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15591532&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jumper, John P. AU - Stirrup, Jock T1 - Foreword. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2004///Winter2004 VL - 18 IS - 4 M3 - Article SP - 4 EP - 5 PB - Superintendent of Documents SN - 1555385X AB - The article informs that last year Great Britain's Royal Air Force (RAF) and the U.S. Air Force were once again side by side over the skies of Iraq. During 21 days of combat, RAF demonstrated the power of organized and integrated air and space forces in joint and coalition warfare. RAF did not do it alone, but it contributed more than its fair share to enable the rapid success of ground forces. At the same time, RAF was able to join with special operations forces, air and land, to keep activity in western Iraq from interfering with the main effort. RAF is far from having this right, but it did make tremendous progress during the dust storm in Operation Iraqi Freedom, where traditional stand-alone platforms, manned, unmanned, and space, were lashed together in a real-time network that located and destroyed Iraqi forces moving to reinforce depleted Republican Guard divisions. KW - UNIFIED operations (Military science) KW - IRAQ War, 2003-2011 KW - GREAT Britain KW - UNITED States KW - UNITED States. Air Force KW - GREAT Britain. Royal Air Force N1 - Accession Number: 15258535; Jumper, John P. 1 Stirrup, Jock 2; Affiliation: 1: Chief of Staff, United States Air Force 2: Chief of the Air Staff Royal Air Force; Source Info: Winter2004, Vol. 18 Issue 4, p4; Subject Term: UNIFIED operations (Military science); Subject Term: IRAQ War, 2003-2011; Subject Term: GREAT Britain; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force Company/Entity: GREAT Britain. Royal Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 2p; Illustrations: 2 Black and White Photographs; Document Type: Article; Full Text Word Count: 544 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15258535&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Atkins, Sean T1 - Unwanted Allies: What Influences Negative Domestic Reactions to Deploying Forces into Allied States? JO - Air Power History JF - Air Power History Y1 - 2004///Winter2004 VL - 51 IS - 4 M3 - Article SP - 40 EP - 51 PB - Air Force Historical Foundation SN - 1044016X AB - The article discusses the reasons behind the negative reaction to the deployment of military forces into an allied state. Analysis of the U.S. deployment of cruise missiles in Great Britain in the early 1980s illuminates some of the more influential factors. These are: one, the perceived level of threat incurred by hosting the allies, two, the level of control the host state has over the actions of the visiting forces, three, the level of mistrust and anti-ally sentiment present in the hosting state, four, how protestable are the visiting forces. KW - DEPLOYMENT (Military strategy) KW - MILITARY relations KW - GUIDED missiles KW - CRUISE missiles KW - GREAT Britain KW - UNITED States N1 - Accession Number: 15355622; Atkins, Sean 1; Affiliation: 1: Lieutenant in the United States Air Force; Source Info: Winter2004, Vol. 51 Issue 4, p40; Subject Term: DEPLOYMENT (Military strategy); Subject Term: MILITARY relations; Subject Term: GUIDED missiles; Subject Term: CRUISE missiles; Subject Term: GREAT Britain; Subject Term: UNITED States; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15355622&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McDevitt, Edward R. AU - Taylor, Dean C. AU - Miller, Mark D. AU - Gerber, John P. AU - Ziemke, Gregg AU - Hinkin, Daniel AU - Uhorchak, John M. AU - Arciero, Robert A. AU - Pierre, Patrick St. T1 - Functional Bracing After Anterior Cruciate Ligament Reconstruction: A Prospective, Randomized, Multicenter Study. JO - American Journal of Sports Medicine JF - American Journal of Sports Medicine Y1 - 2004/12// VL - 32 IS - 8 M3 - Article SP - 1887 EP - 1892 SN - 03635465 AB - Background: Bracing after anterior cruciate ligament reconstruction is expensive and is not proven to prevent injuries or influence outcomes. Purpose: To determine whether postoperative functional knee bracing influences outcomes. Study Design: Prospective, randomized, multicenter clinical trial. Methods: One hundred volunteers from the 3 US service academies with acute anterior cruciate ligament tears were randomized into braced or nonbraced groups. Only those subjects with anterior cruciate ligament tears treated surgically within the first 8 weeks of injury were included. Patients with chondral injuries, significant meniscal tears, or multiple knee ligament injuries were excluded. Surgical procedures and the postoperative physical therapy protocols were identical for both groups. The braced group was instructed to wear an off-the-shelf functional knee brace for all cuffing, pivoting, or jumping activities for the first year after surgery. Results: Ninety-five subjects were available with a minimum 2-year follow-up. There were no statistically significant differences between groups in knee stability, functional testing with the single-legged hop test, International Knee Documentation Committee scores, Lysholm scores, knee range of motion, or isokinetic strength testing. Two braced subjects had reinjuries, and 3 nonbraced subjects had reinjuries. Conclusions: In this young, active population, postoperative bracing does not appear to change the clinical outcomes after anterior cruciate ligament reconstruction. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Sports Medicine is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRUCIATE ligaments KW - JOINTS (Anatomy) KW - STIFLE joint KW - ANTERIOR cruciate ligament KW - LIGAMENTS KW - CLINICAL medicine KW - anterior cruciate ligament (ACL) KW - functional bracing KW - knee braces KW - knee reconstruction KW - postoperative bracing N1 - Accession Number: 15252457; McDevitt, Edward R. 1 Taylor, Dean C. 1,2; Email Address: dean.taylor@na.amedd.army.mil Miller, Mark D. 3 Gerber, John P. 2 Ziemke, Gregg 1 Hinkin, Daniel 4 Uhorchak, John M. 2 Arciero, Robert A. 2 Pierre, Patrick St. 2; Affiliation: 1: United States Naval Academy, Annapolis, Maryland. 2: United States Military Academy, West Point, New York. 3: University of Virginia, Charlottesville, Virginia. 4: United States Air Force Academy, Colorado Springs, Colorado.; Source Info: Dec2004, Vol. 32 Issue 8, p1887; Subject Term: CRUCIATE ligaments; Subject Term: JOINTS (Anatomy); Subject Term: STIFLE joint; Subject Term: ANTERIOR cruciate ligament; Subject Term: LIGAMENTS; Subject Term: CLINICAL medicine; Author-Supplied Keyword: anterior cruciate ligament (ACL); Author-Supplied Keyword: functional bracing; Author-Supplied Keyword: knee braces; Author-Supplied Keyword: knee reconstruction; Author-Supplied Keyword: postoperative bracing; Number of Pages: 6p; Document Type: Article L3 - 10.1177/0363546504265998 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15252457&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Herzinger, Kurt AU - Sanford, Ryan T1 - Minimal Generating Sets for Relative Ideals in Numerical Semigroups of Multiplicity Eight#. JO - Communications in Algebra JF - Communications in Algebra Y1 - 2004/12// VL - 32 IS - 12 M3 - Article SP - 4713 EP - 4731 SN - 00927872 AB - Let S be a numerical semigroup and let I be a relative ideal of S. Let S − I denote the dual of I and letμS(⋅) represent the size of a minimal generating set. We investigate the inequalityμS(I)μS(S − I) ≥ μS(I + (S − I)) under the assumption that S has multiplicity 8. We will show that if I is non-principal, then the strict inequalityμS(I)μS(S − I) > μS(I + (S − I)) always holds. [ABSTRACT FROM AUTHOR] AB - Copyright of Communications in Algebra is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMIGROUPS (Algebra) KW - GROUP theory KW - MULTIPLICITY (Mathematics) KW - LOCAL rings (Algebra) KW - SET theory KW - ALGEBRA KW - Minimal generating set KW - Numerical semigroup KW - Relative ideal N1 - Accession Number: 15399516; Herzinger, Kurt 1; Email Address: kurt.herzinger@usafa.af.mil Sanford, Ryan 1; Affiliation: 1: Department of Mathematical Sciences, United States Air Force Academy, USAF Academy, Colorado, USA.; Source Info: Dec2004, Vol. 32 Issue 12, p4713; Subject Term: SEMIGROUPS (Algebra); Subject Term: GROUP theory; Subject Term: MULTIPLICITY (Mathematics); Subject Term: LOCAL rings (Algebra); Subject Term: SET theory; Subject Term: ALGEBRA; Author-Supplied Keyword: Minimal generating set; Author-Supplied Keyword: Numerical semigroup; Author-Supplied Keyword: Relative ideal; Number of Pages: 19p; Document Type: Article L3 - 10.1081/AGB-200036841 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15399516&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wheelock, Adrian AU - Cooke, David L. AU - Gatsonis, Nikolaos A. T1 - Investigation of ion beam neutralization processes with 2D and 3D PIC simulations JO - Computer Physics Communications JF - Computer Physics Communications Y1 - 2004/12// VL - 164 IS - 1-3 M3 - Article SP - 336 EP - 343 SN - 00104655 AB - While it is common knowledge that ion beams are easily neutralized for both current and charge density using a variety of means, the precise process of neutralization remains unknown. With the increasing importance of electric propulsion, and in particular micropropulsion systems, this question is of significant importance. Additionally, it has bearing on thruster design, space instrument calibration, electrodynamic tethers, and ionospheric research. A review of the present state of knowledge on this topic is presented as well as results from ion beam simulations using 2D and 3D Particle-in-Cell (PIC) codes. We investigate both the early “filling” problem of the beam starting to move away from the spacecraft and the steady state problem where the beam encounters a wall at an infinite distance from the spacecraft. [Copyright &y& Elsevier] AB - Copyright of Computer Physics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC motors KW - SPACE vehicles KW - PHYSICAL measurements KW - CALIBRATION KW - Electric propulsion KW - Ion beam neutralization KW - Particle-in-Cell (PIC) N1 - Accession Number: 15561327; Wheelock, Adrian 1; Email Address: adrian.wheelock@hanscom.af.mil Cooke, David L. 1; Email Address: david.cooke@hanscom.af.mil Gatsonis, Nikolaos A. 2; Email Address: gatsonis@wpi.edu; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA 01731, USA 2: Mechanical Engineering Department, Worcester Polytechnic Institute, Worcester, MA 01609, USA; Source Info: Dec2004, Vol. 164 Issue 1-3, p336; Subject Term: ELECTRIC motors; Subject Term: SPACE vehicles; Subject Term: PHYSICAL measurements; Subject Term: CALIBRATION; Author-Supplied Keyword: Electric propulsion; Author-Supplied Keyword: Ion beam neutralization; Author-Supplied Keyword: Particle-in-Cell (PIC); NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.cpc.2004.06.045 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15561327&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Repperger, D. W. T1 - Adaptive Displays and Controllers Using Alternative Feedback. JO - CyberPsychology & Behavior JF - CyberPsychology & Behavior Y1 - 2004/12// VL - 7 IS - 6 M3 - Article SP - 645 EP - 652 PB - Mary Ann Liebert, Inc. SN - 10949313 AB - Investigations on the design of haptic (force reflecting joystick or force display) controllerswere conducted by viewing the display of force information within the context of several differentparadigms. First, using analogies from electrical and mechanical systems, certainschemes of the haptic interface were hypothesized which may improve the human–machineinteraction with respect to various criteria. A discussion is given on how this interactionbenefits the electrical and mechanical system. To generalize this concept to the design ofhuman–machine interfaces, three studies with haptic mechanisms were then synthesized andanalyzed. [ABSTRACT FROM AUTHOR] AB - Copyright of CyberPsychology & Behavior is the property of Mary Ann Liebert, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TOUCH KW - INFORMATION display systems KW - ELECTRONIC systems KW - ELECTRONIC controllers KW - COMPUTER interfaces KW - SENSES & sensation N1 - Accession Number: 15897147; Repperger, D. W. 1; Email Address: Daniel.Repperger@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio.; Source Info: Dec2004, Vol. 7 Issue 6, p645; Subject Term: TOUCH; Subject Term: INFORMATION display systems; Subject Term: ELECTRONIC systems; Subject Term: ELECTRONIC controllers; Subject Term: COMPUTER interfaces; Subject Term: SENSES & sensation; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; Number of Pages: 8p; Illustrations: 1 Black and White Photograph, 9 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1089/cpb.2004.7.645 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15897147&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kienk, Kaci AU - Snow, Jamie AU - Morgan, Katrina AU - Bowen, Richard AU - Stephens, Michael AU - Foster, Falicia AU - Gordy, Paul AU - Beckett, Susan AU - Komar, Nicholas AU - Gubler, Duane AU - Bunning, Michel T1 - Alligators as West Nile Virus Amplifiers. JO - Emerging Infectious Diseases JF - Emerging Infectious Diseases Y1 - 2004/12// VL - 10 IS - 12 M3 - Article SP - 2150 EP - 2155 PB - Centers for Disease Control & Prevention (CDC) SN - 10806040 AB - Recent evidence suggests that American alligators (Alligator mississippiensis) may be capable of transmitting West Nile virus (WNV) to other alligators. We experimentally exposed 24 juvenile alligators to WNV parenterally or orally. All became infected, and all but three sustained viremia titers >5.0 log10 PFU/mL (a threshold considered infectious for Culex quinquefasciatus mosquitoes) for 1 to 8 days. Noninoculated tankmates also became infected. The viremia profiles and multiple routes of infection suggest alligators may play an important role in WNV transmission in areas with high population densities of juvenile alligators. [ABSTRACT FROM AUTHOR] AB - Copyright of Emerging Infectious Diseases is the property of Centers for Disease Control & Prevention (CDC) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WEST Nile virus KW - FLAVIVIRUSES KW - COMMUNICABLE diseases -- Transmission KW - AMERICAN alligator KW - ZOONOSES N1 - Accession Number: 15279236; Kienk, Kaci 1; Email Address: kaci.klenk@aphis.usda.gov Snow, Jamie 1 Morgan, Katrina 1 Bowen, Richard 2 Stephens, Michael 1 Foster, Falicia 1 Gordy, Paul Beckett, Susan 1 Komar, Nicholas 1 Gubler, Duane 1 Bunning, Michel 1,3; Affiliation: 1: Centers for Disease Control and Prevention, Fort Collins, Colorado, USA 2: Colorado State University, Fort Collins, Colorado, USA 3: United States Air Force, Washington, DC, USA; Source Info: Dec2004, Vol. 10 Issue 12, p2150; Subject Term: WEST Nile virus; Subject Term: FLAVIVIRUSES; Subject Term: COMMUNICABLE diseases -- Transmission; Subject Term: AMERICAN alligator; Subject Term: ZOONOSES; Number of Pages: 6p; Illustrations: 1 Chart, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15279236&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Westerfeld, David AU - Suchalkin, Sergey AU - Kaspi, Ron AU - Ongstad, Andrew P. AU - Belenky, Gregory L. T1 - Absorption and Single-Pass Gain Measurements in Optically Pumped Type-Il Midinfrared Laser Structures. JO - IEEE Journal of Quantum Electronics JF - IEEE Journal of Quantum Electronics Y1 - 2004/12// VL - 40 IS - 12 M3 - Article SP - 1657 EP - 1662 SN - 00189197 AB - A single-pass method was employed to measure the gain and absorption in optically pumped midinfrared type-II semiconductor lasers. The technique requires minimal sample processing and allows a single sample to be used for both absorption and gain measurements. The gain measurements confirm previous observations that the differential gain of these structures drops off rapidly with increasing temperature. A comparison of absorption in samples with differing waveguide designs was used to estimate the effective index step between the core and cladding. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Journal of Quantum Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR lasers KW - WAVEGUIDES KW - ABSORPTION KW - LASERS KW - ELECTRIC waves KW - TEMPERATURE KW - Gain measurement KW - laser measurements KW - optical saturation KW - optical variables measurement KW - semiconductor lasers N1 - Accession Number: 15252229; Westerfeld, David 1; Email Address: davidwesterfeld@ieee.org Suchalkin, Sergey 1 Kaspi, Ron 2 Ongstad, Andrew P. 1 Belenky, Gregory L. 1; Affiliation: 1: State University of New York at Stony Brook, Stony Brook, NY 11794 USA. 2: Air Force Research Laboratory, Directed Energy Directorate, Advanced Tactical Systems Branch, AFRL/DELS, Kirtland Air Force Base, Albuquerque, NM 87111 USA.; Source Info: Dec2004, Vol. 40 Issue 12, p1657; Subject Term: SEMICONDUCTOR lasers; Subject Term: WAVEGUIDES; Subject Term: ABSORPTION; Subject Term: LASERS; Subject Term: ELECTRIC waves; Subject Term: TEMPERATURE; Author-Supplied Keyword: Gain measurement; Author-Supplied Keyword: laser measurements; Author-Supplied Keyword: optical saturation; Author-Supplied Keyword: optical variables measurement; Author-Supplied Keyword: semiconductor lasers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1109/JQE.2004.837345 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15252229&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tzu-Yen Chang AU - Xu Wang AU - Evans, David A. AU - Roberson, S. L. AU - Zheng, Jim P. T1 - Characterization of Tantalum Oxide Ruthenium Oxide Hybrid Capacitors. JO - IEEE Transactions on Industrial Electronics JF - IEEE Transactions on Industrial Electronics Y1 - 2004/12// VL - 51 IS - 6 M3 - Article SP - 1313 EP - 1317 SN - 02780046 AB - The ac and dc performance and leakage current of Evans tantalum oxide-ruthenium oxide hybrid capacitors were characterized at room temperature. The RC time constants were in the range from 2 to 0.45 ms and dependent on the maximum operational voltage of the capacitor. The gravimetric and volumetric energy densities of hybrid capacitors were in the range of 0.074-0.233 J/g and 0.388-1.384 J/cm³, respectively. The gravimetric and volumetric power densities of hybrid capacitors were in the range of 19-259 W/g and 100-1540 W/cm³, respectively. A comparison of the performance between hybrid capacitors to conventional aluminum and tantalum electrolytic capacitors is made in this paper. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Industrial Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CAPACITORS KW - TANTALUM oxide KW - RUTHENIUM KW - DIELECTRIC devices KW - VOLUMETRIC analysis KW - GRAVIMETRIC analysis N1 - Accession Number: 15252537; Tzu-Yen Chang 1; Email Address: zheng@eng.fsu.edu Xu Wang 2,3 Evans, David A. 4 Roberson, S. L. 5 Zheng, Jim P. 2,3; Affiliation: 1: AU Optronics Corporation, Hsinchu 300, Taiwan, R.O.C. 2: Department of Electrical and Computer Engineering, Florida A&M University. 3: Florida State University, Tallahassee, FL 32310 USA. 4: Evans Capacitor Company, East Providence, RI 02914 USA. 5: Air Force Research Laboratory, Eglin AFB, FL 32542 USA.; Source Info: Dec2004, Vol. 51 Issue 6, p1313; Subject Term: CAPACITORS; Subject Term: TANTALUM oxide; Subject Term: RUTHENIUM; Subject Term: DIELECTRIC devices; Subject Term: VOLUMETRIC analysis; Subject Term: GRAVIMETRIC analysis; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TIE.2004.837900 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15252537&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sternberg, Natalia AU - Poggie, Jonathan T1 - Plasma-Sheath Transition in the Magnetized Plasma-Wall Problem for Collisionless Ions. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/12// VL - 32 IS - 6 M3 - Article SP - 2217 EP - 2226 SN - 00933813 AB - A model for the collisionless plasma-wall problem under the action of an applied magnetic field is developed. The behavior of its solution is examined and found to be qualitatively consistent with experiment. The plasma and the sheath are then modeled separately to obtain the position of the quasi-neutral plasma boundary and the position of the edge of the electron-free sheath. It is shown that the plasma boundary can be specified as the point where the component of the ion velocity normal to the wall reaches the ion sound speed (Bohm criterion), and the sheath edge is specified as the point corresponding to Godyak's condition for the electric field. Studying the behavior near the plasma boundary and the sheath edge, the plasma solution and the solution of the space charge region are patched together to approximate the solution of the plasma-wall problem. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLISIONLESS plasmas KW - IONS KW - MAGNETIC fields KW - ELECTRIC fields KW - ELECTROMAGNETIC fields KW - ELECTRON accelerators KW - magnetized quasi-neutral plasma KW - magnetized sheath KW - Manetized plasma-wall problem KW - patching KW - quasi-neutral plasma boundary KW - sheath edge N1 - Accession Number: 15462808; Sternberg, Natalia 1 Poggie, Jonathan 2; Affiliation: 1: Department of Mathematics and Computer Science, Clark University, Worcester MA 01610 USA. 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433 USA.; Source Info: Dec2004, Vol. 32 Issue 6, p2217; Subject Term: COLLISIONLESS plasmas; Subject Term: IONS; Subject Term: MAGNETIC fields; Subject Term: ELECTRIC fields; Subject Term: ELECTROMAGNETIC fields; Subject Term: ELECTRON accelerators; Author-Supplied Keyword: magnetized quasi-neutral plasma; Author-Supplied Keyword: magnetized sheath; Author-Supplied Keyword: Manetized plasma-wall problem; Author-Supplied Keyword: patching; Author-Supplied Keyword: quasi-neutral plasma boundary; Author-Supplied Keyword: sheath edge; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TPS.2004.838687 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15462808&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lemmer, John F. AU - Gossink, Don E. T1 - Recursive Noisy OR--A Rule for Estimating Complex Probabilistic Interactions. JO - IEEE Transactions on Systems, Man & Cybernetics: Part B JF - IEEE Transactions on Systems, Man & Cybernetics: Part B Y1 - 2004/12// VL - 34 IS - 6 M3 - Article SP - 2252 EP - 2261 SN - 10834419 AB - This paper focuses on approaches that address the intractability of knowledge acquisition of conditional probability tables in causal or Bayesian belief networks. We state a rule that we term the "recursive noisy OR" (RNOR) which allows combinations of dependent causes to be entered and later used for estimating the probability of an effect. In the development of this paper, we investigate the axiomatic correctness and semantic meaning of this nile and show that the recursive noisy OR is a generalization of the well-known noisy OR. We introduce the concept of positive causality and demonstrate its utility in axiomatic correctness of the RNOR. We also introduce concepts describing the ways in which dependent causes can work together as being either "synergistic" or "interfering." We provide a formalization to quantify these concepts and show that they are presented by the RNOR. Finally, we present a method for the determination of Conditional Probability Tables from this causal theory. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Systems, Man & Cybernetics: Part B is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROBABILITY theory KW - PERMUTATIONS KW - BAYESIAN analysis KW - RECURSIVE functions KW - COMBINATIONS (Mathematics) KW - NUMERICAL analysis KW - Bayes KW - causality KW - estimation KW - uncertainty. N1 - Accession Number: 15261449; Lemmer, John F. 1; Email Address: John.Lemmer@rl.af.mil Gossink, Don E. 2; Email Address: Don.Gossink@dsto.defence.gov.au.; Affiliation: 1: Air Force Research Laboratory, Information Directorate, Rome, NY 13441-4514 USA 2: Command and Control Division, Defence Science and Technology Organization, Edinburgh 5111, Australia; Source Info: Dec2004, Vol. 34 Issue 6, p2252; Subject Term: PROBABILITY theory; Subject Term: PERMUTATIONS; Subject Term: BAYESIAN analysis; Subject Term: RECURSIVE functions; Subject Term: COMBINATIONS (Mathematics); Subject Term: NUMERICAL analysis; Author-Supplied Keyword: Bayes; Author-Supplied Keyword: causality; Author-Supplied Keyword: estimation; Author-Supplied Keyword: uncertainty.; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TSMCB.2004.834424 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15261449&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mahalingam, K. AU - Eyink, K. G. AU - Brown, G. J. AU - Dorsey, D. L. T1 - APPLICATION OF EXIT-PLANE WAVE FUNCTION IMAGES IN HIGH-RESOLUTION TRANSMISSION ELECTRON MICROSCOPY FOR QUANTITATIVE ANALYSIS OF III–V SEMICONDUCTOR INTERFACES. JO - International Journal of Nanoscience JF - International Journal of Nanoscience Y1 - 2004/12// VL - 3 IS - 6 M3 - Article SP - 723 EP - 728 PB - World Scientific Publishing Company SN - 0219581X AB - An image simulation study is performed to investigate the applicability of exit-plane wave function (EPWF) images for an atomic-level compositional mapping of interfaces in the GaAs–AlAs system. A simple procedure for quantifying the composition across an interface, which is based on the method of factorial analysis of correspondence is proposed. A test of this procedure on a simulated EPWF-phase image of Al0.4Ga0.6As/GaAs/Al0.4Ga0.6As structure, with an atomically abrupt interface on one side and a graded interface on the other, yields profiles which mimic the model-profiles. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Nanoscience is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVE functions KW - SEMICONDUCTOR junctions KW - TRANSMISSION electron microscopes KW - ELECTRON microscopes KW - NANOSCIENCE KW - WAVE mechanics KW - Exit-plane wave function images KW - factorial analysis of correspondence KW - high-resolution transmission electron microscopy KW - III–V semiconductor interfaces KW - III-V semiconductor interfaces N1 - Accession Number: 17174206; Mahalingam, K. 1 Eyink, K. G. 1 Brown, G. J. 1 Dorsey, D. L. 1; Affiliation: 1: Air Force Research Laboratory, Materials amd Mamufacturimg Directorate Wright-Patterson Air Force Base, OH 45433-7707 USA.; Source Info: Dec2004, Vol. 3 Issue 6, p723; Subject Term: WAVE functions; Subject Term: SEMICONDUCTOR junctions; Subject Term: TRANSMISSION electron microscopes; Subject Term: ELECTRON microscopes; Subject Term: NANOSCIENCE; Subject Term: WAVE mechanics; Author-Supplied Keyword: Exit-plane wave function images; Author-Supplied Keyword: factorial analysis of correspondence; Author-Supplied Keyword: high-resolution transmission electron microscopy; Author-Supplied Keyword: III–V semiconductor interfaces; Author-Supplied Keyword: III-V semiconductor interfaces; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17174206&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barnes, Paul N. AU - Sumption, Michael D. T1 - Low loss striated YBa2Cu3O7-d coated conductor with filamentary current sharing. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/12//12/1/2004 VL - 96 IS - 11 M3 - Article SP - 6550 EP - 6556 PB - American Institute of Physics SN - 00218979 AB - A simple investigation into the properties of weakly linked filaments in striated YBa2Cu3O7-d (YBCO) coated conductors has been performed. Such weak-link connections may arise in two different contexts within the coated conductors, the one case being the occurrence of unintentional connections. However, it may be desirable to intentionally induce the weak-link connections in order to allow a current sharing between the filaments. This allows the localized degradation of a given filament to be circumvented at a small cost in terms of the added losses and magnetization. This problem has been treated mathematically with a comparison of the superconductor weak linking in contrast to the normal-metal-induced current sharing. The estimates for target values of filament coupling are deduced, and the results in terms of magnetization are then determined. The YBCO samples created, using the pulsed laser deposition, are described that have these properties. The samples consist of one control and one striated sample. The magnetization response of these samples is then considered in terms of the expressions developed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CERAMIC superconductors KW - SUPERCONDUCTORS KW - MAGNETIZATION KW - MAGNETISM KW - HIGH temperature superconductivity KW - SUPERCONDUCTIVITY N1 - Accession Number: 15142853; Barnes, Paul N. 1; Email Address: paul.barnes@wpafb.af.mil Sumption, Michael D. 2; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Department of Materials Science and Engineering, Ohio State University, Columbus, Ohio 43210; Source Info: 12/1/2004, Vol. 96 Issue 11, p6550; Subject Term: CERAMIC superconductors; Subject Term: SUPERCONDUCTORS; Subject Term: MAGNETIZATION; Subject Term: MAGNETISM; Subject Term: HIGH temperature superconductivity; Subject Term: SUPERCONDUCTIVITY; Number of Pages: 7p; Illustrations: 1 Black and White Photograph, 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.1806554 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15142853&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Busani, T. AU - Devine, R.A.B. T1 - Molecular volume and electronic and vibrational polarizibilities for amorphous LaAlO3. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/12//12/1/2004 VL - 96 IS - 11 M3 - Article SP - 6642 EP - 6647 PB - American Institute of Physics SN - 00218979 AB - Grazing incidence x-ray reflectivity measurements are used to determine the density of sputter-deposited LaAlO3 and anodized LaAl films. Together with refractive index and dielectric constant measurements, it is demonstrated that a coherent picture emerges explaining the low dielectric constant of the amorphous films (∼13) as compared to the single-crystal value (∼26). The importance of molecular volume dependence of the electronic and vibrational molecular polarizabilities is underlined. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL oxide semiconductor field-effect transistors KW - FIELD-effect transistors KW - METAL oxide semiconductors KW - SEMICONDUCTORS KW - POLARIZATION (Electricity) KW - DIELECTRICS N1 - Accession Number: 15142844; Busani, T. 1,2 Devine, R.A.B. 1; Email Address: devine@chtm.unm.edu; Affiliation: 1: Air Force Research Laboratory-Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117 2: Laboratoire d'Electrostatique et des Materiaux Dielectriques, CNRS, BP 166X, 38042 Grenoble Cedex, France; Source Info: 12/1/2004, Vol. 96 Issue 11, p6642; Subject Term: METAL oxide semiconductor field-effect transistors; Subject Term: FIELD-effect transistors; Subject Term: METAL oxide semiconductors; Subject Term: SEMICONDUCTORS; Subject Term: POLARIZATION (Electricity); Subject Term: DIELECTRICS; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 6p; Illustrations: 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.1808905 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15142844&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhaunerchyk, Vitali AU - Ehlerding, Anneli AU - Geppert, Wolf D. AU - Hellberg, Fredrik AU - Thomas, Richard D. AU - Larsson, Mats AU - Viggiano, Albert A. AU - Arnold, Susan T. AU - Österdahl, Fabian AU - Hlavenka, Peter T1 - Dissociative recombination study of Na+(D2O) in a storage ring. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2004/12// VL - 121 IS - 21 M3 - Article SP - 10483 EP - 10488 PB - American Institute of Physics SN - 00219606 AB - The dissociative recombination of Na+(D2O) ion has been studied at the heavy-ion storage ring CRYRING (Manne Siegbahn Laboratory, Stockholm University). The cross section has been measured as a function of center-of-mass energy ranging from 1 meV to 0.1 eV and found to have an E-1.37 dependence. The rate coefficient has been deduced to be (2.3±0.32)×10-7(Te/300)-0.95±0.01 cm3 s-1 for Te=50–1000 K. The branching ratios have been measured at 0 eV. Of the four energetically accessible dissociation channels, three channels are found to occur although the channel that breaks the weak Na+–D2O bond is by far dominant. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISSOCIATION (Chemistry) KW - SODIUM compounds KW - CHEMICAL bonds KW - IONIC structure KW - CHEMICAL reactions KW - SCISSION (Chemistry) N1 - Accession Number: 15063860; Zhaunerchyk, Vitali 1 Ehlerding, Anneli 1 Geppert, Wolf D. 1 Hellberg, Fredrik 1 Thomas, Richard D. 1 Larsson, Mats 1 Viggiano, Albert A. 2 Arnold, Susan T. 2 Österdahl, Fabian 3 Hlavenka, Peter 4; Affiliation: 1: Department of Physics, Albanova, Stockholm University, SE-106 91 Stockholm, Sweden. 2: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom AFB, Massachusetts 01731. 3: Department of Physics, Albanova, Royal Institute of Technology, SE-106 91 Stockholm, Sweden 4: Department of Electronics and Vacuum Physics, Faculty of Mathematics and Physics, Charles University Prague V Holesovickach 2, Prague 8, Czech Republic.; Source Info: Dec2004, Vol. 121 Issue 21, p10483; Subject Term: DISSOCIATION (Chemistry); Subject Term: SODIUM compounds; Subject Term: CHEMICAL bonds; Subject Term: IONIC structure; Subject Term: CHEMICAL reactions; Subject Term: SCISSION (Chemistry); NAICS/Industry Codes: 212391 Potash, Soda, and Borate Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; Number of Pages: 6p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.1812532 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15063860&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Neiberg, Michael T1 - The Cross and the Trenches: Religious Faith and Doubt Among British and American Great War Soldiers. JO - Journal of Social History JF - Journal of Social History Y1 - 2004///Winter2004 VL - 38 IS - 2 M3 - Book Review SP - 520 EP - 522 PB - Oxford University Press / USA SN - 00224529 AB - Reviews the book "The Cross and the Trenches: Religious Faith and Doubt Among British and American Great War Soldiers," by Richard Schweitzer. KW - WAR -- Religious aspects KW - NONFICTION KW - SCHWEITZER, Richard KW - CROSS & the Trenches: Religious Faith & Doubt Among British & American Great War Soldiers, The (Book) N1 - Accession Number: 15481486; Neiberg, Michael 1; Affiliation: 1: United States Air Force Academy; Source Info: Winter2004, Vol. 38 Issue 2, p520; Subject Term: WAR -- Religious aspects; Subject Term: NONFICTION; Reviews & Products: CROSS & the Trenches: Religious Faith & Doubt Among British & American Great War Soldiers, The (Book); People: SCHWEITZER, Richard; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15481486&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cohen, Kelly AU - Siegel, Stefan AU - Wetlesen, Dave AU - Cameron, Jeff AU - Sick, Aaron T1 - Effective Sensor Placements for the Estimation of Proper Orthogonal Decomposition Mode Coefficients in von Kármán Vortex Street. JO - Journal of Vibration & Control JF - Journal of Vibration & Control Y1 - 2004/12// VL - 10 IS - 12 M3 - Article SP - 1857 EP - 1880 SN - 10775463 AB - For feedback control using low-dimensional proper orthogonal decomposition (POD) models, the mode amplitudes of the POD mode coefficients need to be estimated based on sensor readings. This paper is aimed at suppressing the von Kármán vortex street in the wake of a circular cylinder using a low- dimensional approach based on POD. We compare sensor placement methods based on the spatial distribution of the POD modes to arbitrary ad hoc methods. Flow field data were obtained from Navier-Stokes simulation as well as particle image velocimetry (PIV) measurements. A low-dimensional POD was applied to the snapshot ensembles from the experiment and simulation. Linear stochastic estimation was used to map the sensor readings of the velocity field on the POD mode coefficients. We studied 53 sensor placement configurations, 32 of which were based on POD eigenfunctions and the others using ad hoc methods. The effectiveness of the sensor configurations was investigated at Re = 100 for the computational fluid dynamic data, and for a Reynolds number range of 82-99 for the water tunnel PIV data. Results show that a five-sensor configuration can keep the root mean square estimation error, for the amplitudes of the first two modes to within 4% for simulation data and within 10% for the PIV data. This level of error is acceptable for a moderately robust controller. The POD-based design was found to be simpler, more effective, and robust compared to the ad hoc methods examined. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Vibration & Control is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FEEDBACK control systems KW - AUTOMATIC control KW - ORTHOGONAL decompositions KW - REYNOLDS number KW - DECOMPOSITION (Mathematics) KW - Flow control KW - linear stochastic estimation KW - proper orthogonal decomposition KW - sensor placement and number N1 - Accession Number: 15690441; Cohen, Kelly 1; Email Address: YonaKelly1@aol.com Siegel, Stefan 1 Wetlesen, Dave 1 Cameron, Jeff 1 Sick, Aaron 1; Affiliation: 1: HQ United States Air Force (USAF) Academy/DFAN, 2354 Fairchild Dr, Suite 6H27, USAF Academy, Colorado 80840, USA; Source Info: Dec2004, Vol. 10 Issue 12, p1857; Subject Term: FEEDBACK control systems; Subject Term: AUTOMATIC control; Subject Term: ORTHOGONAL decompositions; Subject Term: REYNOLDS number; Subject Term: DECOMPOSITION (Mathematics); Author-Supplied Keyword: Flow control; Author-Supplied Keyword: linear stochastic estimation; Author-Supplied Keyword: proper orthogonal decomposition; Author-Supplied Keyword: sensor placement and number; Number of Pages: 24p; Illustrations: 1 Black and White Photograph, 5 Diagrams, 4 Charts, 8 Graphs; Document Type: Article L3 - 10.1177/1077546304046035 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15690441&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shiffler, D. AU - Heggemeier, J. AU - LaCour, M. AU - Golby, K. AU - Ruebush, M. T1 - Response to “Comment on ‘Low level plasma formation in a carbon velvet cesium iodide coated cathode’ ” [Phys. Plasmas 11, 5730 (2004)]. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2004/12// VL - 11 IS - 12 M3 - Article SP - 5732 EP - 5733 PB - American Institute of Physics SN - 1070664X AB - The article presents the author's response on his paper "Low level plasma formation in a carbon velvet cesium iodide coated cathode." It responds to three basic issues-plasma at the cathode, bipolar flow in the diode and cesium iodide deposited on the anode. A cathode does indeed eject a plasma jet with a velocity of about 13106 cm/s. Further, these plasmas have temperatures in the range of 0.82 eV. The article fully address the issue of bipolar flow for experiments. Surface phenomena play a key role in the initiation of anode plasmas and bipolar flow. KW - BIPOLAR outflows (Astrophysics) KW - ELECTRODES KW - CESIUM iodide KW - ASTROPHYSICS KW - IODIDES KW - ANODES KW - CATHODES N1 - Accession Number: 15226090; Shiffler, D. 1 Heggemeier, J. 1 LaCour, M. 1 Golby, K. 1 Ruebush, M. 1; Affiliation: 1: US Air Force Research Laboratory, AFRL/DEHP, 3550 Aberdeen Avenue, SE Kirtland AFB, New Mexico 87107.; Source Info: Dec2004, Vol. 11 Issue 12, p5732; Subject Term: BIPOLAR outflows (Astrophysics); Subject Term: ELECTRODES; Subject Term: CESIUM iodide; Subject Term: ASTROPHYSICS; Subject Term: IODIDES; Subject Term: ANODES; Subject Term: CATHODES; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 2p; Document Type: Article L3 - 10.1063/1.1811618 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15226090&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carr, Paul H. T1 - DOES GOD PLAY DICE? INSIGHTS FROM THE FRACTAL GEOMETRY OF NATURE. JO - Zygon: Journal of Religion & Science JF - Zygon: Journal of Religion & Science Y1 - 2004/12// VL - 39 IS - 4 M3 - Article SP - 933 EP - 940 PB - Wiley-Blackwell SN - 05912385 AB - .Albert Einstein and Huston Smith reflect the old metaphor that chaos and randomness are bad. Scientists recently have discovered that many phenomena, from the fluctuations of the stock market to variations in our weather, have the same underlying order. Natural beauty from plants to snowflakes is described by fractal geometry; tree branching from trunks to twigs has the same fractal scaling as our lungs, from trachea to bronchi. Algorithms for drawing fractals have both randomness and global determinism. Fractal statistics is like picking a card from a stacked deck rather than from one that is shuffled to be truly random. The polarity of randomness (or freedom) and law characterizes the self-creating natural world. Polarity is in consonance with Taoism and contemporary theologians such as Paul Tillich, Alfred North Whitehead, Gordon Kaufman, Philip Hefner, and Pierre Teilhard de Chardin. Joseph Ford's new metaphor is replacing the old:“God plays dice with the universe, but they're loaded dice.” [ABSTRACT FROM AUTHOR] AB - Copyright of Zygon: Journal of Religion & Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RELIGION & science KW - GEOMETRY KW - FRACTALS KW - POLARITY -- Religious aspects KW - THEOLOGY KW - chaos and complexity KW - contemporary theologians evolution KW - fractal geometry KW - fractals KW - genetic algorithms KW - loaded dice KW - polarity KW - randomness and law KW - science and religion N1 - Accession Number: 15241972; Carr, Paul H. 1; Email Address: paul.carr2@comcast.net; Affiliation: 1: Emeritus, led the Component Technology Branch of the Air Force Research Laboratory, Hanscom AFB, MA 01731; Source Info: Dec2004, Vol. 39 Issue 4, p933; Subject Term: RELIGION & science; Subject Term: GEOMETRY; Subject Term: FRACTALS; Subject Term: POLARITY -- Religious aspects; Subject Term: THEOLOGY; Author-Supplied Keyword: chaos and complexity; Author-Supplied Keyword: contemporary theologians evolution; Author-Supplied Keyword: fractal geometry; Author-Supplied Keyword: fractals; Author-Supplied Keyword: genetic algorithms; Author-Supplied Keyword: loaded dice; Author-Supplied Keyword: polarity; Author-Supplied Keyword: randomness and law; Author-Supplied Keyword: science and religion; Number of Pages: 8p; Document Type: Article L3 - 10.1111/j.1467-9744.2004.00629.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15241972&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Macula, Anthony J. AU - Popyack, Leonard J. T1 - A group testing method for finding patterns in data JO - Discrete Applied Mathematics JF - Discrete Applied Mathematics Y1 - 2004/11/30/ VL - 144 IS - 1/2 M3 - Article SP - 149 EP - 157 SN - 0166218X AB - Abstract: The screening of data sets is essential to modern technology. The use of classical group testing to isolate objects that are individually positive has become the standard experimental procedure in many applied settings. Work is just beginning in applying group testing techniques to the identification of subsets of objects that are collectively positive. This paper addresses the development of probabilistic group testing methods that lead to the identification of positive combinations of objects with specific applications to data mining. [Copyright &y& Elsevier] AB - Copyright of Discrete Applied Mathematics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONIC information resource searching KW - BEGINNING KW - PERMUTATIONS KW - SEARCH engines KW - Complexes KW - Data mining KW - Group testing KW - Maximal frequent sets KW - Monotone properties N1 - Accession Number: 18779746; Macula, Anthony J. 1; Email Address: macula@geneseo.edu Popyack, Leonard J. 2; Email Address: leonard.popyack@rl.af.mil; Affiliation: 1: Department of Mathematics State University of New York, College at Geneseo, Geneseo, NY 14454, USA 2: Air Force Research Laboratory, Rome Research Site, Rome, NY 13441, USA; Source Info: Nov2004, Vol. 144 Issue 1/2, p149; Subject Term: ELECTRONIC information resource searching; Subject Term: BEGINNING; Subject Term: PERMUTATIONS; Subject Term: SEARCH engines; Author-Supplied Keyword: Complexes; Author-Supplied Keyword: Data mining; Author-Supplied Keyword: Group testing; Author-Supplied Keyword: Maximal frequent sets; Author-Supplied Keyword: Monotone properties; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.dam.2003.07.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18779746&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Look, D. C. AU - Renlund, G. M. AU - Burgener, R. H. AU - Sizelove, J. R. T1 - As-doped p-type ZnO produced by an evaporation/sputtering process. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/11/29/ VL - 85 IS - 22 M3 - Article SP - 5269 EP - 5271 PB - American Institute of Physics SN - 00036951 AB - Strongly p-type ZnO is produced by the following sequence of steps: (1) evaporation of Zn3As2 on a fused-quartz substrate at 350 °C; and (2) sputtering of ZnO with substrate held at 450 °C. The electrical characteristics include: resistivity of 0.4 Ω cm, a mobility of 4 cm2/V s, and a hole concentration of about 4×1018 cm-3. This resistivity is among the best (lowest) ever reported for p-type ZnO. Secondary-ion mass spectroscopic analysis gives an average As concentration about 5×1019 cm-3, and a simple one-band fit of the temperature-dependent mobility curve yields an acceptor concentration of about 9×1019 cm-3. This is strong evidence that the p-type dopant involves As, although it is not clear whether the acceptor is simply AsO or the recently suggested AsZn-2VZn. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide KW - SEMICONDUCTOR doping KW - EVAPORATION (Chemistry) KW - SPUTTERING (Physics) KW - SURFACES (Technology) KW - COLLISIONS (Nuclear physics) N1 - Accession Number: 15244149; Look, D. C. 1; Email Address: david.look@wpafb.af.mil Renlund, G. M. 2 Burgener, R. H. 2 Sizelove, J. R. 3; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 and Semiconductor Research Center, Wright State University, Dayton, Ohio 45435 2: ON International, Inc., 418 West Winchester Street, Salt Lake City, Utah 84107 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: 11/29/2004, Vol. 85 Issue 22, p5269; Subject Term: ZINC oxide; Subject Term: SEMICONDUCTOR doping; Subject Term: EVAPORATION (Chemistry); Subject Term: SPUTTERING (Physics); Subject Term: SURFACES (Technology); Subject Term: COLLISIONS (Nuclear physics); NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.1825615 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15244149&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucht, Robert P. AU - Roy, Sukesh AU - Gord, James R. T1 - Nonperturbative modeling of two-photon absorption in a three-state system. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2004/11/22/ VL - 121 IS - 20 M3 - Article SP - 9820 EP - 9829 PB - American Institute of Physics SN - 00219606 AB - The physics of the two-photon absorption process is investigated for a three-state system. The density-matrix equations for the two-photon interaction are solved in the steady-state limit assuming that the pump laser radiation is monochromatic. Collisional broadening, saturation, and Stark shifting of the two-photon resonance are investigated in detail by numerical solution of the steady-state density-matrix equations. Analytical expressions for the saturation intensity and the Stark shift are derived for the case where the single-photon transitions between the intermediate state and the initial and final states are far from resonance with the pump laser. For this case, it is found that the direction of the Stark shift is dependent on the relative magnitudes of the dipole-moment matrix elements for the single-photon transitions that couple the intermediate state with the initial and final states. Saturation and Stark shifting are also investigated for the case where the single-photon transitions between the intermediate state and the initial and final states are close to resonance with the pump laser. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSORPTION KW - PHOTONS KW - RESONANCE KW - LASERS KW - PHYSICAL sciences KW - EQUATIONS N1 - Accession Number: 15026688; Lucht, Robert P. 1; Email Address: Lucht@purdue.edu Roy, Sukesh 2 Gord, James R. 3; Affiliation: 1: School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907-2088 2: Innovative Scientific Solutions, Inc., Dayton, Ohio 45440 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, Ohio 45433-7251; Source Info: 11/22/2004, Vol. 121 Issue 20, p9820; Subject Term: ABSORPTION; Subject Term: PHOTONS; Subject Term: RESONANCE; Subject Term: LASERS; Subject Term: PHYSICAL sciences; Subject Term: EQUATIONS; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 10p; Illustrations: 4 Diagrams, 5 Graphs; Document Type: Article L3 - 10.1063/1.1809572 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15026688&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Thomas M. AU - Viggiano, A. A. AU - Friedman, Jeffrey F. AU - Van Doren, Jane M. T1 - Electron attachment and detachment: Electron affinities of isomers of trifluoromethylbenzonitrile. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2004/11/22/ VL - 121 IS - 20 M3 - Article SP - 9993 EP - 9998 PB - American Institute of Physics SN - 00219606 AB - Rate constants for electron attachment to the three isomers of trifluoromethylbenzonitrile [(CF3)(CN)C6H4, or TFMBN] were measured over the temperature range of 303–463 K in a 133-Pa He buffer gas, using a flowing-afterglow Langmuir-probe apparatus. At 303 K, the measured attachment rate constants are 9.0×10-8 (o-TFMBN), 5.5×10-8 (m-TFMBN), and 8.9×10-8 cm3 s-1 (p-TFMBN), estimated accurate to ±25%. The attachment process formed only the parent anion in all three cases. Thermal electron detachment was observed for all three anion isomers, and rate constants for this reverse process were also measured. From the attachment and detachment results, the electron affinities of the three isomers of TFMBN were determined to be 0.70(o-TFMBN), 0.67(m-TFMBN), and 0.83 eV (p-TFMBN), all ±0.05 eV. G3(MP2) [Gaussian-3 calculations with reduced Møller–Plesset orders (MP2)] calculations were carried out for the neutrals and anions. Electron affinities derived from these calculations are in good agreement with the experimental values. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLES (Nuclear physics) KW - ELECTRONS KW - NUCLEAR isomers KW - AFTERGLOW (Physics) KW - PHYSICS KW - ANIONS N1 - Accession Number: 15026669; Miller, Thomas M. 1; Email Address: thomas.miller@hanscom.af.mil Viggiano, A. A. 1 Friedman, Jeffrey F. 2,3 Van Doren, Jane M. 4; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Bedford, Massachusetts 01731-3010 2: Department of Physics, University of Puerto Rico, Mayaguez, Puerto Rico 00681-9016 3: Air Force Research Laboratory, Directed Energy Directorate, Kirtland Air Force Base, Albuquerque, New Mexico 87117-5776 4: Department of Chemistry, College of the Holy Cross, Worcester, Massachusetts 01610-2395; Source Info: 11/22/2004, Vol. 121 Issue 20, p9993; Subject Term: PARTICLES (Nuclear physics); Subject Term: ELECTRONS; Subject Term: NUCLEAR isomers; Subject Term: AFTERGLOW (Physics); Subject Term: PHYSICS; Subject Term: ANIONS; Number of Pages: 6p; Illustrations: 3 Diagrams, 5 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.1806418 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15026669&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bower, Kristen E. AU - Fritz, Jamie M. AU - McGuire, Kathleen L T1 - Transcriptional repression of MMP-1 by p21SNFT and reduced in vitro invasiveness of hepatocarcinoma cells. JO - Oncogene JF - Oncogene Y1 - 2004/11/18/ VL - 23 IS - 54 M3 - Article SP - 8805 EP - 8814 PB - Nature Publishing Group SN - 09509232 AB - p21SNFT (21?kDa small nuclear factor isolated from T cells) is a human basic leucine zipper transcription factor that can repress AP-1-mediated transcription. We show here that overexpression of p21SNFT in HepG2 cells leads to repression of matrix metalloproteinase-1 by 70-80%. p21SNFT interacted with Jun at the matrix metalloproteinase-1 promoter-88 Ets/AP-1 enhancer element, where Jun is known to activate transcription via interaction with Fos and Ets proteins. When p21SNFT/Jun dimers bound the element in the presence of Ets, DNA was protected differently than when Fos was paired with Jun. The data suggest a difference in overall conformation between p21SNFT-containing and Fos-containing complexes that may be involved in the repression of matrix metalloproteinase-1 by p21SNFT. Overexpression of p21SNFT led to a reduction in invasiveness of HepG2 cells through type I collagen and reconstituted basement membrane, an effect similar to that obtained via direct immunodepletion of matrix metalloproteinase-1. The results indicate that the mechanism of repression of matrix metalloproteinase-1 by p21SNFT may be exploited in inhibiting pathological matrix remodeling during cancer progression in vivo.Oncogene (2004) 23, 8805-8814. doi:10.1038/sj.onc.1208109 Published online 27 September 2004 [ABSTRACT FROM AUTHOR] AB - Copyright of Oncogene is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CANCER KW - T cells KW - LEUCINE zippers KW - TRANSCRIPTION factors KW - METALLOPROTEINASES KW - DNA KW - AP-1 KW - bZIP KW - collagen KW - Ets KW - Jun KW - matrix metalloproteinase N1 - Accession Number: 15090728; Bower, Kristen E. 1,2; Email Address: kbower@scripps.edu Fritz, Jamie M. 1,2,3 McGuire, Kathleen L 1; Affiliation: 1: Department of Biology, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182-4614, USA 2: Molecular Biology Institute, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182-4614, USA 3: Air Force Research Laboratory/HEPC, Brooks AFB, TX 78235-5323, USA; Source Info: 11/18/2004, Vol. 23 Issue 54, p8805; Subject Term: CANCER; Subject Term: T cells; Subject Term: LEUCINE zippers; Subject Term: TRANSCRIPTION factors; Subject Term: METALLOPROTEINASES; Subject Term: DNA; Author-Supplied Keyword: AP-1; Author-Supplied Keyword: bZIP; Author-Supplied Keyword: collagen; Author-Supplied Keyword: Ets; Author-Supplied Keyword: Jun; Author-Supplied Keyword: matrix metalloproteinase; Number of Pages: 10p; Document Type: Article L3 - 10.1038/sj.onc.1208109 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15090728&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Erdmann, Reinhard AU - U'Ren, Alfred AU - de la Cruz-Gutierrez, Manuel AU - Walmsley, Ian T1 - Multi Crystal Sources for Applications of Quantum Interference. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/11/15/ VL - 734 IS - 1 M3 - Article SP - 346 EP - 349 PB - American Institute of Physics SN - 0094243X AB - Entangled photon pairs from Spontaneous Parametric Downconversion have provided many tests and applications of quantum interference. It is shown that control over the process efficiency, as well as the photon pair properties, is obtained by replacing the usual nonlinear crystal source with an assembly of crystals separated by appropriate linear spacer media. Elimination of distinguishing timing information permits unique and useful features to be realized. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALLOGRAPHY KW - PHYSICAL sciences KW - PHOTONS KW - NUCLEAR counters KW - ELIMINATION reactions KW - CHEMICAL reactions N1 - Accession Number: 15090916; Erdmann, Reinhard 1 U'Ren, Alfred 2 de la Cruz-Gutierrez, Manuel 3 Walmsley, Ian 3; Affiliation: 1: Air Force Research Laboratory, 25 Electronics Pkwy, Rome, NY, 13441 2: Optics Dept. CICESE, Baja California, 22860 Mexico 3: Clarendon Laboratory, Oxford University, Oxford OX13PU, UK; Source Info: 2004, Vol. 734 Issue 1, p346; Subject Term: CRYSTALLOGRAPHY; Subject Term: PHYSICAL sciences; Subject Term: PHOTONS; Subject Term: NUCLEAR counters; Subject Term: ELIMINATION reactions; Subject Term: CHEMICAL reactions; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.1834450 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15090916&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zvanut, M.E. AU - Konovalov, V.V. AU - Haiyan Wang AU - Mitchel, W.C. AU - Mitchell, W.D. AU - Landis, G. T1 - Defect levels and types of point defects in high-purity and vanadium-doped semi-insulating 4H–SiC. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/11/15/ VL - 96 IS - 10 M3 - Article SP - 5484 EP - 5489 PB - American Institute of Physics SN - 00218979 AB - Electron paramagnetic resonance (EPR) spectroscopy and photo-induced EPR are used to examine the point defects in vanadium-doped 4H–SiC and high-purity semi-insulating (HPSI) 4H–SiC grown by physical vapor transport. Both types of samples often exhibit a 1.1-eV activation energy, Ea, as extracted from the temperature-dependent Hall/resistivity measurements; however, different defects are related to the same Ea in each case. In the vanadium-doped wafers, the EPR data reveal both V4+ and V3+ in the same sample; thus, the 1.1-eV Hall activation energy is tentatively interpreted as the V3+/4+ acceptor level. However, this conclusion cannot be confirmed because additional defects complicate the photoresponse of vanadium. The carbon vacancy, which is detected in all the HPSI wafers, exhibits a range of photothresholds similar to the various values measured for Ea. The photo-EPR and temperature-dependent Hall/resistivity measurements made before and after a 1600 °C anneal suggest that several different types of nonuniformly distributed defects participate in compensation of the HPSI material and that annealing selectively removes those with different defect levels. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VANADIUM KW - ELECTRON paramagnetic resonance KW - DISLOCATIONS in crystals KW - SEMICONDUCTORS KW - PARTICLES (Nuclear physics) KW - MAGNETIC resonance N1 - Accession Number: 14965061; Zvanut, M.E. 1; Email Address: mezvanut@uab.edu Konovalov, V.V. 1 Haiyan Wang 1 Mitchel, W.C. 2 Mitchell, W.D. 2 Landis, G. 2; Affiliation: 1: Department of Physics, University of Alabama at Birmingham, Birmingham, Alabama 35294 2: Air Force Research Laboratory/Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433; Source Info: 11/15/2004, Vol. 96 Issue 10, p5484; Subject Term: VANADIUM; Subject Term: ELECTRON paramagnetic resonance; Subject Term: DISLOCATIONS in crystals; Subject Term: SEMICONDUCTORS; Subject Term: PARTICLES (Nuclear physics); Subject Term: MAGNETIC resonance; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 6p; Illustrations: 6 Graphs; Document Type: Article L3 - 10.1063/1.1797547 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14965061&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Langhoff, P. W. AU - Boatz, J. A. AU - Hinde, R. J. AU - Sheehy, J. A. T1 - Atomic spectral methods for molecular electronic structure calculations. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2004/11/15/ VL - 121 IS - 19 M3 - Article SP - 9323 EP - 9342 PB - American Institute of Physics SN - 00219606 AB - Theoretical methods are reported for ab initio calculations of the adiabatic (Born–Oppenheimer) electronic wave functions and potential energy surfaces of molecules and other atomic aggregates. An outer product of complete sets of atomic eigenstates familiar from perturbation-theoretical treatments of long-range interactions is employed as a representational basis without prior enforcement of aggregate wave function antisymmetry. The nature and attributes of this atomic spectral-product basis are indicated, completeness proofs for representation of antisymmetric states provided, convergence of Schrödinger eigenstates in the basis established, and strategies for computational implemention of the theory described. A diabaticlike Hamiltonian matrix representative is obtained, which is additive in atomic-energy and pairwise-atomic interaction-energy matrices, providing a basis for molecular calculations in terms of the (Coulombic) interactions of the atomic constituents. The spectral-product basis is shown to contain the totally antisymmetric irreducible representation of the symmetric group of aggregate electron coordinate permutations once and only once, but to also span other (non-Pauli) symmetric group representations known to contain unphysical discrete states and associated continua in which the physically significant Schrödinger eigenstates are generally embedded. These unphysical representations are avoided by isolating the physical block of the Hamiltonian matrix with a unitary transformation obtained from the metric matrix of the explicitly antisymmetrized spectral-product basis. A formal proof of convergence is given in the limit of spectral closure to wave functions and energy surfaces obtained employing conventional prior antisymmetrization, but determined without repeated calculations of Hamiltonian matrix elements as integrals over explicitly antisymmetric aggregate basis states. Computational implementations of the theory employ efficient recursive methods which avoid explicit construction the metric matrix and do not require storage of the full Hamiltonian matrix to isolate the antisymmetric subspace of the spectral-product representation. Calculations of the lowest-lying singlet and triplet electronic states of the covalent electron pair bond (H2) illustrate the various theorems devised and demonstrate the degree of convergence achieved to values obtained employing conventional prior antisymmetrization. Concluding remarks place the atomic spectral-product development in the context of currently employed approaches for ab initio construction of adiabatic electronic eigenfunctions and potential energy surfaces, provide comparisons with earlier related approaches, and indicate prospects for more general applications of the method. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATOMIC spectra KW - ELECTRONIC structure KW - WAVE functions KW - POTENTIAL energy surfaces KW - HAMILTONIAN systems KW - WAVE mechanics N1 - Accession Number: 14945586; Langhoff, P. W. 1; Email Address: langhoff@drifter.sdsc.edu Boatz, J. A. 2 Hinde, R. J. 3 Sheehy, J. A. 4; Affiliation: 1: San Diego Supercomputer Center, University of California, La Jolla, California 92093-0505. 2: Propulsion Sciences Division, Air Force Research Laboratory (AFRL/PRS), Edwards Air Force Base, California 93524-7680. 3: Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996-1600. 4: Propulsion Research Center (TD-40), NASA Marshall Space Flight Center, Huntsville, Alabama 35812-0001.; Source Info: 11/15/2004, Vol. 121 Issue 19, p9323; Subject Term: ATOMIC spectra; Subject Term: ELECTRONIC structure; Subject Term: WAVE functions; Subject Term: POTENTIAL energy surfaces; Subject Term: HAMILTONIAN systems; Subject Term: WAVE mechanics; Number of Pages: 20p; Illustrations: 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.1794634 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14945586&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Popovic, Svetozar AU - Midey, Anthony J. AU - Williams, Skip AU - Fernandez, Abel I. AU - Viggiano, A. A. AU - Peng Zhang AU - Morokuma, K. T1 - Ion-molecule rate constants and branching ratios for the reaction of N3++O2 from 120 to 1400 K. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2004/11/15/ VL - 121 IS - 19 M3 - Article SP - 9481 EP - 9488 PB - American Institute of Physics SN - 00219606 AB - The kinetics of the reaction of N3+ with O2 has been studied from 120 to 1400 K using both a selected ion flow tube and high-temperature flowing afterglow. The rate constant decreases from 120 K to ∼1200 K and then increases slightly up to the maximum temperature studied, 1400 K. The rate constant compares well to most of the previous measurements in the overlapping temperature range. Comparing the results to drift tube data shows that there is not a large difference between increasing the translational energy available for reaction and increasing the internal energy of the reactants over much of the range, i.e., all types of energies drive the reactivity equally. The reaction produces both NO+ and NO2+, the latter of which is shown to be the higher energy NOO+ linear isomer. The ratio of NOO+ to NO+ decreases from a value of over 2 at 120 K to less than 0.01 at 1400 K because of dissociation of NOO+ at the higher temperatures. This ratio decreases exponentially with increasing temperature. High-level theoretical calculations have also been performed to compliment the data. Calculations using multi-reference configuration interaction theory at the MRCISD(Q)/cc-pVTZ level of theory show that singlet NOO+ is linear and is 4.5 eV higher in energy than ONO+. A barrier of 0.9 eV prevents dissociation into NO+ and O(1D); however, a crossing to a triplet surface connects to NO+ and O(3P) products. A singlet and a triplet potential energy surface leading to products have been determined using coupled cluster theory at the CCSD(T)/aug-cc-pVQZ level on structures optimized at the Becke3-Lee, Yang, and Parr (B3LYP)/aug-cc-pVTZ level of theory. The experimental results and reaction mechanism are evaluated using these surfaces. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ION-molecule collisions KW - NITROGEN KW - OXYGEN KW - ION flow dynamics KW - HIGH temperatures KW - IONS N1 - Accession Number: 14945569; Popovic, Svetozar 1 Midey, Anthony J. 1 Williams, Skip 1 Fernandez, Abel I. 1 Viggiano, A. A. 1; Email Address: viggiano@hanscom.af.mil Peng Zhang 2 Morokuma, K. 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts 01731-3010. 2: Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322.; Source Info: 11/15/2004, Vol. 121 Issue 19, p9481; Subject Term: ION-molecule collisions; Subject Term: NITROGEN; Subject Term: OXYGEN; Subject Term: ION flow dynamics; Subject Term: HIGH temperatures; Subject Term: IONS; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 8p; Illustrations: 3 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.1807376 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14945569&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Putthanarat, S. AU - Eby, R.K. AU - Naik, Rajesh R. AU - Juhl, Shane B. AU - Walker, Mark A. AU - Peterman, Elaine AU - Ristich, Scott AU - Magoshi, Jun AU - Tanaka, Toshihisa AU - Stone, Morley O. AU - Farmer, B.L. AU - Brewer, Christopher AU - Ott, Donald T1 - Nonlinear optical transmission of silk/green fluorescent protein (GFP) films JO - Polymer JF - Polymer Y1 - 2004/11/15/ VL - 45 IS - 25 M3 - Article SP - 8451 EP - 8457 SN - 00323861 AB - Abstract: In this initial work, we demonstrate a technique for preparing thin (10–20μm) films of silk doped with green fluorescent protein (GFP) by casting/annealing at 20°C and describe the resulting film characteristics. Notably, the GFP molecules maintain their nonlinear optical properties as evidenced by two-photon fluorescence microscopy and two-photon absorption measurements using near-infrared femtosecond pulses. The fractional transmission of focused near-infrared pulses of 775nm wavelength, 140fs pulsewidth was observed to decrease as the incident pulse energy is increased and/or the incident spot size is decreased, indicating that nonlinear absorption is taking place. Visible damage from the pulses is observed in a ∼10μm film at the highest peak incident fluences, which were in the range of 0.1–0.2J/cm2. Variations in thickness, morphology and GFP concentration of the films make precise specification of the two-photon absorption coefficient difficult. Since these films have potential applications in photonics, we suggest techniques for improving these properties in future generations of films. The suggestions present opportunities for future work. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL transfer function KW - THIN films KW - GREEN fluorescent protein KW - FLUORESCENCE microscopy KW - PHOTONICS KW - GFP KW - Nonlinear transmission KW - Silk films N1 - Accession Number: 15807644; Putthanarat, S. 1 Eby, R.K. 1; Email Address: reby@uakron.edu Naik, Rajesh R. 2 Juhl, Shane B. 2 Walker, Mark A. 3 Peterman, Elaine 2 Ristich, Scott 4 Magoshi, Jun 5 Tanaka, Toshihisa 6 Stone, Morley O. 2 Farmer, B.L. 2 Brewer, Christopher 2 Ott, Donald 7; Affiliation: 1: Department & Institute of Polymer Science, The University of Akron, 170 University Avenue, Akron, OH 44325-3909, USA 2: Air Force Research Laboratory, Material & Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA 3: Anteon Corporation, 5100 Springfield Pike, Dayton, OH 45431, USA 4: AT&T Government Solutions, 2940 Presidential Drive, Fairborn, OH 45324, USA 5: National Institute of Agrobiological Science, Tsukuba, 305-8602, Japan 6: Polymer Chemistry Lab, RIKEN, Saitama, 351-0198, Japan 7: Department of Biology, University of Akron, Akron, OH 44325-3908, USA; Source Info: Nov2004, Vol. 45 Issue 25, p8451; Subject Term: OPTICAL transfer function; Subject Term: THIN films; Subject Term: GREEN fluorescent protein; Subject Term: FLUORESCENCE microscopy; Subject Term: PHOTONICS; Author-Supplied Keyword: GFP; Author-Supplied Keyword: Nonlinear transmission; Author-Supplied Keyword: Silk films; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.polymer.2004.10.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15807644&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiang, H. AU - Grant, J.T. AU - Tullis, S. AU - Eyink, K. AU - Fleitz, P. AU - Bunning, T.J. T1 - The growth and chemical structure of thin photonic films formed from plasma copolymerization: I. Effect of monomer feed ratio JO - Polymer JF - Polymer Y1 - 2004/11/15/ VL - 45 IS - 25 M3 - Article SP - 8475 EP - 8483 SN - 00323861 AB - Abstract: Fabrication methodologies of thin, optical quality polymer films are important given the current interest in photonics. Plasma enhanced chemical vapor deposition (PECVD) has been previously investigated as a useful technique to polymerize various organic precursors. In the work presented here, we have studied the simultaneous plasma copolymerization of two monomers, benzene and octafluorocyclobutane (OFCB), and explored the structure of the final films using FTIR and XPS in order to tailor the resulting optical properties. There is a complex relationship between the film structures and the input parameters including monomer feed ratio and feed location. In plasma copolymerization, the gas phase initiation of the monomers is strongly dependent upon the bond dissociation energy of their structural moieties. The change of the monomer feed ratio leads to different trends with respect to various CFn(n=1–3) structural units, resulting in differences in the final film structure. Defluorination of the copolymer films was significantly enhanced by the addition of a small amount of benzene. The main fluorine-containing structural unit was the CF moiety for the copolymerized film, which is different from both homopolymerized OFCB and conventional PTFE polymers where the main fluorine-containing structural unit is CF2. Retention of conjugation and aromaticity in the resultant films was also observed. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - POLYMERS KW - PHOTONICS KW - ORGANIC compounds KW - COPOLYMERS KW - MONOMERS KW - FTIR KW - Plasma copolymerization KW - XPS N1 - Accession Number: 15807647; Jiang, H. 1 Grant, J.T. 2 Tullis, S. 1 Eyink, K. 1 Fleitz, P. 1 Bunning, T.J. 1; Email Address: timothy.bunning@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, 3005 Hobson Way, Wright-Patterson AFB, OH 45433-7707, USA 2: Research Institute, University of Dayton, Dayton, OH 45469-0168, USA; Source Info: Nov2004, Vol. 45 Issue 25, p8475; Subject Term: THIN films; Subject Term: POLYMERS; Subject Term: PHOTONICS; Subject Term: ORGANIC compounds; Subject Term: COPOLYMERS; Subject Term: MONOMERS; Author-Supplied Keyword: FTIR; Author-Supplied Keyword: Plasma copolymerization; Author-Supplied Keyword: XPS; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.polymer.2004.09.071 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15807647&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sinha, Amanda E. AU - Hope, Janiece L. AU - Prazen, Bryan J. AU - Fraga, Carlos G. AU - Nilsson, Erik J. AU - Synovec, Robert E. T1 - Multivariate selectivity as a metric for evaluating comprehensive two-dimensional gas chromatography–time-of-flight mass spectrometry subjected to chemometric peak deconvolution JO - Journal of Chromatography A JF - Journal of Chromatography A Y1 - 2004/11/12/ VL - 1056 IS - 1/2 M3 - Article SP - 145 EP - 154 SN - 00219673 AB - Two-dimensional gas chromatography (GC × GC) coupled to time-of-flight mass spectrometry (TOFMS) [GC × GC–TOFMS)] is a highly selective technique well suited to analyzing complex mixtures. The data generated is information-rich, making it applicable to multivariate quantitative analysis and pattern recognition. One separation on a GC × GC–TOFMS provides retention times on two chromatographic columns and a complete mass spectrum for each component within the mixture. In this report, we demonstrate how GC × GC–TOFMS combined with trilinear chemometric techniques, specifically parallel factor analysis (PARAFAC) initiated by trilinear decomposition (TLD), results in a powerful analytical methodology for multivariate deconvolution. Using PARAFAC, partially resolved components in complex mixtures can be deconvoluted and identified without requiring a standard data set, signal shape assumptions or any fully selective mass signals. A set of four isomers (iso-butyl, sec-butyl, tert-butyl, and n-butyl benzenes) is used to investigate the practical limitations of PARAFAC for the deconvolution of isomers at varying degrees of chromatographic resolution and mass spectral selectivity. In this report, multivariate selectivity was tested as a metric for evaluating GC × GC–TOFMS data that is subjected to PARAFAC peak deconvolution. It was found that deconvolution results were best with multivariate selectivities over 0.18. Furthermore, the application of GC × GC–TOFMS followed by TLD/PARAFAC is demonstrated for a plant metabolite sample. A region of GC × GC–TOFMS data from a complex natural sample of a derivatized metabolic plant extract from Huilmo (Sisyrinchium striatum) was analyzed using TLD/PARAFAC, demonstrating the utility of this analytical technique on a natural sample containing overlapped analytes without selective ions or peak shape assumptions. [Copyright &y& Elsevier] AB - Copyright of Journal of Chromatography A is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS chromatography KW - MULTIVARIATE analysis KW - TIME-of-flight mass spectrometry KW - SPECTRUM analysis -- Deconvolution KW - Chemometrics KW - Deconvolution KW - Gas chromatography, comprehensive two-dimensional KW - Multivariate selectivity KW - Net analyte signal KW - Parallel factor analysis N1 - Accession Number: 14959211; Sinha, Amanda E. 1 Hope, Janiece L. 1 Prazen, Bryan J. 1 Fraga, Carlos G. 2 Nilsson, Erik J. 3 Synovec, Robert E.; Email Address: synovec@chem.washington.edu; Affiliation: 1: Department of Chemistry, Center for Process Analytical Chemistry, University of Washington, P.O. Box 351700, Seattle, WA 98195-1700, USA 2: Department of Chemistry, 2355 Fairchild Dr. Suite 2N225, United States Air Force Academy, Colorado Springs, CO 80840-6230, USA 3: Insilicos, 4509 Interlake Avenue North, #223, Seattle, WA 98103-6773, USA; Source Info: Nov2004, Vol. 1056 Issue 1/2, p145; Subject Term: GAS chromatography; Subject Term: MULTIVARIATE analysis; Subject Term: TIME-of-flight mass spectrometry; Subject Term: SPECTRUM analysis -- Deconvolution; Author-Supplied Keyword: Chemometrics; Author-Supplied Keyword: Deconvolution; Author-Supplied Keyword: Gas chromatography, comprehensive two-dimensional; Author-Supplied Keyword: Multivariate selectivity; Author-Supplied Keyword: Net analyte signal; Author-Supplied Keyword: Parallel factor analysis; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.chroma.2004.06.110 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14959211&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Uchic, Michael D. AU - Dimiduk, Dennis M. AU - Florando, Jeffrey N. AU - Nix, William D. T1 - Response. JO - Science JF - Science Y1 - 2004/11/12/ VL - 306 IS - 5699 M3 - Letter SP - 1134 EP - 1135 SN - 00368075 AB - Presents a letter to the editor, which explains how a surface film could contribute significantly to the strength under progressively rising stresses. KW - LETTERS to the editor KW - STRAINS & stresses (Mechanics) N1 - Accession Number: 15178579; Uchic, Michael D. 1 Dimiduk, Dennis M. 1 Florando, Jeffrey N. 2 Nix, William D. 3; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7817, USA. 2: Lawrence Livermore National Laboratory, Livermore, CA 94550, USA. 3: Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305-2205, USA.; Source Info: 11/12/2004, Vol. 306 Issue 5699, p1134; Subject Term: LETTERS to the editor; Subject Term: STRAINS & stresses (Mechanics); Number of Pages: 2p; Document Type: Letter; Full Text Word Count: 348 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15178579&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hughes, David H. T1 - Instantaneous frequency and its instantaneous deviation. JO - Journal of Modern Optics JF - Journal of Modern Optics Y1 - 2004/11/10/ VL - 51 IS - 16-18 M3 - Article SP - 2693 EP - 2701 SN - 09500340 AB - Using statistical language, the instantaneous frequency of a deterministic signal, such as an electromagnetic pulse collected at a point in space, is a location function and its deviation is a shape function. The former is better defined than the latter, which can be computed an infinity of different ways, some of which can exhibit pathologies. Some deviations can become pure imaginary in some regions of the time-frequency phase space. The instantaneous frequency of the analytic signal, too, suffers its own pathologies. It can go negative when two or more distinct signals are analysed as a single signal. This paper briefly discusses a limited treatment of the instantaneous frequency and its deviation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PREVENTIVE medicine KW - PATHOLOGY KW - RADIATION KW - FREQUENCY spectra KW - SPECTRUM analysis KW - MEDICAL sciences N1 - Accession Number: 15791826; Hughes, David H. 1; Email Address: hughesd@rl.af.mil; Affiliation: 1: Centre for Integrated Transmission and Exploitation, Air Force Research Laboratory, 525 Brooks Rd., Rome, NY 13441, USA.; Source Info: 11/10/2004, Vol. 51 Issue 16-18, p2693; Subject Term: PREVENTIVE medicine; Subject Term: PATHOLOGY; Subject Term: RADIATION; Subject Term: FREQUENCY spectra; Subject Term: SPECTRUM analysis; Subject Term: MEDICAL sciences; Number of Pages: 9p; Document Type: Article L3 - 10.1080/09500340412331285000 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15791826&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Phillips, David M. AU - Drummy, Lawrence F. AU - Conrady, Deborah G. AU - Fox, Douglas M. AU - Naik, Rajesh R. AU - Stone, Morley O. AU - Trulove, Paul C. AU - de Long, Hugh C. AU - Mantz, Robert A. T1 - Dissolution and Regeneration of Bombyx mori Silk Fibroin Using Ionic Liquids. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2004/11/10/ VL - 126 IS - 44 M3 - Article SP - 14350 EP - 14351 SN - 00027863 AB - This article presents a study on the dissolution and regeneration of Bombyx mori silk fibroin using ionic liquids. Ionic liquids have been used to successfully dissolve other biological macromolecules such as cellulose. Researchers found that the ionic liquid 1-butyl-3-methylimidazolium chloride (BMIM Cl) can be used to prepare solutions of up to 25% (wlw) cellulose. They also reported that cellulose was soluble in BMIM Br and BMIM SCN but with less than half the degree of solubility of BMIM Cl. The success of BMIM Cl has been attributed to the ability of the chloride anion to disrupt the hydrogen bonding present between the cellulose chains. KW - SILKWORMS KW - SILK KW - CELLULOSE KW - GLUCANS KW - CHLORIDES KW - HYDROGEN bonding KW - BIOMACROMOLECULES N1 - Accession Number: 15260833; Phillips, David M. 1 Drummy, Lawrence F. 1 Conrady, Deborah G. 1 Fox, Douglas M. 2 Naik, Rajesh R. 1 Stone, Morley O. 1 Trulove, Paul C. 2 de Long, Hugh C. 3 Mantz, Robert A. 1; Email Address: robert.mantz@wpafb.af.mil; Affiliation: 1: Materials & Manufacturing Directorate, Air Force Research Laboratory, 2941 Hobson Way, Wright-Patterson AFB, Ohio 45433. 2: Chemistry Department, U.S. Naval Academy, Annapolis, Maryland 21402. 3: Chemistry and Life Sciences Directorate, Air Force Office of Scientific Research, Arlington, Virginia 22203.; Source Info: 11/10/2004, Vol. 126 Issue 44, p14350; Subject Term: SILKWORMS; Subject Term: SILK; Subject Term: CELLULOSE; Subject Term: GLUCANS; Subject Term: CHLORIDES; Subject Term: HYDROGEN bonding; Subject Term: BIOMACROMOLECULES; NAICS/Industry Codes: 313210 Broadwoven Fabric Mills; NAICS/Industry Codes: 112999 All other miscellaneous animal production; NAICS/Industry Codes: 313110 Fiber, Yarn, and Thread Mills; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15260833&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Glavicic, M.G. AU - Kobryn, P.A. AU - Semiatin, S.L. T1 - Validation of an automated EBSD method to deduce the β-phase texture in Ti–6Al–4V with a colony-α microstructure JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2004/11/10/ VL - 385 IS - 1/2 M3 - Article SP - 372 EP - 376 SN - 09215093 AB - Abstract: An automated method to determine the texture of the β-phase in Ti–6Al–4V using measured α-phase electron-backscatter-diffraction data (EBSD) was validated by comparing the deduced texture with the texture measured directly using X-ray diffraction. The deduced α-phase-variant frequency distribution revealed that all variants were not equally probable. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARTICLES (Nuclear physics) KW - MICROMECHANICS KW - STEREOLOGY KW - OPTICAL diffraction KW - Burgers relation KW - Electron-backscatter-diffraction KW - Phase transformation KW - Texture KW - Titanium N1 - Accession Number: 19302775; Glavicic, M.G. 1 Kobryn, P.A. 2 Semiatin, S.L. 2; Affiliation: 1: UES Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMP, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Nov2004, Vol. 385 Issue 1/2, p372; Subject Term: PARTICLES (Nuclear physics); Subject Term: MICROMECHANICS; Subject Term: STEREOLOGY; Subject Term: OPTICAL diffraction; Author-Supplied Keyword: Burgers relation; Author-Supplied Keyword: Electron-backscatter-diffraction; Author-Supplied Keyword: Phase transformation; Author-Supplied Keyword: Texture; Author-Supplied Keyword: Titanium; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.msea.2004.07.036 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19302775&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fernandez AU - A. I. AU - Viggiano AU - A. A. AU - Miller AU - T. M. AU - Williams AU - S. AU - Dotan AU - I. AU - Seeley AU - J. V. AU - Troe AU - J. T1 - Collisional Stabilization and Thermal Dissociation of Highly Vibrationally Excited C9H12+ Ions from the Reaction O2+ + C9H12 → O2 + C9H12+ JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2004/11/08/ VL - 108 IS - 45 M3 - Article SP - 9652 EP - 9659 SN - 10895639 AB - Highly vibrationally excited n-propylbenzene cations, C9H12+*, were prepared by the charge transfer reaction O2+ + C9H12 → O2 + C9H12+* in a turbulent ion flow tube. The subsequent competition between fragmentation of C9H12+* into C7H7+ + C2H5 and stabilization in collisions with N2 was studied at temperatures in the range 423-603 K and at pressures between 15 and 200 Torr. Most of the C7H7+ is the aromatic benzylium isomer, while the fraction of the minor species, seven-membered-ring tropylium, increases with T, from 5 to 20%. Minor fragments are C6H6+, C7H8+, and C8H9+. Energy-transfer step sizes 〈ΔE〉 for collisional deactivation are obtained by combining the stabilization versus fragmentation ratios measured as a function of pressure in this study with fragmentation rates from the literature. The values are compared with related information for other excited molecular ions and are similar to those of their neutral analogues. At the highest temperatures, C9H12+ was also observed to pyrolyze after collisional stabilization. Employing unimolecular rate theory, the derived rate constants for thermal dissociation of C9H12+ are related to values derived from the specific rate constants k(E,J) for fragmentation. Good agreement is found between measured and predicted pyrolysis rate constants. This allows us to confirm the dissociation energy of C9H12+ into C7H7+ (benzylium) and C2H5 as 166.9 (±2.2) kJ mol-1 (at 0 K). [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXCITED state chemistry KW - DISSOCIATION (Chemistry) KW - SCISSION (Chemistry) KW - PHYSICAL & theoretical chemistry N1 - Accession Number: 16427032; Fernandez A. I. 1 Viggiano A. A. 1 Miller T. M. 1 Williams S. 1 Dotan I. 1 Seeley J. V. 1 Troe J. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom AFB, Massachusetts 01731-3010, NRC Research Associateship Program, Keck Center of the National Academies, 500 Fifth Street, NW, GR 322A, Washington, D.C. 20001, Department of Natural Sciences, The Open University of Israel, Ramat Aviv, Tel Aviv, Israel, Department of Chemistry, Oakland University, Rochester, Michigan 48309-4401, and Institute for Physical Chemistry, University of Goettingen, Tammannstrasse 6, D-37077 Goettingen, Germany; Source Info: Nov2004, Vol. 108 Issue 45, p9652; Subject Term: EXCITED state chemistry; Subject Term: DISSOCIATION (Chemistry); Subject Term: SCISSION (Chemistry); Subject Term: PHYSICAL & theoretical chemistry; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16427032&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Levandier AU - D. J. AU - Chiu AU - Y.-H. AU - Dressler AU - R. A. AU - Sun AU - L. AU - Schatz AU - G. C. T1 - Hyperthermal Reactions of O+(4S3/2) with CD4 and CH4: Theory and Experiment. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2004/11/08/ VL - 108 IS - 45 M3 - Article SP - 9794 EP - 9804 SN - 10895639 AB - Theoretical and experimental methods are applied to the study of the reaction dynamics in hyperthermal collisions of O+ (4S3/2) with methane. Measurements of the absolute reaction cross sections for the interaction of O+ with CD4 and CH4 were obtained at collision energies in the range from near-thermal to approximately 15 eV, using the guided-ion beam (GIB) technique. Product recoil velocity distributions, using the GIB time-of-flight (TOF) methods, were determined for several product ions at selected collision energies. The main reaction channel, charge transfer, proceeds via large impact parameter collisions. A number of minor channels, involving more intimate collisions, were also detected. Ab initio electronic structure calculations have been performed with different levels of theory and basis sets, including high-level coupled-cluster calculations to determine the energies of reaction intermediates and transition states for reaction. Several reaction paths on both quartet and doublet electronic states of (O·CH4)+ are found, and these provide a reasonable qualitative interpretation of the experiments. Although most of the products can be produced via spin-allowed pathways, the appearance of CH3+ at low energies suggests that intersystem crossing plays some role. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLISIONS (Nuclear physics) KW - COLLISIONS (Physics) KW - ION bombardment KW - ATOMIC orbitals N1 - Accession Number: 16427049; Levandier D. J. 1 Chiu Y.-H. 1 Dressler R. A. 1 Sun L. 1 Schatz G. C. 1; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731; Source Info: Nov2004, Vol. 108 Issue 45, p9794; Subject Term: COLLISIONS (Nuclear physics); Subject Term: COLLISIONS (Physics); Subject Term: ION bombardment; Subject Term: ATOMIC orbitals; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16427049&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stith, Sandra M. AU - Smith, Douglas B. AU - Penn, Carrie E. AU - Ward, David B. AU - Tritt, Dari T1 - Intimate partner physical abuse perpetration and victimization risk factors: A meta-analytic review JO - Aggression & Violent Behavior JF - Aggression & Violent Behavior Y1 - 2004/11// VL - 10 IS - 1 M3 - Article SP - 65 EP - 98 SN - 13591789 AB - Evidence from 85 studies was examined to identify risk factors most strongly related to intimate partner physical abuse perpetration and victimization. The studies produced 308 distinct effect sizes. These effect sizes were then used to calculate composite effect sizes for 16 perpetration and 9 victimization risk factors. Large effect sizes were found between perpetration of physical abuse and five risk factors (emotional abuse, forced sex, illicit drug use, attitudes condoning marital violence, and marital satisfaction). Moderate effect sizes were calculated between perpetration of physical abuse and six risk factors (traditional sex-role ideology, anger/hostility, history of partner abuse, alcohol use, depression, and career/life stress). A large effect size was calculated between physical violence victimization and the victim using violence toward her partner. Moderate effect sizes were calculated between female physical violence victimization and depression and fear of future abuse. [Copyright &y& Elsevier] AB - Copyright of Aggression & Violent Behavior is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DRUGS of abuse KW - GENDER role KW - PSYCHOLOGICAL abuse KW - META-analysis KW - Partner violence KW - Risk factors KW - Spouse abuse KW - Meta-analysis N1 - Accession Number: 14427561; Stith, Sandra M. 1; Email Address: sstith@vt.edu Smith, Douglas B. 1 Penn, Carrie E. 1 Ward, David B. 1 Tritt, Dari 2; Affiliation: 1: Human Development Department, Virginia Polytechnic Institute and State University, 7054 Haycock Road, Falls Church, VA 22043, USA 2: United States Air Force, Family Advocacy Program, Brooks AFB, USA; Source Info: Nov2004, Vol. 10 Issue 1, p65; Subject Term: DRUGS of abuse; Subject Term: GENDER role; Subject Term: PSYCHOLOGICAL abuse; Subject Term: META-analysis; Author-Supplied Keyword: Partner violence; Author-Supplied Keyword: Risk factors; Author-Supplied Keyword: Spouse abuse; Author-Supplied Keyword: Meta-analysis; Language of Keywords: English; Language of Keywords: Spanish; Number of Pages: 34p; Document Type: Article L3 - 10.1016/j.avb.2003.09.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14427561&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Szmulowicz, Frank T1 - Analytic, graphical, and geometric solutions for photonic band gaps. JO - American Journal of Physics JF - American Journal of Physics Y1 - 2004/11// VL - 72 IS - 11 M3 - Article SP - 1392 EP - 1396 SN - 00029505 AB - Photonic band gap (PBG) structures consisting of alternating layers of two dielectric materials exhibit PBGs—regions of the electromagnetic spectrum where light propagation is forbidden. The edges of these gaps are found from the Kronig-Penney relation. It is shown that the conditions for the band edges can be visualized using the sides and angles of a triangle. It also is shown that the wavelength at the band edges scales with the layer widths. Photon wavelengths at the band edges are found analytically as a function of PBG parameters for the technologically important cases of quarter-wave/half-wave and eighth-wave/half-wave PBG stacks; in a general case, a pedagogically transparent graphical solution is provided. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Physics is the property of American Association of Physics Teachers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTONICS KW - DIELECTRICS KW - ELECTROMAGNETISM KW - PHOTONS KW - OPTICS N1 - Accession Number: 14987761; Szmulowicz, Frank 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433-7707; Source Info: Nov2004, Vol. 72 Issue 11, p1392; Subject Term: PHOTONICS; Subject Term: DIELECTRICS; Subject Term: ELECTROMAGNETISM; Subject Term: PHOTONS; Subject Term: OPTICS; Number of Pages: 5p; Illustrations: 4 Diagrams, 3 Charts; Document Type: Article L3 - 10.1119/1.1783901 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14987761&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barnes, Paul N. AU - Haugan, Timothy J. AU - Varanasi, Chakrapani V. AU - Campbell, Timothy A. T1 - Flux pinning behavior of incomplete multilayered lattice structures in YBa2Cu3O7-d. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/11//11/1/2004 VL - 85 IS - 18 M3 - Article SP - 4088 EP - 4090 PB - American Institute of Physics SN - 00036951 AB - Magnetization results of YBa2Cu3O7-d films processed with interlayers of CeO2 inclusions are presented. Unexpected flux pinning results that are different from previous observations with nanoparticulate layered inclusions were observed. Flux pinning was found to be in some cases either slightly improved at either low fields <0.5 T or in other cases at high fields >8 T although degraded, sometimes severely, at interim magnetic fields. Most unexpectedly, the pinning performance of the various samples rapidly converges as the temperature is reduced from 77 to 65 K, causing all films to have similar Jc(H) behavior at 65 K even though dramatically different at 77 K. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISLOCATIONS in crystals KW - MAGNETIC fields KW - THIN films KW - NANOPARTICLES KW - PHYSICS N1 - Accession Number: 14945492; Barnes, Paul N. 1; Email Address: paul.barnes@wpafb.af.mil Haugan, Timothy J. 1 Varanasi, Chakrapani V. 1 Campbell, Timothy A. 1; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433; Source Info: 11/1/2004, Vol. 85 Issue 18, p4088; Subject Term: DISLOCATIONS in crystals; Subject Term: MAGNETIC fields; Subject Term: THIN films; Subject Term: NANOPARTICLES; Subject Term: PHYSICS; Number of Pages: 3p; Illustrations: 1 Diagram, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.1809274 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14945492&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parco, James AU - Rapoport, Amnon T1 - Enhancing Honesty in Bargaining Under Incomplete Information: An Experimental Study of the Bonus Procedure. JO - Group Decision & Negotiation JF - Group Decision & Negotiation Y1 - 2004/11// VL - 13 IS - 6 M3 - Article SP - 539 EP - 562 SN - 09262644 AB - The sealed-bidk-double auction mechanism for two-person bargaining under incomplete information can be extended by providing a bonus for both traders if, and only if, an agreement is reached. Brams and Kilgour (1996,Group Decision and Negotiation, 5, 239-262) proved that there is a unique level of bonus, namely, half the difference between the buyer’s bid and seller’s ask, that induces the traders to bargain truthfully. Stein and Parco (2001, unpublished manuscript) extend the theoretical work to the case of partial bonus levels that reduce, but do not completely eliminate, misrepresentation of the reservation values. In the present study, we experimentally investigate the effects of providing different bonus values on the misrepresentation of the bargainers’ reservation values. Our results show that implementation of a bonus has a significant impact on bargaining behavior but not nearly to the extent predicted by the equilibrium analysis. A reinforcement-based learning model originally proposed for the no bonus case accounts quite well for the results of all three experimental conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Group Decision & Negotiation is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEGOTIATION KW - VALUES (Ethics) KW - HONESTY KW - RELIABILITY (Personality trait) KW - INTEGRITY KW - TRUTHFULNESS & falsehood KW - bargaining KW - bonus procedure KW - experiment KW - k-double auction KW - sealed-bid KW - truthful revelation N1 - Accession Number: 16273017; Parco, James 1; Email Address: james.parco@usafa.af.mil Rapoport, Amnon 2; Email Address: amnon@u.arizona.edu; Affiliation: 1: United States Air Force Academy, Department of Management, Colorado Springs CO 80840, USA 2: University of Arizona, Dept. of Management and Policy, 405 McClelland Hall, Tucson, AZ 85721, USA; Hong Kong University of Science and Technology, Dept. of Economics, Kowloon, Hong Kong; Source Info: Nov2004, Vol. 13 Issue 6, p539; Subject Term: NEGOTIATION; Subject Term: VALUES (Ethics); Subject Term: HONESTY; Subject Term: RELIABILITY (Personality trait); Subject Term: INTEGRITY; Subject Term: TRUTHFULNESS & falsehood; Author-Supplied Keyword: bargaining; Author-Supplied Keyword: bonus procedure; Author-Supplied Keyword: experiment; Author-Supplied Keyword: k-double auction; Author-Supplied Keyword: sealed-bid; Author-Supplied Keyword: truthful revelation; Number of Pages: 24p; Document Type: Article L3 - 10.1007/s10726-005-3824-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16273017&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Seongman Jang AU - Choi, Wonsuk AU - Sarkar, Tapan K. AU - Salazar-Palma, Magdalena AU - Kim, Kyungjung AU - Baum, Carl E. T1 - Exploiting Early Time Response Using the Fractional Fourier Transform for Analyzing Transient Radar Returns. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2004/11// VL - 52 IS - 11 M3 - Article SP - 3109 EP - 3121 SN - 0018926X AB - This paper presents a new technique for estimating parameters of damped sinusoids and impulse-like responses utilizing both early and late time transient scattering responses. Transient scattering responses are composed of damped sinusoids at late times and impulse-like components at early times. Due to the Impulse-like components, it is difficult to extract meaningful damped sinusoids when analyzing the complete data set. In this paper, the entire time-domain response is used to extract the signal parameters of interest utilizing both the early and late times. The fractional Fourier transform (FrFT), especially the half Fourier transform (HFT), is used to analyze the data for parameter identification. Impulse or Gaussian-like pulses can be easily separated from the late time damped exponentials in the HFT domain, as they have similar functional representations. In addition, the damped exponentials have a turn on time which needs to be solved for. Results from two examples show that the new technique is applicable for signals that are composed of damped exponentials with a turn-on time and short pulse-like components. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR KW - FOURIER transforms KW - FOURIER analysis KW - SCATTERING (Physics) KW - DETECTORS KW - TIME-domain analysis KW - SYSTEM analysis KW - Early time response KW - entire functions KW - fractional Fourier transforms (FrFT) KW - poles KW - singularity expansion method (SEM). N1 - Accession Number: 15383165; Seongman Jang 1; Email Address: sejang@mailbox.syr.edu Choi, Wonsuk 1; Email Address: wchoi01@syr.edu Sarkar, Tapan K. 1; Email Address: tksarkar@syr.edu Salazar-Palma, Magdalena 2 Kim, Kyungjung 1; Email Address: kkim08@syr.edu Baum, Carl E. 3; Affiliation: 1: Department of Electrical Engineering and Computer Science, Syracuse University, Syracuse, NY 13244 USA. 2: Dipartimento SSR, ETSI Telecomunicacion, Universidad Politecnica de Madrid, 28040 Madrid, Spain. 3: Air Force Research Laboratory, Directed Energy Directorate, Kirtland Air Force Base, NM 87117 USA.; Source Info: Nov2004, Vol. 52 Issue 11, p3109; Subject Term: RADAR; Subject Term: FOURIER transforms; Subject Term: FOURIER analysis; Subject Term: SCATTERING (Physics); Subject Term: DETECTORS; Subject Term: TIME-domain analysis; Subject Term: SYSTEM analysis; Author-Supplied Keyword: Early time response; Author-Supplied Keyword: entire functions; Author-Supplied Keyword: fractional Fourier transforms (FrFT); Author-Supplied Keyword: poles; Author-Supplied Keyword: singularity expansion method (SEM).; Number of Pages: 13p; Document Type: Article L3 - 10.1109/TAP.2004.835165 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15383165&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Beran, P. S. AU - Khot, N. S. AU - Eastep, F. E. AU - Snyder, R. D. AU - Zweber, J. V. T1 - Numerical Analysis of Store-Induced Limit-Cycle Oscillation. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2004/11//Nov/Dec2004 VL - 41 IS - 6 M3 - Article SP - 1315 EP - 1326 SN - 00218669 AB - Store-induced limit-cycle oscillation of a rectangular wing with tip store in transonic flow is simulated using a variety of mathematical models for the flowfield: transonic small-disturbance theory (with and without inclusion of store aerodynamics) and transonic small-disturbance theory with interactive boundary layer (without inclusion of store aerodynamics). For the conditions investigated, assuming inviscid flow, limit-cycle oscillations are observed to occur as a result of a weakly subcritical Hopf bifurcation and are obtained at speeds lower than those predicted 1) nonlinearly for clean-wing flutter and 2) linearly for wing/store flutter. The ability of transonic small-disturbance theory to predict the occurrence and strength of this type of limit-cycle oscillation is compared for the different models. Differences in unmatched and matched aeroelastic analysis are described. Solutions computed for the clean rectangular wing are compared to those computed with the Euler equations for a case of static aeroelastic behavior and for a case of forced, rigid-wing oscillation at Mach 0.92. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIMIT cycles KW - OSCILLATIONS KW - AERODYNAMICS KW - MATHEMATICAL models KW - FLUID dynamics N1 - Accession Number: 15829541; Beran, P. S. 1,2; Email Address: philip.beran@wpafb.af.mil Khot, N. S. 1,3 Eastep, F. E. 4,5; Email Address: franklin.eastep@wpafb.af.mil Snyder, R. D. 6,7; Email Address: richard.snyder@wpafb.af.mil Zweber, J. V. 6,7; Email Address: jeffrey.zweber@wpafb.af.mil; Affiliation: 1: Principal Research Aerospace Engineer, AFRL/VASD, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Associate Fellow, AIAA 3: Associate Fellow AIAA 4: NRC Senior Research Associate, AFRL/VASD, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 5: Fellow AIAA 6: Aerospace Engineer, AFRL/VASD, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 7: Senior Member, AIAA; Source Info: Nov/Dec2004, Vol. 41 Issue 6, p1315; Subject Term: LIMIT cycles; Subject Term: OSCILLATIONS; Subject Term: AERODYNAMICS; Subject Term: MATHEMATICAL models; Subject Term: FLUID dynamics; Number of Pages: 12p; Illustrations: 2 Diagrams, 1 Chart, 12 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15829541&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pino, R. AU - Ko, Y. AU - Dutta, P. S. AU - Guha, Shekhar AU - Gonzalez, Leonel P. T1 - Burstein-Moss shift in impurity-compensated bulk Ga1-xInxSb substrates. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/11//11/1/2004 VL - 96 IS - 9 M3 - Article SP - 5349 EP - 5352 PB - American Institute of Physics SN - 00218979 AB - The optical and electrical properties of tellurium- (Te) compensated Ga1-xInxSb bulk crystals with alloy compositions ranging from x=0.37 to x=0.98 have been investigated. It has been observed that the Burstein-Moss shift plays an important role in the optical properties of Ga1-xInxSb crystals for the alloy compositions greater than x=0.5 and net donor concentrations in the 2.9×1017 to 2.6×1018 cm-3 range at 300 K. A good agreement has been obtained between the theory and experimental observations. Furthermore, electrical characterizations at 300 and 77 K show that Te compensates the native defects in Ga1-xInxSb, irrespective of the alloy composition. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TELLURIUM KW - SEMICONDUCTORS -- Impurity distribution KW - CRYSTALS KW - ELECTROMAGNETIC mass shift KW - ELECTROMAGNETIC fields KW - CONTAMINATION (Technology) N1 - Accession Number: 14909573; Pino, R. 1 Ko, Y. 1 Dutta, P. S. 1; Email Address: duttap@rpi.edu Guha, Shekhar 2 Gonzalez, Leonel P. 3; Affiliation: 1: Department of Electrical, Computer, and Systems Engineering, Center for Integrated Electronics, Rensselaer Polytechnic Institute, Troy, New York 12180 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Anteon Corporation, Dayton, Ohio 45433; Source Info: 11/1/2004, Vol. 96 Issue 9, p5349; Subject Term: TELLURIUM; Subject Term: SEMICONDUCTORS -- Impurity distribution; Subject Term: CRYSTALS; Subject Term: ELECTROMAGNETIC mass shift; Subject Term: ELECTROMAGNETIC fields; Subject Term: CONTAMINATION (Technology); Number of Pages: 4p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.1796538 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14909573&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McDaniel, G. Y. AU - Fenstermaker, S. T. AU - Lampert, W. V. AU - Holloway, P. H. T1 - Rhenium ohmic contacts on 6H-SiC. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/11//11/1/2004 VL - 96 IS - 9 M3 - Article SP - 5357 EP - 5364 PB - American Institute of Physics SN - 00218979 AB - Rhenium (Re) thin-film contacts (100-nm thick) were deposited on carbon-rich, nominally stoichiometric, and silicon-rich 6H–SiC surfaces, which were moderately doped with nitrogen (1.28×1018 cm-3). Morphology (Dektak), phase formation (x-ray diffraction), chemistry (Auger electron spectroscopy), and electrical properties (I–V) were characterized for the as-deposited and annealed (120 min, 1000 °C, vacuum <1×10-6 Torr) contacts. As-deposited films were nonohmic. Films grown on carbon-rich surfaces were nonspecular, granular, and often delaminated during characterization. At room temperature in air, the Re films on stoichiometric SiC remained optically specular reflecting for 3 h, but then became hazy from oxidation. The Re films on silicon-rich surfaces, stored in air at room temperature, resisted ex situ oxidation for approximately 24 h. The annealed samples remained specular without visible signs of oxidation. The annealing resulted in a reduction in surface roughness for all the films regardless of substrate chemistry. The phase separation between carbon and rhenium was observed based on the formation of interfacial Re clusters and a ∼10-nm graphite surface layer after annealing. Auger data showed that Si layers (5–10 nm) deposited to create Si-rich surfaces were partially consumed to form rhenium silicide during annealing, and the sharp Re/Si/SiC interface became more diffused with Re detected ∼50 nm deeper into the structure. The annealing of Re films on moderately doped (1.28×1018 cm-3) SiC resulted in ohmic contacts with an average specific contact resistance of 7.0×10-5 Ω cm2 for stoichiometric and 1.6×10-5 Ω cm2 for silicon-rich samples. The annealed contacts on carbon-rich surfaces remained rectifying. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - RHENIUM KW - OHMIC contacts KW - ELECTRIC contactors KW - SEMICONDUCTOR-metal boundaries KW - SURFACES (Technology) N1 - Accession Number: 14909568; McDaniel, G. Y. 1,2; Email Address: mcdaniel.gavin@ensco.com Fenstermaker, S. T. 2 Lampert, W. V. 2 Holloway, P. H. 1; Affiliation: 1: Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611-6400 2: Air Force Research Laboratory/Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Ohio 45433-7707; Source Info: 11/1/2004, Vol. 96 Issue 9, p5357; Subject Term: THIN films; Subject Term: RHENIUM; Subject Term: OHMIC contacts; Subject Term: ELECTRIC contactors; Subject Term: SEMICONDUCTOR-metal boundaries; Subject Term: SURFACES (Technology); Number of Pages: 8p; Illustrations: 3 Diagrams, 5 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.1797550 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14909568&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Szmulowicz, Frank T1 - Analytic, graphical, and geometric solutions for the band edges of one-dimensional photonic band gap materials. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/11//11/1/2004 VL - 96 IS - 9 M3 - Article SP - 5376 EP - 5378 PB - American Institute of Physics SN - 00218979 AB - The conditions for the band gap edges of one-dimensional photonic band gap (PBG) materials are presented in forms that lead to alternate analytic, graphical, and geometric solutions and interpretations. Heretofore unavailable analytical conditions for the band edges of quarter wave/half wave and eighth wave/half wave PBG structures are derived. The graphical solution has the form of an intersection of an invariant (material dependent) figure with a straight (structure dependent) line, a convenient separation not possible with the Kronig-Penney (KP) equation. The geometric solution is represented by the sides and angles of simple triangles. The present formalism should help in visualizing the PBG band gap formation beyond the view offered by the KP equation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENERGY-band theory of solids KW - PHOTONICS KW - INVARIANTS (Mathematics) KW - PHOTONS KW - OPTOELECTRONICS KW - PHYSICAL & theoretical chemistry N1 - Accession Number: 14909641; Szmulowicz, Frank 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433-7707; Source Info: 11/1/2004, Vol. 96 Issue 9, p5376; Subject Term: ENERGY-band theory of solids; Subject Term: PHOTONICS; Subject Term: INVARIANTS (Mathematics); Subject Term: PHOTONS; Subject Term: OPTOELECTRONICS; Subject Term: PHYSICAL & theoretical chemistry; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Charts, 1 Graph; Document Type: Article L3 - 10.1063/1.1803626 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14909641&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - de La Beaujardière, O. T1 - C/NOFS: a mission to forecast scintillations JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2004/11// VL - 66 IS - 17 M3 - Article SP - 1573 EP - 1591 SN - 13646826 AB - This article describes the science to be pursued during the Communication/Navigation Outage Forecasting System (C/NOFS) Mission of the Air Force Research Laboratory. The primary purpose of C/NOFS is to forecast the presence of ionospheric irregularities that adversely impact communication and navigation systems. A satellite, scheduled for launch in May 2005 into a low inclination , elliptical orbit, is the most significant component of the C/NOFS program. Complementary ground-based measurements are also critical to the success of the mission.C/NOFS science objectives may be organized into three categories: (1) to understand physical processes active in the background ionosphere and thermosphere in which plasma instabilities grow; (2) to identify mechanisms that trigger or quench the plasma irregularities responsible for signal degradation; and (3) to determine how the plasma irregularities affect the propagation of electro-magnetic waves.C/NOFS is the first satellite solely dedicated to forecasting ionospheric irregularities and radio wave scintillations. It will be equipped with sensors that measure the following parameters: ambient and fluctuating electron densities; ion and electron temperatures; AC and DC electric fields; magnetic fields; neutral winds; ionospheric scintillations; and electron content along the lines of sight between C/NOFS and the Global Positioning System (GPS). Thus, the sensor suite on C/NOFS is richer than on any previously flown equatorial satellite. A broad range of ground-based measurements will complement the space data. In addition, data from several other satellites and rocket experiments will augment the C/NOFS observations. Several campaigns are planned to validate operational forecasts, acquire data to achieve the science goals, and test the theoretical models.We anticipate that by the end of the C/NOFS mission, our understanding of the physics controlling the equatorial ionosphere will have advanced to the point that we will be able to nowcast and forecast the formation of ionospheric irregularities to a high degree of accuracy. However, this is not an easy task because a 2–6h forecast is required, as well as an extended prediction—a three-day “outlook”. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NAVIGATION KW - ELECTROMAGNETIC fields KW - GLOBAL Positioning System KW - PLASMA (Ionized gases) KW - Equatorial ionosphere KW - Plasma instabilities KW - Scintillation KW - Space weather N1 - Accession Number: 14873207; de La Beaujardière, O. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom AFB, MA 01731, USA; Source Info: Nov2004, Vol. 66 Issue 17, p1573; Subject Term: NAVIGATION; Subject Term: ELECTROMAGNETIC fields; Subject Term: GLOBAL Positioning System; Subject Term: PLASMA (Ionized gases); Author-Supplied Keyword: Equatorial ionosphere; Author-Supplied Keyword: Plasma instabilities; Author-Supplied Keyword: Scintillation; Author-Supplied Keyword: Space weather; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; Number of Pages: 19p; Document Type: Article L3 - 10.1016/j.jastp.2004.07.030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14873207&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Padmawar, Prashant A. AU - Canteenwala, Taizoon AU - Verma, Sarika AU - Loon-Seng Tan AU - Long Y. Chiang T1 - Synthesis and Photophysical Properties of C60-Diphenylaminofluorene Dyad and Multiads. JO - Journal of Macromolecular Science: Pure & Applied Chemistry JF - Journal of Macromolecular Science: Pure & Applied Chemistry Y1 - 2004/11// VL - 41 IS - 12 M3 - Article SP - 1387 EP - 1400 PB - Taylor & Francis Ltd SN - 10601325 AB - One mono-adduct and three novel multi-adduct analogs of C60-diphenylaminofluorene C60(>DPAF)n derivatives were synthesized and characterized by various spectroscopic methods. Optical absorption of these samples indicated a systematic increase in relative intensity of the fluorene band centered at 415 nm as the number of DPAF addend increases. Fluorescence of DPAF chromophore in all C60(>DPAF)n derivatives 4(n = 1), 5(n = 2), 6(n = 3), and 7(n = 4) in o-dichlorobenzene and chloroform was found to be efficiently quenched as the direct covalent bond attachment of DPAF moieties to the fullerene cage facilitates efficient intramolecular electron or energy transfer processes. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Macromolecular Science: Pure & Applied Chemistry is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUORENE KW - METHANE KW - CYCLOHEPTAFLUORENE KW - CHARGE exchange KW - CHARGE transfer KW - C60 KW - Diphenylaminofluorene KW - Dyad, Multiads KW - Electron transfer N1 - Accession Number: 15043476; Padmawar, Prashant A. 1 Canteenwala, Taizoon 1 Verma, Sarika 1 Loon-Seng Tan 2 Long Y. Chiang 1; Email Address: long_chiang@uml.edu; Affiliation: 1: Department of Chemistry, Institute of Nanoscience and Engineering Technology, University of Massachusetts Lowell, Lowell, Massachusetts, USA 2: Polymer Branch, AFRL MLBP, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio, USA; Source Info: Nov2004, Vol. 41 Issue 12, p1387; Subject Term: FLUORENE; Subject Term: METHANE; Subject Term: CYCLOHEPTAFLUORENE; Subject Term: CHARGE exchange; Subject Term: CHARGE transfer; Author-Supplied Keyword: C60; Author-Supplied Keyword: Diphenylaminofluorene; Author-Supplied Keyword: Dyad, Multiads; Author-Supplied Keyword: Electron transfer; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 14p; Illustrations: 2 Diagrams, 6 Graphs; Document Type: Article L3 - 10.1081/MA-200035292 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15043476&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lach-hab, M. AU - Akdim, B. AU - Papaconstantopoulos, D.A. AU - Mehl, M.J. AU - Bernstein, N. T1 - Application of the NRL tight-binding method to the heavy elements Pb and Po JO - Journal of Physics & Chemistry of Solids JF - Journal of Physics & Chemistry of Solids Y1 - 2004/11// VL - 65 IS - 11 M3 - Article SP - 1837 EP - 1842 SN - 00223697 AB - We have applied the NRL tight-binding (TB) method to study the mechanical and electronic properties of the heavy elements Pb and Po. The predicted properties include ground-state structure, electronic band structure and elastic moduli. Phonon-dispersion curves at T=0K were also determined. As demonstrated in this paper, the results are in good agreement with the full potential linearized augmented plane wave calculations and the available experimental data. In addition, we performed molecular-dynamics simulations to obtain various temperature-dependent quantities of Pb such as the atomic mean-square displacement, Debye-Waller factor and thermal expansion coefficient. With our TB we have also calculated the vacancy formation energy of Pb. Finally, we report on the effects of spin–orbit coupling, through our TB scheme, on electronic structure and energetic properties. [Copyright &y& Elsevier] AB - Copyright of Journal of Physics & Chemistry of Solids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMAL expansion KW - ELASTICITY KW - DISPERSION KW - TEMPERATURE KW - D. Elastic properties KW - D. Electronic structure KW - D. Equations-of-state KW - D. Mechanical properties KW - D. Phonons KW - D. Thermal expansion N1 - Accession Number: 14579610; Lach-hab, M.; Email Address: lachhab@dave.nrl.navy.mil Akdim, B. 1 Papaconstantopoulos, D.A. 2 Mehl, M.J. 2 Bernstein, N. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH 45433-7702, USA 2: Center for Computational Materials Science, Naval Research Laboratory, Washington, DC 20375, USA; Source Info: Nov2004, Vol. 65 Issue 11, p1837; Subject Term: THERMAL expansion; Subject Term: ELASTICITY; Subject Term: DISPERSION; Subject Term: TEMPERATURE; Author-Supplied Keyword: D. Elastic properties; Author-Supplied Keyword: D. Electronic structure; Author-Supplied Keyword: D. Equations-of-state; Author-Supplied Keyword: D. Mechanical properties; Author-Supplied Keyword: D. Phonons; Author-Supplied Keyword: D. Thermal expansion; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.jpcs.2004.06.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14579610&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Erdman, P.S. AU - Larson, C.W. AU - Fajardo, M. AU - Sando, K.M. AU - Stwalley, W.C. T1 - Optical absorption of lithium metal vapor at high temperatures JO - Journal of Quantitative Spectroscopy & Radiative Transfer JF - Journal of Quantitative Spectroscopy & Radiative Transfer Y1 - 2004/11// VL - 88 IS - 4 M3 - Article SP - 447 EP - 481 SN - 00224073 AB - Experimental results are reported for a unique spectroscopic device called the Plasma Spectroscopy Cell. Optical absorption of lithium metal vapor was observed at high density and temperature. Absorption spectra are analyzed using theoretical calculations of absorption cross sections for lithium–helium interactions, and singlet and triplet state transitions of diatomic lithium in the visible spectral range. This is believed to be the most complex example yet calculated in which absolute bound–bound, bound–free, free–bound, and free–free contributions for all possible optically allowed transitions are all included, in quite respectable agreement with experiment. [Copyright &y& Elsevier] AB - Copyright of Journal of Quantitative Spectroscopy & Radiative Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRUM analysis KW - HIGH temperatures KW - HEAT KW - RADIATION KW - High temperature spectra KW - Lithium vapor KW - Optical absorption N1 - Accession Number: 13954985; Erdman, P.S. 1 Larson, C.W. 2 Fajardo, M. 2 Sando, K.M. 3 Stwalley, W.C. 4; Email Address: stwalley@uconnvm.uconn.edu; Affiliation: 1: Department of Physics, University of Wisconsin-Marinette, Marinette, WI 54143, USA 2: Air Force Research Laboratory, Edwards AFB, CA 93524, USA 3: Department of Chemistry, University of Iowa, Iowa City, IA 52240, USA 4: Department of Physics, University of Connecticut, Storrs, CT 06269, USA; Source Info: Nov2004, Vol. 88 Issue 4, p447; Subject Term: SPECTRUM analysis; Subject Term: HIGH temperatures; Subject Term: HEAT; Subject Term: RADIATION; Author-Supplied Keyword: High temperature spectra; Author-Supplied Keyword: Lithium vapor; Author-Supplied Keyword: Optical absorption; Number of Pages: 35p; Document Type: Article L3 - 10.1016/j.jqsrt.2004.04.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13954985&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vaia, Richard A. AU - Wagner, H. Daniel T1 - Framework for nanocomposites JO - Materials Today JF - Materials Today Y1 - 2004/11// VL - 7 IS - 11 M3 - Article SP - 32 EP - 37 SN - 13697021 AB - Materials and material development are fundamental to our very culture. We even ascribe major historical periods of our society to materials such as the stone age, bronze age, iron age, steel age (the industrial revolution), polymer age, silicon age, and silica age (the telecoms revolution). This reflects how important materials are to us. We have, and always will, strive to understand and modify the world around us and the stuff of which it is made. As the 21st century unfolds, it is becoming more apparent that the next technological frontiers will be opened not through a better understanding and application of a particular material, but rather by understanding and optimizing material combinations and their synergistic function, hence blurring the distinction between a material and a functional device comprised of distinct materials. [Copyright &y& Elsevier] AB - Copyright of Materials Today is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PREHISTORIC peoples KW - INDUSTRIAL revolution KW - SOCIAL history KW - SILICON compounds KW - TELECOMMUNICATION systems N1 - Accession Number: 19277800; Vaia, Richard A. 1; Email Address: Richard.Vaia@wpafb.af.mil Wagner, H. Daniel 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, OH 45433-7750, USA 2: Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot 76100, Israel; Source Info: Nov2004, Vol. 7 Issue 11, p32; Subject Term: PREHISTORIC peoples; Subject Term: INDUSTRIAL revolution; Subject Term: SOCIAL history; Subject Term: SILICON compounds; Subject Term: TELECOMMUNICATION systems; NAICS/Industry Codes: 517410 Satellite Telecommunications; Number of Pages: 6p; Document Type: Article L3 - 10.1016/S1369-7021(04)00506-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19277800&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wagner, H. Daniel AU - Vaia, Richard A. T1 - Nanocomposites: issues at the interface JO - Materials Today JF - Materials Today Y1 - 2004/11// VL - 7 IS - 11 M3 - Article SP - 38 EP - 42 SN - 13697021 AB - Carbon nanotubes (CNTs), whether single- or multi-walled (SWNT or MWNT, respectively), have, in an unparalleled fashion, grabbed the attention of both researchers and business leaders within the polymer community. The vast potential afforded by the unprecedented combination of mechanical, electrical, and thermal properties within one nanoscale additive opens new vistas for commodity plastics, elastomers, adhesives, and coatings, as well as new specialty systems with never-before-realized combinations of material properties within a processible plastic or fiber [Copyright &y& Elsevier] AB - Copyright of Materials Today is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - MACROMOLECULES KW - ELASTOMERS KW - NANOTUBES KW - FULLERENES KW - SYNTHETIC products KW - SURFACES (Technology) N1 - Accession Number: 19277801; Wagner, H. Daniel 1; Email Address: daniel.wagner@weizmann.ac.il Vaia, Richard A. 2; Affiliation: 1: Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot 76100, Israel 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, OH 45433-7750, USA; Source Info: Nov2004, Vol. 7 Issue 11, p38; Subject Term: POLYMERS; Subject Term: MACROMOLECULES; Subject Term: ELASTOMERS; Subject Term: NANOTUBES; Subject Term: FULLERENES; Subject Term: SYNTHETIC products; Subject Term: SURFACES (Technology); NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325212 Synthetic Rubber Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/S1369-7021(04)00507-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19277801&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cliver, E. W. AU - Nitta, N. V. AU - Thompson, B. J. AU - Zhang, J. T1 - Coronal Shocks of November 1997 Revisited: The Cme-Type II Timing Problem. JO - Solar Physics JF - Solar Physics Y1 - 2004/11// VL - 225 IS - 1 M3 - Article SP - 105 EP - 139 PB - Springer Science & Business Media B.V. SN - 00380938 AB - We re-examine observations bearing on the origin of metric type II bursts for six impulsive solar events in November 1997. Previous analyses of these events indicated that the metric type IIs were due to flares (either blast waves or ejecta). Our point of departure was the study of Zhanget al. (2001) based on the Large Angle and Spectrometric Coronagraph’s C1 instrument (occulting disk at 1.1R0) that identified the rapid acceleration phase of coronal mass ejections (CMEs) with the rise phase of soft X-ray light curves of associated flares. We find that the inferred onset of rapid CME acceleration in each of the six cases occurred 1-3 min before the onset of metric type II emission, in contrast to the results of previous studies for certain of these events that obtained CME launch times ~25-45 min earlier than type II onset. The removal of the CME-metric type II timing discrepancy in these events and, more generally, the identification of the onset of the rapid acceleration phase of CMEs with the flare impulsive phase undercuts a significant argument against CMEs as metric type II shock drivers. In general, the six events exhibited: (1) ample evidence of dynamic behavior [soft X-ray ejecta, extreme ultra-violet imaging telescope (EIT) dimming onsets, and wave initiation (observed variously in Ha, EUV, and soft X-rays)] during the inferred fast acceleration phases of the CMEs, consistent with the cataclysmic disruption of the low solar atmosphere one would expect to be associated with a CME; and (2) an organic relationship between EIT dimmings (generally taken to be source regions of CMEs) and EIT waves (which are highly associated with metric type II bursts) indicative of a CME-driver scenario. Our analysis indicates that the broad (~90? to halo) CMEs observed in the outer LASCO coronagraphs for these impulsive events began life as relatively small-scale structures, with angular spans of ~15? in the low corona. A review of on-going work bearing on other aspects (than timing) of the question of the origin of metric type II bursts (CME association; connectivity of metric and decametric-hectometric type II shocks; spatial relationship between CMEs and metric shocks) leads to the conclusion that CMEs remain a strong candidate to be the principal/sole driver of metric type II shocks vis-à-vis flare blast waves/ejecta. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR flares KW - SOLAR activity KW - CORONAL mass ejections KW - CORONAGRAPHS KW - X-rays KW - IMAGING systems N1 - Accession Number: 16635383; Cliver, E. W. 1; Email Address: edward.cliver@hanscom.af.mil Nitta, N. V. 2; Email Address: nitta@lmsal.com Thompson, B. J. 3; Email Address: barbara.j.thompson@nasa.gov Zhang, J. 4; Email Address: jiez@scs.gmu.edu; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA 01731-3010, USA. 2: Lockheed Martin Solar and Astrophysics Laboratory, O/L9-41, B/252, 3251 Hanover Street, Palo Alto, CA 94304, USA. 3: NASA Goddard Space Flight Center, Code 682.3, Greenbelt, MD 20771, USA. 4: Center for Earth Observing and Space Research, George Mason University, Fairfax, VA 22030, USA.; Source Info: Nov2004, Vol. 225 Issue 1, p105; Subject Term: SOLAR flares; Subject Term: SOLAR activity; Subject Term: CORONAL mass ejections; Subject Term: CORONAGRAPHS; Subject Term: X-rays; Subject Term: IMAGING systems; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; Number of Pages: 35p; Document Type: Article L3 - 10.1007/s11207-004-3258-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16635383&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jackson, B. V. AU - Buffington, A. AU - Hick, P. P. AU - Altrock, R. C. AU - Figueroa, S. AU - Holladay, P. E. AU - Johnston, J. C. AU - Kahler, S. W. AU - Mozer, J. B. AU - Price, S. AU - Radick, R. R. AU - Sagalyn, R. AU - Sinclair, D. AU - Simnett, G. M. AU - Eyles, C. J. AU - Cooke, M. P. AU - Tappin, S. J. AU - Kuchar, T. AU - Mizuno, D. AU - Webb, D. F. T1 - The Solar Mass-Ejection Imager (SMEI) Mission. JO - Solar Physics JF - Solar Physics Y1 - 2004/11// VL - 225 IS - 1 M3 - Article SP - 177 EP - 207 PB - Springer Science & Business Media B.V. SN - 00380938 AB - We have launched into near-Earth orbit a solar mass-ejection imager (SMEI) that is capable of measuring sunlight Thomson-scattered from heliospheric electrons from elongations to as close as 18° to greater than 90° from the Sun. SMEI is designed to observe time-varying heliospheric brightness of objects such as coronal mass ejections, co-rotating structures and shock waves. The instrument evolved from the heliospheric imaging capability demonstrated by the zodiacal light photometers of theHeliosspacecraft. A near-Earth imager can provide up to three days warning of the arrival of a mass ejection from the Sun. In combination with other imaging instruments in deep space, or alone by making some simple assumptions about the outward flow of the solar wind, SMEI can provide a three-dimensional reconstruction of the surrounding heliospheric density structures. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORONAL mass ejections KW - HELIOSPHERE (Astrophysics) KW - SOLAR activity KW - ZODIACAL light KW - SHOCK waves KW - ASTROPHYSICS N1 - Accession Number: 16635380; Jackson, B. V. 1; Email Address: bvjackson@ucsd.edu Buffington, A. 1 Hick, P. P. 1 Altrock, R. C. 2 Figueroa, S. 2 Holladay, P. E. 2 Johnston, J. C. 2 Kahler, S. W. 2 Mozer, J. B. 2 Price, S. 2 Radick, R. R. 2 Sagalyn, R. 2 Sinclair, D. 2 Simnett, G. M. 3 Eyles, C. J. 3 Cooke, M. P. 3 Tappin, S. J. 3 Kuchar, T. 4 Mizuno, D. 4 Webb, D. F. 4; Affiliation: 1: Center for Astrophysics and Space Sciences, University of California at San Diego, La Jolla, CA, U.S.A. 2: Air Force Research Laboratory/Space Vehicles Directorate (AFRL/VS), Hanscom AFB, MA, U.S.A. 3: School of Physics and Space Research, University of Birmingham, U.K. 4: ISR, Boston College, Chestnut Hill, MA, U.S.A.; Source Info: Nov2004, Vol. 225 Issue 1, p177; Subject Term: CORONAL mass ejections; Subject Term: HELIOSPHERE (Astrophysics); Subject Term: SOLAR activity; Subject Term: ZODIACAL light; Subject Term: SHOCK waves; Subject Term: ASTROPHYSICS; Number of Pages: 31p; Document Type: Article L3 - 10.1007/s11207-004-2766-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16635380&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wu, J.-H. AU - Rigney, D.A. AU - Falk, M.L. AU - Sanders, J.H. AU - Voevodin, A.A. AU - Zabinski, J.S. T1 - Tribological behavior of WC/DLC/WS2 nanocomposite coatings JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2004/11// VL - 188-189 M3 - Article SP - 605 EP - 611 SN - 02578972 AB - The sliding behavior of amorphous DLC coatings, with or without hydrogen (i.e., a-C or a-C:H), depends on environment. Nanocomposite coatings developed at the Air Force Research Laboratory are designed for operation in environments ranging from humid air to the vacuum of space, as required for aerospace applications. A magnetron sputter-assisted pulsed laser deposition process was used to produce coatings with a matrix of DLC and nanoparticles of both WC and WS2. Coatings were tested on a pin/disk tribometer equipped with an environmental chamber and an in situ Kelvin probe. Low friction was achieved in both air and vacuum. Post-test characterization of disk wear tracks, pin wear scars and debris involved the use of scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS), focused ion beam/transmission electron microscopy (FIB/TEM), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. Surface material with mixed components dominates the tribological behavior of these coatings in both air and vacuum. Molecular dynamics (MD) is being used to model an amorphous material containing crystalline nanoparticles. Results suggest that soft particles (e.g., WS2) tend to mix with the local matrix material rather than spreading on the surface as a separate layer. This is consistent with experimental observations. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE coatings KW - TRIBOLOGY KW - SPECTRUM analysis KW - SURFACES (Technology) KW - DLC coatings KW - Molecular dynamics KW - Raman spectroscopy N1 - Accession Number: 14973288; Wu, J.-H. 1 Rigney, D.A.; Email Address: Rigney.1@OSU.edu Falk, M.L. 2 Sanders, J.H. 3 Voevodin, A.A. 3 Zabinski, J.S. 3; Affiliation: 1: Department of Materials Science and Engineering, Ohio State University, 177 Watts Hall, 2041 College Road, Columbus, OH 43210-1778, United States 2: Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, United States 3: MLBT, Air Force Research Laboratory, WPAFB, Dayton, OH 45433-7750, United States; Source Info: Nov2004, Vol. 188-189, p605; Subject Term: SURFACE coatings; Subject Term: TRIBOLOGY; Subject Term: SPECTRUM analysis; Subject Term: SURFACES (Technology); Author-Supplied Keyword: DLC coatings; Author-Supplied Keyword: Molecular dynamics; Author-Supplied Keyword: Raman spectroscopy; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.surfcoat.2004.07.079 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14973288&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Juhl, Shane AU - Phillips, David AU - Vaia, Richard A. AU - Lyuksyutov, Sergei F. AU - Paramonov, Pavel B. T1 - Precise formation of nanoscopic dots on polystyrene film using z-lift electrostatic lithography. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/10/25/ VL - 85 IS - 17 M3 - Article SP - 3836 EP - 3838 PB - American Institute of Physics SN - 00036951 AB - Z-lift electrostatic lithography on thin (10–50 nm) polystyrene (PS) films is discussed. The height of nanostructures can be controlled via mechanically drawing or depressing the cantilever height (z-lift) during the application of a voltage. Since polymer is not removed or crosslinked during structure formation, the features are erasable. Various aspects such as voltage doses, film thickness, z-lift height, and rate are explored. Structure height formation relies mainly on, and is proportional, to the z-lift magnitude; however, only a narrow range of voltages yields structures for any given film thickness. Structures ranging from 0–10 nm are produced on a 40 nm thick PS film using -36 V by varying the z-lift on a 0.1–0.9 N/m cantilever from -20 nm to +400 nm. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURES KW - POLYSTYRENE KW - LITHOGRAPHY KW - THIN films KW - THICK films N1 - Accession Number: 14909811; Juhl, Shane 1; Email Address: shane.juhl@wpafb.af.mil Phillips, David 1 Vaia, Richard A. 1 Lyuksyutov, Sergei F. 2 Paramonov, Pavel B. 2; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Departments of Physics and Polymer Engineering, The University of Akron, Akron, Ohio; Source Info: 10/25/2004, Vol. 85 Issue 17, p3836; Subject Term: NANOSTRUCTURES; Subject Term: POLYSTYRENE; Subject Term: LITHOGRAPHY; Subject Term: THIN films; Subject Term: THICK films; NAICS/Industry Codes: 323119 Other printing; NAICS/Industry Codes: 326140 Polystyrene Foam Product Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.1807012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14909811&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nainaparampil, J.J. AU - Phani, A.R. AU - Krzanowski, J.E. AU - Zabinski, J.S. T1 - Pulsed laser-ablated MoS2-Al films: friction and wear in humid conditions JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2004/10/22/ VL - 187 IS - 2/3 M3 - Article SP - 326 EP - 335 SN - 02578972 AB - The application of MoS2 as a solid lubricant in dry conditions is well established, but the presence of humidity degrades the tribological behavior of MoS2 films. There has been much progress toward increasing the efficiency of MoS2 films in humid environments by using various additives. In our work, aluminum is evaluated as an additive because of its affinity for O2 and (OH) compared to Mo and its potential to modify transfer film formation. The MoS2 films examined here were deposited on 440C steel substrates by laser ablation along with simultaneous magnetron sputtering of Al. The friction and wear studies were made on a ball on disc tribometer. Films containing Al outperformed pure MoS2. Under optimal conditions, 1–2-μm-thick films with ∼8% aluminum had a wear life of 150 to 250 K cycles in 25% humidity. Micro-Raman and X-ray photoelectron spectroscopy (XPS) were used to analyze chemistry and scanning electron microscopy (SEM) was used to study the morphology and film cross-section. Nanoindentation showed that Al addition did not increase film hardness. The role of aluminum in increasing the wear life of laser-ablated MoS2 films in humid conditions is discussed. The mechanism controlling the increased wear life is partially explained by showing that Al is gradually turned into alumina, creating an adhesive and lubricating mix of wear debris under tribostress in humid surroundings. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM KW - HUMIDITY KW - LASERS KW - MICROSCOPY KW - Aluminum KW - Molybdenum disulphide KW - Pulsed laser deposition KW - Tribology KW - X-ray diffraction spectroscopy N1 - Accession Number: 14512079; Nainaparampil, J.J. 1; Email Address: jose.nain@wpafb.af.mil Phani, A.R. 2 Krzanowski, J.E. 2 Zabinski, J.S. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Bldg. 654-2941 Hobson St., Dayton, OH 45433-7750, USA 2: Department of Mechanical Engineering, University of New Hampshire, Kingsbury Hall, Durham, NH 03824, USA; Source Info: Oct2004, Vol. 187 Issue 2/3, p326; Subject Term: ALUMINUM; Subject Term: HUMIDITY; Subject Term: LASERS; Subject Term: MICROSCOPY; Author-Supplied Keyword: Aluminum; Author-Supplied Keyword: Molybdenum disulphide; Author-Supplied Keyword: Pulsed laser deposition; Author-Supplied Keyword: Tribology; Author-Supplied Keyword: X-ray diffraction spectroscopy; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.surfcoat.2004.02.043 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14512079&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, S.I. AU - Parthasarathy, T.A. AU - Dimiduk, D.M. AU - Hazzledine, P.M. T1 - Discrete dislocation simulations of precipitation hardening in superalloys. JO - Philosophical Magazine JF - Philosophical Magazine Y1 - 2004/10/21/ VL - 84 IS - 30 M3 - Article SP - 3195 EP - 3215 SN - 14786435 AB - The low-temperature yield stress of a nickel-based superalloy, containing up to 40% Ni3Al precipitates (γ'), is calculated by discrete dislocation simulations. A pair of screw or 60°(a/2)(110) dislocation glides under external stress across a [111] plane of γ phase, intersected by a random distribution of either spherical or cubic γ' precipitates. The stress is raised until the dislocations can cut or bow round all the obstacles. In this paper the emphasis is on the cutting regime which is prevalent when the precipitates are small and/or have low antiphase-boundary (APB) energies. From a large number of simulations in the cutting regime, the effects of size, shape, volume fraction and APB energy are found to be as follows: The yield stress is proportional to the square root of the volume fraction of γ'. The yield stress depends weakly on the precipitate size in the size range 20-400 nm, for APB energies of 150, 250 and 320 mJ m-2. The yield stress depends linearly on the APB energy for APB energies up to 320 mJ m-2 in the size range 50-200 nm. At a precipitate size of 100 nm, cubes are weaker obstacles than equivalent spheres by about 25% for an APB energy of 320 mJ m-2 however, the shape effect on strengthening decreases with decreasing APB energy and decreasing precipitate size. When a coherency stress (from a lattice parameter mismatch of 0.3%) is added, the yield stress increases by about 10%. When solid-solution strengthening is added, it is potent when the solute is in the γ matrix, but much less potent when the solute is in γ'. When the γ' precipitates are larger than 400 nm across and the APB energy greater than 250 mJ m-2, significant Orowan looping occurs. The yield stress drops inversely as the precipitate size and becomes insensitive to the APB energy but sensitive to the shear modulus. Many of these results from the full simulations differ from the analytical models of strengthening in superalloys but they can be rationalized from the results of simulations on simple homogenized precipitate structures. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Magazine is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT resistant alloys KW - STRAIN hardening KW - STRAINS & stresses (Mechanics) KW - PRECIPITATION (Chemistry) KW - ALLOYS KW - HEAT resistant materials N1 - Accession Number: 15059751; Rao, S.I. 1; Email Address: Satish.Rao@wpafb.af.mil Parthasarathy, T.A. 1 Dimiduk, D.M. 2 Hazzledine, P.M. 1; Affiliation: 1: UES Inc., Dayton-Xenia, Rd., Dayton, Ohio, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate Wright-Patterson Air Force Base, Ohio, USA; Source Info: 10/21/2001, Vol. 84 Issue 30, p3195; Subject Term: HEAT resistant alloys; Subject Term: STRAIN hardening; Subject Term: STRAINS & stresses (Mechanics); Subject Term: PRECIPITATION (Chemistry); Subject Term: ALLOYS; Subject Term: HEAT resistant materials; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 21p; Document Type: Article L3 - 10.1080/14786430412331284432 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15059751&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kramer, Ryan M. AU - Chester Li AU - Carter, Daniel C. AU - Stone, Morley O. AU - Naik, Rajesh R. T1 - Engineered Protein Cages for Nanomaterial Synthesis. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2004/10/20/ VL - 126 IS - 41 M3 - Article SP - 13282 EP - 13286 SN - 00027863 AB - Self-assembled particles of genetically engineered human L subunit ferritin expressing a silver- binding peptide were used as nanocontainers for the synthesis of silver nanoparticles. The inner cavity of the self-assembled protein cage displays a dodecapeptide that is capable of reducing silver ions to metallic silver. This chimeric protein cage when incubated in the presence of silver nitrate exhibits the growth of a silver nanocrystal within its cavity. Our studies indicate that it is possible to design chimeric cages, using specific peptide templates, for the growth of other inorganic nanoparticles. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTEINS KW - BIOMOLECULES KW - SILVER KW - NANOPARTICLES KW - PEPTIDES KW - FERRITIN N1 - Accession Number: 14879555; Kramer, Ryan M. 1 Chester Li 2 Carter, Daniel C. 2 Stone, Morley O. 1 Naik, Rajesh R. 1; Email Address: Rajesh.Naik@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Biotechnology Group, Wright-Patterson Air Force Base, Dayton, Ohio 45433, 2: New Century Phannaceuticals, 895 Martin Road, Hunstville, Alabama 35824; Source Info: 10/20/2004, Vol. 126 Issue 41, p13282; Subject Term: PROTEINS; Subject Term: BIOMOLECULES; Subject Term: SILVER; Subject Term: NANOPARTICLES; Subject Term: PEPTIDES; Subject Term: FERRITIN; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14879555&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Weijie Lu AU - Feldman, L.C. AU - Song, Y. AU - Dhar, S. AU - Collins, W.E. AU - Mitchel, W.C. AU - Williams, J.R. T1 - Graphitic features on SiC surface following oxidation and etching using surface enhanced Raman spectroscopy. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/10/18/ VL - 85 IS - 16 M3 - Article SP - 3495 EP - 3497 PB - American Institute of Physics SN - 00036951 AB - Graphitic features are detected on 4H-SiC surface following oxidation and etching using surface enhanced Raman spectroscopy (SERS). The electronic state of the carbon is sp2 on both the Si- and C-faces of 4H-SiC. The structures of the “carbon clusters” consist of two-dimensional graphitic flakes less than 2 nm and one-dimensional polyenes. The degree of graphitization on the C-face SiC is higher than those on the Si-face SiC. This study provides experimental evidence for “carbon clusters” existing on SiC surfaces following oxidation at atmospheric pressure and demonstrates that SERS is an effective technique to probe low concentration species on the SiC surface. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN spectroscopy KW - CARBON KW - OXIDATION KW - GRAPHITIZATION KW - ATMOSPHERIC pressure KW - SURFACE chemistry N1 - Accession Number: 14803315; Weijie Lu 1; Email Address: wlu@fisk.edu Feldman, L.C. 2 Song, Y. 2 Dhar, S. 2 Collins, W.E. 1 Mitchel, W.C. 3 Williams, J.R. 4; Affiliation: 1: Department of Physics, Fisk University, Nashville, Tennessee 37208 2: Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433 4: Department of Physics, Auburn University, Auburn, Alabama 36849; Source Info: 10/18/2004, Vol. 85 Issue 16, p3495; Subject Term: RAMAN spectroscopy; Subject Term: CARBON; Subject Term: OXIDATION; Subject Term: GRAPHITIZATION; Subject Term: ATMOSPHERIC pressure; Subject Term: SURFACE chemistry; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.1804610 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14803315&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lobad, Ahmed I. AU - Schlie, L. A. Vern T1 - Intervalence band absorption and carrier heating in type-II Sb-based lasers. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/10/15/ VL - 96 IS - 8 M3 - Article SP - 4066 EP - 4071 PB - American Institute of Physics SN - 00218979 AB - The intervalence absorption in InAs/InGaSb/InAs type-II 4 μm quantum well laser structure was investigated using band-edge nonlinear pump-probe spectroscopy techniques where two pump beams chopped at different frequencies are used to excite the sample. The spectrally resolved probe nonlinearity is measured at the sum frequency. Given their different characteristic nonlinearities, the contribution of the intervalence band absorption process (IVA) was resolved from that of the interband gain dynamics. The IVA absorption occurs at in-plane momentum k∥∼0.025 Å and is not resonant with the interband lasing energy, therefore does not compete with the interband transition at low temperature and low carrier densities. A density dependent interband transition matrix element of N0.17 was deduced reflecting the enhancement of the electron hole wave function overlap due to the space-charge fields in the type-II wells. Significant lattice heating observed above 80 K is reflected in the growth of an out of phase slow signal, resulting from the reduction of lattice thermal conductivity and a possible IVA resonance enhanced nonradiative Auger recombination transitions at higher temperatures. Thermal diffusion times of the order of ∼100 μs that increases with temperature were measured. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTIMONY KW - QUANTUM wells KW - TEMPERATURE KW - THERMAL diffusivity KW - DIFFUSION KW - PHYSICS N1 - Accession Number: 14604143; Lobad, Ahmed I. 1 Schlie, L. A. Vern 1; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate (AFRI/DEL), 3550 Aberdeen Avenue, SE, Kirtland Air Force Base, New Mexico 87117; Source Info: 10/15/2004, Vol. 96 Issue 8, p4066; Subject Term: ANTIMONY; Subject Term: QUANTUM wells; Subject Term: TEMPERATURE; Subject Term: THERMAL diffusivity; Subject Term: DIFFUSION; Subject Term: PHYSICS; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 6p; Illustrations: 1 Diagram, 5 Graphs; Document Type: Article L3 - 10.1063/1.1792806 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14604143&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mukhopadhyay, Sanghamitra AU - Sushko, Peter V. AU - Edwards, Arthur H. AU - Shluger, Alexander L. T1 - Calculation of relative concentrations of E′ centres in amorphous silica JO - Journal of Non-Crystalline Solids JF - Journal of Non-Crystalline Solids Y1 - 2004/10/15/ VL - 345-346 M3 - Article SP - 703 EP - 709 SN - 00223093 AB - Abstract: We have used two different ideal continuous random network structures to model a-SiO2, and the embedded cluster method to study the structure and relative concentrations of E′ type centres in a-SiO2. We assume that E′ centres can be formed at any site of the amorphous structure with equal probability and find a good correlation between the average Si–O distance at a particular oxygen site and the hyperfine splitting on the Si nuclei of the formed E′ centre. Using this correlation we find the relative concentration of dimer type and dangling bond type centres of about 1:4. We estimate that only 10% of Eγ centres will have the structure similar to that of puckered E1 centre in α-quartz. [Copyright &y& Elsevier] AB - Copyright of Journal of Non-Crystalline Solids is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AMORPHOUS substances KW - SILICA KW - MOLECULAR structure KW - CORRELATION (Statistics) KW - G205 N1 - Accession Number: 15801186; Mukhopadhyay, Sanghamitra 1,2 Sushko, Peter V. 1,2 Edwards, Arthur H. 2 Shluger, Alexander L. 1; Email Address: a.shluger@ucl.ac.uk; Affiliation: 1: Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK 2: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Avenue SE, KAFB, NM 87117-5776, USA; Source Info: Oct2004, Vol. 345-346, p703; Subject Term: AMORPHOUS substances; Subject Term: SILICA; Subject Term: MOLECULAR structure; Subject Term: CORRELATION (Statistics); Author-Supplied Keyword: G205; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jnoncrysol.2004.08.154 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15801186&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fernandez AU - A. I. AU - Midey AU - A. J. AU - Miller AU - T. M. AU - Viggiano AU - A. A. T1 - Reaction Kinetics of PO2Cl-, PO2Cl2-, POCl2-, and POCl3- with O2 and O3 from 163 to 400 K. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2004/10/15/ VL - 108 IS - 42 M3 - Article SP - 9120 EP - 9125 SN - 10895639 AB - Rate constants and product ion branching fractions for the gas-phase reactions of O2 and O3 with the anions (a) PO2Cl-, (b) POCl3-, (c) POCl2-, and (d) PO2Cl2- were measured in a selected-ion flow tube (SIFT). The kinetics were measured at temperatures of 163-400 K and a He pressure of 0.4 Torr. Only PO2Cl- reacts with O2 to a measurable extent, having k(163-400 K) = 1.1 × 10-8(T/K)-1.0 cm3 molecule-1 s-1, while O3 reacts with all of the anions except PO2Cl2-. The fitted rate constant expressions for the O3 reaction with anions a-c are as follows: ka(163-400 K) = 3.5 × 10-6(T/K)-1.6, kb(163-400 K) = 4.0 × 10-7(T/K)-1.2, and kc(163-400 K) = 3.7 × 10-7(T/K)-1.4 cm3 molecule-1 s-1. Calculations were performed at the G3 level of theory to obtain optimized geometries, energies, and electron affinities (EAs) of the reactant and product species, as well as to determine the reaction thermochemistry to help understand the experimental results. The POxCly- anions that have lower electron binding energies (eBE) and higher spin multiplicities are more reactive. The doublets are more labile than the singlets. How the extra electron density is distributed in the anion does not predict the observed reactivity of the ion. The reactions of PO2Cl- with O2 and O3 yield predominantly PO3- and PO4-. The reaction of POCl2- with O3 yields mostly Cl- and PO2Cl2-, while the POCl3- reaction with O3 yields mostly O3- and PO2Cl2-. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL kinetics KW - CHEMICAL reactions KW - IONS KW - CHEMICAL processes N1 - Accession Number: 16387096; Fernandez A. I. 1 Midey A. J. 1 Miller T. M. 1 Viggiano A. A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom AFB, Massachusetts 01731-3010; Source Info: Oct2004, Vol. 108 Issue 42, p9120; Subject Term: CHEMICAL kinetics; Subject Term: CHEMICAL reactions; Subject Term: IONS; Subject Term: CHEMICAL processes; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16387096&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Midey, Anthony J. AU - Miller, Thomas M. AU - Viggiano, A. A. T1 - Reactions of N+, N2+, and N3+ with NO from 300 to 1400 K. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2004/10/08/ VL - 121 IS - 14 M3 - Article SP - 6822 EP - 6829 PB - American Institute of Physics SN - 00219606 AB - Rate constants have been measured from 300 to 1400 K in a selected ion flow tube (SIFT) and a high temperature flowing afterglow for the reactions of N+, N2+ and N3+ with NO. In all of the systems, the rate constants are substantially less than the collision rate constant. Comparing the high temperature results to kinetics studies as a function of translational energy show that all types of energy (translational, rotational, and vibrational) affect the reactivity approximately equally for all three ions. Branching ratios have also been measured at 300 and 500 K in a SIFT for the N+ and N3+ reactions. An increase in the N2+ product at the expense of NO+ nondissociative charge transfer product occurs at 500 K with N+. The branching ratios for the reaction of N3+ with NO have also been measured in the SIFT, showing that only nondissociative charge transfer giving NO+ occurs up to 500 K. The current results are discussed in the context of the many previous studies of these ions in the literature. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NITROGEN KW - ION flow dynamics KW - NITRIC oxide KW - COLLISIONS (Nuclear physics) KW - HIGH temperatures KW - ELECTRONS N1 - Accession Number: 14593018; Midey, Anthony J. 1; Email Address: anthony.midey@hanscom.af.mil Miller, Thomas M. 1 Viggiano, A. A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts 01731-3010; Source Info: 10/8/2004, Vol. 121 Issue 14, p6822; Subject Term: NITROGEN; Subject Term: ION flow dynamics; Subject Term: NITRIC oxide; Subject Term: COLLISIONS (Nuclear physics); Subject Term: HIGH temperatures; Subject Term: ELECTRONS; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 8p; Illustrations: 1 Chart, 8 Graphs; Document Type: Article L3 - 10.1063/1.1792232 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14593018&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shiffler, D. AU - Zhou, O. AU - Bower, C. AU - Lacour, M. AU - Golby, K. T1 - A High-Current, Large-Area, Carbon Nanotube Cathode. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/10/02/Oct2004 Part 2 of 2 VL - 32 IS - 5 M3 - Article SP - 2152 EP - 2154 SN - 00933813 AB - Carbon nanotubes (CNTs) have attracted great attention as electron emitters. These field emission cathodes operate at room temperature without a heater, in contrast to thermionic emitters that often require considerable heater power for proper operation. Furthermore, CNTs have the advantage of large aspect ratios, allowing large local electric field enhancements at the nanotube tips, further increasing their attractiveness as field emitters. However, due primarily to materials issues such as limited emission site density, screening effects, and weak interfacial bonding, no large area cathodes have been operated at high current to date. In this paper, we report on the design, fabrication, and testing of a large- area CNT cathode operating at high-voltage (>200 kV) and high-current density (30 A/cm2 ). The cathode lifetime exceeded four thousand pulses. The current density and voltage achieved represent a significant achievement and indicate that such a cathode design can prove valuable as a high-current, large-area emitter. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOTUBES KW - FULLERENES KW - ELECTROMAGNETIC fields KW - MAGNETIC fields KW - PLASMA electrodynamics KW - CARBON N1 - Accession Number: 14894573; Shiffler, D. 1 Zhou, O. 2 Bower, C. 2 Lacour, M. 3 Golby, K. 3; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AF.B, NM 87117 USA. 2: Department of Physics and Astronomy and Curriculum in Applied and Materials Sciences, University of North Carolina, Chapel Hill, NC 27599 USA. 3: Science Applications International Corporation, Kirtland AFB, NM 87117 USA.; Source Info: Oct2004 Part 2 of 2, Vol. 32 Issue 5, p2152; Subject Term: NANOTUBES; Subject Term: FULLERENES; Subject Term: ELECTROMAGNETIC fields; Subject Term: MAGNETIC fields; Subject Term: PLASMA electrodynamics; Subject Term: CARBON; Number of Pages: 3p; Document Type: Article L3 - 10.1109/TPS.2004.835519 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14894573&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jain, Amolak C. AU - Hayes, James R. AU - Kaplan, C. T1 - Hypersonic Pressure, Skin-Friction, and Heat Transfer Distribution on Space Vehicles: Three-Dimensional Bodies. JO - AIAA Journal JF - AIAA Journal Y1 - 2004/10// VL - 42 IS - 10 M3 - Article SP - 2070 EP - 2081 SN - 00011452 AB - A new innovative engineering method is developed to predict surface quantity (pressure, skin-friction, and heat transfer) distributions on three-dimensional bodies, such as blunt-nosed bodies with circular and noncircular cross sections and bluff-nosed bodies of complex configuration. A key feature of the current procedure is to base three-dimensional effects on geometrical quantities associated with the three-dimensional body rather than the fluid mechanics of the flow on the three-dimensional body. The geometrical quantity is characteristic length associated with distinguishing features of the three-dimensional body. With the use of the stagnation Reynolds number with the characteristic length so defined in the analytical equations for each of the surface quantities, the surface quantities on three-dimensional bodies of simple and complex configurations are evaluated. The results from the engineering method on symmetrical and asymmetrical stagnation points, sphere-cones, elliptic paraboloids, and an aeroassist flight experiment vehicle, consisting of an ellipsoidal nose followed by an elliptic cone and a toroidal skirt, under hypersonic, rarefied and free molecular flow conditions agreed with available theoretical and experimental data with a reasonable accuracy. Wherever possible, emphasis is placed to provide a plausible explanation of three-dimensional fluid mechanical effects on the surface quantities of the given body. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - SKIN friction (Aerodynamics) KW - HYPERSONIC aerodynamics KW - SPACE vehicles KW - HEAT transfer KW - FRICTION KW - MATHEMATICAL models N1 - Accession Number: 14795182; Jain, Amolak C. 1 Hayes, James R. 2 Kaplan, C.; Affiliation: 1: Science and Technology Corporation, Hampton, Virginia 23666 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Oct2004, Vol. 42 Issue 10, p2070; Subject Term: AERODYNAMICS; Subject Term: SKIN friction (Aerodynamics); Subject Term: HYPERSONIC aerodynamics; Subject Term: SPACE vehicles; Subject Term: HEAT transfer; Subject Term: FRICTION; Subject Term: MATHEMATICAL models; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 12p; Illustrations: 26 Diagrams, 1 Chart; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14795182&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Luckarift, Heather R. AU - Dalton, Howard AU - Sharma, Narain D. AU - Boyd, Derek R. AU - Holt, Robert A. T1 - Isolation and characterisation of bacterial strains containing enantioselective DMSO reductase activity: application to the kinetic resolution of racemic sulfoxides. JO - Applied Microbiology & Biotechnology JF - Applied Microbiology & Biotechnology Y1 - 2004/10// VL - 65 IS - 6 M3 - Article SP - 678 EP - 685 PB - Springer Science & Business Media B.V. SN - 01757598 AB - The kinetic resolution of racemic sulfoxides by dimethyl sulfoxide (DMSO) reductases was investigated with a range of microorganisms. Three bacterial isolates (provisionally identified asCitrobacter braakii,Klebsiellasp. andSerratiasp.) expressing DMSO reductase activity were isolated from environmental samples by anaerobic enrichment with DMSO as terminal electron acceptor. The organisms reduced a diverse range of racemic sulfoxides to yield either residual enantiomer depending upon the strain used.C. braakiiDMSO-11 exhibited wide substrate specificity that included dialkyl, diaryl and alkylaryl sulfoxides, and was unique in its ability to reduce the thiosulfinate 1,4-dihydrobenzo-2, 3-dithian-2-oxide. DMSO reductase was purified from the periplasmic fraction ofC. braakiiDMSO-11 and was used to demonstrate unequivocally that the DMSO reductase was responsible for enantiospecific reductive resolution of racemic sulfoxides. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Microbiology & Biotechnology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESOLUTION (Chemistry) KW - DIMETHYL sulfoxide KW - SULFOXIDES KW - MICROORGANISMS KW - ENANTIOMERS N1 - Accession Number: 16173951; Luckarift, Heather R. 1,2; Email Address: hluckarift@gulf.net Dalton, Howard 1,2 Sharma, Narain D. 3 Boyd, Derek R. 3 Holt, Robert A. 4; Affiliation: 1: Department of Biological Sciences, The University of Warwick, Coventry, CV4 7AL, UK 2: Air Force Research Laboratory, MLQL, Building 1117, 139 Barnes Drive, Suite #2, Tyndall AFB, Tyndall AFB, FL, 32403, USA 3: School of Chemistry, The Queen's University of Belfast, Belfast, BT9 5AG, UK 4: Avecia Pharmaceuticals, Belasis Avenue, Billingham, Cleveland, TS23 1YN, UK; Source Info: Oct2004, Vol. 65 Issue 6, p678; Subject Term: RESOLUTION (Chemistry); Subject Term: DIMETHYL sulfoxide; Subject Term: SULFOXIDES; Subject Term: MICROORGANISMS; Subject Term: ENANTIOMERS; Number of Pages: 8p; Illustrations: 2 Diagrams, 3 Charts; Document Type: Article L3 - 10.1007/s00253-004-1667-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16173951&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grisch, F. AU - Attal-Tretout, B. AU - Bresson, A. AU - Bouchardy, P. AU - Katta, V.R. AU - Roquemore, W.M. T1 - Investigation of a dynamic diffusion flame of H2 in air with laser diagnostics and numerical modeling JO - Combustion & Flame JF - Combustion & Flame Y1 - 2004/10// VL - 139 IS - 1/2 M3 - Article SP - 28 EP - 38 SN - 00102180 AB - Abstract: Detailed studies of flame–vortex interactions play a vital role in improving our understanding of turbulent combustion. A combined experimental and numerical study was conducted on a low-speed, buoyant, jet diffusion flame of hydrogen in air to investigate the vortex–flame interaction and the effects of preferential diffusion on the flame''s structure. A time-dependent, axisymmetric mathematical model with detailed transport processes and a chemical-kinetics mechanism was used to simulate the dynamics of the flame. Single-shot measurements of temperature and the concentrations of molecular hydrogen (H2), the pollutant nitric oxide (NO), atomic oxygen (O), atomic hydrogen (H), and the hydroxyl radical (OH) were made using optical techniques such as coherent anti-Stokes Raman scattering, degenerate four-wave mixing, and planar laser-induced fluorescence. Temperature and mole fractions of different species are presented in two-dimensional contour maps and compared with the numerical predictions. The model predicted the behavior of the experimentally observed dynamic flame quite well, including variations in temperature and molar concentrations of fuel and tracer species such as H, OH, and NO. Discrepancies in the concentration of O atoms were also noted. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATTER -- Properties KW - SOLUTION (Chemistry) KW - MATHEMATICAL statistics KW - NITRIC oxide KW - CARS KW - DFWM KW - Diffusion flame KW - Flame–vortex interaction KW - LIF N1 - Accession Number: 19291474; Grisch, F. 1; Email Address: frederic.grisch@onera.fr Attal-Tretout, B. 1 Bresson, A. 1 Bouchardy, P. 1 Katta, V.R. 2 Roquemore, W.M. 3; Affiliation: 1: Département Mesures Physiques, Office National d'Etudes et de Recherches Aérospatiales, Fort de Palaiseau, 91761 Palaiseau Cedex, France 2: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, OH 45440-3638, USA 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Oct2004, Vol. 139 Issue 1/2, p28; Subject Term: MATTER -- Properties; Subject Term: SOLUTION (Chemistry); Subject Term: MATHEMATICAL statistics; Subject Term: NITRIC oxide; Author-Supplied Keyword: CARS; Author-Supplied Keyword: DFWM; Author-Supplied Keyword: Diffusion flame; Author-Supplied Keyword: Flame–vortex interaction; Author-Supplied Keyword: LIF; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.combustflame.2004.08.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19291474&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guerrero, Jim AU - Hamilton, Brent AU - Burton, Randy AU - Crockett, Dave AU - Taylor, Zach T1 - Upper stage flight experiment (USFE) integral structure development effort JO - Composite Structures JF - Composite Structures Y1 - 2004/10// VL - 66 IS - 1-4 M3 - Article SP - 327 EP - 337 SN - 02638223 AB - The Air Force Research Laboratory''s Space Vehicle Directorate (AFRL/VS) has established a customer focused composite tankage development program that is targeted to existing and future aerospace applications. AFRL/VS is developing a wide range of tank concepts that include linerless cryogenic tankage, self-healing cryogenic tankage, hydrogen peroxide compatible tankage, volumetrically efficient toroidal (donut shaped) geometries, and more.This paper will summarize the Upper Stage Flight Experiment (USFE) composite integral structure development effort. The integral structure refers to the stage skirt and the propellant tankage. These two parts are bonded together to form an integral structure. The USFE tank is the world''s first composite, common-bulkhead, medium-pressure vessel designed to be Class 1 Compatible with high concentrations of hydrogen peroxide. Lightweight hydrogen peroxide compatible tankage development is becoming increasingly important to the international aerospace community because it provides considerable benefits. Peroxide can be stored unpressurized and is relatively non-toxic, which makes it safer to handle and store compared to oxidizers such as hydrazine. In addition to being a viable bi-propellant oxidizer, hydrogen peroxide can also serve as a monopropellant for an attitude control system (ACS). Peroxide is not cryogenic, therefore, it does not require an on-board cryocooler, which makes it easier to meet mass budgets and to mitigate technical risk. Storability and ease of handling make high concentration hydrogen peroxide an ideal propellant for reusable launch vehicle (RLV) responsive upper stage applications. [Copyright &y& Elsevier] AB - Copyright of Composite Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROGEN peroxide KW - AERONAUTICS KW - SPACE vehicles KW - OXIDIZING agents N1 - Accession Number: 14102677; Guerrero, Jim 1; Email Address: jim.higgins@kirtland.af.mil Hamilton, Brent 1 Burton, Randy 2 Crockett, Dave 2 Taylor, Zach 3; Affiliation: 1: Air Force Research Laboratory/VS, Kirtland AFB, NM 87117, USA 2: Orbital Sciences, Corporation Chandler, AZ, 85248, USA 3: Aspect Engineering, Yorba Linda, CA 92687, USA; Source Info: Oct2004, Vol. 66 Issue 1-4, p327; Subject Term: HYDROGEN peroxide; Subject Term: AERONAUTICS; Subject Term: SPACE vehicles; Subject Term: OXIDIZING agents; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.compstruct.2004.04.069 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14102677&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - John Higgins, P.E. AU - Wegner, Peter AU - Viisoreanu, Adrian AU - Sanford, Greg T1 - Design and testing of the Minotaur advanced grid-stiffened fairing JO - Composite Structures JF - Composite Structures Y1 - 2004/10// VL - 66 IS - 1-4 M3 - Article SP - 339 EP - 349 SN - 02638223 AB - A composite grid-stiffened structure concept was selected for the payload fairing of the Minotaur launch vehicle. Compared to sandwich structures, this concept has an advantage of smaller manufacturing costs and lighter weight. To reduce weight the skin pockets are allowed to buckle visibly up to about 0.5 cm peak displacement.Various failure modes were examined for the composite grid-stiffened structure. The controlling criterion for this design was a joint failure in tension between the ribs and skin of the structure. The identification of this failure mechanism and the assessment of bounding strains required to control it required extensive test and analysis effort. Increasing skin thickness to control skin buckling resulted in reduced strains between the skin and ribs.Following the identification of the relevant failure criteria, a final design for the fairing was generated. The resulting 6 m tall fairing was constructed of a tow-placed carbon fiber composite grid structure that was over-wrapped to create a laminated skin. Upon completion of curing and machining, the fairing was cut in half to create the classic “clam-shell” fairing. Static qualification testing demonstrated the structural integrity of the fairing, thereby proving the design and manufacturing process. Loads were applied incrementally in a static loading scenario. The applied load envelope exceeded worst-case dynamic flight conditions with an added safety factor of 25%. At peak load the fairing maintained structural integrity while remaining within the required displacement envelope for payload safety.Data were collected during the test from a variety of sensors including traditional displacement transducers and strain gages. In addition, full field displacement was monitored at critically loaded fairing sections by means of digital photogrammetry. This paper summarizes the test results, presents the overall performance of the fairing under the test loads, correlates test response and analysis, and identifies lessons learned.Work continues at the Air Force Research Laboratory (AFRL) and Boeing to identify means of further controlling tensile failure of the un-reinforced polymer bonded joint between the ribs and skin. Stiffening of skin adjacent to the joints and introduction of lightweight foam jackets at the interior of the fairing both show promise of delaying joint failure to higher loads. [Copyright &y& Elsevier] AB - Copyright of Composite Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BUCKLING (Mechanics) KW - STRAINS & stresses (Mechanics) KW - MANUFACTURING processes KW - TRANSDUCERS KW - Buckling KW - Composite KW - Failure criteria KW - Fairing KW - Grid-stiffened KW - Testing N1 - Accession Number: 14102678; John Higgins, P.E. 1; Email Address: john.higgins@kirtland.af.mil Wegner, Peter 1 Viisoreanu, Adrian 2 Sanford, Greg 3; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 3550, Aberdeen Avenue, SE, Kirtland AFB, NM 87117-5776, USA 2: The Boeing Company, Phantom Works, Seattle, WA, USA 3: CSA Engineering, 3550, Aberdeen Avenue SE, Kirtland AFB, NM 87117-5776, USA; Source Info: Oct2004, Vol. 66 Issue 1-4, p339; Subject Term: BUCKLING (Mechanics); Subject Term: STRAINS & stresses (Mechanics); Subject Term: MANUFACTURING processes; Subject Term: TRANSDUCERS; Author-Supplied Keyword: Buckling; Author-Supplied Keyword: Composite; Author-Supplied Keyword: Failure criteria; Author-Supplied Keyword: Fairing; Author-Supplied Keyword: Grid-stiffened; Author-Supplied Keyword: Testing; NAICS/Industry Codes: 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables; NAICS/Industry Codes: 333994 Industrial Process Furnace and Oven Manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.compstruct.2004.04.055 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14102678&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Golden, P.J. AU - Grandt Jr., A.F. T1 - Fracture mechanics based fretting fatigue life predictions in Ti–6Al–4V JO - Engineering Fracture Mechanics JF - Engineering Fracture Mechanics Y1 - 2004/10// VL - 71 IS - 15 M3 - Article SP - 2229 SN - 00137944 AB - A fracture mechanics based crack propagation analysis is developed to work directly with the output of a contact mechanics stress analysis for fretting fatigue. A series of remote load fatigue tests were conducted on specimens that had previously been subjected to fretting fatigue loading conditions. The growth of these prior fretting induced cracks were monitored and compared to results from the crack propagation analysis. A combined fatigue crack formation and propagation analysis was then applied to other fretting fatigue experiments with good success. The creation of fretting fatigue stress-life curves is also demonstrated. [Copyright &y& Elsevier] AB - Copyright of Engineering Fracture Mechanics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRACTURE mechanics KW - MATERIALS -- Fatigue KW - STRAINS & stresses (Mechanics) KW - STRENGTH of materials KW - Crack growth KW - Fatigue KW - Fretting KW - Life prediction KW - Ti–6Al–4V N1 - Accession Number: 12962719; Golden, P.J. 1; Email Address: patrick.golden@wpafb.af.mil Grandt Jr., A.F. 2; Affiliation: 1: US Air Force Research Laboratory, AFRL/MLLMN, Wright-Patterson AFB, OH 45433, USA 2: School of Aeronautics and Astronautics, 315 N. Grant St., Purdue University, West Lafayette, IN 47907-2023, USA; Source Info: Oct2004, Vol. 71 Issue 15, p2229; Subject Term: FRACTURE mechanics; Subject Term: MATERIALS -- Fatigue; Subject Term: STRAINS & stresses (Mechanics); Subject Term: STRENGTH of materials; Author-Supplied Keyword: Crack growth; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Fretting; Author-Supplied Keyword: Life prediction; Author-Supplied Keyword: Ti–6Al–4V; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.engfracmech.2003.10.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12962719&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sharma, A. K. AU - Zaidi, S. H. AU - Lucero, S. AU - Brueck, S. R. J. AU - Islam, N. E. T1 - Mobility and transverse electric field effects in channel conduction of wrap-around-gate nanowire MOSFETs. JO - IEE Proceedings -- Circuits, Devices & Systems JF - IEE Proceedings -- Circuits, Devices & Systems Y1 - 2004/10// VL - 151 IS - 5 M3 - Article SP - 422 EP - 430 PB - Institution of Engineering & Technology SN - 13502409 AB - In this study, the current conduction process through a nanowire wrap-around-gate, &carat;50nm channel diameter, silicon MOSFET has been investigated and compared with a 2μm wide slab, 200nm thick silicon top-only-gate planar MOSFET with otherwise similar doping profiles, gate length and gate oxide thickness. A significant increase in current density was observed in the nanowire devices compared to the planar devices. A number of parameters such as carrier confinement, effects of parallel and transverse field-dependent mobilities, and carrier scattering due to Coulomb effects, acoustic phonons, impurity doping profile and surface roughness influences the transport process in the channel regions. Experiments also show that the application of the channel potential from three sides in the nanowire structure dramatically improves the subthreshold slope characteristics. KW - NANOWIRES KW - METAL oxide semiconductor field-effect transistors KW - ELECTRIC fields KW - ELECTRON mobility KW - NANOTECHNOLOGY KW - CONDUCTION band N1 - Accession Number: 15310618; Sharma, A. K. 1,2 Zaidi, S. H. 3 Lucero, S. 1 Brueck, S. R. J. 2,4 Islam, N. E. 5; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB NM 87111, USA. 2: Centre for High Technology Materials, University of New Mexico, Albuquerque NM 87106, USA. 3: Gratings Inc., Albuquerque, NM 87109, USA. 4: Department of Physics and Astronomy, University of New Mexico, Albuquerque NM 87106, USA. 5: Department of Electrical and Computer Engineering, University of Missouri, Columbia MO65211, USA.; Source Info: Oct2004, Vol. 151 Issue 5, p422; Subject Term: NANOWIRES; Subject Term: METAL oxide semiconductor field-effect transistors; Subject Term: ELECTRIC fields; Subject Term: ELECTRON mobility; Subject Term: NANOTECHNOLOGY; Subject Term: CONDUCTION band; NAICS/Industry Codes: 541711 Research and Development in Biotechnology; Number of Pages: 9p; Document Type: Article L3 - 10.1049/ip-cds:20040993 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15310618&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - L. Hong AU - S. Wu AU - Layne, J. R. T1 - Invariant-based probabilistic target tracking and identification with GMTI/HRR measurements. JO - IEE Proceedings -- Radar, Sonar & Navigation JF - IEE Proceedings -- Radar, Sonar & Navigation Y1 - 2004/10// VL - 151 IS - 5 M3 - Article SP - 280 EP - 290 PB - Institution of Engineering & Technology SN - 13502395 AB - An invariant-based algorithm is presented for ground moving-target tracking and identification using ground moving-target indicator and high-resolution range measurements. The algorithm effectively exploits coupled information between target kinematics and identification spaces by introducing the concept of local and global motion. A geometrical invariant constraint based on the target rigidity principle is built into target kinematics and measurement models, which facilitate joint information exploitation. An interacting multiple template algorithm is developed to tightly work with a traditional tracker for joint tracking and identification. Besides providing target kinematics behaviour and identity information, the algorithm is capable of reconstructing the prominent physical structure of a moving target. [ABSTRACT FROM AUTHOR] AB - Copyright of IEE Proceedings -- Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - KINEMATICS KW - REMOTE sensing KW - MECHANICAL movements KW - ARTIFICIAL satellite tracking KW - ELECTRONIC surveillance N1 - Accession Number: 15000567; L. Hong 1 S. Wu 1 Layne, J. R. 2; Affiliation: 1: Department of Electrical Engineering, Wright State University, Dayton, OH 45435, USA 2: Target Recognition Branch, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Oct2004, Vol. 151 Issue 5, p280; Subject Term: ALGORITHMS; Subject Term: KINEMATICS; Subject Term: REMOTE sensing; Subject Term: MECHANICAL movements; Subject Term: ARTIFICIAL satellite tracking; Subject Term: ELECTRONIC surveillance; NAICS/Industry Codes: 517910 Other telecommunications; NAICS/Industry Codes: 517919 All Other Telecommunications; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; Number of Pages: 11p; Document Type: Article L3 - 10.1049/ip-rsn:20040858 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15000567&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Leckbee, Joshua J. AU - Curry, Randy D. AU - McDonald, Kenneth F. AU - Cravey, W. Ray AU - Anderson, Glenn AU - Heidger, Susan T1 - Design, Modeling, and Verification of a High-Pressure Liquid Dielectric Switch for Directed Energy Applications. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/10//Oct2004 Part 1 of 2 VL - 32 IS - 5 M3 - Article SP - 1790 EP - 1798 SN - 00933813 AB - A high-power liquid dielectric switch is being developed to satisfy the requirements for future directed energy applications. A flowing, high-pressure liquid dielectric was chosen for the design of a megavolt class switch operating at 100 pps. This paper reports on the design philosophy, modeling, and experimental results of a full size, single-shot prototype 250-300 kV concept validation test (CVT) switch which can transfer kilojoules per. pulse. Analysis of design criteria and scaling for a compact, 100-pps, kilo- joule, high-voltage switch are presented. Optimization studies indicate that a pressure range of 6.9-13.8 MPa(1000-2000 psi) appears to be ideally suited to a flowing dielectric rep-rate switch. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUIDS KW - PROTOTYPES KW - DIELECTRICS KW - EXCITON theory KW - HIGH energy radiotherapy KW - ENGINEERING design KW - Directed energy KW - high pressure KW - high-voltage switch KW - liquid dielectric KW - megawatt switch KW - oil switch KW - rep-rate switch KW - spark gap N1 - Accession Number: 14907310; Leckbee, Joshua J. 1 Curry, Randy D. 1 McDonald, Kenneth F. 1 Cravey, W. Ray 2 Anderson, Glenn 3 Heidger, Susan 4; Affiliation: 1: Department of Electrical Engineering, University of Missouri--Columbia, Columbia, MO 65211 USA. 2: Alpha-Omega Power Technologies, Albuquerque, NM 87109 USA. 3: Boeing Company, St. Louis, MO 63166 USA. 4: Air Force Research Laboratory, AFRLJPRPE, Wright Patterson Air Force Base, OH 45433 USA.; Source Info: Oct2004 Part 1 of 2, Vol. 32 Issue 5, p1790; Subject Term: FLUIDS; Subject Term: PROTOTYPES; Subject Term: DIELECTRICS; Subject Term: EXCITON theory; Subject Term: HIGH energy radiotherapy; Subject Term: ENGINEERING design; Author-Supplied Keyword: Directed energy; Author-Supplied Keyword: high pressure; Author-Supplied Keyword: high-voltage switch; Author-Supplied Keyword: liquid dielectric; Author-Supplied Keyword: megawatt switch; Author-Supplied Keyword: oil switch; Author-Supplied Keyword: rep-rate switch; Author-Supplied Keyword: spark gap; NAICS/Industry Codes: 541330 Engineering Services; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TPS.2004.835955 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14907310&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baker, D.N. AU - Weigel, R.S. AU - Rigler, E.J. AU - McPherron, R.L. AU - Vassiliadis, D. AU - Arge, C.N. AU - Siscoe, G.L. AU - Spence, H.E. T1 - Sun-to-magnetosphere modeling: CISM forecast model development using linked empirical methods JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2004/10// VL - 66 IS - 15/16 M3 - Article SP - 1491 EP - 1497 SN - 13646826 AB - Abstract: The Wang–Sheeley–Arge (WSA) method is used to predict the solar wind speed (and certain other parameters) near the Earth''s orbit based upon solar surface measurements. This approach gives a predicted solar wind time series with a lead time of three to four days. Such forecasted solar wind conditions can then be convolved with linear and nonlinear filters in order to provide a predicted set of geomagnetic indices or various particle flux estimates. In order to illustrate the method in a concrete way, we present here a demonstration of an end-to-end empirical forecast of relativistic electrons in the outer Van Allen radiation belt. Past work has shown that radiation belt electron fluxes are highly dependent on the speed of the solar wind striking the magnetosphere. We develop filters that predict electron fluxes using the WSA estimates of solar wind speed at L1, which allows for 3–4 days lead times. We compare the prediction efficiency (PE) provided by these filters with filters developed to use 3–4 day old values of the solar wind velocity measured at L1 and 3–4 day old values of the measured electron fluxes themselves. It is found that the WSA method provides PEs of the electron flux that are slightly lower than that provided by using old L1 or the autocorrelated electron flux data. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE environment KW - EXTREME environments KW - RADIATION belts KW - ASTROPHYSICAL radiation KW - Energetic electrons KW - Forecast models KW - Radiation belts KW - Space weather N1 - Accession Number: 19303369; Baker, D.N. 1; Email Address: daniel.baker@lasp.colorado.edu Weigel, R.S. 1 Rigler, E.J. 1 McPherron, R.L. 2 Vassiliadis, D. 3 Arge, C.N. 4 Siscoe, G.L. 5 Spence, H.E. 5; Affiliation: 1: Laboratory for Atmospheric and Space Physics, University of Colorado at Boulder, CO, USA 2: IGPP/University of California at Los Angeles, USA 3: USRA/NASA Goddard SFC, USA 4: Air Force Research Laboratory, Hanscom AFB, MA, USA 5: Boston University, Boston, MA, USA; Source Info: Oct2004, Vol. 66 Issue 15/16, p1491; Subject Term: SPACE environment; Subject Term: EXTREME environments; Subject Term: RADIATION belts; Subject Term: ASTROPHYSICAL radiation; Author-Supplied Keyword: Energetic electrons; Author-Supplied Keyword: Forecast models; Author-Supplied Keyword: Radiation belts; Author-Supplied Keyword: Space weather; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jastp.2004.04.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19303369&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jackson, T. A. AU - Eklund, D. R. AU - Fink, A. J. T1 - High speed propulsion: Performance advantage of advanced materials. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2004/10// VL - 39 IS - 19 M3 - Article SP - 5905 EP - 5913 PB - Springer Science & Business Media B.V. SN - 00222461 AB - High-speed air breathing propulsion systems have many attractive military and civil applications. The high propulsive efficiency of these systems allows the exploitation of speed, distance, and bigger payloads, or any combination of the three. The severe operating conditions of these systems require particular attention to overall thermal management of the engine/air-frame. Fuel-cooling the engine structure is a viable way of maintaining thermal balance over a range of flight conditions. Air Force applications have focused on using endothermic hydrocarbon fuels to address this issue because of their compatibility with the military operations. Recent ground tests of scramjet engines have demonstrated adequate performance utilizing state-of-the-art technology in materials. This progress has paved the way for an expendable flight test vehicle in the near future. In order to take full advantage of the capabilities of this propulsion system, advances in fuel-cooled structures, high temperature un-cooled materials, and increased heat capacity of hydrocarbon fuels will be needed to enable expendable systems to reach higher Mach numbers. An additional benefit would be realized in future reusable systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROPULSION systems KW - ENGINEERING systems KW - ORGANIC compounds KW - MILITARY operations other than war KW - HYDROCARBONS KW - MATERIALS science N1 - Accession Number: 14426335; Jackson, T. A. 1; Email Address: thomas.jackson@wpafb.af.mil Eklund, D. R. 2 Fink, A. J. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA. 2: Air Force Research Laboratory, Wright-Patterson AFB, OH, USA; Source Info: Oct2004, Vol. 39 Issue 19, p5905; Subject Term: PROPULSION systems; Subject Term: ENGINEERING systems; Subject Term: ORGANIC compounds; Subject Term: MILITARY operations other than war; Subject Term: HYDROCARBONS; Subject Term: MATERIALS science; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14426335&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dickerson, M. B. AU - Wurm, P. J. AU - Schorr, J. R. AU - Hoffman, W. P. AU - Wapner, P. G. AU - Sandhage, K. H. T1 - Near net-shape, ultra-high melting, recession-resistant ZrC/W-based rocket nozzle liners via the displacive compensation of porosity (DCP) method. JO - Journal of Materials Science JF - Journal of Materials Science Y1 - 2004/10// VL - 39 IS - 19 M3 - Article SP - 6005 EP - 6015 PB - Springer Science & Business Media B.V. SN - 00222461 AB - Dense, near net-shaped ZrC/W-based composites have been fabricated at modest temperatures and at ambient pressure by a reactive infiltration process known as the Displacive Compensation of Porosity (DCP) method. Porous WC preforms with hourglass shapes (for rocket nozzle liners) were produced by gel casting, whereas simple bar-shaped preforms were produced by uniaxial pressing. The porous preforms were exposed to molten Zr2Cu at 1200–1300°C and ambient pressure. The Zr2Cu liquid rapidly infiltrated into the preforms and underwent a displacement reaction with the WC to yield a more voluminous mixture of solid products, ZrC and W. This displacement reaction-induced increase in internal solid volume filled the prior pore spaces of the preforms (“displacive compensation of porosity”) to yield dense, ZrC/W-based composites. Because the preforms remained rigid during reactive infiltration, the final composites retained the external shapes and dimensions of the starting preforms. A DCP-derived, ZrC/W-based nozzle insert was found to be resistant to the severe thermal shock and erosive conditions of a Pi-K rocket motor test. The DCP process enables dense, ceramic/refractory metal composites to be fabricated in complex and near net shapes without the need for high-temperature or high-pressure densification or for extensive machining (i.e., relatively expensive processing steps are avoided). [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Materials Science is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ROCKETS (Aeronautics) -- Nozzles KW - POROSITY KW - ADSORPTION KW - OSMOSIS KW - SUBSTITUTION reactions KW - MATERIALS science N1 - Accession Number: 14426325; Dickerson, M. B. 1 Wurm, P. J. 2 Schorr, J. R. 2 Hoffman, W. P. 3 Wapner, P. G. 4 Sandhage, K. H. 5; Email Address: ken.sandhage@mse.gatech.edu; Affiliation: 1: School of Materials Science & Engineering, 771 Ferst Drive, Georgia Institute of Technology, Atlanta, GA 30332, USA 2: MetaMateria Partners, LLC, 1275 Kinnear Road, Columbus, OH 43212, USA 3: Air Force Research Laboratory, Edwards Air Force Base, CA 93524, USA 4: ERC Inc., Air Force Research Laboratory, Edwards, CA 93523, USA 5: School of Materials Science & Engineering, 771 Ferst Drive, Georgia Institute of Technology, Atlanta, GA 30332, USA.; Source Info: Oct2004, Vol. 39 Issue 19, p6005; Subject Term: ROCKETS (Aeronautics) -- Nozzles; Subject Term: POROSITY; Subject Term: ADSORPTION; Subject Term: OSMOSIS; Subject Term: SUBSTITUTION reactions; Subject Term: MATERIALS science; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14426325&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brungart, Douglas S. AU - Kordik, Alexander J. AU - Simpson, Brian D. T1 - The effects of single and double hearing protection on the localization and segregation of spatially-separated speech signals (L). JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2004/10// VL - 116 IS - 4 M3 - Article SP - 1897 EP - 1900 SN - 00014966 AB - Recent results have shown that auditory localization in the horizontal plane is dramatically worse for listeners wearing double hearing protection (earplugs and earmuffs) than it is for listeners wearing single hearing protection (earplugs or earmuffs alone). This suggests that double hearing protection might also impair the spatial unmasking that normally occurs when two simultaneous talkers are spatially separated in azimuth (the so-called "cocktail party" effect). In this experiment, normal hearing listeners wearing no hearing protection, single hearing protection (earmuffs), or double hearing protection were asked to perform a speech intelligibility task that required them to segregate two simultaneous talkers who were either presented from the same loudspeaker or spatially separated by 90° in azimuth. The listeners were also asked to determine the location of the target talker in each trial. The results show that the listeners were unable to reliably determine the location of the target talker when they wore double hearing protection, but that they were still able to benefit from the spatial separation of the competing talkers. This suggests that the use of double hearing protection causes spatially separated sound sources to be heard at locations that are inaccurate but still distinct enough to enhance the segregation of speech. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOUND -- Equipment & supplies KW - DIRECTIONAL hearing KW - HEARING KW - SPEECH KW - AZIMUTH N1 - Accession Number: 20839709; Brungart, Douglas S. 1 Kordik, Alexander J. 2 Simpson, Brian D. 1; Affiliation: 1: Air Force Research Laboratory, WPAFB, Ohio 2: Sytronics, Dayton, Ohio; Source Info: Oct2004, Vol. 116 Issue 4, p1897; Subject Term: SOUND -- Equipment & supplies; Subject Term: DIRECTIONAL hearing; Subject Term: HEARING; Subject Term: SPEECH; Subject Term: AZIMUTH; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; Number of Pages: 4p; Illustrations: 1 Graph; Document Type: Article L3 - 10.1121/1.1786812 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20839709&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boakye, Emmanuel E. AU - Hay, Randall S. AU - Petry, M. Dennis AU - Parthasarathy, Triplicane A. T1 - Zirconia-Silica-Carbon Coatings on Ceramic Fibers. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2004/10// VL - 87 IS - 10 M3 - Article SP - 1967 EP - 1976 PB - Wiley-Blackwell SN - 00027820 AB - Precursors for zircon-carbon mixtures were made to coat fibers for ceramic-matrix composites. Precursors were characterized using XRD, TGA, and DTA. Zircon formed from vanadium- or lithium-doped precursors after heat treatments at ≥ 900°C in air, but it did not form at 1200°-1400°C in argon when large amounts of carbon were added. Some precursors were used to coat Nextel™ 720 and Hi-Nicalon™ fibers. The coatings were characterized using SEM and TEM, and coated-fiber tensile strengths were measured. Although zircon formed in powders, only tetragonal-zirconia-silica mixed phases formed in fiber coatings at 1200°C in air. Loss of vanadium oxide flux to the fibers may have caused the lack of conversion to zircon. The strengths of the coated fibers were severely degraded after heat treatment at ≥1000°C in air, but not in argon. The coated fibers were compared with zirconia--carbon-coated fibers made using similar methods. Mechanisms for fiber strength degradation are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CERAMIC fibers KW - SURFACE coatings KW - ZIRCONIUM oxide KW - SILICA KW - CARBON KW - COMPOSITE materials N1 - Accession Number: 14776278; Boakye, Emmanuel E. 1,2,3 Hay, Randall S. 1,3 Petry, M. Dennis 2 Parthasarathy, Triplicane A. 1,2; Affiliation: 1: Member, American Ceramic Society. 2: UES, Inc., Dayton, Ohio 45432. 3: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433.; Source Info: Oct2004, Vol. 87 Issue 10, p1967; Subject Term: CERAMIC fibers; Subject Term: SURFACE coatings; Subject Term: ZIRCONIUM oxide; Subject Term: SILICA; Subject Term: CARBON; Subject Term: COMPOSITE materials; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 327999 All Other Miscellaneous Nonmetallic Mineral Product Manufacturing; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14776278&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Kwang-Sup AU - Kim, Moon-Soo AU - Yang, Hyun-Kwan AU - Soo, Bong-Keun AU - Sun, Hong-Bo AU - Kawata, Satoshi AU - Fleitz, Paul T1 - LITHOGRAPHIC MICROFABRICATION BY USING TWO-PHOTON ABSORBING PHENYLENEVINYLENE DERIVATIVE. JO - Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Y1 - 2004/10// VL - 424 IS - 1 M3 - Article SP - 35 EP - 41 SN - 15421406 AB - The phenylenevinylene-based two-photon absorbing chromophore(EA4BPA-VB)with a triphenyl amine as an electron donor was synthesized. The two-photon absorption(TPA)cross-section values of EA4BPA-VB measured by two-photon-induced fluorescence method with 80 fs-pulse laser were found to beσ 2   =  4.7  ×  10 -48   cm 4 s/photon. By adding this chromophore into photo-reactive SCR resin, we have successfully fabricated 3-D micro-structure(a larva)with high spatial resolution at low laser power with less than 5  mW. To improve the resolution of 3-D patternings, we also investigated a voxel size and shape depending on laser exposure time and concentration of TPA chromophore in SCR resin at near-threshold exposure condition. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROFABRICATION KW - LITHOGRAPHY KW - PHOTOPOLYMERIZATION KW - ABSORPTION KW - AMINES KW - LASERS KW - lithographic microfabrication KW - photopolymerization KW - photopolymerization, two-photon absorption KW - two-photon absorption N1 - Accession Number: 15645132; Lee, Kwang-Sup 1; Email Address: kslee@mail.hannam.ac.kr Kim, Moon-Soo 1 Yang, Hyun-Kwan 1 Soo, Bong-Keun 1 Sun, Hong-Bo 2 Kawata, Satoshi 2 Fleitz, Paul 3; Affiliation: 1: Department of Polymer and Engineering, Hannam University, Daejeon, Korea 2: Department of Applied Physics, Osaka University, Suita, Osaka, Japan 3: Materials and Manufacturing Directorate, US Air Force Research Laboratory, OH, USA; Source Info: 2004, Vol. 424 Issue 1, p35; Subject Term: MICROFABRICATION; Subject Term: LITHOGRAPHY; Subject Term: PHOTOPOLYMERIZATION; Subject Term: ABSORPTION; Subject Term: AMINES; Subject Term: LASERS; Author-Supplied Keyword: lithographic microfabrication; Author-Supplied Keyword: photopolymerization; Author-Supplied Keyword: photopolymerization, two-photon absorption; Author-Supplied Keyword: two-photon absorption; NAICS/Industry Codes: 323119 Other printing; Number of Pages: 7p; Document Type: Article L3 - 10.1080/15421400490505857 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15645132&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miracle, Daniel B. T1 - A structural model for metallic glasses. JO - Nature Materials JF - Nature Materials Y1 - 2004/10// VL - 3 IS - 10 M3 - Article SP - 697 EP - 702 SN - 14761122 AB - Despite the intense interest in metallic glasses for a variety of engineering applications, many details of their structure remain a mystery. Here, we present the first compelling atomic structural model for metallic glasses. This structural model is based on a new sphere-packing scheme—the dense packing of atomic clusters. Random positioning of solvent atoms and medium-range atomic order of solute atoms are combined to reproduce diffraction data successfully over radial distances up to ∼1 nm. Although metallic glasses can have any number of chemically distinct solute species, this model shows that they contain no more than three topologically distinct solutes and that these solutes have specific and predictable sizes relative to the solvent atoms. Finally, this model includes defects that provide richness to the structural description of metallic glasses. The model accurately predicts the number of solute atoms in the first coordination shell of a typical solvent atom, and provides a remarkable ability to predict metallic-glass compositions accurately for a wide range of simple and complex alloys. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature Materials is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC glasses KW - AMORPHOUS substances KW - ATOMIC models KW - CHEMICAL models KW - ATOMS KW - MATTER -- Constitution N1 - Accession Number: 18445612; Miracle, Daniel B. 1; Email Address: Daniel.miracle@wpafb.af.mil; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: Oct2004, Vol. 3 Issue 10, p697; Subject Term: METALLIC glasses; Subject Term: AMORPHOUS substances; Subject Term: ATOMIC models; Subject Term: CHEMICAL models; Subject Term: ATOMS; Subject Term: MATTER -- Constitution; Number of Pages: 6p; Illustrations: 1 Color Photograph, 3 Graphs; Document Type: Article L3 - 10.1038/nmat1219 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18445612&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schulte, Melanie J. AU - Ree, Malcolm James AU - Carretta, Thomas R. T1 - Emotional intelligence: not much more than g and personality JO - Personality & Individual Differences JF - Personality & Individual Differences Y1 - 2004/10// VL - 37 IS - 5 M3 - Article SP - 1059 EP - 1068 SN - 01918869 AB - Cognitive ability and personality have long played central roles in the investigation of determinants of human performance. Recently, the construct of emotional intelligence (EI) has emerged in the popular literature as an additional explanatory concept for human behavior and performance. The ability conceptualization of EI proposed by Mayer, Salovey, and their colleagues involves the perception, assimilation, comprehension, and management of emotions. Its proponents consider it to be distinct from either general cognitive ability (g) or personality. The purpose of this study was to investigate the construct validity of EI by examining its relations to g and the Big Five personality dimensions of Neuroticism, Extraversion, Openness to Experience, Agreeableness, and Conscientiousness. The observed correlation between scores on the Wonderlic Personnel Test (a measure of g) and EI was r=0.454. A regression model that included three predictors representing g, the Big Five dimension of Agreeableness, and sex showed an R of 0.617. After correction for unreliability the multiple correlation became 0.806, showing a strong relationship. Based on these results, we question the uniqueness of EI as a construct and conclude that its potential for advancing our understanding of human performance may be limited. Implications and suggestions for future studies are discussed. [Copyright &y& Elsevier] AB - Copyright of Personality & Individual Differences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REGRESSION analysis KW - PSYCHOLOGY KW - EMOTIONAL intelligence KW - HUMAN behavior KW - Big Five KW - Cognitive ability KW - Construct validity KW - Emotional intelligence KW - Intelligence KW - Personality N1 - Accession Number: 14034705; Schulte, Melanie J. 1 Ree, Malcolm James 1; Email Address: reemal@lake.ollusa.edu Carretta, Thomas R. 2; Affiliation: 1: Our Lady of the Lake University, 411 S.W. 24th Street, San Antonio, TX 78207-4689, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7511, USA; Source Info: Oct2004, Vol. 37 Issue 5, p1059; Subject Term: REGRESSION analysis; Subject Term: PSYCHOLOGY; Subject Term: EMOTIONAL intelligence; Subject Term: HUMAN behavior; Author-Supplied Keyword: Big Five; Author-Supplied Keyword: Cognitive ability; Author-Supplied Keyword: Construct validity; Author-Supplied Keyword: Emotional intelligence; Author-Supplied Keyword: Intelligence; Author-Supplied Keyword: Personality; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.paid.2003.11.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14034705&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Albert, Jay M. T1 - Analytical bounds on the whistler mode refractive index. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2004/10// VL - 11 IS - 10 M3 - Article SP - 4875 EP - 4877 PB - American Institute of Physics SN - 1070664X AB - The refractive index μ for whistler mode plane waves in a magnetized electron–proton plasma is considered as a function of normalized wave frequency ω/Ωe at fixed density and angle of propagation. A factorization into an increasing function of frequency times a decreasing function of frequency is found, valid for any value of ωpe/Ωe, for ω between (ΩeΩi)1/2 and the smaller of Ωe and ωpe. This leads to lower and upper bounds on μ2 over any given frequency subinterval. The bounds can be directly applied to a quasilinear formulation of velocity-space diffusion of electrons in the Earth’s radiation belts, in a generalization of previously developed techniques to low density conditions found outside the plasma pause. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REFRACTIVE index KW - PLASMA (Ionized gases) KW - ELECTRONS KW - PROTONS KW - ELECTRONS -- Diffusion KW - PLASMA density N1 - Accession Number: 14688843; Albert, Jay M. 1; Email Address: jay.albert@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory/VSBX, Hanscom AFB, Massachusetts 01731; Source Info: Oct2004, Vol. 11 Issue 10, p4875; Subject Term: REFRACTIVE index; Subject Term: PLASMA (Ionized gases); Subject Term: ELECTRONS; Subject Term: PROTONS; Subject Term: ELECTRONS -- Diffusion; Subject Term: PLASMA density; Number of Pages: 3p; Document Type: Article L3 - 10.1063/1.1792634 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14688843&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, Martin L. T1 - WHETHER (MODERN, AMERICAN) SOLDIERS, TOO, CAN BE SAVED? CHRISTIAN LOYALTY AND SERVICE IN THE AMERICAN ARMED FORCES. JO - Political Theology JF - Political Theology Y1 - 2004/10// VL - 5 IS - 4 M3 - Article SP - 431 EP - 445 PB - Taylor & Francis Ltd SN - 1462317X AB - Little has been written in recent Christian ethics regarding the moral basis of the voluntary military service of Christian individuals. This article identifies some sources of that lack of discussion. Furthermore, it explores the moral basis of voluntary military service, especially in the modern United States' military. This is critical because service in the US military is not, in many respects, simply equivalent to generic military service. This is due to the unique and historically unprecedented military superiority of the United States in the world-its 'sole remaining superpower' status. This status places unique political responsibility and obligations on the military forces of the United States in the twenty-first century global community. The article attempts to articulate a moral argument in support of the voluntary military service of thoughtful Christian individuals in the US military in this geopolitical environment. [ABSTRACT FROM AUTHOR] AB - Copyright of Political Theology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VOLUNTARY military service -- United States KW - CHRISTIAN ethics KW - CHRISTIANS KW - ARMED Forces KW - CHRISTIAN life KW - UNITED States N1 - Accession Number: 14497143; Cook, Martin L. 1; Email Address: martin.cook@usafa.af.mil; Affiliation: 1: Professor of Philosophy and Deputy Department Head, United States Air Force Academy, 2354 Fairchild Dr., CO 80840, USA; Source Info: Oct2004, Vol. 5 Issue 4, p431; Subject Term: VOLUNTARY military service -- United States; Subject Term: CHRISTIAN ethics; Subject Term: CHRISTIANS; Subject Term: ARMED Forces; Subject Term: CHRISTIAN life; Subject Term: UNITED States; Number of Pages: 15p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14497143&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Altrock, Richard T1 - The Temperature of the Low Corona During Solar Cycles 21-23. JO - Solar Physics JF - Solar Physics Y1 - 2004/10// VL - 224 IS - 1/2 M3 - Article SP - 255 EP - 268 PB - Springer Science & Business Media B.V. SN - 00380938 AB - Observations of the forbidden coronal lines Fexiv530.3 nm and Fex637.4 nm obtained at the National Solar Observatory at Sacramento Peak are used to determine the variation of coronal temperature at latitudes above 30° during solar activity cycles 21-23. Features of the long-term variation of emission in the two lines are also discussed. Temperatures at latitudes below 30° are not studied because the technique used to determine the coronal temperature is not applicable in active regions. The polar temperature varies cyclically from approximately 1.3 to 1.7 MK. The temperatures are similar in both hemispheres. The temperature near solar minimum decreases strongly from mid-latitudes to the poles. The temperature of the corona above 80° latitude generally follows the sunspot cycle, with minima in 1985 and 1995-1996 (cf. 1986 and 1996 for the smoothed sunspot number,Rz) and maxima in 1989 and 2000 (cf. 1989 and 2000 forRz). The temperature of the corona above 30° latitude at solar maximum is nearly uniform, i.e., there is little latitude dependence. If the maximum temperatures of cycles 22 and 23 are aligned in time (superposed epochs), the average annual N + S temperature (average of the northern and southern hemisphere) in cycle 23 is hotter than that in cycle 22 at all times both above 80° latitude and above 30° latitude. The difference in the average annual N + S maximum temperature between cycles 23 and 22 was 56 kK near the poles and 64 kK for all latitudes above 30°. Cycle 23 was also hotter at mid-latitudes than cycle 22 by 60 kK. The last 3 years of cycle 21 were hotter than the last 3 years of cycle 22. The difference in average annual N + S temperatures at the end of cycles 21 and 22 was 32 kK near the poles and 23 kK for all latitudes above 30°. Cycle 21 was also hotter at mid-latitudes than cycle 22 by at least 90 kK. Thus, there does not seem to be a solar-cycle trend in the low-coronal temperature outside of active regions. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR corona KW - SOLAR cycle KW - SOLAR atmosphere KW - SUN -- Temperature KW - SOLAR activity KW - SOLAR radiation N1 - Accession Number: 16904932; Altrock, Richard 1; Email Address: altrock@nso.edu; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, National Solar Observatory, Sacramento Peak, P.O. Box 62, Sunspot, NM 88349-0062, U.S.A.; Source Info: Oct2004, Vol. 224 Issue 1/2, p255; Subject Term: SOLAR corona; Subject Term: SOLAR cycle; Subject Term: SOLAR atmosphere; Subject Term: SUN -- Temperature; Subject Term: SOLAR activity; Subject Term: SOLAR radiation; Number of Pages: 14p; Document Type: Article L3 - 10.1007/s11207-005-6502-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16904932&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cliver, E. W. AU - Svalgaard, L. T1 - The 1859 Solar-Terrestrial Disturbance And the Current Limits of Extreme Space Weather Activity. JO - Solar Physics JF - Solar Physics Y1 - 2004/10// VL - 224 IS - 1/2 M3 - Article SP - 407 EP - 422 PB - Springer Science & Business Media B.V. SN - 00380938 AB - It is generally appreciated that the September 1859 solar-terrestrial disturbance, the first recognized space weather event, was exceptionally large. How large and how exceptional? To answer these questions, we compiled rank order lists of the various measures of solar-induced disturbance for events from 1859 to the present. The parameters considered included: magnetic crochet amplitude, solar energetic proton fluence (McCrackenet al., 2001a), Sun-Earth disturbance transit time, geomagnetic storm intensity, and low-latitude auroral extent. While the 1859 event has close rivals or superiors in each of the above categories of space weather activity, it is the only documented event of the last ~150 years that appears at or near the top of all of the lists. Taken together, the top-ranking events in each of the disturbance categories comprise a set of benchmarks for extreme space weather activity. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE environment KW - WEATHER KW - MAGNETICS KW - PROTONS KW - METEOROLOGY KW - MAGNETISM N1 - Accession Number: 16904904; Cliver, E. W. 1; Email Address: edward.cliver@hanscom.af.mil Svalgaard, L. 2; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01 731-3010, U.S.A. 2: Solar-Terrestrial Environment Laboratory, Nagoya University, Honohara 3-13, Toyokawa, Aichi 442, Japan.; Source Info: Oct2004, Vol. 224 Issue 1/2, p407; Subject Term: SPACE environment; Subject Term: WEATHER; Subject Term: MAGNETICS; Subject Term: PROTONS; Subject Term: METEOROLOGY; Subject Term: MAGNETISM; Number of Pages: 16p; Document Type: Article L3 - 10.1007/s11207-005-4980-z UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16904904&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Knipp, D. J. AU - Tobiska, W. K. AU - Emery, B. A. T1 - Direct and Indirect Thermospheric Heating Sources for Solar Cycles 21-23. JO - Solar Physics JF - Solar Physics Y1 - 2004/10// VL - 224 IS - 1/2 M3 - Article SP - 495 EP - 505 PB - Springer Science & Business Media B.V. SN - 00380938 AB - Solar variability is often cast in terms of radiative emission and the associated long-term climate response; however, growing societal reliance on technology is creating more interest inday-to-daysolar variability. This variability is associated with both solar radiative and solar wind emissions. In this paper we explore the combined effects of radiative and solar wind fluctuations at Earth. The fluctuations in radiative and geomagnetic power create an extended interval of solar maximum for the upper atmosphere. We use a trio of empirical models to estimate, over the last three solar cycles, the relative contributions of solar extreme ultraviolet (UV) power, Joule power, and particle kinetic power to the Earth’s upper atmosphere energy budget. Daily power values are derived from three source models. The SOLAR2000 solar irradiance specification model provides estimates of the daily extreme and far UV solar power input. Geomagnetic power is derived from a combination of satellite-estimated particle precipitation power and an empirical model of Joule power from hemispherically integrated estimates of high-latitude energy deposition. During the interval 1975 to 2003, the average daily contributions were: particles - 36 GW, Joule - 95 GW and solar - 464 GW for a total of 595 GW. Solar wind-driven geomagnetic power provided 22% of the total global upper atmospheric energy. In the top 15 power events, geomagnetic power contributed two-thirds of the total power budget. In each of these events, Joule power alone exceeded solar power. With rising activity, Joule power becomes the most variable element of solar upper atmosphere interactions. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOSPHERIC winds KW - SOLAR corona KW - SOLAR activity KW - SOLAR cycle KW - SPACE environment KW - SOLAR radiation N1 - Accession Number: 16904927; Knipp, D. J. 1; Email Address: delores.knipp@usafa.af.mil Tobiska, W. K. 2; Email Address: ktobiska@spacenvironment.net Emery, B. A. 3; Email Address: emery@ucar.edu; Affiliation: 1: Department of Physics, US Air Force Academy, CO 80840, USA. 2: Space Environment Technologies, Pacific Palisades, CA 90272, USA. 3: High Altitude Observatory, NCAR, Boulder, CO 80301, USA.; Source Info: Oct2004, Vol. 224 Issue 1/2, p495; Subject Term: THERMOSPHERIC winds; Subject Term: SOLAR corona; Subject Term: SOLAR activity; Subject Term: SOLAR cycle; Subject Term: SPACE environment; Subject Term: SOLAR radiation; Number of Pages: 11p; Document Type: Article L3 - 10.1007/s11207-005-6393-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16904927&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mitchel, W.C. AU - Mitchell, William D. AU - Zvanut, M.E. AU - Landis, G. T1 - High temperature Hall effect measurements of semi-insulating 4H–SiC substrates JO - Solid-State Electronics JF - Solid-State Electronics Y1 - 2004/10// VL - 48 IS - 10/11 M3 - Article SP - 1693 EP - 1697 SN - 00381101 AB - High temperature Hall effect and resistivity measurements have been made on semi-insulating 4H–SiC samples. Both vanadium doped and undoped materials have been studied. Resistivity measurements before and after annealing up to 1800 °C are also reported. The thermal activation energy of the resistivity in vanadium doped samples has one of two values, 1.5 and 1.1 eV, due, respectively, to the vanadium donor level and an as yet unidentified defect. The activation energies for high purity semi-insulating material (HPSI) varied from 0.9 to 1.5 eV. Hall effect measurements were made on several HPSI and 1.1 eV V-doped samples. In all cases the material was found to be n-type. Mixed conduction analysis of the data suggests that the hole concentration is negligible in all samples studied. This suggests that the defects responsible for the semi-insulating properties have deep levels located in the upper half of the bandgap. The resistivity of V-doped samples were unaffected by anneals up to 1800 °C. The annealing results for HPSI samples were mixed. [Copyright &y& Elsevier] AB - Copyright of Solid-State Electronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INSULATING materials KW - HALL effect KW - CHROMOGENIC compounds KW - HEAT conduction KW - Deep levels KW - Hall effect KW - Semi-insulating SiC N1 - Accession Number: 13854993; Mitchel, W.C. 1; Email Address: william.mitchel@wpafb.af.mil Mitchell, William D. 1 Zvanut, M.E. 2 Landis, G. 1,3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLPS, 3005 Hobson Way, Room 243, Wright-Patterson AFB, OH 45433-7707, USA 2: Department of Physics, University of Alabama, Birmingham, Birmingham, AL, USA 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA; Source Info: Oct2004, Vol. 48 Issue 10/11, p1693; Subject Term: INSULATING materials; Subject Term: HALL effect; Subject Term: CHROMOGENIC compounds; Subject Term: HEAT conduction; Author-Supplied Keyword: Deep levels; Author-Supplied Keyword: Hall effect; Author-Supplied Keyword: Semi-insulating SiC; NAICS/Industry Codes: 238310 Drywall and Insulation Contractors; NAICS/Industry Codes: 326290 Other rubber product manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.sse.2004.02.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13854993&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Webster, Richard T. AU - Anwar, A.F.M. T1 - Noise in Metamorphic AlGaAsSb/InGaAs/AlGaAsSb HEMTs JO - Solid-State Electronics JF - Solid-State Electronics Y1 - 2004/10// VL - 48 IS - 10/11 M3 - Article SP - 2007 EP - 2011 SN - 00381101 AB - We report the first measurement of minimum noise figure in lattice matched 0.15 μm × 64 μm AlGaAsSb/In0.8Ga0.2As/AlGaAsSb metamorphic HEMTs (MHEMTs). A minimum noise figure of 0.82 dB is obtained at 15 GHz for applied gate and drain bias of -0.2 and 0.5 V, respectively increasing to 1.4 dB at 26 GHz. The devices show an unusual increase in minimum noise figure for frequencies below 10 GHz which may be attributed to an increase in the gate parasitic capacitance. [Copyright &y& Elsevier] AB - Copyright of Solid-State Electronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NOISE KW - MEASUREMENT KW - CAPACITANCE meters KW - ELECTRIC capacity N1 - Accession Number: 13855129; Webster, Richard T. 1 Anwar, A.F.M. 1,2; Affiliation: 1: Air Force Research Laboratory, SNHA, 80 Scott Dr, Hanscom AFB, Hanscom, MA 01731-2909, USA 2: ECE Department, 371 Fairfield Road, University of Connecticut, Storrs, CT 06269-1157, USA; Source Info: Oct2004, Vol. 48 Issue 10/11, p2007; Subject Term: NOISE; Subject Term: MEASUREMENT; Subject Term: CAPACITANCE meters; Subject Term: ELECTRIC capacity; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.sse.2004.05.080 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13855129&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gardner, Jennifer L. AU - Miller, Steven M. T1 - B2A′-X2A′ detection of vibrationally excited HCO produced by the O(3P)+C2H4 reaction. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2004/09/22/ VL - 121 IS - 12 M3 - Article SP - 5920 EP - 5928 PB - American Institute of Physics SN - 00219606 AB - The distribution of rotational and vibrational energy in HCO produced by the O(3P)+C2H4 reaction has been measured using laser-induced fluorescence detection via the B2A′-X2A′ transition. Over a detection wavelength range of 248–290 nm, our experiments have shown that HCO is formed in both the ground state and in at least six vibrationally excited states with up to two quanta of energy in the C-O stretch and the bending mode. Dispersed fluorescence experiments were conducted to positively assign all of the HCO vibrational bands. The experiments confirmed that many bands, including the B(000)-X(000) band, are affected by overlap with other HCO bands. Spectral modeling was used to separate the contributions of overlapping HCO B-X bands and to determine a nascent HCO rotational temperature of ∼600 K, corresponding to ∼6% of the total energy from the O(3P)+C2H4 reaction. HCO vibrational distributions were determined for two different average collision energies and were fit with vibrational temperatures of 1850±80 K and 2000±100 K, corresponding to ∼15% of the total energy. The observed Boltzmann distribution of vibrational energy in HCO indicates that HCO and CH3 are formed by the dissociation of an energized intermediate complex. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VIBRATIONAL spectra KW - MOLECULAR spectroscopy KW - TEMPERATURE KW - THERMAL properties KW - MAXWELL-Boltzmann distribution law KW - KINETIC theory of gases KW - DISTRIBUTION (Probability theory) N1 - Accession Number: 14402033; Gardner, Jennifer L. 1 Miller, Steven M. 2; Affiliation: 1: Stewart Radiance Laboratory, Bedford, Massachusetts 01730 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts 01731-3010; Source Info: 9/22/2004, Vol. 121 Issue 12, p5920; Subject Term: VIBRATIONAL spectra; Subject Term: MOLECULAR spectroscopy; Subject Term: TEMPERATURE; Subject Term: THERMAL properties; Subject Term: MAXWELL-Boltzmann distribution law; Subject Term: KINETIC theory of gases; Subject Term: DISTRIBUTION (Probability theory); Number of Pages: 9p; Illustrations: 1 Diagram, 3 Charts, 6 Graphs; Document Type: Article L3 - 10.1063/1.1774984 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14402033&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coutu Jr., R.A. AU - Kladitis, P.E. AU - Starman, L.A. AU - Reid, J.R. T1 - A comparison of micro-switch analytic, finite element, and experimental results JO - Sensors & Actuators A: Physical JF - Sensors & Actuators A: Physical Y1 - 2004/09/21/ VL - 115 IS - 2/3 M3 - Article SP - 252 EP - 258 SN - 09244247 AB - Electrostatically actuated, metal contact, micro-switches depend on having adequate contact force to achieve desired, low contact resistance. In this study, higher contact forces resulted from overdriving cantilever beam style switches, after pull-in or initial contact, until the beam collapsed onto the drive or actuation electrode. The difference between initial contact and beam collapse was defined as the useful contact force range. Micro-switch pull-in voltage, collapse voltage, and contact force predictions, modeled analytically and with the CoventorWare finite element software package, were compared to experimental results. Contact resistance was modeled analytically using Maxwellian spreading resistance theory. Contact resistance and contact force were further investigated by varying the width of the drive electrode. A minimum contact resistance of 0.26 Ω was measured on micro-switches with 150 μm-wide drive electrodes. The useful contact force range for these devices was between 22.7 and 58.3 V. Contributions of this work include: a contact force equation useful for initial micro-switch designs, a detailed pull-in voltage, collapse voltage, and contact force investigation using CoventorWare, a direct comparison of measured results with analytic and finite element predictions, and a means of choosing a micro-switch operating point for optimized contact resistance performance. [Copyright &y& Elsevier] AB - Copyright of Sensors & Actuators A: Physical is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER software KW - INTEGRATED software KW - ELECTRIC resistors KW - ELECTRODES KW - Contact force KW - Contact resistance KW - MEMS KW - Micro-switch N1 - Accession Number: 14374662; Coutu Jr., R.A. 1; Email Address: ronald.coutu@afit.edu Kladitis, P.E. 1 Starman, L.A. 2 Reid, J.R. 2; Affiliation: 1: Department of Electrical and Computer Engineering, Air Force Institute of Technology, AFIT/ENG 2950 Hobson Way, Wright Patterson AFB, OH, USA 2: Air Force Research Laboratory—Sensors Directorate, AFRL/SNHA 80 Scott Dr., Hanscom AFB, MA, USA; Source Info: Sep2004, Vol. 115 Issue 2/3, p252; Subject Term: COMPUTER software; Subject Term: INTEGRATED software; Subject Term: ELECTRIC resistors; Subject Term: ELECTRODES; Author-Supplied Keyword: Contact force; Author-Supplied Keyword: Contact resistance; Author-Supplied Keyword: MEMS; Author-Supplied Keyword: Micro-switch; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.sna.2004.03.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14374662&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sarua, A. AU - Kuball, M. AU - Van Nostrand, J. E. T1 - Phonon deformation potentials of the E2(high) phonon mode of AlxGa1-xN. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/09/20/ VL - 85 IS - 12 M3 - Article SP - 2217 EP - 2219 PB - American Institute of Physics SN - 00036951 AB - Micro-Raman spectroscopy was applied to study the E2(high) phonon deformation potentials in AlxGa1-xN material, which are required to convert phonon frequency shifts into stress values. AlxGa1-xN layers were grown by molecular beam epitaxy directly on (111)-oriented Si substrates. Mechanical bending was applied to introduce biaxial stress in the AlxGa1-xN layers and Raman shifts were measured as a function of the applied deformation. The Si phonon mode provided a reference for the applied stress and allowed determination of phonon deformation potential values for AlxGa1-xN. Deformation potentials of the GaN- and AlN-like E2shighd phonon mode of AlGaN alloys were found to be similar to the corresponding values of binary compounds. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN spectroscopy KW - PHONONS KW - QUASIPARTICLES (Physics) KW - SILICON KW - MOLECULAR beam epitaxy KW - DEFORMATIONS (Mechanics) N1 - Accession Number: 14546714; Sarua, A. 1; Email Address: a.sarua@bris.ac.uk Kuball, M. 1 Van Nostrand, J. E. 2; Affiliation: 1: H.H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, United Kingdom 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: 9/20/2004, Vol. 85 Issue 12, p2217; Subject Term: RAMAN spectroscopy; Subject Term: PHONONS; Subject Term: QUASIPARTICLES (Physics); Subject Term: SILICON; Subject Term: MOLECULAR beam epitaxy; Subject Term: DEFORMATIONS (Mechanics); NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.1793338 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14546714&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - sullivan, Patrick D. AU - Rood, Mark J. AU - Grevillot, Georges AU - Wander, Joseph D. AU - Hay, K. James T1 - Activated Carbon Fiber Cloth Electrothermal Swing Adsorption System. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2004/09/15/ VL - 38 IS - 18 M3 - Article SP - 4865 EP - 4877 SN - 0013936X AB - Capture and recovery of hazardous air pollutants (HAPs) and volatile organic compounds (VOCs) from gas streams using physical adsorption onto activated carbon fiber cloth (ACFC) is demonstrated on the bench-scale. This system is regenerated electrothermally, by passing an electric current directly through the ACFC. The adsorbate desorbs from the ACFC, rapidly condenses on the inside walls of the adsorber, and then drains from the adsorber as a pure liquid. Rapid electrothermal desorption exhibits such unique characteristics as extremely low purge gas flow rate, rapid rate of ACFC heating, rapid mass transfer kinetics inherent to ACFC, and in-vessel condensation. An existing system was scaled up 500%, and the new system was modeled using material and energy balances. Adsorption isotherms using methyl ethyl ketone (MEK) and ACFC were obtained while electricity passed through the ACFC and at temperatures above MEK's boiling point These isotherms agreed within 7% to Dubinin-Radushkevich modeled isotherms that were extrapolated from independently determined gravimetric measurements obtained at lower temperatures. Energy and material balances for the electrothermal desorption of organic vapors and ACFC agree to within 7% of experimentally measured values. These results allow the modeling of electrothermal desorption of organic vapors from gas streams with in-vessel condensation to optimize operating conditions of the system during regeneration of the adsorbent. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIR pollution KW - ADSORPTION KW - SEPARATION (Technology) KW - ELECTRICITY KW - ATMOSPHERIC temperature KW - GRAVIMETRIC analysis N1 - Accession Number: 14518131; sullivan, Patrick D. 1 Rood, Mark J. 1 Grevillot, Georges 2 Wander, Joseph D. 3 Hay, K. James 4; Affiliation: 1: Department of Civil and Environmental Engineering, University of Illinois, Urban, Illinois 61801. 2: Chemical Engineering Science Laboratory--CNRS, ENSIC, Nancy 54001, France. 3: United States Air Force Research Laboratory, Tyndall AFB, Florida 32403. 4: U.S. Army Engineer Research and Development Center-CERL, Champaign, Illinois 61826-9005.; Source Info: 9/15/2004, Vol. 38 Issue 18, p4865; Subject Term: AIR pollution; Subject Term: ADSORPTION; Subject Term: SEPARATION (Technology); Subject Term: ELECTRICITY; Subject Term: ATMOSPHERIC temperature; Subject Term: GRAVIMETRIC analysis; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14518131&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Repperger, D. W. AU - Buckholtz, K. AU - Danirls, M. T1 - A study on the stabilization of the van der Pol limit cycle. JO - International Journal of Systems Science JF - International Journal of Systems Science Y1 - 2004/09/15/ VL - 35 IS - 11 M3 - Article SP - 661 EP - 669 SN - 00207721 AB - The classical Van der Pol equation is investigated with the goal of stabilizing the well-known limit cycle with only a linear feedback controller. This result is demonstrated in this paper through a five-step process. The stabilization is global in the sense that, with the appropriate controller, the origin now becomes a stable equilibrium point for initial starting points both inside and outside the region, which would normally produce the oscillatory behavior. The technique is outlined in detail sufficient to generalize to other applications that arise in certain classes of nonlinear systems. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Systems Science is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EQUATIONS KW - LIMIT cycles KW - DIFFERENTIABLE dynamical systems KW - NONLINEAR systems KW - SYSTEMS theory KW - GLOBAL analysis (Mathematics) KW - DIFFERENTIAL equations N1 - Accession Number: 15679337; Repperger, D. W. 1; Email Address: daniel.repperger@he.wpafb.af.mil Buckholtz, K. 1 Danirls, M. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433-7022, USA.; Source Info: 9/15/2004, Vol. 35 Issue 11, p661; Subject Term: EQUATIONS; Subject Term: LIMIT cycles; Subject Term: DIFFERENTIABLE dynamical systems; Subject Term: NONLINEAR systems; Subject Term: SYSTEMS theory; Subject Term: GLOBAL analysis (Mathematics); Subject Term: DIFFERENTIAL equations; Number of Pages: 9p; Document Type: Article L3 - 10.1080/0020772041233131350 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15679337&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Slipenyuk, A. AU - Kuprin, V. AU - Milman, Yu. AU - Spowart, J.E. AU - Miracle, D.B. T1 - The effect of matrix to reinforcement particle size ratio (PSR) on the microstructure and mechanical properties of a P/M processed AlCuMn/SiCp MMC JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2004/09/15/ VL - 381 IS - 1/2 M3 - Article SP - 165 EP - 170 SN - 09215093 AB - Matrix to reinforcement particle size ratio (PSR) is the main factor governing the homogeneity of the reinforcement particle distribution in composites manufactured by the powder metallurgy route. To improve the homogeneity of the distribution, reinforcements with larger average particle size should be used. At the same time, increasing the reinforcement particle size leads to worsening of the mechanical properties due to lower work hardening and higher damage accumulation rates. It is therefore important to optimize the microstructure somewhere in between a smaller reinforcement particle size and a more homogeneous spatial distribution. The effect of PSR on the reinforcement spatial distribution, fabricability, and resulting mechanical properties of a P/M processed AlCuMn/SiC/15p composite was investigated. It was shown that increasing the PSR results in a less-uniform reinforcement distribution, which in turn leads to a decrease in the material fabricability and a general worsening of the mechanical properties. A close to linear dependence of the mechanical properties (yield stress, UTS, elongation before fracture, Young’s modulus) on PSR was found. Tensile elongation shows the highest sensitivity to the worsening of the homogeneity of the reinforcement spatial distribution caused by increasing the PSR. The effect of microstructural homogeneity on the relative change of mechanical properties does not seem to depend on matrix alloy plasticity. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLURGY KW - MATERIALS KW - STRAIN hardening KW - MICROSTRUCTURE KW - Mechanical behavior KW - Metal matrix composites KW - Particle size ratio KW - Powder metallurgy KW - Reinforcement distribution KW - Structure N1 - Accession Number: 14035283; Slipenyuk, A. 1; Email Address: san@ipms.kiev.ua Kuprin, V. 1 Milman, Yu. 1 Spowart, J.E. 2 Miracle, D.B. 3; Affiliation: 1: Institute for Problems of Materials Science, 3 Krzhizhanovky str., Kyiv 03680, Ukraine 2: UES Inc., Dayton, OH 45432, USA 3: Air-Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Sep2004, Vol. 381 Issue 1/2, p165; Subject Term: METALLURGY; Subject Term: MATERIALS; Subject Term: STRAIN hardening; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: Mechanical behavior; Author-Supplied Keyword: Metal matrix composites; Author-Supplied Keyword: Particle size ratio; Author-Supplied Keyword: Powder metallurgy; Author-Supplied Keyword: Reinforcement distribution; Author-Supplied Keyword: Structure; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.msea.2004.04.040 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14035283&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Deshmukh, S.P. AU - Mishra, R.S. AU - Kendig, K.L. T1 - Creep behavior and threshold stress of an extruded Al–6Mg–2Sc–1Zr alloy JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2004/09/15/ VL - 381 IS - 1/2 M3 - Article SP - 381 EP - 385 SN - 09215093 AB - Creep experiments were performed on extruded Al–6Mg–2Sc–1Zr (wt.%) alloy in a temperature range of 423–533 K. A threshold type creep behavior was measured and explained by observed dislocation-particle interactions. The experimental threshold stress values at various temperatures were compared with existing theoretical models. None of the available models could account for the decrease in threshold creep strength with increasing temperature. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM alloys KW - EXTRUSION process KW - CREEP testing machines KW - TEMPERATURE KW - Aluminum alloy KW - Creep test KW - Threshold stress N1 - Accession Number: 14035307; Deshmukh, S.P. 1 Mishra, R.S. 1; Email Address: rsmishra@umr.edu Kendig, K.L. 2; Affiliation: 1: Department of Metallurgical Engineering, University of Missouri-Rolla, Rolla, MO 65409, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, OH 45433, USA; Source Info: Sep2004, Vol. 381 Issue 1/2, p381; Subject Term: ALUMINUM alloys; Subject Term: EXTRUSION process; Subject Term: CREEP testing machines; Subject Term: TEMPERATURE; Author-Supplied Keyword: Aluminum alloy; Author-Supplied Keyword: Creep test; Author-Supplied Keyword: Threshold stress; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.msea.2004.05.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14035307&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Holmstrom, Scott A. AU - Natarajan, Lalgudi V. AU - Tondiglia, Vincent P. AU - Sutherland, Richard L. AU - Bunning, Timothy J. T1 - Mechanical tuning of holographic polymer-dispersed liquid crystal reflection gratings. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/09/13/ VL - 85 IS - 11 M3 - Article SP - 1949 EP - 1951 PB - American Institute of Physics SN - 00036951 AB - Holographic polymer-dispersed liquid crystal reflective structures have been formed using a highly elastic photopolymer. The elasticity allows for mechanical tuning of the reflection notch by over 120 nm in the visible spectral range using compressive stress. The shift in the central position of the reflection notch is related to the strain in the system and an effective elastic modulus for the structure is obtained. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystals KW - POLYMERS KW - PHOTOPOLYMERIZATION KW - ELASTICITY KW - REFLECTION (Optics) KW - RHEOLOGY N1 - Accession Number: 14434614; Holmstrom, Scott A. 1; Email Address: scott-holmstrom@utulsa.edu Natarajan, Lalgudi V. 2 Tondiglia, Vincent P. 2 Sutherland, Richard L. 2 Bunning, Timothy J. 2; Affiliation: 1: Department of Physics & Engineering Physics, University of Tulsa, Tulsa, Oklahoma 74104-3189 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433; Source Info: 9/13/2004, Vol. 85 Issue 11, p1949; Subject Term: LIQUID crystals; Subject Term: POLYMERS; Subject Term: PHOTOPOLYMERIZATION; Subject Term: ELASTICITY; Subject Term: REFLECTION (Optics); Subject Term: RHEOLOGY; Number of Pages: 3p; Illustrations: 1 Black and White Photograph, 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.1790601 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14434614&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bunker, Christopher E. AU - Karnes, John J. T1 - Low-Temperature Stability and High-Temperature Reactivity of Iron-Based Core-Shell Nanoparticles. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2004/09/08/ VL - 126 IS - 35 M3 - Article SP - 10852 EP - 10853 SN - 00027863 AB - Engineering the surface of nanoparticles to tailor physical or chemical properties for desired effects is the focus of numerous research efforts. As the particle size decreases, the surface area increases, offering the promise of enhanced reactivity, greater efficiency, and potentially new and unusual active sites. A problem arises when the active sites of the nanomaterial are unstable under ambient conditions. Methods to protect the active material from early or undesired reactions are required if easy, cost-effective applications of these materials are to be realized. KW - NANOPARTICLES KW - RESEARCH KW - TECHNOLOGY KW - SURFACE chemistry KW - PHYSICAL & theoretical chemistry KW - ENGINEERING N1 - Accession Number: 14434858; Bunker, Christopher E. 1; Email Address: christopher.bunker@wpafb.af.mil Karnes, John J. 1; Affiliation: 1: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, Ohio 45433.; Source Info: 9/8/2004, Vol. 126 Issue 35, p10852; Subject Term: NANOPARTICLES; Subject Term: RESEARCH; Subject Term: TECHNOLOGY; Subject Term: SURFACE chemistry; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: ENGINEERING; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14434858&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gillen, Glen D. AU - Guha, Shekhar T1 - Modeling and propagation of near-field diffraction patterns: A more complete approach. JO - American Journal of Physics JF - American Journal of Physics Y1 - 2004/09// VL - 72 IS - 9 M3 - Article SP - 1195 EP - 1201 SN - 00029505 AB - We discuss the origins and regions of validity of various near-field diffraction models. The complete Rayleigh—Sommerfeld model is found to accurately represent intensity distributions for axial distances up to and including the location of the aperture, a region where commonly used models fail. We show that near-field diffraction theory can be applied to the refraction of light at an interface between two different media yielding results that demonstrate the validity of Snell's law in the presence of diffraction. Calculations using near-field diffraction and Fourier optics are compared to experimentally measured intensity distributions. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Physics is the property of American Association of Physics Teachers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEAR-fields KW - DIFFRACTION patterns KW - OPTICAL diffraction KW - OPTICS KW - PHYSICS N1 - Accession Number: 14398061; Gillen, Glen D. 1,2; Email Address: ggillen@anteon.com Guha, Shekhar 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, Ohio 45433 2: Anteon Corporation, Dayton, Ohio 45433; Source Info: Sep2004, Vol. 72 Issue 9, p1195; Subject Term: NEAR-fields; Subject Term: DIFFRACTION patterns; Subject Term: OPTICAL diffraction; Subject Term: OPTICS; Subject Term: PHYSICS; Number of Pages: 7p; Illustrations: 8 Diagrams, 1 Chart; Document Type: Article L3 - 10.1119/1.1767102 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14398061&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tokish, John M. AU - Kocher, Mininder S. AU - Hawkins, Richard J. T1 - Ergogenic Aids: A Review of Basic Science, Performance, Side Effects, and Status in Sports. JO - American Journal of Sports Medicine JF - American Journal of Sports Medicine Y1 - 2004/09// VL - 32 IS - 6 M3 - Article SP - 1543 EP - 1553 SN - 03635465 AB - The use of drugs and supplements to enhance performance has become a part of mainstream athletics. Many team physicians and sports medicine practitioners are unfamiliar with the benefits and risks of these products and thus are unable to educate young athletes on this topic. In spite of numerous reports on the health risks of anabolic steroid use, 1 to 3 million Americans have used them. Human growth hormone has been tried by up to 5% of 10th graders, although no scientific study has shown that it is an effective performance-enhancing drug. Amphetamines and similar compounds may be the most widely abused drug in baseball; recently, they have come under increased scrutiny in sport. Erythropoietin is a highly effective aerobic enhancer that has been linked to multiple deaths in cyclists and other endurance athletes. The neutraceutical industry, led by supplements such as creatine, ephedra, and androstenedione, remains unregulated by the Food and Drug Administration and has serious issues with quality and side effects. An understanding of these products is essential for the sports medicine practitioner to provide sound, safe advice to the athlete. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Sports Medicine is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPORTS KW - DRUGS -- Physiological effect KW - MEDICINE KW - PHYSICAL fitness KW - ATHLETES KW - ANDROSTENEDIONE KW - performance-enhancing drugs; anabolic agents; steroids; stimulants N1 - Accession Number: 14350827; Tokish, John M. 1 Kocher, Mininder S. 2 Hawkins, Richard J. 3; Affiliation: 1: US Air Force Academy, Colorado Springs, Colorado. 2: Harvard Medical School and Harvard School of Public Health, Boston, Massachusetts. 3: Steadman Hawkins Sports Medicine Foundation, Vail, Colorado.; Source Info: Sep2004, Vol. 32 Issue 6, p1543; Subject Term: SPORTS; Subject Term: DRUGS -- Physiological effect; Subject Term: MEDICINE; Subject Term: PHYSICAL fitness; Subject Term: ATHLETES; Subject Term: ANDROSTENEDIONE; Author-Supplied Keyword: performance-enhancing drugs; anabolic agents; steroids; stimulants; NAICS/Industry Codes: 711219 Other Spectator Sports; NAICS/Industry Codes: 713940 Fitness and Recreational Sports Centers; Number of Pages: 11p; Document Type: Article L3 - 10.1177/0363546504268041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14350827&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guilbault, Rebecca L. AU - Bryant, Fred B. AU - Brockway, Jennifer Howard AU - Posavac, Emil J. T1 - A Meta-Analysis of Research on Hindsight Bias. JO - Basic & Applied Social Psychology JF - Basic & Applied Social Psychology Y1 - 2004/09// VL - 26 IS - 2/3 M3 - Article SP - 103 EP - 117 PB - Taylor & Francis Ltd SN - 01973533 AB - We conducted a meta-analysis of research on hindsight bias to gain an up-to-date summary of the overall strength of hindsight effects and to test hypotheses about potential moderators of hindsight distortion. A total of 95 studies (83 published and 12 unpublished) were included, and 252 independent effect sizes were coded for moderator variables in 3 broad categories involving characteristics of the study, of measurement, and of the experimental manipulation. When excluding missing effect sizes, the overall mean effect size was Md = .39 with a 95% confidence interval of .36 to .42. Five main findings emerged: (a) effect sizes calculated from objective probability estimates were larger than effect sizes calculated from subjective probability estimates; (b) effect sizes of studies that used almanac questions were larger than effect sizes of studies that used real-world events or case histories; (c) studies that included neutral outcomes resulted in larger effect sizes than studies that used positive or negative outcomes; (d) studies that included manipulations to increase hindsight bias resulted in significantly larger effect sizes than studies in which there were no manipulations to reduce or increase hindsight bias; and (e) studies that included manipulations to reduce hindsight bias did not produce lower effect sizes. These findings contribute to our understanding of hindsight bias by updating the state of knowledge, widening the range of known moderator variables, identifying factors that may activate different mediating processes, and highlighting critical gaps in the research literature. [ABSTRACT FROM AUTHOR] AB - Copyright of Basic & Applied Social Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HINDSIGHT bias (Psychology) KW - MEMORY KW - PSYCHOLOGY KW - META-analysis KW - RESEARCH N1 - Accession Number: 18331850; Guilbault, Rebecca L. 1 Bryant, Fred B. 1; Email Address: fbryant@luc.edu Brockway, Jennifer Howard 2 Posavac, Emil J. 1; Affiliation: 1: Department of Psychology, Loyola University Chicago 2: United States Air Force Academy; Source Info: Sep2004, Vol. 26 Issue 2/3, p103; Subject Term: HINDSIGHT bias (Psychology); Subject Term: MEMORY; Subject Term: PSYCHOLOGY; Subject Term: META-analysis; Subject Term: RESEARCH; Number of Pages: 15p; Illustrations: 3 Charts; Document Type: Article L3 - 10.1207/s15324834basp2602&3_1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=18331850&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bechel, Vernon T. AU - Kim, Ran Y. T1 - Damage trends in cryogenically cycled carbon/polymer composites JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2004/09// VL - 64 IS - 12 M3 - Article SP - 1773 EP - 1784 SN - 02663538 AB - Six carbon/polymer composites (three materials, two lay-ups each) were cryogenically cycled by repeated submersion of 5 cm × 5 cm flat plates in liquid nitrogen (LN2). The materials and lay-ups were chosen to study the density of ply-level micro-cracks that formed as a function of number of cycles, prepreg thickness, residual stresses, and the orientation of adjacent plies. IM7/977-2 carbon/epoxy, IM7/5250-4 carbon/bismaleimide, and IM7/3K carbon/epoxy cross-ply ([0/90]2S) and quasi-isotropic ([0/45/45/90]S) laminates were tested for up to 1000 cycles. Several trends in damage development were observed that should be considered when formulating a model for predicting the formation of micro-cracks due to cryogenic cycling. For example, reducing the ply thickness by 30% in the IM7/5250-4 delayed surface ply micro-cracking by up to 200 cycles. However, by 1000 cycles the surface ply micro-crack densities were nearly equal regardless of the ply thickness. Also, micro-crack densities 2.5 cm away from the sample edges were greater than at the edges in plies with large amounts of damage (>0.2 micro-cracks/cm) and interior micro-cracks were often not extensions of micro-cracks observed on the edges of the samples. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOW temperature engineering KW - CARBON KW - COMPOSITE materials KW - STRENGTH of materials KW - STUDY & teaching KW - A. Polymer–matrix composites KW - B. Environmental degradation KW - C. Residual stress, Cryogenic cycling KW - C. Transverse cracking N1 - Accession Number: 13387884; Bechel, Vernon T. 1; Email Address: vernon.bechel@wpafb.af.mil Kim, Ran Y. 2; Affiliation: 1: Air Force Research Laboratory, AFRL/MLBC, 2941 P Street, Room 136, Wright Patterson AFB, OH 45433-7750, USA 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA; Source Info: Sep2004, Vol. 64 Issue 12, p1773; Subject Term: LOW temperature engineering; Subject Term: CARBON; Subject Term: COMPOSITE materials; Subject Term: STRENGTH of materials; Subject Term: STUDY & teaching; Author-Supplied Keyword: A. Polymer–matrix composites; Author-Supplied Keyword: B. Environmental degradation; Author-Supplied Keyword: C. Residual stress, Cryogenic cycling; Author-Supplied Keyword: C. Transverse cracking; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.compscitech.2003.12.007 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13387884&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roberts, Howard W. AU - Leonard, Daniel L. AU - Vandewalle, Kraig S. AU - Cohen, Mark E. AU - Charlton, David G. T1 - The effect of a translucent post on resin composite depth of cure JO - Dental Materials JF - Dental Materials Y1 - 2004/09// VL - 20 IS - 7 M3 - Article SP - 617 EP - 622 SN - 01095641 AB - Objective. To evaluate the effect of a light-transmitting post on the depth of cure of a resin composite.Methods. Acetate resin molds were filled with resin composite in which a light-transmitting post was inserted into the center and photopolymerized to the manufacturer''s recommendations. Identical molds without a light-transmitting post were photopolymerized in a similar matter and served as a control. Molds were sectioned on a water-cooled, diamond saw at prescribed distances and the depth of cure was determined using a Knoop Hardness bottom-to-top ratio criterion. Data within each group were analyzed using 2-way (depth-by-distance) repeated measure ANOVA. Between-group contrasts (post versus no post) were accessed by a 3-way (2 within-subjects and 1 between-subjects) ANOVA with critical p=0.05.Results. The presence of the post did increase (p<0.001) Knoop Hardness values in simulated apical regions as compared to a control. However, there was no difference in the depth of cure between the groups (3-way analysis p=0.2) and also when evaluated using an 80% bottom-to-top Knoop Hardness ratio.Significance. The results suggest that these posts may have a limited utility when judged against a Knoop Hardness ratio criterion. [Copyright &y& Elsevier] AB - Copyright of Dental Materials is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GUMS & resins KW - PHOTOPOLYMERIZATION KW - PHOTOCHEMISTRY KW - RESEARCH KW - Depth of cure KW - Light transmittal KW - Resin composite KW - Translucent posts N1 - Accession Number: 13625637; Roberts, Howard W. 1; Email Address: howard.roberts@ndri.med.navy.mil Leonard, Daniel L. 2 Vandewalle, Kraig S. 1 Cohen, Mark E. 3 Charlton, David G. 3; Affiliation: 1: United States Air Force Dental Investigation Service, Det 1 USAFSAM, 310C B Street, Building 1H, Great Lakes, IL 60088, USA 2: Mission St. Joseph's Hospital, Asheville, NC, USA 3: Naval Institute for Dental and Biomedical Research, Great Lakes, IL, USA; Source Info: Sep2004, Vol. 20 Issue 7, p617; Subject Term: GUMS & resins; Subject Term: PHOTOPOLYMERIZATION; Subject Term: PHOTOCHEMISTRY; Subject Term: RESEARCH; Author-Supplied Keyword: Depth of cure; Author-Supplied Keyword: Light transmittal; Author-Supplied Keyword: Resin composite; Author-Supplied Keyword: Translucent posts; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.dental.2003.10.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13625637&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - De Jong, Marla J. AU - Moser, Debra K. AU - An, Kyungeh AU - Chung, Misook L. T1 - Anxiety is not manifested by elevated heart rate and blood pressure in acutely ill cardiac patients JO - European Journal of Cardiovascular Nursing JF - European Journal of Cardiovascular Nursing Y1 - 2004/09// VL - 3 IS - 3 M3 - Article SP - 247 EP - 253 SN - 14745151 AB - Background: Accurate assessment of anxiety in cardiac patients is important because anxiety is associated with adverse outcomes. Clinicians often use heart rate and blood pressure as indicators of anxiety; however, little is known about whether these measures accurately reflect anxiety in acutely ill patients. Aims: The purpose of this study was to determine whether heart rate and blood pressure were related to level of anxiety in patients with chronic advanced heart failure (HF), patients with acute myocardial infarction (AMI), and healthy individuals. Methods and Results: In this descriptive, correlational study, anxiety, heart rate, and blood pressure were measured at the same time in three groups of individuals: (1) 54 patients hospitalized for AMI; (2) 32 patients with chronic advanced HF; and (3) 31 healthy individuals. State anxiety was measured using the anxiety subscale of the Brief Symptom Inventory. Heart rate and blood pressure data were collected immediately prior to the anxiety assessment. Data were collected in the outpatient setting for patients with HF and healthy individuals. For patients with AMI, data were collected a mean of 48±33 h after admission. There were no correlations between anxiety and heart rate or diastolic blood pressure. Higher anxiety was associated with lower systolic blood pressure in patients with AMI (r=-0.23, P<0.05) and in healthy individuals (r=-0.27, P<0.05). Conclusion: Elevated heart rate and blood pressure do not accurately reflect level of anxiety as reported by patients with HF or AMI and healthy individuals, and thus cannot be used to assess anxiety in acutely ill patients. Clinicians who use changes in heart rate or blood pressure as indicators of anxiety may fail to recognize and treat anxiety, placing their patients at high risk for both immediate and long-term complications. [Copyright &y& Elsevier] AB - Copyright of European Journal of Cardiovascular Nursing is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANXIETY KW - HEART failure KW - CARDIAC patients KW - HEART beat KW - BLOOD pressure KW - Anxiety KW - Blood pressure KW - Heart failure KW - Heart rate KW - Myocardial infarction N1 - Accession Number: 14311447; De Jong, Marla J. 1; Email Address: mdejong@aol.com Moser, Debra K. 2 An, Kyungeh 3 Chung, Misook L. 2; Affiliation: 1: College of Nursing, University of Kentucky/United States Air Force, Lexington, KY USA 2: College of Nursing, University of Kentucky, Lexington, KY, USA 3: College of Nursing, Ewha Women's University, Seoul, South Korea; Source Info: Sep2004, Vol. 3 Issue 3, p247; Subject Term: ANXIETY; Subject Term: HEART failure; Subject Term: CARDIAC patients; Subject Term: HEART beat; Subject Term: BLOOD pressure; Author-Supplied Keyword: Anxiety; Author-Supplied Keyword: Blood pressure; Author-Supplied Keyword: Heart failure; Author-Supplied Keyword: Heart rate; Author-Supplied Keyword: Myocardial infarction; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ejcnurse.2004.06.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14311447&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhao, Jian-Shen AU - Spain, Jim AU - Thiboutot, Sonia AU - Ampleman, Guy AU - Greer, Charles AU - Hawari, Jalal T1 - Phylogeny of cyclic nitramine-degrading psychrophilic bacteria in marine sediment and their potential role in the natural attenuation of explosives JO - FEMS Microbiology Ecology JF - FEMS Microbiology Ecology Y1 - 2004/09// VL - 49 IS - 3 M3 - Article SP - 349 EP - 357 SN - 01686496 AB - Previously we reported on in situ mineralization of cyclic nitramine explosives including hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) and octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) in marine sediment from Halifax Harbour. In the present study, we isolated several novel psychrophilic bacteria from the sediment with optimal growth temperature at 10 or 15 °C. Phylogenetic analysis of their 16S rRNA genes identified the isolates as members of the gamma and delta subdivisions of Proteobacteria, Fusobacteria and Clostridiales. The isolates mineralized 3.7–45.2% of RDX (92 μM) in 82 days of incubation at 10 °C under oxygen-limited or anaerobic conditions with the gamma subdivision isolates demonstrating the highest mineralization (45.2% of total C). Removal of RDX by all isolates was accompanied by the formation of all three nitroso derivatives, with the mono nitroso derivative (MNX) being the major one. Isolates of the delta proteobacteria and Fusobacteria removed HMX with concurrent formation of the mononitroso derivative (NO-HMX). Using resting cells of isolates of the gamma subdivision, methylenedinitramine (MEDINA) and 4-nitro-2,4-diazabutanal (NDAB) were detected, suggesting ring-cleavage following denitration of either RDX and/or its initially reduced product, MNX. These results clearly demonstrate that psychrophilic bacteria capable of degrading cyclic nitramines are present in the marine sediment, and might contribute to the in situ biodegradation and natural attenuation of the chemicals. [Copyright &y& Elsevier] AB - Copyright of FEMS Microbiology Ecology is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BACTERIA KW - PROKARYOTES KW - MARINE sediments KW - BIOCHEMISTRY KW - 4-Nitro-2,4-diazabutanal KW - Cyclic nitramine explosive KW - Marine bacteria KW - Marine sediment KW - Methylenedinitramine KW - Phylogeny KW - Psychrophilic bacteria KW - RDX biodegradation KW - Shewanella KW - Sulfate-reducing bacteria N1 - Accession Number: 14188485; Zhao, Jian-Shen 1 Spain, Jim 2 Thiboutot, Sonia 3 Ampleman, Guy 3 Greer, Charles 1 Hawari, Jalal 1; Email Address: jalal.hawari@cnrc-nrc.gc.ca; Affiliation: 1: Biotechnology Research Institute, National Research Council of Canada, 6100 Royalmount Avenue, Montreal, Que., Canada H4P 2R2 2: Air Force Research Laboratory-MLQL, Tyndall AFB, FL 32403, USA 3: Department of National Defense, Defense Research Establishment Valcartier, Que., Canada G3J 1X5; Source Info: Sep2004, Vol. 49 Issue 3, p349; Subject Term: BACTERIA; Subject Term: PROKARYOTES; Subject Term: MARINE sediments; Subject Term: BIOCHEMISTRY; Author-Supplied Keyword: 4-Nitro-2,4-diazabutanal; Author-Supplied Keyword: Cyclic nitramine explosive; Author-Supplied Keyword: Marine bacteria; Author-Supplied Keyword: Marine sediment; Author-Supplied Keyword: Methylenedinitramine; Author-Supplied Keyword: Phylogeny; Author-Supplied Keyword: Psychrophilic bacteria; Author-Supplied Keyword: RDX biodegradation; Author-Supplied Keyword: Shewanella; Author-Supplied Keyword: Sulfate-reducing bacteria; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.femsec.2004.04.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14188485&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, Z.M. AU - Zhu, X.A. AU - Tsai, C.T. AU - Tham, C.L. AU - Beraun, J.E. T1 - Hybrid-conventional finite element for gradient-dependent plasticity JO - Finite Elements in Analysis & Design JF - Finite Elements in Analysis & Design Y1 - 2004/09// VL - 40 IS - 15 M3 - Article SP - 2085 EP - 2100 SN - 0168874X AB - The hybrid-conventional finite element method is applied to the analysis of quasi-static, gradient-dependent elastoplastic problems in solid mechanics. The stresses within the element domain and the displacements on the boundary are simultaneously and independently approximated using Trefftz constraints, which lead to boundary integrals. The plastic multipliers are conventionally approximated with regard to C0 continuity of the multiplier field of the gradient-dependent plasticity. The finite element formulation is derived using a Galerkin-weighted residual approach. The plastic boundary conditions are examined and plastic radiations are set to zero on the plastic boundaries. The effectiveness of the present method is demonstrated with three numerical applications. [Copyright &y& Elsevier] AB - Copyright of Finite Elements in Analysis & Design is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYBRIDIZATION KW - GALERKIN methods KW - NUMERICAL analysis KW - Gradient-dependent plasticity KW - Hybrid Trefftz stress element KW - Plastic boundary conditions KW - Softening plasticity N1 - Accession Number: 14187971; Wang, Z.M. 1 Zhu, X.A. 1 Tsai, C.T. 1; Email Address: tsaict@fau.edu Tham, C.L. 2 Beraun, J.E. 2; Affiliation: 1: Department of Mechanical Engineering, Florida Atlantic University, 777 Glades Road, Boca Raton, FL 33431, USA 2: Laser Effects Research Branch, Directed Energy Directorate, Air Force Research Laboratory Kirtland AFB, NM 87117, USA; Source Info: Sep2004, Vol. 40 Issue 15, p2085; Subject Term: HYBRIDIZATION; Subject Term: GALERKIN methods; Subject Term: NUMERICAL analysis; Author-Supplied Keyword: Gradient-dependent plasticity; Author-Supplied Keyword: Hybrid Trefftz stress element; Author-Supplied Keyword: Plastic boundary conditions; Author-Supplied Keyword: Softening plasticity; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.finel.2004.02.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14187971&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kuprowicz, Nicholas J. AU - Ervin, Jamie S. AU - Zabarnick, Steven T1 - Modeling the liquid-phase oxidation of hydrocarbons over a range of temperatures and dissolved oxygen concentrations with pseudo-detailed chemical kinetics JO - Fuel JF - Fuel Y1 - 2004/09// VL - 83 IS - 13 M3 - Article SP - 1795 EP - 1801 SN - 00162361 AB - The ability of pseudo-detailed chemical kinetic modeling to simulate the oxidation behavior of Exxsol D-80, a paraffin blend whose oxidative characteristics are representative of severely hydrotreated jet fuels, is assessed. The effects of temperature and initial dissolved O2 concentration on oxidation are considered. A 17-step pseudo-detailed mechanism is shown to provide reasonable simulations of Exxsol D-80 oxidation over a range of temperatures, but not over a range of initial dissolved O2 concentrations. The addition of alkyl-peroxy radical isomerization to the pseudo-detailed mechanism did not reconcile the initial dissolved O2 limitation. With the addition of a peroxy radical decomposition reaction to the original 17-step pseudo-detailed mechanism, reasonable simulations of Exxsol D-80 oxidation over a range of temperatures and initial dissolved O2 concentrations were obtained. Analysis of the rate parameters associated with peroxy radical decomposition suggests that aromatic hydrocarbons play a significant role in the oxidation of fuels, even at low (<1% by weight) aromatic levels. [Copyright &y& Elsevier] AB - Copyright of Fuel is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROCARBONS KW - OXIDATION KW - PARAFFIN wax KW - JET planes -- Fuel KW - Autoxidation KW - Kinetics KW - Modeling N1 - Accession Number: 13469446; Kuprowicz, Nicholas J. 1,2; Email Address: nicholas.kuprowicz@wpafb.af.mil Ervin, Jamie S. 2,3 Zabarnick, Steven 2,3; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, 45433-7251, USA 2: Department of Mechanical and Aerospace Engineering, University of Dayton, Dayton, OH 45469-0210, USA 3: University of Dayton Research Institute, Dayton, OH 45469-0116, USA; Source Info: Sep2004, Vol. 83 Issue 13, p1795; Subject Term: HYDROCARBONS; Subject Term: OXIDATION; Subject Term: PARAFFIN wax; Subject Term: JET planes -- Fuel; Author-Supplied Keyword: Autoxidation; Author-Supplied Keyword: Kinetics; Author-Supplied Keyword: Modeling; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 324110 Petroleum Refineries; NAICS/Industry Codes: 324199 All Other Petroleum and Coal Products Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.fuel.2004.03.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13469446&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Welsh, Byron M. AU - Kent, Brian M. AU - Buterbaugh, Alan L. T1 - Full Polarimetric Calibration for Radar Cross-Section Measurements: Performance Analysis. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2004/09// VL - 52 IS - 9 M3 - Article SP - 2357 EP - 2365 SN - 0018926X AB - Full polarimetiic scattering measurements are increasingly required for radar cross-section (RCS) tests. Conventional calibration fails to take into account the small amount of antenna cross-polarization coupling that will be present for any practical antenna. In contrast, full polarimetric calibration takes into account and compensates for the nonideal couplings in the transmit and receive channels and paths. We use an existing full polarimetric calibration procedure and a simulation-based performance to study how well the procedure improves measurement accuracy over conventional calibration under practical measurement conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICAL measurements KW - INDUSTRIAL productivity KW - STANDARDIZATION KW - CALIBRATION KW - ELECTRONIC systems KW - ELECTRONIC pulse techniques KW - Calibration KW - polarimetric calibration KW - polarization N1 - Accession Number: 14506232; Welsh, Byron M. 1; Email Address: byron.welsh@atk.com Kent, Brian M. 2; Email Address: brian.kent@wpafb.af.mil Buterbaugh, Alan L. 1; Email Address: alan.buterbaugh@atk.com; Affiliation: 1: ATK Mission Research, Dayton, OH 45430-2108 USA. 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA.; Source Info: Sep2004, Vol. 52 Issue 9, p2357; Subject Term: PHYSICAL measurements; Subject Term: INDUSTRIAL productivity; Subject Term: STANDARDIZATION; Subject Term: CALIBRATION; Subject Term: ELECTRONIC systems; Subject Term: ELECTRONIC pulse techniques; Author-Supplied Keyword: Calibration; Author-Supplied Keyword: polarimetric calibration; Author-Supplied Keyword: polarization; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TAP.2004.834042 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14506232&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eismann, Michael T. AU - Hardie, Russell C. T1 - Application of the Stochastic Mixing Model to Hyperspectral Resolution Enhancement. JO - IEEE Transactions on Geoscience & Remote Sensing JF - IEEE Transactions on Geoscience & Remote Sensing Y1 - 2004/09// VL - 42 IS - 9 M3 - Article SP - 1924 EP - 1933 SN - 01962892 AB - A maximum a posteriori (MAP) estimation method is described for enhancing the spatial resolution of a hyperspectral image using a higher resolution coincident panchromatic image. The approach makes use of a stochastic mixing model (SMM) of the underlying spectral scene content to develop a cost function that simulaneously optimizes the estimated hyperspectral scene relative to the observed hyperspectral and panchromatic imagery, as well as the local statistics of the spectral mixing model. The incorporation of the stochastic mixing model is found to be the key ingredient for reconstructing subpixel spectral information in that it provides the necessary constraints that lead to a well-conditioned linear system of equations for the high-resolution hyperspectral image estimate. Here, the mathematical formulation of the proposed MAP method is described. Also, enhancement results using various hyperspectral image datasets are provided. In general, it is found that the MAP/SMM method is able to reconstruct subpixel information in several principal components of the high-resolution hyperspectral image estimate, while the enhancement for conventional methods, like those based on least squares estimation, is limited primarily to the first principal component (i.e., the intensity component). [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYSTEMS theory KW - CORRELATION (Statistics) KW - LINEAR systems KW - ESTIMATION theory KW - RESOLUTION (Optics) KW - SPECTRUM analysis KW - HyperspectraI KW - Maximum a posteriori (MAP) estimation KW - resolution enhancement KW - stochastic mixing model. N1 - Accession Number: 14524435; Eismann, Michael T. 1; Email Address: michael.eismann@wpafh.ml Hardie, Russell C. 2; Email Address: rhardie@udayton.edu; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7700 USA. 2: Department of Electrical and Computer Engineering and ihe Blectró.Optics Prograin, University of Dayton, Dayton, 01-145459-0226; Source Info: Sep2004, Vol. 42 Issue 9, p1924; Subject Term: SYSTEMS theory; Subject Term: CORRELATION (Statistics); Subject Term: LINEAR systems; Subject Term: ESTIMATION theory; Subject Term: RESOLUTION (Optics); Subject Term: SPECTRUM analysis; Author-Supplied Keyword: HyperspectraI; Author-Supplied Keyword: Maximum a posteriori (MAP) estimation; Author-Supplied Keyword: resolution enhancement; Author-Supplied Keyword: stochastic mixing model.; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TGRS.2004.830644 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14524435&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hardie, Russell C. AU - Eismann, Michael T. AU - Wilson, Gregory L. T1 - MAP Estimation for Hyperspectral Image Resolution Enhancement Using an Auxiliary Sensor. JO - IEEE Transactions on Image Processing JF - IEEE Transactions on Image Processing Y1 - 2004/09// VL - 13 IS - 9 M3 - Article SP - 1174 EP - 1184 SN - 10577149 AB - This paper presents a novel maximum a posteriori estimator for enhancing the spatial resolution of an image using co-registered high spatial-resolution imagery from an auxiliary sensor. Here, we focus on the use of high-resolution panchomatic data to enhance hyperspectral imagery. However, the estimation framework developed allows for any number of spectral bands in the primary and auxiliary image. The proposed technique is suitable for applications where some correlation, either localized or global, exists between the auxiliary image and the image being enhanced. To exploit localized correlations, a spatially varying statistical model, based on vector quantization, is used. Another important aspect of the proposed algorithm is that it allows for the use of an accurate observation model relating the "true" scene with the low-resolutions observations. Experimental results with hyperspectral data derived from the airborne visible-infrared imaging spectrometer are presented to demonstrate the efficacy of the proposed estimator. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Image Processing is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMAGE processing KW - RESOLUTION (Optics) KW - DETECTORS KW - ALGORITHMS KW - SPECTROMETERS KW - IMAGING systems KW - REGRESSION analysis N1 - Accession Number: 14255958; Hardie, Russell C. 1; Email Address: rhardie@udayton.edu Eismann, Michael T. 2; Email Address: Michael.Eismann@ wpafb.af.mil Wilson, Gregory L. 3; Email Address: gwilson@mrcday.com; Affiliation: 1: Department of Electrical and Computer Engineering and Electro-Optics Program, University of Dayton, Dayton, OH 45459-0226 USA. 2: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7700 USA. 3: Mission Research Corporation, Dayton, OH 45430 USA.; Source Info: Sep2004, Vol. 13 Issue 9, p1174; Subject Term: IMAGE processing; Subject Term: RESOLUTION (Optics); Subject Term: DETECTORS; Subject Term: ALGORITHMS; Subject Term: SPECTROMETERS; Subject Term: IMAGING systems; Subject Term: REGRESSION analysis; NAICS/Industry Codes: 812922 One-Hour Photofinishing; NAICS/Industry Codes: 812921 Photofinishing Laboratories (except One-Hour); NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TIP.2004.829779 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14255958&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Subramanyam, Guru AU - Riehl, Bonnie AU - Ahamed, Faruque AU - Biggers, Rand AU - Campbell, Angela AU - Kuylenstierna, Dan AU - Vorobiev, Andrei AU - Gevorgian, S. T1 - New Research Directions in Tunable Microwave Dielectrics. JO - Integrated Ferroelectrics JF - Integrated Ferroelectrics Y1 - 2004/09// VL - 66 IS - 1 M3 - Article SP - 139 EP - 151 SN - 10584587 AB - Nano-structured Ba0.6Sr0.4TiO3 (BST) thin-films are currently being investigated by our group for applications in tunable microwave devices and circuits. This work is performed in collaboration with Air Force Research Laboratory Materials Directorate. We have synthesized low microwave-loss nano-structured columnar BST thin-films using a self directed process-controlled pulsed laser deposition system. The average grain size of the films was controllable from ∼20 nm to ∼150 nm without any clustering by increasing the oxygen ambient pressure from 38 mT to 150 mT. The films with lower average grain size have been found to be tunable and low loss up to 50 GHz. Precise grain size control has resulted in low loss tunable high-K dielectric for variety of applications. Two new research applications are pursued by our group. One is in the design and development of electromagnetic band gap structures (EBGs) and the other in the design and development of capacitive shunt switches for microwave applications. [ABSTRACT FROM AUTHOR] AB - Copyright of Integrated Ferroelectrics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS -- Industrial applications KW - ELECTRONIC apparatus & appliances KW - MICROWAVE devices KW - ARMED Forces KW - COATING processes KW - PULSED laser deposition KW - B.STO thin-films KW - capacitive shunt switches KW - Ferroelectrics KW - Nanostructured thin-films KW - tunable microwave devices N1 - Accession Number: 15811988; Subramanyam, Guru 1 Riehl, Bonnie 1 Ahamed, Faruque 1 Biggers, Rand 2 Campbell, Angela 2 Kuylenstierna, Dan 3 Vorobiev, Andrei 3 Gevorgian, S. 3; Affiliation: 1: Department of ECE, University of Dayton, Dayton, OH 45469. 2: Air Force Research Laboratory, WPAFB, OH 45433. 3: Chalmers University of Technology, Gothenborg, Sweden.; Source Info: 2004, Vol. 66 Issue 1, p139; Subject Term: LASERS -- Industrial applications; Subject Term: ELECTRONIC apparatus & appliances; Subject Term: MICROWAVE devices; Subject Term: ARMED Forces; Subject Term: COATING processes; Subject Term: PULSED laser deposition; Author-Supplied Keyword: B.STO thin-films; Author-Supplied Keyword: capacitive shunt switches; Author-Supplied Keyword: Ferroelectrics; Author-Supplied Keyword: Nanostructured thin-films; Author-Supplied Keyword: tunable microwave devices; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 13p; Document Type: Article L3 - 10.1080/10584580490894988 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15811988&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ryu, Sei-Hyung AU - Krishnaswami, Sumi AU - Das, Mrinal AU - Richmond, James AU - Agarwal, Anant AU - Palmour, John AU - Scofield, James T1 - 2 KV 4H-SiC DMOSFETS FOR LOW LOSS, HIGH FREQUENCY SWITCHING APPLICATIONS. JO - International Journal of High Speed Electronics & Systems JF - International Journal of High Speed Electronics & Systems Y1 - 2004/09// VL - 14 IS - 3 M3 - Article SP - 255 EP - 259 PB - World Scientific Publishing Company SN - 01291564 AB - Due to the high critical field in 4H-SiC. the drain charge and switching loss densities in a SiC power device are approximately 10X higher than that of a silicon device. However, for the same voltage and resistance ratings, the device area is much smaller for the 4H-SiC device. Therefore, the total drain charge and switching losses are much lower for the 4H-SiC power device. A 2.3 kV, 13.5 mΩ-cm2 4H-SiC power DMOSFET with a device area of 2.1 mm × 2.1 mm has been demonstrated. The device showed a stable avalanche at a drain bias of 2.3 kV, and an on-current of 5 A with a VGS of 20 V and a VDS of 2.6 V. Approximately an order of magnitude lower parasitic capacitance values, as compared to those of commercially available silicon power MOSFETs, were measured for the 4H-SiC power DMOSFET. This suggests that the 4H-SiC DMOSFET can provide an order of magnitude improvement in switching performance in high speed switching applications. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of High Speed Electronics & Systems is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL oxide semiconductor field-effect transistors KW - SILICON KW - ELECTRONICS KW - FIELD-effect transistors KW - TRANSISTORS KW - SWITCHING circuits N1 - Accession Number: 17225263; Ryu, Sei-Hyung 1 Krishnaswami, Sumi 1 Das, Mrinal 1 Richmond, James 1 Agarwal, Anant 1 Palmour, John 1 Scofield, James 2; Affiliation: 1: Cree, Inc.. 4600 Silicon Drive. Durham, NC 27703, USA. 2: Air Force Research Laboratory, Wright-Patterson Airforce Rase, OH 45433, USA.; Source Info: Sep2004, Vol. 14 Issue 3, p255; Subject Term: METAL oxide semiconductor field-effect transistors; Subject Term: SILICON; Subject Term: ELECTRONICS; Subject Term: FIELD-effect transistors; Subject Term: TRANSISTORS; Subject Term: SWITCHING circuits; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; NAICS/Industry Codes: 335313 Switchgear and Switchboard Apparatus Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17225263&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Paul, D. AU - Pratt, D. T1 - History of Flight Vehicle Structures 1903-1990. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2004/09//Sep/Oct2004 VL - 41 IS - 5 M3 - Article SP - 969 EP - 977 SN - 00218669 AB - In this paper the authors present a survey of the major developments in structure technology that have influenced modern aircraft design. They also offer their perspectives on the key materials and concepts that drive air vehicle structural design. The authors discuss the focus of research and development structural development resources and address the reasons for this focus. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES -- Design & construction KW - STRUCTURAL design KW - STRUCTURAL analysis (Engineering) KW - AIRCRAFT industry KW - AEROSPACE industries N1 - Accession Number: 14939717; Paul, D. 1,2,3 Pratt, D. 1,4; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542 2: Chief Scientist, AFRL/VA 3: Fellow, AIAA 4: Technical Advisor, AFRL/VAS; Source Info: Sep/Oct2004, Vol. 41 Issue 5, p969; Subject Term: AIRPLANES -- Design & construction; Subject Term: STRUCTURAL design; Subject Term: STRUCTURAL analysis (Engineering); Subject Term: AIRCRAFT industry; Subject Term: AEROSPACE industries; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; NAICS/Industry Codes: 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 441228 Motorcycle, ATV, and All Other Motor Vehicle Dealers; NAICS/Industry Codes: 441220 Motorcycle, boat and other motor vehicle dealers; Number of Pages: 9p; Illustrations: 10 Black and White Photographs, 1 Diagram, 5 Charts, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14939717&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Clay, Christopher L. T1 - High Speed Flight Vehicle Structures: An Overview. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2004/09//Sep/Oct2004 VL - 41 IS - 5 M3 - Article SP - 978 EP - 985 SN - 00218669 AB - High-speed vehicle structures have been of interest since the earliest days of aviation. Every since that fateful day at Kittyhawk, North Carolina, the quest for speed has been inseparable from the world of aviation. Some of the advances in structures technology are explored specifically for hypersonic flight vehicle structures during the first century of aviation. In particular, those advances pointing toward the next century hypersonic vehicles are examined. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRUCTURAL design KW - AERONAUTICS KW - HIGH-speed aeronautics KW - AIRPLANES -- Design & construction KW - SUPERSONIC aerodynamics KW - P-40 (Fighter plane) N1 - Accession Number: 14939718; Clay, Christopher L. 1,2,3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Deputy Chief, Aeronautical Systems Sector 3: Senior Member, AIAA; Source Info: Sep/Oct2004, Vol. 41 Issue 5, p978; Subject Term: STRUCTURAL design; Subject Term: AERONAUTICS; Subject Term: HIGH-speed aeronautics; Subject Term: AIRPLANES -- Design & construction; Subject Term: SUPERSONIC aerodynamics; Subject Term: P-40 (Fighter plane); NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; Number of Pages: 8p; Illustrations: 9 Black and White Photographs, 1 Diagram, 3 Charts, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14939718&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pettit, Chris L. T1 - Uncertainty Quantification in Aeroelasticity: Recent Results and Research Challenges. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2004/09//Sep/Oct2004 VL - 41 IS - 5 M3 - Article SP - 1217 EP - 1229 SN - 00218669 AB - Static and dynamic aeroelasticity considerations are a particularly important component of airframe design because they often control safety and performance. Consequently, the impact of uncertainty on aeroelastic response prediction has begun to receive substantial attention in the research literature. In this paper, general sources of uncertainty that complicate airframe design and testing are briefly described. Recent applications of uncertainty quantification to various aeroelastic problems, for example, flutter flight testing, prediction of limit-cycle oscillations, and design optimization with aeroelastic constraints, are reviewed with an emphasis on new physical insights and promising paths toward improved design methods that have resulted from these studies. Several challenges and needs are explored to suggest future steps that will enable practical application of uncertainty quantification in aeroelasticity design and certification. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - AERODYNAMICS KW - AIRFRAMES KW - AIRPLANES -- Design & construction KW - STRUCTURAL frames N1 - Accession Number: 14939744; Pettit, Chris L. 1,2,3; Email Address: chris.pettit@wpafb.af.mil; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542 2: Senior Research Aerospace Engineer, AFRL/VASD, 2130 Eighth Street 3: Senior Member, AIAA; Source Info: Sep/Oct2004, Vol. 41 Issue 5, p1217; Subject Term: AEROELASTICITY; Subject Term: AERODYNAMICS; Subject Term: AIRFRAMES; Subject Term: AIRPLANES -- Design & construction; Subject Term: STRUCTURAL frames; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 238130 Framing Contractors; NAICS/Industry Codes: 238350 Finish Carpentry Contractors; Number of Pages: 13p; Illustrations: 1 Black and White Photograph, 4 Diagrams, 8 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14939744&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Subrata AU - Gaitonde, Datta T1 - Radio frequency induced ionized collisional flow model for application at atmospheric pressures. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/09//9/1/2004 VL - 96 IS - 5 M3 - Article SP - 2476 EP - 2481 PB - American Institute of Physics SN - 00218979 AB - We present the development and application of a versatile finite-element method to discretize direct current and radio frequency (rf) induced plasma-sheath dynamics, using multifluid equations. For the former, argon gas is assumed, and the solution is verified by comparison with a theoretical model obtained from the literature. For rf discharges, partially ionized helium gas is considered between two electrodes coated in a dielectric material. The computed solutions for charge densities, the ion velocity and the neutral gas density and crossflow distributions show expected trends. Specifically, ion and electron number densities at the peak discharge current are compared with published numerical results. The derived electric field is utilized with a simple phenomenological model applicable to the transverse velocity in a one-dimensional situation to predict the anticipated hump in the near wall profile. The next step of extending the model, through future work, to two dimensions and for polyphase supply as implemented in realistic configurations is greatly facilitated by the generality of the chosen finite-element method. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATMOSPHERIC pressure KW - RADIO frequency KW - FINITE element method KW - ARGON KW - PLASMA sheaths KW - ELECTRIC fields KW - CHARGE density waves N1 - Accession Number: 14310138; Roy, Subrata 1; Email Address: sroy@kettering.edu Gaitonde, Datta 2; Affiliation: 1: Computational Plasma Dynamics Laboratory, Mechanical Engineering, Kettering University, Flint, Michigan 48504 2: Computational Sciences Branch, Air Vehicles Directorate, Air Force Research Laboratory, Wright Patterson AFB, Ohio 45433; Source Info: 9/1/2004, Vol. 96 Issue 5, p2476; Subject Term: ATMOSPHERIC pressure; Subject Term: RADIO frequency; Subject Term: FINITE element method; Subject Term: ARGON; Subject Term: PLASMA sheaths; Subject Term: ELECTRIC fields; Subject Term: CHARGE density waves; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 6p; Illustrations: 2 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1063/1.1778474 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14310138&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H. J. AU - F. Szmulowicz AU - Brown, G. J. AU - Mahalingam, K. T1 - Band gap tuning of InAs/GaSb type-II superlattices for mid-infrared detection. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/09//9/1/2004 VL - 96 IS - 5 M3 - Article SP - 2580 EP - 2585 PB - American Institute of Physics SN - 00218979 AB - The superlattice (SL) of a 40 period InAs/GaSb SL structure were varied around the 20.5 Å InAs/24 Å GaSb design in order to produce a device with an optimum mid-infrared photoresponse and a sharpest photoresponse cutoff. The samples for this study were grown by molecular beam epitaxy with precisely calibrated growth rates. Varying individual layer width around the nominal design, we were able to systematically change the photoresponse cutoff wavelength between 4.36 to 3.45 um by decreasing the InAs width from 23.5 to 17.5 Å, and between 4.55 to 4.03 μm by increasing the GaSb width from 18 to 27 Å. Therefore, the cutoff changes faster with decreasing InAs rather than increasing GaSb width. However, increasing GaSb width more effectively enhances the sharpness of photoresponse near band edge. The effect of design parameters on the photoresponse cutoff and other effects are explained by a nonperturbative, modified envelope function approximation (EFA) calculation that includes the interface coupling of heavy, light, and spin-orbit holes resulting from the in-plane asymmetry at InAs/GaSb interfaces. Using the modified EFA model, the SL design at fixed period of 44.5 Å was adjusted for the optimum performance. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDIUM arsenide KW - GALLIUM (Metal) KW - SUPERLATTICES KW - INFRARED detectors KW - MOLECULAR beam epitaxy KW - CRYSTAL growth N1 - Accession Number: 14310126; Haugan, H. J. 1; Email Address: heather.haugan@wpafb.afrl.mil F. Szmulowicz 1 Brown, G. J. 1 Mahalingam, K. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433-7707; Source Info: 9/1/2004, Vol. 96 Issue 5, p2580; Subject Term: INDIUM arsenide; Subject Term: GALLIUM (Metal); Subject Term: SUPERLATTICES; Subject Term: INFRARED detectors; Subject Term: MOLECULAR beam epitaxy; Subject Term: CRYSTAL growth; Number of Pages: 6p; Illustrations: 1 Black and White Photograph, 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.1776321 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14310126&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rapoport, Amnon AU - Stein, William E. AU - Parco, James E. AU - Seale, Darryl A. T1 - Equilibrium play in single-server queues with endogenously determined arrival times JO - Journal of Economic Behavior & Organization JF - Journal of Economic Behavior & Organization Y1 - 2004/09// VL - 55 IS - 1 M3 - Article SP - 67 EP - 91 SN - 01672681 AB - We study a class of queueing problems with endogenous arrival times formulated as non-cooperative n-person games in normal form. With multiple equilibria in pure strategies, these queueing games give rise to problems of tacit coordination. We first describe a Markov chain algorithm used to compute the symmetric mixed-strategy equilibrium solution, and then report the results of an experimental study of a large-scale (n=20) queueing game with fixed service time, FIFO queue discipline, and no early arrivals. Our results show consistent and replicable patterns of arrival that provide strong support for mixed-strategy equilibrium play on the aggregate but not individual level. [Copyright &y& Elsevier] AB - Copyright of Journal of Economic Behavior & Organization is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUEUING theory KW - STRATEGIC planning KW - EQUILIBRIUM KW - GAME theory KW - Endogenous arrival times KW - Experimentation KW - Mixed-strategy equilibrium KW - Queueing N1 - Accession Number: 14249169; Rapoport, Amnon 1,2; Email Address: amnon@u.arizona.edu Stein, William E. 3 Parco, James E. 4 Seale, Darryl A. 5; Affiliation: 1: Department of Management and Policy, McClelland Hall 405, University of Arizona, Tucson, AZ 85721, USA 2: Hong Kong University of Science and Technology, Hong Kong 3: Texas A&M University, USA 4: United States Air Force Academy, USA 5: University of Nevada, Las Vegas, NV, USA; Source Info: Sep2004, Vol. 55 Issue 1, p67; Subject Term: QUEUING theory; Subject Term: STRATEGIC planning; Subject Term: EQUILIBRIUM; Subject Term: GAME theory; Author-Supplied Keyword: Endogenous arrival times; Author-Supplied Keyword: Experimentation; Author-Supplied Keyword: Mixed-strategy equilibrium; Author-Supplied Keyword: Queueing; Number of Pages: 25p; Document Type: Article L3 - 10.1016/j.jebo.2003.07.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14249169&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Neelon, Michael F. AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - The Isoazimuthal Perception of Sounds across Distance: A Preliminary Investigation into the Location of the Audio Egocenter. JO - Journal of Neuroscience JF - Journal of Neuroscience Y1 - 2004/09//9/1/2004 VL - 24 IS - 35 M3 - Article SP - 7640 EP - 7647 SN - 02706474 AB - Evidence indicates that both visual and auditory input may be represented in multiple frames of reference at different processing stages in the nervous system. Most models, however, have assumed that unimodal auditory input is first encoded in a head-centered reference frame. The present work tested this conjecture by measuring the subjective auditory egocenter in six blindfolded listeners who were asked to match the perceived azimuths of sounds that were alternately played between a surrounding arc of far-field speakers and a hand-held point source located three different distances from the head. If unimodal auditory representation is head centered, then "isoazimuth" lines fitted to the matching estimates across distance should intersect near the midpoint of the interaural axis. For frontomedially arranged speakers, isoazimuth lines instead converged in front of the interaural axis for all listeners, often at a point between the two eyes. As far-field sources moved outside the visual field, however, the auditory egocenter location implied by the intersection of the isoazimuth lines retreated toward or even behind the interaural axis. Physiological and behavioral evidence is used to explain this change from an eye-centered to a head-centered auditory egocenter as a function of source laterality. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Neuroscience is the property of Society for Neuroscience and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NERVOUS system KW - VISION KW - HEARING KW - EYE KW - SOUND KW - auditory KW - cortex KW - egocenter KW - localization KW - multisensory KW - visual N1 - Accession Number: 14449102; Neelon, Michael F. 1; Email Address: mfneelon@wisc.edu Brungart, Douglas S. 2 Simpson, Brian D. 2; Affiliation: 1: University of Wisconsin Medical School, Madison, Wisconsin 53705 2: Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433-7901; Source Info: 9/1/2004, Vol. 24 Issue 35, p7640; Subject Term: NERVOUS system; Subject Term: VISION; Subject Term: HEARING; Subject Term: EYE; Subject Term: SOUND; Author-Supplied Keyword: auditory; Author-Supplied Keyword: cortex; Author-Supplied Keyword: egocenter; Author-Supplied Keyword: localization; Author-Supplied Keyword: multisensory; Author-Supplied Keyword: visual; Number of Pages: 8p; Illustrations: 1 Diagram, 2 Charts, 4 Graphs; Document Type: Article L3 - 10.1523/JNEUROSCI.0737-04.2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14449102&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boakye, Emmanuel E. AU - Mah, Tail AU - Cooke, Charles M. AU - Keller, Kristin AU - Kerans, Ronald J. T1 - Initial Assessment of the Weavability of Monazite-Coated Oxide Fibers. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2004/09// VL - 87 IS - 9 M3 - Article SP - 1775 EP - 1778 PB - Wiley-Blackwell SN - 00027820 AB - A preliminary assessment was made of the viability of weaving cloth from LaPO4 (monazite) coated Nextel™ 720 and Nextel 610 fiber tows. As part of the assessment, the effect of coating speed on coating uniformity was evaluated. The results enabled the selection of a higher coating speed (6 cm-s-1) for the coating and sizing of Nextel 610 tow. Sizing the coated tow with polyvinyl alcohol/polyethylene glycol dissolved in water was found to be effective. The coatings remained on the fibers, and the fiber strength was retained following the weaving process. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONAZITE KW - SURFACE coatings KW - ALUMINUM oxide KW - MULLITE KW - POLYVINYL alcohol KW - CERAMICS N1 - Accession Number: 14497173; Boakye, Emmanuel E. 1 Mah, Tail 1 Cooke, Charles M. 1 Keller, Kristin 1 Kerans, Ronald J. 2; Affiliation: 1: UES Inc., Dayton-Xenia Rd., Dayton, Ohio 45432 2: Air Force Research Laboratory, Materials Directorate, Wright-Patterson AFE, Ohio 45433; Source Info: Sep2004, Vol. 87 Issue 9, p1775; Subject Term: MONAZITE; Subject Term: SURFACE coatings; Subject Term: ALUMINUM oxide; Subject Term: MULLITE; Subject Term: POLYVINYL alcohol; Subject Term: CERAMICS; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14497173&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Iarve, E.V. AU - Mollenhauer, D. AU - Kim, R. T1 - Mesh-Independent Modeling and Moiré Interferometry Studies of Damage Accumulation in Open-Hole Composite Laminates. JO - Mechanics of Composite Materials JF - Mechanics of Composite Materials Y1 - 2004/09//Sep/Oct2004 VL - 40 IS - 5 M3 - Article SP - 419 EP - 426 PB - Springer Science & Business Media B.V. SN - 01915665 AB - A three-dimensional ply-level modeling of multiple matrix cracking near an open hole in a quasi-isotropic composite laminate was performed. A mesh-independent displacement discontinuity modeling method based on higher-order shape functions was constructed for this purpose. The mesh configuration is dictated by the boundaries of a specimen, such as the presence of a hole, whereas the matrix cracking surfaces are aligned with the fiber direction in a given ply. The surface of the displacement jump associated with matrix cracking was defined in terms of the domain Heaviside function approximated by using higher-order polynomial B-splines. Several matrix cracks in each ply of a [0/45/90/–45]s composite were modeled, and their effect on the fiber-direction stress magnitude in the 0° ply was examined. Up to 35% relaxation of the fiber-direction strain amplitude due to matrix cracking (splitting) in the 0° ply was predicted. The moir? interferometry was used to experimentally determine the strain and displacement fields in the surface layer of the same composite, previously prestressed beyond the damage initiation load. A good correlation between the experimental data and the stress redistribution predicted by the mesh-independent damage modeling technique was observed. [ABSTRACT FROM AUTHOR] AB - Copyright of Mechanics of Composite Materials is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATRICES KW - JUMPING KW - HARMONIC drives KW - POLYNOMIALS KW - APPROXIMATION theory KW - POWER transmission KW - composite laminates KW - moiré interferometry KW - moiré interferometry KW - numerical B-spline analysis KW - strength N1 - Accession Number: 14973487; Iarve, E.V. 1 Mollenhauer, D. 2 Kim, R. 1; Affiliation: 1: University of Dayton Research Institute, 300 College Park Ave., Dayton, OH 45469–0168 2: U. S. Air Force Research Laboratory, AFRL/MLBC, Wright-Patterson AFB, OH 45433–7750; Source Info: Sep/Oct2004, Vol. 40 Issue 5, p419; Subject Term: MATRICES; Subject Term: JUMPING; Subject Term: HARMONIC drives; Subject Term: POLYNOMIALS; Subject Term: APPROXIMATION theory; Subject Term: POWER transmission; Author-Supplied Keyword: composite laminates; Author-Supplied Keyword: moiré interferometry; Author-Supplied Keyword: moiré interferometry; Author-Supplied Keyword: numerical B-spline analysis; Author-Supplied Keyword: strength; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14973487&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Voevodin, Valeriy G. AU - Voevodina, Olga V. AU - Bereznaya, Svetlana A. AU - Korotchenko, Zoya V. AU - Morozov, Aleksander N. AU - Sarkisov, Sergey Yu. AU - Fernelius, Nils C. AU - Goldstein, Jonathan T. T1 - Large single crystals of gallium selenide: growing, doping by In and characterization JO - Optical Materials JF - Optical Materials Y1 - 2004/09// VL - 26 IS - 4 M3 - Article SP - 495 EP - 499 SN - 09253467 AB - Gallium selenide is a material with great potential for nonlinear optical applications, due to its many attractive properties, including a broad low-loss transmittance (from 0.65 to 18 μm) and a large nonlinear coefficient. However, its current application is limited due to difficulties with its growth, and poor mechanical properties. Our current research has a threefold purpose. First, this work is intended to investigate the feasability of growing large, optical quality single crystal boules of GaSe; second, to investigate the impact of isovalent indium doping on the mechanical, electrophysical, and optical properties of GaSe, and third, to determine the concentration of In which is optimal for purposes of facilitating the practical implementation of GaSe in nonlinear devices. [Copyright &y& Elsevier] AB - Copyright of Optical Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDIUM KW - CRYSTALS KW - GALLIUM (Metal) KW - DOPING in sports N1 - Accession Number: 14140668; Voevodin, Valeriy G. 1 Voevodina, Olga V. 1 Bereznaya, Svetlana A. 1 Korotchenko, Zoya V. 1 Morozov, Aleksander N. 1 Sarkisov, Sergey Yu. 1 Fernelius, Nils C. 2 Goldstein, Jonathan T. 2; Affiliation: 1: Siberian Physico-Technical Institute, 1, Novosobornaya Square, 634050 Tomsk, Russia 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLPSO Wright-Patterson Air Force Base, Dayton, OH 45433-7707, USA; Source Info: Sep2004, Vol. 26 Issue 4, p495; Subject Term: INDIUM; Subject Term: CRYSTALS; Subject Term: GALLIUM (Metal); Subject Term: DOPING in sports; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.optmat.2003.09.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14140668&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Denman, Craig A. AU - Hillman, Paul D. AU - Moore, Gerald T. AU - Telle, John M. AU - Drummond, Jack D. AU - Tuffli, Andrea L. T1 - 20 W CW 589 nm sodium beacon excitation source for adaptive optical telescope applications JO - Optical Materials JF - Optical Materials Y1 - 2004/09// VL - 26 IS - 4 M3 - Article SP - 507 EP - 513 SN - 09253467 AB - Operation of a doubly resonant sum-frequency generation (SFG) ring containing a lithium triborate (LBO) crystal has been demonstrated. It is pumped by 1.064 and 1.319 μm Nd:YAG injection-locked ring lasers and produces a 20 W, diffraction-limited, single-frequency, continuous wave, 589 nm beam. Nearly 60% conversion of pump laser power is obtained. Such a device produced a guidestar in the mesospheric sodium layer that can provide improved sky coverage for adaptive optical telescope applications. “First light” on the sky for the laser source was 21 November 2002 at the Starfire Optical Range, Kirtland AFB, New Mexico. [Copyright &y& Elsevier] AB - Copyright of Optical Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR optics KW - OPTOELECTRONIC devices KW - LIGHT amplifiers KW - Single-frequency lasers KW - Sum-frequency generation N1 - Accession Number: 14140670; Denman, Craig A.; Email Address: craig.denman@kirtland.af.mil Hillman, Paul D. 1 Moore, Gerald T. 1 Telle, John M. 1; Email Address: john.telle@kirtland.af.mil Drummond, Jack D. 1 Tuffli, Andrea L. 1; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117, Mexico; Source Info: Sep2004, Vol. 26 Issue 4, p507; Subject Term: NONLINEAR optics; Subject Term: OPTOELECTRONIC devices; Subject Term: LIGHT amplifiers; Author-Supplied Keyword: Single-frequency lasers; Author-Supplied Keyword: Sum-frequency generation; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.optmat.2003.09.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14140670&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jones, M.C. AU - Neculaes, V.B. AU - Gilgenbach, R.M. AU - White, W.M. AU - Lopez, M.R. AU - Lau, Y.Y. AU - Spencer, T.A. AU - Price, D. T1 - Projection ablation lithography cathode for high-current, relativistic magnetron. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2004/09// VL - 75 IS - 9 M3 - Article SP - 2976 EP - 2980 PB - American Institute of Physics SN - 00346748 AB - Initial results are presented of an innovative cathode operating in a relativistic magnetron powered by an accelerator with parameters: -0.3 MV, 1–10 kA, and 0.5 μs pulse length. This cathode is fabricated by ablating a pattern on the cathode using a KrF laser. This projection ablation lithography (PAL) cathode has demonstrated fast current turn-on and microwave startup times have decreased from an average of 193 to 118 ns. The pulselength of 1 GHz microwave oscillation has increased from a 144 ns average to 217 ns. With these improvements in microwave startup and pulse length, the microwave power has approximately remained the same compared to the previously used cloth cathodes. A new triple-azimuthal emission region is tested as means of prebunching the electrons (“cathode priming”) into the three spokes desired for pi mode operation in a six-cavity magnetron. The Tri-PAL cathode priming results in the fastest startup and highest efficiency of relativistic magnetron microwave generation. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LITHOGRAPHY KW - EQUIPMENT & supplies KW - ABLATION (Aerothermodynamics) KW - ELECTRIC apparatus & appliances KW - SCIENTIFIC apparatus & instruments KW - RESEARCH -- Equipment & supplies KW - PHYSICS instruments N1 - Accession Number: 14803233; Jones, M.C. 1 Neculaes, V.B. 1 Gilgenbach, R.M. 1; Email Address: rongilg@umich.edu White, W.M. 1 Lopez, M.R. 1 Lau, Y.Y. 1 Spencer, T.A. 2 Price, D. 3; Affiliation: 1: Nuclear Engineering and Radiological Sciences Department, Intense Energy Beam Interaction Lab, University of Michigan, Ann Arbor, Michigan 48109-2104 2: Air Force Research Laboratory, Phillips Research Lab, Kirtland AFB, New Mexico 3: Titan Corporation; Source Info: Sep2004, Vol. 75 Issue 9, p2976; Subject Term: LITHOGRAPHY; Subject Term: EQUIPMENT & supplies; Subject Term: ABLATION (Aerothermodynamics); Subject Term: ELECTRIC apparatus & appliances; Subject Term: SCIENTIFIC apparatus & instruments; Subject Term: RESEARCH -- Equipment & supplies; Subject Term: PHYSICS instruments; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; NAICS/Industry Codes: 335990 All other electrical equipment and component manufacturing; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 811412 Appliance Repair and Maintenance; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 323119 Other printing; NAICS/Industry Codes: 417930 Professional machinery, equipment and supplies merchant wholesalers; Number of Pages: 5p; Document Type: Article L3 - 10.1063/1.1784561 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14803233&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shaw, L. AU - Luo, H. AU - Villegas, J. AU - Miracle, D. T1 - Effects of internal strains on hardness of nanocrystalline Al–Fe–Cr–Ti alloys JO - Scripta Materialia JF - Scripta Materialia Y1 - 2004/09// VL - 51 IS - 5 M3 - Article SP - 449 EP - 453 SN - 13596462 AB - The effects of internal strain on the microhardness of nanocrystalline metals were investigated using an Al93Fe3Ti2Cr2 alloy prepared via mechanical alloying. The results clearly indicate that the hardness of the nanocrystalline Al alloy decreases with decreasing the internal strain at a given grain size, even though dislocation activity within the grain interior is absent in all cases. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - ELASTIC solids KW - ALUMINUM alloys KW - LIGHT metals KW - Aluminum alloy KW - Internal strains KW - Microhardness KW - Nanostructured materials N1 - Accession Number: 13468735; Shaw, L. 1; Email Address: lshaw@mail.ims.uconn.edu Luo, H. 1 Villegas, J. 1 Miracle, D. 2; Affiliation: 1: Department of Metallurgy and Materials Engineering, University of Connecticut, U-3136, Storrs, CT 06269, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH, USA; Source Info: Sep2004, Vol. 51 Issue 5, p449; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ELASTIC solids; Subject Term: ALUMINUM alloys; Subject Term: LIGHT metals; Author-Supplied Keyword: Aluminum alloy; Author-Supplied Keyword: Internal strains; Author-Supplied Keyword: Microhardness; Author-Supplied Keyword: Nanostructured materials; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.scriptamat.2003.12.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13468735&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Michels, James H. AU - Himed, Braham AU - Rangaswamy, Muralidhar T1 - Robust STAP detection in a dense signal airborne radar environment JO - Signal Processing JF - Signal Processing Y1 - 2004/09// VL - 84 IS - 9 M3 - Article SP - 1625 EP - 1636 SN - 01651684 AB - This paper presents the performance of several space–time adaptive processing (STAP) detection methods in a dense signal environment. These include the normalized parametric adaptive matched filter (N-PAMF), the joint domain localized (JDL), and a variant of JDL referred to as the normalized JDL (NJDL). Issues considered here include robust detection with respect to signal contamination of training data and efficient estimation procedures with limited training data. The paper also introduces the innovations power sorting (IPS) pre-processing procedure for representative training data selection. Performance analyses are carried out with measured data from the Multichannel Airborne Radar Measurement (MCARM) program. [Copyright &y& Elsevier] AB - Copyright of Signal Processing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DETECTORS KW - ELECTRONIC systems KW - RADAR KW - TRAINING KW - Dense signal problem KW - Innovations power sorting KW - JDL KW - Model-based detection KW - N-PAMF KW - NJDL KW - Outliers KW - PAMF KW - Reduced training data selection KW - Robust STAP N1 - Accession Number: 14035519; Michels, James H.; Email Address: michelsj@rl.af.mil Himed, Braham 1 Rangaswamy, Muralidhar 1; Affiliation: 1: Air Force Research Laboratory, AFRL/SNRT, 26 Electronic Parkway, Rome, NY 13441, USA; Source Info: Sep2004, Vol. 84 Issue 9, p1625; Subject Term: DETECTORS; Subject Term: ELECTRONIC systems; Subject Term: RADAR; Subject Term: TRAINING; Author-Supplied Keyword: Dense signal problem; Author-Supplied Keyword: Innovations power sorting; Author-Supplied Keyword: JDL; Author-Supplied Keyword: Model-based detection; Author-Supplied Keyword: N-PAMF; Author-Supplied Keyword: NJDL; Author-Supplied Keyword: Outliers; Author-Supplied Keyword: PAMF; Author-Supplied Keyword: Reduced training data selection; Author-Supplied Keyword: Robust STAP; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.sigpro.2004.05.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14035519&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rangaswamy, Muralidhar AU - Lin, Freeman C. AU - Gerlach, Karl R. T1 - Robust adaptive signal processing methods for heterogeneous radar clutter scenarios JO - Signal Processing JF - Signal Processing Y1 - 2004/09// VL - 84 IS - 9 M3 - Article SP - 1653 EP - 1665 SN - 01651684 AB - This paper addresses the problem of radar target detection in severely heterogeneous clutter environments. Specifically, we present the performance of the normalized matched filter test in a background of disturbance consisting of clutter having a covariance matrix with known structure and unknown scaling plus background white Gaussian noise. It is shown that when the clutter covariance matrix is low rank, the (LRNMF) test retains invariance with respect to the unknown scaling as well as the background noise level and has an approximately constant false alarm rate (CFAR). Performance of the test depends only upon the number of elements, the number of pulses processed in a coherent processing interval, and the rank of the clutter covariance matrix. Analytical expressions for calculating the false alarm and detection probabilities are presented. Performance of the method is shown to degrade with increasing clutter rank especially for low false alarm rates. An adaptive version of the test (LRNAMF) is developed and its performance is studied with simulated data from the KASSPER program. Results pertaining to sample support for subspace estimation, CFAR, and detection performance are presented. Target contamination of training data has a deleterious impact on the performance of the test. Therefore, a technique known as self-censoring reiterative fast maximum likelihood/adaptive power residue (SCRFML/APR) is developed to treat this problem and its performance is discussed. The SCRFML/APR method is used to estimate the unknown covariance matrix in the presence of outliers. This covariance matrix estimate can then be used in the LRNAMF or any other eigen-based adaptive processing technique. [Copyright &y& Elsevier] AB - Copyright of Signal Processing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR KW - ELECTRONIC systems KW - DETECTORS KW - ANALYSIS of covariance KW - Pd KW - Pfa KW - CFAR KW - Invariance KW - KASSPER KW - Low rank KW - LRNAMF KW - LRNMF KW - Outlier KW - RLSTAP KW - SCRFML/APR KW - SCRFML/GIP KW - SNR KW - STAP N1 - Accession Number: 14035521; Rangaswamy, Muralidhar 1; Email Address: Muralidhar.Rangaswamy@hanscom.af.mil Lin, Freeman C. 2 Gerlach, Karl R. 3; Affiliation: 1: Air Force Research Laboratory/SNHE, 80 Scott Drive, Hanscom Air Force Base, MA 01731-2909, USA 2: ARCON Corporation, Waltham, MA, USA 3: Naval Research Laboratory, Washington, DC, USA; Source Info: Sep2004, Vol. 84 Issue 9, p1653; Subject Term: RADAR; Subject Term: ELECTRONIC systems; Subject Term: DETECTORS; Subject Term: ANALYSIS of covariance; Author-Supplied Keyword: Pd; Author-Supplied Keyword: Pfa; Author-Supplied Keyword: CFAR; Author-Supplied Keyword: Invariance; Author-Supplied Keyword: KASSPER; Author-Supplied Keyword: Low rank; Author-Supplied Keyword: LRNAMF; Author-Supplied Keyword: LRNMF; Author-Supplied Keyword: Outlier; Author-Supplied Keyword: RLSTAP; Author-Supplied Keyword: SCRFML/APR; Author-Supplied Keyword: SCRFML/GIP; Author-Supplied Keyword: SNR; Author-Supplied Keyword: STAP; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.sigpro.2004.05.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14035521&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Robertson, Mark A. T1 - Temporal filtering for restoration of wavelet-compressed motion imagery JO - Signal Processing: Image Communication JF - Signal Processing: Image Communication Y1 - 2004/09// VL - 19 IS - 8 M3 - Article SP - 701 EP - 721 SN - 09235965 AB - Temporal filtering of motion imagery can alleviate the effects of noise and artifacts in the data by incorporating observations of the imagery data from several distinct frames. If the noise that is expected to occur in the data is well-modeled by independent and identically distributed (IID) Gaussian noise, then straightforward algorithms can be designed that filter along motion trajectories in an optimal fashion. This paper addresses the restoration of motion imagery that have been compressed by scalar quantization of the data''s discrete wavelet transform coefficients. Noise due to compression in such situations is neither independent nor identically distributed, and thus straightforward filters designed for the IID case are suboptimal. This paper provides a statistical characterization of the quantization error and shows how the improved noise modeling can be used in temporal filtering to improve visual quality of the decompressed motion imagery. Example restoration results include the cases where the data have been compressed by quantization of two- and three-dimensional wavelet transform coefficients. Although not developed in this work, the noise model is also directly applicable to other restoration algorithms that incorporate information from other time instants, such as super-resolution. [Copyright &y& Elsevier] AB - Copyright of Signal Processing: Image Communication is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FILTERS & filtration KW - MOTION KW - RANDOM noise theory KW - STOCHASTIC information theory KW - Compression error KW - Discrete wavelet transform KW - Motion imagery restoration KW - Quantization noise KW - Temporal filtering N1 - Accession Number: 14580958; Robertson, Mark A. 1; Affiliation: 1: Air Force Research Laboratory/IFEC, 525 Brooks Rd., Rome, NY 13441-4505, USA; Source Info: Sep2004, Vol. 19 Issue 8, p701; Subject Term: FILTERS & filtration; Subject Term: MOTION; Subject Term: RANDOM noise theory; Subject Term: STOCHASTIC information theory; Author-Supplied Keyword: Compression error; Author-Supplied Keyword: Discrete wavelet transform; Author-Supplied Keyword: Motion imagery restoration; Author-Supplied Keyword: Quantization noise; Author-Supplied Keyword: Temporal filtering; Number of Pages: 21p; Document Type: Article L3 - 10.1016/j.image.2004.06.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14580958&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gunzelmann, Glenn AU - Anderson, John R. AU - Douglass, Scott T1 - Orientation Tasks with Multiple Views of Space: Strategies and Performance. JO - Spatial Cognition & Computation JF - Spatial Cognition & Computation Y1 - 2004/09// VL - 4 IS - 3 M3 - Article SP - 207 EP - 253 SN - 13875868 AB - Two experiments examine how participants vary in their approach lo solving an orientation task. Verbal reports from untrained participants in a pilot study revealed that some participants used a strategy based on mental imagery, while others used verbal descriptions to do the task. The two experiments presented here involved training participants to perform the orientation task using one of these strategies. Participants' performance. measured by response time and eye movements, differed as a function of strategy. An ACT-R model of the task that uses the strategies provides a validation of the proposed mechanisms, producing a close fit to both the response time and eye movement data. The model's success is achieved, in part, by performing all aspects of the task, from processing the information on the screen to making responses. Overall, the results indicate that strategic variability is an important feature of human performance on such tasks. [ABSTRACT FROM AUTHOR] AB - Copyright of Spatial Cognition & Computation is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BRAIN KW - COGNITION KW - REASONING (Logic) KW - EYE -- Movements KW - IMAGERY (Psychology) KW - ACT-R KW - computational model KW - eye movements KW - Orientation KW - spatial reasoning KW - strategy N1 - Accession Number: 15350390; Gunzelmann, Glenn 1; Email Address: glenn.gunzelmann@mesa.afmc.af.mil Anderson, John R. 2 Douglass, Scott 2; Affiliation: 1: National Research Council, Air Force Research Laboratory 2: Carnegie Mellon University; Source Info: 2004, Vol. 4 Issue 3, p207; Subject Term: BRAIN; Subject Term: COGNITION; Subject Term: REASONING (Logic); Subject Term: EYE -- Movements; Subject Term: IMAGERY (Psychology); Author-Supplied Keyword: ACT-R; Author-Supplied Keyword: computational model; Author-Supplied Keyword: eye movements; Author-Supplied Keyword: Orientation; Author-Supplied Keyword: spatial reasoning; Author-Supplied Keyword: strategy; Number of Pages: 47p; Illustrations: 4 Diagrams, 3 Charts, 11 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15350390&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, J. T1 - Energy-conserving Galerkin representation of clamped plates under a moderately large deflection JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2004/08/23/ VL - 275 IS - 3-5 M3 - Article SP - 649 EP - 664 SN - 0022460X AB - In the moderately large deflection plate theory of von Karman and Chu–Herrmann, one can formulate dynamic equations of a thin plate by considering either the transverse and in-plane displacements, w–u–v formulation, or the transverse displacement and Airy function, w–F formulation. Previously, for a simply supported plate we have investigated the Hamiltonian property of modal equations obtained by the Galerkin representation under w–u–v and w–F formulations. We extend here such investigations to a rectangular clamped plate with similar conclusions. That is, the modal equations of w–F formulation are Hamiltonian and hence energy conserving at any order of truncation. On the other hand, the corresponding modal equations of w–u–v formulation do not conserve energy when only a small number of sine terms are included in the in-plane displacement expansions. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CATHODE ray tubes -- Deflection systems KW - FORCE & energy KW - SHEAR waves KW - ELASTIC waves N1 - Accession Number: 13475218; Lee, J. 1; Email Address: jon.lee@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory (VASS), Department of the Air force, Wright-Patterson AFB, OH 45433, USA; Source Info: Aug2004, Vol. 275 Issue 3-5, p649; Subject Term: CATHODE ray tubes -- Deflection systems; Subject Term: FORCE & energy; Subject Term: SHEAR waves; Subject Term: ELASTIC waves; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.jsv.2003.06.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13475218&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wong-Ng, W. AU - Cook, L.P. AU - Levin, I. AU - Suh, J. AU - Feenstra, R. AU - Haugan, T. AU - Barnes, P. T1 - Phase equilibria of Ba–R–Cu–O for coated conductor applications (R = lanthanides and Y) JO - Physica C JF - Physica C Y1 - 2004/08/22/ VL - 408-410 M3 - Article SP - 20 EP - 22 SN - 09214534 AB - Phase diagrams of the Ba2RCu3O6+x(R = Nd, Sm, Gd, Y, and Er) superconductors, prepared under 100 Pa O2 at 810 °C, reflect the trend of the lanthanide contraction. The single-phase regions of Ba2-x(Nd1+x-yR′y)Cu3O6+z for R′ = Gd, Y and Yb, and of Ba2-x(R1+x-yYy)Cu3O6+z for R = Eu and Gd were determined. Using these data, both flux-pinning and melting properties can be tailored and optimized. The presence of a low temperature melt during formation of the Ba2YCu3O6+x phase from barium fluoride amorphous precursor films is deemed important for producing quality tapes, and hence for rapid advancement of second-generation RABiTS/IBAD coated conductor technology. Our search for low melting liquid has focused on compositional vectors within the Ba, Y, CuǁO, F reciprocal system. [Copyright &y& Elsevier] AB - Copyright of Physica C is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTORS KW - GRAPHIC methods KW - TEMPERATURE KW - FLUIDS KW - Ba KW - Ba2RCu3O6+x KW - BaF2 process KW - CuǁO KW - F reciproal system KW - Phase diagrams KW - Y N1 - Accession Number: 14416161; Wong-Ng, W. 1; Email Address: winnie.wong-ng@nist.gov Cook, L.P. 1 Levin, I. 1 Suh, J. 1 Feenstra, R. 2 Haugan, T. 3 Barnes, P. 3; Affiliation: 1: Ceramics Division, Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Materials Building, Rm A-207, Gaithersburg, MD 20899, USA 2: Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN 37922, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Aug2004, Vol. 408-410, p20; Subject Term: SUPERCONDUCTORS; Subject Term: GRAPHIC methods; Subject Term: TEMPERATURE; Subject Term: FLUIDS; Author-Supplied Keyword: Ba; Author-Supplied Keyword: Ba2RCu3O6+x; Author-Supplied Keyword: BaF2 process; Author-Supplied Keyword: CuǁO; Author-Supplied Keyword: F reciproal system; Author-Supplied Keyword: Phase diagrams; Author-Supplied Keyword: Y; Number of Pages: 3p; Document Type: Article L3 - 10.1016/j.physc.2004.02.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14416161&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, T. AU - Barnes, P. N. AU - Wheeler, R. AU - Meisenkothen, F. AU - Sumption, M. T1 - Addition of nanoparticle dispersions to enhance flux pinning of the YBa2Cu3O7-x superconductor. JO - Nature JF - Nature Y1 - 2004/08/19/ VL - 430 IS - 7002 M3 - Article SP - 867 EP - 870 PB - Nature Publishing Group SN - 00280836 AB - Following the discovery of type-II high-temperature superconductors in 1986 (refs 1, 2), work has proceeded to develop these materials for power applications. One of the problems, however, has been that magnetic flux is not completely expelled, but rather is contained within magnetic fluxons, whose motion prevents larger supercurrents. It is known that the critical current of these materials can be enhanced by incorporating a high density of extended defects to act as pinning centres for the fluxons. YBa2Cu3O7 (YBCO or 123) is the most promising material for such applications at higher temperatures (liquid nitrogen). Pinning is optimized when the size of the defects approaches the superconducting coherence length (~ 2-4?nm for YBCO at temperatures =77?K) and when the areal number density of defects is of the order of (H/2) × 1011?cm-2, where H is the applied magnetic field in tesla. Such a high density has been difficult to achieve by material-processing methods that maintain a nanosize defect, except through irradiation. Here we report a method for achieving a dispersion of ~8-nm-sized nanoparticles in YBCO with a high number density, which increases the critical current (at 77?K) by a factor of two to three for high magnetic fields. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTORS KW - LIQUID nitrogen KW - NANOPARTICLES KW - MAGNETIC fields KW - ELECTRIC currents KW - HIGH temperatures N1 - Accession Number: 14162041; Haugan, T. 1; Email Address: timothy.haugan@wpafb.af.mil Barnes, P. N. 1 Wheeler, R. 1 Meisenkothen, F. 1 Sumption, M. 2; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7919, USA 2: Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210, USA; Source Info: 8/19/2004, Vol. 430 Issue 7002, p867; Subject Term: SUPERCONDUCTORS; Subject Term: LIQUID nitrogen; Subject Term: NANOPARTICLES; Subject Term: MAGNETIC fields; Subject Term: ELECTRIC currents; Subject Term: HIGH temperatures; Number of Pages: 4p; Document Type: Article L3 - 10.1038/nature02792 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14162041&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miracle, D.B. T1 - Efficient local packing in metallic glasses JO - Journal of Non-Crystalline Solids JF - Journal of Non-Crystalline Solids Y1 - 2004/08/15/ VL - 342 IS - 1-3 M3 - Article SP - 89 EP - 96 SN - 00223093 AB - A simple topological model in an earlier manuscript has provided additional support for the concept that efficient atomic packing is a fundamental principle in the formation of metallic glasses. In that work, an approach for defining and quantifying the local packing efficiency, P, was developed for solute-centered clusters that contained only solvent atoms in the first coordination shell. In the present work, this methodology is extended to allow quantification of P when more than one atomic species is present in the first coordination shell. This analysis is applied to several metallic glasses using published experimental data of partial coordination numbers. It is shown that packing in the first coordination shell is generally very efficient, even though the systems studied have significant differences in atomic species, compositions and relative atomic sizes. It is shown that packing is generally efficient around both solute and solvent atom species. Local packing efficiencies much less than unity are expected to be uncommon, since the global average packing efficiency is near unity and local packing efficiencies greater than unity are physically improbable. Deviations from efficiently packed configurations are discussed with respect to the local packing efficiencies in competing crystalline structures and with poorer glass forming ability. The values of P obtained for metallic glasses are essentially identical to the values obtained from a similar analysis of the competing crystalline structures. These results are consistent with frequent earlier reports of topological short range ordering in metallic glasses and with developments that have established the relationship between dense atomic packing and glass formation. [Copyright &y& Elsevier] AB - Copyright of Journal of Non-Crystalline Solids is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GLASS KW - ALLOYS KW - METALLURGY KW - ATOMS KW - M190 KW - S440 N1 - Accession Number: 14375276; Miracle, D.B. 1; Email Address: daniel.miracle@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, 2230 Tenth Street, Dayton, OH 45433-7817, USA; Source Info: Aug2004, Vol. 342 Issue 1-3, p89; Subject Term: GLASS; Subject Term: ALLOYS; Subject Term: METALLURGY; Subject Term: ATOMS; Author-Supplied Keyword: M190; Author-Supplied Keyword: S440; NAICS/Industry Codes: 327214 Glass manufacturing; NAICS/Industry Codes: 238150 Glass and Glazing Contractors; NAICS/Industry Codes: 416340 Paint, glass and wallpaper merchant wholesalers; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jnoncrysol.2004.05.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14375276&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Uchic, Michael D. AU - Dimiduk, Dennis M. AU - Florando, Jeffrey N. AU - Nix, William D. T1 - Sample Dimensions Influence Strength and Crystal Plasticity. JO - Science JF - Science Y1 - 2004/08/13/ VL - 305 IS - 5686 M3 - Article SP - 986 EP - 989 PB - American Association for the Advancement of Science SN - 00368075 AB - When a crystal deforms plastically, phenomena such as dislocation storage, multiplication, motion, pinning, and nucleation occur over the submicron-to-nanometer scale. Here we report measurements of plastic yielding for single crystals of micrometer-sized dimensions for three different types of metals. We find that within the tests, the overall sample dimensions artificially limit the length scales available for plastic processes. The results show dramatic size effects at surprisingly large sample dimensions. These results emphasize that at the micrometer scale, one must define both the external geometry and internal structure to characterize the strength of a material. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THICKNESS measurement KW - MICROMETERS (Instruments) KW - METALS KW - INORGANIC chemistry KW - CRYSTALS KW - CRYSTALLOGRAPHY N1 - Accession Number: 14246269; Uchic, Michael D. 1; Email Address: michael.uchic@wpafb.af.mil Dimiduk, Dennis M. 1 Florando, Jeffrey N. 2 Nix, William D. 3; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7817, USA. 2: Lawrence Livermore National Laboratory, Livermore, CA 94550, USA. 3: Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305-2205, USA.; Source Info: 8/13/2004, Vol. 305 Issue 5686, p986; Subject Term: THICKNESS measurement; Subject Term: MICROMETERS (Instruments); Subject Term: METALS; Subject Term: INORGANIC chemistry; Subject Term: CRYSTALS; Subject Term: CRYSTALLOGRAPHY; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 332216 Saw Blade and Handtool Manufacturing; NAICS/Industry Codes: 332210 Cutlery and hand tool manufacturing; Number of Pages: 4p; Document Type: Article; Full Text Word Count: 3030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14246269&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Amer, Maher S. AU - El-Ashry, Mostafa M. AU - Maguire, John F. T1 - Study of the hydrostatic pressure dependence of the Raman spectrum of single-walled carbon nanotubes and nanospheres. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2004/08/08/ VL - 121 IS - 6 M3 - Article SP - 2752 EP - 2757 PB - American Institute of Physics SN - 00219606 AB - We have investigated the behavior of single-walled carbon nanotubes and nanospheres (C60) under high hydrostatic pressure using Raman spectroscopy over the pressure range 0.2–10 GPa using a diamond anvil cell. Different liquid mixtures were used as pressure transmission fluids (PTF). Comparing the pressure dependence of the Raman peak positions for the nanotubes and the nanospheres in different PTF leads to the observation of a number of new phenomena. The observed shift in Raman peak position of both radial and tangential modes as a function of applied pressure and their dependence on the PTF chemical composition can be rationalized in terms of adsorption of molecular species from the of PTF on to the surface of the carbon nanotubes and/or nanospheres. The peak shifts are fully reversible and take place at a comparatively modest pressure (2–3 GPa) that is far below pressures that might be required to collapse the nanoparticles. Surface adsorption of molecular species on the nanotube or nanospheres provides a far more plausible rational for the observed phenomena than ideas based on the notion of tube collapse that have been put forward in the recent literature. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROSTATIC pressure KW - RAMAN spectroscopy KW - NANOTUBES KW - CARBON KW - HYDROSTATICS N1 - Accession Number: 13885966; Amer, Maher S. 1; Email Address: maher.amer@wright.edu El-Ashry, Mostafa M. 2 Maguire, John F. 2; Affiliation: 1: Department of Mechanical and Materials Engineering, Wright State University, Dayton, Ohio 45435 2: Materials & Manufacturing Direct., Air Force Research Laboratory, WPAFB, Ohio 45433; Source Info: 8/8/2004, Vol. 121 Issue 6, p2752; Subject Term: HYDROSTATIC pressure; Subject Term: RAMAN spectroscopy; Subject Term: NANOTUBES; Subject Term: CARBON; Subject Term: HYDROSTATICS; Number of Pages: 6p; Illustrations: 7 Graphs; Document Type: Article L3 - 10.1063/1.1768157 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13885966&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pakhomov, Andrei G. AU - Phinney, Amy AU - Ashmore, John AU - Walker, III, Kerfoot AU - Kolb, Juergen F. AU - Susumu Kono AU - Schoenbach, Karl H. AU - Murphy, Michael R. T1 - Characterization of the Cytotoxic Effect of High-Intensity, 10-ns Duration Electrical Pulses. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/08/02/Aug2004 Part 2 of 3 VL - 32 IS - 4 M3 - Article SP - 1579 EP - 1586 SN - 00933813 AB - Cytotoxic effects of 10-ns electrical pulses (EP, 50-380 kV/cm) were analyzed in cultured U937 cells (human lymphoma). Densities of live and dead cells were compared in over 500 samples at intervals from 0.5 to 48 h post exposure. EP trains of 1-20 pulses caused a minor, if any, decrease in cell survival: 24 h post exposure, the density of live cells typically dropped just 10-20% compared with unexposed parallel control. Within studied limits, this effect did not significantly depend on the EP number, voltage, or repetition rate. However, much longer EP trains could cause a sharp survival decline. The transition from plateau to profound cell killing occurred at about 150 pulses at 150 kV/cm, and at over 1000 pulses at 50 kV/cm. Artifact-free titer-mometry using a fiber optic microprobe established unequivocally that cell killing by extra-long EP trains was not a result of sample heating and has to be explained by other mechanisms. Testing for specific apoptotic cleavage of poly(ADP-ribose) polymerase at scattered time intervals (1-24 h) after EP exposure produced mostly negative results. Overall, 10-ns EP caused far weaker cytotoxic effect than it was reported earlier from experiments in other cell lines and mostly with longer pulses (60 and 300 ns). The survival curve shape (i.e., the shoulder followed by exponential decline) is also characteristic for other cytotoxic factors, such as low-LET ionizing radiation, thereby possibly pointing to common mechanisms or targets. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CELLS KW - APOPTOSIS KW - RADIATION KW - FIBER optics KW - ELECTRIC fields KW - PLASMA (Ionized gases) KW - Apoptosis KW - cytotoxicity KW - nanosecond electrical pulses N1 - Accession Number: 14778884; Pakhomov, Andrei G. 1; Email Address: pakhomov@swbell.net Phinney, Amy 2 Ashmore, John 2 Walker, III, Kerfoot 2 Kolb, Juergen F. 3; Email Address: jkolb@odu.edu Susumu Kono 4; Email Address: kohno@ariake-nct.ac.jp Schoenbach, Karl H. 3; Email Address: kschoenb@odu.edu Murphy, Michael R. 5; Email Address: michael.murphy@brooks.af.mil; Affiliation: 1: BioServices Corporation, U.S. Army Medical Research Detachment, and Air Force Research Laboratory, Human Effectiveness Directorate, Directed Energy Bioeffects Division, Brooks City- Base, San Antonio, TX 78235 USA. 2: McKesson BioServices Corporation, U.S. Army Medical Research Detachment, Brooks City-Base, San Antonio, TX 78235 USA. 3: Center for Bioelectrics, Old Dominion University, Norfolk, VA 23529 USA. 4: Ariake College of Technology, Fukuoka, 836 8585 Japan. 5: Air Force Research Laboratory, Human Effectiveness Directorate, Directed Energy Bioeffects Division, Brooks City-Base, San Antonio, TX 78235 USA.; Source Info: Aug2004 Part 2 of 3, Vol. 32 Issue 4, p1579; Subject Term: CELLS; Subject Term: APOPTOSIS; Subject Term: RADIATION; Subject Term: FIBER optics; Subject Term: ELECTRIC fields; Subject Term: PLASMA (Ionized gases); Author-Supplied Keyword: Apoptosis; Author-Supplied Keyword: cytotoxicity; Author-Supplied Keyword: nanosecond electrical pulses; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TPS.2004.831773 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14778884&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Seaman, Ronald L. AU - Jauchem, James R. T1 - Rat Electrocardiogram During Acute Exposure to Synchronized Bursts of Ultra-Wideband Pulses. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/08/02/Aug2004 Part 2 of 3 VL - 32 IS - 4 M3 - Article SP - 1644 EP - 1652 SN - 00933813 AB - Rats under ketamine anesthesia were exposed to bursts of ultrawideband (UWB) electromagnetic pulses at two different times during the electrocardiogram (ECG) to investigate possible changes in the ECG immediately after start of exposure. Animals were exposed to UWB pulses in a giga transverse electromagnetic cell (GTEM) with the body axis parallel to the direction of UWB propagation (k-polarization) or the magnetic field vector (H-polarization) in separate experiments. In both experiments, UWB pulses at animal thorax had 106 kV/m peak amplitude, 0.78-4L79 ns duration, and 170-186 ps rise time (mean values) and were applied in 25-ms bursts at 1-kHz repetition frequency. The bursts were synchronized to the artifact-free ECG and occurred either during the R-wave or the T-wave of the ECG. Time intervals measured and analyzed in the ECG were PR, the time between start of P-wave and start of R-wave; RT, the time between start of R-wave and apex of the T-wave; and QT, the time between start of R-wave and end of T-wave. The time between successive R-waves, RR, was also determined. No change attributable to UWB exposure was seen in any of these intervals within S cardiac cycles of the start of exposure. We conclude that UWB pulses applied during the R-wave or the T-wave do not acutely change timing of events in the cardiac cycle of the anesthetized rat. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROCARDIOGRAPHY KW - KETAMINE KW - ANESTHESIA KW - MAGNETIC fields KW - HEART beat KW - POLARIZATION (Electricity) N1 - Accession Number: 14778892; Seaman, Ronald L. 1; Email Address: ronald.seaman@brooks.af.mil Jauchem, James R. 2; Email Address: james.jauchem@brooks.af.mil; Affiliation: 1: McKesson BioServices, U.S. Army Medical Research Detachment (USAMRD), Wafter Reed Army Institute of Research (WRAIR), Brooks City-Base, TX 78235 USA. 2: U.S. Air Force Research Laboratory, Directed Energy Bioeffects Division, Radiofrequency Radiation Branch, Brooks City-Base, TX 78235 USA.; Source Info: Aug2004 Part 2 of 3, Vol. 32 Issue 4, p1644; Subject Term: ELECTROCARDIOGRAPHY; Subject Term: KETAMINE; Subject Term: ANESTHESIA; Subject Term: MAGNETIC fields; Subject Term: HEART beat; Subject Term: POLARIZATION (Electricity); Number of Pages: 10p; Document Type: Article L3 - 10.1109/TPS.2004.830959 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14778892&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Sukesh AU - Meyer, Terrence R. AU - Lucht, Robert P. AU - Belovich, Vincent M. AU - Corporan, Edwin AU - Gord, James R. T1 - Temperature and CO2 concentration measurements in the exhaust stream of a liquid-fueled combustor using dual-pump coherent anti-Stokes Raman scattering (CARS) spectroscopy JO - Combustion & Flame JF - Combustion & Flame Y1 - 2004/08// VL - 138 IS - 3 M3 - Article SP - 273 EP - 284 SN - 00102180 AB - Single-shot, dual-pump coherent anti-Stokes Raman scattering (CARS) measurements of N2 and CO2 were performed in the exhaust stream of a swirl-stabilized JP-8-fueled combustor under sooting conditions. The combustor is designed to study particulate formation and particle-size distributions for different flame conditions and therefore is operated at near-stoichiometric overall fuel–air ratios. Various jet fuels and additive concentrations were studied. These conditions pose a significant challenge for temperature measurements using standard N2 CARS due to strong flame emission and absorption of the CARS signal by the C2 Swan band. With the dual-pump CARS technique employed in this study, the N2 CARS signal is generated at a wavelength (496 nm) that is not absorbed by C2, and concentration measurements of CO2 can be performed. The standard deviations of the single-shot temperature measurements were approximately 3–4% of the mean values for equivalence ratios ranging from 0.4 to 1.1, whereas those of the single-shot CO2 concentration measurements were between 9 and 20% of the mean values. Previous single-shot temperature and CO2 concentration measurements using dual-pump CARS in this liquid-fueled combustor were limited to an equivalence ratio of 0.45, with standard deviations in temperature of about 5–6% of the mean value of 1143 K (Lucht et al., AIAA J. 41 (4) (2003) 679–686). The current study demonstrates a significant improvement in the applicability of single-shot CARS temperature and CO2 concentration measurements to practical, swirl-stabilized combustors under sooting conditions. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TEMPERATURE measurements KW - LIQUID fuels KW - RAMAN effect KW - COMBUSTION chambers KW - Coherent anti-Stokes Raman scattering KW - Liquid-fueled combustor KW - Sooting flames KW - Temperature measurements N1 - Accession Number: 14035838; Roy, Sukesh 1; Email Address: sukesh@innssi.com Meyer, Terrence R. 1 Lucht, Robert P. 2 Belovich, Vincent M. 3 Corporan, Edwin 3 Gord, James R. 3; Affiliation: 1: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, OH 45440, USA 2: Department of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA 3: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Aug2004, Vol. 138 Issue 3, p273; Subject Term: TEMPERATURE measurements; Subject Term: LIQUID fuels; Subject Term: RAMAN effect; Subject Term: COMBUSTION chambers; Author-Supplied Keyword: Coherent anti-Stokes Raman scattering; Author-Supplied Keyword: Liquid-fueled combustor; Author-Supplied Keyword: Sooting flames; Author-Supplied Keyword: Temperature measurements; NAICS/Industry Codes: 562213 Solid Waste Combustors and Incinerators; NAICS/Industry Codes: 562210 Waste treatment and disposal; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.combustflame.2004.04.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14035838&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lyo, S.K. AU - Huang, D.H. T1 - Multisublevel transport and magnetoquantum oscillations in quantum wires JO - Current Applied Physics JF - Current Applied Physics Y1 - 2004/08// VL - 4 IS - 5 M3 - Article SP - 491 EP - 496 SN - 15671739 AB - Transport in one-dimensional (1D) wires show interesting properties due to restricted 1D phase space. We calculate 1D transport properties to a controlled accuracy and examine the effect of combined elastic and inelastic scattering on the conductance G and the thermoelectric power S of a single-quantum-well wire (SQWR) and tunnel-coupled double-quantum-well wires (DQWR''s) in a perpendicular magnetic field. The field dependence of G and S are strikingly different in ballistic and diffusive regimes. Interwell tunneling in DQWR''s distorts the conductance and the TEP drastically from those of a SQWR and yields a sign anomaly for S. [Copyright &y& Elsevier] AB - Copyright of Current Applied Physics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WIRE KW - BALLISTICS KW - FIELD theory (Physics) KW - PHYSICS KW - 73.63.Hs KW - 73.63.Nm KW - Ballistic KW - Conductance KW - Diffusive KW - Sign anomaly KW - Thermopower N1 - Accession Number: 13736496; Lyo, S.K. 1; Email Address: sklyo@sandia.gov Huang, D.H. 2; Affiliation: 1: Sandia National Laboratories, Albuquerque, NM 87185, USA 2: Air Force Research Laboratory (AFRL/VSSS), Kirtland Air Force Base, Kirtland, NM 87117, USA; Source Info: Aug2004, Vol. 4 Issue 5, p491; Subject Term: WIRE; Subject Term: BALLISTICS; Subject Term: FIELD theory (Physics); Subject Term: PHYSICS; Author-Supplied Keyword: 73.63.Hs; Author-Supplied Keyword: 73.63.Nm; Author-Supplied Keyword: Ballistic; Author-Supplied Keyword: Conductance; Author-Supplied Keyword: Diffusive; Author-Supplied Keyword: Sign anomaly; Author-Supplied Keyword: Thermopower; NAICS/Industry Codes: 423510 Metal Service Centers and Other Metal Merchant Wholesalers; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.cap.2004.02.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13736496&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pack, Daniel J. AU - Avanzato, Robert AU - Ahigren, David J. AU - Verner, Igor M. T1 - Fire Fighting Mobile Robotic s and Interdisciplinary Design-Comparative Perspectives. JO - IEEE Transactions on Education JF - IEEE Transactions on Education Y1 - 2004/08// VL - 47 IS - 3 M3 - Article SP - 369 EP - 376 SN - 00189359 AB - The objective of this paper is to illustrate the benefits of an autonomous fire-fighting robot design competition as an effective tool for undergraduate education. It presents experiences at the United States Air Force Academy, USAF Academy, CO; Pennsylvania State University-Abington; and Trinity College, Hartford, CT, together with the results of the contest surveys conducted in collaboration with The Technion-Israel Institute of Technology, Haifa. The primary goal of the design project is to create an autonomous mobile robot that navigates through a maze searching for a fire (simulated by a burning candle), detects the candle's flame, extinguishes the flame, and returns to a designated starting location in the maze. The fire-fighting design contest promotes interdisciplinary design and teamwork. To accomplish the stated goal, students must integrate knowledge gained from such classes as engineering design, circuits, controls, signals and systems, computer programming, mathematics, and engineering mechanics. Within the three institutions, the contest has been successfully utilized as a foundation for a wide range of educational goals. These activities include freshman design, robotics courses, K-12 outreach, senior design projects, and undergraduate research. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Education is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOBILE robots KW - ROBOTICS KW - AUTOMATION KW - MACHINE theory KW - SYSTEMS development KW - COMPUTER science KW - Design project KW - educational outcomes KW - fire-lighting robot contest KW - interdisciplinary curricula KW - K-12 outreach. KW - mobile robotics N1 - Accession Number: 14245196; Pack, Daniel J. 1 Avanzato, Robert 2 Ahigren, David J. 3 Verner, Igor M. 4; Affiliation: 1: Department of Electrical Engineering, United States Air Force Academy, USAF Academy, CO 80840-6236 USA. 2: School of Engineering Design, Technology and Professional Programs, Pennsylvania State University, Abington, PA 19001 USA. 3: Department of Engineering, Trinity College, Hartford, CT 06106 USA. 4: Department of Education in Technology and Science, The Technion--Israel Institute of Technology, Haifa 32000, Israel.; Source Info: Aug2004, Vol. 47 Issue 3, p369; Subject Term: MOBILE robots; Subject Term: ROBOTICS; Subject Term: AUTOMATION; Subject Term: MACHINE theory; Subject Term: SYSTEMS development; Subject Term: COMPUTER science; Author-Supplied Keyword: Design project; Author-Supplied Keyword: educational outcomes; Author-Supplied Keyword: fire-lighting robot contest; Author-Supplied Keyword: interdisciplinary curricula; Author-Supplied Keyword: K-12 outreach.; Author-Supplied Keyword: mobile robotics; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TE.2004.825547 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14245196&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Radasky, William A. AU - Baum, Carl E. AU - Wik, Manuem W. T1 - Introduction to the Special Is sue on High-Power Electromagnetics (HPEM) and Intentional Electromagnetic Interference (IEMI). JO - IEEE Transactions on Electromagnetic Compatibility JF - IEEE Transactions on Electromagnetic Compatibility Y1 - 2004/08// VL - 46 IS - 3 M3 - Article SP - 314 EP - 321 SN - 00189375 AB - A new threat to civil society has recently emerged. It is known as intentional electromagnetic interference (IEMI) and covers the threat of intense electromagnetic disturbances that may be applied to the sophisticated electronic systems that are so important to our daily lives. This paper provides a brief background for the threat, defines important terms, describes the different types of electromagnetic threats, explores the importance of topological concepts, summarizes the current understanding of equipment susceptibility, provides, an overview of protection concepts, and summarizes the ongoing work in international standardization. This paper also serves as the introduction to the IEMI papers in this special issue. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electromagnetic Compatibility is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETISM KW - ELECTROMAGNETIC interference KW - STANDARDIZATION KW - TRANSIENTS (Electricity) KW - ELECTRONIC systems KW - ELECTRONICS KW - High-power electromagnetics (UPEM) KW - intentional electromagnetic interference (IEMI) KW - standardization KW - system effects KW - transients. N1 - Accession Number: 14406851; Radasky, William A. 1; Email Address: wradasky@aol.com Baum, Carl E. 2; Email Address: Magdalena.Lopez@kirtland.af.mil Wik, Manuem W. 3; Email Address: manuel.wik@fmv.se; Affiliation: 1: Metatech Corporation,Goleta, CA 93117 USA. 2: Air Force Research Laboratory, Directed Energy Directorate, Kirtland Air Force Base, NM 87118 USA. 3: Defence Materiel Administration (FMV), Stockholm, SE-11588 Sweden.; Source Info: Aug2004, Vol. 46 Issue 3, p314; Subject Term: ELECTROMAGNETISM; Subject Term: ELECTROMAGNETIC interference; Subject Term: STANDARDIZATION; Subject Term: TRANSIENTS (Electricity); Subject Term: ELECTRONIC systems; Subject Term: ELECTRONICS; Author-Supplied Keyword: High-power electromagnetics (UPEM); Author-Supplied Keyword: intentional electromagnetic interference (IEMI); Author-Supplied Keyword: standardization; Author-Supplied Keyword: system effects; Author-Supplied Keyword: transients.; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TEMC.2004.831899 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14406851&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Prather, William D. AU - Baum, Carl E. AU - Torres, Robert J. AU - Sabath, Frank AU - Nitsch, Danial T1 - Survey of Worldwide High-Power Wideband Capabilities. JO - IEEE Transactions on Electromagnetic Compatibility JF - IEEE Transactions on Electromagnetic Compatibility Y1 - 2004/08// VL - 46 IS - 3 M3 - Article SP - 335 EP - 344 SN - 00189375 AB - Wideband and ultrawideband (UWB) technologies have achieved: notable progress in recent years, aided immeasurably by improvements in solid-state manufacturing, computers, and digitizers. As a result, wideband systems that were difficult or impossible to implement ten years ago are now being built for an increasingly wide variety of applications including transient radar, concealed object detection, mine clearing, pipeline inspections, archeology, geology, electronic effects testing, and communication. In this paper, we discuss current wideband source technology around the world as well as laboratory and test facilities. We also will briefly touch on frequency limitations of anechoic chambers, design of transmission line simulators, frequency regulation requirements for outdoor ranges, and personnel exposure limits. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electromagnetic Compatibility is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVES KW - SHORTWAVE radio KW - TRANSIENTS (Electricity) KW - RADAR KW - ELECTRONIC systems KW - ELECTRONICS KW - High-power microwaves KW - sources KW - test ranges KW - transient KW - ultrawideband. N1 - Accession Number: 14406854; Prather, William D. 1; Email Address: william.prather@kirtland.af.mil Baum, Carl E. 1 Torres, Robert J. 1 Sabath, Frank 2 Nitsch, Danial 2; Affiliation: 1: Air Force Research Laboratory, Kirtland AFB, NM 87117 USA. 2: Armed Forces Research Institute for Protective Technologies, 42-29623 Munster, Germany.; Source Info: Aug2004, Vol. 46 Issue 3, p335; Subject Term: MICROWAVES; Subject Term: SHORTWAVE radio; Subject Term: TRANSIENTS (Electricity); Subject Term: RADAR; Subject Term: ELECTRONIC systems; Subject Term: ELECTRONICS; Author-Supplied Keyword: High-power microwaves; Author-Supplied Keyword: sources; Author-Supplied Keyword: test ranges; Author-Supplied Keyword: transient; Author-Supplied Keyword: ultrawideband.; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TEMC.2004.831826 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14406854&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buryachenko, V.A. AU - Schoeppner, G.A. T1 - Effective elastic and failure properties of fiber aligned composites JO - International Journal of Solids & Structures JF - International Journal of Solids & Structures Y1 - 2004/08// VL - 41 IS - 16/17 M3 - Article SP - 4827 EP - 4844 SN - 00207683 AB - A digital image processing technique is used for measurement of centroid coordinates of fibers with forthcoming estimation of statistical parameters and functions describing the stochastic structure of laminated fiber composites. Comparative statistical analysis of the experimentally measured and numerically simulated fiber distributions are performed. We consider a linearly elastic composite medium, which consists of a homogeneous matrix containing a statistically homogeneous set of ellipsoidal inclusions. The multiparticle effective field method (MEFM) [Appl. Mech. Rev. 54 (2001) 1] based on the theory of functions of random variables and Green''s functions is used to demonstrate the dependence of effective elastic moduli of fiber reinforced composites on the fiber radial distribution functions as estimated from measured experimental data as well as from the ensembles generated by the proposed method. The MEFM is applied for the estimations of second statistical moments of stresses in both the constituents and the interfaces between the matrix and fibers. These estimations are used in turn for the prediction of the effective envelope for failure initiation. The dependence of the effective failure envelope on the elastic, geometrical, and failure parameters of the constituents and the interphase matrix/fibers are analyzed. [Copyright &y& Elsevier] AB - Copyright of International Journal of Solids & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - INHOMOGENEOUS materials KW - STEREOLOGY KW - MICROMECHANICS KW - A. Microstructures KW - B. Inhomogeneous material KW - C. Elastic material N1 - Accession Number: 13562164; Buryachenko, V.A. 1; Email Address: buryach@aol.com Schoeppner, G.A. 2; Affiliation: 1: University of Dayton Research Institute, Nonmetallic materials, 300 College Park, Dayton, OH 45469-0168, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLBC, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Aug2004, Vol. 41 Issue 16/17, p4827; Subject Term: MICROSTRUCTURE; Subject Term: INHOMOGENEOUS materials; Subject Term: STEREOLOGY; Subject Term: MICROMECHANICS; Author-Supplied Keyword: A. Microstructures; Author-Supplied Keyword: B. Inhomogeneous material; Author-Supplied Keyword: C. Elastic material; Number of Pages: 18p; Document Type: Article L3 - 10.1016/j.ijsolstr.2004.02.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13562164&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Walters, Thomas J. AU - Ryan, Kathy L. AU - Constable, Stefan H. T1 - Thermoregulation by rhesus monkeys at different absolute humidities. JO - Journal of Comparative Physiology B: Biochemical, Systemic & Environmental Physiology JF - Journal of Comparative Physiology B: Biochemical, Systemic & Environmental Physiology Y1 - 2004/08// VL - 174 IS - 6 M3 - Article SP - 481 EP - 487 SN - 1432136X AB - The effect of relative humidity on thermoregulation has been well examined. Because the same relative humidity represents very different absolute humidities at different ambient temperatures, the present study was designed to examine the interaction of temperature and absolute humidity on the thermal balance of rhesus monkeys, Macaca mulatta. Thermal balance was examined in six unacclimated, unanesthetized, female rhesus monkeys at ambient temperatures of 25, 30, 35, and 40 °C and absolute humidities of 6, 22, and 40 torr. Monkeys were capable of achieving thermal balance under all conditions except at 40 °C with 40 torr absolute humidity, where experiments were stopped after rectal temperature exceeded 40.5 °C. At 40 °C, monkeys increased evaporative heat loss through both respiration and sweating; the slope of the relationship between evaporative heat loss and core temperature was attenuated by increases in absolute humidity. In contrast, absolute humidity had no direct effect on metabolic rate. The rise in body temperature under the conditions of high heat/high humidity was therefore most attributable to humidity-dependent decreases in evaporative heat loss. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Comparative Physiology B: Biochemical, Systemic & Environmental Physiology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RHESUS monkey KW - HUMIDITY KW - MACAQUES KW - CERCOPITHECIDAE KW - Metabolic rate KW - Temperature KW - Thermal balance N1 - Accession Number: 15781337; Walters, Thomas J. 1 Ryan, Kathy L. 1 Constable, Stefan H. 2; Affiliation: 1: Laboratory Division, United States Army Institute of Surgical Research, 3400 Rawley E. Chambers Avenue, 78234, Fort Sam Houston, TX, USA 2: Air Force Research Laboratory, 78235, Brooks AFB, TX, USA; Source Info: Aug2004, Vol. 174 Issue 6, p481; Subject Term: RHESUS monkey; Subject Term: HUMIDITY; Subject Term: MACAQUES; Subject Term: CERCOPITHECIDAE; Author-Supplied Keyword: Metabolic rate; Author-Supplied Keyword: Temperature; Author-Supplied Keyword: Thermal balance; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15781337&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mayhew, James E. AU - Baughn, James W. AU - Byerley, Aaron R. T1 - ADIABATIC EFFECTIVENESS OF FILM COOLING WITH COMPOUND ANGLE HOLES -- THE EFFECT OF BLOWING RATIO AND FREESTREAM TURBULENCE. JO - Journal of Heat Transfer JF - Journal of Heat Transfer Y1 - 2004/08// VL - 126 IS - 4 M3 - Article SP - 501 EP - 501 SN - 00221481 AB - Discusses research on the effects of blowing ratio and freestream turbulence on the adiabatic effectiveness of film cooling with compound angle holes. Levels of freestream turbulence; Description of the surface and compound angles; Definition of adiabatic effectiveness; Importance of adiabatic effectiveness to determination of the total heat transfer. KW - TURBULENCE KW - COOLING KW - SURFACES (Technology) KW - HEAT transfer KW - ADIABATIC demagnetization N1 - Accession Number: 14797765; Mayhew, James E. 1 Baughn, James W. 2 Byerley, Aaron R. 3; Affiliation: 1: Rose-Hulman Institute of Technology 2: University of California, Davis 3: United States Air Force Academy; Source Info: Aug2004, Vol. 126 Issue 4, p501; Subject Term: TURBULENCE; Subject Term: COOLING; Subject Term: SURFACES (Technology); Subject Term: HEAT transfer; Subject Term: ADIABATIC demagnetization; Number of Pages: 1p; Illustrations: 1 Color Photograph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14797765&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baughn, James W. AU - Ochoa, A. David AU - Smith, Jason S. AU - Byerley, Aaron R. T1 - SURFACE FLOW VISUALIZATION USING ENCAPSULATED THERMAL TUFTS FOR STEADY FLOW AND A DYNAMIC HEAT TRANSFER MEASUREMENT TECHNIQUE FOR UNSTEADY FLOWS. JO - Journal of Heat Transfer JF - Journal of Heat Transfer Y1 - 2004/08// VL - 126 IS - 4 M3 - Article SP - 502 EP - 502 SN - 00221481 AB - Discusses research on the flow direction on a surface using thermal tufts produced with embedded capsules. Level of color play temperature; Use of low thermal substrate; Correlation of frequency response to the value of heat transfer coefficient; Range of fluctuations for air. KW - FLOW visualization KW - HEAT transfer KW - SURFACES (Technology) KW - TEMPERATURE KW - AIR N1 - Accession Number: 14797766; Baughn, James W. 1 Ochoa, A. David 1 Smith, Jason S. 1 Byerley, Aaron R. 2; Affiliation: 1: University of California, Davis, California 2: United States Air Force Academy, Colorado; Source Info: Aug2004, Vol. 126 Issue 4, p502; Subject Term: FLOW visualization; Subject Term: HEAT transfer; Subject Term: SURFACES (Technology); Subject Term: TEMPERATURE; Subject Term: AIR; Number of Pages: 1p; Illustrations: 2 Color Photographs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14797766&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Tyler C. AU - Smith, Besa AU - Corbeil, Thomas E. AU - Riddle, James R. AU - Ryan, Margaret A.K. T1 - Self-Reported Mental Health Among US Military Personnel Prior and Subsequent to the Terrorist Attacks of September 11, 2001. JO - Journal of Occupational & Environmental Medicine JF - Journal of Occupational & Environmental Medicine Y1 - 2004/08// VL - 46 IS - 8 M3 - Article SP - 775 EP - 782 SN - 10762752 AB - There is much concern over the potential for short- and long-term adverse mental health effects caused by the terrorist attacks on September 11, 2001. This analysis used data from the Millennium Cohort Study to identify subgroups of US military members who enrolled in the cohort and reported their mental health status before the traumatic events of September 11 and soon after September 11. While adjusting for confounding, multi variable logistic regression, analysis of variance, and multivariate ordinal, or polychotomous logistic regression were used to compare 18 self-reported mental health measures in US military members who enrolled in the cohort before September 11, 2001 with those military personnel who enrolled after September 11, 2001. In contrast to studies of other populations, military respondents reported fewer mental health problems in the months immediately after September 11, 2001. (J Occup Environ Med. 2004;46:775-782) [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Occupational & Environmental Medicine is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY personnel KW - MENTAL health KW - SEPTEMBER 11 Terrorist Attacks, 2001 KW - TERRORISM KW - REGRESSION analysis KW - UNITED States N1 - Accession Number: 14507364; Smith, Tyler C. 1 Smith, Besa 1; Email Address: Smith@nhrc.navy.mil Corbeil, Thomas E. 1 Riddle, James R. 2 Ryan, Margaret A.K. 1; Affiliation: 1: Department of Defense Center for Deployment Health Research at the Naval Health Research Center, San Diego, California 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio; Source Info: Aug2004, Vol. 46 Issue 8, p775; Subject Term: MILITARY personnel; Subject Term: MENTAL health; Subject Term: SEPTEMBER 11 Terrorist Attacks, 2001; Subject Term: TERRORISM; Subject Term: REGRESSION analysis; Subject Term: UNITED States; NAICS/Industry Codes: 621330 Offices of Mental Health Practitioners (except Physicians); Number of Pages: 8p; Illustrations: 4 Charts; Document Type: Article L3 - 10.1097/01.jom.0000135545.51183.ad UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14507364&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin AU - R. B. AU - Qu AU - L. AU - Lin AU - Y. AU - Harruff AU - B. A. AU - Bunker AU - C. E. AU - Gord AU - J. R. AU - Allard AU - L. F. AU - Sun AU - Y.-P. T1 - Functionalized Carbon Nanotubes with Tethered Pyrenes: Synthesis and Photophysical Properties. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2004/08// VL - 108 IS - 31 M3 - Article SP - 11447 EP - 11453 SN - 15206106 AB - Single-walled (SWNTs) and multiple-walled carbon nanotubes (MWNTs) were functionalized with dendra of tethered pyrene species, where the tether length was varied. These functionalized carbon nanotube samples are soluble in common organic solvents, making it possible to characterize the samples and to investigate and compare the photophysical properties of the tethered pyrene moieties in homogeneous solution. In general, the pyrene monomer excited state is significantly quenched by two competing processes of “intramolecular” excimer formation and energy transfer to the nanotube. The excimer formation is dynamic in nature, and the excimer emission is also quenched by the energy transfer, contributing to the overall low fluorescence quantum yields and rapid fluorescence decays. There are effects of the tether length on photoexcited-state properties of the pyrene species according to a comparison of the results obtained in solution vs in solid-state polymer matrix. The structurally more flexible environment for the pyrene moiety associated with a longer tether is more favorable to the excimer formation and less favorable to the excited-state energy transfer. The mechanistic implication of the results and potential applications of such materials are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON KW - NANOTUBES KW - PYRENE (Chemical) KW - SOLVENTS N1 - Accession Number: 14646200; Martin R. B. 1 Qu L. 1 Lin Y. 1 Harruff B. A. 1 Bunker C. E. 1 Gord J. R. 1 Allard L. F. 1 Sun Y.-P. 1; Affiliation: 1: Department of Chemistry, Howard L. Hunter Chemistry Laboratory, Clemson University, Clemson, South Carolina 29634-0973, Air Force Research Laboratory, Propulsion Directorate, WPAFB, Ohio 45433-7103, and High-Temperature Materials Laboratory, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6062; Source Info: Aug2004, Vol. 108 Issue 31, p11447; Subject Term: CARBON; Subject Term: NANOTUBES; Subject Term: PYRENE (Chemical); Subject Term: SOLVENTS; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14646200&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Das, G.P. AU - Yeates, A.T. AU - Dudis, D.S. T1 - Ab initio fragment orbital theory (AFOT): application to some two-photon-absorbing (TPA) molecules JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2004/07/21/ VL - 393 IS - 1-3 M3 - Article SP - 76 EP - 80 SN - 00092614 AB - The recently developed AFOT code is applied to investigate the two-photon-absorbing (TPA) properties of some of the bis(styryl) benzene derivatives (BSBD) demonstrated recently to possess large TPA cross sections. The results are compared both with the earlier semi-empirical as well as the more recent density functional calculations. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TWO-photon absorbing materials KW - BENZENE KW - QUANTUM chemistry KW - NONLINEAR optics N1 - Accession Number: 13703611; Das, G.P.; Email Address: guru.das@wpafb.af.mil Yeates, A.T. 1 Dudis, D.S. 1; Affiliation: 1: Materials and Manufacturing Division, Air Force Research Laboratory, AFRL/MLBP, WPAFB, OH 45433, USA; Source Info: Jul2004, Vol. 393 Issue 1-3, p76; Subject Term: TWO-photon absorbing materials; Subject Term: BENZENE; Subject Term: QUANTUM chemistry; Subject Term: NONLINEAR optics; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.cplett.2004.04.105 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13703611&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Svalgaard, Leif AU - Cliver, Edward W. AU - Le Sager, Philippe T1 - IHV: a new long-term geomagnetic index JO - Advances in Space Research JF - Advances in Space Research Y1 - 2004/07/15/ VL - 34 IS - 2 M3 - Article SP - 436 SN - 02731177 AB - We derive a new daily index of geomagnetic activity, the Inter-Hour Variability index (IHV), for investigations of the long-term variability of the solar wind-magnetosphere system. The IHV index is used to successfully reconstruct yearly-averages of the range indices am, ap, and aa from 1959 through 2000. When we attempt to reconstruct the aa index back to 1901, however, the reconstructed aa lies above the observed aa for years before 1957, with the difference between the two curves being the greatest (∼5–10 nT) during the first two decades of the 20th century. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GEOMAGNETISM KW - SOLAR activity KW - STELLAR activity KW - SOLAR radiation KW - aa index KW - Geomagnetic index KW - Inter-hour variability index N1 - Accession Number: 13590459; Svalgaard, Leif 1; Email Address: leif@leif.org Cliver, Edward W. 2; Email Address: Edward.Cliver@hanscom.af.mil Le Sager, Philippe 3; Email Address: philippe_lesager@pvamu.edu; Affiliation: 1: Easy Toolkit Inc., 6927 Lawler Ridge, Houston, TX 77055-7010, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA 01731, USA 3: Prairie View A&M University, Solar Observatory, P.O. Box 307, Prairie View, TX 77446, USA; Source Info: Jul2004, Vol. 34 Issue 2, p436; Subject Term: GEOMAGNETISM; Subject Term: SOLAR activity; Subject Term: STELLAR activity; Subject Term: SOLAR radiation; Author-Supplied Keyword: aa index; Author-Supplied Keyword: Geomagnetic index; Author-Supplied Keyword: Inter-hour variability index; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.asr.2003.01.029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13590459&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sutherland, R.L. AU - Tondiglia, V.P. AU - Natarajan, L.V. AU - Bunning, T.J. T1 - Phenomenological model of anisotropic volume hologram formation in liquid-crystal-photopolymer mixtures. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/07/15/ VL - 96 IS - 2 M3 - Article SP - 951 EP - 965 PB - American Institute of Physics SN - 00218979 AB - The real time formation of anisotropic volume holographic reflection gratings in a liquid-crystal/ photopolymer mixture is studied. We develop a phenomenological model of grating formation that incorporates the photophysics and photochemistry of the initiator dye, reaction-diffusion kinetics of the monomer-polymer system, phase separation of the liquid crystal, nematic order evolution of liquid-crystal droplets, and volume shrinkage of the polymer. We then test this model by experimentally monitoring the diffraction efficiency for s and p polarization, Brag wavelength, and laser scattering in real time as the grating is formed. The model yields good agreement with experimental data for different recording intensities and exposure times. We discuss the physics of the system as it evolves in time and explain the major features of anisotropic grating formation in acrylate-based holographic polymer-dispersed liquid crystals. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOPOLYMERS KW - LIQUID crystals KW - ANISOTROPY KW - DIFFRACTION gratings KW - SEMICONDUCTOR doping KW - PHYSICS N1 - Accession Number: 13617683; Sutherland, R.L. 1; Email Address: sutherlandr@saic.com Tondiglia, V.P. 1 Natarajan, L.V. 1 Bunning, T.J. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433; Source Info: 7/15/2004, Vol. 96 Issue 2, p951; Subject Term: PHOTOPOLYMERS; Subject Term: LIQUID crystals; Subject Term: ANISOTROPY; Subject Term: DIFFRACTION gratings; Subject Term: SEMICONDUCTOR doping; Subject Term: PHYSICS; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; Number of Pages: 15p; Illustrations: 1 Diagram, 11 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13617683&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hazu, K. AU - Sota, T. AU - Adachi, S. AU - Chichibu, Sf. AU - Cantwell, G. AU - Reynolds, D.C. AU - Litton, C.W. T1 - Phonon scattering of excitons and biexcitons in ZnO. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/07/15/ VL - 96 IS - 2 M3 - Article SP - 1270 EP - 1272 PB - American Institute of Physics SN - 00218979 AB - The phase relaxation time of biexcitons Tb2bi and that of excitons T2ex in a bulk ZnO have been measured by the use of femtosecond four-wave mixing as functions of excitation wavelength, excitation power, and temperature. The biexciton-acoustic phonon interaction coefficient has been determined to be Βacbi ≈ 53/µeV/K as an average value. For A excitons, the interaction coefficients with acoustic and optical phonons have been determined to beΒacex≈ 8.4 µeV/K and Βoptex ≈ 14 meV, respectively. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXCITON theory KW - ZINC oxide KW - RELAXATION phenomena KW - PHONONS KW - COMPOUND semiconductors KW - PHYSICS N1 - Accession Number: 13617658; Hazu, K. 1; Email Address: kouji@moegi.waseda.jp Sota, T. 1 Adachi, S. 2 Chichibu, Sf. 3 Cantwell, G. 4 Reynolds, D.C. 5 Litton, C.W. 5; Affiliation: 1: Department of Electrical, Electronics, and Computer Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan 2: Department of Applied Physics, Hokkaido University, Kitaku, Sapporo 060-8628, Japan 3: Institute of Applied Physics, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan 4: Director of Research Zn-Technology, Inc. 910 Columbia St. Brea, California 92821 5: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: 7/15/2004, Vol. 96 Issue 2, p1270; Subject Term: EXCITON theory; Subject Term: ZINC oxide; Subject Term: RELAXATION phenomena; Subject Term: PHONONS; Subject Term: COMPOUND semiconductors; Subject Term: PHYSICS; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 3p; Illustrations: 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13617658&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miracle, D.B. AU - Senkov, O.N. AU - Sanders, W.S. AU - Kendig, K.L. T1 - Structure-forming principles for amorphous metals JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2004/07/15/ VL - 375-377 M3 - Article SP - 150 EP - 156 SN - 09215093 AB - The purpose of this research is to establish structure-forming principles that govern the atomic structures of metallic glasses. A structural model based on efficient atomic packing will be discussed and applied to the topological systems that represent most metallic glass alloys. The concept of efficient atomic packing has direct and specific implications regarding the local structure and composition of metallic glasses. Specific solute-to-solvent atomic radius ratios and specific solute concentrations related to these ratios are shown to be preferred in this model, and analysis of a wide range of metallic glass systems shows a very strong correlation with these predicted values. Relationships between atomic size and concentration are discussed, and new insights are proposed based on the current structural model. Possible local atomic configurations (i.e., atomic clusters) are defined based on topological constraints that are derived from the requirement of efficient atomic packing. Experimental observations drawn from the literature that provide support for this model are presented. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AMORPHOUS substances KW - METALLIC glasses KW - MICROCLUSTERS KW - LIQUID metals KW - Amorphous metals KW - Atomic clusters KW - Structure N1 - Accession Number: 13985457; Miracle, D.B. 1; Email Address: daniel.miracle@wpafb.af.mil Senkov, O.N. 2 Sanders, W.S. 1 Kendig, K.L. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 2: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH, USA; Source Info: Jul2004, Vol. 375-377, p150; Subject Term: AMORPHOUS substances; Subject Term: METALLIC glasses; Subject Term: MICROCLUSTERS; Subject Term: LIQUID metals; Author-Supplied Keyword: Amorphous metals; Author-Supplied Keyword: Atomic clusters; Author-Supplied Keyword: Structure; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.msea.2003.10.130 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13985457&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zafer Turgut AU - Huang, Meiqing Q. AU - Horwath, John C. AU - Hinde, Ruth AU - Kubicki, Julie AU - Fingers, Richard T. T1 - Effect of Tensile Stress and Texture on Magnetic Properties of FeCo Laminates. JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2004/07/02/Jul2004 Part 2 of 2 VL - 40 IS - 4 M3 - Article SP - 2742 EP - 2744 SN - 00189464 AB - AC and dc magnetic properties and related losses of FeCo alloy sheet samples have been determined under applied tensile stress. Heat-treated strips of alloys Hiperco 50 Hiperco 50-HS and Hiperco 27 with three different orientations (0°-45°-90°) with respect to the rolling direction were tested under tensile stresses up to 200 MPa. In our earlier work, we reported the effect of the compressive stress on the same alloy compositions [1]. Unlike compressive stress, tensile stress decreased the coercivity and increased remanence of the alloys. For the 90°-oriented Hiperco 50 alloy with acoercivity of 1.12 Oe under no applied stress, the minimum coercivity of 0.29 Oe occurred at about 100 MPa. The effect of tensile stress on the rernanence was most pronounced in the Hiperco 50 HS samples. A gradual decrease in the coercive field of the three Hipérco 50 MS samples was observed up to 200 MPa. On the other hand, a minimum at 25 MPa is observed for the coercivity of Hiperco 27 samples. At the same tensile stress, the remanence ratio had a maximum. The 0°-oriented sample exhibited the lowest core loss value of the Hiperco 27 samples. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROALLOYING KW - AMALGAMATION KW - MAGNETISM KW - MATHEMATICAL physics KW - MAGNETICS KW - ALLOYS KW - Effect of texture KW - FeCo alloys KW - magnetic losses KW - soft magnetic materials N1 - Accession Number: 14436149; Zafer Turgut 1; Email Address: zturgut@ues.com Huang, Meiqing Q. 1 Horwath, John C. 2 Hinde, Ruth 2 Kubicki, Julie 2 Fingers, Richard T. 2; Affiliation: 1: UES Incorporated, Dayton, OH 45440 USA. 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA.; Source Info: Jul2004 Part 2 of 2, Vol. 40 Issue 4, p2742; Subject Term: MICROALLOYING; Subject Term: AMALGAMATION; Subject Term: MAGNETISM; Subject Term: MATHEMATICAL physics; Subject Term: MAGNETICS; Subject Term: ALLOYS; Author-Supplied Keyword: Effect of texture; Author-Supplied Keyword: FeCo alloys; Author-Supplied Keyword: magnetic losses; Author-Supplied Keyword: soft magnetic materials; Number of Pages: 3p; Document Type: Article L3 - 10.1109/TMAG.2004.832119 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14436149&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, M. Q. AU - Turgut, Z. AU - Smith, B. R. AU - Chen, Z. M. AU - Ma, B. M. AU - Chu, S. Y. AU - Laughlin, D. E. AU - Horwath, J. C. AU - Fingers, R. T. T1 - Magnetic Properties of Sm(CObalFe0.31Zr0.05CU0.04Bx) Alloys and Their Melt-Spun Materials (x = 0.02- 0.04, z = 7.5-12). JO - IEEE Transactions on Magnetics JF - IEEE Transactions on Magnetics Y1 - 2004/07/02/Jul2004 Part 2 of 2 VL - 40 IS - 4 M3 - Article SP - 2934 EP - 2936 SN - 00189464 AB - Cast alloys and melt-spun ribbons with nominal compositions of Sm(CobalFe0.31Zr0.05CU0.04Bx)z (x = 0.02-0.04, z = 7.5-12) have been synthesized and characterized in a temperature range of 10-1273 K and at fields up to 51. The main phase in the as-cast alloys exhibited a Th2 Ni17 type structure, with a strong uniaxial anisotropy. Minor phases with a TbCu7 and/or CaCu5 structure emerged as z (3d/R) decreased. As a result, the anisotropy field (HA) increased from 67 to 120 kOe, while 4πM8 fell from 12.8 to 10.5 kG at 300 K when z was decreased from 12 to 7.5. For melt-spun ribbons, they are nano-structured in nature and magnetically hard, even in the as-spun state. By lowering the value of z(3d/R) and raising the B content, a finer microstructure and a higher Hci were obtained. Hard magnetic properties of Hci = 4.9-12 kOe, 4πM8 = 9.0-12.0 kG at 300 K have been obtained from ribbon samples. Among them, Sm(CobalFe0.31Zr0.05Cu0.04B0.02)10 ribbon showed the highest (BH)max of 10.8 MGOe at 300 K. A Henkel plot analysis suggested the existence of exchange-coupling interaction between the magnetically hard and soft phases in the ribbon materials. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Magnetic properties KW - METALS KW - ALLOYS KW - RIBBONS KW - METALLIC composites KW - MATTER -- Constitution KW - 3d/R KW - Exchange coupling KW - hard magnetic property KW - magnetic alloy KW - melt-spun N1 - Accession Number: 14436212; Huang, M. Q. 1; Email Address: Meiqing.Huang@wpatb.af.mil Turgut, Z. 1; Email Address: zturgut@ues.com Smith, B. R. 2; Email Address: Brsmith@mqii.com Chen, Z. M. 2; Email Address: Zhongmimchen@mqii.com Ma, B. M. 2; Email Address: Baominma@mqii.com Chu, S. Y. 3; Email Address: sc79@andrew.cmu.edu Laughlin, D. E. 3; Email Address: d10p@andrew.cmu.edu Horwath, J. C. 4; Email Address: john.horwath@wpafb.af.mil Fingers, R. T. 4; Email Address: richard.fingers@wpafb.af.mil; Affiliation: 1: UBS Inc., Dayton, OH 45432 USA. 2: Magnequench Technology Center, Research Triangle Park, NC 27709 USA. 3: Materials Science and Engineering Department, Carnegie Mellon University, Pittsburgh, PA 15213 USA. 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433 USA.; Source Info: Jul2004 Part 2 of 2, Vol. 40 Issue 4, p2934; Subject Term: METALS -- Magnetic properties; Subject Term: METALS; Subject Term: ALLOYS; Subject Term: RIBBONS; Subject Term: METALLIC composites; Subject Term: MATTER -- Constitution; Author-Supplied Keyword: 3d/R; Author-Supplied Keyword: Exchange coupling; Author-Supplied Keyword: hard magnetic property; Author-Supplied Keyword: magnetic alloy; Author-Supplied Keyword: melt-spun; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 313220 Narrow Fabric Mills and Schiffli Machine Embroidery; NAICS/Industry Codes: 313230 Nonwoven Fabric Mills; NAICS/Industry Codes: 414130 Piece goods, notions and other dry goods merchant wholesalers; NAICS/Industry Codes: 424310 Piece Goods, Notions, and Other Dry Goods Merchant Wholesalers; Number of Pages: 3p; Document Type: Article L3 - 10.1109/TMAG.2004.828998 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14436212&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gili, Sanjitpal S. AU - Turner, Maria A. AU - Battaglia, Todd C. AU - Leis, Henry T. AU - Balian, Gary AU - Miller, Mark D. T1 - Semitendinosus Regrowth: Biochemical, Ultrastructural, and Physiological Characterization of the Regenerate Tendon. JO - American Journal of Sports Medicine JF - American Journal of Sports Medicine Y1 - 2004/07//Jul/Aug2004 VL - 32 IS - 5 M3 - Article SP - 1173 EP - 1181 SN - 03635465 AB - Background: Previous studies have suggested that hamstring tendons can regenerate following harvesting for anterior cruciate ligament reconstruction. Hypothesis: This "neo-tendon" is a true, functional tendon, not scar tissue. Study Design: Controlled laboratory study. Methods: Semitendinosus tendons were harvested from 35 New Zealand white rabbits using a standard tendon stripper. The rabbits were sacrificed 9 to 12 months following the index procedure and thoroughly evaluated. Results: Thirty-one rabbits were available at the time of sacrifice. The neo-tendon was present in 26 rabbits but was highly variable in size and location of its tibial insertion. Histologic and immunohistochemical staining confirmed that the regenerate tissue was indeed tendon with normal cellularity, organization, and immunolocalization of type I collagen. Electron microscopy showed regeneration of organized collagen tissue that simulated native tendon but with a smaller cross-sectional diameter. Functionally, the neo-tendon was able to transmit force across the musculotendinous junction but at a significantly slower rate than the opposite, control leg. Biomechanical properties of the neo-tendon were significantly less than the control side. Biochemical analysis revealed that the neo-tendons contained glycosaminoglycans and collagen, but levels were significantly lower than normal ten-dons. Conclusions: Semitendinosus tendons regenerate with biologically reactive tendinous tissues in an animal model. This tissue has many of the characteristics of a normal tendon but appears to be inferior to the original musculotendinous unit at 9- to 12- month evaluation. Further characterization of the "lizard tail phenomenon" is still needed. Clinical Relevance: Hamstring tendon regrowth may have a dramatic impact on postoperative function of patients who undergo anterior cruciate ligament reconstruction with these tendons. Further modulation of this regeneration may further reduce graft harvesting morbidity. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Sports Medicine is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HAMSTRING muscle KW - ANTERIOR cruciate ligament KW - LEG -- Muscles KW - CRUCIATE ligaments KW - SPORTS medicine KW - TENDONS -- Wounds & injuries KW - anterior cruciate ligament (AOL). KW - hamstring KW - regeneration N1 - Accession Number: 14143684; Gili, Sanjitpal S. 1 Turner, Maria A. 1 Battaglia, Todd C. 1 Leis, Henry T. 2 Balian, Gary 1 Miller, Mark D. 1,2; Affiliation: 1: Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia. 2: United States Air Force, Elmendorf AFB, Alaska.; Source Info: Jul/Aug2004, Vol. 32 Issue 5, p1173; Subject Term: HAMSTRING muscle; Subject Term: ANTERIOR cruciate ligament; Subject Term: LEG -- Muscles; Subject Term: CRUCIATE ligaments; Subject Term: SPORTS medicine; Subject Term: TENDONS -- Wounds & injuries; Author-Supplied Keyword: anterior cruciate ligament (AOL).; Author-Supplied Keyword: hamstring; Author-Supplied Keyword: regeneration; Number of Pages: 9p; Document Type: Article L3 - 10.1177/0363546503262159 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14143684&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bhushan, Bharat AU - Halasz, Annamaria AU - Spain, Jim C. AU - Hawari, Jalal T1 - Initial Reaction(s) in Biotransformation of CL-20 Is Catalyzed by Salicylate 1-Monooxygenase from Pseudomonas sp. Strain ATCC 29352. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2004/07// VL - 70 IS - 7 M3 - Article SP - 4040 EP - 4047 SN - 00992240 AB - CL-20 (2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane) (C6H6N12O12), a future-generation highenergy explosive, is biodegradable by Pseudomonas sp. strain FA1 and Agrobacteriutn sp. strain JS71; however, the nature of the enzyme(s) involved in the process was not understood. In the present study, salicylate 1-monooxygenase, a flavin adenine dinucleotide (FAD)-containing purified enzyme from Pseudomonas sp. strain ATCC 29352, biotransformed CL-20 at rates of 0.256 ± 0.011 and 0.043 ± 0.003 nmol min-1 mg of protein-1 under anaerobic and aerobic conditions, respectively. The disappearance of CL-20 was accompanied by the release of nitrite ions. Using liquid chromatography/mass spectrometry in the negative electrospray ionization mode, we detected a metabolite with a deprotonated mass ion [M - H]- at 345 Da, corresponding to an empirical formula of C6H6N10O8, produced as a result of two sequential N denitration steps on the CL-20 molecule. We also detected two isomeric metabolites with [M - H]- at 381 Da corresponding to an empirical formula of C6H10N10O10. The latter was a hydrated product of the metabolite C6H6N10O8 with addition of two H2O molecules, as confirmed by tests using 18O-labeled water. The product stoichiometry showed that each reacted CL-20 molecule produced about 1.7 nitrite ions, 3.2 molecules of nitrous oxide, 1.5 molecules of formic acid, and 0.6 ammonium ion. Diphenyliodonium-mediated inhibition of salicylate l-monooxygenase and a comparative study between native, deflavo, and reconstituted enzyme(s) showed that FAD site of the enzyme was involved in the biotransformation of CL-20 catalyzed by salicylate l-monooxygenase. The data suggested that salicylate l-monooxygenase catalyzed two oxygen-sensitive single-electron transfer steps necessary to release two nitrite ions from CL-20 and that this was followed by the secondary decomposition of this energetic chemical. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOTRANSFORMATION (Metabolism) KW - MONOOXYGENASES KW - PSEUDOMONAS KW - ENZYMES KW - IONS KW - SALICYLATES KW - CATALYSIS N1 - Accession Number: 13950985; Bhushan, Bharat 1 Halasz, Annamaria 1 Spain, Jim C. 2 Hawari, Jalal 1; Email Address: jalal.hawari@nrc.ca; Affiliation: 1: Biotechnology Research Institute, National Research Council of Canada, Montreal Quebec, Canada 2: U.S. Air Force Research Laboratory, Tyndall Air Force Base, Florida; Source Info: Jul2004, Vol. 70 Issue 7, p4040; Subject Term: BIOTRANSFORMATION (Metabolism); Subject Term: MONOOXYGENASES; Subject Term: PSEUDOMONAS; Subject Term: ENZYMES; Subject Term: IONS; Subject Term: SALICYLATES; Subject Term: CATALYSIS; Number of Pages: 8p; Illustrations: 2 Diagrams, 2 Charts, 8 Graphs; Document Type: Article L3 - 10.1128/AEM.70.7.4040-4047.2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13950985&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kar, Tapas AU - Akdim, Brahim AU - Duan, Xiaofeng AU - Pachter, Ruth T1 - A theoretical study of functionalized single-wall carbon nanotubes: ONIOM calculations JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2004/07// VL - 392 IS - 1-3 M3 - Article SP - 176 EP - 180 SN - 00092614 AB - In this study, we employed ONIOM calculations to study functionalized single-wall carbon nanotubes (SWCNTs), for assessing an appropriate level of theory for accurate binding energies calculations, particularly by considering ozone adsorption and arylation. Although ONIOM models reproduced the binding energies and geometries in relatively good agreement with the density functional theory B3LYP/6-31G* values in some cases, the `same level different basis set'' (SLDB) protocol, was shown to be more appropriate for studying SWCNTs, as the π-network was preserved. We also found that sidewall functionalization deforms the tube significantly, and the use of any lower level methods could not describe bond breaking/forming appropriately. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOTUBES KW - FULLERENES KW - CHEMICAL tests & reagents KW - SURFACE chemistry N1 - Accession Number: 13470771; Kar, Tapas 1; Email Address: tapaskar@cc.usu.edu Akdim, Brahim 2 Duan, Xiaofeng 2 Pachter, Ruth 2; Email Address: Ruth.Pachter@wpafb.af.mil; Affiliation: 1: Department of Chemistry and Biochemistry, Utah State University, ML279, Logan, UT 84322-0300, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7702, USA; Source Info: Jul2004, Vol. 392 Issue 1-3, p176; Subject Term: NANOTUBES; Subject Term: FULLERENES; Subject Term: CHEMICAL tests & reagents; Subject Term: SURFACE chemistry; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.cplett.2004.05.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13470771&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Daibog, E. I. AU - Logachev, Yu. I. AU - Kahler, S. W. AU - Kecskemety, K. T1 - Sequences of Solar Events with Identical Decays as a Tool for Isolating Quasistationary States in the Interplanetary Space. JO - Cosmic Research JF - Cosmic Research Y1 - 2004/07//Jul/Aug2004 VL - 42 IS - 4 M3 - Article SP - 362 EP - 369 PB - Springer Science & Business Media B.V. SN - 00109525 AB - Time profile of the fluxes of energetic solar particles generated by solar flares (including their phase of decline) is formed to a large extent by the structure of the interplanetary magnetic field and its irregularities that move away from the Sun with the solar wind velocity. When propagation is a pure diffusion, the solar particle fluxes decay after the maximum in a power-law manner. At the same time in many cases this decay is exponential, which is indicative of a considerable role played by the convective sweep of particles and their adiabatic deceleration in the expanding solar wind. In this paper we consider the events with long exponential decays and newly discovered series of successive events with identical exponential decays lasting for one to two weeks or more. They allow us to assume that the interplanetary space is stable and homogeneous during this period. [ABSTRACT FROM AUTHOR] AB - Copyright of Cosmic Research is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR flares KW - SOLAR activity KW - DECAY schemes (Radioactivity) KW - SUN -- Active regions KW - SOLAR radiation KW - INTERPLANETARY magnetic fields KW - PHYSICAL cosmology KW - SPACE sciences N1 - Accession Number: 14360778; Daibog, E. I. 1 Logachev, Yu. I. 1 Kahler, S. W. 2 Kecskemety, K. 3; Affiliation: 1: Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, 119992 Russia 2: Air Force Research Laboratory, Space Vehicle Directorate, Hanscom AFB, MA 01731, USA 3: KFKI Research Institute for Particle and Nuclear Physics, H-125, Budapest, POB 49, Hungary; Source Info: Jul/Aug2004, Vol. 42 Issue 4, p362; Subject Term: SOLAR flares; Subject Term: SOLAR activity; Subject Term: DECAY schemes (Radioactivity); Subject Term: SUN -- Active regions; Subject Term: SOLAR radiation; Subject Term: INTERPLANETARY magnetic fields; Subject Term: PHYSICAL cosmology; Subject Term: SPACE sciences; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14360778&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sanford, G. E. AU - Welsh, J. S. T1 - EELV SECONDARY PAYLOAD ADAPTER (ESPA) STATIC QUALIFICATION TESTS, PART 4 OF 4. JO - Experimental Techniques JF - Experimental Techniques Y1 - 2004/07//Jul/Aug2004 VL - 28 IS - 4 M3 - Article SP - 34 EP - 36 SN - 07328818 AB - ESPA has now been qualified for flight payloads consisting of a 6,800 kg (15000 lb) primary spacecraft and up to six 181 kg (400 lb) secondary spacecraft. Qualification loads were derived to envelope load factors published by the Boeing Co. and Lockheed Martin for EELV, making ESPA capable of withstanding any applied flight load with minimal impact on the primary payload. Based on the qualification testing and the supporting analysis, the ESPA was found to have margins of safety on yield of about 2 for all load cases. Overall, the qualification tests were considered an overwhelming success, in large part due to the rigorous test methodology detailed in the present paper. The vast majority of the instrumentation provided clear, insightful data that can be used for analysis of future mission-specific flights. In addition, the loads applied during the test were controlled to an extremely high level of accuracy with minimal anomalies. All loads were maintained to within 1% of the flight loads during each of the recorded data points, generating significant confidence in the experimental data. Most importantly, the test procedures outlined in the present paper and meticulously adhered to for the qualification tests produced a testing environment that was safe for personnel, the test article, and hardware while generating accurate experimental data. [ABSTRACT FROM AUTHOR] AB - Copyright of Experimental Techniques is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSPORT planes -- Loading & unloading KW - CARGO handling KW - SCIENTIFIC experimentation KW - AERONAUTICS -- Flights KW - FREIGHT & freightage N1 - Accession Number: 14395999; Sanford, G. E. 1 Welsh, J. S. 2; Affiliation: 1: CSA Engineering Inc., Albuquerque, NM 2: Air Force Research Laboratory / VSSV, Kirtland AFB, NM; Source Info: Jul/Aug2004, Vol. 28 Issue 4, p34; Subject Term: TRANSPORT planes -- Loading & unloading; Subject Term: CARGO handling; Subject Term: SCIENTIFIC experimentation; Subject Term: AERONAUTICS -- Flights; Subject Term: FREIGHT & freightage; NAICS/Industry Codes: 488320 Marine Cargo Handling; NAICS/Industry Codes: 488519 Other freight transportation arrangement; NAICS/Industry Codes: 488510 Freight Transportation Arrangement; NAICS/Industry Codes: 484220 Specialized Freight (except Used Goods) Trucking, Local; NAICS/Industry Codes: 481112 Scheduled Freight Air Transportation; Number of Pages: 3p; Illustrations: 1 Black and White Photograph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14395999&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Curtis, J. Willard AU - Beard, Randal W. T1 - Satisficing: A New Approach to Constructive Nonlinear Control. JO - IEEE Transactions on Automatic Control JF - IEEE Transactions on Automatic Control Y1 - 2004/07// VL - 49 IS - 7 M3 - Article SP - 1090 EP - 1102 SN - 00189286 AB - The main contribution of this paper is a constructive parameterization of the class of almost smooth universal formulas which render a system asymptotically stable with respect to a known control Lyapunov function (CLF), and a constructive parameterization of a class of inverse optimal universal formulas having Kalman-like stability margins. The novelty of the parameterization is that it is given in terms of two function which are constrained to be locally Lipschitz and satisfy convex constraints. The implication of this result is that the CLF/universal formula approach can be combined with a priori performance objectives to design high performance control strategies. Two examples illustrate the approach. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Automatic Control is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR control theory KW - NONLINEAR theories KW - CONTROL theory (Mathematics) KW - LYAPUNOV functions KW - DIFFERENTIAL equations KW - BESSEL functions KW - Control Lyapunov functions (CLFs) KW - inverse optimality KW - nonlinear control KW - stability margins N1 - Accession Number: 13966055; Curtis, J. Willard 1; Email Address: jess.curtis@eglin.af.mil Beard, Randal W. 2; Email Address: beard@ee.byu.edu; Affiliation: 1: Air Force Research Laboratory, Eglin Air Force Base, Fort Walton Beach, FL 32548 USA. 2: Electrical and Computer Engineering Department, Brigham Young University, Pravo, UT 84601 USA (e-mail: beard@ee.byu.edu). nt..-.. TAta.- IA 1 lAO/TAr `X1fl4 flh176; Source Info: Jul2004, Vol. 49 Issue 7, p1090; Subject Term: NONLINEAR control theory; Subject Term: NONLINEAR theories; Subject Term: CONTROL theory (Mathematics); Subject Term: LYAPUNOV functions; Subject Term: DIFFERENTIAL equations; Subject Term: BESSEL functions; Author-Supplied Keyword: Control Lyapunov functions (CLFs); Author-Supplied Keyword: inverse optimality; Author-Supplied Keyword: nonlinear control; Author-Supplied Keyword: stability margins; Number of Pages: 13p; Document Type: Article L3 - 10.1109/TAC.2004.831176 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13966055&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Bolia, Robert S. T1 - Special Issue: Spatial Audio Displays for Military Aviation. JO - International Journal of Aviation Psychology JF - International Journal of Aviation Psychology Y1 - 2004/07// VL - 14 IS - 3 M3 - Editorial SP - 233 EP - 238 PB - Taylor & Francis Ltd SN - 10508414 AB - Editorial. Focuses on the listening environment in which military aircrew operate. Manifestation of extremely unnatural audio by levels of ambient noise; Provision of reduced sets of cues by auditory displays and intercommunication systems; Importance of hearing as a spatial sense. KW - FLIGHT crews KW - LISTENING KW - AUDITORY perception KW - NOISE KW - AUDITORY pathways KW - INTERCOMMUNICATION systems N1 - Accession Number: 13810678; Bolia, Robert S. 1; Email Address: Robert.Bolia@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory Wright-Patterson Air Force Base, OH; Source Info: 2004, Vol. 14 Issue 3, p233; Subject Term: FLIGHT crews; Subject Term: LISTENING; Subject Term: AUDITORY perception; Subject Term: NOISE; Subject Term: AUDITORY pathways; Subject Term: INTERCOMMUNICATION systems; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; Number of Pages: 6p; Document Type: Editorial UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13810678&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tannen, Robert S. AU - Nelson, W. Todd AU - Bolia, Robert S. AU - Warm, Joel S. AU - Dember, William N. T1 - Evaluating Adaptive Multisensory Displays for Target Localization in a Flight Tank. JO - International Journal of Aviation Psychology JF - International Journal of Aviation Psychology Y1 - 2004/07// VL - 14 IS - 3 M3 - Article SP - 297 EP - 312 PB - Taylor & Francis Ltd SN - 10508414 AB - This study was designed to determine the efficacy of providing target location information via head-coupled visual and spatial audio displays presented in adaptive and nonadaptive configurations. Twelve United States Air Force pilots performed a simulated flight task in which they were instructed to maintain flight parameters while searching for ground and air targets. The intergration of visual displays with spatial audio kayoing enhanced performance efficiency, especially when targets were most difficult to detect. Several of the interface conditions were also associated with lower ratings of perceived mental workload. The benefits associated with multisensory kayoing were equivalent in both adaptive and nonadaptive configurations. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aviation Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLIGHT KW - INFORMATION display systems KW - AERONAUTICAL communications systems KW - PILOTS & pilotage KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 13811684; Tannen, Robert S. 1 Nelson, W. Todd 2; Email Address: todd.Nelson@wpafb.af.mil Bolia, Robert S. 2 Warm, Joel S. 3 Dember, William N. 3; Affiliation: 1: Electronic Ink Philadelphia, PA 2: Air Force Research Laboratory Wright-Patterson Air Force Base, Ohio 3: Department of Psychology University of Cincinnati; Source Info: 2004, Vol. 14 Issue 3, p297; Subject Term: FLIGHT; Subject Term: INFORMATION display systems; Subject Term: AERONAUTICAL communications systems; Subject Term: PILOTS & pilotage; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 517919 All Other Telecommunications; NAICS/Industry Codes: 488332 Ship piloting services; NAICS/Industry Codes: 488330 Navigational Services to Shipping; NAICS/Industry Codes: 928110 National Security; Number of Pages: 16p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13811684&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ericson, Mark A. AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Factors That Influence Intelligibility in Multitalker Speech Displays. JO - International Journal of Aviation Psychology JF - International Journal of Aviation Psychology Y1 - 2004/07// VL - 14 IS - 3 M3 - Article SP - 313 EP - 334 PB - Taylor & Francis Ltd SN - 10508414 AB - Although many researchers have commented on the potential of audio displays technology to improve intelligibility in multitalker speech communication tasks, no consensus exists on how to design an "optimal" multitalker speech display. In this article, we review several experiments that have used a consistent procedure to evaluate the effect of four monaural parameters on overall intelligibility. We also present the results of a new experiment that has used the same procedure to examine the influence of 2 additional factors in binaural speech displays: (a) the apparent spatial locations of the talkers and (b) the listener's priori information about the listening task. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aviation Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFORMATION display systems KW - ORAL communication KW - TELECOMMUNICATION systems KW - RESEARCH KW - LISTENING KW - HEARING N1 - Accession Number: 13812109; Ericson, Mark A. 1; Email Address: mark.ericson@wpafb.af.mil Brungart, Douglas S. 1 Simpson, Brian D. 1; Affiliation: 1: Air Force Research Laboratory Human Effectiveness Directorate Wright-Patterson AFB, Ohio; Source Info: 2004, Vol. 14 Issue 3, p313; Subject Term: INFORMATION display systems; Subject Term: ORAL communication; Subject Term: TELECOMMUNICATION systems; Subject Term: RESEARCH; Subject Term: LISTENING; Subject Term: HEARING; NAICS/Industry Codes: 517410 Satellite Telecommunications; Number of Pages: 22p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13812109&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tzou, D.Y. AU - Chen, J.K. AU - Roybal, R. AU - Beraun, J.E. T1 - Cluster potentials for multi-scale interactions JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2004/07// VL - 47 IS - 14-16 M3 - Article SP - 2949 EP - 2959 SN - 00179310 AB - A cluster approach has been proposed to describe the process of heat transport in microscale. Molecular clustering is described by integrating the Lennard-Jones potential over specific physical domains, forming cluster potentials that possess repulsive and attractive forces sensitively varying with the geometrical shapes of the molecular clusters. The cluster potentials thus developed provides a consistent approach for describing multi-scale heat transport, in that different shapes/dimensions of the clusters take different exponents in the repulsive and attractive forces. A one-dimensional example is given to illustrate the essence of the cluster dynamics simulation, emphasizing devious behavior from molecular motion and replacement of a physical boundary by the cluster potential of a different scale. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROCLUSTERS KW - HEAT transfer KW - ENERGY transfer KW - MICROPHYSICS N1 - Accession Number: 13064637; Tzou, D.Y. 1; Email Address: tzour@missouri.edu Chen, J.K. Roybal, R. Beraun, J.E. 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, University of Missouri-Columbia, Columbia, MO 65211, USA 2: Laser Effects Research Branch, Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117, USA; Source Info: Jul2004, Vol. 47 Issue 14-16, p2949; Subject Term: MICROCLUSTERS; Subject Term: HEAT transfer; Subject Term: ENERGY transfer; Subject Term: MICROPHYSICS; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.ijheatmasstransfer.2004.03.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13064637&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Arfsten, Darryl P. AU - Johnson, Eric W. AU - Thitoff, Angie R. AU - Jung, Anne E. AU - Wilfong, Erin R. AU - Lohrke, Scott M. AU - Bausman, Tim A. AU - Eggers, Jeffrey S. AU - Bobb, Andrew J. T1 - Impact of 30-Day Oral Dosing with N-acetyl-l-cysteine on Sprague-Dawley Rat Physiology. JO - International Journal of Toxicology (Taylor & Francis) JF - International Journal of Toxicology (Taylor & Francis) Y1 - 2004/07//Jul/Aug2004 VL - 23 IS - 4 M3 - Article SP - 239 EP - 247 PB - Taylor & Francis Ltd SN - 10915818 AB - A number of studies have demonstrated a protective effect associated with N-acetyl-l-cysteine (NAC) against toxic chemical exposure. However, the impact of long-term oral dosing on tissue pathology has not been determined. In this study, the authors assessed the impact of long-term oral NAC administration on organ histopathology and tissue glutathione (GSH) and total glutathione-S-transferase (GST) activity levels in Sprague-Dawley (SD) rats. Groups of 20 SD rats (10 males, 10 females), 8 weeks of age, were dosed daily by oral gavage with deionized H2O (negative controls) or NAC solution at a rate of 600 or 1200 mg/kg/day for 30 days. Animals were euthanized 6 h after treatment on study day 30. There were no significant differences in final body weights or weekly average weight gain between treatment groups. Serum alanine aminotransferase (ALT) activities were significantly elevated (p ≤ .05) in NAC-treated animals compared to controls when measured on study day 30. Histopathologic evaluation of the stomach, small intestine, liver, kidneys, spleen, thymus, and lungs revealed no lesions associated with NAC administration. When measured on study day 30, total GST activity for kidney and skin from NAC-treated animals were increased 39% to 131% as compared to controls. Tissue GSH concentrations from NAC-treated animals were increased 24% to 81% as compared with negative controls. Further studies are needed to determine if the observed increase in tissue GSH concentration and GST activity provide a degree of chemoprotection against dermal and systemic chemical toxicants. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Toxicology (Taylor & Francis) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CYSTEINE proteinases KW - TOXICOLOGY KW - EXPERIMENTAL toxicology KW - TOXICITY testing KW - PHARMACOLOGY KW - MEDICINE KW - Glutathione KW - Glutathione-S-transferase KW - N-acetyl-L- cysteine KW - N-acetyl-lcysteine KW - Oral Toxicity KW - Rats N1 - Accession Number: 14361124; Arfsten, Darryl P. 1; Email Address: darryl.arfsten@wpafb.af.mil Johnson, Eric W. 1 Thitoff, Angie R. 1 Jung, Anne E. 1 Wilfong, Erin R. 1 Lohrke, Scott M. 1 Bausman, Tim A. 2 Eggers, Jeffrey S. 3 Bobb, Andrew J. 1; Affiliation: 1: Naval Health Research Center Environmental Health Effects Laboratory, Wright-Patterson Air Force Base, Ohio, USA 2: ManTech Inc., Wright-Patterson Air Force Base, Ohio, USA 3: Air Force Research Laboratory, Brooks Air Force Base, Texas, USA; Source Info: Jul/Aug2004, Vol. 23 Issue 4, p239; Subject Term: CYSTEINE proteinases; Subject Term: TOXICOLOGY; Subject Term: EXPERIMENTAL toxicology; Subject Term: TOXICITY testing; Subject Term: PHARMACOLOGY; Subject Term: MEDICINE; Author-Supplied Keyword: Glutathione; Author-Supplied Keyword: Glutathione-S-transferase; Author-Supplied Keyword: N-acetyl-L- cysteine; Author-Supplied Keyword: N-acetyl-lcysteine; Author-Supplied Keyword: Oral Toxicity; Author-Supplied Keyword: Rats; Number of Pages: 9p; Document Type: Article L3 - 10.1080/10915810490502041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14361124&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ferman, M. A. AU - Huttsell, L. J. AU - Turner, E. W. T1 - Experiments with Tangential Blowing to Reduce Buffet Response on an F-15 Model. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2004/07//Jul/Aug2004 VL - 41 IS - 4 M3 - Article SP - 903 EP - 910 SN - 00218669 AB - A concept employing upstream tangential blowing was investigated experimentally as a means for mitigating buffet response of fighter aircraft empennage, notably twin vertical tails. Wind-tunnel tests of a 4.7 %-scale model of the F-15 fighter were conducted in the Subsonic Aerodynamics Research Laboratory, Wright-Patterson Air Force Base, Ohio. Tangential blowing was introduced from three points: the nose, the wing-root leading edge, and the gun bump, flowing back to the tails in a Coanda-like effect. Several blowing pressure values were used at angles of attack from 0 to 32 deg. Blowing was seen to lower the buffet pressures on the tails and to reduce the structural response. The level of response, and trends varied somewhat between bending and torsion moments and acceleration data. Also, the trends depended upon angle of attack and yaw, and frequency bands. In some cases blowing actually increased the response slightly. The most effective blowing position was the wing blowing position; the gun position was the next most effective; and the nose position was the least effective. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - AIRPLANES KW - WIND tunnels KW - MECHANICS (Physics) KW - TORSION N1 - Accession Number: 14321971; Ferman, M. A. 1,2,3 Huttsell, L. J. 3,4,5 Turner, E. W. 4,6; Affiliation: 1: Parks College, St. Louis University, St. Louis Missouri 63101-1110 2: Professor Aerospace/Mechanical Engineering, 3450 Lindell Boulevard 3: Associate Fellow, AIAA 4: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542 5: Senior Aerospace Engineer, VASD, 2210 Eight Street 6: Aerospace Engineer, VASD, 2210 Eight Street; Source Info: Jul/Aug2004, Vol. 41 Issue 4, p903; Subject Term: AERODYNAMICS; Subject Term: AIRPLANES; Subject Term: WIND tunnels; Subject Term: MECHANICS (Physics); Subject Term: TORSION; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; Number of Pages: 8p; Illustrations: 1 Black and White Photograph, 2 Diagrams, 1 Chart, 12 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14321971&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Khrabrov, A. AU - Ol, M. Ol T1 - Effects of Flow Separation on Aerodynamic Loads in Linearized Thin Airfoil Theory. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2004/07//Jul/Aug2004 VL - 41 IS - 4 M3 - Article SP - 944 EP - 948 SN - 00218669 AB - Presents a study on the importance of knowing the explicit dependence of the loads on the airfoil upper-surface separation point location of an aircraft. Linear thin airfoil theory with flow separation; Comparison of analytic and computational results for airfoil in separated flow; Conclusions KW - RESEARCH KW - AEROFOILS KW - MODEL airplanes -- Wings KW - MATHEMATICAL analysis KW - AERODYNAMICS N1 - Accession Number: 14321978; Khrabrov, A. 1,2; Email Address: khrabrov@postman.ru Ol, M. Ol 3,4,5; Email Address: Michael.O1@wpafb.af.mil; Affiliation: 1: TsAGI, Russia 2: Chief, Unsteady Aerodynamics Branch, Central Aerohydrodynamics Institute 3: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542 4: Aerospace Engineer, Air Vehicles Directorate, Aeronautical Sciences Division 5: Member, AIAA; Source Info: Jul/Aug2004, Vol. 41 Issue 4, p944; Subject Term: RESEARCH; Subject Term: AEROFOILS; Subject Term: MODEL airplanes -- Wings; Subject Term: MATHEMATICAL analysis; Subject Term: AERODYNAMICS; Number of Pages: 5p; Illustrations: 2 Diagrams, 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14321978&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Billock, Vincent A. AU - Tsou, Brian H. T1 - A Role for Cortical Crosstalk in the Binding Problem: Stimulus-driven Correlations that Link Color, Form, and Motion. JO - Journal of Cognitive Neuroscience JF - Journal of Cognitive Neuroscience Y1 - 2004/07//Jul/Aug2004 VL - 16 IS - 6 M3 - Article SP - 1036 EP - 1048 PB - MIT Press SN - 0898929X AB - The putative independence of cortical mechanisms for color, form, and motion raises the binding problem—how is neural activity coordinated to create unified and correctly segmented percepts? Binding could be guided by stimulusdriven correlations between mechanisms, but the nature of these correlations is largely unexplored and no one has (intentionally) studied effects on binding if this joint information is compromised. Here, we develop a theoretical framework which: (1) describes crosstalk-generated correlations between cortical mechanisms for color, achromatic form, and motion, which arise from retinogeniculate encoding; (2) shows how these correlations can facilitate synchronization, segmentation, and binding; (3) provides a basis for understanding perceptual oddities and binding failures that occur for equiluminant and stabilized images. These ideas can be tested by measuring both perceptual events and neural activity while achromatic border contrast or stabilized image velocity is manipulated. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Cognitive Neuroscience is the property of MIT Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EVOKED potentials (Electrophysiology) KW - IMAGE KW - PERCEPTION KW - COGNITION KW - MEMORY KW - BRAIN N1 - Accession Number: 13947055; Billock, Vincent A. 1 Tsou, Brian H. 2; Affiliation: 1: General Dynamics 2: U.S. Air Force Research Laboratory.; Source Info: Jul/Aug2004, Vol. 16 Issue 6, p1036; Subject Term: EVOKED potentials (Electrophysiology); Subject Term: IMAGE; Subject Term: PERCEPTION; Subject Term: COGNITION; Subject Term: MEMORY; Subject Term: BRAIN; Number of Pages: 13p; Document Type: Article L3 - 10.1162/0898929041502742 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13947055&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ling, J. AU - Cao, Y. AU - Rivir, R. AU - MacArthur, C. T1 - Analytical Investigations of Rotating Disks With and Without Incorporating Rotating Heat Pipes. JO - Journal of Engineering for Gas Turbines & Power JF - Journal of Engineering for Gas Turbines & Power Y1 - 2004/07// VL - 126 IS - 3 M3 - Article SP - 680 EP - 683 SN - 07424795 AB - Presents closed-form analytical solutions for turbine disks cooled through both the conventional air-cooling and heat pipe cooling techniques. Separation of variables; Comparison of the temperature distributions with different heat transfer coefficients under the same geometry and boundary conditions; Ratio of maximum temperature at the disk rim surface. KW - TURBINES KW - COOLING KW - HEAT pipes KW - HEAT transfer KW - BOUNDARY value problems N1 - Accession Number: 14252004; Ling, J. 1 Cao, Y. 1 Rivir, R. 2 MacArthur, C. 2; Affiliation: 1: Department of Mechanical Engineering, Florida International University, Miami, FL 33199 2: Propulsion Directorate, Air Force Research Laboratory, Wright Patterson AFB, OH 45433; Source Info: Jul2004, Vol. 126 Issue 3, p680; Subject Term: TURBINES; Subject Term: COOLING; Subject Term: HEAT pipes; Subject Term: HEAT transfer; Subject Term: BOUNDARY value problems; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 4p; Illustrations: 2 Diagrams, 4 Graphs; Document Type: Article L3 - 10.1115/1.1760528 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14252004&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gordnier, R.E. AU - Visbal, M.R. T1 - Computation of the aeroelastic response of a flexible delta wing at high angles of attack JO - Journal of Fluids & Structures JF - Journal of Fluids & Structures Y1 - 2004/07// VL - 19 IS - 6 M3 - Article SP - 785 EP - 800 SN - 08899746 AB - To perform relevant aeroelastic analyses for a delta wing at an angle of attack, a computational technique capable of addressing both complex nonlinear aerodynamics and nonlinear structural features is presented. This numerical method couples a well-validated Euler/Navier–Stokes code (Euler computations only in present work) with a nonlinear finite-element plate model. The resulting aeroelastic solver is used to simulate a 60° sweep flexible delta wing for angles of attack from 5° to 40°. When vortex breakdown is present over the wing, increased buffeting of the wing is observed consistent with previous experimental observations. Comparisons of the computed r.m.s. wingtip acceleration with experimentally measured values shows good qualitative agreement. Spectral analysis of the wingtip deflection and acceleration show the first structural mode to be the dominant mode with participation also from the second and third mode. [Copyright &y& Elsevier] AB - Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - AERODYNAMICS KW - NAVIER-Stokes equations KW - BUFFETING (Aerodynamics) KW - Buffet KW - Delta wing KW - von Karman plate model KW - Vortex breakdown N1 - Accession Number: 13705286; Gordnier, R.E.; Email Address: raymond.gordnier@wpafb.af.mil Visbal, M.R. 1; Email Address: miguel.visbal@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, AFRL/VAAC, Building 146 Room 225, 2210 Eighth Street, Wright-Patterson AFB, OH 45433-7512, USA; Source Info: Jul2004, Vol. 19 Issue 6, p785; Subject Term: AEROELASTICITY; Subject Term: AERODYNAMICS; Subject Term: NAVIER-Stokes equations; Subject Term: BUFFETING (Aerodynamics); Author-Supplied Keyword: Buffet; Author-Supplied Keyword: Delta wing; Author-Supplied Keyword: von Karman plate model; Author-Supplied Keyword: Vortex breakdown; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.jfluidstructs.2004.04.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13705286&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rogers AU - J. E. AU - Slagle AU - McLean AU - D. G. AU - Sutherland AU - R. L. AU - Sankaran AU - B. AU - Kannan AU - R. AU - Tan AU - L.-S. AU - Fleitz AU - P. A. T1 - Understanding the One-Photon Photophysical Properties of a Two-Photon Absorbing Chromophore. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2004/07// VL - 108 IS - 26 M3 - Article SP - 5514 EP - 5520 SN - 10895639 AB - A comprehensive one-photon photophysical study has been carried out on AF455, a known two-photon absorbing dye. AF455 is composed of an electron-accepting center with three arms that consist of a π-conjugated group with an electron-donating group at the terminal end of each arm. The objective of this work is to understand the one-photon excitation photophysical properties so that this knowledge will be carried into understanding the two-photon absorption properties. This was done by utilizing steady-state absorption, steady-state and time-resolved emission, femtosecond pump-probe, and nanosecond laser flash photolysis techniques. Through this study it was determined that AF455 undergoes an excited-state intramolecular charge transfer (ICT) upon absorption of a single photon. The extent of ICT stabilization is dependent on the solvent polarity, with increasing ICT stabilization in more polar solvents. The formation of the triplet excited state is small (<8%) and is effected only slightly by a change in the solvent polarity. With an increase in polarity the fluorescence quantum yield decreased and internal conversion was found to become more competitive. On the basis of a two-photon assisted excited-state absorption model we tied in the measured one-photon photophysical properties to understand why the nanosecond effective two-photon absorption cross section is much larger than the femtosecond intrinsic two-photon absorption cross section. We found that AF455 exhibits triplet excited-state absorption in the region of 800 nm that leads to enhancement of the nanosecond effective two-photon absorption cross section. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTONS KW - ELECTRONS KW - ABSORPTION KW - EMISSIONS (Air pollution) N1 - Accession Number: 14594159; Rogers J. E. 1 Slagle McLean D. G. 1 Sutherland R. L. 1 Sankaran B. 1 Kannan R. 1 Tan L.-S. 1 Fleitz P. A. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, 3005 Hobson Way, Bldg 651, Wright Patterson Air Force Base, Ohio 45433, UES, Inc., Dayton, Ohio 45432, AT&T Government Solutions, Dayton, Ohio 45324, Science Applications International Corporation, Dayton, Ohio 45434, Anteon Corporation, Dayton, Ohio 45431, and Systran Systems Corporation, Dayton, Ohio 45432; Source Info: Jul2004, Vol. 108 Issue 26, p5514; Subject Term: PHOTONS; Subject Term: ELECTRONS; Subject Term: ABSORPTION; Subject Term: EMISSIONS (Air pollution); Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14594159&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller AU - S. M. AU - Hunter AU - M. T1 - O(1D) Branching Fraction from the Reaction N(2D) + O2 → NO(2Π,v,J) + O(3P,1D). JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2004/07// VL - 108 IS - 26 M3 - Article SP - 5588 EP - 5599 SN - 10895639 AB - The reaction N(2D) + O2 → NO(2Π,v,J) + O(3P,1D) has been considered for many years as a possible source of O(1D) in the thermosphere. We have used the Cold Chemical Infrared Simulation Experiment (COCHISE) facility to determine an upper limit to the O(1D) branching fraction of this reaction by observing the absence of the radiative decay of O(1D) and O2(b1Σ) produced by efficient energy exchange with O2. By carefully modeling the kinetic and fluid dynamics of the experiment, an upper limit of 0.02 ± 0.02 was found for the branching fraction into the O(1D) product channel. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BRANCHING ratios (Nuclear physics) KW - DECAY schemes (Radioactivity) KW - FLUID dynamics KW - THERMOSPHERE N1 - Accession Number: 14594169; Miller S. M. 1 Hunter M. 1; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, AFRL/VSBYM, Hanscom Air Force Base, 29 Randolph Road, Bedford, Massachusetts 01731-3010; Source Info: Jul2004, Vol. 108 Issue 26, p5588; Subject Term: BRANCHING ratios (Nuclear physics); Subject Term: DECAY schemes (Radioactivity); Subject Term: FLUID dynamics; Subject Term: THERMOSPHERE; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14594169&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Caldwell Jr., John A. AU - Caldwell, J. Lynn AU - Brown, David L. AU - Smith, Jennifer K. T1 - The Effects of 37 Hours of Continuous Wakefulness On the Physiological Arousal, Cognitive Performance, Self-Reported Mood, and Simulator Flight Performance of F-l 17A Pilots. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2004/07// VL - 16 IS - 3 M3 - Article SP - 163 EP - 181 PB - Taylor & Francis Ltd SN - 08995605 AB - Pilot fatigue poses a serious threat to operational safety, but understanding the nature of the problem and the times at which pilots are most at risk will facilitate operationally relevant fatigue-management strategies. This investigation sought to address these issues in a controlled investigation of the impact of sustained wakefulness on Air Force aviators. Ten current and qualified F-117 pilots completed the Multi-Attribute Task Battery (MATB), the Profile of Mood States (POMS), a resting eyes-open and eyes-closed EEG, and a standardized flight evaluation in an F-117 flight simulator at 5-hr intervals during the final 23 hours of a 37-hr period of continuous wakefulness. Results indicated significant decrements in mood, cognition, central nervous system activation, and flight skills began to occur in the predawn hours during a night without sleep. However, the most serious operationally relevant decrements appeared at approximately 0700 (after 25 hours without sleep) and persisted throughout the remainder of the deprivation period. The decrements suggested in the real world crew coordination likely will decline, information processing will become impaired, and a wide array of basic capabilities will be degraded as a result of compromised vigilance, poor situational awareness, and sluggish reaction time. Even the well-practiced flight skills of experienced pilots are clearly susceptible to the insidious effects of sleep loss. These quantified effects of untreated sleep deprivation will provide a baseline against which promising countermeasures can be assessed. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAKEFULNESS KW - SLEEP-wake cycle KW - FIGHTER pilots KW - MILITARY air pilots KW - MILITARY psychology KW - PSYCHOLOGY N1 - Accession Number: 14044110; Caldwell Jr., John A. 1; Email Address: john.caldwell@brooks.af.mil Caldwell, J. Lynn 1 Brown, David L. 2 Smith, Jennifer K. 1; Affiliation: 1: U.S. Air Force Research Laboratory 2: School of Aerospace Medicine; Source Info: Jul2004, Vol. 16 Issue 3, p163; Subject Term: WAKEFULNESS; Subject Term: SLEEP-wake cycle; Subject Term: FIGHTER pilots; Subject Term: MILITARY air pilots; Subject Term: MILITARY psychology; Subject Term: PSYCHOLOGY; Number of Pages: 19p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14044110&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ashcroft, Bruce AU - de la Teja, Jesús F. T1 - The Royal Air Force in Texas: Training British Pilots in Terrell during World War II. JO - Southwestern Historical Quarterly JF - Southwestern Historical Quarterly Y1 - 2004/07// VL - 108 IS - 1 M3 - Book Review SP - 124 EP - 125 SN - 0038478X AB - Reviews the book "The Royal Air Force in Texas: Training British Pilots in Terrell during World War II," by Tom Killebrew. KW - AIR pilots KW - NONFICTION KW - KILLEBREW, Tom KW - ROYAL Air Force in Texas: Training British Pilots in Terrell During World War II, The (Book) N1 - Accession Number: 17954931; Ashcroft, Bruce 1 de la Teja, Jesús F.; Affiliation: 1: Air Education and Training Command History Office, San Antonio; Source Info: Jul2004, Vol. 108 Issue 1, p124; Subject Term: AIR pilots; Subject Term: NONFICTION; Reviews & Products: ROYAL Air Force in Texas: Training British Pilots in Terrell During World War II, The (Book); People: KILLEBREW, Tom; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17954931&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chickering, Roger AU - Porch, Douglas AU - Yorke, Edmund J. AU - Neiberg, Michael AU - Bowman, Timothy AU - Hamilton, C. I. T1 - Book Reviews. JO - War in History JF - War in History Y1 - 2004/07// VL - 11 IS - 3 M3 - Book Review SP - 358 EP - 372 PB - Sage Publications, Ltd. SN - 09683445 AB - Reviews several books."Civilians in the Path of War," edited by Mark Grimsley and Clifford J. Rogers; "Soldiers, Commissars, and Chaplains: Civil-Military Relations since Cromwell," by Dale R. Herspring; "Zulu Victory: The Epic of Isandlwana and the Cover-up," by Ron Lock and Peter Quantrill; "A Rain of Lead: The Siege and Surrender of the British at Potchefstroom," by Ian Bennett. KW - NONFICTION KW - GRIMSLEY, Mark KW - ROGERS, Clifford J. KW - HERSPRING, Dale R. (Dale Roy) KW - LOCK, Ron KW - QUANTRILL, Peter KW - BENNETT, Ian KW - SOLDIERS, Commissars & Chaplains (Book) KW - ZULU Victory: The Epic of Isandlwana & the Cover-Up (Book) KW - RAIN of Lead, A (Book) N1 - Accession Number: 13112815; Chickering, Roger 1 Porch, Douglas 2 Yorke, Edmund J. 3 Neiberg, Michael 4 Bowman, Timothy 5 Hamilton, C. I. 6; Affiliation: 1: Georgetown University. 2: Naval Postgraduate School, California. 3: Royal Military Academy, Sandhurst. 4: United States Air Force Academy. 5: University of Durham. 6: University of the Witwatersrand.; Source Info: Jul2004, Vol. 11 Issue 3, p358; Subject Term: NONFICTION; Reviews & Products: SOLDIERS, Commissars & Chaplains (Book); Reviews & Products: ZULU Victory: The Epic of Isandlwana & the Cover-Up (Book); Reviews & Products: RAIN of Lead, A (Book); People: GRIMSLEY, Mark; People: ROGERS, Clifford J.; People: HERSPRING, Dale R. (Dale Roy); People: LOCK, Ron; People: QUANTRILL, Peter; People: BENNETT, Ian; Number of Pages: 15p; Document Type: Book Review L3 - 10.1191/0968344504wh304xx UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13112815&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fajardo, Mario E. AU - Tam, Simon AU - DeRose, Michelle E. T1 - Matrix isolation spectroscopy of H2O, D2O, and HDO in solid parahydrogen JO - Journal of Molecular Structure JF - Journal of Molecular Structure Y1 - 2004/06/30/ VL - 695-696 M3 - Article SP - 111 EP - 127 SN - 00222860 AB - We present infrared (IR) absorption spectra over the 800–7800 cm-1 region of cryogenic parahydrogen (pH2) solids doped with H2O, D2O and HDO molecules. Analysis of the rovibrational spectra of the isolated H2O, D2O and HDO monomers reveals their existence as very slightly hindered rotors, typically showing only 2–5% reductions in rotational constants relative to the gas phase. The nuclear spin conversion (NSC) of metastable J=1 ortho-H2O (oH2O) and para-D2O (pD2O) molecules follow first order kinetics, with single exponential decay lifetimes at T=2.4 K of 1900±100 s, and 860±50 s, respectively. We report without discussion some absorptions of water clusters produced during sample annealing. We report and assign a number of absorptions to oH2–water pairs or ‘complexes’. The main features of the oH2–H2O and oH2–D2O spectra are explained qualitatively by assuming a semi-rigid C2v structure with the oH2 acting as a proton donor to the O atom. Surprisingly, NSC of oH2–water complexes proceeds at very nearly the same rate as for the corresponding water monomer. We report unassigned spectra of larger (oH2)n–water clusters, and the even more surprising observation of the prolonged survival of oH2O and pD2O molecules clustered with several oH2 molecules. We report and assign a number of water dopant-induced IR absorption features of the pH2 host, along with cooperative water–pH2 transitions in which the vibrational excitation of the pH2 solid is accompanied by a pure rotational transition of the water dopant. [Copyright &y& Elsevier] AB - Copyright of Journal of Molecular Structure is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATRIX isolation spectroscopy KW - ABSORPTION KW - NUCLEAR magnetic resonance KW - SPECTRUM analysis KW - Cooperative absorption KW - Dopant-induced IR activity KW - Matrix isolation spectroscopy KW - Nuclear spin conversion KW - Solid parahydrogen N1 - Accession Number: 13182222; Fajardo, Mario E.; Email Address: mario.fajardo@eglin.af.mil Tam, Simon DeRose, Michelle E. 1; Affiliation: 1: Propulsion Directorate, US Air Force Research Laboratory, AFRL/PRSP, Bldg. 8451, Edwards AFB, CA 93524-7680, USA; Source Info: Jun2004, Vol. 695-696, p111; Subject Term: MATRIX isolation spectroscopy; Subject Term: ABSORPTION; Subject Term: NUCLEAR magnetic resonance; Subject Term: SPECTRUM analysis; Author-Supplied Keyword: Cooperative absorption; Author-Supplied Keyword: Dopant-induced IR activity; Author-Supplied Keyword: Matrix isolation spectroscopy; Author-Supplied Keyword: Nuclear spin conversion; Author-Supplied Keyword: Solid parahydrogen; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.molstruc.2003.11.043 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13182222&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H. J. AU - Szmulowicz, F. AU - Brown, G. J. AU - Mahalingam, K. T1 - Optimization of mid-infrared InAs/GaSb type-II superlattices. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/06/28/ VL - 84 IS - 26 M3 - Article SP - 5410 EP - 5412 PB - American Institute of Physics SN - 00036951 AB - The effect of small changes in GaSb layer width on the photoresponse spectrum of 20.5 Å InAs/InSb-interfaces/X Å GaSb type-II superlattice (SL) suitable for mid-infrared detection was investigated. By decreasing the GaSb width X from 27 to 18 Å, the cut-off wavelength was increased from 4.03 to 4.55 μm. This decrease of the SL bond gap and other effects of the design changes on photoresponse spectrum with narrower GaSb layers are explained by a nonperturbative, modified envelope function approximation calculation that includes the interface coupling of heavy, light, and spin orbit boles resulting from the in-plane asymmetry at InAs/GaSb interfaces. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRUCTURAL optimization KW - INFRARED radiation KW - ELECTROMAGNETIC waves KW - SEMICONDUCTORS KW - SUPERLATTICES KW - HETEROSTRUCTURES KW - INTERFACES (Physical sciences) N1 - Accession Number: 13495680; Haugan, H. J. 1; Email Address: heather.haugan@wpafb.af.mil Szmulowicz, F. 1 Brown, G. J. 1 Mahalingam, K. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB, Ohio; Source Info: 6/28/2004, Vol. 84 Issue 26, p5410; Subject Term: STRUCTURAL optimization; Subject Term: INFRARED radiation; Subject Term: ELECTROMAGNETIC waves; Subject Term: SEMICONDUCTORS; Subject Term: SUPERLATTICES; Subject Term: HETEROSTRUCTURES; Subject Term: INTERFACES (Physical sciences); NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 2 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.1767598 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13495680&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yarbrough, S. A. AU - Flake, B. A. AU - Razani, A. T1 - Computational Fluid Dynamic Modeling of Pressure Drop through Wire Mesh Screen Regenerators. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/23/ VL - 710 IS - 1 M3 - Article SP - 1138 EP - 1145 PB - American Institute of Physics SN - 0094243X AB - The use of computational fluid dynamics (CFD) to model complex cryocooler components and systems has been rare until the last few years. With more computational power and robust CFD codes available, the ability to create CFD models is becoming a reality. Efforts to characterize and predict flow through the regenerator have been ongoing for 50 years. Use of computational fluid dynamics (CFD) to predict pressure drop through regenerator wire mesh screens would facilitate development of a cryocooler system model. Three types of CFD regenerator models are presented. The modeling results are compared and the most promising candidate for integration into a system level model is discussed. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUID dynamics KW - FLUID mechanics KW - CRYOELECTRONICS KW - LOW temperature engineering KW - SYSTEM integration KW - WIRE screens N1 - Accession Number: 13868949; Yarbrough, S. A. 1 Flake, B. A. 1 Razani, A. 2; Affiliation: 1: Space Vehicles Directorate Air Force Research Laboratory Albuquerque, NM 87117, USA 2: University of New Mexico Department of Mechanical Engineering Albuquerque, NM 87131, USA; Source Info: 2004, Vol. 710 Issue 1, p1138; Subject Term: FLUID dynamics; Subject Term: FLUID mechanics; Subject Term: CRYOELECTRONICS; Subject Term: LOW temperature engineering; Subject Term: SYSTEM integration; Subject Term: WIRE screens; NAICS/Industry Codes: 321911 Wood Window and Door Manufacturing; NAICS/Industry Codes: 541512 Computer Systems Design Services; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.1774799 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13868949&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roberts, Thomas P. AU - Desai, Prateen V. T1 - Working Fluid State Properties Measurements in Medium and High Frequency Cryocoolers. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/23/ VL - 710 IS - 1 M3 - Article SP - 1146 EP - 1153 PB - American Institute of Physics SN - 0094243X AB - The measurement of the internal thermodynamic states in operational cryocoolers has been an experimental challenge of long standing. An experimental data acquisition system is described which uses high frequency pressure and hot wire anemometry transducers to measure the pressure, temperature, and mass flow within a working Stirling cycle refrigerator operating in the 20 to 60 hertz frequency range. Problems with establishing refrigerator hermeticity and instrumentation calibrations are discussed and the solutions which were used are detailed. A subset of the empirical data obtained by the experimental effort is shown in order to demonstrate how working fluid equations of state can be used to describe refrigeration component performance and estimate how components contribute to overall system characteristics. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMODYNAMICS KW - CRYOELECTRONICS KW - LOW temperature engineering KW - PRESSURE KW - TEMPERATURE KW - WIND speed -- Measurement KW - TRANSDUCERS N1 - Accession Number: 13868948; Roberts, Thomas P. 1 Desai, Prateen V. 2; Affiliation: 1: Space Vehicle Directorate, AFRL/VSSS Air Force Research Laboratory Kirtland AFB, NM 87117, USA 2: George Woodruff School of Mechanical Engineering Georgia Institute of Technology Atlanta, GA 30332, USA; Source Info: 2004, Vol. 710 Issue 1, p1146; Subject Term: THERMODYNAMICS; Subject Term: CRYOELECTRONICS; Subject Term: LOW temperature engineering; Subject Term: PRESSURE; Subject Term: TEMPERATURE; Subject Term: WIND speed -- Measurement; Subject Term: TRANSDUCERS; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.1774800 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13868948&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davis, Thomas M. AU - Adam Smith, D. AU - Easton, Ryan M. T1 - Air Force Research Laboratory Cryocooler Technology Development. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/23/ VL - 710 IS - 1 M3 - Article SP - 1205 EP - 1212 PB - American Institute of Physics SN - 0094243X AB - This paper presents an overview of the cryogenic refrigerator and cryogenic integration programs in development and characterization under the Cryogenic Cooling Technology Group, Space Vehicles Directorate of the Air Force Research Laboratory (AFRL). The vision statement for the group is to support the space community as the center of excellence for developing and transitioning space cryogenic thermal management technologies. This paper will describe the range of Stirling, pulse tube; reverse Brayton, and Joule-Thomson cycle cryocoolers currently under development to meet current and future Air Force and Department of Defense requirements. Cooling requirements at 10K, 35K, 60K, 95K, and multistage cooling requirements at 35/85K are addressed. In order to meet these various requirements, the Air Force Research Laboratory, Space Vehicles Directorate is pursuing various strategic cryocooler and cryogenic integration options. The Air Force Research Laboratory, working with industry partners, is also developing several advanced cryogenic integration technologies that will result in the reduction in current cryogenic system integration penalties and design time. These technologies include the continued development of gimbaled transport systems, 35K and 10K thermal storage units, heat pipes, cryogenic straps, and thermal switches. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYOELECTRONICS KW - LOW temperature engineering KW - SPACE colonies KW - BRAYTON cycle KW - SPACE vehicles KW - UNITED States. Dept. of Defense KW - UNITED States. Air Force N1 - Accession Number: 13868941; Davis, Thomas M. 1 Adam Smith, D. 1 Easton, Ryan M. 1; Affiliation: 1: Air Force Research Laboratory Kirtland AFB, NM 87117-5776; Source Info: 2004, Vol. 710 Issue 1, p1205; Subject Term: CRYOELECTRONICS; Subject Term: LOW temperature engineering; Subject Term: SPACE colonies; Subject Term: BRAYTON cycle; Subject Term: SPACE vehicles; Company/Entity: UNITED States. Dept. of Defense Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 928110 National Security; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.1774807 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13868941&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Oliver, E. AU - Yarbrough, S. A. AU - Abhyankar, N. S. AU - Tomlinson, B. J. T1 - Air Force Research Laboratory Spacecraft Cryocooler Endurance Evaluation Update: 2000–2002. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/23/ VL - 710 IS - 1 M3 - Article SP - 1221 EP - 1228 PB - American Institute of Physics SN - 0094243X AB - Long-life evaluation data for space cryocoolers is essential for performance and reliability assessments of this technology. With a design life of 10 or more years, and no accepted accelerated testing methodology, the importance of continual real time operations monitoring and periodic retesting is paramount. The Air Force Research Laboratory (AFRL), under sponsorship from the Missile Defense Agency (MDA) and Space Tracking and Surveillance System (STSS), has been evaluating life performance of space cryocooler technology for many years providing raw data and detailed evaluations to system designers and cryocooler developers for advancing the technology, correcting discovered deficiencies, and improving cryocooler designs. At AFRL, units of varying designs and refrigeration cycles are instrumented in state-of-the-art experiment stands that provide space-like conditions and are equipped with software data acquisition to track critical cryocooler operating parameters. The collected data allows an assessment of the technology’s ability to meet the desired lifetime and documents any long-term changes in performance. This paper includes observations and lessons learned from the endurance evaluation of six cryocoolers at AFRL for the period 2000–2002. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYOELECTRONICS KW - LOW temperature engineering KW - MILITARY aeronautics -- Research KW - ENDURANCE flights KW - AERONAUTICS -- Flights KW - UNITED States. Missile Defense Agency KW - UNITED States. Air Force N1 - Accession Number: 13868939; Oliver, E. 1 Yarbrough, S. A. 1 Abhyankar, N. S. 2 Tomlinson, B. J. 3; Affiliation: 1: Space Vehicle Directorate, AFRL/VSSS Air Force Research Laboratory Kirtland AFB, NM 87117, USA 2: Dynacs Military and Defense Inc. 1900 Randolph Rd. SE, Suite D Albuquerque, NM 87106, USA 3: SMDC-RD-TE-H, HELSTF White Sands Missile Range, NM; Source Info: 2004, Vol. 710 Issue 1, p1221; Subject Term: CRYOELECTRONICS; Subject Term: LOW temperature engineering; Subject Term: MILITARY aeronautics -- Research; Subject Term: ENDURANCE flights; Subject Term: AERONAUTICS -- Flights; Company/Entity: UNITED States. Missile Defense Agency Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.1774809 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13868939&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abhyankar, Nandu AU - Roberts, Tom AU - Davis, Thorn AU - Tomlinson, B. J. T1 - Performance Degradation of Cryocoolers for Space Applications. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/23/ VL - 710 IS - 1 M3 - Article SP - 1231 EP - 1238 PB - American Institute of Physics SN - 0094243X AB - The Cryogenic Cooling Technology Group at the US Air Force Research Laboratory supports development of prototype cryocoolers to meet Department of Defense requirements for space surveillance and target detection. Some coolers have shown deterioration in performance during the detailed laboratory characterization and endurance evaluation. Some of them have shown anomalies due to material choice, contamination, manufacturing defects, or some yet unknown factors. The degradation is either manifested gradually, such as due to leaks, or abruptly, such as vibration-noise. The general causes and concerns for space cryocooler performance degradation are presented in the beginning followed by case studies of some of the developmental coolers, given in order to communicate lessons learned to the cryocooler community. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOW temperature engineering KW - CRYOELECTRONICS KW - SPACE surveillance KW - COMPRESSORS KW - GAS-lubricated bearings KW - OUTGASSING (Low pressure environments) N1 - Accession Number: 13868938; Abhyankar, Nandu 1 Roberts, Tom 2 Davis, Thorn 2 Tomlinson, B. J. 3; Affiliation: 1: Dynacs Military and Defense Inc. 1900 Randolph Rd. SE, Suite D Albuquerque, NM 87106, USA 2: Space Vehicle Directorate, AFRL/VSSS Air Force Research Laboratory Kirtland AFB, NM 87117, USA 3: SMDC-RD-TE-H, HELSTF White Sands Missile Range, NM; Source Info: 2004, Vol. 710 Issue 1, p1231; Subject Term: LOW temperature engineering; Subject Term: CRYOELECTRONICS; Subject Term: SPACE surveillance; Subject Term: COMPRESSORS; Subject Term: GAS-lubricated bearings; Subject Term: OUTGASSING (Low pressure environments); NAICS/Industry Codes: 333910 Pump and compressor manufacturing; NAICS/Industry Codes: 423830 Industrial Machinery and Equipment Merchant Wholesalers; NAICS/Industry Codes: 333912 Air and Gas Compressor Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.1774810 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13868938&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yarbrough, S. A. AU - Abhyankar, N. AU - Tomlinson, B. J. AU - Davis, T. M. T1 - Performance Characterization of the TRW 95 K High Efficiency Cryocooler. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/23/ VL - 710 IS - 1 M3 - Article SP - 1277 EP - 1284 PB - American Institute of Physics SN - 0094243X AB - This paper presents results from characterization studies performed on the Northrop Grumman Space Technology, formerly TRW, 95 K High Efficiency Cryocooler at the Air Force Research Laboratory (AFRL) Cryogenic Technology Research Facility. This pulse tube cryocooler unit is capable of lifting 10 W heat loads at 95 K, and has demonstrated the highest efficiency performance at this temperature range for space cryocoolers characterized at AFRL. Physical characteristics of the test setup for the cooler are described in the paper. Results are presented for the cryocooler over a wide range of operating parameters and environmental conditions. Effects of varying heat rejection temperature, compressor drive input, and heat loads on the input power and cold end temperatures are examined as well as the cold end temperature stability. In addition, the effect of orientation on the cryocooler’s performance is presented. The cooler has entered life-test mode with accumulation of over 5000 of run-time hours. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TECHNOLOGY KW - RESEARCH KW - LABORATORIES KW - TEMPERATURE KW - COMPRESSORS KW - PHYSICS N1 - Accession Number: 13868933; Yarbrough, S. A. 1 Abhyankar, N. 2 Tomlinson, B. J. 3 Davis, T. M. 1; Affiliation: 1: Space Vehicles Directorate Air Force Research Laboratory Albuquerque, NM 87117 USA 2: Dynacs Engineering Co Albuquerque, NM 87117 USA 3: SMDC-RD-TE-H, HELSTF White Sands Missile Range, NM 88002 USA; Source Info: 2004, Vol. 710 Issue 1, p1277; Subject Term: TECHNOLOGY; Subject Term: RESEARCH; Subject Term: LABORATORIES; Subject Term: TEMPERATURE; Subject Term: COMPRESSORS; Subject Term: PHYSICS; NAICS/Industry Codes: 423830 Industrial Machinery and Equipment Merchant Wholesalers; NAICS/Industry Codes: 333912 Air and Gas Compressor Manufacturing; NAICS/Industry Codes: 333910 Pump and compressor manufacturing; NAICS/Industry Codes: 621511 Medical Laboratories; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 541940 Veterinary Services; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.1774815 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13868933&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Flake, Barrett AU - Razani, Arsalan T1 - Modeling Pulse Tube Cryocoolers with CFD. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/23/ VL - 710 IS - 1 M3 - Article SP - 1493 EP - 1499 PB - American Institute of Physics SN - 0094243X AB - A commercial computational fluid dynamics (CFD) software package is used to model the oscillating flow inside a pulse tube cryocooler. Capabilities for modeling pulse tubes are demonstrated with preliminary case studies and the results presented. The 2D axi-symmetric simulations demonstrate the time varying temperature and velocity fields in the tube along with computation of the heat fluxes at the hot and cold heat exchangers. The only externally imposed boundary conditions are a cyclically moving piston wall at one end of the tube and constant temperature or heat flux boundaries at the external walls of the hot and cold heat exchangers. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUID dynamics KW - COMPUTER software KW - OSCILLATIONS KW - TEMPERATURE KW - HEAT exchangers KW - PHYSICS N1 - Accession Number: 13868905; Flake, Barrett 1 Razani, Arsalan 2; Affiliation: 1: Air Force Research Laboratory Kirtland AFB, New Mexico, 87117, USA 2: University of New Mexico Albuquerque, New Mexico, 87131, USA; Source Info: 2004, Vol. 710 Issue 1, p1493; Subject Term: FLUID dynamics; Subject Term: COMPUTER software; Subject Term: OSCILLATIONS; Subject Term: TEMPERATURE; Subject Term: HEAT exchangers; Subject Term: PHYSICS; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); NAICS/Industry Codes: 332410 Power Boiler and Heat Exchanger Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1063/1.1774843 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13868905&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Razani, A. AU - Flake, B. AU - Yarbrough, S. T1 - Exergy Flow in Pulse Tube Refrigerators and Their Performance Evaluation Based on Exergy Analysis. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/23/ VL - 710 IS - 1 M3 - Article SP - 1508 EP - 1518 PB - American Institute of Physics SN - 0094243X AB - Exergy flow in Orifice Pulse Tube Refrigerators (OPTR) is investigated. Input power to the compressor provides the source of exergy and the input exergy’s magnitude diminishes as working fluid passes through each component. The exergy destruction is due to the irreversibility of each component in the refrigerator. The only product of the system is the exergy associated with the refrigeration power. It is shown that for an ideal OPTR, where the orifice is the only source of irreversibility, the exergy destruction is equivalent to the refrigeration power resulting in a second law efficiency of (Th - Tc)/ Th for the system. A model for the effect of different system parameters on the irreversibility of the compressor, regenerator, and orifice is developed and exergy flow in the system is analyzed. A proper definition of the second law efficiency for each component is given and it is shown that exergy analysis is a powerful method for understanding the mechanism, performance evaluation, design, and optimization of the pulse tube refrigerator. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXERGY KW - REFRIGERATORS KW - REFRIGERATION & refrigerating machinery KW - FORCE & energy KW - THERMODYNAMICS KW - LOW temperature engineering KW - PHYSICS KW - PHYSICAL sciences N1 - Accession Number: 13868903; Razani, A. 1,2 Flake, B. 1 Yarbrough, S. 1; Affiliation: 1: Air Force Research Laboratory Kirtland AFB, NM, USA 87117-5776 2: The University of New Mexico Albuquerque, NM 87131; Source Info: 2004, Vol. 710 Issue 1, p1508; Subject Term: EXERGY; Subject Term: REFRIGERATORS; Subject Term: REFRIGERATION & refrigerating machinery; Subject Term: FORCE & energy; Subject Term: THERMODYNAMICS; Subject Term: LOW temperature engineering; Subject Term: PHYSICS; Subject Term: PHYSICAL sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 333416 Heating equipment and commercial refrigeration equipment manufacturing; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 333415 Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing; NAICS/Industry Codes: 423740 Refrigeration Equipment and Supplies Merchant Wholesalers; NAICS/Industry Codes: 423620 Household Appliances, Electric Housewares, and Consumer Electronics Merchant Wholesalers; NAICS/Industry Codes: 414220 Household appliance merchant wholesalers; NAICS/Industry Codes: 443143 Appliance, television and other electronics stores; NAICS/Industry Codes: 335223 Major kitchen appliance manufacturing; NAICS/Industry Codes: 811412 Appliance Repair and Maintenance; NAICS/Industry Codes: 335222 Household Refrigerator and Home Freezer Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1063/1.1774845 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13868903&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Razani, A. AU - Flake, B. AU - Yarbrough, S. AU - Abhyankar, N. S. T1 - A Power-Efficiency Diagram for Performance Evaluation of Cryocoolers. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/23/ VL - 710 IS - 1 M3 - Article SP - 1527 EP - 1535 PB - American Institute of Physics SN - 0094243X AB - The power-efficiency diagram is a simple and convenient tool to characterize the performance of energy systems. In exergy analysis, the power and efficiency can be represented by the rate of exergy transfer to the cold reservoir and the exergetic efficiency of the cryocooler, respectively. Examples from the thermal performance plots generated in our laboratory indicate that the power-efficiency diagram for cryocoolers are loop-shaped curves characterized by a compromise between power (exergy transfer rate to the cold reservoir) and the exergetic efficiency of the system. The effect of heat rejection temperature on system irreversibility and efficiency is investigated. A simple thermal model, including system heat-leak and heat-rejection temperature, for pulse tube cryocoolers is developed to evaluate the irreversibility due to thermal losses as compared to minimum system irreversibility. Based on non-equilibrium thermodynamic analysis, thermodynamic forces and fluxes for both the driver process (electrical energy) and the driven process (cooling) are identified for pulse tube cryocoolers and the phenomenological relations characterizing the Orifice Pulse Tube Refrigerator (OPTR) is found to be nonlinear. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WALK-in coolers & freezers KW - REFRIGERATION & refrigerating machinery KW - LOW temperature engineering KW - THERMODYNAMICS KW - PHYSICS KW - PHYSICAL sciences N1 - Accession Number: 13868901; Razani, A. 1,2 Flake, B. 1 Yarbrough, S. 1 Abhyankar, N. S. 3; Affiliation: 1: Air Force Research Laboratory Kirtland AFB, NM, USA 87117-5776 2: The University of New Mexico Albuquerque, NM 87131 3: Dynacs Engineering Co. Albuquerque, NM 87106-4266; Source Info: 2004, Vol. 710 Issue 1, p1527; Subject Term: WALK-in coolers & freezers; Subject Term: REFRIGERATION & refrigerating machinery; Subject Term: LOW temperature engineering; Subject Term: THERMODYNAMICS; Subject Term: PHYSICS; Subject Term: PHYSICAL sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 423740 Refrigeration Equipment and Supplies Merchant Wholesalers; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 333415 Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing; NAICS/Industry Codes: 333416 Heating equipment and commercial refrigeration equipment manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1063/1.1774847 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13868901&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zagarola, M. V. AU - Dietz, A. J. AU - Swift, W. L. AU - Davis, T. M. T1 - 35 K Turbo-Brayton Cryocooler Technology. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/23/ VL - 710 IS - 1 M3 - Article SP - 1635 EP - 1642 PB - American Institute of Physics SN - 0094243X AB - Future Department of Defense missions will require efficient, low mass, reliable mechanical cryocoolers. Loads of 2 W to 8 W at 35 K are anticipated, combined with higher loads at higher temperatures for optical benches and shielding. A single, multistage cryocooler that can supply refrigeration to several loads at distributed locations without significant penalties in performance has the potential for dramatic reductions in overall mass, system complexity, and input power when compared to multiple single-point coolers. In early 2002, a single-stage turbo-Brayton cryocooler was installed on the Hubble Space Telescope to cool the NICMOS instrument. The NICMOS Cryogenic Cooler (NCC) returned the instrument to operation within one month of installation and has maintained the instrument at optimum temperature since that time. The NCC provides 7 W of cooling at 70 K. Recently completed efforts have demonstrated a single-stage cryocooler using comparable technology that provides 3 W to 4 W of refrigeration at a temperature of 35 K. These test results were used as the foundation for a two-stage 35 K turbo-Brayton cryocooler. The test results and the design of a two-stage 35 K cryocooler are the subjects of this paper. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOAD (Electric power) KW - COOLING KW - MASS (Serials control system) KW - REFRIGERATION & refrigerating machinery KW - LOW temperature engineering KW - PHYSICS KW - PHYSICAL sciences N1 - Accession Number: 13868887; Zagarola, M. V. 1 Dietz, A. J. 1 Swift, W. L. 1 Davis, T. M. 2; Affiliation: 1: Creare Inc. Hanover, New Hampshire 03755, USA 2: Air Force Research Laboratory Space Vehicle Directorate Space Cryogenic Technology Group Kirtland AFB, New Mexico 87117, USA; Source Info: 2004, Vol. 710 Issue 1, p1635; Subject Term: LOAD (Electric power); Subject Term: COOLING; Subject Term: MASS (Serials control system); Subject Term: REFRIGERATION & refrigerating machinery; Subject Term: LOW temperature engineering; Subject Term: PHYSICS; Subject Term: PHYSICAL sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 423740 Refrigeration Equipment and Supplies Merchant Wholesalers; NAICS/Industry Codes: 333415 Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing; NAICS/Industry Codes: 333416 Heating equipment and commercial refrigeration equipment manufacturing; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.1774861 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13868887&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grote AU - J. G. AU - Hagen AU - J. A. AU - Zetts AU - J. S. AU - Nelson AU - R. L. AU - Diggs AU - D. E. AU - Stone AU - M. O. AU - Yaney AU - P. P. AU - Heckman AU - E. AU - Zhang AU - C. AU - Steier AU - W. H. T1 - Investigation of Polymers and Marine-Derived DNA in Optoelectronics. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2004/06/21/ VL - 108 IS - 25 M3 - Article SP - 8584 EP - 8591 SN - 15206106 AB - Our research in nonlinear optic (NLO) polymer-based electro-optic (EO) modulators has centered on optimizing device performance through the using of polymer cladding layers with higher relative conductivities than the NLO core material. We have demonstrated as much as a 10 times increase in the effective EO coefficient of electrode poled, guest/host NLO polymers, compared to using passive polymer claddings. We have achieved the lowest poling voltage to date for maximum EO coefficient, 300 V, for a two-layer waveguide structure consisting of a 2 μm thick NLO polymer layer and 2 μm thick conductive cladding layer. Optimized polymer cladding materials posessing the desired optical and electromagnetic properties we find need to be balanced with materials processability. In addition to the conventional polymer materials under investigation, a novel material, deoxyribonucleic acid (DNA), derived from salmon sperm, has shown promise in providing both the desired optical and electromagnetic properties, as well as the desired resistance to various solvents used for NLO polymer device fabrication. Our investigation also includes intercalation of fluorescent dyes, photochromic dyes, nonlinear optic chromophores, two-photon dyes, and rare earth compounds into a DNA-based host material and comparing results with poly(methyl methacrylate) (PMMA)-based host materials. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTOELECTRONICS KW - POLYMERS KW - NUCLEIC acids KW - METHYL methacrylate N1 - Accession Number: 20632890; Grote J. G. 1 Hagen J. A. 1 Zetts J. S. 1 Nelson R. L. 1 Diggs D. E. 1 Stone M. O. 1 Yaney P. P. 1 Heckman E. 1 Zhang C. 1 Steier W. H. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45324, Department of Chemical and Materials Engineering, University of Cincinnati, 2624 Clifton Avenue, Cincinnati, Ohio 45221, Electro-Optics Department, University of Dayton, 300 College Park, Dayton, Ohio 45469, Locker Hydrocarbon Research Institute, Department of Chemistry, University of Southern California, Los Angeles, California 90089, Center for Photonic Technology, Department of Electrical Engineering, University of Southern California, Los Angeles, California 900; Source Info: 6/21/2004, Vol. 108 Issue 25, p8584; Subject Term: OPTOELECTRONICS; Subject Term: POLYMERS; Subject Term: NUCLEIC acids; Subject Term: METHYL methacrylate; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20632890&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Corporan, Edwin AU - DeWitt, Matthew AU - Wagner, Matthew T1 - Evaluation of soot particulate mitigation additives in a T63 engine JO - Fuel Processing Technology JF - Fuel Processing Technology Y1 - 2004/06/15/ VL - 85 IS - 6/7 M3 - Article SP - 727 SN - 03783820 AB - The performance of fuel additive candidates to mitigate soot particulate emissions in turbine engines was assessed in a T63 helicopter engine. Seventeen additives, including commercial compounds to reduce emissions in internal combustion engines, diesel cetane improvers, and experimental/proprietary additives, were evaluated. The additives were individually injected into the JP-8 fuel feed to the engine, and evaluated at a minimum of three concentration levels. The engine was operated at two conditions, idle and cruise, to investigate additive effects at different power settings or equivalence ratios. Particulate samples were collected from the engine exhaust using an oil-cooled probe, and analyzed using a suite of particulates instrumentation, which included a condensation nuclei counter (CNC), scanning mobility particle sizer (SMPS), laser particle counter (LPC) and a tapered element oscillating microbalance (TEOM). Results indicate that the diesel cetane improvers and commercial smoke abatement additives tested had minimal impact on particulate emissions in the T63 turboshaft engine. One proprietary additive was shown to reduce particle number density (PND) by up to 67% at the relatively high concentration of 3000 mg/l. These benefits were observed only at cruise condition, which may provide some insight into the mechanisms by which the additive suppresses the formation or enhances the oxidation of soot particles. Test results with blends of JP-8 and Norpar-13 (normal paraffins) show significant reductions in particulate emissions for both idle and cruise conditions demonstrating the potential environmental benefits of using blends of clean (low aromatic and low sulfur) fuels with JP-8. Comparisons of mass determination with different instruments and preliminary results of chemical characterization of particulate emissions with and without additives are also presented. [Copyright &y& Elsevier] AB - Copyright of Fuel Processing Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOOT KW - DUST KW - SMOKE prevention KW - ELECTRIC generators KW - Additives KW - Engine KW - Particulate N1 - Accession Number: 12837648; Corporan, Edwin 1; Email Address: edwin.corporan@wpafb.af.mil DeWitt, Matthew 2 Wagner, Matthew 3; Affiliation: 1: Air Force Research Laboratory, AFRL/PRTG 1790 Loop Rd N, WPAFB OH 45433-7103, USA 2: University of Dayton Research Institute, 1790 Loop Rd N, WPAFB OH 45433-7103, USA 3: Air Force Research Laboratory, AFRL/PRTM 1790 Loop Rd N, WPAFB OH 45433-7103, USA; Source Info: Jun2004, Vol. 85 Issue 6/7, p727; Subject Term: SOOT; Subject Term: DUST; Subject Term: SMOKE prevention; Subject Term: ELECTRIC generators; Author-Supplied Keyword: Additives; Author-Supplied Keyword: Engine; Author-Supplied Keyword: Particulate; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.fuproc.2003.11.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12837648&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Elhamri, S. AU - Berney, R. AU - Mitchel, W. C. AU - Mitchell, W. D. AU - Roberts, J. C. AU - Rajagopal, P. AU - Gehrke, T. AU - Piner, E. L. AU - Linthicum, K. J. T1 - An electrical characterization of a two-dimensional electron gas in GaN/AlGaN on silicon substrates. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/06/15/ VL - 95 IS - 12 M3 - Article SP - 7982 EP - 7989 PB - American Institute of Physics SN - 00218979 AB - We present results of transport measurements performed on AlGaN/GaN heterostructures grown on silicon substrates. Variable temperature Hall effect measurements revealed that the temperature dependence of the carrier density and mobility were characteristic of a two-dimensional electron gas (2DEG). Carrier densities greater than 1×1013 cm-2 and Hall mobilities in excess of 1500 cm2/V s were measured at room temperature. Variable field Hall measurements at low temperatures, and in magnetic fields up to 6 T, indicated that conduction is dominated by a single carrier type in these samples. Shubnikov–de Haas (SdH) measurements were also performed, but no oscillations were observed in fields up to 8 T and at temperatures as low as 1.2 K. Illuminating some of the samples with a blue (λ=470 nm) light emitting diode (LED) induced a persistent increase in the carrier density. SdH measurements were repeated and again no oscillations were present following illumination. However, exposing the samples to radiation from an UV (λ=395 nm) LED induced well-defined SdH oscillations in fields as low as 4 T. The observation of SdH oscillations confirmed the presence of a 2DEG in these structures. It is hypothesized that small angle scattering suppressed the oscillations before exposure to UV light. This conclusion is supported by the observed increase in the quantum scattering time, τq, with the carrier density and the calculated quantum to transport scattering times ratio, τq/τc. For instance, in one of the samples the τq increased by 32% while the τc changed by only 3% as the carrier density increased; an indication of an increase in the screening of small angle scattering. The absence of SdH oscillations in fields up to 8 T and at temperatures as low as 1.2 K is not unique to AlGaN/GaN on silicon. This behavior was observed in AlGaN/GaN on sapphire and on silicon carbide. SdH oscillations were observed in one AlGaN/GaN on silicon carbide sample following exposure to radiation from an UV LED. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON gas KW - SILICON KW - ELECTRIC currents KW - ELECTRICITY KW - LIGHT sources KW - TEMPERATURE N1 - Accession Number: 13307791; Elhamri, S. 1; Email Address: said.elhamri@notes.udayton.edu Berney, R. 1 Mitchel, W. C. 2 Mitchell, W. D. 2 Roberts, J. C. 3 Rajagopal, P. 3 Gehrke, T. 3 Piner, E. L. 3 Linthicum, K. J. 3; Affiliation: 1: Department of Physics, University of Dayton, Dayton, Ohio 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson, ohio 3: Nitronex Corporation, 628 Hutton Street, Suite 106, Raleigh, North Carolina; Source Info: 6/15/2004, Vol. 95 Issue 12, p7982; Subject Term: ELECTRON gas; Subject Term: SILICON; Subject Term: ELECTRIC currents; Subject Term: ELECTRICITY; Subject Term: LIGHT sources; Subject Term: TEMPERATURE; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 8p; Illustrations: 1 Diagram, 1 Chart, 6 Graphs; Document Type: Article L3 - 10.1063/1.1736327 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13307791&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, G. A. AU - Dang, T. N. AU - Nelson, T. R. AU - Brown, J. L. AU - Tsvetkov, D. AU - Usikov, A. AU - Dmitriev, V. T1 - 341 nm emission from hydride vapor-phase epitaxy ultraviolet light-emitting diodes. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/06/15/ VL - 95 IS - 12 M3 - Article SP - 8247 EP - 8251 PB - American Institute of Physics SN - 00218979 AB - Hydride vapor-phase epitaxy (HVPE) was used to grow aluminum gallium nitride-based p–n diode structures on sapphire (0001) substrates. In the diode structure, an n-type AlGaN photon-emitting layer was sandwiched between n-type and p-type AlGaN cladding layers that contained higher AlN concentrations. These diode structures were processed and subsequently packaged into transistor outline cans. The light-emitting diodes (LEDs) were characterized using a state-of-the-art spectroradiometer. LED spectral emission occurred at a peak wavelength of 341 nm with a typical full width at half-maximum of approximately 14 nm. Pulsed injection currents of 110 mA resulted in greater than 2 mW of optical output power at a wavelength of 341 nm. This HVPE-grown LED’s pulsed optical power output level is comparable to reported results on similar sized metalorganic chemical vapor deposition grown ultraviolet LEDs with emission wavelengths near 340 nm. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPITAXY KW - HYDRIDES KW - ALUMINUM KW - NITRIDES KW - PHOTON emission KW - DIODES N1 - Accession Number: 13307747; Smith, G. A. 1 Dang, T. N. 1 Nelson, T. R. 1; Email Address: Thomas.Nelson@wpafb.af.mil Brown, J. L. 2 Tsvetkov, D. 3 Usikov, A. 3 Dmitriev, V. 3; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory, Wright-Patterson, Ohio 2: Materials Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 3: Technologies and Devices International, Inc., Plum Orchard Drive, Silver Spring, Maryland; Source Info: 6/15/2004, Vol. 95 Issue 12, p8247; Subject Term: EPITAXY; Subject Term: HYDRIDES; Subject Term: ALUMINUM; Subject Term: NITRIDES; Subject Term: PHOTON emission; Subject Term: DIODES; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 5p; Illustrations: 1 Color Photograph, 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.1738533 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13307747&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hutson, J. M. AU - Devine, R. A. B. AU - Schrimpf, R. D. T1 - Electrical and radiation assisted passivation of Ta2O5/Si interface. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/06/15/ VL - 95 IS - 12 M3 - Article SP - 8463 EP - 8465 PB - American Institute of Physics SN - 00218979 AB - An unusual interface state passivation effect has been observed in Al/Ta2O5/Si capacitors. The effect is found for negative bias stress fields ∼-0.4 MV cm-1, it is also observed for positive bias fields if the structures are simultaneously x irradiated. The passivation relaxes if the structure is heated to moderate temperatures (<=70 °C) for relatively short times (∼tens of minutes). Bias stress measurements also evidence the presence of positive and negative trapped charge in the Ta2O5 films in the “as-deposited” state. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CAPACITORS KW - INTEGRATED circuits -- Passivation KW - IRRADIATION KW - TEMPERATURE KW - THIN films N1 - Accession Number: 13307716; Hutson, J. M. 1 Devine, R. A. B. 1; Email Address: devine@chtm.unm.edu Schrimpf, R. D. 2; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Albuquerque, New Mexico 2: Department of Electrical Engineering and Computer Science, Vanderbilt University, Stevenson Center, Nashville, Tennessee; Source Info: 6/15/2004, Vol. 95 Issue 12, p8463; Subject Term: CAPACITORS; Subject Term: INTEGRATED circuits -- Passivation; Subject Term: IRRADIATION; Subject Term: TEMPERATURE; Subject Term: THIN films; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.1745116 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13307716&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, L.B. AU - Price, M.B. AU - Young, J.L. AU - Kwon, C. AU - Haugan, Timothy J. AU - Barnes, Paul N. T1 - Observation of nonuniform current transport in epitaxial YBa2Cu3O7-x film near the superconducting transition temperature JO - Physica C JF - Physica C Y1 - 2004/06/15/ VL - 405 IS - 3/4 M3 - Article SP - 240 EP - 244 SN - 09214534 AB - We have studied the local transport properties in an epitaxial YBa2Cu3O7-x (YBCO) film on LaAlO3 (LAO) using variable temperature scanning laser microscope (VTSLM) near the superconducting transition. A map of the superconducting transition temperature (Tc*) is generated from a series of VTSLM images. The map of Tc* indicates there are inhomogeneities in the film large enough to create nonuniform current flow near the superconducting transition. The evaluated Tc* varies between 90.3 and 91.0 K in the film. Even though such change in Tc* is not large enough to be detected by other localized compositional and structural characterization techniques, this along with an area of lower Tc* and/or higher resistance affects current flow near the superconducting transition temperature as shown in VTSLM images. This inhomogeneity may be caused by slight variations of the stoichiometry and/or oxidation of the YBCO film. [Copyright &y& Elsevier] AB - Copyright of Physica C is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - OPTICAL instruments KW - STOICHIOMETRY KW - TEMPERATURE KW - Tc KW - Inhomogeneity KW - Variable temperature scanning laser microscopy KW - YBCO film N1 - Accession Number: 13236956; Wang, L.B. 1 Price, M.B. 1 Young, J.L. 1 Kwon, C. 1; Email Address: ckwon@csulb.edu Haugan, Timothy J. 2 Barnes, Paul N. 2; Affiliation: 1: Department of Physics and Astronomy, California State University Long Beach, 1250 Bellflower Boulevard, Long Beach, CA 90840, USA 2: Air Force Research Laboratory, 2645 Fifth Street, WPAFB, OH 45433-7919, USA; Source Info: Jun2004, Vol. 405 Issue 3/4, p240; Subject Term: LASERS; Subject Term: OPTICAL instruments; Subject Term: STOICHIOMETRY; Subject Term: TEMPERATURE; Author-Supplied Keyword: Tc; Author-Supplied Keyword: Inhomogeneity; Author-Supplied Keyword: Variable temperature scanning laser microscopy; Author-Supplied Keyword: YBCO film; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 446130 Optical Goods Stores; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.physc.2004.02.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13236956&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boghosian, Bruce M. AU - Love, Peter J. AU - Yepez, Jeffrey AU - Coveney, Peter V. T1 - Galilean-invariant multi-speed entropic lattice Boltzmann models JO - Physica D JF - Physica D Y1 - 2004/06/15/ VL - 193 IS - 1-4 M3 - Article SP - 169 EP - 181 SN - 01672789 AB - In recent work [Phys. Rev. E 68 (2003) 025103], it was shown that the requirement of Galilean invariance determined the form of the H function used in entropic lattice Boltzmann models for the incompressible Navier–Stokes equations in D dimensions. The form obtained was that of the Burg entropy for D=2, and the Tsallis entropy with q=1-2/D for D≠2. The conclusions obtained in that work were restricted to particles of a single-mass and speed on a Bravais lattice. In this work, we generalize the construction of such Galilean-invariant entropic lattice Boltzmann models by allowing for certain models with multiple masses and speeds. We show that the required H function for these models must be determined by solving a certain functional differential equation. Remarkably, the solutions to this equation also have the form of the Tsallis entropy, where q is determined by the solution to a certain transcendental equation, involving the dimension and symmetry properties of the lattice, as well as the masses and speeds of the particles. [Copyright &y& Elsevier] AB - Copyright of Physica D is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAXWELL-Boltzmann distribution law KW - ENTROPY KW - THERMODYNAMICS KW - FUNCTIONAL differential equations KW - Entropic lattice Boltzmann models KW - Galilean invariance KW - Lattice Boltzmann models KW - Navier–Stokes equations N1 - Accession Number: 13291370; Boghosian, Bruce M. 1; Email Address: bruce.boghosian@tufts.edu Love, Peter J. 1 Yepez, Jeffrey 2 Coveney, Peter V. 3; Affiliation: 1: Department of Mathematics, Tufts University, Bromfield-Pearson Hall, Medford, MA 02155, USA 2: Air Force Research Laboratory, Hanscom A.F.B., Bedford, MA 01731-3010, USA 3: Department of Chemistry, Centre for Computational Science, University College London, 20 Gordon St., London WC1H 0AJ, UK; Source Info: Jun2004, Vol. 193 Issue 1-4, p169; Subject Term: MAXWELL-Boltzmann distribution law; Subject Term: ENTROPY; Subject Term: THERMODYNAMICS; Subject Term: FUNCTIONAL differential equations; Author-Supplied Keyword: Entropic lattice Boltzmann models; Author-Supplied Keyword: Galilean invariance; Author-Supplied Keyword: Lattice Boltzmann models; Author-Supplied Keyword: Navier–Stokes equations; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.physd.2004.01.018 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13291370&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ganquly, B. N. AU - Parish, J. W. T1 - Absolute H atom density measurement in pure methane pulsed discharge. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/06/14/ VL - 84 IS - 24 M3 - Article SP - 4953 EP - 4955 PB - American Institute of Physics SN - 00036951 AB - Absolute atomic hydrogen and methyl radical production resulting from direct electron impact dissociative excitation of CH4 has been measured in pulsed discharge by two-photon allowed laser induced fluorescence. For 20 Torr pure methane discharge with 480 ns pulse duration, 4–6 kV voltage applied, and 6–11.5 mJ input electrical energy yield of 10–22×1015 cm-3 hydrogen atoms, i.e., up to 4.5% dissociation of CH4 is achieved by direct electron impact with 50% energy conversion efficiency. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATOMIC hydrogen KW - METHANE KW - FLUORESCENCE KW - MANURE gases KW - HYDROGEN KW - RADIOACTIVITY N1 - Accession Number: 13269844; Ganquly, B. N. 1; Email Address: biswa.ganguly@wpatb.af.ml Parish, J. W. 1; Affiliation: 1: Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433-7919.; Source Info: 6/14/2004, Vol. 84 Issue 24, p4953; Subject Term: ATOMIC hydrogen; Subject Term: METHANE; Subject Term: FLUORESCENCE; Subject Term: MANURE gases; Subject Term: HYDROGEN; Subject Term: RADIOACTIVITY; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; Number of Pages: 3p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.1760888 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13269844&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buryachenko, V. A. AU - Roy, A. AU - Ghosh, S. AU - Castro, J.C. AU - Lee, J.K. T1 - Modeling for thermoelastic properties of advanced nanocomposites of random reinforcement. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/10/ VL - 712 IS - 1 M3 - Article SP - 117 EP - 122 PB - American Institute of Physics SN - 0094243X AB - Experimental research and molecular dynamic simulation proved that nanofibers can be effectively considered in the framework of continuum mechanics as the homogeneous prolate spheroidal homogeneous inclusions with a large aspect ratio. Nanocomposite is modeled as a linearly thermoelastic composite medium, which consists of a homogeneous matrix containing a statistically homogeneous random field of nanofibers with prescribed random orientation. Estimation of effective thermoelastic moduli of nanocomposites was performed by the version of effective field method (MEF, see for references and details Buryachenko, Applied Mechanics Reviews, 2001, v.54, 1–47) developed in the framework of quasi crystalline approximation when the spatial correlations of inclusion location take particular ellipsoidal forms. These “correlation hole” including the representative fibers are prohibited for the location of centers of surrounding fibers (since they cannot overlap) and compatible with mutual orientations of fibers. The independent justified selection of shapes of inclusions and correlation holes provide the formulae of effective moduli which are completely explicit and easily to use. However, the main advantage of the proposed approach is that it eliminates some of drawbacks of Mori-Tanaka scheme, which can generate tensors of effective moduli which fails to satisfy a necessary symmetry requirement. The parametric numerical analyses revealed the most sensitive parameters influencing of the effective moduli which are defined by the axial elastic moduli of nanofibers rather then their transversal moduli as well as by the justified chose of correlation holes, concentration and prescribed random orientation of nanofibers. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUMERICAL analysis KW - STOCHASTIC processes KW - FIBERS KW - SIMULATION methods & models KW - MATRICES N1 - Accession Number: 13720606; Buryachenko, V. A. 1 Roy, A. 2 Ghosh, S. Castro, J.C. Lee, J.K.; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469-0168, USA 2: Air Force Research Laboratory, AFRL/MLBC, OH 45433-7750, USA; Source Info: 2004, Vol. 712 Issue 1, p117; Subject Term: NUMERICAL analysis; Subject Term: STOCHASTIC processes; Subject Term: FIBERS; Subject Term: SIMULATION methods & models; Subject Term: MATRICES; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.1766510 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13720606&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yanling Yin AU - Wei-Tsu Wu AU - Srivatsa, Shesh AU - Semiatin, S. Lee AU - Gayda, John AU - Ghosh, S. AU - Castro, J.C. AU - Lee, J.K. T1 - Modeling Machining Distortion of Aircraft-Engine Disk Forgings. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/10/ VL - 712 IS - 1 M3 - Article SP - 400 EP - 405 PB - American Institute of Physics SN - 0094243X AB - Rotating components of aircraft engines are generally manufactured by forging followed by heat treatment. Due to the residual stresses induced during heat treatment, components often distort when material is removed during machining to the final shape. Using trial-and-error approaches, it can be very difficult to develop a sequence of machining operations which will ensure that the final component is produced within the very tight dimensional tolerances required for satisfactory performance in service. The objective of the current work, therefore, was to develop and validate a simulation procedure that can predict distortion during the material removal process. To validate the model, four prototype disks were forged and then heat treated under different conditions. Multiple machining cuts were carried out on the top side of each disk. The distortion at the bottom surface was then measured. The Finite-Element Method (FEM) embodied in the commercial software, DEFORM™-HT, was used to model the four heat-treatment processes. Excellent agreement between the measured distortions and the finite-element predictions was found. The FEM heat-treatment model was shown to be a very useful tool to understand and predict distortion and can thus be used for the design and optimization of heat-treatment and machining processes. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FINITE element method KW - MANUFACTURING processes KW - MACHINING KW - METALS -- Heat treatment KW - METALS -- Mechanical properties KW - FORGING KW - MATERIALS science N1 - Accession Number: 13720559; Yanling Yin 1 Wei-Tsu Wu 1 Srivatsa, Shesh 2 Semiatin, S. Lee 3 Gayda, John 4 Ghosh, S. Castro, J.C. Lee, J.K.; Affiliation: 1: Scientific Forming Technologies Corporation, Columbus, OH, USA 2: GE Aircraft Engines, Cincinnati, OH, USA 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA 4: NASA Glenn Research Center, Cleveland, OH, USA; Source Info: 2004, Vol. 712 Issue 1, p400; Subject Term: FINITE element method; Subject Term: MANUFACTURING processes; Subject Term: MACHINING; Subject Term: METALS -- Heat treatment; Subject Term: METALS -- Mechanical properties; Subject Term: FORGING; Subject Term: MATERIALS science; NAICS/Industry Codes: 332112 Nonferrous Forging; NAICS/Industry Codes: 332113 Forging; NAICS/Industry Codes: 332111 Iron and Steel Forging; NAICS/Industry Codes: 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables; NAICS/Industry Codes: 333994 Industrial Process Furnace and Oven Manufacturing; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.1766557 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13720559&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cazacu, Oana AU - Fré, déric AU - Nixon, Michael E. AU - Ghosh, S. AU - Castro, J. C. AU - Lee, J. K. T1 - New Anisotropic Constitutive Models For HCP Sheet Forming Simulations. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/10/ VL - 712 IS - 1 M3 - Article SP - 1046 EP - 1051 PB - American Institute of Physics SN - 0094243X AB - In this paper, we present a new macroscopic isotropic yield criterion expressed in terms of the principal values of the stress deviator that captures the asymmetry in yielding between tension and compression. Comparisons with the results of polycrystalline simulations performed by Hosford and Allen show that this isotropic criterion describes very well the asymmetry in yielding due to activation of twinning. Furthermore, extensions of this criterion to orthotropy are presented. To introduce anisotropy we use two approaches: (a) the generalized invariants approach of Cazacu and Barlat, and (b) the linear transformation approach (Barlat et al.). The ability of the proposed formulations to describe both the asymmetry and anisotropy in yielding of hcp (Mg-Li) sheet is demonstrated. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - ASYMMETRY (Chemistry) KW - STRESS (Physiology) KW - POLYCRYSTALS KW - TWINNING (Crystallography) KW - ANISOTROPY N1 - Accession Number: 13720452; Cazacu, Oana 1 Fré, déric 2 Nixon, Michael E. 1,3 Ghosh, S. Castro, J. C. Lee, J. K.; Affiliation: 1: Department of Mechanical and Aerospace Engineering, university of Florida's Graduate Engineering research Ccenter, Shalimar, FL 32579, USA 2: Materials Science Division, ALCOA INC, 100 Technical Dr., Alcoa Center, PA 15069-0001 USA 3: Air Force Research Laboratory, Eglin AFB, FL 32542, USA; Source Info: 2004, Vol. 712 Issue 1, p1046; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ASYMMETRY (Chemistry); Subject Term: STRESS (Physiology); Subject Term: POLYCRYSTALS; Subject Term: TWINNING (Crystallography); Subject Term: ANISOTROPY; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.1766666 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13720452&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Semiatin, S. L. AU - Bieler, T. R. AU - Miller, J. D. AU - Glavicic, M. G. AU - Ghosh, S. AU - Castro, J.C. AU - Lee, J.K. T1 - Deformation Mechanisms during Hot Working of Titanium. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/10/ VL - 712 IS - 1 M3 - Article SP - 1558 EP - 1558 PB - American Institute of Physics SN - 0094243X AB - Computer models of metal flow and texture evolution during hot working require accurate descriptions of deformation mechanisms and constitutive behavior. Such descriptions for titanium alloys can be very complex because of the variety of slip systems in the hexagonal (alpha) phase, let alone the complications associated with the deformation of two-phase (alpha/beta) microstructures in commercial alloys. Methods to elucidate the deformation behavior of unalloyed alpha titanium and two-phase Ti-6Al-4V will be described. First, the analysis of the hot deformation of heavily textured bar and plate materials will be described. In these instances, the anisotropy in flow stress and in sample deformation pattern have been used in conjunction with a crystal plasticity code to deduce the relative values of the critical resolved shear stresses for basal , prism , and pyramidal slip. Analysis of the flow curves has also provided insight into the micromechanism of flow softening in two-phase alloys with colony-alpha microstructures. To complement this work, an x-ray line broadening technique was developed to deduce the relative slip activity at large strains in unalloyed titanium and Ti-6Al-4V. These measurements also provided estimates of the dislocation density as a function of temperature and the competition between slip and twinning at cold-working temperatures. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER simulation KW - SIMULATION methods & models KW - TITANIUM alloys KW - DEFORMATIONS (Mechanics) KW - STRAINS & stresses (Mechanics) KW - RHEOLOGY KW - MATERIALS science KW - CHEMICAL engineering N1 - Accession Number: 13720368; Semiatin, S. L. 1 Bieler, T. R. 2 Miller, J. D. 3 Glavicic, M. G. 4 Ghosh, S. Castro, J.C. Lee, J.K.; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright-Patterson Air Force Base, OH 45433 2: Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI 48824 3: University of Dayton, Department of Chemical Engineering, 300 College Park, Dayton, OH 45409 4: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432; Source Info: 2004, Vol. 712 Issue 1, p1558; Subject Term: COMPUTER simulation; Subject Term: SIMULATION methods & models; Subject Term: TITANIUM alloys; Subject Term: DEFORMATIONS (Mechanics); Subject Term: STRAINS & stresses (Mechanics); Subject Term: RHEOLOGY; Subject Term: MATERIALS science; Subject Term: CHEMICAL engineering; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.1766750 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13720368&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Turner, T. J. AU - Miller, M. P. AU - Ghosh, S. AU - Castro, J.C. AU - Lee, J.K. T1 - Instantiation of Polycrystal Plasticity Models to Predict Heterogeneous Straining in Aluminum Alloys. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/10/ VL - 712 IS - 1 M3 - Article SP - 1687 EP - 1692 PB - American Institute of Physics SN - 0094243X AB - A methodology for incorporating a description of material structure into a finite element formulation is presented. This modeling framework was used to study the development of deformation induced surface roughening in thin sheets machined from AA 7050 thick plate. Predicting this roughening phenomenon necessitates the quantification and representation of processes that exist over several size scales. This work describes an experiment/simulation — based study focused on the deformation behavior of thick AA 7050 aluminum plate. EBSD (Electron Back Scatter Diffraction) experiments were used for the material structure characterization, which included crystallographic texture, distributions in grain sizes, and a distribution in internal grain misorientation. These distributions in structure were used to create digital microstructures which represented virtual specimens composed of finite element-discretized crystals, whose size, orientation and intra-grain misorientations were chosen to match experimentally measured crystal distribution statistics. A continuum slip-polycrystal plasticity model was employed with hardening parameters determined by matching the macroscopic stress-strain response, and the digital microstructures were employed to study the differences in roughening seen in specimens deformed along the Rolling Direction (RD) and Transverse Direction (TD) of the plate material. In general, the trends in the surface roughening were well predicted using the digital microstructures. The TD specimen roughened more than the RD specimen, and the TD roughness appeared to have more directionality. However, the magnitude of the roughening features was less accurately captured, as the model over-predicted the height of the surface roughening. The success of these simulations build additional insight into how to incorporate material structure into deformation simulations, and build representative virtual specimens that can study the complicated processes that underlie the deformation mechanics in polycrystalline materials. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASTICITY KW - STRAINS & stresses (Mechanics) KW - ALUMINUM KW - ALLOYS KW - METALLIC composites KW - MATERIALS -- Research KW - MATERIALS science N1 - Accession Number: 13720346; Turner, T. J. 1 Miller, M. P. 2 Ghosh, S. Castro, J.C. Lee, J.K.; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMP, Wright-Patterson Air Force Base, OH 45433-7817 2: Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY 14853; Source Info: 2004, Vol. 712 Issue 1, p1687; Subject Term: PLASTICITY; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ALUMINUM; Subject Term: ALLOYS; Subject Term: METALLIC composites; Subject Term: MATERIALS -- Research; Subject Term: MATERIALS science; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.1766772 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13720346&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dimiduk, D. M. AU - Parathasarathy, T. A. AU - Rao, S. I. AU - Choi, Y. -S. AU - Uchic, M. D. AU - Ghosh, S. AU - Castro, J.C. AU - Lee, J.K. T1 - Predicting the Microstructure-Dependent Mechanical Performance of Materials for Early-Stage Design. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/10/ VL - 712 IS - 1 M3 - Article SP - 1705 EP - 1710 PB - American Institute of Physics SN - 0094243X AB - A description is offered of a simulation and testing methodology for structural materials that incorporates the influence of the local, microscopic and submicroscopic heterogeneous nature of material properties directly into design procedures. The new methodology builds upon a multitude of rapid microstructural and property assessments of selected local regions of a material (i.e. single-crystal regions, defected regions, grain aggregates, etc.), perhaps from a fully-processed component, or from materials specifically prepared to represent selected aspects of the full-scale process. The results from these assessments are used to define parameters within a hierarchy of mathematical and numerical representations of the material, and together in turn these may be used in design performance simulation codes to predict the intrinsic response of larger-scale structures. Further, the methodology may be used to anticipate the effects of defects on the performance of the full-scale structure. Most steps of this alternative design and test methodology are amenable to automation, and the methodology as a whole will reduce the number of iterative large-scale cycles required to qualify a material’s suitability for structural service; thus, the new method is a framework for accelerating the development of structural materials. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Research KW - MATERIALS science KW - MICROSTRUCTURE KW - STRENGTH of materials KW - STRUCTURAL analysis (Engineering) N1 - Accession Number: 13720342; Dimiduk, D. M. 1 Parathasarathy, T. A. 2 Rao, S. I. 2 Choi, Y. -S. 2 Uchic, M. D. 1 Ghosh, S. Castro, J.C. Lee, J.K.; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, AFRL/MLLM, Wright-Patterson AFB, OH 45434-7817, USA 2: UES, Inc. 4401 Dayton-Xenia Road, Dayton, OH 45432-1894, USA; Source Info: 2004, Vol. 712 Issue 1, p1705; Subject Term: MATERIALS -- Research; Subject Term: MATERIALS science; Subject Term: MICROSTRUCTURE; Subject Term: STRENGTH of materials; Subject Term: STRUCTURAL analysis (Engineering); Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.1766776 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13720342&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Groeber, M. AU - Haley, B. AU - Uchic, M. AU - Ghosh, S. AU - Castro, J.C. AU - Lee, J.K. T1 - Microstructural Characterization Using 3-D Orientation Data Collected by an Automated FIB-EBSD System. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/10/ VL - 712 IS - 1 M3 - Article SP - 1712 EP - 1718 PB - American Institute of Physics SN - 0094243X AB - In this work, a new technique utilizing an automated approach of combining a Focused Ion Beam (FIB) and Electron Back-Scatter Diffraction (EBSD) system was implemented for the collection of 3-D orientation data that can be used to more accurately model grain and sub-grain particle structures. The process is currently capable of sectioning a sample with inter-slice thicknesses as low as 100 nanometers and capturing an orientation map of each slice. Automation of this technique allowed for rapid data collection with the ability to update settings in real time. The orientation data obtained by the EBSD scans consists of each grid point’s position, three Euler angles and phase. Reconstruction of the 3-D orientation data involves combining or “stacking” the 2-D slices obtained by the FIB-EBSD process. The orientation data of each slice is combined into one data file containing orientation information for each point on the 3-D grid, which can have spacing as little as 100 nanometers in all three directions. A program developed in this work, Micro-Mesher, uses the reconstructed orientation information to define microstructural features such as grains and second phase particles. Micro-Mesher constructs grain boundaries with line and plane segments using an error per unit length approach to approximate the complex grain boundaries. Important microstructural statistics that are used to define and characterize the 3-D microstructure are also calculated by Micro-Mesher. Such important parameters include: grain size, no. of neighboring grains, orientations and misorientations, second phase particles size and inter particle spacing as well as others. The 3-D statistical information gained from this process improves the ability to accurately characterize the microstructure. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Research KW - MATERIALS science KW - MICROSTRUCTURE KW - ION bombardment KW - ELECTRON scattering N1 - Accession Number: 13720340; Groeber, M. 1 Haley, B. 2 Uchic, M. 3 Ghosh, S. 4 Castro, J.C. Lee, J.K.; Affiliation: 1: Department of Materials Science and Engineering, Ohio State University, Columbus, OH 43210, USA 2: Department of Computer Science and Engineering, Ohio State University, Columbus, OH 43210, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMD, Wright-Patterson AFB, OH 45433-7817, USA 4: Department of Mechanical Engineering, Ohio State University, Columbus, OH 43210, USA; Source Info: 2004, Vol. 712 Issue 1, p1712; Subject Term: MATERIALS -- Research; Subject Term: MATERIALS science; Subject Term: MICROSTRUCTURE; Subject Term: ION bombardment; Subject Term: ELECTRON scattering; Number of Pages: 7p; Document Type: Article L3 - 10.1063/1.1766778 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13720340&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Choi, Y. S. AU - Dimiduk, D. M. AU - Uchic, M. D. AU - Parthasarathy, T. A. AU - Ghosh, S. AU - Castro, J.C. AU - Lee, J.K. T1 - Modeling the Anomalous Flow Behavior of Ni3Al Intermetallic Single Crystals. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/10/ VL - 712 IS - 1 M3 - Article SP - 1783 EP - 1783 PB - American Institute of Physics SN - 0094243X AB - In this study we present a new constitutive model for Ni3Al and Ni3(Al, X) alloys that was developed to represent many of the unusual plastic flow behavior found in L12 intermetallics while maintaining consistency with the experimentally-observed evolution of dislocation substructure. In particular, we sought to develop a model that would not only predict the anomalous increase of the yield strength with increasing temperature, but would also capture other important flow characteristics such as extremely high work-hardening rates that change anomalously with temperature, and a flow stress that is partially to fully reversible with temperature. For this model, we have treated work-hardening as arising from two different sources. Thermally-reversible work hardening is accounted for using the description of screw dislocation motion proposed by Caillard, which involves exhaustion of mobile dislocations by cross-slip locking of the dislocation core and athermal unlocking. Thermally-irreversible work hardening is accounted for using an approach consistent with the theoretical framework proposed by Ezz and Hirsch, which involves both the multiplication of Frank-Reed sources and the interaction of edge-dislocation segments with cross-slip locking events and the dislocation forest. Both work-hardening contributions were incorporated into the rate formulation for thermally-activated plastic flow proposed by Kocks, Argon and Ashby. We will show simulation results for the flow response of Ni3(Al, X) crystals over a wide range of temperatures in the anomalous flow regime, and we will compare these findings with experimental data. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS science KW - MATERIALS -- Research KW - MICROSTRUCTURE KW - STRENGTH of materials KW - INTERMETALLIC compounds N1 - Accession Number: 13720328; Choi, Y. S. 1 Dimiduk, D. M. 2 Uchic, M. D. 2 Parthasarathy, T. A. 1 Ghosh, S. Castro, J.C. Lee, J.K.; Affiliation: 1: UES, Inc., Dayton, OH 45432 2: Air Force Research Laboratory, Materials & Manufacturing Directorate, WPAFB, OH 45433; Source Info: 2004, Vol. 712 Issue 1, p1783; Subject Term: MATERIALS science; Subject Term: MATERIALS -- Research; Subject Term: MICROSTRUCTURE; Subject Term: STRENGTH of materials; Subject Term: INTERMETALLIC compounds; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.1766790 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13720328&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Turner, T. J. AU - Semiatin, S. L. AU - Ghosh, S. AU - Castro, J.C. AU - Lee, J.K. T1 - A Crystal-Plasticity Model for the Flow Behavior of Two-Phase Alloy Systems. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/10/ VL - 712 IS - 1 M3 - Article SP - 1792 EP - 1797 PB - American Institute of Physics SN - 0094243X AB - A crystal-plasticity finite-element method was applied to predict the flow behavior of two-phase face-centered-cubic (fcc) and hexagonal-close-packed (hcp) alloy systems as a function of both the relative flow stresses of the phases and their volume fractions. The finite-element model used an equiaxed microstructure typical of a wrought material in which individual grains were resolved with either cube elements or a dodecahedral geometry consisting of 48 tetrahedral elements. The relative strength differences between grains were quantified through differences in crystallographic orientation (geometric strength) or resolved shear strength at the slip system level (material strength). With this methodology, the flow behavior and strain-rate partitioning between the phases were established as a function of both initial crystallographic orientation and initial slip system strength. When the model comprised micro-scale discretization, the predicted strain-rate partitioning between the phases was found to be in agreement with a self-consistent modeling approach that also incorporated strength differences between the two phases. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS science KW - MATERIALS -- Research KW - FINITE element method KW - MATHEMATICAL models KW - CRYSTALS KW - STRENGTH of materials N1 - Accession Number: 13720325; Turner, T. J. 1 Semiatin, S. L. 1 Ghosh, S. Castro, J.C. Lee, J.K.; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMP, Wright-Patterson Air Force Base, OH 45433-7817; Source Info: 2004, Vol. 712 Issue 1, p1792; Subject Term: MATERIALS science; Subject Term: MATERIALS -- Research; Subject Term: FINITE element method; Subject Term: MATHEMATICAL models; Subject Term: CRYSTALS; Subject Term: STRENGTH of materials; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.1766793 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13720325&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jha, S. K. AU - Larsen, J. M. AU - Rosenberger, A. H. AU - Ghosh, S. AU - Castro, J.C. AU - Lee, J.K. T1 - The Role of Fatigue Variability in Life Prediction of an α+β Titanium Alloy. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/10/ VL - 712 IS - 1 M3 - Article SP - 1955 EP - 1960 PB - American Institute of Physics SN - 0094243X AB - The fatigue life variability of the α+β titanium alloy, Ti-6Al-2Sn-4Zr-6Mo increased with decreasing stress level. The variability in life was found to be due to segregation of lives due to two failure mechanisms. A bimodal cumulative distribution model was shown to accurately describe the combined failure modes. The nominal failure processes for the two regimes were similar, with crack nucleation occurring in equiaxed αp particles, irrespective of life or stress level. However the variability in life was not controlled by the size of the crack-nucleating αp, but rather by the ability of the material to distribute deformation and avoid early crack nucleation. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - MATERIALS -- Fatigue KW - DEFORMATIONS (Mechanics) KW - NUCLEATION KW - DISTRIBUTION (Probability theory) KW - PHYSICS N1 - Accession Number: 13720679; Jha, S. K. 1 Larsen, J. M. 2 Rosenberger, A. H. 2 Ghosh, S. Castro, J.C. Lee, J.K.; Affiliation: 1: Universal Technology Corporation, Dayton, OH, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, USA; Source Info: 2004, Vol. 712 Issue 1, p1955; Subject Term: TITANIUM alloys; Subject Term: MATERIALS -- Fatigue; Subject Term: DEFORMATIONS (Mechanics); Subject Term: NUCLEATION; Subject Term: DISTRIBUTION (Probability theory); Subject Term: PHYSICS; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.1766820 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13720679&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brooks, Gregory P. AU - Powers, Joseph M. T1 - Standardized pseudospectral formulation of the inviscid supsersonic blunt body problem JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2004/06/10/ VL - 197 IS - 1 M3 - Article SP - 58 EP - 85 SN - 00219991 AB - A highly accurate pseudospectral numerical approximation to the generalized coordinate, nonconservative form of the Euler equations is implemented for supersonic flow over an axisymmetric blunt body geometry; shock fitting is employed to maintain global accuracy and minimize the corrupting influence of numerical viscosity. The variables in the Euler equations as well as the physical grid coordinates are collocated via Lagrange interpolating polynomials and the problem is then cast in the standard form of a large system of ordinary differential equations, dx/dτ=q(x), which can be solved using standard solution techniques that do not require an explicit criteria for the minimum time step. Code verification is performed by demonstrating through a series of grid refinement tests that the error in the approximation to a Taylor–Maccoll solution converges to 10-12. Grid refinement tests for flow over a blunt body show convergence of the numerical error also to 10-12. The code is validated for supersonic flow over a blunt body by comparison with the modified Newtonian approximation for the surface pressure distribution and empirical predictions for the shock shape. The ability of the method to capture unsteady flow phenomena is demonstrated on the problem of a planar acoustic wave interacting with an attached shock. [Copyright &y& Elsevier] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EQUATIONS KW - FLUID dynamics KW - AERODYNAMICS KW - BESSEL functions KW - Euler equations KW - Pseudospectral method KW - Shock fitting KW - Supersonic blunt body KW - System of ordinary differential equations N1 - Accession Number: 13105998; Brooks, Gregory P. 1; Email Address: Gregory.Brooks@wpafb.af.mil Powers, Joseph M. 2; Email Address: powers@nd.edu; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA 2: Department of Aerospace and Mechanical Engineering, University of Notre Dame, 372 Fitzpatrick Hall of Engineering, Notre Dame, IN 46556-5637, USA; Source Info: Jun2004, Vol. 197 Issue 1, p58; Subject Term: EQUATIONS; Subject Term: FLUID dynamics; Subject Term: AERODYNAMICS; Subject Term: BESSEL functions; Author-Supplied Keyword: Euler equations; Author-Supplied Keyword: Pseudospectral method; Author-Supplied Keyword: Shock fitting; Author-Supplied Keyword: Supersonic blunt body; Author-Supplied Keyword: System of ordinary differential equations; Number of Pages: 28p; Document Type: Article L3 - 10.1016/j.jcp.2003.11.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13105998&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carr Jr., W. J. AU - Oberly, C. E. T1 - Possibilities for Use of Coated Superconductors in AC Applications. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/06/09/ VL - 711 IS - 1 M3 - Article SP - 773 EP - 780 PB - American Institute of Physics SN - 0094243X AB - Coated superconductors with biaxially oriented crystallites, such as in thick films of YBCO can carry large transport current density (105 to 106 A/cm2) in one tesla magnetic fields near liquid-nitrogen temperature (77 K). These coated superconductors which are prepared as wide tapes have excessive ac losses for practical power components. Possibilities for reducing these losses to the point where coated materials can be used for ac power applications such as generators, filter inductors and transformers are discussed. It is also pointed out that the use of coated conductors for such applications may require a complete redesign of the electrical components. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTORS KW - CRYOELECTRONICS KW - LOW temperature engineering KW - LOW temperatures KW - TEMPERATURE KW - THERMAL properties KW - ENGINEERING N1 - Accession Number: 13867261; Carr Jr., W. J. 1 Oberly, C. E. 2; Affiliation: 1: Consultant, Long Electromagnetics, Pittsburgh, PA, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: 2004, Vol. 711 Issue 1, p773; Subject Term: SUPERCONDUCTORS; Subject Term: CRYOELECTRONICS; Subject Term: LOW temperature engineering; Subject Term: LOW temperatures; Subject Term: TEMPERATURE; Subject Term: THERMAL properties; Subject Term: ENGINEERING; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.1774641 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13867261&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kang, B. S. AU - Mehandru, R. AU - Kim, S. AU - Ren, F. AU - Fitch, R. C. AU - Gillespie, J. K. AU - Moser, N. AU - Jessen, G. AU - Jenkins, T. AU - Dettmer, R. AU - Via, D. AU - Crespo, A. AU - Gila, B. P. AU - Abernathy, C. R. AU - Pearton, S. J. T1 - Hydrogen-induced reversible changes in drain current in Sc2O3/AlGaN/GaN high electron mobility transistors. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/06/07/ VL - 84 IS - 23 M3 - Article SP - 4635 EP - 4637 PB - American Institute of Physics SN - 00036951 AB - Pt contacted AlGaN/GaN high electron mobility transistors with Sc2O3 gate dielectrics show reversible changes in drain–source current upon exposure to H2-containing ambients, even at room temperature. The changes in current (as high as 3 mA for relatively low gate voltage and drain–source voltage) are approximately an order of magnitude larger than for Pt/GaN Schottky diodes and a factor of 5 larger than Sc2O3/AlGaN/GaN metal–oxide–semiconductor (MOS) diodes exposed under the same conditions. This shows the advantage of using a transistor structure in which the gain produces larger current changes upon exposure to hydrogen-containing ambients. The increase in current is the result of a decrease in effective barrier height of the MOS gate of 30–50 mV at 25 °C for 10% H2/90% N2 ambients relative to pure N2 and is due to catalytic dissociation of the H2 on the Pt contact, followed by diffusion to the Sc2O3/AlGaN interface. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSISTORS KW - ELECTRON mobility KW - DIODES KW - ELECTRONICS KW - ELECTRIC resistance KW - SEMICONDUCTORS N1 - Accession Number: 13203741; Kang, B. S. 1 Mehandru, R. 1 Kim, S. 1 Ren, F. 1 Fitch, R. C. 2 Gillespie, J. K. 2 Moser, N. 2 Jessen, G. 2 Jenkins, T. 2 Dettmer, R. 2 Via, D. 2 Crespo, A. 2 Gila, B. P. 3 Abernathy, C. R. 3 Pearton, S. J. 3; Email Address: spear@mse.ufl.edu; Affiliation: 1: Department of Chemical Engineering, University of FLorida, Gainesville, Florida 2: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson Air Force Base Dayton, Ohio 3: Department of Materials Science and Engineering, University of Florida, Gainesville, Florida; Source Info: 6/7/2004, Vol. 84 Issue 23, p4635; Subject Term: TRANSISTORS; Subject Term: ELECTRON mobility; Subject Term: DIODES; Subject Term: ELECTRONICS; Subject Term: ELECTRIC resistance; Subject Term: SEMICONDUCTORS; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.1759372 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13203741&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lang Hong AU - Ningzhou Cui AU - Pronobis, Mark T. AU - Scott, Stephen T1 - Simultaneous ground moving target tracking and identification using wavelets features from HRR data. JO - Information Sciences JF - Information Sciences Y1 - 2004/06/04/ VL - 162 IS - 3/4 M3 - Article SP - 249 EP - 274 SN - 00200255 AB - An algorithm for simultaneous ground moving target tracking and identification (ID) using both Ground Moving Target Indication (GMTI) radar reports and High Resolution Range (HRR) radar profiles is presented in this paper. The GMTI data provide target kinematics information and the HRR profiles deliver target ID information. Wavelet coefficients are first extracted from HRR profiles and then processed by a state- of-the-art wavelets-based statistical signal processing technique: wavelets domain hid- den Markov trees (HMT). A probabilistic approach is adopted to effectively track and identify ground moving targets in confusing scenarios. [ABSTRACT FROM AUTHOR] AB - Copyright of Information Sciences is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVELETS (Mathematics) KW - HARMONIC analysis (Mathematics) KW - ALGORITHMS KW - KINEMATICS KW - SIGNAL processing -- Digital techniques KW - PROBABILITY theory N1 - Accession Number: 13686701; Lang Hong 1; Email Address: lhong@cs.wright.edu Ningzhou Cui 1 Pronobis, Mark T. 2 Scott, Stephen 2; Affiliation: 1: Department of Electrical Engineering, Wright State University, Dayton, OH, USA 2: Information Directorate, AFR/IFEA, Air Force Research Laboratory, Rome, NY, USA; Source Info: Jun2004, Vol. 162 Issue 3/4, p249; Subject Term: WAVELETS (Mathematics); Subject Term: HARMONIC analysis (Mathematics); Subject Term: ALGORITHMS; Subject Term: KINEMATICS; Subject Term: SIGNAL processing -- Digital techniques; Subject Term: PROBABILITY theory; Number of Pages: 26p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13686701&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucia, David J. AU - Beran, Philip S. T1 - Reduced-Order Model Development Using Proper Orthogonal Decomposition and Volterra Theory. JO - AIAA Journal JF - AIAA Journal Y1 - 2004/06// VL - 42 IS - 6 M3 - Article SP - 1181 EP - 1190 SN - 00011452 AB - A new approach for generating reduced-order models of fluid systems was developed using proper orthogonal decomposition in combination with Volterra theory. The method involves identifying fluid basis functions with proper orthogonal decomposition and applying systems realization theory to generate a low-dimensional model for the scalar coefficients. The method was tested on a two-dimensional inviscid flow over a bump with forcing. Eight fluid basis functions were identified, and the eigensystem realization algorithm was used to identify an eight-state, reduced-order model. Time histories of both the reduced-order coefficients and the expanded flowfield data accurately tracked the full-order results in both amplitude and phase (average error less than 5%). The reduced-order model demonstrated four-orders-of-magnitude reduction in compute time relative to the full system, which represents a computational improvement on the same order as the reduction in degrees of freedom. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUID dynamics KW - MATHEMATICAL models KW - DECOMPOSITION (Mathematics) KW - VOLTERRA equations KW - EIGENFUNCTIONS KW - FUNCTIONS (Mathematics) N1 - Accession Number: 13673393; Lucia, David J. 1; Email Address: david.lucia@wpafb.af.mil Beran, Philip S. 1; Email Address: philip.beran@wpafb.af.mil; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7531; Source Info: Jun2004, Vol. 42 Issue 6, p1181; Subject Term: FLUID dynamics; Subject Term: MATHEMATICAL models; Subject Term: DECOMPOSITION (Mathematics); Subject Term: VOLTERRA equations; Subject Term: EIGENFUNCTIONS; Subject Term: FUNCTIONS (Mathematics); Number of Pages: 10p; Illustrations: 1 Black and White Photograph, 1 Chart, 21 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13673393&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Seung-Kyum Choi AU - Grandhi, Ramana V. AU - Canfield, Robert A. AU - Petti, Chris L. T1 - Polynomial Chaos Expansion with Latin Hypercube Sampling for Estimating Response Variability. JO - AIAA Journal JF - AIAA Journal Y1 - 2004/06// VL - 42 IS - 6 M3 - Article SP - 1191 EP - 1198 SN - 00011452 AB - A computationally efficient procedure for quantifying uncertainty and finding significant parameters of uncertainty models is presented. To deal with the random nature of input parameters of structural models, several efficient probabilistic methods are investigated. Specifically, the polynomial chaos expansion with Latin hypercube sampling is used to represent the response of an uncertain system. Latin hypercube sampling is employed for evaluating the generalized Fourier coefficients of the polynomial chaos expansion. Because the key challenge in uncertainty analysis is to find the most significant components that drive response variability, analysis of variance is employed to find the significant parameters of the approximation model. Several analytical examples and a large finite element model of a joined-wing are used to verify the effectiveness of this procedure. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHAOS theory KW - POLYNOMIALS KW - MATHEMATICAL models KW - PROBABILITY theory KW - ANALYSIS of variance KW - APPROXIMATION theory N1 - Accession Number: 13673394; Seung-Kyum Choi 1; Email Address: schoi@cs.wright.edu Grandhi, Ramana V. 2; Email Address: rgrandhi@cs.wright.edu Canfield, Robert A. 3; Email Address: robert.canfield@afit.edu Petti, Chris L. 4; Email Address: chris.pettit@wpafb.af.mil; Affiliation: 1: Graduate Research Assistant, Department of Mechanical and Materials Engineering, Wright State University, Dayton, Ohio 45435 2: Distinguished Professor, Department of Mechanical and Materials Engineering, Wright State University, Dayton, Ohio 45435 3: Associate Professor, Aerospace Engineering, U.S. Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433 4: Research Aerospace Engineer, AFRL/VASD, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Jun2004, Vol. 42 Issue 6, p1191; Subject Term: CHAOS theory; Subject Term: POLYNOMIALS; Subject Term: MATHEMATICAL models; Subject Term: PROBABILITY theory; Subject Term: ANALYSIS of variance; Subject Term: APPROXIMATION theory; Number of Pages: 8p; Illustrations: 3 Diagrams, 2 Charts, 8 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13673394&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roderick, Mike T1 - UNITED STATES V. HENDERSON: SPECIAL COURT-MARTIAL CONVENING AUTHORITY CANNOT REFER A CAPITAL CHARGE. JO - Air Force Law Review JF - Air Force Law Review Y1 - 2004/06// VL - 55 M3 - Article SP - 371 EP - 375 PB - Superintendent of Documents SN - 00948381 AB - Criticizes the lack of special court-martial jurisdiction on capital charge of hazarding a vessel as implied in the case, United States v. Henderson. Charges filed against Henderson, who was Damage Controlman Fireman Apprentice onboard the USS TARAWA vessel; Possibility that a pre-trial agreement be construed as a new referral of the non-capital lesser-included charge; Principles of notice pleading. KW - JURISDICTION KW - DANGER (Law) KW - COURTS-martial & courts of inquiry KW - ACTIONS & defenses (Law) -- United States KW - PLEADING (Criminal procedure) KW - CRIMINAL procedure KW - MILITARY law KW - UNITED States N1 - Accession Number: 15274579; Roderick, Mike 1,2,3; Affiliation: 1: Judge Advocate, United States Air Force 2: Instructor, International and Operations Law Division, Air Force Judge Advocate General School, Maxwell Air Force Base, Alabama 3: Member of the Bar, state of Texas and Louisiana; Source Info: 2004, Vol. 55, p371; Subject Term: JURISDICTION; Subject Term: DANGER (Law); Subject Term: COURTS-martial & courts of inquiry; Subject Term: ACTIONS & defenses (Law) -- United States; Subject Term: PLEADING (Criminal procedure); Subject Term: CRIMINAL procedure; Subject Term: MILITARY law; Subject Term: UNITED States; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15274579&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ashcroft, Bruce T1 - Like Sex with Gods: An Unorthodox History of Flying (Book). JO - Air Power History JF - Air Power History Y1 - 2004///Summer2004 VL - 51 IS - 2 M3 - Book Review SP - 50 EP - 52 PB - Air Force Historical Foundation SN - 1044016X AB - Reviews the book "Like Sex with Gods: An Unorthodox History of Flying," by Bayla Singer. KW - AERONAUTICS KW - NONFICTION KW - SINGER, Bayla KW - LIKE Sex With Gods (Book) N1 - Accession Number: 13377489; Ashcroft, Bruce 1; Affiliation: 1: HQ Air Education and Training Command History Office; Source Info: Summer2004, Vol. 51 Issue 2, p50; Subject Term: AERONAUTICS; Subject Term: NONFICTION; Reviews & Products: LIKE Sex With Gods (Book); NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; People: SINGER, Bayla; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13377489&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Phillips, C.A. AU - Repperger, D.W. AU - Neidhard-Doll, A.T. AU - Reynolds, D.B. T1 - Biomimetic model of skeletal muscle isometric contraction: I. an energetic–viscoelastic model for the skeletal muscle isometric force twitch JO - Computers in Biology & Medicine JF - Computers in Biology & Medicine Y1 - 2004/06// VL - 34 IS - 4 M3 - Article SP - 307 SN - 00104825 AB - This paper describes a revision of the Hill-type muscle model so that it will describe the chemo-mechanical energy conversion process (energetic) and the internal-element stiffness variation (viscoelastic) during a skeletal muscle isometric force twitch contraction. The derivation of this energetic–viscoelastic model is described by a first-order linear ordinary differential equation with constant energetic and viscoelastic coefficients. The model has been implemented as part of a biomimetic model, which describes the excitation–contraction coupling necessary to drive the energetic–viscoelastic model. Finally, the energetic–viscoelastic model is validated by comparing its isometric force–time profile with that of various muscles reported in the literature. [Copyright &y& Elsevier] AB - Copyright of Computers in Biology & Medicine is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MUSCLES KW - ENERGY conversion KW - DIFFERENTIAL equations KW - VISCOELASTICITY KW - Biomimetic KW - Energetic KW - Hill model KW - Isometric force twitch KW - Skeletal muscle KW - Viscoelastic N1 - Accession Number: 12962772; Phillips, C.A. 1; Email Address: chandler.phillips@wright.edu Repperger, D.W. 2 Neidhard-Doll, A.T. 1 Reynolds, D.B. 1; Affiliation: 1: Department of Biomedical, Industrial, and Human Factors Engineering, Wright State University, 204 Russ Engineering Center, Dayton, OH 45435, USA 2: Air Force Research Laboratory, WPAFB, OH 45433, USA; Source Info: Jun2004, Vol. 34 Issue 4, p307; Subject Term: MUSCLES; Subject Term: ENERGY conversion; Subject Term: DIFFERENTIAL equations; Subject Term: VISCOELASTICITY; Author-Supplied Keyword: Biomimetic; Author-Supplied Keyword: Energetic; Author-Supplied Keyword: Hill model; Author-Supplied Keyword: Isometric force twitch; Author-Supplied Keyword: Skeletal muscle; Author-Supplied Keyword: Viscoelastic; Number of Pages: 16p; Document Type: Article L3 - 10.1016/S0010-4825(03)00061-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12962772&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Neidhard-Doll, A.T. AU - Phillips, C.A. AU - Repperger, D.W. AU - Reynolds, D.B. T1 - Biomimetic model of skeletal muscle isometric contraction: II. A phenomenological model of the skeletal muscle excitation–contraction coupling process JO - Computers in Biology & Medicine JF - Computers in Biology & Medicine Y1 - 2004/06// VL - 34 IS - 4 M3 - Article SP - 323 SN - 00104825 AB - This paper describes a new macroscopic, phenomenological model of the skeletal muscle excitation–contraction coupling process, as represented by four principal and consecutive compartments (biophysical, biochemical, and biomechanical phases) characteristic of isometric excitation–contraction coupling in mammalian skeletal muscle, and coupled by a system of simultaneous, first-order linear ordinary differential equations. The model is based upon biological compartmental transport kinetics and irreversible thermodynamic energy transformation, and represents a distinct improvement over other biomimetic models. The model was derived using physiological parameter data published in the literature, and validated using MATLAB R12TM. [Copyright &y& Elsevier] AB - Copyright of Computers in Biology & Medicine is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MUSCLES KW - THERMODYNAMICS KW - ENERGY conversion KW - BIOMIMETICS (Chemistry) KW - Biomimetic KW - Compartmental model KW - Energetic KW - Hill model KW - Isometric force twitch KW - Skeletal muscle KW - Viscoelastic N1 - Accession Number: 12962773; Neidhard-Doll, A.T. 1 Phillips, C.A. 1; Email Address: chandler.phillips@wright.edu Repperger, D.W. 2 Reynolds, D.B. 1; Affiliation: 1: Department of Biomedical, Industrial, and Human Factors Engineering, 207, Russ Engineering Center, Wright State University, Dayton, OH 45435-0001, USA 2: Air Force Research Laboratory, WPAFB, OH 45433, USA; Source Info: Jun2004, Vol. 34 Issue 4, p323; Subject Term: MUSCLES; Subject Term: THERMODYNAMICS; Subject Term: ENERGY conversion; Subject Term: BIOMIMETICS (Chemistry); Author-Supplied Keyword: Biomimetic; Author-Supplied Keyword: Compartmental model; Author-Supplied Keyword: Energetic; Author-Supplied Keyword: Hill model; Author-Supplied Keyword: Isometric force twitch; Author-Supplied Keyword: Skeletal muscle; Author-Supplied Keyword: Viscoelastic; Number of Pages: 22p; Document Type: Article L3 - 10.1016/S0010-4825(03)00062-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12962773&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Harvey, D. AU - Danial, A. AU - Davis, T. AU - Godden, J. AU - Jackson, M. AU - McCuskey, J. AU - Valenzuela, P. T1 - Advanced cryocooler electronics for space JO - Cryogenics JF - Cryogenics Y1 - 2004/06// VL - 44 IS - 6-8 M3 - Article SP - 589 EP - 593 SN - 00112275 AB - Space pulse-tube cryocoolers require electronics to control the cooling temperature and self-induced vibration. Other functions include engineering diagnostics, telemetry and safety protection of the unit against extreme environments and operational anomalies. The electronics must survive the harsh conditions of launch and orbit, and in some cases severe radiation environments for periods exceeding 10 years. A number of our current generation high reliability radiation hardened electronics units have been launched and others are in various stages of assembly or integration on a number of space flight programs. This paper describes the design features and performance of our next generation flight electronics designed for the STSS payloads. The electronics provides temperature control with better than +/-50 mK short-term stability. Self-induced vibration is controlled to low levels on all harmonics up to the 16th. A unique active power filter limits peak-to-peak reflected ripple current on the primary power bus to less than 3% of the average DC current. The 3 kg unit is capable of delivering 180 W continuous to NGST''s high-efficiency cryocooler (HEC). [Copyright &y& Elsevier] AB - Copyright of Cryogenics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOW temperature engineering KW - COOLING power (Meteorology) KW - DIGITAL electronics KW - ASTRODYNAMICS KW - Digital electronics (F) KW - Pulse tube (E) KW - Space cryogenics (F) N1 - Accession Number: 13397304; Harvey, D. 1; Email Address: dave.harvey@ngc.com Danial, A. 2 Davis, T. 3 Godden, J. 2 Jackson, M. 2 McCuskey, J. 2 Valenzuela, P. 2; Affiliation: 1: Dave Harvey M/S R9/1817, Northrop Grumman Space Technology, One Space Park, Redondo Beach, CA 90278, USA 2: Northrop Grumman Space Technology, Redondo Beach, CA 90278, USA 3: Air Force Research Laboratory, Albuquerque, NM 87117, USA; Source Info: Jun2004, Vol. 44 Issue 6-8, p589; Subject Term: LOW temperature engineering; Subject Term: COOLING power (Meteorology); Subject Term: DIGITAL electronics; Subject Term: ASTRODYNAMICS; Author-Supplied Keyword: Digital electronics (F); Author-Supplied Keyword: Pulse tube (E); Author-Supplied Keyword: Space cryogenics (F); Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.cryogenics.2004.03.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13397304&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fawaz, S.A. AU - Andersson, Börje T1 - Accurate stress intensity factor solutions for corner cracks at a hole JO - Engineering Fracture Mechanics JF - Engineering Fracture Mechanics Y1 - 2004/06// VL - 71 IS - 9/10 M3 - Article SP - 1235 SN - 00137944 AB - Laboratory test and in-service experience shows fatigue cracks at holes exhibit unsymmetric growth; thus, the need for the new solutions is paramount. Stress intensity factor, K, solutions for symmetric and unsymmetric corner cracks at a hole subject to general loading were determined using a hp-version of the finite element method (FEM) in conjunction with a mathematical splitting scheme to enable efficient, accurate calculations. In traditional applications of the FEM, mesh generation is labor intensive; however, using the splitting scheme, stress intensity functions are obtained without explicitly including the crack in the FE mesh of the global structure. By using the hp-version of FEM, a set of K-solutions converging exponentially fast to the exact solution is obtained. The crack is analyzed in the local domain with easily generated FE meshes. All structurally significant crack shapes were considered; specifically, crack depth to crack length ratios (a/c) of 0.1–10.0, crack depth to sheet thickness ratios (a/t) of 0.10–0.99, and hole radius to sheet thickness ratios (r/t)=1.0. The loading conditions were remote tension, remote bending, and pin loading (bearing). In addition, all combinations of a/c and a/t are analyzed at each side of the hole; thus 226,875 solutions were developed with control of the error in the computed K solutions. Calculated relative error is generally much smaller than 1% along the entire crack front including the vertex regions. Comparisons are made to solutions in the open literature. The new K solutions show the literature solutions are, in general, accurate for all three load conditions; however, for the extreme cases of a/c, a/t, and r/t; the literature solutions differ by as much as 26%. [Copyright &y& Elsevier] AB - Copyright of Engineering Fracture Mechanics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPLITTING (Psychology) KW - LOADING & unloading KW - GROWTH KW - Corner crack KW - Finite element analysis KW - hp-Version KW - Stress intensity factor KW - Vertex N1 - Accession Number: 12096720; Fawaz, S.A. 1; Email Address: scott.fawaz@usafa.af.mil Andersson, Börje 2; Email Address: ba@foi.se; Affiliation: 1: Department of Engineering Mechanics, United States Air Force Academy, USAF Academy, Colorado 80840, USA 2: Aeronautics Division, Swedish Defense Research Agency, Box 110 21, SE-161 11 Bromma, Sweden; Source Info: Jun2004, Vol. 71 Issue 9/10, p1235; Subject Term: SPLITTING (Psychology); Subject Term: LOADING & unloading; Subject Term: GROWTH; Author-Supplied Keyword: Corner crack; Author-Supplied Keyword: Finite element analysis; Author-Supplied Keyword: hp-Version; Author-Supplied Keyword: Stress intensity factor; Author-Supplied Keyword: Vertex; Number of Pages: 20p; Document Type: Article L3 - 10.1016/S0013-7944(03)00207-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12096720&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, Martin L. T1 - ETHICAL AND LEGAL DIMENSIONS OF THE BUSH "PREEMPTION" STRATEGY. JO - Harvard Journal of Law & Public Policy JF - Harvard Journal of Law & Public Policy Y1 - 2004///Summer2004 VL - 27 IS - 3 M3 - Article SP - 797 EP - 815 PB - Harvard Law School Journals SN - 01934872 AB - Assesses the implications of the shift in U.S. national security strategy using legal and ethical perspective. Importance of the National Security Strategy of the United States of America (NSS) statement issued by each U.S. president; Legal and ethical framework for assessing the use of military force; Implication of the U.S. security situation following the September 11, 2001 terrorist attacks on the justification of the NSS of U.S. President George W. Bush; Emergence of international order. KW - NATIONAL security -- United States KW - LAW KW - ETHICS KW - MILITARY policy KW - SEPTEMBER 11 Terrorist Attacks, 2001 KW - INTERNATIONAL cooperation KW - UNITED States KW - BUSH, George W. (George Walker), 1946- N1 - Accession Number: 15267775; Cook, Martin L. 1; Affiliation: 1: Professor, Department of Philosophy, United States Air Force Academy; Source Info: Summer2004, Vol. 27 Issue 3, p797; Subject Term: NATIONAL security -- United States; Subject Term: LAW; Subject Term: ETHICS; Subject Term: MILITARY policy; Subject Term: SEPTEMBER 11 Terrorist Attacks, 2001; Subject Term: INTERNATIONAL cooperation; Subject Term: UNITED States; NAICS/Industry Codes: 928110 National Security; People: BUSH, George W. (George Walker), 1946-; Number of Pages: 19p; Document Type: Article; Full Text Word Count: 7586 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15267775&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morgan, H. Wayne AU - Yoder, John C. AU - Schiller, Wendy J. AU - Kaminski, Theresa AU - Williams, Arden AU - Gabriel, Michael P. AU - Burk, Robert F. AU - Kersten, Andrew E. AU - Tong, Benson AU - Heidler, Jeanne T. AU - Heidler, David S. AU - Kuecker, Glen David AU - Skaggs, David Curtis AU - Cox, Thomas C. AU - Moneyhon, Carl H. AU - Cogliano, Frank AU - Wajda, Shirley Teresa AU - Muir Jr., Malcolm AU - Yates, Charles L. AU - Woodworth, Steven E. T1 - Book Reviews. JO - Historian JF - Historian Y1 - 2004///Summer2004 VL - 66 IS - 2 M3 - Book Review SP - 335 EP - 420 PB - Wiley-Blackwell SN - 00182370 AB - David T. Courtwright. Forces of Habit: Drugs and the Making of the Modern World. Richard Davenport-Hines. The Pursuit of Oblivion: A Global History of Narcotics. Ch. Didier Gondola. The History of the Congo. Kenneth R. Bowling and Donald R. Kennon, eds. The House & Senate in the 1790s: Petitioning, Lobbying, and Institutional Development. Anne M. Boylan. The Origins of Women's Activism: New York and Boston, 1797–1840. Sherri Broder. Tramps, Unfit Mothers, and Neglected Children: Negotiating the Family in Nineteenth-Century Philadelphia. Thomas E. Chávez. Spain and the Independence of the United States: An Intrinsic Gift. Christopher H. Evans and William R. Herzog II. The Faith of 50 Million: Baseball, Religion, and American Culture. Hugh E. Evans. The Hidden Campaign: FDR's Health and the 1944 Election. Max Evans. Madam Millie: Bordellos from Silver City to Ketchikan. Paul Foos. A Short, Offhand, Killing Affair: Soldiers and Social Conflict During the Mexican-American War. Michael J. Gonzales. The Mexican Revolution, 1910–1940. Barry Gough. Fighting Sail on Lake Huron and Georgian Bay: The War of 1812 and Its Aftermath. Wilbert L. Jenkins. Climbing Up to Glory: A Short History of African-Americans During the Civil War and Reconstruction. Clayton E. Jewett. Texas in the Confederacy: An Experiment in Nation Building. Marjoleine Kars. Breaking Loose Together: The Regulator Rebellion in Pre-Revolutionary North Carolina. Sarah A. Leavitt. From Catharine Beecher to Martha Stewart: A Cultural History of Domestic Advice. Mitchell B. Lerner. The Pueblo Incident: A Spy Ship and the Failure of American Foreign Policy. Tim Maga. America Attacks Japan: The Invasion That Never Was. James M. McPherson. Crossroads of Freedom: Antietam. Rusty L. Monhollon. “This Is America?”: The Sixties in Lawrence, Kansas. Edmund S. Morgan. Benjamin Franklin. Iwan Morgan. Nixon. Alexander Nemerov. The Body of Raphaelle Peale: Still Life and Selfhood, 1812–1824. Thomas C. Parramore. First to Fly: North Carolina and the Beginnings of Aviation. Donald J. Pisani. Water and American Government: The Reclamation Bureau, National Water Policy, and the West, 1902–1935. Sarah J. Purcell. Sealed with Blood: War, Sacrifice, and Memory in Revolutionary America. David Rock. State Building and Political Movement in Argentina, 1860–1916. Hal Rothman. Neon Metropolis: How Las Vegas Started the Twenty-First Century. Jeffrey Sklansky. The Soul's Economy: Market Society and Selfhood in American Thought, 1820–1920. Gene Smiley. Rethinking the Great Depression. John Stauffer. The Black Hearts of Men: Radical Abolitionists and the Transformation of Race. Julia E. Sweig. Inside the Cuban Revolution: Fidel Castro and the Urban Underground. Conevery Bolton Valencius. The Health of the Country: How American Settlers Understood Themselves and Their Land. Thomas L. Whigham. Causes and Early Conflict. Volume I of The Paraguayan War. Kenneth Hammond, ed. The Human Tradition in Premodern China. Donald Keene. Emperor of Japan: Meiji and His World, 1852–1912. Andrei Lankov. From Stalin to Kim Il Sung: The Formation of North Korea, 1945–1960. Hajime Nakamura. History of Japanese Thought. B. R. Nanda. In Search of Gandhi: Essays and Reflections. Maurizio Peleggi. Lords of Things: The Fashioning of the Siamese Monarchy's Modern Image. Jan Assman, Andrew Jenkins trans. The Mind of Egypt: History and Meaning in the Time of the Pharaohs. Roman Brackman. The Secret File of Joseph Stalin: A Hidden Life. Victor Brombert. Trains of Thought: Memories of a Stateless Youth. Robert Bartlett, ed. Life and Miracles of St. Modwenna. Arne Sø Christensen. Cassiodorus, Jordanes, and the History of the Goths: Studies in a Migration Myth. Barbara Evans Clements, Rebecca Friedman, and Dan Healey. Russian Masculinities in History and Culture. Jamie H. Cockfield. White Crow: The Life and Times of the Grand Duke Nicholas Mikhailovich Romanov, 1859–1919. Steve Craig. Sports and Games of the Ancients. J. A. Everard. Brittany and the Angevins: Province and Empire, 1158–1203. David Garrioch. The Making of Revolutionary Paris. Lawrence Goldman. Science, Reform, and Politics in Victorian Britain: The Social Science Association, 1857–1886. Erich S. Gruen. Diaspora: Jews amongst Greeks and Romans. Catherine Hall. Civilising Subjects: Metropole and Colony in the English Imagination, 1830–1867. Jill Harsin. Barricades: The War of the Streets in Revolutionary Paris, 1830–1848. Ronald Hayman. A Life of Jung. Feiwel Kupferberg. The Rise and Fall of the German Democratic Republic. A. E. MacRobert. Mary, Queen of Scots and the Casket Letters. Peter Marshall. Beliefs and the Dead in Reformation England. Raymond Mentzer and Andrew Spicer, eds. Society and Culture in the Huguenot World, 1559–1685. Fergus Millar. Hannah M. Cotton and Guy M. Rogers, eds. The Roman Republic and the Augustan Revolution. D. Alan Orr. Treason and the State: Law, Politics, and Ideology in the English Civil War. Constantine Pleshakov. The Tsar's Last Armada: The Epic Journey to the Battle of Tsushima. Paul Robinson. The White Russian Army in Exile, 1920–1941. Michael Shermer and Alex Grobman. Denying History: Who Says the Holocaust Never Happened and Why Do They Say It? Jessica Warner. Craze: Gin and Debauchery in an Age of Reason. Diana Webb. Medieval European Pilgrimage. Donald E. Davis and Eugene P. Trani. The First Cold War: The Legacy of Woodrow Wilson in U.S.-Soviet Relations. Eric M. Freedman. Habeas Corpus: Rethinking the Great Writ of Liberty. Azar Gat. A History of Military Thought: From the Enlightenment to the Cold War. Peter Karsten. Between Law and Custom: “High” and “Low” Legal Cultures in the Lands of the British Diaspora: The United States, Canada, Australia, and New Zealand, 1600–1900. Henryk Kierzkowski. Europe and Globalization. Alan Krell. The Devil's Rope: A Cultural History of Barbed Wire. John A. Lynn. Battle: A History of Combat and Culture From Ancient Greece to Modern America. Patrick Wright. Tank: The Progress of a Monstrous War Machine. [ABSTRACT FROM AUTHOR] AB - Copyright of Historian is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONFICTION KW - BOYLAN, Anne M. KW - BOWLING, Kenneth R. KW - COURTWRIGHT, David T. KW - DAVENPORT-Hines, R. P. T. (Richard Peter Treadwell), 1953- KW - FORCES of Habit: Drugs & the Making of the Modern World (Book) KW - PURSUIT of Oblivion, The (Book) KW - HISTORY of Congo, The (Book) KW - HOUSE & Senate in the 1790s: Petitioning, Lobbying & Institutional Development, The (Book) KW - ORIGINS of Women's Activism: New York & Boston 1794-1840, The (Book) N1 - Accession Number: 13133698; Morgan, H. Wayne 1 Yoder, John C. 2 Schiller, Wendy J. 3 Kaminski, Theresa 4 Williams, Arden 5 Gabriel, Michael P. 6 Burk, Robert F. 7 Kersten, Andrew E. 8 Tong, Benson 9 Heidler, Jeanne T. 10 Heidler, David S. 11 Kuecker, Glen David 12 Skaggs, David Curtis 13 Cox, Thomas C. 14 Moneyhon, Carl H. 15 Cogliano, Frank 16 Wajda, Shirley Teresa 17 Muir Jr., Malcolm 18 Yates, Charles L. 19 Woodworth, Steven E. 20; Affiliation: 1: University of Oklahoma 2: Whitworth College 3: Brown University 4: University of Wisconsin-Stevens Point 5: National Archives Southeast Region (State University of West Georgia) 6: Kutztown University of Pennsylvania 7: Muskingum College 8: University of Wisconsin-Green Bay 9: Wichita State University 10: United States Air Force Academy 11: University of Southern Colorado 12: DePauw University 13: Bowling Green State University 14: University of Southern California 15: University of Arkansas at Little Rock 16: University of Edinburgh 17: Kent State University 18: Austin Peay State University 19: Earlham College 20: Texas Christian University; Source Info: Summer2004, Vol. 66 Issue 2, p335; Subject Term: NONFICTION; Reviews & Products: FORCES of Habit: Drugs & the Making of the Modern World (Book); Reviews & Products: PURSUIT of Oblivion, The (Book); Reviews & Products: HISTORY of Congo, The (Book); Reviews & Products: HOUSE & Senate in the 1790s: Petitioning, Lobbying & Institutional Development, The (Book); Reviews & Products: ORIGINS of Women's Activism: New York & Boston 1794-1840, The (Book); People: BOYLAN, Anne M.; People: BOWLING, Kenneth R.; People: COURTWRIGHT, David T.; People: DAVENPORT-Hines, R. P. T. (Richard Peter Treadwell), 1953-; Number of Pages: 86p; Document Type: Book Review L3 - 10.1111/j.0018-2370.2004.00074.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13133698&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lopez, Mike R. AU - Gilgenbach, Ronald M. AU - Jones, Michael C. AU - White, William M. AU - Jordan, David W. AU - Johnston, Mark D. AU - Strickler, Trevor S. AU - Neculaes, V. Bogdan AU - Yue Ying Lau AU - Spencer, Thomas A. AU - Haworth, Michael D. AU - Cartwright, Keith L. AU - Mardahl, Peter J. AU - Luginsland, John W. AU - Price, David T1 - Relativistic Magnetron Driven by a Microsecond B-Beam Accelerator With a Ceramic Insulator. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/06//Jun2004 Part 1 of 2 VL - 32 IS - 3 M3 - Article SP - 1171 EP - 1180 SN - 00933813 AB - Relativistic magnetron experiments performed on a six-cavity device have generated over 300 MW total microwave power near 1 GHz. These experiments were driven by the long- pulse electron beam from an accelerator with parameters as follows: voltage of -300 kV, current of 1-JO kA, and typical pulse-length of 0.5 μs. This paper reports investigations of high-power microwave generation, mode competition, and pulse shortening for the relativistic magnetron with a ceramic insulator compared to a plastic insulator. The ceramic insulator improves the vacuum by a factor of ten (to 107 torr range) and flattens the voltage of the accelerator. Relativistic magnetron performance with the ceramic insulator shows increased microwave power and pulselength over the plastic insulator. Effects of RF breakdown in the extraction wave- guide on peak microwave power and pulselength are also investigated by utilizing SF6 in one or both of the extraction waveguides. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON beams KW - WAVEGUIDES KW - GYRATORS KW - ELECTRIC apparatus & appliances KW - MICROWAVE transmission lines KW - RADIO technology -- Equipment & supplies N1 - Accession Number: 14268247; Lopez, Mike R. 1 Gilgenbach, Ronald M. 2; Email Address: rongilg@umich.edu Jones, Michael C. 2 White, William M. 2 Jordan, David W. 2 Johnston, Mark D. 2 Strickler, Trevor S. 2 Neculaes, V. Bogdan 2 Yue Ying Lau 2 Spencer, Thomas A. 3 Haworth, Michael D. 3 Cartwright, Keith L. 3 Mardahl, Peter J. 3 Luginsland, John W. 4 Price, David 5; Affiliation: 1: Sandia National Laboratories Albuquerque, NM 7l85-1193 USA. 2: Intense Energy Beam Interaction Laboratory, Department of Nuclear Engineering and Radiological Sciences. University of Michigan, Ann Arbor. Ml 48 109-2104 USA. 3: Air Force Research Laboratory, Phillips Site, Kirtland AFB, NM 87117-5776 USA. 4: Numerex, Ithaca, NY 14850 USA. 5: Titan Corporation, San Leandro, CA 94577 USA.; Source Info: Jun2004 Part 1 of 2, Vol. 32 Issue 3, p1171; Subject Term: ELECTRON beams; Subject Term: WAVEGUIDES; Subject Term: GYRATORS; Subject Term: ELECTRIC apparatus & appliances; Subject Term: MICROWAVE transmission lines; Subject Term: RADIO technology -- Equipment & supplies; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 811412 Appliance Repair and Maintenance; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; NAICS/Industry Codes: 335990 All other electrical equipment and component manufacturing; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 443143 Appliance, television and other electronics stores; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 10p; Document Type: Article L3 - 10.1109/TPS.2004.828898 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14268247&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shiffler, Donald A. AU - Luginsland, J. AU - Ruebush, M. AU - Lacour, M. AU - Golby, K. AU - Cartwright, K. AU - Haworth, M. AU - Spencer, T. T1 - Emission Uniformity and Shot-to-Shot Variation in Cold Field Emission Cathodes. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/06//Jun2004 Part 1 of 2 VL - 32 IS - 3 M3 - Article SP - 1262 EP - 1266 SN - 00933813 AB - High-power microwave tubes require currents and voltages generally in excess of 1 kA and 100 kV. In the past, these system requirements led to the use of single shot machines, with repetition rates well under 1 Hz. With advances in pulsed power, the Air Force Research Laboratory recently began to investigate the performance of field emission diodes at repetition rate operation. Greater numbers of shots allowed better accuracy in measurements and the application of better statistics to experimental data. In this paper, we report on new measurements that, with better experimental accuracy, show the statistical correlation between emission uniformity and the shot-to-shot variation in diode current. We report on a comparison to particle-in-cell simulations. These comparisons show the importance of randomly occurring nonemission regions on the cathode surface in dictating the spread in current data. These results imply that uniformity, in addition to playing an important role in any electron interaction with radiation, also affects the current stability for any device using these cathodes. Finally, these experiments show that for repetition rate machines, shot-to-shot variation quantified in terms of Gaussian distributions characterized by a standard deviation and skewness, provide a diagnostic capable of inferring beam uniformity in situations where direct uniformity diagnostics prove extremely difficult or impractical. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON tubes KW - DIODES KW - REGRESSION analysis KW - MICROWAVE devices KW - CATHODES KW - GAUSSIAN distribution N1 - Accession Number: 14268258; Shiffler, Donald A. 1; Email Address: Don.Shiffler@kirtland.al.mil Luginsland, J. 2 Ruebush, M. 3; Email Address: mdruebu@sandia.gov Lacour, M. 2 Golby, K. 2 Cartwright, K. 1 Haworth, M. 1 Spencer, T. 1; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, NM 87117 USA. 2: Science Applications International Corporation, Albuquerque. NM 87106 USA. 3: Sandia National Laboratory, Albuquerque, NM 87185 USA.; Source Info: Jun2004 Part 1 of 2, Vol. 32 Issue 3, p1262; Subject Term: ELECTRON tubes; Subject Term: DIODES; Subject Term: REGRESSION analysis; Subject Term: MICROWAVE devices; Subject Term: CATHODES; Subject Term: GAUSSIAN distribution; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 327212 Other Pressed and Blown Glass and Glassware Manufacturing; NAICS/Industry Codes: 327215 Glass Product Manufacturing Made of Purchased Glass; NAICS/Industry Codes: 327214 Glass manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TPS.2004.827608 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14268258&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiao, C.Q. AU - DeJoseph Jr., C.A. AU - Garscadden, A. T1 - Ion chemistry in diethylzinc JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2004/06// VL - 235 IS - 1 M3 - Article SP - 83 EP - 89 SN - 13873806 AB - Electron impact ionization of diethylzinc has been measured by Fourier transform mass spectrometry. The ionization produces the parent ion ZnC4H10+ and fragment ions including major metal-containing ions ZnC2H5+ and Zn+, as well as organic moiety ions, mainly C2H5+. The total ionization cross-section reaches a maximum of 7.9×10-16 cm2 at ∼80 eV. Redistribution of the ion composition by ion–molecule reactions results in the ionic population being dominated by the final product ion ZnC8H17+. Several dimer ions have been observed as the intermediate products in the ion–molecule reactions, but no larger Zn cluster ions have been detected. The argon ion charge-transfer reaction with diethylzinc generates mainly ZnC2H5+ and C2H5+. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON impact ionization KW - ELECTRONIC excitation KW - DIETHYL sulfate KW - ZINC KW - Diethylzinc KW - Electron collision KW - Ion–molecule reaction KW - Ionization cross-section N1 - Accession Number: 13237499; Jiao, C.Q. 1 DeJoseph Jr., C.A. 2 Garscadden, A. 2; Email Address: alan.garscadden@wpafb.af.mil; Affiliation: 1: Innovative Scientific Solutions Inc., Dayton, OH 45440-3638, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7251, USA; Source Info: Jun2004, Vol. 235 Issue 1, p83; Subject Term: ELECTRON impact ionization; Subject Term: ELECTRONIC excitation; Subject Term: DIETHYL sulfate; Subject Term: ZINC; Author-Supplied Keyword: Diethylzinc; Author-Supplied Keyword: Electron collision; Author-Supplied Keyword: Ion–molecule reaction; Author-Supplied Keyword: Ionization cross-section; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijms.2004.04.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13237499&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lin, Lanchao AU - Ponnappan, Rengasamy AU - Kenning, D. B. R. T1 - Critical Heat Flux of Multi-Nozzle Spray Cooling. JO - Journal of Heat Transfer JF - Journal of Heat Transfer Y1 - 2004/06// VL - 126 IS - 3 M3 - Article SP - 482 EP - 485 SN - 00221481 AB - Tiny nozzles are developed that are capable of creating the swirling flow necessary to generate a full cone spray. Eight miniature nozzles are embedded in a multi-nozzle plate used to generate a spray array for the cooling of high heat flux laser diodes. The target spray cooling area is a 1 X 2 cm² flat surface of a copper heater plate. A closed loop spray cooling test setup is established. FC-87, FC-72 and methanol are used as the working fluids. Critical heat flux (CHF) is experimentally investigated at various spray saturation temperatures and nozzle pressure drops (from 0.690 bar to 3.10 bar). B is demonstrated that the spray cooler can reach the CHF levels up to 91.5 W/cm² with FC-87 and 490 W/cm² with methanol. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Heat Transfer is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NOZZLES KW - FLUID mechanics KW - HEAT transfer KW - METHANOL KW - COPPER KW - Boiling KW - Cooling KW - Heat Transfer KW - Sprays KW - Two-Phase KW - Vaporization N1 - Accession Number: 13864348; Lin, Lanchao 1 Ponnappan, Rengasamy 2 Kenning, D. B. R.; Affiliation: 1: Universal Energy Systems, Inc., 4401 Dayton-Xenia Road Dayton, OH 45432-1894 2: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7251; Source Info: Jun2004, Vol. 126 Issue 3, p482; Subject Term: NOZZLES; Subject Term: FLUID mechanics; Subject Term: HEAT transfer; Subject Term: METHANOL; Subject Term: COPPER; Author-Supplied Keyword: Boiling; Author-Supplied Keyword: Cooling; Author-Supplied Keyword: Heat Transfer; Author-Supplied Keyword: Sprays; Author-Supplied Keyword: Two-Phase; Author-Supplied Keyword: Vaporization; NAICS/Industry Codes: 331420 Copper Rolling, Drawing, Extruding, and Alloying; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 326199 All Other Plastics Product Manufacturing; NAICS/Industry Codes: 326198 All other plastic product manufacturing; Number of Pages: 4p; Illustrations: 2 Diagrams, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1115/1.1738418 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13864348&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Gibbs, John P. AU - Narayanan, Latha AU - Mattie, David R. T1 - Letters to the Editor. JO - Journal of Occupational & Environmental Medicine JF - Journal of Occupational & Environmental Medicine Y1 - 2004/06// VL - 46 IS - 6 M3 - Letter SP - 516 EP - 517 SN - 10762752 AB - Presents a letter to the editor of the periodical concerning the article by Crump et.al. on the development of a laboratory assay for perchlorate. KW - LETTERS to the editor KW - MICROBIOLOGICAL assay N1 - Accession Number: 13671344; Gibbs, John P. 1 Narayanan, Latha 2 Mattie, David R. 3; Affiliation: 1: Kerr-McGee Corporation 2: Geo-Centers, Inc., Wright-Patterson AFB, OH 3: Air Force Research Laboratory (AFRL/HEPB), Wright-Patterson AFB, OH; Source Info: Jun2004, Vol. 46 Issue 6, p516; Subject Term: LETTERS to the editor; Subject Term: MICROBIOLOGICAL assay; Number of Pages: 2p; Illustrations: 2 Graphs; Document Type: Letter L3 - 10.1097/01.jom.0000128149.00111.42 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13671344&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Neiberg, Michael T1 - Which People's War? National Identity and Citizenship in Wartime Britain, 1939-1945 (Book). JO - Journal of Social History JF - Journal of Social History Y1 - 2004///Summer2004 VL - 37 IS - 4 M3 - Book Review SP - 1121 EP - 1123 PB - Oxford University Press / USA SN - 00224529 AB - Reviews the book "Which People's War? National Identity and Citizenship in Wartime Britain, 1939-1945," by Sonya O. Rose. KW - BRITISH national characteristics KW - NONFICTION KW - REVIEWS KW - ROSE, Sonya O. KW - WHICH People's War? (Book) N1 - Accession Number: 13579124; Neiberg, Michael 1; Affiliation: 1: United States Air Force Academy; Source Info: Summer2004, Vol. 37 Issue 4, p1121; Subject Term: BRITISH national characteristics; Subject Term: NONFICTION; Subject Term: REVIEWS; Reviews & Products: WHICH People's War? (Book); People: ROSE, Sonya O.; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13579124&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hay, R. S. T1 - Climb-Dissociated Dislocations in Monazite at Low Temperatures. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2004/06// VL - 87 IS - 6 M3 - Article SP - 1149 EP - 1152 PB - Wiley-Blackwell SN - 00027820 AB - Three types of climb-dissociated partial dislocations were observed by high-resolution transmission electron microscopy in monazite (LAPO4) that was indented at room temperature. Two types were found on twin boundaries, and a third in the lattice. Formation mechanisms are discussed. Glide of climb-dissociated partial dislocations that is allowed by stacking fault migration is considered. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISLOCATIONS in metals KW - MONAZITE KW - THORIUM ores KW - TRANSMISSION electron microscopy KW - ELECTRON microscopy KW - GLIDE (Crystallography) N1 - Accession Number: 13487776; Hay, R. S. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Ohio; Source Info: Jun2004, Vol. 87 Issue 6, p1149; Subject Term: DISLOCATIONS in metals; Subject Term: MONAZITE; Subject Term: THORIUM ores; Subject Term: TRANSMISSION electron microscopy; Subject Term: ELECTRON microscopy; Subject Term: GLIDE (Crystallography); NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13487776&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jennings, John M. T1 - Opium Regimes: China, Britain, and Japan, 1839--1952 (Book). JO - Journal of World History JF - Journal of World History Y1 - 2004/06// VL - 15 IS - 2 M3 - Book Review SP - 269 EP - 271 PB - University of Hawaii Press SN - 10456007 AB - Reviews the book "Opium Regimes: China, Britain, and Japan, 1839-1952," edited by Timothy Brook and Bob Tadashi Wakabayashi. KW - WORLD history KW - NONFICTION KW - WAKABAYASHI, Bob Tadashi KW - OPIUM Regimes (Book) N1 - Accession Number: 13283072; Jennings, John M. 1; Affiliation: 1: United States Air Force Academy; Source Info: Jun2004, Vol. 15 Issue 2, p269; Subject Term: WORLD history; Subject Term: NONFICTION; Reviews & Products: OPIUM Regimes (Book); People: WAKABAYASHI, Bob Tadashi; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13283072&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jones, J.G. AU - Voevodin, A.A. T1 - Magnetron sputter pulsed laser deposition: technique and process control developments JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2004/06// VL - 184 IS - 1 M3 - Article SP - 1 EP - 5 SN - 02578972 AB - This paper investigates the use of process control in the deposition of nanocomposite thin-films by the magnetron-sputtering/pulsed laser deposition (MSPLD) method. A series of YSZ/Au films was deposited with closed loop feedback control, based on plume emissions, used to update both the laser and magnetron power settings simultaneously to regulate the plume emissions for extended durations. Intensity measurements of zirconium component of the laser ablation plume were made using a narrow band filter in conjunction with a high-speed photomultiplier tube and a digital phosphorous oscilloscope. Intensity measurements of the magnetron Au plasma were made using a monochromater and a high-speed data acquisition card. Using a computer to capture these two measurements every 5 s, setpoint updates were made to both the laser and magnetron in order to maintain the stoichiometry of the thin-film being deposited. X-Ray photoelectron spectroscopy was used to verify the composition of these films grown with and without process control. The use of process control resulted in the film composition being constant throughout the depth of the thin-film, as opposed to having a graded composition due to process drift. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETRONS KW - PULSED laser deposition KW - COATING processes KW - ELECTRIC oscillators KW - Gold KW - Magnetron KW - Pulsed laser deposition (PLD) KW - Zirconium N1 - Accession Number: 13290865; Jones, J.G.; Email Address: john.jones@wpafb.af.mil Voevodin, A.A. 1; Affiliation: 1: Department of the Air Force, Air Force Research Laboratory, Materials Directorate, AFRL/MLMT, 2977 P.St. Suite 13, Blg. 653, Room 14, Wright-Patterson AFB, OH 45433-7746, USA; Source Info: Jun2004, Vol. 184 Issue 1, p1; Subject Term: MAGNETRONS; Subject Term: PULSED laser deposition; Subject Term: COATING processes; Subject Term: ELECTRIC oscillators; Author-Supplied Keyword: Gold; Author-Supplied Keyword: Magnetron; Author-Supplied Keyword: Pulsed laser deposition (PLD); Author-Supplied Keyword: Zirconium; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.surfcoat.2003.10.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13290865&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vij, Ashwani AU - Wilson, William W. AU - Vij, Vandana AU - Corley, Robert C. AU - Tham, Fook S. AU - Gerken, Michael AU - Haiges, Ralf AU - Schneider, Stefan AU - Schroer, Thorsten AU - Wagner, Ross I. T1 - Methyl Tin(IV) Derivatives of HOTeF5 and HN(SO2CF3)2: A Solution Multinuclear NMR Study and the X-ray Crystal Structures of (CH3)2)SnCI(OTeF5) and [CH3)3Sn(H2O)2][N(SO2CF3]. JO - Inorganic Chemistry JF - Inorganic Chemistry Y1 - 2004/05/17/ VL - 43 IS - 10 M3 - Article SP - 3189 EP - 3199 SN - 00201669 AB - The new tin(IV) species (CH3)2SnCI(OTeF5) was prepared via either the solvolysis of (CH3)3SnCI in HOTeF5 or the reaction of (CH3)3SnCI with CIOTeF5. It was characterized by NMR and vibrational spectroscopy, mass spectrometry, and single crystal X-ray diffraction. (CH3)2SnCI(OTeF5) crystallizes in the monoclinic space group P21/n(a = 5.8204-(8) Å, b =10.782(1) Å, c =15.493(2) Å β = 91.958(2)°, V = 971.7(2) Å3, Z = 4). NMR spectroscopy of (CH3)3-SnX, prepared from excess Sn(CH3)4 and HX (X = OTeF5 or N(SO2CF3)2), revealed a tetracoordinate tin environment using (CH3)3SnX as a neat liquid or in dichloromethane-d2(CD2CI2) solutions. In acetone-de and acetonitrile-d3(CD3CN) solutions, the tin atom in (CH3)3SnOTeF5 was found to extend its coordination number to five by adding one solvent molecule. In the strong donor solvent DMSO, the Sn—OTeF5 bond is broken and the (CH3)3Sn(O= S(CH3)2)2+ cation and the OTeF5‾ anion are formed. (CH3)3SnOTeF5 and (CH3)3SnN(SO2CF3)2 react differently with water. While the Te—F bonds in the OTeF5 group of (CH3)3SnOTeF5 undergo complete hydrolysis that results in the formation of [(CH3)3Sn(H2O)2]2SiF6, (CH3)3SnN(SO2CF3)2 forms the stable hydrate salt [(CH3)3Sn(H2O)2][N(SO2-CF3)2]. This salt crystallizes in the monoclinic space group P21/c (a = 7.3072(1) Å b =13.4649(2) Å c =16.821- (2) Å, β = 98.705(1)°, V = 1636.00(3) Å3, Z = 4) and was also characterized by NMR and vibrational spectroscopy. [ABSTRACT FROM AUTHOR] AB - Copyright of Inorganic Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLVOLYSIS KW - SOLUTION (Chemistry) KW - TIN KW - METHYL groups KW - HYDROCARBONS KW - SOLVENTS N1 - Accession Number: 13281715; Vij, Ashwani 1; Email Address: ashwani.vij@edwards.af.mil Wilson, William W. 1 Vij, Vandana 1 Corley, Robert C. 1 Tham, Fook S. 2 Gerken, Michael 3 Haiges, Ralf 3 Schneider, Stefan 3 Schroer, Thorsten 3 Wagner, Ross I. 3; Affiliation: 1: Air Force Research Laboratory/PRSP and ERC Incorporated, Space and Missile Propulsion Division, Edwards Air Force Base, California 93524 2: Department of Chemistry, University of California, Riverside, California 92521 3: Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, California 90089; Source Info: 5/17/2004, Vol. 43 Issue 10, p3189; Subject Term: SOLVOLYSIS; Subject Term: SOLUTION (Chemistry); Subject Term: TIN; Subject Term: METHYL groups; Subject Term: HYDROCARBONS; Subject Term: SOLVENTS; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 11p; Illustrations: 5 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13281715&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hazu, K. AU - Torii, K. AU - Sota, T. AU - Adachi, S. AU - Chichibu, S.F. AU - Cantwell, G. AU - Reynolds, D.C. AU - Litton, C.W. T1 - Impact of the k-linear term on nonlinear optical response of the C-exciton manifold in ZnO. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/05/15/ VL - 95 IS - 10 M3 - Article SP - 5498 EP - 5501 PB - American Institute of Physics SN - 00218979 AB - Time-integrated and spectrally resolved four-wave mixing (FWM) has been applied to study the impact of the k-linear term on nonlinear optical response of the C-exciton manifold in ZnO. From the excitation wavelength dependence of the FWM signal, we have found possible evidence that the mixing of theΓ 1 anΓ 5L states leads to a three-branch excitonic polariton dispersion but the oscillator strength transfer is small. The energy separation between the lower polariton branch and the extra branch due to the k-linear term has been found to be 3.5 meV. In addition, a binding energy of biexcitons consisting of two C excitons of 1.4 meV has been obtained. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide KW - NONLINEAR optics KW - EXCITON theory KW - POLARITONS KW - DISPERSION KW - ELECTRIC oscillators N1 - Accession Number: 13029363; Hazu, K. 1; Email Address: kouji@moegi.waseda.jp Torii, K. 1,2 Sota, T. 1,3; Email Address: tkyksota@waseda.jp Adachi, S. 4,5 Chichibu, S.F. 6,7 Cantwell, G. 8 Reynolds, D.C. 9 Litton, C.W. 9; Affiliation: 1: Department of Electrical, Electronics, and Computer Engineering, Waseda University, Japan 2: Institute of Industrial Science, University of Tokyo, Japan 3: Integrative Bioscience and Biomedical Engineering, Graduate School of Science and Engineering, Waseda University, Japan 4: Department of Applied Physics, Hokkaido University, Japan 5: CREST, Japan Science and Technology Agency 6: Institute of Applied Physics, Graduate School of Pure and Applied Sciences, University of Tsukuba, Japan 7: NICP, ERATO, Japan Science and Technology Agency (JST), Japan, Photodynamics Research Center, RIKEN (Institute of Physical and Chemical Research), Japan 8: Director of Research Zn-Technology, Inc., California 9: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio; Source Info: 5/15/2004, Vol. 95 Issue 10, p5498; Subject Term: ZINC oxide; Subject Term: NONLINEAR optics; Subject Term: EXCITON theory; Subject Term: POLARITONS; Subject Term: DISPERSION; Subject Term: ELECTRIC oscillators; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 4p; Illustrations: 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.1710727 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13029363&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Satpathy, S. AU - Popovic, Z.S. AU - Mitchel, W.C. T1 - Theory of the composition dependence of the band offset and sheet carrier density in the GaN/AlxGa1-xN heterostructure. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/05/15/ VL - 95 IS - 10 M3 - Article SP - 5597 EP - 5601 PB - American Institute of Physics SN - 00218979 AB - We present a systematic study of the sheet carrier density and valence-band offset in the GaN/Al x Ga 1-x N (0001) heterostructure as a function of x from ab initio density-functional methods. We find that the calculated sheet carrier density increases rapidly with x for x≤ 0.3 in good agreement with experiments, but beyond this concentration, it quickly saturates to a value of about 2× 10 13 cm-2. The band offset shows a small asymmetry between the Ga-face and N-face interfaces and changes more or less linearly with x, although a small bowing is found. The layer-projected densities of states indicate the formation of the two-dimensional electron gas at the Ga-face interface and confirm the absence of interface states in the gap. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HETEROSTRUCTURES KW - GALLIUM nitride KW - ALUMINUM nitride KW - DENSITY functionals KW - ELECTRON gas KW - PHYSICS N1 - Accession Number: 13029352; Satpathy, S. 1,2 Popovic, Z.S. 1,3 Mitchel, W.C. 2; Affiliation: 1: Department of Physics, University of Missouri, Columbia, Missouri 65211 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433 3: Institute for Nuclear Sciences-"Vinca", PO Box; 522, 11001 Belgrade, Yugoslavia; Source Info: 5/15/2004, Vol. 95 Issue 10, p5597; Subject Term: HETEROSTRUCTURES; Subject Term: GALLIUM nitride; Subject Term: ALUMINUM nitride; Subject Term: DENSITY functionals; Subject Term: ELECTRON gas; Subject Term: PHYSICS; Number of Pages: 5p; Illustrations: 1 Diagram, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1063/1.1704869 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13029352&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Spowart, J.E. AU - Miracle, D.B. AU - Mullens, H.M. T1 - The influence of solute distribution on the high nucleation density of Al crystals in amorphous aluminum alloys JO - Journal of Non-Crystalline Solids JF - Journal of Non-Crystalline Solids Y1 - 2004/05/15/ VL - 336 IS - 3 M3 - Article SP - 202 SN - 00223093 AB - An extension of a previous model that describes the role of solute atoms on glass formability leads to the conclusion that solute distribution plays an important role in the formation and stability of amorphous metals. A random distribution of solutes is shown to produce local solute-depleted regions (on the size scale of the mean inter-solute spacing) that provide preferred sites for the formation of crystalline nuclei. The possibility that these solute-depleted regions are responsible for the exceptionally high number density of critical Al nuclei is explored for three Al–Y binary alloys using a computer simulation. Up to 107 Y atoms were placed at random locations in the system, and the number of solute-free regions were counted as a function of the size of these regions. The experimentally observed number density of critical nuclei (∼3 × 1021 m−3) is reproduced for a critical nucleus about 5 Al atoms in diameter, containing ∼60 Al atoms in an fcc array. Good agreement with previous suggestions of the size of a critical nucleus (about 6 atoms in diameter, containing about 100 atoms) support the conclusion that the current model provides a reasonable physical explanation for the quenched-in features responsible for the exceptionally high nucleation density in some amorphous Al alloys. [Copyright &y& Elsevier] AB - Copyright of Journal of Non-Crystalline Solids is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - 61.43.Bn N1 - Accession Number: 12778319; Spowart, J.E. 1,2; Email Address: jonathan.spowart@wpafb.af.mil Miracle, D.B. 2 Mullens, H.M. 3; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright–Patterson AFB, OH 45433, USA 3: SOCHE, 3171 Research Blvd, Suite 141, Dayton, OH 45420, USA; Source Info: May2004, Vol. 336 Issue 3, p202; Author-Supplied Keyword: 61.43.Bn; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.jnoncrysol.2004.02.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12778319&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tiley, J. AU - Searles, T. AU - Lee, E. AU - Kar, S. AU - Banerjee, R. AU - Russ, J.C. AU - Fraser, H.L. T1 - Quantification of microstructural features in α/β titanium alloys JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2004/05/15/ VL - 372 IS - 1/2 M3 - Article SP - 191 SN - 09215093 AB - Mechanical properties of α/β Ti alloys are closely related to their microstructure. The complexity of the microstructural features involved makes it rather difficult to develop models for predicting properties of these alloys. Developing predictive rules-based models for α/β Ti alloys requires a huge database consisting of quantified microstructural data. This in turn requires the development of rigorous stereological procedures capable of quantifying the various microstructural features of interest imaged using optical and scanning electron microscopy (SEM) micrographs. In the present paper, rigorous stereological procedures have been developed for quantifying four important microstructural features in these alloys: thickness of Widmansta¨tten α laths, colony scale factor, prior β grain size, and volume fraction of Widmansta¨tten α laths. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - PREDICATE calculus KW - MICROSTRUCTURE KW - METALS -- Mechanical properties KW - Microstructure KW - Quantification KW - Stereology KW - Titanium alloys N1 - Accession Number: 12897804; Tiley, J. 1 Searles, T. 2 Lee, E. 2 Kar, S. 2 Banerjee, R. 2; Email Address: banerjee.8@osu.edu Russ, J.C. 3 Fraser, H.L. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Dayton, OH, USA 2: Department of Materials Science and Engineering, Center for the Accelerated Maturation of Materials, The Ohio State University, 2041 College Road, Columbus, OH 43210, USA 3: North Carolina State University, Raleigh, NC, USA; Source Info: May2004, Vol. 372 Issue 1/2, p191; Subject Term: TITANIUM alloys; Subject Term: PREDICATE calculus; Subject Term: MICROSTRUCTURE; Subject Term: METALS -- Mechanical properties; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Quantification; Author-Supplied Keyword: Stereology; Author-Supplied Keyword: Titanium alloys; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.msea.2003.12.008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12897804&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sun, Gregory AU - Soref, Richard A. AU - Khurgin, Jacob B. T1 - Reduced threshold current of a quantum dot laser in a short period superlattice of indirect-band gap. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/05/10/ VL - 84 IS - 19 M3 - Article SP - 3861 EP - 3863 PB - American Institute of Physics SN - 00036951 AB - We propose the idea of making quantum dot lasers by embedding direct-band gap quantum dots in a short period superlattice whose band gap is indirect. This technique reduces the threshold current and its temperature dependence. We show that a higher characteristic-temperature T0 can be achieved in a quantum dot laser with indirect GaAs/AlAs superlattice barriers compared to that with direct GaAs barriers. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM dots KW - LASERS KW - SEMICONDUCTORS KW - QUANTUM electronics KW - SUPERLATTICES KW - GALLIUM arsenide KW - QUANTUM wells N1 - Accession Number: 13029136; Sun, Gregory 1; Email Address: greg.sun@umb.edu Soref, Richard A. 2 Khurgin, Jacob B. 3; Affiliation: 1: Department of Physics, University of Massachusetts at Boston, Massachusetts 2: Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 3: Department of Electrical and Computer Engineering, The Johns Hopkins University, Baltimore, Maryland; Source Info: 5/10/2004, Vol. 84 Issue 19, p3861; Subject Term: QUANTUM dots; Subject Term: LASERS; Subject Term: SEMICONDUCTORS; Subject Term: QUANTUM electronics; Subject Term: SUPERLATTICES; Subject Term: GALLIUM arsenide; Subject Term: QUANTUM wells; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.1751606 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13029136&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zarkoob, Shahrzad AU - Eby, R.K. AU - Reneker, Darrell H. AU - Hudson, Steven D. AU - Ertley, Dale AU - Adams, Wade W. T1 - Structure and morphology of electrospun silk nanofibers JO - Polymer JF - Polymer Y1 - 2004/05/08/ VL - 45 IS - 11 M3 - Article SP - 3973 EP - 3977 SN - 00323861 AB - Nanoscale fibers of natural silks of Bombyx mori and Nephila clavipes were produced from solutions in hexafluoro-2-propanol. The electrospun fibers were observed by optical, scanning electron, and transmission electron microscopy. These nanofibers showed optical retardation, appeared to have a circular cross-section, and were thermally stable under nitrogen to 280 °C (N. clavipes) and to 245 °C (B. mori). The diameter of the fibers ranged from approximately 6.5–200 nm making them orders of magnitudes smaller than the natural silks spun by most silkworms and spiders. The smallest fiber diameters correspond to 200 molecules in the cross section of the N. clavipes fibers and 150 in B. mori. Electron diffraction patterns of annealed electrospun fibers of B. mori and N. clavipes exhibit diffraction peaks demonstrating orientational and crystalline order comparable to that of naturally spun silks. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILK KW - SILKWORMS KW - NEPHILA KW - TRANSMISSION electron microscopy KW - ELECTRON microscopy KW - ELECTRON diffraction KW - B. mori KW - Electrospinning KW - N. clavipes N1 - Accession Number: 13429691; Zarkoob, Shahrzad 1 Eby, R.K. 1; Email Address: reby@uakron.edu Reneker, Darrell H. 1 Hudson, Steven D. 2 Ertley, Dale 1 Adams, Wade W. 3; Affiliation: 1: Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA 2: Department of Macromolecular Science, Case Western Reserve University, Cleveland, OH 44106, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, Dayton, OH 45433-7734, USA; Source Info: May2004, Vol. 45 Issue 11, p3973; Subject Term: SILK; Subject Term: SILKWORMS; Subject Term: NEPHILA; Subject Term: TRANSMISSION electron microscopy; Subject Term: ELECTRON microscopy; Subject Term: ELECTRON diffraction; Author-Supplied Keyword: B. mori; Author-Supplied Keyword: Electrospinning; Author-Supplied Keyword: N. clavipes; NAICS/Industry Codes: 313110 Fiber, Yarn, and Thread Mills; NAICS/Industry Codes: 112999 All other miscellaneous animal production; NAICS/Industry Codes: 313210 Broadwoven Fabric Mills; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.polymer.2003.10.102 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13429691&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dichtel, William R. AU - Serin, Jason M. AU - Edder, Carine AU - Fréchet, Jean M. J. AU - Matuszewski, Michael AU - Tan, Loon-Seng AU - Ohulchanskyy, Tymish Y. AU - Prasad, Paras N. T1 - Singlet Oxygen Generation via Two-Photon Excited FRET. JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2004/05/05/ VL - 126 IS - 17 M3 - Article SP - 5380 EP - 5381 SN - 00027863 AB - This article presents a study on singlet oxygen generation via two-photon excited flourescence resonance energy transfer. Among many possible applications, compounds capable of generating singlet oxygen following efficient two-photon absorption (TPA) could broaden the applicability of singlet oxygen generation. Porphyrin sensitizers have low TPA cross sections, limiting their usefulness in two-photon absorption applications. This limitation has stimulated interest in the discovery of porphyrins with enhanced TPA cross sections through chemical modification of the porphyrin chromophore. KW - PORPHYRINS KW - MACROCYCLIC compounds KW - PHOTONS KW - OXYGEN KW - ENERGY transfer KW - RESONANCE N1 - Accession Number: 13229485; Dichtel, William R. 1 Serin, Jason M. 1 Edder, Carine 1 Fréchet, Jean M. J. 1; Email Address: frechet@cchem.berkeley.edu Matuszewski, Michael 2 Tan, Loon-Seng 2 Ohulchanskyy, Tymish Y. 3 Prasad, Paras N. 3; Affiliation: 1: Department of Chemistry, University of California, Berkeley, California 94720-1460. 2: Institute for Lasers, Photonics and Biophotonics and Department of Chemistry, State University of New York, Buffalo, New York 14260-3000. 3: Polymer Branch, Air Force Research Laboratory/MLBP, 2941 P Street, Suite 136, Area B, Building 654, Wright-Patterson AFB, Ohio 45433-7750.; Source Info: 5/5/2004, Vol. 126 Issue 17, p5380; Subject Term: PORPHYRINS; Subject Term: MACROCYCLIC compounds; Subject Term: PHOTONS; Subject Term: OXYGEN; Subject Term: ENERGY transfer; Subject Term: RESONANCE; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13229485&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cellino, A. AU - Price, S. T1 - Preface JO - Advances in Space Research JF - Advances in Space Research Y1 - 2004/05// VL - 33 IS - 9 M3 - Article SP - 1513 EP - 1513 SN - 02731177 N1 - Accession Number: 13429596; Cellino, A. 1; Email Address: cellino@to.astro.it Price, S. 2; Affiliation: 1: Osservatorio Astronomico di Torino, Strada dell’ Osservatorio 20, Pino Torinese 10025, Italy 2: Air Force Research Laboratory (VSBC), 29 Randolph Road, Hanscom AFB, MA 01731, USA; Source Info: May2004, Vol. 33 Issue 9, p1513; Number of Pages: 1p; Document Type: Article L3 - 10.1016/S0273-1177(03)00450-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13429596&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Price, Stephan D. T1 - The surface properties of asteroids JO - Advances in Space Research JF - Advances in Space Research Y1 - 2004/05// VL - 33 IS - 9 M3 - Article SP - 1548 EP - 1557 SN - 02731177 AB - The physical characteristics of asteroid surfaces are best defined by direct measurements, few of which currently exist. Thus, inferences from indirect observations must be made. From the limited visible and radar imagery heavy cratering marks the asteroid surfaces and the surfaces are rough at all scales. For those asteroids with both a size and mass determination, only the largest bodies have bulk densities close to those expected from their meteoritic analogs. The smaller asteroids have large-scale porosities of 20% and greater; the objects with highest macroporosity are likely to be rubble piles while the denser ones may be heavily fractured coherent objects. The regoliths on the larger asteroids appear to be at least centimeters deep, while infrared measurements on the smaller objects argue for either a much thinner regolith or a bare surface; although direct imagery on the modest sized near-Earth asteroid 433 Eros indicates a regolith that is meters deep. Visual and infrared spectra clearly show that the silicates olivine and pyroxene are present on many asteroids and indicate the spectral signature of hydrated minerals in several low Albedo asteroids. Disk integrated photometry and radiometry provide clues as to the surface porosity and roughness and the fraction of surface covered by craters. Microwave, radio and radar measurements can penetrate the surface regolith, yielding information on the particle size distribution, and the nature of the underlying material. Modeling of the radiative transfer within the surface and deeper layers of an asteroid is required to accurately interpret these disk integrated measurements in terms of realistic physical parameters. Although the modeling has become sophisticated, additional components as well as more extensive and accurate measurements are required to derive an unambiguous picture of the asteroid surface layers from the indirect observations. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMPACT of asteroids with Earth KW - EARTH (Planet) KW - SOLAR system KW - ASTRONOMY KW - CRUST KW - Asteroids KW - Mineralogy KW - Regolith N1 - Accession Number: 13429602; Price, Stephan D. 1; Email Address: sreve.price@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory (VSBC), Space Vehicles Directorate, 29 Randolph Road, Hanscom AFB, Bedford, MA 01731, USA; Source Info: May2004, Vol. 33 Issue 9, p1548; Subject Term: IMPACT of asteroids with Earth; Subject Term: EARTH (Planet); Subject Term: SOLAR system; Subject Term: ASTRONOMY; Subject Term: CRUST; Author-Supplied Keyword: Asteroids; Author-Supplied Keyword: Mineralogy; Author-Supplied Keyword: Regolith; Number of Pages: 10p; Document Type: Article L3 - 10.1016/S0273-1177(03)00453-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13429602&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Burke, S. A. AU - Wright, J. D. AU - Robinson, M. K. AU - Bronk, B. V. AU - Warren, R. L. T1 - Detection of Molecular Diversity in Bacillus atrophaeus by Amplified Fragment Length Polymorphism Analysis. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2004/05// VL - 70 IS - 5 M3 - Article SP - 2786 EP - 2790 SN - 00992240 AB - Phenotypically, Bacillus atrophaeus is indistinguishable from the type strain of Bacillus subtilis except by virtue of pigment production on certain media. Several pigmented variants of B. subtilis have been reclassified as B. atrophaeus, but several remain ambiguous in regard to their taxonomic placement. In this study, we examined strains within the American Type Culture Collection originally deposited as Bacillus globigii, B. subtilis var. niger, or Bacillus niger using 16S rRNA gene sequencing and amplified fragment length polymorphism (AFLP) analysis to determine the level of molecular diversity among these strains and their relationship with closely related taxa. The 16S rRNA gene sequences revealed little variation with one base substitution between the B. atrophaeus type strain ATCC 49337 and the other pigmented bacilli. AFLP analysis produced high-quality DNA fingerprints with sufficient polymorphism to reveal strain-level variation. Cluster analysis of Dice similarity coefficients revealed that three strains, ATCC 31028, ATCC 49760, and ATCC 49822, are much more closely related to B. atrophaeus than to B. subtilis and should be reclassified as B. atrophaeus. A very closely related cluster of B. atrophaeus strains was also observed; this cluster was genetically distinct from the type strain. The level of variation between the two groups was approximately the same as the level of variation observed between members of the two B. subtilis subspecies, subtilis and spizizenii. It is proposed that the cluster of strains typified by ATCC 9372 be designated a new subspecies, B. atrophaeus subsp, globigii. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BACILLUS (Bacteria) KW - GENETIC polymorphisms KW - SUBTILISINS KW - BIOLOGICAL pigments KW - BIOLOGY -- Classification KW - GENES N1 - Accession Number: 13273925; Burke, S. A. 1; Email Address: burkes@battelle.org Wright, J. D. 2 Robinson, M. K. 1 Bronk, B. V. 3 Warren, R. L. 1; Affiliation: 1: Battelle Dugway Operations, Dugway, Utah 84022 2: U.S. Army Dugway Proving Ground, Dugway, Utah 84022 3: Air Force Research Laboratory, U.S. Army Soldier and Biological Chemical Command, Aberdeen Proving Ground, Maryland 21010-5424; Source Info: May2004, Vol. 70 Issue 5, p2786; Subject Term: BACILLUS (Bacteria); Subject Term: GENETIC polymorphisms; Subject Term: SUBTILISINS; Subject Term: BIOLOGICAL pigments; Subject Term: BIOLOGY -- Classification; Subject Term: GENES; Number of Pages: 5p; Illustrations: 1 Chart; Document Type: Article L3 - 10.1128/AEM.70.5.2786-2790.2004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13273925&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gorla, Rama Subba Reddy AU - Gatica, Jorge E. AU - Ghorashi, Bahman AU - Ineure, Pijarn AU - Byrd, Larry W. T1 - HEAT TRANSFER IN A THIN LIQUID FILM IN THE PRESENCE OF AN ELECTRIC FIELD. JO - Chemical Engineering Communications JF - Chemical Engineering Communications Y1 - 2004/05// VL - 191 IS - 5 M3 - Article SP - 718 EP - 731 PB - Taylor & Francis Ltd SN - 00986445 AB - Heat transfer enhancement in an evaporating thin liquid film utilizing a electric field under isothermal interfacial condition is presented. A new mathematical model subjected to van der Waals attractive forces, capillary pressure, and an electric field is developed to describe the heat transfer enhancement in the evaporating thin liquid film. The effect of the electrostatic field on the curvature of the thin film, evaporative flux, pressure gradient distribution, heat flux, and heat transfer coefficient in the thin film is presented. The results show that applying an electric field can enhance heat transfer in a thin liquid film significantly. in addition, utilizing electric fields on the evaporating film will be a way to expand the extended meniscus region to attain high heat transfer coefficients and high rates of heat flux. [ABSTRACT FROM AUTHOR] AB - Copyright of Chemical Engineering Communications is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT transfer KW - THIN films KW - FILM boiling KW - EVAPORATION (Chemistry) KW - ELECTRIC fields KW - ENERGY transfer KW - PRESSURE KW - CAPILLARY electrophoresis KW - Capillary action KW - Disjoining pressure KW - Electric field KW - Evaporating films KW - Heat transfer N1 - Accession Number: 12887289; Gorla, Rama Subba Reddy 1; Email Address: r.gorla@csuohio.edu Gatica, Jorge E. 2 Ghorashi, Bahman 2 Ineure, Pijarn 2 Byrd, Larry W. 3; Affiliation: 1: Department of Mechanical Engineering, Cleveland State University, Cleveland, Ohio, USA 2: Department of Chemical Engineering, Cleveland State University, Cleveland, Ohio, USA 3: Thermal Structures Branch, Air Vehicles Directorate, Air Force Research Laboratory,Wright Patterson Air Force Base, Ohio, USA; Source Info: May2004, Vol. 191 Issue 5, p718; Subject Term: HEAT transfer; Subject Term: THIN films; Subject Term: FILM boiling; Subject Term: EVAPORATION (Chemistry); Subject Term: ELECTRIC fields; Subject Term: ENERGY transfer; Subject Term: PRESSURE; Subject Term: CAPILLARY electrophoresis; Author-Supplied Keyword: Capillary action; Author-Supplied Keyword: Disjoining pressure; Author-Supplied Keyword: Electric field; Author-Supplied Keyword: Evaporating films; Author-Supplied Keyword: Heat transfer; Number of Pages: 14p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12887289&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rangaswamy, Muralidhar AU - Michels, James H. AU - Himed, Braham T1 - Statistical analysis of the non-homogeneity detector for STAP applications JO - Digital Signal Processing JF - Digital Signal Processing Y1 - 2004/05// VL - 14 IS - 3 M3 - Article SP - 253 SN - 10512004 AB - We present a statistical analysis of the recently proposed non-homogeneity detector (NHD) for Gaussian interference statistics. Specifically, we show that a formal goodness-of-fit test can be constructed by accounting for the statistics of the generalized inner product (GIP) used as the NHD test statistic. The normalized-GIP follows a central-F distribution and admits a canonical representation in terms of two statistically independent chi-squared distributed random variables. Moments of the GIP can be readily calculated as a result. These facts are used to derive the goodness-of-fit tests, which facilitate intelligent training data selection. We then address the issue of space–time adaptive processing (STAP) algorithm performance using the NHD as a pre-processing step for training data selection. Performance of the adaptive matched filter (AMF) method is reported using simulated as well as measured data. [Copyright &y& Elsevier] AB - Copyright of Digital Signal Processing is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - CLUSTER analysis (Statistics) KW - STATISTICAL hypothesis testing KW - MATHEMATICAL statistics KW - AMF KW - Detection probability KW - F-distribution KW - False alarm probability KW - GIP KW - Goodness-of-fit test KW - Non-homogeneity detector KW - Signal-to-noise-ratio (SNR) KW - STAP N1 - Accession Number: 12984038; Rangaswamy, Muralidhar 1; Email Address: muralidhar.rangaswamy@hanscom.af.mil Michels, James H. 2; Email Address: james.michels@rl.af.mil Himed, Braham 2; Affiliation: 1: Air Force Research Laboratory/SNHE, 80 Scott Drive, Hanscom Air Force Base, MA 01731-2909, USA 2: Air Force Research Laboratory/SNRT, 26 Electronic Parkway, Rome, NY 13441-4514, USA; Source Info: May2004, Vol. 14 Issue 3, p253; Subject Term: ALGORITHMS; Subject Term: CLUSTER analysis (Statistics); Subject Term: STATISTICAL hypothesis testing; Subject Term: MATHEMATICAL statistics; Author-Supplied Keyword: AMF; Author-Supplied Keyword: Detection probability; Author-Supplied Keyword: F-distribution; Author-Supplied Keyword: False alarm probability; Author-Supplied Keyword: GIP; Author-Supplied Keyword: Goodness-of-fit test; Author-Supplied Keyword: Non-homogeneity detector; Author-Supplied Keyword: Signal-to-noise-ratio (SNR); Author-Supplied Keyword: STAP; Number of Pages: 15p; Document Type: Article L3 - 10.1016/S1051-2004(03)00021-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12984038&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sanford, G. E. AU - Welsh, J. S. T1 - EELV SECONDARY PAYLOAD ADAPTER (ESPA) STATIC QUALIFICATION TESTS, PART 3 OF 4. JO - Experimental Techniques JF - Experimental Techniques Y1 - 2004/05//May/Jun2004 VL - 28 IS - 3 M3 - Article SP - 56 EP - 58 SN - 07328818 AB - Discusses the static qualification tests for the EELV Secondary Payload (ESPA) Adapter. Description of the ESPA test objectives; Advantage of the primary payload's unused volume and mass margins. KW - TESTING KW - STATICS KW - RELIABILITY (Engineering) KW - ENGINEERING KW - ANALYTICAL mechanics N1 - Accession Number: 13467812; Sanford, G. E. 1 Welsh, J. S. 2; Affiliation: 1: CSA Engineering Inc., Albuquerque, NM 2: Air Force Research Laboratory/VSSV, Kirtland AFB, NM; Source Info: May/Jun2004, Vol. 28 Issue 3, p56; Subject Term: TESTING; Subject Term: STATICS; Subject Term: RELIABILITY (Engineering); Subject Term: ENGINEERING; Subject Term: ANALYTICAL mechanics; Number of Pages: 3p; Illustrations: 2 Black and White Photographs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13467812&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Silverman, Jerry AU - Rotman, Stanley R. AU - Caefer, Charlene E. T1 - Segmentation of multi-dimensional infrared imagery from histograms JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2004/05// VL - 45 IS - 3 M3 - Article SP - 191 SN - 13504495 AB - We present a technique for segmenting multi-dimensional data cubes based on multi-dimensional histograms. The histograms are formed from single gray-scale image reductions of the data cube such as principal component images. A segmentation is effected by associating each pixel with one of the peaks in the histogram. No spatial constraints are imposed and no training pixels are required. The following refinements to this simple process are described: proper weighting of the different principal components as a function of the peak shape; and automatic methods based on an entropy measure to generate a reasonable segmentation at a specified number of levels. Examples from both visible and infrared hyperspectral data will be shown. [Copyright &y& Elsevier] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFRARED imaging KW - INFRARED technology KW - INFRARED radiation KW - ELECTROMAGNETIC waves KW - Entropy KW - Gaussian model KW - Histograms KW - Hyperspectral KW - Principal Components KW - Segmentation N1 - Accession Number: 12652241; Silverman, Jerry 1; Email Address: jerry.silverman@hanscom.af.mil Rotman, Stanley R. 2,3 Caefer, Charlene E. 3; Affiliation: 1: Solid State Scientific Corp., 27-2 Wright Road, Hollis, NH 03049, USA 2: Department of Electrical and Computer Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva, Israel 3: Air Force Research Laboratory, AFRL/SNHI, 80 Scott Road, Hanscom Air Force Base, MA 01731, USA; Source Info: May2004, Vol. 45 Issue 3, p191; Subject Term: INFRARED imaging; Subject Term: INFRARED technology; Subject Term: INFRARED radiation; Subject Term: ELECTROMAGNETIC waves; Author-Supplied Keyword: Entropy; Author-Supplied Keyword: Gaussian model; Author-Supplied Keyword: Histograms; Author-Supplied Keyword: Hyperspectral; Author-Supplied Keyword: Principal Components; Author-Supplied Keyword: Segmentation; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.infrared.2003.08.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12652241&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, J.K. AU - Beraun, J.E. AU - Tham, C.L. T1 - Ultrafast thermoelasticity for short-pulse laser heating JO - International Journal of Engineering Science JF - International Journal of Engineering Science Y1 - 2004/05// VL - 42 IS - 8/9 M3 - Article SP - 793 SN - 00207225 AB - Thermoelastic stress waves in a solid medium caused by subpicosecond-pulse laser heating are investigated with three different approaches: ultrafast thermoelasticity, Lord–Shulman theory, and the classical thermoelasticity. Both the conditions of uniaxial strain and uniaxial stress are considered. A combined finite difference/finite element algorithm is developed for solving the coupled, nonlinear, transient differential equations. It is shown that the thermomechanical results obtained from the ultrafast thermoelasticity are significantly different from those obtained from Lord–Shulman theory and the classical thermoelasticity. The other finding is that in contrast to long pulse and continuous-wave laser heating, thermal stresses in a free-expansion medium induced by an ultrashort, uniform volumetric heat source could be pronounced. [Copyright &y& Elsevier] AB - Copyright of International Journal of Engineering Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THERMOELASTICITY KW - THERMAL stresses KW - EXPANSION of solids KW - PICOSECOND pulses KW - Generalized thermoelasticity KW - Non-thermal equilibrium KW - Stress wave KW - Ultrafast thermoelasticity KW - Ultrashort laser heating N1 - Accession Number: 12896110; Chen, J.K. Beraun, J.E. 1 Tham, C.L. 1; Affiliation: 1: Laser Effects Research Branch, Directed Energy Directorate, Air Force Research Laboratory, 3550 Aberdeen Avenue, Kirtland AFB, NM 87117, USA; Source Info: May2004, Vol. 42 Issue 8/9, p793; Subject Term: THERMOELASTICITY; Subject Term: THERMAL stresses; Subject Term: EXPANSION of solids; Subject Term: PICOSECOND pulses; Author-Supplied Keyword: Generalized thermoelasticity; Author-Supplied Keyword: Non-thermal equilibrium; Author-Supplied Keyword: Stress wave; Author-Supplied Keyword: Ultrafast thermoelasticity; Author-Supplied Keyword: Ultrashort laser heating; Number of Pages: 15p; Document Type: Article L3 - 10.1016/j.ijengsci.2003.11.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12896110&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - George, Tommy J. AU - Seidt, Jeremy AU - Herman Shen, M.-H. AU - Nicholas, Theodore AU - Cross, Charles J. T1 - Development of a novel vibration-based fatigue testing methodology JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2004/05// VL - 26 IS - 5 M3 - Article SP - 477 SN - 01421123 AB - A novel testing methodology has been developed to determine the fatigue limit strength of structural materials at high frequencies. The procedure involves the use of a base-excited plate specimen driven into a high frequency resonant mode which allows completion of a fatigue test in a few hours. The use of a step-testing method allows determination of the fatigue limit strength of the material corresponding to a very large number of cycles, 106 or 107 in this case. The methodology consists of a topological design procedure, incorporating a finite element model, to produce the shape of the specimen necessary to achieve the required stress state/pattern, and a forced vibration-based fatigue procedure for conducting the high cycle fatigue experiments with variable-amplitude loading. The successful application of the methodology is demonstrated by the experimental results from steel, 6061-T6 aluminum, and Ti-6Al-4V plate specimens subjected to fully reversed uniaxial and biaxial bending stress states. Results are compared with existing data produced using traditional fatigue test machines. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE testing machines KW - BUILDING materials KW - RESONANT vibration KW - METHODOLOGY KW - Biaxial KW - Fatigue KW - Testing KW - Vibration N1 - Accession Number: 12308185; George, Tommy J. 1 Seidt, Jeremy 1 Herman Shen, M.-H. 1; Email Address: shen.1@osu.edu Nicholas, Theodore 2 Cross, Charles J. 2; Affiliation: 1: Department of Aerospace Engineering and Aviation, The Ohio State University, Columbus, OH 43210, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: May2004, Vol. 26 Issue 5, p477; Subject Term: FATIGUE testing machines; Subject Term: BUILDING materials; Subject Term: RESONANT vibration; Subject Term: METHODOLOGY; Author-Supplied Keyword: Biaxial; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Testing; Author-Supplied Keyword: Vibration; NAICS/Industry Codes: 423390 Other Construction Material Merchant Wholesalers; NAICS/Industry Codes: 444190 Other Building Material Dealers; NAICS/Industry Codes: 416310 General-line building supplies merchant wholesalers; NAICS/Industry Codes: 416390 Other specialty-line building supplies merchant wholesalers; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijfatigue.2003.10.012 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12308185&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reich, Gregory W. AU - Raveh, Daniella E. AU - Zink, P. Scott T1 - Application of Active-Aeroelastic-Wing Technology to a Joined-Wing Sensorcraft. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2004/05//May/Jun2004 VL - 41 IS - 3 M3 - Article SP - 594 EP - 602 SN - 00218669 AB - A study was conducted to investigate the applicability of active-aeroelastic-wing technology to a joined-wing sensorcraft configuration for the purpose of minimization of embedded antenna deformations. The study was performed using a half-span aeroelastic model of a joined-wing sensorcraft design with six control surfaces. These control surfaces were used concurrently to minimize the elastic deformations at structural nodes corresponding to the antenna tip, while trimming the aircraft to a required 1-g level flight, simultaneously satisfying constraints on the allowable hinge moments and maximum control surface deflections. Comparison of antenna displacements for the optimized and baseline cases (using one control surface at a time) demonstrates that the active-aeroelastic-wing concept can be used to significantly reduce the antenna displacements, potentially improving the performance of the embedded antenna system. Aeroelastic displacements from the trim-optimized system are an order-of-magnitude smaller than those of the baseline. These results demonstrate the feasibility of active-aeroelastic-wing technology for the improvement of embedded antenna performance caused by structural deformations. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - AEROELASTICITY KW - AERODYNAMICS KW - ELASTIC waves KW - AERONAUTICS N1 - Accession Number: 13783489; Reich, Gregory W. 1,2 Raveh, Daniella E. 3,4,5 Zink, P. Scott 5,6,7; Affiliation: 1: Research Aerospace Engineer, Air Vehicles Directorate, AFRL/VASA, 2210 Eighth St., Room 219, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Senior Member, AIAA 3: Research Engineer II , Georgia Institute of Technology Atlanta, Georgia 30332 4: Senior Lecturer, Faculty of Aerospace Engineering, Technion--Israel Institute of Technology, Haifa 32000, Israel 5: Member, AIAA 6: Georgia Institute of Technology Atlanta, Georgia 30332 7: Senior Aeronautical Engineer, Lockheed Martin Aeronautics Company, P.O. Box 748, Fort Worth, TX 76101; Source Info: May/Jun2004, Vol. 41 Issue 3, p594; Subject Term: AIRPLANE wings; Subject Term: AEROELASTICITY; Subject Term: AERODYNAMICS; Subject Term: ELASTIC waves; Subject Term: AERONAUTICS; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 9p; Illustrations: 9 Diagrams, 9 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13783489&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Osborn, Russell F. AU - Kota, Sridhar AU - Hetrick, Joel A. AU - Geister, Donald E. AU - Tilmann, Carl P. AU - Jinyong Joo T1 - Active Flow Control Using High-Frequency Compliant Structures. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2004/05//May/Jun2004 VL - 41 IS - 3 M3 - Article SP - 603 EP - 609 SN - 00218669 AB - Flow control to avoid or delay boundary-layer separation on a wing can dramatically improve the performance of most air vehicles in strategic parts of their individual flight envelopes. Previous aerodynamic experiments and computations have indicated that unsteady excitation at the appropriate frequency can delay boundary-layer separation and wing stall more effectively than steady flow perturbations and that these unsteady perturbations, when generated in an optimum frequency range, maximize the extent of flow separation control for specific flight conditions. Preliminary aerodynamic experiments have been performed on a deflected trailing-edge flap to evaluate turbulent boundary layer separation control with a deployable high-frequency micro-vortex-generator (HiMVG) array. The HiMVG design tested incorporated emerging displacement amplification compliant structures technology that deployed micro-vortex-generator blades 5 mm, through a range of frequencies between 30 and 70 Hz, when driven by an appropriately sized voice-coil actuator. The mechanical HiMVG system tested produced an oscillatory stream of boundary-layer embedded vortices that proved effective in mitigating flow separation on the upper surface of a deflected flap when a similar array of static vortex generators could not. A second-generation HiMVG design driven by a piezoelectric actuator was also conceptualized. Candidate flow control applications for this second-generation design are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANES -- Flight testing KW - FLUID dynamics KW - VORTEX motion KW - FLIGHT KW - AERODYNAMICS KW - AERONAUTICS N1 - Accession Number: 13783490; Osborn, Russell F. 1,2 Kota, Sridhar 3,4 Hetrick, Joel A. 5 Geister, Donald E. 4,6 Tilmann, Carl P. 7,8 Jinyong Joo 9; Affiliation: 1: Senior Research Engineer, 2020 Hogback Road, Suite 2, FlexSys, Inc., Ann Arbor, Michigan 48114 2: Senior Member, AIAA 3: President, 2020 Hogback Road, Suite 2, FlexSys, Inc., Ann Arbor, Michigan 48114 4: Member, AIAA 5: Vice President, 2020 Hogback Road, Suite 2, FlexSys, Inc., Ann Arbor, Michigan 48114 6: Research Scientist and Lecturer, Aerospace Engineering Department, FXB Building, North Campus, Room 3032, University of Michigan, Ann Arbor, Michigan 48109-2125 7: Senior Aerospace Engineer, Air Vehicles Directorate/Aerodynamic Configuration Branch, Building 45, 2130 8th Street, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542 8: Associate Fellow, AIAA 9: Postdoctoral Fellow, Air Vehicles Directorate/Structural Design and Development Branch, Building 146, 2210 8th Street, U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542; Source Info: May/Jun2004, Vol. 41 Issue 3, p603; Subject Term: AIRPLANES -- Flight testing; Subject Term: FLUID dynamics; Subject Term: VORTEX motion; Subject Term: FLIGHT; Subject Term: AERODYNAMICS; Subject Term: AERONAUTICS; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 488190 Other Support Activities for Air Transportation; Number of Pages: 7p; Illustrations: 7 Black and White Photographs, 3 Diagrams, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13783490&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reynolds, D. C. AU - Litton, C. W. AU - Look, D. C. AU - Hoelscher, J. E. AU - Claflin, B. AU - Collins, T. C. AU - Nause, J. AU - Nemeth, B. T1 - High-quality, melt-grown ZnO single crystals. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/05//5/1/2004 VL - 95 IS - 9 M3 - Article SP - 4802 EP - 4805 PB - American Institute of Physics SN - 00218979 AB - High-quality, melt-grown ZnO crystals are reported. The reflection and emission spectra of the melt-grown samples are compared with the same spectra from high-quality, vapor-grown ZnO crystals. We isolate the reflection and emission spectra predominantly related to the intrinsic properties associated with the wurtzite structure of the crystals. The quality of the crystals is reflected in the spectral reproduction of the intrinsic properties of the crystals. Both the ground state and the n=2 state of the free excitons associated with the A, B, and C valence bands of the crystals are spectrally observed in reflection. Assuming a hydrogenic character for the free excitons, the binding energy of these excitons associated with all three valence bands was determined. For the intrinsic emission spectra, attention was focused on the A-band free excitons and related optical parameters. Both the reflection and emission spectra for the melt-grown material compared very closely with the same spectra observed from high-quality vapor-grown ZnO samples. The details of both the reflection and emission spectra verify the high-quality of the melt-grown material. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide KW - CRYSTALS KW - VAPORS KW - ELECTRON emission KW - EXCITON theory KW - TRANSPORT theory (Mathematics) N1 - Accession Number: 12855024; Reynolds, D. C. 1 Litton, C. W. 1; Email Address: cole.litton@wpafb.at.mil Look, D. C. 2,3 Hoelscher, J. E. 2,3 Claflin, B. 2,3 Collins, T. C. 4 Nause, J. 5 Nemeth, B. 5; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory AERIJMLPS, Wright-Patterson Air Force Base, Ohio 45433. 2: Semiconductor Research Center Wright State University, Dayton, Ohio 45435. 3: Air Force Research Laboratory AERI/MLPS, Wright-Patterson Air Force Base, Ohio 45433. 4: Oklahoma State University, 203 Whitehursti Hall, Stillwater, Oklahoma 74078. 5: Cermet, Inc., 1019 Collier Road, Atlanta, Georgia 30318.; Source Info: 5/1/2004, Vol. 95 Issue 9, p4802; Subject Term: ZINC oxide; Subject Term: CRYSTALS; Subject Term: VAPORS; Subject Term: ELECTRON emission; Subject Term: EXCITON theory; Subject Term: TRANSPORT theory (Mathematics); NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 4p; Illustrations: 1 Diagram, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.1691186 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12855024&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davidson, James S. AU - Porter, Jonathan R. AU - Dinan, Robert J. AU - Hammons, Michael I. AU - Connell, James D. T1 - Explosive Testing of Polymer Retrofit Masonry Walls. JO - Journal of Performance of Constructed Facilities JF - Journal of Performance of Constructed Facilities Y1 - 2004/05// VL - 18 IS - 2 M3 - Article SP - 100 EP - 106 PB - American Society of Civil Engineers SN - 08873828 AB - The most widely used terrorist tactic is the improvised explosive device, which can range in size from hand-held to truck-size. Most casualties and injuries sustained in such an attack are not caused by the blast itself, but rather by the disintegration and fragmentation of walls, the shattering of windows, and by nonsecured objects propelled at high velocities by the blast. Since 1995, the Air Force Research Laboratory at Tyndall Air Force Base has investigated methods of retrofitting wall structures to better resist blast loads from external explosions. This paper summarizes results from recent tests that involve an innovative use of a sprayed-on polymer to increase blast resistance of unreinforced concrete masonry walls. Test methodology, retrofit materials considered, material properties, mechanisms of effectiveness, and research challenges are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Performance of Constructed Facilities is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EXPLOSIVES KW - POLYMERS KW - MASONRY KW - TERRORISM KW - RETROFITTING KW - Explosives KW - Masonry KW - Polymers KW - Terrorism KW - Tests KW - Walls N1 - Accession Number: 12861109; Davidson, James S. 1 Porter, Jonathan R. 2 Dinan, Robert J. 2 Hammons, Michael I. 3 Connell, James D. 4; Affiliation: 1: Associate Professor, Dept. of Civil and Environmental Engineering, The Univ. of Alabama at Birmingham, Birmingham, AL 35294 2: Senior Research Engineer, Air Force Research Laboratory, 139 Barnes Dr., Suite 2, Tyndall AFB, FL 32403 3: Principal Engineer, Applied Research Associates, Inc., P.O. Box 40128, Tyndall AFB, FL 32403 4: Research Assistant, Dept. of Civil and Environmental Engineering, The University of Alabama at Birmingham, Birmingham, AL 35294; Source Info: May2004, Vol. 18 Issue 2, p100; Subject Term: EXPLOSIVES; Subject Term: POLYMERS; Subject Term: MASONRY; Subject Term: TERRORISM; Subject Term: RETROFITTING; Author-Supplied Keyword: Explosives; Author-Supplied Keyword: Masonry; Author-Supplied Keyword: Polymers; Author-Supplied Keyword: Terrorism; Author-Supplied Keyword: Tests; Author-Supplied Keyword: Walls; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325920 Explosives Manufacturing; NAICS/Industry Codes: 238140 Masonry Contractors; NAICS/Industry Codes: 327310 Cement Manufacturing; Number of Pages: 7p; Illustrations: 4 Black and White Photographs, 3 Diagrams, 6 Charts, 1 Graph; Document Type: Article L3 - 10.1061/(ASCE)0887-3828(2004)18:2(100) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12861109&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cinibulk, Michael K. AU - Keller, Kristin A. AU - Tai-Il Mah T1 - Effect of Yttrium Aluminum Garnet Additions on Alumina-Fiber- Reinforced Porous-Alumina-Matrix Composites. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2004/05// VL - 87 IS - 5 M3 - Article SP - 881 EP - 887 PB - Wiley-Blackwell SN - 00027820 AB - The effects of incorporating yttrium aluminum garnet (YAG) into a porous alumina matrix reinforced with Nextel 610 alumina fibers were investigated. Composites with various amounts of YAG added to the matrix were prepared to determine its effect on retained tensile strengths after heating to 1100° and 1200°C. Strengths of YAG-containing composites were slightly lower than those of an all-alumina-matrix composite after heating for 5 h to 1100°C. However, after heating for 5 or 100 h at 1200°C, all the YAG-containing composites displayed greater strengths and greater strains to failure than the all-alumina composite. At the higher temperature, the presence of YAG is believed to inhibit the densification of the matrix, which helps to maintain higher levels of porosity and weaker interparticle bonding that allows for crack-energy dissipation within the matrix. A reduction in grain growth of the fibers by the presence of segregated Y was also observed, which may also contribute to higher fiber strength, thereby increasing the retained strengths of the YAG-containing composites. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATRICES KW - ALUMINUM oxide KW - COMPOSITE materials KW - YTTRIUM KW - ALUMINUM KW - GARNET KW - STRAINS & stresses (Mechanics) N1 - Accession Number: 13194928; Cinibulk, Michael K. 1 Keller, Kristin A. 1 Tai-Il Mah 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio; Source Info: May2004, Vol. 87 Issue 5, p881; Subject Term: MATRICES; Subject Term: ALUMINUM oxide; Subject Term: COMPOSITE materials; Subject Term: YTTRIUM; Subject Term: ALUMINUM; Subject Term: GARNET; Subject Term: STRAINS & stresses (Mechanics); NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; Number of Pages: 7p; Illustrations: 14 Black and White Photographs, 1 Chart, 7 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13194928&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wirth, Lori J. AU - Carter, Mark R. AU - Jänne, Pasi A. AU - Johnson, Bruce E. T1 - Outcome of patients with pulmonary carcinoid tumors receiving chemotherapy or chemoradiotherapy JO - Lung Cancer (01695002) JF - Lung Cancer (01695002) Y1 - 2004/05// VL - 44 IS - 2 M3 - Article SP - 213 SN - 01695002 AB - Study objectives: To determine the outcome of patients with pulmonary typical and atypical carcinoid tumors treated with chemotherapy with or without radiotherapy. Methods: Patients with pulmonary neuroendocrine tumors treated at our institution from 1990 to 2001 were identified. The medical records of patients with diagnoses of typical or atypical pulmonary carcinoids were reviewed for the presence of evaluable disease, treatment with chemotherapy with or without radiotherapy, response to these treatments, survival and cause of death. Results: Eighteen patients with typical (n=8) or atypical (n=10) pulmonary carcinoid tumors who were treated with chemotherapy with or without radiotherapy were identified. Of these, four received chemotherapy plus chest radiotherapy. Three of these had stable disease and one had a partial response. One of the patients with stable disease to chemoradiotherapy subsequently received chemotherapy alone, to which he had a complete response. Fourteen additional patients were treated with 18 chemotherapy regimens. There were two partial responses, eight stable disease, seven progressive disease and one allergic reaction precluding further treatment. The overall response rate to any chemotherapy was 3/15 (20%, 95% CI 0.07–0.45), and the best overall response rate to chemotherapy with or without chest radiotherapy was 4/18 (22%, 95% CI 0.09–0.45). Median overall survival was 20 months (95% CI 0–51 months). Conclusions: Patients with typical and atypical pulmonary carcinoid tumors can respond to chemotherapy with or without chest radiotherapy, though with response rates that appear less than those of small cell lung cancers. Further characterization of pulmonary carcinoid tumors and study of treatment alternatives for unresectable disease is warranted. [Copyright &y& Elsevier] AB - Copyright of Lung Cancer (01695002) is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Carcinoid tumor KW - Chemotherapy KW - Lung neoplasms KW - Neuroendocrine carcinoma KW - Radiotherapy N1 - Accession Number: 12778433; Wirth, Lori J. 1,2,3; Email Address: lwirth@partners.org Carter, Mark R. 4 Jänne, Pasi A. 1,2,3 Johnson, Bruce E. 1,2,3; Affiliation: 1: Department of Medical Oncology, Dana-Farber Cancer Institute, 44 Binney Street, Boston, MA 02115, USA 2: Department of Medicine, Brigham and Women’s Hospital, Boston, MA 02115, USA 3: Harvard Medical School, Boston, MA 02115, USA 4: Department of Pathology, Wilford Hall Medical Center, United States Air Force, Lackland Air Force Base, San Antonio, TX, USA; Source Info: May2004, Vol. 44 Issue 2, p213; Author-Supplied Keyword: Carcinoid tumor; Author-Supplied Keyword: Chemotherapy; Author-Supplied Keyword: Lung neoplasms; Author-Supplied Keyword: Neuroendocrine carcinoma; Author-Supplied Keyword: Radiotherapy; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.lungcan.2003.11.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12778433&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - He, P. AU - Wilson, G. AU - Russell, C. T1 - Removal of ocular artifacts from electro-encephalogram by adaptive filtering. JO - Medical & Biological Engineering & Computing JF - Medical & Biological Engineering & Computing Y1 - 2004/05// VL - 42 IS - 3 M3 - Article SP - 407 EP - 412 PB - Springer Science & Business Media B.V. SN - 01400118 AB - The electro-encephalogram (EEG) is useful for clinical diagnosis and in biomedical research. EEG signals, however, especially those recorded from frontal channels, often contain strong electro-oculogram (EOG) artifacts produced by eye movements. Existing regression-based methods for removing EOG artifacts require various procedures for preprocessing and calibration that are inconvenient and time-consuming. The paper describes a method for removing ocular artifacts based on adaptive filtering. The method uses separately recorded vertical EOG and horizontal EOG signals as two reference inputs. Each reference input is first processed by a finite impulse response filter of length M (M=3 in this application) and then subtracted from the original EEG. The method is implemented by a recursive least-squares algorithm that includes a forgetting factor (λ = 0.9999 in this application) to track the non-stationary portion of the EOG signals. Results from experimental data demonstrate that the method is easy to implement and stable, converges fast and is suitable for on-line removal of EOG artifacts. The first three coefficients (up to M = 3) were significantly larger than any remaining coefficients. [ABSTRACT FROM AUTHOR] AB - Copyright of Medical & Biological Engineering & Computing is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MEDICAL research KW - ADAPTIVE filters KW - ELECTROENCEPHALOGRAPHY KW - BRAIN -- Radiography KW - ELECTROOCULOGRAPHY KW - REGRESSION analysis KW - Adaptive filtering KW - Artifact removal KW - EEG KW - EOG N1 - Accession Number: 14048500; He, P. 1; Email Address: phe@cs.wright.edu Wilson, G. 2 Russell, C. 2; Affiliation: 1: Department of Biomedical, Industrial & Human Factors Engineering, Wright State University, Dayton, Ohio, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio, USA; Source Info: May2004, Vol. 42 Issue 3, p407; Subject Term: MEDICAL research; Subject Term: ADAPTIVE filters; Subject Term: ELECTROENCEPHALOGRAPHY; Subject Term: BRAIN -- Radiography; Subject Term: ELECTROOCULOGRAPHY; Subject Term: REGRESSION analysis; Author-Supplied Keyword: Adaptive filtering; Author-Supplied Keyword: Artifact removal; Author-Supplied Keyword: EEG; Author-Supplied Keyword: EOG; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 6p; Illustrations: 1 Diagram, 1 Chart, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14048500&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baker AU - E. S. AU - Gidden AU - J. AU - Anderson AU - S. E. AU - Haddad AU - T. S. AU - Bowers AU - M. T. T1 - Isomeric Structural Characterization of Polyhedral Oligomeric Silsesquioxanes (POSS) with Styryl and Epoxy Phenyl Capping Agents. JO - Nano Letters JF - Nano Letters Y1 - 2004/05// VL - 4 IS - 5 M3 - Article SP - 779 EP - 785 SN - 15306984 AB - Ion mobility and molecular modeling methods were used to examine the gas-phase structures of sodiated POSS capped with styryl and epoxy phenyl substituents (Na+StyxEp8-xT8). Results were obtained for x = 5-7 and indicated that three distinct isomers with different collision cross-sections were present for each value of x. Theoretical modeling also yielded three different families of structures for each POSS system, and their calculated cross-sections agreed very well with experimental values (<1% difference). For Na+Sty7EpT8, the three families differ in the number of “paired” Sty groups. For Na+Sty6Ep2T8 and Na+Sty5Ep3T8, the three isomers correspond to the three different ways the Ep groups can be positioned on the POSS cage. [ABSTRACT FROM AUTHOR] AB - Copyright of Nano Letters is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONS KW - METHODOLOGY KW - PHENYL compounds KW - RESEARCH N1 - Accession Number: 13131197; Baker E. S. 1 Gidden J. 1 Anderson S. E. 1 Haddad T. S. 1 Bowers M. T. 1; Affiliation: 1: Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, Department of Chemistry, Westmont College, Santa Barbara, California 93108, and ERC Inc., Air Force Research Laboratory, 10 East Saturn Boulevard, Building 8451, Edwards AFB, California 93524-7680; Source Info: May2004, Vol. 4 Issue 5, p779; Subject Term: IONS; Subject Term: METHODOLOGY; Subject Term: PHENYL compounds; Subject Term: RESEARCH; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13131197&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Intrator, T. AU - Zhang, S. Y. AU - Degnan, J. H. AU - Furno, I. AU - Grabowski, C. AU - Hsu, S. C. AU - Ruden, E. L. AU - Sanchez, P. G. AU - Taccetti, J. M. AU - Tuszewski, M. AU - Waganaar, W. J. AU - Wurden, G. A. T1 - A high density field reversed configuration (FRC) target for magnetized target fusion: First internal profile measurements of a high density FRC. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2004/05// VL - 11 IS - 5 M3 - Article SP - 2580 EP - 2585 PB - American Institute of Physics SN - 1070664X AB - Magnetized target fusion (MTF) is a potentially low cost path to fusion, intermediate in plasma regime between magnetic and inertial fusion energy. It requires compression of a magnetized target plasma and consequent heating to fusion relevant conditions inside a converging flux conserver. To demonstrate the physics basis for MTF, a field reversed configuration (FRC) target plasma has been chosen that will ultimately be compressed within an imploding metal liner. The required FRC will need large density, and this regime is being explored by the FRX-L (FRC-Liner) experiment. All theta pinch formed FRCs have some shock heating during formation, but FRX-L depends further on large ohmic heating from magnetic flux annihilation to heat the high density (2-5 ×1022m³), plasma to a temperature of Te+Ti≈500 eV. At the field null, anomalous resistivity is typically invoked to characterize the resistive like flux dissipation process. The first resistivity estimate for a high density collisional FRC is shown here. The flux dissipation process is both a key issue for MTF and an important underlying physics question. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON configuration KW - TARGETS (Nuclear physics) KW - ENERGY dissipation KW - PLASMA (Ionized gases) KW - SHOCK waves KW - MAGNETIC flux N1 - Accession Number: 12952618; Intrator, T. 1 Zhang, S. Y. 1 Degnan, J. H. 2 Furno, I. 1 Grabowski, C. 2 Hsu, S. C. 1 Ruden, E. L. 2 Sanchez, P. G. 1 Taccetti, J. M. 1 Tuszewski, M. 1 Waganaar, W. J. 1 Wurden, G. A. 1; Affiliation: 1: Los Alamos National Laboratory, Los Alamos, New Mexico 87545. 2: Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, New Mexico 87117.; Source Info: May2004, Vol. 11 Issue 5, p2580; Subject Term: ELECTRON configuration; Subject Term: TARGETS (Nuclear physics); Subject Term: ENERGY dissipation; Subject Term: PLASMA (Ionized gases); Subject Term: SHOCK waves; Subject Term: MAGNETIC flux; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.1689666 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12952618&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, Hyeonjae AU - Foster, Mark D. AU - Jiang, Hao AU - Tullis, Scott AU - Bunning, Timothy J. AU - Majkrzak, Charles F. T1 - Interface structure of photonic multilayers prepared by plasma enhanced chemical vapor deposition JO - Polymer JF - Polymer Y1 - 2004/05// VL - 45 IS - 10 M3 - Article SP - 3175 SN - 00323861 AB - The structures of substrate/layer, layer/layer, and layer/air interfaces in optical multilayers made using plasma enhanced chemical vapor deposition (PECVD) have been probed for the first time using X-ray reflectivity and neutron reflectivity. From the point of view of optical applications the interfaces are extremely sharp, sharper than is often achievable with the self-assembly of block copolymers or deposition techniques in which the polymer layers contact while in a fluid state. The average interface width, aI, between layers made from different precursors is about 40 A˚ (16 A˚ rms). The layer/layer interfaces are generally 2–3 times broader than the layer/air interfaces. Polymeric fluorocarbon films deposited on a Si substrate using PECVD with octafluorocyclobutane (OFCB) monomer show uniform scattering length density with depth except for a region of molecular thickness immediately adjacent to the substrate. Films made from deuterated benzene show uniform density throughout the film thickness. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL structure KW - CHEMICAL vapor deposition KW - COPOLYMERS KW - POLYMERS KW - FLUOROCARBONS KW - BENZENE KW - Interface structure KW - PECVD multilayer KW - Reflectivity N1 - Accession Number: 12837234; Kim, Hyeonjae 1; Email Address: hkim1@uakron.edu Foster, Mark D. 1; Email Address: mfoster@uakron.edu Jiang, Hao 2,3 Tullis, Scott 2 Bunning, Timothy J. 2 Majkrzak, Charles F. 4; Affiliation: 1: Maurice Morton Institute of Polymer Science, The University of Akron, 170 University Ave., Akron, OH 443253909, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 54533, USA 3: Anteon Co., Dayton, OH 45431, USA 4: NIST Center for Neutron Research, Gaithersburg, MD 20899, USA; Source Info: May2004, Vol. 45 Issue 10, p3175; Subject Term: CHEMICAL structure; Subject Term: CHEMICAL vapor deposition; Subject Term: COPOLYMERS; Subject Term: POLYMERS; Subject Term: FLUOROCARBONS; Subject Term: BENZENE; Author-Supplied Keyword: Interface structure; Author-Supplied Keyword: PECVD multilayer; Author-Supplied Keyword: Reflectivity; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.polymer.2004.03.028 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12837234&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ivasishin, O.M. AU - Shevchenko, S.V. AU - Semiatin, S.L. T1 - Modeling of abnormal grain growth in textured materials JO - Scripta Materialia JF - Scripta Materialia Y1 - 2004/05// VL - 50 IS - 9 M3 - Article SP - 1241 SN - 13596462 AB - The effect of initial texture on the occurrence of abnormal grain growth (AGG) was modeled via a 3D Monte-Carlo approach. A diagram of texture characteristics which give rise to AGG was derived. AGG was associated with periods of linear growth behaviour of the largest grain within the microstructure. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL crystals -- Growth KW - MICROSTRUCTURE KW - MATERIALS -- Texture KW - MONTE Carlo method KW - Abnormal grain growth KW - Potts model KW - Texture N1 - Accession Number: 12375204; Ivasishin, O.M. 1 Shevchenko, S.V. 1; Email Address: shevchsv@imp.kiev.ua Semiatin, S.L. 2; Affiliation: 1: Department of strength and ductility of inhomogeneous alloys, Institute for Metal Physics, 36 Vernadsky Street, Kiev 03142, Ukraine 2: Air Force Research Laboratory, AFRL/ML, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: May2004, Vol. 50 Issue 9, p1241; Subject Term: METAL crystals -- Growth; Subject Term: MICROSTRUCTURE; Subject Term: MATERIALS -- Texture; Subject Term: MONTE Carlo method; Author-Supplied Keyword: Abnormal grain growth; Author-Supplied Keyword: Potts model; Author-Supplied Keyword: Texture; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.scriptamat.2004.01.036 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12375204&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Renard, Jean J. AU - Calidonna, Sheryl E. AU - Henley, Michael V. T1 - Fate of ammonia in the atmosphere—a review for applicability to hazardous releases JO - Journal of Hazardous Materials JF - Journal of Hazardous Materials Y1 - 2004/04/30/ VL - 108 IS - 1/2 M3 - Article SP - 29 SN - 03043894 AB - The physical and chemical mechanisms responsible for the removal of ammonia from the atmosphere have been reviewed. Capture by atmospheric moisture (clouds, rain, fog), surface water (rivers, lakes, seas), and deposition on vegetation and soil constitute the main pathways for ammonia removal from the troposphere. Ammonia catalyzes the atmospheric oxidation of sulfur dioxide to sulfur trioxide and reacts rapidly with acidic components of the atmosphere (sulfuric, nitric, and hydrochloric acids). The ammonium salts formed are the main components of smog aerosols and thus affect the opacity of the atmosphere and the earth radiation budget. Slow oxidation of ammonia in the atmosphere plays only a minor role in its removal. The data obtained for ammonia reactions under normal atmospheric conditions are generally applicable to model chemical reactions occurring during massive release of ammonia in the atmosphere, provided the impact of high ammonia concentration on the mass transfer processes that control some of these reactions, are taken into account. [Copyright &y& Elsevier] AB - Copyright of Journal of Hazardous Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AMMONIA KW - ATMOSPHERIC chemistry KW - CHEMICAL reactions KW - OXIDATION KW - Ammonia KW - Atmospheric chemistry KW - Catastrophic release KW - Modeling KW - Plume dispersion N1 - Accession Number: 12777214; Renard, Jean J. 1 Calidonna, Sheryl E. 1 Henley, Michael V. 2; Email Address: mike.henley@tyndall.af.mil; Affiliation: 1: Applied Research Associates, Inc., Airbase Technologies Division, 139 Barnes Drive, Suite 2, Tyndall AFB, FL 32403-5323, USA 2: Air Force Research Laboratory, Airbase Technologies Division, 139 Barnes Drive, Suite 2, Tyndall AFB, FL 32403-5323, USA; Source Info: Apr2004, Vol. 108 Issue 1/2, p29; Subject Term: AMMONIA; Subject Term: ATMOSPHERIC chemistry; Subject Term: CHEMICAL reactions; Subject Term: OXIDATION; Author-Supplied Keyword: Ammonia; Author-Supplied Keyword: Atmospheric chemistry; Author-Supplied Keyword: Catastrophic release; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Plume dispersion; NAICS/Industry Codes: 325610 Soap and cleaning compound manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; NAICS/Industry Codes: 325311 Nitrogenous Fertilizer Manufacturing; NAICS/Industry Codes: 325612 Polish and Other Sanitation Good Manufacturing; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 32p; Document Type: Article L3 - 10.1016/j.jhazmat.2004.01.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12777214&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jordan, J. L. AU - Sekine, T. AU - Kobayashi, T. AU - Li, X. AU - Thadhani, N. N. AU - El-Raghy, T. AU - Barsoum, M. W. T1 - Hugoniot Measurements of High Pressure Phase Stability of Titanium-Silicon Carbide (Ti3SiC2). JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/04/26/ VL - 706 IS - 1 M3 - Article SP - 77 EP - 80 PB - American Institute of Physics SN - 0094243X AB - Hugoniot measurements of the high-pressure phase stability of titanium-silicon carbide (Ti3SiC2) were performed in this study. Ti3SiC2 is a unique ceramic having high stiffness, but low hardness. Time-resolved measurements employing plate-impact geometry were conducted on Ti3SiC2 samples in the pressure range of 50 to 120 GPa using the NIMS two-stage light-gas-gun. Experiments performed in the lower pressure range followed the continuous pressure-volume compressibility trend reported by Onodera, et al. in static high-pressure experiments. At pressures around 80–120 GPa, deviation in pressure-volume compressibility to a more compressed state was observed indicating evidence of a possible phase change. Streak camera records of the free surface velocity measured using the inclined mirror method also showed discontinuous slope, indicating a possible pressure-induced phase transformation. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HIGH pressure (Science) KW - PRESSURE KW - STABILITY (Mechanics) KW - SILICON carbide KW - SILICON KW - CARBIDES KW - CARBON compounds N1 - Accession Number: 14020155; Jordan, J. L. 1,2 Sekine, T. 3 Kobayashi, T. 3 Li, X. 3 Thadhani, N. N. 1 El-Raghy, T. 4 Barsoum, M. W. 5; Affiliation: 1: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245 2: Air Force Research Laboratory, AFRL/MNME, Eglin AFB, FL 32542 3: Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Japan 305-0044 4: 3-ONE-2 LLC, 4 Covington Place, Voorhees, NJ 08043 5: Department of Materials Engineering, Drexel University, Philadelphia, PA 19104; Source Info: 2004, Vol. 706 Issue 1, p77; Subject Term: HIGH pressure (Science); Subject Term: PRESSURE; Subject Term: STABILITY (Mechanics); Subject Term: SILICON carbide; Subject Term: SILICON; Subject Term: CARBIDES; Subject Term: CARBON compounds; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.1780188 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14020155&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Thissell, W. Richards AU - Tonks, Davis L. AU - Schwartz, Dan AU - House, Joel T1 - Dynamic Failure Resistance of Two Tantalum Materials with Different Melt Practice Sequences. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/04/26/ VL - 706 IS - 1 M3 - Article SP - 495 EP - 498 PB - American Institute of Physics SN - 0094243X AB - The dynamic failure resistance of a Cabot Ta is compared to that of a Starck Ta under nearly identical loading conditions. The two materials have nominally very similar grain sizes, texture, and bulk impurity contents. The two materials do differ in the melt practice used, the Cabot material underwent triple e-beam re-melting, while the Starck material underwent a double e-beam re-melting followed by a vacuum arc re-melt (VAR). Melt practice strongly influences the material cleanliness in most materials and hence greatly influences fracture properties such as fatigue resistance and fracture toughness. The samples were tested in a flyer plate experiment with momentum trapping and soft recovery. A VISAR recorded the free surface velocity profile of the samples. The resulting damage in the microstructures was quantified, statistically reduced and used in developing separate parameters for a damage model. Comparisons between simulation predictions and experimental measurements of free surface velocity, porosity distributions, and volumetric number density distributions of voids are presented. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DYNAMICS KW - FUSION (Phase transformation) KW - MOMENTUM (Mechanics) KW - SIMULATION methods & models KW - PHYSICS N1 - Accession Number: 14020057; Thissell, W. Richards 1 Tonks, Davis L. 2 Schwartz, Dan 3 House, Joel 4; Affiliation: 1: MST-8: Structure-Property Relationships, MS: G755, Los Alamos National Laboratory, Los Alamos NM 87545 2: X-7: Materials Modeling, MS: F699, Los Alamos National Laboratory, Los Alamos NM 87545 3: Plutonium Metallurgy, MS: G721, Los Alamos National Laboratory, Los Alamos NM 87545 4: United States Air Force, AFRL/MNMW, 101 West Eglin Blvd, Suite 135, Eglin AFB, FL 32542-6810; Source Info: 2004, Vol. 706 Issue 1, p495; Subject Term: DYNAMICS; Subject Term: FUSION (Phase transformation); Subject Term: MOMENTUM (Mechanics); Subject Term: SIMULATION methods & models; Subject Term: PHYSICS; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.1780285 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14020057&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gilmore, Martin R. AU - Foster Jr., Joseph C. AU - Wilson, Leo L. AU - Jones, Stanley E. T1 - The Generalized Taylor Test. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/04/26/ VL - 706 IS - 1 M3 - Article SP - 1331 EP - 1334 PB - American Institute of Physics SN - 0094243X AB - Taylor Impact Tests, designed to produce very high loading rates have been successfully used to study and characterize material response under high loading conditions for many years. The classic analysis of Taylor has been expanded to generate a complete tensor representation of the strain field. Expanded equation of motion analysis has enabled a significant portion of the stress tensor to be populated. The analysis can be applied to time resolved data to populate complete tensor descriptions of the stress and strain fields as functions of time for these high strain (50%) and high strain rate (103–5s-1) environments. The analysis is independent of the geometrical configuration of the impact specimen; from this perspective the work is aimed at generalizing Taylor’s original ideas. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICAL sciences KW - PHYSICS KW - CALCULUS of tensors KW - GEOMETRY N1 - Accession Number: 14019860; Gilmore, Martin R. 1 Foster Jr., Joseph C. 2 Wilson, Leo L. 3 Jones, Stanley E. 4; Affiliation: 1: Defense Science and Technology Laboratory (Dstl) Farnborough Hants GU14 OLX, UK 2: Air Force Research laboratory/ Munitions Directorate (AFRL/M), Eglin AFB, FL 3: Science Application Incorporated (SAIC), Eglin AFB, FL 4: Univ Alabama, Box 870280, Tuscaloosa, AL 35487; Source Info: 2004, Vol. 706 Issue 1, p1331; Subject Term: PHYSICAL sciences; Subject Term: PHYSICS; Subject Term: CALCULUS of tensors; Subject Term: GEOMETRY; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.1780483 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14019860&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ferranti Jr., Louis AU - Armstrong, Ronald W. AU - Thadhani, Naresh N. T1 - Elastic/plastic deformation behavior in a continuous ball indentation test JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2004/04/25/ VL - 371 IS - 1/2 M3 - Article SP - 251 SN - 09215093 AB - Continuous indentation tests are now commonly used to measure the elastic moduli of materials in accordance with the unloading response of a plastic indentation. However, a previous technique utilizing a Hertzian ball indentation test, applied to the initial loading behavior, is shown to be equally useful provided that sufficient sensitivity is available for the loading curve measurements. Continuous loading measurements for the indentation of lignin are used to demonstrate the possibility of using the loading curve for computing the elastic modulus, and the analysis is carried over to test results on solid and porous aluminum materials. The test results show that the elastic modulus for solid aluminum has a value of 67.8±6.6 GPa, in reasonable agreement with the handbook value. The introduction of few percent porosity reduces the elastic modulus approximately by one-third to 22.6±4.5 GPa. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POROSITY KW - ELASTICITY KW - ALUMINUM KW - POROUS materials KW - Continuous ball indentation KW - Elastic indentation KW - Elastic modulus KW - Elasticity KW - Instrumented hardness KW - Plasticity N1 - Accession Number: 12838006; Ferranti Jr., Louis 1 Armstrong, Ronald W. 2 Thadhani, Naresh N. 1; Email Address: naresh.thadhani@mse.gatech.edu; Affiliation: 1: School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst, Drive, Atlanta, GA 30332-0245, USA 2: Air Force Research Laboratory, Munitions Directorate, Eglin Air Force Base, FL 32542-5910, USA; Source Info: Apr2004, Vol. 371 Issue 1/2, p251; Subject Term: POROSITY; Subject Term: ELASTICITY; Subject Term: ALUMINUM; Subject Term: POROUS materials; Author-Supplied Keyword: Continuous ball indentation; Author-Supplied Keyword: Elastic indentation; Author-Supplied Keyword: Elastic modulus; Author-Supplied Keyword: Elasticity; Author-Supplied Keyword: Instrumented hardness; Author-Supplied Keyword: Plasticity; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.msea.2003.12.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12838006&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brady-Roberts, Eletha G. AU - Mattie, David AU - Dodd, Darol E. T1 - Preface. JO - Journal of Toxicology & Environmental Health: Part A JF - Journal of Toxicology & Environmental Health: Part A Y1 - 2004/04/23/ VL - 67 IS - 8-10 M3 - Article SP - 607 EP - 610 SN - 15287394 AB - Introduces a series of articles on toxicology and risk assessment presented at the 2003 Conference on Toxicology and Risk Assessment in Ohio. Development of regulation for water contaminants; Physiological models for predicting emergency health hazards; Tools for assessing microbial risk. KW - RISK assessment KW - TOXICOLOGY KW - WATER pollution KW - HEALTH risk assessment KW - EMERGENCY management KW - MICROBIAL contamination N1 - Accession Number: 12673740; Brady-Roberts, Eletha G. 1; Email Address: roberts.eletha@epa.gov Mattie, David 2; Email Address: david.mattie@wpafb.af.mil Dodd, Darol E. 3; Email Address: darol.dodd@wpafb.af.mil; Affiliation: 1: National Center for Environmental Assessment Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, OH, USA 2: Biosciences and Protection Division, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA 3: ManTech Environmental Technology, Inc., Wright-Patterson AFB, OH, USA; Source Info: 2004, Vol. 67 Issue 8-10, p607; Subject Term: RISK assessment; Subject Term: TOXICOLOGY; Subject Term: WATER pollution; Subject Term: HEALTH risk assessment; Subject Term: EMERGENCY management; Subject Term: MICROBIAL contamination; NAICS/Industry Codes: 624230 Emergency and Other Relief Services; NAICS/Industry Codes: 911290 Other federal protective services; NAICS/Industry Codes: 912190 Other provincial protective services; NAICS/Industry Codes: 913190 Other municipal protective services; NAICS/Industry Codes: 922190 Other Justice, Public Order, and Safety Activities; NAICS/Industry Codes: 923120 Administration of Public Health Programs; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12673740&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hostutler, David A. AU - Smith, Tony C. AU - Hager, Gordon D. AU - McBane, George C. AU - Heaven, Michael C. T1 - State-to-state rotational relaxation rate constants for CO+Ne from IR–IR double-resonance experiments: Comparing theory to experiment. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2004/04/22/ VL - 120 IS - 16 M3 - Article SP - 7483 EP - 7489 PB - American Institute of Physics SN - 00219606 AB - IR–IR double-resonance experiments were used to study the state-to-state rotational relaxation of CO with Ne as a collision partner. Rotational levels in the range Ji=2–9 were excited and collisional energy transfer of population to the levels Jf=2–8 was monitored. The resulting data set was analyzed by fitting to numerical solutions of the master equation. State-to-state rate constant matrices were generated using fitting law functions. Fitting laws based on the modified exponential gap (MEG) and statistical power exponential gap (SPEG) models were used; the MEG model performed better than the SPEG model. A rate constant matrix was also generated from scattering calculations that employed the ab initio potential energy surface of McBane and Cybulski [J. Chem. Phys. 110, 11 734 (1999)]. This theoretical rate constant matrix yielded kinetic simulations that agreed with the data nearly as well as the fitted MEG model and was unique in its ability to reproduce both the rotational energy transfer and pressure broadening data for Ne–CO. The theoretical rate coefficients varied more slowly with the energy gap than coefficients from either of the fitting laws. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON nuclear double resonance KW - COLLISIONAL excitation KW - FRACTIONAL parentage coefficients KW - MATRICES KW - EXPONENTIAL functions N1 - Accession Number: 12727284; Hostutler, David A. 1 Smith, Tony C. 1 Hager, Gordon D. 1 McBane, George C. 2 Heaven, Michael C. 3; Affiliation: 1: Air Force Research Laboratory/Directed Energy Directorate, Kirtland Air Force Base, New Mexico 87117-5776 2: Department of Chemistry, Grand Valley State University, Allendale, Michigan 49401 3: Department of Chemistry, Emory University, Atlanta, Georgia 30322; Source Info: 4/22/2004, Vol. 120 Issue 16, p7483; Subject Term: ELECTRON nuclear double resonance; Subject Term: COLLISIONAL excitation; Subject Term: FRACTIONAL parentage coefficients; Subject Term: MATRICES; Subject Term: EXPONENTIAL functions; Number of Pages: 7p; Illustrations: 3 Charts, 5 Graphs; Document Type: Article L3 - 10.1063/1.1687314 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12727284&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller AU - T. M. AU - Arnold AU - S. T. AU - Viggiano AU - A. A. AU - Stevens Miller AU - A. E. T1 - Acidity of a Nucleotide Base: Uracil. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2004/04/22/ VL - 108 IS - 16 M3 - Article SP - 3439 EP - 3446 SN - 10895639 AB - Experiment and calculations are used to show that the gas-phase acidity of uracil is comparable to that of HCl. The gas-phase acidity of uracil (denoted here by U) was bracketed by proton-transfer measurements involving U and various reference acids (denoted here by A) of known gas-phase acidity. Rate constants for proton transfer from the reference acid A to the conjugate anion of uracil, (U-H)-, were measured in a selected-ion flow tube at 298 K. Rate constants for proton transfer from U to ions (A-H)- were measured at 467 K in a flowing-afterglow Langmuir probe apparatus. Here, (U-H) or (A-H) indicates a U or A molecule which is missing an H atom, respectively. The result is ΔH°acid(uracil) = 333 ± 5 kcal mol-1 and ΔG°acid(uracil) = 326 ± 5 kcal mol-1 at 298 K, which agrees with earlier work. Thermal electron attachment to uracil was found to be too slow to permit measurement of a rate constant, consistent with the gas-phase acidity given above. G3 and G3(MP2) calculations are reported for uracil, and for the each of the (U-H) radicals and (U-H)- ions that result from H or H+ loss from each of the four hydrogen sites of U (on the N1, N3, C5, and C6 positions). From the calculated total energies we obtain the gas-phase acidity of uracil, the four U-H homolytic bond strengths, and the electron affinities of the four possible fragment radicals. We confirm earlier work that the most acidic site in uracil is at the N1 site; this site is where uracil becomes covalently bonded to a carbon of the ribose sugar in RNA. G3 calculations for the N1 site at 298 K give ΔH°acid(uracil) = 334.5 kcal mol-1 and ΔG°acid(uracil) = 327.1 kcal mol-1 at 298 K, in good agreement with the experiment. The weakest H-atom bond enthalpy (at the N1 site) is calculated to be 101.8 kcal mol-1. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - URACIL KW - HETEROCYCLIC compounds KW - SOLUTION (Chemistry) KW - NUCLEIC acids N1 - Accession Number: 16432950; Miller T. M. 1 Arnold S. T. 1 Viggiano A. A. 1 Stevens Miller A. E. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom Air Force Base, Massachusetts 01731-3010, and ChemMotif, Inc., Suite 211, 60 Thoreau Street, Concord, Massachusetts 01742; Source Info: Apr2004, Vol. 108 Issue 16, p3439; Subject Term: URACIL; Subject Term: HETEROCYCLIC compounds; Subject Term: SOLUTION (Chemistry); Subject Term: NUCLEIC acids; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16432950&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ferguson, E.E. AU - Viggiano, A.A. AU - Gillery, C. AU - Rosmus, P. T1 - Collisional electron detachment from NO− by rare gases JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2004/04/15/ VL - 233 IS - 1-3 M3 - Article SP - 45 SN - 13873806 AB - A model is proposed to explain earlier measurements of electron detachment from NO− by He, Ne, and several diatomic and triatomic molecules. The measurements have been extended to include detachment by Ar with a rate constant of 2×10−14 cm3 s−1 at 500 K. The previously puzzling inefficiencies are satisfactorily explained by a mechanism in which NO− (v=0) is vibrationally excited to NO− (v=1), followed by autodetachment. The data are analyzed with Landau–Teller theory after invoking the principle of detailed balance. Ab initio calculations of the NO− interactions potentials with He, Ne, and Ar have been made. Range parameters derived from Landau–Teller plots and ab initio calculations are in the range expected although not in exact agreement. The ab initio potential attractive wells make clear why the necessary vibrational excitations in He and Ne collisions with NO− (and hence collisional detachment) are far more effective than in the case for Ar. This appears to be the first application of Landau–Teller theory to a negative ion. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COLLISIONS (Nuclear physics) KW - CHARGE exchange KW - NOBLE gases KW - ELECTRONS KW - Collisional electron detachment KW - NO− KW - Rare gases N1 - Accession Number: 12899400; Ferguson, E.E. 1 Viggiano, A.A. 2; Email Address: albert.viggiano@hanscom.af.mil Gillery, C. 3 Rosmus, P. 3; Affiliation: 1: NOAA CMDL, 325 Broadway, Boulder, CO 80303-3328, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Rd., Hanscom AFB, MA 01731-3010, USA 3: Laboratoire de Chimie Théorique, Université de Marne-la-Vallée, F-77454 Champs sur Marne, France; Source Info: Apr2004, Vol. 233 Issue 1-3, p45; Subject Term: COLLISIONS (Nuclear physics); Subject Term: CHARGE exchange; Subject Term: NOBLE gases; Subject Term: ELECTRONS; Author-Supplied Keyword: Collisional electron detachment; Author-Supplied Keyword: NO−; Author-Supplied Keyword: Rare gases; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.ijms.2003.10.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12899400&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Thomas M. AU - Van Doren, Jane M. AU - Viggiano, A.A. T1 - Electron attachment and detachment: C6F6 JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2004/04/15/ VL - 233 IS - 1-3 M3 - Article SP - 67 SN - 13873806 AB - Electron attachment to C6F6 is especially interesting because of the large change in symmetry between the neutral (D6h) and anion (C2v). We have made measurements of rate constants for electron attachment to C6F6 and thermal electron detachment from the parent anion, C6F6−, over the temperature range 297–400 K, in 133 Pa of He gas. A flowing-afterglow Langmuir probe (FALP) apparatus was used for this work. At 298 K, the electron attachment rate constant is ka=8.6±3.0×10−8 cm3 s−1, and the detachment rate constant kd is approximately 35 s−1. As the temperature increases kd increases rapidly, to about 3000 s−1 at 400 K. The attachment/detachment equilibrium implies that the electron affinity of C6F6 is 0.53±0.05 eV. Density functional calculations were carried out in order to obtain thermal quantities needed to convert the equilibrium constant ka/kd into EA(C6F6). G3(MP2) calculations yielded an electron affinity of 0.454 eV. The fluoride affinity of C6F6 was calculated to be 1.26 eV at 298 K using this same method. We expect the G3(MP2) results to be good within 0.1 eV. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON scattering KW - VALENCE (Chemistry) KW - ANIONS KW - EQUILIBRIUM KW - Electron affinity KW - Electron attachment KW - Electron detachment KW - Flowing-afterglow Langmuir probe technique N1 - Accession Number: 12899403; Miller, Thomas M. 1; Email Address: Thomas.Miller@hanscom.af.mil Van Doren, Jane M. 2 Viggiano, A.A. 1; Email Address: viggiano@plh.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Bedford, MA 01731-3010, USA 2: Department of Chemistry, College of the Holy Cross, Worcester, MA 01610-2395, USA; Source Info: Apr2004, Vol. 233 Issue 1-3, p67; Subject Term: ELECTRON scattering; Subject Term: VALENCE (Chemistry); Subject Term: ANIONS; Subject Term: EQUILIBRIUM; Author-Supplied Keyword: Electron affinity; Author-Supplied Keyword: Electron attachment; Author-Supplied Keyword: Electron detachment; Author-Supplied Keyword: Flowing-afterglow Langmuir probe technique; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.ijms.2003.11.014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12899403&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Levandier, Dale J. AU - Yu-hui Chiu AU - Dressler, Rainer A. T1 - Reactions of O+ with CnH2n+2, n=2–4: A guided-ion beam study. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2004/04/15/ VL - 120 IS - 15 M3 - Article SP - 6999 EP - 7007 PB - American Institute of Physics SN - 00219606 AB - We have measured absolute reaction cross sections for the interaction of O+ with ethane, propane, and n-butane at collision energies in the range from near thermal to approximately 20 eV, using the guided-ion beam (GIB) technique. We have also measured product recoil velocity distributions using the GIB time-of-flight (TOF) technique for several product ions at a series of collision energies. The total cross sections for each alkane are in excess of 100 Å2 at energies below ∼2 eV, and in each case several ionic products arise. The large cross sections suggest reactions that are dominated by large impact parameter collisions, as is consistent with a scenario in which the many products derive from a near-resonant, dissociative charge-transfer process that leads to several fragmentation pathways. The recoil velocities, which indicate product ions with largely thermal velocity distributions, support this picture. Several product ions, most notably the C2H3+ fragment for each of the alkanes, exhibit enhanced reaction efficiency as collision energy increases, which can be largely attributed to endothermic channels within the dissociative charge-transfer mechanism. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL reactions KW - COLLISIONS (Nuclear physics) KW - ION bombardment KW - ALKANES KW - FRAGMENTATION reactions KW - CHARGE transfer KW - PROPANE N1 - Accession Number: 12687750; Levandier, Dale J. 1 Yu-hui Chiu 1 Dressler, Rainer A. 1; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731; Source Info: 4/15/2004, Vol. 120 Issue 15, p6999; Subject Term: CHEMICAL reactions; Subject Term: COLLISIONS (Nuclear physics); Subject Term: ION bombardment; Subject Term: ALKANES; Subject Term: FRAGMENTATION reactions; Subject Term: CHARGE transfer; Subject Term: PROPANE; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 454312 Liquefied petroleum gas (bottled gas) dealers; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; NAICS/Industry Codes: 424710 Petroleum Bulk Stations and Terminals; Number of Pages: 9p; Illustrations: 1 Diagram, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1063/1.1667459 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12687750&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Thomas M. AU - Friedman, Jeffrey F. AU - Viggiano, A. A. T1 - Electron attachment and detachment and the electron affinity of cyclo-C4F8. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2004/04/15/ VL - 120 IS - 15 M3 - Article SP - 7024 EP - 7028 PB - American Institute of Physics SN - 00219606 AB - New measurements have been made of rate constants for electron attachment to c-C4F8 (octafluorocyclobutane) and thermal electron detachment from the parent anion, c-C4F8-, over the temperature range 298–400 K in 133 Pa of He gas in a flowing-afterglow Langmuir-probe apparatus. From these data the electron affinity for c-C4F8 was determined, EA(c-C4F8)=0.63±0.05 eV. The motivation was to resolve a discrepancy between our earlier EA estimate and a higher value (EA=1.05±0.10 eV) reported from a recent experiment of Hiraoka et al. [J. Chem. Phys. 116, 7574 (2002)]. The electron attachment rate constant is 9.3±3.0×10-9 cm3 s-1 at 298 K. The electron detachment rate constant is negligible at room temperature but climbs to 1945±680 s-1 at 400 K. G3(MP2) calculations were carried out for the neutral (D2d, 1A1) and anion (D4h, 2A2u) and yielded EA(c-C4F8-)=0.595 eV. Bond energies were also calculated for loss of F from c-C4F8 and loss of F or F- from c-C4F8-. From these, dissociative electron attachment is found to be endothermic by at least 1.55 eV. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL affinity KW - THERMAL electrons KW - ELECTRON paramagnetic resonance KW - CHARGE transfer KW - PLASMA etching N1 - Accession Number: 12687747; Miller, Thomas M. 1; Email Address: thomas.miller@hanscom.af.mil Friedman, Jeffrey F. 2,3 Viggiano, A. A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Bedford,Massachusetts 01731-3010 2: Department of Physics, University of Puerto Rico, Mayaguez, Puerto Rico 00681-9016 3: Air Force Research Laboratory, Directed Energy Directorate, Kirtland Air Force Base, Albuquerque,New Mexico 87117-5776; Source Info: 4/15/2004, Vol. 120 Issue 15, p7024; Subject Term: CHEMICAL affinity; Subject Term: THERMAL electrons; Subject Term: ELECTRON paramagnetic resonance; Subject Term: CHARGE transfer; Subject Term: PLASMA etching; Number of Pages: 5p; Illustrations: 2 Charts, 2 Graphs; Document Type: Article L3 - 10.1063/1.1683082 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12687747&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhang AU - Y. AU - Alonso AU - P. R. AU - Martinez-Limia AU - A. AU - Scanlon AU - L. G. AU - Balbuena AU - P. B. T1 - Crystalline Structure and Lithium-Ion Channel Formation in Self-Assembled Di-lithium Phthalocyanine: Theory and Experiments. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2004/04/15/ VL - 108 IS - 15 M3 - Article SP - 4659 EP - 4668 SN - 15206106 AB - The crystalline structure of di-lithium phthalocyanine (Li2Pc) is analyzed via a sequence of theoretical methods starting with ab-initio optimizations of a single molecule and dimers, followed by a series of classical molecular dynamics simulations that emulate four alternative crystalline structures. Calculated X-ray spectra are compared with those from experiments, and the results suggest that the features correspond to a dominant β-phase, although similarities in the calculated spectrum of alternative phases may imply the possible existence of polymorphism in this material. Since Li2Pc has been proposed as a solid electrolyte for lithium-ion batteries, the existence of ion-conducting channels is examined through the analyses of the simulated structures. Dynamical properties such as the lithium-ionic diffusion coefficient are determined through the velocity autocorrelation function and compared to experimental values. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALS KW - MOLECULAR dynamics KW - DYNAMICS KW - REGRESSION analysis N1 - Accession Number: 16432997; Zhang Y. 1 Alonso P. R. 1 Martinez-Limia A. 1 Scanlon L. G. 1 Balbuena P. B. 1; Affiliation: 1: Department of Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, and Air Force Research Laboratory, Energy Storage & Thermal Sciences Branch, Wright-Patterson Air Force Base, Ohio 45433; Source Info: Apr2004, Vol. 108 Issue 15, p4659; Subject Term: CRYSTALS; Subject Term: MOLECULAR dynamics; Subject Term: DYNAMICS; Subject Term: REGRESSION analysis; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16432997&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ponnappan, Rengasamy AU - Ravigururajan, T.S. T1 - Contact thermal resistance of Li-ion cell electrode stack JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2004/04/15/ VL - 129 IS - 1 M3 - Article SP - 7 SN - 03787753 AB - Lithium-ion batteries are widely used for portable energy storage in space power and consumer electronics applications. While the performance of these batteries is mainly depended upon the electrochemical aspects and contact electrical resistance of the cell stack, issues relating to contact thermal resistance between various layers of the cell stack could become more relevant under high rate of charge/discharge and extreme temperature operating conditions. An experimental program was carried out to establish the contact thermal resistance of a typical cell stack comprising graphite-coated copper anode, lithium cobalt oxide-coated aluminum cathode, polyethylene/polypropylene separator and electrolyte under various contact pressures and temperatures. The cell stack was not electrically charged or discharged during present experiments. Tests were conducted over a range of temperatures from −20 to 50 °C and pressures from 0 to 250 psi (1.72 MPa). The results show that, in general, resistance increases with decreasing pressure and the effect is significant when the pressure is reduced below 100 psi. Damage to the separator due to hot spots was observed at interface temperatures greater than 80 °C. Present results indicate that extreme operating temperatures may affect the performance of Li-ion batteries. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Battery thermal design data KW - Contact pressure KW - Electrode stack packaging KW - Li-ion cell electrode layers KW - Separator hot-spot KW - Temperature and pressure measurement KW - Thermal resistance N1 - Accession Number: 12777597; Ponnappan, Rengasamy 1; Email Address: rengasamy.ponnappan@wpafb.af.mil Ravigururajan, T.S. 2; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio, OH 45433-7251, USA 2: Department of Mechanical Engineering, Wichita State University, Wichita, KS 67260-0133, USA; Source Info: Apr2004, Vol. 129 Issue 1, p7; Author-Supplied Keyword: Battery thermal design data; Author-Supplied Keyword: Contact pressure; Author-Supplied Keyword: Electrode stack packaging; Author-Supplied Keyword: Li-ion cell electrode layers; Author-Supplied Keyword: Separator hot-spot; Author-Supplied Keyword: Temperature and pressure measurement; Author-Supplied Keyword: Thermal resistance; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jpowsour.2003.11.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12777597&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Campbell, Timothy J. AU - Shaaban, Aly H. AU - Holcomb, Franklin H. AU - Salavani, Reza AU - Binder, Michael J. T1 - JP-8 catalytic cracking for compact fuel processors JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2004/04/15/ VL - 129 IS - 1 M3 - Article SP - 81 SN - 03787753 AB - In processing heavier hydrocarbons such as military logistic fuels (JP-4, JP-5, JP-8, and JP-100), kerosene, gasoline, and diesel to produce hydrogen for fuel cell use, several issues arise. First, these fuels have high sulfur content, which can poison and deactivate components of the reforming process and the fuel cell stack; second, these fuels may contain non-volatile residue (NVR), up to 1.5 vol.%, which could potentially accumulate in a fuel processor; and third is the high coking potential of heavy hydrocarbons. Catalytic cracking of a distillate fuel prior to reforming can resolve these issues. Cracking using an appropriate catalyst can convert the various heavy organosulfur species in the fuel to lighter sulfur species such as hydrogen sulfide (H2S), facilitating subsequent sulfur adsorption on zinc oxide (ZnO). Cracking followed by separation of light cracked gas from heavies effectively eliminates non-volatile aromatic species. Catalytic cracking can also convert heavier hydrocarbons to lights (C1–C3) at high conversion, which reduces the potential for coke formation in the reforming process. In this study, two types of catalysts were compared for JP-8 cracking performance: commercially-available zeolite materials similar to catalysts formulated for fluidized catalytic cracking (FCC) processes, and a novel manganese/alumina catalyst, which was previously reported to provide high selectivity to lights and low coke yield. Experiments were designed to test each catalyst’s effectiveness under the high space velocity conditions necessary for use in compact, lightweight fuel processor systems. Cracking conversion results, as well as sulfur and hydrocarbon distributions in the light cracked gas, are presented for the two catalysts to provide a performance comparison. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - Catalytic cracking KW - Fuel cells KW - Fuel processors KW - JP-8 KW - Reforming N1 - Accession Number: 12777608; Campbell, Timothy J. 1; Email Address: tim.campbell@tyndall.af.mil Shaaban, Aly H. 1 Holcomb, Franklin H. 2 Salavani, Reza 3 Binder, Michael J. 2; Affiliation: 1: Applied Research Associates Inc., AFRL/MLQD, 139 Barnes Drive, Suite 2, Tyndall AFB, FL 32403-5323, USA 2: US Army Engineer Research and Development Center, Construction Engineering Research Laboratory, 2902 Newmark Drive, Champaign, IL 61822-1076, USA 3: US Air Force Research Laboratory, 139 Barnes Drive, Suite 2, Tyndall AFB, FL 32403-5323, USA; Source Info: Apr2004, Vol. 129 Issue 1, p81; Author-Supplied Keyword: Catalytic cracking; Author-Supplied Keyword: Fuel cells; Author-Supplied Keyword: Fuel processors; Author-Supplied Keyword: JP-8; Author-Supplied Keyword: Reforming; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.jpowsour.2003.11.022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12777608&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rogers, James V. AU - Siegel, Gayl L. AU - Pollard, Dan L. AU - Rooney, Aubrie D. AU - McDougal, James N. T1 - The cytotoxicity of volatile JP-8 jet fuel components in keratinocytes JO - Toxicology JF - Toxicology Y1 - 2004/04/15/ VL - 197 IS - 2 M3 - Article SP - 112 SN - 0300483X AB - In vitro models are being used to evaluate the toxic and irritating effects of JP-8, a kerosene-based jet fuel. JP-8 components are volatile, which makes in vitro studies difficult to evaluate dose–response relationships due to changes in chemical dosimetry caused by evaporation from the exposure medium. An in vitro approach testing volatile chemical toxicity that we have recently developed was used to evaluate the toxicity of the JP-8 components m-xylene, 1-methylnaphthalene (1-MN), and n-nonane in keratinocytes. Partition coefficients were measured and used to estimate the chemical concentration in the keratinocytes. The EC50 for m-xylene and 1-MN decreased significantly (P≤0.05) at 1, 2, and 4 h. For n-nonane, no significant decreases in the EC50 values were observed over time; marginal cytotoxicity of n-nonane in keratinocytes was observed at 1 h. Within 4 h, about 75–90% of each volatile chemical was observed to be lost from the exposure medium when tissues were exposed in unsealed 24-well plates. This decrease resulted in significantly higher medium chemical concentrations needed to obtain EC50 values when compared to tissues exposed in sealed vials. This study demonstrates that chemical evaporation during in vitro exposures can significantly affect toxicological endpoint measurements. Ultimately, relating target cell chemical concentration to cellular responses in vitro could be used in determining an equivalent external dose using a biologically-based mathematical model. [Copyright &y& Elsevier] AB - Copyright of Toxicology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JET planes -- Fuel KW - FLUIDS KW - FUNCTIONS (Mathematics) KW - KERATINOCYTES KW - In vitro KW - JP-8 KW - Keratinocyte KW - Skin N1 - Accession Number: 12378663; Rogers, James V. 1 Siegel, Gayl L. 2 Pollard, Dan L. 3 Rooney, Aubrie D. 2 McDougal, James N. 4; Email Address: james.mcdougal@wright.edu; Affiliation: 1: Geo-Centers, Inc., 2856 G. Street, Wright-Patterson AFB, OH 45433, USA 2: Air Force Research Laboratory (AFRL/HEST), 2856 G. Street, Wright-Patterson AFB, OH 45433, USA 3: ManTech Environmental Technology, Inc., 2856 G. Street, Wright-Patterson AFB, OH 45433, USA 4: Department of Pharmacology and Toxicology, School of Medicine, Wright State University, Dayton, OH 45435-0001, USA; Source Info: Apr2004, Vol. 197 Issue 2, p112; Subject Term: JET planes -- Fuel; Subject Term: FLUIDS; Subject Term: FUNCTIONS (Mathematics); Subject Term: KERATINOCYTES; Author-Supplied Keyword: In vitro; Author-Supplied Keyword: JP-8; Author-Supplied Keyword: Keratinocyte; Author-Supplied Keyword: Skin; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.tox.2003.12.011 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12378663&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Strzhemechny, Yuri M. AU - Mosbacker, Howard L. AU - Look, David C. AU - Reynolds, Donald C. AU - Litton, Cole W. AU - Garces, Nelson Y. AU - Giles, Nancy C. AU - Halliburton, Larry E. AU - Niki, Shigeru AU - Brillson, Leonard J. T1 - Remote hydrogen plasma doping of single crystal ZnO. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/04/05/ VL - 84 IS - 14 M3 - Article SP - 2545 EP - 2547 PB - American Institute of Physics SN - 00036951 AB - We demonstrate that remote plasma hydrogenation can increase electron concentrations in ZnO single crystals by more than an order of magnitude. We investigated the effects of this treatment on Hall concentration and mobility as well as on the bound exciton emission peak I4 for a variety of ZnO single crystals–bulk air annealed, Li doped, and epitaxially grown on sapphire. Hydrogen increases I4 intensity in conducting samples annealed at 500 and 600 °C and partially restores emission in the I4 range for Li-diffused ZnO. Hydrogenation increases carrier concentration significantly for the semi-insulating Li doped and epitaxial thin film samples. These results indicate a strong link between the incorporation of hydrogen, increased donor-bound exciton PL emission, and increased n-type conductivity. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROGEN plasmas KW - ZINC oxide KW - EPITAXY KW - SAPPHIRES KW - HYDROGEN KW - CRYSTALS N1 - Accession Number: 12715474; Strzhemechny, Yuri M. 1 Mosbacker, Howard L. 2 Look, David C. 3,4 Reynolds, Donald C. 4 Litton, Cole W. 4 Garces, Nelson Y. 5 Giles, Nancy C. 5 Halliburton, Larry E. 5 Niki, Shigeru 6 Brillson, Leonard J. 7; Affiliation: 1: Center for Materials Research, The Ohio State University, Columbus, Ohio 43210 2: Department of Physics, The Ohio State University, Columbus, Ohio 43210 3: Semiconductor Research Center, Wright State University, Dayton, Ohio 45435 4: Air Force Research Laboratory, AFRL/MLPS, Wright-Patterson Air Force Base, Ohio 45435 5: Department of Physics, West Virginia University, Morgantown, West Virginia 26506 6: AIST, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan 7: Department of Electrical Engineering, Department of Physics and Center for Materials Research, The Ohio State University, Columbus, Ohio 43210; Source Info: 4/5/2004, Vol. 84 Issue 14, p2545; Subject Term: HYDROGEN plasmas; Subject Term: ZINC oxide; Subject Term: EPITAXY; Subject Term: SAPPHIRES; Subject Term: HYDROGEN; Subject Term: CRYSTALS; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.1695440 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12715474&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Krasuski, Richard A. AU - Assar, Manish D. AU - Wang, Andrew AU - Kisslo, Katherine B. AU - Pierce, Cynthia AU - Harrison, J. Kevin AU - Bashore, Thomas M. T1 - Usefulness of percutaneous balloon mitral commissurotomy in preventing the development of atrial fibrillation in patients with mitral stenosis JO - American Journal of Cardiology JF - American Journal of Cardiology Y1 - 2004/04// VL - 93 IS - 7 M3 - Article SP - 936 SN - 00029149 AB - A prospective cohort of patients with mitral stenosis and no history of atrial arrhythmias showed no decrease in the incidence of atrial fibrillation (AF) after successful versus unsuccessful Inoue balloon percutaneous balloon mitral valve commissurotomy. Advanced age and left atrial dimension best predicted which patients developed AF during follow-up, whereas percutaneous balloon mitral valve commissurotomy procedural success and left atrial pressure reduction did not have an impact on incidence of AF. [Copyright &y& Elsevier] AB - Copyright of American Journal of Cardiology is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MITRAL stenosis KW - MITRAL valve -- Diseases KW - ARRHYTHMIA KW - SPLIT brain N1 - Accession Number: 12652199; Krasuski, Richard A. 1; Email Address: richard.krasuski@lackland.af.mil Assar, Manish D. 2 Wang, Andrew 3 Kisslo, Katherine B. 3 Pierce, Cynthia 3 Harrison, J. Kevin 3 Bashore, Thomas M. 3; Affiliation: 1: Division of Cardiology, Wilford Hall Medical Center, United States Air Force, Lackland AFB, Texas, USA 2: Division of Cardiology, Department of Medicine, Baylor University Medical Center, Waco, Texas, USA 3: Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA; Source Info: Apr2004, Vol. 93 Issue 7, p936; Subject Term: MITRAL stenosis; Subject Term: MITRAL valve -- Diseases; Subject Term: ARRHYTHMIA; Subject Term: SPLIT brain; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.amjcard.2003.12.041 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12652199&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Katta, V.R. AU - Meyer, T.R. AU - Brown, M.S. AU - Gord, J.R. AU - Roquemore, W.M. T1 - Extinction criterion for unsteady, opposing-jet diffusion flames JO - Combustion & Flame JF - Combustion & Flame Y1 - 2004/04// VL - 137 IS - 1/2 M3 - Article SP - 198 SN - 00102180 AB - Dynamic flames are known to survive at strain rates that are much higher than those associated with steady-state flames. A numerical and experimental investigation is performed to aid the understanding of the extinction process associated with unsteady flames. Spatially locked unsteady flames in an opposing-jet-flow burner are established and stretched by simultaneously driving one vortex from the air side and another from the fuel side. Changes in the structure of the flame during its interaction with the incoming vortices and with the instability-generated secondary vortices are investigated using a time-dependent computational-fluid-dynamics-with-chemistry (CFDC) code known as UNICORN (UNsteady Ignition and COmbustion with ReactioNs). The combustion process is simulated using a detailed-chemical-kinetics model that incorporates 13 species and 74 reactions. Slow-moving vortices produce a wrinkled but continuous flame, while fast-moving vortices create a locally quenched flame with its edge wrapped around the merged vortical structures. In an attempt to characterize the observed quenching process, five variables—namely, air-side, fuel-side, and stoichiometric strain rates and maximum and stoichiometric scalar dissipation rates—are investigated. It is found that these characteristic parameters cannot be used to describe the quenching process associated with unsteady flames. The flow and chemical nonequilibrium states associated with the unsteady flames are responsible for changes in the extinction values of these traditional characteristic variables. However, even though the quenching values of the scalar dissipation rates increase with the velocity of the incoming vortices, the variations are much smaller than those observed in the strain rates. It is proposed that a variable that is proportional to the air-side strain rate and inversely proportional to the rate of change in the flame temperature can be used to characterize the unsteady quenching process uniquely. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMBUSTION KW - DYNAMICS KW - MECHANICS (Physics) KW - FUEL KW - Diffusion flames KW - Extinction KW - Nonequilibrium flows KW - Turbulent flames KW - Unsteady flames KW - Vortex–flame interaction N1 - Accession Number: 12642974; Katta, V.R. 1; Email Address: vrkatta@erinet.com Meyer, T.R. 1 Brown, M.S. 1 Gord, J.R. 2 Roquemore, W.M. 2; Affiliation: 1: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Road, Dayton, OH 45440, USA 2: Air Force Research Laboratory, Propulsion Directorate, Wright–Patterson Air Force Base, OH 45433, USA; Source Info: Apr2004, Vol. 137 Issue 1/2, p198; Subject Term: COMBUSTION; Subject Term: DYNAMICS; Subject Term: MECHANICS (Physics); Subject Term: FUEL; Author-Supplied Keyword: Diffusion flames; Author-Supplied Keyword: Extinction; Author-Supplied Keyword: Nonequilibrium flows; Author-Supplied Keyword: Turbulent flames; Author-Supplied Keyword: Unsteady flames; Author-Supplied Keyword: Vortex–flame interaction; NAICS/Industry Codes: 454310 Fuel Dealers; NAICS/Industry Codes: 454319 Other fuel dealers; Number of Pages: 24p; Document Type: Article L3 - 10.1016/j.combustflame.2004.02.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12642974&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parrish, Christopher T1 - Wingless Eagle: U.S. Army Aviation Through World War I (Book). JO - H-Net Reviews in the Humanities & Social Sciences JF - H-Net Reviews in the Humanities & Social Sciences Y1 - 2004/04// M3 - Book Review SP - 1 EP - 3 SN - 15380661 AB - Reviews the book "Wingless Eagle: U.S. Army Aviation Through World War I," by Herbert A. Johnson. KW - AIR warfare KW - NONFICTION KW - JOHNSON, Herbert A. KW - WINGLESS Eagle (Book) N1 - Accession Number: 15081397; Parrish, Christopher 1; Affiliation: 1: United States Air Force; Source Info: Apr2004, p1; Subject Term: AIR warfare; Subject Term: NONFICTION; Reviews & Products: WINGLESS Eagle (Book); People: JOHNSON, Herbert A.; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15081397&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fuller, D.F. AU - Terzuoli, A.J. AU - Collins, P.J. AU - Williams, R. T1 - Approach to object classification using dispersive scattering centres. JO - IEE Proceedings -- Radar, Sonar & Navigation JF - IEE Proceedings -- Radar, Sonar & Navigation Y1 - 2004/04// VL - 151 IS - 2 M3 - Article SP - 85 EP - 90 PB - Institution of Engineering & Technology SN - 13502395 AB - The dispersive scattering centre (DSC) model characterises high-frequency backscatter from radar objects as a finite sum of localised scattering geometries distributed in range. These geometries, along with their locations, can be conveniently used as features in a one-dimensional automatic object recognition algorithm. The DSC model's type and range parameters correspond to geometry and distance features according to the geometric theory of diffraction (GTD). To demonstrate the viability of feature extraction based on the DSC model's range and type parameters, a typical object classification experiment was performed. The experimental data contained direct range radar measurements of four model fighter aircraft of similar size and shape at 0° elevation and 0°-30° azimuth. After implementing DSC model feature extraction on these data, a fully-connected two-layer neural net obtained over 98% classification accuracy. In addition, DSC model feature extraction gave an approximately 85% reduction in the number of required features when compared to the numerous range bin magnitudes used in template matching techniques. [ABSTRACT FROM AUTHOR] AB - Copyright of IEE Proceedings -- Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADAR in navigation KW - NAVIGATION (Aeronautics) KW - NAVIGATION KW - BACKSCATTERING KW - RADAR N1 - Accession Number: 12866574; Fuller, D.F. 1 Terzuoli, A.J. 2 Collins, P.J. 2 Williams, R. 3; Affiliation: 1: US Air Force Academy, Department of Electrical Engineering, CO, USA 2: US Air Force Institute of Technology, Department of Electrical and Computer Engineering, OH, USA 3: US Air Force Research Laboratory, RF Division, Wright-Patterson AFB, OH, USA; Source Info: Apr2004, Vol. 151 Issue 2, p85; Subject Term: RADAR in navigation; Subject Term: NAVIGATION (Aeronautics); Subject Term: NAVIGATION; Subject Term: BACKSCATTERING; Subject Term: RADAR; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12866574&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Koper, Eric M. AU - Wood, William D. AU - Schneider, Stephen W. T1 - Aircraft Antenna Coupling Minimization Using Genetic Algorithms and Approximations. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2004/04// VL - 40 IS - 2 M3 - Article SP - 742 EP - 751 SN - 00189251 AB - Genetic algorithms (GM) are used to minimize antenna coupling by optimally positioning multiple radiators. Initial GA parameters are selected using a simple cylindrical model, and the results are used to optimize antenna placement on a realistic aircraft surface model. A novel aggregate objective function incorporating surface wave coupling, variance of the coupling values, and radiation pattern analysis is used. Multiple computational and experimental data are shown to validate the methodology. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTENNAS (Electronics) KW - ELECTRONIC apparatus & appliances KW - COUPLINGS (Gearing) KW - MATHEMATICAL optimization KW - RADIATION KW - ALGORITHMS N1 - Accession Number: 14229701; Koper, Eric M. 1 Wood, William D. 1 Schneider, Stephen W. 2; Affiliation: 1: Air Force Institute of Technology Dept. of Electrical and Computer Engineering 2950 Hobson Way Wright-Patterson AFB, OH 45433. 2: Air Force Research Laboratory Sensors Directorate 2241 Avionics Circle Wright-Patterson AFB, OH 45433; Source Info: Apr2004, Vol. 40 Issue 2, p742; Subject Term: ANTENNAS (Electronics); Subject Term: ELECTRONIC apparatus & appliances; Subject Term: COUPLINGS (Gearing); Subject Term: MATHEMATICAL optimization; Subject Term: RADIATION; Subject Term: ALGORITHMS; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 333613 Mechanical Power Transmission Equipment Manufacturing; NAICS/Industry Codes: 333619 Other engine and power transmission equipment manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 811211 Consumer Electronics Repair and Maintenance; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14229701&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Xinwen Hu AU - Choi, Bo K. AU - Barnaby, Hugh J. AU - Fleetwood, Daniel M. AU - Schrimpf, Ronald D. AU - Lee, Sungchul AU - S. Shojah-Ardalan, Sungchul AU - Wilkins, R. AU - Mishra, Umesh K. AU - Dettmer, Ross W. T1 - The Energy Dependence of Proton-Induced Degradation in A1GaN/GaN High Electron Mobility Transistors. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2004/04// VL - 51 IS - 2 M3 - Article SP - 293 EP - 297 SN - 00189499 AB - The effects of proton irradiation at various energies are reported for AlGaN/GaN high electron mobility transistors (HEMTs). The devices exhibit little degradation when irradiated with 15-, 40-, and 105-MeV protons at fluences up to 1013 cm-2, and the damage completely recovers after annealing at room temperature. For 1.8-MeV proton irradiation, the drain saturation current decreases 10.6% and the maximum transconductance decreases 6.1% at a affluence of 1012 cm-2. The greater degradation measured at the lowest proton energy considered here is caused by the much larger nonionizing energy loss of the 1.8-MeV protons. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRON mobility KW - ENERGY-band theory of solids KW - FREE electron theory of metals KW - CONDUCTION band KW - IRRADIATION KW - NONIONIZING radiation N1 - Accession Number: 12991524; Xinwen Hu 1; Email Address: xhu@spang.com Choi, Bo K. 1 Barnaby, Hugh J. 2 Fleetwood, Daniel M. 1 Schrimpf, Ronald D. 1 Lee, Sungchul 1 S. Shojah-Ardalan, Sungchul 3 Wilkins, R. 3 Mishra, Umesh K. 4 Dettmer, Ross W. 5; Affiliation: 1: Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN 37235 USA. 2: Electrical and Computer Engineering Department, University of Arizona, Tucson, AZ 85721 USA. 3: NASA Center for Applied Radiation Research, Prairie View A&M University, Prairie View, TX 77446 USA. 4: Electrical and Computer Engineering Department, University of California, Santa Barbara, CA 93106 USA. 5: Air Force Research Laboratory (AFRL), Wright- Patterson AFB, OH 45433 USA.; Source Info: Apr2004, Vol. 51 Issue 2, p293; Subject Term: ELECTRON mobility; Subject Term: ENERGY-band theory of solids; Subject Term: FREE electron theory of metals; Subject Term: CONDUCTION band; Subject Term: IRRADIATION; Subject Term: NONIONIZING radiation; NAICS/Industry Codes: 334517 Irradiation Apparatus Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TNS.2004.825077 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12991524&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kuo, Spencer P. AU - Kossey, Paul AU - Huynh, James T. AU - Kuo, Steven S. T1 - Amplification of Whistler Waves for the Precipitation of Trapped Relativistic Electrons in the Magnetosphere. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/04//Apr2004 Part 1 of 3 VL - 32 IS - 2 M3 - Article SP - 362 EP - 369 SN - 00933813 AB - Energetic electrons trapped in the radiation belts undergo bounce motion about the geomagnetic equator. The behaviors of the trajectories of these electrons interacting with a large amplitude whistler wave are explored, with the electron energy and wave amplitude as variable parameters. A surface of section technique is used to examine the chaoticity of the system graphically. The wave amplitude required causing an electron trajectory to be- come chaotic decreases with increasing electron energy. Once the trajectory of an electron becomes chaotic, it can wander into the loss cone and subsequently precipitates into the ionosphere and/or the upper atmosphere. This chaotic scattering process requires a threshold field for the commencement of chaotic behavior in the electron trajectories. Therefore, a loss-cone negative mass instability process to amplify whistler waves by electrons in the bulk of the energy distribution is also studied. The numerical results show that the injected whistler waves can be amplified by more than 20 dB, agreeing with the experimental results. This amplification process reduces considerably the required field intensity of injected whistler wave for the purpose of precipitating those tail electrons in the megaelectronvolt range. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - ATOMS KW - MAGNETOSPHERE KW - UPPER atmosphere KW - GEOMAGNETISM KW - MAGNETISM N1 - Accession Number: 13836272; Kuo, Spencer P. 1 Kossey, Paul 2 Huynh, James T. 3 Kuo, Steven S. 4; Affiliation: 1: Department of Electrical and Computer Engineering, Polytechnic University, NY 11201 USA. 2: Air Force Research Laboratory, AFRL/VSBX, Hanscom AFB, MA 01731 USA. 3: Raytheon Space and Airborne Systems, El Segundo CA 90245 USA. 4: Northrop Grumman Space Technology, Redondo Beach, CA 90278 USA.; Source Info: Apr2004 Part 1 of 3, Vol. 32 Issue 2, p362; Subject Term: ELECTRONS; Subject Term: ATOMS; Subject Term: MAGNETOSPHERE; Subject Term: UPPER atmosphere; Subject Term: GEOMAGNETISM; Subject Term: MAGNETISM; Number of Pages: 8p; Document Type: Article L3 - 10.1109/TPS.2004.828459 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13836272&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maji, Arup K. AU - Wegner, Peter AU - Rochin, Refugio T1 - Surface Actuation of Lightweight Mirrors with Shape Memory Alloy. JO - Journal of Aerospace Engineering JF - Journal of Aerospace Engineering Y1 - 2004/04// VL - 17 IS - 2 M3 - Article SP - 83 EP - 89 PB - American Society of Civil Engineers SN - 08931321 AB - The ability to create lightweight mirrors that can maintain surface accuracy is a major technical challenge for future space telescopes. Processing-induced errors and surface errors due to temperature excursions and gravity sag (zero gravity in space) make it impossible to correct the surface of thin mirror face-sheets by conventional point actuators. The challenges are compounded by the requirements for mirrors to have adequate stiffness for pointing accuracy. An experimental and analytical study was conducted to explore the feasibility of correcting the shape of lightweight (≈1 kg/m2) mirrors using a “Nitinol” (nickel-titanium) shape memory alloy (SMA). Shape memory alloys are increasingly used as smart devices in aerospace applications. Their primary advantage over other smart materials (i.e., piezo-ceramics and piezo-polymers) is in their ability to undergo large strains and displacements and thus enable the development of smart mechanisms. Active shape correction is the only means of mitigating heat and zero-gravity-induced distortions in space-based optical imaging systems. The repeatability and reliability of a possible actuation system based on properties of the SMA wires were studied by testing the stress-strain and stress recovery behavior under controlled conditions. Embedded SMA wires were then used to actuate a composite beam, and the movement induced by actuation was monitored with the Moiré interferometry method. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerospace Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TELESCOPES KW - SHAPE memory alloys KW - ALLOYS KW - POLYMERS KW - STRAINS & stresses (Mechanics) KW - Composite materials KW - Shape memory effect KW - Telescopes N1 - Accession Number: 12525017; Maji, Arup K. 1; Email Address: amaji@unm.edu Wegner, Peter 2 Rochin, Refugio 3; Affiliation: 1: Professor, Dept. of Civil Engineering, Univ. of New Mexico, Albuquerque, NM 87131 2: Lead, Integrated Structural Systems Group, Air Force Research Laboratory, AFRL/VSSV, 3550 Aberdeen Ave., Albuquerque, NM 87117-5776. 3: Research Assistant, Univ. of New Mexico, Albuquerque, NM 87131; Source Info: Apr2004, Vol. 17 Issue 2, p83; Subject Term: TELESCOPES; Subject Term: SHAPE memory alloys; Subject Term: ALLOYS; Subject Term: POLYMERS; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: Composite materials; Author-Supplied Keyword: Shape memory effect; Author-Supplied Keyword: Telescopes; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 453999 All other miscellaneous store retailers (except beer and wine-making supplies stores); Number of Pages: 7p; Illustrations: 5 Black and White Photographs, 2 Diagrams, 3 Charts, 7 Graphs; Document Type: Article L3 - 10.1061/(ASCE)0893-1321(2004)17:2(83) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12525017&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wells, Mark K. AU - Vandervort, Bruce T1 - Plotting a True Course: Reflections on USAF Strategic Attack Theory and Doctrine, the Post-World War II Experience (Book). JO - Journal of Military History JF - Journal of Military History Y1 - 2004/04// VL - 68 IS - 2 M3 - Book Review SP - 659 EP - 660 SN - 08993718 AB - Reviews the book "Plotting a True Course: Reflections on USAF Strategic Attack Theory and Doctrine, the Post-World War II Experience," edited by David R. Mets and William P. Head. KW - MILITARY strategy KW - NONFICTION KW - METS, David R., 1928- KW - HEAD, William P. KW - PLOTTING a True Course: Reflections on USAF Strategic Attack Theory & Doctrine, the Post-World War II Experience (Book) N1 - Accession Number: 13227355; Wells, Mark K. 1 Vandervort, Bruce 2; Affiliation: 1: United States Air Force Academy, Colorado Springs, Colorado 2: Virginia Military Institute; Source Info: Apr2004, Vol. 68 Issue 2, p659; Subject Term: MILITARY strategy; Subject Term: NONFICTION; Reviews & Products: PLOTTING a True Course: Reflections on USAF Strategic Attack Theory & Doctrine, the Post-World War II Experience (Book); People: METS, David R., 1928-; People: HEAD, William P.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13227355&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maldoni, M. M. AU - Egan, M. P. AU - Robinson, G. AU - Smith, R. G. AU - Wright, C. M. T1 - The phase of H2O ice and the librational band in OH231.8+4.2: new interpretations. JO - Monthly Notices of the Royal Astronomical Society JF - Monthly Notices of the Royal Astronomical Society Y1 - 2004/04//4/1/2004 VL - 349 IS - 2 M3 - Article SP - 665 EP - 677 PB - Oxford University Press / USA SN - 00358711 AB - The phase of H2O ice and the librational ice band detected toward the post-asymptotic giant branch (post-AGB) star OH231.8+4.2 have been examined using radiative transfer modelling. The results indicate that the ice is largely crystalline and not amorphous as previously reported in the literature. The earlier result is shown to be due to the assumption of unrealistically thick ice mantles. It has also been shown that, in comparison with radiative transfer modelling, Mie theory modelling of the 3-μm ice band detected towards moderately optically thick shells leads to an underestimate of the ice mantle thickness. The modelling results also suggest that the mid-infrared (MIR) feature previously identified with the librational band of H2O ice could be the result of amorphous Al2O3. This dust component can also account for the observed enhanced opacity between the 10- and 18-μm silicate bands. [ABSTRACT FROM AUTHOR] AB - Copyright of Monthly Notices of the Royal Astronomical Society is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATIVE transfer KW - ASYMPTOTIC giant branch stars KW - CIRCUMSTELLAR matter KW - ICE sheets KW - BIPOLAR outflows (Astrophysics) KW - PROTO-planetary nebulae KW - circumstellar matter KW - dust, extinction KW - infrared: stars KW - radiative transfer KW - stars: agb and post-agb KW - stars: individual: oh2318+4.2 N1 - Accession Number: 12627937; Maldoni, M. M. 1; Email Address: m.maldoni@adfa.edu.au Egan, M. P. 2 Robinson, G. 1 Smith, R. G. 1 Wright, C. M. 1; Affiliation: 1: School of Physics, Australian Defence Force Academy, Canberra ACT 2600, Australia 2: Air Force Research Laboratory, MDA/AS, 7100 Defense Pentagon, Washington 20301-7100, DC, USA; Source Info: 4/1/2004, Vol. 349 Issue 2, p665; Subject Term: RADIATIVE transfer; Subject Term: ASYMPTOTIC giant branch stars; Subject Term: CIRCUMSTELLAR matter; Subject Term: ICE sheets; Subject Term: BIPOLAR outflows (Astrophysics); Subject Term: PROTO-planetary nebulae; Author-Supplied Keyword: circumstellar matter; Author-Supplied Keyword: dust, extinction; Author-Supplied Keyword: infrared: stars; Author-Supplied Keyword: radiative transfer; Author-Supplied Keyword: stars: agb and post-agb; Author-Supplied Keyword: stars: individual: oh2318+4.2; Number of Pages: 13p; Document Type: Article L3 - 10.1111/j.1365-2966.2004.07532.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12627937&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shiffler, D. AU - Heggemeier, J. AU - LaCour, M. AU - Golby, K. AU - Ruebush, M. T1 - Low level plasma formation in a carbon velvet cesium iodide coated cathode. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2004/04// VL - 11 IS - 4 M3 - Article SP - 1680 EP - 1684 PB - American Institute of Physics SN - 1070664X AB - Field emission cathodes have been a subject of research for many years. These cathodes hold the promise of effective electron emission in the absence of a heater. Such devices find application in the high power microwave (HPM) arena, as well as the conventional microwave industry and other areas such as flat panel displays. Over the past several years the Air Force Research Laboratory began to focus on cesium iodide cathodes as a field emission cathode of some interest. Previously reported results demonstrated a cesium iodide coated carbon velvet cathode capable of over one million pulses of operation with no degradation of emission. However, the exact emission mechanism remains somewhat unclear. This paper presents results showing that plasma formation on the cathode surface remains minimal at 1 μs pulse lengths. While ionized cesium and iodine lines exist in the light spectrum from the diode, these lines remain quite small, with the fluorescent emission from solid cesium iodide dominating the optical spectra in the diode. Hence, we propose that the cesium iodide coated carbon velvet operates in a space charge limited regime with pure field emission alone. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIELD emission cathodes KW - CESIUM iodide KW - CATHODES KW - CARBON KW - ELECTRON emission KW - HIGH power lasers N1 - Accession Number: 12952515; Shiffler, D. 1 Heggemeier, J. 1 LaCour, M. 1 Golby, K. 1 Ruebush, M. 1; Affiliation: 1: U. S. Air Force Research, Laboratory, AFRI/DEHP, 3550 Aberdeen Avenue SE, Kirtland AFB, New Mexico 87107.; Source Info: Apr2004, Vol. 11 Issue 4, p1680; Subject Term: FIELD emission cathodes; Subject Term: CESIUM iodide; Subject Term: CATHODES; Subject Term: CARBON; Subject Term: ELECTRON emission; Subject Term: HIGH power lasers; Number of Pages: 5p; Document Type: Article L3 - 10.1063/1.1666571 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12952515&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rothwell, Payk L. T1 - Response to “Comment on ‘The superposition of rotating and stationary magnetic sources: Implications for the auroral region’ ” [Phys. Plasmas 11, 1738 (2004)]. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2004/04// VL - 11 IS - 4 M3 - Article SP - 1740 EP - 1743 PB - American Institute of Physics SN - 1070664X AB - Vasyliunas [Phys. Plasmas 11, 1738 (2004)] claims that the co-rotation electric field must be derived from the generalized Ohm's law to he physically correct. However, laboratory results show that the rotation of a magnetic source produces electric fields without a plasma being present. With a plasma present these electric fields, which can he explained by Faraday's law and the transformation of the electromagnetic field between reference frames [Phys. Plasmas 10, 2971 (2003)], from the co-rotation electric field. Therefore, a magnetohydrodynamic approach, as argued by Vasyliunas, is not required to derive the co-rotation electric field. In this Response the relevant laboratory experiments will he described in more detail, as well as their application to the Earth's co-rotation electric field. Also, it is suggested that plasma neutrality and the inertia of the co-rotating plasma maintain E‖ ≠0. In resjxnse to a second round of communications, the applicability of a paper by Schiff [Proc. NatI. Acad. Sci. 25, 391 (1939)] is discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERPOSITION principle (Physics) KW - PHYSICS KW - MAGNETIC fields KW - AURORAL electrons KW - COLLISIONLESS plasmas KW - ELECTRIC fields N1 - Accession Number: 12952502; Rothwell, Payk L. 1; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731.; Source Info: Apr2004, Vol. 11 Issue 4, p1740; Subject Term: SUPERPOSITION principle (Physics); Subject Term: PHYSICS; Subject Term: MAGNETIC fields; Subject Term: AURORAL electrons; Subject Term: COLLISIONLESS plasmas; Subject Term: ELECTRIC fields; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.1667493 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12952502&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shaw, L. AU - Luo, H. AU - Villegas, J. AU - Miracle, D. T1 - Compressive behavior of an extruded nanocrystalline Al–Fe–Cr–Ti alloy JO - Scripta Materialia JF - Scripta Materialia Y1 - 2004/04// VL - 50 IS - 7 M3 - Article SP - 921 SN - 13596462 AB - The investigation of the compressive behavior of an extruded nanocrystalline Al–Fe–Cr–Ti alloy reveals that the ductility of the alloy is determined by the status of the oxide film at the prior powder particle boundaries. When properly extruded, the alloy exhibits more than −0.45 compressive strain at 25 °C coupled with superior specific strengths up to 400 °C. The enhanced strength is attributed to grain refinement, intermetallic precipitation, and solid solution. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOCRYSTALS KW - DUCTILITY KW - SOLID solutions KW - PRECIPITATION hardening KW - Aluminum alloys KW - Extrusion KW - Mechanical alloying KW - Mechanical properties KW - Nanostructure N1 - Accession Number: 12168231; Shaw, L. 1; Email Address: lshaw@mail.ims.uconn.edu Luo, H. 1 Villegas, J. 1 Miracle, D. 2; Affiliation: 1: Department of Metallurgy and Materials Engineering, University of Connecticut, U-3136, Storrs, CT 06269, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH, USA; Source Info: Apr2004, Vol. 50 Issue 7, p921; Subject Term: NANOCRYSTALS; Subject Term: DUCTILITY; Subject Term: SOLID solutions; Subject Term: PRECIPITATION hardening; Author-Supplied Keyword: Aluminum alloys; Author-Supplied Keyword: Extrusion; Author-Supplied Keyword: Mechanical alloying; Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Nanostructure; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.scriptamat.2004.01.021 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12168231&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhu, Aiwu AU - Shiflet, Gary J. AU - Miracle, Daniel B. T1 - Glass forming ranges of Al–rare earth metal alloys: thermodynamic and kinetic analysis JO - Scripta Materialia JF - Scripta Materialia Y1 - 2004/04// VL - 50 IS - 7 M3 - Article SP - 987 SN - 13596462 AB - Using CALPHAD databases, chemical short-range ordering is analyzed and related to metastability of undercooled melts of Al–rare earth metals (including Ce, Gd, Nd and Y). A quasi-kinetic analysis of the primary crystallizations predicts the best glass forming ranges for the quenched alloys, in agreement with those experimentally determined. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RARE earth metals KW - THERMODYNAMICS KW - CRYSTALLIZATION KW - METALS -- Quenching KW - CALPHAD KW - Kinetics KW - Metallic glasses KW - Short-range ordering N1 - Accession Number: 12168244; Zhu, Aiwu 1,2; Email Address: awzhu@virginia.edu Shiflet, Gary J. 2 Miracle, Daniel B. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Dayton, OH 45433, USA 2: Department of Materials Science and Engineering, University of Virginia, 116 Engineers Way, Charlottesville, VA 22904, USA; Source Info: Apr2004, Vol. 50 Issue 7, p987; Subject Term: RARE earth metals; Subject Term: THERMODYNAMICS; Subject Term: CRYSTALLIZATION; Subject Term: METALS -- Quenching; Author-Supplied Keyword: CALPHAD; Author-Supplied Keyword: Kinetics; Author-Supplied Keyword: Metallic glasses; Author-Supplied Keyword: Short-range ordering; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.scriptamat.2004.01.019 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12168244&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shen, C. AU - Chen, Q. AU - Wen, Y.H. AU - Simmons, J.P. AU - Wang, Y. T1 - Increasing length scale of quantitative phase field modeling of growth-dominant or coarsening-dominant process JO - Scripta Materialia JF - Scripta Materialia Y1 - 2004/04// VL - 50 IS - 7 M3 - Article SP - 1023 SN - 13596462 AB - The length scale in quantitative phase field modeling with material-specific parameters as inputs is determined by the actual interface thickness. Using three examples, we demonstrate that for individual processes such as growth or coarsening, one can always diffuse the interface and hence increase the simulation length scale by adjusting certain parameters in the model without altering the kinetics. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OSTWALD ripening KW - DYNAMICS KW - DIFFUSION KW - SIMULATION methods & models KW - Coarsening KW - Length scale KW - Phase field KW - Precipitate growth KW - Quantitative modeling N1 - Accession Number: 12168251; Shen, C. 1 Chen, Q. 1 Wen, Y.H. 2 Simmons, J.P. 3 Wang, Y. 1; Email Address: wang.363@osu.edu; Affiliation: 1: Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH 43210, USA 2: UES, Inc., Dayton, OH 45432, USA 3: Air Force Research Laboratory, AFRL/MLLM, Wright-Patterson AFB, OH 45433, USA; Source Info: Apr2004, Vol. 50 Issue 7, p1023; Subject Term: OSTWALD ripening; Subject Term: DYNAMICS; Subject Term: DIFFUSION; Subject Term: SIMULATION methods & models; Author-Supplied Keyword: Coarsening; Author-Supplied Keyword: Length scale; Author-Supplied Keyword: Phase field; Author-Supplied Keyword: Precipitate growth; Author-Supplied Keyword: Quantitative modeling; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.scriptamat.2003.12.029 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12168251&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shen, C. AU - Chen, Q. AU - Wen, Y.H. AU - Simmons, J.P. AU - Wang, Y. T1 - Increasing length scale of quantitative phase field modeling of concurrent growth and coarsening processes JO - Scripta Materialia JF - Scripta Materialia Y1 - 2004/04// VL - 50 IS - 7 M3 - Article SP - 1029 SN - 13596462 AB - We present an approach for increasing the length scale of quantitative phase field modeling of concurrent growth and coarsening processes with neither growth nor coarsening kinetics altered. We modify locally the free energy hump between the two equilibrium phases, which determines interface thickness, while keeping the driving forces for growth and coarsening unchanged. The approach is applied to precipitate growth and coarsening in a binary Ni–Al alloy. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL crystals -- Growth KW - OSTWALD ripening KW - BINARY metallic systems KW - EQUILIBRIUM KW - Growth and coarsening KW - Length scale KW - Ni–Al KW - Phase field KW - Quantitative modeling N1 - Accession Number: 12168252; Shen, C. 1 Chen, Q. 1 Wen, Y.H. 2 Simmons, J.P. 3 Wang, Y. 1; Email Address: wang.363@osu.edu; Affiliation: 1: Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH 43210, USA 2: UES, Inc., Dayton, OH 45432, USA 3: Air Force Research Laboratory, AFRL/MLLM, Wright-Patterson AFB, OH 45433, USA; Source Info: Apr2004, Vol. 50 Issue 7, p1029; Subject Term: METAL crystals -- Growth; Subject Term: OSTWALD ripening; Subject Term: BINARY metallic systems; Subject Term: EQUILIBRIUM; Author-Supplied Keyword: Growth and coarsening; Author-Supplied Keyword: Length scale; Author-Supplied Keyword: Ni–Al; Author-Supplied Keyword: Phase field; Author-Supplied Keyword: Quantitative modeling; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.scriptamat.2003.12.027 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12168252&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ashcroft, Bruce T1 - Camp Kenedy, Texas (Book). JO - Southwestern Historical Quarterly JF - Southwestern Historical Quarterly Y1 - 2004/04// VL - 107 IS - 4 M3 - Book Review SP - 626 EP - 627 SN - 0038478X AB - Reviews the book "Camp Kenedy, Texas," by Robert H. Thonhoff. KW - HISTORY KW - NONFICTION KW - THONHOFF, Robert H. KW - CAMP Kenedy, Texas (Book) N1 - Accession Number: 13205946; Ashcroft, Bruce 1; Affiliation: 1: Air Education and Training Command History Office, San Antonio; Source Info: Apr2004, Vol. 107 Issue 4, p626; Subject Term: HISTORY; Subject Term: NONFICTION; Reviews & Products: CAMP Kenedy, Texas (Book); People: THONHOFF, Robert H.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13205946&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Iroh, J. O. AU - Levine, K. AU - Shah, K. AU - Zhu, Y. AU - Donley, M. AU - Mantz, R. AU - Johnson, J. AU - Voevodin, N. N. AU - Balbyshev, V. N. AU - Khramov, A. N. T1 - Electrochemical Behaviour of Conducting Polymer/Polyimide Composite. JO - Surface Engineering JF - Surface Engineering Y1 - 2004/04// VL - 20 IS - 2 M3 - Article SP - 93 EP - 98 PB - Taylor & Francis Ltd SN - 02670844 AB - Two types of conducting polymer composites comprising polypyrrole (PPy) (filler) dispersed in a polyimide (PI) (matrix) and bilayered conducting polymer/PI composites, were successfully formulated. Electrochemical deposition of the PPy/PI composite was accomplished by initially depositing PPy onto the working electrode, and then casting a layer of PI onto the modified electrode. The PPy/PI composite was also formulated by first casting a PI film onto the bare electrode followed by electrochemical deposition of PPy. Poly(N-ethylaniline)/ PI composites were prepared by initially depositing a thin layer of poly(N-ethylaniline) onto the substrate (AA 2024-T3) and then casting a layer of PI resin onto the modified substrate. The composite coatings were characterised by advanced analytical techniques, such as reflection absorption infrared spectroscopy (RAIR), SEM, dc polarisation studies and electrochemical impedance spectroscopy. SE/S275 [ABSTRACT FROM AUTHOR] AB - Copyright of Surface Engineering is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROCHEMICAL analysis KW - POLYMERS KW - POLYIMIDES KW - ELECTRODES KW - ETHYLANILINE KW - INFRARED spectroscopy KW - IR spectroscopy KW - POLYIMIDE KW - Polymer composites KW - Polypyrrole KW - Reflection absorption N1 - Accession Number: 13064024; Iroh, J. O. 1; Email Address: Jude.iroh@uc.edu Levine, K. 1 Shah, K. 1 Zhu, Y. 1 Donley, M. 2 Mantz, R. 2 Johnson, J. 2 Voevodin, N. N. 3 Balbyshev, V. N. 4 Khramov, A. N. 4; Affiliation: 1: Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, OH 54221-0012, USA. 2: Non-Metallic Division, Manufacturing and Materials Directorate, Air Force Research Laboratory, AFRL, Wright Patterson Air Force Base, WPAFB, Wrightpatterson, OH 45433-40, USA. 3: University of Dayton Research Institute, 300 College park, Dayton, OH 45469-0168. 4: Universal Technology Corp., 1270 N. Fairfield Rd., Dayton, OH 45432-2600, USA.; Source Info: Apr2004, Vol. 20 Issue 2, p93; Subject Term: ELECTROCHEMICAL analysis; Subject Term: POLYMERS; Subject Term: POLYIMIDES; Subject Term: ELECTRODES; Subject Term: ETHYLANILINE; Subject Term: INFRARED spectroscopy; Author-Supplied Keyword: IR spectroscopy; Author-Supplied Keyword: POLYIMIDE; Author-Supplied Keyword: Polymer composites; Author-Supplied Keyword: Polypyrrole; Author-Supplied Keyword: Reflection absorption; Number of Pages: 6p; Document Type: Article L3 - 10.1179/026708404225010667 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13064024&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Frazier, John M. T1 - A theoretical model for simulating the outcome of mechanism based in vitro toxicity testing strategies JO - Toxicology in Vitro JF - Toxicology in Vitro Y1 - 2004/04// VL - 18 IS - 2 M3 - Article SP - 171 SN - 08872333 AB - In order to investigate the fundamental principles that influence the optimal selection of toxicity test methods for the evaluation of chemical hazards, it is useful to have a design model to explore possible alternative testing strategies. In general, our lack of detailed knowledge of the mechanisms of toxicity (including not only the early events in the interaction of chemicals with biological systems, but the sequence of events that lead to experimentally measurable toxicity) limits the development of realistic dynamic models of the toxicological process for individual chemicals. We report here the development of a theoretical model that includes two independent hypothetical mechanisms of toxicity. The mechanisms are designed to be qualitatively similar to known mechanisms of action. The model is exercised to simulate the experimental data that would be obtained for a collection of “test” and “validation” chemicals using a single or a combination of two toxicity tests. The data generated are used to evaluate the “relevance” of the testing strategy based on the two proposed in vitro toxicity tests. [Copyright &y& Elsevier] AB - Copyright of Toxicology in Vitro is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TOXICITY testing -- In vitro KW - EXPERIMENTAL toxicology KW - POISONS KW - ANALYTICAL chemistry KW - TOXICITY testing KW - Biologically based modeling KW - Mechanistic toxicology KW - Test validation KW - Toxicity testing N1 - Accession Number: 12038572; Frazier, John M. 1; Email Address: john.frazier@wpafb.af.mil; Affiliation: 1: Operational Toxicology Branch, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7400, USA; Source Info: Apr2004, Vol. 18 Issue 2, p171; Subject Term: TOXICITY testing -- In vitro; Subject Term: EXPERIMENTAL toxicology; Subject Term: POISONS; Subject Term: ANALYTICAL chemistry; Subject Term: TOXICITY testing; Author-Supplied Keyword: Biologically based modeling; Author-Supplied Keyword: Mechanistic toxicology; Author-Supplied Keyword: Test validation; Author-Supplied Keyword: Toxicity testing; NAICS/Industry Codes: 325413 In-Vitro Diagnostic Substance Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/S0887-2333(03)00144-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12038572&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Larson, C. William AU - Mead Jr., Fanklin B. AU - Knecht, Sean D. T1 - Laser Propulsion and the Constant Momentum Mission. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/03/30/ VL - 702 IS - 1 M3 - Article SP - 216 EP - 227 PB - American Institute of Physics SN - 0094243X AB - We show that perfect propulsion requires a constant momentum mission, as a consequence of Newton’s second law. Perfect propulsion occurs when the velocity of the propelled mass in the inertial frame of reference matches the velocity of the propellant jet in the rocket frame of reference. We compare constant momentum to constant specific impulse propulsion, which, for a given specification of the mission delta V, has an optimum specific impulse that maximizes the propelled mass per unit jet kinetic energy investment. We also describe findings of more than 50 % efficiency for conversion of laser energy into jet kinetic energy by ablation of solids. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - PROPULSION systems KW - LASER ablation KW - ENGINEERING systems KW - LASERS -- Industrial applications KW - RESEARCH N1 - Accession Number: 12817417; Larson, C. William 1 Mead Jr., Fanklin B. 1 Knecht, Sean D. 1; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, Edwards AFB, USA; Source Info: 2004, Vol. 702 Issue 1, p216; Subject Term: LASERS; Subject Term: PROPULSION systems; Subject Term: LASER ablation; Subject Term: ENGINEERING systems; Subject Term: LASERS -- Industrial applications; Subject Term: RESEARCH; Number of Pages: 12p; Document Type: Article L3 - 10.1063/1.1721002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12817417&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fronig, H. David AU - Pike, Alan AU - McKinney, Leon AU - Mead Jr., Franklin B. AU - Larson, C. William T1 - Study to Determine the Effectiveness and Cost of A Laser-Powered “Lightcraft” Vehicle System—Results to Guide Future Developments. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/03/30/ VL - 702 IS - 1 M3 - Article SP - 242 EP - 250 PB - American Institute of Physics SN - 0094243X AB - Laser-powered lightcraft systems that deliver microsatellites to low earth orbit have been studied for the Air Force Research Laboratory. One result of this Study has been discovery of the significant influence of laser wavelength on the power lost during laser beam propagation through Earth’s atmosphere and in space. Here, energy and power losses in the laser beam are extremely sensitive to wavelength for earth-to-orbit missions. And this significantly affects the amount of mass that can be placed into orbit for a given maximum amount of radiated power from a ground-based laser. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - ARTIFICIAL satellites KW - HEAT exchangers KW - LASERS -- Industrial applications KW - SPACE vehicles KW - LASER beams N1 - Accession Number: 12817415; Fronig, H. David 1 Pike, Alan 2 McKinney, Leon 3 Mead Jr., Franklin B. 4 Larson, C. William 4; Affiliation: 1: Flight Unlimited, Flagstaff, AZ, USA 2: Defense Strategies & Systems, Inc., Gret Falls, VA, USA 3: McKinney Associates, Town & Country, MO, USA 4: Air Force Research Laboratory, Edwards AFB, USA; Source Info: 2004, Vol. 702 Issue 1, p242; Subject Term: LASERS; Subject Term: ARTIFICIAL satellites; Subject Term: HEAT exchangers; Subject Term: LASERS -- Industrial applications; Subject Term: SPACE vehicles; Subject Term: LASER beams; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 332410 Power Boiler and Heat Exchanger Manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1063/1.1721004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12817415&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiang, J. AU - Mi, K. AU - Tsao, S. AU - Zhang, W. AU - Lim, H. AU - O'Sullivan, T. AU - Sills, T. AU - Razeghi, M. AU - Brown, G.J. AU - Tidrow, M.Z. T1 - Demonstration of a 256×256 middle-wavelength infrared focal plane array based on InGaAs/InGaP quantum dot infrared photodetectors. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/03/29/ VL - 84 IS - 13 M3 - Article SP - 2232 EP - 2234 PB - American Institute of Physics SN - 00036951 AB - We report a demonstration of an infrared focal plane array based on InGaAs/InGaP quantum dot infrared photodetectors. The middle-wavelength infrared quantum-dot infrared photodetector (QDIP) structure was grown via low-pressure metal organic chemical vapor deposition. A detectivity of 3.6×10[sup 10] cm Hz[sup 1/2]/W was achieved at T=95 K and a bias of -1.4 V. The background limited temperature of our QDIP was 140 K with a 45° field of view. A 256×256 detector array was fabricated with dry etching, and hybridized to a Litton readout chip by indium bumps. Thermal imaging was achieved at temperatures up to 120 K. At T=77 K, the noise equivalent temperature difference was measured as 0.509 K with a 300 K background and f/2.3 optics. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM dots KW - DETECTORS KW - INDIUM compounds KW - GALLIUM arsenide KW - INFRARED radiation KW - GALLIUM compounds N1 - Accession Number: 12606889; Jiang, J. 1 Mi, K. 1 Tsao, S. 1 Zhang, W. 1 Lim, H. 1 O'Sullivan, T. 1 Sills, T. 1 Razeghi, M. 1; Email Address: razeghi@ece.northwestern.edu Brown, G.J. 2 Tidrow, M.Z. 3; Affiliation: 1: Center for Quantum Devices Department of Electrical and Computer Engineering, Northwestern University 2: Air Force Research Laboratory Materials & Manufacturing Directorate 3: Missile Defense Agency; Source Info: 3/29/2004, Vol. 84 Issue 13, p2232; Subject Term: QUANTUM dots; Subject Term: DETECTORS; Subject Term: INDIUM compounds; Subject Term: GALLIUM arsenide; Subject Term: INFRARED radiation; Subject Term: GALLIUM compounds; Number of Pages: 3p; Illustrations: 1 Black and White Photograph, 2 Graphs; Document Type: Article L3 - 10.1063/1.1688000 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12606889&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiang, J. AU - Tsao, S. AU - O'Sullivan, T. AU - Zhang, W. AU - Lim, H. AU - Sills, T. AU - Mi, K. AU - Razeghi, M. AU - Brown, G. J. AU - Tidrow, M. Z. T1 - High detectivity InGaAs/InGaP quantum-dot infrared photodetectors grown by low pressure metalorganic chemical vapor deposition. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/03/22/ VL - 84 IS - 12 M3 - Article SP - 2166 EP - 2168 PB - American Institute of Physics SN - 00036951 AB - We report a high detectivity middle-wavelength infrared quantum dot infrared photodetector (QDIP). The InGaAs quantum dots were grown by self-assembly on an InGaP matrix via low pressure metalorganic chemical vapor deposition. Photoresponse was observed at temperatures above 200 K with a peak wavelength of 4.7 μm and cutoff wavelength of 5.2 μm. The background limited performance temperature was 140 K, and this was attributed to the super low dark current observed in this QDIP. A detectivity of 3.6×10[sup 10] cm Hz[sup 1/2]/W, which is comparable to the state-of-the-art quantum well infrared photodetectors in a similar wavelength range, was obtained for this InGaAs/InGaP QDIP at both T=77 K and T=95 K at biases of -1.6 and -1.4 V, respectively. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOW pressure (Science) KW - CHEMICAL vapor deposition KW - MOLECULAR beam epitaxy KW - QUANTUM wells KW - SPECTRAL sensitivity KW - ELECTRIC fields N1 - Accession Number: 12530477; Jiang, J. 1 Tsao, S. 1 O'Sullivan, T. 1 Zhang, W. 1 Lim, H. 1 Sills, T. 1 Mi, K. 1 Razeghi, M. 1; Email Address: razeghi@ece.northwestern.edu Brown, G. J. 2 Tidrow, M. Z. 3; Affiliation: 1: Center for Quantum Devices, Northwestern University, Evanston, Illinois 60208 Department of Electrical and Computer Engineering, Northwestern University, Evanston, Illinois 30208 2: Air Force Research Laboratory, Materials & Manufacturing Directorate, AFRL/MLPS, Wright-Patterson AFB, Ohio 45433-7707 3: Missile Defense Agency, 7100 Defense Pentagon, Washington, DC 20301; Source Info: 3/22/2004, Vol. 84 Issue 12, p2166; Subject Term: LOW pressure (Science); Subject Term: CHEMICAL vapor deposition; Subject Term: MOLECULAR beam epitaxy; Subject Term: QUANTUM wells; Subject Term: SPECTRAL sensitivity; Subject Term: ELECTRIC fields; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.1688982 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12530477&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brooks, Gregory P. AU - Powers, Joseph M. T1 - A Karhunen–Loe`ve least-squares technique for optimization of geometry of a blunt body in supersonic flow JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2004/03/20/ VL - 195 IS - 1 M3 - Article SP - 387 SN - 00219991 AB - A novel Karhunen–Loe`ve (KL) least-squares model for the supersonic flow of an inviscid, calorically perfect ideal gas about an axisymmetric blunt body employing shock-fitting is developed; the KL least-squares model is used to accurately select an optimal configuration which minimizes drag. Accuracy and efficiency of the KL method is compared to a pseudospectral method employing global Lagrange interpolating polynomials. KL modes are derived from pseudospectral solutions at Mach 3.5 from a uniform sampling of the design space and subsequently employed as the trial functions for a least-squares method of weighted residuals. Results are presented showing the high accuracy of the method with less than 10 KL modes. Close agreement is found between the optimal geometry found using the KL model to that found from the pseudospectral solver. Not including the cost of sampling the design space and building the KL model, the KL least-squares method requires less than half the central processing unit time as the pseudospectral method to achieve the same level of accuracy. A decrease in computational cost of several orders of magnitude as reported in the literature when comparing the KL method against discrete solvers is shown not to hold for the current problem. The efficiency is lost because the nature of the nonlinearity renders a priori evaluation of certain necessary integrals impossible, requiring as a consequence many costly reevaluations of the integrals. [Copyright &y& Elsevier] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEAST squares KW - POLYNOMIALS KW - LAGRANGE equations KW - DIFFERENTIAL equations KW - Euler equations KW - Karhunen–Loève KW - Least-squares KW - Optimal design KW - Pseudospectral method KW - Shock-fitting N1 - Accession Number: 12382848; Brooks, Gregory P. 1; Email Address: Gregory.Brooks@wpafb.af.mil Powers, Joseph M. 2; Email Address: powers@nd.edu; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA 2: Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, IN 46556-5637, USA; Source Info: Mar2004, Vol. 195 Issue 1, p387; Subject Term: LEAST squares; Subject Term: POLYNOMIALS; Subject Term: LAGRANGE equations; Subject Term: DIFFERENTIAL equations; Author-Supplied Keyword: Euler equations; Author-Supplied Keyword: Karhunen–Loève; Author-Supplied Keyword: Least-squares; Author-Supplied Keyword: Optimal design; Author-Supplied Keyword: Pseudospectral method; Author-Supplied Keyword: Shock-fitting; Number of Pages: 26p; Document Type: Article L3 - 10.1016/j.jcp.2003.08.030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12382848&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Moore, Rick A. AU - Berner, Eta S. T1 - Assessing graduate programs for healthcare information management/technology (HIM/T) executives JO - International Journal of Medical Informatics JF - International Journal of Medical Informatics Y1 - 2004/03/18/ VL - 73 IS - 2 M3 - Article SP - 195 SN - 13865056 AB - This paper describes a methodology to assess health/medical informatics graduate-level education curricula. The authors used the Certified Professional in Healthcare Information Management Systems (CPHIMS) exam objectives published by the Healthcare Information and Management Systems Society (HIMSS) as the basis for their assessment. The authors compared the 69 CPHIMS exam objectives against four health/medical informatics program course objectives as stated in the selected program’s online graduate catalog. Results showed that the two programs with management as a focus addressed the majority (67 and 59%) of the CPHIMS objectives within core and elective courses combined. Overall, the other two programs addressed closer to a third of the CPHIMS objectives (36 and 32%). This methodology could prove to be useful in assisting students interested in graduate-level training programs with a tool by which to measure the congruence of the curricula of different programs with the mission of the programs and with their own professional interests. [Copyright &y& Elsevier] AB - Copyright of International Journal of Medical Informatics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MEDICAL informatics KW - CURRICULUM-based assessment KW - CURRICULA (Courses of study) KW - METHODOLOGY KW - INFORMATION resources management KW - Chief information officers (CIO) KW - Curriculum KW - Evaluation KW - Graduate education KW - Health informatics KW - Professional certification N1 - Accession Number: 12747052; Moore, Rick A. 1,2 Berner, Eta S. 1; Affiliation: 1: The University of Alabama at Birmingham, Birmingham, AL, USA 2: The United States Air Force, Birmingham, AL, USA; Source Info: Mar2004, Vol. 73 Issue 2, p195; Subject Term: MEDICAL informatics; Subject Term: CURRICULUM-based assessment; Subject Term: CURRICULA (Courses of study); Subject Term: METHODOLOGY; Subject Term: INFORMATION resources management; Author-Supplied Keyword: Chief information officers (CIO); Author-Supplied Keyword: Curriculum; Author-Supplied Keyword: Evaluation; Author-Supplied Keyword: Graduate education; Author-Supplied Keyword: Health informatics; Author-Supplied Keyword: Professional certification; NAICS/Industry Codes: 519190 All Other Information Services; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijmedinf.2003.12.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12747052&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anwar, A.F.M. AU - Islam, Syed S. AU - Webster, Richard T. T1 - Carrier trapping and current collapse mechanism in GaN metal–semiconductor field-effect transistors. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/03/15/ VL - 84 IS - 11 M3 - Article SP - 1970 EP - 1972 PB - American Institute of Physics SN - 00036951 AB - A mechanism for current collapse in GaN metal–semiconductor field-effect transistors is proposed, which assumes the existence of acceptor traps with multiple states in the band gap. Current collapse has been experimentally observed in the current–voltage characteristic after the drain voltage sweep had exceeded the threshold for impact ionization in a previous measurement. In the proposed model, electrons generated by impact ionization are captured by neutral acceptor trap states in the substrate located above the valence band. The charged trap states move to an energy level located near midgap, creating a positively charged depletion region in the channel, and causing current collapse. With increasing drain bias, the quasi-Fermi level approaches the charged trap states at the drain end of the gate, initiating detrapping of the electrons and restoring the current. The calculated results show good agreement with published experimental data. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL oxide semiconductor field-effect transistors KW - FIELD-effect transistors KW - METAL oxide semiconductors KW - GALLIUM nitride KW - SEMICONDUCTORS KW - GALLIUM compounds N1 - Accession Number: 12512662; Anwar, A.F.M. 1; Email Address: anwara@engr.uconn.edu Islam, Syed S. 2 Webster, Richard T. 3; Affiliation: 1: Electrical and Computer Engineering Department, University of Connecticut 2: Department of Electrical Engineering, Rochester Institute of Technology, New York 3: Sensors Directorate, Air Force Research Laboratory, Massachusetts; Source Info: 3/15/2004, Vol. 84 Issue 11, p1970; Subject Term: METAL oxide semiconductor field-effect transistors; Subject Term: FIELD-effect transistors; Subject Term: METAL oxide semiconductors; Subject Term: GALLIUM nitride; Subject Term: SEMICONDUCTORS; Subject Term: GALLIUM compounds; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 1 Graph; Document Type: Article L3 - 10.1063/1.1682700 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12512662&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - He, Guang S. AU - Tzu-Chau Lin AU - Jianming Dai, Guang S. AU - Prasad, Paras N. AU - Kannan, Ramamurthi AU - Dombroskie, AnnG. AU - Vaia, Richard A. AU - Loon-Seng Tan T1 - Degenerate two-photon-absorption spectral studies of highly two-photon active organic chromophores. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2004/03/15/ VL - 120 IS - 11 M3 - Article SP - 5275 EP - 5284 PB - American Institute of Physics SN - 00219606 AB - Degenerate two-photon absorption (TPA) spectral properties of five AFX chromophore solutions have been studied using a single and spectrally dispersed sub-picosecond white-light continuum beam. In a specially designed optical configuration, optical pathways inside the sample solution for different spectral components of the focused continuum beam were spatially separated from each other. Thus, the nondegenerate TPA processes coming from different spectral components can be eliminated, and the direct nonlinear absorption spectrum attributed to degenerate TPA processes can be readily obtained. Using this new technique, the complete TPA spectra for these five highly two-photon-active compounds (AF-380, AF-350, AF-295, AF-270, and AF-50) were obtained in the spectral range from 600 to 950 nm on an absolute scale of TPA cross section. The relationship between the molecular structures and their TPA spectral behaviors are discussed. In general the measured TPA spectra are not identical with the linear absorption spectra on the scale of absorbed photon(s) energy. Moreover, for some sample (such as AF-380), the TPA spectrum is totally different from the linear spectrum, which implies the difference of molecular transition pathways and selection rules for one- and two-photon excitation processes. At high excitation intensity levels (>=15 GW/cm2), the saturation behavior of TPA transition can be observed obviously in AF-350 and AF-380 solutions that exhibit much higher nonlinear absorptivity than the other chromophores investigated. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTONS KW - ABSORPTION spectra KW - EXCITON theory KW - SPECTRUM analysis KW - THEORY of wave motion N1 - Accession Number: 12456897; He, Guang S. 1; Email Address: gshe@acsu.buffalo.edu Tzu-Chau Lin 1 Jianming Dai, Guang S. 1 Prasad, Paras N. 1 Kannan, Ramamurthi 2 Dombroskie, AnnG. 2 Vaia, Richard A. 3 Loon-Seng Tan 3; Affiliation: 1: Institute for Lasers, Photonics and Biphotonics, State University of New York, Buffalo, Buffalo, New York 2: University of Dayton Research Institute, Dayton, Ohio 3: Polymer Branch, Materials & Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio; Source Info: 3/15/2004, Vol. 120 Issue 11, p5275; Subject Term: PHOTONS; Subject Term: ABSORPTION spectra; Subject Term: EXCITON theory; Subject Term: SPECTRUM analysis; Subject Term: THEORY of wave motion; Number of Pages: 10p; Illustrations: 2 Diagrams, 10 Graphs; Document Type: Article L3 - 10.1063/1.1647537 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12456897&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Williams AU - S. AU - Knighton AU - W. B. AU - Midey AU - A. J. AU - Viggiano AU - A. A. AU - Irle AU - Wang AU - Q. AU - Morokuma AU - K. T1 - Oxidation of Alkyl Ions, CnH2n+1+ (n = 1-5), in Reactions with O2 and O3 in the Gas Phase. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2004/03/15/ VL - 108 IS - 11 M3 - Article SP - 1980 EP - 1989 SN - 10895639 AB - Rate constants and product ion branching fractions are reported for the reactions of CH3+, C2H5+, s-C3H7+, s-C4H9+, t-C4H9+, and t-C5H11+ with O2 and O3 at 300 K in a variable-temperature selected-ion flow tube (VT-SIFT). The reaction rate constant for CH3+ with O3 is large and approximately equal to the thermal energy capture rate constant given by the Su-Chesnavich equation. The C2H5+, s-C3H7+, and s-C4H9+ ions are somewhat less reactive, reacting at approximately 7-46% of the thermal capture rate. The HCO+ and C2H3O+ ions are the major products in these reactions. The t-C4H9+ and t-C5H11+ ions are found to be unreactive, with rate constants <5 × 10-12 cm3 s-1, which is the present detection limit of our apparatus using this ozone source. Ozone is a singlet in its ground state, and ab initio calculations at the B3LYP/6-31G(d) level of theory indicate that reactant complexes can be formed, decreasing in stability with the size of alkyl chains attached to the cationic carbon atom. The decreasing reactivity of the alkyl ions with increasing order of the carbocation is attributed to a greatly reduced O3 binding energy. The ions listed above do not undergo two-body reactions with O2, k < 5 × 10-13 cm3 s-1, despite the availability of reaction channels with exothermicities of several hundred kilojoules per mole. Ab initio calculations at the B3LYP/6-31G(d) level of theory indicate that the O2 reaction systems form weak complexes with large C-O bond distances (repulsive at smaller distances) on the lowest energy triplet potential energy surface. Access to the singlet surface is required for bond formation; however, this surface is not accessible at thermal energies. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - SOLUTION (Chemistry) KW - OZONE KW - CHEMICAL kinetics N1 - Accession Number: 12529710; Williams S. 1 Knighton W. B. 1 Midey A. J. 1 Viggiano A. A. 1 Irle Wang Q. 1 Morokuma K. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom AFB, Massachusetts 01731-3010; Source Info: Mar2004, Vol. 108 Issue 11, p1980; Subject Term: ELECTRONS; Subject Term: SOLUTION (Chemistry); Subject Term: OZONE; Subject Term: CHEMICAL kinetics; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12529710&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Malas, J.C. AU - Venugopal, S. AU - Seshacharyulu, T. T1 - Effect of microstructural complexity on the hot deformation behavior of aluminum alloy 2024 JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2004/03/15/ VL - 368 IS - 1/2 M3 - Article SP - 41 SN - 09215093 AB - Powder metallurgy (P/M) aluminum alloy 2024 (Al-2024) reinforced with SiC whiskers is difficult to shape-form because of microstructural complexities introduced by rapid solidification and whisker additions. In the present investigation, four forms of Al-2024, viz. ingot, wrought, P/M, and P/M with 20 v/o silicon-carbide whiskers (SiCw) were examined to understand the influence of structural complexity on the hot deformation microstructural mechanisms. The analyses using the concepts of activation energy and dynamic stability criteria revealed that the safe hot working window of Al-2024 narrows as the microstructural complexity increases. This experimental observation was also explained on the basis of information theory. Safe processing window identified for the composite was validated using scaled-up extrusion experiments and the influence of processing conditions on microstructural control was demonstrated. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLURGY KW - ALUMINUM KW - ALLOYS KW - MICROSTRUCTURE KW - Aluminum KW - Hot deformation KW - Microstructure N1 - Accession Number: 12309028; Malas, J.C. 1; Email Address: james.malas@wpafb.af.mil Venugopal, S. 2 Seshacharyulu, T. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: Materials Development Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, Tamil Nadu, India; Source Info: Mar2004, Vol. 368 Issue 1/2, p41; Subject Term: METALLURGY; Subject Term: ALUMINUM; Subject Term: ALLOYS; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: Aluminum; Author-Supplied Keyword: Hot deformation; Author-Supplied Keyword: Microstructure; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.msea.2003.09.078 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12309028&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Putthanarat, S. AU - Tapadia, P. AU - Zarkoob, Shahrzad AU - Miller, L.D. AU - Eby, R.K. AU - Adams, W. Wade T1 - The color of dragline silk produced in captivity by the spider Nephila clavipes JO - Polymer JF - Polymer Y1 - 2004/03/15/ VL - 45 IS - 6 M3 - Article SP - 1933 SN - 00323861 AB - Fifty-six N. clavipes spiders from the same region of Florida were kept in captivity under the same conditions and fed a similar diet of crickets. Their major ampulate glands were forcibly silked. Dates, silking times, and the colors of the dragline silk produced were recorded. The colors ranged from all white through various combinations of white and yellow upon different silkings to all yellow. If a spider had been producing white silk for at least 4 h, the color being produced could suddenly change to yellow 38% of the time. These observations indicate that factors beyond diet and environment influence the color of silk produced in captivity by forcible silking. They also indicate that the spiders store both pigmented and unpigmented silks and that some aspect of forcible silking precludes the spiders'' choosing the color. The yellow and white silks exhibit similar exterior surface morphologies as well as similar tensile properties. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILK KW - COLOR KW - MORPHOLOGY KW - SPIDERS KW - FLORIDA KW - UNITED States KW - Color KW - Dragline silk KW - N. clavipes N1 - Accession Number: 12244938; Putthanarat, S. 1 Tapadia, P. 1 Zarkoob, Shahrzad 1 Miller, L.D. 1 Eby, R.K. 1; Email Address: reby@uakron.edu Adams, W. Wade 2; Affiliation: 1: Department of Polymer Science, The University of Akron, 170 University Avenue, Akron, OH 44325-3909, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, Dayton, OH 45433-7734, USA; Source Info: Mar2004, Vol. 45 Issue 6, p1933; Subject Term: SILK; Subject Term: COLOR; Subject Term: MORPHOLOGY; Subject Term: SPIDERS; Subject Term: FLORIDA; Subject Term: UNITED States; Author-Supplied Keyword: Color; Author-Supplied Keyword: Dragline silk; Author-Supplied Keyword: N. clavipes; NAICS/Industry Codes: 112999 All other miscellaneous animal production; NAICS/Industry Codes: 313110 Fiber, Yarn, and Thread Mills; NAICS/Industry Codes: 313210 Broadwoven Fabric Mills; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.polymer.2004.01.020 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12244938&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Puente Orench, I. AU - Putthanarat, S. AU - Baltá Calleja, F.J. AU - Eby, R.K. AU - Stone, Morley T1 - Ultra-microindentation at the surface of silk membranes JO - Polymer JF - Polymer Y1 - 2004/03/15/ VL - 45 IS - 6 M3 - Article SP - 2041 SN - 00323861 AB - Ultra-microindentation was used to measure the microhardness and modulus of silk (Bombyx mori) membranes, cast from 20 to 80 °C. The microhardness and modulus were determined from the loading/unloading curves. The membranes exhibit microhardness of about 400 MPa which is larger than the values for most common synthetic polymers (50–300 MPa) implying a greater scratch resistance. The moduli are of the order of those measured by the other means for B. mori silk membranes (5 GPa), and fibers (7–11 GPa). There is some correlation between microhardness and the dimensions of the grains/nanofibrils, but none with surface roughness. The results extend the range of an empirical correlation between microhardness and modulus. The present data together with previous data from other polymers fit the equation, H=0.55 E0.74, with a correlation coefficient of 0.94. Finally, it is shown that elastic recovery of the silk membranes is an increasing function of the maximum load applied. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROHARDNESS KW - SILKWORMS KW - POLYMERS KW - SILK KW - MEMBRANES (Technology) KW - B. mori KW - Silk KW - Ultra-microindentation N1 - Accession Number: 12244949; Puente Orench, I. 1 Putthanarat, S. 2 Baltá Calleja, F.J. 1; Email Address: embalta@iem.cfmac.csic.es Eby, R.K. 2 Stone, Morley 3; Affiliation: 1: Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain 2: Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA 3: Air Force Research Laboratory, AFRL/MLBP, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Mar2004, Vol. 45 Issue 6, p2041; Subject Term: MICROHARDNESS; Subject Term: SILKWORMS; Subject Term: POLYMERS; Subject Term: SILK; Subject Term: MEMBRANES (Technology); Author-Supplied Keyword: B. mori; Author-Supplied Keyword: Silk; Author-Supplied Keyword: Ultra-microindentation; NAICS/Industry Codes: 313110 Fiber, Yarn, and Thread Mills; NAICS/Industry Codes: 112999 All other miscellaneous animal production; NAICS/Industry Codes: 313210 Broadwoven Fabric Mills; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.polymer.2003.12.069 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12244949&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - S. J. Bai, Emillo AU - C. C. Wu AU - Dang, T. D. AU - Arnold, F. E. AU - Sakaran, B. T1 - Tunable and white light-emitting diodes of monolayer fluorinated benzoxazole graft copolymers. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/03/08/ VL - 84 IS - 10 M3 - Article SP - 1656 EP - 1658 PB - American Institute of Physics SN - 00036951 AB - Coil-like graft copolymers of poly(A[sub m]-co-B[sub (1-m)]) containing identical heterocyclic aromatic benzoxazole with trifluoromethyl-ethyl as the backbone and pendants of monohydroxl (A[sub m]) and/or bidecyloxyl (B[sub (1-m)]) on their phenylene ring were studied for luminescence properties. The copolymers were synthesized with molar fraction m ranging from 0, 0.25, 0.5, 0.75, to 1, and then dissolved and spun onto a Spectrosil® quartz slide or an indium-tin-oxide (ITO) substrate. The fluorescence properties of copolymers were investigated by ultraviolet–visible absorption covering 185 nm to 800 nm and photoluminescence (PL) emission excited at 363 nm. The PL results exhibited an excellent chromatic tuning, ranging from green to white emission as m decreased. Aluminum electron injectors were evaporated onto the copolymer/ITO unit making it into monolayer light-emitting diodes for current–voltage and electroluminescence (EL) responses. An emission threshold voltage of 6 V was achieved for all the monolayer copolymer devices. The Commission Internationale de l’Eclairage coordinates of the EL emission were from (0.25, 0.53) to (0.24,0.31) covering a wide visible range including white light emission. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAFT copolymers KW - LIGHT emitting diodes KW - ELECTRIC currents KW - ELECTROLUMINESCENCE KW - PHOTOLUMINESCENCE KW - FLUORESCENCE N1 - Accession Number: 12405731; S. J. Bai, Emillo 1; Email Address: sjbai@mail.nsysu.edu.tw C. C. Wu 1 Dang, T. D. 2 Arnold, F. E. 2 Sakaran, B. 3; Affiliation: 1: Institute of Materials Science and Engineering, National Sun Yat-sen University, Kaohsiung Taiwan, Republic of China. 2: Polymer Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433- 7750. 3: Universal Technology Corporation, 1271 North Fairfield Road, Dayton, Ohio 45432-2600.; Source Info: 3/8/2004, Vol. 84 Issue 10, p1656; Subject Term: GRAFT copolymers; Subject Term: LIGHT emitting diodes; Subject Term: ELECTRIC currents; Subject Term: ELECTROLUMINESCENCE; Subject Term: PHOTOLUMINESCENCE; Subject Term: FLUORESCENCE; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article L3 - 10.1063/1.1667262 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12405731&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lamberson, Donald L. AU - Duff, Edward AU - Washburn, Don AU - Holmberg, Courtney T1 - Whither High-Energy Lasers? JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2004///Spring2004 VL - 18 IS - 1 M3 - Article SP - 15 EP - 24 PB - Superintendent of Documents SN - 1555385X AB - Imagine an ability to execute speed-of-light attacks against enemy forces with massive bursts of photon energy, literally incinerating the intended target. Mankind has been intrigued by the concept of directing light against a target for a very long time, and the absence of today's advanced technology did not preclude dreams and fantasies of novel weapons. Marcus Claudius Marcellus, the Roman commander, began attacking Syracuse during the second Punic War with a fleet of over 50 quinqueremes, vessels that were propelled by five banks of oars and filled with soldiers armed with all kinds of devices to overcome the city walls. KW - WAR KW - PHOTONS KW - WEAPONS KW - MILITARY personnel KW - HUMAN beings KW - TECHNOLOGY N1 - Accession Number: 12933955; Lamberson, Donald L. 1 Duff, Edward 2 Washburn, Don 3 Holmberg, Courtney 1,4; Affiliation: 1: USAF 2: deputy for programs, Laser Systems Office 3: program manager of the Relay Mirror Technology Program, Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico. 4: chief scientist. Air University Center for Strategy and Technology, Maxwell AFB, Alabama.; Source Info: Spring2004, Vol. 18 Issue 1, p15; Subject Term: WAR; Subject Term: PHOTONS; Subject Term: WEAPONS; Subject Term: MILITARY personnel; Subject Term: HUMAN beings; Subject Term: TECHNOLOGY; Number of Pages: 10p; Document Type: Article; Full Text Word Count: 3754 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12933955&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stone, Morley O. AU - Naik, Rajesh R. AU - Lbrott, Lawrence AU - Meltzer JR., Peter S. T1 - Electromagnetic Applications of Biomimetic Research. JO - Air & Space Power Journal JF - Air & Space Power Journal Y1 - 2004///Spring2004 VL - 18 IS - 1 M3 - Article SP - 33 EP - 37 PB - Superintendent of Documents SN - 1555385X AB - For the past several years, the Air Force Research Laboratory in the U.S. has been developing sensors capable of detecting electromagnetic radiation across the spectrum from the infrared, through the visible, and into the ultraviolet regions. These sensors have become integral parts of military weapons systems as well as intelligence, surveillance, and reconnaissance systems and, undoubtedly, the capabilities are technologically sophisticated. However, many biological systems possess sensing capabilities unmatched by current technologies. KW - MILITARY supplies KW - DETECTORS KW - ELECTROMAGNETIC waves KW - AIR forces KW - BIOMIMETICS (Chemistry) KW - ELECTROMAGNETISM N1 - Accession Number: 12933974; Stone, Morley O. 1 Naik, Rajesh R. 2 Lbrott, Lawrence 3 Meltzer JR., Peter S. 4; Affiliation: 1: principal research biologist, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio. 2: senior research scientist, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio. 3: polymer scientist, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio. 4: senior technical writer and editor, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio.; Source Info: Spring2004, Vol. 18 Issue 1, p33; Subject Term: MILITARY supplies; Subject Term: DETECTORS; Subject Term: ELECTROMAGNETIC waves; Subject Term: AIR forces; Subject Term: BIOMIMETICS (Chemistry); Subject Term: ELECTROMAGNETISM; Number of Pages: 5p; Document Type: Article; Full Text Word Count: 2494 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12933974&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fitch, R.C. AU - Gillespie, J.K. AU - Moser, N. AU - Jenkins, T. AU - Sewell, J. AU - Via, D. AU - Crespo, A. AU - Dabiran, A.M. AU - Chow, P.P. AU - Osinsky, A. AU - La Roche, J.R. AU - Ren, F. AU - Pearton, S.J. T1 - Properties of Ir-based Ohmic contacts to AlGaN/GaN high electron mobility transistors. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/03//3/1/2004 VL - 84 IS - 9 M3 - Article SP - 1495 EP - 1497 PB - American Institute of Physics SN - 00036951 AB - Measurement of the electrical characteristics of 250 devices on the same 2 in. diameter wafer shows that Ti/Al/Ir/Au Ohmic contacts on AlGaN/GaN high electron mobility transistors (HEMTs) have lower average specific contact resistance after annealing at 850 °C for 30 s (4.6×10[sup -5] Ω cm[sup 2]) compared to more standard Ti/Al/Ni/Au contacts (2×10[sup -4] Ω cm[sup 2]). HEMTs with these Ir-based contacts also show average interdevice isolation currents approximately a factor of 2 lower, higher peak transconductance (134 mS/mm compared to 121 mS/mm), and higher device breakdown voltage (31 V compared to 23 V) than the devices with Ni-based contacts. This Ir-based contact metallurgy looks promising for applications requiring extended thermal stability of the HEMTs. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OHMIC contacts KW - ELECTRON mobility KW - TRANSISTORS KW - IRIDIUM KW - GALLIUM nitride KW - SEMICONDUCTORS N1 - Accession Number: 12360969; Fitch, R.C. 1 Gillespie, J.K. 1 Moser, N. 1 Jenkins, T. 1 Sewell, J. 1 Via, D. 1 Crespo, A. 1 Dabiran, A.M. 2 Chow, P.P. 2 Osinsky, A. 2 La Roche, J.R. 3 Ren, F. 3 Pearton, S.J. 4; Email Address: spear@mse.ufl.edu; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB 2: SVT Associates 3: Department of Chemical Engineering, University of Florida 4: Department of Materials Science and Engineering, University of Florida; Source Info: 3/1/2004, Vol. 84 Issue 9, p1495; Subject Term: OHMIC contacts; Subject Term: ELECTRON mobility; Subject Term: TRANSISTORS; Subject Term: IRIDIUM; Subject Term: GALLIUM nitride; Subject Term: SEMICONDUCTORS; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.1651649 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12360969&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Greer, James L. AU - Jensen, Daniel D. AU - Wood, Kristin L. T1 - Effort flow analysis: a methodology for directed product evolution JO - Design Studies JF - Design Studies Y1 - 2004/03// VL - 25 IS - 2 M3 - Article SP - 193 SN - 0142694X AB - Part count reduction through part combination is a recognized goal of design for assembly (DFA). Some of the many benefits of part count reduction are: a reduced number of assembly operations, reduced procurement costs, cycle time reduction, supply chain reduction, and higher potential profits. In previous work, force flow analysis, a new technique to map forces as they flow across interfaces in a product, was shown to be successful at systematically providing creative insights for part combination. These insights arise by highlighting components having no relative motion between them. This paper presents a novel concept that extends the theoretical basis of force flow analysis to a much broader scope, referred to as effort flow analysis, addressing component combinations having varying degrees of relative motion. A systematic method for classifying these sets of components is given, and compliant mechanisms are presented as an example of successful combinations across interfaces with relative motion. Examples are provided for the redesign of a ‘Quick Grip™ Clamp’ and a staple remover, both of which highlight a specific class of relative motion components. [Copyright &y& Elsevier] AB - Copyright of Design Studies is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PRODUCT design KW - INDUSTRIAL design KW - CUSTOMIZATION KW - PRODUCT management KW - DESIGN KW - component combination KW - design methods KW - product design KW - product modelling N1 - Accession Number: 12040519; Greer, James L. 1 Jensen, Daniel D. 2 Wood, Kristin L. 1; Affiliation: 1: Department of Mechanical Engineering, University of Texas, Austin, TX 78712-1063, USA 2: Department of Engineering Mechanics, US Air Force Academy, Colorado Springs, CO 80840-6240, USA; Source Info: Mar2004, Vol. 25 Issue 2, p193; Subject Term: PRODUCT design; Subject Term: INDUSTRIAL design; Subject Term: CUSTOMIZATION; Subject Term: PRODUCT management; Subject Term: DESIGN; Author-Supplied Keyword: component combination; Author-Supplied Keyword: design methods; Author-Supplied Keyword: product design; Author-Supplied Keyword: product modelling; NAICS/Industry Codes: 541420 Industrial Design Services; Number of Pages: 22p; Document Type: Article L3 - 10.1016/j.destud.2003.09.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12040519&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gute, Brian D. AU - Balasubramanian, K. AU - Geiss, K.T. AU - Basak, S.C. T1 - Prediction of halocarbon toxicity from structure: a hierarchical QSAR approach JO - Environmental Toxicology & Pharmacology JF - Environmental Toxicology & Pharmacology Y1 - 2004/03// VL - 16 IS - 1/2 M3 - Article SP - 121 SN - 13826689 AB - Mathematical structural invariants and quantum theoretical descriptors have been used extensively in quantitative structure–activity relationships (QSARs) for the estimation of pharmaceutical activities, biological properties, physicochemical properties, and the toxicities of chemicals. Recently our research team has explored the relative importance of various levels of chemodescriptors, i.e. topostructural (TS), topochemical (TC), geometrical (3D), and quantum theoretical descriptors, in property estimation. This study examines the contribution of chemodescriptors ranging from topostructural to quantum theoretic calculations, up to the Gaussian STO-3G level, in predicting the results of six indicators of oxidative stress for a set of 20 halocarbons. Using quantum theoretical calculations in this study is of particular interest as molecular energetics is related to the likelihood of electron attachment and free radical formation, the mechanism of toxicity for these chemicals and should aid in modeling their potential for oxidative stress. [Copyright &y& Elsevier] AB - Copyright of Environmental Toxicology & Pharmacology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYDROCARBONS KW - TOXICITY testing KW - CHEMICALS KW - ELECTRONS KW - Halogenated aliphatic hydrocarbons KW - Oxidative stress KW - QSAR N1 - Accession Number: 12381927; Gute, Brian D. 1 Balasubramanian, K. 2,3,4 Geiss, K.T. 5 Basak, S.C. 1; Email Address: sbasak@nrri.umn.edu; Affiliation: 1: Natural Resources Research Institute, University of Minnesota Duluth, 5013 Miller Trunk Hwy., Duluth, MN 55811, USA 2: Department of Applied Science, University of California Davis, Livermore, CA 94550, USA 3: Chemistry and Material Science Directorate, Lawrence Livermore National Laboratory, University of California, P.O. Box 808, L-268 Livermore, CA 94550, USA 4: Glenn T. Seaborg Center, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA 5: Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433, USA; Source Info: Mar2004, Vol. 16 Issue 1/2, p121; Subject Term: HYDROCARBONS; Subject Term: TOXICITY testing; Subject Term: CHEMICALS; Subject Term: ELECTRONS; Author-Supplied Keyword: Halogenated aliphatic hydrocarbons; Author-Supplied Keyword: Oxidative stress; Author-Supplied Keyword: QSAR; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.etap.2003.10.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12381927&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sanford, G. E. AU - Welsh, J. S. T1 - EELV SECONDARY PAYLOAD ADAPTER (ESPA) STATIC QUALIFICATION TESTS, PART 2. JO - Experimental Techniques JF - Experimental Techniques Y1 - 2004/03//Mar/Apr2004 VL - 28 IS - 2 M3 - Article SP - 39 EP - 41 SN - 07328818 AB - Provides information on the qualifying tests conducted by team members from the U.S. Air Force Research Laboratory/Space Vehicles Directorate, U.S. Department of Defense Space Test Program and CSA Engineering on a secondary payload adapter. Basis of the calculations made from the tests; Analysis of the finite elements in the design phase of the secondary payload adapter; Objectives of the qualification tests. KW - SPACE vehicles KW - FINITE element method KW - EVALUATION KW - UNITED States. Air Force. Research Laboratory KW - UNITED States. Dept. of Defense KW - CSA Engineering Inc. N1 - Accession Number: 13103503; Sanford, G. E. 1 Welsh, J. S. 2; Affiliation: 1: CSA Engineering, Inc., Albuquerque, NM 2: Air Force Research Laboratory/VSSV, Kirtland AFB, NM; Source Info: Mar/Apr2004, Vol. 28 Issue 2, p39; Subject Term: SPACE vehicles; Subject Term: FINITE element method; Subject Term: EVALUATION; Subject Term: UNITED States. Air Force. Research Laboratory; Company/Entity: UNITED States. Dept. of Defense DUNS Number: Company/Entity: CSA Engineering Inc. DUNS Number: 066497793; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; Number of Pages: 3p; Illustrations: 3 Black and White Photographs, 1 Diagram, 1 Chart; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13103503&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Commins, David AU - Thompson, Thomas W. AU - Shaw, Stanford J. AU - Salyer, Lucy E. AU - Chesson, Michael B. AU - Jackson, W. Sherman AU - May, Gary AU - Cope, R. Douglas AU - Lester, Connie L. AU - Goodman, Nan AU - Johnson, Benjamin AU - Portwood, Shirley J. AU - Pierson, Darren J. AU - Pieper, Jadwiga E. AU - Harling, Frederick F. AU - Holli, Melvin G. AU - Woodworth, Steven E. AU - Javier Pescador, Juan AU - Zieger, Robert H. AU - Tucker, Spencer C. T1 - Book Reviews. JO - Historian JF - Historian Y1 - 2004///Spring2004 VL - 66 IS - 1 M3 - Book Review SP - 129 EP - 215 PB - Wiley-Blackwell SN - 00182370 AB - Arab Nationalism in the Twentieth Century: From Triumph to Despair. By Adeed Dawisha. (Princeton: Princeton University Press, 2003. Pp. 340. $29.95.) A Slaving Voyage to Africa and Jamaica: The Log of the Sandown, 1793–1794. Edited by Bruce L. Mouser. (Bloomington: Indiana University Press, 2002. Pp. 156. $27.95.) The History of Turkey. By Douglas A. Howard. (Westport, CT and London: Greenwood Press, 2001. Pp. xxii, 241. $39.95.) The Death Penalty: An American History. By Stuart Banner. (Cambridge: Harvard University Press, 2002. Pp. ix, 408. $29.95.) Union Soldiers and the Northern Home Front: Wartime Experiences, Postwar Adjustments. Edited by Paul A. Cimbala and Randall M. Miller. (New York: Fordham University Press, 2002. Pp. 508. $25.00.) Railroads in the Civil War: The Impact of Management on Victory and Defeat. By John E. Clark, Jr. (Baton Rouge: Louisiana State University Press, 2001. Pp. xv, 275. $34.95.) The Asian American Century. By Warren I. Cohen. (Cambridge: Harvard University Press, 2002. Pp. viii, 150. $22.95.) Theaters of Conversion: Religious Architecture and Indian Artisans in Colonial Mexico. By Samuel Y. Edgerton. Photographs by Jorge Perez de Lara. (Albuquerque: University of New Mexico Press, 2001. Pp. xvii, 350. $60.00.) Jane Addams and the Dream of American Democracy. By Jean Bethke Elshtain. (New York: Basic Books, 2002. Pp. vii, 328. $28.00.) American Law in the 20th Century. By Lawrence M. Friedman. (New Haven and London: Yale University Press, 2002. Pp. xii, 722. $35.00.) A World of Its Own: Race, Labor, and Citrus in the Making of Greater Los Angeles, 1900–1970. By Matt García. (Chapel Hill: The University of North Carolina Press, 2001. Pp. xvii, 330. $19.50.) American Abolitionists. By Stanley Harrold. (New York: Longman, 2001. Pp. 170. $11.95.) James G. Blaine and Latin America. By David Healy. (Columbia and London: University of Missouri Press, 2001. Pp. 278. $39.95.) When the Romance Ended: Leaders of the Chilean Left, 1968–1998. By Katherine Hite. (New York: Columbia University Press, 2000. Pp. xxii, 246. $24.00.) Sam Adams: Son of Liberty, Father of Revolution. By Benjamin H. Irvin. (Oxford: Oxford University Press, 2002. Pp. 176. $24.00.) The Napoleon of New York: Mayor Fiorello La Guardia. By H. Paul Jeffers. (New York: John Wiley and Son, 2002. Pp. 392. $30.00.) Cloak and Dollar: A History of American Secret Intelligence. By Rhodri Jeffreys-Jones. (New Haven: Yale University Press, 2002. Pp. x, 342. $22.95.) Medieval Culture and the Mexican American Borderlands. By Milo Kearney and Manuel Medrano. (College Station: Texas A&M University Press, 2001. Pp. 256. $34.95.) Doughboys, the Great War, and the Remaking of America. By Jennifer D. Keene. 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No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONFICTION KW - ARAB Nationalism in the 20th Century: From Triumph to Despair (Book) KW - HISTORY of Turkey, The (Book) KW - DEATH Penalty: An American History, The (Book) N1 - Accession Number: 12360017; Commins, David 1 Thompson, Thomas W. 2 Shaw, Stanford J. 3,4 Salyer, Lucy E. 5 Chesson, Michael B. 6 Jackson, W. Sherman 7 May, Gary 8 Cope, R. Douglas 9 Lester, Connie L. 10 Goodman, Nan 11 Johnson, Benjamin 12 Portwood, Shirley J. 13 Pierson, Darren J. 14 Pieper, Jadwiga E. 15 Harling, Frederick F. 16 Holli, Melvin G. 17 Woodworth, Steven E. 18 Javier Pescador, Juan 19 Zieger, Robert H. 20 Tucker, Spencer C. 21; Affiliation: 1: Dickinson College 2: Air Force Research Laboratory 3: Bilkent University, Ankara, Turkey 4: University of California Los Angeles 5: University of New Hampshire 6: University of Massachusetts--Boston 7: Miami University 8: University of Delaware, Emeritus 9: Brown University 10: Mississippi State University 11: University of Colorado, Boulder 12: Southern Methodist University 13: Southern Illinois University Edwardsville Shirley J. Portwood 14: Texas A&M University 15: Penn State University, Erie 16: Westfield State College 17: University of Illinois, Chicago 18: Texas Christian University 19: Michigan State University 20: University of Florida 21: Virginia Military Institute; Source Info: Spring2004, Vol. 66 Issue 1, p129; Subject Term: NONFICTION; Reviews & Products: ARAB Nationalism in the 20th Century: From Triumph to Despair (Book); Reviews & Products: HISTORY of Turkey, The (Book); Reviews & Products: DEATH Penalty: An American History, The (Book); Number of Pages: 88p; Document Type: Book Review L3 - 10.1111/j.0018-2370.2004.00066.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12360017&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Matyjas, John D. AU - Psaromiligkos, Loannis N. AU - Batalama, Stella N. AU - Medley, Michael J. T1 - Fast Converging Minimum Probability of Error Neural Network Receivers for DS-CDMA Communications. JO - IEEE Transactions on Neural Networks JF - IEEE Transactions on Neural Networks Y1 - 2004/03// VL - 15 IS - 2 M3 - Article SP - 445 EP - 454 SN - 10459227 AB - We consider a multilayer perceptron neural network (NN) receiver architecture for the recovery of the information bits of a direct-sequence code-division-multiple-access (DS-CDMA) user. We develop a fast converging adaptive training algorithm that minimizes the bit-error rate (BER) at the output of the receiver. The adaptive algorithm has three key features: i) it incorporates the BER, i.e., the ultimate performance evaluation measure, directly into the learning process, ii) it utilizes constraints that are derived from the properties of the optimum single-user decision boundary for additive white Gaussian noise (AWGN) multiple-access channels, and iii) it embeds importance sampling (IS) principles directly into the receiver optimization process. Simulation studies illustrate the BER performance of the proposed scheme. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Neural Networks is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEURAL networks (Computer science) KW - MOBILE communication systems KW - ARTIFICIAL intelligence KW - STOCHASTIC processes KW - COMPUTER architecture KW - ALGORITHMS KW - LEARNING N1 - Accession Number: 12998418; Matyjas, John D. 1; Email Address: matyjas@eng.buffalo.edu Psaromiligkos, Loannis N. 2; Email Address: yannis@ece.mcgill.ca Batalama, Stella N. 3; Email Address: Michael.Medley@rl.af.mil Medley, Michael J. 4; Affiliation: 1: Department of Electrical Engineering, State University of New York at Buffalo, Buffalo, NY 14260 USA. 2: Department of Electrical and Computer Engineering, McGill University, Montréal, QC H311 2N4 Canada. 3: U. S. Air Force Research Laboratory (AFRL), Rome, NY. 4: Air Force Research Laboratory, IFGC, Rome, NY 13441 USA.; Source Info: Mar2004, Vol. 15 Issue 2, p445; Subject Term: NEURAL networks (Computer science); Subject Term: MOBILE communication systems; Subject Term: ARTIFICIAL intelligence; Subject Term: STOCHASTIC processes; Subject Term: COMPUTER architecture; Subject Term: ALGORITHMS; Subject Term: LEARNING; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 10p; Document Type: Article L3 - 10.1109/TNN.2004.824258 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12998418&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiang, Jutao AU - Tsao, Stanley AU - O’Sullivan, Thomas AU - Razeghi, Manijeh AU - Brown, Gail J. T1 - Fabrication of indium bumps for hybrid infrared focal plane array applications JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2004/03// VL - 45 IS - 2 M3 - Article SP - 143 SN - 13504495 AB - Hybrid infrared focal plane arrays (FPAs) have found many applications. In hybrid IR FPAs, FPA and Si read out integrated circuits (ROICs) are bonded together with indium bumps by flip-chip bonding. Taller and higher uniformity indium bumps are always being pursued in FPA fabrication. In this paper, two indium bump fabrication processes based on evaporation and electroplating techniques are developed. Issues related to each fabrication technique are addressed in detail. The evaporation technique is based on a unique positive lithography process. The electroplating method achieves taller indium bumps with a high aspect ratio by a unique “multi-stack” technique. This technique could potentially benefit the fabrication of multi-color FPAs. Finally, a proposed low-cost indium bump fabrication technique, the “bump transfer”, is given as a future technology for hybrid IR FPA fabrication. [Copyright &y& Elsevier] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FOCAL planes KW - INTEGRATED circuits KW - SILICON KW - LITHOGRAPHY KW - Bump KW - Electroplating KW - Evaporation KW - Focal plane array KW - Indium KW - Infrared KW - Lift-off N1 - Accession Number: 11959851; Jiang, Jutao 1 Tsao, Stanley 1 O’Sullivan, Thomas 1 Razeghi, Manijeh 1; Email Address: razeghi@ece.northwestern.edu Brown, Gail J. 2; Affiliation: 1: Department of Electrical and Computer Engineering, Center for Quantum Devices, Northwestern University, 2220 North Campus Drive, Cook Hall, Room 4051, Evanston, IL 60208, USA 2: Air Force Research Laboratory, Materials and Manufacturing, Directorate, AFRL/MLPS, Wright-Patterson AFB, OH 45433-7707, USA; Source Info: Mar2004, Vol. 45 Issue 2, p143; Subject Term: FOCAL planes; Subject Term: INTEGRATED circuits; Subject Term: SILICON; Subject Term: LITHOGRAPHY; Author-Supplied Keyword: Bump; Author-Supplied Keyword: Electroplating; Author-Supplied Keyword: Evaporation; Author-Supplied Keyword: Focal plane array; Author-Supplied Keyword: Indium; Author-Supplied Keyword: Infrared; Author-Supplied Keyword: Lift-off; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 323119 Other printing; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.infrared.2003.08.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11959851&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Golden, P.J. AU - Bartha, B.B. AU - Grandt Jr, A.F. AU - Nicholas, T. T1 - Measurement of the fatigue crack propagation threshold of fretting induced cracks in Ti–6Al–4V JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2004/03// VL - 26 IS - 3 M3 - Article SP - 281 SN - 01421123 AB - A unique fatigue specimen was designed from the used fretting pads of Ti–6Al–4V fretting fatigue experiments. Many of these pads contained cracks that initiated and then arrested during the original fretting experiments. Heat tinting was used to mark the crack surface, and stress relief was applied to some specimens to remove load-history effects. The specimens were subjected to high cycle fatigue step testing and the threshold stresses were measured. The measured fretting crack sizes were used to calculate the crack propagation threshold, ΔKth. The results were analyzed for short crack and load history effects. Crack size effects were readily explained with a simple short crack model. No load history effects were noted for these fretting induced cracks. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Fatigue KW - FRACTURE mechanics KW - TITANIUM KW - TINTING KW - Fatigue KW - Fretting KW - Threshold KW - Ti–6Al–4V N1 - Accession Number: 11606240; Golden, P.J. 1; Email Address: patrick.golden@wpafb.af.mil Bartha, B.B. 1 Grandt Jr, A.F. 2 Nicholas, T. 1; Affiliation: 1: US Air Force Research Laboratory, AFRL/MLLMN, Wright-Patterson AFB, OH 45433 USA 2: School of Aeronautics and Astronautics, 1282 Grissom Hall, Purdue University, West Lafayette, IN 47907-1282, USA; Source Info: Mar2004, Vol. 26 Issue 3, p281; Subject Term: MATERIALS -- Fatigue; Subject Term: FRACTURE mechanics; Subject Term: TITANIUM; Subject Term: TINTING; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Fretting; Author-Supplied Keyword: Threshold; Author-Supplied Keyword: Ti–6Al–4V; NAICS/Industry Codes: 238150 Glass and Glazing Contractors; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 8p; Document Type: Article L3 - 10.1016/S0142-1123(03)00166-X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11606240&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sihn, Sangwook AU - Iarve, Endel V. AU - Roy, Ajit K. T1 - Three-dimensional stress analysis of textile composites: Part I. Numerical analysis JO - International Journal of Solids & Structures JF - International Journal of Solids & Structures Y1 - 2004/03// VL - 41 IS - 5/6 M3 - Article SP - 1377 SN - 00207683 AB - Three-dimensional stress analysis in a unit-cell of a plain-woven composite was performed by using B-spline displacement approximation. The spline approximation provides continuity of displacement and stress components within each yarn and matrix subregion. Two types of unit-cell problems with and without inter-yarn delamination were considered. A penalty function approach along with a contact surface characteristic function was used to obtain a full-field numerical solution for the frictionless contact problem between delaminated yarn surfaces.Yarn interfaces at yarn-crossover locations represent three-material wedge-type regions resulting in singular stress behavior. In the case of unit-cells with perfect bonding between the yarn interfaces, the numerical values of the inter-yarn normal stress did not exhibit trends typical for unbounded stress behavior, whereas the inter-yarn shear stress components displayed discontinuous behavior typical for numerical results in the vicinity of the stress singularity. In the presence of the delamination, both the inter-yarn normal and shear stress components exhibited unbounded behavior near the singularity. Notably, the inter-yarn normal stress showed signs of singular behavior in both cases of open and closed delaminations. Due to the stress singularity that exists at yarn-crossover locations containing three materials (yarn–yarn–matrix) interface intersections, the full-field numerical solution, even with high-order approximation functions, was not able to capture the directional nonuniqueness of the stress values in the vicinity of the singularity, and therefore calls for incorporation of the asymptotic singular stress analysis, which will be given in a follow-on paper [Sihn and Roy, International Journal of Solids and Structures (accepted for publication)]. [Copyright &y& Elsevier] AB - Copyright of International Journal of Solids & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - SPLINE theory KW - YARN KW - SPINNING (Textiles) KW - B-spline approximation method KW - Inter-yarn stresses KW - Woven composites N1 - Accession Number: 11957566; Sihn, Sangwook 1; Email Address: sangwook@stanfordalumni.org Iarve, Endel V. 1 Roy, Ajit K. 2; Affiliation: 1: Nonmetallic Division, University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0168, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLBC, 2941 P St Rm. 136, WPAFB, OH 45433-7750, USA; Source Info: Mar2004, Vol. 41 Issue 5/6, p1377; Subject Term: STRAINS & stresses (Mechanics); Subject Term: SPLINE theory; Subject Term: YARN; Subject Term: SPINNING (Textiles); Author-Supplied Keyword: B-spline approximation method; Author-Supplied Keyword: Inter-yarn stresses; Author-Supplied Keyword: Woven composites; NAICS/Industry Codes: 313110 Fiber, Yarn, and Thread Mills; NAICS/Industry Codes: 424310 Piece Goods, Notions, and Other Dry Goods Merchant Wholesalers; NAICS/Industry Codes: 414130 Piece goods, notions and other dry goods merchant wholesalers; NAICS/Industry Codes: 313220 Narrow Fabric Mills and Schiffli Machine Embroidery; NAICS/Industry Codes: 325220 Artificial and Synthetic Fibers and Filaments Manufacturing; Number of Pages: 17p; Document Type: Article L3 - 10.1016/j.ijsolstr.2003.10.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11957566&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sihn, Sangwook AU - Iarve, Endel V. AU - Roy, Ajit K. T1 - Three-dimensional stress analysis of textile composites. Part II: Asymptotic analysis JO - International Journal of Solids & Structures JF - International Journal of Solids & Structures Y1 - 2004/03// VL - 41 IS - 5/6 M3 - Article SP - 1395 SN - 00207683 AB - An asymptotic singular stress analysis was performed in the unit-cell of the plain–woven composite in the vicinity of the yarn–yarn–matrix interface intersection with and without the inter-yarn delamination. The problem was reduced to a three-material wedge singularity type by introducing several curvilinear coordinate systems and systematic expansions in power series of the distance from the contour of the stress singularity.The power of stress singularity at the inter-yarn and yarn–matrix interface junction was investigated as a function of crimp angle and matrix-to-yarn stiffness ratio. In the case of perfect bonding between the yarns and the matrix with small crimp angles near 9°, the power of singularity is weak (∼0.02) and insensitive to the stiffness ratio of the axial yarn to the matrix material. For increased crimp angles, however, small variations in the stiffness of the matrix material can significantly affect the power of singularity. In the case of the inter-yarn delamination, two singular roots––one crack type (∼0.5) and one weak (∼0.01)––were obtained for all crimp angles and delamination opening modes.Coefficients of the asymptotic expansion were obtained by comparing the full-field three-dimensional numerical solution based on B-spline displacement approximation method with multi-term asymptotic expansions in the vicinity of the singular point. Good agreement between the two solutions was observed in all examples considered. [Copyright &y& Elsevier] AB - Copyright of International Journal of Solids & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - YARN KW - TEXTILES KW - SPINNING (Textiles) KW - Asymptotic singular analysis KW - Inter-yarn stresses KW - Woven composites N1 - Accession Number: 11957567; Sihn, Sangwook 1; Email Address: sangwook@stanfordalumni.org Iarve, Endel V. 1 Roy, Ajit K. 2; Affiliation: 1: Nonmetallic Division, University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0168, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLBC, 2941 P St Rm. 136, WPAFB, OH 45433-7750, USA; Source Info: Mar2004, Vol. 41 Issue 5/6, p1395; Subject Term: STRAINS & stresses (Mechanics); Subject Term: YARN; Subject Term: TEXTILES; Subject Term: SPINNING (Textiles); Author-Supplied Keyword: Asymptotic singular analysis; Author-Supplied Keyword: Inter-yarn stresses; Author-Supplied Keyword: Woven composites; NAICS/Industry Codes: 313110 Fiber, Yarn, and Thread Mills; NAICS/Industry Codes: 424310 Piece Goods, Notions, and Other Dry Goods Merchant Wholesalers; NAICS/Industry Codes: 414130 Piece goods, notions and other dry goods merchant wholesalers; NAICS/Industry Codes: 313210 Broadwoven Fabric Mills; NAICS/Industry Codes: 314999 All Other Miscellaneous Textile Product Mills; NAICS/Industry Codes: 313220 Narrow Fabric Mills and Schiffli Machine Embroidery; NAICS/Industry Codes: 325220 Artificial and Synthetic Fibers and Filaments Manufacturing; Number of Pages: 16p; Document Type: Article L3 - 10.1016/j.ijsolstr.2003.11.024 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11957567&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blake, William B. AU - Gingras, David R. T1 - Comparison of Predicted and Measured Formation Flight Interference Effects. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2004/03//Mar/Apr2004 VL - 41 IS - 2 M3 - Article SP - 201 EP - 207 SN - 00218669 AB - Results from a wind-tunnel test of two delta-wing aircraft in close proximity are presented and compared with predictions from a vortex lattice method. Large changes in lift, pitching moment, and rolling moment are found on the trail aircraft as it moves laterally relative to the lead aircraft. The magnitude of these changes is reduced as the trail aircraft moves vertically with respect to the lead aircraft. Lift-to-drag ratio of the trail aircraft is increased when the wing tips are slightly overlapped. Wake-induced lift is overpredicted slightly when the aircraft overlap in the spanwise direction. Wake-induced pitching and rolling moments are well predicted. A maximum induced drag reduction of 25% is measured on the trail aircraft, compared with a 40% predicted reduction. Three positional stability derivatives, change in lift and pitching moment with vertical position and change in rolling moment with lateral position, are studied. Predicted boundaries between stable and unstable regions were generally in good agreement with experimentally derived boundaries. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERFERENCE (Aerodynamics) KW - AERONAUTICS KW - FLIGHT KW - STABILITY of airplanes KW - AERODYNAMICS N1 - Accession Number: 13100633; Blake, William B. 1,2,3 Gingras, David R. 4,5; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7531 2: Aerospace Engineer, Air Vehicles Directorate 3: Associate Fellow, AIAA 4: Bihrle Applied Research, Hampton, Virginia 23666 5: Senior member, AIAA; Source Info: Mar/Apr2004, Vol. 41 Issue 2, p201; Subject Term: INTERFERENCE (Aerodynamics); Subject Term: AERONAUTICS; Subject Term: FLIGHT; Subject Term: STABILITY of airplanes; Subject Term: AERODYNAMICS; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; Number of Pages: 7p; Illustrations: 1 Black and White Photograph, 3 Diagrams, 16 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13100633&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Emelett, Stephen J. AU - Goodhue, William D. AU - Karakashian, Aram S. AU - Vaccaro, Kenneth T1 - Observation of negative differential resistance in GaAlAs single-barrier heterostructure at room temperature. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/03//3/1/2004 VL - 95 IS - 5 M3 - Article SP - 2930 EP - 2932 PB - American Institute of Physics SN - 00218979 AB - Observation of experimental negative differential resistance at room temperature due to electron tunneling in a multiple-step single-barrier GaAlAs heterostructure is reported. Theoretical investigations of a three-step single-barrier heterostructure were conducted using the transfer matrix method and the Tsu–Esaki approach to obtain the transmission coefficients and current–voltage characteristic, respectively. The system was designed based on these calculations, and grown with molecular beam epitaxy. The diode exhibited negative differential resistance at 300 K and had a peak-to-valley current ratio above unity, which was in agreement with the predicted values. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HETEROSTRUCTURES KW - GALLIUM compounds KW - TUNNELING (Physics) KW - ELECTRONS KW - MATRIX mechanics KW - PHYSICS N1 - Accession Number: 12297717; Emelett, Stephen J. 1; Email Address: steve@solidstatescientific.com Goodhue, William D. 1 Karakashian, Aram S. 1 Vaccaro, Kenneth 2; Affiliation: 1: Department of Physics and Applied Physics, University of Massachusetts-Lowell, Massachusetts 2: Sensors Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts; Source Info: 3/1/2004, Vol. 95 Issue 5, p2930; Subject Term: HETEROSTRUCTURES; Subject Term: GALLIUM compounds; Subject Term: TUNNELING (Physics); Subject Term: ELECTRONS; Subject Term: MATRIX mechanics; Subject Term: PHYSICS; Number of Pages: 3p; Illustrations: 4 Graphs; Document Type: Article L3 - 10.1063/1.1645638 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12297717&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - NEWS AU - Wander, Joseph D. AU - Rood, Mark J. T1 - Capture and Recovery or Destruction of Trace Vapors from Gas Streams. JO - Journal of Environmental Engineering JF - Journal of Environmental Engineering Y1 - 2004/03// VL - 130 IS - 3 M3 - Editorial SP - 209 EP - 210 PB - American Society of Civil Engineers SN - 07339372 AB - Editorial. Introduces a series of articles concerning the development of technologies to capture and recover or destroy trace vapors from industrial gas streams, published in the March 2004 issue of the "Journal of Environmental Engineering". Equilibrium and dynamics when using activated carbon to remove the vapors from gas stream; Activated carbon monolith to capture toluene from gas; Biofiltration systems; Use of metal oxide catalysts to mineralize organic vapors. KW - ENVIRONMENTAL engineering KW - VOLATILE organic compounds KW - ACTIVATED carbon KW - TOLUENE KW - METALLIC oxides KW - CATALYSTS N1 - Accession Number: 12297932; Wander, Joseph D. 1; Email Address: Joe.Wander@tyndall.af.mil Rood, Mark J. 2; Email Address: mrood@uiuc.edu; Affiliation: 1: United States Air Force Research Laboratory, FL 2: Dept. of Civil and Environmental Engineering, Univ. of Illinois; Source Info: Mar2004, Vol. 130 Issue 3, p209; Subject Term: ENVIRONMENTAL engineering; Subject Term: VOLATILE organic compounds; Subject Term: ACTIVATED carbon; Subject Term: TOLUENE; Subject Term: METALLIC oxides; Subject Term: CATALYSTS; NAICS/Industry Codes: 325999 All other miscellaneous chemical product manufacturing; NAICS/Industry Codes: 325998 All Other Miscellaneous Chemical Product and Preparation Manufacturing; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 2p; Document Type: Editorial L3 - 10.1061/(ASCE)0733-9372(2004)130:3(209) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12297932&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sullivan, Patrick D. AU - Rood, Mark J. AU - Dombrowski, Katherine D. AU - Hay, K. James T1 - Capture of Organic Vapors Using Adsorption and Electrothermal Regeneration. JO - Journal of Environmental Engineering JF - Journal of Environmental Engineering Y1 - 2004/03// VL - 130 IS - 3 M3 - Article SP - 258 EP - 267 PB - American Society of Civil Engineers SN - 07339372 AB - Activated-carbon-fiber cloth (ACFC) is an alternative adsorbent to granular activated carbon (GAC) for removing and recovering organic vapors from gas streams. Electrothermal desorption (ED) of ACFC provides rapid regeneration while requiring less energy compared to traditional regeneration techniques used with GAC. This paper provides proof-of-concept results from a bench-scale ACFC adsorption system. The automated system captured 1,000 ppmv of hazardous air pollutants/volatile organic compounds (HAPs/VOCs) from air streams and demonstrated the use of ED, using ac voltage, to recover the HAP/VOC as a pure liquid. The desorbed HAP/VOC condensed onto the inner walls of the adsorber and was collected at the bottom of the vessel, without the use of ancillary cooling. Seventy percent of the HAP/VOC was collected per cycle as condensate, with the balance being retained in the regenerated adsorber or recycled to the second adsorber. ED with in-vessel condensation results in minimal N[sub 2] consumption and short regeneration cycle times allowing the process to be cost competitive with conventional GAC-based adsorption processes. This technology extends the application of carbon adsorption systems to situations that were previously economically and physically impractical. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Environmental Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VOLATILE organic compounds KW - ACTIVATED carbon KW - ADSORPTION KW - AIR pollution KW - COOLING KW - ENVIRONMENTAL engineering KW - Activated carbon filters KW - Adsorption KW - Vapor N1 - Accession Number: 12297925; Sullivan, Patrick D. 1; Email Address: patrick.sullivan@tyndall.af.mil Rood, Mark J. 2 Dombrowski, Katherine D. 3 Hay, K. James 4; Affiliation: 1: Air Force Research Laboratory, AFRL/MLFQ, FL 2: Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign 3: URS Corp., Austin, TX 4: Construction Engineering Research Laboratory, U.S. Army Corps of Engineers, IL; Source Info: Mar2004, Vol. 130 Issue 3, p258; Subject Term: VOLATILE organic compounds; Subject Term: ACTIVATED carbon; Subject Term: ADSORPTION; Subject Term: AIR pollution; Subject Term: COOLING; Subject Term: ENVIRONMENTAL engineering; Author-Supplied Keyword: Activated carbon filters; Author-Supplied Keyword: Adsorption; Author-Supplied Keyword: Vapor; NAICS/Industry Codes: 325998 All Other Miscellaneous Chemical Product and Preparation Manufacturing; NAICS/Industry Codes: 325999 All other miscellaneous chemical product manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1061/(ASCE)0733-9372(2004)130:3(258) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12297925&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dombrowski, Katherine D. AU - Lehmann, Christopher M.B. AU - Sullivan, Patrick D. AU - Ramirez, David AU - Rood, Mark J. AU - Hay, K. James T1 - Organic Vapor Recovery and Energy Efficiency during Electric Regeneration of an Activated Carbon Fiber Cloth Adsorber. JO - Journal of Environmental Engineering JF - Journal of Environmental Engineering Y1 - 2004/03// VL - 130 IS - 3 M3 - Article SP - 268 EP - 275 PB - American Society of Civil Engineers SN - 07339372 AB - An electrothermal-swing adsorption system was demonstrated on the bench scale for capture and recovery of organic vapors from air streams. Methyl propyl ketone (MPK), methyl ethyl ketone, n-hexane, acetone, and methylene chloride were removed and recovered at 200–1,020 ppm[sub v] in a 40.0 slpm air stream while using activated carbon fiber cloth (ACFC) adsorbent. Removal efficiencies were greater than 99.9%. Liquid recovery fractions increased with increasing relative pressure, ranging from 0.11 for methylene chloride (P/P[sub sat]=2.1×10[sup -3]) to greater than 0.80 for MPK (P/P[sub sat]=2.2×10[sup -2]). The electrical energy consumed during regeneration per mol of liquid organic compound recovered decreased with increasing relative pressure of the inlet gas stream, ranging from 4,698 kJ/mol for methylene chloride to 327 kJ/mol for MPK. Equilibrium ACFC adsorption capacity, throughput ratio, and length of unused bed were also evaluated. These results are encouraging for the development of a new technology to capture and readily recover a wide range of organic vapors from air streams. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Environmental Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VOLATILE organic compounds KW - ACTIVATED carbon KW - METHYL ethyl ketone KW - ABSORPTION KW - AIR pollution KW - ENVIRONMENTAL engineering KW - Activated carbon filters KW - Adsorption KW - Regneration N1 - Accession Number: 12297924; Dombrowski, Katherine D. 1 Lehmann, Christopher M.B. 2 Sullivan, Patrick D. 3 Ramirez, David 2 Rood, Mark J. 2 Hay, K. James 4; Affiliation: 1: URS Corporation, Austin, TX 2: Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign 3: Air Force Research Laboratory, AFRL/MLQF, FL 4: Construction Engineering Research Lab, U.S. Army Corps of Engineers, IL; Source Info: Mar2004, Vol. 130 Issue 3, p268; Subject Term: VOLATILE organic compounds; Subject Term: ACTIVATED carbon; Subject Term: METHYL ethyl ketone; Subject Term: ABSORPTION; Subject Term: AIR pollution; Subject Term: ENVIRONMENTAL engineering; Author-Supplied Keyword: Activated carbon filters; Author-Supplied Keyword: Adsorption; Author-Supplied Keyword: Regneration; NAICS/Industry Codes: 325998 All Other Miscellaneous Chemical Product and Preparation Manufacturing; NAICS/Industry Codes: 325999 All other miscellaneous chemical product manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1061/(ASCE)0733-9372(2004)130:3(268) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12297924&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roark, Shane E. AU - Cabrera-Fonseca, Jimena AU - Milazzo, Michael C. AU - White, James H. AU - Wander, Joseph D. T1 - Catalytic Oxidation of Volatile Organic Liquids. JO - Journal of Environmental Engineering JF - Journal of Environmental Engineering Y1 - 2004/03// VL - 130 IS - 3 M3 - Article SP - 329 EP - 337 PB - American Society of Civil Engineers SN - 07339372 AB - Metal oxide and supported-Pt catalysts were developed for complete oxidation of volatile organic compounds (VOCs) and other solvent-derived organic vapors (OVs) in air at relatively low temperatures. The goal for this work is to produce a simple, cost-effective technology for reducing the concentration of organic contaminants in air to acceptable levels before the air is released into the atmosphere or recirculated. Specific applications include ventilated work spaces for spray painting and engine maintenance, indoor air decontamination, dry cleaning, food processing, fume hoods, residential use, and solvent-intensive industrial processes. Catalyst powders and monolith-supported catalysts were screened for conversion of 1-butanol, toluene, and methyl ethyl ketone to carbon dioxide and water. The concentration of OVs in the feedstream was maintained at approximately 100 ppmv, and the space velocity was between 6,000 and 18,000 h-1. Metal oxide catalysts without Pt generated complete conversion of 1-butanol to CO[sub 2] at 150°C, 69% conversion at 100°C, and 15% conversion at 80°C. For toluene, complete conversion was achieved at 200°C, and greater than 75% conversion at 150°C. Addition of Pt to the metal oxide compositions typically lowered the temperature for a given OV oxidation rate by at least 20–50°C. Catalysts deposited onto standard commercial cordierite monoliths retained their composition and activity, and were stable in humid air, as well as nitrogen- and chlorine-containing OVs. However, the catalysts quickly deactivated in the presence of sulfur and phosphorus. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Environmental Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VOLATILE organic compounds KW - METALLIC oxides KW - CATALYSTS KW - OXIDATION KW - LOW temperatures KW - ENVIRONMENTAL engineering KW - Abatement and removal KW - Oxidation KW - Volatile organic chemicals N1 - Accession Number: 12297917; Roark, Shane E. 1 Cabrera-Fonseca, Jimena 2 Milazzo, Michael C. 2 White, James H. 2 Wander, Joseph D. 3; Affiliation: 1: Advanced Chemical Processing, Eltron Research, Inc., Boulder, CO 2: Eltron Research, Inc., Boulder, CO 3: Air Force Research Laboratory, AFRL/MLQF, FL; Source Info: Mar2004, Vol. 130 Issue 3, p329; Subject Term: VOLATILE organic compounds; Subject Term: METALLIC oxides; Subject Term: CATALYSTS; Subject Term: OXIDATION; Subject Term: LOW temperatures; Subject Term: ENVIRONMENTAL engineering; Author-Supplied Keyword: Abatement and removal; Author-Supplied Keyword: Oxidation; Author-Supplied Keyword: Volatile organic chemicals; Number of Pages: 9p; Document Type: Article L3 - 10.1061/(ASCE)0733-9372(2004)130:3(329) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12297917&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sarkisov, Sergey S. AU - Radovanova, Elena I. AU - Peterson, Burl H. AU - Leydermant, Alex AU - Curley, Michael AU - Fleitz, Paul A. T1 - OPTICAL SPECTROSCOPY AND NONLINEAR TRANSMITTANCE STUDY OF FULLERENE C60 IN MIXTURES WITH 2-CYCLOOCTYLAMINO-5-NITROPYRIDINE (COANP). JO - Journal of Nonlinear Optical Physics & Materials JF - Journal of Nonlinear Optical Physics & Materials Y1 - 2004/03// VL - 13 IS - 1 M3 - Article SP - 113 EP - 127 PB - World Scientific Publishing Company SN - 02188635 AB - Characterization of the infrared absorption spectrum of the solutions of fullerene C60 with 2-cyclooctylamino-5-nitropyridine additive has been performed with the focus on possible bonding with the amino-group of the additive. No occurrence of such bonding was found at normal conditions. Also no change of optical absorption in visible region and optical limiting of fullerene due to chemical bonding with the additive was detected. The resulting optical properties of the mixture were simply a sum of the properties of the components for a. molar proportion of the additive to fullerene approaching 200:1. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Nonlinear Optical Physics & Materials is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRUM analysis KW - FULLERENES KW - CHEMICALS KW - OPTICAL properties KW - SEALING (Technology) KW - MIXTURES KW - amino-compounds KW - COANP KW - Fullerene KW - infrared spectroscopy KW - optical limiting N1 - Accession Number: 12918785; Sarkisov, Sergey S. 1; Email Address: ssarkisov@aamu.edu Radovanova, Elena I. 1; Email Address: radeli200@mail.ru Peterson, Burl H. 2 Leydermant, Alex 3 Curley, Michael 1; Email Address: mcurley@aarnu.edu Fleitz, Paul A. 4; Affiliation: 1: Alabama Agricultural and Mechanical University, Department of Physics, 4900 Meridian St., P.O. Box 1268, Normal, Alabama 35762-1268, USA 2: A. F. Ioffe Physico-Technical Institute RAN, 26 Polytekhnicheskaya, St. Petersburq 194291, Russia 3: Department of Physics, University of Puerto-Rico at Mayaguez, Puerto-Rico 00680 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 4 5433-7702, USA; Source Info: Mar2004, Vol. 13 Issue 1, p113; Subject Term: SPECTRUM analysis; Subject Term: FULLERENES; Subject Term: CHEMICALS; Subject Term: OPTICAL properties; Subject Term: SEALING (Technology); Subject Term: MIXTURES; Author-Supplied Keyword: amino-compounds; Author-Supplied Keyword: COANP; Author-Supplied Keyword: Fullerene; Author-Supplied Keyword: infrared spectroscopy; Author-Supplied Keyword: optical limiting; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; Number of Pages: 15p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12918785&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Troe AU - J. AU - Viggiano AU - A. A. AU - Williams AU - S. T1 - The Reaction of O2+ + C8H10 (Ethylbenzene) as a Function of Pressure and Temperature. 2. Analysis of Collisional Energy Transfer of Highly Excited C8H10+. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2004/03// VL - 108 IS - 9 M3 - Article SP - 1574 EP - 1581 SN - 10895639 AB - The pressure and temperature dependence of the stabilization vs dissociation yield of chemically activated ethylbenzene ions from the charge-transfer reaction O2+ + C8H10 → O2 + C8H10+ is analyzed. Combining the measured data with experimental specific rate constants, k(E), for dissociation of ethylbenzene ions from the literature allows absolute values of the product Z〈ΔE〉 for energy transfer in the buffer gases He and N2 to be derived. By assigning the collision frequency Z to the Langevin rate constant, the average energies transferred per collision 〈ΔE〉 for highly excited C8H10+ are obtained. They are close to the corresponding values for neutral alkylbenzenes. k(E) shows a transition from values given by phase space theory at low energies to values arising from an anisotropic valence potential at higher energies. The charge transfer process is analyzed in terms of resonant charge transfer, charge transfer through ethylbenzene-O2+ complexes, and charge transfer producing electronically excited O2 molecules, with the former being exploited for the described study of collisional energy transfer. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ETHYLBENZENE KW - DISSOCIATION (Chemistry) KW - CHARGE transfer KW - EXCITED state chemistry N1 - Accession Number: 12400985; Troe J. 1 Viggiano A. A. 1 Williams S. 1; Affiliation: 1: Institute for Physical Chemistry, University of Goettingen, Tammannstrasse 6, D-37077 Goettingen, Germany, and Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Rd., Hanscom AFB, Massachusetts 01731-3010; Source Info: Mar2004, Vol. 108 Issue 9, p1574; Subject Term: ETHYLBENZENE; Subject Term: DISSOCIATION (Chemistry); Subject Term: CHARGE transfer; Subject Term: EXCITED state chemistry; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12400985&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Neiberg, Michael T1 - Doughboys, the Great War, and the Remaking of America (Book). JO - Journal of Social History JF - Journal of Social History Y1 - 2004///Spring2004 VL - 37 IS - 3 M3 - Book Review SP - 778 EP - 780 PB - Oxford University Press / USA SN - 00224529 AB - Reviews the book "Doughboys, the Great War, and the Remaking of America," by Jennifer D. Keene. KW - WORLD War, 1914-1918 KW - NONFICTION KW - KEENE, Jennifer D. KW - DOUGHBOYS, the Great War & the Remaking of America (Book) N1 - Accession Number: 12612412; Neiberg, Michael 1; Affiliation: 1: United States Air Force Academy; Source Info: Spring2004, Vol. 37 Issue 3, p778; Subject Term: WORLD War, 1914-1918; Subject Term: NONFICTION; Reviews & Products: DOUGHBOYS, the Great War & the Remaking of America (Book); People: KEENE, Jennifer D.; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12612412&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mullis, Tony R. T1 - The Dispersal of the Topeka Legislature. JO - Kansas History JF - Kansas History Y1 - 2004///Spring/Summer2004 VL - 27 IS - 1/2 M3 - Article SP - 62 EP - 75 PB - Kansas State Historical Society SN - 01499114 AB - Analyzes the dispersal of the free-state legislature by the U.S. Army in Topeka, Kansas on July 4, 1856. Examination of how the army functioned as a command and control force during the political crises of the 1850s; Illustration of the chain of command for troops in Kansas during the period; Initiatives launched to resolve the violence in Kansas. KW - HISTORY KW - LEGISLATIVE bodies KW - COMMANDO troops KW - REPRESENTATIVE government KW - 1854-1861 KW - KANSAS -- Politics & government KW - UNITED States. Army KW - TOPEKA (Kan.) KW - KANSAS KW - UNITED States KW - UNITED States. Army -- Commando troops N1 - Accession Number: 13095316; Mullis, Tony R. 1; Affiliation: 1: Member, International Security and Military Studies Department, United States Air Force, Air University, Air Command and Staff College, Montgomery, Alamaba; Source Info: Spring/Summer2004, Vol. 27 Issue 1/2, p62; Subject Term: HISTORY; Subject Term: LEGISLATIVE bodies; Subject Term: COMMANDO troops; Subject Term: REPRESENTATIVE government; Subject Term: 1854-1861; Subject Term: KANSAS -- Politics & government; Subject Term: UNITED States. Army; Subject Term: TOPEKA (Kan.); Subject Term: KANSAS; Subject Term: UNITED States; Company/Entity: UNITED States. Army -- Commando troops; NAICS/Industry Codes: 921120 Legislative Bodies; Number of Pages: 14p; Illustrations: 7 Black and White Photographs, 1 Diagram; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13095316&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Clark, S.J AU - Barnhart, C AU - Kolitz, S.E T1 - Large-scale optimization planning methods for the distribution of United States army munitions JO - Mathematical & Computer Modelling JF - Mathematical & Computer Modelling Y1 - 2004/03// VL - 39 IS - 6-8 M3 - Article SP - 697 EP - 714 SN - 08957177 AB - Coordinating the distribution of ammunition and scheduling strategic transportation resources during military contingency operations is a complex process. This paper presents a large-scale optimization-based planning method that uses column generation to schedule the movement of ammunition and transportation resources through a time-space network representation of the distribution system. The optimization-based planner is initialized using a feasible solution generated by a heuristic planning method. Both the optimization-based planner and the heuristic planner generate plans with improved ship utilization and delivery tardiness values as compared to plans generated using current planning techniques. In addition, the heuristic planner is implemented within a closed-loop planning and control framework, and is used to generate plans on a rolling horizon basis. [Copyright &y& Elsevier] AB - Copyright of Mathematical & Computer Modelling is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY supplies KW - MILITARY weapons KW - MATHEMATICAL optimization KW - UNITED States KW - Ammunition KW - Distribution KW - Large-scale KW - Sealift KW - Optimization KW - Scheduling N1 - Accession Number: 13955273; Clark, S.J 1; Email Address: steven.clark@wpafb.af.mil Barnhart, C 2 Kolitz, S.E 3; Email Address: kolitz@draper.com; Affiliation: 1: United States Air Force Materiel Command, Management Sciences Division 4375 Chidlaw Road, Room B204, Wright-Patterson AFB, OH 45431, USA 2: Massachusetts Institute of Technology 77 Massachusetts Avenue, Bldg. E40-149 Cambridge, MA 02139, USA 3: The Charles Stark Draper Laboratory, Inc. 555 Technology Square, Cambridge, MA 02139, USA; Source Info: Mar2004, Vol. 39 Issue 6-8, p697; Subject Term: MILITARY supplies; Subject Term: MILITARY weapons; Subject Term: MATHEMATICAL optimization; Subject Term: UNITED States; Author-Supplied Keyword: Ammunition; Author-Supplied Keyword: Distribution; Author-Supplied Keyword: Large-scale; Author-Supplied Keyword: Sealift; Author-Supplied Keyword: Optimization; Author-Supplied Keyword: Scheduling; Language of Keywords: English; Language of Keywords: German; Number of Pages: 18p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13955273&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nielsen, C.A AU - Armacost, A.P AU - Barnhart, C AU - Kolitz, S.E T1 - Network design formulations for scheduling U.S. Air Force channel route missions JO - Mathematical & Computer Modelling JF - Mathematical & Computer Modelling Y1 - 2004/03// VL - 39 IS - 6-8 M3 - Article SP - 925 EP - 943 SN - 08957177 AB - Each month, the United States Air Force''s Air Mobility Command is responsible for designing a large-scale air mobility network—called the channel route network—that is used to transport military personnel and cargo throughout the world. Traditionally, planning the channel route network has been a manual process, requiring numerous hours to generate a monthly channel route schedule. We formulate the monthly channel route scheduling problem using a traditional network design formulation, and we use price-directive decomposition to overcome tractability issues. The resulting linear programming bounds on the optimal integer solution are weak. To overcome these challenges, we apply a variable redefinition technique known as composite variable modelling. Using this technique, we alleviate the need to explicitly include cargo flow decisions by implicitly capturing them in the design variables. The resulting formulation is computationally superior to the traditional network design formulation because it achieves tighter bounds, allowing excellent integer solutions to be found quickly. [Copyright &y& Elsevier] AB - Copyright of Mathematical & Computer Modelling is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MILITARY airlift KW - MILITARY transportation KW - UNITED States KW - Airlift KW - Composite variables KW - Large-scale optimization KW - Mixed-integer programming KW - Network design KW - UNITED States. Air Force N1 - Accession Number: 13955286; Nielsen, C.A 1; Email Address: cnielsen@alum.mit.edu Armacost, A.P 2; Email Address: andy.armacost@usafa.edu Barnhart, C 3 Kolitz, S.E 4; Affiliation: 1: Air Force Studies and Analyses Agency 1570 Air Force Pentagon Washington, DC 20330-1570, USA 2: United States Air Force Academy, Department of Management 2354 Fairchild Drive, Rm. 6H128, USAF Academy, CO 80840, USA 3: Massachusetts Institute of Technology Center for Transportation and Logistics 77 Massachusetts Avenue, Bldg. E40-149, Cambridge, MA 02139, USA 4: The Charles Stark Draper Laboratory, Inc. 555 Technology Square, Cambridge, MA 02139, USA; Source Info: Mar2004, Vol. 39 Issue 6-8, p925; Subject Term: MILITARY airlift; Subject Term: MILITARY transportation; Subject Term: UNITED States; Author-Supplied Keyword: Airlift; Author-Supplied Keyword: Composite variables; Author-Supplied Keyword: Large-scale optimization; Author-Supplied Keyword: Mixed-integer programming; Author-Supplied Keyword: Network design; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 19p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13955286&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schoeppner, G. A. AU - Mollenhauer, D. H. AU - Iarve, E. V. T1 - Prediction and Measurement of Residual Strains for a Composite Bonded Joint. JO - Mechanics of Composite Materials JF - Mechanics of Composite Materials Y1 - 2004/03//Mar/Apr2004 VL - 40 IS - 2 M3 - Article SP - 119 EP - 134 PB - Springer Science & Business Media B.V. SN - 01915665 AB - A quasi-isotropic composite laminate/adherend of IM6/3501-6 and a composite bonded specimen were manufactured and tested. The bonded specimen was fabricated by postbonding composite adherends together using a 177°C adhesive resin. Predictions for the residual curing strains in the composite adherends and the adhesively bonded composite specimen were performed using a thermomechanical linearly elastic analysis. The analysis was performed using a computer program based on a polynomial spline displacement approximation method [1]. The residual strains of the specimens were measured using the moiré interferometry technique. Diffraction gratings were replicated at room temperature onto the edges of polished laminated adherends and on the edge of a fully cured adhesively bonded specimen. The specimens were cut through their entire thickness in the middle of the diffraction grating area, resulting in a redistribution of the residual curing stresses, with corresponding changes in the strain field at the edges of the cut. A full-field deformation pattern was obtained in the grating area by analyzing the recorded fringe patterns. The deformation field induced by the cut in the laminated adherends and the adhesive bondline were estimated by the linear thermomechanical analysis. A good agreement between the analysis and the experimental results was obtained. [ABSTRACT FROM AUTHOR] AB - Copyright of Mechanics of Composite Materials is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESIDUAL stresses KW - DEFORMATIONS (Mechanics) KW - METALS -- Fatigue KW - STRAINS & stresses (Mechanics) KW - COMPOSITE materials KW - INTERFEROMETRY KW - bonded joints KW - composite laminate KW - moiré interferometry KW - moiré interferometry KW - residual strains KW - residual stresses KW - three-dimensional analysis N1 - Accession Number: 17010135; Schoeppner, G. A. 1 Mollenhauer, D. H. 1 Iarve, E. V. 2; Affiliation: 1: Air Force Research Laboratory, WPAFB OH 45433-7750 2: University of Dayton Research Institute, Dayton OH 45469; Source Info: Mar/Apr2004, Vol. 40 Issue 2, p119; Subject Term: RESIDUAL stresses; Subject Term: DEFORMATIONS (Mechanics); Subject Term: METALS -- Fatigue; Subject Term: STRAINS & stresses (Mechanics); Subject Term: COMPOSITE materials; Subject Term: INTERFEROMETRY; Author-Supplied Keyword: bonded joints; Author-Supplied Keyword: composite laminate; Author-Supplied Keyword: moiré interferometry; Author-Supplied Keyword: moiré interferometry; Author-Supplied Keyword: residual strains; Author-Supplied Keyword: residual stresses; Author-Supplied Keyword: three-dimensional analysis; Number of Pages: 16p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17010135&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cook, Martin L. T1 - The Peloponnesian War (Book). JO - Parameters: U.S. Army War College JF - Parameters: U.S. Army War College Y1 - 2004///Spring2004 VL - 34 IS - 1 M3 - Book Review SP - 127 EP - 128 SN - 00311723 AB - Reviews the book "The Peloponnesian War," by Donald D. Kagan. KW - WAR KW - NONFICTION KW - KAGAN, Donald D. KW - PELOPONNESIAN War, The (Book) N1 - Accession Number: 12677076; Cook, Martin L. 1; Affiliation: 1: Professor of Philosophy, US Air Force Academy.; Source Info: Spring2004, Vol. 34 Issue 1, p127; Subject Term: WAR; Subject Term: NONFICTION; Reviews & Products: PELOPONNESIAN War, The (Book); People: KAGAN, Donald D.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12677076&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Semiatin, S.L. AU - Fagin, P.N. AU - Glavicic, M.G. AU - Raabe, D. T1 - Deformation behavior of Waspaloy at hot-working temperatures JO - Scripta Materialia JF - Scripta Materialia Y1 - 2004/03// VL - 50 IS - 5 M3 - Article SP - 625 SN - 13596462 AB - Isothermal, hot-compression tests were conducted on single crystals of a typical nickel-base superalloy, Waspaloy, to establish the slip systems that operate during hot working. Slip-trace analysis and flow-curve measurements revealed that deformation occurred via classical octahedral ({1 1 1}〈1 1¯ 0〉) slip. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALS KW - NICKEL alloys KW - HEAT resistant alloys KW - DEFORMATIONS (Mechanics) KW - Deformation behavior KW - Hot working KW - Slip traces KW - Superalloys N1 - Accession Number: 11729485; Semiatin, S.L. 1; Email Address: lee.semiatin@wpafb.af.mil Fagin, P.N. 2 Glavicic, M.G. 2 Raabe, D. 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, 2230 Tenth Street, Wright-Patterson Air Force Base, OH 45433-7817, USA 2: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 3: Max-Planck-Institut für Eisenforschung, Max-Planck-Str. 1, 40237 Düsseldorf, Germany; Source Info: Mar2004, Vol. 50 Issue 5, p625; Subject Term: CRYSTALS; Subject Term: NICKEL alloys; Subject Term: HEAT resistant alloys; Subject Term: DEFORMATIONS (Mechanics); Author-Supplied Keyword: Deformation behavior; Author-Supplied Keyword: Hot working; Author-Supplied Keyword: Slip traces; Author-Supplied Keyword: Superalloys; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 5p; Document Type: Article L3 - 10.1016/j.scriptamat.2003.11.030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11729485&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ensley, Eric T1 - Honoring Sergeant Carter: Redeeming a Black World War II Hero's Legacy. JO - War, Literature & the Arts: An International Journal of the Humanities JF - War, Literature & the Arts: An International Journal of the Humanities Y1 - 2004/03// VL - 16 IS - 1/2 M3 - Book Review SP - 286 EP - 288 PB - US Air Force Academy English Department SN - 10466967 AB - Reviews the book "Honoring Sergeant Carter: Redeeming a Black World War II Hero's Legacy," by Allene G. Carter and Robert L. Allen. KW - NONFICTION KW - CARTER, Allene G. KW - ALLEN, Robert L. KW - HONORING Sergeant Carter: Redeeming a Black World War II Hero's Legacy (Book) N1 - Accession Number: 16360292; Ensley, Eric 1; Affiliation: 1: United States Air Force Academy.; Source Info: 2004, Vol. 16 Issue 1/2, p286; Subject Term: NONFICTION; Reviews & Products: HONORING Sergeant Carter: Redeeming a Black World War II Hero's Legacy (Book); People: CARTER, Allene G.; People: ALLEN, Robert L.; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16360292&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Knopp, Jeremy AU - Blackshire, James L. AU - Sathish, Shamachary T1 - Models and Methodology for the Characterization of Surface-Breaking Cracks Using an Ultrasonic Near-Field Scattering Measurement. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/02/26/ VL - 700 IS - 1 M3 - Article SP - 87 EP - 94 PB - American Institute of Physics SN - 0094243X AB - Measurements using laser interferometry have been performed to study the displacement response of Rayleigh waves in close proximity to a surface-breaking crack. To gain a better understanding, numerical models for both infinite and finite crack cases were developed. Regions of intensification and decay were found to be highly localized around the crack site, and offer an advanced NDE technique for flaw characterization. Potential near-field measures were proposed and evaluated with respect to variation in crack depth and angle. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ULTRASONIC waves KW - NEAR-field microscopy KW - SCATTERING (Physics) KW - DIFFRACTION patterns KW - COLLISIONS (Physics) KW - INTERFEROMETRY KW - ULTRASONIC testing KW - OPTICAL measurements N1 - Accession Number: 12817376; Aldrin, John C. 1 Knopp, Jeremy 2 Blackshire, James L. 2 Sathish, Shamachary 3; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA 3: University of Dayton Research Institute, Dayton, OH 45469, USA; Source Info: 2004, Vol. 700 Issue 1, p87; Subject Term: ULTRASONIC waves; Subject Term: NEAR-field microscopy; Subject Term: SCATTERING (Physics); Subject Term: DIFFRACTION patterns; Subject Term: COLLISIONS (Physics); Subject Term: INTERFEROMETRY; Subject Term: ULTRASONIC testing; Subject Term: OPTICAL measurements; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.1711610 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12817376&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hassan, W. AU - Bondok, M. AU - Bondok, S. T1 - Numerical Analysis of the Rayleigh Wave Dispersion Due to Surface Roughness. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/02/26/ VL - 700 IS - 1 M3 - Article SP - 262 EP - 269 PB - American Institute of Physics SN - 0094243X AB - Recent interest in applications like the measurement of compressive surface residual stresses due to shot peening using Rayleigh type surface acoustic waves have brought into the spot light the adverse effects surface roughness might have on such measurements. Surface roughness produces significant dispersion of the Rayleigh wave used in the measurements. Therefore an accurate understanding of the effect of surface roughness on the dispersion of Rayleigh waves is of crucial importance for this application and others in which surface roughness is a natural by-product of the manufacturing processes used to produce the part. In this paper, the dispersion of Rayleigh surface wave on a 2D-randomly-rough surface is studied numerically using Wave2000Pro, finite difference wave propagation simulation software. First the dispersion of the wave due to the discretization of the model is investigated to establish the accuracy of the model. Wave 2000Pro is then used to analyze the dispersion of Rayleigh wave propagating on the rough surface. The results of the numerical analysis are then compared to the calculations of Kosachev and Shchegrov. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAYLEIGH waves KW - NUMERICAL analysis KW - RESIDUAL stresses KW - SURFACES (Technology) KW - SURFACE waves (Fluids) KW - SURFACE roughness N1 - Accession Number: 12817353; Hassan, W. 1 Bondok, M. 2 Bondok, S. 3; Affiliation: 1: Honeywell Engines, Systems, and Services, 1944 E., Sky Harbor Circle N., M/S 2101-203 Phoenix, AZ 85034 2: Air Force Research Laboratory (AFRL/MLLP), 2230 10th Street, Suite 1, Dayton, OH 45433 3: Department of Aerospace Eng. and Eng. Mechanics, University of Cincinnati, Rhodes Hall, ML 0070, Cincinnati, OH 45221; Source Info: 2004, Vol. 700 Issue 1, p262; Subject Term: RAYLEIGH waves; Subject Term: NUMERICAL analysis; Subject Term: RESIDUAL stresses; Subject Term: SURFACES (Technology); Subject Term: SURFACE waves (Fluids); Subject Term: SURFACE roughness; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.1711633 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12817353&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Knopp, J. S. AU - Aldrin, J. C. AU - KO, R. T. AU - Sabbagh, H. T1 - Numerical and Experimental Study of Eddy Current Crack Detection around Fasteners in Multi-Layer Structures. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/02/26/ VL - 700 IS - 1 M3 - Article SP - 336 EP - 343 PB - American Institute of Physics SN - 0094243X AB - Previous work on the detection of cracks around fastener holes in multi-layer structures using eddy current NDE has met with some success; however, challenges remain in detecting smaller corner cracks while minimizing false call rates. To address this issue, a 3D model was developed for this problem and successfully validated with experimental data. Using this model, a series of numerical studies were performed to identify potential features for defect classification. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDDY currents (Electric) KW - HOLES KW - NONDESTRUCTIVE testing KW - AIRFRAMES KW - PROBES (Electronic instruments) KW - TESTING N1 - Accession Number: 12817344; Knopp, J. S. 1 Aldrin, J. C. 2 KO, R. T. 3 Sabbagh, H. 4; Affiliation: 1: Air Force Research Laboratory (AFRL/MLLP), Wright-Patterson AFB, OH 45433, USA 2: Computational Tools, Gurnee, IL 60031, USA 3: University of Dayton Research Institute, Dayton, OH 45469, USA 4: Victor Technologies, Bloomington, IN 47401, USA; Source Info: 2004, Vol. 700 Issue 1, p336; Subject Term: EDDY currents (Electric); Subject Term: HOLES; Subject Term: NONDESTRUCTIVE testing; Subject Term: AIRFRAMES; Subject Term: PROBES (Electronic instruments); Subject Term: TESTING; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.1711642 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12817344&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Aldrin, John C. AU - Mandeville, John R. AU - Kropas-Hughes, Claudia V. T1 - Ultrasonic Detection of Cracks in a Complex Aircraft Structure Using a Local Correlation Method for Signals from a Moving Transducer. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/02/26/ VL - 700 IS - 1 M3 - Article SP - 565 EP - 572 PB - American Institute of Physics SN - 0094243X AB - A challenge in nondestructive evaluation is the ability to discern signals that are closely spaced or superimposed in time. A feature extraction methodology is proposed where signals from a moving transducer are accurately aligned to a primary part feature and analyzed within multiple time gates for shifting signals from a defect. The local correlation method functions to detect the relative shift of signals in time for adjacent transducer locations due to differing echo dynamics from cracks and part geometries. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRFRAMES KW - NONDESTRUCTIVE testing KW - SIGNALS & signaling KW - TRANSDUCERS KW - ULTRASONIC testing KW - INTERFACES (Physical sciences) KW - GEOMETRY N1 - Accession Number: 12817315; Aldrin, John C. 1 Mandeville, John R. 2 Kropas-Hughes, Claudia V. 3; Affiliation: 1: Computational Tools, Gurnee, IL 60031, USA 2: SAIC Ultra Image Int., New London, CT 06320, USA 3: Air Force Research Laboratory (AFRL/MLLP), Wright-Patterson AFB, OH 45433, USA; Source Info: 2004, Vol. 700 Issue 1, p565; Subject Term: AIRFRAMES; Subject Term: NONDESTRUCTIVE testing; Subject Term: SIGNALS & signaling; Subject Term: TRANSDUCERS; Subject Term: ULTRASONIC testing; Subject Term: INTERFACES (Physical sciences); Subject Term: GEOMETRY; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.1711672 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12817315&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ananthula, Rajeshwar AU - Ko, Ray T. AU - Sathish, Shamachary AU - Blodgett, Mark T1 - Characterization of Retrogression and Re-Aging Heat Treatment of AA7075-T6 Using Nonlinear Acoustics and Eddy Current. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/02/26/ VL - 700 IS - 1 M3 - Article SP - 1115 EP - 1121 PB - American Institute of Physics SN - 0094243X AB - Nonlinear acoustic parameter and eddy current methods have been utilized to characterize the heat treatment process of retrogression and re-aging of aluminum 7075-T6. The results of nonlinear acoustic parameter measurements show two distinct peaks at 30 minutes and 45 minutes of retrogression time. The phase of the through-thickness eddy current signal shows a minimum at 42 minutes of retrogression time. Application of combined methods for identifying the optimized properties in the material is discussed. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR acoustics KW - EDDY currents (Electric) KW - METALS -- Heat treatment KW - ALUMINUM KW - ALLOYS KW - CORROSION & anti-corrosives N1 - Accession Number: 12817245; Ananthula, Rajeshwar 1 Ko, Ray T. 2 Sathish, Shamachary Blodgett, Mark; Affiliation: 1: Metals, Ceramics, and NDE Division, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 2: Center for Materials Diagnostics, University of Dayton Research Institute, Dayton, Ohio 45469, USA; Source Info: 2004, Vol. 700 Issue 1, p1115; Subject Term: NONLINEAR acoustics; Subject Term: EDDY currents (Electric); Subject Term: METALS -- Heat treatment; Subject Term: ALUMINUM; Subject Term: ALLOYS; Subject Term: CORROSION & anti-corrosives; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 7p; Document Type: Article L3 - 10.1063/1.1711742 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12817245&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martin, Richard W. AU - Reidel, Richard S. AU - Sathish, Shamachary AU - Blodgett, Mark P. T1 - Investigation of local rayleigh wave velocity dispersion due to surface residual stress. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/02/26/ VL - 700 IS - 1 M3 - Article SP - 1192 EP - 1199 PB - American Institute of Physics SN - 0094243X AB - Residual stress induced in materials by surface modification techniques creates a stress gradient very near the top surface. The modified layer can lead to dispersion of Rayleigh surface wave (RSW) velocity. An analysis of the dispersion of RSW is expected to provide a means for nondestructive evaluation of the stress gradient. Small changes in RSW velocity has been measured using an acoustic interferometer based on a three-element focused transducer. Dispersion results on Ti-6Al-4V material of RSW velocity and dispersion in shot-peened samples are presented. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESIDUAL stresses KW - RAYLEIGH waves KW - DISPERSION KW - SURFACE waves (Fluids) KW - NONDESTRUCTIVE testing KW - INTERFEROMETERS KW - TRANSDUCERS N1 - Accession Number: 12817234; Martin, Richard W. 1 Reidel, Richard S. 1 Sathish, Shamachary 1 Blodgett, Mark P. 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0127 2: Air Force Research Laboratory, Metals, Ceramics and NDE Division, 2230 Tenth St., Wright Patterson Air Force Base, Dyton, OH 45433-7817; Source Info: 2004, Vol. 700 Issue 1, p1192; Subject Term: RESIDUAL stresses; Subject Term: RAYLEIGH waves; Subject Term: DISPERSION; Subject Term: SURFACE waves (Fluids); Subject Term: NONDESTRUCTIVE testing; Subject Term: INTERFEROMETERS; Subject Term: TRANSDUCERS; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 334419 Other Electronic Component Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1063/1.1711753 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12817234&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rao, Vittal AU - Barnes, John AU - Ghaffari, Bita AU - Thompson, R. Bruce T1 - Future Directions in Sensors. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/02/26/ VL - 700 IS - 1 M3 - Article SP - 1611 EP - 1619 PB - American Institute of Physics SN - 0094243X AB - There is a growing interest in applications of embedded and integrated sensors to ensure the reliability of structural components. The results of a panel discussion to elucidate future directions and key issues are presented. Views of three organizations, with different missions and objectives, on needs and opportunities are first presented, followed by a summary of general audience discussion. Emphasis is placed on identifying the commonalities and differences in those needs and opportunities. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FORUMS (Discussion & debate) KW - DETECTORS KW - RELIABILITY (Engineering) KW - ENGINEERING instruments KW - EMBEDDED computer systems KW - TECHNOLOGICAL innovations N1 - Accession Number: 12817180; Rao, Vittal 1 Barnes, John 2 Ghaffari, Bita 3 Thompson, R. Bruce 4; Affiliation: 1: Control, Networks & Computational Intelligence Electrical and Communication Systems Division Engineering Directorate National Science Foundation Arlington, VA 2: Nondestructive Evaluation Branch Materials and Manufacturing Directorate Air Force Research Laboratory Wright-Patterson Air Force Base Dayton, OH 3: Physical and Environmental Sciences Department Research and Advanced Engineering Ford Motor Company Deaborn, MI 4: Center for Nondestructive Evaluation Iowa State University Ames, IA; Source Info: 2004, Vol. 700 Issue 1, p1611; Subject Term: FORUMS (Discussion & debate); Subject Term: DETECTORS; Subject Term: RELIABILITY (Engineering); Subject Term: ENGINEERING instruments; Subject Term: EMBEDDED computer systems; Subject Term: TECHNOLOGICAL innovations; NAICS/Industry Codes: 334111 Electronic Computer Manufacturing; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; Number of Pages: 9p; Document Type: Article L3 - 10.1063/1.1711807 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12817180&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shih, H.D. AU - Kinch, M.A. AU - Aqariden, F. AU - Liao, P.K. AU - Dreiske, P.D. AU - Ohlson, M.J. AU - Orent, T.W. AU - Robinson, J.E. AU - Schaake, H.F. AU - Teherani, T.H. AU - Kalma, A.H. AU - Roush, F.M. T1 - Development of high-operating-temperature infrared detectors with gold-doped Hg[sub 0.70]Cd[sub 0.30]Te. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2004/02/23/ VL - 84 IS - 8 M3 - Article SP - 1263 EP - 1265 PB - American Institute of Physics SN - 00036951 AB - Excellent high-operating-temperature infrared photodiodes in the medium-wavelength infrared spectral band with cutoff wavelengths ∼5 μm at 77 K were fabricated on Hg[sub 1-x]Cd[sub x]Te samples (x∼0.30) prepared by liquid-phase epitaxy in a tellurium-melt reactor. The samples were doped with indium to ∼1×10[sup 14] cm[sup -3] and gold to ∼5×10[sup 15] cm[sup -3]. Thick planar diodes (∼80 μm thick) and thin cylindrical diodes (∼10 μm thick) of the n-on-p type were fabricated, and they gave comparable, excellent detector dark values within a factor of two. At 130 K, dark currents as low as 5×10[sup -7] A/cm[sup 2] were obtained. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFRARED detectors KW - HIGH temperatures KW - PHOTODIODES KW - DOPED semiconductors KW - TELLURIUM KW - DIODES N1 - Accession Number: 12292681; Shih, H.D. 1; Email Address: hdshih@drs-irtech.com Kinch, M.A. 1 Aqariden, F. 1 Liao, P.K. 1 Dreiske, P.D. 1 Ohlson, M.J. 1 Orent, T.W. 1 Robinson, J.E. 1 Schaake, H.F. 1 Teherani, T.H. 1 Kalma, A.H. 2 Roush, F.M. 3; Affiliation: 1: DRS Infrared Technologies, L.P., Dallas, Texas 2: SAIC, New Mexico 3: Air Force Research Laboratory, Space Vehicles Directorate, New Mexico; Source Info: 2/23/2004, Vol. 84 Issue 8, p1263; Subject Term: INFRARED detectors; Subject Term: HIGH temperatures; Subject Term: PHOTODIODES; Subject Term: DOPED semiconductors; Subject Term: TELLURIUM; Subject Term: DIODES; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 3p; Illustrations: 1 Diagram, 1 Chart, 3 Graphs; Document Type: Article L3 - 10.1063/1.1650042 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12292681&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fleischmann, Thomas J. AU - Walker, Karen C. AU - Spain, Jim C. AU - Hughes, Joseph B. AU - Morrie Craig, A. T1 - Anaerobic transformation of 2,4,6-TNT by bovine ruminal microbes JO - Biochemical & Biophysical Research Communications JF - Biochemical & Biophysical Research Communications Y1 - 2004/02/20/ VL - 314 IS - 4 M3 - Article SP - 957 SN - 0006291X AB - Degradation of TNT by bovine rumen fluid, a novel source of anaerobic microbes, was investigated. Whole rumen fluid contents were spiked with TNT and incubated for a 24 h time period. Supernatant samples taken at 0, 1, 2, 4, and 24 h were analyzed by reverse-phase HPLC with diode array detection. Within 1 h, TNT was not detectable and reduction products of TNT including 2-hydroxyl-amino-4,6-dinitrotoluene, 4-hydroxylamino-2,6-dinitrotoluene, and 4-amino-2,6-dinitrotoluene were present with smaller amounts of diamino-nitrotoluenes. Within 2 h, only the diamino and dihydroxyamino-nitrotoluene products remained. After 4 h, 2,4-diamino-6-nitrotoluene and 2,4-dihydroxyamino-6-nitrotoluene were the only known molecular species left. At 24 h known UV absorbing metabolites were no longer detected, suggesting further transformation such as complete reduction to triaminotoluene or destruction of the aromatic ring of TNT may have occurred. TNT was not transformed at 24 h in autoclaved and buffered controls. This study presents the first direct evidence of biodegradation of TNT by ruminal microbes. [Copyright &y& Elsevier] AB - Copyright of Biochemical & Biophysical Research Communications is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BACTERIA KW - HIGH performance liquid chromatography KW - METABOLITES KW - BIODEGRADATION KW - Biodegradation KW - Bioremediation KW - Biotransformation KW - Ruminal microbes KW - TNT N1 - Accession Number: 12035836; Fleischmann, Thomas J. 1 Walker, Karen C. 1 Spain, Jim C. 2 Hughes, Joseph B. 3 Morrie Craig, A. 1; Email Address: a.morrie.craig@oregonstate.edu; Affiliation: 1: College of Veterinary Medicine, Oregon State University, Corvallis, OR 97331, USA 2: US Air Force Research Laboratory, Tyndall AFB, FL 32403, USA 3: Department of Civil and Environmental Engineering, Rice University, Houston, TX 77005, USA; Source Info: Feb2004, Vol. 314 Issue 4, p957; Subject Term: BACTERIA; Subject Term: HIGH performance liquid chromatography; Subject Term: METABOLITES; Subject Term: BIODEGRADATION; Author-Supplied Keyword: Biodegradation; Author-Supplied Keyword: Bioremediation; Author-Supplied Keyword: Biotransformation; Author-Supplied Keyword: Ruminal microbes; Author-Supplied Keyword: TNT; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.bbrc.2003.12.193 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12035836&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sinha, Amanda E. AU - Fraga, Carlos G. AU - Prazen, Bryan J. AU - Synovec, Robert E. T1 - Trilinear chemometric analysis of two-dimensional comprehensive gas chromatography–time-of-flight mass spectrometry data JO - Journal of Chromatography A JF - Journal of Chromatography A Y1 - 2004/02/20/ VL - 1027 IS - 1/2 M3 - Article SP - 269 SN - 00219673 AB - Two-dimensional comprehensive gas chromatography (GC×GC) is a powerful instrumental tool in its own right that can be used to analyze complex mixtures, generating selective data that is applicable to multivariate quantitative analysis and pattern recognition. It has been recently demonstrated that by coupling GC×GC to time-of-flight mass spectrometry (TOFMS), a highly selective technique is produced. One separation on a GC×GC/TOFMS provides retention times on two chromatographic columns and a complete mass spectrum for each component within the mixture. In this manuscript, we demonstrate how the selectivity of GC×GC/TOFMS combined with trilinear chemometric techniques such as trilinear decomposition (TLD) and parallel factor analysis (PARAFAC) results in a powerful analytical methodology. Using TLD and PARAFAC, partially resolved components in complex mixtures can be deconvoluted and identified using only one data set without requiring either signal shape assumptions or fully selective mass signals. Specifically, a region of overlapped peaks in a complex environmental sample was mathematically resolved with TLD and PARAFAC to demonstrate the utility of these techniques as applied to GC×GC/TOFMS data of a complex mixture. For this data, it was determined that PARAFAC initiated by TLD performed a better deconvolution than TLD alone. After deconvolution, mass spectral profiles were then matched to library spectra for identification. A standard addition analysis was performed on one of the deconvoluted analytes to demonstrate the utility of TLD-initiated PARAFAC for quantification without the need for accurate retention time alignment between sample and standard data sets. [Copyright &y& Elsevier] AB - Copyright of Journal of Chromatography A is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS chromatography KW - TRILINEAR forms KW - COMPLEX compounds KW - ANALYTICAL chemistry KW - PATTERN perception KW - Chemometrics KW - comprehensive two-dimensional (Gas chromatography) KW - Deconvolution KW - Parallel factor analysis N1 - Accession Number: 11883449; Sinha, Amanda E. 1 Fraga, Carlos G. 2 Prazen, Bryan J. 1 Synovec, Robert E. 1; Email Address: synovec@chem.washington.edu; Affiliation: 1: Department of Chemistry, Center for Process Analytical Chemistry, Box 351700, University of Washington, Seattle, WA 98195-1700, USA 2: Department of Chemistry, 2355 Fairchild Dr. Suite 2N225, United States Air Force Academy, Colorado Springs, CO 80840-6230, USA; Source Info: Feb2004, Vol. 1027 Issue 1/2, p269; Subject Term: GAS chromatography; Subject Term: TRILINEAR forms; Subject Term: COMPLEX compounds; Subject Term: ANALYTICAL chemistry; Subject Term: PATTERN perception; Author-Supplied Keyword: Chemometrics; Author-Supplied Keyword: comprehensive two-dimensional (Gas chromatography); Author-Supplied Keyword: Deconvolution; Author-Supplied Keyword: Parallel factor analysis; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.chroma.2003.08.081 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11883449&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ongstad, A. P. AU - Kaspi, R. AU - Moeller, C. E. AU - Tilton, M. L. AU - Chavez, J. R. AU - Dente, G. C. T1 - Gain and loss in an optically pumped mid-infrared laser. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/02/15/ VL - 95 IS - 4 M3 - Article SP - 1619 EP - 1624 PB - American Institute of Physics SN - 00218979 AB - We report on measurements of the temperature dependence of the gain and internal waveguide loss of a 3.4 μm, optically pumped InAs/InGaSb, type II, W laser. A high-resolution Fourier transform infrared spectrometer was used to measure the laser mode spectra below threshold. To obtain an accurate determination of the gain, a full-curve fit to the spectral output of the Fabry–Pérot cavity was utilized. Our results indicate very low waveguide loss (a≈3 cm[sup -1]) at 78 K, with no apparent increase up to at least 120 K. Additional measurements of the gain properties of the device reveal a rapidly decreasing differential gain (dG/dP) and a rapidly increasing transparency pump power with increasing temperature. Moreover, measurements of the peak gain at constant pumping show a rapid decline with increasing temperature. Theoretical superlattice-empiricalpseudopotential-model-based calculations suggest that the substantial differences between the conduction and valence subband in-plane curvatures contribute to the rapid decline in gain with increasing temperature. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TEMPERATURE KW - WAVEGUIDES KW - LASERS KW - CHEMICAL elements KW - FOURIER analysis KW - SUPERLATTICES N1 - Accession Number: 12105282; Ongstad, A. P. 1; Email Address: andrew.ongstad@kirtland.af.mil Kaspi, R. 1 Moeller, C. E. 1 Tilton, M. L. 2 Chavez, J. R. 2 Dente, G. C. 3; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, Albuquerque, New Mexico 87117 2: Boeing Defense and Space Group, Albuquerque, New Mexico 87106 3: GCD Associates, Albuquerque, New Mexico 87106; Source Info: 2/15/2004, Vol. 95 Issue 4, p1619; Subject Term: TEMPERATURE; Subject Term: WAVEGUIDES; Subject Term: LASERS; Subject Term: CHEMICAL elements; Subject Term: FOURIER analysis; Subject Term: SUPERLATTICES; Number of Pages: 6p; Illustrations: 1 Diagram, 6 Graphs; Document Type: Article L3 - 10.1063/1.1635975 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12105282&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tringe, J. W. AU - Uhlman, T. A. AU - Oliver, A. S. AU - Houston, J. E. T1 - Erratum: “A single asperity study of Au/Au electrical contacts” [J. Appl. Phys. 93, 4661 (2003)]. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/02/15/ VL - 95 IS - 4 M3 - Correction notice SP - 2196 EP - 2196 PB - American Institute of Physics SN - 00218979 AB - Presents a correction of the article "A Single Asperity of Au/Au Electrical Contracts," published in the 2003 issue of the "Journal of Applied Physics." KW - ELECTRIC resistance N1 - Accession Number: 12105189; Tringe, J. W. 1 Uhlman, T. A. 1 Oliver, A. S. 2 Houston, J. E. 2; Affiliation: 1: U.S Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 2: Sandia National Laboratories, Albuquerque, New Mexico; Source Info: 2/15/2004, Vol. 95 Issue 4, p2196; Subject Term: ELECTRIC resistance; Number of Pages: 1p; Document Type: Correction notice L3 - 10.1063/1.1641958 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12105189&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Saksena, Radhika S. AU - Woodcock, Leslie V. AU - Maguire, John F. T1 - New approach to molecular dynamics for a non-pairwise Hamiltonian. JO - Molecular Physics JF - Molecular Physics Y1 - 2004/02/10/ VL - 102 IS - 3 M3 - Article SP - 259 EP - 266 SN - 00268976 AB - In order to be able to simulate complex systems of non-pairwise additive interactions, a new computational approach, n th nearest neighbour network (n-NNN), has been proposed. In this new method, the continuous force acting on the central atom from its neighbours is a discretized multidimensional function based on the positions of the neighbours and stored in the computer memory. The memorized force is reused if an identical cluster neighbourhood is encountered once again. Here, the performance of the new method is evaluated for the 12-6 Lennard-Jones fluid and found to give reasonably accurate values for the thermodynamic properties. The algorithm is just as fast with many-body forces, as it is with pairwise additivity. The efficiency of the algorithm is demonstrated by applying it to MD simulations that explicitly incorporate three-body forces, and then comparing the computer time with the same simulation performed with conventional MD methods. The new n-NNN approach, although fast and accurate, is dependent on large amounts of computer memory. Suggestions are made to further improve the method. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Physics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR dynamics KW - THERMODYNAMICS KW - HAMILTONIAN systems KW - GRANULAR materials KW - MOLECULAR beams KW - PHYSICAL & theoretical chemistry N1 - Accession Number: 12827557; Saksena, Radhika S. 1 Woodcock, Leslie V. 1; Email Address: Les.Woodcock@umist.ac.uk Maguire, John F. 2; Affiliation: 1: Department of Chemistry, UMIST, Manchester M60 IQD, UK 2: Materials Research Directorate, US Air Force Research Laboratory, WPAFB, Dayton, Ohio 45433, USA; Source Info: 2/10/2004, Vol. 102 Issue 3, p259; Subject Term: MOLECULAR dynamics; Subject Term: THERMODYNAMICS; Subject Term: HAMILTONIAN systems; Subject Term: GRANULAR materials; Subject Term: MOLECULAR beams; Subject Term: PHYSICAL & theoretical chemistry; Number of Pages: 8p; Document Type: Article L3 - 10.1080/0026897032000174245 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12827557&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Glavicic, M.G. AU - Salem, A.A. AU - Semiatin, S.L. T1 - X-ray line-broadening analysis of deformation mechanisms during rolling of commercial-purity titanium JO - Acta Materialia JF - Acta Materialia Y1 - 2004/02/09/ VL - 52 IS - 3 M3 - Article SP - 647 SN - 13596454 AB - X-ray line-broadening techniques were used to establish deformation mechanisms in textured commercial purity (CP) titanium specimens that were rolled at various temperatures. The results indicated that conventional line-broadening techniques developed specifically for polycrystalline powders could be used on textured materials to deduce the slip-system activity and dislocation density that develop during thermomechanical processing if appropriate averaging procedures are followed. The deduced slip-system activity and densities revealed a transition in deformation behavior from a heavily-twinned to an untwinned mode with an increase in deformation temperature for CP titanium. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEFORMATIONS (Mechanics) KW - TITANIUM KW - X-rays KW - POLYCRYSTALS KW - CHEMICALS -- Purification KW - EBSD KW - Line broadening KW - Substructure KW - Texture KW - Titanium N1 - Accession Number: 12039525; Glavicic, M.G. 1,2; Email Address: Rivglav@msn.com Salem, A.A. 1,3 Semiatin, S.L. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMP, Wright-Patterson AFB, OH 45433-7817, USA 2: UES, Inc., Materials Processing Group, 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 3: UTC, 1270 North Fairfield Rd., Dayton, OH 45432, USA; Source Info: Feb2004, Vol. 52 Issue 3, p647; Subject Term: DEFORMATIONS (Mechanics); Subject Term: TITANIUM; Subject Term: X-rays; Subject Term: POLYCRYSTALS; Subject Term: CHEMICALS -- Purification; Author-Supplied Keyword: EBSD; Author-Supplied Keyword: Line broadening; Author-Supplied Keyword: Substructure; Author-Supplied Keyword: Texture; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.actamat.2003.10.025 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12039525&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kislov, Nikolai AU - Groger, Howard AU - Rengasamy Ponnappan, Howard AU - Caldwell, Edmonia AU - Douglas, Donya AU - Swanson, Theodore T1 - Electrochromic Variable Emittance Devices on Silicon Wafer for Spacecraft Thermal Control. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2004/02/04/ VL - 699 IS - 1 M3 - Article SP - 112 EP - 118 PB - American Institute of Physics SN - 0094243X AB - Small light-weight satellites and space vehicles under development for future NASA missions have reduced thermal mass and are strongly affected by changes in orbital conditions, resulting in large temperature variations. Restrictions on payload weight and volume limit the usefulness of many thermal control technologies. One thermal control approach, being considered by NASA in both nano- and micro- spacecraft applications, involves the use of electrochromic (EC) variable emittance devices (VEDs). VEDs operating in the harsh space environment (UV radiation, atomic oxygen) must be properly protected if they are to reach their design operational life. In this paper, we discuss the design of an all-solid-state EC VED built on a silicon wafer. The silicon wafer serves as a window for IR radiation and protects EC layers from the space environment. This paper also discusses the expected limits of emittance modulation of the EC VED on the silicon substrate as well as possible impact of an antireflective coating on IR emittance modulation. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROCHROMIC devices KW - SILICON KW - SEMICONDUCTOR wafers KW - SPACE vehicles -- Control systems KW - SPACE environment KW - SPACE sciences N1 - Accession Number: 12270767; Kislov, Nikolai 1; Email Address: nick@insytecorp.com Groger, Howard 1 Rengasamy Ponnappan, Howard 2 Caldwell, Edmonia 3 Douglas, Donya 3 Swanson, Theodore 3; Affiliation: 1: Eclipse Energy Systems Inc., St. Petersburg, FL, USA 2: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson, OH, USA 3: NASA-Goddard Space Flight Center, Greenbelt, MD, USA; Source Info: 2004, Vol. 699 Issue 1, p112; Subject Term: ELECTROCHROMIC devices; Subject Term: SILICON; Subject Term: SEMICONDUCTOR wafers; Subject Term: SPACE vehicles -- Control systems; Subject Term: SPACE environment; Subject Term: SPACE sciences; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1063/1.1649564 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12270767&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Neiberg, Michael T1 - Military Education: Past, Present, and Future (Book). JO - American Historical Review JF - American Historical Review Y1 - 2004/02// VL - 109 IS - 1 M3 - Book Review SP - 150 EP - 151 PB - Oxford University Press / USA SN - 00028762 AB - Reviews the book "Military Education: Past, Present, and Future," edited by Gregory C. Kennedy and Keith Neilson. KW - MILITARY education KW - NONFICTION KW - KENNEDY, Gregory C. KW - NEILSON, Keith KW - MILITARY Education: Past, Present & Future (Book) N1 - Accession Number: 12391446; Neiberg, Michael 1; Affiliation: 1: United States Air Force Academy; Source Info: Feb2004, Vol. 109 Issue 1, p150; Subject Term: MILITARY education; Subject Term: NONFICTION; Reviews & Products: MILITARY Education: Past, Present & Future (Book); NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; NAICS/Industry Codes: 611110 Elementary and Secondary Schools; NAICS/Industry Codes: 928110 National Security; People: KENNEDY, Gregory C.; People: NEILSON, Keith; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12391446&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fournier, Diane AU - Halasz, Annamaria AU - Spain, Jim AU - Spanggord, Ronald J. AU - Bottaro, Jeffrey C. AU - Hawari, Jalal T1 - Biodegradation of the Hexahydro-1,3,5-Trinitro-1,3,5-Triazine Ring Cleavage Product 4-Nitro-2,4-Diazabutanal by Phanerochaete chrysosporium. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2004/02// VL - 70 IS - 2 M3 - Article SP - 1123 EP - 1128 SN - 00992240 AB - Initial denitration of hexahydro-l,3,5-trinitro-1,3,5-triazine (RDX) by Rhodococcus sp. strain DN22 produces CO2 and the dead-end product 4-nitro-2,4-diazabutanal (NDAB), OHCNHCH2NHNO2, in high yield. Here we describe experiments to determine the biodegradability of NDAB in liquid culture and soils containing Phanerochaete chrysosporium. A soil sample taken from an ammunition plant contained RDX (342 μmol kg−¹), HMX (octahydro-l,3,5,7-tetranitro-l,3,5,7-tetrazocine; 3,057 μmol kg−¹), MNX (hexahydro-l-nitroso-3,5dinitro-l,3,5-triazine; 155 μmol kg−¹), and traces of NDAB (3.8 μmol kg−¹). The detection of the last in real soil provided the first experimental evidence for the occurrence of natural attenuation that involved ring cleavage of RDX. When we incubated the soil with strain DN22, both RDX and MNX (but not HMX) degraded and produced NDAB (388 ± 22 μmol kg−¹) in 5 days. Subsequent incubation of the soil with the fungus led to the removal of NDAB, with the liberation of nitrous oxide (N2O). In cultures with the fungus alone NDAB degraded to give a stoichiometric amount of N2O. To determine C stoichiometry, we first generated [14C]NDAB in situ by incubating [14C]RDX with strain DN22, followed by incubation with the fungus. The production of 14CO2 increased from 30 (DN22 only) to 76% (fungus). Experiments with pure enzymes revealed that manganese-dependent peroxidase rather than lignin peroxidase was responsible for NDAB degradation. The detection of NDAB in contaminated soil and its effective mineralization by the fungus P. chrysosporium may constitute the basis for the development of bioremediation technologies. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHANEROCHAETE KW - CORTICIACEAE KW - FUNGI KW - FUNGAL remediation KW - BIOREMEDIATION KW - STOICHIOMETRY KW - SOIL microbiology N1 - Accession Number: 12591386; Fournier, Diane 1 Halasz, Annamaria 1 Spain, Jim 2 Spanggord, Ronald J. 3 Bottaro, Jeffrey C. 3 Hawari, Jalal 1; Email Address: jalal.hawari@cnrc-nrc.gc.ca; Affiliation: 1: Biotechnology Research Institute, National Research Council of Canada, Montreal, Quebec H4P 2R2, Canada 2: U.S. Air Force Research Laboratory, Tyndall Air Force Base, Florida 32403 3: SRI International, Menlo Park, California 94025; Source Info: Feb2004, Vol. 70 Issue 2, p1123; Subject Term: PHANEROCHAETE; Subject Term: CORTICIACEAE; Subject Term: FUNGI; Subject Term: FUNGAL remediation; Subject Term: BIOREMEDIATION; Subject Term: STOICHIOMETRY; Subject Term: SOIL microbiology; NAICS/Industry Codes: 562910 Remediation Services; Number of Pages: 6p; Illustrations: 1 Diagram, 1 Chart, 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12591386&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barnum, B.H. AU - Winstead, N.S. AU - Wesely, J. AU - Hakola, A. AU - Colarco, P.R. AU - Toon, O.B. AU - Ginoux, P. AU - Brooks, G. AU - Hasselbarth, L. AU - Toth, B. T1 - Forecasting dust storms using the CARMA-dust model and MM5 weather data JO - Environmental Modelling & Software JF - Environmental Modelling & Software Y1 - 2004/02// VL - 19 IS - 2 M3 - Article SP - 129 EP - 140 SN - 13648152 AB - An operational model for the forecast of dust storms in Northern Africa, the Middle East and Southwest Asia has been developed for the United States Air Force Weather Agency (AFWA). The dust forecast model uses the 5th generation Penn State Mesoscale Meteorology Model (MM5) as input to the University of Colorado CARMA dust transport model. AFWA undertook a 60 day evaluation of the effectiveness of the dust model to make short, medium and long- range (72 h) forecasts of dust storms. The study is unique in using satellite and ground observations of dust storms to score the model’s effectiveness using standard meteorological statistics. Each of the main forecast regions was broken down into smaller areas for more detailed analysis. The study found the forecast model is an effective forecast tool with Probability of Detection of dust storm occurrence exceeding 68 percent over Northern Africa, with a 16 percent False Alarm Rate. Southwest Asia forecasts had average Probability of Detection values of 61 percent with False Alarm Rates averaging 10 percent. [Copyright &y& Elsevier] AB - Copyright of Environmental Modelling & Software is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DUST storms KW - WEATHER KW - NATURAL disasters KW - ARTIFICIAL satellites in telecommunication KW - CARMA model KW - Dust storm forecasting KW - Mineral dust KW - MM5 weather model KW - Skill scores N1 - Accession Number: 22239144; Barnum, B.H. 1; Email Address: ben.barnum@jhuapl.edu Winstead, N.S. 1 Wesely, J. 2 Hakola, A. 2 Colarco, P.R. 3 Toon, O.B. 4 Ginoux, P. 3 Brooks, G. 2 Hasselbarth, L. 1 Toth, B. 1; Affiliation: 1: Johns Hopkins University, Applied Physics Laboratory, Laurel, MD 20723, USA 2: United States Air Force Weather Agency, Offut AFB, NE, USA 3: NASA Goddard Space Flight Center, Greenbelt, MD, USA 4: University of Colorado, PAOS Group, Boulder, CO, USA; Source Info: Feb2004, Vol. 19 Issue 2, p129; Subject Term: DUST storms; Subject Term: WEATHER; Subject Term: NATURAL disasters; Subject Term: ARTIFICIAL satellites in telecommunication; Author-Supplied Keyword: CARMA model; Author-Supplied Keyword: Dust storm forecasting; Author-Supplied Keyword: Mineral dust; Author-Supplied Keyword: MM5 weather model; Author-Supplied Keyword: Skill scores; NAICS/Industry Codes: 517410 Satellite Telecommunications; Number of Pages: 12p; Document Type: Article L3 - 10.1016/S1364-8152(03)00115-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22239144&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Intrator, T. P. AU - Park, Jaeyoung Y. AU - Degnan, James H. AU - Furno, I. AU - Grabowski, Chris AU - Hsu, S. C. AU - Ruden, Edward L. AU - Sanchez, P. G. AU - Taccetti, J. Martin AU - Tuszewski, M. AU - Waganaar, W. J. AU - Wurden, Glen A. AU - Zhang, Shouyin Y. AU - Zhehui Wang T1 - A High-Density Field Reversed Configuration Plasma for Magnetized Target Fusion. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2004/02//Feb2004 Part 1 of 3 VL - 32 IS - 1 M3 - Article SP - 152 EP - 160 SN - 00933813 AB - We describe a program to demonstrate the scientific basis of magnetized target fusion (MTF). MTF is a "potentially low-cost path to fusion which is intermediate in plasma regime between magnetic (MFE) and inertial fusion energy (IFE). MTF involves the Compression of a magnetized target plasma and pressure times volume (PdV) heating to fusion relevant conditions inside a converging flux conserving boundary. We have chosen to demonstrate MTF by using a field-reversed configuration (FRC) as our magnetized target plasma and an imploding metal liner for compression. These choices take advantage of significant past scientific and technical accomplishments in MFE and defense programs research and should yield substantial plasma performance (nr > 1013 s-cm³ T > 5 key) using an available pulsed-power implosion facility at modest cost. We have recently shown the density, temperature, and lifetime of this FRC to be within a factor of 2-3 of that required for use as a suitable target plasma for MIT compression for a fusion demonstration. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASMA (Ionized gases) KW - FUSION (Phase transformation) KW - IONIZED gases KW - PHYSICAL & theoretical chemistry KW - TEMPERATURE KW - PHYSICS KW - Field-reversed configuration KW - fusion energy KW - magnetized target fusion (MTF). N1 - Accession Number: 13120671; Intrator, T. P. 1; Email Address: intrator@lanl.gov Park, Jaeyoung Y. 1 Degnan, James H. 2 Furno, I. 1 Grabowski, Chris 2 Hsu, S. C. 1 Ruden, Edward L. 2 Sanchez, P. G. 1 Taccetti, J. Martin 1 Tuszewski, M. 1 Waganaar, W. J. 1 Wurden, Glen A. 1 Zhang, Shouyin Y. 1 Zhehui Wang 1; Affiliation: 1: P-24 Plasma Physics Group, Los Alamos National Laboratory, Los Alamos, NM 87545 USA. 2: Air Force Research Laboratory, Kirtland, NM 87117 USA.; Source Info: Feb2004 Part 1 of 3, Vol. 32 Issue 1, p152; Subject Term: PLASMA (Ionized gases); Subject Term: FUSION (Phase transformation); Subject Term: IONIZED gases; Subject Term: PHYSICAL & theoretical chemistry; Subject Term: TEMPERATURE; Subject Term: PHYSICS; Author-Supplied Keyword: Field-reversed configuration; Author-Supplied Keyword: fusion energy; Author-Supplied Keyword: magnetized target fusion (MTF).; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TPS.2004.823974 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13120671&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pekarek, Steven D. AU - Wasynczuk, Oleg AU - Walters, Eric A. AU - Jatskevich, Juri V. AU - Lucas, Chalres E. AU - Ning Wu AU - Lamm, Peter T. T1 - An Efficient Multirate Simulation Technique for Power-Electronic-Based Systems. JO - IEEE Transactions on Power Systems JF - IEEE Transactions on Power Systems Y1 - 2004/02// VL - 19 IS - 1 M3 - Article SP - 399 EP - 409 SN - 08858950 AB - A novel multirate method of simulating power-electronic-based systems containing a wide range of time scales is presented. In this method, any suitable integration algorithm, with fixed or variable time-step, can be applied to the fast and/or slow subsystems. The subsystems exchange coupling variables at a communication interval that can be fixed or varied dynamically depending upon the state of the system variables. The proposed multirate method is applied to two example power systems that include power-electronic subsystems. Increases in simulation speed of 183-281% over established single-rate integration algorithms are demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Power Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER simulation KW - ELECTROMECHANICAL analogies KW - NUMERICAL integration KW - NUMERICAL analysis KW - ALGORITHMS KW - ELECTRIC power KW - POWER resources KW - Computer simulation KW - multirate algorithms KW - numerical integration KW - power system modeling. N1 - Accession Number: 12470873; Pekarek, Steven D. 1; Email Address: pekarek@ece.umr.edu Wasynczuk, Oleg 2; Email Address: wasynczu@ecn.purdue.edu Walters, Eric A. 3; Email Address: walters@pcka.com Jatskevich, Juri V. 4; Email Address: jurij@ece.ubc.ca Lucas, Chalres E. 2 Ning Wu 2 Lamm, Peter T. 5; Email Address: peter.lamm@wpafb.af.mil; Affiliation: 1: Department of Electrical and Computer Engineering, University of Missouri Rolla, Rolla, MO 65409 USA. 2: School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47906 USA. 3: PC Krause and Associates, West Lafayette, IN 47906 USA. 4: Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, BC V6T 1W4 Canada. 5: Air Force Research Laboratory, Dayton, OH 45433 USA.; Source Info: Feb2004, Vol. 19 Issue 1, p399; Subject Term: COMPUTER simulation; Subject Term: ELECTROMECHANICAL analogies; Subject Term: NUMERICAL integration; Subject Term: NUMERICAL analysis; Subject Term: ALGORITHMS; Subject Term: ELECTRIC power; Subject Term: POWER resources; Author-Supplied Keyword: Computer simulation; Author-Supplied Keyword: multirate algorithms; Author-Supplied Keyword: numerical integration; Author-Supplied Keyword: power system modeling.; Number of Pages: 11p; Document Type: Article L3 - 10.1109/TPWRS.2003.821452 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12470873&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Tony C. AU - Hostutler, David A. AU - Hager, Gordon D. AU - Heaven, Michael C. AU - McBane, George C. T1 - State-to-state rotational rate constants for CO+He: Infrared double resonance measurements and simulation of the data using the SAPT theoretical potential energy surface. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2004/02//2/1/2004 VL - 120 IS - 5 M3 - Article SP - 2285 EP - 2295 PB - American Institute of Physics SN - 00219606 AB - An extensive data set of 54 time-resolved pump-probe measurements was used to examine CO+He rotational energy transfer within the CO v=2 rotational manifold. Rotational levels in the range J[sub i]=2–9 were excited and collisional energy transfer of population to the levels J[sub f]=1–10 was monitored. The resulting data set was analyzed by fitting to numerical solutions of the master equation. State-to-state rate constant matrices were generated using fitting law functions and ab initio theoretical calculations that employed the SAPT potential energy surface of Heijmen et al. [J. Chem. Phys. 107, 9921 (1997)]. Fitting laws based on the modified exponential gap (MEG), statistical power exponential gap (SPEG), and energy corrected sudden with exponential power (ECS-EP) models all yielded acceptable simulations of the kinetic data, as did the theoretical rate constants. However, the latter were unique in their ability to reproduce both our kinetic data and the pressure broadening coefficients for CO+He. These results provide an impressive demonstration of the quality of the symmetry adapted perturbation theory (SAPT) potential energy surface. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POTENTIAL energy surfaces KW - TIME-resolved spectroscopy KW - ENERGY transfer KW - COLLISIONS (Physics) KW - PERTURBATION (Mathematics) KW - QUANTUM chemistry N1 - Accession Number: 12063156; Smith, Tony C. 1 Hostutler, David A. 1 Hager, Gordon D. 1; Email Address: Gordon.hager@kirtland.af.mil Heaven, Michael C. 2 McBane, George C. 3; Affiliation: 1: Air Force Research Laboratory/Directed Energy Directorate, Kirtland Air Force Base, New Mexico 87117-5776. 2: Department of Chemistry Emory University, Atlanta, Georgia 30322. 3: Department of Chemistry, Grand Valley State University, Allendale, Michigan 49401.; Source Info: 2/1/2004, Vol. 120 Issue 5, p2285; Subject Term: POTENTIAL energy surfaces; Subject Term: TIME-resolved spectroscopy; Subject Term: ENERGY transfer; Subject Term: COLLISIONS (Physics); Subject Term: PERTURBATION (Mathematics); Subject Term: QUANTUM chemistry; Number of Pages: 11p; Illustrations: 3 Charts, 11 Graphs; Document Type: Article L3 - 10.1063/1.1637341 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12063156&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H.J. AU - Grazulis, L. AU - Brown, G.J. AU - Mahalingam, K. AU - Tomich, D.H. T1 - Exploring optimum growth for high quality InAs/GaSb type-II superlattices JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2004/02// VL - 261 IS - 4 M3 - Article SP - 471 SN - 00220248 AB - Fundamental material issues in the growth of InAs/GaSb type-II superlattice (SL) structures using molecular beam epitaxy (MBE) have been addressed. The effect of starting substrate surface morphology on buffer and SL layers was studied using a 51 A˚ InAs/40 A˚ GaSb SL structure. Epi-ready wafers from various manufacturers had significantly different influence on the quality of buffer and SL layers. Intrinsic defects in the substrate from different manufacturing processes formed unique defects in the buffer layer that propagated into and through the SL structure. The growth temperature of a buffer layer was an important factor especially in reducing the defect level in the SL structure as studied by transmission electron microscopy. Correlations of SL layer quality with photoresponse signal strength were made. During a strain balancing process, a dramatic structural degradation was observed with InSb interfaces (IFs) thickness beyond 1.0 monolayer. SL layers with poor structural quality caused by excessive InSb IFs showed zero photoresponse. High quality micron thick, InAs/GaSb SLs with a reduced lattice mismatch were routinely obtained by optimizing growth conditions. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - MOLECULAR beam epitaxy KW - CRYSTAL growth KW - INFRARED detectors KW - A3. Molecular beam epitaxy KW - A3. Superlattices KW - B1. Antimonides KW - B3. Infrared detector N1 - Accession Number: 11884300; Haugan, H.J.; Email Address: heather.haugan@wpafb.af.mil Grazulis, L. 1 Brown, G.J. 1 Mahalingam, K. 1 Tomich, D.H. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7707, USA; Source Info: Feb2004, Vol. 261 Issue 4, p471; Subject Term: SUPERLATTICES; Subject Term: MOLECULAR beam epitaxy; Subject Term: CRYSTAL growth; Subject Term: INFRARED detectors; Author-Supplied Keyword: A3. Molecular beam epitaxy; Author-Supplied Keyword: A3. Superlattices; Author-Supplied Keyword: B1. Antimonides; Author-Supplied Keyword: B3. Infrared detector; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.jcrysgro.2003.09.045 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11884300&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ihle, Roger T1 - First Person Singular. JO - Journal of Electronic Defense JF - Journal of Electronic Defense Y1 - 2004/02// VL - 27 IS - 2 M3 - Article SP - 74 EP - 74 PB - Association of Old Crows SN - 0192429X AB - Part I. Reports on aerial reconnaissance in World War II. Author's training in military communications and selection for a radar school run by the U.S. Air Force and Navy; Training in electronic warfare; Exhibition and demonstration of electronic equipment. KW - AERIAL reconnaissance (Military) KW - WORLD War, 1939-1945 KW - MILITARY communications KW - RADAR KW - MILITARY electronics KW - MILITARY education N1 - Accession Number: 12256280; Ihle, Roger 1; Affiliation: 1: United States Air Force-Reserves; Source Info: Feb2004, Vol. 27 Issue 2, p74; Subject Term: AERIAL reconnaissance (Military); Subject Term: WORLD War, 1939-1945; Subject Term: MILITARY communications; Subject Term: RADAR; Subject Term: MILITARY electronics; Subject Term: MILITARY education; NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; NAICS/Industry Codes: 611110 Elementary and Secondary Schools; NAICS/Industry Codes: 928110 National Security; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12256280&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gilsinn, David E. AU - Ling, Alice V. T1 - Comparative Statistical Analysis of Test Parts Manufactured in Production Environments. JO - Journal of Manufacturing Science & Engineering JF - Journal of Manufacturing Science & Engineering Y1 - 2004/02// VL - 126 IS - 1 M3 - Article SP - 189 EP - 199 SN - 10871357 AB - Estimating error uncertainties arising in production pans IA not a well-understood process. An approach to estimate these uncertainties was developed in this study Machine tool error components were measured on a three-axis vertical machining center. Multiple parts were produced on the measured. machining center then measured on a coordinate measuring machine. Uncertainty models for hole-center to hole-center lengths and orthogonalities were developed rising measured machine tool errors. These estimated uncertainties were compared against measured uncertainties. The main conclusion from the study is that the Law of Propagation of Uncertainties can be used to estimate machining uncertainties. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Manufacturing Science & Engineering is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MACHINE-tools KW - FAULT tolerance (Engineering) KW - QUANTITATIVE research KW - STATISTICS KW - PRODUCTION engineering KW - MACHINING N1 - Accession Number: 12980802; Gilsinn, David E. 1; Email Address: dgilsinn@nist.gov Ling, Alice V. 2; Affiliation: 1: Mathematical and Computational Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD 20899-8910 2: Air Force Research Laboratory Kirtland AFB, NM 87117; Source Info: Feb2004, Vol. 126 Issue 1, p189; Subject Term: MACHINE-tools; Subject Term: FAULT tolerance (Engineering); Subject Term: QUANTITATIVE research; Subject Term: STATISTICS; Subject Term: PRODUCTION engineering; Subject Term: MACHINING; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 333517 Machine Tool Manufacturing; NAICS/Industry Codes: 423830 Industrial Machinery and Equipment Merchant Wholesalers; NAICS/Industry Codes: 333515 Cutting Tool and Machine Tool Accessory Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1115/1.1645876 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12980802&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sherer, Scott E. T1 - Scattering of sound from axisymetric sources by multiple circular cylinders. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2004/02// VL - 115 IS - 2 M3 - Article SP - 488 EP - 496 SN - 00014966 AB - A general analytic method for calculating the scattering of sound by multiple rigid circular cylinders arranged in an arbitrary parallel configuration is presented. The sound scattered by this collection of cylinders is generated by a time-periodic, spatially distributed, axisymmetric source located within the domain of interest. A Hankel transform method is used to calculate the incident field, while separation of variables is used to obtain the scattered fields from each cylinder in the collection. The unknown scattering coefficients are determined through the use of general addition theorems that allows the various fields to be readily transformed between coordinate systems. The method is validated using various two-, three-, and four-cylinder configurations, and the number of coefficients that must be retained in the truncated series is examined. Benchmark configurations consisting of two- and three-cylinder systems with cylinders of varying radii are also presented. These solutions have been used to validate computational aeroacoustic solvers developed for complex geometries. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOUND wave scattering KW - SOUND KW - ACOUSTICAL engineering KW - HANKEL functions KW - CYLINDER (Shapes) N1 - Accession Number: 20565386; Sherer, Scott E. 1; Email Address: Scott.Sherer@wpafb.af.mil; Affiliation: 1: Air Vehicles Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7521; Source Info: Feb2004, Vol. 115 Issue 2, p488; Subject Term: SOUND wave scattering; Subject Term: SOUND; Subject Term: ACOUSTICAL engineering; Subject Term: HANKEL functions; Subject Term: CYLINDER (Shapes); Number of Pages: 9p; Illustrations: 2 Diagrams, 13 Graphs; Document Type: Article L3 - 10.1121/1.1641790 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20565386&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Luckarift, Heather R. AU - Spain, Jim C. AU - Naik, Rajesh R. AU - Stone, Morley O. T1 - Enzyme immobilization in a biomimetic silica support. JO - Nature Biotechnology JF - Nature Biotechnology Y1 - 2004/02// VL - 22 IS - 2 M3 - Article SP - 211 EP - 213 PB - Nature Publishing Group SN - 10870156 AB - Robust immobilization techniques that preserve the activity of biomolecules have many potential applications. Silicates, primarily in the form of sol-gel composites or functionalized mesoporous silica, have been used to encapsulate a wide variety of biomolecules but the harsh conditions required for chemical synthesis limit their applicability. Silaffin polypeptides from diatoms catalyze the formation of silica in vitro at neutral pH and ambient temperature and pressure. Here we show that butyrylcholinesterase entrapped during the precipitation of silica nanospheres retained all of its activity. Ninety percent of the soluble enzyme was immobilized, and the immobilized enzyme was substantially more stable than the free enzyme. The mechanical properties of silica nanospheres facilitated application in a flow-through reactor. The use of biosilica for enzyme immobilization combines the excellent support properties of a silica matrix with a benign immobilization method that retains enzyme activity. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature Biotechnology is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMMOBILIZED enzymes KW - BIOMIMETICS (Chemistry) KW - SILICATES KW - BIOMOLECULES KW - MICROENCAPSULATION N1 - Accession Number: 12130088; Luckarift, Heather R. 1 Spain, Jim C. 1; Email Address: jim.spain@tyndall.af.mil Naik, Rajesh R. 2 Stone, Morley O. 2; Affiliation: 1: Air Force Research Laboratory, Airbase Technologies Division, 139 Barnes Drive, Suite #2, Tyndall Air Force Base, Florida 32403-5323, USA. 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433-7702, USA.; Source Info: Feb2004, Vol. 22 Issue 2, p211; Subject Term: IMMOBILIZED enzymes; Subject Term: BIOMIMETICS (Chemistry); Subject Term: SILICATES; Subject Term: BIOMOLECULES; Subject Term: MICROENCAPSULATION; Number of Pages: 3p; Illustrations: 1 Black and White Photograph, 2 Graphs; Document Type: Article L3 - 10.1038/nbt931 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12130088&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bugna, G.C. AU - Chanton, J.P. AU - Kelley, C.A. AU - Stauffer, T.B. AU - MacIntyre, W.G. AU - Libelo, E.L. T1 - A field test of δ13C as a tracer of aerobic hydrocarbon degradation JO - Organic Geochemistry JF - Organic Geochemistry Y1 - 2004/02// VL - 35 IS - 2 M3 - Article SP - 123 SN - 01466380 AB - The controlled release of a mixture simulating jet fuel was conducted to determine the effects of transport and degradation on the δ13C of reactants and products in a field setting. Benzene, toluene, naphthalene, xylenes, and decane were mixed with native soil and placed 4 m below ground into a surficial aquifer. The δ13C values of the hydrocarbons prior to and after emplacement were measured and no significant isotopic fractionation was observed following migration and partial degradation. The δ13C values of the compounds within the hydrocarbon mixture prior to addition and following 40 and 164 days in the field ranged from −26.6 to −30.0, −26.3 to −30.4 and −26.5 to −29.4‰, respectively. Also measured were the concentrations and δ13C values of respiration endproducts CO2 and CH4 in groundwater samples prior to and 164, 278, 468, 642 and 831 days after the contamination of the surficial aquifer. Endproduct concentrations were clearly elevated relative to pre-emplacement values indicating microbial respiration of the added hydrocarbon mixture. Isotope mass balance calculations yielded similar δ13C values for the sum of the respiration products and the added hydrocarbon mixture. Our results indicate that the products of hydrocarbon respiration reflect the δ13C of the substrates, and in less controlled contaminated field settings DIC isotopic values may be useful for estimating hydrocarbon degradation when DIC up-gradient of the spill has a δ13C value different from that of the contaminants. [Copyright &y& Elsevier] AB - Copyright of Organic Geochemistry is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JET planes -- Fuel KW - BENZENE KW - TOLUENE KW - POLLUTANTS N1 - Accession Number: 11882080; Bugna, G.C. 1 Chanton, J.P. 1; Email Address: jchanton@mailer.fsu.edu Kelley, C.A. 2 Stauffer, T.B. 3 MacIntyre, W.G. 4 Libelo, E.L. 3; Affiliation: 1: Department of Oceanography, Florida State University, Tallahassee, FL 32306-4320, USA 2: Department of Geological Sciences, University of Missouri, Columbia, MO 65211, USA 3: Air Force Research Laboratory, Airbase Technologies Division, Tyndall Air Force Base, FL 32403-5323, USA 4: Virginia Institute of Marine Sciences, Gloucester Point, VA 23062, USA; Source Info: Feb2004, Vol. 35 Issue 2, p123; Subject Term: JET planes -- Fuel; Subject Term: BENZENE; Subject Term: TOLUENE; Subject Term: POLLUTANTS; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 324110 Petroleum Refineries; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.orggeochem.2003.10.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11882080&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ruden, E. L. T1 - The polarity dependent effect of gyroviscosity on the flow shear stabilized Rayleigh–Taylor instability and an application to the plasma focus. JO - Physics of Plasmas JF - Physics of Plasmas Y1 - 2004/02// VL - 11 IS - 2 M3 - Article SP - 713 EP - 723 PB - American Institute of Physics SN - 1070664X AB - The linear dispersion relation is derived for modes of an isothermal finite Larmor radius incompressible plasma with an equilibrium density and horizontal fluid velocity varying with depth in a uniform gravitational field. The velocity and magnetic field are assumed parallel and transverse to the wave number, respectively. Stability criteria are derived and unstable growth rate diagrams plotted for the combined Rayleigh–Taylor/Kelvin–Helmholtz modes for two and three region piecewise uniform cases representing an accelerated plasma layer with sheared flow. The effect of gyroviscosity on wave numbers larger than a critical value is shown to differ if the direction of the magnetic field is reversed, all else being equal, being either stabilizing or destabilizing depending on direction. This implies an electrode polarity dependence for a magnetically accelerated plasma with sheared flow consistent with the observation that plasma foci generally have superior performance if the center conductor is the anode. Characteristic properties of the shocked plasma layer of a plasma focus during the accretion phase are inferred for use with the model. Given a plasma focus with a central anode, a maximum B[sub 0]t product is derived for high wave number stability for a given current waveform, where B[sub 0] is the driving magnetic field magnitude and t is the current risetime. When combined with a recognized empirical scaling law for neutron yield optimized D[sub 2] plasma foci, a maximum current for high wave number stability is implied independent of t. For a linearly rising current, for example, this is 2 MA. Strategies for mitigating the constraints are discussed, such as applying an exponentially increasing current waveform. This and other parametric relationships of the model may lead to designs with higher performance than would otherwise be possible for plasma foci and other devices such as flow shear stabilized Z-pinches. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of Plasmas is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHEAR (Mechanics) KW - FLUIDS KW - GRAVITATIONAL fields KW - MAGNETIC fields KW - ANODES KW - NEUTRONS N1 - Accession Number: 11999279; Ruden, E. L. 1; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, New Mexico 87117-5776.; Source Info: Feb2004, Vol. 11 Issue 2, p713; Subject Term: SHEAR (Mechanics); Subject Term: FLUIDS; Subject Term: GRAVITATIONAL fields; Subject Term: MAGNETIC fields; Subject Term: ANODES; Subject Term: NEUTRONS; Number of Pages: 11p; Document Type: Article L3 - 10.1063/1.1637608 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11999279&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Basun, S. A. AU - Razdobarin, A. G. AU - Sochava, L. S. AU - Evans, D. R. AU - Skrebtsov, G. T1 - Optical Alignment of Cu[sup 2+] Axial Centers in KTaO[sub 3]: Spectral Dependence of the Effect. JO - Physics of the Solid State JF - Physics of the Solid State Y1 - 2004/02// VL - 46 IS - 2 M3 - Article SP - 258 EP - 264 PB - Springer Science & Business Media B.V. SN - 10637834 AB - The Cu[sup 2+][sub Ta]–V[sub O] axial centers in crystalline KTaO[sub 3] were found to undergo alignment under the action of polarized light. The sign of the effect is shown to change depending on the wavelength of the aligning light. A parallel study of the spectral response of photoconductivity of the same samples led to the conclusion that the alignment of the copper centers is driven not by reorientation but rather by an anisotropic recharging of the centers, which involves both the conduction and valence bands of the crystal. This interpretation was supported by a study of the kinetics of thermal destruction of the copper center alignment. © 2004 MAIK “Nauka / Interperiodica”. [ABSTRACT FROM AUTHOR] AB - Copyright of Physics of the Solid State is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRAL sensitivity KW - PHOTOCONDUCTIVITY KW - ELECTRIC conductivity KW - PHOTOELECTRICITY KW - ANISOTROPY KW - MATTER -- Properties KW - CRYSTALLOGRAPHY KW - PHYSICS N1 - Accession Number: 12230796; Basun, S. A. 1 Razdobarin, A. G. 1 Sochava, L. S. 1; Email Address: Lev.Sochava@pop.ioffe.rssi.ru Evans, D. R. 2 Skrebtsov, G.; Affiliation: 1: Ioffe Physicotechnical Institute, Russian Academy of Sciences, Politeknicheskaya ul. 26, St. Petersburg, Russia 2: Air Force Research Laboratory, Wright­Patterson Air Force Base, Dyton, Ohio, USA; Source Info: Feb2004, Vol. 46 Issue 2, p258; Subject Term: SPECTRAL sensitivity; Subject Term: PHOTOCONDUCTIVITY; Subject Term: ELECTRIC conductivity; Subject Term: PHOTOELECTRICITY; Subject Term: ANISOTROPY; Subject Term: MATTER -- Properties; Subject Term: CRYSTALLOGRAPHY; Subject Term: PHYSICS; Number of Pages: 7p; Document Type: Article L3 - 10.1134/1.1649421 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12230796&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucia, David J. AU - Beran, Philip S. AU - Silva, Walter A. T1 - Reduced-order modeling: new approaches for computational physics JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences Y1 - 2004/02// VL - 40 IS - 1/2 M3 - Article SP - 51 SN - 03760421 AB - In this paper, we review the development of new reduced-order modeling techniques and discuss their applicability to various problems in computational physics. Emphasis is given to methods based on Volterra series representations, the proper orthogonal decomposition, and harmonic balance. Results are reported for different nonlinear systems to provide clear examples of the construction and use of reduced-order models (ROMs), particularly in the multi-disciplinary field of computational aeroelasticity. Unsteady aerodynamic and aeroelastic behaviors of two-dimensional and three-dimensional geometries are described. Large increases in computational efficiency are obtained through the use of ROMs, thereby justifying the initial computational expense of constructing these models and motivating their use for multi-disciplinary design analysis. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS KW - VOLTERRA series KW - NONLINEAR systems KW - AEROELASTICITY KW - Galerkin projection KW - Harmonic balance KW - Proper orthogonal decomposition KW - Reduced-order modeling KW - Volterra series N1 - Accession Number: 12376310; Lucia, David J. 1; Email Address: david.lucia@wpafb.af.mil Beran, Philip S. 2; Email Address: philip.beran@wpafb.af.mil Silva, Walter A. 3; Affiliation: 1: Air Force Research Laboratory, 2130 Eight Street, Suite 1, Building 45, WPAFB, OH 45433-7542, USA 2: AFRL/VASD, Bldg 146, 2210 Eighth Street, WPAFB, OH 45433-7531, USA 3: Aeroelasticity Branch, Mail Stop 340, NASA Langley Research Center, Hampton, VA 23681-0001, USA; Source Info: Feb2004, Vol. 40 Issue 1/2, p51; Subject Term: PHYSICS; Subject Term: VOLTERRA series; Subject Term: NONLINEAR systems; Subject Term: AEROELASTICITY; Author-Supplied Keyword: Galerkin projection; Author-Supplied Keyword: Harmonic balance; Author-Supplied Keyword: Proper orthogonal decomposition; Author-Supplied Keyword: Reduced-order modeling; Author-Supplied Keyword: Volterra series; Number of Pages: 67p; Document Type: Article L3 - 10.1016/j.paerosci.2003.12.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12376310&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Khan, Arif AU - Nelson, Nicole AU - Griffin, James A. AU - Smith, David J. AU - Steiner, Todd AU - Noor Mohammad, S. T1 - Nitrogen activated bowing parameter of GaAs1−xNx (x⩽1%) obtained from photoreflectance spectra JO - Solid-State Electronics JF - Solid-State Electronics Y1 - 2004/02// VL - 48 IS - 2 M3 - Article SP - 291 SN - 00381101 AB - Photoreflectance studies were made for a series of GaAs1−xNx samples with x⩽0.01. The photoreflectance studies reveal that the composition dependent bowing parameter of the band gap obtained from the photoreflectance measurements are consistent with those from other optical measurements and also from the first principle supercell calculation. [Copyright &y& Elsevier] AB - Copyright of Solid-State Electronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL measurements KW - SPECTRUM analysis KW - GALLIUM arsenide N1 - Accession Number: 11250346; Khan, Arif 1 Nelson, Nicole 1 Griffin, James A. 1 Smith, David J. 2 Steiner, Todd 3 Noor Mohammad, S. 4; Email Address: snmohammad2002@yahoo.com; Affiliation: 1: Materials Science Research Center of Excellence, Howard University, 2300 Sixth St. NW, Washington, DC 20059, USA 2: Department of Physics & Astrophysics, Arizona State University, Tempe, AZ 85287, USA 3: Air Force Research Laboratory, Air Force Office of Scientific Research, 801 N. Randolph St., Arlington, VA 22203-1977, USA 4: Department of Electrical Engineering, Howard University, Lewis Downing Hall, Room 1124 2300 Sixth St. NW, Washington, DC 20059, USA; Source Info: Feb2004, Vol. 48 Issue 2, p291; Subject Term: OPTICAL measurements; Subject Term: SPECTRUM analysis; Subject Term: GALLIUM arsenide; Number of Pages: 6p; Document Type: Article L3 - 10.1016/S0038-1101(03)00298-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11250346&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Luo, B. AU - Mehandru, R. AU - Kang, B.S. AU - Kim, J. AU - Ren, F. AU - Gila, B.P. AU - Onstine, A.H. AU - Abernathy, C.R. AU - Pearton, S.J. AU - Gotthold, D. AU - Birkhahn, R. AU - Peres, B. AU - Fitch, R. AU - Gillespie, J.K. AU - Jenkins, T. AU - Sewell, J. AU - Via, D. AU - Crespo, A. T1 - Small signal measurement of Sc2O3 AlGaN/GaN moshemts JO - Solid-State Electronics JF - Solid-State Electronics Y1 - 2004/02// VL - 48 IS - 2 M3 - Article SP - 355 SN - 00381101 AB - The rf performance of 1 × 200 μm2 AlGaN/GaN MOS-HEMTs with Sc2O3 used as both the gate dielectric and as a surface passivation layer is reported. A maximum fT of ∼11 GHz and fMAX of 19 GHz were obtained. The equivalent device parameters were extracted by fitting this data to obtain the transconductance, drain resistance, drain–source resistance, transfer time and gate–drain and gate–source capacitance as a function of gate voltage. The transfer time is in the order 0.5–1 ps and decreases with increasing gate voltage. [Copyright &y& Elsevier] AB - Copyright of Solid-State Electronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - DIELECTRICS KW - GALLIUM alloys N1 - Accession Number: 11250356; Luo, B. 1 Mehandru, R. 1 Kang, B.S. 1 Kim, J. 1 Ren, F. 1; Email Address: ren@che.ufl.edu Gila, B.P. 2 Onstine, A.H. 2 Abernathy, C.R. 2 Pearton, S.J. 2 Gotthold, D. 3 Birkhahn, R. 3 Peres, B. 3 Fitch, R. 4 Gillespie, J.K. 4 Jenkins, T. 4 Sewell, J. 4 Via, D. 4 Crespo, A. 4; Affiliation: 1: Department of Chemical Engineering, University of Florida, P.O. Box 116005, Gainesville, FL 32611, USA 2: Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA 3: EMCORE, Somerset, NJ 08873, USA 4: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson, AFB, OH 45433-7322, USA; Source Info: Feb2004, Vol. 48 Issue 2, p355; Subject Term: GALLIUM nitride; Subject Term: DIELECTRICS; Subject Term: GALLIUM alloys; Number of Pages: 4p; Document Type: Article L3 - 10.1016/S0038-1101(03)00322-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11250356&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Billock, Vincent A. AU - Tsou, Brian H. T1 - What do catastrophic visual binding failures look like? JO - Trends in Neurosciences JF - Trends in Neurosciences Y1 - 2004/02// VL - 27 IS - 2 M3 - Article SP - 84 SN - 01662236 AB - Ordinary vision is considered a binding success: all the pieces and aspects of an image are bound together, despite being processed by many different neurons in several different cortical areas. How this is accomplished is a key problem in visual neuroscience. The study of visual binding might be facilitated if we had ways to induce binding failures. A particularly interesting failure would involve a loss of the physical integrity of the image. Here, we identify conditions that induce such perceptual failures (e.g. the melting together of equiluminant colored images and the fragmentation of retinally stabilized images) and we suggest that these should studied using electrophysiological measures of binding. [Copyright &y& Elsevier] AB - Copyright of Trends in Neurosciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEURONS KW - NEUROSCIENCES KW - VISION KW - NERVOUS system KW - ELECTROPHYSIOLOGY N1 - Accession Number: 12097387; Billock, Vincent A. 1; Email Address: vince.billock@wpafb.af.mil Tsou, Brian H. 2; Affiliation: 1: General Dynamics, Suite 200, 5200 Springfield Pike, Dayton, OH 45431, USA 2: US Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Feb2004, Vol. 27 Issue 2, p84; Subject Term: NEURONS; Subject Term: NEUROSCIENCES; Subject Term: VISION; Subject Term: NERVOUS system; Subject Term: ELECTROPHYSIOLOGY; Number of Pages: 6p; Document Type: Article L3 - 10.1016/j.tins.2003.12.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12097387&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dixon, David A. AU - Feller, David AU - Christe, Karl O. AU - Wilson, William W. AU - Vij, Ashwani AU - Vij, Vandana AU - Jenkins, H. Donald Brooke AU - Olson, Ryan M. AU - Gordon, Mark S. T1 - Enthalpies of Formation of Gas-Phase N3, N3-,, N[sup+, sub5], and N[sup-, sub5] from Ab Initio Molecular Orbital Theory, Stability Predictions for N[sup+, sub5]N[sup-, sub3]... JO - Journal of the American Chemical Society JF - Journal of the American Chemical Society Y1 - 2004/01/28/ VL - 126 IS - 3 M3 - Article SP - 834 EP - 843 SN - 00027863 AB - Ab initio molecular orbital theory has been used to calculate accurate enthalpies of formation and adiabatic electron affinities or ionization potentials for N[sub3], N[sub3]-, N[sub5]+, and N[sub5]- from total atomization energies. The calculated heats of formation of the gas-phase molecules/ions at 0 K are δ-H[subf](N[sub3]([sup2]&pie;)) = 109.2, δ-H[subf](N[sub3]-([sub1]&radic[sup+])) = 47.4, DeltaH[subf](N[sub5]-([sup1]A[sub1])) = 62.3, and δ-H[subf](N[sub5]+([sup1]A[sub1])) = 353.3 kcal/mol with an estimated error bar of ±1 kcal/mol. For comparison purposes, the error in the calculated bond energy for N[sub2] is 0.72 kcal/mol. Born-Haber cycle calculations, using estimated lattice energies and the adiabatic ionization potentials of the anions and electron affinities of the cations, enable reliable stability predictions for the hypothetical N[sub5]+N[sub3]- and N[sub5]-N salts. The calculations show that neither salt can be stabilized and that both should decompose spontaneously into N[sub3] radicals and N[sub2]. This conclusion was experimentally confirmed for the NCN3 salt by low-temperature metathetical reactions between N[sub5]SbF[sub6] and alkali metal azides in different solvents, resulting in violent reactions with spontaneous nitrogen evolution. It is emphasized that one needs to use adiabatic ionization potentials and electron affinities instead of vertical potentials and affinities for salt stability predictions when the formed radicals are not vibrationally stable. This is the case for the N[sub5] radicals where the energy difference between vertical and adiabatic potentials amounts to about 100 kcal/mol per N[sub5]. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NITROGEN KW - ALKALI metals KW - POLYAMINES KW - RADICALS (Chemistry) KW - ENTHALPY KW - DECOMPOSITION (Chemistry) N1 - Accession Number: 12330425; Dixon, David A. 1 Feller, David 1 Christe, Karl O. 2,3 Wilson, William W. 2 Vij, Ashwani 2 Vij, Vandana 2 Jenkins, H. Donald Brooke 4 Olson, Ryan M. 5 Gordon, Mark S. 5; Affiliation: 1: Chemical Sciences Division and Fundamental Sciences Directorate, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352. 2: Air Force Research Laboratory, Edwards Air Force Base, California 93524. 3: Loker Hydro-carbon Research Institute, University of Southern California, Los Angeles, California 90089. 4: Department of Chemistry, University of Warwick, Coventry CV4 7AL, West Midlands, U.K. 5: Department of Chemistry, Spedding Hall, Iowa State University, Ames, Iowa 50011.; Source Info: 1/28/2004, Vol. 126 Issue 3, p834; Subject Term: NITROGEN; Subject Term: ALKALI metals; Subject Term: POLYAMINES; Subject Term: RADICALS (Chemistry); Subject Term: ENTHALPY; Subject Term: DECOMPOSITION (Chemistry); NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12330425&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Khramov, A.N. AU - Voevodin, N.N. AU - Balbyshev, V.N. AU - Donley, M.S. T1 - Hybrid organo-ceramic corrosion protection coatings with encapsulated organic corrosion inhibitors JO - Thin Solid Films JF - Thin Solid Films Y1 - 2004/01/22/ VL - 447/448 M3 - Article SP - 549 SN - 00406090 AB - To improve corrosion protection properties of sol–gel derived hybrid coatings; two organic corrosion inhibitors (mercaptobenzothiazole and mercaptobenzimidazole) have been encapsulated within the coating matrix in either the presence or absence of β-cyclodextrin. Corrosion protection performance of the developed coatings on AA 2024-T3 has been examined by potentiodynamic scan method and scanning vibrating electrode technique. Superior corrosion protection properties have been found for formulations that contain β-cyclodextrin and can be explained by the act of slow release of the inhibitor from the cyclodextrin/inhibitor inclusion complexes and by the self-healing of corrosion defects. The effectiveness of the approach for long-term protection of the high strength aluminum alloys against atmospheric corrosion is discussed. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACES (Technology) KW - COLLOIDS KW - LIGHT metals KW - ALUMINUM silicates KW - Coating KW - Corrosion KW - Cyclodextrin KW - Inhibitor KW - Sol–gel N1 - Accession Number: 12442677; Khramov, A.N. 1; Email Address: alex.khramov@fnnet.wpafbml.org Voevodin, N.N. 2 Balbyshev, V.N. 1 Donley, M.S. 3; Affiliation: 1: Universal Technology Corporation, 1270 N. Fairfield Road, Dayton, OH 45432-2600, USA 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45432-2600, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Nonmetallic Materials Division, Nonstructural Materials Branch, Coatings Research Group, Wright-Patterson AFB, Dayton, OH 45433-7750, USA; Source Info: Jan2004, Vol. 447/448, p549; Subject Term: SURFACES (Technology); Subject Term: COLLOIDS; Subject Term: LIGHT metals; Subject Term: ALUMINUM silicates; Author-Supplied Keyword: Coating; Author-Supplied Keyword: Corrosion; Author-Supplied Keyword: Cyclodextrin; Author-Supplied Keyword: Inhibitor; Author-Supplied Keyword: Sol–gel; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.tsf.2003.07.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12442677&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Woodward, C. AU - Rao, S. I. T1 - Ab-initio simulation of ( a /2)<110] screw dislocations in γ-TiAl. JO - Philosophical Magazine JF - Philosophical Magazine Y1 - 2004/01/21/ VL - 84 IS - 3-5 M3 - Article SP - 401 EP - 413 SN - 14786435 AB - The equilibrium core structure of an isolated ( a /2)<110]{111} screw dislocation is calculated using a first-principles pseudopotential plane-wave method within the local-density approximation of the density functional theory. In this work the local dislocation strain field is self-consistently coupled to the long-range elastic field using a flexible-boundary condition method. This ab - initio adaptation of the Green's function boundary condition method makes it possible to simulate the dislocation in a very small periodic cell without compromising the fidelity of the final core configuration. Supercells of 210, 288 and 420 atoms are used to evaluate the local screw and edge displacements of a straight ( a /2)<110]{111} screw dislocation in γ-TiAl. The predicted dislocation core is nonplanar with significant portions of the dislocation core spread on conjugate {111} glide planes. The nonplanar character of the dislocation core suggests that the dislocation is sessile and would readily glide on either of two {111} slip planes. The dislocation core also produces small but significant edge components that are expected to interact strongly with non-glide (e.g. Escaig) stresses, producing significant non-Schmid behaviour. Preliminary estimates of the lattice frictional stress for a pure (111) shear stress are in the range of 0.01 µ, where µ is the shear modulus. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Magazine is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DISLOCATIONS in metals KW - PSEUDOPOTENTIAL method KW - GREEN'S functions KW - LATTICE dynamics KW - SHEAR (Mechanics) KW - MATTER -- Properties KW - SIMULATION methods & models N1 - Accession Number: 12021616; Woodward, C. 1,2,3; Email Address: christopher.woodward@wpafb.af.mil Rao, S. I. 2; Affiliation: 1: US Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433-7817, USA. 2: Materials and Processing Division, UES, Inc., Dayton, Ohio 45432, USA. 3: Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208-3108, USA.; Source Info: 1/21/2004, Vol. 84 Issue 3-5, p401; Subject Term: DISLOCATIONS in metals; Subject Term: PSEUDOPOTENTIAL method; Subject Term: GREEN'S functions; Subject Term: LATTICE dynamics; Subject Term: SHEAR (Mechanics); Subject Term: MATTER -- Properties; Subject Term: SIMULATION methods & models; Number of Pages: 13p; Document Type: Article L3 - 10.1080/14786430310001611626 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12021616&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tewari, A. AU - Gokhale, A.M. AU - Spowart, J.E. AU - Miracle, D.B. T1 - Quantitative characterization of spatial clustering in three-dimensional microstructures using two-point correlation functions JO - Acta Materialia JF - Acta Materialia Y1 - 2004/01/19/ VL - 52 IS - 2 M3 - Article SP - 307 SN - 13596454 AB - Two-point, three-point, and higher order microstructural correlation functions are important class of statistical descriptors that are useful for characterization of spatial arrangement and heterogeneity of microstructural features. In this contribution, an unbiased, efficient, and robust practical technique is presented for estimation of direction dependent as well as orientation averaged two-point correlation functions in three-dimensional (3D) microstructures from the measurement performed on vertical metallographic planes. It is shown that if the direction dependence of the two-point correlations has an axis of symmetry then measurements on just one vertical plane containing the symmetry axis are sufficient for estimation of the direction dependent as well as mean two-point correlation functions, and measurements on at the most three vertical planes are sufficient if there is no symmetry axis. The new method is applied for characterization of spatial heterogeneity and clustering of SiC particles in a series of DRA composites having different degrees of microstructural heterogeneity and clustering. It is shown that numerous length scale parameters that characterize spatial heterogeneity and clustering can be extracted from the experimental data on two-point correlation functions. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - SPATIAL analysis (Statistics) KW - METALLOGRAPHY KW - CLUSTER theory (Nuclear physics) KW - CLUSTERING of particles KW - Clustering KW - Discontinuously reinforced aluminum composites KW - Image analysis KW - Stereology KW - Two-point correlation function N1 - Accession Number: 11881672; Tewari, A. 1 Gokhale, A.M. 1; Email Address: arun.gokhale@mse.gatech.edu Spowart, J.E. 2 Miracle, D.B. 3; Affiliation: 1: School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, GA 30332-0245, USA 2: UES, Inc., Dayton, OH 45432, USA 3: Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA; Source Info: Jan2004, Vol. 52 Issue 2, p307; Subject Term: MICROSTRUCTURE; Subject Term: SPATIAL analysis (Statistics); Subject Term: METALLOGRAPHY; Subject Term: CLUSTER theory (Nuclear physics); Subject Term: CLUSTERING of particles; Author-Supplied Keyword: Clustering; Author-Supplied Keyword: Discontinuously reinforced aluminum composites; Author-Supplied Keyword: Image analysis; Author-Supplied Keyword: Stereology; Author-Supplied Keyword: Two-point correlation function; Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.actamat.2003.09.016 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11881672&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Paduano, Q.S. AU - Weyburne, D.W. AU - Jasinski, J. AU - Liliental-Weber, Z. T1 - Effect of initial process conditions on the structural properties of AlN films JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2004/01/19/ VL - 261 IS - 2/3 M3 - Article SP - 259 SN - 00220248 AB - A two-step pressure process was recently developed for depositing AlN layers on sapphire substrates by MOCVD. Together with optimum substrate nitridation, the process resulted in AlN layers that had FWHM values of ∼350 and ∼550 arcsec for the (0 0 0 2) and (1 0 1¯ 2) rocking curves, respectively. While the films show excellent X-ray FWHM values, they often have poor morphology as well as small inversion domains spread throughout the film surface. A systematic study was initiated to understand the effect of substrate nitridation and the initial process conditions on the surface morphology and the structural properties. Using atomic force microscopy, transmission electron microscopy, and X-ray diffraction, it was found that the nitridation conditions as well as the initial deposition conditions result in a mixed polarity surface coverage of the substrate. It is possible to force the growth of predominately Al- or N-polarity AlN layers by choosing different initial growth conditions. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SAPPHIRES KW - NITRIDES KW - TRANSMISSION electron microscopy KW - SURFACE hardening KW - 81.15.Gh KW - A1. Atomic force microscopy KW - A1. Crystal morphology KW - A1. High-resolution X-ray diffraction KW - B1. Nitrides N1 - Accession Number: 11889450; Paduano, Q.S. 1; Email Address: qing.sun-puduano@hanscom.af.mil Weyburne, D.W. 1 Jasinski, J. 2 Liliental-Weber, Z. 2; Affiliation: 1: Air Force Research Laboratory, 80 Scott Dr. Hanscom AFB, MA 01731, USA 2: Lawrence Berkeley National Laboratory, One Cyclotron Rd., Berkeley, CA 94720, USA; Source Info: Jan2004, Vol. 261 Issue 2/3, p259; Subject Term: SAPPHIRES; Subject Term: NITRIDES; Subject Term: TRANSMISSION electron microscopy; Subject Term: SURFACE hardening; Author-Supplied Keyword: 81.15.Gh; Author-Supplied Keyword: A1. Atomic force microscopy; Author-Supplied Keyword: A1. Crystal morphology; Author-Supplied Keyword: A1. High-resolution X-ray diffraction; Author-Supplied Keyword: B1. Nitrides; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.jcrysgro.2003.11.017 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11889450&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mustafa, Shamimunisa B. AU - DiGeronimo, Robert J. AU - Petershack, Jean A. AU - Alcorn, Joseph L. AU - Seidner, Steven R. T1 - Postnatal glucocorticoids induce α-ENaC formation and regulate glucocorticoid receptors in the preterm rabbit lung. JO - American Journal of Physiology: Lung Cellular & Molecular Physiology JF - American Journal of Physiology: Lung Cellular & Molecular Physiology Y1 - 2004/01// VL - 30 IS - 1 M3 - Article SP - L73 EP - L80 SN - 10400605 AB - Presents a study that evaluated the effect of postnatal glucocorticoids (GC) on lung α-epithelial NA+ (ENaC) mRNA expression in preterm 29-day gestational age fetal rabbits. Postnatal treatment of GA fetuses with 0.5 milligram per kilogram of dexamethasone; Two- and 22-fold increase in lung α-ENaC mRNA expression compared with saline-treated counterparts; Glucocorticoid receptor antagonist RU-486 in fetal distal lung epithelial cells. KW - GLUCOCORTICOIDS KW - LUNGS KW - EPITHELIAL cells KW - SODIUM channels KW - GENE expression KW - RABBITS as laboratory animals KW - CELL receptors N1 - Accession Number: 12314208; Mustafa, Shamimunisa B. 1; Email Address: mustafa@uthscsa.edu DiGeronimo, Robert J. 2 Petershack, Jean A. 1 Alcorn, Joseph L. 3 Seidner, Steven R. 1; Affiliation: 1: Department of Pediatrics/Division of Neonatology, University of Texas Health Science Center, San Antonio 2: Wilford Hall United States Air Force Medical Center, San Antonio 3: Department of Pediatrics, University of Texas-Houston Medical School, Houston, Texas; Source Info: Jan2004, Vol. 30 Issue 1, pL73; Subject Term: GLUCOCORTICOIDS; Subject Term: LUNGS; Subject Term: EPITHELIAL cells; Subject Term: SODIUM channels; Subject Term: GENE expression; Subject Term: RABBITS as laboratory animals; Subject Term: CELL receptors; Number of Pages: 8p; Illustrations: 11 Black and White Photographs, 7 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12314208&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Unangst Jr., Edward T. AU - Wunder, Bruce A. T1 - Effect of Supplemental High-fat Forage on Body Composition in Wild Meadow Voles (Microtus pennsylvanicus). JO - American Midland Naturalist JF - American Midland Naturalist Y1 - 2004/01// VL - 151 IS - 1 M3 - Article SP - 146 EP - 153 PB - University of Notre Dame / American Midland Naturalist SN - 00030031 AB - We evaluated the effect of dietary fat on body fat of meadow voles (Microtus pennsylvanicus) in the field after a 6-wk supplemental feeding period with a 25% dietary-fat food. The initial 3-wk period showed no difference in body composition, but, after 6-wk, 33% of captures showed body fat exceeding 10%, levels atypical of wild populations. Fattening levels found with supplemental food were similar to body fat levels seen in lab-reared or wild animals removed and kept under lab conditions. Our results suggest that the lean body composition found in wild populations is influenced strongly by high-fiber and low dietary-fat forage, along with other environmental constraints. When provided easily available and abundant high dietary-fat food in the wild, a higher percentage of individuals increased body fat to levels rarely seen under natural conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of American Midland Naturalist is the property of University of Notre Dame / American Midland Naturalist and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FAT KW - BODY composition KW - FEEDS KW - MICROTUS KW - FIBERS N1 - Accession Number: 12087906; Unangst Jr., Edward T. 1; Email Address: tom.unangst@usafa.af.mil Wunder, Bruce A. 2; Affiliation: 1: Department of Biology, US Air Force Academy, Colorado Springs 80840 2: Department of Biology, Colorado State University, Fort Collins 80538; Source Info: Jan2004, Vol. 151 Issue 1, p146; Subject Term: FAT; Subject Term: BODY composition; Subject Term: FEEDS; Subject Term: MICROTUS; Subject Term: FIBERS; NAICS/Industry Codes: 424910 Farm Supplies Merchant Wholesalers; NAICS/Industry Codes: 418310 Agricultural feed merchant wholesalers; NAICS/Industry Codes: 311515 Butter, cheese, and dry and condensed dairy product manufacturing; NAICS/Industry Codes: 444220 Nursery, Garden Center, and Farm Supply Stores; Number of Pages: 8p; Illustrations: 1 Chart; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12087906&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jauchem, J. R. AU - Ryan, K. L. AU - Tehrany, M. R. T1 - Effects of histamine receptor blockade on cardiovascular changes induced by 35 GHz radio frequency radiation heating. JO - Autonomic & Autacoid Pharmacology JF - Autonomic & Autacoid Pharmacology Y1 - 2004/01// VL - 24 IS - 1 M3 - Article SP - 17 EP - 28 PB - Wiley-Blackwell SN - 14748665 AB - 1 The role of histamine in heat-induced cardiovascular changes is uncertain. The purpose of this study was to examine effects of histamine H-1- and H-2-antagonism on heart rate, mean arterial blood pressure (MAP), localized body temperature changes, survival times, and lethal body temperatures that occur during the exposure of anaesthetized rats to 35 GHz radio frequency radiation (RFR). 2 Forty-eight ketamine-anaesthetized Sprague–Dawley rats were exposed, in several different treatment groups ( n = 8 in each), to 35 GHz RFR at a level that resulted in significant body heating and subsequent death. During irradiation, a continuous increase in heart rate and a biphasic response in blood pressure (initial increase followed by a decrease) were observed in all groups of animals. 3 An H-1-antagonist, diphenhydramine (1 mg kg−1 body wt) and an H-2-antagonist, cimetidine (5 mg kg−1), administered after sustained RFR exposure, failed to reverse the RFR-induced hypotension. High doses of the drugs (5 and 10 mg kg−1, respectively) also did not alter the response. Post-RFR survival time was significantly decreased in the high-dose drug-treated group, compared with vehicle-treated (0.9% NaCl, 50% ethanol and 50% D5W) controls. 4 In experiments in which the two drugs were administered prior to RFR exposure, MAP in animals receiving high-dose antihistamines was significantly depressed compared with that of vehicle-treated animals during the first 35 min of RFR exposure. Antihistamine pretreatment, however, did not alter the total RFR exposure time required for death to occur. 5 In summary, pharmacological blockade of H-1 and H-2 receptors is not beneficial in anaesthetized rats made hypotensive by RFR exposure. This indicates that activation of H-1 and H-2 receptors by histamine does not occur to any significant extent and does not mediate the hypotensive response developed in this model of hyperthermia. [ABSTRACT FROM AUTHOR] AB - Copyright of Autonomic & Autacoid Pharmacology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HISTAMINE KW - HEART beat KW - BLOOD pressure KW - MEDICAL thermography KW - BODY temperature KW - ANESTHESIA adjuvants KW - blood pressure KW - H1 receptors KW - H2 receptors KW - heart rate KW - histamine KW - radio frequency radiation N1 - Accession Number: 14118201; Jauchem, J. R. 1 Ryan, K. L. 2 Tehrany, M. R. 2; Affiliation: 1: 1 Air Force Research Laboratory, Directed Energy Bio-Effects Division, Radio Frequency Radiation Branch, Brooks City-Base, TX 78235-5147 2: 2 Department of Biology, Trinity University, San Antonio, TX 78212, USA; Source Info: Jan2004, Vol. 24 Issue 1, p17; Subject Term: HISTAMINE; Subject Term: HEART beat; Subject Term: BLOOD pressure; Subject Term: MEDICAL thermography; Subject Term: BODY temperature; Subject Term: ANESTHESIA adjuvants; Author-Supplied Keyword: blood pressure; Author-Supplied Keyword: H1 receptors; Author-Supplied Keyword: H2 receptors; Author-Supplied Keyword: heart rate; Author-Supplied Keyword: histamine; Author-Supplied Keyword: radio frequency radiation; Number of Pages: 12p; Document Type: Article L3 - 10.1111/j.1474-8673.2004.00309.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14118201&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jay Vaidya AU - Earl Gregory T1 - GENERATORS AND CONTROLLERS FOR MICRO POWER BASED DISTRIBUTED POWER SYSTEMS. JO - Cogeneration & Distributed Generation Journal JF - Cogeneration & Distributed Generation Journal Y1 - 2004///Winter2004 VL - 19 IS - 1 M3 - Article SP - 69 EP - 79 SN - 15453669 AB - Micro turbine based generator systems are becoming popular for providing electric power and heat in a cogeneration environment. The reason for this is the fact that the high-speed turbo-generator sets are very compact in size and are competitive in the cogeneration environment. The electric generator is directly coupled to the high-speed turbine and must be capable of operating at the high speed. The typical micro and mini turbine speeds are in the range of 30,000 rpm to 120,000 rpm. The higher the power, lower is the speed. Thus a 40-kW micro turbine-generator may operate at 120,000 rpm, while a 500-kW mini-turbine may operate at 30,000 rpm. This article addresses a 200 kW, 60,000 rpm generator and controller suitable for direct coupling to a turbine. Many of the micropower units available in the market use permanent magnet generators. In the design presented here, induction generator technology is applied. It is believed that induction generators offer benefits such as lower cost, higher cycle efficiency, and safety of operation. [ABSTRACT FROM AUTHOR] AB - Copyright of Cogeneration & Distributed Generation Journal is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC power KW - ELECTRIC generators KW - COST effectiveness KW - ELECTRIC utilities N1 - Accession Number: 22606403; Jay Vaidya 1 Earl Gregory 2; Affiliation: 1: Electrodynamics Associates, Inc. 2: Air Force Research Laboratory; Source Info: Winter2004, Vol. 19 Issue 1, p69; Subject Term: ELECTRIC power; Subject Term: ELECTRIC generators; Subject Term: COST effectiveness; Subject Term: ELECTRIC utilities; NAICS/Industry Codes: 335312 Motor and Generator Manufacturing; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 221122 Electric Power Distribution; NAICS/Industry Codes: 221121 Electric Bulk Power Transmission and Control; NAICS/Industry Codes: 221118 Other Electric Power Generation; NAICS/Industry Codes: 221117 Biomass Electric Power Generation; NAICS/Industry Codes: 221116 Geothermal Electric Power Generation; NAICS/Industry Codes: 221115 Wind Electric Power Generation; NAICS/Industry Codes: 221114 Solar Electric Power Generation; NAICS/Industry Codes: 221113 Nuclear Electric Power Generation; NAICS/Industry Codes: 221111 Hydroelectric Power Generation; NAICS/Industry Codes: 221112 Fossil Fuel Electric Power Generation; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22606403&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hosur, M.V. AU - Alexander, J. AU - Vaidya, U.K. AU - Jeelani, S. AU - Mayer, A. T1 - Studies on the off-axis high strain rate compression loading of satin weave carbon/epoxy composites JO - Composite Structures JF - Composite Structures Y1 - 2004/01// VL - 63 IS - 1 M3 - Article SP - 75 SN - 02638223 AB - This paper discusses the experimental study on the response of affordable satin weave carbon/epoxy composite laminates subjected to high strain rate compression loading using a modified compression split Hopkinson’s pressure bar (SHPB) under off-axis loading. Thirty seven layer laminates were manufactured using aerospace grade woven fabrics with SC-15 epoxy resin system utilizing vacuum assisted resin infusion molding approach. Samples were subjected to high strain rate compression loading at strain rates ranging from 1092/s to 2425/s using a modified SHPB that facilitates controlled single pulse loading of the sample. Samples were tested in the inplane direction along warp (0°) and weft/fill (90°) and 15°, 30°, 45°, 60° and 75° off-axes angles. Quasi-static tests were carried out to compare with the dynamic response. Failure modes were evaluated using optical micrographs. Results of the study were analyzed in terms of peak stress, strain at peak stress, failure modes and orientation. [Copyright &y& Elsevier] AB - Copyright of Composite Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPOXY compounds KW - LAMINATED materials KW - STRAINS & stresses (Mechanics) KW - MICROGRAPHICS KW - High strain rate KW - Modified split Hopkinson’s pressure bar KW - Resin infusion molding KW - Woven carbon/epoxy composites N1 - Accession Number: 11251174; Hosur, M.V. 1; Email Address: hosur@tuskegee.edu Alexander, J. 1 Vaidya, U.K. 2 Jeelani, S. 1 Mayer, A. 3; Affiliation: 1: Center for Advanced Materials, Tuskegee University, Tuskegee, AL 36088, USA 2: Department of Materials and Mechanical Engineering, The University of Alabama at Birmingham, Birmingham, AL 35294, USA 3: Air Force Research laboratory, VASD, WPAFB, OH 45433, USA; Source Info: Jan2004, Vol. 63 Issue 1, p75; Subject Term: EPOXY compounds; Subject Term: LAMINATED materials; Subject Term: STRAINS & stresses (Mechanics); Subject Term: MICROGRAPHICS; Author-Supplied Keyword: High strain rate; Author-Supplied Keyword: Modified split Hopkinson’s pressure bar; Author-Supplied Keyword: Resin infusion molding; Author-Supplied Keyword: Woven carbon/epoxy composites; Number of Pages: 11p; Document Type: Article L3 - 10.1016/S0263-8223(03)00134-X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11251174&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Phillips, Shawn H. AU - Haddad, Timothy S. AU - Tomczak, Sandra J. T1 - Developments in nanoscience: polyhedral oligomeric silsesquioxane (POSS)-polymers JO - Current Opinion in Solid State & Materials Science JF - Current Opinion in Solid State & Materials Science Y1 - 2004/01// VL - 8 IS - 1 M3 - Article SP - 21 EP - 29 SN - 13590286 AB - This review is intended to cover the more recent advances in both structure–property relationships of polymers incorporating polyhedral oligomeric silsesquioxane(s) (POSS) nanostructured chemicals as well as space-survivability testing of POSS-polymers. The strategy employed for using POSS as building-blocks is discussed in addition to current models and predictions pertaining to the ideal crystallite/aggregate size of the nanocomposite within the polymer matrix to provide maximum mechanical improvements. The oxidation and rapid formation of SiO2 during atomic oxygen testing leads to a passivating layer, and conclusive proof of these phenomena is presented. Also, a brief history of POSS is outlined to help readers understand how they relate to the recent boom in nanotechnology and their position in nanomaterials R&D. [Copyright &y& Elsevier] AB - Copyright of Current Opinion in Solid State & Materials Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - OLIGOMERS KW - NANOSCIENCE KW - MATRICES N1 - Accession Number: 13565033; Phillips, Shawn H. 1; Email Address: shawn.phillips@edwards.af.mil Haddad, Timothy S. 2; Email Address: timothy.haddad@edwards.af.mil Tomczak, Sandra J. 1; Email Address: sandra.tomczak@edwards.af.mil; Affiliation: 1: Air Force Research Laboratory, Edwards AFB, CA 93524-7680, USA 2: ERC Inc., Edwards AFB, CA 93524-7680, USA; Source Info: Jan2004, Vol. 8 Issue 1, p21; Subject Term: POLYMERS; Subject Term: OLIGOMERS; Subject Term: NANOSCIENCE; Subject Term: MATRICES; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.cossms.2004.03.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13565033&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - O'Loughlin, Edward J. AU - Burris, David R. T1 - REDUCTION OF HALOGENATED ETHANES BY GREEN RUST. JO - Environmental Toxicology & Chemistry JF - Environmental Toxicology & Chemistry Y1 - 2004/01// VL - 23 IS - 1 M3 - Article SP - 41 EP - 48 SN - 07307268 AB - Green rusts, mixed FeII/FeIII hydroxide minerals present in many suboxic environments, have been shown to reduce a number of organic and inorganic contaminants. The reduction of halogenated ethanes was examined in aqueous suspensions of green rust, both alone and with the addition of AgI (AgGR) and CuII (CuGR). Hexachloroethane (HCA), pentachloroethane (PCA), 1,1,1,2-tetrachloroethane (1,1,1,2-TeCA), 1,1,2,2-tetrachloroethane (1,1,2,2-TeCA), 1,1,1-trichloroethane (1,1,1-TCA), 1,1,2-trichloroethane (1,1,2-TCA), 1,1-dichloroethane (1,1-DCA), and 1,2-dibromoethane were reduced in the presence of green rust alone, AgGR, or CuGR; only 1,2-dichloroethane and chloroethane were nonreactive. The reduction was generally more rapid for more highly substituted ethanes than for ethanes having fewer halogen groups (HCA > PCA > 1,1,1,2-TeCA . 1,1,1-TCA > 1,1,2,2- TeCA > 1,1,2-TCA > 1,1-DCA), and isomers with the more asymmetric distributions of halogen groups were more rapidly reduced than the isomer with greater symmetry (e.g., 1,1,1-TCA > 1,1,2-TCA). The addition of AgI or CuII to green rust suspensions resulted in a substantial increase in the rate of halogenated ethane reduction as well as significant differences in the product distributions with respect to green rust alone. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Toxicology & Chemistry is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ETHANES KW - HALOGENATION KW - ETHYLENE dibromide KW - HYDROXIDE minerals KW - HYDROCARBONS KW - Chlorinated ethanes KW - Chlorinated hydrocarbons KW - Ethylene dibromide KW - Fe(II)-Fe(III) hydroxide KW - Reductive dehalogenation N1 - Accession Number: 15999625; O'Loughlin, Edward J. 1,2; Email Address: oloughlin@anl.gov Burris, David R. 1,3; Affiliation: 1: Air Force Research Laboratory, AFRL/MLQR, Tyndall AFB, Florida 32403-5301, USA 2: Environmental Research Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA 3: Integrated Science and Technology, 433 Harrison Avenue, Panama City, Florida 32401, USA; Source Info: Jan2004, Vol. 23 Issue 1, p41; Subject Term: ETHANES; Subject Term: HALOGENATION; Subject Term: ETHYLENE dibromide; Subject Term: HYDROXIDE minerals; Subject Term: HYDROCARBONS; Author-Supplied Keyword: Chlorinated ethanes; Author-Supplied Keyword: Chlorinated hydrocarbons; Author-Supplied Keyword: Ethylene dibromide; Author-Supplied Keyword: Fe(II)-Fe(III) hydroxide; Author-Supplied Keyword: Reductive dehalogenation; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 211113 Conventional oil and gas extraction; NAICS/Industry Codes: 211112 Natural Gas Liquid Extraction; Number of Pages: 8p; Illustrations: 1 Diagram, 1 Chart, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15999625&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sanford, G. E. AU - Welsh, J. S. T1 - EELV SECONDARY PAYLOAD ADAPTER (ESPA) STATIC QUALIFICATION TESTS. JO - Experimental Techniques JF - Experimental Techniques Y1 - 2004/01//Jan/Feb2004 VL - 28 IS - 1 M3 - Article SP - 34 EP - 36 SN - 07328818 AB - Focuses on the evolved expendable launch vehicle secondary payload adapter (ESPA) static qualification tests. Constraints in the design of ESPA; Pre-qualification test design and analysis; Requirement for the completion of the ESPA qualification tests. KW - MECHANICS (Physics) KW - STRUCTURAL engineering KW - ENGINEERING KW - LAUNCH vehicles (Astronautics) N1 - Accession Number: 12671010; Sanford, G. E. 1,2 Welsh, J. S. 2,3; Affiliation: 1: CSA Engineering, Inc., Albuquerque, NM. J.S. Welsh 2: Member, SEM 3: Air Force Research Laboratory/VSSV, Kirtland AFB, NM; Source Info: Jan/Feb2004, Vol. 28 Issue 1, p34; Subject Term: MECHANICS (Physics); Subject Term: STRUCTURAL engineering; Subject Term: ENGINEERING; Subject Term: LAUNCH vehicles (Astronautics); Number of Pages: 3p; Illustrations: 3 Diagrams, 1 Chart; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12671010&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heidler, Jeanne T. T1 - Brigadier General John D. Imboden: Confederate Commander in the Shenandoah (Book). JO - H-Net Reviews in the Humanities & Social Sciences JF - H-Net Reviews in the Humanities & Social Sciences Y1 - 2004/01// M3 - Book Review SP - 1 EP - 4 SN - 15380661 AB - Reviews the book "Brigadier General John D. Imboden: Confederate Commander in the Shenandoah," by Spencer C. Tucker. KW - MILITARY biography KW - NONFICTION KW - TUCKER, Spencer C. KW - BRIGADIER General John D. Imboden: Confederate Commander in the Shenandoah (Book) N1 - Accession Number: 15084145; Heidler, Jeanne T. 1; Affiliation: 1: Department of History, United States Air Force Academy; Source Info: Jan2004, p1; Subject Term: MILITARY biography; Subject Term: NONFICTION; Reviews & Products: BRIGADIER General John D. Imboden: Confederate Commander in the Shenandoah (Book); People: TUCKER, Spencer C.; Number of Pages: 4p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15084145&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Amin, Moeness G. AU - Liang Zhao AU - Lindsey, Alan R. T1 - Subspace Array Processing for the Suppression of FM Jamming in GPS Receivers. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2004/01// VL - 40 IS - 1 M3 - Article SP - 80 EP - 92 SN - 00189251 AB - The mitigation of FM interference in GPS receivers is considered. In difference to commonly assumed wideband and narrowband interferers, the FM interferers are wideband, but instantaneously narrowband, and as such, have clear time-frequency (TF) signatures that are distinct from the GPS coarse acquisition (C/A) spread spectrum code. In the proposed technique, the estimate of the FM interference instantaneous frequency (IF) and the interference spatial signature are used to construct the spatio-temporal interference subspace. The if estimates can be provided using existing effective linear or bilinear TF methods. The undesired signal arrival is suppressed by projecting the input data on the interference orthogonal subspace. With a multisensor receiver, the distinctions in both the spatial and TF signatures of signal arrivals allow effective interference suppressions. The deterministic nature of the signal model is considered and the known underlying structure of the GPS C/A code is utalized. We derive the receiver signal-to-interference-plus-noise ratio (SINR) under exact and perturbed IF values. The effect of IF estimation errors on both pseudo-range measurements and navigation data recovery is analyzed. Simulation results comparing the receiver performances under if errors In single and multiantenna GPS receivers are provided. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GLOBAL Positioning System KW - ARTIFICIAL satellites KW - ERRORS KW - SIGNAL processing KW - SENSOR networks KW - ELECTRIC interference N1 - Accession Number: 13262819; Amin, Moeness G. 1; Email Address: moeness@ece.vill.edu Liang Zhao 2 Lindsey, Alan R. 3; Affiliation: 1: Villanova University. 2: University of Southern California. 3: Air Force Research Laboratory.; Source Info: Jan2004, Vol. 40 Issue 1, p80; Subject Term: GLOBAL Positioning System; Subject Term: ARTIFICIAL satellites; Subject Term: ERRORS; Subject Term: SIGNAL processing; Subject Term: SENSOR networks; Subject Term: ELECTRIC interference; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13262819&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roberts, Thomas M. T1 - Measured and Predicted Behavior of Pulses in Debye-and Lorentz-Type Materials. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2004/01// VL - 52 IS - 1 M3 - Article SP - 310 EP - 314 SN - 0018926X AB - Published laboratory measurements are found to agree with two groups' completely independent asymptotics for the decay and spread of transient pulses in a Debye model, and the spread in a Lorentz model. The measured dc-content pulses decay with depth nearly as x-½ (water) and x-⅓ (concrete) in coaxial cables. The measured full-widths at half-maximum spread nearly as the reciprocal of the decay rates. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LABORATORIES KW - ELECTRIC cables KW - MICROWAVE transmission lines KW - ROPE KW - CABLES KW - RESEARCH KW - Electromagnetic propagation in dispersive media KW - microwave measurements KW - phase distortion KW - pulse analysis KW - pulse measurements. N1 - Accession Number: 12874372; Roberts, Thomas M. 1; Email Address: RobertsT@Maxwell.rl.plh.af.mil; Affiliation: 1: Air Force Research Laboratory/SNHA, Hanscom AFB, MA 01731-2909 USA.; Source Info: Jan2004, Vol. 52 Issue 1, p310; Subject Term: LABORATORIES; Subject Term: ELECTRIC cables; Subject Term: MICROWAVE transmission lines; Subject Term: ROPE; Subject Term: CABLES; Subject Term: RESEARCH; Author-Supplied Keyword: Electromagnetic propagation in dispersive media; Author-Supplied Keyword: microwave measurements; Author-Supplied Keyword: phase distortion; Author-Supplied Keyword: pulse analysis; Author-Supplied Keyword: pulse measurements.; NAICS/Industry Codes: 332619 Other fabricated wire product manufacturing; NAICS/Industry Codes: 332618 Other Fabricated Wire Product Manufacturing; NAICS/Industry Codes: 335920 Communication and energy wire and cable manufacturing; NAICS/Industry Codes: 335990 All other electrical equipment and component manufacturing; NAICS/Industry Codes: 621511 Medical Laboratories; NAICS/Industry Codes: 541380 Testing Laboratories; NAICS/Industry Codes: 541940 Veterinary Services; NAICS/Industry Codes: 314990 All other textile product mills; NAICS/Industry Codes: 314994 Rope, Cordage, Twine, Tire Cord, and Tire Fabric Mills; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TAP.2003.822414 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12874372&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shore, Robert A. AU - Yaghjian, Arthur D. T1 - A Comparison of High-Frequency Scattering Determined From PO Fields Enhanced With Alternative ILDCs. JO - IEEE Transactions on Antennas & Propagation JF - IEEE Transactions on Antennas & Propagation Y1 - 2004/01// VL - 52 IS - 1 M3 - Article SP - 336 EP - 341 SN - 0018926X AB - In order to compare the accuracy of "source-based" and "diffraction-cone" incremental length diffraction coefficients (ILDCs), the high-frequency scattered far fields of a perfectly conducting circular disk are computed using physical optics (PO) enhanced with source-based and diffraction-cone ILDCs. For angles of incidence and scattering that are near grazing to the disk, the diffraction-cone ILDCs predict bistatic scattered far fields that are generally much greater than the exact far fields and that are much less accurate than the scattered far fields predicted by the source-based ILDCs. These results lead us to conclude that the source-based ILDCs are preferable for improving upon the accuracy of PO fields computed with general purpose computer codes. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Antennas & Propagation is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSICS KW - OPTICS KW - LIGHT -- Wave-length KW - PHYSICAL optics KW - CONES KW - LIGHT KW - High frequency scattering KW - incremental length diffraction coefficients KW - physical theory of diffraction. N1 - Accession Number: 12874379; Shore, Robert A. 1 Yaghjian, Arthur D. 1; Email Address: arthur.yaghjian@ hanscom.af.ml; Affiliation: 1: Air Force Research Laboratory/Antenna Technology Branch (SNHA), Hanscom AFB, MA 01731 USA.; Source Info: Jan2004, Vol. 52 Issue 1, p336; Subject Term: PHYSICS; Subject Term: OPTICS; Subject Term: LIGHT -- Wave-length; Subject Term: PHYSICAL optics; Subject Term: CONES; Subject Term: LIGHT; Author-Supplied Keyword: High frequency scattering; Author-Supplied Keyword: incremental length diffraction coefficients; Author-Supplied Keyword: physical theory of diffraction.; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TAP.2003.822452 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12874379&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lang Hong AU - Shan Cong, F. J. AU - Wicker, Devert T1 - Distributed Multirate Interacting Multiple Model Fusion (DMRIMMF) With Application to Out-of-Sequence GMTI Data. JO - IEEE Transactions on Automatic Control JF - IEEE Transactions on Automatic Control Y1 - 2004/01// VL - 49 IS - 1 M3 - Article SP - 102 EP - 107 SN - 00189286 AB - This note develops a distributed approach for fusing ground moving target indicator data with out-of-sequence (OOS) measurements. A multirate interacting multiple model (MRIMM) fusion algorithm is developed for effectively fusing multirate information. The multirate approach provides an excellent framework for efficient information reproduction and forward update. A multirate interacting multiple model filter is employed locally to track a target with or without maneuvering behavior. The combination of global MRIMM fusion and local MRIMM tracking proves to be powerful for tracking and fusing maneuvering and nonmaneuvering targets in an environment of OOS measurement reporting. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Automatic Control is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - ALGEBRA KW - BEHAVIOR KW - STRUCTURAL frames KW - MATHEMATICS KW - STRUCTURAL design KW - Multirate processing KW - out-of-sequence (OOS) measurements KW - target tracking KW - track fusion. N1 - Accession Number: 12224043; Lang Hong 1; Email Address: lhong@cs.wright.edu Shan Cong, F. J. 1 Wicker, Devert 2; Affiliation: 1: Department of Electrical Engineering, Wright State University, Dayton, OH 45435 USA. 2: Target Recognition Branch, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433 USA.; Source Info: Jan2004, Vol. 49 Issue 1, p102; Subject Term: ALGORITHMS; Subject Term: ALGEBRA; Subject Term: BEHAVIOR; Subject Term: STRUCTURAL frames; Subject Term: MATHEMATICS; Subject Term: STRUCTURAL design; Author-Supplied Keyword: Multirate processing; Author-Supplied Keyword: out-of-sequence (OOS) measurements; Author-Supplied Keyword: target tracking; Author-Supplied Keyword: track fusion.; NAICS/Industry Codes: 238350 Finish Carpentry Contractors; NAICS/Industry Codes: 238130 Framing Contractors; Number of Pages: 5p; Document Type: Article L3 - 10.1109/TAC.2003.821410 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12224043&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Psaromiligkos, Toannis N. AU - Batalama, Stella N. T1 - Recursive Short-Data-Record Estimation of AV and MMSE/MVDR Linear Filters for DS-CDMA Antenna Array Systems. JO - IEEE Transactions on Communications JF - IEEE Transactions on Communications Y1 - 2004/01// VL - 52 IS - 1 M3 - Article SP - 136 EP - 148 SN - 00906778 AB - The presence of the desired signal during estimation of the minimum mean-square error (MMSE)/minimum-Variance distortionless response (MVDR) and auxiliary-vector (AV) filters under limited data support leads to significant signal-to-interference-plus-noise ratio (SINR) performance degradation. We quantify this observation in the context of direct-sequence code-division multiple-access (DS-CDMA) communications by deriving close approximations for the mean-square filter estimation error, the probability density function of the output SINR, and the probability density function of the symbol-error rate (SER) of the sample matrix inversion (SMI) receiver evaluated using both a desired-signal- "present" and desired-signal-"absent" input covariance matrix. To avoid such performance degradation, we propose a DS-CDMA receiver that utilizes a simple pilot-assisted algorithm that estimates and then subtracts the desired signal component from the received signal prior to filter estimation. Then, to accommodate decision-directed operation, we develop two recursive algorithms for the on-line estimation of the AV and MMSE/MVDR filter and we study their convergence properties. Finally, simulation studies illustrate the SER performance of the overall receiver structures. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CODE division multiple access KW - ADAPTIVE filters KW - APPROXIMATION theory KW - ESTIMATION theory KW - ALGORITHMS KW - SIMULATION methods & models KW - ANTENNA arrays KW - Adaptive filters KW - code-division multiple access (CDMA) KW - multiple-access interference (MAI) suppression KW - recursive estimation KW - signal-present/signal-absent filter estimation KW - space-time (ST) processing KW - stochastic approximation. N1 - Accession Number: 12364661; Psaromiligkos, Toannis N. 1; Email Address: yannis@ece.mcgill.ca Batalama, Stella N. 2; Email Address: batalama@eng.buffitlo.edu; Affiliation: 1: Department of Electrical and Computer Engineering. McGill University. Montréal. QC H3H 2N4 Canada. 2: U.S. Air Force Research Laboratory (AFRL), Rome. NY.; Source Info: Jan2004, Vol. 52 Issue 1, p136; Subject Term: CODE division multiple access; Subject Term: ADAPTIVE filters; Subject Term: APPROXIMATION theory; Subject Term: ESTIMATION theory; Subject Term: ALGORITHMS; Subject Term: SIMULATION methods & models; Subject Term: ANTENNA arrays; Author-Supplied Keyword: Adaptive filters; Author-Supplied Keyword: code-division multiple access (CDMA); Author-Supplied Keyword: multiple-access interference (MAI) suppression; Author-Supplied Keyword: recursive estimation; Author-Supplied Keyword: signal-present/signal-absent filter estimation; Author-Supplied Keyword: space-time (ST) processing; Author-Supplied Keyword: stochastic approximation.; Language of Keywords: German; Number of Pages: 13p; Document Type: Article L3 - 10.1109/TCOMM.2003.822186 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12364661&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, Chung-Chi AU - Tsang, Leung AU - Chan, Chi Hou AU - Ding, Kung-Hau T1 - Multiple Scattering Among Vias in Planar Waveguides Using Preconditioned SMCG Method. JO - IEEE Transactions on Microwave Theory & Techniques JF - IEEE Transactions on Microwave Theory & Techniques Y1 - 2004/01//Jan2004 Part 1 of 2 VL - 52 IS - 1 M3 - Article SP - 20 EP - 28 SN - 00189480 AB - Reports on the formulation of full-wave modeling for cylindrical vias in planar waveguides using Foldy-Lax multiple scattering equations. Proposed sparse-matrix canonical-grid method based on fast Fourier transform and an iterative algorithm to solve a large-scale via problem; Improvement of computational efficiency by a preconditioning scheme based on the dominant information contained in the near field. KW - WAVEGUIDES KW - SCATTERING (Mathematics) KW - FOURIER transforms KW - ALGORITHMS KW - LARGE scale integration of circuits KW - INTEGRATED circuits N1 - Accession Number: 12354011; Huang, Chung-Chi 1 Tsang, Leung 1,2 Chan, Chi Hou 2 Ding, Kung-Hau 3; Affiliation: 1: Department of Electrical Engineering, University of Washington, Seattle, WA, USA 2: Department of Electronic Engineering, City University of Hong Kong, Hong Kong 3: Air Force Research Laboratory, Hanscom AFB, MA, USA; Source Info: Jan2004 Part 1 of 2, Vol. 52 Issue 1, p20; Subject Term: WAVEGUIDES; Subject Term: SCATTERING (Mathematics); Subject Term: FOURIER transforms; Subject Term: ALGORITHMS; Subject Term: LARGE scale integration of circuits; Subject Term: INTEGRATED circuits; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 9p; Illustrations: 4 Black and White Photographs, 1 Diagram, 1 Chart, 15 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12354011&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - John, R. AU - Porter III, W.J. AU - Olson, S. T1 - Measurement and modeling of orthotropic elastic behavior of grains in a gamma titanium aluminide alloy JO - Intermetallics JF - Intermetallics Y1 - 2004/01// VL - 12 IS - 1 M3 - Article SP - 1 SN - 09669795 AB - Gamma titanium aluminide (γ-TiAl) alloys have been under development for use in rotating components for gas turbine engines. Detailed three-dimensional (3D) grain-level finite element models are being developed to predict damage initiation and accumulation in γ-TiAl during service loading. These models require knowledge of the orthotropic nature of the elastic and plastic deformation of individual grains. While the elastic properties of gamma and alpha-2 single-phase materials have been extensively studied, the elastic response of fully lamellar two-phase materials has not received the same degree of attention. This paper describes an integrated experimental and analytical approach to deduce the elastic grain properties in a γ-TiAl. Specimens with gage sections composed of specifically-oriented individual lamellar grains were tested in tension. 3D finite element analyses were used to deduce the elastic grain properties. These grain properties were used to accurately predict the elastic properties of polysynthetically-twinned (PST) and polycrystalline γ-TiAl. [Copyright &y& Elsevier] AB - Copyright of Intermetallics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - ALUMINUM alloys KW - ELASTICITY KW - ALLOYS KW - A. Titanium aluminides based on TiAl KW - B. Anisotropy KW - E. Mechanical properties, theory KW - Elastic properties KW - F. Mechanical testing N1 - Accession Number: 11536249; John, R. 1; Email Address: reji.john@wpafb.af.mil Porter III, W.J. 2 Olson, S. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/MLLMN), Wright-Patterson Air Force Base, OH 45433, USA 2: University of Dayton Research Institute (UDRI), Dayton, OH 45469, USA; Source Info: Jan2004, Vol. 12 Issue 1, p1; Subject Term: TITANIUM alloys; Subject Term: ALUMINUM alloys; Subject Term: ELASTICITY; Subject Term: ALLOYS; Author-Supplied Keyword: A. Titanium aluminides based on TiAl; Author-Supplied Keyword: B. Anisotropy; Author-Supplied Keyword: E. Mechanical properties, theory; Author-Supplied Keyword: Elastic properties; Author-Supplied Keyword: F. Mechanical testing; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.intermet.2003.07.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11536249&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - RPRT AU - Rizzetta, Donald P. AU - Visbal, Miguel R. T1 - Large-eddy Simulation of Supersonic Boundary-layer Flow by a High-order Method. JO - International Journal of Computational Fluid Dynamics JF - International Journal of Computational Fluid Dynamics Y1 - 2004/01// VL - 18 IS - 1 M3 - Report SP - 15 EP - 27 SN - 10618562 AB - Reports on the high-order numerical method for large-eddy simulations of supersonic flowfields. Incorporation of two different subgrid models in the simulations to account for the spatially under-resolved stresses and heat flux; Consideration of both the Smagorinsky and dynamic subgrid stress formulations in the simulation along with a computation which employed no model; Agreement between experimental data and previous computations. KW - SUPERSONIC aerodynamics KW - SIMULATION methods & models KW - HYDRAULIC models KW - ENGINEERING models KW - Compact finite-difference scheme; KW - Dynamic subgrid-stress model; KW - Flat-plate boundary-layer flow KW - High-order numerical method; KW - Large-eddy simulation; N1 - Accession Number: 12416111; Rizzetta, Donald P. 1 Visbal, Miguel R. 2; Affiliation: 1: Air Force Research Laboratory, AFRL/VAAC Bldg. 146, 2210 Eighth St., Wright-Patterson AFB, OH 45433-7512, USA. 2: Air Force Laboratory, AFRL/VAAC Bldg. 146, 2210 Eighth St., Wright-Patterson AFB, OH 45433-7512, USA.; Source Info: Jan2004, Vol. 18 Issue 1, p15; Subject Term: SUPERSONIC aerodynamics; Subject Term: SIMULATION methods & models; Subject Term: HYDRAULIC models; Subject Term: ENGINEERING models; Author-Supplied Keyword: Compact finite-difference scheme;; Author-Supplied Keyword: Dynamic subgrid-stress model;; Author-Supplied Keyword: Flat-plate boundary-layer flow; Author-Supplied Keyword: High-order numerical method;; Author-Supplied Keyword: Large-eddy simulation;; Number of Pages: 13p; Illustrations: 2 Charts, 15 Graphs; Document Type: Report UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12416111&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Salcedo, D. AU - Villalta, P.W. AU - Varutbangkul, V. AU - Wormhoudt, J.C. AU - Miake-Lye, R.C. AU - Worsnop, D.R. AU - Ballenthin, J.O. AU - Thorn, W.F. AU - Viggiano, A.A. AU - Miller, T.M. AU - Flagan, R.C. AU - Seinfeld, J.H. T1 - Effect of relative humidity on the detection of sulfur dioxide and sulfuric acid using a chemical ionization mass spectrometer JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2004/01// VL - 231 IS - 1 M3 - Article SP - 17 EP - 30 SN - 13873806 AB - Detection of sulfur dioxide and sulfuric acid at high relative humidity was studied using a chemical ionization mass spectrometer (CIMS). The reactant ions used in the experiments are CO3−·nH2O (n=0–5), which react with SO2 to form SO5−·nH2O (n=0–2). H2SO4 reacts with the precursor ions to form HSO4− (m/z=97 amu) and H2SO4·CO3− (m/z=158 amu). We report the first use of the latter ionization scheme to detect sulfuric acid. High RH affects the detection of SO2 and H2SO4 by forming clusters with the reactant and product ions, reducing sensitivity. Increasing the temperature breaks these clusters. For SO2 at high RH, either SO5− (m/z=112 amu) or SO5−·H2O (m/z=130 amu) can be used for SO2 detection without a decrease in sensitivity. For H2SO4 at high RH, it is preferred to detect the ion H2SO4·CO3− because the background signal at 158 amu is small, and a better sensitivity can be achieved. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HUMIDITY KW - SPECTRUM analysis -- Instruments KW - MASS spectrometers KW - IONS KW - Chemical ionization mass spectrometer KW - Relative humidity KW - Sulfur dioxide KW - Sulfuric acid KW - Water clusters N1 - Accession Number: 22239221; Salcedo, D. 1 Villalta, P.W. 2 Varutbangkul, V. 1 Wormhoudt, J.C. 2 Miake-Lye, R.C. 2 Worsnop, D.R. 2 Ballenthin, J.O. 3 Thorn, W.F. 3 Viggiano, A.A. 3 Miller, T.M. 3 Flagan, R.C. 1 Seinfeld, J.H. 1; Email Address: seinfeld@caltech.edu; Affiliation: 1: Chemical Engineering Department, California Institute of Technology, Pasadena, CA 91125, USA 2: Aerodyne Research Inc., Billerica, MA, USA 3: Air Force Research Laboratory, Hanscom Air Force, Hanscom, MA, USA; Source Info: Jan2004, Vol. 231 Issue 1, p17; Subject Term: HUMIDITY; Subject Term: SPECTRUM analysis -- Instruments; Subject Term: MASS spectrometers; Subject Term: IONS; Author-Supplied Keyword: Chemical ionization mass spectrometer; Author-Supplied Keyword: Relative humidity; Author-Supplied Keyword: Sulfur dioxide; Author-Supplied Keyword: Sulfuric acid; Author-Supplied Keyword: Water clusters; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.ijms.2003.09.005 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=22239221&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ballal, Dilip R. AU - Zelina, Joseph T1 - Progress in Aeroengine Technology (1939-2003). JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2004/01//Jan/Feb2004 VL - 41 IS - 1 M3 - Article SP - 43 EP - 50 SN - 00218669 AB - Second only to the invention of an airplane by the Wright Brothers 100 years ago, the jet engine has revolutionized both military and civil aviation. We present a survey of the key aeroengine technology trends. Since 1939, engine thrust has increased over 100-fold and the (thrust/weight) ratio to 7. Whereas the early jet engines barely lasted for less than 10 hours, today's civil engines can stay on wings for up to 10,000 hours, and high-performance military engines can last several hundred hours. Advances in blade cooling technologies and high-temperature materials have permitted an increase in turbine inlet temperature from 1280 to 3200°F. Today, engine thermal efficiency is approaching 50%. Also, today's most powerful aeroengines already meet the International Civil Aviation Organization ultra-low gaseous and smoke requirements. Finally, civil and military technology is moving along the direction set by the versatile affordable advanced turbine engines (VAATE) propulsion capability goals. The spectacular achievements of the last century truly provide an outstanding start for many future achievements to come in the field of aeroengine technology, along the lines of the VAATE goals. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TECHNOLOGY KW - JET engines KW - COMMERCIAL aeronautics KW - MILITARY aeronautics KW - WRIGHT, Orville, 1871-1948 KW - WRIGHT, Wilbur, 1867-1912 N1 - Accession Number: 12783455; Ballal, Dilip R. 1 Zelina, Joseph 2; Affiliation: 1: University of Dayton, Dayton, Ohio 45469-0102 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7251; Source Info: Jan/Feb2004, Vol. 41 Issue 1, p43; Subject Term: TECHNOLOGY; Subject Term: JET engines; Subject Term: COMMERCIAL aeronautics; Subject Term: MILITARY aeronautics; NAICS/Industry Codes: 481110 Scheduled air transportation; NAICS/Industry Codes: 481111 Scheduled Passenger Air Transportation; NAICS/Industry Codes: 481112 Scheduled Freight Air Transportation; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 481215 Non-scheduled specialty flying services; People: WRIGHT, Orville, 1871-1948; People: WRIGHT, Wilbur, 1867-1912; Number of Pages: 8p; Illustrations: 16 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12783455&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Biber, Kasim AU - Tilmann, Carl P. T1 - Supercritical Airfoil Design for Future High-Altitude Long-Endurance Concepts. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2004/01//Jan/Feb2004 VL - 41 IS - 1 M3 - Article SP - 156 EP - 164 SN - 00218669 AB - The design and analysis is presented of a new laminar flow airfoil for a future high-altitude long-endurance aircraft that has an operational condition at supercritical speeds. The XFOIL and MSES computational codes were used to design, modify, and analyze the airfoil. The airfoil has enough thickness and performance to meet the requirements set for one of the U.S. Air Force Research Laboratory's SensorCraft concepts: a joined-wing configuration with a diamond shape in planform and front views. This SensorCraft concept's geometry and operational altitudes and speeds were used to determine the airfoil design conditions. The airfoil has a drag bucket over a large range of lift coefficients. Boundary-layer transition location is at about 60% chord upper surface and 70% chord lower surface and is characterized by a laminar separation bubble, which decreases in size with increasing angle of attack. Sensitivity studies were carried out to investigate the effects of Reynolds number and Mach number, along with boundary-layer transition parameters. Further experimental work needs to be performed to validate the design. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROFOILS KW - DESIGN KW - AERONAUTICS KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 12783468; Biber, Kasim 1; Email Address: kxbiber@yahoo.com Tilmann, Carl P. 2,3,4; Affiliation: 1: Istanbul Technical University, 34870 Istanbul, Turkey 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542 3: Senior Aerospace Engineer, Air Vehicles Directorate, AFRL/VAAA, Building 45, 2130 8th Street 4: Associate Fellow, AIAA; Source Info: Jan/Feb2004, Vol. 41 Issue 1, p156; Subject Term: AEROFOILS; Subject Term: DESIGN; Subject Term: AERONAUTICS; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 928110 National Security; Number of Pages: 9p; Illustrations: 2 Diagrams, 1 Chart, 20 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12783468&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lobad, Ahmed AU - Schlie, L. A. (Vern) T1 - Carrier thermalization, cooling and diffusion in InSb through a nonlinear pump-probe technique. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2004/01//1/1/2004 VL - 95 IS - 1 M3 - Article SP - 97 EP - 101 PB - American Institute of Physics SN - 00218979 AB - We investigated the ultrafast carrier dynamics in InSb using a nonlinear pump-probe technique. The measurement involves two pump pulses chopped at different frequencies and the detection of the probe modulation at their sum frequency. We show that the nonlinear signature and dynamics of the transmission-bleaching signal enables the differentiation of carrier thermalization from cooling dynamics. We follow the evolution of the injected carrier distribution from a nonthermal to a thermal one and calculate its absolute temperature and energy decay rates as a function of time from a single transmission pump-probe measurement. The carrier scattering rate in the thermalization stage increases by (3 ps)-1 with doubling the injected carrier density. For an initial injected excess energy of 650 K, carrier thermalization is complete after 1.7 ps with a thermal distribution of 370 K. We also demonstrate the ability to follow carrier diffusion through the decay of the carrier grating decay in a transmission measurement. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INDIUM compounds KW - THERMAL neutrons KW - FREQUENCIES of oscillating systems KW - HEAT transfer KW - SCATTERING (Physics) KW - MECHANICS (Physics) N1 - Accession Number: 11713088; Lobad, Ahmed 1 Schlie, L. A. (Vern) 1; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate (AFRI/DEL) New Mexico; Source Info: 1/1/2004, Vol. 95 Issue 1, p97; Subject Term: INDIUM compounds; Subject Term: THERMAL neutrons; Subject Term: FREQUENCIES of oscillating systems; Subject Term: HEAT transfer; Subject Term: SCATTERING (Physics); Subject Term: MECHANICS (Physics); Number of Pages: 5p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.1633350 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11713088&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Knighton, W. B. AU - Miller, Thomas M. AU - Grimsrud, E. P. AU - Viggiano, A. A. T1 - Electron attachment to PSCl[sub 3]. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2004/01//1/1/2004 VL - 120 IS - 1 M3 - Article SP - 211 EP - 216 PB - American Institute of Physics SN - 00219606 AB - Electron attachment to PSCl[sub 3] was studied in 133-Pa pressure of helium gas at temperatures from 298–550 K. Measurements of rate constants and branching fractions were made in a flowing-afterglow Langmuir-probe (FALP) apparatus. These experiments yielded an electron attachment rate constant of 5.1×10[sup -8] cm[sup 3] s[sup -1] that was found not to change significantly in the 298–550 K temperature range. This rate constant represents an attachment efficiency of about 14%. Attachment in 133 Pa of He gas yielded only the dissociative ion products PSCl[sub 2][sup -] and Cl[sup -]. The FALP data suggest that there is an activation energy of about 17 meV for production of PSCl[sub 2][sup -]. Attachment to PSCl[sub 3] was also studied at high pressure (9–93 kPa) of N[sub 2] in an ion mobility mass spectrometer, at 298 K. In contrast to the low-pressure data, the parent anion product channel (PSCl[sub 3][sup -]) was observed (along with the dissociative channels), and increased in importance with N[sub 2] pressure. Gaussian-3 (G3) calculations were carried out for PSCl[sub 3] and PSCl[sub 2] neutrals and anions to aid in interpretation of the experimental results. The calculations indicate that the electron affinity EA(PSCl[sub 2]) is slightly smaller than EA(Cl), which may account for the observed branching fractions for PSCl[sub 2][sup -] and Cl[sup -] in the low-pressure experiments. A natural population analysis was performed to obtain the charges associated with each atom in the molecules in order to estimate how the attached electron is distributed. Comparison is made between the present study of electron attachment to PSCl[sub 3] and our earlier work on attachment to POCl[sub 3], and G3 calculations are reported here for neutral and anionic POCl[sub 2] and POCl[sub 3]. In contrast to PSCl[sub 2], the calculations imply that EA(POCl[sub 2]) is slightly greater than EA(Cl). For both PSCl[sub 3] and POCl[sub 3], the calculations show that the dissociative electron attachment process is close to thermoneutral. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HELIUM KW - ELECTRON configuration KW - THERMODYNAMICS KW - ELECTRON distribution KW - NOBLE gases KW - MASS spectrometers N1 - Accession Number: 11762323; Knighton, W. B. 1 Miller, Thomas M. 2 Grimsrud, E. P. 1 Viggiano, A. A. 2; Affiliation: 1: Department of Chemistry, Montona State University, Bozeman, Montona 59717 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Bedford, Massachusetts 01731-3010; Source Info: 1/1/2004, Vol. 120 Issue 1, p211; Subject Term: HELIUM; Subject Term: ELECTRON configuration; Subject Term: THERMODYNAMICS; Subject Term: ELECTRON distribution; Subject Term: NOBLE gases; Subject Term: MASS spectrometers; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; Number of Pages: 6p; Illustrations: 5 Charts, 4 Graphs; Document Type: Article L3 - 10.1063/1.1630300 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11762323&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, Zhongmin AU - Wu, Y.Q. AU - Kramer, M.J. AU - Smith, Benjamin R. AU - Ma, Bao-Min AU - Huang, Mei-Qing T1 - A study on the role of Nb in melt-spun nanocrystalline Nd–Fe–B magnets JO - Journal of Magnetism & Magnetic Materials JF - Journal of Magnetism & Magnetic Materials Y1 - 2004/01// VL - 268 IS - 1/2 M3 - Article SP - 105 SN - 03048853 AB - The effect of Nb substitution on the thermal stability of melt-spun powders with near stoichiometric 2:14:1 composition of Nd12Fe82−xNbxB6 (x=0, 1.5 and 3) has been investigated. It has been found that the thermal stability is significantly improved with 1.5 at% Nb substitution. As compared with the ternary Nd12Fe82B6, the Nb-substituted Nd12Fe80.5Nb1.5B6 powder exhibits remarkably increased coercivity (Hci) over a wide temperature range of 22–180°C. The temperature coefficient of coercivity (β) is reduced from −0.36%/°C at x=0 to −0.32%/°C at x=1.5. As a result of improved coercivity and its temperature dependence, the irreversible flux aging loss (δirr), measured on the epoxy bonded magnets after being exposed at 180°C for 100 h, is also significantly decreased from −13.7% at x=0 to −5.0% with x=1.5. Microstructure studies using X-ray diffraction and transmission electron microscopy have shown a significant microstructure refinement with Nb substitution. Nb substitution also increases the amount of α-Fe phase in the alloys. For x=0, the average grain size of the magnetically soft phase (α-Fe) is 15 nm, while the hard phase (Nd2Fe14B) has an average grain size of 30 nm. The soft and hard magnetically phases are reduced to <10 and 10–20 nm, respectively for x=1.5 and 3. Enriched Nb along the grain boundaries is believed to be the main reason for the observed improved thermal stability in Nb-substituted powders. [Copyright &y& Elsevier] AB - Copyright of Journal of Magnetism & Magnetic Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NIOBIUM KW - STOICHIOMETRY KW - MELT spinning KW - TRANSMISSION electron microscopy KW - 68.37.Lp KW - Microstructure KW - Nanocrystalline magnet KW - Nb KW - Thermal stability N1 - Accession Number: 11252127; Chen, Zhongmin 1 Wu, Y.Q. 2; Email Address: yqwu@ameslab.gov Kramer, M.J. 2 Smith, Benjamin R. 1 Ma, Bao-Min 1 Huang, Mei-Qing 3; Affiliation: 1: Magnequench Technology Center, 9000 Development Drive, PO Box 14827, Research Triangle Park, NC 27709-4827, USA 2: Ames Laboratory, Department of Materials Science and Engineering, Iowa State University, 136C Wilhelm Hall, Ames, IA 50011, USA 3: Air Force Research Laboratory, Wright Peterson Air Force Base, Dayton, OH 45433, USA; Source Info: Jan2004, Vol. 268 Issue 1/2, p105; Subject Term: NIOBIUM; Subject Term: STOICHIOMETRY; Subject Term: MELT spinning; Subject Term: TRANSMISSION electron microscopy; Author-Supplied Keyword: 68.37.Lp; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Nanocrystalline magnet; Author-Supplied Keyword: Nb; Author-Supplied Keyword: Thermal stability; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 9p; Document Type: Article L3 - 10.1016/S0304-8853(03)00481-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11252127&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hannah, Gregg AU - Cook, James T1 - Book Reviews. JO - Journal of Military Ethics JF - Journal of Military Ethics Y1 - 2004/01// VL - 3 IS - 1 M3 - Book Review SP - 75 EP - 78 PB - Routledge SN - 15027570 AB - Reviews the book "The Bridge at No Gun Ri: A Hidden Nightmare from the Korean War," by Charles J. Hanley, Sang Hun Choe and Martha Mendoza. KW - WAR KW - NONFICTION KW - MENDOZA, Martha KW - CHOE, Sang-Hun KW - BRIDGE at No Gun Ri: A Hidden Nightmare From the Korean War, The (Book) N1 - Accession Number: 12633600; Hannah, Gregg 1 Cook, James 2; Affiliation: 1: Assistant Professor, Royal Military College of Canada 2: Lieutenant Colonel, United States Air Force Academy; Source Info: Jan2004, Vol. 3 Issue 1, p75; Subject Term: WAR; Subject Term: NONFICTION; Reviews & Products: BRIDGE at No Gun Ri: A Hidden Nightmare From the Korean War, The (Book); People: MENDOZA, Martha; People: CHOE, Sang-Hun; Number of Pages: 4p; Document Type: Book Review L3 - 10.1080/15027570310004942 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12633600&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Within-ear and across-ear interference in a dichotic cocktail party listening task: Effects of masker uncertainty. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2004/01// VL - 115 IS - 1 M3 - Article SP - 301 EP - 310 SN - 00014966 AB - Increases in masker variability have been shown to increase the effects of informational masking in non-speech listening tasks, but relatively little is known about the influence that masker uncertainty has on the informational components of speech-on-speech masking. In this experiment, listeners were asked to extract information from a target phrase that was presented in their right ear while ignoring masking phrases that were presented in the same ear as the target phrase and in the ear opposite the target phrase. The level of masker uncertainty was varied by holding constant or ''freezing'' the talkers speaking the masking phrases, the semantic content used in the masking phrases, or both the talkers and the semantic content in the masking phrases within each block of 120 trials. The results showed that freezing the semantic content of the masking phrase in the target ear was the only reduction in masker uncertainty that ever resulted in a significant improvement in performance. Providing feedback after each trial improved performance overall, but did not prevent the listeners from making incorrect responses that matched the content of the frozen target-ear masking phrase. However, removing the target-ear contents corresponding to the masking phrase from the response set resulted in a dramatic improvement in performance. This suggests that the listeners were generally able to understand both of the phrases presented to the target ear, and that their incorrect responses in the task were almost entirely a result of their inability to determine which words were spoken by the target talker. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEARING KW - LISTENING KW - EAR KW - SOUND KW - ACOUSTICAL engineering KW - INTERFERENCE (Sound) KW - INTERFERENCE (Perception) N1 - Accession Number: 20589717; Brungart, Douglas S. 1 Simpson, Brian D. 1; Affiliation: 1: Air Force Research Laboratory, 2610 Seventh Street, Wright-Patterson AFB, Ohio 45433-7901; Source Info: Jan2004, Vol. 115 Issue 1, p301; Subject Term: HEARING; Subject Term: LISTENING; Subject Term: EAR; Subject Term: SOUND; Subject Term: ACOUSTICAL engineering; Subject Term: INTERFERENCE (Sound); Subject Term: INTERFERENCE (Perception); Number of Pages: 10p; Illustrations: 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1121/1.1628683# UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20589717&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sihn, Sangwook AU - Roy, Ajit K. T1 - Modeling and prediction of bulk properties of open-cell carbon foam JO - Journal of the Mechanics & Physics of Solids JF - Journal of the Mechanics & Physics of Solids Y1 - 2004/01// VL - 52 IS - 1 M3 - Article SP - 167 SN - 00225096 AB - The emerging ultralightweight material, carbon foam, was modeled with three-dimensional microstructures to develop a basic understanding in correlating microstructural configuration with bulk performance of open-cell foam materials. Because of the randomness and complexity of the microstructure of the carbon foam, representative cell ligaments were first characterized in detail at the microstructural level. The salient microstructural characteristics (or properties) were then correlated with the bulk properties through the present model. In order to implement the varying anisotropic nature of material properties in the foam ligaments, we made an attempt to use a finite element method to implement such variation along the ligaments as well as at a nodal point where the ligaments meet. The model was expected to provide a basis for establishing a process–property relationship and optimizing foam properties.The present model yielded a fairly reasonable prediction of the effective bulk properties of the foams. We observed that the effective elastic properties of the foams were dominated by the bending mode associated with shear deformation. The effective Young''s modulus of the foam was strongly influenced by the ligament moduli, but was not influenced by the ligament Poisson''s ratio. The effective Poisson''s ratio of the foam was practically independent of the ligament Young''s modulus, but dependent on the ligament Poisson''s ratio. The effective Young''s modulus of the carbon foam was dependent more on the transverse Young''s modulus and the shear moduli of the foam ligaments, but less significantly on the ligament longitudinal Young''s modulus. A parametric study indicated that the effective Young''s modulus was significantly improved by increasing the solid modulus in the middle of the foam ligaments, but nearly invariant with that at the nodal point where the ligaments meet. Therefore, appropriate processing schemes toward improving the transverse and shear properties of the foam ligaments in the middle section of the ligaments rather than at the nodal points are highly desirable for enhancing the bulk moduli of the carbon foam. [Copyright &y& Elsevier] AB - Copyright of Journal of the Mechanics & Physics of Solids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON KW - MICROSTRUCTURE KW - BULK solids KW - FINITE element method KW - Carbon foam KW - Effective bulk property KW - Finite element analysis KW - Microstructure KW - Open cell N1 - Accession Number: 11729470; Sihn, Sangwook 1; Email Address: sangwook@stanfordalumni.org Roy, Ajit K. 2; Affiliation: 1: University of Dayton Research Institute, Nonmetallic Division, 300 College Park, Dayton, OH 45469-0168, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLBC, 2941 P St Rm. 136, WPAFB, OH 45433-7750, USA; Source Info: Jan2004, Vol. 52 Issue 1, p167; Subject Term: CARBON; Subject Term: MICROSTRUCTURE; Subject Term: BULK solids; Subject Term: FINITE element method; Author-Supplied Keyword: Carbon foam; Author-Supplied Keyword: Effective bulk property; Author-Supplied Keyword: Finite element analysis; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Open cell; NAICS/Industry Codes: 484222 Dry bulk materials trucking, local; NAICS/Industry Codes: 484232 Dry bulk materials trucking, long distance; Number of Pages: 25p; Document Type: Article L3 - 10.1016/S0022-5096(03)00072-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11729470&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Mastroianni, George K. T1 - LETTER TO THE EDITOR. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2004/01// VL - 16 IS - 1 M3 - Letter SP - 71 EP - 74 PB - Taylor & Francis Ltd SN - 08995605 AB - Presents a letter to the editor that focuses on the fact that the 2001 research report by "Millitary Psychology," is an egregious violation of the ethical standards of the American Psychological Association. KW - LETTERS to the editor KW - MILITARY research N1 - Accession Number: 12437565; Mastroianni, George K. 1; Affiliation: 1: Professor of Psychology Chair, Institutional Review Board US Air Force Academy.; Source Info: Jan2004, Vol. 16 Issue 1, p71; Subject Term: LETTERS to the editor; Subject Term: MILITARY research; Number of Pages: 4p; Document Type: Letter UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12437565&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brown, Gail J. AU - Houston, Shanee AU - Szmulowicz, Frank T1 - Type-II InAs/GaSb superlattices for very long wavelength infrared detectors JO - Physica E JF - Physica E Y1 - 2004/01// VL - 20 IS - 3/4 M3 - Article SP - 471 SN - 13869477 AB - Type-II superlattices (SLs) can be designed for semiconductor band gaps as large as 400 meV down to semimetallic. This flexibility in design makes them an excellent candidate for infrared photodiodes with cut-off wavelengths beyond 15 μm. There are relatively few options for high-performance infrared detectors to cover wavelengths longer than 15 μm, especially for operating temperatures above 15 K. In the past few years, excellent results have been obtained on photoconductive and photodiode samples designed for infrared detection in the very long wavelength infrared (VLWIR) range (λ>15 μm). There is a variety of possible designs for these SLs which will produce the same narrow band gap by adjusting individual layer thicknesses, or indium content, in the InGaSb layer. Several of these different design options have been grown and characterized. These designs often require monolayer control per layer over hundreds of repeats in the SL. Photoresponse spectra for type-II SLs are compared to show how the design choices not only change the band gap but also the band structure, as reflected in features observed in the spectra. Theoretical modeling results are used to interpret the photoresponse spectra. SLs with cut-off wavelengths ranging from 15 to 25 μm are covered. [Copyright &y& Elsevier] AB - Copyright of Physica E is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERLATTICES KW - PHOTODIODES KW - INDIUM arsenide KW - GALLIUM compounds KW - InAs/InGaSb KW - Infrared detectors KW - Photodiodes KW - Type-II superlattice N1 - Accession Number: 11960013; Brown, Gail J.; Email Address: gail.brown@wpafb.af.mil Houston, Shanee 1 Szmulowicz, Frank 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH, USA; Source Info: Jan2004, Vol. 20 Issue 3/4, p471; Subject Term: SUPERLATTICES; Subject Term: PHOTODIODES; Subject Term: INDIUM arsenide; Subject Term: GALLIUM compounds; Author-Supplied Keyword: InAs/InGaSb; Author-Supplied Keyword: Infrared detectors; Author-Supplied Keyword: Photodiodes; Author-Supplied Keyword: Type-II superlattice; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.physe.2003.08.061 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11960013&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wu, X. AU - Averett, K.L. AU - Maimon, S. AU - Koch, M.W. AU - Wicks, G.W. T1 - Physical processes of current gain in InAs bipolar junction transistors JO - Physica E JF - Physica E Y1 - 2004/01// VL - 20 IS - 3/4 M3 - Article SP - 511 SN - 13869477 AB - InAs bipolar junction transistors (BJTs), grown by molecular beam epitaxy, are reported with common emitter current gains (β''s) as large as 400. The factors affecting the common emitter current gain have been studied by estimating the magnitudes of the base transport factor (αT) and emitter injection efficiency (γ). This has been accomplished by studying a sequence of InAs BJTs with varying emitter doping densities, NE. Minority carrier diffusion length in the base (LB), αT, and γ have been extracted from measured electrical characteristics. The results of the study of these InAs BJTs are as follows: LB≈0.4 μm, αT≈98% and γ ranges from 92% to nearly 100% depending on NE. This knowledge of the magnitudes of the injection efficiencies suggests when it would be useful to move from the simple BJT structure to the more advanced heterojunction bipolar transistor (HBT) structure. Lower γ BJTs would be improved, however high-γ BJTs would benefit little, by the use of the widegap emitters of HBTs. The method developed here to estimate γ, αT and LB is not specific to InAs BJTs, but should be useful for study of BJTs and HBTs in any material system. [Copyright &y& Elsevier] AB - Copyright of Physica E is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JUNCTION transistors KW - MOLECULAR beam epitaxy KW - INDIUM arsenide KW - EPITAXY KW - Base transport factor KW - Bipolar transistors KW - Current gain KW - Injection efficiency KW - Minority carrier diffusion length N1 - Accession Number: 11960021; Wu, X. 1; Email Address: xhwu@optics.rochester.edu Averett, K.L. 2 Maimon, S. 3 Koch, M.W. 3 Wicks, G.W. 3; Affiliation: 1: Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, USA 2: Air Force Research Laboratory, MLPS, Wright-Patterson AFB, OH 45433, USA 3: The Institute of Optics, University of Rochester, Rochester, NY 14627, USA; Source Info: Jan2004, Vol. 20 Issue 3/4, p511; Subject Term: JUNCTION transistors; Subject Term: MOLECULAR beam epitaxy; Subject Term: INDIUM arsenide; Subject Term: EPITAXY; Author-Supplied Keyword: Base transport factor; Author-Supplied Keyword: Bipolar transistors; Author-Supplied Keyword: Current gain; Author-Supplied Keyword: Injection efficiency; Author-Supplied Keyword: Minority carrier diffusion length; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.physe.2003.08.069 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11960021&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, H.J. AU - Brown, G.J. AU - Grazulis, L. AU - Mahalingam, K. AU - Tomich, D.H. T1 - Optimization of InAs/GaSb type-II superlattices for high performance of photodetectors JO - Physica E JF - Physica E Y1 - 2004/01// VL - 20 IS - 3/4 M3 - Article SP - 527 SN - 13869477 AB - The optimum growth conditions and strain balancing processes have been studied using molecular beam epitaxy (MBE) grown 51 A˚ InAs/40 A˚ GaSb type-II superlattices (SLs) designed to have cut-off wavelength of 10 μm. The most dominant factor in reducing the defect level in the SL structure was buffer growth temperature evidenced by transmission electron microscopy. In the study of the strain balancing process, the SLs could be lattice matched to the GaSb substrate by increasing the thickness of the InSb interfaces (IFs) from a nominal value of 1.0 to 1.4 ML, however, the structural quality degraded dramatically when the thickness of IFs reached beyond ∼1.0 ML. By optimizing the growth condition and MBE shutter sequences, micron thick InAs/GaSb SLs with a reduced lattice mismatch were routinely obtained with the full-width half-maximum of 18 arcsec, and the root mean square values of surface roughness of 2 A˚ in 5 μm area scan of atomic force microscopy demonstrating high quality. Correlation between material quality and photoresponse signal strength in photoconductivity measurements was made on SL samples with cut-off wavelength on the order of 10 μm. [Copyright &y& Elsevier] AB - Copyright of Physica E is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR beam epitaxy KW - INDIUM arsenide KW - GALLIUM compounds KW - SUPERLATTICES KW - A3. Molecular beam epitaxy KW - A3. Superlattices KW - B1. Antimonides KW - B3. Infrared detectors KW - B3. Semiconductor devices N1 - Accession Number: 11960025; Haugan, H.J.; Email Address: heather.haugan@wpafb.afrl.mil Brown, G.J. 1 Grazulis, L. 1 Mahalingam, K. 1 Tomich, D.H. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7707, USA; Source Info: Jan2004, Vol. 20 Issue 3/4, p527; Subject Term: MOLECULAR beam epitaxy; Subject Term: INDIUM arsenide; Subject Term: GALLIUM compounds; Subject Term: SUPERLATTICES; Author-Supplied Keyword: A3. Molecular beam epitaxy; Author-Supplied Keyword: A3. Superlattices; Author-Supplied Keyword: B1. Antimonides; Author-Supplied Keyword: B3. Infrared detectors; Author-Supplied Keyword: B3. Semiconductor devices; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.physe.2003.09.003 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11960025&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Park, Soo-Young AU - Koerner, Hilmar AU - Putthanarat, S. AU - Ozisik, Rahmi AU - Juhl, Shane AU - Farmer, B.L. AU - Eby, R.K. T1 - Structure of poly (p-phenylenebenzobisoxazole) (PBZO) and poly (p-phenylenebenzobisthiazole) (PBZT) for proton exchange membranes (PEMs) in fuel cells JO - Polymer JF - Polymer Y1 - 2004/01// VL - 45 IS - 1 M3 - Article SP - 49 SN - 00323861 AB - The structures of membranes of PBZO and PBZT extruded with counter rotating dies (CRD) were studied by wide angle X-ray diffraction (WAXD), small angle X-ray scattering (SAXS), atomic force, scanning electron and transmission electron microscopy (AFM, SEM, and TEM). The structure of CRD-extruded PBZO was compared with that of a solution-cast membrane. The extruded membranes have sheet structures typical of rigid-rod polymers. The heterocyclic rings of the extruded membranes are oriented approximately parallel to the membrane surface, while those of the cast membrane are oriented perpendicular to the surface. The parallel orientation of the rings of the extruded membranes may be due to the normal force exerted during extrusion. The polymer molecules near the surfaces of the extruded membranes are oriented along the shear directions of the extruder, while those in the middle are oriented randomly. There is little cholesteric nature. These materials have potential as microporous PEMs holding ion conducting polymers (ICPs). [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - X-ray diffraction KW - X-ray scattering KW - TRANSMISSION electron microscopy KW - HETEROCYCLIC compounds KW - POLYMERS KW - PBZO KW - PBZT KW - PEMs N1 - Accession Number: 11606304; Park, Soo-Young 1 Koerner, Hilmar 2 Putthanarat, S. 3 Ozisik, Rahmi 4 Juhl, Shane 5 Farmer, B.L. 5 Eby, R.K. 3; Email Address: reby@uakron.edu; Affiliation: 1: Department of Polymer Science, Kyungpook National University, Daegu 702-701, South Korea 2: Nonmetallic Materials Division, University of Dayton Research Institute, 300 College Park Ave, Dayton, OH 45469-0168, USA 3: Department and Institute of Polymer Science, The University of Akron, 170 University Avenue, Akron, OH 44325-3909, USA 4: Department of Materials Science and Engineering, MRC 205, Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA 5: Air Force Research Laboratory, AFRL/MLBP, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Jan2004, Vol. 45 Issue 1, p49; Subject Term: X-ray diffraction; Subject Term: X-ray scattering; Subject Term: TRANSMISSION electron microscopy; Subject Term: HETEROCYCLIC compounds; Subject Term: POLYMERS; Author-Supplied Keyword: PBZO; Author-Supplied Keyword: PBZT; Author-Supplied Keyword: PEMs; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.polymer.2003.10.033 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11606304&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yang, B. AU - Mignolet, M.P. AU - Spottswood, S.M. T1 - Modeling of damage accumulation for Duffing-type systems under severe random excitations JO - Probabilistic Engineering Mechanics JF - Probabilistic Engineering Mechanics Y1 - 2004/01// VL - 19 IS - 1/2 M3 - Article SP - 185 SN - 02668920 AB - The focus of this investigation is on the prediction of the fatigue life of aircraft panels subjected to thermal effects and a severe random acoustic excitation. The prototypical equations for this problem, i.e. the single and double well Duffing oscillators subjected to a bandlimited white noise, are first considered. A review of some currently available approaches, i.e. the Rayleigh approximation and the single spectral moment method both with and without Gaussianity correction, strongly suggests that an accurate prediction of the fatigue life for this non-linear system requires a dedicated model. To this end, an approximation of the probability density function of the peaks of the stationary response of the Duffing oscillators is derived. This model is then used in conjunction with either a narrowband assumption or the single spectral moment methodology to yield a prediction of the fatigue life. The application of this approach to simulation data from both single and double well Duffing oscillators, as well as on the experimental response of an unbuckled panel, demonstrates the reliability of this novel approximation. [Copyright &y& Elsevier] AB - Copyright of Probabilistic Engineering Mechanics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE KW - HEARING KW - METHODOLOGY KW - OSCILLATIONS KW - Aircraft panels KW - Buckled panels KW - Duffing equations KW - Fatigue life KW - Peaks distribution N1 - Accession Number: 12235620; Yang, B. 1 Mignolet, M.P. 1; Email Address: marc.mignolet@asu.edu Spottswood, S.M. 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, Arizona State University, Tempe, AZ 85287-6160, USA 2: Air Force Research Laboratory, Air Vehicles Directorate, Wright-Patterson, OH, USA; Source Info: Jan2004, Vol. 19 Issue 1/2, p185; Subject Term: FATIGUE; Subject Term: HEARING; Subject Term: METHODOLOGY; Subject Term: OSCILLATIONS; Author-Supplied Keyword: Aircraft panels; Author-Supplied Keyword: Buckled panels; Author-Supplied Keyword: Duffing equations; Author-Supplied Keyword: Fatigue life; Author-Supplied Keyword: Peaks distribution; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.probengmech.2003.11.015 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12235620&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Look, D.C. AU - Coşkun, C. AU - Claflin, B. AU - Farlow, G.C. T1 - Electrical and optical properties of defects and impurities in ZnO JO - Physica B JF - Physica B Y1 - 2003/12/31/ VL - 340-342 M3 - Article SP - 32 SN - 09214526 AB - Advancements in ZnO device applications have fostered much interest in the electrical and optical activities of various defects and impurities in the material. Although it has long been known that Group III dopants, such as Al, make efficient donors, the roles of other impurities, such as H and N, are only recently being elucidated. The same is true of the simplest point defects, such as Zn and O vacancies and interstitials. Theoretical work has been essential in identifying and understanding various defects and impurities. For example, theory has shown that H is always a donor (not amphoteric), that the O vacancy is a deep donor, not shallow, and that the Zn interstitial is a shallow donor, in agreement with electron-irradiation (EI) experiments. Recent irradiation studies show that significant defect annihilations take place, even at low temperatures, thus showing why ZnO is so resistant to radiation effects. To develop applications involving electroluminescence, it will be necessary to identify a reliable acceptor dopant, and N, P, and As have been most thoroughly investigated so far. In fact, p-type samples with resistivities <1 Ω-cm have been demonstrated, but certain questions remain unanswered. [Copyright &y& Elsevier] AB - Copyright of Physica B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide KW - OPTICAL properties KW - CRYSTAL defects KW - ELECTROLUMINESCENCE N1 - Accession Number: 11786353; Look, D.C. 1,2,3; Email Address: david.look@wpafb.af.mil Coşkun, C. 3 Claflin, B. 1,2 Farlow, G.C. 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA 2: Semiconductor Research Center, Wright State University, Dayton, OH 45435, USA 3: Physics Department, Wright State University, Dayton, OH 45435, USA; Source Info: 12/31/2003, Vol. 340-342, p32; Subject Term: ZINC oxide; Subject Term: OPTICAL properties; Subject Term: CRYSTAL defects; Subject Term: ELECTROLUMINESCENCE; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.physb.2003.09.188 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11786353&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kalabukhova, E.N. AU - Lukin, S.N. AU - Savchenko, D.V. AU - Mitchel, W.C. T1 - Electrical and multifrequency EPR study of nonstoichiometric defects in 4H-SiC JO - Physica B JF - Physica B Y1 - 2003/12/31/ VL - 340-342 M3 - Article SP - 156 SN - 09214526 AB - Two paramagnetic intrinsic defects P and ND1 have been studied in both C-rich n-type 4H-SiC and undoped semi-insulating (s.i.) 4H-SiC in the dark and under illumination of the s.i. sample with light at 140 and 37 GHz in the temperature interval from 4.2 to 77 K. Photo EPR and Hall effect measurements indicate that P is a deep donor defect localized at EC−1.15 eV, while ND1 is shallow donor defect localized at EC−0.07 eV.Based on the observed 13C hyperfine structure, and the C-rich growth conditions, we identify the P center with the silicon vacancy, while ND1, which exhibited a strong central hyperfine interaction with one 13C atom, is attributed to the carbon antisite CSi. Considering that the defects have spin S=1/2, C3V symmetry of the EPR spectrum and appear to be donor-like defects, P is attributed to the silicon vacancy in the −3 charge state (VSi3−), whereas ND1 is suggested to be the carbon antisite in the single negative charge state (CSi−). [Copyright &y& Elsevier] AB - Copyright of Physica B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARAMAGNETISM KW - HALL effect KW - SEMICONDUCTOR doping KW - INSULATING materials KW - EPR KW - Hall effect KW - Intrinsic defects KW - Semi-insulating SiC N1 - Accession Number: 11786376; Kalabukhova, E.N. 1; Email Address: katia@i.kiev.ua Lukin, S.N. 1 Savchenko, D.V. 1 Mitchel, W.C. 2; Affiliation: 1: Institute of Semiconductor Physics, NASU, PR. Nauki 45, 03028 Kiev, Ukraine 2: Air Force Research Laboratory, AFRL/MLPS, W-PAFB, OH 45433-7707, USA; Source Info: 12/31/2003, Vol. 340-342, p156; Subject Term: PARAMAGNETISM; Subject Term: HALL effect; Subject Term: SEMICONDUCTOR doping; Subject Term: INSULATING materials; Author-Supplied Keyword: EPR; Author-Supplied Keyword: Hall effect; Author-Supplied Keyword: Intrinsic defects; Author-Supplied Keyword: Semi-insulating SiC; NAICS/Industry Codes: 326290 Other rubber product manufacturing; NAICS/Industry Codes: 238310 Drywall and Insulation Contractors; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.physb.2003.09.047 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11786376&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bewley, W.W. AU - Kim, C.S. AU - Kim, M. AU - Canedy, C.L. AU - Lindle, J.R. AU - Vurgaftman, I. AU - Meyer, J.R. AU - Muller, R.E. AU - Echternach, P.M. AU - Kaspi, R. T1 - Broad-stripe midinfrared photonic-crystal distributed-feedback lasers with laser-ablation confinement. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2003/12/29/ VL - 83 IS - 26 M3 - Article SP - 5383 EP - 5385 PB - American Institute of Physics SN - 00036951 AB - We investigate broad-stripe photonic-crystal distributed-feedback lasers emitting at λ=4.4 μm. The beam quality improves dramatically when a laser ablation technique is used to eliminate parasitic Fabry–Pérot-like modes, by inducing loss in the regions adjoining the pump stripe. Even though the peak of the gain spectrum never fully aligns with the grating resonance, for pulsed pumping the output beam is essentially diffraction limited up to a stripe width of 150 μm, and remains no worse than six times the diffraction limit for stripes as broad as 400 μm. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASER beams KW - LASERS KW - LASER ablation KW - PHYSICS KW - DYNAMICS KW - PHYSICAL sciences N1 - Accession Number: 11753298; Bewley, W.W. 1 Kim, C.S. 1 Kim, M. 1 Canedy, C.L. 1 Lindle, J.R. 1 Vurgaftman, I. 1; Email Address: vurgaftman@nrl.navy.mil Meyer, J.R. 1 Muller, R.E. 2 Echternach, P.M. 2 Kaspi, R. 3; Affiliation: 1: Naval Research Laboratory 2: Jet Propulsion Laboratory, California Institute of Technology 3: Air Force Research Laboratory, Kirtland Air Force Base; Source Info: 12/29/2003, Vol. 83 Issue 26, p5383; Subject Term: LASER beams; Subject Term: LASERS; Subject Term: LASER ablation; Subject Term: PHYSICS; Subject Term: DYNAMICS; Subject Term: PHYSICAL sciences; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); Number of Pages: 3p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.1637153 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11753298&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rogers AU - J. E. AU - Nguyen AU - K. A. AU - Hufnagle AU - D. C. AU - McLean AU - D. G. AU - Su AU - W. AU - Gossett AU - K. M. AU - Burke AU - A. R. AU - Vinogradov AU - S. A. AU - Pachter AU - R. AU - Fleitz AU - P. A. T1 - Observation and Interpretation of Annulated Porphyrins: Studies on the Photophysical Properties of meso-Tetraphenylmetalloporphyrins. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2003/12/22/ VL - 107 IS - 51 M3 - Article SP - 11331 EP - 11339 SN - 10895639 AB - We present results of a joint computational and experimental study for a series of annulated metalloporphyrins in order to establish structure-property relationships. Specifically, we have examined the effects of substitution by meso-tetraphenylation, tetrabenzo and tetranaphtho annulation, and effects of changing the central metal from zinc (Zn) to palladium (Pd). Utilizing absorption and emission spectroscopy and laser flash photolysis techniques, the photophysical properties of these porphyrins have been determined. Upon the addition of benzo or naphtho groups, we observed an overall red shift in the ground state absorption spectra of both the B-bands and the Q-bands with increased conjugation and an increase in the Q-band to B-band intensity ratios. Time-dependent density functional theory calculations were performed on both series of porphyrins to identify the effects of phenyl, benzo, and naphtho substituents on the spectra. The benzo and naphtho adducts provide a larger contribution (typically 40-90%) to the observed red shifts due to increased π-conjugation, while there is a smaller contribution (typically 0-25%) from distortion of the porphyrin. Similarly, a red shift for the T1-Tn absorption spectrum and an overall general broadening in the spectrum were found with increased conjugation. An increase in the triplet molar extinction coefficient through the near-infrared region with annulation was also found. Varying the metal has an effect on the overall absorption spectra; i.e., the ground state spectra of the Zn porphyrins are red-shifted relative to the Pd porphyrins. For the triplet excited state spectra there were small effects in the spectra by changing the metal with a significant contribution to the kinetic properties by the heavy atom effect of the Pd. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PORPHYRINS KW - DENSITY functionals KW - BIOCONJUGATES KW - SPECTRUM analysis N1 - Accession Number: 11853200; Rogers J. E. 1 Nguyen K. A. 1 Hufnagle D. C. 1 McLean D. G. 1 Su W. 1 Gossett K. M. 1 Burke A. R. 1 Vinogradov S. A. 1 Pachter R. 1 Fleitz P. A. 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, MLPJ, 3005 Hobson Way Bldg 651, Wright Patterson Air Force Base, Ohio 45433; UES, Inc., Dayton, Ohio 45432; Anteon Corporation, Dayton, Ohio 45431; Science Applications International Corporation, Dayton, Ohio 45434; and Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104; Source Info: Dec2003, Vol. 107 Issue 51, p11331; Subject Term: PORPHYRINS; Subject Term: DENSITY functionals; Subject Term: BIOCONJUGATES; Subject Term: SPECTRUM analysis; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11853200&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kahler, S.W. T1 - Energetic particle acceleration by coronal mass ejections JO - Advances in Space Research JF - Advances in Space Research Y1 - 2003/12/15/ VL - 32 IS - 12 M3 - Article SP - 2587 SN - 02731177 AB - The current paradigm for the source of large, gradual solar energetic particle (SEP) events is that they are accelerated in coronal/interplanetary shocks driven by coronal mass ejections (CMEs). Early studies established that there is a rough correlation between the logs of the CME speed and the logs of the SEP intensities. Here I review two topics challenging the basic paradigm, the recent discovery that CMEs are also associated with impulsive, high-Z rich SEP events and the search for gradual SEP sources other than CME-driven shocks. I then discuss three topics of recent interest dealing with the relationship between the shock or CME properties and the resulting SEP events. These are the roles that CME accelerations, interactions between fast and preceding slow CMEs, and widths of fast CMEs may play in SEP production. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORONAL mass ejections KW - PARTICLE acceleration KW - SOLAR energy N1 - Accession Number: 12244456; Kahler, S.W. 1; Email Address: stephen.kahler@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA 01751-3010, USA; Source Info: Dec2003, Vol. 32 Issue 12, p2587; Subject Term: CORONAL mass ejections; Subject Term: PARTICLE acceleration; Subject Term: SOLAR energy; NAICS/Industry Codes: 221114 Solar Electric Power Generation; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12244456&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Daibog, E.I. AU - Logachev, Yu.I. AU - Kahler, S. AU - Kecskeméty, K. T1 - Statistical properties of sep event flux declines JO - Advances in Space Research JF - Advances in Space Research Y1 - 2003/12/15/ VL - 32 IS - 12 M3 - Article SP - 2655 SN - 02731177 AB - The interplanetary space is not a passive medium, which merely constitutes a scene for the propagation of previously accelerated energetic particles, but influences the distribution of particles by changing their energies as well due to interactions with magnetic field inhomogeneities. Such processes manifest themselves in the energy spectra of solar energetic particle (SEP) events. In this paper the fluxes of protons with energies of 4–60 MeV are investigated on the basis of two data sets. Both sets are homogeneous, obtained by the CPME instrument aboard the IMP 8 satellite between 1974 and 2001. The first includes all SEP events where the integral fluxes of >4 MeV protons exceeded 2 particle/cm2 s sr. The other set consists of fluxes recorded in differential energy windows between 0.5 and 48 MeV. Important characteristics of SEP events include the rates of decrease of particle flux, which, as well as peak flux time, is an integral feature of the interplanetary medium within a considerable region, surrounding the observation point. The time intervals selected cover the decay phases of SEP events following flares, CMEs and interplanetary shocks of different origin. Only those parts of declines were selected, that could reasonably be described by exponential dependence, irrespective of the gradual/impulsive character of the events. It is shown that the average values of characteristic decay time, τ, and energy spectral index, γ, are all changing with the solar activity phase. Distributions of τ and γ values are obtained in SEPs with and without shocks and during different phases of events: just after peak flux and late after maximum. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC flux KW - PARTICLE acceleration KW - CORONAL mass ejections KW - MAGNETIC fields N1 - Accession Number: 12244467; Daibog, E.I. 1 Logachev, Yu.I. 1 Kahler, S. 2 Kecskeméty, K. 3; Email Address: kecske@rmki.kfki.hu; Affiliation: 1: Skobeltsyn Institute of Nuclear Physics Moscow State University, 119992 Moscow, Russia 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA 01731, USA 3: KFKI Research Institute for Particle and Nuclear Physics, H-1525 Budapest, POB 49, Hungary; Source Info: Dec2003, Vol. 32 Issue 12, p2655; Subject Term: MAGNETIC flux; Subject Term: PARTICLE acceleration; Subject Term: CORONAL mass ejections; Subject Term: MAGNETIC fields; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12244467&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Daibog, E.I. AU - Logachev, Yu.I. AU - Kahler, S. AU - Kecskeméty, K. AU - McKenna-Lawlor, S. T1 - Periods of quasi-stationary conditions in interplanetary space according to sequences of SEP events JO - Advances in Space Research JF - Advances in Space Research Y1 - 2003/12/15/ VL - 32 IS - 12 M3 - Article SP - 2661 SN - 02731177 AB - The values of the characteristic decay time of particle fluxes in SEP events vary, as a rule, considerably from event to event. We point out, however, that at times sequences of events having similar decay times were observed over long time intervals (up to one month, and even longer in a few cases). The values of the decay times, however, differed among different sequences. The constancy of the decay phase in each consecutive event of these series suggests that the interplanetary medium was in steady state during the event series, and, because of solar rotation, its uniformity within sectors extended to 90–180° in heliolongitude. The very rarely observed long series (up to 2–3 solar rotations) indicate the steadiness and homogeneity of the plasma and the interplanetary magnetic field (IMF) in the entire inner solar system in the course of this time span. It is pointed out that the neutral current sheet of the IMF does not represent a substantial obstacle for energetic charged particles. Both hemispheres are (above and below the current sheet), at least during the series of solar events, invariant with time, uniform and alike from the viewpoint of the propagation of charged particles. The investigation of such sequences of events can also be useful for forecasting characteristics of SEP events. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC flux KW - SOLAR wind KW - MAGNETIC fields KW - SOLAR system N1 - Accession Number: 12244468; Daibog, E.I. 1 Logachev, Yu.I. 1 Kahler, S. 2 Kecskeméty, K. 3; Email Address: kecske@rmki.kfki.hu McKenna-Lawlor, S. 4; Affiliation: 1: Skobeltsyn Institute of Nuclear Physics Moscow State University, 119992 Moscow, Russia 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA 01731, USA 3: KFKI Research Institute for Particle and Nuclear Physics, H-1525 Budapest, POB 49, Hungary 4: Space Technology Ireland National University of Ireland, Maynooth, Co. Kildare, Ireland; Source Info: Dec2003, Vol. 32 Issue 12, p2661; Subject Term: MAGNETIC flux; Subject Term: SOLAR wind; Subject Term: MAGNETIC fields; Subject Term: SOLAR system; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12244468&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fahmi, M. M. E. AU - Khan, Arif AU - Griffin, J. A. AU - Harris, G. L. AU - Robins, Lawrence H. AU - Birdwell, A. G. AU - Youn-Seon Kang, A. G. AU - Smith, David J. AU - Steiner, Todd AU - Mohammad, S. Noor T1 - Nitrogen-activated bowing of dilute In[sub y]Ga[sub 1-y]As[sub 1-x]N[sub x] based on photoreflectance studies. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2003/12/15/ VL - 94 IS - 12 M3 - Article SP - 7576 EP - 7580 PB - American Institute of Physics SN - 00218979 AB - The dependence of the fundamental band gap and higher-lying critical-point energies of dilute-nitrogen Ga[sub 1-y]In[sub y]As[sub 1-x]N[sub x] epilayers on nitrogen mole fraction (x), for x<=0.0125, and temperature, from 20 to 300 K, was investigated by photoreflectance spectroscopy. The band gap, E[sub G], was found to decrease with increasing x in a highly nonlinear manner. The bowing parameter (the second-order parameter b in a quadratic expression for the dependence of E[sub G] on x) was found to become less negative with increasing x; the value of b changed from -50 eV, at very low nitrogen fraction, to -20 eV, at x>0.01. These results strongly suggest that nitrogen-related impurity levels arise within the band gap of dilute-nitrogen Ga[sub 1-y]In[sub y]As[sub 1-x]N[sub x] alloys. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRUM analysis KW - NITROGEN KW - ALLOYS KW - METALS -- Analysis N1 - Accession Number: 11567851; Fahmi, M. M. E. 1 Khan, Arif 1 Griffin, J. A. 1 Harris, G. L. 1 Robins, Lawrence H. 2 Birdwell, A. G. 2 Youn-Seon Kang, A. G. 2 Smith, David J. 3 Steiner, Todd 4 Mohammad, S. Noor 5; Email Address: snmohammad2002@yahoo.com; Affiliation: 1: Materials Science Research Center of Excellence, 2300 Sixth Street NW, Washington, DC 20059 2: National Institute of Standard and Technology, 100 Bureau Drive, Stop 8522 Gaithersburg, Maryland 20899-8522 3: Deaprtment of Physics and Astrophysics, Arizona State University, Tempe, Arizona 85287 4: Air Force Research Laboratory, Air Force Office of Scientific Research, 801 North Randolph, Street, Arlington, Virginia 22203-1977 5: Department of Electrical Engineering, Howard University, Washington, DC 20059; Source Info: 12/15/2003, Vol. 94 Issue 12, p7576; Subject Term: SPECTRUM analysis; Subject Term: NITROGEN; Subject Term: ALLOYS; Subject Term: METALS -- Analysis; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 5p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.1630191 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11567851&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McQuiston, Jennifer H. AU - McCall, Candace L. AU - Nicholson, William L. T1 - Ehrlichiosis and related infections. JO - Journal of the American Veterinary Medical Association JF - Journal of the American Veterinary Medical Association Y1 - 2003/12/15/ VL - 223 IS - 12 M3 - Article SP - 1750 EP - 1756 SN - 00031488 AB - Discusses pathogens, specifically Anaplasma phagocytophilum, that may infect both humans and animals in the United States. Zoonotic importance; Classification of Ehrlichia and Anaplasma species in the family Anaplasmataceae; Difficulty of clinical diagnosis of ehrlichiosis in humans and animals. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Veterinary Medical Association is the property of American Veterinary Medical Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANAPLASMA KW - EHRLICHIOSIS KW - ZOONOSES KW - ANIMALS as carriers of disease KW - UNITED States N1 - Accession Number: 11897614; McQuiston, Jennifer H. 1 McCall, Candace L. 1 Nicholson, William L. 1; Affiliation: 1: Centers for Disease Control and Prevention, National Center for Infectious Diseases, Division of Viral and Rickettsial Diseases, Viral and Ricketssial Zoonoses Branch, Atlanta and the United States Air Force, Biomedical Sciences Corps, Department of Defense, MD; Source Info: 12/15/2003, Vol. 223 Issue 12, p1750; Subject Term: ANAPLASMA; Subject Term: EHRLICHIOSIS; Subject Term: ZOONOSES; Subject Term: ANIMALS as carriers of disease; Subject Term: UNITED States; Number of Pages: 7p; Illustrations: 3 Diagrams, 1 Chart, 1 Graph, 2 Maps; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11897614&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Poggie, J. AU - Smits, A.J. T1 - Large-Scale Structures in a Compressible Mixing Layer over a Cavity. JO - AIAA Journal JF - AIAA Journal Y1 - 2003/12// VL - 41 IS - 12 M3 - Article SP - 2410 EP - 2419 SN - 00011452 AB - An experimental study was made of a flow in which a turbulent boundary layer separates at a backward-facing step, forms a free shear layer over a cavity, and reattaches on a ramp downstream. Accurate characterization of the mixing layer turbulence is important given the strong link between large-scale organized structures and intense unsteadiness at reattachment found in our previous study of this flow (Poggie, J., and Smits, A. J., "Shock Unsteadiness in a Reattaching Shear Layer," Journal of Fluid Mechanics, Vol. 429, 2001, pp. 155-185). To this end, detailed flow visualization experiments were carried out in the self-similar portion of the turbulent mixing layer at a nominal convective Mach number of 1.1. The flow visualization technique was based on Rayleigh scattering from nanometer-scale contaminant particles present in the freestream flow. The interface marked by the vaporization of the particles revealed the large-scale organized turbulence structures in the mixing layer. Quantitative measures of the length scale, orientation, and speed of organized structures were derived from the flow visualization data, and were found to agree well with conventional point-probe measurements. As has been found in other studies of planar mixing layers, the measured convection velocity varied moderately along the transverse direction, and the corresponding convective Mach number differed from the prediction of the isentropic model. The present results, along with previously published probe surveys, demonstrate that the flow over the cavity is essentially equivalent to a standard planar mixing layer flow, and thus forms a well-characterized initial condition for the reattachment flow downstream. In combination with our previous study, the present results add insight into cavity flow unsteadiness for the case where the driving mechanism is related to broad-band turbulent fluctuations, rather than discrete acoustic resonances. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BOUNDARY layer (Aerodynamics) KW - TURBULENCE KW - SHEAR (Mechanics) KW - FLOW visualization KW - FLUID dynamics KW - SUPERSONIC aerodynamics N1 - Accession Number: 12042522; Poggie, J. 1 Smits, A.J. 2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 2: Princeton University, Princeton, New Jersey; Source Info: Dec2003, Vol. 41 Issue 12, p2410; Subject Term: BOUNDARY layer (Aerodynamics); Subject Term: TURBULENCE; Subject Term: SHEAR (Mechanics); Subject Term: FLOW visualization; Subject Term: FLUID dynamics; Subject Term: SUPERSONIC aerodynamics; Number of Pages: 10p; Illustrations: 14 Black and White Photographs, 4 Diagrams, 1 Chart, 16 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12042522&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Spencer, T.A. T1 - Current HPM Source Research. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2003/12// VL - 691 IS - 1 M3 - Article SP - 46 EP - 46 PB - American Institute of Physics SN - 0094243X AB - Advanced research continues in the field of High Power Microwaves (HPM), which have potential applications ranging from long distance communications, radar, environmental waste clean up, bio-toxin neutralization, fusion heating, as well as a host of others. Current HPM sources being studied are the Magnetically Insulated Line Oscillator, Relativistic Klystron Oscillator, and Relativistic Magnetron, and experimental and computational comparisons will be presented. Relevant components to be discussed are recent cathode results, recent antenna results, as well as the discussion of a HPM air breakdown experiment to be conducted in the near future. © 2003 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROWAVES KW - KLYSTRONS KW - MAGNETRONS N1 - Accession Number: 11547668; Spencer, T.A. 1; Email Address: Thomas.Spencer@kirtland.af.mil; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, NM; Source Info: 2003, Vol. 691 Issue 1, p46; Subject Term: MICROWAVES; Subject Term: KLYSTRONS; Subject Term: MAGNETRONS; Number of Pages: 1p; Document Type: Article L3 - 10.1063/1.1635100 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11547668&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wilson, Glenn F. AU - Russell, Christopher A. T1 - Real-time assessment of mental workload using psychophysiological measures and artificial neural networks. JO - Human Factors JF - Human Factors Y1 - 2003///Winter2003 VL - 45 IS - 4 M3 - journal article SP - 635 EP - 643 SN - 00187208 AB - The functional state of the human operator is critical to optimal system performance. Degraded states of operator functioning can lead to errors and overall suboptimal system performance. Accurate assessment of operator functional state is crucial to the successful implementation of an adaptive aiding system. One method of determining operators' functional state is by monitoring their physiology. In the present study, artificial neural networks using physiological signals were used to continuously monitor, in real time, the functional state of 7 participants while they performed the Multi-Attribute Task Battery with two levels of task difficulty. Six channels of brain electrical activity and eye, heart and respiration measures were evaluated on line. The accuracy of the classifier was determined to test its utility as an on-line measure of operator state. The mean classification accuracies were 85%, 82%, and 86% for the baseline, low task difficulty, and high task difficulty conditions, respectively. The high levels of accuracy suggest that these procedures can be used to provide accurate estimates of operator functional state that can be used to provide adaptive aiding. The relative contribution of each of the 43 psychophysiological features was also determined. Actual or potential applications of this research include test and evaluation and adaptive aiding implementation. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEURAL computers KW - HUMAN-computer interaction KW - ERGONOMICS KW - PSYCHOPHYSIOLOGY KW - HUMAN-machine systems KW - PHYSIOLOGY N1 - Accession Number: 12667343; Wilson, Glenn F. 1; Email Address: glenn.wilson@wpafb.af.mil Russell, Christopher A. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base; Source Info: Winter2003, Vol. 45 Issue 4, p635; Subject Term: NEURAL computers; Subject Term: HUMAN-computer interaction; Subject Term: ERGONOMICS; Subject Term: PSYCHOPHYSIOLOGY; Subject Term: HUMAN-machine systems; Subject Term: PHYSIOLOGY; Number of Pages: 9p; Illustrations: 7 Charts; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12667343&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Manke II., Gerald C. AU - Hewett, Kevin B. AU - Wisniewski, Charles F. AU - Truman, C. Randall AU - Hager, Gordon D. T1 - On the Presence of Rotational Nonequilibrium in a Supersonic Hydrogen Fluoride Laser. JO - IEEE Journal of Quantum Electronics JF - IEEE Journal of Quantum Electronics Y1 - 2003/12// VL - 39 IS - 12 M3 - Article SP - 1625 EP - 1634 SN - 00189197 AB - Overtone small-signal gain data measured while operating a small-scale hydrogen-fluoride (HF) laser saturated on the fundamental transitions are compared with fundamental lasing output spectra and spontaneous overtone emission spectra measured orthogonal to the lasing axis. In all cases, the data are consistent with an equilibrium rotational distribution. These results are discussed in terms of their applicability to the question of rotational nonequilibrium in continuous wave HF lasers. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Journal of Quantum Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL lasers KW - HYDROGEN fluoride KW - LASERS KW - EQUILIBRIUM KW - HALIDES KW - SPECTRUM analysis KW - Chemical laser KW - HF laser KW - HF overtone laser KW - rotational equilibrium. N1 - Accession Number: 12101784; Manke II., Gerald C. 1 Hewett, Kevin B. 1 Wisniewski, Charles F. 1 Truman, C. Randall 1 Hager, Gordon D. 2; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, NM 87117 USA. 2: Department of Mechanical Engineering, University of New Mexico, Albuquerque, NM 87131 USA.; Source Info: Dec2003, Vol. 39 Issue 12, p1625; Subject Term: CHEMICAL lasers; Subject Term: HYDROGEN fluoride; Subject Term: LASERS; Subject Term: EQUILIBRIUM; Subject Term: HALIDES; Subject Term: SPECTRUM analysis; Author-Supplied Keyword: Chemical laser; Author-Supplied Keyword: HF laser; Author-Supplied Keyword: HF overtone laser; Author-Supplied Keyword: rotational equilibrium.; Number of Pages: 10p; Document Type: Article L3 - 10.1109/JQE.2003.819556 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12101784&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maimon, Jonathan D. AU - Hunt, Kenneth K. AU - Burcin, Laura AU - Rodgers, John T1 - Chalcogenide Memory Arrays: Characterization and Radiation Effects. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2003/12//Dec2003 Part 1 of 2 VL - 50 IS - 6 M3 - Article SP - 1878 EP - 1984 SN - 00189499 AB - The chalcogenide material used for phase-change applications in rewritable optical storage (Ge&sub2; Sb&sub2;5) has been integrated with a 0.5-μm radiation-hardened CMOS process to produce 64-Kbit memory arrays. On selected arrays, electrical testing demonstrated up to 100% memory cell yield, 100-ns programming and read speeds, and write currents as low as 1 mA/bit. Devices functioned normally from -55°C to 125°C. Write/read endurance has been demonstrated to 1 × 108 before first bit failure. Total ionizing dose (TID) testing to 2 Mrad(Si) showed no degradation of chalcogenide memory element, but it identified a write current generator circuit degradation specific to the test chip, which can be easily corrected in the next generation of array and product. Static single-event effects (SEE) testing showed no effect to an effective linear energy transfer (LETEFF) of 98 MeV/rng/cm². Dynamic SEE testing showed no latchup or single-event gate rupture (SEGR) to, an LETEFF of 123 MeV/mg/cm&sub2;. Two sensitive circuits, neither containing chalcogenide elements, and both with small error cross sections, were identified. The sense amp appears sensitive to transients when reading the high-resistance state. The write driver circuit may be falsely activated during a read cycle, resulting in a reprogrammed bit. Radiation results show no degradation to the hardened CMOS or effects. that can be attributed to the phase-change material. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OPTICAL disk drives KW - CHALCOGENIDES KW - COMPLEMENTARY metal oxide semiconductors KW - RADIATION KW - INTEGRATED circuits KW - LINEAR energy transfer KW - Chalcogenide KW - memory KW - nonvolatile KW - phase change KW - single event KW - total dose. N1 - Accession Number: 12517422; Maimon, Jonathan D. 1; Email Address: jmaimon@ovonyx.com Hunt, Kenneth K. 2; Email Address: ken.hunt@kirtland.af.mil Burcin, Laura 3; Email Address: laura.burcin@baesystems.com Rodgers, John 3; Email Address: john.rodgers@baesystems.com; Affiliation: 1: Ovonyx, Inc., Manassas, VA 20110 USA. 2: Space Vehicles Directorate of the Air Force Research Laboratory, Kirtiand AFB, NM, 87I17 USA. 3: BAE Systems, Manassas, VA 20110 USA.; Source Info: Dec2003 Part 1 of 2, Vol. 50 Issue 6, p1878; Subject Term: OPTICAL disk drives; Subject Term: CHALCOGENIDES; Subject Term: COMPLEMENTARY metal oxide semiconductors; Subject Term: RADIATION; Subject Term: INTEGRATED circuits; Subject Term: LINEAR energy transfer; Author-Supplied Keyword: Chalcogenide; Author-Supplied Keyword: memory; Author-Supplied Keyword: nonvolatile; Author-Supplied Keyword: phase change; Author-Supplied Keyword: single event; Author-Supplied Keyword: total dose.; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 334112 Computer Storage Device Manufacturing; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TNS.2003.821377 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12517422&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hjalmarson, Harold P. AU - Pease, Ronald L. AU - Witczak, Steven C. AU - Shaneyfelt, Marty R. AU - Schwank, James R. AU - Edwards, Arthur H. AU - Hembree, Charles E. AU - Mattsson, Thomas R. T1 - Mechanisms for Radiation. Dose-Rate Sensitivity of Bipolar Transistors. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2003/12//Dec2003 Part 1 of 2 VL - 50 IS - 6 M3 - Article SP - 1901 EP - 1909 SN - 00189499 AB - Mechanisms for enhanced low-dose-rate sensitivity are described. In these mechanisms, bimolecular reactions dominate the kinetics at high dose rates thereby causing a sub-linear dependence on total dose, and this leads. to a dose-rate dependence. These bimolecular mechanisms include electron-hole. recombination, hydrogen recapture at hydrogen source sites, and hydrogen dimerization to form hydrogen molecules. The essence of each of these mechanisms is the dominance of the bimolecular reactions over the radiolysis reaction at high dose rates. However, at low dose rates, the radiolysis reaction dominates leading to a maximum effect of the radiation. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIPOLAR transistors KW - SEMICONDUCTOR junctions KW - SILICA KW - RADIATION KW - HYDROGEN KW - PROTONS KW - Bimolecular reaction KW - bipolar junction transistor KW - cracking KW - dimerization KW - dose rate KW - ELORS KW - excess base current KW - hole KW - hydrogen KW - interface trap KW - kinetics KW - proton KW - radiation KW - recombination KW - silicon dioxide. N1 - Accession Number: 12517426; Hjalmarson, Harold P. 1; Email Address: hphjalm@sandia.gov Pease, Ronald L. 2 Witczak, Steven C. 3; Email Address: steven.c.witczak@aero.org Shaneyfelt, Marty R. 4 Schwank, James R. 4 Edwards, Arthur H. 5 Hembree, Charles E. 6 Mattsson, Thomas R. 7; Affiliation: 1: Sandia National Laboratories, MS-0316, Albuquerque, NM 87185 USA. 2: RLP Research, Los Lunas NM 87031 USA. 3: Electronics Technology Center, Aerospace Corporation, El Segundo, CA 90245 USA. 4: Department 1762-1, Sandia National Laboratories, Albuquerque, NM 87185 USA. 5: Air Force Research Laboratory, Albuquerque, NM 87117 USA. 6: Department 1739, Sandia National Laboratories, Albuquerque, NM 87185 USA. 7: Department 1674, Sandia National Laboratories, Albuquerque, NM 87185 USA.; Source Info: Dec2003 Part 1 of 2, Vol. 50 Issue 6, p1901; Subject Term: BIPOLAR transistors; Subject Term: SEMICONDUCTOR junctions; Subject Term: SILICA; Subject Term: RADIATION; Subject Term: HYDROGEN; Subject Term: PROTONS; Author-Supplied Keyword: Bimolecular reaction; Author-Supplied Keyword: bipolar junction transistor; Author-Supplied Keyword: cracking; Author-Supplied Keyword: dimerization; Author-Supplied Keyword: dose rate; Author-Supplied Keyword: ELORS; Author-Supplied Keyword: excess base current; Author-Supplied Keyword: hole; Author-Supplied Keyword: hydrogen; Author-Supplied Keyword: interface trap; Author-Supplied Keyword: kinetics; Author-Supplied Keyword: proton; Author-Supplied Keyword: radiation; Author-Supplied Keyword: recombination; Author-Supplied Keyword: silicon dioxide.; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; NAICS/Industry Codes: 212322 Industrial Sand Mining; NAICS/Industry Codes: 212323 Sand and gravel mining and quarrying; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 9p; Document Type: Article L3 - 10.1109/TNS.2003.821803 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12517426&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Marshall, Paul W. AU - Hubbs, John E. AU - Arrington, Douglas C. AU - Marshall, Cheryl J. AU - Reed, Robert A. AU - Gee, George AU - Pickel, James C. AU - Ramos, Rodolfo A. T1 - Proton-lnduced Transients and Charge Collection Measurements in a LWIR HgCdTe Focal Plane.Array. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2003/12//Dec2003 Part 1 of 2 VL - 50 IS - 6 M3 - Article SP - 1968 EP - 1973 SN - 00189499 AB - We compare measurements and modeling of 27 and 63 MeV proton-induced transients in alarge-format HgCdTe long wavelength infrared (LWIR) focal plane assembly operating at 40 K. Charge collection measurements describe very limited diffusion of carriers to multiple pixels showing significantly reduced particle Induced cross-talk for the lateral diffusion structure. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATION KW - INFRARED detectors KW - PROTONS KW - COSMIC rays KW - SILICON KW - PROBABILITY theory KW - Infrared detectors KW - protons KW - radiation effects. N1 - Accession Number: 12517436; Marshall, Paul W. 1; Email Address: pwmarshall@aol.com Hubbs, John E. 2; Email Address: john.hubbs@kirtland.af.mil Arrington, Douglas C. 2; Email Address: doug.athngton@kirtland.af.mil Marshall, Cheryl J. 3; Email Address: cmarshall2@aol.com Reed, Robert A. 3; Email Address: Robert.Reed@nasa.gov Gee, George 4; Email Address: George.B.Gee.1@gsfc.nasa.gov Pickel, James C. 5; Email Address: jim@pickel.net Ramos, Rodolfo A. 6; Email Address: rodolfo.ramos@kirtland.af.mil; Affiliation: 1: Consultant, NASA Goddard Space Flight Center, Brookneal, VA 24528 USA. 2: Air Force Research Laboratory/Space Vehicles Directorate, Infrared Radiation Effects Laboratory, Ball Aerospace and Technologies Corporation, Albuquerque, NM 87185 USA. 3: NASA Goddard Space flight Center, Greenbelt, MD 20771 USA. 4: SGT, Inc., Greenbelt, MD 20771 USA. 5: PRT, Inc., Fallbrook, CA 92028 USA. 6: Air Force Research Laboratory/Space Vehicles Directorate, Infrared Radiation Effects Laboratory, Albuquerque, NM 87117 USA.; Source Info: Dec2003 Part 1 of 2, Vol. 50 Issue 6, p1968; Subject Term: RADIATION; Subject Term: INFRARED detectors; Subject Term: PROTONS; Subject Term: COSMIC rays; Subject Term: SILICON; Subject Term: PROBABILITY theory; Author-Supplied Keyword: Infrared detectors; Author-Supplied Keyword: protons; Author-Supplied Keyword: radiation effects.; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1109/TNS.2003.820749 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12517436&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dichter, Bronislaw K. AU - Woolf, Stanley T1 - Grazing Angle Proton Scattering: Effects on Chandra and XMM-Newton X-Ray Telescopes. JO - IEEE Transactions on Nuclear Science JF - IEEE Transactions on Nuclear Science Y1 - 2003/12//Dec2003 Part 1 of 2 VL - 50 IS - 6 M3 - Article SP - 2292 EP - 2295 SN - 00189499 AB - A proton scattering process resulted in damage to one of the Chandra X-ray telescope's focal plane detectors. In this process, incident protons were transmitted, by scattering off the telescope mirrors, to the focal plane. We identify the proton population responsible for the damage and, using a proper grazing angle formalism, we show, that the standard calculations of grazing angle scattering will significantly Under predict the expected proton flux at the focal plane. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHARGE coupled devices KW - RADIATION KW - X-ray telescopes KW - PROTONS -- Scattering KW - FOCAL planes KW - FORECASTING KW - Chandra X-ray telescope CCD radiation damage. N1 - Accession Number: 12517481; Dichter, Bronislaw K. 1 Woolf, Stanley 2; Email Address: stan@arcon.com; Affiliation: 1: Air Force Research Laboratory, Space Weather Center, Hanscom AFB, MA 01731 USA. 2: Arcon Corporation, Waltham, MA 02154, USA.; Source Info: Dec2003 Part 1 of 2, Vol. 50 Issue 6, p2292; Subject Term: CHARGE coupled devices; Subject Term: RADIATION; Subject Term: X-ray telescopes; Subject Term: PROTONS -- Scattering; Subject Term: FOCAL planes; Subject Term: FORECASTING; Author-Supplied Keyword: Chandra X-ray telescope CCD radiation damage.; Number of Pages: 4p; Document Type: Article L3 - 10.1109/TNS.2003.822092 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12517481&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lai, Shu T. T1 - A Critical Overview on Spacecraft Charging Mitigation Methods. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2003/12//Dec2003 Part 1 of 2 VL - 31 IS - 6 M3 - Article SP - 1118 EP - 1124 SN - 00933813 AB - Interactions between hazardous space plasmas and spacecraft surfaces often result in spacecraft charging. Spacecraft charging may disturb the scientific measurements onboard, affect communications, control, and operations of spacecraft, and may be harmful to the health of the electronics on the spacecraft. Several mitigation methods have been proposed or tested in recent years. This paper presents a critical overview on all of the mitigation methods known to date: 1) passive methods using sharp spikes and high secondary emission coefficient surface materials and 2) active methods using controlled emissions of electrons, ions, plasmas, neutral gas, and polar molecules. Paradoxically, emission of low-energy positive ions from a highly negatively charged spacecraft can reduce the charging level, because the ions tend to return and may generate secondary electrons which then escape. We discuss the advantages and disadvantages of each of the methods and illustrate the ideas by means of examples of results obtained on SCATHA and DSCS satellites. Finally, mitigation of deep dielectric charging is briefly discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE vehicles -- Electrostatic charging KW - SPACE plasmas KW - ELECTRON emission KW - ELECTRON beams KW - DIELECTRICS KW - COMMUNICATION KW - Dielectric charging KW - differential charging KW - discharging KW - electron beam KW - ion beam KW - mitigation KW - plasma emission KW - space plasma. KW - spacecraft charging N1 - Accession Number: 12374156; Lai, Shu T. 1; Email Address: Shu.Lai@hanscom.af.mil; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731 USA.; Source Info: Dec2003 Part 1 of 2, Vol. 31 Issue 6, p1118; Subject Term: SPACE vehicles -- Electrostatic charging; Subject Term: SPACE plasmas; Subject Term: ELECTRON emission; Subject Term: ELECTRON beams; Subject Term: DIELECTRICS; Subject Term: COMMUNICATION; Author-Supplied Keyword: Dielectric charging; Author-Supplied Keyword: differential charging; Author-Supplied Keyword: discharging; Author-Supplied Keyword: electron beam; Author-Supplied Keyword: ion beam; Author-Supplied Keyword: mitigation; Author-Supplied Keyword: plasma emission; Author-Supplied Keyword: space plasma.; Author-Supplied Keyword: spacecraft charging; Number of Pages: 7p; Document Type: Article L3 - 10.1109/TPS.2003.820969 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12374156&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Striebich, R.C. AU - Lawrence, J. T1 - Thermal decomposition of high-energy density materials at high pressure and temperature JO - Journal of Analytical & Applied Pyrolysis JF - Journal of Analytical & Applied Pyrolysis Y1 - 2003/12// VL - 70 IS - 2 M3 - Article SP - 339 SN - 01652370 AB - High-energy density materials (HEDMs) are being investigated for use as propellants in rocket, air-breathing, and combined-cycle applications. These types of materials may be attractive alternatives to conventional propellants because of their high heat of combustion, density, and high strain energy. Because advanced propulsion systems may operate at very high pressure and temperature (>25 atm and temperatures exceeding 500 °C), the thermal decomposition of individual HEDMs is of interest to future fuel system designers. A laboratory-scale flow reactor was used to subject small amounts (approximately 1 ml) of deoxygenated HEDM to controlled conditions of temperature and residence-time-at-temperature at constant pressure (34 atm) in the liquid or supercritical phase. The reactor was 316 stainless steel HPLC tubing. Using an in-line analytical system, as well as off-line chromatographic analysis of products, the thermal stability of the parent material, as well as the thermal fragmentation products of each HEDM was measured. Some of the candidate materials tested (dimethyl-2-azidoethylamine (DAMEZ), quadricyclane, and bicyclopropylidene (BCP)) showed only marginal thermal stability with major decomposition occurring before 400 °C (∼3 s residence time). Other candidate materials (JP-10, RP-1, RG-1, RJ-6, and RJ-7) showed excellent thermal stability: little decomposition even at 600 °C. Results show the pyrolytic stability of candidate materials relative to each other, and provided insights to the mechanisms of thermal decomposition for specific fuel candidates. [Copyright &y& Elsevier] AB - Copyright of Journal of Analytical & Applied Pyrolysis is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROPELLANTS KW - FUEL KW - DECOMPOSITION (Chemistry) KW - MATERIALS KW - Bicyclopropylidene KW - Fuels KW - Missiles KW - Quadricyclane KW - Rockets KW - RP-1 N1 - Accession Number: 11251374; Striebich, R.C. 1; Email Address: richs@snake.appl.wpafb.af.mil Lawrence, J. 2; Email Address: janine.lawrence@wpafb.af.mil; Affiliation: 1: University of Dayton Research Institute (UDRI), KL102, 300 College Park, Dayton, OH 45469-0132, USA 2: AFRL/PRTG, Propulsion and Power Directorate, Air Force Research Laboratory, 1790 Loop Road N., Wright-Patterson Air Force Base, OH 45433-7103, USA; Source Info: Dec2003, Vol. 70 Issue 2, p339; Subject Term: PROPELLANTS; Subject Term: FUEL; Subject Term: DECOMPOSITION (Chemistry); Subject Term: MATERIALS; Author-Supplied Keyword: Bicyclopropylidene; Author-Supplied Keyword: Fuels; Author-Supplied Keyword: Missiles; Author-Supplied Keyword: Quadricyclane; Author-Supplied Keyword: Rockets; Author-Supplied Keyword: RP-1; NAICS/Industry Codes: 454310 Fuel Dealers; NAICS/Industry Codes: 454319 Other fuel dealers; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 14p; Document Type: Article L3 - 10.1016/S0165-2370(02)00181-X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11251374&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lin Cheng AU - Stecki, Andrew J. AU - Scofield, James D. T1 - Effect of Trimethylsilane Flow Rate on the Growth of SiC Thin-Films for Fiber-Optic Temperature Sensors. JO - Journal of Microelectromechanical Systems JF - Journal of Microelectromechanical Systems Y1 - 2003/12// VL - 12 IS - 6 M3 - Article SP - 797 EP - 803 SN - 10577157 AB - Presents an investigation into the effect of trimethylsilane (3MS) flow rate on the growth of silicon carbide (SiC) thin-film on single-crystal sapphire substrate for fiber-optic temperature sensor. SiC film thickness in the range of 2-3 μm; Structural properties; Optical reflection from the SiC thin-film Fabry-Pérot interferometers; One-way phase shifts in resonant minima on all measured samples. KW - FLOWS (Differentiable dynamical systems) KW - SILICON carbide KW - THIN films KW - FIBER optics KW - SAPPHIRES KW - TEMPERATURE KW - DETECTORS N1 - Accession Number: 12314964; Lin Cheng 1 Stecki, Andrew J. 1; Email Address: a.steckl@uc.edu Scofield, James D. 2; Affiliation: 1: Nanoelectronics Laboratory, University of Cincinnati, OH, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA; Source Info: Dec2003, Vol. 12 Issue 6, p797; Subject Term: FLOWS (Differentiable dynamical systems); Subject Term: SILICON carbide; Subject Term: THIN films; Subject Term: FIBER optics; Subject Term: SAPPHIRES; Subject Term: TEMPERATURE; Subject Term: DETECTORS; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 7p; Illustrations: 13 Black and White Photographs, 1 Diagram, 7 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12314964&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Western, David J. T1 - The Shade of Swords: Jihad and the Conflict Between Islam & Christianity (Book). JO - Nationalism & Ethnic Politics JF - Nationalism & Ethnic Politics Y1 - 2003///Winter2003 VL - 9 IS - 4 M3 - Book Review SP - 163 EP - 165 SN - 13537113 AB - Reviews the book "The Shade of Swords: Jihad and the Conflict Between Islam & Christianity," by M. J. Akbar, KW - JIHAD KW - CHRISTIANITY & other religions -- Islam KW - NONFICTION KW - AKBAR, M. J. KW - SHADE of Swords: Jihad & the Conflict Between Islam & Christianity, The (Book) N1 - Accession Number: 13883911; Western, David J. 1; Affiliation: 1: United States Air Force Academy; Source Info: Winter2003, Vol. 9 Issue 4, p163; Subject Term: JIHAD; Subject Term: CHRISTIANITY & other religions -- Islam; Subject Term: NONFICTION; Reviews & Products: SHADE of Swords: Jihad & the Conflict Between Islam & Christianity, The (Book); People: AKBAR, M. J.; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13883911&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Repperger, D. W. AU - Gilkey, R. H. AU - Green, R. AU - Lafleur, T. AU - Haas, M. W. AU - T. Lafleur, M. W. AU - M. W. Haas T. Lafleur, M. W. AU - M. W. Haas, M. W. T1 - EFFECTS OF HAPTIC FEEDBACK AND TURBULENCE ON LANDING PERFORMANCE USING AN IMMERSIVE CAVE AUTOMATIC VIRTUAL ENVIRONMENT (CAVE). JO - Perceptual & Motor Skills JF - Perceptual & Motor Skills Y1 - 2003/12//Dec2003 Part 1 VL - 97 IS - 3 M3 - Article SP - 820 EP - 832 SN - 00315125 AB - An investigation was conducted in which subjects had to land a simulated F-16 aircraft using a CAVE (Cave Automatic Virtual Environment) facility. This was a three-dimensional virtual setting consisting of multiple mirrors, 3-D video-projected displays in a highly stressful environment employing a haptic joystick. 6 subjects learned a task which required landing in wind turbulence with a reduced visual scene. Analyses indicated that during landing, performance error variables which occurred in the same direction as the haptic forces were significantly reduced. This was true, especially when the visual scene was occluded and more reliance on the proprioceptive condition was beneficial. [ABSTRACT FROM AUTHOR] AB - Copyright of Perceptual & Motor Skills is the property of Ammons Scientific, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - F-16 (Jet fighter plane) KW - SYNTHETIC training devices KW - MILITARY jets KW - AVIATION psychology KW - MILITARY education KW - TURBULENCE N1 - Accession Number: 12101462; Repperger, D. W. 1 Gilkey, R. H. 2 Green, R. 2 Lafleur, T. 1 Haas, M. W. 1 T. Lafleur, M. W. M. W. Haas T. Lafleur, M. W. M. W. Haas, M. W.; Affiliation: 1: Air Force Research Laboratory Wright-Patterson AFB, Ohio. 2: Department of Psychology Wright State University.; Source Info: Dec2003 Part 1, Vol. 97 Issue 3, p820; Subject Term: F-16 (Jet fighter plane); Subject Term: SYNTHETIC training devices; Subject Term: MILITARY jets; Subject Term: AVIATION psychology; Subject Term: MILITARY education; Subject Term: TURBULENCE; NAICS/Industry Codes: 611110 Elementary and Secondary Schools; NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; NAICS/Industry Codes: 928110 National Security; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12101462&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stytz, Martin R. AU - Banks, Sheila B. T1 - Progress and Prospects for the Development of Computer Generated Actors for Military Simulation, Part 3—The Road Ahead. JO - Presence: Teleoperators & Virtual Environments JF - Presence: Teleoperators & Virtual Environments Y1 - 2003/12// VL - 12 IS - 6 M3 - Article SP - 629 EP - 643 PB - MIT Press SN - 10547460 AB - The development of realistic computer-generated synthetic environments, also called distributed virtual environments, relies heavily upon computer-generated actors (CGAs) to provide accurate behaviors at reasonable cost so that the synthetic environments are useful, affordable, complex, and high fidelity. Unfortunately, the pace of synthetic environment development and the level of desired CGA performance continue to rise at a much faster rate than CGA capability improvements. This insatiable demand for realism in CGAs for synthetic environments arises from the growing understanding of the significant role that modeling and simulation can play in a variety of uses. These uses include training, analysis, procurement decisions, mission rehearsal, doctrine development, force-level and task-level training, information assurance, cyberwarfare, force structure analysis, sustainability analysis, life cycle costs analysis, material management, infrastructure analysis, and many other uses. In these and other uses of military synthetic environments, CGAs play a central role because they have the potential to increase the realism of the environment while also reducing the cost of operating the environment. The progress made in addressing the technical challenges that must be overcome to realize effective and realistic CGAs for military simulation environments and the technical areas that should be the focus of future work are the subject of this paper, which surveys the technologies and progress made in the construction and use of CGAs. In this, the third installment in the series of papers discussing CGAs, we conclude our discussion of CGA technologies by concluding the discussion of human behavior modeling for CGAs, and we present some suggested future research directions for CGA technologies. [ABSTRACT FROM AUTHOR] AB - Copyright of Presence: Teleoperators & Virtual Environments is the property of MIT Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VIRTUAL reality KW - SUSTAINABLE development KW - INDUSTRIAL costs KW - PRODUCT life cycle KW - PRODUCT obsolescence KW - PRODUCTION management (Manufacturing) KW - HUMAN behavior KW - SOCIAL sciences N1 - Accession Number: 12628322; Stytz, Martin R. 1; Email Address: martin.stytz@wpafb.af.mil Banks, Sheila B. 2; Email Address: Sheila.banks@afams.af.mil; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH 2: Air Force Research Laboratory, Orlando, FL 32828; Source Info: Dec2003, Vol. 12 Issue 6, p629; Subject Term: VIRTUAL reality; Subject Term: SUSTAINABLE development; Subject Term: INDUSTRIAL costs; Subject Term: PRODUCT life cycle; Subject Term: PRODUCT obsolescence; Subject Term: PRODUCTION management (Manufacturing); Subject Term: HUMAN behavior; Subject Term: SOCIAL sciences; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; NAICS/Industry Codes: 541720 Research and Development in the Social Sciences and Humanities; NAICS/Industry Codes: 926110 Administration of General Economic Programs; Number of Pages: 15p; Document Type: Article L3 - 10.1162/105474603322955923 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12628322&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Uribe, Daniel AU - Klein, James D. T1 - THE EFFECT OF CASE-BASED VERSUS SYSTEMATIC PROBLEM SOLVING IN A COMPUTER-MEDIATED COLLABORATIVE ENVIRONMENT. JO - Quarterly Review of Distance Education JF - Quarterly Review of Distance Education Y1 - 2003///Winter2003 VL - 4 IS - 4 M3 - Article SP - 417 EP - 435 PB - Information Age Publishing SN - 15283518 AB - The purpose of this study was to investigate the effect of two instructional methods (case-based vs. systematic approach) and collaborative group size (dyads vs. quads) on learner performance in solving ill-defined problems in a Web-based environment. Working in teams of two or four, participants used a Web-based program that taught them a specific problem-solving approach. One program focused on how to solve problems using a case-based approach and the other program taught a systematic, four step problem-solving process. Participants then applied the problem-solving approach to solve realistic problem scenarios. Results indicated that participants who worked in dyads performed significantly better than those who worked in teams of four. However, those who worked in teams of four spent significantly more time on the Web-based program than participants working in dyads. Analysis of time spent solving problems revealed that participants who used the systematic approach spent more time solving the problems than participants in the case-based approach. Participants in all treatment groups had positive attitudes toward working with others, the Web-based programs, and applicability of problem-solving skills to other settings. However, results indicated that participants rated collaborating online the lowest. Analysis of the online communications between team members indicated that 95% of the interactions that took place were related to the problem-solving task. Implications for the implementation of computer-mediated collaboration in distance learning environments are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Quarterly Review of Distance Education is the property of Information Age Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WEB-based instruction KW - DISTANCE education KW - ELECTRONIC discussion groups KW - INSTRUCTIONAL systems KW - COMPUTER assisted instruction N1 - Accession Number: 12620963; Uribe, Daniel 1; Email Address: daniel.uribe@usafa.af.mil Klein, James D. 2; Affiliation: 1: United States Air Force Academy 2: Arizona State University; Source Info: Winter2003, Vol. 4 Issue 4, p417; Subject Term: WEB-based instruction; Subject Term: DISTANCE education; Subject Term: ELECTRONIC discussion groups; Subject Term: INSTRUCTIONAL systems; Subject Term: COMPUTER assisted instruction; NAICS/Industry Codes: 923110 Administration of Education Programs; NAICS/Industry Codes: 611699 All Other Miscellaneous Schools and Instruction; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; Number of Pages: 19p; Illustrations: 3 Charts, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12620963&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Selden, Nathaniel P. AU - Ketsdever, Andrew D. T1 - Comparison of force balance calibration techniques for the nano-Newton range. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2003/12// VL - 74 IS - 12 M3 - Article SP - 5249 PB - American Institute of Physics SN - 00346748 AB - With the rapid progress of micro- and nanoscale fabrication technology, devices are continually being created which produce extremely small forces. This creates a distinct need for a measurement instrument and adequate calibration techniques which can resolve forces below 1 μN. Two calibration methods for force balance measurements in the nano-Newton range are presented. These methods are based on a free molecule gas dynamic expansion through a thin-walled orifice and the electrostatic actuation of a miniature comb drive. Due to the advantages and disadvantages of every calibration technique, multiple techniques are often required to validate performance results for microscale devices. Because these calibration techniques typically rely on completely different physical processes and can be described by different sets of analytical equations, the comparison of one technique to another is necessary when high accuracy is required. The gas dynamic and electrostatic force calibration techniques have been compared and were found to agree to within 8% for force levels between 35 nano-Newtons and 1 μN. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS dynamics KW - CALIBRATION KW - SCIENTIFIC apparatus & instruments N1 - Accession Number: 11482311; Selden, Nathaniel P. 1; Email Address: andrew.ketsdever@edwards.af.mil Ketsdever, Andrew D. 2; Affiliation: 1: University of Southern California, Department of Mechanical, Aerospace Engineering, Los Angeles, California 90089-1191 2: Air Force Research Laboratory, Propulsion Directorate, Edwards Air Force Base, California 93524; Source Info: Dec2003, Vol. 74 Issue 12, p5249; Subject Term: GAS dynamics; Subject Term: CALIBRATION; Subject Term: SCIENTIFIC apparatus & instruments; NAICS/Industry Codes: 417930 Professional machinery, equipment and supplies merchant wholesalers; Number of Pages: 6p; Document Type: Article L3 - 10.1063/1.1623628 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11482311&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hong, Lang AU - Cong, Shan AU - Pronobis, Mark T. AU - Scott, Stephen T1 - Wavelets feature aided tracking (WFAT) using GMTI/HRR data JO - Signal Processing JF - Signal Processing Y1 - 2003/12// VL - 83 IS - 12 M3 - Article SP - 2683 SN - 01651684 AB - This paper presents a research development of wavelets feature aided tracking, which effectively combines information from both high-resolution range (HRR) radar profiles and ground moving target indication (GMTI) radar reports. The state-of-the-art wavelets-based statistical signal processing technique: wavelets domain hidden Markov trees is used to extract robust features from HRR profiles. With the assistance of HRR wavelets features, a GMTI tracker based on a probabilistic data association logic can effectively track ground moving targets in confusing scenarios. [Copyright &y& Elsevier] AB - Copyright of Signal Processing is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVELETS (Mathematics) KW - SIGNAL processing KW - MARKOV processes KW - Data association KW - Feature-aided tracking KW - GMTI KW - Hidden Markov tree KW - HRR KW - Target tracking KW - Wavelets N1 - Accession Number: 11113382; Hong, Lang 1; Email Address: lhong@cs.wright.edu Cong, Shan 1 Pronobis, Mark T. 2 Scott, Stephen 2; Affiliation: 1: Department of Electrical Engineering, Wright State University, 3640 Colonel Glenn Hwy, Dayton, OH 45435, USA 2: Information Directorate, Air Force Research Laboratory, Rome, NY 13441, USA; Source Info: Dec2003, Vol. 83 Issue 12, p2683; Subject Term: WAVELETS (Mathematics); Subject Term: SIGNAL processing; Subject Term: MARKOV processes; Author-Supplied Keyword: Data association; Author-Supplied Keyword: Feature-aided tracking; Author-Supplied Keyword: GMTI; Author-Supplied Keyword: Hidden Markov tree; Author-Supplied Keyword: HRR; Author-Supplied Keyword: Target tracking; Author-Supplied Keyword: Wavelets; Number of Pages: 8p; Document Type: Article L3 - 10.1016/j.sigpro.2003.07.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11113382&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fraga, Carlos G. T1 - Chemometric approach for the resolution and quantification of unresolved peaks in gas chromatography–selected-ion mass spectrometry data JO - Journal of Chromatography A JF - Journal of Chromatography A Y1 - 2003/11/26/ VL - 1019 IS - 1/2 M3 - Article SP - 31 SN - 00219673 AB - A semiautomated and integrated chemometric approach is presented for the resolution and quantification of unresolved target-analyte signals in gas chromatography-selected-ion monitoring (GC-SIM) data collected using scanning mass spectrometers. The chemometric approach utilizes an unskewing algorithm and two multivariate chemometric methods known as rank alignment and the generalized rank annihilation method (GRAM). The unskewing algorithm corrects the retention-time differences within a single GC-SIM data matrix caused by using a scanning mass spectrometer. Rank alignment objectively corrects the run-to-run retention-time difference between a sample GC-SIM data matrix and a standard addition GC-SIM data matrix. GRAM analysis uses the sample and standard addition data matrices to mathematically resolve and quantify the target-analyte signal(s). The resolution and quantification of severely unresolved target-analyte signals are demonstrated using GC-SIM data obtained from conventional heart-cut two-dimensional gas chromatography with mass spectrometric detection. In addition, the GC-SIM data is used to demonstrate the result of chemometric analysis when the absence of a target-analyte signal is obscured by interference. Chemometric analysis is shown to unambiguously detect an analyte based on its resolved mass chromatograms in situations where the traditional approach of measuring peak height fails to positively detect it. The predicted analyte concentrations are within 8% of the reference concentrations. [Copyright &y& Elsevier] AB - Copyright of Journal of Chromatography A is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS chromatography KW - CHROMATOGRAPHIC analysis KW - MASS spectrometers KW - SPECTROMETRY KW - CHROMATOGRAMS KW - Chemometrics KW - Curve resolution KW - Generalized rank annihilation method KW - Unresolved peaks N1 - Accession Number: 11179581; Fraga, Carlos G. 1; Email Address: carlos.fraga@usafa.af.mil; Affiliation: 1: Department of Chemistry, 2355 Fairchild Dr., Suite 2N225, United States Air Force Academy, Colorado 80840-6230, USA; Source Info: Nov2003, Vol. 1019 Issue 1/2, p31; Subject Term: GAS chromatography; Subject Term: CHROMATOGRAPHIC analysis; Subject Term: MASS spectrometers; Subject Term: SPECTROMETRY; Subject Term: CHROMATOGRAMS; Author-Supplied Keyword: Chemometrics; Author-Supplied Keyword: Curve resolution; Author-Supplied Keyword: Generalized rank annihilation method; Author-Supplied Keyword: Unresolved peaks; NAICS/Industry Codes: 334516 Analytical Laboratory Instrument Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1016/S0021-9673(03)01329-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11179581&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sinha, Amanda E. AU - Prazen, Bryan J. AU - Fraga, Carlos G. AU - Synovec, Robert E. T1 - Valve-based comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometric detection: instrumentation and figures-of-merit JO - Journal of Chromatography A JF - Journal of Chromatography A Y1 - 2003/11/26/ VL - 1019 IS - 1/2 M3 - Article SP - 79 SN - 00219673 AB - A valve-based comprehensive two-dimensional gas chromatograph coupled to a time-of-flight mass spectrometer (GC×GC/TOFMS) is demonstrated. The performance characteristics of the instrument were evaluated using a complex sample containing a mixture of fuel components, natural products, and organo-phosphorous compounds. The valve-based GC×GC, designed to function with an extended temperature of operation range, is shown to have high chromatographic resolution, high separation efficiency and low detection limits. Typical peak widths at base are nominally from 100 to 300 ms on column 2 and nominally 10 s on column 1. The injected mass and injected concentration limit of detection (LOD), defined as 3 standard deviations above the mean baseline noise, for three organo-phosphorous compounds (triethylphosphorothioate (TEPT), dimethyl methyl phosphonate (DMMP) and dimethyl phosphite (DMP)) in a complex environmental sample were from 6 to 38 pg, and 3 to 17 ng/ml, respectively. The temperature program for the environmental sample ranged from 40 to 230 °C, a temperature range capable of analyzing semi-volatile compounds. A new compact, stand-alone, valve-pulse generator device has been implemented and is also reported. The valve-based GC×GC instrument, therefore, offers a simple, rugged and less expensive alternative to thermally modulated instruments. [Copyright &y& Elsevier] AB - Copyright of Journal of Chromatography A is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAS chromatography KW - CHROMATOGRAPHIC analysis KW - MASS spectrometry KW - SPECTRUM analysis KW - PHOSPHAMIDON KW - ENGINEERING instruments KW - Dimethyl methyl phosphonate KW - Dimethyl phosphite KW - Gas chromatography, comprehensive two-dimensional KW - Instrumentation KW - Mass spectrometry KW - Modulator, valve-based KW - Time-of-flight mass spectrometry KW - Triethylphosphorothioate N1 - Accession Number: 11179585; Sinha, Amanda E. 1 Prazen, Bryan J. 1 Fraga, Carlos G. 2 Synovec, Robert E. 1; Email Address: synovec@chem.washington.edu; Affiliation: 1: Center for Process Analytical Chemistry, Department of Chemistry, Box 351700, University of Washington, Seattle, WA 98195-1700, USA 2: Department of Chemistry, 2355 Fairchild Dr. Suite 2N225, United States Air Force Academy, Colorado Springs, CO 80840-6230, USA; Source Info: Nov2003, Vol. 1019 Issue 1/2, p79; Subject Term: GAS chromatography; Subject Term: CHROMATOGRAPHIC analysis; Subject Term: MASS spectrometry; Subject Term: SPECTRUM analysis; Subject Term: PHOSPHAMIDON; Subject Term: ENGINEERING instruments; Author-Supplied Keyword: Dimethyl methyl phosphonate; Author-Supplied Keyword: Dimethyl phosphite; Author-Supplied Keyword: Gas chromatography, comprehensive two-dimensional; Author-Supplied Keyword: Instrumentation; Author-Supplied Keyword: Mass spectrometry; Author-Supplied Keyword: Modulator, valve-based; Author-Supplied Keyword: Time-of-flight mass spectrometry; Author-Supplied Keyword: Triethylphosphorothioate; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.chroma.2003.08.047 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11179585&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lyuksyutov, Sergei F. AU - Paramonov, Pavel B. AU - Juhl, Shane AU - Vaia, Richard A. T1 - Amplitude-modulated electrostatic nanolithography in polymers based on atomic force microscopy. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2003/11/24/ VL - 83 IS - 21 M3 - Article SP - 4405 EP - 4407 PB - American Institute of Physics SN - 00036951 AB - Amplitude modulated electrostatic lithography using atomic force microscopy (AFM) on 20–50 nm thin polymer films is discussed. Electric bias of AFM tip increases the distance over which the surface influences the oscillation amplitude of an AFM cantilever, providing a process window to control tip-film separation. Arrays of nanodots, as small as 10–50 nm wide by 1–10 nm high are created via a localized Joule heating of a small fraction of polymer above the glass transition temperature, followed by electrostatic attraction of the polarized viscoelastic polymer melt toward the AFM tip in the strong (10[sup 8]–10[sup 9] V/m) nonuniform electric field. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROSTATICS KW - LITHOGRAPHY KW - POLYMERS KW - GLASS transition temperature KW - ELECTRIC fields KW - ATOMIC force microscopy N1 - Accession Number: 11447597; Lyuksyutov, Sergei F. 1; Email Address: sfl@physics.uakron.edu Paramonov, Pavel B. 1 Juhl, Shane 2 Vaia, Richard A. 2; Affiliation: 1: Department of Physics, The University of Akron, Akron, Ohio 44325. 2: Materials and Manufacturing Directorate, Air Force Research Laboratory Wright-Patterson Air Force Base, Ohio 45433.; Source Info: 11/24/2003, Vol. 83 Issue 21, p4405; Subject Term: ELECTROSTATICS; Subject Term: LITHOGRAPHY; Subject Term: POLYMERS; Subject Term: GLASS transition temperature; Subject Term: ELECTRIC fields; Subject Term: ATOMIC force microscopy; NAICS/Industry Codes: 323119 Other printing; Number of Pages: 3p; Illustrations: 2 Diagrams, 2 Graphs; Document Type: Article L3 - 10.1063/1.1629787 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11447597&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Moser, N. A. AU - Gillespie, J. K. AU - Via, G. D. AU - Crespo, A. AU - Yannuzzi, M. J. AU - Jessen, G. H. AU - Fitch, R. C. AU - Luo, B. AU - Ren, F. AU - Gila, B. P. AU - Onstine, A. H. AU - Abernathy, C. R. AU - Pearton, S. J. T1 - Effects of surface treatments on isolation currents in AlGaN/GaN high-electron-mobility transistors. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2003/11/17/ VL - 83 IS - 20 M3 - Article SP - 4178 EP - 4180 PB - American Institute of Physics SN - 00036951 AB - Interdevice isolation currents in mesa-isolated AlGaN/GaN high-electron-mobility transistors are found to exhibit thermally activated behavior, with an activation energy of ∼1.5 eV. This value is largely independent of surface cleaning processes or the type of passivation film (SiN[sub X], Sc[sub 2]O[sub 3], MgO) used to reduce the current collapse phenomena in the devices. However, the magnitude of the isolation current is a strong function of the surface treatment employed. The lowest isolation currents for conditions under which current collapse is mitigated are obtained using Sc[sub 2]O[sub 3] passivation layers. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MODULATION-doped field-effect transistors KW - ALUMINUM compounds KW - ELECTRIC currents KW - INTEGRATED circuits -- Passivation KW - THIN films N1 - Accession Number: 11421588; Moser, N. A. 1 Gillespie, J. K. 1 Via, G. D. 1 Crespo, A. 1 Yannuzzi, M. J. 1 Jessen, G. H. 1 Fitch, R. C. 1 Luo, B. 2 Ren, F. 2 Gila, B. P. 3 Onstine, A. H. 3 Abernathy, C. R. 3 Pearton, S. J. 3; Email Address: spear@mse.ufl.edu; Affiliation: 1: Sensors Directorate, Air Force Research Laboratory Wright-Patterson Air Force Base, Ohio 45433-7322. 2: Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611. 3: Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611.; Source Info: 11/17/2003, Vol. 83 Issue 20, p4178; Subject Term: MODULATION-doped field-effect transistors; Subject Term: ALUMINUM compounds; Subject Term: ELECTRIC currents; Subject Term: INTEGRATED circuits -- Passivation; Subject Term: THIN films; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 3p; Illustrations: 3 Graphs; Document Type: Article L3 - 10.1063/1.1628394 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11421588&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Staehler, James M. AU - Mall, Shankar AU - Zawada, Larry P. T1 - Frequency dependence of high-cycle fatigue behavior of CVI C/SiC at room temperature JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2003/11/15/ VL - 63 IS - 15 M3 - Article SP - 2121 SN - 02663538 AB - Effects of loading frequency on high-cycle fatigue behavior of a chemical vapor infiltrated carbon fiber reinforced silicon carbide composite were investigated. Tension–tension fatigue tests were conducted at three frequencies, 4, 40 and 375 Hz. Fatigue run out was set to 107 cycles. Applied stress versus cycles to failure (S–N) relationships were developed for these three frequencies. At 4 and 40 Hz, fatigue run out was achieved at a stress level of 375 MPa. At 375 Hz, stress level for run out was 350 MPa. Frequency dependence was observed between the two lower frequencies (4 and 40 Hz) and the higher frequency (375 Hz), but not between two lower frequencies (4 and 40 Hz). This manifested as a reduction in cycles to failure at 375 Hz compared to 4 and 40 Hz at a given stress level. Specimen surface temperature increased due to internal heat generation from sliding friction between constituents of the composite under cyclic loading. This increase was directly related to frequency and/or applied cyclic stress level. There was no clear indication that frequency greatly impacted either the stress-strain response or the overall appearance of fracture surfaces. However, a closer examination of specimens cycled at the highest frequency (375 Hz) showed evidence of the localized oxidation at fiber surfaces that might have attributed to the reduction in fatigue life at this frequency. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE KW - CHEMICAL vapor deposition KW - SILICON carbide KW - CARBIDES KW - A. Ceramics-matrix composites KW - B. Fatigue KW - High-cycle fatigue N1 - Accession Number: 10721107; Staehler, James M. 1 Mall, Shankar 2; Email Address: shankar.mall@afit.edu Zawada, Larry P. 2; Affiliation: 1: Systran Federal Corp., Dayton, OH 45431, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Nov2003, Vol. 63 Issue 15, p2121; Subject Term: FATIGUE; Subject Term: CHEMICAL vapor deposition; Subject Term: SILICON carbide; Subject Term: CARBIDES; Author-Supplied Keyword: A. Ceramics-matrix composites; Author-Supplied Keyword: B. Fatigue; Author-Supplied Keyword: High-cycle fatigue; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/S0266-3538(03)00190-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10721107&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jogai, B. AU - Albrecht, J. D. AU - Pan, F. T1 - Electromechanical coupling in free-standing AlGaN/GaN planar structures. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2003/11/15/ VL - 94 IS - 10 M3 - Article SP - 6566 EP - 6573 PB - American Institute of Physics SN - 00218979 AB - The strain and electric fields present in free-standing AlGaN/GaN slabs are examined theoretically within the framework of fully coupled continuum elastic and dielectric models. Simultaneous solutions for the electric field and strain components are obtained by minimizing the electric enthalpy. We apply constraints appropriate to pseudomorphic semiconductor epitaxial layers and obtain closed-form analytic expressions that take into account the wurtzite crystal anisotropy. It is shown that in the absence of free charges, the calculated strain and electric fields are substantially different from those obtained using the standard model without electromechanical coupling. It is also shown, however, that when a two-dimensional electron gas is present at the AlGaN/GaN interface, a condition that is the basis for heterojunction field-effect transistors, the electromechanical coupling is screened and the decoupled model is once again a good approximation. Specific cases of these calculations corresponding to transistor and superlattice structures are discussed. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRIC fields KW - ENTHALPY KW - SEMICONDUCTORS KW - TRANSISTORS KW - CRYSTALLOGRAPHY KW - GALLIUM nitride N1 - Accession Number: 11272040; Jogai, B. 1; Email Address: brahrnanandjogai@wpath.af.mil Albrecht, J. D. 2 Pan, F. 3; Affiliation: 1: Air Force Research Laboratory; Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433 and Semiconductor Research Center Wright State University Dayton, Ohio 45435. 2: Air Force Research Laboratoo; Wright-Patterson Air Force Base, Ohio 45433. 3: Department of Civil Engineering, The University of Akron, Akron, Ohio 44325.; Source Info: 11/15/2003, Vol. 94 Issue 10, p6566; Subject Term: ELECTRIC fields; Subject Term: ENTHALPY; Subject Term: SEMICONDUCTORS; Subject Term: TRANSISTORS; Subject Term: CRYSTALLOGRAPHY; Subject Term: GALLIUM nitride; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; Number of Pages: 8p; Illustrations: 1 Diagram, 1 Chart, 7 Graphs; Document Type: Article L3 - 10.1063/1.1620378 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11272040&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhang, T. AU - Qian, X.-M. AU - Tang, X. N. AU - Ng, C. Y. AU - Chiu, Y. AU - Levandier, D. J. AU - Miller, J. S. AU - Dressie, R. A. T1 - A state-selected study of the H[sub 2][sup +](X,v[sup +]=0–17,N[sup +]=1)+Ne proton transfer reaction using the pulsed-field ionization–photoelectron–secondary ion coincidence scheme. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2003/11/15/ VL - 119 IS - 19 M3 - Article SP - 10175 EP - 10185 PB - American Institute of Physics SN - 00219606 AB - The endothermic proton transfer reaction, H[sub 2][sup +](v[sup +],N[sup +]=1)+Ne→NeH[sup +]+H(ΔH=0.54 eV), is investigated over a broad range of reactant vibrational energies using the pulsed-field ionization–photoelectron–secondary ion coincidence (PFI–PESICO) scheme. For the lowest vibrational levels, v[sup +]=0 and 1, a detailed translational energy dependence is also presented using a continuous approach for preparing reactant ions with monochromatic VUV. Sharp threshold onsets are observed, suggesting the importance of long-lived intermediates or resonances. At a translational energy, E[sub T]=0.7 eV, absolute state-selected reaction cross sections are measured for all reactant vibrational levels v[sup +]=0–17. For levels v[sup +]=0–6, the cross sections grow rapidly with vibrational quantum, above which the cross sections saturate at a value of ∼13±4 Å[sup 2]. At levels v[sup +]>13, the cross sections decline, probably due to competition with the dissociation channel. At a translational energy, E[sub T]=1.7 eV, absolute state-selected reaction cross sections are measured for reactant vibrational levels spanning the range between v[sup +]=0 and 14. Cross section growth is observed from v[sup +]=0–7, above which the cross sections no longer exhibit a steady trend. At E[sub T]=4.5 eV, cross sections are reported for vibrational levels covering the range between v[sup +]=0 and 12. The cross sections are substantially lower at this high translational energy, however, they still exhibit a substantial vibrational enhancement below v[sup +]=8. The present measurements are compared with quasiclassical trajectory (QCT) calculations. The comparison can be categorized by three distinct total energy (E[sub tot]=E[sub T]+E[sub vib]) regimes. For E[sub tot]<1 eV, the experimental cross sections exceed the QCT results, consistent with important quantum effects at low energies. For 11-ns) laser heating. For alloys, the dual-hyperbolic two-temperature model is suggested for short-pulse (<10-ns) laser heating. Due to the high strain rate caused by nanosecond- and shorter-pulse lasers, a coupled thermomechanical model should be considered for more accurately predicting the lattice temperature field. [ABSTRACT FROM AUTHOR] AB - Copyright of Numerical Heat Transfer: Part A -- Applications is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LASERS KW - HEAT transfer KW - METALS KW - HEATING N1 - Accession Number: 11292425; Chen, J.K. 1 Beraun, J.E. 1 Tham, C.L. 1; Affiliation: 1: Laser Effects Research Branch, Directed Energy Directorate, Air Force Research Laboratory, Kirkland Air Force Base, New Mexico, USA; Source Info: Nov2003, Vol. 44 Issue 7, p705; Subject Term: LASERS; Subject Term: HEAT transfer; Subject Term: METALS; Subject Term: HEATING; NAICS/Industry Codes: 221330 Steam and Air-Conditioning Supply; NAICS/Industry Codes: 238220 Plumbing, Heating, and Air-Conditioning Contractors; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; Number of Pages: 18p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11292425&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, Jong-Chan AU - Han, Se-Hui AU - Cha, Sang-Ho AU - Park, Soo-Young AU - Farmer, B.L. T1 - Synthesis and dipole–dipole interaction-induced mesomorphic behavior of poly(oxyethylene)s containing (n-octylsulfonyl)alkylthiomethyl or (n-octylsulfonyl)alkylsulfonylmethyl side groups JO - Polymer JF - Polymer Y1 - 2003/11/15/ VL - 44 IS - 24 M3 - Article SP - 7413 SN - 00323861 AB - Two series of ((n-octylsulfonyl)alkylthio)methyl-substituted poly(oxyethylene)s ((–OCH2CHR–)n, where R=–CH2S(CH2)MSO2(CH2)8H) (OTP-M, M=3,4,5,6,7,9,12), and ((n-octylsulfonyl)alkylsulfonyl)methyl-substituted poly(oxyethylene) ((–OCH2CHR–)n, where R=–CH2SO2–(CH2)MSO2(CH2)8H) (OSP-M, M=3,4,5,6,7,9,12), were synthesized using polymer analogous reactions from poly(epichlorohydrin) to study the effect of dipole–dipole interactions of the sulfone groups (SO2) on the ordered structures of the poly(oxyethylene) derivatives. The ordered phases of these polymers were studied using polarizing optical microscopy, X-ray diffraction, differential scanning calorimetry and IR spectroscopy. OTP-Ms and OSP-3 showed ordered phases originated from side chain crystallization, while OSP-Ms except OSP-3 showed liquid crystalline behavior. The poly(oxyethylene) derivatives with M=5,6,7 had double-layer structures, while the polymers with M=3,4,9,12 had intercalating double-layer structures at room temperature. The layer structures of the poly(oxyethylene) derivatives were found to be affected by the positions of the side chain sulfone groups which can generate strong dipole–dipole interactions. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMER liquid crystals KW - CRYSTALLOGRAPHY KW - MACROMOLECULES KW - SPECTRUM analysis KW - DIPOLE moments KW - SULFONES KW - Dipole–dipole interaction KW - Liquid crystalline polymer KW - Poly(oxyethylene) N1 - Accession Number: 11151610; Lee, Jong-Chan 1; Email Address: jongchan@snu.ac.kr Han, Se-Hui 1 Cha, Sang-Ho 1 Park, Soo-Young 2 Farmer, B.L. 3; Affiliation: 1: School of Chemical Engineering, Seoul National University, Seoul 151-744, South Korea 2: Department of Polymer Science, Kyungpook University, Daegu 702-701, South Korea 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7750, USA; Source Info: Nov2003, Vol. 44 Issue 24, p7413; Subject Term: POLYMER liquid crystals; Subject Term: CRYSTALLOGRAPHY; Subject Term: MACROMOLECULES; Subject Term: SPECTRUM analysis; Subject Term: DIPOLE moments; Subject Term: SULFONES; Author-Supplied Keyword: Dipole–dipole interaction; Author-Supplied Keyword: Liquid crystalline polymer; Author-Supplied Keyword: Poly(oxyethylene); Number of Pages: 13p; Document Type: Article L3 - 10.1016/j.polymer.2003.09.030 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11151610&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Prasad, Awadhesh AU - Lai, Ying-Cheng AU - Gavrielides, Athanasios AU - Kovanis, Vassilios T1 - Amplitude modulation in a pair of time-delay coupled external-cavity semiconductor lasers JO - Physics Letters A JF - Physics Letters A Y1 - 2003/11/03/ VL - 318 IS - 1/2 M3 - Article SP - 71 SN - 03759601 AB - The phenomenon of amplitude death in coupled nonlinear oscillators has been a topic of recent interest. We demonstrate that a similar phenomenon can occur in a pair of time-delay coupled, external-cavity semiconductor lasers. In particular, with coupling chaotic oscillations of the laser field can be converted into quasiperiodic motion and low-frequency fluctuations in laser power can be suppressed. [Copyright &y& Elsevier] AB - Copyright of Physics Letters A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OSCILLATIONS KW - MODULATION theory KW - CHAOS theory KW - 42.55.Px KW - 42.65.Sf N1 - Accession Number: 11113576; Prasad, Awadhesh 1 Lai, Ying-Cheng 1,2; Email Address: yclai@chaos1.la.asu.edu Gavrielides, Athanasios 3 Kovanis, Vassilios 3; Affiliation: 1: Department of Mathematics and SSERC, Arizona State University, Tempe, AZ 85287, USA 2: Departments of Electrical Engineering and Physics, Arizona State University, Tempe, AZ 85287, USA 3: Nonlinear Optics Center, Air Force Research Laboratory, DELO, Kirtland AFB, NM 87117, USA; Source Info: Nov2003, Vol. 318 Issue 1/2, p71; Subject Term: OSCILLATIONS; Subject Term: MODULATION theory; Subject Term: CHAOS theory; Author-Supplied Keyword: 42.55.Px; Author-Supplied Keyword: 42.65.Sf; Number of Pages: 7p; Document Type: Article L3 - 10.1016/j.physleta.2003.08.072 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11113576&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gaitonde, Datta V. AU - Poggie, J. AU - Givi, P. T1 - Implicit Technique for Three-Dimensional Turbulent Magnetoaerodynamics. JO - AIAA Journal JF - AIAA Journal Y1 - 2003/11// VL - 41 IS - 11 M3 - Article SP - 2179 EP - 2191 SN - 00011452 AB - A high-resolution numerical procedure designed to simulate three-dimensional nonideal magnetogasdynamic (MGD) phenomena on complex configurations is extended to enhance computational efficiency and physical fidelity. A loosely coupled approximately factored implicit method is developed to overcome time-step size limitations of explicit methods. A sub-iteration strategy is included to recover up to second-order time accuracy. Verification exercises, covering wave propagation and diffusion phenomena, are presented to demonstrate accuracy and characterize the efficiency of the numerical procedure. Because the aerodynamic environment will exhibit relatively small electrical conductivities and large compensatory magnetic fields, a low magnetic Reynolds number Re[sub σ] formulation and its solution procedure are described and verified by considering MGD-control of a compressible, laminar flat-plate boundary layer at different interaction parameters. A two-equation k-∈ turbulence model with low-Reynolds-number near-wall terms is incorporated with additional expressions to reproduce the damping effect of the magnetic field. The effect of a magnetic dipole on a supersonic turbulent flat-plate boundary layer is examined. An exploratory study of MGD control of flow past a classic reentry vehicle configuration demonstrates the capabilities of the numerical scheme. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETOHYDRODYNAMICS KW - ELECTRIC conductivity KW - REYNOLDS number N1 - Accession Number: 11559791; Gaitonde, Datta V. 1 Poggie, J. 1 Givi, P.; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air-Force Base; Source Info: Nov2003, Vol. 41 Issue 11, p2179; Subject Term: MAGNETOHYDRODYNAMICS; Subject Term: ELECTRIC conductivity; Subject Term: REYNOLDS number; Number of Pages: 13p; Illustrations: 6 Diagrams, 19 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11559791&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Moshier, Monty A. AU - Hinrichsen, Ronald L. AU - Czarnecki, Gregory J. T1 - Dynamic Loading Methodologies. JO - AIAA Journal JF - AIAA Journal Y1 - 2003/11// VL - 41 IS - 11 M3 - Article SP - 2291 EP - 2294 SN - 00011452 AB - Proposes a ground loading procedure for fighter aircrafts. Time history of displacements; Time-integrated finite element simulation of the aircraft in space; Wing deflection with typical damage; Dynamic response to damage. KW - FIGHTER planes KW - AEROFOILS KW - DYNAMIC testing N1 - Accession Number: 11559803; Moshier, Monty A. 1 Hinrichsen, Ronald L. 1 Czarnecki, Gregory J. 2; Affiliation: 1: RHAMM Technologies 2: U.S. Air Force Research Laboratory; Source Info: Nov2003, Vol. 41 Issue 11, p2291; Subject Term: FIGHTER planes; Subject Term: AEROFOILS; Subject Term: DYNAMIC testing; Number of Pages: 4p; Illustrations: 2 Black and White Photographs, 1 Diagram, 1 Chart, 7 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11559803&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kadiyala, Venkateswarlu AU - Nadeau, Lloyd J. AU - Spain, Jim C. T1 - Construction of Escherichia coli Strains for Conversion of Nitroacetophenones to ortho-Aminophenols. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2003/11// VL - 69 IS - 11 M3 - Article SP - 6520 EP - 6526 SN - 00992240 AB - The predominant bacterial pathway for nitrobenzene (NB) degradation uses an NB nitroreductase and hydroxylaminobenzene (HAB) mutase to form the ring-fission substrate ortho-aminophenol. We tested the hypothesis that constructed strains might accumulate the aminophenols from nitroacetophenones and other nitroaromatic compounds. We constructed a recombinant plasmid carrying NB nitroreductase (nbzA) and HAB mutase A (habA) genes, both from Pseudomonas pseudoalcaligenes JS45, and expressed the enzymes in Escherichia coli JS995. IPTG (isopropyl-β-D-thiogalactopyranoside)-induced cells of strain JS995 rapidly and stoichiometrically converted NB to 2-aminophenol, 2-nitroacetophenone (2NAP) to 2-amino-3-hydroxyacetophenone (2AHAP), and 3-nitroacetophenone (3NAP) to 3-amino-2-hydroxyacetophenone (3AHAP). We constructed another recombinant plasmid containing the nitroreductase gene (nfs1) from Enterobacter cloacae and habA from strain JS45 and expressed the enzymes in E. coli JS996. Strain JS996 converted NB to 2-aminophenol, 2-nitrotoluene to 2-amino-3-methylphenol, 3-nitrotoluene to 2-amino-4-methylphenol, 4-nitrobiphenyl ether to 4-amino-5-phenoxyphenol, and 1-nitronaphthalene to 2-amino-1-naphthol. In larger-scale biotransformations catalyzed by strain JS995, 75% of the 2NAP transformed was converted to 2AHAP, whereas 3AHAP was produced stoichiometrically from 3NAP. The final yields of the aminophenols after extraction and recovery were >64%. The biocatalytic synthesis of ortho-aminophenols from nitroacetophenones suggests that strain JS995 may be useful in the biocatalytic production of a variety of substituted ortho-aminophenols from the corresponding nitroaromatic compounds. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ESCHERICHIA coli KW - PHENOLS KW - NITROAROMATIC compounds N1 - Accession Number: 11613107; Kadiyala, Venkateswarlu 1 Nadeau, Lloyd J. 1 Spain, Jim C. 1; Email Address: Jim.Spain@tyndall.af.mil; Affiliation: 1: Air Force Research Laboratory, Tyndall Air Force Base, Florida; Source Info: Nov2003, Vol. 69 Issue 11, p6520; Subject Term: ESCHERICHIA coli; Subject Term: PHENOLS; Subject Term: NITROAROMATIC compounds; Number of Pages: 7p; Illustrations: 2 Diagrams, 2 Charts, 8 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11613107&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, D.A. AU - Adams, E.E. AU - Brown, R.L. T1 - A microstructural approach to predict dry snow metamorphism in generalized thermal conditions JO - Cold Regions Science & Technology JF - Cold Regions Science & Technology Y1 - 2003/11// VL - 37 IS - 3 M3 - Article SP - 213 SN - 0165232X AB - Dry snow metamorphism has traditionally been classified by the thermal environment encountered in the snowpack. Snow experiencing a predominantly macroscopically isothermal environment develops a different microstructure than snow that is subjected to a significant temperature gradient. As such, previous research has evaluated snow metamorphism based upon select thermal gradient-dependent processes, when in reality, there is a continuum of physical processes simultaneously contributing to metamorphism. In previous research, a discrete temperature-gradient transition between the two thermal environments has been used to activate separate morphological analyses. The current research focuses on a unifying approach to dry snow metamorphism that is applicable to generalized thermal environments. The movement of heat and mass is not prescribed, but is allowed to develop naturally through modeling of physical processes. Equilibrium forms and the transition to kinetic growth are considered with this model. Metamorphism predictions under macroscopically isothermal conditions are presented followed by a definition for the transition to kinetic growth. Density, grain size, bond size, and temperature dependencies are each examined in an isothermal metamorphism environment. The same physical model is then used to define a smooth transition between isothermal and temperature gradient environments. Microstructural and environmental parameters that influence transition to kinetic growth are examined. The correlation with established trends and experiments in each environment is excellent. The microstructural model is a new tool capable of evaluating metamorphism for a broad range of microstructural parameters and thermal environments. [Copyright &y& Elsevier] AB - Copyright of Cold Regions Science & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SNOWPACK augmentation KW - SNOW KW - MICROSTRUCTURE KW - METAMORPHISM (Geology) KW - Kinetic growth KW - Snow and ice KW - Snow crystal growth KW - Snow crystal structure KW - Snow metamorphism KW - Temperature gradient N1 - Accession Number: 11042054; Miller, D.A. 1; Email Address: dan.miller@usafa.af.mil Adams, E.E. 2 Brown, R.L. 2; Affiliation: 1: Department of Astronautics, US Air Force Academy, 2354 Fairchild Dr Suite 6H-155, Colorado, CO 80840, USA 2: Montana State University, Bozeman, MT, USA; Source Info: Nov2003, Vol. 37 Issue 3, p213; Subject Term: SNOWPACK augmentation; Subject Term: SNOW; Subject Term: MICROSTRUCTURE; Subject Term: METAMORPHISM (Geology); Author-Supplied Keyword: Kinetic growth; Author-Supplied Keyword: Snow and ice; Author-Supplied Keyword: Snow crystal growth; Author-Supplied Keyword: Snow crystal structure; Author-Supplied Keyword: Snow metamorphism; Author-Supplied Keyword: Temperature gradient; Number of Pages: 14p; Document Type: Article L3 - 10.1016/j.coldregions.2003.07.001 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11042054&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, D.A. AU - Adams, E.E. AU - Schmidt, D.S. AU - Brown, R.L. T1 - Preliminary experimental evidence of heating at the running surface of avalanching snow JO - Cold Regions Science & Technology JF - Cold Regions Science & Technology Y1 - 2003/11// VL - 37 IS - 3 M3 - Article SP - 421 SN - 0165232X AB - At the Montana State University Avalanche Research Site, instrumentation has been installed to measure temperatures, flow depth, and velocities during an avalanche. Five thermocouples have been installed along a 30-m section of the avalanche running surface. Temperature time histories were collected during several avalanches at the flow running surface. The flowing snow at the running surface did show a temperature increase as it progressed down the slope, but did not frequently approach the melt temperature. Snow samples were collected before the tests in the release zone and after the avalanches in the debris for microstructural comparison. A computed tomography (CT) X-ray scanner was used to obtain images of the microstructural details of the pretest and debris snow samples. Using the microstructural parameters from the CT images, the growth of the new bonds in the debris was analyzed using a vapor diffusion sintering model. New bonds were shown to grow rapidly at the expense of small high-energy structures that resulted from the avalanche. The analysis showed vapor movement and sintering of new bonds due to surface curvature differences may be a significant debris bonding mechanism in snow that does not approach melt temperatures during an avalanche. [Copyright &y& Elsevier] AB - Copyright of Cold Regions Science & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AVALANCHES KW - DEBRIS avalanches KW - MELTING points KW - MONTANA KW - UNITED States KW - Avalanche debris KW - Snow and ice KW - Snow crystal KW - Snow crystal growth KW - Snow crystal structure KW - Snow metamorphism N1 - Accession Number: 11042070; Miller, D.A. 1; Email Address: dan.miller@usafa.af.mil Adams, E.E. 2 Schmidt, D.S. 2 Brown, R.L. 2; Affiliation: 1: Department of Astronautics, 2354 Fairchild Faculty Drive, Suite 6H 155, US Air Force Academy, CO 80840, USA 2: Montana State University, Bozeman, MT, USA; Source Info: Nov2003, Vol. 37 Issue 3, p421; Subject Term: AVALANCHES; Subject Term: DEBRIS avalanches; Subject Term: MELTING points; Subject Term: MONTANA; Subject Term: UNITED States; Author-Supplied Keyword: Avalanche debris; Author-Supplied Keyword: Snow and ice; Author-Supplied Keyword: Snow crystal; Author-Supplied Keyword: Snow crystal growth; Author-Supplied Keyword: Snow crystal structure; Author-Supplied Keyword: Snow metamorphism; Number of Pages: 7p; Document Type: Article L3 - 10.1016/S0165-232X(03)00081-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11042070&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Welle, Eric J. AU - Roberts, William L. AU - Carter, Campbell D. AU - Donbar, Jeffrey M. T1 - The response of a propane-air counter-flow diffusion flame subjected to a transient flow field JO - Combustion & Flame JF - Combustion & Flame Y1 - 2003/11// VL - 135 IS - 3 M3 - Article SP - 285 SN - 00102180 AB - OH planar laser-induced fluorescence (PLIF) and particle image velocimetry have been used to study the frequency response of laminar C3H8-air counterflow diffusion flames to assess the adequacy of the steady-flamelet models. Particle image velocimetry was used to determine the flame strain rate, while OH PLIF was used both to measure temperature at the flame front, using the two-line PLIF technique, and the reaction-zone width. Both measurements demonstrate that the frequency response of flames subjected to a time-varying flow field is diffusion-limited. At the 30-Hz and 50-Hz forcing frequencies, the maximum reaction-zone temperature and width were found to respond quasi-steadily. However, at higher forcing frequencies-i.e., 100 and 200 Hz-transient behavior is evident from the phase relationship between the imposed sinusoidal strain rate and the resulting peak temperature and reaction-zone width. The measured values of the OH-field widths were well fit by an offset sine function. In all cases when the oscillation amplitude is normalized by the cycle mean strain rate and plotted against the non-dimensional flow field frequency, the results collapse onto a single line having a steep negative slope. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAMINAR flow KW - DIFFUSION KW - OSCILLATIONS KW - Diffusion flame KW - PIV KW - PLIF KW - Stokes parameter KW - Transient flame KW - Unsteady flame N1 - Accession Number: 11402781; Welle, Eric J. 1 Roberts, William L. 1; Email Address: wlrobert@eos.ncsu.edu Carter, Campbell D. 2 Donbar, Jeffrey M. 2; Affiliation: 1: Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695-7910, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7103, USA; Source Info: Nov2003, Vol. 135 Issue 3, p285; Subject Term: LAMINAR flow; Subject Term: DIFFUSION; Subject Term: OSCILLATIONS; Author-Supplied Keyword: Diffusion flame; Author-Supplied Keyword: PIV; Author-Supplied Keyword: PLIF; Author-Supplied Keyword: Stokes parameter; Author-Supplied Keyword: Transient flame; Author-Supplied Keyword: Unsteady flame; Number of Pages: 13p; Document Type: Article L3 - 10.1016/S0010-2180(03)00167-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11402781&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ross, Timothy D. T1 - Accurate confidence intervals for binomial proportion and Poisson rate estimation JO - Computers in Biology & Medicine JF - Computers in Biology & Medicine Y1 - 2003/11// VL - 33 IS - 6 M3 - Article SP - 509 SN - 00104825 AB - Estimates of proportion and rate-based performance measures may involve discrete distributions, small sample sizes, and extreme outcomes. Common methods for uncertainty characterization have limited accuracy in these circumstances. Accurate confidence interval estimators for proportions, rates, and their differences are described and MATLAB programs are made available. The resulting confidence intervals are validated and compared to common methods. The programs search for confidence intervals using an integration of the Bayesian posterior with diffuse priors to measure the confidence level. The confidence interval estimators can find one or two-sided intervals. For two-sided intervals, either minimal-length, balanced-tail probabilities, or balanced-width can be selected. [Copyright &y& Elsevier] AB - Copyright of Computers in Biology & Medicine is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONFIDENCE KW - BAYESIAN analysis KW - PROBABILITY theory KW - Bayesian KW - Binomial KW - Classifier evaluation KW - Confidence intervals KW - Differences KW - Exact KW - Minimal length KW - Poisson KW - Proportion KW - Rate KW - Significance N1 - Accession Number: 10319929; Ross, Timothy D. 1; Email Address: t.ross@ieee.org; Affiliation: 1: Air Force Research Laboratory COMPASE Center, AFRL/SNAR, 2241 Avionics Cl, Building 620, WPAFB, OH 45433, USA; Source Info: Nov2003, Vol. 33 Issue 6, p509; Subject Term: CONFIDENCE; Subject Term: BAYESIAN analysis; Subject Term: PROBABILITY theory; Author-Supplied Keyword: Bayesian; Author-Supplied Keyword: Binomial; Author-Supplied Keyword: Classifier evaluation; Author-Supplied Keyword: Confidence intervals; Author-Supplied Keyword: Differences; Author-Supplied Keyword: Exact; Author-Supplied Keyword: Minimal length; Author-Supplied Keyword: Poisson; Author-Supplied Keyword: Proportion; Author-Supplied Keyword: Rate; Author-Supplied Keyword: Significance; Number of Pages: 23p; Document Type: Article L3 - 10.1016/S0010-4825(03)00019-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10319929&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhao, Jian-Shen AU - Spain, Jim AU - Hawari, Jalal T1 - Phylogenetic and metabolic diversity of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX)-transforming bacteria in strictly anaerobic mixed cultures enriched on RDX as nitrogen source JO - FEMS Microbiology Ecology JF - FEMS Microbiology Ecology Y1 - 2003/11// VL - 46 IS - 2 M3 - Article SP - 189 SN - 01686496 AB - Five obligate anaerobes that were most closely related to Clostridium bifermentans, Clostridium celerecrescens, Clostridium saccharolyticum, Clostridium butyricum and Desulfovibrio desulfuricans by their 16S rRNA genes sequences were isolated from enrichment cultures using hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) as a nitrogen source. The above isolates transformed RDX at rates of 24.0, 5.4, 6.2, 2.5, 5.5 μmol h−1 g (dry weight) of cells−1, respectively, to nitrite, formaldehyde, methanol, and nitrous oxide. The present results indicate that clostridia are major strains responsible for RDX removal, and all isolates seemed to mainly transform RDX via its initial reduction to MNX and subsequent denitration. Since clostridia are commonly present in soil, we suggest that they may contribute to the removal of RDX in the subsurface (anoxic) soil. [Copyright &y& Elsevier] AB - Copyright of FEMS Microbiology Ecology is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NITROSO compounds KW - CLOSTRIDIUM KW - NUCLEOTIDE sequence KW - PHYLOGENY KW - Clostridium KW - Denitration KW - Desulfovibrio KW - Enrichment culture KW - Nitramine explosive KW - Nitroso compound KW - Phylogeny KW - RDX biotransformation N1 - Accession Number: 11175137; Zhao, Jian-Shen 1 Spain, Jim 2 Hawari, Jalal 1; Email Address: jalal.hawari@cnrc-nrc.gc.ca; Affiliation: 1: Biotechnology Research Institute, National Research Council of Canada, Montreal, Canada 2: Air Force Research Laboratory – MLQL, Tyndall AFB, FL 32403, USA; Source Info: Nov2003, Vol. 46 Issue 2, p189; Subject Term: NITROSO compounds; Subject Term: CLOSTRIDIUM; Subject Term: NUCLEOTIDE sequence; Subject Term: PHYLOGENY; Author-Supplied Keyword: Clostridium; Author-Supplied Keyword: Denitration; Author-Supplied Keyword: Desulfovibrio; Author-Supplied Keyword: Enrichment culture; Author-Supplied Keyword: Nitramine explosive; Author-Supplied Keyword: Nitroso compound; Author-Supplied Keyword: Phylogeny; Author-Supplied Keyword: RDX biotransformation; Number of Pages: 8p; Document Type: Article L3 - 10.1016/S0168-6496(03)00216-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11175137&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Seungmoon Jun, Eli AU - Tischler, V. A. AU - Venkayya, V. B. T1 - Multidisciplinary Design Optimization of a Built-Up Wing Structure with Tip Missile. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2003/11//Nov/Dec2003 VL - 40 IS - 6 M3 - Article SP - 1093 EP - 1098 SN - 00218669 AB - The influence of a wing tip missile on the design optimization of a wing structure is studied. Finite element models of a realistic built-up wing structure are used to represent stiffness and mass properties. The store location and the effect of the store aerodynamics and mass are the variables included. A multidisciplinary optimization technique is used to compensate/restore the lost aeroelastic performance due to the presence of the store. Missile locations are the only configuration variables addressed besides the structural variables. The built-up wing box structure is optimized with constraints on the static strength and flutter speed. The thickness and the cross-sectional areas of the structural elements are the primary variables in the optimization. The aerodynamics of the tip missile has a significant effect on the flutter characteristics. In addition, the flutter behavior of the optimized structure is very sensitive to the tip missile movement along the tip chord. The results indicate that the effect of the tip missile aft movement must be examined in conjunction with the store aerodynamics. ASTROS is the primary tool used. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - AEROELASTICITY KW - AIRFRAMES KW - WINGS (Anatomy) KW - AERODYNAMICS N1 - Accession Number: 12252895; Seungmoon Jun, Eli 1,2,3 Tischler, V. A. 4,5,6 Venkayya, V. B. 4,7,8; Affiliation: 1: Agency for Defense Development, Taejon 305-600, Republic of Korea 2: Principal Researcher, Structures Division, Aircraft and Missile Development Center, Yuseong, P.O. Box 35-3 3: Member, AIAA 4: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7542 5: Aerospace Engineer, Structures Division, Air Vehicle Directorate 6: Associate Fellow, AIAA 7: Principal Scientist, Structures Division, Air Vehicle Directorate 8: Fellow, AIAA; Source Info: Nov/Dec2003, Vol. 40 Issue 6, p1093; Subject Term: AIRPLANE wings; Subject Term: AEROELASTICITY; Subject Term: AIRFRAMES; Subject Term: WINGS (Anatomy); Subject Term: AERODYNAMICS; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 6p; Illustrations: 3 Diagrams, 2 Charts, 5 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12252895&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pettit, Chris L. AU - Grandhi, Ramana V. T1 - Optimization of a Wing Structure for Gust Response and Aileron Effectiveness. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2003/11//Nov/Dec2003 VL - 40 IS - 6 M3 - Article SP - 1185 EP - 1191 SN - 00218669 AB - Reliability-based weight optimization of a generic, fighter-like wing structure is conducted for gust response and aileron effectiveness constraints. The formulation accounts for parametric uncertainties in these aeroelastic response quantities. Reliability indices measure the probability of satisfying each constraint, and a preliminary design procedure is developed in which constraints are enforced on these indices. This framework integrates ASTROS for structural and loads analysis, object-oriented MATLAB® tools for reliability analysis, and DOT for optimization and most probable point estimation. The reliability analysis algorithm takes advantage of adaptive nonlinear approximations to compensate for nonlinearity of the failure surfaces. The wing structure is modeled with finite elements, each of which is assumed to have random thickness of known standard deviation. Young's modulus of the wing skin material is also assumed to be random. Mean thickness values are taken as design variables. Linear unsteady aerodynamics is used to estimate frequency response functions caused by continuous gust loads. Reliability index constraints are enforced for gust-induced bending moment and shear at the wing's root, and also for aileron effectiveness. Redistribution of structural mass by the optimizer produces designs with improved aeroelastic performance reliability and relatively small weight penalties. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aircraft is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRPLANE wings KW - AIRFRAMES KW - AEROELASTICITY KW - AERODYNAMICS KW - FINITE element method N1 - Accession Number: 12252907; Pettit, Chris L. 1,2,3; Email Address: chris.pettit@wpafb.af.mil Grandhi, Ramana V. 4,5,6; Email Address: rgrandhi@cs.wright.edu; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 2: Research Aerospace Engineer, AFRL/VASD, 2130 Eighth Street 3: Senior Member, AIAA 4: Wright State University, Dayton, Ohio 45435 5: Distinguished Professor, Department of Mechanical and Materials Engineering 6: Associate Fellow, AIAA; Source Info: Nov/Dec2003, Vol. 40 Issue 6, p1185; Subject Term: AIRPLANE wings; Subject Term: AIRFRAMES; Subject Term: AEROELASTICITY; Subject Term: AERODYNAMICS; Subject Term: FINITE element method; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 7p; Illustrations: 4 Diagrams, 2 Charts, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12252907&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gordnier, Raymond E. T1 - Computation of Limit-Cycle Oscillations of a Delta Wing. JO - Journal of Aircraft JF - Journal of Aircraft Y1 - 2003/11//Nov/Dec2003 VL - 40 IS - 6 M3 - Article SP - 1206 EP - 1208 SN - 00218669 AB - Focuses on the simulation of a limit-cycle oscillation (LCO) of a flat plate delta aircraft wing. Features of the delta wing model; Comparison of the amplitudes and frequencies of the wingtip trailing-edge deflections; Impact of the boundary condition specified along the root chord of the delta wing. KW - OSCILLATIONS KW - AIRPLANE wings KW - AIRFRAMES KW - SIMULATION methods & models KW - BOUNDARY value problems N1 - Accession Number: 12252910; Gordnier, Raymond E. 1,2,3; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7913 2: Senior Research Aerospace Engineer, Computational Sciences Branch, Air Vehicles Directorate 3: Associate Fellow, AIAA; Source Info: Nov/Dec2003, Vol. 40 Issue 6, p1206; Subject Term: OSCILLATIONS; Subject Term: AIRPLANE wings; Subject Term: AIRFRAMES; Subject Term: SIMULATION methods & models; Subject Term: BOUNDARY value problems; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 1 Chart, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12252910&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Donati, G.P. AU - Kaspi, R. AU - Malloy, K.J. T1 - Interpolating semiconductor alloy parameters: Application to quaternary III–V band gaps. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2003/11//11/1/2003 VL - 94 IS - 9 M3 - Article SP - 5814 PB - American Institute of Physics SN - 00218979 AB - We present a rationalized biquadratic interpolation algorithm for calculating quaternary semiconductor parameters and apply it to determine the band gaps of AlGaInAs, AlGaInP, AlInAsSb, GaInPAs, and GaInAsSb over complete compositional ranges. Extension to include bicubic corrections and quinary alloys are discussed. The band gaps of lattice-matched AlGaInAsSb and AlGaInPAs are reported. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHROMIUM-cobalt-nickel-molybdenum alloys KW - SEMICONDUCTORS KW - ENERGY bands KW - ENERGY-band theory of solids KW - CRYSTAL lattices N1 - Accession Number: 11188597; Donati, G.P. 1; Email Address: giove@chtm.untn.edu Kaspi, R. 2 Malloy, K.J. 1; Affiliation: 1: Center for High Technology Materials, University of New Mexico, 1313 Goddard Street, Albuquerque New Mexico 87106. 2: Air Force Research Laboratory, Directed Energy Directorate, Advanced Tactical Systems Branch, AFRL/DELS, Kirtland Air Force Base, Albuquerque, New Mexico 87117.; Source Info: 11/1/2003, Vol. 94 Issue 9, p5814; Subject Term: CHROMIUM-cobalt-nickel-molybdenum alloys; Subject Term: SEMICONDUCTORS; Subject Term: ENERGY bands; Subject Term: ENERGY-band theory of solids; Subject Term: CRYSTAL lattices; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 6p; Illustrations: 1 Diagram, 2 Charts, 3 Graphs; Document Type: Article L3 - 10.1063/1.1613371 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11188597&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Burton, Anthony C. AU - Carson, Katherine S. AU - Chilton, Susan M. AU - Hutchinson, W. George T1 - An experimental investigation of explanations for inconsistencies in responses to second offers in double referenda JO - Journal of Environmental Economics & Management JF - Journal of Environmental Economics & Management Y1 - 2003/11// VL - 46 IS - 3 M3 - Article SP - 472 SN - 00950696 AB - This paper demonstrates the potential for induced preference experiments to test previously unverified explanations of observed behavior in contingent valuation surveys. The NOAA Panel on Contingent Valuation called for experimental evidence on potential biases in the double referendum format. We test Carson, Groves, and Machina''s (Incentives and informational properties of preference questions, Plenary address to the European Association of Resource and Environmental Economists, Oslo, Norway, June 1999) simple cost uncertainty and weighted averaging explanations of inconsistent responses to follow-up offers in such double referenda against a baseline of certainty and truthful preference revelation. The results find evidence to support the Weighted Average hypothesis. Results regarding the cost uncertainty hypothesis are more ambiguous and merit further investigation. [Copyright &y& Elsevier] AB - Copyright of Journal of Environmental Economics & Management is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONTINGENT valuation KW - ENVIRONMENTAL economics KW - SURVEYS KW - Contingent valuation KW - Double referenda KW - Experimental economics KW - Induced preferences N1 - Accession Number: 11098573; Burton, Anthony C. 1 Carson, Katherine S. 2; Email Address: kate.carson@usafa.af.mil Chilton, Susan M. 3 Hutchinson, W. George 4; Affiliation: 1: Economics and Operational Research Division, Department of Health, Quarry House, Quarry Hill, Leeds LS2 7UE, UK 2: Department of Economics and Geography, United States Air Force Academy, HQ USAFA/DFEG, 2354 Fairchild Drive, Ste. 6K110, USAF Academy, CO 80840-6299, USA 3: University of Newcastle upon Tyne Business School-Economics, Newcastle upon Tyne, NE1 7RU, UK 4: Department of Agricultural and Food Economics, Queen's University, Belfast, Northern Ireland, BT9 5PX, UK; Source Info: Nov2003, Vol. 46 Issue 3, p472; Subject Term: CONTINGENT valuation; Subject Term: ENVIRONMENTAL economics; Subject Term: SURVEYS; Author-Supplied Keyword: Contingent valuation; Author-Supplied Keyword: Double referenda; Author-Supplied Keyword: Experimental economics; Author-Supplied Keyword: Induced preferences; Number of Pages: 18p; Document Type: Article L3 - 10.1016/S0095-0696(03)00022-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11098573&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hagge, Mark S. AU - Di Lorenzo, Scott C. AU - Lindemuth, James S. AU - Latta, Mark A. AU - Smith, James W. AU - St-Georges, Annie J. T1 - Use of Yellow Plastic Food Wrap to Retard Composite Resin Polymerization. JO - Journal of Esthetic & Restorative Dentistry JF - Journal of Esthetic & Restorative Dentistry Y1 - 2003/11// VL - 15 IS - 6 M3 - Article SP - 370 EP - 376 SN - 14964155 AB - Background: Dental chair lights can rapidly polymerize light-reactive composites beyond the point of workability, preventing adequate time for the shaping and sculpting of large direct composite restorations. Purpose: The purpose of this study was to determine whether yellow plastic food wrap placed over a dental chair light would perceptibly retard the polymerization rate of a light-cured composite (Esthet-X™, shade A1, Dentsply/Caulk, Milford, DE, USA). Materials and Methods: Zero, one, and two thicknesses of yellow plastic food wrap (Reynolds Metals Company, Richmond, VA, USA) were, in turn, used in the following scenarios: (1) placed in a spectrophotometer and compared for percentage transmission of 470 nm light; (2) placed over a curing unit light wand and compared for milliwatts of output on a radiometer; (3) placed over a dental chair light positioned 64 cm from 0.22 mm thick composite specimens, with Fourier Transform Infrared Spectrometry readings made every 40 seconds to measure degree of composite polymerization; (4) placed over a dental chair light positioned 64 cm from a direct veneer preparation (clinical simulation), which was then restored by four experienced clinicians who reported working times. Results: Results for the scenarios were as follows: (1) zero sheets 100%, one sheet 34%, two sheets 6%; (2) zero sheets 580 mW, one sheet 190 mW, two sheets 20 mW; (3) percent conversion at 80 seconds--zero sheets 8%, one sheet 0.65%, two sheets 0.76%; percent conversion at 120 seconds--zero sheets 19.11%, one sheet 12.22%, two sheets 0.42%; (4) mean working times--zero sheets 34 seconds, one sheet 72 seconds, two sheets 155 seconds. Conclusions: Yellow plastic food wrap placed over a dental chair light markedly extended the working time of a light-cured composite in each of four assessments performed. Two sheets of plastic wrap were more than twice as effective as one sheet. CLINICAL SIGNIFICANCE The suggested filtering technique with yellow plastic wrap placed over a dental chair light is a highly effective, expedient, and inexpensive method for increasing the working time of light-cured composites. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Esthetic & Restorative Dentistry is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DENTAL resins KW - DENTAL materials KW - SYNTHETIC gums & resins KW - FOURIER transform infrared spectroscopy KW - OPERATIVE dentistry N1 - Accession Number: 12662917; Hagge, Mark S. 1; Email Address: mhagge@sf.uop.edu Di Lorenzo, Scott C. 2 Lindemuth, James S. 3 Latta, Mark A. 4 Smith, James W. 5 St-Georges, Annie J. 6; Affiliation: 1: Associate professor of restorative dentistry, University of the Pacific School of Dentistry, San Francisco, CA, USA 2: Assistant professor of fixed prosthodontics, Creighton University School of Dentistry, Omaha, NE, USA 3: United States Air Force, Lackland Air Force Base, TX, USA 4: Associate dean for research, Creighton University School of Dentistry, Omaha, NE, USA 5: United States Air Force, and director, Clinical Investigation Facility, Travis Air Force Base, CA, USA 6: Assistant professor, Department of Restorative Dentistry, Faculty of Dental Medicine, University of Montreal, Quebec, Canada; Source Info: 2003, Vol. 15 Issue 6, p370; Subject Term: DENTAL resins; Subject Term: DENTAL materials; Subject Term: SYNTHETIC gums & resins; Subject Term: FOURIER transform infrared spectroscopy; Subject Term: OPERATIVE dentistry; NAICS/Industry Codes: 424690 Other Chemical and Allied Products Merchant Wholesalers; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325991 Custom Compounding of Purchased Resins; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; Number of Pages: 7p; Illustrations: 3 Color Photographs, 1 Chart, 2 Graphs; Document Type: Article; Full Text Word Count: 3188 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12662917&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Darwin, Christopher J. AU - Brungart, Douglas S. AU - Simpson, Brian D. T1 - Effects of fundamental frequency and vocal-tract length changes on attention to one of two simultaneous talkers. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2003/11// VL - 114 IS - 5 M3 - Article SP - 2913 EP - 2922 SN - 00014966 AB - Three experiments used the Coordinated Response Measure task to examine the roles that differences in F0 and differences in vocal-tract length have on the ability to attend to one of two simultaneous speech signals. The first experiment asked how increases in the natural F0 difference between two sentences (originally spoken by the same talker) affected listeners' ability to attend to one of the sentences. The second experiment used differences in vocal-tract length, and the third used both F0 and vocal-tract length differences. Differences in F0 greater than 2 semitones produced systematic improvements in performance. Differences in vocal-tract length produced systematic improvements in performance when the ratio of lengths was 1.08 or greater, particularly when the shorter vocal tract belonged to the target talker. Neither of these manipulations produced improvements in performance as great as those produced by a different-sex talker. Systematic changes in both F0 and vocal-tract length that simulated an incremental shift in gender produced substantially larger improvements in performance than did differences in F0 or vocal-tract length alone. In general, shifting one of two utterances spoken by a female voice towards a male voice produces a greater improvement in performance than shifting male towards female. The increase in performance varied with the intonation patterns of individual talkers, being smallest for those talkers who showed most variability in their intonation patterns between different utterances. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LARYNX KW - VOICE KW - THROAT KW - SOUND KW - VOCAL tract KW - VOCAL cords N1 - Accession Number: 20589675; Darwin, Christopher J. 1; Email Address: cjd@biols.susx.ac.uk Brungart, Douglas S. 2 Simpson, Brian D. 3; Affiliation: 1: Experimental Psychology, University of Sussex, Brighton BN1 9QG, United Kingdom 2: Air Force Research Laboratory, Human Effectiveness Directorate, Wright-Patterson AFB, Ohio 45433 3: Veridian, 5200 Springfield Pike, Suite 2000, Dayton, Ohio 45431; Source Info: Nov2003, Vol. 114 Issue 5, p2913; Subject Term: LARYNX; Subject Term: VOICE; Subject Term: THROAT; Subject Term: SOUND; Subject Term: VOCAL tract; Subject Term: VOCAL cords; Number of Pages: 10p; Illustrations: 4 Charts, 10 Graphs; Document Type: Article L3 - 10.1121/1.1616924 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20589675&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nielsen, Paul D. AU - Noor, Ahmed K. AU - Venneri, Samuel L. T1 - the next century of air power. JO - Mechanical Engineering JF - Mechanical Engineering Y1 - 2003/11// VL - 125 IS - 11 M3 - Article SP - 34 PB - American Society of Mechanical Engineers SN - 00256501 AB - In the United States, the commercial aerospace industry has been a dominant sector in the economy and the defense aerospace industry has been a vital component of national security. Our continued economic growth and national security in the 21st century will depend on strong U.S. leadership in the broad aerospace sector. As we approach the 100th anniversary of powered flight, engineers and scientists from the broad aerospace community have much to celebrate. This is an especially great time to be a technologist in the aerospace sector. There are many challenges, but there are also unbounded opportunities. Some are evolutionary and some are truly revolutionary. Much of this is driven by competition between highly evolved systems with foundations in the 20th century and new systems conceived in the 21st century. The next century of flight will see the roles of future unmanned vehicles merging with those of space-based assets as technology allows them to fly higher, longer and with more capable sensor packages. The key enabling technologies are found in mechanical systems, power systems and propulsion system components such as extended-life, high-temperature turbines and integrated, thermally managed fuel systems. INSET: Air meets space. KW - AEROSPACE industries KW - DEFENSE industries KW - REMOTELY piloted vehicles KW - SPACE industrialization KW - UNITED States N1 - Accession Number: 11272733; Nielsen, Paul D. 1 Noor, Ahmed K. 2 Venneri, Samuel L. 3; Affiliation: 1: Major General Paul D. Nielsen is the Commander of the Air Force Research Laboratory at Wright-Patterson Air Force Base in Ohio. 2: Eminent Scholar and William E. Loebeck Professor of Aerospace Engineering and the director of the Center for Advanced Engineering Environments at Old Dominion University in Norfolk, Va. He is also adjunct professor of mechanical and aerospace engineering at the University of Florida in Gainesville. 3: Former chief technologist of NASA.; Source Info: Nov2003, Vol. 125 Issue 11, p34; Subject Term: AEROSPACE industries; Subject Term: DEFENSE industries; Subject Term: REMOTELY piloted vehicles; Subject Term: SPACE industrialization; Subject Term: UNITED States; NAICS/Industry Codes: 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; NAICS/Industry Codes: 336412 Aircraft Engine and Engine Parts Manufacturing; NAICS/Industry Codes: 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing; NAICS/Industry Codes: 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing; Number of Pages: 7p; Illustrations: 5 Color Photographs; Document Type: Article; Full Text Word Count: 2951 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11272733&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - CHENG, Z. Q. AU - PELLETTIERE, J. A. T1 - CORRELATION ANALYSIS OF AUTOMOBILE CRASH RESPONSES BASED ON WAVELET DECOMPOSITIONS JO - Mechanical Systems & Signal Processing JF - Mechanical Systems & Signal Processing Y1 - 2003/11// VL - 17 IS - 6 M3 - Article SP - 1237 SN - 08883270 AB - Wavelets are used to analyse automobile crash responses. Crash signals are decomposed into a wavelet or wavelet packet basis, which provide an intuitive vision of impact behaviour of the vehicle structure and occupants. The decomposed signals are further divided into segments that represent vibrations occurring in certain time spans. A correlation analysis is then performed on the decomposed and segmented signals in order to determine the dynamic relationship between different parts of the structure or different segments of the body. The structural responses and the occupant responses in a full frontal impact test are analysed. It is shown that when the gross motions of the structural components are superimposed with significant short time vibrations, the occupant forward motion is basically a rigid body motion. Published by Elsevier Science Ltd. [Copyright &y& Elsevier] AB - Copyright of Mechanical Systems & Signal Processing is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WAVELETS (Mathematics) KW - WAVE packets KW - TRAFFIC accidents N1 - Accession Number: 10568211; CHENG, Z. Q. 1 PELLETTIERE, J. A. 2; Affiliation: 1: Veridian Engineering, 5200 Springfield Pike Suite 200, Dayton, OH, 45431-1289, U.S.Af1zhiqing.cheng@wpafb.af.mil 2: Human Effectiveness Directorate, Air Force Research Laboratory, Dayton, OH, 45433, U.S.A; Source Info: Nov2003, Vol. 17 Issue 6, p1237; Subject Term: WAVELETS (Mathematics); Subject Term: WAVE packets; Subject Term: TRAFFIC accidents; Number of Pages: 21p; Document Type: Article L3 - 10.1006/mssp.2002.1511 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10568211&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Maldoni, M.M. AU - Egan, M.P. AU - Smith, R.G. AU - Robinson, G. AU - Wright, C.M. T1 - Crystalline water ice in OH32.8–0.3. JO - Monthly Notices of the Royal Astronomical Society JF - Monthly Notices of the Royal Astronomical Society Y1 - 2003/11//11/1/2003 VL - 345 IS - 3 M3 - Article SP - 912 PB - Oxford University Press / USA SN - 00358711 AB - The 2.2–200 μm spectrum of OH32.8–0.3 has been modelled. Mie theory and radiative transfer models of the 3-μm band of H2O ice are consistent with a strongly crystalline structural phase. This is also confirmed by the presence of a 44/62-μm band complex analogous to that of laboratory crystalline H2O ice analogues. The highly ordered phase may be the result of direct crystallization upon deposition as has been theorized by Kouchi et al. At the large total optical depths typical of the radiative transfer models for this object (τ9.7∼ 40), we find no significant difference between the Mie theory and radiative transfer models of the 3-μm band. On the other hand, large differences are found for the 9.7-μm silicate band. In contrast to Mie theory extinction profiles, those computed via radiative transfer modelling indicate that the 12-μm H2O ice band (the so-called librational band) is substantially attenuated. This, in addition to the inherent broadness and weakness of the 12-μm ice band, may explain why this band has not been clearly identified in observational spectra of oxygen–rich evolved objects. [ABSTRACT FROM AUTHOR] AB - Copyright of Monthly Notices of the Royal Astronomical Society is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STARS KW - INFRARED spectra KW - RADIATIVE transfer KW - ASTROPHYSICS KW - CIRCUMSTELLAR matter KW - INTERSTELLAR reddening N1 - Accession Number: 11168798; Maldoni, M.M. 1; Email Address: m.maldoni@adfa.edu.au Egan, M.P. 2 Smith, R.G. 1 Robinson, G. 1 Wright, C.M. 1; Affiliation: 1: Australian Defence Force Academy 2: Air Force Research Laboratory, Washington, DC; Source Info: 11/1/2003, Vol. 345 Issue 3, p912; Subject Term: STARS; Subject Term: INFRARED spectra; Subject Term: RADIATIVE transfer; Subject Term: ASTROPHYSICS; Subject Term: CIRCUMSTELLAR matter; Subject Term: INTERSTELLAR reddening; Number of Pages: 11p; Document Type: Article L3 - 10.1046/j.1365-8711.2003.07013.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11168798&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hoshi, Yoko AU - Tsou, Brian H. AU - Billock, Vincent A. AU - Tanosaki, Masato AU - Iguchi, Yoshinobu AU - Shimada, Miho AU - Shinba, Toshikazu AU - Yamada, Yoshifumi AU - Oda, Ichiro T1 - Spatiotemporal characteristics of hemodynamic changes in the human lateral prefrontal cortex during working memory tasks JO - NeuroImage JF - NeuroImage Y1 - 2003/11// VL - 20 IS - 3 M3 - Article SP - 1493 SN - 10538119 AB - The prefrontal cortex (PFC) is widely believed to subserve mental manipulation and monitoring processes ascribed to the central executive (CE) of working memory (WM). We attempted to examine and localize the CE by functional imaging of the frontal cortex during tasks designed to require the CE. Using near-infrared spectroscopy, we studied the spatiotemporal dynamics of oxygenated hemoglobin (oxy-Hb), an indicator of changes in regional cerebral blood flow, in both sides of lateral PFC during WM intensive tasks. In most participants, increases in oxy-Hb were localized within one subdivison during performance of the n-back task, whereas oxy-Hb increased more diffusely during the random number generation (RNG) task. Activation of the ventrolateral PFC (VLPFC) was prominent in the n-back task; both sustained and transient dynamics were observed. Transient dynamics means that oxy-Hb first increases but then decreases to less than 50% of the peak value or below the baseline level before the end of the task. For the RNG task sustained activity was also observed in the dorsolateral PFC (DLPFC), especially in the right hemisphere. However, details of patterns of activation varied across participants: subdivisions commonly activated during performance of the two tasks were the bilateral VLPFCs, either side of the VLPFC, and either side of the DLPFC in 4, 2, and 4 of the 12 participants, respectively. The remaining 2 of the 12 participants had no regions commonly activated by these tasks. These results suggest that although the PFC is implicated in the CE, there is no stereotyped anatomical PFC substrate for the CE. [Copyright &y& Elsevier] AB - Copyright of NeuroImage is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PREFRONTAL cortex KW - SHORT-term memory KW - HEMOGLOBIN KW - DYNAMICS N1 - Accession Number: 11470087; Hoshi, Yoko 1; Email Address: yhoshi@prit.go.jp Tsou, Brian H. 2 Billock, Vincent A. 3 Tanosaki, Masato 1 Iguchi, Yoshinobu 1 Shimada, Miho 1 Shinba, Toshikazu 1 Yamada, Yoshifumi 4 Oda, Ichiro 5; Affiliation: 1: Department of Integrated Neuroscience, Tokyo Institute of Psychiatry, Kamikitazawa-2-1-8, Setagaya-ku, Tokyo 156-8585, Japan 2: Air Force Research Laboratory, 2210 Eighth Street, Wright-Patterson AFB, OH 45433-7511, USA 3: Veridian Engineering, 5200 Springfield Pike, Dayton, OH 45431, USA 4: Biophysics Laboratory, Research Institute for Electronic Science, Hokkaido University, N12 W6, Kita-Ku, Sapporo 060-0812, Japan 5: Technology Research Laboratory, Shimadzu Company, Horiyamashita 380-1, Hadano, 259-1304, Japan; Source Info: Nov2003, Vol. 20 Issue 3, p1493; Subject Term: PREFRONTAL cortex; Subject Term: SHORT-term memory; Subject Term: HEMOGLOBIN; Subject Term: DYNAMICS; Number of Pages: 12p; Document Type: Article L3 - 10.1016/S1053-8119(03)00412-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11470087&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Eyles, C.J. AU - Simnett, G. M. AU - Cooke, M. P. AU - Jackson, B. V. AU - Buffington, A. AU - Hick, P. P. AU - Waltham, N. R. AU - King, J. M. AU - Anderson, P. A. AU - Holladay, P. E. T1 - The Solar Mass Ejection Imager (Smei). JO - Solar Physics JF - Solar Physics Y1 - 2003/11// VL - 217 IS - 2 M3 - Article SP - 319 EP - 347 PB - Springer Science & Business Media B.V. SN - 00380938 AB - We describe an instrument (SMEI) which has been specifically designed to detect and forecast the arrival of solar mass ejections and other heliospheric structures which are moving towards the Earth. Such events may cause geomagnetic storms, with resulting radiation hazards and disruption to military and commercial communications; damage to Earth-orbiting spacecraft; and also terrestrial effects such as surges in transcontinental power transmission lines. The detectors are sensitive over the optical wave-band, which is measured using CCD cameras. SMEI was launched on 6 January 2003 on the Coriolis spacecraft into a Sun-synchronous polar orbit as part of the US DoD Space Test Programme. The instrument contains three cameras, each with a field of view of 60°×3°, which are mounted onto the spacecraft such that they scan most of the sky every 102-min orbit. The sensitivity is such that changes in sky brightness equivalent to a tenth magnitude star in one square degree of sky may be detected. Each camera takes an image every 4 s. The normal telemetry rate is 128 kbits s-1. In order to extract the emission from a typical large coronal mass ejection, stellar images and the signal from the zodiacal dust cloud must be subtracted. This requires accurate relative photometry to 0.1%. One consequence is that images of stars and the zodiacal cloud will be measured to this photometric accuracy once per orbit. This will enable studies of transient zodiacal cloud phenomena, flare stars, supernovae, comets, and other varying point-like objects. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MASS (Physics) KW - STARS KW - SPACE vehicles KW - CAMERAS KW - ELECTRIC lines KW - SOLAR activity KW - ENERGY industries N1 - Accession Number: 16859302; Eyles, C.J. 1 Simnett, G. M. 1; Email Address: gms@star.sr.bham.ac.uk Cooke, M. P. 1 Jackson, B. V. 2 Buffington, A. 2 Hick, P. P. 2 Waltham, N. R. 3 King, J. M. 3 Anderson, P. A. 4 Holladay, P. E. 5; Affiliation: 1: School of Physics and Space Research, University of Birmingham, B15 2TT, U.K. 2: Center for Astrophysics and Space Science, University of California, San Diego, CA 92093-0424, U.S.A. 3: Space Science Department, Rutherford-Appleton Laboratory, Chilton, OX11 0QX, U.K. 4: Astronomy Department, Center for Space Physics, Boston University, Boston, MA, U.S.A. 5: Air Force Research Laboratory/VSBS, 29, Randolph Road, Hanscom AFB, MA 01731-3010, U.S.A.; Source Info: Nov2003, Vol. 217 Issue 2, p319; Subject Term: MASS (Physics); Subject Term: STARS; Subject Term: SPACE vehicles; Subject Term: CAMERAS; Subject Term: ELECTRIC lines; Subject Term: SOLAR activity; Subject Term: ENERGY industries; NAICS/Industry Codes: 414430 Photographic equipment and supplies merchant wholesalers; NAICS/Industry Codes: 443145 Camera and photographic supplies stores; NAICS/Industry Codes: 443142 Electronics Stores; NAICS/Industry Codes: 423410 Photographic Equipment and Supplies Merchant Wholesalers; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 238910 Site Preparation Contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 423860 Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers; Number of Pages: 29p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16859302&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lu, Weijie AU - Mitchel, W.C. AU - Landis, G.R. AU - Crenshaw, T.R. AU - Collins, W. Eugene T1 - Ohmic contact properties of Ni/C film on 4H-SiC JO - Solid-State Electronics JF - Solid-State Electronics Y1 - 2003/11// VL - 47 IS - 11 M3 - Article SP - 2001 SN - 00381101 AB - Ohmic contact formation of Ni/C film on n-type 4H-SiC is investigated. A carbon interfacial layer between Ni film and SiC is used to improve ohmic contact properties. The contact properties of Ni/C/SiC structure with various thickness of carbon film, annealing time, and annealing temperatures are examined. The low specific contact resistivities at 10−6–10−7 Ω cm2 are achieved on the SiC with a doping concentration of 3.1 × 1019 cm−3 after annealing at 700–800 °C in Ar for 2 h. For the Ni/C/SiC with moderate doping concentrations of 1.6 × 1018 and 1.1 × 1017 cm−3, the specific contact resistivities at 10−5 Ω cm2 are formed after annealing at 900–1000 °C. Raman spectroscopy, scanning electron microscopy, and atomic force microscopy are used for characterizations of carbon structural evolutions and film morphology, and are interpreted by the catalytic graphitization mechanism. The formation of nano-size graphitic structures and related structures results in the formation of ohmic contact on SiC, and Ni as a graphitization catalyst accelerates the graphitization process. [Copyright &y& Elsevier] AB - Copyright of Solid-State Electronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OHMIC contacts KW - SILICON carbide KW - NICKEL films KW - Electrical contact properties KW - Graphitization KW - Ohmic contact KW - SiC N1 - Accession Number: 10503038; Lu, Weijie 1; Email Address: wlu@fisk.edu Mitchel, W.C. 2 Landis, G.R. 3 Crenshaw, T.R. 1 Collins, W. Eugene 1; Affiliation: 1: Department of Physics, Fisk University, Nashville, TN 37208, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 3: University of Dayton Research Institute, Dayton, OH 45469, USA; Source Info: Nov2003, Vol. 47 Issue 11, p2001; Subject Term: OHMIC contacts; Subject Term: SILICON carbide; Subject Term: NICKEL films; Author-Supplied Keyword: Electrical contact properties; Author-Supplied Keyword: Graphitization; Author-Supplied Keyword: Ohmic contact; Author-Supplied Keyword: SiC; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/S0038-1101(03)00165-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10503038&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Look, D.C. AU - Farlow, G.C. AU - Drevinsky, P.J. AU - Bliss, D.F. AU - Sizelove, J.R. T1 - On the nitrogen vacancy in GaN. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2003/10/27/ VL - 83 IS - 17 M3 - Article SP - 3525 PB - American Institute of Physics SN - 00036951 AB - The dominant electrically active defect produced by 0.42 MeV electron irradiation in GaN is a 70 meV donor. Since only N-sublattice displacements can be produced at this energy, and since theory predicts that the N interstitial is a deep acceptor in n-type GaN, we argue that the 70 meV donor is most likely the isolated N vacancy. The background shallow donors, in the 24–26 meV range, actually decrease in concentration, probably due to interactions with mobile N interstitials that are produced by the irradiation. Thus, the recent assignment of a photoluminescence (PL) line as an exciton bound to a 25 meV N-vacancy donor is incompatible with our results. Moreover, we do not observe that PL line in our sample. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - NITROGEN KW - ELECTRONS N1 - Accession Number: 11123017; Look, D.C. 1,2; Email Address: david.look@wpafb.af.mil Farlow, G.C. 3 Drevinsky, P.J. 4 Bliss, D.F. 4 Sizelove, J.R. 2; Affiliation: 1: Semiconductor Research Center, Wright State University, Ohio 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 3: Physics Department, Wright State University, Ohio 4: Air Force Research Laboratory, Sensors Dirctorate, Hanscom Air Force Base, Massachusetts; Source Info: 10/27/2003, Vol. 83 Issue 17, p3525; Subject Term: GALLIUM nitride; Subject Term: NITROGEN; Subject Term: ELECTRONS; NAICS/Industry Codes: 325120 Industrial Gas Manufacturing; Number of Pages: 3p; Illustrations: 1 Chart, 2 Graphs; Document Type: Article L3 - 10.1063/1.1623009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11123017&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dunlavy, M.A. AU - Shivpuri, R. AU - Semiatin, S.L. T1 - Failure during hot working of spray-formed Rene’ 88 JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2003/10/25/ VL - 359 IS - 1/2 M3 - Article SP - 210 SN - 09215093 AB - Isothermal, hot compression tests were conducted on spray-formed Rene’ 88 to establish the effects of strain, strain rate, and temperature on the closure of porosity and the initiation of ductile fracture during hot working. In the as-sprayed condition, porosity was evenly distributed throughout the material in both the transverse and longitudinal directions. Hot compression tests were conducted at temperatures between 760 and 1090 °C at strain rates of 0.01, 0.1, and 1.0 s−1 to axial height strains of 0.4, 0.7, or 1.1. The deformation gave rise to near full-density (0.06% porosity) at the center and to porous regions (∼0.5% porosity) ∼1–2 mm from the barreled free surface on the equatorial plane. From these observations and parallel finite-element-method (FEM) simulations, it was concluded that pore closure was enhanced by a state of triaxial compressive stress. Observations of pore coalescence and fracture via splat boundary separation at the free surface were also interpreted via FEM simulations. The simulation results for the near-surface region revealed that a maximum-tensile-work, rather than a tensile-stress, criterion controlled the process of splat-boundary separation, pore linkage, and final ductile fracture. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS KW - POROSITY KW - STRAINS & stresses (Mechanics) KW - Ductile fracture KW - Nickel-base superalloys KW - Pore consolidation KW - Spray-formed N1 - Accession Number: 10504308; Dunlavy, M.A. 1; Email Address: michael.dunlavy@wpafb.af.mil Shivpuri, R. 2 Semiatin, S.L. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMP, Wright-Patterson Air Force Base, OH 45433-7817, USA 2: Department of Industrial, Welding, and Systems Engineering, Ohio State University, Columbus, OH 43210, USA; Source Info: Oct2003, Vol. 359 Issue 1/2, p210; Subject Term: METALS; Subject Term: POROSITY; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: Ductile fracture; Author-Supplied Keyword: Nickel-base superalloys; Author-Supplied Keyword: Pore consolidation; Author-Supplied Keyword: Spray-formed; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; Number of Pages: 10p; Document Type: Article L3 - 10.1016/S0921-5093(03)00345-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10504308&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jin, O. AU - Mall, S. T1 - Effects of microstructure on short crack growth behavior of Ti–6Al–2Sn–4Zr–2Mo–0.1Si alloy JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2003/10/25/ VL - 359 IS - 1/2 M3 - Article SP - 356 SN - 09215093 AB - Crack initiation and short crack behavior of Ti–6Al–2Sn–4Zr–2Mo–0.1Si (Ti6242) with fine and coarse lamellar microstructure were characterized. The fine microstructure showed a good crack initiation resistance compared with the coarse microstructure while the latter had better resistance to crack propagation than the former. Material microstructure influenced the degree of oscillation in crack growth rates during early crack growth stage and the surface crack length at which the transition from Stage I to Stage II occurred. No difference in short crack growth behavior between the two microstructures was observed. In the fine microstructure, the behavior of short and long crack growth was similar. However, in the coarse microstructure, the short crack growth rate was almost one order magnitude faster than the long crack growth rate at a given stress intensity factor range. Overall, the long crack with the coarse microstructure was more fatigue resistant than the three others, which were all similar. This resulted from the fact that the long crack growth is significantly affected by the anisotropic microstructure in the coarse case, i.e. variations in colony size and orientation between neighboring colonies. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - MICROSTRUCTURE KW - Microstructure KW - Short crack growth KW - Titanium Alloy N1 - Accession Number: 10504327; Jin, O. 1 Mall, S. 2; Email Address: shankar.mall@afit.edu; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433-7765, USA 2: Materials and Manufacturing Directorate (AFRL/MLLMN), Air Force Research Laboratory, Air Force Institute of Technology, AFIT/ENY, Bldg. 640, 2950 P. St., Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Oct2003, Vol. 359 Issue 1/2, p356; Subject Term: TITANIUM alloys; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Short crack growth; Author-Supplied Keyword: Titanium Alloy; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 12p; Document Type: Article L3 - 10.1016/S0921-5093(03)00377-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10504327&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiao AU - C. Q. AU - DeJoseph AU - C. A. Jr. AU - Garscadden AU - A. T1 - Formation of Positive and Negative Ions in CH3NO2. JO - Journal of Physical Chemistry A JF - Journal of Physical Chemistry A Y1 - 2003/10/22/ VL - 107 IS - 42 M3 - Article SP - 9040 EP - 9044 SN - 10895639 AB - Absolute dissociative ionization cross-sections from threshold to 200 eV have been measured using Fourier transform mass spectrometry (FTMS). In the production of positive ions by electron impact ionization, 13 ions are detected, including the parent ion CH3NO2+ and the four most important fragment ions CH3NO+, NO2+, NO+, and CH3+. Kinetic energies of some selected positive ions are determined using the technique of trapping potential dependency study in FTMS experiments. In the production of negative ions by dissociative electron attachment to nitromethane, three anions were detected: CH2NO2-, NO2-, and CN-. The high sensitivity of the FTMS permits the subsequent time-resolved reactions of these anions to be studied at very low pressure. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry A is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONIZATION (Atomic physics) KW - FOURIER transforms KW - MASS spectrometry KW - IONS N1 - Accession Number: 11707698; Jiao C. Q. 1 DeJoseph C. A. Jr. 1 Garscadden A. 1; Affiliation: 1: Innovative Scientific Solutions Inc., Dayton, Ohio 45440-3638, and Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7251; Source Info: Oct2003, Vol. 107 Issue 42, p9040; Subject Term: IONIZATION (Atomic physics); Subject Term: FOURIER transforms; Subject Term: MASS spectrometry; Subject Term: IONS; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11707698&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hay, R.S. AU - Marshall, D.B. T1 - Deformation twinning in monazite JO - Acta Materialia JF - Acta Materialia Y1 - 2003/10/20/ VL - 51 IS - 18 M3 - Article SP - 5235 SN - 13596454 AB - Polycrystalline monazite (LaPO4) was deformed at room temperature by a spherical indenter. Deformation twins were identified by TEM in 70 grains. Five twin planes were found: (1 0 0) was by far the most common; (0 0 1) and (1 2 0) were less common; (1 2 2¯) was rare, and kinks in (1 2 0) twins were identified as irrational ′(4 8 3)′ twin planes. The twinning modes on these planes were inferred from the expression of twinning shear at free surfaces, predictions of classical deformation twinning theory, and various considerations of twin morphology and crystal structure. Atomic shuffle calculations that allow formation of either a glide plane or a mirror plane at the twin interface were used to analyze twin modes. The inferred twin modes all have small atomic shuffles. For (0 0 1) twins, the smallest shuffles were obtained with a glide plane at the interface, with displacement vector R=1/2[010]. The results do not uniquely define a twin mode on (1 0 0), leaving open the possibility of more than one mode operating on this plane. Factors that may determine the operative deformation twinning modes are discussed. Crystal structure considerations suggest that the relative abundance of twinning modes may correlate with low shear modulus on the twin plane in the direction of twinning shear, and with a possible low-energy interface structure consisting of a layer of xenotime of one half-unit-cell thickness that could form at (1 0 0) and (0 0 1) twins. The three most common twins have low strains to low ∑ coincidence site lattices (CSLs). [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONAZITE KW - THORIUM ores KW - PHOSPHATE minerals KW - CRYSTALLOGRAPHY KW - SHEAR (Mechanics) KW - DEFORMATIONS (Mechanics) KW - SURFACES (Geometry) KW - Crystalline oxides KW - Deformation structure KW - Modeling KW - Monazite KW - Transmission electron microscopy KW - Twinning N1 - Accession Number: 10999378; Hay, R.S. 1; Email Address: Randall.Hay@wpafb.af.mil Marshall, D.B. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH, USA 2: Rockwell Scientific Co., Thousand Oaks, CA, USA; Source Info: Oct2003, Vol. 51 Issue 18, p5235; Subject Term: MONAZITE; Subject Term: THORIUM ores; Subject Term: PHOSPHATE minerals; Subject Term: CRYSTALLOGRAPHY; Subject Term: SHEAR (Mechanics); Subject Term: DEFORMATIONS (Mechanics); Subject Term: SURFACES (Geometry); Author-Supplied Keyword: Crystalline oxides; Author-Supplied Keyword: Deformation structure; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Monazite; Author-Supplied Keyword: Transmission electron microscopy; Author-Supplied Keyword: Twinning; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 20p; Document Type: Article L3 - 10.1016/S1359-6454(03)00305-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10999378&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hay, R.S. T1 - (1 2 0) and (1 2 2¯) monazite deformation twins JO - Acta Materialia JF - Acta Materialia Y1 - 2003/10/20/ VL - 51 IS - 18 M3 - Article SP - 5255 SN - 13596454 AB - Unusual features of (1 2 0) and (1 2 2¯) deformation twins in monazite (monoclinic LaPO4) are described and analyzed. These features are kinks and other irregularities in (1 2 0) twins, and V-shaped indentations on (1 2 0) and (1 2 2¯) twin planes. Twinning shear analysis suggests that the kinks are a type II deformation twin mode with shear direction (η1) of [2 1¯ 0]. This complements previous analysis based on atom shuffling considerations. Shear strain compatibility requires extensive plastic deformation in the kink. The V-shaped indentations may be analogous to similar structures in b.c.c metal deformation twins. Deformation mechanisms that may be associated with these structures are discussed. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MONAZITE KW - THORIUM ores KW - DEFORMATIONS (Mechanics) KW - SHEAR (Mechanics) KW - STRAINS & stresses (Mechanics) KW - Crystalline oxides KW - Deformation structure KW - Modeling KW - Transmission electron microscopy KW - Twinning N1 - Accession Number: 10999382; Hay, R.S. 1; Email Address: Randall.Hay@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH, USA; Source Info: Oct2003, Vol. 51 Issue 18, p5255; Subject Term: MONAZITE; Subject Term: THORIUM ores; Subject Term: DEFORMATIONS (Mechanics); Subject Term: SHEAR (Mechanics); Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: Crystalline oxides; Author-Supplied Keyword: Deformation structure; Author-Supplied Keyword: Modeling; Author-Supplied Keyword: Transmission electron microscopy; Author-Supplied Keyword: Twinning; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 8p; Document Type: Article L3 - 10.1016/S1359-6454(03)00304-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10999382&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, Jeoung Han AU - Semiatin, S.L. AU - Lee, Chong Soo T1 - Constitutive analysis of the high-temperature deformation of Ti–6Al–4V with a transformed microstructure JO - Acta Materialia JF - Acta Materialia Y1 - 2003/10/20/ VL - 51 IS - 18 M3 - Article SP - 5613 SN - 13596454 AB - The high-temperature deformation mechanisms of Ti–6Al–4V with a transformed microstructure were determined within the framework of inelastic-deformation theory. For this purpose, load-relaxation tests were conducted on samples with a lamellar structure containing different alpha-platelet thicknesses at temperatures of 715–900 °C. The flow stress-versus-strain rate curves for all the microstructures were well fit with an inelastic-deformation equation describing grain-matrix deformation (GMD) (dislocation glide+dislocation climb). However, for heavily pre-deformed specimens, grain-boundary sliding (GBS) as well as GMD was evident. The GBS rate was found to be most rapid for the microstructure with the thinnest alpha laths/platelets. Softening of heavily deformed material was attributed to a decrease in the internal-strength variable σ* associated with reduced alpha–beta interface strength and to the occurrence of GBS. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - TEMPERATURE KW - STRAINS & stresses (Mechanics) KW - MORPHOLOGY KW - MICROMECHANICS KW - METALLOGRAPHY KW - Deformation mechanisms KW - Dynamic globularization KW - Internal-variable theory KW - Ti–6Al–4V N1 - Accession Number: 10999414; Kim, Jeoung Han 1 Semiatin, S.L. 2 Lee, Chong Soo 1; Email Address: cslee@postech.ac.kr; Affiliation: 1: Center for Advanced Aerospace Materials, Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, South Korea 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Oct2003, Vol. 51 Issue 18, p5613; Subject Term: MICROSTRUCTURE; Subject Term: TEMPERATURE; Subject Term: STRAINS & stresses (Mechanics); Subject Term: MORPHOLOGY; Subject Term: MICROMECHANICS; Subject Term: METALLOGRAPHY; Author-Supplied Keyword: Deformation mechanisms; Author-Supplied Keyword: Dynamic globularization; Author-Supplied Keyword: Internal-variable theory; Author-Supplied Keyword: Ti–6Al–4V; Number of Pages: 14p; Document Type: Article L3 - 10.1016/S1359-6454(03)00426-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10999414&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dai, Liming AU - Patil, Ajeeta AU - Vaia, Richard A. T1 - Surface Modification of Aligned Carbon Nanotubes. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2003/10/20/ VL - 685 IS - 1 M3 - Article SP - 621 EP - 634 PB - American Institute of Physics SN - 0094243X AB - The excellent optoelectronic, mechanical, and thermal properties of carbon nanotubes have made them very attractive for a wide range of potential applications. However, many applications require the growth of aligned carbon nanotubes with desirable surface characteristics. We have developed a simple pyrolytic method for large-scale production of aligned carbon nanotube arrays perpendicular to the substrate. These aligned carbon nanotube arrays can be transferred onto various substrates of particular interest (e.g. conducting substrates for optoelectronic devices) in either a patterned or non-patterned fashion. The well-aligned structure further enables us to prepare aligned coaxial nanowires by electrochemically depositing a concentric layer of an appropriate conducting polymer onto the individual aligned carbon nanotubes and to develop a facile approach for modification of carbon nanotube surfaces via plasma activation, followed by chemical reactions characteristic of the plasma-induced functionalities. These surface modification methods are particularly attractive, as they allow surface characteristics of the aligned carbon nanotubes to be tuned for specific applications while their aligned structure can be largely retained. The surface-modified aligned carbon nanotubes are of great significance to various practical applications, ranging from highly efficient electron emitters to highly sensitive sensors. © 2003 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOTUBES KW - CARBON KW - PYROLYSIS KW - POLYMERS N1 - Accession Number: 11188211; Dai, Liming 1 Patil, Ajeeta 1 Vaia, Richard A. 2; Affiliation: 1: Department of Polymer Engineering College of Polymer Science and Polymer Engineering The University of Akron, Akron, OH 44304-2909, USA. 2: Air Force Research Laboratory Materials and Manufacturing Directorate AFRL/MLBP, Bldg 654, 2941 P St. Wright-Patterson AFB, OH 45433-7750.; Source Info: 2003, Vol. 685 Issue 1, p621; Subject Term: NANOTUBES; Subject Term: CARBON; Subject Term: PYROLYSIS; Subject Term: POLYMERS; Number of Pages: 14p; Document Type: Article L3 - 10.1063/1.1628103 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11188211&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lacy, Seth L. AU - Bernstein, Dennis S. T1 - Identification of FIR Wiener systems with unknown, non-invertible, polynomial non-linearities. JO - International Journal of Control JF - International Journal of Control Y1 - 2003/10/15/ VL - 76 IS - 15 M3 - Article SP - 1500 SN - 00207179 AB - Wiener systems consist of a linear dynamic system whose output is measured through a static non-linearity. In this paper we study the identification of single-input single-output Wiener systems with finite impulse response dynamics and polynomial output non-linearities. Using multi-index notation, we solve a least squares problem to estimate products of the coefficients of the non-linearity and the impulse response of the linear system. We then consider four methods for extracting the coefficients of the non-linearity and impulse response: direct algebraic solution, singular value decomposition, multi-dimensional singular value decomposition and prediction error optimization. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Control is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYNOMIALS KW - NONLINEAR systems KW - ESTIMATION theory N1 - Accession Number: 11093668; Lacy, Seth L. 1; Email Address: seth.lacy@kirtland.af.mil Bernstein, Dennis S. 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, NM 87117, USA. 2: Aerospace Engineering Department, University of Michigan, Ann Arbor, MI 48109, USA.; Source Info: 10/15/2003, Vol. 76 Issue 15, p1500; Subject Term: POLYNOMIALS; Subject Term: NONLINEAR systems; Subject Term: ESTIMATION theory; Number of Pages: 8p; Document Type: Article L3 - IO.1O8O/00207170310001599122 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11093668&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wu, X. AU - Maimon, S. AU - Averett, K.L. AU - Koch, K.L. AU - Wicks, G.W. T1 - Emitter injection efficiency and base transport factor in InAs bipolar transistors. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2003/10/15/ VL - 94 IS - 8 M3 - Article SP - 5423 PB - American Institute of Physics SN - 00218979 AB - The factors affecting the common emitter current gain (β) in InAs bipolar junction transistors (BJTs) have been studied by estimating the base transport factor (α[sub T]) and the emitter injection efficiency (γ). This has been accomplished by employing a specially designed sequence of InAs npn BJTs. α[sub T], γ, and the minority carrier (electrons) diffusion length in the base (L[sub B]) are extracted from measured electrical characteristics by using a simple method. When the emitter doping density is large, the current gain is limited by the base transport factor α[sub T]. The value of L[sub B] in these BJTs is found to be 0.44 μm, which indicates high quality epitaxial material. The analysis developed is a general technique, also applicable to BJTs and heterojunction bipolar transistors in other material systems. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JUNCTION transistors KW - INDIUM arsenide KW - DIFFUSION N1 - Accession Number: 10965153; Wu, X. 1; Email Address: xhwu@pas.rochester.edu Maimon, S. 1,2 Averett, K.L. 1,3 Koch, K.L. 1,2 Wicks, G.W. 1,2; Affiliation: 1: Department of Physics and Astronomy, University of Rochester 2: Institute of Optics, University of Rochester 3: Air Force Research Laboratory; Source Info: 10/15/2003, Vol. 94 Issue 8, p5423; Subject Term: JUNCTION transistors; Subject Term: INDIUM arsenide; Subject Term: DIFFUSION; Number of Pages: 3p; Illustrations: 2 Charts, 1 Graph; Document Type: Article L3 - 10.1063/1.1606851 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10965153&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hammond, Vincent H. AU - Houtz, Marlene D. AU - O’Reilly, James M. T1 - Erratum to ‘Structural relaxation in a bulk metallic glass’ by V.H. Hammond, M.D. Houtz and J.M. O’Reilly: [J. Non-Cryst. Solids 325 (2003) 179–186] JO - Journal of Non-Crystalline Solids JF - Journal of Non-Crystalline Solids Y1 - 2003/10/15/ VL - 328 IS - 1-3 M3 - Correction notice SP - 254 SN - 00223093 N1 - Accession Number: 10864205; Hammond, Vincent H. 1 Houtz, Marlene D. 1 O’Reilly, James M.; Email Address: joreilly@rochester.rr.com; Affiliation: 1: Air Force Research Laboratory, AFRL/MLBP, 2941 P Street, Suite 1, Wright – Patterson AFB, OH 45433-7750, USA; Source Info: Oct2003, Vol. 328 Issue 1-3, p254; Number of Pages: 1p; Document Type: Correction notice L3 - 10.1016/S0022-3093(03)00513-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10864205&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - James Ree, Malcolm AU - Carretta, Thomas R. AU - Earles, James A. T1 - Salvaging construct equivalence through equating JO - Personality & Individual Differences JF - Personality & Individual Differences Y1 - 2003/10/15/ VL - 35 IS - 6 M3 - Article SP - 1293 SN - 01918869 AB - Turban, Sanders, Francis, and Osburn (1989) provided a two-step procedure for selecting a replacement for a currently used test without an expensive validation study. The two steps are confirmatory factor analysis and impact analysis. We evaluated this two-step procedure and found that it was possible to apply it and find that the replacement test was not acceptable. We provide an example of just such a negative outcome that was salvaged by the extra step of equipercentile equating. This step, added to Turban et al., required no additional investment other than an equating analysis on the extant data. We caution that equating does not create construct equivalence, but is a necessary procedure when tests measure identical constructs with differing distributional shapes. [Copyright &y& Elsevier] AB - Copyright of Personality & Individual Differences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FACTOR analysis KW - PSYCHOMETRICS KW - CORRELATION (Statistics) KW - PSYCHOLOGICAL tests KW - Confirmatory factor analysis KW - Construct equivalence KW - Equating KW - Impact analysis N1 - Accession Number: 10721777; James Ree, Malcolm 1; Email Address: reemal@lake.ollusa.edu Carretta, Thomas R. 2 Earles, James A. 3; Affiliation: 1: Our Lady of the Lake University, 411 S.W. 24th Street, San Antonio, TX 78207, USA 2: Air Force Research Laboratory Human Effectiveness Directorate, Wright-Patterson AFB, OH 45433-7511, USA 3: Air Force Occupational Measurement Squadron, Randolph AFB, TX 78150-4449, USA; Source Info: Oct2003, Vol. 35 Issue 6, p1293; Subject Term: FACTOR analysis; Subject Term: PSYCHOMETRICS; Subject Term: CORRELATION (Statistics); Subject Term: PSYCHOLOGICAL tests; Author-Supplied Keyword: Confirmatory factor analysis; Author-Supplied Keyword: Construct equivalence; Author-Supplied Keyword: Equating; Author-Supplied Keyword: Impact analysis; Number of Pages: 13p; Document Type: Article L3 - 10.1016/S0191-8869(02)00350-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10721777&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ganguli, Sabyasachi AU - Dean, Derrick AU - Jordan, Kelvin AU - Price, Gary AU - Vaia, Richard T1 - Chemorheology of cyanate ester—organically layered silicate nanocomposites JO - Polymer JF - Polymer Y1 - 2003/10/15/ VL - 44 IS - 22 M3 - Article SP - 6901 SN - 00323861 AB - The effect of nanoparticle addition on the flow and curing behavior of a phenolic triazine cyanate ester resin system has been studied using chemorheological, thermal and spectroscopic techniques. While the neat system exhibited Newtonian flow, the nanodispersed prepolymer exhibited pseudoplastic flow behavior, typical of polymeric fluids such as gels and pastes. Evolution of the morphology during curing has been found to be dependent on the rate of intergallery diffusion of the prepolymer and subsequent gelation and vitrification, as well as the intra and extragallery cure kinetics. Curing reactions of the cyanate ester nanocomposite system consisting of a di-functional phenol, a halogen cyanate and organically layered silicates were studied. Gel times were measured as a function of temperature by time sweeps on a controlled stress rheometer. Gelation and vitrification times and activation energies for the nanocomposite systems were lower than that of the neat resins, indicating a catalytic effect of the clays on the curing reaction. Curing kinetics experiments performed on DSC and FTIR confirmed this phenomenon. Based on above experiments, time–temperature-transformation diagrams for the different systems were constructed. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ESTERS KW - SILICATES KW - CURING KW - SPECTRUM analysis KW - FLUID mechanics KW - GELATION KW - Chemorheology KW - Polymer–clay nanocomposites KW - Silicate nanocomposites N1 - Accession Number: 11255685; Ganguli, Sabyasachi 1 Dean, Derrick 1; Email Address: deand@tusk.edu Jordan, Kelvin 2 Price, Gary 3 Vaia, Richard 4; Affiliation: 1: Tuskegee-Center for Advanced Materials, Tuskegee University, 101 Chappie James Center, Tuskegee, AL 36088, USA 2: Raytheon Electronic Systems, Tuscon, AZ, USA 3: University of Dayton Research Institute, Dayton, OH, USA 4: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, Dayton, OH, USA; Source Info: Oct2003, Vol. 44 Issue 22, p6901; Subject Term: ESTERS; Subject Term: SILICATES; Subject Term: CURING; Subject Term: SPECTRUM analysis; Subject Term: FLUID mechanics; Subject Term: GELATION; Author-Supplied Keyword: Chemorheology; Author-Supplied Keyword: Polymer–clay nanocomposites; Author-Supplied Keyword: Silicate nanocomposites; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.polymer.2003.08.031 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11255685&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haugan, T. AU - Barnes, P.N. AU - Brunke, L. AU - Maartense, I. AU - Murphy, J. T1 - Effect of O2 partial pressure on YBa2Cu3O7−δ thin film growth by pulsed laser deposition JO - Physica C JF - Physica C Y1 - 2003/10/08/ VL - 397 IS - 1/2 M3 - Article SP - 47 SN - 09214534 AB - YBa2Cu3O7−δ thin films were processed by pulsed laser deposition on (1 0 0) LaAlO3 substrates using O2 partial pressures from 120 to 1200 mTorr. The effect of O2 pressure on film properties including room temperature resistivities and microstructures was studied for a unique set of deposition parameters. The film quality was observed to remain high over a wide range of O2 partial pressures, with much less sensitivity to O2 pressure than previous studies which are compared. For O2 pressures from 200 to 1200 mTorr, superconducting transition temperatures consistently reached values >91.5 K and transport critical current densities were 3–5 MA/cm2 (77 K, self-field). It is proposed that less sensitivity of film properties to O2 pressure is achieved by: (1) reducing the particle velocity of the plume below a critical threshold, and (2) using a deposition temperature of 785 °C for adequate surface activation. [Copyright &y& Elsevier] AB - Copyright of Physica C is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - PULSED laser deposition KW - MICROSTRUCTURE KW - SUPERCONDUCTING composites KW - HTS thin films KW - Oxygen pressure KW - Pulsed laser deposition KW - YBa2Cu3O7−δ N1 - Accession Number: 10903914; Haugan, T.; Email Address: timothy.haugan@wpafb.af.mil Barnes, P.N. 1 Brunke, L. 1 Maartense, I. 1 Murphy, J. 1; Affiliation: 1: Air Force Research Laboratory, 2645 Fifth St. Ste. 13, Wright-Patterson AFB, OH 45433-7919, USA; Source Info: Oct2003, Vol. 397 Issue 1/2, p47; Subject Term: THIN films; Subject Term: PULSED laser deposition; Subject Term: MICROSTRUCTURE; Subject Term: SUPERCONDUCTING composites; Author-Supplied Keyword: HTS thin films; Author-Supplied Keyword: Oxygen pressure; Author-Supplied Keyword: Pulsed laser deposition; Author-Supplied Keyword: YBa2Cu3O7−δ; Number of Pages: 11p; Document Type: Article L3 - 10.1016/S0921-4534(03)01088-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10903914&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - He, Guang S. AU - Tzu-Chau Lin AU - Hsiao, Vincent K.S. AU - Cartwright, Alexander N. AU - Prasad, Paras N. AU - Natarajan, L.V. AU - Tondiglia, V.P. AU - Jakubiak, R. AU - Vaia, R.A. AU - Bunning, T.J. T1 - Tunable two-photon pumped lasing using a holographic polymer-dispersed liquid-crystal grating as a distributed feedback element. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2003/10/06/ VL - 83 IS - 14 M3 - Article SP - 2733 PB - American Institute of Physics SN - 00036951 AB - A holographic polymer-dispersed liquid-crystal (H-PDLC) grating film was employed as an angle-dependent and narrow spectral-band feedback control element for two-photon pumped lasing in a dye solution, 4-[N-(2-hydroxyethyl)-N-(methyl)amino phenyl]-4′-(6-hydroxyhexyl sulfonyl) stilbene (APSS) in dimethyl sulphoxide. The grating film contained about 80 layers of liquid-crystal domains periodically dispersed in an ∼15 μm thick polymer film, featuring a maximum reflectance of 75% at 561 nm position with an ∼9 nm spectral bandwidth. The output lasing wavelength could be tuned from 561.5 to 548.5 nm and the lasing bandwidth changed from 5 to 3 nm when the incidence angle on the grating film varied from 0° to 22°. The overall lasing efficiency was measured to be 10%. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTONICS KW - LASERS KW - LIQUID crystals KW - POLYMERS N1 - Accession Number: 10964916; He, Guang S. 1; Email Address: gshe@acsu.buffalo.edu Tzu-Chau Lin 1 Hsiao, Vincent K.S. 1 Cartwright, Alexander N. 1 Prasad, Paras N. 1 Natarajan, L.V. 2,3 Tondiglia, V.P. 2 Jakubiak, R. 2 Vaia, R.A. 2 Bunning, T.J. 2; Affiliation: 1: Institute of Lasers, Photonics and Biophotonics, The State University of New York at Buffalo, New York 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force, Ohio 3: Science Applications International Corporation, OH; Source Info: 10/6/2003, Vol. 83 Issue 14, p2733; Subject Term: PHOTONICS; Subject Term: LASERS; Subject Term: LIQUID crystals; Subject Term: POLYMERS; Number of Pages: 3p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article L3 - 10.1063/1.1615315 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10964916&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jasinki, J. AU - Liliental-Weber, Z. AU - Paduano, Q.S. AU - Weybourne, D.W. T1 - Inversion domains in AlN grown on (0001) sapphire. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2003/10/06/ VL - 83 IS - 14 M3 - Article SP - 2811 PB - American Institute of Physics SN - 00036951 AB - Al-polarity inversion domains formed during AlN layer growth on (0001) sapphire were identified using transmission electron microscopy (TEM). They resemble columnar inversion domains reported for GaN films grown on (0001) sapphire. However, for AlN, these columns have a V-like shape with boundaries that deviate by 2°±0.5° from the c axis. TEM identification of these defects agrees with the post-growth surface morphology as well as with the microstructure revealed by etching in hot aqueous KOH. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM nitride KW - SEMICONDUCTORS KW - SAPPHIRES KW - TRANSMISSION electron microscopy N1 - Accession Number: 10964890; Jasinki, J. 1; Email Address: jbjasinski@lbl.gov Liliental-Weber, Z. 1 Paduano, Q.S. 2 Weybourne, D.W. 2; Affiliation: 1: Materials Science Division, Lawrence Berkeley National Laboratory, California 2: Air Force Research Laboratory, Sensors Directorate, Massachusetts; Source Info: 10/6/2003, Vol. 83 Issue 14, p2811; Subject Term: ALUMINUM nitride; Subject Term: SEMICONDUCTORS; Subject Term: SAPPHIRES; Subject Term: TRANSMISSION electron microscopy; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 212398 All other non-metallic mineral mining and quarrying; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 3p; Illustrations: 3 Diagrams; Document Type: Article L3 - 10.1063/1.1616191 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10964890&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alivov, Ya I. AU - Van Nostrand, J.E. AU - Look, D.C. AU - Chukichev, M.V. AU - Ataev, B.M. T1 - Observation of 430 nm electroluminescence from ZnO/GaN heterojunction light-emitting diodes. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2003/10/06/ VL - 83 IS - 14 M3 - Article SP - 2943 PB - American Institute of Physics SN - 00036951 AB - In this work, we report on the growth, fabrication, and device characterization of wide-band-gap heterojunction light-emitting diodes based on the n-ZnO/p-GaN material system. The layer structure is achieved by first growing a Mg-doped GaN film of thickness 1 μm on Al[sub 2]O[sub 3](0001) by molecular-beam epitaxy, then by growing Ga-doped ZnO film of thickness 1 μm by chemical vapor deposition on the p-GaN layer. Room-temperature electroluminescence in the blue-violet region with peak wavelength 430 nm is observed from this structure under forward bias. Light–current characteristics of these light-emitting diodes are reported, and a superlinear behavior in the low current range with a slope 1.9 and a sublinear behavior with a slope 0.85 in the high current range are observed. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIGHT emitting diodes KW - HETEROJUNCTIONS KW - ELECTROLUMINESCENCE KW - ZINC oxide KW - GALLIUM nitride N1 - Accession Number: 10964846; Alivov, Ya I. 1; Email Address: alivov@ipmt-hpm.ac.ru Van Nostrand, J.E. 2; Email Address: joseph.vannostrand@wpafb.af.mil Look, D.C. 3 Chukichev, M.V. 4 Ataev, B.M. 5; Affiliation: 1: Institute of Microelectronics Technology, RAS, Russia 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 3: Semiconductor Research Center, Wright State University, Ohio 4: Department of Physics, M. V. Lomonosov Moscow State University, Russia 5: Institute of Physics, Daghestan Scientific Centre of RAS, Russia; Source Info: 10/6/2003, Vol. 83 Issue 14, p2943; Subject Term: LIGHT emitting diodes; Subject Term: HETEROJUNCTIONS; Subject Term: ELECTROLUMINESCENCE; Subject Term: ZINC oxide; Subject Term: GALLIUM nitride; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; Number of Pages: 3p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article L3 - 10.1063/1.1615308 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10964846&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alberga, Frank AU - Rollman, Michael AU - Boles, David AU - Spencer, David T1 - Logistics Career Broadening Program. JO - Air Force Journal of Logistics JF - Air Force Journal of Logistics Y1 - 2003///Fall2003 VL - 27 IS - 3 M3 - Article SP - 8 EP - 11 PB - Superintendent of Documents SN - 0270403X AB - Discusses the Air Force Logistics Career Broadening Program (LCBP). Program highlights; Duties of career broadening officers; Reasons for becoming an LCBP officer; Benefits of the program for logistics officers. INSET: Program Highlights. KW - CAREER development KW - LOGISTICS KW - PERSONNEL management KW - MILITARY art & science KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 11832086; Alberga, Frank 1 Rollman, Michael 1 Boles, David 1 Spencer, David 1; Affiliation: 1: United States Air Force; Source Info: Fall2003, Vol. 27 Issue 3, p8; Subject Term: CAREER development; Subject Term: LOGISTICS; Subject Term: PERSONNEL management; Subject Term: MILITARY art & science; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 624310 Vocational Rehabilitation Services; NAICS/Industry Codes: 611430 Professional and Management Development Training; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; NAICS/Industry Codes: 541612 Human Resources Consulting Services; NAICS/Industry Codes: 923130 Administration of Human Resource Programs (except Education, Public Health, and Veterans' Affairs Programs); NAICS/Industry Codes: 928110 National Security; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11832086&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shirriff, Adam J. T1 - Transformation of Logistics Career Field. JO - Air Force Journal of Logistics JF - Air Force Journal of Logistics Y1 - 2003///Fall2003 VL - 27 IS - 3 M3 - Article SP - 12 EP - 43 PB - Superintendent of Documents SN - 0270403X AB - Discusses the transformation of logistics career field in the U.S. Processes affected by career-field transformation; Development of the Career Field Education and Training Plan; Number of logistics core competencies a logistics readiness officer needs to earn; Analysis of two competing logistics investments; Advantages of the net present value as a decision rule. KW - LOGISTICS KW - CAREER development KW - INVESTMENTS KW - NET present value KW - OCCUPATIONAL training KW - UNITED States N1 - Accession Number: 11832089; Shirriff, Adam J. 1; Affiliation: 1: United States Air Force; Source Info: Fall2003, Vol. 27 Issue 3, p12; Subject Term: LOGISTICS; Subject Term: CAREER development; Subject Term: INVESTMENTS; Subject Term: NET present value; Subject Term: OCCUPATIONAL training; Subject Term: UNITED States; NAICS/Industry Codes: 624310 Vocational Rehabilitation Services; NAICS/Industry Codes: 611430 Professional and Management Development Training; NAICS/Industry Codes: 523999 Miscellaneous Financial Investment Activities; NAICS/Industry Codes: 523930 Investment Advice; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11832089&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schollars, Todd J. T1 - GERMAN WONDER WEAPONS. JO - Air Force Journal of Logistics JF - Air Force Journal of Logistics Y1 - 2003///Fall2003 VL - 27 IS - 3 M3 - Article SP - 26 EP - 45 PB - Superintendent of Documents SN - 0270403X AB - Examines Germany's failure to mass produce and deploy their wonder weapons. High-technology weapons produced by Germany during World War II; Restrictions and obstacles Germany placed on its industry that affected the production time line of sensitive weapons; Political interference; Reasons why the wonder weapons not have given Germany any advantage. KW - WEAPONS KW - MASS production KW - WEAPONS industry KW - HIGH technology KW - GERMANY -- Politics & government KW - GERMANY N1 - Accession Number: 11832115; Schollars, Todd J. 1; Affiliation: 1: United States Air Force; Source Info: Fall2003, Vol. 27 Issue 3, p26; Subject Term: WEAPONS; Subject Term: MASS production; Subject Term: WEAPONS industry; Subject Term: HIGH technology; Subject Term: GERMANY -- Politics & government; Subject Term: GERMANY; NAICS/Industry Codes: 336414 Guided Missile and Space Vehicle Manufacturing; NAICS/Industry Codes: 332994 Small Arms, Ordnance, and Ordnance Accessories Manufacturing; NAICS/Industry Codes: 336992 Military Armored Vehicle, Tank, and Tank Component Manufacturing; Number of Pages: 12p; Illustrations: 4 Black and White Photographs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11832115&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Condon, Travis E. AU - Patterson, Kirk A. T1 - Supporting Special Operations Forces. JO - Air Force Journal of Logistics JF - Air Force Journal of Logistics Y1 - 2003///Fall2003 VL - 27 IS - 3 M3 - Article SP - 38 EP - 40 PB - Superintendent of Documents SN - 0270403X AB - Presents key issues that may encounter by logisticians when supporting the U.S. Special Operations Command (USSOCOM). Overview of USSOCOM; Funding and acquisition requirements for unit-level and theater joint staff forces; Aspects of special operations forces; Steps to supporting the special operations warrior; Services provided by the Special Operations Forces Support Activity to USSOCOM. KW - LOGISTICS KW - SPECIAL operations (Military science) KW - MILITARY art & science KW - FINANCE KW - UNITED States KW - U.S. Special Operations Command N1 - Accession Number: 11832119; Condon, Travis E. 1 Patterson, Kirk A. 1; Affiliation: 1: United States Air Force; Source Info: Fall2003, Vol. 27 Issue 3, p38; Subject Term: LOGISTICS; Subject Term: SPECIAL operations (Military science); Subject Term: MILITARY art & science; Subject Term: FINANCE; Subject Term: UNITED States; Company/Entity: U.S. Special Operations Command; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; Number of Pages: 3p; Illustrations: 1 Chart; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11832119&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gage, John T1 - Karate Helped Define Logistics. JO - Air Force Journal of Logistics JF - Air Force Journal of Logistics Y1 - 2003///Fall2003 VL - 27 IS - 3 M3 - Article SP - 42 EP - 42 PB - Superintendent of Documents SN - 0270403X AB - Shows the distinction between operations and logistics based on the author's personal research and observation. Definition of logistics; Role of the concept of mind and body in helping the author in defining logistics; Definition of operations; Elements of logistics related to the human body. KW - LOGISTICS KW - OPERATIONS research KW - MIND & body KW - HUMAN body KW - RESEARCH KW - AUTHORS N1 - Accession Number: 11832123; Gage, John 1; Affiliation: 1: United States Air Force; Source Info: Fall2003, Vol. 27 Issue 3, p42; Subject Term: LOGISTICS; Subject Term: OPERATIONS research; Subject Term: MIND & body; Subject Term: HUMAN body; Subject Term: RESEARCH; Subject Term: AUTHORS; NAICS/Industry Codes: 711513 Independent writers and authors; NAICS/Industry Codes: 711510 Independent Artists, Writers, and Performers; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; Number of Pages: 1p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11832123&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coleman, Nicholas V. AU - Spain, Jim C. T1 - Distribution of the Coenzyme M Pathway of Epoxide Metabolism among Ethene- and Vinyl Chloride-Degrading Mycobacterium Strains. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2003/10// VL - 69 IS - 10 M3 - Article SP - 6041 EP - 6046 SN - 00992240 AB - An epoxyalkane:coenzyme M (CoM) transferase (EaCoMT) enzyme was recently found to be active in the aerobic vinyl chloride (VC) and ethene assimilation pathways of Mycobacterium strain JS60. In the present study, EaCoMT activity and genes were investigated in 10 different mycobacteria isolated on VC or ethene from diverse environmental samples. In all cases, epoxyethane metabolism in cell extracts was dependent on CoM, with average specific activities of EaCoMT between 380 and 2,910 nmol/min/mg of protein. PCR with primers based on conserved regions of EaCoMT genes from Mycobacterium strain JS60 and the propene oxidizers Xanthobacter strain Py2 and Rhodococcus strain B-276 yielded fragments (834 bp) of EaCoMT genes from all of the VC- and ethene-assimilating isolates. The Mycobacterium EaCoMT genes form a distinct cluster and are more closely related to the EaCoMT of Rhodococcus strain B-276 than that of Xanthobacter strain Py2. The incongruence of the EaCoMT and 16S RRNA gene trees and the fact that isolates from geographically distant locations possessed almost identical EaCoMT genes suggest that lateral transfer of EaCoMT among the Mycobacterium strains has occurred. Pulsed-field gel electrophoresis revealed large linear plasmids (110 to 330 kb) in all of the VC-degrading strains. In Southern blotting experiments, the strain JS60 EaCoMT gene hybridized to many of the plasmids. The CoM-mediated pathway of epoxide metabolism appears to be universal in alkene-assimilating mycobacteria, possibly because of plasmid-mediated lateral gene transfer. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COENZYMES KW - TRANSFERASES KW - VINYL chloride KW - MYCOBACTERIUM KW - AEROBIC bacteria N1 - Accession Number: 11274429; Coleman, Nicholas V. 1 Spain, Jim C. 1; Email Address: Jim.Spain@tyndall.af.mil; Affiliation: 1: Air Force Research Laboratory—MLQL, Tyndall Air Force Base, Florida; Source Info: Oct2003, Vol. 69 Issue 10, p6041; Subject Term: COENZYMES; Subject Term: TRANSFERASES; Subject Term: VINYL chloride; Subject Term: MYCOBACTERIUM; Subject Term: AEROBIC bacteria; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 6p; Illustrations: 3 Black and White Photographs, 1 Diagram, 1 Chart, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11274429&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - FULLERTON, RICHARD T1 - AN EMPIRICAL ASSESSMENT OF US AIR FORCE. JO - Defence & Peace Economics JF - Defence & Peace Economics Y1 - 2003/10// VL - 14 IS - 5 M3 - Article SP - 343 EP - 355 SN - 10242694 AB - The US Air Force is facing a record shortfall in pilots over the coming decade. Using personnel data on more than 10,000 Air Force pilots, this study examines the factors affecting the retention of pilots and assesses the effectiveness of the pilot bonus programme implemented by the Air Force to reduce attrition. Although surveys indicated sustained deployment rates were the leading cause of job dissatisfaction among Air Force pilots, the results of this study suggest economic factors had the largest impact on retention. [ABSTRACT FROM AUTHOR] AB - Copyright of Defence & Peace Economics is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARMED Forces KW - MILITARY strategy KW - UNITED States KW - Attrition KW - Military Personnel KW - Pilots KW - Retention KW - UNITED States. Air Force N1 - Accession Number: 10466047; FULLERTON, RICHARD 1; Affiliation: 1: Department of Economics and Geography, US Air Force Academy, Colorado 80841, USA; Source Info: Oct2003, Vol. 14 Issue 5, p343; Subject Term: ARMED Forces; Subject Term: MILITARY strategy; Subject Term: UNITED States; Author-Supplied Keyword: Attrition; Author-Supplied Keyword: Military Personnel; Author-Supplied Keyword: Pilots; Author-Supplied Keyword: Retention; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10466047&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hong, L. AU - Cong, S. AU - Wicker, D. T1 - Multirate interacting multiple model (MRIMM) filtering with out-of-sequence GMTI data. JO - IEE Proceedings -- Radar, Sonar & Navigation JF - IEE Proceedings -- Radar, Sonar & Navigation Y1 - 2003/10// VL - 150 IS - 5 M3 - Article SP - 333 EP - 343 PB - Institution of Engineering & Technology SN - 13502395 AB - A multirate approach is developed for incorporating an out-of-sequence (OOS) measurement into a current estimate. There are two major steps in OOS filtering: retrospection from current time to OOS time and updating the current estimate with the OOS measurement, which imposes a high computation and memory burden on implementing OOS filtering. The multirate approach provides an excellent framework for efficient information retrospection and forward updating. A multirate interacting multiple model (MRIMM) filter is developed to track a target with or without manoeuvring behaviour in an environment of out-of-sequence measurement reporting. [ABSTRACT FROM AUTHOR] AB - Copyright of IEE Proceedings -- Radar, Sonar & Navigation is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FILTERS (Mathematics) KW - ESTIMATION theory KW - BEHAVIOR N1 - Accession Number: 11451121; Hong, L. 1 Cong, S. 1 Wicker, D. 2; Affiliation: 1: Department of Electrical Engineering, Wright State University, Dayton, OH, USA 2: Target Recognition Branch, Air Force Research Laboratory, Wright-Patterson AF, OH, USA; Source Info: Oct2003, Vol. 150 Issue 5, p333; Subject Term: FILTERS (Mathematics); Subject Term: ESTIMATION theory; Subject Term: BEHAVIOR; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11451121&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nikulin, Vladimir V. AU - Bouzoubaa, Mounir AU - Skormin, Victor A. AU - Busch, Timothy E. T1 - Lyapunov-Based Decentralized Adaptive Control for Laser Beam Tracking Systems. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2003/10// VL - 39 IS - 4 M3 - Article SP - 1191 EP - 1200 SN - 00189251 AB - A successful controller design is crucial for establishing and maintaining in optical link between free-space communication stations engaged in a laser communication session. This task is quite difficult due to nonlinear behavior, cross-coupled dynamics, and time-varying characteristics of all known beam steering technologies. A novel adaptive control technique utilizing Lyapunov function to ensure global asymptotic stability of the system, thus resulting in a highly robust system performance, is developed. The technique applied to a piezo-electric mirror setup results in a highly efficient controller design that does not require prior knowledge of system dynamics, while providing independent access to azimuth and elevation positions of the laser beam. The basic algorithm is presented and the results of its application are demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LYAPUNOV functions KW - DIFFERENTIAL equations KW - CONTROL theory (Mathematics) KW - TRACKING radar KW - LASER beams KW - PIEZOELECTRICITY KW - MIRRORS N1 - Accession Number: 12437842; Nikulin, Vladimir V. 1; Email Address: vnikulin@binghamton.edu Bouzoubaa, Mounir 1 Skormin, Victor A. 1 Busch, Timothy E. 2; Affiliation: 1: Laser Communication Research Laboratory, Binghamton University, Binghamton, NY 13902. 2: Air Force Research Laboratory, Rome, NY 03441-4505.; Source Info: Oct2003, Vol. 39 Issue 4, p1191; Subject Term: LYAPUNOV functions; Subject Term: DIFFERENTIAL equations; Subject Term: CONTROL theory (Mathematics); Subject Term: TRACKING radar; Subject Term: LASER beams; Subject Term: PIEZOELECTRICITY; Subject Term: MIRRORS; NAICS/Industry Codes: 238150 Glass and Glazing Contractors; NAICS/Industry Codes: 327215 Glass Product Manufacturing Made of Purchased Glass; NAICS/Industry Codes: 414390 Other home furnishings merchant wholesalers; NAICS/Industry Codes: 423220 Home Furnishing Merchant Wholesalers; NAICS/Industry Codes: 517919 All Other Telecommunications; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12437842&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pasala, Krishna AU - Penno, Robert AU - Schneider, Stephen T1 - Novel Wideband Multimode Hybrid Interferometer System. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2003/10// VL - 39 IS - 4 M3 - Article SP - 1396 EP - 1406 SN - 00189251 AB - In this paper, a novel hybrid of a three-element interferometer comprised of multimode antennas is analyzed. The phase ambiguities associated with the long baselines of the interferometer are resolved using the "coarse" angle estimates provided by the multimode antenna. This results in the elimination of the short baseline interferometers of the conventional five-element interferometer. It is shown here that the signal-to-noise ratio (SNR) must be above a threshold value to resolve the phase ambiguities with a high degree of probability. An expression that shows the dependence of this threshold SNR on the interferometer spacing and the variance of the angle estimates provided by the multimode antenna is derived. A single three-element wideband multimode antenna interferometer can replace several five-element conventional interferometers, each covering a separate frequency band. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTERFEROMETERS KW - HYBRID computer simulation KW - RADAR -- Antennas KW - ANTENNAS (Electronics) KW - FREQUENCY changers KW - FREQUENCY discriminators N1 - Accession Number: 12437856; Pasala, Krishna 1; Email Address: Krishna.Pasala@notes.udayton.edu Penno, Robert 1; Email Address: Robert.Pemjo@notes.udayton.edu Schneider, Stephen 2; Email Address: Stephen.Schneider@afrl.of.mil; Affiliation: 1: University of Dayton, 300 College Park, Dayton. 2: United States Air Force, AFRL/SN, Wright-Patterson Air Force.; Source Info: Oct2003, Vol. 39 Issue 4, p1396; Subject Term: INTERFEROMETERS; Subject Term: HYBRID computer simulation; Subject Term: RADAR -- Antennas; Subject Term: ANTENNAS (Electronics); Subject Term: FREQUENCY changers; Subject Term: FREQUENCY discriminators; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 333310 Commercial and service industry machinery manufacturing; NAICS/Industry Codes: 333314 Optical Instrument and Lens Manufacturing; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12437856&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ping Xiong, James H. AU - Medley, Michael J. AU - Batalama, Stella N. T1 - Spatial and. Temporal Processing for Global. Navigation Satellite Systems: The GPS Receiver Paradigm. JO - IEEE Transactions on Aerospace & Electronic Systems JF - IEEE Transactions on Aerospace & Electronic Systems Y1 - 2003/10// VL - 39 IS - 4 M3 - Article SP - 1471 EP - 1484 SN - 00189251 AB - We address the problem of navigation data demodulation by an adaptive GPS receiver that utilizes a bank of single-satellite linear-tap-delay filters and employs antenna-array reception. The presence of an antenna array allows the receiver to operate in the spatial domain in addition to the temporal (code) domain. We investigate disjoint-domain as well as joint-domain space-time GPS signal processing techniques and we consider design criteria of conventional matched-filter (MF) type, minimum-mean-square-error (MMSE), minimum-variance-distortionless-response (MVDR) type and auxiliary-vector (AV) type. The proposed structures utilize filters that operate at a fraction of the navigation data bit period (1 ms) and are follows by hard-decision detectors. Hard decisions taken over a navigation data bit period (20 ms) are then combined according to a simple combining rule for further bit-error-rate (BER) performance improvements. Analytic, numerical, and simulation comparisons illustrate the relative merits of the investigated receiver design alternatives. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARTIFICIAL satellites in telecommunication KW - ARTIFICIAL satellites KW - NAVIGATION (Aeronautics) KW - AERONAUTICS KW - ANTENNAS (Electronics) KW - ANTENNA arrays KW - SIMULATION methods & models N1 - Accession Number: 12437864; Ping Xiong, James H. 1 Medley, Michael J. 2 Batalama, Stella N. 1; Email Address: batalama@eng.buffalo.edu; Affiliation: 1: Department of Electrical Engineering State University of New York, Buffalo, NY, USA. 2: Air Force Research Laboratory, IFGC, Broks Road, Rome, NY.; Source Info: Oct2003, Vol. 39 Issue 4, p1471; Subject Term: ARTIFICIAL satellites in telecommunication; Subject Term: ARTIFICIAL satellites; Subject Term: NAVIGATION (Aeronautics); Subject Term: AERONAUTICS; Subject Term: ANTENNAS (Electronics); Subject Term: ANTENNA arrays; Subject Term: SIMULATION methods & models; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 238290 Other Building Equipment Contractors; NAICS/Industry Codes: 238299 All other building equipment contractors; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 927110 Space Research and Technology; NAICS/Industry Codes: 517410 Satellite Telecommunications; Number of Pages: 14p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12437864&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lin Cheng AU - Steckl, Andrew J. AU - Scotfield, James T1 - SiC Thin-film Fabry—Perot Interferometer for Fiber-Optic Temperature Sensor. JO - IEEE Transactions on Electron Devices JF - IEEE Transactions on Electron Devices Y1 - 2003/10// VL - 50 IS - 10 M3 - Article SP - 2159 EP - 2164 SN - 00189383 AB - Polycrystalline SiC grown on single-crystal sapphire substrates have been investigated as thin-film Fabry-Perot interferometers for fiber-optic temperature measurements in harsh temperatures. SiC-based temperature sensors are compact in size, robust, and stable at high temperatures, making them one of the best choices for high temperature applications. SiC films with thickness of about 0.5-2.0 µm were grown at 1100 °C by chemical vapor deposition (CVD) with trimethylsilane. The effect of operating temperature on the shifts in resonance minima, δλ[sub m], of the SiC/sapphire substrate has been measured in the visible-infrared wavelength range. A temperature sensitivity of 1.0 × 10[sup -5]/°C is calculated using the minimum at ∼700 nm. Using a white, broadband light source, a temperature accuracy of ±3.5°C is obtained over the temperature range of 22 °C to 540 °C. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Electron Devices is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON carbide KW - THIN films N1 - Accession Number: 11087442; Lin Cheng 1 Steckl, Andrew J. 1 Scotfield, James 2; Affiliation: 1: Nanoelectronics Laboratory, University of Cincinnati 2: Air Force Research Laboratory, Wright-Patterson Air Force Base; Source Info: Oct2003, Vol. 50 Issue 10, p2159; Subject Term: SILICON carbide; Subject Term: THIN films; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 6p; Illustrations: 4 Black and White Photographs, 2 Diagrams, 7 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11087442&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Szmulowicz, F. AU - Ehret, J. AU - Mahalingam, K. AU - Hegde, S. AU - Solomon, J. AU - Tomich, D.H. AU - Landis, G. AU - Brown, G.J. AU - Oogarah, T. AU - Liu, H.C. T1 - Overcoming absorption saturation with doping in p-type quantum well infrared photodetectors: modeling and experiment JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2003/10// VL - 44 IS - 5/6 M3 - Article SP - 331 SN - 13504495 AB - Bound-to-continuum normal-incidence absorption in p-type GaAs/AlGaAs quantum well infrared photodetectors (QWIPs) is strongest when the second light-hole (LH2) level is resonant with the top of the valence band QW. However, we found that such absorption saturates as a function of doping in the well. Using the envelope-function model (EFA), this paper shows that moving the LH2 resonance slightly deeper into the continuum avoids absorption saturation and produces optimal p-QWIP response. A suitable set of mid-IR samples was grown to test this conjecture and their photoresponse measured. The results indicate that absorption can be more than doubled through the use of the new p-QWIP designs. This result is explained by showing that the line of resonances in the continuum as a function of the in-plane wave vector eventually becomes a bound LH2 band in the well at some critical wave vector. Therefore, it is possible to avoid absorption saturation by matching this critical wave vector (i.e., well width and/or well depth) with the Fermi wave vector (i.e., doping in the well) for the desired QWIP (i.e., cutoff wavelength). [Copyright &y& Elsevier] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSORPTION KW - OPTICAL resonance KW - QUANTUM wells KW - Absorption KW - Infrared detector KW - p-Type KW - Photoresponse KW - Quantum well N1 - Accession Number: 11002764; Szmulowicz, F. 1; Email Address: frank.szmulowicz@wpafb.af.mil Ehret, J. 1 Mahalingam, K. 1 Hegde, S. 1 Solomon, J. 1 Tomich, D.H. 1 Landis, G. 1 Brown, G.J. 1 Oogarah, T. 2 Liu, H.C. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7707,USA 2: Institute for Microstructural Sciences, National Research Council, Ottawa, Ont., Canada K1A 0R6; Source Info: Oct2003, Vol. 44 Issue 5/6, p331; Subject Term: ABSORPTION; Subject Term: OPTICAL resonance; Subject Term: QUANTUM wells; Author-Supplied Keyword: Absorption; Author-Supplied Keyword: Infrared detector; Author-Supplied Keyword: p-Type; Author-Supplied Keyword: Photoresponse; Author-Supplied Keyword: Quantum well; Number of Pages: 6p; Document Type: Article L3 - 10.1016/S1350-4495(03)00152-X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11002764&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gadir, M.A. AU - Harrison, P. AU - Soref, R.A. T1 - Modeling the capture probability and enhancing the photoconductive gain in quantum well infrared photodetectors (QWIPs) JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2003/10// VL - 44 IS - 5/6 M3 - Article SP - 481 SN - 13504495 AB - In this work consideration is given to the dynamics of carriers in the continuum/quantum well systems and how this relates to the photoconductive gain of quantum well infrared photodetectors. In particular the quantum mechanical scattering theory approach, taking into account e-LO phonon and e–e scattering is invoked to evaluate the capture probability from the continuum into the quantum wells. It is shown that the capture probability Pc is dependent on the quantum well width. The capture probability microscopic model is then utilized to introduce an additional tunnel barrier to disturb the continuum levels near the top of the quantum well. This induction enabled us to investigate the double-barrier improvements in the photoconductive gain. [Copyright &y& Elsevier] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM wells KW - PROBABILITY theory KW - LIGHT -- Scattering KW - PHOTOCONDUCTIVITY KW - Capture probability KW - Continuum KW - Photoconductive gain KW - Scattering KW - Tunneling barrier N1 - Accession Number: 11002782; Gadir, M.A. 1; Email Address: eenmag@leeds.ac.uk Harrison, P. 1 Soref, R.A. 2; Affiliation: 1: Institute of Microwaves and Photonics, School of Electronic and Electrical Engineering, The University of Leeds, Leeds LS2 9JT, UK 2: Sensors Directorate, AFRL/SNHC, Air Force Research Laboratory, Hanscom Air Force Base, MA 01731, USA; Source Info: Oct2003, Vol. 44 Issue 5/6, p481; Subject Term: QUANTUM wells; Subject Term: PROBABILITY theory; Subject Term: LIGHT -- Scattering; Subject Term: PHOTOCONDUCTIVITY; Author-Supplied Keyword: Capture probability; Author-Supplied Keyword: Continuum; Author-Supplied Keyword: Photoconductive gain; Author-Supplied Keyword: Scattering; Author-Supplied Keyword: Tunneling barrier; Number of Pages: 5p; Document Type: Article L3 - 10.1016/S1350-4495(03)00168-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11002782&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Huang, Danhong AU - Cardimona, D.A. T1 - Physics of non-adiabatic transport and field-domain effect in quantum-well infrared photodetectors JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2003/10// VL - 44 IS - 5/6 M3 - Article SP - 487 SN - 13504495 AB - A previous theory for studying the distribution of non-uniform fields in multiple-quantum-well photodetectors under an ac voltage is generalized by including non-adiabatic space-charge-field effects. Numerical calculations indicate that field-domain effects are only important at high temperatures or high voltages when both injection and sequential-tunneling currents are significant. On the other hand, it is found that the non-adiabatic effects included in this generalized theory become significant at low temperatures and low voltages when field-domain effects are negligible. In order to explain the non-adiabatic charge-density fluctuations quantum-statistically, a non-adiabatic differential equation is derived based on the self-consistent Hartree model by using a shifted Fermi–Dirac model for the local fluctuation of electron distributions. The non-adiabatic effect is found to cause an “equilibrium” state variation with time under an ac voltage. [Copyright &y& Elsevier] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM wells KW - MAGNETIC fields KW - DIFFERENTIAL equations KW - ELECTRON distribution KW - Distribution KW - Domain KW - Hartree KW - Non-adiabatic KW - Quantum-well KW - Tunneling N1 - Accession Number: 11002783; Huang, Danhong; Email Address: danhong.huang@kirtland.af.mil Cardimona, D.A. 1; Affiliation: 1: Air Force Research Laboratory, VSSS, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117, USA; Source Info: Oct2003, Vol. 44 Issue 5/6, p487; Subject Term: QUANTUM wells; Subject Term: MAGNETIC fields; Subject Term: DIFFERENTIAL equations; Subject Term: ELECTRON distribution; Author-Supplied Keyword: Distribution; Author-Supplied Keyword: Domain; Author-Supplied Keyword: Hartree; Author-Supplied Keyword: Non-adiabatic; Author-Supplied Keyword: Quantum-well; Author-Supplied Keyword: Tunneling; Number of Pages: 15p; Document Type: Article L3 - 10.1016/S1350-4495(03)00170-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11002783&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Le, D.T. AU - Morath, C.P. AU - Norton, H.E. AU - Cardimona, D.A. AU - Raghavan, S. AU - Rotella, P. AU - Stintz, S.A. AU - Fuchs, B. AU - Krishna, S. T1 - High responsivity, LWIR dots-in-a-well quantum dot infrared photodetectors JO - Infrared Physics & Technology JF - Infrared Physics & Technology Y1 - 2003/10// VL - 44 IS - 5/6 M3 - Article SP - 517 SN - 13504495 AB - In this paper we report studies on normal incidence, InAs/In0.15Ga0.85As quantum dot infrared photodetectors (QDIPs) in the dots-in-a-well (DWELL) configuration. Three QDIP structures with similar dot and well dimensions were grown and devices were fabricated from each wafer. Of the three devices studied, the first served as the control, the second was grown with an additional 400 A˚ AlGaAs blocking layer, and the third was grown on a GaAs n+ substrate with the intention of testing a single pass geometry. Spectral measurements on all three devices show one main peak in the long-wave IR (≈8 μm). The absorption was attributed to the bound-to-bound transition between the ground state of the InAs quantum dot and the ground state of the In0.15Ga0.85As well. Calibrated peak responsivity and peak detectivity measurements were performed on each device at 40, 60, and 80 K. For the same temperatures, frequency response measurements from ∼20 Hz to 4 kHz at a bias of Vb=−1 V were also performed. The addition of the blocking layer was shown to slightly enhance responsivity, which peaked at ∼2.4 A/W at 77 K, Vb=−1 V and responsivity was observed to be significantly reduced in the single pass (n+ substrate) sample. The rolloff of the frequency response was observed to be heavily dependent on temperature, bias, and irradiance. The results from the characterization of each sample are reported and discussed. [Copyright &y& Elsevier] AB - Copyright of Infrared Physics & Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM dots KW - GALLIUM arsenide KW - INFRARED radiation KW - INDIUM KW - DWELL KW - Photodetectors KW - QDIP KW - Quantum dots N1 - Accession Number: 11002788; Le, D.T. 1; Email Address: dang.le@kirtland.af.mil Morath, C.P. 1 Norton, H.E. 1 Cardimona, D.A. 1 Raghavan, S. 2 Rotella, P. 2 Stintz, S.A. 2 Fuchs, B. 2 Krishna, S. 2; Affiliation: 1: Air Force Research Laboratory, AFRL/VSSS, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117, USA 2: Center for High Technology Materials, University of New Mexico, Albuquerque, NM 87131, USA; Source Info: Oct2003, Vol. 44 Issue 5/6, p517; Subject Term: QUANTUM dots; Subject Term: GALLIUM arsenide; Subject Term: INFRARED radiation; Subject Term: INDIUM; Author-Supplied Keyword: DWELL; Author-Supplied Keyword: Photodetectors; Author-Supplied Keyword: QDIP; Author-Supplied Keyword: Quantum dots; Number of Pages: 10p; Document Type: Article L3 - 10.1016/S1350-4495(03)00171-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11002788&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mayhew, James E. AU - Baughn, James W. AU - Byerley, Aaron R. T1 - The effect of freestream turbulence on film cooling adiabatic effectiveness JO - International Journal of Heat & Fluid Flow JF - International Journal of Heat & Fluid Flow Y1 - 2003/10// VL - 24 IS - 5 M3 - Article SP - 669 SN - 0142727X AB - The film-cooling performance of a flat plate in the presence of low and high freestream turbulence is investigated using liquid crystal thermography. This paper contributes high-resolution color images that clearly show how the freestream turbulence spreads the cooling air around a larger area of the film-cooled surface. Distributions of the adiabatic effectiveness are determined over the film-cooled surface of the flat plate using the hue method and image processing. Three blowing rates are investigated for a model with three straight holes spaced three diameters apart, with density ratio near unity. High freestream turbulence is shown to increase the area-averaged effectiveness at high blowing rates, but decrease it at low blowing rates. At low blowing ratio, freestream turbulence clearly reduces the coverage area of the cooling air due to increased mixing with the main flow. However, at high blowing ratio, when much of the jet has lifted off in the low turbulence case, high freestream turbulence turns its increased mixing into an asset, entraining some of the coolant that penetrates into the main flow and mixing it with the air near the surface. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Fluid Flow is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TURBULENCE KW - LIQUID crystals KW - THERMOGRAPHY KW - Adiabatic effectiveness KW - Film cooling KW - Freestream turbulence KW - Liquid crystal N1 - Accession Number: 10571094; Mayhew, James E. 1; Email Address: mayhew@rose-hulman.edu Baughn, James W. 2 Byerley, Aaron R. 3; Affiliation: 1: Department of Mechanical Engineering, Rose-Hulman Institute of Technology, 5500 Wabash Avenue, Terre Haute, IN 47803, USA 2: Mechanical and Aeronautical Engineering, University of California, Davis, CA, USA 3: Department of Aeronautics, US Air Force Academy, Colorado Springs, CO, USA; Source Info: Oct2003, Vol. 24 Issue 5, p669; Subject Term: TURBULENCE; Subject Term: LIQUID crystals; Subject Term: THERMOGRAPHY; Author-Supplied Keyword: Adiabatic effectiveness; Author-Supplied Keyword: Film cooling; Author-Supplied Keyword: Freestream turbulence; Author-Supplied Keyword: Liquid crystal; Number of Pages: 11p; Document Type: Article L3 - 10.1016/S0142-727X(03)00081-X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10571094&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gordnier, Raymond E. AU - Visbal, Miguel R. T1 - Computation of Three-Dimensional Nonlinear Panel Flutter. JO - Journal of Aerospace Engineering JF - Journal of Aerospace Engineering Y1 - 2003/10// VL - 16 IS - 4 M3 - Article SP - 155 EP - 166 PB - American Society of Civil Engineers SN - 08931321 AB - A recently developed three-dimensional viscous aeroelastic solver is applied to the solution of nonlinear panel flutter. The solution scheme implicitly couples a well validated Navier-Stokes code with a finite-difference procedure for the Von Karman plate equations by employing a subiteration strategy. Both low supersonic, M[sub ∞]=1.2, and subsonic, M[sub ∞]=0.95, cases are computed. For the supersonic case, the presence of either a laminar or turbulent boundary layer delays the onset of flutter, with higher flutter dynamic pressures resulting for thicker boundary layers. This effect is much less pronounced when the boundary layers are turbulent. In the subsonic case multiple solutions are obtained. The downwardly divergent solution displays a very complex interaction between the laminar boundary layer and the flexible panel that results in significant acoustic radiation from the vibrating panel. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Aerospace Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLATES (Engineering) KW - FLUTTER (Aerodynamics) KW - NAVIER-Stokes equations KW - VIBRATION (Aeronautics) KW - OSCILLATIONS KW - AERODYNAMICS N1 - Accession Number: 10848630; Gordnier, Raymond E. 1 Visbal, Miguel R. 2; Affiliation: 1: Senior Research Aerospace Engineer, Air Force Research Laboratory, AFRL/VAAC Building 146, Room 225, 2210 Eighth St., Wright-Patterson AFB, OH 45433-7512. 2: Technical Area Leader, Air Force Research Laboratory, AFRL/VAAC Building 146, Room 225, 2210 Eighth St., Wright-Patterson AFB, OH 45433-7512.; Source Info: Oct2003, Vol. 16 Issue 4, p155; Subject Term: PLATES (Engineering); Subject Term: FLUTTER (Aerodynamics); Subject Term: NAVIER-Stokes equations; Subject Term: VIBRATION (Aeronautics); Subject Term: OSCILLATIONS; Subject Term: AERODYNAMICS; NAICS/Industry Codes: 332313 Plate Work Manufacturing; Number of Pages: 12p; Document Type: Article L3 - 10.1061/(ASCE)0893-1321(2003)16:4(155) UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10848630&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Strzhemechny, Yuri M. AU - Nemergut, John AU - Smith, Phillip F. AU - Bae, Junjik AU - Look, David C. AU - Brilison, Leonard J. T1 - Remote hydrogen plasma processing of ZnO single crystal surfaces. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2003/10//10/1/2003 VL - 94 IS - 7 M3 - Article SP - 4256 PB - American Institute of Physics SN - 00218979 AB - We have studied the effects of remote hydrogen plasma treatment on the defect characteristics in single crystal ZnO. Temperature-dependent (9–300 K) and excitation intensity-dependent photoluminescence spectra reveal that H-plasma exposure of ZnO effectively suppresses the free-exciton transition and redistributes intensities in the bound-exciton line set and two-electron satellites with their phonon replicas. The resultant spectra after hydrogenation exhibit a relative increase in intensity of the I[sub 4] (3.363 eV) peak, thought to be related to a neutral donor bound exciton, and a peak feature at 3.366 eV with a distinctly small thermal activation energy. Hydrogenation also produces a violet 100 meV wide peak centered at ∼3.15 eV. Remote plasma hydrogenation yields similar changes in room-temperature depth-dependent cathodoluminescence spectra: the emission intensity increases with hydrogenation mostly in the violet and near-ultraviolet range. Subsequent annealing at 450 °C within the same plasma environment completely restores both the photoluminescence and cathodoluminescence spectra in the subband gap range. The appearance of another bound-exciton feature at 3.366 eV and a relative intensity increase of the donor-bound exciton at line I[sub 4] with H-plasma exposure, and the reversibility with annealing of the spectral changes, indicate a direct link between hydrogen indiffusion and appearance of a shallow donor. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ZINC oxide KW - HYDROGEN plasmas KW - PHOTOLUMINESCENCE KW - CATHODOLUMINESCENCE N1 - Accession Number: 10848510; Strzhemechny, Yuri M. 1; Email Address: strzherny@ee.eng.ohio-state.edu Nemergut, John 2 Smith, Phillip F. 3 Bae, Junjik 3 Look, David C. 4 Brilison, Leonard J. 1,2,3; Affiliation: 1: Center for Materials Research, The Ohio State University Columbus, Ohio 43210. 2: Department of Electrical Engineering, The Ohio State University, Columbus, Ohio 43210. 3: Department of Physics, The Ohio State University Columbus, Ohio 43210. 4: Air Force Research Laboratory, AFRI/MLPS, Wright-Patterson AFB and Semiconductor Research Center, Wright State University, Dayton, Ohio 45435.; Source Info: 10/1/2003, Vol. 94 Issue 7, p4256; Subject Term: ZINC oxide; Subject Term: HYDROGEN plasmas; Subject Term: PHOTOLUMINESCENCE; Subject Term: CATHODOLUMINESCENCE; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 212231 Lead Ore and Zinc Ore Mining; Number of Pages: 7p; Illustrations: 2 Black and White Photographs, 8 Graphs; Document Type: Article L3 - 10.1063/1.1606859 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10848510&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Reynolds, D. C. AU - Hoelscher, J. AU - Litton, C. W. AU - Collins, T. C. AU - Fitch, R. AU - Via, G. D. AU - Gillespie, J. AU - Crespo, A. AU - Jenkins, T. J. AU - Saxier, A. T1 - Emission and reflection spectra from Al[sub x]Ga[sub 1-x]N/GaN single heterostructures. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2003/10//10/1/2003 VL - 94 IS - 7 M3 - Article SP - 4263 PB - American Institute of Physics SN - 00218979 AB - Emission and reflection spectra from AlGaN/GaN single heterostructures grown on SiC substrates were investigated. Two-dimensional electron gas (2DEG) transitions were observed in both emission and reflection. The transitions are sharp, associated with the excited state of the 2DEG, reflect the conservation of the K-selection rule, and are excitonlike. The transitions are also associated with both the A- and B-valence bands. To verify the origin of the reflection and emission spectra, the top AlGaN layer was removed by reactive ion etching. After etching, only the excitonic reflection and emission spectra associated with GaN were observed. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - REFLECTANCE spectroscopy KW - HETEROSTRUCTURES KW - SPECTRUM analysis N1 - Accession Number: 10848509; Reynolds, D. C. 1,2 Hoelscher, J. 1,2 Litton, C. W. 1 Collins, T. C. 3 Fitch, R. 1 Via, G. D. 1 Gillespie, J. 1 Crespo, A. 1 Jenkins, T. J. 1 Saxier, A. 4; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Ohio 45433. 2: Semiconductor Research Center Wright State Univetsiy, Dayton, Ohio 45435. 3: Oklahoma State University, 203 Whitehurst Hall, Stillwater, Oklahoma 74078. 4: Cre, Incorporated, 4600 Silicon Drive, Durham, North Carolina 27703.; Source Info: 10/1/2003, Vol. 94 Issue 7, p4263; Subject Term: GALLIUM nitride; Subject Term: REFLECTANCE spectroscopy; Subject Term: HETEROSTRUCTURES; Subject Term: SPECTRUM analysis; Number of Pages: 4p; Illustrations: 2 Diagrams, 6 Graphs; Document Type: Article L3 - 10.1063/1.1603954 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10848509&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wei, Yajun AU - Bae, Junjik AU - Gin, Aaron AU - Hood, Andrew AU - razeghi, Manijeh AU - Brown, Gail J. AU - Tidrow, Meimei T1 - High quality type II InAs/GaSb superlattices with cutoff wavelength ∼3.7 μm using interface engineering. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2003/10//10/1/2003 VL - 94 IS - 7 M3 - Article SP - 4720 PB - American Institute of Physics SN - 00218979 AB - We report the most recent advance in the area of type II InAs/GaSb superlattices that have cutoff wavelength of ∼3.7 μm. With Ga[sub x]In[sub 1-x] type interface engineering techniques, the mismatch between the superlattices and the GaSb (001) substrate has been reduced to <0.1%. There is no evidence of dislocations using the best examination tools of x-ray, atomic force microscopy, and transmission electron microscopy. The full width half maximum of the photoluminescence peak at 11 K was ∼4.5 meV using an Ar[sup +] ion laser (514 nm) at fluent power of 140 mW. The integrated photoluminescence intensity was linearly dependent on the fluent laser power from 2.2 to 140 mW at 11 K. The temperature-dependent photoluminescence measurement revealed a characteristic temperature of one T[sub 1]=245 K at sample temperatures below 160 K with fluent power of 70 mW, and T[sub 1]=203 K for sample temperatures above 180 K with fluent power of 70 and 420 mW. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM compounds KW - ATOMIC force microscopy KW - TRANSMISSION electron microscopy KW - PHOTOLUMINESCENCE N1 - Accession Number: 10848436; Wei, Yajun 1 Bae, Junjik 1 Gin, Aaron 1 Hood, Andrew 1 razeghi, Manijeh 1; Email Address: razeghi@ece.northwestern.edu Brown, Gail J. 2 Tidrow, Meimei 3; Affiliation: 1: Center for Quantum Devices, Department of Electrical and Computer Engineering, Northwestern University, Evanston, Illinois 60208 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLPS, Wright-Patterson Air Force Base, Ohio 45433-7707 3: Missile Defense Agency, Alexandria, Virginia 22304; Source Info: 10/1/2003, Vol. 94 Issue 7, p4720; Subject Term: GALLIUM compounds; Subject Term: ATOMIC force microscopy; Subject Term: TRANSMISSION electron microscopy; Subject Term: PHOTOLUMINESCENCE; Number of Pages: 3p; Illustrations: 2 Black and White Photographs, 4 Graphs; Document Type: Article L3 - 10.1063/1.1606506 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10848436&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mogilevsky, Pavel AU - Hay, Randall S. AU - Boakye, Emmanuel E. AU - Keller, Kristen A. T1 - Evolution of Texture in Rhabdophane-Derived Monazite Coatings. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2003/10// VL - 86 IS - 10 M3 - Article SP - 1767 PB - Wiley-Blackwell SN - 00027820 AB - Microstructure and texture development of fiber coatings of rhabdophane-sol-derived monazite was studied. As-deposited textures and orientation relationships during phase transformations were determined by TEM. Monazite coatings had a crystallographic texture relict from that of as-deposited rhabdophane, with layers of rod-shaped particles that changed orientation by 90° across layers. Heat treatment at 1200°C of minicomposites with these coated fibers caused considerable monazite grain coarsening, and disappearance of the texture. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE coatings KW - MONAZITE KW - CRYSTALLOGRAPHY N1 - Accession Number: 11105857; Mogilevsky, Pavel 1 Hay, Randall S. 1 Boakye, Emmanuel E. 1 Keller, Kristen A. 1; Affiliation: 1: Air Force Research Laboratory/MLLN, Wright-Patterson Air Force Base, Ohio; Source Info: Oct2003, Vol. 86 Issue 10, p1767; Subject Term: SURFACE coatings; Subject Term: MONAZITE; Subject Term: CRYSTALLOGRAPHY; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 6p; Illustrations: 14 Black and White Photographs, 1 Diagram; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11105857&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Casebeer, William D. T1 - Opinion: Moral cognition and its neural constituents. JO - Nature Reviews Neuroscience JF - Nature Reviews Neuroscience Y1 - 2003/10// VL - 4 IS - 10 M3 - Article SP - 840 EP - 847 PB - Nature Publishing Group SN - 1471003X AB - Identifying the neural mechanisms of moral cognition is especially difficult. In part, this is because moral cognition taps multiple cognitive sub-processes, being a highly distributed, whole-brain affair. The assumptions required to make progress in identifying the neural constituents of moral cognition might simplify morally salient stimuli to the point that they no longer activate the requisite neural architectures, but the right experiments can overcome this difficulty. The current evidence allows us to draw a tentative conclusion: the moral psychology required by virtue theory is the most neurobiologically plausible. [ABSTRACT FROM AUTHOR] AB - Copyright of Nature Reviews Neuroscience is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COGNITION KW - ETHICS KW - PSYCHOLOGY KW - NEUROBIOLOGY KW - NEUROSCIENCES N1 - Accession Number: 10983541; Casebeer, William D. 1; Affiliation: 1: William D. Casebeer (Major, USAF) is at the US Air Force Academy, HQ USAFA/DFPY, 2354 Fairchild Drive, Suite 1A10, US Air Force Academy, Colorado 80840, USA. William.casebeer@usafa.af.mil; Source Info: Oct2003, Vol. 4 Issue 10, p840; Subject Term: COGNITION; Subject Term: ETHICS; Subject Term: PSYCHOLOGY; Subject Term: NEUROBIOLOGY; Subject Term: NEUROSCIENCES; Number of Pages: 8p; Document Type: Article L3 - 10.1038/nrn1223 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10983541&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sandholt, P.E. AU - Farrugia, C.J. AU - Denig, W.F. AU - Cowley, S.W.H. AU - Lester, M. T1 - Spontaneous and driven cusp dynamics: Optical aurora, particle precipitation, and plasma convection JO - Planetary & Space Science JF - Planetary & Space Science Y1 - 2003/10// VL - 51 IS - 12 M3 - Article SP - 797 SN - 00320633 AB - In this report we describe two different aspects of the dynamical behaviour of the cusp aurora which we refer to as (1) spontaneous and (2) directly driven events, respectively. The first aspect consists of a series of auroral activations/expansions observed during steady interplanetary magnetic field (IMF) and solar wind plasma conditions. This aspect we attribute to reconnection transients at the dayside magnetopause (flux transfer events). Applying a combination of ground and satellite observations, we document the auroral, particle precipitation, plasma convection, and field-aligned current signatures of these events. Emphasis is placed on the spatio-temporal evolution of the auroral and plasma convection events (pulsed ionospheric flows; PIFs) in the cusp ionosphere. Thus, we are able to document the multi-phase association between auroral brightenings/poleward moving auroral forms (PMAFs) and PIFs. Characteristic cusp ion steps (energy versus latitude profile) are observed during north-south traversals of the cusp by spacecraft Polar and DMSP F13 at the time of PMAFs. From the ground-satellite conjunction studies we infer the stepped cusp to be due to the traversal through a sequence of poleward-propagating open flux tubes originating in a pulsed magnetopause reconnection process. The region of the cusp ion steps is shown to be permeated by fine structure in the electron precipitation comprising a broad energy spectrum (30–600 eV). This observation accounts for the long auroral rays, spanning much of the altitude range 120–500 km, which are so typical for the cusp region. The second aspect of cusp dynamics consists of rapid transitions in the auroral configuration which are directly driven by abrupt changes in the external conditions, mainly northward and southward rotations of the IMF vector. Focus is placed on the rapidity of the transitions in the IMF-magnetosphere interconnection topology. The presence of a bifurcated (hybrid) cusp, with 1–5 keV auroral arcs excited at its poleward boundary, is documented during the northward IMF (clock angle range 45–70°) phase of one transition. [Copyright &y& Elsevier] AB - Copyright of Planetary & Space Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR wind KW - MAGNETOSPHERE KW - PLASMA (Ionized gases) KW - Dayside aurora KW - Particle precipitation KW - Plasma convection KW - Solar wind–magnetosphere interaction N1 - Accession Number: 11040828; Sandholt, P.E. 1; Email Address: p.e.sandholt@fys.uio.no Farrugia, C.J. 2 Denig, W.F. 3 Cowley, S.W.H. 4 Lester, M. 4; Affiliation: 1: Department of Physics, University of Oslo, Oslo, Norway 2: Space Science Center, University of New Hampshire, Durham, NC, USA 3: Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA, USA 4: Department of Physics and Astronomy, University of Leicester, Leicester, UK; Source Info: Oct2003, Vol. 51 Issue 12, p797; Subject Term: SOLAR wind; Subject Term: MAGNETOSPHERE; Subject Term: PLASMA (Ionized gases); Author-Supplied Keyword: Dayside aurora; Author-Supplied Keyword: Particle precipitation; Author-Supplied Keyword: Plasma convection; Author-Supplied Keyword: Solar wind–magnetosphere interaction; Number of Pages: 16p; Document Type: Article L3 - 10.1016/S0032-0633(03)00114-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11040828&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Luo, B. AU - Mehandru, R. AU - Kim, Jihyun AU - Ren, F. AU - Gila, B.P. AU - Onstine, A.H. AU - Abernathy, C.R. AU - Pearton, S.J. AU - Gotthold, D. AU - Birkhahn, R. AU - Peres, B. AU - Fitch, R.C. AU - Moser, N. AU - Gillespie, J.K. AU - Jessen, G.H. AU - Jenkins, T.J. AU - Yannuzi, M.J. AU - Via, G.D. AU - Crespo, A. T1 - Improved dc and power performance of AlGaN/GaN high electron mobility transistors with Sc2O3 gate dielectric or surface passivation JO - Solid-State Electronics JF - Solid-State Electronics Y1 - 2003/10// VL - 47 IS - 10 M3 - Article SP - 1781 SN - 00381101 AB - The dc and power characteristics of AlGaN/GaN MOS-HEMTs with Sc2O3 gate dielectrics were compared with that of conventional metal-gate HEMTs fabricated on the same material. The MOS-HEMT shows higher saturated drain–source current (∼0.75 A/mm) and significantly better power-added efficiency (PAE, 27%) relative to the HEMT (∼0.6 A/mm and ∼5%). The Sc2O3 also provides effective surface passivation, with higher drain current, lower leakage currents and higher three-terminal breakdown voltage in passivated devices relative to unpassivated devices. The PAE also increases (from ∼5% to 12%) on the surface passivated HEMTs, showing that Sc2O3 is an attractive option for reducing gate and surface leakage in AlGaN/GaN heterostructure transistors. [Copyright &y& Elsevier] AB - Copyright of Solid-State Electronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRICS KW - TRANSISTORS KW - HETEROSTRUCTURES KW - AlGaN/GaN KW - MOS-HEMT KW - Power-added efficiency KW - Sc2O3 N1 - Accession Number: 10364556; Luo, B. 1 Mehandru, R. 1 Kim, Jihyun 1 Ren, F. 1; Email Address: ren@che.ufl.edu Gila, B.P. 2 Onstine, A.H. 2 Abernathy, C.R. 2 Pearton, S.J. 2 Gotthold, D. 3 Birkhahn, R. 3 Peres, B. 3 Fitch, R.C. 4 Moser, N. 4 Gillespie, J.K. 4 Jessen, G.H. 4 Jenkins, T.J. 4 Yannuzi, M.J. 4 Via, G.D. 4 Crespo, A. 4; Affiliation: 1: Department of Chemical Engineering, University of Florida, P.O. Box 116005, Gainesville, FL 32611, USA 2: Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA 3: EMCORE, Somerset, NJ 08873, USA 4: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Dayton, OH 45433-7322, USA; Source Info: Oct2003, Vol. 47 Issue 10, p1781; Subject Term: DIELECTRICS; Subject Term: TRANSISTORS; Subject Term: HETEROSTRUCTURES; Author-Supplied Keyword: AlGaN/GaN; Author-Supplied Keyword: MOS-HEMT; Author-Supplied Keyword: Power-added efficiency; Author-Supplied Keyword: Sc2O3; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/S0038-1101(03)00138-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10364556&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gillespie, J.K. AU - Fitch, R.C. AU - Moser, N. AU - Jenkins, T. AU - Sewell, J. AU - Via, D. AU - Crespo, A. AU - Dabiran, A.M. AU - Chow, P.P. AU - Osinsky, A. AU - Mastro, M.A. AU - Tsvetkov, D. AU - Soukhoveev, V. AU - Usikov, A. AU - Dmitriev, V. AU - Luo, B. AU - Pearton, S.J. AU - Ren, F. T1 - Uniformity of dc and rf performance of MBE-grown AlGaN/GaN HEMTS on HVPE-grown buffers JO - Solid-State Electronics JF - Solid-State Electronics Y1 - 2003/10// VL - 47 IS - 10 M3 - Article SP - 1859 SN - 00381101 AB - AlGaN/GaN high electron mobility transistors (HEMTs) were grown by molecular beam epitaxy (MBE) on 2 in. diameter GaN buffer layers grown by hydride vapor epitaxy (HVPE) on sapphire substrates. HEMTs with 1 μm gate length displayed excellent dc and rf performance uniformity with up to 258 separate devices measured for each parameter. The drain–source saturation current was 561 mA with a standard deviation of 1.9% over the 2 in. diameter, with a corresponding transconductance of 118 ± 3.9 mS/mm. The threshold voltage was −5.3 ± 0.07 V. The rf performance uniformity was equally good, with an fT of 8.6 ± 0.8 GHz and fmax of 12.8 ± 2.5 GHz. The results show the excellent uniformity of the MBE technique for producing AlGaN/GaN HEMTs and also the ability of HVPE to provide high quality buffers at low cost. [Copyright &y& Elsevier] AB - Copyright of Solid-State Electronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MODULATION-doped field-effect transistors KW - ELECTRON mobility KW - MOLECULAR beam epitaxy KW - GALLIUM nitride N1 - Accession Number: 10364583; Gillespie, J.K. 1 Fitch, R.C. 1 Moser, N. 1 Jenkins, T. 1 Sewell, J. 1 Via, D. 1 Crespo, A. 1 Dabiran, A.M. 2 Chow, P.P. 2 Osinsky, A. 2 Mastro, M.A. 3 Tsvetkov, D. 3 Soukhoveev, V. 3 Usikov, A. 3 Dmitriev, V. 3 Luo, B. 4 Pearton, S.J. 5 Ren, F. 4; Email Address: ren@che.ufl.edu; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Dayton, OH 45433-7322, USA 2: SVT Associates, Eden Prairie, MN 55344, USA 3: TDI, Inc., Silver Spring, MD 20904, USA 4: Department of Chemical Engineering, University of Florida, P.O. Box 116005 Gainesville, FL 32611, USA 5: Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA; Source Info: Oct2003, Vol. 47 Issue 10, p1859; Subject Term: MODULATION-doped field-effect transistors; Subject Term: ELECTRON mobility; Subject Term: MOLECULAR beam epitaxy; Subject Term: GALLIUM nitride; Number of Pages: 4p; Document Type: Article L3 - 10.1016/S0038-1101(03)00140-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10364583&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, X. AU - Goodhue, W.D. AU - Santeufeimio, C. AU - Tetreault, T.G. AU - MacCrimmon, R. AU - Allen, L.P. AU - Bliss, D. AU - Krishnaswami, K. AU - Sung, C. T1 - Gas cluster ion beam processing of gallium antimonide wafers for surface and sub-surface damage reduction JO - Applied Surface Science JF - Applied Surface Science Y1 - 2003/09/30/ VL - 218 IS - 1-4 M3 - Article SP - 251 SN - 01694332 AB - In order to bring low-power epitaxy-based gallium antimonide (GaSb) electronics and electro-optics to market, high-quality GaSb substrates with smooth surfaces and no surface damage are required. Here, a novel final polishing technique, gas cluster ion beam (GCIB) processing, is shown to improve the surface finish of chemical–mechanical polished (CMP) 50 mm (1 0 0) GaSb wafers by etching and smoothing CMP surface atoms through the sub-surface damage. For the first time, a fluorine-based gas cluster ion beam is reported for GCIB surface etching and smoothing of GaSb material. For the selected processing sequence, the surface roughness of a high-quality, 0.70 nm RMS GaSb wafer was reduced to 0.18 nm RMS without any observed changes in the full-widths at half-maximum (FWHM) of the (4 0 0) and (1 1 1) X-ray peaks of 14 and 20 arcsec, respectively. Results indicate that the GCIB process did not contribute to wafer surface or sub-surface polish damage. In a second case, a GCIB etch removed 200 nm of material from a non-optimal CMP (1 0 0) GaSb surface and reduced the full-width at half-maximum (1 1 1) X-ray peak from 76 to 52 arcsec in conjunction with a surface roughness decrease from 0.70 to 0.35 nm RMS. The data suggests that GCIB processing appears to be promising as a final GaSb wafer polish with an etch rate compatible for large scale manufacturing. [Copyright &y& Elsevier] AB - Copyright of Applied Surface Science is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM (Metal) KW - ION bombardment KW - FLUORINE KW - X-rays KW - GaSb substrates KW - GCIB KW - Photovoltaic cell N1 - Accession Number: 10743779; Li, X. 1 Goodhue, W.D. 2; Email Address: william_goodhue@uml.edu Santeufeimio, C. 3 Tetreault, T.G. 3 MacCrimmon, R. 3 Allen, L.P. 3 Bliss, D. 4 Krishnaswami, K. 2 Sung, C. 1; Affiliation: 1: Center for Advanced Material, University of Massachusetts, Lowell, MA 01854, USA 2: Department of Physics, Photonics Center, University of Massachusetts, Lowell, MA 01854, USA 3: Epion Corporation, 37 Manning Road, Billerica, MA 01821, USA 4: Air Force Research Laboratory/SNHC, Hanscom AFB, USA; Source Info: Sep2003, Vol. 218 Issue 1-4, p251; Subject Term: GALLIUM (Metal); Subject Term: ION bombardment; Subject Term: FLUORINE; Subject Term: X-rays; Author-Supplied Keyword: GaSb substrates; Author-Supplied Keyword: GCIB; Author-Supplied Keyword: Photovoltaic cell; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/S0169-4332(03)00681-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10743779&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, S.-H. AU - Reeves, J. M. AU - Wilson, J. C. AU - Hunton, D. E. AU - Viggiano, A. A. AU - Miller, T. M. AU - Ballenthin, J. O. AU - Lait, L R. T1 - Particle Formation by Ion Nucleation in the UpperTroposphere and Lower Stratosphere. JO - Science JF - Science Y1 - 2003/09/26/ VL - 301 IS - 5641 M3 - Article SP - 1886 EP - 1889 PB - American Association for the Advancement of Science SN - 00368075 AB - Unexpectedly high concentrations of ultrafine particles were observed over a wide range of latitudes in the upper troposphere and lower stratosphere. Particle number concentrations and size distributions simulated by a numerical model of ion-induced nucleation, constrained by measured thermodynamic data and observed atmospheric key species, were consistent with the observations. These findings indicate that, at typical upper troposphere and lower stratosphere conditions, particles are formed by this nucleation process and grow to measurable sizes with sufficient sun exposure and low preexisting aerosol surface area. Ion-induced nucleation is thus a globally important source of aerosol particles, potentially affecting cloud formation and radiative transfer. [ABSTRACT FROM AUTHOR] AB - Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TROPOSPHERE KW - STRATOSPHERE KW - NUCLEATION KW - THERMODYNAMICS N1 - Accession Number: 11062470; Lee, S.-H. 1; Email Address: shanlee@du.edu Reeves, J. M. 1 Wilson, J. C. 1 Hunton, D. E. 2 Viggiano, A. A. 2 Miller, T. M. 2 Ballenthin, J. O. 2 Lait, L R. 3; Affiliation: 1: Department of Engineering, University of Denver, Denver, CO 80208, USA. 2: Air Force Research Laboratory, Space Vehicle Directorate, Hanscom Air Force Base, MA 01731, USA. 3: National Aeronautics and Space Administration, Coddard Space Flight Center, Creenbelt, MD 20771, USA.; Source Info: 9/26/2003, Vol. 301 Issue 5641, p1886; Subject Term: TROPOSPHERE; Subject Term: STRATOSPHERE; Subject Term: NUCLEATION; Subject Term: THERMODYNAMICS; Number of Pages: 4p; Illustrations: 4 Graphs; Document Type: Article; Full Text Word Count: 3492 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11062470&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Spowart, Jonathan E. AU - Miracle, Daniel B. T1 - The influence of reinforcement morphology on the tensile response of 6061/SiC/25p discontinuously-reinforced aluminum JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2003/09/25/ VL - 357 IS - 1/2 M3 - Article SP - 111 SN - 09215093 AB - In order to study the effect of particle morphology on the tensile response of discontinuously-reinforced aluminum (DRA), two P/M 6061/SiC/25p materials were fabricated using established powder blending, compaction and extrusion techniques. One of the materials contained abrasive-grade SiC (F-600) whilst the second material was fabricated using a less angular SiC particulate with a lower aspect ratio, selected to give an overall higher bulk density (HBD) in the as-blended form. Care was taken to ensure that each material contained the same size and volume fraction of SiC particles, and that each material experienced an identical processing route. Mechanical testing was completed at ambient temperature, to measure the effect of particle morphology (F-600 vs. HBD) on both the elastic and plastic tensile response of the DRA. Specimens were tested in as-extruded (F), peak-aged (T6) and over-aged heat treatment (OA) conditions. The DRA produced with the HBD reinforcement consistently showed improved tensile elongation over the DRA containing the F-600 reinforcement, with the most significant effect being observed in the as-extruded (F) condition. The Conside`re criterion was used to show that different damage mechanisms may be operating in each material. Extensive microstructural and fractographic analyses were also carried out on the as-processed and as-tested specimens, using optical and electron microscopy. The dominant damage and failure mechanisms in each material are discussed in the light of these results. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Fatigue KW - ALUMINUM KW - METALS -- Extrusion KW - Discontinuously-reinforced aluminum KW - Failure mechanism KW - Particle morphology N1 - Accession Number: 10322441; Spowart, Jonathan E. 1; Email Address: jonathan.spowart@wpafb.af.mil Miracle, Daniel B. 2; Affiliation: 1: U.E.S. Inc., AFRL/MLLM Bldg. 665, 2230, Tenth St., Wright-Patterson AFB, OH 45433, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMD, Wright-Patterson AFB, OH 45433, USA; Source Info: Sep2003, Vol. 357 Issue 1/2, p111; Subject Term: METALS -- Fatigue; Subject Term: ALUMINUM; Subject Term: METALS -- Extrusion; Author-Supplied Keyword: Discontinuously-reinforced aluminum; Author-Supplied Keyword: Failure mechanism; Author-Supplied Keyword: Particle morphology; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; Number of Pages: 13p; Document Type: Article L3 - 10.1016/S0921-5093(03)00244-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10322441&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ren, Weiju AU - Nicholas, Theodore T1 - Notch size effects on high cycle fatigue limit stress of Udimet 720 JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2003/09/25/ VL - 357 IS - 1/2 M3 - Article SP - 141 SN - 09215093 AB - Notch size effects on the high cycle fatigue (HCF) limit stress of Ni-base superalloy Udimet 720 were investigated on cylindrical specimens with three notch sizes of the same stress concentration factor Kt=2.74. The HCF limit stress corresponding to a life of 106 cycles was experimentally determined at a stress ratio of 0.1 and a frequency of 25 Hz at room temperature. The stresses were calculated using finite element analysis (FEA) and the specimens analyzed using scanning electron microscopy (SEM). Test results show that at the same Kt value, notch size can slightly affect the HCF limit stress of U720 when notch root plasticity occurs. FEA and SEM results reveal that the notch size effects are influenced by a complicated combination of the stress and plastic strain fields at the notch tip, the nominal stress, and the effects of prior plastic deformation on fatigue crack initiation. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Fatigue KW - STRAINS & stresses (Mechanics) KW - ELECTRON microscopy KW - High cycle fatigue KW - Ni-base superalloy KW - Stress concentration factor KW - U720, notch N1 - Accession Number: 10322444; Ren, Weiju 1 Nicholas, Theodore; Email Address: theodore.nicholas@udri.udayton.edu; Affiliation: 1: Air Force Research Laboratory, AFRL/MLLN, 2230 Tenth Street, Wright–Patterson Air Force Base, OH 45433-7817, USA; Source Info: Sep2003, Vol. 357 Issue 1/2, p141; Subject Term: METALS -- Fatigue; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ELECTRON microscopy; Author-Supplied Keyword: High cycle fatigue; Author-Supplied Keyword: Ni-base superalloy; Author-Supplied Keyword: Stress concentration factor; Author-Supplied Keyword: U720, notch; Number of Pages: 12p; Document Type: Article L3 - 10.1016/S0921-5093(03)00218-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10322444&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Moukalled, F. AU - Darwish, M. AU - Sekar, B. T1 - A pressure-based algorithm for multi-phase flow at all speeds JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2003/09/20/ VL - 190 IS - 2 M3 - Article SP - 550 SN - 00219991 AB - A new finite volume-based numerical algorithm for predicting incompressible and compressible multi-phase flow phenomena is presented. The technique is equally applicable in the subsonic, transonic, and supersonic regimes. The method is formulated on a non-orthogonal coordinate system in collocated primitive variables. Pressure is selected as a dependent variable in preference to density because changes in pressure are significant at all speeds as opposed to variations in density, which become very small at low Mach numbers. The pressure equation is derived from overall mass conservation. The performance of the new method is assessed by solving the following two-dimensional two-phase flow problems: (i) incompressible turbulent bubbly flow in a pipe, (ii) incompressible turbulent air–particle flow in a pipe, (iii) compressible dilute gas–solid flow over a flat plate, and (iv) compressible dusty flow in a converging diverging nozzle. Predictions are shown to be in excellent agreement with published numerical and/or experimental data. [Copyright &y& Elsevier] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALGORITHMS KW - MULTIPHASE flow KW - SPEED KW - PRESSURE KW - All speed flows KW - Finite volume method KW - Multi-phase flow KW - Pressure-based algorithm N1 - Accession Number: 10741047; Moukalled, F. 1; Email Address: memouk@aub.edu.lb Darwish, M. 1; Email Address: darwish@aub.edu.lb Sekar, B. 2; Email Address: balu.sekar@wpafb.af.mil; Affiliation: 1: Mechanical Engineering Department, Faculty of Engineering and Architecture, American University of Beirut, P.O. Box 11-0236, Riad El Solh, Beirut 1107 2020, Lebanon 2: Air Force Research Laboratory, AFRL/PRTC, Wright–Patterson AFB, OH 45433-7251, USA; Source Info: Sep2003, Vol. 190 Issue 2, p550; Subject Term: ALGORITHMS; Subject Term: MULTIPHASE flow; Subject Term: SPEED; Subject Term: PRESSURE; Author-Supplied Keyword: All speed flows; Author-Supplied Keyword: Finite volume method; Author-Supplied Keyword: Multi-phase flow; Author-Supplied Keyword: Pressure-based algorithm; Number of Pages: 22p; Document Type: Article L3 - 10.1016/S0021-9991(03)00297-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10741047&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kumar, Binod AU - Fellner, J.P. T1 - Polymer–ceramic composite protonic conductors JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2003/09/20/ VL - 123 IS - 2 M3 - Article SP - 132 SN - 03787753 AB - This paper reviews emerging polymer–ceramic composite protonic conductors in the context of their usefulness as membrane material for fuel cells. These composite protonic conductors appear to exhibit a superior propensity to retain water, enhanced conductivity, superior thermal and mechanical robustness, and reduced permeability of molecular species. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - FUEL cells KW - ELECTRIC conductivity KW - Composite membrane KW - Fuel cells KW - PEFC N1 - Accession Number: 10426509; Kumar, Binod 1; Email Address: kumar@udri.udayton.edu Fellner, J.P. 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park, KL 501, Dayton, OH 45469-0170, USA 2: Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Airforce Base, Dayton, OH 45433-7251, USA; Source Info: Sep2003, Vol. 123 Issue 2, p132; Subject Term: POLYMERS; Subject Term: FUEL cells; Subject Term: ELECTRIC conductivity; Author-Supplied Keyword: Composite membrane; Author-Supplied Keyword: Fuel cells; Author-Supplied Keyword: PEFC; Number of Pages: 5p; Document Type: Article L3 - 10.1016/S0378-7753(03)00530-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10426509&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lin, Lanchao AU - Ponnappan, Rengasamy T1 - Heat transfer characteristics of spray cooling in a closed loop JO - International Journal of Heat & Mass Transfer JF - International Journal of Heat & Mass Transfer Y1 - 2003/09/15/ VL - 46 IS - 20 M3 - Article SP - 3737 SN - 00179310 AB - A closed loop spray cooling test setup is established for the cooling of high heat flux heat sources. Eight miniature nozzles in a multi-nozzle plate are used to generate a spray array targeting at a 1 × 2 cm2 cooling surface. FC-87, FC-72, methanol and water are used as the working fluids. Thermal performance data for the multi-nozzle spray cooling in the confined and closed system are obtained at various operating temperatures, nozzle pressure drops (from 0.69 to 3.10 bar) and heat fluxes. It is exhibited that the spray cooler can reach the critical heat fluxes up to 90 W/cm2 with fluorocarbon fluids and 490 W/cm2 with methanol. For water, the critical heat flux is higher than 500 W/cm2. Air purposely introduced in the spray cooling system with FC-72 fluid has a significant influence on heat transfer characteristics of the spray over the cooling surface. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAT transfer KW - TWO-phase flow KW - Heat transfer enhancement KW - Nucleate boiling heat transfer KW - Spray cooling KW - Two-phase flow N1 - Accession Number: 10276533; Lin, Lanchao 1; Email Address: lanchao.lin@afrl.af.mil Ponnappan, Rengasamy 2; Affiliation: 1: Universal Energy Systems, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432-1894, USA 2: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson AFB, OH 45433-7251, USA; Source Info: Sep2003, Vol. 46 Issue 20, p3737; Subject Term: HEAT transfer; Subject Term: TWO-phase flow; Author-Supplied Keyword: Heat transfer enhancement; Author-Supplied Keyword: Nucleate boiling heat transfer; Author-Supplied Keyword: Spray cooling; Author-Supplied Keyword: Two-phase flow; Number of Pages: 10p; Document Type: Article L3 - 10.1016/S0017-9310(03)00217-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10276533&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Danhong Huang, F. AU - Cardimona, D.A. T1 - Effects of classical and quantum charge fluctuations on sequential electron tunneling in multiple quantum wells. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2003/09/15/ VL - 94 IS - 6 M3 - Article SP - 3703 PB - American Institute of Physics SN - 00218979 AB - Reports on the generalization of a theory for studying the distribution of nonuniform fields in multiple-quantum-well photodetectors under an alternating current voltage to include nonadiabatic space-charge-field effects. Prediction of a negative conduction current under a positive voltage due to charge accumulation around the collecting contact. KW - QUANTUM wells KW - SPACE charge N1 - Accession Number: 11026108; Danhong Huang, F. 1; Email Address: danhong.huangd@kirtland.af.mil Cardimona, D.A. 1; Affiliation: 1: Air Force Research Laboratory (AFRL/VSSS), Kirtland Air Force Base, New Mexico; Source Info: 9/15/2003, Vol. 94 Issue 6, p3703; Subject Term: QUANTUM wells; Subject Term: SPACE charge; Number of Pages: 9p; Illustrations: 1 Diagram, 7 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11026108&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jogai, B. AU - Albrecht, J.D. AU - Pan, E. T1 - Effect of electromechanical coupling on the strain in AIGaN/GaN heterojunction field effect transistors. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2003/09/15/ VL - 94 IS - 6 M3 - Article SP - 3984 PB - American Institute of Physics SN - 00218979 AB - Examines the strain in aluminum-gallium nitride (GaN)/GaN heterojunction field-effect transistors in the context of the fully coupled equation of state for piezoelectric materials. Error in the out-of-plane strain obtained without electromechanical coupling in the absence of a two-dimensional electron gas; Support for the analytical results by a self-consistent Schrodinger-Poisson calculation. KW - GALLIUM nitride KW - HETEROJUNCTIONS KW - FIELD-effect transistors KW - PIEZOELECTRIC materials N1 - Accession Number: 11028595; Jogai, B. 1,2; Email Address: brahmanand.jogai@wpafb.af.mil Albrecht, J.D. 3 Pan, E. 4; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 2: Semiconductor Research Center, Wright State University, Ohio 3: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 4: Department of Civil Engineering, The University of Akron, Ohio; Source Info: 9/15/2003, Vol. 94 Issue 6, p3984; Subject Term: GALLIUM nitride; Subject Term: HETEROJUNCTIONS; Subject Term: FIELD-effect transistors; Subject Term: PIEZOELECTRIC materials; Number of Pages: 6p; Illustrations: 1 Diagram, 1 Chart, 5 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11028595&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vaghjiani, Ghanshyam L. T1 - Kinetics of CH radicals with O[sub 2]: Evidence for CO chemiluminescence in the gas phase reaction. JO - Journal of Chemical Physics JF - Journal of Chemical Physics Y1 - 2003/09/15/ VL - 119 IS - 11 M3 - Article SP - 5388 PB - American Institute of Physics SN - 00219606 AB - The production of CO vis-uv-chemiluminescence has been observed for the first time when a trace amount of CHBr[sub 3] vapor was photodecomposed in a pulsed-photolysis reactor using a 248-nm laser under multiphoton-dissociation conditions in an excess of O[sub 2] in diluent helium or argon carrier gas at 298 K and in the pressure range 2–95 Torr. The time-resolved chemiluminescent traces due to vibronic emissions at several band positions in the CO(A–X), CO(a–X), and CO(d–a) systems, and in the (1–0) and (0–0) bands of the OH(A–X) system were observed to decay nonexponentially. Their integrated intensities all showed quadratic dependence on the photolysis fluence employed. The OH and CO chemiluminescence data can be best interpreted by postulating the occurrence of O[sub 2] reactions with the methylidyne radicals in two different electronic states, CH(X [sup 2]Π) and CH(a [sup 4]Σ[sup -]). The production of CO(A) and CO(d) in these reactions require the methylidyne radicals to be internally (vibrationally) excited. The decay kinetics of the chemiluminescence was investigated in the presence of various added substrates, the buffer gas pressure, and in conditions of excess added CH[sub 4], which allowed us to isolate and study the CH(a [sup 4]Σ[sup -])+O[sub 2] reaction, since the CH(X [sup 2]Π) could rapidly be removed from the system. The reactions of highly internally excited brominated radical species such as CBr[sup ♯], CHBr[sup ♯], and CBr[sub 2][sup ♯] with O[sub 2], in principle, can also produce CO chemiluminescence, but are argued to be of negligible importance in the present CHBr[sub 3]/O[sub 2] photolysis system. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Chemical Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DYNAMICS KW - CHEMILUMINESCENCE KW - CARBYNES KW - PHOTOCHEMISTRY N1 - Accession Number: 10691628; Vaghjiani, Ghanshyam L. 1; Affiliation: 1: ERC, Inc., Air Force Research Laboratory AFRL/PRSA, Edwards Air Force Base, California 93524.; Source Info: 9/15/2003, Vol. 119 Issue 11, p5388; Subject Term: DYNAMICS; Subject Term: CHEMILUMINESCENCE; Subject Term: CARBYNES; Subject Term: PHOTOCHEMISTRY; Number of Pages: 9p; Illustrations: 5 Graphs; Document Type: Article L3 - 10.1063/1.1599346 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10691628&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hammond, Vincent H. AU - Houtz, Marlene D. AU - O’Reilly, James M. T1 - Structural relaxation in a bulk metallic glass JO - Journal of Non-Crystalline Solids JF - Journal of Non-Crystalline Solids Y1 - 2003/09/15/ VL - 325 IS - 1-3 M3 - Article SP - 179 SN - 00223093 AB - Differential scanning calorimetry has been used to investigate the structural relaxation in a bulk metallic glass designated Vit 4. Results indicate that Vit 4 has a broad glass transition region with a glass transition temperature of approximately 621 K and an activation enthalpy of 834 kJ/mol. Despite the broad transition region, Wunderlich’s model suggests that structural relaxation in Vit 4 involves the cooperative motion of a single bead. The relaxation behavior was well described by the Tool–Narayanaswamy equation, with x and β values not significantly different from other glass formers. The dynamic and thermodynamic fragility of Vit 4 is compared with other glasses. [Copyright &y& Elsevier] AB - Copyright of Journal of Non-Crystalline Solids is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CALORIMETRY KW - RELAXATION (Nuclear physics) KW - ENTHALPY N1 - Accession Number: 10570397; Hammond, Vincent H. 1 Houtz, Marlene D. 1 O’Reilly, James M.; Email Address: joreilly@rochester.rr.com; Affiliation: 1: Air Force Research Laboratory, AFRL/MLBP, 2941 P Street, Suite 1, Wright–Patterson AFB, OH 45433-7750, USA; Source Info: Sep2003, Vol. 325 Issue 1-3, p179; Subject Term: CALORIMETRY; Subject Term: RELAXATION (Nuclear physics); Subject Term: ENTHALPY; Number of Pages: 8p; Document Type: Article L3 - 10.1016/S0022-3093(03)00311-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10570397&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kahler, S.W. AU - Crooker, N.U. AU - Larson, D.E. T1 - Parameterizing the Wind 3DP Heat Flux Electron Data. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2003/09/02/ VL - 679 IS - 1 M3 - Article SP - 172 PB - American Institute of Physics SN - 0094243X AB - Solar wind heat flux (HF) electrons are valuable as tracers of the interplanetary magnetic field (IMF) topology, distinguishing positive from negative solar polarities and indicating the presence of magnetically closed CMEs when the flows are counterstreaming. All past applications of heat fluxes to determine field topologies have been based on visual inspection of color spectrograms of electron pitch angle distributions (PADs). However, HF PADs can take a range of shapes and amplitudes, which challenges the visual analysis. We now take a quantitative approach to HF analysis by parameterizing the HF PADs of the UC Berkeley 3DP data with a Fourier harmonic analysis. We have calculated the harmonic cosine coefficients A0 through A4 for a five-year period of the Wind 3DP data set with a 10-min time resolution. With these data we intend to derive quantitative criteria for unidirectional and bi-directional flows and other possible diagnostics of interplanetary field dynamics or configurations. Some initial considerations and results of the 3DP parameterization are presented. © 2003 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR wind KW - ELECTRON transport KW - SOLAR magnetic fields N1 - Accession Number: 10965074; Kahler, S.W. 1 Crooker, N.U. 2 Larson, D.E. 3; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory 2: Center for Space Physics, Boston University 3: Space Sciences Laboratory, University of California; Source Info: 2003, Vol. 679 Issue 1, p172; Subject Term: SOLAR wind; Subject Term: ELECTRON transport; Subject Term: SOLAR magnetic fields; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.1618569 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10965074&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Arge, C.N. AU - Harvey, K.L. AU - Hudson, H.S. AU - Kahler, S.W. T1 - Narrow coronal holes in Yohkoh soft X-ray images and the slow solar wind. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2003/09/02/ VL - 679 IS - 1 M3 - Article SP - 202 PB - American Institute of Physics SN - 0094243X AB - Soft X-ray images of the solar corona sometimes show narrow dark features not obviously present in HE I 10830Å images. We term these “narrow coronal holes” (NCHs). A prototype for this type of structure crossed solar central meridian on October 29, 2001. Standard source-surface models showed open magnetic field lines in this feature, tending to confirm its identification as a coronal hole. The magnetic field in this example is relatively strong (above 100 G in the low-resolution Kitt Peak magnetograms), and the boundaries of the open-field domain fall within the unipolar area as expected. We have surveyed the Yohkoh SXT data for other examples of this phenomenon, and have found several candidates. From observations of the associated solar wind, and from modeling, we find these regions to be sources of slow solar wind. © 2003 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR corona KW - CORONAL holes (Astronomy) KW - SOLAR magnetic fields N1 - Accession Number: 10965066; Arge, C.N. 1 Harvey, K.L. Hudson, H.S. 2 Kahler, S.W. 3; Affiliation: 1: CIRES, University of Colorado & NOAA, SEC 2: Space Sciences Laboratory, UC Berkeley 3: Space Vehicles Directorate, Air Force Research Laboratory; Source Info: 2003, Vol. 679 Issue 1, p202; Subject Term: SOLAR corona; Subject Term: CORONAL holes (Astronomy); Subject Term: SOLAR magnetic fields; Number of Pages: 4p; Document Type: Article L3 - 10.1063/1.1618577 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10965066&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rogers Jr., James W. AU - Agnes, Gregory S. T1 - Asymptotic Finite Elements Introducing the Method of Integral Multiple Scales. JO - AIAA Journal JF - AIAA Journal Y1 - 2003/09// VL - 41 IS - 9 M3 - Article SP - 1797 EP - 1807 SN - 00011452 AB - The method of integral multiple scales (MIMS) is introduced and applied to linear and nonlinear beam models. Based on the method of multiple scales, MIMS is applied to the system Lagrangian and directly results in a system solution. An analytical solution approach is applied to a linear beam-string model to produce a system of linear differential equations that can be solved to produce an asymptotic solution. The true power of MIMS is then demonstrated through a finite element approach by using a set of parametric shape functions based on beam strings. Where the analytic methodology is limited to continuous systems, the finite element approach is easily applied to discontinuous systems providing an analysis method useful with distributed piezoelectric laminates. Both static and dynamic results are discussed. The use of the asymptotic shape functions in the MIMS asymptotic finite element method results in extremely high precision and provides a methodology that could provide a more efficient analytical tool for the development of highly compliant discontinuous systems. [ABSTRACT FROM AUTHOR] AB - Copyright of AIAA Journal is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BEAM dynamics KW - FINITE element method N1 - Accession Number: 10819360; Rogers Jr., James W. 1; Email Address: james.rogers2@wpafb.af.mil Agnes, Gregory S. 2; Email Address: gregory.agnes@afit.edu; Affiliation: 1: U.s. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 2: Aeronautical and Astronautical Engineering Department, Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio; Source Info: Sep2003, Vol. 41 Issue 9, p1797; Subject Term: BEAM dynamics; Subject Term: FINITE element method; Number of Pages: 11p; Illustrations: 1 Black and White Photograph, 2 Charts, 8 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10819360&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bharat Bhushan AU - Paquet, Louise AU - Spain, Jim C. AU - Hawari, Jalal T1 - Biotransformation of 2,46,8,10,12-Hexanitro-2,4,6,8,10,12-Hexaazaisowurtzitane (CL-20) by Denitrifying Pseudomonas sp. Strain FA1. JO - Applied & Environmental Microbiology JF - Applied & Environmental Microbiology Y1 - 2003/09// VL - 69 IS - 9 M3 - Article SP - 5216 EP - 5221 SN - 00992240 AB - The microbial and enzymatic degradation of a new energetic compound, 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12hexaazaisowurtzitane (CL-20), is not well understood. Fundamental knowledge about the mechanism of microbial degradation of CL-20 is essential to allow the prediction of its fate in the environment. In the present study, a CL-20-degrading denitrifying strain capable of utilizing CL-20 as the sole nitrogen source, Pseudomonas sp. strain FA1, was isolated from a garden soil. Studies with intact cells showed that aerobic conditions were required for bacterial growth and that anaerobic conditions enhanced CL-20 biotransformation. An enzyme(s) involved in the initial biotransformation of CL-20 was shown to be membrane associated and NADH dependent, and its expression was up-regulated about 2.2-fold in CL-20-induced cells. The rates of CL-20 biotransformation by the resting cells and the membrane-enzyme preparation were 3.2 ± 0.1 nmol h[sup -1] mg of cell biomass[sup -1] and 11.5 ± 0.4 nmol h[sup -1] mg of protein[sup -1], respectively, under anaerobic conditions. In the membrane-enzyme-catalyzed reactions, 2.3 nitrite ions (NO[sup -, sub 2]), 1.5 molecules of nitrous oxide (N[sub 2]O), and 1.7 molecules of formic acid (HCOOH) were produced per reacted CL-20 molecule. The membrane-enzyme preparation reduced nitrite to nitrous oxide under anaerobic conditions. A comparative study of native enzymes, deflavoenzymes, and a reconstituted enzyme(s) and their subsequent inhibition by diphenyliodonium revealed that biotransformation of CL-20 is catalyzed by a membrane-associated flavoenzyme. The latter catalyzed an oxygen-sensitive one-electron transfer reaction that caused initial N denitration of CL-20. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROBIAL growth KW - BIODEGRADATION N1 - Accession Number: 10961023; Bharat Bhushan 1 Paquet, Louise 1 Spain, Jim C. 2 Hawari, Jalal 1; Email Address: jalal.hawari@nrc.ca; Affiliation: 1: Biotechnology Research Institute, National Research Council of Canada 2: U.S. Air Force Research Laboratory, Florida; Source Info: Sep2003, Vol. 69 Issue 9, p5216; Subject Term: MICROBIAL growth; Subject Term: BIODEGRADATION; Number of Pages: 6p; Illustrations: 1 Diagram, 3 Charts, 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10961023&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Li, K. AU - Gao, X.-L. AU - Roy, A.K. T1 - Micromechanics model for three-dimensional open-cell foams using a tetrakaidecahedral unit cell and Castigliano's second theorem JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2003/09// VL - 63 IS - 12 M3 - Article SP - 1769 SN - 02663538 AB - A micromechanics model for three-dimensional open-cell foams is developed using an energy method based on Castigliano''s second theorem. The analysis is performed on a tetrakaidecahedral unit cell, which is centered at one lattice point of a body-centered cubic lattice and is subjected to compression on its two opposite square faces. The 36 struts of the unit cell are treated as uniform slender beams undergoing linearly elastic deformations, and the 24 vertices as rigid joints. All three deformation mechanisms of the cell struts (i.e., stretching, shearing and bending) possible under the specified loading are incorporated, and four different strut cross section shapes (i.e., circle, square, equilateral triangle and Plateau border) are treated in a unified manner in the present model, unlike in earlier models. Two closed-form formulas for determining the effective Young''s modulus and Poisson''s ratio of open-cell foams are provided. These two formulas are derived by using the composite homogenization theory and contain more parameters than those included in existing models. The new formulas explicitly show that the foam elastic properties depend on the relative foam density, the shape and size of the strut cross section, and the Young''s modulus and Poisson''s ratio of the strut material. By applying the newly derived model directly, a parametric study is conducted for carbon foams, whose modeling motivated the present study. The predicted values of the effective Young''s modulus and Poisson''s ratio compare favorably with those based on existing models and experimental data. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROMECHANICS KW - FOAM KW - ELASTICITY KW - A. Open-cell foams KW - B. Microstructure KW - C. Elastic properties KW - C. Energy methods N1 - Accession Number: 10232315; Li, K. 1 Gao, X.-L. 1; Email Address: xgao@mtu.edu Roy, A.K. 2; Affiliation: 1: Department of Mechanical Engineering—Engineering Mechanics, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931-1295, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, AFRL/MLBC, Wright-Patterson Air Force Base, OH 45433-7750, USA; Source Info: Sep2003, Vol. 63 Issue 12, p1769; Subject Term: MICROMECHANICS; Subject Term: FOAM; Subject Term: ELASTICITY; Author-Supplied Keyword: A. Open-cell foams; Author-Supplied Keyword: B. Microstructure; Author-Supplied Keyword: C. Elastic properties; Author-Supplied Keyword: C. Energy methods; Number of Pages: 13p; Document Type: Article L3 - 10.1016/S0266-3538(03)00117-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10232315&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wilson, Glenn F. AU - Russell, Chris A. T1 - Operator functional state classification using multiple psychophysiological features in an air traffic control task. JO - Human Factors JF - Human Factors Y1 - 2003///Fall2003 VL - 45 IS - 3 M3 - journal article SP - 381 EP - 389 SN - 00187208 AB - We studied 2 classifiers to determine their ability to discriminate among 4 levels of mental workload during a simulated air traffic control task using psychophysiological measures. Data from 7 air traffic controllers were used to train and test artificial neural network and stepwise discriminant classifiers. Very high levels of classification accuracy were achieved by both classifiers. When the 2 task difficulty manipulations were tested separately, the percentage correct classifications were between 84% and 88%. Feature reduction using saliency analysis for the artificial neural networks resulted in a mean of 90% correct classification accuracy. Considering the data as a 2-class problem, acceptable load versus overload, resulted in almost perfect classification accuracies, with mean percentage correct of 98%. In applied situations, the most important distinction among operator functional states would be to detect mental overload situations. These results suggest that psychophysiological data are capable of such discriminations with high levels of accuracy. Potential applications of this research include test and evaluation of new and modified systems and adaptive aiding. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIR traffic control KW - PSYCHOPHYSIOLOGY KW - MENTAL work KW - NEURAL networks (Computer science) KW - OPERATOR functions KW - COMPUTER simulation N1 - Accession Number: 11917036; Wilson, Glenn F. 1; Email Address: glenn.wilson@wpafb.af.mil Russell, Chris A. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio; Source Info: Fall2003, Vol. 45 Issue 3, p381; Subject Term: AIR traffic control; Subject Term: PSYCHOPHYSIOLOGY; Subject Term: MENTAL work; Subject Term: NEURAL networks (Computer science); Subject Term: OPERATOR functions; Subject Term: COMPUTER simulation; NAICS/Industry Codes: 488111 Air Traffic Control; Number of Pages: 9p; Illustrations: 5 Charts; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11917036&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Colle, Herbert A. AU - Reid, Gary B. T1 - Spatial orientation in 3-D desktop displays: using rooms for organizing information. JO - Human Factors JF - Human Factors Y1 - 2003///Fall2003 VL - 45 IS - 3 M3 - journal article SP - 424 EP - 435 SN - 00187208 AB - Understanding how spatial knowledge is acquired is important for spatial navigation and for improving the design of 3-D perspective interfaces. Configural spatial knowledge of object locations inside rooms is learned rapidly and easily (Colle & Reid, 1998), possibly because rooms afford local viewing in which objects are directly viewed or, alternatively, because of their structural features. The local viewing hypothesis predicts that the layout of objects outside of rooms also should be rapidly acquired when walls are removed and rooms are sufficiently close that participants can directly view and identify objects. It was evaluated using pointing and sketch map measures of configural knowledge with and without walls by varying distance, lighting levels, and observation instructions. Although within-room spatial knowledge was uniformly good, local viewing was not sufficient for improving spatial knowledge of objects in different rooms. Implications for navigation and 3-D interface design are discussed. Actual or potential applications of this research include the design of user interfaces, especially interfaces with 3-D displays. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFORMATION display systems KW - INFORMATION technology KW - COMPUTER interfaces KW - USER interfaces (Computer systems) N1 - Accession Number: 11917039; Colle, Herbert A. 1; Email Address: bert.colle@wright.edu Reid, Gary B. 2; Affiliation: 1: Wrigth State University, Dayton, Ohio 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio; Source Info: Fall2003, Vol. 45 Issue 3, p424; Subject Term: INFORMATION display systems; Subject Term: INFORMATION technology; Subject Term: COMPUTER interfaces; Subject Term: USER interfaces (Computer systems); Number of Pages: 12p; Illustrations: 3 Diagrams, 1 Chart, 2 Graphs; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11917039&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barabash, O.M. AU - Milman, Yu.V. AU - Miracle, D.V. AU - Karpets, M.V. AU - Korzhova, N.P. AU - Legkaya, T.N. AU - Mordovets, N.M. AU - Podrezov, Yu.N. AU - Voskoboinik, I.V. T1 - Formation of periodic microstructures involving the L12 phase in eutectic Al–Ti–Cr alloys JO - Intermetallics JF - Intermetallics Y1 - 2003/09// VL - 11 IS - 9 M3 - Article SP - 953 SN - 09669795 AB - The temperature–concentration parameters defining the existence of the eutectic transformation L⇄L12+β at the Al-rich corner of the Al–Ti–Cr phase diagram have been studied. The temperature of this transformation decreases from 1275 to 1250 °C with decreasing titanium content in the alloy, and its temperature interval is at most 10 °C. The univariant eutectic transformation line L⇄L12+β was constructed, whose coordinates on the concentration triangle are defined by the equation (in at.%): CAl=95.48–3.45CTi + 0.068 (CTi)2. As a result of this transformation, periodic microstructures consisting of lamellae and fibres of the cubic L12 and β phases are produced. Transformations in the solid state which occur during cooling lead to the precipitation of intermetallic compounds from the β-solid solution: TiAlCr (structural type C14) or AlCr2 (structural type C11b). The position of the boundary at which the change of precipitating phases occurs was determined. The analysis of mechanical properties shows that the transition from single-phase L12 aloys to eutectic microstructures is accompanied by enhancement of both strength and plasticity, while retaining a high elastic modulus. [Copyright &y& Elsevier] AB - Copyright of Intermetallics is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EUTECTICS KW - MIXTURES KW - SOLIDIFICATION KW - TITANIUM KW - INTERMETALLIC compounds KW - A. Aluminides KW - A. Eutectic structure KW - A. Ternary alloy systems KW - B. Mechanical properties N1 - Accession Number: 10503949; Barabash, O.M. 1 Milman, Yu.V. 2; Email Address: milman@materials.kiev.ua Miracle, D.V. 3 Karpets, M.V. 2 Korzhova, N.P. 2 Legkaya, T.N. 1 Mordovets, N.M. 2 Podrezov, Yu.N. 2 Voskoboinik, I.V. 2; Affiliation: 1: G.V. Kurdumov Institute of Metal Physics, 36 Vernadskogo Str., 03142 Kyiv, Ukraine 2: I.N. Frantsenich Institute for Problems of Materials Science, 3 Krzhizhanovsky Str., 03142 Kyiv, Ukraine 3: Air Force Research Laboratory, 2230 Tenth Street, Wright-Patterson AFB, OH 45433, USA; Source Info: Sep2003, Vol. 11 Issue 9, p953; Subject Term: EUTECTICS; Subject Term: MIXTURES; Subject Term: SOLIDIFICATION; Subject Term: TITANIUM; Subject Term: INTERMETALLIC compounds; Author-Supplied Keyword: A. Aluminides; Author-Supplied Keyword: A. Eutectic structure; Author-Supplied Keyword: A. Ternary alloy systems; Author-Supplied Keyword: B. Mechanical properties; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 10p; Document Type: Article L3 - 10.1016/S0966-9795(03)00122-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10503949&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - John, R. AU - Jata, K.V. AU - Sadananda, K. T1 - Residual stress effects on near-threshold fatigue crack growth in friction stir welds in aerospace alloys JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2003/09// VL - 25 IS - 9-11 M3 - Article SP - 939 SN - 01421123 AB - Friction stir welding (FSW) is being explored as a potential tool for manufacturing aluminum aerospace structures. Several joint configurations, butt, lap and fillet joints have been made in the production of such exploratory structures. Research work on S–N fatigue and fatigue crack growth in the weld zone is required to provide an understanding and tools to assess the damage tolerance issues in friction stir welded joints and structures. In this work, results of a study conducted on near-threshold fatigue crack growth in friction stir welded aluminum alloy 7050-T7451 and a titanium alloy Ti–6Al–4V are presented. Tests were conducted on weld coupons as a function of specimen geometry (compact tension, eccentrically loaded single edge and center-crack tension) and stress ratio to understand the effects of residual stresses in the heat affected zone (HAZ) of the alloy. Residual stresses were measured on samples machined from the friction stir welded plates prior to testing. The crack growth results show that residual stresses play a key role in the crack growth parallel to the weld-path in the HAZ. Although friction stir welding process induced low residual stresses in the welds, they are found to produce large effects on the near-threshold fatigue crack growth. In general, the magnitude of the shift in the fatigue threshold in the friction stir welded coupons is a function of microstructure, residual stresses and specimen geometry. However, for a constant microstructure, fatigue thresholds at low stress ratios, were specimen geometry dependent. The thresholds were either higher or lower than those of the parent material. At high stress ratio, the differences due to the specimen geometry vanish. Stress ratio studies show that the center-crack tension geometry is less sensitive to the residual stress effects compared to the compact tension geometry. Crack growth analysis using equivalent residual stresses was used to determine the residual stress intensity factor and predict stress ratio effects. The role of microstructure on the fatigue threshold in the welds is also discussed. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRICTION KW - STRAINS & stresses (Mechanics) KW - ALUMINUM KW - AEROSPACE engineering KW - Analysis KW - Crack growth KW - Fatigue threshold KW - Friction stir weld KW - Heat affected zone KW - Residual stress KW - Stress ratio N1 - Accession Number: 11320941; John, R. 1 Jata, K.V. 1 Sadananda, K. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/MLLM), Wright–Patterson Air Force Base, OH 45433-7817, USA 2: Naval Research Laboratory, Washington, DC, USA; Source Info: Sep2003, Vol. 25 Issue 9-11, p939; Subject Term: FRICTION; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ALUMINUM; Subject Term: AEROSPACE engineering; Author-Supplied Keyword: Analysis; Author-Supplied Keyword: Crack growth; Author-Supplied Keyword: Fatigue threshold; Author-Supplied Keyword: Friction stir weld; Author-Supplied Keyword: Heat affected zone; Author-Supplied Keyword: Residual stress; Author-Supplied Keyword: Stress ratio; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331318 Other Aluminum Rolling, Drawing, and Extruding; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.ijfatigue.2003.08.002 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11320941&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ruschau, John AU - Thompson, Steven R. AU - Nicholas, Ted T1 - High cycle fatigue limit stresses for airfoils subjected to foreign object damage JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2003/09// VL - 25 IS - 9-11 M3 - Article SP - 955 SN - 01421123 AB - The foreign object damage (FOD) on leading edge geometries from particles ingested into gas turbine engines found to be comprised of geometric discontinuities like a notch, the residual stresses in regions adjacent to the notch, and material degradation in the form of micro-cracks, plastic deformation, voids, etc. The extent of the damage is related to the geometry and characteristics of the impacting object as well as those of the leading edge in terms of the resultant high cycle fatigue (HCF) strength of a simulated airfoil geometry. Steel spheres having diameters ranging from 0.5 to 2.0 mm are used as the impacting objects at velocities over a range from 60 to 500 m/s. The role of residual stresses is identified through the use of samples subjected to stress relief annealing. Simple notch analysis is used to estimate the effect of the geometry on the fatigue strength. Step-loading fatigue tests in tension-tension at 350 Hz are used to establish the HCF strength corresponding to 107 cycles. Impacts that result in the formation of craters are found to absorb more energy than those that produce chipped or fractured notches of the same geometry. Chipping, on the other hand, is found to be more detrimental to the HCF strength. Simple notch analysis is used to predict crater dimensions, but is found to be applicable only under limited conditions when residual stresses and material damage are not significant. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TURBINES KW - ENGINES KW - RESIDUAL stresses KW - DEFORMATIONS (Mechanics) KW - Fatigue KW - Foreign object damage (FOD) KW - Impact KW - Residual stress KW - Titanium N1 - Accession Number: 11320943; Ruschau, John 1; Email Address: john.ruschau@wpafb.af.mil Thompson, Steven R. 2 Nicholas, Ted 1; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45429, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, OH 45433, USA; Source Info: Sep2003, Vol. 25 Issue 9-11, p955; Subject Term: TURBINES; Subject Term: ENGINES; Subject Term: RESIDUAL stresses; Subject Term: DEFORMATIONS (Mechanics); Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Foreign object damage (FOD); Author-Supplied Keyword: Impact; Author-Supplied Keyword: Residual stress; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 333618 Other Engine Equipment Manufacturing; NAICS/Industry Codes: 333611 Turbine and Turbine Generator Set Units Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/S0142-1123(03)00135-X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11320943&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nicholas, T. AU - Hutson, A. AU - John, R. AU - Olson, S. T1 - A fracture mechanics methodology assessment for fretting fatigue JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2003/09// VL - 25 IS - 9-11 M3 - Article SP - 1069 SN - 01421123 AB - A fracture mechanics methodology was evaluated for a fretting fatigue geometry in which one end of a specimen clamped between fretting pads was loaded in axial fatigue. In previous work, results from experiments on Ti–6Al–4V pads and specimens were evaluated using finite element analyses where stress intensity factors were calculated assuming a single-edge tension, Mode I crack to form. In the present work, mixed-mode behavior was considered and a more realistic crack geometry was incorporated. KI and KII were calculated from stress fields determined from the finite element analysis using a weight function method and assuming a single-edge Mode I/Mode II inclined crack. A correction was then applied based on empirical crack aspect ratio data. KI and KII were analyzed for several experimentally determined combinations of contact pad geometry, specimen thickness, and loading conditions used to obtain a range of normal and shear forces, each corresponding to a fatigue life of 107 cycles. The fracture mechanics methodology was used to determine the conditions for propagation or non-propagation of cracks that initiate in the edge of contact region based on a mixed-mode driving force and a short crack corrected threshold. The coefficient of friction was also varied in the analyses. The fracture mechanics approach appears to be a better method for determining the threshold for fretting fatigue than a stress analysis because thresholds for K are better known than criteria for crack initiation in a gradient stress field. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MECHANICS (Physics) KW - MATERIALS -- Fatigue KW - SHEAR (Mechanics) KW - Fatigue KW - Fracture mechanics KW - Fretting KW - Threshold KW - Titanium N1 - Accession Number: 11320954; Nicholas, T. 1; Email Address: theodore.nicholas@afit.edu Hutson, A. 2 John, R. 3 Olson, S. 2; Affiliation: 1: Air Force Institute of Technology, AFIT/ENY, Wright-Patterson AFB, OH 45433, USA 2: University of Dayton Research Institute, Dayton, OH 45469, USA 3: Air Force Research Laboratory, AFRL/MLLMN, Wright-Patterson AFB, OH 45433, USA; Source Info: Sep2003, Vol. 25 Issue 9-11, p1069; Subject Term: MECHANICS (Physics); Subject Term: MATERIALS -- Fatigue; Subject Term: SHEAR (Mechanics); Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Fracture mechanics; Author-Supplied Keyword: Fretting; Author-Supplied Keyword: Threshold; Author-Supplied Keyword: Titanium; Number of Pages: 9p; Document Type: Article L3 - 10.1016/S0142-1123(03)00115-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11320954&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mall, Shankar AU - Nicholas, Theodore AU - Park, Tae-Won T1 - Effect of predamage from low cycle fatigue on high cycle fatigue strength of Ti-6Al-4V JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2003/09// VL - 25 IS - 9-11 M3 - Article SP - 1109 SN - 01421123 AB - Effects of prior low cycle fatigue (LCF) cycling on the subsequent high cycle fatigue (HCF) limit stress corresponding to a life of 107 cycles are investigated for Ti-6Al-4V at room temperature. Tests are conducted at 420 Hz on an electrodynamic shaker-based system at several different LCF maximum loads and under subsequent HCF at R=0.1, 0.5 and 0.8 using a step loading procedure. Under these load combinations, which include the possibility of overload or underload effects if cracks form, there is no statistically significant effect of the prior LCF on the subsequent HCF limit stress. While LCF loading at a high stress of 900 MPa is seen to result in strain ratcheting, no distinct features on the fracture surface and different mechanisms of crack propagation from those obtained at lower maximum loads were observed. LCF loading up to 50% of expected life did not produce any indications of crack formation from either the stress limit data or the fracture surfaces. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Fatigue KW - STRUCTURAL analysis (Engineering) KW - STRUCTURAL engineering KW - ELECTRODYNAMICS KW - Damage mechanisms KW - High cycle fatigue KW - Low cycle fatigue KW - Predamage KW - Titanium alloy N1 - Accession Number: 11320958; Mall, Shankar 1; Email Address: Shankar.Mall@afit.edu Nicholas, Theodore 2 Park, Tae-Won 2; Affiliation: 1: Air Force Institute of Technology, Materials and Manufacturing Directorate (AFRL/MLLMN), AFIT/ENY, Bldg. 640 2950 P. St, Wright Patterson Air Force Base, OH 45433 7765, USA 2: Air Force Research Laboratory (AFRL/MLLMN), Materials and Manufacturing Directorate, 2230 Tenth Street, Suite 1, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Sep2003, Vol. 25 Issue 9-11, p1109; Subject Term: MATERIALS -- Fatigue; Subject Term: STRUCTURAL analysis (Engineering); Subject Term: STRUCTURAL engineering; Subject Term: ELECTRODYNAMICS; Author-Supplied Keyword: Damage mechanisms; Author-Supplied Keyword: High cycle fatigue; Author-Supplied Keyword: Low cycle fatigue; Author-Supplied Keyword: Predamage; Author-Supplied Keyword: Titanium alloy; Number of Pages: 8p; Document Type: Article L3 - 10.1016/S0142-1123(03)00116-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11320958&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morrissey, Ryan J. AU - Golden, Pat AU - Nicholas, Ted T1 - The effect of stress transients on the HCF endurance limit JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2003/09// VL - 25 IS - 9-11 M3 - Article SP - 1125 SN - 01421123 AB - Constant amplitude fatigue of a material at a fixed stress ratio, R, and at some limiting stress level, may produce high cycle fatigue (HCF) lives in excess of some large number, typically 107 or higher, which can be treated as an endurance limit. Under vibratory loading, stress transients can exceed this endurance limit amplitude and cause damage that accumulates with repeated transient loading. These HCF transients normally occur at lower stress amplitudes than those needed to cause low cycle fatigue (LCF) where lives, N, are typically in the range N < 104–105. Therefore, the HCF transient stresses produce cycles to failure beyond the normal LCF regime but correspond to amplitudes that are above the fatigue limit stress. In this investigation, a titanium alloy, Ti-6Al-4V, is subjected to HCF stress transients while being cycled under constant amplitude HCF. The HCF transients correspond to blocks of loading above the fatigue limit stress applied for a specified fraction of their expected life. A step-loading procedure is used to determine the fatigue limit stress at a frequency of 420 Hz. Stress transients applied at stresses up to 40% above the endurance limit for cycle counts up to 25% of expected life are found to have little or no effect on the fatigue limit stress. Simple calculations of the propagation life in a test specimen show that most of the life at these transient stress levels is spent in the nucleation phase. Fractography, aided by heat tinting, was unable to detect any prior cracks due to the HCF stress transients on the fractured specimens. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - MATERIALS -- Fatigue KW - TITANIUM alloys KW - Endurance limit KW - Fatigue KW - Load history KW - Overloads KW - Threshold KW - Titanium N1 - Accession Number: 11320960; Morrissey, Ryan J. 1; Email Address: Ryan.Morrissey@wpafb.af.mil Golden, Pat 1 Nicholas, Ted 2; Affiliation: 1: Air Force Research Laboratory (AFRL/MLLMN), Wright-Patterson AFB, OH 45433, USA 2: University of Dayton Research Institute, Dayton, OH 45469, USA; Source Info: Sep2003, Vol. 25 Issue 9-11, p1125; Subject Term: STRAINS & stresses (Mechanics); Subject Term: MATERIALS -- Fatigue; Subject Term: TITANIUM alloys; Author-Supplied Keyword: Endurance limit; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Load history; Author-Supplied Keyword: Overloads; Author-Supplied Keyword: Threshold; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 9p; Document Type: Article L3 - 10.1016/j.ijfatigue.2003.08.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11320960&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abadi, Jacob T1 - The Road to Israeli-Spanish Rapprochement. JO - Israel Affairs JF - Israel Affairs Y1 - 2003///Autumn/Winter2004 VL - 10 IS - 1/2 M3 - Article SP - 177 EP - 202 PB - Routledge SN - 13537121 AB - This essay provides an analysis of Israeli-Spanish relations from the establishment of the state of Israel to the present. Its main argument is that these relations constituted an anomaly in Israel's foreign policy, the main objective of which was to strengthen ties with the countries of Western Europe. Israel's approach to Spain was determined by both emotional and practical considerations. Successive Israeli governments avoided rapprochement with Spain not only because of its association with Nazi Germany but also in order to avoid criticism from the opposition parties. Yet, despite the absence of full diplomatic relations the two countries maintained close contacts in many fields. Spain sought to improve relations with Israel in order to demonstrate willingness to turn its back on its fascist past, to play a greater role in Middle Eastern affairs, and to improve its ties with the US. However, rapprochement with Israel would not have been possible without the demise of Franco's autocratic regime. [ABSTRACT FROM AUTHOR] AB - Copyright of Israel Affairs is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIPLOMACY KW - DICTATORSHIP KW - INTERNATIONAL relations KW - ISRAEL -- Foreign relations KW - SPAIN -- Foreign relations N1 - Accession Number: 12350115; Abadi, Jacob 1; Affiliation: 1: Professor of History, US Air Force Academy, Colorado Springs; Source Info: Autumn/Winter2004, Vol. 10 Issue 1/2, p177; Subject Term: DIPLOMACY; Subject Term: DICTATORSHIP; Subject Term: INTERNATIONAL relations; Subject Term: ISRAEL -- Foreign relations; Subject Term: SPAIN -- Foreign relations; NAICS/Industry Codes: 928120 International Affairs; NAICS/Industry Codes: 911410 Foreign affairs; Number of Pages: 26p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12350115&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Durstock, Michael F. AU - Spry, Robert J. AU - Baur, Jeffery W. AU - Taylor, Barney E. AU - Chiang, Long Y. T1 - Investigation of electrostatic self-assembly as a means to fabricate and interfacially modify polymer-based photovoltaic devices. JO - Journal of Applied Physics JF - Journal of Applied Physics Y1 - 2003/09//9/1/2003 VL - 94 IS - 5 M3 - Article SP - 3253 PB - American Institute of Physics SN - 00218979 AB - This work focuses on studying a water-based processing method for fabricating and modifying polymer-based photovoltaic devices based on donor–acceptor type complexes. Electrostatic self-assembly is a simple technique that involves immersion of a substrate into dilute aqueous solutions of positively and negatively charged polymers. Extremely thin layers of these polymers are adsorbed onto the surface and their structure can be tailored by manipulating deposition conditions such as the concentration, pH, and salt content. Poly(p-phenylene vinylene) (PPV) containing bilayers were examined as the donor block and water soluble, functionalized C[sub 60] molecules were investigated for the acceptor block. By varying the number of bilayers deposited in each individual block (i.e., the block thickness), we have been able to demonstrate a peak in device performance. By controlling the thickness of both the donor and acceptor blocks, we have determined the optimal device architecture for this system. Additionally, we have demonstrated that the interface between the donor and acceptor layers can be modified by inserting thin interfacial layers in between the blocks. The insertion of only two interfacial bilayers apparently combines the donor and acceptor functionalities such that the efficiency can be improved by a factor of 3. From this, it is apparent that one strength of electrostatic self-assembly lies in the modification of surfaces and interfaces, which is a key capability for further development of polymeric photovoltaics. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROSTATICS KW - POLYMERS KW - PHOTOVOLTAIC power systems KW - MACROMOLECULES N1 - Accession Number: 10603955; Durstock, Michael F. 1; Email Address: niichaeldurstock@wpath.af.mil Spry, Robert J. 1 Baur, Jeffery W. 1 Taylor, Barney E. 2 Chiang, Long Y. 3; Affiliation: 1: Polymer Branch, Air Force Research Laboratory, 2941 P Street, Building 654, Wright-Patterson Air Force Base, Ohio 45433. 2: University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469. 3: Department of Chemistry, University of Massachusetts, Lowell, Lowell, Massachusetts 01854.; Source Info: 9/1/2003, Vol. 94 Issue 5, p3253; Subject Term: ELECTROSTATICS; Subject Term: POLYMERS; Subject Term: PHOTOVOLTAIC power systems; Subject Term: MACROMOLECULES; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; Number of Pages: 7p; Illustrations: 1 Diagram, 8 Graphs; Document Type: Article L3 - 10.1063/1.1601315 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10603955&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Voevodin, Valeriy G. AU - Bereznaja, Svetlana A. AU - Voevodina, Olga V. AU - Korotchenko, Zoya V. AU - Fernelius, Nils C. AU - Ohmer, Melvin C. AU - Goldstein, Jonathan T. T1 - Doping of ternary compounds CdGeAs2 and CdSnAs2 by impurities of I, II and III groups JO - Journal of Physics & Chemistry of Solids JF - Journal of Physics & Chemistry of Solids Y1 - 2003/09// VL - 64 IS - 9/10 M3 - Article SP - 1755 SN - 00223697 AB - Research in doping processes of ternary chalcopyrites A2B4C25 is of primary interest for several reasons. First of all, a study of the dependencies of ‘the properties of crystal vs. the concentration of impurity in melt’ decides a fundamental problem. It is a check on the theory of ordering of a crystal structure for some specifically defined values of dopant concentration leading to a possible phase transformation caused by the self-organization of large-scale fluctuations in a melt. On the other hand, it is necessary also for practical tasks—for example, obtaining high-resistance CdGeAs2-crystals for use in nonlinear optics.In the present work data on electrical activity and on an effect in the electrophysical properties of ternary semiconductors CdGeAs2 and CdSnAs2 are obtained for dopants of Au, Cu, Zn, In, Sc and Gd in CdGeAs2 and for Au, Cu and In in CdSnAs2, added to a melt during synthesis or recrystallization of a material. [Copyright &y& Elsevier] AB - Copyright of Journal of Physics & Chemistry of Solids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONTAMINATION (Technology) KW - CHALCOPYRITE KW - HIGH technology industries KW - CRYSTALS KW - B. Crystal growth N1 - Accession Number: 10741640; Voevodin, Valeriy G. 1; Email Address: voevodin@elefot.tsu.ru Bereznaja, Svetlana A. 1 Voevodina, Olga V. 1 Korotchenko, Zoya V. 1 Fernelius, Nils C. 2 Ohmer, Melvin C. 2 Goldstein, Jonathan T. 2; Affiliation: 1: Siberian Physico-Technical Institute, Tomsk, Russian Federation 2: Air Force Research Laboratory-Materials & Manufacturing Directorate, WPAFB, Dayton, OH, USA; Source Info: Sep2003, Vol. 64 Issue 9/10, p1755; Subject Term: CONTAMINATION (Technology); Subject Term: CHALCOPYRITE; Subject Term: HIGH technology industries; Subject Term: CRYSTALS; Author-Supplied Keyword: B. Crystal growth; NAICS/Industry Codes: 212234 Copper Ore and Nickel Ore Mining; NAICS/Industry Codes: 212233 Copper-zinc ore mining; Number of Pages: 6p; Document Type: Article L3 - 10.1016/S0022-3697(03)00104-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10741640&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Akdim AU - B. AU - Duan AU - X. AU - Pachter AU - R. T1 - The Effects of O2 Adsorbates on Field Emission Properties of Single-Wall Carbon Nanotubes: A Density Functional Theory Study. JO - Nano Letters JF - Nano Letters Y1 - 2003/09// VL - 3 IS - 9 M3 - Article SP - 1209 SN - 15306984 AB - We report a theoretical study on the effects of O2 adsorption at tips of single-wall carbon nanotubes for capped and uncapped geometries. Adsorption mechanisms that take place at the tip, also including the effects of an electric field, are described, highlighting configurations that alter emission properties. Changes in the first ionization potentials upon O2 adsorption are consistent with the experimentally observed current suppression, demonstrating the usefulness of first principles calculations in understanding adsorption mechanisms, and the prediction of properties related to field emission. [ABSTRACT FROM AUTHOR] AB - Copyright of Nano Letters is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOTUBES KW - ADSORPTION KW - FIELD emission N1 - Accession Number: 10816323; Akdim B. 1 Duan X. 1 Pachter R. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, AFRL/ML, Aeronautical Systems Center Major Shared Resource Center for High Performance Computing, ASC/HP Wright-Patterson Air Force Base, Ohio 45433; Source Info: Sep2003, Vol. 3 Issue 9, p1209; Subject Term: NANOTUBES; Subject Term: ADSORPTION; Subject Term: FIELD emission; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10816323&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baugher, Benjamin AU - Goldstein, Jonathan T1 - Temperature dependence of the birefringence of SiC JO - Optical Materials JF - Optical Materials Y1 - 2003/09// VL - 23 IS - 3/4 M3 - Article SP - 519 SN - 09253467 AB - Measurements of the birefringence of 6H-SiC, as well as its temperature dependence, are presented. The results are used to explore the possibilities this material presents as a mid-infrared non-linear optical parametric oscillator. [Copyright &y& Elsevier] AB - Copyright of Optical Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DOUBLE refraction KW - SILICON carbide N1 - Accession Number: 10179685; Baugher, Benjamin 1 Goldstein, Jonathan 2; Email Address: jonathan.goldstein@wpafb.af.mil; Affiliation: 1: Cedarville University, Cedarville, OH, 45314 USA 2: Air Force Research Laboratory, AFRL/MLPO 3005 P-Street, Wright–Patterson Air Force Base (AFB), Dayton, OH 45433-7707, USA; Source Info: Sep2003, Vol. 23 Issue 3/4, p519; Subject Term: DOUBLE refraction; Subject Term: SILICON carbide; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/S0925-3467(03)00017-X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10179685&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mowle, Thomas S. T1 - Worldviews in Foreign Policy: Realism, Liberalism, and External Conflict. JO - Political Psychology JF - Political Psychology Y1 - 2003/09// VL - 24 IS - 3 M3 - Article SP - 561 EP - 592 PB - Wiley-Blackwell SN - 0162895X AB - International relations studies have been unable to determine whether realist or liberal theories better fit state behavior in various situations, possibly because these studies have attributed motive and action to the states rather than to the decision-makers within them. This article develops a new, more direct approach to resolving this problem. Hypotheses were tested regarding conditions under which decision-makers are likely to articulate a problem representation consistent with liberal or realist elements of a worldview. This was done by content analysis of statements about 36 foreign conflicts by the governments of three “bystander” nations—the United States, Canada, and India—over a 16-year period. The findings indicate that systemic and situational factors are far more important than domestic factors. States tend to represent wars in congruence with liberalism primarily when their security is already assured by another power or when the conflict does not involve allies, rivals, or fellow democracies. Thus, most of the expectations of realism are supported at the psychological level. [ABSTRACT FROM AUTHOR] AB - Copyright of Political Psychology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIBERALISM KW - REALISM KW - INTERNATIONAL relations KW - content analysis KW - foreign policy decision-making KW - international relations theory KW - problem representation KW - United States foreign policy KW - worldview N1 - Accession Number: 10253939; Mowle, Thomas S. 1; Affiliation: 1: United States Air Force Academy; Source Info: Sep2003, Vol. 24 Issue 3, p561; Subject Term: LIBERALISM; Subject Term: REALISM; Subject Term: INTERNATIONAL relations; Author-Supplied Keyword: content analysis; Author-Supplied Keyword: foreign policy decision-making; Author-Supplied Keyword: international relations theory; Author-Supplied Keyword: problem representation; Author-Supplied Keyword: United States foreign policy; Author-Supplied Keyword: worldview; NAICS/Industry Codes: 911410 Foreign affairs; NAICS/Industry Codes: 928120 International Affairs; Number of Pages: 32p; Document Type: Article L3 - 10.1111/0162-895X.00341 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10253939&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Johnson, Joel A. AU - Barbato, Matthew J. AU - Hopkins, Sharlene R. AU - O’Malley, Matthew J. T1 - Dispersion and film properties of carbon nanofiber pigmented conductive coatings JO - Progress in Organic Coatings JF - Progress in Organic Coatings Y1 - 2003/09// VL - 47 IS - 3/4 M3 - Article SP - 198 SN - 03009440 AB - The use of multi-walled carbon nanotubes and nanofibers for coatings applications has been quite limited because of problems associated with obtaining dispersions of individual tubes/fibers. The potential for unique properties associated with these materials, such as obtaining electrical conductivity at very low volume concentrations, is dependent upon exploiting their very large geometric aspect ratios. Therefore, dispersion quality has a direct relationship to performance. We have developed a novel dispersion technique that appears to yield high quality dispersions without significant damage to the nanofiber properties. This technique involves the exfoliation of an aklylamine hectorite clay in the presence of nanofiber agglomerates, forming a stable gel, followed by stabilization with a suitable dispersant. We hypothesize that the size of the clay platelets is appropriate to penetrate the pores of the nanofiber agglomerates to assist in dispersive forces. Several thermoplastic acrylic coating formulations were prepared at various nanofiber volume concentrations utilizing this dispersion method. The onset of DC electrical conductivity was observed at only 4% volume concentration, indicative of high aspect ratios. Conductivity increases as a power law function of nanofiber volume concentration, resulting in 1.0 S/cm values at ∼12% volume. [Copyright &y& Elsevier] AB - Copyright of Progress in Organic Coatings is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARBON KW - NANOTUBES KW - PERCOLATION (Statistical physics) KW - THERMOPLASTIC composites KW - Carbon nanofiber KW - Conductive coating KW - Dispersion KW - Nanotube KW - Percolation threshold N1 - Accession Number: 11607103; Johnson, Joel A. 1; Email Address: joel.johnson@wpafb.af.mil Barbato, Matthew J. 1 Hopkins, Sharlene R. 2 O’Malley, Matthew J. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7750, USA 2: Southern Ohio Council for Higher Education, 3155 Research Blvd., Suite 204, Dayton, OH 45420-4015, USA; Source Info: Sep2003, Vol. 47 Issue 3/4, p198; Subject Term: CARBON; Subject Term: NANOTUBES; Subject Term: PERCOLATION (Statistical physics); Subject Term: THERMOPLASTIC composites; Author-Supplied Keyword: Carbon nanofiber; Author-Supplied Keyword: Conductive coating; Author-Supplied Keyword: Dispersion; Author-Supplied Keyword: Nanotube; Author-Supplied Keyword: Percolation threshold; Number of Pages: 9p; Document Type: Article L3 - 10.1016/S0300-9440(03)00139-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11607103&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Khramov, A.N. AU - Balbyshev, V.N. AU - Voevodin, N.N. AU - Donley, M.S. T1 - Nanostructured sol–gel derived conversion coatings based on epoxy- and amino-silanes JO - Progress in Organic Coatings JF - Progress in Organic Coatings Y1 - 2003/09// VL - 47 IS - 3/4 M3 - Article SP - 207 SN - 03009440 AB - Inorganic/organic hybrid conversion surface coatings for long-term protection of aluminum alloys against atmospheric corrosion have been developed based on a unique self-assembled nanophase particle (SNAP) coating process. Nano-particles with peripheral epoxy functional groups are pre-formed in an aqueous sol–gel process and then assembled and crosslinked upon application on the substrate surface. Mono-, di-, and tri-functional amino-silanes have been used as crosslinking agents. Corrosion resistance properties of these hybrid nanocomposite coatings studied by a variety of electrochemical testing methods including electrochemical impedance spectroscopy, scanning vibrating electrode technique, and potentiodynamic scan method, indicate excellent barrier protection performance of the coatings. For comparison, coatings crosslinked with amino-silanes offer significant improvement in coating performance over the previously described SNAP formulations with a conventional amine crosslinker—diethylenetriamine. [Copyright &y& Elsevier] AB - Copyright of Progress in Organic Coatings is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SURFACE coatings KW - ALUMINUM alloys KW - CORROSION & anti-corrosives KW - SILANE compounds KW - Amino-silane KW - Epoxy-silane KW - Nano-particle N1 - Accession Number: 11607104; Khramov, A.N. 1; Email Address: alex.khramov@fnnet.wpafbml.org Balbyshev, V.N. 1 Voevodin, N.N. 2 Donley, M.S. 3; Affiliation: 1: Universal Technology Corporation, 1270 N. Fairfield Road, Dayton, OH 45432-2600, USA 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45432-2600, USA 3: Air Force Research Laboratory, Materials and Manufaturing Directorate, Nonmetallic Materials Division, Nonstructural Materials Branch, Coatings Research Group, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Sep2003, Vol. 47 Issue 3/4, p207; Subject Term: SURFACE coatings; Subject Term: ALUMINUM alloys; Subject Term: CORROSION & anti-corrosives; Subject Term: SILANE compounds; Author-Supplied Keyword: Amino-silane; Author-Supplied Keyword: Epoxy-silane; Author-Supplied Keyword: Nano-particle; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/S0300-9440(03)00140-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11607104&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Naik, Rajesh R. AU - Brott, Lawrence L. AU - Rodriguez, Francisco AU - Agarwal, Gunjan AU - Kirkpatrick, Sean M. AU - Stone, Morley O. T1 - Bio-inspired approaches and biologically derived materials for coatings JO - Progress in Organic Coatings JF - Progress in Organic Coatings Y1 - 2003/09// VL - 47 IS - 3/4 M3 - Article SP - 249 SN - 03009440 AB - The synthesis of composite materials that exhibit inhomogeneities on the sub-micron or nanometer scale using chemical and physical deposition processes is a challenge. The use of a biomimetic approach may compliment existing methods in creating materials that exhibit properties that would not be otherwise achieved. We describe herein our efforts to fabricate functional optical devices that incorporate biomolecules. By incorporating biomolecules into monomer systems that can be cured using a two-photon polymerization mechanism, greater spatial resolution and increased biological viability can be achieved. In addition, the polymer can be patterned using ultrafast nonlinear holography to create a functional optical device. By exploiting the use of biomolecules to control the deposition of inorganics, functional coatings can be fabricated for a variety of optical and electronic applications. [Copyright &y& Elsevier] AB - Copyright of Progress in Organic Coatings is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERIC composites KW - NANOSCIENCE KW - BIOMIMETICS (Chemistry) KW - PHOTOPOLYMERIZATION KW - Biomimetics KW - Holograms KW - Proteins KW - Silver KW - Two-photon induced photopolymerization N1 - Accession Number: 11607108; Naik, Rajesh R. 1 Brott, Lawrence L. 1 Rodriguez, Francisco 1 Agarwal, Gunjan 1 Kirkpatrick, Sean M. 1 Stone, Morley O.; Email Address: morley.stone@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, OH 45433-7702, USA; Source Info: Sep2003, Vol. 47 Issue 3/4, p249; Subject Term: POLYMERIC composites; Subject Term: NANOSCIENCE; Subject Term: BIOMIMETICS (Chemistry); Subject Term: PHOTOPOLYMERIZATION; Author-Supplied Keyword: Biomimetics; Author-Supplied Keyword: Holograms; Author-Supplied Keyword: Proteins; Author-Supplied Keyword: Silver; Author-Supplied Keyword: Two-photon induced photopolymerization; Number of Pages: 7p; Document Type: Article L3 - 10.1016/S0300-9440(03)00141-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11607108&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Balbyshev, V.N. AU - Anderson, K.L. AU - Sinsawat, A. AU - Farmer, B.L. AU - Donley, M.S. T1 - Modeling of nano-sized macromolecules in silane-based self-assembled nano-phase particle coatings JO - Progress in Organic Coatings JF - Progress in Organic Coatings Y1 - 2003/09// VL - 47 IS - 3/4 M3 - Article SP - 337 SN - 03009440 AB - Molecular simulation approaches have been used to enhance the understanding of complex chemical interactions in coatings related processes. The Self-assembled NAno-phase Particle (SNAP) coating process relies on aqueous solution processes, similar to those used in conventional sol–gel synthesis, to form siloxane nano-sized structures, which are subsequently cross-linked upon film application. This process has been shown to produce a dense, protective thin film on metal substrates. The SNAP process involves design and selection of the coating constituents, based on the desired functionalities for network formation and cross-linking chemistry. In order to facilitate the design of coating components at the molecular level, it is imperative to gain a fundamental understanding of these complex phenomena.Molecular simulations on several oligomers with different side chains have been performed to study components of the of Si–O networks during the SNAP particle formation process. Several ring structures of tetramethyl orthosilicate (TMOS) and 3-glycidoxypropyltrimethoxysilane (GPTMS) have been considered. Geometry optimization of the cyclic Si–O structure formation has been performed, and ring strain parameters have been calculated. [Copyright &y& Elsevier] AB - Copyright of Progress in Organic Coatings is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SIMULATION methods & models KW - SURFACE coatings KW - NANOSTRUCTURED materials KW - SOLUTION (Chemistry) KW - Corrosion protection KW - SNAP KW - Sol–gel N1 - Accession Number: 11607118; Balbyshev, V.N. 1 Anderson, K.L. 2 Sinsawat, A. 3 Farmer, B.L. 2 Donley, M.S. 2; Affiliation: 1: Universal Technology Corporation, 1270 N. Fairfield Road, Dayton, OH 45432-2600, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Dayton, OH 45433-7750, USA 3: Department of Material Science and Engineering, University of Virginia, Charlottesville, VA 22904, USA; Source Info: Sep2003, Vol. 47 Issue 3/4, p337; Subject Term: SIMULATION methods & models; Subject Term: SURFACE coatings; Subject Term: NANOSTRUCTURED materials; Subject Term: SOLUTION (Chemistry); Author-Supplied Keyword: Corrosion protection; Author-Supplied Keyword: SNAP; Author-Supplied Keyword: Sol–gel; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 5p; Document Type: Article L3 - 10.1016/S0300-9440(03)00126-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11607118&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Iroh, Jude O. AU - Zhu, Yanrong AU - Shah, Kunal AU - Levine, Kirill AU - Rajagopalan, Ramakrishnan AU - Uyar, Tamer AU - Donley, M. AU - Mantz, R. AU - Johnson, J. AU - Voevodin, Natalia N. AU - Balbyshev, V.N. AU - Khramov, A.N. T1 - Electrochemical synthesis: a novel technique for processing multi-functional coatings JO - Progress in Organic Coatings JF - Progress in Organic Coatings Y1 - 2003/09// VL - 47 IS - 3/4 M3 - Article SP - 365 SN - 03009440 AB - Electrochemical synthesis is a powerful tool for surface modification, substrate cleaning and formulation of thin films and bulk materials. It is especially suited for surface modification of fibers, metals and films. In the past decade electrochemical method has become the preferred technique for in situ passivation, and coating of commodity metals such as aluminum, zinc, copper and steel.We have successfully synthesized different kinds of conducting polymers, including polypyrrole (PPy)–polyaniline (PANi) composites. The processability and corrosion performance of PPy/PANi, composite coatings are significantly better than those for either PPy or PANi, coatings.In this paper, we will discuss the use of electrochemical technique in the synthesis and characterization of multi-functional corrosion resistant conducting polymer coatings for aerospace and automotive applications. [Copyright &y& Elsevier] AB - Copyright of Progress in Organic Coatings is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROCHEMISTRY KW - SURFACE chemistry KW - THIN films KW - CLEANING KW - Electrochemical synthesis KW - Polyaniline (PANi) KW - Polypyrrole (PPy) KW - PPy–PANi composite coatings KW - PPy/PPy–PANi bi-layer coatings N1 - Accession Number: 11607121; Iroh, Jude O. 1; Email Address: jiroh@uceng.uc.edu Zhu, Yanrong 1 Shah, Kunal 1 Levine, Kirill 1 Rajagopalan, Ramakrishnan 1 Uyar, Tamer 1 Donley, M. 2 Mantz, R. 2 Johnson, J. 2 Voevodin, Natalia N. 2,3 Balbyshev, V.N. 2,4 Khramov, A.N. 2,4; Affiliation: 1: Department of Materials Science and Engineering, University of Cincinnati, Cincinnati, OH 45221-0012, USA 2: Air Force Research Laboratory (AFRL), Non-Metallic Division, Manufacturing and Materials Directorate, Wright Patterson Air Force Base (WPAFB), Wrightpatterson, OH 45433-7750, USA 3: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0168, USA 4: Universal Technology Corporation, 1270 N, Fairfield Road, Dayton, OH 45432-2600, USA; Source Info: Sep2003, Vol. 47 Issue 3/4, p365; Subject Term: ELECTROCHEMISTRY; Subject Term: SURFACE chemistry; Subject Term: THIN films; Subject Term: CLEANING; Author-Supplied Keyword: Electrochemical synthesis; Author-Supplied Keyword: Polyaniline (PANi); Author-Supplied Keyword: Polypyrrole (PPy); Author-Supplied Keyword: PPy–PANi composite coatings; Author-Supplied Keyword: PPy/PPy–PANi bi-layer coatings; NAICS/Industry Codes: 561720 Janitorial Services; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.porgcoat.2003.07.006 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11607121&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, Chenggang AU - Khobaib, Mohammad AU - Curliss, David T1 - Epoxy layered-silicate nanocomposites JO - Progress in Organic Coatings JF - Progress in Organic Coatings Y1 - 2003/09// VL - 47 IS - 3/4 M3 - Article SP - 376 SN - 03009440 AB - Polymer layered-silicate nanocomposites have attracted a lot of attention because of impressive enhancements of polymeric properties. In this research, both commercially available and synthesized organolayered silicates, which are compatible with the epoxy resins, were used to make epoxy nanocomposites. The epoxy resin used in this research includes Epon 862/curing agent W (the aerospace epoxy resin), the Epon 828/Epi-Cure curing agent 8290-Y-60 (used as the primer layer for corrosion prevention in aircraft coating), and Epon 828/Jeffamine D400. The morphology of the nanocomposites was characterized using wide-angle X-ray diffraction (WAXD), small-angle X-ray scattering (SAXS) and transmission electron microscopy (TEM). The morphology development for the aerospace epoxy-organoclay nanocomposite was monitored through in situ SAXS and analyzed. The solvent absorption of the exfoliated aerospace epoxy-organoclay nanocomposite in acetone was examined, and the diffusion coefficients of solvent in the nanocomposites were reduced. The organoclay/Epon 828/Y-60 and organoclay/Epon 828/D400 nanocomposite were used to make coatings on an Al surface. The anticorrosion properties of the nanocomposite coating were evaluated and discussed. [Copyright &y& Elsevier] AB - Copyright of Progress in Organic Coatings is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - SILICATES KW - GUMS & resins KW - TRANSMISSION electron microscopy KW - Electrochemical impedance spectroscopy KW - Epoxy KW - In situ small-angle X-ray scattering KW - Morphology KW - Nanocomposites KW - Potentiodynamic polarization KW - Solvent diffusion N1 - Accession Number: 11607122; Chen, Chenggang 1; Email Address: chenggang.chen@wpafb.af.mil Khobaib, Mohammad 1 Curliss, David 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0168, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Dayton, OH 45433, USA; Source Info: Sep2003, Vol. 47 Issue 3/4, p376; Subject Term: POLYMERS; Subject Term: SILICATES; Subject Term: GUMS & resins; Subject Term: TRANSMISSION electron microscopy; Author-Supplied Keyword: Electrochemical impedance spectroscopy; Author-Supplied Keyword: Epoxy; Author-Supplied Keyword: In situ small-angle X-ray scattering; Author-Supplied Keyword: Morphology; Author-Supplied Keyword: Nanocomposites; Author-Supplied Keyword: Potentiodynamic polarization; Author-Supplied Keyword: Solvent diffusion; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/S0300-9440(03)00130-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11607122&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Voevodin, N.N. AU - Balbyshev, V.N. AU - Khobaib, M. AU - Donley, M.S. T1 - Nanostructured coatings approach for corrosion protection JO - Progress in Organic Coatings JF - Progress in Organic Coatings Y1 - 2003/09// VL - 47 IS - 3/4 M3 - Article SP - 416 SN - 03009440 AB - Nanostructured surface treatment coatings based on the Self-assembled Nanophase Particle (SNAP) approach were investigated as potential replacement for chromate-based surface treatments on aircraft aluminum alloys. In the traditional sol–gel method, hydrolysis-condensation processes are followed by condensation polymerization upon film application. This process sequence provides a low temperature route to the preparation if thin coatings which are readily applied to most metallic substrates. The recent discovery of a method of forming functionalized silica nanoparticles in situ in an aqueous sol–gel process, and then cross-linking the nanoparticles to form a thin film, is an excellent example of a nanoscience approach to coatings. This Self-assembled Nanophase Particle (SNAP) process can be used to form thin, dense protective organic surface treatment coatings on Al aerospace alloys. The ability to design coating components from the molecular level upward offers tremendous potential for creating multifunctional coatings.The important components of Al alloy corrosion inhibition by chromate are storage and release of CrVI species, inhibition of cathodic reactions (primarily oxygen reduction), and inhibition of attack at active sites in the alloy. Unlike chromate-based treatments, current SNAP coatings provide barrier-type corrosion resistance but do not have the ability to leach corrosion inhibitors upon coating damage and minimize corrosion of the unprotected area. In this study, organic inhibitors were tested for corrosion protection of aluminum alloys in combination with the (SNAP). Scanning Vibrating Electrode Technique, anodic polarization, electrochemical impedance spectroscopy, and salt spray test were used to study this new approach for chromate replacement. [Copyright &y& Elsevier] AB - Copyright of Progress in Organic Coatings is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NANOSTRUCTURED materials KW - SURFACE coatings KW - HYDROLYSIS KW - ORGANIC compounds KW - Nanostructured coatings KW - Self-assembled nanophase particle KW - Sol–gel N1 - Accession Number: 11607126; Voevodin, N.N. 1,2; Email Address: natasha.voevodin@afrl.af.mil Balbyshev, V.N. 1,3 Khobaib, M. 1,2 Donley, M.S. 1; Affiliation: 1: Air Force Research laboratory, Materials and Manufacturing Directorate, AFRL/MLBT, Coatings Research Group, Wright-Patterson Air Force Base, OH, USA 2: University of Dayton Research Institute, 300 College Park Drive, Dayton, OH 45469-0168, USA 3: Universal Technology Corporation, 1270 North Fairfield Road, Dayton, OH 45432-2600, USA; Source Info: Sep2003, Vol. 47 Issue 3/4, p416; Subject Term: NANOSTRUCTURED materials; Subject Term: SURFACE coatings; Subject Term: HYDROLYSIS; Subject Term: ORGANIC compounds; Author-Supplied Keyword: Nanostructured coatings; Author-Supplied Keyword: Self-assembled nanophase particle; Author-Supplied Keyword: Sol–gel; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; Number of Pages: 8p; Document Type: Article L3 - 10.1016/S0300-9440(03)00131-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11607126&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Johnson, Joel A. AU - Heidenreich, John J. AU - Mantz, Robert A. AU - Baker, Paul M. AU - Donley, Michael S. T1 - A multiple-scattering model analysis of zinc oxide pigment for spacecraft thermal control coatings JO - Progress in Organic Coatings JF - Progress in Organic Coatings Y1 - 2003/09// VL - 47 IS - 3/4 M3 - Article SP - 432 SN - 03009440 AB - Space assets inhabit a harsh thermal environment in which the high intensity of direct solar radiation can potentially raise temperatures to harmful levels. Thermal management is obtained through the use of radiators coated with thermal control coatings (TCCs) that diffusely reflect the sun’s high energy visible (VIS) and near infrared (NIR) radiation, while emitting infrared (IR) energy as a method of radiatively cooling. The current state-of-the-art TCC system utilizes a potassium silicate binder and zinc oxide (ZnO) pigment to maintain solar reflectance over a long exposure time. We are investigating improvements to TCCs that will have greater initial performance and significantly better end-of-life properties. We have utilized modeling techniques based upon Mie scattering to determine the theoretical scattering efficiency limits of the currently used materials. An optimized TCC would attain maximum diffuse solar reflectance at a lower film thickness and reduce the pigment volume concentration (PVC) required. These factors would contribute to a reduction in overall weight and possibly extend the durability of the system to longer time scales. Our results of modeling ZnO pigment embedded in a matrix similar to that of potassium silicate under solar irradiance conditions indicate that a narrow particle size distribution centered at 0.35 μm would provide the highest overall scattering coefficients, ranging from 0.75 μm−1 at 1000 nm to 5.0 μm−1 at 380 nm wavelengths. These results indicated that a significant improvement, 2–10 times dependent upon wavelength, in the scattering efficiency of ZnO-based TCCs can be realized by utilizing an optimized particle size distribution rather than the currently used size distribution. [Copyright &y& Elsevier] AB - Copyright of Progress in Organic Coatings is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE astronomy KW - SPACE environment KW - SOLAR radiation KW - SURFACE coatings KW - Light scattering efficiency KW - Mie scattering KW - Thermal control coating KW - Zinc oxide pigment N1 - Accession Number: 11607128; Johnson, Joel A. 1; Email Address: joel.johnson@wpafb.af.mil Heidenreich, John J. 1 Mantz, Robert A. 1 Baker, Paul M. 2 Donley, Michael S. 1; Affiliation: 1: Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB, Dayton, OH 45433-7750, USA 2: Department of Physics, Wright State University, Dayton, OH 45435-0001, USA; Source Info: Sep2003, Vol. 47 Issue 3/4, p432; Subject Term: SPACE astronomy; Subject Term: SPACE environment; Subject Term: SOLAR radiation; Subject Term: SURFACE coatings; Author-Supplied Keyword: Light scattering efficiency; Author-Supplied Keyword: Mie scattering; Author-Supplied Keyword: Thermal control coating; Author-Supplied Keyword: Zinc oxide pigment; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 11p; Document Type: Article L3 - 10.1016/S0300-9440(03)00133-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11607128&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mayberry, C.S. AU - Reinhardt, K.C. AU - Kreifels, T.L. T1 - Monolithic crystalline multijunction solar cell development and analysis at the US Air Force research laboratory JO - Renewable Energy: An International Journal JF - Renewable Energy: An International Journal Y1 - 2003/09// VL - 28 IS - 11 M3 - Article SP - 1729 SN - 09601481 AB - As satellite payload electrical power system requirements continue to grow, satellite systems employing flat panel arrays have reached limits set by either on-orbit dynamics that limit the size and shape of the deployed array, mass constraints set by the launch vehicle, or by the limits set by the volume constraints of the launch shroud. This has caused several satellite programs to approach power margin limits early in the design cycle, and to either compromise on satellite capabilities or perform costly redesigns. A very leveraging parameter for raising satellite power levels and reducing costs is the efficiency of the solar cells employed by satellite systems. State of the art efficiencies have reached 26.5% efficiency at load, and 30.1% for prototype cells, and solar arrays using GaAs based multijunction solar cells have achieved deployed solar array power densities of 70 W/kg and stowed volume power densities of 8 kW/m3. A simplified approach to the unwieldy dark current electrical analysis of multijunction solar cells has been developed, correlated with the performance of dual and triple junction solar cells, and explains ideality factors and reverse saturation currents that appear large. It was found that introducing a fourth junction with modest performance could raise the efficiency of multijunction solar cells to 31.5% efficiency at load, raise total power levels to 22 kW, raise the power densities to 100 W/kg and 9 kW/m3 with no impact to the configuration or operation of satellite solar arrays. [Copyright &y& Elsevier] AB - Copyright of Renewable Energy: An International Journal is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR cells KW - SOLAR energy N1 - Accession Number: 9402304; Mayberry, C.S. 1; Email Address: mayberry@plk.af.mil Reinhardt, K.C. 1 Kreifels, T.L. 2; Affiliation: 1: Spacecraft Component Technologies Branch, Air Force Research Laboratory, AFRL/VSSV Space Vehicles Directorate , 87117-5776 Kirtland Air Force Base, NM, USA 2: Space and Aeronautics Technology Division, Jackson and Tull, 87106 Albuquerque, NM, USA; Source Info: Sep2003, Vol. 28 Issue 11, p1729; Subject Term: SOLAR cells; Subject Term: SOLAR energy; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; NAICS/Industry Codes: 237130 Power and Communication Line and Related Structures Construction; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 221114 Solar Electric Power Generation; Number of Pages: 12p; Document Type: Article L3 - 10.1016/S0960-1481(02)00215-X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9402304&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Qian, X.-M. AU - Zhang, T. AU - Chang, C. AU - Wang, P. AU - Ng, C. Y. AU - Yu-Hui Chiu AU - Levandier, Dale J. AU - Miller, J. Scott AU - Dressler, Rainer A. AU - Baer, Tomas AU - Peterka, Darcy S. T1 - High-resolution state-selected ion-molecule reaction studies using pulsed field ionization photoelectron-secondary ion coincidence method. JO - Review of Scientific Instruments JF - Review of Scientific Instruments Y1 - 2003/09// VL - 74 IS - 9 M3 - Article SP - 4096 PB - American Institute of Physics SN - 00346748 AB - We have developed an octopole-quadrupole photoionization apparatus at the Advanced Light Source for absolute integral cross-section measurements of rovibrational-state-selected ion-molecule reactions. This apparatus consists of a high-resolution photoionization ion source, a wired ion gate lens, a dual radio-frequency (rf) octopole ion guide reaction gas cell, and a quadrupole mass spectrometer for reactant and product ion detection. The unique feature of this apparatus is the implementation of the high-resolution pulsed field ionization-photoelectron (PFI-PE)-photoion coincidence (PFI-PEPICO) technique, which has allowed the rotational-state selection of diatomic ions for ion-molecule reaction studies. The novel application of the wired ion gate lens for the rejection of false coincidence background ions is described. This application, along with the differential-ion-gate scheme, has made possible the measurements of rovibrational-state-selected absolute integral reaction cross sections for ion-molecule collisions using the PFI-PE-secondary ion coincidence (PFI-PESICO) method. The successful measurement of absolute state-selected cross sections for H[sub 2][sup +](X,v[sup +],N[sup +])+Ar(Ne) with v[sup +] up to 17 [the third to the last vibrational state of H[sub 2][sup +](X)] demonstrates the high sensitivity of this differential-ion-gate PFI-PESICO method. In order to gain a detailed understanding and to obtain optimal performance of the wired ion gate lens for PFI-PESICO measurements, we have carried out ion trajectory calculations of reactant ions between the photoionization region and the rf-octopole ion guide. On the basis of these calculations, possible future improvements for the application of this differential-ion-gate PFI-PESICO scheme are discussed. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTOIONIZATION KW - ION sources KW - LIGHT sources KW - PHOTOCHEMISTRY KW - ADVANCED Light Source (Company) N1 - Accession Number: 10612651; Qian, X.-M. 1 Zhang, T. 1 Chang, C. 1 Wang, P. 1 Ng, C. Y. 1; Email Address: cyng@chem.ucdavis.edu Yu-Hui Chiu 2 Levandier, Dale J. 2 Miller, J. Scott 3 Dressler, Rainer A. 3; Email Address: Rainer.Dressler@hanscorn.af.mil Baer, Tomas 4 Peterka, Darcy S. 5; Affiliation: 1: Department of Chemistry University of California at Davis, One Shields Avenue, Davis, California 95616. 2: Institute for Scientific Research, Boston College, Newton, Massachusetts 02159. 3: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01 731-3010. 4: Department of Chemistry, The University of North Carolina, Chapel Hill, North Carolina 2 7599-3290. 5: Chemical Science Division, Lawrence Berkeley National Laboratory; Berkeley California 94720.; Source Info: Sep2003, Vol. 74 Issue 9, p4096; Subject Term: PHOTOIONIZATION; Subject Term: ION sources; Subject Term: LIGHT sources; Subject Term: PHOTOCHEMISTRY; Company/Entity: ADVANCED Light Source (Company); Number of Pages: 14p; Document Type: Article L3 - 10.1063/1.1599071 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10612651&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Altrock, Richard C. T1 - Use of ground-based coronal data to predict the date of solar-cycle maximum. JO - Solar Physics JF - Solar Physics Y1 - 2003/09// VL - 216 IS - 1/2 M3 - Article SP - 343 EP - 352 PB - Springer Science & Business Media B.V. SN - 00380938 AB - Prediction of the exact date of the maximum of the 11-year solar activity cycle is a matter of disagreement among solar scientists and of some importance to satellite operators, space-system designers, etc. Most predictions are based on physical conditions occurring at or before the solar-cycle minimum preceding the maximum in question. However, another indicator of the timing of the maximum occurs early in the rise phase of the solar cycle. A study of the variation over two previous solar cycles of coronal emission features in Fe xiv from the National Solar Observatory at Sacramento Peak has shown that, prior to solar maximum, emission features appear above 50° latitude in both hemispheres and begin to move towards the poles at a rate of 8° to 11° of latitude per year. This motion is maintained for a period of 3 or 4 years, at which time the emission features disappear near the poles. This phenomenon has been referred to as the `Rush to the Poles'. These observations show that the maximum of solar activity, as seen in the sunspot number, occurs approximately 19 ± 2 months before the features reach the poles. In 1997, Fe xiv emission features appeared near 55° latitude, and began to move towards the poles. Using the above historical data from cycles 21 and 22, we will see how the use of progressively more data from cycle 23 affects the prediction of the date of solar maximum. The principal conclusion is that the date of solar maximum for cycle 23 could be predicted to within 6 months as early as 1997. For solar cycle 24, when this phenomenon first becomes apparent later this decade, the average parameters for cycles 21–23 can be used to predict the date of solar maximum. [ABSTRACT FROM AUTHOR] AB - Copyright of Solar Physics is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR atmosphere KW - SOLAR cycle KW - SOLAR activity KW - SCIENTISTS KW - LATITUDE KW - SOLAR corona N1 - Accession Number: 16859283; Altrock, Richard C. 1; Email Address: altrock@nso.edu; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, National Solar Observatory, Sacramento Peak, Sunspot, NM 88349, U.S.A.; Source Info: Sep2003, Vol. 216 Issue 1/2, p343; Subject Term: SOLAR atmosphere; Subject Term: SOLAR cycle; Subject Term: SOLAR activity; Subject Term: SCIENTISTS; Subject Term: LATITUDE; Subject Term: SOLAR corona; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16859283&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Daniels, M.J. AU - King, D. AU - Phillips, B. AU - Zabinski, J.S. AU - Bilello, J.C. T1 - Nature of the as-deposited state of AlCuFeCr PVD coatings JO - Thin Solid Films JF - Thin Solid Films Y1 - 2003/09// VL - 440 IS - 1/2 M3 - Article SP - 87 SN - 00406090 AB - The present work reports on the characterization of AlCuFeCr based quasicrystalline approximant films produced via radio frequency and direct current sputtering from a powder composite target. Previous reports on similar Al-transition metal sputtered films indicated that amorphous coatings were produced at ambient temperatures. Annealing was required to develop the quasicrystalline approximant microstructure via a phase transformation. In this work, the nature of as-deposited AlCuFeCr coatings was studied using high-resolution grazing incidence X-ray scattering, radial distribution function analysis and simulated diffraction patterns based on a Scherrer line broadening model. Agreement was observed between these methods for an ordered approximant grain size of 25–50 A˚. A wide processing window was observed to produce as-deposited AlCuFeCr quasicrystalline approximant films. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALLINE electric field KW - SPUTTERING (Physics) KW - PHYSICAL vapor deposition KW - Physical vapor deposition KW - Quasicrystal KW - Radial distribution function N1 - Accession Number: 10504470; Daniels, M.J. 1; Email Address: mdaniels@umich.edu King, D. 2 Phillips, B. 3 Zabinski, J.S. 3 Bilello, J.C. 1; Affiliation: 1: Center for Nanomaterials Science, Department of Materials Science, University of Michigan, 2300 Hayward Street, Ann Arbor, MI 48109, USA 2: Technology Assessment and Transfer, Inc., 133 Defense Highway, Suite 212, Annapolis, MD 21401, USA 3: Air Force Research Laboratory, 2941 P. Street, Suite 1, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Sep2003, Vol. 440 Issue 1/2, p87; Subject Term: CRYSTALLINE electric field; Subject Term: SPUTTERING (Physics); Subject Term: PHYSICAL vapor deposition; Author-Supplied Keyword: Physical vapor deposition; Author-Supplied Keyword: Quasicrystal; Author-Supplied Keyword: Radial distribution function; Number of Pages: 7p; Document Type: Article L3 - 10.1016/S0040-6090(03)00831-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10504470&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McDaniel, F.D. AU - Doyle, B.L. AU - Rossi, P. AU - Buller, D.L. AU - Hamm, R.W. AU - Schone, H. T1 - The Tandem-RFQ Linac Booster at Sandia National Laboratories. JO - AIP Conference Proceedings JF - AIP Conference Proceedings Y1 - 2003/08/26/ VL - 680 IS - 1 M3 - Article SP - 986 PB - American Institute of Physics SN - 0094243X AB - A booster linac based on the Radio Frequency Quadrupole (RFQ linac) has been put into routine operation on the 6.5 MV EN tandem accelerator at the Sandia National Laboratories (SNL) Ion Beam Materials Research Lab (IBMRL) for Radiation Effects Microscopy (REM) experiments with high energy, heavy ion beams. The booster linac consists of two RFQ stages that accelerate heavy ions with m/q < 8 from 0.25 MeV/amu up to 1.22 MeV/amu in the first stage and to 1.90 MeV/amu in the second stage to produce high Linear Energy Transfer (LET) ions for REM. This RFQ linac has a total length of 6.0 meters and is installed on a new experimental beam line at the SNL IBMRL to measure single-event upset (SEU) cross-sections of integrated circuits (ICs) and to perform radiation hardness research using REM with the associated Ion Electron Emission Microscope (IEEM). This paper presents the recent beam measurement results from operation of the RFQ linac with beams from silicon to gold and compares these results with theoretical beam dynamics calculations. It also describes the details of the experiments to measure SEU cross-sections and IEEM. © 2003 American Institute of Physics [ABSTRACT FROM AUTHOR] AB - Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAVY ion accelerators KW - RADIO frequency KW - QUADRUPOLES KW - PHYSICS laboratories KW - ALBUQUERQUE (N.M.) KW - UNITED States N1 - Accession Number: 11062798; McDaniel, F.D. 1,2 Doyle, B.L. 1 Rossi, P. 1,3 Buller, D.L. 1 Hamm, R.W. 4 Schone, H. 1,5; Affiliation: 1: Ion Beam Materials Research Laboratory, Sandia National Laboratories, NM 2: Ion Beam Modification and Analysis Laboratory, Dept. of Physics, University of North Texas, Denton, TX 3: University of Padova and INFN, Italy 4: AccSys Technology, Inc, CA 5: Air Force Research Laboratory - VSSE, NM; Source Info: 2003, Vol. 680 Issue 1, p986; Subject Term: HEAVY ion accelerators; Subject Term: RADIO frequency; Subject Term: QUADRUPOLES; Subject Term: PHYSICS laboratories; Subject Term: ALBUQUERQUE (N.M.); Subject Term: UNITED States; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 5p; Document Type: Article L3 - 10.1063/1.1619874 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11062798&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boatz, Jerry A. AU - Christe, Karl O. AU - Dixon, David A. AU - Fir, Barbara A. AU - Gerken, Michael AU - Gnann, Robert Z. AU - Mercier, Hélène P.A. AU - Schrobilgen, Gary J. T1 - Synthesis, Characterization, and Computational Study of the trans-IO[sub 2]F[sub 5][sup 2-] Anion. JO - Inorganic Chemistry JF - Inorganic Chemistry Y1 - 2003/08/25/ VL - 42 IS - 17 M3 - Article SP - 5282 EP - 5292 SN - 00201669 AB - The combination of CH[sub 3]CN solutions of [N(CH[sub 3])[sub 4]][F] and a mixture of cis- and trans-[N(CH[sub 3])[sub 4]][lO[sub 2]F[sub 4]] produces the novel trans-IO[sub 2]F[sub 5, sup 2-] anion, Under the given conditions, only the trans-IO[sub 2]F[sub 4, sup -] anion acts as a fluoride ion acceptor, thus allowing the separation of isomerically pure, soluble cis-IO[sub 2]F[sub 4, sup -] from insoluble trans-IO[sub 2]F[sub 5, sup 2-]. The trans-IO[sub 2]F[sub 5, sup 2-] and cis-IO[sub 2]F[sub 4, sup -] anions were characterized by infrared and Raman spectroscopy and theoretical calculations at the LDFT and HF levels of theory. The trans-IO[sub 2]F[sub 5, sup 2-] anion has a pentagonal-bipyramidal geometry with the two oxygen atoms occupying the axial positions. It represents the first example of a heptacoordinated main group AO[sub 2]X[sub 5] species and completes the series of pentagonal-bipyramidal iodine fluoride and oxide fluoride species. The geometries of the pentagonal-bipyramidal series IO[sub 2]F[sub 5, sup 2-], IOF[sub 5, sup 2-], IF[sub 5, sup 2-] , IOF[sub 6, sup -], IF[sub 6, sup -], and IF[sub 7] and the corresponding octahedral series IO[sub 2]F[sub 4, sup -], IOF[sub 4, sup -], IF[sub 4, sup -], IOF[sub 5], IF[sub 5], and IF[sub 6, sup +] were calculated by identical methods. It is shown how the ionic charge, the oxidation state of the iodine atom, the coordination number, and the replacement of fluorine ligands by either an oxygen ligand or a free valence electron pair influence the stuctures and bonding of these species. [ABSTRACT FROM AUTHOR] AB - Copyright of Inorganic Chemistry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXO compounds KW - ANIONS KW - IODINE fluorides N1 - Accession Number: 10829901; Boatz, Jerry A. 1 Christe, Karl O. 1,2; Email Address: karl.christe@edwards.af.mil Dixon, David A. 3 Fir, Barbara A. 4; Email Address: michael.gerken@uleth.ca Gerken, Michael 4 Gnann, Robert Z. 2 Mercier, Hélène P.A. 4 Schrobilgen, Gary J. 4; Email Address: schrobil@mcmaster.ca; Affiliation: 1: Laker Hydrocarbon Research Institute, University of Southern California, University Park, Los Angeles, California 2: Air Force Research Laboratory, Edwards Air Force Base, California 3: Department of Chemistry, McMaster University, Canada 4: The Fundamental Sciences Division, Pacific Northwest National Laboratory, Washington; Source Info: 8/25/2003, Vol. 42 Issue 17, p5282; Subject Term: OXO compounds; Subject Term: ANIONS; Subject Term: IODINE fluorides; Number of Pages: 11p; Illustrations: 6 Diagrams, 6 Charts, 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10829901&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sorescu AU - D. C. AU - Boatz AU - J. A. AU - Thompson AU - D. L. T1 - First-Principles Calculations of the Adsorption of Nitromethane and 1,1-Diamino-2,2-dinitroethylene (FOX-7) Molecules on the Al(111) Surface. JO - Journal of Physical Chemistry B JF - Journal of Physical Chemistry B Y1 - 2003/08/22/ VL - 107 IS - 34 M3 - Article SP - 8953 SN - 15206106 AB - First-principles calculations that are based on spin-unrestricted density functional theory and the generalized gradient approximation have been used to study the adsorption of nitromethane and 1,1-diamino-2,2-dinitroethylene molecules on the Al(111) surface. The calculations employ (3 × 3) aluminum slab geometries and three-dimensional periodic boundary conditions. On the basis of these calculations, we have determined that both dissociative and nondissociative adsorption mechanisms are possible, depending on the molecular orientation and the particular surface sites involved. In the case of dissociative chemisorption, O-atom abstraction by Al surface atoms has been determined to be the dominant mechanism. The dissociated O atom forms strong Al-O bonds with the neighboring Al sites around the dissociation sites. In addition, the radical species obtained as a result of O-atom elimination remains bonded to the surface. In some instances, both O atoms of the nitro group dissociate and oxidize the aluminum surface. Finally, for the case of nondissociative adsorption, various N-O-Al bridge-type bonding configurations can be formed. On the basis of the data provided from these studies, it can be concluded that oxidation of the aluminum surface readily occurs, either by partial or complete dissociation of the O atoms from the NO2 group. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DENSITY functionals KW - NITROMETHANE KW - CHEMISORPTION N1 - Accession Number: 11169892; Sorescu D. C. 1 Boatz J. A. 1 Thompson D. L. 1; Affiliation: 1: U.S. Department of Energy, National Energy Technology Laboratory, P.O. Box 10940, Pittsburgh, Pennsylvania 15236, Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, Air Force Research Laboratory, AFRL/PRSP, Edwards Air Force Base, California 93524, and Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078; Source Info: Aug2003, Vol. 107 Issue 34, p8953; Subject Term: DENSITY functionals; Subject Term: NITROMETHANE; Subject Term: CHEMISORPTION; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11169892&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kwiatkowski, K. AU - Lyke, J.C. AU - Wojnarowski, R.J. AU - Beche, J.-F. AU - Fillion, R. AU - Kapusta, C. AU - Millaud, J. AU - Saia, R. AU - Wilke, M.D. T1 - 3D interconnect architecture for high-bandwidth massively paralleled imager JO - Nuclear Instruments & Methods in Physics Research Section A JF - Nuclear Instruments & Methods in Physics Research Section A Y1 - 2003/08/21/ VL - 509 IS - 1-3 M3 - Article SP - 200 SN - 01689002 AB - The proton radiography group at LANL is developing a fast (5×106 frames/s or 5 megaframe/s) multi-frame imager for use in dynamic radiographic experiments with high-energy protons. The mega-pixel imager will acquire and process a burst of 32 frames captured at inter-frame time ∼200 ns. Real time signal processing and storage requirements for entire frames, of rapidly acquired pixels impose severe demands on the space available for the electronics in a standard monolithic approach. As such, a 3D arrangement of detector and circuit elements is under development. In this scheme, the readout integrated circuits (ROICs) are stacked vertically (like playing cards) into a cube configuration. Another die, a fully depleted pixel photo-diode focal plane array (FPA), is bump bonded to one of the edge surfaces formed by the resulting ROIC cube. Recently, an assembly of the proof-of-principle test cube and sensor has been completed. [Copyright &y& Elsevier] AB - Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIOGRAPHY KW - PROTONS KW - IMAGING systems in medicine KW - 3D interconnect KW - Fast imaging KW - High-density packaging KW - Proton radiography KW - Vertical stacking N1 - Accession Number: 10511165; Kwiatkowski, K. 1; Email Address: krisk@lanl.gov Lyke, J.C. 2 Wojnarowski, R.J. 3 Beche, J.-F. 4 Fillion, R. 3 Kapusta, C. 3 Millaud, J. 4 Saia, R. 3 Wilke, M.D. 1; Affiliation: 1: Los Alamos National Laboratory, Mail stop H803, Los Alamos, NM 87545, USA 2: Air Force Research Laboratory, Kirtland AFB, NM, USA 3: General Electric, Global Research Center, Schenectady, NY, USA 4: Lawrence Berkeley National Laboratory, Berkeley, CA, USA; Source Info: Aug2003, Vol. 509 Issue 1-3, p200; Subject Term: RADIOGRAPHY; Subject Term: PROTONS; Subject Term: IMAGING systems in medicine; Author-Supplied Keyword: 3D interconnect; Author-Supplied Keyword: Fast imaging; Author-Supplied Keyword: High-density packaging; Author-Supplied Keyword: Proton radiography; Author-Supplied Keyword: Vertical stacking; Number of Pages: 6p; Document Type: Article L3 - 10.1016/S0168-9002(03)01571-7 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10511165&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Van Doren, Jane M. AU - McSweeney, Sarah A. AU - Hargus, Matthew D. AU - Kerr, Donna M. AU - Miller, Thomas M. AU - Arnold, Susan T. AU - Viggiano, A.A. T1 - Electron attachment and detachment: cyclo-C4F4Cl2 JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2003/08/15/ VL - 228 IS - 2/3 M3 - Article SP - 541 SN - 13873806 AB - Electron attachment to 1,2-dichlorotetrafluorocyclobutene (c-C4F4Cl2) and electron detachment from the parent anion (c-C4F4Cl2−) have been studied over a temperature range from 295 to 556 K in a flowing-afterglow Langmuir-probe (FALP) apparatus. Electron attachment to c-C4F4Cl2 over this temperature range yields only the parent anion in a helium buffer gas at 80–160 Pa pressure. The electron attachment rate constant was found to be independent of temperature over the range studied, at a value of (2.4±0.8)×10−7 cm3 s−1, that is, essentially upon every collision. The rate constant for electron detachment from c-C4F4Cl2− is strongly temperature dependent, being imperceptible at room temperature and climbing to a value of 3100±1200 s−1 at 511 K. The equilibrium constant obtained from these data yields the electron affinity (EA) of c-C4F4Cl2 of 0.87±0.08 eV. G3(MP2) and density functional theory (DFT) calculations were carried out for the C4F4Cl2 neutral, anion, and fragments in order to aid in interpreting the experiments. Both the G3(MP2) and DFT calculations yield values for EA(c-C4F4Cl2), 0.79 and 0.93 eV, respectively, that are in good agreement with the experimental value. The calculations also show that there are no open exothermic dissociative electron attachment channels for c-C4F4Cl2. Further, we present structures, atomic charges, dipole moments, heat capacities, and polarizabilities for these molecules. The results are contrasted with previous results on 1,2-dichlorooctafluorocyclohexene (c-C6F8Cl2) and 1,2-dichlorohexafluorocyclopentene (c-C5F6Cl2), both of which possess larger EAs. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - ANIONS KW - DENSITY functionals KW - C4F4Cl2 (1,2-dichlorotetrafluorocyclobutene) KW - Density functional theory KW - Electron affinity KW - Electron attachment KW - Flowing-afterglow Langmuir-probe KW - G3(MP2) KW - Kinetics N1 - Accession Number: 10357813; Van Doren, Jane M. 1 McSweeney, Sarah A. 1 Hargus, Matthew D. 1 Kerr, Donna M. 1 Miller, Thomas M. 2; Email Address: thomas.miller@hanscom.af.mil Arnold, Susan T. 2 Viggiano, A.A. 2; Affiliation: 1: Department of Chemistry, College of the Holy Cross, Worcester, MA 01610-2395, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, 29 Randolph Road VSBXT, Bedford, MA 01731-3010, USA; Source Info: Aug2003, Vol. 228 Issue 2/3, p541; Subject Term: ELECTRONS; Subject Term: ANIONS; Subject Term: DENSITY functionals; Author-Supplied Keyword: C4F4Cl2 (1,2-dichlorotetrafluorocyclobutene); Author-Supplied Keyword: Density functional theory; Author-Supplied Keyword: Electron affinity; Author-Supplied Keyword: Electron attachment; Author-Supplied Keyword: Flowing-afterglow Langmuir-probe; Author-Supplied Keyword: G3(MP2); Author-Supplied Keyword: Kinetics; Number of Pages: 9p; Document Type: Article L3 - 10.1016/S1387-3806(03)00161-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10357813&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mogilevsky, P. AU - Zangvil, A. T1 - Kinetics of oxidation in oxide ceramic matrix composites JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2003/08/15/ VL - 354 IS - 1/2 M3 - Article SP - 58 SN - 09215093 AB - Oxidation of SiC reinforcement is a major factor affecting the environmental stability of SiC reinforced ceramic matrix composites (CMCs) for high temperature applications. A new quantitative model for the oxidation of oxide CMCs with non-oxide reinforcements is described. The proposed model is applied to the experimental results from the literature on oxidation of Al2O3/SiC composites. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXIDE ceramics KW - DYNAMICS KW - Kinetics KW - Oxidation KW - Oxide ceramic matrix N1 - Accession Number: 9907386; Mogilevsky, P. 1,2; Email Address: pavel.mogilevsky@wpafb.af.mil Zangvil, A. 3; Affiliation: 1: Air Force Research Laboratory/MLLN, Wright-Patterson Air Force Base, OH 45433, USA 2: UES Inc., 4401 Dayton-Xenia Rd., Dayton, OH 45432, USA 3: Ceramic Shield Ltd. Misgav Carmiel Technology Incubator, M.P. Misgav 20179, Israel; Source Info: Aug2003, Vol. 354 Issue 1/2, p58; Subject Term: OXIDE ceramics; Subject Term: DYNAMICS; Author-Supplied Keyword: Kinetics; Author-Supplied Keyword: Oxidation; Author-Supplied Keyword: Oxide ceramic matrix; Number of Pages: 9p; Document Type: Article L3 - 10.1016/S0921-5093(02)00872-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9907386&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Karasevskaya, O.P. AU - Ivasishin, O.M. AU - Semiatin, S.L. AU - Matviychuk, Yu.V. T1 - Deformation behavior of beta-titanium alloys JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2003/08/15/ VL - 354 IS - 1/2 M3 - Article SP - 121 SN - 09215093 AB - The cold workability of four solution-treated beta-titanium alloys was determined and related to the initial substructure. Two alloys (TIMETAL-LCB and Ti-15-3), which retained a well-developed subgrain structure after solution treatment, exhibited excellent workability, while those alloys which did not (VT22 and TC6) exhibited inferior ductility. The difference in workability was explained in terms of the variation in strain-accommodation mechanism. Other factors that exacerbated the observed low ductility of the latter two alloys were also identified. These included the occurrence of deformation-induced martensite formation and the development of multi-component textures, both of which may lead to localization of deformation at interphase or grain boundaries and subsequent failure. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - METALS -- Cold working KW - Beta titanium alloys KW - Cold workability KW - Substructure KW - X-ray diffraction N1 - Accession Number: 9907393; Karasevskaya, O.P. 1 Ivasishin, O.M. 1; Email Address: ivas@imp.kiev.ua Semiatin, S.L. 2 Matviychuk, Yu.V. 1; Affiliation: 1: Institute for Metal Physics, 36 Vernadsky Street, 03142 Kiev, Ukraine 2: Air Force Research Laboratory, AFRL/MLLM, 2230 Tenth Street, Suite 1, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Aug2003, Vol. 354 Issue 1/2, p121; Subject Term: TITANIUM alloys; Subject Term: METALS -- Cold working; Author-Supplied Keyword: Beta titanium alloys; Author-Supplied Keyword: Cold workability; Author-Supplied Keyword: Substructure; Author-Supplied Keyword: X-ray diffraction; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 12p; Document Type: Article L3 - 10.1016/S0921-5093(02)00935-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9907393&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roy, Sukesh AU - Meyer, Terrence R. AU - Brown, Michael S. AU - Velur, Viswanathan N. AU - Lucht, Robert P. AU - Gord, James R. T1 - Triple-pump coherent anti-Stokes Raman scattering (CARS): temperature and multiple-species concentration measurements in reacting flows JO - Optics Communications JF - Optics Communications Y1 - 2003/08/15/ VL - 224 IS - 1-3 M3 - Article SP - 131 SN - 00304018 AB - Two types of triple-pump coherent anti-Stokes Raman scattering (CARS) systems for the simultaneous measurement of temperature and multiple-species concentrations are presented. In the first system, the ro-vibrational transitions of N2, O2, and H2 are probed using three narrowband pump beams and a broadband Stokes beam. In the second system, pure rotational transitions of N2/O2 and the ro-vibrational transitions of N2/CO2 are probed using two narrowband pump beams, a broadband pump beam, and a broadband Stokes beam. The use of a broadband pump source in the second CARS system allows rotational and ro-vibrational transitions of different molecules to be probed simultaneously. For both CARS systems, the signals appear at two distinct wavelengths. The CARS signals at the two wavelengths are separated by dichroic mirrors before being detected by two spectrometer-CCD detection systems. For proof-of-concept demonstrations, single-shot and averaged measurements are performed in an atmospheric-pressure hydrogen–air diffusion flame and in a carbon dioxide-seeded, near-adiabatic hydrogen–air flame stabilized over a Hencken burner. These are, to our knowledge, the first reported experiments of triple-pump coherent anti-Stokes Raman scattering for the simultaneous measurement of temperature and multiple-species concentrations. [Copyright &y& Elsevier] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAMAN effect KW - OPTICAL pumping KW - SPECTROMETERS KW - CHARGE coupled devices KW - 52.35.Mw N1 - Accession Number: 10570439; Roy, Sukesh 1; Email Address: sroy@woh.rr.com Meyer, Terrence R. 1 Brown, Michael S. 1 Velur, Viswanathan N. 2 Lucht, Robert P. 3 Gord, James R. 4; Affiliation: 1: Innovative Scientific Solutions Inc., 2766 Indian Ripple Road, Dayton, OH 45440, USA 2: California Institute of Technology, Mail Code: 105-24, Pasadena, CA 91125, USA 3: Department of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA 4: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Aug2003, Vol. 224 Issue 1-3, p131; Subject Term: RAMAN effect; Subject Term: OPTICAL pumping; Subject Term: SPECTROMETERS; Subject Term: CHARGE coupled devices; Author-Supplied Keyword: 52.35.Mw; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/S0030-4018(03)01688-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10570439&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Porter III, W.J. AU - John, R. AU - Olson, S. T1 - Determination of Young’s modulus of grains in a gamma titanium aluminide alloy JO - Scripta Materialia JF - Scripta Materialia Y1 - 2003/08/15/ VL - 49 IS - 4 M3 - Article SP - 327 SN - 13596462 AB - An experimental and analytical process for determining the elastic response of grains in a gamma titanium aluminide alloy was developed. Three-dimensional finite element models were employed to deduce the transversely isotropic properties. The results are compared with those reported for polysynthetically twinned materials. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - FINITE element method KW - Elastic KW - Finite element KW - Polysynthetically twinned materials KW - Titanium aluminide KW - Young’s modulus N1 - Accession Number: 9990998; Porter III, W.J. 1; Email Address: william.porter@wpafb.af.mil John, R. 2 Olson, S. 1; Affiliation: 1: University of Dayton Research Institute (UDRI), Structural Integrity, 300 College Park, Dayton, OH 45469, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/MLLMN), Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Aug2003, Vol. 49 Issue 4, p327; Subject Term: TITANIUM alloys; Subject Term: FINITE element method; Author-Supplied Keyword: Elastic; Author-Supplied Keyword: Finite element; Author-Supplied Keyword: Polysynthetically twinned materials; Author-Supplied Keyword: Titanium aluminide; Author-Supplied Keyword: Young’s modulus; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 6p; Document Type: Article L3 - 10.1016/S1359-6462(03)00280-X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9990998&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wu, J.-H. AU - Sanghavi, M. AU - Sanders, J.H. AU - Voevodin, A.A. AU - Zabinski, J.S. AU - Rigney, D.A. T1 - Sliding behavior of multifunctional composite coatings based on diamond-like carbon JO - Wear JF - Wear Y1 - 2003/08/15/ VL - 255 IS - 7-12 M3 - Article SP - 859 SN - 00431648 AB - The sliding behavior of several coatings based on non-hydrogenated diamond-like carbon (DLC) is described. Coatings were produced by using a magnetron sputter-assisted pulsed laser deposition process developed at the Air Force Research Laboratory. Results are compared for two types of coatings: DLC with WC nanoparticles and DLC with both WC particles and WS2 (“WCS”). Sliding tests were done in air, nitrogen and vacuum and for alternating periods in different environments, e.g., cycling between air and vacuum conditions. The friction force and the signal from an in situ Kelvin probe were monitored during sliding. Friction coefficients ranging from near 0.01 to 0.6 have been observed.The Kelvin probe detected transients lasting from ten minutes to more than one hour. Post-test characterization included SEM/EDS, Raman and TEM. The role of transfer and mixing is discussed. [Copyright &y& Elsevier] AB - Copyright of Wear is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIAMONDS KW - PULSED laser deposition KW - Composite coatings KW - DLC coatings KW - Sliding friction KW - WS2 N1 - Accession Number: 10366904; Wu, J.-H. 1 Sanghavi, M. 1 Sanders, J.H. 2 Voevodin, A.A. 2 Zabinski, J.S. 2 Rigney, D.A. 1; Email Address: rigney.1@osu.edu; Affiliation: 1: Materials Science and Engineering, The Ohio State University, 2041 College Rd., Columbus, OH 43210, USA 2: MLBT, Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB Dayton, OH 45433-7750, USA; Source Info: Aug-Sep2003, Vol. 255 Issue 7-12, p859; Subject Term: DIAMONDS; Subject Term: PULSED laser deposition; Author-Supplied Keyword: Composite coatings; Author-Supplied Keyword: DLC coatings; Author-Supplied Keyword: Sliding friction; Author-Supplied Keyword: WS2; NAICS/Industry Codes: 423940 Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers; NAICS/Industry Codes: 212399 All Other Nonmetallic Mineral Mining; NAICS/Industry Codes: 414410 Jewellery and watch merchant wholesalers; Number of Pages: 10p; Document Type: Article L3 - 10.1016/S0043-1648(03)00086-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10366904&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nelson, R.L. AU - Haus, J.W. T1 - One-dimensional photonic crystals in reflection geometry for optical applications. JO - Applied Physics Letters JF - Applied Physics Letters Y1 - 2003/08/11/ VL - 83 IS - 6 M3 - Article SP - 1089 PB - American Institute of Physics SN - 00036951 AB - We investigate some properties of one-dimensional photonic band-gap materials that have the possibility of total internal reflection at one or more interfaces. The proposed structures have application for electro-optic modulation, sensing, and other optical devices. A specific example for electro-optic modulation is presented. Certain advantages of this arrangement may make it a desired geometry for specific applications like sensing. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHOTONICS KW - CRYSTALS N1 - Accession Number: 10465417; Nelson, R.L. 1; Email Address: robert.nelson@wpafb.af.mil Haus, J.W. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate 2: Electro-Optics Program, University of Dayton; Source Info: 8/11/2003, Vol. 83 Issue 6, p1089; Subject Term: PHOTONICS; Subject Term: CRYSTALS; Number of Pages: 3p; Illustrations: 1 Diagram, 2 Graphs; Document Type: Article L3 - 10.1063/1.1600841 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10465417&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kung-Hau Ding AU - Leung Tsang T1 - A sparse matrix iterative approach for modeling tree scattering. JO - Microwave & Optical Technology Letters JF - Microwave & Optical Technology Letters Y1 - 2003/08/05/ VL - 38 IS - 3 M3 - Article SP - 198 EP - 202 SN - 08952477 AB - In this paper we present a computational electromagnetic model for tree scattering at VHF/UHF frequencies. A structure model with dielectric cylinders is being used to simulate trees with bare branches. The method of moments (MoM) solution of the volume integral equation is computed for the tree scattering signature. An efficient numerical algorithm based on the sparse matrix iterative approach (SMIA) is used to solve the matrix equation. The SMIA decomposes the impedance matrix into a sparse matrix for the near interactions, and a complementary matrix for the far interactions among the cylindrical sub-cells of the tree structure. Using a direct sparse solver to estimate the strong interaction part, we iteratively include the weak interaction contribution in order to update the solution. The key feature of the SMIA approach is that very little iteration is required to obtain convergent solutions. We have applied the SMIA tree scattering model to calculate scattering from various simulated trees with up to several hundreds of branches. Solutions obtained from the SMIA method agree very well with the solutions obtained using exact matrix inversion and the conjugate gradient method (CGM). Compared to the CGM, the SMIA approach reduces the number of iterations by a factor of more than a hundred and provides a much faster numerical solution scheme for computing tree scattering. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 38: 198–202, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11014 [ABSTRACT FROM AUTHOR] AB - Copyright of Microwave & Optical Technology Letters is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ITERATIVE methods (Mathematics) KW - NUMERICAL analysis KW - S-matrix theory KW - SCATTERING (Physics) KW - ELECTROMAGNETIC waves KW - CONJUGATE gradient methods KW - RADAR cross sections KW - conjugate gradient method KW - discrete dipole approximation KW - method of moments KW - radar cross section KW - sparse matrix iterative approach KW - tree scattering KW - VHF/UHF KW - volume integral equation N1 - Accession Number: 13509023; Kung-Hau Ding 1 Leung Tsang 2; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, AFRL/SNHE, Hanscom AFB,MA 01731 2: Department of Electrical Engineering, University of Washington, Seattle, WA 98195; Source Info: 8/5/2003, Vol. 38 Issue 3, p198; Subject Term: ITERATIVE methods (Mathematics); Subject Term: NUMERICAL analysis; Subject Term: S-matrix theory; Subject Term: SCATTERING (Physics); Subject Term: ELECTROMAGNETIC waves; Subject Term: CONJUGATE gradient methods; Subject Term: RADAR cross sections; Author-Supplied Keyword: conjugate gradient method; Author-Supplied Keyword: discrete dipole approximation; Author-Supplied Keyword: method of moments; Author-Supplied Keyword: radar cross section; Author-Supplied Keyword: sparse matrix iterative approach; Author-Supplied Keyword: tree scattering; Author-Supplied Keyword: VHF/UHF; Author-Supplied Keyword: volume integral equation; Number of Pages: 5p; Illustrations: 1 Diagram, 3 Charts, 5 Graphs; Document Type: Article L3 - 10.1002/mop.11014 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13509023&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Johnson, G. R. AU - Spain, J. C. T1 - Evolution of catabolic pathways for synthetic compounds: bacterial pathways for degradation of 2,4-dinitrotoluene and nitrobenzene. JO - Applied Microbiology & Biotechnology JF - Applied Microbiology & Biotechnology Y1 - 2003/08// VL - 62 IS - 2/3 M3 - Article SP - 110 EP - 123 PB - Springer Science & Business Media B.V. SN - 01757598 AB - The pathways for 2,4-dinitrotoluene (2,4-DNT) and nitrobenzene offer fine illustrations of how the ability to assimilate new carbon sources evolves in bacteria. Studies of the degradation pathways provide insight about two principal strategies for overcoming the metabolic block imposed by nitro- substituents on aromatic compounds. The 2,4-DNT pathway uses novel oxygenases for oxidative denitration and subsequent ring-fission. The nitrobenzene pathway links facile reduction of the nitro- substituent, a novel mutase enzyme, and a conserved operon encoding aminophenol degradation for mineralization of nitrobenzene. Molecular genetic analysis with comparative biochemistry reveals how the pathways were assembled in response to the recent appearance of the two synthetic chemicals in the biosphere. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Microbiology & Biotechnology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DINITROTOLUENES KW - NITROBENZENE KW - BACTERIA KW - AROMATIC compounds KW - BIOCHEMISTRY KW - CHEMICALS N1 - Accession Number: 16694954; Johnson, G. R. 1 Spain, J. C. 1; Email Address: jim.spain@tyndall.af.mil; Affiliation: 1: Air Force Research Laboratory, United States Air Force, Tyndall Air Force Base, FL 32403, USA; Source Info: Aug2003, Vol. 62 Issue 2/3, p110; Subject Term: DINITROTOLUENES; Subject Term: NITROBENZENE; Subject Term: BACTERIA; Subject Term: AROMATIC compounds; Subject Term: BIOCHEMISTRY; Subject Term: CHEMICALS; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; Number of Pages: 14p; Illustrations: 2 Diagrams, 2 Charts; Document Type: Article L3 - 10.1007/s00253-003-1341-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16694954&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucia, David J. AU - King, Paul I. AU - Beran, Philip S. T1 - Reduced order modeling of a two-dimensional flow with moving shocks JO - Computers & Fluids JF - Computers & Fluids Y1 - 2003/08// VL - 32 IS - 7 M3 - Article SP - 917 SN - 00457930 AB - The objective of this paper is to demonstrate the ability of proper orthogonal decomposition, in combination with domain decomposition, to produce accurate reduced order models (ROMs) for two-dimensional high-speed flows with moving shock waves. To demonstrate this ability, a blunt body flow with quasi-steady shock motion is considered. The blunt body flow contains a strong bow shock that is moved via a change in inlet Mach number and angle of attack. Accuracy is quantified by comparing surface pressures obtained from the ROMs with those from the full order simulation under the same free stream conditions. The order reduction, and computational performance of the ROM is also quantified relative to the full order simulation. The robustness of the ROM to varying flow parameters is explored. A non-Galerkin quasi-implicit steady state implementation is considered. [Copyright &y& Elsevier] AB - Copyright of Computers & Fluids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHOCK waves KW - ORTHOGONAL decompositions KW - Domain decomposition KW - High-speed flow KW - Moving shock waves KW - Proper orthogonal decomposition KW - Reduced order modeling N1 - Accession Number: 9051060; Lucia, David J. 1 King, Paul I. 1; Email Address: paul.king@afit.edu Beran, Philip S. 2; Affiliation: 1: Air Force Institute of Technology, AFIT/ENY, 2950 P Street, Building 640, WPAFB, OH 45433, USA 2: Air Force Research Laboratory, AFRL/VASD, 2210 Eight Street, Building 146, WPAFB, OH 45433, USA; Source Info: Aug2003, Vol. 32 Issue 7, p917; Subject Term: SHOCK waves; Subject Term: ORTHOGONAL decompositions; Author-Supplied Keyword: Domain decomposition; Author-Supplied Keyword: High-speed flow; Author-Supplied Keyword: Moving shock waves; Author-Supplied Keyword: Proper orthogonal decomposition; Author-Supplied Keyword: Reduced order modeling; Number of Pages: 22p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9051060&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Malyutenko, V.K. AU - Michailovskaya, K.V. AU - Yu Malyutenko, O. AU - Bogatyrenko, V.V. AU - Snyder, D.R. T1 - Infrared dynamic scene simulating device based on light down-conversion. JO - IEE Proceedings -- Optoelectronics JF - IEE Proceedings -- Optoelectronics Y1 - 2003/08// VL - 150 IS - 4 M3 - Article SP - 391 EP - 394 PB - Institution of Engineering & Technology SN - 13502433 AB - Studies dynamic infrared scene projectors (DISP), devices used for the evaluation of electro-optical seekers and thermal imaging cameras. Down-conversion approach for DISP; Germanium screen in the 8-12-micrometer spectral range. KW - PROJECTORS KW - INFRARED photography KW - OPTOELECTRONICS N1 - Accession Number: 11293365; Malyutenko, V.K. 1 Michailovskaya, K.V. 1 Yu Malyutenko, O. 1 Bogatyrenko, V.V. 1 Snyder, D.R. 2; Affiliation: 1: Institute of Seminconductor Physics, Ukraine 2: Air Force Research Laboratory, USA; Source Info: Aug2003, Vol. 150 Issue 4, p391; Subject Term: PROJECTORS; Subject Term: INFRARED photography; Subject Term: OPTOELECTRONICS; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11293365&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jones, Keith S. AU - Middendorf, Matthew AU - McMillan, Grant R. AU - Calhoun, Gloria AU - Warm, Joel T1 - Comparing mouse and steady-state visual evoked response-based control JO - Interacting with Computers JF - Interacting with Computers Y1 - 2003/08// VL - 15 IS - 4 M3 - Article SP - 603 SN - 09535438 AB - Future computers will be more mobile, which will require new interaction methods. Accordingly, one might harness electroencephalographic (EEG) activity for computer control. Such devices exist, but all have limitations. Therefore, a novel EEG-based control was tested, which monitors the Steady-State Visual Evoked Response (SSVER). Selections are attempted by fixating a flickering target. A selection occurs if a SSVER is detected. To assess the device''s relative performance, a mouse and the SSVER-based control were used to acquire targets of various sizes and distances. Accuracy and speed were measured. Overall, accuracy was poorer and acquisition times were longer with the SSVER-based control. However, the performance levels attained by the SSVER-based control might be adequate when manual controls are problematic, such as in assistive technology applications. In addition, in contrast to the mouse, SSVER-based acquisition times were insensitive to variations in target distance, which might serve as an operational advantage in certain applications. [Copyright &y& Elsevier] AB - Copyright of Interacting with Computers is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOBILE communication systems KW - ELECTROENCEPHALOGRAPHY KW - MICE (Computers) KW - Alternative control KW - EEG-based control KW - Input devices KW - SSVER-based control N1 - Accession Number: 10505491; Jones, Keith S. 1; Email Address: jonesks@ksu.edu Middendorf, Matthew 2 McMillan, Grant R. 3; Email Address: grant.mcmillan@wpafb.af.mil Calhoun, Gloria 3; Email Address: gloria.calhoun@wpafb.af.mil Warm, Joel 1; Email Address: joel.warm@uc.edu; Affiliation: 1: Department of Psychology, University of Cincinnati, P.O. Box 210376, Cincinnati, OH 45221-0376, USA 2: Middendorf Scientific Services, 227 East Main Street, Medway, OH 45341, USA 3: Air Force Research Laboratory, 2255 H Street, Building 33, Wright-Patterson Air Force Base, OH 45433-7022, USA; Source Info: Aug2003, Vol. 15 Issue 4, p603; Subject Term: MOBILE communication systems; Subject Term: ELECTROENCEPHALOGRAPHY; Subject Term: MICE (Computers); Author-Supplied Keyword: Alternative control; Author-Supplied Keyword: EEG-based control; Author-Supplied Keyword: Input devices; Author-Supplied Keyword: SSVER-based control; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 517210 Wireless Telecommunications Carriers (except Satellite); Number of Pages: 19p; Document Type: Article L3 - 10.1016/S0953-5438(03)00052-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10505491&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Birman, Victor AU - Byrd, Larry W. T1 - Damping in ceramic matrix composites with matrix cracks JO - International Journal of Solids & Structures JF - International Journal of Solids & Structures Y1 - 2003/08// VL - 40 IS - 16 M3 - Article SP - 4239 SN - 00207683 AB - The paper presents an analytical solution capable of predicting the effect of matrix cracking in ceramic matrix composites (CMC) on damping. The cracking scenarios considered in the paper include through-the-thickness cracks and cracks terminating at the layer interfaces. The increase in damping associated with matrix cracking is mostly due to the frictional energy dissipation along the damaged fiber–matrix interfaces adjacent to the bridging cracks whose plane of propagation intersects the fiber axis. Damping increases with a higher density of matrix cracks. The loss factor is affected by the angle of the lamina relative to the direction of the applied load. The loss factor is also influenced by the frequency and magnitude of local dynamic stresses. Examples of distributions of the local loss factor along the axis of a CMC beam subject to pulsating loads of various frequencies are shown in the paper. [Copyright &y& Elsevier] AB - Copyright of International Journal of Solids & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DAMPING (Mechanics) KW - FIBER-reinforced ceramics KW - Ceramic matrix composites KW - Cracks KW - Damping N1 - Accession Number: 10058899; Birman, Victor 1; Email Address: vbirman@umr.edu Byrd, Larry W. 2; Affiliation: 1: Engineering Education Center, University of Missouri-Rolla, 8001 Natural Bridge Road, St. Louis, MO 63121, USA 2: Air Force Research Laboratory, AFRL/VASM, Building 65, 2790 D Street, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Aug2003, Vol. 40 Issue 16, p4239; Subject Term: DAMPING (Mechanics); Subject Term: FIBER-reinforced ceramics; Author-Supplied Keyword: Ceramic matrix composites; Author-Supplied Keyword: Cracks; Author-Supplied Keyword: Damping; Number of Pages: 18p; Document Type: Article L3 - 10.1016/S0020-7683(03)00199-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10058899&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Twenge, Jean M. AU - Campbell, W. Keith AU - Foster, Craig A. T1 - Parenthood and Marital Satisfaction: A Meta-Analytic Review. JO - Journal of Marriage & Family JF - Journal of Marriage & Family Y1 - 2003/08// VL - 65 IS - 3 M3 - Article SP - 574 EP - 583 SN - 00222445 AB - This meta-analysis finds that parents report lower marital satisfaction compared with nonparents (d = -.19, r = -.10). There is also a significant negative correlation between marital satisfaction and number of children (d = -.13, r = -.06). The difference in marital satisfaction is most pronounced among mothers of infants (38% of mothers of infants have high marital satisfaction, compared with 62% of childless women). For men, the effect remains similar across ages of children. The effect of parenthood on marital satisfaction is more negative among high socioeconomic groups, younger birth cohorts, and in more recent years. The data suggest that marital satisfaction decreases after the birth of a child due to role conflicts and restriction of freedom. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Marriage & Family is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PARENTHOOD KW - MARITAL satisfaction KW - SATISFACTION KW - PARENT & child KW - MOTHERS KW - ROLE conflict KW - birth cohort KW - children KW - gender KW - marital satisfaction KW - marriage KW - marriage. N1 - Accession Number: 10606768; Twenge, Jean M. 1; Email Address: jtwenge@mail.sdsu.edu Campbell, W. Keith 2 Foster, Craig A. 3; Affiliation: 1: San Diego State University 2: University of Georgia 3: United States Air Force Academy; Source Info: Aug2003, Vol. 65 Issue 3, p574; Subject Term: PARENTHOOD; Subject Term: MARITAL satisfaction; Subject Term: SATISFACTION; Subject Term: PARENT & child; Subject Term: MOTHERS; Subject Term: ROLE conflict; Author-Supplied Keyword: birth cohort; Author-Supplied Keyword: children; Author-Supplied Keyword: gender; Author-Supplied Keyword: marital satisfaction; Author-Supplied Keyword: marriage; Author-Supplied Keyword: marriage.; Number of Pages: 10p; Illustrations: 1 Chart; Document Type: Article; Full Text Word Count: 6434 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10606768&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zawada, Larry P. AU - Staehler, James AU - Steel, Steve T1 - Consequence of Intermittent Exposure to Moisture and Salt Fog on the High-Temperature Fatigue Durability of Several Ceramic-Matrix Composites. JO - Journal of the American Ceramic Society JF - Journal of the American Ceramic Society Y1 - 2003/08// VL - 86 IS - 8 M3 - Article SP - 1282 PB - Wiley-Blackwell SN - 00027820 AB - Assesses the overall extent that moisture affects the high-temperature fatigue durability of ceramic-matrix composites. Results of the multiple tension tests; Results of the fatigue plus salt fog experiment; Impact of processing changes on the moisture sensitivity for Nicalon/SiNC. KW - MATERIALS -- Fatigue KW - COMPOSITE materials KW - CERAMICS KW - HIGH temperature chemistry N1 - Accession Number: 10543981; Zawada, Larry P. 1 Staehler, James 1,2 Steel, Steve 1; Affiliation: 1: Materials and Manufacturing Directorate, Air Force Research Laboratory, AFRL/MLLN, Wright-Patterson AFB, Ohio 2: American Ceramic Society; Source Info: Aug2003, Vol. 86 Issue 8, p1282; Subject Term: MATERIALS -- Fatigue; Subject Term: COMPOSITE materials; Subject Term: CERAMICS; Subject Term: HIGH temperature chemistry; NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10543981&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bertin, John J. AU - Cummings, Russell M. T1 - Fifty years of hypersonics: where we've been, where we're going JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences Y1 - 2003/08// VL - 39 IS - 6/7 M3 - Article SP - 511 SN - 03760421 AB - Hypersonic flight has been with us since 22 September 1963, when Robert M. White flew the North American X-15 at 4520 mph at an altitude of 354,200 ft—a Mach number of 6.7! This remarkable achievement was accomplished over six decades due to intensive research and development by a large number of scientists and engineers. In spite of that momentous achievement, designers have found the hypersonic environment to be harsh and non-forgiving. New programs since the 1960s have often uncovered the unknown unknowns, usually the hard way—early flights of new systems have often revealed problems of which the designers were unaware. Such problems include: the ineffectiveness of the body flap for the Space Shuttle Orbiter, the viscous/inviscid interactions produced by the umbilical fairings that damaged the conical section tile protection system of the Gemini Capsule, and the shock/shock interaction that damaged the X-15A-2 when it carried the hypersonic ramjet experiment. In order to continue to make advances in hypersonic flight a sustained and visionary effort is essential to generate required knowledge and technology. In order to better prepare for future developments in hypersonic flight, this article reviews the advances made within the past 50 years and then looks into the future, not just for new technological developments, but for new ways of thinking about the unknown challenges that lie ahead. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HYPERSONIC planes KW - AERODYNAMICS KW - NORTH America N1 - Accession Number: 11041318; Bertin, John J. 1 Cummings, Russell M.; Email Address: russ.cummings@usafa.af.mil; Affiliation: 1: Department of Aeronautics, United States Air Force Academy, USAF Academy, CO 80840, USA; Source Info: Aug2003, Vol. 39 Issue 6/7, p511; Subject Term: HYPERSONIC planes; Subject Term: AERODYNAMICS; Subject Term: NORTH America; Number of Pages: 26p; Document Type: Article L3 - 10.1016/S0376-0421(03)00079-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11041318&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Conner, B.P. AU - Hutson, A.L. AU - Chambon, L. T1 - Observations of fretting fatigue micro-damage of Ti–6Al–4V JO - Wear JF - Wear Y1 - 2003/08//Aug-Sep2003 VL - 255 IS - 1-6 M3 - Article SP - 259 SN - 00431648 AB - Small displacement contact fatigue below the threshold of sliding produces micro-slip near the edges of contact. The damage that results is known as fretting fatigue, and includes large surface stresses, wear in the regions of slip and crack nucleation, all of which contribute to drastic reductions in fatigue capability. Damage of this type that was generated using three independent test systems on four different contact geometries is compared. Characterization of the damage was conducted using scanning electron microscopy (SEM), semi-quantitative elemental analysis and metallographic cross-sectioning to identify damage micro-mechanisms. The evidence presented indicates the near simultaneous nucleation of multiple cracks, some of which will propagate if subjected to a sufficient bulk stress. While most cracks nucleated in regions of slip, cracks were observed outside of the slip regions under certain conditions. In regions of wear, micro-notches that can lead to the formation of fretting fatigue cracks were observed and appeared to have been the result of local plasticity induced by shot peening. Wear particles were observed in the mouths of cracks as small as 3 μm in depth. The implications of these observations on the development of life prediction models for fretting fatigue are discussed. [Copyright &y& Elsevier] AB - Copyright of Wear is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM KW - PARTICLES KW - NUCLEATION KW - Damage mechanisms KW - Fretting fatigue KW - Titanium N1 - Accession Number: 10366822; Conner, B.P. 1 Hutson, A.L. 2; Email Address: alisha.hutson@wpafb.af.mil Chambon, L. 3; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFB, Wright-Patterson, OH 45433, USA 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0128, USA 3: Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA; Source Info: Aug-Sep2003, Vol. 255 Issue 1-6, p259; Subject Term: TITANIUM; Subject Term: PARTICLES; Subject Term: NUCLEATION; Author-Supplied Keyword: Damage mechanisms; Author-Supplied Keyword: Fretting fatigue; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 10p; Document Type: Article L3 - 10.1016/S0043-1648(03)00152-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10366822&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wisnowski, James W. AU - Simpson, James R. AU - Montgomery, Douglas C. AU - Runger, George C. T1 - Resampling methods for variable selection in robust regression JO - Computational Statistics & Data Analysis JF - Computational Statistics & Data Analysis Y1 - 2003/07/28/ VL - 43 IS - 3 M3 - Article SP - 341 SN - 01679473 AB - With the inundation of large data sets requiring analysis and empirical model building, outliers have become commonplace. Fortunately, several standard statistical software packages have allowed practitioners to use robust regression estimators to easily fit data sets that are contaminated with outliers. However, little guidance is available for selecting the best subset of the predictor variables when using these robust estimators. We initially consider cross-validation and bootstrap resampling methods that have performed well for least-squares variable selection. It turns out that these variable selection methods cannot be directly applied to contaminated data sets using a robust estimation scheme. The prediction errors, inflated by the outliers, are not reliable measures of how well the robust model fits the data.As a result, new resampling variable selection methods are proposed by introducing alternative estimates of prediction error in the contaminated model. We demonstrate that, although robust estimation and resampling variable selection are computationally complex procedures, we can combine both techniques for superior results using modest computational resources. Monte Carlo simulation is used to evaluate the proposed variable selection procedures against alternatives through a designed experiment approach. The experiment factors include percentage of outliers, outlier geometry, bootstrap sample size, number of bootstrap samples, and cross-validation assessment size. The results are summarized and recommendations for use are provided. [Copyright &y& Elsevier] AB - Copyright of Computational Statistics & Data Analysis is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESAMPLING (Statistics) KW - ROBUST control KW - Bootstrap KW - Cross-validation KW - Outliers KW - Robust regression KW - Variable selection N1 - Accession Number: 10060605; Wisnowski, James W. 1; Email Address: jim.wisnowski@usafa.af.mil Simpson, James R. 2; Email Address: simpson@wombat.eng.fsu.edu Montgomery, Douglas C. 3; Email Address: doug.montgomery@asu.edu Runger, George C. 3; Email Address: runger@asu.edu; Affiliation: 1: Department of Mathematical Sciences, United States Air Force Academy, USAF/DFMS, 2354 Fairchild Dr., Suite 6D2A CO 80840-6252, USA 2: Department of Industrial and Manufacturing Engineering, Florida State University, Florida A&M University, Tallahassee, FL 32310-6046, USA 3: Department of Industrial Engineering, Arizona State University, Tempe, AZ 85287-5906, USA; Source Info: Jul2003, Vol. 43 Issue 3, p341; Subject Term: RESAMPLING (Statistics); Subject Term: ROBUST control; Author-Supplied Keyword: Bootstrap; Author-Supplied Keyword: Cross-validation; Author-Supplied Keyword: Outliers; Author-Supplied Keyword: Robust regression; Author-Supplied Keyword: Variable selection; Number of Pages: 15p; Document Type: Article L3 - 10.1016/S0167-9473(02)00235-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10060605&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Prasad, Awadhesh AU - Lai, Ying-Cheng AU - Gavrielides, Athanasios AU - Kovanis, Vassilios T1 - Complicated basins in external-cavity semiconductor lasers JO - Physics Letters A JF - Physics Letters A Y1 - 2003/07/21/ VL - 314 IS - 1/2 M3 - Article SP - 44 SN - 03759601 AB - We demonstrate that complicated basins of attraction can occur in time-delay coupled, external-cavity semiconductor lasers. In particular, we find that there can be multiple coexisting attractors associated with low-frequency fluctuations in the laser power output, and prediction of the asymptotic attractor for specific initial conditions is practically impossible. [Copyright &y& Elsevier] AB - Copyright of Physics Letters A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEMICONDUCTOR lasers KW - LASERS KW - 42.55.Px KW - 42.65.Sf KW - Nonlinear dynamics KW - Optical chaos KW - Semiconductor lasers N1 - Accession Number: 10178966; Prasad, Awadhesh 1; Email Address: awadhesh@enpc589.eas.asu.edu Lai, Ying-Cheng 1,2 Gavrielides, Athanasios 3 Kovanis, Vassilios 3; Affiliation: 1: Department of Mathematics and SSERC, Arizona State University, Tempe, AZ 85287, USA 2: Departments of Electrical Engineering and Physics, Arizona State University, Tempe, AZ 85287, USA 3: Nonlinear Optics Center, Air Force Research Laboratory, DELO, Kirtland AFB, New Mexico, NM 87117, USA; Source Info: Jul2003, Vol. 314 Issue 1/2, p44; Subject Term: SEMICONDUCTOR lasers; Subject Term: LASERS; Author-Supplied Keyword: 42.55.Px; Author-Supplied Keyword: 42.65.Sf; Author-Supplied Keyword: Nonlinear dynamics; Author-Supplied Keyword: Optical chaos; Author-Supplied Keyword: Semiconductor lasers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 7p; Document Type: Article L3 - 10.1016/S0375-9601(03)00880-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10178966&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miracle, D.B. AU - Sanders, W.S. AU - Senkov, O.N. T1 - The influence of efficient atomic packing on the constitution of metallic glasses. JO - Philosophical Magazine JF - Philosophical Magazine Y1 - 2003/07/11/ VL - 83 IS - 20 M3 - Article SP - 2409 SN - 14786435 AB - Efficient atomic packing is shown to be a fundamental consideration in the formation of metallic glasses. A simple concept of packing efficiency, based on atom packing in the first coordination shell of solute-centred clusters, is proposed and developed. This model leads to the prediction that specific radius ratios, defined as the radius of the solute atom divided by the radius of the solvent atom, are preferred in the constitution of metallic glasses. Analysis of a large number of binary and complex metallic glasses shows that these specific critical radius ratios R * are indeed preferred in known metallic glasses. The predictions of this model extend previous proposals to describe the influence of topology on the formation of metallic glasses. Although this model represents a simple idealization, the strong agreement with published metallic glasses suggests that efficient atomic packing, enabled by solute-centred clusters, forms a fundamental consideration in the constitution of metallic glasses. [ABSTRACT FROM AUTHOR] AB - Copyright of Philosophical Magazine is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALLIC glasses KW - MICROCLUSTERS N1 - Accession Number: 10466851; Miracle, D.B. 1; Email Address: daniel.miracle@wpafb.af.mil Sanders, W.S. 1 Senkov, O.N. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio, USA 2: UES, Inc., Dayton, Ohio, USA; Source Info: 7/11/2003, Vol. 83 Issue 20, p2409; Subject Term: METALLIC glasses; Subject Term: MICROCLUSTERS; Number of Pages: 20p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10466851&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schaefer, Dale W. AU - Zhao, Jian AU - Brown, Janis M. AU - Anderson, David P. AU - Tomlin, David W. T1 - Morphology of dispersed carbon single-walled nanotubes JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2003/07/03/ VL - 375 IS - 3/4 M3 - Article SP - 369 SN - 00092614 AB - Using scattering methods, we determine the morphology of carbon nanotube suspensions over length scales from 1 nm to 50 μm. We find no evidence of rod-like character at any length. Rather, a network structure of aggregated tubes, similar to that seen in dry samples, is found. These observations have significant implications regarding the use of single-walled nanotubes as a composite reinforcing filler since the network structure has significantly lower modulus than fully dispersed tubes. We also show that it is possible to isolate a rod-like fraction from the aggregated suspension using intense sonication, providing a potential route to fully dispersed nanotubes. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MORPHOLOGY KW - NANOTUBES N1 - Accession Number: 10061417; Schaefer, Dale W. 1; Email Address: dale.schaefer@uc.edu Zhao, Jian 1 Brown, Janis M. 2 Anderson, David P. 3 Tomlin, David W. 4; Affiliation: 1: University of Cincinnati, Department of Chemical and Materials Engineering, 2625 Clifton Ave, Cincinnati, OH 45221-0012, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7750, USA 3: University of Dayton Research Institute, 300 College Park Ave., Dayton, OH 45469-0168, USA 4: Technical Management Concepts, Inc., Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7702, USA; Source Info: Jul2003, Vol. 375 Issue 3/4, p369; Subject Term: MORPHOLOGY; Subject Term: NANOTUBES; Number of Pages: 7p; Document Type: Article L3 - 10.1016/S0009-2614(03)00867-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10061417&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lovell, T. Alan AU - Cochran Jr., John E. AU - Cicci, David A. AU - Cho, Sungki T1 - A study of the re-entry orbit discrepancy involving tethered satellites JO - Acta Astronautica JF - Acta Astronautica Y1 - 2003/07// VL - 53 IS - 1 M3 - Article SP - 21 SN - 00945765 AB - This paper describes an investigation of the motion of objects in near-Earth orbit that have a high probability of being identified as re-entering the Earth''s atmosphere. In the case of two or more satellites tethered together, each object''s motion deviates from the traditional Keplerian-like motion of a single untethered body, due to the tension force in the tether. Consequently, classical identification and motion prediction techniques applied to a tethered object may produce results that indicate that the object is on course to re-enter when it actually is not, or vice-versa. In this study the factors that cause tethered bodies to behave differently than expected, and how significant these factors must be to cause a discrepancy regarding re-entry, are determined. A candidate re-entry identification methodology based on this foundation is then formulated. [Copyright &y& Elsevier] AB - Copyright of Acta Astronautica is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TETHERED satellites KW - EARTH (Planet) KW - ASTRONOMY N1 - Accession Number: 9401835; Lovell, T. Alan 1 Cochran Jr., John E. 2 Cicci, David A. 2 Cho, Sungki 3; Affiliation: 1: U.S. Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Ave, SE, Kirtland AFB, NM 87117, USA 2: Department of Aerospace Engineering, 211 Aerospace Engineering Bldg, Auburn University, AL 36849-5338, USA 3: Electronics and Telecommunications Research Institute, Yusong, Taejon, 305-600, South Korea; Source Info: Jul2003, Vol. 53 Issue 1, p21; Subject Term: TETHERED satellites; Subject Term: EARTH (Planet); Subject Term: ASTRONOMY; Number of Pages: 13p; Document Type: Article L3 - 10.1016/S0094-5765(02)00137-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9401835&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sparks, Andrew T1 - Advances in aircraft flight control: Mark B. Tischler, Taylor & Francies, London, 1996, ISBN 0-7484-0479-1 JO - Automatica JF - Automatica Y1 - 2003/07// VL - 39 IS - 7 M3 - Book Review SP - 1316 SN - 00051098 N1 - Accession Number: 9854377; Sparks, Andrew 1; Email Address: andrew.sparks@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Air Vehicles Directorate, AFRL/VACA, 2210 Eighth Street Wright Patterson Air Force Base, OH 45433-7521, USA; Source Info: Jul2003, Vol. 39 Issue 7, p1316; Number of Pages: 4p; Document Type: Book Review L3 - 10.1016/S0005-1098(03)00102-X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9854377&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - O'Loughlin, Edward J. AU - Kemner, Kenneth M. AU - Burris, David R. T1 - Effects of Ag[sup I], Au[sup III], and Cu[sup II] on the Reductive Dechlorination of Carbon Tetrachloride by Green Rust. JO - Environmental Science & Technology JF - Environmental Science & Technology Y1 - 2003/07//7/1/2003 VL - 37 IS - 13 M3 - Article SP - 2905 EP - 2912 SN - 0013936X AB - Green rusts (GRs), mixed iron(II)/iron(III) hydroxide minerals found in many suboxic environments, have been shown to reduce a range of organic and inorganic contaminants, including several chlorinated hydrocarbons. Many studies have demonstrated the catalytic activity of transition metal species in the reduction of chlorinated hydrocarbons, suggesting the potential for enhanced reduction by GR in the presence of an appropriate transition metal catalyst. Reductive dechlorination of carbon tetrachloride (CT) was examined in aqueous suspensions of GR amended with Ag[sup I], Au[sup III], or Cu[sup II]. The CT reduction rates were greatly increased for systems amended with Cu[sup II], Au[sup III], and Ag[sup I] (listed in order of increasing rates) relative to GR alone. Observed intermediates and products included chloroform, dichloromethane, chloromethane, methane, acetylene, ethene, ethane, carbon monoxide, tetrachloroethene, and various nonchlorinated C[sub 3] and C[sub 4] compounds. Product distributions for the reductive dechlorination of CT were highly dependent on the transition metal used. A reaction pathway scheme is proposed in which CT is reduced primarily to methane and other nonchlorinated end products, largely through a series of one-electron reductions forming radicals and carbenes/carbenoids. Recently, X-ray absorption fine structure analysis of aqueous GR suspensions amended with Ag[sup I], Au[sup III], or Cu[sup II] showed that the metals were reduced to their zerovalent forms. A possible mechanism for CT reduction is the formation of a galvanic couple involving the zerovalent metal and GR, with reduction of CT occurring on the surface of the metal and GR serving as the bulk electron source. The enhanced reduction of CT by GR suspensions amended with Ag[sup I], Au[sup III], or Cu[sup II] may prove useful in the development of improved materials for remediation of chlorinated organic contaminants. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IRON KW - CARBON tetrachloride KW - CHLORINATION N1 - Accession Number: 10770363; O'Loughlin, Edward J. 1,2; Email Address: oloughlin@anl.gov Kemner, Kenneth M. 2 Burris, David R. 1,3; Affiliation: 1: Air Force Research Laboratory, Florida 2: Environmental Research Division, Argonne National Laboratory 3: Integrated Science and Technology, Inc., Florida; Source Info: 7/1/2003, Vol. 37 Issue 13, p2905; Subject Term: IRON; Subject Term: CARBON tetrachloride; Subject Term: CHLORINATION; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; NAICS/Industry Codes: 416210 Metal service centres; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 8p; Illustrations: 1 Diagram, 2 Charts, 8 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10770363&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lacy, Seth L. AU - Bernstein, Dennis S. T1 - Subspace Identification With Guaranteed Stability Using Constrained Optimization. JO - IEEE Transactions on Automatic Control JF - IEEE Transactions on Automatic Control Y1 - 2003/07// VL - 48 IS - 7 M3 - Article SP - 1259 EP - 1263 SN - 00189286 AB - In system identification, the true system is often known to be stable. However, due to finite sample constraints, modeling errors, plant disturbances and measurement noise, the identified model may be unstable. We present a constrained optimization method to ensure asymptotic stability of the identified model in the context of subspace identification methods. In subspace identification, we first obtain an estimate of the state sequence or extended observability matrix and then solve a least squares optimization problem to estimate the system parameters. To ensure asymptotic stability of the identified model, we write the least-squares optimization problem as a convex linear programming problem with mixed equality, quadratic, and positive-semidefinite constraints suitable for existing convex optimization codes such as SeDuMi. We present examples to illustrate the method and compare to existing approaches. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Automatic Control is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SYSTEM identification KW - LINEAR systems N1 - Accession Number: 10920140; Lacy, Seth L. 1; Email Address: seth.lacy@kirtland.af.mil Bernstein, Dennis S. 2; Email Address: dsbaero@umich.edu; Affiliation: 1: Air Force Research Laboratory, USA 2: Aerospace Engineering Department, University of Michigan, USA; Source Info: Jul2003, Vol. 48 Issue 7, p1259; Subject Term: SYSTEM identification; Subject Term: LINEAR systems; Number of Pages: 5p; Illustrations: 2 Charts, 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10920140&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miller, Thomas M. AU - Arnold, Susan T. AU - Viggiano, A.A. T1 - G3 and G2 thermochemistry of sulfur fluoride neutrals and anions JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2003/07// VL - 227 IS - 3 M3 - Article SP - 413 SN - 13873806 AB - Gaussian-3 (G3) and Gaussian-2 (G2) calculations were performed to obtain total energies, enthalpies, and Gibbs free energies for neutral and anionic SFn, for n=1–6. Electron affinities and bond enthalpies were derived from these results. The electron affinities agree well with experimental results. Calculated first dissociation bond strengths agree with experimental results except for SF5, where a discrepancy was known to exist. G3(MP2) and G2(MP2) total energies are also presented for the SFn and SFn−. Results from more economical density functional theory are compared to the G3 ones and found to agree within 0.4 eV, except for EA(SF6). [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENTHALPY KW - THERMOCHEMISTRY KW - Bond strength KW - Electron affinity KW - Fluoride affinity KW - G2 KW - G2(MP2) KW - G3 KW - G3(MP2) KW - SF KW - SF2 KW - SF2− KW - SF3 KW - SF3− KW - SF4 KW - SF4− KW - SF5 KW - SF5− KW - SF6 KW - SF6− KW - SF− N1 - Accession Number: 10011019; Miller, Thomas M.; Email Address: thomas.miller@hanscom.af.mil Arnold, Susan T. 1 Viggiano, A.A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom AFB, MA 01731-3010, USA; Source Info: Jul2003, Vol. 227 Issue 3, p413; Subject Term: ENTHALPY; Subject Term: THERMOCHEMISTRY; Author-Supplied Keyword: Bond strength; Author-Supplied Keyword: Electron affinity; Author-Supplied Keyword: Fluoride affinity; Author-Supplied Keyword: G2; Author-Supplied Keyword: G2(MP2); Author-Supplied Keyword: G3; Author-Supplied Keyword: G3(MP2); Author-Supplied Keyword: SF; Author-Supplied Keyword: SF2; Author-Supplied Keyword: SF2−; Author-Supplied Keyword: SF3; Author-Supplied Keyword: SF3−; Author-Supplied Keyword: SF4; Author-Supplied Keyword: SF4−; Author-Supplied Keyword: SF5; Author-Supplied Keyword: SF5−; Author-Supplied Keyword: SF6; Author-Supplied Keyword: SF6−; Author-Supplied Keyword: SF−; Number of Pages: 8p; Document Type: Article L3 - 10.1016/S1387-3806(03)00079-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10011019&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sojka, Jan J. AU - Thompson, Donald C. AU - Schunk, Robert W. AU - Eccles, J. Vincent AU - Makela, Jonathan J. AU - Kelley, Michael C. AU - González, Sixto A. AU - Aponte, Nestor AU - Bullett, Terence W. T1 - Ionospheric data assimilation: recovery of strong mid-latitudinal density gradients JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2003/07// VL - 65 IS - 10 M3 - Article SP - 1087 SN - 13646826 AB - The September 1999 Caribbean Ionospheric Campaign (CIC99), spanning the period 15–17 September 1999, was a period of repeated moderate geomagnetic storms. Both incoherent scatter radar (ISR) and digisonde F-layer measurements were made in the vicinity of Arecibo, Puerto Rico by the Arecibo ISR and Ramey Digisonde, which is one of the Digital Ionospheric Sounding System instruments. These data sets showed significant day-to-day F-layer variability, especially in the evening sectors. Local ionospheric data assimilation with the Assimilation Ionospheric Model (AIM1.06L) was able to reproduce this ionospheric day-to-day weather. However, during this time the Arecibo ISR was able to determine that strong latitude density gradients existed in the evening sector. These latitude gradients ranged from 5% to over 10% per degree of latitude, increasing equatorward. The climatological ionospheric forecast model (IFM) predicts gradients of the correct sign but significantly less than 5% per degree. Using the observed fact that the strong local vertical plasma drift was produced by an eastward electric field, an enhanced equatorial electric field model was created. This model was used to drive the IFM-E model. The effect of the enhanced electric field is to drive plasma flux tubes to higher latitudes and effectively move the poleward shoulder of the equatorial anomalies to higher latitudes. In this simulation, the simulated Arecibo density gradients range from 10% to 20% per degree. In addition, the local densities at Arecibo are now higher than the observed ones in the evening sector. The irony of this study is that the local AIM1.06L assimilation provides the correct local densities in the F region but is based upon the assumption of corotating field lines. When the plasma flux tubes are free to be E×B/B2 convected, as in the IFM equator model simulations, the local densities are too high. However, gradients in latitude are more realistic although somewhat larger than observed. This latter simulation is based on “better” physics than the AIM1.06L, but because the latitude (apex altitude) distribution of the eastward electric field driver is uncertain, it produces poor assimilation results. This study points to the need for more extended latitude coverage in the CIC campaigns in order to address the issue of a minimum data requirement for the assimilation. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSPHERE KW - GEOMAGNETISM KW - F region KW - Assimilative modeling KW - Electric field perturbations KW - Mid-latitude density gradients KW - Mid-latitude ionosphere N1 - Accession Number: 11043497; Sojka, Jan J. 1; Email Address: sec@spacenv.com Thompson, Donald C. 1 Schunk, Robert W. 1 Eccles, J. Vincent 1 Makela, Jonathan J. 2 Kelley, Michael C. 2 González, Sixto A. 3 Aponte, Nestor 3 Bullett, Terence W. 4; Affiliation: 1: Space Environment Corporation, 221 N. Spring Creek Parkway, Suite A, Providence, UT 84332, USA 2: School of Electrical and Computer Engineering, Rhodes Hall, Cornell University, Ithaca, NY 14853, USA 3: National Astronomy and Ionosphere Center, Arecibo Observatory, HC 3 Box 53995, Arecibo, PR 00612, USA 4: Battlespace Environment Division, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA; Source Info: Jul2003, Vol. 65 Issue 10, p1087; Subject Term: IONOSPHERE; Subject Term: GEOMAGNETISM; Subject Term: F region; Author-Supplied Keyword: Assimilative modeling; Author-Supplied Keyword: Electric field perturbations; Author-Supplied Keyword: Mid-latitude density gradients; Author-Supplied Keyword: Mid-latitude ionosphere; Number of Pages: 11p; Document Type: Article L3 - 10.1016/j.jastp.2003.07.004 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11043497&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McKenney Jr., Robert L. AU - Krawietz, Thomas R. T1 - Binary Phase Diagram Series:HMX =RDX. JO - Journal of Energetic Materials JF - Journal of Energetic Materials Y1 - 2003/07//Jul-Sep2003 VL - 21 IS - 3 M3 - Article SP - 141 EP - 166 PB - Taylor & Francis Ltd SN - 07370652 AB - Two binary phase diagrams for the hexahydro-1,3,5-trinitro1,3,5-triazine (RDX)/octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) system have been determined experimentally. Liquidus curves have been predicted computationally for RDX and δ-HMX. Mixtures exhibit the thermal characteristics associated with simple binary eutectic systems affected by observable HMX polymorphism. The presence of both the β- and δ-polymorphs of HMX were confirmed by X-ray diffraction analysis. The RDX melting temperatures are consistent with calculated liquidus temperatures. Other experimental endothermic processes observed during this investigation are believed to be associated with the melting of binary eutectic compositions involving the β-HMX (133.5 ± 0.3° C/74.9-75.5 mol% RDX) and δ-HMX (191.6 ± 0.4° C/79.0-79.3 mol% RDX) polymorphs and the solid-state transition from the β- to the δ-HMX polymorph. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Energetic Materials is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHASE diagrams KW - TRIAZINES KW - MIXTURES KW - EUTECTICS KW - X-ray diffraction KW - FUSION (Phase transformation) KW - HMX KW - phase diagram KW - RDX N1 - Accession Number: 13705573; McKenney Jr., Robert L. 1; Email Address: robert.mckenney@eglin.af.mil Krawietz, Thomas R. 1; Affiliation: 1: Air Force Research Laboratory, Munitions Directorate, Energetic Materials Branch, USA; Source Info: Jul-Sep2003, Vol. 21 Issue 3, p141; Subject Term: PHASE diagrams; Subject Term: TRIAZINES; Subject Term: MIXTURES; Subject Term: EUTECTICS; Subject Term: X-ray diffraction; Subject Term: FUSION (Phase transformation); Author-Supplied Keyword: HMX; Author-Supplied Keyword: phase diagram; Author-Supplied Keyword: RDX; Number of Pages: 26p; Document Type: Article L3 - 10.1080/07370650390256656 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13705573&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - HOSUR, M. V. AU - ADYA, M. AU - ALEXANDER, J. AU - JEELANI, S. AU - VAIDYA, U. AU - MAYER, A. T1 - Studies on Impact Damage Resistance of Affordable Stitched Woven Carbon/Epoxy Composite Laminates. JO - Journal of Reinforced Plastics & Composites JF - Journal of Reinforced Plastics & Composites Y1 - 2003/07// VL - 22 IS - 10 M3 - Article SP - 927 EP - 952 AB - This paper discusses the response of seven layer plain and satin weave carbon fabric reinforced composites fabricated using low-cost Vacuum Assisted Resin Infusion Molding (VARIM) process under low-velocity impact loading. Both stitched and unstitched laminates were tested at energy levels ranging 5-50 J using an instrumented drop-weight machine. A 3-cord Kevlar thread was used to stitch the laminate in two orthogonal grid patterns each at a 6mm pitch: one with 25.4mm and the other with 12.7mm grid. Damage due to impact loading was evaluated through ultrasonic nondestructive evaluation (NDE). Results of the study showed the effectiveness of stitching in containing the damage size with 12.7 mm grid stitch samples exhibiting the least damage. Further, satin weave fabric composites exhibit better impact resistance as compared to plain weave fabric composites. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Reinforced Plastics & Composites is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IMPACT loads (Engineering) KW - LAMINATED materials KW - COMPOSITE materials KW - TEXTILES KW - WEAVING KW - ULTRASONIC testing KW - affordable manufacturing KW - damage resistance KW - low-velocity impact KW - stitching KW - ultrasonics KW - woven fabric composites N1 - Accession Number: 34244718; HOSUR, M. V. 1; Email Address: hosur@tusk.edu ADYA, M. 1 ALEXANDER, J. 1 JEELANI, S. 1 VAIDYA, U. 2 MAYER, A. 3; Affiliation: 1: Center for Advanced Materials, Tuskegee University, Tuskegee, AL 36088, USA 2: Department of Materials and Mechanical Engineering, The University of Alabama at Birmingham, Birmingham, AL 35294-4461, USA 3: Structural Design and Development Branch (VASD), Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433-7531, USA; Source Info: 2003, Vol. 22 Issue 10, p927; Subject Term: IMPACT loads (Engineering); Subject Term: LAMINATED materials; Subject Term: COMPOSITE materials; Subject Term: TEXTILES; Subject Term: WEAVING; Subject Term: ULTRASONIC testing; Author-Supplied Keyword: affordable manufacturing; Author-Supplied Keyword: damage resistance; Author-Supplied Keyword: low-velocity impact; Author-Supplied Keyword: stitching; Author-Supplied Keyword: ultrasonics; Author-Supplied Keyword: woven fabric composites; NAICS/Industry Codes: 414130 Piece goods, notions and other dry goods merchant wholesalers; NAICS/Industry Codes: 424310 Piece Goods, Notions, and Other Dry Goods Merchant Wholesalers; NAICS/Industry Codes: 313210 Broadwoven Fabric Mills; NAICS/Industry Codes: 314999 All Other Miscellaneous Textile Product Mills; NAICS/Industry Codes: 313220 Narrow Fabric Mills and Schiffli Machine Embroidery; Number of Pages: 25p; Illustrations: 1 Black and White Photograph, 8 Diagrams, 6 Charts, 8 Graphs; Document Type: Article L3 - 10.1177/073168403027283 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=34244718&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Anttonen, J.S.R. AU - King, P.I. AU - Beran, P.S. T1 - POD-Based reduced-order models with deforming grids JO - Mathematical & Computer Modelling JF - Mathematical & Computer Modelling Y1 - 2003/07// VL - 38 IS - 1/2 M3 - Article SP - 41 SN - 08957177 AB - Proper orthogonal decomposition based reduced order modeling (POD/ROM) is examined with deforming grids. POD/ROM is a technique that operates in an index-space for computations, not typically accounting for grid dynamics. Two model problems are presented to demonstrate the method of accounting for the effects of grid deformation on POD/ROM. The analytical solution of flow about an oscillating cylinder and potential flow over an oscillating panel. The accuracy and robustness of POD/ROM on deforming grids are compared to that of rigid grid POD/ROM. Deforming grid POD/ROMs are found to require more modes than rigid grid POD/ROMs for similar accuracy levels. In addition, for deforming grids, POD/ROMs are less accurate when the grid deformation is significantly altered from the deformations seen in the POD/ROM development. To address these issues, a new technique is developed that compares the relative grid motion between the POD/ROM creation and execution. The technique determines the current relative grid deformation and selects the best POD/ROM from those available. [Copyright &y& Elsevier] AB - Copyright of Mathematical & Computer Modelling is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORTHOGONAL decompositions KW - MATHEMATICAL models KW - OSCILLATIONS KW - MATHEMATICS KW - Deforming grid KW - Proper orthogonal decomposition KW - Reduced order modeling N1 - Accession Number: 11730015; Anttonen, J.S.R. 1; Email Address: John.Anttonen@eglin.af.mil King, P.I. 2; Email Address: Paul.King@AFIT.edu Beran, P.S. 3; Email Address: Philip.Beran@AFIT.edu; Affiliation: 1: Air Force Institute of Technology Wright-Patterson AFB, OH 45433-7765, U.S.A. 2: Department of Aeronautical and Astronautical Engineering Air Force Institute of Technology Wright-Patterson AFB, OH 45433-7765, U.S.A. 3: Air Vehicles Directorate Air Force Research Laboratory Wright-Patterson AFB, OH 45433-7765, U.S.A.; Source Info: Jul2003, Vol. 38 Issue 1/2, p41; Subject Term: ORTHOGONAL decompositions; Subject Term: MATHEMATICAL models; Subject Term: OSCILLATIONS; Subject Term: MATHEMATICS; Author-Supplied Keyword: Deforming grid; Author-Supplied Keyword: Proper orthogonal decomposition; Author-Supplied Keyword: Reduced order modeling; Number of Pages: 22p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11730015&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baek, Jong-Beom AU - Tan, Loon-Seng T1 - Improved syntheses of poly(oxy-1,3-phenylenecarbonyl-1,4-phenylene) and related poly(ether–ketones) using polyphosphoric acid/P2O5 as polymerization medium JO - Polymer JF - Polymer Y1 - 2003/07// VL - 44 IS - 15 M3 - Article SP - 4135 SN - 00323861 AB - Based on the model-compound studies, the composition of polyphosphoric acid (PPA)/P2O5 mixture as an effective catalytic/dehydrative medium for the preparation of poly(ether–ketones) was optimized. Thus, with the optimal weight ratio of 4:1 (PPA:P2O5), the electrophilic substitution polycondensation of 3-phenoxybenzoic acid and related AB monomers was substantially promoted at 130 °C to yield the subject polymer abbreviated as mPEK and related poly(ether–ketones) with significantly higher molecular weights. In the cases where the polymerization systems were completely homogeneous, the ensuing polycondensation was rapid and yielded high molecular weight polymers (e.g. mPEK [η]=2.10 dl/g) at 130 °C within 30 min., as compared to PPMA (phosphorus pentoxide/methanesulfonic acid) method which gave only moderate molecular weight polymers, e.g. mPEK ([η]=0.64 dl/g). In some cases, where the monomers and PPA/P2O5 were not fully compatible, polycondensation did proceed and reasonable molecular weight range ([η]=0.69–0.76 dl/g) could be achieved. However, the complete incompatibility between the poly(ether–sulfone) and PPA/P2O5 medium precluded the successful polymerization of 4-phenoxybenzenesulfonic acid. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYCONDENSATION KW - POLYMERIZATION KW - MONOMERS KW - MOLECULAR weights KW - POLYMERS KW - AB monomer KW - Poly(ether–ketones) KW - Poly(phosphoric acid) N1 - Accession Number: 10059557; Baek, Jong-Beom 1 Tan, Loon-Seng 2; Email Address: loon-seng.tan@wpafb.af.mil; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA 2: Polymer Branch, Materials and Manufacturing Directorate, AFRL/MLBP, Air Force Research Laboratory, 2941 P Street, Room 136 Wright-Patterson Air Force Base, Dayton, OH 45433-7750, USA; Source Info: Jul2003, Vol. 44 Issue 15, p4135; Subject Term: POLYCONDENSATION; Subject Term: POLYMERIZATION; Subject Term: MONOMERS; Subject Term: MOLECULAR weights; Subject Term: POLYMERS; Author-Supplied Keyword: AB monomer; Author-Supplied Keyword: Poly(ether–ketones); Author-Supplied Keyword: Poly(phosphoric acid); Number of Pages: 13p; Document Type: Article L3 - 10.1016/S0032-3861(03)00374-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10059557&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cummings, Russell M. AU - Forsythe, James R. AU - Morton, Scott A. AU - Squires, Kyle D. T1 - Computational challenges in high angle of attack flow prediction JO - Progress in Aerospace Sciences JF - Progress in Aerospace Sciences Y1 - 2003/07// VL - 39 IS - 5 M3 - Article SP - 369 SN - 03760421 AB - Aircraft aerodynamics have been predicted using computational fluid dynamics for a number of years. While viscous flow computations for cruise conditions have become commonplace, the non-linear effects that take place at high angles of attack are much more difficult to predict. A variety of difficulties arise when performing these computations, including challenges in properly modeling turbulence and transition for vortical and massively separated flows, the need to use appropriate numerical algorithms if flow asymmetry is possible, and the difficulties in creating grids that allow for accurate simulation of the flowfield. These issues are addressed and recommendations are made for further improvements in high angle of attack flow prediction. Current predictive capabilities for high angle of attack flows are reviewed, and solutions based on hybrid turbulence models are presented. [Copyright &y& Elsevier] AB - Copyright of Progress in Aerospace Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERODYNAMICS KW - FLUID dynamics N1 - Accession Number: 9906235; Cummings, Russell M. 1; Email Address: rcumming@calpoly.edu Forsythe, James R. 2 Morton, Scott A. 2 Squires, Kyle D. 3; Affiliation: 1: Aerospace Engineering Department, California Polytechnic State University, San Luis Obispo, CA 93407, USA 2: Department of Aeronautics, United States Air Force Academy, USAF Academy, CO 80840, USA 3: Department of Mechanical and Aerospace Engineering, Arizona State University, Tempe, AZ 85287, USA; Source Info: Jul2003, Vol. 39 Issue 5, p369; Subject Term: AERODYNAMICS; Subject Term: FLUID dynamics; Number of Pages: 16p; Document Type: Article L3 - 10.1016/S0376-0421(03)00041-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9906235&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pirzada, Mohsin AU - Grimes, Robin W. AU - Maguire, John F. T1 - Incorporation of divalent ions in A2B2O7 pyrochlores JO - Solid State Ionics JF - Solid State Ionics Y1 - 2003/07// VL - 161 IS - 1/2 M3 - Article SP - 81 SN - 01672738 AB - Oxides with the pyrochlore structure are currently being considered for use in electrochemical devices. As their ionic conductivity must be enhanced by extrinsic doping, it is important to establish the relative ability of pyrochlore compounds to accommodate dopant ions. Here atomistic simulation is used to examine this issue by predicting the energies and structures associated with the incorporation of a range of divalent ions over an extensive pyrochlore compositional range. Results indicate that such dopant ions substitute primarily at A-cation sites with oxygen vacancy compensation, resulting in non-stoichiometric pyrochlore. We also find that the energy to form an oxygen Frenkel pair adjacent to a divalent ion is practically near zero. Both solution and defect clustering binding energies vary significantly as a function of composition. [Copyright &y& Elsevier] AB - Copyright of Solid State Ionics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROCHEMICAL analysis KW - IONS KW - PYROCHROIDAE KW - Binding energy KW - Doping KW - Ionic transport KW - Pyrochlore KW - Simulation N1 - Accession Number: 10570235; Pirzada, Mohsin 1 Grimes, Robin W. 1; Email Address: r.grimes@imperial.ac.uk Maguire, John F. 2; Affiliation: 1: Department of Materials, Imperial College, London SW7 2BP, UK 2: AFRL/MLMR, Air Force Research Laboratory, Wright Patterson AFB, OH 45433, USA; Source Info: Jul2003, Vol. 161 Issue 1/2, p81; Subject Term: ELECTROCHEMICAL analysis; Subject Term: IONS; Subject Term: PYROCHROIDAE; Author-Supplied Keyword: Binding energy; Author-Supplied Keyword: Doping; Author-Supplied Keyword: Ionic transport; Author-Supplied Keyword: Pyrochlore; Author-Supplied Keyword: Simulation; Number of Pages: 11p; Document Type: Article L3 - 10.1016/S0167-2738(03)00165-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10570235&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smart, D.F. AU - Shea, M.A. T1 - The limitations of using vertical cutoff rigidities determined from the IGRF magnetic field models for computing aircraft radiation dose JO - Advances in Space Research JF - Advances in Space Research Y1 - 2003/06/30/ VL - 32 IS - 1 M3 - Article SP - 95 SN - 02731177 AB - Vertical cutoff rigidities derived from the International Geomagnetic Reference Fields (IGRF) are normally used to compute the radiation dose at a specific location and to organize the radiation dose measurements acquired at aircraft altitudes. This paper presents some of the usually ignored limits on the accuracy of the vertical cutoff rigidity models and describes some of the computational artifacts present in these models. It is noted that recent aircraft surveys of the radiation dose experienced along specific flight paths is sufficiently precise that the secular variation of the geomagnetic field is observable. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATION KW - AIRCRAFT carriers KW - GEOMAGNETISM KW - FLIGHT N1 - Accession Number: 11967216; Smart, D.F. 1; Email Address: sssr@msm.com Shea, M.A. 1; Affiliation: 1: Air Force Research Laboratory (VSBA9, 29 Randolph Road, Hanscom AFB, Bedford, MA 01731, USA; Source Info: Jun2003, Vol. 32 Issue 1, p95; Subject Term: RADIATION; Subject Term: AIRCRAFT carriers; Subject Term: GEOMAGNETISM; Subject Term: FLIGHT; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11967216&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smart, D.F. AU - Shea, M.A. T1 - The space-developed dynamic vertical cutoff rigidity model and its applicability to aircraft radiation dose JO - Advances in Space Research JF - Advances in Space Research Y1 - 2003/06/30/ VL - 32 IS - 1 M3 - Article SP - 103 SN - 02731177 AB - We have developed a dynamic geomagnetic vertical cutoff rigidity model that predicts the energetic charged particle transmission through the magnetosphere. Initially developed for space applications, we demonstrate the applicability of this library of cutoff rigidity models for computing aircraft radiation dose. The world grids of vertical cutoff rigidities were obtained by particle trajectory tracing in a magnetospheric model. This reference set of world grids of vertical cutoff rigidities calculated for satellite altitudes covers all magnetic activity levels from super quiet to extremely disturbed (i.e., Kp indices ranging from 0 to 9+) for every three hours in universal time. We utilize the McIlwain “L” parameter as the basis of the interpolation technique to reduce these initial satellite altitude vertical cutoff rigidities to cutoff rigidity values at aircraft altitudes. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GEOMAGNETISM KW - PARTICLE accelerators KW - RIGIDITY (Geometry) KW - INTERPOLATION N1 - Accession Number: 11967217; Smart, D.F. 1; Email Address: sssrc@msn.com Shea, M.A. 1; Affiliation: 1: Air Force Research Laboratory (VSBX), 29 Randolph Road, Hanscom AFB, Bedford, MA 01731, USA; Source Info: Jun2003, Vol. 32 Issue 1, p103; Subject Term: GEOMAGNETISM; Subject Term: PARTICLE accelerators; Subject Term: RIGIDITY (Geometry); Subject Term: INTERPOLATION; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11967217&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smart, D.F. AU - Shea, M.A. T1 - The local time dependence of the anisotropic solar cosmic ray flux JO - Advances in Space Research JF - Advances in Space Research Y1 - 2003/06/30/ VL - 32 IS - 1 M3 - Article SP - 109 SN - 02731177 AB - The distribution of the solar cosmic radiation flux over the earth is not uniform, but the result of complex phenomena involving the interplanetary magnetic field, the geomagnetic field and latitude and longitude of locations on the earth. The latitude effect relates to the geomagnetic shield; the longitude effect relates to local time. For anisotropic solar cosmic ray events the maximum particle flux is always along the interplanetary magnetic field direction sometimes called the Archimedean spiral path from the sun to the earth. During an anisotropic solar cosmic ray event, the locations on the earth viewing “sunward” into the interplanetary magnetic field direction will observe the largest flux (when adjustments are made for the magnetic latitude effect). To relate this phenomena to aircraft routes, for anisotropic solar cosmic ray events that occur during “normal quiescent” conditions, the maximum solar cosmic ray flux (and corresponding solar particle radiation dose) will be observed in the dawn quadrant, ideally at about 06 hours local time. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COSMIC rays KW - RADIATION KW - MAGNETIC fields KW - EARTH (Planet) N1 - Accession Number: 11967218; Smart, D.F. 1; Email Address: sssrc@msn.com Shea, M.A. 1; Affiliation: 1: Air Force Research Laboratory (VSBX), 29 Randolph Road, Hanscom AFB Bedford, MA 01731, USA; Source Info: Jun2003, Vol. 32 Issue 1, p109; Subject Term: COSMIC rays; Subject Term: RADIATION; Subject Term: MAGNETIC fields; Subject Term: EARTH (Planet); Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11967218&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sandhu, S.S. AU - Crowther, R.O. AU - Krishnan, S.C. AU - Fellner, J.P. T1 - Direct methanol polymer electrolyte fuel cell modeling: reversible open-circuit voltage and species flux equations JO - Electrochimica Acta JF - Electrochimica Acta Y1 - 2003/06/30/ VL - 48 IS - 14-16 M3 - Article SP - 2295 SN - 00134686 AB - By the application of thermodynamic fundamentals of phase and electrochemical reaction equilibria, a mathematical equation has been developed to predict the reversible open-circuit voltage of a direct methanol fuel cell (DMFC), in the absence of electrode poisoning and methanol crossover. The equation accounts for the effect of the nonideal behavior of the fluid phases on the reversible open-circuit voltage. Sample computed results are presented. The species (CH3OH, H2O, H+) flux equations to compute molar fluxes through the polymer electrolyte membrane of a DMFC are also presented. [Copyright &y& Elsevier] AB - Copyright of Electrochimica Acta is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROCHEMISTRY KW - FUEL cells KW - THERMODYNAMICS KW - Direct methanol fuel cell KW - Fluid nonideal behavior KW - Open-circuit voltage KW - Phase and electrochemical reaction equilibria KW - Transport fluxes N1 - Accession Number: 10087179; Sandhu, S.S. 1; Email Address: sarwan.sandhu@notes.udayton.edu Crowther, R.O. 1 Krishnan, S.C. 1 Fellner, J.P. 2; Email Address: joseph.fellner@wpafb.af.mil; Affiliation: 1: Department of Chemical and Materials Engineering, University of Dayton, 300 College Park, Dayton, OH 45469-0246, USA 2: Air Force Research Laboratory, Propulsion Directorate, 1950 Fifth Street, Wright-Patterson AFB, Wright-Patterson, OH 45433-251, USA; Source Info: Jun2003, Vol. 48 Issue 14-16, p2295; Subject Term: ELECTROCHEMISTRY; Subject Term: FUEL cells; Subject Term: THERMODYNAMICS; Author-Supplied Keyword: Direct methanol fuel cell; Author-Supplied Keyword: Fluid nonideal behavior; Author-Supplied Keyword: Open-circuit voltage; Author-Supplied Keyword: Phase and electrochemical reaction equilibria; Author-Supplied Keyword: Transport fluxes; Number of Pages: 9p; Document Type: Article L3 - 10.1016/S0013-4686(03)00218-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10087179&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Antonova, N. AU - Firstov, S.A. AU - Miracle, D.B. T1 - Investigation of phase equilibria in the Ti-Al-Si-Nb system at low Nb contents JO - Acta Materialia JF - Acta Materialia Y1 - 2003/06/27/ VL - 51 IS - 11 M3 - Article SP - 3095 SN - 13596454 AB - Phase equilibria in the α/α2 phase region of the Ti-Al-Si-Nb system at Nb content 2.5, 3.5 and 5 at.% were studied in alloys as-cast and heat-treated at 800 °C. Samples were prepared by arc-melting technique, homogenized at 1350 °C and then heat-treated at 800 °C, followed by ice water cooling. The structure of the alloys was characterized by means of X-Ray diffraction, differential thermal analysis, electron probe microanalysis, scanning electron microscopy and transmission electron microscopy.The continuous solid solutions with variable compositions (Ti1−x,Nbx)3(Si1−y,Aly) (η) (0.05≤x≤0.07, 10−3≤y≤0.02) was detected at 800 °C for the first time in the multi-component alloys based upon the Ti-Si system. It was stabilized by Nb additions in the alloys with low Al content. A peritectoid reaction β+α→η was observed. Additions of Al neutralized the stabilizing effect of Nb resulting in an α + Ti5Si3 (z) equilibrium. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - METALLIC composites KW - SILICIDES KW - MICROSTRUCTURE KW - PHASE transformations (Physics) KW - Eutectic solidification KW - Metal matrix composites (MMC) KW - Microstructure KW - Phase Transformations KW - Silicides KW - Titanium alloys N1 - Accession Number: 9905940; Antonova, N. 1; Email Address: nataliyaant@msn.com Firstov, S.A. 1 Miracle, D.B. 2; Affiliation: 1: Institute for the Problems of the Materials Science, National Academy of Ukraine, 3, Krzhizhanovskiy Str., Kiev 03680, Ukraine 2: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/MLLM), 2230 Tenth Street, Wright-Patterson AFB, Dayton, OH 45433-7817, USA; Source Info: Jun2003, Vol. 51 Issue 11, p3095; Subject Term: TITANIUM alloys; Subject Term: METALLIC composites; Subject Term: SILICIDES; Subject Term: MICROSTRUCTURE; Subject Term: PHASE transformations (Physics); Author-Supplied Keyword: Eutectic solidification; Author-Supplied Keyword: Metal matrix composites (MMC); Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Phase Transformations; Author-Supplied Keyword: Silicides; Author-Supplied Keyword: Titanium alloys; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 13p; Document Type: Article L3 - 10.1016/S1359-6454(03)00121-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9905940&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bhushan, Bharat AU - Paquet, Louise AU - Halasz, Annamaria AU - Spain, Jim C. AU - Hawari, Jalal T1 - Mechanism of xanthine oxidase catalyzed biotransformation of HMX under anaerobic conditions JO - Biochemical & Biophysical Research Communications JF - Biochemical & Biophysical Research Communications Y1 - 2003/06/27/ VL - 306 IS - 2 M3 - Article SP - 509 SN - 0006291X AB - Enzyme catalyzed biotransformation of the energetic chemical octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) is not known. The present study describes a xanthine oxidase (XO) catalyzed biotransformation of HMX to provide insight into the biodegradation pathway of this energetic chemical. The rates of biotransformation under aerobic and anaerobic conditions were 1.6 ± 0.2 and 10.5 ± 0.9 nmol h−1 mg protein−1, respectively, indicating that anaerobic conditions favored the reaction. The biotransformation rate was about 6-fold higher using NADH as an electron-donor compared to xanthine. During the course of reaction, the products obtained were nitrite (NO2−), methylenedinitramine (MDNA), 4-nitro-2,4-diazabutanal (NDAB), formaldehyde (HCHO), nitrous oxide (N2O), formic acid (HCOOH), and ammonium (NH4+). The product distribution gave carbon and nitrogen mass-balances of 91% and 88%, respectively. A comparative study with native-, deflavo-, and desulfo-XO and the site-specific inhibition studies showed that HMX biotransformation occurred at the FAD-site of XO. Nitrite stoichiometry revealed that an initial single N-denitration step was sufficient for the spontaneous decomposition of HMX. [Copyright &y& Elsevier] AB - Copyright of Biochemical & Biophysical Research Communications is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ENZYMES KW - XANTHINE oxidase KW - Biotransformation KW - Cyclic nitramine KW - HMX KW - N-denitration KW - Xanthine oxidase N1 - Accession Number: 9948598; Bhushan, Bharat 1 Paquet, Louise 1 Halasz, Annamaria 1 Spain, Jim C. 2 Hawari, Jalal 1; Email Address: jalal.hawari@nrc.ca; Affiliation: 1: Biotechnology Research Institute, National Research Council of Canada, 6100 Royalmount Avenue, Montreal, Que., Canada H4P 2R2 2: US Air Force Research Laboratory, 139 Barnes Dr, Tyndall AFB, FL 32403, USA; Source Info: Jun2003, Vol. 306 Issue 2, p509; Subject Term: ENZYMES; Subject Term: XANTHINE oxidase; Author-Supplied Keyword: Biotransformation; Author-Supplied Keyword: Cyclic nitramine; Author-Supplied Keyword: HMX; Author-Supplied Keyword: N-denitration; Author-Supplied Keyword: Xanthine oxidase; Number of Pages: 7p; Document Type: Article L3 - 10.1016/S0006-291X(03)01001-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9948598&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Glavicic, M.G. AU - Kobryn, P.A. AU - Bieler, T.R. AU - Semiatin, S.L. T1 - An automated method to determine the orientation of the high-temperature beta phase from measured EBSD data for the low-temperature alpha-phase in Ti–6Al–4V JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2003/06/25/ VL - 351 IS - 1/2 M3 - Article SP - 258 SN - 09215093 AB - An automated method to determine the orientation of the high-temperature beta phase from measured electron-backscatter-diffraction (EBSD) data for the low-temperature alpha-phase in Ti–6Al–4V was developed to provide a solution for multiple prior-beta grains within a single data set. This technique is an improvement over existing methods because it does not require a priori knowledge of the variant selection process or the location of prior-beta grain boundaries, and it can transform an arbitrary field of EBSD data containing the variants from many prior-beta grains in a single calculation. It is a general method and therefore can be used to examine texture relationships in materials other than Ti–6Al–4V which undergo a burgers-type phase transformation. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHASE transformations (Physics) KW - OPTICAL diffraction KW - Burgers relation KW - Electron-backscatter-diffraction KW - Phase transformations KW - Texture KW - Titanium N1 - Accession Number: 9498263; Glavicic, M.G. 1; Email Address: rivglav@msn.com Kobryn, P.A. 2 Bieler, T.R. 3 Semiatin, S.L. 2; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMP, Wright-Patterson AFB, OH 45433-7817, USA 3: Department of Materials Science and Mechanics, Michigan State University, East Lansing, MI 48824-1226, USA; Source Info: Jun2003, Vol. 351 Issue 1/2, p258; Subject Term: PHASE transformations (Physics); Subject Term: OPTICAL diffraction; Author-Supplied Keyword: Burgers relation; Author-Supplied Keyword: Electron-backscatter-diffraction; Author-Supplied Keyword: Phase transformations; Author-Supplied Keyword: Texture; Author-Supplied Keyword: Titanium; Number of Pages: 7p; Document Type: Article L3 - 10.1016/S0921-5093(02)00844-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9498263&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jha, S.K. AU - Larsen, J.M. AU - Rosenberger, A.H. AU - Hartman, G.A. T1 - Dual fatigue failure modes in Ti–6Al–2Sn–4Zr–6Mo and consequences on probabilistic life prediction JO - Scripta Materialia JF - Scripta Materialia Y1 - 2003/06/15/ VL - 48 IS - 12 M3 - Article SP - 1637 SN - 13596462 AB - The variability in fatigue life of the Ti–6Al–2Sn–4Zr–6Mo (Ti-6-2-4-6) alloy was investigated. Cumulative life distribution plots were found to be composed of two failure mechanisms. The data could be closely represented by a cumulative distribution function (CDF) resulting from the superposition of the CDFs of the individual mechanisms. An approach for life prediction based on the data due to the worst-case mechanism is suggested. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FATIGUE KW - DISTRIBUTION (Probability theory) KW - Cumulative distribution function KW - Fatigue life variability KW - Microstructure KW - Probability of failure N1 - Accession Number: 9572537; Jha, S.K. 1; Email Address: sushantjha@hotmail.com Larsen, J.M. 2 Rosenberger, A.H. 2 Hartman, G.A. 3; Affiliation: 1: Systran Federal Corporation, Behavior and Life Prediction, 4027 Col. Glenn HWY, Suite 210, Dayton, OH 45431, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMN Wright-Patterson AFB, Dayton, OH 45433, USA 3: The University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA; Source Info: Jun2003, Vol. 48 Issue 12, p1637; Subject Term: FATIGUE; Subject Term: DISTRIBUTION (Probability theory); Author-Supplied Keyword: Cumulative distribution function; Author-Supplied Keyword: Fatigue life variability; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Probability of failure; Number of Pages: 6p; Document Type: Article L3 - 10.1016/S1359-6462(03)00132-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9572537&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lucia, David J. AU - Beran, Philip S. T1 - Projection methods for reduced order models of compressible flows JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2003/06/10/ VL - 188 IS - 1 M3 - Article SP - 252 SN - 00219991 AB - Two different projection methods, Galerkin projection and direct projection, are developed for reduced-order modeling applications. The projection methods are used to identify low-dimensional systems of ordinary differential equations to represent the dynamics of a compressible, two-dimensional, inviscid flow-field under oscillatory forcing. Proper orthogonal decomposition is used to identify a small number of fluid modes to serve as the basis functions for the projections. Performance is evaluated relative to a high-order numerical model in terms of accuracy, order reduction, and computational efficiency. The treatment of boundary conditions, and stability of the reduced-order model are addressed in detail. The methods developed in this paper are suitable for general application to the Euler equations. With the addition of dissipation parameters, both the Galerkin projection and direct projection methods are tractable, stable, and properly treat the boundary conditions. [Copyright &y& Elsevier] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ORTHOGONAL decompositions KW - GALERKIN methods KW - Compressible flow KW - Euler equations KW - Galerkin projection KW - Proper orthogonal decomposition KW - Reduced order modeling N1 - Accession Number: 9808728; Lucia, David J.; Email Address: david.lucia@wpafb.af.mil Beran, Philip S. 1; Affiliation: 1: Air Force Research Laboratory, AFRL/VASD, 2210 Eight Street, Bldg. 146, WPAFB, OH 45433, USA; Source Info: Jun2003, Vol. 188 Issue 1, p252; Subject Term: ORTHOGONAL decompositions; Subject Term: GALERKIN methods; Author-Supplied Keyword: Compressible flow; Author-Supplied Keyword: Euler equations; Author-Supplied Keyword: Galerkin projection; Author-Supplied Keyword: Proper orthogonal decomposition; Author-Supplied Keyword: Reduced order modeling; Number of Pages: 29p; Document Type: Article L3 - 10.1016/S0021-9991(03)00166-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9808728&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Price, Stephan D. AU - Mizuno, Don. AU - Murdock, Thomas L. T1 - Thermal profiles of the eclipsed moon JO - Advances in Space Research JF - Advances in Space Research Y1 - 2003/06// VL - 31 IS - 11 M3 - Article SP - 2299 SN - 02731177 AB - The Midcourse Space Experiment (MSX) mapped the thermal 4.3 μm emission from the Moon during the eclipse of 27 September 1996 UT with a resolution of about 30″. MSX obtained ten 4.3 μm brightness temperature maps, one every 1 to 3 minutes, during the three twenty minute observations of the eclipse and was thus able to define spatially resolved (45km) cooling curves over the entire lunar surface. A large number of hot spots were observed that correlate well with those noted by previous observers. The hotspots tend to correspond to craters. Certain more extended regions, the maria and portions of maria, are warmer than the highlands. The 4.3 μm temperature contrasts observed at various regions of the eclipsed Moon by MSX also agree with the mid-infrared values previously published, although there is a tendency for the MSX values to be warmer. The MSX observations of the uneven cooling during the eclipse provide information on the thermo-physical properties of the various features. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OUTER space KW - ASTRONOMICAL photometry KW - ECLIPSES KW - MOON KW - EXPLORATION N1 - Accession Number: 11730059; Price, Stephan D. 1; Email Address: Steve.Price@hanscom.af.mil Mizuno, Don. 2 Murdock, Thomas L. 3; Affiliation: 1: Air Force Research Laboratory (VSBC), 29 Randolph Road, Hanscom AFB, MA 01731, USA 2: Boston College, St. Clement's Hall, 140 Commonwealth Avenue, Chestnut Hill, MA 02167, USA 3: Frontier Technology Inc. 100 Cummings Center, Suite 450G, Beverly, MA 01915, USA; Source Info: Jun2003, Vol. 31 Issue 11, p2299; Subject Term: OUTER space; Subject Term: ASTRONOMICAL photometry; Subject Term: ECLIPSES; Subject Term: MOON; Subject Term: EXPLORATION; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11730059&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kelsall, Robert W. AU - Soref, Richard A. T1 - Silicon-Germanium Quantum-Cascade Lasers. JO - International Journal of High Speed Electronics & Systems JF - International Journal of High Speed Electronics & Systems Y1 - 2003/06// VL - 13 IS - 2 M3 - Article SP - 547 PB - World Scientific Publishing Company SN - 01291564 AB - The prospects and advantages of silicon germanium quantum cascade lasers are discussed, from both physical and technological perspectives. A range of Si/SiGe intersubband laser configurations are discussed, for both edge and surface emission. Recent experimental activity on mid- and far-infrared devices is reviewed, and the value of detailed theoretical tools for heterostructure design is highlighted. Steps towards silicon optoelectronic integration are also considered. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of High Speed Electronics & Systems is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON KW - GERMANIUM KW - LASERS KW - OPTOELECTRONICS KW - intersubband KW - Silicon optoelectronics KW - terahertz KW - virtual substrate N1 - Accession Number: 10630271; Kelsall, Robert W. 1 Soref, Richard A. 2; Affiliation: 1: School of Electronic and Electrical Engineering University of Leeds, Leeds LS2 9JT, UK. 2: Sensors Directorate, Air Force Research Laboratory Hanscom Air Force Base, MA 01731-2909, USA.; Source Info: Jun2003, Vol. 13 Issue 2, p547; Subject Term: SILICON; Subject Term: GERMANIUM; Subject Term: LASERS; Subject Term: OPTOELECTRONICS; Author-Supplied Keyword: intersubband; Author-Supplied Keyword: Silicon optoelectronics; Author-Supplied Keyword: terahertz; Author-Supplied Keyword: virtual substrate; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 27p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10630271&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barlow, Cassie B. AU - Jordan, Mark AU - Hendrix, William H. T1 - CHARACTER ASSESSMENT: AN EXAMINATION OF LEADERSHIP LEVELS. JO - Journal of Business & Psychology JF - Journal of Business & Psychology Y1 - 2003///Summer2003 VL - 17 IS - 4 M3 - Article SP - 563 EP - 584 SN - 08893268 AB - This paper discusses character assessment from a leadership level perspective. The organization studied is developing a leadership model for the next century. One of the leadership traits identified as essential was character. Approximately one thousand managers in the company were given two character assessment instruments via a Web-based medium. Significant differences were found between early-, mid-, and mature-level managers with an increasing trend in character traits across the levels. This research is consistent with Katz and Kahn's (1976) levels of leadership research. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Business & Psychology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEADERSHIP KW - EXECUTIVE ability (Management) -- Testing KW - CHARACTER KW - INDUSTRIAL psychology KW - ORGANIZATIONAL sociology KW - DIFFERENTIAL psychology KW - assessment KW - character assessment KW - leadership N1 - Accession Number: 10017608; Barlow, Cassie B. 1; Email Address: cassie.barlow@pentagon.af.mil Jordan, Mark 1 Hendrix, William H. 2; Affiliation: 1: Air University. 2: US Air Force Academy.; Source Info: Summer2003, Vol. 17 Issue 4, p563; Subject Term: LEADERSHIP; Subject Term: EXECUTIVE ability (Management) -- Testing; Subject Term: CHARACTER; Subject Term: INDUSTRIAL psychology; Subject Term: ORGANIZATIONAL sociology; Subject Term: DIFFERENTIAL psychology; Author-Supplied Keyword: assessment; Author-Supplied Keyword: character assessment; Author-Supplied Keyword: leadership; Number of Pages: 22p; Illustrations: 1 Diagram, 8 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10017608&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Johnson, Dawn M. AU - Sheahan, Timothy C. AU - Chard, Kathleen M. T1 - Personality Disorders, Coping Strategies, and Posttraumatic Stress Disorder in Women with Histories of Childhood Sexual Abuse. JO - Journal of Child Sexual Abuse JF - Journal of Child Sexual Abuse Y1 - 2003/06// VL - 12 IS - 2 M3 - Article SP - 19 EP - 39 SN - 10538712 AB - Using a treatment-seeking sample of adult female survivors of childhood sexual abuse, the relationships between coping strategies, personality disorders (PD) and Posttraumatic Stress Disorder (PTSD) were explored. A variety of PDs were found to exist in this population, with avoidant, antisocial, dependent PDs having higher frequencies than borderline PD. Avoidant coping and PTSD severity significantly correlated with many of these PDs. PTSD severity and avoidant coping were also significantly correlated. Additionally, women with PTSD displayed higher rates of avoidant and dependent PDs, as well as more avoidant coping, than did women without PTSD. Results support a more complex conceptualization of the trauma-related symptoms that occur in adult survivors of childhood sexual abuse that incorporate the relationships between avoidant coping, personality disorders, and PTSD. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Child Sexual Abuse is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADULT child sexual abuse victims KW - ADJUSTMENT (Psychology) KW - PERSONALITY disorders KW - POST-traumatic stress disorder KW - SEXUAL abuse victims KW - AVOIDANT personality disorder KW - Childhood sexual abuse KW - coping styles KW - personality disorders N1 - Accession Number: 12667362; Johnson, Dawn M. 1 Sheahan, Timothy C. 2 Chard, Kathleen M. 3; Email Address: kchar0@pop.uky.edu; Affiliation: 1: Brown University School of Medicine 2: United States Air Force 3: Center for Traumatic Stress Research, University of Kentucky; Source Info: 2003, Vol. 12 Issue 2, p19; Subject Term: ADULT child sexual abuse victims; Subject Term: ADJUSTMENT (Psychology); Subject Term: PERSONALITY disorders; Subject Term: POST-traumatic stress disorder; Subject Term: SEXUAL abuse victims; Subject Term: AVOIDANT personality disorder; Author-Supplied Keyword: Childhood sexual abuse; Author-Supplied Keyword: coping styles; Author-Supplied Keyword: personality disorders; Number of Pages: 21p; Illustrations: 3 Charts; Document Type: Article L3 - 10.1300/J070v12n02_02 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12667362&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Andrew D. Katayama, Jake AU - Crooks, Steven M. T1 - Online Notes: Differential Effects of Studying Complete or Partial Graphically Organized Notes. JO - Journal of Experimental Education JF - Journal of Experimental Education Y1 - 2003///Summer2003 VL - 71 IS - 4 M3 - Article SP - 293 EP - 312 PB - Taylor & Francis Ltd SN - 00220973 AB - The authors investigated in this study the effects of two electronic notes conditions (complete vs. partial) and two testing conditions (immediate vs. delayed) on three types of tests (fact, structure, and application). A 2 × 2 factorial multivariate analysis of variance (MANOVA) yielded no significant main effects for notes conditions on the fact and structure tests. The results did show a significant main effect for notes conditions (partial > control) on the application test and for testing condition. Students tested immediately performed significantly better than those in the delayed condition on all three outcome measures. Results also show significant inter-actions between Notes Condition × Testing Condition on the structure and application tests. Implications and limitations of computerized notes are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Experimental Education is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIVARIATE analysis KW - EDUCATION -- Graphic methods KW - GRAPHIC organizers KW - TEACHING aids & devices KW - electronic study notes KW - graphic organizers KW - note taking. N1 - Accession Number: 11453631; Andrew D. Katayama, Jake 1; Email Address: andrew.katayama@usafa.af.mil Crooks, Steven M. 2; Affiliation: 1: United States Air Force Academy. 2: Texas Tech University.; Source Info: Summer2003, Vol. 71 Issue 4, p293; Subject Term: MULTIVARIATE analysis; Subject Term: EDUCATION -- Graphic methods; Subject Term: GRAPHIC organizers; Subject Term: TEACHING aids & devices; Author-Supplied Keyword: electronic study notes; Author-Supplied Keyword: graphic organizers; Author-Supplied Keyword: note taking.; Number of Pages: 20p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11453631&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jauchem, James R. T1 - A LITERATURE REVIEW OF MEDICAL SIDE EFFECTS FROM RADIO-FREQUENCY ENERGY IN THE HUMAN ENVIRONMENT: INVOLVING CANCERS TUMORS, AND PROBLEMS OF THE CENTRAL NERVOUS SYSTEM. JO - Journal of Microwave Power & Electromagnetic Energy JF - Journal of Microwave Power & Electromagnetic Energy Y1 - 2003/06// VL - 38 IS - 2 M3 - Article SP - 103 EP - 123 SN - 08327823 AB - Occupational or residential exposures to radio-frequency energy (RFE), including microwaves, have been alleged to result in health problems. This paper is a review of the recent medical and scientific literature (from mid-1998 through 2002) dealing with possible effects of RFE on brain tumors and malignancies, leukemia, other cancers, and the central nervous system. A large number of studies were related to exposures from cellular telephones. On the basis of previous reviews of older literature and the current review of recent literature, one can conclude that the evidence for any proven health effects (related to the topics above) of low-level RFE exposure is minimal. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Microwave Power & Electromagnetic Energy is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIO frequency KW - RADIO measurements KW - BRAIN tumors KW - LEUKEMIA KW - CANCER KW - cancer KW - cellular phones KW - central nervous system KW - electromagnetics KW - human effects of microwaves KW - industrial scientific and N1 - Accession Number: 13347051; Jauchem, James R. 1; Affiliation: 1: Air Force Research Laboratory, in the Directed Energy Bioeffects Division of the Radio Frequency Radiation Branch, San Antonio, Texas USA; Source Info: 2003, Vol. 38 Issue 2, p103; Subject Term: RADIO frequency; Subject Term: RADIO measurements; Subject Term: BRAIN tumors; Subject Term: LEUKEMIA; Subject Term: CANCER; Author-Supplied Keyword: cancer; Author-Supplied Keyword: cellular phones; Author-Supplied Keyword: central nervous system; Author-Supplied Keyword: electromagnetics; Author-Supplied Keyword: human effects of microwaves; Author-Supplied Keyword: industrial scientific and; Number of Pages: 22p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13347051&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fellner, J.P. AU - Loeber, G.J. AU - Vukson, S.P. AU - Riepenhoff, C.A. T1 - Lithium-ion testing for spacecraft applications JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2003/06// VL - 119-121 M3 - Article SP - 911 SN - 03787753 AB - The Air Force Research Laboratory is developing lithium-ion batteries for low earth orbit (LEO) and geosynchronous earth orbit (GEO) spacecraft applications. As a part of this lithium-ion battery development effort, a testing program is underway to determine the viability of lithium-ion batteries for LEO/GEO applications. For LEO, lithium-ion battery cycle lifetimes of >60,000 cycles at 25% depth-of-discharge (DOD) are projected. For GEO, lifetimes of >14 years at 80% depth-of-discharge are projected. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STORAGE batteries KW - LITHIUM cells KW - GEO KW - LEO KW - Lithium-ion battery KW - Rechargeable KW - Spacecraft N1 - Accession Number: 9991229; Fellner, J.P. 1; Email Address: joseph.fellner@wpafb.af.mil Loeber, G.J. 1 Vukson, S.P. 1 Riepenhoff, C.A. 2; Affiliation: 1: Air Force Research Laboratory, Propulsion Directorate, 1950 Fifth Street, Wright-Patterson AFB, OH 45433-7251, USA 2: Wyle Laboratories, Technical Support Services, 4200 Colonel Glenn, Suite 900, Dayton, OH 45431, USA; Source Info: Jun2003, Vol. 119-121, p911; Subject Term: STORAGE batteries; Subject Term: LITHIUM cells; Author-Supplied Keyword: GEO; Author-Supplied Keyword: LEO; Author-Supplied Keyword: Lithium-ion battery; Author-Supplied Keyword: Rechargeable; Author-Supplied Keyword: Spacecraft; NAICS/Industry Codes: 335911 Storage Battery Manufacturing; NAICS/Industry Codes: 335910 Battery manufacturing; Number of Pages: 3p; Document Type: Article L3 - 10.1016/S0378-7753(03)00222-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9991229&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vittori, Jodi T1 - Allah's Mountains: The Battle for Chechnya (Book). JO - Nationalism & Ethnic Politics JF - Nationalism & Ethnic Politics Y1 - 2003///Summer2003 VL - 9 IS - 2 M3 - Book Review SP - 147 EP - 148 SN - 13537113 AB - Reviews the book "Allah's Mountains: The Battle for Chechnya," by Sebastian Smith. KW - ETHNIC groups KW - NONFICTION KW - SMITH, Sebastian KW - ALLAH'S Mountains (Book) N1 - Accession Number: 12343897; Vittori, Jodi 1; Affiliation: 1: US Air Force Academy; Source Info: Summer2003, Vol. 9 Issue 2, p147; Subject Term: ETHNIC groups; Subject Term: NONFICTION; Reviews & Products: ALLAH'S Mountains (Book); People: SMITH, Sebastian; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12343897&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Butler, Michelle A. AU - Bennett, Thomas L. T1 - In Search of a Conceptualization of Multiple Sclerosis: A Historical Perspective. JO - Neuropsychology Review JF - Neuropsychology Review Y1 - 2003/06// VL - 13 IS - 2 M3 - Article SP - 93 EP - 112 SN - 10407308 AB - A thorough understanding of Multiple Sclerosis (MS) is necessary to offer individuals informed options for treatment and planning. To assist in this quest, the following historical analysis examined how MS has been conceived from the 14th century through the early 20th century. Primary sources were consulted whenever possible, and many of the original archival materials were accessed by the first author (MB) during an on-site visit to the Rare Book Room of the New York Academy of Medicine. There is a striking similarity between how MS symptoms have presented throughout history compared with the 21st century. Sensorimotor and cognitive sequelae have been observed in patients since the 1800s. Cognitive symptoms were acknowledged in the 1800s, but disregarded in the early 1900s and were not given recognition again until the latter part of the 20th century. If conceptualizations of MS are inaccurate, patients will not be served well. In contrast to the shared symptomatology across time, early conceptualizations of etiology and treatment choices differed dramatically from today, a genuine reflection of the times in which they were created. [ABSTRACT FROM AUTHOR] AB - Copyright of Neuropsychology Review is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIPLE sclerosis KW - THERAPEUTICS KW - MYELIN sheath -- Diseases KW - VIRUS diseases KW - NEW York (State) KW - cognitive deficits KW - demyelinating disease KW - history KW - multiple sclerosis N1 - Accession Number: 17010247; Butler, Michelle A. 1; Email Address: michelle.butler@usafa.af.mil Bennett, Thomas L. 2,3; Affiliation: 1: Department of Behavioral Sciences and Leadership at the United States Air Force Academy, USAF Academy, Colorado 2: Center for Neurorehabilitation Services, Fort Collins, Colorado 3: Colorado State University, Fort Collins, Colorado; Source Info: Jun2003, Vol. 13 Issue 2, p93; Subject Term: MULTIPLE sclerosis; Subject Term: THERAPEUTICS; Subject Term: MYELIN sheath -- Diseases; Subject Term: VIRUS diseases; Subject Term: NEW York (State); Author-Supplied Keyword: cognitive deficits; Author-Supplied Keyword: demyelinating disease; Author-Supplied Keyword: history; Author-Supplied Keyword: multiple sclerosis; Number of Pages: 20p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=17010247&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baek, Jong-Beom AU - Tan, Loon-Seng T1 - Linear-hyperbranched copolymerization as a tool to modulate thermal properties and crystallinity of a para-poly(ether-ketone) JO - Polymer JF - Polymer Y1 - 2003/06// VL - 44 IS - 12 M3 - Article SP - 3451 SN - 00323861 AB - The AB2 monomer, 3,5-bis(4-fluorobenzoyl)phenol was synthesized via an improved four-step scheme. It was polymerized to form the corresponding fluoride-terminated hyperbranched polymer with higher molecular weight than previously reported, as evidenced by higher glass-transition temperature (Tg=159 °C vs. 140–143 °C). The homopolymerization showed a bimodal molecular weight distribution that was also observed for other related linear-hyperbranched systems. The AB2 monomer was then copolymerized with 4-fluoro-4′-hydroxybenzophenone (AB monomer), in weight ratios of 1:3, 1:1 and 3:1 to afford the respective hyperbranched poly(ether-ketones) with variable degrees of branching. The 1:1 copolymer had Tg value (212 °C) that was significantly (35 °C) higher than both linear and hyperbranched homopolymers. Only the 1:3 copolymer was semi-crystalline, displaying melting at 340 °C and its wide angle X-ray scattering (WAXS) pattern indicated that its crystal structure is exactly the same as that of the linear homopolymer. The WAXS results of the copolymers correlated well with differential scanning calorimetry and themogravimetric analysis results. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERIZATION KW - COPOLYMERS KW - MONOMERS KW - 3,5-Bis(4-fluorobenzoyl)phenol KW - 4-Fluoro-4′-hydroxybenzophenone KW - Linear-hyperbranched copolymer N1 - Accession Number: 9791393; Baek, Jong-Beom 1 Tan, Loon-Seng 2; Email Address: loon-seng.tan@wpafbl.af.mil; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA 2: Polymer Branch, Materials & AFRL/MLBP, Air Force Research Laboratory, Manufacturing Technology Directorate, 2491 P Street, Room 136, Wright-Patterson Air Force Base, Dayton, OH 45433-7750, USA; Source Info: Jun2003, Vol. 44 Issue 12, p3451; Subject Term: POLYMERIZATION; Subject Term: COPOLYMERS; Subject Term: MONOMERS; Author-Supplied Keyword: 3,5-Bis(4-fluorobenzoyl)phenol; Author-Supplied Keyword: 4-Fluoro-4′-hydroxybenzophenone; Author-Supplied Keyword: Linear-hyperbranched copolymer; Number of Pages: 9p; Document Type: Article L3 - 10.1016/S0032-3861(03)00163-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9791393&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Luo, B. AU - Ren, F. AU - Allums, K.K. AU - Gila, B.P. AU - Onstine, A.H. AU - Abernathy, C.R. AU - Pearton, S.J. AU - Dwivedi, R. AU - Fogarty, T.N. AU - Wilkins, R. AU - Fitch, R.C. AU - Gillespie, J.K. AU - Jenkins, T.J. AU - Dettmer, R. AU - Sewell, J. AU - Via, G.D. AU - Crespo, A. AU - Baca, A.G. AU - Shul, R.J. T1 - Proton irradiation of MgO- or Sc2O3 passivated AlGaN/GaN high electron mobility transistors JO - Solid-State Electronics JF - Solid-State Electronics Y1 - 2003/06// VL - 47 IS - 6 M3 - Article SP - 1015 SN - 00381101 AB - AlGaN/GaN high electron mobility transistors with either MgO or Sc2O3 surface passivation were irradiated with 40 MeV protons at a dose of 5×109 cm−2. While both forward and reverse bias current were decreased in the devices as a result of decreases in channel doping and introduction of generation–recombination centers, there was no significant change observed in gate lag measurements. By sharp contrast, unpassivated devices showed significant decreases in drain current under pulsed conditions for the same proton dose. These results show the effectiveness of the oxide passivation in mitigating the effects of surface states present in the as-grown structures and also of surface traps created by the proton irradiation. [Copyright &y& Elsevier] AB - Copyright of Solid-State Electronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRANSISTORS KW - SOLID state electronics N1 - Accession Number: 9230338; Luo, B. 1 Ren, F. 1; Email Address: ren@che.ufl.edu Allums, K.K. 2 Gila, B.P. 2 Onstine, A.H. 2 Abernathy, C.R. 2 Pearton, S.J. 2 Dwivedi, R. 3 Fogarty, T.N. 3 Wilkins, R. 3 Fitch, R.C. 4 Gillespie, J.K. 4 Jenkins, T.J. 4 Dettmer, R. 4 Sewell, J. 4 Via, G.D. 4 Crespo, A. 4 Baca, A.G. 5 Shul, R.J. 5; Affiliation: 1: Department of Chemical Engineering, University of Florida, P.O. Box 116005, Gainesville, FL 32611, USA 2: Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA 3: Center for Applied Radiation Research, Prairie View A&M University, Prairie View, TX 77446, USA 4: Air Force Research Laboratory, Sensors Directorate Wright-Patterson AFB, OH 45433-7322, USA 5: Sandia National Laboratories, Albuquerque, NM 87185, USA; Source Info: Jun2003, Vol. 47 Issue 6, p1015; Subject Term: TRANSISTORS; Subject Term: SOLID state electronics; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 334413 Semiconductor and Related Device Manufacturing; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/S0038-1101(02)00468-9 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9230338&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bolia, Robert S. AU - Slyh, Raymond E. T1 - Perception of stress and speaking style for selected elements of the SUSAS database JO - Speech Communication JF - Speech Communication Y1 - 2003/06// VL - 40 IS - 4 M3 - Article SP - 493 SN - 01676393 AB - The Speech Under Simulated and Actual Stress (SUSAS) database is a collection of utterances recorded under conditions of simulated or actual stress, the purpose of which is to allow researchers to study the effects of stress and speaking style on the speech waveform. The aim of the present investigation was to assess the perceptual validity of the simulated portion of the database by determining the extent to which listeners classify its utterances according to their assigned labels. Seven listeners performed an eight-alternative, forced-choice response, judging whether monosyllabic or disyllabic words spoken by talkers from three different regional accent classes (Boston, General American, New York) were best classified as, clear, fast, loud, neutral, question, slow, or soft. Mean percentages of “correct” judgments were analysed using a 3 (regional accent class) × 2 (number of syllables) × 8 (speaking style) repeated measures analysis of variance. Results indicate that, overall, listeners correctly classify the utterances only 58% of the time, and that the percentage of correct classifications varies as a function of all three independent variables. (English) [Copyright &y& Elsevier] AB - La base de donne´es SUSAS est une collection de phrases enregistre´es dans des conditions de stress simule´ ou re´el dans le but d’e´tudier l’influence du stress et du style sur le signal acoustique. L’objet de la pre´sente e´tude e´tait la validation perceptuelle de la partie simule´e de la base de donne´es. Sept auditeurs jugeaient que les mots monosyllabiques ou dissyllabiques e´nonce´s par des locuteurs e´taient perc¸us comme e´tant prononce´s de fac¸on Cole´rique, Claire, Rapide, Forte, Neutre, Interrogative, Lente ou Douce. Les locuteurs ont un accent soit de Boston, de New-York ou plus ge´ne´ralement de type americain. La moyenne des pourcentages de jugements “corrects” e´taient soumise a` une analyse de la variance, qui montre que le pourcentage des classifications correctes e´tait seulement de 58%, et que ce pourcentage e´tait une fonction de l’accent, du style de parole, et du nombre de syllabes. (French) [Copyright 2003 Elsevier] AB - Die SUSAS Datei beinhaltet eine Sammlung von A¨usserungen, welche aufgenommen wurden unter Bedingungen mit simulierten oder tatsa¨chlichem Stress, zur Untersuchung von Stress- und Sprechstilauswirkungen auf Sprachsignal. Die Absicht dieser Recherche lag darin die Wahrnehmungshu¨ltigkeit des simulierten Teils der Datei zu messen durch Ermittlung in wie weit Zuho¨rer A¨usserungen deren vorbestimmten Kategorien zuordnen. Sieben Ho¨rer erhielten die Aufgabe zu entscheiden ob ein- oder zweisilbige Worte von Sprechern von drei Gruppen mit unterschiedlichem regionalen Akzent (Boston, General American, New York) am besten als vera¨rgert, klar, schnell, laut, neutral, fragend, langsam, oder sanft einzustufen sind. Prozentdurchschnitte von “richtigen” Bestimmungen wurden analysiert mit Hilfe von 3 (regionale Akzent Gruppen) × 2 (Silbenzahl) × 8 (Sprechstil) wiederholten Varianzanalysen. Resultate scheinen anzudeuten daß im Grossen und Ganzen Hoerer nur in 58% der Faelle Aeusserungen richtig klassifizieren und dass der Prozentsatz korrekter Einordnungen von allen drei Variablen abha¨ngig ist. (German) [Copyright 2003 Elsevier] AB - Copyright of Speech Communication is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPEECH perception KW - DATABASES KW - Speech perception KW - Speech recognition KW - Stressed speech KW - SUSAS N1 - Accession Number: 9656634; Bolia, Robert S.; Email Address: robert.bolia@wpafb.af.mil Slyh, Raymond E. 1; Affiliation: 1: Air Force Research Laboratory (AFRL/HECP), 2255 H Street, Wright-Patterson Air Force Base, OH 45433-7022, USA; Source Info: Jun2003, Vol. 40 Issue 4, p493; Subject Term: SPEECH perception; Subject Term: DATABASES; Author-Supplied Keyword: Speech perception; Author-Supplied Keyword: Speech recognition; Author-Supplied Keyword: Stressed speech; Author-Supplied Keyword: SUSAS; Number of Pages: 9p; Document Type: Article L3 - 10.1016/S0167-6393(02)00129-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9656634&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hussain, Saber M. AU - Frazier, John M. T1 - Involvement of apoptosis in hydrazine induced toxicity in rat primary hepatocytes JO - Toxicology in Vitro JF - Toxicology in Vitro Y1 - 2003/06// VL - 17 IS - 3 M3 - Article SP - 343 SN - 08872333 AB - The current study was undertaken to investigate the role of apoptosis in hydrazine induced hepatotoxicity. Hepatocytes were exposed to hydrazinium nitrate (HzN) at two doses (50 and 75 mM) for 2 h then placed in fresh HzN-free media and cultured for an additional 24 h. Post-exposure, cell viability was evaluated at several time points by lactate dehydrogenase (LDH) leakage and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) reduction. Markers of apoptosis (mitochondrial membrane potential, annexin binding, DNA fragmentation, caspase activation, and cytochrome c release) were measured 24 h post-exposure. The viability data showed time dependent increase in LDH leakage at 75 mM of HzN, with only a slight increase at 50 mM. MTT reduction showed a decrease in mitochondrial activity at both doses immediately after the 2 h continous exposure. However, MTT reduction returned to normal at 50 mM while at 75 mM, MTT reduction initially recovered but then deteriorated to approximately 50% of controls at 24 h post-exposure. Based on viability data, exposure to 50 mM HzN for 2 h is a marginally toxic dose while 75 mM is a significantly toxic dose. The results for apoptosis biomarkers showed a reduction in mitochondrial membrane potential, an increase in annexin binding, an increase in total caspase activity, moderate activation of caspase-3, and release of cytochrome c. However, the appearance of DNA fragmentation in HzN exposed cells was very low compared to positive controls (cadmium and cyclosporine). The possibility that HzN induces apoptosis without the involvement of DNA fragmentation can not be ruled out. The present results, overall, suggest that apoptosis may be a contributing factor in acute HzN toxicity. [Copyright &y& Elsevier] AB - Copyright of Toxicology in Vitro is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - APOPTOSIS KW - DNA KW - CELL death KW - CELL membranes KW - IMMUNOSUPPRESSIVE agents KW - Apoptosis KW - DNA fragmentation KW - Hepatocytes KW - Hydrazine KW - In vitro toxicity N1 - Accession Number: 9854740; Hussain, Saber M. 1; Email Address: saber.hussain@wpafb.af.mil Frazier, John M. 2; Affiliation: 1: ManTech Environmental Technology, Inc. Dayton, OH 45437, USA 2: Operational Toxicology Branch (AFRL/HEST), Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7400, USA; Source Info: Jun2003, Vol. 17 Issue 3, p343; Subject Term: APOPTOSIS; Subject Term: DNA; Subject Term: CELL death; Subject Term: CELL membranes; Subject Term: IMMUNOSUPPRESSIVE agents; Author-Supplied Keyword: Apoptosis; Author-Supplied Keyword: DNA fragmentation; Author-Supplied Keyword: Hepatocytes; Author-Supplied Keyword: Hydrazine; Author-Supplied Keyword: In vitro toxicity; Number of Pages: 13p; Document Type: Article L3 - 10.1016/S0887-2333(03)00022-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9854740&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gorsse, S. AU - Miracle, D.B. T1 - Mechanical properties of Ti-6Al-4V/TiB composites with randomly oriented and aligned TiB reinforcements JO - Acta Materialia JF - Acta Materialia Y1 - 2003/05/23/ VL - 51 IS - 9 M3 - Article SP - 2427 SN - 13596454 AB - In situ Ti-6Al-4V/TiB discontinuously reinforced composites, containing 20 and 40% of TiB whiskers by volume, were produced by blending Ti, Al/V, and TiB2 powders. The consolidated powder blends were annealed to transform the TiB2 particles to TiB. The microstructural evolution of the composite was studied as a function of heat treatment duration at 1100, 1200, 1300 and 1400 °C. The mechanical properties of Ti-6Al-4V/TiB composites were established in tension and compression at room temperature and 300 °C, and by resonant ultrasound spectroscopy (RUS), for the two volume fractions of TiB, and for randomly oriented and aligned arrays of TiB whiskers. The average Young’s modulus of the composite with 20% of randomly oriented TiB whiskers was 153 GPa, compared to 109 GPa for unreinforced Ti-6Al-4V. The average Young’s modulus of composites with 20 and 40% of aligned TiB whiskers was measured along the extrusion axis as 169 and 205 GPa, respectively. The stiffness of TiB whiskers was determined from bulk measurements with the Halpin-Tsai equation to be 482 GPa. Yield and ultimate strengths near 1200 MPa were measured. The strength and ductility of the materials were limited in the present study by non-optimal matrix microstructure and inadequate particulate distribution, and approaches for properties improvements are provided. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - METALLIC composites KW - TITANIUM alloys KW - TESTING KW - Elastic behavior KW - Mechanical properties testing KW - Metal matrix composites KW - Powder consolidation KW - Titanium alloys N1 - Accession Number: 9601039; Gorsse, S. 1 Miracle, D.B. 2; Email Address: daniel.miracle@wpafb.af.mil; Affiliation: 1: Systran Federal, Inc., Dayton, OH 45433, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: May2003, Vol. 51 Issue 9, p2427; Subject Term: MICROSTRUCTURE; Subject Term: METALLIC composites; Subject Term: TITANIUM alloys; Subject Term: TESTING; Author-Supplied Keyword: Elastic behavior; Author-Supplied Keyword: Mechanical properties testing; Author-Supplied Keyword: Metal matrix composites; Author-Supplied Keyword: Powder consolidation; Author-Supplied Keyword: Titanium alloys; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 16p; Document Type: Article L3 - 10.1016/S1359-6454(02)00510-4 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9601039&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shaw, L. AU - Luo, H. AU - Villegas, J. AU - Miracle, D. T1 - Thermal stability of nanostructured Al93Fe3Cr2Ti2 alloys prepared via mechanical alloying JO - Acta Materialia JF - Acta Materialia Y1 - 2003/05/23/ VL - 51 IS - 9 M3 - Article SP - 2647 SN - 13596454 AB - Thermal stability of nanostructured Al93Fe3Ti2Cr2 alloys prepared via mechanical alloying (MA) starting from elemental powders was investigated using a variety of analytical techniques including modulated differential scanning calorimetry, X-ray diffraction, scanning electron microscopy, transmission electron microscopy coupled with energy dispersive spectrometry and microdiffraction. The results showed that the MA-processed Al93Fe3Ti2Cr2 alloy in the as-milled condition was composed of an Al-based supersaturated solid solution with high internal strains. Release of internal strains, intermetallic precipitation and grain growth occurred upon heating of the MA-processed Al alloy. Nevertheless, grain growth in the MA-processed Al alloy was very limited and fcc-Al grains with sizes in the range of 20 nm were still present in the alloys after exposure to 450 °C (0.77 Tm). [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MECHANICAL alloying KW - OPTICAL diffraction KW - ELECTRON microscopy KW - TRANSMISSION electron microscopy KW - SCANNING electron microscopy KW - Aluminum alloys KW - Grain growth KW - Mechanical alloying KW - Nanostructured materials N1 - Accession Number: 9601055; Shaw, L. 1; Email Address: lshaw@mail.ims.uconn.edu Luo, H. 1 Villegas, J. 1 Miracle, D. 2; Affiliation: 1: Department of Metallurgy and Materials Engineering, University of Connecticut, Storrs, CT 06269, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA; Source Info: May2003, Vol. 51 Issue 9, p2647; Subject Term: MECHANICAL alloying; Subject Term: OPTICAL diffraction; Subject Term: ELECTRON microscopy; Subject Term: TRANSMISSION electron microscopy; Subject Term: SCANNING electron microscopy; Author-Supplied Keyword: Aluminum alloys; Author-Supplied Keyword: Grain growth; Author-Supplied Keyword: Mechanical alloying; Author-Supplied Keyword: Nanostructured materials; Number of Pages: 17p; Document Type: Article L3 - 10.1016/S1359-6454(03)00075-2 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9601055&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alvin, K.F. AU - Robertson, A.N. AU - Reich, G.W. AU - Park, K.C. T1 - Structural system identification: from reality to models JO - Computers & Structures JF - Computers & Structures Y1 - 2003/05/15/ VL - 81 IS - 12 M3 - Article SP - 1149 SN - 00457949 AB - The paper is an expository contribution on the subject of structural system identification, measured signal processing and their applications to model-based structural health detection. The materials covered in this paper are by and large extracted from the three theses of the first three authors. The paper focuses on the state-space oriented system identification theory as specialized to structural dynamics governing equations of motion, a judicious use of wavelet transformation techniques for extracting impulse response functions, various input–output combinations for multi-input and multi-output problems, robust ways of identifying both proportional and non-proportional damping parameters, and the use of localized identification theory for damage detection from measured response data. The authors then offer several outstanding challenges in structural system identification theory and their applications. [Copyright &y& Elsevier] AB - Copyright of Computers & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRUCTURAL dynamics KW - WAVELETS (Mathematics) N1 - Accession Number: 9484657; Alvin, K.F. 1 Robertson, A.N. 2 Reich, G.W. 3 Park, K.C. 4; Email Address: kcpark@titan.colorado.edu; Affiliation: 1: Structural Dynamics Research, Sandia National Laboratories, Albuquerque, NM 87185, USA 2: Los Alamos National Laboratory, ESA-WR, MS P946, Los Alamos, NM 87545, USA 3: Air Force Research Laboratory, Air Vehicles Directorate, 2210 Eighth St., Room 219, WPAFB, OH 45433, USA 4: Department of Aerospace Engineering Sciences, Center for Aerospace Structures, University of Colorado, Campus Box 429, Boulder, CO 80309-0429, USA; Source Info: May2003, Vol. 81 Issue 12, p1149; Subject Term: STRUCTURAL dynamics; Subject Term: WAVELETS (Mathematics); Number of Pages: 28p; Document Type: Article L3 - 10.1016/S0045-7949(03)00034-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9484657&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rapoport, Amnon AU - Stein, William E. AU - Parco, James E. AU - Nicholas, Thomas E. T1 - Equilibrium play and adaptive learning in a three-person centipede game JO - Games & Economic Behavior JF - Games & Economic Behavior Y1 - 2003/05// VL - 43 IS - 2 M3 - Article SP - 239 SN - 08998256 AB - The two-person centipede game is one of the most celebrated paradoxes of backward induction in complete information extensive form games. An experimental investigation of a three-person centipede game shows that the paradoxical results are strongly affected by the size of the stakes. When the number of players in the game is increased from two to three and the game is played for unusually high stakes with group composition being randomly changed from trial to trial, the paradox is considerably weakened as players approach equilibrium play with multiple iterations of the stage game. When the game is played with low stakes, there is no evidence for equilibrium play or learning across iterations of the stage game. An adaptive learning model that assumes updating of the individual probabilities of choice outperforms alternative static and dynamic models in accounting for the major results observed in the high-stake experiment. [Copyright &y& Elsevier] AB - Copyright of Games & Economic Behavior is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GAMES KW - EQUILIBRIUM (Economics) KW - Adaptive learning KW - Backward induction KW - Centipede game KW - Experimental study KW - High vs. low stakes N1 - Accession Number: 9567139; Rapoport, Amnon 1; Email Address: amnon@u.arizona.edu Stein, William E. 2 Parco, James E. 3 Nicholas, Thomas E. 1; Affiliation: 1: Department of Management and Policy, University of Arizona, 405 McClelland Hall, Tucson, AZ 85721, USA 2: Department of Information and Operations Management, Texas A&M University, College Station, TX 77843, USA 3: Department of Management, United States Air Force Academy, Colorado Springs, CO 80840, USA; Source Info: May2003, Vol. 43 Issue 2, p239; Subject Term: GAMES; Subject Term: EQUILIBRIUM (Economics); Author-Supplied Keyword: Adaptive learning; Author-Supplied Keyword: Backward induction; Author-Supplied Keyword: Centipede game; Author-Supplied Keyword: Experimental study; Author-Supplied Keyword: High vs. low stakes; NAICS/Industry Codes: 451120 Hobby, Toy, and Game Stores; NAICS/Industry Codes: 423920 Toy and Hobby Goods and Supplies Merchant Wholesalers; NAICS/Industry Codes: 339930 Doll, Toy, and Game Manufacturing; Number of Pages: 27p; Document Type: Article L3 - 10.1016/S0899-8256(03)00009-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9567139&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Riehl, Bonnie AU - Subramanyam, Guru AU - Biggers, Rand AU - Campbell, Angela AU - Van Keuls, Fred W. AU - Miranda, Felix A. AU - Tomlin, David T1 - Synthesis and Characterization of Nanostructured BSTO Thin-Films for Microwave Applications. JO - Integrated Ferroelectrics JF - Integrated Ferroelectrics Y1 - 2003/05// VL - 55 IS - 1 M3 - Article SP - 825 EP - 837 SN - 10584587 AB - Nanophase synthesis of ferroelectric thin-films of Ba 0.6 Sr 0.4 TiO 3 (BSTO) was studied systematically for applications in tunable microwave components. Synthesis of nanostructured BSTO was performed using a pulsed-laser deposition system with real-time in-situ process control. The main research goal was to utilize the pulsed laser deposition parameters to control the grain growth for low microwave loss nanostructured BSTO thin-films on crystalline substrates such as LaAlO 3 . These parameters include the energy density of the laser pulses, wavelength, oxygen partial pressure, distance between the target and the substrate, and the substrate temperature. The nanostructural characterization was performed using XRD, SEM and AFM. Microwave characterization was done using coplanar waveguide lines to characterize the frequency dependent dielectric properties (ℇ r and tan δ). BSTO films were grown at the same measured temperature and energy density but in different oxygen ambient pressures from 19 mTorr through 300 mTorr. Using contact mode AFM, the grain size was found to decrease as the oxygen ambient pressure was reduced from 150 mTorr to 38 mTorr. The growth process changed when the pressure was increased above 150 mTorr. Nanocluster structures rather than nanoparticles were found at 225 mTorr. Average grain sizes less than 100 nm were obtained to oxygen pressures below 75 mTorr. The XRD spectra indicate the highly crystalline nature of the film. Microwave measurements, performed between 9-18 GHz, suggest the nano-structured BSTO thin-films on LaAlO 3 (LAO) substrates are highly tunable (up to 25%). [ABSTRACT FROM AUTHOR] AB - Copyright of Integrated Ferroelectrics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - MICROWAVES KW - PULSED laser deposition KW - ELECTRIC apparatus & appliances KW - COATING processes KW - FERROELECTRICITY KW - BSTO thin-films KW - Ferroelectrics KW - nanostructured thin-films KW - PLD KW - tunable microwave devices N1 - Accession Number: 11794723; Riehl, Bonnie 1 Subramanyam, Guru 1 Biggers, Rand 2 Campbell, Angela 2 Van Keuls, Fred W. 3 Miranda, Felix A. 3 Tomlin, David 4; Affiliation: 1: Dept. of ECE, University of Dayton, Dayton, OH 45469. 2: Air Force Research Laboratory, WPAFB, OH 45433. 3: NASA Glenn Research Center, Cleveland, OH 44135. 4: Technical Management Concepts Inc., Dayton, OH.; Source Info: 2003, Vol. 55 Issue 1, p825; Subject Term: THIN films; Subject Term: MICROWAVES; Subject Term: PULSED laser deposition; Subject Term: ELECTRIC apparatus & appliances; Subject Term: COATING processes; Subject Term: FERROELECTRICITY; Author-Supplied Keyword: BSTO thin-films; Author-Supplied Keyword: Ferroelectrics; Author-Supplied Keyword: nanostructured thin-films; Author-Supplied Keyword: PLD; Author-Supplied Keyword: tunable microwave devices; NAICS/Industry Codes: 332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers; NAICS/Industry Codes: 238210 Electrical Contractors and Other Wiring Installation Contractors; NAICS/Industry Codes: 335990 All other electrical equipment and component manufacturing; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 811412 Appliance Repair and Maintenance; NAICS/Industry Codes: 416110 Electrical wiring and construction supplies merchant wholesalers; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11794723&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miracle, D.B. AU - Senkov, O.N. T1 - A geometric model for atomic configurations in amorphous Al alloys JO - Journal of Non-Crystalline Solids JF - Journal of Non-Crystalline Solids Y1 - 2003/05// VL - 319 IS - 1/2 M3 - Article SP - 174 SN - 00223093 AB - A representative model for the atomic structure of amorphous Al alloys is proposed based on the fundamental structure-forming principle of high packing efficiency, topological concepts, and available partial and total radial distribution functions from diffraction studies. Selection of rare earth (RE)-centered atomic clusters as representative structural elements in this model is supported by the large coordination number (∼17±2), efficient atomic packing (100±5%), and small mean intersolute spacing (∼2 atom diameters center-to-center) associated with RE solutes in amorphous Al alloys. Using Al–Y and Al–Y–Ni alloys as a base, five idealized Y-centered clusters and two Ni-centered clusters are described with specific atomic configurations that are consistent with the observed coordination numbers and high density relative to crystalline alloys of the same composition. Significant configurational complexity, required for an amorphous structure, is offered by this structural model. A distribution in Y–Y intersolute spacing is provided by the model that is consistent with the expectation of a random distribution of Y atoms. Topological similarities with other amorphous metal alloy systems suggest that the structure described here for amorphous Al may also be relevant for many other amorphous metals with marginal glass-forming ability (critical cooling rate⩾1000 K/s), including alloys based on Mg, Fe, Ni and Co. [Copyright &y& Elsevier] AB - Copyright of Journal of Non-Crystalline Solids is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM alloys KW - ATOMIC structure KW - MICROCLUSTERS KW - AMORPHOUS substances N1 - Accession Number: 9403614; Miracle, D.B. 1; Email Address: daniel.miracle@wpafb.af.mil Senkov, O.N. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Dayton, OH 45433-7817, USA 2: UES, Inc., Dayton, OH 45432-1894, USA; Source Info: May2003, Vol. 319 Issue 1/2, p174; Subject Term: ALUMINUM alloys; Subject Term: ATOMIC structure; Subject Term: MICROCLUSTERS; Subject Term: AMORPHOUS substances; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; Number of Pages: 18p; Document Type: Article L3 - 10.1016/S0022-3093(02)01917-8 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9403614&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sun, G. AU - Soref, Richard A. T1 - Si-based quantum staircase terahertz lasers JO - Microelectronics Journal JF - Microelectronics Journal Y1 - 2003/05// VL - 34 IS - 5-8 M3 - Article SP - 391 SN - 00262692 AB - Design results are presented for electrically pumped quantum staircase intersubband p-i-p SiGe/Si strain-balanced superlattice lasers to be operated at 77 K or higher. The wavelength of laser emission will be in the THz range. Two approaches of quantum staircase lasers will be presented, one utilizes the inverted light-hole effective mass, while the other inverted heavy-hole mass. Optical gain on the order of a few 100 cm−1 can be achieved for both laser designs. [Copyright &y& Elsevier] AB - Copyright of Microelectronics Journal is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM wells KW - LASERS KW - Quantum staircase laser KW - SiGe/Si strain balanced superlattice KW - THz laser N1 - Accession Number: 9951073; Sun, G. 1; Email Address: greg.sun@umb.edu Soref, Richard A. 2; Affiliation: 1: Department of Physics, University of Massachusetts at Boston, Boston, MA 02125, USA 2: Air Force Research Laboratory, Sensors Directorate, Hanscom Air Force Base, MA 01731, USA; Source Info: May2003, Vol. 34 Issue 5-8, p391; Subject Term: QUANTUM wells; Subject Term: LASERS; Author-Supplied Keyword: Quantum staircase laser; Author-Supplied Keyword: SiGe/Si strain balanced superlattice; Author-Supplied Keyword: THz laser; Number of Pages: 3p; Document Type: Article L3 - 10.1016/S0026-2692(03)00032-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9951073&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Miracle, D.B. AU - Senkov, O.N. T1 - Topological criterion for metallic glass formation JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2003/04/25/ VL - 347 IS - 1/2 M3 - Article SP - 50 SN - 09215093 AB - A topological model is proposed for metallic glass formation through destabilization of the host crystalline lattice by substitutional and/or interstitial solute elements. A solute element may partition between substitutional and interstitial sites and the model calculates relative site frequency as a function of the strain energy associated with each site. The strain energy, in turn, depends upon solute and solvent elastic properties and relative sizes, and upon temperature. The crystalline lattice is destabilized leading to amorphization when solute elements produce a critical internal strain required to change local coordination numbers. Fractions of solute atoms in interstitial and substitutional sites and the internal strain introduced by these atoms are calculated as functions of atomic radii and elastic moduli of solvent and solute elements and the absolute temperature. The critical concentration of a solute element required to destabilize the crystalline lattice of a binary alloy is also calculated as a function of the radius ratio R=RB/RA of the solute and solvent elements. In the range of 0.5ν=2→0) transitions. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUORINE KW - LASERS N1 - Accession Number: 9232131; Wisniewski, Charles F. 1 Hewett, Kevin B. 1; Email Address: kevin.hewett@kirtland.af.mil Manke II, Gerald C. 1 Randall Truman, C. 2 Hager, Gordon D. 1; Affiliation: 1: Air Force Research Laboratory, Directed Energy Directorate, 3550 Aberdeen Avenue SE, Kirtland AFB, NM 87117-5776, USA 2: Department of Mechanical Engineering, University of New Mexico, USA; Source Info: Mar2003, Vol. 370 Issue 5/6, p591; Subject Term: FLUORINE; Subject Term: LASERS; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 6p; Document Type: Article L3 - 10.1016/S0009-2614(03)00109-X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9232131&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Peterson, Dale T1 - Gridline graphs: a review in two dimensions and an extension to higher dimensions JO - Discrete Applied Mathematics JF - Discrete Applied Mathematics Y1 - 2003/03/15/ VL - 126 IS - 2/3 M3 - Article SP - 223 SN - 0166218X AB - Gridline graphs can be realized in the plane with vertices adjacent whenever they are on a common vertical or horizontal line. We review some applications and characterizations, e.g. they are line graphs of bipartite graphs, and provide practical O(|V|3) algorithms for some classical problems. We extend gridline graphs from the plane to higher dimensions. We characterize these graphs using a vertex coloring of the clique graph that corresponds to the conditions that, in the intersection graph of lines parallel to axes in Rn, any cycle of four lines must remain in two dimensions and any path between two given lines must traverse the same two dimensions. [Copyright &y& Elsevier] AB - Copyright of Discrete Applied Mathematics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAPH theory KW - BIPARTITE graphs KW - Adjacency graph KW - Checked graph KW - Clique graph KW - Graph of a (0–1)-matrix KW - Gridline graph KW - Line graph of a bipartite graph KW - Perfect graph N1 - Accession Number: 7911520; Peterson, Dale 1; Email Address: dale.peterson@usafa.af.mil; Affiliation: 1: Department of Mathematical Sciences, United States Air Force Academy, HQ USAFA/DFMS, 2354 Fairchild Drive, Suite 6D2A, USAF Academy, CO 80840-6252, USA; Source Info: Mar2003, Vol. 126 Issue 2/3, p223; Subject Term: GRAPH theory; Subject Term: BIPARTITE graphs; Author-Supplied Keyword: Adjacency graph; Author-Supplied Keyword: Checked graph; Author-Supplied Keyword: Clique graph; Author-Supplied Keyword: Graph of a (0–1)-matrix; Author-Supplied Keyword: Gridline graph; Author-Supplied Keyword: Line graph of a bipartite graph; Author-Supplied Keyword: Perfect graph; Number of Pages: 17p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7911520&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Evans, D.R. AU - Saleh, M.A. AU - Allen, A.S. AU - Pottenger, T.P. AU - Bunning, T.J. AU - Guha, S. AU - Basun, S.A. T1 - Elimination of Photovoltaic Induced Instabilities and the Theoretical Evaluation of Material Parameters in Iron-Doped Lithium Niobate Using Contra-Directional Two-Beam Coupling. JO - Ferroelectrics JF - Ferroelectrics Y1 - 2003/03/15/ VL - 285 IS - 1 M3 - Article SP - 303 SN - 00150193 AB - Two-beam coupling efficiencies are measured experimentally using a contra-directional single incident beam geometry. These results are compared to a theoretical model, which takes into account the presence of dark conductivity. The experimental results were obtained from a crystal where grating-writing instabilities were eliminated. The source of the instabilities and their elimination are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Ferroelectrics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALS KW - ELECTRIC conductivity KW - PARTICLE beam instabilities KW - RESEARCH KW - contra-directional two-beam coupling KW - coupling theory KW - dark conductivity KW - gain coefficient KW - instabilities KW - Lithium niobate KW - photorefractive noise N1 - Accession Number: 10838144; Evans, D.R. 1 Saleh, M.A. 1 Allen, A.S. 2 Pottenger, T.P. 3 Bunning, T.J. 3 Guha, S. 3 Basun, S.A. 4; Affiliation: 1: Technical Management Concepts Inc. 2: Southern Ohio Council for Higher Education. 3: Air Force Research Laboratory, 3005 P. St., Bldg. 651 Suite 1, WPAFB, OH 45433, USA. 4: A. F loffe Physico-Technical Institute Polytechnicheskaya 26, 194021 St. Petersburg, Russia.; Source Info: 2003, Vol. 285 Issue 1, p303; Subject Term: CRYSTALS; Subject Term: ELECTRIC conductivity; Subject Term: PARTICLE beam instabilities; Subject Term: RESEARCH; Author-Supplied Keyword: contra-directional two-beam coupling; Author-Supplied Keyword: coupling theory; Author-Supplied Keyword: dark conductivity; Author-Supplied Keyword: gain coefficient; Author-Supplied Keyword: instabilities; Author-Supplied Keyword: Lithium niobate; Author-Supplied Keyword: photorefractive noise; Number of Pages: 8p; Document Type: Article L3 - 10.1080/0015O190390206149 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10838144&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Sentman, D.D. AU - Wescott, E.M. AU - Picard, R.H. AU - Winick, J.R. AU - Stenbaek-Nielsen, H.C. AU - Dewan, E.M. AU - Moudry, D.R. AU - São Sabbas, F.T. AU - Heavner, M.J. AU - Morrill, J. T1 - Simultaneous observations of mesospheric gravity waves and sprites generated by a midwestern thunderstorm JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2003/03/15/ VL - 65 IS - 5 M3 - Article SP - 537 SN - 13646826 AB - The present report investigates using simultaneous observations of coincident gravity waves and sprites to establish an upper limit on sprite-associated thermal energy deposition in the mesosphere. The University of Alaska operated a variety of optical imagers and photometers at two ground sites in support of the NASA Sprites99 balloon campaign. One site was atop a US Forest Service lookout tower on Bear Mt. in the Black Hills, in western South Dakota. On the night of 18 August 1999 we obtained from this site simultaneous images of sprites and OH airglow modulated by gravity waves emanating from a very active sprite producing thunderstorm over Nebraska, to the Southeast of Bear Mt. Using 25 s exposures with a bare CCD camera equipped with a red filter, we were able to coincidentally record both short duration (<10 ms) but bright (>3 MR) N2 1PG red emissions from sprites and much weaker (∼1 kR), but persistent, OH Meinel nightglow emissions. A time lapse movie created from images revealed short period, complete 360° concentric wave structures emanating radially outward from a central excitation region directly above the storm. During the initial stages of the storm outwardly expanding waves possessed a period of τ≈10 min and wavelength λ≈50 km. Over a 1 h interval the waves gradually changed to longer period τ≈11 min and shorter wavelength λ≈40 km. Over the full 2 h observation time, about two dozen bright sprites generated by the underlying thunderstorm were recorded near the center of the outwardly radiating gravity wave pattern. No distinctive OH brightness signatures uniquely associated with the sprites were detected at the level of 2% of the ambient background brightness, establishing an associated upper limit of approximately ΔT≲0.5 K for a neutral temperature perturbation over the volume of the sprites. The corresponding total thermal energy deposited by the sprite is bounded by these measurements to be less than ∼1 GJ. This value is well above the total energy deposited into the medium by the sprite, estimated by several independent methods to be on the order of ∼1–10 MJ. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GRAVITY waves KW - HEAT storage KW - Gravity waves KW - Lightning KW - Sprites N1 - Accession Number: 9573183; Sentman, D.D. 1; Email Address: dsentman@gi.alaska.edu Wescott, E.M. 1 Picard, R.H. 2 Winick, J.R. 2 Stenbaek-Nielsen, H.C. 2 Dewan, E.M. 2 Moudry, D.R. 1 São Sabbas, F.T. 1 Heavner, M.J. 3 Morrill, J. 4; Affiliation: 1: University of Alaska, Geophysical Institute, Fairbanks, AK 99775, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA, USA 3: Los Alamos National Laboratory, NIS-1, Los Alamos, NM, USA 4: Naval Research Laboratory, E.O. Hulburt Center for Space Research, Washington, DC, USA; Source Info: Mar2003, Vol. 65 Issue 5, p537; Subject Term: GRAVITY waves; Subject Term: HEAT storage; Author-Supplied Keyword: Gravity waves; Author-Supplied Keyword: Lightning; Author-Supplied Keyword: Sprites; Number of Pages: 14p; Document Type: Article L3 - 10.1016/S1364-6826(02)00328-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9573183&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bliss, D.F. AU - Tassev, V.L. AU - Weyburne, D. AU - Bailey, J.S. T1 - Aluminum nitride substrate growth by halide vapor transport epitaxy JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2003/03/15/ VL - 250 IS - 1/2 M3 - Article SP - 1 SN - 00220248 AB - High-quality AlN layers with thickness up to 50 μm have been grown by HVTE at growth rates up to 60 μm/h at deposition temperatures of 1000–1100°C in the pressure range of 50–760 Torr. The HVT process uses an aluminum chloride amine adduct as the aluminum source and ammonia for the nitrogen. This new technique eliminates the main difficulties of the conventional HVPE growth, where aluminum oxidation and the strong reactivity of aluminum chloride with quartz create the potential for oxygen contamination. The crystalline layer quality as determined by X-ray rocking curve measurement shows FWHM of 300–900 and 500–1300 arcsec for (0 0 2) and (1 0 2) planes, respectively. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPITAXY KW - NITRIDES KW - A3. Halide vapor phase epitaxy KW - B1. Nitrides N1 - Accession Number: 9281631; Bliss, D.F. 1; Email Address: david.bliss@hanscom.af.mil Tassev, V.L. 2 Weyburne, D. 1 Bailey, J.S. 2; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, 80 Scott Road, Hanscom AFB, MA 01731 USA 2: Solid State Scientific Corporation, Hollis, NH 03049 USA; Source Info: Mar2003, Vol. 250 Issue 1/2, p1; Subject Term: EPITAXY; Subject Term: NITRIDES; Author-Supplied Keyword: A3. Halide vapor phase epitaxy; Author-Supplied Keyword: B1. Nitrides; Number of Pages: 6p; Document Type: Article L3 - 10.1016/S0022-0248(02)02179-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9281631&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morton, Joseph L. AU - Ma, Nancy AU - Bliss, David F. AU - Bryant, George G. T1 - Magnetic field effects during liquid-encapsulated Czochralski growth of doped photonic semiconductor crystals JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2003/03/15/ VL - 250 IS - 1/2 M3 - Article SP - 174 SN - 00220248 AB - During the liquid-encapsulated Czochralski (LEC) process, a single compound semiconductor crystal such as indium phosphide or gallium antimonide is grown by the solidification of an initially molten semiconductor contained in a crucible. The motion of the electrically conducting molten semiconductor can be controlled with an externally applied magnetic field. This paper presents a model for the unsteady transport of a dopant during the LEC process with a steady axial magnetic field. The convective species transport during growth produces significant segregation in both the melt and the crystal. Dopant distributions in the crystal and in the melt at several different stages during growth are presented. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MASS transfer KW - MAGNETIC fields KW - A1. Magnetic fields KW - A1. Mass transfer KW - A1. Segregation KW - A2. Growth from melt KW - A2. Liquid encapsulated Czochralski method KW - A2. Magnetic field assisted Czochralski method KW - B2. Semiconducting III–V compounds N1 - Accession Number: 9281620; Morton, Joseph L. 1 Ma, Nancy 2; Email Address: nancy_ma@ncsu.edu Bliss, David F. 3 Bryant, George G. 3; Affiliation: 1: Department of Mechanical and Aerospace Engineering and Engineering Mechanics, University of Missouri, 1870 Miner Circle, Rolla, MO 65409, USA 2: Department of Mechanical and Aerospace Engineering, North Carolina State University, Campus Box 7910, Raleigh, NC 27695, USA 3: US Air Force Research Laboratory, Sensors Directorate, AFRL/SNHC, 80 Scott Road, Hanscom AFB, MA 01731, USA; Source Info: Mar2003, Vol. 250 Issue 1/2, p174; Subject Term: MASS transfer; Subject Term: MAGNETIC fields; Author-Supplied Keyword: A1. Magnetic fields; Author-Supplied Keyword: A1. Mass transfer; Author-Supplied Keyword: A1. Segregation; Author-Supplied Keyword: A2. Growth from melt; Author-Supplied Keyword: A2. Liquid encapsulated Czochralski method; Author-Supplied Keyword: A2. Magnetic field assisted Czochralski method; Author-Supplied Keyword: B2. Semiconducting III–V compounds; Number of Pages: 9p; Document Type: Article L3 - 10.1016/S0022-0248(02)02261-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9281620&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kim, J.H. AU - Shin, D.H. AU - Semiatin, S.L. AU - Lee, C.S. T1 - High temperature deformation behavior of a γ TiAl alloy determined using the load-relaxation test JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2003/03/15/ VL - 344 IS - 1/2 M3 - Article SP - 146 SN - 09215093 AB - The high temperature deformation behavior of a two-phase γ TiAl alloy was investigated as a function of temperature and γ/α2 volume fraction. For this purpose, load-relaxation and tension tests were conducted at temperatures ranging from 800 to 1050 °C. When a small amount of deformation was imposed (ϵ≈0.04), the experimental stress-versus-strain-rate data for the fine-grained TiAl alloy were well fit by predictions based on grain-matrix deformation and dislocation climb derived from the inelastic deformation theory. Evidence of grain-boundary sliding was not observed in this instance. However, after a large amount of pre-deformation (ϵ≈0.8), the constitutive behavior changed significantly, indicating that grain-boundary sliding was also operating, an effect attributable to the occurrence of dynamic recrystallization during the deformation. With an increase in the volume fraction of the α2 phase, the flow stress for grain-matrix deformation was not varied, but that of dislocation climb decreased significantly. It was also found that the γ/α2 boundaries were more susceptible to cavity initiation than the γ/γ boundaries. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - DEFORMATIONS (Mechanics) KW - MICROMECHANICS KW - Cavitation KW - Deformation KW - Dislocation climb KW - Dynamic recrystallization KW - Gamma-TiAl N1 - Accession Number: 8668162; Kim, J.H. 1 Shin, D.H. 2 Semiatin, S.L. 3 Lee, C.S. 1; Email Address: cslee@postech.ac.kr; Affiliation: 1: Department of Materials Science and Engineering, Center for Advanced Aerospace Materials, Pohang University of Science and Technology, San 31, Hyoja-dong, Pohang 790-784, South Korea 2: Hanyang University, Ansan, Kyunggi-Do 425-791, South Korea 3: Air Force Research Laboratory, AFRL/MLLMP, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Mar2003, Vol. 344 Issue 1/2, p146; Subject Term: TITANIUM alloys; Subject Term: DEFORMATIONS (Mechanics); Subject Term: MICROMECHANICS; Author-Supplied Keyword: Cavitation; Author-Supplied Keyword: Deformation; Author-Supplied Keyword: Dislocation climb; Author-Supplied Keyword: Dynamic recrystallization; Author-Supplied Keyword: Gamma-TiAl; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8668162&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhang, X.D. AU - Evans, D.J. AU - Baeslack III, W.A. AU - Fraser, H.L. T1 - Effect of long term aging on the microstructural stability and mechanical properties of Ti–6Al–2Cr–2Mo–2Sn–2Zr alloy JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2003/03/15/ VL - 344 IS - 1/2 M3 - Article SP - 300 SN - 09215093 AB - Microstructural development after long term aging and its effect on the mechanical properties have been investigated in Ti–6Al–2Cr–2Mo–2Sn–2Zr alloy. Four types of precipitates have been identified in the alloy, they are α2-Ti3Al, ω, silicides and α-TiCr2 Laves phase. α2-Ti3Al and ω are observed in the as-received materials and all aged samples. Silicides, (Ti, Zr)xSi3 (5≤x≤6), are found in the specimens aged at 550–650 °C over 500 h. The silicides have a hexagonal structure with a lattice parameter: a=7.01±0.03, c=3.63±0.06 A˚. The orientation relation between the silicides and the parent β-phase has been determined as: [111]β//[0001]silicide, (101)β//(1100)silicide. Laves phase α-(Ti, Zr)Cr2 is observed in the samples aged at 450–550 °C over 500 h. It has a cubic structure (a=7.12±0.03 A˚) with an orientation relationship with the α- and β-Ti matrix: [110]α-TiCr2//[0001]α-Ti//[110]β-Ti, (1¯13)α-TiCr2//(1¯100)α-Ti//(1¯10)β-Ti. Long term aging in the temperature range of 450–550 °C results in significant decrease of fracture toughness and increase of intergranular failure, due to precipitation of α2-Ti3Al and α-(Ti, Zr)Cr2 Laves phase. No considerable change in fracture toughness for the samples aged at 650 °C up to 1000 h is found in spite of precipitation of the α2-Ti3Al and the silicides. The retention of fracture toughness after aging at these temperatures has been attributed to coarsening of secondary α-Ti platelets during the aging treatment. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALLOYS KW - MICROSTRUCTURE KW - MICROMECHANICS KW - Intermetallic KW - Microstructure KW - Nucleation/growth KW - Optical microscopy KW - Titanium N1 - Accession Number: 8668180; Zhang, X.D. 1; Email Address: zhangxd@agere.com Evans, D.J. 2 Baeslack III, W.A. 1 Fraser, H.L. 1; Affiliation: 1: The Ohio State University, 2041 College Road, Columbus, OH 43210, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH 45433, USA; Source Info: Mar2003, Vol. 344 Issue 1/2, p300; Subject Term: ALLOYS; Subject Term: MICROSTRUCTURE; Subject Term: MICROMECHANICS; Author-Supplied Keyword: Intermetallic; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Nucleation/growth; Author-Supplied Keyword: Optical microscopy; Author-Supplied Keyword: Titanium; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8668180&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Atwell, Andrew R. AU - Okojie, Robert S. AU - Kornegay, Kevin T. AU - Roberson, Scott L. AU - Beliveau, Alain T1 - Simulation, fabrication and testing of bulk micromachined 6H-SiC high-g piezoresistive accelerometers JO - Sensors & Actuators A: Physical JF - Sensors & Actuators A: Physical Y1 - 2003/03/15/ VL - 104 IS - 1 M3 - Article SP - 11 SN - 09244247 AB - We report the utilization of key design parameters to simulate, batch-fabricate and evaluate first-generation single crystal 6H-SiC piezoresistive accelerometers for extreme impact applications. High-g simulation results predicted safe operation above 100,000×g and preliminary experimental tests were successfully performed to 40,000×g. Sensitivities ranging between 50 and 343 nV/g were measured for differing accelerometer sensing elements. Non-linear behavior was observed over the shock range relative to the commercial benchmark accelerometer. These initial results offer promise for the use of 6H-SiC accelerometers in extreme impact sensing. [Copyright &y& Elsevier] AB - Copyright of Sensors & Actuators A: Physical is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILICON carbide KW - ACCELEROMETERS KW - Accelerometer KW - MEMS KW - Piezoresistivity KW - Shock testing KW - Silicon carbide N1 - Accession Number: 9098878; Atwell, Andrew R. 1; Email Address: aatwell@ida.org Okojie, Robert S. 1 Kornegay, Kevin T. 2 Roberson, Scott L. 3 Beliveau, Alain 4; Affiliation: 1: Instrumentation Controls Division, NASA-Glenn Research Center, Cleveland, OH 44135, USA 2: School of Electrical and Computer Engineering, Cornell University, Ithaca, NY 14853, USA 3: Air Force Research Laboratory (AFRL), Munitions Directorate, AFRL/MNMF, Fuzes Branch, Eglin AFB, FL 32542, USA 4: Applied Research Associates, 2004 Lewis Turner Blvd., Union Station Suite C, Fort Walton Beach, FL 32547, USA; Source Info: Mar2003, Vol. 104 Issue 1, p11; Subject Term: SILICON carbide; Subject Term: ACCELEROMETERS; Author-Supplied Keyword: Accelerometer; Author-Supplied Keyword: MEMS; Author-Supplied Keyword: Piezoresistivity; Author-Supplied Keyword: Shock testing; Author-Supplied Keyword: Silicon carbide; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9098878&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hartley, C.S. T1 - Single crystal elastic moduli of disordered cubic alloys JO - Acta Materialia JF - Acta Materialia Y1 - 2003/03/14/ VL - 51 IS - 5 M3 - Article SP - 1373 SN - 13596454 AB - A computationally efficient, physics-based technique is described for calculating the composition dependence of single crystal elastic constants of disordered, single-phase alloys with face-centered cubic and body-centered cubic Bravais lattices. Alloys are modeled as virtual crystals in which the energy of representative atom pairs is approximated by a virtual potential constructed from the pair potentials of component pairs using a quasi-chemical approximation. Following the method of long waves, second-order elastic constants are calculated from first and second neighbor axisymmetric force constants obtained from the virtual potential. Since only elastic constants are modeled, the form of the potential employed contains only parameters that describe the slope and curvature in the vicinity of the first and second nearest neighbors. Examples are presented for several binary alloy systems differing in solubility characteristics and crystal structures of the pure solutes. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTALS KW - ELASTICITY KW - ALLOYS KW - LATTICE dynamics KW - Alloy KW - Elastic constants KW - Single crystal N1 - Accession Number: 9189391; Hartley, C.S. 1; Email Address: craig.hartley@afosr.af.mil; Affiliation: 1: Air Force Research Laboratory, Air Force Office of Scientific Research, Arlington, VA 22203, USA; Source Info: Mar2003, Vol. 51 Issue 5, p1373; Subject Term: CRYSTALS; Subject Term: ELASTICITY; Subject Term: ALLOYS; Subject Term: LATTICE dynamics; Author-Supplied Keyword: Alloy; Author-Supplied Keyword: Elastic constants; Author-Supplied Keyword: Single crystal; Number of Pages: 19p; Document Type: Article L3 - 10.1016/S1359-6454(02)00531-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9189391&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - G. P. Das AU - A. T. Yeates AU - D. S. Dudis T1 - Ab initio fragment orbital-based theory (This article is a US Government work and, as such, is in the public domain in the United States of America.). JO - International Journal of Quantum Chemistry JF - International Journal of Quantum Chemistry Y1 - 2003/03/11/ VL - 92 IS - 1 M3 - Article SP - 22 EP - 28 SN - 00207608 AB - A new formulation of ab initio theory is presented that treats a large molecule in terms of wave functions of its constituent molecular subunits (to be called fragments). The method aims to achieve near conventional ab initio accuracy but using a truncated set of fragment orbitals with a consequent drastic reduction of computing time and storage requirement. Illustrative calculations are presented for the molecule amino-nitro-stilbene. © 2003 Wiley Periodicals, Inc. Int J Quantum Chem, 2003 [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Quantum Chemistry is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 19871072; G. P. Das 1 A. T. Yeates 1 D. S. Dudis 1; Affiliation: 1: Air Force Research Laboratory, Materials Division, WPAFB, OH 45433; Source Info: 2003, Vol. 92 Issue 1, p22; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=19871072&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Barker, James R. T1 - The Real World of Employee Ownership (Book). JO - American Journal of Sociology JF - American Journal of Sociology Y1 - 2003/03// VL - 108 IS - 5 M3 - Book Review SP - 1122 EP - 1123 SN - 00029602 AB - Reviews the book "The Real World of Employee Ownership," by John Logue and Jacquelyn Yates. KW - EMPLOYEE ownership KW - NONFICTION KW - LOGUE, John KW - YATES, Jacquelyn KW - REAL World of Employee Ownership, The (Book) N1 - Accession Number: 10883691; Barker, James R. 1; Affiliation: 1: United States Air Force Academy; Source Info: Mar2003, Vol. 108 Issue 5, p1122; Subject Term: EMPLOYEE ownership; Subject Term: NONFICTION; Reviews & Products: REAL World of Employee Ownership, The (Book); People: LOGUE, John; People: YATES, Jacquelyn; Number of Pages: 2p; Document Type: Book Review; Full Text Word Count: 845 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10883691&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mastroianni, George R. AU - Chuba, Donna M. AU - Zupan, Michael O. T1 - Self-pacing and cognitive performance while walking JO - Applied Ergonomics JF - Applied Ergonomics Y1 - 2003/03// VL - 34 IS - 2 M3 - Article SP - 131 SN - 00036870 AB - Ten hikers completed a 4 km hike on hilly terrain three times: once self-paced without load, once self-paced with a backpack load of 10% body weight, and once externally paced with a backpack load of 10% body weight. Subjects performed mental arithmetic tasks and provided ratings of perceived exertion while walking. No differences in speed or accuracy of performance of mental arithmetic problems were observed. A battery of cognitive and physical tests was performed prior to walking and after each of the three walks. Significant differences between pre-walk baselines and post-walk tests were found only for the pattern-matching task. Subjects altered their pace in response to the addition of the backpack load, and altered their speed on downhill terrain in response to external pacing. Ratings of perceived exertion were found to correlate relatively well (r=0.80) with heart rate, but consistently underestimated actual heart rate. Underestimation was much greater for downhill than for uphill terrain. Underestimation of heart rate by rating of perceived exertion was least when subjects carried an external load of 10% body weight. [Copyright &y& Elsevier] AB - Copyright of Applied Ergonomics is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BODY weight KW - MENTAL arithmetic N1 - Accession Number: 9231127; Mastroianni, George R.; Email Address: george.mastroianni@usafa.af.mil Chuba, Donna M. 1 Zupan, Michael O. 1; Affiliation: 1: HQ USAFA/DFBL, 2354 Fairchild Drive Suite 5L52, United States Air Force Academy, CO 80840, USA; Source Info: Mar2003, Vol. 34 Issue 2, p131; Subject Term: BODY weight; Subject Term: MENTAL arithmetic; Number of Pages: 9p; Document Type: Article L3 - 10.1016/S0003-6870(03)00008-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9231127&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kattaa, V.R. AU - Meyer, T.R. AU - Gord, J.R. AU - Roquemore, W.M. T1 - Insights into non-adiabatic-equilibrium flame temperatures during millimeter-size vortex/flame interactions JO - Combustion & Flame JF - Combustion & Flame Y1 - 2003/03// VL - 132 IS - 4 M3 - Article SP - 639 SN - 00102180 AB - Previous experimental and numerical studies have demonstrated that local flame temperatures can significantly increase above or decrease below the adiabatic-equilibrium flame temperature during millimeter-size vortex/flame interactions. Such large excursions in temperature are not observed in centimeter-size vortex/flame interactions. To identify the physical mechanisms responsible for these super- or sub-adiabatic-equilibrium flame temperatures, numerical studies have been conducted for millimeter-size vortex/flame interactions in a hydrogen-air, opposing-jet diffusion flame. Contrary to expectations, preferential diffusion between H2 and O2 and geometrical curvature are not responsible for these variations in local flame temperature. This was demonstrated through simulations made by forcing the diffusion coefficients of H2 and O2 to be equal and thereby eliminating preferential diffusion. Propagation of flame into small (∼1 mm) vortices suggested that the amount of reactant carried by such a small vortex is not sufficient to feed the flame with fresh reactant during the entire vortex/flame interaction process. Various numerical experiments showed that the reactant-limiting characteristics associated with the millimeter-size vortices and the local Lewis number (not preferential diffusion) are responsible for the generation of flame temperature that is different from the adiabatic-equilibrium value. The reactant-deficient nature of the millimeter-size vortices forces the combustion products to be entrained into the vortex. While a greater-than-unity Lewis number results in pre-heating of the reactant through the product entrainment, a less-than-unity Lewis number causes cooling of the reactant. Contrary to this behavior, a centimeter-size large vortex wraps and maintains the flame around its outer perimeter by feeding the flame with fresh reactant throughout the interaction process, thereby rendering the flame unaffected by the Lewis number. Since turbulent flames generally involve interactions with small-size vortices, the physical mechanisms described here should be considered when developing mathematical models for turbulent flames. [Copyright &y& Elsevier] AB - Copyright of Combustion & Flame is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIFFUSION KW - FLUID dynamics KW - Diffusion flames KW - Non-adiabatic temperature KW - Preferential diffusion KW - Turbulence KW - Vortex/flame interactions N1 - Accession Number: 9446219; Kattaa, V.R. 1; Email Address: vrkatta@erinet.com Meyer, T.R. 1 Gord, J.R. 2 Roquemore, W.M. 2; Affiliation: 1: Innovative Scientific Solutions, Inc., 2766 Indian Ripple Rd., Dayton, OH 45440 USA U.S.A 2: Air Force Research Laboratory, Propulsion Directorate, Wright-Patterson Air Force Base, OH 45433 USA U.S.A; Source Info: Mar2003, Vol. 132 Issue 4, p639; Subject Term: DIFFUSION; Subject Term: FLUID dynamics; Author-Supplied Keyword: Diffusion flames; Author-Supplied Keyword: Non-adiabatic temperature; Author-Supplied Keyword: Preferential diffusion; Author-Supplied Keyword: Turbulence; Author-Supplied Keyword: Vortex/flame interactions; Number of Pages: 13p; Document Type: Article L3 - 10.1016/S0010-2180(02)00517-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9446219&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hosur, M.V. AU - Adya, M. AU - Vaidya, U.K. AU - Mayer, A. AU - Jeelani, S. T1 - Effect of stitching and weave architecture on the high strain rate compression response of affordable woven carbon/epoxy composites JO - Composite Structures JF - Composite Structures Y1 - 2003/03// VL - 59 IS - 4 M3 - Article SP - 507 SN - 02638223 AB - In this study, experimental investigations on stitched and unstitched woven carbon/epoxy laminates under high strain rate compression loading are discussed. Stitched/unstitched laminates are fabricated with aerospace grade plain and satin weave fabrics with room temperature curing SC-15 epoxy resin using affordable vacuum assisted resin infusion molding process. The samples are subjected to high strain rate loading using modified compression split Hopkinson’s pressure bar at three different strain rates ranging from 320 to 1149 s−1. Results are discussed in terms of unstitched/stitched configuration, fabric type and loading directions. Dynamic compression properties are compared with those of static loading. Failure mechanisms are characterized through optical and scanning microscopy. [Copyright &y& Elsevier] AB - Copyright of Composite Structures is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GUMS & resins KW - STRAINS & stresses (Mechanics) KW - COMPOSITE materials KW - High strain rate loading KW - Hopkinson pressure bar KW - Stitching KW - Vacuum assisted resin infusion molding KW - Woven composites N1 - Accession Number: 8901686; Hosur, M.V. 1; Email Address: hosur@tusk.edu Adya, M. 1 Vaidya, U.K. 2 Mayer, A. 3 Jeelani, S. 1; Affiliation: 1: Center for Advanced Materials, Tuskegee University, Tuskegee, AL 36088, USA 2: Department of Material Science and Engineering, The University of Alabama in Birmingham, Birmingham, AL 35294-4461, USA 3: Structural Design and Development Branch (VASD), Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433-7531, USA; Source Info: Mar2003, Vol. 59 Issue 4, p507; Subject Term: GUMS & resins; Subject Term: STRAINS & stresses (Mechanics); Subject Term: COMPOSITE materials; Author-Supplied Keyword: High strain rate loading; Author-Supplied Keyword: Hopkinson pressure bar; Author-Supplied Keyword: Stitching; Author-Supplied Keyword: Vacuum assisted resin infusion molding; Author-Supplied Keyword: Woven composites; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; Number of Pages: 17p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8901686&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Phillips, Chandler A. AU - Repperger, Daniel W. T1 - Physiological state model for human ergonomic workload JO - Computers in Biology & Medicine JF - Computers in Biology & Medicine Y1 - 2003/03// VL - 33 IS - 2 M3 - Article SP - 143 SN - 00104825 AB - Twenty ergonomic tasks were evaluated in which human operators performed mixed static work and dynamic work. Steady-state physiological data are the input into a model as regressor variables, which are then multiplied by the respective regressor coefficients. The resultant physiological state model output is a single response variable that represents the workload. Mixed stepping regression techniques were utilized to calculate the regressor coefficients. Ten physiological state model equations resulted. A lower order equation (with three regressor variables) accounted for 80% of the observed variance. The highest order equation (with ten regressor variables) accounted for 89% of the variance. [Copyright &y& Elsevier] AB - Copyright of Computers in Biology & Medicine is the property of Elsevier Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHYSIOLOGY KW - ERGONOMICS KW - Ergonomic engineering KW - Human workload KW - Mathematical model KW - Multiple regression KW - Physiological state N1 - Accession Number: 9008338; Phillips, Chandler A. 1; Email Address: chandler.phillips@wright.edu Repperger, Daniel W. 2; Affiliation: 1: Department of Biomedical, Industrial and Human Factors Engineering, Wright State University, Dayton, OH 45435, USA 2: Air Force Research Laboratory, AFRL/HECP, Wright-Patterson AFB, OH 45433, USA; Source Info: Mar2003, Vol. 33 Issue 2, p143; Subject Term: PHYSIOLOGY; Subject Term: ERGONOMICS; Author-Supplied Keyword: Ergonomic engineering; Author-Supplied Keyword: Human workload; Author-Supplied Keyword: Mathematical model; Author-Supplied Keyword: Multiple regression; Author-Supplied Keyword: Physiological state; Number of Pages: 25p; Document Type: Article L3 - 10.1016/S0010-4825(02)00064-1 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9008338&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Müller, Tina Andrea AU - Werlen, Christoph AU - Spain, Jim AU - van der Meer, Jan Roelof T1 - Evolution of a chlorobenzene degradative pathway among bacteria in a contaminated groundwater mediated by a genomic island in Ralstonia. JO - Environmental Microbiology JF - Environmental Microbiology Y1 - 2003/03// VL - 5 IS - 3 M3 - Article SP - 163 EP - 173 PB - Wiley-Blackwell SN - 14622912 AB - Summary The genetic structure of two Ralstonia spp., strain JS705 and strain JS745, isolated from the same groundwater aquifer, was characterized with respect to the degradation capacities for toluene and chlorobenzene degradation. Cosmid library construction, cloning, DNA sequencing and mating experiments indicated that the genes for chlorobenzene degradation in strain JS705 were a mosaic of the clc genes, previously described for Pseudomonas sp. strain B13, and a 5 kb fragment identical to strain JS745. The 5 kb fragment identical to both JS705 and JS745 was flanked in JS705 by one complete and one incomplete insertion (IS) element. This suggested involvement of the IS element in mobilizing the genes from JS745 to JS705, although insertional activity of the IS element in its present configuration could not be demonstrated. The complete genetic structure for chlorobenzene degradation in strain JS705 resided on a genomic island very similar to the clc element (Ravatn, R., Studer, S., Springael, D., Zehnder, A.J., van der Meer, J.R. 1998. Chromosomal integration, tandem amplification, and deamplification in Pseudomonas putida F1 of a 105-kilobase genetic element containing the chlorocatechol degradative genes from Pseudomonas sp. strain B13. J Bacteriol 180: 4360–4369). The unique reconstruction of formation of a metabolic pathway through the activity of IS elements and a genomic island in the chlorobenzene-degrading strain JS705 demonstrated how pathway evolution can occur under natural conditions in a few ‘steps’. [ABSTRACT FROM AUTHOR] AB - Copyright of Environmental Microbiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GROUNDWATER -- Microbiology KW - BACTERIAL genetics KW - RALSTONIA N1 - Accession Number: 9121153; Müller, Tina Andrea 1 Werlen, Christoph 1 Spain, Jim 2 van der Meer, Jan Roelof 1; Affiliation: 1: Swiss Federal Institute for Environmental Science and Technology (EAWAG), Ueberlandstrasse 133, CH-8600 Dübendorf, Switzerland. 2: Air Force Research Laboratory, AFRL/MLQL, 139 Barnes Drive, Tyndall AFB, FL 32403, USA.; Source Info: Mar2003, Vol. 5 Issue 3, p163; Subject Term: GROUNDWATER -- Microbiology; Subject Term: BACTERIAL genetics; Subject Term: RALSTONIA; Number of Pages: 11p; Document Type: Article L3 - 10.1046/j.1462-2920.2003.00400.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9121153&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Karpets, M.V. AU - Milman, Yu.V. AU - Barabash, O.M. AU - Korzhova, N.P. AU - Senkov, O.N. AU - Miracle, D.B. AU - Legkaya, T.N. AU - Voskoboynik, I.V. T1 - The influence of Zr alloying on the structure and properties of Al3Ti JO - Intermetallics JF - Intermetallics Y1 - 2003/03// VL - 11 IS - 3 M3 - Article SP - 241 SN - 09669795 AB - The phase stability and transformations in Al3(Ti1-xZrx) intermetallic alloys (x=0–1) produced by arc melting were studied in the temperature range of 20 to 1100°C by using an in situ X-ray diffraction (XRD) method. Two phases, D022 and D023, both having ordered tetragonal structures, were present at room temperature at zirconium concentrations from 1 to 10 at.% (x =0.04–0.4). At higher concentrations of Zr (0.4101¯1 deformation twinning. During the second pass, the deformation mechanism changed to dislocation slip on a system which depended on the specific route. For route C, prism (a) and pyramidal (c+a) slip occurred within alternating twin bands. For route B, prism a slip was the main deformation mechanism. For route A, deformation was controlled by basal a slip and micro-twinning in alternating twin bands. The variation in deformation behavior was interpreted in terms of the texture formed during the first pass and the Schmid factors for slip during subsequent deformation. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROSTRUCTURE KW - TITANIUM KW - STRAINS & stresses (Mechanics) KW - Equal-channel angular pressing KW - Slip KW - TEM KW - Titanium KW - Twinning N1 - Accession Number: 9007918; Shin, D.H. 1; Email Address: dhshin@hanyang.ac.kr Kim, I. 1 Kim, J. 1 Kim, Y.S. 2 Semiatin, S.L. 3; Affiliation: 1: Department of Metallurgy and Materials Science, Hanyang University, Ansan, Kyunggi-Do 425-791, South Korea 2: Department of Materials Science and Engineering, Hongik University, Seoul 121-791, South Korea 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Feb2003, Vol. 51 Issue 4, p983; Subject Term: MICROSTRUCTURE; Subject Term: TITANIUM; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: Equal-channel angular pressing; Author-Supplied Keyword: Slip; Author-Supplied Keyword: TEM; Author-Supplied Keyword: Titanium; Author-Supplied Keyword: Twinning; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 14p; Document Type: Article L3 - 10.1016/S1359-6454(02)00501-3 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9007918&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ivasishin, O.M. AU - Shevchenko, S.V. AU - Vasiliev, N.L. AU - Semiatin, S.L. T1 - 3D Monte-Carlo simulation of texture-controlled grain growth JO - Acta Materialia JF - Acta Materialia Y1 - 2003/02/25/ VL - 51 IS - 4 M3 - Article SP - 1019 SN - 13596454 AB - A three-dimensional (3D) Monte-Carlo (MC) routine was developed to quantify the interaction of grain growth and texture development during annealing. The program included special software to enable the input of the initial grain structure and texture and incorporated a description of the misorientation-dependence of the grain-boundary mobility. Outputs from the model quantified the evolving texture in terms of pole figures or crystallite orientation distribution functions and statistics on the grain structure such as the grain-size distribution and boundary-misorientation distribution function. The MC routine was applied to establish grain growth and texture development in materials with random or strongly textured starting conditions and isotropic or anisotropic grain-boundary mobility. Depending on the starting condition and material properties, normal grain growth or a behavior characterized by alternating cycles of fast and slow grain growth was predicted. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CRYSTAL grain boundaries KW - ANNEALING of metals KW - MONTE Carlo method KW - ANISOTROPY KW - Grain growth KW - Potts model KW - Texture N1 - Accession Number: 9007921; Ivasishin, O.M. 1; Email Address: ivas@imp.kiev.ua Shevchenko, S.V. 1 Vasiliev, N.L. 1 Semiatin, S.L. 2; Affiliation: 1: Institute for Metal Physics, 36 Vernadsky Str., 03142 Kiev, Ukraine 2: Air Force Research Laboratory, AFRL/ML, Wright-Patterson Air Force Base, OH 45433-7817 USA; Source Info: Feb2003, Vol. 51 Issue 4, p1019; Subject Term: CRYSTAL grain boundaries; Subject Term: ANNEALING of metals; Subject Term: MONTE Carlo method; Subject Term: ANISOTROPY; Author-Supplied Keyword: Grain growth; Author-Supplied Keyword: Potts model; Author-Supplied Keyword: Texture; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; Number of Pages: 16p; Document Type: Article L3 - 10.1016/S1359-6454(02)00505-0 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9007921&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wen, Y.H. AU - Simmons, J.P. AU - Shen, C. AU - Woodward, C. AU - Wang, Y. T1 - Phase-field modeling of bimodal particle size distributions during continuous cooling JO - Acta Materialia JF - Acta Materialia Y1 - 2003/02/25/ VL - 51 IS - 4 M3 - Article SP - 1123 SN - 13596454 AB - Microstructures in Nickel-base alloys typically contain a two-phase mixture of γ/γ′. The microstructure having a bimodal size distribution of γ′ is of particular interest because it has important property consequences . In this paper, the phase-field method with an explicit nucleation algorithm is employed to investigate the microstructural development during a continuous cooling with various cooling rates. It is demonstrated that bimodal particle size distributions can be achieved at an intermediate cooling rate due to a coupling between diffusion and undercooling, in which the system experiences two peaks of well-isolated nucleation events. It is suggested that this is caused by soft impingement, followed by a renewal of driving force for nucleation, followed by a subsequent soft impingement. Under very high cooling rates, the microstructure becomes unimodal, because undercooling always outruns diffusion and the microstructure never reaches soft impingement. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALLOYS KW - NICKEL KW - NUCLEATION KW - MICROSTRUCTURE KW - Bimodal particle size distributions KW - Continuous cooling KW - Ni-base alloy KW - Phase-field approach N1 - Accession Number: 9007930; Wen, Y.H. 1; Email Address: youhai.wen@wpafb.af.mil Simmons, J.P. 2 Shen, C. 3 Woodward, C. 1 Wang, Y. 3; Affiliation: 1: UES, Inc., Dayton, OH 45432, USA 2: Air Force Research Laboratory, AFRL/MLLM, Wright-Patterson AFB, OH 45433, USA 3: The Ohio State University, 2041 College Road, Columbus, OH 43210, USA; Source Info: Feb2003, Vol. 51 Issue 4, p1123; Subject Term: ALLOYS; Subject Term: NICKEL; Subject Term: NUCLEATION; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: Bimodal particle size distributions; Author-Supplied Keyword: Continuous cooling; Author-Supplied Keyword: Ni-base alloy; Author-Supplied Keyword: Phase-field approach; NAICS/Industry Codes: 416210 Metal service centres; Number of Pages: 10p; Document Type: Article L3 - 10.1016/S1359-6454(02)00516-5 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9007930&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Zhang, X.D. AU - Bonniwell, P. AU - Fraser, H.L. AU - Baeslack III, W.A. AU - Evans, D.J. AU - Ginter, T. AU - Bayha, T. AU - Cornell, B. T1 - Effect of heat treatment and silicon addition on the microstructure development of Ti–6Al–2Cr–2Mo–2Sn–2Zr alloy JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2003/02/25/ VL - 343 IS - 1/2 M3 - Article SP - 210 SN - 09215093 AB - Microstructural development of Ti–6–22–22–0.22Si and Ti–6–22–22–0.02Si after beta, alpha/beta, and aging heat treatment was investigated. Primary alpha morphology was determined following beta heat treatment. Cooling rate from beta treatment was found significantly influence the HCP transformation products, ranging from principally alpha-prime martensite and acicular alpha at rates exceeding 5.5 °C s−1, to mixtures of Widmanstatten and colony alpha at intermediate cooling rate, to colony alpha at the slowest rates of 0.27 and 0.055 °C s−1. Varying cooling rates from the alpha/beta heat treatment significantly influenced the volume fraction of retained beta phase and secondary alpha in the microstructure. Higher cooling rate resulted in greater retention of the beta phase and transformation of the phase into secondary alpha upon aging. This higher amount of fine, secondary alpha phase promoted higher strength and lower toughness. Alpha/beta heat treatment temperature significantly influenced the heat treatment response of the microstructure. High heat treatment temperatures promoted greater amounts of retained beta with fine, transformed alpha in the final microstructures. Lower alpha/beta heat treatment temperatures promoted retained beta microstructures which were less responsive to aging treatment. Aging treatment promoted decomposition of retained beta phase, particularly in larger retained-beta regions that exhibited lower stability. Microstructural characteristics of heat treated high and low Si alloys appears identical in most cases. However, very fine silicides were observed in the high Si alloy after aging at 593 °C, which may have a significant effect on fracture toughness. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM KW - MICROSTRUCTURE KW - INTERMETALLIC compounds KW - MICROSCOPY KW - Intermetallic KW - Microstructure KW - Optical microscopy KW - Phase equilibria KW - Titanium N1 - Accession Number: 8573031; Zhang, X.D. 1; Email Address: zhangxd@agere.com Bonniwell, P. 1 Fraser, H.L. 1 Baeslack III, W.A. 1 Evans, D.J. 2 Ginter, T. 3 Bayha, T. 3 Cornell, B. 3; Affiliation: 1: The Ohio State University, Columbus, OH 43210, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, Dayton, OH 45433, USA 3: Lockheed Martin Aeronautical Systems, Marietta, GA 30063, USA; Source Info: Feb2003, Vol. 343 Issue 1/2, p210; Subject Term: TITANIUM; Subject Term: MICROSTRUCTURE; Subject Term: INTERMETALLIC compounds; Subject Term: MICROSCOPY; Author-Supplied Keyword: Intermetallic; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Optical microscopy; Author-Supplied Keyword: Phase equilibria; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 17p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8573031&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Paxton, Larry J. AU - Morrison, Daniel AU - Strickland, Douglas J. AU - McHarg, M. Geoff AU - Zhang, Yongliang AU - Wolven, Brian AU - Kill, Hyosub AU - Crowley, Geoff AU - Christensen, Andrew B. AU - Meng, Ching-I T1 - The use of far ultraviolet remote sensing to monitor space weather JO - Advances in Space Research JF - Advances in Space Research Y1 - 2003/02/15/ VL - 31 IS - 4 M3 - Article SP - 813 SN - 02731177 AB - This paper discusses the connection between changes in Earth''s thermosphere and ionosphere induced by changes in the Earth''s local space environment (or “space weather”) and the phenomena observed in far ultraviolet images of the Earth. Two new experiments, the Global Ultraviolet Imager (GUVI) and the Special Sensor Ultraviolet Imager (SSUSI), will provide a new capability for monitoring changes in thermospheric composition and ionospheric density as they change in response to space weather. These sensors provide a ten-fold improvement in spatial and temporal resolution and a greater than ten-fold improvement in sensitivity over that provided by sensors on the POLAR and IMAGE satellites. These sensors are expected to provide new insights into the mesoscale coupling between the ionosphere and thermosphere, as well as allowing us to develop a better specification of the high latitude convection electric field pattern. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPACE environment KW - THERMOSPHERE KW - IONOSPHERE KW - ULTRAVIOLET astronomy N1 - Accession Number: 10799563; Paxton, Larry J. 1 Morrison, Daniel 1 Strickland, Douglas J. 2 McHarg, M. Geoff 3 Zhang, Yongliang 1 Wolven, Brian 1 Kill, Hyosub 1 Crowley, Geoff 4 Christensen, Andrew B. 5 Meng, Ching-I 1; Affiliation: 1: The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Rd., Laurel, MD, 20723, USA 2: Computational Physics, Inc., 8001 Braddock Rd, Fairfax, VA, 22151, USA 3: US Air Force Academy, Colorado Springs, CO, USA 4: Southwest Research Institute, 6220 Culebra Rd, San Antonio TX, 78238, USA 5: Aerospace Corp., POB 92957 MS254, Los Angeles, CA 90009, USA; Source Info: Feb2003, Vol. 31 Issue 4, p813; Subject Term: SPACE environment; Subject Term: THERMOSPHERE; Subject Term: IONOSPHERE; Subject Term: ULTRAVIOLET astronomy; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10799563&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - O'Brien, K. AU - Smart, D.F. AU - Shea, M.A. AU - Felsberger, E. AU - Schrewe, U. AU - Friedberg, W. AU - Copeland, K. T1 - World-wide radiation dosage calculations for air crew members JO - Advances in Space Research JF - Advances in Space Research Y1 - 2003/02/15/ VL - 31 IS - 4 M3 - Article SP - 835 SN - 02731177 AB - A greatly improved version of the computer program to calculate radiation dosage to air crew members is now available. Designated CARI-6, this program incorporates an updated geomagnetic cutoff rigidity model and a revision of the primary cosmic ray spectrum based on recent work by Gaisser and Stanev (1998). We believe CARI-6 provides the most accurate available method for calculating the radiation dosage to air crew members. The program is now utilized by airline companies around the world and provides unification for subsequent world-wide studies on the effects of natural radiation on aircrew members. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RADIATION dosimetry KW - FLIGHT crews KW - COSMIC rays N1 - Accession Number: 10799566; O'Brien, K. 1 Smart, D.F. 2 Shea, M.A. 2 Felsberger, E. 3 Schrewe, U. 4 Friedberg, W. 5 Copeland, K. 5; Affiliation: 1: Northern Arizona University, Flagstaff, AZ 86011, USA 2: Air Force Research Laboratory, Space Vehicles Directorate, Bedford, MA 01731, USA 3: University of Technology, Peterspasse 1614, 8010 Graz, Austria 4: University of Applied Science and Arts Department of Mechanical Engineering Ricklinger Stadtweg 120, D-30459 Hannover, Germany 5: Civil Aeromedical Institute, Federal Aviation Administration, Oklahoma City,7 OK 73125, USA; Source Info: Feb2003, Vol. 31 Issue 4, p835; Subject Term: RADIATION dosimetry; Subject Term: FLIGHT crews; Subject Term: COSMIC rays; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10799566&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nicolaou, P.D. AU - Semiatin, S.L. T1 - An experimental and theoretical investigation of the influence of stress state on cavitation during hot working JO - Acta Materialia JF - Acta Materialia Y1 - 2003/02/07/ VL - 51 IS - 3 M3 - Article SP - 613 SN - 13596454 AB - The effect of stress triaxiality on cavity growth during necking in the hot tension test was investigated and quantified. Experimentally, Ti–6Al–4V specimens deformed over a range of temperatures and strain rates developed necks of different sharpness and thus of varying levels of the ratio of hydrostatic to effective stress. The magnitude of these stresses was calculated using the classical work of Bridgman. Metallographic examination revealed that the average cavity size, cavity population, and cavity volume fraction were higher in the central region of each specimen as compared to that in the edge region. An analytical model was developed to separate the effects of cavity nucleation and coalescence from the apparent cavity growth rate and thus to determine the individual cavity growth rate at the two locations. The ratio of the cavity growth rate at the center of the specimen to that of the edge was correlated to the stress state (i.e., ratio of mean to effective stress) and compared to predictions derived from the work of Rice and Tracey and of Pilling and Ridley. These comparisons demonstrated that model predictions based on the Pilling-and-Ridley work provided good agreement with observations at low levels of hydrostatic stress, while the Rice-and-Tracey approach was better at higher levels. In addition, it was established that the analysis could be applied over a wider range of processing and material parameters than that originally assumed by Pilling and Ridley and Rice and Tracey. [Copyright &y& Elsevier] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRAINS & stresses (Mechanics) KW - HYDROSTATICS KW - NUCLEATION KW - CAVITATION KW - Cavity growth rate KW - Ductile fracture KW - Hot working KW - Stress triaxiality N1 - Accession Number: 8996435; Nicolaou, P.D. 1; Email Address: P.Nicolaou@S.andB.gr Semiatin, S.L. 2; Affiliation: 1: Silver and Baryte, 21A Amerikis Str., 106 72, Athens, Greece 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Feb2003, Vol. 51 Issue 3, p613; Subject Term: STRAINS & stresses (Mechanics); Subject Term: HYDROSTATICS; Subject Term: NUCLEATION; Subject Term: CAVITATION; Author-Supplied Keyword: Cavity growth rate; Author-Supplied Keyword: Ductile fracture; Author-Supplied Keyword: Hot working; Author-Supplied Keyword: Stress triaxiality; Number of Pages: 11p; Document Type: Article L3 - 10.1016/S1359-6454(02)00441-X UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8996435&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wright, J.W. AU - Bullett, T.W. T1 - The applicability of advanced ionosondes to the IRI JO - Advances in Space Research JF - Advances in Space Research Y1 - 2003/02// VL - 31 IS - 3 M3 - Article SP - 775 SN - 02731177 AB - The ionosonde has evolved from the early analog film-recording depictor of the ionosphere, into a precision diagnositic instrument. Contemporary monitoring ionosondes occupy an intermediate niche in this evolution. Some of these present digital ionogram images to interpretation experts who use the conveniences of digital data presentation to identify and record parameter values. This approach can improve parameter precision, but it remains as labor intensive as in the days of film recording. Other monitoring in accuracy compared to manual analysis. The reduction in accuracy is often unquantified, which can introduce unknown errors into the IRI and other ionosphere models. Autoscaling algorithms have not succeeded to duplicate expert judgments because, in part, of the limited information available from contemporary monitoring instruments. Advanced digital ionosondes can make up this difference, and much more, with precision measurements of all available echo properties. Automated data reduction algorithms can use these measurements to improve the accuracy and continuity of established parameters, and to develop new diagnostic capabilities for a wider variety of ionospheric properties. These improvements are essential for the continuing development of ionospheric models such as the IRI. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSONDES KW - IONOSPHERE N1 - Accession Number: 10366718; Wright, J.W. 1 Bullett, T.W. 2; Affiliation: 1: National Geophysical Data Center/NOAA, and the Cooperative Institute for Research in Environmental Sciences, 325 Broadway, Boulder, Colorado, 80303, USA 2: Space Vehicles Directorate, Air Force Research Laboratory, 29 Randolph Road, Hanscom AFB Bedford, MA 01731-3010, USA; Source Info: Feb2003, Vol. 31 Issue 3, p775; Subject Term: IONOSONDES; Subject Term: IONOSPHERE; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10366718&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Olsson, Robin AU - Iwarsson, Jonas AU - Melin, L. Gunnar AU - Sjögren, Anders AU - Solti, Jim T1 - Experiments and analysis of laminates with artificial damage JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2003/02// VL - 63 IS - 2 M3 - Article SP - 199 SN - 02663538 AB - Quasi-isotropic carbon/epoxy laminates with holes, polymer plugs and cut fibres are studied experimentally and analytically. Strain fields are measured using digital speckle photography. The results are used to validate an inverse method, where elastic properties of inclusions are determined by matching computed and measured displacements. Tensile and compressive strength is measured and the applicability of notch failure criteria to soft inclusions is examined. Available closed form solutions agree well with measured strains. The elastic properties predicted by the inverse method are in fairly good agreement with data from coupon tests although predictions are sensitive to measuring errors. The laminate toughness in compression was higher than in tension, as expected from the different failure mechanisms (fibre kinking versus fibre tearing). Laminates with inclusions were tougher than laminates with holes, which may indicate that inclusions restrain in-plane fibre kinking. Higher toughness was reflected in larger characteristic lengths. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAMINATED materials KW - STRAINS & stresses (Mechanics) KW - A. Polymer-matrix composites (PMCs) KW - B. Strength KW - C. Elastic properties KW - C. Finite element analysis (FEA) KW - C. Stress concentrations N1 - Accession Number: 8621006; Olsson, Robin 1; Email Address: robin.olsson@foi.se Iwarsson, Jonas 1 Melin, L. Gunnar 1 Sjögren, Anders 2 Solti, Jim 1,3; Affiliation: 1: Swedish Defence Research Agency (FOI), Aeronautics Division, SE-172 90 Stockholm, Sweden 2: SICOMP AB, Box 104, SE-431 22 Mölndal, Sweden 3: US Air Force Academy, 2354 Fairchild Drive, Suite 6H2, USAF Academy, CO 80840-6240, USA; Source Info: Feb2003, Vol. 63 Issue 2, p199; Subject Term: LAMINATED materials; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: A. Polymer-matrix composites (PMCs); Author-Supplied Keyword: B. Strength; Author-Supplied Keyword: C. Elastic properties; Author-Supplied Keyword: C. Finite element analysis (FEA); Author-Supplied Keyword: C. Stress concentrations; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8621006&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gordnier, Raymond E. AU - Fithen, Robert T1 - Coupling of a nonlinear finite element structural method with a Navier–Stokes solver JO - Computers & Structures JF - Computers & Structures Y1 - 2003/02// VL - 81 IS - 2 M3 - Article SP - 75 SN - 00457949 AB - A new three-dimensional viscous aeroelastic solver is developed in the present work. A well validated full Navier–Stokes code is coupled with a nonlinear finite element plate model. Implicit coupling between the computational fluid dynamics and structural solvers is achieved using a subiteration approach. Computations of several benchmark static and dynamic plate problems are used to validate the finite element portion of the code. This coupled aeroelastic scheme is then applied to the problem of three-dimensional panel flutter. Inviscid and viscous supersonic results match previous computations using the same aerodynamic method coupled with a finite difference structural solver. For the case of subsonic flow, multiple solutions consisting of static, upward and downward deflections of the panel are discussed. The particular solution obtained is shown to be sensitive to the cavity pressure specified underneath the panel. [Copyright &y& Elsevier] AB - Copyright of Computers & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AEROELASTICITY KW - FLUID dynamics KW - Aeroelastic KW - Computational fluid dynamics KW - Finite element KW - Navier–Stokes equations KW - Nonlinear plate model KW - Panel flutter N1 - Accession Number: 9096727; Gordnier, Raymond E. 1; Email Address: raymond.gordnier@wpafb.af.mil Fithen, Robert 2; Email Address: robert.fithen@mail.atu.edu; Affiliation: 1: Air Force Research Laboratory, Computational Sciences Branch, Air Vehicles Directorate, AFRL/VAAC, Building 146 Rm 225, 2210 Eighth Street, Wright-Patterson AFB, OH 45433-7512, USA 2: Department of Mechanical Engineering, Arkansas Tech University, Russellville, AR 72801, USA; Source Info: Feb2003, Vol. 81 Issue 2, p75; Subject Term: AEROELASTICITY; Subject Term: FLUID dynamics; Author-Supplied Keyword: Aeroelastic; Author-Supplied Keyword: Computational fluid dynamics; Author-Supplied Keyword: Finite element; Author-Supplied Keyword: Navier–Stokes equations; Author-Supplied Keyword: Nonlinear plate model; Author-Supplied Keyword: Panel flutter; Number of Pages: 15p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9096727&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hosur, M. V. AU - Alexander, J. AU - Jeelani, S. AU - Vaidya, U. K. AU - Mayer, A. T1 - High Strain Compression Response of Affordable Woven Carbon/Epoxy Composites. JO - Journal of Reinforced Plastics & Composites JF - Journal of Reinforced Plastics & Composites Y1 - 2003/02// VL - 22 IS - 3 M3 - Article SP - 271 EP - 296 AB - This paper discusses the experimental study on the response of affordable plain and satin weave carbon/epoxy composite laminates subjected to high strain rate compression loading using a modified Compression Split Hopkinson's Pressure Bar (SHPB). 37 layer laminates were manufactured using aerospace grade woven fabrics with SC-15 epoxy resin system utilizing Vacuum Assisted Resin Infusion Molding (VARIM) approach. Samples were subjected to high strain rate compression loading at five different strain rates ranging from 17/s to 817/s in the in-plane as well as through-the-thickness directions using a modified SHPB that facilitates controlled single pulse loading of the sample. High strain rate response was compared with that of static compression. Optical microscopy was used to characterize the failure mechanisms. Resets of the study indicate considerable increase in dynamic compression peak stress as compared to static loading, whereas the strain at peak stress was lower by 35-65%. Samples loaded through-the-thickness exhibit higher peak stresses as compared to those loaded in the in-plane direction. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Reinforced Plastics & Composites is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LAMINATED materials KW - COMPOSITE materials KW - STRAINS & stresses (Mechanics) KW - ELASTIC solids KW - MECHANICS (Physics) KW - high strain rate KW - resin infusion molding KW - split Hopkinson's pressure bar KW - woven composites N1 - Accession Number: 12002848; Hosur, M. V. 1 Alexander, J. 1 Jeelani, S. 1 Vaidya, U. K. 2 Mayer, A. 3; Affiliation: 1: Center for Advanced Materials, Tuskegee University, Tuskegee, AL 36088, USA 2: Department of Materials and Mechanical Engineering, University of Alabama, Birmingham, AL 35294, USA 3: Air Force Research Laboratory, VASD, WPAFB, OH 45433, USA; Source Info: 2003, Vol. 22 Issue 3, p271; Subject Term: LAMINATED materials; Subject Term: COMPOSITE materials; Subject Term: STRAINS & stresses (Mechanics); Subject Term: ELASTIC solids; Subject Term: MECHANICS (Physics); Author-Supplied Keyword: high strain rate; Author-Supplied Keyword: resin infusion molding; Author-Supplied Keyword: split Hopkinson's pressure bar; Author-Supplied Keyword: woven composites; Number of Pages: 26p; Illustrations: 5 Black and White Photographs, 2 Diagrams, 5 Charts, 8 Graphs; Document Type: Article L3 - 10.1106/073168403022844 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12002848&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Naboulsi, S. AU - Mall, S. T1 - Fretting fatigue crack initiation behavior using process volume approach and finite element analysis JO - Tribology International JF - Tribology International Y1 - 2003/02// VL - 36 IS - 2 M3 - Article SP - 121 SN - 0301679X AB - This study investigates crack initiation behavior by incorporating fretting fatigue process volume. Three critical plane based fretting fatigue crack initiation parameters are characterized by computing their averaged values over the process volume and then comparing with their counterparts obtained from the localized approach. Two approaches are used: first one involves the computation of parameter at several points over a rectangular region and then its average, and second approach computes the average state of stress/strain over a radial region from which the averaged parameter is calculated. Both approaches require pre-determination of a critical location at or around which the process volume needs to be placed. Effects of size and location of process volume on the averaged value of parameters are studied in detail. Two radii of cylindrical pad are analyzed to investigate the effect of severity of stress gradient on process volume approach. Effects of finite element mesh refinement are also investigated. Averaged value of parameter decreases with the increase of process volume size. This decrease is higher when the process volume is located in the region that is away from the contact zone. Further, a parameter based on normal stress on the critical plane shows more dependence on the size of process volume than that based on shear stress or on a combination of both shear and normal stresses. Orientation of crack initiation changes within a range that is well within the scatter band of experimental observations as the process volume size increases. Averaged value of parameter for a pad with higher stress gradient has a larger reduction with the increase of process volume size than that with a lower stress gradient. Process volume size has less effect on the averaged value of parameter with coarser finite element mesh. Finally, the localized approach provides a conservative value of fretting fatigue crack initiation parameter compared to its counterpart based on the process volume. [Copyright &y& Elsevier] AB - Copyright of Tribology International is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HONEYCOMB weathering KW - CONTACT mechanics KW - FINITE element method KW - Contact mechanics KW - Crack initiation prediction KW - Critical plane approach KW - Finite element analysis KW - Fretting fatigue N1 - Accession Number: 8575615; Naboulsi, S. 1 Mall, S. 2; Email Address: shankar.mall@afit.edu; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology (AFIT/ENY), Wright–Patterson Air Force Base, OH 45433-7765, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/MLLMN), Wright–Patterson Air Force Base, OH 45433-7817, USA; Source Info: Feb2003, Vol. 36 Issue 2, p121; Subject Term: HONEYCOMB weathering; Subject Term: CONTACT mechanics; Subject Term: FINITE element method; Author-Supplied Keyword: Contact mechanics; Author-Supplied Keyword: Crack initiation prediction; Author-Supplied Keyword: Critical plane approach; Author-Supplied Keyword: Finite element analysis; Author-Supplied Keyword: Fretting fatigue; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8575615&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hutson, A.L. AU - Neslen, C. AU - Nicholas, T. T1 - Characterization of fretting fatigue crack initiation processes in CR Ti–6Al–4V JO - Tribology International JF - Tribology International Y1 - 2003/02// VL - 36 IS - 2 M3 - Article SP - 133 SN - 0301679X AB - A study was conducted to quantify fretting fatigue damage and to evaluate the residual fatigue strength of specimens subjected to a range of fretting fatigue test conditions. Flat Ti–6Al–4V specimens were tested against flat Ti–6Al–4V fretting pads with blending radii at the edges of contact. Fretting fatigue damage for two combinations of static average clamping stress and applied axial stress was investigated for two percentages of total life. Accumulated damage was characterized using full field surface roughness evaluation and scanning electron microscopy (SEM). The effect of fretting fatigue on uniaxial fatigue strength was quantified by interrupting fretting fatigue tests, and conducting uniaxial residual fatigue strength tests at R=0.5 at 300 Hz. Results from the residual fatigue strength tests were correlated with characterization results.While surface roughness measurements, evaluated in terms of asperity height and asperity spacing, reflected changes in the specimen surfaces as a result of fretting fatigue cycling, those changes did not correspond to decreases in residual fatigue strength. Neither means of evaluating surface roughness was able to identify cracks observed during SEM characterization. Residual fatigue strength decreased only in the presence of fretting fatigue cracks with surface lengths of 150 μm or greater, regardless of contact condition or number of applied fretting fatigue cycles. No cracks were observed on specimens tested at the lower stress condition. Threshold stress intensity factors were calculated for cracks identified during SEM characterization. The resulting values were consistent with the threshold identified for naturally initiated cracks that were stress relieved to remove load history effects. [Copyright &y& Elsevier] AB - Copyright of Tribology International is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HONEYCOMB weathering KW - SURFACE roughness KW - Fretting fatigue KW - Surface roughness KW - Ti–6Al–4V N1 - Accession Number: 8575616; Hutson, A.L. 1; Email Address: alisha.hutson@wpafb.af.mil Neslen, C. 2 Nicholas, T. 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0128, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright–Patterson Air Force Base, OH 45433, USA; Source Info: Feb2003, Vol. 36 Issue 2, p133; Subject Term: HONEYCOMB weathering; Subject Term: SURFACE roughness; Author-Supplied Keyword: Fretting fatigue; Author-Supplied Keyword: Surface roughness; Author-Supplied Keyword: Ti–6Al–4V; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8575616&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - ABST AU - Brown, James A. T1 - Lateral gluteal myonecrosis in a patient undergoing partial nephrectomy in the modified flank position JO - Urology JF - Urology Y1 - 2003/02// VL - 61 IS - 2 M3 - Abstract SP - 462 SN - 00904295 AB - This is the first report of postoperative rhabdomyolysis occurring in a patient positioned in the “modified flank position,” with the kidney rest positioned under the top of the iliac crest. The patient was treated with aggressive intravenous fluid hydration and hyperbaric oxygen therapy with maintenance of normal renal function and near complete recovery of gluteal muscle function. [Copyright &y& Elsevier] AB - Copyright of Urology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RHABDOMYOLYSIS KW - KIDNEYS N1 - Accession Number: 9100695; Brown, James A. 1; Affiliation: 1: David Grant United States Air Force Medical Center, Travis Air Force Base, California, USA; Source Info: Feb2003, Vol. 61 Issue 2, p462; Subject Term: RHABDOMYOLYSIS; Subject Term: KIDNEYS; Number of Pages: 1p; Document Type: Abstract L3 - 10.1016/S0090-4295(02)02244-6 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9100695&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yang, S.Y. AU - Tansel, I.N. AU - Kropas-Hughes, C.V T1 - Selection of optimal material and operating conditions in composite manufacturing. Part I: computational tool JO - International Journal of Machine Tools & Manufacture JF - International Journal of Machine Tools & Manufacture Y1 - 2003/01/15/ VL - 43 IS - 2 M3 - Article SP - 169 SN - 08906955 AB - The Genetically Optimized Neural Network System (GONNS) is proposed as a human-like decision-making tool for the selection of optimum composite material and operating conditions. Multiple neural networks represent the characteristics of the system after a training process and genetic algorithms find the optimum operating conditions. The error of the GONNS was found to be less than 1% when the neural networks-represented analytical functions and genetic algorithms were used to select the optimal conditions. The GONNS is very promising for many complex optimization problems when analytical equations are not available to represent the characteristics of the system. [Copyright &y& Elsevier] AB - Copyright of International Journal of Machine Tools & Manufacture is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GENETIC algorithms KW - COMPOSITE materials KW - Composite material KW - Genetic algorithm KW - Neural networks KW - Optimization N1 - Accession Number: 8791634; Yang, S.Y. 1 Tansel, I.N. 1; Email Address: tanseli@fiu.edu Kropas-Hughes, C.V 2; Affiliation: 1: Center for Engineering and Applied Sciences, Department of Mechanical Engineering, Florida International University, 10555 West Flagler Street, Miami, FL 33174, USA 2: Wright Patterson AFB, Air Force Research Laboratory, AFRL/MLLP, Buildingg 655, R166, 2230 Tenth Street, Wright-Patterson AFB, OH 45433-7746, USA; Source Info: Jan2003, Vol. 43 Issue 2, p169; Subject Term: GENETIC algorithms; Subject Term: COMPOSITE materials; Author-Supplied Keyword: Composite material; Author-Supplied Keyword: Genetic algorithm; Author-Supplied Keyword: Neural networks; Author-Supplied Keyword: Optimization; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8791634&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yang, S.Y. AU - Girivasan, V. AU - Singh, N.R. AU - Tansel, I.N. AU - Kropas-Hughes, C.V. T1 - Selection of optimal material and operating conditions in composite manufacturing. Part II: complexity, representation of characteristics and decision making JO - International Journal of Machine Tools & Manufacture JF - International Journal of Machine Tools & Manufacture Y1 - 2003/01/15/ VL - 43 IS - 2 M3 - Article SP - 175 SN - 08906955 AB - An automated procedure is proposed to select the optimum material and processing conditions for composite materials. The complexity of the part is estimated from the STL files of the CAD/CAM programs by evaluating the angles between the triangles, which cover the surface. A correction algorithm identifies the holes and calculates the complexity without considering the triangles at their surfaces if they will be drilled later. Using multiple neural networks represented the most important characteristics of the composite material manufacturing for the user. For each considered material one genetic algorithm is assigned to select the optimal operating conditions. The optimal material is selected by comparing the good qualities of each material after the optimization. The proposed procedure is very attractive for optimization of complex systems when multiple approaches and their several characteristics are considered. [Copyright &y& Elsevier] AB - Copyright of International Journal of Machine Tools & Manufacture is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GENETIC algorithms KW - COMPOSITE materials KW - Complexity KW - Composite material KW - Genetic algorithm KW - Neural networks KW - Optimization KW - STL N1 - Accession Number: 8791635; Yang, S.Y. 1 Girivasan, V. 1 Singh, N.R. 1 Tansel, I.N. 1; Email Address: tanseli@fiu.edu Kropas-Hughes, C.V. 2; Affiliation: 1: Center for Engineering and Applied Sciences, Department of Mechanical Engineering, Florida International University, 10555 West Flagler Street, Miami, FL 33174, USA 2: Wright Patterson AFB, Air Force Research Laboratory, AFRL/MLLP, Building 655, R166, 2230 Tenth Street, Wright-Patterson AFB, OH 45433-7746, USA; Source Info: Jan2003, Vol. 43 Issue 2, p175; Subject Term: GENETIC algorithms; Subject Term: COMPOSITE materials; Author-Supplied Keyword: Complexity; Author-Supplied Keyword: Composite material; Author-Supplied Keyword: Genetic algorithm; Author-Supplied Keyword: Neural networks; Author-Supplied Keyword: Optimization; Author-Supplied Keyword: STL; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8791635&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Viggiano, A.A. AU - Knighton, W.B. AU - Williams, Skip AU - Arnold, Susan T. AU - Midey, Anthony J. AU - Dotan, I. T1 - A reexamination of the temperature dependence of the reaction of N+ with O2 JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2003/01/15/ VL - 223/224 IS - 1-3 M3 - Article SP - 397 SN - 13873806 AB - The rate constants for the reaction of N+ with O2 have been measured as a function of temperature (200–1400 K) in a selected ion flow tube (SIFT) and high temperature flowing afterglow (HTFA). The datasets agree well with each other and the rate constants exhibit little temperature dependence. This is in contrast to two previous experiments at elevated temperature that reported the rate constant increased with temperature up to 1000 K. A small part of the difference is explained by the absence of a thermal transpiration correction in the original measurements. The new data implies that rotational and translational energy both have little influence on the reactivity. The equivalent nature of the two types of energy is expected from studies on other systems. Vibrational excitation appears to increase the rate constants to near collisional. The branching ratios measured in the SIFT are in good agreement with previous drift tube results and show that rotational and translational energy have little effect on the individual channels. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ION flow dynamics KW - HIGH temperature chemistry KW - High temperature flowing afterglow KW - Rate constant KW - Selected ion flow tube N1 - Accession Number: 8578532; Viggiano, A.A.; Email Address: albert.viggiano@hanscom.af.mil Knighton, W.B. Williams, Skip 1 Arnold, Susan T. 1 Midey, Anthony J. Dotan, I.; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Hanscom, MA 01731-3010, USA; Source Info: Jan2003, Vol. 223/224 Issue 1-3, p397; Subject Term: ION flow dynamics; Subject Term: HIGH temperature chemistry; Author-Supplied Keyword: High temperature flowing afterglow; Author-Supplied Keyword: Rate constant; Author-Supplied Keyword: Selected ion flow tube; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8578532&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Arnold, Susan T. AU - Miller, Thomas M. AU - Viggiano, A.A. AU - Mayhew, Chris A. T1 - A temperature-dependent selected ion flow tube study of anions reacting with SF5CF3 JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2003/01/15/ VL - 223/224 IS - 1-3 M3 - Article SP - 403 SN - 13873806 AB - Rate constants and product distributions were measured for the reactions of trifluoromethyl sulfurpentafluoride (SF5CF3) with 11 anions using two selected ion flow tube instruments. The reaction of O2− was studied from 240 to 500 K and was found to proceed at approximately 30% of the collisional rate, yielding SF5− as the only product ion, presumably via a dissociative electron transfer mechanism. The reaction of OH− proceeds predominantly via nucleophilic attack at the carbon atom, displacing SF5− at approximately 25% of the collisional rate at 298 K. The rate constant exhibits a T−1.8 dependence from 240 to 500 K, suggesting the reaction occurs through a long-lived collision complex. The F− reaction, which proceeds at 70% the collisional rate at 298 K, also occurs via nucleophilic attack at the carbon atom, leading to the SF5− product ion. The O− ion reacts predominately by nucleophilic attack at the carbon atom and also via CF3 radical transfer to O−. The product branching fraction for the O− reaction did not vary with temperature, although the rate constant exhibits a T−1.6 dependence, similar to that of the OH− reaction. The ions SF6−, CF3−, NO2−, CO3−, Cl−, NO3−, and SF5− were found to be unreactive toward SF5CF3, despite the fact that sufficiently exothermic reactive channels exist for many of these ions. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANIONS KW - ION flow dynamics KW - Anion kinetics KW - SIFT KW - Trifluoromethyl sulfurpentafluoride N1 - Accession Number: 8578533; Arnold, Susan T. 1; Email Address: susan.arnold@hanscom.af.mil Miller, Thomas M. 1 Viggiano, A.A. 1 Mayhew, Chris A. 2; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Rd, Hanscom AFB, MA 01731-3010, USA 2: Molecular Physics Group, School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; Source Info: Jan2003, Vol. 223/224 Issue 1-3, p403; Subject Term: ANIONS; Subject Term: ION flow dynamics; Author-Supplied Keyword: Anion kinetics; Author-Supplied Keyword: SIFT; Author-Supplied Keyword: Trifluoromethyl sulfurpentafluoride; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8578533&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O.N. AU - Uchic, M.D. T1 - Microstructure evolution during annealing of an amorphous TiAl sheet JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2003/01/15/ VL - 340 IS - 1/2 M3 - Article SP - 216 SN - 09215093 AB - An amorphous, 150 μm thick freestanding sheet of a TiAl-based alloy was produced by physical vapor deposition (PVD). The following phase transformations were observed after different stages of crystallization of the amorphous sheet and analyzed using differential thermal analysis, X-ray diffraction, and transmission electron microscopy: amorphous→body centered cubic (β)→hexagonal close-packed (α)?→tetragonal (γ)+ordered α2. The β phase was formed as near-spherical particles that were evenly distributed in the amorphous phase and the size of these particles was approximately 90 nm. Formation of the α phase by decomposition of β and the remaining amorphous phases led to a very fine feathery-like microstructure arranged in colonies of approximately 100 nm in size. Interface boundaries between the α phase particles were poorly defined. The transformation of the metastable α phase into a mixture of the γ and α2 phases led to formation of an equiaxed γ-grain structure with the grain size of approximately 150 nm. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AMORPHOUS substances KW - VAPOR-plating KW - THERMAL analysis KW - Amorphous materials KW - Differential thermal analysis KW - Phase transformations KW - Physical vapor deposition KW - Titanium aluminide KW - X-ray diffraction N1 - Accession Number: 7918770; Senkov, O.N.; Email Address: oleg.senkov@wpafb.af.mil Uchic, M.D. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMD, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Jan2003, Vol. 340 Issue 1/2, p216; Subject Term: AMORPHOUS substances; Subject Term: VAPOR-plating; Subject Term: THERMAL analysis; Author-Supplied Keyword: Amorphous materials; Author-Supplied Keyword: Differential thermal analysis; Author-Supplied Keyword: Phase transformations; Author-Supplied Keyword: Physical vapor deposition; Author-Supplied Keyword: Titanium aluminide; Author-Supplied Keyword: X-ray diffraction; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7918770&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Peterson, Dale AU - Woodall, Douglas R. T1 - Erratum to “Edge-choosability in line-perfect multigraphs” [Discrete Mathematics 202 (1999) 191] JO - Discrete Mathematics JF - Discrete Mathematics Y1 - 2003/01/06/ VL - 260 IS - 1-3 M3 - Correction notice SP - 323 SN - 0012365X AB - A multigraph is line perfect if its line graph is perfect. In (Discrete Math. 202 (1999) 191) we claimed that if every edge e of a line-perfect multigraph G is given a list containing at least as many colors as there are edges in a largest edge-clique containing e, then G can be edge-colored from its lists. This note corrects a mistake in our proof. [Copyright &y& Elsevier] AB - Copyright of Discrete Mathematics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIGRAPH KW - GRAPHIC methods KW - Chromatic index KW - Edge choosability KW - Edge coloring KW - Line-perfect multigraph KW - List chromatic index KW - List-coloring conjecture KW - Perfect graph KW - Perfect line graph N1 - Accession Number: 8723478; Peterson, Dale 1; Email Address: dale.peterson@usafa.af.mil Woodall, Douglas R. 2; Affiliation: 1: Department of Mathematical Sciences, United States Air Force Academy, HQ USAFA/DFMS, 2354 Fairchild Drive, Suite 6D2A, USAF Academy, CO 80840-6252, USA 2: School of Mathematical Sciences, University of Nottingham, Nottingham NG7 2RD, England, UK; Source Info: Jan2003, Vol. 260 Issue 1-3, p323; Subject Term: MULTIGRAPH; Subject Term: GRAPHIC methods; Author-Supplied Keyword: Chromatic index; Author-Supplied Keyword: Edge choosability; Author-Supplied Keyword: Edge coloring; Author-Supplied Keyword: Line-perfect multigraph; Author-Supplied Keyword: List chromatic index; Author-Supplied Keyword: List-coloring conjecture; Author-Supplied Keyword: Perfect graph; Author-Supplied Keyword: Perfect line graph; Number of Pages: 4p; Document Type: Correction notice UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8723478&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Vahala, Linda AU - Vahala, George AU - Yepez, Jeffrey T1 - Lattice Boltzmann and quantum lattice gas representations of one-dimensional magnetohydrodynamic turbulence JO - Physics Letters A JF - Physics Letters A Y1 - 2003/01/06/ VL - 306 IS - 4 M3 - Article SP - 227 SN - 03759601 AB - A simplified one-dimensional (1D) magnetohydrodynamics (MHD) is solved using a lattice Boltzmann and a quantum lattice gas model. It is shown that the magnetic field decreases the strength of the velocity shock fronts, with marked spikes in the magnetic field strength that gradually broaden in time. There is very good agreement between the lattice Boltzmann model—a representation of non-linear systems that circumvent the non-local non-linear advection by simple local non-linearities within the collision operator—and the quantum lattice gas—an algorithm that is unconditionally stable and appropriate for a hybrid quantum-classical computer. [Copyright &y& Elsevier] AB - Copyright of Physics Letters A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETOHYDRODYNAMICS KW - LATTICE gas KW - Lattice Boltzmann KW - MHD turbulence KW - Quantum computer KW - Quantum lattice gas N1 - Accession Number: 8804299; Vahala, Linda 1 Vahala, George 2; Email Address: vahala@niv.physics.wm.edu Yepez, Jeffrey 3; Affiliation: 1: Department of Electrical & Computer Engineering, Old Dominion University, Norfolk, VA 23529, USA 2: Department of Physics, William & Mary, Williamsburg, VA 23185, USA 3: Air Force Research Laboratory, 29 Randolph Road, Hanscom Field, MA 01731, USA; Source Info: Jan2003, Vol. 306 Issue 4, p227; Subject Term: MAGNETOHYDRODYNAMICS; Subject Term: LATTICE gas; Author-Supplied Keyword: Lattice Boltzmann; Author-Supplied Keyword: MHD turbulence; Author-Supplied Keyword: Quantum computer; Author-Supplied Keyword: Quantum lattice gas; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8804299&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smart, D.F. AU - Shea, M.A. T1 - Comment on estimating the solar proton environment that may affect Mars missions JO - Advances in Space Research JF - Advances in Space Research Y1 - 2003/01// VL - 31 IS - 1 M3 - Article SP - 45 SN - 02731177 AB - Estimates of the energetic proton environment for a Mars mission are generally extrapolated from the solar proton observations at 1 AU. We find that solar particle events may be divided into two general classes. Events dominated by a near-sun injection of particles onto interplanetary magnetic field lines leading to the spacecraft position represent the “classical” solar particle event associated with solar activity. This class of event will scale in radial distance by the classical power law extrapolation. The extended-interplanetary-shock source generates a maximum flux as the shock passes the detection location. This class of event typically generates maximum fluence, but in this case, the flux and fluence will not scale in the classical manner with radial distance. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MAGNETIC fields KW - MARS (Planet) N1 - Accession Number: 9123618; Smart, D.F. 1 Shea, M.A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate (VSBX), Bedford, MA 01731, USA; Source Info: Jan2003, Vol. 31 Issue 1, p45; Subject Term: MAGNETIC fields; Subject Term: MARS (Planet); Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9123618&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shawn Powell AU - Kenneth Hagen AU - Thomas Korn T1 - Treating Pseudoseizures and Related Behaviors in an Adult Male With an Intractable Seizure Disorder. JO - Clinical Case Studies JF - Clinical Case Studies Y1 - 2003/01// VL - 2 IS - 1 M3 - Article SP - 79 EP - 90 SN - 15346501 AB - AD, a 42-year-old male diagnosed with an intractable seizure disorder, profound mental retardation, and numerous medical diagnoses, manifested pseudoseizures and related behaviors. To reduce the frequency of these behaviors, treatment procedures were developed and implemented. In conjunction with direct care staff members, target behaviors were identified and defined: pseudoseizures, falling, and sliding from chair. The behavioral treatment applied combined antecedent control and a progressive intervention approach using verbal cueing, visually checking, tactile attention, and edible reinforcement. Data collection occurred over an 18-month period. Results show an increase in the number of days occurring without charted behaviors within consecutive 28-day reporting periods. Data collection consisted of 7,068 observations of AD's behaviors. This allowed correlations to be conducted with significant correlations existing between pseudoseizures and falling (r = .59) and chair sliding and positive observations (r = -.63). t tests were computed resulting in significant differences between AD's target behaviors and pseudoseizures. [ABSTRACT FROM AUTHOR] AB - Copyright of Clinical Case Studies is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTRACTABLE pain KW - MENTAL disabilities N1 - Accession Number: 10039273; Shawn Powell 1 Kenneth Hagen 2 Thomas Korn 3; Affiliation: 1: United States Air Force Academy 2: Green Valley Education Agency 3: Private Practice; Source Info: Jan2003, Vol. 2 Issue 1, p79; Subject Term: INTRACTABLE pain; Subject Term: MENTAL disabilities; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10039273&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Midey, Anthony J. AU - Williams, Skip AU - Miller, Thomas M. AU - Viggiano, A.A. T1 - Reactions of O2+, NO+ and H3O+ with methylcyclohexane (C7H14) and cyclooctane (C8H16) from 298 to 700 K JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2003/01// VL - 222 IS - 1-3 M3 - Article SP - 413 SN - 13873806 AB - Rate constants and branching fractions have been measured as a function of temperature for the reactions of O2+, NO+ and H3O+ with methylcyclohexane (C7H14) and cyclooctane (C8H16) using fast flow tube methods. The reactions of O2+ with both cyclic molecules proceed via non-dissociative and dissociative charge transfer at the capture collision rate from 298 to 700 K. From 298 to 500 K, NO+ reacts with the two neutral reagents via non-dissociative hydride transfer, and from 500 to 700 K, an increasing fraction of the reaction products are due to dissociative hydride transfer. The rate constants for NO+ reacting with both C7H14 and C8H16 equal the capture collision rate constants at all temperatures. The H3O+ reactions proceed at ≤38% and ≤22% of the capture collision rate with C7H14 and C8H16, respectively. The rate constants display a negative temperature dependence with both reagents from 298 to 500 K. Reaction products observed in the H3O+ reactions include association, non-dissociative proton transfer and dissociative proton transfer. Increasing amounts of the dissociation products are observed at higher temperatures. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTON transfer reactions KW - CHARGE transfer KW - CYCLOALKANES KW - Charge transfer KW - Cycloalkanes KW - Dissociation KW - Hydride transfer KW - Kinetics KW - Proton transfer N1 - Accession Number: 8578478; Midey, Anthony J.; Email Address: anthony.midey@hanscom.af.mil Williams, Skip 1 Miller, Thomas M. Viggiano, A.A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom AFB, MA 01731-3010, USA; Source Info: Jan2003, Vol. 222 Issue 1-3, p413; Subject Term: PROTON transfer reactions; Subject Term: CHARGE transfer; Subject Term: CYCLOALKANES; Author-Supplied Keyword: Charge transfer; Author-Supplied Keyword: Cycloalkanes; Author-Supplied Keyword: Dissociation; Author-Supplied Keyword: Hydride transfer; Author-Supplied Keyword: Kinetics; Author-Supplied Keyword: Proton transfer; Number of Pages: 18p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8578478&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Buryachenko, V.A. AU - Pagano, N.J. AU - Kim, R.Y. AU - Spowart, J.E. T1 - Quantitative description and numerical simulation of random microstructures of composites and their effective elastic moduli JO - International Journal of Solids & Structures JF - International Journal of Solids & Structures Y1 - 2003/01// VL - 40 IS - 1 M3 - Article SP - 47 SN - 00207683 AB - A digital image processing technique is used for measurement of centroid coordinates of fibers with forthcoming estimation of statistical parameters and functions describing the stochastic structure of a real fiber composite. Comparative statistical analysis of the real and numerically simulated structure are performed. Accompanying of known methods of the generation of random configurations by the random shaking procedure allows creating of the most homogenized and mixed structures that do not depend on the initial protocol of particle generation. We consider a linearly elastic composite medium, which consists of a homogeneous matrix containing a statistically homogeneous set of ellipsoidal inclusions. The multiparticle effective field method (see for references, Buryachenko, Appl. Mech. Rev., (2001a), 54, 1–47) based on the theory of functions of random variables and Green’s functions is used for demonstration of the dependence of effective elastic moduli of fiber composites on the radial distribution functions estimated from the real experimental data as well as from the ensembles generated by the method proposed. [Copyright &y& Elsevier] AB - Copyright of International Journal of Solids & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIGITAL image processing KW - MICROSTRUCTURE KW - Elastic material KW - Inhomogeneous material KW - Microstructures N1 - Accession Number: 8574981; Buryachenko, V.A. 1; Email Address: buryach@aol.com Pagano, N.J. 2 Kim, R.Y. 1 Spowart, J.E. 3; Affiliation: 1: University of Dayton Research Institute, 300 College Park, Dayton, OH 45433-0168, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLBC, Wright-Patterson AFB, OH 45433-7750, USA 3: UES Incorporated, Dayton, OH 45433, USA; Source Info: Jan2003, Vol. 40 Issue 1, p47; Subject Term: DIGITAL image processing; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: Elastic material; Author-Supplied Keyword: Inhomogeneous material; Author-Supplied Keyword: Microstructures; Number of Pages: 26p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8574981&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hugo, Ronald J. AU - Nowlin, Scott R. AU - Hahn, Ila L. AU - Eaton, Frank D. AU - McCrae, Kim A. T1 - Application of an acoustic noise removal method to aircraftbased atmospheric temperature measurements. JO - Journal of the Acoustical Society of America JF - Journal of the Acoustical Society of America Y1 - 2003/01// VL - 113 IS - 1 M3 - Article SP - 178 EP - 184 SN - 00014966 AB - An acoustic noise removal method is used to reject engine acoustical disturbances from aircraft-based atmospheric temperature measurements. Removal of engine noise from atmospheric temperature measurements allows a larger wave number range to be fit while quantifying the magnitude of atmospheric temperature turbulence. The larger wave number range was found to result in a more statistically certain spectral slope estimate, with up to a 50% reduction in the standard deviation of measured spectral slopes. The noise removal technique was found to break down under conditions of weak atmospheric temperature turbulence where the engine acoustical disturbance can be several orders of magnitude larger than atmospheric temperature turbulence. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NOISE KW - SOUND KW - ATMOSPHERIC temperature KW - TEMPERATURE measurements KW - AIRPLANES KW - ATMOSPHERIC turbulence N1 - Accession Number: 20649135; Hugo, Ronald J. 1; Email Address: hugo@ucalgary.ca Nowlin, Scott R. 2 Hahn, Ila L. 2 Eaton, Frank D. 2 McCrae, Kim A. 2; Affiliation: 1: University of Calgary, Calgary, Alberta T2N 1N4, Canada 2: Air Force Research Laboratory/Directed Energy Directorate, Kirtland AFB, New Mexico 87117; Source Info: Jan2003, Vol. 113 Issue 1, p178; Subject Term: NOISE; Subject Term: SOUND; Subject Term: ATMOSPHERIC temperature; Subject Term: TEMPERATURE measurements; Subject Term: AIRPLANES; Subject Term: ATMOSPHERIC turbulence; NAICS/Industry Codes: 336410 Aerospace product and parts manufacturing; NAICS/Industry Codes: 336411 Aircraft Manufacturing; Number of Pages: 7p; Illustrations: 1 Chart, 12 Graphs; Document Type: Article L3 - 10.1121/1.1528591 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20649135&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Riddle, Dawn L. AU - Coovert, Michael D. AU - Elliott, Linda R. AU - Schiflett, Samuel G. T1 - Potential Contributions of Rough Sets Data Analysis to Training Evaluations. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2003/01// VL - 15 IS - 1 M3 - Article SP - 41 EP - 58 PB - Taylor & Francis Ltd SN - 08995605 AB - Effective training evaluation presents many challenges to the researcher and practitioner. We introduce rough sets theory and analysis as an analytic tool that can be employed to evaluate training systems effectively. The technique is especially helpful if any of the following situations exist in evaluating the training context: Data are discrete, relations among or between predictor and criterion variables are nonlinear, it is important to be able to determine the relative importance of predictor variables, or the concept describing the training criterion changes one or more times throughout the training pipeline. The technique is applied to data taken from a high-fidelity training simulator used by Air Force Airborne Warning and Control System (AWACS) teams. Both team- and position-level findings are presented. The discussion highlights the strengths and limitations of the approach. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRAINING KW - EVALUATION KW - ROUGH sets KW - AIRBORNE warning & control systems N1 - Accession Number: 9722196; Riddle, Dawn L. 1 Coovert, Michael D. 1 Elliott, Linda R. 2 Schiflett, Samuel G. 3; Affiliation: 1: Department of Psychology, University of South Florida 2: Veridian Engineering, San Antonio, Texas 3: Air Force Research Laboratory, Brooks Air Force Base, Texas; Source Info: Jan2003, Vol. 15 Issue 1, p41; Subject Term: TRAINING; Subject Term: EVALUATION; Subject Term: ROUGH sets; Subject Term: AIRBORNE warning & control systems; Number of Pages: 18p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9722196&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bennett, Winston AU - Alliger, George M. AU - Eddy, Erik R. AU - Tannenbaum, Scott I. T1 - Expanding the Training Evaluation Criterion Space: Cross Aircraft Convergence and Lessons Learned From Evaluation of the Air Force Mission Ready Technician Program. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2003/01// VL - 15 IS - 1 M3 - Article SP - 59 EP - 76 PB - Taylor & Francis Ltd SN - 08995605 AB - This study reports the analyses of data collected from an evaluation effort for 2 Mission Ready Technician (MRT) training programs for C-141 transport and F-16 fighter aircraft crew chiefs. We obtained ratings from over 100 trainees in each program, as well as from their trainers and supervisors, both during training and in the field via survey. The goal of this research was to explore the criterion space set up for this evaluation. Whereas past evaluation research has explored task difficulty, frequency, and importance, this research explores an expanded criterion space, including task confidence, task performance, task difficulty, and task frequency. Descriptive statistics, predictive regressions, and exploratory factor analyses are reported. We conclude that the data show a similar factor structure for both aircraft and that MRT frequency of task performance and confidence ratings are highly predictive of field performance. A major implication is that one way to optimize the effectiveness of training is to emphasize the development of trainee confidence at a relatively micro level, such as the task level. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRAINING KW - EVALUATION KW - FLIGHT crews N1 - Accession Number: 9722362; Bennett, Winston 1 Alliger, George M. 2 Eddy, Erik R. 2 Tannenbaum, Scott I. 3; Affiliation: 1: Human Effectiveness Directorate, Air Force Research Laboratory, Mesa, Arizona 2: The Group for Organizational Effectiveness, Albany, New York 3: The Group for Organizational Effectiveness. Albany, New York, and Department of Management. The University at Albany; Source Info: Jan2003, Vol. 15 Issue 1, p59; Subject Term: TRAINING; Subject Term: EVALUATION; Subject Term: FLIGHT crews; Number of Pages: 18p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9722362&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nullmeyer, Robert T. AU - Spiker, V. Alan T1 - The Importance of Crew Resource Management Behaviors in Mission Performance: Implications for Training Evaluation. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2003/01// VL - 15 IS - 1 M3 - Article SP - 77 EP - 96 PB - Taylor & Francis Ltd SN - 08995605 AB - Cockpit/crew resource management (CRM) training within the military has grown rapidly despite the paucity of empirical data linking CRM to mission performance. CRM training objectives (and course content) are often too vague to allow meaningful training evaluation within the context of traditional transfer-of-training paradigms. A multimeasure methodology that exploits all sources of archival and observational data within a training organization has the potential to advance training evaluation, particularly for crew-based skills such as CRM. This article discusses a variety of CRM data sources and presents findings using 2 of these sources: instructor comments in student training folders and over-the-shoulder observations of crews in tactical simulators. Instructor comments revealed that CRM problems early in training most frequently involve decision making and communication among crew members. Over-the-shoulder observations of experienced crews showed high correlations between independent ratings of CRM proficiency and mission performance. The most effective crews exhibited such characteristic CRM behaviors as the presence of a single leader and willingness to change plans based on changing mission situations. The article closes by describing how these study data can be used to restructure CRM training into a set of behavior-based objectives that will enable meaningful evaluation of its effectiveness in improving the performance levels of all student crews. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESOURCE management KW - MILITARY missions KW - FLIGHT crews KW - TRAINING N1 - Accession Number: 9722365; Nullmeyer, Robert T. 1 Spiker, V. Alan 2; Affiliation: 1: Aircrew Training Research Division, Air Force Research Laboratory, Mesa, Arizona 2: Anacapa Sciences, Santa Barbara, California; Source Info: Jan2003, Vol. 15 Issue 1, p77; Subject Term: RESOURCE management; Subject Term: MILITARY missions; Subject Term: FLIGHT crews; Subject Term: TRAINING; Number of Pages: 20p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9722365&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gurevich, A.V. AU - Zybin, K.P. AU - Carlson, H.C. AU - Pedersen, T. T1 - Magnetic zenith effect in ionospheric modifications JO - Physics Letters A JF - Physics Letters A Y1 - 2002/12/09/ VL - 305 IS - 5 M3 - Article SP - 264 SN - 03759601 AB - The theory of ionospheric modification for the beam of powerful radio emission directed along magnetic field lines is developed. Nonlinear process of beam self-focusing on striations is shown to determine strong amplification of heating and acceleration of plasma electrons. It results in a dramatic enhancement of optic emission from the magnetic zenith region in ionospheric F-layer. An excellent agreement between the theory and recent fundamental observations at HAARP facility (Alaska) [T. Pedersen et al., Geophys. Res. Lett. (2002), in press] is demonstrated. [Copyright &y& Elsevier] AB - Copyright of Physics Letters A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSPHERE KW - PLASMA electrodynamics N1 - Accession Number: 8577085; Gurevich, A.V. 1; Email Address: alex@lpi.ru Zybin, K.P. 1 Carlson, H.C. 2 Pedersen, T. 3; Affiliation: 1: P.N. Lebedev Institute of Physics, Russian Academy of Sciences, 117924 Moscow, Russia 2: Air Force Office of Scientific Research, Arlington, VA, USA 3: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA, USA; Source Info: Dec2002, Vol. 305 Issue 5, p264; Subject Term: IONOSPHERE; Subject Term: PLASMA electrodynamics; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8577085&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gertsbakh, Ilya AU - Frickenstein, Major Scott G. T1 - Reliability Theory with Applications to Preventive Maintenance (Book). JO - IIE Transactions JF - IIE Transactions Y1 - 2002/12// VL - 34 IS - 12 M3 - Book Review SP - 1111 PB - Taylor & Francis Ltd SN - 0740817X AB - Reviews the book "Reliability Theory with Applications to Preventive Maintenance," by IIya Gertshakh. KW - MAINTENANCE KW - RELIABILITY (Engineering) KW - NONFICTION KW - GERTSBAKH, Ilya KW - GERTSHAKH, Ilya KW - RELIABILITY Theory With Applications to Preventive Maintenance (Book) N1 - Accession Number: 7538511; Gertsbakh, Ilya Frickenstein, Major Scott G. 1; Email Address: scott.frickenstein@usafa.af.mil; Affiliation: 1: Department of Mathematical Sciences, 2354 Fairchild Drive Suite OD2A, US Air Force Academy, CO 800840-652, USA.; Source Info: Dec2002, Vol. 34 Issue 12, p1111; Subject Term: MAINTENANCE; Subject Term: RELIABILITY (Engineering); Subject Term: NONFICTION; Reviews & Products: RELIABILITY Theory With Applications to Preventive Maintenance (Book); People: GERTSBAKH, Ilya; People: GERTSHAKH, Ilya; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7538511&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hutson, A.L. AU - Niinomi, M. AU - Nicholas, T. AU - Eylon, D. T1 - Effect of various surface conditions on fretting fatigue behavior of Ti–6Al–4V JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2002/12// VL - 24 IS - 12 M3 - Article SP - 1223 SN - 01421123 AB - An experimental investigation was conducted to explore the fretting fatigue behavior of Ti–6Al–4V specimens in contact with varying pad surface conditions. Four conditions were selected: bare Ti–6Al–4V with a highly polished finish, bare Ti–6Al–4V that was low-stress ground and polished to RMS #8 (designated as ‘as-received’), bare Ti–6Al–4V that was grit blasted to RMS #64 (designated as ‘roughened’) and stress relieved, and Cu–Ni plasma spray coated Ti–6Al–4V. Behavior against the Cu–Ni coated and as-received pads were characterized through determination of a fretting fatigue limit stress for a 107 cycle fatigue life. In addition, the behavior against all four-pad conditions was evaluated with S-N fatigue testing, and the integrity of the Cu–Ni coating over repeated testing was assessed and compared with behavior of specimens tested against the as-received and roughened pads. The coefficient of friction, μ, was evaluated to help identify possible crack nucleation mechanisms and the contact pad surfaces were characterized through hardness and surface profile measurements.An increase in fretting fatigue strength of 20–25% was observed for specimens tested against Cu–Ni coated pads as compared to those tested against as-received pads. The experimental results from the S-N tests indicate that surface roughness of the coated pad was primarily responsible for the increased fretting fatigue capability. Another factor was determined to be the coefficient of friction, μ, which was identified as ~0.3 for the Cu–Ni coated pad against an as-received specimen and ~0.7 for the bare as-received Ti–6Al–4V. Specimens tested against the polished Ti–6Al–4V pads also performed better than the specimens tested against as-received pads. Fretting wear was minimal for all cases, and the Cu–Ni coating remained intact throughout repeated tests. The rougher surfaces got smoother during cycling, while the smoother surfaces got rougher. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys -- Fatigue KW - STRUCTURAL failures KW - FATIGUE KW - Fretting fatigue KW - High cycle fatigue KW - Surface roughness KW - Surface treatments KW - Titanium alloys N1 - Accession Number: 7872472; Hutson, A.L. 1; Email Address: alisha.hutson@wpafb.af.mil Niinomi, M. 2 Nicholas, T. 3 Eylon, D. 4; Affiliation: 1: Advanced Materials Characterization Group, Structural Integrity Division, University of Dayton Research Institute, 300 College Park, 45469-0128 Dayton, OH, USA 2: Department of Production Systems Engineering, Toyohashi University of Technology, 1-1, Hibarigaoka, Tempaku-cho, 441-8580 Toyohashi, Japan 3: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/MLLMN), Wright-Patterson Air Force Base, 45433-7817 Dayton, OH, USA 4: Graduate Materials Engineering, University of Dayton, 300 College Park 45469-0240 Dayton, OH, USA; Source Info: Dec2002, Vol. 24 Issue 12, p1223; Subject Term: TITANIUM alloys -- Fatigue; Subject Term: STRUCTURAL failures; Subject Term: FATIGUE; Author-Supplied Keyword: Fretting fatigue; Author-Supplied Keyword: High cycle fatigue; Author-Supplied Keyword: Surface roughness; Author-Supplied Keyword: Surface treatments; Author-Supplied Keyword: Titanium alloys; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7872472&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jin, O. AU - Mall, S. T1 - Influence of contact configuration on fretting fatigue behavior of Ti–6Al–4V under independent pad displacement condition JO - International Journal of Fatigue JF - International Journal of Fatigue Y1 - 2002/12// VL - 24 IS - 12 M3 - Article SP - 1243 SN - 01421123 AB - Fretting fatigue tests were conducted, using cylindrical pad and flat pad with rounded edges, at various applied pad displacements and at two normal forces on the pad under a constant bulk stress amplitude condition. The evolution of tangential force was independent of the contact configuration at a given normal force. The ratio of the tangential force to normal force increased and stabilized to a certain value with increasing applied pad displacement. The minimum fretting fatigue life was observed at the relative slip range between 50 and 60 μm and it was independent of both contact configuration and applied normal force. With increase in the applied pad displacement the response of the tangential force (Q) and the relative slip (δ) showed different fretting conditions, i.e. stick, stick-slip and gross slip. The gross slip condition was characterized by rectangular shape of the Q–δ curve with or without monotonically increasing value of Q with increasing fretting fatigue cycles. Surface profile on the fretting scar was affected by the contact configurations. For cylinder-on-flat contact, the profile showed surface damage (e.g. material loss or wear) along the entire contact area. However, the fretting damage in flat-on-flat (with rounded edges) contact was concentrated on the edge, not affecting much of the flat portion of the fretting scar. [Copyright &y& Elsevier] AB - Copyright of International Journal of Fatigue is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CONTACT mechanics KW - FATIGUE KW - STRUCTURAL analysis (Engineering) KW - Contact mechanics KW - Fretting fatigue KW - Fretting wear KW - Slip amplitude KW - Titanium alloy N1 - Accession Number: 7872474; Jin, O. 1 Mall, S. 2; Email Address: shankar.mall@afit.edu; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson Air Force Base, Bldg 640, 2950 P. Street, OH 45433-7765, USA 2: Materials and Manufacturing Directorate (AFRL/MLLMN), Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Dec2002, Vol. 24 Issue 12, p1243; Subject Term: CONTACT mechanics; Subject Term: FATIGUE; Subject Term: STRUCTURAL analysis (Engineering); Author-Supplied Keyword: Contact mechanics; Author-Supplied Keyword: Fretting fatigue; Author-Supplied Keyword: Fretting wear; Author-Supplied Keyword: Slip amplitude; Author-Supplied Keyword: Titanium alloy; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7872474&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Van Valkenburg, Michael E. AU - Annable, Michael D. T1 - Mobilization and entry of DNAPL pools into finer sand media by cosolvents: two-dimensional chamber studies JO - Journal of Contaminant Hydrology JF - Journal of Contaminant Hydrology Y1 - 2002/12// VL - 59 IS - 3/4 M3 - Article SP - 211 SN - 01697722 AB - Two-dimensional chamber studies were conducted to determine qualitative and quantitative performance of cosolvents targeted at pooled dense non-aqueous phase liquid (DNAPL) (perchlorethylene, PCE) residing above a fine-grain capillary barrier. Downward mobilization of DNAPL, up gradient along an overriding cosolvent front, was observed. This produced significant pooling above a fine-grain layer that in some cases lead to entry into the capillary barrier beneath. Entry pressure calculations using physical and hydrogeologic parameters provided an excellent prediction of breakthrough of DNAPL into the capillary barrier. Calculations predict approximately 0.5 m of DNAPL would be necessary to enter a Beit Netofa clay, under extreme cosolvent flooding conditions (100% ethanol). Gradient injection of cosolvent did not appear to provide any benefit suggesting a rapid decrease in interfacial tension (IFT) compared to the rate of DNAPL solubilization. Use of a partitioning alcohol (tertiary butyl alcohol, TBA) resulted in DNAPL swelling and reduced entry into the capillary barrier. However, the trapping of flushing solution, containing PCE, could potentially lead to longer remediation times. [Copyright &y& Elsevier] AB - Copyright of Journal of Contaminant Hydrology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DENSE nonaqueous phase liquids KW - TETRACHLOROETHYLENE KW - Cosolvent KW - DNAPL KW - Sand media N1 - Accession Number: 7787979; Van Valkenburg, Michael E. 1; Email Address: mike.vanvalkenburg@usafa.af.mil Annable, Michael D. 2; Affiliation: 1: Department of Chemistry, 2355 Fairchild Drive, Suite 2N225, United States Air Force Academy, Colorado Springs, CO 80840-6230, USA 2: Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL 32611, USA; Source Info: Dec2002, Vol. 59 Issue 3/4, p211; Subject Term: DENSE nonaqueous phase liquids; Subject Term: TETRACHLOROETHYLENE; Author-Supplied Keyword: Cosolvent; Author-Supplied Keyword: DNAPL; Author-Supplied Keyword: Sand media; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 20p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7787979&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Luo, B. AU - Mehandru, R.M. AU - Kim, Jihyun AU - Ren, F. AU - Gila, B.P. AU - Onstine, A.H. AU - Abernathy, C.R. AU - Pearton, S.J. AU - Fitch, R.C. AU - Gillespie, J. AU - Dellmer, R. AU - Jenkins, T. AU - Sewell, J. AU - Via, D. AU - Crespo, A. T1 - The role of cleaning conditions and epitaxial layer structure on reliability of Sc2O3 and MgO passivation on AlGaN/GaN HEMTS JO - Solid-State Electronics JF - Solid-State Electronics Y1 - 2002/12// VL - 46 IS - 12 M3 - Article SP - 2185 SN - 00381101 AB - The effect of layer structure (GaN versus AlGaN cap) and cleaning procedure prior to Sc2O3 or MgO deposition at 100 °C were examined for their effects on the long-term bias-stress stability of AlGaN/GaN high electron mobility transistors (HEMTs). Surface cleaning by itself was not sufficient to prevent current collapse in the devices. The forward and reverse gate leakage currents were decreased under most conditions upon deposition of the oxide passivation layers. After ≈13 h of bias-stressing, the MgO-passivated HEMTs retain ⩾90% their initial drain–source current. The Sc2O3-passivated devices retained ∼80% recovery of the current under the same conditions. [Copyright &y& Elsevier] AB - Copyright of Solid-State Electronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - MODULATION-doped field-effect transistors KW - Bias-Stressing test KW - GaN HEMT, Current dispersion KW - Gate lag measurement KW - Oxide passivation film N1 - Accession Number: 7915993; Luo, B. 1 Mehandru, R.M. 1 Kim, Jihyun 1 Ren, F. 1 Gila, B.P. 2 Onstine, A.H. 2 Abernathy, C.R. 2 Pearton, S.J. 2 Fitch, R.C. 3 Gillespie, J. 3 Dellmer, R. 3 Jenkins, T. 3 Sewell, J. 3 Via, D. 3 Crespo, A. 3; Affiliation: 1: Department of Chemical Engineering, University of Florida, Gainesville, FL 32611, USA 2: Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA 3: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH 45433-7322, USA; Source Info: Dec2002, Vol. 46 Issue 12, p2185; Subject Term: GALLIUM nitride; Subject Term: MODULATION-doped field-effect transistors; Author-Supplied Keyword: Bias-Stressing test; Author-Supplied Keyword: GaN HEMT, Current dispersion; Author-Supplied Keyword: Gate lag measurement; Author-Supplied Keyword: Oxide passivation film; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7915993&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ivasishin, O.M. AU - Semiatin, S.L. AU - Markovsky, P.E. AU - Shevchenko, S.V. AU - Ulshin, S.V. T1 - Grain growth and texture evolution in Ti–6Al–4V during beta annealing under continuous heating conditions JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2002/11/25/ VL - 337 IS - 1/2 M3 - Article SP - 88 SN - 09215093 AB - The kinetics of beta grain growth during continuous heating for two texturally-different, but microstructurally-equivalent, lots of Ti–6Al–4V material were determined using a direct-resistance-heating technique. Heating rates of 0.42, 5, 10, and 50 K s−1 were utilized. After reaching the peak temperature, a special cooling procedure was utilized to avoid complete decomposition of the beta phase during cool-down and thus enable direct determination of its texture at the end of high-temperature annealing. It was found that beta grain growth is strongly affected by texture whose evolution can give rise to a behavior which is discontinuous in nature. As a result, dramatic differences in grain-growth behavior were noted in the two lots of material and were explained in terms of variations in beta texture evolution during heat treatment. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - METAL crystals -- Growth KW - ANNEALING of metals KW - Annealing KW - Grain growth KW - Texture KW - Titanium N1 - Accession Number: 7855238; Ivasishin, O.M. 1; Email Address: ivas@imp.kiev.ua Semiatin, S.L. 2 Markovsky, P.E. 1 Shevchenko, S.V. 1 Ulshin, S.V. 1; Affiliation: 1: Institute for Metal Physics, 36 Vernadsky Street, 03142 Kiev, Ukraine 2: Air Force Research Laboratory, AFRL/MLLMP, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Nov2002, Vol. 337 Issue 1/2, p88; Subject Term: TITANIUM alloys; Subject Term: METAL crystals -- Growth; Subject Term: ANNEALING of metals; Author-Supplied Keyword: Annealing; Author-Supplied Keyword: Grain growth; Author-Supplied Keyword: Texture; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7855238&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pardon, M.-C. AU - Gould, G.G. AU - Garcia, A. AU - Phillips, L. AU - Cook, M.C. AU - Miller, S.A. AU - Mason, P.A. AU - Morilak, D.A. T1 - Stress reactivity of the brain noradrenergic system in three rat strains differing in their neuroendocrine and behavioral responses to stress: implications for susceptibility to stress-related neuropsychiatric disorders JO - Neuroscience JF - Neuroscience Y1 - 2002/11/15/ VL - 115 IS - 1 M3 - Article SP - 229 SN - 03064522 AB - The brain noradrenergic system is activated by stress, modulating the activity of forebrain regions involved in behavioral and neuroendocrine responses to stress. In this study, we characterized brain noradrenergic reactivity to acute immobilization stress in three rat strains that differ in their neuroendocrine stress response: the inbred Lewis (Lew) and Wistar–Kyoto (WKY) rats, and outbred Sprague–Dawley (SD) rats. Noradrenergic reactivity was assessed by measuring tyrosine hydroxylase mRNA expression in locus coeruleus, and norepinephrine release in the lateral bed nucleus of the stria terminalis. Behavioral measures of arousal and acute stress responsivity included locomotion in a novel environment, fear-potentiated startle, and stress-induced reductions in social interaction and open-arm exploration on the elevated-plus maze. Neuroendocrine responses were assessed by plasma adrenocorticotropic hormone. Compared to SD, adrenocorticotropic hormone responses of Lew rats were blunted, whereas those of WKY were enhanced. The behavioral effects of stress were similar in Lew and SD rats, despite baseline differences. Lew had similar elevations of tyrosine hydroxylase mRNA, and initially greater norepinephrine release in the lateral bed nucleus of the stria terminalis during stress, although both noradrenergic responses returned toward baseline more rapidly than in SD rats. WKY rats showed depressed baseline startle and lower baseline exploratory and social behavior than SD. However, unlike the Lew or SD rats, WKY exhibited a lack both of fear potentiation of the startle response and of stress-induced reductions in exploratory and social behavior, indicating attenuated stress responsivity. Acute noradrenergic reactivity to stress, measured by either tyrosine hydroxylase mRNA levels or norepinephrine release, was also attenuated in WKY rats. Thus, reduced arousal and behavioral responsivity in WKY rats may be related to deficient brain noradrenergic reactivity. This deficit may alter their ability to cope with stress, resulting in the exaggerated neuroendocrine responses and increased susceptibility to stress-related pathology exhibited by this strain. [Copyright &y& Elsevier] AB - Copyright of Neuroscience is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NORADRENERGIC mechanisms KW - NEUROENDOCRINOLOGY KW - STRESS (Psychology) KW - ACTH, adrenocorticotropic hormone KW - ANOVA, analysis of variance KW - BST, bed nucleus of the stria terminalis KW - BSTL, bed nucleus of the stria terminalis, lateral division KW - CON, no-shock control group KW - CRH, corticotropin-releasing hormone KW - EDTA, ethylenediaminetetra-acetate KW - FC, fear-conditioned group KW - HPA, hypothalamic–pituitary–adrenal KW - ISI, interstimulus interval KW - LC, locus coeruleus KW - Lew, Lewis KW - NE, norepinephrine KW - PTSD, post-traumatic stress disorder KW - PVN, paraventricular nucleus of the hypothalamus KW - RS, random-shock control group KW - SD, Sprague–Dawley KW - SSC, saline sodium citrate KW - TH, tyrosine hydroxylase KW - WKY, Wistar–Kyoto N1 - Accession Number: 7905142; Pardon, M.-C. 1 Gould, G.G. 1 Garcia, A. 1 Phillips, L. 1 Cook, M.C. 2 Miller, S.A. 3 Mason, P.A. 3 Morilak, D.A. 1; Email Address: morilak@uthscsa.edu; Affiliation: 1: Department of Pharmacology and Center for Biomedical Neuroscience, University of Texas Health Science Center at San Antonio, MC 7764, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900, USA 2: Veridian Engineering, Inc., San Antonio, TX, USA 3: Air Force Research Laboratory, Human Effectiveness Directorate, Directed Energy Bioeffects Division, Brooks Air Force Base, San Antonio, TX 78235, USA; Source Info: Nov2002, Vol. 115 Issue 1, p229; Subject Term: NORADRENERGIC mechanisms; Subject Term: NEUROENDOCRINOLOGY; Subject Term: STRESS (Psychology); Author-Supplied Keyword: ACTH, adrenocorticotropic hormone; Author-Supplied Keyword: ANOVA, analysis of variance; Author-Supplied Keyword: BST, bed nucleus of the stria terminalis; Author-Supplied Keyword: BSTL, bed nucleus of the stria terminalis, lateral division; Author-Supplied Keyword: CON, no-shock control group; Author-Supplied Keyword: CRH, corticotropin-releasing hormone; Author-Supplied Keyword: EDTA, ethylenediaminetetra-acetate; Author-Supplied Keyword: FC, fear-conditioned group; Author-Supplied Keyword: HPA, hypothalamic–pituitary–adrenal; Author-Supplied Keyword: ISI, interstimulus interval; Author-Supplied Keyword: LC, locus coeruleus; Author-Supplied Keyword: Lew, Lewis; Author-Supplied Keyword: NE, norepinephrine; Author-Supplied Keyword: PTSD, post-traumatic stress disorder; Author-Supplied Keyword: PVN, paraventricular nucleus of the hypothalamus; Author-Supplied Keyword: RS, random-shock control group; Author-Supplied Keyword: SD, Sprague–Dawley; Author-Supplied Keyword: SSC, saline sodium citrate; Author-Supplied Keyword: TH, tyrosine hydroxylase; Author-Supplied Keyword: WKY, Wistar–Kyoto; Number of Pages: 14p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7905142&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lee, J.-C. AU - Lim, M.-Y. AU - Oh, K. AU - Kim, Y.G. AU - Lee, H.B. AU - Park, S.-Y. AU - Farmer, B.L. T1 - Synthesis and mesomorphic properties of poly(oxyethylene)s containing alkylsulfonylmethyl or alkylthiomethyl side groups JO - Polymer JF - Polymer Y1 - 2002/11/15/ VL - 43 IS - 25 M3 - Article SP - 7051 SN - 00323861 AB - (n-Hexadecylsulfonyl)methyl-substituted poly(oxyethylene) (16SP), (n-hexadecylthio)methyl-substituted poly(oxyethylene) (16TP), [(6-n-nonylsulfonyl)hexylthio]methyl-substituted poly(oxyethylene) (9S6TP), and [(6-n-nonylsulfonyl)hexylsulfonyl]methyl-substituted poly(oxyethylene) (9S6SP) were synthesized. 9S6SP and 16SP containing sulfonylmethyl side groups showed highly ordered smectic layer structures at room temperature and liquid crystalline behavior at higher temperatures, while 9S6TP and 16TP containing thiomethyl side groups did not show any liquid crystalline behavior. The ordered phases of the polymers were studied using differential scanning calorimetry, cross-polarizing optical microscopy, and X-ray diffraction. The unusual liquid crystallinity of 16SP and 9S6SP was ascribed to the amphiphilic character of these polymers. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMER liquid crystals KW - POLYMERIZATION KW - POLYETHYLENE glycol KW - Liquid crystalline polymer KW - Poly(oxyethylene) KW - Side chain crystallization N1 - Accession Number: 8783058; Lee, J.-C. 1; Email Address: jongchan@snu.ac.kr Lim, M.-Y. 1 Oh, K. 1 Kim, Y.G. 1 Lee, H.B. 1 Park, S.-Y. 2 Farmer, B.L. 3; Affiliation: 1: School of Chemical Engineering, Seoul National University, Seoul 151-744, South Korea 2: Department of Polymer Science, Kyungpook University, Daegu 702-701, South Korea 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7750, USA; Source Info: Nov2002, Vol. 43 Issue 25, p7051; Subject Term: POLYMER liquid crystals; Subject Term: POLYMERIZATION; Subject Term: POLYETHYLENE glycol; Author-Supplied Keyword: Liquid crystalline polymer; Author-Supplied Keyword: Poly(oxyethylene); Author-Supplied Keyword: Side chain crystallization; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8783058&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Price, Stephan D. AU - Carey, Sean J. AU - Egan, Michael P. T1 - The MSX galactic plane survey submillimeter results JO - Advances in Space Research JF - Advances in Space Research Y1 - 2002/11// VL - 30 IS - 9 M3 - Article SP - 2027 SN - 02731177 AB - The Midcourse Space Experiment (MSX) surveyed the Galactic plane within 5° latitude in four mid-infrared spectral bands. A set of full resolution (20″) 1.5°×1.5° images on 6″ pixel centers has been created in each spectral band by co-adding all the survey data. A lower (1.2′) resolution atlas of 10°×10° images provide large-scale panoramas of the plane. Both sets of images are valuable resources for identifying interesting objects for further study at other wavelengths. The low-resolution maps are ideally suited for comparison with molecular line surveys and one such comparison probes the star formation rate in the inner Galaxy. A new class of objects has been identified in the images, infrared dark clouds, which are silhouetted against the mid-infrared background emission from the interstellar medium in the Galactic plane. These clouds are dark out to 100 μm as evinced on the IRAS IRSA plates. Submillimeter emission traces the form of the dark cloud and reveals cores indicative of class 0 protostars. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR system KW - ARTIFICIAL satellites N1 - Accession Number: 8762074; Price, Stephan D. 1 Carey, Sean J. 2 Egan, Michael P. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 29 Randolph Road, Hanscom AFB, Bedford, MA 01731, USA 2: Boston College, Institute for Scientific Research, 140 Commonwealth Avenue, Chestnut Hill, MA 02167, USA; Source Info: Nov2002, Vol. 30 Issue 9, p2027; Subject Term: SOLAR system; Subject Term: ARTIFICIAL satellites; NAICS/Industry Codes: 927110 Space Research and Technology; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8762074&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - McCartney, L.N. AU - Schoeppner, G.A. T1 - Predicting the effect of non-uniform ply cracking on the thermoelastic properties of cross-ply laminates JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2002/11// VL - 62 IS - 14 M3 - Article SP - 1841 SN - 02663538 AB - When damage in the form of ply cracks in laminated composites arises during loading, the cracks are in general non-uniformly spaced due to property and geometrical inhomogeneities in the laminate. The objective of this paper is to establish the validity of an approximation that can be made when analysing the stress and displacement distributions in multiple-ply cross-ply laminates having arrays of non-uniformly spaced ply cracks. The approximation assumes that the stress and displacement distributions in the region between the planes containing neighbouring ply cracks are the same as those arising in an identical laminate having uniformly spaced ply cracks of the same separation. The validity of this approach is established by comparing predictions of the thermo-elastic constants of the cracked laminates generated by two distinct stress-transfer models. The first model, that generates the approximations for non-uniform ply crack spacings, is based on a stress-transfer analysis that was specifically developed for uniformly spaced ply cracks while the second model accurately takes account of the effects of the non-uniformity of ply crack spacing on the stress distribution. It is shown, following a comprehensive analysis of various laminate types and crack patterns for both carbon fibre and glass fibre systems, that the approximation suggested provides highly accurate predictions of effective thermo-elastic constants over a wide range of laminate parameter variations. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANISOTROPY KW - CONTINUUM damage mechanics KW - C. Anisotropy KW - C. Damage mechanics KW - C. Elastic properties KW - C. Laminates KW - C. Transverse cracking N1 - Accession Number: 7867932; McCartney, L.N. 1; Email Address: neil.mccartney@npl.co.uk Schoeppner, G.A. 2; Affiliation: 1: NPL Materials Centre, National Physical Laboratory, Teddington, Middx, TW11 0LW, UK 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, OH 45433, USA; Source Info: Nov2002, Vol. 62 Issue 14, p1841; Subject Term: ANISOTROPY; Subject Term: CONTINUUM damage mechanics; Author-Supplied Keyword: C. Anisotropy; Author-Supplied Keyword: C. Damage mechanics; Author-Supplied Keyword: C. Elastic properties; Author-Supplied Keyword: C. Laminates; Author-Supplied Keyword: C. Transverse cracking; Number of Pages: 16p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7867932&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bennett Jr., Winston AU - Schreiber, Brian T. AU - Andrews, Dee H. T1 - Developing competency-based methods for near-real-time air combat problem solving assessment☆☆The views expressed in this paper are those of the authors and do not necessarily reflect an official position of the organization with which they are affiliated. JO - Computers in Human Behavior JF - Computers in Human Behavior Y1 - 2002/11// VL - 18 IS - 6 M3 - Article SP - 773 SN - 07475632 AB - Air combat scenarios present unique problems where the solution is not obvious. An advanced networked simulation environment can be used to train high-level cognitive air combat skills such as problem solving. A problem in the development of principled and construct oriented assessment is related to determining the level of specificity of the assessment. We present a detailed discussion of the definition of critical competencies associated with combat mission problem solving performance, and we describe our approach to develop and implement an embedded performance assessment system that maps outcomes to these competencies. Finally, we discuss the implications for our approach for comprehensive assessment and discuss our goals for an evaluation of the competency-based approach to assessment. [Copyright &y& Elsevier] AB - Copyright of Computers in Human Behavior is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROBLEM solving KW - PERFORMANCE KW - COMPUTER simulation N1 - Accession Number: 7879712; Bennett Jr., Winston Schreiber, Brian T. 1 Andrews, Dee H. 1; Affiliation: 1: Air Force Research Laboratory, Warfighter Training Research Division, 6030 South Kent Street, Mesa, AZ 85212-6061, USA; Source Info: Nov2002, Vol. 18 Issue 6, p773; Subject Term: PROBLEM solving; Subject Term: PERFORMANCE; Subject Term: COMPUTER simulation; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7879712&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chu, T. AU - Mahajan, A. AU - Liu, C. T. T1 - AN ECONOMICAL VISION-BASED METHOD TO OBTAIN WHOLE-FIELD DEFORMATION PROFILES. JO - Experimental Techniques JF - Experimental Techniques Y1 - 2002/11//Nov/Dec2002 VL - 26 IS - 6 M3 - Article SP - 25 EP - 28 SN - 07328818 AB - Reports the results of using digital image correlation to obtain surface deformation profiles. Application of digital image correlation method in aircraft, spacecraft, solid fuels and civil infrastructures; Form of the two image data sets being used in the image correlation method; Information on the genetic algorithm developed for the digital image correlation problem; Percentage of maximum strain; Aspect ratio for the pixels on the digitized image. KW - DIGITAL images KW - CORRELATION (Statistics) KW - DEFORMATIONS (Mechanics) KW - GENETIC algorithms KW - STRAINS & stresses (Mechanics) N1 - Accession Number: 15455852; Chu, T. 1 Mahajan, A. 1 Liu, C. T. 2; Affiliation: 1: (SEM Member) is with the Department of Mechanical Engineering, Southern Illinois University, Carbondale, IL 2: Air Force Research Laboratory, AFRL/PRSM, Edwards AFB, CA; Source Info: Nov/Dec2002, Vol. 26 Issue 6, p25; Subject Term: DIGITAL images; Subject Term: CORRELATION (Statistics); Subject Term: DEFORMATIONS (Mechanics); Subject Term: GENETIC algorithms; Subject Term: STRAINS & stresses (Mechanics); Number of Pages: 4p; Illustrations: 8 Black and White Photographs, 1 Diagram; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15455852&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brautigam, D.H. T1 - CRRES in review: space weather and its effects on technology JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2002/11// VL - 64 IS - 16 M3 - Article SP - 1709 SN - 13646826 AB - The Combined Release and Radiation Effects Satellite (CRRES) was a unique mission which has provided valuable lessons about the space radiation environment and its effects on technological systems in space. The tremendous value of CRRES resides in the fact that it flew not only the technologies to be space-tested, but also an extensive suite of instruments to accurately specify the damage-causing radiation environment. CRRES was launched into a geosynchronous transfer orbit on July 25, 1990, 1 yr following the maximum of solar cycle 22, and returned data for approximately 14 months. It was first exposed to 8 months of a relatively quiet magnetosphere, followed by a very active 6 month interval initiated by the much documented March 1991 storm. This large magnetic storm, accompanied by a solar proton event, was responsible for creating a temporary proton and electron belt within the typically benign slot region. The dynamic radiation environment was responsible for a number of observable total dose effects, charging/discharging phenomena, single event effects, and assorted anomalies within the spacecraft instrumentation and technology tested. This exceptional combination of technologies, instrumentation, and dynamic radiation environment will be reviewed, with attention given to lessons learned and how CRRES has changed our perspective on magnetospheric radiation hazards. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ASTROPHYSICAL radiation KW - SPACE environment KW - CRRES KW - Radiation belts KW - Radiation effects on electronics KW - Radiation environment N1 - Accession Number: 8779390; Brautigam, D.H. 1; Email Address: donald.brautigam@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, MA 01731, USA; Source Info: Nov2002, Vol. 64 Issue 16, p1709; Subject Term: ASTROPHYSICAL radiation; Subject Term: SPACE environment; Author-Supplied Keyword: CRRES; Author-Supplied Keyword: Radiation belts; Author-Supplied Keyword: Radiation effects on electronics; Author-Supplied Keyword: Radiation environment; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8779390&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Basu, S. AU - Groves, K.M. AU - Basu, Su. AU - Sultan, P.J. T1 - Specification and forecasting of scintillations in communication/navigation links: current status and future plans JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2002/11// VL - 64 IS - 16 M3 - Article SP - 1745 SN - 13646826 AB - The ionosphere often becomes turbulent and develops electron density irregularities. These irregularities scatter radio waves to cause amplitude and phase scintillation and affect satellite communication and GPS navigation systems. The effects are most intense in the equatorial region, moderate at high latitudes and minimum at middle latitudes. The thermosphere and the ionosphere seem to internally control the generation of irregularities in the equatorial region and its forcing by solar transients is an additional modulating factor. On the other hand, the irregularity generation mechanisms in the high-latitude ionosphere seem to be driven by magnetospheric processes and, therefore, high-latitude scintillations can be tracked by following the trail of energy from the sun in the form of solar flares and coronal mass ejections. The development of a global specification and forecast system for scintillation is needed in view of our increased reliance on space-based communication and navigation systems, which are vulnerable to ionospheric scintillation. Such scintillation specification systems are being developed for the equatorial region. An equatorial satellite equipped with an appropriate suite of sensors, capable of detecting ionospheric irregularities and tracking the drivers that control the formation of ionospheric irregularities, has also been planned for the purpose of specifying and forecasting equatorial scintillations. In the polar region, scintillation specification and forecast systems are yet to emerge although modeling and observations of polar cap plasma structures, their convection and associated irregularities have advanced greatly in recent years. Global scintillation observations made during the S-RAMP Space Weather Month in September 1999 are currently being analyzed to study the effects of magnetic storms on communication and navigation systems. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - IONOSPHERE KW - ELECTRON distribution KW - Ionosphere KW - Irregularities KW - Polar and equatorial region KW - Scintillation KW - Specification and forecasting N1 - Accession Number: 8779393; Basu, S. 1; Email Address: santimay@aol.com Groves, K.M. 1 Basu, Su. 2 Sultan, P.J. 1; Affiliation: 1: Air Force Research Laboratory, VSBI, 29 Randolph Road, Hanscom AFB, MA 01731, USA 2: Atmospheric Sciences Division, National Science Foundation, 4201 Wilson Boulevard, VA 22230, USA; Source Info: Nov2002, Vol. 64 Issue 16, p1745; Subject Term: IONOSPHERE; Subject Term: ELECTRON distribution; Author-Supplied Keyword: Ionosphere; Author-Supplied Keyword: Irregularities; Author-Supplied Keyword: Polar and equatorial region; Author-Supplied Keyword: Scintillation; Author-Supplied Keyword: Specification and forecasting; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8779393&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Menon, V.M. AU - Ram-Mohan, L.R. AU - Goodhue, W.D. AU - Karakashian, A.S. AU - Naweed, A. AU - Gatesman, A. AU - Waldman, J. T1 - Phonon engineered quantum cascade terahertz emission JO - Physica E JF - Physica E Y1 - 2002/11// VL - 15 IS - 3 M3 - Article SP - 197 SN - 13869477 AB - The observation of terahertz (THz) intersubband emission from GaAs/AlGaAs quantum cascade structures employing higher energy interface and barrier confined AlAs-like phonons for depopulation is reported. Emission is observed at 12.0 meV (2.9 THz) and 17.5 meV (4.2 THz) with full-width at half-maximum of 0.7 and 1.6 meV, respectively, at T=10 K from two different structures. The structures consisted of 40 periods of the quantum cascade module and relied on spatially diagonal (interwell) transition for the terahertz emission. The possibility of tuning the emission frequency using quantum confined Stark effect is also demonstrated. [Copyright &y& Elsevier] AB - Copyright of Physica E is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHONONS KW - ARSENIDES KW - Interface phonons KW - Intersubband KW - Quantum cascade KW - Terahertz N1 - Accession Number: 7878865; Menon, V.M. 1; Email Address: vmenon@princeton.edu Ram-Mohan, L.R. 2 Goodhue, W.D. 1 Karakashian, A.S. 1 Naweed, A. 1 Gatesman, A. 3 Waldman, J. 3; Affiliation: 1: Photonics Center and Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, MA 01854, USA 2: Air Force Research Laboratory, Sensors Directorate, Wright Patterson Air Force Base, OH 45433, USA 3: Submillimeter Wave Technology Laboratory, University of Massachusetts Lowell, Lowell, MA 01854, USA; Source Info: Nov2002, Vol. 15 Issue 3, p197; Subject Term: PHONONS; Subject Term: ARSENIDES; Author-Supplied Keyword: Interface phonons; Author-Supplied Keyword: Intersubband; Author-Supplied Keyword: Quantum cascade; Author-Supplied Keyword: Terahertz; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7878865&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Christe, Karl O. AU - Gerken, Michael AU - Haiges, Ralf AU - Schneider, Stefan AU - Schroer, Thorsten AU - Tham, Fook S. AU - Vij, Ashwani T1 - Tritylsulfinylamine: a new member in the family of sulfinylamines JO - Solid State Sciences JF - Solid State Sciences Y1 - 2002/11// VL - 4 IS - 11/12 M3 - Article SP - 1529 SN - 12932558 AB - Triphenylmethyl N-sulfinylamine (trityl-NSO) was prepared from the reaction of tritylamine and SOCl2. Trityl-NSO was characterized by 1H, 13C, and 14N NMR spectroscopy in CH2Cl2 solution and by Raman and infrared spectroscopy in the solid state. Crystals of trityl-NSO were grown from n-heptane and characterized by single crystal X-ray diffraction (P1¯, a=8.9642(9) A˚, b=9.2135(9) A˚, c=11.0645(11) A˚, α=93.578(2)°, β=101.098(2)°, γ=118.142°, Z=2, and Rint=0.0332 at 223 K). Trityl-NSO represents the first alkyl N-sulfinylamine that has been fully structurally characterized. [Copyright &y& Elsevier] AB - Copyright of Solid State Sciences is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SPECTRUM analysis KW - INFRARED spectroscopy KW - X-ray diffraction KW - Crystal structure KW - NMR spectroscopy KW - Triphenylmethylsulfinylamine KW - Vibrational spectroscopy N1 - Accession Number: 8666636; Christe, Karl O. 1,2; Email Address: karl.christe@edwards.af.mil Gerken, Michael 1 Haiges, Ralf 1 Schneider, Stefan 1 Schroer, Thorsten 1 Tham, Fook S. 3 Vij, Ashwani 2; Affiliation: 1: Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA 2: Propulsion Sciences and Advanced Concepts Division, Air Force Research Laboratory (AFRL/PRS), Edwards AFB, CA 93524, USA 3: University of California, Riverside, CA 92521, USA; Source Info: Nov2002, Vol. 4 Issue 11/12, p1529; Subject Term: SPECTRUM analysis; Subject Term: INFRARED spectroscopy; Subject Term: X-ray diffraction; Author-Supplied Keyword: Crystal structure; Author-Supplied Keyword: NMR spectroscopy; Author-Supplied Keyword: Triphenylmethylsulfinylamine; Author-Supplied Keyword: Vibrational spectroscopy; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8666636&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gordon, Steven J. AU - Brady, Patrick V. T1 - In situ determination of long-term basaltic glass dissolution in the unsaturated zone JO - Chemical Geology JF - Chemical Geology Y1 - 2002/10/30/ VL - 190 IS - 1-4 M3 - Article SP - 113 SN - 00092541 AB - Maximum in situ weathering rates of basaltic glass measured at the El Malpais National Monument in New Mexico are on the order of 2–5×10−19 mol/cm2 s. Rates were calculated from backscattered electron (BSE) imaging of weathered porosity and are equivalent to 1.7–5% of the surface per 1000 years. Weathering is independent of glass composition but appears to increase with flow elevation at El Malpais. Measured rates represent weathering over 3000 years and are substantially lower than glass dissolution rates measured in the laboratory over much shorter time spans. Basaltic glass is a close chemical analogue to glass hosts proposed for encapsulation of high-level nuclear wastes. Radionuclide release rates predicted from the basis of in situ field rates are substantially less than those predicted from short-term laboratory experiments. [Copyright &y& Elsevier] AB - Copyright of Chemical Geology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WEATHERING KW - POROSITY KW - BACKSCATTERING KW - Basaltic glass KW - El Malpais KW - Porosity KW - Weathering N1 - Accession Number: 7787930; Gordon, Steven J. 1; Email Address: steve.gordon@usafa.af.mil Brady, Patrick V. 2; Email Address: pvbrady@sandia.gov; Affiliation: 1: Department of Economics and Geography, United States Air Force Academy, HQ USAFA/DFEG, 2354 Fairchild Dr., Suite 6K110, USAF Academy, CO 80840-6299, USA 2: Geochemistry Department, Sandia National Laboratories, Albuquerque, NM 87185-0750, USA; Source Info: Oct2002, Vol. 190 Issue 1-4, p113; Subject Term: WEATHERING; Subject Term: POROSITY; Subject Term: BACKSCATTERING; Author-Supplied Keyword: Basaltic glass; Author-Supplied Keyword: El Malpais; Author-Supplied Keyword: Porosity; Author-Supplied Keyword: Weathering; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7787930&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cobb, Coleman B. AU - Barnes, Paul N. AU - Haugan, Timothy J. AU - Tolliver, Justin AU - Lee, Eungkuk AU - Sumption, Michael AU - Collings, Edward AU - Oberly, Charles E. T1 - Hysteretic loss reduction in striated YBCO JO - Physica C JF - Physica C Y1 - 2002/10/15/ VL - 382 IS - 1 M3 - Article SP - 52 SN - 09214534 AB - Magnetization vs. applied field measurements (M–H loops) were taken on short samples of YBa2Cu3O7−δ (YBCO) thin films which were divided into narrow filaments. The YBCO was deposited using pulsed laser deposition onto single-crystal LaAlO3 substrates, with a range of film thicknesses from 0.25 to 0.33 μm. Using a YAG laser, the thin films were patterned into linear striations by removing strips of the superconductor by laser ablation. The resulting striated filamentary structure serves to reduce the effective width of the YBCO films and hence the hysteresis loss in the superconducting samples. The magnetization measurements were taken over the temperature range of 4.2–77 K in applied fields of 0–17 kOe using a vibrating sample magnetometer. The measured hysteresis losses show a highly linear relationship between superconductor filament width and hysteresis loss as anticipated. However, the laser ablation process did result in the redeposition of YBCO along the edges of individual filaments. Degradation of Tc and Jc due to the ablation process is discussed. [Copyright &y& Elsevier] AB - Copyright of Physica C is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SUPERCONDUCTORS KW - MAGNETIC fields KW - PULSED laser deposition KW - ac Magnetic loss KW - Striated pattern KW - YBCO coated conductor N1 - Accession Number: 7891120; Cobb, Coleman B. 1; Email Address: coleman.cobb@wpafb.af.mil Barnes, Paul N. 1 Haugan, Timothy J. 1 Tolliver, Justin 1 Lee, Eungkuk 2 Sumption, Michael 2 Collings, Edward 2 Oberly, Charles E. 1; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, 2645 Fifth St., Ste. 13, Wright-Patterson AFB, OH 45433-7919, USA 2: Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA; Source Info: Oct2002, Vol. 382 Issue 1, p52; Subject Term: SUPERCONDUCTORS; Subject Term: MAGNETIC fields; Subject Term: PULSED laser deposition; Author-Supplied Keyword: ac Magnetic loss; Author-Supplied Keyword: Striated pattern; Author-Supplied Keyword: YBCO coated conductor; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7891120&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - NAMJOSHI, S. A. AU - MALL, S. AU - JAIN, V. K. AU - JIN, O. T1 - Fretting fatigue crack initiation mechanism in Ti–6Al–4V. JO - Fatigue & Fracture of Engineering Materials & Structures JF - Fatigue & Fracture of Engineering Materials & Structures Y1 - 2002/10// VL - 25 IS - 10 M3 - Article SP - 955 EP - 964 PB - Wiley-Blackwell SN - 8756758X AB - ABSTRACT Fretting fatigue crack initiation in titanium alloy, Ti-6Al-4V, was investigated experimentally and analytically by using finite element analysis (FEA). Various types of fretting pads were used in order to determine the effects of contact geometries. Crack initiation location and crack angle orientation along the contact surface were determined by using microscopy. Finite element analysis was used in order to obtain stress state for the experimental conditions used during fretting fatigue tests. These were then used in order to investigate several critical plane based multiaxial fatigue parameters. These parameters were evaluated based on their ability to predict crack initiation location, crack orientation angle along the contact surface and the number of cycles to fretting fatigue crack initiation independent of geometry of fretting pad. These predictions were compared with their experimental counterparts in order to characterize the role of normal and shear stresses on fretting fatigue crack initiation. From these comparisons, fretting fatigue crack initiation mechanism in the tested titanium alloy appears to be governed by shear stress on the critical plane. However, normal stress on the critical plane also seems to play a role in fretting fatigue life. At present, the individual contributions/importance of shear and normal stresses in the crack initiation appears to be unclear; however, it is clear that any critical plane describing fretting fatigue crack initiation behaviour independent of geometry needs to include components of both shear and normal stresses. [ABSTRACT FROM AUTHOR] AB - Copyright of Fatigue & Fracture of Engineering Materials & Structures is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Fatigue KW - FRACTURE mechanics KW - FINITE element method N1 - Accession Number: 7344970; NAMJOSHI, S. A. 1 MALL, S. 2 JAIN, V. K. 3 JIN, O. 4; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology (AFIT/ENY), Wright-Patterson Air Force Base, OH 45433-7765, USA, 2: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/MLLMN), Wright Patterson Air Force Base, OH 45433-7817, USA, 3: Mechanical and Aerospace Engineering Department, University of Dayton, Dayton, OH 45469-0210, USA, 4: Department of Aeronautics and Astronautics, Air Force Institute of Technology (AFIT/ENY), Wright-Patterson Air Force Base, OH 45433-7765, USA; Source Info: Oct2002, Vol. 25 Issue 10, p955; Subject Term: MATERIALS -- Fatigue; Subject Term: FRACTURE mechanics; Subject Term: FINITE element method; Number of Pages: 10p; Document Type: Article L3 - 10.1046/j.1460-2695.2002.00549.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7344970&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Stewart, II, John E. AU - Dohme, John A. AU - Nullmeyer, Robert T. T1 - U.S. Army Initial Entry Rotary-Wing Transfer of Training Research. JO - International Journal of Aviation Psychology JF - International Journal of Aviation Psychology Y1 - 2002/10// VL - 12 IS - 4 M3 - Article SP - 359 EP - 375 PB - Taylor & Francis Ltd SN - 10508414 AB - Early fixed-wing research demonstrated that potential cost and training benefits could be derived from simulation-augmented primary flight training. More recent research in this area has been the exception, not the rule. This is especially true for rotary-wing aircrew training research. Currently, the U.S. Army does not use simulation in the primary (contact) phase of initial entry rotary-wing (IERW) training. Research performed by the Army Research Institute showed that a combination of synthetic flight simulation and criterion-based training during the primary phase of IERW had the potential for saving training time and costs in the aircraft. This research was performed using a low-cost simulator based upon the UH-1 helicopter. In the 4 quasi-experiments reported, positive transfer effectiveness ratios (TERs) were observed for most flight maneuvers pretrained in the simulator; student pilots in the simulator group required fewer iterations than control participants to reach proficiency on most flight maneuvers in the UH-1 training aircraft. As the visual display and flight modeling systems were upgraded, greater TERs were observed, and differences among groups tended to become significant. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aviation Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLIGHT training KW - FLIGHT simulators KW - UNITED States. Army N1 - Accession Number: 8597181; Stewart, II, John E. 1 Dohme, John A. 1 Nullmeyer, Robert T. 2; Affiliation: 1: U.S. Army Research Institute 2: Air Force Research Laboratory; Source Info: 2002, Vol. 12 Issue 4, p359; Subject Term: FLIGHT training; Subject Term: FLIGHT simulators; Company/Entity: UNITED States. Army; NAICS/Industry Codes: 611512 Flight Training; NAICS/Industry Codes: 928110 National Security; Number of Pages: 17p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8597181&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chehroudi, B. AU - Cohn, R. AU - Talley, D. T1 - Cryogenic shear layers: experiments and phenomenological modeling of the initial growth rate under subcritical and supercritical conditions JO - International Journal of Heat & Fluid Flow JF - International Journal of Heat & Fluid Flow Y1 - 2002/10// VL - 23 IS - 5 M3 - Article SP - 554 SN - 0142727X AB - A jet of a cryogenic fluid, typically liquid N2, is injected into a chamber whose ambient pressure is varied to values exceeding the critical pressure of the injectant. The structure of the jet and the shear layer between the jet and the ambient have been examined. Results from visualization, jet initial growth rate, fractal analysis, and Raman scattering measurements indicate that the behavior of the injected fluid changes from liquid spray-like to gaseous jet-like behavior as pressure increased. This is attributed to the reduction of the surface tension and enthalpy of vaporization as the critical pressure of the injectant is approached. The initial divergence angle indicating the growth rate of the jet is measured at the jet exit. These values are then compared with those measured from a large number of other mixing layer flows, including atomized liquid sprays, turbulent incompressible gaseous jets, supersonic jets, and incompressible but variable density jets covering over four orders of magnitude in the gas-to-liquid density ratio, the first time such a plot has been reported over this large a range of density ratios. At and above the critical pressure of the injected fluid, the jet initial growth rate measurements agrees well with the theory and measurements of incompressible, variable density, gaseous mixing layers. This is the first time a quantitative parameter has been used to demonstrate that the similarity between the two flows extends beyond mere qualitative physical appearance. The initial growth rate using Raman scattering is also in reasonably good agreement with our measurements using shadowgraphy if twice the FWHM of the normalized intensity radial profiles are used. Finally, an equation based on a proposed physical mechanism combined with the characteristic gasification time (τg) and interfacial bulge formation/separation time (τb) is proposed, θ=0.27[τb/(τb+τg)+(ρg/ρl)0.5], that shows good agreement with the measured initial growth rate data. It is found that the transition point from sub- (liquid-jet like) to supercritical (gas-jet like) behavior occurs when the time scale ratio (τb/(τb+τg)) is approximately equal to 0.5. [Copyright &y& Elsevier] AB - Copyright of International Journal of Heat & Fluid Flow is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUID dynamics KW - RAMAN effect KW - ENTHALPY N1 - Accession Number: 7823699; Chehroudi, B. 1; Email Address: bruce.chehroudi@edwards.af.mil Cohn, R. 2 Talley, D. 2; Affiliation: 1: Engineering Research Consultants Inc., 10 E. Saturn Blvd., Edwards AFB, CA 93524-7680, USA 2: Air Force Research Laboratory (AFRL), Space and Missile Propulsion Division, AFRL/PRSA, 10 E. Saturn Blvd, Edwards AFB, CA 93524-7680, USA; Source Info: Oct2002, Vol. 23 Issue 5, p554; Subject Term: FLUID dynamics; Subject Term: RAMAN effect; Subject Term: ENTHALPY; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7823699&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Byrd, Larry W. AU - Birman, Victor T1 - Onset of matrix cracking in angle-ply ceramic matrix composites JO - International Journal of Mechanical Sciences JF - International Journal of Mechanical Sciences Y1 - 2002/10// VL - 44 IS - 10 M3 - Article SP - 2173 SN - 00207403 AB - The problem of initial damage in angle-ply [−θm/0n/θm] and [−θ/θ] ceramic matrix composites subjected to axial tension is considered in this paper. The damage is in the form of matrix cracks that may appear in either inclined (−θ and θ lamination angle) or longitudinal layers. As follows from the analysis, if the lamination angle of the inclined layers is small, the initial failure occurs in the 0-layers of [−θm/0n/θm] composites or in [−θ/θ] composites in the form of bridging cracks. However, if the inclined layers form a larger angle with the load direction, they fail due to tunneling cracks. It is shown that the boundary between two different modes of failure in a representative SiC/CAS composite corresponds to a lamination angle equal to 35° in the case of [−θm/0n/θm] composites. In the case of [−θ/θ] laminates, the boundary value of the lamination angle is equal to 45°, i.e. bridging cracks form if θ<45° and tunneling cracks appear if θ>45°. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mechanical Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPOSITE materials KW - FRACTURE mechanics KW - Ceramic matrix composites KW - Fracture KW - Matrix cracks KW - Residual stresses N1 - Accession Number: 8722189; Byrd, Larry W. 1 Birman, Victor 2; Email Address: vbirman@umr.edu; Affiliation: 1: Air Force Research Laboratory, AFRL/VASM, Bldg. 65, 2790 D Street, Wright-Patterson Air Force Base, OH 45433-7402, USA 2: University of Missouri-Rolla, Engineering Education Center, 8001 Natural Bridge Road, St. Louis, MO 63121, USA; Source Info: Oct2002, Vol. 44 Issue 10, p2173; Subject Term: COMPOSITE materials; Subject Term: FRACTURE mechanics; Author-Supplied Keyword: Ceramic matrix composites; Author-Supplied Keyword: Fracture; Author-Supplied Keyword: Matrix cracks; Author-Supplied Keyword: Residual stresses; Number of Pages: 15p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8722189&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lupo, James A. AU - Wang, Zhiqiang AU - McKenney, Alan M. AU - Pachter, Ruth AU - Mattson, William T1 - A large scale molecular dynamics simulation code using the fast multipole algorithm (FMD): performance and application JO - Journal of Molecular Graphics & Modelling JF - Journal of Molecular Graphics & Modelling Y1 - 2002/10// VL - 21 IS - 2 M3 - Article SP - 89 SN - 10933263 AB - We present the performance of the fast classical molecular dynamics (MD) code, fast molecular dynamics (FMD), designed for efficient, object-oriented, and scalable large scale simulations, and summarize its application to a liquid crystalline cluster. FMD uses an implementation of the three-dimensional fast multipole method, developed in our group. The fast multipole method offers an efficient way (order O(N)) to handle long range electrostatic interactions, thus, enabling more realistic simulations of large molecular systems. Performance testing was carried out on IBM SP2, SGI Origin 2000, and CRAY T3E massively parallel systems using the MPI massage passing library. The electrostatic forces were tested on models of up to 100,000 randomly placed charges, and on protein and liquid crystalline molecular systems of over 99,000 atoms. Tests on the stability of the method are presented, along with comparisons with direct calculations, the namd2 code, and the physical multipole-based cell-multipole method. [Copyright &y& Elsevier] AB - Copyright of Journal of Molecular Graphics & Modelling is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOLECULAR dynamics KW - LIQUID crystals KW - Fast multipole algorithm KW - Liquid crystalline cluster KW - Molecular dynamics N1 - Accession Number: 7871248; Lupo, James A. 1 Wang, Zhiqiang 1 McKenney, Alan M. 1 Pachter, Ruth 1 Mattson, William 2; Affiliation: 1: Materials Directorate, Air Force Research Laboratory, Wright-Patterson, AFB, OH 45433-7702, USA 2: Department of Physics, University of Illinois, Urbana-Champaign, 1110 W. Green Street, Urbana, IL 61801, USA; Source Info: Oct2002, Vol. 21 Issue 2, p89; Subject Term: MOLECULAR dynamics; Subject Term: LIQUID crystals; Author-Supplied Keyword: Fast multipole algorithm; Author-Supplied Keyword: Liquid crystalline cluster; Author-Supplied Keyword: Molecular dynamics; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7871248&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kalns, John AU - Morris, Julie AU - Eggers, Jeffrey AU - Kiel, Johnathan T1 - Delayed treatment with doxycycline has limited effect on anthrax infection in BLK57/B6 mice JO - Biochemical & Biophysical Research Communications JF - Biochemical & Biophysical Research Communications Y1 - 2002/09/27/ VL - 297 IS - 3 M3 - Article SP - 506 SN - 0006291X AB - Blk57/B6 mice were infected with LD90 dose of Sterne strain anthrax spores subcutaneously and then treated with doxycycline. Doxycycline at a dose of 1.5 mg/kg, by intra-peritoneal injection, protected mice from death when given at the same time as spores. When doxycycline administration was delayed 4 h survival is 90%. Delay of 24 h increased survival time but had no impact on eventual mortality. When doxycycline was delayed 48 h, mortality and time to death were comparable to sham injection. Peritoneal macrophages harvested from Blk57/B6 mice were examined for response to anthrax lethal toxin and are shown to be deficient in their ability to produce TNF-α and have increased expression of IL-6 compared to RAW 264.7 murine macrophage cell line. These findings suggest that antibiotic therapy has limited effects following lethal anthrax spore challenge, even when the host is of a phenotype that does not produce TNF-α in response to anthrax lethal toxin exposure. [Copyright &y& Elsevier] AB - Copyright of Biochemical & Biophysical Research Communications is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANTHRAX KW - BACILLUS anthracis KW - ANTIBIOTICS -- Therapeutic use KW - Anthrax KW - Antibiotic therapy KW - Bacillus anthracis KW - Doxycycline KW - Mice KW - Murine N1 - Accession Number: 8516038; Kalns, John 1; Email Address: john.kalns@brooks.af.mil Morris, Julie 1 Eggers, Jeffrey 2 Kiel, Johnathan 2; Affiliation: 1: Davis Hyperbaric Laboratory, USAFSAM/FEH, 2602 Louis Bauer Drive, Brooks City-Base, TX 78235-5252, USA 2: Air Force Research Laboratory, Human Effectiveness Directorate, Brooks AFB, TX, USA; Source Info: Sep2002, Vol. 297 Issue 3, p506; Subject Term: ANTHRAX; Subject Term: BACILLUS anthracis; Subject Term: ANTIBIOTICS -- Therapeutic use; Author-Supplied Keyword: Anthrax; Author-Supplied Keyword: Antibiotic therapy; Author-Supplied Keyword: Bacillus anthracis; Author-Supplied Keyword: Doxycycline; Author-Supplied Keyword: Mice; Author-Supplied Keyword: Murine; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8516038&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kendig, K.L. AU - Miracle, D.B. T1 - Strengthening mechanisms of an Al-Mg-Sc-Zr alloy JO - Acta Materialia JF - Acta Materialia Y1 - 2002/09/20/ VL - 50 IS - 16 M3 - Article SP - 4165 SN - 13596454 AB - As a step toward developing an Al-Mg-Sc-Zr alloy for use up to 200 °C, the mechanisms responsible for alloy strengthening were identified for Al-6Mg-2Sc-1Zr (wt%) (Al-6.7Mg-1.2Sc-0.3Zr (at%)). The current work quantifies the active strengthening mechanisms at room temperature and explicitly considers solid solution strengthening, grain boundary strengthening, and Al3(Sc,Zr) precipitate strengthening. Existing strengthening models, together with data from microstructural characterization were used to determine the magnitude of individual contributions. Strengthening due to the sub-micron grain size was the largest contribution to alloy strength, followed in decreasing order by precipitate strengthening and solid solution strengthening. Tensile yield strengths, 540–640 MPa (78–93 ksi), measured at room temperature agree well with predicted values. Model predictions showed that increasing the precipitate size from 7.5 nm to 20–25 nm and increasing the volume fraction of these particles from 0.015–0.025 up to 0.035 could produce a material with a yield strength of 865 MPa (125 ksi). [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM alloys KW - MAGNESIUM alloys KW - SCANDIUM KW - ZIRCONIUM alloys KW - STRENGTHENING mechanisms in solids KW - Aluminium KW - Mechanical properties KW - Microstructure KW - Scandium N1 - Accession Number: 7871905; Kendig, K.L.; Email Address: Kevin.kendig@wpafb.af.mil Miracle, D.B. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, 2230 Tenth Street, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Sep2002, Vol. 50 Issue 16, p4165; Subject Term: ALUMINUM alloys; Subject Term: MAGNESIUM alloys; Subject Term: SCANDIUM; Subject Term: ZIRCONIUM alloys; Subject Term: STRENGTHENING mechanisms in solids; Author-Supplied Keyword: Aluminium; Author-Supplied Keyword: Mechanical properties; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Scandium; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7871905&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - NICHOLAS, T. T1 - Step loading for very high cycle fatigue. JO - Fatigue & Fracture of Engineering Materials & Structures JF - Fatigue & Fracture of Engineering Materials & Structures Y1 - 2002/09// VL - 25 IS - 8/9 M3 - Article SP - 861 EP - 869 PB - Wiley-Blackwell SN - 8756758X AB - ABSTRACT The conventional method for determining fatigue strength at high cycle counts is to either extrapolate S–N data from lower cycle counts or to generate S–N data in the high cycle count regime using special high frequency test machines. In the process of generating S–N data, runout tests often occur where no failure is obtained within the allotted time for a test. Such data points are normally indicated on an S–N plot with an arrow, but no information is available as to whether failure would ever occur. As an alternative, and as a method for getting a data point for every test, a step-loading method may be employed. In this paper, some of the unique test equipment being applied to the study of high cycle fatigue in our laboratory are reviewed. Data are presented on the long-life fatigue behaviour of Ti-6Al-4V which validate both the step-loading methodology and indicate the trend of fatigue strength as a function of cycle number in the very high cycle fatigue regime. The absence of coaxing is demonstrated by comparing S–N data with step-loading data. Applicability of high frequency testing to the determination of fatigue crack growth thresholds is also demonstrated. [ABSTRACT FROM AUTHOR] AB - Copyright of Fatigue & Fracture of Engineering Materials & Structures is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LOADING & unloading KW - MATERIALS -- Fatigue KW - coaxing KW - High cycle fatigue KW - high frequency KW - Step loading KW - Ti-6Al-4V N1 - Accession Number: 7274483; NICHOLAS, T. 1; Affiliation: 1: U.S. Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, 45433, U.S.A.; Source Info: Sep2002, Vol. 25 Issue 8/9, p861; Subject Term: LOADING & unloading; Subject Term: MATERIALS -- Fatigue; Author-Supplied Keyword: coaxing; Author-Supplied Keyword: High cycle fatigue; Author-Supplied Keyword: high frequency; Author-Supplied Keyword: Step loading; Author-Supplied Keyword: Ti-6Al-4V; Number of Pages: 10p; Document Type: Article L3 - 10.1046/j.1460-2695.2002.00555.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7274483&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bieler, Thomas R. AU - Semiatin, S.L. T1 - The origins of heterogeneous deformation during primary hot working of Ti–6Al–4V JO - International Journal of Plasticity JF - International Journal of Plasticity Y1 - 2002/09// VL - 18 IS - 9 M3 - Article SP - 1165 SN - 07496419 AB - A Ti–6Al–4V cylindrical specimen with a large grain colony microstructure was upset forged to 35% reduction at 815 °C at a nominal strain rate of 0.1 s−1. An orientation imaging microscopy (OIM) analysis was conducted in two representative areas, near the center with an estimated von Mises strain of 1.6, and 0.8 about midway from the center to the outer edge. The process of physically breaking up the lamellar microstructure (globularization) was examined, focusing on how the globularization efficiency was affected by the initial colony orientation. Microstructural maps based upon the electron backscattered pattern quality, crystal orientation, and an estimated Taylor factor (using a continuum assumption) were used to identify and quantify heterogeneous deformation phenomena. These analyses show that in regions where both prism and basal slip systems were not operational, macro shear bands developed, leading to kinked lamellar microstructural features. The shear bands concentrated shear in localized regions that were able to flow easily around remaining hard regions, leaving remnants of the hard regions intact. Also, development of large misorientations of 50–90° from the parent grain arising from a transformation from β to α are quantified and related to the globularization efficiency. [Copyright &y& Elsevier] AB - Copyright of International Journal of Plasticity is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEFORMATIONS (Mechanics) KW - PHASE transformations (Physics) KW - MICROSTRUCTURE KW - Crystal plasticity KW - Electron microscopy KW - Grain boundaries KW - Inhomogeneous KW - Metallic KW - Microstructures KW - Phase transformation KW - Polycrystalline material KW - Thermomechanical processes N1 - Accession Number: 7829433; Bieler, Thomas R. 1; Email Address: bieler@egr.msu.edu Semiatin, S.L. 2; Affiliation: 1: Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI 48824-1226, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, Wright Patterson AFB, OH 45433-7817, USA; Source Info: Sep2002, Vol. 18 Issue 9, p1165; Subject Term: DEFORMATIONS (Mechanics); Subject Term: PHASE transformations (Physics); Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: Crystal plasticity; Author-Supplied Keyword: Electron microscopy; Author-Supplied Keyword: Grain boundaries; Author-Supplied Keyword: Inhomogeneous; Author-Supplied Keyword: Metallic; Author-Supplied Keyword: Microstructures; Author-Supplied Keyword: Phase transformation; Author-Supplied Keyword: Polycrystalline material; Author-Supplied Keyword: Thermomechanical processes; Number of Pages: 25p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7829433&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coleman, N.V. AU - Spain, J.C. AU - Duxbury, T. T1 - Evidence that RDX biodegradation by Rhodococcus strain DN22 is plasmid-borne and involves a cytochrome p-450. JO - Journal of Applied Microbiology JF - Journal of Applied Microbiology Y1 - 2002/09// VL - 93 IS - 3 M3 - Article SP - 463 EP - 472 PB - Wiley-Blackwell SN - 13645072 AB - Aims: To investigate the biodegradation of the explosive compound RDX in Rhodococcus strain DN22, a bacterium previously isolated for its ability to grow on RDX as sole nitrogen source. Methods and Results: Analysis of the rates of RDX degradation and nitrite production indicated that 2 mol nitrite were produced per mole RDX degraded. Cells of strain DN22 had the highest activity against RDX during the exponential phase and low activity in the stationary phase. Nitrite production from RDX was inhibited by metyrapone, menadione, piperonyl butoxide, n -octylamine and carbon monoxide and inducible by pyrrolidine, pyridine and atrazine. Acridine orange treatment yielded RDX-minus derivatives of strain DN22 at a curing rate of 1·5% and all of the cured derivatives had lost a large plasmid. Conclusions: RDX biodegradation in strain DN22 appears to involve a plasmid-encoded cytochrome p-450 enzyme. Significance and Impact of the Study: Plasmid-borne RDX degradation genes could potentially be transferred between bacteria. Our research into RDX metabolism in strain DN22 will facilitate future applications of this bacterium for bioremediation. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Microbiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIODEGRADATION KW - BACTERIA KW - CYTOCHROME P-450 N1 - Accession Number: 7154441; Coleman, N.V. 1 Spain, J.C. 2 Duxbury, T. 1; Affiliation: 1: Department of Microbiology, University of Sydney, Sydney, Australia and 2: Air Force Research Laboratory/MLQL, Tyndall AFB, FL, USA; Source Info: Sep2002, Vol. 93 Issue 3, p463; Subject Term: BIODEGRADATION; Subject Term: BACTERIA; Subject Term: CYTOCHROME P-450; Number of Pages: 10p; Document Type: Article L3 - 10.1046/j.1365-2672.2002.01713.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7154441&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Visbal, Miguel R. AU - Gaitonde, Datta V. T1 - On the Use of Higher-Order Finite-Difference Schemes on Curvilinear and Deforming Meshes JO - Journal of Computational Physics JF - Journal of Computational Physics Y1 - 2002/09// VL - 181 IS - 1 M3 - Article SP - 155 SN - 00219991 AB - This study enables the use of very high-order finite-difference schemes for the solution of conservation laws on stretched, curvilinear, and deforming meshes. To illustrate these procedures, we focus on up to 6th-order Pade-type spatial discretizations coupled with up to 10th-order low-pass filters. These are combined with explicit and implicit time integration methods to examine wave propagation and wall-bounded flows described by the Navier–Stokes equations. It is shown that without the incorporation of the filter, application of the high-order compact scheme to nonsmooth meshes results in spurious oscillations which inhibit their applicability. Inclusion of the discriminating low-pass high-order filter restores the advantages of high-order approach even in the presence of large grid discontinuities. When three-dimensional curvilinear meshes are employed, the use of standard metric evaluation procedures significantly degrades accuracy since freestream preservation is violated. To overcome this problem, a simple technique is adopted which ensures metric cancellation and thus ensures freestream preservation even on highly distorted curvilinear meshes. For dynamically deforming grids, an effective numerical treatment is described to evaluate expressions containing the time-varying transformation metrics. With these techniques, metric cancellation is guaranteed regardless of the manner in which grid speeds are defined. The efficacy of the new procedures is demonstrated by solving several model problems as well as by application to flow past a rapidly pitching airfoil and past a flexible panel. [Copyright &y& Elsevier] AB - Copyright of Journal of Computational Physics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUMERICAL grid generation (Numerical analysis) KW - FINITE differences KW - curvilinear coordinates N1 - Accession Number: 8513926; Visbal, Miguel R. 1 Gaitonde, Datta V.; Affiliation: 1: Computational Sciences Branch, Aeronautical Sciences Division, Air Force Research Laboratory, Wright-Patterson AFB, Ohio, 45433, visbal@vaa.wpafb.af.mil; Source Info: Sep2002, Vol. 181 Issue 1, p155; Subject Term: NUMERICAL grid generation (Numerical analysis); Subject Term: FINITE differences; Author-Supplied Keyword: curvilinear coordinates; Number of Pages: 31p; Document Type: Article L3 - 10.1006/jcph.2002.7117 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8513926&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abadi, Jacob T1 - ISRAEL'S QUEST FOR NORMALIZATION WITH AZERBAIJAN AND THE MUSLIM STATES OF CENTRAL ASIA. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 2002///Fall2002 VL - 19 IS - 2 M3 - Article SP - 63 EP - 88 SN - 87553449 AB - The article examines the political and commercial motives that led Israel to intensify its efforts in order to strengthen its ties and establish diplomatic relations with the Muslim states. Diplomatic efforts began long before the end of the Cold War. The collapse of the Soviet Union and the independence of the Muslim republics caused concern in the Arab world. Israeli politicians who had recognized the danger of Islamic fundamentalism in Central Asia and Azerbaijan decided to act promptly. The Israeli government recognizes all former Soviet republics. Interest in the region did not remain confined to politics because Israeli businessmen saw opportunities for enormous profits. Arab politicians and commentators warned that Israel was gaining influence in Central Asia and called upon these republics to join the Muslim world in opposition to Israel and the West. KW - DIPLOMACY KW - MUSLIMS KW - ISLAMIC fundamentalism KW - ISLAM KW - BUSINESS KW - POLITICAL systems KW - INTERNATIONAL relations KW - ASIA, Central KW - ISRAEL N1 - Accession Number: 7333265; Abadi, Jacob 1; Affiliation: 1: Associate Professor of History, United States Air Force Academy, Colorado Springs, CO 80840-5025; Source Info: Fall2002, Vol. 19 Issue 2, p63; Subject Term: DIPLOMACY; Subject Term: MUSLIMS; Subject Term: ISLAMIC fundamentalism; Subject Term: ISLAM; Subject Term: BUSINESS; Subject Term: POLITICAL systems; Subject Term: INTERNATIONAL relations; Subject Term: ASIA, Central; Subject Term: ISRAEL; NAICS/Industry Codes: 928120 International Affairs; NAICS/Industry Codes: 911410 Foreign affairs; Number of Pages: 26p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7333265&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Park, S.-Y. AU - Zhang, T. AU - Interrante, L.V. AU - Farmer, B.L. T1 - The structure of a cyanobiphenyl side chain liquid crystalline poly(silylenemethylene) JO - Polymer JF - Polymer Y1 - 2002/09// VL - 43 IS - 19 M3 - Article SP - 5169 SN - 00323861 AB - The structure of a side chain liquid crystalline poly(silylenemethylene) (–(SiCH3R–CH2)–: R=O(CH2)11O–Ph–Ph–CN, Ph=phenyl) (CN-11) has been studied by X-ray diffraction and differential scanning calorimetry (DSC). The DSC results showed that CN-11 has transitions at ∼92 °C (T2) and ∼147 °C (T1) during both cooling and immediate heating. A third transition occurred at ∼50 °C (T3) during heating after annealing at room temperature. The X-ray fiber pattern of the CN-11 annealed at room temperature showed several wide and small angle reflections which were indexed by a monoclinic unit cell with parameters a=16.8 A˚, b=7.42 A˚, c=43.6 A˚ and β=102.1° (b: fiber direction), representing a crystal structure with layer thickness of ∼43 A˚. Upon heating at T3, the crystal structure became less ordered (but somewhat more ordered than smectic A (SA) and smectic C (SC)). This was followed by SA (or SC) phase at T2, and ultimately an isotropic state (I) at T1. The observed layer thickness (∼43 A˚) is about ∼1.5 times the most extended side chain length, indicating a double-layer structure with tilted or interdigitated side chains. The X-ray fiber pattern had a four-point pattern at d=4.52 A˚, suggesting that the side chains in the crystal are likely to be tilted by 56° from the polymer fiber axis. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LIQUID crystal films KW - CALORIMETRY KW - Hybrid polymers KW - Poly(silylenemethylene) KW - X-ray diffraction N1 - Accession Number: 7854660; Park, S.-Y. 1 Zhang, T. 2 Interrante, L.V. 2 Farmer, B.L. 3; Affiliation: 1: Department of Polymer Science, Kyungpook National University, Tsagu 702 701, South Korea 2: Department of Chemistry, Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7750, USA; Source Info: Sep2002, Vol. 43 Issue 19, p5169; Subject Term: LIQUID crystal films; Subject Term: CALORIMETRY; Author-Supplied Keyword: Hybrid polymers; Author-Supplied Keyword: Poly(silylenemethylene); Author-Supplied Keyword: X-ray diffraction; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7854660&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jessen, G.H. AU - White, B.D. AU - Bradley, S.T. AU - Smith, P.E. AU - Brillson, L.J. AU - Van Nostrand, J.E. AU - Fitch, R. AU - Via, G.D. AU - Gillespie, J.K. AU - Dettmer, R.W. AU - Sewell, J.S. T1 - Ohmic contact characterization of AlGaN/GaN device layers with spatially localized LEEN spectroscopy JO - Solid-State Electronics JF - Solid-State Electronics Y1 - 2002/09// VL - 46 IS - 9 M3 - Article SP - 1427 SN - 00381101 AB - Low energy electron-excited nano-luminescence (LEEN) spectroscopy has been used to correlate higher intensities of deep level emissions with higher ohmic contact values on AlGaN/GaN device layers. Deep level defect emissions in the AlGaN layers have also been identified by LEEN as a signature of uncharacteristically high sheet resistances for a given wafer. The spectral features observed locally at the ohmic contact region are compared with direct electrical measurements of the same device structures. Ohmic contacts formed by annealing Ti/Al/Ni/Au at 800 °C for 30 s in nitrogen range from 1.0×10−6 to 1.0×10−4 Ω cm2 (0.2–3.9 Ω mm), with average sheet resistance values ranging from 650 to 2275 Ω/□ as Al mole fraction decreases. The depth dependent characterization capacity of LEEN allows the density of defect emissions to be assigned to particular interfaces. For these samples, the deep level emissions found at 2.20 and 2.60–3.15 eV found near the surface of the sample while the defect emissions associated with high sheet resistance are found to be in the AlGaN layer itself. Unprocessed material shows that samples with the lowest amounts of midgap luminescence produce the lowest contact resistance. This information can be used to determine the outcome of device fabrication prior to contact formation. [Copyright &y& Elsevier] AB - Copyright of Solid-State Electronics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OHMIC contacts KW - CATHODOLUMINESCENCE KW - AlGaN KW - Cathodoluminescence KW - GaN KW - HEMT KW - Low energy electron-excited nano-luminescence KW - Luminescence KW - Ohmic contacts N1 - Accession Number: 7837198; Jessen, G.H. 1; Email Address: jessen@ee.eng.ohio-state.edu White, B.D. 1 Bradley, S.T. 1 Smith, P.E. 1 Brillson, L.J. 1 Van Nostrand, J.E. 2 Fitch, R. 3 Via, G.D. 3 Gillespie, J.K. 3 Dettmer, R.W. 3 Sewell, J.S. 3; Affiliation: 1: Department of Electrical Engineering, The Ohio State University, 205 Dreese Laboratory, 2015 Neil Avenue, Columbus, OH 43210, USA 2: Air Force Research Laboratory, Materials Directorate, 2241 Avionics Circle, WPAFB, OH 45433-7322, USA 3: Air Force Research Laboratory, Sensors Directorate, 2241 Avionics Circle, WPAFB, OH 45433-7322, USA; Source Info: Sep2002, Vol. 46 Issue 9, p1427; Subject Term: OHMIC contacts; Subject Term: CATHODOLUMINESCENCE; Author-Supplied Keyword: AlGaN; Author-Supplied Keyword: Cathodoluminescence; Author-Supplied Keyword: GaN; Author-Supplied Keyword: HEMT; Author-Supplied Keyword: Low energy electron-excited nano-luminescence; Author-Supplied Keyword: Luminescence; Author-Supplied Keyword: Ohmic contacts; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7837198&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jin, O. AU - Mall, S. T1 - Effects of independent pad displacement on fretting fatigue behavior of Ti–6Al–4V JO - Wear JF - Wear Y1 - 2002/09// VL - 253 IS - 5/6 M3 - Article SP - 585 SN - 00431648 AB - A fretting test setup was developed which was capable of applying independent pad movement under a normal force and stress amplitude condition. The independent control of pad movement was achieved by dual actuators in a servohydraulic test frame where one of the two actuators was directly connected to the fretting fixture. This setup could perform both fretting fatigue (stick and stick-slip) and fretting wear (gross slip) tests. Cylinder-on-flat contact configuration was used to characterize the effects of pad displacement on the fretting fatigue behavior of a titanium alloy, Ti–6Al–4V. Several tests, at different pad displacements, were conducted at two normal forces but at one stress amplitude. For both normal forces, the fretting fatigue life decreased initially as the relative slip range increased. A minimum fretting fatigue life was observed at relative slip range of 50–60 μm, and then it increased with the increase of relative slip range. When the relative slip range was greater than 60 μm, the gross sliding occurred and the specimen did not fail. The fretting life versus relative slip range relationship was independent of the normal force used in this study. Fretting regimes (stick, partial slip, mixed, gross slip) were identified using the evolution, not the shape, of fretting loops (tangential force versus relative slip). [Copyright &y& Elsevier] AB - Copyright of Wear is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - FRETTING corrosion KW - MECHANICAL wear KW - Contact conditions KW - Fretting fatigue KW - Fretting wear KW - Relative slip amplitude KW - Tangential force N1 - Accession Number: 7873613; Jin, O. 1 Mall, S. 2; Email Address: shankar.mall@afit.edu; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433-7765, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Sep2002, Vol. 253 Issue 5/6, p585; Subject Term: TITANIUM alloys; Subject Term: FRETTING corrosion; Subject Term: MECHANICAL wear; Author-Supplied Keyword: Contact conditions; Author-Supplied Keyword: Fretting fatigue; Author-Supplied Keyword: Fretting wear; Author-Supplied Keyword: Relative slip amplitude; Author-Supplied Keyword: Tangential force; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7873613&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bhushan, Bharat AU - Halasz, Annamaria AU - Spain, Jim C. AU - Hawari, Jalal T1 - Diaphorase catalyzed biotransformation of RDX via N-denitration mechanism JO - Biochemical & Biophysical Research Communications JF - Biochemical & Biophysical Research Communications Y1 - 2002/08/30/ VL - 296 IS - 4 M3 - Article SP - 779 SN - 0006291X AB - Previously, we hypothesized that hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) can be biotransformed by anaerobic sludge via three different routes: (1) direct ring cleavage via α-hydroxylation of a-CH2 group, (2) reduction of one of the –NO2 groups to –NO, (3) N-denitration prior to ring cleavage. The present study describes biotransformation of RDX via route 3 by a diaphorase (EC 1.8.1.4) from Clostridium kluyveri using NADH as electron donor. The removal of RDX was accompanied by the formation and accumulation of nitrite ion (NO2−), formaldehyde (HCHO), ammonium (NH4+), and nitrous oxide (N2O). None of the RDX-nitroso products were detected. The ring cleavage product methylenedinitramine was detected as the transient intermediate. Product stoichiometry showed that each reacted RDX molecule produced one nitrite ion and the product distribution gave a carbon (C) and nitrogen (N) mass balance of 91 and 92%, respectively, supporting the occurrence of a mono-denitration step prior to the ring cleavage and decomposition. Severe oxygen mediated inhibition (92% inhibition) of RDX biotransformation and superoxide dismutase-sensitive cytochrome c reduction indicated the potential involvement of an anion radical RDX⋅− prior to denitration. A comparative study between native- and apo-enzymes showed the possible involvement of flavin mononucleotide (FMN) in catalyzing the transfer of a redox equivalent (e/H+) from NADH to RDX to produce RDX⋅− responsible for secondary decomposition. [Copyright &y& Elsevier] AB - Copyright of Biochemical & Biophysical Research Communications is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIOTRANSFORMATION (Metabolism) KW - CLOSTRIDIUM KW - Biotransformation KW - Clostridium sp. KW - Denitration KW - Diaphorase KW - RDX N1 - Accession Number: 8512445; Bhushan, Bharat 1 Halasz, Annamaria 1 Spain, Jim C. 2 Hawari, Jalal 1; Email Address: jalal.hawari@nrc.ca; Affiliation: 1: Biotechnology Research Institute, National Research Council of Canada, 6100 Royalmount Avenue, Montreal, Que., Canada H4P 2R2 2: US Air Force Research Laboratory, 139 Barnes Dr, Tyndall AFB, FL 32403, USA; Source Info: Aug2002, Vol. 296 Issue 4, p779; Subject Term: BIOTRANSFORMATION (Metabolism); Subject Term: CLOSTRIDIUM; Author-Supplied Keyword: Biotransformation; Author-Supplied Keyword: Clostridium sp.; Author-Supplied Keyword: Denitration; Author-Supplied Keyword: Diaphorase; Author-Supplied Keyword: RDX; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8512445&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smart, D.F. AU - Shea, M.A. T1 - A review of solar proton events during the 22nd solar cycle JO - Advances in Space Research JF - Advances in Space Research Y1 - 2002/08/15/ VL - 30 IS - 4 M3 - Article SP - 1033 SN - 02731177 AB - Solar cycle 22 had significant, large fluence, energetic particle events on a scale reminiscent of the 19th solar cycle. Examination of the characteristics of these large events suggests that some of the old concepts of spectral form, intensity-time envelope and energy extrapolations, used to estimate the dose from large events that occurred during previous solar cycles should be re-evaluated. There has also been a dramatic change in perspective regarding the source of solar protons observed in interplanetary space. Very large fluence events are associated with powerful fast interplanetary shocks. The elemental composition and charge state of these events is suggestive of a dominate source in the solar corona and not from a very hot plasma. Furthermore, there is a strong suggestion that the intensity-time profile observed in space is dominated by the connection of the observer to an interplanetary shock source rather than to a unique location near the surface of the sun. These concepts will be examined from the perspective of energetic particles contributing to the dose experienced by an astronaut on an interplanetary space mission. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR cycle KW - INTERPLANETARY voyages KW - SOLAR activity N1 - Accession Number: 8807516; Smart, D.F. 1 Shea, M.A. 1; Affiliation: 1: Air Force Research Laboratory (VSBS), 29 Randolph Road, Hanscom AFB, MA, 01731, USA; Source Info: Aug2002, Vol. 30 Issue 4, p1033; Subject Term: SOLAR cycle; Subject Term: INTERPLANETARY voyages; Subject Term: SOLAR activity; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8807516&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lovell, J.L. AU - Duldig, M.L. AU - Humble, J.E. AU - Shea, M.A. AU - Smart, D.F. AU - Flückiger, E.O. T1 - The cosmic ray ground level enhancement of 6 November 1997 JO - Advances in Space Research JF - Advances in Space Research Y1 - 2002/08/15/ VL - 30 IS - 4 M3 - Article SP - 1045 SN - 02731177 AB - The relativistic solar proton event of 6 November 1997 resulted in the first ground-level enhancement (GLE) of solar cycle 23. The earliest onset was around 1215 UT but was up to 15 minutes later at some neutron monitor locations. The time of maximum intensity also varied significantly over the world-wide neutron monitor network. The modeled particle distributions and spectra are presented. The apparent particle arrival direction is found to be largely consistent with propagation outward from the sun along interplanetary magnetic field lines. [Copyright &y& Elsevier] AB - Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROTONS KW - SOLAR cycle N1 - Accession Number: 8807517; Lovell, J.L. 1,2,3 Duldig, M.L. 4 Humble, J.E. 2 Shea, M.A. 5 Smart, D.F. 5 Flückiger, E.O. 6; Affiliation: 1: Institute of Physical and Chemical Research (RIKEN), Wako, Saitama, 351-0198 Japan 2: School of Mathematics and Physics, University of Tasmania, GPO Box 252-21, Hobart, Tasmania 7001, Australia 3: Now at CSIRO Office of Space Science and Applications, GPO Box 3023, Canberra, ACT 2601, Australia 4: Australian Antarctic Division, Channel Highway, Kingston, Tasmania 7050, Australia 5: Air Force Research Laboratory (VSBS), Hanscom AFB, Bedford, MA 01731, USA 6: Physikalisches Institut, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland; Source Info: Aug2002, Vol. 30 Issue 4, p1045; Subject Term: PROTONS; Subject Term: SOLAR cycle; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8807517&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Špalek, Otomar AU - Jirásek, Vıt AU - Čenský, Miroslav AU - Kodymová, Jarmila AU - Jakubec, Ivo AU - Hager, Gordon D. T1 - Chemical generation of atomic iodine for the chemical oxygen–iodine laser. II. Experimental results JO - Chemical Physics JF - Chemical Physics Y1 - 2002/08/15/ VL - 282 IS - 1 M3 - Article SP - 147 SN - 03010104 AB - A new method for the chemical generation of atomic iodine intended for use in a chemical oxygen–iodine laser (COIL) was investigated experimentally. The method is based on the fast reaction of hydrogen iodide with chemically produced chlorine atoms. Effects of the initial ratio of reactants and their mixing in a flow of nitrogen were investigated experimentally and interpreted by means of a computational model for the reaction system. The yield of iodine atoms in the nitrogen flow reached 70–100% under optimum experimental conditions. Gain was observed in preliminary experiments on the chemical generation of atomic iodine in a flow of singlet oxygen. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATOMS KW - IODINE lasers KW - Atomic chlorine KW - Atomic iodine KW - Chemical oxygen–iodine laser, COIL N1 - Accession Number: 7845154; Špalek, Otomar 1,2; Email Address: spaleko@fzu.cz Jirásek, Vıt 1,2 Čenský, Miroslav 1 Kodymová, Jarmila 1 Jakubec, Ivo 2 Hager, Gordon D. 3; Affiliation: 1: Institute of Physics, Academy of Sciences, Na Slovance 2, Prague 182 21, Czech Republic 2: Institute of Inorganic Chemistry, Academy of Sciences, Řež 250 68, Czech Republic 3: Air Force Research Laboratory/DE, Kirtland Air Force Base, NM 87117, USA; Source Info: Aug2002, Vol. 282 Issue 1, p147; Subject Term: ATOMS; Subject Term: IODINE lasers; Author-Supplied Keyword: Atomic chlorine; Author-Supplied Keyword: Atomic iodine; Author-Supplied Keyword: Chemical oxygen–iodine laser, COIL; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7845154&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chigarev, N.V. AU - Pan, X.Y. AU - Gong, Qihuang AU - Paraschuk, D.Yu. AU - Kobryanskii, V.M. T1 - Transient photoinduced anisotropy of absorption in nanopolyacetylene JO - Optics Communications JF - Optics Communications Y1 - 2002/08/15/ VL - 209 IS - 4-6 M3 - Article SP - 363 SN - 00304018 AB - The polarization response of neutral sub-gap photoexcited states in nonoriented nanopolyacetylene films was measured using a femtosecond photoinduced polarimetry technique. We show that the observed polarization signals are associated with a linear dichroism in the photoexcited state of trans-nanopolyacetylene. The characteristic decay time of the polarization signals was 1.4 ps. At the same time, we conclude that the photoinduced anisotropy persists up to 10 ps and therefore the photoexcited π electrons are highly delocalized along the polymer chains. [Copyright &y& Elsevier] AB - Copyright of Optics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - POLYACETYLENES KW - ANISOTROPY KW - 42.70.Jk N1 - Accession Number: 7858927; Chigarev, N.V. 1,2 Pan, X.Y. 1 Gong, Qihuang 1; Email Address: qhgong@pku.edu.cn Paraschuk, D.Yu. 2 Kobryanskii, V.M. 3,4; Affiliation: 1: State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, China 2: Physics Department, M.V. Lomonosov Moscow State University, Moscow 119899, Russia 3: Institute of Chemical Physics, RAS, Moscow 117977, Russia 4: Air Force Research Laboratory, Material and Manufacturing Directorate, AFRL/MLBR Wright Patterson AFB, OH 45433, USA; Source Info: Aug2002, Vol. 209 Issue 4-6, p363; Subject Term: THIN films; Subject Term: POLYACETYLENES; Subject Term: ANISOTROPY; Author-Supplied Keyword: 42.70.Jk; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7858927&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Naboulsi, S. AU - Mall, S. T1 - Investigation of high cycle and low cycle fatigue interaction on fretting behavior JO - International Journal of Mechanical Sciences JF - International Journal of Mechanical Sciences Y1 - 2002/08// VL - 44 IS - 8 M3 - Article SP - 1625 SN - 00207403 AB - Fretting-fatigue behavior and damage accumulation under a variable-amplitude cycling load is investigated in a configuration involving a cylindrical indenter in contact with finite width plate. Relative magnitudes of cyclic tangential and bulk loads not only affect the contact conditions, but also their relative positions with respect to each other. Several stick–slip conditions on the contact surface may develop during the application of variable-amplitude fatigue load, and these are secondary and tertiary slips as well as shake-down. Further, residual shear traction develops during the application of cyclic load. The appropriate characterization of fretting-fatigue behavior or life should, therefore, include the complete history of applied cyclic tangential and bulk loads. Furthermore, experiments from a previous study conducted under a variable-amplitude fatigue loading condition are analyzed to characterize the damage accrual from its individual components involving constant-amplitude fatigue load by incorporating the contact mechanics and a multi-axial fatigue critical plane parameter. This analysis shows that there is nonlinear damage accumulation during variable-amplitude fretting-fatigue load. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mechanical Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MATERIALS -- Fatigue KW - CONTACT mechanics KW - FINITE element method KW - Contact mechanics KW - Crack initiation prediction KW - Damage rule KW - Finite element analysis KW - Fretting fatigue KW - Variable loading N1 - Accession Number: 7866633; Naboulsi, S. 1 Mall, S. 1,2; Email Address: shankar.mall@afit.edu; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology (AFIT/ENY), Bldg 640, 2950 P. St., Wright-Patterson Air Force Base, OH 45433-7765, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/MLLMN), Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Aug2002, Vol. 44 Issue 8, p1625; Subject Term: MATERIALS -- Fatigue; Subject Term: CONTACT mechanics; Subject Term: FINITE element method; Author-Supplied Keyword: Contact mechanics; Author-Supplied Keyword: Crack initiation prediction; Author-Supplied Keyword: Damage rule; Author-Supplied Keyword: Finite element analysis; Author-Supplied Keyword: Fretting fatigue; Author-Supplied Keyword: Variable loading; Number of Pages: 21p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7866633&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Campbell, W. Keith AU - Foster, Craig A. AU - Finkel, Eli J. T1 - Does Self-Love Lead to Love for Others? A Story of Narcissistic Game Playing. JO - Journal of Personality & Social Psychology JF - Journal of Personality & Social Psychology Y1 - 2002/08// VL - 83 IS - 2 M3 - Article SP - 340 EP - 354 SN - 00223514 AB - Five studies investigated the links among narcissism, self-esteem, and love. Across all studies, narcissism was associated primarily with a game-playing love style. This link was found in reports of general love styles (Study 1a) and of love in ongoing romantic relationships (Studies 1b-3, 5). Narcissists' game playing love style was the result of a need for power and autonomy (Study 2) and was linked with greater relationship alternatives and lesser commitment (Study 3). Finally, narcissists' self-reports of game playing were confirmed by their partners in past and current relationships (Studies 4, 5). In contrast, self-esteem was negatively linked to manic love and positively linked to passionate love across studies. Implications for the understanding of narcissism in relationships are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Personality & Social Psychology is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NARCISSISM KW - SELF-esteem KW - LOVE KW - INTERPERSONAL relations KW - EGOISM N1 - Accession Number: 7053943; Campbell, W. Keith 1; Email Address: wkc@uga.edu Foster, Craig A. 2 Finkel, Eli J. 3; Affiliation: 1: University of Georgia 2: United States Air Force Academy 3: Carnegie Mellon University; Source Info: Aug2002, Vol. 83 Issue 2, p340; Subject Term: NARCISSISM; Subject Term: SELF-esteem; Subject Term: LOVE; Subject Term: INTERPERSONAL relations; Subject Term: EGOISM; Number of Pages: 15p; Illustrations: 2 Diagrams, 2 Charts; Document Type: Article L3 - 10.1037//0022-3514.83.2.340 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7053943&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mogilevsky, P. T1 - Preparation of thin ceramic monofilaments for characterization by TEM JO - Ultramicroscopy JF - Ultramicroscopy Y1 - 2002/08// VL - 92 IS - 3/4 M3 - Article SP - 159 SN - 03043991 AB - A method for preparing transmission electron microscopy specimens from ceramic fibers has been developed that is particularly useful when only a small amount of the material is available for characterization. Fiber segments are lined up and sandwiched between two glass slides using high-temperature epoxy. The resulting specimen is then polished flat from both sides using tripod polisher to remove the glass and produce thin (<2 μm) longitudinal section of the fibers. The specimen is then ion-milled for a short time to produce electron-transparent areas. The method is also suitable for preparing very flat specimens for site-specific optical and SEM analysis. [Copyright &y& Elsevier] AB - Copyright of Ultramicroscopy is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CERAMIC fibers KW - TRANSMISSION electron microscopy KW - EPOXY resins KW - Fiber-reinforced composites KW - Polishing KW - Sample preparation KW - Scanning electron microscopy KW - Transmission electron microscopy N1 - Accession Number: 7841532; Mogilevsky, P. 1; Email Address: pavel.mogilevsky@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory/MLLN, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: Aug2002, Vol. 92 Issue 3/4, p159; Subject Term: CERAMIC fibers; Subject Term: TRANSMISSION electron microscopy; Subject Term: EPOXY resins; Author-Supplied Keyword: Fiber-reinforced composites; Author-Supplied Keyword: Polishing; Author-Supplied Keyword: Sample preparation; Author-Supplied Keyword: Scanning electron microscopy; Author-Supplied Keyword: Transmission electron microscopy; NAICS/Industry Codes: 327990 All other non-metallic mineral product manufacturing; NAICS/Industry Codes: 327999 All Other Miscellaneous Nonmetallic Mineral Product Manufacturing; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 325210 Resin and synthetic rubber manufacturing; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7841532&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Das, G.P. AU - Yeates, A.T. AU - Dudis, D.S. T1 - An AM1 study of the two-photon absorption in bis(styryl)benzene derivatives JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2002/07/24/ VL - 361 IS - 1/2 M3 - Article SP - 71 SN - 00092614 AB - We present an AM1 semi-empirical study of the two-photon absorption (TPA) properties of a number of bis (styryl)benzene derivatives. In a recent report these systems were shown to be good two-photon absorbers. An analysis based on the INDO scheme was also included to calculate the TPA properties. The present study, based on configuration interaction consisting of single and double excitations, is compared with the above INDO model with respect to the prediction of energetics and TPA properties. The results indicate qualitative agreement, but serious questions regarding the applicability of both methods remain. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BENZENE KW - QUASIPARTICLES (Physics) KW - ELECTRON configuration N1 - Accession Number: 7845296; Das, G.P.; Email Address: guru.das@wpafb.af.mil Yeates, A.T. 1 Dudis, D.S. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Division, AFRL/MLBP, WPAFB, OH 45433, USA; Source Info: Jul2002, Vol. 361 Issue 1/2, p71; Subject Term: BENZENE; Subject Term: QUASIPARTICLES (Physics); Subject Term: ELECTRON configuration; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7845296&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chang, T.Y. AU - Wang, X. AU - Evans, D.A. AU - Robinson, S.L. AU - Zheng, J.P. T1 - Tantalum oxide–ruthenium oxide hybrid(R) capacitors JO - Journal of Power Sources JF - Journal of Power Sources Y1 - 2002/07/20/ VL - 110 IS - 1 M3 - Article SP - 138 SN - 03787753 AB - A hybrid capacitor consisting of porous tantalum oxide anode electrode and ruthenium oxide cathode electrode was examined and characterized. The capacitor has a capacitance of 35 mF and an internal resistance of 45 mΩ. It was found that the capacitance was insensitive to current density up to 110 mA/cm2, and temperature ranging from −70 to 50 °C. During dc charge and discharge cycles, the potential of the cathode electrode was within the electrochemical stability window. However, a sudden voltage-jump as high as 7.5 V could occur at the cathode electrode during a short circuit discharge. A simple model was established to describe the transient behavior of cathode and anode electrodes. It was found that the voltage-jump was proportional to the ratio of the internal resistance of the cathode electrode to the total resistance of the capacitor. The resistance distribution inside the capacitor was also determined to be 47, 28, and 25% from the cathode, anode, and electrolyte, respectively. [Copyright &y& Elsevier] AB - Copyright of Journal of Power Sources is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CAPACITORS KW - RUTHENIUM compounds KW - TANTALUM oxide KW - Hybrid capacitors KW - Ruthenium oxide KW - Tantalum oxide N1 - Accession Number: 7834737; Chang, T.Y. 1 Wang, X. 1 Evans, D.A. 2 Robinson, S.L. 3 Zheng, J.P. 1,4; Email Address: zheng@eng.fsu.edu; Affiliation: 1: Department of Electrical and Computer Engineering, Florida A&M University and Florida State University, Tallahassee, FL 32310, USA 2: Evans Capacitor Company, East Providence, RI 02914, USA 3: Air Force Research Laboratory, Eglin AFB, FL 32542, USA 4: The Center for Advanced Power Systems, Florida State University, Tallahassee, FL, USA; Source Info: Jul2002, Vol. 110 Issue 1, p138; Subject Term: CAPACITORS; Subject Term: RUTHENIUM compounds; Subject Term: TANTALUM oxide; Author-Supplied Keyword: Hybrid capacitors; Author-Supplied Keyword: Ruthenium oxide; Author-Supplied Keyword: Tantalum oxide; NAICS/Industry Codes: 334416 Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing; NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing; NAICS/Industry Codes: 417320 Electronic components, navigational and communications equipment and supplies merchant wholesalers; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7834737&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yepez, Jeffrey T1 - Quantum computation for physical modeling JO - Computer Physics Communications JF - Computer Physics Communications Y1 - 2002/07/15/ VL - 146 IS - 3 M3 - Article SP - 277 SN - 00104655 N1 - Accession Number: 7835195; Yepez, Jeffrey 1; Email Address: jeffrey.yepez@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, 29 Randolph Road, Hanscom AFB, MA 01731, USA; Source Info: Jul2002, Vol. 146 Issue 3, p277; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7835195&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yepez, Jeffrey AU - Boghosian, Bruce T1 - An efficient and accurate quantum lattice-gas model for the many-body Schro¨dinger wave equation JO - Computer Physics Communications JF - Computer Physics Communications Y1 - 2002/07/15/ VL - 146 IS - 3 M3 - Article SP - 280 SN - 00104655 AB - Presented is quantum lattice-gas model for simulating the time-dependent evolution of a many-body quantum mechanical system of particles governed by the non-relativistic Schro¨dinger wave equation with an external scalar potential. A variety of computational demonstrations are given where the numerical predictions are compared with exact analytical solutions. In all cases, the model results accurately agree with the analytical predictions and we show that the model's error is second order in the temporal discretization and fourth order in the spatial discretization. The difficult problem of simulating a system of fermionic particles is also treated and a general computational formulation of this problem is given. For pedagogical purposes, the two-particle case is presented and the numerical dispersion of the simulated wave packets is compared with the analytical solutions. [Copyright &y& Elsevier] AB - Copyright of Computer Physics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LATTICE gas KW - QUANTUM computers KW - SCHRODINGER equation KW - Computational physics KW - Quantum computing KW - Quantum lattice gas KW - Quantum mechanics KW - Schrödinger wave equation N1 - Accession Number: 7835196; Yepez, Jeffrey 1; Email Address: jeffrey.yepez@hanscom.af.mil Boghosian, Bruce 2; Email Address: bruce.boghosian@tufts.edu; Affiliation: 1: Air Force Research Laboratory, Hanscom AFB, MA, USA 2: Department of Mathematics, Bromfield-Pearson Hall, Tufts University, Medford, MA 02155, USA; Source Info: Jul2002, Vol. 146 Issue 3, p280; Subject Term: LATTICE gas; Subject Term: QUANTUM computers; Subject Term: SCHRODINGER equation; Author-Supplied Keyword: Computational physics; Author-Supplied Keyword: Quantum computing; Author-Supplied Keyword: Quantum lattice gas; Author-Supplied Keyword: Quantum mechanics; Author-Supplied Keyword: Schrödinger wave equation; Number of Pages: 15p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7835196&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pravia, Marco A. AU - Chen, Zhiying AU - Yepez, Jeffrey AU - Cory, David G. T1 - Towards a NMR implementation of a quantum lattice gas algorithm JO - Computer Physics Communications JF - Computer Physics Communications Y1 - 2002/07/15/ VL - 146 IS - 3 M3 - Article SP - 339 SN - 00104655 AB - Recent theoretical results suggest that an array of quantum information processors communicating via classical channels can be used to solve fluid dynamics problems. Quantum lattice-gas algorithms (QLGA) running on such architectures have been shown to solve the diffusion equation and the nonlinear Burgers equations. In this report, we describe progress towards an ensemble nuclear magnetic resonance (NMR) implementation of a QLGA that solves the diffusion equation. The methods rely on NMR techniques to encode an initial mass density into an ensemble of two-qubit quantum information processors. Using standard pulse techniques, the mass density can then manipulated and evolved through the steps of the algorithm. We provide the experimental results of our first attempt to realize the NMR implementation. The results qualitatively follow the ideal simulation, but the observed implementation errors highlight the need for improved control. [Copyright &y& Elsevier] AB - Copyright of Computer Physics Communications is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUCLEAR magnetic resonance KW - QUANTUM computers KW - LATTICE gas KW - ALGORITHMS N1 - Accession Number: 7835202; Pravia, Marco A. 1 Chen, Zhiying 1 Yepez, Jeffrey 2 Cory, David G. 1; Email Address: dcory@mit.edu; Affiliation: 1: Department of Nuclear Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA 2: Air Force Research Laboratory, Hanscom Field, MA 01731, USA; Source Info: Jul2002, Vol. 146 Issue 3, p339; Subject Term: NUCLEAR magnetic resonance; Subject Term: QUANTUM computers; Subject Term: LATTICE gas; Subject Term: ALGORITHMS; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7835202&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Arnold, Susan T. AU - Miller, Thomas M. AU - Viggiano, A.A. T1 - A theoretical study of high electron affinity sulfur oxyfluorides: SO3F, SO2F3, and SOF5 JO - International Journal of Mass Spectrometry JF - International Journal of Mass Spectrometry Y1 - 2002/07/15/ VL - 218 IS - 3 M3 - Article SP - 207 SN - 13873806 AB - Gaussian-2 theory was used to study a series of sulfur oxyfluorides that have exceptionally high electron affinities (EAs). Optimized geometries were computed for SO3F, SO2F3, SOF5, and their corresponding anions at the MP2(full)/6-311+G(d) level of theory. Both SO3F and SOF5 are found to be stable with respect to dissociation, while SO2F3 is metastable with respect to SO2F2+F. In all cases, electron attachment results in a shortening of one long SO bond within the molecule and a corresponding increase in the remaining SF and SO bonds; a significant portion of the excess charge is accommodated in an SO bonding orbital. Harmonic vibrational frequencies with IR and Raman intensities were computed for all species, and the calculated vibrational spectra of SOF5− and SO2F3− are compared to the reported experimental spectra. The EAs of SO3F, SO2F3, and SOF5 are found to be 5.53, 5.50, and 5.14 eV, respectively, all well exceeding the threshold of 3.6 eV that defines a superhalogen species. The corresponding anion vertical detachment energies and neutral vertical attachment energies are also reported here. The calculated EA of SO3F is discussed in relation to the gas-phase acidity of FSO3H. The homolytic bond dissociation energy of FSO3H is found to differ significantly from the previous estimate, suggesting the previous experimental estimate for the EA of SO3F [J. Am. Chem. Soc. 114 (1992) 4299] be revised upward from 4.8 to 5.2 eV. [Copyright &y& Elsevier] AB - Copyright of International Journal of Mass Spectrometry is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTRONS KW - SULFUR oxides KW - Electron affinity KW - G2 theory KW - SO2F3 KW - SO3F KW - SOF5 KW - Sulfur oxyfluoride N1 - Accession Number: 7852624; Arnold, Susan T.; Email Address: susan.arnold@hanscom.af.mil Miller, Thomas M. 1 Viggiano, A.A. 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate (ARFL/VSBX), 29 Randolph Road, Hanscom AFB, MA 01731, USA; Source Info: Jul2002, Vol. 218 Issue 3, p207; Subject Term: ELECTRONS; Subject Term: SULFUR oxides; Author-Supplied Keyword: Electron affinity; Author-Supplied Keyword: G2 theory; Author-Supplied Keyword: SO2F3; Author-Supplied Keyword: SO3F; Author-Supplied Keyword: SOF5; Author-Supplied Keyword: Sulfur oxyfluoride; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7852624&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ren, Weiju AU - Nicholas, Theodore T1 - Effects and mechanisms of low cycle fatigue and plastic deformation on subsequent high cycle fatigue limit in nickel-base superalloy Udimet 720 JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2002/07// VL - 332 IS - 1/2 M3 - Article SP - 236 SN - 09215093 AB - The effects and mechanisms of low cycle fatigue (LCF) on subsequent high cycle fatigue (HCF) limit were investigated in nickel-base superalloy Udimet 720 at room temperature at a stress ratio of 0.1 and frequencies of 1 and 25 Hz for LCF and HCF, respectively. The HCF limits were determined after various fractions of LCF life consumption. Results show that small fractions of LCF life consumption significantly reduce the subsequent HCF limit, and the reduction is attributed to a combination of LCF damage and the plastic deformation induced during the LCF process. Microstructural characterization indicates that both LCF and plastic deformation reduce the HCF limit by activating the slip systems in the FCC structure of the material, creating favorable sites for easy subsequent HCF damage. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Fatigue KW - NICKEL alloys KW - High cycle fatigue KW - Life prediction KW - Low cycle fatigue KW - Ni-base superalloy KW - Plastic deformation N1 - Accession Number: 7812802; Ren, Weiju; Email Address: weiju.ren@afrl.af.mil Nicholas, Theodore 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/MLLMN), 2230 Tenth Street, Wright-Patterson Air Force Base, Ohio, OH 45433-7817, USA; Source Info: Jul2002, Vol. 332 Issue 1/2, p236; Subject Term: METALS -- Fatigue; Subject Term: NICKEL alloys; Author-Supplied Keyword: High cycle fatigue; Author-Supplied Keyword: Life prediction; Author-Supplied Keyword: Low cycle fatigue; Author-Supplied Keyword: Ni-base superalloy; Author-Supplied Keyword: Plastic deformation; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7812802&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ivasishin, O.M. AU - Shevchenko, S.V. AU - Semiatin, S.L. T1 - Effect of crystallographic texture on the isothermal beta grain-growth kinetics of Ti–6Al–4V JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2002/07// VL - 332 IS - 1/2 M3 - Article SP - 343 SN - 09215093 AB - The effect of crystallographic texture on the kinetics of grain growth during isothermal beta annealing of Ti–6Al–4V was established. For this purpose, samples were subjected to a thermomechanical process to produce material with a uniform, fine equiaxed-alpha microstructure with either a strong or weak (110) beta-phase texture. Grain growth measurements revealed that the classical isothermal grain-growth relation was incapable of describing the observations. Specifically, the grain-growth exponent n was found to have a strong dependence on temperature. In addition, the phenomenon of discontinuous grain growth, or a stagnation in the growth behavior at short times, was documented and ascribed to changes in texture during the grain-growth process. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ANNEALING of metals KW - TITANIUM KW - METAL crystals -- Growth KW - Annealing KW - Grain growth KW - Texture KW - Titanium N1 - Accession Number: 7812814; Ivasishin, O.M. 1 Shevchenko, S.V. 1 Semiatin, S.L. 2; Email Address: ivos@imp.kiev.ua; Affiliation: 1: Institute for Metal Physics, 36 Vernadsky Street, 03142 Kiev, Ukraine 2: Air Force Research Laboratory, Materials and mfg Directorate, AFRL/MLLM, Wright-Patterson Air Force Base, OH 45433-7817, USA; Source Info: Jul2002, Vol. 332 Issue 1/2, p343; Subject Term: ANNEALING of metals; Subject Term: TITANIUM; Subject Term: METAL crystals -- Growth; Author-Supplied Keyword: Annealing; Author-Supplied Keyword: Grain growth; Author-Supplied Keyword: Texture; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 332810 Coating, engraving, cold and heat treating and allied activities; NAICS/Industry Codes: 332811 Metal Heat Treating; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7812814&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Demczyk, B.G. AU - Naik, V.M. AU - Hameed, S. AU - Naik, R. T1 - Comparison of strain relaxation in epitaxial Si0.3Ge0.7 films grown on Si(001) and Ge(001) JO - Materials Science & Engineering: B JF - Materials Science & Engineering: B Y1 - 2002/06/25/ VL - 94 IS - 2/3 M3 - Article SP - 196 SN - 09215107 AB - Epitaxial Si1−xGex films of thickness ∼200 nm have been grown on Si(100) and Ge(100) substrates using chemical vapor deposition. Both X-ray diffraction and Raman studies show that the films are Ge rich (x=0.7) with no residual strain. Cross-sectional transmission electron microscopy studies have been used to demonstrate that the films relax by different mechanisms leading to different surface morphology and interface structure. Films in tension (SiGe/Ge) were seen to relax through the creation of misfit dislocations, whereas those in compression (SiGe/Si) formed islands without dislocations. Consideration of the misfit dislocation formation mechanism in these materials has been used to explain this behavior phenomenologically. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - THIN films KW - CHEMICAL vapor deposition KW - RAMAN spectroscopy KW - SILICON KW - Dislocations KW - Epitaxy KW - Raman spectroscopy KW - SiGe alloy films KW - Strain relaxation KW - Transmission electron microscopy N1 - Accession Number: 7817201; Demczyk, B.G. 1 Naik, V.M. 2 Hameed, S. 3 Naik, R. 3; Email Address: naik@physics.wayne.edu; Affiliation: 1: Air Force Research Laboratory, SNHX, Hanscom AFB, MA 01731, USA 2: Department of Natural Sciences, The University of Michigan-Dearborn, Dearborn, MI 48128, USA 3: Department of Physics and Astronomy, Wayne State University, Detroit, MI 48202, USA; Source Info: Jun2002, Vol. 94 Issue 2/3, p196; Subject Term: THIN films; Subject Term: CHEMICAL vapor deposition; Subject Term: RAMAN spectroscopy; Subject Term: SILICON; Author-Supplied Keyword: Dislocations; Author-Supplied Keyword: Epitaxy; Author-Supplied Keyword: Raman spectroscopy; Author-Supplied Keyword: SiGe alloy films; Author-Supplied Keyword: Strain relaxation; Author-Supplied Keyword: Transmission electron microscopy; NAICS/Industry Codes: 327992 Ground or Treated Mineral and Earth Manufacturing; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7817201&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wapner, Phillip G. AU - Hoffman, Wesley P. T1 - Hydraulic actuation based on flow of non-wetting fluids in micro-channels JO - Sensors & Actuators B: Chemical JF - Sensors & Actuators B: Chemical Y1 - 2002/06/20/ VL - 85 IS - 1/2 M3 - Article SP - 52 SN - 09254005 AB - The behavior of non-wetting fluids in micro-channels can be utilized to create an unusual form of micro-hydraulic technology that enables fabrication of various kinds of micro-actuators and micro-bearings. In addition, this same technology can be used to construct micro-pumps capable of generating flows of wetting fluids in micro-channels and to manipulate and control these flows. [Copyright &y& Elsevier] AB - Copyright of Sensors & Actuators B: Chemical is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUID dynamics KW - HYDRAULICS KW - ACTUATORS KW - BEARINGS (Machinery) KW - Actuators KW - Micro-hydraulic technology KW - Non-wetting fluids N1 - Accession Number: 7812832; Wapner, Phillip G. 1 Hoffman, Wesley P. 2; Email Address: wesley.hoffman@edwards.af.mil; Affiliation: 1: ERC Inc., 10 E. Saturn Blvd., Edwards AFB, CA 93524-7680, USA 2: Air Force Research Laboratory, AFRL/PRSM, Edwards AFB, CA 93524-7680, USA; Source Info: Jun2002, Vol. 85 Issue 1/2, p52; Subject Term: FLUID dynamics; Subject Term: HYDRAULICS; Subject Term: ACTUATORS; Subject Term: BEARINGS (Machinery); Author-Supplied Keyword: Actuators; Author-Supplied Keyword: Micro-hydraulic technology; Author-Supplied Keyword: Non-wetting fluids; NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing; NAICS/Industry Codes: 332991 Ball and Roller Bearing Manufacturing; NAICS/Industry Codes: 423840 Industrial Supplies Merchant Wholesalers; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7812832&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tolle, Tia Benson AU - Anderson, David P. T1 - Morphology development in layered silicate thermoset nanocomposites JO - Composites Science & Technology JF - Composites Science & Technology Y1 - 2002/06// VL - 62 IS - 7/8 M3 - Article SP - 1033 SN - 02663538 AB - The role of processing temperature on the morphology development of organically modified montmorillonite-epoxy nanocomposites was examined to determine the sensitivity of exfoliation to processing and the potential to achieve desired morphologies through processing routes. In situ small-angle X-ray scattering studies were performed to relate the initiation and levels of exfoliated morphologies with time and temperature. Scattering data was correlated with key stages in morphology development to provide insight into the process-morphology relationship. Absolute temperature as well as heating rate was shown to directly affect the development of exfoliated nanocomposite morphology. [Copyright &y& Elsevier] AB - Copyright of Composites Science & Technology is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EPOXY compounds KW - CHEMICAL peel KW - MONTMORILLONITE KW - Nanocomposite N1 - Accession Number: 7799701; Tolle, Tia Benson 1; Email Address: tia.bensontolle@wpafb.af.mil Anderson, David P. 2; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, USA 2: University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA; Source Info: Jun2002, Vol. 62 Issue 7/8, p1033; Subject Term: EPOXY compounds; Subject Term: CHEMICAL peel; Subject Term: MONTMORILLONITE; Author-Supplied Keyword: Nanocomposite; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7799701&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Samuels, Steven M. AU - Gibb, Randall W. T1 - Self-Efficacy Assessment and Generalization in Physical Education Courses. JO - Journal of Applied Social Psychology JF - Journal of Applied Social Psychology Y1 - 2002/06// VL - 32 IS - 6 M3 - Article SP - 1314 EP - 1327 SN - 00219029 AB - Physical education courses can have effects that generalize past their immediate task as measured by increases in domain-specific self-efficacy. It was predicted that competitive combative courses like boxing would be more likely to have skills generalize to other domains than noncontact courses like swimming. A Physical Education Self-Efficacy Scale was created that focused on 2 different domains of self-efficacy: 1 specific to the course (physicality), and 1 in a disparate domain (leadership initiative). Students were given the scale before and after the 2 different courses. Results indicate that there were small but significant increases in both subscales for students enrolled in boxing, but not for students enrolled in swimming. Physicality self-efficacy also correlated strongly with performance. Implications and mechanisms for generalization of self-efficacy to neighboring domains are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Social Psychology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SELF-efficacy KW - PHYSICAL education KW - APPLIED psychology KW - BOXING KW - SWIMMING N1 - Accession Number: 7691689; Samuels, Steven M. 1; Email Address: Steven.Samuels@usafa.af.mil Gibb, Randall W. 1; Affiliation: 1: Department of Behavioral Sciences and Leadership, United States Air Force Academy; Source Info: Jun2002, Vol. 32 Issue 6, p1314; Subject Term: SELF-efficacy; Subject Term: PHYSICAL education; Subject Term: APPLIED psychology; Subject Term: BOXING; Subject Term: SWIMMING; NAICS/Industry Codes: 611620 Sports and Recreation Instruction; Number of Pages: 14p; Illustrations: 1 Chart; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7691689&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wright, P.K. AU - Rosenberger, A.H T1 - Modeling thermal exposure effects on fatigue of gamma titanium aluminides JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2002/06// VL - 329-331 M3 - Article SP - 538 SN - 09215093 AB - Aircraft engine applications of gamma titanium aluminide alloys require these materials to undergo extended periods of high temperature exposure in air. In order to determine whether gamma alloys will function satisfactorily in such applications, the effects of long-time air exposure need to be understood, and quantified. To date, investigations in this area have been conducted on cast Ti–48Al–2Nb–2Cr and wrought Alloy 395. Both alloys showed reductions in fatigue capability that tended to peak in the intermediate temperature (∼540 °C) range, with smaller or no reductions at lower or higher temperatures. This paper develops a model for fatigue of thermally exposed gamma alloys based on propagation of surface cracks initiating from an embrittled surface layer. The model successfully predicted the observed maximum effect at intermediate temperature and provides quantitative agreement with the observed post-exposure fatigue capability. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - ALUMINUM alloys KW - Exposure effects KW - Fatigue KW - Fatigue crack growth modeling KW - Gamma titanium aluminides N1 - Accession Number: 7877092; Wright, P.K. 1 Rosenberger, A.H 2; Affiliation: 1: GE Aircraft Engines, Materials and Processes Engineering Department, 1 Neumann Way, Mail Stop G50, Cincinnati, OH 45215-6301, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLN, Wright-Patterson AFB, Dayton, OH, USA; Source Info: Jun2002, Vol. 329-331, p538; Subject Term: TITANIUM alloys; Subject Term: ALUMINUM alloys; Author-Supplied Keyword: Exposure effects; Author-Supplied Keyword: Fatigue; Author-Supplied Keyword: Fatigue crack growth modeling; Author-Supplied Keyword: Gamma titanium aluminides; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7877092&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Putthanarat, S. AU - Zarkoob, S. AU - Magoshi, J. AU - Chen, J.A. AU - Eby, R.K. AU - Stone, M. AU - Adams, W.W. T1 - Effect of processing temperature on the morphology of silk membranes JO - Polymer JF - Polymer Y1 - 2002/06// VL - 43 IS - 12 M3 - Article SP - 3405 SN - 00323861 AB - A concise literature survey concerning the processing and uses of silk membranes is presented in this note together with initial observations of new morphological data for the effect of processing temperature on morphology. Liquid silk from the middle section of the Middle Division of the silk gland of Bombyx mori was cast onto glass plates at 20, 40, 50, 60 and 80 °C. Silk from the anterior and posterior sections was cast at 20 °C. Samples cast at 20 °C exhibit particles, grains, nanofibrils and an irregular morphology. Each exhibits approximately the same dimensions for all the samples. Samples cast above 20 °C do not exhibit the irregular morphology. Samples cast above 50 °C exhibit larger grains and larger, more densely packed nanofibrils. All these changes might result from conversion of the amorphous structure to the β-pleated structure (Silk II). The nanofibrils appear to be self-assembled bio-nanofibrils. Membranes of regenerated fibroin treated with aqueous methanol solution exhibit grains and apparent nanofibrils. Opportunities for further work are pointed out. [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SILK KW - MORPHOLOGY KW - Liquid silk KW - Membranes KW - Morphology N1 - Accession Number: 7777938; Putthanarat, S. 1 Zarkoob, S. 2 Magoshi, J. 3 Chen, J.A. 4 Eby, R.K. 1; Email Address: eby@polymer.uakron.edu Stone, M. 5 Adams, W.W. 5; Affiliation: 1: Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA 2: GE Plastics, 4160 Hacienda Drive, Pleasanton, CA 94588, USA 3: National Institute of Agrobiological Resources-CREST, Tsukuba, Ibaraki 305-8602, Japan 4: Zhejiang Sichou Institute of Technology, 88 Wen-Yi Road, Hangzhou 3100, People's Republic of China 5: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/ML, WPAFB, Dayton, OH 45433-7734, USA; Source Info: Jun2002, Vol. 43 Issue 12, p3405; Subject Term: SILK; Subject Term: MORPHOLOGY; Author-Supplied Keyword: Liquid silk; Author-Supplied Keyword: Membranes; Author-Supplied Keyword: Morphology; NAICS/Industry Codes: 313210 Broadwoven Fabric Mills; NAICS/Industry Codes: 112999 All other miscellaneous animal production; NAICS/Industry Codes: 313110 Fiber, Yarn, and Thread Mills; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7777938&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patton, S.T. AU - Zabinski, J.S. T1 - Failure mechanisms of a MEMS actuator in very high vacuum JO - Tribology International JF - Tribology International Y1 - 2002/06// VL - 35 IS - 6 M3 - Article SP - 373 SN - 0301679X AB - The tribochemical and mechanical origins of wear of a microelectromechanical systems (MEMS) actuator (electrostatic lateral output motor) operated in very high vacuum (10−7 torr) are reported in this study. Failure mechanisms in vacuum were determined and then compared to those in dry air, which is one of the harshest environments for causing early failure. Durability in vacuum was poor, even worse than that in dry air. Poor durability in vacuum is related to the kinetics of wear and reformation of the native oxide at asperity contacts. Devices failed due to catastrophic wear in vacuum, and more wear debris was generated than in dry air. There was a fundamental difference in wear debris morphology for devices run in vacuum and dry air. In vacuum, wear debris took the form of pulled-out polysilicon grains. In dry air, wear debris was an agglomerate of smaller particles, which were largely comprised of SiO2. An oxide layer reformed quickly enough in the air mediated wear process to provide some protection, but resulted in oxygen rich wear debris. In vacuum, the passivating native oxide layer was removed exposing reactive areas on the surface, which led to junction formation at Si–Si asperity contacts. It is proposed that interfacial bonds formed at asperity contacts were stronger than the cohesive bonds within the polysilicon, which resulted in grain pull-out in an adhesive wear process. [Copyright &y& Elsevier] AB - Copyright of Tribology International is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MICROELECTROMECHANICAL systems KW - TRIBOLOGY KW - Microelectromechanical systems KW - Vacuum tribology KW - Wear mechanisms N1 - Accession Number: 7815886; Patton, S.T. 1; Email Address: steve.patton@afrl.af.mil Zabinski, J.S. 2; Email Address: jeffrey.zabinski@afrl.af.mil; Affiliation: 1: University of Dayton Research Institute, Dayton, OH 45469-0168, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7750, USA; Source Info: Jun2002, Vol. 35 Issue 6, p373; Subject Term: MICROELECTROMECHANICAL systems; Subject Term: TRIBOLOGY; Author-Supplied Keyword: Microelectromechanical systems; Author-Supplied Keyword: Vacuum tribology; Author-Supplied Keyword: Wear mechanisms; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7815886&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Langhoff, P.W. AU - Hinde, R.J. AU - Boatz, J.A. AU - Sheehy, J.A. T1 - Spectral theory of the chemical bond JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2002/05/31/ VL - 358 IS - 3/4 M3 - Article SP - 231 SN - 00092614 AB - New theoretical methods are reported for obtaining the binding energies of molecules and other atomic aggregates employing the spectral eigenstates and related properties of the constituent atoms in the absence of prior wave function antisymmetry. Calculations of the lowest-lying attractive and repulsive states of the electron pair bond as functions of atomic separation from chemical (exchange) to physical (van der Waals) binding regions illustrate the nature of the formalism and its convergence to values in accord with results obtained employing conventional methods. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHEMICAL bonds KW - SPECTRAL theory (Mathematics) KW - BINDING energy N1 - Accession Number: 7822553; Langhoff, P.W. 1,2; Email Address: langhoff@drifter.sdsc.edu Hinde, R.J. 3 Boatz, J.A. 2 Sheehy, J.A. 2; Affiliation: 1: San Diego Supercomputer Center, University of California, 9500 Gilman Drive, La Jolla, CA 92093-0505, USA 2: Air Force Research Laboratory, AFRL/PRSP, Edwards AFB, CA 93524-7680, USA 3: Department of Chemistry, University of Tennessee, Knoxville, TN 37996-1600, USA; Source Info: May2002, Vol. 358 Issue 3/4, p231; Subject Term: CHEMICAL bonds; Subject Term: SPECTRAL theory (Mathematics); Subject Term: BINDING energy; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7822553&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Glaser, E.R. AU - Carlos, W.E. AU - Braga, G.C.B. AU - Freitas Jr, J.A. AU - Moore, W.J. AU - Shanabrook, B.V. AU - Wickenden, A.E. AU - Koleske, D.D. AU - Henry, R.L. AU - Bayerl, M.W. AU - Brandt, M.S. AU - Obloh, H. AU - Kozodoy, P. AU - DenBaars, S.P. AU - Mishra, U.K. AU - Nakamura, S. AU - Haus, E. AU - Speck, J.S. AU - Van Nostrand, J.E. AU - Sanchez, M.A. T1 - Characterization of nitrides by electron paramagnetic resonance (EPR) and optically detected magnetic resonance (ODMR) JO - Materials Science & Engineering: B JF - Materials Science & Engineering: B Y1 - 2002/05/30/ VL - 93 IS - 1-3 M3 - Article SP - 39 SN - 09215107 AB - We will highlight our recent work on the properties of residual defects and dopants in GaN heteroepitaxial layers and on the nature of recombination from InGaN single quantum well (SQW) light emitting diodes (LEDs) through magnetic resonance techniques. Electron paramagnetic resonance (EPR) and optically detected magnetic resonance (ODMR) were performed on undoped (highly resistive and n-type) and intentionally doped (Si, Mg, or Be) GaN films grown by a variety of techniques (MOCVD, MBE, and HVPE) in order to obtain general trends and behavior. Through the spin-Hamiltonian parameters, these methods can reveal symmetry information, the character of the wave function and (ideally) the chemical identity of the defect. In addition, low temperature EPR intensities can be used to determine the neutral acceptor or donor concentrations without the need for contacts or the high temperatures required for Hall effect measurements. The ODMR was performed on both bandedge (mainly shallow donor–shallow acceptor recombination) and deep (visible and near-IR) PL bands. In spite of the radically different (non-equilibrium) growth techniques, many of the same defects were found in the various samples. Finally, earlier ODMR studies of recombination from Nichia InGaN ‘green’ and ‘blue’ LEDs were extended to include shorter (‘violet’) and longer (‘amber’) wavelength LEDs and an undoped 30 A˚ In0.3Ga0.7N/GaN heterostructure. The results provide evidence for spatially separated electrons and holes in the optically-active 30 A˚ InGaN layers under low photoexcitation conditions, likely due to localization at different potential minima in the x–y planes and/or the large strain-induced piezoelectric fields parallel to the growth direction. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - LIGHT emitting diodes KW - MAGNETIC resonance KW - GaN KW - InGaN LEDs KW - Magnetic resonance KW - p-Type doping KW - Photoluminescence N1 - Accession Number: 7796767; Glaser, E.R. 1; Email Address: glaser@bloch.nrl.navy.mil Carlos, W.E. 1 Braga, G.C.B. 1 Freitas Jr, J.A. 1 Moore, W.J. 2 Shanabrook, B.V. 1 Wickenden, A.E. 1 Koleske, D.D. 1 Henry, R.L. 1 Bayerl, M.W. 3 Brandt, M.S. 3 Obloh, H. 4 Kozodoy, P. 5 DenBaars, S.P. 5 Mishra, U.K. 5 Nakamura, S. 5 Haus, E. 6 Speck, J.S. 6 Van Nostrand, J.E. 7 Sanchez, M.A. 8; Affiliation: 1: Naval Research Laboratory, Washington, DC 20375-5347, USA 2: SFA Inc, Largo, MD 20744, USA 3: Walter Schottky Institut, Technische Universität München, D-85748 Garching, Germany 4: Fraunhofer-Institut für Angewandte Festkörperphysik, D-79108 Freiburg, Germany 5: Electrical and Computer Engineering, College of Engineering, University of California, Santa Barbara, CA 93016, USA 6: Materials Department, College of Engineering, University of California, Santa Barbara, CA 93016, USA 7: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7322, USA 8: Department of Electronic Engineering, Polytechnical University of Madrid, 28040 Madrid, Spain; Source Info: May2002, Vol. 93 Issue 1-3, p39; Subject Term: GALLIUM nitride; Subject Term: LIGHT emitting diodes; Subject Term: MAGNETIC resonance; Author-Supplied Keyword: GaN; Author-Supplied Keyword: InGaN LEDs; Author-Supplied Keyword: Magnetic resonance; Author-Supplied Keyword: p-Type doping; Author-Supplied Keyword: Photoluminescence; NAICS/Industry Codes: 334410 Semiconductor and other electronic component manufacturing; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7796767&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Seshacharyulu, T. AU - Dutta, B. T1 - Influence of prior deformation rate on the mechanism of β→α+β transformation in Ti–6Al–4V JO - Scripta Materialia JF - Scripta Materialia Y1 - 2002/05/10/ VL - 46 IS - 9 M3 - Article SP - 673 SN - 13596462 AB - Hot compression tests conducted on Ti–6Al–4V near the β transus and a wide strain rate range (10−3–100 s−1) revealed that the prior deformation rate causes a significant change in the mechanism of β→α+β phase transformation. The evolution of equiaxed α morphology after deformation at high strain rates (1–100 s−1) is explained on the basis of dislocation assisted precipitation model. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM KW - PHASE transformations (Physics) KW - MATERIALS -- Compression testing KW - MICROSTRUCTURE KW - Microstructure KW - Phase transformation KW - Strain rate KW - Titanium N1 - Accession Number: 7795311; Seshacharyulu, T. 1; Email Address: sesh@dayton.net Dutta, B. 2; Affiliation: 1: AFRL/MLMR, Materials Process Design Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7746, USA 2: Department of Material Science, Darmstadt University of Technology, Petersenstrasse 23, 64287 Darmstadt, Germany; Source Info: May2002, Vol. 46 Issue 9, p673; Subject Term: TITANIUM; Subject Term: PHASE transformations (Physics); Subject Term: MATERIALS -- Compression testing; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Phase transformation; Author-Supplied Keyword: Strain rate; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7795311&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - JONES, K. AU - TURCOTTE, J. T1 - FINITE ELEMENT MODEL UPDATING USING ANTIRESONANT FREQUENCIES JO - Journal of Sound & Vibration JF - Journal of Sound & Vibration Y1 - 2002/05/09/ VL - 252 IS - 4 M3 - Article SP - 717 SN - 0022460X AB - This paper uses antiresonant frequencies in the finite element model updating of an experimental 6-m aluminum truss and analyzes the physical correctness of the updated model by using it to detect damage. Rigid elements are used to simplify the modelling of welded joints, and their dimensions are used as parameters in an iterative update based on eigenvalue and antiresonance sensitivities. An update using both natural frequencies and antiresonant frequencies is shown to produce a 48% better correlation to experimental frequency response functions (FRFs) than an update that uses only natural frequencies. The antiresonant updated model is used to predict FRFs for the truss in 112 damaged configurations. Pattern classification and curve-fit algorithms for damage detection are tested. The curve-fit method correctly identified damage 92·6% of the time compared to 76·1% for the pattern classifier. The high quality of the model is attributed to the use of rigid elements that are updated using antiresonant frequencies. [Copyright &y& Elsevier] AB - Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RESONANT vibration KW - FINITE element method KW - MECHANICAL models N1 - Accession Number: 8499655; JONES, K. 1 TURCOTTE, J. 2; Affiliation: 1: Propulsion Directorate, Air Force Research Laboratory, 1950 Fifth Street, Wright Patterson AFB, OH, 45433-7251, U.S.A. 2: Air Vehicles Directorate, Air Force Research Laboratory, 2130 Eighth Street, Wright Patterson AFB, OH, 45433-7542, U.S.A.; Source Info: May2002, Vol. 252 Issue 4, p717; Subject Term: RESONANT vibration; Subject Term: FINITE element method; Subject Term: MECHANICAL models; Number of Pages: 11p; Document Type: Article L3 - 10.1006/jsvi.2001.3697 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8499655&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Weyburne, David W. AU - Paduano, Qing T1 - A new method for predicting thermal flow stability: application to a heated rotating disk JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2002/05// VL - 240 IS - 3/4 M3 - Article SP - 569 SN - 00220248 AB - In this paper, an approximate analytical formulation is used to develop criteria for predicting thermal flow stability of a heated rotating disk reactor. For fluid flow directed vertically onto a heated horizontal rotating disk, gravitationally induced thermal recirculation results if the density difference between the disk and the incoming gas stream overcomes the stabilizing influence of the viscous forces. From both a fundamental and a practical standpoint, one would like a simple rule that predicts the flow regimes that are free of thermal recirculations. The new stability criteria are based on a variable property similarity transform that makes it possible to obtain approximate analytical solutions to the flow-governing equations. Stability criteria are developed by integrating and combining various terms of the resulting approximate equations. The new stability criteria developed herein are compared to existing criteria as well as to experimental results. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METAL organic chemical vapor deposition KW - ROTATING disks KW - A1. Process optimization KW - A3. Metalorganic chemical vapor deposition KW - A3. Vapor phase epitaxy KW - B2. Semiconducting III–V materials N1 - Accession Number: 7797133; Weyburne, David W.; Email Address: david.weyburne@hanscom.af.mil Paduano, Qing 1; Affiliation: 1: Air Force Research Laboratory, SNHC, 80 Scott Drive, Hanscom AFB, MA 01731, USA; Source Info: May2002, Vol. 240 Issue 3/4, p569; Subject Term: METAL organic chemical vapor deposition; Subject Term: ROTATING disks; Author-Supplied Keyword: A1. Process optimization; Author-Supplied Keyword: A3. Metalorganic chemical vapor deposition; Author-Supplied Keyword: A3. Vapor phase epitaxy; Author-Supplied Keyword: B2. Semiconducting III–V materials; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7797133&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - GORDNIER, R. E. AU - VISBAL, M. R. T1 - DEVELOPMENT OF A THREE-DIMENSIONAL VISCOUS AEROELASTIC SOLVER FOR NONLINEAR PANEL FLUTTER JO - Journal of Fluids & Structures JF - Journal of Fluids & Structures Y1 - 2002/05// VL - 16 IS - 4 M3 - Article SP - 497 SN - 08899746 AB - A new three-dimensional (3-D) viscous aeroelastic solver for nonlinear panel flutter is developed in this paper. A well-validated full Navier–Stokes code is coupled with a finite-difference procedure for the von Karman plate equations. A subiteration strategy is employed to eliminate lagging errors between the fluid and structural solvers. This approach eliminates the need for the development of a specialized, tightly coupled algorithm for the fluid/structure interaction problem. The new computational scheme is applied to the solution of inviscid two-dimensional panel flutter problems for subsonic and supersonic Mach numbers. Supersonic results are shown to be consistent with the work of previous researchers. Multiple solutions at subsonic Mach numbers are discussed. Viscous effects are shown to raise the flutter dynamic pressure for the supersonic case. For the subsonic viscous case, a different type of flutter behavior occurs for the downward deflected solution with oscillations occurring about a mean deflected position of the panel. This flutter phenomenon results from a true fluid/structure interaction between the flexible panel and the viscous flow above the surface. Initial computations have also been performed for inviscid, 3-D panel flutter for both supersonic and subsonic Mach numbers. [Copyright &y& Elsevier] AB - Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUTTER (Aerodynamics) KW - STOKES equations N1 - Accession Number: 7923292; GORDNIER, R. E. 1 VISBAL, M. R. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson AFB, OH, 45433-7913, U.S.A.; Source Info: May2002, Vol. 16 Issue 4, p497; Subject Term: FLUTTER (Aerodynamics); Subject Term: STOKES equations; Number of Pages: 31p; Document Type: Article L3 - 10.1006/jfls.2000.0434 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7923292&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Menon, V.M. AU - Ram-Mohan, L.R. AU - Goodhue, W.D. AU - Gatesman, A.J. AU - Karakashian, A.S. T1 - Role of interface phonons in quantum cascade terahertz emitters JO - Physica B JF - Physica B Y1 - 2002/05// VL - 316-317 M3 - Article SP - 212 SN - 09214526 AB - We present evidence of terahertz emission from electrically injected GaAs/AlGaAs quantum cascade structures employing interface phonons for depopulation. Electroluminescence is observed at 17.5 meV (4.2 THz or 71 μm) with full-width at half-maximum of 1.6 meV at T=10 K. In our three-level cascade structures, the lower two electronic levels are designed to be in resonance with the higher energy AlAs-like interface phonon modes. Theoretical simulations indicate that the possibility of achieving population inversion between the upper two electronic states is enhanced by the utilization of the extremely fast interface phonon-mediated depopulation scheme. We also experimentally verify the presence of hybrid phonons in the cascade structure. [Copyright &y& Elsevier] AB - Copyright of Physica B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PHONONS KW - LASER beams KW - Interface phonons KW - Intersubband KW - Quantum cascade laser KW - Terahertz N1 - Accession Number: 8775242; Menon, V.M. 1; Email Address: vmenon@princeton.edu Ram-Mohan, L.R. 2,3 Goodhue, W.D. 1 Gatesman, A.J. 4 Karakashian, A.S. 1; Affiliation: 1: Photonics Center and Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, MA 01854, USA 2: Departments of Physics, Worcester Polytechnic Institute, Worcester, MA 01609, USA 3: Air Force Research Laboratory, Sensors Directorate, Wright Patterson Air Force Base, OH 45433, USA 4: Submillimeter-Wave Technology Laboratory, University of Massachusetts Lowell, Lowell, MA 01854, USA; Source Info: May2002, Vol. 316-317, p212; Subject Term: PHONONS; Subject Term: LASER beams; Author-Supplied Keyword: Interface phonons; Author-Supplied Keyword: Intersubband; Author-Supplied Keyword: Quantum cascade laser; Author-Supplied Keyword: Terahertz; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8775242&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ahoujja, M. AU - McFall, J.L. AU - Yeo, Y.K. AU - Hengehold, R.L. AU - Van Nostrand, J.E. T1 - Electrical and optical investigation of MBE grown Si-doped AlxGa1−xN as a function of Al mole fraction up to 0.5 JO - Materials Science & Engineering: B JF - Materials Science & Engineering: B Y1 - 2002/04/30/ VL - 91/92 M3 - Article SP - 285 SN - 09215107 AB - Si-doped AlxGa1−xN grown by gas source MBE was investigated as a function of Al mole fraction up to 0.5 using temperature dependent Hall effect (TDH) and cathodoluminescence measurements. The band gap energies for the AlxGa1−xN layers estimated from the bound exciton peaks agree well with the linearly extrapolated band gaps only for x≤0.3. TDH measurements reveal the presence of a highly degenerate n-type region at the AlxGa1−xN/sapphire interface. The donor concentrations of AlxGa1−xN layers are estimated to be 4.5, 5.0, 15, 19, and 8×1018 cm−3 for x=0.1, 0.2, 0.3, 0.4, and 0.5, respectively, compared with the nominal doping value of 1018 Si cm−3. The activation energies of the Si donors are 6, 11, 40, 60, and 68 meV for x=0.1 0.2, 0.3, 0.4, and 0.5, respectively. Both the electrical and optical measurements indicate that good quality AlxGa1−xN films can be grown for x up to 0.3 by gas source MBE using a sapphire substrate and an AlN buffer layer, but lesser quality films are obtained for x>0.3. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: B is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM nitride KW - MOLECULAR beam epitaxy KW - Cathodoluminescence KW - Doping effects KW - Gallium nitride KW - Hall effect KW - Molecular beam epitaxy KW - Nitrides KW - Optical properties N1 - Accession Number: 7768769; Ahoujja, M. 1 McFall, J.L. 2 Yeo, Y.K. 3; Email Address: yung.yeo@afit.edu Hengehold, R.L. 3 Van Nostrand, J.E. 2; Affiliation: 1: Department of Physics, University of Dayton, Dayton, OH, USA 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA 3: Air Force Institute of Technology, Wright-Patterson Air Force Base, OH, USA; Source Info: Apr2002, Vol. 91/92, p285; Subject Term: GALLIUM nitride; Subject Term: MOLECULAR beam epitaxy; Author-Supplied Keyword: Cathodoluminescence; Author-Supplied Keyword: Doping effects; Author-Supplied Keyword: Gallium nitride; Author-Supplied Keyword: Hall effect; Author-Supplied Keyword: Molecular beam epitaxy; Author-Supplied Keyword: Nitrides; Author-Supplied Keyword: Optical properties; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7768769&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hinde, Robert J. AU - Anderson, David T. AU - Tam, Simon AU - Fajardo, Mario E. T1 - Probing quantum solvation with infrared spectroscopy: infrared activity induced in solid parahydrogen by N2 and Ar dopants JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2002/04/22/ VL - 356 IS - 3/4 M3 - Article SP - 355 SN - 00092614 AB - We present the first high-resolution study of the infrared (IR) absorption spectra of solid parahydrogen matrices containing low concentrations of N2 or Ar impurities. The spectra reveal dopant-induced absorption features that acquire IR activity through short-range isotropic vibrational transition dipole moments arising from dopant–H2 intermolecular interactions. These dopant-induced features provide new insights into the perturbation of the vibron bands of the H2 matrix by chemical impurities, and thus into the physics of solvation in a quantum solid. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSORPTION spectra KW - HIGH resolution spectroscopy N1 - Accession Number: 7793198; Hinde, Robert J. 1; Email Address: rhinde@utk.edu Anderson, David T. 2 Tam, Simon 3 Fajardo, Mario E. 3; Affiliation: 1: Department of Chemistry, University of Tennessee, 552 Buehler Hall, Knoxville, TN 37996-1600, USA 2: Department of Chemistry, University of Wyoming, Laramie, WY 82071-3838, USA 3: U.S. Air Force Research Laboratory, AFRL/PRSP, Edwards AFB, CA 93524-7680, USA; Source Info: Apr2002, Vol. 356 Issue 3/4, p355; Subject Term: ABSORPTION spectra; Subject Term: HIGH resolution spectroscopy; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7793198&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Parthasarathy, T.A. AU - Mendiratta, M.G. AU - Dimiduk, D.M. T1 - Oxidation mechanisms in Mo-reinforced Mo5SiB2(T2)–Mo3Si alloys JO - Acta Materialia JF - Acta Materialia Y1 - 2002/04/19/ VL - 50 IS - 7 M3 - Article SP - 1857 SN - 13596454 AB - Results of a systematic investigation of the oxidation in a Mo–Si–B alloy containing the three phases, Mo, Mo3Si, and Mo5SiB2 (T2) are presented. The relative kinetics of B-containing silica-scale formation, permeation of MoO3 through the viscous scale, the viscosity of the B-containing SiO2 scale, volatilization of MoO3 and B2O3 from the silica scale, are identified as key parameters that determine the kinetics of the oxidation of the alloy in the temperature range of 500–1300 °C. The oxidation is worst in the intermediate temperature range, 650–750 °C, where MoO3 begins to volatilize but B2O3 does not, resulting in gaseous MoO3 bubbling through a low viscosity borosilicate scale. In this temperature range, the scale provides insufficient protection suggesting that attempts to improve the oxidation resistance of this system must focus on this temperature range. [ABSTRACT FROM AUTHOR] AB - Copyright of Acta Materialia is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OXIDATION KW - MOLYBDENUM alloys KW - SILICON alloys KW - Boron KW - Mechanism KW - Mo-reinforced Mo5SiB2 (T2)-Mo3 Si alloy KW - Oxidation KW - Silicon N1 - Accession Number: 7774501; Parthasarathy, T.A.; Email Address: triplicane.parthasarathy@afrl.af.mil Mendiratta, M.G. 1 Dimiduk, D.M. 1; Affiliation: 1: AFRL/MLLM, Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Apr2002, Vol. 50 Issue 7, p1857; Subject Term: OXIDATION; Subject Term: MOLYBDENUM alloys; Subject Term: SILICON alloys; Author-Supplied Keyword: Boron; Author-Supplied Keyword: Mechanism; Author-Supplied Keyword: Mo-reinforced Mo5SiB2 (T2)-Mo3 Si alloy; Author-Supplied Keyword: Oxidation; Author-Supplied Keyword: Silicon; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 12p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7774501&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ndap, J.-O. AU - Chattopadhyay, K. AU - Adetunji, O.O. AU - Zelmon, D.E. AU - Burger, A. T1 - Thermal diffusion of Cr2+ in bulk ZnSe JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2002/04/15/ VL - 240 IS - 1/2 M3 - Article SP - 176 SN - 00220248 AB - Cr2+:ZnSe is now known as a room-temperature widely tunable solid-state mid-infrared laser material. Optimization of laser performance requires first and foremost optimization of the Cr2+-doping level in the crystals. A simple theoretical model has been developed for evaluation of the thermal diffusivity of Cr2+ ions in bulk ZnSe single crystals and polycrystalline window materials, from optical absorption measurements in the 1200–2800 nm spectral region. Sputtered metallic chromium and powders have been used as dopant sources. Diffusion appears to be faster in polycrystalline materials than in single crystals for annealing temperatures below 910°C. The activation energy, which is lower in polycrystals, depends on the nature of the dopant source. For mid-IR laser application, the model predicts for example, non-negligible optical losses due to passive self-absorption in the 2000–3000 nm spectral region for chromium-doped polycrystalline materials after annealing at temperatures above 900°C for 1.75 days. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIFFUSION KW - CRYSTAL growth KW - INORGANIC compounds KW - A1. Diffusion KW - A1. Doping KW - A1. Impurities KW - B1. Inorganic compounds KW - B1. Zinc compounds KW - B2. Semiconducting II–VI materials KW - B3. Solid state lasers N1 - Accession Number: 7797077; Ndap, J.-O. 1 Chattopadhyay, K. 1 Adetunji, O.O. 1 Zelmon, D.E. 2 Burger, A. 1; Email Address: aburger@fisk.edu; Affiliation: 1: Department of Physics, Center for Photonic Materials and Devices, Fisk University, Nashville, TN 37208-3051, USA 2: Air Force Research Laboratory, WPAFB, OH 45433-7707, USA; Source Info: Apr2002, Vol. 240 Issue 1/2, p176; Subject Term: DIFFUSION; Subject Term: CRYSTAL growth; Subject Term: INORGANIC compounds; Author-Supplied Keyword: A1. Diffusion; Author-Supplied Keyword: A1. Doping; Author-Supplied Keyword: A1. Impurities; Author-Supplied Keyword: B1. Inorganic compounds; Author-Supplied Keyword: B1. Zinc compounds; Author-Supplied Keyword: B2. Semiconducting II–VI materials; Author-Supplied Keyword: B3. Solid state lasers; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7797077&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - James, Malcolm AU - Carretta, Thomas R. T1 - g2K. JO - Human Performance JF - Human Performance Y1 - 2002/04// VL - 15 IS - 1/2 M3 - Article SP - 3 EP - 23 PB - Taylor & Francis Ltd SN - 08959285 AB - To answer the questions posed by the organizers of the millennial debate on g, or general cognitive ability, we begin by briefly reviewing its history. We tackle the question of what g is by addressing g as a psychometric score and examining its psychological and physiological correlates. Then tacit knowledge and other non-g characteristics are discussed. Next, we review the practical utility of g in personnel selection and conclude by explaining its importance to both organizations and individuals. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Performance is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INTELLECT KW - COGNITION N1 - Accession Number: 6677346; James, Malcolm 1 Carretta, Thomas R. 2; Affiliation: 1: Center for Leadership Studies Our Lady of the Lake University 2: Air Force Research Laboratory, Wright-Patterson AFB, Ohio; Source Info: 2002, Vol. 15 Issue 1/2, p3; Subject Term: INTELLECT; Subject Term: COGNITION; Number of Pages: 21p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=6677346&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wang, C.R. AU - Yang, J.-M. AU - Hoffman, W. T1 - Thermal stability of refractory carbide/boride composites JO - Materials Chemistry & Physics JF - Materials Chemistry & Physics Y1 - 2002/04// VL - 74 IS - 3 M3 - Article SP - 272 SN - 02540584 AB - The thermal stability of refractory carbide/boride composites in oxidizing environment was analyzed. The multi-component thermodynamic stability diagrams for the complex (Hf, Ta, Zr, Si)–C(B)–O composite systems were generated using the proposed linear inequality method. In this method, the stability area of compound is the solution of a set of linear inequalities which is directly obtained from the free energy changes of general chemical reactions. The generated thermodynamic stability diagrams were used to analyze the formation of multilayer oxide scale in HfC–TaC and ZrB2–SiC composites, and correlated with experimental results. [Copyright &y& Elsevier] AB - Copyright of Materials Chemistry & Physics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPOSITE materials KW - THERMOELASTICITY KW - A–B–O ternary systems KW - HfC–TaC KW - ZrB2–SiC N1 - Accession Number: 7753658; Wang, C.R. 1 Yang, J.-M. 1 Hoffman, W. 2; Affiliation: 1: Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095-1595, USA 2: Air Force Research Laboratory, Edward Air Force Base, Los Angeles, CA 93524-7680, USA; Source Info: Apr2002, Vol. 74 Issue 3, p272; Subject Term: COMPOSITE materials; Subject Term: THERMOELASTICITY; Author-Supplied Keyword: A–B–O ternary systems; Author-Supplied Keyword: HfC–TaC; Author-Supplied Keyword: ZrB2–SiC; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7753658&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, M.Y. AU - Bai, Z. AU - Tan, S.C. AU - Unroe, M.R. T1 - Friction and wear scar analysis of carbon nanofiber-reinforced polymeric composite coatings on alumina/aluminum composite JO - Wear JF - Wear Y1 - 2002/04// VL - 252 IS - 7/8 M3 - Article SP - 624 SN - 00431648 AB - Alumina/aluminum based composites with excellent physical and mechanical properties offer great potential for lightweight, wear resistant, and high temperature applications. The objective of the present research was to investigate a suitable coating material to provide a low coefficient of friction (COF) during sliding contact. The friction behavior of carbon nanofiber-reinforced aerospace polymer coatings prepared by the spin coating technique were investigated. Polymethylmethacrylate (PMMA), bis A polycarbonate, and two biphenyl endcapped poly(arylene ether phosphine oxide) compositions, namely BPETPP-E and 6FETPP-E, were used as the matrices. Pin-on-disc experiments were performed between 440C stainless steel balls and disc samples of coated alumina/aluminum interpenetrating phase composites at 0.2 m/s sliding velocity, in air, at room temperature under 0.25 and 0.74 N normal load. In all cases, formation of a lubricious carbon layer and its transfer to the steel counterface was observed to result in lower COF (∼0.2–0.3). Higher levels of fiber content (40 and 60 wt.% fibers) contributed to a faster formation of this layer. Wear scar analysis showed the dual roles of the carbon nanofibers, serving as solid lubricants and as reinforcement in the coatings. The amount of debris generated and the coverage of the lubricious carbon-rich film on the scar surface was dependent on the matrix material used. Adherent and uniform coverage of a lubricious carbon-rich film at the wear contact with the least amount of debris fragments was obtained only for composite coatings using BPETPP-E and 6FETPP-E matrices. [Copyright &y& Elsevier] AB - Copyright of Wear is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FRICTION KW - ALUMINUM oxide KW - SOLID lubricants KW - Alumina/aluminum composites KW - Carbon nanofiber KW - Friction KW - Polymeric composite KW - Solid lubricant N1 - Accession Number: 7775461; Chen, M.Y. 1; Email Address: ming.chen@wpafb.af.mil Bai, Z. 2 Tan, S.C. 2 Unroe, M.R. 1; Affiliation: 1: Air Force Research Laboratory, AFRL/ML, Wright-Patterson AFB, OH 45433-7750, USA 2: Wright Materials Research Co., 1187 Richfield Center, Beavercreek, OH 45430, USA; Source Info: Apr2002, Vol. 252 Issue 7/8, p624; Subject Term: FRICTION; Subject Term: ALUMINUM oxide; Subject Term: SOLID lubricants; Author-Supplied Keyword: Alumina/aluminum composites; Author-Supplied Keyword: Carbon nanofiber; Author-Supplied Keyword: Friction; Author-Supplied Keyword: Polymeric composite; Author-Supplied Keyword: Solid lubricant; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7775461&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Coletta, Damon T1 - Historical Encyclopedia of U.S. Presidential Use of Force, 1789-2000. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 2002/03// VL - 28 IS - 3 M3 - Book Review SP - 513 EP - 515 PB - Sage Publications Inc. SN - 0095327X AB - The article reviews the book "Historical Encyclopedia of U.S. Presidential Use of Force, 1789-2000," edited by Karl R. DeRouen Jr. KW - EXECUTIVE power KW - NONFICTION KW - DEROUEN, Karl R. KW - HISTORICAL Encyclopedia of US Presidential Use of Force 1789-2000 (Book) N1 - Accession Number: 21054929; Coletta, Damon 1; Affiliation: 1: United States Air Force Academy; Source Info: Mar2002, Vol. 28 Issue 3, p513; Subject Term: EXECUTIVE power; Subject Term: NONFICTION; Reviews & Products: HISTORICAL Encyclopedia of US Presidential Use of Force 1789-2000 (Book); NAICS/Industry Codes: 921110 Executive Offices; People: DEROUEN, Karl R.; Number of Pages: 3p; Document Type: Book Review; Full Text Word Count: 1008 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21054929&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morgan, P.E. AU - Visbal, M.R. AU - Sadayappan, P. T1 - Development and Application of a Parallel Implicit Solver for Unsteady Viscous Flows. JO - International Journal of Computational Fluid Dynamics JF - International Journal of Computational Fluid Dynamics Y1 - 2002/03// VL - 16 IS - 1 M3 - Article SP - 21 EP - 36 SN - 10618562 AB - This work investigates the performance and application of a parallel version of a three-dimensional second-order time accurate Navier-Stokes solver based on an implicit approximate-factorization Beam-Warming algorithm. A systematic incremental approach for parallelizing the serial code was developed which ensures that the parallel version of the code produces identical results to the original serial code. The current parallel scheme decomposes the grid using two-dimensional multipartitioning to evenly distribute the work across multiple processors with parallel communication via Message-Passing Interface (MPI) library. The code's performance has been assessed on three supercomputers: the IBM SP2, IBM SP3 and the Silicon Graphics Origin 2000. The solver is validated for Couette flow, and both steady and unsteady flow over a circular cylinder. Additional applications include both two- and three-dimensional flow over a stationary and a rotationally oscillating circular cylinder. This new solver enables the efficient simulation of large-scale unsteady viscous flows employing grids containing on the order of 10 7 points using available parallel supercomputers. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Computational Fluid Dynamics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NAVIER-Stokes equations KW - NUMERICAL analysis KW - FLUID dynamics KW - ALGORITHMS KW - VISCOUS flow KW - Circular cylinder KW - Computational fluid dynamics KW - Fluids KW - MPI KW - Navier-Stokes KW - Parallel processing KW - Rotational oscillating circular cylinder KW - Viscous flow N1 - Accession Number: 11548354; Morgan, P.E. 1 Visbal, M.R. 1; Email Address: visbal@vaa.wpafb.af.mil Sadayappan, P. 2; Affiliation: 1: Air Force Research Laboratory, Bldg 146, Rm 255, 2210 Eighth St, Wright-Patterson AFB, OH 45433-7521, USA 2: Department of Computer and Information Sciences, 595 Dreese Lab, 2015 Neil Avenue, The Ohio State University, Columbus, OH 43210, USA; Source Info: Mar2002, Vol. 16 Issue 1, p21; Subject Term: NAVIER-Stokes equations; Subject Term: NUMERICAL analysis; Subject Term: FLUID dynamics; Subject Term: ALGORITHMS; Subject Term: VISCOUS flow; Author-Supplied Keyword: Circular cylinder; Author-Supplied Keyword: Computational fluid dynamics; Author-Supplied Keyword: Fluids; Author-Supplied Keyword: MPI; Author-Supplied Keyword: Navier-Stokes; Author-Supplied Keyword: Parallel processing; Author-Supplied Keyword: Rotational oscillating circular cylinder; Author-Supplied Keyword: Viscous flow; Number of Pages: 16p; Illustrations: 3 Color Photographs, 4 Diagrams, 11 Charts, 19 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11548354&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Steel, Robert P. AU - Rentsch, Joan R. AU - Hendrix, William H. T1 - CROSS-LEVEL REPLICATION AND EXTENSION OF STEEL AND RENTSCH'S (1995) LONGITUDINAL ABSENCE FINDINGS. JO - Journal of Business & Psychology JF - Journal of Business & Psychology Y1 - 2002///Spring2002 VL - 16 IS - 3 M3 - Article SP - 447 EP - 456 SN - 08893268 AB - Absenteeism findings published by Steel and Rentsch (1995) were replicated and extended by correlating attitudinal, personal-demographic, and job stress variables with 34 months of work group absenteeism scores obtained on employees of a U.S. federal mint. Attitudinal and job stress results were consistent with previous findings, but results involving personal-demographic variables were not. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Business & Psychology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ABSENTEEISM (Labor) KW - LONGITUDINAL method KW - JOB stress KW - JOB satisfaction KW - STRESS (Psychology) KW - INDUSTRIAL psychology KW - absenteeism KW - job involvement. KW - job satisfaction KW - job stress KW - longitudinal study N1 - Accession Number: 12428596; Steel, Robert P. 1 Rentsch, Joan R. 2 Hendrix, William H. 3; Affiliation: 1: University of Michigan-Dearborn. 2: University of Tennessee. 3: United States Air Force Academy.; Source Info: Spring2002, Vol. 16 Issue 3, p447; Subject Term: ABSENTEEISM (Labor); Subject Term: LONGITUDINAL method; Subject Term: JOB stress; Subject Term: JOB satisfaction; Subject Term: STRESS (Psychology); Subject Term: INDUSTRIAL psychology; Author-Supplied Keyword: absenteeism; Author-Supplied Keyword: job involvement.; Author-Supplied Keyword: job satisfaction; Author-Supplied Keyword: job stress; Author-Supplied Keyword: longitudinal study; Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12428596&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pettit, Chris L. AU - Jones, Nicholas P. AU - Ghanem, Roger T1 - Detection and simulation of roof-corner pressure transients JO - Journal of Wind Engineering & Industrial Aerodynamics JF - Journal of Wind Engineering & Industrial Aerodynamics Y1 - 2002/03// VL - 90 IS - 3 M3 - Article SP - 171 SN - 01676105 AB - Many practical time series, including pressure signals measured on roof-corners of low-rise buildings in quartering winds, consist of relatively quiescent periods interrupted by intermittent transients. The dyadic wavelet transform is used to detect these transients in pressure time series and a relatively simple pattern classification scheme is used to detect underlying structure in these transients. Statistical analysis of the resulting pattern classes yields a library of signal building blocks, which are useful for detailed characterization of transients inherent to the signals being analyzed. Probability density functions describing the arrival intervals and characteristics of the detected transients are used to synthesize time series that mimic the intermittency of the original signal. In addition, the signal that remains when the detected transients are removed from the original signal is examined to suggest appropriate models for the background noise in the intermittent signal. [Copyright &y& Elsevier] AB - Copyright of Journal of Wind Engineering & Industrial Aerodynamics is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WINDS KW - WAVELETS (Mathematics) KW - UNSTEADY flow (Aerodynamics) KW - Intermittent time series KW - Pattern classification KW - Transient detection KW - Wavelet transform N1 - Accession Number: 7759562; Pettit, Chris L. 1; Email Address: chris.pettit@wpafb.af.mil Jones, Nicholas P. 2 Ghanem, Roger 2; Affiliation: 1: Air Force Research Laboratory, 2210 Eighth Street, Bldg. 146, Wright-Patterson AFB, OH 45433-7531, USA 2: Department of Civil Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA; Source Info: Mar2002, Vol. 90 Issue 3, p171; Subject Term: WINDS; Subject Term: WAVELETS (Mathematics); Subject Term: UNSTEADY flow (Aerodynamics); Author-Supplied Keyword: Intermittent time series; Author-Supplied Keyword: Pattern classification; Author-Supplied Keyword: Transient detection; Author-Supplied Keyword: Wavelet transform; Number of Pages: 30p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7759562&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Yukon, S.P. T1 - A multi-Josephson junction qubit JO - Physica C JF - Physica C Y1 - 2002/03// VL - 368 IS - 1-4 M3 - Article SP - 320 SN - 09214534 AB - We have designed a persistent supercurrent multi-Josephson junction (JJ) qubit whose circuit is based on a flattened JJ triangular prism. The Schro¨dinger equation for the 1D constrained system is equivalent to the Whittaker Hill equation, for which exact solutions have been found . Symmetric or antisymmetric coupling of the qubit to an external magnetic field, will excite only the corresponding symmetric or antisymmetric terms in the Hamiltonian. This specificity allows coupling to a system bus comprised of an LC resonant loop. We indicate how separate buses might be coupled into a larger branching network. [Copyright &y& Elsevier] AB - Copyright of Physica C is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JOSEPHSON junctions KW - SCHRODINGER equation KW - Control Z gate KW - Josephson junction KW - Qubit KW - Triangular qubit gate N1 - Accession Number: 7753975; Yukon, S.P. 1; Email Address: stanford.yukon@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Electromagnetics Technology Division, Hanscom, AFB MA 01731, USA; Source Info: Mar2002, Vol. 368 Issue 1-4, p320; Subject Term: JOSEPHSON junctions; Subject Term: SCHRODINGER equation; Author-Supplied Keyword: Control Z gate; Author-Supplied Keyword: Josephson junction; Author-Supplied Keyword: Qubit; Author-Supplied Keyword: Triangular qubit gate; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7753975&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gadir, M.A. AU - Harrison, P. AU - Soref, R.A. T1 - The advantages of p-type and design methodologies for Si1−xGex far-infrared (terahertz) quantum well infrared photodetectors (QWIPs) JO - Physica E JF - Physica E Y1 - 2002/03// VL - 13 IS - 2-4 M3 - Article SP - 1055 SN - 13869477 AB - This work is motivated by the desire to extend the operating wavelength of contemporary quantum well infrared photodetectors from the mid- (<14 μm) to the far-infrared (>20 μm) or terahertz region of the electromagnetic spectrum without recourse to liquid helium temperatures. This apparently simple objective hides many challenges which stem from the parasitic current that flows even in the absence of any illumination—the so-called dark current. [Copyright &y& Elsevier] AB - Copyright of Physica E is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - QUANTUM wells KW - THERMIONIC emission KW - Detection wavelength KW - Far-infrared KW - QWIPs KW - Terahertz KW - Thermionic emission N1 - Accession Number: 7828354; Gadir, M.A. 1; Email Address: eenmag@leeds.ac.uk Harrison, P. 1 Soref, R.A. 2; Affiliation: 1: School of Electronic and Electrical Engineering, The University of Leeds, IMP, Leeds LS2 9JT, UK 2: Sensors Directorate, AFRL/SNHC, Air Force Research Laboratory, Hanscom Air Force Base, MA 01731, USA; Source Info: Mar2002, Vol. 13 Issue 2-4, p1055; Subject Term: QUANTUM wells; Subject Term: THERMIONIC emission; Author-Supplied Keyword: Detection wavelength; Author-Supplied Keyword: Far-infrared; Author-Supplied Keyword: QWIPs; Author-Supplied Keyword: Terahertz; Author-Supplied Keyword: Thermionic emission; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7828354&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wisnowski, James W. AU - Simpson, James R. AU - Montgomery, Douglas C. T1 - A performance study for multivariate location and shape estimators. JO - Quality & Reliability Engineering International JF - Quality & Reliability Engineering International Y1 - 2002/03// VL - 18 IS - 2 M3 - Article SP - 117 EP - 129 SN - 07488017 AB - Exploratory data-analysis methods and empirical model-building techniques often attempt to determine the center and spread of multivariate data in order to determine the relative location of observations. The most common measure of multivariate location is the Mahalanobis distance. This measure uses standard mean and covariance matrix estimators for the center and spread. Outliers tend to influence these standard measures such that the corresponding Mahalanobis distances are inappropriately large for data near the true centroid, and relatively small for true outliers. As such, robust measures of location and spread are needed. Many robust measures have been proposed including the minimum covariance determinant, and the minimum volume ellipsoid. It is not clear how these methods perform under various data settings. We perform a comprehensive evaluation of the most referenced methods from the literature. A Monte Carlo simulation study is used to generate data without outliers and data with outliers dispersed separately and in groups or clouds. The methods are evaluated in terms of their ability to detect outliers and their ability not to signal false alarms for clean data. The findings from the study indicate that, although several methods display consistently solid performance, the method of Rocke and Woodruff performs the overall best. Copyright © 2002 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR] AB - Copyright of Quality & Reliability Engineering International is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIVARIATE analysis KW - ANALYSIS of variance KW - ROBUST statistics KW - DISTRIBUTION (Probability theory) KW - DETERMINANTS (Mathematics) KW - ELLIPSOIDS KW - BREAKDOWNS (Machinery) KW - breakdown KW - leverage KW - Mahalanobis distance KW - measures of location and spread KW - minimum covariance determinant KW - minimum volume ellipsoid KW - multivariate statistical analysis KW - robust statistics N1 - Accession Number: 13381461; Wisnowski, James W. 1 Simpson, James R. 2; Email Address: simpson@eng.fsu.edu Montgomery, Douglas C. 3; Affiliation: 1: Department of Mathematical Sciences, United States Air Force Academy, CO 80840, USA 2: Department of Industrial and Manufacturing Engineering, Florida State University, Florida A&M University, Tallahassee, FL 32310-6046, USA 3: Department of Industrial Engineering, Arizona State University, Tempe, AZ 85287-5906, USA; Source Info: Mar2002, Vol. 18 Issue 2, p117; Subject Term: MULTIVARIATE analysis; Subject Term: ANALYSIS of variance; Subject Term: ROBUST statistics; Subject Term: DISTRIBUTION (Probability theory); Subject Term: DETERMINANTS (Mathematics); Subject Term: ELLIPSOIDS; Subject Term: BREAKDOWNS (Machinery); Author-Supplied Keyword: breakdown; Author-Supplied Keyword: leverage; Author-Supplied Keyword: Mahalanobis distance; Author-Supplied Keyword: measures of location and spread; Author-Supplied Keyword: minimum covariance determinant; Author-Supplied Keyword: minimum volume ellipsoid; Author-Supplied Keyword: multivariate statistical analysis; Author-Supplied Keyword: robust statistics; Number of Pages: 13p; Illustrations: 6 Charts; Document Type: Article L3 - 10.1002/qre.451 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13381461&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Chen, M.Y. AU - Bai, Z. AU - Tan, S.C. T1 - Microstructure and friction behavior of polymeric composite coatings on alumina/aluminum composite JO - Surface & Coatings Technology JF - Surface & Coatings Technology Y1 - 2002/03// VL - 151/152 M3 - Article SP - 478 SN - 02578972 AB - Co-continuous alumina/aluminum-based composites with excellent physical and mechanical properties offer great potentials for lightweight, wear resistant, and high temperature applications. The development of suitable coating materials will provide low coefficient of friction to extend life under different environments for aerospace applications. In this study, carbon nanofiber reinforced polymeric composite thin films were spin coated onto the alumina/aluminum composites. Bis A polycarbonate, biphenyl ethertriphenylphosphine oxide (BPETPP-E) and fluoro ethertriphenylphosphine oxide (6FETPP-E) were chosen as the matrix materials for comparison. Tribological evaluation of alumina/aluminum composites with and without coatings was performed using pin-on-disc wear tests in lab air condition. The morphology and wear tracks on the composite discs and material transfer to the steel balls were examined. [Copyright &y& Elsevier] AB - Copyright of Surface & Coatings Technology is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ALUMINUM oxide KW - POLYMERIC composites KW - COMPOSITE materials KW - SURFACE coatings KW - Alumina/aluminum composite KW - Coating KW - Friction KW - Polymeric composite N1 - Accession Number: 7759352; Chen, M.Y. 1; Email Address: ming.chen@wpafb.af.mil Bai, Z. 2 Tan, S.C. 2; Affiliation: 1: Air Force Research Laboratory, AFRL/MLBT, Wright Patterson AFB, OH 45433-7750, USA 2: Wright Materials Research Co., 1187 Richfield Center, Beavercreek OH 45430, USA; Source Info: Mar2002, Vol. 151/152, p478; Subject Term: ALUMINUM oxide; Subject Term: POLYMERIC composites; Subject Term: COMPOSITE materials; Subject Term: SURFACE coatings; Author-Supplied Keyword: Alumina/aluminum composite; Author-Supplied Keyword: Coating; Author-Supplied Keyword: Friction; Author-Supplied Keyword: Polymeric composite; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 327910 Abrasive Product Manufacturing; NAICS/Industry Codes: 325510 Paint and Coating Manufacturing; Number of Pages: 5p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7759352&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Strong, Karla L. AU - Zabinski, Jeffrey S. T1 - Characterization of annealed pulsed laser deposited (PLD) thin films of cesium oxythiomolybdate (Cs2MoOS3) JO - Thin Solid Films JF - Thin Solid Films Y1 - 2002/03// VL - 406 IS - 1/2 M3 - Article SP - 164 SN - 00406090 AB - Cesium oxythiomolybdate (Cs2MoOS3) is under consideration as a high temperature solid lubricant for silicon nitride bearings. However, Cs2MoOS3 oxidizes below the proposed maximum use temperature of 800 °C, and the oxidation process is complex. In the presence of silicon nitride, the oxidation reactions change. The purpose of the present research was to determine the chemistry of Cs2MoOS3 coatings grown by pulsed laser deposition (PLD) on several substrates (Si3N4, SiC, Inconel, Al2O3 and ZrO2), and to determine the changes in chemistry and crystal structure after annealing in air to temperatures up to 800 °C. Many of the oxidation products identified are expected to be lubricious at elevated temperatures. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLID lubricants KW - ROLLING contact KW - SILICON nitride KW - Cesium oxythiomolybdate (Cs2MoOS3) KW - Tribology KW - X-Ray diffraction (XRD) KW - X-Ray photoelectron spectroscopy (XPS) N1 - Accession Number: 7796831; Strong, Karla L.; Email Address: karla.strong@wpafb.af.mil Zabinski, Jeffrey S. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLB 2941, P Street, Wright-Patterson Air Force Base, OH 45433-7750, USA; Source Info: Mar2002, Vol. 406 Issue 1/2, p164; Subject Term: SOLID lubricants; Subject Term: ROLLING contact; Subject Term: SILICON nitride; Author-Supplied Keyword: Cesium oxythiomolybdate (Cs2MoOS3); Author-Supplied Keyword: Tribology; Author-Supplied Keyword: X-Ray diffraction (XRD); Author-Supplied Keyword: X-Ray photoelectron spectroscopy (XPS); Number of Pages: 10p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7796831&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Strong, Karla L. AU - Zabinski, Jeffrey S. T1 - Tribology of pulsed laser deposited thin films of cesium oxythiomolybdate (Cs2MoOS3) JO - Thin Solid Films JF - Thin Solid Films Y1 - 2002/03// VL - 406 IS - 1/2 M3 - Article SP - 174 SN - 00406090 AB - High temperature solid lubricants are required for use on silicon nitride bearings with application temperatures of 600 °C and beyond. In the present research, the tribological properties of cesium oxythiomolybdate (Cs2MoOS3) thin films grown via pulsed laser deposition were studied as a function of temperature from 25 to 800 °C. When deposited on Si3N4, the coefficient of friction, μ, was 0.03 at 600 °C. When deposited on Al2O3, ZrO2 and Inconel, μ≈0.15 at 600 °C. The friction coefficient generally increased with decreasing temperature. Wear rates were low on all substrates between 400 and 600 °C. Friction remained low up to 750 °C on Si3N4 substrates, but failure occurred above 750 °C. The tribomechanisms are discussed. [Copyright &y& Elsevier] AB - Copyright of Thin Solid Films is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLID lubricants KW - TRIBOLOGY KW - Cesium oxythiomolybdate (Cs2MoOS3) KW - Raman scattering KW - Tribology KW - X-Ray photoelectron spectroscopy N1 - Accession Number: 7796832; Strong, Karla L.; Email Address: karla.strong@wpafb.af.mil Zabinski, Jeffrey S. 1; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLB, 2941 P. Street, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Mar2002, Vol. 406 Issue 1/2, p174; Subject Term: SOLID lubricants; Subject Term: TRIBOLOGY; Author-Supplied Keyword: Cesium oxythiomolybdate (Cs2MoOS3); Author-Supplied Keyword: Raman scattering; Author-Supplied Keyword: Tribology; Author-Supplied Keyword: X-Ray photoelectron spectroscopy; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7796832&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Seshacharyulu, T. AU - Medeiros, S.C. AU - Frazier, W.G. AU - Prasad, Y.V.R.K. T1 - Microstructural mechanisms during hot working of commercial grade Ti–6Al–4V with lamellar starting structure JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2002/02/28/ VL - 325 IS - 1/2 M3 - Article SP - 112 SN - 09215093 AB - The hot deformation behavior of commercial grade Ti–6Al–4V with a lamellar starting microstructure is studied in the temperature range 750–1100 °C and strain rate range 3×10−4–10 s−1 with a view to model the microstructural evolution. On the basis of flow stress data obtained as a function of temperature and strain rate in compression, a processing map for hot working has been developed. In the ranges 800–975 °C and 3×10−4–10−2 s−1, globularization of lamellae occurs for which an apparent activation energy of 455 kJ mol−1 has been estimated using the kinetic rate equation. Stress-dependent thermal activation analyses proposed by Scho¨ck and Cocks et al. have shown that the apparent activation energies are in the range 160–245 kJ mol−1 and the normalized activation volumes are in the range 20–80, which suggest that cross-slip is the rate controlling process during globularization. The variation of primary α grain size with Zener–Hollomon parameter (Z) in the globularization region exhibited a linear relationship on a log–log scale. At strain rates slower than 10−1 s−1 and temperatures below 900 °C, cracking at the prior β grain boundaries/triple junctions occurs, which sets the lower limits for globularization. At strain rates higher than 10−1 s−1 in the α+β range, the material exhibited flow instabilities manifested as adiabatic shear bands. These bands are intense below 800 °C and above 1 s−1 and caused cracking along the bands. In the β phase field, dynamic recrystallization (DRX) occurs at about 1100 °C and in the strain rate range 10−3–10−1 s−1. The apparent activation energy for DRX of β is about 172 kJ mol−1 which is close to that for self-diffusion in β phase (153 kJ mol−1). The application of these results in the design of bulk metalworking processes for achieving microstructural control is discussed. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys KW - ALUMINUM alloys KW - MICROSTRUCTURE KW - Lamellar starting structure KW - Microstructural mechanisms KW - Ti–6Al–4V N1 - Accession Number: 7756763; Seshacharyulu, T.; Email Address: sesh@dayton.net Medeiros, S.C. 1 Frazier, W.G. Prasad, Y.V.R.K.; Affiliation: 1: Materials Process Design Branch (AFRL/MLMR), Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, 45433-7746, USA; Source Info: Feb2002, Vol. 325 Issue 1/2, p112; Subject Term: TITANIUM alloys; Subject Term: ALUMINUM alloys; Subject Term: MICROSTRUCTURE; Author-Supplied Keyword: Lamellar starting structure; Author-Supplied Keyword: Microstructural mechanisms; Author-Supplied Keyword: Ti–6Al–4V; NAICS/Industry Codes: 331313 Alumina Refining and Primary Aluminum Production; NAICS/Industry Codes: 331314 Secondary Smelting and Alloying of Aluminum; NAICS/Industry Codes: 331317 Aluminum rolling, drawing, extruding and alloying; NAICS/Industry Codes: 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying; Number of Pages: 14p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7756763&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Choo, Hahn AU - Rangaswamy, Partha AU - Bourke, Mark A.M. AU - Larsen, James M. T1 - Thermal expansion anisotropy in a Ti–6Al–4V/SiC composite JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2002/02/28/ VL - 325 IS - 1/2 M3 - Article SP - 236 SN - 09215093 AB - We studied the thermal expansion behavior of a Ti–6Al–4V/35 vol.% continuous SiC fiber composite using in situ high temperature neutron diffraction (ND). The lattice expansion of constituent phases within the composite was monitored from axial (parallel to the unidirectionally aligned fibers) and transverse (perpendicular to the fibers) directions during heating from room temperature (RT) to 1170 K. The phase-specific thermal expansion of the Ti–6Al–4V matrix and SiC fibers in the composite is discussed in the context of thermal load partitioning between the matrix and fibers. In the axial direction, the matrix and the fiber share the thermal load and co-expand up to about 800–900 K, above which the thermal load transfer becomes ineffective. In the transverse direction, the matrix and fibers expand independently over the whole temperature range. Using the Schapery model (J. Comp. Mater. 2 (1968) 380) and the rule-of-mixtures (ROM), the macroscopic thermal expansion of the composite is predicted and compared with the experimental results. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM KW - NEUTRON scattering KW - THERMAL expansion KW - NEUTRON diffraction KW - Composite KW - Neutron scattering KW - Schapery model KW - Thermal expansion KW - Thermal load partitioning KW - Titanium N1 - Accession Number: 7756777; Choo, Hahn 1; Email Address: choo@lanl.gov Rangaswamy, Partha 1 Bourke, Mark A.M. 1 Larsen, James M. 2; Affiliation: 1: Los Alamos National Laboratory, LANSCE-12, Mail Stop H805, Los Alamos, NM 87545, USA 2: Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA; Source Info: Feb2002, Vol. 325 Issue 1/2, p236; Subject Term: TITANIUM; Subject Term: NEUTRON scattering; Subject Term: THERMAL expansion; Subject Term: NEUTRON diffraction; Author-Supplied Keyword: Composite; Author-Supplied Keyword: Neutron scattering; Author-Supplied Keyword: Schapery model; Author-Supplied Keyword: Thermal expansion; Author-Supplied Keyword: Thermal load partitioning; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7756777&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Martinez, Christine M. AU - Eylon, Daniel AU - Nicholas, Theodore AU - Thompson, Steven R. AU - Ruschau, John J. AU - Birkbeck, Janine AU - Porter, William J. T1 - Effects of ballistic impact damage on fatigue crack initiation in Ti–6Al–4V simulated engine blades JO - Materials Science & Engineering: A JF - Materials Science & Engineering: A Y1 - 2002/02/28/ VL - 325 IS - 1/2 M3 - Article SP - 465 SN - 09215093 AB - The ingestion of debris into jet engines creates nicks and dents on the leading edges of blades and vanes. This is commonly known as foreign object damage (FOD). Such damage, which can often result in premature failure, was simulated in the laboratory using diamond cross-section axial fatigue samples that were impacted with 1 mm diameter glass beads at 305 m s−1 at either 0 or 30° angle of incidence. The samples had either a thin leading edge (LE) with a radius of 0.127 mm or a thick LE with a radius of 0.381 mm. Fatigue strength of impacted specimens showed degradation of 10–50% due to LE damage, regardless of the depth of the damage zone. FOD related impact notch depth, loss of material (LOM), shear, folds, embedded shattered glass, and microstructural damage were characterized by SEM. Fatigue strength degradation was found to be higher for the 30° impacts than for the 0° impacts. No clear correlation between notch depth or LE thickness and fatigue strength was found. [Copyright &y& Elsevier] AB - Copyright of Materials Science & Engineering: A is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM KW - METALS -- Fatigue KW - JET engines KW - Ballistic impact KW - Damage characterization KW - Fatigue strength KW - Foreign object damage KW - Titanium N1 - Accession Number: 7756804; Martinez, Christine M. 1 Eylon, Daniel 2; Email Address: eylon@udayton.edu Nicholas, Theodore 3 Thompson, Steven R. 3 Ruschau, John J. 4 Birkbeck, Janine 2,4 Porter, William J. 4; Affiliation: 1: University of Dayton, Materials Engineering, Dayton, OH 45429, USA 2: University of Dayton, Graduate Materials Engineering, 300 College Park, Dayton, OH 45429-0240, USA 3: Air Force Research Laboratory, AFRL/ML, Wright–Patterson AFB, Dayton, OH 45433, USA 4: University of Dayton Research Institute, Dayton, OH 45429, USA; Source Info: Feb2002, Vol. 325 Issue 1/2, p465; Subject Term: TITANIUM; Subject Term: METALS -- Fatigue; Subject Term: JET engines; Author-Supplied Keyword: Ballistic impact; Author-Supplied Keyword: Damage characterization; Author-Supplied Keyword: Fatigue strength; Author-Supplied Keyword: Foreign object damage; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 13p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7756804&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Boehlert, C.J. AU - Dimiduk, D.M. AU - Hemker, K.J. T1 - The phase evolution, mechanical behavior, and microstructural instability of a fully-lamellar Ti–46Al(at.%) alloy JO - Scripta Materialia JF - Scripta Materialia Y1 - 2002/02/28/ VL - 46 IS - 4 M3 - Article SP - 259 SN - 13596462 AB - A Ti–46Al(at.%) polysynthetically twinned alloy, which contained a characteristic lamellar spacing of λ=1.3 μm, was converted to a polycrystalline fully-lamellar microstructure with λ=19.9 nm using an α-phase solution treatment followed by α2+γ aging. Tensile experiments, performed on microsamples extracted from within single grains of the polycrystalline material, illustrated that ultrafine lamellae led to exceptional tensile strength. However, the ultrafine lamellae were not stable at elevated temperatures and the ultrafine material was found to have relatively poor creep resistance. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM KW - PHASE transformations (Physics) KW - Creep KW - Microsample testing KW - Microstructure KW - Phase transformations KW - Titanium N1 - Accession Number: 9097248; Boehlert, C.J. 1,2; Email Address: boehlecj@alfred.edu Dimiduk, D.M. 3 Hemker, K.J. 1; Affiliation: 1: Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA 2: School of Ceramic Engineering and Materials Science, Alfred University, Alfred, NY 14802, USA 3: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, OH 45433-7817, USA; Source Info: Feb2002, Vol. 46 Issue 4, p259; Subject Term: TITANIUM; Subject Term: PHASE transformations (Physics); Author-Supplied Keyword: Creep; Author-Supplied Keyword: Microsample testing; Author-Supplied Keyword: Microstructure; Author-Supplied Keyword: Phase transformations; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9097248&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tassev, V. AU - Bliss, D. AU - Suscavage, M. AU - Paduano, Q.S. AU - Wang, S-Q. AU - Bouthillette, L. T1 - Iodine vapor phase growth of GaN: dependence of epitaxial growth rate on process parameters JO - Journal of Crystal Growth JF - Journal of Crystal Growth Y1 - 2002/02/15/ VL - 235 IS - 1-4 M3 - Article SP - 140 SN - 00220248 AB - High quality GaN epitaxial films have been grown on sapphire using iodine vapor phase growth (IVPG). The growth mechanism has been investigated to determine the effect of pressure, flow rate, and V–III ratio on the crystalline quality of GaN epi-layers. A major distinction between this process and conventional hydride vapor phase epitaxy (HVPE) is the replacement of HCl gas by iodine as a reactant. Ammonia is the source of nitrogen, and forming gas or hydrogen is used as carrier gas. C-plane sapphire wafers with pre-deposited 1 μm MOCVD films were used as substrates. Growth conditions were investigated in the range of pressure between 1 and 0.1 atmosphere, while maintaining the same temperature gradient and mass flow rates for the reactant gases. Within these parameters, it was found that the fastest growth rate for GaN layers is obtained at vapor pressures close to equilibrium. The data indicates crystal quality is also optimized under these conditions. Crystal quality was determined from the FWHM of X-ray rocking curves and room temperature photoluminescence (PL). The crystal quality was found to improve under conditions where the ambient pressure and supersaturation approach equilibrium. [Copyright &y& Elsevier] AB - Copyright of Journal of Crystal Growth is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - GALLIUM (Metal) KW - METALLIC films KW - EPITAXY KW - A1. Characterization KW - A1. Nucleation KW - A3. Vapor phase epitaxy KW - B1. Halides KW - B1. Nitrides N1 - Accession Number: 7744956; Tassev, V. 1 Bliss, D.; Email Address: david.bliss@hanscom.af.mil Suscavage, M. 1 Paduano, Q.S. 1 Wang, S-Q. 1 Bouthillette, L. 1; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA, USA; Source Info: Feb2002, Vol. 235 Issue 1-4, p140; Subject Term: GALLIUM (Metal); Subject Term: METALLIC films; Subject Term: EPITAXY; Author-Supplied Keyword: A1. Characterization; Author-Supplied Keyword: A1. Nucleation; Author-Supplied Keyword: A3. Vapor phase epitaxy; Author-Supplied Keyword: B1. Halides; Author-Supplied Keyword: B1. Nitrides; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7744956&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kumar, Binod AU - Rodrigues, Stanley J. AU - Spry, Robert J. T1 - Dipoles and their possible effects on conductivity in polymer-ceramic composite electrolytes JO - Electrochimica Acta JF - Electrochimica Acta Y1 - 2002/02// VL - 47 IS - 8 M3 - Article SP - 1275 SN - 00134686 AB - This paper conceptualizes and discusses the physical existence of electrically active dipoles in polymer-ceramic composite electrolytes. The concept of physical existence of dipoles is supported by experimental evidences that include time dependence, dc field assisted variation, and mechanically induced effects on conductivity. [Copyright &y& Elsevier] AB - Copyright of Electrochimica Acta is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROLYTES KW - ELECTRIC conductivity KW - Charge carriers KW - Composite electrolytes KW - Conductivity KW - Dipole orientation KW - Mechanical stretching N1 - Accession Number: 7758179; Kumar, Binod 1; Email Address: kumar@udri.udayton.edu Rodrigues, Stanley J. 1 Spry, Robert J. 2; Affiliation: 1: University of Dayton Research Institute, 300 College Park, KL 501, Dayton, OH 45469-0170, USA 2: Air Force Research Laboratory, Materials Directorate, Wright-Patterson AFB, OH 45433-7750, USA; Source Info: Feb2002, Vol. 47 Issue 8, p1275; Subject Term: ELECTROLYTES; Subject Term: ELECTRIC conductivity; Author-Supplied Keyword: Charge carriers; Author-Supplied Keyword: Composite electrolytes; Author-Supplied Keyword: Conductivity; Author-Supplied Keyword: Dipole orientation; Author-Supplied Keyword: Mechanical stretching; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7758179&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ganguly, B. N. AU - Haaland, P. D. AU - Bletzinger, P. AU - Garscadden, A. T1 - Two-Color Mie-Scattering Images of Uncorrelated and Correlated Trapped Dust in Low-Frequency Helium Discharges. JO - IEEE Transactions on Plasma Science JF - IEEE Transactions on Plasma Science Y1 - 2002/02//Feb2002 Part 1 VL - 30 IS - 1 M3 - Article SP - 90 EP - 91 SN - 00933813 AB - Simultaneous two-color Mie scattering images from the particle size dependent self-assembled trapped dust particles in a low-frequency helium discharge have been measured. The dynamics of the dust ensemble during the discharge switch-off suggests that the long range order in a correlated dust phase can reduce the ion-ion and the electron-ion recombination rates on dust surface by several orders of magnitudes compared to the ambipolar or to free diffusion rates. [ABSTRACT FROM AUTHOR] AB - Copyright of IEEE Transactions on Plasma Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MIE scattering KW - LIGHT -- Scattering KW - DUST KW - DUSTY plasmas KW - PLASMA (Ionized gases) KW - ION recombination KW - GLOW discharges KW - ELECTRIC discharges KW - ELECTRIC fields KW - Glow discharge KW - laser light scattering KW - self-assembled complex N1 - Accession Number: 27151601; Ganguly, B. N. 1; Email Address: biswa.ganguly@wpath.af.mil Haaland, P. D. 1,2 Bletzinger, P. 1,3 Garscadden, A. 1; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433-7919 USA 2: Mobium Em., Louisville, CO 80027 USA 3: ISSI, Dayton OH 45440 USA; Source Info: Feb2002 Part 1, Vol. 30 Issue 1, p90; Subject Term: MIE scattering; Subject Term: LIGHT -- Scattering; Subject Term: DUST; Subject Term: DUSTY plasmas; Subject Term: PLASMA (Ionized gases); Subject Term: ION recombination; Subject Term: GLOW discharges; Subject Term: ELECTRIC discharges; Subject Term: ELECTRIC fields; Author-Supplied Keyword: Glow discharge; Author-Supplied Keyword: laser light scattering; Author-Supplied Keyword: self-assembled complex; Number of Pages: 2p; Illustrations: 2 Diagrams; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27151601&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Heinemann, M. T1 - Effects of solar wind inhomogeneities on transit times of interplanetary shock waves JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2002/02// VL - 64 IS - 3 M3 - Article SP - 315 SN - 13646826 AB - Long-term forecasting, greater than a few hours, of geomagnetic activity requires reasonably accurate estimates of the arrival times of interplanetary shock waves of solar origin. The shock waves travel through an inhomogeneous interplanetary medium. Two major sources of uncertainty in estimates of arrival times are the variations of the velocity and the density of the ambient medium. The theory of propagation of strong shock waves through inhomogeneous media relates errors of estimate of shock arrival time to the inhomogeneities and shows that increases in the velocity along the Sun–Earth line lead to decreases in transit time and increases in the density lead to increases in transit time. The uncertainties in arrival time in both cases are proportional, in the linear approximation underlying the theory, to the perturbations or uncertainties in the velocity and density. The theory is applied to shock propagation through corotating inhomogeneities and used to calculate variances of arrival times using solar wind data. Four cases with different heliocentric radial dependences of density perturbation and fiducial shock speeds are considered. Numerical results based on NSSDC OMNI data give a variance of about 12–24 h for a fiducial transit time of 48 h, depending on the model for the inhomogeneities. In the most plausible model, in which the density inhomogeneities δρ/ρ increase linearly with heliocentric radius and the fiducial shock speed is proportional to the inverse square root of the radius, the ratio of variance to transit time is about 0.25, independent of fiducial transit time. The results are in general agreement with observations, suggesting that much of the variance of observed transit times results from the influence of interplanetary inhomogeneities. [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOLAR wind KW - SHOCK waves KW - Corotating streams KW - Interplanetary shocks KW - MHD theory KW - Solar wind plasma N1 - Accession Number: 7771269; Heinemann, M. 1; Email Address: michael.heinemann@hanscom.af.mil; Affiliation: 1: Air Force Research Laboratory, Space Weather Center of Excellence, Hanscom Air Force Base, Massachusetts 01731-3010, USA; Source Info: Feb2002, Vol. 64 Issue 3, p315; Subject Term: SOLAR wind; Subject Term: SHOCK waves; Author-Supplied Keyword: Corotating streams; Author-Supplied Keyword: Interplanetary shocks; Author-Supplied Keyword: MHD theory; Author-Supplied Keyword: Solar wind plasma; Number of Pages: 11p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7771269&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lanning, David B. AU - Nicholas, Theodore AU - Haritos, George K. T1 - Effect of plastic prestrain on high cycle fatigue of Ti–6Al–4V JO - Mechanics of Materials JF - Mechanics of Materials Y1 - 2002/02// VL - 34 IS - 2 M3 - Article SP - 127 SN - 01676636 SN - 9780077221409 AB - The effect of initial plastic strain on the high cycle fatigue (HCF) lives of smooth cylindrical Ti–6Al–4V specimens is investigated. Specimens were monotonically, quasi-statically loaded under strain control in tension to produce plastic strains from 1% to 5% and under load control in compression to produce 9.5% plastic strain. A step-loading technique was then employed to establish the 106 or 107 cycle fatigue limit stress under load control conditions for stress ratios of R=0.1, 0.5 and 0.8 at frequencies of either f=50 or 400 Hz. Results are compared with baseline fatigue limit stresses for Ti–6Al–4V without prior plastic strain. Initial plastic prestrain in both tension and compression resulted in a small reduction in the fatigue limit at R=0.1, while a lesser reduction was exhibited at higher stress ratios in terms of maximum stress. [Copyright &y& Elsevier] AB - Copyright of Mechanics of Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLASTICS KW - STRAINS & stresses (Mechanics) KW - TITANIUM KW - Compression KW - High cycle fatigue KW - Plastic strain KW - Prestrain KW - Step-loading KW - Ti–6Al–4V KW - Titanium N1 - Accession Number: 7757044; Lanning, David B. 1; Email Address: lannind@erau.edu Nicholas, Theodore 2 Haritos, George K. 3; Affiliation: 1: College of Engineering, Embry-Riddle Aeronautical University, 3200 Willow Creek Road, Prescott, AZ 86301-3720, USA 2: Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7817, USA 3: Air Force Institute of Technology, Wright-Patterson AFB, OH 45433-7765, USA; Source Info: Feb2002, Vol. 34 Issue 2, p127; Subject Term: PLASTICS; Subject Term: STRAINS & stresses (Mechanics); Subject Term: TITANIUM; Author-Supplied Keyword: Compression; Author-Supplied Keyword: High cycle fatigue; Author-Supplied Keyword: Plastic strain; Author-Supplied Keyword: Prestrain; Author-Supplied Keyword: Step-loading; Author-Supplied Keyword: Ti–6Al–4V; Author-Supplied Keyword: Titanium; NAICS/Industry Codes: 326121 Unlaminated Plastics Profile Shape Manufacturing; NAICS/Industry Codes: 326199 All Other Plastics Product Manufacturing; NAICS/Industry Codes: 326198 All other plastic product manufacturing; NAICS/Industry Codes: 424610 Plastics Materials and Basic Forms and Shapes Merchant Wholesalers; NAICS/Industry Codes: 418410 Chemical (except agricultural) and allied product merchant wholesalers; NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing; NAICS/Industry Codes: 212299 All Other Metal Ore Mining; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7757044&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Fong, Hao AU - Liu, Weidong AU - Wang, Chyi-Shan AU - Vaia, Richard A. T1 - Generation of electrospun fibers of nylon 6 and nylon 6-montmorillonite nanocomposite JO - Polymer JF - Polymer Y1 - 2002/02// VL - 43 IS - 3 M3 - Article SP - 775 SN - 00323861 AB - Dissolution and reprocessing of exfoliated montmorillonite–nylon 6 (NLS) nanocomposite is demonstrated, illustrating the potential of using polymer nanocomposites as the foundation for fabricating nano- and mesoscopic structures, nanofibers in this case, and thus exerting hierarchical control of morphology and form through the combination of a nanostructured material and a nanoscale fabrication technique. Exfoliated morphology, present in the melt-fabricated NLS nanocomposite, was preserved in cast films and electrospun fibers from hexafluoroisopropanol solution. However, addition of a few percent N,N-dimethyl formamide resulted in agglomeration of the dispersed montmorillonite layers and an overall mixed morphology, demonstrating solvent partitioning and the delicate enthalpic balance necessary to maintain layer dispersion. Fibers and nanofibers of NLS nanocomposite (diameters between 100 and 500 nm) were electrospun from solution, and collected as non-woven fabrics, or as aligned yarns. Together with these cylindrical shaped fibers and nanofibers, ribbon shaped fibers (width∼10 μm, thickness∼100–200 nm) were also found in the products. The electrospinning process resulted in highly aligned montmorillonite layers (layer normal perpendicular to the fiber axis) and nylon 6 crystallites (layer normal parallel to fiber axis). [Copyright &y& Elsevier] AB - Copyright of Polymer is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - POLYMERS KW - MONTMORILLONITE KW - FORMAMIDE KW - Electrospinning KW - Nanocomposite KW - Nanofiber N1 - Accession Number: 9098171; Fong, Hao 1 Liu, Weidong 2 Wang, Chyi-Shan 3 Vaia, Richard A. 4; Email Address: richard.vaia@afrl.af.mil; Affiliation: 1: Universal Technology Corporation, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 2: Systran Federal Corporation, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA 3: University of Dayton Research Institute, 300 College Park Avenue, Dayton, OH 45469, USA 4: Air Force Research Laboratory (AFRL/MLBP), Material and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433-7750, USA; Source Info: Feb2002, Vol. 43 Issue 3, p775; Subject Term: POLYMERS; Subject Term: MONTMORILLONITE; Subject Term: FORMAMIDE; Author-Supplied Keyword: Electrospinning; Author-Supplied Keyword: Nanocomposite; Author-Supplied Keyword: Nanofiber; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9098171&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Senkov, O.N. AU - Uchic, M.D. AU - Menon, S. AU - Miracle, D.B. T1 - Crystallization kinetics of an amorphous TiAl sheet produced by PVD JO - Scripta Materialia JF - Scripta Materialia Y1 - 2002/02// VL - 46 IS - 3 M3 - Article SP - 187 SN - 13596462 AB - An amorphous, 150 μm thick freestanding sheet of a TiAl-based alloy was produced by a physical vapor deposition method. The following phase transformations were observed and analyzed using differential thermal analysis and X-ray diffraction, amorphous→body centered cubic β→hexagonal close-packed α→tetragonal γ+ordered HCP α2. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VAPOR-plating KW - TITANIUM castings KW - THERMAL analysis KW - Amorphous materials KW - Differential thermal analysis KW - Phase transformations KW - Physical vapor deposition KW - Titanium aluminide KW - X-ray diffraction N1 - Accession Number: 7740891; Senkov, O.N. 1; Email Address: oleg.senkov@wpafb.af.mil Uchic, M.D. 2 Menon, S. 1 Miracle, D.B. 2; Affiliation: 1: UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432-1894, USA 2: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLMD, Wright-Patterson AFB, OH 45433-7817, USA; Source Info: Feb2002, Vol. 46 Issue 3, p187; Subject Term: VAPOR-plating; Subject Term: TITANIUM castings; Subject Term: THERMAL analysis; Author-Supplied Keyword: Amorphous materials; Author-Supplied Keyword: Differential thermal analysis; Author-Supplied Keyword: Phase transformations; Author-Supplied Keyword: Physical vapor deposition; Author-Supplied Keyword: Titanium aluminide; Author-Supplied Keyword: X-ray diffraction; NAICS/Industry Codes: 331529 Other Nonferrous Metal Foundries (except Die-Casting); Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7740891&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Armacost, Andrew P. AU - Barnhart, Cynthia AU - Ware, Keith A. T1 - Composite Variable Formulations for Express Shipment Service Network Design. JO - Transportation Science JF - Transportation Science Y1 - 2002/02// VL - 36 IS - 1 M3 - Article SP - 1 PB - INFORMS: Institute for Operations Research SN - 00411655 AB - In this paper we describe a new approach to solving the express shipment service network design problem. Conventional polyhedral methods for network design and network loading problems do not consistently solve instances of the planning problem we consider. Under a restricted version of the problem, we transform conventional formulations to a new formulation using what we term composite variables. By removing flow decisions as explicit decisions, this extended formulation is cast purely in terms of the design elements. We establish that its linear programming relaxation gives stronger lower bounds than conventional approaches. We apply this composite variable formulation approach to the UPS Next Day Air delivery network and demonstrate potential annual cost savings in the hundreds of millions of dollars. [ABSTRACT FROM AUTHOR] AB - Copyright of Transportation Science is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SHIPMENT of goods KW - DELIVERY of goods KW - TRANSPORTATION KW - NETWORK analysis (Planning) KW - LINEAR programming KW - AIRLINE industry -- Management KW - COST control N1 - Accession Number: 6312673; Armacost, Andrew P. 1,2,3 Barnhart, Cynthia 1,2,3 Ware, Keith A. 1,2,3; Affiliation: 1: Department of Management, United States Air Force Academy, Colorado Springs, Colorado 80840. 2: Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139. 3: Operations Research Group, United Parcel Service, Louisville, Kentucky 40223.; Source Info: Feb2002, Vol. 36 Issue 1, p1; Subject Term: SHIPMENT of goods; Subject Term: DELIVERY of goods; Subject Term: TRANSPORTATION; Subject Term: NETWORK analysis (Planning); Subject Term: LINEAR programming; Subject Term: AIRLINE industry -- Management; Subject Term: COST control; NAICS/Industry Codes: 481110 Scheduled air transportation; NAICS/Industry Codes: 481111 Scheduled Passenger Air Transportation; NAICS/Industry Codes: 488990 Other support activities for transportation; NAICS/Industry Codes: 488999 All Other Support Activities for Transportation; Number of Pages: 20p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=6312673&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cliver, E.W. AU - Hudson, H.S. T1 - CMEs: How do the puzzle pieces fit together? JO - Journal of Atmospheric & Solar-Terrestrial Physics JF - Journal of Atmospheric & Solar-Terrestrial Physics Y1 - 2002/01/15/ VL - 64 IS - 2 M3 - Article SP - 231 SN - 13646826 AB - This review consists of questions to participants in the S-RAMP Symposium (S3) on CMEs and Coronal Holes, as well as to a few others, and their responses in a “town meeting” format (originally conducted on Hugh Hudson''s website). Here we deal only with CMEs. The questions we ask aim at probing the weaknesses of existing models and highlighting controversies, thereby providing guidance toward a more complete view of solar eruptions. Topics covered include: the “solar flare myth”, flux ropes, new phenomena (EIT waves, dimmings, global brightenings), helicity and sigmoids, and transequatorial loops (as sources of CMEs). Although this is a review, we''re more concerned here with what is not known than what is already agreed upon. We asked people to speculate freely in advance of the observational, analytical, and theoretical work that will provide definitive answers—this is not the standard Scientific Method at work! [Copyright &y& Elsevier] AB - Copyright of Journal of Atmospheric & Solar-Terrestrial Physics is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CORONAL mass ejections KW - SOLAR activity KW - Cornal Mass Ejections KW - Solar activity N1 - Accession Number: 7745850; Cliver, E.W. 1; Email Address: edward.cliver@hanscom.af.mil Hudson, H.S. 2; Affiliation: 1: Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA 2: SPRC/ISAS, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229, Japan; Source Info: Jan2002, Vol. 64 Issue 2, p231; Subject Term: CORONAL mass ejections; Subject Term: SOLAR activity; Author-Supplied Keyword: Cornal Mass Ejections; Author-Supplied Keyword: Solar activity; Number of Pages: 22p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7745850&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nizette, Michel AU - Erneux, Thomas AU - Gavrielides, Athanasios AU - Kovanis, Vassilios T1 - Averaged equations for injection locked semiconductor lasers JO - Physica D JF - Physica D Y1 - 2002/01/15/ VL - 161 IS - 3/4 M3 - Article SP - 220 SN - 01672789 AB - An averaging method valid for strongly nonlinear oscillators is used for the first time to describe the pulsating intensity regimes of semiconductor lasers subject to injection. Slow-time equations are derived which are valid for solutions of arbitrary amplitude. These averaged equations do not require the knowledge of a particular bifurcation point and are a good starting point for further analysis. Bifurcation points to periodic or quasiperiodic intensity oscillations are determined analytically by exploring certain limits of the parameters. Finally, we illustrate the strength and weakness of these expressions by comparing bifurcation diagrams obtained from the averaged equations and from the original laser equations. [Copyright &y& Elsevier] AB - Copyright of Physica D is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - BIFURCATION theory KW - EQUATIONS KW - NONLINEAR oscillators KW - HOPF algebras KW - Averaged equations KW - Hopf and torus bifurcations KW - Injection locked semiconductor N1 - Accession Number: 7742233; Nizette, Michel 1 Erneux, Thomas 1; Email Address: terneux@ulb.ac.be Gavrielides, Athanasios 2 Kovanis, Vassilios 2; Affiliation: 1: Optique Nonlinéaire Théorique, Université Libre de Bruxelles, Bld. du Triomphe, Campus Plaine, C.P. 231, 1050 Bruxelles, Belgium 2: Nonlinear Optics Group, Air Force Research Laboratory, 3550 Aberdeen Ave. SE, Kirtland AFB, Albuquerque, NM, 87117-5776, USA; Source Info: Jan2002, Vol. 161 Issue 3/4, p220; Subject Term: BIFURCATION theory; Subject Term: EQUATIONS; Subject Term: NONLINEAR oscillators; Subject Term: HOPF algebras; Author-Supplied Keyword: Averaged equations; Author-Supplied Keyword: Hopf and torus bifurcations; Author-Supplied Keyword: Injection locked semiconductor; Number of Pages: 17p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7742233&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Pati, Ranjit AU - Karna, Shashi P. T1 - Length-dependence of intramolecular electron transfer in σ-bonded rigid molecular rods: an ab initio molecular orbital study JO - Chemical Physics Letters JF - Chemical Physics Letters Y1 - 2002/01/10/ VL - 351 IS - 3/4 M3 - Article SP - 302 SN - 00092614 AB - The dependence of electron transfer (ET) coupling element, VAB, on the length of rigid-rod-like systems consisting of bicyclo[1.1.1]pentane (BCP), cubane (CUB), and bicyclo[2.2.2]octane (BCO) monomers, has been investigated with the use of ab initio Hartree–Fock (HF) method employing Marcus–Hush two-state (TS) model. The value of VAB decreases exponentially with increase in the number of the cage units of the σ-bonded molecules. The calculated decay constant, β, shows good agreement with previously reported data. For molecular length⩾15 A˚, the value of VAB becomes negligibly small, suggesting complete suppression of the through bond direct tunneling contribution to ET process. [Copyright &y& Elsevier] AB - Copyright of Chemical Physics Letters is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHARGE exchange KW - HARTREE-Fock approximation N1 - Accession Number: 7742206; Pati, Ranjit 1 Karna, Shashi P. 2; Email Address: shashi.karna@kirtland.af.mil; Affiliation: 1: Albuquerque High Performance Computing Center, The University of New Mexico, 1601 Central Ave, NE, Galles Bldg., Albuquerque, NM 87131 USA 2: Air Force Research Laboratory, Space Vehicles Directorate, VSSE, SE, Bldg. 914, 3550 Aberdeen Avenue, Kirtland AFB, NM 87117-5776, USA; Source Info: Jan2002, Vol. 351 Issue 3/4, p302; Subject Term: CHARGE exchange; Subject Term: HARTREE-Fock approximation; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7742206&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Albanese, R. A. AU - Banks, H. T. AU - Evans, M. V. AU - Potter, L. K. T1 - Physiologically Based Pharmacokinetic Models for the Transport of Trichloroethylene in Adipose Tissue JO - Bulletin of Mathematical Biology JF - Bulletin of Mathematical Biology Y1 - 2002/01// VL - 64 IS - 1 M3 - Article SP - 97 SN - 00928240 AB - In this paper we present three physiologically based pharmacokinetic (PBPK) models for the systemic transport of trichloroethylene (TCE), with a focus on the adipose, or fat tissue. TCE is a widespread environmental contaminant, and has been shown to produce toxic effects in both animals and humans. A key characteristic of TCE is its tendency to accumulate in fat tissue, which has a major impact on the overall systemic disposition of TCE.Here we use PBPK models to predict the dynamics of TCE in the various tissues and organs, including the adipose tissue.The first model utilizes the standard ‘perfusion-limited’ compartmental model for the fat tissue, while the second model uses a ‘diffusion-limited’ model to describe the transport through the adipose tissue. Both of these ODE models are based on ‘well-mixed’ and rapid equilibrium assumptions, and do not take into account the specific and largely heterogeneous physiology of adipose tissue. The third model we discuss is a PBPK hybrid model with an axial-dispersion type model for the adipose tissue. This PDE-based model is designed to capture key physiological heterogeneities of fat tissue, including widely varying fat cell sizes, lipid distribution, and blood flow properties. Model simulations demonstrate that this model may be well-suited to predict the experimental behavior of TCE in adipose tissue using parameter estimation techniques. [Copyright &y& Elsevier] AB - Copyright of Bulletin of Mathematical Biology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TRICHLOROETHYLENE KW - PHARMACOKINETICS N1 - Accession Number: 8502721; Albanese, R. A. 1 Banks, H. T. 2 Evans, M. V. 3 Potter, L. K. 2; Affiliation: 1: Air Force Research Laboratory, Brooks Air Force Base, San Antonio, TX 78235, U.S.A. 2: Center for Research in Scientific Computation, North Carolina State University, Raleigh, NC 27695-8205, U.S.A. 3: National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, U.S.A.; Source Info: Jan2002, Vol. 64 Issue 1, p97; Subject Term: TRICHLOROETHYLENE; Subject Term: PHARMACOKINETICS; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 35p; Document Type: Article L3 - 10.1006/bulm.2001.0268 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8502721&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schulte, M.D. AU - Clarson, S.J. AU - Natarajan, L.V. AU - Tomlin, D.W. AU - Bunning, T.J. T1 - Polymer-dispersed Liquid Crystals: Effect of Partial Matrix Fluorination on Polymer Bead-based Morphology. JO - Molecular Crystals & Liquid Crystals Science & Technology, Section A: Molecular Crystals & Liquid Crystals JF - Molecular Crystals & Liquid Crystals Science & Technology, Section A: Molecular Crystals & Liquid Crystals Y1 - 2002/01// VL - 373 IS - 1 M3 - Article SP - 155 EP - 180 PB - Taylor & Francis Ltd SN - 1058725X AB - The morphology and electrooptical properties of polymer-dispersed liquid crystals (PDLCs) with partially fluorinated polymer matrices are investigated. Films were prepared via photo-induced free-radical polymerization of an initially isotropic solution comprised of pentafunctional (5 reactive groups) acrylate monomer and nematic liquid crystal molecules. Phase separation of discrete domains of LC is induced by the photopolymerization. The film morphologies consisted of aggregated polymeric particles dispersed throughout a continuous liquid crystal medium. Changes in morphology and electrooptical properties were observed as trifluoroethyl and hexafluoroisopropyl methacrylate were partially substituted for the multifunctional acrylate monomer. Methyl methacrylate was used in control films due to the chemical similarities to fluorinated monomers. The incorporation of fluorinated monomers resulted in better definition of the polymer bead morphology and improvement in contrast ratio, while control films displayed less pronounced changes in optical properties. Real-time transmittance monitoring and polarized optical microscopy (POM) revealed that the monofunctional monomer addition resulted in a delay of the LC phase appearence with increasing comonomer concentration. However, a LC phase appeared earlier for fluorinated systems as compared to nonfluorinated control films of similar comonomer concentration. This was interpreted as an indication of lower LC solubility in the semifluorinated polymer matrix. [ABSTRACT FROM AUTHOR] AB - Copyright of Molecular Crystals & Liquid Crystals Science & Technology, Section A: Molecular Crystals & Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FLUORINATION KW - LIQUID crystals KW - POLYMERIZATION N1 - Accession Number: 11549348; Schulte, M.D. 1,2 Clarson, S.J. 2 Natarajan, L.V. 3 Tomlin, D.W. 4 Bunning, T.J. 1; Email Address: Timothy.Bunning@wpafb.af.mil; Affiliation: 1: Air Force Research Laboratory, Materials and Manufacturing Directorate/MLPJ, WPAFB, OH 2: Department of MS & E, University of Cincinnati, OH 3: Science Applications International Corporation, OH 4: Technical Management Concepts, Inc., OH; Source Info: 2002, Vol. 373 Issue 1, p155; Subject Term: FLUORINATION; Subject Term: LIQUID crystals; Subject Term: POLYMERIZATION; Number of Pages: 26p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11549348&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Hartson, H. Rex AU - Andre, Terence S. AU - Williges, Robert C. T1 - Criteria For Evaluating Usability Evaluation Methods. JO - International Journal of Human-Computer Interaction JF - International Journal of Human-Computer Interaction Y1 - 2001/12// VL - 13 IS - 4 M3 - Product Review SP - 373 EP - 410 PB - Taylor & Francis Ltd SN - 10447318 AB - The current variety of alternative approaches to usability evaluation methods (UEMs) designed to assess and improve usability in software systems is offset by a general lack of understanding of the capabilities and limitations of each. Practitioners need to know which methods are more effective and in what ways and for what purposes. However, UEMs cannot be evaluated and compared reliably because of the lack of standard criteria for comparison. In this article, we present a practical discussion of factors, comparison criteria, and UEM performance measures useful in studies comparing UEMs. In demonstrating the importance of developing appropriate UEM evaluation criteria, we offer operational definitions and possible measures of UEM performance. We highlight specific challenges that researchers and practitioners face in comparing UEMs and provide a point of departure for further discussion and refinement of the principles and techniques used to approach UEM evaluation and comparison. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Human-Computer Interaction is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER software -- Evaluation KW - SYSTEM analysis KW - HUMAN-computer interaction N1 - Accession Number: 6411689; Hartson, H. Rex 1 Andre, Terence S. 2 Williges, Robert C. 3; Affiliation: 1: Department of Computer Science, Virginia Tech 2: Air Force Research Laboratory 3: Department of Industrial and Systems Engineering, Virginia Tech; Source Info: 2001, Vol. 13 Issue 4, p373; Subject Term: COMPUTER software -- Evaluation; Subject Term: SYSTEM analysis; Subject Term: HUMAN-computer interaction; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 511211 Software publishers (except video game publishers); Number of Pages: 38p; Document Type: Product Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=6411689&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hoflund, Gar B. AU - Gonzalez, Rene I. AU - Phillips, Shawn H. T1 - In situ oxygen atom erosion study of a polyhedral oligomeric silsesquioxane-polyurethane copolymer. JO - Journal of Adhesion Science & Technology JF - Journal of Adhesion Science & Technology Y1 - 2001/10// VL - 15 IS - 10 M3 - Article SP - 1199 EP - 1211 PB - Taylor & Francis Ltd SN - 01694243 AB - The surface of a polyhedral oligomeric silsesquioxane-polyurethane copolymer has been characterized in situ using X-ray photoelectron spectroscopy before and after exposure to incremental fluences of oxygen atoms produced by a hyperthermal oxygen atom source. The data indicate that the atomic oxygen initially attacks the cyclopentyl groups that surround the polyhedral oligomeric silsesquioxane cage most likely resulting in the formation and desorption of CO and/or CO[sub 2] and H[sub 2]O from the surface. The carbon concentration in the near-surface region is reduced from 72.5 at.% for the as-entered surface to 37.8 at.% following 63 h of O-atom exposure at a flux of 2.0 × 10[sup 13] O atom/cm[sup 2]-s. The oxygen and silicon concentrations are increased with incremental exposures to the O-atom flux. The oxygen concentration increases from 18.5 at.% for the as-entered sample to 32.6 at.% following the 63-h exposure, and the silicon concentration increases from 8.1 to 11.1 at.% after 63 h. The data reveal the formation of a silica layer on the surface, which serves as a protective barrier preventing further degradation of the polymer underneath with increased exposure to the O-atom flux. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Adhesion Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COPOLYMERS KW - SPECTRUM analysis KW - POLYURETHANES KW - PHOTOELECTRON spectroscopy KW - Atomic oxygen KW - POLYMER KW - POSS KW - Silsesquioxane KW - SPACE KW - SPACE MATERIALS N1 - Accession Number: 5596368; Hoflund, Gar B. 1 Gonzalez, Rene I. 2 Phillips, Shawn H. 2; Affiliation: 1: Department of Chemical Engineering, University of Florida, Gainesville, FL 32611, USA 2: Propulsion Materials Applications Branch, Air Force Research Laboratory, Edwards AFB, CA 93524, USA; Source Info: Oct2001, Vol. 15 Issue 10, p1199; Subject Term: COPOLYMERS; Subject Term: SPECTRUM analysis; Subject Term: POLYURETHANES; Subject Term: PHOTOELECTRON spectroscopy; Author-Supplied Keyword: Atomic oxygen; Author-Supplied Keyword: POLYMER; Author-Supplied Keyword: POSS; Author-Supplied Keyword: Silsesquioxane; Author-Supplied Keyword: SPACE; Author-Supplied Keyword: SPACE MATERIALS; Number of Pages: 13p; Document Type: Article L3 - 10.1163/156856101317048707 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=5596368&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lanning, D. AU - Haritos, G. K. AU - Nicholas, T. AU - Maxwell, D. C. T1 - Low-cycle fatigue/high-cycle fatigue interactions in notched Ti-6Al-4V*. JO - Fatigue & Fracture of Engineering Materials & Structures JF - Fatigue & Fracture of Engineering Materials & Structures Y1 - 2001/09// VL - 24 IS - 9 M3 - Article SP - 565 EP - 577 PB - Wiley-Blackwell SN - 8756758X AB - Combined low-cycle fatigue/high-cycle fatigue (LCF/HCF) loadings were investigated for smooth and circumferentially V-notched cylindrical Ti–6Al–4V fatigue specimens. Smooth specimens were first cycled under LCF loading conditions for a fraction of the previously established fatigue life. The HCF 107 cycle fatigue limit stress after LCF cycling was established using a step loading technique. Specimens with two notch sizes, both having elastic stress concentration factors of Kt = 2.7, were cycled under LCF loading conditions at a nominal stress ratio of R = 0.1. The subsequent 106 cycle HCF fatigue limit stress at both R = 0.1 and 0.8 was determined. The combined loading LCF/HCF fatigue limit stresses for all specimens were compared to the baseline HCF fatigue limit stresses. After LCF cycling and prior to HCF cycling, the notched specimens were heat tinted, and final fracture surfaces examined for cracks formed during the initial LCF loading. Fatigue test results indicate that the LCF loading, applied for 75% of total LCF life for the smooth specimens and 25% for the notched specimens, resulted in only small reductions in the subsequent HCF fatigue limit stress. Under certain loading conditions, plasticity-induced stress redistribution at the notch root during LCF cycling appears responsible for an observed increase in HCF fatigue limit stress, in terms of net section stress. [ABSTRACT FROM AUTHOR] AB - Copyright of Fatigue & Fracture of Engineering Materials & Structures is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys -- Fatigue KW - NOTCH effect KW - high-cycle fatigue KW - low-cycle fatigue KW - notches KW - titanium alloys N1 - Accession Number: 5402636; Lanning, D. 1 Haritos, G. K. 2 Nicholas, T. 3 Maxwell, D. C. 4; Affiliation: 1: Embry-Riddle Aeronautical University, Prescott, Arizona, USA 2: Air Force Institute of Technology, Wright-Patterson AFB, Ohio, USA 3: Air Force Research Laboratory, Wright-Patterson AFB, Ohio, USA 4: University of Dayton Research Institute, Dayton, Ohio, USA; Source Info: Sep2001, Vol. 24 Issue 9, p565; Subject Term: TITANIUM alloys -- Fatigue; Subject Term: NOTCH effect; Author-Supplied Keyword: high-cycle fatigue; Author-Supplied Keyword: low-cycle fatigue; Author-Supplied Keyword: notches; Author-Supplied Keyword: titanium alloys; Number of Pages: 13p; Illustrations: 3 Black and White Photographs, 1 Diagram, 4 Charts, 9 Graphs; Document Type: Article L3 - 10.1046/j.1460-2695.2001.00411.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=5402636&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ding, K. H. AU - Tsang, L. AU - Shih, S. E. T1 - Monte Carlo simulations of particle positions for densely packed multispecies sticky particles. JO - Microwave & Optical Technology Letters JF - Microwave & Optical Technology Letters Y1 - 2001/08/05/ VL - 30 IS - 3 M3 - Article SP - 187 EP - 192 SN - 08952477 AB - The use of the Monte Carlo method to generate particle positions is important in both forward- and inverse-scattering problems of microwave and optical waves in dense media. The generated realizations of a random heterogeneous medium can be used for the numerical solutions of Maxwell's equations. In this paper, we perform Monte Carlo simulations of densely packed sticky particles that have diversity in both size and surface adhesion. The simulation algorithm allows a particle to break or form bonds with other particles during the Monte Carlo displacement. Monte Carlo simulation results are, demonstrated to be in good agreement with Percus–Yevick pair distribution functions. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 30: 187–192, 2001. [ABSTRACT FROM AUTHOR] AB - Copyright of Microwave & Optical Technology Letters is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - REMOTE sensing KW - MONTE Carlo method KW - SIMULATION methods & models KW - DISTRIBUTION (Probability theory) KW - MAXWELL equations KW - dense medium KW - Monte Carlo KW - pair distribution function KW - Percus-Yevick KW - sticky particle N1 - Accession Number: 13450160; Ding, K. H. 1 Tsang, L. 2 Shih, S. E. 3; Affiliation: 1: Sensors Directorate/SNHE Air Force Research Laboratory Hanscom AFB, Massachusetts 01731-2909 2: Department of Electrical Engineering University of Washington Seattle, Washington 98195 3: Lucent Technology Arlington, Virginia 22204; Source Info: 8/5/2001, Vol. 30 Issue 3, p187; Subject Term: REMOTE sensing; Subject Term: MONTE Carlo method; Subject Term: SIMULATION methods & models; Subject Term: DISTRIBUTION (Probability theory); Subject Term: MAXWELL equations; Author-Supplied Keyword: dense medium; Author-Supplied Keyword: Monte Carlo; Author-Supplied Keyword: pair distribution function; Author-Supplied Keyword: Percus-Yevick; Author-Supplied Keyword: sticky particle; Number of Pages: 6p; Illustrations: 1 Diagram, 4 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13450160&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nong Ye AU - Giordano, Joseph AU - Feldman, John T1 - A PROCESS CONTROL APPROACH TO CYBER ATTACK DETECTION. JO - Communications of the ACM JF - Communications of the ACM Y1 - 2001/08// VL - 44 IS - 8 M3 - Article SP - 76 EP - 82 SN - 00010782 AB - This article focuses on a process control approach to detection of cyber attack. A cyber attack is an attack on a computer and network system, consisting of computer actions such as remote or local connection, computer file access, or program execution with the intent to compromise the secure operation of the computer and network systems. When placing information assurance in the context of process control, attack prevention is analogous to system planning. Attack detection, isolation, assessment, and reaction are aspects of diagnostic control. In this article, a process control approach to system modeling for information assurance is illustrated, which leads to a Cyber Attack Control System. A model-based design of attack-detection techniques is presented to demonstrate how a process model of a computer and network system supports cyber attack detection. The process control approach to cyber attack detection is promising for several reasons. Fundamentally, it provides a conceptual framework to model a computer and network system in which both normal and attack activities occur. As the system is modeled from a process control perspective, well-established techniques in process control can be applied to overcome problems with existing techniques. KW - CYBERTERRORISM -- Prevention KW - COMPUTER crimes KW - PROCESS control KW - CONTROL theory (Mathematics) KW - COMPUTER security KW - DATA protection N1 - Accession Number: 12026082; Nong Ye 1; Email Address: nongye@asu.edu Giordano, Joseph 2; Email Address: giordanoj@rl.af.mil Feldman, John 3; Email Address: feldmanj@rl.af.mil; Affiliation: 1: Associate Professor at Arizona State University. 2: Technical Advisor at the U. S. Air Force Research Laboratory in Rome, NY. 3: Program Manager at the U. S. Air Force Research Laboratory in Rome, NY.; Source Info: Aug2001, Vol. 44 Issue 8, p76; Subject Term: CYBERTERRORISM -- Prevention; Subject Term: COMPUTER crimes; Subject Term: PROCESS control; Subject Term: CONTROL theory (Mathematics); Subject Term: COMPUTER security; Subject Term: DATA protection; NAICS/Industry Codes: 541614 Process, Physical Distribution, and Logistics Consulting Services; Number of Pages: 7p; Document Type: Article L3 - 10.1145/381641.381662 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12026082&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Al-Hussien, M. AU - Mall, S. AU - Calcaterra, J. R. T1 - Fatigue behavior of Nextel™ 312/Blackglas™ ceramic matrix composite with tensile and zero mean load. JO - Advanced Composite Materials JF - Advanced Composite Materials Y1 - 2001/07// VL - 10 IS - 1 M3 - Article SP - 1 EP - 15 PB - Taylor & Francis Ltd SN - 09243046 AB - This study characterized a woven fabric reinforced ceramic matrix composite, Nextel™ 312/Blackglas™, under monotonic and fatigue loading conditions at room and elevated (760°C) temperatures in order: (1) to investigate monotonic tensile and compressive loading behavior at room and elevated temperatures, (2) to establish the fatigue life diagrams (S - N curves) with tensile and zero mean load under low frequency (0.1 Hz) cycling condition at room and elevated temperatures, and (3) to investigate damage mechanisms and failure modes under monotonic and fatigue loading conditions. Fatigue lives under tension-compression cycling were much longer than those under tension-tension cycling at a given stress range for both room and elevated temperatures. However, fatigue lives under tension-compression cycling were much shorter than those under tension-tension cycling for a given maximum stress level at room temperature, but lives were about equal under these two loading conditions for a given maximum stress level at elevated temperatures. Further, fatigue lives were much shorter at elevated temperature than their counterparts at room temperature for a given stress range or for a given maximum stress level under the both tension-tension and tension-compression cycling conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Advanced Composite Materials is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FIBER-reinforced ceramics KW - MATERIALS -- Fatigue KW - 2D WOVEN COMPOSITE KW - Ceramic matrix composites KW - Fatigue loading KW - MONOTONIC LOADING KW - ROOM AND ELEVATED TEMPERATURES KW - TENSION-COMPRESSION CYCLING N1 - Accession Number: 5337676; Al-Hussien, M. 1 Mall, S. 2 Calcaterra, J. R. 1; Affiliation: 1: Department of Aeronautics and Astronautics, Air Force Institute of Technology, USA 2: Materials and Manufacturing Directorate, Air Force Research Laboratory, AFIT/ENY, 2950 P.St., Bldg. 640, Wright-Patterson Air Force Base, OH 45433, USA; Source Info: 2001, Vol. 10 Issue 1, p1; Subject Term: FIBER-reinforced ceramics; Subject Term: MATERIALS -- Fatigue; Author-Supplied Keyword: 2D WOVEN COMPOSITE; Author-Supplied Keyword: Ceramic matrix composites; Author-Supplied Keyword: Fatigue loading; Author-Supplied Keyword: MONOTONIC LOADING; Author-Supplied Keyword: ROOM AND ELEVATED TEMPERATURES; Author-Supplied Keyword: TENSION-COMPRESSION CYCLING; Number of Pages: 15p; Document Type: Article L3 - 10.1163/15685510152546321 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=5337676&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lykins, C. D. AU - Mall, S. AU - Jain, V. T1 - A shear stress-based parameter for fretting fatigue crack initiation. JO - Fatigue & Fracture of Engineering Materials & Structures JF - Fatigue & Fracture of Engineering Materials & Structures Y1 - 2001/07// VL - 24 IS - 7 M3 - Article SP - 461 EP - 473 PB - Wiley-Blackwell SN - 8756758X AB - The purpose of this study was to investigate the fretting fatigue crack initiation behaviour of titanium alloy, Ti–6Al–4V. Fretting contact conditions were varied by using different geometries of the fretting pad. Applied forces were also varied to obtain fretting fatigue crack initiation lives in both the low- and high-cycle fatigue regimes. Fretting fatigue specimens were examined to determine the crack location and the crack angle orientation along the contact surface. Salient features of fretting fatigue experiments were modelled and analysed with finite element analysis. Computed results of the finite element analyses were used to formulate a shear stress-based parameter to predict the fretting fatigue crack initiation life, location and orientation. Comparison of the analytical and experimental results showed that fretting fatigue crack initiation was governed by the maximum shear stress, and therefore a parameter involving the maximum shear stress range on the critical plane with the correction factor for the local mean stress or stress ratio effect was found to be effective in characterizing the fretting fatigue crack initiation behaviour in titanium alloy, Ti–6Al–4V. [ABSTRACT FROM AUTHOR] AB - Copyright of Fatigue & Fracture of Engineering Materials & Structures is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TITANIUM alloys -- Fatigue KW - GEOMETRIC modeling KW - STRAINS & stresses (Mechanics) KW - crack initiation KW - critical plane approaches KW - fretting fatigue KW - life prediction KW - titanium alloy N1 - Accession Number: 5084391; Lykins, C. D. 1 Mall, S. 2 Jain, V. 3; Affiliation: 1: Aero Propulsion and Rockets Directorate (AFRL/PRTC) 2: Materials and Manufacturing Directorate (AFRL/MLLN), Air Force Research Laboratory, Wright Patterson AFB, Ohio 3: Mechanical and Aerospace Engineering Department, University of Dayton, Dayton, Ohio, USA; Source Info: Jul2001, Vol. 24 Issue 7, p461; Subject Term: TITANIUM alloys -- Fatigue; Subject Term: GEOMETRIC modeling; Subject Term: STRAINS & stresses (Mechanics); Author-Supplied Keyword: crack initiation; Author-Supplied Keyword: critical plane approaches; Author-Supplied Keyword: fretting fatigue; Author-Supplied Keyword: life prediction; Author-Supplied Keyword: titanium alloy; Number of Pages: 13p; Illustrations: 4 Black and White Photographs, 3 Diagrams, 1 Chart, 5 Graphs; Document Type: Article L3 - 10.1046/j.1460-2695.2001.00412.x UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=5084391&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - WOOD, KRISTIN L. AU - JENSEN, DANIEL AU - BEZDEK, JOSEPH AU - OTTO, KEVIN N. T1 - Reverse Engineering and Redesign: Courses to Incrementally and Systematically Teach Design. JO - Journal of Engineering Education JF - Journal of Engineering Education Y1 - 2001/07//7/ 1/2001 VL - 90 IS - 3 M3 - Article SP - 363 EP - 374 SN - 10694730 AB - A variety of design-process and design-methods courses exist in engineering education. The primary objective of such courses is to teach engineering design fundamentals utilizing repeatable design techniques. By so doing, students obtain (1) tools they may employ during their education, (2) design experiences to understand the "big picture" of engineering, and (3) proven methods to attack open-ended problems. While these skills are worthwhile, especially as design courses are moved earlier in curricula, many students report that design methods are typically taught at a high-level and in a compartmentalized fashion. Often, the students' courses do not include opportunities to obtain incremental concrete experiences with the methods. Nor do such courses allow for suitable observation and reflection as the methods are executed. In this paper, we describe a new approach for teaching design methods that addresses these issues. This approach incorporates hands-on experiences through the use of "reverse-engineering" projects. As the fundamentals of design techniques are presented, students immediately apply the methods to actual, existing products. They are able to hold these products physically in their hands, dissect them, perform experiments on their components, and evolve them into new successful creations. Based on this reverse-engineering concept, we have developed and tested new courses at The University of Texas, MIT, and the United States Air Force Academy. In the body of this paper, we present the structure of these courses, an example of our teaching approach, and an evaluation of the results. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering Education is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DESIGN -- Study & teaching KW - CURRICULA (Courses of study) KW - ENGINEERING -- Study & teaching KW - ENGINEERING students KW - TEACHING KW - UNIVERSITY of Texas N1 - Accession Number: 48056598; WOOD, KRISTIN L. 1; Email Address: wood@mail.utexas.edu JENSEN, DANIEL 2; Email Address: dan.Jensen@usafa.af.mil BEZDEK, JOSEPH 1; Email Address: wood@mail.utexas.edu OTTO, KEVIN N. 3; Email Address: knotto@mit.edu; Affiliation: 1: Dept. of Mechanical Engineering, The University of Texas, Austin 2: Dept. of Engineering Mechanics, United States Air Force Academy 3: Dept. of Mechanical Engineering, Massachusetts Institute of Technology; Source Info: 7/ 1/2001, Vol. 90 Issue 3, p363; Subject Term: DESIGN -- Study & teaching; Subject Term: CURRICULA (Courses of study); Subject Term: ENGINEERING -- Study & teaching; Subject Term: ENGINEERING students; Subject Term: TEACHING; Company/Entity: UNIVERSITY of Texas; Number of Pages: 12p; Illustrations: 1 Color Photograph, 1 Diagram, 4 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=48056598&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Guo, Xuguang AU - Longnecker, Matthew P. AU - Michalek, Joel E. T1 - RELATION OF SERUM TETRACHLORODIBENZO-p-DIOXIN CONCENTRATION TO DIET AMONG VETERANS IN THE AIR FORCE HEALTH STUDY WITH BACKGROUND-LEVEL EXPOSURE. JO - Journal of Toxicology & Environmental Health: Part A JF - Journal of Toxicology & Environmental Health: Part A Y1 - 2001/06/08/ VL - 63 IS - 3 M3 - Article SP - 159 EP - 172 SN - 15287394 AB - To examine the contribution of various foods to exposure to 2,3,7,8-tetrachloro-p-dibenzodioxin (TCDD) in a background-exposed U.S. population, serum TCDD levels were examined in relation to diet as assessed by a standard diet assessment instrument among men with no known unusual exposure to TCDD. Our subjects were male veterans aged 42-76 yr who were in the unexposed comparison group in the Air Force Health Study, a study of the health effects of exposure to Agent Orange and herbicides in Vietnam. Food consumption was assessed by a 126-item food frequency questionnaire. Two hundred and ninety veterans who had both TCDD levels and diet assessed in 1992 were included. In general, associations between serum TCDD and consumption of foods in specific groups or nutrients, that is, meats and fats, were not evident. Among younger men, fish and chicken intake were associated with higher serum TCDD levels. The results suggest that no single food group accounts for a large proportion of variation in TCDD exposure in older U.S. men. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Toxicology & Environmental Health: Part A is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - TETRACHLORODIBENZODIOXIN KW - FOOD -- Toxicology KW - VETERANS -- United States KW - HEALTH KW - UNITED States N1 - Accession Number: 4783473; Guo, Xuguang 1 Longnecker, Matthew P. 2 Michalek, Joel E. 3; Affiliation: 1: Statistics and Public Health Research Division, Analytical Sciences, Inc., Durham, North Carolina, USA 2: Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, USA 3: Air Force Research Laboratory, Brooks Air Force Base, Texas, USA; Source Info: 2001, Vol. 63 Issue 3, p159; Subject Term: TETRACHLORODIBENZODIOXIN; Subject Term: FOOD -- Toxicology; Subject Term: VETERANS -- United States; Subject Term: HEALTH; Subject Term: UNITED States; Number of Pages: 14p; Document Type: Article L3 - 10.1080/15287390151101501 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=4783473&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Olson, Wesley A. AU - Sarter, Nadine B. AU - Olson, W A AU - Sarter, N B T1 - Management by consent in human-machine systems: when and why it breaks down. JO - Human Factors JF - Human Factors Y1 - 2001///Summer2001 VL - 43 IS - 2 M3 - journal article SP - 255 EP - 266 SN - 00187208 AB - This study examined the effects of conflict type, time pressure, and display design on operators' ability to make informed decisions about proposed machine goals and actions in a management-by-consent context. A group of 30 B757 pilots were asked to fly eight descent scenarios while responding to a series of air traffic control clearances. Each scenario presented pilots with a different conflict that arose from either incompatible goals contained in the clearance or inappropriate implementation of the clearance by automated flight deck systems. Pilots were often unable to detect these conflicts, especially under time pressure, and thus failed to disallow or intervene with proposed machine actions. Detection performance was particularly poor for conflicts related to clearance implementation. These conflicts were most likely to be missed when automated systems did more than the pilot expected of them. Performance and verbal protocol data indicate that the observed difficulties can be explained by a combination of poor system feedback and pilots' difficulties with generating expectations of future system behavior. Our results are discussed in terms of their implications for the choice and implementation of automation management strategies in general and, more specifically, with respect to risks involved in envisioned forms of digital air-ground communication in the future aviation system. Actual or potential applications of this research include the design of future data link systems and procedures, as well as the design of future automated systems in any domain that rely on operator consent as a mechanism for human-machine coordination. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DECISION making KW - SUPERVISORY control systems KW - AIR traffic controllers N1 - Accession Number: 5336801; Olson, Wesley A. Sarter, Nadine B. Olson, W A 1 Sarter, N B; Affiliation: 1: United States Air Force, Andrews Air Force Base, Maryland, USA; Source Info: Summer2001, Vol. 43 Issue 2, p255; Subject Term: DECISION making; Subject Term: SUPERVISORY control systems; Subject Term: AIR traffic controllers; NAICS/Industry Codes: 488111 Air Traffic Control; Number of Pages: 12p; Illustrations: 1 Black and White Photograph, 2 Charts, 1 Graph; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=5336801&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Ogles, Benjamin M. AU - Melendez, Gregorio AU - Davis, Diane C. AU - Lunnen, Kirk M. T1 - The Ohio Scales: Practical Outcome Assessment. JO - Journal of Child & Family Studies JF - Journal of Child & Family Studies Y1 - 2001/06// VL - 10 IS - 2 M3 - Article SP - 199 EP - 212 PB - Springer Science & Business Media B.V. SN - 10621024 AB - The development and initial psychometric studies for the Ohio Youth Problems, Functioning, and Satisfaction Scales (Ohio Scales) are described. The Ohio Scales were developed to be practical yet rigorous, multi-content, multi-source measures of outcome for children and adolescents receiving mental health services. Initial studies suggest that the Ohio Scales are promising (reliable, valid, and sensitive to change) measures that can be used to track the effectiveness of mental health interventions for youth with serious emotional disorders. Additional studies are warranted to expand the situations and populations within which the scales are valid. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Child & Family Studies is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PSYCHOMETRICS KW - SYMPTOMS KW - SATISFACTION KW - HAPPINESS KW - PSYCHOLOGY -- Methodology KW - FACTOR analysis KW - MULTIDIMENSIONAL scaling KW - assessment KW - functioning KW - outcome KW - satisfaction KW - symptoms KW - symptoms. N1 - Accession Number: 7009546; Ogles, Benjamin M. 1; Email Address: ogles@ohio.edu Melendez, Gregorio 2 Davis, Diane C. 2 Lunnen, Kirk M. 3; Affiliation: 1: Associate Professor, Department of Psychology, Ohio University, Athens, OH 2: Doctoral Candidate, Department of Psychology, Ohio University, Athens, OH 3: Captain, 92 Medical Group, United States Air Force, Fairchild, Washington, DC; Source Info: Jun2001, Vol. 10 Issue 2, p199; Subject Term: PSYCHOMETRICS; Subject Term: SYMPTOMS; Subject Term: SATISFACTION; Subject Term: HAPPINESS; Subject Term: PSYCHOLOGY -- Methodology; Subject Term: FACTOR analysis; Subject Term: MULTIDIMENSIONAL scaling; Author-Supplied Keyword: assessment; Author-Supplied Keyword: functioning; Author-Supplied Keyword: outcome; Author-Supplied Keyword: satisfaction; Author-Supplied Keyword: symptoms; Author-Supplied Keyword: symptoms.; Number of Pages: 14p; Illustrations: 4 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7009546&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Cigrang, Jeff A. AU - Staal, Mark A. T1 - Readministration of the MMPI-2 Following Defensive Invalidation in a Military Job Applicant Sample. JO - Journal of Personality Assessment JF - Journal of Personality Assessment Y1 - 2001/06// VL - 76 IS - 3 M3 - Article SP - 472 EP - 481 PB - Taylor & Francis Ltd SN - 00223891 AB - Job applicants whose response style on the Minnesota Multiphasic Personality Inventory-2 (MMPI-2; Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer) is excessively defensive create a dilemma for psychologists working in personnel selection settings. Clinical guidelines recommend the profile be considered uninterpretable, but the absence of usable testing data could lead to the elimination of otherwise qualified candidates. Readministering the MMPI-2 with altered instructions to reduce defensive responding has been suggested as an alternative. This option has lacked empirical support until recently. One study (Butcher, Morfitt, Rouse, & Holden, 1997) evaluated the effects of altered instructions on retest validity in a civilian job applicant sample, with the majority of participants obtaining valid and normal profiles on retest. The purpose of this study was to determine if these results would be replicated in a military job applicant sample. Participants were 97 military personnel who completed the MMPI-2 as part of application for selection to instructor duty. Forty-seven participants had obtained invalid profiles and retook the MMPI-2 after receiving instructions intended to reduce defensiveness. The results showed that 83% of retested participants obtained valid profiles on the second MMPI-2. The second test results were very similar in profile to those obtained from a comparison group of 50 participants whose initial MMPI-2 results were valid. The findings are discussed in terms of study limitations and future research directions. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Personality Assessment is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MINNESOTA Multiphasic Personality Inventory KW - JOB applications KW - TEXAS KW - UNITED States N1 - Accession Number: 4792597; Cigrang, Jeff A. 1 Staal, Mark A. 2; Affiliation: 1: 74th Medical Group, Wright-Patterson Air Force Base, Ohio 2: Department of Psychology, United States Air Force Academy; Source Info: Jun2001, Vol. 76 Issue 3, p472; Subject Term: MINNESOTA Multiphasic Personality Inventory; Subject Term: JOB applications; Subject Term: TEXAS; Subject Term: UNITED States; Number of Pages: 10p; Illustrations: 3 Charts; Document Type: Article; Full Text Word Count: 4068 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=4792597&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Jiang, Zhong-Ping AU - Repperger, Daniel W. T1 - New results in decentralized adaptive non-linear stabilization using output feedback. JO - International Journal of Control JF - International Journal of Control Y1 - 2001/05/10/ VL - 74 IS - 7 M3 - Article SP - 659 EP - 673 SN - 00207179 AB - This paper proposes new results in decentralized adaptive stabilization for a class of large-scale non-linear systems with output measurements. Like previous work, the parametric uncertainty does not satisfy any matching conditions and the uncertain interconnections may be highly non-linear. Unlike most previous results in the literature of decentralized control, the development of our systematic approach does not rely on the crucial assumption that the (unmeasured) zero-dynamics of each individual local system are linear and enter the system additively and linearly. Simulation results based on a practical example of two inverted pendulums on carts demonstrate the effectiveness of the proposed decentralized adaptive stabilization methodology. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Control is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADAPTIVE control systems KW - NONLINEAR control theory KW - OBSERVABILITY (Control theory) N1 - Accession Number: 4439488; Jiang, Zhong-Ping 1 Repperger, Daniel W. 2; Affiliation: 1: Department of Electrical and Computer Engineering, Polytechnic University, Six Metrotech Center, Brooklyn, NY 11201, USA 2: Building 33 AFRL/HECP, Air Force Research Laboratory, Wright-Pat erson Air Force Base, Dayton, OH 45433-7022, USA; Source Info: 05/10/2001, Vol. 74 Issue 7, p659; Subject Term: ADAPTIVE control systems; Subject Term: NONLINEAR control theory; Subject Term: OBSERVABILITY (Control theory); Number of Pages: 15p; Document Type: Article L3 - 10.1080/00207170010025258 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=4439488&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Baum, Carl E. AU - Stone, Alexander P. T1 - Unipolarized Generalized Inhomogeneous TEM Plane Waves in Differential Geometric Lens Synthesis. JO - Electromagnetics JF - Electromagnetics Y1 - 2001/05// VL - 21 IS - 4 M3 - Article SP - 275 EP - 294 PB - Taylor & Francis Ltd SN - 02726343 AB - Previous results have shown that one can have a generalized Transverse Electromagnetic (TEM) plane wave propagating in the u[sub 3] direction in u[sub 1], u[sub 2], u[sub 3] orthogonal curvilinary coordinates. The formal fields are functions of u[sub 1] and u[sub 2] only and have components in both these directions. The medium is inhomogeneous but isotropic, with formal propagation speed (with respect to the u[sub 3] coordinate) a function of only u[sub 3]. In this case the u[sub 3] surfaces can only be planes or spheres. The case of constant φ surfaces for u[sub 3] gave a class of TEM waves propagating in the φ direction in the usual (Ψ, φ, z) cylindrical coordinate system, thereby giving a bending lens to change the direction of propagation of a TEM wave guided by appropriate conductors. In the present paper the formal fields are assumed to have only one component (electric in the u[sub 1] direction, magnetic in the u[sub 2] direction). This removes the aforementioned restriction on the u[sub 3] coordinate surfaces. The formal constitutive parameters μ[sup 1] and ε[sup 1] are inhomogeneous but isotropic, and the real μ is constrained to be μ[sub 0] as before. Specializing the dielectric lens to a body of revolution with the magnetic field in the φ (i.e., u[sub 2]) direction, several examples of such lenses are developed. Two of these examples correspond to well-known circular coaxial and circular conical transmission lines with uniform media. Another two of these examples are nontraditional, involving line sources or foci. [ABSTRACT FROM AUTHOR] AB - Copyright of Electromagnetics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ELECTROMAGNETIC lenses KW - GEOMETRICAL optics KW - POLARIZATION of electromagnetic waves KW - MAXWELL equations KW - DIFFERENTIAL geometry KW - Differential geometry KW - TEM PLANE WAVE N1 - Accession Number: 4437900; Baum, Carl E. 1 Stone, Alexander P. 2; Affiliation: 1: Air Force Research Laboratory Directed Energy Directorate 2: Department of Mathematics & Statistics University of New Mexico Albuquerque, New Mexico, USA; Source Info: May2001, Vol. 21 Issue 4, p275; Subject Term: ELECTROMAGNETIC lenses; Subject Term: GEOMETRICAL optics; Subject Term: POLARIZATION of electromagnetic waves; Subject Term: MAXWELL equations; Subject Term: DIFFERENTIAL geometry; Author-Supplied Keyword: Differential geometry; Author-Supplied Keyword: TEM PLANE WAVE; Number of Pages: 20p; Illustrations: 1 Diagram; Document Type: Article L3 - 10.1080/027263401750158135 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=4437900&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Alexander, William K. AU - Briggs, G. Bruce AU - Still, Kenneth R. AU - Jederberg, Warren W. AU - MacMahon, K. AU - Baker, W. H. AU - MacKerer, C. T1 - Toxicity of 2,6-Di-tert-butyl-4-Nitrophenol (DBNP). JO - Applied Occupational & Environmental Hygiene JF - Applied Occupational & Environmental Hygiene Y1 - 2001/04// VL - 16 IS - 4 M3 - Article SP - 487 EP - 495 SN - 1047322X AB - U.S. Navy submarines reported a yellowing of metal surfaces on their internal surfaces. The yellowing was initially identified on the painted steel bulkheads but further examination indicated that it was not limited to steel surfaces and included bedding, thread tape, Formica, plastisol covered hand-wheels, and aluminum lockers. Crew members also reported to the medical department that their skin turned yellow when they came in contact with these contaminated surfaces and requested information on the effects of exposure. Studies conducted by General Dynamics' Electric Boat Division (EBD) determined that the agent was 2,6-Di-tertbutyl-4-Nitrophenol (DBNP). 2,6-Di-butylphenol (DBP) is an antioxidant additive used in lubricating oils and hydraulic fluids. In the enclosed atmosphere of a submarine, the oil mist could be spread throughout the boat by venting the lube oil to the atmosphere. Submarines use electrostatic precipitators (ESP) to clean the air of particulate materials. During passage through the ESP, oil mist containing DBP is nitrated to DBNP,which is then moved throughout the boat in the ventilation system. Analysis of the EBD data indicated 24-hour exposure concentrations to be in the range of < 3.0 to 122 ppb in the laboratory and submarine settings. Submarine crews may be exposed to these concentrations for as many as 24 hours/day for 90 days during underway periods. Toxicity studies regarding the oral and dermal uptake of DBNP were conducted. From the literature the lethal dose to 50 percent of the population (LD[sub 50]) of DBNP (rat) was reported by Vesselinovitch et al. in 1961 to be 500 mg/kg. Our studies indicated that the LD[sub 50] is in the range of 80 mg/kg in the rat. Our work also includes dermal absorption studies, which indicated that DBNP is not well absorbed through intact skin. Within this study, no no-observable adverse effect level (NOAEL) or lowest observable adverse effect level (LOAEL) was identified. Calculation of a reference dose was completed using standard methods based on the LD[sub 50] as a numerator with several uncertainty and modifying factors. EBD's determination of airborne concentrations aboard submarines fall in the range of these anticipated allowable concentrations and could indicate significant chronic exposures. No adverse effects from DBNP exposures have been reported to date. [ABSTRACT FROM AUTHOR] AB - Copyright of Applied Occupational & Environmental Hygiene is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NITROPHENOLS KW - SUBMARINES (Ships) KW - TOXICITY testing KW - UNITED States KW - DBNP KW - Submarine KW - TOXICITY N1 - Accession Number: 4343224; Alexander, William K. 1 Briggs, G. Bruce 2 Still, Kenneth R. 1 Jederberg, Warren W. 3 MacMahon, K. 4 Baker, W. H. 4 MacKerer, C. 5; Affiliation: 1: Naval Health Research Center Toxicology Detachment (NHRC/TD), Wright-Patterson Air Force Base, Ohio 2: Geo-Centers, Inc., Wright-Patterson Air Force Base, Ohio 3: Commander Submarine Force, Pacific, Pearl Harbor, Hawaii 4: Air Force Research Laboratory, Human Effectiveness Directorate (AFRL/HEST), Wright-Patterson Air Force Base, Ohio 5: Mobil Business Resources Corp., Paulsboro, New Jersey; Source Info: Apr2001, Vol. 16 Issue 4, p487; Subject Term: NITROPHENOLS; Subject Term: SUBMARINES (Ships); Subject Term: TOXICITY testing; Subject Term: UNITED States; Author-Supplied Keyword: DBNP; Author-Supplied Keyword: Submarine; Author-Supplied Keyword: TOXICITY; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325194 Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing; NAICS/Industry Codes: 336611 Ship Building and Repairing; Number of Pages: 9p; Document Type: Article L3 - 10.1080/104732201300064449 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=4343224&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haas, Michael W. AU - Hettinger, Lawrence J. T1 - Current Research in Adaptive Interfaces. JO - International Journal of Aviation Psychology JF - International Journal of Aviation Psychology Y1 - 2001/04// VL - 11 IS - 2 M3 - Article SP - 119 EP - 121 PB - Taylor & Francis Ltd SN - 10508414 AB - Focuses on the research on the use of adaptive computer interfaces in aviation. Description of an adaptive interface; Advantages of using adaptive computer interfaces over a non-adaptive interface; Discussion on an adaptive methodology using estimated human and air combat states. KW - AERONAUTICS KW - COMPUTER interfaces N1 - Accession Number: 4792839; Haas, Michael W. 1 Hettinger, Lawrence J. 2; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 2: Logicon Technical Services, Inc., Dayton, OH; Source Info: 2001, Vol. 11 Issue 2, p119; Subject Term: AERONAUTICS; Subject Term: COMPUTER interfaces; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; Number of Pages: 3p; Document Type: Article; Full Text Word Count: 1133 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=4792839&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bennett, Kevin B. AU - Cress, Jeffrey D. AU - Hettinger, Lawrence J. AU - Stautberg, Dean AU - Haas, Michael W. T1 - A Theoretical Analysis and Preliminary Investigation of Dynamically Adaptive Interfaces. JO - International Journal of Aviation Psychology JF - International Journal of Aviation Psychology Y1 - 2001/04// VL - 11 IS - 2 M3 - Article SP - 169 EP - 195 PB - Taylor & Francis Ltd SN - 10508414 AB - A dynamically adaptive interface (DAI) is a computer interface that changes the display or control characteristics of a system (or both) in real time. The goal of DAIs is to anticipate informational needs or desires of the user and provide that information without the requirement of an explicit control input by the user. DAIs have the potential to improve overall human-machine system performance if properly designed; they also have a very real potential to degrade performance if they are not properly designed. This article explores both theoretical and practical issues in the design of DAIs. The relation of the DAI concept to decision aiding and automation is discussed, and a theoretical framework for design is outlined. A preliminary investigation of the DAI design concept was conducted in the domain of aviation (precision, low-level navigation). Nontraditional controls (a force reflecting stick) and displays (a configural flight director) were developed to support performance at the task. A standard interface (conventional controls and displays), a candidate interface (alternative controls and displays), and an adaptive interface (dynamically alternating between the standard and candidate displays) were evaluated. The results indicate that significant performance advantages in the quality of route navigation were obtained with the candidate and adaptive interfaces relative to the standard interface; no significant differences between the candidate and adaptive interfaces were obtained. The implications of these results are discussed, with special emphasis on their relation to fundamental challenges that must be met for the DAI concept to be a viable design alternative. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aviation Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - COMPUTER interfaces KW - HUMAN-machine systems N1 - Accession Number: 4792836; Bennett, Kevin B. 1 Cress, Jeffrey D. 2 Hettinger, Lawrence J. 2 Stautberg, Dean 2 Haas, Michael W. 3; Affiliation: 1: Department of Psychology, Wright State University 2: Logicon Technical Services, Inc., Dayton, OH 3: Human Effectiveness Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH; Source Info: 2001, Vol. 11 Issue 2, p169; Subject Term: COMPUTER interfaces; Subject Term: HUMAN-machine systems; Number of Pages: 27p; Illustrations: 1 Black and White Photograph, 2 Diagrams, 6 Graphs; Document Type: Article; Full Text Word Count: 9799 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=4792836&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Haas, Michael W. AU - Nelson, W. Todd AU - Repperger, Daniel AU - Bolia, Robert AU - Zacharias, Greg T1 - Applying Adaptive Control and Display Characteristics to Future Air Force Crew Stations. JO - International Journal of Aviation Psychology JF - International Journal of Aviation Psychology Y1 - 2001/04// VL - 11 IS - 2 M3 - Article SP - 223 EP - 235 PB - Taylor & Francis Ltd SN - 10508414 AB - The Human Effectiveness Directorate of the Air Force Research Laboratory is developing and evaluating human-machine interface concepts to enhance overall weapon system performance by embedding knowledge of the operator's state inside the interface, enabling the interface to make informed, automated decisions regarding many of the interface's information management display characteristics. Some of these characteristics include information modality, spatial arrangement, and temporal organization. By increasing the ability of the interface to respond, or adapt, to the changing requirements of the human operator in real time-in essence closing the loop-the interface provides intuitive information management to the operator and provides real-time human engineering. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aviation Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ADAPTIVE control systems KW - AIR forces KW - HUMAN-machine systems N1 - Accession Number: 4792834; Haas, Michael W. 1 Nelson, W. Todd 2 Repperger, Daniel 3 Bolia, Robert 4 Zacharias, Greg 5; Affiliation: 1: U.S. Air Force Research Laboratory , Wright-Patterson Air Force Base, OH 2: Divine/Whittman-Hart, Cincinnati, OH 3: U. S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 4: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 5: Charles River Analytics, Cambridge, MA; Source Info: 2001, Vol. 11 Issue 2, p223; Subject Term: ADAPTIVE control systems; Subject Term: AIR forces; Subject Term: HUMAN-machine systems; Number of Pages: 13p; Illustrations: 1 Diagram, 1 Graph; Document Type: Article; Full Text Word Count: 4411 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=4792834&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Colette, Damon T1 - Economic Strategy and National Security: A Next Generation Approach. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 2001///Spring2001 VL - 27 IS - 3 M3 - Book Review SP - 494 EP - 497 PB - Sage Publications Inc. SN - 0095327X AB - The article reviews the book "Economic Strategy and National Security: A Next Generation Approach," by Patrick J. deSouza. KW - NATIONAL security KW - NONFICTION KW - DESOUZA, Patrick J. KW - ECONOMIC Strategy & National Security: A Next Generation Approach (Book) N1 - Accession Number: 5169397; Colette, Damon 1; Affiliation: 1: United States Air Force Academy; Source Info: Spring2001, Vol. 27 Issue 3, p494; Subject Term: NATIONAL security; Subject Term: NONFICTION; Reviews & Products: ECONOMIC Strategy & National Security: A Next Generation Approach (Book); NAICS/Industry Codes: 928110 National Security; People: DESOUZA, Patrick J.; Number of Pages: 4p; Document Type: Book Review; Full Text Word Count: 1440 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=5169397&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Meredith, James H. T1 - Hemingway vs. Fitzgerald: The Rise and Fall of a Literary Friendship. JO - Hemingway Review JF - Hemingway Review Y1 - 2001///Spring2001 VL - 20 IS - 2 M3 - Book Review SP - 107 EP - 109 SN - 02763362 AB - Reviews the book "Hemingway vs. Fitzgerald: The Rise and Fall of a Literary Friendship," by Scott Donaldson. KW - FRIENDSHIP KW - NONFICTION KW - DONALDSON, Scott KW - HEMINGWAY vs. Fitzgerald: The Rise & Fall of a Literary Friendship (Book) N1 - Accession Number: 5053840; Meredith, James H. 1; Affiliation: 1: United States Air Force Academy; Source Info: Spring2001, Vol. 20 Issue 2, p107; Subject Term: FRIENDSHIP; Subject Term: NONFICTION; Reviews & Products: HEMINGWAY vs. Fitzgerald: The Rise & Fall of a Literary Friendship (Book); People: DONALDSON, Scott; Number of Pages: 3p; Document Type: Book Review; Full Text Word Count: 1051 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=5053840&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bolia, Robert S. AU - D'Angelo, William R. AU - Mishler, Pamela J. AU - Morris, Linda J. AU - Bolia, R S AU - D'Angelo, W R AU - Mishler, P J AU - Morris, L J T1 - Effects of hearing protectors on auditory localization in azimuth and elevation. JO - Human Factors JF - Human Factors Y1 - 2001///Spring2001 VL - 43 IS - 1 M3 - journal article SP - 122 EP - 128 SN - 00187208 AB - An experiment was conducted to determine the effects of two types of hearing protectors on auditory localization performance. Six listeners localized a 750-ms broadband noise from loudspeakers ranging in azimuth from -180 degrees to +180 degrees and in elevation from -75 degrees to +90 degrees. Independent variables included the type of hearing protector and the elevation of the source. Dependent measures included azimuth error, elevation error, and the percentage of trials resulting in a front-back confusion. Performance on each of the dependent measures was found to be mediated by one or more of the independent variables. Actual or potential applications include the generation of improved design guidelines for hearing protectors and workplace alarms. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DEAFNESS -- Prevention KW - EQUIPMENT & supplies KW - DIRECTIONAL hearing KW - HEARING KW - ATTENTION KW - COMPARATIVE studies KW - RESEARCH -- Methodology KW - MEDICAL cooperation KW - PSYCHOACOUSTICS KW - RESEARCH KW - EVALUATION -- Research KW - ACOUSTIC localization KW - HEARING protection N1 - Accession Number: 4919421; Bolia, Robert S. D'Angelo, William R. Mishler, Pamela J. Morris, Linda J. Bolia, R S 1 D'Angelo, W R Mishler, P J Morris, L J; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7022, USA; Source Info: Spring2001, Vol. 43 Issue 1, p122; Subject Term: DEAFNESS -- Prevention; Subject Term: EQUIPMENT & supplies; Subject Term: DIRECTIONAL hearing; Subject Term: HEARING; Subject Term: ATTENTION; Subject Term: COMPARATIVE studies; Subject Term: RESEARCH -- Methodology; Subject Term: MEDICAL cooperation; Subject Term: PSYCHOACOUSTICS; Subject Term: RESEARCH; Subject Term: EVALUATION -- Research; Subject Term: ACOUSTIC localization; Subject Term: HEARING protection; Number of Pages: 7p; Illustrations: 1 Black and White Photograph, 4 Graphs; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=4919421&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Draper, Mark H. AU - Viirre, Erik S. AU - Furness, Thomas A. AU - Gawron, Valerie J. AU - Draper, M H AU - Viire, E S AU - Furness, T A AU - Gawron, V J T1 - Effects of image scale and system time delay on simulator sickness within head-coupled virtual environments. JO - Human Factors JF - Human Factors Y1 - 2001///Spring2001 VL - 43 IS - 1 M3 - journal article SP - 129 EP - 146 SN - 00187208 AB - Novel patterns of visual-vestibular intersensory stimulation often result in symptoms of simulator sickness, raising health and safety concerns regarding virtual environment exposure. Two experiments investigated the effect of conflicting visual-vestibular cues on subjective reports of simulator sickness during and after a 50-min exposure to a head-coupled virtual interface. Virtual image scale factors (0.5. 1.0, 2.0 magnification, generated by varying geometric field of view angle) were investigated in Experiment 1, and additional system time delays (125, 250 ms) were investigated in Experiment 2. Simulator sickness metrics included spoken self-reports during exposure and simulator sickness questionnaires (pre-exposure, immediate postexposure, and 20 min postexposure). Head yaw angular position data were also recorded. Reports of simulator sickness symptoms were significantly greater in the minification (0.5) and magnification (2.0) image scale factor conditions than in the neutral condition (1.0). Simulator sickness did not vary with changes in time delay, however. Furthermore, a comparison across experiments suggests no appreciable increase in simulator sickness with increasing time delays above the nominal value (48 ms). Head angular position data exhibited certain systematic variations across conditions. Actual or potential applications of this research include virtual environment training, simulation, and entertainment systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MOTION sickness KW - IMAGING systems N1 - Accession Number: 4919423; Draper, Mark H. Viirre, Erik S. Furness, Thomas A. Gawron, Valerie J. Draper, M H 1 Viire, E S Furness, T A Gawron, V J; Affiliation: 1: US Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA; Source Info: Spring2001, Vol. 43 Issue 1, p129; Subject Term: MOTION sickness; Subject Term: IMAGING systems; NAICS/Industry Codes: 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing; NAICS/Industry Codes: 333316 Photographic and Photocopying Equipment Manufacturing; Number of Pages: 18p; Illustrations: 2 Diagrams, 3 Charts, 11 Graphs; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=4919423&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Muschinski, Andreas AU - Frehich, Ror AU - Jensen, Mike AU - Hugo, Ron AU - Hoff, Axel AU - Eaton, Frank AU - Balsley, Ben T1 - Fine-Scale Measurements Of Turbulence In The Lower Troposphere: An Intercomparison Between A Kite- And Balloon-Borne, And A Helicopter-Borne Measurement System. JO - Boundary-Layer Meteorology JF - Boundary-Layer Meteorology Y1 - 2001/02// VL - 98 IS - 2 M3 - Article SP - 219 EP - 250 PB - Springer Science & Business Media B.V. SN - 00068314 AB - Two state-of-the-art, high-resolution, in situ turbulence measurement systems, which can be deployed at altitudes well above the atmospheric surface layer, are compared: the Tethered Lifting System (TLS) of the Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado, Boulder, Colorado, and the helicopter-borne turbulence measurement system HELIPOD of the Technical University Braunschweig, Germany, and the University of Hanover, Germany. While the CIRES TLS is a fixed-point platform, HELIPOD is a moving platform. On the basis of data taken with the two systems in separate field campaigns, the system capabilities are quantified and discussed. Criteria for instrumental requirements are presented. It is shown that both the CIRES TLS and HELIPOD are well suited for measuring fine-scale turbulence that is characterized by very small temperature structure parameters 106 K2 m-2/3 and smaller) and very small energy dissipation rates (10-7 m2 s-3 and smaller). The authors are not aware of any other turbulence measurement systems that have similar capabilities and can be deployed at altitudes of up to several kilometres. The HELIPOD is ideal for high-resolution horizontal measurements while the TLS is ideal for high-resolution vertical measurements using multiple sensors attached to a suspended line. [ABSTRACT FROM AUTHOR] AB - Copyright of Boundary-Layer Meteorology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ATMOSPHERIC turbulence KW - TURBULENCE KW - METEOROLOGY KW - METEOROLOGICAL instruments KW - ENVIRONMENTAL sciences KW - ENERGY dissipation KW - Airborne turbulence measurements KW - Energy dissipation rate KW - Fine-wire anemometry KW - Fine-wire thermometry KW - HELIPOD KW - Structure parameters KW - Tethered Lifting System N1 - Accession Number: 15606461; Muschinski, Andreas 1 Frehich, Ror 2 Jensen, Mike 2 Hugo, Ron 3 Hoff, Axel 4 Eaton, Frank 3 Balsley, Ben 2; Affiliation: 1: Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, and NOAA Environmental Technology Laboratory, 325 Broadway, Boulder, Colorado 80305-3328, U.S.A. 2: Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, Colorado 80309, U.S.A. 3: U. S. Air Force Research Laboratory/DEBA, 3550 Aberdeen St., Kirtland Air Force Base, New Mexico 87117-5776, U.S.A. 4: Aerodata Flugmeßtechnik GmbH, Hermann-Blenk-Straße 36, D-38108 Braunschweig, Germany; Source Info: Feb2001, Vol. 98 Issue 2, p219; Subject Term: ATMOSPHERIC turbulence; Subject Term: TURBULENCE; Subject Term: METEOROLOGY; Subject Term: METEOROLOGICAL instruments; Subject Term: ENVIRONMENTAL sciences; Subject Term: ENERGY dissipation; Author-Supplied Keyword: Airborne turbulence measurements; Author-Supplied Keyword: Energy dissipation rate; Author-Supplied Keyword: Fine-wire anemometry; Author-Supplied Keyword: Fine-wire thermometry; Author-Supplied Keyword: HELIPOD; Author-Supplied Keyword: Structure parameters; Author-Supplied Keyword: Tethered Lifting System; NAICS/Industry Codes: 811219 Other Electronic and Precision Equipment Repair and Maintenance; NAICS/Industry Codes: 334519 Other Measuring and Controlling Device Manufacturing; Number of Pages: 32p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15606461&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Revak, Marie A. AU - Porter, David B. T1 - The Toothless Bathing Beauty and the t-test. JO - Teaching Statistics JF - Teaching Statistics Y1 - 2001/02// VL - 23 IS - 1 M3 - Article SP - 22 PB - Wiley-Blackwell SN - 0141982X AB - A simple and amusing class experiment is used to introduce many ideas of descriptive and inferential statistics. [ABSTRACT FROM AUTHOR] AB - Copyright of Teaching Statistics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STATISTICS KW - INFERENCE (Logic) KW - SCIENTIFIC experimentation N1 - Accession Number: 10454328; Revak, Marie A. 1; Email Address: marie.revak@usafa.af.mil Porter, David B. 1; Affiliation: 1: United States Air Force Academy; Source Info: Feb2001, Vol. 23 Issue 1, p22; Subject Term: STATISTICS; Subject Term: INFERENCE (Logic); Subject Term: SCIENTIFIC experimentation; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=10454328&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Morgan, II, Chester H. T1 - All the Laws But One--Civil Liberties in Wartime. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 2001///Winter2001 VL - 27 IS - 2 M3 - Book Review SP - 303 EP - 306 PB - Sage Publications Inc. SN - 0095327X AB - The article reviews the book "All the Laws But One--Civil Liberties in Wartime," by William Rehnquist. KW - CIVIL rights KW - NONFICTION KW - REHNQUIST, William H., 1924-2005 KW - ALL the Laws But One: Civil Liberties in Wartime (Book) N1 - Accession Number: 4345688; Morgan, II, Chester H. 1; Affiliation: 1: United States Air Force Academy; Source Info: Winter2001, Vol. 27 Issue 2, p303; Subject Term: CIVIL rights; Subject Term: NONFICTION; Reviews & Products: ALL the Laws But One: Civil Liberties in Wartime (Book); People: REHNQUIST, William H., 1924-2005; Number of Pages: 4p; Document Type: Book Review; Full Text Word Count: 1349 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=4345688&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hendrix, William H. T1 - Perceptions of Sexual Harassment by Student-Employee Classification, Marital Status, and Female Racial Classification. JO - Journal of Social Behavior & Personality JF - Journal of Social Behavior & Personality Y1 - 2000/12// VL - 15 IS - 4 M3 - Article SP - 529 EP - 544 PB - Select Press SN - 08861641 AB - Perceptual differences in views of sexual harassment were investigated as a function of student/employee classification (United States Air Force Academy cadets, undergraduate university students, and full-time business employees), gender of the initiator, gender of the respondent, marital status of respondent, age, position power, success status, and attractiveness of the initiator. In addition, differences in sexual harassment perceptions and extent of sexual harassment experienced for Black, Hispanic, and White women were investigated. Participants were 764 individuals classified as either Air Force Academy cadets (n = 145), full-time undergraduate university students (n = 216) or full-time business employees (n = 403). Of these, approximately 58% were males and 42% females. Results indicated that behaviors were perceived as more sexually harassing if the individual was a male, older, low in success status, high in position power, and unattractive. Married and divorced individuals perceived events as more sexually harassing than did single individuals. Females perceived both male and female initiators as sexually harassing. Males, on the other hand, perceived other male initiators as sexually harassing but female initiators as less sexually harassing for the same behaviors. There were no significant differences in the perceptions of sexual harassment or in reports of sexual harassment between Black, Hispanic, and White women. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Social Behavior & Personality is the property of Select Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SEXUAL harassment KW - WOMEN -- Crimes against KW - SOCIAL perception KW - PERCEPTION KW - STUDENTS KW - EMPLOYEES KW - COLLEGE students KW - MARRIED women N1 - Accession Number: 7054691; Hendrix, William H. 1; Email Address: william.hendrix@usafa.af.mil; Affiliation: 1: United States Air Force Academy; Source Info: Dec2000, Vol. 15 Issue 4, p529; Subject Term: SEXUAL harassment; Subject Term: WOMEN -- Crimes against; Subject Term: SOCIAL perception; Subject Term: PERCEPTION; Subject Term: STUDENTS; Subject Term: EMPLOYEES; Subject Term: COLLEGE students; Subject Term: MARRIED women; Number of Pages: 16p; Illustrations: 3 Charts, 2 Graphs; Document Type: Article; Full Text Word Count: 5866 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7054691&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hedge, Jerry W. AU - Bruskiewicz, Kenneth T. AU - Borman, Walter C. AU - Hanson, Mary Ann AU - Logan, Kristi K. AU - Siem, Frederick M. T1 - Selecting Pilots With Crew Resource Management Skills. JO - International Journal of Aviation Psychology JF - International Journal of Aviation Psychology Y1 - 2000/10// VL - 10 IS - 4 M3 - Article SP - 377 EP - 392 PB - Taylor & Francis Ltd SN - 10508414 AB - For years, pilot selection has focused primarily on the identification of individuals with superior flying skills and abilities. More recently, the aviation community has become increasingly aware that successful completion of a flight or mission requires not only flying skills but the ability to work well in a crew situation. This project involved development and validation of a crew resource management (CRM) skills test for Air Force transport pilots. A significant relation was found between the CRM skills test and behavior-based ratings of aircraft commander CRM performance, and the implications of these findings for CRM-based selection and training are discussed. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aviation Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AIRMEN KW - FLIGHT training KW - UNITED States. Air Force KW - TRAINING of KW - UNITED States N1 - Accession Number: 4741419; Hedge, Jerry W. 1 Bruskiewicz, Kenneth T. 1 Borman, Walter C. 1 Hanson, Mary Ann 1 Logan, Kristi K. 1 Siem, Frederick M. 2; Affiliation: 1: Personnel Decisions Research Institutes, Inc., Minneapolis 2: Air Force Research Laboratory, Brooks Air Force Base, TX; Source Info: 2000, Vol. 10 Issue 4, p377; Subject Term: AIRMEN; Subject Term: FLIGHT training; Subject Term: UNITED States. Air Force; Subject Term: TRAINING of; Subject Term: UNITED States; NAICS/Industry Codes: 611512 Flight Training; Number of Pages: 16p; Illustrations: 3 Charts; Document Type: Article; Full Text Word Count: 6320 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=4741419&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Schmidt, Norman B. AU - Lerew, Darin R. AU - Santiago, Helen AU - Trakowski, John H. AU - Staab, Jeffrey P. T1 - Effects of heart-rate feedback on estimated cardiovascular fitness in patients with panic disorderThe opinions or assertions contained herein are the private ones of the authors and are not to be construed as official or reflecting the views of the Department of Defense, the United States Air Force, or the Uniformed Services University of the Health Sciences. JO - Depression & Anxiety (1091-4269) JF - Depression & Anxiety (1091-4269) Y1 - 2000/09// VL - 12 IS - 2 M3 - Article SP - 59 EP - 66 PB - John Wiley & Sons, Inc. SN - 10914269 AB - Psychological parameters that are believed to affect estimations of cardiovascular fitness were examined in patients with panic disorder and nonclinical controls. Fifty-four participants [panic disorder patients (n = 27) and age- and sex-matched nonclinical controls (n = 27)] completed a cycle ergometer test and were compared on the basis of estimated VO[sub 2 max] . Participants were randomly assigned to experimental conditions in which they received heart-rate feedback or no feedback during the test. Patients with panic disorder exhibited lower VO[sub 2 max] and decreased exercise tolerance (i.e., were more likely to discontinue the test) than nonclinical controls. Furthermore, individuals with high anxiety sensitivity (i.e., a fear of autonomic arousal), but not a panic disorder diagnosis per se, achieved significantly lower VO[sub 2 max] when provided with heart-rate feedback. Moreover, diagnostic status interacted with levels of anxiety sensitivity to predict VO[sub 2 max] . Patients with panic disorder display poorer cardiovascular fitness after controlling for anxiety and other factors that underestimate performance during fitness testing. Depression and Anxiety 12:59–66, 2000. © 2000 Wiley-Liss, Inc. [ABSTRACT FROM AUTHOR] AB - Copyright of Depression & Anxiety (1091-4269) is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CARDIOVASCULAR fitness KW - PHYSICAL fitness KW - PANIC disorders KW - EXERCISE KW - ANXIETY KW - anxiety KW - cardiovascular KW - exercise KW - panic disorder KW - physical fitness N1 - Accession Number: 11772958; Schmidt, Norman B. 1; Email Address: schmidt.283@osu.edu Lerew, Darin R. 2 Santiago, Helen 3 Trakowski, John H. 4 Staab, Jeffrey P. 5; Affiliation: 1: Department of Psychology, The Ohio State University, Columbus, Ohio 2: Department of Leadership and Behavioral Science, The United States Air Force Academy, Colorado Springs, Colorado 3: Department of Medical and Clinical Psychology, Uniformed Services University of the Health Sciences, Bethesda, Maryland 4: Department of Psychology, Walter Reed Army Medical Center, Silver Spring, Maryland 5: Department of Psychiatry, University of Florida, Gainsville, Florida; Source Info: 2000, Vol. 12 Issue 2, p59; Subject Term: CARDIOVASCULAR fitness; Subject Term: PHYSICAL fitness; Subject Term: PANIC disorders; Subject Term: EXERCISE; Subject Term: ANXIETY; Author-Supplied Keyword: anxiety; Author-Supplied Keyword: cardiovascular; Author-Supplied Keyword: exercise; Author-Supplied Keyword: panic disorder; Author-Supplied Keyword: physical fitness; NAICS/Industry Codes: 713940 Fitness and Recreational Sports Centers; Number of Pages: 8p; Illustrations: 2 Charts, 1 Graph; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11772958&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Colle, Herbert A. AU - Reid, Gary B. T1 - The Room Effect: Exploring Paths and Rooms in a Desktop Virtual Environment With Objects Grouped Categorically and Spatially. JO - Ecological Psychology JF - Ecological Psychology Y1 - 2000/09// VL - 12 IS - 3 M3 - Article SP - 207 EP - 229 PB - Taylor & Francis Ltd SN - 10407413 AB - People rapidly learn the spatial layout of the interior of rooms when they navigate through a building to perform everyday tasks in a simulated environment, a phenomenon called the room effect. Three experiments showed that the room effect did not depend on the categorical or functional utilization of rooms or on the exploration routes taken. Although there was a strong effect of whether or not the objects in the rooms all came from the same category or not, this object organization effect was independent of the room effect. Second, the room effect was just as strong when objects in different rooms were visited successively as it was when all objects in a room were visited before moving to the next room. The results are difficult to explain from the landmark-route-survey model or other extant explanations. A characteristic enclosure framework explanation is proposed. [ABSTRACT FROM AUTHOR] AB - Copyright of Ecological Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VIRTUAL reality KW - ROOMS KW - OHIO KW - UNITED States N1 - Accession Number: 3376964; Colle, Herbert A. 1 Reid, Gary B. 2; Affiliation: 1: Department of Psychology, Wright State University 2: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio; Source Info: 2000, Vol. 12 Issue 3, p207; Subject Term: VIRTUAL reality; Subject Term: ROOMS; Subject Term: OHIO; Subject Term: UNITED States; Number of Pages: 23p; Illustrations: 3 Charts, 1 Graph; Document Type: Article; Full Text Word Count: 10800 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=3376964&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Adabi, Jacob T1 - Middle East and North Africa: Governance, Democratization, Human Rights. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 2000///Fall2000 VL - 17 IS - 2 M3 - Book Review SP - 290 EP - 292 SN - 87553449 AB - The article reviews the book "Middle East and North Africa: Governance, Democratization, Human Rights," by Paul J. Magnarella. KW - HUMAN rights KW - NONFICTION KW - MAGNARELLA, Paul J. KW - MIDDLE East & North Africa: Governance, Democratization, Human Rights (Book) N1 - Accession Number: 3797490; Adabi, Jacob 1; Affiliation: 1: United States Air Force Academy; Source Info: Fall2000, Vol. 17 Issue 2, p290; Subject Term: HUMAN rights; Subject Term: NONFICTION; Reviews & Products: MIDDLE East & North Africa: Governance, Democratization, Human Rights (Book); People: MAGNARELLA, Paul J.; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=3797490&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Carretta, Thomas R. AU - Zelenski, Warren E. AU - Ree, Malcolm James T1 - Basic Attributes Test (BAT) Retest Performance. JO - Military Psychology (Taylor & Francis Ltd) JF - Military Psychology (Taylor & Francis Ltd) Y1 - 2000/09// VL - 12 IS - 3 M3 - Article SP - 221 EP - 232 PB - Taylor & Francis Ltd SN - 08995605 AB - The Basic Attributes Test (BAT) contributes to a U.S. Air Force pilot selection composite known as the Pilot Candidate Selection Method (PCSM). When PCSM was operationally implemented in 1993, no retests were permitted on the BAT. To determine the effects of retesting on mean score change and reliability, the BAT was administered to 477 college students who were then retested after 2 weeks, 3 months, or 6 months. Several important findings were observed. First, about 70% of the students exhibited score improvement on retest, regardless of length of retest interval. Those who performed poorly on the 1st test generally exhibited larger improvements than those who performed well on the 1st test. Second, practice effects diminished as the length of the retest interval increased. For a 6-month retest interval, it was expected that the mean increase in PCSM scores would be about 6 percentile points. The results suggest that BAT retests could be permitted no less than 6 months after initial testing. Third, and very important, BAT scores demonstrated acceptable reliability. The reliability of the psychomotor composite ranged from .775 to .800, and the reliabilities for the other subtests ranged from .474 to .871. [ABSTRACT FROM AUTHOR] AB - Copyright of Military Psychology (Taylor & Francis Ltd) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EDUCATIONAL tests & measurements -- United States KW - COLLEGE students -- United States KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 3455317; Carretta, Thomas R. 1 Zelenski, Warren E. 2 Ree, Malcolm James 3; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 2: 71st Flying Training Wing, Vance Air Force Base, Oklahoma 3: Department of Psychology, Our Lady of the Lake University; Source Info: Jul2000, Vol. 12 Issue 3, p221; Subject Term: EDUCATIONAL tests & measurements -- United States; Subject Term: COLLEGE students -- United States; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 12p; Illustrations: 5 Charts, 1 Graph; Document Type: Article; Full Text Word Count: 4155 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=3455317&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Liou, L. L. AU - Crespo, A. T1 - Dielectric optical waveguide coupling analysis using two-dimensional finite-difference in time-domain simulationsThis article is a US Government work and, as such, is in the public domain in the United states of America . JO - Microwave & Optical Technology Letters JF - Microwave & Optical Technology Letters Y1 - 2000/08/20/ VL - 26 IS - 4 M3 - Article SP - 234 EP - 237 SN - 08952477 AB - Wave coupling in the coupling section of a dielectric optical waveguide is discussed using even- and odd-mode analysis. The dispersion relations of different modes were obtained by solving Maxwell equations. The two-dimensional finite-difference in time-domain method was implemented to solve these equations. The even and odd modes were characterized by applying different excitation sources. A large number of time steps were taken to reveal the fine structure of the propagation modes. The propagation constants of these modes at the coupling frequency were calculated, and the optical-coupling length was determined. The result is in good agreement with those obtained by the Marcatili method. © 2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 26: 234–237, 2000. [ABSTRACT FROM AUTHOR] AB - Copyright of Microwave & Optical Technology Letters is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - DIELECTRIC waveguides KW - FINITE differences KW - TIME-domain analysis KW - NUMERICAL analysis KW - RADIO wave propagation KW - FDTD KW - optical waveguide coupler KW - spectral analysis N1 - Accession Number: 13449524; Liou, L. L. 1 Crespo, A. 1; Affiliation: 1: Sensor Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433-7322; Source Info: 8/20/2000, Vol. 26 Issue 4, p234; Subject Term: DIELECTRIC waveguides; Subject Term: FINITE differences; Subject Term: TIME-domain analysis; Subject Term: NUMERICAL analysis; Subject Term: RADIO wave propagation; Author-Supplied Keyword: FDTD; Author-Supplied Keyword: optical waveguide coupler; Author-Supplied Keyword: spectral analysis; Number of Pages: 4p; Illustrations: 2 Diagrams, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13449524&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lance, Charles E. AU - Johnson, C. Douglas AU - Douthitt, Shane S. AU - Bennett Jr., Winston AU - Harville, Donald L. T1 - Good News: Work Sample Administrators' Global Performance Judgments are (About) as Valid as We've Suspected. JO - Human Performance JF - Human Performance Y1 - 2000/07// VL - 13 IS - 3 M3 - Article SP - 253 EP - 277 PB - Taylor & Francis Ltd SN - 08959285 AB - Data obtained on over 1,500 first-term U.S. Air Force enlisted personnel indicated that work sample administrators' global ratings of work sample performance substantially reflect actual ratee behavior in the work sample, and not potentially biasing factors (e.g., race, gender, amount of recent experience), supporting the "folk wisdom" that these global performance judgments are, in fact, valid and unbiased measures of performance. Good news! [ABSTRACT FROM AUTHOR] AB - Copyright of Human Performance is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - WORK sampling KW - JOB evaluation KW - EMPLOYEES -- Rating of N1 - Accession Number: 3364834; Lance, Charles E. 1 Johnson, C. Douglas 1 Douthitt, Shane S. 1 Bennett Jr., Winston 2 Harville, Donald L. 2; Affiliation: 1: Department of Psychology, The University of Georgia 2: Air Force Research Laboratory; Source Info: 2000, Vol. 13 Issue 3, p253; Subject Term: WORK sampling; Subject Term: JOB evaluation; Subject Term: EMPLOYEES -- Rating of; Number of Pages: 25p; Illustrations: 5 Charts; Document Type: Article; Full Text Word Count: 10726 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=3364834&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hettinger, Lawrence J. AU - Haas, Michael W. T1 - Current Research in Advanced Cockpit Display Concepts. JO - International Journal of Aviation Psychology JF - International Journal of Aviation Psychology Y1 - 2000/07// VL - 10 IS - 3 M3 - Article SP - 227 EP - 229 PB - Taylor & Francis Ltd SN - 10508414 AB - A major portion of the research conducted throughout the history of aviation psychology has been devoted to the analysis and design of cockpit displays. Military and commercial aviators, as well as the travelling public, have significantly benefited from many years of research that have produced displays that facilitate safe and effective crewmember performance. As Koonce (1984) pointed out, the human performance issues raised in the early days of aviation attracted the research attention of some of the most prominent experimental psychologists of the day. As we enter the 21st century, aviation psychology remains one of the most vital areas in applied psychological research, and the design of advanced cockpit displays still serves as a focal point for innovative research programs and paradigms. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of Aviation Psychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - AERONAUTICAL instruments -- Display systems KW - AIRPLANE cockpits N1 - Accession Number: 3384290; Hettinger, Lawrence J. 1 Haas, Michael W. 2; Affiliation: 1: Logicon Technical Services, Inc., Dayton, OH 2: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, OH; Source Info: 2000, Vol. 10 Issue 3, p227; Subject Term: AERONAUTICAL instruments -- Display systems; Subject Term: AIRPLANE cockpits; Number of Pages: 3p; Document Type: Article; Full Text Word Count: 1191 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=3384290&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Van Veldhuizen, David A. AU - Lamont, Gary B. T1 - Multiobjective Evolutionary Algorithms: Analyzing the State-of-the-Art. JO - Evolutionary Computation JF - Evolutionary Computation Y1 - 2000///Summer2000 VL - 8 IS - 2 M3 - Article SP - 125 EP - 147 PB - MIT Press SN - 10636560 AB - Solving optimization problems with multiple (often conflicting) objectives is, generally, a very difficult goal. Evolutionary algorithms (EAs) were initially extended and applied during the mid-eighties in an attempt to stochastically solve problems of this generic class. During the past decade, a variety of multiobjective EA (MOEA) techniques have been proposed and applied to many scientific and engineering applications. Our discussion's intent is to rigorously define multiobjective optimization problems and certain related concepts, present an MOEA classification scheme, and evaluate the variety of contemporary MOEAs. Current MOEA theoretical developments are evaluated; specific topics addressed include fitness functions, Pareto ranking, niching, fitness sharing, mating restriction, and secondary populations. Since the development and application of MOEAs is a dynamic and rapidly growing activity, we focus on key analytical insights based upon critical MOEA evaluation of current research and applications. Recommended MOEA designs are presented, along with conclusions and recommendations for future work. [ABSTRACT FROM AUTHOR] AB - Copyright of Evolutionary Computation is the property of MIT Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MULTIDISCIPLINARY design optimization KW - EVOLUTIONARY computation KW - ALGORITHMS KW - MULTIOBJECTIVE EVOLUTIONARY ALGORITHMS KW - Multiobjective genetic algorithms KW - MULTIOBJECTIVE OPTIMIZATION KW - Pareto optimality N1 - Accession Number: 3098956; Van Veldhuizen, David A. 1 Lamont, Gary B. 2; Affiliation: 1: Air Force Research Laboratory, Optical Radiation Branch, Brooks AFB, TX, USA 2: Department of Electrical and Computer Engineering, Air Force Institute of Technology, Wright-Patterson AFB, OH, USA; Source Info: Summer2000, Vol. 8 Issue 2, p125; Subject Term: MULTIDISCIPLINARY design optimization; Subject Term: EVOLUTIONARY computation; Subject Term: ALGORITHMS; Author-Supplied Keyword: MULTIOBJECTIVE EVOLUTIONARY ALGORITHMS; Author-Supplied Keyword: Multiobjective genetic algorithms; Author-Supplied Keyword: MULTIOBJECTIVE OPTIMIZATION; Author-Supplied Keyword: Pareto optimality; Number of Pages: 23p; Illustrations: 3 Diagrams, 1 Graph; Document Type: Article; Full Text Word Count: 10792 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=3098956&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Slobodnik Jr., Andrew J. AU - Webster, Richard T. T1 - Investigation of microstrip radial stub CAD models from 2 to 60 GHz. JO - International Journal of RF & Microwave Computer-Aided Engineering JF - International Journal of RF & Microwave Computer-Aided Engineering Y1 - 2000/03// VL - 10 IS - 2 M3 - Article SP - 95 EP - 107 SN - 10964290 AB - The accuracy of microstrip radial stub computer-aided design (CAD) models is investigated both experimentally and against electromagnetic simulations. A dual-resonator technique is used to eliminate confounding variables and to obtain accurate experimental data. This technique is extended beyond the earlier perturbation analysis applied to discontinuities to enable checking models that have significant electrical length. Model phase errors in excess of 16° have been found for the microstrip radial stub. © 2000 John Wiley & Sons, Inc. Int J RF and Microwave CAE 10: 95–107, 2000 [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of RF & Microwave Computer-Aided Engineering is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STRIP transmission lines KW - COMPUTER-aided design KW - COMPUTER simulation KW - ELECTROMAGNETISM KW - PERTURBATION (Mathematics) KW - DISCONTINUOUS groups KW - computer-aided design model validation KW - microstrip CAD models KW - microstrip radial stub models N1 - Accession Number: 13360890; Slobodnik Jr., Andrew J. 1 Webster, Richard T. 1; Affiliation: 1: Electromagnetics Technology Division, Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, Massachusetts 01731-3010; Source Info: Mar2000, Vol. 10 Issue 2, p95; Subject Term: STRIP transmission lines; Subject Term: COMPUTER-aided design; Subject Term: COMPUTER simulation; Subject Term: ELECTROMAGNETISM; Subject Term: PERTURBATION (Mathematics); Subject Term: DISCONTINUOUS groups; Author-Supplied Keyword: computer-aided design model validation; Author-Supplied Keyword: microstrip CAD models; Author-Supplied Keyword: microstrip radial stub models; NAICS/Industry Codes: 541512 Computer Systems Design Services; Number of Pages: 13p; Illustrations: 1 Chart, 10 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13360890&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Daniel W. AU - Letourneau, Elizabeth J. AU - Saunders, Benjamin E. AU - Kilpatrick, Dean G. AU - Resnick, Heidi S. AU - Best, Connie L. T1 - DELAY IN DISCLOSURE OF CHILDHOOD RAPE: RESULTS FROM A NATIONAL SURVEY. JO - Child Abuse & Neglect JF - Child Abuse & Neglect Y1 - 2000/02// VL - 24 IS - 2 M3 - Article SP - 273 EP - 287 SN - 01452134 AB - Objective: This study sought to gather representative data regarding the length of time women who were raped before age 18 delayed prior to disclosing such rapes, whom they disclosed to, and variables that predicted disclosure within 1 month. Method: Data were gathered from 3,220 Wave II respondents from the National Women's Study (Resnick, Kilpatrick, Dansky, Saunders, & Best, 1993), a nationally representative telephone survey of women's experiences with trauma and mental health. Of these, 288 retrospectively reported at least one rape prior to their 18th birthday. Details of rape experiences were analyzed to identify predictors of disclosure within 1 month. Results: Fully 28% of child rape victims reported that they had never told anyone about their child rape prior to the research interview; 47% did not disclose for over 5 years post-rape. Close friends were the most common confidants. Younger age at the time of rape, family relationship with the perpetrator, and experiencing a series of rapes were associated with disclosure latencies longer than 1 month; shorter delays were associated with stranger rapes. Logistic regression revealed that age at rape and knowing the perpetrator were independently predictive of delayed disclosure. Conclusions: Delayed disclosure of childhood rape was very common, and long delays were typical. Few variables were identified that successfully predicted disclosure behavior, but older age and rape by a stranger were associated with more rapid disclosure. This suggests that the likelihood of disclosure in a given case is difficult to estimate, and predictions based on single variables are unwarranted. [ABSTRACT FROM AUTHOR] AB - Copyright of Child Abuse & Neglect is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHILD sexual abuse KW - CHILD rape victims KW - SELF-disclosure KW - WOMEN -- Psychology KW - SEX crimes KW - Child rape KW - Child sexual abuse KW - Disclosure N1 - Accession Number: 2714808; Smith, Daniel W. 1; Email Address: smithdw@musc.edu Letourneau, Elizabeth J. 2 Saunders, Benjamin E. 3 Kilpatrick, Dean G. 3 Resnick, Heidi S. 3 Best, Connie L. 3; Affiliation: 1: Department of Psychology, University of Arkansas, Fayetteville, AR, USA 2: United States Air Force Security Forces Center, Charleston, SC, USA 3: National Crime Victims Research & Treatment Center, Medical University of South Carolina, Charleston, SC, USA; Source Info: Feb2000, Vol. 24 Issue 2, p273; Subject Term: CHILD sexual abuse; Subject Term: CHILD rape victims; Subject Term: SELF-disclosure; Subject Term: WOMEN -- Psychology; Subject Term: SEX crimes; Author-Supplied Keyword: Child rape; Author-Supplied Keyword: Child sexual abuse; Author-Supplied Keyword: Disclosure; Number of Pages: 15p; Illustrations: 6 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=2714808&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Brenner, Carl N. T1 - Win. Lose, or Draw: Domestic Politics and the Crucible of War. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 2000///Winter2000 VL - 26 IS - 2 M3 - Book Review SP - 347 EP - 12 PB - Sage Publications Inc. SN - 0095327X AB - Reviews the book "Win, Lose, or Draw: Domestic Politics and the Crucible of War," by Allan C. Stam. KW - WAR KW - NONFICTION KW - STAM, Allan C. KW - WIN, Lose or Draw: Domestic Politics & the Crucible of War (Book) N1 - Accession Number: 2910511; Brenner, Carl N. 1; Affiliation: 1: Department of Political Science, United States Air Force Academy; Source Info: Winter2000, Vol. 26 Issue 2, p347; Subject Term: WAR; Subject Term: NONFICTION; Reviews & Products: WIN, Lose or Draw: Domestic Politics & the Crucible of War (Book); People: STAM, Allan C.; Number of Pages: 4p; Document Type: Book Review; Full Text Word Count: 1130 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=2910511&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Post, David L. AU - Geiselman, Eric E. AU - Post, DL AU - Geiselman, EE AU - Goodyear, CD T1 - Benefits of color coding weapons symbology for an airborne helmet-mounted display. JO - Human Factors JF - Human Factors Y1 - 1999/12// VL - 41 IS - 4 M3 - journal article SP - 515 EP - 523 SN - 00187208 AB - We assessed the advantages of a color-coded weapons symbology for a helmet-mounted display over monochrome symbology by measuring military pilots' performance while they flew air-to-air combat in a simulator. The pilots fired missiles significantly sooner without sacrificing probability of kill when using the color-coded symbology, demonstrating a substantial practical benefit of color. Actual or potential applications of this work include the design of color codes for helmet-mounted and other displays that use complex symbology to assist performance on cognitively challenging tasks. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - HEAD-up displays KW - AIR pilots KW - FLIGHT simulators KW - AUTOMATION N1 - Accession Number: 3042410; Post, David L. Geiselman, Eric E. Post, DL 1 Geiselman, EE Goodyear, CD; Affiliation: 1: Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7022, USA; Source Info: Dec1999, Vol. 41 Issue 4, p515; Subject Term: HEAD-up displays; Subject Term: AIR pilots; Subject Term: FLIGHT simulators; Subject Term: AUTOMATION; Number of Pages: 9p; Illustrations: 1 Diagram, 4 Graphs; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=3042410&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dunlap Jr., Charles J. T1 - THE POLICE-IZATION OF THE MILITARY. JO - Journal of Political & Military Sociology JF - Journal of Political & Military Sociology Y1 - 1999///Winter99 VL - 27 IS - 2 M3 - Article SP - 217 SN - 00472697 AB - This article analyzes the background of the use of the armed forces in a police capacity, discuss the growth of that role in the 1980s and 1990s and forecast an even greater expansion into that role in the near future due to the emerging threat of terrorism in the U.S. The article contends that the increased reliance on military resources for policing is not in the interest of either the armed forces or the public. Finally, the article makes some observations with a view towards minimizing the dangers of "police-ization" of the military while ensuring public safety in the U.S. One important step in setting the right course for the future would be establishing a clear definition of the kinds of threats manifesting a true national security threat and those which present a law enforcement problem recognizing, of course, that overlap can occur from time to time. The nature of threat posed by terrorism, if characterized as a national security risk, carries great potential to force that next step. No one should suffer the illusion that military forces could ever execute the laws with the same sensitivity to civil liberties as regular police forces. KW - MILITARY police KW - ARMED Forces KW - TERRORISM KW - NATIONAL security -- United States KW - LAW enforcement KW - UNITED States N1 - Accession Number: 2977487; Dunlap Jr., Charles J. 1; Affiliation: 1: United States Air Force.; Source Info: Winter99, Vol. 27 Issue 2, p217; Subject Term: MILITARY police; Subject Term: ARMED Forces; Subject Term: TERRORISM; Subject Term: NATIONAL security -- United States; Subject Term: LAW enforcement; Subject Term: UNITED States; NAICS/Industry Codes: 922190 Other Justice, Public Order, and Safety Activities; NAICS/Industry Codes: 922120 Police Protection; NAICS/Industry Codes: 911110 Defence services; NAICS/Industry Codes: 928110 National Security; Number of Pages: 16p; Document Type: Article; Full Text Word Count: 5887 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=2977487&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - RPRT AU - Ramesh, R. AU - Andrews, Dee H. T1 - DISTRIBUTED MISSION TRAINING: TEAMS, VIRTUAL REALITY, and REAL-TIME NETWORKING. JO - Communications of the ACM JF - Communications of the ACM Y1 - 1999/09// VL - 42 IS - 9 M3 - Industry Overview SP - 64 EP - 67 SN - 00010782 AB - The article analyzes the potential and challenges in Distributed Mission Training (DMT) concept that provides a powerful framework to develop integrated virtual, constructive and real-time team training platforms, especially, focusing on the on-going research in the U.S. Air Force. The objective of DMT is to concurrently train people in team efforts involving coordination, communication and decision making and teams may not necessarily be co-located and could be engaged in independent as well as coordinated tasks at remote sites. Some of the critical questions, in this regard, are how and when DMT should be used as part of a formal training program involving a multitude of team skills and equipment, what are the technological design options and how should DMT systems be configured. The article states that answers to these questions in the form of an analysis of a real-world DMT implementation, practical experience with DMT and performance assessments from controlled team training studies. KW - DECISION making KW - COMMUNICATION KW - INDUSTRIAL design KW - UNITED States KW - UNITED States. Air Force N1 - Accession Number: 11951053; Ramesh, R. 1; Email Address: rramesh@acsu.buffalo.edu Andrews, Dee H. 2; Email Address: Dee.Andrews@williams.af.mil; Affiliation: 1: Associate Professor of Management Science and Systems, School of Management, SUNY at Buffalo, NY. 2: Technical Advisor Warfighter Training Research Division,Air Force Research Laboratory, Mesa, AZ.; Source Info: Sep99, Vol. 42 Issue 9, p64; Subject Term: DECISION making; Subject Term: COMMUNICATION; Subject Term: INDUSTRIAL design; Subject Term: UNITED States; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 928110 National Security; Number of Pages: 4p; Document Type: Industry Overview L3 - 10.1145/315762.315775 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11951053&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bell, Herbert H. T1 - THE EFFECTIVENESS OF DISTRIBUTED MISSION TRAINING. JO - Communications of the ACM JF - Communications of the ACM Y1 - 1999/09// VL - 42 IS - 9 M3 - Article SP - 72 EP - 78 SN - 00010782 AB - The article highlights the effectiveness of Distributed Mission Training (DMT), a synthetic training environment that can enhance teamwork performance. DMT has adaptively focused and integrated virtual reality and networking technologies for team training in dynamic operational environments, in which, intra and inter team communication, coordination and decision making in such environments are central to mission-critical team performance. Though these attributes are significant in military operations, especially in aircrafts, they define effective teamwork in general, from sports and entertainment to production and service environments. A naturalistic perspective on training is to view the process and its effectiveness from the way people use their experience to analyze, interact and make decisions in field settings. A central theme emerging from an analysis of training processes is that decision making stems from situational awareness and assessment, prioritization in dynamic task environments and action/feedback structures in event management. While DMT has made significant technical progress, there still are a number of human-centered effective and efficient training. KW - MILITARY education KW - VIRTUAL reality KW - COMPUTER networks KW - DECISION making KW - TEAMS in the workplace N1 - Accession Number: 11951055; Bell, Herbert H. 1; Email Address: herbert.bell@williams.af.mil; Affiliation: 1: Chief of the Aircrew Training Branch, Warfighter Training research Division, Human Effectiveness Directorate, Air Force Research Laboratory, Mesa, AZ.; Source Info: Sep99, Vol. 42 Issue 9, p72; Subject Term: MILITARY education; Subject Term: VIRTUAL reality; Subject Term: COMPUTER networks; Subject Term: DECISION making; Subject Term: TEAMS in the workplace; NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 611110 Elementary and Secondary Schools; NAICS/Industry Codes: 928110 National Security; NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; Number of Pages: 7p; Document Type: Article L3 - 10.1145/315762.315779 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11951055&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Peppler, Philipp W. AU - Stephens, Steve T1 - IMAGE GENERATION SYSTEMS IN VIRTUAL TRAINING PLATFORMS. JO - Communications of the ACM JF - Communications of the ACM Y1 - 1999/09// VL - 42 IS - 9 M3 - Article SP - 85 EP - 88 SN - 00010782 AB - The article focuses on advanced image generating (IG) systems in virtual training platforms. Computer IG in virtual environments is an important component of Distributed Mission Training (DMT) systems. DMT is one of the limiting factors of performance that is technologically challenging in most synthetic virtual training environments where visual cues play a critical role. Computer-based training has significantly evolved by integrating computer-generated imagery at all levels of the education process. Three principal issues in this process are image complexity, image clarity and speed of computation and display. This novel technology proves ideally suited to fast-moving training environments such as flight simulators. The article emphasizes the need to do research in achieving capabilities of visual systems such as resolution, contrast and brightness and reports that while Nicolas systems are revolutionizing the high-end IG systems, commercial PC-based graphics will soon accelerate DMT visual systems with greatly reduced costs. KW - IMAGE analysis KW - VIRTUAL machine systems KW - COMPUTER graphics KW - FLIGHT simulators N1 - Accession Number: 11951057; Peppler, Philipp W. 1; Email Address: phil.peppler@williams.af.mil Stephens, Steve 1; Email Address: steve.stephens@williams.af.mil; Affiliation: 1: Visual system Development,Air Force Research Laboratory/Warfighter Training Research Division, Mesa, AZ.; Source Info: Sep99, Vol. 42 Issue 9, p85; Subject Term: IMAGE analysis; Subject Term: VIRTUAL machine systems; Subject Term: COMPUTER graphics; Subject Term: FLIGHT simulators; Number of Pages: 4p; Document Type: Article L3 - 10.1145/315762.315782 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11951057&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Meredith, James H. T1 - Hemingway's U.S. 3rd Army Inspector General Interview During World War II. JO - Hemingway Review JF - Hemingway Review Y1 - 1999/09//1999 Centennial Issue VL - 18 IS - 2 M3 - Interview SP - 90 EP - 101 SN - 02763362 AB - Presents a transcript of the United States Third Army's investigation into writer Ernest Hemingway's activities as a World War II correspondent in Rambouillet, France, during the final days of August 1944. Accusations made against Hemingway by his fellow reporters; Nature of the infractions on which the investigations were focused; False testimony given by Hemingway. KW - WORLD War, 1939-1945 -- Journalists KW - AMERICAN authors KW - HEMINGWAY, Ernest, 1899-1961 N1 - Accession Number: 2296425; Meredith, James H. 1; Affiliation: 1: United States Air Force Academy; Source Info: 1999 Centennial Issue, Vol. 18 Issue 2, p90; Subject Term: WORLD War, 1939-1945 -- Journalists; Subject Term: AMERICAN authors; People: HEMINGWAY, Ernest, 1899-1961; Number of Pages: 12p; Illustrations: 1 Black and White Photograph; Document Type: Interview; Full Text Word Count: 2831 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=2296425&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abadi, Jacob T1 - PRAGMATISM AND RHETORIC IN YEMEN'S POLICY TOWARD ISRAEL. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 1999///Fall99 VL - 16 IS - 2 M3 - Article SP - 95 EP - 118 SN - 87553449 AB - This article discusses how Yemen's policy toward Israel was both pragmatic and calculating despite the radical tone of its announcements and the harshness of its anti-Israel declarations. Yemen's hostility to the Jewish State started in 1947, when the United Nations adopted the Partition Plan for Palestine. A wave of pogroms against the Jews erupted in Aden when news of the Partition Plan reached Yemen. In 1967, the Six-Day Civil War broke in the country. In an attempt to explore the reasons for the Civil War, observers concluded that both the U.S. and Great Britain sought the withdrawal of Egyptian forces from Yemen and that the war's objective was to restore the Royalist regime. While attitude of South Yemen towards Israel remained uncompromising, the approach of Yemen Arab Republic (YAR) was somewhat conciliatory. In the early months of 1978, the YAR joined the Gulf states, Somalia, Djibouti, Tunisia, Mauritania, Saudi Arabia and Jordan. KW - GOVERNMENT policy KW - INTERNATIONAL relations KW - INTERNATIONAL law KW - CIVIL war KW - RESISTANCE to government KW - POLITICAL science KW - TERRITORIAL partition KW - ISRAEL KW - YEMEN (Republic) N1 - Accession Number: 2126408; Abadi, Jacob 1; Affiliation: 1: Associate Professor of History, United States Air Force Academy, Colorado Springs, CO 80918; Source Info: Fall99, Vol. 16 Issue 2, p95; Subject Term: GOVERNMENT policy; Subject Term: INTERNATIONAL relations; Subject Term: INTERNATIONAL law; Subject Term: CIVIL war; Subject Term: RESISTANCE to government; Subject Term: POLITICAL science; Subject Term: TERRITORIAL partition; Subject Term: ISRAEL; Subject Term: YEMEN (Republic); NAICS/Industry Codes: 928120 International Affairs; NAICS/Industry Codes: 911410 Foreign affairs; Number of Pages: 24p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=2126408&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Panda, Brajendra AU - Giordano, Joseph T1 - DEFENSIVE INFORMATION WARFARE. JO - Communications of the ACM JF - Communications of the ACM Y1 - 1999/07// VL - 42 IS - 7 M3 - Article SP - 30 EP - 32 SN - 00010782 AB - This article discusses the changing perception of the people towards the use of computers. Computers are no longer viewed as mere number-crunching devices nor is the use of computers limited to the scientific and engineering communities. The advent of high-speed networking technologies has made information sharing through the Internet a prevailing practice for every conceivable segment of society from governments to business and industry to private citizens. Every day, millions of people use the Internet to search for different kinds of information stored in computers and databases that may be on the other side of town or half a world away. While most of these users access data legitimately, some use illicit ways to access and invade other computers. It is extremely hard to protect systems from all types of unauthorized access. According to the article, the objective of defensive information warfare ranges from ensuring authorized use of computer resources to providing complete, uninterrupted operation of computer systems throughout all of the phases of an information attack and defensive information warfare will remain an active research and development area for years to come as new technologies emerge. KW - COMPUTERS KW - INFORMATION warfare KW - INFORMATION technology KW - INTERNET KW - DATABASE management KW - TECHNOLOGICAL innovations N1 - Accession Number: 12513671; Panda, Brajendra 1; Email Address: panda@cs.und.edu Giordano, Joseph 2; Email Address: giordanoj@rl.af.mil; Affiliation: 1: Assistant Professor of Computer Science at the University of North Dakota. 2: Technical Advisor for the Defensive Information Warfare Branch of the U. S. Air Force Research Laboratory, Rome Research Site, Rome, NY.; Source Info: Jul99, Vol. 42 Issue 7, p30; Subject Term: COMPUTERS; Subject Term: INFORMATION warfare; Subject Term: INFORMATION technology; Subject Term: INTERNET; Subject Term: DATABASE management; Subject Term: TECHNOLOGICAL innovations; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 334111 Electronic Computer Manufacturing; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443142 Electronics Stores; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 518210 Data Processing, Hosting, and Related Services; NAICS/Industry Codes: 517110 Wired Telecommunications Carriers; NAICS/Industry Codes: 519130 Internet Publishing and Broadcasting and Web Search Portals; Number of Pages: 3p; Document Type: Article L3 - 10.1145/306549.306559 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12513671&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davidovitz, Marat AU - Franchi, Peter T1 - Design guidelines for a low-loss interconnection between two strip linesThis article is a US Government work and, as such, is in the public domain in the Unitted States of America. . JO - Microwave & Optical Technology Letters JF - Microwave & Optical Technology Letters Y1 - 1999/05/05/ VL - 21 IS - 3 M3 - Article SP - 168 EP - 170 SN - 08952477 AB - The characteristics of a low-loss vertical interconnection between two strip lines are analyzed and a set of design curves is deduced. The strip lines are capacitively coupled through a quarter-wave longitudinal slit. A perturbation approach is applied to calculate the power loss associated with the slot radiation into the parallel-plate mode. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 21: 168–170, 1999. [ABSTRACT FROM AUTHOR] AB - Copyright of Microwave & Optical Technology Letters is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - KNOT theory KW - DYNAMICS KW - LOW-dimensional topology KW - MAGNETISM KW - RADIATION KW - ELECTROMAGNETIC waves KW - SCATTERING (Physics) KW - aperture coupling KW - interconnections KW - strip lines N1 - Accession Number: 13448862; Davidovitz, Marat 1 Franchi, Peter 1; Affiliation: 1: Air Force Research Laboratory, SNHA, Hanscom AFB, Massachusetts 01731-3010; Source Info: 5/5/99, Vol. 21 Issue 3, p168; Subject Term: KNOT theory; Subject Term: DYNAMICS; Subject Term: LOW-dimensional topology; Subject Term: MAGNETISM; Subject Term: RADIATION; Subject Term: ELECTROMAGNETIC waves; Subject Term: SCATTERING (Physics); Author-Supplied Keyword: aperture coupling; Author-Supplied Keyword: interconnections; Author-Supplied Keyword: strip lines; Number of Pages: 3p; Illustrations: 1 Diagram, 3 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13448862&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Watson, P. M. AU - Cho, Choonsik AU - Gupta, K. C. T1 - Electromagnetic-artificial neural network model for synthesis of physical dimensions for multilayer asymmetric coupled transmission structures (invited article). JO - International Journal of RF & Microwave Computer-Aided Engineering JF - International Journal of RF & Microwave Computer-Aided Engineering Y1 - 1999/05// VL - 9 IS - 3 M3 - Article SP - 175 EP - 186 SN - 10964290 AB - A methodology for synthesis (leading to physical dimensions) of multilayer asymmetric coupled microstrip lines using artificial neural network models is presented. Models are appropriate for design and optimization of multilayer configurations for circuits like filters, baluns, and directional couplers. Proposed methodology is demonstrated by designing a two-layer coupled line filter. ©1999 John Wiley & Sons, Inc. Int J RF and Microwave CAE 9: 175–186, 1999. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of RF & Microwave Computer-Aided Engineering is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEURAL networks (Computer science) KW - COMPUTER-aided design KW - COUPLED mode theory (Wave-motion) KW - STRIP transmission lines KW - COMPUTER science KW - artificial neural network KW - computer-aided design KW - inverse modeling KW - multilayer coupled lines KW - synthesis N1 - Accession Number: 13360845; Watson, P. M. 1; Email Address: watson@el.wpafb.af.mil Cho, Choonsik 2 Gupta, K. C. 2; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson Air Force Base, Ohio 45433 2: Center for Advanced Manufacturing and Packaging of Microwave, Optical, and Digital Electronics (CAMPmode), University of Colorado at Boulder, Boulder, Colorado 80309; Source Info: May1999, Vol. 9 Issue 3, p175; Subject Term: NEURAL networks (Computer science); Subject Term: COMPUTER-aided design; Subject Term: COUPLED mode theory (Wave-motion); Subject Term: STRIP transmission lines; Subject Term: COMPUTER science; Author-Supplied Keyword: artificial neural network; Author-Supplied Keyword: computer-aided design; Author-Supplied Keyword: inverse modeling; Author-Supplied Keyword: multilayer coupled lines; Author-Supplied Keyword: synthesis; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541512 Computer Systems Design Services; Number of Pages: 12p; Illustrations: 7 Diagrams, 14 Charts, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13360845&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Creech, Gregory L. AU - Zurada, Jacek M. T1 - Neural network modeling of GaAs IC material and MESFET device characteristicsThis work was supported in part by the ONR under Grant N00014-93-1-0855. . JO - International Journal of RF & Microwave Computer-Aided Engineering JF - International Journal of RF & Microwave Computer-Aided Engineering Y1 - 1999/05// VL - 9 IS - 3 M3 - Article SP - 241 EP - 253 SN - 10964290 AB - This paper provides an overview of research focused on the utilization of neurocomputing technology to model critical in-process integrated circuit material and device characteristics. Artificial neural networks are employed to develop models of complex relationships between material and device characteristics at critical stages of the semiconductor fabrication process. Measurements taken and subsequently used in modeling include doping concentrations, layer thicknesses, planar geometries, resistivities, device voltages, and currents. The neural network architecture utilized in this research is the multilayer perceptron neural network (MLPNN). The MLPNN is trained in the supervised mode using the generalized delta learning rule. The MLPNN has demonstrated with good results the ability to model these characteristics, and provide an effective tool for parametric yield prediction and whole wafer characterization in semiconductor manufacturing. ©1999 John Wiley & Sons, Inc. Int J RF and Microwave CAE 9: 241–253, 1999. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of RF & Microwave Computer-Aided Engineering is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEURAL networks (Computer science) KW - COMPUTER-aided design KW - MICROWAVE circuits KW - INTEGRATED circuits KW - COMPUTER science KW - artificial neural network KW - integrated circuit KW - microwave KW - modeling KW - yield N1 - Accession Number: 13360841; Creech, Gregory L. 1; Email Address: gregory.creech@sn.wpafb.af.mil Zurada, Jacek M. 2; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Ohio 45433-7319 2: Department of Computer Science and Engineering, University of Louisville, Louisville, Kentucky 40292; Source Info: May1999, Vol. 9 Issue 3, p241; Subject Term: NEURAL networks (Computer science); Subject Term: COMPUTER-aided design; Subject Term: MICROWAVE circuits; Subject Term: INTEGRATED circuits; Subject Term: COMPUTER science; Author-Supplied Keyword: artificial neural network; Author-Supplied Keyword: integrated circuit; Author-Supplied Keyword: microwave; Author-Supplied Keyword: modeling; Author-Supplied Keyword: yield; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541512 Computer Systems Design Services; NAICS/Industry Codes: 423690 Other Electronic Parts and Equipment Merchant Wholesalers; Number of Pages: 13p; Illustrations: 7 Diagrams, 3 Charts, 2 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13360841&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Watson, P. M. AU - Gupta, K. C. AU - Mahajan, R. L. T1 - Applications of knowledge-based artificial neural network modeling to microwave components. JO - International Journal of RF & Microwave Computer-Aided Engineering JF - International Journal of RF & Microwave Computer-Aided Engineering Y1 - 1999/05// VL - 9 IS - 3 M3 - Article SP - 254 EP - 260 SN - 10964290 AB - This paper expands upon reported methods for utilizing prior knowledge for reducing complexity of input–output relationships that an ANN must learn. Previously, two simple methods, difference method and prior knowledge input method, were demonstrated for new model developments. This paper utilizes knowledge-based modeling techniques for novel microwave modeling applications. ©1999 John Wiley & Sons, Inc. Int J RF and Microwave CAE 9: 254–260, 1999. [ABSTRACT FROM AUTHOR] AB - Copyright of International Journal of RF & Microwave Computer-Aided Engineering is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NEURAL networks (Computer science) KW - COMPUTER-aided design KW - MICROWAVE circuits KW - COMPUTER science KW - DIGITAL electronics KW - artificial neural network KW - computer-aided design KW - knowledge based KW - microwave KW - modeling N1 - Accession Number: 13360840; Watson, P. M. 1; Email Address: watson@el.wpafb.af.mil Gupta, K. C. 2 Mahajan, R. L. 2; Affiliation: 1: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson Air Force Base, Ohio 2: Center for Advanced Manufacturing and Packaging of Microwave, Optical, and Digital Electronics (CAMPmode), University of Colorado at Boulder, Boulder, Colorado 80309; Source Info: May1999, Vol. 9 Issue 3, p254; Subject Term: NEURAL networks (Computer science); Subject Term: COMPUTER-aided design; Subject Term: MICROWAVE circuits; Subject Term: COMPUTER science; Subject Term: DIGITAL electronics; Author-Supplied Keyword: artificial neural network; Author-Supplied Keyword: computer-aided design; Author-Supplied Keyword: knowledge based; Author-Supplied Keyword: microwave; Author-Supplied Keyword: modeling; NAICS/Industry Codes: 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); NAICS/Industry Codes: 541710 Research and development in the physical, engineering and life sciences; NAICS/Industry Codes: 541512 Computer Systems Design Services; Number of Pages: 7p; Illustrations: 3 Diagrams, 11 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=13360840&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mitchum, Albert T1 - DOCTRINAL MODEL FOR PKO. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 1999///Spring99 VL - 16 IS - 1 M3 - Article SP - 139 EP - 145 SN - 87553449 AB - This article focuses on the doctrinal model for Peace Keeping Operations (PKO). The goal of PKO is long term peace and stability which dictates decisions made by design and not by default. Its mission and the desired end-state must be considered simultaneously if one is to lead logically to the other. In the case of the United Nations Transition Administration in Eastern Slavonia mandate for Peace Keeping, the end-state is a politically integrated, demilitarized and economically viable mini-state within the national structure of Croatia. One definition of its success would be the peaceful reintegration of the Region of Eastern Slavonia, Baranja and Western Sirmium. KW - PEACEKEEPING forces KW - PEACE KW - POLITICAL stability KW - MANDATES (Territories) KW - STATES (Political subdivisions) KW - SUCCESS KW - SLAVONIA (Croatia) KW - BARANJA (Croatia) KW - CROATIA N1 - Accession Number: 1589411; Mitchum, Albert 1; Affiliation: 1: Political Advisor, Commander United States Air Force, Europe; Source Info: Spring99, Vol. 16 Issue 1, p139; Subject Term: PEACEKEEPING forces; Subject Term: PEACE; Subject Term: POLITICAL stability; Subject Term: MANDATES (Territories); Subject Term: STATES (Political subdivisions); Subject Term: SUCCESS; Subject Term: SLAVONIA (Croatia); Subject Term: BARANJA (Croatia); Subject Term: CROATIA; Number of Pages: 7p; Illustrations: 3 Diagrams; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=1589411&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abadi, Jacob T1 - Historical Dictionary of Palestine. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 1999///Spring99 VL - 16 IS - 1 M3 - Book Review SP - 289 EP - 290 SN - 87553449 AB - This article reviews the book "Historical Dictionary of Palestine," by Nafez Y. Nazzal and Laila A. Nazzal. KW - HISTORY -- Dictionaries KW - NONFICTION KW - NAZZAL, Nafez Y. KW - NAZZAL, Laila A. KW - HISTORICAL Dictionary of Palestine (Book) N1 - Accession Number: 1589382; Abadi, Jacob 1; Affiliation: 1: The United States Air Force Academy; Source Info: Spring99, Vol. 16 Issue 1, p289; Subject Term: HISTORY -- Dictionaries; Subject Term: NONFICTION; Reviews & Products: HISTORICAL Dictionary of Palestine (Book); People: NAZZAL, Nafez Y.; People: NAZZAL, Laila A.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=1589382&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Newton, Harry N. AU - Barnhart, Cynthia AU - Vance, Pamela H. T1 - Constructing Railroad Blocking Plans to Minimize Handling Costs[*][1]. JO - Transportation Science JF - Transportation Science Y1 - 1998/11// VL - 32 IS - 4 M3 - Article SP - 330 PB - INFORMS: Institute for Operations Research SN - 00411655 AB - On major domestic railroads, a typical general merchandise shipment may pass through many classification yards on its route from origin to destination. At these yards, the incoming traffic, which may consist of a number of individual shipments, is reclassified (sorted and grouped together) to be placed on outgoing trains. Each reclassification incurs costs due to handling and delay. To prevent shipments from being reclassified at every yard they pass through, several shipments may be grouped together to form a block. A block has associated with an origin-destination pair that may or may not be the origin or destination of any of the individual cars contained in the block. The objective of the railroad blocking problem is to choose which blocks to build at each yard and to assign sequences of blocks to deliver each shipment to minimize total mileage, handling, and delay costs. We model the railroad blocking problem as a network design problem in which yards are represented by nodes and blocks by arcs. Our model is intended as a strategic decision-making tool. We develop a column generation, branch-and- bound algorithm in which attractive paths for each shipment are generated by solving a shortest path problem. Our solution approach is unique in constraining the classification resources of each yard and simultaneously solving for different priority classes of shipments. We implement our algorithm and find near-optimal solutions in about one hour for the blocking problem of a large domestic railroad, in which the paths that shipments may take in the physical network are restricted. The resulting network design problem has 150 nodes, 1300 commodities, and 6800 possible arcs (blocks). We test the robustness of our solution on 19 test instances that are variations of the data for the real-world problems. If shipments are restricted to following one of a limited number of paths in the rail network, then, in four hours or less, our algorithm finds solutions within 0.4% of optimal for all test cases. Furthermore, the solutions obtained are no more than 3.9% from optimal even if all possible paths are allowed. [ABSTRACT FROM AUTHOR] AB - Copyright of Transportation Science is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RAILROADS KW - INTEGER programming KW - SHIPMENT of goods KW - COST control KW - DECISION making KW - ALGORITHMS KW - COMMERCIAL products N1 - Accession Number: 3088859; Newton, Harry N. 1 Barnhart, Cynthia 2 Vance, Pamela H. 3; Affiliation: 1: Department of Mathematical Sciences, United States Air Force Academy, USAF Academy, Colorado 80840. 2: Department of Civil and Environmental Engineering, M.I.T., Cambridge, Massachusetts 02139. 3: Goizueta Business School, Emory University, Atlanta, Georgia 30322.; Source Info: Nov98, Vol. 32 Issue 4, p330; Subject Term: RAILROADS; Subject Term: INTEGER programming; Subject Term: SHIPMENT of goods; Subject Term: COST control; Subject Term: DECISION making; Subject Term: ALGORITHMS; Subject Term: COMMERCIAL products; NAICS/Industry Codes: 523140 Commodity Contracts Brokerage; NAICS/Industry Codes: 523130 Commodity Contracts Dealing; NAICS/Industry Codes: 482114 Passenger rail transportation; NAICS/Industry Codes: 237990 Other Heavy and Civil Engineering Construction; NAICS/Industry Codes: 482112 Short Line Railroads; NAICS/Industry Codes: 482111 Line-Haul Railroads; Number of Pages: 16p; Illustrations: 5 Diagrams, 6 Charts, 1 Map; Document Type: Article; Full Text Word Count: 9685 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=3088859&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Davies, Michaela AU - Stankov, Lazar AU - Roberts, Richard D. T1 - Emotional Intelligence: In Search of an Elusive Construct. JO - Journal of Personality & Social Psychology JF - Journal of Personality & Social Psychology Y1 - 1998/10// VL - 75 IS - 4 M3 - Article SP - 989 EP - 1015 SN - 00223514 AB - The view that emotional intelligence should be included within the traditional cognitive abilities framework was explored in 3 studies (total N = 530) by investigating the relations among measures of emotional intelligence, traditional human cognitive abilities, and personality. The studies suggest that the status of the emotional intelligence construct is limited by measurement properties of its tests. Measures based on consensual scoring exhibited low reliability. Self-report measures had salient loadings on well-established personality factors, indicating a lack of divergent validity. These data provide controvertible evidence for the existence of a separate Emotion Perception factor that (perhaps) represents the ability to monitor another individual's emotions. This factor is narrower than that postulated within current models of emotional intelligence. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Personality & Social Psychology is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMOTIONAL intelligence KW - COGNITION KW - PERSONALITY KW - PSYCHOLOGICAL tests KW - SOCIAL psychology N1 - Accession Number: 1313871; Davies, Michaela 1 Stankov, Lazar 1; Email Address: lazar@psych.usyd.edu.au Roberts, Richard D. 2; Affiliation: 1: University of Sydney 2: National Research Council and Air Force Research Laboratory, Brooks Air Force Base; Source Info: Oct98, Vol. 75 Issue 4, p989; Subject Term: EMOTIONAL intelligence; Subject Term: COGNITION; Subject Term: PERSONALITY; Subject Term: PSYCHOLOGICAL tests; Subject Term: SOCIAL psychology; Number of Pages: 27p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=1313871&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hall, Deborah L. AU - Kafadar, Karen AU - Malkinson, Alvin M. T1 - Statistical methodology for assessing homology of intronic regions of genes. JO - Canadian Journal of Statistics JF - Canadian Journal of Statistics Y1 - 1998/09// VL - 26 IS - 3 M3 - Article SP - 455 EP - 465 SN - 03195724 AB - Nous considérons le problème d'évaluer statistiquement la similarité entre des régions introniques de gènes dans l'ADN. Les algorithmes actuels sont fondés sur l'association d'une séqunce d'intérět avec des séquences d'ADN connues dans une banque de gènes, et sont conçus premièrement pour évaluer l'homologie entre les régions exoniques de gènes. La plus grande part de la recherche se concentre sur les regions exoniques parce qu'elles ont une importance biologique claire, codant pour les protéines, et, de par ce fait, ont tendance à ětre plus conservées dans l'évolution que les régions introniques. Afin de déterminer si les caractéristiques introniques des gènes dont l'expression est hautement sensible aux perturbations de l'environnement different des gènes qui ont une expression plus constante, une collection d'oncogènes, de gènes supprimeurs de tumeurs, et'enes non-régulatoires impliqués dans le métabolisme de l'énergie sont comparés. Une analyse des traits des régions introniques de ces génes a pour résultat le regroupement par groupe régulatoire. De plus, le test de Billingsley pour la structure de Markov (1961) suggère que 67% des régions introniques de cette collection de gènes démontre une évidence de structure nonaléatoire, indicant la possibilité d'une fonction biologique pources régions. Le résultat du test d'homologie de Billingsley est utilisé comme intrant dans un algorithme de regroupement. L'importance biologique de cette méthodologie repose sur l'identification de grupes fondés sur les régions introniques de gènes de fonctions inconnues. Avec l'avènement de techniques de mise en sequence rapide, il y a un grand besoin de techniques statistiques afin d'aider à identifier le rǒle de portions de gènes. Ces méthodes peuvent ětre utilisées afin d'évaluer le groupe fonctionnel auquel tel géne peut possiblement appartenir. (French) [ABSTRACT FROM AUTHOR] AB - Copyright of Canadian Journal of Statistics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - STATISTICS KW - HOMOLOGY (Biology) KW - HOMOLOGY theory KW - INTRONS KW - MARKOV processes KW - NON-coding RNA KW - ONCOGENES N1 - Accession Number: 61888007; Hall, Deborah L. 1,2 Kafadar, Karen 3 Malkinson, Alvin M. 4; Affiliation: 1: United States Air Force Academy, University of Colorado at Denver and University of Colorado Health Sciences Center 2: Department of Mathematical Sciences, United States Air Force Academy, USAF Academy, Colorado U.S.A. 80840-6252 email: halldl.dfms@usafa.af.mil 3: Department of Mathematics, University of Colorado- Denver Denver, Colorado U.S.A. 80217-3364 4: Department of Pharmaceutical Sciences, School of Pharmacy, University of Colorado Health Sciences Center, Denver, Colorado U.S.A. 80262-0238; Source Info: Sep1998, Vol. 26 Issue 3, p455; Subject Term: STATISTICS; Subject Term: HOMOLOGY (Biology); Subject Term: HOMOLOGY theory; Subject Term: INTRONS; Subject Term: MARKOV processes; Subject Term: NON-coding RNA; Subject Term: ONCOGENES; Number of Pages: 11p; Document Type: Article L3 - 10.2307/3315769 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=61888007&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Snow, Michael P. AU - Williges, Robert C. AU - Snow, M P AU - Williges, R C T1 - Empirical models based on free-modulus magnitude estimation of perceived presence in virtual environments. JO - Human Factors JF - Human Factors Y1 - 1998/09// VL - 40 IS - 3 M3 - journal article SP - 386 EP - 402 SN - 00187208 AB - A series of 3 studies was conducted to test free-modulus magnitude estimation as a measure of perceived presence in virtual environments (VEs) and to model the first- and second-order effects of 11 VE system parameters on perceived presence across 5 subtasks. Sequential experimentation techniques were used to build 4 empirical models using polynomial regression. An integrated empirical model of data combined across 2 experiments demonstrated that all significant factors had a positive effect on perceived presence. Three of these parameters--field of view, sound, and head tracking--had almost 3 times as much influence on presence than the other 4 significant parameters, which were visual display resolution, texture mapping, stereopsis, and scene update rate. Sequential experimentation was an efficient tool for building empirical models of perceived presence, but the subjective nature of this phenomenon and individual differences made data bridging across sequential studies problematic. It was concluded that magnitude estimation is a useful measure of perceived presence, and the resulting polynomial regression models can be used to facilitate VE system design decisions. This research has broad application in the selection and design of VE system components and overall design of VE systems. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - VIRTUAL machine systems KW - PERCEPTION KW - VIRTUAL reality N1 - Accession Number: 1379234; Snow, Michael P. Williges, Robert C. Snow, M P 1 Williges, R C; Affiliation: 1: U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7521, USA; Source Info: Sep1998, Vol. 40 Issue 3, p386; Subject Term: VIRTUAL machine systems; Subject Term: PERCEPTION; Subject Term: VIRTUAL reality; Number of Pages: 17p; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=1379234&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abadi, Jacob T1 - THE SINO-INDIAN CONFLICT OF 1962--A TEST CASE FOR INDIA'S POLICY OF NON-ALIGNMENT. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 1998///Fall98 VL - 15 IS - 2 M3 - Article SP - 11 EP - 29 SN - 87553449 AB - The article analyzes the Sino-Indian conflict of 1962 and its significance in the discussion of India's non-alignment policy. It is argued that although the non-alignment policy may be a realistic approach to India's foreign policy after independence, it had limitations and defects which often turned into an impractical approach even during Cold War. During the early 1950s, the government of Prime Minister Jawaharlal Nehru had formulated India's policy both domestically and towards the Great Powers. The plan of India was to pursue a policy of democratic socialism and in foreign policy, non-alignment became the official foundation. Prior to the Sino-Indian border conflict, Nehru said that India would not be able to maintain its independence if it requested for military assistance from other countries. KW - SINO-Indian Border Dispute, 1957- KW - NONALIGNMENT KW - INTERNATIONAL relations KW - COLD War, 1945-1989 KW - WORLD politics -- 1945-1989 KW - MILITARY assistance KW - INDIA -- Politics & government KW - INDIA KW - NEHRU, Jawaharlal, 1889-1964 N1 - Accession Number: 1388367; Abadi, Jacob 1; Affiliation: 1: Associate Professor of History, United States Air Force Academy. Colorado Springs, CO 80918; Source Info: Fall98, Vol. 15 Issue 2, p11; Subject Term: SINO-Indian Border Dispute, 1957-; Subject Term: NONALIGNMENT; Subject Term: INTERNATIONAL relations; Subject Term: COLD War, 1945-1989; Subject Term: WORLD politics -- 1945-1989; Subject Term: MILITARY assistance; Subject Term: INDIA -- Politics & government; Subject Term: INDIA; NAICS/Industry Codes: 911410 Foreign affairs; NAICS/Industry Codes: 928120 International Affairs; People: NEHRU, Jawaharlal, 1889-1964; Number of Pages: 19p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=1388367&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abadi, Jacob T1 - Arab National Communism in the Jewish State. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 1998///Fall98 VL - 15 IS - 2 M3 - Book Review SP - 218 EP - 221 SN - 87553449 AB - The article reviews the book "Arab National Communism in the Jewish State," by Ilana Kaufman. KW - COMMUNISM KW - NONFICTION KW - KAUFMAN, Ilana KW - ARAB National Communism in the Jewish State (Book) N1 - Accession Number: 1388398; Abadi, Jacob 1; Affiliation: 1: The United States Air Force Academy; Source Info: Fall98, Vol. 15 Issue 2, p218; Subject Term: COMMUNISM; Subject Term: NONFICTION; Reviews & Products: ARAB National Communism in the Jewish State (Book); People: KAUFMAN, Ilana; Number of Pages: 4p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=1388398&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Donet, Chuck T1 - Space-vehicle battery. JO - Design News JF - Design News Y1 - 1998/06/22/ VL - 54 IS - 12 M3 - Article SP - 76 SN - 00119407 AB - Details the space-vehicle battery designed Chuck Donet of the United States Air Force Laboratory. Components of the battery; Electricity produced by the battery. KW - ELECTRIC batteries KW - DESIGN KW - UNITED States. Air Force N1 - Accession Number: 855331; Donet, Chuck 1; Affiliation: 1: Air Force Research Laboratory, Space Vehicles Directorate, 3550 Aberdeen Ave. S.E., Kirtland AFB, NM 87117-5776; (505) 846-4899.; Source Info: 6/22/98, Vol. 54 Issue 12, p76; Subject Term: ELECTRIC batteries; Subject Term: DESIGN; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 335910 Battery manufacturing; NAICS/Industry Codes: 418990 All other merchant wholesalers; NAICS/Industry Codes: 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; NAICS/Industry Codes: 928110 National Security; Number of Pages: 3/5p; Illustrations: 1 Diagram; Document Type: Article; Full Text Word Count: 143 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=855331&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Shute, Valerie J. AU - Gawlick, Lisa A. AU - Gluck, Kevin A. AU - Shute, V J AU - Gawlick, L A AU - Gluck, K A T1 - Effects of practice and learner control on short- and long-term gain and efficiency. JO - Human Factors JF - Human Factors Y1 - 1998/06// VL - 40 IS - 2 M3 - journal article SP - 296 EP - 310 SN - 00187208 AB - This study investigated the effects of practice opportunities and learner control on short- and long-term learning from a computer-based introductory statistics curriculum. In all, 380 participants were assigned to one of five conditions. The first four conditions differed in terms of the number of problems to solve per problem set. The fifth condition allowed learners to choose the amount of practice. A subset (n = 120) of the original participants returned for testing following a six-month interval. Overall, the fixed-practice conditions showed learning gains that varied in relation to the amount of practice (i.e., more was better). The data from the learner-control condition was unexpected, showing learning gains comparable with the most extended practice condition yet the fastest tutor-completion times. We discuss implications of these findings in relation to the design of efficacious instruction. Actual or potential applications of this research include the modification of computer-based instruction that can enhance individuals' learning efficiency and outcome scores. [ABSTRACT FROM AUTHOR] AB - Copyright of Human Factors is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LEARNING KW - Education and Work Preparation KW - STATISTICS INSTRUCTION N1 - Accession Number: 996791; Shute, Valerie J. Gawlick, Lisa A. Gluck, Kevin A. Shute, V J 1 Gawlick, L A Gluck, K A; Affiliation: 1: U.S. Air Force Research Laboratory, Brooks Air Force Base, Texas 78236-5507, USA; Source Info: Jun1998, Vol. 40 Issue 2, p296; Subject Term: LEARNING; Author-Supplied Keyword: Education and Work Preparation; Author-Supplied Keyword: STATISTICS INSTRUCTION; Number of Pages: 15p; Illustrations: 2 Charts, 7 Graphs; Document Type: journal article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=996791&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wakin, Malham M. T1 - All That We Can Be: Black Leadership and Racial Integration The Army Way. JO - Society JF - Society Y1 - 1998/05//May/Jun98 VL - 35 IS - 4 M3 - Book Review SP - 87 EP - 87 PB - Springer Science & Business Media B.V. SN - 01472011 AB - Reviews the book "All That We Can Be: Black Leadership and Racial Integration the Army Way," by Charles C. Moskos and John Sibley Butler. KW - LEADERSHIP KW - NONFICTION KW - MOSKOS, Charles C. KW - BUTLER, John Sibley KW - ALL That We Can Be: Black Leadership & Racial Integration the Army Way (Book) N1 - Accession Number: 531367; Wakin, Malham M. 1; Affiliation: 1: William Lyon Professor of Professional Ethics, United States Air Force Academy; Source Info: May/Jun98, Vol. 35 Issue 4, p87; Subject Term: LEADERSHIP; Subject Term: NONFICTION; Reviews & Products: ALL That We Can Be: Black Leadership & Racial Integration the Army Way (Book); People: MOSKOS, Charles C.; People: BUTLER, John Sibley; Number of Pages: 1p; Document Type: Book Review; Full Text Word Count: 877 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=531367&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Daley, James G. AU - Bostock, Deborah J. T1 - A World View Model of Health Care Utilization: The Impact of Social and Provider Context on Health Care Decision-Making. JO - Journal of Health & Social Policy JF - Journal of Health & Social Policy Y1 - 1998/03// VL - 9 IS - 4 M3 - Article SP - 67 EP - 67 SN - 08977186 AB - This article provides a conceptual model illustrating the filtering effect that social factors have on a health care event. Individual, family and social network filters translate the symptom for the patient before and after s/he enters the health care delivery system. Simultaneously, managed care and provider filters shape what resource is provided by the health care provider to the patient. Basic premises are that decision-making about health care utilization is a complex social interaction and that better attention to the social context will increase the likelihood of effective health care occurring. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Health & Social Policy is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MEDICAL care KW - HEALTH facilities -- Utilization KW - SOCIAL factors KW - SOCIAL networks KW - FAMILIES KW - DECISION making KW - MANAGED care plans (Medical care) KW - SOCIAL interaction N1 - Accession Number: 730996; Daley, James G. 1 Bostock, Deborah J. 2; Affiliation: 1: Assistant Professor, School of Social Work, Southwest Missouri State University, Springfield, MO 65804 2: Family Practice Residency Program, United States Air Force Medical Center, Travis Air Force Base, CA 94535; Source Info: 1998, Vol. 9 Issue 4, p67; Subject Term: MEDICAL care; Subject Term: HEALTH facilities -- Utilization; Subject Term: SOCIAL factors; Subject Term: SOCIAL networks; Subject Term: FAMILIES; Subject Term: DECISION making; Subject Term: MANAGED care plans (Medical care); Subject Term: SOCIAL interaction; NAICS/Industry Codes: 624190 Other Individual and Family Services; Number of Pages: 16p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=730996&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Dominguez, Cynthia O. AU - Scherer, Robert F. T1 - Dimensionality of the Job-Related Tension Index: Factor Stability Between Two Samples of Women in the U.S. Public Sector. JO - Journal of Social Psychology JF - Journal of Social Psychology Y1 - 1998/02// VL - 138 IS - 1 M3 - Article SP - 139 EP - 142 PB - Taylor & Francis Ltd SN - 00224545 AB - The article focuses on the development of the Job-Related Index (JRTI) by R.L. Kahn, and coauthors over 30 years ago. Details on the use of the instrument to study organizational stress on individuals in a various work settings in the United States are presented. Indepth look at the stability of the JRTI and determination of the dimensionally of the JRTI specifically for women is presented. This past research demonstrates the stability of the JRTI for use with a broad range of organizational participants. Yet there is growing interest in how stress is perceived by and how it affects different groups in organizations. For example, G.N. Powell noted that the number of women in the work force has increased dramatically in the last decade, but many studies on organizational stress have not included women. Although more recent research on organizational stress has included women, only R.E. Rogers and colleagues sought to determine the dimensionality of the JRTI specifically for women, leaving the question of stability of dimensions among samples of women unanswered. KW - JOB stress KW - INTEREST (Psychology) KW - LABOR supply KW - DIMENSIONS KW - GREAT Britain KW - UNITED States N1 - Accession Number: 368602; Dominguez, Cynthia O. 1 Scherer, Robert F. 2; Affiliation: 1: United States Air Force, Wright-Patterson, AFB 2: College of Business and Administration, Wright State University; Source Info: Feb1998, Vol. 138 Issue 1, p139; Subject Term: JOB stress; Subject Term: INTEREST (Psychology); Subject Term: LABOR supply; Subject Term: DIMENSIONS; Subject Term: GREAT Britain; Subject Term: UNITED States; NAICS/Industry Codes: 561320 Temporary Help Services; Number of Pages: 4p; Document Type: Article; Full Text Word Count: 1367 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=368602&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Grier, Samuel L. AU - Bryant, Larry W. T1 - The Case for Desktops. JO - Communications of the ACM JF - Communications of the ACM Y1 - 1998/01// VL - 41 IS - 1 M3 - Article SP - 70 EP - 71 SN - 00010782 AB - In the article, authors say that on campuses where all students are expected to have and use computers, laptops appear to be the popular choice. Students themselves seem to prefer laptops. The portability of laptops allows students to take them to classes, libraries, and on trips. It is argued that their ubiquity makes computer-enhanced classroom instruction possible, decreases the need for laboratories, and consequently lowers the institution's computer budget. It is often argued that issuing a portable computer to each student would be more economical to the academy since there would no longer be a need for computer laboratories. Desktop computers are easily upgraded, but laptops are either very expensive to upgrade or impossible to modify. In summary, a desktop computer currently provides more bang for the buck than a laptop. Not only can the student purchase technically superior machine that stands a greater chance of remaining functional all four years, but the desktop is cheaper to maintain, more reliable, and easier to upgrade. KW - COMPUTERS & college students KW - LAPTOP computers KW - COMPUTERS KW - COST effectiveness KW - COMPUTER assisted instruction KW - UNIVERSITIES & colleges N1 - Accession Number: 11863124; Grier, Samuel L. 1; Email Address: griersl.dfcs@usafa.af.mil Bryant, Larry W. 2; Email Address: bryantlw.df@usafa.af.mil; Affiliation: 1: Professor and Head of the Computer Science Department, Department of United States Air Force Academy, Colorado Springs, CO. 2: Director, Academic Computing, United States Air Force Academy Colorado Springs, CO.; Source Info: Jan1998, Vol. 41 Issue 1, p70; Subject Term: COMPUTERS & college students; Subject Term: LAPTOP computers; Subject Term: COMPUTERS; Subject Term: COST effectiveness; Subject Term: COMPUTER assisted instruction; Subject Term: UNIVERSITIES & colleges; NAICS/Industry Codes: 334110 Computer and peripheral equipment manufacturing; NAICS/Industry Codes: 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers; NAICS/Industry Codes: 443144 Computer and software stores; NAICS/Industry Codes: 443142 Electronics Stores; NAICS/Industry Codes: 417310 Computer, computer peripheral and pre-packaged software merchant wholesalers; NAICS/Industry Codes: 334111 Electronic Computer Manufacturing; NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; Number of Pages: 2p; Document Type: Article L3 - 10.1145/268092.268120 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11863124&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Smith, Leslie B. AU - Bhattacharya, Amit AU - Lemasters, Grace AU - Succop, Paul AU - Puhala II, Edward AU - Medvedovic, Mario AU - Joyce, John T1 - Effect of Chronic Low-Level Exposure to Jet Fuel on Postural Balance of US Air Force Personnel. JO - Journal of Occupational Medicine JF - Journal of Occupational Medicine Y1 - 1997/07// M3 - Article SP - 623 EP - 632 SN - 00961736 AB - This study used the postural stability technique to investigate the neurological effects of cumulative low-level exposure to raw JP-8 jet fuel vapor on aircraft maintenance personnel. All subjects performed two sets of four 30-second postural sway tests. The results of mean cumulative exposure levels (in parts per million ± standard error of mean) were the following: naphthas, 1308 ± 292; benzene, 21.2 ± 5.7; toluene, 23.8 ± 6.1; and m-,o-, p-xylene, 22.7 ± 5.4. Covariate adjusted regression analysis of the exposed group data showed a statistically significant association (P > 0.05) between the solvents (benzene, toluene, and xylene) and increased postural sway response. For all solvent exposures, the "eyes closed, on foam" test provided the strongest association between sway length and JP-8 benzene (r2 range, 0.45 to 0. 52), implying subtle influence on vestibular/proprioception functionalities. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Occupational Medicine is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) N1 - Accession Number: 113379259; Smith, Leslie B. 1 Bhattacharya, Amit 1 Lemasters, Grace 1 Succop, Paul 1 Puhala II, Edward 1 Medvedovic, Mario 1 Joyce, John 1; Affiliation: 1: From the United States Air Force Armstrong Laboratory, Brooks AFB, Tex. (Mr Smith); the Department of Environmental Health, University of Cincinnati, Cincinnati, Ohio (Dr Bhattacharya, Dr Lemasters, Dr Succop, Mr Puhala, Mr Medvedovic); and the United States Air Force Medical Center/Surgeon General Bioenvironmental Engineer, Wright-Patterson AFB, Ohio (Mr Joyce).; Source Info: Jul1997, p623; Number of Pages: 10p; Document Type: Article; Full Text Word Count: 6261 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=113379259&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Godshall, Franklin J. AU - Elliott, Timothy R. T1 - Behavioral Correlates of Self-Appraised Problem-Solving Ability: Problem-Solving Skills and Health-Compromising Behaviors. JO - Journal of Applied Social Psychology JF - Journal of Applied Social Psychology Y1 - 1997/06//6/1/97 VL - 27 IS - 11 M3 - Article SP - 929 EP - 944 SN - 00219029 AB - According to the revised social problem-solving model, problem solving skills should be associated with cognitive and behavioral attempts to solve or prevent personal problems. We reasoned that the Approach-Avoidance scale on the Problem-Solving Inventory (PSI; Heppner, 1988) measures problem-solving skills as defined in the model, and predicted that scores on this factor would be predictive of health-compromising behaviors among 96 undergraduate students. An aspect of the problem-orientation component would be predictive of global health perceptions. Ineffective problem-solving skills were associated with greater alcohol intake over a 2-week period, and with more sedentary leisure behavior on retrospective and prospective measures. Perceived control over emotions was predictive of health perceptions, as hypothesized. However, elements of problem solving were unrelated to tobacco use, illicit drug use, and exercise behaviors. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Applied Social Psychology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PROBLEM solving KW - DECISION making KW - DRINKING of alcoholic beverages KW - DRUG abuse KW - HEALTH KW - PSYCHOLOGY N1 - Accession Number: 26902856; Godshall, Franklin J. 1 Elliott, Timothy R. 2; Affiliation: 1: United States Air Force, Aviano Air Base, Aviano, Italy 2: Department of Physical Medicine and Rehabilitation, University of Alabama-Birmingham; Source Info: 6/1/97, Vol. 27 Issue 11, p929; Subject Term: PROBLEM solving; Subject Term: DECISION making; Subject Term: DRINKING of alcoholic beverages; Subject Term: DRUG abuse; Subject Term: HEALTH; Subject Term: PSYCHOLOGY; NAICS/Industry Codes: 722410 Drinking Places (Alcoholic Beverages); Number of Pages: 16p; Illustrations: 2 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=26902856&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Diekmann, Kristina A. AU - Ross, Lee AU - Samuels, Steven M. AU - Bazerman, Max H. T1 - Self-Interest and Fairness in Problems of Resource Allocation: Allocators Versus Recipients. JO - Journal of Personality & Social Psychology JF - Journal of Personality & Social Psychology Y1 - 1997/05// VL - 72 IS - 5 M3 - Article SP - 1061 EP - 1074 SN - 00223514 AB - Two studies explored the tension between self-interest and the equality norm in problems of resource allocation. Study 1 presented graduate business students with a hypothetical task requiring them to make a series of managerial decisions. On learning the outcome of those decisions, they were asked to divide a bonus pool between self and a rival manager (who had opted for very different decisions and achieved either the same results as self on 2 criteria or a better result on 1 criterion and a worse result on the other criterion). Study 2 required Stanford and San Jose State undergraduates to consider the division of a hypothetical scholarship fund between candidates from their 2 schools. Data from both studies contrasted the apparent evenhandedness and lack of self-interest manifested by allocators with the self-serving responses of evaluators. Furthermore, when faced with different claims, participants were inclined to justify an unequal allocation of resources--provided that they, or a representative of their group, received the larger share--that few personally would have recommended, demanded, or imposed. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Personality & Social Psychology is the property of American Psychological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SELF-interest KW - EQUALITY KW - SOCIAL norms KW - BUSINESS students KW - DECISION making KW - MANAGEMENT KW - COLLEGE students N1 - Accession Number: 9712076214; Diekmann, Kristina A. 1; Email Address: kdiekman@vma.cc.nd.edu Ross, Lee 2 Samuels, Steven M. 3; Email Address: samuelss.dfbl@usafa.af Bazerman, Max H. 4; Affiliation: 1: University of Notre Dame 2: Stanford University 3: United States Air Force Academy 4: Northwestern University; Source Info: May97, Vol. 72 Issue 5, p1061; Subject Term: SELF-interest; Subject Term: EQUALITY; Subject Term: SOCIAL norms; Subject Term: BUSINESS students; Subject Term: DECISION making; Subject Term: MANAGEMENT; Subject Term: COLLEGE students; Number of Pages: 14p; Illustrations: 8 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9712076214&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wakin, Malham M. T1 - The Holocaust and Strategic Bombing: Genocide and Total War in the 20th Century. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 1996///Winter96 VL - 23 IS - 2 M3 - Book Review SP - 299 EP - 301 PB - Sage Publications Inc. SN - 0095327X AB - The article reviews the book "The Holocaust and Strategic Bombing: Genocide and Total War in the 20th Century," by Eric Markusen and David Kopf. KW - GENOCIDE KW - NONFICTION KW - MARKUSEN, Eric KW - KOPF, David KW - HOLOCAUST & Strategic Bombing: Genocide & Total War in the 20th Century, The (Book) N1 - Accession Number: 9703212818; Wakin, Malham M. 1; Affiliation: 1: Department of Philosophy and Fine Arts United States Air Force Academy; Source Info: Winter96, Vol. 23 Issue 2, p299; Subject Term: GENOCIDE; Subject Term: NONFICTION; Reviews & Products: HOLOCAUST & Strategic Bombing: Genocide & Total War in the 20th Century, The (Book); People: MARKUSEN, Eric; People: KOPF, David; Number of Pages: 3p; Document Type: Book Review; Full Text Word Count: 1022 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9703212818&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Simon, James J. T1 - THE ROLE OF THE ADMINISTRATIVE COUNCIL OF MOUNT LEBANON IN THE CREATION OF GREATER LEBANON: 1918 -- 1920. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 1996///Fall96 VL - 13 IS - 2 M3 - Article SP - 119 EP - 171 SN - 87553449 AB - This article discusses the role of the Administrative Council of Mount Lebanon (majlis) in the creation of greater Lebanon during the period of 1918-1920. From 1918 to 1920, the majlis reconvened after being disbanded by the Ottomans during the war; drafted several landmark resolutions that proposed a Greater Lebanon; and dispatched three Lebanese delegations to the Paris Peace Conference to persuade the Great Powers to recognize the historical role of the majlis in Lebanese affairs. This study tells the story of the creation of Lebanon by tracing the words and actions of the majlis. As of 1996, with the benefit of over seventy years of hindsight, and in the midst of uncertainty over the sovereignty of Lebanon, some might see the seeds of recent sectarian conflict as having been sown by the two themes which the majlis was known to champion: confessional representation and an independent Greater Lebanon. KW - ADMINISTRATIVE economic councils KW - HISTORY KW - SOVEREIGNTY (Political science) KW - INTERNATIONAL relations KW - LEBANON KW - LEBANON, Mount (Lebanon) N1 - Accession Number: 9708292495; Simon, James J. 1; Affiliation: 1: Captain, United States Air Force, Department of History, USAF Academy, Colorado Springs, CO 80840-5000; Source Info: Fall96, Vol. 13 Issue 2, p119; Subject Term: ADMINISTRATIVE economic councils; Subject Term: HISTORY; Subject Term: SOVEREIGNTY (Political science); Subject Term: INTERNATIONAL relations; Subject Term: LEBANON; Subject Term: LEBANON, Mount (Lebanon); NAICS/Industry Codes: 928120 International Affairs; NAICS/Industry Codes: 911410 Foreign affairs; Number of Pages: 53p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9708292495&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abadi, Jacob T1 - Central America and the Middle East: The Internationalization of the Crises. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 1996///Spring96 VL - 13 IS - 1 M3 - Book Review SP - 347 EP - 350 SN - 87553449 AB - Reviews the book "Central America and the Middle East: The Internationalization of the Crises," edited by Damian J. Fernandez. KW - INTERNATIONAL relations KW - NONFICTION KW - FERNANDEZ, Damian J. KW - CENTRAL America & the Middle East: The Internationalization of the Crises (Book) N1 - Accession Number: 9708020971; Abadi, Jacob 1; Affiliation: 1: The United States Air Force Academy; Source Info: Spring96, Vol. 13 Issue 1, p347; Subject Term: INTERNATIONAL relations; Subject Term: NONFICTION; Reviews & Products: CENTRAL America & the Middle East: The Internationalization of the Crises (Book); NAICS/Industry Codes: 928120 International Affairs; NAICS/Industry Codes: 911410 Foreign affairs; People: FERNANDEZ, Damian J.; Number of Pages: 4p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9708020971&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abadi, Jacob T1 - The Military History of the Third World Since 1945: A Reference Guide. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 1996///Spring96 VL - 13 IS - 1 M3 - Book Review SP - 417 EP - 418 SN - 87553449 AB - Reviews the book "The Military History of the Third World Since 1945: A Reference Guide," by Claude C. Sturgill. KW - MILITARY history KW - NONFICTION KW - STURGILL, Claude C. KW - MILITARY History of the Third World Since 1945: A Reference Guide, The (Book) N1 - Accession Number: 9708021014; Abadi, Jacob 1; Affiliation: 1: United States Air Force Academy; Source Info: Spring96, Vol. 13 Issue 1, p417; Subject Term: MILITARY history; Subject Term: NONFICTION; Reviews & Products: MILITARY History of the Third World Since 1945: A Reference Guide, The (Book); People: STURGILL, Claude C.; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9708021014&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Nelson, John J. AU - Chang, C. L. T1 - A MASS CONSERVATIVE LEAST-SQUARES FINITE ELEMENT METHOD FOR THE STOKES PROBLEM. JO - Communications in Numerical Methods in Engineering JF - Communications in Numerical Methods in Engineering Y1 - 1995/12// VL - 11 IS - 12 M3 - Article SP - 965 EP - 970 SN - 10698299 AB - In the paper the simulation of incompressible flow in 2D by the least-squares finite element method (LSFEM) in the velocity -- vorticity -- pressure version is studied. A problem with this method is that it does not conserve mass exactly, i.e. div uh ≠ 0 exactly. In the paper a modified LSFEM is developed which enforces a near zero residual of mass conservation, i.e. div u is nearly zero at every point of the discretization. This is accomplished by adding an extra restriction in the divergence free equation through the Lagrange multiplier strategy. [ABSTRACT FROM AUTHOR] AB - Copyright of Communications in Numerical Methods in Engineering is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - FINITE element method KW - NUMERICAL analysis KW - LEAST squares KW - MATHEMATICAL statistics KW - STOKES equations KW - LAGRANGE problem KW - incompressible flow KW - least-square finite element KW - mass conservation KW - Stokes problem N1 - Accession Number: 12753475; Nelson, John J. 1 Chang, C. L. 2; Affiliation: 1: United States Air Force Wright Laboratories, Wright-Patterson Air Force Base, OH 45433-7913, U.S.A. 2: Department of Mathematics, Cleveland State University, Cleveland, OH 44115, U.S.A.; Source Info: Dec95, Vol. 11 Issue 12, p965; Subject Term: FINITE element method; Subject Term: NUMERICAL analysis; Subject Term: LEAST squares; Subject Term: MATHEMATICAL statistics; Subject Term: STOKES equations; Subject Term: LAGRANGE problem; Author-Supplied Keyword: incompressible flow; Author-Supplied Keyword: least-square finite element; Author-Supplied Keyword: mass conservation; Author-Supplied Keyword: Stokes problem; Number of Pages: 6p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12753475&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abadi, Jacob T1 - The Palestine Conflict in the History of Modern Iraq: The Dynamics of Involvement, 1928-1948. JO - Millennium (03058298) JF - Millennium (03058298) Y1 - 1995/12// VL - 24 IS - 3 M3 - Book Review SP - 613 EP - 614 SN - 03058298 AB - The article reviews the book "The Palestine Conflict in the History of Modern Iraq: The Dynamics of Involvement, 1928-1948," by Michael Eppel. KW - HISTORY KW - NONFICTION KW - IRAQ KW - EPPEL, Michael KW - PALESTINE Conflict in the History of Modern Iraq: The Dynamics of Involvement 1928-1948, The (Book) N1 - Accession Number: 27671253; Abadi, Jacob 1; Affiliation: 1: Assistant Professor of Middle Eastern History, Department of History, United States Air Force Academy; Source Info: 1995, Vol. 24 Issue 3, p613; Subject Term: HISTORY; Subject Term: NONFICTION; Subject Term: IRAQ; Reviews & Products: PALESTINE Conflict in the History of Modern Iraq: The Dynamics of Involvement 1928-1948, The (Book); People: EPPEL, Michael; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=27671253&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Szczepaniak, Tracy R. T1 - The United Nations, Iran, and Iraq: How Peacemaking Changed. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 1995///Fall95 VL - 12 IS - 2 M3 - Book Review SP - 514 EP - 517 SN - 87553449 AB - Reviews the book "The United Nations, Iran, and Iraq: How Peacemaking Changed," by Cameron R. Hume. KW - RECONCILIATION KW - NONFICTION KW - HUME, Cameron R. KW - UNITED Nations, Iran & Iraq: How Peacemaking Changed, The (Book) N1 - Accession Number: 9708142771; Szczepaniak, Tracy R. 1; Affiliation: 1: United States Air Force Academy; Source Info: Fall95, Vol. 12 Issue 2, p514; Subject Term: RECONCILIATION; Subject Term: NONFICTION; Reviews & Products: UNITED Nations, Iran & Iraq: How Peacemaking Changed, The (Book); People: HUME, Cameron R.; Number of Pages: 4p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9708142771&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abadi, Jacob T1 - Peacekeeping and the Challenge of Civil Conflict Resolution. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 1995///Fall95 VL - 12 IS - 2 M3 - Book Review SP - 517 EP - 522 SN - 87553449 AB - Reviews the book "Peacekeeping and the Challenge of Civil Conflict Resolution," edited by David A. Charters. KW - CONFLICT management KW - NONFICTION KW - CHARTERS, David A. KW - PEACEKEEPING & the Challenge of Civil Conflict Resolution (Book) N1 - Accession Number: 9708142773; Abadi, Jacob 1; Affiliation: 1: United States Air Force Academy; Source Info: Fall95, Vol. 12 Issue 2, p517; Subject Term: CONFLICT management; Subject Term: NONFICTION; Reviews & Products: PEACEKEEPING & the Challenge of Civil Conflict Resolution (Book); People: CHARTERS, David A.; Number of Pages: 6p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9708142773&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abadi, Jacob T1 - The Twilight of British Ascendancy in the Middle East: A Case Study of Iraq, 1941-1950. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 1995///Fall95 VL - 12 IS - 2 M3 - Book Review SP - 522 EP - 524 SN - 87553449 AB - Reviews the book "The Twilight of British Ascendancy in the Middle East: A Case Study of Iraq, 1941-1950," by Daniel Silverfarb. KW - INTERNATIONAL relations KW - NONFICTION KW - SILVERFARB, Daniel KW - TWILIGHT of British Ascendancy in the Middle East: A Case Study of Iraq 1941-1950, The (Book) N1 - Accession Number: 9708142775; Abadi, Jacob 1; Affiliation: 1: The United States Air Force Academy; Source Info: Fall95, Vol. 12 Issue 2, p522; Subject Term: INTERNATIONAL relations; Subject Term: NONFICTION; Reviews & Products: TWILIGHT of British Ascendancy in the Middle East: A Case Study of Iraq 1941-1950, The (Book); NAICS/Industry Codes: 911410 Foreign affairs; NAICS/Industry Codes: 928120 International Affairs; People: SILVERFARB, Daniel; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9708142775&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Abadi, Jacob T1 - The Modern History of Jordan. JO - Journal of Third World Studies JF - Journal of Third World Studies Y1 - 1995///Fall95 VL - 12 IS - 2 M3 - Book Review SP - 532 EP - 534 SN - 87553449 AB - Reviews the book "The Modern History of Jordan," by Kamal Salibi. KW - MODERN history KW - NONFICTION KW - SALIBI, Kamal KW - MODERN History of Jordan, The (Book) N1 - Accession Number: 9708142783; Abadi, Jacob 1; Affiliation: 1: United States Air Force Academy; Source Info: Fall95, Vol. 12 Issue 2, p532; Subject Term: MODERN history; Subject Term: NONFICTION; Reviews & Products: MODERN History of Jordan, The (Book); People: SALIBI, Kamal; Number of Pages: 3p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9708142783&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Wakin, Malham M. T1 - The New Conscientious Objection: From Sacred to Secular Resistance. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 1994///Fall94 VL - 21 IS - 1 M3 - Book Review SP - 153 EP - 155 PB - Sage Publications Inc. SN - 0095327X AB - The article reviews the book "The New Conscientious Objection: From Sacred to Secular Resistance," edited by Charles C. Moskos and John W. Chambers II. KW - MILITARY ethics KW - NONFICTION KW - CHAMBERS, John W. KW - MOSKOS, Charles C. KW - NEW Conscientious Objection: From Sacred to Secular Resistance, The (Book) N1 - Accession Number: 9412070025; Wakin, Malham M. 1; Affiliation: 1: Department of Philosophy & Fine Arts United States Air Force Academy; Source Info: Fall94, Vol. 21 Issue 1, p153; Subject Term: MILITARY ethics; Subject Term: NONFICTION; Reviews & Products: NEW Conscientious Objection: From Sacred to Secular Resistance, The (Book); People: CHAMBERS, John W.; People: MOSKOS, Charles C.; Number of Pages: 3p; Document Type: Book Review; Full Text Word Count: 655 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9412070025&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Meredith, James H. T1 - The Rapido River and Hürtgen Forest in "Across the River and into the Trees." JO - Hemingway Review JF - Hemingway Review Y1 - 1994///Fall94 VL - 14 IS - 1 M3 - Literary Criticism SP - 60 EP - 66 SN - 02763362 AB - Disputes negative criticism on Ernest Hemingway's "Across the River and into the Trees." Need for discussing the novel's historical context; Analysis of Colonel Cantwell's personal tragedy; Psychological demonstrations of textual roles. KW - CRITICISM KW - BOOKS KW - HEMINGWAY, Ernest, 1899-1961 KW - ACROSS the River & Into the Trees (Book) N1 - Accession Number: 9502034369; Meredith, James H. 1; Affiliation: 1: United States Air Force Academy; Source Info: Fall94, Vol. 14 Issue 1, p60; Subject Term: CRITICISM; Subject Term: BOOKS; Reviews & Products: ACROSS the River & Into the Trees (Book); NAICS/Industry Codes: 414420 Book, periodical and newspaper merchant wholesalers; NAICS/Industry Codes: 451310 Book stores and news dealers; NAICS/Industry Codes: 451211 Book Stores; NAICS/Industry Codes: 424920 Book, Periodical, and Newspaper Merchant Wholesalers; People: HEMINGWAY, Ernest, 1899-1961; Number of Pages: 7p; Document Type: Literary Criticism; Full Text Word Count: 2719 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9502034369&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Lamb, Theodore A. T1 - A Walk on the Applied Side: Sociology and Training Research. JO - American Sociologist JF - American Sociologist Y1 - 1993///Fall/Winter93 VL - 24 IS - 3/4 M3 - Article SP - 26 EP - 36 SN - 00031232 AB - This article presents a topic that sociologists rarely research but which holds great promise for the future — training. Sociologists spend a good deal of time investigating education but generally neglect the field of training. Little effort is spent on investigating training, why it's done, how it's done, what effect it has, who gets it, when it's appropriate, or where it takes place. Sociologists tend to leave these issues to psychologists of various specialties or to professional trainers and training developers. The article identifies some major training-related issues, sociological specialty areas that apply to training-related research, areas of research that are of likely interest to sociologists and what sociologists might do to get involved in training research. [ABSTRACT FROM AUTHOR] AB - Copyright of American Sociologist is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - OCCUPATIONAL training KW - SOCIOLOGY KW - SOCIAL scientists KW - SOCIAL sciences KW - SOCIOLOGISTS KW - PSYCHOLOGISTS KW - CAREER education KW - BEHAVIORAL scientists KW - EDUCATION N1 - Accession Number: 9411290334; Lamb, Theodore A. 1; Affiliation: 1: Visiting Professor, United States Air Force Academy, Department of Behavioral Science and Leadership, USAF Academy, CO 80840; Source Info: Fall/Winter93, Vol. 24 Issue 3/4, p26; Subject Term: OCCUPATIONAL training; Subject Term: SOCIOLOGY; Subject Term: SOCIAL scientists; Subject Term: SOCIAL sciences; Subject Term: SOCIOLOGISTS; Subject Term: PSYCHOLOGISTS; Subject Term: CAREER education; Subject Term: BEHAVIORAL scientists; Subject Term: EDUCATION; NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; NAICS/Industry Codes: 624310 Vocational Rehabilitation Services; NAICS/Industry Codes: 611699 All Other Miscellaneous Schools and Instruction; NAICS/Industry Codes: 923110 Administration of Education Programs; NAICS/Industry Codes: 611710 Educational Support Services; NAICS/Industry Codes: 541720 Research and Development in the Social Sciences and Humanities; Number of Pages: 11p; Document Type: Article; Full Text Word Count: 4888 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9411290334&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Mollerstrom, Willard W. AU - Patchner, Michael A. AU - Milner, Joel S. T1 - Family functioning and child abuse potential. JO - Journal of Clinical Psychology JF - Journal of Clinical Psychology Y1 - 1992/07// VL - 48 IS - 4 M3 - Article SP - 445 EP - 454 PB - John Wiley & Sons, Inc. SN - 00219762 AB - Family conflict and the lack of family cohesion are believed to set a foundation for coercive interactions that increase the likelihood of child abuse. The present study investigated the relationship between the family social environment (Family Environment Scale and Index of Marital Satisfaction) and physical child abuse potential (Child Abuse Potential Inventory) in maltreating (n = 376) and comparison (n = 1.48) parents. As expected, the strongest positive relationship was between family conflict and abuse potential. The strongest inverse relationships were between family cohesion, family expressiveness, marital satisfaction, and abuse scores, which indicates that the lack of positive interactional patterns is related to abuse potential. However, regression analysis revealed that family interactional patterns did not account for the majority of variance in abuse potential. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Clinical Psychology is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - CHILD abuse KW - FAMILY research KW - LIFESTYLES KW - FAMILY conflict KW - FAMILY relations KW - REGRESSION analysis KW - Child Abuse, Neglect, and Intervention KW - CHILD CARE, PROBLEMS, AND TREATMENT N1 - Accession Number: 9302070303; Mollerstrom, Willard W. 1 Patchner, Michael A. 2 Milner, Joel S. 3; Affiliation: 1: United States Air Force 2: West Virginia University, Emerita 3: Northern Illinois University; Source Info: Jul1992, Vol. 48 Issue 4, p445; Subject Term: CHILD abuse; Subject Term: FAMILY research; Subject Term: LIFESTYLES; Subject Term: FAMILY conflict; Subject Term: FAMILY relations; Subject Term: REGRESSION analysis; Author-Supplied Keyword: Child Abuse, Neglect, and Intervention; Author-Supplied Keyword: CHILD CARE, PROBLEMS, AND TREATMENT; Number of Pages: 10p; Illustrations: 1 Chart; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9302070303&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Tupes, Ernest C. AU - Christal, Raymond E. T1 - Recurrent Personality Factors Based on Trait Ratings. JO - Journal of Personality JF - Journal of Personality Y1 - 1992/06// VL - 60 IS - 2 M3 - Article SP - 225 EP - 251 PB - Wiley-Blackwell SN - 00223506 AB - Intercorrelations among ratings on 35 personality traits, selected as representative of the personality domain, were obtained for eight samples. These samples differed in length of acquaintanceship from 3 days to more than a year; in kind of acquaintanceship from assessment programs in a military training course to a fraternity house situation; in type of subject from airmen with only a high-school education to male and female undergraduate students to first-year graduate students; and in type of rater from very naive persons to clinical psychologists and psychiatrists with years of experience in the evaluation of personality. Centroid or multiple-group factors were extracted and rotated orthogonally to simple structure. For one study, an independent solution was obtained in which analytic rotations were accomplished on an IBM 650 computer using Kaiser's normal varimax criterion. Five fairly strong and recurrent factors emerged from each analysis, labeled as (a) Surgency, (b) Agreeableness, (c) Dependability, (d) Emotional Stability, and (e) Culture. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Personality is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PERSONALITY KW - PERSONALITY assessment KW - MILITARY education KW - AIRMEN KW - COLLEGE students KW - EMOTIONS (Psychology) KW - CULTURE N1 - Accession Number: 9208170746; Tupes, Ernest C. 1 Christal, Raymond E. 1; Affiliation: 1: United States Air Force; Source Info: Jun92, Vol. 60 Issue 2, p225; Subject Term: PERSONALITY; Subject Term: PERSONALITY assessment; Subject Term: MILITARY education; Subject Term: AIRMEN; Subject Term: COLLEGE students; Subject Term: EMOTIONS (Psychology); Subject Term: CULTURE; NAICS/Industry Codes: 928110 National Security; NAICS/Industry Codes: 611110 Elementary and Secondary Schools; NAICS/Industry Codes: 611310 Colleges, Universities, and Professional Schools; Number of Pages: 27p; Illustrations: 6 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9208170746&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roth, R. Theodore T1 - The Impact of Decreased Defense Spending on Employment in the United States. JO - Armed Forces & Society (0095327X) JF - Armed Forces & Society (0095327X) Y1 - 1992///Spring92 VL - 18 IS - 3 M3 - Article SP - 383 EP - 405 PB - Sage Publications Inc. SN - 0095327X AB - The combined pressures of reduced East-West tensions and large budget deficits in the United States have led to the enactment of reduced defense budgets. Future reductions in spending could be 25 percent less in real terms from FY 1990 levels. These decreases will affect employment of active-duty military personnel, DoD civilians, and workers in private sector defense industries. If the reductions in force structure take place at a controlled rate, the necessary cuts among active-duty forces and DoD civilians should be manageable through attrition and reduced accessions. The backlog of authorizations and foreign sales will slow any industrial downturn in the defense sector. The rate and magnitude of the defense spending decreases are smaller than in previous postwar cutbacks, and much of the decrease has already taken place since the peak of authorizations in FY 1985. Although certain individuals will be affected by reductions in defense spending, the overall impact upon the economy will be similar to other structural unemployment. Current job training and economic recovery legislation is sufficient to handle this decrease in spending and the transfer of individuals to the private sector. This analysis concludes that these cutbacks will not significantly affect the macroeconomy of the United States, although certain localities, occupations, and industries may encounter short-term difficulties. [ABSTRACT FROM AUTHOR] AB - Copyright of Armed Forces & Society (0095327X) is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ARMED Forces -- Appropriations & expenditures KW - MILITARY spending KW - EMPLOYMENT (Economic theory) KW - BUDGET deficits KW - UNITED States N1 - Accession Number: 9208100005; Roth, R. Theodore 1; Affiliation: 1: Tenure associate professor of economics and director of research, Department of Economics and Geography, United States Air Force Academy; Source Info: Spring92, Vol. 18 Issue 3, p383; Subject Term: ARMED Forces -- Appropriations & expenditures; Subject Term: MILITARY spending; Subject Term: EMPLOYMENT (Economic theory); Subject Term: BUDGET deficits; Subject Term: UNITED States; Number of Pages: 23p; Illustrations: 4 Charts; Document Type: Article; Full Text Word Count: 9315 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9208100005&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Robinette, Randy L. T1 - THE RELATIONSHIP BETWEEN THE MARLOWE -CROWNE FORM C AND THE VALIDITY SCALES OF THE MMPI. JO - Journal of Clinical Psychology JF - Journal of Clinical Psychology Y1 - 1991/05// VL - 47 IS - 3 M3 - Article SP - 396 EP - 399 PB - John Wiley & Sons, Inc. SN - 00219762 AB - The study examined the construct-related validity of a 13-item short form of the Marlowe-Crowne Social Desirability Scale advanced by Reynolds (1982), using the validity scales of the MMPI. With a sample of 481 Basic Military Trainees, the short form of the Marlowe-Crowne replicated the correlations between the standard Marlowe-Crowne and the MMPI validity scales initially reported by Crowne and Marlowe (1960). The results further support the short form of the Marlow-Crowne Social Desirability Scale as an economical measure of social desirability. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Clinical Psychology is the property of John Wiley & Sons, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MINNESOTA Multiphasic Personality Inventory KW - TRUTHFULNESS & falsehood KW - SOCIAL desirability KW - SOCIAL psychology KW - PERSONALITY tests KW - CORRELATION (Statistics) N1 - Accession Number: 11991975; Robinette, Randy L. 1; Affiliation: 1: United States Air Force.; Source Info: May91, Vol. 47 Issue 3, p396; Subject Term: MINNESOTA Multiphasic Personality Inventory; Subject Term: TRUTHFULNESS & falsehood; Subject Term: SOCIAL desirability; Subject Term: SOCIAL psychology; Subject Term: PERSONALITY tests; Subject Term: CORRELATION (Statistics); Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11991975&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Strudevant, Rick W. T1 - President Washington's Indian War: The Struggle for the Old Northwest, 1790-1795. JO - American Indian Quarterly JF - American Indian Quarterly Y1 - 1990///Summer90 VL - 14 IS - 3 M3 - Book Review SP - 298 EP - 300 PB - University of Nebraska Press SN - 0095182X AB - Reviews the book "President Washington's Indian War: The Struggle for the Old Northwest, 1790-1795," by Wiley Sword. KW - INDIGENOUS peoples of the Americas -- Wars KW - NONFICTION KW - SWORD, Wiley KW - PRESIDENT Washington's Indian War: The Struggle for the Old Northwest 1790-1793 (Book) N1 - Accession Number: 9102110317; Strudevant, Rick W. 1; Affiliation: 1: United States Air Force History Program, Colorado Springs, Colorado; Source Info: Summer90, Vol. 14 Issue 3, p298; Subject Term: INDIGENOUS peoples of the Americas -- Wars; Subject Term: NONFICTION; Reviews & Products: PRESIDENT Washington's Indian War: The Struggle for the Old Northwest 1790-1793 (Book); People: SWORD, Wiley; Number of Pages: 3p; Document Type: Book Review; Full Text Word Count: 1088 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=9102110317&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Snowden, Lonnie R. AU - Schott, Tracy L. AU - Awalt, Suzanne J. AU - Gillis-Knox, Jo T1 - Marital Satisfaction in Pregnancy: Stability and Change. JO - Journal of Marriage & Family JF - Journal of Marriage & Family Y1 - 1988/05// VL - 50 IS - 2 M3 - Article SP - 325 EP - 333 SN - 00222445 AB - Marital satisfaction was studied in a sample of 106 women recruited at a military medical center and evaluated both early and late in pregnancy. An explanatory model was evaluated with regard to (a) sociodemographic factors; (b) coping resources (self-confidence, previous children, religious participation); and (c) pregnancy decision-making (wantedness, intendedness, and spousal disagreement). Two medical indicators, hospitalization and general health, were considered as potential consequences of marital dissatisfaction. Results indicated that with sociodemographic variables controlled, coping resources and pregnancy decision-making were related to marital satisfaction both early and late in the pregnancy. At the same time, marital satisfaction itself remained consistent, both for individuals and for the group. Insofar as marital satisfaction of individuals changed, it was associated with two experiences: (a) first time parenthood and (b) participation in religious activities. Marital satisfaction late in pregnancy was related to hospitalization and general perception of health such that declining marital satisfaction was linked to health status. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Marriage & Family is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - MARITAL satisfaction KW - MARITAL relations KW - PREGNANCY KW - PREGNANT women KW - PARENTHOOD KW - MARRIED women KW - PSYCHOLOGY N1 - Accession Number: 5272190; Snowden, Lonnie R. 1 Schott, Tracy L. 2 Awalt, Suzanne J. 3 Gillis-Knox, Jo 1; Affiliation: 1: University of California, Berkeley 2: Eastfield Children's Center 3: United States Air Force; Source Info: May88, Vol. 50 Issue 2, p325; Subject Term: MARITAL satisfaction; Subject Term: MARITAL relations; Subject Term: PREGNANCY; Subject Term: PREGNANT women; Subject Term: PARENTHOOD; Subject Term: MARRIED women; Subject Term: PSYCHOLOGY; Number of Pages: 9p; Illustrations: 3 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=5272190&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rallow, Joseph C. AU - MacDonald, H. Malcolm T1 - European Peace Movements and the Future of the Western Alliance. JO - Social Science Quarterly (University of Texas Press) JF - Social Science Quarterly (University of Texas Press) Y1 - 1986/12// VL - 67 IS - 4 M3 - Book Review SP - 907 EP - 908 PB - University of Texas Press SN - 00384941 AB - Reviews the book "European Peace Movements and the Future of the Western Alliance," edited by Walter Laqueur and Robert Hunter. KW - PEACE movements KW - NONFICTION KW - LAQUEUR, Walter, 1921- KW - HUNTER, Roberts Edwards KW - EUROPEAN Peace Movements & the Future of the Western Alliance (Book) N1 - Accession Number: 16545731; Rallow, Joseph C. 1 MacDonald, H. Malcolm; Affiliation: 1: United States Air Force Academy; Source Info: Dec1986, Vol. 67 Issue 4, p907; Subject Term: PEACE movements; Subject Term: NONFICTION; Reviews & Products: EUROPEAN Peace Movements & the Future of the Western Alliance (Book); People: LAQUEUR, Walter, 1921-; People: HUNTER, Roberts Edwards; Number of Pages: 2p; Document Type: Book Review UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=16545731&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - GEN AU - Tartasky, Donald J. AU - Katz, Rose K. AU - Marshall, Doris B. AU - Romanowski, Sonja B. AU - Stewart, Nyla F. AU - Monroe, Cheryl AU - Alcabes, Abraham T1 - Letters. JO - Social Work JF - Social Work Y1 - 1985/05//May/Jun85 VL - 30 IS - 3 M3 - Letter SP - 285 EP - 288 PB - Oxford University Press / USA SN - 00378046 AB - Presents letters to the editor. Role of the adoption process to achieving pregnancy; Determinants of clienthood in social service. KW - LETTERS to the editor KW - PREGNANCY KW - ADOPTION KW - SOCIAL services KW - CLIENT characteristics KW - MEDICAL care N1 - Accession Number: 5275469; Tartasky, Donald J. 1 Katz, Rose K. Marshall, Doris B. Romanowski, Sonja B. Stewart, Nyla F. Monroe, Cheryl 2 Alcabes, Abraham 3; Affiliation: 1: Biomedical Science Corps, United States Air Force, Doctoral Candidate, School of Social Work, Florida State University, Tallahassee. 2: Doctoral Candidate, School of Social Work, Rutgers University, new Brunswick, New Jersey. 3: School of Social Work, Columbia University, New York, New York.; Source Info: May/Jun85, Vol. 30 Issue 3, p285; Subject Term: LETTERS to the editor; Subject Term: PREGNANCY; Subject Term: ADOPTION; Subject Term: SOCIAL services; Subject Term: CLIENT characteristics; Subject Term: MEDICAL care; NAICS/Industry Codes: 624190 Other Individual and Family Services; Number of Pages: 4p; Document Type: Letter UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=5275469&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Rue, Robert C. AU - Rosenshine, Matthew T1 - The Application of Semi-Marvok Decision Processes to Queueing of Aircraft for Landing at an Airport. JO - Transportation Science JF - Transportation Science Y1 - 1985/05// VL - 19 IS - 2 M3 - Article SP - 154 PB - INFORMS: Institute for Operations Research SN - 00411655 AB - Socially optimal control of access to the landing queue of an airport is investigated in this paper. Semi-Markov decision proc- ess models, M/M/1 and M/Ek/1, for several classes of customers are used to determine how access should be controlled. Only commercial jet aircraft are considered and they are divided up into five classes based on aircraft type. Data from the Greater Pittsburgh International Airport are used to determine the parameters of the service time distribution. Data from several published sources are used to develop the cost, reward, and arrival rate parameters for each of the classes. Results are developed and presented for both models. [ABSTRACT FROM AUTHOR] AB - Copyright of Transportation Science is the property of INFORMS: Institute for Operations Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - LANDING of airplanes KW - DECISION making KW - MARKOV processes KW - COMMERCIAL aeronautics KW - INTERNATIONAL airports KW - AIRPORTS KW - LANDING aids (Aeronautics) N1 - Accession Number: 4474900; Rue, Robert C. 1 Rosenshine, Matthew 2; Affiliation: 1: United States Air Force Academy, Colorado Springs, Colorado. 2: Pennsylvania State University, University Park, Pennsylvania.; Source Info: May85, Vol. 19 Issue 2, p154; Subject Term: LANDING of airplanes; Subject Term: DECISION making; Subject Term: MARKOV processes; Subject Term: COMMERCIAL aeronautics; Subject Term: INTERNATIONAL airports; Subject Term: AIRPORTS; Subject Term: LANDING aids (Aeronautics); NAICS/Industry Codes: 481215 Non-scheduled specialty flying services; NAICS/Industry Codes: 481211 Nonscheduled Chartered Passenger Air Transportation; NAICS/Industry Codes: 481111 Scheduled Passenger Air Transportation; NAICS/Industry Codes: 481112 Scheduled Freight Air Transportation; NAICS/Industry Codes: 481110 Scheduled air transportation; NAICS/Industry Codes: 488119 Other Airport Operations; Number of Pages: 19p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=4474900&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gourdin, Kent N. T1 - International Aviation Policy and Strategic Airlift: A Critical Appraisal. JO - Transportation Journal (American Society of Transportation & Logistics Inc) JF - Transportation Journal (American Society of Transportation & Logistics Inc) Y1 - 1983///Winter1983 VL - 23 IS - 2 M3 - Article SP - 20 EP - 27 PB - American Society of Transportation & Logistics Inc SN - 00411612 N1 - Accession Number: 14268671; Gourdin, Kent N. 1; Affiliation: 1: Captain in the United States Air Force, Powell, Tennessee 37849.; Source Info: Winter1983, Vol. 23 Issue 2, p20; Number of Pages: 8p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=14268671&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Blouse, Louis E. AU - Lathrop, George D. AU - Duruy, Harstry J. AU - Ball, Robert J. T1 - Rubella Screening and Vaccination Program for US Air Force Trainees: An Analysis of Findings. JO - American Journal of Public Health JF - American Journal of Public Health Y1 - 1982/03// VL - 72 IS - 3 M3 - Article SP - 280 EP - 283 PB - American Public Health Association SN - 00900036 AB - A preventive medicine program of rubella control for trainees at the Air Force Military Training Center. Lackland AFB. Texas, was begun in October 1977. Incoming trainees were screened for rubella susceptibility, and female trainees were additionally screened for pregnancy. During the period October 1977 to December 1978, an overall rubella susceptibility rate of 17.3 per cent was determined for 71,387 trainees entering basic training. Flights (50 persons each) to which these trainees are assigned varied widely in susceptibility from 0.0-47.7 per cent. Comparisons of susceptibility rates for trainees for geographic areas and stales indicated the highest overall percentage of susceptibles were from the Pacific geographic area with California showing the highest susceptibility (24.5 per cent). Race specific susceptibility rates were found to differ significantly between Whites and Blacks. 17.6 vs 14.8 per cent, respectively. The immunization program was effective as judged by a dampening of the incidence of clinical rubella at the basic training center and at other secondary training centers. [ABSTRACT FROM AUTHOR] AB - Copyright of American Journal of Public Health is the property of American Public Health Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - RUBELLA -- Vaccination KW - RUBELLA virus KW - TOGAVIRUS infections KW - VIRAL vaccines KW - PUBLIC health KW - PREVENTIVE health services KW - VACCINATION KW - COMMUNICABLE diseases -- Prevention KW - UNITED States. Air Force N1 - Accession Number: 4949234; Blouse, Louis E. 1 Lathrop, George D. 1 Duruy, Harstry J. 1 Ball, Robert J. 1; Affiliation: 1: Epidemiology Division, United States Air Force School of Aerospace Medicine, Brooks Air Force Base, Texas; Source Info: Mar1982, Vol. 72 Issue 3, p280; Subject Term: RUBELLA -- Vaccination; Subject Term: RUBELLA virus; Subject Term: TOGAVIRUS infections; Subject Term: VIRAL vaccines; Subject Term: PUBLIC health; Subject Term: PREVENTIVE health services; Subject Term: VACCINATION; Subject Term: COMMUNICABLE diseases -- Prevention; Company/Entity: UNITED States. Air Force; NAICS/Industry Codes: 525120 Health and Welfare Funds; NAICS/Industry Codes: 928110 National Security; NAICS/Industry Codes: 923120 Administration of Public Health Programs; NAICS/Industry Codes: 325414 Biological Product (except Diagnostic) Manufacturing; Number of Pages: 4p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=4949234&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Bloom, Richard W. T1 - COMMENT ON "THE AUTHORITARIAN AS MEASURED BY A PERSONALITY SCALE: SOLID CITIZEN OR MISFIT?". JO - Journal of Clinical Psychology JF - Journal of Clinical Psychology Y1 - 1980/10// VL - 36 IS - 4 M3 - Article SP - 918 EP - 920 PB - John Wiley & Sons, Inc. SN - 00219762 AB - The article comments on the article "The Authoritarian as Measured by a Personality Scale: Solid Citizen or Misfit?," by J.J. Ray. The comment is directed to two statements in the article. One statement questions the adequacy of personality scales presented in a forced-choice format. The other purportedly nails the coffin shut on the classical concept a of authoritarianism. There are adequate data to support the adequacy of forced-choice formats in dealing with social desirability. There is also an alternative theoretical/empirical rationale that at least temporarily prevents the passing away of authoritarianism from the personality arena. KW - AUTHORITARIANISM KW - PERSONALITY KW - CLINICAL psychology KW - MOTIVATION (Psychology) KW - SOCIAL desirability KW - RAY, J. J. N1 - Accession Number: 15847544; Bloom, Richard W. 1; Affiliation: 1: United States Air Force Hospital, Cannon AFB, N. M.; Source Info: Oct1980, Vol. 36 Issue 4, p918; Subject Term: AUTHORITARIANISM; Subject Term: PERSONALITY; Subject Term: CLINICAL psychology; Subject Term: MOTIVATION (Psychology); Subject Term: SOCIAL desirability; People: RAY, J. J.; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=15847544&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Gorman, Charles D. AU - Clover, William H. AU - Doherty, Michael E. T1 - Can We Learn Anything About Interviewing Real People From "Interviews" of Paper People? Two Studies of the External Validity of a Paradigm. JO - Organizational Behavior & Human Performance JF - Organizational Behavior & Human Performance Y1 - 1978/10// VL - 22 IS - 2 M3 - Article SP - 165 EP - 192 SN - 00305073 AB - Two investigations of the external validity of the paper-people analog are presented. One, a laboratory study, had advanced graduate students in industrial psychology make predictions about undergraduates based on test data plus an interview and also make predictions based on the test data (i.e., paper people) alone. Complete criterion data allowed traditional validity analyses to be carried out. The second study had highly experienced interviewers rate the paper credentials of people whom they had interviewed in the past. Judgments based on interviewees were compared with judgments made on paper people in the two studies. Sufficient data are presented to allow readers to draw their own conclusions concerning the representativeness of the paper-people paradigm. Our own conclusion is that the answer to the question raised in the title is ‘No.’ [ABSTRACT FROM AUTHOR] AB - Copyright of Organizational Behavior & Human Performance is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EMPLOYMENT interviewing KW - TRUTHFULNESS & falsehood KW - INDUSTRIAL psychology KW - PERSONNEL management KW - GRADUATE students KW - PARADIGM (Theory of knowledge) KW - INTERVIEWING KW - MULTIVARIATE analysis KW - SURVEYS N1 - Accession Number: 6336677; Gorman, Charles D. 1 Clover, William H. 2 Doherty, Michael E. 3; Affiliation: 1: USAF Occupational Measurement Center 2: US Air Force Academy 3: Bowling Green State University; Source Info: Oct78, Vol. 22 Issue 2, p165; Subject Term: EMPLOYMENT interviewing; Subject Term: TRUTHFULNESS & falsehood; Subject Term: INDUSTRIAL psychology; Subject Term: PERSONNEL management; Subject Term: GRADUATE students; Subject Term: PARADIGM (Theory of knowledge); Subject Term: INTERVIEWING; Subject Term: MULTIVARIATE analysis; Subject Term: SURVEYS; NAICS/Industry Codes: 923130 Administration of Human Resource Programs (except Education, Public Health, and Veterans' Affairs Programs); NAICS/Industry Codes: 541612 Human Resources Consulting Services; Number of Pages: 28p; Illustrations: 1 Diagram, 8 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=6336677&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - O'Connell, Michael J. AU - Cummings, L. L. T1 - The Moderating Effects of Environment and Structure on the Satisfaction--Tension--Influence Network. JO - Organizational Behavior & Human Performance JF - Organizational Behavior & Human Performance Y1 - 1976/12// VL - 17 IS - 2 M3 - Article SP - 351 EP - 366 SN - 00305073 AB - Relations among a dependent variable network consisting of satisfaction-tension-influence and the moderating effects of informational and structural characteristics are reported. One hundred forty-four subjects participated in a 3 × 3 × 2 factorial design. Dependent variables were perceptions of satisfaction, tension, and influence. Moderator variables were information load, information specificity, and group structure. The results confirmed the general field-study findings of a negative relation between tension and satisfaction and a positive relation between influence and satisfaction. The tension-satisfaction relation was most strongly moderated by information; less so by structure. The influence-satisfaction and influence-tension relations were only weakly moderated. Possible interpretations are offered in terms of (a) the degree to which dependent variables in organizational behavior are objectively and environmentally anchored and (b) the possibility of methodological artifacts (combining self and other perceptions) influencing the "moderatorability" of dependent variables in organizational behavior. It is concluded that (a) informational and organizational characteristics can influence the dependent variable network and (b) the relations among dependent variables cannot be accurately described with simple statements implying unidimensional measures whose relations are stable across conditions. [ABSTRACT FROM AUTHOR] AB - Copyright of Organizational Behavior & Human Performance is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - JOB satisfaction KW - JOB stress KW - FACTORIAL experiment designs KW - WORK environment KW - MOTIVATION (Psychology) KW - ORGANIZATIONAL behavior N1 - Accession Number: 7666388; O'Connell, Michael J. 1 Cummings, L. L. 2; Affiliation: 1: United States Air Force Academy. 2: University of Wisconsin‐Madison; Source Info: Dec76, Vol. 17 Issue 2, p351; Subject Term: JOB satisfaction; Subject Term: JOB stress; Subject Term: FACTORIAL experiment designs; Subject Term: WORK environment; Subject Term: MOTIVATION (Psychology); Subject Term: ORGANIZATIONAL behavior; Number of Pages: 16p; Illustrations: 1 Diagram, 5 Charts; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7666388&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Patton, Orin C. T1 - TERRITORIAL BASES OF REVOLUTION. JO - Annals of the Association of American Geographers JF - Annals of the Association of American Geographers Y1 - 1970/09// VL - 60 IS - 3 M3 - Article SP - 598 EP - 600 PB - Taylor & Francis Ltd SN - 00045608 AB - In the book "The Insurgent State: Territorial Bases of Revolution," by Robert W. McColl has served the very useful purpose of focusing attention on the territorial and spatial aspects of insurgent revolutions. Much of the literature in the field of revolution is concerned with political or socio economic factors, or has such a heavy ideological and polemical content that the essential spatial elements are often overlooked. The growing body of research on revolutionary behavior and the use of violence for political and social purposes tends to be concentrated, not unexpectedly, at the higher levels of spatial aggregation. Nations are treated as points in space, and environments are apparently assumed to be homogeneous over large areas approach. KW - LITERATURE KW - GEOGRAPHY KW - EARTH sciences KW - PRACTICAL politics KW - INFORMATION services KW - INSURGENT State: Territorial Bases of Revolution, The (Book) N1 - Accession Number: 12949717; Patton, Orin C. 1; Affiliation: 1: Associate Professor of Geography, United States Air Force Academy, Colorado; Source Info: Sep70, Vol. 60 Issue 3, p598; Subject Term: LITERATURE; Subject Term: GEOGRAPHY; Subject Term: EARTH sciences; Subject Term: PRACTICAL politics; Subject Term: INFORMATION services; Reviews & Products: INSURGENT State: Territorial Bases of Revolution, The (Book); NAICS/Industry Codes: 519190 All Other Information Services; Number of Pages: 3p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=12949717&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Naylor, James C. AU - Clark, Roger D. T1 - Intuitive Inference Strategies in Interval Learning Tasks as a Function of Validity Magnitude and Sign. JO - Organizational Behavior & Human Performance JF - Organizational Behavior & Human Performance Y1 - 1968/11// VL - 3 IS - 4 M3 - Article SP - 378 EP - 399 SN - 00305073 AB - Nine groups of ten subjects each performed for 200 trials on interval learning tasks in which the stimulus, response and reinforcement continua were continuous scaled variables. The nine experimental conditions were defined by the size and sign of the product-moment correlation between the stimulus and reinforcement (criterion) distributions. That is, re ranged from - .80 to +.80 in steps of .20. There was little or no evidence for matching behavior with correlational performance measures. Subjects leaning positive re relationships tended to overmatch (rs > re, with the tendency to do so increasing as the size of re decreased. Subjects who learned negative re values consistently undermatched (rs < re, apparently due to a general set to regard "relatedness" as a positive phenomenon. Analysis of subjects' conditional response arrays showed that subjects' conditional response distributions had greater dispersion than the corresponding conditional reinforcement distributions. The size of this effect increased as a function of the absolute magnitude of re and was most evident with high and low stimulus arrays. A tendency for subjects to displace the array means followed a similar pattern. [ABSTRACT FROM AUTHOR] AB - Copyright of Organizational Behavior & Human Performance is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - INFERENCE (Logic) KW - TASK analysis KW - LEARNING KW - STATISTICS KW - MATHEMATICS KW - PERFORMANCE standards N1 - Accession Number: 8824808; Naylor, James C. 1 Clark, Roger D. 2; Affiliation: 1: Purdue University 2: United States Air Force.; Source Info: Nov68, Vol. 3 Issue 4, p378; Subject Term: INFERENCE (Logic); Subject Term: TASK analysis; Subject Term: LEARNING; Subject Term: STATISTICS; Subject Term: MATHEMATICS; Subject Term: PERFORMANCE standards; Number of Pages: 22p; Illustrations: 7 Diagrams, 1 Chart, 11 Graphs; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8824808&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Roessler, Robert AU - Greenfield, N. S. AU - Alexander, A. A. T1 - EGO STRENGTH AND RESPONSE STEREOTYPY. JO - Psychophysiology JF - Psychophysiology Y1 - 1964/10// VL - 1 IS - 2 M3 - Article SP - 142 EP - 150 SN - 00485772 AB - The incidence of specificity and stereotypy was examined among 36 Ss' responses to six intensities of a 1000-cps tone. It was found that stereotypy occurred in 26 of the 36 Ss and was significantly less frequent among subjects in an intermediate range of ego strength. When a significant hierarchical patterning of ranks was found (stereotypy), there was marked individual variation in the order of ranks among physiological variables and the order was not related to ego strength. Specificity of response was less frequent, occurring in 16 of the 36 Ss. There was significantly more specificity in a high ego strength group as compared to middle and low Es groups. Specificity occurred most frequently on heart rate but not significantly more frequently. [ABSTRACT FROM AUTHOR] AB - Copyright of Psychophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - EGO strength KW - STEREOTYPY (Psychiatry) KW - HEART beat KW - HIERARCHIES KW - IMMUNOSPECIFICITY KW - PATHOLOGICAL psychology KW - Ego strength KW - Finger volume KW - Heart rate KW - Hierarchy KW - Muscle potential KW - Skin resistance KW - Specificity KW - Stereotypy. N1 - Accession Number: 11044148; Roessler, Robert 1 Greenfield, N. S. 1 Alexander, A. A. 1,2; Affiliation: 1: Psychophysiology Laboratory, Wisconsin Psychiatric Institute and Department of Psychiatry, University of Wisconsin Medical Center, Madison, Wisconsin. 2: United States Air Force Personnel Research Laboratory, Lackland Air Force Base, Texas.; Source Info: Oct+H65391964, Vol. 1 Issue 2, p142; Subject Term: EGO strength; Subject Term: STEREOTYPY (Psychiatry); Subject Term: HEART beat; Subject Term: HIERARCHIES; Subject Term: IMMUNOSPECIFICITY; Subject Term: PATHOLOGICAL psychology; Author-Supplied Keyword: Ego strength; Author-Supplied Keyword: Finger volume; Author-Supplied Keyword: Heart rate; Author-Supplied Keyword: Hierarchy; Author-Supplied Keyword: Muscle potential; Author-Supplied Keyword: Skin resistance; Author-Supplied Keyword: Specificity; Author-Supplied Keyword: Stereotypy.; Number of Pages: 9p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=11044148&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER -